diff options
Diffstat (limited to 'drivers/scsi/isci')
| -rw-r--r-- | drivers/scsi/isci/Makefile | 1 | ||||
| -rw-r--r-- | drivers/scsi/isci/request.c | 462 | ||||
| -rw-r--r-- | drivers/scsi/isci/request.h | 42 | ||||
| -rw-r--r-- | drivers/scsi/isci/smp_request.c | 518 | ||||
| -rw-r--r-- | drivers/scsi/isci/stp_request.c | 6 |
5 files changed, 436 insertions, 593 deletions
diff --git a/drivers/scsi/isci/Makefile b/drivers/scsi/isci/Makefile index 43d2c050bd4..be2b67d0df8 100644 --- a/drivers/scsi/isci/Makefile +++ b/drivers/scsi/isci/Makefile @@ -7,5 +7,4 @@ isci-objs := init.o phy.o request.o sata.o \ remote_node_table.o \ unsolicited_frame_control.o \ stp_request.o \ - smp_request.o \ port_config.o \ diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 5f516811055..5201dc58a19 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -158,12 +158,6 @@ void scic_sds_request_build_sgl(struct scic_sds_request *sds_request) } } -static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req) -{ - if (sci_req->was_tag_assigned_by_user == false) - sci_req->task_context_buffer = &sci_req->tc; -} - static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req) { struct ssp_cmd_iu *cmd_iu; @@ -341,12 +335,6 @@ static void scu_ssp_io_request_construct_task_context( scic_sds_request_build_sgl(sci_req); } -static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req) -{ - if (sci_req->was_tag_assigned_by_user == false) - sci_req->task_context_buffer = &sci_req->tc; -} - /** * This method will fill in the SCU Task Context for a SSP Task request. The * following important settings are utilized: -# priority == @@ -1261,6 +1249,196 @@ static enum sci_status scic_sds_ssp_task_request_await_tc_response_frame_handler return SCI_SUCCESS; } +/** + * This method processes an abnormal TC completion while the SMP request is + * waiting for a response frame. It decides what happened to the IO based + * on TC completion status. + * @sci_req: This parameter specifies the request for which the TC + * completion was received. + * @completion_code: This parameter indicates the completion status information + * for the TC. + * + * Indicate if the tc completion handler was successful. SCI_SUCCESS currently + * this method always returns success. + */ +static enum sci_status scic_sds_smp_request_await_response_tc_completion_handler( + struct scic_sds_request *sci_req, + u32 completion_code) +{ + switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { + case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): + /* + * In the AWAIT RESPONSE state, any TC completion is unexpected. + * but if the TC has success status, we complete the IO anyway. */ + scic_sds_request_set_status( + sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS + ); + + sci_base_state_machine_change_state( + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); + break; + + case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR): + case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR): + case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR): + case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR): + /* + * These status has been seen in a specific LSI expander, which sometimes + * is not able to send smp response within 2 ms. This causes our hardware + * break the connection and set TC completion with one of these SMP_XXX_XX_ERR + * status. For these type of error, we ask scic user to retry the request. */ + scic_sds_request_set_status( + sci_req, SCU_TASK_DONE_SMP_RESP_TO_ERR, SCI_FAILURE_RETRY_REQUIRED + ); + + sci_base_state_machine_change_state( + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); + break; + + default: + /* + * All other completion status cause the IO to be complete. If a NAK + * was received, then it is up to the user to retry the request. */ + scic_sds_request_set_status( + sci_req, + SCU_NORMALIZE_COMPLETION_STATUS(completion_code), + SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR + ); + + sci_base_state_machine_change_state( + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); + break; + } + + return SCI_SUCCESS; +} + +/* + * This function processes an unsolicited frame while the SMP request is waiting + * for a response frame. It will copy the response data, release the + * unsolicited frame, and transition the request to the + * SCI_BASE_REQUEST_STATE_COMPLETED