diff options
Diffstat (limited to 'drivers/net/wireless/b43legacy/main.c')
-rw-r--r-- | drivers/net/wireless/b43legacy/main.c | 4059 |
1 files changed, 0 insertions, 4059 deletions
diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c deleted file mode 100644 index 8491b6f4d..000000000 --- a/drivers/net/wireless/b43legacy/main.c +++ /dev/null @@ -1,4059 +0,0 @@ -/* - * - * Broadcom B43legacy wireless driver - * - * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> - * Copyright (c) 2005-2008 Stefano Brivio <stefano.brivio@polimi.it> - * Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch> - * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> - * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> - * Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> - * - * 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/module.h> -#include <linux/if_arp.h> -#include <linux/etherdevice.h> -#include <linux/firmware.h> -#include <linux/workqueue.h> -#include <linux/sched.h> -#include <linux/skbuff.h> -#include <linux/dma-mapping.h> -#include <linux/slab.h> -#include <net/dst.h> -#include <asm/unaligned.h> - -#include "b43legacy.h" -#include "main.h" -#include "debugfs.h" -#include "phy.h" -#include "dma.h" -#include "pio.h" -#include "sysfs.h" -#include "xmit.h" -#include "radio.h" - - -MODULE_DESCRIPTION("Broadcom B43legacy wireless driver"); -MODULE_AUTHOR("Martin Langer"); -MODULE_AUTHOR("Stefano Brivio"); -MODULE_AUTHOR("Michael Buesch"); -MODULE_LICENSE("GPL"); - -/*(DEBLOBBED)*/ - -#if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_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_B43LEGACY_DMA) -# define modparam_pio 0 -#elif defined(CONFIG_B43LEGACY_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 char modparam_fwpostfix[16]; -module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444); -MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load."); - -/* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */ -static const struct ssb_device_id b43legacy_ssb_tbl[] = { - SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 2), - SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 4), - {}, -}; -MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl); - - -/* Channel and ratetables are shared for all devices. - * They can't be const, because ieee80211 puts some precalculated - * data in there. This data is the same for all devices, so we don't - * get concurrency issues */ -#define RATETAB_ENT(_rateid, _flags) \ - { \ - .bitrate = B43legacy_RATE_TO_100KBPS(_rateid), \ - .hw_value = (_rateid), \ - .flags = (_flags), \ - } -/* - * NOTE: When changing this, sync with xmit.c's - * b43legacy_plcp_get_bitrate_idx_* functions! - */ -static struct ieee80211_rate __b43legacy_ratetable[] = { - RATETAB_ENT(B43legacy_CCK_RATE_1MB, 0), - RATETAB_ENT(B43legacy_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE), - RATETAB_ENT(B43legacy_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE), - RATETAB_ENT(B43legacy_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE), - RATETAB_ENT(B43legacy_OFDM_RATE_6MB, 0), - RATETAB_ENT(B43legacy_OFDM_RATE_9MB, 0), - RATETAB_ENT(B43legacy_OFDM_RATE_12MB, 0), - RATETAB_ENT(B43legacy_OFDM_RATE_18MB, 0), - RATETAB_ENT(B43legacy_OFDM_RATE_24MB, 0), - RATETAB_ENT(B43legacy_OFDM_RATE_36MB, 0), - RATETAB_ENT(B43legacy_OFDM_RATE_48MB, 0), - RATETAB_ENT(B43legacy_OFDM_RATE_54MB, 0), -}; -#define b43legacy_b_ratetable (__b43legacy_ratetable + 0) -#define b43legacy_b_ratetable_size 4 -#define b43legacy_g_ratetable (__b43legacy_ratetable + 0) -#define b43legacy_g_ratetable_size 12 - -#define CHANTAB_ENT(_chanid, _freq) \ - { \ - .center_freq = (_freq), \ - .hw_value = (_chanid), \ - } -static struct ieee80211_channel b43legacy_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), -}; - -static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = { - .channels = b43legacy_bg_chantable, - .n_channels = ARRAY_SIZE(b43legacy_bg_chantable), - .bitrates = b43legacy_b_ratetable, - .n_bitrates = b43legacy_b_ratetable_size, -}; - -static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = { - .channels = b43legacy_bg_chantable, - .n_channels = ARRAY_SIZE(b43legacy_bg_chantable), - .bitrates = b43legacy_g_ratetable, - .n_bitrates = b43legacy_g_ratetable_size, -}; - -static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev); -static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev); -static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev); -static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev); - - -static int b43legacy_ratelimit(struct b43legacy_wl *wl) -{ - if (!wl || !wl->current_dev) - return 1; - if (b43legacy_status(wl->current_dev) < B43legacy_STAT_STARTED) - return 1; - /* We are up and running. - * Ratelimit the messages to avoid DoS over the net. */ - return net_ratelimit(); -} - -void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...) -{ - struct va_format vaf; - va_list args; - - if (!b43legacy_ratelimit(wl)) - return; - - va_start(args, fmt); - - vaf.fmt = fmt; - vaf.va = &args; - - printk(KERN_INFO "b43legacy-%s: %pV", - (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); - - va_end(args); -} - -void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...) -{ - struct va_format vaf; - va_list args; - - if (!b43legacy_ratelimit(wl)) - return; - - va_start(args, fmt); - - vaf.fmt = fmt; - vaf.va = &args; - - printk(KERN_ERR "b43legacy-%s ERROR: %pV", - (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); - - va_end(args); -} - -void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...) -{ - struct va_format vaf; - va_list args; - - if (!b43legacy_ratelimit(wl)) - return; - - va_start(args, fmt); - - vaf.fmt = fmt; - vaf.va = &args; - - printk(KERN_WARNING "b43legacy-%s warning: %pV", - (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); - - va_end(args); -} - -#if B43legacy_DEBUG -void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...) -{ - struct va_format vaf; - va_list args; - - va_start(args, fmt); - - vaf.fmt = fmt; - vaf.va = &args; - - printk(KERN_DEBUG "b43legacy-%s debug: %pV", - (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); - - va_end(args); -} -#endif /* DEBUG */ - -static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset, - u32 val) -{ - u32 status; - - B43legacy_WARN_ON(offset % 4 != 0); - - status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - if (status & B43legacy_MACCTL_BE) - val = swab32(val); - - b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset); - mmiowb(); - b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val); -} - -static inline -void b43legacy_shm_control_word(struct b43legacy_wldev *dev, - u16 routing, u16 offset) -{ - u32 control; - - /* "offset" is the WORD offset. */ - - control = routing; - control <<= 16; - control |= offset; - b43legacy_write32(dev, B43legacy_MMIO_SHM_CONTROL, control); -} - -u32 b43legacy_shm_read32(struct b43legacy_wldev *dev, - u16 routing, u16 offset) -{ - u32 ret; - - if (routing == B43legacy_SHM_SHARED) { - B43legacy_WARN_ON((offset & 0x0001) != 0); - if (offset & 0x0003) { - /* Unaligned access */ - b43legacy_shm_control_word(dev, routing, offset >> 2); - ret = b43legacy_read16(dev, - B43legacy_MMIO_SHM_DATA_UNALIGNED); - ret <<= 16; - b43legacy_shm_control_word(dev, routing, - (offset >> 2) + 1); - ret |= b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA); - - return ret; - } - offset >>= 2; - } - b43legacy_shm_control_word(dev, routing, offset); - ret = b43legacy_read32(dev, B43legacy_MMIO_SHM_DATA); - - return ret; -} - -u16 b43legacy_shm_read16(struct b43legacy_wldev *dev, - u16 routing, u16 offset) -{ - u16 ret; - - if (routing == B43legacy_SHM_SHARED) { - B43legacy_WARN_ON((offset & 0x0001) != 0); - if (offset & 0x0003) { - /* Unaligned access */ - b43legacy_shm_control_word(dev, routing, offset >> 2); - ret = b43legacy_read16(dev, - B43legacy_MMIO_SHM_DATA_UNALIGNED); - - return ret; - } - offset >>= 2; - } - b43legacy_shm_control_word(dev, routing, offset); - ret = b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA); - - return ret; -} - -void b43legacy_shm_write32(struct b43legacy_wldev *dev, - u16 routing, u16 offset, - u32 value) -{ - if (routing == B43legacy_SHM_SHARED) { - B43legacy_WARN_ON((offset & 0x0001) != 0); - if (offset & 0x0003) { - /* Unaligned access */ - b43legacy_shm_control_word(dev, routing, offset >> 2); - mmiowb(); - b43legacy_write16(dev, - B43legacy_MMIO_SHM_DATA_UNALIGNED, - (value >> 16) & 0xffff); - mmiowb(); - b43legacy_shm_control_word(dev, routing, - (offset >> 2) + 1); - mmiowb(); - b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, - value & 0xffff); - return; - } - offset >>= 2; - } - b43legacy_shm_control_word(dev, routing, offset); - mmiowb(); - b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value); -} - -void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset, - u16 value) -{ - if (routing == B43legacy_SHM_SHARED) { - B43legacy_WARN_ON((offset & 0x0001) != 0); - if (offset & 0x0003) { - /* Unaligned access */ - b43legacy_shm_control_word(dev, routing, offset >> 2); - mmiowb(); - b43legacy_write16(dev, - B43legacy_MMIO_SHM_DATA_UNALIGNED, - value); - return; - } - offset >>= 2; - } - b43legacy_shm_control_word(dev, routing, offset); - mmiowb(); - b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value); -} - -/* Read HostFlags */ -u32 b43legacy_hf_read(struct b43legacy_wldev *dev) -{ - u32 ret; - - ret = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_HOSTFHI); - ret <<= 16; - ret |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_HOSTFLO); - - return ret; -} - -/* Write HostFlags */ -void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value) -{ - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_HOSTFLO, - (value & 0x0000FFFF)); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_HOSTFHI, - ((value & 0xFFFF0000) >> 16)); -} - -void b43legacy_tsf_read(struct b43legacy_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; - u32 high; - u32 high2; - - do { - high = b43legacy_read32(dev, - B43legacy_MMIO_REV3PLUS_TSF_HIGH); - low = b43legacy_read32(dev, - B43legacy_MMIO_REV3PLUS_TSF_LOW); - high2 = b43legacy_read32(dev, - B43legacy_MMIO_REV3PLUS_TSF_HIGH); - } while (unlikely(high != high2)); - - *tsf = high; - *tsf <<= 32; - *tsf |= low; - } else { - u64 tmp; - u16 v0; - u16 v1; - u16 v2; - u16 v3; - u16 test1; - u16 test2; - u16 test3; - - do { - v3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3); - v2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2); - v1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1); - v0 = b43legacy_read16(dev, B43legacy_MMIO_TSF_0); - - test3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3); - test2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2); - test1 = b43legacy_read16(dev, B43legacy_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 b43legacy_time_lock(struct b43legacy_wldev *dev) -{ - u32 status; - - status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - status |= B43legacy_MACCTL_TBTTHOLD; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); - mmiowb(); -} - -static void b43legacy_time_unlock(struct b43legacy_wldev *dev) -{ - u32 status; - - status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - status &= ~B43legacy_MACCTL_TBTTHOLD; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); -} - -static void b43legacy_tsf_write_locked(struct b43legacy_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; - - b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0); - mmiowb(); - b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH, - hi); - mmiowb(); - b43legacy_write32(dev, B43legacy_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; - - b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0); - mmiowb(); - b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3); - mmiowb(); - b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2); - mmiowb(); - b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1); - mmiowb(); - b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0); - } -} - -void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf) -{ - b43legacy_time_lock(dev); - b43legacy_tsf_write_locked(dev, tsf); - b43legacy_time_unlock(dev); -} - -static -void b43legacy_macfilter_set(struct b43legacy_wldev *dev, - u16 offset, const u8 *mac) -{ - static const u8 zero_addr[ETH_ALEN] = { 0 }; - u16 data; - - if (!mac) - mac = zero_addr; - - offset |= 0x0020; - b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_CONTROL, offset); - - data = mac[0]; - data |= mac[1] << 8; - b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); - data = mac[2]; - data |= mac[3] << 8; - b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); - data = mac[4]; - data |= mac[5] << 8; - b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); -} - -static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev) -{ - static const u8 zero_addr[ETH_ALEN] = { 0 }; - const u8 *mac = dev->wl->mac_addr; - const u8 *bssid = dev->wl->bssid; - u8 mac_bssid[ETH_ALEN * 2]; - int i; - u32 tmp; - - if (!bssid) - bssid = zero_addr; - if (!mac) - mac = zero_addr; - - b43legacy_macfilter_set(dev, B43legacy_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; - b43legacy_ram_write(dev, 0x20 + i, tmp); - b43legacy_ram_write(dev, 0x78 + i, tmp); - b43legacy_ram_write(dev, 0x478 + i, tmp); - } -} - -static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev) -{ - b43legacy_write_mac_bssid_templates(dev); - b43legacy_macfilter_set(dev, B43legacy_MACFILTER_SELF, - dev->wl->mac_addr); -} - -static void b43legacy_set_slot_time(struct b43legacy_wldev *dev, - u16 slot_time) -{ - /* slot_time is in usec. */ - if (dev->phy.type != B43legacy_PHYTYPE_G) - return; - b43legacy_write16(dev, 0x684, 510 + slot_time); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0010, - slot_time); -} - -static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev) -{ - b43legacy_set_slot_time(dev, 9); -} - -static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev) -{ - b43legacy_set_slot_time(dev, 20); -} - -/* Synchronize IRQ top- and bottom-half. - * IRQs must be masked before calling this. - * This must not be called with the irq_lock held. - */ -static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev) -{ - synchronize_irq(dev->dev->irq); - tasklet_kill(&dev->isr_tasklet); -} - -/* DummyTransmission function, as documented on - * http://bcm-specs.sipsolutions.net/DummyTransmission - */ -void b43legacy_dummy_transmission(struct b43legacy_wldev *dev) -{ - struct b43legacy_phy *phy = &dev->phy; - unsigned int i; - unsigned int max_loop; - u16 value; - u32 buffer[5] = { - 0x00000000, - 0x00D40000, - 0x00000000, - 0x01000000, - 0x00000000, - }; - - switch (phy->type) { - case B43legacy_PHYTYPE_B: - case B43legacy_PHYTYPE_G: - max_loop = 0xFA; - buffer[0] = 0x000B846E; - break; - default: - B43legacy_BUG_ON(1); - return; - } - - for (i = 0; i < 5; i++) - b43legacy_ram_write(dev, i * 4, buffer[i]); - - /* dummy read follows */ - b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - - b43legacy_write16(dev, 0x0568, 0x0000); - b43legacy_write16(dev, 0x07C0, 0x0000); - b43legacy_write16(dev, 0x050C, 0x0000); - b43legacy_write16(dev, 0x0508, 0x0000); - b43legacy_write16(dev, 0x050A, 0x0000); - b43legacy_write16(dev, 0x054C, 0x0000); - b43legacy_write16(dev, 0x056A, 0x0014); - b43legacy_write16(dev, 0x0568, 0x0826); - b43legacy_write16(dev, 0x0500, 0x0000); - b43legacy_write16(dev, 0x0502, 0x0030); - - if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) - b43legacy_radio_write16(dev, 0x0051, 0x0017); - for (i = 0x00; i < max_loop; i++) { - value = b43legacy_read16(dev, 0x050E); - if (value & 0x0080) - break; - udelay(10); - } - for (i = 0x00; i < 0x0A; i++) { - value = b43legacy_read16(dev, 0x050E); - if (value & 0x0400) - break; - udelay(10); - } - for (i = 0x00; i < 0x0A; i++) { - value = b43legacy_read16(dev, 0x0690); - if (!(value & 0x0100)) - break; - udelay(10); - } - if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) - b43legacy_radio_write16(dev, 0x0051, 0x0037); -} - -/* Turn the Analog ON/OFF */ -static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on) -{ - b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4); -} - -void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags) -{ - u32 tmslow; - u32 macctl; - - flags |= B43legacy_TMSLOW_PHYCLKEN; - flags |= B43legacy_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 &= ~B43legacy_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 */ - b43legacy_switch_analog(dev, 1); - - macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - macctl &= ~B43legacy_MACCTL_GMODE; - if (flags & B43legacy_TMSLOW_GMODE) { - macctl |= B43legacy_MACCTL_GMODE; - dev->phy.gmode = true; - } else - dev->phy.gmode = false; - macctl |= B43legacy_MACCTL_IHR_ENABLED; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); -} - -static void handle_irq_transmit_status(struct b43legacy_wldev *dev) -{ - u32 v0; - u32 v1; - u16 tmp; - struct b43legacy_txstatus stat; - - while (1) { - v0 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0); - if (!(v0 & 0x00000001)) - break; - v1 = b43legacy_read32(dev, B43legacy_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); - - b43legacy_handle_txstatus(dev, &stat); - } -} - -static void drain_txstatus_queue(struct b43legacy_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 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0); - if (!(dummy & 0x00000001)) - break; - dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1); - } -} - -static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev) -{ - u32 val = 0; - - val = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x40A); - val <<= 16; - val |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x408); - - return val; -} - -static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi) -{ - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x408, - (jssi & 0x0000FFFF)); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x40A, - (jssi & 0xFFFF0000) >> 16); -} - -static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev) -{ - b43legacy_jssi_write(dev, 0x7F7F7F7F); - b43legacy_write32(dev, B43legacy_MMIO_MACCMD, - b43legacy_read32(dev, B43legacy_MMIO_MACCMD) - | B43legacy_MACCMD_BGNOISE); - B43legacy_WARN_ON(dev->noisecalc.channel_at_start != - dev->phy.channel); -} - -static void b43legacy_calculate_link_quality(struct b43legacy_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 = true; - dev->noisecalc.nr_samples = 0; - - b43legacy_generate_noise_sample(dev); -} - -static void handle_irq_noise(struct b43legacy_wldev *dev) -{ - struct b43legacy_phy *phy = &dev->phy; - u16 tmp; - u8 noise[4]; - u8 i; - u8 j; - s32 average; - - /* Bottom half of Link Quality calculation. */ - - B43legacy_WARN_ON(!dev->noisecalc.calculation_running); - if (dev->noisecalc.channel_at_start != phy->channel) - goto drop_calculation; - *((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev)); - if (noise[0] == 0x7F || noise[1] == 0x7F || - noise[2] == 0x7F || noise[3] == 0x7F) - goto generate_new; - - /* Get the noise samples. */ - B43legacy_WARN_ON(dev->noisecalc.nr_samples >= 8); - i = dev->noisecalc.nr_samples; - noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); - noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); - noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); - noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); - dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]]; - dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]]; - dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]]; - dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]]; - dev->noisecalc.nr_samples++; - if (dev->noisecalc.nr_samples == 8) { - /* Calculate the Link Quality by the noise samples. */ - average = 0; - for (i = 0; i < 8; i++) { - for (j = 0; j < 4; j++) - average += dev->noisecalc.samples[i][j]; - } - average /= (8 * 4); - average *= 125; - average += 64; - average /= 128; - tmp = b43legacy_shm_read16(dev, B43legacy_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 = false; - return; - } -generate_new: - b43legacy_generate_noise_sample(dev); -} - -static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev) -{ - if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) { - /* TODO: PS TBTT */ - } else { - if (1/*FIXME: the last PSpoll frame was sent successfully */) - b43legacy_power_saving_ctl_bits(dev, -1, -1); - } - if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) - dev->dfq_valid = true; -} - -static void handle_irq_atim_end(struct b43legacy_wldev *dev) -{ - if (dev->dfq_valid) { - b43legacy_write32(dev, B43legacy_MMIO_MACCMD, - b43legacy_read32(dev, B43legacy_MMIO_MACCMD) - | B43legacy_MACCMD_DFQ_VALID); - dev->dfq_valid = false; - } -} - -static void handle_irq_pmq(struct b43legacy_wldev *dev) -{ - u32 tmp; - - /* TODO: AP mode. */ - - while (1) { - tmp = b43legacy_read32(dev, B43legacy_MMIO_PS_STATUS); - if (!(tmp & 0x00000008)) - break; - } - /* 16bit write is odd, but correct. */ - b43legacy_write16(dev, B43legacy_MMIO_PS_STATUS, 0x0002); -} - -static void b43legacy_write_template_common(struct b43legacy_wldev *dev, - const u8 *data, u16 size, - u16 ram_offset, - u16 shm_size_offset, u8 rate) -{ - u32 i; - u32 tmp; - struct b43legacy_plcp_hdr4 plcp; - - plcp.data = 0; - b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); - b43legacy_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; - b43legacy_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; - b43legacy_ram_write(dev, ram_offset + i - 2, tmp); - } - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_size_offset, - size + sizeof(struct b43legacy_plcp_hdr6)); -} - -/* Convert a b43legacy antenna number value to the PHY TX control value. */ -static u16 b43legacy_antenna_to_phyctl(int antenna) -{ - switch (antenna) { - case B43legacy_ANTENNA0: - return B43legacy_TX4_PHY_ANT0; - case B43legacy_ANTENNA1: - return B43legacy_TX4_PHY_ANT1; - } - return B43legacy_TX4_PHY_ANTLAST; -} - -static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev, - u16 ram_offset, - u16 shm_size_offset) -{ - - unsigned int i, len, variable_len; - const struct ieee80211_mgmt *bcn; - const u8 *ie; - bool tim_found = false; - unsigned int rate; - u16 ctl; - int antenna; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon); - - bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data); - len = min_t(size_t, dev->wl->current_beacon->len, - 0x200 - sizeof(struct b43legacy_plcp_hdr6)); - rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value; - - b43legacy_write_template_common(dev, (const u8 *)bcn, len, ram_offset, - shm_size_offset, rate); - - /* Write the PHY TX control parameters. */ - antenna = B43legacy_ANTENNA_DEFAULT; - antenna = b43legacy_antenna_to_phyctl(antenna); - ctl = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_BEACPHYCTL); - /* We can't send beacons with short preamble. Would get PHY errors. */ - ctl &= ~B43legacy_TX4_PHY_SHORTPRMBL; - ctl &= ~B43legacy_TX4_PHY_ANT; - ctl &= ~B43legacy_TX4_PHY_ENC; - ctl |= antenna; - ctl |= B43legacy_TX4_PHY_ENC_CCK; - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_BEACPHYCTL, ctl); - - /* Find the position of the TIM and the DTIM_period value - * and write them to SHM. */ - ie = bcn->u.beacon.variable; - variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable); - for (i = 0; i < variable_len - 2; ) { - uint8_t ie_id, ie_len; - - ie_id = ie[i]; - ie_len = ie[i + 1]; - if (ie_id == 5) { - u16 tim_position; - u16 dtim_period; - /* This is the TIM Information Element */ - - /* Check whether the ie_len is in the beacon data range. */ - if (variable_len < ie_len + 2 + i) - break; - /* A valid TIM is at least 4 bytes long. */ - if (ie_len < 4) - break; - tim_found = true; - - tim_position = sizeof(struct b43legacy_plcp_hdr6); - tim_position += offsetof(struct ieee80211_mgmt, - u.beacon.variable); - tim_position += i; - - dtim_period = ie[i + 3]; - - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_TIMPOS, tim_position); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_DTIMP, dtim_period); - break; - } - i += ie_len + 2; - } - if (!tim_found) { - b43legacywarn(dev->wl, "Did not find a valid TIM IE in the " - "beacon template packet. AP or IBSS operation " - "may be broken.