From a0c31fdfb7f158780faa43ab83cc08b414bebd7e Mon Sep 17 00:00:00 2001 From: Tilman Schmidt Date: Wed, 8 Apr 2009 16:01:16 -0700 Subject: ISDN: update Documentation/isdn/00-INDEX After the merging of mISDN, state which files refer only to the old isdn4linux subsystem. Also add a few missing files and sort alphabetically. Signed-off-by: Tilman Schmidt Signed-off-by: David S. Miller --- Documentation/isdn/00-INDEX | 45 ++++++++++++++++++++++++++------------------- 1 file changed, 26 insertions(+), 19 deletions(-) (limited to 'Documentation') diff --git a/Documentation/isdn/00-INDEX b/Documentation/isdn/00-INDEX index 9fee5f2e5c62..33543ac7d81f 100644 --- a/Documentation/isdn/00-INDEX +++ b/Documentation/isdn/00-INDEX @@ -2,28 +2,20 @@ - this file (info on ISDN implementation for Linux) CREDITS - list of the kind folks that brought you this stuff. +HiSax.cert + - information about the ITU approval certification of the HiSax driver. INTERFACE - - description of Linklevel and Hardwarelevel ISDN interface. + - description of isdn4linux Link Level and Hardware Level interfaces. +INTERFACE.fax + - description of the fax subinterface of isdn4linux. README - general info on what you need and what to do for Linux ISDN. README.FAQ - general info for FAQ. -README.audio - - info for running audio over ISDN. -README.fax - - info for using Fax over ISDN. -README.icn - - info on the ICN-ISDN-card and its driver. README.HiSax - info on the HiSax driver which replaces the old teles. -README.hfc-pci - - info on hfc-pci based cards. -README.pcbit - - info on the PCBIT-D ISDN adapter and driver. -README.syncppp - - info on running Sync PPP over ISDN. -syncPPP.FAQ - - frequently asked questions about running PPP over ISDN. +README.audio + - info for running audio over ISDN. README.avmb1 - info on driver for AVM-B1 ISDN card. README.act2000 @@ -34,10 +26,25 @@ README.concap - info on "CONCAP" encapsulation protocol interface used for X.25. README.diversion - info on module for isdn diversion services. +README.fax + - info for using Fax over ISDN. +README.gigaset + - info on the drivers for Siemens Gigaset ISDN adapters +README.hfc-pci + - info on hfc-pci based cards. +README.hysdn + - info on driver for Hypercope active HYSDN cards +README.icn + - info on the ICN-ISDN-card and its driver. +README.mISDN + - info on the Modular ISDN subsystem (mISDN) +README.pcbit + - info on the PCBIT-D ISDN adapter and driver. README.sc - info on driver for Spellcaster cards. +README.syncppp + - info on running Sync PPP over ISDN. README.x25 - _ info for running X.25 over ISDN. -README.hysdn - - info on driver for Hypercope active HYSDN cards - + - info on running X.25 over ISDN. +syncPPP.FAQ + - frequently asked questions about running PPP over ISDN. -- cgit v1.2.3 From 621cac85297de5ba655e3430b007dd2e0da91da6 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 27 Mar 2009 14:14:31 +0100 Subject: rfkill: remove user_claim stuff Almost all drivers do not support user_claim, so remove it completely and always report -EOPNOTSUPP to userspace. Since userspace cannot really drive rfkill _anyway_ (due to the odd restrictions imposed by the documentation) having this code is just pointless. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- Documentation/rfkill.txt | 16 +++++------ drivers/net/wireless/ath9k/main.c | 1 - drivers/net/wireless/b43/rfkill.c | 1 - drivers/net/wireless/b43legacy/rfkill.c | 1 - drivers/net/wireless/iwlwifi/iwl-rfkill.c | 1 - drivers/platform/x86/acer-wmi.c | 1 - drivers/platform/x86/hp-wmi.c | 3 --- drivers/platform/x86/sony-laptop.c | 4 --- drivers/platform/x86/toshiba_acpi.c | 1 - include/linux/rfkill.h | 6 ----- net/rfkill/rfkill.c | 45 +++---------------------------- net/wimax/op-rfkill.c | 1 - 12 files changed, 9 insertions(+), 72 deletions(-) (limited to 'Documentation') diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt index 4d3ee317a4a3..40c3a3f10816 100644 --- a/Documentation/rfkill.txt +++ b/Documentation/rfkill.txt @@ -521,16 +521,12 @@ status of the system. Input devices may issue events that are related to rfkill. These are the various KEY_* events and SW_* events supported by rfkill-input.c. -******IMPORTANT****** -When rfkill-input is ACTIVE, userspace is NOT TO CHANGE THE STATE OF AN RFKILL -SWITCH IN RESPONSE TO AN INPUT EVENT also handled by rfkill-input, unless it -has set to true the user_claim attribute for that particular switch. This rule -is *absolute*; do NOT violate it. -******IMPORTANT****** - -Userspace must not assume it is the only source of control for rfkill switches. -Their state CAN and WILL change due to firmware actions, direct user actions, -and the rfkill-input EPO override for *_RFKILL_ALL. +Userspace may not change the state of an rfkill switch in response to an +input event, it should refrain from changing states entirely. + +Userspace cannot assume it is the only source of control for rfkill switches. +Their state can change due to firmware actions, direct user actions, and the +rfkill-input EPO override for *_RFKILL_ALL. When rfkill-input is not active, userspace must initiate a rfkill status change by writing to the "state" attribute in order for anything to happen. diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 13d4e6756c99..0607df20e497 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -1267,7 +1267,6 @@ static int ath_init_sw_rfkill(struct ath_softc *sc) sc->rf_kill.rfkill->data = sc; sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio; sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED; - sc->rf_kill.rfkill->user_claim_unsupported = 1; return 0; } diff --git a/drivers/net/wireless/b43/rfkill.c b/drivers/net/wireless/b43/rfkill.c index afad42358693..9e1d00bc24d3 100644 --- a/drivers/net/wireless/b43/rfkill.c +++ b/drivers/net/wireless/b43/rfkill.c @@ -139,7 +139,6 @@ void b43_rfkill_init(struct b43_wldev *dev) rfk->rfkill->state = RFKILL_STATE_UNBLOCKED; rfk->rfkill->data = dev; rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle; - rfk->rfkill->user_claim_unsupported = 1; rfk->poll_dev = input_allocate_polled_device(); if (!rfk->poll_dev) { diff --git a/drivers/net/wireless/b43legacy/rfkill.c b/drivers/net/wireless/b43legacy/rfkill.c index b32bf6a94f19..4b0c7d27a51f 100644 --- a/drivers/net/wireless/b43legacy/rfkill.c +++ b/drivers/net/wireless/b43legacy/rfkill.c @@ -142,7 +142,6 @@ void b43legacy_rfkill_init(struct b43legacy_wldev *dev) rfk->rfkill->state = RFKILL_STATE_UNBLOCKED; rfk->rfkill->data = dev; rfk->rfkill->toggle_radio = b43legacy_rfkill_soft_toggle; - rfk->rfkill->user_claim_unsupported = 1; rfk->poll_dev = input_allocate_polled_device(); if (!rfk->poll_dev) { diff --git a/drivers/net/wireless/iwlwifi/iwl-rfkill.c b/drivers/net/wireless/iwlwifi/iwl-rfkill.c index 2ad9faf1508a..65605ad44e4b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rfkill.c +++ b/drivers/net/wireless/iwlwifi/iwl-rfkill.c @@ -91,7 +91,6 @@ int iwl_rfkill_init(struct iwl_priv *priv) priv->rfkill->data = priv; priv->rfkill->state = RFKILL_STATE_UNBLOCKED; priv->rfkill->toggle_radio = iwl_rfkill_soft_rf_kill; - priv->rfkill->user_claim_unsupported = 1; priv->rfkill->dev.class->suspend = NULL; priv->rfkill->dev.class->resume = NULL; diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index 0f6e43bf4fc2..62d02b3c998e 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -1005,7 +1005,6 @@ enum rfkill_type type, char *name, u32 cap) *data = cap; rfkill_dev->data = data; rfkill_dev->toggle_radio = acer_rfkill_set; - rfkill_dev->user_claim_unsupported = 1; err = rfkill_register(rfkill_dev); if (err) { diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c index 50d9019de2be..fe171fad12cf 100644 --- a/drivers/platform/x86/hp-wmi.c +++ b/drivers/platform/x86/hp-wmi.c @@ -434,7 +434,6 @@ static int __init hp_wmi_bios_setup(struct platform_device *device) wifi_rfkill->name = "hp-wifi"; wifi_rfkill->state = hp_wmi_wifi_state(); wifi_rfkill->toggle_radio = hp_wmi_wifi_set; - wifi_rfkill->user_claim_unsupported = 1; err = rfkill_register(wifi_rfkill); if (err) goto add_sysfs_error; @@ -446,7 +445,6 @@ static int __init hp_wmi_bios_setup(struct platform_device *device) bluetooth_rfkill->name = "hp-bluetooth"; bluetooth_rfkill->state = hp_wmi_bluetooth_state(); bluetooth_rfkill->toggle_radio = hp_wmi_bluetooth_set; - bluetooth_rfkill->user_claim_unsupported = 1; err = rfkill_register(bluetooth_rfkill); if (err) goto register_bluetooth_error; @@ -457,7 +455,6 @@ static int __init hp_wmi_bios_setup(struct platform_device *device) wwan_rfkill->name = "hp-wwan"; wwan_rfkill->state = hp_wmi_wwan_state(); wwan_rfkill->toggle_radio = hp_wmi_wwan_set; - wwan_rfkill->user_claim_unsupported = 1; err = rfkill_register(wwan_rfkill); if (err) goto register_wwan_err; diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index d3c92d777bde..184e99e72684 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -1097,7 +1097,6 @@ static int sony_nc_setup_wifi_rfkill(struct acpi_device *device) sony_wifi_rfkill->name = "sony-wifi"; sony_wifi_rfkill->toggle_radio = sony_nc_rfkill_set; sony_wifi_rfkill->get_state = sony_nc_rfkill_get; - sony_wifi_rfkill->user_claim_unsupported = 1; sony_wifi_rfkill->data = (void *)SONY_WIFI; err = rfkill_register(sony_wifi_rfkill); if (err) @@ -1119,7 +1118,6 @@ static int sony_nc_setup_bluetooth_rfkill(struct acpi_device *device) sony_bluetooth_rfkill->name = "sony-bluetooth"; sony_bluetooth_rfkill->toggle_radio = sony_nc_rfkill_set; sony_bluetooth_rfkill->get_state = sony_nc_rfkill_get; - sony_bluetooth_rfkill->user_claim_unsupported = 1; sony_bluetooth_rfkill->data = (void *)SONY_BLUETOOTH; err = rfkill_register(sony_bluetooth_rfkill); if (err) @@ -1140,7 +1138,6 @@ static int sony_nc_setup_wwan_rfkill(struct acpi_device *device) sony_wwan_rfkill->name = "sony-wwan"; sony_wwan_rfkill->toggle_radio = sony_nc_rfkill_set; sony_wwan_rfkill->get_state = sony_nc_rfkill_get; - sony_wwan_rfkill->user_claim_unsupported = 1; sony_wwan_rfkill->data = (void *)SONY_WWAN; err = rfkill_register(sony_wwan_rfkill); if (err) @@ -1161,7 +1158,6 @@ static int sony_nc_setup_wimax_rfkill(struct acpi_device *device) sony_wimax_rfkill->name = "sony-wimax"; sony_wimax_rfkill->toggle_radio = sony_nc_rfkill_set; sony_wimax_rfkill->get_state = sony_nc_rfkill_get; - sony_wimax_rfkill->user_claim_unsupported = 1; sony_wimax_rfkill->data = (void *)SONY_WIMAX; err = rfkill_register(sony_wimax_rfkill); if (err) diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 9f187265db8e..4345089f5171 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -803,7 +803,6 @@ static int __init toshiba_acpi_init(void) toshiba_acpi.rfk_dev->name = toshiba_acpi.bt_name; toshiba_acpi.rfk_dev->toggle_radio = bt_rfkill_toggle_radio; - toshiba_acpi.rfk_dev->user_claim_unsupported = 1; toshiba_acpi.rfk_dev->data = &toshiba_acpi; if (hci_get_bt_on(&bt_on) == HCI_SUCCESS && bt_on) { diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h index e1ec7d9aa49c..de18ef227e00 100644 --- a/include/linux/rfkill.h +++ b/include/linux/rfkill.h @@ -58,9 +58,6 @@ enum rfkill_state { * @type: Radio type which the button controls, the value stored * here should be a value from enum rfkill_type. * @state: State of the switch, "UNBLOCKED" means radio can operate. - * @user_claim_unsupported: Whether the hardware supports exclusive - * RF-kill control by userspace. Set this before registering. - * @user_claim: Set when the switch is controlled exlusively by userspace. * @mutex: Guards switch state transitions. It serializes callbacks * and also protects the state. * @data: Pointer to the RF button drivers private data which will be @@ -83,9 +80,6 @@ struct rfkill { const char *name; enum rfkill_type type; - bool user_claim_unsupported; - bool user_claim; - /* the mutex serializes callbacks and also protects * the state */ struct mutex mutex; diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c index 3eaa39403c13..df1269c5ca70 100644 --- a/net/rfkill/rfkill.c +++ b/net/rfkill/rfkill.c @@ -200,7 +200,7 @@ static void __rfkill_switch_all(const enum rfkill_type type, rfkill_global_states[type].current_state = state; list_for_each_entry(rfkill, &rfkill_list, node) { - if ((!rfkill->user_claim) && (rfkill->type == type)) { + if (rfkill->type == type) { mutex_lock(&rfkill->mutex); rfkill_toggle_radio(rfkill, state, 0); mutex_unlock(&rfkill->mutex); @@ -447,53 +447,14 @@ static ssize_t rfkill_claim_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct rfkill *rfkill = to_rfkill(dev); - - return sprintf(buf, "%d\n", rfkill->user_claim); + return sprintf(buf, "%d\n", 0); } static ssize_t rfkill_claim_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct rfkill *rfkill = to_rfkill(dev); - unsigned long claim_tmp; - bool claim; - int error; - - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - - if (rfkill->user_claim_unsupported) - return -EOPNOTSUPP; - - error = strict_strtoul(buf, 0, &claim_tmp); - if (error) - return error; - claim = !!claim_tmp; - - /* - * Take the global lock to make sure the kernel is not in - * the middle of rfkill_switch_all - */ - error = mutex_lock_killable(&rfkill_global_mutex); - if (error) - return error; - - if (rfkill->user_claim != claim) { - if (!claim && !rfkill_epo_lock_active) { - mutex_lock(&rfkill->mutex); - rfkill_toggle_radio(rfkill, - rfkill_global_states[rfkill->type].current_state, - 0); - mutex_unlock(&rfkill->mutex); - } - rfkill->user_claim = claim; - } - - mutex_unlock(&rfkill_global_mutex); - - return error ? error : count; + return -EOPNOTSUPP; } static struct device_attribute rfkill_dev_attrs[] = { diff --git a/net/wimax/op-rfkill.c b/net/wimax/op-rfkill.c index 870032faece2..a3616e2ccb8a 100644 --- a/net/wimax/op-rfkill.c +++ b/net/wimax/op-rfkill.c @@ -364,7 +364,6 @@ int wimax_rfkill_add(struct wimax_dev *wimax_dev) rfkill->state = RFKILL_STATE_UNBLOCKED; rfkill->data = wimax_dev; rfkill->toggle_radio = wimax_rfkill_toggle_radio; - rfkill->user_claim_unsupported = 1; /* Initialize the input device for the hw key */ input_dev = input_allocate_device(); -- cgit v1.2.3 From de2b3e864aa908e613dd9912def88af7877d85f3 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 8 Apr 2009 12:54:41 +0200 Subject: mac80211: update injection documentation We don't currently support antenna or rate setting, so remove that. Also update the link -- the current one is dead and the wiki can be kept updated easier. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- Documentation/networking/mac80211-injection.txt | 28 ++++++------------------- 1 file changed, 6 insertions(+), 22 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/mac80211-injection.txt b/Documentation/networking/mac80211-injection.txt index 84906ef3ed6e..b30e81ad5307 100644 --- a/Documentation/networking/mac80211-injection.txt +++ b/Documentation/networking/mac80211-injection.txt @@ -12,38 +12,22 @@ following format: The radiotap format is discussed in ./Documentation/networking/radiotap-headers.txt. -Despite 13 radiotap argument types are currently defined, most only make sense +Despite many radiotap parameters being currently defined, most only make sense to appear on received packets. The following information is parsed from the radiotap headers and used to control injection: - * IEEE80211_RADIOTAP_RATE - - rate in 500kbps units, automatic if invalid or not present - - - * IEEE80211_RADIOTAP_ANTENNA - - antenna to use, automatic if not present - - - * IEEE80211_RADIOTAP_DBM_TX_POWER - - transmit power in dBm, automatic if not present - - * IEEE80211_RADIOTAP_FLAGS IEEE80211_RADIOTAP_F_FCS: FCS will be removed and recalculated IEEE80211_RADIOTAP_F_WEP: frame will be encrypted if key available IEEE80211_RADIOTAP_F_FRAG: frame will be fragmented if longer than the - current fragmentation threshold. Note that - this flag is only reliable when software - fragmentation is enabled) + current fragmentation threshold. + The injection code can also skip all other currently defined radiotap fields facilitating replay of captured radiotap headers directly. -Here is an example valid radiotap header defining these three parameters +Here is an example valid radiotap header defining some parameters 0x00, 0x00, // <-- radiotap version 0x0b, 0x00, // <- radiotap header length @@ -72,8 +56,8 @@ interface), along the following lines: ... r = pcap_inject(ppcap, u8aSendBuffer, nLength); -You can also find sources for a complete inject test applet here: +You can also find a link to a complete inject application here: -http://penumbra.warmcat.com/_twk/tiki-index.php?page=packetspammer +http://wireless.kernel.org/en/users/Documentation/packetspammer Andy Green -- cgit v1.2.3 From 255cac91c3c9ce7dca7713b93ab03c75b7902e0e Mon Sep 17 00:00:00 2001 From: Ilpo Järvinen Date: Mon, 4 May 2009 11:07:36 -0700 Subject: tcp: extend ECN sysctl to allow server-side only ECN MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This should be very safe compared with full enabled, so I see no reason why it shouldn't be done right away. As ECN can only be negotiated if the SYN sending party is also supporting it, somebody in the loop probably knows what he/she is doing. If SYN does not ask for ECN, the server side SYN-ACK is identical to what it is without ECN. Thus it's quite safe. The chosen value is safe w.r.t to existing configs which choose to currently set manually either 0 or 1 but silently upgrades those who have not explicitly requested ECN off. Whether to just enable both sides comes up time to time but unless that gets done now we can at least make the servers aware of ECN already. As there are some known problems to occur if ECN is enabled, it's currently questionable whether there's any real gain from enabling clients as servers mostly won't support it anyway (so we'd hit just the negative sides). After enabling the servers and getting that deployed, the client end enable really has some potential gain too. Signed-off-by: Ilpo Järvinen Signed-off-by: David S. Miller --- Documentation/networking/ip-sysctl.txt | 11 ++++++++++- net/ipv4/tcp_input.c | 2 +- net/ipv4/tcp_output.c | 2 +- 3 files changed, 12 insertions(+), 3 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index ec5de02f543f..7f98aa3962c6 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -168,7 +168,16 @@ tcp_dsack - BOOLEAN Allows TCP to send "duplicate" SACKs. tcp_ecn - BOOLEAN - Enable Explicit Congestion Notification in TCP. + Enable Explicit Congestion Notification (ECN) in TCP. ECN is only + used when both ends of the TCP flow support it. It is useful to + avoid losses due to congestion (when the bottleneck router supports + ECN). + Possible values are: + 0 disable ECN + 1 ECN enabled + 2 Only server-side ECN enabled. If the other end does + not support ECN, behavior is like with ECN disabled. + Default: 2 tcp_fack - BOOLEAN Enable FACK congestion avoidance and fast retransmission. diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index c96a6bb25430..56dcf97a97fb 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -77,7 +77,7 @@ int sysctl_tcp_window_scaling __read_mostly = 1; int sysctl_tcp_sack __read_mostly = 1; int sysctl_tcp_fack __read_mostly = 1; int sysctl_tcp_reordering __read_mostly = TCP_FASTRETRANS_THRESH; -int sysctl_tcp_ecn __read_mostly; +int sysctl_tcp_ecn __read_mostly = 2; int sysctl_tcp_dsack __read_mostly = 1; int sysctl_tcp_app_win __read_mostly = 31; int sysctl_tcp_adv_win_scale __read_mostly = 2; diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 59aec609cec6..79c39dc9b01c 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -288,7 +288,7 @@ static inline void TCP_ECN_send_syn(struct sock *sk, struct sk_buff *skb) struct tcp_sock *tp = tcp_sk(sk); tp->ecn_flags = 0; - if (sysctl_tcp_ecn) { + if (sysctl_tcp_ecn == 1) { TCP_SKB_CB(skb)->flags |= TCPCB_FLAG_ECE | TCPCB_FLAG_CWR; tp->ecn_flags = TCP_ECN_OK; } -- cgit v1.2.3 From b3fcb13f1c866ae0330c445c3cb481014c36a02f Mon Sep 17 00:00:00 2001 From: Tilman Schmidt Date: Wed, 13 May 2009 12:44:17 +0000 Subject: gigaset: documentation update Mention handling of unregisteted DECT wireless datasets in README.gigaset. Signed-off-by: Tilman Schmidt Signed-off-by: David S. Miller --- Documentation/isdn/README.gigaset | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/isdn/README.gigaset b/Documentation/isdn/README.gigaset index 02c0e9341dd8..f6e9eaa75967 100644 --- a/Documentation/isdn/README.gigaset +++ b/Documentation/isdn/README.gigaset @@ -192,7 +192,6 @@ GigaSet 307x Device Driver 2.6. M105 Undocumented USB Requests ------------------------------ - The Gigaset M105 USB data box understands a couple of useful, but undocumented USB commands. These requests are not used in normal operation (for wireless access to the base), but are needed for access @@ -204,6 +203,20 @@ GigaSet 307x Device Driver M105, try setting that option to "y" via 'make {x,menu}config' and recompiling the driver. +2.7. Unregistered Wireless Devices (M101/M105) + ----------------------------------------- + The main purpose of the ser_gigaset and usb_gigaset drivers is to allow + the M101 and M105 wireless devices to be used as ISDN devices for ISDN + connections through a Gigaset base. Therefore they assume that the device + is registered to a DECT base. + + If the M101/M105 device is not registered to a base, initialization of + the device fails, and a corresponding error message is logged by the + driver. In that situation, a restricted set of functions is available + which includes, in particular, those necessary for registering the device + to a base or for switching it between Fixed Part and Portable Part + modes. For the M105, these commands require the "Support for undocumented + USB requests" configuration option (see section 2.6.) to be enabled. 3. Troubleshooting --------------- @@ -240,6 +253,14 @@ GigaSet 307x Device Driver Recompile the usb_gigaset driver with the kernel configuration option CONFIG_GIGASET_UNDOCREQ set to 'y'. (see section 2.6.) + Problem: + Messages like this: + usb_gigaset 3-2:1.0: Could not initialize the device. + appear in your syslog. + Solution: + Check whether your M10x wireless device is correctly registered to the + Gigaset base. (see section 2.7.) + 3.2. Telling the driver to provide more information ---------------------------------------------- Building the driver with the "Gigaset debugging" kernel configuration -- cgit v1.2.3 From b88bd95655c7bc059606529e01467594978d7b72 Mon Sep 17 00:00:00 2001 From: Tilman Schmidt Date: Wed, 13 May 2009 12:44:18 +0000 Subject: gigaset: remove UNDOCREQ config option Drop the kernel config option GIGASET_UNDOCREQ, permanently activating the code it controlled, as there have been no reports of problems caused by its activation but many problems caused by it being disabled. Also fix a few bad comments while we're at it. Impact: cleanup Signed-off-by: Tilman Schmidt Signed-off-by: David S. Miller --- Documentation/isdn/README.gigaset | 33 +++----------------- drivers/isdn/gigaset/Kconfig | 7 ----- drivers/isdn/gigaset/usb-gigaset.c | 62 ++++++++++++++------------------------ 3 files changed, 28 insertions(+), 74 deletions(-) (limited to 'Documentation') diff --git a/Documentation/isdn/README.gigaset b/Documentation/isdn/README.gigaset index f6e9eaa75967..f9963103ae3d 100644 --- a/Documentation/isdn/README.gigaset +++ b/Documentation/isdn/README.gigaset @@ -149,10 +149,8 @@ GigaSet 307x Device Driver configuration files and chat scripts in the gigaset-VERSION/ppp directory in the driver packages from http://sourceforge.net/projects/gigaset307x/. Please note that the USB drivers are not able to change the state of the - control lines (the M105 driver can be configured to use some undocumented - control requests, if you really need the control lines, though). This means - you must use "Stupid Mode" if you are using wvdial or you should use the - nocrtscts option of pppd. + control lines. This means you must use "Stupid Mode" if you are using + wvdial or you should use the nocrtscts option of pppd. You must also assure that the ppp_async module is loaded with the parameter flag_time=0. You can do this e.g. by adding a line like @@ -190,20 +188,7 @@ GigaSet 307x Device Driver You can also use /sys/class/tty/ttyGxy/cidmode for changing the CID mode setting (ttyGxy is ttyGU0 or ttyGB0). -2.6. M105 Undocumented USB Requests - ------------------------------ - The Gigaset M105 USB data box understands a couple of useful, but - undocumented USB commands. These requests are not used in normal - operation (for wireless access to the base), but are needed for access - to the M105's own configuration mode (registration to the base, baudrate - and line format settings, device status queries) via the gigacontr - utility. Their use is controlled by the kernel configuration option - "Support for undocumented USB requests" (CONFIG_GIGASET_UNDOCREQ). If you - encounter error code -ENOTTY when trying to use some features of the - M105, try setting that option to "y" via 'make {x,menu}config' and - recompiling the driver. - -2.7. Unregistered Wireless Devices (M101/M105) +2.6. Unregistered Wireless Devices (M101/M105) ----------------------------------------- The main purpose of the ser_gigaset and usb_gigaset drivers is to allow the M101 and M105 wireless devices to be used as ISDN devices for ISDN @@ -215,8 +200,7 @@ GigaSet 307x Device Driver driver. In that situation, a restricted set of functions is available which includes, in particular, those necessary for registering the device to a base or for switching it between Fixed Part and Portable Part - modes. For the M105, these commands require the "Support for undocumented - USB requests" configuration option (see section 2.6.) to be enabled. + modes. 3. Troubleshooting --------------- @@ -246,20 +230,13 @@ GigaSet 307x Device Driver Solution: Select Unimodem mode for all DECT data adapters. (see section 2.4.) - Problem: - You want to configure your USB DECT data adapter (M105) but gigacontr - reports an error: "/dev/ttyGU0: Inappropriate ioctl for device". - Solution: - Recompile the usb_gigaset driver with the kernel configuration option - CONFIG_GIGASET_UNDOCREQ set to 'y'. (see section 2.6.) - Problem: Messages like this: usb_gigaset 3-2:1.0: Could not initialize the device. appear in your syslog. Solution: Check whether your M10x wireless device is correctly registered to the - Gigaset base. (see section 2.7.) + Gigaset base. (see section 2.6.) 3.2. Telling the driver to provide more information ---------------------------------------------- diff --git a/drivers/isdn/gigaset/Kconfig b/drivers/isdn/gigaset/Kconfig index 754b90d412e4..18ab8652aa57 100644 --- a/drivers/isdn/gigaset/Kconfig +++ b/drivers/isdn/gigaset/Kconfig @@ -43,11 +43,4 @@ config GIGASET_DEBUG This enables debugging code in the Gigaset drivers. If in doubt, say yes. -config GIGASET_UNDOCREQ - bool "Support for undocumented USB requests" - help - This enables support for USB requests we only know from - reverse engineering (currently M105 only). If you need - features like configuration mode of M105, say yes. - endif # ISDN_DRV_GIGASET diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c index d78385166099..4deb1ab0dbf8 100644 --- a/drivers/isdn/gigaset/usb-gigaset.c +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -153,8 +153,6 @@ static inline unsigned tiocm_to_gigaset(unsigned state) return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0); } -#ifdef CONFIG_GIGASET_UNDOCREQ -/* WARNING: EXPERIMENTAL! */ static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, unsigned new_state) { @@ -176,6 +174,11 @@ static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, return 0; } +/* + * Set M105 configuration value + * using undocumented device commands reverse engineered from USB traces + * of the Siemens Windows driver + */ static int set_value(struct cardstate *cs, u8 req, u16 val) { struct usb_device *udev = cs->hw.usb->udev; @@ -205,8 +208,10 @@ static int set_value(struct cardstate *cs, u8 req, u16 val) return r < 0 ? r : (r2 < 0 ? r2 : 0); } -/* WARNING: HIGHLY EXPERIMENTAL! */ -// don't use this in an interrupt/BH +/* + * set the baud rate on the internal serial adapter + * using the undocumented parameter setting command + */ static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) { u16 val; @@ -237,8 +242,10 @@ static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) return set_value(cs, 1, val); } -/* WARNING: HIGHLY EXPERIMENTAL! */ -// don't use this in an interrupt/BH +/* + * set the line format on the internal serial adapter + * using the undocumented parameter setting command + */ static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) { u16 val = 0; @@ -274,24 +281,6 @@ static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) return set_value(cs, 3, val); } -#else -static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, - unsigned new_state) -{ - return -ENOTTY; -} - -static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) -{ - return -ENOTTY; -} - -static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) -{ - return -ENOTTY; -} -#endif - /*================================================================================================================*/ static int gigaset_init_bchannel(struct bc_state *bcs) @@ -362,10 +351,8 @@ static void gigaset_modem_fill(unsigned long data) } while (again); } -/** - * gigaset_read_int_callback - * - * It is called if the data was received from the device. +/* + * Interrupt Input URB completion routine */ static void gigaset_read_int_callback(struct urb *urb) { @@ -567,18 +554,19 @@ static int gigaset_chars_in_buffer(struct cardstate *cs) return cs->cmdbytes; } +/* + * set the break characters on the internal serial adapter + * using undocumented device commands reverse engineered from USB traces + * of the Siemens Windows driver + */ static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) { -#ifdef CONFIG_GIGASET_UNDOCREQ struct usb_device *udev = cs->hw.usb->udev; gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf); memcpy(cs->hw.usb->bchars, buf, 6); return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41, 0, 0, &buf, 6, 2000); -#else - return -ENOTTY; -#endif } static int gigaset_freebcshw(struct bc_state *bcs) @@ -625,7 +613,6 @@ static int gigaset_initcshw(struct cardstate *cs) ucs->bchars[5] = 0x13; ucs->bulk_out_buffer = NULL; ucs->bulk_out_urb = NULL; - //ucs->urb_cmd_out = NULL; ucs->read_urb = NULL; tasklet_init(&cs->write_tasklet, &gigaset_modem_fill, (unsigned long) cs); @@ -742,7 +729,7 @@ static int gigaset_probe(struct usb_interface *interface, cs->dev = &interface->dev; /* save address of controller structure */ - usb_set_intfdata(interface, cs); // dev_set_drvdata(&interface->dev, cs); + usb_set_intfdata(interface, cs); endpoint = &hostif->endpoint[0].desc; @@ -921,8 +908,7 @@ static const struct gigaset_ops ops = { gigaset_m10x_input, }; -/** - * usb_gigaset_init +/* * This function is called while kernel-module is loaded */ static int __init usb_gigaset_init(void) @@ -952,9 +938,7 @@ error: return -1; } - -/** - * usb_gigaset_exit +/* * This function is called while unloading the kernel-module */ static void __exit usb_gigaset_exit(void) -- cgit v1.2.3 From e20dad964aeac229a204e298c563b6ea7ff1e987 Mon Sep 17 00:00:00 2001 From: Wolfgang Grandegger Date: Fri, 15 May 2009 23:39:27 +0000 Subject: can: Documentation for the CAN device driver interface This patch documents the CAN netowrk device drivers interface, removes obsolete documentation and adds some useful links to CAN resources. Signed-off-by: Wolfgang Grandegger Signed-off-by: Oliver Hartkopp Signed-off-by: David S. Miller --- Documentation/networking/can.txt | 235 ++++++++++++++++++++++++++++++++------- 1 file changed, 197 insertions(+), 38 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/can.txt b/Documentation/networking/can.txt index 2035bc4932f2..6cd6627c3293 100644 --- a/Documentation/networking/can.txt +++ b/Documentation/networking/can.txt @@ -36,10 +36,15 @@ This file contains 6.2 local loopback of sent frames 6.3 CAN controller hardware filters 6.4 The virtual CAN driver (vcan) - 6.5 currently supported CAN hardware - 6.6 todo + 6.5 The CAN network device driver interface + 6.5.1 Netlink interface to set/get devices properties + 6.5.2 Setting the CAN bit-timing + 6.5.3 Starting and stopping the CAN network device + 6.6 supported CAN hardware - 7 Credits + 7 Socket CAN resources + + 8 Credits ============================================================================ @@ -234,6 +239,8 @@ solution for a couple of reasons: the user application using the common CAN filter mechanisms. Inside this filter definition the (interested) type of errors may be selected. The reception of error frames is disabled by default. + The format of the CAN error frame is briefly decribed in the Linux + header file "include/linux/can/error.h". 4. How to use Socket CAN ------------------------ @@ -605,61 +612,213 @@ solution for a couple of reasons: removal of vcan network devices can be managed with the ip(8) tool: - Create a virtual CAN network interface: - ip link add type vcan + $ ip link add type vcan - Create a virtual CAN network interface with a specific name 'vcan42': - ip link add dev vcan42 type vcan + $ ip link add dev vcan42 type vcan - Remove a (virtual CAN) network interface 'vcan42': - ip link del vcan42 - - The tool 'vcan' from the SocketCAN SVN repository on BerliOS is obsolete. - - Virtual CAN network device creation in older Kernels: - In Linux Kernel versions < 2.6.24 the vcan driver creates 4 vcan - netdevices at module load time by default. This value can be changed - with the module parameter 'numdev'. E.g. 'modprobe vcan numdev=8' - - 6.5 currently supported CAN hardware + $ ip link del vcan42 + + 6.5 The CAN network device driver interface + + The CAN network device driver interface provides a generic interface + to setup, configure and monitor CAN network devices. The user can then + configure the CAN device, like setting the bit-timing parameters, via + the netlink interface using the program "ip" from the "IPROUTE2" + utility suite. The following chapter describes briefly how to use it. + Furthermore, the interface uses a common data structure and exports a + set of common functions, which all real CAN network device drivers + should use. Please have a look to the SJA1000 or MSCAN driver to + understand how to use them. The name of the module is can-dev.ko. + + 6.5.1 Netlink interface to set/get devices properties + + The CAN device must be configured via netlink interface. The supported + netlink message types are defined and briefly described in + "include/linux/can/netlink.h". CAN link support for the program "ip" + of the IPROUTE2 utility suite is avaiable and it can be used as shown + below: + + - Setting CAN device properties: + + $ ip link set can0 type can help + Usage: ip link set DEVICE type can + [ bitrate BITRATE [ sample-point SAMPLE-POINT] ] | + [ tq TQ prop-seg PROP_SEG phase-seg1 PHASE-SEG1 + phase-seg2 PHASE-SEG2 [ sjw SJW ] ] + + [ loopback { on | off } ] + [ listen-only { on | off } ] + [ triple-sampling { on | off } ] + + [ restart-ms TIME-MS ] + [ restart ] + + Where: BITRATE := { 1..1000000 } + SAMPLE-POINT := { 0.000..0.999 } + TQ := { NUMBER } + PROP-SEG := { 1..8 } + PHASE-SEG1 := { 1..8 } + PHASE-SEG2 := { 1..8 } + SJW := { 1..4 } + RESTART-MS := { 0 | NUMBER } + + - Display CAN device details and statistics: + + $ ip -details -statistics link show can0 + 2: can0: mtu 16 qdisc pfifo_fast state UP qlen 10 + link/can + can state ERROR-ACTIVE restart-ms 100 + bitrate 125000 sample_point 0.875 + tq 125 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1 + sja1000: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1 + clock 8000000 + re-started bus-errors arbit-lost error-warn error-pass bus-off + 41 17457 0 41 42 41 + RX: bytes packets errors dropped overrun mcast + 140859 17608 17457 0 0 0 + TX: bytes packets errors dropped carrier collsns + 861 112 0 41 0 0 + + More info to the above output: + + "" + Shows the list of selected CAN controller modes: LOOPBACK, + LISTEN-ONLY, or TRIPLE-SAMPLING. + + "state ERROR-ACTIVE" + The current state of the CAN controller: "ERROR-ACTIVE", + "ERROR-WARNING", "ERROR-PASSIVE", "BUS-OFF" or "STOPPED" + + "restart-ms 100" + Automatic restart delay time. If set to a non-zero value, a + restart of the CAN controller will be triggered automatically + in case of a bus-off condition after the specified delay time + in milliseconds. By default it's off. + + "bitrate 125000 sample_point 0.875" + Shows the real bit-rate in bits/sec and the sample-point in the + range 0.000..0.999. If the calculation of bit-timing parameters + is enabled in the kernel (CONFIG_CAN_CALC_BITTIMING=y), the + bit-timing can be defined by setting the "bitrate" argument. + Optionally the "sample-point" can be specified. By default it's + 0.000 assuming CIA-recommended sample-points. + + "tq 125 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1" + Shows the time quanta in ns, propagation segment, phase buffer + segment 1 and 2 and the synchronisation jump width in units of + tq. They allow to define the CAN bit-timing in a hardware + independent format as proposed by the Bosch CAN 2.0 spec (see + chapter 8 of http://www.semiconductors.bosch.de/pdf/can2spec.pdf). + + "sja1000: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1 + clock 8000000" + Shows the bit-timing constants of the CAN controller, here the + "sja1000". The minimum and maximum values of the time segment 1 + and 2, the synchronisation jump width in units of tq, the + bitrate pre-scaler and the CAN system clock frequency in Hz. + These constants could be used for user-defined (non-standard) + bit-timing calculation algorithms in user-space. + + "re-started bus-errors arbit-lost error-warn error-pass bus-off" + Shows the number of restarts, bus and arbitration lost errors, + and the state changes to the error-warning, error-passive and + bus-off state. RX overrun errors are listed in the "overrun" + field of the standard network statistics. + + 6.5.2 Setting the CAN bit-timing + + The CAN bit-timing parameters can always be defined in a hardware + independent format as proposed in the Bosch CAN 2.0 specification + specifying the arguments "tq", "prop_seg", "phase_seg1", "phase_seg2" + and "sjw": + + $ ip link set canX type can tq 125 prop-seg 6 \ + phase-seg1 7 phase-seg2 2 sjw 1 + + If the kernel option CONFIG_CAN_CALC_BITTIMING is enabled, CIA + recommended CAN bit-timing parameters will be calculated if the bit- + rate is specified with the argument "bitrate": + + $ ip link set canX type can bitrate 125000 + + Note that this works fine for the most common CAN controllers with + standard bit-rates but may *fail* for exotic bit-rates or CAN system + clock frequencies. Disabling CONFIG_CAN_CALC_BITTIMING saves some + space and allows user-space tools to solely determine and set the + bit-timing parameters. The CAN controller specific bit-timing + constants can be used for that purpose. They are listed by the + following command: + + $ ip -details link show can0 + ... + sja1000: clock 8000000 tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1 + + 6.5.3 Starting and stopping the CAN network device + + A CAN network device is started or stopped as usual with the command + "ifconfig canX up/down" or "ip link set canX up/down". Be aware that + you *must* define proper bit-timing parameters for real CAN devices + before you can start it to avoid error-prone default settings: + + $ ip link set canX up type can bitrate 125000 + + A device may enter the "bus-off" state if too much errors occurred on + the CAN bus. Then no more messages are received or sent. An automatic + bus-off recovery can be enabled by setting the "restart-ms" to a + non-zero value, e.g.: + + $ ip link set canX type can restart-ms 100 + + Alternatively, the application may realize the "bus-off" condition + by monitoring CAN error frames and do a restart when appropriate with + the command: + + $ ip link set canX type can restart + + Note that a restart will also create a CAN error frame (see also + chapter 3.4). - On the project website http://developer.berlios.de/projects/socketcan - there are different drivers available: + 6.6 Supported CAN hardware - vcan: Virtual CAN interface driver (if no real hardware is available) - sja1000: Philips SJA1000 CAN controller (recommended) - i82527: Intel i82527 CAN controller - mscan: Motorola/Freescale CAN controller (e.g. inside SOC MPC5200) - ccan: CCAN controller core (e.g. inside SOC h7202) - slcan: For a bunch of CAN adaptors that are attached via a - serial line ASCII protocol (for serial / USB adaptors) + Please check the "Kconfig" file in "drivers/net/can" to get an actual + list of the support CAN hardware. On the Socket CAN project website + (see chapter 7) there might be further drivers available, also for + older kernel versions. - Additionally the different CAN adaptors (ISA/PCI/PCMCIA/USB/Parport) - from PEAK Systemtechnik support the CAN netdevice driver model - since Linux driver v6.0: http://www.peak-system.com/linux/index.htm +7. Socket CAN resources +----------------------- - Please check the Mailing Lists on the berlios OSS project website. + You can find further resources for Socket CAN like user space tools, + support for old kernel versions, more drivers, mailing lists, etc. + at the BerliOS OSS project website for Socket CAN: - 6.6 todo + http://developer.berlios.de/projects/socketcan - The configuration interface for CAN network drivers is still an open - issue that has not been finalized in the socketcan project. Also the - idea of having a library module (candev.ko) that holds functions - that are needed by all CAN netdevices is not ready to ship. - Your contribution is welcome. + If you have questions, bug fixes, etc., don't hesitate to post them to + the Socketcan-Users mailing list. But please search the archives first. -7. Credits +8. Credits ---------- - Oliver Hartkopp (PF_CAN core, filters, drivers, bcm) + Oliver Hartkopp (PF_CAN core, filters, drivers, bcm, SJA1000 driver) Urs Thuermann (PF_CAN core, kernel integration, socket interfaces, raw, vcan) Jan Kizka (RT-SocketCAN core, Socket-API reconciliation) - Wolfgang Grandegger (RT-SocketCAN core & drivers, Raw Socket-API reviews) + Wolfgang Grandegger (RT-SocketCAN core & drivers, Raw Socket-API reviews, + CAN device driver interface, MSCAN driver) Robert Schwebel (design reviews, PTXdist integration) Marc Kleine-Budde (design reviews, Kernel 2.6 cleanups, drivers) Benedikt Spranger (reviews) Thomas Gleixner (LKML reviews, coding style, posting hints) - Andrey Volkov (kernel subtree structure, ioctls, mscan driver) + Andrey Volkov (kernel subtree structure, ioctls, MSCAN driver) Matthias Brukner (first SJA1000 CAN netdevice implementation Q2/2003) Klaus Hitschler (PEAK driver integration) Uwe Koppe (CAN netdevices with PF_PACKET approach) Michael Schulze (driver layer loopback requirement, RT CAN drivers review) + Pavel Pisa (Bit-timing calculation) + Sascha Hauer (SJA1000 platform driver) + Sebastian Haas (SJA1000 EMS PCI driver) + Markus Plessing (SJA1000 EMS PCI driver) + Per Dalen (SJA1000 Kvaser PCI driver) + Sam Ravnborg (reviews, coding style, kbuild help) -- cgit v1.2.3 From 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 Mon Sep 17 00:00:00 2001 From: Johann Baudy Date: Mon, 18 May 2009 22:11:22 -0700 Subject: net: TX_RING and packet mmap New packet socket feature that makes packet socket more efficient for transmission. - It reduces number of system call through a PACKET_TX_RING mechanism, based on PACKET_RX_RING (Circular buffer allocated in kernel space which is mmapped from user space). - It minimizes CPU copy using fragmented SKB (almost zero copy). Signed-off-by: Johann Baudy Signed-off-by: David S. Miller --- Documentation/networking/packet_mmap.txt | 140 +++++++- include/linux/if_packet.h | 20 +- include/linux/skbuff.h | 3 + net/packet/af_packet.c | 588 +++++++++++++++++++++++++------ 4 files changed, 616 insertions(+), 135 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/packet_mmap.txt b/Documentation/networking/packet_mmap.txt index 07c53d596035..a22fd85e3796 100644 --- a/Documentation/networking/packet_mmap.txt +++ b/Documentation/networking/packet_mmap.txt @@ -4,16 +4,18 @@ This file documents the CONFIG_PACKET_MMAP option available with the PACKET socket interface on 2.4 and 2.6 kernels. This type of sockets is used