/* Broadcom B43 wireless driver Copyright (c) 2005 Martin Langer Copyright (c) 2005 Stefano Brivio Copyright (c) 2005-2009 Michael Buesch Copyright (c) 2005 Danny van Dyk Copyright (c) 2005 Andreas Jaggi Copyright (c) 2010-2011 Rafał Miłecki SDIO support Copyright (c) 2009 Albert Herranz Some parts of the code in this file are derived from the ipw2200 driver Copyright(c) 2003 - 2004 Intel Corporation. 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; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, Boston, MA 02110-1301, USA. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "b43.h" #include "main.h" #include "debugfs.h" #include "phy_common.h" #include "phy_g.h" #include "phy_n.h" #include "dma.h" #include "pio.h" #include "sysfs.h" #include "xmit.h" #include "lo.h" #include "sdio.h" #include MODULE_DESCRIPTION("Broadcom B43 wireless driver"); MODULE_AUTHOR("Martin Langer"); MODULE_AUTHOR("Stefano Brivio"); MODULE_AUTHOR("Michael Buesch"); MODULE_AUTHOR("Gábor Stefanik"); MODULE_AUTHOR("Rafał Miłecki"); MODULE_LICENSE("GPL"); MODULE_FIRMWARE("b43/ucode11.fw"); MODULE_FIRMWARE("b43/ucode13.fw"); MODULE_FIRMWARE("b43/ucode14.fw"); MODULE_FIRMWARE("b43/ucode15.fw"); MODULE_FIRMWARE("b43/ucode16_lp.fw"); MODULE_FIRMWARE("b43/ucode16_mimo.fw"); MODULE_FIRMWARE("b43/ucode24_lcn.fw"); MODULE_FIRMWARE("b43/ucode25_lcn.fw"); MODULE_FIRMWARE("b43/ucode25_mimo.fw"); MODULE_FIRMWARE("b43/ucode26_mimo.fw"); MODULE_FIRMWARE("b43/ucode29_mimo.fw"); MODULE_FIRMWARE("b43/ucode33_lcn40.fw"); MODULE_FIRMWARE("b43/ucode30_mimo.fw"); MODULE_FIRMWARE("b43/ucode5.fw"); MODULE_FIRMWARE("b43/ucode40.fw"); MODULE_FIRMWARE("b43/ucode42.fw"); MODULE_FIRMWARE("b43/ucode9.fw"); static int modparam_bad_frames_preempt; module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444); MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames Preemption"); static char modparam_fwpostfix[16]; module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444); MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load."); static int modparam_hwpctl; module_param_named(hwpctl, modparam_hwpctl, int, 0444); MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)"); static int modparam_nohwcrypt; module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444); MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); static int modparam_hwtkip; module_param_named(hwtkip, modparam_hwtkip, int, 0444); MODULE_PARM_DESC(hwtkip, "Enable hardware tkip."); static int modparam_qos = 1; module_param_named(qos, modparam_qos, int, 0444); MODULE_PARM_DESC(qos, "Enable QOS support (default on)"); static int modparam_btcoex = 1; module_param_named(btcoex, modparam_btcoex, int, 0444); MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)"); int b43_modparam_verbose = B43_VERBOSITY_DEFAULT; module_param_named(verbose, b43_modparam_verbose, int, 0644); MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug"); static int b43_modparam_pio = 0; module_param_named(pio, b43_modparam_pio, int, 0644); MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO"); static int modparam_allhwsupport = !IS_ENABLED(CONFIG_BRCMSMAC); module_param_named(allhwsupport, modparam_allhwsupport, int, 0444); MODULE_PARM_DESC(allhwsupport, "Enable support for all hardware (even it if overlaps with the brcmsmac driver)"); #ifdef CONFIG_B43_BCMA static const struct bcma_device_id b43_bcma_tbl[] = { BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x11, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x15, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x17, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x18, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1C, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1D, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1E, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x28, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x2A, BCMA_ANY_CLASS), {}, }; MODULE_DEVICE_TABLE(bcma, b43_bcma_tbl); #endif #ifdef CONFIG_B43_SSB static const struct ssb_device_id b43_ssb_tbl[] = { SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16), {}, }; MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl); #endif /* Channel and ratetables are shared for all devices. * They can't be const, because ieee80211 puts some precalculated * data in there. This data is the same for all devices, so we don't * get concurrency issues */ #define RATETAB_ENT(_rateid, _flags) \ { \ .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \ .hw_value = (_rateid), \ .flags = (_flags), \ } /* * NOTE: When changing this, sync with xmit.c's * b43_plcp_get_bitrate_idx_* functions! */ static struct ieee80211_rate __b43_ratetable[] = { RATETAB_ENT(B43_CCK_RATE_1MB, 0), RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE), RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE), RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE), RATETAB_ENT(B43_OFDM_RATE_6MB, 0), RATETAB_ENT(B43_OFDM_RATE_9MB, 0), RATETAB_ENT(B43_OFDM_RATE_12MB, 0), RATETAB_ENT(B43_OFDM_RATE_18MB, 0), RATETAB_ENT(B43_OFDM_RATE_24MB, 0), RATETAB_ENT(B43_OFDM_RATE_36MB, 0), RATETAB_ENT(B43_OFDM_RATE_48MB, 0), RATETAB_ENT(B43_OFDM_RATE_54MB, 0), }; #define b43_a_ratetable (__b43_ratetable + 4) #define b43_a_ratetable_size 8 #define b43_b_ratetable (__b43_ratetable + 0) #define b43_b_ratetable_size 4 #define b43_g_ratetable (__b43_ratetable + 0) #define b43_g_ratetable_size 12 #define CHAN2G(_channel, _freq, _flags) { \ .band = NL80211_BAND_2GHZ, \ .center_freq = (_freq), \ .hw_value = (_channel), \ .flags = (_flags), \ .max_antenna_gain = 0, \ .max_power = 30, \ } static struct ieee80211_channel b43_2ghz_chantable[] = { CHAN2G(1, 2412, 0), CHAN2G(2, 2417, 0), CHAN2G(3, 2422, 0), CHAN2G(4, 2427, 0), CHAN2G(5, 2432, 0), CHAN2G(6, 2437, 0), CHAN2G(7, 2442, 0), CHAN2G(8, 2447, 0), CHAN2G(9, 2452, 0), CHAN2G(10, 2457, 0), CHAN2G(11, 2462, 0), CHAN2G(12, 2467, 0), CHAN2G(13, 2472, 0), CHAN2G(14, 2484, 0), }; /* No support for the last 3 channels (12, 13, 14) */ #define b43_2ghz_chantable_limited_size 11 #undef CHAN2G #define CHAN4G(_channel, _flags) { \ .band = NL80211_BAND_5GHZ, \ .center_freq = 4000 + (5 * (_channel)), \ .hw_value = (_channel), \ .flags = (_flags), \ .max_antenna_gain = 0, \ .max_power = 30, \ } #define CHAN5G(_channel, _flags) { \ .band = NL80211_BAND_5GHZ, \ .center_freq = 5000 + (5 * (_channel)), \ .hw_value = (_channel), \ .flags = (_flags), \ .max_antenna_gain = 0, \ .max_power = 30, \ } static struct ieee80211_channel b43_5ghz_nphy_chantable[] = { CHAN4G(184, 0), CHAN4G(186, 0), CHAN4G(188, 0), CHAN4G(190, 0), CHAN4G(192, 0), CHAN4G(194, 0), CHAN4G(196, 0), CHAN4G(198, 0), CHAN4G(200, 0), CHAN4G(202, 0), CHAN4G(204, 0), CHAN4G(206, 0), CHAN4G(208, 0), CHAN4G(210, 0), CHAN4G(212, 0), CHAN4G(214, 0), CHAN4G(216, 0), CHAN4G(218, 0), CHAN4G(220, 0), CHAN4G(222, 0), CHAN4G(224, 0), CHAN4G(226, 0), CHAN4G(228, 0), CHAN5G(32, 0), CHAN5G(34, 0), CHAN5G(36, 0), CHAN5G(38, 0), CHAN5G(40, 0), CHAN5G(42, 0), CHAN5G(44, 0), CHAN5G(46, 0), CHAN5G(48, 0), CHAN5G(50, 0), CHAN5G(52, 0), CHAN5G(54, 0), CHAN5G(56, 0), CHAN5G(58, 0), CHAN5G(60, 0), CHAN5G(62, 0), CHAN5G(64, 0), CHAN5G(66, 0), CHAN5G(68, 0), CHAN5G(70, 0), CHAN5G(72, 0), CHAN5G(74, 0), CHAN5G(76, 0), CHAN5G(78, 0), CHAN5G(80, 0), CHAN5G(82, 0), CHAN5G(84, 0), CHAN5G(86, 0), CHAN5G(88, 0), CHAN5G(90, 0), CHAN5G(92, 0), CHAN5G(94, 0), CHAN5G(96, 0), CHAN5G(98, 0), CHAN5G(100, 0), CHAN5G(102, 0), CHAN5G(104, 0), CHAN5G(106, 0), CHAN5G(108, 0), CHAN5G(110, 0), CHAN5G(112, 0), CHAN5G(114, 0), CHAN5G(116, 0), CHAN5G(118, 0), CHAN5G(120, 0), CHAN5G(122, 0), CHAN5G(124, 0), CHAN5G(126, 0), CHAN5G(128, 0), CHAN5G(130, 0), CHAN5G(132, 0), CHAN5G(134, 0), CHAN5G(136, 0), CHAN5G(138, 0), CHAN5G(140, 0), CHAN5G(142, 0), CHAN5G(144, 0), CHAN5G(145, 0), CHAN5G(146, 0), CHAN5G(147, 0), CHAN5G(148, 0), CHAN5G(149, 0), CHAN5G(150, 0), CHAN5G(151, 0), CHAN5G(152, 0), CHAN5G(153, 0), CHAN5G(154, 0), CHAN5G(155, 0), CHAN5G(156, 0), CHAN5G(157, 0), CHAN5G(158, 0), CHAN5G(159, 0), CHAN5G(160, 0), CHAN5G(161, 0), CHAN5G(162, 0), CHAN5G(163, 0), CHAN5G(164, 0), CHAN5G(165, 0), CHAN5G(166, 0), CHAN5G(168, 0), CHAN5G(170, 0), CHAN5G(172, 0), CHAN5G(174, 0), CHAN5G(176, 0), CHAN5G(178, 0), CHAN5G(180, 0), CHAN5G(182, 0), }; static struct ieee80211_channel b43_5ghz_nphy_chantable_limited[] = { CHAN5G(36, 0), CHAN5G(40, 0), CHAN5G(44, 0), CHAN5G(48, 0), CHAN5G(149, 0), CHAN5G(153, 0), CHAN5G(157, 0), CHAN5G(161, 0), CHAN5G(165, 0), }; static struct ieee80211_channel b43_5ghz_aphy_chantable[] = { CHAN5G(34, 0), CHAN5G(36, 0), CHAN5G(38, 0), CHAN5G(40, 0), CHAN5G(42, 0), CHAN5G(44, 0), CHAN5G(46, 0), CHAN5G(48, 0), CHAN5G(52, 0), CHAN5G(56, 0), CHAN5G(60, 0), CHAN5G(64, 0), CHAN5G(100, 0), CHAN5G(104, 0), CHAN5G(108, 0), CHAN5G(112, 0), CHAN5G(116, 0), CHAN5G(120, 0), CHAN5G(124, 0), CHAN5G(128, 0), CHAN5G(132, 0), CHAN5G(136, 0), CHAN5G(140, 0), CHAN5G(149, 0), CHAN5G(153, 0), CHAN5G(157, 0), CHAN5G(161, 0), CHAN5G(165, 0), CHAN5G(184, 0), CHAN5G(188, 0), CHAN5G(192, 0), CHAN5G(196, 0), CHAN5G(200, 0), CHAN5G(204, 0), CHAN5G(208, 0), CHAN5G(212, 0), CHAN5G(216, 0), }; #undef CHAN4G #undef CHAN5G static struct ieee80211_supported_band b43_band_5GHz_nphy = { .band = NL80211_BAND_5GHZ, .channels = b43_5ghz_nphy_chantable, .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable), .bitrates = b43_a_ratetable, .n_bitrates = b43_a_ratetable_size, }; static struct ieee80211_supported_band b43_band_5GHz_nphy_limited = { .band = NL80211_BAND_5GHZ, .channels = b43_5ghz_nphy_chantable_limited, .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable_limited), .bitrates = b43_a_ratetable, .n_bitrates = b43_a_ratetable_size, }; static struct ieee80211_supported_band b43_band_5GHz_aphy = { .band = NL80211_BAND_5GHZ, .channels = b43_5ghz_aphy_chantable, .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable), .bitrates = b43_a_ratetable, .n_bitrates = b43_a_ratetable_size, }; static struct ieee80211_supported_band b43_band_2GHz = { .band = NL80211_BAND_2GHZ, .channels = b43_2ghz_chantable, .n_channels = ARRAY_SIZE(b43_2ghz_chantable), .bitrates = b43_g_ratetable, .n_bitrates = b43_g_ratetable_size, }; static struct ieee80211_supported_band b43_band_2ghz_limited = { .band = NL80211_BAND_2GHZ, .channels = b43_2ghz_chantable, .n_channels = b43_2ghz_chantable_limited_size, .bitrates = b43_g_ratetable, .n_bitrates = b43_g_ratetable_size, }; static void b43_wireless_core_exit(struct b43_wldev *dev); static int b43_wireless_core_init(struct b43_wldev *dev); static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev); static int b43_wireless_core_start(struct b43_wldev *dev); static void b43_op_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf, u32 changed); static int b43_ratelimit(struct b43_wl *wl) { if (!wl || !wl->current_dev) return 1; if (b43_status(wl->current_dev) < B43_STAT_STARTED) return 1; /* We are up and running. * Ratelimit the messages to avoid DoS over the net. */ return net_ratelimit(); } void b43info(struct b43_wl *wl, const char *fmt, ...) { struct va_format vaf; va_list args; if (b43_modparam_verbose < B43_VERBOSITY_INFO) return; if (!b43_ratelimit(wl)) return; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; printk(KERN_INFO "b43-%s: %pV", (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); va_end(args); } void b43err(struct b43_wl *wl, const char *fmt, ...) { struct va_format vaf; va_list args; if (b43_modparam_verbose < B43_VERBOSITY_ERROR) return; if (!b43_ratelimit(wl)) return; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; printk(KERN_ERR "b43-%s ERROR: %pV", (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); va_end(args); } void b43warn(struct b43_wl *wl, const char *fmt, ...) { struct va_format vaf; va_list args; if (b43_modparam_verbose < B43_VERBOSITY_WARN) return; if (!b43_ratelimit(wl)) return; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; printk(KERN_WARNING "b43-%s warning: %pV", (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); va_end(args); } void b43dbg(struct b43_wl *wl, const char *fmt, ...) { struct va_format vaf; va_list args; if (b43_modparam_verbose < B43_VERBOSITY_DEBUG) return; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; printk(KERN_DEBUG "b43-%s debug: %pV", (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); va_end(args); } static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val) { u32 macctl; B43_WARN_ON(offset % 4 != 0); macctl = b43_read32(dev, B43_MMIO_MACCTL); if (macctl & B43_MACCTL_BE) val = swab32(val); b43_write32(dev, B43_MMIO_RAM_CONTROL, offset); mmiowb(); b43_write32(dev, B43_MMIO_RAM_DATA, val); } static inline void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset) { u32 control; /* "offset" is the WORD offset. */ control = routing; control <<= 16; control |= offset; b43_write32(dev, B43_MMIO_SHM_CONTROL, control); } u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset) { u32 ret; if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); if (offset & 0x0003) { /* Unaligned access */ b43_shm_control_word(dev, routing, offset >> 2); ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); b43_shm_control_word(dev, routing, (offset >> 2) + 1); ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16; goto out; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); ret = b43_read32(dev, B43_MMIO_SHM_DATA); out: return ret; } u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset) { u16 ret; if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); if (offset & 0x0003) { /* Unaligned access */ b43_shm_control_word(dev, routing, offset >> 2); ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); goto out; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); ret = b43_read16(dev, B43_MMIO_SHM_DATA); out: return ret; } void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value) { if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); if (offset & 0x0003) { /* Unaligned access */ b43_shm_control_word(dev, routing, offset >> 2); b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value & 0xFFFF); b43_shm_control_word(dev, routing, (offset >> 2) + 1); b43_write16(dev, B43_MMIO_SHM_DATA, (value >> 16) & 0xFFFF); return; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); b43_write32(dev, B43_MMIO_SHM_DATA, value); } void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value) { if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); if (offset & 0x0003) { /* Unaligned access */ b43_shm_control_word(dev, routing, offset >> 2); b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value); return; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); b43_write16(dev, B43_MMIO_SHM_DATA, value); } /* Read HostFlags */ u64 b43_hf_read(struct b43_wldev *dev) { u64 ret; ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF3); ret <<= 16; ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF2); ret <<= 16; ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF1); return ret; } /* Write HostFlags */ void b43_hf_write(struct b43_wldev *dev, u64 value) { u16 lo, mi, hi; lo = (value & 0x00000000FFFFULL); mi = (value & 0x0000FFFF0000ULL) >> 16; hi = (value & 0xFFFF00000000ULL) >> 32; b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF1, lo); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF2, mi); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF3, hi); } /* Read the firmware capabilities bitmask (Opensource firmware only) */ static u16 b43_fwcapa_read(struct b43_wldev *dev) { B43_WARN_ON(!dev->fw.opensource); return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA); } void b43_tsf_read(struct b43_wldev *dev, u64 *tsf) { u32 low, high; B43_WARN_ON(dev->dev->core_rev < 3); /* The hardware guarantees us an atomic read, if we * read the low register first. */ low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW); high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH); *tsf = high; *tsf <<= 32; *tsf |= low; } static void b43_time_lock(struct b43_wldev *dev) { b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_TBTTHOLD); /* Commit the write */ b43_read32(dev, B43_MMIO_MACCTL); } static void b43_time_unlock(struct b43_wldev *dev) { b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_TBTTHOLD, 0); /* Commit the write */ b43_read32(dev, B43_MMIO_MACCTL); } static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf) { u32 low, high; B43_WARN_ON(dev->dev->core_rev < 3); low = tsf; high = (tsf >> 32); /* The hardware guarantees us an atomic write, if we * write the low register first. */ b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low); mmiowb(); b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high); mmiowb(); } void b43_tsf_write(struct b43_wldev *dev, u64 tsf) { b43_time_lock(dev); b43_tsf_write_locked(dev, tsf); b43_time_unlock(dev); } static void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac) { static const u8 zero_addr[ETH_ALEN] = { 0 }; u16 data; if (!mac) mac = zero_addr; offset |= 0x0020; b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset); data = mac[0]; data |= mac[1] << 8; b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); data = mac[2]; data |= mac[3] << 8; b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); data = mac[4]; data |= mac[5] << 8; b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); } static void b43_write_mac_bssid_templates(struct b43_wldev *dev) { const u8 *mac; const u8 *bssid; u8 mac_bssid[ETH_ALEN * 2]; int i; u32 tmp; bssid = dev->wl->bssid; mac = dev->wl->mac_addr; b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid); memcpy(mac_bssid, mac, ETH_ALEN); memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN); /* Write our MAC address and BSSID to template ram */ for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) { tmp = (u32) (mac_bssid[i + 0]); tmp |= (u32) (mac_bssid[i + 1]) << 8; tmp |= (u32) (mac_bssid[i + 2]) << 16; tmp |= (u32) (mac_bssid[i + 3]) << 24; b43_ram_write(dev, 0x20 + i, tmp); } } static void b43_upload_card_macaddress(struct b43_wldev *dev) { b43_write_mac_bssid_templates(dev); b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr); } static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time) { /* slot_time is in usec. */ /* This test used to exit for all but a G PHY. */ if (b43_current_band(dev->wl) == NL80211_BAND_5GHZ) return; b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time); /* Shared memory location 0x0010 is the slot time and should be * set to slot_time; however, this register is initially 0 and changing * the value adversely affects the transmit rate for BCM4311 * devices. Until this behavior is unterstood, delete this step * * b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time); */ } static void b43_short_slot_timing_enable(struct b43_wldev *dev) { b43_set_slot_time(dev, 9); } static void b43_short_slot_timing_disable(struct b43_wldev *dev) { b43_set_slot_time(dev, 20); } /* DummyTransmission function, as documented on * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission */ void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on) { struct b43_phy *phy = &dev->phy; unsigned int i, max_loop; u16 value; u32 buffer[5] = { 0x00000000, 0x00D40000, 0x00000000, 0x01000000, 0x00000000, }; if (ofdm) { max_loop = 0x1E; buffer[0] = 0x000201CC; } else { max_loop = 0xFA; buffer[0] = 0x000B846E; } for (i = 0; i < 5; i++) b43_ram_write(dev, i * 4, buffer[i]); b43_write16(dev, B43_MMIO_XMTSEL, 0x0000); if (dev->dev->core_rev < 11) b43_write16(dev, B43_MMIO_WEPCTL, 0x0000); else b43_write16(dev, B43_MMIO_WEPCTL, 0x0100); value = (ofdm ? 