diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 12 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 13 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-helpers.h | 21 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h | 45 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans-rx-pcie.c | 333 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans.c | 50 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans.h | 13 |
7 files changed, 255 insertions, 232 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 660abede935c..ca6bb7b1c96d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -3627,7 +3627,6 @@ int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops, IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); priv->cfg = cfg; - priv->inta_mask = CSR_INI_SET_MASK; /* is antenna coupling more than 35dB ? */ priv->bt_ant_couple_ok = @@ -3771,8 +3770,6 @@ out: void __devexit iwl_remove(struct iwl_priv * priv) { - unsigned long flags; - wait_for_completion(&priv->firmware_loading_complete); IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); @@ -3801,13 +3798,8 @@ void __devexit iwl_remove(struct iwl_priv * priv) iwl_tt_exit(priv); /* make sure we flush any pending irq or - * tasklet for the driver - */ - spin_lock_irqsave(&priv->shrd->lock, flags); - iwl_disable_interrupts(priv); - spin_unlock_irqrestore(&priv->shrd->lock, flags); - - iwl_trans_sync_irq(trans(priv)); + * tasklet for the driver */ + iwl_trans_disable_sync_irq(trans(priv)); iwl_dealloc_ucode(priv); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 8a8fc74eebca..40a01c0e4f30 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -1259,6 +1259,7 @@ struct iwl_priv { struct traffic_stats rx_stats; /* counts interrupts */ + /* TODO: move to the transport layer */ struct isr_statistics isr_stats; struct iwl_power_mgr power_data; @@ -1315,14 +1316,6 @@ struct iwl_priv { } accum_stats, delta_stats, max_delta_stats; #endif - /* INT ICT Table */ - __le32 *ict_tbl; - void *ict_tbl_vir; - dma_addr_t ict_tbl_dma; - dma_addr_t aligned_ict_tbl_dma; - int ict_index; - u32 inta; - bool use_ict; /* * reporting the number of tids has AGG on. 0 means * no AGGREGATION @@ -1379,8 +1372,6 @@ struct iwl_priv { struct iwl_rxon_context *cur_rssi_ctx; bool bt_is_sco; - u32 inta_mask; - struct work_struct restart; struct work_struct scan_completed; struct work_struct abort_scan; @@ -1398,8 +1389,6 @@ struct iwl_priv { struct work_struct bt_full_concurrency; struct work_struct bt_runtime_config; - struct tasklet_struct irq_tasklet; - struct delayed_work scan_check; /* TX Power */ diff --git a/drivers/net/wireless/iwlwifi/iwl-helpers.h b/drivers/net/wireless/iwlwifi/iwl-helpers.h index d053ed7ef794..09ed7af19889 100644 --- a/drivers/net/wireless/iwlwifi/iwl-helpers.h +++ b/drivers/net/wireless/iwlwifi/iwl-helpers.h @@ -132,33 +132,12 @@ static inline void iwl_wake_any_queue(struct iwl_priv *priv, #define ieee80211_wake_queue DO_NOT_USE_ieee80211_wake_queue -static inline void iwl_disable_interrupts(struct iwl_priv *priv) -{ - clear_bit(STATUS_INT_ENABLED, &priv->shrd->status); - - /* disable interrupts from uCode/NIC to host */ - iwl_write32(priv, CSR_INT_MASK, 0x00000000); - - /* acknowledge/clear/reset any interrupts still pending - * from uCode or flow handler (Rx/Tx DMA) */ - iwl_write32(priv, CSR_INT, 0xffffffff); - iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff); - IWL_DEBUG_ISR(priv, "Disabled interrupts\n"); -} - static inline void iwl_enable_rfkill_int(struct iwl_priv *priv) { IWL_DEBUG_ISR(priv, "Enabling rfkill interrupt\n"); iwl_write32(priv, CSR_INT_MASK, CSR_INT_BIT_RF_KILL); } -static inline void iwl_enable_interrupts(struct iwl_priv *priv) -{ - IWL_DEBUG_ISR(priv, "Enabling interrupts\n"); - set_bit(STATUS_INT_ENABLED, &priv->shrd->status); - iwl_write32(priv, CSR_INT_MASK, priv->inta_mask); -} - /** * iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time * @priv -- pointer to iwl_priv data structure diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h