/* 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 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 "pcmcia.h" MODULE_DESCRIPTION("Broadcom B43 wireless driver"); MODULE_AUTHOR("Martin Langer"); MODULE_AUTHOR("Stefano Brivio"); MODULE_AUTHOR("Michael Buesch"); MODULE_LICENSE("GPL"); MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID); 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_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 coexistance (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 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, 13), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16), SSB_DEVTABLE_END }; MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl); /* 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 CHAN4G(_channel, _freq, _flags) { \ .band = IEEE80211_BAND_2GHZ, \ .center_freq = (_freq), \ .hw_value = (_channel), \ .flags = (_flags), \ .max_antenna_gain = 0, \ .max_power = 30, \ } static struct ieee80211_channel b43_2ghz_chantable[] = { CHAN4G(1, 2412, 0), CHAN4G(2, 2417, 0), CHAN4G(3, 2422, 0), CHAN4G(4, 2427, 0), CHAN4G(5, 2432, 0), CHAN4G(6, 2437, 0), CHAN4G(7, 2442, 0), CHAN4G(8, 2447, 0), CHAN4G(9, 2452, 0), CHAN4G(10, 2457, 0), CHAN4G(11, 2462, 0), CHAN4G(12, 2467, 0), CHAN4G(13, 2472, 0), CHAN4G(14, 2484, 0), }; #undef CHAN4G #define CHAN5G(_channel, _flags) { \ .band = IEEE80211_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[] = { 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), CHAN5G(184, 0), CHAN5G(186, 0), CHAN5G(188, 0), CHAN5G(190, 0), CHAN5G(192, 0), CHAN5G(194, 0), CHAN5G(196, 0), CHAN5G(198, 0), CHAN5G(200, 0), CHAN5G(202, 0), CHAN5G(204, 0), CHAN5G(206, 0), CHAN5G(208, 0), CHAN5G(210, 0), CHAN5G(212, 0), CHAN5G(214, 0), CHAN5G(216, 0), CHAN5G(218, 0), CHAN5G(220, 0), CHAN5G(222, 0), CHAN5G(224, 0), CHAN5G(226, 0), CHAN5G(228, 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 CHAN5G static struct ieee80211_supported_band b43_band_5GHz_nphy = { .band = IEEE80211_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_aphy = { .band = IEEE80211_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 = IEEE80211_BAND_2GHZ, .channels = b43_2ghz_chantable, .n_channels = ARRAY_SIZE(b43_2ghz_chantable), .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 void b43_wireless_core_stop(struct b43_wldev *dev); static int b43_wireless_core_start(struct b43_wldev *dev); 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, ...) { va_list args; if (b43_modparam_verbose < B43_VERBOSITY_INFO) return; if (!b43_ratelimit(wl)) return; va_start(args, fmt); printk(KERN_INFO "b43-%s: ", (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); vprintk(fmt, args); va_end(args); } void b43err(struct b43_wl *wl, const char *fmt, ...) { va_list args; if (b43_modparam_verbose < B43_VERBOSITY_ERROR) return; if (!b43_ratelimit(wl)) return; va_start(args, fmt); printk(KERN_ERR "b43-%s ERROR: ", (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); vprintk(fmt, args); va_end(args); } void b43warn(struct b43_wl *wl, const char *fmt, ...) { va_list args; if (b43_modparam_verbose < B43_VERBOSITY_WARN) return; if (!b43_ratelimit(wl)) return; va_start(args, fmt); printk(KERN_WARNING "b43-%s warning: ", (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); vprintk(fmt, args); va_end(args); } void b43dbg(struct b43_wl *wl, const char *fmt, ...) { va_list args; if (b43_modparam_verbose < B43_VERBOSITY_DEBUG) return; va_start(args, fmt); printk(KERN_DEBUG "b43-%s debug: ", (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); vprintk(fmt, args); 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); ret <<= 16; b43_shm_control_word(dev, routing, (offset >> 2) + 1); ret |= b43_read16(dev, B43_MMIO_SHM_DATA); goto out; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); ret = b43_read32(dev, B43_MMIO_SHM_DATA); out: return ret; } u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset) { struct b43_wl *wl = dev->wl; unsigned long flags; u32 ret; spin_lock_irqsave(&wl->shm_lock, flags); ret = __b43_shm_read32(dev, routing, offset); spin_unlock_irqrestore(&wl->shm_lock, flags); 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; } u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset) { struct b43_wl *wl = dev->wl; unsigned long flags; u16 ret; spin_lock_irqsave(&wl->shm_lock, flags); ret = __b43_shm_read16(dev, routing, offset); spin_unlock_irqrestore(&wl->shm_lock, flags); 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 >> 16) & 0xffff); b43_shm_control_word(dev, routing, (offset >> 2) + 1); b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff); return; } offset >>= 2; } b43_shm_control_word(dev, routing, offset); b43_write32(dev, B43_MMIO_SHM_DATA, value); } void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value) { struct b43_wl *wl = dev->wl; unsigned long flags; spin_lock_irqsave(&wl->shm_lock, flags); __b43_shm_write32(dev, routing, offset, value); spin_unlock_irqrestore(&wl->shm_lock, flags); } 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); } void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value) { struct b43_wl *wl = dev->wl; unsigned long flags; spin_lock_irqsave(&wl->shm_lock, flags); __b43_shm_write16(dev, routing, offset, value); spin_unlock_irqrestore(&wl->shm_lock, flags); } /* Read HostFlags */ u64 b43_hf_read(struct b43_wldev *dev) { u64 ret; ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI); ret <<= 16; ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI); ret <<= 16; ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO); 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_HOSTFLO, lo); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, 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->id.revision < 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) { u32 macctl; macctl = b43_read32(dev, B43_MMIO_MACCTL); macctl |= B43_MACCTL_TBTTHOLD; b43_write32(dev, B43_MMIO_MACCTL, macctl); /* Commit the write */ b43_read32(dev, B43_MMIO_MACCTL); } static void b43_time_unlock(struct b43_wldev *dev) { u32 macctl; macctl = b43_read32(dev, B43_MMIO_MACCTL); macctl &= ~B43_MACCTL_TBTTHOLD; b43_write32(dev, B43_MMIO_MACCTL, macctl); /* 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->id.revision < 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. */ if (dev->phy.type != B43_PHYTYPE_G) return; b43_write16(dev, 0x684, 510 + slot_time); 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); } /* Synchronize IRQ top- and bottom-half. * IRQs must be masked before calling this. * This must not be called with the irq_lock held. */ static void b43_synchronize_irq(struct b43_wldev *dev) { synchronize_irq(dev->dev->irq); tasklet_kill(&dev->isr_tasklet); } /* DummyTransmission function, as documented on * http://bcm-specs.sipsolutions.net/DummyTransmission */ void b43_dummy_transmission(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; struct b43_phy *phy = &dev->phy; unsigned int i, max_loop; u16 value; u32 buffer[5] = { 0x00000000, 0x00D40000, 0x00000000, 0x01000000, 0x00000000, }; switch (phy->type) { case B43_PHYTYPE_A: max_loop = 0x1E; buffer[0] = 0x000201CC; break; case B43_PHYTYPE_B: case B43_PHYTYPE_G: max_loop = 0xFA; buffer[0] = 0x000B846E; break; default: B43_WARN_ON(1); return; } spin_lock_irq(&wl->irq_lock); write_lock(&wl->tx_lock); for (i = 0; i < 5; i++) b43_ram_write(dev, i * 4, buffer[i]); /* Commit writes */ b43_read32(dev, B43_MMIO_MACCTL); b43_write16(dev, 0x0568, 0x0000); b43_write16(dev, 0x07C0, 0x0000); value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0); b43_write16(dev, 0x050C, value); b43_write16(dev, 0x0508, 0x0000); b43_write16(dev, 0x050A, 0x0000); b43_write16(dev, 0x054C, 0x0000); b43_write16(dev, 0x056A, 0x0014); b43_write16(dev, 0x0568, 0x0826); b43_write16(dev, 0x0500, 0x0000); b43_write16(dev, 0x0502, 0x0030); 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, 0x050E); if (value & 0x0080) break; udelay(10); } for (i = 0x00; i < 0x0A; i++) { value = b43_read16(dev, 0x050E); if (value & 0x0400) break; udelay(10); } for (i = 0x00; i < 0x19; i++) { value = b43_read16(dev, 0x0690); if (!