1 files changed, 98 insertions, 37 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.c b/drivers/net/wireless/wl12xx/wl1271_tx.c
index ff221258b941..811e739d05bf 100644
--- a/drivers/net/wireless/wl12xx/wl1271_tx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_tx.c
@@ -26,6 +26,7 @@
 
 #include "wl1271.h"
 #include "wl1271_spi.h"
+#include "wl1271_io.h"
 #include "wl1271_reg.h"
 #include "wl1271_ps.h"
 #include "wl1271_tx.h"
@@ -33,8 +34,7 @@
 static int wl1271_tx_id(struct wl1271 *wl, struct sk_buff *skb)
 {
         int i;
-
-        for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
+        for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
                 if (wl->tx_frames[i] == NULL) {
                         wl->tx_frames[i] = skb;
                         return i;
@@ -58,8 +58,8 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra)
         /* approximate the number of blocks required for this packet
            in the firmware */
         /* FIXME: try to figure out what is done here and make it cleaner */
-        total_blocks = (skb->len) >> TX_HW_BLOCK_SHIFT_DIV;
-        excluded = (total_blocks << 2) + (skb->len & 0xff) + 34;
+        total_blocks = (total_len + 20) >> TX_HW_BLOCK_SHIFT_DIV;
+        excluded = (total_blocks << 2) + ((total_len + 20) & 0xff) + 34;
         total_blocks += (excluded > 252) ? 2 : 1;
         total_blocks += TX_HW_BLOCK_SPARE;
 
@@ -88,29 +88,48 @@ static int wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
                               u32 extra, struct ieee80211_tx_info *control)
 {
         struct wl1271_tx_hw_descr *desc;
-        int pad;
+        int pad, ac;
+        u16 tx_attr;
 
         desc = (struct wl1271_tx_hw_descr *) skb->data;
 
+        /* relocate space for security header */
+        if (extra) {
+                void *framestart = skb->data + sizeof(*desc);
+                u16 fc = *(u16 *)(framestart + extra);
+                int hdrlen = ieee80211_hdrlen(cpu_to_le16(fc));
+                memmove(framestart, framestart + extra, hdrlen);
+        }
+
         /* configure packet life time */
-        desc->start_time = jiffies_to_usecs(jiffies) - wl->time_offset;
-        desc->life_time = TX_HW_MGMT_PKT_LIFETIME_TU;
+        desc->start_time = cpu_to_le32(jiffies_to_usecs(jiffies) -
+                                       wl->time_offset);
+        desc->life_time = cpu_to_le16(TX_HW_MGMT_PKT_LIFETIME_TU);
 
         /* configure the tx attributes */
-        desc->tx_attr = wl->session_counter << TX_HW_ATTR_OFST_SESSION_COUNTER;
-        /* FIXME: do we know the packet priority? can we identify mgmt
-           packets, and use max prio for them at least? */
-        desc->tid = 0;
+        tx_attr = wl->session_counter << TX_HW_ATTR_OFST_SESSION_COUNTER;
+
+        /* queue */
+        ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
+        desc->tid = wl1271_tx_ac_to_tid(ac);
+
         desc->aid = TX_HW_DEFAULT_AID;
         desc->reserved = 0;
 
         /* align the length (and store in terms of words) */
         pad = WL1271_TX_ALIGN(skb->len);
-        desc->length = pad >> 2;
+        desc->length = cpu_to_le16(pad >> 2);
 
         /* calculate number of padding bytes */
         pad = pad - skb->len;
-        desc->tx_attr |= pad << TX_HW_ATTR_OFST_LAST_WORD_PAD;
+        tx_attr |= pad << TX_HW_ATTR_OFST_LAST_WORD_PAD;
+
+        /* if the packets are destined for AP (have a STA entry) send them
+           with AP rate policies, otherwise use default basic rates */
+        if (control->control.sta)
+                tx_attr |= ACX_TX_AP_FULL_RATE << TX_HW_ATTR_OFST_RATE_POLICY;
+
+        desc->tx_attr = cpu_to_le16(tx_attr);
 
         wl1271_debug(DEBUG_TX, "tx_fill_hdr: pad: %d", pad);
         return 0;
@@ -147,11 +166,11 @@ static int wl1271_tx_send_packet(struct wl1271 *wl, struct sk_buff *skb,
         len = WL1271_TX_ALIGN(skb->len);
 
