#include "request.h"
#include "sata.h"
#include "scu_completion_codes.h"
+#include "scu_event_codes.h"
#include "sas.h"
-/**
- * This method returns the sgl element pair for the specificed sgl_pair index.
- * @sci_req: This parameter specifies the IO request for which to retrieve
- * the Scatter-Gather List element pair.
- * @sgl_pair_index: This parameter specifies the index into the SGL element
- * pair to be retrieved.
- *
- * This method returns a pointer to an struct scu_sgl_element_pair.
- */
-static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair(
- struct scic_sds_request *sci_req,
- u32 sgl_pair_index
- ) {
- struct scu_task_context *task_context;
-
- task_context = (struct scu_task_context *)sci_req->task_context_buffer;
+static struct scu_sgl_element_pair *to_sgl_element_pair(struct scic_sds_request *sci_req,
+ int idx)
+{
+ if (idx == 0)
+ return &sci_req->tc->sgl_pair_ab;
+ else if (idx == 1)
+ return &sci_req->tc->sgl_pair_cd;
+ else if (idx < 0)
+ return NULL;
+ else
+ return &sci_req->sg_table[idx - 2];
+}
- if (sgl_pair_index == 0) {
- return &task_context->sgl_pair_ab;
- } else if (sgl_pair_index == 1) {
- return &task_context->sgl_pair_cd;
+static dma_addr_t to_sgl_element_pair_dma(struct scic_sds_controller *scic,
+ struct scic_sds_request *sci_req, u32 idx)
+{
+ u32 offset;
+
+ if (idx == 0) {
+ offset = (void *) &sci_req->tc->sgl_pair_ab -
+ (void *) &scic->task_context_table[0];
+ return scic->task_context_dma + offset;
+ } else if (idx == 1) {
+ offset = (void *) &sci_req->tc->sgl_pair_cd -
+ (void *) &scic->task_context_table[0];
+ return scic->task_context_dma + offset;
}
- return &sci_req->sg_table[sgl_pair_index - 2];
+ return scic_io_request_get_dma_addr(sci_req, &sci_req->sg_table[idx - 2]);
}
-/**
- * This function will build the SGL list for an IO request.
- * @sci_req: This parameter specifies the IO request for which to build
- * the Scatter-Gather List.
- *
- */
-void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
+static void init_sgl_element(struct scu_sgl_element *e, struct scatterlist *sg)
+{
+ e->length = sg_dma_len(sg);
+ e->address_upper = upper_32_bits(sg_dma_address(sg));
+ e->address_lower = lower_32_bits(sg_dma_address(sg));
+ e->address_modifier = 0;
+}
+
+static void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
{
struct isci_request *isci_request = sci_req_to_ireq(sds_request);
struct isci_host *isci_host = isci_request->isci_host;
+ struct scic_sds_controller *scic = &isci_host->sci;
struct sas_task *task = isci_request_access_task(isci_request);
struct scatterlist *sg = NULL;
dma_addr_t dma_addr;
sg = task->scatter;
while (sg) {
- scu_sg = scic_sds_request_get_sgl_element_pair(
- sds_request,
- sg_idx);
-
- SCU_SGL_COPY(scu_sg->A, sg);
-
+ scu_sg = to_sgl_element_pair(sds_request, sg_idx);
+ init_sgl_element(&scu_sg->A, sg);
sg = sg_next(sg);
-
if (sg) {
- SCU_SGL_COPY(scu_sg->B, sg);
+ init_sgl_element(&scu_sg->B, sg);
sg = sg_next(sg);
} else
- SCU_SGL_ZERO(scu_sg->B);
+ memset(&scu_sg->B, 0, sizeof(scu_sg->B));
if (prev_sg) {
- dma_addr =
- scic_io_request_get_dma_addr(
- sds_request,
- scu_sg);
+ dma_addr = to_sgl_element_pair_dma(scic,
+ sds_request,
+ sg_idx);
prev_sg->next_pair_upper =
upper_32_bits(dma_addr);
sg_idx++;
}
} else { /* handle when no sg */
- scu_sg = scic_sds_request_get_sgl_element_pair(sds_request,
- sg_idx);
+ scu_sg = to_sgl_element_pair(sds_request, sg_idx);
dma_addr = dma_map_single(&isci_host->pdev->dev,
task->scatter,
struct scu_task_context *task_context)
{
dma_addr_t dma_addr;
- struct scic_sds_controller *controller;
struct scic_sds_remote_device *target_device;
struct scic_sds_port *target_port;
- controller = scic_sds_request_get_controller(sds_request);
target_device = scic_sds_request_get_device(sds_request);
target_port = scic_sds_request_get_port(sds_request);
/* task_context->type.ssp.tag = sci_req->io_tag; */
task_context->task_phase = 0x01;
- if (sds_request->was_tag_assigned_by_user) {
- /*
- * Build the task context now since we have already read
- * the data
- */
- sds_request->post_context =
- (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- (scic_sds_controller_get_protocol_engine_group(
- controller) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(target_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
- scic_sds_io_tag_get_index(sds_request->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
- */
- sds_request->post_context =
- (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
- (scic_sds_controller_get_protocol_engine_group(
- owning_controller) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(target_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
- }
+ sds_request->post_context = (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ (scic_sds_controller_get_protocol_engine_group(controller) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(target_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+ ISCI_TAG_TCI(sds_request->io_tag));
/*
* Copy the physical address for the command buffer to the
* @sci_req:
*
*/
-static void scu_ssp_io_request_construct_task_context(
- struct scic_sds_request *sci_req,
- enum dma_data_direction dir,
- u32 len)
+static void scu_ssp_io_request_construct_task_context(struct scic_sds_request *sci_req,
+ enum dma_data_direction dir,
+ u32 len)
{
- struct scu_task_context *task_context;
-
- task_context = scic_sds_request_get_task_context(sci_req);
+ struct scu_task_context *task_context = sci_req->tc;
scu_ssp_reqeust_construct_task_context(sci_req, task_context);
* constructed.
*
*/
-static void scu_ssp_task_request_construct_task_context(
- struct scic_sds_request *sci_req)
+static void scu_ssp_task_request_construct_task_context(struct scic_sds_request *sci_req)
{
- struct scu_task_context *task_context;
-
- task_context = scic_sds_request_get_task_context(sci_req);
+ struct scu_task_context *task_context = sci_req->tc;
scu_ssp_reqeust_construct_task_context(sci_req, task_context);
sizeof(struct ssp_task_iu) / sizeof(u32);
}
-
/**
- * This method constructs the SSP Command IU data for this ssp passthrough
- * comand request object.
- * @sci_req: This parameter specifies the request object for which the SSP
- * command information unit is being built.
+ * This method is will fill in the SCU Task Context for any type of SATA
+ * request. This is called from the various SATA constructors.
+ * @sci_req: The general IO request object which is to be used in
+ * constructing the SCU task context.
+ * @task_context: The buffer pointer for the SCU task context which is being
+ * constructed.
*
- * enum sci_status, returns invalid parameter is cdb > 16
+ * The general io request construction is complete. The buffer assignment for
+ * the command buffer is complete. none Revisit task context construction to
+ * determine what is common for SSP/SMP/STP task context structures.
*/
+static void scu_sata_reqeust_construct_task_context(
+ struct scic_sds_request *sci_req,
+ struct scu_task_context *task_context)
+{
+ dma_addr_t dma_addr;
+ struct scic_sds_remote_device *target_device;
+ struct scic_sds_port *target_port;
+
+ target_device = scic_sds_request_get_device(sci_req);
+ target_port = scic_sds_request_get_port(sci_req);
+
+ /* Fill in the TC with the its required data */
+ task_context->abort = 0;
+ task_context->priority = SCU_TASK_PRIORITY_NORMAL;
+ task_context->initiator_request = 1;
+ task_context->connection_rate = target_device->connection_rate;
+ task_context->protocol_engine_index =
+ scic_sds_controller_get_protocol_engine_group(controller);
+ task_context->logical_port_index =
+ scic_sds_port_get_index(target_port);
+ task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_STP;
+ task_context->valid = SCU_TASK_CONTEXT_VALID;
+ task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+ task_context->remote_node_index =
+ scic_sds_remote_device_get_index(sci_req->target_device);
+ task_context->command_code = 0;
+
+ task_context->link_layer_control = 0;
+ task_context->do_not_dma_ssp_good_response = 1;
+ task_context->strict_ordering = 0;
+ task_context->control_frame = 0;
+ task_context->timeout_enable = 0;
+ task_context->block_guard_enable = 0;
+
+ task_context->address_modifier = 0;
+ task_context->task_phase = 0x01;
+
+ task_context->ssp_command_iu_length =
+ (sizeof(struct host_to_dev_fis) - sizeof(u32)) / sizeof(u32);
+
+ /* Set the first word of the H2D REG FIS */
+ task_context->type.words[0] = *(u32 *)&sci_req->stp.cmd;
+
+ sci_req->post_context = (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+ (scic_sds_controller_get_protocol_engine_group(controller) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(target_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+ ISCI_TAG_TCI(sci_req->io_tag));
+ /*
+ * Copy the physical address for the command buffer to the SCU Task
+ * Context. We must offset the command buffer by 4 bytes because the
+ * first 4 bytes are transfered in the body of the TC.
+ */
+ dma_addr = scic_io_request_get_dma_addr(sci_req,
+ ((char *) &sci_req->stp.cmd) +
+ sizeof(u32));
+
+ task_context->command_iu_upper = upper_32_bits(dma_addr);
+ task_context->command_iu_lower = lower_32_bits(dma_addr);
+
+ /* SATA Requests do not have a response buffer */
+ task_context->response_iu_upper = 0;
+ task_context->response_iu_lower = 0;
+}
+
+static void scu_stp_raw_request_construct_task_context(struct scic_sds_request *sci_req)
+{
+ struct scu_task_context *task_context = sci_req->tc;
+
+ scu_sata_reqeust_construct_task_context(sci_req, task_context);
+
+ task_context->control_frame = 0;
+ task_context->priority = SCU_TASK_PRIORITY_NORMAL;
+ task_context->task_type = SCU_TASK_TYPE_SATA_RAW_FRAME;
+ task_context->type.stp.fis_type = FIS_REGH2D;
+ task_context->transfer_length_bytes = sizeof(struct host_to_dev_fis) - sizeof(u32);
+}
+
+static enum sci_status
+scic_sds_stp_pio_request_construct(struct scic_sds_request *sci_req,
+ bool copy_rx_frame)
+{
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scic_sds_stp_pio_request *pio = &stp_req->type.pio;
+
+ scu_stp_raw_request_construct_task_context(sci_req);
+
+ pio->current_transfer_bytes = 0;
+ pio->ending_error = 0;
+ pio->ending_status = 0;
+
+ pio->request_current.sgl_offset = 0;
+ pio->request_current.sgl_set = SCU_SGL_ELEMENT_PAIR_A;
+
+ if (copy_rx_frame) {
+ scic_sds_request_build_sgl(sci_req);
+ pio->request_current.sgl_index = 0;
+ } else {
+ /* The user does not want the data copied to the SGL buffer location */
+ pio->request_current.sgl_index = -1;
+ }
+ return SCI_SUCCESS;
+}
/**
- * This method constructs the SATA request object.
- * @sci_req:
- * @sat_protocol:
- * @transfer_length:
- * @data_direction:
- * @copy_rx_frame:
*
- * enum sci_status
+ * @sci_req: This parameter specifies the request to be constructed as an
+ * optimized request.