for -capture network traffic with utilities like tcpdump or any other that uses -the libpcap library. - -You can find the latest version of this document at +capture network traffic with utilities like tcpdump or any other that needs +raw access to network interface. +You can find the latest version of this document at: http://pusa.uv.es/~ulisses/packet_mmap/ -Please send me your comments to +Howto can be found at: + http://wiki.gnu-log.net (packet_mmap) +Please send your comments to Ulisses Alonso Camaró + Johann Baudy ------------------------------------------------------------------------------- + Why use PACKET_MMAP @@ -25,19 +27,24 @@ to capture each packet, it requires two if you want to get packet's timestamp (like libpcap always does). In the other hand PACKET_MMAP is very efficient. PACKET_MMAP provides a size -configurable circular buffer mapped in user space. This way reading packets just -needs to wait for them, most of the time there is no need to issue a single -system call. By using a shared buffer between the kernel and the user -also has the benefit of minimizing packet copies. - -It's fine to use PACKET_MMAP to improve the performance of the capture process, -but it isn't everything. At least, if you are capturing at high speeds (this -is relative to the cpu speed), you should check if the device driver of your -network interface card supports some sort of interrupt load mitigation or -(even better) if it supports NAPI, also make sure it is enabled. +configurable circular buffer mapped in user space that can be used to either +send or receive packets. This way reading packets just needs to wait for them, +most of the time there is no need to issue a single system call. Concerning +transmission, multiple packets can be sent through one system call to get the +highest bandwidth. +By using a shared buffer between the kernel and the user also has the benefit +of minimizing packet copies. + +It's fine to use PACKET_MMAP to improve the performance of the capture and +transmission process, but it isn't everything. At least, if you are capturing +at high speeds (this is relative to the cpu speed), you should check if the +device driver of your network interface card supports some sort of interrupt +load mitigation or (even better) if it supports NAPI, also make sure it is +enabled. For transmission, check the MTU (Maximum Transmission Unit) used and +supported by devices of your network. -------------------------------------------------------------------------------- -+ How to use CONFIG_PACKET_MMAP ++ How to use CONFIG_PACKET_MMAP to improve capture process -------------------------------------------------------------------------------- From the user standpoint, you should use the higher level libpcap library, which @@ -57,7 +64,7 @@ the low level details or want to improve libpcap by including PACKET_MMAP support. -------------------------------------------------------------------------------- -+ How to use CONFIG_PACKET_MMAP directly ++ How to use CONFIG_PACKET_MMAP directly to improve capture process -------------------------------------------------------------------------------- From the system calls stand point, the use of PACKET_MMAP involves @@ -66,6 +73,7 @@ the following process: [setup] socket() -------> creation of the capture socket setsockopt() ---> allocation of the circular buffer (ring) + option: PACKET_RX_RING mmap() ---------> mapping of the allocated buffer to the user process @@ -96,6 +104,65 @@ Next I will describe PACKET_MMAP settings and it's constraints, also the mapping of the circular buffer in the user process and the use of this buffer. +-------------------------------------------------------------------------------- ++ How to use CONFIG_PACKET_MMAP directly to improve transmission process +-------------------------------------------------------------------------------- +Transmission process is similar to capture as shown below. + +[setup] socket() -------> creation of the transmission socket + setsockopt() ---> allocation of the circular buffer (ring) + option: PACKET_TX_RING + bind() ---------> bind transmission socket with a network interface + mmap() ---------> mapping of the allocated buffer to the + user process + +[transmission] poll() ---------> wait for free packets (optional) + send() ---------> send all packets that are set as ready in + the ring + The flag MSG_DONTWAIT can be used to return + before end of transfer. + +[shutdown] close() --------> destruction of the transmission socket and + deallocation of all associated resources. + +Binding the socket to your network interface is mandatory (with zero copy) to +know the header size of frames used in the circular buffer. + +As capture, each frame contains two parts: + + -------------------- +| struct tpacket_hdr | Header. It contains the status of +| | of this frame +|--------------------| +| data buffer | +. . Data that will be sent over the network interface. +. . + -------------------- + + bind() associates the socket to your network interface thanks to + sll_ifindex parameter of struct sockaddr_ll. + + Initialization example: + + struct sockaddr_ll my_addr; + struct ifreq s_ifr; + ... + + strncpy (s_ifr.ifr_name, "eth0", sizeof(s_ifr.ifr_name)); + + /* get interface index of eth0 */ + ioctl(this->socket, SIOCGIFINDEX, &s_ifr); + + /* fill sockaddr_ll struct to prepare binding */ + my_addr.sll_family = AF_PACKET; + my_addr.sll_protocol = ETH_P_ALL; + my_addr.sll_ifindex = s_ifr.ifr_ifindex; + + /* bind socket to eth0 */ + bind(this->socket, (struct sockaddr *)&my_addr, sizeof(struct sockaddr_ll)); + + A complete tutorial is available at: http://wiki.gnu-log.net/ + -------------------------------------------------------------------------------- + PACKET_MMAP settings -------------------------------------------------------------------------------- @@ -103,7 +170,10 @@ the use of this buffer. To setup PACKET_MMAP from user level code is done with a call like + - Capture process setsockopt(fd, SOL_PACKET, PACKET_RX_RING, (void *) &req, sizeof(req)) + - Transmission process + setsockopt(fd, SOL_PACKET, PACKET_TX_RING, (void *) &req, sizeof(req)) The most significant argument in the previous call is the req parameter, this parameter must to have the following structure: @@ -117,11 +187,11 @@ this parameter must to have the following structure: }; This structure is defined in /usr/include/linux/if_packet.h and establishes a -circular buffer (ring) of unswappable memory mapped in the capture process. +circular buffer (ring) of unswappable memory. Being mapped in the capture process allows reading the captured frames and related meta-information like timestamps without requiring a system call. -Captured frames are grouped in blocks. Each block is a physically contiguous +Frames are grouped in blocks. Each block is a physically contiguous region of memory and holds tp_block_size/tp_frame_size frames. The total number of blocks is tp_block_nr. Note that tp_frame_nr is a redundant parameter because @@ -336,6 +406,7 @@ struct tpacket_hdr). If this field is 0 means that the frame is ready to be used for the kernel, If not, there is a frame the user can read and the following flags apply: ++++ Capture process: from include/linux/if_packet.h #define TP_STATUS_COPY 2 @@ -391,6 +462,37 @@ packets are in the ring: It doesn't incur in a race condition to first check the status value and then poll for frames. + +++ Transmission process +Those defines are also used for transmission: + + #define TP_STATUS_AVAILABLE 0 // Frame is available + #define TP_STATUS_SEND_REQUEST 1 // Frame will be sent on next send() + #define TP_STATUS_SENDING 2 // Frame is currently in transmission + #define TP_STATUS_WRONG_FORMAT 4 // Frame format is not correct + +First, the kernel initializes all frames to TP_STATUS_AVAILABLE. To send a +packet, the user fills a data buffer of an available frame, sets tp_len to +current data buffer size and sets its status field to TP_STATUS_SEND_REQUEST. +This can be done on multiple frames. Once the user is ready to transmit, it +calls send(). Then all buffers with status equal to TP_STATUS_SEND_REQUEST are +forwarded to the network device. The kernel updates each status of sent +frames with TP_STATUS_SENDING until the end of transfer. +At the end of each transfer, buffer status returns to TP_STATUS_AVAILABLE. + + header->tp_len = in_i_size; + header->tp_status = TP_STATUS_SEND_REQUEST; + retval = send(this->socket, NULL, 0, 0); + +The user can also use poll() to check if a buffer is available: +(status == TP_STATUS_SENDING) + + struct pollfd pfd; + pfd.fd = fd; + pfd.revents = 0; + pfd.events = POLLOUT; + retval = poll(&pfd, 1, timeout); + -------------------------------------------------------------------------------- + THANKS -------------------------------------------------------------------------------- diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h index 18db0668065a..5b2badeb9497 100644 --- a/include/linux/if_packet.h +++ b/include/linux/if_packet.h @@ -46,6 +46,8 @@ struct sockaddr_ll #define PACKET_VERSION 10 #define PACKET_HDRLEN 11 #define PACKET_RESERVE 12 +#define PACKET_TX_RING 13 +#define PACKET_LOSS 14 struct tpacket_stats { @@ -63,14 +65,22 @@ struct tpacket_auxdata __u16 tp_vlan_tci; }; +/* Rx ring - header status */ +#define TP_STATUS_KERNEL 0x0 +#define TP_STATUS_USER 0x1 +#define TP_STATUS_COPY 0x2 +#define TP_STATUS_LOSING 0x4 +#define TP_STATUS_CSUMNOTREADY 0x8 + +/* Tx ring - header status */ +#define TP_STATUS_AVAILABLE 0x0 +#define TP_STATUS_SEND_REQUEST 0x1 +#define TP_STATUS_SENDING 0x2 +#define TP_STATUS_WRONG_FORMAT 0x4 + struct tpacket_hdr { unsigned long tp_status; -#define TP_STATUS_KERNEL 0 -#define TP_STATUS_USER 1 -#define TP_STATUS_COPY 2 -#define TP_STATUS_LOSING 4 -#define TP_STATUS_CSUMNOTREADY 8 unsigned int tp_len; unsigned int tp_snaplen; unsigned short tp_mac; diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 1b5c3d298f43..aff494ba6a31 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -203,6 +203,9 @@ struct skb_shared_info { #ifdef CONFIG_HAS_DMA dma_addr_t dma_maps[MAX_SKB_FRAGS + 1]; #endif + /* Intermediate layers must ensure that destructor_arg + * remains valid until skb destructor */ + void * destructor_arg; }; /* We divide dataref into two halves. The higher 16 bits hold references diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index f546e81acc45..766e6b41f7ca 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -39,6 +39,7 @@ * will simply extend the hardware address * byte arrays at the end of sockaddr_ll * and packet_mreq. + * Johann Baudy : Added TX RING. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -157,7 +158,25 @@ struct packet_mreq_max }; #ifdef CONFIG_PACKET_MMAP -static int packet_set_ring(struct sock *sk, struct tpacket_req *req, int closing); +static int packet_set_ring(struct sock *sk, struct tpacket_req *req, + int closing, int tx_ring); + +struct packet_ring_buffer { + char * *pg_vec; + unsigned int head; + unsigned int frames_per_block; + unsigned int frame_size; + unsigned int frame_max; + + unsigned int pg_vec_order; + unsigned int pg_vec_pages; + unsigned int pg_vec_len; + + atomic_t pending; +}; + +struct packet_sock; +static int tpacket_snd(struct packet_sock *po, struct msghdr *msg); #endif static void packet_flush_mclist(struct sock *sk); @@ -167,11 +186,8 @@ struct packet_sock { struct sock sk; struct tpacket_stats stats; #ifdef CONFIG_PACKET_MMAP - char * *pg_vec; - unsigned int head; - unsigned int frames_per_block; - unsigned int frame_size; - unsigned int frame_max; + struct packet_ring_buffer rx_ring; + struct packet_ring_buffer tx_ring; int copy_thresh; #endif struct packet_type prot_hook; @@ -185,12 +201,10 @@ struct packet_sock { struct packet_mclist *mclist; #ifdef CONFIG_PACKET_MMAP atomic_t mapped; - unsigned int pg_vec_order; - unsigned int pg_vec_pages; - unsigned int pg_vec_len; enum tpacket_versions tp_version; unsigned int tp_hdrlen; unsigned int tp_reserve; + unsigned int tp_loss:1; #endif }; @@ -206,36 +220,33 @@ struct packet_skb_cb { #ifdef CONFIG_PACKET_MMAP -static void *packet_lookup_frame(struct packet_sock *po, unsigned int position, - int status) +static void __packet_set_status(struct packet_sock *po, void *frame, int status) { - unsigned int pg_vec_pos, frame_offset; union { struct tpacket_hdr *h1; struct tpacket2_hdr *h2; void *raw; } h; - pg_vec_pos = position / po->frames_per_block; - frame_offset = position % po->frames_per_block; - - h.raw = po->pg_vec[pg_vec_pos] + (frame_offset * po->frame_size); + h.raw = frame; switch (po->tp_version) { case TPACKET_V1: - if (status != (h.h1->tp_status ? TP_STATUS_USER : - TP_STATUS_KERNEL)) - return NULL; + h.h1->tp_status = status; + flush_dcache_page(virt_to_page(&h.h1->tp_status)); break; case TPACKET_V2: - if (status != (h.h2->tp_status ? TP_STATUS_USER : - TP_STATUS_KERNEL)) - return NULL; + h.h2->tp_status = status; + flush_dcache_page(virt_to_page(&h.h2->tp_status)); break; + default: + printk(KERN_ERR "TPACKET version not supported\n"); + BUG(); } - return h.raw; + + smp_wmb(); } -static void __packet_set_status(struct packet_sock *po, void *frame, int status) +static int __packet_get_status(struct packet_sock *po, void *frame) { union { struct tpacket_hdr *h1; @@ -243,16 +254,66 @@ static void __packet_set_status(struct packet_sock *po, void *frame, int status) void *raw; } h; + smp_rmb(); + h.raw = frame; switch (po->tp_version) { case TPACKET_V1: - h.h1->tp_status = status; - break; + flush_dcache_page(virt_to_page(&h.h1->tp_status)); + return h.h1->tp_status; case TPACKET_V2: - h.h2->tp_status = status; - break; + flush_dcache_page(virt_to_page(&h.h2->tp_status)); + return h.h2->tp_status; + default: + printk(KERN_ERR "TPACKET version not supported\n"); + BUG(); + return 0; } } + +static void *packet_lookup_frame(struct packet_sock *po, + struct packet_ring_buffer *rb, + unsigned int position, + int status) +{ + unsigned int pg_vec_pos, frame_offset; + union { + struct tpacket_hdr *h1; + struct tpacket2_hdr *h2; + void *raw; + } h; + + pg_vec_pos = position / rb->frames_per_block; + frame_offset = position % rb->frames_per_block; + + h.raw = rb->pg_vec[pg_vec_pos] + (frame_offset * rb->frame_size); + + if (status != __packet_get_status(po, h.raw)) + return NULL; + + return h.raw; +} + +static inline void *packet_current_frame(struct packet_sock *po, + struct packet_ring_buffer *rb, + int status) +{ + return packet_lookup_frame(po, rb, rb->head, status); +} + +static inline void *packet_previous_frame(struct packet_sock *po, + struct packet_ring_buffer *rb, + int status) +{ + unsigned int previous = rb->head ? rb->head - 1 : rb->frame_max; + return packet_lookup_frame(po, rb, previous, status); +} + +static inline void packet_increment_head(struct packet_ring_buffer *buff) +{ + buff->head = buff->head != buff->frame_max ? buff->head+1 : 0; +} + #endif static inline struct packet_sock *pkt_sk(struct sock *sk) @@ -648,7 +709,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe macoff = netoff - maclen; } - if (macoff + snaplen > po->frame_size) { + if (macoff + snaplen > po->rx_ring.frame_size) { if (po->copy_thresh && atomic_read(&sk->sk_rmem_alloc) + skb->truesize < (unsigned)sk->sk_rcvbuf) { @@ -661,16 +722,16 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe if (copy_skb) skb_set_owner_r(copy_skb, sk); } - snaplen = po->frame_size - macoff; + snaplen = po->rx_ring.frame_size - macoff; if ((int)snaplen < 0) snaplen = 0; } spin_lock(&sk->sk_receive_queue.lock); - h.raw = packet_lookup_frame(po, po->head, TP_STATUS_KERNEL); + h.raw = packet_current_frame(po, &po->rx_ring, TP_STATUS_KERNEL); if (!h.raw) goto ring_is_full; - po->head = po->head != po->frame_max ? po->head+1 : 0; + packet_increment_head(&po->rx_ring); po->stats.tp_packets++; if (copy_skb) { status |= TP_STATUS_COPY; @@ -727,7 +788,6 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe __packet_set_status(po, h.raw, status); smp_mb(); - { struct page *p_start, *p_end; u8 *h_end = h.raw + macoff + snaplen - 1; @@ -760,10 +820,249 @@ ring_is_full: goto drop_n_restore; } -#endif +static void tpacket_destruct_skb(struct sk_buff *skb) +{ + struct packet_sock *po = pkt_sk(skb->sk); + void * ph; + BUG_ON(skb == NULL); -static int packet_sendmsg(struct kiocb *iocb, struct socket *sock, + if (likely(po->tx_ring.pg_vec)) { + ph = skb_shinfo(skb)->destructor_arg; + BUG_ON(__packet_get_status(po, ph) != TP_STATUS_SENDING); + BUG_ON(atomic_read(&po->tx_ring.pending) == 0); + atomic_dec(&po->tx_ring.pending); + __packet_set_status(po, ph, TP_STATUS_AVAILABLE); + } + + sock_wfree(skb); +} + +static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff * skb, + void * frame, struct net_device *dev, int size_max, + __be16 proto, unsigned char * addr) +{ + union { + struct tpacket_hdr *h1; + struct tpacket2_hdr *h2; + void *raw; + } ph; + int to_write, offset, len, tp_len, nr_frags, len_max; + struct socket *sock = po->sk.sk_socket; + struct page *page; + void *data; + int err; + + ph.raw = frame; + + skb->protocol = proto; + skb->dev = dev; + skb->priority = po->sk.sk_priority; + skb_shinfo(skb)->destructor_arg = ph.raw; + + switch (po->tp_version) { + case TPACKET_V2: + tp_len = ph.h2->tp_len; + break; + default: + tp_len = ph.h1->tp_len; + break; + } + if (unlikely(tp_len > size_max)) { + printk(KERN_ERR "packet size is too long (%d > %d)\n", + tp_len, size_max); + return -EMSGSIZE; + } + + skb_reserve(skb, LL_RESERVED_SPACE(dev)); + skb_reset_network_header(skb); + + data = ph.raw + po->tp_hdrlen - sizeof(struct sockaddr_ll); + to_write = tp_len; + + if (sock->type == SOCK_DGRAM) { + err = dev_hard_header(skb, dev, ntohs(proto), addr, + NULL, tp_len); + if (unlikely(err < 0)) + return -EINVAL; + } else if (dev->hard_header_len ) { + /* net device doesn't like empty head */ + if (unlikely(tp_len <= dev->hard_header_len)) { + printk(KERN_ERR "packet size is too short " + "(%d < %d)\n", tp_len, + dev->hard_header_len); + return -EINVAL; + } + + skb_push(skb, dev->hard_header_len); + err = skb_store_bits(skb, 0, data, + dev->hard_header_len); + if (unlikely(err)) + return err; + + data += dev->hard_header_len; + to_write -= dev->hard_header_len; + } + + err = -EFAULT; + page = virt_to_page(data); + offset = offset_in_page(data); + len_max = PAGE_SIZE - offset; + len = ((to_write > len_max) ? len_max : to_write); + + skb->data_len = to_write; + skb->len += to_write; + skb->truesize += to_write; + atomic_add(to_write, &po->sk.sk_wmem_alloc); + + while (likely(to_write)) { + nr_frags = skb_shinfo(skb)->nr_frags; + + if (unlikely(nr_frags >= MAX_SKB_FRAGS)) { + printk(KERN_ERR "Packet exceed the number " + "of skb frags(%lu)\n", + MAX_SKB_FRAGS); + return -EFAULT; + } + + flush_dcache_page(page); + get_page(page); + skb_fill_page_desc(skb, + nr_frags, + page++, offset, len); + to_write -= len; + offset = 0; + len_max = PAGE_SIZE; + len = ((to_write > len_max) ? len_max : to_write); + } + + return tp_len; +} + +static int tpacket_snd(struct packet_sock *po, struct msghdr *msg) +{ + struct socket *sock; + struct sk_buff *skb; + struct net_device *dev; + __be16 proto; + int ifindex, err, reserve = 0; + void * ph; + struct sockaddr_ll *saddr=(struct sockaddr_ll *)msg->msg_name; + int tp_len, size_max; + unsigned char *addr; + int len_sum = 0; + int status = 0; + + sock = po->sk.sk_socket; + + mutex_lock(&po->pg_vec_lock); + + err = -EBUSY; + if (saddr == NULL) { + ifindex = po->ifindex; + proto = po->num; + addr = NULL; + } else { + err = -EINVAL; + if (msg->msg_namelen < sizeof(struct sockaddr_ll)) + goto out; + if (msg->msg_namelen < (saddr->sll_halen + + offsetof(struct sockaddr_ll, + sll_addr))) + goto out; + ifindex = saddr->sll_ifindex; + proto = saddr->sll_protocol; + addr = saddr->sll_addr; + } + + dev = dev_get_by_index(sock_net(&po->sk), ifindex); + err = -ENXIO; + if (unlikely(dev == NULL)) + goto out; + + reserve = dev->hard_header_len; + + err = -ENETDOWN; + if (unlikely(!(dev->flags & IFF_UP))) + goto out_put; + + size_max = po->tx_ring.frame_size + - sizeof(struct skb_shared_info) + - po->tp_hdrlen + - LL_ALLOCATED_SPACE(dev) + - sizeof(struct sockaddr_ll); + + if (size_max > dev->mtu + reserve) + size_max = dev->mtu + reserve; + + do { + ph = packet_current_frame(po, &po->tx_ring, + TP_STATUS_SEND_REQUEST); + + if (unlikely(ph == NULL)) { + schedule(); + continue; + } + + status = TP_STATUS_SEND_REQUEST; + skb = sock_alloc_send_skb(&po->sk, + LL_ALLOCATED_SPACE(dev) + + sizeof(struct sockaddr_ll), + 0, &err); + + if (unlikely(skb == NULL)) + goto out_status; + + tp_len = tpacket_fill_skb(po, skb, ph, dev, size_max, proto, + addr); + + if (unlikely(tp_len < 0)) { + if (po->tp_loss) { + __packet_set_status(po, ph, + TP_STATUS_AVAILABLE); + packet_increment_head(&po->tx_ring); + kfree_skb(skb); + continue; + } else { + status = TP_STATUS_WRONG_FORMAT; + err = tp_len; + goto out_status; + } + } + + skb->destructor = tpacket_destruct_skb; + __packet_set_status(po, ph, TP_STATUS_SENDING); + atomic_inc(&po->tx_ring.pending); + + status = TP_STATUS_SEND_REQUEST; + err = dev_queue_xmit(skb); + if (unlikely(err > 0 && (err = net_xmit_errno(err)) != 0)) + goto out_xmit; + packet_increment_head(&po->tx_ring); + len_sum += tp_len; + } + while (likely((ph != NULL) || ((!(msg->msg_flags & MSG_DONTWAIT)) + && (atomic_read(&po->tx_ring.pending)))) + ); + + err = len_sum; + goto out_put; + +out_xmit: + skb->destructor = sock_wfree; + atomic_dec(&po->tx_ring.pending); +out_status: + __packet_set_status(po, ph, status); + kfree_skb(skb); +out_put: + dev_put(dev); +out: + mutex_unlock(&po->pg_vec_lock); + return err; +} +#endif + +static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len) { struct sock *sk = sock->sk; @@ -854,6 +1153,19 @@ out: return err; } +static int packet_sendmsg(struct kiocb *iocb, struct socket *sock, + struct msghdr *msg, size_t len) +{ +#ifdef CONFIG_PACKET_MMAP + struct sock *sk = sock->sk; + struct packet_sock *po = pkt_sk(sk); + if (po->tx_ring.pg_vec) + return tpacket_snd(po, msg); + else +#endif + return packet_snd(sock, msg, len); +} + /* * Close a PACKET socket. This is fairly simple. We immediately go * to 'closed' state and remove our protocol entry in the device list. @@ -864,6 +1176,9 @@ static int packet_release(struct socket *sock) struct sock *sk = sock->sk; struct packet_sock *po; struct net *net; +#ifdef CONFIG_PACKET_MMAP + struct tpacket_req req; +#endif if (!sk) return 0; @@ -893,11 +1208,13 @@ static int packet_release(struct socket *sock) packet_flush_mclist(sk); #ifdef CONFIG_PACKET_MMAP - if (po->pg_vec) { - struct tpacket_req req; - memset(&req, 0, sizeof(req)); - packet_set_ring(sk, &req, 1); - } + memset(&req, 0, sizeof(req)); + + if (po->rx_ring.pg_vec) + packet_set_ring(sk, &req, 1, 0); + + if (po->tx_ring.pg_vec) + packet_set_ring(sk, &req, 1, 1); #endif /* @@ -1391,7 +1708,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv if (level != SOL_PACKET) return -ENOPROTOOPT; - switch(optname) { + switch (optname) { case PACKET_ADD_MEMBERSHIP: case PACKET_DROP_MEMBERSHIP: { @@ -1415,6 +1732,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv #ifdef CONFIG_PACKET_MMAP case PACKET_RX_RING: + case PACKET_TX_RING: { struct tpacket_req req; @@ -1422,7 +1740,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv return -EINVAL; if (copy_from_user(&req,optval,sizeof(req))) return -EFAULT; - return packet_set_ring(sk, &req, 0); + return packet_set_ring(sk, &req, 0, optname == PACKET_TX_RING); } case PACKET_COPY_THRESH: { @@ -1442,7 +1760,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv if (optlen != sizeof(val)) return -EINVAL; - if (po->pg_vec) + if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) return -EBUSY; if (copy_from_user(&val, optval, sizeof(val))) return -EFAULT; @@ -1461,13 +1779,26 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv if (optlen != sizeof(val)) return -EINVAL; - if (po->pg_vec) + if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) return -EBUSY; if (copy_from_user(&val, optval, sizeof(val))) return -EFAULT; po->tp_reserve = val; return 0; } + case PACKET_LOSS: + { + unsigned int val; + + if (optlen != sizeof(val)) + return -EINVAL; + if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) + return -EBUSY; + if (copy_from_user(&val, optval, sizeof(val))) + return -EFAULT; + po->tp_loss = !!val; + return 0; + } #endif case PACKET_AUXDATA: { @@ -1517,7 +1848,7 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, if (len < 0) return -EINVAL; - switch(optname) { + switch (optname) { case PACKET_STATISTICS: if (len > sizeof(struct tpacket_stats)) len = sizeof(struct tpacket_stats); @@ -1573,6 +1904,12 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, val = po->tp_reserve; data = &val; break; + case PACKET_LOSS: + if (len > sizeof(unsigned int)) + len = sizeof(unsigned int); + val = po->tp_loss; + data = &val; + break; #endif default: return -ENOPROTOOPT; @@ -1643,7 +1980,7 @@ static int packet_ioctl(struct socket *sock, unsigned int cmd, { struct sock *sk = sock->sk; - switch(cmd) { + switch (cmd) { case SIOCOUTQ: { int amount = atomic_read(&sk->sk_wmem_alloc); @@ -1705,13 +2042,17 @@ static unsigned int packet_poll(struct file * file, struct socket *sock, unsigned int mask = datagram_poll(file, sock, wait); spin_lock_bh(&sk->sk_receive_queue.lock); - if (po->pg_vec) { - unsigned last = po->head ? po->head-1 : po->frame_max; - - if (packet_lookup_frame(po, last, TP_STATUS_USER)) + if (po->rx_ring.pg_vec) { + if (!packet_previous_frame(po, &po->rx_ring, TP_STATUS_KERNEL)) mask |= POLLIN | POLLRDNORM; } spin_unlock_bh(&sk->sk_receive_queue.lock); + spin_lock_bh(&sk->sk_write_queue.lock); + if (po->tx_ring.pg_vec) { + if (packet_current_frame(po, &po->tx_ring, TP_STATUS_AVAILABLE)) + mask |= POLLOUT | POLLWRNORM; + } + spin_unlock_bh(&sk->sk_write_queue.lock); return mask; } @@ -1788,21 +2129,33 @@ out_free_pgvec: goto out; } -static int packet_set_ring(struct sock *sk, struct tpacket_req *req, int closing) +static int packet_set_ring(struct sock *sk, struct tpacket_req *req, + int closing, int tx_ring) { char **pg_vec = NULL; struct packet_sock *po = pkt_sk(sk); int was_running, order = 0; + struct packet_ring_buffer *rb; + struct sk_buff_head *rb_queue; __be16 num; - int err = 0; + int err; - if (req->tp_block_nr) { - int i; + rb = tx_ring ? &po->tx_ring : &po->rx_ring; + rb_queue = tx_ring ? &sk->sk_write_queue : &sk->sk_receive_queue; - /* Sanity tests and some calculations */ + err = -EBUSY; + if (!closing) { + if (atomic_read(&po->mapped)) + goto out; + if (atomic_read(&rb->pending)) + goto out; + } - if (unlikely(po->pg_vec)) - return -EBUSY; + if (req->tp_block_nr) { + /* Sanity tests and some calculations */ + err = -EBUSY; + if (unlikely(rb->pg_vec)) + goto out; switch (po->tp_version) { case TPACKET_V1: @@ -1813,42 +2166,35 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req, int closing break; } + err = -EINVAL; if (unlikely((int)req->tp_block_size <= 0)) - return -EINVAL; + goto out; if (unlikely(req->tp_block_size & (PAGE_SIZE - 1))) - return -EINVAL; + goto out; if (unlikely(req->tp_frame_size < po->tp_hdrlen + - po->tp_reserve)) - return -EINVAL; + po->tp_reserve)) + goto out; if (unlikely(req->tp_frame_size & (TPACKET_ALIGNMENT - 1))) - return -EINVAL; + goto out; - po->frames_per_block = req->tp_block_size/req->tp_frame_size; - if (unlikely(po->frames_per_block <= 0)) - return -EINVAL; - if (unlikely((po->frames_per_block * req->tp_block_nr) != - req->tp_frame_nr)) - return -EINVAL; + rb->frames_per_block = req->tp_block_size/req->tp_frame_size; + if (unlikely(rb->frames_per_block <= 0)) + goto out; + if (unlikely((rb->frames_per_block * req->tp_block_nr) != + req->tp_frame_nr)) + goto out; err = -ENOMEM; order = get_order(req->tp_block_size); pg_vec = alloc_pg_vec(req, order); if (unlikely(!pg_vec)) goto out; - - for (i = 0; i < req->tp_block_nr; i++) { - void *ptr = pg_vec[i]; - int k; - - for (k = 0; k < po->frames_per_block; k++) { - __packet_set_status(po, ptr, TP_STATUS_KERNEL); - ptr += req->tp_frame_size; - } - } - /* Done */ - } else { + } + /* Done */ + else { + err = -EINVAL; if (unlikely(req->tp_frame_nr)) - return -EINVAL; + goto out; } lock_sock(sk); @@ -1872,23 +2218,24 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req, int closing if (closing || atomic_read(&po->mapped) == 0) { err = 0; #define XC(a, b) ({ __typeof__ ((a)) __t; __t = (a); (a) = (b); __t; }) - - spin_lock_bh(&sk->sk_receive_queue.lock); - pg_vec = XC(po->pg_vec, pg_vec); - po->frame_max = (req->tp_frame_nr - 1); - po->head = 0; - po->frame_size = req->tp_frame_size; - spin_unlock_bh(&sk->sk_receive_queue.lock); - - order = XC(po->pg_vec_order, order); - req->tp_block_nr = XC(po->pg_vec_len, req->tp_block_nr); - - po->pg_vec_pages = req->tp_block_size/PAGE_SIZE; - po->prot_hook.func = po->pg_vec ? tpacket_rcv : packet_rcv; - skb_queue_purge(&sk->sk_receive_queue); + spin_lock_bh(&rb_queue->lock); + pg_vec = XC(rb->pg_vec, pg_vec); + rb->frame_max = (req->tp_frame_nr - 1); + rb->head = 0; + rb->frame_size = req->tp_frame_size; + spin_unlock_bh(&rb_queue->lock); + + order = XC(rb->pg_vec_order, order); + req->tp_block_nr = XC(rb->pg_vec_len, req->tp_block_nr); + + rb->pg_vec_pages = req->tp_block_size/PAGE_SIZE; + po->prot_hook.func = (po->rx_ring.pg_vec) ? + tpacket_rcv : packet_rcv; + skb_queue_purge(rb_queue); #undef XC if (atomic_read(&po->mapped)) - printk(KERN_DEBUG "packet_mmap: vma is busy: %d\n", atomic_read(&po->mapped)); + printk(KERN_DEBUG "packet_mmap: vma is busy: %d\n", + atomic_read(&po->mapped)); } mutex_unlock(&po->pg_vec_lock); @@ -1909,11 +2256,13 @@ out: return err; } -static int packet_mmap(struct file *file, struct socket *sock, struct vm_area_struct *vma) +static int packet_mmap(struct file *file, struct socket *sock, + struct vm_area_struct *vma) { struct sock *sk = sock->sk; struct packet_sock *po = pkt_sk(sk); - unsigned long size; + unsigned long size, expected_size; + struct packet_ring_buffer *rb; unsigned long start; int err = -EINVAL; int i; @@ -1921,26 +2270,43 @@ static int packet_mmap(struct file *file, struct socket *sock, struct vm_area_st if (vma->vm_pgoff) return -EINVAL; - size = vma->vm_end - vma->vm_start; - mutex_lock(&po->pg_vec_lock); - if (po->pg_vec == NULL) + + expected_size = 0; + for (rb = &po->rx_ring; rb <= &po->tx_ring; rb++) { + if (rb->pg_vec) { + expected_size += rb->pg_vec_len + * rb->pg_vec_pages + * PAGE_SIZE; + } + } + + if (expected_size == 0) goto out; - if (size != po->pg_vec_len*po->pg_vec_pages*PAGE_SIZE) + + size = vma->vm_end - vma->vm_start; + if (size != expected_size) goto out; start = vma->vm_start; - for (i = 0; i < po->pg_vec_len; i++) { - struct page *page = virt_to_page(po->pg_vec[i]); - int pg_num; - - for (pg_num = 0; pg_num < po->pg_vec_pages; pg_num++, page++) { - err = vm_insert_page(vma, start, page); - if (unlikely(err)) - goto out; - start += PAGE_SIZE; + for (rb = &po->rx_ring; rb <= &po->tx_ring; rb++) { + if (rb->pg_vec == NULL) + continue; + + for (i = 0; i < rb->pg_vec_len; i++) { + struct page *page = virt_to_page(rb->pg_vec[i]); + int pg_num; + + for (pg_num = 0; pg_num < rb->pg_vec_pages; + pg_num++,page++) { + err = vm_insert_page(vma, start, page); + if (unlikely(err)) + goto out; + start += PAGE_SIZE; + } } } + atomic_inc(&po->mapped); vma->vm_ops = &packet_mmap_ops; err = 0; -- cgit v1.2.3 From cce4c77b87ce7e71a0f244a3dfb6ac1c3a1bc67e Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 19 May 2009 10:39:34 +0200 Subject: mac80211: fix kernel-doc Moving information from config_interface to bss_info_changed removed struct ieee80211_if_conf which the documentation still refers to, additionally there's one kernel-doc description too much and one other missing, fix all this. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- Documentation/DocBook/mac80211.tmpl | 1 - include/net/mac80211.h | 1 - net/mac80211/sta_info.h | 1 + 3 files changed, 1 insertion(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/DocBook/mac80211.tmpl b/Documentation/DocBook/mac80211.tmpl index fbeaffc1dcc3..e36986663570 100644 --- a/Documentation/DocBook/mac80211.tmpl +++ b/Documentation/DocBook/mac80211.tmpl @@ -145,7 +145,6 @@ usage should require reading the full document. interface in STA mode at first! !Finclude/net/mac80211.h ieee80211_if_init_conf -!Finclude/net/mac80211.h ieee80211_if_conf diff --git a/include/net/mac80211.h b/include/net/mac80211.h index d10ed1776fcd..2d0610581efc 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -173,7 +173,6 @@ enum ieee80211_bss_change { * @timestamp: beacon timestamp * @beacon_int: beacon interval * @assoc_capability: capabilities taken from assoc resp - * @ht: BSS's HT configuration * @basic_rates: bitmap of basic rates, each bit stands for an * index into the rate table configured by the driver in * the current band. diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index f53aa9dc6e97..49a1a1f76511 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -216,6 +216,7 @@ struct sta_ampdu_mlme { * @plink_state: peer link state * @plink_timeout: timeout of peer link * @plink_timer: peer link watch timer + * @plink_timer_was_running: used by suspend/resume to restore timers * @debugfs: debug filesystem info * @sta: station information we share with the driver */ -- cgit v1.2.3 From d1a277c584d0862dbf51991baea947ea5f2ce6bf Mon Sep 17 00:00:00 2001 From: Wolfgang Grandegger Date: Sat, 30 May 2009 07:55:50 +0000 Subject: can: sja1000: generic OF platform bus driver This patch adds a generic driver for SJA1000 chips on the OpenFirmware platform bus found on embedded PowerPC systems. You need a SJA1000 node definition in your flattened device tree source (DTS) file similar to: can@3,100 { compatible = "nxp,sja1000"; reg = <3 0x100 0x80>; interrupts = <2 0>; interrupt-parent = <&mpic>; nxp,external-clock-frequency = <16000000>; }; See also Documentation/powerpc/dts-bindings/can/sja1000.txt. CC: devicetree-discuss@ozlabs.org Signed-off-by: Wolfgang Grandegger Signed-off-by: David S. Miller --- Documentation/powerpc/dts-bindings/can/sja1000.txt | 53 +++++ drivers/net/can/Kconfig | 9 + drivers/net/can/sja1000/Makefile | 1 + drivers/net/can/sja1000/sja1000_of_platform.c | 233 +++++++++++++++++++++ include/linux/can/platform/sja1000.h | 3 + 5 files changed, 299 insertions(+) create mode 100644 Documentation/powerpc/dts-bindings/can/sja1000.txt create mode 100644 drivers/net/can/sja1000/sja1000_of_platform.c (limited to 'Documentation') diff --git a/Documentation/powerpc/dts-bindings/can/sja1000.txt b/Documentation/powerpc/dts-bindings/can/sja1000.txt new file mode 100644 index 000000000000..d6d209ded937 --- /dev/null +++ b/Documentation/powerpc/dts-bindings/can/sja1000.txt @@ -0,0 +1,53 @@ +Memory mapped SJA1000 CAN controller from NXP (formerly Philips) + +Required properties: + +- compatible : should be "nxp,sja1000". + +- reg : should specify the chip select, address offset and size required + to map the registers of the SJA1000. The size is usually 0x80. + +- interrupts: property with a value describing the interrupt source + (number and sensitivity) required for the SJA1000. + +Optional properties: + +- nxp,external-clock-frequency : Frequency of the external oscillator + clock in Hz. Note that the internal clock frequency used by the + SJA1000 is half of that value. If not specified, a default value + of 16000000 (16 MHz) is used. + +- nxp,tx-output-mode : operation mode of the TX output control logic: + <0x0> : bi-phase output mode + <0x1> : normal output mode (default) + <0x2> : test output mode + <0x3> : clock output mode + +- nxp,tx-output-config : TX output pin configuration: + <0x01> : TX0 invert + <0x02> : TX0 pull-down (default) + <0x04> : TX0 pull-up + <0x06> : TX0 push-pull + <0x08> : TX1 invert + <0x10> : TX1 pull-down + <0x20> : TX1 pull-up + <0x30> : TX1 push-pull + +- nxp,clock-out-frequency : clock frequency in Hz on the CLKOUT pin. + If not specified or if the specified value is 0, the CLKOUT pin + will be disabled. + +- nxp,no-comparator-bypass : Allows to disable the CAN input comperator. + +For futher information, please have a look to the SJA1000 data sheet. + +Examples: + +can@3,100 { + compatible = "nxp,sja1000"; + reg = <3 0x100 0x80>; + interrupts = <2 0>; + interrupt-parent = <&mpic>; + nxp,external-clock-frequency = <16000000>; +}; + diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index cfd6c5a285fa..d5e18812bf49 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -51,6 +51,15 @@ config CAN_SJA1000_PLATFORM boards from Phytec (http://www.phytec.de) like the PCM027, PCM038. +config CAN_SJA1000_OF_PLATFORM + depends on CAN_SJA1000 && PPC_OF + tristate "Generic OF Platform Bus based SJA1000 driver" + ---help--- + This driver adds support for the SJA1000 chips connected to + the OpenFirmware "platform bus" found on embedded systems with + OpenFirmware bindings, e.g. if you have a PowerPC based system + you may want to enable this option. + config CAN_EMS_PCI tristate "EMS CPC-PCI and CPC-PCIe Card" depends on PCI && CAN_SJA1000 diff --git a/drivers/net/can/sja1000/Makefile b/drivers/net/can/sja1000/Makefile index d6c631f9e665..9d0c08da273c 100644 --- a/drivers/net/can/sja1000/Makefile +++ b/drivers/net/can/sja1000/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_CAN_SJA1000) += sja1000.o obj-$(CONFIG_CAN_SJA1000_PLATFORM) += sja1000_platform.o +obj-$(CONFIG_CAN_SJA1000_OF_PLATFORM) += sja1000_of_platform.o obj-$(CONFIG_CAN_EMS_PCI) += ems_pci.o obj-$(CONFIG_CAN_KVASER_PCI) += kvaser_pci.o diff --git a/drivers/net/can/sja1000/sja1000_of_platform.c b/drivers/net/can/sja1000/sja1000_of_platform.c new file mode 100644 index 000000000000..aa953fb4b8d0 --- /dev/null +++ b/drivers/net/can/sja1000/sja1000_of_platform.c @@ -0,0 +1,233 @@ +/* + * Driver for SJA1000 CAN controllers on the OpenFirmware platform bus + * + * Copyright (C) 2008-2009 Wolfgang Grandegger + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the version 2 of the GNU General Public License + * as published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/* This is a generic driver for SJA1000 chips on the OpenFirmware platform + * bus found on embedded PowerPC systems. You need a SJA1000 CAN node + * definition in your flattened device tree source (DTS) file similar to: + * + * can@3,100 { + * compatible = "nxp,sja1000"; + * reg = <3 0x100 0x80>; + * interrupts = <2 0>; + * interrupt-parent = <&mpic>; + * nxp,external-clock-frequency = <16000000>; + * }; + * + * See "Documentation/powerpc/dts-bindings/can/sja1000.txt" for further + * information. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "sja1000.h" + +#define DRV_NAME "sja1000_of_platform" + +MODULE_AUTHOR("Wolfgang Grandegger "); +MODULE_DESCRIPTION("Socket-CAN driver for SJA1000 on the OF platform bus"); +MODULE_LICENSE("GPL v2"); + +#define SJA1000_OFP_CAN_CLOCK (16000000 / 2) + +#define SJA1000_OFP_OCR OCR_TX0_PULLDOWN +#define SJA1000_OFP_CDR (CDR_CBP | CDR_CLK_OFF) + +static u8 sja1000_ofp_read_reg(const struct sja1000_priv *priv, int reg) +{ + return in_8(priv->reg_base + reg); +} + +static void sja1000_ofp_write_reg(const struct sja1000_priv *priv, + int reg, u8 val) +{ + out_8(priv->reg_base + reg, val); +} + +static int __devexit sja1000_ofp_remove(struct of_device *ofdev) +{ + struct net_device *dev = dev_get_drvdata(&ofdev->dev); + struct sja1000_priv *priv = netdev_priv(dev); + struct device_node *np = ofdev->node; + struct resource res; + + dev_set_drvdata(&ofdev->dev, NULL); + + unregister_sja1000dev(dev); + free_sja1000dev(dev); + iounmap(priv->reg_base); + irq_dispose_mapping(dev->irq); + + of_address_to_resource(np, 0, &res); + release_mem_region(res.start, resource_size(&res)); + + return 0; +} + +static int __devinit sja1000_ofp_probe(struct of_device *ofdev, + const struct of_device_id *id) +{ + struct device_node *np = ofdev->node; + struct net_device *dev; + struct sja1000_priv *priv; + struct resource res; + const u32 *prop; + int err, irq, res_size, prop_size; + void __iomem *base; + + err = of_address_to_resource(np, 0, &res); + if (err) { + dev_err(&ofdev->dev, "invalid address\n"); + return err; + } + + res_size = resource_size(&res); + + if (!request_mem_region(res.start, res_size, DRV_NAME)) { + dev_err(&ofdev->dev, "couldn't request %#x..%#x\n", + res.start, res.end); + return -EBUSY; + } + + base = ioremap_nocache(res.start, res_size); + if (!base) { + dev_err(&ofdev->dev, "couldn't ioremap %#x..%#x\n", + res.start, res.end); + err = -ENOMEM; + goto exit_release_mem; + } + + irq = irq_of_parse_and_map(np, 0); + if (irq == NO_IRQ) { + dev_err(&ofdev->dev, "no irq found\n"); + err = -ENODEV; + goto exit_unmap_mem; + } + + dev = alloc_sja1000dev(0); + if (!dev) { + err = -ENOMEM; + goto exit_dispose_irq; + } + + priv = netdev_priv(dev); + + priv->read_reg = sja1000_ofp_read_reg; + priv->write_reg = sja1000_ofp_write_reg; + + prop = of_get_property(np, "nxp,external-clock-frequency", &prop_size); + if (prop && (prop_size == sizeof(u32))) + priv->can.clock.freq = *prop / 2; + else + priv->can.clock.freq = SJA1000_OFP_CAN_CLOCK; /* default */ + + prop = of_get_property(np, "nxp,tx-output-mode", &prop_size); + if (prop && (prop_size == sizeof(u32))) + priv->ocr |= *prop & OCR_MODE_MASK; + else + priv->ocr |= OCR_MODE_NORMAL; /* default */ + + prop = of_get_property(np, "nxp,tx-output-config", &prop_size); + if (prop && (prop_size == sizeof(u32))) + priv->ocr |= (*prop << OCR_TX_SHIFT) & OCR_TX_MASK; + else + priv->ocr |= OCR_TX0_PULLDOWN; /* default */ + + prop = of_get_property(np, "nxp,clock-out-frequency", &prop_size); + if (prop && (prop_size == sizeof(u32)) && *prop) { + u32 divider = priv->can.clock.freq * 2 / *prop; + + if (divider > 1) + priv->cdr |= divider / 2 - 1; + else + priv->cdr |= CDR_CLKOUT_MASK; + } else { + priv->cdr |= CDR_CLK_OFF; /* default */ + } + + prop = of_get_property(np, "nxp,no-comparator-bypass", NULL); + if (!prop) + priv->cdr |= CDR_CBP; /* default */ + + priv->irq_flags = IRQF_SHARED; + priv->reg_base = base; + + dev->irq = irq; + + dev_info(&ofdev->dev, + "reg_base=0x%p irq=%d clock=%d ocr=0x%02x cdr=0x%02x\n", + priv->reg_base, dev->irq, priv->can.clock.freq, + priv->ocr, priv->cdr); + + dev_set_drvdata(&ofdev->dev, dev); + SET_NETDEV_DEV(dev, &ofdev->dev); + + err = register_sja1000dev(dev); + if (err) { + dev_err(&ofdev->dev, "registering %s failed (err=%d)\n", + DRV_NAME, err); + goto exit_free_sja1000; + } + + return 0; + +exit_free_sja1000: + free_sja1000dev(dev); +exit_dispose_irq: + irq_dispose_mapping(irq); +exit_unmap_mem: + iounmap(base); +exit_release_mem: + release_mem_region(res.start, res_size); + + return err; +} + +static struct of_device_id __devinitdata sja1000_ofp_table[] = { + {.compatible = "nxp,sja1000"}, + {}, +}; + +static struct of_platform_driver sja1000_ofp_driver = { + .owner = THIS_MODULE, + .name = DRV_NAME, + .probe = sja1000_ofp_probe, + .remove = __devexit_p(sja1000_ofp_remove), + .match_table = sja1000_ofp_table, +}; + +static int __init sja1000_ofp_init(void) +{ + return of_register_platform_driver(&sja1000_ofp_driver); +} +module_init(sja1000_ofp_init); + +static void __exit sja1000_ofp_exit(void) +{ + return of_unregister_platform_driver(&sja1000_ofp_driver); +}; +module_exit(sja1000_ofp_exit); diff --git a/include/linux/can/platform/sja1000.h b/include/linux/can/platform/sja1000.h index 37966e630ff5..01ee2aeb048d 100644 --- a/include/linux/can/platform/sja1000.h +++ b/include/linux/can/platform/sja1000.h @@ -13,6 +13,7 @@ #define OCR_MODE_TEST 0x01 #define OCR_MODE_NORMAL 0x02 #define OCR_MODE_CLOCK 0x03 +#define OCR_MODE_MASK 0x07 #define OCR_TX0_INVERT 0x04 #define OCR_TX0_PULLDOWN 0x08 #define OCR_TX0_PULLUP 0x10 @@ -21,6 +22,8 @@ #define OCR_TX1_PULLDOWN 0x40 #define OCR_TX1_PULLUP 0x80 #define OCR_TX1_PUSHPULL 0xc0 +#define OCR_TX_MASK 0xfc +#define OCR_TX_SHIFT 2 struct sja1000_platform_data { u32 clock; /* CAN bus oscillator frequency in Hz */ -- cgit v1.2.3 From 56d417b12e57dfe11c9b7ba4bea3882c62a55815 Mon Sep 17 00:00:00 2001 From: Brian Haley Date: Mon, 1 Jun 2009 03:07:33 -0700 Subject: IPv6: Add 'autoconf' and 'disable_ipv6' module parameters Add 'autoconf' and 'disable_ipv6' parameters to the IPv6 module. The first controls if IPv6 addresses are autoconfigured from prefixes received in Router Advertisements. The IPv6 loopback (::1) and link-local addresses are still configured. The second controls if IPv6 addresses are desired at all. No IPv6 addresses will be added to any interfaces. Signed-off-by: Brian Haley Signed-off-by: David S. Miller --- Documentation/networking/ip-sysctl.txt | 7 +++ Documentation/networking/ipv6.txt | 37 +++++++++++++++ include/linux/ipv6.h | 6 +++ net/ipv6/addrconf.c | 83 ++++++++++++++++++++++++++++++++-- net/ipv6/af_inet6.c | 22 +++++++-- 5 files changed, 145 insertions(+), 10 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 3ffd233c369c..8be76235fe67 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -1057,6 +1057,13 @@ disable_ipv6 - BOOLEAN address. Default: FALSE (enable IPv6 operation) + When this value is changed from 1 to 0 (IPv6 is being enabled), + it will dynamically create a link-local address on the given + interface and start Duplicate Address Detection, if necessary. + + When this value is changed from 0 to 1 (IPv6 is being disabled), + it will dynamically delete all address on the given interface. + accept_dad - INTEGER Whether to accept DAD (Duplicate Address Detection). 