(value & 0x0100)) break; udelay(10); } if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) b43_radio_write16(dev, 0x0051, 0x0037); write_unlock(&wl->tx_lock); spin_unlock_irq(&wl->irq_lock); } 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 per_sta_keys_start = 8; if (b43_new_kidx_api(dev)) per_sta_keys_start = 4; B43_WARN_ON(index < per_sta_keys_start); /* We have two default TX keys and possibly two 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 -= per_sta_keys_start; 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); } if (dev->dev->id.revision >= 5) { /* Receive match transmitter address 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]); } else { /* RXE (Receive Engine) and * PSM (Programmable State Machine) mechanism */ if (index < 8) { /* TODO write to RCM 16, 19, 22 and 25 */ } else { b43_shm_write32(dev, B43_SHM_SHARED, B43_SHM_SH_PSM + (index * 6) + 0, addrtmp[0]); b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PSM + (index * 6) + 4, addrtmp[1]); } } } 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 per_sta_keys_start = 8; if (b43_new_kidx_api(dev)) per_sta_keys_start = 4; B43_WARN_ON(index >= dev->max_nr_keys); B43_WARN_ON(key_len > B43_SEC_KEYSIZE); if (index >= per_sta_keys_start) keymac_write(dev, index, NULL); /* First zero out mac. */ if (key) memcpy(buf, key, key_len); key_write(dev, index, algorithm, buf); if (index >= per_sta_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 sta_keys_start; if (key_len > B43_SEC_KEYSIZE) return -EINVAL; for (i = 0; i < dev->max_nr_keys; 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)) sta_keys_start = 4; else sta_keys_start = 8; for (i = sta_keys_start; i < dev->max_nr_keys; i++) { 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 >= dev->max_nr_keys))) 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; for (i = 0; i < dev->max_nr_keys; i++) b43_key_clear(dev, i); } static void b43_dump_keymemory(struct b43_wldev *dev) { unsigned int i, index, offset; DECLARE_MAC_BUF(macbuf); 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)); for (index = 0; index < dev->max_nr_keys; 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 >= 4) { rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA, ((index - 4) * 2) + 0); rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA, ((index - 4) * 2) + 1); *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0); *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1); printk(" MAC: %s", print_mac(macbuf, 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 = 1; } else if (ps_flags & B43_PS_DISABLED) { hwps = 0; } 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 = 1; } else if (ps_flags & B43_PS_ASLEEP) { awake = 0; } 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 = 0; awake = 1; 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->id.revision >= 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); } } } void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags) { u32 tmslow; u32 macctl; flags |= B43_TMSLOW_PHYCLKEN; flags |= B43_TMSLOW_PHYRESET; ssb_device_enable(dev->dev, flags); msleep(2); /* Wait for the PLL to turn on. */ /* Now take the PHY out of Reset again */ tmslow = ssb_read32(dev->dev, SSB_TMSLOW); tmslow |= SSB_TMSLOW_FGC; tmslow &= ~B43_TMSLOW_PHYRESET; ssb_write32(dev->dev, SSB_TMSLOW, tmslow); ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ msleep(1); tmslow &= ~SSB_TMSLOW_FGC; ssb_write32(dev->dev, SSB_TMSLOW, tmslow); ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ msleep(1); /* 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 (flags & B43_TMSLOW_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->id.revision < 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, 0x08A); val <<= 16; val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088); return val; } static void b43_jssi_write(struct b43_wldev *dev, u32 jssi) { b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF)); b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (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 = 1; 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 = 0; 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 = 1; } 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 = 0; } } 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_AUTO: 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 = 0; unsigned int rate; u16 ctl; int antenna; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon); bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data); len = min((size_t) dev->wl->current_beacon->len, 0x200 - sizeof(struct b43_plcp_hdr6)); rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value; 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 = 1; 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); } static void b43_write_probe_resp_plcp(struct b43_wldev *dev, u16 shm_offset, u16 size, struct ieee80211_rate *rate) { struct b43_plcp_hdr4 plcp; u32 tmp; __le16 dur; plcp.data = 0; b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value); dur = ieee80211_generic_frame_duration(dev->wl->hw, dev->wl->vif, size, rate); /* Write PLCP in two parts and timing for packet transfer */ tmp = le32_to_cpu(plcp.data); b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF); b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16); b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur)); } /* Instead of using custom probe response template, this function * just patches custom beacon template by: * 1) Changing packet type * 2) Patching duration field * 3) Stripping TIM */ static const u8 *b43_generate_probe_resp(struct b43_wldev *dev, u16 *dest_size, struct ieee80211_rate *rate) { const u8 *src_data; u8 *dest_data; u16 src_size, elem_size, src_pos, dest_pos; __le16 dur; struct ieee80211_hdr *hdr; size_t ie_start; src_size = dev->wl->current_beacon->len; src_data = (const u8 *)dev->wl->current_beacon->data; /* Get the start offset of the variable IEs in the packet. */ ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable)); if (B43_WARN_ON(src_size < ie_start)) return NULL; dest_data = kmalloc(src_size, GFP_ATOMIC); if (unlikely(!dest_data)) return NULL; /* Copy the static data and all Information Elements, except the TIM. */ memcpy(dest_data, src_data, ie_start); src_pos = ie_start; dest_pos = ie_start; for ( ; src_pos < src_size - 2; src_pos += elem_size) { elem_size = src_data[src_pos + 1] + 2; if (src_data[src_pos] == 5) { /* This is the TIM. */ continue; } memcpy(dest_data + dest_pos, src_data + src_pos, elem_size); dest_pos += elem_size; } *dest_size = dest_pos; hdr = (struct ieee80211_hdr *)dest_data; /* Set the frame control. */ hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP); dur = ieee80211_generic_frame_duration(dev->wl->hw, dev->wl->vif, *dest_size, rate); hdr->duration_id = dur; return dest_data; } static void b43_write_probe_resp_template(struct b43_wldev *dev, u16 ram_offset, u16 shm_size_offset, struct ieee80211_rate *rate) { const u8 *probe_resp_data; u16 size; size = dev->wl->current_beacon->len; probe_resp_data = b43_generate_probe_resp(dev, &size, rate); if (unlikely(!probe_resp_data)) return; /* Looks like PLCP headers plus packet timings are stored for * all possible basic rates */ b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]); b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]); b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]); b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]); size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6)); b43_write_template_common(dev, probe_resp_data, size, ram_offset, shm_size_offset, rate->hw_value); kfree(probe_resp_data); } 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, 0x68, 0x18); /* FIXME: Probe resp upload doesn't really belong here, * but we don't use that feature anyway. */ b43_write_probe_resp_template(dev, 0x268, 0x4A, &__b43_ratetable[3]); wl->beacon0_uploaded = 1; } 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, 0x468, 0x1A); wl->beacon1_uploaded = 1; } 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)) 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 = 0; 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_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))) { spin_lock_irq(&wl->irq_lock); /* update beacon right away or defer to irq */ handle_irq_beacon(dev); /* The handler might have updated the IRQ mask. */ b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask); mmiowb(); spin_unlock_irq(&wl->irq_lock); } mutex_unlock(&wl->mutex); } /* Asynchronously update the packet templates in template RAM. * Locking: Requires wl->irq_lock to be locked. */ static void b43_update_templates(struct b43_wl *wl) { struct sk_buff *beacon; /* This is the top half of the ansynchronous 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; if (wl->current_beacon) dev_kfree_skb_any(wl->current_beacon); wl->current_beacon = beacon; wl->beacon0_uploaded = 0; wl->beacon1_uploaded = 0; queue_work(wl->hw->workqueue, &wl->beacon_update_trigger); } static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int) { b43_time_lock(dev); if (dev->dev->id.revision >= 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); } /* Interrupt handler bottom-half */ static void b43_interrupt_tasklet(struct b43_wldev *dev) { u32 reason; u32 dma_reason[ARRAY_SIZE(dev->dma_reason)]; u32 merged_dma_reason = 0; int i; unsigned long flags; spin_lock_irqsave(&dev->wl->irq_lock, flags); B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED); 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 | B43_DMAIRQ_NONFATALMASK))) { if (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]); b43_controller_restart(dev, "DMA error"); mmiowb(); spin_unlock_irqrestore(&dev->wl->irq_lock, flags); return; } if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) { b43err(dev->wl, "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]); } } 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_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); b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask); mmiowb(); spin_unlock_irqrestore(&dev->wl->irq_lock, flags); } static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason) { 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]); */ } /* Interrupt handler top-half */ static irqreturn_t b43_interrupt_handler(int irq, void *dev_id) { irqreturn_t ret = IRQ_NONE; struct b43_wldev *dev = dev_id; u32 reason; B43_WARN_ON(!dev); spin_lock(&dev->wl->irq_lock); if (unlikely(b43_status(dev) < B43_STAT_STARTED)) { /* This can only happen on shared IRQ lines. */ goto out; } reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); if (reason == 0xffffffff) /* shared IRQ */ goto out; ret = IRQ_HANDLED; reason &= dev->irq_mask; if (!reason) goto out; dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON) & 0x0001DC00; 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; */ b43_interrupt_ack(dev, reason); /* disable all IRQs. They are enabled again in the bottom half. */ b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0); /* save the reason code and call our bottom half. */ dev->irq_reason = reason; tasklet_schedule(&dev->isr_tasklet); out: mmiowb(); spin_unlock(&dev->wl->irq_lock); return ret; } 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) { 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); } int b43_do_request_fw(struct b43_request_fw_context *ctx, const char *name, struct b43_firmware_file *fw) { const struct firmware *blob; 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; } err = request_firmware(&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; } if (blob->size < sizeof(struct b43_fw_header)) goto err_format; hdr = (struct b43_fw_header *)(blob->data); switch (hdr->type) { case B43_FW_TYPE_UCODE: case B43_FW_TYPE_PCM: size = be32_to_cpu(hdr->size); if (size != 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 = 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(blob); return -EPROTO; } 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; const u8 rev = ctx->dev->dev->id.revision; const char *filename; u32 tmshigh; int err; /* Get microcode */ tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); if ((rev >= 5) && (rev <= 10)) filename = "ucode5"; else if ((rev >= 11) && (rev <= 12)) filename = "ucode11"; else if (rev >= 13) filename = "ucode13"; else goto err_no_ucode; err = b43_do_request_fw(ctx, filename, &fw->ucode); 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 = 0; err = b43_do_request_fw(ctx, filename, &fw->pcm); 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 = 1; } else if (err) goto err_load; /* Get initvals */ switch (dev->phy.type) { case B43_PHYTYPE_A: if ((rev >= 5) && (rev <= 10)) { if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY) filename = "a0g1initvals5"; else filename = "a0g0initvals5"; } else goto err_no_initvals; break; case B43_PHYTYPE_G: if ((rev >= 5) && (rev <= 10)) filename = "b0g0initvals5"; else if (rev >= 13) filename = "b0g0initvals13"; else goto err_no_initvals; break; case B43_PHYTYPE_N: if ((rev >= 11) && (rev <= 12)) filename = "n0initvals11"; else goto err_no_initvals; break; default: goto err_no_initvals; } err = b43_do_request_fw(ctx, filename, &fw->initvals); if (err) goto err_load; /* Get bandswitch initvals */ switch (dev->phy.type) { case B43_PHYTYPE_A: if ((rev >= 5) && (rev <= 10)) { if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY) filename = "a0g1bsinitvals5"; else filename = "a0g0bsinitvals5"; } else if (rev >= 11) filename = NULL; else goto err_no_initvals; break; case B43_PHYTYPE_G: if ((rev >= 5) && (rev <= 10)) filename = "b0g0bsinitvals5"; else if (rev >= 11) filename = NULL; else goto err_no_initvals; break; case B43_PHYTYPE_N: if ((rev >= 11) && (rev <= 12)) filename = "n0bsinitvals11"; else goto err_no_initvals; break; default: goto err_no_initvals; } err = b43_do_request_fw(ctx, filename, &fw->initvals_band); if (err) goto err_load; 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_request_firmware(struct b43_wldev *dev) { struct b43_request_fw_context *ctx; unsigned int i; int err; const char *errmsg; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; ctx->dev = dev; ctx->req_type = B43_FWTYPE_PROPRIETARY; err = b43_try_request_fw(ctx); if (!err) goto out; /* Successfully loaded it. */ err = ctx->fatal_failure; if (err) goto out; ctx->req_type = B43_FWTYPE_OPENSOURCE; err = b43_try_request_fw(ctx); if (!err) goto out; /* Successfully loaded it. */ err = ctx->fatal_failure; if (err) 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, errmsg); } b43_print_fw_helptext(dev->wl, 1); err = -ENOENT; out: kfree(ctx); return err; } static int b43_upload_microcode(struct b43_wldev *dev) { 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 */ macctl = b43_read32(dev, B43_MMIO_MACCTL); macctl &= ~B43_MACCTL_PSM_JMP0; macctl |= B43_MACCTL_PSM_RUN; b43_write32(dev, B43_MMIO_MACCTL, macctl); /* 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_interruptible(50); if (signal_pending(current)) { err = -EINTR; goto error; } } 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; dev->fw.opensource = (fwdate == 0xFFFF); /* Default to use-all-queues. */ dev->wl->hw->queues = dev->wl->mac80211_initially_registered_queues; dev->qos_enabled = !!modparam_qos; /* Default to firmware/hardware crypto acceleration. */ dev->hwcrypto_enabled = 1; 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 = 0; } if (!(fwcapa & B43_FWCAPA_QOS)) { b43info(dev->wl, "QoS not supported by firmware\n"); /* Disable QoS. Tweak hw->queues to 1. It will be restored before * ieee80211_unregister to make sure the networking core can * properly free possible resources. */ dev->wl->hw->queues = 1; dev->qos_enabled = 0; } } 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); } } if (b43_is_old_txhdr_format(dev)) { /* 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: macctl = b43_read32(dev, B43_MMIO_MACCTL); macctl &= ~B43_MACCTL_PSM_RUN; macctl |= B43_MACCTL_PSM_JMP0; b43_write32(dev, B43_MMIO_MACCTL, macctl); 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; int err; 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); err = b43_write_initvals(dev, ivals, count, fw->initvals.data->size - hdr_len); if (err) goto out; if (fw->initvals_band.data) { 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); err = b43_write_initvals(dev, ivals, count, fw->initvals_band.data->size - hdr_len); if (err) goto out; } out: return err; } /* Initialize the GPIOs * http://bcm-specs.sipsolutions.net/GPIO */ static int b43_gpio_init(struct b43_wldev *dev) { struct ssb_bus *bus = dev->dev->bus; struct ssb_device *gpiodev, *pcidev = NULL; u32 mask, set; b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) & ~B43_MACCTL_GPOUTSMSK); b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK) | 0x000F); mask = 0x0000001F; set = 0x0000000F; if (dev->dev->bus->chip_id == 0x4301) { mask |= 0x0060; set |= 0x0060; } if (0 /* FIXME: conditional unknown */ ) { b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK) | 0x0100); mask |= 0x0180; set |= 0x0180; } if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) { b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK) | 0x0200); mask |= 0x0200; set |= 0x0200; } if (dev->dev->id.revision >= 2) mask |= 0x0010; /* FIXME: This is redundant. */ #ifdef CONFIG_SSB_DRIVER_PCICORE pcidev = bus->pcicore.dev; #endif gpiodev = bus->chipco.dev ? : pcidev; if (!gpiodev) return 0; ssb_write32(gpiodev, B43_GPIO_CONTROL, (ssb_read32(gpiodev, B43_GPIO_CONTROL) & mask) | set); return 0; } /* Turn off all GPIO stuff. Call this on module unload, for example. */ static void b43_gpio_cleanup(struct b43_wldev *dev) { struct ssb_bus *bus = dev->dev->bus; struct ssb_device *gpiodev, *pcidev = NULL; #ifdef CONFIG_SSB_DRIVER_PCICORE pcidev = bus->pcicore.dev; #endif gpiodev = bus->chipco.dev ? : pcidev; if (!gpiodev) return; ssb_write32(gpiodev, B43_GPIO_CONTROL, 0); } /* 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_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) | 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_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) & ~B43_MACCTL_ENABLED); /* 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++; } 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_PROMISC_IN_BSS) ctl |= B43_MACCTL_PROMISC; 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->id.revision <= 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->bus->chip_id == 0x4306 && dev->dev->bus->chip_rev == 3) cfp_pretbtt = 100; else cfp_pretbtt = 50; } b43_write16(dev, 0x612, cfp_pretbtt); } 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_A: case B43_PHYTYPE_G: case B43_PHYTYPE_N: b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 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); if (dev->phy.type == B43_PHYTYPE_A) break; /* 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 value32, 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_request_firmware(dev); if (err) goto out; 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; /* 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->id.revision < 5) b43_write32(dev, 0x010C, 0x01000000); b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) & ~B43_MACCTL_INFRA); b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) | 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, 0x0074, 0x0000); /* Initially set the wireless operation mode. */ b43_adjust_opmode(dev); if (dev->dev->id.revision < 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, 0x0001DC00); 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); value32 = ssb_read32(dev->dev, SSB_TMSLOW); value32 |= 0x00100000; ssb_write32(dev->dev, SSB_TMSLOW, value32); b43_write16(dev, B43_MMIO_POWERUP_DELAY, dev->dev->bus->chipco.fast_pwrup_delay); 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(); } 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 aquired 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); queue_delayed_work(wl->hw->workqueue, &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); queue_delayed_work(dev->wl->hw->workqueue, work, 0); } /* Check if communication with