+ * @optimized_task_type: This parameter specifies whether the request is to be
+ * an UDMA request or a NCQ request. - A value of 0 indicates UDMA. - A
+ * value of 1 indicates NCQ.
+ *
+ * This method will perform request construction common to all types of STP
+ * requests that are optimized by the silicon (i.e. UDMA, NCQ). This method
+ * returns an indication as to whether the construction was successful.
*/
+static void scic_sds_stp_optimized_request_construct(struct scic_sds_request *sci_req,
+ u8 optimized_task_type,
+ u32 len,
+ enum dma_data_direction dir)
+{
+ struct scu_task_context *task_context = sci_req->tc;
+
+ /* Build the STP task context structure */
+ scu_sata_reqeust_construct_task_context(sci_req, task_context);
+
+ /* Copy over the SGL elements */
+ scic_sds_request_build_sgl(sci_req);
+
+ /* Copy over the number of bytes to be transfered */
+ task_context->transfer_length_bytes = len;
+
+ if (dir == DMA_TO_DEVICE) {
+ /*
+ * The difference between the DMA IN and DMA OUT request task type
+ * values are consistent with the difference between FPDMA READ
+ * and FPDMA WRITE values. Add the supplied task type parameter
+ * to this difference to set the task type properly for this
+ * DATA OUT (WRITE) case. */
+ task_context->task_type = optimized_task_type + (SCU_TASK_TYPE_DMA_OUT
+ - SCU_TASK_TYPE_DMA_IN);
+ } else {
+ /*
+ * For the DATA IN (READ) case, simply save the supplied
+ * optimized task type. */
+ task_context->task_type = optimized_task_type;
+ }
+}
+
+
+
static enum sci_status
scic_io_request_construct_sata(struct scic_sds_request *sci_req,
u32 len,
struct isci_tmf *tmf = isci_request_access_tmf(ireq);
if (tmf->tmf_code == isci_tmf_sata_srst_high ||
- tmf->tmf_code == isci_tmf_sata_srst_low)
- return scic_sds_stp_soft_reset_request_construct(sci_req);
- else {
+ tmf->tmf_code == isci_tmf_sata_srst_low) {
+ scu_stp_raw_request_construct_task_context(sci_req);
+ return SCI_SUCCESS;
+ } else {
dev_err(scic_to_dev(sci_req->owning_controller),
"%s: Request 0x%p received un-handled SAT "
"management protocol 0x%x.\n",
}
/* non data */
- if (task->data_dir == DMA_NONE)
- return scic_sds_stp_non_data_request_construct(sci_req);
+ if (task->data_dir == DMA_NONE) {
+ scu_stp_raw_request_construct_task_context(sci_req);
+ return SCI_SUCCESS;
+ }
/* NCQ */
- if (task->ata_task.use_ncq)
- return scic_sds_stp_ncq_request_construct(sci_req, len, dir);
+ if (task->ata_task.use_ncq) {
+ scic_sds_stp_optimized_request_construct(sci_req,
+ SCU_TASK_TYPE_FPDMAQ_READ,
+ len, dir);
+ return SCI_SUCCESS;
+ }
/* DMA */
- if (task->ata_task.dma_xfer)
- return scic_sds_stp_udma_request_construct(sci_req, len, dir);
- else /* PIO */
+ if (task->ata_task.dma_xfer) {
+ scic_sds_stp_optimized_request_construct(sci_req,
+ SCU_TASK_TYPE_DMA_IN,
+ len, dir);
+ return SCI_SUCCESS;
+ } else /* PIO */
return scic_sds_stp_pio_request_construct(sci_req, copy);
return status;
scic_sds_io_request_build_ssp_command_iu(sci_req);
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+ sci_change_state(&sci_req->sm, SCI_REQ_CONSTRUCTED);
return SCI_SUCCESS;
}
/* Fill in the SSP Task IU */
scic_sds_task_request_build_ssp_task_iu(sci_req);
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+ sci_change_state(&sci_req->sm, SCI_REQ_CONSTRUCTED);
return SCI_SUCCESS;
}
-
static enum sci_status scic_io_request_construct_basic_sata(struct scic_sds_request *sci_req)
{
enum sci_status status;
- struct scic_sds_stp_request *stp_req;
bool copy = false;
struct isci_request *isci_request = sci_req_to_ireq(sci_req);
struct sas_task *task = isci_request_access_task(isci_request);
- stp_req = &sci_req->stp.req;
sci_req->protocol = SCIC_STP_PROTOCOL;
copy = (task->data_dir == DMA_NONE) ? false : true;
copy);
if (status == SCI_SUCCESS)
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+ sci_change_state(&sci_req->sm, SCI_REQ_CONSTRUCTED);
return status;
}
-
enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req)
{
enum sci_status status = SCI_SUCCESS;
if (tmf->tmf_code == isci_tmf_sata_srst_high ||
tmf->tmf_code == isci_tmf_sata_srst_low) {
- status = scic_sds_stp_soft_reset_request_construct(sci_req);
+ scu_stp_raw_request_construct_task_context(sci_req);
} else {
dev_err(scic_to_dev(sci_req->owning_controller),
"%s: Request 0x%p received un-handled SAT "
}
}
- if (status == SCI_SUCCESS)
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+ if (status != SCI_SUCCESS)
+ return status;
+ sci_change_state(&sci_req->sm, SCI_REQ_CONSTRUCTED);
return status;
}
*/
ret_val = readl(scu_reg_base +
(SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) +
- ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(sci_req->io_tag)));
+ ((sizeof(struct scu_task_context)) * ISCI_TAG_TCI(sci_req->io_tag)));
}
return ret_val;
}
-enum sci_status
-scic_sds_request_start(struct scic_sds_request *request)
+enum sci_status scic_sds_request_start(struct scic_sds_request *sci_req)
{
- if (request->device_sequence !=
- scic_sds_remote_device_get_sequence(request->target_device))
- return SCI_FAILURE;
+ enum sci_base_request_states state;
+ struct scu_task_context *tc = sci_req->tc;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
- if (request->state_handlers->start_handler)
- return request->state_handlers->start_handler(request);
+ state = sci_req->sm.current_state_id;
+ if (state != SCI_REQ_CONSTRUCTED) {
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC IO Request requested to start while in wrong "
+ "state %d\n", __func__, state);
+ return SCI_FAILURE_INVALID_STATE;
+ }
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request requested to start while in wrong "
- "state %d\n",
- __func__,
- sci_base_state_machine_get_state(&request->state_machine));
+ tc->task_index = ISCI_TAG_TCI(sci_req->io_tag);
- return SCI_FAILURE_INVALID_STATE;
+ switch (tc->protocol_type) {
+ case SCU_TASK_CONTEXT_PROTOCOL_SMP:
+ case SCU_TASK_CONTEXT_PROTOCOL_SSP:
+ /* SSP/SMP Frame */
+ tc->type.ssp.tag = sci_req->io_tag;
+ tc->type.ssp.target_port_transfer_tag = 0xFFFF;
+ break;
+
+ case SCU_TASK_CONTEXT_PROTOCOL_STP:
+ /* STP/SATA Frame
+ * tc->type.stp.ncq_tag = sci_req->ncq_tag;
+ */
+ break;
+
+ case SCU_TASK_CONTEXT_PROTOCOL_NONE:
+ /* / @todo When do we set no protocol type? */
+ break;
+
+ default:
+ /* This should never happen since we build the IO
+ * requests */
+ break;
+ }
+
+ /* Add to the post_context the io tag value */
+ sci_req->post_context |= ISCI_TAG_TCI(sci_req->io_tag);
+
+ /* Everything is good go ahead and change state */
+ sci_change_state(&sci_req->sm, SCI_REQ_STARTED);
+
+ return SCI_SUCCESS;
}
enum sci_status
-scic_sds_io_request_terminate(struct scic_sds_request *request)
+scic_sds_io_request_terminate(struct scic_sds_request *sci_req)
{
- if (request->state_handlers->abort_handler)
- return request->state_handlers->abort_handler(request);
+ enum sci_base_request_states state;
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request requested to abort while in wrong "
- "state %d\n",
- __func__,
- sci_base_state_machine_get_state(&request->state_machine));
+ state = sci_req->sm.current_state_id;
+
+ switch (state) {
+ case SCI_REQ_CONSTRUCTED:
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_TASK_ABORT,
+ SCI_FAILURE_IO_TERMINATED);
+
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ return SCI_SUCCESS;
+ case SCI_REQ_STARTED:
+ case SCI_REQ_TASK_WAIT_TC_COMP:
+ case SCI_REQ_SMP_WAIT_RESP:
+ case SCI_REQ_SMP_WAIT_TC_COMP:
+ case SCI_REQ_STP_UDMA_WAIT_TC_COMP:
+ case SCI_REQ_STP_UDMA_WAIT_D2H:
+ case SCI_REQ_STP_NON_DATA_WAIT_H2D:
+ case SCI_REQ_STP_NON_DATA_WAIT_D2H:
+ case SCI_REQ_STP_PIO_WAIT_H2D:
+ case SCI_REQ_STP_PIO_WAIT_FRAME:
+ case SCI_REQ_STP_PIO_DATA_IN:
+ case SCI_REQ_STP_PIO_DATA_OUT:
+ case SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED:
+ case SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG:
+ case SCI_REQ_STP_SOFT_RESET_WAIT_D2H:
+ sci_change_state(&sci_req->sm, SCI_REQ_ABORTING);
+ return SCI_SUCCESS;
+ case SCI_REQ_TASK_WAIT_TC_RESP:
+ sci_change_state(&sci_req->sm, SCI_REQ_ABORTING);
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ return SCI_SUCCESS;
+ case SCI_REQ_ABORTING:
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ return SCI_SUCCESS;
+ case SCI_REQ_COMPLETED:
+ default:
+ dev_warn(scic_to_dev(sci_req->owning_controller),
+ "%s: SCIC IO Request requested to abort while in wrong "
+ "state %d\n",
+ __func__,
+ sci_req->sm.current_state_id);
+ break;
+ }
return SCI_FAILURE_INVALID_STATE;
}
-enum sci_status scic_sds_io_request_event_handler(
- struct scic_sds_request *request,
- u32 event_code)
+enum sci_status scic_sds_request_complete(struct scic_sds_request *sci_req)
{
- if (request->state_handlers->event_handler)
- return request->state_handlers->event_handler(request, event_code);
+ enum sci_base_request_states state;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request given event code notification %x while "
- "in wrong state %d\n",
- __func__,
- event_code,
- sci_base_state_machine_get_state(&request->state_machine));
+ state = sci_req->sm.current_state_id;
+ if (WARN_ONCE(state != SCI_REQ_COMPLETED,
+ "isci: request completion from wrong state (%d)\n", state))
+ return SCI_FAILURE_INVALID_STATE;
- return SCI_FAILURE_INVALID_STATE;
+ if (sci_req->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX)
+ scic_sds_controller_release_frame(scic,
+ sci_req->saved_rx_frame_index);
+
+ /* XXX can we just stop the machine and remove the 'final' state? */
+ sci_change_state(&sci_req->sm, SCI_REQ_FINAL);
+ return SCI_SUCCESS;
}
-/**
- *
- * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start
- * operation is to be executed.
- * @frame_index: The frame index returned by the hardware for the reqeust
- * object.
