diff options
Diffstat (limited to 'drivers/net/wireless/b43/xmit.c')
| -rw-r--r-- | drivers/net/wireless/b43/xmit.c | 591 |
1 files changed, 407 insertions, 184 deletions
diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c index 7caa26eb410..6e6ef3fc224 100644 --- a/drivers/net/wireless/b43/xmit.c +++ b/drivers/net/wireless/b43/xmit.c @@ -6,7 +6,7 @@ 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, 2006 Michael Buesch <m@bues.ch> Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org> Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> @@ -28,50 +28,81 @@ */ #include "xmit.h" -#include "phy.h" +#include "phy_common.h" #include "dma.h" +#include "pio.h" + +static const struct b43_tx_legacy_rate_phy_ctl_entry b43_tx_legacy_rate_phy_ctl[] = { + { B43_CCK_RATE_1MB, 0x0, 0x0 }, + { B43_CCK_RATE_2MB, 0x0, 0x1 }, + { B43_CCK_RATE_5MB, 0x0, 0x2 }, + { B43_CCK_RATE_11MB, 0x0, 0x3 }, + { B43_OFDM_RATE_6MB, B43_TXH_PHY1_CRATE_1_2, B43_TXH_PHY1_MODUL_BPSK }, + { B43_OFDM_RATE_9MB, B43_TXH_PHY1_CRATE_3_4, B43_TXH_PHY1_MODUL_BPSK }, + { B43_OFDM_RATE_12MB, B43_TXH_PHY1_CRATE_1_2, B43_TXH_PHY1_MODUL_QPSK }, + { B43_OFDM_RATE_18MB, B43_TXH_PHY1_CRATE_3_4, B43_TXH_PHY1_MODUL_QPSK }, + { B43_OFDM_RATE_24MB, B43_TXH_PHY1_CRATE_1_2, B43_TXH_PHY1_MODUL_QAM16 }, + { B43_OFDM_RATE_36MB, B43_TXH_PHY1_CRATE_3_4, B43_TXH_PHY1_MODUL_QAM16 }, + { B43_OFDM_RATE_48MB, B43_TXH_PHY1_CRATE_2_3, B43_TXH_PHY1_MODUL_QAM64 }, + { B43_OFDM_RATE_54MB, B43_TXH_PHY1_CRATE_3_4, B43_TXH_PHY1_MODUL_QAM64 }, +}; + +static const struct b43_tx_legacy_rate_phy_ctl_entry * +b43_tx_legacy_rate_phy_ctl_ent(u8 bitrate) +{ + const struct b43_tx_legacy_rate_phy_ctl_entry *e; + unsigned int i; + for (i = 0; i < ARRAY_SIZE(b43_tx_legacy_rate_phy_ctl); i++) { + e = &(b43_tx_legacy_rate_phy_ctl[i]); + if (e->bitrate == bitrate) + return e; + } -/* Extract the bitrate out of a CCK PLCP header. */ -static u8 b43_plcp_get_bitrate_cck(struct b43_plcp_hdr6 *plcp) + B43_WARN_ON(1); + return NULL; +} + +/* Extract the bitrate index out of a CCK PLCP header. */ +static int b43_plcp_get_bitrate_idx_cck(struct b43_plcp_hdr6 *plcp) { switch (plcp->raw[0]) { case 0x0A: - return B43_CCK_RATE_1MB; + return 0; case 0x14: - return B43_CCK_RATE_2MB; + return 1; case 0x37: - return B43_CCK_RATE_5MB; + return 2; case 0x6E: - return B43_CCK_RATE_11MB; + return 3; } - B43_WARN_ON(1); - return 0; + return -1; } -/* Extract the bitrate out of an OFDM PLCP header. */ -static u8 b43_plcp_get_bitrate_ofdm(struct b43_plcp_hdr6 *plcp) +/* Extract the bitrate index out of an OFDM PLCP header. */ +static int b43_plcp_get_bitrate_idx_ofdm(struct b43_plcp_hdr6 *plcp, bool aphy) { + int base = aphy ? 0 : 4; + switch (plcp->raw[0] & 0xF) { case 0xB: - return B43_OFDM_RATE_6MB; + return base + 0; case 0xF: - return B43_OFDM_RATE_9MB; + return base + 1; case 0xA: - return B43_OFDM_RATE_12MB; + return base + 2; case 0xE: - return B43_OFDM_RATE_18MB; + return base + 3; case 0x9: - return B43_OFDM_RATE_24MB; + return base + 4; case 0xD: - return B43_OFDM_RATE_36MB; + return base + 5; case 0x8: - return B43_OFDM_RATE_48MB; + return base + 6; case 0xC: - return B43_OFDM_RATE_54MB; + return base + 7; } - B43_WARN_ON(1); - return 0; + return -1; } u8 b43_plcp_get_ratecode_cck(const u8 bitrate) @@ -117,7 +148,6 @@ u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate) void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp, const u16 octets, const u8 bitrate) { - __le32 *data = &(plcp->data); __u8 *raw = plcp->raw; if (b43_is_ofdm_rate(bitrate)) { @@ -126,7 +156,7 @@ void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp, d = b43_plcp_get_ratecode_ofdm(bitrate); B43_WARN_ON(octets & 0xF000); d |= (octets << 5); - *data = cpu_to_le32(d); + plcp->data = cpu_to_le32(d); } else { u32 plen; @@ -140,11 +170,40 @@ void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp, raw[1] = 0x04; } else raw[1] = 0x04; - *data |= cpu_to_le32(plen << 16); + plcp->data |= cpu_to_le32(plen << 16); raw[0] = b43_plcp_get_ratecode_cck(bitrate); } } +/* TODO: verify if needed for SSLPN or LCN */ +static u16 b43_generate_tx_phy_ctl1(struct b43_wldev *dev, u8 bitrate) +{ + const struct b43_phy *phy = &dev->phy; + const struct b43_tx_legacy_rate_phy_ctl_entry *e; + u16 control = 0; + u16 bw; + + if (phy->type == B43_PHYTYPE_LP) + bw = B43_TXH_PHY1_BW_20; + else /* FIXME */ + bw = B43_TXH_PHY1_BW_20; + + if (0) { /* FIXME: MIMO */ + } else if (b43_is_cck_rate(bitrate) && phy->type != B43_PHYTYPE_LP) { + control = bw; + } else { + control = bw; + e = b43_tx_legacy_rate_phy_ctl_ent(bitrate); + if (e) { + control |= e->coding_rate; + control |= e->modulation; + } + control |= B43_TXH_PHY1_MODE_SISO; + } + + return control; +} + static u8 b43_calc_fallback_rate(u8 bitrate) { switch (bitrate) { @@ -180,29 +239,38 @@ static u8 b43_calc_fallback_rate(u8 bitrate) /* Generate a TX data header. */ int b43_generate_txhdr(struct b43_wldev *dev, u8 *_txhdr, - const unsigned char *fragment_data, - unsigned int fragment_len, - const struct ieee80211_tx_control *txctl, + struct sk_buff *skb_frag, + struct ieee80211_tx_info *info, u16 cookie) { + const unsigned char *fragment_data = skb_frag->data; + unsigned int fragment_len = skb_frag->len; struct b43_txhdr *txhdr = (struct b43_txhdr *)_txhdr; const struct b43_phy *phy = &dev->phy; const struct ieee80211_hdr *wlhdr = (const struct ieee80211_hdr *)fragment_data; - int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)); - u16 fctl = le16_to_cpu(wlhdr->frame_control); + int use_encryption = !!info->control.hw_key; + __le16 fctl = wlhdr->frame_control; + struct ieee80211_rate *fbrate; u8 rate, rate_fb; int rate_ofdm, rate_fb_ofdm; unsigned int plcp_fragment_len; u32 mac_ctl = 0; u16 phy_ctl = 0; + bool fill_phy_ctl1 = (phy->type == B43_PHYTYPE_LP || + phy->type == B43_PHYTYPE_N || + phy->type == B43_PHYTYPE_HT); u8 extra_ft = 0; + struct ieee80211_rate *txrate; + struct ieee80211_tx_rate *rates; memset(txhdr, 0, sizeof(*txhdr)); - rate = txctl->tx_rate; + txrate = ieee80211_get_tx_rate(dev->wl->hw, info); + rate = txrate ? txrate->hw_value : B43_CCK_RATE_1MB; rate_ofdm = b43_is_ofdm_rate(rate); - rate_fb = (txctl->alt_retry_rate == -1) ? rate : txctl->alt_retry_rate; + fbrate = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : txrate; + rate_fb = fbrate->hw_value; rate_fb_ofdm = b43_is_ofdm_rate(rate_fb); if (rate_ofdm) @@ -210,7 +278,7 @@ int b43_generate_txhdr(struct b43_wldev *dev, else txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate); txhdr->mac_frame_ctl = wlhdr->frame_control; - memcpy(txhdr->tx_receiver, wlhdr->addr1, 