0x41 : 0x40); b43_write16(dev, B43_MMIO_TXE0_PHYCTL, value); if (phy->type == B43_PHYTYPE_N || phy->type == B43_PHYTYPE_LP || phy->type == B43_PHYTYPE_LCN) b43_write16(dev, B43_MMIO_TXE0_PHYCTL1, 0x1A02); b43_write16(dev, B43_MMIO_TXE0_WM_0, 0x0000); b43_write16(dev, B43_MMIO_TXE0_WM_1, 0x0000); b43_write16(dev, B43_MMIO_XMTTPLATETXPTR, 0x0000); b43_write16(dev, B43_MMIO_XMTTXCNT, 0x0014); b43_write16(dev, B43_MMIO_XMTSEL, 0x0826); b43_write16(dev, B43_MMIO_TXE0_CTL, 0x0000); if (!pa_on && phy->type == B43_PHYTYPE_N) ; /*b43_nphy_pa_override(dev, false) */ switch (phy->type) { case B43_PHYTYPE_N: case B43_PHYTYPE_LCN: b43_write16(dev, B43_MMIO_TXE0_AUX, 0x00D0); break; case B43_PHYTYPE_LP: b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0050); break; default: b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0030); } b43_read16(dev, B43_MMIO_TXE0_AUX); if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) b43_radio_write16(dev, 0x0051, 0x0017); for (i = 0x00; i < max_loop; i++) { value = b43_read16(dev, B43_MMIO_TXE0_STATUS); if (value & 0x0080) break; udelay(10); } for (i = 0x00; i < 0x0A; i++) { value = b43_read16(dev, B43_MMIO_TXE0_STATUS); if (value & 0x0400) break; udelay(10); } for (i = 0x00; i < 0x19; i++) { value = b43_read16(dev, B43_MMIO_IFSSTAT); if (!(value & 0x0100)) break; udelay(10); } if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) b43_radio_write16(dev, 0x0051, 0x0037); } static void key_write(struct b43_wldev *dev, u8 index, u8 algorithm, const u8 *key) { unsigned int i; u32 offset; u16 value; u16 kidx; /* Key index/algo block */ kidx = b43_kidx_to_fw(dev, index); value = ((kidx << 4) | algorithm); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value); /* Write the key to the Key Table Pointer offset */ offset = dev->ktp + (index * B43_SEC_KEYSIZE); for (i = 0; i < B43_SEC_KEYSIZE; i += 2) { value = key[i]; value |= (u16) (key[i + 1]) << 8; b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value); } } static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr) { u32 addrtmp[2] = { 0, 0, }; u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2; if (b43_new_kidx_api(dev)) pairwise_keys_start = B43_NR_GROUP_KEYS; B43_WARN_ON(index < pairwise_keys_start); /* We have four default TX keys and possibly four default RX keys. * Physical mac 0 is mapped to physical key 4 or 8, depending * on the firmware version. * So we must adjust the index here. */ index -= pairwise_keys_start; B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS); if (addr) { addrtmp[0] = addr[0]; addrtmp[0] |= ((u32) (addr[1]) << 8); addrtmp[0] |= ((u32) (addr[2]) << 16); addrtmp[0] |= ((u32) (addr[3]) << 24); addrtmp[1] = addr[4]; addrtmp[1] |= ((u32) (addr[5]) << 8); } /* Receive match transmitter address (RCMTA) mechanism */ b43_shm_write32(dev, B43_SHM_RCMTA, (index * 2) + 0, addrtmp[0]); b43_shm_write16(dev, B43_SHM_RCMTA, (index * 2) + 1, addrtmp[1]); } /* The ucode will use phase1 key with TEK key to decrypt rx packets. * When a packet is received, the iv32 is checked. * - if it doesn't the packet is returned without modification (and software * decryption can be done). That's what happen when iv16 wrap. * - if it does, the rc4 key is computed, and decryption is tried. * Either it will success and B43_RX_MAC_DEC is returned, * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned * and the packet is not usable (it got modified by the ucode). * So in order to never have B43_RX_MAC_DECERR, we should provide * a iv32 and phase1key that match. Because we drop packets in case of * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all * packets will be lost without higher layer knowing (ie no resync possible * until next wrap). * * NOTE : this should support 50 key like RCMTA because * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50 */ static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32, u16 *phase1key) { unsigned int i; u32 offset; u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2; if (!modparam_hwtkip) return; if (b43_new_kidx_api(dev)) pairwise_keys_start = B43_NR_GROUP_KEYS; B43_WARN_ON(index < pairwise_keys_start); /* We have four default TX keys and possibly four default RX keys. * Physical mac 0 is mapped to physical key 4 or 8, depending * on the firmware version. * So we must adjust the index here. */ index -= pairwise_keys_start; B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS); if (b43_debug(dev, B43_DBG_KEYS)) { b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n", index, iv32); } /* Write the key to the RX tkip shared mem */ offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4); for (i = 0; i < 10; i += 2) { b43_shm_write16(dev, B43_SHM_SHARED, offset + i, phase1key ? phase1key[i / 2] : 0); } b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32); b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16); } static void b43_op_update_tkip_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_key_conf *keyconf, struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; int index = keyconf->hw_key_idx; if (B43_WARN_ON(!modparam_hwtkip)) return; /* This is only called from the RX path through mac80211, where * our mutex is already locked. */ B43_WARN_ON(!mutex_is_locked(&wl->mutex)); dev = wl->current_dev; B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED); keymac_write(dev, index, NULL); /* First zero out mac to avoid race */ rx_tkip_phase1_write(dev, index, iv32, phase1key); /* only pairwise TKIP keys are supported right now */ if (WARN_ON(!sta)) return; keymac_write(dev, index, sta->addr); } static void do_key_write(struct b43_wldev *dev, u8 index, u8 algorithm, const u8 *key, size_t key_len, const u8 *mac_addr) { u8 buf[B43_SEC_KEYSIZE] = { 0, }; u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2; if (b43_new_kidx_api(dev)) pairwise_keys_start = B43_NR_GROUP_KEYS; B43_WARN_ON(index >= ARRAY_SIZE(dev->key)); B43_WARN_ON(key_len > B43_SEC_KEYSIZE); if (index >= pairwise_keys_start) keymac_write(dev, index, NULL); /* First zero out mac. */ if (algorithm == B43_SEC_ALGO_TKIP) { /* * We should provide an initial iv32, phase1key pair. * We could start with iv32=0 and compute the corresponding * phase1key, but this means calling ieee80211_get_tkip_key * with a fake skb (or export other tkip function). * Because we are lazy we hope iv32 won't start with * 0xffffffff and let's b43_op_update_tkip_key provide a * correct pair. */ rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf); } else if (index >= pairwise_keys_start) /* clear it */ rx_tkip_phase1_write(dev, index, 0, NULL); if (key) memcpy(buf, key, key_len); key_write(dev, index, algorithm, buf); if (index >= pairwise_keys_start) keymac_write(dev, index, mac_addr); dev->key[index].algorithm = algorithm; } static int b43_key_write(struct b43_wldev *dev, int index, u8 algorithm, const u8 *key, size_t key_len, const u8 *mac_addr, struct ieee80211_key_conf *keyconf) { int i; int pairwise_keys_start; /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block: * - Temporal Encryption Key (128 bits) * - Temporal Authenticator Tx MIC Key (64 bits) * - Temporal Authenticator Rx MIC Key (64 bits) * * Hardware only store TEK */ if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32) key_len = 16; if (key_len > B43_SEC_KEYSIZE) return -EINVAL; for (i = 0; i < ARRAY_SIZE(dev->key); i++) { /* Check that we don't already have this key. */ B43_WARN_ON(dev->key[i].keyconf == keyconf); } if (index < 0) { /* Pairwise key. Get an empty slot for the key. */ if (b43_new_kidx_api(dev)) pairwise_keys_start = B43_NR_GROUP_KEYS; else pairwise_keys_start = B43_NR_GROUP_KEYS * 2; for (i = pairwise_keys_start; i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS; i++) { B43_WARN_ON(i >= ARRAY_SIZE(dev->key)); if (!dev->key[i].keyconf) { /* found empty */ index = i; break; } } if (index < 0) { b43warn(dev->wl, "Out of hardware key memory\n"); return -ENOSPC; } } else B43_WARN_ON(index > 3); do_key_write(dev, index, algorithm, key, key_len, mac_addr); if ((index <= 3) && !b43_new_kidx_api(dev)) { /* Default RX key */ B43_WARN_ON(mac_addr); do_key_write(dev, index + 4, algorithm, key, key_len, NULL); } keyconf->hw_key_idx = index; dev->key[index].keyconf = keyconf; return 0; } static int b43_key_clear(struct b43_wldev *dev, int index) { if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key)))) return -EINVAL; do_key_write(dev, index, B43_SEC_ALGO_NONE, NULL, B43_SEC_KEYSIZE, NULL); if ((index <= 3) && !b43_new_kidx_api(dev)) { do_key_write(dev, index + 4, B43_SEC_ALGO_NONE, NULL, B43_SEC_KEYSIZE, NULL); } dev->key[index].keyconf = NULL; return 0; } static void b43_clear_keys(struct b43_wldev *dev) { int i, count; if (b43_new_kidx_api(dev)) count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS; else count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS; for (i = 0; i < count; i++) b43_key_clear(dev, i); } static void b43_dump_keymemory(struct b43_wldev *dev) { unsigned int i, index, count, offset, pairwise_keys_start; u8 mac[ETH_ALEN]; u16 algo; u32 rcmta0; u16 rcmta1; u64 hf; struct b43_key *key; if (!b43_debug(dev, B43_DBG_KEYS)) return; hf = b43_hf_read(dev); b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n", !!(hf & B43_HF_USEDEFKEYS)); if (b43_new_kidx_api(dev)) { pairwise_keys_start = B43_NR_GROUP_KEYS; count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS; } else { pairwise_keys_start = B43_NR_GROUP_KEYS * 2; count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS; } for (index = 0; index < count; index++) { key = &(dev->key[index]); printk(KERN_DEBUG "Key slot %02u: %s", index, (key->keyconf == NULL) ? " " : "*"); offset = dev->ktp + (index * B43_SEC_KEYSIZE); for (i = 0; i < B43_SEC_KEYSIZE; i += 2) { u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i); printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF)); } algo = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KEYIDXBLOCK + (index * 2)); printk(" Algo: %04X/%02X", algo, key->algorithm); if (index >= pairwise_keys_start) { if (key->algorithm == B43_SEC_ALGO_TKIP) { printk(" TKIP: "); offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4); for (i = 0; i < 14; i += 2) { u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i); printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF)); } } rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA, ((index - pairwise_keys_start) * 2) + 0); rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA, ((index - pairwise_keys_start) * 2) + 1); *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0); *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1); printk(" MAC: %pM", mac); } else printk(" DEFAULT KEY"); printk("\n"); } } void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags) { u32 macctl; u16 ucstat; bool hwps; bool awake; int i; B43_WARN_ON((ps_flags & B43_PS_ENABLED) && (ps_flags & B43_PS_DISABLED)); B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP)); if (ps_flags & B43_PS_ENABLED) { hwps = true; } else if (ps_flags & B43_PS_DISABLED) { hwps = false; } else { //TODO: If powersave is not off and FIXME is not set and we are not in adhoc // and thus is not an AP and we are associated, set bit 25 } if (ps_flags & B43_PS_AWAKE) { awake = true; } else if (ps_flags & B43_PS_ASLEEP) { awake = false; } else { //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME, // or we are associated, or FIXME, or the latest PS-Poll packet sent was // successful, set bit26 } /* FIXME: For now we force awake-on and hwps-off */ hwps = false; awake = true; macctl = b43_read32(dev, B43_MMIO_MACCTL); if (hwps) macctl |= B43_MACCTL_HWPS; else macctl &= ~B43_MACCTL_HWPS; if (awake) macctl |= B43_MACCTL_AWAKE; else macctl &= ~B43_MACCTL_AWAKE; b43_write32(dev, B43_MMIO_MACCTL, macctl); /* Commit write */ b43_read32(dev, B43_MMIO_MACCTL); if (awake && dev->dev->core_rev >= 5) { /* Wait for the microcode to wake up. */ for (i = 0; i < 100; i++) { ucstat = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODESTAT); if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP) break; udelay(10); } } } /* http://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */ void b43_wireless_core_phy_pll_reset(struct b43_wldev *dev) { struct bcma_drv_cc *bcma_cc __maybe_unused; struct ssb_chipcommon *ssb_cc __maybe_unused; switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: bcma_cc = &dev->dev->bdev->bus->drv_cc; bcma_cc_write32(bcma_cc, BCMA_CC_PMU_CHIPCTL_ADDR, 0); bcma_cc_mask32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, ~0x4); bcma_cc_set32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, 0x4); bcma_cc_mask32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, ~0x4); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: ssb_cc = &dev->dev->sdev->bus->chipco; chipco_write32(ssb_cc, SSB_CHIPCO_CHIPCTL_ADDR, 0); chipco_mask32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, ~0x4); chipco_set32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, 0x4); chipco_mask32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, ~0x4); break; #endif } } #ifdef CONFIG_B43_BCMA static void b43_bcma_phy_reset(struct b43_wldev *dev) { u32 flags; /* Put PHY into reset */ flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL); flags |= B43_BCMA_IOCTL_PHY_RESET; flags |= B43_BCMA_IOCTL_PHY_BW_20MHZ; /* Make 20 MHz def */ bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags); udelay(2); b43_phy_take_out_of_reset(dev); } static void b43_bcma_wireless_core_reset(struct b43_wldev *dev, bool gmode) { u32 req = B43_BCMA_CLKCTLST_80211_PLL_REQ | B43_BCMA_CLKCTLST_PHY_PLL_REQ; u32 status = B43_BCMA_CLKCTLST_80211_PLL_ST | B43_BCMA_CLKCTLST_PHY_PLL_ST; u32 flags; flags = B43_BCMA_IOCTL_PHY_CLKEN; if (gmode) flags |= B43_BCMA_IOCTL_GMODE; b43_device_enable(dev, flags); if (dev->phy.type == B43_PHYTYPE_AC) { u16 tmp; tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL); tmp &= ~B43_BCMA_IOCTL_DAC; tmp |= 0x100; bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp); tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL); tmp &= ~B43_BCMA_IOCTL_PHY_CLKEN; bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp); tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL); tmp |= B43_BCMA_IOCTL_PHY_CLKEN; bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp); } bcma_core_set_clockmode(dev->dev->bdev, BCMA_CLKMODE_FAST); b43_bcma_phy_reset(dev); bcma_core_pll_ctl(dev->dev->bdev, req, status, true); } #endif #ifdef CONFIG_B43_SSB static void b43_ssb_wireless_core_reset(struct b43_wldev *dev, bool gmode) { u32 flags = 0; if (gmode) flags |= B43_TMSLOW_GMODE; flags |= B43_TMSLOW_PHYCLKEN; flags |= B43_TMSLOW_PHYRESET; if (dev->phy.type == B43_PHYTYPE_N) flags |= B43_TMSLOW_PHY_BANDWIDTH_20MHZ; /* Make 20 MHz def */ b43_device_enable(dev, flags); msleep(2); /* Wait for the PLL to turn on. */ b43_phy_take_out_of_reset(dev); } #endif void b43_wireless_core_reset(struct b43_wldev *dev, bool gmode) { u32 macctl; switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: b43_bcma_wireless_core_reset(dev, gmode); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: b43_ssb_wireless_core_reset(dev, gmode); break; #endif } /* Turn Analog ON, but only if we already know the PHY-type. * This protects against very early setup where we don't know the * PHY-type, yet. wireless_core_reset will be called once again later, * when we know the PHY-type. */ if (dev->phy.ops) dev->phy.ops->switch_analog(dev, 1); macctl = b43_read32(dev, B43_MMIO_MACCTL); macctl &= ~B43_MACCTL_GMODE; if (gmode) macctl |= B43_MACCTL_GMODE; macctl |= B43_MACCTL_IHR_ENABLED; b43_write32(dev, B43_MMIO_MACCTL, macctl); } static void handle_irq_transmit_status(struct b43_wldev *dev) { u32 v0, v1; u16 tmp; struct b43_txstatus stat; while (1) { v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0); if (!(v0 & 0x00000001)) break; v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1); stat.cookie = (v0 >> 16); stat.seq = (v1 & 0x0000FFFF); stat.phy_stat = ((v1 & 0x00FF0000) >> 16); tmp = (v0 & 0x0000FFFF); stat.frame_count = ((tmp & 0xF000) >> 12); stat.rts_count = ((tmp & 0x0F00) >> 8); stat.supp_reason = ((tmp & 0x001C) >> 2); stat.pm_indicated = !!(tmp & 0x0080); stat.intermediate = !!(tmp & 0x0040); stat.for_ampdu = !!(tmp & 0x0020); stat.acked = !!(tmp & 0x0002); b43_handle_txstatus(dev, &stat); } } static void drain_txstatus_queue(struct b43_wldev *dev) { u32 dummy; if (dev->dev->core_rev < 5) return; /* Read all entries from the microcode TXstatus FIFO * and throw them away. */ while (1) { dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0); if (!