- *
- * This method invokes the core state frame handler for the
- * SCIC_SDS_IO_REQUEST_T object. enum sci_status
- */
-enum sci_status scic_sds_io_request_frame_handler(
- struct scic_sds_request *request,
- u32 frame_index)
+enum sci_status scic_sds_io_request_event_handler(struct scic_sds_request *sci_req,
+ u32 event_code)
{
- if (request->state_handlers->frame_handler)
- return request->state_handlers->frame_handler(request, frame_index);
+ enum sci_base_request_states state;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request given unexpected frame %x while in "
- "state %d\n",
- __func__,
- frame_index,
- sci_base_state_machine_get_state(&request->state_machine));
+ state = sci_req->sm.current_state_id;
- scic_sds_controller_release_frame(request->owning_controller, frame_index);
- return SCI_FAILURE_INVALID_STATE;
+ if (state != SCI_REQ_STP_PIO_DATA_IN) {
+ dev_warn(scic_to_dev(scic), "%s: (%x) in wrong state %d\n",
+ __func__, event_code, state);
+
+ return SCI_FAILURE_INVALID_STATE;
+ }
+
+ switch (scu_get_event_specifier(event_code)) {
+ case SCU_TASK_DONE_CRC_ERR << SCU_EVENT_SPECIFIC_CODE_SHIFT:
+ /* We are waiting for data and the SCU has R_ERR the data frame.
+ * Go back to waiting for the D2H Register FIS
+ */
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+ return SCI_SUCCESS;
+ default:
+ dev_err(scic_to_dev(scic),
+ "%s: pio request unexpected event %#x\n",
+ __func__, event_code);
+
+ /* TODO Should we fail the PIO request when we get an
+ * unexpected event?
+ */
+ return SCI_FAILURE;
+ }
}
/*
memcpy(resp_buf, ssp_response->resp_data, len);
}
-/*
- * This method implements the action taken when a constructed
- * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request.
- * This method will, if necessary, allocate a TCi for the io request object and
- * then will, if necessary, copy the constructed TC data into the actual TC
- * buffer. If everything is successful the post context field is updated with
- * the TCi so the controller can post the request to the hardware. enum sci_status
- * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES
- */
-static enum sci_status scic_sds_request_constructed_state_start_handler(
- struct scic_sds_request *request)
-{
- struct scu_task_context *task_context;
-
- if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
- request->io_tag =
- scic_controller_allocate_io_tag(request->owning_controller);
- }
-
- /* Record the IO Tag in the request */
- if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) {
- task_context = request->task_context_buffer;
-
- task_context->task_index = scic_sds_io_tag_get_index(request->io_tag);
-
- switch (task_context->protocol_type) {
- case SCU_TASK_CONTEXT_PROTOCOL_SMP:
- case SCU_TASK_CONTEXT_PROTOCOL_SSP:
- /* SSP/SMP Frame */
- task_context->type.ssp.tag = request->io_tag;
- task_context->type.ssp.target_port_transfer_tag = 0xFFFF;
- break;
-
- case SCU_TASK_CONTEXT_PROTOCOL_STP:
- /*
- * STP/SATA Frame
- * task_context->type.stp.ncq_tag = request->ncq_tag; */
- break;
-
- case SCU_TASK_CONTEXT_PROTOCOL_NONE:
- /* / @todo When do we set no protocol type? */
- break;
-
- default:
- /* This should never happen since we build the IO requests */
- break;
- }
-
- /*
- * Check to see if we need to copy the task context buffer
- * or have been building into the task context buffer */
- if (request->was_tag_assigned_by_user == false) {
- scic_sds_controller_copy_task_context(
- request->owning_controller, request);
- }
-
- /* Add to the post_context the io tag value */
- request->post_context |= scic_sds_io_tag_get_index(request->io_tag);
-
- /* Everything is good go ahead and change state */
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_STARTED);
-
- return SCI_SUCCESS;
- }
-
- return SCI_FAILURE_INSUFFICIENT_RESOURCES;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. Since the request
- * has not yet been posted to the hardware the request transitions to the
- * completed state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_constructed_state_abort_handler(
- struct scic_sds_request *request)
-{
- /*
- * This request has been terminated by the user make sure that the correct
- * status code is returned */
- scic_sds_request_set_status(request,
- SCU_TASK_DONE_TASK_ABORT,
- SCI_FAILURE_IO_TERMINATED);
-
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- return SCI_SUCCESS;
-}
-
-/*
- * *****************************************************************************
- * * STARTED STATE HANDLERS
- * ***************************************************************************** */
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. Since the request
- * has been posted to the hardware the io request state is changed to the
- * aborting state. enum sci_status SCI_SUCCESS
- */
-enum sci_status scic_sds_request_started_state_abort_handler(
- struct scic_sds_request *request)
-{
- if (request->has_started_substate_machine)
- sci_base_state_machine_stop(&request->started_substate_machine);
-
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_ABORTING);
- return SCI_SUCCESS;
-}
-
-/*
- * scic_sds_request_started_state_tc_completion_handler() - This method process
- * TC (task context) completions for normal IO request (i.e. Task/Abort
- * Completions of type 0). This method will update the
- * SCIC_SDS_IO_REQUEST_T::status field.
- * @sci_req: This parameter specifies the request for which a completion
- * occurred.
- * @completion_code: This parameter specifies the completion code received from
- * the SCU.
- *
- */
static enum sci_status
-scic_sds_request_started_state_tc_completion_handler(struct scic_sds_request *sci_req,
- u32 completion_code)
+request_started_state_tc_event(struct scic_sds_request *sci_req,
+ u32 completion_code)
{
- u8 datapres;
struct ssp_response_iu *resp_iu;
+ u8 datapres;
- /*
- * TODO: Any SDMA return code of other than 0 is bad
- * decode 0x003C0000 to determine SDMA status
+ /* TODO: Any SDMA return code of other than 0 is bad decode 0x003C0000
+ * to determine SDMA status
*/
switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
SCU_TASK_DONE_GOOD,
SCI_SUCCESS);
break;
-
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP):
- {
- /*
- * There are times when the SCU hardware will return an early
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP): {
+ /* There are times when the SCU hardware will return an early
* response because the io request specified more data than is
* returned by the target device (mode pages, inquiry data,
* etc.). We must check the response stats to see if this is
word_cnt);
if (resp->status == 0) {
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_GOOD,
- SCI_SUCCESS_IO_DONE_EARLY);
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_SUCCESS_IO_DONE_EARLY);
} else {
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
}
+ break;
}
- break;
-
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE):
- {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE): {
ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
sci_swab32_cpy(&sci_req->ssp.rsp,
}
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR):
- /*
- * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame
+ /* TODO With TASK_DONE_RESP_LEN_ERR is the response frame
* guaranteed to be received before this completion status is
* posted?
*/
resp_iu = &sci_req->ssp.rsp;
datapres = resp_iu->datapres;
- if ((datapres == 0x01) || (datapres == 0x02)) {
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_IO_RESPONSE_VALID);
+ if (datapres == 1 || datapres == 2) {
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
} else
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_SUCCESS);
break;
-
/* only stp device gets suspended. */
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
if (sci_req->protocol == SCIC_STP_PROTOCOL) {
- scic_sds_request_set_status(
- sci_req,
+ scic_sds_request_set_status(sci_req,
SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
SCU_COMPLETION_TL_STATUS_SHIFT,
SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
} else {
- scic_sds_request_set_status(
- sci_req,
+ scic_sds_request_set_status(sci_req,
SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
SCU_COMPLETION_TL_STATUS_SHIFT,
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED):
- scic_sds_request_set_status(
- sci_req,
- SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
- SCU_COMPLETION_TL_STATUS_SHIFT,
- SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
+ scic_sds_request_set_status(sci_req,
+ SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+ SCU_COMPLETION_TL_STATUS_SHIFT,
+ SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
break;
/* neither ssp nor stp gets suspended. */
*/
/* In all cases we will treat this as the completion of the IO req. */
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
return SCI_SUCCESS;
}
-enum sci_status
-scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code)
+static enum sci_status
+request_aborting_state_tc_event(struct scic_sds_request *sci_req,
+ u32 completion_code)
{
- if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED &&
- request->has_started_substate_machine == false)
- return scic_sds_request_started_state_tc_completion_handler(request, completion_code);
- else if (request->state_handlers->tc_completion_handler)
- return request->state_handlers->tc_completion_handler(request, completion_code);
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
+ case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
+ scic_sds_request_set_status(sci_req, SCU_TASK_DONE_TASK_ABORT,
+ SCI_FAILURE_IO_TERMINATED);
- dev_warn(scic_to_dev(request->owning_controller),
- "%s: SCIC IO Request given task completion notification %x "
- "while in wrong state %d\n",
- __func__,
- completion_code,
- sci_base_state_machine_get_state(&request->state_machine));
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ break;
- return SCI_FAILURE_INVALID_STATE;
+ default:
+ /* Unless we get some strange error wait for the task abort to complete
+ * TODO: Should there be a state change for this completion?
+ */
+ break;
+ }
+
+ return SCI_SUCCESS;
}
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_frame_handler() request. This method
- * first determines the frame type received. If this is a response frame then
- * the response data is copied to the io request response buffer for processing
- * at completion time. If the frame type is not a response buffer an error is
- * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE
- */
-static enum sci_status
-scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
- u32 frame_index)
+static enum sci_status ssp_task_request_await_tc_event(struct scic_sds_request *sci_req,
+ u32 completion_code)
{
- enum sci_status status;
- u32 *frame_header;
- struct ssp_frame_hdr ssp_hdr;
- ssize_t word_cnt;
+ 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);
- status = scic_sds_unsolicited_frame_control_get_header(
- &(scic_sds_request_get_controller(sci_req)->uf_control),
- frame_index,
- (void **)&frame_header);
+ sci_change_state(&sci_req->sm, SCI_REQ_TASK_WAIT_TC_RESP);
+ break;
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
+ /* Currently, the decision is to simply allow the task request
+ * to timeout if the task IU wasn't received successfully.
+ * There is a potential for receiving multiple task responses if
+ * we decide to send the task IU again.
+ */
+ dev_warn(scic_to_dev(sci_req->owning_controller),
+ "%s: TaskRequest:0x%p CompletionCode:%x - "
+ "ACK/NAK timeout\n", __func__, sci_req,
+ completion_code);
- word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
- sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
+ sci_change_state(&sci_req->sm, SCI_REQ_TASK_WAIT_TC_RESP);
+ 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);
- if (ssp_hdr.frame_type == SSP_RESPONSE) {
- struct ssp_response_iu *resp_iu;
- ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ break;
+ }
- status = scic_sds_unsolicited_frame_control_get_buffer(
- &(scic_sds_request_get_controller(sci_req)->uf_control),
- frame_index,
- (void **)&resp_iu);
+ return SCI_SUCCESS;
+}
- sci_swab32_cpy(&sci_req->ssp.rsp,
- resp_iu, word_cnt);
+static enum sci_status
+smp_request_await_response_tc_event(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);
- resp_iu = &sci_req->ssp.rsp;
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ break;
- if ((resp_iu->datapres == 0x01) ||
- (resp_iu->datapres == 0x02)) {
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_CHECK_RESPONSE,
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
- } else
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
- } else {
- /* This was not a response frame why did it get forwarded? */
- dev_err(scic_to_dev(sci_req->owning_controller),
- "%s: SCIC IO Request 0x%p received unexpected "
- "frame %d type 0x%02x\n",
- __func__,
- sci_req,
- frame_index,
- ssp_hdr.frame_type);
- }
+ 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);
- /*
- * In any case we are done with this frame buffer return it to the
- * controller
- */
- scic_sds_controller_release_frame(
- sci_req->owning_controller, frame_index);
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ break;
- return SCI_SUCCESS;
-}
+ 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);
-/*
- * *****************************************************************************
- * * COMPLETED STATE HANDLERS
- * ***************************************************************************** */
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ break;
+ }
+ return SCI_SUCCESS;
+}
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_complete() request. This method frees up
- * any io request resources that have been allocated and transitions the
- * request to its final state. Consider stopping the state machine instead of
- * transitioning to the final state? enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_completed_state_complete_handler(
- struct scic_sds_request *request)
+static enum sci_status
+smp_request_await_tc_event(struct scic_sds_request *sci_req,
+ u32 completion_code)
{
- if (request->was_tag_assigned_by_user != true) {
- scic_controller_free_io_tag(
- request->owning_controller, request->io_tag);
- }
+ 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_change_state(&sci_req->sm, SCI_REQ_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);
- if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) {
- scic_sds_controller_release_frame(
- request->owning_controller, request->saved_rx_frame_index);
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ break;
}
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_FINAL);
return SCI_SUCCESS;
}
-/*
- * *****************************************************************************
- * * ABORTING STATE HANDLERS
- * ***************************************************************************** */
+void scic_stp_io_request_set_ncq_tag(struct scic_sds_request *req,
+ u16 ncq_tag)
+{
+ /**
+ * @note This could be made to return an error to the user if the user
+ * attempts to set the NCQ tag in the wrong state.
