if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
goto out;
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
return ret;
}
+static void wl1271_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_blks)
+{
+ bool fw_ps;
+
+ /* only regulate station links */
+ if (hlid < WL1271_AP_STA_HLID_START)
+ return;
+
+ fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
+
+ /*
+ * Wake up from high level PS if the STA is asleep with too little
+ * blocks in FW or if the STA is awake.
+ */
+ if (!fw_ps || tx_blks < WL1271_PS_STA_MAX_BLOCKS)
+ wl1271_ps_link_end(wl, hlid);
+
+ /* Start high-level PS if the STA is asleep with enough blocks in FW */
+ else if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS)
+ wl1271_ps_link_start(wl, hlid, true);
+}
+
+static void wl1271_irq_update_links_status(struct wl1271 *wl,
+ struct wl1271_fw_ap_status *status)
+{
+ u32 cur_fw_ps_map;
+ u8 hlid;
+
+ cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap);
+ if (wl->ap_fw_ps_map != cur_fw_ps_map) {
+ wl1271_debug(DEBUG_PSM,
+ "link ps prev 0x%x cur 0x%x changed 0x%x",
+ wl->ap_fw_ps_map, cur_fw_ps_map,
+ wl->ap_fw_ps_map ^ cur_fw_ps_map);
+
+ wl->ap_fw_ps_map = cur_fw_ps_map;
+ }
+
+ for (hlid = WL1271_AP_STA_HLID_START; hlid < AP_MAX_LINKS; hlid++) {
+ u8 cnt = status->tx_lnk_free_blks[hlid] -
+ wl->links[hlid].prev_freed_blks;
+
+ wl->links[hlid].prev_freed_blks =
+ status->tx_lnk_free_blks[hlid];
+ wl->links[hlid].allocated_blks -= cnt;
+
+ wl1271_irq_ps_regulate_link(wl, hlid,
+ wl->links[hlid].allocated_blks);
+ }
+}
+
static void wl1271_fw_status(struct wl1271 *wl,
struct wl1271_fw_full_status *full_status)
{
if (total)
clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
- if (wl->bss_type == BSS_TYPE_AP_BSS) {
- for (i = 0; i < AP_MAX_LINKS; i++) {
- u8 cnt = status->tx_lnk_free_blks[i] -
- wl->links[i].prev_freed_blks;
-
- wl->links[i].prev_freed_blks =
- status->tx_lnk_free_blks[i];
- wl->links[i].allocated_blks -= cnt;
- }
- }
+ /* for AP update num of allocated TX blocks per link and ps status */
+ if (wl->bss_type == BSS_TYPE_AP_BSS)
+ wl1271_irq_update_links_status(wl, &full_status->ap);
/* update the host-chipset time offset */
getnstimeofday(&ts);
(s64)le32_to_cpu(status->fw_localtime);
}
-#define WL1271_IRQ_MAX_LOOPS 10
+static void wl1271_flush_deferred_work(struct wl1271 *wl)
+{
+ struct sk_buff *skb;
+
+ /* Pass all received frames to the network stack */
+ while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
+ ieee80211_rx_ni(wl->hw, skb);
+
+ /* Return sent skbs to the network stack */
+ while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
+ ieee80211_tx_status(wl->hw, skb);
+}
+
+static void wl1271_netstack_work(struct work_struct *work)
+{
+ struct wl1271 *wl =
+ container_of(work, struct wl1271, netstack_work);
-static void wl1271_irq_work(struct work_struct *work)
+ do {
+ wl1271_flush_deferred_work(wl);
+ } while (skb_queue_len(&wl->deferred_rx_queue));
+}
+
+#define WL1271_IRQ_MAX_LOOPS 256
+
+irqreturn_t wl1271_irq(int irq, void *cookie)
{
int ret;
u32 intr;
int loopcount = WL1271_IRQ_MAX_LOOPS;
- unsigned long flags;
- struct wl1271 *wl =
- container_of(work, struct wl1271, irq_work);
+ struct wl1271 *wl = (struct wl1271 *)cookie;
+ bool done = false;
+ unsigned int defer_count;
mutex_lock(&wl->mutex);
if (unlikely(wl->state == WL1271_STATE_OFF))
goto out;
- ret = wl1271_ps_elp_wakeup(wl, true);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
- spin_lock_irqsave(&wl->wl_lock, flags);
- while (test_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags) && loopcount) {
- clear_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
- spin_unlock_irqrestore(&wl->wl_lock, flags);
- loopcount--;
+ while (!done && loopcount--) {
+ /*
+ * In order to avoid a race with the hardirq, clear the flag
+ * before acknowledging the chip. Since the mutex is held,
+ * wl1271_ps_elp_wakeup cannot be called concurrently.
