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path: root/drivers/net/wireless/rtl8187_dev.c
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Diffstat (limited to 'drivers/net/wireless/rtl8187_dev.c')
-rw-r--r--drivers/net/wireless/rtl8187_dev.c110
1 files changed, 79 insertions, 31 deletions
diff --git a/drivers/net/wireless/rtl8187_dev.c b/drivers/net/wireless/rtl8187_dev.c
index d3067b1216ca..57376fb993ed 100644
--- a/drivers/net/wireless/rtl8187_dev.c
+++ b/drivers/net/wireless/rtl8187_dev.c
@@ -31,6 +31,8 @@ MODULE_DESCRIPTION("RTL8187/RTL8187B USB wireless driver");
MODULE_LICENSE("GPL");
static struct usb_device_id rtl8187_table[] __devinitdata = {
+ /* Asus */
+ {USB_DEVICE(0x0b05, 0x171d), .driver_info = DEVICE_RTL8187},
/* Realtek */
{USB_DEVICE(0x0bda, 0x8187), .driver_info = DEVICE_RTL8187},
{USB_DEVICE(0x0bda, 0x8189), .driver_info = DEVICE_RTL8187B},
@@ -169,6 +171,7 @@ static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
{
struct rtl8187_priv *priv = dev->priv;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
unsigned int ep;
void *buf;
struct urb *urb;
@@ -234,6 +237,20 @@ static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
ep = epmap[skb_get_queue_mapping(skb)];
}
+ /* FIXME: The sequence that follows is needed for this driver to
+ * work with mac80211 since "mac80211: fix TX sequence numbers".
+ * As with the temporary code in rt2x00, changes will be needed
+ * to get proper sequence numbers on beacons. In addition, this
+ * patch places the sequence number in the hardware state, which
+ * limits us to a single virtual state.
+ */
+ if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
+ if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
+ priv->seqno += 0x10;
+ ieee80211hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+ ieee80211hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
+ }
+
info->driver_data[0] = dev;
info->driver_data[1] = urb;
@@ -257,6 +274,7 @@ static void rtl8187_rx_cb(struct urb *urb)
struct ieee80211_rx_status rx_status = { 0 };
int rate, signal;
u32 flags;
+ u32 quality;
spin_lock(&priv->rx_queue.lock);
if (skb->next)
@@ -280,44 +298,57 @@ static void rtl8187_rx_cb(struct urb *urb)
flags = le32_to_cpu(hdr->flags);
signal = hdr->signal & 0x7f;
rx_status.antenna = (hdr->signal >> 7) & 1;
- rx_status.signal = signal;
rx_status.noise = hdr->noise;
rx_status.mactime = le64_to_cpu(hdr->mac_time);
- priv->signal = signal;
priv->quality = signal;
+ rx_status.qual = priv->quality;
priv->noise = hdr->noise;
+ rate = (flags >> 20) & 0xF;
+ if (rate > 3) { /* OFDM rate */
+ if (signal > 90)
+ signal = 90;
+ else if (signal < 25)
+ signal = 25;
+ signal = 90 - signal;
+ } else { /* CCK rate */
+ if (signal > 95)
+ signal = 95;
+ else if (signal < 30)
+ signal = 30;
+ signal = 95 - signal;
+ }
+ rx_status.signal = signal;
+ priv->signal = signal;
} else {
struct rtl8187b_rx_hdr *hdr =
(typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
+ /* The Realtek datasheet for the RTL8187B shows that the RX
+ * header contains the following quantities: signal quality,
+ * RSSI, AGC, the received power in dB, and the measured SNR.
+ * In testing, none of these quantities show qualitative
+ * agreement with AP signal strength, except for the AGC,
+ * which is inversely proportional to the strength of the
+ * signal. In the following, the quality and signal strength
+ * are derived from the AGC. The arbitrary scaling constants
+ * are chosen to make the results close to the values obtained
+ * for a BCM4312 using b43 as the driver. The noise is ignored
+ * for now.