b/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h index 1d80515c1dbf..7e2f954c95f2 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h @@ -78,6 +78,18 @@ struct iwl_trans_pcie { struct iwl_rx_queue rxq; struct work_struct rx_replenish; struct iwl_trans *trans; + + /* INT ICT Table */ + __le32 *ict_tbl; + void *ict_tbl_vir; + dma_addr_t ict_tbl_dma; + dma_addr_t aligned_ict_tbl_dma; + int ict_index; + u32 inta; + bool use_ict; + struct tasklet_struct irq_tasklet; + + u32 inta_mask; }; #define IWL_TRANS_GET_PCIE_TRANS(_iwl_trans) \ @@ -87,7 +99,7 @@ struct iwl_trans_pcie { * RX ******************************************************/ void iwl_bg_rx_replenish(struct work_struct *data); -void iwl_irq_tasklet(struct iwl_priv *priv); +void iwl_irq_tasklet(struct iwl_trans *trans); void iwlagn_rx_replenish(struct iwl_trans *trans); void iwl_rx_queue_update_write_ptr(struct iwl_trans *trans, struct iwl_rx_queue *q); @@ -96,12 +108,11 @@ void iwl_rx_queue_update_write_ptr(struct iwl_trans *trans, * ICT ******************************************************/ int iwl_reset_ict(struct iwl_priv *priv); -void iwl_disable_ict(struct iwl_priv *priv); -int iwl_alloc_isr_ict(struct iwl_priv *priv); -void iwl_free_isr_ict(struct iwl_priv *priv); +void iwl_disable_ict(struct iwl_trans *trans); +int iwl_alloc_isr_ict(struct iwl_trans *trans); +void iwl_free_isr_ict(struct iwl_trans *trans); irqreturn_t iwl_isr_ict(int irq, void *data); - /***************************************************** * TX / HCMD ******************************************************/ @@ -130,4 +141,28 @@ void iwl_trans_tx_queue_set_status(struct iwl_priv *priv, void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, int sta_id, int tid, int frame_limit); +static inline void iwl_disable_interrupts(struct iwl_trans *trans) +{ + clear_bit(STATUS_INT_ENABLED, &trans->shrd->status); + + /* disable interrupts from uCode/NIC to host */ + iwl_write32(priv(trans), CSR_INT_MASK, 0x00000000); + + /* acknowledge/clear/reset any interrupts still pending + * from uCode or flow handler (Rx/Tx DMA) */ + iwl_write32(priv(trans), CSR_INT, 0xffffffff); + iwl_write32(priv(trans), CSR_FH_INT_STATUS, 0xffffffff); + IWL_DEBUG_ISR(trans, "Disabled interrupts\n"); +} + +static inline void iwl_enable_interrupts(struct iwl_trans *trans) +{ + struct iwl_trans_pcie *trans_pcie = + IWL_TRANS_GET_PCIE_TRANS(trans); + + IWL_DEBUG_ISR(trans, "Enabling interrupts\n"); + set_bit(STATUS_INT_ENABLED, &trans->shrd->status); + iwl_write32(priv(trans), CSR_INT_MASK, trans_pcie->inta_mask); +} + #endif /* __iwl_trans_int_pcie_h__ */ diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-rx-pcie.c b/drivers/net/wireless/iwlwifi/iwl-trans-rx-pcie.c index fb06acf83fc6..15e2645c2fb3 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans-rx-pcie.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans-rx-pcie.c @@ -497,7 +497,7 @@ static void iwl_rx_handle(struct iwl_trans *trans) } /* tasklet for iwlagn interrupt */ -void iwl_irq_tasklet(struct iwl_priv *priv) +void iwl_irq_tasklet(struct iwl_trans *trans) { u32 inta = 0; u32 handled = 0; @@ -507,7 +507,10 @@ void iwl_irq_tasklet(struct iwl_priv *priv) u32 inta_mask; #endif - spin_lock_irqsave(&priv->shrd->lock, flags); + struct iwl_trans_pcie *trans_pcie = + IWL_TRANS_GET_PCIE_TRANS(trans); + + spin_lock_irqsave(&trans->shrd->lock, flags); /* Ack/clear/reset pending uCode interrupts. * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, @@ -520,33 +523,34 @@ void iwl_irq_tasklet(struct iwl_priv *priv) * hardware bugs here by ACKing all the possible interrupts so that * interrupt coalescing can still be achieved. */ - iwl_write32(priv, CSR_INT, priv->inta | ~priv->inta_mask); + iwl_write32(priv(trans), CSR_INT, + trans_pcie->inta | ~trans_pcie->inta_mask); - inta = priv->inta; + inta = trans_pcie->inta; #ifdef CONFIG_IWLWIFI_DEBUG - if (iwl_get_debug_level(priv->shrd) & IWL_DL_ISR) { + if (iwl_get_debug_level(trans->shrd) & IWL_DL_ISR) { /* just for debug */ - inta_mask = iwl_read32(priv, CSR_INT_MASK); - IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ", + inta_mask = iwl_read32(priv(trans), CSR_INT_MASK); + IWL_DEBUG_ISR(trans, "inta 0x%08x, enabled 0x%08x\n ", inta, inta_mask); } #endif - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_irqrestore(&trans->shrd->lock, flags); - /* saved interrupt in inta variable now we can reset priv->inta */ - priv->inta = 0; + /* saved interrupt in inta variable now we can reset trans_pcie->inta */ + trans_pcie->inta = 0; /* Now service all interrupt bits discovered above. */ if (inta & CSR_INT_BIT_HW_ERR) { - IWL_ERR(priv, "Hardware error detected. Restarting.\n"); + IWL_ERR(trans, "Hardware error detected. Restarting.\n"); /* Tell the device to stop sending interrupts */ - iwl_disable_interrupts(priv); + iwl_disable_interrupts(trans); - priv->isr_stats.hw++; - iwl_irq_handle_error(priv); + priv(trans)->isr_stats.hw++; + iwl_irq_handle_error(priv(trans)); handled |= CSR_INT_BIT_HW_ERR; @@ -554,18 +558,18 @@ void iwl_irq_tasklet(struct iwl_priv *priv) } #ifdef CONFIG_IWLWIFI_DEBUG - if (iwl_get_debug_level(priv->shrd) & (IWL_DL_ISR)) { + if (iwl_get_debug_level(trans->shrd) & (IWL_DL_ISR)) { /* NIC fires this, but we don't use it, redundant with WAKEUP */ if (inta & CSR_INT_BIT_SCD) { - IWL_DEBUG_ISR(priv, "Scheduler finished to transmit " + IWL_DEBUG_ISR(trans, "Scheduler finished to transmit " "the frame/frames.\n"); - priv->isr_stats.sch++; + priv(trans)->isr_stats.sch++; } /* Alive notification via Rx interrupt will do the real work */ if (inta & CSR_INT_BIT_ALIVE) { - IWL_DEBUG_ISR(priv, "Alive interrupt\n"); - priv->isr_stats.alive++; + IWL_DEBUG_ISR(trans, "Alive interrupt\n"); + priv(trans)->isr_stats.alive++; } } #endif @@ -575,27 +579,29 @@ void iwl_irq_tasklet(struct iwl_priv *priv) /* HW RF KILL switch toggled */ if (inta & CSR_INT_BIT_RF_KILL) { int hw_rf_kill = 0; - if (!(iwl_read32(priv, CSR_GP_CNTRL) & + if (!(iwl_read32(priv(trans), CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) hw_rf_kill = 1; - IWL_WARN(priv, "RF_KILL bit toggled to %s.\n", + IWL_WARN(trans, "RF_KILL bit toggled to %s.\n", hw_rf_kill ? "disable radio" : "enable radio"); - priv->isr_stats.rfkill++; + priv(trans)->isr_stats.rfkill++; /* driver only loads ucode once setting the interface up. * the driver allows loading the ucode even if the radio * is killed. Hence update the killswitch state here. The * rfkill handler will care about restarting if needed. */ - if (!test_bit(STATUS_ALIVE, &priv->shrd->status)) { + if (!test_bit(STATUS_ALIVE, &trans->shrd->status)) { if (hw_rf_kill) - set_bit(STATUS_RF_KILL_HW, &priv->shrd->status); + set_bit(STATUS_RF_KILL_HW, + &trans->shrd->status); else clear_bit(STATUS_RF_KILL_HW, - &priv->shrd->status); - wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill); + &trans->shrd->status); + wiphy_rfkill_set_hw_state(priv(trans)->hw->wiphy, + hw_rf_kill); } handled |= CSR_INT_BIT_RF_KILL; @@ -603,30 +609,29 @@ void iwl_irq_tasklet(struct iwl_priv *priv) /* Chip got too hot and stopped itself */ if (inta & CSR_INT_BIT_CT_KILL) { - IWL_ERR(priv, "Microcode CT kill error detected.\n"); - priv->isr_stats.ctkill++; + IWL_ERR(trans, "Microcode CT kill error detected.\n"); + priv(trans)->isr_stats.ctkill++; handled |= CSR_INT_BIT_CT_KILL; } /* Error detected by uCode */ if (inta & CSR_INT_BIT_SW_ERR) { - IWL_ERR(priv, "Microcode SW error detected. " + IWL_ERR(trans, "Microcode SW error detected. " " Restarting 0x%X.