| /* |
| |
| Broadcom B43legacy wireless driver |
| |
| Transmission (TX/RX) related functions. |
| |
| Copyright (C) 2005 Martin Langer <martin-langer@gmx.de> |
| Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it> |
| Copyright (C) 2005, 2006 Michael Buesch <mb@bu3sch.de> |
| Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org> |
| Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> |
| Copyright (C) 2007 Larry Finger <Larry.Finger@lwfinger.net> |
| |
| 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 <net/dst.h> |
| |
| #include "xmit.h" |
| #include "phy.h" |
| #include "dma.h" |
| #include "pio.h" |
| |
| |
| /* Extract the bitrate out of a CCK PLCP header. */ |
| static u8 b43legacy_plcp_get_bitrate_idx_cck(struct b43legacy_plcp_hdr6 *plcp) |
| { |
| switch (plcp->raw[0]) { |
| case 0x0A: |
| return 0; |
| case 0x14: |
| return 1; |
| case 0x37: |
| return 2; |
| case 0x6E: |
| return 3; |
| } |
| B43legacy_BUG_ON(1); |
| return -1; |
| } |
| |
| /* Extract the bitrate out of an OFDM PLCP header. */ |
| static u8 b43legacy_plcp_get_bitrate_idx_ofdm(struct b43legacy_plcp_hdr6 *plcp, |
| bool aphy) |
| { |
| int base = aphy ? 0 : 4; |
| |
| switch (plcp->raw[0] & 0xF) { |
| case 0xB: |
| return base + 0; |
| case 0xF: |
| return base + 1; |
| case 0xA: |
| return base + 2; |
| case 0xE: |
| return base + 3; |
| case 0x9: |
| return base + 4; |
| case 0xD: |
| return base + 5; |
| case 0x8: |
| return base + 6; |
| case 0xC: |
| return base + 7; |
| } |
| B43legacy_BUG_ON(1); |
| return -1; |
| } |
| |
| u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate) |
| { |
| switch (bitrate) { |
| case B43legacy_CCK_RATE_1MB: |
| return 0x0A; |
| case B43legacy_CCK_RATE_2MB: |
| return 0x14; |
| case B43legacy_CCK_RATE_5MB: |
| return 0x37; |
| case B43legacy_CCK_RATE_11MB: |
| return 0x6E; |
| } |
| B43legacy_BUG_ON(1); |
| return 0; |
| } |
| |
| u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate) |
| { |
| switch (bitrate) { |
| case B43legacy_OFDM_RATE_6MB: |
| return 0xB; |
| case B43legacy_OFDM_RATE_9MB: |
| return 0xF; |
| case B43legacy_OFDM_RATE_12MB: |
| return 0xA; |
| case B43legacy_OFDM_RATE_18MB: |
| return 0xE; |
| case B43legacy_OFDM_RATE_24MB: |
| return 0x9; |
| case B43legacy_OFDM_RATE_36MB: |
| return 0xD; |
| case B43legacy_OFDM_RATE_48MB: |
| return 0x8; |
| case B43legacy_OFDM_RATE_54MB: |
| return 0xC; |
| } |
| B43legacy_BUG_ON(1); |
| return 0; |
| } |
| |
| void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp, |
| const u16 octets, const u8 bitrate) |
| { |
| __le32 *data = &(plcp->data); |
| __u8 *raw = plcp->raw; |
| |
| if (b43legacy_is_ofdm_rate(bitrate)) { |
| u16 d; |
| |
| d = b43legacy_plcp_get_ratecode_ofdm(bitrate); |
| B43legacy_WARN_ON(octets & 0xF000); |
| d |= (octets << 5); |
| *data = cpu_to_le32(d); |
| } else { |
| u32 plen; |
| |
| plen = octets * 16 / bitrate; |
| if ((octets * 16 % bitrate) > 0) { |
| plen++; |
| if ((bitrate == B43legacy_CCK_RATE_11MB) |
| && ((octets * 8 % 11) < 4)) |
| raw[1] = 0x84; |
| else |
| raw[1] = 0x04; |
| } else |
| raw[1] = 0x04; |
| *data |= cpu_to_le32(plen << 16); |
| raw[0] = b43legacy_plcp_get_ratecode_cck(bitrate); |
| } |
| } |