+ */
+ req->tc->type.stp.ncq_tag = ncq_tag;
+}
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. This method is the
- * io request aborting state abort handlers. On receipt of a multiple
- * terminate requests the io request will transition to the completed state.
- * This should not happen in normal operation. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_aborting_state_abort_handler(
- struct scic_sds_request *request)
+static struct scu_sgl_element *pio_sgl_next(struct scic_sds_stp_request *stp_req)
{
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- return SCI_SUCCESS;
+ struct scu_sgl_element *sgl;
+ struct scu_sgl_element_pair *sgl_pair;
+ struct scic_sds_request *sci_req = to_sci_req(stp_req);
+ struct scic_sds_request_pio_sgl *pio_sgl = &stp_req->type.pio.request_current;
+
+ sgl_pair = to_sgl_element_pair(sci_req, pio_sgl->sgl_index);
+ if (!sgl_pair)
+ sgl = NULL;
+ else if (pio_sgl->sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
+ if (sgl_pair->B.address_lower == 0 &&
+ sgl_pair->B.address_upper == 0) {
+ sgl = NULL;
+ } else {
+ pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_B;
+ sgl = &sgl_pair->B;
+ }
+ } else {
+ if (sgl_pair->next_pair_lower == 0 &&
+ sgl_pair->next_pair_upper == 0) {
+ sgl = NULL;
+ } else {
+ pio_sgl->sgl_index++;
+ pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_A;
+ sgl_pair = to_sgl_element_pair(sci_req, pio_sgl->sgl_index);
+ sgl = &sgl_pair->A;
+ }
+ }
+
+ return sgl;
}
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_task_completion() request. This method
- * decodes the completion type waiting for the abort task complete
- * notification. When the abort task complete is received the io request
- * transitions to the completed state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_aborting_state_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
+static enum sci_status
+stp_request_non_data_await_h2d_tc_event(struct scic_sds_request *sci_req,
+ u32 completion_code)
{
switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
- case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED
- );
+ 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);
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_NON_DATA_WAIT_D2H);
break;
default:
- /*
- * Unless we get some strange error wait for the task abort to complete
- * TODO: Should there be a state change for this completion? */
+ /* 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_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
break;
}
return SCI_SUCCESS;
}
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_frame_handler() request. This method
- * discards the unsolicited frame since we are waiting for the abort task
- * completion. enum sci_status SCI_SUCCESS
+#define SCU_MAX_FRAME_BUFFER_SIZE 0x400 /* 1K is the maximum SCU frame data payload */
+
+/* transmit DATA_FIS from (current sgl + offset) for input
+ * parameter length. current sgl and offset is alreay stored in the IO request
*/
-static enum sci_status scic_sds_request_aborting_state_frame_handler(
+static enum sci_status scic_sds_stp_request_pio_data_out_trasmit_data_frame(
struct scic_sds_request *sci_req,
- u32 frame_index)
+ u32 length)
{
- /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scu_task_context *task_context = sci_req->tc;
+ struct scu_sgl_element_pair *sgl_pair;
+ struct scu_sgl_element *current_sgl;
+
+ /* Recycle the TC and reconstruct it for sending out DATA FIS containing
+ * for the data from current_sgl+offset for the input length
+ */
+ sgl_pair = to_sgl_element_pair(sci_req, stp_req->type.pio.request_current.sgl_index);
+ if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A)
+ current_sgl = &sgl_pair->A;
+ else
+ current_sgl = &sgl_pair->B;
- scic_sds_controller_release_frame(
- sci_req->owning_controller, frame_index);
+ /* update the TC */
+ task_context->command_iu_upper = current_sgl->address_upper;
+ task_context->command_iu_lower = current_sgl->address_lower;
+ task_context->transfer_length_bytes = length;
+ task_context->type.stp.fis_type = FIS_DATA;
- return SCI_SUCCESS;
+ /* send the new TC out. */
+ return scic_controller_continue_io(sci_req);
}
-/**
- * This method processes the completions transport layer (TL) status to
- * determine if the RAW task management frame was sent successfully. If the
- * raw frame was sent successfully, then the state for the task request
- * transitions 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_ssp_task_request_await_tc_completion_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
+static enum sci_status scic_sds_stp_request_pio_data_out_transmit_data(struct scic_sds_request *sci_req)
{
- 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,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE);
- break;
+ struct scu_sgl_element *current_sgl;
+ u32 sgl_offset;
+ u32 remaining_bytes_in_current_sgl = 0;
+ enum sci_status status = SCI_SUCCESS;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scu_sgl_element_pair *sgl_pair;
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
- /*
- * Currently, the decision is to simply allow the task request to
- * timeout if the task IU wasn't received successfully.
- * There is a potential for receiving multiple task responses if we
- * decide to send the task IU again. */
- dev_warn(scic_to_dev(sci_req->owning_controller),
- "%s: TaskRequest:0x%p CompletionCode:%x - "
- "ACK/NAK timeout\n",
- __func__,
- sci_req,
- completion_code);
+ sgl_offset = stp_req->type.pio.request_current.sgl_offset;
+ sgl_pair = to_sgl_element_pair(sci_req, stp_req->type.pio.request_current.sgl_index);
+ if (WARN_ONCE(!sgl_pair, "%s: null sgl element", __func__))
+ return SCI_FAILURE;
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE);
- break;
+ if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
+ current_sgl = &sgl_pair->A;
+ remaining_bytes_in_current_sgl = sgl_pair->A.length - sgl_offset;
+ } else {
+ current_sgl = &sgl_pair->B;
+ remaining_bytes_in_current_sgl = sgl_pair->B.length - sgl_offset;
+ }
- 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
- );
+ if (stp_req->type.pio.pio_transfer_bytes > 0) {
+ if (stp_req->type.pio.pio_transfer_bytes >= remaining_bytes_in_current_sgl) {
+ /* recycle the TC and send the H2D Data FIS from (current sgl + sgl_offset) and length = remaining_bytes_in_current_sgl */
+ status = scic_sds_stp_request_pio_data_out_trasmit_data_frame(sci_req, remaining_bytes_in_current_sgl);
+ if (status == SCI_SUCCESS) {
+ stp_req->type.pio.pio_transfer_bytes -= remaining_bytes_in_current_sgl;
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
+ /* update the current sgl, sgl_offset and save for future */
+ current_sgl = pio_sgl_next(stp_req);
+ sgl_offset = 0;
+ }
+ } else if (stp_req->type.pio.pio_transfer_bytes < remaining_bytes_in_current_sgl) {
+ /* recycle the TC and send the H2D Data FIS from (current sgl + sgl_offset) and length = type.pio.pio_transfer_bytes */
+ scic_sds_stp_request_pio_data_out_trasmit_data_frame(sci_req, stp_req->type.pio.pio_transfer_bytes);
+
+ if (status == SCI_SUCCESS) {
+ /* Sgl offset will be adjusted and saved for future */
+ sgl_offset += stp_req->type.pio.pio_transfer_bytes;
+ current_sgl->address_lower += stp_req->type.pio.pio_transfer_bytes;
+ stp_req->type.pio.pio_transfer_bytes = 0;
+ }
+ }
}
- return SCI_SUCCESS;
+ if (status == SCI_SUCCESS) {
+ stp_req->type.pio.request_current.sgl_offset = sgl_offset;
+ }
+
+ return status;
}
/**
- * This method is responsible for processing a terminate/abort request for this
- * TC while the request is waiting for the task management response
- * unsolicited frame.
- * @sci_req: This parameter specifies the request for which the
- * termination was requested.
*
- * This method returns an indication as to whether the abort request was
- * successfully handled. need to update to ensure the received UF doesn't cause
- * damage to subsequent requests (i.e. put the extended tag in a holding
- * pattern for this particular device).
+ * @stp_request: The request that is used for the SGL processing.
+ * @data_buffer: The buffer of data to be copied.
+ * @length: The length of the data transfer.
+ *
+ * Copy the data from the buffer for the length specified to the IO reqeust SGL
+ * specified data region. enum sci_status
*/
-static enum sci_status scic_sds_ssp_task_request_await_tc_response_abort_handler(
- struct scic_sds_request *request)
+static enum sci_status
+scic_sds_stp_request_pio_data_in_copy_data_buffer(struct scic_sds_stp_request *stp_req,
+ u8 *data_buf, u32 len)
{
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_ABORTING);
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ struct scic_sds_request *sci_req;
+ struct isci_request *ireq;
+ u8 *src_addr;
+ int copy_len;
+ struct sas_task *task;
+ struct scatterlist *sg;
+ void *kaddr;
+ int total_len = len;
+
+ sci_req = to_sci_req(stp_req);
+ ireq = sci_req_to_ireq(sci_req);
+ task = isci_request_access_task(ireq);
+ src_addr = data_buf;
+
+ if (task->num_scatter > 0) {
+ sg = task->scatter;
+
+ while (total_len > 0) {
+ struct page *page = sg_page(sg);
+
+ copy_len = min_t(int, total_len, sg_dma_len(sg));
+ kaddr = kmap_atomic(page, KM_IRQ0);
+ memcpy(kaddr + sg->offset, src_addr, copy_len);
+ kunmap_atomic(kaddr, KM_IRQ0);
+ total_len -= copy_len;
+ src_addr += copy_len;
+ sg = sg_next(sg);
+ }
+ } else {
+ BUG_ON(task->total_xfer_len < total_len);
+ memcpy(task->scatter, src_addr, total_len);
+ }
+
return SCI_SUCCESS;
}
/**
- * This method processes an unsolicited frame while the task mgmt 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 method returns an indication of whether the TC response frame was
- * handled successfully or not. SCI_SUCCESS Currently this value is always
- * returned and indicates successful processing of the TC response. Should
- * probably update to check frame type and make sure it is a response frame.
+ * @sci_req: The PIO DATA IN request that is to receive the data.
+ * @data_buffer: The buffer to copy from.