6); + memcpy(txhdr->tx_receiver, wlhdr->addr1, ETH_ALEN); /* Calculate duration for fallback rate */ if ((rate_fb == rate) || @@ -221,21 +289,19 @@ int b43_generate_txhdr(struct b43_wldev *dev, * use the original dur_id field. */ txhdr->dur_fb = wlhdr->duration_id; } else { - int fbrate_base100kbps = B43_RATE_TO_BASE100KBPS(rate_fb); - txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw, - txctl->vif, - fragment_len, - fbrate_base100kbps); + txhdr->dur_fb = ieee80211_generic_frame_duration( + dev->wl->hw, info->control.vif, info->band, + fragment_len, fbrate); } plcp_fragment_len = fragment_len + FCS_LEN; if (use_encryption) { - u8 key_idx = (u16) (txctl->key_idx); + u8 key_idx = info->control.hw_key->hw_key_idx; struct b43_key *key; int wlhdr_len; size_t iv_len; - B43_WARN_ON(key_idx >= dev->max_nr_keys); + B43_WARN_ON(key_idx >= ARRAY_SIZE(dev->key)); key = &(dev->key[key_idx]); if (unlikely(!key->keyconf)) { @@ -248,24 +314,47 @@ int b43_generate_txhdr(struct b43_wldev *dev, } /* Hardware appends ICV. */ - plcp_fragment_len += txctl->icv_len; + plcp_fragment_len += info->control.hw_key->icv_len; key_idx = b43_kidx_to_fw(dev, key_idx); mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) & B43_TXH_MAC_KEYIDX; mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) & B43_TXH_MAC_KEYALG; - wlhdr_len = ieee80211_get_hdrlen(fctl); - iv_len = min((size_t) txctl->iv_len, - ARRAY_SIZE(txhdr->iv)); - memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len); + wlhdr_len = ieee80211_hdrlen(fctl); + if (key->algorithm == B43_SEC_ALGO_TKIP) { + u16 phase1key[5]; + int i; + /* we give the phase1key and iv16 here, the key is stored in + * shm. With that the hardware can do phase 2 and encryption. + */ + ieee80211_get_tkip_p1k(info->control.hw_key, skb_frag, phase1key); + /* phase1key is in host endian. Copy to little-endian txhdr->iv. */ + for (i = 0; i < 5; i++) { + txhdr->iv[i * 2 + 0] = phase1key[i]; + txhdr->iv[i * 2 + 1] = phase1key[i] >> 8; + } + /* iv16 */ + memcpy(txhdr->iv + 10, ((u8 *) wlhdr) + wlhdr_len, 3); + } else { + iv_len = min_t(size_t, info->control.hw_key->iv_len, + ARRAY_SIZE(txhdr->iv)); + memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len); + } } - if (b43_is_old_txhdr_format(dev)) { - b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->old_format.plcp), + switch (dev->fw.hdr_format) { + case B43_FW_HDR_598: + b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_598.plcp), plcp_fragment_len, rate); - } else { - b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->new_format.plcp), + break; + case B43_FW_HDR_351: + b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_351.plcp), plcp_fragment_len, rate); + break; + case B43_FW_HDR_410: + b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_410.plcp), + plcp_fragment_len, rate); + break; } b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb), plcp_fragment_len, rate_fb); @@ -287,10 +376,10 @@ int b43_generate_txhdr(struct b43_wldev *dev, phy_ctl |= B43_TXH_PHY_ENC_OFDM; else phy_ctl |= B43_TXH_PHY_ENC_CCK; - if (dev->short_preamble) + if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) phy_ctl |= B43_TXH_PHY_SHORTPRMBL; - switch (b43_ieee80211_antenna_sanitize(dev, txctl->antenna_sel_tx)) { + switch (b43_ieee80211_antenna_sanitize(dev, 