| |
| static u8 b43legacy_calc_fallback_rate(u8 bitrate) |
| { |
| switch (bitrate) { |
| case B43legacy_CCK_RATE_1MB: |
| return B43legacy_CCK_RATE_1MB; |
| case B43legacy_CCK_RATE_2MB: |
| return B43legacy_CCK_RATE_1MB; |
| case B43legacy_CCK_RATE_5MB: |
| return B43legacy_CCK_RATE_2MB; |
| case B43legacy_CCK_RATE_11MB: |
| return B43legacy_CCK_RATE_5MB; |
| case B43legacy_OFDM_RATE_6MB: |
| return B43legacy_CCK_RATE_5MB; |
| case B43legacy_OFDM_RATE_9MB: |
| return B43legacy_OFDM_RATE_6MB; |
| case B43legacy_OFDM_RATE_12MB: |
| return B43legacy_OFDM_RATE_9MB; |
| case B43legacy_OFDM_RATE_18MB: |
| return B43legacy_OFDM_RATE_12MB; |
| case B43legacy_OFDM_RATE_24MB: |
| return B43legacy_OFDM_RATE_18MB; |
| case B43legacy_OFDM_RATE_36MB: |
| return B43legacy_OFDM_RATE_24MB; |
| case B43legacy_OFDM_RATE_48MB: |
| return B43legacy_OFDM_RATE_36MB; |
| case B43legacy_OFDM_RATE_54MB: |
| return B43legacy_OFDM_RATE_48MB; |
| } |
| B43legacy_BUG_ON(1); |
| return 0; |
| } |
| |
| static int generate_txhdr_fw3(struct b43legacy_wldev *dev, |
| struct b43legacy_txhdr_fw3 *txhdr, |
| const unsigned char *fragment_data, |
| unsigned int fragment_len, |
| struct ieee80211_tx_info *info, |
| u16 cookie) |
| { |
| const struct ieee80211_hdr *wlhdr; |
| int use_encryption = !!info->control.hw_key; |
| u8 rate; |
| struct ieee80211_rate *rate_fb; |
| int rate_ofdm; |
| int rate_fb_ofdm; |
| unsigned int plcp_fragment_len; |
| u32 mac_ctl = 0; |
| u16 phy_ctl = 0; |
| struct ieee80211_rate *tx_rate; |
| struct ieee80211_tx_rate *rates; |
| |
| wlhdr = (const struct ieee80211_hdr *)fragment_data; |
| |
| memset(txhdr, 0, sizeof(*txhdr)); |
| |
| tx_rate = ieee80211_get_tx_rate(dev->wl->hw, info); |
| |
| rate = tx_rate->hw_value; |
| rate_ofdm = b43legacy_is_ofdm_rate(rate); |
| rate_fb = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : tx_rate; |
| rate_fb_ofdm = b43legacy_is_ofdm_rate(rate_fb->hw_value); |
| |
| txhdr->mac_frame_ctl = wlhdr->frame_control; |
| memcpy(txhdr->tx_receiver, wlhdr->addr1, 6); |
| |
| /* Calculate duration for fallback rate */ |
| if ((rate_fb->hw_value == rate) || |
| (wlhdr->duration_id & cpu_to_le16(0x8000)) || |
| (wlhdr->duration_id == cpu_to_le16(0))) { |
| /* If the fallback rate equals the normal rate or the |
| * dur_id field contains an AID, CFP magic or 0, |
| * use the original dur_id field. */ |
| txhdr->dur_fb = wlhdr->duration_id; |
| } else { |
| txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw, |
| info->control.vif, |
| fragment_len, |
| rate_fb); |
| } |
| |
| plcp_fragment_len = fragment_len + FCS_LEN; |
| if (use_encryption) { |
| u8 key_idx = info->control.hw_key->hw_key_idx; |
| struct b43legacy_key *key; |
| int wlhdr_len; |
| size_t iv_len; |
| |
| B43legacy_WARN_ON(key_idx >= dev->max_nr_keys); |
| key = &(dev->key[key_idx]); |
| |
| if (key->enabled) { |
| /* Hardware appends ICV. */ |
| plcp_fragment_len += info->control.hw_key->icv_len; |
| |
| key_idx = b43legacy_kidx_to_fw(dev, key_idx); |
| mac_ctl |= (key_idx << B43legacy_TX4_MAC_KEYIDX_SHIFT) & |
| B43legacy_TX4_MAC_KEYIDX; |
| mac_ctl |= (key->algorithm << |
| B43legacy_TX4_MAC_KEYALG_SHIFT) & |
| B43legacy_TX4_MAC_KEYALG; |
