diff options
Diffstat (limited to 'package/b43/src/main.c')
| -rw-r--r-- | package/b43/src/main.c | 4809 |
1 files changed, 0 insertions, 4809 deletions
diff --git a/package/b43/src/main.c b/package/b43/src/main.c index cbb317bb34..e69de29bb2 100644 --- a/package/b43/src/main.c +++ b/package/b43/src/main.c @@ -1,4809 +0,0 @@ -/* - - Broadcom B43 wireless driver - - Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> - Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it> - Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de> - Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> - Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> - - 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 <linux/delay.h> -#include <linux/init.h> -#include <linux/moduleparam.h> -#include <linux/if_arp.h> -#include <linux/etherdevice.h> -#include <linux/version.h> -#include <linux/firmware.h> -#include <linux/wireless.h> -#include <linux/workqueue.h> -#include <linux/skbuff.h> -#include <linux/io.h> -#include <linux/dma-mapping.h> -#include <asm/unaligned.h> - -#include "b43.h" -#include "main.h" -#include "debugfs.h" -#include "phy.h" -#include "nphy.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."); - -int b43_modparam_qos = 1; -module_param_named(qos, b43_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)"); - - -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_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_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_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_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); -} - -#if B43_DEBUG -void b43dbg(struct b43_wl *wl, const char *fmt, ...) -{ - va_list args; - - 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); -} -#endif /* DEBUG */ - -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) -{ - struct b43_wl *wl = dev->wl; - unsigned long flags; - u32 ret; - - spin_lock_irqsave(&wl->shm_lock, flags); - 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: - spin_unlock_irqrestore(&wl->shm_lock, flags); - - 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); - 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: - spin_unlock_irqrestore(&wl->shm_lock, flags); - - return ret; -} - -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); - 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); - goto out; - } - offset >>= 2; - } - b43_shm_control_word(dev, routing, offset); - b43_write32(dev, B43_MMIO_SHM_DATA, value); -out: - spin_unlock_irqrestore(&wl->shm_lock, flags); -} - -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); - 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); - goto out; - } - offset >>= 2; - } - b43_shm_control_word(dev, routing, offset); - b43_write16(dev, B43_MMIO_SHM_DATA, value); -out: - 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); -} - -void b43_tsf_read(struct b43_wldev *dev, u64 * tsf) -{ - /* We need to be careful. As we read the TSF from multiple - * registers, we should take care of register overflows. - * In theory, the whole tsf read process should be atomic. - * We try to be atomic here, by restaring the read process, - * if any of the high registers changed (overflew). - */ - if (dev->dev->id.revision >= 3) { - u32 low, high, high2; - - do { - high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH); - low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW); - high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH); - } while (unlikely(high != high2)); - - *tsf = high; - *tsf <<= 32; - *tsf |= low; - } else { - u64 tmp; - u16 v0, v1, v2, v3; - u16 test1, test2, test3; - - do { - v3 = b43_read16(dev, B43_MMIO_TSF_3); - v2 = b43_read16(dev, B43_MMIO_TSF_2); - v1 = b43_read16(dev, B43_MMIO_TSF_1); - v0 = b43_read16(dev, B43_MMIO_TSF_0); - - test3 = b43_read16(dev, B43_MMIO_TSF_3); - test2 = b43_read16(dev, B43_MMIO_TSF_2); - test1 = b43_read16(dev, B43_MMIO_TSF_1); - } while (v3 != test3 || v2 != test2 || v1 != test1); - - *tsf = v3; - *tsf <<= 48; - tmp = v2; - tmp <<= 32; - *tsf |= tmp; - tmp = v1; - tmp <<= 16; - *tsf |= tmp; - *tsf |= v0; - } -} - -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) -{ - /* Be careful with the in-progress timer. - * First zero out the low register, so we have a full - * register-overflow