\n"); - } else - b43legacydbg(dev->wl, "Updated beacon template\n"); -} - -static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev, - u16 shm_offset, u16 size, - struct ieee80211_rate *rate) -{ - struct b43legacy_plcp_hdr4 plcp; - u32 tmp; - __le16 dur; - - plcp.data = 0; - b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value); - dur = ieee80211_generic_frame_duration(dev->wl->hw, - dev->wl->vif, - IEEE80211_BAND_2GHZ, - size, - rate); - /* Write PLCP in two parts and timing for packet transfer */ - tmp = le32_to_cpu(plcp.data); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset, - tmp & 0xFFFF); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 2, - tmp >> 16); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 6, - le16_to_cpu(dur)); -} - -/* Instead of using custom probe response template, this function - * just patches custom beacon template by: - * 1) Changing packet type - * 2) Patching duration field - * 3) Stripping TIM - */ -static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev, - u16 *dest_size, - struct ieee80211_rate *rate) -{ - const u8 *src_data; - u8 *dest_data; - u16 src_size, elem_size, src_pos, dest_pos; - __le16 dur; - struct ieee80211_hdr *hdr; - size_t ie_start; - - src_size = dev->wl->current_beacon->len; - src_data = (const u8 *)dev->wl->current_beacon->data; - - /* Get the start offset of the variable IEs in the packet. */ - ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); - B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, - u.beacon.variable)); - - if (B43legacy_WARN_ON(src_size < ie_start)) - return NULL; - - dest_data = kmalloc(src_size, GFP_ATOMIC); - if (unlikely(!dest_data)) - return NULL; - - /* Copy the static data and all Information Elements, except the TIM. */ - memcpy(dest_data, src_data, ie_start); - src_pos = ie_start; - dest_pos = ie_start; - for ( ; src_pos < src_size - 2; src_pos += elem_size) { - elem_size = src_data[src_pos + 1] + 2; - if (src_data[src_pos] == 5) { - /* This is the TIM. */ - continue; - } - memcpy(dest_data + dest_pos, src_data + src_pos, elem_size); - dest_pos += elem_size; - } - *dest_size = dest_pos; - hdr = (struct ieee80211_hdr *)dest_data; - - /* Set the frame control. */ - hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | - IEEE80211_STYPE_PROBE_RESP); - dur = ieee80211_generic_frame_duration(dev->wl->hw, - dev->wl->vif, - IEEE80211_BAND_2GHZ, - *dest_size, - rate); - hdr->duration_id = dur; - - return dest_data; -} - -static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev, - u16 ram_offset, - u16 shm_size_offset, - struct ieee80211_rate *rate) -{ - const u8 *probe_resp_data; - u16 size; - - size = dev->wl->current_beacon->len; - probe_resp_data = b43legacy_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 - */ - b43legacy_write_probe_resp_plcp(dev, 0x31A, size, - &b43legacy_b_ratetable[0]); - b43legacy_write_probe_resp_plcp(dev, 0x32C, size, - &b43legacy_b_ratetable[1]); - b43legacy_write_probe_resp_plcp(dev, 0x33E, size, - &b43legacy_b_ratetable[2]); - b43legacy_write_probe_resp_plcp(dev, 0x350, size, - &b43legacy_b_ratetable[3]); - - size = min_t(size_t, size, - 0x200 - sizeof(struct b43legacy_plcp_hdr6)); - b43legacy_write_template_common(dev, probe_resp_data, - size, ram_offset, - shm_size_offset, rate->hw_value); - kfree(probe_resp_data); -} - -static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev) -{ - struct b43legacy_wl *wl = dev->wl; - - if (wl->beacon0_uploaded) - return; - b43legacy_write_beacon_template(dev, 0x68, 0x18); - /* FIXME: Probe resp upload doesn't really belong here, - * but we don't use that feature anyway. */ - b43legacy_write_probe_resp_template(dev, 0x268, 0x4A, - &__b43legacy_ratetable[3]); - wl->beacon0_uploaded = true; -} - -static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev) -{ - struct b43legacy_wl *wl = dev->wl; - - if (wl->beacon1_uploaded) - return; - b43legacy_write_beacon_template(dev, 0x468, 0x1A); - wl->beacon1_uploaded = true; -} - -static void handle_irq_beacon(struct b43legacy_wldev *dev) -{ - struct b43legacy_wl *wl = dev->wl; - u32 cmd, beacon0_valid, beacon1_valid; - - if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) - return; - - /* This is the bottom half of the asynchronous beacon update. */ - - /* Ignore interrupt in the future. */ - dev->irq_mask &= ~B43legacy_IRQ_BEACON; - - cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); - beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID); - beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID); - - /* Schedule interrupt manually, if busy. */ - if (beacon0_valid && beacon1_valid) { - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, B43legacy_IRQ_BEACON); - dev->irq_mask |= B43legacy_IRQ_BEACON; - return; - } - - if (unlikely(wl->beacon_templates_virgin)) { - /* We never uploaded a beacon before. - * Upload both templates now, but only mark one valid. */ - wl->beacon_templates_virgin = false; - b43legacy_upload_beacon0(dev); - b43legacy_upload_beacon1(dev); - cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); - cmd |= B43legacy_MACCMD_BEACON0_VALID; - b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); - } else { - if (!beacon0_valid) { - b43legacy_upload_beacon0(dev); - cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); - cmd |= B43legacy_MACCMD_BEACON0_VALID; - b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); - } else if (!beacon1_valid) { - b43legacy_upload_beacon1(dev); - cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); - cmd |= B43legacy_MACCMD_BEACON1_VALID; - b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); - } - } -} - -static void b43legacy_beacon_update_trigger_work(struct work_struct *work) -{ - struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl, - beacon_update_trigger); - struct b43legacy_wldev *dev; - - mutex_lock(&wl->mutex); - dev = wl->current_dev; - if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) { - spin_lock_irq(&wl->irq_lock); - /* Update beacon right away or defer to IRQ. */ - handle_irq_beacon(dev); - /* The handler might have updated the IRQ mask. */ - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, - dev->irq_mask); - mmiowb(); - spin_unlock_irq(&wl->irq_lock); - } - mutex_unlock(&wl->mutex); -} - -/* Asynchronously update the packet templates in template RAM. - * Locking: Requires wl->irq_lock to be locked. */ -static void b43legacy_update_templates(struct b43legacy_wl *wl) -{ - struct sk_buff *beacon; - /* This is the top half of the ansynchronous beacon update. The bottom - * half is the beacon IRQ. Beacon update must be asynchronous to avoid - * sending an invalid beacon. This can happen for example, if the - * firmware transmits a beacon while we are updating it. */ - - /* We could modify the existing beacon and set the aid bit in the TIM - * field, but that would probably require resizing and moving of data - * within the beacon template. Simply request a new beacon and let - * mac80211 do the hard work. */ - beacon = ieee80211_beacon_get(wl->hw, wl->vif); - if (unlikely(!beacon)) - return; - - if (wl->current_beacon) - dev_kfree_skb_any(wl->current_beacon); - wl->current_beacon = beacon; - wl->beacon0_uploaded = false; - wl->beacon1_uploaded = false; - ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger); -} - -static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev, - u16 beacon_int) -{ - b43legacy_time_lock(dev); - if (dev->dev->id.revision >= 3) { - b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_REP, - (beacon_int << 16)); - b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_START, - (beacon_int << 10)); - } else { - b43legacy_write16(dev, 0x606, (beacon_int >> 6)); - b43legacy_write16(dev, 0x610, beacon_int); - } - b43legacy_time_unlock(dev); - b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int); -} - -static void handle_irq_ucode_debug(struct b43legacy_wldev *dev) -{ -} - -/* Interrupt handler bottom-half */ -static void b43legacy_interrupt_tasklet(struct b43legacy_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); - - B43legacy_WARN_ON(b43legacy_status(dev) < - B43legacy_STAT_INITIALIZED); - - 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 & B43legacy_IRQ_MAC_TXERR)) - b43legacyerr(dev->wl, "MAC transmission error\n"); - - if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) { - b43legacyerr(dev->wl, "PHY transmission error\n"); - rmb(); - if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) { - b43legacyerr(dev->wl, "Too many PHY TX errors, " - "restarting the controller\n"); - b43legacy_controller_restart(dev, "PHY TX errors"); - } - } - - if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK | - B43legacy_DMAIRQ_NONFATALMASK))) { - if (merged_dma_reason & B43legacy_DMAIRQ_FATALMASK) { - b43legacyerr(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]); - b43legacy_controller_restart(dev, "DMA error"); - mmiowb(); - spin_unlock_irqrestore(&dev->wl->irq_lock, flags); - return; - } - if (merged_dma_reason & B43legacy_DMAIRQ_NONFATALMASK) - b43legacyerr(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 & B43legacy_IRQ_UCODE_DEBUG)) - handle_irq_ucode_debug(dev); - if (reason & B43legacy_IRQ_TBTT_INDI) - handle_irq_tbtt_indication(dev); - if (reason & B43legacy_IRQ_ATIM_END) - handle_irq_atim_end(dev); - if (reason & B43legacy_IRQ_BEACON) - handle_irq_beacon(dev); - if (reason & B43legacy_IRQ_PMQ) - handle_irq_pmq(dev); - if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK) - ;/*TODO*/ - if (reason & B43legacy_IRQ_NOISESAMPLE_OK) - handle_irq_noise(dev); - - /* Check the DMA reason registers for received data. */ - if (dma_reason[0] & B43legacy_DMAIRQ_RX_DONE) { - if (b43legacy_using_pio(dev)) - b43legacy_pio_rx(dev->pio.queue0); - else - b43legacy_dma_rx(dev->dma.rx_ring0); - } - B43legacy_WARN_ON(dma_reason[1] & B43legacy_DMAIRQ_RX_DONE); - B43legacy_WARN_ON(dma_reason[2] & B43legacy_DMAIRQ_RX_DONE); - if (dma_reason[3] & B43legacy_DMAIRQ_RX_DONE) { - if (b43legacy_using_pio(dev)) - b43legacy_pio_rx(dev->pio.queue3); - else - b43legacy_dma_rx(dev->dma.rx_ring3); - } - B43legacy_WARN_ON(dma_reason[4] & B43legacy_DMAIRQ_RX_DONE); - B43legacy_WARN_ON(dma_reason[5] & B43legacy_DMAIRQ_RX_DONE); - - if (reason & B43legacy_IRQ_TX_OK) - handle_irq_transmit_status(dev); - - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); - mmiowb(); - spin_unlock_irqrestore(&dev->wl->irq_lock, flags); -} - -static void pio_irq_workaround(struct b43legacy_wldev *dev, - u16 base, int queueidx) -{ - u16 rxctl; - - rxctl = b43legacy_read16(dev, base + B43legacy_PIO_RXCTL); - if (rxctl & B43legacy_PIO_RXCTL_DATAAVAILABLE) - dev->dma_reason[queueidx] |= B43legacy_DMAIRQ_RX_DONE; - else - dev->dma_reason[queueidx] &= ~B43legacy_DMAIRQ_RX_DONE; -} - -static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason) -{ - if (b43legacy_using_pio(dev) && - (dev->dev->id.revision < 3) && - (!(reason & B43legacy_IRQ_PIO_WORKAROUND))) { - /* Apply a PIO specific workaround to the dma_reasons */ - pio_irq_workaround(dev, B43legacy_MMIO_PIO1_BASE, 0); - pio_irq_workaround(dev, B43legacy_MMIO_PIO2_BASE, 1); - pio_irq_workaround(dev, B43legacy_MMIO_PIO3_BASE, 2); - pio_irq_workaround(dev, B43legacy_MMIO_PIO4_BASE, 3); - } - - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, reason); - - b43legacy_write32(dev, B43legacy_MMIO_DMA0_REASON, - dev->dma_reason[0]); - b43legacy_write32(dev, B43legacy_MMIO_DMA1_REASON, - dev->dma_reason[1]); - b43legacy_write32(dev, B43legacy_MMIO_DMA2_REASON, - dev->dma_reason[2]); - b43legacy_write32(dev, B43legacy_MMIO_DMA3_REASON, - dev->dma_reason[3]); - b43legacy_write32(dev, B43legacy_MMIO_DMA4_REASON, - dev->dma_reason[4]); - b43legacy_write32(dev, B43legacy_MMIO_DMA5_REASON, - dev->dma_reason[5]); -} - -/* Interrupt handler top-half */ -static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id) -{ - irqreturn_t ret = IRQ_NONE; - struct b43legacy_wldev *dev = dev_id; - u32 reason; - - B43legacy_WARN_ON(!dev); - - spin_lock(&dev->wl->irq_lock); - - if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED)) - /* This can only happen on shared IRQ lines. */ - goto out; - reason = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); - if (reason == 0xffffffff) /* shared IRQ */ - goto out; - ret = IRQ_HANDLED; - reason &= dev->irq_mask; - if (!reason) - goto out; - - dev->dma_reason[0] = b43legacy_read32(dev, - B43legacy_MMIO_DMA0_REASON) - & 0x0001DC00; - dev->dma_reason[1] = b43legacy_read32(dev, - B43legacy_MMIO_DMA1_REASON) - & 0x0000DC00; - dev->dma_reason[2] = b43legacy_read32(dev, - B43legacy_MMIO_DMA2_REASON) - & 0x0000DC00; - dev->dma_reason[3] = b43legacy_read32(dev, - B43legacy_MMIO_DMA3_REASON) - & 0x0001DC00; - dev->dma_reason[4] = b43legacy_read32(dev, - B43legacy_MMIO_DMA4_REASON) - & 0x0000DC00; - dev->dma_reason[5] = b43legacy_read32(dev, - B43legacy_MMIO_DMA5_REASON) - & 0x0000DC00; - - b43legacy_interrupt_ack(dev, reason); - /* Disable all IRQs. They are enabled again in the bottom half. */ - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); - /* Save the reason code and call our bottom half. */ - dev->irq_reason = reason; - tasklet_schedule(&dev->isr_tasklet); -out: - mmiowb(); - spin_unlock(&dev->wl->irq_lock); - - return ret; -} - -static void b43legacy_release_firmware(struct b43legacy_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 b43legacy_print_fw_helptext(struct b43legacy_wl *wl) -{ - /*(DEBLOBBED)*/ -} - -static void b43legacy_fw_cb(const struct firmware *firmware, void *context) -{ - struct b43legacy_wldev *dev = context; - - dev->fwp = firmware; - complete(&dev->fw_load_complete); -} - -static int do_request_fw(struct b43legacy_wldev *dev, - const char *name, - const struct firmware **fw, bool async) -{ - char path[sizeof(modparam_fwpostfix) + 32]; - struct b43legacy_fw_header *hdr; - u32 size; - int err; - - if (!name) - return 0; - - snprintf(path, ARRAY_SIZE(path), - "/*(DEBLOBBED)*/", - modparam_fwpostfix, name); - b43legacyinfo(dev->wl, "Loading firmware %s\n", path); - if (async) { - init_completion(&dev->fw_load_complete); - err = reject_firmware_nowait(THIS_MODULE, 1, path, - dev->dev->dev, GFP_KERNEL, - dev, b43legacy_fw_cb); - if (err) { - b43legacyerr(dev->wl, "Unable to load firmware\n"); - return err; - } - /* stall here until fw ready */ - wait_for_completion(&dev->fw_load_complete); - if (!dev->fwp) - err = -EINVAL; - *fw = dev->fwp; - } else { - err = reject_firmware(fw, path, dev->dev->dev); - } - if (err) { - b43legacyerr(dev->wl, "Firmware file \"%s\" not found " - "or load failed.