| wlhdr_len = ieee80211_hdrlen(wlhdr->frame_control); |
| iv_len = min((size_t)info->control.hw_key->iv_len, |
| ARRAY_SIZE(txhdr->iv)); |
| memcpy(txhdr->iv, ((u8 *)wlhdr) + wlhdr_len, iv_len); |
| } else { |
| /* This key is invalid. This might only happen |
| * in a short timeframe after machine resume before |
| * we were able to reconfigure keys. |
| * Drop this packet completely. Do not transmit it |
| * unencrypted to avoid leaking information. */ |
| return -ENOKEY; |
| } |
| } |
| b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *) |
| (&txhdr->plcp), plcp_fragment_len, |
| rate); |
| b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *) |
| (&txhdr->plcp_fb), plcp_fragment_len, |
| rate_fb->hw_value); |
| |
| /* PHY TX Control word */ |
| if (rate_ofdm) |
| phy_ctl |= B43legacy_TX4_PHY_ENC_OFDM; |
| if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) |
| phy_ctl |= B43legacy_TX4_PHY_SHORTPRMBL; |
| switch (info->antenna_sel_tx) { |
| case 0: |
| phy_ctl |= B43legacy_TX4_PHY_ANTLAST; |
| break; |
| case 1: |
| phy_ctl |= B43legacy_TX4_PHY_ANT0; |
| break; |
| case 2: |
| phy_ctl |= B43legacy_TX4_PHY_ANT1; |
| break; |
| default: |
| B43legacy_BUG_ON(1); |
| } |
| |
| /* MAC control */ |
| rates = info->control.rates; |
| if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) |
| mac_ctl |= B43legacy_TX4_MAC_ACK; |
| if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) |
| mac_ctl |= B43legacy_TX4_MAC_HWSEQ; |
| if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) |
| mac_ctl |= B43legacy_TX4_MAC_STMSDU; |
| if (rate_fb_ofdm) |
| mac_ctl |= B43legacy_TX4_MAC_FALLBACKOFDM; |
| |
| /* Overwrite rates[0].count to make the retry calculation |
| * in the tx status easier. need the actual retry limit to |
| * detect whether the fallback rate was used. |
| */ |
| if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || |
| (rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) { |
| rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count; |
| mac_ctl |= B43legacy_TX4_MAC_LONGFRAME; |
| } else { |
| rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count; |
| } |
| |
| /* Generate the RTS or CTS-to-self frame */ |
| if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || |
| (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) { |
| unsigned int len; |
| struct ieee80211_hdr *hdr; |
| int rts_rate; |
| int rts_rate_fb; |
| int rts_rate_ofdm; |
| int rts_rate_fb_ofdm; |
| |
| rts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info)->hw_value; |
| rts_rate_ofdm = b43legacy_is_ofdm_rate(rts_rate); |
| rts_rate_fb = b43legacy_calc_fallback_rate(rts_rate); |
| rts_rate_fb_ofdm = b43legacy_is_ofdm_rate(rts_rate_fb); |
| if (rts_rate_fb_ofdm) |
| mac_ctl |= B43legacy_TX4_MAC_CTSFALLBACKOFDM; |
| |
| if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { |
| ieee80211_ctstoself_get(dev->wl->hw, |
| info->control.vif, |
| fragment_data, |
| fragment_len, info, |
| (struct ieee80211_cts *) |
| (txhdr->rts_frame)); |
| mac_ctl |= B43legacy_TX4_MAC_SENDCTS; |
| len = sizeof(struct ieee80211_cts); |
| } else { |
| ieee80211_rts_get(dev->wl->hw, |
| info->control.vif, |
| fragment_data, fragment_len, info, |
