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path: root/drivers/net/wireless/b43/xmit.c
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Diffstat (limited to 'drivers/net/wireless/b43/xmit.c')
-rw-r--r--drivers/net/wireless/b43/xmit.c591
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);
}