+ *
+ * Copy the data buffer to the io request data region. enum sci_status
*/
-static enum sci_status scic_sds_ssp_task_request_await_tc_response_frame_handler(
- struct scic_sds_request *request,
- u32 frame_index)
+static enum sci_status scic_sds_stp_request_pio_data_in_copy_data(
+ struct scic_sds_stp_request *sci_req,
+ u8 *data_buffer)
{
- scic_sds_io_request_copy_response(request);
+ enum sci_status status;
- sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- scic_sds_controller_release_frame(request->owning_controller,
- frame_index);
- return SCI_SUCCESS;
+ /*
+ * If there is less than 1K remaining in the transfer request
+ * copy just the data for the transfer */
+ if (sci_req->type.pio.pio_transfer_bytes < SCU_MAX_FRAME_BUFFER_SIZE) {
+ status = scic_sds_stp_request_pio_data_in_copy_data_buffer(
+ sci_req, data_buffer, sci_req->type.pio.pio_transfer_bytes);
+
+ if (status == SCI_SUCCESS)
+ sci_req->type.pio.pio_transfer_bytes = 0;
+ } else {
+ /* We are transfering the whole frame so copy */
+ status = scic_sds_stp_request_pio_data_in_copy_data_buffer(
+ sci_req, data_buffer, SCU_MAX_FRAME_BUFFER_SIZE);
+
+ if (status == SCI_SUCCESS)
+ sci_req->type.pio.pio_transfer_bytes -= SCU_MAX_FRAME_BUFFER_SIZE;
+ }
+
+ return status;
}
-/**
- * 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)
+static enum sci_status
+stp_request_pio_await_h2d_completion_tc_event(struct scic_sds_request *sci_req,
+ u32 completion_code)
{
+ enum sci_status status = SCI_SUCCESS;
+
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
- );
+ 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);
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
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
- );
+ 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);
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ break;
+ }
+
+ return status;
+}
+
+static enum sci_status
+pio_data_out_tx_done_tc_event(struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ enum sci_status status = SCI_SUCCESS;
+ bool all_frames_transferred = false;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ /* Transmit data */
+ if (stp_req->type.pio.pio_transfer_bytes != 0) {
+ status = scic_sds_stp_request_pio_data_out_transmit_data(sci_req);
+ if (status == SCI_SUCCESS) {
+ if (stp_req->type.pio.pio_transfer_bytes == 0)
+ all_frames_transferred = true;
+ }
+ } else if (stp_req->type.pio.pio_transfer_bytes == 0) {
+ /*
+ * this will happen if the all data is written at the
+ * first time after the pio setup fis is received
+ */
+ all_frames_transferred = true;
+ }
+
+ /* all data transferred. */
+ if (all_frames_transferred) {
+ /*
+ * Change the state to SCI_REQ_STP_PIO_DATA_IN
+ * and wait for PIO_SETUP fis / or D2H REg fis. */
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+ }
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. */
+ * 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_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
break;
}
- return SCI_SUCCESS;
+ return status;
}
-/*
- * 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)
+static void scic_sds_stp_request_udma_complete_request(
+ struct scic_sds_request *request,
+ u32 scu_status,
+ enum sci_status sci_status)
+{
+ scic_sds_request_set_status(request, scu_status, sci_status);
+ sci_change_state(&request->sm, SCI_REQ_COMPLETED);
+}
+
+static enum sci_status scic_sds_stp_request_udma_general_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index)
{
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+ struct dev_to_host_fis *frame_header;
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);
+ u32 *frame_buffer;
- status = scic_sds_unsolicited_frame_control_get_header(
- &(scic_sds_request_get_controller(sci_req)->uf_control),
- frame_index,
- &frame_header);
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
- /* byte swap the header. */
- sci_swab32_cpy(rsp_hdr, frame_header, word_cnt);
+ if ((status == SCI_SUCCESS) &&
+ (frame_header->fis_type == FIS_REGD2H)) {
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
- if (rsp_hdr->frame_type == SMP_RESPONSE) {
- void *smp_resp;
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+ }
- status = scic_sds_unsolicited_frame_control_get_buffer(
- &(scic_sds_request_get_controller(sci_req)->uf_control),
- frame_index,
- &smp_resp);
+ scic_sds_controller_release_frame(scic, frame_index);
- word_cnt = (sizeof(struct smp_req) - SMP_RESP_HDR_SZ) /
- sizeof(u32);
+ return status;
+}
- sci_swab32_cpy(((u8 *) rsp_hdr) + SMP_RESP_HDR_SZ,
- smp_resp, word_cnt);
+enum sci_status
+scic_sds_io_request_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ enum sci_base_request_states state;
+ enum sci_status status;
+ ssize_t word_cnt;
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
+ state = sci_req->sm.current_state_id;
+ switch (state) {
+ case SCI_REQ_STARTED: {
+ struct ssp_frame_hdr ssp_hdr;
+ void *frame_header;
- 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_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ &frame_header);
- scic_sds_request_set_status(
- sci_req,
- SCU_TASK_DONE_SMP_FRM_TYPE_ERR,
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+ word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
+ sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
+
+ if (ssp_hdr.frame_type == SSP_RESPONSE) {
+ struct ssp_response_iu *resp_iu;
+ ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&resp_iu);
+
+ sci_swab32_cpy(&sci_req->ssp.rsp, resp_iu, word_cnt);
+
+ resp_iu = &sci_req->ssp.rsp;
+
+ if (resp_iu->datapres == 0x01 ||
+ resp_iu->datapres == 0x02) {
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+ } else
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_SUCCESS);
+ } else {
+ /* not a response frame, why did it get forwarded? */
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC IO Request 0x%p received unexpected "
+ "frame %d type 0x%02x\n", __func__, sci_req,
+ frame_index, ssp_hdr.frame_type);
+ }
+
+ /*
+ * In any case we are done with this frame buffer return it to
+ * the controller
+ */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return SCI_SUCCESS;
+ }
+
+ case SCI_REQ_TASK_WAIT_TC_RESP:
+ scic_sds_io_request_copy_response(sci_req);
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ scic_sds_controller_release_frame(scic,frame_index);
+ return SCI_SUCCESS;
+
+ case SCI_REQ_SMP_WAIT_RESP: {
+ struct smp_resp *rsp_hdr = &sci_req->smp.rsp;
+ void *frame_header;
+
+ scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ &frame_header);
+
+ /* byte swap the header. */
+ word_cnt = SMP_RESP_HDR_SZ / sizeof(u32);
+ sci_swab32_cpy(rsp_hdr, frame_header, word_cnt);
+
+ if (rsp_hdr->frame_type == SMP_RESPONSE) {
+ void *smp_resp;
+
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ &smp_resp);
+
+ word_cnt = (sizeof(struct smp_resp) - 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_change_state(&sci_req->sm, SCI_REQ_SMP_WAIT_TC_COMP);
+ } else {
+ /*
+ * This was not a response frame why did it get
+ * forwarded?
+ */
+ dev_err(scic_to_dev(scic),
+ "%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_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ }
+
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return SCI_SUCCESS;
+ }
+
+ case SCI_REQ_STP_UDMA_WAIT_TC_COMP:
+ return scic_sds_stp_request_udma_general_frame_handler(sci_req,
+ frame_index);
+
+ case SCI_REQ_STP_UDMA_WAIT_D2H:
+ /* Use the general frame handler to copy the resposne data */
+ status = scic_sds_stp_request_udma_general_frame_handler(sci_req,
+ frame_index);
+
+ if (status != SCI_SUCCESS)
+ return status;
+
+ scic_sds_stp_request_udma_complete_request(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+
+ return SCI_SUCCESS;
+
+ case SCI_REQ_STP_NON_DATA_WAIT_D2H: {
+ struct dev_to_host_fis *frame_header;
+ u32 *frame_buffer;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+
+ if (status != SCI_SUCCESS) {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC IO Request 0x%p could not get frame "
+ "header for frame index %d, status %x\n",
+ __func__,
+ stp_req,
+ frame_index,
+ status);
+
+ return status;
+ }
+
+ switch (frame_header->fis_type) {
+ case FIS_REGD2H:
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+
+ /* The command has completed with error */
+ scic_sds_request_set_status(sci_req, SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+ break;
+
+ default:
+ dev_warn(scic_to_dev(scic),
+ "%s: IO Request:0x%p Frame Id:%d protocol "
+ "violation occurred\n", __func__, stp_req,
+ frame_index);
+
+ scic_sds_request_set_status(sci_req, SCU_TASK_DONE_UNEXP_FIS,
+ SCI_FAILURE_PROTOCOL_VIOLATION);
+ break;
+ }
+
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+
+ /* Frame has been decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+ }
+
+ case SCI_REQ_STP_PIO_WAIT_FRAME: {
+ struct isci_request *ireq = sci_req_to_ireq(sci_req);
+ struct sas_task *task = isci_request_access_task(ireq);
+ struct dev_to_host_fis *frame_header;
+ u32 *frame_buffer;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+
+ if (status != SCI_SUCCESS) {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC IO Request 0x%p could not get frame "
+ "header for frame index %d, status %x\n",
+ __func__, stp_req, frame_index, status);
+ return status;
+ }
+
+ switch (frame_header->fis_type) {
+ case FIS_PIO_SETUP:
+ /* Get from the frame buffer the PIO Setup Data */
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ /* Get the data from the PIO Setup The SCU Hardware
+ * returns first word in the frame_header and the rest
+ * of the data is in the frame buffer so we need to
+ * back up one dword
+ */
+
+ /* transfer_count: first 16bits in the 4th dword */
+ stp_req->type.pio.pio_transfer_bytes = frame_buffer[3] & 0xffff;
+
+ /* ending_status: 4th byte in the 3rd dword */
+ stp_req->type.pio.ending_status = (frame_buffer[2] >> 24) & 0xff;
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+
+ sci_req->stp.rsp.status = stp_req->type.pio.ending_status;
+
+ /* The next state is dependent on whether the
+ * request was PIO Data-in or Data out
+ */
+ if (task->data_dir == DMA_FROM_DEVICE) {
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_PIO_DATA_IN);
+ } else if (task->data_dir == DMA_TO_DEVICE) {
+ /* Transmit data */
+ status = scic_sds_stp_request_pio_data_out_transmit_data(sci_req);
+ if (status != SCI_SUCCESS)
+ break;
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_PIO_DATA_OUT);
+ }
+ break;
+
+ case FIS_SETDEVBITS:
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+ break;
+
+ case FIS_REGD2H:
+ if (frame_header->status & ATA_BUSY) {
+ /*
+ * Now why is the drive sending a D2H Register
+ * FIS when it is still busy? Do nothing since
+ * we are still in the right state.