0: Disable DAD diff --git a/Documentation/networking/ipv6.txt b/Documentation/networking/ipv6.txt index 268e5c103dd8..9fd7e21296c8 100644 --- a/Documentation/networking/ipv6.txt +++ b/Documentation/networking/ipv6.txt @@ -33,3 +33,40 @@ disable A reboot is required to enable IPv6. +autoconf + + Specifies whether to enable IPv6 address autoconfiguration + on all interfaces. This might be used when one does not wish + for addresses to be automatically generated from prefixes + received in Router Advertisements. + + The possible values and their effects are: + + 0 + IPv6 address autoconfiguration is disabled on all interfaces. + + Only the IPv6 loopback address (::1) and link-local addresses + will be added to interfaces. + + 1 + IPv6 address autoconfiguration is enabled on all interfaces. + + This is the default value. + +disable_ipv6 + + Specifies whether to disable IPv6 on all interfaces. + This might be used when no IPv6 addresses are desired. + + The possible values and their effects are: + + 0 + IPv6 is enabled on all interfaces. + + This is the default value. + + 1 + IPv6 is disabled on all interfaces. + + No IPv6 addresses will be added to interfaces. + diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 476d9464ac82..c662efa68289 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -169,6 +169,12 @@ struct ipv6_devconf { __s32 accept_dad; void *sysctl; }; + +struct ipv6_params { + __s32 disable_ipv6; + __s32 autoconf; +}; +extern struct ipv6_params ipv6_defaults; #endif /* index values for the variables in ipv6_devconf */ diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 31938e5fb220..c3488372f12d 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -591,7 +591,6 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen, { struct inet6_ifaddr *ifa = NULL; struct rt6_info *rt; - struct net *net = dev_net(idev->dev); int hash; int err = 0; int addr_type = ipv6_addr_type(addr); @@ -608,7 +607,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen, goto out2; } - if (idev->cnf.disable_ipv6 || net->ipv6.devconf_all->disable_ipv6) { + if (idev->cnf.disable_ipv6) { err = -EACCES; goto out2; } @@ -1752,6 +1751,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len) __u32 prefered_lft; int addr_type; struct inet6_dev *in6_dev; + struct net *net = dev_net(dev); pinfo = (struct prefix_info *) opt; @@ -1809,7 +1809,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len) if (addrconf_finite_timeout(rt_expires)) rt_expires *= HZ; - rt = rt6_lookup(dev_net(dev), &pinfo->prefix, NULL, + rt = rt6_lookup(net, &pinfo->prefix, NULL, dev->ifindex, 1); if (rt && addrconf_is_prefix_route(rt)) { @@ -1846,7 +1846,6 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len) struct inet6_ifaddr * ifp; struct in6_addr addr; int create = 0, update_lft = 0; - struct net *net = dev_net(dev); if (pinfo->prefix_len == 64) { memcpy(&addr, &pinfo->prefix, 8); @@ -3988,6 +3987,75 @@ static int addrconf_sysctl_forward_strategy(ctl_table *table, return addrconf_fixup_forwarding(table, valp, val); } +static void dev_disable_change(struct inet6_dev *idev) +{ + if (!idev || !idev->dev) + return; + + if (idev->cnf.disable_ipv6) + addrconf_notify(NULL, NETDEV_DOWN, idev->dev); + else + addrconf_notify(NULL, NETDEV_UP, idev->dev); +} + +static void addrconf_disable_change(struct net *net, __s32 newf) +{ + struct net_device *dev; + struct inet6_dev *idev; + + read_lock(&dev_base_lock); + for_each_netdev(net, dev) { + rcu_read_lock(); + idev = __in6_dev_get(dev); + if (idev) { + int changed = (!idev->cnf.disable_ipv6) ^ (!newf); + idev->cnf.disable_ipv6 = newf; + if (changed) + dev_disable_change(idev); + } + rcu_read_unlock(); + } + read_unlock(&dev_base_lock); +} + +static int addrconf_disable_ipv6(struct ctl_table *table, int *p, int old) +{ + struct net *net; + + net = (struct net *)table->extra2; + + if (p == &net->ipv6.devconf_dflt->disable_ipv6) + return 0; + + if (!rtnl_trylock()) + return restart_syscall(); + + if (p == &net->ipv6.devconf_all->disable_ipv6) { + __s32 newf = net->ipv6.devconf_all->disable_ipv6; + net->ipv6.devconf_dflt->disable_ipv6 = newf; + addrconf_disable_change(net, newf); + } else if ((!*p) ^ (!old)) + dev_disable_change((struct inet6_dev *)table->extra1); + + rtnl_unlock(); + return 0; +} + +static +int addrconf_sysctl_disable(ctl_table *ctl, int write, struct file * filp, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + int *valp = ctl->data; + int val = *valp; + int ret; + + ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); + + if (write) + ret = addrconf_disable_ipv6(ctl, valp, val); + return ret; +} + static struct addrconf_sysctl_table { struct ctl_table_header *sysctl_header; @@ -4225,7 +4293,8 @@ static struct addrconf_sysctl_table .data = &ipv6_devconf.disable_ipv6, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec, + .proc_handler = addrconf_sysctl_disable, + .strategy = sysctl_intvec, }, { .ctl_name = CTL_UNNUMBERED, @@ -4346,6 +4415,10 @@ static int addrconf_init_net(struct net *net) dflt = kmemdup(dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL); if (dflt == NULL) goto err_alloc_dflt; + } else { + /* these will be inherited by all namespaces */ + dflt->autoconf = ipv6_defaults.autoconf; + dflt->disable_ipv6 = ipv6_defaults.disable_ipv6; } net->ipv6.devconf_all = all; diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index b6215be0963f..85b3d0036afd 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -72,9 +72,21 @@ MODULE_LICENSE("GPL"); static struct list_head inetsw6[SOCK_MAX]; static DEFINE_SPINLOCK(inetsw6_lock); -static int disable_ipv6 = 0; -module_param_named(disable, disable_ipv6, int, 0); -MODULE_PARM_DESC(disable, "Disable IPv6 such that it is non-functional"); +struct ipv6_params ipv6_defaults = { + .disable_ipv6 = 0, + .autoconf = 1, +}; + +static int disable_ipv6_mod = 0; + +module_param_named(disable, disable_ipv6_mod, int, 0444); +MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); + +module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); +MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); + +module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); +MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) { @@ -1038,7 +1050,7 @@ static int __init inet6_init(void) for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) INIT_LIST_HEAD(r); - if (disable_ipv6) { + if (disable_ipv6_mod) { printk(KERN_INFO "IPv6: Loaded, but administratively disabled, " "reboot required to enable\n"); @@ -1227,7 +1239,7 @@ module_init(inet6_init); static void __exit inet6_exit(void) { - if (disable_ipv6) + if (disable_ipv6_mod) return; /* First of all disallow new sockets creation. */ -- cgit v1.2.3 From 19d337dff95cbf76edd3ad95c0cee2732c3e1ec5 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 2 Jun 2009 13:01:37 +0200 Subject: rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins Signed-off-by: Henrique de Moraes Holschuh [thinkpad] Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- Documentation/rfkill.txt | 597 +++---------------- MAINTAINERS | 6 +- arch/arm/mach-pxa/tosa-bt.c | 30 +- arch/arm/mach-pxa/tosa.c | 1 - drivers/net/usb/hso.c | 42 +- drivers/net/wireless/ath/ath9k/ath9k.h | 7 +- drivers/net/wireless/ath/ath9k/main.c | 115 +--- drivers/net/wireless/ath/ath9k/pci.c | 15 - drivers/net/wireless/b43/Kconfig | 2 +- drivers/net/wireless/b43/leds.c | 2 +- drivers/net/wireless/b43/main.c | 4 +- drivers/net/wireless/b43/phy_a.c | 4 +- drivers/net/wireless/b43/phy_common.c | 17 +- drivers/net/wireless/b43/phy_common.h | 4 +- drivers/net/wireless/b43/phy_g.c | 4 +- drivers/net/wireless/b43/phy_lp.c | 2 +- drivers/net/wireless/b43/phy_n.c | 2 +- drivers/net/wireless/b43/rfkill.c | 123 ++-- drivers/net/wireless/b43/rfkill.h | 5 +- drivers/net/wireless/b43legacy/Kconfig | 2 +- drivers/net/wireless/b43legacy/leds.c | 3 +- drivers/net/wireless/b43legacy/rfkill.c | 123 ++-- drivers/net/wireless/b43legacy/rfkill.h | 6 +- drivers/net/wireless/iwlwifi/Kconfig | 5 +- drivers/net/wireless/iwlwifi/iwl-rfkill.c | 69 +-- drivers/net/wireless/iwmc3200wifi/rfkill.c | 39 +- drivers/platform/x86/Kconfig | 14 +- drivers/platform/x86/acer-wmi.c | 50 +- drivers/platform/x86/dell-laptop.c | 101 ++-- drivers/platform/x86/eeepc-laptop.c | 99 +--- drivers/platform/x86/hp-wmi.c | 103 ++-- drivers/platform/x86/sony-laptop.c | 191 +++--- drivers/platform/x86/thinkpad_acpi.c | 873 ++++++++++++++-------------- drivers/platform/x86/toshiba_acpi.c | 159 ++--- include/linux/Kbuild | 1 + include/linux/rfkill.h | 325 ++++++++--- include/net/wimax.h | 8 +- net/rfkill/Kconfig | 21 +- net/rfkill/Makefile | 5 +- net/rfkill/core.c | 896 +++++++++++++++++++++++++++++ net/rfkill/input.c | 342 +++++++++++ net/rfkill/rfkill-input.c | 390 ------------- net/rfkill/rfkill-input.h | 21 - net/rfkill/rfkill.c | 855 --------------------------- net/rfkill/rfkill.h | 27 + net/wimax/Kconfig | 14 - net/wimax/op-rfkill.c | 123 +--- 47 files changed, 2555 insertions(+), 3292 deletions(-) create mode 100644 net/rfkill/core.c create mode 100644 net/rfkill/input.c delete mode 100644 net/rfkill/rfkill-input.c delete mode 100644 net/rfkill/rfkill-input.h delete mode 100644 net/rfkill/rfkill.c create mode 100644 net/rfkill/rfkill.h (limited to 'Documentation') diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt index 40c3a3f10816..de941e309d47 100644 --- a/Documentation/rfkill.txt +++ b/Documentation/rfkill.txt @@ -1,571 +1,130 @@ -rfkill - RF switch subsystem support -==================================== +rfkill - RF kill switch support +=============================== -1 Introduction -2 Implementation details -3 Kernel driver guidelines -3.1 wireless device drivers -3.2 platform/switch drivers -3.3 input device drivers -4 Kernel API -5 Userspace support +1. Introduction +2. Implementation details +3. Kernel driver guidelines +4. Kernel API +5. Userspace support -1. Introduction: +1. Introduction -The rfkill switch subsystem exists to add a generic interface to circuitry that -can enable or disable the signal output of a wireless *transmitter* of any -type. By far, the most common use is to disable radio-frequency transmitters. +The rfkill subsystem provides a generic interface to disabling any radio +transmitter in the system. When a transmitter is blocked, it shall not +radiate any power. -Note that disabling the signal output means that the the transmitter is to be -made to not emit any energy when "blocked". rfkill is not about blocking data -transmissions, it is about blocking energy emission. +The subsystem also provides the ability to react on button presses and +disable all transmitters of a certain type (or all). This is intended for +situations where transmitters need to be turned off, for example on +aircraft. -The rfkill subsystem offers support for keys and switches often found on -laptops to enable wireless devices like WiFi and Bluetooth, so that these keys -and switches actually perform an action in all wireless devices of a given type -attached to the system. -The buttons to enable and disable the wireless transmitters are important in -situations where the user is for example using his laptop on a location where -radio-frequency transmitters _must_ be disabled (e.g. airplanes). -Because of this requirement, userspace support for the keys should not be made -mandatory. Because userspace might want to perform some additional smarter -tasks when the key is pressed, rfkill provides userspace the possibility to -take over the task to handle the key events. - -=============================================================================== -2: Implementation details +2. Implementation details The rfkill subsystem is composed of various components: the rfkill class, the rfkill-input module (an input layer handler), and some specific input layer events. -The rfkill class provides kernel drivers with an interface that allows them to -know when they should enable or disable a wireless network device transmitter. -This is enabled by the CONFIG_RFKILL Kconfig option. - -The rfkill class support makes sure userspace will be notified of all state -changes on rfkill devices through uevents. It provides a notification chain -for interested parties in the kernel to also get notified of rfkill state -changes in other drivers. It creates several sysfs entries which can be used -by userspace. See section "Userspace support". - -The rfkill-input module provides the kernel with the ability to implement a -basic response when the user presses a key or button (or toggles a switch) -related to rfkill functionality. It is an in-kernel implementation of default -policy of reacting to rfkill-related input events and neither mandatory nor -required for wireless drivers to operate. It is enabled by the -CONFIG_RFKILL_INPUT Kconfig option. - -rfkill-input is a rfkill-related events input layer handler. This handler will -listen to all rfkill key events and will change the rfkill state of the -wireless devices accordingly. With this option enabled userspace could either -do nothing or simply perform monitoring tasks. - -The rfkill-input module also provides EPO (emergency power-off) functionality -for all wireless transmitters. This function cannot be overridden, and it is -always active. rfkill EPO is related to *_RFKILL_ALL input layer events. - - -Important terms for the rfkill subsystem: - -In order to avoid confusion, we avoid the term "switch" in rfkill when it is -referring to an electronic control circuit that enables or disables a -transmitter. We reserve it for the physical device a human manipulates -(which is an input device, by the way): - -rfkill switch: - - A physical device a human manipulates. Its state can be perceived by - the kernel either directly (through a GPIO pin, ACPI GPE) or by its - effect on a rfkill line of a wireless device. - -rfkill controller: - - A hardware circuit that controls the state of a rfkill line, which a - kernel driver can interact with *to modify* that state (i.e. it has - either write-only or read/write access). - -rfkill line: - - An input channel (hardware or software) of a wireless device, which - causes a wireless transmitter to stop emitting energy (BLOCK) when it - is active. Point of view is extremely important here: rfkill lines are - always seen from the PoV of a wireless device (and its driver). - -soft rfkill line/software rfkill line: - - A rfkill line the wireless device driver can directly change the state - of. Related to rfkill_state RFKILL_STATE_SOFT_BLOCKED. - -hard rfkill line/hardware rfkill line: - - A rfkill line that works fully in hardware or firmware, and that cannot - be overridden by the kernel driver. The hardware device or the - firmware just exports its status to the driver, but it is read-only. - Related to rfkill_state RFKILL_STATE_HARD_BLOCKED. - -The enum rfkill_state describes the rfkill state of a transmitter: - -When a rfkill line or rfkill controller is in the RFKILL_STATE_UNBLOCKED state, -the wireless transmitter (radio TX circuit for example) is *enabled*. When the -it is in the RFKILL_STATE_SOFT_BLOCKED or RFKILL_STATE_HARD_BLOCKED, the -wireless transmitter is to be *blocked* from operating. - -RFKILL_STATE_SOFT_BLOCKED indicates that a call to toggle_radio() can change -that state. RFKILL_STATE_HARD_BLOCKED indicates that a call to toggle_radio() -will not be able to change the state and will return with a suitable error if -attempts are made to set the state to RFKILL_STATE_UNBLOCKED. - -RFKILL_STATE_HARD_BLOCKED is used by drivers to signal that the device is -locked in the BLOCKED state by a hardwire rfkill line (typically an input pin -that, when active, forces the transmitter to be disabled) which the driver -CANNOT override. - -Full rfkill functionality requires two different subsystems to cooperate: the -input layer and the rfkill class. The input layer issues *commands* to the -entire system requesting that devices registered to the rfkill class change -state. The way this interaction happens is not complex, but it is not obvious -either: - -Kernel Input layer: - - * Generates KEY_WWAN, KEY_WLAN, KEY_BLUETOOTH, SW_RFKILL_ALL, and - other such events when the user presses certain keys, buttons, or - toggles certain physical switches. - - THE INPUT LAYER IS NEVER USED TO PROPAGATE STATUS, NOTIFICATIONS OR THE - KIND OF STUFF AN ON-SCREEN-DISPLAY APPLICATION WOULD REPORT. It is - used to issue *commands* for the system to change behaviour, and these - commands may or may not be carried out by some kernel driver or - userspace application. It follows that doing user feedback based only - on input events is broken, as there is no guarantee that an input event - will be acted upon. - - Most wireless communication device drivers implementing rfkill - functionality MUST NOT generate these events, and have no reason to - register themselves with the input layer. Doing otherwise is a common - misconception. There is an API to propagate rfkill status change - information, and it is NOT the input layer. - -rfkill class: - - * Calls a hook in a driver to effectively change the wireless - transmitter state; - * Keeps track of the wireless transmitter state (with help from - the driver); - * Generates userspace notifications (uevents) and a call to a - notification chain (kernel) when there is a wireless transmitter - state change; - * Connects a wireless communications driver with the common rfkill - control system, which, for example, allows actions such as - "switch all bluetooth devices offline" to be carried out by - userspace or by rfkill-input. - - THE RFKILL CLASS NEVER ISSUES INPUT EVENTS. THE RFKILL CLASS DOES - NOT LISTEN TO INPUT EVENTS. NO DRIVER USING THE RFKILL CLASS SHALL - EVER LISTEN TO, OR ACT ON RFKILL INPUT EVENTS. Doing otherwise is - a layering violation. - - Most wireless data communication drivers in the kernel have just to - implement the rfkill class API to work properly. Interfacing to the - input layer is not often required (and is very often a *bug*) on - wireless drivers. - - Platform drivers often have to attach to the input layer to *issue* - (but never to listen to) rfkill events for rfkill switches, and also to - the rfkill class to export a control interface for the platform rfkill - controllers to the rfkill subsystem. This does NOT mean the rfkill - switch is attached to a rfkill class (doing so is almost always wrong). - It just means the same kernel module is the driver for different - devices (rfkill switches and rfkill controllers). - - -Userspace input handlers (uevents) or kernel input handlers (rfkill-input): - - * Implements the policy of what should happen when one of the input - layer events related to rfkill operation is received. - * Uses the sysfs interface (userspace) or private rfkill API calls - to tell the devices registered with the rfkill class to change - their state (i.e. translates the input layer event into real - action). - - * rfkill-input implements EPO by handling EV_SW SW_RFKILL_ALL 0 - (power off all transmitters) in a special way: it ignores any - overrides and local state cache and forces all transmitters to the - RFKILL_STATE_SOFT_BLOCKED state (including those which are already - supposed to be BLOCKED). - * rfkill EPO will remain active until rfkill-input receives an - EV_SW SW_RFKILL_ALL 1 event. While the EPO is active, transmitters - are locked in the blocked state (rfkill will refuse to unblock them). - * rfkill-input implements different policies that the user can - select for handling EV_SW SW_RFKILL_ALL 1. It will unlock rfkill, - and either do nothing (leave transmitters blocked, but now unlocked), - restore the transmitters to their state before the EPO, or unblock - them all. - -Userspace uevent handler or kernel platform-specific drivers hooked to the -rfkill notifier chain: - - * Taps into the rfkill notifier chain or to KOBJ_CHANGE uevents, - in order to know when a device that is registered with the rfkill - class changes state; - * Issues feedback notifications to the user; - * In the rare platforms where this is required, synthesizes an input - event to command all *OTHER* rfkill devices to also change their - statues when a specific rfkill device changes state. - - -=============================================================================== -3: Kernel driver guidelines - -Remember: point-of-view is everything for a driver that connects to the rfkill -subsystem. All the details below must be measured/perceived from the point of -view of the specific driver being modified. - -The first thing one needs to know is whether his driver should be talking to -the rfkill class or to the input layer. In rare cases (platform drivers), it -could happen that you need to do both, as platform drivers often handle a -variety of devices in the same driver. - -Do not mistake input devices for rfkill controllers. The only type of "rfkill -switch" device that is to be registered with the rfkill class are those -directly controlling the circuits that cause a wireless transmitter to stop -working (or the software equivalent of them), i.e. what we call a rfkill -controller. Every other kind of "rfkill switch" is just an input device and -MUST NOT be registered with the rfkill class. - -A driver should register a device with the rfkill class when ALL of the -following conditions are met (they define a rfkill controller): - -1. The device is/controls a data communications wireless transmitter; - -2. The kernel can interact with the hardware/firmware to CHANGE the wireless - transmitter state (block/unblock TX operation); - -3. The transmitter can be made to not emit any energy when "blocked": - rfkill is not about blocking data transmissions, it is about blocking - energy emission; - -A driver should register a device with the input subsystem to issue -rfkill-related events (KEY_WLAN, KEY_BLUETOOTH, KEY_WWAN, KEY_WIMAX, -SW_RFKILL_ALL, etc) when ALL of the folowing conditions are met: - -1. It is directly related to some physical device the user interacts with, to - command the O.S./firmware/hardware to enable/disable a data communications - wireless transmitter. - - Examples of the physical device are: buttons, keys and switches the user - will press/touch/slide/switch to enable or disable the wireless - communication device. - -2. It is NOT slaved to another device, i.e. there is no other device that - issues rfkill-related input events in preference to this one. - - Please refer to the corner cases and examples section for more details. - -When in doubt, do not issue input events. For drivers that should generate -input events in some platforms, but not in others (e.g. b43), the best solution -is to NEVER generate input events in the first place. That work should be -deferred to a platform-specific kernel module (which will know when to generate -events through the rfkill notifier chain) or to userspace. This avoids the -usual maintenance problems with DMI whitelisting. - - -Corner cases and examples: -==================================== - -1. If the device is an input device that, because of hardware or firmware, -causes wireless transmitters to be blocked regardless of the kernel's will, it -is still just an input device, and NOT to be registered with the rfkill class. - -2. If the wireless transmitter switch control is read-only, it is an input -device and not to be registered with the rfkill class (and maybe not to be made -an input layer event source either, see below). - -3. If there is some other device driver *closer* to the actual hardware the -user interacted with (the button/switch/key) to issue an input event, THAT is -the device driver that should be issuing input events. - -E.g: - [RFKILL slider switch] -- [GPIO hardware] -- [WLAN card rf-kill input] - (platform driver) (wireless card driver) - -The user is closer to the RFKILL slide switch plaform driver, so the driver -which must issue input events is the platform driver looking at the GPIO -hardware, and NEVER the wireless card driver (which is just a slave). It is -very likely that there are other leaves than just the WLAN card rf-kill input -(e.g. a bluetooth card, etc)... - -On the other hand, some embedded devices do this: - - [RFKILL slider switch] -- [WLAN card rf-kill input] - (wireless card driver) - -In this situation, the wireless card driver *could* register itself as an input -device and issue rf-kill related input events... but in order to AVOID the need -for DMI whitelisting, the wireless card driver does NOT do it. Userspace (HAL) -or a platform driver (that exists only on these embedded devices) will do the -dirty job of issuing the input events. - - -COMMON MISTAKES in kernel drivers, related to rfkill: -==================================== - -1. NEVER confuse input device keys and buttons with input device switches. - - 1a. Switches are always set or reset. They report the current state - (on position or off position). - - 1b. Keys and buttons are either in the pressed or not-pressed state, and - that's it. A "button" that latches down when you press it, and - unlatches when you press it again is in fact a switch as far as input - devices go. - -Add the SW_* events you need for switches, do NOT try to emulate a button using -KEY_* events just because there is no such SW_* event yet. Do NOT try to use, -for example, KEY_BLUETOOTH when you should be using SW_BLUETOOTH instead. - -2. Input device switches (sources of EV_SW events) DO store their current state -(so you *must* initialize it by issuing a gratuitous input layer event on -driver start-up and also when resuming from sleep), and that state CAN be -queried from userspace through IOCTLs. There is no sysfs interface for this, -but that doesn't mean you should break things trying to hook it to the rfkill -class to get a sysfs interface :-) - -3. Do not issue *_RFKILL_ALL events by default, unless you are sure it is the -correct event for your switch/button. These events are emergency power-off -events when they are trying to turn the transmitters off. An example of an -input device which SHOULD generate *_RFKILL_ALL events is the wireless-kill -switch in a laptop which is NOT a hotkey, but a real sliding/rocker switch. -An example of an input device which SHOULD NOT generate *_RFKILL_ALL events by -default, is any sort of hot key that is type-specific (e.g. the one for WLAN). - - -3.1 Guidelines for wireless device drivers ------------------------------------------- - -(in this text, rfkill->foo means the foo field of struct rfkill). - -1. Each independent transmitter in a wireless device (usually there is only one -transmitter per device) should have a SINGLE rfkill class attached to it. - -2. If the device does not have any sort of hardware assistance to allow the -driver to rfkill the device, the driver should emulate it by taking all actions -required to silence the transmitter. - -3. If it is impossible to silence the transmitter (i.e. it still emits energy, -even if it is just in brief pulses, when there is no data to transmit and there -is no hardware support to turn it off) do NOT lie to the users. Do not attach -it to a rfkill class. The rfkill subsystem does not deal with data -transmission, it deals with energy emission. If the transmitter is emitting -energy, it is not blocked in rfkill terms. - -4. It doesn't matter if the device has multiple rfkill input lines affecting -the same transmitter, their combined state is to be exported as a single state -per transmitter (see rule 1). - -This rule exists because users of the rfkill subsystem expect to get (and set, -when possible) the overall transmitter rfkill state, not of a particular rfkill -line. +The rfkill class is provided for kernel drivers to register their radio +transmitter with the kernel, provide methods for turning it on and off and, +optionally, letting the system know about hardware-disabled states that may +be implemented on the device. This code is enabled with the CONFIG_RFKILL +Kconfig option, which drivers can "select". -5. The wireless device driver MUST NOT leave the transmitter enabled during -suspend and hibernation unless: +The rfkill class code also notifies userspace of state changes, this is +achieved via uevents. It also provides some sysfs files for userspace to +check the status of radio transmitters. See the "Userspace support" section +below. - 5.1. The transmitter has to be enabled for some sort of functionality - like wake-on-wireless-packet or autonomous packed forwarding in a mesh - network, and that functionality is enabled for this suspend/hibernation - cycle. -AND +The rfkill-input code implements a basic response to rfkill buttons -- it +implements turning on/off all devices of a certain class (or all). - 5.2. The device was not on a user-requested BLOCKED state before - the suspend (i.e. the driver must NOT unblock a device, not even - to support wake-on-wireless-packet or remain in the mesh). +When the device is hard-blocked (either by a call to rfkill_set_hw_state() +or from query_hw_block) set_block() will be invoked but drivers can well +ignore the method call since they can use the return value of the function +rfkill_set_hw_state() to sync the software state instead of keeping track +of calls to set_block(). -In other words, there is absolutely no allowed scenario where a driver can -automatically take action to unblock a rfkill controller (obviously, this deals -with scenarios where soft-blocking or both soft and hard blocking is happening. -Scenarios where hardware rfkill lines are the only ones blocking the -transmitter are outside of this rule, since the wireless device driver does not -control its input hardware rfkill lines in the first place). -6. During resume, rfkill will try to restore its previous state. +The entire functionality is spread over more than one subsystem: -7. After a rfkill class is suspended, it will *not* call rfkill->toggle_radio -until it is resumed. + * The kernel input layer generates KEY_WWAN, KEY_WLAN etc. and + SW_RFKILL_ALL -- when the user presses a button. Drivers for radio + transmitters generally do not register to the input layer, unless the + device really provides an input device (i.e. a button that has no + effect other than generating a button press event) + * The rfkill-input code hooks up to these events and switches the soft-block + of the various radio transmitters, depending on the button type. -Example of a WLAN wireless driver connected to the rfkill subsystem: --------------------------------------------------------------------- + * The rfkill drivers turn off/on their transmitters as requested. -A certain WLAN card has one input pin that causes it to block the transmitter -and makes the status of that input pin available (only for reading!) to the -kernel driver. This is a hard rfkill input line (it cannot be overridden by -the kernel driver). + * The rfkill class will generate userspace notifications (uevents) to tell + userspace what the current state is. -The card also has one PCI register that, if manipulated by the driver, causes -it to block the transmitter. This is a soft rfkill input line. -It has also a thermal protection circuitry that shuts down its transmitter if -the card overheats, and makes the status of that protection available (only for -reading!) to the kernel driver. This is also a hard rfkill input line. -If either one of these rfkill lines are active, the transmitter is blocked by -the hardware and forced offline. +3. Kernel driver guidelines -The driver should allocate and attach to its struct device *ONE* instance of -the rfkill class (there is only one transmitter). -It can implement the get_state() hook, and return RFKILL_STATE_HARD_BLOCKED if -either one of its two hard rfkill input lines are active. If the two hard -rfkill lines are inactive, it must return RFKILL_STATE_SOFT_BLOCKED if its soft -rfkill input line is active. Only if none of the rfkill input lines are -active, will it return RFKILL_STATE_UNBLOCKED. +Drivers for radio transmitters normally implement only the rfkill class. +These drivers may not unblock the transmitter based on own decisions, they +should act on information provided by the rfkill class only. -Since the device has a hardware rfkill line, it IS subject to state changes -external to rfkill. Therefore, the driver must make sure that it calls -rfkill_force_state() to keep the status always up-to-date, and it must do a -rfkill_force_state() on resume from sleep. +Platform drivers might implement input devices if the rfkill button is just +that, a button. If that button influences the hardware then you need to +implement an rfkill class instead. This also applies if the platform provides +a way to turn on/off the transmitter(s). -Every time the driver gets a notification from the card that one of its rfkill -lines changed state (polling might be needed on badly designed cards that don't -generate interrupts for such events), it recomputes the rfkill state as per -above, and calls rfkill_force_state() to update it. +During suspend/hibernation, transmitters should only be left enabled when +wake-on wlan or similar functionality requires it and the device wasn't +blocked before suspend/hibernate. Note that it may be necessary to update +the rfkill subsystem's idea of what the current state is at resume time if +the state may have changed over suspend. -The driver should implement the toggle_radio() hook, that: -1. Returns an error if one of the hardware rfkill lines are active, and the -caller asked for RFKILL_STATE_UNBLOCKED. -2. Activates the soft rfkill line if the caller asked for state -RFKILL_STATE_SOFT_BLOCKED. It should do this even if one of the hard rfkill -lines are active, effectively double-blocking the transmitter. - -3. Deactivates the soft rfkill line if none of the hardware rfkill lines are -active and the caller asked for RFKILL_STATE_UNBLOCKED. - -=============================================================================== -4: Kernel API +4. Kernel API To build a driver with rfkill subsystem support, the driver should depend on -(or select) the Kconfig symbol RFKILL; it should _not_ depend on RKFILL_INPUT. +(or select) the Kconfig symbol RFKILL. The hardware the driver talks to may be write-only (where the current state of the hardware is unknown), or read-write (where the hardware can be queried about its current state). -The rfkill class will call the get_state hook of a device every time it needs -to know the *real* current state of the hardware. This can happen often, but -it does not do any polling, so it is not enough on hardware that is subject -to state changes outside of the rfkill subsystem. - -Therefore, calling rfkill_force_state() when a state change happens is -mandatory when the device has a hardware rfkill line, or when something else -like the firmware could cause its state to be changed without going through the -rfkill class. - -Some hardware provides events when its status changes. In these cases, it is -best for the driver to not provide a get_state hook, and instead register the -rfkill class *already* with the correct status, and keep it updated using -rfkill_force_state() when it gets an event from the hardware. - -rfkill_force_state() must be used on the device resume handlers to update the -rfkill status, should there be any chance of the device status changing during -the sleep. - -There is no provision for a statically-allocated rfkill struct. You must -use rfkill_allocate() to allocate one. - -You should: - - rfkill_allocate() - - modify rfkill fields (flags, name) - - modify state to the current hardware state (THIS IS THE ONLY TIME - YOU CAN ACCESS state DIRECTLY) - - rfkill_register() +Calling rfkill_set_hw_state() when a state change happens is required from +rfkill drivers that control devices that can be hard-blocked unless they also +assign the poll_hw_block() callback (then the rfkill core will poll the +device). Don't do this unless you cannot get the event in any other way. -The only way to set a device to the RFKILL_STATE_HARD_BLOCKED state is through -a suitable return of get_state() or through rfkill_force_state(). -When a device is in the RFKILL_STATE_HARD_BLOCKED state, the only way to switch -it to a different state is through a suitable return of get_state() or through -rfkill_force_state(). -If toggle_radio() is called to set a device to state RFKILL_STATE_SOFT_BLOCKED -when that device is already at the RFKILL_STATE_HARD_BLOCKED state, it should -not return an error. Instead, it should try to double-block the transmitter, -so that its state will change from RFKILL_STATE_HARD_BLOCKED to -RFKILL_STATE_SOFT_BLOCKED should the hardware blocking cease. - -Please refer to the source for more documentation. - -=============================================================================== -5: Userspace support - -rfkill devices issue uevents (with an action of "change"), with the following -environment variables set: - -RFKILL_NAME -RFKILL_STATE -RFKILL_TYPE +5. Userspace support -The ABI for these variables is defined by the sysfs attributes. It is best -to take a quick look at the source to make sure of the possible values. - -It is expected that HAL will trap those, and bridge them to DBUS, etc. These -events CAN and SHOULD be used to give feedback to the user about the rfkill -status of the system. - -Input devices may issue events that are related to rfkill. These are the -various KEY_* events and SW_* events supported by rfkill-input.c. - -Userspace may not change the state of an rfkill switch in response to an -input event, it should refrain from changing states entirely. - -Userspace cannot assume it is the only source of control for rfkill switches. -Their state can change due to firmware actions, direct user actions, and the -rfkill-input EPO override for *_RFKILL_ALL. - -When rfkill-input is not active, userspace must initiate a rfkill status -change by writing to the "state" attribute in order for anything to happen. - -Take particular care to implement EV_SW SW_RFKILL_ALL properly. When that -switch is set to OFF, *every* rfkill device *MUST* be immediately put into the -RFKILL_STATE_SOFT_BLOCKED state, no questions asked. - -The following sysfs entries will be created: +The following sysfs entries exist for every rfkill device: name: Name assigned by driver to this key (interface or driver name). type: Name of the key type ("wlan", "bluetooth", etc). state: Current state of the transmitter 0: RFKILL_STATE_SOFT_BLOCKED - transmitter is forced off, but one can override it - by a write to the state attribute; + transmitter is turned off by software 1: RFKILL_STATE_UNBLOCKED - transmiter is NOT forced off, and may operate if - all other conditions for such operation are met - (such as interface is up and configured, etc); + transmiter is (potentially) active 2: RFKILL_STATE_HARD_BLOCKED transmitter is forced off by something outside of - the driver's control. One cannot set a device to - this state through writes to the state attribute; - claim: 1: Userspace handles events, 0: Kernel handles events - -Both the "state" and "claim" entries are also writable. For the "state" entry -this means that when 1 or 0 is written, the device rfkill state (if not yet in -the requested state), will be will be toggled accordingly. - -For the "claim" entry writing 1 to it means that the kernel no longer handles -key events even though RFKILL_INPUT input was enabled. When "claim" has been -set to 0, userspace should make sure that it listens for the input events or -check the sysfs "state" entry regularly to correctly perform the required tasks -when the rkfill key is pressed. - -A note about input devices and EV_SW events: - -In order to know the current state of an input device switch (like -SW_RFKILL_ALL), you will need to use an IOCTL. That information is not -available through sysfs in a generic way at this time, and it is not available -through the rfkill class AT ALL. + the driver's control. + claim: 0: Kernel handles events (currently always reads that value) + +rfkill devices also issue uevents (with an action of "change"), with the +following environment variables set: + +RFKILL_NAME +RFKILL_STATE +RFKILL_TYPE + +The contents of these variables corresponds to the "name", "state" and +"type" sysfs files explained above. diff --git a/MAINTAINERS b/MAINTAINERS index e18baa410b50..2f6a8fcfb1f2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4753,9 +4753,9 @@ S: Supported F: fs/reiserfs/ RFKILL -P: Ivo van Doorn -M: IvDoorn@gmail.com -L: netdev@vger.kernel.org +P: Johannes Berg +M: johannes@sipsolutions.net +L: linux-wireless@vger.kernel.org S: Maintained F Documentation/rfkill.txt F: net/rfkill/ diff --git a/arch/arm/mach-pxa/tosa-bt.c b/arch/arm/mach-pxa/tosa-bt.c index bde42aa29374..c31e601eb49c 100644 --- a/arch/arm/mach-pxa/tosa-bt.c +++ b/arch/arm/mach-pxa/tosa-bt.c @@ -35,21 +35,25 @@ static void tosa_bt_off(struct tosa_bt_data *data) gpio_set_value(data->gpio_reset, 0); } -static int tosa_bt_toggle_radio(void *data, enum rfkill_state state) +static int tosa_bt_set_block(void *data, bool blocked) { - pr_info("BT_RADIO going: %s\n", - state == RFKILL_STATE_UNBLOCKED ? "on" : "off"); + pr_info("BT_RADIO going: %s\n", blocked ? "off" : "on"); - if (state == RFKILL_STATE_UNBLOCKED) { + if (!blocked) { pr_info("TOSA_BT: going ON\n"); tosa_bt_on(data); } else { pr_info("TOSA_BT: going OFF\n"); tosa_bt_off(data); } + return 0; } +static const struct rfkill_ops tosa_bt_rfkill_ops = { + .set_block = tosa_bt_set_block, +}; + static int tosa_bt_probe(struct platform_device *dev) { int rc; @@ -70,18 +74,14 @@ static int tosa_bt_probe(struct platform_device *dev) if (rc) goto err_pwr_dir; - rfk = rfkill_allocate(&dev->dev, RFKILL_TYPE_BLUETOOTH); + rfk = rfkill_alloc("tosa-bt", &dev->dev, RFKILL_TYPE_BLUETOOTH, + &tosa_bt_rfkill_ops, data); if (!rfk) { rc = -ENOMEM; goto err_rfk_alloc; } - rfk->name = "tosa-bt"; - rfk->toggle_radio = tosa_bt_toggle_radio; - rfk->data = data; -#ifdef CONFIG_RFKILL_LEDS - rfk->led_trigger.name = "tosa-bt"; -#endif + rfkill_set_led_trigger_name(rfk, "tosa-bt"); rc = rfkill_register(rfk); if (rc) @@ -92,9 +92,7 @@ static int tosa_bt_probe(struct platform_device *dev) return 0; err_rfkill: - if (rfk) - rfkill_free(rfk); - rfk = NULL; + rfkill_destroy(rfk); err_rfk_alloc: tosa_bt_off(data); err_pwr_dir: @@ -113,8 +111,10 @@ static int __devexit tosa_bt_remove(struct platform_device *dev) platform_set_drvdata(dev, NULL); - if (rfk) + if (rfk) { rfkill_unregister(rfk); + rfkill_destroy(rfk); + } rfk = NULL; tosa_bt_off(data); diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c index afac5b6d3d78..58ce807fe440 100644 --- a/arch/arm/mach-pxa/tosa.c +++ b/arch/arm/mach-pxa/tosa.c @@ -31,7 +31,6 @@ #include #include #include -#include #include #include diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index 837135f0390a..5ddd8c4f9019 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -2481,10 +2481,10 @@ static int add_net_device(struct hso_device *hso_dev) return 0; } -static int hso_radio_toggle(void *data, enum rfkill_state state) +static int hso_rfkill_set_block(void *data, bool blocked) { struct hso_device *hso_dev = data; - int enabled = (state == RFKILL_STATE_UNBLOCKED); + int enabled = !blocked; int rv; mutex_lock(&hso_dev->mutex); @@ -2498,6 +2498,10 @@ static int hso_radio_toggle(void *data, enum rfkill_state state) return rv; } +static const struct rfkill_ops hso_rfkill_ops = { + .set_block = hso_rfkill_set_block, +}; + /* Creates and sets up everything for rfkill */ static void hso_create_rfkill(struct hso_device *hso_dev, struct usb_interface *interface) @@ -2506,29 +2510,25 @@ static void hso_create_rfkill(struct hso_device *hso_dev, struct device *dev = &hso_net->net->dev; char *rfkn; - hso_net->rfkill = rfkill_allocate(&interface_to_usbdev(interface)->dev, - RFKILL_TYPE_WWAN); - if (!hso_net->rfkill) { - dev_err(dev, "%s - Out of memory\n", __func__); - return; - } rfkn = kzalloc(20, GFP_KERNEL); - if (!rfkn) { - rfkill_free(hso_net->rfkill); - hso_net->rfkill = NULL; + if (!rfkn) dev_err(dev, "%s - Out of memory\n", __func__); - return; - } + snprintf(rfkn, 20, "hso-%d", interface->altsetting->desc.bInterfaceNumber); - hso_net->rfkill->name = rfkn; - hso_net->rfkill->state = RFKILL_STATE_UNBLOCKED; - hso_net->rfkill->data = hso_dev; - hso_net->rfkill->toggle_radio = hso_radio_toggle; + + hso_net->rfkill = rfkill_alloc(rfkn, + &interface_to_usbdev(interface)->dev, + RFKILL_TYPE_WWAN, + &hso_rfkill_ops, hso_dev); + if (!hso_net->rfkill) { + dev_err(dev, "%s - Out of memory\n", __func__); + kfree(rfkn); + return; + } if (rfkill_register(hso_net->rfkill) < 0) { + rfkill_destroy(hso_net->rfkill); kfree(rfkn); - hso_net->rfkill->name = NULL; - rfkill_free(hso_net->rfkill); hso_net->rfkill = NULL; dev_err(dev, "%s - Failed to register rfkill\n", __func__); return; @@ -3165,8 +3165,10 @@ static void hso_free_interface(struct usb_interface *interface) hso_stop_net_device(network_table[i]); cancel_work_sync(&network_table[i]->async_put_intf); cancel_work_sync(&network_table[i]->async_get_intf); - if (rfk) + if (rfk) { rfkill_unregister(rfk); + rfkill_destroy(rfk); + } hso_free_net_device(network_table[i]); } } diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 796a3adffea0..515880aa2116 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -460,12 +460,9 @@ struct ath_led { bool registered; }; -/* Rfkill */ -#define ATH_RFKILL_POLL_INTERVAL 2000 /* msecs */ - struct ath_rfkill { struct rfkill *rfkill; - struct delayed_work rfkill_poll; + struct rfkill_ops ops; char rfkill_name[32]; }; @@ -509,8 +506,6 @@ struct ath_rfkill { #define SC_OP_RXFLUSH BIT(7) #define SC_OP_LED_ASSOCIATED BIT(8) #define SC_OP_RFKILL_REGISTERED BIT(9) -#define SC_OP_RFKILL_SW_BLOCKED BIT(10) -#define SC_OP_RFKILL_HW_BLOCKED BIT(11) #define SC_OP_WAIT_FOR_BEACON BIT(12) #define SC_OP_LED_ON BIT(13) #define SC_OP_SCANNING BIT(14) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 61da08a1648c..f7baa406918b 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1192,120 +1192,69 @@ static bool ath_is_rfkill_set(struct ath_softc *sc) ah->rfkill_polarity; } -/* h/w rfkill poll function */ -static void ath_rfkill_poll(struct work_struct *work) +/* s/w rfkill handlers */ +static int ath_rfkill_set_block(void *data, bool blocked) { - struct ath_softc *sc = container_of(work, struct ath_softc, - rf_kill.rfkill_poll.work); - bool radio_on; - - if (sc->sc_flags & SC_OP_INVALID) - return; - - radio_on = !ath_is_rfkill_set(sc); - - /* - * enable/disable radio only when there is a - * state change in RF switch - */ - if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) { - enum rfkill_state state; - - if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) { - state = radio_on ? RFKILL_STATE_SOFT_BLOCKED - : RFKILL_STATE_HARD_BLOCKED; - } else if (radio_on) { - ath_radio_enable(sc); - state = RFKILL_STATE_UNBLOCKED; - } else { - ath_radio_disable(sc); - state = RFKILL_STATE_HARD_BLOCKED; - } - - if (state == RFKILL_STATE_HARD_BLOCKED) - sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED; - else - sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED; + struct ath_softc *sc = data; - rfkill_force_state(sc->rf_kill.rfkill, state); - } + if (blocked) + ath_radio_disable(sc); + else + ath_radio_enable(sc); - queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll, - msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL)); + return 0; } -/* s/w rfkill handler */ -static int ath_sw_toggle_radio(void *data, enum rfkill_state state) +static void ath_rfkill_poll_state(struct rfkill *rfkill, void *data) { struct ath_softc *sc = data; + bool blocked = !!ath_is_rfkill_set(sc); - switch (state) { - case RFKILL_STATE_SOFT_BLOCKED: - if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED | - SC_OP_RFKILL_SW_BLOCKED))) - ath_radio_disable(sc); - sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED; - return 0; - case RFKILL_STATE_UNBLOCKED: - if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) { - sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED; - if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) { - DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the" - "radio as it is disabled by h/w\n"); - return -EPERM; - } - ath_radio_enable(sc); - } - return 0; - default: - return -EINVAL; - } + if (rfkill_set_hw_state(rfkill, blocked)) + ath_radio_disable(sc); + else + ath_radio_enable(sc); } /* Init s/w rfkill */ static int ath_init_sw_rfkill(struct ath_softc *sc) { - sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy), - RFKILL_TYPE_WLAN); + sc->rf_kill.ops.set_block = ath_rfkill_set_block; + if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) + sc->rf_kill.ops.poll = ath_rfkill_poll_state; + + snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name), + "ath9k-%s::rfkill", wiphy_name(sc->hw->wiphy)); + + sc->rf_kill.rfkill = rfkill_alloc(sc->rf_kill.rfkill_name, + wiphy_dev(sc->hw->wiphy), + RFKILL_TYPE_WLAN, + &sc->rf_kill.ops, sc); if (!sc->rf_kill.rfkill) { DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n"); return -ENOMEM; } - snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name), - "ath9k-%s::rfkill", wiphy_name(sc->hw->wiphy)); - sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name; - sc->rf_kill.rfkill->data = sc; - sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio; - sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED; - return 0; } /* Deinitialize rfkill */ static void ath_deinit_rfkill(struct ath_softc *sc) { - if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) - cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); - if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) { rfkill_unregister(sc->rf_kill.rfkill); + rfkill_destroy(sc->rf_kill.rfkill); sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED; - sc->rf_kill.rfkill = NULL; } } static int ath_start_rfkill_poll(struct ath_softc *sc) { - if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) - queue_delayed_work(sc->hw->workqueue, - &sc->rf_kill.rfkill_poll, 0); - if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) { if (rfkill_register(sc->rf_kill.rfkill)) { DPRINTF(sc, ATH_DBG_FATAL, "Unable to register rfkill\n"); - rfkill_free(sc->rf_kill.rfkill); + rfkill_destroy(sc->rf_kill.rfkill); /* Deinitialize the device */ ath_cleanup(sc); @@ -1678,10 +1627,6 @@ int ath_attach(u16 devid, struct ath_softc *sc) goto error_attach; #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) - /* Initialze h/w Rfkill */ - if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) - INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll); - /* Initialize s/w rfkill */ error = ath_init_sw_rfkill(sc); if (error) @@ -2214,10 +2159,8 @@ static void ath9k_stop(struct ieee80211_hw *hw) } else sc->rx.rxlink = NULL; -#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) - if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) - cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); -#endif + rfkill_pause_polling(sc->rf_kill.rfkill); + /* disable HAL and put h/w to sleep */ ath9k_hw_disable(sc->sc_ah); ath9k_hw_configpcipowersave(sc->sc_ah, 1); diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c index 168411d322a2..ccdf20a2e9be 100644 --- a/drivers/net/wireless/ath/ath9k/pci.c +++ b/drivers/net/wireless/ath/ath9k/pci.c @@ -227,11 +227,6 @@ static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state) ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); -#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) - if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) - cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); -#endif - pci_save_state(pdev); pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot); @@ -256,16 +251,6 @@ static int ath_pci_resume(struct pci_dev *pdev) AR_GPIO_OUTPUT_MUX_AS_OUTPUT); ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); -#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) - /* - * check the h/w rfkill state on resume - * and start the rfkill poll timer - */ - if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) - queue_delayed_work(sc->hw->workqueue, - &sc->rf_kill.rfkill_poll, 0); -#endif - return 0; } diff --git a/drivers/net/wireless/b43/Kconfig b/drivers/net/wireless/b43/Kconfig index 21572e40b79d..07a99e3faf94 100644 --- a/drivers/net/wireless/b43/Kconfig +++ b/drivers/net/wireless/b43/Kconfig @@ -102,7 +102,7 @@ config B43_LEDS # if it's possible. config B43_RFKILL bool - depends on B43 && (RFKILL = y || RFKILL = B43) && RFKILL_INPUT && (INPUT_POLLDEV = y || INPUT_POLLDEV = B43) + depends on B43 && (RFKILL = y || RFKILL = B43) default y # This config option automatically enables b43 HW-RNG support, diff --git a/drivers/net/wireless/b43/leds.c b/drivers/net/wireless/b43/leds.c index 76f4c7bad8b8..9a498d3fc653 100644 --- a/drivers/net/wireless/b43/leds.c +++ b/drivers/net/wireless/b43/leds.c @@ -87,7 +87,7 @@ static void b43_led_brightness_set(struct led_classdev *led_dev, } static int b43_register_led(struct b43_wldev *dev, struct b43_led *led, - const char *name, char *default_trigger, + const char *name, const char *default_trigger, u8 led_index, bool activelow) { int err; diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index cb4a8712946a..1d3e40095ada 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -3470,7 +3470,7 @@ static int b43_op_config(struct ieee80211_hw *hw, u32 changed) if (!!conf->radio_enabled != phy->radio_on) { if (conf->radio_enabled) { - b43_software_rfkill(dev, RFKILL_STATE_UNBLOCKED); + b43_software_rfkill(dev, false); b43info(dev->wl, "Radio turned on by software\n"); if (!dev->radio_hw_enable) { b43info(dev->wl, "The hardware RF-kill button " @@ -3478,7 +3478,7 @@ static int b43_op_config(struct ieee80211_hw *hw, u32 changed) "Press the button to turn it on.\n"); } } else { - b43_software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED); + b43_software_rfkill(dev, true); b43info(dev->wl, "Radio turned off by software\n"); } } diff --git a/drivers/net/wireless/b43/phy_a.c b/drivers/net/wireless/b43/phy_a.c index c836c077d51d..816e028a2620 100644 --- a/drivers/net/wireless/b43/phy_a.c +++ b/drivers/net/wireless/b43/phy_a.c @@ -480,11 +480,11 @@ static bool b43_aphy_op_supports_hwpctl(struct b43_wldev *dev) } static void b43_aphy_op_software_rfkill(struct b43_wldev *dev, - enum rfkill_state state) + bool blocked) { struct b43_phy *phy = &dev->phy; - if (state == RFKILL_STATE_UNBLOCKED) { + if (!blocked) { if (phy->radio_on) return; b43_radio_write16(dev, 0x0004, 0x00C0); diff --git a/drivers/net/wireless/b43/phy_common.c b/drivers/net/wireless/b43/phy_common.c index e176b6e0d9cf..6d241622210e 100644 --- a/drivers/net/wireless/b43/phy_common.c +++ b/drivers/net/wireless/b43/phy_common.c @@ -84,7 +84,7 @@ int b43_phy_init(struct b43_wldev *dev) phy->channel = ops->get_default_chan(dev); - ops->software_rfkill(dev, RFKILL_STATE_UNBLOCKED); + ops->software_rfkill(dev, false); err = ops->init(dev); if (err) { b43err(dev->wl, "PHY init failed\n"); @@ -104,7 +104,7 @@ err_phy_exit: if (ops->exit) ops->exit(dev); err_block_rf: - ops->software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED); + ops->software_rfkill(dev, true); return err; } @@ -113,7 +113,7 @@ void b43_phy_exit(struct b43_wldev *dev) { const struct b43_phy_operations *ops = dev->phy.ops; - ops->software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED); + ops->software_rfkill(dev, true); if (ops->exit) ops->exit(dev); } @@ -295,18 +295,13 @@ err_restore_cookie: return err; } -void b43_software_rfkill(struct b43_wldev *dev, enum rfkill_state state) +void b43_software_rfkill(struct b43_wldev *dev, bool blocked) { struct b43_phy *phy = &dev->phy; - if (state == RFKILL_STATE_HARD_BLOCKED) { - /* We cannot hardware-block the device */ - state = RFKILL_STATE_SOFT_BLOCKED; - } - b43_mac_suspend(dev); - phy->ops->software_rfkill(dev, state); - phy->radio_on = (state == RFKILL_STATE_UNBLOCKED); + phy->ops->software_rfkill(dev, blocked); + phy->radio_on = !blocked; b43_mac_enable(dev); } diff --git a/drivers/net/wireless/b43/phy_common.h b/drivers/net/wireless/b43/phy_common.h index b2d99101947b..f4c2d79cbc89 100644 --- a/drivers/net/wireless/b43/phy_common.h +++ b/drivers/net/wireless/b43/phy_common.h @@ -159,7 +159,7 @@ struct b43_phy_operations { /* Radio */ bool (*supports_hwpctl)(struct b43_wldev *dev); - void (*software_rfkill)(struct b43_wldev *dev, enum rfkill_state state); + void (*software_rfkill)(struct b43_wldev *dev, bool blocked); void (*switch_analog)(struct b43_wldev *dev, bool on); int (*switch_channel)(struct b43_wldev *dev, unsigned int new_channel); unsigned int (*get_default_chan)(struct b43_wldev *dev); @@ -364,7 +364,7 @@ int b43_switch_channel(struct b43_wldev *dev, unsigned int new_channel); /** * b43_software_rfkill - Turn the radio ON or OFF in software. */ -void b43_software_rfkill(struct b43_wldev *dev, enum rfkill_state state); +void b43_software_rfkill(struct b43_wldev *dev, bool blocked); /** * b43_phy_txpower_check - Check TX power output. diff --git a/drivers/net/wireless/b43/phy_g.c b/drivers/net/wireless/b43/phy_g.c index e7b98f013b0f..5300232449f6 100644 --- a/drivers/net/wireless/b43/phy_g.c +++ b/drivers/net/wireless/b43/phy_g.c @@ -2592,7 +2592,7 @@ static bool b43_gphy_op_supports_hwpctl(struct b43_wldev *dev) } static void b43_gphy_op_software_rfkill(struct b43_wldev *dev, - enum rfkill_state state) + bool blocked) { struct b43_phy *phy = &dev->phy; struct b43_phy_g *gphy = phy->g; @@ -2600,7 +2600,7 @@ static void b43_gphy_op_software_rfkill(struct b43_wldev *dev, might_sleep(); - if (state == RFKILL_STATE_UNBLOCKED) { + if (!blocked) { /* Turn radio ON */ if (phy->radio_on) return; diff --git a/drivers/net/wireless/b43/phy_lp.c b/drivers/net/wireless/b43/phy_lp.c index 58e319d6b1ed..ea0d3a3a6a64 100644 --- a/drivers/net/wireless/b43/phy_lp.c +++ b/drivers/net/wireless/b43/phy_lp.c @@ -488,7 +488,7 @@ static void b43_lpphy_op_radio_write(struct b43_wldev *dev, u16 reg, u16 value) } static void b43_lpphy_op_software_rfkill(struct b43_wldev *dev, - enum rfkill_state state) + bool blocked) { //TODO } diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c index 8bcfda5f3f07..be7b5604947b 100644 --- a/drivers/net/wireless/b43/phy_n.c +++ b/drivers/net/wireless/b43/phy_n.c @@ -579,7 +579,7 @@ static void b43_nphy_op_radio_write(struct b43_wldev *dev, u16 reg, u16 value) } static void b43_nphy_op_software_rfkill(struct b43_wldev *dev, - enum rfkill_state state) + bool blocked) {//TODO } diff --git a/drivers/net/wireless/b43/rfkill.c b/drivers/net/wireless/b43/rfkill.c index 9e1d00bc24d3..96047843cd56 100644 --- a/drivers/net/wireless/b43/rfkill.c +++ b/drivers/net/wireless/b43/rfkill.c @@ -45,12 +45,11 @@ static bool b43_is_hw_radio_enabled(struct b43_wldev *dev) } /* The poll callback for the hardware button. */ -static void b43_rfkill_poll(struct input_polled_dev *poll_dev) +static void b43_rfkill_poll(struct rfkill *rfkill, void *data) { - struct b43_wldev *dev = poll_dev->private; + struct b43_wldev *dev = data; struct b43_wl *wl = dev->wl; bool enabled; - bool report_change = 0; mutex_lock(&wl->mutex); if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) { @@ -60,68 +59,55 @@ static void b43_rfkill_poll(struct input_polled_dev *poll_dev) enabled = b43_is_hw_radio_enabled(dev); if (unlikely(enabled != dev->radio_hw_enable)) { dev->radio_hw_enable = enabled; - report_change = 1; b43info(wl, "Radio hardware status changed to %s\n", enabled ? "ENABLED" : "DISABLED"); + enabled = !rfkill_set_hw_state(rfkill, !enabled); + if (enabled != dev->phy.radio_on) + b43_software_rfkill(dev, !enabled); } mutex_unlock(&wl->mutex); - - /* send the radio switch event to the system - note both a key press - * and a release are required */ - if (unlikely(report_change)) { - input_report_key(poll_dev->input, KEY_WLAN, 1); - input_report_key(poll_dev->input, KEY_WLAN, 0); - } } /* Called when the RFKILL toggled in software. */ -static int b43_rfkill_soft_toggle(void *data, enum rfkill_state state) +static int b43_rfkill_soft_set(void *data, bool blocked) { struct b43_wldev *dev = data; struct b43_wl *wl = dev->wl; - int err = -EBUSY; + int err = -EINVAL; - if (!wl->rfkill.registered) - return 0; + if (WARN_ON(!wl->rfkill.registered)) + return -EINVAL; mutex_lock(&wl->mutex); + if (b43_status(dev) < B43_STAT_INITIALIZED) goto out_unlock; + + if (!dev->radio_hw_enable) + goto out_unlock; + + if (!blocked != dev->phy.radio_on) + b43_software_rfkill(dev, blocked); err = 0; - switch (state) { - case RFKILL_STATE_UNBLOCKED: - if (!dev->radio_hw_enable) { - /* No luck. We can't toggle the hardware RF-kill - * button from software. */ - err = -EBUSY; - goto out_unlock; - } - if (!dev->phy.radio_on) - b43_software_rfkill(dev, state); - break; - case RFKILL_STATE_SOFT_BLOCKED: - if (dev->phy.radio_on) - b43_software_rfkill(dev, state); - break; - default: - b43warn(wl, "Received unexpected rfkill state %d.\n", state); - break; - } out_unlock: mutex_unlock(&wl->mutex); - return err; } -char *b43_rfkill_led_name(struct b43_wldev *dev) +const char *b43_rfkill_led_name(struct b43_wldev *dev) { struct b43_rfkill *rfk = &(dev->wl->rfkill); if (!rfk->registered) return NULL; - return rfkill_get_led_name(rfk->rfkill); + return rfkill_get_led_trigger_name(rfk->rfkill); } +static const struct rfkill_ops b43_rfkill_ops = { + .set_block = b43_rfkill_soft_set, + .poll = b43_rfkill_poll, +}; + void b43_rfkill_init(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; @@ -130,65 +116,26 @@ void b43_rfkill_init(struct b43_wldev *dev) rfk->registered = 0; - rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN); - if (!rfk->rfkill) - goto out_error; snprintf(rfk->name, sizeof(rfk->name), "b43-%s", wiphy_name(wl->hw->wiphy)); - rfk->rfkill->name = rfk->name; - rfk->rfkill->state = RFKILL_STATE_UNBLOCKED; - rfk->rfkill->data = dev; - rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle; - - rfk->poll_dev = input_allocate_polled_device(); - if (!rfk->poll_dev) { - rfkill_free(rfk->rfkill); - goto err_freed_rfk; - } - - rfk->poll_dev->private = dev; - rfk->poll_dev->poll = b43_rfkill_poll; - rfk->poll_dev->poll_interval = 1000; /* msecs */ - rfk->poll_dev->input->name = rfk->name; - rfk->poll_dev->input->id.bustype = BUS_HOST; - rfk->poll_dev->input->id.vendor = dev->dev->bus->boardinfo.vendor; - rfk->poll_dev->input->evbit[0] = BIT(EV_KEY); - set_bit(KEY_WLAN, rfk->poll_dev->input->keybit); + rfk->rfkill = rfkill_alloc(rfk->name, + dev->dev->dev, + RFKILL_TYPE_WLAN, + &b43_rfkill_ops, dev); + if (!rfk->rfkill) + goto out_error; err = rfkill_register(rfk->rfkill); if (err) - goto err_free_polldev; - -#ifdef CONFIG_RFKILL_INPUT_MODULE - /* B43 RF-kill isn't useful without the rfkill-input subsystem. - * Try to load the module. */ - err = request_module("rfkill-input"); - if (err) - b43warn(wl, "Failed to load the rfkill-input module. " - "The built-in radio LED will not work.\n"); -#endif /* CONFIG_RFKILL_INPUT */ - -#if !defined(CONFIG_RFKILL_INPUT) && !defined(CONFIG_RFKILL_INPUT_MODULE) - b43warn(wl, "The rfkill-input subsystem is not available. " - "The built-in radio LED will not work.\n"); -#endif - - err = input_register_polled_device(rfk->poll_dev); - if (err) - goto err_unreg_rfk; + goto err_free; rfk->registered = 1; return; -err_unreg_rfk: - rfkill_unregister(rfk->rfkill); -err_free_polldev: - input_free_polled_device(rfk->poll_dev); - rfk->poll_dev = NULL; -err_freed_rfk: - rfk->rfkill = NULL; -out_error: + err_free: + rfkill_destroy(rfk->rfkill); + out_error: rfk->registered = 0; b43warn(wl, "RF-kill button init failed\n"); } @@ -201,9 +148,7 @@ void b43_rfkill_exit(struct b43_wldev *dev) return; rfk->registered = 0; - input_unregister_polled_device(rfk->poll_dev); rfkill_unregister(rfk->rfkill); - input_free_polled_device(rfk->poll_dev); - rfk->poll_dev = NULL; + rfkill_destroy(rfk->rfkill); rfk->rfkill = NULL; } diff --git a/drivers/net/wireless/b43/rfkill.h b/drivers/net/wireless/b43/rfkill.h index adacf936d815..da497e01bbb1 100644 --- a/drivers/net/wireless/b43/rfkill.h +++ b/drivers/net/wireless/b43/rfkill.h @@ -7,14 +7,11 @@ struct b43_wldev; #ifdef CONFIG_B43_RFKILL #include -#include struct b43_rfkill { /* The RFKILL subsystem data structure */ struct rfkill *rfkill; - /* The poll device for the RFKILL input button */ - struct input_polled_dev *poll_dev; /* Did initialization succeed? Used for freeing. */ bool registered; /* The unique name of this rfkill switch */ @@ -26,7 +23,7 @@ struct b43_rfkill { void b43_rfkill_init(struct b43_wldev *dev); void b43_rfkill_exit(struct b43_wldev *dev); -char * b43_rfkill_led_name(struct b43_wldev *dev); +const char *b43_rfkill_led_name(struct b43_wldev *dev); #else /* CONFIG_B43_RFKILL */ diff --git a/drivers/net/wireless/b43legacy/Kconfig b/drivers/net/wireless/b43legacy/Kconfig index d4f628a74bbd..6893f439df70 100644 --- a/drivers/net/wireless/b43legacy/Kconfig +++ b/drivers/net/wireless/b43legacy/Kconfig @@ -47,7 +47,7 @@ config B43LEGACY_LEDS # if it's possible. config B43LEGACY_RFKILL bool - depends on B43LEGACY && (RFKILL = y || RFKILL = B43LEGACY) && RFKILL_INPUT && (INPUT_POLLDEV = y || INPUT_POLLDEV = B43LEGACY) + depends on B43LEGACY && (RFKILL = y || RFKILL = B43LEGACY) default y # This config option automatically enables b43 HW-RNG support, diff --git a/drivers/net/wireless/b43legacy/leds.c b/drivers/net/wireless/b43legacy/leds.c index 3ea55b18c700..538d3117594b 100644 --- a/drivers/net/wireless/b43legacy/leds.c +++ b/drivers/net/wireless/b43legacy/leds.c @@ -86,7 +86,8 @@ static void b43legacy_led_brightness_set(struct led_classdev *led_dev, static int b43legacy_register_led(struct b43legacy_wldev *dev, struct b43legacy_led *led, - const char *name, char *default_trigger, + const char *name, + const char *default_trigger, u8 led_index, bool activelow) { int err; diff --git a/drivers/net/wireless/b43legacy/rfkill.c b/drivers/net/wireless/b43legacy/rfkill.c index 4b0c7d27a51f..c6230a64505a 100644 --- a/drivers/net/wireless/b43legacy/rfkill.c +++ b/drivers/net/wireless/b43legacy/rfkill.c @@ -45,12 +45,11 @@ static bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev) } /* The poll callback for the hardware button. */ -static void b43legacy_rfkill_poll(struct input_polled_dev *poll_dev) +static void b43legacy_rfkill_poll(struct rfkill *rfkill, void *data) { - struct b43legacy_wldev *dev = poll_dev->private; + struct b43legacy_wldev *dev = data; struct b43legacy_wl *wl = dev->wl; bool enabled; - bool report_change = 0; mutex_lock(&wl->mutex); if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) { @@ -60,71 +59,64 @@ static void b43legacy_rfkill_poll(struct input_polled_dev *poll_dev) enabled = b43legacy_is_hw_radio_enabled(dev); if (unlikely(enabled != dev->radio_hw_enable)) { dev->radio_hw_enable = enabled; - report_change = 1; b43legacyinfo(wl, "Radio hardware status changed to %s\n", enabled ? "ENABLED" : "DISABLED"); + enabled = !rfkill_set_hw_state(rfkill, !enabled); + if (enabled != dev->phy.radio_on) { + if (enabled) + b43legacy_radio_turn_on(dev); + else + b43legacy_radio_turn_off(dev, 0); + } } mutex_unlock(&wl->mutex); - - /* send the radio switch event to the system - note both a key press - * and a release are required */ - if (unlikely(report_change)) { - input_report_key(poll_dev->input, KEY_WLAN, 1); - input_report_key(poll_dev->input, KEY_WLAN, 0); - } } /* Called when the RFKILL toggled in software. * This is called without locking. */ -static int b43legacy_rfkill_soft_toggle(void *data, enum rfkill_state state) +static int b43legacy_rfkill_soft_set(void *data, bool blocked) { struct b43legacy_wldev *dev = data; struct b43legacy_wl *wl = dev->wl; - int err = -EBUSY; + int ret = -EINVAL; if (!wl->rfkill.registered) - return 0; + return -EINVAL; mutex_lock(&wl->mutex); if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) goto out_unlock; - err = 0; - switch (state) { - case RFKILL_STATE_UNBLOCKED: - if (!dev->radio_hw_enable) { - /* No luck. We can't toggle the hardware RF-kill - * button from software. */ - err = -EBUSY; - goto out_unlock; - } - if (!dev->phy.radio_on) + + if (!dev->radio_hw_enable) + goto out_unlock; + + if (!blocked != dev->phy.radio_on) { + if (!blocked) b43legacy_radio_turn_on(dev); - break; - case RFKILL_STATE_SOFT_BLOCKED: - if (dev->phy.radio_on) + else b43legacy_radio_turn_off(dev, 0); - break; - default: - b43legacywarn(wl, "Received unexpected rfkill state %d.\n", - state); - break; } + ret = 0; out_unlock: mutex_unlock(&wl->mutex); - - return err; + return ret; } -char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev) +const char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev) { struct b43legacy_rfkill *rfk = &(dev->wl->rfkill); if (!rfk->registered) return NULL; - return rfkill_get_led_name(rfk->rfkill); + return rfkill_get_led_trigger_name(rfk->rfkill); } +static const struct rfkill_ops b43legacy_rfkill_ops = { + .set_block = b43legacy_rfkill_soft_set, + .poll = b43legacy_rfkill_poll, +}; + void b43legacy_rfkill_init(struct b43legacy_wldev *dev) { struct b43legacy_wl *wl = dev->wl; @@ -133,60 +125,25 @@ void b43legacy_rfkill_init(struct b43legacy_wldev *dev) rfk->registered = 0; - rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN); - if (!rfk->rfkill) - goto out_error; snprintf(rfk->name, sizeof(rfk->name), "b43legacy-%s", wiphy_name(wl->hw->wiphy)); - rfk->rfkill->name = rfk->name; - rfk->rfkill->state = RFKILL_STATE_UNBLOCKED; - rfk->rfkill->data = dev; - rfk->rfkill->toggle_radio = b43legacy_rfkill_soft_toggle; - - rfk->poll_dev = input_allocate_polled_device(); - if (!rfk->poll_dev) { - rfkill_free(rfk->rfkill); - goto err_freed_rfk; - } - - rfk->poll_dev->private = dev; - rfk->poll_dev->poll = b43legacy_rfkill_poll; - rfk->poll_dev->poll_interval = 1000; /* msecs */ - - rfk->poll_dev->input->name = rfk->name; - rfk->poll_dev->input->id.bustype = BUS_HOST; - rfk->poll_dev->input->id.vendor = dev->dev->bus->boardinfo.vendor; - rfk->poll_dev->input->evbit[0] = BIT(EV_KEY); - set_bit(KEY_WLAN, rfk->poll_dev->input->keybit); + rfk->rfkill = rfkill_alloc(rfk->name, + dev->dev->dev, + RFKILL_TYPE_WLAN, + &b43legacy_rfkill_ops, dev); + if (!rfk->rfkill) + goto out_error; err = rfkill_register(rfk->rfkill); if (err) - goto err_free_polldev; - -#ifdef CONFIG_RFKILL_INPUT_MODULE - /* B43legacy RF-kill isn't useful without the rfkill-input subsystem. - * Try to load the module. */ - err = request_module("rfkill-input"); - if (err) - b43legacywarn(wl, "Failed to load the rfkill-input module." - "The built-in radio LED will not work.\n"); -#endif /* CONFIG_RFKILL_INPUT */ - - err = input_register_polled_device(rfk->poll_dev); - if (err) - goto err_unreg_rfk; + goto err_free; rfk->registered = 1; return; -err_unreg_rfk: - rfkill_unregister(rfk->rfkill); -err_free_polldev: - input_free_polled_device(rfk->poll_dev); - rfk->poll_dev = NULL; -err_freed_rfk: - rfk->rfkill = NULL; -out_error: + err_free: + rfkill_destroy(rfk->rfkill); + out_error: rfk->registered = 0; b43legacywarn(wl, "RF-kill button init failed\n"); } @@ -199,10 +156,8 @@ void b43legacy_rfkill_exit(struct b43legacy_wldev *dev) return; rfk->registered = 0; - input_unregister_polled_device(rfk->poll_dev); rfkill_unregister(rfk->rfkill); - input_free_polled_device(rfk->poll_dev); - rfk->poll_dev = NULL; + rfkill_destroy(rfk->rfkill); rfk->rfkill = NULL; } diff --git a/drivers/net/wireless/b43legacy/rfkill.h b/drivers/net/wireless/b43legacy/rfkill.h index 11150a8032f0..adffc503a6a1 100644 --- a/drivers/net/wireless/b43legacy/rfkill.h +++ b/drivers/net/wireless/b43legacy/rfkill.h @@ -6,16 +6,12 @@ struct b43legacy_wldev; #ifdef CONFIG_B43LEGACY_RFKILL #include -#include -#include struct b43legacy_rfkill { /* The RFKILL subsystem data structure */ struct rfkill *rfkill; - /* The poll device for the RFKILL input button */ - struct input_polled_dev *poll_dev; /* Did initialization succeed? Used for freeing. */ bool registered; /* The unique name of this rfkill switch */ @@ -27,7 +23,7 @@ struct b43legacy_rfkill { void b43legacy_rfkill_init(struct b43legacy_wldev *dev); void b43legacy_rfkill_exit(struct b43legacy_wldev *dev); -char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev); +const char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev); #else /* CONFIG_B43LEGACY_RFKILL */ diff --git a/drivers/net/wireless/iwlwifi/Kconfig b/drivers/net/wireless/iwlwifi/Kconfig index 8304f6406a17..6fe259fcfb8f 100644 --- a/drivers/net/wireless/iwlwifi/Kconfig +++ b/drivers/net/wireless/iwlwifi/Kconfig @@ -5,15 +5,14 @@ config IWLWIFI select FW_LOADER select MAC80211_LEDS if IWLWIFI_LEDS select LEDS_CLASS if IWLWIFI_LEDS - select RFKILL if IWLWIFI_RFKILL config IWLWIFI_LEDS bool "Enable LED support in iwlagn and iwl3945 drivers" depends on IWLWIFI config IWLWIFI_RFKILL - bool "Enable RF kill support in iwlagn and iwl3945 drivers" - depends on IWLWIFI + def_bool y + depends on IWLWIFI && RFKILL config IWLWIFI_SPECTRUM_MEASUREMENT bool "Enable Spectrum Measurement in iwlagn driver" diff --git a/drivers/net/wireless/iwlwifi/iwl-rfkill.c b/drivers/net/wireless/iwlwifi/iwl-rfkill.c index 65605ad44e4b..13149936fd26 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rfkill.c +++ b/drivers/net/wireless/iwlwifi/iwl-rfkill.c @@ -36,42 +36,37 @@ #include "iwl-core.h" /* software rf-kill from user */ -static int iwl_rfkill_soft_rf_kill(void *data, enum rfkill_state state) +static int iwl_rfkill_soft_rf_kill(void *data, bool blocked) { struct iwl_priv *priv = data; - int err = 0; if (!priv->rfkill) - return 0; + return -EINVAL; if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return 0; - IWL_DEBUG_RF_KILL(priv, "we received soft RFKILL set to state %d\n", state); + IWL_DEBUG_RF_KILL(priv, "received soft RFKILL: block=%d\n", blocked); + mutex_lock(&priv->mutex); - switch (state) { - case RFKILL_STATE_UNBLOCKED: - if (iwl_is_rfkill_hw(priv)) { - err = -EBUSY; - goto out_unlock; - } + if (iwl_is_rfkill_hw(priv)) + goto out_unlock; + + if (!blocked) iwl_radio_kill_sw_enable_radio(priv); - break; - case RFKILL_STATE_SOFT_BLOCKED: + else iwl_radio_kill_sw_disable_radio(priv); - break; - default: - IWL_WARN(priv, "we received unexpected RFKILL state %d\n", - state); - break; - } + out_unlock: mutex_unlock(&priv->mutex); - - return err; + return 0; } +static const struct rfkill_ops iwl_rfkill_ops = { + .set_block = iwl_rfkill_soft_rf_kill, +}; + int iwl_rfkill_init(struct iwl_priv *priv) { struct device *device = wiphy_dev(priv->hw->wiphy); @@ -80,21 +75,16 @@ int iwl_rfkill_init(struct iwl_priv *priv) BUG_ON(device == NULL); IWL_DEBUG_RF_KILL(priv, "Initializing RFKILL.\n"); - priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN); + priv->rfkill = rfkill_alloc(priv->cfg->name, + device, + RFKILL_TYPE_WLAN, + &iwl_rfkill_ops, priv); if (!priv->rfkill) { IWL_ERR(priv, "Unable to allocate RFKILL device.\n"); ret = -ENOMEM; goto error; } - priv->rfkill->name = priv->cfg->name; - priv->rfkill->data = priv; - priv->rfkill->state = RFKILL_STATE_UNBLOCKED; - priv->rfkill->toggle_radio = iwl_rfkill_soft_rf_kill; - - priv->rfkill->dev.class->suspend = NULL; - priv->rfkill->dev.class->resume = NULL; - ret = rfkill_register(priv->rfkill); if (ret) { IWL_ERR(priv, "Unable to register RFKILL: %d\n", ret); @@ -102,11 +92,10 @@ int iwl_rfkill_init(struct iwl_priv *priv) } IWL_DEBUG_RF_KILL(priv, "RFKILL initialization complete.\n"); - return ret; + return 0; free_rfkill: - if (priv->rfkill != NULL) - rfkill_free(priv->rfkill); + rfkill_destroy(priv->rfkill); priv->rfkill = NULL; error: @@ -118,8 +107,10 @@ EXPORT_SYMBOL(iwl_rfkill_init); void iwl_rfkill_unregister(struct iwl_priv *priv) { - if (priv->rfkill) + if (priv->rfkill) { rfkill_unregister(priv->rfkill); + rfkill_destroy(priv->rfkill); + } priv->rfkill = NULL; } @@ -131,14 +122,10 @@ void iwl_rfkill_set_hw_state(struct iwl_priv *priv) if (!priv->rfkill) return; - if (iwl_is_rfkill_hw(priv)) { - rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED); - return; - } - - if (!iwl_is_rfkill_sw(priv)) - rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED); + if (rfkill_set_hw_state(priv->rfkill, + !!iwl_is_rfkill_hw(priv))) + iwl_radio_kill_sw_disable_radio(priv); else - rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED); + iwl_radio_kill_sw_enable_radio(priv); } EXPORT_SYMBOL(iwl_rfkill_set_hw_state); diff --git a/drivers/net/wireless/iwmc3200wifi/rfkill.c b/drivers/net/wireless/iwmc3200wifi/rfkill.c index 4ca8b495f82d..8ee2c3c09a02 100644 --- a/drivers/net/wireless/iwmc3200wifi/rfkill.c +++ b/drivers/net/wireless/iwmc3200wifi/rfkill.c @@ -25,47 +25,42 @@ #include "iwm.h" -static int iwm_rfkill_soft_toggle(void *data, enum rfkill_state state) +static int iwm_rfkill_set_block(void *data, bool blocked) { struct iwm_priv *iwm = data; - switch (state) { - case RFKILL_STATE_UNBLOCKED: + if (!blocked) { if (test_bit(IWM_RADIO_RFKILL_HW, &iwm->radio)) return -EBUSY; if (test_and_clear_bit(IWM_RADIO_RFKILL_SW, &iwm->radio) && (iwm_to_ndev(iwm)->flags & IFF_UP)) - iwm_up(iwm); - - break; - case RFKILL_STATE_SOFT_BLOCKED: + return iwm_up(iwm); + } else { if (!test_and_set_bit(IWM_RADIO_RFKILL_SW, &iwm->radio)) - iwm_down(iwm); - - break; - default: - break; + return iwm_down(iwm); } return 0; } +static const struct rfkill_ops iwm_rfkill_ops = { + .set_block = iwm_rfkill_set_block, +}; + int iwm_rfkill_init(struct iwm_priv *iwm) { int ret; - iwm->rfkill = rfkill_allocate(iwm_to_dev(iwm), RFKILL_TYPE_WLAN); + iwm->rfkill = rfkill_alloc(KBUILD_MODNAME, + iwm_to_dev(iwm), + RFKILL_TYPE_WLAN, + &iwm_rfkill_ops, iwm); if (!iwm->rfkill) { IWM_ERR(iwm, "Unable to allocate rfkill device\n"); return -ENOMEM; } - iwm->rfkill->name = KBUILD_MODNAME; - iwm->rfkill->data = iwm; - iwm->rfkill->state = RFKILL_STATE_UNBLOCKED; - iwm->rfkill->toggle_radio = iwm_rfkill_soft_toggle; - ret = rfkill_register(iwm->rfkill); if (ret) { IWM_ERR(iwm, "Failed to register rfkill device\n"); @@ -74,15 +69,15 @@ int iwm_rfkill_init(struct iwm_priv *iwm) return 0; fail: - rfkill_free(iwm->rfkill); + rfkill_destroy(iwm->rfkill); return ret; } void iwm_rfkill_exit(struct iwm_priv *iwm) { - if (iwm->rfkill) + if (iwm->rfkill) { rfkill_unregister(iwm->rfkill); - - rfkill_free(iwm->rfkill); + rfkill_destroy(iwm->rfkill); + } iwm->rfkill = NULL; } diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 284ebaca6e45..c682ac536415 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -21,7 +21,7 @@ config ACER_WMI depends on NEW_LEDS depends on BACKLIGHT_CLASS_DEVICE depends on SERIO_I8042 - depends on RFKILL + depends on RFKILL || RFKILL = n select ACPI_WMI ---help--- This is a driver for newer Acer (and Wistron) laptops. It adds @@ -60,7 +60,7 @@ config DELL_LAPTOP depends on DCDBAS depends on EXPERIMENTAL depends on BACKLIGHT_CLASS_DEVICE - depends on RFKILL + depends on RFKILL || RFKILL = n depends on POWER_SUPPLY default n ---help--- @@ -117,7 +117,7 @@ config HP_WMI tristate "HP WMI extras" depends on ACPI_WMI depends on INPUT - depends on RFKILL + depends on RFKILL || RFKILL = n help Say Y here if you want to support WMI-based hotkeys on HP laptops and to read data from WMI such as docking or ambient light sensor state. @@ -196,14 +196,13 @@ config THINKPAD_ACPI tristate "ThinkPad ACPI Laptop Extras" depends on ACPI depends on INPUT + depends on RFKILL || RFKILL = n select BACKLIGHT_LCD_SUPPORT select BACKLIGHT_CLASS_DEVICE select HWMON select NVRAM select NEW_LEDS select LEDS_CLASS - select NET - select RFKILL ---help--- This is a driver for the IBM and Lenovo ThinkPad laptops. It adds support for Fn-Fx key combinations, Bluetooth control, video @@ -338,9 +337,9 @@ config EEEPC_LAPTOP depends on ACPI depends on INPUT depends on EXPERIMENTAL + depends on RFKILL || RFKILL = n select BACKLIGHT_CLASS_DEVICE select HWMON - select RFKILL ---help--- This driver supports the Fn-Fx keys on Eee PC laptops. It also adds the ability to switch camera/wlan on/off. @@ -405,9 +404,8 @@ config ACPI_TOSHIBA tristate "Toshiba Laptop Extras" depends on ACPI depends on INPUT + depends on RFKILL || RFKILL = n select INPUT_POLLDEV - select NET - select RFKILL select BACKLIGHT_CLASS_DEVICE ---help--- This driver adds support for access to certain system settings diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index 62d02b3c998e..b618fa51db2d 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -958,58 +958,50 @@ static void acer_rfkill_update(struct work_struct *ignored) status = get_u32(&state, ACER_CAP_WIRELESS); if (ACPI_SUCCESS(status)) - rfkill_force_state(wireless_rfkill, state ? - RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED); + rfkill_set_sw_state(wireless_rfkill, !!state); if (has_cap(ACER_CAP_BLUETOOTH)) { status = get_u32(&state, ACER_CAP_BLUETOOTH); if (ACPI_SUCCESS(status)) - rfkill_force_state(bluetooth_rfkill, state ? - RFKILL_STATE_UNBLOCKED : - RFKILL_STATE_SOFT_BLOCKED); + rfkill_set_sw_state(bluetooth_rfkill, !!state); } schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); } -static int acer_rfkill_set(void *data, enum rfkill_state state) +static int acer_rfkill_set(void *data, bool blocked) { acpi_status status; - u32 *cap = data; - status = set_u32((u32) (state == RFKILL_STATE_UNBLOCKED), *cap); + u32 cap = (unsigned long)data; + status = set_u32(!!blocked, cap); if (ACPI_FAILURE(status)) return -ENODEV; return 0; } -static struct rfkill * acer_rfkill_register(struct device *dev, -enum rfkill_type type, char *name, u32 cap) +static const struct rfkill_ops acer_rfkill_ops = { + .set_block = acer_rfkill_set, +}; + +static struct rfkill *acer_rfkill_register(struct device *dev, + enum rfkill_type type, + char *name, u32 cap) { int err; u32 state; - u32 *data; struct rfkill *rfkill_dev; - rfkill_dev = rfkill_allocate(dev, type); + rfkill_dev = rfkill_alloc(name, dev, type, + &acer_rfkill_ops, + (void *)(unsigned long)cap); if (!rfkill_dev) return ERR_PTR(-ENOMEM); - rfkill_dev->name = name; get_u32(&state, cap); - rfkill_dev->state = state ? RFKILL_STATE_UNBLOCKED : - RFKILL_STATE_SOFT_BLOCKED; - data = kzalloc(sizeof(u32), GFP_KERNEL); - if (!data) { - rfkill_free(rfkill_dev); - return ERR_PTR(-ENOMEM); - } - *data = cap; - rfkill_dev->data = data; - rfkill_dev->toggle_radio = acer_rfkill_set; + rfkill_set_sw_state(rfkill_dev, !state); err = rfkill_register(rfkill_dev); if (err) { - kfree(rfkill_dev->data); - rfkill_free(rfkill_dev); + rfkill_destroy(rfkill_dev); return ERR_PTR(err); } return rfkill_dev; @@ -1027,8 +1019,8 @@ static int acer_rfkill_init(struct device *dev) RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", ACER_CAP_BLUETOOTH); if (IS_ERR(bluetooth_rfkill)) { - kfree(wireless_rfkill->data); rfkill_unregister(wireless_rfkill); + rfkill_destroy(wireless_rfkill); return PTR_ERR(bluetooth_rfkill); } } @@ -1041,11 +1033,13 @@ static int acer_rfkill_init(struct device *dev) static void acer_rfkill_exit(void) { cancel_delayed_work_sync(&acer_rfkill_work); - kfree(wireless_rfkill->data); + rfkill_unregister(wireless_rfkill); + rfkill_destroy(wireless_rfkill); + if (has_cap(ACER_CAP_BLUETOOTH)) { - kfree(bluetooth_rfkill->data); rfkill_unregister(bluetooth_rfkill); + rfkill_destroy(bluetooth_rfkill); } return; } diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index af9f43021172..2faf0e14f05a 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -174,10 +174,11 @@ dell_send_request(struct calling_interface_buffer *buffer, int class, result[3]: NVRAM format version number */ -static int dell_rfkill_set(int radio, enum rfkill_state state) +static int dell_rfkill_set(void *data, bool blocked) { struct calling_interface_buffer buffer; - int disable = (state == RFKILL_STATE_UNBLOCKED) ? 0 : 1; + int disable = blocked ? 