From 27a3f2292ea2508d2d1ddd85846910a69ed95a3f Mon Sep 17 00:00:00 2001 From: John Garry Date: Wed, 18 Nov 2015 00:50:50 +0800 Subject: [PATCH] hisi_sas: Add cq interrupt handler Add cq interrupt handler and also slot error handler function. Signed-off-by: John Garry Reviewed-by: Arnd Bergmann Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas.h | 9 + drivers/scsi/hisi_sas/hisi_sas_main.c | 35 +++ drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 345 +++++++++++++++++++++++++ 3 files changed, 389 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 72657eb770f6..fe4055be325a 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -93,6 +93,8 @@ struct hisi_sas_slot { u64 n_elem; int dlvry_queue; int dlvry_queue_slot; + int cmplt_queue; + int cmplt_queue_slot; int idx; void *cmd_hdr; dma_addr_t cmd_hdr_dma; @@ -117,6 +119,10 @@ struct hisi_sas_hw { int (*prep_ssp)(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot, int is_tmf, struct hisi_sas_tmf_task *tmf); + int (*slot_complete)(struct hisi_hba *hisi_hba, + struct hisi_sas_slot *slot, int abort); + void (*free_device)(struct hisi_hba *hisi_hba, + struct hisi_sas_device *dev); int complete_hdr_size; }; @@ -311,4 +317,7 @@ extern int hisi_sas_probe(struct platform_device *pdev, const struct hisi_sas_hw *ops); extern int hisi_sas_remove(struct platform_device *pdev); +extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, + struct sas_task *task, + struct hisi_sas_slot *slot); #endif diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 660ef6cac3ab..ddbd2b711cf3 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -60,6 +60,41 @@ static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) for (i = 0; i < hisi_hba->slot_index_count; ++i) hisi_sas_slot_index_clear(hisi_hba, i); } + +void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, + struct hisi_sas_slot *slot) +{ + struct device *dev = &hisi_hba->pdev->dev; + + if (!slot->task) + return; + + if (!sas_protocol_ata(task->task_proto)) + if (slot->n_elem) + dma_unmap_sg(dev, task->scatter, slot->n_elem, + task->data_dir); + + if (slot->command_table) + dma_pool_free(hisi_hba->command_table_pool, + slot->command_table, slot->command_table_dma); + + if (slot->status_buffer) + dma_pool_free(hisi_hba->status_buffer_pool, + slot->status_buffer, slot->status_buffer_dma); + + if (slot->sge_page) + dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page, + slot->sge_page_dma); + + list_del_init(&slot->entry); + task->lldd_task = NULL; + slot->task = NULL; + slot->port = NULL; + hisi_sas_slot_index_free(hisi_hba, slot->idx); + memset(slot, 0, sizeof(*slot)); +} +EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); + static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot, int is_tmf, struct hisi_sas_tmf_task *tmf) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c index 07b9750d9af6..6711c0ae66b7 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c @@ -498,6 +498,28 @@ static void init_id_frame_v1_hw(struct hisi_hba *hisi_hba) config_id_frame_v1_hw(hisi_hba, i); } + +static void free_device_v1_hw(struct hisi_hba *hisi_hba, + struct hisi_sas_device *sas_dev) +{ + u64 dev_id = sas_dev->device_id; + struct hisi_sas_itct *itct = &hisi_hba->itct[dev_id]; + u32 qw0, reg_val = hisi_sas_read32(hisi_hba, CFG_AGING_TIME); + + reg_val |= CFG_AGING_TIME_ITCT_REL_MSK; + hisi_sas_write32(hisi_hba, CFG_AGING_TIME, reg_val); + + /* free itct */ + udelay(1); + reg_val = hisi_sas_read32(hisi_hba, CFG_AGING_TIME); + reg_val &= ~CFG_AGING_TIME_ITCT_REL_MSK; + hisi_sas_write32(hisi_hba, CFG_AGING_TIME, reg_val); + + qw0 = cpu_to_le64(itct->qw0); + qw0 &= ~ITCT_HDR_VALID_MSK; + itct->qw0 = cpu_to_le64(qw0); +} + static int reset_hw_v1_hw(struct hisi_hba *hisi_hba) { int i; @@ -932,6 +954,253 @@ static int prep_ssp_v1_hw(struct hisi_hba *hisi_hba, return 0; } +/* by default, task resp is complete */ +static void slot_err_v1_hw(struct hisi_hba *hisi_hba, + struct sas_task *task, + struct hisi_sas_slot *slot) +{ + struct task_status_struct *ts = &task->task_status; + struct hisi_sas_err_record *err_record = slot->status_buffer; + struct device *dev = &hisi_hba->pdev->dev; + + switch (task->task_proto) { + case SAS_PROTOCOL_SSP: + { + int error = -1; + u32 dma_err_type = cpu_to_le32(err_record->dma_err_type); + u32 dma_tx_err_type = ((dma_err_type & + ERR_HDR_DMA_TX_ERR_TYPE_MSK)) >> + ERR_HDR_DMA_TX_ERR_TYPE_OFF; + u32 dma_rx_err_type = ((dma_err_type & + ERR_HDR_DMA_RX_ERR_TYPE_MSK)) >> + ERR_HDR_DMA_RX_ERR_TYPE_OFF; + u32 trans_tx_fail_type = + cpu_to_le32(err_record->trans_tx_fail_type); + u32 trans_rx_fail_type = + cpu_to_le32(err_record->trans_rx_fail_type); + + if (dma_tx_err_type) { + /* dma tx err */ + error = ffs(dma_tx_err_type) + - 1 + DMA_TX_ERR_BASE; + } else if (dma_rx_err_type) { + /* dma rx err */ + error = ffs(dma_rx_err_type) + - 1 + DMA_RX_ERR_BASE; + } else if (trans_tx_fail_type) { + /* trans tx err */ + error = ffs(trans_tx_fail_type) + - 1 + TRANS_TX_FAIL_BASE; + } else if (trans_rx_fail_type) { + /* trans rx err */ + error = ffs(trans_rx_fail_type) + - 1 + TRANS_RX_FAIL_BASE; + } + + switch (error) { + case DMA_TX_DATA_UNDERFLOW_ERR: + case DMA_RX_DATA_UNDERFLOW_ERR: + { + ts->residual = 0; + ts->stat = SAS_DATA_UNDERRUN; + break; + } + case DMA_TX_DATA_SGL_OVERFLOW_ERR: + case DMA_TX_DIF_SGL_OVERFLOW_ERR: + case DMA_TX_XFER_RDY_LENGTH_OVERFLOW_ERR: + case DMA_RX_DATA_OVERFLOW_ERR: + case TRANS_RX_FRAME_OVERRUN_ERR: + case TRANS_RX_LINK_BUF_OVERRUN_ERR: + { + ts->stat = SAS_DATA_OVERRUN; + ts->residual = 0; + break; + } + case TRANS_TX_PHY_NOT_ENABLE_ERR: + { + ts->stat = SAS_PHY_DOWN; + break; + } + case TRANS_TX_OPEN_REJCT_WRONG_DEST_ERR: + case TRANS_TX_OPEN_REJCT_ZONE_VIOLATION_ERR: + case TRANS_TX_OPEN_REJCT_BY_OTHER_ERR: + case TRANS_TX_OPEN_REJCT_AIP_TIMEOUT_ERR: + case TRANS_TX_OPEN_REJCT_STP_BUSY_ERR: + case TRANS_TX_OPEN_REJCT_PROTOCOL_NOT_SUPPORT_ERR: + case TRANS_TX_OPEN_REJCT_RATE_NOT_SUPPORT_ERR: + case TRANS_TX_OPEN_REJCT_BAD_DEST_ERR: + case TRANS_TX_OPEN_BREAK_RECEIVE_ERR: + case TRANS_TX_OPEN_REJCT_PATHWAY_BLOCKED_ERR: + case TRANS_TX_OPEN_REJCT_NO_DEST_ERR: + case TRANS_TX_OPEN_RETRY_ERR: + { + ts->stat = SAS_OPEN_REJECT; + ts->open_rej_reason = SAS_OREJ_UNKNOWN; + break; + } + case TRANS_TX_OPEN_TIMEOUT_ERR: + { + ts->stat = SAS_OPEN_TO; + break; + } + case TRANS_TX_NAK_RECEIVE_ERR: + case TRANS_TX_ACK_NAK_TIMEOUT_ERR: + { + ts->stat = SAS_NAK_R_ERR; + break; + } + default: + { + ts->stat = SAM_STAT_CHECK_CONDITION; + break; + } + } + } + break; + case SAS_PROTOCOL_SMP: + ts->stat = SAM_STAT_CHECK_CONDITION; + break; + + case SAS_PROTOCOL_SATA: + case SAS_PROTOCOL_STP: + case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: + { + dev_err(dev, "slot err: SATA/STP not supported"); + } + break; + default: + break; + } + +} + +static int slot_complete_v1_hw(struct hisi_hba *hisi_hba, + struct hisi_sas_slot *slot, int abort) +{ + struct sas_task *task = slot->task; + struct hisi_sas_device *sas_dev; + struct device *dev = &hisi_hba->pdev->dev; + struct task_status_struct *ts; + struct domain_device *device; + enum exec_status sts; + struct hisi_sas_complete_v1_hdr *complete_queue = + (struct hisi_sas_complete_v1_hdr *) + hisi_hba->complete_hdr[slot->cmplt_queue]; + struct hisi_sas_complete_v1_hdr *complete_hdr; + u32 cmplt_hdr_data; + + complete_hdr = &complete_queue[slot->cmplt_queue_slot]; + cmplt_hdr_data = le32_to_cpu(complete_hdr->data); + + if (unlikely(!task || !task->lldd_task || !task->dev)) + return -EINVAL; + + ts = &task->task_status; + device = task->dev; + sas_dev = device->lldd_dev; + + task->task_state_flags &= + ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR); + task->task_state_flags |= SAS_TASK_STATE_DONE; + + memset(ts, 0, sizeof(*ts)); + ts->resp = SAS_TASK_COMPLETE; + + if (unlikely(!sas_dev || abort)) { + if (!sas_dev) + dev_dbg(dev, "slot complete: port has not device\n"); + ts->stat = SAS_PHY_DOWN; + goto out; + } + + if (cmplt_hdr_data & CMPLT_HDR_IO_CFG_ERR_MSK) { + u32 info_reg = hisi_sas_read32(hisi_hba, HGC_INVLD_DQE_INFO); + + if (info_reg & HGC_INVLD_DQE_INFO_DQ_MSK) + dev_err(dev, "slot complete: [%d:%d] has dq IPTT err", + slot->cmplt_queue, slot->cmplt_queue_slot); + + if (info_reg & HGC_INVLD_DQE_INFO_TYPE_MSK) + dev_err(dev, "slot complete: [%d:%d] has dq type err", + slot->cmplt_queue, slot->cmplt_queue_slot); + + if (info_reg & HGC_INVLD_DQE_INFO_FORCE_MSK) + dev_err(dev, "slot complete: [%d:%d] has dq force phy err", + slot->cmplt_queue, slot->cmplt_queue_slot); + + if (info_reg & HGC_INVLD_DQE_INFO_PHY_MSK) + dev_err(dev, "slot complete: [%d:%d] has dq phy id err", + slot->cmplt_queue, slot->cmplt_queue_slot); + + if (info_reg & HGC_INVLD_DQE_INFO_ABORT_MSK) + dev_err(dev, "slot complete: [%d:%d] has dq abort flag err", + slot->cmplt_queue, slot->cmplt_queue_slot); + + if (info_reg & HGC_INVLD_DQE_INFO_IPTT_OF_MSK) + dev_err(dev, "slot complete: [%d:%d] has dq IPTT or ICT err", + slot->cmplt_queue, slot->cmplt_queue_slot); + + if (info_reg & HGC_INVLD_DQE_INFO_SSP_ERR_MSK) + dev_err(dev, "slot complete: [%d:%d] has dq SSP frame type err", + slot->cmplt_queue, slot->cmplt_queue_slot); + + if (info_reg & HGC_INVLD_DQE_INFO_OFL_MSK) + dev_err(dev, "slot complete: [%d:%d] has dq order frame len err", + slot->cmplt_queue, slot->cmplt_queue_slot); + + ts->stat = SAS_OPEN_REJECT; + ts->open_rej_reason = SAS_OREJ_UNKNOWN; + goto out; + } + + if (cmplt_hdr_data & CMPLT_HDR_ERR_RCRD_XFRD_MSK) { + if (!(cmplt_hdr_data & CMPLT_HDR_CMD_CMPLT_MSK) || + !