\n", path); - return err; - } - if ((*fw)->size < sizeof(struct b43legacy_fw_header)) - goto err_format; - hdr = (struct b43legacy_fw_header *)((*fw)->data); - switch (hdr->type) { - case B43legacy_FW_TYPE_UCODE: - case B43legacy_FW_TYPE_PCM: - size = be32_to_cpu(hdr->size); - if (size != (*fw)->size - sizeof(struct b43legacy_fw_header)) - goto err_format; - /* fallthrough */ - case B43legacy_FW_TYPE_IV: - if (hdr->ver != 1) - goto err_format; - break; - default: - goto err_format; - } - - return err; - -err_format: - b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path); - return -EPROTO; -} - -static int b43legacy_one_core_attach(struct ssb_device *dev, - struct b43legacy_wl *wl); -static void b43legacy_one_core_detach(struct ssb_device *dev); - -static void b43legacy_request_firmware(struct work_struct *work) -{ - struct b43legacy_wl *wl = container_of(work, - struct b43legacy_wl, firmware_load); - struct b43legacy_wldev *dev = wl->current_dev; - struct b43legacy_firmware *fw = &dev->fw; - const u8 rev = dev->dev->id.revision; - const char *filename; - int err; - - if (!fw->ucode) { - if (rev == 2) - filename = "ucode2"; - else if (rev == 4) - filename = "ucode4"; - else - filename = "ucode5"; - err = do_request_fw(dev, filename, &fw->ucode, true); - if (err) - goto err_load; - } - if (!fw->pcm) { - if (rev < 5) - filename = "pcm4"; - else - filename = "pcm5"; - err = do_request_fw(dev, filename, &fw->pcm, false); - if (err) - goto err_load; - } - if (!fw->initvals) { - switch (dev->phy.type) { - case B43legacy_PHYTYPE_B: - case B43legacy_PHYTYPE_G: - if ((rev >= 5) && (rev <= 10)) - filename = "b0g0initvals5"; - else if (rev == 2 || rev == 4) - filename = "b0g0initvals2"; - else - goto err_no_initvals; - break; - default: - goto err_no_initvals; - } - err = do_request_fw(dev, filename, &fw->initvals, false); - if (err) - goto err_load; - } - if (!fw->initvals_band) { - switch (dev->phy.type) { - case B43legacy_PHYTYPE_B: - case B43legacy_PHYTYPE_G: - if ((rev >= 5) && (rev <= 10)) - filename = "b0g0bsinitvals5"; - else if (rev >= 11) - filename = NULL; - else if (rev == 2 || rev == 4) - filename = NULL; - else - goto err_no_initvals; - break; - default: - goto err_no_initvals; - } - err = do_request_fw(dev, filename, &fw->initvals_band, false); - if (err) - goto err_load; - } - err = ieee80211_register_hw(wl->hw); - if (err) - goto err_one_core_detach; - return; - -err_one_core_detach: - b43legacy_one_core_detach(dev->dev); - goto error; - -err_load: - b43legacy_print_fw_helptext(dev->wl); - goto error; - -err_no_initvals: - err = -ENODEV; - b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, " - "core rev %u\n", dev->phy.type, rev); - goto error; - -error: - b43legacy_release_firmware(dev); - return; -} - -static int b43legacy_upload_microcode(struct b43legacy_wldev *dev) -{ - struct wiphy *wiphy = dev->wl->hw->wiphy; - const size_t hdr_len = sizeof(struct b43legacy_fw_header); - const __be32 *data; - unsigned int i; - unsigned int len; - u16 fwrev; - u16 fwpatch; - u16 fwdate; - u16 fwtime; - u32 tmp, macctl; - int err = 0; - - /* Jump the microcode PSM to offset 0 */ - macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN); - macctl |= B43legacy_MACCTL_PSM_JMP0; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); - /* Zero out all microcode PSM registers and shared memory. */ - for (i = 0; i < 64; i++) - b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0); - for (i = 0; i < 4096; i += 2) - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0); - - /* Upload Microcode. */ - data = (__be32 *) (dev->fw.ucode->data + hdr_len); - len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32); - b43legacy_shm_control_word(dev, - B43legacy_SHM_UCODE | - B43legacy_SHM_AUTOINC_W, - 0x0000); - for (i = 0; i < len; i++) { - b43legacy_write32(dev, B43legacy_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); - b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA); - b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000); - /* No need for autoinc bit in SHM_HW */ - b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB); - for (i = 0; i < len; i++) { - b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, - be32_to_cpu(data[i])); - udelay(10); - } - } - - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, - B43legacy_IRQ_ALL); - - /* Start the microcode PSM */ - macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - macctl &= ~B43legacy_MACCTL_PSM_JMP0; - macctl |= B43legacy_MACCTL_PSM_RUN; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); - - /* Wait for the microcode to load and respond */ - i = 0; - while (1) { - tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); - if (tmp == B43legacy_IRQ_MAC_SUSPENDED) - break; - i++; - if (i >= B43legacy_IRQWAIT_MAX_RETRIES) { - b43legacyerr(dev->wl, "Microcode not responding\n"); - b43legacy_print_fw_helptext(dev->wl); - err = -ENODEV; - goto error; - } - msleep_interruptible(50); - if (signal_pending(current)) { - err = -EINTR; - goto error; - } - } - /* dummy read follows */ - b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); - - /* Get and check the revisions. */ - fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_UCODEREV); - fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_UCODEPATCH); - fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_UCODEDATE); - fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_UCODETIME); - - if (fwrev > 0x128) { - b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE." - " Only firmware from binary drivers version 3.x" - " is supported. You must change your firmware" - " files.\n"); - b43legacy_print_fw_helptext(dev->wl); - err = -EOPNOTSUPP; - goto error; - } - b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %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; - - snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u", - dev->fw.rev, dev->fw.patch); - wiphy->hw_version = dev->dev->id.coreid; - - return 0; - -error: - macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - macctl &= ~B43legacy_MACCTL_PSM_RUN; - macctl |= B43legacy_MACCTL_PSM_JMP0; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); - - return err; -} - -static int b43legacy_write_initvals(struct b43legacy_wldev *dev, - const struct b43legacy_iv *ivals, - size_t count, - size_t array_size) -{ - const struct b43legacy_iv *iv; - u16 offset; - size_t i; - bool bit32; - - BUILD_BUG_ON(sizeof(struct b43legacy_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 & B43legacy_IV_32BIT); - offset &= B43legacy_IV_OFFSET_MASK; - if (offset >= 0x1000) - goto err_format; - if (bit32) { - u32 value; - - if (array_size < sizeof(iv->data.d32)) - goto err_format; - array_size -= sizeof(iv->data.d32); - - value = get_unaligned_be32(&iv->data.d32); - b43legacy_write32(dev, offset, value); - - iv = (const struct b43legacy_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); - b43legacy_write16(dev, offset, value); - - iv = (const struct b43legacy_iv *)((const uint8_t *)iv + - sizeof(__be16) + - sizeof(__be16)); - } - } - if (array_size) - goto err_format; - - return 0; - -err_format: - b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n"); - b43legacy_print_fw_helptext(dev->wl); - - return -EPROTO; -} - -static int b43legacy_upload_initvals(struct b43legacy_wldev *dev) -{ - const size_t hdr_len = sizeof(struct b43legacy_fw_header); - const struct b43legacy_fw_header *hdr; - struct b43legacy_firmware *fw = &dev->fw; - const struct b43legacy_iv *ivals; - size_t count; - int err; - - hdr = (const struct b43legacy_fw_header *)(fw->initvals->data); - ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len); - count = be32_to_cpu(hdr->size); - err = b43legacy_write_initvals(dev, ivals, count, - fw->initvals->size - hdr_len); - if (err) - goto out; - if (fw->initvals_band) { - hdr = (const struct b43legacy_fw_header *) - (fw->initvals_band->data); - ivals = (const struct b43legacy_iv *)(fw->initvals_band->data - + hdr_len); - count = be32_to_cpu(hdr->size); - err = b43legacy_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 b43legacy_gpio_init(struct b43legacy_wldev *dev) -{ - struct ssb_bus *bus = dev->dev->bus; - struct ssb_device *gpiodev, *pcidev = NULL; - u32 mask; - u32 set; - - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, - b43legacy_read32(dev, - B43legacy_MMIO_MACCTL) - & 0xFFFF3FFF); - - b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK, - b43legacy_read16(dev, - B43legacy_MMIO_GPIO_MASK) - | 0x000F); - - mask = 0x0000001F; - set = 0x0000000F; - if (dev->dev->bus->chip_id == 0x4301) { - mask |= 0x0060; - set |= 0x0060; - } - if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) { - b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK, - b43legacy_read16(dev, - B43legacy_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, B43legacy_GPIO_CONTROL, - (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL) - & ~mask) | set); - - return 0; -} - -/* Turn off all GPIO stuff. Call this on module unload, for example. */ -static void b43legacy_gpio_cleanup(struct b43legacy_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, B43legacy_GPIO_CONTROL, 0); -} - -/* http://bcm-specs.sipsolutions.net/EnableMac */ -void b43legacy_mac_enable(struct b43legacy_wldev *dev) -{ - dev->mac_suspended--; - B43legacy_WARN_ON(dev->mac_suspended < 0); - B43legacy_WARN_ON(irqs_disabled()); - if (dev->mac_suspended == 0) { - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, - b43legacy_read32(dev, - B43legacy_MMIO_MACCTL) - | B43legacy_MACCTL_ENABLED); - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, - B43legacy_IRQ_MAC_SUSPENDED); - /* the next two are dummy reads */ - b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); - b43legacy_power_saving_ctl_bits(dev, -1, -1); - - /* Re-enable IRQs. */ - spin_lock_irq(&dev->wl->irq_lock); - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, - dev->irq_mask); - spin_unlock_irq(&dev->wl->irq_lock); - } -} - -/* http://bcm-specs.sipsolutions.net/SuspendMAC */ -void b43legacy_mac_suspend(struct b43legacy_wldev *dev) -{ - int i; - u32 tmp; - - might_sleep(); - B43legacy_WARN_ON(irqs_disabled()); - B43legacy_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); - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); - spin_unlock_irq(&dev->wl->irq_lock); - b43legacy_synchronize_irq(dev); - - b43legacy_power_saving_ctl_bits(dev, -1, 1); - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, - b43legacy_read32(dev, - B43legacy_MMIO_MACCTL) - & ~B43legacy_MACCTL_ENABLED); - b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); - for (i = 40; i; i--) { - tmp = b43legacy_read32(dev, - B43legacy_MMIO_GEN_IRQ_REASON); - if (tmp & B43legacy_IRQ_MAC_SUSPENDED) - goto out; - msleep(1); - } - b43legacyerr(dev->wl, "MAC suspend failed\n"); - } -out: - dev->mac_suspended++; -} - -static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev) -{ - struct b43legacy_wl *wl = dev->wl; - u32 ctl; - u16 cfp_pretbtt; - - ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - /* Reset status to STA infrastructure mode. */ - ctl &= ~B43legacy_MACCTL_AP; - ctl &= ~B43legacy_MACCTL_KEEP_CTL; - ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP; - ctl &= ~B43legacy_MACCTL_KEEP_BAD; - ctl &= ~B43legacy_MACCTL_PROMISC; - ctl &= ~B43legacy_MACCTL_BEACPROMISC; - ctl |= B43legacy_MACCTL_INFRA; - - if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) - ctl |= B43legacy_MACCTL_AP; - else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)) - ctl &= ~B43legacy_MACCTL_INFRA; - - if (wl->filter_flags & FIF_CONTROL) - ctl |= B43legacy_MACCTL_KEEP_CTL; - if (wl->filter_flags & FIF_FCSFAIL) - ctl |= B43legacy_MACCTL_KEEP_BAD; - if (wl->filter_flags & FIF_PLCPFAIL) - ctl |= B43legacy_MACCTL_KEEP_BADPLCP; - if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC) - ctl |= B43legacy_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 |= B43legacy_MACCTL_PROMISC; - - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl); - - cfp_pretbtt = 2; - if ((ctl & B43legacy_MACCTL_INFRA) && - !