         /* perform a fixed address block write with the packet */
-        wl1271_spi_reg_write(wl, WL1271_SLV_MEM_DATA, skb->data, len, true);
+        wl1271_write(wl, WL1271_SLV_MEM_DATA, skb->data, len, true);
 
         /* write packet new counter into the write access register */
         wl->tx_packets_count++;
-        wl1271_reg_write32(wl, WL1271_HOST_WR_ACCESS, wl->tx_packets_count);
+        wl1271_write32(wl, WL1271_HOST_WR_ACCESS, wl->tx_packets_count);
 
         desc = (struct wl1271_tx_hw_descr *) skb->data;
         wl1271_debug(DEBUG_TX, "tx id %u skb 0x%p payload %u (%u words)",
@@ -185,6 +204,7 @@ static int wl1271_tx_frame(struct wl1271 *wl, struct sk_buff *skb)
                         ret = wl1271_cmd_set_default_wep_key(wl, idx);
                         if (ret < 0)
                                 return ret;
+                        wl->default_key = idx;
                 }
         }
 
@@ -203,18 +223,50 @@ static int wl1271_tx_frame(struct wl1271 *wl, struct sk_buff *skb)
         return ret;
 }
 
+static u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set)
+{
+        struct ieee80211_supported_band *band;
+        u32 enabled_rates = 0;
+        int bit;
+
+        band = wl->hw->wiphy->bands[wl->band];
+        for (bit = 0; bit < band->n_bitrates; bit++) {
+                if (rate_set & 0x1)
+                        enabled_rates |= band->bitrates[bit].hw_value;
+                rate_set >>= 1;
+        }
+
+        return enabled_rates;
+}
+
 void wl1271_tx_work(struct work_struct *work)
 {
         struct wl1271 *wl = container_of(work, struct wl1271, tx_work);
         struct sk_buff *skb;
         bool woken_up = false;
+        u32 sta_rates = 0;
         int ret;
 
+        /* check if the rates supported by the AP have changed */
+        if (unlikely(test_and_clear_bit(WL1271_FLAG_STA_RATES_CHANGED,
+                                        &wl->flags))) {
+                unsigned long flags;
+                spin_lock_irqsave(&wl->wl_lock, flags);
+                sta_rates = wl->sta_rate_set;
+                spin_unlock_irqrestore(&wl->wl_lock, flags);
+        }
+
         mutex_lock(&wl->mutex);
 
         if (unlikely(wl->state == WL1271_STATE_OFF))
                 goto out;
 
+        /* if rates have changed, re-configure the rate policy */
+        if (unlikely(sta_rates)) {
+                wl->rate_set = wl1271_tx_enabled_rates_get(wl, sta_rates);
+                wl1271_acx_rate_policies(wl);
+        }
+
         while ((skb = skb_dequeue(&wl->tx_queue))) {
                 if (!woken_up) {
                         ret = wl1271_ps_elp_wakeup(wl, false);
@@ -229,18 +281,18 @@ void wl1271_tx_work(struct work_struct *work)
                         wl1271_debug(DEBUG_TX, "tx_work: fw buffer full, "
                                      "stop queues");
                         ieee80211_stop_queues(wl->hw);
-                        wl->tx_queue_stopped = true;
+                        set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
                         skb_queue_head(&wl->tx_queue, skb);
                         goto out;
                 } else if (ret < 0) {
                         dev_kfree_skb(skb);
                         goto out;
-                } else if (wl->tx_queue_stopped) {
+                } else if (test_and_clear_bit(WL1271_FLAG_TX_QUEUE_STOPPED,
+                                              &wl->flags)) {
                         /* firmware buffer has space, restart queues */
                         wl1271_debug(DEBUG_TX,
                                      "complete_packet: waking queues");
                         ieee80211_wake_queues(wl->hw);
-                        wl->tx_queue_stopped = false;
                 }
         }
 