(dummy & 0x00000001)) break; dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1); } } static u32 b43_jssi_read(struct b43_wldev *dev) { u32 val = 0; val = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI1); val <<= 16; val |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI0); return val; } static void b43_jssi_write(struct b43_wldev *dev, u32 jssi) { b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI0, (jssi & 0x0000FFFF)); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI1, (jssi & 0xFFFF0000) >> 16); } static void b43_generate_noise_sample(struct b43_wldev *dev) { b43_jssi_write(dev, 0x7F7F7F7F); b43_write32(dev, B43_MMIO_MACCMD, b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE); } static void b43_calculate_link_quality(struct b43_wldev *dev) { /* Top half of Link Quality calculation. */ if (dev->phy.type != B43_PHYTYPE_G) return; if (dev->noisecalc.calculation_running) return; dev->noisecalc.calculation_running = true; dev->noisecalc.nr_samples = 0; b43_generate_noise_sample(dev); } static void handle_irq_noise(struct b43_wldev *dev) { struct b43_phy_g *phy = dev->phy.g; u16 tmp; u8 noise[4]; u8 i, j; s32 average; /* Bottom half of Link Quality calculation. */ if (dev->phy.type != B43_PHYTYPE_G) return; /* Possible race condition: It might be possible that the user * changed to a different channel in the meantime since we * started the calculation. We ignore that fact, since it's * not really that much of a problem. The background noise is * an estimation only anyway. Slightly wrong results will get damped * by the averaging of the 8 sample rounds. Additionally the * value is shortlived. So it will be replaced by the next noise * calculation round soon. */ B43_WARN_ON(!dev->noisecalc.calculation_running); *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev)); if (noise[0] == 0x7F || noise[1] == 0x7F || noise[2] == 0x7F || noise[3] == 0x7F) goto generate_new; /* Get the noise samples. */ B43_WARN_ON(dev->noisecalc.nr_samples >= 8); i = dev->noisecalc.nr_samples; noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]]; dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]]; dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]]; dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]]; dev->noisecalc.nr_samples++; if (dev->noisecalc.nr_samples == 8) { /* Calculate the Link Quality by the noise samples. */ average = 0; for (i = 0; i < 8; i++) { for (j = 0; j < 4; j++) average += dev->noisecalc.samples[i][j]; } average /= (8 * 4); average *= 125; average += 64; average /= 128; tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C); tmp = (tmp / 128) & 0x1F; if (tmp >= 8) average += 2; else average -= 25; if (tmp == 8) average -= 72; else average -= 48; dev->stats.link_noise = average; dev->noisecalc.calculation_running = false; return; } generate_new: b43_generate_noise_sample(dev); } static void handle_irq_tbtt_indication(struct b43_wldev *dev) { if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) { ///TODO: PS TBTT } else { if (1 /*FIXME: the last PSpoll frame was sent successfully */ ) b43_power_saving_ctl_bits(dev, 0); } if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) dev->dfq_valid = true; } static void handle_irq_atim_end(struct b43_wldev *dev) { if (dev->dfq_valid) { b43_write32(dev, B43_MMIO_MACCMD, b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_DFQ_VALID); dev->dfq_valid = false; } } static void handle_irq_pmq(struct b43_wldev *dev) { u32 tmp; //TODO: AP mode. while (1) { tmp = b43_read32(dev, B43_MMIO_PS_STATUS); if (!(tmp & 0x00000008)) break; } /* 16bit write is odd, but correct. */ b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002); } static void b43_write_template_common(struct b43_wldev *dev, const u8 *data, u16 size, u16 ram_offset, u16 shm_size_offset, u8 rate) { u32 i, tmp; struct b43_plcp_hdr4 plcp; plcp.data = 0; b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data)); ram_offset += sizeof(u32); /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet. * So leave the first two bytes of the next write blank. */ tmp = (u32) (data[0]) << 16; tmp |= (u32) (data[1]) << 24; b43_ram_write(dev, ram_offset, tmp); ram_offset += sizeof(u32); for (i = 2; i < size; i += sizeof(u32)) { tmp = (u32) (data[i + 0]); if (i + 1 < size) tmp |= (u32) (data[i + 1]) << 8; if (i + 2 < size) tmp |= (u32) (data[i + 2]) << 16; if (i + 3 < size) tmp |= (u32) (data[i + 3]) << 24; b43_ram_write(dev, ram_offset + i - 2, tmp); } b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset, size + sizeof(struct b43_plcp_hdr6)); } /* Check if the use of the antenna that ieee80211 told us to * use is possible. This will fall back to DEFAULT. * "antenna_nr" is the antenna identifier we got from ieee80211. */ u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev, u8 antenna_nr) { u8 antenna_mask; if (antenna_nr == 0) { /* Zero means "use default antenna". That's always OK. */ return 0; } /* Get the mask of available antennas. */ if (dev->phy.gmode) antenna_mask = dev->dev->bus_sprom->ant_available_bg; else antenna_mask = dev->dev->bus_sprom->ant_available_a; if (!(antenna_mask & (1 << (antenna_nr - 1)))) { /* This antenna is not available. Fall back to default. */ return 0; } return antenna_nr; } /* Convert a b43 antenna number value to the PHY TX control value. */ static u16 b43_antenna_to_phyctl(int antenna) { switch (antenna) { case B43_ANTENNA0: return B43_TXH_PHY_ANT0; case B43_ANTENNA1: return B43_TXH_PHY_ANT1; case B43_ANTENNA2: return B43_TXH_PHY_ANT2; case B43_ANTENNA3: return B43_TXH_PHY_ANT3; case B43_ANTENNA_AUTO0: case B43_ANTENNA_AUTO1: return B43_TXH_PHY_ANT01AUTO; } B43_WARN_ON(1); return 0; } static void b43_write_beacon_template(struct b43_wldev *dev, u16 ram_offset, u16 shm_size_offset) { unsigned int i, len, variable_len; const struct ieee80211_mgmt *bcn; const u8 *ie; bool tim_found = false; unsigned int rate; u16 ctl; int antenna; struct ieee80211_tx_info *info; unsigned long flags; struct sk_buff *beacon_skb; spin_lock_irqsave(&dev->wl->beacon_lock, flags); info = IEEE80211_SKB_CB(dev->wl->current_beacon); rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value; /* Clone the beacon, so it cannot go away, while we write it to hw. */ beacon_skb = skb_clone(dev->wl->current_beacon, GFP_ATOMIC); spin_unlock_irqrestore(&dev->wl->beacon_lock, flags); if (!beacon_skb) { b43dbg(dev->wl, "Could not upload beacon. " "Failed to clone beacon skb."); return; } bcn = (const struct ieee80211_mgmt *)(beacon_skb->data); len = min_t(size_t, beacon_skb->len, 0x200 - sizeof(struct b43_plcp_hdr6)); b43_write_template_common(dev, (const u8 *)bcn, len, ram_offset, shm_size_offset, rate); /* Write the PHY TX control parameters. */ antenna = B43_ANTENNA_DEFAULT; antenna = b43_antenna_to_phyctl(antenna); ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL); /* We can't send beacons with short preamble. Would get PHY errors. */ ctl &= ~B43_TXH_PHY_SHORTPRMBL; ctl &= ~B43_TXH_PHY_ANT; ctl &= ~B43_TXH_PHY_ENC; ctl |= antenna; if (b43_is_cck_rate(rate)) ctl |= B43_TXH_PHY_ENC_CCK; else ctl |= B43_TXH_PHY_ENC_OFDM; b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl); /* Find the position of the TIM and the DTIM_period value * and write them to SHM. */ ie = bcn->u.beacon.variable; variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable); for (i = 0; i < variable_len - 2; ) { uint8_t ie_id, ie_len; ie_id = ie[i]; ie_len = ie[i + 1]; if (ie_id == 5) { u16 tim_position; u16 dtim_period; /* This is the TIM Information Element */ /* Check whether the ie_len is in the beacon data range. */ if (variable_len < ie_len + 2 + i) break; /* A valid TIM is at least 4 bytes long. */ if (ie_len < 4) break; tim_found = true; tim_position = sizeof(struct b43_plcp_hdr6); tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable); tim_position += i; dtim_period = ie[i + 3]; b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_TIMBPOS, tim_position); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_DTIMPER, dtim_period); break; } i += ie_len + 2; } if (!tim_found) { /* * If ucode wants to modify TIM do it behind the beacon, this * will happen, for example, when doing mesh networking. */ b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_TIMBPOS, len + sizeof(struct b43_plcp_hdr6)); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_DTIMPER, 0); } b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset); dev_kfree_skb_any(beacon_skb); } static void b43_upload_beacon0(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; if (wl->beacon0_uploaded) return; b43_write_beacon_template(dev, B43_SHM_SH_BT_BASE0, B43_SHM_SH_BTL0); wl->beacon0_uploaded = true; } static void b43_upload_beacon1(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; if (wl->beacon1_uploaded) return; b43_write_beacon_template(dev, B43_SHM_SH_BT_BASE1, B43_SHM_SH_BTL1); wl->beacon1_uploaded = true; } static void handle_irq_beacon(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; u32 cmd, beacon0_valid, beacon1_valid; if (!b43_is_mode(wl, NL80211_IFTYPE_AP) && !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) && !b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) return; /* This is the bottom half of the asynchronous beacon update. */ /* Ignore interrupt in the future. */ dev->irq_mask &= ~B43_IRQ_BEACON; cmd = b43_read32(dev, B43_MMIO_MACCMD); beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID); beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID); /* Schedule interrupt manually, if busy. */ if (beacon0_valid && beacon1_valid) { b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON); dev->irq_mask |= B43_IRQ_BEACON; return; } if (unlikely(wl->beacon_templates_virgin)) { /* We never uploaded a beacon before. * Upload both templates now, but only mark one valid. */ wl->beacon_templates_virgin = false; b43_upload_beacon0(dev); b43_upload_beacon1(dev); cmd = b43_read32(dev, B43_MMIO_MACCMD); cmd |= B43_MACCMD_BEACON0_VALID; b43_write32(dev, B43_MMIO_MACCMD, cmd); } else { if (!beacon0_valid) { b43_upload_beacon0(dev); cmd = b43_read32(dev, B43_MMIO_MACCMD); cmd |= B43_MACCMD_BEACON0_VALID; b43_write32(dev, B43_MMIO_MACCMD, cmd); } else if (!beacon1_valid) { b43_upload_beacon1(dev); cmd = b43_read32(dev, B43_MMIO_MACCMD); cmd |= B43_MACCMD_BEACON1_VALID; b43_write32(dev, B43_MMIO_MACCMD, cmd); } } } static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev) { u32 old_irq_mask = dev->irq_mask; /* update beacon right away or defer to irq */ handle_irq_beacon(dev); if (old_irq_mask != dev->irq_mask) { /* The handler updated the IRQ mask. */ B43_WARN_ON(!dev->irq_mask); if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) { b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask); } else { /* Device interrupts are currently disabled. That means * we just ran the hardirq handler and scheduled the * IRQ thread. The thread will write the IRQ mask when * it finished, so there's nothing to do here. Writing * the mask _here_ would incorrectly re-enable IRQs. */ } } } static void b43_beacon_update_trigger_work(struct work_struct *work) { struct b43_wl *wl = container_of(work, struct b43_wl, beacon_update_trigger); struct b43_wldev *dev; mutex_lock(&wl->mutex); dev = wl->current_dev; if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) { if (b43_bus_host_is_sdio(dev->dev)) { /* wl->mutex is enough. */ b43_do_beacon_update_trigger_work(dev); mmiowb(); } else { spin_lock_irq(&wl->hardirq_lock); b43_do_beacon_update_trigger_work(dev); mmiowb(); spin_unlock_irq(&wl->hardirq_lock); } } mutex_unlock(&wl->mutex); } /* Asynchronously update the packet templates in template RAM. */ static void b43_update_templates(struct b43_wl *wl) { struct sk_buff *beacon, *old_beacon; unsigned long flags; /* This is the top half of the asynchronous beacon update. * The bottom half is the beacon IRQ. * Beacon update must be asynchronous to avoid sending an * invalid beacon. This can happen for example, if the firmware * transmits a beacon while we are updating it. */ /* We could modify the existing beacon and set the aid bit in * the TIM field, but that would probably require resizing and * moving of data within the beacon template. * Simply request a new beacon and let mac80211 do the hard work. */ beacon = ieee80211_beacon_get(wl->hw, wl->vif); if (unlikely(!beacon)) return; spin_lock_irqsave(&wl->beacon_lock, flags); old_beacon = wl->current_beacon; wl->current_beacon = beacon; wl->beacon0_uploaded = false; wl->beacon1_uploaded = false; spin_unlock_irqrestore(&wl->beacon_lock, flags); ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger); if (old_beacon) dev_kfree_skb_any(old_beacon); } static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int) { b43_time_lock(dev); if (dev->dev->core_rev >= 3) { b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16)); b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10)); } else { b43_write16(dev, 0x606, (beacon_int >> 6)); b43_write16(dev, 0x610, beacon_int); } b43_time_unlock(dev); b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int); } static void b43_handle_firmware_panic(struct b43_wldev *dev) { u16 reason; /* Read the register that contains the reason code for the panic. */ reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG); b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason); switch (reason) { default: b43dbg(dev->wl, "The panic reason is unknown.\n"); /* fallthrough */ case B43_FWPANIC_DIE: /* Do not restart the controller or firmware. * The device is nonfunctional from now on. * Restarting would result in this panic to trigger again, * so we avoid that recursion. */ break; case B43_FWPANIC_RESTART: b43_controller_restart(dev, "Microcode panic"); break; } } static void handle_irq_ucode_debug(struct b43_wldev *dev) { unsigned int i, cnt; u16 reason, marker_id, marker_line; __le16 *buf; /* The proprietary firmware doesn't have this IRQ. */ if (!dev->fw.opensource) return; /* Read the register that contains the reason code for this IRQ. */ reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG); switch (reason) { case B43_DEBUGIRQ_PANIC: b43_handle_firmware_panic(dev); break; case B43_DEBUGIRQ_DUMP_SHM: if (!B43_DEBUG) break; /* Only with driver debugging enabled. */ buf = kmalloc(4096, GFP_ATOMIC); if (!buf) { b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n"); goto out; } for (i = 0; i < 4096; i += 2) { u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i); buf[i / 2] = cpu_to_le16(tmp); } b43info(dev->wl, "Shared memory dump:\n"); print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 2, buf, 4096, 1); kfree(buf); break; case B43_DEBUGIRQ_DUMP_REGS: if (!B43_DEBUG) break; /* Only with driver debugging enabled. */ b43info(dev->wl, "Microcode register dump:\n"); for (i = 0, cnt = 0; i < 64; i++) { u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i); if (cnt == 0) printk(KERN_INFO); printk("r%02u: 0x%04X ", i, tmp); cnt++; if (cnt == 6) { printk("\n"); cnt = 0; } } printk("\n"); break; case B43_DEBUGIRQ_MARKER: if (!B43_DEBUG) break; /* Only with driver debugging enabled. */ marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_MARKER_ID_REG); marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_MARKER_LINE_REG); b43info(dev->wl, "The firmware just executed the MARKER(%u) " "at line number %u\n", marker_id, marker_line); break; default: b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n", reason); } out: /* Acknowledge the debug-IRQ, so the firmware can continue. */ b43_shm_write16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK); } static void b43_do_interrupt_thread(struct b43_wldev *dev) { u32 reason; u32 dma_reason[ARRAY_SIZE(dev->dma_reason)]; u32 merged_dma_reason = 0; int i; if (unlikely(b43_status(dev) != B43_STAT_STARTED)) return; reason = dev->irq_reason; for (i = 0; i < ARRAY_SIZE(dma_reason); i++) { dma_reason[i] = dev->dma_reason[i]; merged_dma_reason |= dma_reason[i]; } if (unlikely(reason & B43_IRQ_MAC_TXERR)) b43err(dev->wl, "MAC transmission error\n"); if (unlikely(reason & B43_IRQ_PHY_TXERR)) { b43err(dev->wl, "PHY transmission error\n"); rmb(); if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) { atomic_set(&dev->phy.txerr_cnt, B43_PHY_TX_BADNESS_LIMIT); b43err(dev->wl, "Too many PHY TX errors, " "restarting the controller\n"); b43_controller_restart(dev, "PHY TX errors"); } } if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK))) { b43err(dev->wl, "Fatal DMA error: 0x%08X, 0x%08X, 0x%08X, 0x%08X, 0x%08X, 0x%08X\n", dma_reason[0], dma_reason[1], dma_reason[2], dma_reason[3], dma_reason[4], dma_reason[5]); b43err(dev->wl, "This device does not support DMA " "on your system. It will now be switched to PIO.