+ */
+ dev_dbg(scic_to_dev(scic),
+ "%s: SCIC PIO Request 0x%p received "
+ "D2H Register FIS with BSY status "
+ "0x%x\n",
+ __func__,
+ stp_req,
+ frame_header->status);
+ break;
+ }
+
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.req,
+ frame_header,
+ frame_buffer);
+
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ break;
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ default:
+ /* FIXME: what do we do here? */
+ break;
+ }
+
+ /* Frame is decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
}
- scic_sds_controller_release_frame(sci_req->owning_controller,
- frame_index);
+ case SCI_REQ_STP_PIO_DATA_IN: {
+ struct dev_to_host_fis *frame_header;
+ struct sata_fis_data *frame_buffer;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+
+ if (status != SCI_SUCCESS) {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC IO Request 0x%p could not get frame "
+ "header for frame index %d, status %x\n",
+ __func__,
+ stp_req,
+ frame_index,
+ status);
+ return status;
+ }
+
+ if (frame_header->fis_type != FIS_DATA) {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC PIO Request 0x%p received frame %d "
+ "with fis type 0x%02x when expecting a data "
+ "fis.\n",
+ __func__,
+ stp_req,
+ frame_index,
+ frame_header->fis_type);
+
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_FAILURE_IO_REQUIRES_SCSI_ABORT);
+
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+
+ /* Frame is decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+ return status;
+ }
+
+ if (stp_req->type.pio.request_current.sgl_index < 0) {
+ sci_req->saved_rx_frame_index = frame_index;
+ stp_req->type.pio.pio_transfer_bytes = 0;
+ } else {
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ status = scic_sds_stp_request_pio_data_in_copy_data(stp_req,
+ (u8 *)frame_buffer);
+
+ /* Frame is decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+ }
+
+ /* Check for the end of the transfer, are there more
+ * bytes remaining for this data transfer
+ */
+ if (status != SCI_SUCCESS ||
+ stp_req->type.pio.pio_transfer_bytes != 0)
+ return status;
+
+ if ((stp_req->type.pio.ending_status & ATA_BUSY) == 0) {
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+ } else {
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+ }
+ return status;
+ }
+
+ case SCI_REQ_STP_SOFT_RESET_WAIT_D2H: {
+ struct dev_to_host_fis *frame_header;
+ u32 *frame_buffer;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+ if (status != SCI_SUCCESS) {
+ dev_err(scic_to_dev(scic),
+ "%s: SCIC IO Request 0x%p could not get frame "
+ "header for frame index %d, status %x\n",
+ __func__,
+ stp_req,
+ frame_index,
+ status);
+ return status;
+ }
+
+ switch (frame_header->fis_type) {
+ case FIS_REGD2H:
+ scic_sds_unsolicited_frame_control_get_buffer(&scic->uf_control,
+ frame_index,
+ (void **)&frame_buffer);
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+
+ /* The command has completed with error */
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+ break;
+
+ default:
+ dev_warn(scic_to_dev(scic),
+ "%s: IO Request:0x%p Frame Id:%d protocol "
+ "violation occurred\n",
+ __func__,
+ stp_req,
+ frame_index);
+
+ scic_sds_request_set_status(sci_req,
+ SCU_TASK_DONE_UNEXP_FIS,
+ SCI_FAILURE_PROTOCOL_VIOLATION);
+ break;
+ }
+
+ sci_change_state(&sci_req->sm, SCI_REQ_COMPLETED);
+
+ /* Frame has been decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+ }
+ case SCI_REQ_ABORTING:
+ /*
+ * TODO: Is it even possible to get an unsolicited frame in the
+ * aborting state?
+ */
+ scic_sds_controller_release_frame(scic, frame_index);
+ return SCI_SUCCESS;
+
+ default:
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC IO Request given unexpected frame %x while "
+ "in state %d\n",
+ __func__,
+ frame_index,
+ state);
+
+ scic_sds_controller_release_frame(scic, frame_index);
+ return SCI_FAILURE_INVALID_STATE;
+ }
+}
+
+static enum sci_status stp_request_udma_await_tc_event(struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ enum sci_status status = SCI_SUCCESS;
+
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_stp_request_udma_complete_request(sci_req,
+ SCU_TASK_DONE_GOOD,
+ SCI_SUCCESS);
+ break;
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_FIS):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
+ /* We must check ther response buffer to see if the D2H
+ * Register FIS was received before we got the TC
+ * completion.
+ */
+ if (sci_req->stp.rsp.fis_type == FIS_REGD2H) {
+ scic_sds_remote_device_suspend(sci_req->target_device,
+ SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code)));
+
+ scic_sds_stp_request_udma_complete_request(sci_req,
+ SCU_TASK_DONE_CHECK_RESPONSE,
+ SCI_FAILURE_IO_RESPONSE_VALID);
+ } else {
+ /* If we have an error completion status for the
+ * TC then we can expect a D2H register FIS from
+ * the device so we must change state to wait
+ * for it
+ */
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_UDMA_WAIT_D2H);
+ }
+ break;
+
+ /* TODO Check to see if any of these completion status need to
+ * wait for the device to host register fis.
+ */
+ /* TODO We can retry the command for SCU_TASK_DONE_CMD_LL_R_ERR
+ * - this comes only for B0
+ */
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_INV_FIS_LEN):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_R_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CMD_LL_R_ERR):
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CRC_ERR):
+ scic_sds_remote_device_suspend(sci_req->target_device,
+ SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code)));
+ /* Fall through to the default case */
+ default:
+ /* All other completion status cause the IO to be complete. */
+ scic_sds_stp_request_udma_complete_request(sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+ break;
+ }
+
+ return status;
+}
+
+static enum sci_status
+stp_request_soft_reset_await_h2d_asserted_tc_event(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_change_state(&sci_req->sm, SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG);
+ 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_change_state(&sci_req->sm, SCI_REQ_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)
+static enum sci_status
+stp_request_soft_reset_await_h2d_diagnostic_tc_event(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
- );
+ 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);
+ sci_change_state(&sci_req->sm, SCI_REQ_STP_SOFT_RESET_WAIT_D2H);
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,
+ /* 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_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ sci_change_state(&sci_req->sm, SCI_REQ_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] = {
- .start_handler = scic_sds_request_constructed_state_start_handler,
- .abort_handler = scic_sds_request_constructed_state_abort_handler,
- },
- [SCI_BASE_REQUEST_STATE_STARTED] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler,
- .frame_handler = scic_sds_request_started_state_frame_handler,
- },
- [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_ssp_task_request_await_tc_completion_tc_completion_handler,
- },
- [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE] = {
- .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,
- },
- [SCI_BASE_REQUEST_STATE_ABORTING] = {
- .abort_handler = scic_sds_request_aborting_state_abort_handler,
- .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler,
- .frame_handler = scic_sds_request_aborting_state_frame_handler,
- },
- [SCI_BASE_REQUEST_STATE_FINAL] = { },
-};
+enum sci_status
+scic_sds_io_request_tc_completion(struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ enum sci_base_request_states state;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+
+ state = sci_req->sm.current_state_id;
+
+ switch (state) {
+ case SCI_REQ_STARTED:
+ return request_started_state_tc_event(sci_req, completion_code);
+
+ case SCI_REQ_TASK_WAIT_TC_COMP:
+ return ssp_task_request_await_tc_event(sci_req,
+ completion_code);
+
+ case SCI_REQ_SMP_WAIT_RESP:
+ return smp_request_await_response_tc_event(sci_req,
+ completion_code);
+
+ case SCI_REQ_SMP_WAIT_TC_COMP:
+ return smp_request_await_tc_event(sci_req, completion_code);
+ case SCI_REQ_STP_UDMA_WAIT_TC_COMP:
+ return stp_request_udma_await_tc_event(sci_req,
+ completion_code);
+
+ case SCI_REQ_STP_NON_DATA_WAIT_H2D:
+ return stp_request_non_data_await_h2d_tc_event(sci_req,
+ completion_code);
+
+ case SCI_REQ_STP_PIO_WAIT_H2D:
+ return stp_request_pio_await_h2d_completion_tc_event(sci_req,
+ completion_code);
+
+ case SCI_REQ_STP_PIO_DATA_OUT:
+ return pio_data_out_tx_done_tc_event(sci_req, completion_code);
+
+ case SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED:
+ return stp_request_soft_reset_await_h2d_asserted_tc_event(sci_req,
+ completion_code);
+
+ case SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG:
+ return stp_request_soft_reset_await_h2d_diagnostic_tc_event(sci_req,
+ completion_code);
+
+ case SCI_REQ_ABORTING:
+ return request_aborting_state_tc_event(sci_req,
+ completion_code);
+
+ default:
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC IO Request given task completion "
+ "notification %x while in wrong state %d\n",
+ __func__,
+ completion_code,
+ state);
+ return SCI_FAILURE_INVALID_STATE;
+ }
+}
/**
* isci_request_process_response_iu() - This function sets the status and
enum sas_open_rej_reason open_rej_reason)
{
/* Task in the target is done. */
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
*response_ptr = SAS_TASK_UNDELIVERED;
*status_ptr = SAS_OPEN_REJECT;
*complete_to_host_ptr = isci_perform_normal_io_completion;
* none.
*/
static void isci_request_handle_controller_specific_errors(
- struct isci_remote_device *isci_device,
+ struct isci_remote_device *idev,
struct isci_request *request,
struct sas_task *task,
enum service_response *response_ptr,
* that we ignore the quiesce state, since we are
* concerned about the actual device state.
*/
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
+ if (!idev)
*status_ptr = SAS_DEVICE_UNKNOWN;
else
*status_ptr = SAS_ABORTED_TASK;
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
*complete_to_host_ptr =
isci_perform_normal_io_completion;
/* Task in the target is not done. */
*response_ptr = SAS_TASK_UNDELIVERED;
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
+ if (!idev)
*status_ptr = SAS_DEVICE_UNKNOWN;
else
*status_ptr = SAM_STAT_TASK_ABORTED;
- request->complete_in_target = false;
+ clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
*complete_to_host_ptr =
isci_perform_error_io_completion;
* that we ignore the quiesce state, since we are
* concerned about the actual device state.
*/
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
+ if (!idev)
*status_ptr = SAS_DEVICE_UNKNOWN;
else
*status_ptr = SAS_ABORTED_TASK;
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
*complete_to_host_ptr = isci_perform_normal_io_completion;
break;
/* Task in the target is not done. */
*response_ptr = SAS_TASK_UNDELIVERED;
*status_ptr = SAM_STAT_TASK_ABORTED;
- request->complete_in_target = false;
- *complete_to_host_ptr = isci_perform_error_io_completion;
+ if (task->task_proto == SAS_PROTOCOL_SMP) {
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+
+ *complete_to_host_ptr = isci_perform_normal_io_completion;
+ } else {
+ clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+
+ *complete_to_host_ptr = isci_perform_error_io_completion;
+ }
break;
}
}
struct ssp_response_iu *resp_iu;
void *resp_buf;
unsigned long task_flags;
- struct isci_remote_device *isci_device = request->isci_device;
+ struct isci_remote_device *idev = isci_lookup_device(task->dev);
enum service_response response = SAS_TASK_UNDELIVERED;
enum exec_status status = SAS_ABORTED_TASK;
enum isci_request_status request_status;
*
* The target is still there (since the TMF was successful).
*/
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
response = SAS_TASK_COMPLETE;
/* See if the device has been/is being stopped. Note
* that we ignore the quiesce state, since we are
* concerned about the actual device state.
*/
- if ((isci_device->status == isci_stopping)
- || (isci_device->status == isci_stopped)
- )
+ if (!idev)
status = SAS_DEVICE_UNKNOWN;
else
status = SAS_ABORTED_TASK;
* Aborting also means an external thread is explicitly managing
* this request, so that we do not complete it up the stack.
*/
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
response = SAS_TASK_UNDELIVERED;
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
+ if (!idev)
/* The device has been /is being stopped. Note that
* we ignore the quiesce state, since we are
* concerned about the actual device state.
* the device (reset, tear down, etc.), and the I/O needs
* to be completed up the stack.
*/
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
response = SAS_TASK_UNDELIVERED;
/* See if the device has been/is being stopped. Note
* that we ignore the quiesce state, since we are
* concerned about the actual device state.
*/
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
+ if (!idev)
status = SAS_DEVICE_UNKNOWN;
else
status = SAS_ABORTED_TASK;
spin_unlock(&request->state_lock);
break;
+ case dead:
+ /* This was a terminated request that timed-out during the
+ * termination process. There is no task to complete to
+ * libsas.
+ */
+ complete_to_host = isci_perform_normal_io_completion;
+ spin_unlock(&request->state_lock);
+ break;
+
default:
/* The request is done from an SCU HW perspective. */
/* use the task status set in the task struct by the
* isci_request_process_response_iu call.