0)) { case 0: /* Default */ phy_ctl |= B43_TXH_PHY_ANT01AUTO; break; @@ -310,83 +399,125 @@ int b43_generate_txhdr(struct b43_wldev *dev, B43_WARN_ON(1); } + rates = info->control.rates; /* MAC control */ - if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK)) + if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) mac_ctl |= B43_TXH_MAC_ACK; - if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) && - ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL))) + /* use hardware sequence counter as the non-TID counter */ + if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) mac_ctl |= B43_TXH_MAC_HWSEQ; - if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT) + if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) mac_ctl |= B43_TXH_MAC_STMSDU; - if (phy->type == B43_PHYTYPE_A) + if (!phy->gmode) mac_ctl |= B43_TXH_MAC_5GHZ; - if (txctl->flags & IEEE80211_TXCTL_LONG_RETRY_LIMIT) + + /* 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 |= B43_TXH_MAC_LONGFRAME; + } else { + rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count; + } /* Generate the RTS or CTS-to-self frame */ - if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) || - (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) { + 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; + struct ieee80211_hdr *uninitialized_var(hdr); int rts_rate, rts_rate_fb; int rts_rate_ofdm, rts_rate_fb_ofdm; - struct b43_plcp_hdr6 *plcp; + struct b43_plcp_hdr6 *uninitialized_var(plcp); + struct ieee80211_rate *rts_cts_rate; + + rts_cts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info); - rts_rate = txctl->rts_cts_rate; + rts_rate = rts_cts_rate ? rts_cts_rate->hw_value : B43_CCK_RATE_1MB; rts_rate_ofdm = b43_is_ofdm_rate(rts_rate); rts_rate_fb = b43_calc_fallback_rate(rts_rate); rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb); - if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) { - struct ieee80211_cts *cts; + if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { + struct ieee80211_cts *uninitialized_var(cts); - if (b43_is_old_txhdr_format(dev)) { + switch (dev->fw.hdr_format) { + case B43_FW_HDR_598: cts = (struct ieee80211_cts *) - (txhdr->old_format.rts_frame); - } else { + (txhdr->format_598.rts_frame); + break; + case B43_FW_HDR_351: + cts = (struct ieee80211_cts *) + (txhdr->format_351.rts_frame); + break; + case B43_FW_HDR_410: cts = (struct ieee80211_cts *) - (txhdr->new_format.rts_frame); + (txhdr->format_410.rts_frame); + break; } - ieee80211_ctstoself_get(dev->wl->hw, txctl->vif, + ieee80211_ctstoself_get(dev->wl->hw, info->control.vif, fragment_data, fragment_len, - txctl, cts); + info, cts); mac_ctl |= B43_TXH_MAC_SENDCTS; len = sizeof(struct ieee80211_cts); } else { - struct ieee80211_rts *rts; + struct ieee80211_rts *uninitialized_var(rts); - if (b43_is_old_txhdr_format(dev)) { + switch (dev->fw.hdr_format) { + case B43_FW_HDR_598: rts = (struct ieee80211_rts *) - (txhdr->old_format.rts_frame); - } else { + (txhdr->format_598.rts_frame); + break; + case B43_FW_HDR_351: + rts = (struct ieee80211_rts *) + (txhdr->format_351.rts_frame); + break; + case B43_FW_HDR_410: rts = (struct ieee80211_rts *) - (txhdr->new_format.rts_frame); + (txhdr->format_410.rts_frame); + break; } - ieee80211_rts_get(dev->wl->hw, txctl->vif, + ieee80211_rts_get(dev->wl->hw, info->control.vif, fragment_data, fragment_len, - txctl, rts); + info, rts); mac_ctl |= B43_TXH_MAC_SENDRTS; len = sizeof(struct ieee80211_rts); } len += FCS_LEN; /* Generate the PLCP headers for the RTS/CTS frame */ - if (b43_is_old_txhdr_format(dev)) - plcp = &txhdr->old_format.rts_plcp; - else - plcp = &txhdr->new_format.rts_plcp; + switch (dev->fw.hdr_format) { + case B43_FW_HDR_598: + plcp = &txhdr->format_598.rts_plcp; + break; + case B43_FW_HDR_351: + plcp = &txhdr->format_351.rts_plcp; + break; + case B43_FW_HDR_410: + plcp = &txhdr->format_410.rts_plcp; + break; + } b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp, len, rts_rate); plcp = &txhdr->rts_plcp_fb; b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp, len, rts_rate_fb); - if (b43_is_old_txhdr_format(dev)) { + switch (dev->fw.hdr_format) { + case B43_FW_HDR_598: hdr = (struct ieee80211_hdr *) - (&txhdr->old_format.rts_frame); - } else { + (&txhdr->format_598.rts_frame); + break; + case B43_FW_HDR_351: + hdr = (struct ieee80211_hdr *) + (&txhdr->format_351.rts_frame); + break; + case B43_FW_HDR_410: hdr = (struct ieee80211_hdr *) - (&txhdr->new_format.rts_frame); + (&txhdr->format_410.rts_frame); + break; } txhdr->rts_dur_fb = hdr->duration_id; @@ -403,13 +534,35 @@ int b43_generate_txhdr(struct b43_wldev *dev, extra_ft |= B43_TXH_EFT_RTSFB_OFDM; else extra_ft |= B43_TXH_EFT_RTSFB_CCK; + + if (rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS && + fill_phy_ctl1) { + txhdr->phy_ctl1_rts = cpu_to_le16( + b43_generate_tx_phy_ctl1(dev, rts_rate)); + txhdr->phy_ctl1_rts_fb = cpu_to_le16( + b43_generate_tx_phy_ctl1(dev, rts_rate_fb)); + } } /* Magic cookie */ - if (b43_is_old_txhdr_format(dev)) - txhdr->old_format.cookie = cpu_to_le16(cookie); - else - txhdr->new_format.cookie = cpu_to_le16(cookie); + switch (dev->fw.hdr_format) { + case B43_FW_HDR_598: + txhdr->format_598.cookie = cpu_to_le16(cookie); + break; + case B43_FW_HDR_351: + txhdr->format_351.cookie = cpu_to_le16(cookie); + break; + case B43_FW_HDR_410: + txhdr->format_410.cookie = cpu_to_le16(cookie); + break; + } + + if (fill_phy_ctl1) { + txhdr->phy_ctl1 = + cpu_to_le16(b43_generate_tx_phy_ctl1(dev, rate)); + txhdr->phy_ctl1_fb = + cpu_to_le16(b43_generate_tx_phy_ctl1(dev, rate_fb)); + } /* Apply the bitfields */ txhdr->mac_ctl = cpu_to_le32(mac_ctl); @@ -424,6 +577,7 @@ static s8 b43_rssi_postprocess(struct b43_wldev *dev, int adjust_2053, int adjust_2050) { struct b43_phy *phy = &dev->phy; + struct b43_phy_g *gphy = phy->g; s32 tmp; switch (phy->radio_ver) { @@ -439,11 +593,12 @@ static s8 b43_rssi_postprocess(struct b43_wldev *dev, else tmp -= 3; } else { - if (dev->dev->bus->sprom. + if (dev->dev->bus_sprom-> boardflags_lo & B43_BFL_RSSI) { if (in_rssi > 63) in_rssi = 63; - tmp = phy->nrssi_lt[in_rssi]; + B43_WARN_ON(phy->type != B43_PHYTYPE_G); + tmp = gphy->nrssi_lt[in_rssi]; tmp = 31 - tmp; tmp *= -131; tmp /= 128; @@ -502,25 +657,42 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr) struct b43_plcp_hdr6 *plcp; struct ieee80211_hdr *wlhdr; const struct b43_rxhdr_fw4 *rxhdr = _rxhdr; - u16 fctl; - u16 phystat0, phystat3, chanstat, mactime; - u32 macstat; + __le16 fctl; + u16 phystat0, phystat3; + u16 uninitialized_var(chanstat), uninitialized_var(mactime); + u32 