\n"); /* Fall back to PIO transfers if we get fatal DMA errors! */ dev->use_pio = true; b43_controller_restart(dev, "DMA error"); return; } if (unlikely(reason & B43_IRQ_UCODE_DEBUG)) handle_irq_ucode_debug(dev); if (reason & B43_IRQ_TBTT_INDI) handle_irq_tbtt_indication(dev); if (reason & B43_IRQ_ATIM_END) handle_irq_atim_end(dev); if (reason & B43_IRQ_BEACON) handle_irq_beacon(dev); if (reason & B43_IRQ_PMQ) handle_irq_pmq(dev); if (reason & B43_IRQ_TXFIFO_FLUSH_OK) ;/* TODO */ if (reason & B43_IRQ_NOISESAMPLE_OK) handle_irq_noise(dev); /* Check the DMA reason registers for received data. */ if (dma_reason[0] & B43_DMAIRQ_RDESC_UFLOW) { if (B43_DEBUG) b43warn(dev->wl, "RX descriptor underrun\n"); b43_dma_handle_rx_overflow(dev->dma.rx_ring); } if (dma_reason[0] & B43_DMAIRQ_RX_DONE) { if (b43_using_pio_transfers(dev)) b43_pio_rx(dev->pio.rx_queue); else b43_dma_rx(dev->dma.rx_ring); } B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE); B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE); B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE); B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE); B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE); if (reason & B43_IRQ_TX_OK) handle_irq_transmit_status(dev); /* Re-enable interrupts on the device by restoring the current interrupt mask. */ b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask); #if B43_DEBUG if (b43_debug(dev, B43_DBG_VERBOSESTATS)) { dev->irq_count++; for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) { if (reason & (1 << i)) dev->irq_bit_count[i]++; } } #endif } /* Interrupt thread handler. Handles device interrupts in thread context. */ static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id) { struct b43_wldev *dev = dev_id; mutex_lock(&dev->wl->mutex); b43_do_interrupt_thread(dev); mmiowb(); mutex_unlock(&dev->wl->mutex); return IRQ_HANDLED; } static irqreturn_t b43_do_interrupt(struct b43_wldev *dev) { u32 reason; /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses. * On SDIO, this runs under wl->mutex. */ reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); if (reason == 0xffffffff) /* shared IRQ */ return IRQ_NONE; reason &= dev->irq_mask; if (!reason) return IRQ_NONE; dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON) & 0x0001FC00; dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON) & 0x0000DC00; dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON) & 0x0000DC00; dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON) & 0x0001DC00; dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON) & 0x0000DC00; /* Unused ring dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON) & 0x0000DC00; */ /* ACK the interrupt. */ b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason); b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]); b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]); b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]); b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]); b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]); /* Unused ring b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]); */ /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */ b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0); /* Save the reason bitmasks for the IRQ thread handler. */ dev->irq_reason = reason; return IRQ_WAKE_THREAD; } /* Interrupt handler top-half. This runs with interrupts disabled. */ static irqreturn_t b43_interrupt_handler(int irq, void *dev_id) { struct b43_wldev *dev = dev_id; irqreturn_t ret; if (unlikely(b43_status(dev) < B43_STAT_STARTED)) return IRQ_NONE; spin_lock(&dev->wl->hardirq_lock); ret = b43_do_interrupt(dev); mmiowb(); spin_unlock(&dev->wl->hardirq_lock); return ret; } /* SDIO interrupt handler. This runs in process context. */ static void b43_sdio_interrupt_handler(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; irqreturn_t ret; mutex_lock(&wl->mutex); ret = b43_do_interrupt(dev); if (ret == IRQ_WAKE_THREAD) b43_do_interrupt_thread(dev); mutex_unlock(&wl->mutex); } void b43_do_release_fw(struct b43_firmware_file *fw) { release_firmware(fw->data); fw->data = NULL; fw->filename = NULL; } static void b43_release_firmware(struct b43_wldev *dev) { complete(&dev->fw_load_complete); b43_do_release_fw(&dev->fw.ucode); b43_do_release_fw(&dev->fw.pcm); b43_do_release_fw(&dev->fw.initvals); b43_do_release_fw(&dev->fw.initvals_band); } static void b43_print_fw_helptext(struct b43_wl *wl, bool error) { const char text[] = "You must go to " \ "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \ "and download the correct firmware for this driver version. " \ "Please carefully read all instructions on this website.\n"; if (error) b43err(wl, text); else b43warn(wl, text); } static void b43_fw_cb(const struct firmware *firmware, void *context) { struct b43_request_fw_context *ctx = context; ctx->blob = firmware; complete(&ctx->dev->fw_load_complete); } int b43_do_request_fw(struct b43_request_fw_context *ctx, const char *name, struct b43_firmware_file *fw, bool async) { struct b43_fw_header *hdr; u32 size; int err; if (!name) { /* Don't fetch anything. Free possibly cached firmware. */ /* FIXME: We should probably keep it anyway, to save some headache * on suspend/resume with multiband devices. */ b43_do_release_fw(fw); return 0; } if (fw->filename) { if ((fw->type == ctx->req_type) && (strcmp(fw->filename, name) == 0)) return 0; /* Already have this fw. */ /* Free the cached firmware first. */ /* FIXME: We should probably do this later after we successfully * got the new fw. This could reduce headache with multiband devices. * We could also redesign this to cache the firmware for all possible * bands all the time. */ b43_do_release_fw(fw); } switch (ctx->req_type) { case B43_FWTYPE_PROPRIETARY: snprintf(ctx->fwname, sizeof(ctx->fwname), "b43%s/%s.fw", modparam_fwpostfix, name); break; case B43_FWTYPE_OPENSOURCE: snprintf(ctx->fwname, sizeof(ctx->fwname), "b43-open%s/%s.fw", modparam_fwpostfix, name); break; default: B43_WARN_ON(1); return -ENOSYS; } if (async) { /* do this part asynchronously */ init_completion(&ctx->dev->fw_load_complete); err = request_firmware_nowait(THIS_MODULE, 1, ctx->fwname, ctx->dev->dev->dev, GFP_KERNEL, ctx, b43_fw_cb); if (err < 0) { pr_err("Unable to load firmware\n"); return err; } wait_for_completion(&ctx->dev->fw_load_complete); if (ctx->blob) goto fw_ready; /* On some ARM systems, the async request will fail, but the next sync * request works. For this reason, we fall through here */ } err = request_firmware(&ctx->blob, ctx->fwname, ctx->dev->dev->dev); if (err == -ENOENT) { snprintf(ctx->errors[ctx->req_type], sizeof(ctx->errors[ctx->req_type]), "Firmware file \"%s\" not found\n", ctx->fwname); return err; } else if (err) { snprintf(ctx->errors[ctx->req_type], sizeof(ctx->errors[ctx->req_type]), "Firmware file \"%s\" request failed (err=%d)\n", ctx->fwname, err); return err; } fw_ready: if (ctx->blob->size < sizeof(struct b43_fw_header)) goto err_format; hdr = (struct b43_fw_header *)(ctx->blob->data); switch (hdr->type) { case B43_FW_TYPE_UCODE: case B43_FW_TYPE_PCM: size = be32_to_cpu(hdr->size); if (size != ctx->blob->size - sizeof(struct b43_fw_header)) goto err_format; /* fallthrough */ case B43_FW_TYPE_IV: if (hdr->ver != 1) goto err_format; break; default: goto err_format; } fw->data = ctx->blob; fw->filename = name; fw->type = ctx->req_type; return 0; err_format: snprintf(ctx->errors[ctx->req_type], sizeof(ctx->errors[ctx->req_type]), "Firmware file \"%s\" format error.\n", ctx->fwname); release_firmware(ctx->blob); return -EPROTO; } /* http://bcm-v4.sipsolutions.net/802.11/Init/Firmware */ static int b43_try_request_fw(struct b43_request_fw_context *ctx) { struct b43_wldev *dev = ctx->dev; struct b43_firmware *fw = &ctx->dev->fw; struct b43_phy *phy = &dev->phy; const u8 rev = ctx->dev->dev->core_rev; const char *filename; int err; /* Get microcode */ filename = NULL; switch (rev) { case 42: if (phy->type == B43_PHYTYPE_AC) filename = "ucode42"; break; case 40: if (phy->type == B43_PHYTYPE_AC) filename = "ucode40"; break; case 33: if (phy->type == B43_PHYTYPE_LCN40) filename = "ucode33_lcn40"; break; case 30: if (phy->type == B43_PHYTYPE_N) filename = "ucode30_mimo"; break; case 29: if (phy->type == B43_PHYTYPE_HT) filename = "ucode29_mimo"; break; case 26: if (phy->type == B43_PHYTYPE_HT) filename = "ucode26_mimo"; break; case 28: case 25: if (phy->type == B43_PHYTYPE_N) filename = "ucode25_mimo"; else if (phy->type == B43_PHYTYPE_LCN) filename = "ucode25_lcn"; break; case 24: if (phy->type == B43_PHYTYPE_LCN) filename = "ucode24_lcn"; break; case 23: if (phy->type == B43_PHYTYPE_N) filename = "ucode16_mimo"; break; case 16 ... 19: if (phy->type == B43_PHYTYPE_N) filename = "ucode16_mimo"; else if (phy->type == B43_PHYTYPE_LP) filename = "ucode16_lp"; break; case 15: filename = "ucode15"; break; case 14: filename = "ucode14"; break; case 13: filename = "ucode13"; break; case 11 ... 12: filename = "ucode11"; break; case 5 ... 10: filename = "ucode5"; break; } if (!filename) goto err_no_ucode; err = b43_do_request_fw(ctx, filename, &fw->ucode, true); if (err) goto err_load; /* Get PCM code */ if ((rev >= 5) && (rev <= 10)) filename = "pcm5"; else if (rev >= 11) filename = NULL; else goto err_no_pcm; fw->pcm_request_failed = false; err = b43_do_request_fw(ctx, filename, &fw->pcm, false); if (err == -ENOENT) { /* We did not find a PCM file? Not fatal, but * core rev <= 10 must do without hwcrypto then. */ fw->pcm_request_failed = true; } else if (err) goto err_load; /* Get initvals */ filename = NULL; switch (dev->phy.type) { case B43_PHYTYPE_G: if (rev == 13) filename = "b0g0initvals13"; else if (rev >= 5 && rev <= 10) filename = "b0g0initvals5"; break; case B43_PHYTYPE_N: if (rev == 30) filename = "n16initvals30"; else if (rev == 28 || rev == 25) filename = "n0initvals25"; else if (rev == 24) filename = "n0initvals24"; else if (rev == 23) filename = "n0initvals16"; /* What about n0initvals22? */ else if (rev >= 16 && rev <= 18) filename = "n0initvals16"; else if (rev >= 11 && rev <= 12) filename = "n0initvals11"; break; case B43_PHYTYPE_LP: if (rev >= 16 && rev <= 18) filename = "lp0initvals16"; else if (rev == 15) filename = "lp0initvals15"; else if (rev == 14) filename = "lp0initvals14"; else if (rev == 13) filename = "lp0initvals13"; break; case B43_PHYTYPE_HT: if (rev == 29) filename = "ht0initvals29"; else if (rev == 26) filename = "ht0initvals26"; break; case B43_PHYTYPE_LCN: if (rev == 24) filename = "lcn0initvals24"; break; case B43_PHYTYPE_LCN40: if (rev == 33) filename = "lcn400initvals33"; break; case B43_PHYTYPE_AC: if (rev == 42) filename = "ac1initvals42"; else if (rev == 40) filename = "ac0initvals40"; break; } if (!filename) goto err_no_initvals; err = b43_do_request_fw(ctx, filename, &fw->initvals, false); if (err) goto err_load; /* Get bandswitch initvals */ filename = NULL; switch (dev->phy.type) { case B43_PHYTYPE_G: if (rev == 13) filename = "b0g0bsinitvals13"; else if (rev >= 5 && rev <= 10) filename = "b0g0bsinitvals5"; break; case B43_PHYTYPE_N: if (rev == 30) filename = "n16bsinitvals30"; else if (rev == 28 || rev == 25) filename = "n0bsinitvals25"; else if (rev == 24) filename = "n0bsinitvals24"; else if (rev == 23) filename = "n0bsinitvals16"; /* What about n0bsinitvals22? */ else if (rev >= 16 && rev <= 18) filename = "n0bsinitvals16"; else if (rev >= 11 && rev <= 12) filename = "n0bsinitvals11"; break; case B43_PHYTYPE_LP: if (rev >= 16 && rev <= 18) filename = "lp0bsinitvals16"; else if (rev == 15) filename = "lp0bsinitvals15"; else if (rev == 14) filename = "lp0bsinitvals14"; else if (rev == 13) filename = "lp0bsinitvals13"; break; case B43_PHYTYPE_HT: if (rev == 29) filename = "ht0bsinitvals29"; else if (rev == 26) filename = "ht0bsinitvals26"; break; case B43_PHYTYPE_LCN: if (rev == 24) filename = "lcn0bsinitvals24"; break; case B43_PHYTYPE_LCN40: if (rev == 33) filename = "lcn400bsinitvals33"; break; case B43_PHYTYPE_AC: if (rev == 42) filename = "ac1bsinitvals42"; else if (rev == 40) filename = "ac0bsinitvals40"; break; } if (!filename) goto err_no_initvals; err = b43_do_request_fw(ctx, filename, &fw->initvals_band, false); if (err) goto err_load; fw->opensource = (ctx->req_type == B43_FWTYPE_OPENSOURCE); return 0; err_no_ucode: err = ctx->fatal_failure = -EOPNOTSUPP; b43err(dev->wl, "The driver does not know which firmware (ucode) " "is required for your device (wl-core rev %u)\n", rev); goto error; err_no_pcm: err = ctx->fatal_failure = -EOPNOTSUPP; b43err(dev->wl, "The driver does not know which firmware (PCM) " "is required for your device (wl-core rev %u)\n", rev); goto error; err_no_initvals: err = ctx->fatal_failure = -EOPNOTSUPP; b43err(dev->wl, "The driver does not know which firmware (initvals) " "is required for your device (wl-core rev %u)\n", rev); goto error; err_load: /* We failed to load this firmware image. The error message * already is in ctx->errors. Return and let our caller decide * what to do. */ goto error; error: b43_release_firmware(dev); return err; } static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl); static void b43_one_core_detach(struct b43_bus_dev *dev); static int b43_rng_init(struct b43_wl *wl); static void b43_request_firmware(struct work_struct *work) { struct b43_wl *wl = container_of(work, struct b43_wl, firmware_load); struct b43_wldev *dev = wl->current_dev; struct b43_request_fw_context *ctx; unsigned int i; int err; const char *errmsg; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return; ctx->dev = dev; ctx->req_type = B43_FWTYPE_PROPRIETARY; err = b43_try_request_fw(ctx); if (!err) goto start_ieee80211; /* Successfully loaded it. */ /* Was fw version known? */ if (ctx->fatal_failure) goto out; /* proprietary fw not found, try open source */ ctx->req_type = B43_FWTYPE_OPENSOURCE; err = b43_try_request_fw(ctx); if (!err) goto start_ieee80211; /* Successfully loaded it. */ if(ctx->fatal_failure) goto out; /* Could not find a usable firmware. Print the errors. */ for (i = 0; i < B43_NR_FWTYPES; i++) { errmsg = ctx->errors[i]; if (strlen(errmsg)) b43err(dev->wl, "%s", errmsg); } b43_print_fw_helptext(dev->wl, 1); goto out; start_ieee80211: wl->hw->queues = B43_QOS_QUEUE_NUM; if (!modparam_qos || dev->fw.opensource) wl->hw->queues = 1; err = ieee80211_register_hw(wl->hw); if (err) goto err_one_core_detach; wl->hw_registred = true; b43_leds_register(wl->current_dev); /* Register HW RNG driver */ b43_rng_init(wl); goto out; err_one_core_detach: b43_one_core_detach(dev->dev); out: kfree(ctx); } static int b43_upload_microcode(struct b43_wldev *dev) { struct wiphy *wiphy = dev->wl->hw->wiphy; const size_t hdr_len = sizeof(struct b43_fw_header); const __be32 *data; unsigned int i, len; u16 fwrev, fwpatch, fwdate, fwtime; u32 tmp, macctl; int err = 0; /* Jump the microcode PSM to offset 0 */ macctl = b43_read32(dev, B43_MMIO_MACCTL); B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN); macctl |= B43_MACCTL_PSM_JMP0; b43_write32(dev, B43_MMIO_MACCTL, macctl); /* Zero out all microcode PSM registers and shared memory. */ for (i = 0; i < 64; i++) b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0); for (i = 0; i < 4096; i += 2) b43_shm_write16(dev, B43_SHM_SHARED, i, 0); /* Upload Microcode. */ data = (__be32 *) (dev->fw.ucode.data->data + hdr_len); len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32); b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000); for (i = 0; i < len; i++) { b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i])); udelay(10); } if (dev->fw.pcm.data) { /* Upload PCM data. */ data = (__be32 *) (dev->fw.pcm.data->data + hdr_len); len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32); b43_shm_control_word(dev, B43_SHM_HW, 0x01EA); b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000); /* No need for autoinc bit in SHM_HW */ b43_shm_control_word(dev, B43_SHM_HW, 0x01EB); for (i = 0; i < len; i++) { b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i])); udelay(10); } } b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL); /* Start the microcode PSM */ b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_JMP0, B43_MACCTL_PSM_RUN); /* Wait for the microcode to load and respond */ i = 0; while (1) { tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); if (tmp == B43_IRQ_MAC_SUSPENDED) break; i++; if (i >= 20) { b43err(dev->wl, "Microcode not responding\n"); b43_print_fw_helptext(dev->wl, 1); err = -ENODEV; goto error; } msleep(50); } b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */ /* Get and check the revisions. */ fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV); fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH); fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE); fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME); if (fwrev <= 0x128) { b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from " "binary drivers older than version 4.x is unsupported. " "You must upgrade your firmware files.\n"); b43_print_fw_helptext(dev->wl, 1); err = -EOPNOTSUPP; goto error; } dev->fw.rev = fwrev; dev->fw.patch = fwpatch; if (dev->fw.rev >= 598) dev->fw.hdr_format = B43_FW_HDR_598; else if (dev->fw.rev >= 410) dev->fw.hdr_format = B43_FW_HDR_410; else dev->fw.hdr_format = B43_FW_HDR_351; WARN_ON(dev->fw.opensource != (fwdate == 0xFFFF)); dev->qos_enabled = dev->wl->hw->queues > 1; /* Default to firmware/hardware crypto acceleration. */ dev->hwcrypto_enabled = true; if (dev->fw.opensource) { u16 fwcapa; /* Patchlevel info is encoded in the "time" field. */ dev->fw.patch = fwtime; b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n", dev->fw.rev, dev->fw.patch); fwcapa = b43_fwcapa_read(dev); if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) { b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n"); /* Disable hardware crypto and fall back to software crypto. */ dev->hwcrypto_enabled = false; } /* adding QoS support should use an offline discovery mechanism */ WARN(fwcapa & B43_FWCAPA_QOS, "QoS in OpenFW not supported\n"); } else { b43info(dev->wl, "Loading firmware version %u.%u " "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch, (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF, (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F); if (dev->fw.pcm_request_failed) { b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. " "Hardware accelerated cryptography is disabled.\n"); b43_print_fw_helptext(dev->wl, 0); } } snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u", dev->fw.rev, dev->fw.patch); wiphy->hw_version = dev->dev->core_id; if (dev->fw.hdr_format == B43_FW_HDR_351) { /* We're over the deadline, but we keep support for old fw * until it turns out to be in major conflict with something new. */ b43warn(dev->wl, "You are using an old firmware image. " "Support for old firmware will be removed soon " "(official deadline was July 2008).\n"); b43_print_fw_helptext(dev->wl, 0); } return 0; error: /* Stop the microcode PSM. */ b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN, B43_MACCTL_PSM_JMP0); return err; } static int b43_write_initvals(struct b43_wldev *dev, const struct b43_iv *ivals, size_t count, size_t array_size) { const struct b43_iv *iv; u16 offset; size_t i; bool bit32; BUILD_BUG_ON(sizeof(struct b43_iv) != 6); iv = ivals; for (i = 0; i < count; i++) { if (array_size < sizeof(iv->offset_size)) goto err_format; array_size -= sizeof(iv->offset_size); offset = be16_to_cpu(iv->offset_size); bit32 = !!