state. + * @sci_req: This parameter specifies the request for which the + * unsolicited frame was received. + * @frame_index: This parameter indicates the unsolicited frame index that + * should contain the response. + * + * This function returns an indication of whether the response frame was handled + * successfully or not. SCI_SUCCESS Currently this value is always returned and + * indicates successful processing of the TC response. + */ +static enum sci_status +scic_sds_smp_request_await_response_frame_handler(struct scic_sds_request *sci_req, + u32 frame_index) +{ + enum sci_status status; + void *frame_header; + struct smp_resp *rsp_hdr = &sci_req->smp.rsp; + ssize_t word_cnt = SMP_RESP_HDR_SZ / sizeof(u32); + + status = scic_sds_unsolicited_frame_control_get_header( + &(scic_sds_request_get_controller(sci_req)->uf_control), + frame_index, + &frame_header); + + /* byte swap the header. */ + sci_swab32_cpy(rsp_hdr, frame_header, word_cnt); + + if (rsp_hdr->frame_type == SMP_RESPONSE) { + void *smp_resp; + + status = scic_sds_unsolicited_frame_control_get_buffer( + &(scic_sds_request_get_controller(sci_req)->uf_control), + frame_index, + &smp_resp); + + word_cnt = (sizeof(struct smp_req) - SMP_RESP_HDR_SZ) / + sizeof(u32); + + sci_swab32_cpy(((u8 *) rsp_hdr) + SMP_RESP_HDR_SZ, + smp_resp, word_cnt); + + scic_sds_request_set_status( + sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); + + sci_base_state_machine_change_state(&sci_req->state_machine, + SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION); + } else { + /* This was not a response frame why did it get forwarded? */ + dev_err(scic_to_dev(sci_req->owning_controller), + "%s: SCIC SMP Request 0x%p received unexpected frame " + "%d type 0x%02x\n", + __func__, + sci_req, + frame_index, + rsp_hdr->frame_type); + + scic_sds_request_set_status( + sci_req, + SCU_TASK_DONE_SMP_FRM_TYPE_ERR, + SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); + + sci_base_state_machine_change_state( + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); + } + + scic_sds_controller_release_frame(sci_req->owning_controller, + frame_index); + + return SCI_SUCCESS; +} + +/** + * This method processes the completions transport layer (TL) status to + * determine if the SMP request was sent successfully. If the SMP request + * was sent successfully, then the state for the SMP request transits to + * waiting for a response frame. + * @sci_req: This parameter specifies the request for which the TC + * completion was received. + * @completion_code: This parameter indicates the completion status information + * for the TC. + * + * Indicate if the tc completion handler was successful. SCI_SUCCESS currently + * this method always returns success. + */ +static enum sci_status scic_sds_smp_request_await_tc_completion_tc_completion_handler( + struct scic_sds_request *sci_req, + u32 completion_code) +{ + switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { + case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): + scic_sds_request_set_status( + sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS + ); + + sci_base_state_machine_change_state( + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); + break; + + default: + /* + * All other completion status cause the IO to be complete. If a NAK + * was received, then it is up to the user to retry the request. */ + scic_sds_request_set_status( + sci_req, + SCU_NORMALIZE_COMPLETION_STATUS(completion_code), + SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR + ); + + sci_base_state_machine_change_state( + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); + break; + } + + return SCI_SUCCESS; +} + static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = { [SCI_BASE_REQUEST_STATE_INITIAL] = { }, [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { @@ -1280,6 +1458,15 @@ static const struct scic_sds_io_request_state_handler scic_sds_request_state_han .abort_handler = scic_sds_ssp_task_request_await_tc_response_abort_handler, .frame_handler = scic_sds_ssp_task_request_await_tc_response_frame_handler, }, + [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = { + .abort_handler = scic_sds_request_started_state_abort_handler, + .tc_completion_handler = scic_sds_smp_request_await_response_tc_completion_handler, + .frame_handler = scic_sds_smp_request_await_response_frame_handler, + }, + [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = { + .abort_handler = scic_sds_request_started_state_abort_handler, + .tc_completion_handler = scic_sds_smp_request_await_tc_completion_tc_completion_handler, + }, [SCI_BASE_REQUEST_STATE_COMPLETED] = { .complete_handler = scic_sds_request_completed_state_complete_handler, }, @@ -2038,6 +2225,12 @@ static void scic_sds_request_started_state_enter(void *object) struct sci_base_state_machine *sm = &sci_req->state_machine; struct isci_request *ireq = sci_req_to_ireq(sci_req); struct domain_device *dev = sci_dev_to_domain(sci_req->target_device); + struct sas_task *task; + + /* XXX as hch said always creating an internal sas_task for tmf + * requests would simplify the driver + */ + task = ireq->ttype == io_task ? isci_request_access_task(ireq) : NULL; SET_STATE_HANDLER( sci_req, @@ -2045,15 +2238,19 @@ static void scic_sds_request_started_state_enter(void *object) SCI_BASE_REQUEST_STATE_STARTED ); - if (ireq->ttype == tmf_task && dev->dev_type == SAS_END_DEV) - sci_base_state_machine_change_state(sm, - SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION); - /* Most of the request state machines have a started substate machine so * start its execution on the entry to the started state. */ if (sci_req->has_started_substate_machine == true) sci_base_state_machine_start(&sci_req->started_substate_machine); + + if (!task && dev->dev_type == SAS_END_DEV) { + sci_base_state_machine_change_state(sm, + SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION); + } else if (task && task->task_proto == SAS_PROTOCOL_SMP) { + sci_base_state_machine_change_state(sm, + SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE); + } } /** @@ -2173,6 +2370,28 @@ static void scic_sds_io_request_started_task_mgmt_await_task_response_substate_e ); } +static void scic_sds_smp_request_started_await_response_substate_enter(void *object) +{ + struct scic_sds_request *sci_req = object; + + SET_STATE_HANDLER( + sci_req, + scic_sds_request_state_handler_table, + SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE + ); +} + +static void scic_sds_smp_request_started_await_tc_completion_substate_enter(void *object) +{ + struct scic_sds_request *sci_req = object; + + SET_STATE_HANDLER( + sci_req, + scic_sds_request_state_handler_table, + SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION + ); +} + static const struct sci_base_state scic_sds_request_state_table[] = { [SCI_BASE_REQUEST_STATE_INITIAL] = { .enter_state = scic_sds_request_initial_state_enter, @@ -2190,6 +2409,12 @@ static const struct sci_base_state scic_sds_request_state_table[] = { [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE] = { .enter_state = scic_sds_io_request_started_task_mgmt_await_task_response_substate_enter, }, + [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = { + .enter_state = scic_sds_smp_request_started_await_response_substate_enter, + }, + [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = { + .enter_state = scic_sds_smp_request_started_await_tc_completion_substate_enter, + }, [SCI_BASE_REQUEST_STATE_COMPLETED] = { .enter_state = scic_sds_request_completed_state_enter, }, @@ -2225,7 +2450,7 @@ static void scic_sds_general_request_construct(struct scic_sds_controller *scic, if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { sci_req->was_tag_assigned_by_user = false; - sci_req->task_context_buffer = NULL; + sci_req->task_context_buffer = &sci_req->tc; } else { sci_req->was_tag_assigned_by_user = true; @@ -2245,26 +2470,20 @@ scic_io_request_construct(struct scic_sds_controller *scic, /* Build the common part of the request */ scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); - if (sci_dev->rnc.remote_node_index == - SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) + if (sci_dev->rnc.remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) return SCI_FAILURE_INVALID_REMOTE_DEVICE; if (dev->dev_type == SAS_END_DEV) - scic_sds_ssp_io_request_assign_buffers(sci_req); - else if ((dev->dev_type == SATA_DEV) || - (dev->tproto & SAS_PROTOCOL_STP)) { - scic_sds_stp_request_assign_buffers(sci_req); + /* pass */; + 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)) { - scic_sds_smp_request_assign_buffers(sci_req); + else if (dev_is_expander(dev)) memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd)); - } else - status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; + else + return SCI_FAILURE_UNSUPPORTED_PROTOCOL; - if (status == SCI_SUCCESS) { - memset(sci_req->task_context_buffer, 0, - offsetof(struct scu_task_context, sgl_pair_ab)); - } + memset(sci_req->task_context_buffer, 0, + offsetof(struct scu_task_context, sgl_pair_ab)); return status; } @@ -2279,17 +2498,12 @@ enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, /* Build the common part of the request */ scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); - if (dev->dev_type == SAS_END_DEV) - scic_sds_ssp_task_request_assign_buffers(sci_req); - else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) - scic_sds_stp_request_assign_buffers(sci_req); - else - status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; - - if (status == SCI_SUCCESS) { + if (dev->dev_type == SAS_END_DEV || + dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { sci_req->is_task_management_request = true; memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context)); - } + } else + status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; return status; } @@ -2341,6 +2555,174 @@ static enum sci_status isci_request_stp_request_construct( } /* + * 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, + struct smp_req *smp_req) +{ + dma_addr_t dma_addr; + struct scic_sds_controller *scic; + 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); + + /* byte swap the smp request. */ + sci_swab32_cpy(&sci_req->smp.cmd, smp_req, + word_cnt); + + task_context = scic_sds_request_get_task_context(sci_req); + + scic = scic_sds_request_get_controller(sci_req); + sci_dev = scic_sds_request_get_device(sci_req); + sci_port = scic_sds_request_get_port(sci_req); + + /* + * Fill in the TC with the its required data + * 00h + */ + task_context->priority = 0; + task_context->initiator_request = 1; + task_context->connection_rate = sci_dev->connection_rate; + task_context->protocol_engine_index = + scic_sds_controller_get_protocol_engine_group(scic); + task_context->logical_port_index = scic_sds_port_get_index(sci_port); + task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SMP; + task_context->abort = 0; + task_context->valid = SCU_TASK_CONTEXT_VALID; + task_context->context_type = SCU_TASK_CONTEXT_TYPE; + + /* 04h */ + task_context->remote_node_index = sci_dev->rnc.remote_node_index; + task_context->command_code = 0; + task_context->task_type = SCU_TASK_TYPE_SMP_REQUEST; + + /* 08h */ + task_context->link_layer_control = 0; + task_context->do_not_dma_ssp_good_response = 1; + task_context->strict_ordering = 0; + task_context->control_frame = 1; + task_context->timeout_enable = 0; + task_context->block_guard_enable = 0; + + /* 0ch */ + task_context->address_modifier = 0; + + /* 10h */ + task_context->ssp_command_iu_length = smp_req->req_len; + + /* 14h */ + task_context->transfer_length_bytes = 0; + + /* + * 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)); + + /* + * 40h + * "For SMP you could program it to zero. We would prefer that way + * so that done code will be consistent." - Venki + */ + task_context->task_phase = 0; + + if (sci_req->was_tag_assigned_by_user) { + /* + * Build the task context now since we have already read + * the data + */ + sci_req->post_context = + (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | + (scic_sds_controller_get_protocol_engine_group(scic) << + SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | + (scic_sds_port_get_index(sci_port) << + SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) | + scic_sds_io_tag_get_index(sci_req->io_tag)); + } else { + /* + * Build the task context now since we have already read + * the data. + * I/O tag index is not assigned because we have to wait + * until we get a TCi. + */ + sci_req->post_context = + (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | + (scic_sds_controller_get_protocol_engine_group(scic) << + SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | + (scic_sds_port_get_index(sci_port) << + SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)); + } + + /* + * 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); + + /* 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 = kmalloc(sizeof(*smp_req), GFP_KERNEL); + + if (!smp_req) + return SCI_FAILURE_INSUFFICIENT_RESOURCES; + + sci_req->protocol = SCIC_SMP_PROTOCOL; + + /* Construct the SMP SCU Task Context */ + memcpy(smp_req, &sci_req->smp.cmd, sizeof(*smp_req)); + + /* + * 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); + + sci_base_state_machine_change_state(&sci_req->state_machine, + SCI_BASE_REQUEST_STATE_CONSTRUCTED); + + kfree(smp_req); + + return SCI_SUCCESS; +} + +/* * isci_smp_request_build() - This function builds the smp request. * @ireq: This parameter points to the isci_request allocated in the * request construct function. diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index b5c5b063a36..d090cb1a14d 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -88,7 +88,7 @@ enum sci_request_protocol { SCIC_SMP_PROTOCOL, SCIC_SSP_PROTOCOL, SCIC_STP_PROTOCOL -}; /* XXX remove me, use sas_task.dev instead */; +}; /* XXX remove me, use sas_task.{dev|task_proto} instead */; struct scic_sds_request { /** @@ -310,6 +310,19 @@ enum sci_base_request_states { SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE, /** + * This sub-state indicates that the started task management request + * is waiting for the reception of an unsolicited frame + * (i.e. response IU). + */ + SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE, + + /** + * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is + * waiting for the transmission of the initial frame (i.e. command, task, etc.). + */ + SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION, + + /** * This state indicates that the request has completed. * This state is entered from the STARTED state. This state is entered from * the ABORTING state. @@ -461,8 +474,6 @@ scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completi } void scic_sds_request_build_sgl(struct scic_sds_request *sci_req); -void scic_sds_stp_request_assign_buffers(struct scic_sds_request *sci_req); -void scic_sds_smp_request_assign_buffers(struct scic_sds_request *sci_req); enum sci_status scic_sds_request_start(struct scic_sds_request *sci_req); enum sci_status scic_sds_io_request_terminate(struct scic_sds_request *sci_req); enum sci_status scic_sds_io_request_event_handler(struct scic_sds_request *sci_req, @@ -473,30 +484,6 @@ enum sci_status scic_sds_task_request_terminate(struct scic_sds_request *sci_req enum sci_status scic_sds_request_started_state_abort_handler(struct scic_sds_request *sci_req); -/** - * enum _scic_sds_smp_request_started_substates - This enumeration depicts all - * of the substates for a SMP request to be performed in the STARTED - * super-state. - * - * - */ -enum scic_sds_smp_request_started_substates { - /** - * This sub-state indicates that the started task management request - * is waiting for the reception of an unsolicited frame - * (i.e. response IU). - */ - SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE, - - /** - * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is - * waiting for the transmission of the initial frame (i.e. command, task, etc.). - */ - SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION, -}; - - - /* XXX open code in caller */ static inline void *scic_request_get_virt_addr(struct scic_sds_request *sci_req, dma_addr_t phys_addr) @@ -791,7 +778,6 @@ enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, struct scic_sds_request *sci_req); enum sci_status scic_task_request_construct_ssp(struct scic_sds_request *sci_req); enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req); -enum sci_status scic_io_request_construct_smp(struct scic_sds_request *sci_req); void scic_stp_io_request_set_ncq_tag(struct scic_sds_request *sci_req, u16 ncq_tag); void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req); #endif /* !defined(_ISCI_REQUEST_H_) */ diff --git a/drivers/scsi/isci/smp_request.c b/drivers/scsi/isci/smp_request.c deleted file mode 100644 index d4750a761c5..00000000000 --- a/drivers/scsi/isci/smp_request.c +++ /dev/null @@ -1,518 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <scsi/sas.h> -#include "state_machine.h" -#include "remote_device.h" -#include "request.h" -#include "scu_completion_codes.h" -#include "scu_task_context.h" -#include "host.h" - -static void scu_smp_request_construct_task_context( - struct scic_sds_request *sci_req, - struct smp_req *smp_req); - -void scic_sds_smp_request_assign_buffers(struct scic_sds_request *sci_req) -{ - if (sci_req->was_tag_assigned_by_user == false) - sci_req->task_context_buffer = &sci_req->tc; -} - -/* - * 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, - struct smp_req *smp_req) -{ - dma_addr_t dma_addr; - struct scic_sds_controller *scic; - 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); - - /* byte swap the smp request. */ - sci_swab32_cpy(&sci_req->smp.cmd, smp_req, - word_cnt); - - task_context = scic_sds_request_get_task_context(sci_req); - - scic = scic_sds_request_get_controller(sci_req); - sci_dev = scic_sds_request_get_device(sci_req); - sci_port = scic_sds_request_get_port(sci_req); - - /* - * Fill in the TC with the its required data - * 00h - */ - task_context->priority = 0; - task_context->initiator_request = 1; - task_context->connection_rate = sci_dev->connection_rate; - task_context->protocol_engine_index = - scic_sds_controller_get_protocol_engine_group(scic); - task_context->logical_port_index = scic_sds_port_get_index(sci_port); - task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SMP; - task_context->abort = 0; - task_context->valid = SCU_TASK_CONTEXT_VALID; - task_context->context_type = SCU_TASK_CONTEXT_TYPE; - - /* 04h */ - task_context->remote_node_index = sci_dev->rnc.remote_node_index; - task_context->command_code = 0; - task_context->task_type = SCU_TASK_TYPE_SMP_REQUEST; - - /* 08h */ - task_context->link_layer_control = 0; - task_context->do_not_dma_ssp_good_response = 1; - task_context->strict_ordering = 0; - task_context->control_frame = 1; - task_context->timeout_enable = 0; - task_context->block_guard_enable = 0; - - /* 0ch */ - task_context->address_modifier = 0; - - /* 10h */ - task_context->ssp_command_iu_length = smp_req->req_len; - - /* 14h */ - task_context->transfer_length_bytes = 0; - - /* - * 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)); - - /* - * 40h - * "For SMP you could program it to zero. We would prefer that way - * so that done code will be consistent." - Venki - */ - task_context->task_phase = 0; - - if (sci_req->was_tag_assigned_by_user) { - /* - * Build the task context now since we have already read - * the data - */ - sci_req->post_context = - (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | - (scic_sds_controller_get_protocol_engine_group(scic) << - SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | - (scic_sds_port_get_index(sci_port) << - SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) | - scic_sds_io_tag_get_index(sci_req->io_tag)); - } else { - /* - * Build the task context now since we have already read - * the data. - * I/O tag index is not assigned because we have to wait - * until we get a TCi. - */ - sci_req->post_context = - (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | - (scic_sds_controller_get_protocol_engine_group(scic) << - SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | - (scic_sds_port_get_index(sci_port) << - SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)); - } - - /* - * 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); - - /* 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; -} - -/* - * This function processes an unsolicited frame while the SMP request is waiting - * for a response frame. It will copy the response data, release the - * unsolicited frame, and transition the request to the - * SCI_BASE_REQUEST_STATE_COMPLETED state. - * @sci_req: This parameter specifies the request for which the - * unsolicited frame was received. - * @frame_index: This parameter indicates the unsolicited frame index that - * should contain the response. - * - * This function returns an indication of whether the response frame was handled - * successfully or not. SCI_SUCCESS Currently this value is always returned and - * indicates successful processing of the TC response. - */ -static enum sci_status -scic_sds_smp_request_await_response_frame_handler(struct scic_sds_request *sci_req, - u32 frame_index) -{ - enum sci_status status; - void *frame_header; - struct smp_resp *rsp_hdr = &sci_req->smp.rsp; - ssize_t word_cnt = SMP_RESP_HDR_SZ / sizeof(u32); - - status = scic_sds_unsolicited_frame_control_get_header( - &(scic_sds_request_get_controller(sci_req)->uf_control), - frame_index, - &frame_header); - - /* byte swap the header. */ - sci_swab32_cpy(rsp_hdr, frame_header, word_cnt); - - if (rsp_hdr->frame_type == SMP_RESPONSE) { - void *smp_resp; - - status = scic_sds_unsolicited_frame_control_get_buffer( - &(scic_sds_request_get_controller(sci_req)->uf_control), - frame_index, - &smp_resp); - - word_cnt = (sizeof(struct smp_req) - SMP_RESP_HDR_SZ) / - sizeof(u32); - - sci_swab32_cpy(((u8 *) rsp_hdr) + SMP_RESP_HDR_SZ, - smp_resp, word_cnt); - - scic_sds_request_set_status( - sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); - - sci_base_state_machine_change_state( - &sci_req->started_substate_machine, - SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION); - } else { - /* This was not a response frame why did it get forwarded? */ - dev_err(scic_to_dev(sci_req->owning_controller), - "%s: SCIC SMP Request 0x%p received unexpected frame " - "%d type 0x%02x\n", - __func__, - sci_req, - frame_index, - rsp_hdr->frame_type); - - scic_sds_request_set_status( - sci_req, - SCU_TASK_DONE_SMP_FRM_TYPE_ERR, - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); - - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - } - - scic_sds_controller_release_frame(sci_req->owning_controller, - frame_index); - - return SCI_SUCCESS; -} - - -/** - * This method processes an abnormal TC completion while the SMP request is - * waiting for a response frame. It decides what happened to the IO based - * on TC completion status. - * @sci_req: This parameter specifies the request for which the TC - * completion was received. - * @completion_code: This parameter indicates the completion status information - * for the TC. - * - * Indicate if the tc completion handler was successful. SCI_SUCCESS currently - * this method always returns success. - */ -static enum sci_status scic_sds_smp_request_await_response_tc_completion_handler( - struct scic_sds_request *sci_req, - u32 completion_code) -{ - switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): - /* - * In the AWAIT RESPONSE state, any TC completion is unexpected. - * but if the TC has success status, we complete the IO anyway. */ - scic_sds_request_set_status( - sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS - ); - - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - break; - - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR): - /* - * These status has been seen in a specific LSI expander, which sometimes - * is not able to send smp response within 2 ms. This causes our hardware - * break the connection and set TC completion with one of these SMP_XXX_XX_ERR - * status. For these type of error, we ask scic user to retry the request. */ - scic_sds_request_set_status( - sci_req, SCU_TASK_DONE_SMP_RESP_TO_ERR, SCI_FAILURE_RETRY_REQUIRED - ); - - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - break; - - default: - /* - * All other completion status cause the IO to be complete. If a NAK - * was received, then it is up to the user to retry the request. */ - scic_sds_request_set_status( - sci_req, - SCU_NORMALIZE_COMPLETION_STATUS(completion_code), - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR - ); - - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - break; - } - - return SCI_SUCCESS; -} - - -/** - * This method processes the completions transport layer (TL) status to - * determine if the SMP request was sent successfully. If the SMP request - * was sent successfully, then the state for the SMP request transits to - * waiting for a response frame. - * @sci_req: This parameter specifies the request for which the TC - * completion was received. - * @completion_code: This parameter indicates the completion status information - * for the TC. - * - * Indicate if the tc completion handler was successful. SCI_SUCCESS currently - * this method always returns success. - */ -static enum sci_status scic_sds_smp_request_await_tc_completion_tc_completion_handler( - struct scic_sds_request *sci_req, - u32 completion_code) -{ - switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): - scic_sds_request_set_status( - sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS - ); - - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - break; - - default: - /* - * All other completion status cause the IO to be complete. If a NAK - * was received, then it is up to the user to retry the request. */ - scic_sds_request_set_status( - sci_req, - SCU_NORMALIZE_COMPLETION_STATUS(completion_code), - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR - ); - - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - break; - } - - return