diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-lib.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 774 |
1 files changed, 213 insertions, 561 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c index f803fb62f8bc..3bee0f119bcd 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c @@ -39,6 +39,7 @@ #include "iwl-agn-hw.h" #include "iwl-agn.h" #include "iwl-sta.h" +#include "iwl-trans.h" static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) { @@ -52,73 +53,73 @@ static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) switch (status) { case TX_STATUS_POSTPONE_DELAY: - priv->_agn.reply_tx_stats.pp_delay++; + priv->reply_tx_stats.pp_delay++; break; case TX_STATUS_POSTPONE_FEW_BYTES: - priv->_agn.reply_tx_stats.pp_few_bytes++; + priv->reply_tx_stats.pp_few_bytes++; break; case TX_STATUS_POSTPONE_BT_PRIO: - priv->_agn.reply_tx_stats.pp_bt_prio++; + priv->reply_tx_stats.pp_bt_prio++; break; case TX_STATUS_POSTPONE_QUIET_PERIOD: - priv->_agn.reply_tx_stats.pp_quiet_period++; + priv->reply_tx_stats.pp_quiet_period++; break; case TX_STATUS_POSTPONE_CALC_TTAK: - priv->_agn.reply_tx_stats.pp_calc_ttak++; + priv->reply_tx_stats.pp_calc_ttak++; break; case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: - priv->_agn.reply_tx_stats.int_crossed_retry++; + priv->reply_tx_stats.int_crossed_retry++; break; case TX_STATUS_FAIL_SHORT_LIMIT: - priv->_agn.reply_tx_stats.short_limit++; + priv->reply_tx_stats.short_limit++; break; case TX_STATUS_FAIL_LONG_LIMIT: - priv->_agn.reply_tx_stats.long_limit++; + priv->reply_tx_stats.long_limit++; break; case TX_STATUS_FAIL_FIFO_UNDERRUN: - priv->_agn.reply_tx_stats.fifo_underrun++; + priv->reply_tx_stats.fifo_underrun++; break; case TX_STATUS_FAIL_DRAIN_FLOW: - priv->_agn.reply_tx_stats.drain_flow++; + priv->reply_tx_stats.drain_flow++; break; case TX_STATUS_FAIL_RFKILL_FLUSH: - priv->_agn.reply_tx_stats.rfkill_flush++; + priv->reply_tx_stats.rfkill_flush++; break; case TX_STATUS_FAIL_LIFE_EXPIRE: - priv->_agn.reply_tx_stats.life_expire++; + priv->reply_tx_stats.life_expire++; break; case TX_STATUS_FAIL_DEST_PS: - priv->_agn.reply_tx_stats.dest_ps++; + priv->reply_tx_stats.dest_ps++; break; case TX_STATUS_FAIL_HOST_ABORTED: - priv->_agn.reply_tx_stats.host_abort++; + priv->reply_tx_stats.host_abort++; break; case TX_STATUS_FAIL_BT_RETRY: - priv->_agn.reply_tx_stats.bt_retry++; + priv->reply_tx_stats.bt_retry++; break; case TX_STATUS_FAIL_STA_INVALID: - priv->_agn.reply_tx_stats.sta_invalid++; + priv->reply_tx_stats.sta_invalid++; break; case TX_STATUS_FAIL_FRAG_DROPPED: - priv->_agn.reply_tx_stats.frag_drop++; + priv->reply_tx_stats.frag_drop++; break; case TX_STATUS_FAIL_TID_DISABLE: - priv->_agn.reply_tx_stats.tid_disable++; + priv->reply_tx_stats.tid_disable++; break; case TX_STATUS_FAIL_FIFO_FLUSHED: - priv->_agn.reply_tx_stats.fifo_flush++; + priv->reply_tx_stats.fifo_flush++; break; case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: - priv->_agn.reply_tx_stats.insuff_cf_poll++; + priv->reply_tx_stats.insuff_cf_poll++; break; case TX_STATUS_FAIL_PASSIVE_NO_RX: - priv->_agn.reply_tx_stats.fail_hw_drop++; + priv->reply_tx_stats.fail_hw_drop++; break; case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: - priv->_agn.reply_tx_stats.sta_color_mismatch++; + priv->reply_tx_stats.sta_color_mismatch++; break; default: - priv->_agn.reply_tx_stats.unknown++; + priv->reply_tx_stats.unknown++; break; } } @@ -129,43 +130,43 @@ static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) switch (status) { case AGG_TX_STATE_UNDERRUN_MSK: - priv->_agn.reply_agg_tx_stats.underrun++; + priv->reply_agg_tx_stats.underrun++; break; case AGG_TX_STATE_BT_PRIO_MSK: - priv->_agn.reply_agg_tx_stats.bt_prio++; + priv->reply_agg_tx_stats.bt_prio++; break; case AGG_TX_STATE_FEW_BYTES_MSK: - priv->_agn.reply_agg_tx_stats.few_bytes++; + priv->reply_agg_tx_stats.few_bytes++; break; case AGG_TX_STATE_ABORT_MSK: - priv->_agn.reply_agg_tx_stats.abort++; + priv->reply_agg_tx_stats.abort++; break; case AGG_TX_STATE_LAST_SENT_TTL_MSK: - priv->_agn.reply_agg_tx_stats.last_sent_ttl++; + priv->reply_agg_tx_stats.last_sent_ttl++; break; case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: - priv->_agn.reply_agg_tx_stats.last_sent_try++; + priv->reply_agg_tx_stats.last_sent_try++; break; case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: - priv->_agn.reply_agg_tx_stats.last_sent_bt_kill++; + priv->reply_agg_tx_stats.last_sent_bt_kill++; break; case AGG_TX_STATE_SCD_QUERY_MSK: - priv->_agn.reply_agg_tx_stats.scd_query++; + priv->reply_agg_tx_stats.scd_query++; break; case AGG_TX_STATE_TEST_BAD_CRC32_MSK: - priv->_agn.reply_agg_tx_stats.bad_crc32++; + priv->reply_agg_tx_stats.bad_crc32++; break; case AGG_TX_STATE_RESPONSE_MSK: - priv->_agn.reply_agg_tx_stats.response++; + priv->reply_agg_tx_stats.response++; break; case AGG_TX_STATE_DUMP_TX_MSK: - priv->_agn.reply_agg_tx_stats.dump_tx++; + priv->reply_agg_tx_stats.dump_tx++; break; case AGG_TX_STATE_DELAY_TX_MSK: - priv->_agn.reply_agg_tx_stats.delay_tx++; + priv->reply_agg_tx_stats.delay_tx++; break; default: - priv->_agn.reply_agg_tx_stats.unknown++; + priv->reply_agg_tx_stats.unknown++; break; } } @@ -390,8 +391,7 @@ void iwl_check_abort_status(struct iwl_priv *priv, } } -static void iwlagn_rx_reply_tx(struct iwl_priv *priv, - struct iwl_rx_mem_buffer *rxb) +void iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); u16 sequence = le16_to_cpu(pkt->hdr.sequence); @@ -400,6 +400,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_tx_queue *txq = &priv->txq[txq_id]; struct ieee80211_tx_info *info; struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; + struct ieee80211_hdr *hdr; struct iwl_tx_info *txb; u32 status = le16_to_cpu(tx_resp->status.status); int tid; @@ -408,9 +409,9 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv, unsigned long flags; if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) { - IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d " - "is out of range [0-%d] %d %d\n", txq_id, - index, txq->q.n_bd, txq->q.write_ptr, + IWL_ERR(priv, "%s: Read index for DMA queue txq_id (%d) " + "index %d is out of range [0-%d] %d %d\n", __func__, + txq_id, index, txq->q.n_bd, txq->q.write_ptr, txq->q.read_ptr); return; } @@ -426,6 +427,11 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv, IWLAGN_TX_RES_RA_POS; spin_lock_irqsave(&priv->sta_lock, flags); + + hdr = (void *)txb->skb->data; + if (!ieee80211_is_data_qos(hdr->frame_control)) + priv->last_seq_ctl = tx_resp->seq_ctl; + if (txq->sched_retry) { const u32 scd_ssn = iwlagn_get_scd_ssn(tx_resp); struct iwl_ht_agg *agg; @@ -438,7 +444,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv, if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist) { - IWL_WARN(priv, "receive reply tx with bt_kill\n"); + IWL_DEBUG_COEX(priv, "receive reply tx with bt_kill\n"); } iwlagn_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index); @@ -478,27 +484,6 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv, spin_unlock_irqrestore(&priv->sta_lock, flags); } -void iwlagn_rx_handler_setup(struct iwl_priv *priv) -{ - /* init calibration handlers */ - priv->rx_handlers[CALIBRATION_RES_NOTIFICATION] = - iwlagn_rx_calib_result; - priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx; - - /* set up notification wait support */ - spin_lock_init(&priv->_agn.notif_wait_lock); - INIT_LIST_HEAD(&priv->_agn.notif_waits); - init_waitqueue_head(&priv->_agn.notif_waitq); -} - -void iwlagn_setup_deferred_work(struct iwl_priv *priv) -{ - /* - * nothing need to be done here anymore - * still keep for future use if needed - */ -} - int iwlagn_hw_valid_rtc_data_addr(u32 addr) { return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) && @@ -540,8 +525,8 @@ int iwlagn_send_tx_power(struct iwl_priv *priv) else tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD; - return iwl_send_cmd_pdu(priv, tx_ant_cfg_cmd, sizeof(tx_power_cmd), - &tx_power_cmd); + return trans_send_cmd_pdu(&priv->trans, tx_ant_cfg_cmd, CMD_SYNC, + sizeof(tx_power_cmd), &tx_power_cmd); } void iwlagn_temperature(struct iwl_priv *priv) @@ -610,8 +595,7 @@ static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address) return (address & ADDRESS_MSK) + (offset << 1); } -const u8 *iwlagn_eeprom_query_addr(const struct iwl_priv *priv, - size_t offset) +const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) { u32 address = eeprom_indirect_address(priv, offset); BUG_ON(address >= priv->cfg->base_params->eeprom_size); @@ -622,367 +606,12 @@ struct iwl_mod_params iwlagn_mod_params = { .amsdu_size_8K = 1, .restart_fw = 1, .plcp_check = true, + .bt_coex_active = true, + .no_sleep_autoadjust = true, + .power_level = IWL_POWER_INDEX_1, /* the rest are 0 by default */ }; -void iwlagn_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq) -{ - unsigned long flags; - int i; - spin_lock_irqsave(&rxq->lock, flags); - INIT_LIST_HEAD(&rxq->rx_free); - INIT_LIST_HEAD(&rxq->rx_used); - /* Fill the rx_used queue with _all_ of the Rx buffers */ - for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { - /* In the reset function, these buffers may have been allocated - * to an SKB, so we need to unmap and free potential storage */ - if (rxq->pool[i].page != NULL) { - pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma, - PAGE_SIZE << priv->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - __iwl_free_pages(priv, rxq->pool[i].page); - rxq->pool[i].page = NULL; - } - list_add_tail(&rxq->pool[i].list, &rxq->rx_used); - } - - for (i = 0; i < RX_QUEUE_SIZE; i++) - rxq->queue[i] = NULL; - - /* Set us so that we have processed and used all buffers, but have - * not restocked the Rx queue with fresh buffers */ - rxq->read = rxq->write = 0; - rxq->write_actual = 0; - rxq->free_count = 0; - spin_unlock_irqrestore(&rxq->lock, flags); -} - -int iwlagn_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) -{ - u32 rb_size; - const u32 rfdnlog = RX_QUEUE_SIZE_LOG; /* 256 RBDs */ - u32 rb_timeout = 0; /* FIXME: RX_RB_TIMEOUT for all devices? */ - - rb_timeout = RX_RB_TIMEOUT; - - if (iwlagn_mod_params.amsdu_size_8K) - rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K; - else - rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K; - - /* Stop Rx DMA */ - iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); - - /* Reset driver's Rx queue write index */ - iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); - - /* Tell device where to find RBD circular buffer in DRAM */ - iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG, - (u32)(rxq->bd_dma >> 8)); - - /* Tell device where in DRAM to update its Rx status */ - iwl_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG, - rxq->rb_stts_dma >> 4); - - /* Enable Rx DMA - * FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY is set because of HW bug in - * the credit mechanism in 5000 HW RX FIFO - * Direct rx interrupts to hosts - * Rx buffer size 4 or 8k - * RB timeout 0x10 - * 256 RBDs - */ - iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, - FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL | - FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY | - FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL | - FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK | - rb_size| - (rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)| - (rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS)); - - /* Set interrupt coalescing timer to default (2048 usecs) */ - iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_TIMEOUT_DEF); - - return 0; -} - -static void iwlagn_set_pwr_vmain(struct iwl_priv *priv) -{ -/* - * (for documentation purposes) - * to set power to V_AUX, do: - - if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) - iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, - APMG_PS_CTRL_VAL_PWR_SRC_VAUX, - ~APMG_PS_CTRL_MSK_PWR_SRC); - */ - - iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, - APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, - ~APMG_PS_CTRL_MSK_PWR_SRC); -} - -int iwlagn_hw_nic_init(struct iwl_priv *priv) -{ - unsigned long flags; - struct iwl_rx_queue *rxq = &priv->rxq; - int ret; - - /* nic_init */ - spin_lock_irqsave(&priv->lock, flags); - priv->cfg->ops->lib->apm_ops.init(priv); - - /* Set interrupt coalescing calibration timer to default (512 usecs) */ - iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF); - - spin_unlock_irqrestore(&priv->lock, flags); - - iwlagn_set_pwr_vmain(priv); - - priv->cfg->ops->lib->apm_ops.config(priv); - - /* Allocate the RX queue, or reset if it is already allocated */ - if (!rxq->bd) { - ret = iwl_rx_queue_alloc(priv); - if (ret) { - IWL_ERR(priv, "Unable to initialize Rx queue\n"); - return -ENOMEM; - } - } else - iwlagn_rx_queue_reset(priv, rxq); - - iwlagn_rx_replenish(priv); - - iwlagn_rx_init(priv, rxq); - - spin_lock_irqsave(&priv->lock, flags); - - rxq->need_update = 1; - iwl_rx_queue_update_write_ptr(priv, rxq); - - spin_unlock_irqrestore(&priv->lock, flags); - - /* Allocate or reset and init all Tx and Command queues */ - if (!priv->txq) { - ret = iwlagn_txq_ctx_alloc(priv); - if (ret) - return ret; - } else - iwlagn_txq_ctx_reset(priv); - - if (priv->cfg->base_params->shadow_reg_enable) { - /* enable shadow regs in HW */ - iwl_set_bit(priv, CSR_MAC_SHADOW_REG_CTRL, - 0x800FFFFF); - } - - set_bit(STATUS_INIT, &priv->status); - - return 0; -} - -/** - * iwlagn_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr - */ -static inline __le32 iwlagn_dma_addr2rbd_ptr(struct iwl_priv *priv, - dma_addr_t dma_addr) -{ - return