diff options
Diffstat (limited to 'drivers/net/wireless/b43legacy/main.c')
| -rw-r--r-- | drivers/net/wireless/b43legacy/main.c | 164 |
1 files changed, 116 insertions, 48 deletions
diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c index 4f3f0162946..ee202b4f77b 100644 --- a/drivers/net/wireless/b43legacy/main.c +++ b/drivers/net/wireless/b43legacy/main.c @@ -955,23 +955,54 @@ static void b43legacy_write_template_common(struct b43legacy_wldev *dev, 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, u8 rate) + u16 shm_size_offset) { unsigned int i, len, variable_len; const struct ieee80211_mgmt *bcn; const u8 *ie; bool tim_found = 0; + unsigned int rate; + u16 ctl; + int antenna; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon); bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data); len = min((size_t)dev->wl->current_beacon->len, 0x200 - sizeof(struct 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; @@ -1026,7 +1057,7 @@ static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev, __le16 dur; plcp.data = 0; - b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->bitrate); + b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value); dur = ieee80211_generic_frame_duration(dev->wl->hw, dev->wl->vif, size, @@ -1130,10 +1161,82 @@ static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev, 0x200 - sizeof(struct b43legacy_plcp_hdr6)); b43legacy_write_template_common(dev, probe_resp_data, size, ram_offset, - shm_size_offset, rate->bitrate); + 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 = 1; +} + +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 = 1; +} + +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_savedstate &= ~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_savedstate |= 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 = 0; + 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, @@ -1143,13 +1246,14 @@ static void b43legacy_beacon_update_trigger_work(struct work_struct *work) mutex_lock(&wl->mutex); dev = wl->current_dev; if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) { - /* Force the microcode to trigger the - * beacon update bottom-half IRQ. */ spin_lock_irq(&wl->irq_lock); - b43legacy_write32(dev, B43legacy_MMIO_MACCMD, - b43legacy_read32(dev, B43legacy_MMIO_MACCMD) - | B43legacy_MACCMD_BEACON0_VALID - | B43legacy_MACCMD_BEACON1_VALID); + /* update beacon right away or defer to irq */ + dev->irq_savedstate = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); + handle_irq_beacon(dev); + /* The handler might have updated the IRQ mask. */ + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, + dev->irq_savedstate); + mmiowb(); spin_unlock_irq(&wl->irq_lock); } mutex_unlock(&wl->mutex); @@ -1198,45 +1302,6 @@ static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev, b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int); } -static void handle_irq_beacon(struct b43legacy_wldev *dev) -{ - struct b43legacy_wl *wl = dev->wl; - u32 cmd; - u32 beacon0_valid, beacon1_valid; - - if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) - return; - - /* This is the bottom half of the asynchronous beacon update. */ - - cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); - beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID); - beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID); - cmd &= ~(B43legacy_MACCMD_BEACON0_VALID | B43legacy_MACCMD_BEACON1_VALID); - - if (!beacon0_valid) { - if (!wl->beacon0_uploaded) { - b43legacy_write_beacon_template(dev, 0x68, - B43legacy_SHM_SH_BTL0, - B43legacy_CCK_RATE_1MB); - b43legacy_write_probe_resp_template(dev, 0x268, - B43legacy_SHM_SH_PRTLEN, - &__b43legacy_ratetable[3]); - wl->beacon0_uploaded = 1; - } - cmd |= B43legacy_MACCMD_BEACON0_VALID; - } else if (!beacon1_valid) { - if (!wl->beacon1_uploaded) { - b43legacy_write_beacon_template(dev, 0x468, - B43legacy_SHM_SH_BTL1, - B43legacy_CCK_RATE_1MB); - wl->beacon1_uploaded = 1; - } - cmd |= B43legacy_MACCMD_BEACON1_VALID; - } - b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); -} - static void handle_irq_ucode_debug(struct b43legacy_wldev *dev) { } @@ -3429,6 +3494,9 @@ static int b43legacy_op_start(struct ieee80211_hw *hw) memset(wl->bssid, 0, ETH_ALEN); memset(wl->mac_addr, 0, ETH_ALEN); wl->filter_flags = 0; + wl->beacon0_uploaded = 0; + wl->beacon1_uploaded = 0; + wl->beacon_templates_virgin = 1; mutex_lock(&wl->mutex); |