(ctl & B43legacy_MACCTL_AP)) { - if (dev->dev->bus->chip_id == 0x4306 && - dev->dev->bus->chip_rev == 3) - cfp_pretbtt = 100; - else - cfp_pretbtt = 50; - } - b43legacy_write16(dev, 0x612, cfp_pretbtt); -} - -static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev, - u16 rate, - int is_ofdm) -{ - u16 offset; - - if (is_ofdm) { - offset = 0x480; - offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2; - } else { - offset = 0x4C0; - offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2; - } - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20, - b43legacy_shm_read16(dev, - B43legacy_SHM_SHARED, offset)); -} - -static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev) -{ - switch (dev->phy.type) { - case B43legacy_PHYTYPE_G: - b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1); - b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1); - b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1); - b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1); - b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1); - b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1); - b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1); - /* fallthrough */ - case B43legacy_PHYTYPE_B: - b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0); - b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0); - b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0); - b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0); - break; - default: - B43legacy_BUG_ON(1); - } -} - -/* Set the TX-Antenna for management frames sent by firmware. */ -static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev, - int antenna) -{ - u16 ant = 0; - u16 tmp; - - switch (antenna) { - case B43legacy_ANTENNA0: - ant |= B43legacy_TX4_PHY_ANT0; - break; - case B43legacy_ANTENNA1: - ant |= B43legacy_TX4_PHY_ANT1; - break; - case B43legacy_ANTENNA_AUTO: - ant |= B43legacy_TX4_PHY_ANTLAST; - break; - default: - B43legacy_BUG_ON(1); - } - - /* FIXME We also need to set the other flags of the PHY control - * field somewhere. */ - - /* For Beacons */ - tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_BEACPHYCTL); - tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_BEACPHYCTL, tmp); - /* For ACK/CTS */ - tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_ACKCTSPHYCTL); - tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_ACKCTSPHYCTL, tmp); - /* For Probe Resposes */ - tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_PRPHYCTL); - tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_PRPHYCTL, tmp); -} - -/* This is the opposite of b43legacy_chip_init() */ -static void b43legacy_chip_exit(struct b43legacy_wldev *dev) -{ - b43legacy_radio_turn_off(dev, 1); - b43legacy_gpio_cleanup(dev); - /* firmware is released later */ -} - -/* Initialize the chip - * http://bcm-specs.sipsolutions.net/ChipInit - */ -static int b43legacy_chip_init(struct b43legacy_wldev *dev) -{ - struct b43legacy_phy *phy = &dev->phy; - int err; - int tmp; - u32 value32, macctl; - u16 value16; - - /* Initialize the MAC control */ - macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED; - if (dev->phy.gmode) - macctl |= B43legacy_MACCTL_GMODE; - macctl |= B43legacy_MACCTL_INFRA; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); - - err = b43legacy_upload_microcode(dev); - if (err) - goto out; /* firmware is released later */ - - err = b43legacy_gpio_init(dev); - if (err) - goto out; /* firmware is released later */ - - err = b43legacy_upload_initvals(dev); - if (err) - goto err_gpio_clean; - b43legacy_radio_turn_on(dev); - - b43legacy_write16(dev, 0x03E6, 0x0000); - err = b43legacy_phy_init(dev); - if (err) - goto err_radio_off; - - /* Select initial Interference Mitigation. */ - tmp = phy->interfmode; - phy->interfmode = B43legacy_INTERFMODE_NONE; - b43legacy_radio_set_interference_mitigation(dev, tmp); - - b43legacy_phy_set_antenna_diversity(dev); - b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT); - - if (phy->type == B43legacy_PHYTYPE_B) { - value16 = b43legacy_read16(dev, 0x005E); - value16 |= 0x0004; - b43legacy_write16(dev, 0x005E, value16); - } - b43legacy_write32(dev, 0x0100, 0x01000000); - if (dev->dev->id.revision < 5) - b43legacy_write32(dev, 0x010C, 0x01000000); - - value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - value32 &= ~B43legacy_MACCTL_INFRA; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32); - value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - value32 |= B43legacy_MACCTL_INFRA; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32); - - if (b43legacy_using_pio(dev)) { - b43legacy_write32(dev, 0x0210, 0x00000100); - b43legacy_write32(dev, 0x0230, 0x00000100); - b43legacy_write32(dev, 0x0250, 0x00000100); - b43legacy_write32(dev, 0x0270, 0x00000100); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034, - 0x0000); - } - - /* Probe Response Timeout value */ - /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */ - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000); - - /* Initially set the wireless operation mode. */ - b43legacy_adjust_opmode(dev); - - if (dev->dev->id.revision < 3) { - b43legacy_write16(dev, 0x060E, 0x0000); - b43legacy_write16(dev, 0x0610, 0x8000); - b43legacy_write16(dev, 0x0604, 0x0000); - b43legacy_write16(dev, 0x0606, 0x0200); - } else { - b43legacy_write32(dev, 0x0188, 0x80000000); - b43legacy_write32(dev, 0x018C, 0x02000000); - } - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000); - b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00); - b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00); - b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00); - b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00); - b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00); - b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00); - - value32 = ssb_read32(dev->dev, SSB_TMSLOW); - value32 |= B43legacy_TMSLOW_MACPHYCLKEN; - ssb_write32(dev->dev, SSB_TMSLOW, value32); - - b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY, - dev->dev->bus->chipco.fast_pwrup_delay); - - /* PHY TX errors counter. */ - atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); - - B43legacy_WARN_ON(err != 0); - b43legacydbg(dev->wl, "Chip initialized\n"); -out: - return err; - -err_radio_off: - b43legacy_radio_turn_off(dev, 1); -err_gpio_clean: - b43legacy_gpio_cleanup(dev); - goto out; -} - -static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev) -{ - struct b43legacy_phy *phy = &dev->phy; - - if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2) - return; - - b43legacy_mac_suspend(dev); - b43legacy_phy_lo_g_measure(dev); - b43legacy_mac_enable(dev); -} - -static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev) -{ - b43legacy_phy_lo_mark_all_unused(dev); - if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) { - b43legacy_mac_suspend(dev); - b43legacy_calc_nrssi_slope(dev); - b43legacy_mac_enable(dev); - } -} - -static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev) -{ - /* Update device statistics. */ - b43legacy_calculate_link_quality(dev); -} - -static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev) -{ - b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */ - - atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); - wmb(); -} - -static void do_periodic_work(struct b43legacy_wldev *dev) -{ - unsigned int state; - - state = dev->periodic_state; - if (state % 8 == 0) - b43legacy_periodic_every120sec(dev); - if (state % 4 == 0) - b43legacy_periodic_every60sec(dev); - if (state % 2 == 0) - b43legacy_periodic_every30sec(dev); - b43legacy_periodic_every15sec(dev); -} - -/* Periodic work locking policy: - * The whole periodic work handler is protected by - * wl->mutex. If another lock is needed somewhere in the - * pwork callchain, it's acquired in-place, where it's needed. - */ -static void b43legacy_periodic_work_handler(struct work_struct *work) -{ - struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev, - periodic_work.work); - struct b43legacy_wl *wl = dev->wl; - unsigned long delay; - - mutex_lock(&wl->mutex); - - if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED)) - goto out; - if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP)) - goto out_requeue; - - do_periodic_work(dev); - - dev->periodic_state++; -out_requeue: - if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST)) - delay = msecs_to_jiffies(50); - else - delay = round_jiffies_relative(HZ * 15); - ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay); -out: - mutex_unlock(&wl->mutex); -} - -static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev) -{ - struct delayed_work *work = &dev->periodic_work; - - dev->periodic_state = 0; - INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler); - ieee80211_queue_delayed_work(dev->wl->hw, work, 0); -} - -/* Validate access to the chip (SHM) */ -static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev) -{ - u32 value; - u32 shm_backup; - - shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0); - b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA); - if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) != - 0xAA5555AA) - goto error; - b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55); - if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) != - 0x55AAAA55) - goto error; - b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup); - - value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - if ((value | B43legacy_MACCTL_GMODE) != - (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED)) - goto error; - - value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); - if (value) - goto error; - - return 0; -error: - b43legacyerr(dev->wl, "Failed to validate the chipaccess\n"); - return -ENODEV; -} - -static void b43legacy_security_init(struct b43legacy_wldev *dev) -{ - dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20; - B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key)); - dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - 0x0056); - /* 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 */ - b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT, - dev->max_nr_keys - 8); -} - -#ifdef CONFIG_B43LEGACY_HWRNG -static int b43legacy_rng_read(struct hwrng *rng, u32 *data) -{ - struct b43legacy_wl *wl = (struct b43legacy_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 = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG); - spin_unlock_irqrestore(&wl->irq_lock, flags); - - return (sizeof(u16)); -} -#endif - -static void b43legacy_rng_exit(struct b43legacy_wl *wl) -{ -#ifdef CONFIG_B43LEGACY_HWRNG - if (wl->rng_initialized) - hwrng_unregister(&wl->rng); -#endif -} - -static int b43legacy_rng_init(struct b43legacy_wl *wl) -{ - int err = 0; - -#ifdef CONFIG_B43LEGACY_HWRNG - snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name), - "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy)); - wl->rng.name = wl->rng_name; - wl->rng.data_read = b43legacy_rng_read; - wl->rng.priv = (unsigned long)wl; - wl->rng_initialized = 1; - err = hwrng_register(&wl->rng); - if (err) { - wl->rng_initialized = 0; - b43legacyerr(wl, "Failed to register the random " - "number generator (%d)\n", err); - } - -#endif - return err; -} - -static void b43legacy_tx_work(struct work_struct *work) -{ - struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl, - tx_work); - struct b43legacy_wldev *dev; - struct sk_buff *skb; - int queue_num; - int err = 0; - - mutex_lock(&wl->mutex); - dev = wl->current_dev; - if (unlikely(!dev || b43legacy_status(dev) < B43legacy_STAT_STARTED)) { - mutex_unlock(&wl->mutex); - return; - } - - for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { - while (skb_queue_len(&wl->tx_queue[queue_num])) { - skb = skb_dequeue(&wl->tx_queue[queue_num]); - if (b43legacy_using_pio(dev)) - err = b43legacy_pio_tx(dev, skb); - else - err = b43legacy_dma_tx(dev, skb); - if (err == -ENOSPC) { - wl->tx_queue_stopped[queue_num] = 1; - ieee80211_stop_queue(wl->hw, queue_num); - skb_queue_head(&wl->tx_queue[queue_num], skb); - break; - } - if (unlikely(err)) - dev_kfree_skb(skb); /* Drop it */ - err = 0; - } - - if (!err) - wl->tx_queue_stopped[queue_num] = 0; - } - - mutex_unlock(&wl->mutex); -} - -static void b43legacy_op_tx(struct ieee80211_hw *hw, - struct ieee80211_tx_control *control, - struct sk_buff *skb) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - - if (unlikely(skb->len < 2 + 2 + 6)) { - /* Too short, this can't be a valid frame. */ - dev_kfree_skb_any(skb); - return; - } - B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags); - - skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb); - if (!wl->tx_queue_stopped[skb->queue_mapping]) - ieee80211_queue_work(wl->hw, &wl->tx_work); - else - ieee80211_stop_queue(wl->hw, skb->queue_mapping); -} - -static int b43legacy_op_conf_tx(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, u16 queue, - const struct ieee80211_tx_queue_params *params) -{ - return 0; -} - -static int b43legacy_op_get_stats(struct ieee80211_hw *hw, - struct ieee80211_low_level_stats *stats) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_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 B43legacy_PHYMODE_B: - return "B"; - case B43legacy_PHYMODE_G: - return "G"; - default: - B43legacy_BUG_ON(1); - } - return ""; -} - -static int find_wldev_for_phymode(struct b43legacy_wl *wl, - unsigned int phymode, - struct b43legacy_wldev **dev, - bool *gmode) -{ - struct b43legacy_wldev *d; - - list_for_each_entry(d, &wl->devlist, list) { - if (d->phy.possible_phymodes & phymode) { - /* Ok, this device supports the PHY-mode. - * Set the gmode bit. */ - *gmode = true; - *dev = d; - - return 0; - } - } - - return -ESRCH; -} - -static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev) -{ - struct ssb_device *sdev = dev->dev; - u32 tmslow; - - tmslow = ssb_read32(sdev, SSB_TMSLOW); - tmslow &= ~B43legacy_TMSLOW_GMODE; - tmslow |= B43legacy_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 |= B43legacy_TMSLOW_PHYRESET; - ssb_write32(sdev, SSB_TMSLOW, tmslow); - msleep(1); -} - -/* Expects wl->mutex locked */ -static int b43legacy_switch_phymode(struct b43legacy_wl *wl, - unsigned int new_mode) -{ - struct b43legacy_wldev *uninitialized_var(up_dev); - struct b43legacy_wldev *down_dev; - int err; - bool gmode = false; - int prev_status; - - err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode); - if (err) { - b43legacyerr(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; - b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n", - phymode_to_string(new_mode)); - down_dev = wl->current_dev; - - prev_status = b43legacy_status(down_dev); - /* Shutdown the currently running core. */ - if (prev_status >= B43legacy_STAT_STARTED) - b43legacy_wireless_core_stop(down_dev); - if (prev_status >= B43legacy_STAT_INITIALIZED) - b43legacy_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. */ - b43legacy_put_phy_into_reset(down_dev); - - /* Now start the new core. */ - up_dev->phy.gmode = gmode; - if (prev_status >= B43legacy_STAT_INITIALIZED) { - err = b43legacy_wireless_core_init(up_dev); - if (err) { - b43legacyerr(wl, "Fatal: Could not initialize device" - " for newly selected %s-PHY mode\n", - phymode_to_string(new_mode)); - goto init_failure; - } - } - if (prev_status >= B43legacy_STAT_STARTED) { - err = b43legacy_wireless_core_start(up_dev); - if (err) { - b43legacyerr(wl, "Fatal: Could not start device for " - "newly selected %s-PHY mode\n", - phymode_to_string(new_mode)); - b43legacy_wireless_core_exit(up_dev); - goto init_failure; - } - } - B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status); - - b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0); - - wl->current_dev = up_dev; - - return 0; -init_failure: - /* Whoops, failed to init the new core. No core is operating now. */ - wl->current_dev = NULL; - return err; -} - -/* Write the short and long frame retry limit values. */ -static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev, - unsigned int short_retry, - unsigned int long_retry) -{ - /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing - * the chip-internal counter. */ - short_retry = min(short_retry, (unsigned int)0xF); - long_retry = min(long_retry, (unsigned int)0xF); - - b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry); - b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry); -} - -static int b43legacy_op_dev_config(struct ieee80211_hw *hw, - u32 changed) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - struct b43legacy_wldev *dev; - struct b43legacy_phy *phy; - struct ieee80211_conf *conf = &hw->conf; - unsigned long flags; - unsigned int new_phymode = 0xFFFF; - int antenna_tx; - int err = 0; - - antenna_tx = B43legacy_ANTENNA_DEFAULT; - - mutex_lock(&wl->mutex); - dev = wl->current_dev; - phy = &dev->phy; - - if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) - b43legacy_set_retry_limits(dev, - conf->short_frame_max_tx_count, - conf->long_frame_max_tx_count); - changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS; - if (!changed) - goto out_unlock_mutex; - - /* Switch the PHY mode (if necessary). */ - switch (conf->chandef.chan->band) { - case IEEE80211_BAND_2GHZ: - if (phy->type == B43legacy_PHYTYPE_B) - new_phymode = B43legacy_PHYMODE_B; - else - new_phymode = B43legacy_PHYMODE_G; - break; - default: - B43legacy_WARN_ON(1); - } - err = b43legacy_switch_phymode(wl, new_phymode); - if (err) - goto out_unlock_mutex; - - /* 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 (b43legacy_status(dev) < B43legacy_STAT_STARTED) { - spin_unlock_irqrestore(&wl->irq_lock, flags); - goto out_unlock_mutex; - } - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); - spin_unlock_irqrestore(&wl->irq_lock, flags); - b43legacy_synchronize_irq(dev); - - /* Switch to the requested channel. - * The firmware takes care of races with the TX handler. */ - if (conf->chandef.chan->hw_value != phy->channel) - b43legacy_radio_selectchannel(dev, conf->chandef.chan->hw_value, - 0); - - dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR); - - /* Adjust the desired TX power level. */ - if (conf->power_level != 0) { - if (conf->power_level != phy->power_level) { - phy->power_level = conf->power_level; - b43legacy_phy_xmitpower(dev); - } - } - - /* Antennas for RX and management frame TX. */ - b43legacy_mgmtframe_txantenna(dev, antenna_tx); - - if (wl->radio_enabled != phy->radio_on) { - if (wl->radio_enabled) { - b43legacy_radio_turn_on(dev); - b43legacyinfo(dev->wl, "Radio turned on by software\n"); - if (!dev->radio_hw_enable) - b43legacyinfo(dev->wl, "The hardware RF-kill" - " button still turns the radio" - " physically off. Press the" - " button to turn it on.\n"); - } else { - b43legacy_radio_turn_off(dev, 0); - b43legacyinfo(dev->wl, "Radio turned off by" - " software\n"); - } - } - - spin_lock_irqsave(&wl->irq_lock, flags); - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); - mmiowb(); - spin_unlock_irqrestore(&wl->irq_lock, flags); -out_unlock_mutex: - mutex_unlock(&wl->mutex); - - return err; -} - -static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates) -{ - struct ieee80211_supported_band *sband = - dev->wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ]; - struct ieee80211_rate *rate; - int i; - u16 basic, direct, offset, basic_offset, rateptr; - - for (i = 0; i < sband->n_bitrates; i++) { - rate = &sband->bitrates[i]; - - if (b43legacy_is_cck_rate(rate->hw_value)) { - direct = B43legacy_SHM_SH_CCKDIRECT; - basic = B43legacy_SHM_SH_CCKBASIC; - offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value); - offset &= 0xF; - } else { - direct = B43legacy_SHM_SH_OFDMDIRECT; - basic = B43legacy_SHM_SH_OFDMBASIC; - offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value); - offset &= 0xF; - } - - rate = ieee80211_get_response_rate(sband, brates, rate->bitrate); - - if (b43legacy_is_cck_rate(rate->hw_value)) { - basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value); - basic_offset &= 0xF; - } else { - basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value); - basic_offset &= 0xF; - } - - /* - * Get the pointer that we need to point to - * from the direct map - */ - rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, - direct + 2 * basic_offset); - /* and write it to the basic map */ - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - basic + 2 * offset, rateptr); - } -} - -static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_bss_conf *conf, - u32 changed) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - struct b43legacy_wldev *dev; - unsigned long flags; - - mutex_lock(&wl->mutex); - B43legacy_WARN_ON(wl->vif != vif); - - dev = wl->current_dev; - - /* 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 (b43legacy_status(dev) < B43legacy_STAT_STARTED) { - spin_unlock_irqrestore(&wl->irq_lock, flags); - goto out_unlock_mutex; - } - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); - - if (changed & BSS_CHANGED_BSSID) { - b43legacy_synchronize_irq(dev); - - if (conf->bssid) - memcpy(wl->bssid, conf->bssid, ETH_ALEN); - else - eth_zero_addr(wl->bssid); - } - - if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) { - if (changed & BSS_CHANGED_BEACON && - (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) || - b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))) - b43legacy_update_templates(wl); - - if (changed & BSS_CHANGED_BSSID) - b43legacy_write_mac_bssid_templates(dev); - } - spin_unlock_irqrestore(&wl->irq_lock, flags); - - b43legacy_mac_suspend(dev); - - if (changed & BSS_CHANGED_BEACON_INT && - (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) || - b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))) - b43legacy_set_beacon_int(dev, conf->beacon_int); - - if (changed & BSS_CHANGED_BASIC_RATES) - b43legacy_update_basic_rates(dev, conf->basic_rates); - - if (changed & BSS_CHANGED_ERP_SLOT) { - if (conf->use_short_slot) - b43legacy_short_slot_timing_enable(dev); - else - b43legacy_short_slot_timing_disable(dev); - } - - b43legacy_mac_enable(dev); - - spin_lock_irqsave(&wl->irq_lock, flags); - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); - /* XXX: why? */ - mmiowb(); - spin_unlock_irqrestore(&wl->irq_lock, flags); - out_unlock_mutex: - mutex_unlock(&wl->mutex); -} - -static void b43legacy_op_configure_filter(struct ieee80211_hw *hw, - unsigned int changed, - unsigned int *fflags,u64 multicast) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - struct b43legacy_wldev *dev = wl->current_dev; - unsigned long flags; - - if (!dev) { - *fflags = 0; - return; - } - - spin_lock_irqsave(&wl->irq_lock, flags); - *fflags &= FIF_ALLMULTI | - FIF_FCSFAIL | - FIF_PLCPFAIL | - FIF_CONTROL | - FIF_OTHER_BSS | - FIF_BCN_PRBRESP_PROMISC; - - changed &= FIF_ALLMULTI | - FIF_FCSFAIL | - FIF_PLCPFAIL | - FIF_CONTROL | - FIF_OTHER_BSS | - FIF_BCN_PRBRESP_PROMISC; - - wl->filter_flags = *fflags; - - if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) - b43legacy_adjust_opmode(dev); - spin_unlock_irqrestore(&wl->irq_lock, flags); -} - -/* Locking: wl->mutex */ -static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev) -{ - struct b43legacy_wl *wl = dev->wl; - unsigned long flags; - int queue_num; - - if (b43legacy_status(dev) < B43legacy_STAT_STARTED) - return; - - /* Disable and sync interrupts. We must do this before than - * setting the status to INITIALIZED, as the interrupt handler - * won't care about IRQs then. */ - spin_lock_irqsave(&wl->irq_lock, flags); - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); - b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */ - spin_unlock_irqrestore(&wl->irq_lock, flags); - b43legacy_synchronize_irq(dev); - - b43legacy_set_status(dev, B43legacy_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); - cancel_work_sync(&wl->tx_work); - mutex_lock(&wl->mutex); - - /* Drain all TX queues. */ - for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { - while (skb_queue_len(&wl->tx_queue[queue_num])) - dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num])); - } - -b43legacy_mac_suspend(dev); - free_irq(dev->dev->irq, dev); - b43legacydbg(wl, "Wireless interface stopped\n"); -} - -/* Locking: wl->mutex */ -static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev) -{ - int err; - - B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED); - - drain_txstatus_queue(dev); - err = request_irq(dev->dev->irq, b43legacy_interrupt_handler, - IRQF_SHARED, KBUILD_MODNAME, dev); - if (err) { - b43legacyerr(dev->wl, "Cannot request IRQ-%d\n", - dev->dev->irq); - goto out; - } - /* We are ready to run. */ - ieee80211_wake_queues(dev->wl->hw); - b43legacy_set_status(dev, B43legacy_STAT_STARTED); - - /* Start data flow (TX/RX) */ - b43legacy_mac_enable(dev); - b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); - - /* Start maintenance work */ - b43legacy_periodic_tasks_setup(dev); - - b43legacydbg(dev->wl, "Wireless interface started\n"); -out: - return err; -} - -/* Get PHY and RADIO