uninitialized_var(macstat); u16 chanid; - u8 jssi; - int padding; + u16 phytype; + int padding, rate_idx; 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 = le32_to_cpu(rxhdr->mac_status); - mactime = le16_to_cpu(rxhdr->mac_time); - chanstat = le16_to_cpu(rxhdr->channel); + switch (dev->fw.hdr_format) { + case B43_FW_HDR_598: + macstat = le32_to_cpu(rxhdr->format_598.mac_status); + mactime = le16_to_cpu(rxhdr->format_598.mac_time); + chanstat = le16_to_cpu(rxhdr->format_598.channel); + break; + case B43_FW_HDR_410: + case B43_FW_HDR_351: + macstat = le32_to_cpu(rxhdr->format_351.mac_status); + mactime = le16_to_cpu(rxhdr->format_351.mac_time); + chanstat = le16_to_cpu(rxhdr->format_351.channel); + break; + } + phytype = chanstat & B43_RX_CHAN_PHYTYPE; - if (macstat & B43_RX_MAC_FCSERR) + if (unlikely(macstat & B43_RX_MAC_FCSERR)) { dev->wl->ieee_stats.dot11FCSErrorCount++; + status.flag |= RX_FLAG_FAILED_FCS_CRC; + } + if (unlikely(phystat0 & (B43_RX_PHYST0_PLCPHCF | B43_RX_PHYST0_PLCPFV))) + status.flag |= RX_FLAG_FAILED_PLCP_CRC; + if (phystat0 & B43_RX_PHYST0_SHORTPRMBL) + status.flag |= RX_FLAG_SHORTPRE; if (macstat & B43_RX_MAC_DECERR) { /* Decryption with the given key failed. * Drop the packet. We also won't be able to decrypt it with @@ -542,7 +714,7 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr) goto drop; } wlhdr = (struct ieee80211_hdr *)(skb->data); - fctl = le16_to_cpu(wlhdr->frame_control); + fctl = wlhdr->frame_control; if (macstat & B43_RX_MAC_DEC) { unsigned int keyidx; @@ -554,10 +726,10 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr) * key index, but the ucode passed it slightly different. */ keyidx = b43_kidx_to_raw(dev, keyidx); - B43_WARN_ON(keyidx >= dev->max_nr_keys); + B43_WARN_ON(keyidx >= ARRAY_SIZE(dev->key)); if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) { - wlhdr_len = ieee80211_get_hdrlen(fctl); + wlhdr_len = ieee80211_hdrlen(fctl); if (unlikely(skb->len < (wlhdr_len + 3))) { b43dbg(dev->wl, "RX: Packet size underrun (3)\n"); @@ -567,26 +739,55 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr) } } - status.ssi = b43_rssi_postprocess(dev, jssi, - (phystat0 & B43_RX_PHYST0_OFDM), - (phystat0 & B43_RX_PHYST0_GAINCTL), - (phystat3 & B43_RX_PHYST3_TRSTATE)); - status.noise = dev->stats.link_noise; - /* the next line looks wrong, but is what mac80211 wants */ - status.signal = (jssi * 100) / B43_RX_MAX_SSI; + /* Link quality statistics */ + switch (chanstat & B43_RX_CHAN_PHYTYPE) { + case B43_PHYTYPE_HT: + /* TODO: is max the right choice? */ + status.signal = max_t(__s8, + max(rxhdr->phy_ht_power0, rxhdr->phy_ht_power1), + rxhdr->phy_ht_power2); + break; + case B43_PHYTYPE_N: + /* Broadcom has code for min and avg, but always uses max */ + if (rxhdr->power0 == 16 || rxhdr->power0 == 32) + status.signal = max(rxhdr->power1, rxhdr->power2); + else + status.signal = max(rxhdr->power0, rxhdr->power1); + break; + case B43_PHYTYPE_A: + case B43_PHYTYPE_B: + case B43_PHYTYPE_G: + case B43_PHYTYPE_LP: + status.signal = b43_rssi_postprocess(dev, rxhdr->jssi, + (phystat0 & B43_RX_PHYST0_OFDM), + (phystat0 & B43_RX_PHYST0_GAINCTL), + (phystat3 & B43_RX_PHYST3_TRSTATE)); + break; + } + if (phystat0 & B43_RX_PHYST0_OFDM) - status.rate = b43_plcp_get_bitrate_ofdm(plcp); + rate_idx = b43_plcp_get_bitrate_idx_ofdm(plcp, + phytype == B43_PHYTYPE_A); else - status.rate = b43_plcp_get_bitrate_cck(plcp); + rate_idx = b43_plcp_get_bitrate_idx_cck(plcp); + if (unlikely(rate_idx == -1)) { + /* PLCP seems to be corrupted. + * Drop the frame, if we are not interested in corrupted frames. */ + if (!