SCI_SUCCESS; -} - - -static const struct scic_sds_io_request_state_handler scic_sds_smp_request_started_substate_handler_table[] = { - [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = { - .abort_handler = scic_sds_request_started_state_abort_handler, - .tc_completion_handler = scic_sds_smp_request_await_response_tc_completion_handler, - .frame_handler = scic_sds_smp_request_await_response_frame_handler, - }, - [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = { - .abort_handler = scic_sds_request_started_state_abort_handler, - .tc_completion_handler = scic_sds_smp_request_await_tc_completion_tc_completion_handler, - } -}; - -/** - * This method performs the actions required when entering the - * SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_RESPONSE sub-state. This - * includes setting the IO request state handlers for this sub-state. - * @object: This parameter specifies the request object for which the sub-state - * change is occurring. - * - * none. - */ -static void scic_sds_smp_request_started_await_response_substate_enter( - void *object) -{ - struct scic_sds_request *sci_req = object; - - SET_STATE_HANDLER( - sci_req, - scic_sds_smp_request_started_substate_handler_table, - SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE - ); -} - -/** - * This method performs the actions required when entering the - * SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION sub-state. - * This includes setting the SMP request state handlers for this sub-state. - * @object: This parameter specifies the request object for which the sub-state - * change is occurring. - * - * none. - */ -static void scic_sds_smp_request_started_await_tc_completion_substate_enter( - void *object) -{ - struct scic_sds_request *sci_req = object; - - SET_STATE_HANDLER( - sci_req, - scic_sds_smp_request_started_substate_handler_table, - SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION - ); -} - -static const struct sci_base_state scic_sds_smp_request_started_substate_table[] = { - [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = { - .enter_state = scic_sds_smp_request_started_await_response_substate_enter, - }, - [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = { - .enter_state = scic_sds_smp_request_started_await_tc_completion_substate_enter, - }, -}; - -/** - * This method is called by the SCI user to build an SMP IO request. - * - * - The user must have previously called scic_io_request_construct() on the - * supplied IO request. Indicate if the controller successfully built the IO - * request. SCI_SUCCESS This value is returned if the IO request was - * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned - * if the remote_device does not support the SMP protocol. - * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not - * properly set the association between the SCIC IO request and the user's IO - * request. - */ -enum sci_status scic_io_request_construct_smp(struct scic_sds_request *sci_req) -{ - struct smp_req *smp_req = kmalloc(sizeof(*smp_req), GFP_KERNEL); - - if (!smp_req) - return SCI_FAILURE_INSUFFICIENT_RESOURCES; - - sci_req->protocol = SCIC_SMP_PROTOCOL; - sci_req->has_started_substate_machine = true; - - /* Construct the started sub-state machine. */ - sci_base_state_machine_construct( - &sci_req->started_substate_machine, - sci_req, - scic_sds_smp_request_started_substate_table, - SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE - ); - - /* Construct the SMP SCU Task Context */ - memcpy(smp_req, &sci_req->smp.cmd, sizeof(*smp_req)); - - /* - * 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); - - sci_base_state_machine_change_state(&sci_req->state_machine, - SCI_BASE_REQUEST_STATE_CONSTRUCTED); - - kfree(smp_req); - - return SCI_SUCCESS; -} diff --git a/drivers/scsi/isci/stp_request.c b/drivers/scsi/isci/stp_request.c index 298086afa5a..e94ece81ed9 100644 --- a/drivers/scsi/isci/stp_request.c +++ b/drivers/scsi/isci/stp_request.c @@ -64,12 +64,6 @@ #include "scu_task_context.h" #include "request.h" -void scic_sds_stp_request_assign_buffers(struct scic_sds_request *sci_req) -{ - if (sci_req->was_tag_assigned_by_user == false) - sci_req->task_context_buffer = &sci_req->tc; -} - /** * This method is will fill in the SCU Task Context for any type of SATA * request. This is called from the various SATA constructors. |