duration to complete the operation. - */ - if (dev->dev->id.revision >= 3) { - u32 lo = (tsf & 0x00000000FFFFFFFFULL); - u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32; - - b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0); - mmiowb(); - b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi); - mmiowb(); - b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo); - } else { - u16 v0 = (tsf & 0x000000000000FFFFULL); - u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16; - u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32; - u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48; - - b43_write16(dev, B43_MMIO_TSF_0, 0); - mmiowb(); - b43_write16(dev, B43_MMIO_TSF_3, v3); - mmiowb(); - b43_write16(dev, B43_MMIO_TSF_2, v2); - mmiowb(); - b43_write16(dev, B43_MMIO_TSF_1, v1); - mmiowb(); - b43_write16(dev, B43_MMIO_TSF_0, v0); - } -} - -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); - dev->short_slot = 1; -} - -static void b43_short_slot_timing_disable(struct b43_wldev *dev) -{ - b43_set_slot_time(dev, 20); - dev->short_slot = 0; -} - -/* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable. - * Returns the _previously_ enabled IRQ mask. - */ -static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask) -{ - u32 old_mask; - - old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); - b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask); - - return old_mask; -} - -/* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable. - * Returns the _previously_ enabled IRQ mask. - */ -static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask) -{ - u32 old_mask; - - old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); - b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask); - - return old_mask; -} - -/* 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 < 0x0A; 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) { - /* Either pairwise key or address is 00:00:00:00:00:00 - * for transmit-only keys. Search the index. */ - 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) { - b43err(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); -} - -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); - } - } -} - -/* Turn the Analog ON/OFF */ -static void b43_switch_analog(struct b43_wldev *dev, int on) -{ - switch (dev->phy.type) { - case B43_PHYTYPE_A: - case B43_PHYTYPE_G: - b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4); - break; - case B43_PHYTYPE_N: - b43_phy_write(dev, B43_NPHY_AFECTL_OVER, - on ? 0 : 0x7FFF); - break; - default: - B43_WARN_ON(1); - } -} - -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 */ - b43_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); - B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel); -} - -static void b43_calculate_link_quality(struct b43_wldev *dev) -{ - /* Top half of Link Quality calculation. */ - - if (dev->noisecalc.calculation_running) - return; - dev->noisecalc.channel_at_start = dev->phy.channel; - 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 *phy = &dev->phy; - u16 tmp; - u8 noise[4]; - u8 i, j; - s32 average; - - /* Bottom half of Link Quality calculation. */ - - B43_WARN_ON(!dev->noisecalc.calculation_running); - if (dev->noisecalc.channel_at_start != phy->channel) - goto drop_calculation; - *((__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; - drop_calculation: - 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, IEEE80211_IF_TYPE_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, IEEE80211_IF_TYPE_IBSS)) - 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; -} - -static int b43_antenna_from_ieee80211(struct b43_wldev *dev, u8 antenna) -{ - antenna = b43_ieee80211_antenna_sanitize(dev, antenna); - switch (antenna) { - case 0: /* default/diversity */ - return B43_ANTENNA_DEFAULT; - case 1: /* Antenna 0 */ - return B43_ANTENNA0; - case 2: /* Antenna 1 */ - return B43_ANTENNA1; - case 3: /* Antenna 2 */ - return B43_ANTENNA2; - case 4: /* Antenna 3 */ - return B43_ANTENNA3; - default: - return B43_ANTENNA_DEFAULT; - } -} - -/* 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_from_ieee80211(dev, info->antenna_sel_tx); - 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) { - b43warn(dev->wl, "Did not find a valid TIM IE in " - "the beacon template packet. AP or IBSS operation " - "may be broken.