+ */
+ clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
+ smp_mb__after_clear_bit();
wl1271_fw_status(wl, wl->fw_status);
intr = le32_to_cpu(wl->fw_status->common.intr);
+ intr &= WL1271_INTR_MASK;
if (!intr) {
- wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
- spin_lock_irqsave(&wl->wl_lock, flags);
+ done = true;
continue;
}
- intr &= WL1271_INTR_MASK;
-
if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
wl1271_error("watchdog interrupt received! "
"starting recovery.");
goto out;
}
- if (intr & WL1271_ACX_INTR_DATA) {
+ if (likely(intr & WL1271_ACX_INTR_DATA)) {
wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
- /* check for tx results */
- if (wl->fw_status->common.tx_results_counter !=
- (wl->tx_results_count & 0xff))
- wl1271_tx_complete(wl);
+ wl1271_rx(wl, &wl->fw_status->common);
/* Check if any tx blocks were freed */
if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
wl1271_tx_work_locked(wl);
}
- wl1271_rx(wl, &wl->fw_status->common);
+ /* check for tx results */
+ if (wl->fw_status->common.tx_results_counter !=
+ (wl->tx_results_count & 0xff))
+ wl1271_tx_complete(wl);
+
+ /* Make sure the deferred queues don't get too long */
+ defer_count = skb_queue_len(&wl->deferred_tx_queue) +
+ skb_queue_len(&wl->deferred_rx_queue);
+ if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
+ wl1271_flush_deferred_work(wl);
}
if (intr & WL1271_ACX_INTR_EVENT_A) {
if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
-
- spin_lock_irqsave(&wl->wl_lock, flags);
}
- if (test_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags))
- ieee80211_queue_work(wl->hw, &wl->irq_work);
- else
- clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
- spin_unlock_irqrestore(&wl->wl_lock, flags);
-
wl1271_ps_elp_sleep(wl);
out:
mutex_unlock(&wl->mutex);
+
+ return IRQ_HANDLED;
}
+EXPORT_SYMBOL_GPL(wl1271_irq);
static int wl1271_fetch_firmware(struct wl1271 *wl)
{
goto out;
irq_disable:
- wl1271_disable_interrupts(wl);
mutex_unlock(&wl->mutex);
/* Unlocking the mutex in the middle of handling is
inherently unsafe. In this case we deem it safe to do,
work function will not do anything.) Also, any other
possible concurrent operations will fail due to the
current state, hence the wl1271 struct should be safe. */
- cancel_work_sync(&wl->irq_work);
+ wl1271_disable_interrupts(wl);
+ wl1271_flush_deferred_work(wl);
+ cancel_work_sync(&wl->netstack_work);
mutex_lock(&wl->mutex);
power_off:
wl1271_power_off(wl);
goto out;
}
- wl1271_disable_interrupts(wl);
wl1271_power_off(wl);
wl->state = WL1271_STATE_OFF;
wl->rx_counter = 0;
mutex_unlock(&wl->mutex);
- cancel_work_sync(&wl->irq_work);
+ wl1271_disable_interrupts(wl);
+ wl1271_flush_deferred_work(wl);
+ cancel_work_sync(&wl->netstack_work);
cancel_work_sync(&wl->recovery_work);
mutex_lock(&wl->mutex);
out:
return ret;
}
-static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct wl1271 *wl = hw->priv;
unsigned long flags;
if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
ieee80211_queue_work(wl->hw, &wl->tx_work);
-
- return NETDEV_TX_OK;
}
static struct notifier_block wl1271_dev_notifier = {
break;
irq_disable:
- wl1271_disable_interrupts(wl);
mutex_unlock(&wl->mutex);
/* Unlocking the mutex in the middle of handling is
inherently unsafe. In this case we deem it safe to do,
work function will not do anything.) Also, any other
