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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.c206
1 files changed, 106 insertions, 100 deletions
diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index 7caa26eb4105..19aefbfb2c93 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -30,48 +30,51 @@
#include "xmit.h"
#include "phy.h"
#include "dma.h"
+#include "pio.h"
-/* Extract the bitrate out of a CCK PLCP header. */
-static u8 b43_plcp_get_bitrate_cck(struct b43_plcp_hdr6 *plcp)
+/* 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 u8 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)
@@ -191,6 +194,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
(const struct ieee80211_hdr *)fragment_data;
int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT));
u16 fctl = le16_to_cpu(wlhdr->frame_control);
+ struct ieee80211_rate *fbrate;
u8 rate, rate_fb;
int rate_ofdm, rate_fb_ofdm;
unsigned int plcp_fragment_len;
@@ -200,9 +204,11 @@ int b43_generate_txhdr(struct b43_wldev *dev,
memset(txhdr, 0, sizeof(*txhdr));
- rate = txctl->tx_rate;
+ WARN_ON(!txctl->tx_rate);
+ rate = txctl->tx_rate ? txctl->tx_rate->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 = txctl->alt_retry_rate ? : txctl->tx_rate;
+ rate_fb = fbrate->hw_value;
rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
if (rate_ofdm)
@@ -221,11 +227,10 @@ 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);
+ fbrate);
}
plcp_fragment_len = fragment_len + FCS_LEN;
@@ -287,7 +292,7 @@ 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 (txctl->flags & IEEE80211_TXCTL_SHORT_PREAMBLE)
phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
switch (b43_ieee80211_antenna_sanitize(dev, txctl->antenna_sel_tx)) {
@@ -332,7 +337,8 @@ int b43_generate_txhdr(struct b43_wldev *dev,
int rts_rate_ofdm, rts_rate_fb_ofdm;
struct b43_plcp_hdr6 *plcp;
- rts_rate = txctl->rts_cts_rate;
+ WARN_ON(!txctl->rts_cts_rate);
+ rts_rate = txctl->rts_cts_rate ? txctl->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);
@@ -506,7 +512,7 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
u16 phystat0, phystat3, chanstat, mactime;
u32 macstat;
u16 chanid;
- u8 jssi;
+ u16 phytype;
int padding;
memset(&status, 0, sizeof(status));
@@ -514,10 +520,10 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
/* 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);
+ phytype = chanstat & B43_RX_CHAN_PHYTYPE;
if (macstat & B43_RX_MAC_FCSERR)
dev->wl->ieee_stats.dot11FCSErrorCount++;
@@ -567,26 +573,40 @@ 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));
+ /* Link quality statistics */
status.noise = dev->stats.link_noise;
- /* the next line looks wrong, but is what mac80211 wants */
- status.signal = (jssi * 100) / B43_RX_MAX_SSI;
+ if ((chanstat & B43_RX_CHAN_PHYTYPE) == B43_PHYTYPE_N) {
+// s8 rssi = max(rxhdr->power0, rxhdr->power1);
+ //TODO: Find out what the rssi value is (dBm or percentage?)
+ // and also find out what the maximum possible value is.
+ // Fill status.ssi and status.signal fields.
+ } else {
+ status.ssi = b43_rssi_postprocess(dev, rxhdr->jssi,
+ (phystat0 & B43_RX_PHYST0_OFDM),
+ (phystat0 & B43_RX_PHYST0_GAINCTL),
+ (phystat3 & B43_RX_PHYST3_TRSTATE));
+ /* the next line looks wrong, but is what mac80211 wants */
+ status.signal = (rxhdr->jssi * 100) / B43_RX_MAX_SSI;
+ }
+
if (phystat0 & B43_RX_PHYST0_OFDM)
- status.rate = b43_plcp_get_bitrate_ofdm(plcp);
+ status.rate_idx = b43_plcp_get_bitrate_idx_ofdm(plcp,
+ phytype == B43_PHYTYPE_A);
else
- status.rate = b43_plcp_get_bitrate_cck(plcp);
+ status.rate_idx = b43_plcp_get_bitrate_idx_cck(plcp);
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 (((fctl & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE))
+ == (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON)) ||
+ dev->wl->radiotap_enabled) {
u16 low_mactime_now;
b43_tsf_read(dev, &status.mactime);
@@ -601,29 +621,28 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
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 = b43_channel_to_freq_5ghz(chanid);
break;
case B43_PHYTYPE_G:
- status.phymode = MODE_IEEE80211G;
+ status.band = IEEE80211_BAND_2GHZ;
/* 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);
break;
case B43_PHYTYPE_N:
- status.phymode = 0xDEAD /*FIXME MODE_IEEE80211N*/;
/* 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);
- else
- status.freq = b43_freq_to_channel_2ghz(status.freq);
+ if (chanstat & B43_RX_CHAN_5GHZ) {
+ status.band = IEEE80211_BAND_5GHZ;
+ status.freq = b43_freq_to_channel_5ghz(chanid);
+ } else {
+ status.band = IEEE80211_BAND_2GHZ;
+ status.freq = b43_freq_to_channel_2ghz(chanid);
+ }
break;
default:
B43_WARN_ON(1);
@@ -657,67 +676,54 @@ 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);
}
-/* 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 ieee80211_tx_status *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 = 1;
+
+ if (status->acked) {
+ /* The frame was ACKed. */
+ report->flags |= IEEE80211_TX_STATUS_ACK;
+ } else {
+ /* The frame was not ACKed... */
+ if (!(report->control.flags & IEEE80211_TXCTL_NO_ACK)) {
+ /* ...but we expected an ACK. */
+ frame_success = 0;
+ report->excessive_retries = 1;
+ }
+ }
+ if (status->frame_count == 0) {
+ /* The frame was not transmitted at all. */
+ report->retry_count = 0;
+ } else
+ report->retry_count = status->frame_count - 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);
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-11 08:40:20 +0000