\n"); - } else - b43dbg(dev->wl, "Updated beacon template\n"); -} - -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 handle_irq_beacon(struct b43_wldev *dev) -{ - struct b43_wl *wl = dev->wl; - u32 cmd, beacon0_valid, beacon1_valid; - - if (!b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) - return; - - /* This is the bottom half of the asynchronous beacon update. */ - - /* Ignore interrupt in the future. */ - dev->irq_savedstate &= ~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_savedstate |= B43_IRQ_BEACON; - return; - } - - if (!beacon0_valid) { - if (!wl->beacon0_uploaded) { - b43_write_beacon_template(dev, 0x68, 0x18); - b43_write_probe_resp_template(dev, 0x268, 0x4A, - &__b43_ratetable[3]); - wl->beacon0_uploaded = 1; - } - cmd = b43_read32(dev, B43_MMIO_MACCMD); - cmd |= B43_MACCMD_BEACON0_VALID; - b43_write32(dev, B43_MMIO_MACCMD, cmd); - } else if (!beacon1_valid) { - if (!wl->beacon1_uploaded) { - b43_write_beacon_template(dev, 0x468, 0x1A); - wl->beacon1_uploaded = 1; - } - 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 */ - dev->irq_savedstate = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); - handle_irq_beacon(dev); - /* The handler might have updated the IRQ mask. */ - b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, - dev->irq_savedstate); - 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. */ - - 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_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len) -{ - u32 tmp; - u16 i, len; - - len = min((u16) ssid_len, (u16) 0x100); - for (i = 0; i < len; i += sizeof(u32)) { - tmp = (u32) (ssid[i + 0]); - if (i + 1 < len) - tmp |= (u32) (ssid[i + 1]) << 8; - if (i + 2 < len) - tmp |= (u32) (ssid[i + 2]) << 16; - if (i + 3 < len) - tmp |= (u32) (ssid[i + 3]) << 24; - b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp); - } - b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len); -} - -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_interrupt_enable(dev, dev->irq_savedstate); - 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]); - 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; - - if (!dev) - return IRQ_NONE; - - spin_lock(&dev->wl->irq_lock); - - if (b43_status(dev) < B43_STAT_STARTED) - goto out; - reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); - if (reason == 0xffffffff) /* shared IRQ */ - goto out; - ret = IRQ_HANDLED; - reason &= b43_read32(dev, B43_MMIO_GEN_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; - 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. */ - dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL); - /* 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; -} - -static void 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) -{ - do_release_fw(&dev->fw.ucode); - do_release_fw(&dev->fw.pcm); - do_release_fw(&dev->fw.initvals); - do_release_fw(&dev->fw.initvals_band); -} - -static void b43_print_fw_helptext(struct b43_wl *wl, bool error) -{ - const char *text; - - text = "You must go to " - "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware " - "and download the latest firmware (version 4).\n"; - if (error) - b43err(wl, text); - else - b43warn(wl, text); -} - -static int do_request_fw(struct b43_wldev *dev, - const char *name, - struct b43_firmware_file *fw, - bool silent) -{ - char path[sizeof(modparam_fwpostfix) + 32]; - const struct firmware *blob; - struct b43_fw_header *hdr; - u32 size; - int err; - - if (!name) { - /* Don't fetch anything. Free possibly cached firmware. */ - do_release_fw(fw); - return 0; - } - if (fw->filename) { - if (strcmp(fw->filename, name) == 0) - return 0; /* Already have this fw. */ - /* Free the cached firmware first. */ - do_release_fw(fw); - } - - snprintf(path, ARRAY_SIZE(path), - "b43%s/%s.fw", - modparam_fwpostfix, name); - err = request_firmware(&blob, path, dev->dev->dev); - if (err == -ENOENT) { - if (!silent) { - b43err(dev->wl, "Firmware file \"%s\" not found\n", - path); - } - return err; - } else if (err) { - b43err(dev->wl, "Firmware file \"%s\" request failed (err=%d)\n", - path, 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; - - return 0; - -err_format: - b43err(dev->wl, "Firmware file \"%s\" format error.