diff options
Diffstat (limited to 'drivers/net/wireless/b43/main.c')
| -rw-r--r-- | drivers/net/wireless/b43/main.c | 4070 |
1 files changed, 4070 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c new file mode 100644 index 000000000000..c141a264ac45 --- /dev/null +++ b/drivers/net/wireless/b43/main.c @@ -0,0 +1,4070 @@ +/* + + Broadcom B43 wireless driver + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> + Copyright (c) 2005 Stefano Brivio <st3@riseup.net> + 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/dma-mapping.h> +#include <asm/unaligned.h> + +#include "b43.h" +#include "main.h" +#include "debugfs.h" +#include "phy.h" +#include "dma.h" +#include "pio.h" +#include "sysfs.h" +#include "xmit.h" +#include "sysfs.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"); + +extern char *nvram_get(char *name); + +#if defined(CONFIG_B43_DMA) && defined(CONFIG_B43_PIO) +static int modparam_pio; +module_param_named(pio, modparam_pio, int, 0444); +MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode"); +#elif defined(CONFIG_B43_DMA) +# define modparam_pio 0 +#elif defined(CONFIG_B43_PIO) +# define modparam_pio 1 +#endif + +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 int modparam_short_retry = B43_DEFAULT_SHORT_RETRY_LIMIT; +module_param_named(short_retry, modparam_short_retry, int, 0444); +MODULE_PARM_DESC(short_retry, "Short-Retry-Limit (0 - 15)"); + +static int modparam_long_retry = B43_DEFAULT_LONG_RETRY_LIMIT; +module_param_named(long_retry, modparam_long_retry, int, 0444); +MODULE_PARM_DESC(long_retry, "Long-Retry-Limit (0 - 15)"); + +static char modparam_fwpostfix[16]; +module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444); +MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load."); + +static int modparam_hwpctl; +module_param_named(hwpctl, modparam_hwpctl, int, 0444); +MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)"); + +static int modparam_nohwcrypt; +module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444); +MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); + +static 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_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) \ + { \ + .rate = B43_RATE_TO_BASE100KBPS(_rateid), \ + .val = (_rateid), \ + .val2 = (_rateid), \ + .flags = (_flags), \ + } +static struct ieee80211_rate __b43_ratetable[] = { + RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK), + RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2), + RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2), + RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2), + RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM), + RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM), + RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM), + RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM), + RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM), + RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM), + RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM), + RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM), +}; + +#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 CHANTAB_ENT(_chanid, _freq) \ + { \ + .chan = (_chanid), \ + .freq = (_freq), \ + .val = (_chanid), \ + .flag = IEEE80211_CHAN_W_SCAN | \ + IEEE80211_CHAN_W_ACTIVE_SCAN | \ + IEEE80211_CHAN_W_IBSS, \ + .power_level = 0xFF, \ + .antenna_max = 0xFF, \ + } +static struct ieee80211_channel b43_bg_chantable[] = { + CHANTAB_ENT(1, 2412), + CHANTAB_ENT(2, 2417), + CHANTAB_ENT(3, 2422), + CHANTAB_ENT(4, 2427), + CHANTAB_ENT(5, 2432), + CHANTAB_ENT(6, 2437), + CHANTAB_ENT(7, 2442), + CHANTAB_ENT(8, 2447), + CHANTAB_ENT(9, 2452), + CHANTAB_ENT(10, 2457), + CHANTAB_ENT(11, 2462), + CHANTAB_ENT(12, 2467), + CHANTAB_ENT(13, 2472), + CHANTAB_ENT(14, 2484), +}; + +#define b43_bg_chantable_size ARRAY_SIZE(b43_bg_chantable) +static struct ieee80211_channel b43_a_chantable[] = { + CHANTAB_ENT(36, 5180), + CHANTAB_ENT(40, 5200), + CHANTAB_ENT(44, 5220), + CHANTAB_ENT(48, 5240), + CHANTAB_ENT(52, 5260), + CHANTAB_ENT(56, 5280), + CHANTAB_ENT(60, 5300), + CHANTAB_ENT(64, 5320), + CHANTAB_ENT(149, 5745), + CHANTAB_ENT(153, 5765), + CHANTAB_ENT(157, 5785), + CHANTAB_ENT(161, 5805), + CHANTAB_ENT(165, 5825), +}; + +#define b43_a_chantable_size ARRAY_SIZE(b43_a_chantable) + +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) +{ + u32 ret; + + if (routing == B43_SHM_SHARED) { + B43_WARN_ON(offset & 0x0001); + if (offset & 0x0003) { + /* Unaligned access */ + b43_shm_control_word(dev, routing, offset >> 2); + ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); + ret <<= 