cpu_to_le32((u32)(dma_addr >> 8)); -} - -/** - * iwlagn_rx_queue_restock - refill RX queue from pre-allocated pool - * - * If there are slots in the RX queue that need to be restocked, - * and we have free pre-allocated buffers, fill the ranks as much - * as we can, pulling from rx_free. - * - * This moves the 'write' index forward to catch up with 'processed', and - * also updates the memory address in the firmware to reference the new - * target buffer. - */ -void iwlagn_rx_queue_restock(struct iwl_priv *priv) -{ - struct iwl_rx_queue *rxq = &priv->rxq; - struct list_head *element; - struct iwl_rx_mem_buffer *rxb; - unsigned long flags; - - spin_lock_irqsave(&rxq->lock, flags); - while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) { - /* The overwritten rxb must be a used one */ - rxb = rxq->queue[rxq->write]; - BUG_ON(rxb && rxb->page); - - /* Get next free Rx buffer, remove from free list */ - element = rxq->rx_free.next; - rxb = list_entry(element, struct iwl_rx_mem_buffer, list); - list_del(element); - - /* Point to Rx buffer via next RBD in circular buffer */ - rxq->bd[rxq->write] = iwlagn_dma_addr2rbd_ptr(priv, - rxb->page_dma); - rxq->queue[rxq->write] = rxb; - rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; - rxq->free_count--; - } - spin_unlock_irqrestore(&rxq->lock, flags); - /* If the pre-allocated buffer pool is dropping low, schedule to - * refill it */ - if (rxq->free_count <= RX_LOW_WATERMARK) - queue_work(priv->workqueue, &priv->rx_replenish); - - - /* If we've added more space for the firmware to place data, tell it. - * Increment device's write pointer in multiples of 8. */ - if (rxq->write_actual != (rxq->write & ~0x7)) { - spin_lock_irqsave(&rxq->lock, flags); - rxq->need_update = 1; - spin_unlock_irqrestore(&rxq->lock, flags); - iwl_rx_queue_update_write_ptr(priv, rxq); - } -} - -/** - * iwlagn_rx_replenish - Move all used packet from rx_used to rx_free - * - * When moving to rx_free an SKB is allocated for the slot. - * - * Also restock the Rx queue via iwl_rx_queue_restock. - * This is called as a scheduled work item (except for during initialization) - */ -void iwlagn_rx_allocate(struct iwl_priv *priv, gfp_t priority) -{ - struct iwl_rx_queue *rxq = &priv->rxq; - struct list_head *element; - struct iwl_rx_mem_buffer *rxb; - struct page *page; - unsigned long flags; - gfp_t gfp_mask = priority; - - while (1) { - spin_lock_irqsave(&rxq->lock, flags); - if (list_empty(&rxq->rx_used)) { - spin_unlock_irqrestore(&rxq->lock, flags); - return; - } - spin_unlock_irqrestore(&rxq->lock, flags); - - if (rxq->free_count > RX_LOW_WATERMARK) - gfp_mask |= __GFP_NOWARN; - - if (priv->hw_params.rx_page_order > 0) - gfp_mask |= __GFP_COMP; - - /* Alloc a new receive buffer */ - page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order); - if (!page) { - if (net_ratelimit()) - IWL_DEBUG_INFO(priv, "alloc_pages failed, " - "order: %d\n", - priv->hw_params.rx_page_order); - - if ((rxq->free_count <= RX_LOW_WATERMARK) && - net_ratelimit()) - IWL_CRIT(priv, "Failed to alloc_pages with %s. Only %u free buffers remaining.\n", - priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL", - rxq->free_count); - /* We don't reschedule replenish work here -- we will - * call the restock method and if it still needs - * more buffers it will schedule replenish */ - return; - } - - spin_lock_irqsave(&rxq->lock, flags); - - if (list_empty(&rxq->rx_used)) { - spin_unlock_irqrestore(&rxq->lock, flags); - __free_pages(page, priv->hw_params.rx_page_order); - return; - } - element = rxq->rx_used.next; - rxb = list_entry(element, struct iwl_rx_mem_buffer, list); - list_del(element); - - spin_unlock_irqrestore(&rxq->lock, flags); - - BUG_ON(rxb->page); - rxb->page = page; - /* Get physical address of the RB */ - rxb->page_dma = pci_map_page(priv->pci_dev, page, 0, - PAGE_SIZE << priv->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - /* dma address must be no more than 36 bits */ - BUG_ON(rxb->page_dma & ~DMA_BIT_MASK(36)); - /* and also 256 byte aligned! */ - BUG_ON(rxb->page_dma & DMA_BIT_MASK(8)); - - spin_lock_irqsave(&rxq->lock, flags); - - list_add_tail(&rxb->list, &rxq->rx_free); - rxq->free_count++; - - spin_unlock_irqrestore(&rxq->lock, flags); - } -} - -void iwlagn_rx_replenish(struct iwl_priv *priv) -{ - unsigned long flags; - - iwlagn_rx_allocate(priv, GFP_KERNEL); - - spin_lock_irqsave(&priv->lock, flags); - iwlagn_rx_queue_restock(priv); - spin_unlock_irqrestore(&priv->lock, flags); -} - -void iwlagn_rx_replenish_now(struct