*/
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
response = task->task_status.resp;
status = task->task_status.stat;
break;
response = SAS_TASK_COMPLETE;
status = SAM_STAT_GOOD;
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
if (task->task_proto == SAS_PROTOCOL_SMP) {
void *rsp = &request->sci.smp.rsp;
/* The request was terminated explicitly. No handling
* is needed in the SCSI error handler path.
*/
- request->complete_in_target = true;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
response = SAS_TASK_UNDELIVERED;
/* See if the device has been/is being stopped. Note
* that we ignore the quiesce state, since we are
* concerned about the actual device state.
*/
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
+ if (!idev)
status = SAS_DEVICE_UNKNOWN;
else
status = SAS_ABORTED_TASK;
case SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR:
isci_request_handle_controller_specific_errors(
- isci_device, request, task, &response, &status,
+ idev, request, task, &response, &status,
&complete_to_host);
break;
status = SAM_STAT_TASK_ABORTED;
complete_to_host = isci_perform_error_io_completion;
- request->complete_in_target = false;
+ clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+ break;
+
+ case SCI_FAILURE_RETRY_REQUIRED:
+
+ /* Fail the I/O so it can be retried. */
+ response = SAS_TASK_UNDELIVERED;
+ if (!idev)
+ status = SAS_DEVICE_UNKNOWN;
+ else
+ status = SAS_ABORTED_TASK;
+
+ complete_to_host = isci_perform_normal_io_completion;
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
break;
+
default:
/* Catch any otherwise unhandled error codes here. */
dev_warn(&isci_host->pdev->dev,
* that we ignore the quiesce state, since we are
* concerned about the actual device state.
*/
- if ((isci_device->status == isci_stopping) ||
- (isci_device->status == isci_stopped))
+ if (!idev)
status = SAS_DEVICE_UNKNOWN;
else
status = SAS_ABORTED_TASK;
- complete_to_host = isci_perform_error_io_completion;
- request->complete_in_target = false;
+ if (SAS_PROTOCOL_SMP == task->task_proto) {
+ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+ complete_to_host = isci_perform_normal_io_completion;
+ } else {
+ clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+ complete_to_host = isci_perform_error_io_completion;
+ }
break;
}
break;
}
- isci_request_unmap_sgl(request, isci_host->pdev);
+ switch (task->task_proto) {
+ case SAS_PROTOCOL_SSP:
+ if (task->data_dir == DMA_NONE)
+ break;
+ if (task->num_scatter == 0)
+ /* 0 indicates a single dma address */
+ dma_unmap_single(&isci_host->pdev->dev,
+ request->zero_scatter_daddr,
+ task->total_xfer_len, task->data_dir);
+ else /* unmap the sgl dma addresses */
+ 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;
+ }
/* Put the completed request on the correct list */
isci_task_save_for_upper_layer_completion(isci_host, request, response,
/* complete the io request to the core. */
scic_controller_complete_io(&isci_host->sci,
- &isci_device->sci,
+ request->sci.target_device,
&request->sci);
+ isci_put_device(idev);
+
/* set terminated handle so it cannot be completed or
* terminated again, and to cause any calls into abort
* task to recognize the already completed case.
*/
- request->terminated = true;
-
- isci_host_can_dequeue(isci_host, 1);
-}
-
-/**
- * scic_sds_request_initial_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial
- * base request is constructed. Entry into the initial state sets all handlers
- * for the io request object to their default handlers. none
- */
-static void scic_sds_request_initial_state_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_INITIAL
- );
-}
-
-/**
- * scic_sds_request_constructed_state_enter() -
- * @object: The io request object that is to enter the constructed state.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers
- * for the the constructed state. none
- */
-static void scic_sds_request_constructed_state_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED
- );
+ set_bit(IREQ_TERMINATED, &request->flags);
}
-/**
- * scic_sds_request_started_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a
- * SCSI Task request we must enter the started substate machine. none
- */
-static void scic_sds_request_started_state_enter(void *object)
+static void scic_sds_request_started_state_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_request *sci_req = object;
- struct sci_base_state_machine *sm = &sci_req->state_machine;
+ struct scic_sds_request *sci_req = container_of(sm, typeof(*sci_req), sm);
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;
*/
task = ireq->ttype == io_task ? isci_request_access_task(ireq) : NULL;
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_STARTED
- );
-
- /* Most of the request state machines have a started substate machine so
- * start its execution on the entry to the started state.
+ /* all unaccelerated request types (non ssp or ncq) handled with
+ * substates
*/
- 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);
+ sci_change_state(sm, SCI_REQ_TASK_WAIT_TC_COMP);
+ } else if (!task &&
+ (isci_request_access_tmf(ireq)->tmf_code == isci_tmf_sata_srst_high ||
+ isci_request_access_tmf(ireq)->tmf_code == isci_tmf_sata_srst_low)) {
+ sci_change_state(sm, SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED);
} else if (task && task->task_proto == SAS_PROTOCOL_SMP) {
- sci_base_state_machine_change_state(sm,
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE);
+ sci_change_state(sm, SCI_REQ_SMP_WAIT_RESP);
+ } else if (task && sas_protocol_ata(task->task_proto) &&
+ !task->ata_task.use_ncq) {
+ u32 state;
+
+ if (task->data_dir == DMA_NONE)
+ state = SCI_REQ_STP_NON_DATA_WAIT_H2D;
+ else if (task->ata_task.dma_xfer)
+ state = SCI_REQ_STP_UDMA_WAIT_TC_COMP;
+ else /* PIO */
+ state = SCI_REQ_STP_PIO_WAIT_H2D;
+
+ sci_change_state(sm, state);
}
}
-/**
- * scic_sds_request_started_state_exit() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
- * object.
- *
- * This method implements the actions taken when exiting the
- * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be
- * to stop the started substate machine. none
- */
-static void scic_sds_request_started_state_exit(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- if (sci_req->has_started_substate_machine == true)
- sci_base_state_machine_stop(&sci_req->started_substate_machine);
-}
-
-/**
- * scic_sds_request_completed_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
- * object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the
- * SCIC_SDS_IO_REQUEST has completed. The method will decode the request
- * completion status and convert it to an enum sci_status to return in the
- * completion callback function. none
- */
-static void scic_sds_request_completed_state_enter(void *object)
+static void scic_sds_request_completed_state_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_request *sci_req = object;
- struct scic_sds_controller *scic =
- scic_sds_request_get_controller(sci_req);
+ struct scic_sds_request *sci_req = container_of(sm, typeof(*sci_req), sm);
+ struct scic_sds_controller *scic = sci_req->owning_controller;
struct isci_host *ihost = scic_to_ihost(scic);
struct isci_request *ireq = sci_req_to_ireq(sci_req);
- SET_STATE_HANDLER(sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-
/* Tell the SCI_USER that the IO request is complete */
- if (sci_req->is_task_management_request == false)
+ if (!test_bit(IREQ_TMF, &ireq->flags))
isci_request_io_request_complete(ihost, ireq,
sci_req->sci_status);
else
isci_task_request_complete(ihost, ireq, sci_req->sci_status);
}
-/**
- * scic_sds_request_aborting_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST
- * object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_ABORTING state. none
- */
-static void scic_sds_request_aborting_state_enter(void *object)
+static void scic_sds_request_aborting_state_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_request *sci_req = object;
+ struct scic_sds_request *sci_req = container_of(sm, typeof(*sci_req), sm);
/* Setting the abort bit in the Task Context is required by the silicon. */
- sci_req->task_context_buffer->abort = 1;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_ABORTING
- );
+ sci_req->tc->abort = 1;
}
-/**
- * scic_sds_request_final_state_enter() -
- * @object: This parameter specifies the base object for which the state
- * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the
- * state handlers in place. none
- */
-static void scic_sds_request_final_state_enter(void *object)
+static void scic_sds_stp_request_started_non_data_await_h2d_completion_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_request *sci_req = object;
+ struct scic_sds_request *sci_req = container_of(sm, typeof(*sci_req), sm);
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCI_BASE_REQUEST_STATE_FINAL
- );
+ scic_sds_remote_device_set_working_request(sci_req->target_device,
+ sci_req);
}
-static void scic_sds_io_request_started_task_mgmt_await_tc_completion_substate_enter(
- void *object)
+static void scic_sds_stp_request_started_pio_await_h2d_completion_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_request *sci_req = object;
+ struct scic_sds_request *sci_req = container_of(sm, typeof(*sci_req), sm);
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
- );
+ scic_sds_remote_device_set_working_request(sci_req->target_device,
+ sci_req);
}
-static void scic_sds_io_request_started_task_mgmt_await_task_response_substate_enter(
- void *object)
+static void scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_request *sci_req = object;
+ struct scic_sds_request *sci_req = container_of(sm, typeof(*sci_req), sm);
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE
- );
+ scic_sds_remote_device_set_working_request(sci_req->target_device,
+ sci_req);
}
-static void scic_sds_smp_request_started_await_response_substate_enter(void *object)
+static void scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter(struct sci_base_state_machine *sm)
{
- struct scic_sds_request *sci_req = object;
+ struct scic_sds_request *sci_req = container_of(sm, typeof(*sci_req), sm);
+ struct scu_task_context *tc = sci_req->tc;
+ struct host_to_dev_fis *h2d_fis;
+ enum sci_status status;
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
- );
-}
+ /* Clear the SRST bit */
+ h2d_fis = &sci_req->stp.cmd;
+ h2d_fis->control = 0;
-static void scic_sds_smp_request_started_await_tc_completion_substate_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
+ /* Clear the TC control bit */
+ tc->control_frame = 0;
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_request_state_handler_table,
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION
- );
+ status = scic_controller_continue_io(sci_req);
+ WARN_ONCE(status != SCI_SUCCESS, "isci: continue io failure\n");
}
static const struct sci_base_state scic_sds_request_state_table[] = {
- [SCI_BASE_REQUEST_STATE_INITIAL] = {
- .enter_state = scic_sds_request_initial_state_enter,
- },
- [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
- .enter_state = scic_sds_request_constructed_state_enter,
- },
- [SCI_BASE_REQUEST_STATE_STARTED] = {
+ [SCI_REQ_INIT] = { },
+ [SCI_REQ_CONSTRUCTED] = { },
+ [SCI_REQ_STARTED] = {
.enter_state = scic_sds_request_started_state_enter,
- .exit_state = scic_sds_request_started_state_exit
},
- [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION] = {
- .enter_state = scic_sds_io_request_started_task_mgmt_await_tc_completion_substate_enter,
+ [SCI_REQ_STP_NON_DATA_WAIT_H2D] = {