\n", inta); - priv->isr_stats.sw++; - iwl_irq_handle_error(priv); + priv(trans)->isr_stats.sw++; + iwl_irq_handle_error(priv(trans)); handled |= CSR_INT_BIT_SW_ERR; } /* uCode wakes up after power-down sleep */ if (inta & CSR_INT_BIT_WAKEUP) { - struct iwl_trans_pcie *trans_pcie = - IWL_TRANS_GET_PCIE_TRANS(trans(priv)); - IWL_DEBUG_ISR(priv, "Wakeup interrupt\n"); - iwl_rx_queue_update_write_ptr(trans(priv), &trans_pcie->rxq); - for (i = 0; i < hw_params(priv).max_txq_num; i++) - iwl_txq_update_write_ptr(priv, &priv->txq[i]); + IWL_DEBUG_ISR(trans, "Wakeup interrupt\n"); + iwl_rx_queue_update_write_ptr(trans, &trans_pcie->rxq); + for (i = 0; i < hw_params(trans).max_txq_num; i++) + iwl_txq_update_write_ptr(priv(trans), + &priv(trans)->txq[i]); - priv->isr_stats.wakeup++; + priv(trans)->isr_stats.wakeup++; handled |= CSR_INT_BIT_WAKEUP; } @@ -636,15 +641,16 @@ void iwl_irq_tasklet(struct iwl_priv *priv) * notifications from uCode come through here*/ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX | CSR_INT_BIT_RX_PERIODIC)) { - IWL_DEBUG_ISR(priv, "Rx interrupt\n"); + IWL_DEBUG_ISR(trans, "Rx interrupt\n"); if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); - iwl_write32(priv, CSR_FH_INT_STATUS, + iwl_write32(priv(trans), CSR_FH_INT_STATUS, CSR_FH_INT_RX_MASK); } if (inta & CSR_INT_BIT_RX_PERIODIC) { handled |= CSR_INT_BIT_RX_PERIODIC; - iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC); + iwl_write32(priv(trans), + CSR_INT, CSR_INT_BIT_RX_PERIODIC); } /* Sending RX interrupt require many steps to be done in the * the device: @@ -658,9 +664,9 @@ void iwl_irq_tasklet(struct iwl_priv *priv) */ /* Disable periodic interrupt; we use it as just a one-shot. */ - iwl_write8(priv, CSR_INT_PERIODIC_REG, + iwl_write8(priv(trans), CSR_INT_PERIODIC_REG, CSR_INT_PERIODIC_DIS); - iwl_rx_handle(trans(priv)); + iwl_rx_handle(trans); /* * Enable periodic interrupt in 8 msec only if we received @@ -670,40 +676,40 @@ void iwl_irq_tasklet(struct iwl_priv *priv) * to extend the periodic interrupt; one-shot is enough. */ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) - iwl_write8(priv, CSR_INT_PERIODIC_REG, + iwl_write8(priv(trans), CSR_INT_PERIODIC_REG, CSR_INT_PERIODIC_ENA); - priv->isr_stats.rx++; + priv(trans)->isr_stats.rx++; } /* This "Tx" DMA channel is used only for loading uCode */ if (inta & CSR_INT_BIT_FH_TX) { - iwl_write32(priv, CSR_FH_INT_STATUS, CSR_FH_INT_TX_MASK); - IWL_DEBUG_ISR(priv, "uCode load interrupt\n"); - priv->isr_stats.tx++; + iwl_write32(priv(trans), CSR_FH_INT_STATUS, CSR_FH_INT_TX_MASK); + IWL_DEBUG_ISR(trans, "uCode load interrupt\n"); + priv(trans)->isr_stats.tx++; handled |= CSR_INT_BIT_FH_TX; /* Wake up uCode load routine, now that load is complete */ - priv->ucode_write_complete = 1; - wake_up_interruptible(&priv->wait_command_queue); + priv(trans)->ucode_write_complete = 1; + wake_up_interruptible(&priv(trans)->wait_command_queue); } if (inta & ~handled) { - IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled); - priv->isr_stats.unhandled++; + IWL_ERR(trans, "Unhandled INTA bits 0x%08x\n", inta & ~handled); + priv(trans)->isr_stats.unhandled++; } - if (inta & ~(priv->inta_mask)) { - IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n", - inta & ~priv->inta_mask); + if (inta & ~(trans_pcie->inta_mask)) { + IWL_WARN(trans, "Disabled INTA bits 0x%08x were pending\n", + inta & ~trans_pcie->inta_mask); } /* Re-enable all interrupts */ /* only Re-enable if disabled by irq */ - if (test_bit(STATUS_INT_ENABLED, &priv->shrd->status)) - iwl_enable_interrupts(priv); + if (test_bit(STATUS_INT_ENABLED, &trans->shrd->status)) + iwl_enable_interrupts(trans); /* Re-enable RF_KILL if it occurred */ else if (handled & CSR_INT_BIT_RF_KILL) - iwl_enable_rfkill_int(priv); + iwl_enable_rfkill_int(priv(trans)); } /****************************************************************************** @@ -714,18 +720,21 @@ void iwl_irq_tasklet(struct iwl_priv *priv) #define ICT_COUNT (PAGE_SIZE/sizeof(u32)) /* Free dram table */ -void iwl_free_isr_ict(struct iwl_priv *priv) +void iwl_free_isr_ict(struct iwl_trans *trans) { - if (priv->ict_tbl_vir) { - dma_free_coherent(priv->bus->dev, + struct iwl_trans_pcie *trans_pcie = + IWL_TRANS_GET_PCIE_TRANS(trans); + + if (trans_pcie->ict_tbl_vir) { + dma_free_coherent(bus(trans)->dev, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE, - priv->ict_tbl_vir, - priv->ict_tbl_dma); - priv->ict_tbl_vir = NULL; - memset(&priv->ict_tbl_dma, 0, - sizeof(priv->ict_tbl_dma)); - memset(&priv->aligned_ict_tbl_dma, 0, - sizeof(priv->aligned_ict_tbl_dma)); + trans_pcie->ict_tbl_vir, + trans_pcie->ict_tbl_dma); + trans_pcie->ict_tbl_vir = NULL; + memset(&trans_pcie->ict_tbl_dma, 0, + sizeof(trans_pcie->ict_tbl_dma)); + memset(&trans_pcie->aligned_ict_tbl_dma, 0, + sizeof(trans_pcie->aligned_ict_tbl_dma)); } } @@ -733,43 +742,45 @@ void iwl_free_isr_ict(struct iwl_priv *priv) /* allocate dram shared table it is a PAGE_SIZE aligned * also reset all data related to ICT table interrupt. */ -int iwl_alloc_isr_ict(struct iwl_priv *priv) +int iwl_alloc_isr_ict(struct iwl_trans *trans) { + struct iwl_trans_pcie *trans_pcie = + IWL_TRANS_GET_PCIE_TRANS(trans); /* allocate shrared data table */ - priv->ict_tbl_vir = - dma_alloc_coherent(priv->bus->dev, + trans_pcie->ict_tbl_vir = + dma_alloc_coherent(bus(trans)->dev, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE, - &priv->ict_tbl_dma, GFP_KERNEL); - if (!priv->ict_tbl_vir) + &trans_pcie->ict_tbl_dma, GFP_KERNEL); + if (!trans_pcie->ict_tbl_vir) return -ENOMEM; /* align table to PAGE_SIZE boundary */ - priv->aligned_ict_tbl_dma = - ALIGN(priv->ict_tbl_dma, PAGE_SIZE); + trans_pcie->aligned_ict_tbl_dma = + ALIGN(trans_pcie->ict_tbl_dma, PAGE_SIZE); - IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n", - (unsigned long long)priv->ict_tbl_dma, - (unsigned long long)priv->aligned_ict_tbl_dma, - (int)(priv->aligned_ict_tbl_dma - - priv->ict_tbl_dma)); + IWL_DEBUG_ISR(trans, "ict dma addr %Lx dma aligned %Lx diff %d\n", + (unsigned long long)trans_pcie->ict_tbl_dma, + (unsigned long long)trans_pcie->aligned_ict_tbl_dma, + (int)(trans_pcie->aligned_ict_tbl_dma - + trans_pcie->ict_tbl_dma)); - priv->ict_tbl = priv->ict_tbl_vir + - (priv->aligned_ict_tbl_dma - - priv->ict_tbl_dma); + trans_pcie->ict_tbl = trans_pcie->ict_tbl_vir + + (trans_pcie->aligned_ict_tbl_dma - + trans_pcie->ict_tbl_dma); - IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n", - priv->ict_tbl, priv->ict_tbl_vir, - (int)(priv->aligned_ict_tbl_dma - - priv->ict_tbl_dma)); + IWL_DEBUG_ISR(trans, "ict vir addr %p vir aligned %p diff %d\n", + trans_pcie->ict_tbl, trans_pcie->ict_tbl_vir, + (int)(trans_pcie->aligned_ict_tbl_dma - + trans_pcie->ict_tbl_dma)); /* reset table and index to all 0 */ - memset(priv->ict_tbl_vir, 0, + memset(trans_pcie->ict_tbl_vir, 0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE); - priv->ict_index = 0; + trans_pcie->ict_index = 0; /* add periodic RX interrupt */ - priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC; + trans_pcie->inta_mask |= CSR_INT_BIT_RX_PERIODIC; return 0; } @@ -780,110 +791,120 @@ int iwl_reset_ict(struct iwl_priv *priv) { u32 val; unsigned long flags; + struct iwl_trans *trans = trans(priv); + struct iwl_trans_pcie *trans_pcie = + IWL_TRANS_GET_PCIE_TRANS(trans); - if (!priv->ict_tbl_vir) + if (!trans_pcie->ict_tbl_vir) return 0; - spin_lock_irqsave(&priv->shrd->lock, flags); - iwl_disable_interrupts(priv); + spin_lock_irqsave(&trans->shrd->lock, flags); + iwl_disable_interrupts(trans); - memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT); + memset(&trans_pcie->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT); - val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT; + val = trans_pcie->aligned_ict_tbl_dma >> PAGE_SHIFT; val |= CSR_DRAM_INT_TBL_ENABLE; val |= CSR_DRAM_INIT_TBL_WRAP_CHECK; - IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X " + IWL_DEBUG_ISR(trans, "CSR_DRAM_INT_TBL_REG =0x%X " "aligned dma address %Lx\n", val, - (unsigned long long)priv->aligned_ict_tbl_dma); + (unsigned long long)trans_pcie->aligned_ict_tbl_dma); - iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val); - priv->use_ict = true; - priv->ict_index = 0; - iwl_write32(priv, CSR_INT, priv->inta_mask); - iwl_enable_interrupts(priv); - spin_unlock_irqrestore(&priv->shrd->lock, flags); + iwl_write32(priv(trans), CSR_DRAM_INT_TBL_REG, val); + trans_pcie->use_ict = true; + trans_pcie->ict_index = 0; + iwl_write32(priv(trans), CSR_INT, trans_pcie->inta_mask); + iwl_enable_interrupts(trans); + spin_unlock_irqrestore(&trans->shrd->lock, flags); return 0; } /* Device is going down disable ict interrupt