0 : 1; + unsigned long radio = (unsigned long)data; memset(&buffer, 0, sizeof(struct calling_interface_buffer)); buffer.input[0] = (1 | (radio<<8) | (disable << 16)); @@ -186,56 +187,24 @@ static int dell_rfkill_set(int radio, enum rfkill_state state) return 0; } -static int dell_wifi_set(void *data, enum rfkill_state state) -{ - return dell_rfkill_set(1, state); -} - -static int dell_bluetooth_set(void *data, enum rfkill_state state) -{ - return dell_rfkill_set(2, state); -} - -static int dell_wwan_set(void *data, enum rfkill_state state) -{ - return dell_rfkill_set(3, state); -} - -static int dell_rfkill_get(int bit, enum rfkill_state *state) +static void dell_rfkill_query(struct rfkill *rfkill, void *data) { struct calling_interface_buffer buffer; int status; - int new_state = RFKILL_STATE_HARD_BLOCKED; + int bit = (unsigned long)data + 16; memset(&buffer, 0, sizeof(struct calling_interface_buffer)); dell_send_request(&buffer, 17, 11); status = buffer.output[1]; - if (status & (1<<16)) - new_state = RFKILL_STATE_SOFT_BLOCKED; - - if (status & (1<name = "dell-wifi"; - wifi_rfkill->toggle_radio = dell_wifi_set; - wifi_rfkill->get_state = dell_wifi_get; + } ret = rfkill_register(wifi_rfkill); if (ret) goto err_wifi; } if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) { - bluetooth_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_BLUETOOTH); - if (!bluetooth_rfkill) + bluetooth_rfkill = rfkill_alloc("dell-bluetooth", NULL, + RFKILL_TYPE_BLUETOOTH, + &dell_rfkill_ops, (void *) 2); + if (!bluetooth_rfkill) { + ret = -ENOMEM; goto err_bluetooth; - bluetooth_rfkill->name = "dell-bluetooth"; - bluetooth_rfkill->toggle_radio = dell_bluetooth_set; - bluetooth_rfkill->get_state = dell_bluetooth_get; + } ret = rfkill_register(bluetooth_rfkill); if (ret) goto err_bluetooth; } if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) { - wwan_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_WWAN); - if (!wwan_rfkill) + wwan_rfkill = rfkill_alloc("dell-wwan", NULL, RFKILL_TYPE_WWAN, + &dell_rfkill_ops, (void *) 3); + if (!wwan_rfkill) { + ret = -ENOMEM; goto err_wwan; - wwan_rfkill->name = "dell-wwan"; - wwan_rfkill->toggle_radio = dell_wwan_set; - wwan_rfkill->get_state = dell_wwan_get; + } ret = rfkill_register(wwan_rfkill); if (ret) goto err_wwan; @@ -285,22 +255,15 @@ static int dell_setup_rfkill(void) return 0; err_wwan: - if (wwan_rfkill) - rfkill_free(wwan_rfkill); - if (bluetooth_rfkill) { + rfkill_destroy(wwan_rfkill); + if (bluetooth_rfkill) rfkill_unregister(bluetooth_rfkill); - bluetooth_rfkill = NULL; - } err_bluetooth: - if (bluetooth_rfkill) - rfkill_free(bluetooth_rfkill); - if (wifi_rfkill) { + rfkill_destroy(bluetooth_rfkill); + if (wifi_rfkill) rfkill_unregister(wifi_rfkill); - wifi_rfkill = NULL; - } err_wifi: - if (wifi_rfkill) - rfkill_free(wifi_rfkill); + rfkill_destroy(wifi_rfkill); return ret; } diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c index 353a898c3693..1208d0cedd15 100644 --- a/drivers/platform/x86/eeepc-laptop.c +++ b/drivers/platform/x86/eeepc-laptop.c @@ -299,39 +299,22 @@ static int update_bl_status(struct backlight_device *bd) * Rfkill helpers */ -static int eeepc_wlan_rfkill_set(void *data, enum rfkill_state state) -{ - if (state == RFKILL_STATE_SOFT_BLOCKED) - return set_acpi(CM_ASL_WLAN, 0); - else - return set_acpi(CM_ASL_WLAN, 1); -} - -static int eeepc_wlan_rfkill_state(void *data, enum rfkill_state *state) +static bool eeepc_wlan_rfkill_blocked(void) { if (get_acpi(CM_ASL_WLAN) == 1) - *state = RFKILL_STATE_UNBLOCKED; - else - *state = RFKILL_STATE_SOFT_BLOCKED; - return 0; + return false; + return true; } -static int eeepc_bluetooth_rfkill_set(void *data, enum rfkill_state state) +static int eeepc_rfkill_set(void *data, bool blocked) { - if (state == RFKILL_STATE_SOFT_BLOCKED) - return set_acpi(CM_ASL_BLUETOOTH, 0); - else - return set_acpi(CM_ASL_BLUETOOTH, 1); + unsigned long asl = (unsigned long)data; + return set_acpi(asl, !blocked); } -static int eeepc_bluetooth_rfkill_state(void *data, enum rfkill_state *state) -{ - if (get_acpi(CM_ASL_BLUETOOTH) == 1) - *state = RFKILL_STATE_UNBLOCKED; - else - *state = RFKILL_STATE_SOFT_BLOCKED; - return 0; -} +static const struct rfkill_ops eeepc_rfkill_ops = { + .set_block = eeepc_rfkill_set, +}; /* * Sys helpers @@ -531,9 +514,9 @@ static int notify_brn(void) static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) { - enum rfkill_state state; struct pci_dev *dev; struct pci_bus *bus = pci_find_bus(0, 1); + bool blocked; if (event != ACPI_NOTIFY_BUS_CHECK) return; @@ -543,9 +526,8 @@ static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) return; } - eeepc_wlan_rfkill_state(ehotk->eeepc_wlan_rfkill, &state); - - if (state == RFKILL_STATE_UNBLOCKED) { + blocked = eeepc_wlan_rfkill_blocked(); + if (!blocked) { dev = pci_get_slot(bus, 0); if (dev) { /* Device already present */ @@ -566,7 +548,7 @@ static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) } } - rfkill_force_state(ehotk->eeepc_wlan_rfkill, state); + rfkill_set_sw_state(ehotk->eeepc_wlan_rfkill, blocked); } static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data) @@ -684,26 +666,17 @@ static int eeepc_hotk_add(struct acpi_device *device) eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7"); if (get_acpi(CM_ASL_WLAN) != -1) { - ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev, - RFKILL_TYPE_WLAN); + ehotk->eeepc_wlan_rfkill = rfkill_alloc("eeepc-wlan", + &device->dev, + RFKILL_TYPE_WLAN, + &eeepc_rfkill_ops, + (void *)CM_ASL_WLAN); if (!ehotk->eeepc_wlan_rfkill) goto wlan_fail; - ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan"; - ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set; - ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state; - if (get_acpi(CM_ASL_WLAN) == 1) { - ehotk->eeepc_wlan_rfkill->state = - RFKILL_STATE_UNBLOCKED; - rfkill_set_default(RFKILL_TYPE_WLAN, - RFKILL_STATE_UNBLOCKED); - } else { - ehotk->eeepc_wlan_rfkill->state = - RFKILL_STATE_SOFT_BLOCKED; - rfkill_set_default(RFKILL_TYPE_WLAN, - RFKILL_STATE_SOFT_BLOCKED); - } + rfkill_set_global_sw_state(RFKILL_TYPE_WLAN, + get_acpi(CM_ASL_WLAN) != 1); result = rfkill_register(ehotk->eeepc_wlan_rfkill); if (result) goto wlan_fail; @@ -711,28 +684,17 @@ static int eeepc_hotk_add(struct acpi_device *device) if (get_acpi(CM_ASL_BLUETOOTH) != -1) { ehotk->eeepc_bluetooth_rfkill = - rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH); + rfkill_alloc("eeepc-bluetooth", + &device->dev, + RFKILL_TYPE_BLUETOOTH, + &eeepc_rfkill_ops, + (void *)CM_ASL_BLUETOOTH); if (!ehotk->eeepc_bluetooth_rfkill) goto bluetooth_fail; - ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth"; - ehotk->eeepc_bluetooth_rfkill->toggle_radio = - eeepc_bluetooth_rfkill_set; - ehotk->eeepc_bluetooth_rfkill->get_state = - eeepc_bluetooth_rfkill_state; - if (get_acpi(CM_ASL_BLUETOOTH) == 1) { - ehotk->eeepc_bluetooth_rfkill->state = - RFKILL_STATE_UNBLOCKED; - rfkill_set_default(RFKILL_TYPE_BLUETOOTH, - RFKILL_STATE_UNBLOCKED); - } else { - ehotk->eeepc_bluetooth_rfkill->state = - RFKILL_STATE_SOFT_BLOCKED; - rfkill_set_default(RFKILL_TYPE_BLUETOOTH, - RFKILL_STATE_SOFT_BLOCKED); - } - + rfkill_set_global_sw_state(RFKILL_TYPE_BLUETOOTH, + get_acpi(CM_ASL_BLUETOOTH) != 1); result = rfkill_register(ehotk->eeepc_bluetooth_rfkill); if (result) goto bluetooth_fail; @@ -741,13 +703,10 @@ static int eeepc_hotk_add(struct acpi_device *device) return 0; bluetooth_fail: - if (ehotk->eeepc_bluetooth_rfkill) - rfkill_free(ehotk->eeepc_bluetooth_rfkill); + rfkill_destroy(ehotk->eeepc_bluetooth_rfkill); rfkill_unregister(ehotk->eeepc_wlan_rfkill); - ehotk->eeepc_wlan_rfkill = NULL; wlan_fail: - if (ehotk->eeepc_wlan_rfkill) - rfkill_free(ehotk->eeepc_wlan_rfkill); + rfkill_destroy(ehotk->eeepc_wlan_rfkill); eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6"); eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7"); ehotk_fail: diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c index fe171fad12cf..8d931145cbfa 100644 --- a/drivers/platform/x86/hp-wmi.c +++ b/drivers/platform/x86/hp-wmi.c @@ -154,58 +154,46 @@ static int hp_wmi_dock_state(void) return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0); } -static int hp_wmi_wifi_set(void *data, enum rfkill_state state) +static int hp_wmi_set_block(void *data, bool blocked) { - if (state) - return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x101); - else - return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x100); -} + unsigned long b = (unsigned long) data; + int query = BIT(b + 8) | ((!!blocked) << b); -static int hp_wmi_bluetooth_set(void *data, enum rfkill_state state) -{ - if (state) - return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x202); - else - return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x200); + return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query); } -static int hp_wmi_wwan_set(void *data, enum rfkill_state state) -{ - if (state) - return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x404); - else - return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x400); -} +static const struct rfkill_ops hp_wmi_rfkill_ops = { + .set_block = hp_wmi_set_block, +}; -static int hp_wmi_wifi_state(void) +static bool hp_wmi_wifi_state(void) { int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); if (wireless & 0x100) - return RFKILL_STATE_UNBLOCKED; + return false; else - return RFKILL_STATE_SOFT_BLOCKED; + return true; } -static int hp_wmi_bluetooth_state(void) +static bool hp_wmi_bluetooth_state(void) { int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); if (wireless & 0x10000) - return RFKILL_STATE_UNBLOCKED; + return false; else - return RFKILL_STATE_SOFT_BLOCKED; + return true; } -static int hp_wmi_wwan_state(void) +static bool hp_wmi_wwan_state(void) { int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); if (wireless & 0x1000000) - return RFKILL_STATE_UNBLOCKED; + return false; else - return RFKILL_STATE_SOFT_BLOCKED; + return true; } static ssize_t show_display(struct device *dev, struct device_attribute *attr, @@ -347,14 +335,14 @@ static void hp_wmi_notify(u32 value, void *context) } } else if (eventcode == 0x5) { if (wifi_rfkill) - rfkill_force_state(wifi_rfkill, - hp_wmi_wifi_state()); + rfkill_set_sw_state(wifi_rfkill, + hp_wmi_wifi_state()); if (bluetooth_rfkill) - rfkill_force_state(bluetooth_rfkill, - hp_wmi_bluetooth_state()); + rfkill_set_sw_state(bluetooth_rfkill, + hp_wmi_bluetooth_state()); if (wwan_rfkill) - rfkill_force_state(wwan_rfkill, - hp_wmi_wwan_state()); + rfkill_set_sw_state(wwan_rfkill, + hp_wmi_wwan_state()); } else printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n", eventcode); @@ -430,31 +418,34 @@ static int __init hp_wmi_bios_setup(struct platform_device *device) goto add_sysfs_error; if (wireless & 0x1) { - wifi_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WLAN); - wifi_rfkill->name = "hp-wifi"; - wifi_rfkill->state = hp_wmi_wifi_state(); - wifi_rfkill->toggle_radio = hp_wmi_wifi_set; + wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev, + RFKILL_TYPE_WLAN, + &hp_wmi_rfkill_ops, + (void *) 0); + rfkill_set_sw_state(wifi_rfkill, hp_wmi_wifi_state()); err = rfkill_register(wifi_rfkill); if (err) - goto add_sysfs_error; + goto register_wifi_error; } if (wireless & 0x2) { - bluetooth_rfkill = rfkill_allocate(&device->dev, - RFKILL_TYPE_BLUETOOTH); - bluetooth_rfkill->name = "hp-bluetooth"; - bluetooth_rfkill->state = hp_wmi_bluetooth_state(); - bluetooth_rfkill->toggle_radio = hp_wmi_bluetooth_set; + bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev, + RFKILL_TYPE_BLUETOOTH, + &hp_wmi_rfkill_ops, + (void *) 1); + rfkill_set_sw_state(bluetooth_rfkill, + hp_wmi_bluetooth_state()); err = rfkill_register(bluetooth_rfkill); if (err) goto register_bluetooth_error; } if (wireless & 0x4) { - wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WWAN); - wwan_rfkill->name = "hp-wwan"; - wwan_rfkill->state = hp_wmi_wwan_state(); - wwan_rfkill->toggle_radio = hp_wmi_wwan_set; + wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev, + RFKILL_TYPE_WWAN, + &hp_wmi_rfkill_ops, + (void *) 2); + rfkill_set_sw_state(wwan_rfkill, hp_wmi_wwan_state()); err = rfkill_register(wwan_rfkill); if (err) goto register_wwan_err; @@ -462,11 +453,15 @@ static int __init hp_wmi_bios_setup(struct platform_device *device) return 0; register_wwan_err: + rfkill_destroy(wwan_rfkill); if (bluetooth_rfkill) rfkill_unregister(bluetooth_rfkill); register_bluetooth_error: + rfkill_destroy(bluetooth_rfkill); if (wifi_rfkill) rfkill_unregister(wifi_rfkill); +register_wifi_error: + rfkill_destroy(wifi_rfkill); add_sysfs_error: cleanup_sysfs(device); return err; @@ -476,12 +471,18 @@ static int __exit hp_wmi_bios_remove(struct platform_device *device) { cleanup_sysfs(device); - if (wifi_rfkill) + if (wifi_rfkill) { rfkill_unregister(wifi_rfkill); - if (bluetooth_rfkill) + rfkill_destroy(wifi_rfkill); + } + if (bluetooth_rfkill) { rfkill_unregister(bluetooth_rfkill); - if (wwan_rfkill) + rfkill_destroy(wifi_rfkill); + } + if (wwan_rfkill) { rfkill_unregister(wwan_rfkill); + rfkill_destroy(wwan_rfkill); + } return 0; } diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index f1963b05175b..aec0b27fd774 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -128,11 +128,11 @@ enum sony_nc_rfkill { SONY_BLUETOOTH, SONY_WWAN, SONY_WIMAX, - SONY_RFKILL_MAX, + N_SONY_RFKILL, }; -static struct rfkill *sony_rfkill_devices[SONY_RFKILL_MAX]; -static int sony_rfkill_address[SONY_RFKILL_MAX] = {0x300, 0x500, 0x700, 0x900}; +static struct rfkill *sony_rfkill_devices[N_SONY_RFKILL]; +static int sony_rfkill_address[N_SONY_RFKILL] = {0x300, 0x500, 0x700, 0x900}; static void sony_nc_rfkill_update(void); /*********** Input Devices ***********/ @@ -1051,147 +1051,98 @@ static void sony_nc_rfkill_cleanup(void) { int i; - for (i = 0; i < SONY_RFKILL_MAX; i++) { - if (sony_rfkill_devices[i]) + for (i = 0; i < N_SONY_RFKILL; i++) { + if (sony_rfkill_devices[i]) { rfkill_unregister(sony_rfkill_devices[i]); + rfkill_destroy(sony_rfkill_devices[i]); + } } } -static int sony_nc_rfkill_get(void *data, enum rfkill_state *state) -{ - int result; - int argument = sony_rfkill_address[(long) data]; - - sony_call_snc_handle(0x124, 0x200, &result); - if (result & 0x1) { - sony_call_snc_handle(0x124, argument, &result); - if (result & 0xf) - *state = RFKILL_STATE_UNBLOCKED; - else - *state = RFKILL_STATE_SOFT_BLOCKED; - } else { - *state = RFKILL_STATE_HARD_BLOCKED; - } - - return 0; -} - -static int sony_nc_rfkill_set(void *data, enum rfkill_state state) +static int sony_nc_rfkill_set(void *data, bool blocked) { int result; int argument = sony_rfkill_address[(long) data] + 0x100; - if (state == RFKILL_STATE_UNBLOCKED) + if (!blocked) argument |= 0xff0000; return sony_call_snc_handle(0x124, argument, &result); } -static int sony_nc_setup_wifi_rfkill(struct acpi_device *device) -{ - int err = 0; - struct rfkill *sony_wifi_rfkill; - - sony_wifi_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WLAN); - if (!sony_wifi_rfkill) - return -1; - sony_wifi_rfkill->name = "sony-wifi"; - sony_wifi_rfkill->toggle_radio = sony_nc_rfkill_set; - sony_wifi_rfkill->get_state = sony_nc_rfkill_get; - sony_wifi_rfkill->data = (void *)SONY_WIFI; - err = rfkill_register(sony_wifi_rfkill); - if (err) - rfkill_free(sony_wifi_rfkill); - else { - sony_rfkill_devices[SONY_WIFI] = sony_wifi_rfkill; - sony_nc_rfkill_set(sony_wifi_rfkill->data, - RFKILL_STATE_UNBLOCKED); - } - return err; -} +static const struct rfkill_ops sony_rfkill_ops = { + .set_block = sony_nc_rfkill_set, +}; -static int sony_nc_setup_bluetooth_rfkill(struct acpi_device *device) +static int sony_nc_setup_rfkill(struct acpi_device *device, + enum sony_nc_rfkill nc_type) { int err = 0; - struct rfkill *sony_bluetooth_rfkill; - - sony_bluetooth_rfkill = rfkill_allocate(&device->dev, - RFKILL_TYPE_BLUETOOTH); - if (!sony_bluetooth_rfkill) - return -1; - sony_bluetooth_rfkill->name = "sony-bluetooth"; - sony_bluetooth_rfkill->toggle_radio = sony_nc_rfkill_set; - sony_bluetooth_rfkill->get_state = sony_nc_rfkill_get; - sony_bluetooth_rfkill->data = (void *)SONY_BLUETOOTH; - err = rfkill_register(sony_bluetooth_rfkill); - if (err) - rfkill_free(sony_bluetooth_rfkill); - else { - sony_rfkill_devices[SONY_BLUETOOTH] = sony_bluetooth_rfkill; - sony_nc_rfkill_set(sony_bluetooth_rfkill->data, - RFKILL_STATE_UNBLOCKED); + struct rfkill *rfk; + enum rfkill_type type; + const char *name; + + switch (nc_type) { + case SONY_WIFI: + type = RFKILL_TYPE_WLAN; + name = "sony-wifi"; + break; + case SONY_BLUETOOTH: + type = RFKILL_TYPE_BLUETOOTH; + name = "sony-bluetooth"; + break; + case SONY_WWAN: + type = RFKILL_TYPE_WWAN; + name = "sony-wwan"; + break; + case SONY_WIMAX: + type = RFKILL_TYPE_WIMAX; + name = "sony-wimax"; + break; + default: + return -EINVAL; } - return err; -} -static int sony_nc_setup_wwan_rfkill(struct acpi_device *device) -{ - int err = 0; - struct rfkill *sony_wwan_rfkill; + rfk = rfkill_alloc(name, &device->dev, type, + &sony_rfkill_ops, (void *)nc_type); + if (!rfk) + return -ENOMEM; - sony_wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WWAN); - if (!sony_wwan_rfkill) - return -1; - sony_wwan_rfkill->name = "sony-wwan"; - sony_wwan_rfkill->toggle_radio = sony_nc_rfkill_set; - sony_wwan_rfkill->get_state = sony_nc_rfkill_get; - sony_wwan_rfkill->data = (void *)SONY_WWAN; - err = rfkill_register(sony_wwan_rfkill); - if (err) - rfkill_free(sony_wwan_rfkill); - else { - sony_rfkill_devices[SONY_WWAN] = sony_wwan_rfkill; - sony_nc_rfkill_set(sony_wwan_rfkill->data, - RFKILL_STATE_UNBLOCKED); + err = rfkill_register(rfk); + if (err) { + rfkill_destroy(rfk); + return err; } + sony_rfkill_devices[nc_type] = rfk; + sony_nc_rfkill_set((void *)nc_type, false); return err; } -static int sony_nc_setup_wimax_rfkill(struct acpi_device *device) +static void sony_nc_rfkill_update() { - int err = 0; - struct rfkill *sony_wimax_rfkill; + enum sony_nc_rfkill i; + int result; + bool hwblock; - sony_wimax_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WIMAX); - if (!sony_wimax_rfkill) - return -1; - sony_wimax_rfkill->name = "sony-wimax"; - sony_wimax_rfkill->toggle_radio = sony_nc_rfkill_set; - sony_wimax_rfkill->get_state = sony_nc_rfkill_get; - sony_wimax_rfkill->data = (void *)SONY_WIMAX; - err = rfkill_register(sony_wimax_rfkill); - if (err) - rfkill_free(sony_wimax_rfkill); - else { - sony_rfkill_devices[SONY_WIMAX] = sony_wimax_rfkill; - sony_nc_rfkill_set(sony_wimax_rfkill->data, - RFKILL_STATE_UNBLOCKED); - } - return err; -} + sony_call_snc_handle(0x124, 0x200, &result); + hwblock = !(result & 0x1); -static void sony_nc_rfkill_update() -{ - int i; - enum rfkill_state state; + for (i = 0; i < N_SONY_RFKILL; i++) { + int argument = sony_rfkill_address[i]; - for (i = 0; i < SONY_RFKILL_MAX; i++) { - if (sony_rfkill_devices[i]) { - sony_rfkill_devices[i]-> - get_state(sony_rfkill_devices[i]->data, - &state); - rfkill_force_state(sony_rfkill_devices[i], state); + if (!sony_rfkill_devices[i]) + continue; + + if (hwblock) { + if (rfkill_set_hw_state(sony_rfkill_devices[i], true)) + sony_nc_rfkill_set(sony_rfkill_devices[i], + true); + continue; } + + sony_call_snc_handle(0x124, argument, &result); + rfkill_set_states(sony_rfkill_devices[i], + !(result & 0xf), false); } } @@ -1210,13 +1161,13 @@ static int sony_nc_rfkill_setup(struct acpi_device *device) } if (result & 0x1) - sony_nc_setup_wifi_rfkill(device); + sony_nc_setup_rfkill(device, SONY_WIFI); if (result & 0x2) - sony_nc_setup_bluetooth_rfkill(device); + sony_nc_setup_rfkill(device, SONY_BLUETOOTH); if (result & 0x1c) - sony_nc_setup_wwan_rfkill(device); + sony_nc_setup_rfkill(device, SONY_WWAN); if (result & 0x20) - sony_nc_setup_wimax_rfkill(device); + sony_nc_setup_rfkill(device, SONY_WIMAX); return 0; } diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 912be65b6261..cfcafa4e9473 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -166,13 +166,6 @@ enum { #define TPACPI_MAX_ACPI_ARGS 3 -/* rfkill switches */ -enum { - TPACPI_RFK_BLUETOOTH_SW_ID = 0, - TPACPI_RFK_WWAN_SW_ID, - TPACPI_RFK_UWB_SW_ID, -}; - /* printk headers */ #define TPACPI_LOG TPACPI_FILE ": " #define TPACPI_EMERG KERN_EMERG TPACPI_LOG @@ -1005,67 +998,237 @@ static int __init tpacpi_check_std_acpi_brightness_support(void) return 0; } -static int __init tpacpi_new_rfkill(const unsigned int id, - struct rfkill **rfk, +static void printk_deprecated_attribute(const char * const what, + const char * const details) +{ + tpacpi_log_usertask("deprecated sysfs attribute"); + printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and " + "will be removed. %s\n", + what, details); +} + +/************************************************************************* + * rfkill and radio control support helpers + */ + +/* + * ThinkPad-ACPI firmware handling model: + * + * WLSW (master wireless switch) is event-driven, and is common to all + * firmware-controlled radios. It cannot be controlled, just monitored, + * as expected. It overrides all radio state in firmware + * + * The kernel, a masked-off hotkey, and WLSW can change the radio state + * (TODO: verify how WLSW interacts with the returned radio state). + * + * The only time there are shadow radio state changes, is when + * masked-off hotkeys are used. + */ + +/* + * Internal driver API for radio state: + * + * int: < 0 = error, otherwise enum tpacpi_rfkill_state + * bool: true means radio blocked (off) + */ +enum tpacpi_rfkill_state { + TPACPI_RFK_RADIO_OFF = 0, + TPACPI_RFK_RADIO_ON +}; + +/* rfkill switches */ +enum tpacpi_rfk_id { + TPACPI_RFK_BLUETOOTH_SW_ID = 0, + TPACPI_RFK_WWAN_SW_ID, + TPACPI_RFK_UWB_SW_ID, + TPACPI_RFK_SW_MAX +}; + +static const char *tpacpi_rfkill_names[] = { + [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", + [TPACPI_RFK_WWAN_SW_ID] = "wwan", + [TPACPI_RFK_UWB_SW_ID] = "uwb", + [TPACPI_RFK_SW_MAX] = NULL +}; + +/* ThinkPad-ACPI rfkill subdriver */ +struct tpacpi_rfk { + struct rfkill *rfkill; + enum tpacpi_rfk_id id; + const struct tpacpi_rfk_ops *ops; +}; + +struct tpacpi_rfk_ops { + /* firmware interface */ + int (*get_status)(void); + int (*set_status)(const enum tpacpi_rfkill_state); +}; + +static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; + +/* Query FW and update rfkill sw state for a given rfkill switch */ +static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) +{ + int status; + + if (!tp_rfk) + return -ENODEV; + + status = (tp_rfk->ops->get_status)(); + if (status < 0) + return status; + + rfkill_set_sw_state(tp_rfk->rfkill, + (status == TPACPI_RFK_RADIO_OFF)); + + return status; +} + +/* Query FW and update rfkill sw state for all rfkill switches */ +static void tpacpi_rfk_update_swstate_all(void) +{ + unsigned int i; + + for (i = 0; i < TPACPI_RFK_SW_MAX; i++) + tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); +} + +/* + * Sync the HW-blocking state of all rfkill switches, + * do notice it causes the rfkill core to schedule uevents + */ +static void tpacpi_rfk_update_hwblock_state(bool blocked) +{ + unsigned int i; + struct tpacpi_rfk *tp_rfk; + + for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { + tp_rfk = tpacpi_rfkill_switches[i]; + if (tp_rfk) { + if (rfkill_set_hw_state(tp_rfk->rfkill, + blocked)) { + /* ignore -- we track sw block */ + } + } + } +} + +/* Call to get the WLSW state from the firmware */ +static int hotkey_get_wlsw(void); + +/* Call to query WLSW state and update all rfkill switches */ +static bool tpacpi_rfk_check_hwblock_state(void) +{ + int res = hotkey_get_wlsw(); + int hw_blocked; + + /* When unknown or unsupported, we have to assume it is unblocked */ + if (res < 0) + return false; + + hw_blocked = (res == TPACPI_RFK_RADIO_OFF); + tpacpi_rfk_update_hwblock_state(hw_blocked); + + return hw_blocked; +} + +static int tpacpi_rfk_hook_set_block(void *data, bool blocked) +{ + struct tpacpi_rfk *tp_rfk = data; + int res; + + dbg_printk(TPACPI_DBG_RFKILL, + "request to change radio state to %s\n", + blocked ? "blocked" : "unblocked"); + + /* try to set radio state */ + res = (tp_rfk->ops->set_status)(blocked ? + TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); + + /* and update the rfkill core with whatever the FW really did */ + tpacpi_rfk_update_swstate(tp_rfk); + + return (res < 0) ? res : 0; +} + +static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { + .set_block = tpacpi_rfk_hook_set_block, +}; + +static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, + const struct tpacpi_rfk_ops *tp_rfkops, const enum rfkill_type rfktype, const char *name, - const bool set_default, - int (*toggle_radio)(void *, enum rfkill_state), - int (*get_state)(void *, enum rfkill_state *)) + const bool set_default) { + struct tpacpi_rfk *atp_rfk; int res; - enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED; + bool initial_sw_state = false; + int initial_sw_status; - res = get_state(NULL, &initial_state); - if (res < 0) { + BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); + + initial_sw_status = (tp_rfkops->get_status)(); + if (initial_sw_status < 0) { printk(TPACPI_ERR "failed to read initial state for %s, error %d; " - "will turn radio off\n", name, res); - } else if (set_default) { - /* try to set the initial state as the default for the rfkill - * type, since we ask the firmware to preserve it across S5 in - * NVRAM */ - if (rfkill_set_default(rfktype, - (initial_state == RFKILL_STATE_UNBLOCKED) ? - RFKILL_STATE_UNBLOCKED : - RFKILL_STATE_SOFT_BLOCKED) == -EPERM) - vdbg_printk(TPACPI_DBG_RFKILL, - "Default state for %s cannot be changed\n", - name); - } - - *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype); - if (!*rfk) { + "will turn radio off\n", name, initial_sw_status); + } else { + initial_sw_state = (initial_sw_status == TPACPI_RFK_RADIO_OFF); + if (set_default) { + /* try to set the initial state as the default for the + * rfkill type, since we ask the firmware to preserve + * it across S5 in NVRAM */ + rfkill_set_global_sw_state(rfktype, initial_sw_state); + } + } + + atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); + if (atp_rfk) + atp_rfk->rfkill = rfkill_alloc(name, + &tpacpi_pdev->dev, + rfktype, + &tpacpi_rfk_rfkill_ops, + atp_rfk); + if (!atp_rfk || !atp_rfk->rfkill) { printk(TPACPI_ERR "failed to allocate memory for rfkill class\n"); + kfree(atp_rfk); return -ENOMEM; } - (*rfk)->name = name; - (*rfk)->get_state = get_state; - (*rfk)->toggle_radio = toggle_radio; - (*rfk)->state = initial_state; + atp_rfk->id = id; + atp_rfk->ops = tp_rfkops; + + rfkill_set_states(atp_rfk->rfkill, initial_sw_state, + tpacpi_rfk_check_hwblock_state()); - res = rfkill_register(*rfk); + res = rfkill_register(atp_rfk->rfkill); if (res < 0) { printk(TPACPI_ERR "failed to register %s rfkill switch: %d\n", name, res); - rfkill_free(*rfk); - *rfk = NULL; + rfkill_destroy(atp_rfk->rfkill); + kfree(atp_rfk); return res; } + tpacpi_rfkill_switches[id] = atp_rfk; return 0; } -static void printk_deprecated_attribute(const char * const what, - const char * const details) +static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) { - tpacpi_log_usertask("deprecated sysfs attribute"); - printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and " - "will be removed. %s\n", - what, details); + struct tpacpi_rfk *tp_rfk; + + BUG_ON(id >= TPACPI_RFK_SW_MAX); + + tp_rfk = tpacpi_rfkill_switches[id]; + if (tp_rfk) { + rfkill_unregister(tp_rfk->rfkill); + tpacpi_rfkill_switches[id] = NULL; + kfree(tp_rfk); + } } static void printk_deprecated_rfkill_attribute(const char * const what) @@ -1074,6 +1237,112 @@ static void printk_deprecated_rfkill_attribute(const char * const what) "Please switch to generic rfkill before year 2010"); } +/* sysfs enable ------------------------------------------------ */ +static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, + struct device_attribute *attr, + char *buf) +{ + int status; + + printk_deprecated_rfkill_attribute(attr->attr.name); + + /* This is in the ABI... */ + if (tpacpi_rfk_check_hwblock_state()) { + status = TPACPI_RFK_RADIO_OFF; + } else { + status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); + if (status < 0) + return status; + } + + return snprintf(buf, PAGE_SIZE, "%d\n", + (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); +} + +static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, + struct device_attribute *attr, + const char *buf, size_t count) +{ + unsigned long t; + int res; + + printk_deprecated_rfkill_attribute(attr->attr.name); + + if (parse_strtoul(buf, 1, &t)) + return -EINVAL; + + tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); + + /* This is in the ABI... */ + if (tpacpi_rfk_check_hwblock_state() && !!t) + return -EPERM; + + res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? + TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); + tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); + + return (res < 0) ? res : count; +} + +/* procfs -------------------------------------------------------------- */ +static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p) +{ + int len = 0; + + if (id >= TPACPI_RFK_SW_MAX) + len += sprintf(p + len, "status:\t\tnot supported\n"); + else { + int status; + + /* This is in the ABI... */ + if (tpacpi_rfk_check_hwblock_state()) { + status = TPACPI_RFK_RADIO_OFF; + } else { + status = tpacpi_rfk_update_swstate( + tpacpi_rfkill_switches[id]); + if (status < 0) + return status; + } + + len += sprintf(p + len, "status:\t\t%s\n", + (status == TPACPI_RFK_RADIO_ON) ? + "enabled" : "disabled"); + len += sprintf(p + len, "commands:\tenable, disable\n"); + } + + return len; +} + +static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) +{ + char *cmd; + int status = -1; + int res = 0; + + if (id >= TPACPI_RFK_SW_MAX) + return -ENODEV; + + while ((cmd = next_cmd(&buf))) { + if (strlencmp(cmd, "enable") == 0) + status = TPACPI_RFK_RADIO_ON; + else if (strlencmp(cmd, "disable") == 0) + status = TPACPI_RFK_RADIO_OFF; + else + return -EINVAL; + } + + if (status != -1) { + tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", + (status == TPACPI_RFK_RADIO_ON) ? + "enable" : "disable", + tpacpi_rfkill_names[id]); + res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); + tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); + } + + return res; +} + /************************************************************************* * thinkpad-acpi driver attributes */ @@ -1127,8 +1396,6 @@ static DRIVER_ATTR(version, S_IRUGO, #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES -static void tpacpi_send_radiosw_update(void); - /* wlsw_emulstate ------------------------------------------------------ */ static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv, char *buf) @@ -1144,11 +1411,10 @@ static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv, if (parse_strtoul(buf, 1, &t)) return -EINVAL; - if (tpacpi_wlsw_emulstate != t) { - tpacpi_wlsw_emulstate = !!t; - tpacpi_send_radiosw_update(); - } else + if (tpacpi_wlsw_emulstate != !!t) { tpacpi_wlsw_emulstate = !!t; + tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ + } return count; } @@ -1463,17 +1729,23 @@ static struct attribute_set *hotkey_dev_attributes; /* HKEY.MHKG() return bits */ #define TP_HOTKEY_TABLET_MASK (1 << 3) -static int hotkey_get_wlsw(int *status) +static int hotkey_get_wlsw(void) { + int status; + + if (!tp_features.hotkey_wlsw) + return -ENODEV; + #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES - if (dbg_wlswemul) { - *status = !!tpacpi_wlsw_emulstate; - return 0; - } + if (dbg_wlswemul) + return (tpacpi_wlsw_emulstate) ? + TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; #endif - if (!acpi_evalf(hkey_handle, status, "WLSW", "d")) + + if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) return -EIO; - return 0; + + return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; } static int hotkey_get_tablet_mode(int *status) @@ -2107,12 +2379,16 @@ static ssize_t hotkey_radio_sw_show(struct device *dev, struct device_attribute *attr, char *buf) { - int res, s; - res = hotkey_get_wlsw(&s); + int res; + res = hotkey_get_wlsw(); if (res < 0) return res; - return snprintf(buf, PAGE_SIZE, "%d\n", !!s); + /* Opportunistic update */ + tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); + + return snprintf(buf, PAGE_SIZE, "%d\n", + (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); } static struct device_attribute dev_attr_hotkey_radio_sw = @@ -2223,30 +2499,52 @@ static struct attribute *hotkey_mask_attributes[] __initdata = { &dev_attr_hotkey_wakeup_hotunplug_complete.attr, }; -static void bluetooth_update_rfk(void); -static void wan_update_rfk(void); -static void uwb_update_rfk(void); +/* + * Sync both the hw and sw blocking state of all switches + */ static void tpacpi_send_radiosw_update(void) { int wlsw; - /* Sync these BEFORE sending any rfkill events */ - if (tp_features.bluetooth) - bluetooth_update_rfk(); - if (tp_features.wan) - wan_update_rfk(); - if (tp_features.uwb) - uwb_update_rfk(); + /* + * We must sync all rfkill controllers *before* issuing any + * rfkill input events, or we will race the rfkill core input + * handler. + * + * tpacpi_inputdev_send_mutex works as a syncronization point + * for the above. + * + * We optimize to avoid numerous calls to hotkey_get_wlsw. + */ - if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) { + wlsw = hotkey_get_wlsw(); + + /* Sync hw blocking state first if it is hw-blocked */ + if (wlsw == TPACPI_RFK_RADIO_OFF) + tpacpi_rfk_update_hwblock_state(true); + + /* Sync sw blocking state */ + tpacpi_rfk_update_swstate_all(); + + /* Sync hw blocking state last if it is hw-unblocked */ + if (wlsw == TPACPI_RFK_RADIO_ON) + tpacpi_rfk_update_hwblock_state(false); + + /* Issue rfkill input event for WLSW switch */ + if (!(wlsw < 0)) { mutex_lock(&tpacpi_inputdev_send_mutex); input_report_switch(tpacpi_inputdev, - SW_RFKILL_ALL, !!wlsw); + SW_RFKILL_ALL, (wlsw > 0)); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); } + + /* + * this can be unconditional, as we will poll state again + * if userspace uses the notify to read data + */ hotkey_radio_sw_notify_change(); } @@ -3056,8 +3354,6 @@ enum { #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" -static struct rfkill *tpacpi_bluetooth_rfkill; - static void bluetooth_suspend(pm_message_t state) { /* Try to make sure radio will resume powered off */ @@ -3067,83 +3363,47 @@ static void bluetooth_suspend(pm_message_t state) "bluetooth power down on resume request failed\n"); } -static int bluetooth_get_radiosw(void) +static int bluetooth_get_status(void) { int status; - if (!tp_features.bluetooth) - return -ENODEV; - - /* WLSW overrides bluetooth in firmware/hardware, reflect that */ - if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status) - return RFKILL_STATE_HARD_BLOCKED; - #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_bluetoothemul) return (tpacpi_bluetooth_emulstate) ? - RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; + TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; #endif if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) return -EIO; return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? - RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; + TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; } -static void bluetooth_update_rfk(void) +static int bluetooth_set_status(enum tpacpi_rfkill_state state) { int status; - if (!tpacpi_bluetooth_rfkill) - return; - - status = bluetooth_get_radiosw(); - if (status < 0) - return; - rfkill_force_state(tpacpi_bluetooth_rfkill, status); - vdbg_printk(TPACPI_DBG_RFKILL, - "forced rfkill state to %d\n", - status); -} - -static int bluetooth_set_radiosw(int radio_on, int update_rfk) -{ - int status; - - if (!tp_features.bluetooth) - return -ENODEV; - - /* WLSW overrides bluetooth in firmware/hardware, but there is no - * reason to risk weird behaviour. */ - if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status - && radio_on) - return -EPERM; - - vdbg_printk(TPACPI_DBG_RFKILL, - "will %s bluetooth\n", radio_on ? "enable" : "disable"); + "will attempt to %s bluetooth\n", + (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_bluetoothemul) { - tpacpi_bluetooth_emulstate = !!radio_on; - if (update_rfk) - bluetooth_update_rfk(); + tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); return 0; } #endif /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */ - if (radio_on) + if (state == TPACPI_RFK_RADIO_ON) status = TP_ACPI_BLUETOOTH_RADIOSSW; else status = 0; + if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) return -EIO; - if (update_rfk) - bluetooth_update_rfk(); - return 0; } @@ -3152,35 +3412,16 @@ static ssize_t bluetooth_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { - int status; - - printk_deprecated_rfkill_attribute("bluetooth_enable"); - - status = bluetooth_get_radiosw(); - if (status < 0) - return status; - - return snprintf(buf, PAGE_SIZE, "%d\n", - (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0); + return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, + attr, buf); } static ssize_t bluetooth_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - unsigned long t; - int res; - - printk_deprecated_rfkill_attribute("bluetooth_enable"); - - if (parse_strtoul(buf, 1, &t)) - return -EINVAL; - - tpacpi_disclose_usertask("bluetooth_enable", "set to %ld\n", t); - - res = bluetooth_set_radiosw(t, 1); - - return (res) ? res : count; + return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, + attr, buf, count); } static struct device_attribute dev_attr_bluetooth_enable = @@ -3198,23 +3439,10 @@ static const struct attribute_group bluetooth_attr_group = { .attrs = bluetooth_attributes, }; -static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state) -{ - int bts = bluetooth_get_radiosw(); - - if (bts < 0) - return bts; - - *state = bts; - return 0; -} - -static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state) -{ - dbg_printk(TPACPI_DBG_RFKILL, - "request to change radio state to %d\n", state); - return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0); -} +static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { + .get_status = bluetooth_get_status, + .set_status = bluetooth_set_status, +}; static void bluetooth_shutdown(void) { @@ -3230,13 +3458,12 @@ static void bluetooth_shutdown(void) static void bluetooth_exit(void) { - bluetooth_shutdown(); - - if (tpacpi_bluetooth_rfkill) - rfkill_unregister(tpacpi_bluetooth_rfkill); - sysfs_remove_group(&tpacpi_pdev->dev.kobj, &bluetooth_attr_group); + + tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); + + bluetooth_shutdown(); } static int __init bluetooth_init(struct ibm_init_struct *iibm) @@ -3277,20 +3504,18 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm) if (!tp_features.bluetooth) return 1; - res = sysfs_create_group(&tpacpi_pdev->dev.kobj, - &bluetooth_attr_group); - if (res) - return res; - res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, - &tpacpi_bluetooth_rfkill, + &bluetooth_tprfk_ops, RFKILL_TYPE_BLUETOOTH, TPACPI_RFK_BLUETOOTH_SW_NAME, - true, - tpacpi_bluetooth_rfk_set, - tpacpi_bluetooth_rfk_get); + true); + if (res) + return res; + + res = sysfs_create_group(&tpacpi_pdev->dev.kobj, + &bluetooth_attr_group); if (res) { - bluetooth_exit(); + tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); return res; } @@ -3300,46 +3525,12 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm) /* procfs -------------------------------------------------------------- */ static int bluetooth_read(char *p) { - int len = 0; - int status = bluetooth_get_radiosw(); - - if (!tp_features.bluetooth) - len += sprintf(p + len, "status:\t\tnot supported\n"); - else { - len += sprintf(p + len, "status:\t\t%s\n", - (status == RFKILL_STATE_UNBLOCKED) ? - "enabled" : "disabled"); - len += sprintf(p + len, "commands:\tenable, disable\n"); - } - - return len; + return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p); } static int bluetooth_write(char *buf) { - char *cmd; - int state = -1; - - if (!tp_features.bluetooth) - return -ENODEV; - - while ((cmd = next_cmd(&buf))) { - if (strlencmp(cmd, "enable") == 0) { - state = 1; - } else if (strlencmp(cmd, "disable") == 0) { - state = 0; - } else - return -EINVAL; - } - - if (state != -1) { - tpacpi_disclose_usertask("procfs bluetooth", - "attempt to %s\n", - state ? "enable" : "disable"); - bluetooth_set_radiosw(state, 1); - } - - return 0; + return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); } static struct ibm_struct bluetooth_driver_data = { @@ -3365,8 +3556,6 @@ enum { #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" -static struct rfkill *tpacpi_wan_rfkill; - static void wan_suspend(pm_message_t state) { /* Try to make sure radio will resume powered off */ @@ -3376,83 +3565,47 @@ static void wan_suspend(pm_message_t state) "WWAN power down on resume request failed\n"); } -static int wan_get_radiosw(void) +static int wan_get_status(void) { int status; - if (!tp_features.wan) - return -ENODEV; - - /* WLSW overrides WWAN in firmware/hardware, reflect that */ - if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status) - return RFKILL_STATE_HARD_BLOCKED; - #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_wwanemul) return (tpacpi_wwan_emulstate) ? - RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; + TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; #endif if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) return -EIO; return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? - RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; -} - -static void wan_update_rfk(void) -{ - int status; - - if (!tpacpi_wan_rfkill) - return; - - status = wan_get_radiosw(); - if (status < 0) - return; - rfkill_force_state(tpacpi_wan_rfkill, status); - - vdbg_printk(TPACPI_DBG_RFKILL, - "forced rfkill state to %d\n", - status); + TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; } -static int wan_set_radiosw(int radio_on, int update_rfk) +static int wan_set_status(enum tpacpi_rfkill_state state) { int status; - if (!tp_features.wan) - return -ENODEV; - - /* WLSW overrides bluetooth in firmware/hardware, but there is no - * reason to risk weird behaviour. */ - if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status - && radio_on) - return -EPERM; - vdbg_printk(TPACPI_DBG_RFKILL, - "will %s WWAN\n", radio_on ? "enable" : "disable"); + "will attempt to %s wwan\n", + (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_wwanemul) { - tpacpi_wwan_emulstate = !!radio_on; - if (update_rfk) - wan_update_rfk(); + tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); return 0; } #endif /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */ - if (radio_on) + if (state == TPACPI_RFK_RADIO_ON) status = TP_ACPI_WANCARD_RADIOSSW; else status = 0; + if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) return -EIO; - if (update_rfk) - wan_update_rfk(); - return 0; } @@ -3461,35 +3614,16 @@ static ssize_t wan_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { - int status; - - printk_deprecated_rfkill_attribute("wwan_enable"); - - status = wan_get_radiosw(); - if (status < 0) - return status; - - return snprintf(buf, PAGE_SIZE, "%d\n", - (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0); + return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, + attr, buf); } static ssize_t wan_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - unsigned long t; - int res; - - printk_deprecated_rfkill_attribute("wwan_enable"); - - if (parse_strtoul(buf, 1, &t)) - return -EINVAL; - - tpacpi_disclose_usertask("wwan_enable", "set to %ld\n", t); - - res = wan_set_radiosw(t, 1); - - return (res) ? res : count; + return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, + attr, buf, count); } static struct device_attribute dev_attr_wan_enable = @@ -3507,23 +3641,10 @@ static const struct attribute_group wan_attr_group = { .attrs = wan_attributes, }; -static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state) -{ - int wans = wan_get_radiosw(); - - if (wans < 0) - return wans; - - *state = wans; - return 0; -} - -static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state) -{ - dbg_printk(TPACPI_DBG_RFKILL, - "request to change radio state to %d\n", state); - return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0); -} +static const struct tpacpi_rfk_ops wan_tprfk_ops = { + .get_status = wan_get_status, + .set_status = wan_set_status, +}; static void wan_shutdown(void) { @@ -3539,13 +3660,12 @@ static void wan_shutdown(void) static void wan_exit(void) { - wan_shutdown(); - - if (tpacpi_wan_rfkill) - rfkill_unregister(tpacpi_wan_rfkill); - sysfs_remove_group(&tpacpi_pdev->dev.kobj, &wan_attr_group); + + tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); + + wan_shutdown(); } static int __init wan_init(struct ibm_init_struct *iibm) @@ -3584,20 +3704,19 @@ static int __init wan_init(struct ibm_init_struct *iibm) if (!tp_features.wan) return 1; - res = sysfs_create_group(&tpacpi_pdev->dev.kobj, - &wan_attr_group); - if (res) - return res; - res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, - &tpacpi_wan_rfkill, + &wan_tprfk_ops, RFKILL_TYPE_WWAN, TPACPI_RFK_WWAN_SW_NAME, - true, - tpacpi_wan_rfk_set, - tpacpi_wan_rfk_get); + true); + if (res) + return res; + + res = sysfs_create_group(&tpacpi_pdev->dev.kobj, + &wan_attr_group); + if (res) { - wan_exit(); + tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); return res; } @@ -3607,48 +3726,12 @@ static int __init wan_init(struct ibm_init_struct *iibm) /* procfs -------------------------------------------------------------- */ static int wan_read(char *p) { - int len = 0; - int status = wan_get_radiosw(); - - tpacpi_disclose_usertask("procfs wan", "read"); - - if (!tp_features.wan) - len += sprintf(p + len, "status:\t\tnot supported\n"); - else { - len += sprintf(p + len, "status:\t\t%s\n", - (status == RFKILL_STATE_UNBLOCKED) ? - "enabled" : "disabled"); - len += sprintf(p + len, "commands:\tenable, disable\n"); - } - - return len; + return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p); } static int wan_write(char *buf) { - char *cmd; - int state = -1; - - if (!tp_features.wan) - return -ENODEV; - - while ((cmd = next_cmd(&buf))) { - if (strlencmp(cmd, "enable") == 0) { - state = 1; - } else if (strlencmp(cmd, "disable") == 0) { - state = 0; - } else - return -EINVAL; - } - - if (state != -1) { - tpacpi_disclose_usertask("procfs wan", - "attempt to %s\n", - state ? "enable" : "disable"); - wan_set_radiosw(state, 1); - } - - return 0; + return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); } static struct ibm_struct wan_driver_data = { @@ -3672,108 +3755,59 @@ enum { #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" -static struct rfkill *tpacpi_uwb_rfkill; - -static int uwb_get_radiosw(void) +static int uwb_get_status(void) { int status; - if (!tp_features.uwb) - return -ENODEV; - - /* WLSW overrides UWB in firmware/hardware, reflect that */ - if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status) - return RFKILL_STATE_HARD_BLOCKED; - #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_uwbemul) return (tpacpi_uwb_emulstate) ? - RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; + TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; #endif if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) return -EIO; return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? - RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; + TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; } -static void uwb_update_rfk(void) +static int uwb_set_status(enum tpacpi_rfkill_state state) { int status; - if (!tpacpi_uwb_rfkill) - return; - - status = uwb_get_radiosw(); - if (status < 0) - return; - rfkill_force_state(tpacpi_uwb_rfkill, status); - vdbg_printk(TPACPI_DBG_RFKILL, - "forced rfkill state to %d\n", - status); -} - -static int uwb_set_radiosw(int radio_on, int update_rfk) -{ - int status; - - if (!tp_features.uwb) - return -ENODEV; - - /* WLSW overrides UWB in firmware/hardware, but there is no - * reason to risk weird behaviour. */ - if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status - && radio_on) - return -EPERM; - - vdbg_printk(TPACPI_DBG_RFKILL, - "will %s UWB\n", radio_on ? "enable" : "disable"); + "will attempt to %s UWB\n", + (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_uwbemul) { - tpacpi_uwb_emulstate = !!radio_on; - if (update_rfk) - uwb_update_rfk(); + tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); return 0; } #endif - status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0; + if (state == TPACPI_RFK_RADIO_ON) + status = TP_ACPI_UWB_RADIOSSW; + else + status = 0; + if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) return -EIO; - if (update_rfk) - uwb_update_rfk(); - return 0; } /* --------------------------------------------------------------------- */ -static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state) -{ - int uwbs = uwb_get_radiosw(); - - if (uwbs < 0) - return uwbs; - - *state = uwbs; - return 0; -} - -static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state) -{ - dbg_printk(TPACPI_DBG_RFKILL, - "request to change radio state to %d\n", state); - return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0); -} +static const struct tpacpi_rfk_ops uwb_tprfk_ops = { + .get_status = uwb_get_status, + .set_status = uwb_set_status, +}; static void uwb_exit(void) { - if (tpacpi_uwb_rfkill) - rfkill_unregister(tpacpi_uwb_rfkill); + tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); } static int __init uwb_init(struct ibm_init_struct *iibm) @@ -3813,13 +3847,10 @@ static int __init uwb_init(struct ibm_init_struct *iibm) return 1; res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, - &tpacpi_uwb_rfkill, + &uwb_tprfk_ops, RFKILL_TYPE_UWB, TPACPI_RFK_UWB_SW_NAME, - false, - tpacpi_uwb_rfk_set, - tpacpi_uwb_rfk_get); - + false); return res; } diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 4345089f5171..81d31ea507d1 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -45,7 +45,6 @@ #include #include #include -#include #include @@ -250,21 +249,15 @@ static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result) struct toshiba_acpi_dev { struct platform_device *p_dev; - struct rfkill *rfk_dev; - struct input_polled_dev *poll_dev; + struct rfkill *bt_rfk; const char *bt_name; - const char *rfk_name; - - bool last_rfk_state; struct mutex mutex; }; static struct toshiba_acpi_dev toshiba_acpi = { .bt_name = "Toshiba Bluetooth", - .rfk_name = "Toshiba RFKill Switch", - .last_rfk_state = false, }; /* Bluetooth rfkill handlers */ @@ -283,21 +276,6 @@ static u32 hci_get_bt_present(bool *present) return hci_result; } -static u32 hci_get_bt_on(bool *on) -{ - u32 hci_result; - u32 value, value2; - - value = 0; - value2 = 0x0001; - hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); - if (hci_result == HCI_SUCCESS) - *on = (value & HCI_WIRELESS_BT_POWER) && - (value & HCI_WIRELESS_BT_ATTACH); - - return hci_result; -} - static u32 hci_get_radio_state(bool *radio_state) { u32 hci_result; @@ -311,70 +289,67 @@ static u32 hci_get_radio_state(bool *radio_state) return hci_result; } -static int bt_rfkill_toggle_radio(void *data, enum rfkill_state state) +static int bt_rfkill_set_block(void *data, bool blocked) { + struct toshiba_acpi_dev *dev = data; u32 result1, result2; u32 value; + int err; bool radio_state; - struct toshiba_acpi_dev *dev = data; - value = (state == RFKILL_STATE_UNBLOCKED); + value = (blocked == false); - if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) - return -EFAULT; + mutex_lock(&dev->mutex); + if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) { + err = -EBUSY; + goto out; + } - switch (state) { - case RFKILL_STATE_UNBLOCKED: - if (!radio_state) - return -EPERM; - break; - case RFKILL_STATE_SOFT_BLOCKED: - break; - default: - return -EINVAL; + if (!radio_state) { + err = 0; + goto out; } - mutex_lock(&dev->mutex); hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1); hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2); - mutex_unlock(&dev->mutex); if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS) - return -EFAULT; - - return 0; + err = -EBUSY; + else + err = 0; + out: + mutex_unlock(&dev->mutex); + return err; } -static void bt_poll_rfkill(struct input_polled_dev *poll_dev) +static void bt_rfkill_poll(struct rfkill *rfkill, void *data) { - bool state_changed; bool new_rfk_state; bool value; u32 hci_result; - struct toshiba_acpi_dev *dev = poll_dev->private; + struct toshiba_acpi_dev *dev = data; + + mutex_lock(&dev->mutex); hci_result = hci_get_radio_state(&value); - if (hci_result != HCI_SUCCESS) - return; /* Can't do anything useful */ + if (hci_result != HCI_SUCCESS) { + /* Can't do anything useful */ + mutex_unlock(&dev->mutex); + } new_rfk_state = value; - mutex_lock(&dev->mutex); - state_changed = new_rfk_state != dev->last_rfk_state; - dev->last_rfk_state = new_rfk_state; mutex_unlock(&dev->mutex); - if (unlikely(state_changed)) { - rfkill_force_state(dev->rfk_dev, - new_rfk_state ? - RFKILL_STATE_SOFT_BLOCKED : - RFKILL_STATE_HARD_BLOCKED); - input_report_switch(poll_dev->input, SW_RFKILL_ALL, - new_rfk_state); - input_sync(poll_dev->input); - } + if (rfkill_set_hw_state(rfkill, !new_rfk_state)) + bt_rfkill_set_block(data, true); } +static const struct rfkill_ops toshiba_rfk_ops = { + .set_block = bt_rfkill_set_block, + .poll = bt_rfkill_poll, +}; + static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ; static struct backlight_device *toshiba_backlight_device; static int force_fan; @@ -702,14 +677,11 @@ static struct backlight_ops toshiba_backlight_data = { static void toshiba_acpi_exit(void) { - if (toshiba_acpi.poll_dev) { - input_unregister_polled_device(toshiba_acpi.poll_dev); - input_free_polled_device(toshiba_acpi.poll_dev); + if (toshiba_acpi.bt_rfk) { + rfkill_unregister(toshiba_acpi.bt_rfk); + rfkill_destroy(toshiba_acpi.bt_rfk); } - if (toshiba_acpi.rfk_dev) - rfkill_unregister(toshiba_acpi.rfk_dev); - if (toshiba_backlight_device) backlight_device_unregister(toshiba_backlight_device); @@ -728,8 +700,6 @@ static int __init toshiba_acpi_init(void) acpi_status status = AE_OK; u32 hci_result; bool bt_present; - bool bt_on; - bool radio_on; int ret = 0; if (acpi_disabled) @@ -793,60 +763,21 @@ static int __init toshiba_acpi_init(void) /* Register rfkill switch for Bluetooth */ if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) { - toshiba_acpi.rfk_dev = rfkill_allocate(&toshiba_acpi.p_dev->dev, - RFKILL_TYPE_BLUETOOTH); - if (!toshiba_acpi.rfk_dev) { + toshiba_acpi.bt_rfk = rfkill_alloc(toshiba_acpi.bt_name, + &toshiba_acpi.p_dev->dev, + RFKILL_TYPE_BLUETOOTH, + &toshiba_rfk_ops, + &toshiba_acpi); + if (!toshiba_acpi.bt_rfk) { printk(MY_ERR "unable to allocate rfkill device\n"); toshiba_acpi_exit(); return -ENOMEM; } - toshiba_acpi.rfk_dev->name = toshiba_acpi.bt_name; - toshiba_acpi.rfk_dev->toggle_radio = bt_rfkill_toggle_radio; - toshiba_acpi.rfk_dev->data = &toshiba_acpi; - - if (hci_get_bt_on(&bt_on) == HCI_SUCCESS && bt_on) { - toshiba_acpi.rfk_dev->state = RFKILL_STATE_UNBLOCKED; - } else if (hci_get_radio_state(&radio_on) == HCI_SUCCESS && - radio_on) { - toshiba_acpi.rfk_dev->state = RFKILL_STATE_SOFT_BLOCKED; - } else { - toshiba_acpi.rfk_dev->state = RFKILL_STATE_HARD_BLOCKED; - } - - ret = rfkill_register(toshiba_acpi.rfk_dev); + ret = rfkill_register(toshiba_acpi.bt_rfk); if (ret) { printk(MY_ERR "unable to register rfkill device\n"); - toshiba_acpi_exit(); - return -ENOMEM; - } - - /* Register input device for kill switch */ - toshiba_acpi.poll_dev = input_allocate_polled_device(); - if (!toshiba_acpi.poll_dev) { - printk(MY_ERR - "unable to allocate kill-switch input device\n"); - toshiba_acpi_exit(); - return -ENOMEM; - } - toshiba_acpi.poll_dev->private = &toshiba_acpi; - toshiba_acpi.poll_dev->poll = bt_poll_rfkill; - toshiba_acpi.poll_dev->poll_interval = 1000; /* msecs */ - - toshiba_acpi.poll_dev->input->name = toshiba_acpi.rfk_name; - toshiba_acpi.poll_dev->input->id.bustype = BUS_HOST; - /* Toshiba USB ID */ - toshiba_acpi.poll_dev->input->id.vendor = 0x0930; - set_bit(EV_SW, toshiba_acpi.poll_dev->input->evbit); - set_bit(SW_RFKILL_ALL, toshiba_acpi.poll_dev->input->swbit); - input_report_switch(toshiba_acpi.poll_dev->input, - SW_RFKILL_ALL, TRUE); - input_sync(toshiba_acpi.poll_dev->input); - - ret = input_register_polled_device(toshiba_acpi.poll_dev); - if (ret) { - printk(MY_ERR - "unable to register kill-switch input device\n"); + rfkill_destroy(toshiba_acpi.bt_rfk); toshiba_acpi_exit(); return ret; } diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 3f0eaa397ef5..7e09c5c1ed02 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -311,6 +311,7 @@ unifdef-y += ptrace.h unifdef-y += qnx4_fs.h unifdef-y += quota.h unifdef-y += random.h +unifdef-y += rfkill.h unifdef-y += irqnr.h unifdef-y += reboot.h unifdef-y += reiserfs_fs.h diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h index de18ef227e00..090852c8de7a 100644 --- a/include/linux/rfkill.h +++ b/include/linux/rfkill.h @@ -4,6 +4,7 @@ /* * Copyright (C) 2006 - 2007 Ivo van Doorn * Copyright (C) 2007 Dmitry Torokhov + * Copyright 2009 Johannes Berg * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -21,6 +22,24 @@ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* define userspace visible states */ +#define RFKILL_STATE_SOFT_BLOCKED 0 +#define RFKILL_STATE_UNBLOCKED 1 +#define RFKILL_STATE_HARD_BLOCKED 2 + +/* and that's all userspace gets */ +#ifdef __KERNEL__ +/* don't allow anyone to use these in the kernel */ +enum rfkill_user_states { + RFKILL_USER_STATE_SOFT_BLOCKED = RFKILL_STATE_SOFT_BLOCKED, + RFKILL_USER_STATE_UNBLOCKED = RFKILL_STATE_UNBLOCKED, + RFKILL_USER_STATE_HARD_BLOCKED = RFKILL_STATE_HARD_BLOCKED, +}; +#undef RFKILL_STATE_SOFT_BLOCKED +#undef RFKILL_STATE_UNBLOCKED +#undef RFKILL_STATE_HARD_BLOCKED + #include #include #include @@ -30,109 +49,267 @@ /** * enum rfkill_type - type of rfkill switch. - * RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device. - * RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device. - * RFKILL_TYPE_UWB: switch is on a ultra wideband device. - * RFKILL_TYPE_WIMAX: switch is on a WiMAX device. - * RFKILL_TYPE_WWAN: switch is on a wireless WAN device. + * + * @RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device. + * @RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device. + * @RFKILL_TYPE_UWB: switch is on a ultra wideband device. + * @RFKILL_TYPE_WIMAX: switch is on a WiMAX device. + * @RFKILL_TYPE_WWAN: switch is on a wireless WAN device. + * @NUM_RFKILL_TYPES: number of defined rfkill types */ enum rfkill_type { - RFKILL_TYPE_WLAN , + RFKILL_TYPE_WLAN, RFKILL_TYPE_BLUETOOTH, RFKILL_TYPE_UWB, RFKILL_TYPE_WIMAX, RFKILL_TYPE_WWAN, - RFKILL_TYPE_MAX, + NUM_RFKILL_TYPES, }; -enum rfkill_state { - RFKILL_STATE_SOFT_BLOCKED = 0, /* Radio output blocked */ - RFKILL_STATE_UNBLOCKED = 1, /* Radio output allowed */ - RFKILL_STATE_HARD_BLOCKED = 2, /* Output blocked, non-overrideable */ - RFKILL_STATE_MAX, /* marker for last valid state */ +/* this is opaque */ +struct rfkill; + +/** + * struct rfkill_ops - rfkill driver methods + * + * @poll: poll the rfkill block state(s) -- only assign this method + * when you need polling. When called, simply call one of the + * rfkill_set{,_hw,_sw}_state family of functions. If the hw + * is getting unblocked you need to take into account the return + * value of those functions to make sure the software block is + * properly used. + * @query: query the rfkill block state(s) and call exactly one of the + * rfkill_set{,_hw,_sw}_state family of functions. Assign this + * method if input events can cause hardware state changes to make + * the rfkill core query your driver before setting a requested + * block. + * @set_block: turn the transmitter on (blocked == false) or off + * (blocked == true) -- this is called only while the transmitter + * is not hard-blocked, but note that the core's view of whether + * the transmitter is hard-blocked might differ from your driver's + * view due to race conditions, so it is possible that it is still + * called at the same time as you are calling rfkill_set_hw_state(). + * This callback must be assigned. + */ +struct rfkill_ops { + void (*poll)(struct rfkill *rfkill, void *data); + void (*query)(struct rfkill *rfkill, void *data); + int (*set_block)(void *data, bool blocked); }; +#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) /** - * struct rfkill - rfkill control structure. - * @name: Name of the switch. - * @type: Radio type which the button controls, the value stored - * here should be a value from enum rfkill_type. - * @state: State of the switch, "UNBLOCKED" means radio can operate. - * @mutex: Guards switch state transitions. It serializes callbacks - * and also protects the state. - * @data: Pointer to the RF button drivers private data which will be - * passed along when toggling radio state. - * @toggle_radio(): Mandatory handler to control state of the radio. - * only RFKILL_STATE_SOFT_BLOCKED and RFKILL_STATE_UNBLOCKED are - * valid parameters. - * @get_state(): handler to read current radio state from hardware, - * may be called from atomic context, should return 0 on success. - * Either this handler OR judicious use of rfkill_force_state() is - * MANDATORY for any driver capable of RFKILL_STATE_HARD_BLOCKED. - * @led_trigger: A LED trigger for this button's LED. - * @dev: Device structure integrating the switch into device tree. - * @node: Used to place switch into list of all switches known to the - * the system. - * - * This structure represents a RF switch located on a network device. + * rfkill_alloc - allocate rfkill structure + * @name: name of the struct -- the string is not copied internally + * @parent: device that has rf switch on it + * @type: type of the switch (RFKILL_TYPE_*) + * @ops: rfkill methods + * @ops_data: data passed to each method + * + * This function should be called by the transmitter driver to allocate an + * rfkill structure. Returns %NULL on failure. */ -struct rfkill { - const char *name; - enum rfkill_type type; - - /* the mutex serializes callbacks and also protects - * the state */ - struct mutex mutex; - enum rfkill_state state; - void *data; - int (*toggle_radio)(void *data, enum rfkill_state state); - int (*get_state)(void *data, enum rfkill_state *state); +struct rfkill * __must_check rfkill_alloc(const char *name, + struct device *parent, + const enum rfkill_type type, + const struct rfkill_ops *ops, + void *ops_data); -#ifdef CONFIG_RFKILL_LEDS - struct led_trigger led_trigger; -#endif +/** + * rfkill_register - Register a rfkill structure. + * @rfkill: rfkill structure to be registered + * + * This function should be called by the transmitter driver to register + * the rfkill structure needs to be registered. Before calling this function + * the driver needs to be ready to service method calls from rfkill. + */ +int __must_check rfkill_register(struct rfkill *rfkill); - struct device dev; - struct list_head node; - enum rfkill_state state_for_resume; -}; -#define to_rfkill(d) container_of(d, struct rfkill, dev) +/** + * rfkill_pause_polling(struct rfkill *rfkill) + * + * Pause polling -- say transmitter is off for other reasons. + * NOTE: not necessary for suspend/resume -- in that case the + * core stops polling anyway + */ +void rfkill_pause_polling(struct rfkill *rfkill); -struct rfkill * __must_check rfkill_allocate(struct device *parent, - enum rfkill_type type); -void rfkill_free(struct rfkill *rfkill); -int __must_check rfkill_register(struct rfkill *rfkill); +/** + * rfkill_resume_polling(struct rfkill *rfkill) + * + * Pause polling -- say transmitter is off for other reasons. + * NOTE: not necessary for suspend/resume -- in that case the + * core stops polling anyway + */ +void rfkill_resume_polling(struct rfkill *rfkill); + + +/** + * rfkill_unregister - Unregister a rfkill structure. + * @rfkill: rfkill structure to be unregistered + * + * This function should be called by the network driver during device + * teardown to destroy rfkill structure. Until it returns, the driver + * needs to be able to service method calls. + */ void rfkill_unregister(struct rfkill *rfkill); -int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state); -int rfkill_set_default(enum rfkill_type type, enum rfkill_state state); +/** + * rfkill_destroy - free rfkill structure + * @rfkill: rfkill structure to be destroyed + * + * Destroys the rfkill structure. + */ +void rfkill_destroy(struct rfkill *rfkill); + +/** + * rfkill_set_hw_state - Set the internal rfkill hardware block state + * @rfkill: pointer to the rfkill class to modify. + * @state: the current hardware block state to set + * + * rfkill drivers that get events when the hard-blocked state changes + * use this function to notify the rfkill core (and through that also + * userspace) of the current state -- they should also use this after + * resume if the state could have changed. + * + * You need not (but may) call this function if poll_state is assigned. + * + * This function can be called in any context, even from within rfkill + * callbacks. + * + * The function returns the combined block state (true if transmitter + * should be blocked) so that drivers need not keep track of the soft + * block state -- which they might not be able to. + */ +bool __must_check rfkill_set_hw_state(struct rfkill *rfkill, bool blocked); + +/** + * rfkill_set_sw_state - Set the internal rfkill software block state + * @rfkill: pointer to the rfkill class to modify. + * @state: the current software block state to set + * + * rfkill drivers that get events when the soft-blocked state changes + * (yes, some platforms directly act on input but allow changing again) + * use this function to notify the rfkill core (and through that also + * userspace) of the current state -- they should also use this after + * resume if the state could have changed. + * + * This function can be called in any context, even from within rfkill + * callbacks. + * + * The function returns the combined block state (true if transmitter + * should be blocked). + */ +bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked); + +/** + * rfkill_set_states - Set the internal rfkill block states + * @rfkill: pointer to the rfkill class to modify. + * @sw: the current software block state to set + * @hw: the current hardware block state to set + * + * This function can be called in any context, even from within rfkill + * callbacks. + */ +void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw); /** - * rfkill_state_complement - return complementar state - * @state: state to return the complement of + * rfkill_set_global_sw_state - set global sw block default + * @type: rfkill type to set default for + * @blocked: default to set * - * Returns RFKILL_STATE_SOFT_BLOCKED if @state is RFKILL_STATE_UNBLOCKED, - * returns RFKILL_STATE_UNBLOCKED otherwise. + * This function sets the global default -- use at boot if your platform has + * an rfkill switch. If not early enough this call may be ignored. + * + * XXX: instead of ignoring -- how about just updating all currently + * registered drivers? */ -static inline enum rfkill_state rfkill_state_complement(enum rfkill_state state) +void rfkill_set_global_sw_state(const enum rfkill_type type, bool blocked); +#else /* !RFKILL */ +static inline struct rfkill * __must_check +rfkill_alloc(const char *name, + struct device *parent, + const enum rfkill_type type, + const struct rfkill_ops *ops, + void *ops_data) +{ + return ERR_PTR(-ENODEV); +} + +static inline int __must_check rfkill_register(struct rfkill *rfkill) +{ + if (rfkill == ERR_PTR(-ENODEV)) + return 0; + return -EINVAL; +} + +static inline void rfkill_pause_polling(struct rfkill *rfkill) +{ +} + +static inline void rfkill_resume_polling(struct rfkill *rfkill) +{ +} + +static inline void rfkill_unregister(struct rfkill *rfkill) +{ +} + +static inline void rfkill_destroy(struct rfkill *rfkill) +{ +} + +static inline bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked) +{ + return blocked; +} + +static inline bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked) +{ + return blocked; +} + +static inline void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw) +{ +} + +static inline void rfkill_set_global_sw_state(const enum rfkill_type type, + bool blocked) { - return (state == RFKILL_STATE_UNBLOCKED) ? - RFKILL_STATE_SOFT_BLOCKED : RFKILL_STATE_UNBLOCKED; } +#endif /* RFKILL || RFKILL_MODULE */ + +#ifdef CONFIG_RFKILL_LEDS /** - * rfkill_get_led_name - Get the LED trigger name for the button's LED. + * rfkill_get_led_trigger_name - Get the LED trigger name for the button's LED. * This function might return a NULL pointer if registering of the - * LED trigger failed. - * Use this as "default_trigger" for the LED. + * LED trigger failed. Use this as "default_trigger" for the LED. */ -static inline char *rfkill_get_led_name(struct rfkill *rfkill) -{ -#ifdef CONFIG_RFKILL_LEDS - return (char *)(rfkill->led_trigger.name); +const char *rfkill_get_led_trigger_name(struct rfkill *rfkill); + +/** + * rfkill_set_led_trigger_name -- set the LED trigger name + * @rfkill: rfkill struct + * @name: LED trigger name + * + * This function sets the LED trigger name of the radio LED + * trigger that rfkill creates. It is optional, but if called + * must be called before rfkill_register() to be effective. + */ +void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name); #else +static inline const char *rfkill_get_led_trigger_name(struct rfkill *rfkill) +{ return NULL; -#endif } +static inline void +rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name) +{ +} +#endif + +#endif /* __KERNEL__ */ + #endif /* RFKILL_H */ diff --git a/include/net/wimax.h b/include/net/wimax.h index 6b3824edb39e..2af7bf839f23 100644 --- a/include/net/wimax.h +++ b/include/net/wimax.h @@ -253,7 +253,6 @@ struct net_device; struct genl_info; struct wimax_dev; -struct input_dev; /** * struct wimax_dev - Generic WiMAX device @@ -293,8 +292,8 @@ struct input_dev; * See wimax_reset()'s documentation. * * @name: [fill] A way to identify this device. We need to register a - * name with many subsystems (input for RFKILL, workqueue - * creation, etc). We can't use the network device name as that + * name with many subsystems (rfkill, workqueue creation, etc). + * We can't use the network device name as that * might change and in some instances we don't know it yet (until * we don't call register_netdev()). So we generate an unique one * using the driver name and device bus id, place it here and use @@ -316,9 +315,6 @@ struct input_dev; * * @rfkill: [private] integration into the RF-Kill infrastructure. * - * @rfkill_input: [private] virtual input device to process the - * hardware RF Kill switches. - * * @rf_sw: [private] State of the software radio switch (OFF/ON) * * @rf_hw: [private] State of the hardware radio switch (OFF/ON) diff --git a/net/rfkill/Kconfig b/net/rfkill/Kconfig index 7f807b30cfbb..b47f72fae05d 100644 --- a/net/rfkill/Kconfig +++ b/net/rfkill/Kconfig @@ -10,22 +10,15 @@ menuconfig RFKILL To compile this driver as a module, choose M here: the module will be called rfkill. -config RFKILL_INPUT - tristate "Input layer to RF switch connector" - depends on RFKILL && INPUT - help - Say Y here if you want kernel automatically toggle state - of RF switches on and off when user presses appropriate - button or a key on the keyboard. Without this module you - need a some kind of userspace application to control - state of the switches. - - To compile this driver as a module, choose M here: the - module will be called rfkill-input. - # LED trigger support config RFKILL_LEDS bool - depends on RFKILL && LEDS_TRIGGERS + depends on RFKILL + depends on LEDS_TRIGGERS = y || RFKILL = LEDS_TRIGGERS default y +config RFKILL_INPUT + bool + depends on RFKILL + depends on INPUT = y || RFKILL = INPUT + default y diff --git a/net/rfkill/Makefile b/net/rfkill/Makefile index b38c430be057..662105352691 100644 --- a/net/rfkill/Makefile +++ b/net/rfkill/Makefile @@ -2,5 +2,6 @@ # Makefile for the RF switch subsystem. # -obj-$(CONFIG_RFKILL) += rfkill.o -obj-$(CONFIG_RFKILL_INPUT) += rfkill-input.o +rfkill-y += core.o +rfkill-$(CONFIG_RFKILL_INPUT) += input.o +obj-$(CONFIG_RFKILL) += rfkill.o diff --git a/net/rfkill/core.c b/net/rfkill/core.c new file mode 100644 index 000000000000..30a6f8d819b2 --- /dev/null +++ b/net/rfkill/core.c @@ -0,0 +1,896 @@ +/* + * Copyright (C) 2006 - 2007 Ivo van Doorn + * Copyright (C) 2007 Dmitry Torokhov + * Copyright 2009 Johannes Berg + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the + * Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "rfkill.h" + +#define POLL_INTERVAL (5 * HZ) + +#define RFKILL_BLOCK_HW BIT(0) +#define RFKILL_BLOCK_SW BIT(1) +#define RFKILL_BLOCK_SW_PREV BIT(2) +#define RFKILL_BLOCK_ANY (RFKILL_BLOCK_HW |\ + RFKILL_BLOCK_SW |\ + RFKILL_BLOCK_SW_PREV) +#define RFKILL_BLOCK_SW_SETCALL BIT(31) + +struct rfkill { + spinlock_t lock; + + const char *name; + enum rfkill_type type; + + unsigned long state; + + bool registered; + bool suspended; + + const struct rfkill_ops *ops; + void *data; + +#ifdef CONFIG_RFKILL_LEDS + struct led_trigger led_trigger; + const char *ledtrigname; +#endif + + struct device dev; + struct list_head node; + + struct delayed_work poll_work; + struct work_struct uevent_work; + struct work_struct sync_work; +}; +#define to_rfkill(d) container_of(d, struct rfkill, dev) + + + +MODULE_AUTHOR("Ivo van Doorn "); +MODULE_AUTHOR("Johannes Berg "); +MODULE_DESCRIPTION("RF switch support"); +MODULE_LICENSE("GPL"); + + +/* + * The locking here should be made much smarter, we currently have + * a bit of a stupid situation because drivers might want to register + * the rfkill struct under their own lock, and take this lock during + * rfkill method calls -- which will cause an AB-BA deadlock situation. + * + * To fix that, we need to rework this code here to be mostly lock-free + * and only use the mutex for list manipulations, not to protect the + * various other global variables. Then we can avoid holding the mutex + * around driver operations, and all is happy. + */ +static LIST_HEAD(rfkill_list); /* list of registered rf switches */ +static DEFINE_MUTEX(rfkill_global_mutex); + +static unsigned int rfkill_default_state = 1; +module_param_named(default_state, rfkill_default_state, uint, 0444); +MODULE_PARM_DESC(default_state, + "Default initial state for all radio types, 0 = radio off"); + +static struct { + bool cur, def; +} rfkill_global_states[NUM_RFKILL_TYPES]; + +static unsigned long rfkill_states_default_locked; + +static bool rfkill_epo_lock_active; + + +#ifdef CONFIG_RFKILL_LEDS +static void rfkill_led_trigger_event(struct rfkill *rfkill) +{ + struct led_trigger *trigger; + + if (!rfkill->registered) + return; + + trigger = &rfkill->led_trigger; + + if (rfkill->state & RFKILL_BLOCK_ANY) + led_trigger_event(trigger, LED_OFF); + else + led_trigger_event(trigger, LED_FULL); +} + +static void rfkill_led_trigger_activate(struct led_classdev *led) +{ + struct rfkill *rfkill; + + rfkill = container_of(led->trigger, struct rfkill, led_trigger); + + rfkill_led_trigger_event(rfkill); +} + +const char *rfkill_get_led_trigger_name(struct rfkill *rfkill) +{ + return rfkill->led_trigger.name; +} +EXPORT_SYMBOL(rfkill_get_led_trigger_name); + +void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name) +{ + BUG_ON(!rfkill); + + rfkill->ledtrigname = name; +} +EXPORT_SYMBOL(rfkill_set_led_trigger_name); + +static int rfkill_led_trigger_register(struct rfkill *rfkill) +{ + rfkill->led_trigger.name = rfkill->ledtrigname + ? : dev_name(&rfkill->dev); + rfkill->led_trigger.activate = rfkill_led_trigger_activate; + return led_trigger_register(&rfkill->led_trigger); +} + +static void rfkill_led_trigger_unregister(struct rfkill *rfkill) +{ + led_trigger_unregister(&rfkill->led_trigger); +} +#else +static void rfkill_led_trigger_event(struct rfkill *rfkill) +{ +} + +static inline int rfkill_led_trigger_register(struct rfkill *rfkill) +{ + return 0; +} + +static inline void rfkill_led_trigger_unregister(struct rfkill *rfkill) +{ +} +#endif /* CONFIG_RFKILL_LEDS */ + +static void rfkill_uevent(struct rfkill *rfkill) +{ + if (!rfkill->registered || rfkill->suspended) + return; + + kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE); +} + +static bool __rfkill_set_hw_state(struct rfkill *rfkill, + bool blocked, bool *change) +{ + unsigned long flags; + bool prev, any; + + BUG_ON(!rfkill); + + spin_lock_irqsave(&rfkill->lock, flags); + prev = !!(rfkill->state & RFKILL_BLOCK_HW); + if (blocked) + rfkill->state |= RFKILL_BLOCK_HW; + else + rfkill->state &= ~RFKILL_BLOCK_HW; + *change = prev != blocked; + any = rfkill->state & RFKILL_BLOCK_ANY; + spin_unlock_irqrestore(&rfkill->lock, flags); + + rfkill_led_trigger_event(rfkill); + + return any; +} + +/** + * rfkill_set_block - wrapper for set_block method + * + * @rfkill: the rfkill struct to use + * @blocked: the new software state + * + * Calls the set_block method (when applicable) and handles notifications + * etc. as well. + */ +static void rfkill_set_block(struct rfkill *rfkill, bool blocked) +{ + unsigned long flags; + int err; + + /* + * Some platforms (...!) generate input events which affect the + * _hard_ kill state -- whenever something tries to change the + * current software state query the hardware state too. + */ + if (rfkill->ops->query) + rfkill->ops->query(rfkill, rfkill->data); + + spin_lock_irqsave(&rfkill->lock, flags); + if (rfkill->state & RFKILL_BLOCK_SW) + rfkill->state |= RFKILL_BLOCK_SW_PREV; + else + rfkill->state &= ~RFKILL_BLOCK_SW_PREV; + + if (blocked) + rfkill->state |= RFKILL_BLOCK_SW; + else + rfkill->state &= ~RFKILL_BLOCK_SW; + + rfkill->state |= RFKILL_BLOCK_SW_SETCALL; + spin_unlock_irqrestore(&rfkill->lock, flags); + + if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP)) + return; + + err = rfkill->ops->set_block(rfkill->data, blocked); + + spin_lock_irqsave(&rfkill->lock, flags); + if (err) { + /* + * Failed -- reset status to _prev, this may be different + * from what set set _PREV to earlier in this function + * if rfkill_set_sw_state was invoked. + */ + if (rfkill->state & RFKILL_BLOCK_SW_PREV) + rfkill->state |= RFKILL_BLOCK_SW; + else + rfkill->state &= ~RFKILL_BLOCK_SW; + } + rfkill->state &= ~RFKILL_BLOCK_SW_SETCALL; + rfkill->state &= ~RFKILL_BLOCK_SW_PREV; + spin_unlock_irqrestore(&rfkill->lock, flags); + + rfkill_led_trigger_event(rfkill); + rfkill_uevent(rfkill); +} + +/** + * __rfkill_switch_all - Toggle state of all switches of given type + * @type: type of interfaces to be affected + * @state: the new state + * + * This function sets the state of all switches of given type, + * unless a specific switch is claimed by userspace (in which case, + * that switch is left alone) or suspended. + * + * Caller must have acquired rfkill_global_mutex. + */ +static void __rfkill_switch_all(const enum rfkill_type type, bool blocked) +{ + struct rfkill *rfkill; + + rfkill_global_states[type].cur = blocked; + list_for_each_entry(rfkill, &rfkill_list, node) { + if (rfkill->type != type) + continue; + + rfkill_set_block(rfkill, blocked); + } +} + +/** + * rfkill_switch_all - Toggle state of all switches of given type + * @type: type of interfaces to be affected + * @state: the new state + * + * Acquires rfkill_global_mutex and calls __rfkill_switch_all(@type, @state). + * Please refer to __rfkill_switch_all() for details. + * + * Does nothing if the EPO lock is active. + */ +void rfkill_switch_all(enum rfkill_type type, bool blocked) +{ + mutex_lock(&rfkill_global_mutex); + + if (!rfkill_epo_lock_active) + __rfkill_switch_all(type, blocked); + + mutex_unlock(&rfkill_global_mutex); +} + +/** + * rfkill_epo - emergency power off all transmitters + * + * This kicks all non-suspended rfkill devices to RFKILL_STATE_SOFT_BLOCKED, + * ignoring everything in its path but rfkill_global_mutex and rfkill->mutex. + * + * The global state before the EPO is saved and can be restored later + * using rfkill_restore_states(). + */ +void rfkill_epo(void) +{ + struct rfkill *rfkill; + int i; + + mutex_lock(&rfkill_global_mutex); + + rfkill_epo_lock_active = true; + list_for_each_entry(rfkill, &rfkill_list, node) + rfkill_set_block(rfkill, true); + + for (i = 0; i < NUM_RFKILL_TYPES; i++) { + rfkill_global_states[i].def = rfkill_global_states[i].cur; + rfkill_global_states[i].cur = true; + } + mutex_unlock(&rfkill_global_mutex); +} + +/** + * rfkill_restore_states - restore global states + * + * Restore (and sync switches to) the global state from the + * states in rfkill_default_states. This can undo the effects of + * a call to rfkill_epo(). + */ +void rfkill_restore_states(void) +{ + int i; + + mutex_lock(&rfkill_global_mutex); + + rfkill_epo_lock_active = false; + for (i = 0; i < NUM_RFKILL_TYPES; i++) + __rfkill_switch_all(i, rfkill_global_states[i].def); + mutex_unlock(&rfkill_global_mutex); +} + +/** + * rfkill_remove_epo_lock - unlock state changes + * + * Used by rfkill-input manually unlock state changes, when + * the EPO switch is deactivated. + */ +void rfkill_remove_epo_lock(void) +{ + mutex_lock(&rfkill_global_mutex); + rfkill_epo_lock_active = false; + mutex_unlock(&rfkill_global_mutex); +} + +/** + * rfkill_is_epo_lock_active - returns true EPO is active + * + * Returns 0 (false) if there is NOT an active EPO contidion, + * and 1 (true) if there is an active EPO contition, which + * locks all radios in one of the BLOCKED states. + * + * Can be called in atomic context. + */ +bool rfkill_is_epo_lock_active(void) +{ + return rfkill_epo_lock_active; +} + +/** + * rfkill_get_global_sw_state - returns global state for a type + * @type: the type to get the global state of + * + * Returns the current global state for a given wireless + * device type. + */ +bool rfkill_get_global_sw_state(const enum rfkill_type type) +{ + return rfkill_global_states[type].cur; +} + +void rfkill_set_global_sw_state(const enum rfkill_type type, bool blocked) +{ + mutex_lock(&rfkill_global_mutex); + + /* don't allow unblock when epo */ + if (rfkill_epo_lock_active && !blocked) + goto out; + + /* too late */ + if (rfkill_states_default_locked & BIT(type)) + goto out; + + rfkill_states_default_locked |= BIT(type); + + rfkill_global_states[type].cur = blocked; + rfkill_global_states[type].def = blocked; + out: + mutex_unlock(&rfkill_global_mutex); +} +EXPORT_SYMBOL(rfkill_set_global_sw_state); + + +bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked) +{ + bool ret, change; + + ret = __rfkill_set_hw_state(rfkill, blocked, &change); + + if (!rfkill->registered) + return ret; + + if (change) + schedule_work(&rfkill->uevent_work); + + return ret; +} +EXPORT_SYMBOL(rfkill_set_hw_state); + +static void __rfkill_set_sw_state(struct rfkill *rfkill, bool blocked) +{ + u32 bit = RFKILL_BLOCK_SW; + + /* if in a ops->set_block right now, use other bit */ + if (rfkill->state & RFKILL_BLOCK_SW_SETCALL) + bit = RFKILL_BLOCK_SW_PREV; + + if (blocked) + rfkill->state |= bit; + else + rfkill->state &= ~bit; +} + +bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked) +{ + unsigned long flags; + bool prev, hwblock; + + BUG_ON(!rfkill); + + spin_lock_irqsave(&rfkill->lock, flags); + prev = !!(rfkill->state & RFKILL_BLOCK_SW); + __rfkill_set_sw_state(rfkill, blocked); + hwblock = !!(rfkill->state & RFKILL_BLOCK_HW); + blocked = blocked || hwblock; + spin_unlock_irqrestore(&rfkill->lock, flags); + + if (!rfkill->registered) + return blocked; + + if (prev != blocked && !hwblock) + schedule_work(&rfkill->uevent_work); + + rfkill_led_trigger_event(rfkill); + + return blocked; +} +EXPORT_SYMBOL(rfkill_set_sw_state); + +void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw) +{ + unsigned long flags; + bool swprev, hwprev; + + BUG_ON(!rfkill); + + spin_lock_irqsave(&rfkill->lock, flags); + + /* + * No need to care about prev/setblock ... this is for uevent only + * and that will get triggered by rfkill_set_block anyway. + */ + swprev = !!(rfkill->state & RFKILL_BLOCK_SW); + hwprev = !!(rfkill->state & RFKILL_BLOCK_HW); + __rfkill_set_sw_state(rfkill, sw); + + spin_unlock_irqrestore(&rfkill->lock, flags); + + if (!rfkill->registered) + return; + + if (swprev != sw || hwprev != hw) + schedule_work(&rfkill->uevent_work); + + rfkill_led_trigger_event(rfkill); +} +EXPORT_SYMBOL(rfkill_set_states); + +static ssize_t rfkill_name_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct rfkill *rfkill = to_rfkill(dev); + + return sprintf(buf, "%s\n", rfkill->name); +} + +static const char *rfkill_get_type_str(enum rfkill_type type) +{ + switch (type) { + case RFKILL_TYPE_WLAN: + return "wlan"; + case RFKILL_TYPE_BLUETOOTH: + return "bluetooth"; + case RFKILL_TYPE_UWB: + return "ultrawideband"; + case RFKILL_TYPE_WIMAX: + return "wimax"; + case RFKILL_TYPE_WWAN: + return "wwan"; + default: + BUG(); + } + + BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_WWAN + 1); +} + +static ssize_t rfkill_type_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct rfkill *rfkill = to_rfkill(dev); + + return sprintf(buf, "%s\n", rfkill_get_type_str(rfkill->type)); +} + +static u8 user_state_from_blocked(unsigned long state) +{ + if (state & RFKILL_BLOCK_HW) + return RFKILL_USER_STATE_HARD_BLOCKED; + if (state & RFKILL_BLOCK_SW) + return RFKILL_USER_STATE_SOFT_BLOCKED; + + return RFKILL_USER_STATE_UNBLOCKED; +} + +static ssize_t rfkill_state_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct rfkill *rfkill = to_rfkill(dev); + unsigned long flags; + u32 state; + + spin_lock_irqsave(&rfkill->lock, flags); + state = rfkill->state; + spin_unlock_irqrestore(&rfkill->lock, flags); + + return sprintf(buf, "%d\n", user_state_from_blocked(state)); +} + +static ssize_t rfkill_state_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + /* + * The intention was that userspace can only take control over + * a given device when/if rfkill-input doesn't control it due + * to user_claim. Since user_claim is currently unsupported, + * we never support changing the state from userspace -- this + * can be implemented again later. + */ + + return -EPERM; +} + +static ssize_t rfkill_claim_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sprintf(buf, "%d\n", 0); +} + +static ssize_t rfkill_claim_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + return -EOPNOTSUPP; +} + +static struct device_attribute rfkill_dev_attrs[] = { + __ATTR(name, S_IRUGO, rfkill_name_show, NULL), + __ATTR(type, S_IRUGO, rfkill_type_show, NULL), + __ATTR(state, S_IRUGO|S_IWUSR, rfkill_state_show, rfkill_state_store), + __ATTR(claim, S_IRUGO|S_IWUSR, rfkill_claim_show, rfkill_claim_store), + __ATTR_NULL +}; + +static void rfkill_release(struct device *dev) +{ + struct rfkill *rfkill = to_rfkill(dev); + + kfree(rfkill); +} + +static int rfkill_dev_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct rfkill *rfkill = to_rfkill(dev); + unsigned long flags; + u32 state; + int error; + + error = add_uevent_var(env, "RFKILL_NAME=%s", rfkill->name); + if (error) + return error; + error = add_uevent_var(env, "RFKILL_TYPE=%s", + rfkill_get_type_str(rfkill->type)); + if (error) + return error; + spin_lock_irqsave(&rfkill->lock, flags); + state = rfkill->state; + spin_unlock_irqrestore(&rfkill->lock, flags); + error = add_uevent_var(env, "RFKILL_STATE=%d", + user_state_from_blocked(state)); + return error; +} + +void rfkill_pause_polling(struct rfkill *rfkill) +{ + BUG_ON(!rfkill); + + if (!rfkill->ops->poll) + return; + + cancel_delayed_work_sync(&rfkill->poll_work); +} +EXPORT_SYMBOL(rfkill_pause_polling); + +void rfkill_resume_polling(struct rfkill *rfkill) +{ + BUG_ON(!rfkill); + + if (!rfkill->ops->poll) + return; + + schedule_work(&rfkill->poll_work.work); +} +EXPORT_SYMBOL(rfkill_resume_polling); + +static int rfkill_suspend(struct device *dev, pm_message_t state) +{ + struct rfkill *rfkill = to_rfkill(dev); + + rfkill_pause_polling(rfkill); + + rfkill->suspended = true; + + return 0; +} + +static int rfkill_resume(struct device *dev) +{ + struct rfkill *rfkill = to_rfkill(dev); + bool cur; + + mutex_lock(&rfkill_global_mutex); + cur = rfkill_global_states[rfkill->type].cur; + rfkill_set_block(rfkill, cur); + mutex_unlock(&rfkill_global_mutex); + + rfkill->suspended = false; + + schedule_work(&rfkill->uevent_work); + + rfkill_resume_polling(rfkill); + + return 0; +} + +static struct class rfkill_class = { + .name = "rfkill", + .dev_release = rfkill_release, + .dev_attrs = rfkill_dev_attrs, + .dev_uevent = rfkill_dev_uevent, + .suspend = rfkill_suspend, + .resume = rfkill_resume, +}; + + +struct rfkill * __must_check rfkill_alloc(const char *name, + struct device *parent, + const enum rfkill_type type, + const struct rfkill_ops *ops, + void *ops_data) +{ + struct rfkill *rfkill; + struct device *dev; + + if (WARN_ON(!ops)) + return NULL; + + if (WARN_ON(!ops->set_block)) + return NULL; + + if (WARN_ON(!name)) + return NULL; + + if (WARN_ON(type >= NUM_RFKILL_TYPES)) + return NULL; + + rfkill = kzalloc(sizeof(*rfkill), GFP_KERNEL); + if (!rfkill) + return NULL; + + spin_lock_init(&rfkill->lock); + INIT_LIST_HEAD(&rfkill->node); + rfkill->type = type; + rfkill->name = name; + rfkill->ops = ops; + rfkill->data = ops_data; + + dev = &rfkill->dev; + dev->class = &rfkill_class; + dev->parent = parent; + device_initialize(dev); + + return rfkill; +} +EXPORT_SYMBOL(rfkill_alloc); + +static void rfkill_poll(struct work_struct *work) +{ + struct rfkill *rfkill; + + rfkill = container_of(work, struct rfkill, poll_work.work); + + /* + * Poll hardware state -- driver will use one of the + * rfkill_set{,_hw,_sw}_state functions and use its + * return value to update the current status. + */ + rfkill->ops->poll(rfkill, rfkill->data); + + schedule_delayed_work(&rfkill->poll_work, + round_jiffies_relative(POLL_INTERVAL)); +} + +static void rfkill_uevent_work(struct work_struct *work) +{ + struct rfkill *rfkill; + + rfkill = container_of(work, struct rfkill, uevent_work); + + rfkill_uevent(rfkill); +} + +static void rfkill_sync_work(struct work_struct *work) +{ + struct rfkill *rfkill; + bool cur; + + rfkill = container_of(work, struct rfkill, sync_work); + + mutex_lock(&rfkill_global_mutex); + cur = rfkill_global_states[rfkill->type].cur; + rfkill_set_block(rfkill, cur); + mutex_unlock(&rfkill_global_mutex); +} + +int __must_check rfkill_register(struct rfkill *rfkill) +{ + static unsigned long rfkill_no; + struct device *dev = &rfkill->dev; + int error; + + BUG_ON(!rfkill); + + mutex_lock(&rfkill_global_mutex); + + if (rfkill->registered) { + error = -EALREADY; + goto unlock; + } + + dev_set_name(dev, "rfkill%lu", rfkill_no); + rfkill_no++; + + if (!