@@ -254,14 +306,13 @@ out:
 static void wl1271_tx_complete_packet(struct wl1271 *wl,
                                       struct wl1271_tx_hw_res_descr *result)
 {
-
         struct ieee80211_tx_info *info;
         struct sk_buff *skb;
-        u32 header_len;
+        u16 seq;
         int id = result->id;
 
         /* check for id legality */
-        if (id >= TX_HW_RESULT_QUEUE_LEN || wl->tx_frames[id] == NULL) {
+        if (id >= ACX_TX_DESCRIPTORS || wl->tx_frames[id] == NULL) {
                 wl1271_warning("TX result illegal id: %d", id);
                 return;
         }
@@ -284,22 +335,32 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl,
         /* info->status.retry_count = result->ack_failures; */
         wl->stats.retry_count += result->ack_failures;
 
-        /* get header len */
+        /* update security sequence number */
+        seq = wl->tx_security_seq_16 +
+                (result->lsb_security_sequence_number -
+                 wl->tx_security_last_seq);
+        wl->tx_security_last_seq = result->lsb_security_sequence_number;
+
+        if (seq < wl->tx_security_seq_16)
+                wl->tx_security_seq_32++;
+        wl->tx_security_seq_16 = seq;
+
+        /* remove private header from packet */
+        skb_pull(skb, sizeof(struct wl1271_tx_hw_descr));
+
+        /* remove TKIP header space if present */
         if (info->control.hw_key &&
-            info->control.hw_key->alg == ALG_TKIP)
-                header_len = WL1271_TKIP_IV_SPACE +
-                        sizeof(struct wl1271_tx_hw_descr);
-        else
-                header_len = sizeof(struct wl1271_tx_hw_descr);
+            info->control.hw_key->alg == ALG_TKIP) {
+                int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+                memmove(skb->data + WL1271_TKIP_IV_SPACE, skb->data, hdrlen);
+                skb_pull(skb, WL1271_TKIP_IV_SPACE);
+        }
 
         wl1271_debug(DEBUG_TX, "tx status id %u skb 0x%p failures %u rate 0x%x"
                      " status 0x%x",
                      result->id, skb, result->ack_failures,
                      result->rate_class_index, result->status);
 
-        /* remove private header from packet */
-        skb_pull(skb, header_len);
-
         /* return the packet to the stack */
         ieee80211_tx_status(wl->hw, skb);
         wl->tx_frames[result->id] = NULL;
@@ -315,8 +376,8 @@ void wl1271_tx_complete(struct wl1271 *wl, u32 count)
         wl1271_debug(DEBUG_TX, "tx_complete received, packets: %d", count);
 
         /* read the tx results from the chipset */
-        wl1271_spi_mem_read(wl, memmap->tx_result,
-                            wl->tx_res_if, sizeof(*wl->tx_res_if));
+        wl1271_read(wl, le32_to_cpu(memmap->tx_result),
+                    wl->tx_res_if, sizeof(*wl->tx_res_if), false);
 
         /* verify that the result buffer is not getting overrun */
         if (count > TX_HW_RESULT_QUEUE_LEN) {
@@ -337,10 +398,10 @@ void wl1271_tx_complete(struct wl1271 *wl, u32 count)
         }
 
         /* write host counter to chipset (to ack) */
-        wl1271_mem_write32(wl, memmap->tx_result +
-                           offsetof(struct wl1271_tx_hw_res_if,
-                                    tx_result_host_counter),
-                           wl->tx_res_if->tx_result_fw_counter);
+        wl1271_write32(wl, le32_to_cpu(memmap->tx_result) +
+                       offsetof(struct wl1271_tx_hw_res_if,
+                       tx_result_host_counter),
+                       le32_to_cpu(wl->tx_res_if->tx_result_fw_counter));
 }
 
 /* caller must hold wl->mutex */
@@ -364,7 +425,7 @@ void wl1271_tx_flush(struct wl1271 *wl)
                 ieee80211_tx_status(wl->hw, skb);
         }
 
-        for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
+        for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
                 if (wl->tx_frames[i] != NULL) {
                         skb = wl->tx_frames[i];
                         info = IEEE80211_SKB_CB(skb);