From 65c397d6b58d5e401bee7c24608d3a33a220a63a Mon Sep 17 00:00:00 2001 From: Konstantin Ozerkov Date: Wed, 9 Nov 2011 19:28:54 +0400 Subject: ALSA: intel8x0: move virtual environment detection code into one place This is refactoring patch: preparation for add improved detection code. Now all detection code placed in one place. Signed-off-by: Konstantin Ozerkov Signed-off-by: Denis V. Lunev Signed-off-by: Takashi Iwai --- sound/pci/intel8x0.c | 30 +++++++++++++++++++----------- 1 file changed, 19 insertions(+), 11 deletions(-) (limited to 'sound/pci') diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c index c3b9bd0e188e..2d4bb4c9a030 100644 --- a/sound/pci/intel8x0.c +++ b/sound/pci/intel8x0.c @@ -2937,6 +2937,24 @@ static unsigned int sis_codec_bits[3] = { ICH_PCR, ICH_SCR, ICH_SIS_TCR }; +static int __devinit snd_intel8x0_inside_vm(void) +{ + int result = inside_vm; + + if (result < 0) { + /* detect KVM and Parallels virtual environments */ + result = kvm_para_available(); +#if defined(__i386__) || defined(__x86_64__) + result = result || boot_cpu_has(X86_FEATURE_HYPERVISOR); +#endif + } + + if (result) + printk(KERN_INFO "intel8x0: enable KVM optimization\n"); + + return result; +} + static int __devinit snd_intel8x0_create(struct snd_card *card, struct pci_dev *pci, unsigned long device_type, @@ -3004,9 +3022,7 @@ static int __devinit snd_intel8x0_create(struct snd_card *card, if (xbox) chip->xbox = 1; - chip->inside_vm = inside_vm; - if (inside_vm) - printk(KERN_INFO "intel8x0: enable KVM optimization\n"); + chip->inside_vm = snd_intel8x0_inside_vm(); if (pci->vendor == PCI_VENDOR_ID_INTEL && pci->device == PCI_DEVICE_ID_INTEL_440MX) @@ -3250,14 +3266,6 @@ static int __devinit snd_intel8x0_probe(struct pci_dev *pci, buggy_irq = 0; } - if (inside_vm < 0) { - /* detect KVM and Parallels virtual environments */ - inside_vm = kvm_para_available(); -#if defined(__i386__) || defined(__x86_64__) - inside_vm = inside_vm || boot_cpu_has(X86_FEATURE_HYPERVISOR); -#endif - } - if ((err = snd_intel8x0_create(card, pci, pci_id->driver_data, &chip)) < 0) { snd_card_free(card); -- cgit v1.2.3 From 7fb4f392bd27e5b0e2444430d241370837bcc8fa Mon Sep 17 00:00:00 2001 From: Konstantin Ozerkov Date: Wed, 9 Nov 2011 19:28:55 +0400 Subject: ALSA: intel8x0: improve virtual environment detection Detection code improved by PCI SSID usage. VM optimization now enabled only for known devcices (skip host devices forwarded to VM by VT-d or same kind of technology). For debug/troubleshooting purposes optimization can be forced (on/off) by module parameter: "inside_vm" (boolean). Known devices (PCI SSID): 1af4:1100: Reserved for KVM devices. Note this is not yet implemented for KVM's ICH/AC'97 emulation. 1ab8:xxxx: Parallels ICH/AC'97 emulated sound. [ fixed a minor coding-style issue by tiwai] Signed-off-by: Konstantin Ozerkov Signed-off-by: Denis V. Lunev Signed-off-by: Takashi Iwai --- sound/pci/intel8x0.c | 41 +++++++++++++++++++++++++++++++---------- 1 file changed, 31 insertions(+), 10 deletions(-) (limited to 'sound/pci') diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c index 2d4bb4c9a030..11718b49b2e2 100644 --- a/sound/pci/intel8x0.c +++ b/sound/pci/intel8x0.c @@ -2937,20 +2937,41 @@ static unsigned int sis_codec_bits[3] = { ICH_PCR, ICH_SCR, ICH_SIS_TCR }; -static int __devinit snd_intel8x0_inside_vm(void) +static int __devinit snd_intel8x0_inside_vm(struct pci_dev *pci) { - int result = inside_vm; + int result = inside_vm; + char *msg = NULL; - if (result < 0) { - /* detect KVM and Parallels virtual environments */ - result = kvm_para_available(); -#if defined(__i386__) || defined(__x86_64__) - result = result || boot_cpu_has(X86_FEATURE_HYPERVISOR); + /* check module parameter