| (struct ieee80211_rts *) |
| (txhdr->rts_frame)); |
| mac_ctl |= B43legacy_TX4_MAC_SENDRTS; |
| len = sizeof(struct ieee80211_rts); |
| } |
| len += FCS_LEN; |
| b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *) |
| (&txhdr->rts_plcp), |
| len, rts_rate); |
| b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *) |
| (&txhdr->rts_plcp_fb), |
| len, rts_rate_fb); |
| hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame); |
| txhdr->rts_dur_fb = hdr->duration_id; |
| } |
| |
| /* Magic cookie */ |
| txhdr->cookie = cpu_to_le16(cookie); |
| |
| /* Apply the bitfields */ |
| txhdr->mac_ctl = cpu_to_le32(mac_ctl); |
| txhdr->phy_ctl = cpu_to_le16(phy_ctl); |
| |
| return 0; |
| } |
| |
| int b43legacy_generate_txhdr(struct b43legacy_wldev *dev, |
| u8 *txhdr, |
| const unsigned char *fragment_data, |
| unsigned int fragment_len, |
| struct ieee80211_tx_info *info, |
| u16 cookie) |
| { |
| return generate_txhdr_fw3(dev, (struct b43legacy_txhdr_fw3 *)txhdr, |
| fragment_data, fragment_len, |
| info, cookie); |
| } |
| |
| static s8 b43legacy_rssi_postprocess(struct b43legacy_wldev *dev, |
| u8 in_rssi, int ofdm, |
| int adjust_2053, int adjust_2050) |
| { |
| struct b43legacy_phy *phy = &dev->phy; |
| s32 tmp; |
| |
| switch (phy->radio_ver) { |
| case 0x2050: |
| if (ofdm) { |
| tmp = in_rssi; |
| if (tmp > 127) |
| tmp -= 256; |
| tmp *= 73; |
| tmp /= 64; |
| if (adjust_2050) |
| tmp += 25; |
| else |
| tmp -= 3; |
| } else { |
| if (dev->dev->bus->sprom.boardflags_lo |
| & B43legacy_BFL_RSSI) { |
| if (in_rssi > 63) |
| in_rssi = 63; |
| tmp = phy->nrssi_lt[in_rssi]; |
| tmp = 31 - tmp; |
| tmp *= -131; |
| tmp /= 128; |
| tmp -= 57; |
| } else { |
| tmp = in_rssi; |
| tmp = 31 - tmp; |
| tmp *= -149; |
| tmp /= 128; |
| tmp -= 68; |
| } |
| if (phy->type == B43legacy_PHYTYPE_G && |
| adjust_2050) |
| tmp += 25; |
| } |
| break; |
| case 0x2060: |
| if (in_rssi > 127) |
| tmp = in_rssi - 256; |
| else |
| tmp = in_rssi; |
| break; |
| default: |
| tmp = in_rssi; |
| tmp -= 11; |
| tmp *= 103; |
| tmp /= 64; |
| if (adjust_2053) |
| tmp -= 109; |
| else |
| tmp -= 83; |
| } |
| |
| return (s8)tmp; |
| } |
| |
| void b43legacy_rx(struct b43legacy_wldev *dev, |
| struct sk_buff *skb, |
| const void *_rxhdr) |
| { |
| struct ieee80211_rx_status status; |
| struct b43legacy_plcp_hdr6 *plcp; |
| struct ieee80211_hdr *wlhdr; |
| const struct b43legacy_rxhdr_fw3 *rxhdr = _rxhdr; |
| __le16 fctl; |
| u16 phystat0; |
| u16 phystat3; |
| u16 chanstat; |
| u16 mactime; |
| u32 macstat; |
| u16 chanid; |
| u8 jssi; |
| int padding; |
| |
| memset(&status, 0, sizeof(status)); |
| |
| /* Get metadata about the frame from the header. */ |
| phystat0 = le16_to_cpu(rxhdr->phy_status0); |
| phystat3 = le16_to_cpu(rxhdr->phy_status3); |
| jssi = rxhdr->jssi; |
| macstat = le16_to_cpu(rxhdr->mac_status); |
| mactime = le16_to_cpu(rxhdr->mac_time); |
| chanstat = le16_to_cpu(rxhdr->channel); |
| |
| if (macstat & B43legacy_RX_MAC_FCSERR) |
| dev->wl->ieee_stats.dot11FCSErrorCount++; |
| |
| /* Skip PLCP and padding */ |
| padding = (macstat & B43legacy_RX_MAC_PADDING) ? 2 : 0; |
| if (unlikely(skb->len < (sizeof(struct b43legacy_plcp_hdr6) + |
| padding))) { |