16; + b43_shm_control_word(dev, routing, (offset >> 2) + 1); + ret |= b43_read16(dev, B43_MMIO_SHM_DATA); + + return ret; + } + offset >>= 2; + } + b43_shm_control_word(dev, routing, offset); + ret = b43_read32(dev, B43_MMIO_SHM_DATA); + + return ret; +} + +u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset) +{ + u16 ret; + + if (routing == B43_SHM_SHARED) { + B43_WARN_ON(offset & 0x0001); + if (offset & 0x0003) { + /* Unaligned access */ + b43_shm_control_word(dev, routing, offset >> 2); + ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); + + return ret; + } + offset >>= 2; + } + b43_shm_control_word(dev, routing, offset); + ret = b43_read16(dev, B43_MMIO_SHM_DATA); + + return ret; +} + +void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value) +{ + if (routing == B43_SHM_SHARED) { + B43_WARN_ON(offset & 0x0001); + if (offset & 0x0003) { + /* Unaligned access */ + b43_shm_control_word(dev, routing, offset >> 2); + mmiowb(); + b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, + (value >> 16) & 0xffff); + mmiowb(); + b43_shm_control_word(dev, routing, (offset >> 2) + 1); + mmiowb(); + b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff); + return; + } + offset >>= 2; + } + b43_shm_control_word(dev, routing, offset); + mmiowb(); + b43_write32(dev, B43_MMIO_SHM_DATA, value); +} + +void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value) +{ + if (routing == B43_SHM_SHARED) { + B43_WARN_ON(offset & 0x0001); + if (offset & 0x0003) { + /* Unaligned access */ + b43_shm_control_word(dev, routing, offset >> 2); + mmiowb(); + b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value); + return; + } + offset >>= 2; + } + b43_shm_control_word(dev, routing, offset); + mmiowb(); + b43_write16(dev, B43_MMIO_SHM_DATA, value); +} + +/* Read HostFlags */ +u32 b43_hf_read(struct b43_wldev * dev) +{ + u32 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_HOSTFLO); + + return ret; +} + +/* Write HostFlags */ +void b43_hf_write(struct b43_wldev *dev, u32 value) +{ + b43_shm_write16(dev, B43_SHM_SHARED, + B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF)); + b43_shm_write16(dev, B43_SHM_SHARED, + B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16)); +} + +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_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; + } + + 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); +} + +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) +{ + b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4); +} + +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_STATUS2_BITFIELD, + b43_read32(dev, B43_MMIO_STATUS2_BITFIELD) + | (1 << 4)); + 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] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); + noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); + noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); + noise[3] = limit_value(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); + } + dev->reg124_set_0x4 = 0; + if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS)) + dev->reg124_set_0x4 = 1; +} + +static void handle_irq_atim_end(struct b43_wldev *dev) +{ + if (!dev->reg124_set_0x4 /*FIXME rename this variable */ ) + return; + b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, + b43_read32(dev, B43_MMIO_STATUS2_BITFIELD) + | 0x4); +} + +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)); +} + +static void b43_write_beacon_template(struct b43_wldev *dev, + u16 ram_offset, + u16 shm_size_offset, u8 rate) +{ + int len; + const u8 *data; + + B43_WARN_ON(!dev->cached_beacon); + len = min((size_t) dev->cached_beacon->len, + 0x200 - sizeof(struct b43_plcp_hdr6)); + data = (const u8 *)(dev->cached_beacon->data); + b43_write_template_common(dev, data, + len, ram_offset, shm_size_offset, rate); +} + +static void b43_write_probe_resp_plcp(struct b43_wldev *dev, + u16 shm_offset, u16 size, u8 rate) +{ + struct b43_plcp_hdr4 plcp; + u32 tmp; + __le16 dur; + + plcp.data = 0; + b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); + dur = ieee80211_generic_frame_duration(dev->wl->hw, + dev->wl->if_id, size, + B43_RATE_TO_BASE100KBPS(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 u8 *b43_generate_probe_resp(struct b43_wldev *dev, + u16 * dest_size, u8 rate) +{ + const u8 *src_data; + u8 *dest_data; + u16 src_size, elem_size, src_pos, dest_pos; + __le16 dur; + struct ieee80211_hdr *hdr; + + B43_WARN_ON(!dev->cached_beacon); + src_size = dev->cached_beacon->len; + src_data = (const u8 *)dev->cached_beacon->data; + + if (unlikely(src_size < 0x24)) { + b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n"); + return