+ */
flags = le32_to_cpu(hdr->flags);
- signal = hdr->agc >> 1;
- rx_status.antenna = (hdr->signal >> 7) & 1;
- rx_status.signal = 64 - min(hdr->noise, (u8)64);
- rx_status.noise = hdr->noise;
+ quality = 170 - hdr->agc;
+ if (quality > 100)
+ quality = 100;
+ signal = 14 - hdr->agc / 2;
+ rx_status.qual = quality;
+ priv->quality = quality;
+ rx_status.signal = signal;
+ priv->signal = signal;
+ rx_status.antenna = (hdr->rssi >> 7) & 1;
rx_status.mactime = le64_to_cpu(hdr->mac_time);
- priv->signal = hdr->signal;
- priv->quality = hdr->agc >> 1;
- priv->noise = hdr->noise;
+ rate = (flags >> 20) & 0xF;
}
skb_trim(skb, flags & 0x0FFF);
- rate = (flags >> 20) & 0xF;
- if (rate > 3) { /* OFDM rate */
- if (signal > 90)
- signal = 90;
- else if (signal < 25)
- signal = 25;
- signal = 90 - signal;
- } else { /* CCK rate */
- if (signal > 95)
- signal = 95;
- else if (signal < 30)
- signal = 30;
- signal = 95 - signal;
- }
-
- rx_status.qual = priv->quality;
- rx_status.signal = signal;
rx_status.rate_idx = rate;
rx_status.freq = dev->conf.channel->center_freq;
rx_status.band = dev->conf.channel->band;
@@ -697,6 +728,7 @@ static int rtl8187_start(struct ieee80211_hw *dev)
if (ret)
return ret;
+ mutex_lock(&priv->conf_mutex);
if (priv->is_rtl8187b) {
reg = RTL818X_RX_CONF_MGMT |
RTL818X_RX_CONF_DATA |
@@ -718,6 +750,7 @@ static int rtl8187_start(struct ieee80211_hw *dev)
(7 << 0 /* long retry limit */) |
(7 << 21 /* MAX TX DMA */));
rtl8187_init_urbs(dev);
+ mutex_unlock(&priv->conf_mutex);
return 0;
}
@@ -761,6 +794,7 @@ static int rtl8187_start(struct ieee80211_hw *dev)
reg |= RTL818X_CMD_TX_ENABLE;
reg |= RTL818X_CMD_RX_ENABLE;
rtl818x_iowrite8(priv, &priv->map->CMD, reg);
+ mutex_unlock(&priv->conf_mutex);
return 0;
}
@@ -772,6 +806,7 @@ static void rtl8187_stop(struct ieee80211_hw *dev)
struct sk_buff *skb;
u32 reg;
+ mutex_lock(&priv->conf_mutex);
rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
reg = rtl818x_ioread8(priv, &priv->map->CMD);
@@ -791,7 +826,7 @@ static void rtl8187_stop(struct ieee80211_hw *dev)
usb_kill_urb(info->urb);
kfree_skb(skb);
}
- return;
+ mutex_unlock(&priv->conf_mutex);
}
static int rtl8187_add_interface(struct ieee80211_hw *dev,
@@ -811,6 +846,7 @@ static int rtl8187_add_interface(struct ieee80211_hw *dev,
return -EOPNOTSUPP;
}
+ mutex_lock(&priv->conf_mutex);
priv->vif = conf->vif;
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
@@ -819,6 +855,7 @@ static int rtl8187_add_interface(struct ieee80211_hw *dev,
((u8 *)conf->mac_addr)[i]);
rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
+ mutex_unlock(&priv->conf_mutex);
return 0;
}
@@ -826,8 +863,10 @@ static void rtl8187_remove_interface(struct ieee80211_hw *dev,
struct ieee80211_if_init_conf *conf)
{
struct rtl8187_priv *priv = dev->priv;
+ mutex_lock(&priv->conf_mutex);
priv->mode = IEEE80211_IF_TYPE_MNTR;
priv->vif = NULL;
+ mutex_unlock(&priv->conf_mutex);
}
static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
@@ -835,6 +874,7 @@ static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
struct rtl8187_priv *priv = dev->priv;
u32 reg;
+ mutex_lock(&priv->conf_mutex);
reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
/* Enable TX loopback on MAC level to avoid TX during channel
* changes, as this has be seen to causes problems and the
@@ -867,6 +907,7 @@ static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
+ mutex_unlock(&priv->conf_mutex);
return 0;
}
@@ -878,6 +919,7 @@ static int rtl8187_config_interface(struct ieee80211_hw *dev,
int i;
u8 reg;
+ mutex_lock(&priv->conf_mutex);
for (i = 0; i < ETH_ALEN; i++)
rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
@@ -891,6 +933,7 @@ static int rtl8187_config_interface(struct ieee80211_hw *dev,
rtl818x_iowrite8(priv, &priv->map->MSR, reg);
}
+ mutex_unlock(&priv->conf_mutex);
return 0;
}
@@ -1015,9 +1058,7 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
priv->mode = IEEE80211_IF_TYPE_MNTR;
dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
- IEEE80211_HW_RX_INCLUDES_FCS |
- IEEE80211_HW_SIGNAL_UNSPEC;
- dev->max_signal = 65;
+ IEEE80211_HW_RX_INCLUDES_FCS;
eeprom.data = dev;
eeprom.register_read = rtl8187_eeprom_register_read;
@@ -1132,10 +1173,16 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
(*channel++).hw_value = txpwr >> 8;
}
- if (priv->is_rtl8187b)
+ if (priv->is_rtl8187b) {
printk(KERN_WARNING "rtl8187: 8187B chip detected. Support "
"is EXPERIMENTAL, and could damage your\n"
" hardware, use at your own risk\n");
+ dev->flags |= IEEE80211_HW_SIGNAL_DBM;
+ } else {
+ dev->flags |= IEEE80211_HW_SIGNAL_UNSPEC;
+ dev->max_signal = 65;
+ }
+
if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
" info!\n");
@@ -1154,6 +1201,7 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
printk(KERN_ERR "rtl8187: Cannot register device\n");
goto err_free_dev;
}
+ mutex_init(&priv->conf_mutex);
printk(KERN_INFO "%s: hwaddr %s, %s V%d + %s\n",
wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 23:02:53 +0100