(offset & B43_IV_32BIT); offset &= B43_IV_OFFSET_MASK; if (offset >= 0x1000) goto err_format; if (bit32) { u32 value; if (array_size < sizeof(iv->data.d32)) goto err_format; array_size -= sizeof(iv->data.d32); value = get_unaligned_be32(&iv->data.d32); b43_write32(dev, offset, value); iv = (const struct b43_iv *)((const uint8_t *)iv + sizeof(__be16) + sizeof(__be32)); } else { u16 value; if (array_size < sizeof(iv->data.d16)) goto err_format; array_size -= sizeof(iv->data.d16); value = be16_to_cpu(iv->data.d16); b43_write16(dev, offset, value); iv = (const struct b43_iv *)((const uint8_t *)iv + sizeof(__be16) + sizeof(__be16)); } } if (array_size) goto err_format; return 0; err_format: b43err(dev->wl, "Initial Values Firmware file-format error.\n"); b43_print_fw_helptext(dev->wl, 1); return -EPROTO; } static int b43_upload_initvals(struct b43_wldev *dev) { const size_t hdr_len = sizeof(struct b43_fw_header); const struct b43_fw_header *hdr; struct b43_firmware *fw = &dev->fw; const struct b43_iv *ivals; size_t count; hdr = (const struct b43_fw_header *)(fw->initvals.data->data); ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len); count = be32_to_cpu(hdr->size); return b43_write_initvals(dev, ivals, count, fw->initvals.data->size - hdr_len); } static int b43_upload_initvals_band(struct b43_wldev *dev) { const size_t hdr_len = sizeof(struct b43_fw_header); const struct b43_fw_header *hdr; struct b43_firmware *fw = &dev->fw; const struct b43_iv *ivals; size_t count; if (!fw->initvals_band.data) return 0; hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data); ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len); count = be32_to_cpu(hdr->size); return b43_write_initvals(dev, ivals, count, fw->initvals_band.data->size - hdr_len); } /* Initialize the GPIOs * http://bcm-specs.sipsolutions.net/GPIO */ #ifdef CONFIG_B43_SSB static struct ssb_device *b43_ssb_gpio_dev(struct b43_wldev *dev) { struct ssb_bus *bus = dev->dev->sdev->bus; #ifdef CONFIG_SSB_DRIVER_PCICORE return (bus->chipco.dev ? bus->chipco.dev : bus->pcicore.dev); #else return bus->chipco.dev; #endif } #endif static int b43_gpio_init(struct b43_wldev *dev) { #ifdef CONFIG_B43_SSB struct ssb_device *gpiodev; #endif u32 mask, set; b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_GPOUTSMSK, 0); b43_maskset16(dev, B43_MMIO_GPIO_MASK, ~0, 0xF); mask = 0x0000001F; set = 0x0000000F; if (dev->dev->chip_id == 0x4301) { mask |= 0x0060; set |= 0x0060; } else if (dev->dev->chip_id == 0x5354) { /* Don't allow overtaking buttons GPIOs */ set &= 0x2; /* 0x2 is LED GPIO on BCM5354 */ } if (0 /* FIXME: conditional unknown */ ) { b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK) | 0x0100); /* BT Coexistance Input */ mask |= 0x0080; set |= 0x0080; /* BT Coexistance Out */ mask |= 0x0100; set |= 0x0100; } if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL) { /* PA is controlled by gpio 9, let ucode handle it */ b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK) | 0x0200); mask |= 0x0200; set |= 0x0200; } switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: bcma_chipco_gpio_control(&dev->dev->bdev->bus->drv_cc, mask, set); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: gpiodev = b43_ssb_gpio_dev(dev); if (gpiodev) ssb_write32(gpiodev, B43_GPIO_CONTROL, (ssb_read32(gpiodev, B43_GPIO_CONTROL) & ~mask) | set); break; #endif } return 0; } /* Turn off all GPIO stuff. Call this on module unload, for example. */ static void b43_gpio_cleanup(struct b43_wldev *dev) { #ifdef CONFIG_B43_SSB struct ssb_device *gpiodev; #endif switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: bcma_chipco_gpio_control(&dev->dev->bdev->bus->drv_cc, ~0, 0); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: gpiodev = b43_ssb_gpio_dev(dev); if (gpiodev) ssb_write32(gpiodev, B43_GPIO_CONTROL, 0); break; #endif } } /* http://bcm-specs.sipsolutions.net/EnableMac */ void b43_mac_enable(struct b43_wldev *dev) { if (b43_debug(dev, B43_DBG_FIRMWARE)) { u16 fwstate; fwstate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODESTAT); if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) && (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) { b43err(dev->wl, "b43_mac_enable(): The firmware " "should be suspended, but current state is %u\n", fwstate); } } dev->mac_suspended--; B43_WARN_ON(dev->mac_suspended < 0); if (dev->mac_suspended == 0) { b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_ENABLED); b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_MAC_SUSPENDED); /* Commit writes */ b43_read32(dev, B43_MMIO_MACCTL); b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); b43_power_saving_ctl_bits(dev, 0); } } /* http://bcm-specs.sipsolutions.net/SuspendMAC */ void b43_mac_suspend(struct b43_wldev *dev) { int i; u32 tmp; might_sleep(); B43_WARN_ON(dev->mac_suspended < 0); if (dev->mac_suspended == 0) { b43_power_saving_ctl_bits(dev, B43_PS_AWAKE); b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_ENABLED, 0); /* force pci to flush the write */ b43_read32(dev, B43_MMIO_MACCTL); for (i = 35; i; i--) { tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); if (tmp & B43_IRQ_MAC_SUSPENDED) goto out; udelay(10); } /* Hm, it seems this will take some time. Use msleep(). */ for (i = 40; i; i--) { tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); if (tmp & B43_IRQ_MAC_SUSPENDED) goto out; msleep(1); } b43err(dev->wl, "MAC suspend failed\n"); } out: dev->mac_suspended++; } /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */ void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on) { u32 tmp; switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL); if (on) tmp |= B43_BCMA_IOCTL_MACPHYCLKEN; else tmp &= ~B43_BCMA_IOCTL_MACPHYCLKEN; bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW); if (on) tmp |= B43_TMSLOW_MACPHYCLKEN; else tmp &= ~B43_TMSLOW_MACPHYCLKEN; ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp); break; #endif } } /* brcms_b_switch_macfreq */ void b43_mac_switch_freq(struct b43_wldev *dev, u8 spurmode) { u16 chip_id = dev->dev->chip_id; if (chip_id == BCMA_CHIP_ID_BCM4331) { switch (spurmode) { case 2: /* 168 Mhz: 2^26/168 = 0x61862 */ b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x1862); b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6); break; case 1: /* 164 Mhz: 2^26/164 = 0x63e70 */ b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x3e70); b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6); break; default: /* 160 Mhz: 2^26/160 = 0x66666 */ b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x6666); b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6); break; } } else if (chip_id == BCMA_CHIP_ID_BCM43131 || chip_id == BCMA_CHIP_ID_BCM43217 || chip_id == BCMA_CHIP_ID_BCM43222 || chip_id == BCMA_CHIP_ID_BCM43224 || chip_id == BCMA_CHIP_ID_BCM43225 || chip_id == BCMA_CHIP_ID_BCM43227 || chip_id == BCMA_CHIP_ID_BCM43228) { switch (spurmode) { case 2: /* 126 Mhz */ b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x2082); b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8); break; case 1: /* 123 Mhz */ b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x5341); b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8); break; default: /* 120 Mhz */ b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x8889); b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8); break; } } else if (dev->phy.type == B43_PHYTYPE_LCN) { switch (spurmode) { case 1: /* 82 Mhz */ b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x7CE0); b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0xC); break; default: /* 80 Mhz */ b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0xCCCD); b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0xC); break; } } } static void b43_adjust_opmode(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; u32 ctl; u16 cfp_pretbtt; ctl = b43_read32(dev, B43_MMIO_MACCTL); /* Reset status to STA infrastructure mode. */ ctl &= ~B43_MACCTL_AP; ctl &= ~B43_MACCTL_KEEP_CTL; ctl &= ~B43_MACCTL_KEEP_BADPLCP; ctl &= ~B43_MACCTL_KEEP_BAD; ctl &= ~B43_MACCTL_PROMISC; ctl &= ~B43_MACCTL_BEACPROMISC; ctl |= B43_MACCTL_INFRA; if (b43_is_mode(wl, NL80211_IFTYPE_AP) || b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT)) ctl |= B43_MACCTL_AP; else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) ctl &= ~B43_MACCTL_INFRA; if (wl->filter_flags & FIF_CONTROL) ctl |= B43_MACCTL_KEEP_CTL; if (wl->filter_flags & FIF_FCSFAIL) ctl |= B43_MACCTL_KEEP_BAD; if (wl->filter_flags & FIF_PLCPFAIL) ctl |= B43_MACCTL_KEEP_BADPLCP; if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC) ctl |= B43_MACCTL_BEACPROMISC; /* Workaround: On old hardware the HW-MAC-address-filter * doesn't work properly, so always run promisc in filter * it in software. */ if (dev->dev->core_rev <= 4) ctl |= B43_MACCTL_PROMISC; b43_write32(dev, B43_MMIO_MACCTL, ctl); cfp_pretbtt = 2; if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) { if (dev->dev->chip_id == 0x4306 && dev->dev->chip_rev == 3) cfp_pretbtt = 100; else cfp_pretbtt = 50; } b43_write16(dev, 0x612, cfp_pretbtt); /* FIXME: We don't currently implement the PMQ mechanism, * so always disable it. If we want to implement PMQ, * we need to enable it here (clear DISCPMQ) in AP mode. */ if (0 /* ctl & B43_MACCTL_AP */) b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_DISCPMQ, 0); else b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_DISCPMQ); } static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm) { u16 offset; if (is_ofdm) { offset = 0x480; offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2; } else { offset = 0x4C0; offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2; } b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20, b43_shm_read16(dev, B43_SHM_SHARED, offset)); } static void b43_rate_memory_init(struct b43_wldev *dev) { switch (dev->phy.type) { case B43_PHYTYPE_G: case B43_PHYTYPE_N: case B43_PHYTYPE_LP: case B43_PHYTYPE_HT: case B43_PHYTYPE_LCN: b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1); b43_rate_memory_write(dev, B43_OFDM_RATE_9MB, 1); b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1); b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1); b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1); b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1); b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1); b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1); /* fallthrough */ case B43_PHYTYPE_B: b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0); b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0); b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0); b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0); break; default: B43_WARN_ON(1); } } /* Set the default values for the PHY TX Control Words. */ static void b43_set_phytxctl_defaults(struct b43_wldev *dev) { u16 ctl = 0; ctl |= B43_TXH_PHY_ENC_CCK; ctl |= B43_TXH_PHY_ANT01AUTO; ctl |= B43_TXH_PHY_TXPWR; b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl); } /* Set the TX-Antenna for management frames sent by firmware. */ static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna) { u16 ant; u16 tmp; ant = b43_antenna_to_phyctl(antenna); /* For ACK/CTS */ tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL); tmp = (tmp & ~B43_TXH_PHY_ANT) | ant; b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp); /* For Probe Resposes */ tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL); tmp = (tmp & ~B43_TXH_PHY_ANT) | ant; b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp); } /* This is the opposite of b43_chip_init() */ static void b43_chip_exit(struct b43_wldev *dev) { b43_phy_exit(dev); b43_gpio_cleanup(dev); /* firmware is released later */ } /* Initialize the chip * http://bcm-specs.sipsolutions.net/ChipInit */ static int b43_chip_init(struct b43_wldev *dev) { struct b43_phy *phy = &dev->phy; int err; u32 macctl; u16 value16; /* Initialize the MAC control */ macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED; if (dev->phy.gmode) macctl |= B43_MACCTL_GMODE; macctl |= B43_MACCTL_INFRA; b43_write32(dev, B43_MMIO_MACCTL, macctl); err = b43_upload_microcode(dev); if (err) goto out; /* firmware is released later */ err = b43_gpio_init(dev); if (err) goto out; /* firmware is released later */ err = b43_upload_initvals(dev); if (err) goto err_gpio_clean; err = b43_upload_initvals_band(dev); if (err) goto err_gpio_clean; /* Turn the Analog on and initialize the PHY. */ phy->ops->switch_analog(dev, 1); err = b43_phy_init(dev); if (err) goto err_gpio_clean; /* Disable Interference Mitigation. */ if (phy->ops->interf_mitigation) phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE); /* Select the antennae */ if (phy->ops->set_rx_antenna) phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT); b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT); if (phy->type == B43_PHYTYPE_B) { value16 = b43_read16(dev, 0x005E); value16 |= 0x0004; b43_write16(dev, 0x005E, value16); } b43_write32(dev, 0x0100, 0x01000000); if (dev->dev->core_rev < 5) b43_write32(dev, 0x010C, 0x01000000); b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_INFRA, 0); b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_INFRA); /* Probe Response Timeout value */ /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */ b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 0); /* Initially set the wireless operation mode. */ b43_adjust_opmode(dev); if (dev->dev->core_rev < 3) { b43_write16(dev, 0x060E, 0x0000); b43_write16(dev, 0x0610, 0x8000); b43_write16(dev, 0x0604, 0x0000); b43_write16(dev, 0x0606, 0x0200); } else { b43_write32(dev, 0x0188, 0x80000000); b43_write32(dev, 0x018C, 0x02000000); } b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000); b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001FC00); b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00); b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00); b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00); b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00); b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00); b43_mac_phy_clock_set(dev, true); switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: /* FIXME: 0xE74 is quite common, but should be read from CC */ b43_write16(dev, B43_MMIO_POWERUP_DELAY, 0xE74); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: b43_write16(dev, B43_MMIO_POWERUP_DELAY, dev->dev->sdev->bus->chipco.fast_pwrup_delay); break; #endif } err = 0; b43dbg(dev->wl, "Chip initialized\n"); out: return err; err_gpio_clean: b43_gpio_cleanup(dev); return err; } static void b43_periodic_every60sec(struct b43_wldev *dev) { const struct b43_phy_operations *ops = dev->phy.ops; if (ops->pwork_60sec) ops->pwork_60sec(dev); /* Force check the TX power emission now. */ b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME); } static void b43_periodic_every30sec(struct b43_wldev *dev) { /* Update device statistics. */ b43_calculate_link_quality(dev); } static void b43_periodic_every15sec(struct b43_wldev *dev) { struct b43_phy *phy = &dev->phy; u16 wdr; if (dev->fw.opensource) { /* Check if the firmware is still alive. * It will reset the watchdog counter to 0 in its idle loop. */ wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG); if (unlikely(wdr)) { b43err(dev->wl, "Firmware watchdog: The firmware died!\n"); b43_controller_restart(dev, "Firmware watchdog"); return; } else { b43_shm_write16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG, 1); } } if (phy->ops->pwork_15sec) phy->ops->pwork_15sec(dev); atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT); wmb(); #if B43_DEBUG if (b43_debug(dev, B43_DBG_VERBOSESTATS)) { unsigned int i; b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n", dev->irq_count / 15, dev->tx_count / 15, dev->rx_count / 15); dev->irq_count = 0; dev->tx_count = 0; dev->rx_count = 0; for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) { if (dev->irq_bit_count[i]) { b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n", dev->irq_bit_count[i] / 15, i, (1 << i)); dev->irq_bit_count[i] = 0; } } } #endif } static void do_periodic_work(struct b43_wldev *dev) { unsigned int state; state = dev->periodic_state; if (state % 4 == 0) b43_periodic_every60sec(dev); if (state % 2 == 0) b43_periodic_every30sec(dev); b43_periodic_every15sec(dev); } /* Periodic work locking policy: * The whole periodic work handler is protected by * wl->mutex. If another lock is needed somewhere in the * pwork callchain, it's acquired in-place, where it's needed. */ static void b43_periodic_work_handler(struct work_struct *work) { struct b43_wldev *dev = container_of(work, struct b43_wldev, periodic_work.work); struct b43_wl *wl = dev->wl; unsigned long delay; mutex_lock(&wl->mutex); if (unlikely(b43_status(dev) != B43_STAT_STARTED)) goto out; if (b43_debug(dev, B43_DBG_PWORK_STOP)) goto out_requeue; do_periodic_work(dev); dev->periodic_state++; out_requeue: if (b43_debug(dev, B43_DBG_PWORK_FAST)) delay = msecs_to_jiffies(50); else delay = round_jiffies_relative(HZ * 15); ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay); out: mutex_unlock(&wl->mutex); } static void b43_periodic_tasks_setup(struct b43_wldev *dev) { struct delayed_work *work = &dev->periodic_work; dev->periodic_state = 0; INIT_DELAYED_WORK(work, b43_periodic_work_handler); ieee80211_queue_delayed_work(dev->wl->hw, work, 0); } /* Check if communication with the device works correctly. */ static int b43_validate_chipaccess(struct b43_wldev *dev) { u32 v, backup0, backup4; backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0); backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4); /* Check for read/write and endianness problems. */ b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55); if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55) goto error; b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA); if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA) goto error; /* Check if unaligned 32bit SHM_SHARED access works properly. * However, don't bail out on failure, because it's noncritical. */ b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122); b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344); b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566); b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788); if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344) b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n"); b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD); if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 || b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD || b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB || b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788) b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n"); b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0); b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4); if ((dev->dev->core_rev >= 3) && (dev->dev->core_rev <= 10)) { /* The 32bit register shadows the two 16bit registers * with update sideeffects. Validate this. */ b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA); b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB); if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB) goto error; if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC) goto error; } b43_write32(dev, B43_MMIO_TSF_CFP_START, 0); v = b43_read32(dev, B43_MMIO_MACCTL); v |= B43_MACCTL_GMODE; if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED)) goto error; return 0; error: b43err(dev->wl, "Failed to validate the chipaccess\n"); return -ENODEV; } static void b43_security_init(struct b43_wldev *dev) { dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP); /* KTP is a word address, but we address SHM bytewise. * So multiply by two. */ dev->ktp *= 2; /* Number of RCMTA address slots */ b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS); /* Clear the key memory. */ b43_clear_keys(dev); } #ifdef CONFIG_B43_HWRNG static int b43_rng_read(struct hwrng *rng, u32 *data) { struct b43_wl *wl = (struct b43_wl *)rng->priv; struct b43_wldev *dev; int count = -ENODEV; mutex_lock(&wl->mutex); dev = wl->current_dev; if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) { *data = b43_read16(dev, B43_MMIO_RNG); count = sizeof(u16); } mutex_unlock(&wl->mutex); return count; } #endif /* CONFIG_B43_HWRNG */ static void b43_rng_exit(struct b43_wl *wl) { #ifdef CONFIG_B43_HWRNG if (wl->rng_initialized) hwrng_unregister(&wl->rng); #endif /* CONFIG_B43_HWRNG */ } static int b43_rng_init(struct b43_wl *wl) { int err = 0; #ifdef CONFIG_B43_HWRNG snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name), "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy)); wl->rng.name = wl->rng_name; wl->rng.data_read = b43_rng_read; wl->rng.priv = (unsigned long)wl; wl->rng_initialized = true; err = hwrng_register(&wl->rng); if (err) { wl->rng_initialized = false; b43err(wl, "Failed to register the random " "number generator (%d)\n", err); } #endif /* CONFIG_B43_HWRNG */ return err; } static void b43_tx_work(struct work_struct *work) { struct b43_wl *wl = container_of(work, struct b43_wl, tx_work); struct b43_wldev *dev; struct sk_buff *skb; int queue_num; int err = 0; mutex_lock(&wl->mutex); dev = wl->current_dev; if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) { mutex_unlock(&wl->mutex); return; } for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) { while (skb_queue_len(&wl->tx_queue[queue_num])) { skb = skb_dequeue(&wl->tx_queue[queue_num]); if (b43_using_pio_transfers(dev)) err = b43_pio_tx(dev, skb); else err = b43_dma_tx(dev, skb); if (err == -ENOSPC) { wl->tx_queue_stopped[queue_num] = 1; ieee80211_stop_queue(wl->hw, queue_num); skb_queue_head(&wl->tx_queue[queue_num], skb); break; } if (unlikely(err)) ieee80211_free_txskb(wl->hw, skb); err = 0; } if (!err) wl->tx_queue_stopped[queue_num] = 0; } #if B43_DEBUG dev->tx_count++; #endif mutex_unlock(&wl->mutex); } static void b43_op_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb) { struct b43_wl *wl = hw_to_b43_wl(hw); if (unlikely(skb->len < 2 + 2 + 6)) { /* Too short, this can't be a valid frame. */ ieee80211_free_txskb(hw, skb); return; } B43_WARN_ON(skb_shinfo(skb)->nr_frags); skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb); if (!wl->tx_queue_stopped[skb->queue_mapping]) { ieee80211_queue_work(wl->hw, &wl->tx_work); } else { ieee80211_stop_queue(wl->hw, skb->queue_mapping); } } static void b43_qos_params_upload(struct b43_wldev *dev, const struct ieee80211_tx_queue_params *p, u16 shm_offset) { u16 params[B43_NR_QOSPARAMS]; int bslots, tmp; unsigned int i; if (!dev->qos_enabled) return; bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min; memset(¶ms, 0, sizeof(params)); params[B43_QOSPARAM_TXOP] = p->txop * 32; params[B43_QOSPARAM_CWMIN] = p->cw_min; params[B43_QOSPARAM_CWMAX] = p->cw_max; params[B43_QOSPARAM_CWCUR] = p->cw_min; params[B43_QOSPARAM_AIFS] = p->aifs; params[B43_QOSPARAM_BSLOTS] = bslots; params[B43_QOSPARAM_REGGAP] = bslots + p->aifs; for (i = 0; i < ARRAY_SIZE(params); i++) { if (i == B43_QOSPARAM_STATUS) { tmp = b43_shm_read16(dev, B43_SHM_SHARED, shm_offset + (i * 2)); /* Mark the parameters as updated. */ tmp |= 0x100; b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + (i * 2), tmp); } else { b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + (i * 2), params[i]); } } } /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */ static const u16 b43_qos_shm_offsets[] = { /* [mac80211-queue-nr] = SHM_OFFSET, */ [0] = B43_QOS_VOICE, [1] = B43_QOS_VIDEO, [2] = B43_QOS_BESTEFFORT, [3] = B43_QOS_BACKGROUND, }; /* Update all QOS parameters in hardware. */ static void b43_qos_upload_all(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; struct b43_qos_params *params; unsigned int i; if (!dev->qos_enabled) return; BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) != ARRAY_SIZE(wl->qos_params)); b43_mac_suspend(dev); for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) { params = &(wl->qos_params[i]); b43_qos_params_upload(dev, &(params->p), b43_qos_shm_offsets[i]); } b43_mac_enable(dev); } static void b43_qos_clear(struct b43_wl *wl) { struct b43_qos_params *params; unsigned int i; /* Initialize QoS parameters to sane defaults. */ BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) != ARRAY_SIZE(wl->qos_params)); for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) { params = &(wl->qos_params[i]); switch (b43_qos_shm_offsets[i]) { case B43_QOS_VOICE: params->p.txop = 0; params->p.aifs = 2; params->p.cw_min = 0x0001; params->p.cw_max = 0x0001; break; case B43_QOS_VIDEO: params->p.txop = 0; params->p.aifs = 2; params->p.cw_min = 0x0001; params->p.cw_max = 0x0001; break; case B43_QOS_BESTEFFORT: params->p.txop = 0; params->p.aifs = 3; params->p.cw_min = 0x0001; params->p.cw_max = 0x03FF; break; case B43_QOS_BACKGROUND: params->p.txop = 0; params->p.aifs = 7; params->p.cw_min = 0x0001; params->p.cw_max = 0x03FF; break; default: B43_WARN_ON(1); } } } /* Initialize the core's QOS capabilities */ static void b43_qos_init(struct b43_wldev *dev) { if (!dev->qos_enabled) { /* Disable QOS support. */ b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF); b43_write16(dev, B43_MMIO_IFSCTL, b43_read16(dev, B43_MMIO_IFSCTL) & ~B43_MMIO_IFSCTL_USE_EDCF); b43dbg(dev->wl, "QoS disabled\n"); return; } /* Upload the current QOS parameters. */ b43_qos_upload_all(dev); /* Enable QOS support. */ b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF); b43_write16(dev, B43_MMIO_IFSCTL, b43_read16(dev, B43_MMIO_IFSCTL) | B43_MMIO_IFSCTL_USE_EDCF); b43dbg(dev->wl, "QoS enabled\n"); } static int b43_op_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 _queue, const struct ieee80211_tx_queue_params *params) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; unsigned int queue = (unsigned int)_queue; int err = -ENODEV; if (queue >= ARRAY_SIZE(wl->qos_params)) { /* Queue not available or don't support setting * params on this queue. Return success to not * confuse mac80211. */ return 0; } BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) != ARRAY_SIZE(wl->qos_params)); mutex_lock(&wl->mutex); dev = wl->current_dev; if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) goto out_unlock; memcpy(&(wl->qos_params[queue].p), params, sizeof(*params)); b43_mac_suspend(dev); b43_qos_params_upload(dev, &(wl->qos_params[queue].p), b43_qos_shm_offsets[queue]); b43_mac_enable(dev); err = 0; out_unlock: mutex_unlock(&wl->mutex); return err; } static int b43_op_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats) { struct b43_wl *wl = hw_to_b43_wl(hw); mutex_lock(&wl->mutex); memcpy(stats, &wl->ieee_stats, sizeof(*stats)); mutex_unlock(&wl->mutex); return 0; } static u64 b43_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; u64 tsf; mutex_lock(&wl->mutex); dev = wl->current_dev; if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) b43_tsf_read(dev, &tsf); else tsf = 0; mutex_unlock(&wl->mutex); return tsf; } static void b43_op_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 tsf) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; mutex_lock(&wl->mutex); dev = wl->current_dev; if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) b43_tsf_write(dev, tsf); mutex_unlock(&wl->mutex); } static const char *band_to_string(enum nl80211_band band) { switch (band) { case NL80211_BAND_5GHZ: return "5"; case NL80211_BAND_2GHZ: return "2.4"; default: break; } B43_WARN_ON(1); return ""; } /* Expects wl->mutex locked */ static int b43_switch_band(struct b43_wldev *dev, struct ieee80211_channel *chan) { struct b43_phy *phy = &dev->phy; bool gmode; u32 tmp; switch (chan->band) { case NL80211_BAND_5GHZ: gmode = false; break; case NL80211_BAND_2GHZ: gmode = true; break; default: B43_WARN_ON(1); return -EINVAL; } if (!((gmode && phy->supports_2ghz) || (!gmode && phy->supports_5ghz))) { b43err(dev->wl, "This device doesn't support %s-GHz band\n", band_to_string(chan->band)); return -ENODEV; } if (!!phy->gmode == !!gmode) { /* This device is already running. */ return 0; } b43dbg(dev->wl, "Switching to %s GHz band\n", band_to_string(chan->band)); /* Some new devices don't need disabling radio for band switching */ if (!(phy->type == B43_PHYTYPE_N && phy->rev >= 3)) b43_software_rfkill(dev, true); phy->gmode = gmode; b43_phy_put_into_reset(dev); switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL); if (gmode) tmp |= B43_BCMA_IOCTL_GMODE; else tmp &= ~B43_BCMA_IOCTL_GMODE; bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW); if (gmode) tmp |= B43_TMSLOW_GMODE; else tmp &= ~B43_TMSLOW_GMODE; ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp); break; #endif } b43_phy_take_out_of_reset(dev); b43_upload_initvals_band(dev); b43_phy_init(dev); return 0; } static void b43_set_beacon_listen_interval(struct b43_wldev *dev, u16 interval) { interval = min_t(u16, interval, (u16)0xFF); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BCN_LI, interval); } /* Write the short and long frame retry limit values. */ static void b43_set_retry_limits(struct b43_wldev *dev, unsigned int short_retry, unsigned int long_retry) { /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing * the chip-internal counter. */ short_retry = min(short_retry, (unsigned int)0xF); long_retry = min(long_retry, (unsigned int)0xF); b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT, short_retry); b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT, long_retry); } static int b43_op_config(struct ieee80211_hw *hw, u32 changed) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; struct b43_phy *phy = &dev->phy; struct ieee80211_conf *conf = &hw->conf; int antenna; int err = 0; mutex_lock(&wl->mutex); b43_mac_suspend(dev); if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) b43_set_beacon_listen_interval(dev, conf->listen_interval); if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { phy->chandef = &conf->chandef; phy->channel = conf->chandef.chan->hw_value; /* Switch the band (if necessary). */ err = b43_switch_band(dev, conf->chandef.chan); if (err) goto out_mac_enable; /* Switch to the requested channel. * The firmware takes care of races with the TX handler. */ b43_switch_channel(dev, phy->channel); } if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) b43_set_retry_limits(dev, conf->short_frame_max_tx_count, conf->long_frame_max_tx_count); changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS; if (!changed) goto out_mac_enable; dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR); /* Adjust the desired TX power level. */ if (conf->power_level != 0) { if (conf->power_level != phy->desired_txpower) { phy->desired_txpower = conf->power_level; b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME | B43_TXPWR_IGNORE_TSSI); } } /* Antennas for RX and management frame TX. */ antenna = B43_ANTENNA_DEFAULT; b43_mgmtframe_txantenna(dev, antenna); antenna = B43_ANTENNA_DEFAULT; if (phy->ops->set_rx_antenna) phy->ops->set_rx_antenna(dev, antenna); if (wl->radio_enabled != phy->radio_on) { if (wl->radio_enabled) { 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 " "still turns the radio physically off. " "Press the button to turn it on.\n"); } } else { b43_software_rfkill(dev, true); b43info(dev->wl, "Radio turned off by software\n"); } } out_mac_enable: b43_mac_enable(dev); mutex_unlock(&wl->mutex); return err; } static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates) { struct ieee80211_supported_band *sband = dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)]; struct ieee80211_rate *rate; int i; u16 basic, direct, offset, basic_offset, rateptr; for (i = 0; i < sband->n_bitrates; i++) { rate = &sband->bitrates[i]; if (b43_is_cck_rate(rate->hw_value)) { direct = B43_SHM_SH_CCKDIRECT; basic = B43_SHM_SH_CCKBASIC; offset = b43_plcp_get_ratecode_cck(rate->hw_value); offset &= 0xF; } else { direct = B43_SHM_SH_OFDMDIRECT; basic = B43_SHM_SH_OFDMBASIC; offset = b43_plcp_get_ratecode_ofdm(rate->hw_value); offset &= 0xF; } rate = ieee80211_get_response_rate(sband, brates, rate->bitrate); if (b43_is_cck_rate(rate->hw_value)) { basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value); basic_offset &= 0xF; } else { basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value); basic_offset &= 0xF; } /* * Get the pointer that we need to point to * from the direct map */ rateptr = b43_shm_read16(dev, B43_SHM_SHARED, direct + 2 * basic_offset); /* and write it to the basic map */ b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset, rateptr); } } static void b43_op_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf, u32 changed) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; mutex_lock(&wl->mutex); dev = wl->current_dev; if (!dev || b43_status(dev) < B43_STAT_STARTED) goto out_unlock_mutex; B43_WARN_ON(wl->vif != vif); if (changed & BSS_CHANGED_BSSID) { if (conf->bssid) memcpy(wl->bssid, conf->bssid, ETH_ALEN); else eth_zero_addr(wl->bssid); } if (b43_status(dev) >= B43_STAT_INITIALIZED) { if (changed & BSS_CHANGED_BEACON && (b43_is_mode(wl, NL80211_IFTYPE_AP) || b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) || b43_is_mode(wl, NL80211_IFTYPE_ADHOC))) b43_update_templates(wl); if (changed & BSS_CHANGED_BSSID) b43_write_mac_bssid_templates(dev); } b43_mac_suspend(dev); /* Update templates for AP/mesh mode. */ if (changed & BSS_CHANGED_BEACON_INT && (b43_is_mode(wl, NL80211_IFTYPE_AP) || b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) || b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) && conf->beacon_int) b43_set_beacon_int(dev, conf->beacon_int); if (changed & BSS_CHANGED_BASIC_RATES) b43_update_basic_rates(dev, conf->basic_rates); if (changed & BSS_CHANGED_ERP_SLOT) { if (conf->use_short_slot) b43_short_slot_timing_enable(dev); else b43_short_slot_timing_disable(dev); } b43_mac_enable(dev); out_unlock_mutex: mutex_unlock(&wl->mutex); } static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; u8 algorithm; u8 index; int err; static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; if (modparam_nohwcrypt) return -ENOSPC; /* User disabled HW-crypto */ if ((vif->type == NL80211_IFTYPE_ADHOC || vif->type == NL80211_IFTYPE_MESH_POINT) && (key->cipher == WLAN_CIPHER_SUITE_TKIP || key->cipher == WLAN_CIPHER_SUITE_CCMP) && !