NULL; + } + + dest_data = kmalloc(src_size, GFP_ATOMIC); + if (unlikely(!dest_data)) + return NULL; + + /* 0x24 is offset of first variable-len Information-Element + * in beacon frame. + */ + memcpy(dest_data, src_data, 0x24); + src_pos = dest_pos = 0x24; + for (; src_pos < src_size - 2; src_pos += elem_size) { + elem_size = src_data[src_pos + 1] + 2; + if (src_data[src_pos] != 0x05) { /* TIM */ + 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->if_id, *dest_size, + B43_RATE_TO_BASE100KBPS(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, u8 rate) +{ + u8 *probe_resp_data; + u16 size; + + B43_WARN_ON(!dev->cached_beacon); + size = dev->cached_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_CCK_RATE_1MB); + b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB); + b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB); + b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB); + + 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); + kfree(probe_resp_data); +} + +static int b43_refresh_cached_beacon(struct b43_wldev *dev, + struct sk_buff *beacon) +{ + if (dev->cached_beacon) + kfree_skb(dev->cached_beacon); + dev->cached_beacon = beacon; + + return 0; +} + +static void b43_update_templates(struct b43_wldev *dev) +{ + u32 status; + + B43_WARN_ON(!dev->cached_beacon); + + b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB); + b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB); + b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB); + + status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD); + status |= 0x03; + b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); +} + +static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon) +{ + int err; + + err = b43_refresh_cached_beacon(dev, beacon); + if (unlikely(err)) + return; + b43_update_templates(dev); +} + +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, 0x188, (beacon_int << 16)); + } else { + b43_write16(dev, 0x606, (beacon_int >> 6)); + b43_write16(dev, 0x610, beacon_int); + } + b43_time_unlock(dev); +} + +static void handle_irq_beacon(struct b43_wldev *dev) +{ + u32 status; + + if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) + return; + + dev->irq_savedstate &= ~B43_IRQ_BEACON; + status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD); + + if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) { + /* ACK beacon IRQ. */ + b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON); + dev->irq_savedstate |= B43_IRQ_BEACON; + if (dev->cached_beacon) + kfree_skb(dev->cached_beacon); + dev->cached_beacon = NULL; + return; + } + if (!(status & 0x1)) { + b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB); + status |= 0x1; + b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); + } + if (!(status & 0x2)) { + b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB); + status |= 0x2; + b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); + } +} + +static void handle_irq_ucode_debug(struct b43_wldev *dev) +{ + //TODO +} + +/* 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"); + + 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(dev)) + b43_pio_rx(dev->pio.queue0); + else + b43_dma_rx(dev->dma.rx_ring0); + } + B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE); + B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE); + if (dma_reason[3] & B43_DMAIRQ_RX_DONE) { + if (b43_using_pio(dev)) + b43_pio_rx(dev->pio.queue3); + else + b43_dma_rx(dev->dma.rx_ring3); + } + 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 pio_irq_workaround(struct b43_wldev *dev, u16 base, int queueidx) +{ + u16 rxctl; + + rxctl = b43_read16(dev, base + B43_PIO_RXCTL); + if (rxctl & B43_PIO_RXCTL_DATAAVAILABLE) + dev->dma_reason[queueidx] |= B43_DMAIRQ_RX_DONE; + else + dev->dma_reason[queueidx] &= ~B43_DMAIRQ_RX_DONE; +} + +static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason) +{ + if (b43_using_pio(dev) && + (dev->dev->id.revision < 3) && + (!(reason & B43_IRQ_PIO_WORKAROUND))) { + /* Apply a PIO specific workaround to the dma_reasons */ + pio_irq_workaround(dev, B43_MMIO_PIO1_BASE, 0); + pio_irq_workaround(dev, B43_MMIO_PIO2_BASE, 1); + pio_irq_workaround(dev, B43_MMIO_PIO3_BASE, 2); + pio_irq_workaround(dev, B43_MMIO_PIO4_BASE, 3); + } + + 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 b43_release_firmware(struct b43_wldev *dev) +{ + release_firmware(dev->fw.ucode); + dev->fw.ucode = NULL; + release_firmware(dev->fw.pcm); + dev->fw.pcm = NULL; + release_firmware(dev->fw.initvals); + dev->fw.initvals = NULL; + release_firmware(dev->fw.initvals_band); + dev->fw.initvals_band = NULL; +} + +static void b43_print_fw_helptext(struct b43_wl *wl) +{ + b43err(wl, "You must go to " + "http://linuxwireless.org/en/users/Drivers/bcm43xx#devicefirmware " + "and download the correct firmware (version 4).