static void iwl_rx_reply_alive(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_alive_resp *palive;
struct delayed_work *pwork;
struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl4965_beacon_notif *beacon =
(struct iwl4965_beacon_notif *)pkt->u.raw;
u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
static void iwl_rx_card_state_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
unsigned long status = priv->status;
IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
/* calculate total frames need to be restock after handling RX */
- total_empty = r - priv->rxq.write_actual;
+ total_empty = r - rxq->write_actual;
if (total_empty < 0)
total_empty += RX_QUEUE_SIZE;
rxq->queue[i] = NULL;
- pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
- priv->hw_params.rx_buf_size + 256,
- PCI_DMA_FROMDEVICE);
- pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ pci_unmap_page(priv->pci_dev, rxb->page_dma,
+ PAGE_SIZE << priv->hw_params.rx_page_order,
+ PCI_DMA_FROMDEVICE);
+ pkt = rxb_addr(rxb);
trace_iwlwifi_dev_rx(priv, pkt,
le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
if (priv->rx_handlers[pkt->hdr.cmd]) {
IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
- priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
+ priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
} else {
/* No handling needed */
IWL_DEBUG_RX(priv,
pkt->hdr.cmd);
}
+ /*
+ * XXX: After here, we should always check rxb->page
+ * against NULL before touching it or its virtual
+ * memory (pkt). Because some rx_handler might have
+ * already taken or freed the pages.
+ */
+
if (reclaim) {
- /* Invoke any callbacks, transfer the skb to caller, and
- * fire off the (possibly) blocking iwl_send_cmd()
+ /* Invoke any callbacks, transfer the buffer to caller,
+ * and fire off the (possibly) blocking iwl_send_cmd()
* as we reclaim the driver command queue */
- if (rxb && rxb->skb)
+ if (rxb->page)
iwl_tx_cmd_complete(priv, rxb);
else
IWL_WARN(priv, "Claim null rxb?\n");
}
- /* For now we just don't re-use anything. We can tweak this
- * later to try and re-use notification packets and SKBs that
- * fail to Rx correctly */
- if (rxb->skb != NULL) {
- priv->alloc_rxb_skb--;
- dev_kfree_skb_any(rxb->skb);
- rxb->skb = NULL;
- }
-
+ /* Reuse the page if possible. For notification packets and
+ * SKBs that fail to Rx correctly, add them back into the
+ * rx_free list for reuse later. */
spin_lock_irqsave(&rxq->lock, flags);
- list_add_tail(&rxb->list, &priv->rxq.rx_used);
+ if (rxb->page != NULL) {
+ rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
+ 0, PAGE_SIZE << priv->hw_params.rx_page_order,
+ PCI_DMA_FROMDEVICE);
+ list_add_tail(&rxb->list, &rxq->rx_free);
+ rxq->free_count++;
+ } else
+ list_add_tail(&rxb->list, &rxq->rx_used);
+
spin_unlock_irqrestore(&rxq->lock, flags);
+
i = (i + 1) & RX_QUEUE_MASK;
/* If there are a lot of unused frames,
* restock the Rx queue so ucode wont assert. */
if (fill_rx) {
count++;
if (count >= 8) {
- priv->rxq.read = i;
+ rxq->read = i;
iwl_rx_replenish_now(priv);
count = 0;
}
}
/* Backtrack one entry */
- priv->rxq.read = i;
+ rxq->read = i;
if (fill_rx)
iwl_rx_replenish_now(priv);
else
}
#endif
+ spin_unlock_irqrestore(&priv->lock, flags);
+
/* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
* atomic, make sure that inta covers all the interrupts that
* we've discovered, even if FH interrupt came in just after
handled |= CSR_INT_BIT_HW_ERR;
- spin_unlock_irqrestore(&priv->lock, flags);
-
return;
}
if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
iwl_rx_handle(priv);
priv->isr_stats.rx++;
+ iwl_leds_background(priv);
handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
}
+ /* This "Tx" DMA channel is used only for loading uCode */
if (inta & CSR_INT_BIT_FH_TX) {
- IWL_DEBUG_ISR(priv, "Tx interrupt\n");
+ IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
priv->isr_stats.tx++;
handled |= CSR_INT_BIT_FH_TX;
- /* FH finished to write, send event */
+ /* Wake up uCode load routine, now that load is complete */
priv->ucode_write_complete = 1;
wake_up_interruptible(&priv->wait_command_queue);
}
"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
}
#endif
- spin_unlock_irqrestore(&priv->lock, flags);
}
/* tasklet for iwlagn interrupt */
inta, inta_mask);
}
#endif
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
/* saved interrupt in inta variable now we can reset priv->inta */
