diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/isci/request.c | 138 | ||||
| -rw-r--r-- | drivers/scsi/isci/request.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/isci/sas.h | 11 |
3 files changed, 65 insertions, 85 deletions
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 395084955150..1043fed2a40a 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2943,6 +2943,20 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, dma_unmap_sg(&isci_host->pdev->dev, task->scatter, request->num_sg_entries, task->data_dir); break; + case SAS_PROTOCOL_SMP: { + struct scatterlist *sg = &task->smp_task.smp_req; + struct smp_req *smp_req; + void *kaddr; + + dma_unmap_sg(&isci_host->pdev->dev, sg, 1, DMA_TO_DEVICE); + + /* need to swab it back in case the command buffer is re-used */ + kaddr = kmap_atomic(sg_page(sg), KM_IRQ0); + smp_req = kaddr + sg->offset; + sci_swab32_cpy(smp_req, smp_req, sg->length / sizeof(u32)); + kunmap_atomic(kaddr, KM_IRQ0); + break; + } default: break; } @@ -3160,7 +3174,7 @@ scic_io_request_construct(struct scic_sds_controller *scic, else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd)); else if (dev_is_expander(dev)) - memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd)); + /* pass */; else return SCI_FAILURE_UNSUPPORTED_PROTOCOL; @@ -3236,30 +3250,54 @@ static enum sci_status isci_request_stp_request_construct( return status; } -/* - * This function will fill in the SCU Task Context for a SMP request. The - * following important settings are utilized: -# task_type == - * SCU_TASK_TYPE_SMP. This simply indicates that a normal request type - * (i.e. non-raw frame) is being utilized to perform task management. -# - * control_frame == 1. This ensures that the proper endianess is set so - * that the bytes are transmitted in the right order for a smp request frame. - * @sci_req: This parameter specifies the smp request object being - * constructed. - * - */ -static void -scu_smp_request_construct_task_context(struct scic_sds_request *sci_req, - ssize_t req_len) +static enum sci_status +scic_io_request_construct_smp(struct device *dev, + struct scic_sds_request *sci_req, + struct sas_task *task) { - dma_addr_t dma_addr; + struct scatterlist *sg = &task->smp_task.smp_req; struct scic_sds_remote_device *sci_dev; - struct scic_sds_port *sci_port; struct scu_task_context *task_context; - ssize_t word_cnt = sizeof(struct smp_req) / sizeof(u32); + struct scic_sds_port *sci_port; + struct smp_req *smp_req; + void *kaddr; + u8 req_len; + u32 cmd; + + kaddr = kmap_atomic(sg_page(sg), KM_IRQ0); + smp_req = kaddr + sg->offset; + /* + * Look at the SMP requests' header fields; for certain SAS 1.x SMP + * functions under SAS 2.0, a zero request length really indicates + * a non-zero default length. + */ + if (smp_req->req_len == 0) { + switch (smp_req->func) { + case SMP_DISCOVER: + case SMP_REPORT_PHY_ERR_LOG: + case SMP_REPORT_PHY_SATA: + case SMP_REPORT_ROUTE_INFO: + smp_req->req_len = 2; + break; + case SMP_CONF_ROUTE_INFO: + case SMP_PHY_CONTROL: + case SMP_PHY_TEST_FUNCTION: + smp_req->req_len = 9; + break; + /* Default - zero is a valid default for 2.0. */ + } + } + req_len = smp_req->req_len; + sci_swab32_cpy(smp_req, smp_req, sg->length / sizeof(u32)); + cmd = *(u32 *) smp_req; + kunmap_atomic(kaddr, KM_IRQ0); + + if (!dma_map_sg(dev, sg, 1, DMA_TO_DEVICE)) + return SCI_FAILURE; + + sci_req->protocol = SCIC_SMP_PROTOCOL; /* byte swap the smp request. */ - sci_swab32_cpy(&sci_req->smp.cmd, &sci_req->smp.cmd, - word_cnt); task_context = scic_sds_request_get_task_context(sci_req); @@ -3307,7 +3345,7 @@ scu_smp_request_construct_task_context(struct scic_sds_request *sci_req, * 18h ~ 30h, protocol specific * since commandIU has been build by framework at this point, we just * copy the