\n"); +} + +static int do_request_fw(struct b43_wldev *dev, + const char *name, + const struct firmware **fw) +{ + char path[sizeof(modparam_fwpostfix) + 32]; + struct b43_fw_header *hdr; + u32 size; + int err; + + if (!name) + return 0; + + snprintf(path, ARRAY_SIZE(path), + "b43%s/%s.fw", + modparam_fwpostfix, name); + err = request_firmware(fw, path, dev->dev->dev); + if (err) { + b43err(dev->wl, "Firmware file \"%s\" not found " + "or load failed.\n", path); + return err; + } + if ((*fw)->size < sizeof(struct b43_fw_header)) + goto err_format; + hdr = (struct b43_fw_header *)((*fw)->data); + switch (hdr->type) { + case B43_FW_TYPE_UCODE: + case B43_FW_TYPE_PCM: + size = be32_to_cpu(hdr->size); + if (size != (*fw)->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; + } + + return err; + +err_format: + b43err(dev->wl, "Firmware file \"%s\" format error.\n", path); + 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; + + tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); + if (!fw->ucode) { + 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); + if (err) + goto err_load; + } + if (!fw->pcm) { + if ((rev >= 5) && (rev <= 10)) + filename = "pcm5"; + else if (rev >= 11) + filename = NULL; + else + goto err_no_pcm; + err = do_request_fw(dev, filename, &fw->pcm); + if (err) + goto err_load; + } + if (!fw->initvals) { + switch (dev->phy.type) { + case B43_PHYTYPE_A: + if ((rev >= 5) && (rev <= 10)) { + if (tmshigh & B43_TMSHIGH_GPHY) + 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 = "lp0initvals13"; + else + goto err_no_initvals; + break; + default: + goto err_no_initvals; + } + err = do_request_fw(dev, filename, &fw->initvals); + if (err) + goto err_load; + } + if (!fw->initvals_band) { + switch (dev->phy.type) { + case B43_PHYTYPE_A: + if ((rev >= 5) && (rev <= 10)) { + if (tmshigh & B43_TMSHIGH_GPHY) + 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; + default: + goto err_no_initvals; + } + err = do_request_fw(dev, filename, &fw->initvals_band); + if (err) + goto err_load; + } + + return 0; + +err_load: + b43_print_fw_helptext(dev->wl); + 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; + int err = 0; + + /* Upload Microcode. */ + data = (__be32 *) (dev->fw.ucode->data + hdr_len); + len = (dev->fw.ucode->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) { + /* Upload PCM data. */ + data = (__be32 *) (dev->fw.pcm->data + hdr_len); + len = (dev->fw.pcm->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); + b43_write32(dev, B43_MMIO_MACCTL, + B43_MACCTL_PSM_RUN | + B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA); + + /* 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 >= 50) { + b43err(dev->wl, "Microcode not responding\n"); + b43_print_fw_helptext(dev->wl); + err = -ENODEV; + goto out; + } + udelay(10); + } + 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); + b43_write32(dev, B43_MMIO_MACCTL, 0); + err = -EOPNOTSUPP; + goto out; + } + b43dbg(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); + + dev->fw.rev = fwrev; + dev->fw.patch = fwpatch; + + out: + 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 = be32_to_cpu(get_unaligned(&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); + + 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); + ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len); + count = be32_to_cpu(hdr->size); + err = b43_write_initvals(dev, ivals, count, + fw->initvals->size - hdr_len); + if (err) + goto out; + if (fw->initvals_band) { + hdr = (const struct b43_fw_header *)(fw->initvals_band->data); + ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len); + count = be32_to_cpu(hdr->size); + err = b43_write_initvals(dev, ivals, count, + fw->initvals_band->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.r1.