iwl_priv *priv) -{ - iwlagn_rx_allocate(priv, GFP_ATOMIC); - - iwlagn_rx_queue_restock(priv); -} - -/* Assumes that the skb field of the buffers in 'pool' is kept accurate. - * If an SKB has been detached, the POOL needs to have its SKB set to NULL - * This free routine walks the list of POOL entries and if SKB is set to - * non NULL it is unmapped and freed - */ -void iwlagn_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq) -{ - int i; - for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { - if (rxq->pool[i].page != NULL) { - pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma, - PAGE_SIZE << priv->hw_params.rx_page_order, - PCI_DMA_FROMDEVICE); - __iwl_free_pages(priv, rxq->pool[i].page); - rxq->pool[i].page = NULL; - } - } - - dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, - rxq->bd_dma); - dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status), - rxq->rb_stts, rxq->rb_stts_dma); - rxq->bd = NULL; - rxq->rb_stts = NULL; -} - -int iwlagn_rxq_stop(struct iwl_priv *priv) -{ - - /* stop Rx DMA */ - iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); - iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG, - FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000); - - return 0; -} - int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band) { int idx = 0; @@ -1126,7 +755,7 @@ static int iwl_get_channels_for_scan(struct iwl_priv *priv, static int iwl_fill_offch_tx(struct iwl_priv *priv, void *data, size_t maxlen) { - struct sk_buff *skb = priv->_agn.offchan_tx_skb; + struct sk_buff *skb = priv->offchan_tx_skb; if (skb->len < maxlen) maxlen = skb->len; @@ -1141,6 +770,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) struct iwl_host_cmd cmd = { .id = REPLY_SCAN_CMD, .len = { sizeof(struct iwl_scan_cmd), }, + .flags = CMD_SYNC, }; struct iwl_scan_cmd *scan; struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; @@ -1211,7 +841,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) } else if (priv->scan_type == IWL_SCAN_OFFCH_TX) { scan->suspend_time = 0; scan->max_out_time = - cpu_to_le32(1024 * priv->_agn.offchan_tx_timeout); + cpu_to_le32(1024 * priv->offchan_tx_timeout); } switch (priv->scan_type) { @@ -1399,9 +1029,9 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) scan_ch = (void *)&scan->data[cmd_len]; scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE; scan_ch->channel = - cpu_to_le16(priv->_agn.offchan_tx_chan->hw_value); + cpu_to_le16(priv->offchan_tx_chan->hw_value); scan_ch->active_dwell = - cpu_to_le16(priv->_agn.offchan_tx_timeout); + cpu_to_le16(priv->offchan_tx_timeout); scan_ch->passive_dwell = 0; /* Set txpower levels to defaults */ @@ -1411,7 +1041,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) * power level: * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; */ - if (priv->_agn.offchan_tx_chan->band == IEEE80211_BAND_5GHZ) + if (priv->offchan_tx_chan->band == IEEE80211_BAND_5GHZ) scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; else scan_ch->tx_gain = ((1 << 5) | (5 << 3)); @@ -1433,17 +1063,14 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) /* set scan bit here for PAN params */ set_bit(STATUS_SCAN_HW, &priv->status); - if (priv->cfg->ops->hcmd->set_pan_params) { - ret = priv->cfg->ops->hcmd->set_pan_params(priv); - if (ret) - return ret; - } + ret = iwlagn_set_pan_params(priv); + if (ret) + return ret; - ret = iwl_send_cmd_sync(priv, &cmd); + ret = trans_send_cmd(&priv->trans, &cmd); if (ret) { clear_bit(STATUS_SCAN_HW, &priv->status); - if (priv->cfg->ops->hcmd->set_pan_params) - priv->cfg->ops->hcmd->set_pan_params(priv); + iwlagn_set_pan_params(priv); } return ret; @@ -1528,23 +1155,32 @@ int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control) might_sleep(); memset(&flush_cmd, 0, sizeof(flush_cmd)); - flush_cmd.fifo_control = IWL_TX_FIFO_VO_MSK | IWL_TX_FIFO_VI_MSK | - IWL_TX_FIFO_BE_MSK | IWL_TX_FIFO_BK_MSK; - if (priv->cfg->sku & IWL_SKU_N) + if (flush_control & BIT(IWL_RXON_CTX_BSS)) + flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK | + IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | + IWL_SCD_MGMT_MSK; + if ((flush_control & BIT(IWL_RXON_CTX_PAN)) && + (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))) + flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK | + IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK | + IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK | + IWL_PAN_SCD_MULTICAST_MSK; + + if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE) flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK; IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n", flush_cmd.fifo_control); flush_cmd.flush_control = cpu_to_le16(flush_control); - return iwl_send_cmd(priv, &cmd); + return trans_send_cmd(&priv->trans, &cmd); } void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control) { mutex_lock(&priv->mutex); ieee80211_stop_queues(priv->hw); - if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) { + if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) { IWL_ERR(priv, "flush request fail\n"); goto done; } @@ -1699,18 +1335,21 @@ void iwlagn_send_advance_bt_config(struct iwl_priv *priv) * (might be in monitor mode), or the interface is in * IBSS mode (no proper uCode support for coex then). */ - if (!bt_coex_active || priv->iw_mode == NL80211_IFTYPE_ADHOC) { + if (!iwlagn_mod_params.bt_coex_active || + priv->iw_mode == NL80211_IFTYPE_ADHOC) { basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED; } else { basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W << IWLAGN_BT_FLAG_COEX_MODE_SHIFT; - if (priv->cfg->bt_params && - priv->cfg->bt_params->bt_sco_disable) + + if (!priv->bt_enable_pspoll) basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; + else + basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; if (priv->bt_ch_announce) basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION; - IWL_DEBUG_INFO(priv, "BT coex flag: 0X%x\n", basic.flags); + IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags); } priv->bt_enable_flag = basic.flags; if (priv->bt_full_concurrent) @@ -1720,7 +1359,7 @@ void iwlagn_send_advance_bt_config(struct iwl_priv *priv) memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup, sizeof(iwlagn_def_3w_lookup)); - IWL_DEBUG_INFO(priv, "BT coex %s in %s mode\n", + IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n", basic.flags ? "active" : "disabled", priv->bt_full_concurrent ? "full concurrency" : "3-wire"); @@ -1728,19 +1367,97 @@ void iwlagn_send_advance_bt_config(struct iwl_priv *priv) if (priv->cfg->bt_params->bt_session_2) { memcpy(&bt_cmd_2000.basic, &basic, sizeof(basic)); - ret = iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, - sizeof(bt_cmd_2000), &bt_cmd_2000); + ret = trans_send_cmd_pdu(&priv->trans, REPLY_BT_CONFIG, + CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000); } else { memcpy(&bt_cmd_6000.basic, &basic, sizeof(basic)); - ret = iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, - sizeof(bt_cmd_6000), &bt_cmd_6000); + ret = trans_send_cmd_pdu(&priv->trans, REPLY_BT_CONFIG, + CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000); } if (ret) IWL_ERR(priv, "failed to send BT Coex Config\n"); } +void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena) +{ + struct iwl_rxon_context *ctx, *found_ctx = NULL; + bool found_ap = false; + + lockdep_assert_held(&priv->mutex); + + /* Check whether AP or GO mode is active. */ + if (rssi_ena) { + for_each_context(priv, ctx) { + if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP && + iwl_is_associated_ctx(ctx)) { + found_ap = true; + break; + } + } + } + + /* + * If disable was received or If GO/AP mode, disable RSSI + * measurements. + */ + if (!rssi_ena || found_ap) { + if (priv->cur_rssi_ctx) { + ctx = priv->cur_rssi_ctx; + ieee80211_disable_rssi_reports(ctx->vif); + priv->cur_rssi_ctx = NULL; + } + return; + } + + /* + * If rssi measurements need to be enabled, consider all cases now. + * Figure out how many contexts are active. + */ + for_each_context(priv, ctx) { + if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION && + iwl_is_associated_ctx(ctx)) { + found_ctx = ctx; + break; + } + } + + /* + * rssi monitor already enabled for the correct interface...nothing + * to do. + */ + if (found_ctx == priv->cur_rssi_ctx) + return; + + /* + * Figure out if rssi monitor is currently enabled, and needs + * to be changed. If rssi monitor is already enabled, disable + * it first else just enable rssi measurements on the + * interface found above. + */ + if (priv->cur_rssi_ctx) { + ctx = priv->cur_rssi_ctx; + if (ctx->vif) + ieee80211_disable_rssi_reports(ctx->vif); + } + + priv->cur_rssi_ctx = found_ctx; + + if (!found_ctx) + return; + + ieee80211_enable_rssi_reports(found_ctx->vif, + IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD, + IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD); +} + +static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg) +{ + return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >> + BT_UART_MSG_FRAME3SCOESCO_POS; +} + static