frist DWord from command IU to this location. */ - memcpy(&task_context->type.smp, &sci_req->smp.cmd, sizeof(u32)); + memcpy(&task_context->type.smp, &cmd, sizeof(u32)); /* * 40h @@ -3347,48 +3385,12 @@ scu_smp_request_construct_task_context(struct scic_sds_request *sci_req, * Copy the physical address for the command buffer to the SCU Task * Context command buffer should not contain command header. */ - dma_addr = scic_io_request_get_dma_addr(sci_req, - ((char *) &sci_req->smp.cmd) + - sizeof(u32)); - - task_context->command_iu_upper = upper_32_bits(dma_addr); - task_context->command_iu_lower = lower_32_bits(dma_addr); + task_context->command_iu_upper = upper_32_bits(sg_dma_address(sg)); + task_context->command_iu_lower = lower_32_bits(sg_dma_address(sg) + sizeof(u32)); /* SMP response comes as UF, so no need to set response IU address. */ task_context->response_iu_upper = 0; task_context->response_iu_lower = 0; -} - -static enum sci_status -scic_io_request_construct_smp(struct scic_sds_request *sci_req) -{ - struct smp_req *smp_req = &sci_req->smp.cmd; - - sci_req->protocol = SCIC_SMP_PROTOCOL; - - /* - * Look at the SMP requests' header fields; for certain SAS 1.x SMP - * functions under SAS 2.0, a zero request length really indicates - * a non-zero default length. - */ - if (smp_req->req_len == 0) { - switch (smp_req->func) { - case SMP_DISCOVER: - case SMP_REPORT_PHY_ERR_LOG: - case SMP_REPORT_PHY_SATA: - case SMP_REPORT_ROUTE_INFO: - smp_req->req_len = 2; - break; - case SMP_CONF_ROUTE_INFO: - case SMP_PHY_CONTROL: - case SMP_PHY_TEST_FUNCTION: - smp_req->req_len = 9; - break; - /* Default - zero is a valid default for 2.0. */ - } - } - - scu_smp_request_construct_task_context(sci_req, smp_req->req_len); sci_change_state(&sci_req->sm, SCI_REQ_CONSTRUCTED); @@ -3404,24 +3406,12 @@ scic_io_request_construct_smp(struct scic_sds_request *sci_req) */ static enum sci_status isci_smp_request_build(struct isci_request *ireq) { - enum sci_status status = SCI_FAILURE; struct sas_task *task = isci_request_access_task(ireq); + struct device *dev = &ireq->isci_host->pdev->dev; struct scic_sds_request *sci_req = &ireq->sci; + enum sci_status status = SCI_FAILURE; - dev_dbg(&ireq->isci_host->pdev->dev, - "%s: request = %p\n", __func__, ireq); - - dev_dbg(&ireq->isci_host->pdev->dev, - "%s: smp_req len = %d\n", - __func__, - task->smp_task.smp_req.length); - - /* copy the smp_command to the address; */ - sg_copy_to_buffer(&task->smp_task.smp_req, 1, - &sci_req->smp.cmd, - sizeof(struct smp_req)); - - status = scic_io_request_construct_smp(sci_req); + status = scic_io_request_construct_smp(dev, sci_req, task); if (status != SCI_SUCCESS) dev_warn(&ireq->isci_host->pdev->dev, "%s: failed with status = %d\n", diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index 324fb7b3ab42..7c8b59a7c02c 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -244,7 +244,6 @@ struct scic_sds_request { } ssp; struct { - struct smp_req cmd; struct smp_resp rsp; } smp; diff --git a/drivers/scsi/isci/sas.h b/drivers/scsi/isci/sas.h index 822a8dbd19ca..462b15174d3f 100644 --- a/drivers/scsi/isci/sas.h +++ b/drivers/scsi/isci/sas.h @@ -190,8 +190,6 @@ struct smp_req_phycntl { u8 _r_h[3]; /* bytes 37-39 */ } __packed; -#define SMP_REQ_VENDOR_SPECIFIC_MAX_LEN 1016 - /* * struct smp_req - This structure simply unionizes the existing request * structures into a common request type. @@ -203,14 +201,7 @@ struct smp_req { u8 func; /* byte 1 */ u8 alloc_resp_len; /* byte 2 */ u8 req_len; /* byte 3 */ - - union { /* bytes 4-N */ - u32 smp_req_gen; - struct smp_req_phy_id phy_id; - struct smp_req_phycntl phy_cntl; - struct smp_req_conf_rtinfo conf_rt_info; - u8 vendor[SMP_REQ_VENDOR_SPECIFIC_MAX_LEN]; - }; + u8 req_data[0]; } __packed; #define SMP_RESP_HDR_SZ 4 |