\n", path); - release_firmware(blob); - - return -EPROTO; -} - -static int b43_request_firmware(struct b43_wldev *dev) -{ - struct b43_firmware *fw = &dev->fw; - const u8 rev = 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 = do_request_fw(dev, filename, &fw->ucode, 0); - 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 = do_request_fw(dev, filename, &fw->pcm, 1); - 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 = do_request_fw(dev, filename, &fw->initvals, 0); - 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 = do_request_fw(dev, filename, &fw->initvals_band, 0); - if (err) - goto err_load; - - return 0; - -err_load: - b43_print_fw_helptext(dev->wl, 1); - goto error; - -err_no_ucode: - err = -ENODEV; - b43err(dev->wl, "No microcode available for core rev %u\n", rev); - goto error; - -err_no_pcm: - err = -ENODEV; - b43err(dev->wl, "No PCM available for core rev %u\n", rev); - goto error; - -err_no_initvals: - err = -ENODEV; - b43err(dev->wl, "No Initial Values firmware file for PHY %u, " - "core rev %u\n", dev->phy.type, rev); - goto error; - -error: - b43_release_firmware(dev); - 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); - - if (dev->fw.opensource) { - /* Patchlevel info is encoded in the "time" field. */ - dev->fw.patch = fwtime; - b43info(dev->wl, "Loading OpenSource firmware version %u.%u%s\n", - dev->fw.rev, dev->fw.patch, - dev->fw.pcm_request_failed ? " (Hardware crypto not supported)" : ""); - } 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)) { - b43warn(dev->wl, "You are using an old firmware image. " - "Support for old firmware will be removed in 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) -{ - 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, IEEE80211_IF_TYPE_AP)) - ctl |= B43_MACCTL_AP; - else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS)) - 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_radio_turn_off(dev, 1); - b43_gpio_cleanup(dev); - b43_lo_g_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, tmp; - 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; - b43_radio_turn_on(dev); - - b43_write16(dev, 0x03E6, 0x0000); - err = b43_phy_init(dev); - if (err) - goto err_radio_off; - - /* Select initial Interference Mitigation. */ - tmp = phy->interfmode; - phy->interfmode = B43_INTERFMODE_NONE; - b43_radio_set_interference_mitigation(dev, tmp); - - b43_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_radio_off: - b43_radio_turn_off(dev, 1); -err_gpio_clean: - b43_gpio_cleanup(dev); - return err; -} - -static void b43_periodic_every60sec(struct b43_wldev *dev) -{ - struct b43_phy *phy = &dev->phy; - - if (phy->type != B43_PHYTYPE_G) - return; - if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) { - b43_mac_suspend(dev); - b43_calc_nrssi_slope(dev); - if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) { - u8 old_chan = phy->channel; - - /* VCO Calibration */ - if (old_chan >= 8) - b43_radio_selectchannel(dev, 1, 0); - else - b43_radio_selectchannel(dev, 13, 0); - b43_radio_selectchannel(dev, old_chan, 0); - } - b43_mac_enable(dev); - } -} - -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; - - if (phy->type == B43_PHYTYPE_G) { - //TODO: update_aci_moving_average - if (phy->aci_enable && phy->aci_wlan_automatic) { - b43_mac_suspend(dev); - if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) { - if (0 /*TODO: bunch of conditions */ ) { - b43_radio_set_interference_mitigation - (dev, B43_INTERFMODE_MANUALWLAN); - } - } else if (1 /*TODO*/) { - /* - if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) { - b43_radio_set_interference_mitigation(dev, - B43_INTERFMODE_NONE); - } - */ - } - b43_mac_enable(dev); - } else if (phy->interfmode == B43_INTERFMODE_NONWLAN && - phy->rev == 1) { - //TODO: implement rev1 workaround - } - } - b43_phy_xmitpower(dev); //FIXME: unless scanning? - b43_lo_g_maintanance_work(dev); - //TODO for APHY (temperature?) - - 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); -} - -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)); -} - -static void b43_rng_exit(struct b43_wl *wl) -{ - if (wl->rng_initialized) - hwrng_unregister(&wl->rng); -} - -static int b43_rng_init(struct b43_wl *wl) -{ - int err; - - 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); - } - - 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. */ - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - B43_WARN_ON(skb_shinfo(skb)->nr_frags); - if (unlikely(!dev)) - return NETDEV_TX_BUSY; - - /* 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)) - return NETDEV_TX_BUSY; - 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 cw_min, cw_max, aifs, bslots, tmp; - unsigned int i; - - const u16 aCWmin = 0x0001; - const u16 aCWmax = 0x03FF; - - /* Calculate the default values for the parameters, if needed. */ - switch (shm_offset) { - case B43_QOS_VOICE: - aifs = (p->aifs == -1) ? 