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); + B43_WARN_ON(irqs_disabled()); + 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); + + /* Re-enable IRQs. */ + spin_lock_irq(&dev->wl->irq_lock); + b43_interrupt_enable(dev, dev->irq_savedstate); + spin_unlock_irq(&dev->wl->irq_lock); + } +} + +/* http://bcm-specs.sipsolutions.net/SuspendMAC */ +void b43_mac_suspend(struct b43_wldev *dev) +{ + int i; + u32 tmp; + + might_sleep(); + B43_WARN_ON(irqs_disabled()); + B43_WARN_ON(dev->mac_suspended < 0); + + if (dev->mac_suspended == 0) { + /* Mask IRQs before suspending MAC. Otherwise + * the MAC stays busy and won't suspend. */ + spin_lock_irq(&dev->wl->irq_lock); + tmp = b43_interrupt_disable(dev, B43_IRQ_ALL); + spin_unlock_irq(&dev->wl->irq_lock); + b43_synchronize_irq(dev); + dev->irq_savedstate = tmp; + + 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 = 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: + 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 TX-Antenna for management frames sent by firmware. */ +static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna) +{ + u16 ant = 0; + u16 tmp; + + switch (antenna) { + case B43_ANTENNA0: + ant |= B43_TX4_PHY_ANT0; + break; + case B43_ANTENNA1: + ant |= B43_TX4_PHY_ANT1; + break; + case B43_ANTENNA_AUTO: + ant |= B43_TX4_PHY_ANTLAST; + break; + default: + B43_WARN_ON(1); + } + + /* FIXME We also need to set the other flags of the PHY control field somewhere. */ + + /* For Beacons */ + tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL); + tmp = (tmp & ~B43_TX4_PHY_ANT) | ant; + b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp); + /* For ACK/CTS */ + tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL); + tmp = (tmp & ~B43_TX4_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_TX4_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_leds_exit(dev); + b43_gpio_cleanup(dev); + /* firmware is released later */ +} + +/* Initialize the chip + * http://bcm-specs.sipsolutions.net/ChipInit + */ +static int b43_chip_init(struct b43_wldev *dev) +{ + struct b43_phy *phy = &dev->phy; + int err, tmp; + u32 value32; + u16 value16; + + b43_write32(dev, B43_MMIO_MACCTL, + B43_MACCTL_PSM_JMP0 | B43_MACCTL_IHR_ENABLED); + + 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 */ + b43_leds_init(dev); + + err = b43_upload_initvals(dev); + if (err) + goto err_leds_exit; + 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); + + if (b43_using_pio(dev)) { + b43_write32(dev, 0x0210, 0x00000100); + b43_write32(dev, 0x0230, 0x00000100); + b43_write32(dev, 0x0250, 0x00000100); + b43_write32(dev, 0x0270, 0x00000100); + b43_shm_write16(dev, B43_SHM_SHARED, 0x0034, 0x0000); + } + + /* 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_leds_exit: + b43_leds_exit(dev); + b43_gpio_cleanup(dev); + return err; +} + +static void b43_periodic_every120sec(struct b43_wldev *dev) +{ + struct b43_phy *phy = &dev->phy; + + if (phy->type != B43_PHYTYPE_G || phy->rev < 2) + return; + + b43_mac_suspend(dev); + b43_lo_g_measure(dev); + b43_mac_enable(dev); + if (b43_has_hardware_pctl(phy)) + b43_lo_g_ctl_mark_all_unused(dev); +} + +static void b43_periodic_every60sec(struct b43_wldev *dev) +{ + struct b43_phy *phy = &dev->phy; + + if (!b43_has_hardware_pctl(phy)) + b43_lo_g_ctl_mark_all_unused(dev); + if (dev->dev->bus->sprom.r1.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? + //TODO for APHY (temperature?) +} + +static void do_periodic_work(struct b43_wldev *dev) +{ + unsigned int state; + + state = dev->periodic_state; + if (state % 8 == 0) + b43_periodic_every120sec(dev); + 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(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); +} + +/* Validate access to the chip (SHM) */ +static int b43_validate_chipaccess(struct b43_wldev *dev) +{ + u32 value; + u32 shm_backup; + + shm_backup = b43_shm_read32(dev, B43_SHM_SHARED, 0); + 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, 0x55AAAA55); + if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55) + goto error; + b43_shm_write32(dev, B43_SHM_SHARED, 0, shm_backup); + + value = b43_read32(dev, B43_MMIO_MACCTL); + if ((value | B43_MACCTL_GMODE) != + (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED)) + goto error; + + value = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); + if (value) + 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_tx(struct ieee80211_hw *hw, + struct sk_buff *skb, struct ieee80211_tx_control *ctl) +{ + struct b43_wl *wl = hw_to_b43_wl(hw); + struct b43_wldev *dev = wl->current_dev; + int err = -ENODEV; + unsigned long flags; + + if (unlikely(!dev)) + goto out; + if (unlikely(b43_status(dev) < B43_STAT_STARTED)) + goto out; + /* DMA-TX is done without a global lock. */ + if (b43_using_pio(dev)) { + spin_lock_irqsave(&wl->irq_lock, flags); + err = b43_pio_tx(dev, skb, ctl); + spin_unlock_irqrestore(&wl->irq_lock, flags); + } else + err = b43_dma_tx(dev, skb, ctl); + out: + if (unlikely(err)) + return NETDEV_TX_BUSY; + return NETDEV_TX_OK; +} + +static int b43_conf_tx(struct ieee80211_hw *hw, + int queue, + const struct ieee80211_tx_queue_params *params) +{ + return 0; +} + +static int b43_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(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_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 