(dev->wl->filter_flags & FIF_PLCPFAIL)) + goto drop; + } + status.rate_idx = rate_idx; status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT); /* - * If monitors are present get full 64-bit timestamp. 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. + * 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 (dev->wl->radiotap_enabled) { + if (ieee80211_is_beacon(fctl) || dev->wl->radiotap_enabled) { u16 low_mactime_now; b43_tsf_read(dev, &status.mactime); @@ -595,47 +796,54 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr) status.mactime += mactime; if (low_mactime_now <= mactime) status.mactime -= 0x10000; - status.flag |= RX_FLAG_TSFT; + status.flag |= RX_FLAG_MACTIME_START; } chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT; switch (chanstat & B43_RX_CHAN_PHYTYPE) { case B43_PHYTYPE_A: - status.phymode = MODE_IEEE80211A; + status.band = IEEE80211_BAND_5GHZ; B43_WARN_ON(1); /* FIXME: We don't really know which value the "chanid" contains. * So the following assignment might be wrong. */ - status.channel = chanid; - status.freq = b43_channel_to_freq_5ghz(status.channel); + status.freq = + ieee80211_channel_to_frequency(chanid, status.band); break; case B43_PHYTYPE_G: - status.phymode = MODE_IEEE80211G; - /* chanid is the radio channel cookie value as used - * to tune the radio. */ - status.freq = chanid + 2400; - status.channel = b43_freq_to_channel_2ghz(status.freq); + status.band = IEEE80211_BAND_2GHZ; + /* Somewhere between 478.104 and 508.1084 firmware for G-PHY + * has been modified to be compatible with N-PHY and others. + */ + if (dev->fw.rev >= 508) + status.freq = ieee80211_channel_to_frequency(chanid, status.band); + else + status.freq = chanid + 2400; break; case B43_PHYTYPE_N: - status.phymode = 0xDEAD /*FIXME MODE_IEEE80211N*/; + case B43_PHYTYPE_LP: + case B43_PHYTYPE_HT: /* chanid is the SHM channel cookie. Which is the plain * channel number in b43. */ - status.channel = chanid; if (chanstat & B43_RX_CHAN_5GHZ) - status.freq = b43_freq_to_channel_5ghz(status.freq); + status.band = IEEE80211_BAND_5GHZ; else - status.freq = b43_freq_to_channel_2ghz(status.freq); + status.band = IEEE80211_BAND_2GHZ; + status.freq = + ieee80211_channel_to_frequency(chanid, status.band); break; default: B43_WARN_ON(1); goto drop; } - dev->stats.last_rx = jiffies; - ieee80211_rx_irqsafe(dev->wl->hw, skb, &status); + memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); + ieee80211_rx_ni(dev->wl->hw, skb); +#if B43_DEBUG + dev->rx_count++; +#endif return; drop: - b43dbg(dev->wl, "RX: Packet dropped\n"); dev_kfree_skb_any(skb); } @@ -657,67 +865,82 @@ void b43_handle_txstatus(struct b43_wldev *dev, dev->wl->ieee_stats.dot11RTSSuccessCount++; } - b43_dma_handle_txstatus(dev, status); + if (b43_using_pio_transfers(dev)) + b43_pio_handle_txstatus(dev, status); + else + b43_dma_handle_txstatus(dev, status); + + b43_phy_txpower_check(dev, 0); } -/* Handle TX status report as received through DMA/PIO