2 : p->aifs; - cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 4 - 1) : p->cw_min; - cw_max = (p->cw_max == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_max; - break; - case B43_QOS_VIDEO: - aifs = (p->aifs == -1) ? 2 : p->aifs; - cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_min; - cw_max = (p->cw_max == 0) ? aCWmin : p->cw_max; - break; - case B43_QOS_BESTEFFORT: - aifs = (p->aifs == -1) ? 3 : p->aifs; - cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min; - cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max; - break; - case B43_QOS_BACKGROUND: - aifs = (p->aifs == -1) ? 7 : p->aifs; - cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min; - cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max; - break; - default: - B43_WARN_ON(1); - return; - } - if (cw_min <= 0) - cw_min = aCWmin; - if (cw_max <= 0) - cw_max = aCWmin; - bslots = b43_read16(dev, B43_MMIO_RNG) % cw_min; - - memset(¶ms, 0, sizeof(params)); - - params[B43_QOSPARAM_TXOP] = p->txop * 32; - params[B43_QOSPARAM_CWMIN] = cw_min; - params[B43_QOSPARAM_CWMAX] = cw_max; - params[B43_QOSPARAM_CWCUR] = cw_min; - params[B43_QOSPARAM_AIFS] = aifs; - params[B43_QOSPARAM_BSLOTS] = bslots; - params[B43_QOSPARAM_REGGAP] = bslots + 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]); - } - } -} - -/* Update the QOS parameters in hardware. */ -static void b43_qos_update(struct b43_wldev *dev) -{ - struct b43_wl *wl = dev->wl; - struct b43_qos_params *params; - unsigned long flags; - unsigned int i; - - /* Mapping of mac80211 queues to b43 SHM offsets. */ - static const u16 qos_shm_offsets[] = { - [0] = B43_QOS_VOICE, - [1] = B43_QOS_VIDEO, - [2] = B43_QOS_BESTEFFORT, - [3] = B43_QOS_BACKGROUND, - }; - BUILD_BUG_ON(ARRAY_SIZE(qos_shm_offsets) != ARRAY_SIZE(wl->qos_params)); - - b43_mac_suspend(dev); - spin_lock_irqsave(&wl->irq_lock, flags); - - for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) { - params = &(wl->qos_params[i]); - if (params->need_hw_update) { - b43_qos_params_upload(dev, &(params->p), - qos_shm_offsets[i]); - params->need_hw_update = 0; - } - } - - spin_unlock_irqrestore(&wl->irq_lock, flags); - b43_mac_enable(dev); -} - -static void b43_qos_clear(struct b43_wl *wl) -{ - struct b43_qos_params *params; - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) { - params = &(wl->qos_params[i]); - - memset(&(params->p), 0, sizeof(params->p)); - params->p.aifs = -1; - params->need_hw_update = 1; - } -} - -/* Initialize the core's QOS capabilities */ -static void b43_qos_init(struct b43_wldev *dev) -{ - struct b43_wl *wl = dev->wl; - unsigned int i; - - /* Upload the current QOS parameters. */ - for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) - wl->qos_params[i].need_hw_update = 1; - b43_qos_update(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 void b43_qos_update_work(struct work_struct *work) -{ - struct b43_wl *wl = container_of(work, struct b43_wl, qos_update_work); - struct b43_wldev *dev; - - mutex_lock(&wl->mutex); - dev = wl->current_dev; - if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) - b43_qos_update(dev); - mutex_unlock(&wl->mutex); -} - -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); - unsigned long flags; - unsigned int queue = (unsigned int)_queue; - struct b43_qos_params *p; - - 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; - } - - spin_lock_irqsave(&wl->irq_lock, flags); - p = &(wl->qos_params[queue]); - memcpy(&(p->p), params, sizeof(p->p)); - p->need_hw_update = 1; - spin_unlock_irqrestore(&wl->irq_lock, flags); - - queue_work(hw->workqueue, &wl->qos_update_work); - - return 0; -} - -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 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 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; -} - -static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) -{ - struct b43_wl *wl = hw_to_b43_wl(hw); - struct b43_wldev *dev; - struct b43_phy *phy; - unsigned long flags; - int antenna; - int err = 0; - u32 savedirqs; - - 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; - - /* Disable IRQs while reconfiguring the device. - * This makes it possible to drop the spinlock throughout - * the reconfiguration process. */ - spin_lock_irqsave(&wl->irq_lock, flags); - if (b43_status(dev) < B43_STAT_STARTED) { - spin_unlock_irqrestore(&wl->irq_lock, flags); - goto out_unlock_mutex; - } - savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL); - spin_unlock_irqrestore(&wl->irq_lock, flags); - b43_synchronize_irq(dev); - - /* Switch to the requested channel. - * The firmware takes care of races with the TX handler. */ - if (conf->channel->hw_value != phy->channel) - b43_radio_selectchannel(dev, conf->channel->hw_value, 0); - - /* Enable/Disable ShortSlot timing. */ - if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) != - dev->short_slot) { - B43_WARN_ON(phy->type != B43_PHYTYPE_G); - if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) - b43_short_slot_timing_enable(dev); - else - b43_short_slot_timing_disable(dev); - } - - dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP); - - /* Adjust the desired TX power level. */ - if (conf->power_level != 0) { - if (conf->power_level != phy->power_level) { - phy->power_level = conf->power_level; - b43_phy_xmitpower(dev); - } - } - - /* Antennas for RX and management frame TX. */ - antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx); - b43_mgmtframe_txantenna(dev, antenna); - antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx); - b43_set_rx_antenna(dev, antenna); - - /* Update templates for AP mode. */ - if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) - b43_set_beacon_int(dev, conf->beacon_int); - - if (!!conf->radio_enabled != phy->radio_on) { - if (conf->radio_enabled) { - b43_radio_turn_on(dev); - 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_radio_turn_off(dev, 0); - b43info(dev->wl, "Radio turned off by software\n"); - } - } - - spin_lock_irqsave(&wl->irq_lock, flags); - b43_interrupt_enable(dev, savedirqs); - mmiowb(); - spin_unlock_irqrestore(&wl->irq_lock, flags); - out_unlock_mutex: - mutex_unlock(&wl->mutex); - - return err; -} - -static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, - const u8 *local_addr, const u8 *addr, - struct ieee80211_key_conf *key) -{ - struct b43_wl *wl = hw_to_b43_wl(hw); - struct b43_wldev *dev; - unsigned long flags; - u8 algorithm; - u8 index; - int err; - DECLARE_MAC_BUF(mac); - - if (modparam_nohwcrypt) - return -ENOSPC; /* User disabled HW-crypto */ - - mutex_lock(&wl->mutex); - spin_lock_irqsave(&wl->irq_lock, flags); - - dev = wl->current_dev; - err = -ENODEV; - if (!dev || b43_status(dev) < B43_STAT_INITIALIZED) - goto out_unlock; - - if (dev->fw.pcm_request_failed) { - /* 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 == 5) - 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 (is_broadcast_ether_addr(addr)) { - /* addr is FF:FF:FF:FF:FF:FF for default keys */ - err = b43_key_write(dev, index, algorithm, - key->key, key->keylen, NULL, key); - } else { - /* - * either pairwise key or address is 00:00:00:00:00:00 - * for transmit-only keys - */ - err = b43_key_write(dev, -1, algorithm, - key->key, key->keylen, addr, 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: - spin_unlock_irqrestore(&wl->irq_lock, flags); - mutex_unlock(&wl->mutex); - if (!err) { - b43dbg(wl, "%s hardware based encryption for keyidx: %d, " - "mac: %s\n", - cmd == SET_KEY ? "Using" : "Disabling", key->keyidx, - print_mac(mac, addr)); - } - 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); -} - -static int b43_op_config_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_if_conf *conf) -{ - struct b43_wl *wl = hw_to_b43_wl(hw); - struct b43_wldev *dev = wl->current_dev; - unsigned long flags; - - if (!dev) - return -ENODEV; - mutex_lock(&wl->mutex); - spin_lock_irqsave(&wl->irq_lock, flags); - B43_WARN_ON(wl->vif != vif); - 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 (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) { - B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP); - b43_set_ssid(dev, conf->ssid, conf->ssid_len); - if (conf->beacon) - b43_update_templates(wl, conf->beacon); - } - b43_write_mac_bssid_templates(dev); - } - spin_unlock_irqrestore(&wl->irq_lock, flags); - mutex_unlock(&wl->mutex); - - return 0; -} - -/* 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); - dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL); - 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_interrupt_enable(dev, dev->irq_savedstate); - - /* 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 > 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) - 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) -{ - struct b43_txpower_lo_control *lo; - int i; - - memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); - memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); - - phy->aci_enable = 0; - phy->aci_wlan_automatic = 0; - phy->aci_hw_rssi = 0; - - phy->radio_off_context.valid = 0; - - lo = phy->lo_control; - if (lo) { - memset(lo, 0, sizeof(*(phy->lo_control))); - lo->tx_bias = 0xFF; - INIT_LIST_HEAD(&lo->calib_list); - } - phy->max_lb_gain = 0; - phy->trsw_rx_gain = 0; - phy->txpwr_offset = 0; - - /* NRSSI */ - phy->nrssislope = 0; - for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) - phy->nrssi[i] = -1000; - for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) - phy->nrssi_lt[i] = i; - - phy->lofcal = 0xFFFF; - phy->initval = 0xFFFF; - - phy->interfmode = B43_INTERFMODE_NONE; - phy->channel = 0xFF; - - phy->hardware_power_control = !!modparam_hwpctl; - - /* PHY TX errors counter. */ - atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT); - - /* OFDM-table address caching. */ - phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN; -} - -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_savedstate = B43_IRQ_MASKTEMPLATE; - - 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 */ -} - -/* 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 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, IEEE80211_IF_TYPE_IBSS) || 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, IEEE80211_IF_TYPE_IBSS)) { - 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) -{ - struct b43_phy *phy = &dev->phy; - 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); - b43_radio_turn_off(dev, 1); - b43_switch_analog(dev, 0); - if (phy->dyn_tssi_tbl) - kfree(phy->tssi2dbm); - kfree(phy->lo_control); - phy->lo_control = NULL; - 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); - } - - if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) { - phy->lo_control = - kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL); - if (!phy->lo_control) { - err = -ENOMEM; - goto err_busdown; - } - } - setup_struct_wldev_for_init(dev); - - err = b43_phy_init_tssi2dbm_table(dev); - if (err) - goto err_kfree_lo_control; - - /* 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); - b43_phy_early_init(dev); - err = b43_chip_init(dev); - if (err) - goto err_kfree_tssitbl; - 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; - } else if (phy->type == B43_PHYTYPE_B) { - hf |= B43_HF_SYMW; - if (phy->rev >= 2 && phy->radio_ver == 0x2050) - hf &= ~B43_HF_GDCW; - } - 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, 1); /* Enable dynamic PCTL */ - 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_kfree_tssitbl: - if (phy->dyn_tssi_tbl) - kfree(phy->tssi2dbm); - err_kfree_lo_control: - kfree(phy->lo_control); - phy->lo_control = NULL; - 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 != IEEE80211_IF_TYPE_AP && - conf->type != IEEE80211_IF_TYPE_STA && - conf->type != IEEE80211_IF_TYPE_WDS && - conf->type != IEEE80211_IF_TYPE_IBSS) - 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; - bool do_rfkill_exit = 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); - - /* First register RFkill. - * LEDs that are registered later depend on it. */ - b43_rfkill_init(dev); - - mutex_lock(&wl->mutex); - - if (b43_status(dev) < B43_STAT_INITIALIZED) { - err = b43_wireless_core_init(dev); - if (err) { - do_rfkill_exit = 1; - 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); - do_rfkill_exit = 1; - goto