priv->inta = 0;
handled |= CSR_INT_BIT_HW_ERR;
- spin_unlock_irqrestore(&priv->lock, flags);
-
return;
}
CSR_INT_PERIODIC_ENA);
priv->isr_stats.rx++;
+ iwl_leds_background(priv);
}
+ /* This "Tx" DMA channel is used only for loading uCode */
if (inta & CSR_INT_BIT_FH_TX) {
iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
- IWL_DEBUG_ISR(priv, "Tx interrupt\n");
+ IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
priv->isr_stats.tx++;
handled |= CSR_INT_BIT_FH_TX;
- /* FH finished to write, send event */
+ /* Wake up uCode load routine, now that load is complete */
priv->ucode_write_complete = 1;
wake_up_interruptible(&priv->wait_command_queue);
}
inta & ~priv->inta_mask);
}
-
/* Re-enable all interrupts */
/* only Re-enable if diabled by irq */
if (test_bit(STATUS_INT_ENABLED, &priv->status))
iwl_enable_interrupts(priv);
-
- spin_unlock_irqrestore(&priv->lock, flags);
-
}
IWL_UCODE_API(priv->ucode_ver),
IWL_UCODE_SERIAL(priv->ucode_ver));
+ snprintf(priv->hw->wiphy->fw_version,
+ sizeof(priv->hw->wiphy->fw_version),
+ "%u.%u.%u.%u",
+ IWL_UCODE_MAJOR(priv->ucode_ver),
+ IWL_UCODE_MINOR(priv->ucode_ver),
+ IWL_UCODE_API(priv->ucode_ver),
+ IWL_UCODE_SERIAL(priv->ucode_ver));
+
if (build)
IWL_DEBUG_INFO(priv, "Build %u\n", build);
udelay(5);
- /* FIXME: apm_ops.suspend(priv) */
- if (exit_pending)
- priv->cfg->ops->lib->apm_ops.stop(priv);
- else
- priv->cfg->ops->lib->apm_ops.reset(priv);
+ /* Stop the device, and put it in low power state */
+ priv->cfg->ops->lib->apm_ops.stop(priv);
+
exit:
memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
#define UCODE_READY_TIMEOUT (4 * HZ)
+/*
+ * Not a mac80211 entry point function, but it fits in with all the
+ * other mac80211 functions grouped here.
+ */
+static int iwl_setup_mac(struct iwl_priv *priv)
+{
+ int ret;
+ struct ieee80211_hw *hw = priv->hw;
+ hw->rate_control_algorithm = "iwl-agn-rs";
+
+ /* Tell mac80211 our characteristics */
+ hw->flags = IEEE80211_HW_SIGNAL_DBM |
+ IEEE80211_HW_NOISE_DBM |
+ IEEE80211_HW_AMPDU_AGGREGATION |
+ IEEE80211_HW_SPECTRUM_MGMT;
+
+ if (!priv->cfg->broken_powersave)
+ hw->flags |= IEEE80211_HW_SUPPORTS_PS |
+ IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
+
+ hw->sta_data_size = sizeof(struct iwl_station_priv);
+ hw->wiphy->interface_modes =
+ BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_ADHOC);
+
+ hw->wiphy->custom_regulatory = true;
+
+ /* Firmware does not support this */
+ hw->wiphy->disable_beacon_hints = true;
+
+ /*
+ * For now, disable PS by default because it affects
+ * RX performance significantly.
+ */
+ hw->wiphy->ps_default = false;
+
+ hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
+ /* we create the 802.11 header and a zero-length SSID element */
+ hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
+
+ /* Default value; 4 EDCA QOS priorities */
+ hw->queues = 4;
+
+ hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
+
+ if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
+ priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
+ &priv->bands[IEEE80211_BAND_2GHZ];
+ if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
+ priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
+ &priv->bands[IEEE80211_BAND_5GHZ];
+
+ ret = ieee80211_register_hw(priv->hw);
+ if (ret) {
+ IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
+ return ret;
+ }
+ priv->mac80211_registered = 1;
+
+ return 0;
+}
+
+
static int iwl_mac_start(struct ieee80211_hw *hw)
{
struct iwl_priv *priv = hw->priv;
goto out_iounmap;
}
- /* amp init */
- err = priv->cfg->ops->lib->apm_ops.init(priv);
- if (err < 0) {
- IWL_ERR(priv, "Failed to init APMG\n");
- goto out_iounmap;
- }
/*****************
* 4. Read EEPROM
*****************/
out_pci_disable_device:
pci_disable_device(pdev);
out_ieee80211_free_hw:
- ieee80211_free_hw(priv->hw);
iwl_free_traffic_mem(priv);
+ ieee80211_free_hw(priv->hw);
out:
return err;
}
iwl_down(priv);
}
+ /*
+ * Make sure device is reset to low power before unloading driver.
+ * This may be redundant with iwl_down(), but there are paths to
+ * run iwl_down() without calling apm_ops.stop(), and there are
+ * paths to avoid running iwl_down() at all before leaving driver.
+ * This (inexpensive) call *makes sure* device is reset.
+ */
+ priv->cfg->ops->lib->apm_ops.stop(priv);
+
iwl_tt_exit(priv);
/* make sure we flush any pending irq or
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff