diff options
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/pcie.c | 187 | ||||
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/pcie.h | 17 |
2 files changed, 176 insertions, 28 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index f448d7ca4e7c..5e154649c6a2 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -2082,20 +2082,28 @@ mwifiex_check_winner_status(struct mwifiex_adapter *adapter) /* * This function reads the interrupt status from card. */ -static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) +static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter, + int msg_id) { u32 pcie_ireg; unsigned long flags; + struct pcie_service_card *card = adapter->card; if (!mwifiex_pcie_ok_to_access_hw(adapter)) return; - if (mwifiex_read_reg(adapter, PCIE_HOST_INT_STATUS, &pcie_ireg)) { - mwifiex_dbg(adapter, ERROR, "Read register failed\n"); - return; - } + if (card->msix_enable && msg_id >= 0) { + pcie_ireg = BIT(msg_id); + } else { + if (mwifiex_read_reg(adapter, PCIE_HOST_INT_STATUS, + &pcie_ireg)) { + mwifiex_dbg(adapter, ERROR, "Read register failed\n"); + return; + } + + if ((pcie_ireg == 0xFFFFFFFF) || !pcie_ireg) + return; - if ((pcie_ireg != 0xFFFFFFFF) && (pcie_ireg)) { mwifiex_pcie_disable_host_int(adapter); @@ -2106,20 +2114,23 @@ static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) "Write register failed\n"); return; } - spin_lock_irqsave(&adapter->int_lock, flags); - adapter->int_status |= pcie_ireg; - spin_unlock_irqrestore(&adapter->int_lock, flags); - - if (!adapter->pps_uapsd_mode && - adapter->ps_state == PS_STATE_SLEEP && - mwifiex_pcie_ok_to_access_hw(adapter)) { - /* Potentially for PCIe we could get other - * interrupts like shared. Don't change power - * state until cookie is set */ - adapter->ps_state = PS_STATE_AWAKE; - adapter->pm_wakeup_fw_try = false; - del_timer(&adapter->wakeup_timer); - } + } + + spin_lock_irqsave(&adapter->int_lock, flags); + adapter->int_status |= pcie_ireg; + spin_unlock_irqrestore(&adapter->int_lock, flags); + mwifiex_dbg(adapter, INTR, "ireg: 0x%08x\n", pcie_ireg); + + if (!adapter->pps_uapsd_mode && + adapter->ps_state == PS_STATE_SLEEP && + mwifiex_pcie_ok_to_access_hw(adapter)) { + /* Potentially for PCIe we could get other + * interrupts like shared. Don't change power + * state until cookie is set + */ + adapter->ps_state = PS_STATE_AWAKE; + adapter->pm_wakeup_fw_try = false; + del_timer(&adapter->wakeup_timer); } } @@ -2131,7 +2142,8 @@ static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) */ static irqreturn_t mwifiex_pcie_interrupt(int irq, void *context) { - struct pci_dev *pdev = (struct pci_dev *)context; + struct mwifiex_msix_context *ctx = context; + struct pci_dev *pdev = ctx->dev; struct pcie_service_card *card; struct mwifiex_adapter *adapter; @@ -2151,7 +2163,11 @@ static irqreturn_t mwifiex_pcie_interrupt(int irq, void *context) if (adapter->surprise_removed) goto exit; - mwifiex_interrupt_status(adapter); + if (card->msix_enable) + mwifiex_interrupt_status(adapter, ctx->msg_id); + else + mwifiex_interrupt_status(adapter, -1); + mwifiex_queue_main_work(adapter); exit: @@ -2171,7 +2187,7 @@ exit: * In case of Rx packets received, the packets are uploaded from card to * host and processed accordingly. */ -static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) +static int mwifiex_process_pcie_int(struct mwifiex_adapter *adapter) { int ret; u32 pcie_ireg; @@ -2251,6 +2267,69 @@ static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) return 0; } +static int mwifiex_process_msix_int(struct mwifiex_adapter *adapter) +{ + int ret; + u32 pcie_ireg; + unsigned long flags; + + spin_lock_irqsave(&adapter->int_lock, flags); + /* Clear out unused interrupts */ + pcie_ireg = adapter->int_status; + adapter->int_status = 0; + spin_unlock_irqrestore(&adapter->int_lock, flags); + + if (pcie_ireg & HOST_INTR_DNLD_DONE) { + mwifiex_dbg(adapter, INTR, + "info: TX DNLD Done\n"); + ret = mwifiex_pcie_send_data_complete(adapter); + if (ret) + return ret; + } + if (pcie_ireg & HOST_INTR_UPLD_RDY) { + mwifiex_dbg(adapter, INTR, + "info: Rx DATA\n"); + ret = mwifiex_pcie_process_recv_data(adapter); + if (ret) + return ret; + } + if (pcie_ireg & HOST_INTR_EVENT_RDY) { + mwifiex_dbg(adapter, INTR, + "info: Rx EVENT\n"); + ret = mwifiex_pcie_process_event_ready(adapter); + if (ret) + return ret; + } + + if (pcie_ireg & HOST_INTR_CMD_DONE) { + if (adapter->cmd_sent) { + mwifiex_dbg(adapter, INTR, + "info: CMD sent Interrupt\n"); + adapter->cmd_sent = false; + } + /* Handle command response */ + ret = mwifiex_pcie_process_cmd_complete(adapter); + if (ret) + return ret; + } + + mwifiex_dbg(adapter, INTR, + "info: cmd_sent=%d data_sent=%d\n", + adapter->cmd_sent, adapter->data_sent); + + return 0; +} + +static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) +{ + struct pcie_service_card *card = adapter->card; + + if (card->msix_enable) + return mwifiex_process_msix_int(adapter); + else + return mwifiex_process_pcie_int(adapter); +} + /* * This function downloads data from driver to card. * @@ -2602,10 +2681,43 @@ static void mwifiex_pcie_cleanup(struct mwifiex_adapter *adapter) static int mwifiex_pcie_request_irq(struct mwifiex_adapter *adapter) { - int ret; + int ret, i, j; struct pcie_service_card *card = adapter->card; struct pci_dev *pdev = card->dev; + if (card->pcie.reg->msix_support) { + for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++) + card->msix_entries[i].entry = i; + ret = pci_enable_msix_exact(pdev, card->msix_entries, + MWIFIEX_NUM_MSIX_VECTORS); + if (!ret) { + for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++) { + card->msix_ctx[i].dev = pdev; + card->msix_ctx[i].msg_id = i; + + ret = request_irq(card->msix_entries[i].vector, + mwifiex_pcie_interrupt, 0, + "MWIFIEX_PCIE_MSIX", + &card->msix_ctx[i]); + if (ret) + break; + } + + if (ret) { + mwifiex_dbg(adapter, INFO, "request_irq fail: %d\n", + ret); + for (j = 0; j < i; j++) + free_irq(card->msix_entries[j].vector, + &card->msix_ctx[i]); + pci_disable_msix(pdev); + } else { + mwifiex_dbg(adapter, MSG, "MSIx enabled!"); + card->msix_enable = 1; + return 0; + } + } + } + if (pci_enable_msi(pdev) != 0) pci_disable_msi(pdev); else @@ -2613,8 +2725,10 @@ static int mwifiex_pcie_request_irq(struct mwifiex_adapter *adapter) mwifiex_dbg(adapter, INFO, "msi_enable = %d\n", card->msi_enable); + card->share_irq_ctx.dev = pdev; + card->share_irq_ctx.msg_id = -1; ret = request_irq(pdev->irq, mwifiex_pcie_interrupt, IRQF_SHARED, - "MRVL_PCIE", pdev); + "MRVL_PCIE", &card->share_irq_ctx); if (ret) { pr_err("request_irq failed: ret=%d\n", ret); adapter->card = NULL; @@ -2660,11 +2774,28 @@ static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) { struct pcie_service_card *card = adapter->card; const struct mwifiex_pcie_card_reg *reg; + struct pci_dev *pdev = card->dev; + int i; if (card) { - mwifiex_dbg(adapter, INFO, - "%s(): calling free_irq()\n", __func__); - free_irq(card->dev->irq, card->dev); + if (card->msix_enable) { + for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++) + synchronize_irq(card->msix_entries[i].vector); + + for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++) + free_irq(card->msix_entries[i].vector, + &card->msix_ctx[i]); + + card->msix_enable = 0; + pci_disable_msix(pdev); + } else { + mwifiex_dbg(adapter, INFO, + "%s(): calling free_irq()\n", __func__); + free_irq(card->dev->irq, &card->share_irq_ctx); + + if (card->msi_enable) + pci_disable_msi(pdev); + } reg = card->pcie.reg; if (reg->sleep_cookie) diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h index 6fc28737b576..9700ac355e55 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.h +++ b/drivers/net/wireless/marvell/mwifiex/pcie.h @@ -135,6 +135,7 @@ struct mwifiex_pcie_card_reg { u16 fw_dump_ctrl; u16 fw_dump_start; u16 fw_dump_end; + u8 msix_support; }; static const struct mwifiex_pcie_card_reg mwifiex_reg_8766 = { @@ -166,6 +167,7 @@ static const struct mwifiex_pcie_card_reg mwifiex_reg_8766 = { .ring_tx_start_ptr = 0, .pfu_enabled = 0, .sleep_cookie = 1, + .msix_support = 0, }; static const struct mwifiex_pcie_card_reg mwifiex_reg_8897 = { @@ -200,6 +202,7 @@ static const struct mwifiex_pcie_card_reg mwifiex_reg_8897 = { .fw_dump_ctrl = 0xcf4, .fw_dump_start = 0xcf8, .fw_dump_end = 0xcff, + .msix_support = 0, }; static const struct mwifiex_pcie_card_reg mwifiex_reg_8997 = { @@ -231,6 +234,7 @@ static const struct mwifiex_pcie_card_reg mwifiex_reg_8997 = { .ring_tx_start_ptr = MWIFIEX_BD_FLAG_TX_START_PTR, .pfu_enabled = 1, .sleep_cookie = 0, + .msix_support = 1, }; struct mwifiex_pcie_device { @@ -290,6 +294,13 @@ struct mwifiex_pfu_buf_desc { u32 reserved; } __packed; +#define MWIFIEX_NUM_MSIX_VECTORS 4 + +struct mwifiex_msix_context { + struct pci_dev *dev; + u16 msg_id; +}; + struct pcie_service_card { struct pci_dev *dev; struct mwifiex_adapter *adapter; @@ -327,6 +338,12 @@ struct pcie_service_card { void __iomem *pci_mmap; void __iomem *pci_mmap1; int msi_enable; + int msix_enable; +#ifdef CONFIG_PCI + struct msix_entry msix_entries[MWIFIEX_NUM_MSIX_VECTORS]; +#endif + struct mwifiex_msix_context msix_ctx[MWIFIEX_NUM_MSIX_VECTORS]; + struct mwifiex_msix_context share_irq_ctx; }; static inline int |