first (override detection) */ + if (result >= 0) { + msg = result ? "enable (forced) VM" : "disable (forced) VM"; + goto fini; + } + + /* detect KVM and Parallels virtual environments */ + result = kvm_para_available(); +#ifdef X86_FEATURE_HYPERVISOR + result = result || boot_cpu_has(X86_FEATURE_HYPERVISOR); #endif + if (!result) + goto fini; + + /* check for known (emulated) devices */ + if (pci->subsystem_vendor == 0x1af4 && + pci->subsystem_device == 0x1100) { + /* KVM emulated sound, PCI SSID: 1af4:1100 */ + msg = "enable KVM"; + } else if (pci->subsystem_vendor == 0x1ab8) { + /* Parallels VM emulated sound, PCI SSID: 1ab8:xxxx */ + msg = "enable Parallels VM"; + } else { + msg = "disable (unknown or VT-d) VM"; + result = 0; } - if (result) - printk(KERN_INFO "intel8x0: enable KVM optimization\n"); +fini: + if (msg != NULL) + printk(KERN_INFO "intel8x0: %s optimization\n", msg); return result; } @@ -3022,7 +3043,7 @@ static int __devinit snd_intel8x0_create(struct snd_card *card, if (xbox) chip->xbox = 1; - chip->inside_vm = snd_intel8x0_inside_vm(); + chip->inside_vm = snd_intel8x0_inside_vm(pci); if (pci->vendor == PCI_VENDOR_ID_INTEL && pci->device == PCI_DEVICE_ID_INTEL_440MX) -- cgit v1.2.3 From aeb4b88ec0a948efce8e3a23a8f964d3560a7308 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 10 Nov 2011 12:28:38 +0100 Subject: ALSA: hda - Don't add elements of other codecs to vmaster slave When a virtual mater control is created, the driver looks for slave elements from the assigned card instance. But this may include the elements of other codecs when multiple codecs are on the same HD-audio bus. This works at the first time, but it'll give Oops when it's once freed and re-created via reconfig sysfs. This patch changes the element-look-up strategy to limit only to the mixer elements of the same codec. Reported-by: David Henningsson Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 60 ++++++++++++++++++++++++++++++----------------- 1 file changed, 39 insertions(+), 21 deletions(-) (limited to 'sound/pci') diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 916a1863af73..e9136711b2d5 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -2331,6 +2331,39 @@ int snd_hda_codec_reset(struct hda_codec *codec) return 0; } +typedef int (*map_slave_func_t)(void *, struct snd_kcontrol *); + +/* apply the function to all matching slave ctls in the mixer list */ +static int map_slaves(struct hda_codec *codec, const char * const *slaves, + map_slave_func_t func, void *data) +{ + struct hda_nid_item *items; + const char * const *s; + int i, err; + + items = codec->mixers.list; + for (i = 0; i < codec->mixers.used; i++) { + struct snd_kcontrol *sctl = items[i].kctl; + if (!sctl || !sctl->id.name || + sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER) + continue; + for (s = slaves; *s; s++) { + if (!strcmp(sctl->id.name, *s)) { + err = func(data, sctl); + if (err) + return err; + break; + } + } + } + return 0; +} + +static int check_slave_present(void *data, struct snd_kcontrol *sctl) +{ + return 1; +} + /** * snd_hda_add_vmaster - create a virtual master control and add slaves * @codec: HD-audio codec @@ -2351,12 +2384,10 @@ int snd_hda_add_vmaster(struct hda_codec *codec, char *name, unsigned int *tlv, const char * const *slaves) { struct snd_kcontrol *kctl; - const char * const *s; int err; - for (s = slaves; *s && !snd_hda_find_mixer_ctl(codec, *s); s++) - ; - if (!