const char *phymode_to_string(unsigned int phymode) +{ + switch (phymode) { + case B43_PHYMODE_A: + return "A"; + case B43_PHYMODE_B: + return "B"; + case B43_PHYMODE_G: + return "G"; + default: + B43_WARN_ON(1); + } + return ""; +} + +static int find_wldev_for_phymode(struct b43_wl *wl, + unsigned int phymode, + struct b43_wldev **dev, bool * gmode) +{ + struct b43_wldev *d; + + list_for_each_entry(d, &wl->devlist, list) { + if (d->phy.possible_phymodes & phymode) { + /* Ok, this device supports the PHY-mode. + * Now figure out how the gmode bit has to be + * set to support it. */ + if (phymode == B43_PHYMODE_A) + *gmode = 0; + else + *gmode = 1; + *dev = d; + + return 0; + } + } + + return -ESRCH; +} + +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); +} + +/* Expects wl->mutex locked */ +static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode) +{ + struct b43_wldev *up_dev; + struct b43_wldev *down_dev; + int err; + bool gmode = 0; + int prev_status; + + err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode); + if (err) { + b43err(wl, "Could not find a device for %s-PHY mode\n", + phymode_to_string(new_mode)); + return err; + } + if ((up_dev == wl->current_dev) && + (!!wl->current_dev->phy.gmode == !!gmode)) { + /* This device is already running. */ + return 0; + } + b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n", + phymode_to_string(new_mode)); + 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 " + "newly selected %s-PHY mode\n", + phymode_to_string(new_mode)); + 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 " + "newly selected %s-PHY mode\n", + phymode_to_string(new_mode)); + 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_antenna_from_ieee80211(u8 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; + default: + return B43_ANTENNA_DEFAULT; + } +} + +static int b43_dev_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; + unsigned int new_phymode = 0xFFFF; + int antenna_tx; + int antenna_rx; + int err = 0; + u32 savedirqs; + + antenna_tx = b43_antenna_from_ieee80211(conf->antenna_sel_tx); + antenna_rx = b43_antenna_from_ieee80211(conf->antenna_sel_rx); + + mutex_lock(&wl->mutex); + + /* Switch the PHY mode (if necessary). */ + switch (conf->phymode) { + case MODE_IEEE80211A: + new_phymode = B43_PHYMODE_A; + break; + case MODE_IEEE80211B: + new_phymode = B43_PHYMODE_B; + break; + case MODE_IEEE80211G: + new_phymode = B43_PHYMODE_G; + break; + default: + B43_WARN_ON(1); + } + err = b43_switch_phymode(wl, new_phymode); + 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_val != phy->channel) + b43_radio_selectchannel(dev, conf->channel_val, 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); + } + + /* 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. */ + b43_mgmtframe_txantenna(dev, antenna_tx); + b43_set_rx_antenna(dev, antenna_rx); + + /* 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_dev_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 = wl->current_dev; + unsigned long flags; + u8 algorithm; + u8 index; + int err = -EINVAL; + DECLARE_MAC_BUF(mac); + + if (modparam_nohwcrypt) + return -ENOSPC; /* User disabled HW-crypto */ + + if (!dev) + return -ENODEV; + 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; + } + + index = (u8) (key->keyidx); + if (index > 3) + goto out; + + mutex_lock(&wl->mutex); + spin_lock_irqsave(&wl->irq_lock, flags); + + if (b43_status(dev) < B43_STAT_INITIALIZED) { + err = -ENODEV; + 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); +out: + 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_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_config_interface(struct ieee80211_hw *hw, + int if_id, 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->if_id != if_id); + 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_refresh_templates(dev, 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; + b43_set_status(dev, B43_STAT_INITIALIZED); + + 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); + + ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy. + + /* Disable and sync interrupts. */ + 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); + + 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); + ieee80211_start_queues(dev->wl->hw); + + /* 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 > 8) + unsupported = 1; + break; + 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_HIGH); + tmp <<= 16; + b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); + tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW); + } + radio_manuf = (tmp & 0x00000FFF); + radio_ver = (tmp & 0x0FFFF000) >> 12; + radio_rev = (tmp & 0xF0000000) >> 28; + 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; + 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)); + + /* Flags */ + phy->locked = 0; + + 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->rebuild = 1; + lo->tx_bias = 0xFF; + } + 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; + + spin_lock_init(&phy->lock); + phy->interfmode = B43_INTERFMODE_NONE; + phy->channel = 0xFF; + + phy->hardware_power_control = !!modparam_hwpctl; +} + +static void setup_struct_wldev_for_init(struct b43_wldev *dev) +{ + /* Flags */ + dev->reg124_set_0x4 = 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; + u32 hf; + + if (!(sprom->r1.boardflags_lo & B43_BFL_BTCOEXIST)) + return; + if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode) + return; + + hf = b43_hf_read(dev); + if (sprom->r1.boardflags_lo & B43_BFL_BTCMOD) + hf |= B43_HF_BTCOEXALT; + else + hf |= B43_HF_BTCOEX; + b43_hf_write(dev, hf); + //TODO +} + +static void b43_bluetooth_coext_disable(struct b43_wldev *dev) +{ //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 */ +} + +/* Shutdown a wireless core */ +/* Locking: wl->mutex */ +static void b43_wireless_core_exit(struct b43_wldev *dev) +{ + struct b43_phy *phy = &dev->phy; + + B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED); + if (b43_status(dev) != B43_STAT_INITIALIZED) + return; + b43_set_status(dev, B43_STAT_UNINIT); + + mutex_unlock(&dev->wl->mutex); + b43_rfkill_exit(dev); + mutex_lock(&dev->wl->mutex); + + b43_rng_exit(dev->wl); + b43_pio_free(dev); + b43_dma_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; + 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; + u32 hf, 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->r1.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); + + /* Short/Long Retry Limit. + * The retry-limit is a 4-bit counter. Enforce this to avoid overflowing + * the chip-internal counter. + */ + tmp = limit_value(modparam_short_retry, 0, 0xF); + b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT, tmp); + tmp = limit_value(modparam_long_retry, 0, 0xF); + b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT, tmp); + + 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); + + /* 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); + + do { + if (b43_using_pio(dev)) { + err = b43_pio_init(dev); + } else { + err = b43_dma_init(dev); + if (!err) + b43_qos_init(dev); + } + } while (err == -EAGAIN); + if (err) + goto err_chip_exit; + +//FIXME +#if 1 + b43_write16(dev, 0x0612, 0x0050); + b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050); + b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4); +#endif + + b43_bluetooth_coext_enable(dev); + + ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */ + memset(wl->bssid, 0, ETH_ALEN); + memset(wl->mac_addr, 0, ETH_ALEN); + b43_upload_card_macaddress(dev); + b43_security_init(dev); + b43_rfkill_init(dev); + b43_rng_init(wl); + + b43_set_status(dev, B43_STAT_INITIALIZED); + + 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_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->if_id = conf->if_id; + 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_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_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->if_id != conf->if_id); + + 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_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; + + mutex_lock(&wl->mutex); + + if (b43_status(dev) < B43_STAT_INITIALIZED) { + err = b43_wireless_core_init(dev); + if (err) + goto out_mutex_unlock; + did_init = 1; + } + + if (b43_status(dev) < B43_STAT_STARTED) { + err = b43_wireless_core_start(dev); + if (err) { + if (did_init) + b43_wireless_core_exit(dev); + goto out_mutex_unlock; + } + } + + out_mutex_unlock: + mutex_unlock(&wl->mutex); + + return err; +} + +void b43_stop(struct ieee80211_hw *hw) +{ + struct b43_wl *wl = hw_to_b43_wl(hw); + struct b43_wldev *dev = wl->current_dev; + + 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 const struct ieee80211_ops b43_hw_ops = { + .tx = b43_tx, + .conf_tx = b43_conf_tx, + .add_interface = b43_add_interface, + .remove_interface = b43_remove_interface, + .config = b43_dev_config, + .config_interface = b43_config_interface, + .configure_filter = b43_configure_filter, + .set_key = b43_dev_set_key, + .get_stats = b43_get_stats, + .get_tx_stats = b43_get_tx_stats, + .start = b43_start, + .stop = b43_stop, +}; + +/* 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_modes(struct b43_wldev *dev, + int have_aphy, int