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { /* * For now, disable hw crypto for the RSN IBSS group keys. This * could be optimized in the future, but until that gets * implemented, use of software crypto for group addressed * frames is a acceptable to allow RSN IBSS to be used. */ return -EOPNOTSUPP; } mutex_lock(&wl->mutex); dev = wl->current_dev; err = -ENODEV; if (!dev || b43_status(dev) < B43_STAT_INITIALIZED) goto out_unlock; if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) { /* We don't have firmware for the crypto engine. * Must use software-crypto. */ err = -EOPNOTSUPP; goto out_unlock; } err = -EINVAL; switch (key->cipher) { case WLAN_CIPHER_SUITE_WEP40: algorithm = B43_SEC_ALGO_WEP40; break; case WLAN_CIPHER_SUITE_WEP104: algorithm = B43_SEC_ALGO_WEP104; break; case WLAN_CIPHER_SUITE_TKIP: algorithm = B43_SEC_ALGO_TKIP; break; case WLAN_CIPHER_SUITE_CCMP: algorithm = B43_SEC_ALGO_AES; break; default: B43_WARN_ON(1); goto out_unlock; } index = (u8) (key->keyidx); if (index > 3) goto out_unlock; switch (cmd) { case SET_KEY: if (algorithm == B43_SEC_ALGO_TKIP && (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) || !modparam_hwtkip)) { /* We support only pairwise key */ err = -EOPNOTSUPP; goto out_unlock; } if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { if (WARN_ON(!sta)) { err = -EOPNOTSUPP; goto out_unlock; } /* Pairwise key with an assigned MAC address. */ err = b43_key_write(dev, -1, algorithm, key->key, key->keylen, sta->addr, key); } else { /* Group key */ err = b43_key_write(dev, index, algorithm, key->key, key->keylen, NULL, key); } if (err) goto out_unlock; if (algorithm == B43_SEC_ALGO_WEP40 || algorithm == B43_SEC_ALGO_WEP104) { b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS); } else { b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_USEDEFKEYS); } key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; if (algorithm == B43_SEC_ALGO_TKIP) key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; break; case DISABLE_KEY: { err = b43_key_clear(dev, key->hw_key_idx); if (err) goto out_unlock; break; } default: B43_WARN_ON(1); } out_unlock: if (!err) { b43dbg(wl, "%s hardware based encryption for keyidx: %d, " "mac: %pM\n", cmd == SET_KEY ? "Using" : "Disabling", key->keyidx, sta ? sta->addr : bcast_addr); b43_dump_keymemory(dev); } mutex_unlock(&wl->mutex); return err; } static void b43_op_configure_filter(struct ieee80211_hw *hw, unsigned int changed, unsigned int *fflags, u64 multicast) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; mutex_lock(&wl->mutex); dev = wl->current_dev; if (!dev) { *fflags = 0; goto out_unlock; } *fflags &= FIF_ALLMULTI | FIF_FCSFAIL | FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC; changed &= FIF_ALLMULTI | FIF_FCSFAIL | FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC; wl->filter_flags = *fflags; if (changed && b43_status(dev) >= B43_STAT_INITIALIZED) b43_adjust_opmode(dev); out_unlock: mutex_unlock(&wl->mutex); } /* Locking: wl->mutex * Returns the current dev. This might be different from the passed in dev, * because the core might be gone away while we unlocked the mutex. */ static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev) { struct b43_wl *wl; struct b43_wldev *orig_dev; u32 mask; int queue_num; if (!dev) return NULL; wl = dev->wl; redo: if (!dev || b43_status(dev) < B43_STAT_STARTED) return dev; /* Cancel work. Unlock to avoid deadlocks. */ mutex_unlock(&wl->mutex); cancel_delayed_work_sync(&dev->periodic_work); cancel_work_sync(&wl->tx_work); b43_leds_stop(dev); mutex_lock(&wl->mutex); dev = wl->current_dev; if (!dev || b43_status(dev) < B43_STAT_STARTED) { /* Whoops, aliens ate up the device while we were unlocked. */ return dev; } /* Disable interrupts on the device. */ b43_set_status(dev, B43_STAT_INITIALIZED); if (b43_bus_host_is_sdio(dev->dev)) { /* wl->mutex is locked. That is enough. */ b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0); b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */ } else { spin_lock_irq(&wl->hardirq_lock); b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0); b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */ spin_unlock_irq(&wl->hardirq_lock); } /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */ orig_dev = dev; mutex_unlock(&wl->mutex); if (b43_bus_host_is_sdio(dev->dev)) b43_sdio_free_irq(dev); else free_irq(dev->dev->irq, dev); mutex_lock(&wl->mutex); dev = wl->current_dev; if (!dev) return dev; if (dev != orig_dev) { if (b43_status(dev) >= B43_STAT_STARTED) goto redo; return dev; } mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); B43_WARN_ON(mask != 0xFFFFFFFF && mask); /* Drain all TX queues. */ for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) { while (skb_queue_len(&wl->tx_queue[queue_num])) { struct sk_buff *skb; skb = skb_dequeue(&wl->tx_queue[queue_num]); ieee80211_free_txskb(wl->hw, skb); } } b43_mac_suspend(dev); b43_leds_exit(dev); b43dbg(wl, "Wireless interface stopped\n"); return dev; } /* Locking: wl->mutex */ static int b43_wireless_core_start(struct b43_wldev *dev) { int err; B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED); drain_txstatus_queue(dev); if (b43_bus_host_is_sdio(dev->dev)) { err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler); if (err) { b43err(dev->wl, "Cannot request SDIO IRQ\n"); goto out; } } else { err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler, b43_interrupt_thread_handler, IRQF_SHARED, KBUILD_MODNAME, dev); if (err) { b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq); goto out; } } /* We are ready to run. */ ieee80211_wake_queues(dev->wl->hw); b43_set_status(dev, B43_STAT_STARTED); /* Start data flow (TX/RX). */ b43_mac_enable(dev); b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask); /* Start maintenance work */ b43_periodic_tasks_setup(dev); b43_leds_init(dev); b43dbg(dev->wl, "Wireless interface started\n"); out: return err; } static char *b43_phy_name(struct b43_wldev *dev, u8 phy_type) { switch (phy_type) { case B43_PHYTYPE_A: return "A"; case B43_PHYTYPE_B: return "B"; case B43_PHYTYPE_G: return "G"; case B43_PHYTYPE_N: return "N"; case B43_PHYTYPE_LP: return "LP"; case B43_PHYTYPE_SSLPN: return "SSLPN"; case B43_PHYTYPE_HT: return "HT"; case B43_PHYTYPE_LCN: return "LCN"; case B43_PHYTYPE_LCNXN: return "LCNXN"; case B43_PHYTYPE_LCN40: return "LCN40"; case B43_PHYTYPE_AC: return "AC"; } return "UNKNOWN"; } /* Get PHY and RADIO versioning numbers */ static int b43_phy_versioning(struct b43_wldev *dev) { struct b43_phy *phy = &dev->phy; const u8 core_rev = dev->dev->core_rev; u32 tmp; u8 analog_type; u8 phy_type; u8 phy_rev; u16 radio_manuf; u16 radio_id; u16 radio_rev; u8 radio_ver; int unsupported = 0; /* Get PHY versioning */ tmp = b43_read16(dev, B43_MMIO_PHY_VER); analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT; phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT; phy_rev = (tmp & B43_PHYVER_VERSION); /* LCNXN is continuation of N which run out of revisions */ if (phy_type == B43_PHYTYPE_LCNXN) { phy_type = B43_PHYTYPE_N; phy_rev += 16; } switch (phy_type) { #ifdef CONFIG_B43_PHY_G case B43_PHYTYPE_G: if (phy_rev > 9) unsupported = 1; break; #endif #ifdef CONFIG_B43_PHY_N case B43_PHYTYPE_N: if (phy_rev >= 19) unsupported = 1; break; #endif #ifdef CONFIG_B43_PHY_LP case B43_PHYTYPE_LP: if (phy_rev > 2) unsupported = 1; break; #endif #ifdef CONFIG_B43_PHY_HT case B43_PHYTYPE_HT: if (phy_rev > 1) unsupported = 1; break; #endif #ifdef CONFIG_B43_PHY_LCN case B43_PHYTYPE_LCN: if (phy_rev > 1) unsupported = 1; break; #endif #ifdef CONFIG_B43_PHY_AC case B43_PHYTYPE_AC: if (phy_rev > 1) unsupported = 1; break; #endif default: unsupported = 1; } if (unsupported) { b43err(dev->wl, "FOUND UNSUPPORTED PHY (Analog %u, Type %d (%s), Revision %u)\n", analog_type, phy_type, b43_phy_name(dev, phy_type), phy_rev); return -EOPNOTSUPP; } b43info(dev->wl, "Found PHY: Analog %u, Type %d (%s), Revision %u\n", analog_type, phy_type, b43_phy_name(dev, phy_type), phy_rev); /* Get RADIO versioning */ if (core_rev == 40 || core_rev == 42) { radio_manuf = 0x17F; b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, 0); radio_rev = b43_read16(dev, B43_MMIO_RADIO24_DATA); b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, 1); radio_id = b43_read16(dev, B43_MMIO_RADIO24_DATA); radio_ver = 0; /* Is there version somewhere? */ } else if (core_rev >= 24) { u16 radio24[3]; for (tmp = 0; tmp < 3; tmp++) { b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, tmp); radio24[tmp] = b43_read16(dev, B43_MMIO_RADIO24_DATA); } radio_manuf = 0x17F; radio_id = (radio24[2] << 8) | radio24[1]; radio_rev = (radio24[0] & 0xF); radio_ver = (radio24[0] & 0xF0) >> 4; } else { if (dev->dev->chip_id == 0x4317) { if (dev->dev->chip_rev == 0) tmp = 0x3205017F; else if (dev->dev->chip_rev == 1) tmp = 0x4205017F; else tmp = 0x5205017F; } else { b43_write16f(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW); b43_write16f(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16; } radio_manuf = (tmp & 0x00000FFF); radio_id = (tmp & 0x0FFFF000) >> 12; radio_rev = (tmp & 0xF0000000) >> 28; radio_ver = 0; /* Probably not available on old hw */ } if (radio_manuf != 0x17F /* Broadcom */) unsupported = 1; switch (phy_type) { case B43_PHYTYPE_B: if ((radio_id & 0xFFF0) != 0x2050) unsupported = 1; break; case B43_PHYTYPE_G: if (radio_id != 0x2050) unsupported = 1; break; case B43_PHYTYPE_N: if (radio_id != 0x2055 && radio_id != 0x2056 && radio_id != 0x2057) unsupported = 1; if (radio_id == 0x2057 && !(radio_rev == 9 || radio_rev == 14)) unsupported = 1; break; case B43_PHYTYPE_LP: if (radio_id != 0x2062 && radio_id != 0x2063) unsupported = 1; break; case B43_PHYTYPE_HT: if (radio_id != 0x2059) unsupported = 1; break; case B43_PHYTYPE_LCN: if (radio_id != 0x2064) unsupported = 1; break; case B43_PHYTYPE_AC: if (radio_id != 0x2069) unsupported = 1; break; default: B43_WARN_ON(1); } if (unsupported) { b43err(dev->wl, "FOUND UNSUPPORTED RADIO (Manuf 0x%X, ID 0x%X, Revision %u, Version %u)\n", radio_manuf, radio_id, radio_rev, radio_ver); return -EOPNOTSUPP; } b43info(dev->wl, "Found Radio: Manuf 0x%X, ID 0x%X, Revision %u, Version %u\n", radio_manuf, radio_id, radio_rev, radio_ver); /* FIXME: b43 treats "id" as "ver" and ignores the real "ver" */ phy->radio_manuf = radio_manuf; phy->radio_ver = radio_id; phy->radio_rev = radio_rev; phy->analog = analog_type; phy->type = phy_type; phy->rev = phy_rev; return 0; } static void setup_struct_phy_for_init(struct b43_wldev *dev, struct b43_phy *phy) { phy->hardware_power_control = !!modparam_hwpctl; phy->next_txpwr_check_time = jiffies; /* PHY TX errors counter. */ atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT); #if B43_DEBUG phy->phy_locked = false; phy->radio_locked = false; #endif } static void setup_struct_wldev_for_init(struct b43_wldev *dev) { dev->dfq_valid = false; /* Assume the radio is enabled. If it's not enabled, the state will * immediately get fixed on the first periodic work run. */ dev->radio_hw_enable = true; /* Stats */ memset(&dev->stats, 0, sizeof(dev->stats)); setup_struct_phy_for_init(dev, &dev->phy); /* IRQ related flags */ dev->irq_reason = 0; memset(dev->dma_reason, 0, sizeof(dev->dma_reason)); dev->irq_mask = B43_IRQ_MASKTEMPLATE; if (b43_modparam_verbose < B43_VERBOSITY_DEBUG) dev->irq_mask &= ~B43_IRQ_PHY_TXERR; dev->mac_suspended = 1; /* Noise calculation context */ memset(&dev->noisecalc, 0, sizeof(dev->noisecalc)); } static void b43_bluetooth_coext_enable(struct b43_wldev *dev) { struct ssb_sprom *sprom = dev->dev->bus_sprom; u64 hf; if (!modparam_btcoex) return; if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST)) return; if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode) return; hf = b43_hf_read(dev); if (sprom->boardflags_lo & B43_BFL_BTCMOD) hf |= B43_HF_BTCOEXALT; else hf |= B43_HF_BTCOEX; b43_hf_write(dev, hf); } static void b43_bluetooth_coext_disable(struct b43_wldev *dev) { if (!modparam_btcoex) return; //TODO } static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev) { struct ssb_bus *bus; u32 tmp; #ifdef CONFIG_B43_SSB if (dev->dev->bus_type != B43_BUS_SSB) return; #else return; #endif bus = dev->dev->sdev->bus; if ((bus->chip_id == 0x4311 && bus->chip_rev == 2) || (bus->chip_id == 0x4312)) { tmp = ssb_read32(dev->dev->sdev, SSB_IMCFGLO); tmp &= ~SSB_IMCFGLO_REQTO; tmp &= ~SSB_IMCFGLO_SERTO; tmp |= 0x3; ssb_write32(dev->dev->sdev, SSB_IMCFGLO, tmp); ssb_commit_settings(bus); } } static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle) { u16 pu_delay; /* The time value is in microseconds. */ pu_delay = 1050; if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle) pu_delay = 500; if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8)) pu_delay = max(pu_delay, (u16)2400); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay); } /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */ static void b43_set_pretbtt(struct b43_wldev *dev) { u16 pretbtt; /* The time value is in microseconds. */ if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) pretbtt = 2; else pretbtt = 250; b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt); b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt); } /* Shutdown a wireless core */ /* Locking: wl->mutex */ static void b43_wireless_core_exit(struct b43_wldev *dev) { B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED); if (!dev || b43_status(dev) != B43_STAT_INITIALIZED) return; b43_set_status(dev, B43_STAT_UNINIT); /* Stop the microcode PSM. */ b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN, B43_MACCTL_PSM_JMP0); switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: bcma_host_pci_down(dev->dev->bdev->bus); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: /* TODO */ break; #endif } b43_dma_free(dev); b43_pio_free(dev); b43_chip_exit(dev); dev->phy.ops->switch_analog(dev, 0); if (dev->wl->current_beacon) { dev_kfree_skb_any(dev->wl->current_beacon); dev->wl->current_beacon = NULL; } b43_device_disable(dev, 0); b43_bus_may_powerdown(dev); } /* Initialize a wireless core */ static int b43_wireless_core_init(struct b43_wldev *dev) { struct ssb_sprom *sprom = dev->dev->bus_sprom; struct b43_phy *phy = &dev->phy; int err; u64 hf; B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT); err = b43_bus_powerup(dev, 0); if (err) goto out; if (!b43_device_is_enabled(dev)) b43_wireless_core_reset(dev, phy->gmode); /* Reset all data structures. */ setup_struct_wldev_for_init(dev); phy->ops->prepare_structs(dev); /* Enable IRQ routing to this device. */ switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: bcma_host_pci_irq_ctl(dev->dev->bdev->bus, dev->dev->bdev, true); bcma_host_pci_up(dev->dev->bdev->bus); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: ssb_pcicore_dev_irqvecs_enable(&dev->dev->sdev->bus->pcicore, dev->dev->sdev); break; #endif } b43_imcfglo_timeouts_workaround(dev); b43_bluetooth_coext_disable(dev); if (phy->ops->prepare_hardware) { err = phy->ops->prepare_hardware(dev); if (err) goto err_busdown; } err = b43_chip_init(dev); if (err) goto err_busdown; b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_WLCOREREV, dev->dev->core_rev); hf = b43_hf_read(dev); if (phy->type == B43_PHYTYPE_G) { hf |= B43_HF_SYMW; if (phy->rev == 1) hf |= B43_HF_GDCW; if (sprom->boardflags_lo & B43_BFL_PACTRL) hf |= B43_HF_OFDMPABOOST; } if (phy->radio_ver == 0x2050) { if (phy->radio_rev == 6) hf |= B43_HF_4318TSSI; if (phy->radio_rev < 6) hf |= B43_HF_VCORECALC; } if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW) hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */ #if defined(CONFIG_B43_SSB) && defined(CONFIG_SSB_DRIVER_PCICORE) if (dev->dev->bus_type == B43_BUS_SSB && dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI && dev->dev->sdev->bus->pcicore.dev->id.revision <= 10) hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */ #endif hf &= ~B43_HF_SKCFPUP; b43_hf_write(dev, hf); /* tell the ucode MAC capabilities */ if (dev->dev->core_rev >= 13) { u32 mac_hw_cap = b43_read32(dev, B43_MMIO_MAC_HW_CAP); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_MACHW_L, mac_hw_cap & 0xffff); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_MACHW_H, (mac_hw_cap >> 16) & 0xffff); } b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT, B43_DEFAULT_LONG_RETRY_LIMIT); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2); /* Disable sending probe responses from firmware. * Setting the MaxTime to one usec will always trigger * a timeout, so we never send any probe resp. * A timeout of zero is infinite. */ b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1); b43_rate_memory_init(dev); b43_set_phytxctl_defaults(dev); /* Minimum Contention Window */ if (phy->type == B43_PHYTYPE_B) b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F); else b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF); /* Maximum Contention Window */ b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF); /* write phytype and phyvers */ b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PHYTYPE, phy->type); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PHYVER, phy->rev); if (b43_bus_host_is_pcmcia(dev->dev) || b43_bus_host_is_sdio(dev->dev)) { dev->__using_pio_transfers = true; err = b43_pio_init(dev); } else if (dev->use_pio) { b43warn(dev->wl, "Forced PIO by use_pio module parameter. " "This should not be needed and will result in lower " "performance.\n"); dev->__using_pio_transfers = true; err = b43_pio_init(dev); } else { dev->__using_pio_transfers = false; err = b43_dma_init(dev); } if (err) goto err_chip_exit; b43_qos_init(dev); b43_set_synth_pu_delay(dev, 1); b43_bluetooth_coext_enable(dev); b43_bus_powerup(dev, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)); b43_upload_card_macaddress(dev); b43_security_init(dev); ieee80211_wake_queues(dev->wl->hw); b43_set_status(dev, B43_STAT_INITIALIZED); out: return err; err_chip_exit: b43_chip_exit(dev); err_busdown: b43_bus_may_powerdown(dev); B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT); return err; } static int b43_op_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; int err = -EOPNOTSUPP; /* TODO: allow WDS/AP devices to coexist */ if (vif->type != NL80211_IFTYPE_AP && vif->type != NL80211_IFTYPE_MESH_POINT && vif->type != NL80211_IFTYPE_STATION && vif->type != NL80211_IFTYPE_WDS && vif->type != NL80211_IFTYPE_ADHOC) return -EOPNOTSUPP; mutex_lock(&wl->mutex); if (wl->operating) goto out_mutex_unlock; b43dbg(wl, "Adding Interface type %d\n", vif->type); dev = wl->current_dev; wl->operating = true; wl->vif = vif; wl->if_type = vif->type; memcpy(wl->mac_addr, vif->addr, ETH_ALEN); b43_adjust_opmode(dev); b43_set_pretbtt(dev); b43_set_synth_pu_delay(dev, 0); b43_upload_card_macaddress(dev); err = 0; out_mutex_unlock: mutex_unlock(&wl->mutex); if (err == 0) b43_op_bss_info_changed(hw, vif, &vif->bss_conf, ~0); return err; } static void b43_op_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; b43dbg(wl, "Removing Interface type %d\n", vif->type); mutex_lock(&wl->mutex); B43_WARN_ON(!wl->operating); B43_WARN_ON(wl->vif != vif); wl->vif = NULL; wl->operating = false; b43_adjust_opmode(dev); eth_zero_addr(wl->mac_addr); b43_upload_card_macaddress(dev); mutex_unlock(&wl->mutex); } static int b43_op_start(struct ieee80211_hw *hw) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; int did_init = 0; int err = 0; /* Kill all old instance specific information to make sure * the card won't use it in the short timeframe between start * and mac80211 reconfiguring it. */ eth_zero_addr(wl->bssid); eth_zero_addr(wl->mac_addr); wl->filter_flags = 0; wl->radiotap_enabled = false; b43_qos_clear(wl); wl->beacon0_uploaded = false; wl->beacon1_uploaded = false; wl->beacon_templates_virgin = true; wl->radio_enabled = true; mutex_lock(&wl->mutex); if (b43_status(dev) < B43_STAT_INITIALIZED) { err = b43_wireless_core_init(dev); if (err) goto out_mutex_unlock; did_init = 1; } if (b43_status(dev) < B43_STAT_STARTED) { err = b43_wireless_core_start(dev); if (err) { if (did_init) b43_wireless_core_exit(dev); goto out_mutex_unlock; } } /* XXX: only do if device doesn't support rfkill irq */ wiphy_rfkill_start_polling(hw->wiphy); out_mutex_unlock: mutex_unlock(&wl->mutex); /* * Configuration may have been overwritten during initialization. * Reload the configuration, but only if initialization was * successful. Reloading