queues */ -void b43_handle_hwtxstatus(struct b43_wldev *dev, - const struct b43_hwtxstatus *hw) +/* Fill out the mac80211 TXstatus report based on the b43-specific + * txstatus report data. This returns a boolean whether the frame was + * successfully transmitted. */ +bool b43_fill_txstatus_report(struct b43_wldev *dev, + struct ieee80211_tx_info *report, + const struct b43_txstatus *status) { - struct b43_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; - status.supp_reason = ((tmp & 0x1C) >> 2); - status.pm_indicated = !!(tmp & 0x80); - status.intermediate = !!(tmp & 0x40); - status.for_ampdu = !!(tmp & 0x20); - status.acked = !!(tmp & 0x02); - - b43_handle_txstatus(dev, &status); + bool frame_success = true; + int retry_limit; + + /* preserve the confiured retry limit before clearing the status + * The xmit function has overwritten the rc's value with the actual + * retry limit done by the hardware */ + retry_limit = report->status.rates[0].count; + ieee80211_tx_info_clear_status(report); + + if (status->acked) { + /* The frame was ACKed. */ + report->flags |= IEEE80211_TX_STAT_ACK; + } else { + /* The frame was not ACKed... */ + if (!(report->flags & IEEE80211_TX_CTL_NO_ACK)) { + /* ...but we expected an ACK. */ + frame_success = false; + } + } + if (status->frame_count == 0) { + /* The frame was not transmitted at all. */ + report->status.rates[0].count = 0; + } else if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) { + /* + * If the short retries (RTS, not data frame) have exceeded + * the limit, the hw will not have tried the selected rate, + * but will have used the fallback rate instead. + * Don't let the rate control count attempts for the selected + * rate in this case, otherwise the statistics will be off. + */ + report->status.rates[0].count = 0; + report->status.rates[1].count = status->frame_count; + } else { + if (status->frame_count > retry_limit) { + report->status.rates[0].count = retry_limit; + report->status.rates[1].count = status->frame_count - + retry_limit; + + } else { + report->status.rates[0].count = status->frame_count; + report->status.rates[1].idx = -1; + } + } + + return frame_success; } /* Stop any TX operation on the device (suspend the hardware queues) */ void b43_tx_suspend(struct b43_wldev *dev) { - b43_dma_tx_suspend(dev); + if (b43_using_pio_transfers(dev)) + b43_pio_tx_suspend(dev); + else + b43_dma_tx_suspend(dev); } /* Resume any TX operation on the device (resume the hardware queues) */ void b43_tx_resume(struct b43_wldev *dev) { - b43_dma_tx_resume(dev); -} - -#if 0 -static void upload_qos_parms(struct b43_wldev *dev, - const u16 * parms, u16 offset) -{ - int i; - - for (i = 0; i < B43_NR_QOSPARMS; i++) { - b43_shm_write16(dev, B43_SHM_SHARED, - offset + (i * 2), parms[i]); - } -} -#endif - -/* Initialize the QoS parameters */ -void b43_qos_init(struct b43_wldev *dev) -{ - /* FIXME: This function must probably be called from the mac80211 - * config callback. */ - return; - - b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF); - //FIXME kill magic - b43_write16(dev, 0x688, b43_read16(dev, 0x688) | 0x4); - - /*TODO: We might need some stack support here to get the values. */ + if (b43_using_pio_transfers(dev)) + b43_pio_tx_resume(dev); + else + b43_dma_tx_resume(dev); } |