have_bphy, int have_gphy) +{ + struct ieee80211_hw *hw = dev->wl->hw; + struct ieee80211_hw_mode *mode; + struct b43_phy *phy = &dev->phy; + int cnt = 0; + int err; + +/*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */ + have_aphy = 0; + + phy->possible_phymodes = 0; + for (; 1; cnt++) { + if (have_aphy) { + B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); + mode = &phy->hwmodes[cnt]; + + mode->mode = MODE_IEEE80211A; + mode->num_channels = b43_a_chantable_size; + mode->channels = b43_a_chantable; + mode->num_rates = b43_a_ratetable_size; + mode->rates = b43_a_ratetable; + err = ieee80211_register_hwmode(hw, mode); + if (err) + return err; + + phy->possible_phymodes |= B43_PHYMODE_A; + have_aphy = 0; + continue; + } + if (have_bphy) { + B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); + mode = &phy->hwmodes[cnt]; + + mode->mode = MODE_IEEE80211B; + mode->num_channels = b43_bg_chantable_size; + mode->channels = b43_bg_chantable; + mode->num_rates = b43_b_ratetable_size; + mode->rates = b43_b_ratetable; + err = ieee80211_register_hwmode(hw, mode); + if (err) + return err; + + phy->possible_phymodes |= B43_PHYMODE_B; + have_bphy = 0; + continue; + } + if (have_gphy) { + B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); + mode = &phy->hwmodes[cnt]; + + mode->mode = MODE_IEEE80211G; + mode->num_channels = b43_bg_chantable_size; + mode->channels = b43_bg_chantable; + mode->num_rates = b43_g_ratetable_size; + mode->rates = b43_g_ratetable; + err = ieee80211_register_hwmode(hw, mode); + if (err) + return err; + + phy->possible_phymodes |= B43_PHYMODE_G; + have_gphy = 0; + continue; + } + break; + } + + return 0; +} + +static void b43_wireless_core_detach(struct b43_wldev *dev) +{ + b43_rfkill_free(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; + int have_aphy = 0, have_bphy = 0, have_gphy = 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_aphy = !!(tmshigh & B43_TMSHIGH_APHY); + have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY); + if (!have_aphy && !have_gphy) + have_bphy = 1; + } else if (dev->dev->id.revision == 4) { + have_gphy = 1; + have_aphy = 1; + } else + have_bphy = 1; + + dev->phy.gmode = (have_gphy || have_bphy); + 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_aphy = 0; + have_bphy = 0; + have_gphy = 0; + switch (dev->phy.type) { + case B43_PHYTYPE_A: + have_aphy = 1; + break; + case B43_PHYTYPE_B: + have_bphy = 1; + break; + case B43_PHYTYPE_G: + have_gphy = 1; + break; + default: + B43_WARN_ON(1); + } + } + dev->phy.gmode = (have_gphy || have_bphy); + 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_modes(dev, have_aphy, have_bphy, have_gphy); + 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_rfkill_alloc(dev); + + 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); + if (modparam_pio) + wldev->__using_pio = 1; + 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; +} + +static void b43_sprom_fixup(struct ssb_bus *bus) +{ + /* boardflags workarounds */ + if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL && + bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74) + bus->sprom.r1.boardflags_lo |= B43_BFL_BTCOEXIST; + if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && + bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40) + bus->sprom.r1.boardflags_lo |= B43_BFL_PACTRL; + + /* Handle case when gain is not set in sprom */ + if (bus->sprom.r1.antenna_gain_a == 0xFF) + bus->sprom.r1.antenna_gain_a = 2; + if (bus->sprom.r1.antenna_gain_bg == 0xFF) + bus->sprom.r1.antenna_gain_bg = 2; + + /* Convert Antennagain values to Q5.2 */ + bus->sprom.r1.antenna_gain_a <<= 2; + bus->sprom.r1.antenna_gain_bg <<= 2; +} + +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; + hw->max_signal = 100; + hw->max_rssi = -110; + hw->max_noise = -110; + hw->queues = 1; /* FIXME: hardware has more queues */ + SET_IEEE80211_DEV(hw, dev->dev); + if (is_valid_ether_addr(sprom->r1.et1mac)) + SET_IEEE80211_PERM_ADDR(hw, sprom->r1.et1mac); + else + SET_IEEE80211_PERM_ADDR(hw, sprom->r1.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); + spin_lock_init(&wl->leds_lock); + mutex_init(&wl->mutex); + INIT_LIST_HEAD(&wl->devlist); + + 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_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_wireless_core_exit(wldev); + b43err(wl, "Resume failed at core start\n"); + goto out; + } + } + mutex_unlock(&wl->mutex); + + b43dbg(wl, "Device resumed.\n"); + out: + 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 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; + + 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) |