the device works correctly. */ static int b43_validate_chipaccess(struct b43_wldev *dev) { u32 v, backup; backup = b43_shm_read32(dev, B43_SHM_SHARED, 0); /* 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; b43_shm_write32(dev, B43_SHM_SHARED, 0, backup); if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 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->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20; B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key)); 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; if (dev->dev->id.revision >= 5) { /* Number of RCMTA address slots */ b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8); } 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; unsigned long flags; /* Don't take wl->mutex here, as it could deadlock with * hwrng internal locking. It's not needed to take * wl->mutex here, anyway. */ spin_lock_irqsave(&wl->irq_lock, flags); *data = b43_read16(wl->current_dev, B43_MMIO_RNG); spin_unlock_irqrestore(&wl->irq_lock, flags); return (sizeof(u16)); } #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 = 1; err = hwrng_register(&wl->rng); if (err) { wl->rng_initialized = 0; b43err(wl, "Failed to register the random " "number generator (%d)\n", err); } #endif /* CONFIG_B43_HWRNG */ return err; } static int b43_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; unsigned long flags; int err; if (unlikely(skb->len < 2 + 2 + 6)) { /* Too short, this can't be a valid frame. */ goto drop_packet; } B43_WARN_ON(skb_shinfo(skb)->nr_frags); if (unlikely(!dev)) goto drop_packet; /* Transmissions on seperate queues can run concurrently. */ read_lock_irqsave(&wl->tx_lock, flags); err = -ENODEV; if (likely(b43_status(dev) >= B43_STAT_STARTED)) { if (b43_using_pio_transfers(dev)) err = b43_pio_tx(dev, skb); else err = b43_dma_tx(dev, skb); } read_unlock_irqrestore(&wl->tx_lock, flags); if (unlikely(err)) goto drop_packet; return NETDEV_TX_OK; drop_packet: /* We can not transmit this packet. Drop it. */ dev_kfree_skb_any(skb); return NETDEV_TX_OK; } /* Locking: wl->irq_lock */ 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; 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; 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) { /* 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); } static int b43_op_conf_tx(struct ieee80211_hw *hw, 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_tx_stats(struct ieee80211_hw *hw, struct ieee80211_tx_queue_stats *stats) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; unsigned long flags; int err = -ENODEV; if (!dev) goto out; spin_lock_irqsave(&wl->irq_lock, flags); if (likely(b43_status(dev) >= B43_STAT_STARTED)) { if (b43_using_pio_transfers(dev)) b43_pio_get_tx_stats(dev, stats); else b43_dma_get_tx_stats(dev, stats); err = 0; } spin_unlock_irqrestore(&wl->irq_lock, flags); out: 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); unsigned long flags; spin_lock_irqsave(&wl->irq_lock, flags); memcpy(stats, &wl->ieee_stats, sizeof(*stats)); spin_unlock_irqrestore(&wl->irq_lock, flags); return 0; } static u64 b43_op_get_tsf(struct ieee80211_hw *hw) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; u64 tsf; mutex_lock(&wl->mutex); spin_lock_irq(&wl->irq_lock); dev = wl->current_dev; if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) b43_tsf_read(dev, &tsf); else tsf = 0; spin_unlock_irq(&wl->irq_lock); mutex_unlock(&wl->mutex); return tsf; } static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; mutex_lock(&wl->mutex); spin_lock_irq(&wl->irq_lock); dev = wl->current_dev; if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) b43_tsf_write(dev, tsf); spin_unlock_irq(&wl->irq_lock); mutex_unlock(&wl->mutex); } static void b43_put_phy_into_reset(struct b43_wldev *dev) { struct ssb_device *sdev = dev->dev; u32 tmslow; tmslow = ssb_read32(sdev, SSB_TMSLOW); tmslow &= ~B43_TMSLOW_GMODE; tmslow |= B43_TMSLOW_PHYRESET; tmslow |= SSB_TMSLOW_FGC; ssb_write32(sdev, SSB_TMSLOW, tmslow); msleep(1); tmslow = ssb_read32(sdev, SSB_TMSLOW); tmslow &= ~SSB_TMSLOW_FGC; tmslow |= B43_TMSLOW_PHYRESET; ssb_write32(sdev, SSB_TMSLOW, tmslow); msleep(1); } static const char *band_to_string(enum ieee80211_band band) { switch (band) { case IEEE80211_BAND_5GHZ: return "5"; case IEEE80211_BAND_2GHZ: return "2.4"; default: break; } B43_WARN_ON(1); return ""; } /* Expects wl->mutex locked */ static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan) { struct b43_wldev *up_dev = NULL; struct b43_wldev *down_dev; struct b43_wldev *d; int err; bool uninitialized_var(gmode); int prev_status; /* Find a device and PHY which supports the band. */ list_for_each_entry(d, &wl->devlist, list) { switch (chan->band) { case IEEE80211_BAND_5GHZ: if (d->phy.supports_5ghz) { up_dev = d; gmode = 0; } break; case IEEE80211_BAND_2GHZ: if (d->phy.supports_2ghz) { up_dev = d; gmode = 1; } break; default: B43_WARN_ON(1); return -EINVAL; } if (up_dev) break; } if (!up_dev) { b43err(wl, "Could not find a device for %s-GHz band operation\n", band_to_string(chan->band)); return -ENODEV; } if ((up_dev == wl->current_dev) && (!!wl->current_dev->phy.gmode == !!gmode)) { /* This device is already running. */ return 0; } b43dbg(wl, "Switching to %s-GHz band\n", band_to_string(chan->band)); down_dev = wl->current_dev; prev_status = b43_status(down_dev); /* Shutdown the currently running core. */ if (prev_status >= B43_STAT_STARTED) b43_wireless_core_stop(down_dev); if (prev_status >= B43_STAT_INITIALIZED) b43_wireless_core_exit(down_dev); if (down_dev != up_dev) { /* We switch to a different core, so we put PHY into * RESET on the old core. */ b43_put_phy_into_reset(down_dev); } /* Now start the new core. */ up_dev->phy.gmode = gmode; if (prev_status >= B43_STAT_INITIALIZED) { err = b43_wireless_core_init(up_dev); if (err) { b43err(wl, "Fatal: Could not initialize device for " "selected %s-GHz band\n", band_to_string(chan->band)); goto init_failure; } } if (prev_status >= B43_STAT_STARTED) { err = b43_wireless_core_start(up_dev); if (err) { b43err(wl, "Fatal: Coult not start device for " "selected %s-GHz band\n", band_to_string(chan->band)); b43_wireless_core_exit(up_dev); goto init_failure; } } B43_WARN_ON(b43_status(up_dev) != prev_status); wl->current_dev = up_dev; return 0; init_failure: /* Whoops, failed to init the new core. No core is operating now. */ wl->current_dev = NULL; return err; } /* 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; struct b43_phy *phy; struct ieee80211_conf *conf = &hw->conf; unsigned long flags; int antenna; int err = 0; mutex_lock(&wl->mutex); /* Switch the band (if necessary). This might change the active core. */ err = b43_switch_band(wl, conf->channel); if (err) goto out_unlock_mutex; dev = wl->current_dev; phy = &dev->phy; b43_mac_suspend(dev); 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; /* Switch to the requested channel. * The firmware takes care of races with the TX handler. */ if (conf->channel->hw_value != phy->channel) b43_switch_channel(dev, conf->channel->hw_value); dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP); /* Adjust