the configuration after a failed init * may hang the system. */ if (!err) b43_op_config(hw, ~0); return err; } static void b43_op_stop(struct ieee80211_hw *hw) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; cancel_work_sync(&(wl->beacon_update_trigger)); if (!dev) goto out; mutex_lock(&wl->mutex); if (b43_status(dev) >= B43_STAT_STARTED) { dev = b43_wireless_core_stop(dev); if (!dev) goto out_unlock; } b43_wireless_core_exit(dev); wl->radio_enabled = false; out_unlock: mutex_unlock(&wl->mutex); out: cancel_work_sync(&(wl->txpower_adjust_work)); } static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set) { struct b43_wl *wl = hw_to_b43_wl(hw); b43_update_templates(wl); return 0; } static void b43_op_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum sta_notify_cmd notify_cmd, struct ieee80211_sta *sta) { struct b43_wl *wl = hw_to_b43_wl(hw); B43_WARN_ON(!vif || wl->vif != vif); } static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw, struct ieee80211_vif *vif, const u8 *mac_addr) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; mutex_lock(&wl->mutex); dev = wl->current_dev; if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) { /* Disable CFP update during scan on other channels. */ b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP); } mutex_unlock(&wl->mutex); } static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; mutex_lock(&wl->mutex); dev = wl->current_dev; if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) { /* Re-enable CFP update. */ b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP); } mutex_unlock(&wl->mutex); } static int b43_op_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; struct ieee80211_conf *conf = &hw->conf; if (idx != 0) return -ENOENT; survey->channel = conf->chandef.chan; survey->filled = SURVEY_INFO_NOISE_DBM; survey->noise = dev->stats.link_noise; return 0; } static const struct ieee80211_ops b43_hw_ops = { .tx = b43_op_tx, .conf_tx = b43_op_conf_tx, .add_interface = b43_op_add_interface, .remove_interface = b43_op_remove_interface, .config = b43_op_config, .bss_info_changed = b43_op_bss_info_changed, .configure_filter = b43_op_configure_filter, .set_key = b43_op_set_key, .update_tkip_key = b43_op_update_tkip_key, .get_stats = b43_op_get_stats, .get_tsf = b43_op_get_tsf, .set_tsf = b43_op_set_tsf, .start = b43_op_start, .stop = b43_op_stop, .set_tim = b43_op_beacon_set_tim, .sta_notify = b43_op_sta_notify, .sw_scan_start = b43_op_sw_scan_start_notifier, .sw_scan_complete = b43_op_sw_scan_complete_notifier, .get_survey = b43_op_get_survey, .rfkill_poll = b43_rfkill_poll, }; /* Hard-reset the chip. Do not call this directly. * Use b43_controller_restart() */ static void b43_chip_reset(struct work_struct *work) { struct b43_wldev *dev = container_of(work, struct b43_wldev, restart_work); struct b43_wl *wl = dev->wl; int err = 0; int prev_status; mutex_lock(&wl->mutex); prev_status = b43_status(dev); /* Bring the device down... */ if (prev_status >= B43_STAT_STARTED) { dev = b43_wireless_core_stop(dev); if (!dev) { err = -ENODEV; goto out; } } if (prev_status >= B43_STAT_INITIALIZED) b43_wireless_core_exit(dev); /* ...and up again. */ if (prev_status >= B43_STAT_INITIALIZED) { err = b43_wireless_core_init(dev); if (err) goto out; } if (prev_status >= B43_STAT_STARTED) { err = b43_wireless_core_start(dev); if (err) { b43_wireless_core_exit(dev); goto out; } } out: if (err) wl->current_dev = NULL; /* Failed to init the dev. */ mutex_unlock(&wl->mutex); if (err) { b43err(wl, "Controller restart FAILED\n"); return; } /* reload configuration */ b43_op_config(wl->hw, ~0); if (wl->vif) b43_op_bss_info_changed(wl->hw, wl->vif, &wl->vif->bss_conf, ~0); b43info(wl, "Controller restarted\n"); } static int b43_setup_bands(struct b43_wldev *dev, bool have_2ghz_phy, bool have_5ghz_phy) { struct ieee80211_hw *hw = dev->wl->hw; struct b43_phy *phy = &dev->phy; bool limited_2g; bool limited_5g; /* We don't support all 2 GHz channels on some devices */ limited_2g = phy->radio_ver == 0x2057 && (phy->radio_rev == 9 || phy->radio_rev == 14); limited_5g = phy->radio_ver == 0x2057 && phy->radio_rev == 9; if (have_2ghz_phy) hw->wiphy->bands[NL80211_BAND_2GHZ] = limited_2g ? &b43_band_2ghz_limited : &b43_band_2GHz; if (dev->phy.type == B43_PHYTYPE_N) { if (have_5ghz_phy) hw->wiphy->bands[NL80211_BAND_5GHZ] = limited_5g ? &b43_band_5GHz_nphy_limited : &b43_band_5GHz_nphy; } else { if (have_5ghz_phy) hw->wiphy->bands[NL80211_BAND_5GHZ] = &b43_band_5GHz_aphy; } dev->phy.supports_2ghz = have_2ghz_phy; dev->phy.supports_5ghz = have_5ghz_phy; return 0; } static void b43_wireless_core_detach(struct b43_wldev *dev) { /* We release firmware that late to not be required to re-request * is all the time when we reinit the core. */ b43_release_firmware(dev); b43_phy_free(dev); } static void b43_supported_bands(struct b43_wldev *dev, bool *have_2ghz_phy, bool *have_5ghz_phy) { u16 dev_id = 0; #ifdef CONFIG_B43_BCMA if (dev->dev->bus_type == B43_BUS_BCMA && dev->dev->bdev->bus->hosttype == BCMA_HOSTTYPE_PCI) dev_id = dev->dev->bdev->bus->host_pci->device; #endif #ifdef CONFIG_B43_SSB if (dev->dev->bus_type == B43_BUS_SSB && dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI) dev_id = dev->dev->sdev->bus->host_pci->device; #endif /* Override with SPROM value if available */ if (dev->dev->bus_sprom->dev_id) dev_id = dev->dev->bus_sprom->dev_id; /* Note: below IDs can be "virtual" (not maching e.g. real PCI ID) */ switch (dev_id) { case 0x4324: /* BCM4306 */ case 0x4312: /* BCM4311 */ case 0x4319: /* BCM4318 */ case 0x4328: /* BCM4321 */ case 0x432b: /* BCM4322 */ case 0x4350: /* BCM43222 */ case 0x4353: /* BCM43224 */ case 0x0576: /* BCM43224 */ case 0x435f: /* BCM6362 */ case 0x4331: /* BCM4331 */ case 0x4359: /* BCM43228 */ case 0x43a0: /* BCM4360 */ case 0x43b1: /* BCM4352 */ /* Dual band devices */ *have_2ghz_phy = true; *have_5ghz_phy = true; return; case 0x4321: /* BCM4306 */ /* There are 14e4:4321 PCI devs with 2.4 GHz BCM4321 (N-PHY) */ if (dev->phy.type != B43_PHYTYPE_G) break; /* fall through */ case 0x4313: /* BCM4311 */ case 0x431a: /* BCM4318 */ case 0x432a: /* BCM4321 */ case 0x432d: /* BCM4322 */ case 0x4352: /* BCM43222 */ case 0x435a: /* BCM43228 */ case 0x4333: /* BCM4331 */ case 0x43a2: /* BCM4360 */ case 0x43b3: /* BCM4352 */ /* 5 GHz only devices */ *have_2ghz_phy = false; *have_5ghz_phy = true; return; } /* As a fallback, try to guess using PHY type */ switch (dev->phy.type) { case B43_PHYTYPE_G: case B43_PHYTYPE_N: case B43_PHYTYPE_LP: case B43_PHYTYPE_HT: case B43_PHYTYPE_LCN: *have_2ghz_phy = true; *have_5ghz_phy = false; return; } B43_WARN_ON(1); } static int b43_wireless_core_attach(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; struct b43_phy *phy = &dev->phy; int err; u32 tmp; bool have_2ghz_phy = false, have_5ghz_phy = false; /* Do NOT do any device initialization here. * Do it in wireless_core_init() instead. * This function is for gathering basic information about the HW, only. * Also some structs may be set up here. But most likely you want to have * that in core_init(), too. */ err = b43_bus_powerup(dev, 0); if (err) { b43err(wl, "Bus powerup failed\n"); goto out; } phy->do_full_init = true; /* Try to guess supported bands for the first init needs */ switch (dev->dev->bus_type) { #ifdef CONFIG_B43_BCMA case B43_BUS_BCMA: tmp = bcma_aread32(dev->dev->bdev, BCMA_IOST); have_2ghz_phy = !!(tmp & B43_BCMA_IOST_2G_PHY); have_5ghz_phy = !!(tmp & B43_BCMA_IOST_5G_PHY); break; #endif #ifdef CONFIG_B43_SSB case B43_BUS_SSB: if (dev->dev->core_rev >= 5) { tmp = ssb_read32(dev->dev->sdev, SSB_TMSHIGH); have_2ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_2GHZ_PHY); have_5ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_5GHZ_PHY); } else B43_WARN_ON(1); break; #endif } dev->phy.gmode = have_2ghz_phy; b43_wireless_core_reset(dev, dev->phy.gmode); /* Get the PHY type. */ err = b43_phy_versioning(dev); if (err) goto err_powerdown; /* Get real info about supported bands */ b43_supported_bands(dev, &have_2ghz_phy, &have_5ghz_phy); /* We don't support 5 GHz on some PHYs yet */ if (have_5ghz_phy) { switch (dev->phy.type) { case B43_PHYTYPE_G: case B43_PHYTYPE_LP: case B43_PHYTYPE_HT: b43warn(wl, "5 GHz band is unsupported on this PHY\n"); have_5ghz_phy = false; } } if (!have_2ghz_phy && !have_5ghz_phy) { b43err(wl, "b43 can't support any band on this device\n"); err = -EOPNOTSUPP; goto err_powerdown; } err = b43_phy_allocate(dev); if (err) goto err_powerdown; dev->phy.gmode = have_2ghz_phy; b43_wireless_core_reset(dev, dev->phy.gmode); err = b43_validate_chipaccess(dev); if (err) goto err_phy_free; err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy); if (err) goto err_phy_free; /* Now set some default "current_dev" */ if (!wl->current_dev) wl->current_dev = dev; INIT_WORK(&dev->restart_work, b43_chip_reset); dev->phy.ops->switch_analog(dev, 0); b43_device_disable(dev, 0); b43_bus_may_powerdown(dev); out: return err; err_phy_free: b43_phy_free(dev); err_powerdown: b43_bus_may_powerdown(dev); return err; } static void b43_one_core_detach(struct b43_bus_dev *dev) { struct b43_wldev *wldev; struct b43_wl *wl; /* Do not cancel ieee80211-workqueue based work here. * See comment in b43_remove(). */ wldev = b43_bus_get_wldev(dev); wl = wldev->wl; b43_debugfs_remove_device(wldev); b43_wireless_core_detach(wldev); list_del(&wldev->list); b43_bus_set_wldev(dev, NULL); kfree(wldev); } static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl) { struct b43_wldev *wldev; int err = -ENOMEM; wldev = kzalloc(sizeof(*wldev), GFP_KERNEL); if (!wldev) goto out; wldev->use_pio = b43_modparam_pio; wldev->dev = dev; wldev->wl = wl; b43_set_status(wldev, B43_STAT_UNINIT); wldev->bad_frames_preempt = modparam_bad_frames_preempt; INIT_LIST_HEAD(&wldev->list); err = b43_wireless_core_attach(wldev); if (err) goto err_kfree_wldev; b43_bus_set_wldev(dev, wldev); b43_debugfs_add_device(wldev); out: return err; err_kfree_wldev: kfree(wldev); return err; } #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \ (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \ (pdev->device == _device) && \ (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \ (pdev->subsystem_device == _subdevice) ) #ifdef CONFIG_B43_SSB static void b43_sprom_fixup(struct ssb_bus *bus) { struct pci_dev *pdev; /* boardflags workarounds */ if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL && bus->chip_id == 0x4301 && bus->sprom.board_rev == 0x74) bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST; if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && bus->boardinfo.type == 0x4E && bus->sprom.board_rev > 0x40) bus->sprom.boardflags_lo |= B43_BFL_PACTRL; if (bus->bustype == SSB_BUSTYPE_PCI) { pdev = bus->host_pci; if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) || IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) || IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) || IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) || IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) || IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) || IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010)) bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST; } } static void b43_wireless_exit(struct b43_bus_dev *dev, struct b43_wl *wl) { struct ieee80211_hw *hw = wl->hw; ssb_set_devtypedata(dev->sdev, NULL); ieee80211_free_hw(hw); } #endif static struct b43_wl *b43_wireless_init(struct b43_bus_dev *dev) { struct ssb_sprom *sprom = dev->bus_sprom; struct ieee80211_hw *hw; struct b43_wl *wl; char chip_name[6]; int queue_num; hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops); if (!hw) { b43err(NULL, "Could not allocate ieee80211 device\n"); return ERR_PTR(-ENOMEM); } wl = hw_to_b43_wl(hw); /* fill hw info */ ieee80211_hw_set(hw, RX_INCLUDES_FCS); ieee80211_hw_set(hw, SIGNAL_DBM); hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_AP) | BIT(NL80211_IFTYPE_MESH_POINT) | BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_WDS) | BIT(NL80211_IFTYPE_ADHOC); hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; wl->hw_registred = false; hw->max_rates = 2; SET_IEEE80211_DEV(hw, dev->dev); if (is_valid_ether_addr(sprom->et1mac)) SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac); else SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac); /* Initialize struct b43_wl */ wl->hw = hw; mutex_init(&wl->mutex); spin_lock_init(&wl->hardirq_lock); spin_lock_init(&wl->beacon_lock); INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work); INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work); INIT_WORK(&wl->tx_work, b43_tx_work); /* Initialize queues and flags. */ for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) { skb_queue_head_init(&wl->tx_queue[queue_num]); wl->tx_queue_stopped[queue_num] = 0; } snprintf(chip_name, ARRAY_SIZE(chip_name), (dev->chip_id > 0x9999) ? "%d" : "%04X", dev->chip_id); b43info(wl, "Broadcom %s WLAN found (core revision %u)\n", chip_name, dev->core_rev); return wl; } #ifdef CONFIG_B43_BCMA static int b43_bcma_probe(struct bcma_device *core) { struct b43_bus_dev *dev; struct b43_wl *wl; int err; if (!modparam_allhwsupport && (core->id.rev == 0x17 || core->id.rev == 0x18)) { pr_err("Support for cores revisions 0x17 and 0x18 disabled by module param allhwsupport=0. Try b43.allhwsupport=1\n"); return -ENOTSUPP; } dev = b43_bus_dev_bcma_init(core); if (!dev) return -ENODEV; wl = b43_wireless_init(dev); if (IS_ERR(wl)) { err = PTR_ERR(wl); goto bcma_out; } err = b43_one_core_attach(dev, wl); if (err) goto bcma_err_wireless_exit; /* setup and start work to load firmware */ INIT_WORK(&wl->firmware_load, b43_request_firmware); schedule_work(&wl->firmware_load); return err; bcma_err_wireless_exit: ieee80211_free_hw(wl->hw); bcma_out: kfree(dev); return err; } static void b43_bcma_remove(struct bcma_device *core) { struct b43_wldev *wldev = bcma_get_drvdata(core); struct b43_wl *wl = wldev->wl; /* We must cancel any work here before unregistering from ieee80211, * as the ieee80211 unreg will destroy the workqueue. */ cancel_work_sync(&wldev->restart_work); cancel_work_sync(&wl->firmware_load); B43_WARN_ON(!wl); if (!wldev->fw.ucode.data) return; /* NULL if firmware never loaded */ if (wl->current_dev == wldev && wl->hw_registred) { b43_leds_stop(wldev); ieee80211_unregister_hw(wl->hw); } b43_one_core_detach(wldev->dev); /* Unregister HW RNG driver */ b43_rng_exit(wl); b43_leds_unregister(wl); ieee80211_free_hw(wl->hw); kfree(wldev->dev); } static struct bcma_driver b43_bcma_driver = { .name = KBUILD_MODNAME, .id_table = b43_bcma_tbl, .probe = b43_bcma_probe, .remove = b43_bcma_remove, }; #endif #ifdef CONFIG_B43_SSB static int b43_ssb_probe(struct ssb_device *sdev, const struct ssb_device_id *id) { struct b43_bus_dev *dev; struct b43_wl *wl; int err; dev = b43_bus_dev_ssb_init(sdev); if (!dev) return -ENOMEM; wl = ssb_get_devtypedata(sdev); if (wl) { b43err(NULL, "Dual-core devices are not supported\n"); err = -ENOTSUPP; goto err_ssb_kfree_dev; } b43_sprom_fixup(sdev->bus); wl = b43_wireless_init(dev); if (IS_ERR(wl)) { err = PTR_ERR(wl); goto err_ssb_kfree_dev; } ssb_set_devtypedata(sdev, wl); B43_WARN_ON(ssb_get_devtypedata(sdev) != wl); err = b43_one_core_attach(dev, wl); if (err) goto err_ssb_wireless_exit; /* setup and start work to load firmware */ INIT_WORK(&wl->firmware_load, b43_request_firmware); schedule_work(&wl->firmware_load); return err; err_ssb_wireless_exit: b43_wireless_exit(dev, wl); err_ssb_kfree_dev: kfree(dev); return err; } static void b43_ssb_remove(struct ssb_device *sdev) { struct b43_wl *wl = ssb_get_devtypedata(sdev); struct b43_wldev *wldev = ssb_get_drvdata(sdev); struct b43_bus_dev *dev = wldev->dev; /* We must cancel any work here before unregistering from ieee80211, * as the ieee80211 unreg will destroy the workqueue. */ cancel_work_sync(&wldev->restart_work); cancel_work_sync(&wl->firmware_load); B43_WARN_ON(!wl); if (!wldev->fw.ucode.data) return; /* NULL if firmware never loaded */ if (wl->current_dev == wldev && wl->hw_registred) { b43_leds_stop(wldev); ieee80211_unregister_hw(wl->hw); } b43_one_core_detach(dev); /* Unregister HW RNG driver */ b43_rng_exit(wl); b43_leds_unregister(wl); b43_wireless_exit(dev, wl); kfree(dev); } static struct ssb_driver b43_ssb_driver = { .name = KBUILD_MODNAME, .id_table = b43_ssb_tbl, .probe = b43_ssb_probe, .remove = b43_ssb_remove, }; #endif /* CONFIG_B43_SSB */ /* Perform a hardware reset. This can be called from any context. */ void b43_controller_restart(struct b43_wldev *dev, const char *reason) { /* Must avoid requeueing, if we are in shutdown. */ if (b43_status(dev) < B43_STAT_INITIALIZED) return; b43info(dev->wl, "Controller RESET (%s) ...\n", reason); ieee80211_queue_work(dev->wl->hw, &dev->restart_work); } static void b43_print_driverinfo(void) { const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "", *feat_leds = "", *feat_sdio = ""; #ifdef CONFIG_B43_PCI_AUTOSELECT feat_pci = "P"; #endif #ifdef CONFIG_B43_PCMCIA feat_pcmcia = "M"; #endif #ifdef CONFIG_B43_PHY_N feat_nphy = "N"; #endif #ifdef CONFIG_B43_LEDS feat_leds = "L"; #endif #ifdef CONFIG_B43_SDIO feat_sdio = "S"; #endif printk(KERN_INFO "Broadcom 43xx driver loaded " "[ Features: %s%s%s%s%s ]\n", feat_pci, feat_pcmcia, feat_nphy, feat_leds, feat_sdio); } static int __init b43_init(void) { int err; b43_debugfs_init(); err = b43_sdio_init(); if (err) goto err_dfs_exit; #ifdef CONFIG_B43_BCMA err = bcma_driver_register(&b43_bcma_driver); if (err) goto err_sdio_exit; #endif #ifdef CONFIG_B43_SSB err = ssb_driver_register(&b43_ssb_driver); if (err) goto err_bcma_driver_exit; #endif b43_print_driverinfo(); return err; #ifdef CONFIG_B43_SSB err_bcma_driver_exit: #endif #ifdef CONFIG_B43_BCMA bcma_driver_unregister(&b43_bcma_driver); err_sdio_exit: #endif b43_sdio_exit(); err_dfs_exit: b43_debugfs_exit(); return err; } static void __exit b43_exit(void) { #ifdef CONFIG_B43_SSB ssb_driver_unregister(&b43_ssb_driver); #endif #ifdef CONFIG_B43_BCMA bcma_driver_unregister(&b43_bcma_driver); #endif b43_sdio_exit(); b43_debugfs_exit(); } module_init(b43_init) module_exit(b43_exit)