(cmplt_hdr_data & CMPLT_HDR_RSPNS_XFRD_MSK)) + ts->stat = SAS_DATA_OVERRUN; + else + slot_err_v1_hw(hisi_hba, task, slot); + + goto out; + } + + switch (task->task_proto) { + case SAS_PROTOCOL_SSP: + { + struct ssp_response_iu *iu = slot->status_buffer + + sizeof(struct hisi_sas_err_record); + sas_ssp_task_response(dev, task, iu); + break; + } + case SAS_PROTOCOL_SATA: + case SAS_PROTOCOL_STP: + case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: + dev_err(dev, "slot complete: SATA/STP not supported"); + break; + + default: + ts->stat = SAM_STAT_CHECK_CONDITION; + break; + } + + if (!slot->port->port_attached) { + dev_err(dev, "slot complete: port %d has removed\n", + slot->port->sas_port.id); + ts->stat = SAS_PHY_DOWN; + } + +out: + if (sas_dev && sas_dev->running_req) + sas_dev->running_req--; + + hisi_sas_slot_task_free(hisi_hba, task, slot); + sts = ts->stat; + + if (task->task_done) + task->task_done(task); + + return sts; +} + /* Interrupts */ static irqreturn_t int_phyup_v1_hw(int irq_no, void *p) { @@ -1011,9 +1280,61 @@ end: return res; } + +static irqreturn_t cq_interrupt_v1_hw(int irq, void *p) +{ + struct hisi_sas_cq *cq = p; + struct hisi_hba *hisi_hba = cq->hisi_hba; + struct hisi_sas_slot *slot; + int queue = cq->id; + struct hisi_sas_complete_v1_hdr *complete_queue = + (struct hisi_sas_complete_v1_hdr *) + hisi_hba->complete_hdr[queue]; + u32 irq_value, rd_point, wr_point; + + irq_value = hisi_sas_read32(hisi_hba, OQ_INT_SRC); + + hisi_sas_write32(hisi_hba, OQ_INT_SRC, 1 << queue); + + rd_point = hisi_sas_read32(hisi_hba, + COMPL_Q_0_RD_PTR + (0x14 * queue)); + wr_point = hisi_sas_read32(hisi_hba, + COMPL_Q_0_WR_PTR + (0x14 * queue)); + + while (rd_point != wr_point) { + struct hisi_sas_complete_v1_hdr *complete_hdr; + int idx; + u32 cmplt_hdr_data; + + complete_hdr = &complete_queue[rd_point]; + cmplt_hdr_data = cpu_to_le32(complete_hdr->data); + idx = (cmplt_hdr_data & CMPLT_HDR_IPTT_MSK) >> + CMPLT_HDR_IPTT_OFF; + slot = &hisi_hba->slot_info[idx]; + + /* The completion queue and queue slot index are not + * necessarily the same as the delivery queue and + * queue slot index. + */ + slot->cmplt_queue_slot = rd_point; + slot->cmplt_queue = queue; + slot_complete_v1_hw(hisi_hba, slot, 0); + + if (++rd_point >= HISI_SAS_QUEUE_SLOTS) + rd_point = 0; + } + + /* update rd_point */ + hisi_sas_write32(hisi_hba, COMPL_Q_0_RD_PTR + (0x14 * queue), rd_point); + + return IRQ_HANDLED; +} + static const char phy_int_names[HISI_SAS_PHY_INT_NR][32] = { {"Phy Up"}, }; + +static const char cq_int_name[32] = "cq"; static irq_handler_t phy_interrupts[HISI_SAS_PHY_INT_NR] = { int_phyup_v1_hw, }; @@ -1056,6 +1377,28 @@ static int interrupt_init_v1_hw(struct hisi_hba *hisi_hba) } } } + + idx = hisi_hba->n_phy * HISI_SAS_PHY_INT_NR; + for (i = 0; i < hisi_hba->queue_count; i++, idx++) { + irq = irq_of_parse_and_map(np, idx); + if (!irq) { + dev_err(dev, "irq init: could not map cq interrupt %d\n", + idx); + return -ENOENT; + } + (void)snprintf(&int_names[idx * HISI_SAS_NAME_LEN], + HISI_SAS_NAME_LEN, + "%s %s:%d", dev_name(dev), cq_int_name, i); + rc = devm_request_irq(dev, irq, cq_interrupt_v1_hw, 0, + &int_names[idx * HISI_SAS_NAME_LEN], + &hisi_hba->cq[i]); + if (rc) { + dev_err(dev, "irq init: could not request cq interrupt %d, rc=%d\n", + irq, rc); + return -ENOENT; + } + } + return 0; } @@ -1110,9 +1453,11 @@ static int hisi_sas_v1_init(struct hisi_hba *hisi_hba) static const struct hisi_sas_hw hisi_sas_v1_hw = { .hw_init = hisi_sas_v1_init, .sl_notify = sl_notify_v1_hw, + .free_device = free_device_v1_hw, .prep_ssp = prep_ssp_v1_hw, .get_free_slot = get_free_slot_v1_hw, .start_delivery = start_delivery_v1_hw, + .slot_complete = slot_complete_v1_hw, .complete_hdr_size = sizeof(struct hisi_sas_complete_v1_hdr), }; -- 2.20.1