the desired TX power level. */ if (conf->power_level != 0) { spin_lock_irqsave(&wl->irq_lock, flags); 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); } spin_unlock_irqrestore(&wl->irq_lock, flags); } /* 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); out_unlock_mutex: 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; unsigned long flags; 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); spin_lock_irqsave(&wl->irq_lock, flags); if (changed & BSS_CHANGED_BSSID) { if (conf->bssid) memcpy(wl->bssid, conf->bssid, ETH_ALEN); else memset(wl->bssid, 0, ETH_ALEN); } 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); } spin_unlock_irqrestore(&wl->irq_lock, flags); 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))) 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 */ mutex_lock(&wl->mutex); spin_lock_irq(&wl->irq_lock); write_lock(&wl->tx_lock); /* Why do we need all this locking here? * mutex -> Every config operation must take it. * irq_lock -> We modify the dev->key array, which is accessed * in the IRQ handlers. * tx_lock -> We modify the dev->key array, which is accessed * in the TX handler. */ 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->alg) { case ALG_WEP: if (key->keylen == WLAN_KEY_LEN_WEP40) algorithm = B43_SEC_ALGO_WEP40; else algorithm = B43_SEC_ALGO_WEP104; break; case ALG_TKIP: algorithm = B43_SEC_ALGO_TKIP; break; case ALG_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) { /* FIXME: No TKIP hardware encryption for now. */ 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; 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); } write_unlock(&wl->tx_lock); spin_unlock_irq(&wl->irq_lock); mutex_unlock(&wl->mutex); return err; } static void b43_op_configure_filter(struct ieee80211_hw *hw, unsigned int changed, unsigned int *fflags, int mc_count, struct dev_addr_list *mc_list) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; unsigned long flags; if (!dev) { *fflags = 0; return; } spin_lock_irqsave(&wl->irq_lock, flags); *fflags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC; changed &= FIF_PROMISC_IN_BSS | 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); spin_unlock_irqrestore(&wl->irq_lock, flags); } /* Locking: wl->mutex */ static void b43_wireless_core_stop(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; unsigned long flags; if (b43_status(dev) < B43_STAT_STARTED) return; /* Disable and sync interrupts. We must do this before than * setting the status to INITIALIZED, as the interrupt handler * won't care about IRQs then. */ spin_lock_irqsave(&wl->irq_lock, flags); b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0); b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */ spin_unlock_irqrestore(&wl->irq_lock, flags); b43_synchronize_irq(dev); write_lock_irqsave(&wl->tx_lock, flags); b43_set_status(dev, B43_STAT_INITIALIZED); write_unlock_irqrestore(&wl->tx_lock, flags); b43_pio_stop(dev); mutex_unlock(&wl->mutex); /* Must unlock as it would otherwise deadlock. No races here. * Cancel the possibly running self-rearming periodic work. */ cancel_delayed_work_sync(&dev->periodic_work); mutex_lock(&wl->mutex); b43_mac_suspend(dev); free_irq(dev->dev->irq, dev); b43dbg(wl, "Wireless interface stopped\n"); } /* 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); err = request_irq(dev->dev->irq, b43_interrupt_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. */ 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 maintainance work */ b43_periodic_tasks_setup(dev); b43dbg(dev->wl, "Wireless interface started\n"); out: return err; } /* Get PHY and RADIO versioning numbers */ static int b43_phy_versioning(struct b43_wldev *dev) { struct b43_phy *phy = &dev->phy; u32 tmp; u8 analog_type; u8 phy_type; u8 phy_rev; u16 radio_manuf; u16 radio_ver; u16 radio_rev; 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); switch (phy_type) { case B43_PHYTYPE_A: if (phy_rev >= 4) unsupported = 1; break; case B43_PHYTYPE_B: if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6 && phy_rev != 7) unsupported = 1; break; case B43_PHYTYPE_G: if (phy_rev > 9) unsupported = 1; break; #ifdef CONFIG_B43_NPHY case B43_PHYTYPE_N: if (phy_rev > 4) unsupported = 1; break; #endif #ifdef CONFIG_B43_PHY_LP case B43_PHYTYPE_LP: if (phy_rev > 1) unsupported = 1; break; #endif default: unsupported = 1; }; if (unsupported) { b43err(dev->wl, "FOUND UNSUPPORTED PHY " "(Analog %u, Type %u, Revision %u)\n", analog_type, phy_type, phy_rev); return -EOPNOTSUPP; } b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n", analog_type, phy_type, phy_rev); /* Get RADIO versioning */ if (dev->dev->bus->chip_id == 0x4317) { if (dev->dev->bus->chip_rev == 0) tmp = 0x3205017F; else if (dev->dev->bus->chip_rev == 1) tmp = 0x4205017F; else tmp = 0x5205017F; } else { b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW); b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16; } radio_manuf = (tmp & 0x00000FFF); radio_ver = (tmp & 0x0FFFF000) >> 12; radio_rev = (tmp & 0xF0000000) >> 28; if (radio_manuf != 0x17F /* Broadcom */) unsupported = 1; switch (phy_type) { case B43_PHYTYPE_A: if (radio_ver != 0x2060) unsupported = 1; if (radio_rev != 1) unsupported = 1; if (radio_manuf != 0x17F) unsupported = 1; break; case B43_PHYTYPE_B: if ((radio_ver & 0xFFF0) != 0x2050) unsupported = 1; break; case B43_PHYTYPE_G: if (radio_ver != 0x2050) unsupported = 1; break; case B43_PHYTYPE_N: if (radio_ver != 0x2055 && radio_ver != 0x2056) unsupported = 1; break; case B43_PHYTYPE_LP: if (radio_ver != 0x2062) unsupported = 1; break; default: B43_WARN_ON(1); } if (unsupported) { b43err(dev->wl, "FOUND UNSUPPORTED RADIO " "(Manuf 0x%X, Version 0x%X, Revision %u)\n", radio_manuf, radio_ver, radio_rev); return -EOPNOTSUPP; } b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n", radio_manuf, radio_ver, radio_rev); phy->radio_manuf = radio_manuf; phy->radio_ver = radio_ver; 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 = 0; phy->radio_locked = 0; #endif } static void setup_struct_wldev_for_init(struct b43_wldev *dev) { dev->dfq_valid = 0; /* 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 = 1; /* 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) { #ifdef CONFIG_SSB_DRIVER_PCICORE struct ssb_bus *bus = dev->dev->bus; u32 tmp; if (bus->pcicore.dev && bus->pcicore.dev->id.coreid == SSB_DEV_PCI && bus->pcicore.dev->id.revision <= 5) { /* IMCFGLO timeouts workaround. */ tmp = ssb_read32(dev->dev, SSB_IMCFGLO); tmp &= ~SSB_IMCFGLO_REQTO; tmp &= ~SSB_IMCFGLO_SERTO; switch (bus->bustype) { case SSB_BUSTYPE_PCI: case SSB_BUSTYPE_PCMCIA: tmp |= 0x32; break; case SSB_BUSTYPE_SSB: tmp |= 0x53; break; } ssb_write32(dev->dev, SSB_IMCFGLO, tmp); } #endif /* CONFIG_SSB_DRIVER_PCICORE */ } static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle) { u16 pu_delay; /* The time value is in microseconds. */ if (dev->phy.type == B43_PHYTYPE_A) pu_delay = 3700; else 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 { if (dev->phy.type == B43_PHYTYPE_A) pretbtt = 120; 