| b43legacydbg(dev->wl, "RX: Packet size underrun (1)\n"); |
| goto drop; |
| } |
| plcp = (struct b43legacy_plcp_hdr6 *)(skb->data + padding); |
| skb_pull(skb, sizeof(struct b43legacy_plcp_hdr6) + padding); |
| /* The skb contains the Wireless Header + payload data now */ |
| if (unlikely(skb->len < (2+2+6/*minimum hdr*/ + FCS_LEN))) { |
| b43legacydbg(dev->wl, "RX: Packet size underrun (2)\n"); |
| goto drop; |
| } |
| wlhdr = (struct ieee80211_hdr *)(skb->data); |
| fctl = wlhdr->frame_control; |
| |
| if ((macstat & B43legacy_RX_MAC_DEC) && |
| !(macstat & B43legacy_RX_MAC_DECERR)) { |
| unsigned int keyidx; |
| int wlhdr_len; |
| int iv_len; |
| int icv_len; |
| |
| keyidx = ((macstat & B43legacy_RX_MAC_KEYIDX) |
| >> B43legacy_RX_MAC_KEYIDX_SHIFT); |
| /* We must adjust the key index here. We want the "physical" |
| * key index, but the ucode passed it slightly different. |
| */ |
| keyidx = b43legacy_kidx_to_raw(dev, keyidx); |
| B43legacy_WARN_ON(keyidx >= dev->max_nr_keys); |
| |
| if (dev->key[keyidx].algorithm != B43legacy_SEC_ALGO_NONE) { |
| /* Remove PROTECTED flag to mark it as decrypted. */ |
| B43legacy_WARN_ON(!ieee80211_has_protected(fctl)); |
| fctl &= ~cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| wlhdr->frame_control = fctl; |
| |
| wlhdr_len = ieee80211_hdrlen(fctl); |
| if (unlikely(skb->len < (wlhdr_len + 3))) { |
| b43legacydbg(dev->wl, "RX: Packet size" |
| " underrun3\n"); |
| goto drop; |
| } |
| if (skb->data[wlhdr_len + 3] & (1 << 5)) { |
| /* The Ext-IV Bit is set in the "KeyID" |
| * octet of the IV. |
| */ |
| iv_len = 8; |
| icv_len = 8; |
| } else { |
| iv_len = 4; |
| icv_len = 4; |
| } |
| if (unlikely(skb->len < (wlhdr_len + iv_len + |
| icv_len))) { |
| b43legacydbg(dev->wl, "RX: Packet size" |
| " underrun4\n"); |
| goto drop; |
| } |
| /* Remove the IV */ |
| memmove(skb->data + iv_len, skb->data, wlhdr_len); |
| skb_pull(skb, iv_len); |
| /* Remove the ICV */ |
| skb_trim(skb, skb->len - icv_len); |
| |
| status.flag |= RX_FLAG_DECRYPTED; |
| } |
| } |
| |
| status.signal = b43legacy_rssi_postprocess(dev, jssi, |
| (phystat0 & B43legacy_RX_PHYST0_OFDM), |
| (phystat0 & B43legacy_RX_PHYST0_GAINCTL), |
| (phystat3 & B43legacy_RX_PHYST3_TRSTATE)); |
| status.noise = dev->stats.link_noise; |
| status.qual = (jssi * 100) / B43legacy_RX_MAX_SSI; |
| /* change to support A PHY */ |
| if (phystat0 & B43legacy_RX_PHYST0_OFDM) |
| status.rate_idx = b43legacy_plcp_get_bitrate_idx_ofdm(plcp, false); |
| else |
| status.rate_idx = b43legacy_plcp_get_bitrate_idx_cck(plcp); |
| status.antenna = !!(phystat0 & B43legacy_RX_PHYST0_ANT); |
| |
| /* |
| * All frames on monitor interfaces and beacons always need a full |
| * 64-bit timestamp. Monitor interfaces need it for diagnostic |
| * purposes and beacons for IBSS merging. |
| * This code assumes we get to process the packet within 16 bits |
| * of timestamp, i.e. about 65 milliseconds after the PHY received |
| * the first symbol. |
| */ |
| if (ieee80211_is_beacon(fctl) || dev->wl->radiotap_enabled) { |
| u16 low_mactime_now; |
| |
| b43legacy_tsf_read(dev, &status.mactime); |
| low_mactime_now = status.mactime; |
| status.mactime = status.mactime & ~0xFFFFULL; |