possible concurrent operations will fail due to the
current state, hence the wl1271 struct should be safe. */
- cancel_work_sync(&wl->irq_work);
+ wl1271_disable_interrupts(wl);
+ wl1271_flush_deferred_work(wl);
+ cancel_work_sync(&wl->netstack_work);
mutex_lock(&wl->mutex);
power_off:
wl1271_power_off(wl);
wl->state = WL1271_STATE_OFF;
- wl1271_disable_interrupts(wl);
-
mutex_unlock(&wl->mutex);
+ wl1271_disable_interrupts(wl);
+ wl1271_flush_deferred_work(wl);
cancel_delayed_work_sync(&wl->scan_complete_work);
- cancel_work_sync(&wl->irq_work);
+ cancel_work_sync(&wl->netstack_work);
cancel_work_sync(&wl->tx_work);
cancel_delayed_work_sync(&wl->pspoll_work);
cancel_delayed_work_sync(&wl->elp_work);
wl->filters = 0;
wl1271_free_ap_keys(wl);
memset(wl->ap_hlid_map, 0, sizeof(wl->ap_hlid_map));
+ wl->ap_fw_ps_map = 0;
+ wl->ap_ps_map = 0;
for (i = 0; i < NUM_TX_QUEUES; i++)
wl->tx_blocks_freed[i] = 0;
is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
if (unlikely(wl->state == WL1271_STATE_OFF))
goto out;
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
goto out_unlock;
}
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out_unlock;
goto out;
}
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
goto out;
}
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
goto out;
}
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
if (unlikely(wl->state == WL1271_STATE_OFF))
goto out;
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
conf_tid->apsd_conf[0] = 0;
conf_tid->apsd_conf[1] = 0;
} else {
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
if (unlikely(wl->state == WL1271_STATE_OFF))
goto out;
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
}
wl_sta = (struct wl1271_station *)sta->drv_priv;
-
__set_bit(id, wl->ap_hlid_map);
wl_sta->hlid = WL1271_AP_STA_HLID_START + id;
*hlid = wl_sta->hlid;
+ memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
return 0;
}
return;
__clear_bit(id, wl->ap_hlid_map);
+ memset(wl->links[hlid].addr, 0, ETH_ALEN);
wl1271_tx_reset_link_queues(wl, hlid);
+ __clear_bit(hlid, &wl->ap_ps_map);
+ __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
}
static int wl1271_op_sta_add(struct ieee80211_hw *hw,
if (ret < 0)
goto out;
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out_free_sta;
if (WARN_ON(!test_bit(id, wl->ap_hlid_map)))
goto out;
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
goto out;
}
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
if (wl->state == WL1271_STATE_OFF)
goto out;
- ret = wl1271_ps_elp_wakeup(wl, false);
+ ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
for (j = 0; j < AP_MAX_LINKS; j++)
skb_queue_head_init(&wl->links[j].tx_queue[i]);
+ skb_queue_head_init(&wl->deferred_rx_queue);
+ skb_queue_head_init(&wl->deferred_tx_queue);
+
INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
INIT_DELAYED_WORK(&wl->pspoll_work, wl1271_pspoll_work);
- INIT_WORK(&wl->irq_work, wl1271_irq_work);
+ INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
INIT_WORK(&wl->tx_work, wl1271_tx_work);
INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
wl->set_bss_type = MAX_BSS_TYPE;
wl->fw_bss_type = MAX_BSS_TYPE;
wl->last_tx_hlid = 0;
+ wl->ap_ps_map = 0;
+ wl->ap_fw_ps_map = 0;
+ wl->quirks = 0;
memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
projects / deliverable / linux.git / blobdiff