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) { u32 macctl; B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED); if (b43_status(dev) != B43_STAT_INITIALIZED) return; b43_set_status(dev, B43_STAT_UNINIT); /* Stop the microcode PSM. */ macctl = b43_read32(dev, B43_MMIO_MACCTL); macctl &= ~B43_MACCTL_PSM_RUN; macctl |= B43_MACCTL_PSM_JMP0; b43_write32(dev, B43_MMIO_MACCTL, macctl); if (!dev->suspend_in_progress) { b43_leds_exit(dev); b43_rng_exit(dev->wl); } 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; } ssb_device_disable(dev->dev, 0); ssb_bus_may_powerdown(dev->dev->bus); } /* Initialize a wireless core */ static int b43_wireless_core_init(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; struct ssb_bus *bus = dev->dev->bus; struct ssb_sprom *sprom = &bus->sprom; struct b43_phy *phy = &dev->phy; int err; u64 hf; u32 tmp; B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT); err = ssb_bus_powerup(bus, 0); if (err) goto out; if (!ssb_device_is_enabled(dev->dev)) { tmp = phy->gmode ? B43_TMSLOW_GMODE : 0; b43_wireless_core_reset(dev, tmp); } /* Reset all data structures. */ setup_struct_wldev_for_init(dev); phy->ops->prepare_structs(dev); /* Enable IRQ routing to this device. */ ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev); 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->id.revision); 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. */ #ifdef CONFIG_SSB_DRIVER_PCICORE if ((bus->bustype == SSB_BUSTYPE_PCI) && (bus->pcicore.dev->id.revision <= 10)) hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */ #endif hf &= ~B43_HF_SKCFPUP; b43_hf_write(dev, hf); 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); if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) { dev->__using_pio_transfers = 1; err = b43_pio_init(dev); } else { dev->__using_pio_transfers = 0; 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); ssb_bus_powerup(bus, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)); b43_upload_card_macaddress(dev); b43_security_init(dev); if (!dev->suspend_in_progress) b43_rng_init(wl); b43_set_status(dev, B43_STAT_INITIALIZED); if (!dev->suspend_in_progress) b43_leds_init(dev); out: return err; err_chip_exit: b43_chip_exit(dev); err_busdown: ssb_bus_may_powerdown(bus); B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT); return err; } static int b43_op_add_interface(struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev; unsigned long flags; int err = -EOPNOTSUPP; /* TODO: allow WDS/AP devices to coexist */ if (conf->type != NL80211_IFTYPE_AP && conf->type != NL80211_IFTYPE_MESH_POINT && conf->type != NL80211_IFTYPE_STATION && conf->type != NL80211_IFTYPE_WDS && conf->type != NL80211_IFTYPE_ADHOC) return -EOPNOTSUPP; mutex_lock(&wl->mutex); if (wl->operating) goto out_mutex_unlock; b43dbg(wl, "Adding Interface type %d\n", conf->type); dev = wl->current_dev; wl->operating = 1; wl->vif = conf->vif; wl->if_type = conf->type; memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN); spin_lock_irqsave(&wl->irq_lock, flags); b43_adjust_opmode(dev); b43_set_pretbtt(dev); b43_set_synth_pu_delay(dev, 0); b43_upload_card_macaddress(dev); spin_unlock_irqrestore(&wl->irq_lock, flags); err = 0; out_mutex_unlock: mutex_unlock(&wl->mutex); return err; } static void b43_op_remove_interface(struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; unsigned long flags; b43dbg(wl, "Removing Interface type %d\n", conf->type); mutex_lock(&wl->mutex); B43_WARN_ON(!wl->operating); B43_WARN_ON(wl->vif != conf->vif); wl->vif = NULL; wl->operating = 0; spin_lock_irqsave(&wl->irq_lock, flags); b43_adjust_opmode(dev); memset(wl->mac_addr, 0, ETH_ALEN); b43_upload_card_macaddress(dev); spin_unlock_irqrestore(&wl->irq_lock, flags); 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. */ memset(wl->bssid, 0, ETH_ALEN); memset(wl->mac_addr, 0, ETH_ALEN); wl->filter_flags = 0; wl->radiotap_enabled = 0; b43_qos_clear(wl); wl->beacon0_uploaded = 0; wl->beacon1_uploaded = 0; wl->beacon_templates_virgin = 1; wl->radio_enabled = 1; 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); 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)); mutex_lock(&wl->mutex); if (b43_status(dev) >= B43_STAT_STARTED) b43_wireless_core_stop(dev); b43_wireless_core_exit(dev); wl->radio_enabled = 0; mutex_unlock(&wl->mutex); 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); unsigned long flags; spin_lock_irqsave(&wl->irq_lock, flags); b43_update_templates(wl); spin_unlock_irqrestore(&wl->irq_lock, flags); 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 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 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 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, .get_stats = b43_op_get_stats, .get_tx_stats = b43_op_get_tx_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, .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) b43_wireless_core_stop(dev); 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"); else 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; if (have_2ghz_phy) hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz; if (dev->phy.type == B43_PHYTYPE_N) { if (have_5ghz_phy) hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy; } else { if (have_5ghz_phy) hw->wiphy->bands[IEEE80211_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 int b43_wireless_core_attach(struct b43_wldev *dev) { struct b43_wl *wl = dev->wl; struct ssb_bus *bus = dev->dev->bus; struct pci_dev *pdev = bus->host_pci; int err; bool have_2ghz_phy = 0, have_5ghz_phy = 0; u32 tmp; /* 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 = ssb_bus_powerup(bus, 0); if (err) { b43err(wl, "Bus powerup failed\n"); goto out; } /* Get the PHY type. */ if (dev->dev->id.revision >= 5) { u32 tmshigh; tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY); have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY); } else B43_WARN_ON(1); dev->phy.gmode = have_2ghz_phy; dev->phy.radio_on = 1; tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0; b43_wireless_core_reset(dev, tmp); err = b43_phy_versioning(dev); if (err) goto err_powerdown; /* Check if this device supports multiband. */ if (!pdev || (pdev->device != 0x4312 && pdev->device != 0x4319 && pdev->device != 0x4324)) { /* No multiband support. */ have_2ghz_phy = 0; have_5ghz_phy = 0; switch (dev->phy.type) { case B43_PHYTYPE_A: have_5ghz_phy = 1; break; case B43_PHYTYPE_G: case B43_PHYTYPE_N: case B43_PHYTYPE_LP: have_2ghz_phy = 1; break; default: B43_WARN_ON(1); } } if (dev->phy.type == B43_PHYTYPE_A) { /* FIXME */ b43err(wl, "IEEE 802.11a devices are unsupported\n"); err = -EOPNOTSUPP; goto err_powerdown; } if (1 /* disable A-PHY */) { /* FIXME: For now we disable the A-PHY on multi-PHY devices. */ if (dev->phy.type != B43_PHYTYPE_N) { have_2ghz_phy = 1; have_5ghz_phy = 0; } } err = b43_phy_allocate(dev); if (err) goto err_powerdown; dev->phy.gmode = have_2ghz_phy; tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0; b43_wireless_core_reset(dev, tmp); 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); ssb_device_disable(dev->dev, 