*s) { + err = map_slaves(codec, slaves, check_slave_present, NULL); + if (err != 1) { snd_printdd("No slave found for %s\n", name); return 0; } @@ -2367,23 +2398,10 @@ int snd_hda_add_vmaster(struct hda_codec *codec, char *name, if (err < 0) return err; - for (s = slaves; *s; s++) { - struct snd_kcontrol *sctl; - int i = 0; - for (;;) { - sctl = _snd_hda_find_mixer_ctl(codec, *s, i); - if (!sctl) { - if (!i) - snd_printdd("Cannot find slave %s, " - "skipped\n", *s); - break; - } - err = snd_ctl_add_slave(kctl, sctl); - if (err < 0) - return err; - i++; - } - } + err = map_slaves(codec, slaves, (map_slave_func_t)snd_ctl_add_slave, + kctl); + if (err < 0) + return err; return 0; } EXPORT_SYMBOL_HDA(snd_hda_add_vmaster); -- cgit v1.2.3 From 2f451d2a2a44b66586b803763068195088f9ccd4 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 10 Nov 2011 12:36:46 +0100 Subject: ALSA: hda - Re-enable the check NO_PRESENCE misc bit We disabled the check of NO_PRESENCE bit of the default pin-config in commit f4419172 temporarily. One problem was that the first implementation was wrong -- the bit after the shift must be checked. However, this would still give many regressions on machines with broken BIOS. They set this bit wrongly even on active pins. A workaround is to check whether all pins contain this bit. As far as I've checked, broken BIOSen set this bit on all pins, no matter whether active or not. In such a case, the driver should ignore this bit check. Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 4 ++++ sound/pci/hda/hda_codec.h | 1 + sound/pci/hda/hda_local.h | 16 +++++++++------- 3 files changed, 14 insertions(+), 7 deletions(-) (limited to 'sound/pci') diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index e9136711b2d5..e44b107fdc75 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -4770,6 +4770,7 @@ int snd_hda_parse_pin_defcfg(struct hda_codec *codec, memset(sequences_hp, 0, sizeof(sequences_hp)); assoc_line_out = 0; + codec->ignore_misc_bit = true; end_nid = codec->start_nid + codec->num_nodes; for (nid = codec->start_nid; nid < end_nid; nid++) { unsigned int wid_caps = get_wcaps(codec, nid); @@ -4785,6 +4786,9 @@ int snd_hda_parse_pin_defcfg(struct hda_codec *codec, continue; def_conf = snd_hda_codec_get_pincfg(codec, nid); + if (!(get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) & + AC_DEFCFG_MISC_NO_PRESENCE)) + codec->ignore_misc_bit = false; conn = get_defcfg_connect(def_conf); if (conn == AC_JACK_PORT_NONE) continue; diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 755f2b0f9d8e..564471169cae 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -854,6 +854,7 @@ struct hda_codec { unsigned int no_sticky_stream:1; /* no sticky-PCM stream assignment */ unsigned int pins_shutup:1; /* pins are shut up */ unsigned int no_trigger_sense:1; /* don't trigger at pin-sensing */ + unsigned int ignore_misc_bit:1; /* ignore MISC_NO_PRESENCE bit */ #ifdef CONFIG_SND_HDA_POWER_SAVE unsigned int power_on :1; /* current (global) power-state */ unsigned int power_transition :1; /* power-state in transition */ diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index dcbea0da0fa2..6579e0f2bb57 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -510,13 +510,15 @@ int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid); static inline bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid) { - return (snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT) && - /* disable MISC_NO_PRESENCE check because it may break too - * many devices - */ - /*(get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid) & - AC_DEFCFG_MISC_NO_PRESENCE)) &&*/ - (get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP); + if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT)) + return false; + if (!codec->ignore_misc_bit && + (get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) & + AC_DEFCFG_MISC_NO_PRESENCE)) + return false; + if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP)) + return false; + return true; } /* flags for hda_nid_item */ -- cgit v1.2.3