| status.mactime += mactime; |
| if (low_mactime_now <= mactime) |
| status.mactime -= 0x10000; |
| status.flag |= RX_FLAG_TSFT; |
| } |
| |
| chanid = (chanstat & B43legacy_RX_CHAN_ID) >> |
| B43legacy_RX_CHAN_ID_SHIFT; |
| switch (chanstat & B43legacy_RX_CHAN_PHYTYPE) { |
| case B43legacy_PHYTYPE_B: |
| case B43legacy_PHYTYPE_G: |
| status.band = IEEE80211_BAND_2GHZ; |
| status.freq = chanid + 2400; |
| break; |
| default: |
| b43legacywarn(dev->wl, "Unexpected value for chanstat (0x%X)\n", |
| chanstat); |
| } |
| |
| dev->stats.last_rx = jiffies; |
| memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); |
| ieee80211_rx_irqsafe(dev->wl->hw, skb); |
| |
| return; |
| drop: |
| b43legacydbg(dev->wl, "RX: Packet dropped\n"); |
| dev_kfree_skb_any(skb); |
| } |
| |
| void b43legacy_handle_txstatus(struct b43legacy_wldev *dev, |
| const struct b43legacy_txstatus *status) |
| { |
| b43legacy_debugfs_log_txstat(dev, status); |
| |
| if (status->intermediate) |
| return; |
| if (status->for_ampdu) |
| return; |
| if (!status->acked) |
| dev->wl->ieee_stats.dot11ACKFailureCount++; |
| if (status->rts_count) { |
| if (status->rts_count == 0xF) /* FIXME */ |
| dev->wl->ieee_stats.dot11RTSFailureCount++; |
| else |
| dev->wl->ieee_stats.dot11RTSSuccessCount++; |
| } |
| |
| if (b43legacy_using_pio(dev)) |
| b43legacy_pio_handle_txstatus(dev, status); |
| else |
| b43legacy_dma_handle_txstatus(dev, status); |
| } |
| |
| /* Handle TX status report as received through DMA/PIO queues */ |
| void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev, |
| const struct b43legacy_hwtxstatus *hw) |
| { |
| struct b43legacy_txstatus status; |
| u8 tmp; |
| |
| status.cookie = le16_to_cpu(hw->cookie); |
| status.seq = le16_to_cpu(hw->seq); |
| status.phy_stat = hw->phy_stat; |
| tmp = hw->count; |
| status.frame_count = (tmp >> 4); |
| status.rts_count = (tmp & 0x0F); |
| tmp = hw->flags << 1; |
| status.supp_reason = ((tmp & 0x1C) >> 2); |
| status.pm_indicated = !!(tmp & 0x80); |
| status.intermediate = !!(tmp & 0x40); |
| status.for_ampdu = !!(tmp & 0x20); |
| status.acked = !!(tmp & 0x02); |
| |
| b43legacy_handle_txstatus(dev, &status); |
| } |
| |
| /* Stop any TX operation on the device (suspend the hardware queues) */ |
| void b43legacy_tx_suspend(struct b43legacy_wldev *dev) |
| { |
| if (b43legacy_using_pio(dev)) |
| b43legacy_pio_freeze_txqueues(dev); |
| else |
| b43legacy_dma_tx_suspend(dev); |
| } |
| |
| /* Resume any TX operation on the device (resume the hardware queues) */ |
| void b43legacy_tx_resume(struct b43legacy_wldev *dev) |
| { |
| if (b43legacy_using_pio(dev)) |
| b43legacy_pio_thaw_txqueues(dev); |
| else |
| b43legacy_dma_tx_resume(dev); |
| } |
| |
| /* Initialize the QoS parameters */ |
| void b43legacy_qos_init(struct b43legacy_wldev *dev) |
| { |
| /* FIXME: This function must probably be called from the mac80211 |
| * config callback. */ |
| return; |
| |
| b43legacy_hf_write(dev, b43legacy_hf_read(dev) | B43legacy_HF_EDCF); |
| /* FIXME kill magic */ |
| b43legacy_write16(dev, 0x688, |
| b43legacy_read16(dev, 0x688) | 0x4); |
| |
| |
| /*TODO: We might need some stack support here to get the values. */ |
| } |