out_mutex_unlock; - } - } - - out_mutex_unlock: - mutex_unlock(&wl->mutex); - - if (do_rfkill_exit) - b43_rfkill_exit(dev); - - 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; - - b43_rfkill_exit(dev); - cancel_work_sync(&(wl->qos_update_work)); - 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); - mutex_unlock(&wl->mutex); -} - -static int b43_op_set_retry_limit(struct ieee80211_hw *hw, - u32 short_retry_limit, u32 long_retry_limit) -{ - struct b43_wl *wl = hw_to_b43_wl(hw); - struct b43_wldev *dev; - int err = 0; - - mutex_lock(&wl->mutex); - dev = wl->current_dev; - if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) { - err = -ENODEV; - goto out_unlock; - } - b43_set_retry_limits(dev, short_retry_limit, long_retry_limit); -out_unlock: - mutex_unlock(&wl->mutex); - - return err; -} - -static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, int aid, int set) -{ - struct b43_wl *wl = hw_to_b43_wl(hw); - struct sk_buff *beacon; - unsigned long flags; - - /* 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(hw, wl->vif); - if (unlikely(!beacon)) - return -ENOMEM; - spin_lock_irqsave(&wl->irq_lock, flags); - b43_update_templates(wl, beacon); - spin_unlock_irqrestore(&wl->irq_lock, flags); - - return 0; -} - -static int b43_op_ibss_beacon_update(struct ieee80211_hw *hw, - struct sk_buff *beacon) -{ - struct b43_wl *wl = hw_to_b43_wl(hw); - unsigned long flags; - - spin_lock_irqsave(&wl->irq_lock, flags); - b43_update_templates(wl, beacon); - 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, - const u8 *addr) -{ - struct b43_wl *wl = hw_to_b43_wl(hw); - - B43_WARN_ON(!vif || wl->vif != vif); -} - -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, - .config_interface = b43_op_config_interface, - .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, - .start = b43_op_start, - .stop = b43_op_stop, - .set_retry_limit = b43_op_set_retry_limit, - .set_tim = b43_op_beacon_set_tim, - .beacon_update = b43_op_ibss_beacon_update, - .sta_notify = b43_op_sta_notify, -}; - -/* 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: - 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); -} - -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; - 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: - 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; - } - } - - 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_powerdown; - err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy); - if (err) - goto err_powerdown; - - /* Now set some default "current_dev" */ - if (!wl->current_dev) - wl->current_dev = dev; - INIT_WORK(&dev->restart_work, b43_chip_reset); - - b43_radio_turn_off(dev, 1); - b43_switch_analog(dev, 0); - ssb_device_disable(dev->dev, 0); - ssb_bus_may_powerdown(bus); - -out: - return err; - -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; - - wldev = ssb_get_drvdata(dev); - wl = wldev->wl; - cancel_work_sync(&wldev->restart_work); - 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, LINKSYS, 0x0015) || - IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013)) - 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; - } - - /* fill hw info */ - hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE | - IEEE80211_HW_RX_INCLUDES_FCS | - IEEE80211_HW_SIGNAL_DBM | - IEEE80211_HW_NOISE_DBM; - - hw->queues = b43_modparam_qos ? 4 : 1; - 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); - - /* Get and initialize struct b43_wl */ - wl = hw_to_b43_wl(hw); - memset(wl, 0, sizeof(*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->qos_update_work, b43_qos_update_work); - INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work); - - ssb_set_devtypedata(dev, wl); - b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id); - 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); - - B43_WARN_ON(!wl); - if (wl->current_dev == wldev) - 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 = "", *feat_rfkill = ""; - -#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 -#ifdef CONFIG_B43_RFKILL - feat_rfkill = "R"; -#endif - printk(KERN_INFO "Broadcom 43xx driver loaded " - "[ Features: %s%s%s%s%s, Firmware-ID: " - B43_SUPPORTED_FIRMWARE_ID " ]\n", - feat_pci, feat_pcmcia, feat_nphy, - feat_leds, feat_rfkill); -} - -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) |