versioning numbers */ -static int b43legacy_phy_versioning(struct b43legacy_wldev *dev) -{ - struct b43legacy_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 = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER); - analog_type = (tmp & B43legacy_PHYVER_ANALOG) - >> B43legacy_PHYVER_ANALOG_SHIFT; - phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT; - phy_rev = (tmp & B43legacy_PHYVER_VERSION); - switch (phy_type) { - case B43legacy_PHYTYPE_B: - if (phy_rev != 2 && phy_rev != 4 - && phy_rev != 6 && phy_rev != 7) - unsupported = 1; - break; - case B43legacy_PHYTYPE_G: - if (phy_rev > 8) - unsupported = 1; - break; - default: - unsupported = 1; - } - if (unsupported) { - b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY " - "(Analog %u, Type %u, Revision %u)\n", - analog_type, phy_type, phy_rev); - return -EOPNOTSUPP; - } - b43legacydbg(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 { - b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, - B43legacy_RADIOCTL_ID); - tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH); - tmp <<= 16; - b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, - B43legacy_RADIOCTL_ID); - tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW); - } - radio_manuf = (tmp & 0x00000FFF); - radio_ver = (tmp & 0x0FFFF000) >> 12; - radio_rev = (tmp & 0xF0000000) >> 28; - switch (phy_type) { - case B43legacy_PHYTYPE_B: - if ((radio_ver & 0xFFF0) != 0x2050) - unsupported = 1; - break; - case B43legacy_PHYTYPE_G: - if (radio_ver != 0x2050) - unsupported = 1; - break; - default: - B43legacy_BUG_ON(1); - } - if (unsupported) { - b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO " - "(Manuf 0x%X, Version 0x%X, Revision %u)\n", - radio_manuf, radio_ver, radio_rev); - return -EOPNOTSUPP; - } - b43legacydbg(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 b43legacy_wldev *dev, - struct b43legacy_phy *phy) -{ - struct b43legacy_lopair *lo; - int i; - - memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); - memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); - - /* Assume the radio is enabled. If it's not enabled, the state will - * immediately get fixed on the first periodic work run. */ - dev->radio_hw_enable = true; - - phy->savedpctlreg = 0xFFFF; - phy->aci_enable = false; - phy->aci_wlan_automatic = false; - phy->aci_hw_rssi = false; - - lo = phy->_lo_pairs; - if (lo) - memset(lo, 0, sizeof(struct b43legacy_lopair) * - B43legacy_LO_COUNT); - phy->max_lb_gain = 0; - phy->trsw_rx_gain = 0; - - /* Set default attenuation values. */ - phy->bbatt = b43legacy_default_baseband_attenuation(dev); - phy->rfatt = b43legacy_default_radio_attenuation(dev); - phy->txctl1 = b43legacy_default_txctl1(dev); - phy->txpwr_offset = 0; - - /* NRSSI */ - phy->nrssislope = 0; - for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) - phy->nrssi[i] = -1000; - for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) - phy->nrssi_lt[i] = i; - - phy->lofcal = 0xFFFF; - phy->initval = 0xFFFF; - - phy->interfmode = B43legacy_INTERFMODE_NONE; - phy->channel = 0xFF; -} - -static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev) -{ - /* Flags */ - dev->dfq_valid = false; - - /* Stats */ - memset(&dev->stats, 0, sizeof(dev->stats)); - - setup_struct_phy_for_init(dev, &dev->phy); - - /* IRQ related flags */ - dev->irq_reason = 0; - memset(dev->dma_reason, 0, sizeof(dev->dma_reason)); - dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE; - - dev->mac_suspended = 1; - - /* Noise calculation context */ - memset(&dev->noisecalc, 0, sizeof(dev->noisecalc)); -} - -static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev, - bool idle) { - u16 pu_delay = 1050; - - if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle) - pu_delay = 500; - if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8)) - pu_delay = max(pu_delay, (u16)2400); - - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_SPUWKUP, pu_delay); -} - -/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */ -static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev) -{ - u16 pretbtt; - - /* The time value is in microseconds. */ - if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) - pretbtt = 2; - else - pretbtt = 250; - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_PRETBTT, pretbtt); - b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt); -} - -/* Shutdown a wireless core */ -/* Locking: wl->mutex */ -static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev) -{ - struct b43legacy_phy *phy = &dev->phy; - u32 macctl; - - B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED); - if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED) - return; - b43legacy_set_status(dev, B43legacy_STAT_UNINIT); - - /* Stop the microcode PSM. */ - macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); - macctl &= ~B43legacy_MACCTL_PSM_RUN; - macctl |= B43legacy_MACCTL_PSM_JMP0; - b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); - - b43legacy_leds_exit(dev); - b43legacy_rng_exit(dev->wl); - b43legacy_pio_free(dev); - b43legacy_dma_free(dev); - b43legacy_chip_exit(dev); - b43legacy_radio_turn_off(dev, 1); - b43legacy_switch_analog(dev, 0); - if (phy->dyn_tssi_tbl) - kfree(phy->tssi2dbm); - kfree(phy->lo_control); - phy->lo_control = NULL; - if (dev->wl->current_beacon) { - dev_kfree_skb_any(dev->wl->current_beacon); - dev->wl->current_beacon = NULL; - } - - ssb_device_disable(dev->dev, 0); - ssb_bus_may_powerdown(dev->dev->bus); -} - -static void prepare_phy_data_for_init(struct b43legacy_wldev *dev) -{ - struct b43legacy_phy *phy = &dev->phy; - int i; - - /* Set default attenuation values. */ - phy->bbatt = b43legacy_default_baseband_attenuation(dev); - phy->rfatt = b43legacy_default_radio_attenuation(dev); - phy->txctl1 = b43legacy_default_txctl1(dev); - phy->txctl2 = 0xFFFF; - phy->txpwr_offset = 0; - - /* NRSSI */ - phy->nrssislope = 0; - for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) - phy->nrssi[i] = -1000; - for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) - phy->nrssi_lt[i] = i; - - phy->lofcal = 0xFFFF; - phy->initval = 0xFFFF; - - phy->aci_enable = false; - phy->aci_wlan_automatic = false; - phy->aci_hw_rssi = false; - - phy->antenna_diversity = 0xFFFF; - memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); - memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); - - /* Flags */ - phy->calibrated = 0; - - if (phy->_lo_pairs) - memset(phy->_lo_pairs, 0, - sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT); - memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain)); -} - -/* Initialize a wireless core */ -static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev) -{ - struct b43legacy_wl *wl = dev->wl; - struct ssb_bus *bus = dev->dev->bus; - struct b43legacy_phy *phy = &dev->phy; - struct ssb_sprom *sprom = &dev->dev->bus->sprom; - int err; - u32 hf; - u32 tmp; - - B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT); - - err = ssb_bus_powerup(bus, 0); - if (err) - goto out; - if (!ssb_device_is_enabled(dev->dev)) { - tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0; - b43legacy_wireless_core_reset(dev, tmp); - } - - if ((phy->type == B43legacy_PHYTYPE_B) || - (phy->type == B43legacy_PHYTYPE_G)) { - phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair) - * B43legacy_LO_COUNT, - GFP_KERNEL); - if (!phy->_lo_pairs) - return -ENOMEM; - } - setup_struct_wldev_for_init(dev); - - err = b43legacy_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); - - prepare_phy_data_for_init(dev); - b43legacy_phy_calibrate(dev); - err = b43legacy_chip_init(dev); - if (err) - goto err_kfree_tssitbl; - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_WLCOREREV, - dev->dev->id.revision); - hf = b43legacy_hf_read(dev); - if (phy->type == B43legacy_PHYTYPE_G) { - hf |= B43legacy_HF_SYMW; - if (phy->rev == 1) - hf |= B43legacy_HF_GDCW; - if (sprom->boardflags_lo & B43legacy_BFL_PACTRL) - hf |= B43legacy_HF_OFDMPABOOST; - } else if (phy->type == B43legacy_PHYTYPE_B) { - hf |= B43legacy_HF_SYMW; - if (phy->rev >= 2 && phy->radio_ver == 0x2050) - hf &= ~B43legacy_HF_GDCW; - } - b43legacy_hf_write(dev, hf); - - b43legacy_set_retry_limits(dev, - B43legacy_DEFAULT_SHORT_RETRY_LIMIT, - B43legacy_DEFAULT_LONG_RETRY_LIMIT); - - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - 0x0044, 3); - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - 0x0046, 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. */ - b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, - B43legacy_SHM_SH_PRMAXTIME, 1); - - b43legacy_rate_memory_init(dev); - - /* Minimum Contention Window */ - if (phy->type == B43legacy_PHYTYPE_B) - b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, - 0x0003, 31); - else - b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, - 0x0003, 15); - /* Maximum Contention Window */ - b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, - 0x0004, 1023); - - do { - if (b43legacy_using_pio(dev)) - err = b43legacy_pio_init(dev); - else { - err = b43legacy_dma_init(dev); - if (!err) - b43legacy_qos_init(dev); - } - } while (err == -EAGAIN); - if (err) - goto err_chip_exit; - - b43legacy_set_synth_pu_delay(dev, 1); - - ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */ - b43legacy_upload_card_macaddress(dev); - b43legacy_security_init(dev); - b43legacy_rng_init(wl); - - ieee80211_wake_queues(dev->wl->hw); - b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED); - - b43legacy_leds_init(dev); -out: - return err; - -err_chip_exit: - b43legacy_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; - ssb_bus_may_powerdown(bus); - B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT); - return err; -} - -static int b43legacy_op_add_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - struct b43legacy_wldev *dev; - unsigned long flags; - int err = -EOPNOTSUPP; - - /* TODO: allow WDS/AP devices to coexist */ - - if (vif->type != NL80211_IFTYPE_AP && - vif->type != NL80211_IFTYPE_STATION && - vif->type != NL80211_IFTYPE_WDS && - vif->type != NL80211_IFTYPE_ADHOC) - return -EOPNOTSUPP; - - mutex_lock(&wl->mutex); - if (wl->operating) - goto out_mutex_unlock; - - b43legacydbg(wl, "Adding Interface type %d\n", vif->type); - - dev = wl->current_dev; - wl->operating = true; - wl->vif = vif; - wl->if_type = vif->type; - memcpy(wl->mac_addr, vif->addr, ETH_ALEN); - - spin_lock_irqsave(&wl->irq_lock, flags); - b43legacy_adjust_opmode(dev); - b43legacy_set_pretbtt(dev); - b43legacy_set_synth_pu_delay(dev, 0); - b43legacy_upload_card_macaddress(dev); - spin_unlock_irqrestore(&wl->irq_lock, flags); - - err = 0; - out_mutex_unlock: - mutex_unlock(&wl->mutex); - - return err; -} - -static void b43legacy_op_remove_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - struct b43legacy_wldev *dev = wl->current_dev; - unsigned long flags; - - b43legacydbg(wl, "Removing Interface type %d\n", vif->type); - - mutex_lock(&wl->mutex); - - B43legacy_WARN_ON(!wl->operating); - B43legacy_WARN_ON(wl->vif != vif); - wl->vif = NULL; - - wl->operating = false; - - spin_lock_irqsave(&wl->irq_lock, flags); - b43legacy_adjust_opmode(dev); - eth_zero_addr(wl->mac_addr); - b43legacy_upload_card_macaddress(dev); - spin_unlock_irqrestore(&wl->irq_lock, flags); - - mutex_unlock(&wl->mutex); -} - -static int b43legacy_op_start(struct ieee80211_hw *hw) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - struct b43legacy_wldev *dev = wl->current_dev; - int did_init = 0; - int err = 0; - - /* Kill all old instance specific information to make sure - * the card won't use it in the short timeframe between start - * and mac80211 reconfiguring it. */ - eth_zero_addr(wl->bssid); - eth_zero_addr(wl->mac_addr); - wl->filter_flags = 0; - wl->beacon0_uploaded = false; - wl->beacon1_uploaded = false; - wl->beacon_templates_virgin = true; - wl->radio_enabled = true; - - mutex_lock(&wl->mutex); - - if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) { - err = b43legacy_wireless_core_init(dev); - if (err) - goto out_mutex_unlock; - did_init = 1; - } - - if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { - err = b43legacy_wireless_core_start(dev); - if (err) { - if (did_init) - b43legacy_wireless_core_exit(dev); - goto out_mutex_unlock; - } - } - - wiphy_rfkill_start_polling(hw->wiphy); - -out_mutex_unlock: - mutex_unlock(&wl->mutex); - - return err; -} - -static void b43legacy_op_stop(struct ieee80211_hw *hw) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - struct b43legacy_wldev *dev = wl->current_dev; - - cancel_work_sync(&(wl->beacon_update_trigger)); - - mutex_lock(&wl->mutex); - if (b43legacy_status(dev) >= B43legacy_STAT_STARTED) - b43legacy_wireless_core_stop(dev); - b43legacy_wireless_core_exit(dev); - wl->radio_enabled = false; - mutex_unlock(&wl->mutex); -} - -static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw, - struct ieee80211_sta *sta, bool set) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - unsigned long flags; - - spin_lock_irqsave(&wl->irq_lock, flags); - b43legacy_update_templates(wl); - spin_unlock_irqrestore(&wl->irq_lock, flags); - - return 0; -} - -static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx, - struct survey_info *survey) -{ - struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); - struct b43legacy_wldev *dev = wl->current_dev; - struct ieee80211_conf *conf = &hw->conf; - - if (idx != 0) - return -ENOENT; - - survey->channel = conf->chandef.chan; - survey->filled = SURVEY_INFO_NOISE_DBM; - survey->noise = dev->stats.link_noise; - - return 0; -} - -static const struct ieee80211_ops b43legacy_hw_ops = { - .tx = b43legacy_op_tx, - .conf_tx = b43legacy_op_conf_tx, - .add_interface = b43legacy_op_add_interface, - .remove_interface = b43legacy_op_remove_interface, - .config = b43legacy_op_dev_config, - .bss_info_changed = b43legacy_op_bss_info_changed, - .configure_filter = b43legacy_op_configure_filter, - .get_stats = b43legacy_op_get_stats, - .start = b43legacy_op_start, - .stop = b43legacy_op_stop, - .set_tim = b43legacy_op_beacon_set_tim, - .get_survey = b43legacy_op_get_survey, - .rfkill_poll = b43legacy_rfkill_poll, -}; - -/* Hard-reset the chip. Do not call this directly. - * Use b43legacy_controller_restart() - */ -static void b43legacy_chip_reset(struct work_struct *work) -{ - struct b43legacy_wldev *dev = - container_of(work, struct b43legacy_wldev, restart_work); - struct b43legacy_wl *wl = dev->wl; - int err = 0; - int prev_status; - - mutex_lock(&wl->mutex); - - prev_status = b43legacy_status(dev); - /* Bring the device down... */ - if (prev_status >= B43legacy_STAT_STARTED) - b43legacy_wireless_core_stop(dev); - if (prev_status >= B43legacy_STAT_INITIALIZED) - b43legacy_wireless_core_exit(dev); - - /* ...and up again. */ - if (prev_status >= B43legacy_STAT_INITIALIZED) { - err = b43legacy_wireless_core_init(dev); - if (err) - goto out; - } - if (prev_status >= B43legacy_STAT_STARTED) { - err = b43legacy_wireless_core_start(dev); - if (err) { - b43legacy_wireless_core_exit(dev); - goto out; - } - } -out: - if (err) - wl->current_dev = NULL; /* Failed to init the dev. */ - mutex_unlock(&wl->mutex); - if (err) - b43legacyerr(wl, "Controller restart FAILED\n"); - else - b43legacyinfo(wl, "Controller restarted\n"); -} - -static int b43legacy_setup_modes(struct b43legacy_wldev *dev, - int have_bphy, - int have_gphy) -{ - struct ieee80211_hw *hw = dev->wl->hw; - struct b43legacy_phy *phy = &dev->phy; - - phy->possible_phymodes = 0; - if (have_bphy) { - hw->wiphy->bands[IEEE80211_BAND_2GHZ] = - &b43legacy_band_2GHz_BPHY; - phy->possible_phymodes |= B43legacy_PHYMODE_B; - } - - if (have_gphy) { - hw->wiphy->bands[IEEE80211_BAND_2GHZ] = - &b43legacy_band_2GHz_GPHY; - phy->possible_phymodes |= B43legacy_PHYMODE_G; - } - - return 0; -} - -static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev) -{ - /* We release firmware that late to not be required to re-request - * is all the time when we reinit the core. */ - b43legacy_release_firmware(dev); -} - -static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev) -{ - struct b43legacy_wl *wl = dev->wl; - struct ssb_bus *bus = dev->dev->bus; - struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL; - int err; - int have_bphy = 0; - int 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) { - b43legacyerr(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_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY); - if (!have_gphy) - have_bphy = 1; - } else if (dev->dev->id.revision == 4) - have_gphy = 1; - else - have_bphy = 1; - - dev->phy.gmode = (have_gphy || have_bphy); - dev->phy.radio_on = true; - tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0; - b43legacy_wireless_core_reset(dev, tmp); - - err = b43legacy_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_bphy = 0; - have_gphy = 0; - switch (dev->phy.type) { - case B43legacy_PHYTYPE_B: - have_bphy = 1; - break; - case B43legacy_PHYTYPE_G: - have_gphy = 1; - break; - default: - B43legacy_BUG_ON(1); - } - } - dev->phy.gmode = (have_gphy || have_bphy); - tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0; - b43legacy_wireless_core_reset(dev, tmp); - - err = b43legacy_validate_chipaccess(dev); - if (err) - goto err_powerdown; - err = b43legacy_setup_modes(dev, 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, b43legacy_chip_reset); - - b43legacy_radio_turn_off(dev, 1); - b43legacy_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 b43legacy_one_core_detach(struct ssb_device *dev) -{ - struct b43legacy_wldev *wldev; - struct b43legacy_wl *wl; - - /* Do not cancel ieee80211-workqueue based work here. - * See comment in b43legacy_remove(). */ - - wldev = ssb_get_drvdata(dev); - wl = wldev->wl; - b43legacy_debugfs_remove_device(wldev); - b43legacy_wireless_core_detach(wldev); - list_del(&wldev->list); - wl->nr_devs--; - ssb_set_drvdata(dev, NULL); - kfree(wldev); -} - -static int b43legacy_one_core_attach(struct ssb_device *dev, - struct b43legacy_wl *wl) -{ - struct b43legacy_wldev *wldev; - int err = -ENOMEM; - - wldev = kzalloc(sizeof(*wldev), GFP_KERNEL); - if (!wldev) - goto out; - - wldev->dev = dev; - wldev->wl = wl; - b43legacy_set_status(wldev, B43legacy_STAT_UNINIT); - wldev->bad_frames_preempt = modparam_bad_frames_preempt; - tasklet_init(&wldev->isr_tasklet, - (void (*)(unsigned long))b43legacy_interrupt_tasklet, - (unsigned long)wldev); - if (modparam_pio) - wldev->__using_pio = true; - INIT_LIST_HEAD(&wldev->list); - - err = b43legacy_wireless_core_attach(wldev); - if (err) - goto err_kfree_wldev; - - list_add(&wldev->list, &wl->devlist); - wl->nr_devs++; - ssb_set_drvdata(dev, wldev); - b43legacy_debugfs_add_device(wldev); -out: - return err; - -err_kfree_wldev: - kfree(wldev); - return err; -} - -static void b43legacy_sprom_fixup(struct ssb_bus *bus) -{ - /* boardflags workarounds */ - if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && - bus->boardinfo.type == 0x4E && - bus->sprom.board_rev > 0x40) - bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL; -} - -static void b43legacy_wireless_exit(struct ssb_device *dev, - struct b43legacy_wl *wl) -{ - struct ieee80211_hw *hw = wl->hw; - - ssb_set_devtypedata(dev, NULL); - ieee80211_free_hw(hw); -} - -static int b43legacy_wireless_init(struct ssb_device *dev) -{ - struct ssb_sprom *sprom = &dev->bus->sprom; - struct ieee80211_hw *hw; - struct b43legacy_wl *wl; - int err = -ENOMEM; - int queue_num; - - b43legacy_sprom_fixup(dev->bus); - - hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops); - if (!hw) { - b43legacyerr(NULL, "Could not allocate ieee80211 device\n"); - goto out; - } - - /* fill hw info */ - ieee80211_hw_set(hw, RX_INCLUDES_FCS); - ieee80211_hw_set(hw, SIGNAL_DBM); - - hw->wiphy->interface_modes = - BIT(NL80211_IFTYPE_AP) | - BIT(NL80211_IFTYPE_STATION) | - BIT(NL80211_IFTYPE_WDS) | - BIT(NL80211_IFTYPE_ADHOC); - hw->queues = 1; /* FIXME: hardware has more queues */ - hw->max_rates = 2; - SET_IEEE80211_DEV(hw, dev->dev); - if (is_valid_ether_addr(sprom->et1mac)) - SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac); - else - SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac); - - /* Get and initialize struct b43legacy_wl */ - wl = hw_to_b43legacy_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); - INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work); - INIT_WORK(&wl->tx_work, b43legacy_tx_work); - - /* Initialize queues and flags. */ - for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { - skb_queue_head_init(&wl->tx_queue[queue_num]); - wl->tx_queue_stopped[queue_num] = 0; - } - - ssb_set_devtypedata(dev, wl); - b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n", - dev->bus->chip_id, dev->id.revision); - err = 0; -out: - return err; -} - -static int b43legacy_probe(struct ssb_device *dev, - const struct ssb_device_id *id) -{ - struct b43legacy_wl *wl; - int err; - int first = 0; - - wl = ssb_get_devtypedata(dev); - if (!wl) { - /* Probing the first core - setup common struct b43legacy_wl */ - first = 1; - err = b43legacy_wireless_init(dev); - if (err) - goto out; - wl = ssb_get_devtypedata(dev); - B43legacy_WARN_ON(!wl); - } - err = b43legacy_one_core_attach(dev, wl); - if (err) - goto err_wireless_exit; - - /* setup and start work to load firmware */ - INIT_WORK(&wl->firmware_load, b43legacy_request_firmware); - schedule_work(&wl->firmware_load); - -out: - return err; - -err_wireless_exit: - if (first) - b43legacy_wireless_exit(dev, wl); - return err; -} - -static void b43legacy_remove(struct ssb_device *dev) -{ - struct b43legacy_wl *wl = ssb_get_devtypedata(dev); - struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); - - /* We must cancel any work here before unregistering from ieee80211, - * as the ieee80211 unreg will destroy the workqueue. */ - cancel_work_sync(&wldev->restart_work); - cancel_work_sync(&wl->firmware_load); - complete(&wldev->fw_load_complete); - - B43legacy_WARN_ON(!wl); - if (!wldev->fw.ucode) - return; /* NULL if fw never loaded */ - if (wl->current_dev == wldev) - ieee80211_unregister_hw(wl->hw); - - b43legacy_one_core_detach(dev); - - if (list_empty(&wl->devlist)) - /* Last core on the chip unregistered. - * We can destroy common struct b43legacy_wl. - */ - b43legacy_wireless_exit(dev, wl); -} - -/* Perform a hardware reset. This can be called from any context. */ -void b43legacy_controller_restart(struct b43legacy_wldev *dev, - const char *reason) -{ - /* Must avoid requeueing, if we are in shutdown. */ - if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) - return; - b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason); - ieee80211_queue_work(dev->wl->hw, &dev->restart_work); -} - -#ifdef CONFIG_PM - -static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state) -{ - struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); - struct b43legacy_wl *wl = wldev->wl; - - b43legacydbg(wl, "Suspending...\n"); - - mutex_lock(&wl->mutex); - wldev->suspend_init_status = b43legacy_status(wldev); - if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) - b43legacy_wireless_core_stop(wldev); - if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) - b43legacy_wireless_core_exit(wldev); - mutex_unlock(&wl->mutex); - - b43legacydbg(wl, "Device suspended.\n"); - - return 0; -} - -static int b43legacy_resume(struct ssb_device *dev) -{ - struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); - struct b43legacy_wl *wl = wldev->wl; - int err = 0; - - b43legacydbg(wl, "Resuming...\n"); - - mutex_lock(&wl->mutex); - if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) { - err = b43legacy_wireless_core_init(wldev); - if (err) { - b43legacyerr(wl, "Resume failed at core init\n"); - goto out; - } - } - if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) { - err = b43legacy_wireless_core_start(wldev); - if (err) { - b43legacy_wireless_core_exit(wldev); - b43legacyerr(wl, "Resume failed at core start\n"); - goto out; - } - } - - b43legacydbg(wl, "Device resumed.\n"); -out: - mutex_unlock(&wl->mutex); - return err; -} - -#else /* CONFIG_PM */ -# define b43legacy_suspend NULL -# define b43legacy_resume NULL -#endif /* CONFIG_PM */ - -static struct ssb_driver b43legacy_ssb_driver = { - .name = KBUILD_MODNAME, - .id_table = b43legacy_ssb_tbl, - .probe = b43legacy_probe, - .remove = b43legacy_remove, - .suspend = b43legacy_suspend, - .resume = b43legacy_resume, -}; - -static void b43legacy_print_driverinfo(void) -{ - const char *feat_pci = "", *feat_leds = "", - *feat_pio = "", *feat_dma = ""; - -#ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT - feat_pci = "P"; -#endif -#ifdef CONFIG_B43LEGACY_LEDS - feat_leds = "L"; -#endif -#ifdef CONFIG_B43LEGACY_PIO - feat_pio = "I"; -#endif -#ifdef CONFIG_B43LEGACY_DMA - feat_dma = "D"; -#endif - printk(KERN_INFO "Broadcom 43xx-legacy driver loaded " - "[ Features: %s%s%s%s ]\n", - feat_pci, feat_leds, feat_pio, feat_dma); -} - -static int __init b43legacy_init(void) -{ - int err; - - b43legacy_debugfs_init(); - - err = ssb_driver_register(&b43legacy_ssb_driver); - if (err) - goto err_dfs_exit; - - b43legacy_print_driverinfo(); - - return err; - -err_dfs_exit: - b43legacy_debugfs_exit(); - return err; -} - -static void __exit b43legacy_exit(void) -{ - ssb_driver_unregister(&b43legacy_ssb_driver); - b43legacy_debugfs_exit(); -} - -module_init(b43legacy_init) -module_exit(b43legacy_exit) |