0); ssb_bus_may_powerdown(bus); out: return err; err_phy_free: b43_phy_free(dev); err_powerdown: ssb_bus_may_powerdown(bus); return err; } static void b43_one_core_detach(struct ssb_device *dev) { struct b43_wldev *wldev; struct b43_wl *wl; /* Do not cancel ieee80211-workqueue based work here. * See comment in b43_remove(). */ wldev = ssb_get_drvdata(dev); wl = wldev->wl; b43_debugfs_remove_device(wldev); b43_wireless_core_detach(wldev); list_del(&wldev->list); wl->nr_devs--; ssb_set_drvdata(dev, NULL); kfree(wldev); } static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl) { struct b43_wldev *wldev; struct pci_dev *pdev; int err = -ENOMEM; if (!list_empty(&wl->devlist)) { /* We are not the first core on this chip. */ pdev = dev->bus->host_pci; /* Only special chips support more than one wireless * core, although some of the other chips have more than * one wireless core as well. Check for this and * bail out early. */ if (!pdev || ((pdev->device != 0x4321) && (pdev->device != 0x4313) && (pdev->device != 0x431A))) { b43dbg(wl, "Ignoring unconnected 802.11 core\n"); return -ENODEV; } } wldev = kzalloc(sizeof(*wldev), GFP_KERNEL); if (!wldev) goto out; wldev->dev = dev; wldev->wl = wl; b43_set_status(wldev, B43_STAT_UNINIT); wldev->bad_frames_preempt = modparam_bad_frames_preempt; tasklet_init(&wldev->isr_tasklet, (void (*)(unsigned long))b43_interrupt_tasklet, (unsigned long)wldev); INIT_LIST_HEAD(&wldev->list); err = b43_wireless_core_attach(wldev); if (err) goto err_kfree_wldev; list_add(&wldev->list, &wl->devlist); wl->nr_devs++; ssb_set_drvdata(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) ) 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->boardinfo.rev == 0x74) bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST; if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && bus->boardinfo.type == 0x4E && bus->boardinfo.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 ssb_device *dev, struct b43_wl *wl) { struct ieee80211_hw *hw = wl->hw; ssb_set_devtypedata(dev, NULL); ieee80211_free_hw(hw); } static int b43_wireless_init(struct ssb_device *dev) { struct ssb_sprom *sprom = &dev->bus->sprom; struct ieee80211_hw *hw; struct b43_wl *wl; int err = -ENOMEM; b43_sprom_fixup(dev->bus); hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops); if (!hw) { b43err(NULL, "Could not allocate ieee80211 device\n"); goto out; } wl = hw_to_b43_wl(hw); /* fill hw info */ hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_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->queues = modparam_qos ? 4 : 1; wl->mac80211_initially_registered_queues = hw->queues; 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; spin_lock_init(&wl->irq_lock); rwlock_init(&wl->tx_lock); spin_lock_init(&wl->leds_lock); spin_lock_init(&wl->shm_lock); mutex_init(&wl->mutex); INIT_LIST_HEAD(&wl->devlist); INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work); INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work); ssb_set_devtypedata(dev, wl); b43info(wl, "Broadcom %04X WLAN found (core revision %u)\n", dev->bus->chip_id, dev->id.revision); err = 0; out: return err; } static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id) { struct b43_wl *wl; int err; int first = 0; wl = ssb_get_devtypedata(dev); if (!wl) { /* Probing the first core. Must setup common struct b43_wl */ first = 1; err = b43_wireless_init(dev); if (err) goto out; wl = ssb_get_devtypedata(dev); B43_WARN_ON(!wl); } err = b43_one_core_attach(dev, wl); if (err) goto err_wireless_exit; if (first) { err = ieee80211_register_hw(wl->hw); if (err) goto err_one_core_detach; } out: return err; err_one_core_detach: b43_one_core_detach(dev); err_wireless_exit: if (first) b43_wireless_exit(dev, wl); return err; } static void b43_remove(struct ssb_device *dev) { struct b43_wl *wl = ssb_get_devtypedata(dev); struct b43_wldev *wldev = ssb_get_drvdata(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); B43_WARN_ON(!wl); if (wl->current_dev == wldev) { /* Restore the queues count before unregistering, because firmware detect * might have modified it. Restoring is important, so the networking * stack can properly free resources. */ wl->hw->queues = wl->mac80211_initially_registered_queues; ieee80211_unregister_hw(wl->hw); } b43_one_core_detach(dev); if (list_empty(&wl->devlist)) { /* Last core on the chip unregistered. * We can destroy common struct b43_wl. */ b43_wireless_exit(dev, wl); } } /* 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); queue_work(dev->wl->hw->workqueue, &dev->restart_work); } #ifdef CONFIG_PM static int b43_suspend(struct ssb_device *dev, pm_message_t state) { struct b43_wldev *wldev = ssb_get_drvdata(dev); struct b43_wl *wl = wldev->wl; b43dbg(wl, "Suspending...\n"); mutex_lock(&wl->mutex); wldev->suspend_in_progress = true; wldev->suspend_init_status = b43_status(wldev); if (wldev->suspend_init_status >= B43_STAT_STARTED) b43_wireless_core_stop(wldev); if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) b43_wireless_core_exit(wldev); mutex_unlock(&wl->mutex); b43dbg(wl, "Device suspended.\n"); return 0; } static int b43_resume(struct ssb_device *dev) { struct b43_wldev *wldev = ssb_get_drvdata(dev); struct b43_wl *wl = wldev->wl; int err = 0; b43dbg(wl, "Resuming...\n"); mutex_lock(&wl->mutex); if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) { err = b43_wireless_core_init(wldev); if (err) { b43err(wl, "Resume failed at core init\n"); goto out; } } if (wldev->suspend_init_status >= B43_STAT_STARTED) { err = b43_wireless_core_start(wldev); if (err) { b43_leds_exit(wldev); b43_rng_exit(wldev->wl); b43_wireless_core_exit(wldev); b43err(wl, "Resume failed at core start\n"); goto out; } } b43dbg(wl, "Device resumed.\n"); out: wldev->suspend_in_progress = false; mutex_unlock(&wl->mutex); return err; } #else /* CONFIG_PM */ # define b43_suspend NULL # define b43_resume NULL #endif /* CONFIG_PM */ static struct ssb_driver b43_ssb_driver = { .name = KBUILD_MODNAME, .id_table = b43_ssb_tbl, .probe = b43_probe, .remove = b43_remove, .suspend = b43_suspend, .resume = b43_resume, }; static void b43_print_driverinfo(void) { const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "", *feat_leds = ""; #ifdef CONFIG_B43_PCI_AUTOSELECT feat_pci = "P"; #endif #ifdef CONFIG_B43_PCMCIA feat_pcmcia = "M"; #endif #ifdef CONFIG_B43_NPHY feat_nphy = "N"; #endif #ifdef CONFIG_B43_LEDS feat_leds = "L"; #endif printk(KERN_INFO "Broadcom 43xx driver loaded " "[ Features: %s%s%s%s, Firmware-ID: " B43_SUPPORTED_FIRMWARE_ID " ]\n", feat_pci, feat_pcmcia, feat_nphy, feat_leds); } static int __init b43_init(void) { int err; b43_debugfs_init(); err = b43_pcmcia_init(); if (err) goto err_dfs_exit; err = ssb_driver_register(&b43_ssb_driver); if (err) goto err_pcmcia_exit; b43_print_driverinfo(); return err; err_pcmcia_exit: b43_pcmcia_exit(); err_dfs_exit: b43_debugfs_exit(); return err; } static void __exit b43_exit(void) { ssb_driver_unregister(&b43_ssb_driver); b43_pcmcia_exit(); b43_debugfs_exit(); } module_init(b43_init) module_exit(b43_exit)