void iwlagn_bt_traffic_change_work(struct work_struct *work) { struct iwl_priv *priv = @@ -1758,7 +1475,7 @@ static void iwlagn_bt_traffic_change_work(struct work_struct *work) * coex profile notifications. Ignore that since only bad consequence * can be not matching debug print with actual state. */ - IWL_DEBUG_INFO(priv, "BT traffic load changes: %d\n", + IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n", priv->bt_traffic_load); switch (priv->bt_traffic_load) { @@ -1793,23 +1510,43 @@ static void iwlagn_bt_traffic_change_work(struct work_struct *work) if (test_bit(STATUS_SCAN_HW, &priv->status)) goto out; - if (priv->cfg->ops->lib->update_chain_flags) - priv->cfg->ops->lib->update_chain_flags(priv); + iwl_update_chain_flags(priv); if (smps_request != -1) { + priv->current_ht_config.smps = smps_request; for_each_context(priv, ctx) { if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) ieee80211_request_smps(ctx->vif, smps_request); } } + + /* + * Dynamic PS poll related functionality. Adjust RSSI measurements if + * necessary. + */ + iwlagn_bt_coex_rssi_monitor(priv); out: mutex_unlock(&priv->mutex); } +/* + * If BT sco traffic, and RSSI monitor is enabled, move measurements to the + * correct interface or disable it if this is the last interface to be + * removed. + */ +void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv) +{ + if (priv->bt_is_sco && + priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS) + iwlagn_bt_adjust_rssi_monitor(priv, true); + else + iwlagn_bt_adjust_rssi_monitor(priv, false); +} + static void iwlagn_print_uartmsg(struct iwl_priv *priv, struct iwl_bt_uart_msg *uart_msg) { - IWL_DEBUG_NOTIF(priv, "Message Type = 0x%X, SSN = 0x%X, " + IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, " "Update Req = 0x%X", (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >> BT_UART_MSG_FRAME1MSGTYPE_POS, @@ -1818,7 +1555,7 @@ static void iwlagn_print_uartmsg(struct iwl_priv *priv, (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >> BT_UART_MSG_FRAME1UPDATEREQ_POS); - IWL_DEBUG_NOTIF(priv, "Open connections = 0x%X, Traffic load = 0x%X, " + IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, " "Chl_SeqN = 0x%X, In band = 0x%X", (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >> BT_UART_MSG_FRAME2OPENCONNECTIONS_POS, @@ -1829,7 +1566,7 @@ static void iwlagn_print_uartmsg(struct iwl_priv *priv, (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >> BT_UART_MSG_FRAME2INBAND_POS); - IWL_DEBUG_NOTIF(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, " + IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, " "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X", (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >> BT_UART_MSG_FRAME3SCOESCO_POS, @@ -1844,11 +1581,11 @@ static void iwlagn_print_uartmsg(struct iwl_priv *priv, (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >> BT_UART_MSG_FRAME3OBEX_POS); - IWL_DEBUG_NOTIF(priv, "Idle duration = 0x%X", + IWL_DEBUG_COEX(priv, "Idle duration = 0x%X", (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >> BT_UART_MSG_FRAME4IDLEDURATION_POS); - IWL_DEBUG_NOTIF(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, " + IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, " "eSCO Retransmissions = 0x%X", (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >> BT_UART_MSG_FRAME5TXACTIVITY_POS, @@ -1857,13 +1594,13 @@ static void iwlagn_print_uartmsg(struct iwl_priv *priv, (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >> BT_UART_MSG_FRAME5ESCORETRANSMIT_POS); - IWL_DEBUG_NOTIF(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X", + IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X", (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >> BT_UART_MSG_FRAME6SNIFFINTERVAL_POS, (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >> BT_UART_MSG_FRAME6DISCOVERABLE_POS); - IWL_DEBUG_NOTIF(priv, "Sniff Activity = 0x%X, Page = " + IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = " "0x%X, Inquiry = 0x%X, Connectable = 0x%X", (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >> BT_UART_MSG_FRAME7SNIFFACTIVITY_POS, @@ -1913,14 +1650,16 @@ void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv, return; } - IWL_DEBUG_NOTIF(priv, "BT Coex notification:\n"); - IWL_DEBUG_NOTIF(priv, " status: %d\n", coex->bt_status); - IWL_DEBUG_NOTIF(priv, " traffic load: %d\n", coex->bt_traffic_load); - IWL_DEBUG_NOTIF(priv, " CI compliance: %d\n", + IWL_DEBUG_COEX(priv, "BT Coex