remote_node_table.o \
unsolicited_frame_control.o \
stp_request.o \
- smp_request.o \
port_config.o \
}
}
-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;
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 ==
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] = {
.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,
},
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,
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);
+ }
}
/**
);
}
+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,
[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,
},
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;
/* 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;
}
/* 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;
}
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,
+ 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
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 {
/**
*/
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
}
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,
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)
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_) */
+++ /dev/null
-/*
- * 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;
-}
#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.
projects / firefly-linux-kernel-4.4.55.git / commitdiff