(rfkill_states_default_locked & BIT(rfkill->type))) { + /* first of its kind */ + BUILD_BUG_ON(NUM_RFKILL_TYPES > + sizeof(rfkill_states_default_locked) * 8); + rfkill_states_default_locked |= BIT(rfkill->type); + rfkill_global_states[rfkill->type].cur = + rfkill_global_states[rfkill->type].def; + } + + list_add_tail(&rfkill->node, &rfkill_list); + + error = device_add(dev); + if (error) + goto remove; + + error = rfkill_led_trigger_register(rfkill); + if (error) + goto devdel; + + rfkill->registered = true; + + if (rfkill->ops->poll) { + INIT_DELAYED_WORK(&rfkill->poll_work, rfkill_poll); + schedule_delayed_work(&rfkill->poll_work, + round_jiffies_relative(POLL_INTERVAL)); + } + + INIT_WORK(&rfkill->uevent_work, rfkill_uevent_work); + + INIT_WORK(&rfkill->sync_work, rfkill_sync_work); + schedule_work(&rfkill->sync_work); + + mutex_unlock(&rfkill_global_mutex); + return 0; + + devdel: + device_del(&rfkill->dev); + remove: + list_del_init(&rfkill->node); + unlock: + mutex_unlock(&rfkill_global_mutex); + return error; +} +EXPORT_SYMBOL(rfkill_register); + +void rfkill_unregister(struct rfkill *rfkill) +{ + BUG_ON(!rfkill); + + if (rfkill->ops->poll) + cancel_delayed_work_sync(&rfkill->poll_work); + + cancel_work_sync(&rfkill->uevent_work); + cancel_work_sync(&rfkill->sync_work); + + rfkill->registered = false; + + device_del(&rfkill->dev); + + mutex_lock(&rfkill_global_mutex); + list_del_init(&rfkill->node); + mutex_unlock(&rfkill_global_mutex); + + rfkill_led_trigger_unregister(rfkill); +} +EXPORT_SYMBOL(rfkill_unregister); + +void rfkill_destroy(struct rfkill *rfkill) +{ + if (rfkill) + put_device(&rfkill->dev); +} +EXPORT_SYMBOL(rfkill_destroy); + + +static int __init rfkill_init(void) +{ + int error; + int i; + + for (i = 0; i < NUM_RFKILL_TYPES; i++) + rfkill_global_states[i].def = !rfkill_default_state; + + error = class_register(&rfkill_class); + if (error) + goto out; + +#ifdef CONFIG_RFKILL_INPUT + error = rfkill_handler_init(); + if (error) + class_unregister(&rfkill_class); +#endif + + out: + return error; +} +subsys_initcall(rfkill_init); + +static void __exit rfkill_exit(void) +{ +#ifdef CONFIG_RFKILL_INPUT + rfkill_handler_exit(); +#endif + class_unregister(&rfkill_class); +} +module_exit(rfkill_exit); diff --git a/net/rfkill/input.c b/net/rfkill/input.c new file mode 100644 index 000000000000..a7295ad5f9cb --- /dev/null +++ b/net/rfkill/input.c @@ -0,0 +1,342 @@ +/* + * Input layer to RF Kill interface connector + * + * Copyright (c) 2007 Dmitry Torokhov + * Copyright 2009 Johannes Berg + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * If you ever run into a situation in which you have a SW_ type rfkill + * input device, then you can revive code that was removed in the patch + * "rfkill-input: remove unused code". + */ + +#include +#include +#include +#include +#include +#include + +#include "rfkill.h" + +enum rfkill_input_master_mode { + RFKILL_INPUT_MASTER_UNLOCK = 0, + RFKILL_INPUT_MASTER_RESTORE = 1, + RFKILL_INPUT_MASTER_UNBLOCKALL = 2, + NUM_RFKILL_INPUT_MASTER_MODES +}; + +/* Delay (in ms) between consecutive switch ops */ +#define RFKILL_OPS_DELAY 200 + +static enum rfkill_input_master_mode rfkill_master_switch_mode = + RFKILL_INPUT_MASTER_UNBLOCKALL; +module_param_named(master_switch_mode, rfkill_master_switch_mode, uint, 0); +MODULE_PARM_DESC(master_switch_mode, + "SW_RFKILL_ALL ON should: 0=do nothing (only unlock); 1=restore; 2=unblock all"); + +static spinlock_t rfkill_op_lock; +static bool rfkill_op_pending; +static unsigned long rfkill_sw_pending[BITS_TO_LONGS(NUM_RFKILL_TYPES)]; +static unsigned long rfkill_sw_state[BITS_TO_LONGS(NUM_RFKILL_TYPES)]; + +enum rfkill_sched_op { + RFKILL_GLOBAL_OP_EPO = 0, + RFKILL_GLOBAL_OP_RESTORE, + RFKILL_GLOBAL_OP_UNLOCK, + RFKILL_GLOBAL_OP_UNBLOCK, +}; + +static enum rfkill_sched_op rfkill_master_switch_op; +static enum rfkill_sched_op rfkill_op; + +static void __rfkill_handle_global_op(enum rfkill_sched_op op) +{ + unsigned int i; + + switch (op) { + case RFKILL_GLOBAL_OP_EPO: + rfkill_epo(); + break; + case RFKILL_GLOBAL_OP_RESTORE: + rfkill_restore_states(); + break; + case RFKILL_GLOBAL_OP_UNLOCK: + rfkill_remove_epo_lock(); + break; + case RFKILL_GLOBAL_OP_UNBLOCK: + rfkill_remove_epo_lock(); + for (i = 0; i < NUM_RFKILL_TYPES; i++) + rfkill_switch_all(i, false); + break; + default: + /* memory corruption or bug, fail safely */ + rfkill_epo(); + WARN(1, "Unknown requested operation %d! " + "rfkill Emergency Power Off activated\n", + op); + } +} + +static void __rfkill_handle_normal_op(const enum rfkill_type type, + const bool complement) +{ + bool blocked; + + blocked = rfkill_get_global_sw_state(type); + if (complement) + blocked = !blocked; + + rfkill_switch_all(type, blocked); +} + +static void rfkill_op_handler(struct work_struct *work) +{ + unsigned int i; + bool c; + + spin_lock_irq(&rfkill_op_lock); + do { + if (rfkill_op_pending) { + enum rfkill_sched_op op = rfkill_op; + rfkill_op_pending = false; + memset(rfkill_sw_pending, 0, + sizeof(rfkill_sw_pending)); + spin_unlock_irq(&rfkill_op_lock); + + __rfkill_handle_global_op(op); + + spin_lock_irq(&rfkill_op_lock); + + /* + * handle global ops first -- during unlocked period + * we might have gotten a new global op. + */ + if (rfkill_op_pending) + continue; + } + + if (rfkill_is_epo_lock_active()) + continue; + + for (i = 0; i < NUM_RFKILL_TYPES; i++) { + if (__test_and_clear_bit(i, rfkill_sw_pending)) { + c = __test_and_clear_bit(i, rfkill_sw_state); + spin_unlock_irq(&rfkill_op_lock); + + __rfkill_handle_normal_op(i, c); + + spin_lock_irq(&rfkill_op_lock); + } + } + } while (rfkill_op_pending); + spin_unlock_irq(&rfkill_op_lock); +} + +static DECLARE_DELAYED_WORK(rfkill_op_work, rfkill_op_handler); +static unsigned long rfkill_last_scheduled; + +static unsigned long rfkill_ratelimit(const unsigned long last) +{ + const unsigned long delay = msecs_to_jiffies(RFKILL_OPS_DELAY); + return (time_after(jiffies, last + delay)) ? 0 : delay; +} + +static void rfkill_schedule_ratelimited(void) +{ + if (delayed_work_pending(&rfkill_op_work)) + return; + schedule_delayed_work(&rfkill_op_work, + rfkill_ratelimit(rfkill_last_scheduled)); + rfkill_last_scheduled = jiffies; +} + +static void rfkill_schedule_global_op(enum rfkill_sched_op op) +{ + unsigned long flags; + + spin_lock_irqsave(&rfkill_op_lock, flags); + rfkill_op = op; + rfkill_op_pending = true; + if (op == RFKILL_GLOBAL_OP_EPO && !rfkill_is_epo_lock_active()) { + /* bypass the limiter for EPO */ + cancel_delayed_work(&rfkill_op_work); + schedule_delayed_work(&rfkill_op_work, 0); + rfkill_last_scheduled = jiffies; + } else + rfkill_schedule_ratelimited(); + spin_unlock_irqrestore(&rfkill_op_lock, flags); +} + +static void rfkill_schedule_toggle(enum rfkill_type type) +{ + unsigned long flags; + + if (rfkill_is_epo_lock_active()) + return; + + spin_lock_irqsave(&rfkill_op_lock, flags); + if (!rfkill_op_pending) { + __set_bit(type, rfkill_sw_pending); + __change_bit(type, rfkill_sw_state); + rfkill_schedule_ratelimited(); + } + spin_unlock_irqrestore(&rfkill_op_lock, flags); +} + +static void rfkill_schedule_evsw_rfkillall(int state) +{ + if (state) + rfkill_schedule_global_op(rfkill_master_switch_op); + else + rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO); +} + +static void rfkill_event(struct input_handle *handle, unsigned int type, + unsigned int code, int data) +{ + if (type == EV_KEY && data == 1) { + switch (code) { + case KEY_WLAN: + rfkill_schedule_toggle(RFKILL_TYPE_WLAN); + break; + case KEY_BLUETOOTH: + rfkill_schedule_toggle(RFKILL_TYPE_BLUETOOTH); + break; + case KEY_UWB: + rfkill_schedule_toggle(RFKILL_TYPE_UWB); + break; + case KEY_WIMAX: + rfkill_schedule_toggle(RFKILL_TYPE_WIMAX); + break; + } + } else if (type == EV_SW && code == SW_RFKILL_ALL) + rfkill_schedule_evsw_rfkillall(data); +} + +static int rfkill_connect(struct input_handler *handler, struct input_dev *dev, + const struct input_device_id *id) +{ + struct input_handle *handle; + int error; + + handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); + if (!handle) + return -ENOMEM; + + handle->dev = dev; + handle->handler = handler; + handle->name = "rfkill"; + + /* causes rfkill_start() to be called */ + error = input_register_handle(handle); + if (error) + goto err_free_handle; + + error = input_open_device(handle); + if (error) + goto err_unregister_handle; + + return 0; + + err_unregister_handle: + input_unregister_handle(handle); + err_free_handle: + kfree(handle); + return error; +} + +static void rfkill_start(struct input_handle *handle) +{ + /* + * Take event_lock to guard against configuration changes, we + * should be able to deal with concurrency with rfkill_event() + * just fine (which event_lock will also avoid). + */ + spin_lock_irq(&handle->dev->event_lock); + + if (test_bit(EV_SW, handle->dev->evbit) && + test_bit(SW_RFKILL_ALL, handle->dev->swbit)) + rfkill_schedule_evsw_rfkillall(test_bit(SW_RFKILL_ALL, + handle->dev->sw)); + + spin_unlock_irq(&handle->dev->event_lock); +} + +static void rfkill_disconnect(struct input_handle *handle) +{ + input_close_device(handle); + input_unregister_handle(handle); + kfree(handle); +} + +static const struct input_device_id rfkill_ids[] = { + { + .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, + .evbit = { BIT_MASK(EV_KEY) }, + .keybit = { [BIT_WORD(KEY_WLAN)] = BIT_MASK(KEY_WLAN) }, + }, + { + .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, + .evbit = { BIT_MASK(EV_KEY) }, + .keybit = { [BIT_WORD(KEY_BLUETOOTH)] = BIT_MASK(KEY_BLUETOOTH) }, + }, + { + .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, + .evbit = { BIT_MASK(EV_KEY) }, + .keybit = { [BIT_WORD(KEY_UWB)] = BIT_MASK(KEY_UWB) }, + }, + { + .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, + .evbit = { BIT_MASK(EV_KEY) }, + .keybit = { [BIT_WORD(KEY_WIMAX)] = BIT_MASK(KEY_WIMAX) }, + }, + { + .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_SWBIT, + .evbit = { BIT(EV_SW) }, + .swbit = { [BIT_WORD(SW_RFKILL_ALL)] = BIT_MASK(SW_RFKILL_ALL) }, + }, + { } +}; + +static struct input_handler rfkill_handler = { + .name = "rfkill", + .event = rfkill_event, + .connect = rfkill_connect, + .start = rfkill_start, + .disconnect = rfkill_disconnect, + .id_table = rfkill_ids, +}; + +int __init rfkill_handler_init(void) +{ + switch (rfkill_master_switch_mode) { + case RFKILL_INPUT_MASTER_UNBLOCKALL: + rfkill_master_switch_op = RFKILL_GLOBAL_OP_UNBLOCK; + break; + case RFKILL_INPUT_MASTER_RESTORE: + rfkill_master_switch_op = RFKILL_GLOBAL_OP_RESTORE; + break; + case RFKILL_INPUT_MASTER_UNLOCK: + rfkill_master_switch_op = RFKILL_GLOBAL_OP_UNLOCK; + break; + default: + return -EINVAL; + } + + spin_lock_init(&rfkill_op_lock); + + /* Avoid delay at first schedule */ + rfkill_last_scheduled = + jiffies - msecs_to_jiffies(RFKILL_OPS_DELAY) - 1; + return input_register_handler(&rfkill_handler); +} + +void __exit rfkill_handler_exit(void) +{ + input_unregister_handler(&rfkill_handler); + cancel_delayed_work_sync(&rfkill_op_work); +} diff --git a/net/rfkill/rfkill-input.c b/net/rfkill/rfkill-input.c deleted file mode 100644 index 60a34f3b5f65..000000000000 --- a/net/rfkill/rfkill-input.c +++ /dev/null @@ -1,390 +0,0 @@ -/* - * Input layer to RF Kill interface connector - * - * Copyright (c) 2007 Dmitry Torokhov - */ - -/* - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - */ - -#include -#include -#include -#include -#include -#include -#include - -#include "rfkill-input.h" - -MODULE_AUTHOR("Dmitry Torokhov "); -MODULE_DESCRIPTION("Input layer to RF switch connector"); -MODULE_LICENSE("GPL"); - -enum rfkill_input_master_mode { - RFKILL_INPUT_MASTER_DONOTHING = 0, - RFKILL_INPUT_MASTER_RESTORE = 1, - RFKILL_INPUT_MASTER_UNBLOCKALL = 2, - RFKILL_INPUT_MASTER_MAX, /* marker */ -}; - -/* Delay (in ms) between consecutive switch ops */ -#define RFKILL_OPS_DELAY 200 - -static enum rfkill_input_master_mode rfkill_master_switch_mode = - RFKILL_INPUT_MASTER_UNBLOCKALL; -module_param_named(master_switch_mode, rfkill_master_switch_mode, uint, 0); -MODULE_PARM_DESC(master_switch_mode, - "SW_RFKILL_ALL ON should: 0=do nothing; 1=restore; 2=unblock all"); - -enum rfkill_global_sched_op { - RFKILL_GLOBAL_OP_EPO = 0, - RFKILL_GLOBAL_OP_RESTORE, - RFKILL_GLOBAL_OP_UNLOCK, - RFKILL_GLOBAL_OP_UNBLOCK, -}; - -struct rfkill_task { - struct delayed_work dwork; - - /* ensures that task is serialized */ - struct mutex mutex; - - /* protects everything below */ - spinlock_t lock; - - /* pending regular switch operations (1=pending) */ - unsigned long sw_pending[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; - - /* should the state be complemented (1=yes) */ - unsigned long sw_togglestate[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; - - bool global_op_pending; - enum rfkill_global_sched_op op; - - /* last time it was scheduled */ - unsigned long last_scheduled; -}; - -static void __rfkill_handle_global_op(enum rfkill_global_sched_op op) -{ - unsigned int i; - - switch (op) { - case RFKILL_GLOBAL_OP_EPO: - rfkill_epo(); - break; - case RFKILL_GLOBAL_OP_RESTORE: - rfkill_restore_states(); - break; - case RFKILL_GLOBAL_OP_UNLOCK: - rfkill_remove_epo_lock(); - break; - case RFKILL_GLOBAL_OP_UNBLOCK: - rfkill_remove_epo_lock(); - for (i = 0; i < RFKILL_TYPE_MAX; i++) - rfkill_switch_all(i, RFKILL_STATE_UNBLOCKED); - break; - default: - /* memory corruption or bug, fail safely */ - rfkill_epo(); - WARN(1, "Unknown requested operation %d! " - "rfkill Emergency Power Off activated\n", - op); - } -} - -static void __rfkill_handle_normal_op(const enum rfkill_type type, - const bool c) -{ - enum rfkill_state state; - - state = rfkill_get_global_state(type); - if (c) - state = rfkill_state_complement(state); - - rfkill_switch_all(type, state); -} - -static void rfkill_task_handler(struct work_struct *work) -{ - struct rfkill_task *task = container_of(work, - struct rfkill_task, dwork.work); - bool doit = true; - - mutex_lock(&task->mutex); - - spin_lock_irq(&task->lock); - while (doit) { - if (task->global_op_pending) { - enum rfkill_global_sched_op op = task->op; - task->global_op_pending = false; - memset(task->sw_pending, 0, sizeof(task->sw_pending)); - spin_unlock_irq(&task->lock); - - __rfkill_handle_global_op(op); - - /* make sure we do at least one pass with - * !task->global_op_pending */ - spin_lock_irq(&task->lock); - continue; - } else if (!rfkill_is_epo_lock_active()) { - unsigned int i = 0; - - while (!task->global_op_pending && - i < RFKILL_TYPE_MAX) { - if (test_and_clear_bit(i, task->sw_pending)) { - bool c; - c = test_and_clear_bit(i, - task->sw_togglestate); - spin_unlock_irq(&task->lock); - - __rfkill_handle_normal_op(i, c); - - spin_lock_irq(&task->lock); - } - i++; - } - } - doit = task->global_op_pending; - } - spin_unlock_irq(&task->lock); - - mutex_unlock(&task->mutex); -} - -static struct rfkill_task rfkill_task = { - .dwork = __DELAYED_WORK_INITIALIZER(rfkill_task.dwork, - rfkill_task_handler), - .mutex = __MUTEX_INITIALIZER(rfkill_task.mutex), - .lock = __SPIN_LOCK_UNLOCKED(rfkill_task.lock), -}; - -static unsigned long rfkill_ratelimit(const unsigned long last) -{ - const unsigned long delay = msecs_to_jiffies(RFKILL_OPS_DELAY); - return (time_after(jiffies, last + delay)) ? 0 : delay; -} - -static void rfkill_schedule_ratelimited(void) -{ - if (!delayed_work_pending(&rfkill_task.dwork)) { - schedule_delayed_work(&rfkill_task.dwork, - rfkill_ratelimit(rfkill_task.last_scheduled)); - rfkill_task.last_scheduled = jiffies; - } -} - -static void rfkill_schedule_global_op(enum rfkill_global_sched_op op) -{ - unsigned long flags; - - spin_lock_irqsave(&rfkill_task.lock, flags); - rfkill_task.op = op; - rfkill_task.global_op_pending = true; - if (op == RFKILL_GLOBAL_OP_EPO && !rfkill_is_epo_lock_active()) { - /* bypass the limiter for EPO */ - cancel_delayed_work(&rfkill_task.dwork); - schedule_delayed_work(&rfkill_task.dwork, 0); - rfkill_task.last_scheduled = jiffies; - } else - rfkill_schedule_ratelimited(); - spin_unlock_irqrestore(&rfkill_task.lock, flags); -} - -static void rfkill_schedule_toggle(enum rfkill_type type) -{ - unsigned long flags; - - if (rfkill_is_epo_lock_active()) - return; - - spin_lock_irqsave(&rfkill_task.lock, flags); - if (!rfkill_task.global_op_pending) { - set_bit(type, rfkill_task.sw_pending); - change_bit(type, rfkill_task.sw_togglestate); - rfkill_schedule_ratelimited(); - } - spin_unlock_irqrestore(&rfkill_task.lock, flags); -} - -static void rfkill_schedule_evsw_rfkillall(int state) -{ - if (state) { - switch (rfkill_master_switch_mode) { - case RFKILL_INPUT_MASTER_UNBLOCKALL: - rfkill_schedule_global_op(RFKILL_GLOBAL_OP_UNBLOCK); - break; - case RFKILL_INPUT_MASTER_RESTORE: - rfkill_schedule_global_op(RFKILL_GLOBAL_OP_RESTORE); - break; - case RFKILL_INPUT_MASTER_DONOTHING: - rfkill_schedule_global_op(RFKILL_GLOBAL_OP_UNLOCK); - break; - default: - /* memory corruption or driver bug! fail safely */ - rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO); - WARN(1, "Unknown rfkill_master_switch_mode (%d), " - "driver bug or memory corruption detected!\n", - rfkill_master_switch_mode); - break; - } - } else - rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO); -} - -static void rfkill_event(struct input_handle *handle, unsigned int type, - unsigned int code, int data) -{ - if (type == EV_KEY && data == 1) { - enum rfkill_type t; - - switch (code) { - case KEY_WLAN: - t = RFKILL_TYPE_WLAN; - break; - case KEY_BLUETOOTH: - t = RFKILL_TYPE_BLUETOOTH; - break; - case KEY_UWB: - t = RFKILL_TYPE_UWB; - break; - case KEY_WIMAX: - t = RFKILL_TYPE_WIMAX; - break; - default: - return; - } - rfkill_schedule_toggle(t); - return; - } else if (type == EV_SW) { - switch (code) { - case SW_RFKILL_ALL: - rfkill_schedule_evsw_rfkillall(data); - return; - default: - return; - } - } -} - -static int rfkill_connect(struct input_handler *handler, struct input_dev *dev, - const struct input_device_id *id) -{ - struct input_handle *handle; - int error; - - handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); - if (!handle) - return -ENOMEM; - - handle->dev = dev; - handle->handler = handler; - handle->name = "rfkill"; - - /* causes rfkill_start() to be called */ - error = input_register_handle(handle); - if (error) - goto err_free_handle; - - error = input_open_device(handle); - if (error) - goto err_unregister_handle; - - return 0; - - err_unregister_handle: - input_unregister_handle(handle); - err_free_handle: - kfree(handle); - return error; -} - -static void rfkill_start(struct input_handle *handle) -{ - /* Take event_lock to guard against configuration changes, we - * should be able to deal with concurrency with rfkill_event() - * just fine (which event_lock will also avoid). */ - spin_lock_irq(&handle->dev->event_lock); - - if (test_bit(EV_SW, handle->dev->evbit)) { - if (test_bit(SW_RFKILL_ALL, handle->dev->swbit)) - rfkill_schedule_evsw_rfkillall(test_bit(SW_RFKILL_ALL, - handle->dev->sw)); - /* add resync for further EV_SW events here */ - } - - spin_unlock_irq(&handle->dev->event_lock); -} - -static void rfkill_disconnect(struct input_handle *handle) -{ - input_close_device(handle); - input_unregister_handle(handle); - kfree(handle); -} - -static const struct input_device_id rfkill_ids[] = { - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, - .evbit = { BIT_MASK(EV_KEY) }, - .keybit = { [BIT_WORD(KEY_WLAN)] = BIT_MASK(KEY_WLAN) }, - }, - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, - .evbit = { BIT_MASK(EV_KEY) }, - .keybit = { [BIT_WORD(KEY_BLUETOOTH)] = BIT_MASK(KEY_BLUETOOTH) }, - }, - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, - .evbit = { BIT_MASK(EV_KEY) }, - .keybit = { [BIT_WORD(KEY_UWB)] = BIT_MASK(KEY_UWB) }, - }, - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, - .evbit = { BIT_MASK(EV_KEY) }, - .keybit = { [BIT_WORD(KEY_WIMAX)] = BIT_MASK(KEY_WIMAX) }, - }, - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_SWBIT, - .evbit = { BIT(EV_SW) }, - .swbit = { [BIT_WORD(SW_RFKILL_ALL)] = BIT_MASK(SW_RFKILL_ALL) }, - }, - { } -}; - -static struct input_handler rfkill_handler = { - .event = rfkill_event, - .connect = rfkill_connect, - .disconnect = rfkill_disconnect, - .start = rfkill_start, - .name = "rfkill", - .id_table = rfkill_ids, -}; - -static int __init rfkill_handler_init(void) -{ - if (rfkill_master_switch_mode >= RFKILL_INPUT_MASTER_MAX) - return -EINVAL; - - /* - * The penalty to not doing this is a possible RFKILL_OPS_DELAY delay - * at the first use. Acceptable, but if we can avoid it, why not? - */ - rfkill_task.last_scheduled = - jiffies - msecs_to_jiffies(RFKILL_OPS_DELAY) - 1; - return input_register_handler(&rfkill_handler); -} - -static void __exit rfkill_handler_exit(void) -{ - input_unregister_handler(&rfkill_handler); - cancel_delayed_work_sync(&rfkill_task.dwork); - rfkill_remove_epo_lock(); -} - -module_init(rfkill_handler_init); -module_exit(rfkill_handler_exit); diff --git a/net/rfkill/rfkill-input.h b/net/rfkill/rfkill-input.h deleted file mode 100644 index fe8df6b5b935..000000000000 --- a/net/rfkill/rfkill-input.h +++ /dev/null @@ -1,21 +0,0 @@ -/* - * Copyright (C) 2007 Ivo van Doorn - */ - -/* - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - */ - -#ifndef __RFKILL_INPUT_H -#define __RFKILL_INPUT_H - -void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state); -void rfkill_epo(void); -void rfkill_restore_states(void); -void rfkill_remove_epo_lock(void); -bool rfkill_is_epo_lock_active(void); -enum rfkill_state rfkill_get_global_state(const enum rfkill_type type); - -#endif /* __RFKILL_INPUT_H */ diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c deleted file mode 100644 index 4f5a83183c95..000000000000 --- a/net/rfkill/rfkill.c +++ /dev/null @@ -1,855 +0,0 @@ -/* - * Copyright (C) 2006 - 2007 Ivo van Doorn - * Copyright (C) 2007 Dmitry Torokhov - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the - * Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -/* Get declaration of rfkill_switch_all() to shut up sparse. */ -#include "rfkill-input.h" - - -MODULE_AUTHOR("Ivo van Doorn "); -MODULE_VERSION("1.0"); -MODULE_DESCRIPTION("RF switch support"); -MODULE_LICENSE("GPL"); - -static LIST_HEAD(rfkill_list); /* list of registered rf switches */ -static DEFINE_MUTEX(rfkill_global_mutex); - -static unsigned int rfkill_default_state = RFKILL_STATE_UNBLOCKED; -module_param_named(default_state, rfkill_default_state, uint, 0444); -MODULE_PARM_DESC(default_state, - "Default initial state for all radio types, 0 = radio off"); - -struct rfkill_gsw_state { - enum rfkill_state current_state; - enum rfkill_state default_state; -}; - -static struct rfkill_gsw_state rfkill_global_states[RFKILL_TYPE_MAX]; -static unsigned long rfkill_states_lockdflt[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; -static bool rfkill_epo_lock_active; - - -#ifdef CONFIG_RFKILL_LEDS -static void rfkill_led_trigger(struct rfkill *rfkill, - enum rfkill_state state) -{ - struct led_trigger *led = &rfkill->led_trigger; - - if (!led->name) - return; - if (state != RFKILL_STATE_UNBLOCKED) - led_trigger_event(led, LED_OFF); - else - led_trigger_event(led, LED_FULL); -} - -static void rfkill_led_trigger_activate(struct led_classdev *led) -{ - struct rfkill *rfkill = container_of(led->trigger, - struct rfkill, led_trigger); - - rfkill_led_trigger(rfkill, rfkill->state); -} -#else -static inline void rfkill_led_trigger(struct rfkill *rfkill, - enum rfkill_state state) -{ -} -#endif /* CONFIG_RFKILL_LEDS */ - -static void rfkill_uevent(struct rfkill *rfkill) -{ - kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE); -} - -static void update_rfkill_state(struct rfkill *rfkill) -{ - enum rfkill_state newstate, oldstate; - - if (rfkill->get_state) { - mutex_lock(&rfkill->mutex); - if (!rfkill->get_state(rfkill->data, &newstate)) { - oldstate = rfkill->state; - rfkill->state = newstate; - if (oldstate != newstate) - rfkill_uevent(rfkill); - } - mutex_unlock(&rfkill->mutex); - } - rfkill_led_trigger(rfkill, rfkill->state); -} - -/** - * rfkill_toggle_radio - wrapper for toggle_radio hook - * @rfkill: the rfkill struct to use - * @force: calls toggle_radio even if cache says it is not needed, - * and also makes sure notifications of the state will be - * sent even if it didn't change - * @state: the new state to call toggle_radio() with - * - * Calls rfkill->toggle_radio, enforcing the API for toggle_radio - * calls and handling all the red tape such as issuing notifications - * if the call is successful. - * - * Suspended devices are not touched at all, and -EAGAIN is returned. - * - * Note that the @force parameter cannot override a (possibly cached) - * state of RFKILL_STATE_HARD_BLOCKED. Any device making use of - * RFKILL_STATE_HARD_BLOCKED implements either get_state() or - * rfkill_force_state(), so the cache either is bypassed or valid. - * - * Note that we do call toggle_radio for RFKILL_STATE_SOFT_BLOCKED - * even if the radio is in RFKILL_STATE_HARD_BLOCKED state, so as to - * give the driver a hint that it should double-BLOCK the transmitter. - * - * Caller must have acquired rfkill->mutex. - */ -static int rfkill_toggle_radio(struct rfkill *rfkill, - enum rfkill_state state, - int force) -{ - int retval = 0; - enum rfkill_state oldstate, newstate; - - if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP)) - return -EBUSY; - - oldstate = rfkill->state; - - if (rfkill->get_state && !force && - !rfkill->get_state(rfkill->data, &newstate)) { - rfkill->state = newstate; - } - - switch (state) { - case RFKILL_STATE_HARD_BLOCKED: - /* typically happens when refreshing hardware state, - * such as on resume */ - state = RFKILL_STATE_SOFT_BLOCKED; - break; - case RFKILL_STATE_UNBLOCKED: - /* force can't override this, only rfkill_force_state() can */ - if (rfkill->state == RFKILL_STATE_HARD_BLOCKED) - return -EPERM; - break; - case RFKILL_STATE_SOFT_BLOCKED: - /* nothing to do, we want to give drivers the hint to double - * BLOCK even a transmitter that is already in state - * RFKILL_STATE_HARD_BLOCKED */ - break; - default: - WARN(1, KERN_WARNING - "rfkill: illegal state %d passed as parameter " - "to rfkill_toggle_radio\n", state); - return -EINVAL; - } - - if (force || state != rfkill->state) { - retval = rfkill->toggle_radio(rfkill->data, state); - /* never allow a HARD->SOFT downgrade! */ - if (!retval && rfkill->state != RFKILL_STATE_HARD_BLOCKED) - rfkill->state = state; - } - - if (force || rfkill->state != oldstate) - rfkill_uevent(rfkill); - - rfkill_led_trigger(rfkill, rfkill->state); - return retval; -} - -/** - * __rfkill_switch_all - Toggle state of all switches of given type - * @type: type of interfaces to be affected - * @state: the new state - * - * This function toggles the state of all switches of given type, - * unless a specific switch is claimed by userspace (in which case, - * that switch is left alone) or suspended. - * - * Caller must have acquired rfkill_global_mutex. - */ -static void __rfkill_switch_all(const enum rfkill_type type, - const enum rfkill_state state) -{ - struct rfkill *rfkill; - - if (WARN((state >= RFKILL_STATE_MAX || type >= RFKILL_TYPE_MAX), - KERN_WARNING - "rfkill: illegal state %d or type %d " - "passed as parameter to __rfkill_switch_all\n", - state, type)) - return; - - rfkill_global_states[type].current_state = state; - list_for_each_entry(rfkill, &rfkill_list, node) { - if (rfkill->type == type) { - mutex_lock(&rfkill->mutex); - rfkill_toggle_radio(rfkill, state, 0); - mutex_unlock(&rfkill->mutex); - rfkill_led_trigger(rfkill, rfkill->state); - } - } -} - -/** - * rfkill_switch_all - Toggle state of all switches of given type - * @type: type of interfaces to be affected - * @state: the new state - * - * Acquires rfkill_global_mutex and calls __rfkill_switch_all(@type, @state). - * Please refer to __rfkill_switch_all() for details. - * - * Does nothing if the EPO lock is active. - */ -void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state) -{ - mutex_lock(&rfkill_global_mutex); - if (!rfkill_epo_lock_active) - __rfkill_switch_all(type, state); - mutex_unlock(&rfkill_global_mutex); -} -EXPORT_SYMBOL(rfkill_switch_all); - -/** - * rfkill_epo - emergency power off all transmitters - * - * This kicks all non-suspended rfkill devices to RFKILL_STATE_SOFT_BLOCKED, - * ignoring everything in its path but rfkill_global_mutex and rfkill->mutex. - * - * The global state before the EPO is saved and can be restored later - * using rfkill_restore_states(). - */ -void rfkill_epo(void) -{ - struct rfkill *rfkill; - int i; - - mutex_lock(&rfkill_global_mutex); - - rfkill_epo_lock_active = true; - list_for_each_entry(rfkill, &rfkill_list, node) { - mutex_lock(&rfkill->mutex); - rfkill_toggle_radio(rfkill, RFKILL_STATE_SOFT_BLOCKED, 1); - mutex_unlock(&rfkill->mutex); - } - for (i = 0; i < RFKILL_TYPE_MAX; i++) { - rfkill_global_states[i].default_state = - rfkill_global_states[i].current_state; - rfkill_global_states[i].current_state = - RFKILL_STATE_SOFT_BLOCKED; - } - mutex_unlock(&rfkill_global_mutex); - rfkill_led_trigger(rfkill, rfkill->state); -} -EXPORT_SYMBOL_GPL(rfkill_epo); - -/** - * rfkill_restore_states - restore global states - * - * Restore (and sync switches to) the global state from the - * states in rfkill_default_states. This can undo the effects of - * a call to rfkill_epo(). - */ -void rfkill_restore_states(void) -{ - int i; - - mutex_lock(&rfkill_global_mutex); - - rfkill_epo_lock_active = false; - for (i = 0; i < RFKILL_TYPE_MAX; i++) - __rfkill_switch_all(i, rfkill_global_states[i].default_state); - mutex_unlock(&rfkill_global_mutex); -} -EXPORT_SYMBOL_GPL(rfkill_restore_states); - -/** - * rfkill_remove_epo_lock - unlock state changes - * - * Used by rfkill-input manually unlock state changes, when - * the EPO switch is deactivated. - */ -void rfkill_remove_epo_lock(void) -{ - mutex_lock(&rfkill_global_mutex); - rfkill_epo_lock_active = false; - mutex_unlock(&rfkill_global_mutex); -} -EXPORT_SYMBOL_GPL(rfkill_remove_epo_lock); - -/** - * rfkill_is_epo_lock_active - returns true EPO is active - * - * Returns 0 (false) if there is NOT an active EPO contidion, - * and 1 (true) if there is an active EPO contition, which - * locks all radios in one of the BLOCKED states. - * - * Can be called in atomic context. - */ -bool rfkill_is_epo_lock_active(void) -{ - return rfkill_epo_lock_active; -} -EXPORT_SYMBOL_GPL(rfkill_is_epo_lock_active); - -/** - * rfkill_get_global_state - returns global state for a type - * @type: the type to get the global state of - * - * Returns the current global state for a given wireless - * device type. - */ -enum rfkill_state rfkill_get_global_state(const enum rfkill_type type) -{ - return rfkill_global_states[type].current_state; -} -EXPORT_SYMBOL_GPL(rfkill_get_global_state); - -/** - * rfkill_force_state - Force the internal rfkill radio state - * @rfkill: pointer to the rfkill class to modify. - * @state: the current radio state the class should be forced to. - * - * This function updates the internal state of the radio cached - * by the rfkill class. It should be used when the driver gets - * a notification by the firmware/hardware of the current *real* - * state of the radio rfkill switch. - * - * Devices which are subject to external changes on their rfkill - * state (such as those caused by a hardware rfkill line) MUST - * have their driver arrange to call rfkill_force_state() as soon - * as possible after such a change. - * - * This function may not be called from an atomic context. - */ -int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state) -{ - enum rfkill_state oldstate; - - BUG_ON(!rfkill); - if (WARN((state >= RFKILL_STATE_MAX), - KERN_WARNING - "rfkill: illegal state %d passed as parameter " - "to rfkill_force_state\n", state)) - return -EINVAL; - - mutex_lock(&rfkill->mutex); - - oldstate = rfkill->state; - rfkill->state = state; - - if (state != oldstate) - rfkill_uevent(rfkill); - - mutex_unlock(&rfkill->mutex); - rfkill_led_trigger(rfkill, rfkill->state); - - return 0; -} -EXPORT_SYMBOL(rfkill_force_state); - -static ssize_t rfkill_name_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct rfkill *rfkill = to_rfkill(dev); - - return sprintf(buf, "%s\n", rfkill->name); -} - -static const char *rfkill_get_type_str(enum rfkill_type type) -{ - switch (type) { - case RFKILL_TYPE_WLAN: - return "wlan"; - case RFKILL_TYPE_BLUETOOTH: - return "bluetooth"; - case RFKILL_TYPE_UWB: - return "ultrawideband"; - case RFKILL_TYPE_WIMAX: - return "wimax"; - case RFKILL_TYPE_WWAN: - return "wwan"; - default: - BUG(); - } -} - -static ssize_t rfkill_type_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct rfkill *rfkill = to_rfkill(dev); - - return sprintf(buf, "%s\n", rfkill_get_type_str(rfkill->type)); -} - -static ssize_t rfkill_state_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct rfkill *rfkill = to_rfkill(dev); - - update_rfkill_state(rfkill); - return sprintf(buf, "%d\n", rfkill->state); -} - -static ssize_t rfkill_state_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct rfkill *rfkill = to_rfkill(dev); - unsigned long state; - int error; - - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - - error = strict_strtoul(buf, 0, &state); - if (error) - return error; - - /* RFKILL_STATE_HARD_BLOCKED is illegal here... */ - if (state != RFKILL_STATE_UNBLOCKED && - state != RFKILL_STATE_SOFT_BLOCKED) - return -EINVAL; - - error = mutex_lock_killable(&rfkill->mutex); - if (error) - return error; - - if (!rfkill_epo_lock_active) - error = rfkill_toggle_radio(rfkill, state, 0); - else - error = -EPERM; - - mutex_unlock(&rfkill->mutex); - - return error ? error : count; -} - -static ssize_t rfkill_claim_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sprintf(buf, "%d\n", 0); -} - -static ssize_t rfkill_claim_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - return -EOPNOTSUPP; -} - -static struct device_attribute rfkill_dev_attrs[] = { - __ATTR(name, S_IRUGO, rfkill_name_show, NULL), - __ATTR(type, S_IRUGO, rfkill_type_show, NULL), - __ATTR(state, S_IRUGO|S_IWUSR, rfkill_state_show, rfkill_state_store), - __ATTR(claim, S_IRUGO|S_IWUSR, rfkill_claim_show, rfkill_claim_store), - __ATTR_NULL -}; - -static void rfkill_release(struct device *dev) -{ - struct rfkill *rfkill = to_rfkill(dev); - - kfree(rfkill); - module_put(THIS_MODULE); -} - -#ifdef CONFIG_PM -static int rfkill_suspend(struct device *dev, pm_message_t state) -{ - struct rfkill *rfkill = to_rfkill(dev); - - /* mark class device as suspended */ - if (dev->power.power_state.event != state.event) - dev->power.power_state = state; - - /* store state for the resume handler */ - rfkill->state_for_resume = rfkill->state; - - return 0; -} - -static int rfkill_resume(struct device *dev) -{ - struct rfkill *rfkill = to_rfkill(dev); - enum rfkill_state newstate; - - if (dev->power.power_state.event != PM_EVENT_ON) { - mutex_lock(&rfkill->mutex); - - dev->power.power_state.event = PM_EVENT_ON; - - /* - * rfkill->state could have been modified before we got - * called, and won't be updated by rfkill_toggle_radio() - * in force mode. Sync it FIRST. - */ - if (rfkill->get_state && - !rfkill->get_state(rfkill->data, &newstate)) - rfkill->state = newstate; - - /* - * If we are under EPO, kick transmitter offline, - * otherwise restore to pre-suspend state. - * - * Issue a notification in any case - */ - rfkill_toggle_radio(rfkill, - rfkill_epo_lock_active ? - RFKILL_STATE_SOFT_BLOCKED : - rfkill->state_for_resume, - 1); - - mutex_unlock(&rfkill->mutex); - rfkill_led_trigger(rfkill, rfkill->state); - } - - return 0; -} -#else -#define rfkill_suspend NULL -#define rfkill_resume NULL -#endif - -static int rfkill_dev_uevent(struct device *dev, struct kobj_uevent_env *env) -{ - struct rfkill *rfkill = to_rfkill(dev); - int error; - - error = add_uevent_var(env, "RFKILL_NAME=%s", rfkill->name); - if (error) - return error; - error = add_uevent_var(env, "RFKILL_TYPE=%s", - rfkill_get_type_str(rfkill->type)); - if (error) - return error; - error = add_uevent_var(env, "RFKILL_STATE=%d", rfkill->state); - return error; -} - -static struct class rfkill_class = { - .name = "rfkill", - .dev_release = rfkill_release, - .dev_attrs = rfkill_dev_attrs, - .suspend = rfkill_suspend, - .resume = rfkill_resume, - .dev_uevent = rfkill_dev_uevent, -}; - -static int rfkill_check_duplicity(const struct rfkill *rfkill) -{ - struct rfkill *p; - unsigned long seen[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; - - memset(seen, 0, sizeof(seen)); - - list_for_each_entry(p, &rfkill_list, node) { - if (WARN((p == rfkill), KERN_WARNING - "rfkill: illegal attempt to register " - "an already registered rfkill struct\n")) - return -EEXIST; - set_bit(p->type, seen); - } - - /* 0: first switch of its kind */ - return (test_bit(rfkill->type, seen)) ? 1 : 0; -} - -static int rfkill_add_switch(struct rfkill *rfkill) -{ - int error; - - mutex_lock(&rfkill_global_mutex); - - error = rfkill_check_duplicity(rfkill); - if (error < 0) - goto unlock_out; - - if (!error) { - /* lock default after first use */ - set_bit(rfkill->type, rfkill_states_lockdflt); - rfkill_global_states[rfkill->type].current_state = - rfkill_global_states[rfkill->type].default_state; - } - - rfkill_toggle_radio(rfkill, - rfkill_global_states[rfkill->type].current_state, - 0); - - list_add_tail(&rfkill->node, &rfkill_list); - - error = 0; -unlock_out: - mutex_unlock(&rfkill_global_mutex); - - return error; -} - -static void rfkill_remove_switch(struct rfkill *rfkill) -{ - mutex_lock(&rfkill_global_mutex); - list_del_init(&rfkill->node); - mutex_unlock(&rfkill_global_mutex); - - mutex_lock(&rfkill->mutex); - rfkill_toggle_radio(rfkill, RFKILL_STATE_SOFT_BLOCKED, 1); - mutex_unlock(&rfkill->mutex); -} - -/** - * rfkill_allocate - allocate memory for rfkill structure. - * @parent: device that has rf switch on it - * @type: type of the switch (RFKILL_TYPE_*) - * - * This function should be called by the network driver when it needs - * rfkill structure. Once the structure is allocated the driver should - * finish its initialization by setting the name, private data, enable_radio - * and disable_radio methods and then register it with rfkill_register(). - * - * NOTE: If registration fails the structure shoudl be freed by calling - * rfkill_free() otherwise rfkill_unregister() should be used. - */ -struct rfkill * __must_check rfkill_allocate(struct device *parent, - enum rfkill_type type) -{ - struct rfkill *rfkill; - struct device *dev; - - if (WARN((type >= RFKILL_TYPE_MAX), - KERN_WARNING - "rfkill: illegal type %d passed as parameter " - "to rfkill_allocate\n", type)) - return NULL; - - rfkill = kzalloc(sizeof(struct rfkill), GFP_KERNEL); - if (!rfkill) - return NULL; - - mutex_init(&rfkill->mutex); - INIT_LIST_HEAD(&rfkill->node); - rfkill->type = type; - - dev = &rfkill->dev; - dev->class = &rfkill_class; - dev->parent = parent; - device_initialize(dev); - - __module_get(THIS_MODULE); - - return rfkill; -} -EXPORT_SYMBOL(rfkill_allocate); - -/** - * rfkill_free - Mark rfkill structure for deletion - * @rfkill: rfkill structure to be destroyed - * - * Decrements reference count of the rfkill structure so it is destroyed. - * Note that rfkill_free() should _not_ be called after rfkill_unregister(). - */ -void rfkill_free(struct rfkill *rfkill) -{ - if (rfkill) - put_device(&rfkill->dev); -} -EXPORT_SYMBOL(rfkill_free); - -static void rfkill_led_trigger_register(struct rfkill *rfkill) -{ -#ifdef CONFIG_RFKILL_LEDS - int error; - - if (!rfkill->led_trigger.name) - rfkill->led_trigger.name = dev_name(&rfkill->dev); - if (!rfkill->led_trigger.activate) - rfkill->led_trigger.activate = rfkill_led_trigger_activate; - error = led_trigger_register(&rfkill->led_trigger); - if (error) - rfkill->led_trigger.name = NULL; -#endif /* CONFIG_RFKILL_LEDS */ -} - -static void rfkill_led_trigger_unregister(struct rfkill *rfkill) -{ -#ifdef CONFIG_RFKILL_LEDS - if (rfkill->led_trigger.name) { - led_trigger_unregister(&rfkill->led_trigger); - rfkill->led_trigger.name = NULL; - } -#endif -} - -/** - * rfkill_register - Register a rfkill structure. - * @rfkill: rfkill structure to be registered - * - * This function should be called by the network driver when the rfkill - * structure needs to be registered. Immediately from registration the - * switch driver should be able to service calls to toggle_radio. - */ -int __must_check rfkill_register(struct rfkill *rfkill) -{ - static atomic_t rfkill_no = ATOMIC_INIT(0); - struct device *dev = &rfkill->dev; - int error; - - if (WARN((!rfkill || !rfkill->toggle_radio || - rfkill->type >= RFKILL_TYPE_MAX || - rfkill->state >= RFKILL_STATE_MAX), - KERN_WARNING - "rfkill: attempt to register a " - "badly initialized rfkill struct\n")) - return -EINVAL; - - dev_set_name(dev, "rfkill%ld", (long)atomic_inc_return(&rfkill_no) - 1); - - rfkill_led_trigger_register(rfkill); - - error = rfkill_add_switch(rfkill); - if (error) { - rfkill_led_trigger_unregister(rfkill); - return error; - } - - error = device_add(dev); - if (error) { - rfkill_remove_switch(rfkill); - rfkill_led_trigger_unregister(rfkill); - return error; - } - - return 0; -} -EXPORT_SYMBOL(rfkill_register); - -/** - * rfkill_unregister - Unregister a rfkill structure. - * @rfkill: rfkill structure to be unregistered - * - * This function should be called by the network driver during device - * teardown to destroy rfkill structure. Note that rfkill_free() should - * _not_ be called after rfkill_unregister(). - */ -void rfkill_unregister(struct rfkill *rfkill) -{ - BUG_ON(!rfkill); - device_del(&rfkill->dev); - rfkill_remove_switch(rfkill); - rfkill_led_trigger_unregister(rfkill); - put_device(&rfkill->dev); -} -EXPORT_SYMBOL(rfkill_unregister); - -/** - * rfkill_set_default - set initial value for a switch type - * @type - the type of switch to set the default state of - * @state - the new default state for that group of switches - * - * Sets the initial state rfkill should use for a given type. - * The following initial states are allowed: RFKILL_STATE_SOFT_BLOCKED - * and RFKILL_STATE_UNBLOCKED. - * - * This function is meant to be used by platform drivers for platforms - * that can save switch state across power down/reboot. - * - * The default state for each switch type can be changed exactly once. - * After a switch of that type is registered, the default state cannot - * be changed anymore. This guards against multiple drivers it the - * same platform trying to set the initial switch default state, which - * is not allowed. - * - * Returns -EPERM if the state has already been set once or is in use, - * so drivers likely want to either ignore or at most printk(KERN_NOTICE) - * if this function returns -EPERM. - * - * Returns 0 if the new default state was set, or an error if it - * could not be set. - */ -int rfkill_set_default(enum rfkill_type type, enum rfkill_state state) -{ - int error; - - if (WARN((type >= RFKILL_TYPE_MAX || - (state != RFKILL_STATE_SOFT_BLOCKED && - state != RFKILL_STATE_UNBLOCKED)), - KERN_WARNING - "rfkill: illegal state %d or type %d passed as " - "parameter to rfkill_set_default\n", state, type)) - return -EINVAL; - - mutex_lock(&rfkill_global_mutex); - - if (!test_and_set_bit(type, rfkill_states_lockdflt)) { - rfkill_global_states[type].default_state = state; - rfkill_global_states[type].current_state = state; - error = 0; - } else - error = -EPERM; - - mutex_unlock(&rfkill_global_mutex); - return error; -} -EXPORT_SYMBOL_GPL(rfkill_set_default); - -/* - * Rfkill module initialization/deinitialization. - */ -static int __init rfkill_init(void) -{ - int error; - int i; - - /* RFKILL_STATE_HARD_BLOCKED is illegal here... */ - if (rfkill_default_state != RFKILL_STATE_SOFT_BLOCKED && - rfkill_default_state != RFKILL_STATE_UNBLOCKED) - return -EINVAL; - - for (i = 0; i < RFKILL_TYPE_MAX; i++) - rfkill_global_states[i].default_state = rfkill_default_state; - - error = class_register(&rfkill_class); - if (error) { - printk(KERN_ERR "rfkill: unable to register rfkill class\n"); - return error; - } - - return 0; -} - -static void __exit rfkill_exit(void) -{ - class_unregister(&rfkill_class); -} - -subsys_initcall(rfkill_init); -module_exit(rfkill_exit); diff --git a/net/rfkill/rfkill.h b/net/rfkill/rfkill.h new file mode 100644 index 000000000000..d1117cb6e4de --- /dev/null +++ b/net/rfkill/rfkill.h @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2007 Ivo van Doorn + * Copyright 2009 Johannes Berg + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef __RFKILL_INPUT_H +#define __RFKILL_INPUT_H + +/* core code */ +void rfkill_switch_all(const enum rfkill_type type, bool blocked); +void rfkill_epo(void); +void rfkill_restore_states(void); +void rfkill_remove_epo_lock(void); +bool rfkill_is_epo_lock_active(void); +bool rfkill_get_global_sw_state(const enum rfkill_type type); + +/* input handler */ +int rfkill_handler_init(void); +void rfkill_handler_exit(void); + +#endif /* __RFKILL_INPUT_H */ diff --git a/net/wimax/Kconfig b/net/wimax/Kconfig index 1b46747a5f5a..0bdbb6928205 100644 --- a/net/wimax/Kconfig +++ b/net/wimax/Kconfig @@ -1,23 +1,9 @@ # # WiMAX LAN device configuration # -# Note the ugly 'depends on' on WIMAX: that disallows RFKILL to be a -# module if WIMAX is to be linked in. The WiMAX code is done in such a -# way that it doesn't require and explicit dependency on RFKILL in -# case an embedded system wants to rip it out. -# -# As well, enablement of the RFKILL code means we need the INPUT layer -# support to inject events coming from hw rfkill switches. That -# dependency could be killed if input.h provided appropriate means to -# work when input is disabled. - -comment "WiMAX Wireless Broadband support requires CONFIG_INPUT enabled" - depends on INPUT = n && RFKILL != n menuconfig WIMAX tristate "WiMAX Wireless Broadband support" - depends on (y && RFKILL != m) || m - depends on (INPUT && RFKILL != n) || RFKILL = n help Select to configure support for devices that provide diff --git a/net/wimax/op-rfkill.c b/net/wimax/op-rfkill.c index a3616e2ccb8a..bb102e4aa3e9 100644 --- a/net/wimax/op-rfkill.c +++ b/net/wimax/op-rfkill.c @@ -29,8 +29,8 @@ * A non-polled generic rfkill device is embedded into the WiMAX * subsystem's representation of a device. * - * FIXME: Need polled support? use a timer or add the implementation - * to the stack. + * FIXME: Need polled support? Let drivers provide a poll routine + * and hand it to rfkill ops then? * * All device drivers have to do is after wimax_dev_init(), call * wimax_report_rfkill_hw() and wimax_report_rfkill_sw() to update @@ -43,7 +43,7 @@ * wimax_rfkill() Kernel calling wimax_rfkill() * __wimax_rf_toggle_radio() * - * wimax_rfkill_toggle_radio() RF-Kill subsytem calling + * wimax_rfkill_set_radio_block() RF-Kill subsytem calling * __wimax_rf_toggle_radio() * * __wimax_rf_toggle_radio() @@ -65,15 +65,11 @@ #include #include #include -#include #include "wimax-internal.h" #define D_SUBMODULE op_rfkill #include "debug-levels.h" -#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) - - /** * wimax_report_rfkill_hw - Reports changes in the hardware RF switch * @@ -99,7 +95,6 @@ void wimax_report_rfkill_hw(struct wimax_dev *wimax_dev, int result; struct device *dev = wimax_dev_to_dev(wimax_dev); enum wimax_st wimax_state; - enum rfkill_state rfkill_state; d_fnstart(3, dev, "(wimax_dev %p state %u)\n", wimax_dev, state); BUG_ON(state == WIMAX_RF_QUERY); @@ -112,16 +107,15 @@ void wimax_report_rfkill_hw(struct wimax_dev *wimax_dev, if (state != wimax_dev->rf_hw) { wimax_dev->rf_hw = state; - rfkill_state = state == WIMAX_RF_ON ? - RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; if (wimax_dev->rf_hw == WIMAX_RF_ON && wimax_dev->rf_sw == WIMAX_RF_ON) wimax_state = WIMAX_ST_READY; else wimax_state = WIMAX_ST_RADIO_OFF; + + rfkill_set_hw_state(wimax_dev->rfkill, state == WIMAX_RF_OFF); + __wimax_state_change(wimax_dev, wimax_state); - input_report_key(wimax_dev->rfkill_input, KEY_WIMAX, - rfkill_state); } error_not_ready: mutex_unlock(&wimax_dev->mutex); @@ -174,6 +168,7 @@ void wimax_report_rfkill_sw(struct wimax_dev *wimax_dev, else wimax_state = WIMAX_ST_RADIO_OFF; __wimax_state_change(wimax_dev, wimax_state); + rfkill_set_sw_state(wimax_dev->rfkill, state == WIMAX_RF_OFF); } error_not_ready: mutex_unlock(&wimax_dev->mutex); @@ -249,36 +244,31 @@ out_no_change: * * NOTE: This call will block until the operation is completed. */ -static -int wimax_rfkill_toggle_radio(void *data, enum rfkill_state state) +static int wimax_rfkill_set_radio_block(void *data, bool blocked) { int result; struct wimax_dev *wimax_dev = data; struct device *dev = wimax_dev_to_dev(wimax_dev); enum wimax_rf_state rf_state; - d_fnstart(3, dev, "(wimax_dev %p state %u)\n", wimax_dev, state); - switch (state) { - case RFKILL_STATE_SOFT_BLOCKED: + d_fnstart(3, dev, "(wimax_dev %p blocked %u)\n", wimax_dev, blocked); + rf_state = WIMAX_RF_ON; + if (blocked) rf_state = WIMAX_RF_OFF; - break; - case RFKILL_STATE_UNBLOCKED: - rf_state = WIMAX_RF_ON; - break; - default: - BUG(); - } mutex_lock(&wimax_dev->mutex); if (wimax_dev->state <= __WIMAX_ST_QUIESCING) - result = 0; /* just pretend it didn't happen */ + result = 0; else result = __wimax_rf_toggle_radio(wimax_dev, rf_state); mutex_unlock(&wimax_dev->mutex); - d_fnend(3, dev, "(wimax_dev %p state %u) = %d\n", - wimax_dev, state, result); + d_fnend(3, dev, "(wimax_dev %p blocked %u) = %d\n", + wimax_dev, blocked, result); return result; } +static const struct rfkill_ops wimax_rfkill_ops = { + .set_block = wimax_rfkill_set_radio_block, +}; /** * wimax_rfkill - Set the software RF switch state for a WiMAX device @@ -322,6 +312,7 @@ int wimax_rfkill(struct wimax_dev *wimax_dev, enum wimax_rf_state state) result = __wimax_rf_toggle_radio(wimax_dev, state); if (result < 0) goto error; + rfkill_set_sw_state(wimax_dev->rfkill, state == WIMAX_RF_OFF); break; case WIMAX_RF_QUERY: break; @@ -349,40 +340,20 @@ int wimax_rfkill_add(struct wimax_dev *wimax_dev) { int result; struct rfkill *rfkill; - struct input_dev *input_dev; struct device *dev = wimax_dev_to_dev(wimax_dev); d_fnstart(3, dev, "(wimax_dev %p)\n", wimax_dev); /* Initialize RF Kill */ result = -ENOMEM; - rfkill = rfkill_allocate(dev, RFKILL_TYPE_WIMAX); + rfkill = rfkill_alloc(wimax_dev->name, dev, RFKILL_TYPE_WIMAX, + &wimax_rfkill_ops, wimax_dev); if (rfkill == NULL) goto error_rfkill_allocate; + + d_printf(1, dev, "rfkill %p\n", rfkill); + wimax_dev->rfkill = rfkill; - rfkill->name = wimax_dev->name; - rfkill->state = RFKILL_STATE_UNBLOCKED; - rfkill->data = wimax_dev; - rfkill->toggle_radio = wimax_rfkill_toggle_radio; - - /* Initialize the input device for the hw key */ - input_dev = input_allocate_device(); - if (input_dev == NULL) - goto error_input_allocate; - wimax_dev->rfkill_input = input_dev; - d_printf(1, dev, "rfkill %p input %p\n", rfkill, input_dev); - - input_dev->name = wimax_dev->name; - /* FIXME: get a real device bus ID and stuff? do we care? */ - input_dev->id.bustype = BUS_HOST; - input_dev->id.vendor = 0xffff; - input_dev->evbit[0] = BIT(EV_KEY); - set_bit(KEY_WIMAX, input_dev->keybit); - - /* Register both */ - result = input_register_device(wimax_dev->rfkill_input); - if (result < 0) - goto error_input_register; result = rfkill_register(wimax_dev->rfkill); if (result < 0) goto error_rfkill_register; @@ -394,17 +365,8 @@ int wimax_rfkill_add(struct wimax_dev *wimax_dev) d_fnend(3, dev, "(wimax_dev %p) = 0\n", wimax_dev); return 0; - /* if rfkill_register() suceeds, can't use rfkill_free() any - * more, only rfkill_unregister() [it owns the refcount]; with - * the input device we have the same issue--hence the if. */ error_rfkill_register: - input_unregister_device(wimax_dev->rfkill_input); - wimax_dev->rfkill_input = NULL; -error_input_register: - if (wimax_dev->rfkill_input) - input_free_device(wimax_dev->rfkill_input); -error_input_allocate: - rfkill_free(wimax_dev->rfkill); + rfkill_destroy(wimax_dev->rfkill); error_rfkill_allocate: d_fnend(3, dev, "(wimax_dev %p) = %d\n", wimax_dev, result); return result; @@ -423,45 +385,12 @@ void wimax_rfkill_rm(struct wimax_dev *wimax_dev) { struct device *dev = wimax_dev_to_dev(wimax_dev); d_fnstart(3, dev, "(wimax_dev %p)\n", wimax_dev); - rfkill_unregister(wimax_dev->rfkill); /* frees */ - input_unregister_device(wimax_dev->rfkill_input); + rfkill_unregister(wimax_dev->rfkill); + rfkill_destroy(wimax_dev->rfkill); d_fnend(3, dev, "(wimax_dev %p)\n", wimax_dev); } -#else /* #ifdef CONFIG_RFKILL */ - -void wimax_report_rfkill_hw(struct wimax_dev *wimax_dev, - enum wimax_rf_state state) -{ -} -EXPORT_SYMBOL_GPL(wimax_report_rfkill_hw); - -void wimax_report_rfkill_sw(struct wimax_dev *wimax_dev, - enum wimax_rf_state state) -{ -} -EXPORT_SYMBOL_GPL(wimax_report_rfkill_sw); - -int wimax_rfkill(struct wimax_dev *wimax_dev, - enum wimax_rf_state state) -{ - return WIMAX_RF_ON << 1 | WIMAX_RF_ON; -} -EXPORT_SYMBOL_GPL(wimax_rfkill); - -int wimax_rfkill_add(struct wimax_dev *wimax_dev) -{ - return 0; -} - -void wimax_rfkill_rm(struct wimax_dev *wimax_dev) -{ -} - -#endif /* #ifdef CONFIG_RFKILL */ - - /* * Exporting to user space over generic netlink * -- cgit v1.2.3 From c64fb01627e24725d1f9d535e4426475a4415753 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 2 Jun 2009 13:01:38 +0200 Subject: rfkill: create useful userspace interface The new code added by this patch will make rfkill create a misc character device /dev/rfkill that userspace can use to control rfkill soft blocks and get status of devices as well as events when the status changes. Using it is very simple -- when you open it you can read a number of times to get the initial state, and every further read blocks (you can poll) on getting the next event from the kernel. The same structure you read is also used when writing to it to change the soft block of a given device, all devices of a given type, or all devices. This also makes CONFIG_RFKILL_INPUT selectable again in order to be able to test without it present since its functionality can now be replaced by userspace entirely and distros and users may not want the input part of rfkill interfering with their userspace code. We will also write a userspace daemon to handle all that and consequently add the input code to the feature removal schedule. In order to have rfkilld support both kernels with and without CONFIG_RFKILL_INPUT (or new kernels after its eventual removal) we also add an ioctl (that only exists if rfkill-input is present) to disable rfkill-input. It is not very efficient, but at least gives the correct behaviour in all cases. Signed-off-by: Johannes Berg Acked-by: Marcel Holtmann Signed-off-by: John W. Linville --- Documentation/feature-removal-schedule.txt | 7 + include/linux/rfkill.h | 84 +++++--- net/rfkill/Kconfig | 4 +- net/rfkill/core.c | 330 ++++++++++++++++++++++++++++- 4 files changed, 394 insertions(+), 31 deletions(-) (limited to 'Documentation') diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index de491a3e2313..edb2f0b07616 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -437,3 +437,10 @@ Why: Superseded by tdfxfb. I2C/DDC support used to live in a separate driver but this caused driver conflicts. Who: Jean Delvare Krzysztof Helt + +--------------------------- + +What: CONFIG_RFKILL_INPUT +When: 2.6.33 +Why: Should be implemented in userspace, policy daemon. +Who: Johannes Berg diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h index 090852c8de7a..7c116f6631b8 100644 --- a/include/linux/rfkill.h +++ b/include/linux/rfkill.h @@ -22,34 +22,17 @@ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include /* define userspace visible states */ #define RFKILL_STATE_SOFT_BLOCKED 0 #define RFKILL_STATE_UNBLOCKED 1 #define RFKILL_STATE_HARD_BLOCKED 2 -/* and that's all userspace gets */ -#ifdef __KERNEL__ -/* don't allow anyone to use these in the kernel */ -enum rfkill_user_states { - RFKILL_USER_STATE_SOFT_BLOCKED = RFKILL_STATE_SOFT_BLOCKED, - RFKILL_USER_STATE_UNBLOCKED = RFKILL_STATE_UNBLOCKED, - RFKILL_USER_STATE_HARD_BLOCKED = RFKILL_STATE_HARD_BLOCKED, -}; -#undef RFKILL_STATE_SOFT_BLOCKED -#undef RFKILL_STATE_UNBLOCKED -#undef RFKILL_STATE_HARD_BLOCKED - -#include -#include -#include -#include -#include -#include - /** * enum rfkill_type - type of rfkill switch. * + * @RFKILL_TYPE_ALL: toggles all switches (userspace only) * @RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device. * @RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device. * @RFKILL_TYPE_UWB: switch is on a ultra wideband device. @@ -58,6 +41,7 @@ enum rfkill_user_states { * @NUM_RFKILL_TYPES: number of defined rfkill types */ enum rfkill_type { + RFKILL_TYPE_ALL = 0, RFKILL_TYPE_WLAN, RFKILL_TYPE_BLUETOOTH, RFKILL_TYPE_UWB, @@ -66,6 +50,62 @@ enum rfkill_type { NUM_RFKILL_TYPES, }; +/** + * enum rfkill_operation - operation types + * @RFKILL_OP_ADD: a device was added + * @RFKILL_OP_DEL: a device was removed + * @RFKILL_OP_CHANGE: a device's state changed -- userspace changes one device + * @RFKILL_OP_CHANGE_ALL: userspace changes all devices (of a type, or all) + */ +enum rfkill_operation { + RFKILL_OP_ADD = 0, + RFKILL_OP_DEL, + RFKILL_OP_CHANGE, + RFKILL_OP_CHANGE_ALL, +}; + +/** + * struct rfkill_event - events for userspace on /dev/rfkill + * @idx: index of dev rfkill + * @type: type of the rfkill struct + * @op: operation code + * @hard: hard state (0/1) + * @soft: soft state (0/1) + * + * Structure used for userspace communication on /dev/rfkill, + * used for events from the kernel and control to the kernel. + */ +struct rfkill_event { + __u32 idx; + __u8 type; + __u8 op; + __u8 soft, hard; +} __packed; + +/* ioctl for turning off rfkill-input (if present) */ +#define RFKILL_IOC_MAGIC 'R' +#define RFKILL_IOC_NOINPUT 1 +#define RFKILL_IOCTL_NOINPUT _IO(RFKILL_IOC_MAGIC, RFKILL_IOC_NOINPUT) + +/* and that's all userspace gets */ +#ifdef __KERNEL__ +/* don't allow anyone to use these in the kernel */ +enum rfkill_user_states { + RFKILL_USER_STATE_SOFT_BLOCKED = RFKILL_STATE_SOFT_BLOCKED, + RFKILL_USER_STATE_UNBLOCKED = RFKILL_STATE_UNBLOCKED, + RFKILL_USER_STATE_HARD_BLOCKED = RFKILL_STATE_HARD_BLOCKED, +}; +#undef RFKILL_STATE_SOFT_BLOCKED +#undef RFKILL_STATE_UNBLOCKED +#undef RFKILL_STATE_HARD_BLOCKED + +#include +#include +#include +#include +#include +#include + /* this is opaque */ struct rfkill; @@ -84,11 +124,7 @@ struct rfkill; * the rfkill core query your driver before setting a requested * block. * @set_block: turn the transmitter on (blocked == false) or off - * (blocked == true) -- this is called only while the transmitter - * is not hard-blocked, but note that the core's view of whether - * the transmitter is hard-blocked might differ from your driver's - * view due to race conditions, so it is possible that it is still - * called at the same time as you are calling rfkill_set_hw_state(). + * (blocked == true) -- ignore and return 0 when hard blocked. * This callback must be assigned. */ struct rfkill_ops { diff --git a/net/rfkill/Kconfig b/net/rfkill/Kconfig index b47f72fae05d..fd7600d8ab14 100644 --- a/net/rfkill/Kconfig +++ b/net/rfkill/Kconfig @@ -18,7 +18,7 @@ config RFKILL_LEDS default y config RFKILL_INPUT - bool + bool "RF switch input support" depends on RFKILL depends on INPUT = y || RFKILL = INPUT - default y + default y if !EMBEDDED diff --git a/net/rfkill/core.c b/net/rfkill/core.c index 30a6f8d819b2..2230aa6b14f3 100644 --- a/net/rfkill/core.c +++ b/net/rfkill/core.c @@ -28,6 +28,10 @@ #include #include #include +#include +#include +#include +#include #include "rfkill.h" @@ -49,6 +53,8 @@ struct rfkill { unsigned long state; + u32 idx; + bool registered; bool suspended; @@ -69,6 +75,18 @@ struct rfkill { }; #define to_rfkill(d) container_of(d, struct rfkill, dev) +struct rfkill_int_event { + struct list_head list; + struct rfkill_event ev; +}; + +struct rfkill_data { + struct list_head list; + struct list_head events; + struct mutex mtx; + wait_queue_head_t read_wait; + bool input_handler; +}; MODULE_AUTHOR("Ivo van Doorn "); @@ -90,6 +108,7 @@ MODULE_LICENSE("GPL"); */ static LIST_HEAD(rfkill_list); /* list of registered rf switches */ static DEFINE_MUTEX(rfkill_global_mutex); +static LIST_HEAD(rfkill_fds); /* list of open fds of /dev/rfkill */ static unsigned int rfkill_default_state = 1; module_param_named(default_state, rfkill_default_state, uint, 0444); @@ -171,12 +190,48 @@ static inline void rfkill_led_trigger_unregister(struct rfkill *rfkill) } #endif /* CONFIG_RFKILL_LEDS */ -static void rfkill_uevent(struct rfkill *rfkill) +static void rfkill_fill_event(struct rfkill_event *ev, struct rfkill *rfkill, + enum rfkill_operation op) +{ + unsigned long flags; + + ev->idx = rfkill->idx; + ev->type = rfkill->type; + ev->op = op; + + spin_lock_irqsave(&rfkill->lock, flags); + ev->hard = !!(rfkill->state & RFKILL_BLOCK_HW); + ev->soft = !!(rfkill->state & (RFKILL_BLOCK_SW | + RFKILL_BLOCK_SW_PREV)); + spin_unlock_irqrestore(&rfkill->lock, flags); +} + +static void rfkill_send_events(struct rfkill *rfkill, enum rfkill_operation op) +{ + struct rfkill_data *data; + struct rfkill_int_event *ev; + + list_for_each_entry(data, &rfkill_fds, list) { + ev = kzalloc(sizeof(*ev), GFP_KERNEL); + if (!ev) + continue; + rfkill_fill_event(&ev->ev, rfkill, op); + mutex_lock(&data->mtx); + list_add_tail(&ev->list, &data->events); + mutex_unlock(&data->mtx); + wake_up_interruptible(&data->read_wait); + } +} + +static void rfkill_event(struct rfkill *rfkill) { if (!rfkill->registered || rfkill->suspended) return; kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE); + + /* also send event to /dev/rfkill */ + rfkill_send_events(rfkill, RFKILL_OP_CHANGE); } static bool __rfkill_set_hw_state(struct rfkill *rfkill, @@ -260,9 +315,12 @@ static void rfkill_set_block(struct rfkill *rfkill, bool blocked) spin_unlock_irqrestore(&rfkill->lock, flags); rfkill_led_trigger_event(rfkill); - rfkill_uevent(rfkill); + rfkill_event(rfkill); } +#ifdef CONFIG_RFKILL_INPUT +static atomic_t rfkill_input_disabled = ATOMIC_INIT(0); + /** * __rfkill_switch_all - Toggle state of all switches of given type * @type: type of interfaces to be affected @@ -299,6 +357,9 @@ static void __rfkill_switch_all(const enum rfkill_type type, bool blocked) */ void rfkill_switch_all(enum rfkill_type type, bool blocked) { + if (atomic_read(&rfkill_input_disabled)) + return; + mutex_lock(&rfkill_global_mutex); if (!rfkill_epo_lock_active) @@ -321,6 +382,9 @@ void rfkill_epo(void) struct rfkill *rfkill; int i; + if (atomic_read(&rfkill_input_disabled)) + return; + mutex_lock(&rfkill_global_mutex); rfkill_epo_lock_active = true; @@ -331,6 +395,7 @@ void rfkill_epo(void) rfkill_global_states[i].def = rfkill_global_states[i].cur; rfkill_global_states[i].cur = true; } + mutex_unlock(&rfkill_global_mutex); } @@ -345,6 +410,9 @@ void rfkill_restore_states(void) { int i; + if (atomic_read(&rfkill_input_disabled)) + return; + mutex_lock(&rfkill_global_mutex); rfkill_epo_lock_active = false; @@ -361,6 +429,9 @@ void rfkill_restore_states(void) */ void rfkill_remove_epo_lock(void) { + if (atomic_read(&rfkill_input_disabled)) + return; + mutex_lock(&rfkill_global_mutex); rfkill_epo_lock_active = false; mutex_unlock(&rfkill_global_mutex); @@ -391,9 +462,12 @@ bool rfkill_get_global_sw_state(const enum rfkill_type type) { return rfkill_global_states[type].cur; } +#endif void rfkill_set_global_sw_state(const enum rfkill_type type, bool blocked) { + BUG_ON(type == RFKILL_TYPE_ALL); + mutex_lock(&rfkill_global_mutex); /* don't allow unblock when epo */ @@ -537,6 +611,15 @@ static ssize_t rfkill_type_show(struct device *dev, return sprintf(buf, "%s\n", rfkill_get_type_str(rfkill->type)); } +static ssize_t rfkill_idx_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct rfkill *rfkill = to_rfkill(dev); + + return sprintf(buf, "%d\n", rfkill->idx); +} + static u8 user_state_from_blocked(unsigned long state) { if (state & RFKILL_BLOCK_HW) @@ -594,6 +677,7 @@ static ssize_t rfkill_claim_store(struct device *dev, static struct device_attribute rfkill_dev_attrs[] = { __ATTR(name, S_IRUGO, rfkill_name_show, NULL), __ATTR(type, S_IRUGO, rfkill_type_show, NULL), + __ATTR(index, S_IRUGO, rfkill_idx_show, NULL), __ATTR(state, S_IRUGO|S_IWUSR, rfkill_state_show, rfkill_state_store), __ATTR(claim, S_IRUGO|S_IWUSR, rfkill_claim_show, rfkill_claim_store), __ATTR_NULL @@ -708,7 +792,7 @@ struct rfkill * __must_check rfkill_alloc(const char *name, if (WARN_ON(!name)) return NULL; - if (WARN_ON(type >= NUM_RFKILL_TYPES)) + if (WARN_ON(type == RFKILL_TYPE_ALL || type >= NUM_RFKILL_TYPES)) return NULL; rfkill = kzalloc(sizeof(*rfkill), GFP_KERNEL); @@ -754,7 +838,9 @@ static void rfkill_uevent_work(struct work_struct *work) rfkill = container_of(work, struct rfkill, uevent_work); - rfkill_uevent(rfkill); + mutex_lock(&rfkill_global_mutex); + rfkill_event(rfkill); + mutex_unlock(&rfkill_global_mutex); } static void rfkill_sync_work(struct work_struct *work) @@ -785,6 +871,7 @@ int __must_check rfkill_register(struct rfkill *rfkill) goto unlock; } + rfkill->idx = rfkill_no; dev_set_name(dev, "rfkill%lu", rfkill_no); rfkill_no++; @@ -819,6 +906,7 @@ int __must_check rfkill_register(struct rfkill *rfkill) INIT_WORK(&rfkill->sync_work, rfkill_sync_work); schedule_work(&rfkill->sync_work); + rfkill_send_events(rfkill, RFKILL_OP_ADD); mutex_unlock(&rfkill_global_mutex); return 0; @@ -848,6 +936,7 @@ void rfkill_unregister(struct rfkill *rfkill) device_del(&rfkill->dev); mutex_lock(&rfkill_global_mutex); + rfkill_send_events(rfkill, RFKILL_OP_DEL); list_del_init(&rfkill->node); mutex_unlock(&rfkill_global_mutex); @@ -862,6 +951,227 @@ void rfkill_destroy(struct rfkill *rfkill) } EXPORT_SYMBOL(rfkill_destroy); +static int rfkill_fop_open(struct inode *inode, struct file *file) +{ + struct rfkill_data *data; + struct rfkill *rfkill; + struct rfkill_int_event *ev, *tmp; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + INIT_LIST_HEAD(&data->events); + mutex_init(&data->mtx); + init_waitqueue_head(&data->read_wait); + + mutex_lock(&rfkill_global_mutex); + mutex_lock(&data->mtx); + /* + * start getting events from elsewhere but hold mtx to get + * startup events added first + */ + list_add(&data->list, &rfkill_fds); + + list_for_each_entry(rfkill, &rfkill_list, node) { + ev = kzalloc(sizeof(*ev), GFP_KERNEL); + if (!ev) + goto free; + rfkill_fill_event(&ev->ev, rfkill, RFKILL_OP_ADD); + list_add_tail(&ev->list, &data->events); + } + mutex_unlock(&data->mtx); + mutex_unlock(&rfkill_global_mutex); + + file->private_data = data; + + return nonseekable_open(inode, file); + + free: + mutex_unlock(&data->mtx); + mutex_unlock(&rfkill_global_mutex); + mutex_destroy(&data->mtx); + list_for_each_entry_safe(ev, tmp, &data->events, list) + kfree(ev); + kfree(data); + return -ENOMEM; +} + +static unsigned int rfkill_fop_poll(struct file *file, poll_table *wait) +{ + struct rfkill_data *data = file->private_data; + unsigned int res = POLLOUT | POLLWRNORM; + + poll_wait(file, &data->read_wait, wait); + + mutex_lock(&data->mtx); + if (!list_empty(&data->events)) + res = POLLIN | POLLRDNORM; + mutex_unlock(&data->mtx); + + return res; +} + +static bool rfkill_readable(struct rfkill_data *data) +{ + bool r; + + mutex_lock(&data->mtx); + r = !list_empty(&data->events); + mutex_unlock(&data->mtx); + + return r; +} + +static ssize_t rfkill_fop_read(struct file *file, char __user *buf, + size_t count, loff_t *pos) +{ + struct rfkill_data *data = file->private_data; + struct rfkill_int_event *ev; + unsigned long sz; + int ret; + + mutex_lock(&data->mtx); + + while (list_empty(&data->events)) { + if (file->f_flags & O_NONBLOCK) { + ret = -EAGAIN; + goto out; + } + mutex_unlock(&data->mtx); + ret = wait_event_interruptible(data->read_wait, + rfkill_readable(data)); + mutex_lock(&data->mtx); + + if (ret) + goto out; + } + + ev = list_first_entry(&data->events, struct rfkill_int_event, + list); + + sz = min_t(unsigned long, sizeof(ev->ev), count); + ret = sz; + if (copy_to_user(buf, &ev->ev, sz)) + ret = -EFAULT; + + list_del(&ev->list); + kfree(ev); + out: + mutex_unlock(&data->mtx); + return ret; +} + +static ssize_t rfkill_fop_write(struct file *file, const char __user *buf, + size_t count, loff_t *pos) +{ + struct rfkill *rfkill; + struct rfkill_event ev; + + /* we don't need the 'hard' variable but accept it */ + if (count < sizeof(ev) - 1) + return -EINVAL; + + if (copy_from_user(&ev, buf, sizeof(ev) - 1)) + return -EFAULT; + + if (ev.op != RFKILL_OP_CHANGE && ev.op != RFKILL_OP_CHANGE_ALL) + return -EINVAL; + + if (ev.type >= NUM_RFKILL_TYPES) + return -EINVAL; + + mutex_lock(&rfkill_global_mutex); + + if (ev.op == RFKILL_OP_CHANGE_ALL) { + if (ev.type == RFKILL_TYPE_ALL) { + enum rfkill_type i; + for (i = 0; i < NUM_RFKILL_TYPES; i++) + rfkill_global_states[i].cur = ev.soft; + } else { + rfkill_global_states[ev.type].cur = ev.soft; + } + } + + list_for_each_entry(rfkill, &rfkill_list, node) { + if (rfkill->idx != ev.idx && ev.op != RFKILL_OP_CHANGE_ALL) + continue; + + if (rfkill->type != ev.type && ev.type != RFKILL_TYPE_ALL) + continue; + + rfkill_set_block(rfkill, ev.soft); + } + mutex_unlock(&rfkill_global_mutex); + + return count; +} + +static int rfkill_fop_release(struct inode *inode, struct file *file) +{ + struct rfkill_data *data = file->private_data; + struct rfkill_int_event *ev, *tmp; + + mutex_lock(&rfkill_global_mutex); + list_del(&data->list); + mutex_unlock(&rfkill_global_mutex); + + mutex_destroy(&data->mtx); + list_for_each_entry_safe(ev, tmp, &data->events, list) + kfree(ev); + +#ifdef CONFIG_RFKILL_INPUT + if (data->input_handler) + atomic_dec(&rfkill_input_disabled); +#endif + + kfree(data); + + return 0; +} + +#ifdef CONFIG_RFKILL_INPUT +static long rfkill_fop_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + struct rfkill_data *data = file->private_data; + + if (_IOC_TYPE(cmd) != RFKILL_IOC_MAGIC) + return -ENOSYS; + + if (_IOC_NR(cmd) != RFKILL_IOC_NOINPUT) + return -ENOSYS; + + mutex_lock(&data->mtx); + + if (!data->input_handler) { + atomic_inc(&rfkill_input_disabled); + data->input_handler = true; + } + + mutex_unlock(&data->mtx); + + return 0; +} +#endif + +static const struct file_operations rfkill_fops = { + .open = rfkill_fop_open, + .read = rfkill_fop_read, + .write = rfkill_fop_write, + .poll = rfkill_fop_poll, + .release = rfkill_fop_release, +#ifdef CONFIG_RFKILL_INPUT + .unlocked_ioctl = rfkill_fop_ioctl, + .compat_ioctl = rfkill_fop_ioctl, +#endif +}; + +static struct miscdevice rfkill_miscdev = { + .name = "rfkill", + .fops = &rfkill_fops, + .minor = MISC_DYNAMIC_MINOR, +}; static int __init rfkill_init(void) { @@ -875,10 +1185,19 @@ static int __init rfkill_init(void) if (error) goto out; + error = misc_register(&rfkill_miscdev); + if (error) { + class_unregister(&rfkill_class); + goto out; + } + #ifdef CONFIG_RFKILL_INPUT error = rfkill_handler_init(); - if (error) + if (error) { + misc_deregister(&rfkill_miscdev); class_unregister(&rfkill_class); + goto out; + } #endif out: @@ -891,6 +1210,7 @@ static void __exit rfkill_exit(void) #ifdef CONFIG_RFKILL_INPUT rfkill_handler_exit(); #endif + misc_deregister(&rfkill_miscdev); class_unregister(&rfkill_class); } module_exit(rfkill_exit); -- cgit v1.2.3 From f71fea23a27ba8ec53375832aab6a80fc14622e0 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 3 Jun 2009 10:17:59 +0200 Subject: rfkill: document /dev/rfkill Add some blurb about /dev/rfkill to the documentation and fix the "transmiter" spelling error. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- Documentation/rfkill.txt | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt index de941e309d47..1b74b5f30af4 100644 --- a/Documentation/rfkill.txt +++ b/Documentation/rfkill.txt @@ -113,7 +113,7 @@ The following sysfs entries exist for every rfkill device: 0: RFKILL_STATE_SOFT_BLOCKED transmitter is turned off by software 1: RFKILL_STATE_UNBLOCKED - transmiter is (potentially) active + transmitter is (potentially) active 2: RFKILL_STATE_HARD_BLOCKED transmitter is forced off by something outside of the driver's control. @@ -128,3 +128,9 @@ RFKILL_TYPE The contents of these variables corresponds to the "name", "state" and "type" sysfs files explained above. + +An alternative userspace interface exists as a misc device /dev/rfkill, +which allows userspace to obtain and set the state of rfkill devices and +sets of devices. It also notifies userspace about device addition and +removal. The API is a simple read/write API that is defined in +linux/rfkill.h. -- cgit v1.2.3 From 4e329972052c3649367b91de783f6293b8653cb2 Mon Sep 17 00:00:00 2001 From: Tilman Schmidt Date: Sun, 7 Jun 2009 09:09:23 +0000 Subject: isdn: rename capi_ctr_reseted() to capi_ctr_down() Change the name of the Kernel CAPI exported function capi_ctr_reseted() to something representing its purpose better. Impact: renaming, no functional change Signed-off-by: Tilman Schmidt Signed-off-by: David S. Miller --- Documentation/isdn/INTERFACE.CAPI | 4 ++-- drivers/isdn/capi/kcapi.c | 8 ++++---- drivers/isdn/hardware/avm/b1.c | 2 +- drivers/isdn/hardware/avm/b1dma.c | 2 +- drivers/isdn/hardware/avm/c4.c | 4 ++-- drivers/isdn/hardware/avm/t1isa.c | 2 +- drivers/isdn/hysdn/hycapi.c | 4 ++-- include/linux/isdn/capilli.h | 2 +- net/bluetooth/cmtp/capi.c | 2 +- 9 files changed, 15 insertions(+), 15 deletions(-) (limited to 'Documentation') diff --git a/Documentation/isdn/INTERFACE.CAPI b/Documentation/isdn/INTERFACE.CAPI index 786d619b36e5..463153816162 100644 --- a/Documentation/isdn/INTERFACE.CAPI +++ b/Documentation/isdn/INTERFACE.CAPI @@ -45,7 +45,7 @@ From then on, Kernel CAPI may call the registered callback functions for the device. If the device becomes unusable for any reason (shutdown, disconnect ...), the -driver has to call capi_ctr_reseted(). This will prevent further calls to the +driver has to call capi_ctr_down(). This will prevent further calls to the callback functions by Kernel CAPI. @@ -166,7 +166,7 @@ int detach_capi_ctr(struct capi_ctr *ctrlr) register/unregister a device (controller) with Kernel CAPI void capi_ctr_ready(struct capi_ctr *ctrlr) -void capi_ctr_reseted(struct capi_ctr *ctrlr) +void capi_ctr_down(struct capi_ctr *ctrlr) signal controller ready/not ready void capi_ctr_suspend_output(struct capi_ctr *ctrlr) diff --git a/drivers/isdn/capi/kcapi.c b/drivers/isdn/capi/kcapi.c index f33170368cd1..57d26360f64e 100644 --- a/drivers/isdn/capi/kcapi.c +++ b/drivers/isdn/capi/kcapi.c @@ -377,14 +377,14 @@ void capi_ctr_ready(struct capi_ctr * card) EXPORT_SYMBOL(capi_ctr_ready); /** - * capi_ctr_reseted() - signal CAPI controller reset + * capi_ctr_down() - signal CAPI controller not ready * @card: controller descriptor structure. * * Called by hardware driver to signal that the controller is down and * unavailable for use. */ -void capi_ctr_reseted(struct capi_ctr * card) +void capi_ctr_down(struct capi_ctr * card) { u16 appl; @@ -413,7 +413,7 @@ void capi_ctr_reseted(struct capi_ctr * card) notify_push(KCI_CONTRDOWN, card->cnr, 0, 0); } -EXPORT_SYMBOL(capi_ctr_reseted); +EXPORT_SYMBOL(capi_ctr_down); /** * capi_ctr_suspend_output() - suspend controller @@ -517,7 +517,7 @@ EXPORT_SYMBOL(attach_capi_ctr); int detach_capi_ctr(struct capi_ctr *card) { if (card->cardstate != CARD_DETECTED) - capi_ctr_reseted(card); + capi_ctr_down(card); ncards--; diff --git a/drivers/isdn/hardware/avm/b1.c b/drivers/isdn/hardware/avm/b1.c index abf05ec31760..a7c0083e78a7 100644 --- a/drivers/isdn/hardware/avm/b1.c +++ b/drivers/isdn/hardware/avm/b1.c @@ -330,7 +330,7 @@ void b1_reset_ctr(struct capi_ctr *ctrl) spin_lock_irqsave(&card->lock, flags); capilib_release(&cinfo->ncci_head); spin_unlock_irqrestore(&card->lock, flags); - capi_ctr_reseted(ctrl); + capi_ctr_down(ctrl); } void b1_register_appl(struct capi_ctr *ctrl, diff --git a/drivers/isdn/hardware/avm/b1dma.c b/drivers/isdn/hardware/avm/b1dma.c index da34b98e3de7..0e84aaae43fd 100644 --- a/drivers/isdn/hardware/avm/b1dma.c +++ b/drivers/isdn/hardware/avm/b1dma.c @@ -759,7 +759,7 @@ void b1dma_reset_ctr(struct capi_ctr *ctrl) memset(cinfo->version, 0, sizeof(cinfo->version)); capilib_release(&cinfo->ncci_head); spin_unlock_irqrestore(&card->lock, flags); - capi_ctr_reseted(ctrl); + capi_ctr_down(ctrl); } /* ------------------------------------------------------------- */ diff --git a/drivers/isdn/hardware/avm/c4.c b/drivers/isdn/hardware/avm/c4.c index 9df1d3f66c87..6833301a45fc 100644 --- a/drivers/isdn/hardware/avm/c4.c +++ b/drivers/isdn/hardware/avm/c4.c @@ -681,7 +681,7 @@ static irqreturn_t c4_handle_interrupt(avmcard *card) spin_lock_irqsave(&card->lock, flags); capilib_release(&cinfo->ncci_head); spin_unlock_irqrestore(&card->lock, flags); - capi_ctr_reseted(&cinfo->capi_ctrl); + capi_ctr_down(&cinfo->capi_ctrl); } card->nlogcontr = 0; return IRQ_HANDLED; @@ -909,7 +909,7 @@ static void c4_reset_ctr(struct capi_ctr *ctrl) for (i=0; i < card->nr_controllers; i++) { cinfo = &card->ctrlinfo[i]; memset(cinfo->version, 0, sizeof(cinfo->version)); - capi_ctr_reseted(&cinfo->capi_ctrl); + capi_ctr_down(&cinfo->capi_ctrl); } card->nlogcontr = 0; } diff --git a/drivers/isdn/hardware/avm/t1isa.c b/drivers/isdn/hardware/avm/t1isa.c index e7724493738c..1c53fd49adb6 100644 --- a/drivers/isdn/hardware/avm/t1isa.c +++ b/drivers/isdn/hardware/avm/t1isa.c @@ -339,7 +339,7 @@ static void t1isa_reset_ctr(struct capi_ctr *ctrl) spin_lock_irqsave(&card->lock, flags); capilib_release(&cinfo->ncci_head); spin_unlock_irqrestore(&card->lock, flags); - capi_ctr_reseted(ctrl); + capi_ctr_down(ctrl); } static void t1isa_remove(struct pci_dev *pdev) diff --git a/drivers/isdn/hysdn/hycapi.c b/drivers/isdn/hysdn/hycapi.c index 53f6ad1235db..4ffaa14b9fc4 100644 --- a/drivers/isdn/hysdn/hycapi.c +++ b/drivers/isdn/hysdn/hycapi.c @@ -67,7 +67,7 @@ hycapi_reset_ctr(struct capi_ctr *ctrl) printk(KERN_NOTICE "HYCAPI hycapi_reset_ctr\n"); #endif capilib_release(&cinfo->ncci_head); - capi_ctr_reseted(ctrl); + capi_ctr_down(ctrl); } /****************************** @@ -347,7 +347,7 @@ int hycapi_capi_stop(hysdn_card *card) if(cinfo) { ctrl = &cinfo->capi_ctrl; /* ctrl->suspend_output(ctrl); */ - capi_ctr_reseted(ctrl); + capi_ctr_down(ctrl); } return 0; } diff --git a/include/linux/isdn/capilli.h b/include/linux/isdn/capilli.h index 35e9b0fd014b..7acb87a44872 100644 --- a/include/linux/isdn/capilli.h +++ b/include/linux/isdn/capilli.h @@ -79,7 +79,7 @@ int attach_capi_ctr(struct capi_ctr *); int detach_capi_ctr(struct capi_ctr *); void capi_ctr_ready(struct capi_ctr * card); -void capi_ctr_reseted(struct capi_ctr * card); +void capi_ctr_down(struct capi_ctr * card); void capi_ctr_suspend_output(struct capi_ctr * card); void capi_ctr_resume_output(struct capi_ctr * card); void capi_ctr_handle_message(struct capi_ctr * card, u16 appl, struct sk_buff *skb); diff --git a/net/bluetooth/cmtp/capi.c b/net/bluetooth/cmtp/capi.c index 78958c0f9a40..97f8d68d574d 100644 --- a/net/bluetooth/cmtp/capi.c +++ b/net/bluetooth/cmtp/capi.c @@ -382,7 +382,7 @@ static void cmtp_reset_ctr(struct capi_ctr *ctrl) BT_DBG("ctrl %p", ctrl); - capi_ctr_reseted(ctrl); + capi_ctr_down(ctrl); atomic_inc(&session->terminate); cmtp_schedule(session); -- cgit v1.2.3 From fe93299a008a7056fe1790744b3a425ddf79a16b Mon Sep 17 00:00:00 2001 From: Tilman Schmidt Date: Sun, 7 Jun 2009 09:09:24 +0000 Subject: isdn: extend INTERFACE.CAPI document Clarify calling context and return codes of callback methods, and add a description of the _cmsg structure and helper functions. Impact: documentation Signed-off-by: Tilman Schmidt Signed-off-by: David S. Miller --- Documentation/isdn/INTERFACE.CAPI | 90 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 88 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/isdn/INTERFACE.CAPI b/Documentation/isdn/INTERFACE.CAPI index 463153816162..686e107923ec 100644 --- a/Documentation/isdn/INTERFACE.CAPI +++ b/Documentation/isdn/INTERFACE.CAPI @@ -114,20 +114,36 @@ char *driver_name int (*load_firmware)(struct capi_ctr *ctrlr, capiloaddata *ldata) (optional) pointer to a callback function for sending firmware and configuration data to the device + Return value: 0 on success, error code on error + Called in process context. void (*reset_ctr)(struct capi_ctr *ctrlr) - pointer to a callback function for performing a reset on the device, - releasing all registered applications + (optional) pointer to a callback function for performing a reset on + the device, releasing all registered applications + Called in process context. void (*register_appl)(struct capi_ctr *ctrlr, u16 applid, capi_register_params *rparam) void (*release_appl)(struct capi_ctr *ctrlr, u16 applid) pointers to callback functions for registration and deregistration of applications with the device + Calls to these functions are serialized by Kernel CAPI so that only + one call to any of them is active at any time. u16 (*send_message)(struct capi_ctr *ctrlr, struct sk_buff *skb) pointer to a callback function for sending a CAPI message to the device + Return value: CAPI error code + If the method returns 0 (CAPI_NOERROR) the driver has taken ownership + of the skb and the caller may no longer access it. If it returns a + non-zero (error) value then ownership of the skb returns to the caller + who may reuse or free it. + The return value should only be used to signal problems with respect + to accepting or queueing the message. Errors occurring during the + actual processing of the message should be signaled with an + appropriate reply message. + Calls to this function are not serialized by Kernel CAPI, ie. it must + be prepared to be re-entered. char *(*procinfo)(struct capi_ctr *ctrlr) pointer to a callback function returning the entry for the device in @@ -138,6 +154,8 @@ read_proc_t *ctr_read_proc system entry, /proc/capi/controllers/; will be called with a pointer to the device's capi_ctr structure as the last (data) argument +Note: Callback functions are never called in interrupt context. + - to be filled in before calling capi_ctr_ready(): u8 manu[CAPI_MANUFACTURER_LEN] @@ -153,6 +171,45 @@ u8 serial[CAPI_SERIAL_LEN] value to return for CAPI_GET_SERIAL +4.3 The _cmsg Structure + +(declared in ) + +The _cmsg structure stores the contents of a CAPI 2.0 message in an easily +accessible form. It contains members for all possible CAPI 2.0 parameters, of +which only those appearing in the message type currently being processed are +actually used. Unused members should be set to zero. + +Members are named after the CAPI 2.0 standard names of the parameters they +represent. See for the exact spelling. Member data +types are: + +u8 for CAPI parameters of type 'byte' + +u16 for CAPI parameters of type 'word' + +u32 for CAPI parameters of type 'dword' + +_cstruct for CAPI parameters of type 'struct' not containing any + variably-sized (struct) subparameters (eg. 'Called Party Number') + The member is a pointer to a buffer containing the parameter in + CAPI encoding (length + content). It may also be NULL, which will + be taken to represent an empty (zero length) parameter. + +_cmstruct for CAPI parameters of type 'struct' containing 'struct' + subparameters ('Additional Info' and 'B Protocol') + The representation is a single byte containing one of the values: + CAPI_DEFAULT: the parameter is empty + CAPI_COMPOSE: the values of the subparameters are stored + individually in the corresponding _cmsg structure members + +Functions capi_cmsg2message() and capi_message2cmsg() are provided to convert +messages between their transport encoding described in the CAPI 2.0 standard +and their _cmsg structure representation. Note that capi_cmsg2message() does +not know or check the size of its destination buffer. The caller must make +sure it is big enough to accomodate the resulting CAPI message. + + 5. Lower Layer Interface Functions (declared in ) @@ -211,3 +268,32 @@ CAPIMSG_CONTROL(m) CAPIMSG_SETCONTROL(m, contr) Controller/PLCI/NCCI (u32) CAPIMSG_DATALEN(m) CAPIMSG_SETDATALEN(m, len) Data Length (u16) + +Library functions for working with _cmsg structures +(from ): + +unsigned capi_cmsg2message(_cmsg *cmsg, u8 *msg) + Assembles a CAPI 2.0 message from the parameters in *cmsg, storing the + result in *msg. + +unsigned capi_message2cmsg(_cmsg *cmsg, u8 *msg) + Disassembles the CAPI 2.0 message in *msg, storing the parameters in + *cmsg. + +unsigned capi_cmsg_header(_cmsg *cmsg, u16 ApplId, u8 Command, u8 Subcommand, + u16 Messagenumber, u32 Controller) + Fills the header part and address field of the _cmsg structure *cmsg + with the given values, zeroing the remainder of the structure so only + parameters with non-default values need to be changed before sending + the message. + +void capi_cmsg_answer(_cmsg *cmsg) + Sets the low bit of the Subcommand field in *cmsg, thereby converting + _REQ to _CONF and _IND to _RESP. + +char *capi_cmd2str(u8 Command, u8 Subcommand) + Returns the CAPI 2.0 message name corresponding to the given command + and subcommand values, as a static ASCII string. The return value may + be NULL if the command/subcommand is not one of those defined in the + CAPI 2.0 standard. + -- cgit v1.2.3 From 02cf228639233aa227a152955a98564c7a18f9ee Mon Sep 17 00:00:00 2001 From: Sergey Lapin Date: Mon, 8 Jun 2009 12:18:50 +0000 Subject: ieee802154: add documentation about our stack Add MAINTAINERS entry and a small text describing our stack interfaces, how to hook the drivers, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Sergey Lapin Signed-off-by: David S. Miller --- Documentation/networking/ieee802154.txt | 76 +++++++++++++++++++++++++++++++++ MAINTAINERS | 12 ++++++ 2 files changed, 88 insertions(+) create mode 100644 Documentation/networking/ieee802154.txt (limited to 'Documentation') diff --git a/Documentation/networking/ieee802154.txt b/Documentation/networking/ieee802154.txt new file mode 100644 index 000000000000..a0280ad2edc9 --- /dev/null +++ b/Documentation/networking/ieee802154.txt @@ -0,0 +1,76 @@ + + Linux IEEE 802.15.4 implementation + + +Introduction +============ + +The Linux-ZigBee project goal is to provide complete implementation +of IEEE 802.15.4 / ZigBee / 6LoWPAN protocols. IEEE 802.15.4 is a stack +of protocols for organizing Low-Rate Wireless Personal Area Networks. + +Currently only IEEE 802.15.4 layer is implemented. We have choosen +to use plain Berkeley socket API, the generic Linux networking stack +to transfer IEEE 802.15.4 messages and a special protocol over genetlink +for configuration/management + + +Socket API +========== + +int sd = socket(PF_IEEE802154, SOCK_DGRAM, 0); +..... + +The address family, socket addresses etc. are defined in the +include/net/ieee802154/af_ieee802154.h header or in the special header +in our userspace package (see either linux-zigbee sourceforge download page +or git tree at git://linux-zigbee.git.sourceforge.net/gitroot/linux-zigbee). + +One can use SOCK_RAW for passing raw data towards device xmit function. YMMV. + + +MLME - MAC Level Management +============================ + +Most of IEEE 802.15.4 MLME interfaces are directly mapped on netlink commands. +See the include/net/ieee802154/nl802154.h header. Our userspace tools package +(see above) provides CLI configuration utility for radio interfaces and simple +coordinator for IEEE 802.15.4 networks as an example users of MLME protocol. + + +Kernel side +============= + +Like with WiFi, there are several types of devices implementing IEEE 802.15.4. +1) 'HardMAC'. The MAC layer is implemented in the device itself, the device + exports MLME and data API. +2) 'SoftMAC' or just radio. These types of devices are just radio transceivers + possibly with some kinds of acceleration like automatic CRC computation and + comparation, automagic ACK handling, address matching, etc. + +Those types of devices require different approach to be hooked into Linux kernel. + + +HardMAC +======= + +See the header include/net/ieee802154/netdevice.h. You have to implement Linux +net_device, with .type = ARPHRD_IEEE802154. Data is exchanged with socket family +code via plain sk_buffs. The control block of sk_buffs will contain additional +info as described in the struct ieee802154_mac_cb. + +To hook the MLME interface you have to populate the ml_priv field of your +net_device with a pointer to struct ieee802154_mlme_ops instance. All fields are +required. + +We provide an example of simple HardMAC driver at drivers/ieee802154/fakehard.c + + +SoftMAC +======= + +We are going to provide intermediate layer impelementing IEEE 802.15.4 MAC +in software. This is currently WIP. + +See header include/net/ieee802154/mac802154.h and several drivers in +drivers/ieee802154/ diff --git a/MAINTAINERS b/MAINTAINERS index 2f6a8fcfb1f2..a6df68fad9ba 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2819,6 +2819,18 @@ L: linux1394-devel@lists.sourceforge.net S: Maintained F: drivers/ieee1394/raw1394* +IEEE 802.15.4 SUBSYSTEM +P: Dmitry Eremin-Solenikov +M: dbaryshkov@gmail.com +P: Sergey Lapin +M: slapin@ossfans.org +L: linux-zigbee-devel@lists.sourceforge.net +W: http://apps.sourceforge.net/trac/linux-zigbee +T: git git://git.kernel.org/pub/scm/linux/kernel/git/lumag/lowpan.git +S: Maintained +F: net/ieee802154/ +F: drivers/ieee801254/ + INTEGRITY MEASUREMENT ARCHITECTURE (IMA) P: Mimi Zohar M: zohar@us.ibm.com -- cgit v1.2.3 From 746e6ad23cd6fec2edce056e014a0eabeffa838c Mon Sep 17 00:00:00 2001 From: John Dykstra Date: Thu, 11 Jun 2009 20:57:21 -0700 Subject: [PATCH] net core: Some interface flags not returned by SIOCGIFFLAGS Commit b00055aacdb172c05067612278ba27265fcd05ce " [NET] core: add RFC2863 operstate" defined new interface flag values. Its documentation specified that these flags could be accessed from user space via SIOCGIFFLAGS. However, this does not work because the new flags do not fit in that ioctl's argument width. Change the documentation to match the code's behavior. Also change the source to explicitly show the truncation. This _should_ have no effect on executable code, and did not with gcc 4.2.4 generating x86 code. A new ioctl could be defined to return all interface flags to user space. However, since this has been broken for three years with no one complaining, there doesn't seem much need. They are still accessible via netlink. Reported-by: "Fredrik Arnerup" Signed-off-by: John Dykstra Signed-off-by: David S. Miller --- Documentation/networking/operstates.txt | 3 --- net/core/dev.c | 2 +- 2 files changed, 1 insertion(+), 4 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/operstates.txt b/Documentation/networking/operstates.txt index c9074f9b78bb..1a77a3cfae54 100644 --- a/Documentation/networking/operstates.txt +++ b/Documentation/networking/operstates.txt @@ -38,9 +38,6 @@ ifinfomsg::if_flags & IFF_LOWER_UP: ifinfomsg::if_flags & IFF_DORMANT: Driver has signaled netif_dormant_on() -These interface flags can also be queried without netlink using the -SIOCGIFFLAGS ioctl. - TLV IFLA_OPERSTATE contains RFC2863 state of the interface in numeric representation: diff --git a/net/core/dev.c b/net/core/dev.c index 11560e3258b5..a09bf658970f 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4209,7 +4209,7 @@ static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cm switch (cmd) { case SIOCGIFFLAGS: /* Get interface flags */ - ifr->ifr_flags = dev_get_flags(dev); + ifr->ifr_flags = (short) dev_get_flags(dev); return 0; case SIOCGIFMETRIC: /* Get the metric on the interface -- cgit v1.2.3