notification:\n"); + IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status); + IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load); + IWL_DEBUG_COEX(priv, " CI compliance: %d\n", coex->bt_ci_compliance); iwlagn_print_uartmsg(priv, uart_msg); priv->last_bt_traffic_load = priv->bt_traffic_load; + priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg); + if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { if (priv->bt_status != coex->bt_status || priv->last_bt_traffic_load != coex->bt_traffic_load) { @@ -1954,15 +1693,12 @@ void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv, void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv) { - iwlagn_rx_handler_setup(priv); priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] = iwlagn_bt_coex_profile_notif; } void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv) { - iwlagn_setup_deferred_work(priv); - INIT_WORK(&priv->bt_traffic_change_work, iwlagn_bt_traffic_change_work); } @@ -2274,9 +2010,9 @@ void iwlagn_init_notification_wait(struct iwl_priv *priv, wait_entry->triggered = false; wait_entry->aborted = false; - spin_lock_bh(&priv->_agn.notif_wait_lock); - list_add(&wait_entry->list, &priv->_agn.notif_waits); - spin_unlock_bh(&priv->_agn.notif_wait_lock); + spin_lock_bh(&priv->notif_wait_lock); + list_add(&wait_entry->list, &priv->notif_waits); + spin_unlock_bh(&priv->notif_wait_lock); } int iwlagn_wait_notification(struct iwl_priv *priv, @@ -2285,13 +2021,13 @@ int iwlagn_wait_notification(struct iwl_priv *priv, { int ret; - ret = wait_event_timeout(priv->_agn.notif_waitq, + ret = wait_event_timeout(priv->notif_waitq, wait_entry->triggered || wait_entry->aborted, timeout); - spin_lock_bh(&priv->_agn.notif_wait_lock); + spin_lock_bh(&priv->notif_wait_lock); list_del(&wait_entry->list); - spin_unlock_bh(&priv->_agn.notif_wait_lock); + spin_unlock_bh(&priv->notif_wait_lock); if (wait_entry->aborted) return -EIO; @@ -2305,91 +2041,7 @@ int iwlagn_wait_notification(struct iwl_priv *priv, void iwlagn_remove_notification(struct iwl_priv *priv, struct iwl_notification_wait *wait_entry) { - spin_lock_bh(&priv->_agn.notif_wait_lock); + spin_lock_bh(&priv->notif_wait_lock); list_del(&wait_entry->list); - spin_unlock_bh(&priv->_agn.notif_wait_lock); -} - -int iwlagn_start_device(struct iwl_priv *priv) -{ - int ret; - - if (iwl_prepare_card_hw(priv)) { - IWL_WARN(priv, "Exit HW not ready\n"); - return -EIO; - } - - /* If platform's RF_KILL switch is NOT set to KILL */ - if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) - clear_bit(STATUS_RF_KILL_HW, &priv->status); - else - set_bit(STATUS_RF_KILL_HW, &priv->status); - - if (iwl_is_rfkill(priv)) { - wiphy_rfkill_set_hw_state(priv->hw->wiphy, true); - iwl_enable_interrupts(priv); - return -ERFKILL; - } - - iwl_write32(priv, CSR_INT, 0xFFFFFFFF); - - ret = iwlagn_hw_nic_init(priv); - if (ret) { - IWL_ERR(priv, "Unable to init nic\n"); - return ret; - } - - /* make sure rfkill handshake bits are cleared */ - iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, - CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); - - /* clear (again), then enable host interrupts */ - iwl_write32(priv, CSR_INT, 0xFFFFFFFF); - iwl_enable_interrupts(priv); - - /* really make sure rfkill handshake bits are cleared */ - iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); - - return 0; -} - -void iwlagn_stop_device(struct iwl_priv *priv) -{ - unsigned long flags; - - /* stop and reset the on-board processor */ - iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); - - /* tell the device to stop sending interrupts */ - spin_lock_irqsave(&priv->lock, flags); - iwl_disable_interrupts(priv); - spin_unlock_irqrestore(&priv->lock, flags); - iwl_synchronize_irq(priv); - - /* device going down, Stop using ICT table */ - iwl_disable_ict(priv); - - /* - * If a HW restart happens during firmware loading, - * then the firmware loading might call this function - * and later it might be called again due to the - * restart. So don't process again if the device is - * already dead. - */ - if (test_bit(STATUS_DEVICE_ENABLED, &priv->status)) { - iwlagn_txq_ctx_stop(priv); - iwlagn_rxq_stop(priv); - - /* Power-down device's busmaster DMA clocks */ - iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); - udelay(5); - } - - /* Make sure (redundant) we've released our request to stay awake */ - iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - - /* Stop the device, and put it in low power state */ - iwl_apm_stop(priv); + spin_unlock_bh(&priv->notif_wait_lock); } |