usage */ -void iwl_disable_ict(struct iwl_priv *priv) +void iwl_disable_ict(struct iwl_trans *trans) { + struct iwl_trans_pcie *trans_pcie = + IWL_TRANS_GET_PCIE_TRANS(trans); + unsigned long flags; - spin_lock_irqsave(&priv->shrd->lock, flags); - priv->use_ict = false; - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_lock_irqsave(&trans->shrd->lock, flags); + trans_pcie->use_ict = false; + spin_unlock_irqrestore(&trans->shrd->lock, flags); } static irqreturn_t iwl_isr(int irq, void *data) { - struct iwl_priv *priv = data; + struct iwl_trans *trans = data; + struct iwl_trans_pcie *trans_pcie; u32 inta, inta_mask; unsigned long flags; #ifdef CONFIG_IWLWIFI_DEBUG u32 inta_fh; #endif - if (!priv) + if (!trans) return IRQ_NONE; - spin_lock_irqsave(&priv->shrd->lock, flags); + trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + + spin_lock_irqsave(&trans->shrd->lock, flags); /* Disable (but don't clear!) interrupts here to avoid * back-to-back ISRs and sporadic interrupts from our NIC. * If we have something to service, the tasklet will re-enable ints. * If we *don't* have something, we'll re-enable before leaving here. */ - inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ - iwl_write32(priv, CSR_INT_MASK, 0x00000000); + inta_mask = iwl_read32(priv(trans), CSR_INT_MASK); /* just for debug */ + iwl_write32(priv(trans), CSR_INT_MASK, 0x00000000); /* Discover which interrupts are active/pending */ - inta = iwl_read32(priv, CSR_INT); + inta = iwl_read32(priv(trans), CSR_INT); /* Ignore interrupt if there's nothing in NIC to service. * This may be due to IRQ shared with another device, * or due to sporadic interrupts thrown from our NIC. */ if (!inta) { - IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n"); + IWL_DEBUG_ISR(trans, "Ignore interrupt, inta == 0\n"); goto none; } if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { /* Hardware disappeared. It might have already raised * an interrupt */ - IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); + IWL_WARN(trans, "HARDWARE GONE?? INTA == 0x%08x\n", inta); goto unplugged; } #ifdef CONFIG_IWLWIFI_DEBUG - if (iwl_get_debug_level(priv->shrd) & (IWL_DL_ISR)) { - inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); - IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, " + if (iwl_get_debug_level(trans->shrd) & (IWL_DL_ISR)) { + inta_fh = iwl_read32(priv(trans), CSR_FH_INT_STATUS); + IWL_DEBUG_ISR(trans, "ISR inta 0x%08x, enabled 0x%08x, " "fh 0x%08x\n", inta, inta_mask, inta_fh); } #endif - priv->inta |= inta; + trans_pcie->inta |= inta; /* iwl_irq_tasklet() will service interrupts and re-enable them */ if (likely(inta)) - tasklet_schedule(&priv->irq_tasklet); - else if (test_bit(STATUS_INT_ENABLED, &priv->shrd->status) && - !priv->inta) - iwl_enable_interrupts(priv); + tasklet_schedule(&trans_pcie->irq_tasklet); + else if (test_bit(STATUS_INT_ENABLED, &trans->shrd->status) && + !trans_pcie->inta) + iwl_enable_interrupts(trans); unplugged: - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_irqrestore(&trans->shrd->lock, flags); return IRQ_HANDLED; none: /* re-enable interrupts here since we don't have anything to service. */ /* only Re-enable if disabled by irq and no schedules tasklet. */ - if (test_bit(STATUS_INT_ENABLED, &priv->shrd->status) && !priv->inta) - iwl_enable_interrupts(priv); + if (test_bit(STATUS_INT_ENABLED, &trans->shrd->status) && + !trans_pcie->inta) + iwl_enable_interrupts(trans); - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_irqrestore(&trans->shrd->lock, flags); return IRQ_NONE; } @@ -897,50 +918,53 @@ static irqreturn_t iwl_isr(int irq, void *data) */ irqreturn_t iwl_isr_ict(int irq, void *data) { - struct iwl_priv *priv = data; + struct iwl_trans *trans = data; + struct iwl_trans_pcie *trans_pcie; u32 inta, inta_mask; u32 val = 0; unsigned long flags; - if (!priv) + if (!trans) return IRQ_NONE; + trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + /* dram interrupt table not set yet, * use legacy interrupt. */ - if (!priv->use_ict) + if (!trans_pcie->use_ict) return iwl_isr(irq, data); - spin_lock_irqsave(&priv->shrd->lock, flags); + spin_lock_irqsave(&trans->shrd->lock, flags); /* Disable (but don't clear!) interrupts here to avoid * back-to-back ISRs and sporadic interrupts from our NIC. * If we have something to service, the tasklet will re-enable ints. * If we *don't* have something, we'll re-enable before leaving here. */ - inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ - iwl_write32(priv, CSR_INT_MASK, 0x00000000); + inta_mask = iwl_read32(priv(trans), CSR_INT_MASK); /* just for debug */ + iwl_write32(priv(trans), CSR_INT_MASK, 0x00000000); /* Ignore interrupt if there's nothing in NIC to service. * This may be due to IRQ shared with another device, * or due to sporadic interrupts thrown from our NIC. */ - if (!priv->ict_tbl[priv->ict_index]) { - IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n"); + if (!trans_pcie->ict_tbl[trans_pcie->ict_index]) { + IWL_DEBUG_ISR(trans, "Ignore interrupt, inta == 0\n"); goto none; } /* read all entries that not 0 start with ict_index */ - while (priv->ict_tbl[priv->ict_index]) { + while (trans_pcie->ict_tbl[trans_pcie->ict_index]) { - val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]); - IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n", - priv->ict_index, + val |= le32_to_cpu(trans_pcie->ict_tbl[trans_pcie->ict_index]); + IWL_DEBUG_ISR(trans, "ICT index %d value 0x%08X\n", + trans_pcie->ict_index, le32_to_cpu( - priv->ict_tbl[priv->ict_index])); - priv->ict_tbl[priv->ict_index] = 0; - priv->ict_index = iwl_queue_inc_wrap(priv->ict_index, - ICT_COUNT); + trans_pcie->ict_tbl[trans_pcie->ict_index])); + trans_pcie->ict_tbl[trans_pcie->ict_index] = 0; + trans_pcie->ict_index = + iwl_queue_inc_wrap(trans_pcie->ict_index, ICT_COUNT); } @@ -959,34 +983,35 @@ irqreturn_t iwl_isr_ict(int irq, void *data) val |= 0x8000; inta = (0xff & val) | ((0xff00 & val) << 16); - IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n", + IWL_DEBUG_ISR(trans, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n", inta, inta_mask, val); - inta &= priv->inta_mask; - priv->inta |= inta; + inta &= trans_pcie->inta_mask; + trans_pcie->inta |= inta; /* iwl_irq_tasklet() will service interrupts and re-enable them */ if (likely(inta)) - tasklet_schedule(&priv->irq_tasklet); - else if (test_bit(STATUS_INT_ENABLED, &priv->shrd->status) && - !priv->inta) { + tasklet_schedule(&trans_pcie->irq_tasklet); + else if (test_bit(STATUS_INT_ENABLED, &trans->shrd->status) && + !trans_pcie->inta) { /* Allow interrupt if was disabled by this handler and * no tasklet was schedules, We should not enable interrupt, * tasklet will enable it. */ - iwl_enable_interrupts(priv); + iwl_enable_interrupts(trans); } - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_irqrestore(&trans->shrd->lock, flags); return IRQ_HANDLED; none: /* re-enable interrupts here since we don't have anything to service. * only Re-enable if disabled by irq. */ - if (test_bit(STATUS_INT_ENABLED, &priv->shrd->status) && !priv->inta) - iwl_enable_interrupts(priv); + if (test_bit(STATUS_INT_ENABLED, &trans->shrd->status) && + !trans_pcie->inta) + iwl_enable_interrupts(trans); - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_irqrestore(&trans->shrd->lock, flags); return IRQ_NONE; } diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c index 621b9a822090..687a09226e6d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans.c @@ -711,7 +711,7 @@ static int iwl_trans_pcie_start_device(struct iwl_priv *priv) if (iwl_is_rfkill(priv)) { wiphy_rfkill_set_hw_state(priv->hw->wiphy, true); - iwl_enable_interrupts(priv); + iwl_enable_interrupts(trans(priv)); return -ERFKILL; } @@ -730,7 +730,7 @@ static int iwl_trans_pcie_start_device(struct iwl_priv *priv) /* clear (again), then enable host interrupts */ iwl_write32(priv, CSR_INT, 0xFFFFFFFF); - iwl_enable_interrupts(priv); + iwl_enable_interrupts(trans(priv)); /* really make sure rfkill handshake bits are cleared */ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); @@ -931,19 +931,14 @@ static int iwl_trans_tx_stop(struct iwl_priv *priv) static void iwl_trans_pcie_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->shrd->lock, flags); - iwl_disable_interrupts(priv); - spin_unlock_irqrestore(&priv->shrd->lock, flags); - iwl_trans_sync_irq(trans(priv)); + iwl_trans_disable_sync_irq(trans(priv)); /* device going down, Stop using ICT table */ - iwl_disable_ict(priv); + iwl_disable_ict(trans(priv)); /* * If a HW restart happens during firmware loading, @@ -1132,19 +1127,20 @@ static int iwl_trans_pcie_request_irq(struct iwl_trans *trans) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - struct iwl_priv *priv = priv(trans); int err; - tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) - iwl_irq_tasklet, (unsigned long)priv); + trans_pcie->inta_mask = CSR_INI_SET_MASK; + + tasklet_init(&trans_pcie->irq_tasklet, (void (*)(unsigned long)) + iwl_irq_tasklet, (unsigned long)trans); - iwl_alloc_isr_ict(priv); + iwl_alloc_isr_ict(trans); err = request_irq(bus(trans)->irq, iwl_isr_ict, IRQF_SHARED, - DRV_NAME, priv); + DRV_NAME, trans); if (err) { - IWL_ERR(priv, "Error allocating IRQ %d\n", priv->bus->irq); - iwl_free_isr_ict(priv); + IWL_ERR(trans, "Error allocating IRQ %d\n", bus(trans)->irq); + iwl_free_isr_ict(trans); return err; } @@ -1152,17 +1148,25 @@ static int iwl_trans_pcie_request_irq(struct iwl_trans *trans) return 0; } -static void iwl_trans_pcie_sync_irq(struct iwl_priv *priv) +static void iwl_trans_pcie_disable_sync_irq(struct iwl_trans *trans) { + unsigned long flags; + struct iwl_trans_pcie *trans_pcie = + IWL_TRANS_GET_PCIE_TRANS(trans); + + spin_lock_irqsave(&trans->shrd->lock, flags); + iwl_disable_interrupts(trans); + spin_unlock_irqrestore(&trans->shrd->lock, flags); + /* wait to make sure we flush pending tasklet*/ - synchronize_irq(priv->bus->irq); - tasklet_kill(&priv->irq_tasklet); + synchronize_irq(bus(trans)->irq); + tasklet_kill(&trans_pcie->irq_tasklet); } static void iwl_trans_pcie_free(struct iwl_priv *priv) { - free_irq(priv->bus->irq, priv); - iwl_free_isr_ict(priv); + free_irq(priv->bus->irq, trans(priv)); + iwl_free_isr_ict(trans(priv)); kfree(trans(priv)); trans(priv) = NULL; } @@ -1191,7 +1195,7 @@ static int iwl_trans_pcie_resume(struct iwl_trans *trans) { bool hw_rfkill = false; - iwl_enable_interrupts(priv(trans)); + iwl_enable_interrupts(trans); if (!(iwl_read32(priv(trans), CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) @@ -1500,7 +1504,7 @@ const struct iwl_trans_ops trans_ops_pcie = { .kick_nic = iwl_trans_pcie_kick_nic, - .sync_irq = iwl_trans_pcie_sync_irq, + .disable_sync_irq = iwl_trans_pcie_disable_sync_irq, .free = iwl_trans_pcie_free, .dbgfs_register = iwl_trans_pcie_dbgfs_register, diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h index c12763c1a3a8..b4c7166a70e3 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@ -94,10 +94,9 @@ struct iwl_shared; * ready and a successful ADDBA response has been received. * @txq_agg_disable: de-configure a Tx queue to send AMPDUs * @kick_nic: remove the RESET from the embedded CPU and let it run - * @sync_irq: the upper layer will typically disable interrupt and call this - * handler. After this handler returns, it is guaranteed that all - * the ISR / tasklet etc... have finished running and the transport - * layer shall not pass any Rx. + * @disable_sync_irq: Disable and sync: after this handler returns, it is + * guaranteed that all the ISR / tasklet etc... have finished running + * and the transport layer shall not pass any Rx. * @free: release all the ressource for the transport layer itself such as * irq, tasklet etc... * @dbgfs_register: add the dbgfs files under this directory. Files will be @@ -132,7 +131,7 @@ struct iwl_trans_ops { void (*kick_nic)(struct iwl_priv *priv); - void (*sync_irq)(struct iwl_priv *priv); + void (*disable_sync_irq)(struct iwl_trans *trans); void (*free)(struct iwl_priv *priv); int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir); @@ -232,9 +231,9 @@ static inline void iwl_trans_kick_ni |