+ .enter_state = scic_sds_stp_request_started_non_data_await_h2d_completion_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,
+ [SCI_REQ_STP_NON_DATA_WAIT_D2H] = { },
+ [SCI_REQ_STP_PIO_WAIT_H2D] = {
+ .enter_state = scic_sds_stp_request_started_pio_await_h2d_completion_enter,
},
- [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE] = {
- .enter_state = scic_sds_smp_request_started_await_response_substate_enter,
+ [SCI_REQ_STP_PIO_WAIT_FRAME] = { },
+ [SCI_REQ_STP_PIO_DATA_IN] = { },
+ [SCI_REQ_STP_PIO_DATA_OUT] = { },
+ [SCI_REQ_STP_UDMA_WAIT_TC_COMP] = { },
+ [SCI_REQ_STP_UDMA_WAIT_D2H] = { },
+ [SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED] = {
+ .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter,
},
- [SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION] = {
- .enter_state = scic_sds_smp_request_started_await_tc_completion_substate_enter,
+ [SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG] = {
+ .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter,
},
- [SCI_BASE_REQUEST_STATE_COMPLETED] = {
+ [SCI_REQ_STP_SOFT_RESET_WAIT_D2H] = { },
+ [SCI_REQ_TASK_WAIT_TC_COMP] = { },
+ [SCI_REQ_TASK_WAIT_TC_RESP] = { },
+ [SCI_REQ_SMP_WAIT_RESP] = { },
+ [SCI_REQ_SMP_WAIT_TC_COMP] = { },
+ [SCI_REQ_COMPLETED] = {
.enter_state = scic_sds_request_completed_state_enter,
},
- [SCI_BASE_REQUEST_STATE_ABORTING] = {
+ [SCI_REQ_ABORTING] = {
.enter_state = scic_sds_request_aborting_state_enter,
},
- [SCI_BASE_REQUEST_STATE_FINAL] = {
- .enter_state = scic_sds_request_final_state_enter,
- },
+ [SCI_REQ_FINAL] = { },
};
-static void scic_sds_general_request_construct(struct scic_sds_controller *scic,
- struct scic_sds_remote_device *sci_dev,
- u16 io_tag, struct scic_sds_request *sci_req)
+static void
+scic_sds_general_request_construct(struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *sci_dev,
+ u16 io_tag,
+ struct scic_sds_request *sci_req)
{
- sci_base_state_machine_construct(&sci_req->state_machine, sci_req,
- scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL);
- sci_base_state_machine_start(&sci_req->state_machine);
+ sci_init_sm(&sci_req->sm, scic_sds_request_state_table, SCI_REQ_INIT);
sci_req->io_tag = io_tag;
sci_req->owning_controller = scic;
sci_req->target_device = sci_dev;
- sci_req->has_started_substate_machine = false;
sci_req->protocol = SCIC_NO_PROTOCOL;
sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
- sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev);
sci_req->sci_status = SCI_SUCCESS;
sci_req->scu_status = 0;
sci_req->post_context = 0xFFFFFFFF;
-
- sci_req->is_task_management_request = false;
-
- if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
- sci_req->was_tag_assigned_by_user = false;
- sci_req->task_context_buffer = &sci_req->tc;
- } else {
- sci_req->was_tag_assigned_by_user = true;
-
- sci_req->task_context_buffer =
- scic_sds_controller_get_task_context_buffer(scic, io_tag);
- }
+ sci_req->tc = &scic->task_context_table[ISCI_TAG_TCI(io_tag)];
+ WARN_ONCE(io_tag == SCI_CONTROLLER_INVALID_IO_TAG, "straggling invalid tag usage\n");
}
static enum sci_status
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;
- memset(sci_req->task_context_buffer, 0,
- offsetof(struct scu_task_context, sgl_pair_ab));
+ memset(sci_req->tc, 0, offsetof(struct scu_task_context, sgl_pair_ab));
return status;
}
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));
+ set_bit(IREQ_TMF, &sci_req_to_ireq(sci_req)->flags);
+ memset(sci_req->tc, 0, sizeof(struct scu_task_context));
} else
status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
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)
+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 scic_sds_controller *scic;
+ 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, smp_req,
- word_cnt);
- task_context = scic_sds_request_get_task_context(sci_req);
+ task_context = sci_req->tc;
- 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);
task_context->address_modifier = 0;
/* 10h */
- task_context->ssp_command_iu_length = smp_req->req_len;
+ task_context->ssp_command_iu_length = 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));
+ memcpy(&task_context->type.smp, &cmd, sizeof(u32));
/*
* 40h
*/
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));
- }
-
+ 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) |
+ ISCI_TAG_TCI(sci_req->io_tag));
/*
* 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 = 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);
+ sci_change_state(&sci_req->sm, SCI_REQ_CONSTRUCTED);
return SCI_SUCCESS;
}
*/
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",
*
* SCI_SUCCESS on successfull completion, or specific failure code.
*/
-static enum sci_status isci_io_request_build(
- struct isci_host *isci_host,
- struct isci_request *request,
- struct isci_remote_device *isci_device)
+static enum sci_status isci_io_request_build(struct isci_host *isci_host,
+ struct isci_request *request,
+ struct isci_remote_device *isci_device,
+ u16 tag)
{
enum sci_status status = SCI_SUCCESS;
struct sas_task *task = isci_request_access_task(request);
* we will let the core allocate the IO tag.
*/
status = scic_io_request_construct(&isci_host->sci, sci_device,
- SCI_CONTROLLER_INVALID_IO_TAG,
- &request->sci);
+ tag, &request->sci);
if (status != SCI_SUCCESS) {
dev_warn(&isci_host->pdev->dev,
return SCI_SUCCESS;
}
-/**
- * isci_request_alloc_core() - This function gets the request object from the
- * isci_host dma cache.
- * @isci_host: This parameter specifies the ISCI host object
- * @isci_request: This parameter will contain the pointer to the new
- * isci_request object.
- * @isci_device: This parameter is the pointer to the isci remote device object
- * that is the destination for this request.
- * @gfp_flags: This parameter specifies the os allocation flags.
- *
- * SCI_SUCCESS on successfull completion, or specific failure code.
- */
-static int isci_request_alloc_core(
- struct isci_host *isci_host,
- struct isci_request **isci_request,
- struct isci_remote_device *isci_device,
- gfp_t gfp_flags)
+static struct isci_request *isci_request_alloc_core(struct isci_host *ihost,
+ gfp_t gfp_flags)
{
- int ret = 0;
dma_addr_t handle;
- struct isci_request *request;
-
+ struct isci_request *ireq;
- /* get pointer to dma memory. This actually points
- * to both the isci_remote_device object and the
- * sci object. The isci object is at the beginning
- * of the memory allocated here.
- */
- request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle);
- if (!request) {
- dev_warn(&isci_host->pdev->dev,
+ ireq = dma_pool_alloc(ihost->dma_pool, gfp_flags, &handle);
+ if (!ireq) {
+ dev_warn(&ihost->pdev->dev,
"%s: dma_pool_alloc returned NULL\n", __func__);
- return -ENOMEM;
+ return NULL;
}
/* initialize the request object. */
- spin_lock_init(&request->state_lock);
- request->request_daddr = handle;
- request->isci_host = isci_host;
- request->isci_device = isci_device;
- request->io_request_completion = NULL;
- request->terminated = false;
-
- request->num_sg_entries = 0;
-
- request->complete_in_target = false;
-
- INIT_LIST_HEAD(&request->completed_node);
- INIT_LIST_HEAD(&request->dev_node);
-
- *isci_request = request;
- isci_request_change_state(request, allocated);
-
- return ret;
+ spin_lock_init(&ireq->state_lock);
+ ireq->request_daddr = handle;
+ ireq->isci_host = ihost;
+ ireq->io_request_completion = NULL;
+ ireq->flags = 0;
+ ireq->num_sg_entries = 0;
+ INIT_LIST_HEAD(&ireq->completed_node);
+ INIT_LIST_HEAD(&ireq->dev_node);
+
+ isci_request_change_state(ireq, allocated);
+
+ return ireq;
}
-static int isci_request_alloc_io(
- struct isci_host *isci_host,
- struct sas_task *task,
- struct isci_request **isci_request,
- struct isci_remote_device *isci_device,
- gfp_t gfp_flags)
+static struct isci_request *isci_request_alloc_io(struct isci_host *ihost,
+ struct sas_task *task,
+ gfp_t gfp_flags)
{
- int retval = isci_request_alloc_core(isci_host, isci_request,
- isci_device, gfp_flags);
-
- if (!retval) {
- (*isci_request)->ttype_ptr.io_task_ptr = task;
- (*isci_request)->ttype = io_task;
+ struct isci_request *ireq;
- task->lldd_task = *isci_request;
+ ireq = isci_request_alloc_core(ihost, gfp_flags);
+ if (ireq) {
+ ireq->ttype_ptr.io_task_ptr = task;
+ ireq->ttype = io_task;
+ task->lldd_task = ireq;
}
- return retval;
+ return ireq;
}
-/**
- * isci_request_alloc_tmf() - This function gets the request object from the
- * isci_host dma cache and initializes the relevant fields as a sas_task.
- * @isci_host: This parameter specifies the ISCI host object
- * @sas_task: This parameter is the task struct from the upper layer driver.
- * @isci_request: This parameter will contain the pointer to the new
- * isci_request object.
- * @isci_device: This parameter is the pointer to the isci remote device object
- * that is the destination for this request.
- * @gfp_flags: This parameter specifies the os allocation flags.
- *
- * SCI_SUCCESS on successfull completion, or specific failure code.
- */
-int isci_request_alloc_tmf(
- struct isci_host *isci_host,
- struct isci_tmf *isci_tmf,
- struct isci_request **isci_request,
- struct isci_remote_device *isci_device,
- gfp_t gfp_flags)
+struct isci_request *isci_request_alloc_tmf(struct isci_host *ihost,
+ struct isci_tmf *isci_tmf,
+ gfp_t gfp_flags)
{
- int retval = isci_request_alloc_core(isci_host, isci_request,
- isci_device, gfp_flags);
+ struct isci_request *ireq;
- if (!retval) {
-
- (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf;
- (*isci_request)->ttype = tmf_task;
+ ireq = isci_request_alloc_core(ihost, gfp_flags);
+ if (ireq) {
+ ireq->ttype_ptr.tmf_task_ptr = isci_tmf;
+ ireq->ttype = tmf_task;
}
- return retval;
+ return ireq;
}
-/**
- * isci_request_execute() - This function allocates the isci_request object,
- * all fills in some common fields.
- * @isci_host: This parameter specifies the ISCI host object
- * @sas_task: This parameter is the task struct from the upper layer driver.
- * @isci_request: This parameter will contain the pointer to the new
- * isci_request object.
- * @gfp_flags: This parameter specifies the os allocation flags.
- *
- * SCI_SUCCESS on successfull completion, or specific failure code.
- */
-int isci_request_execute(
- struct isci_host *isci_host,
- struct sas_task *task,
- struct isci_request **isci_request,
- gfp_t gfp_flags)
+int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *idev,
+ struct sas_task *task, u16 tag, gfp_t gfp_flags)
{
- int ret = 0;
- struct scic_sds_remote_device *sci_device;
enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
- struct isci_remote_device *isci_device;
- struct isci_request *request;
+ struct isci_request *ireq;
unsigned long flags;
-
- isci_device = task->dev->lldd_dev;
- sci_device = &isci_device->sci;
+ int ret = 0;
/* do common allocation and init of request object. */
- ret = isci_request_alloc_io(
- isci_host,
- task,
- &request,
- isci_device,
- gfp_flags
- );
-
- if (ret)
+ ireq = isci_request_alloc_io(ihost, task, gfp_flags);
+ if (!ireq)
goto out;
- status = isci_io_request_build(isci_host, request, isci_device);
+ status = isci_io_request_build(ihost, ireq, idev, tag);
if (status != SCI_SUCCESS) {
- dev_warn(&isci_host->pdev->dev,
+ dev_warn(&ihost->pdev->dev,
"%s: request_construct failed - status = 0x%x\n",
__func__,
status);
goto out;
}
- spin_lock_irqsave(&isci_host->scic_lock, flags);
+ spin_lock_irqsave(&ihost->scic_lock, flags);
+
+ if (test_bit(IDEV_IO_NCQERROR, &idev->flags)) {
+
+ if (isci_task_is_ncq_recovery(task)) {
+
+ /* The device is in an NCQ recovery state. Issue the
+ * request on the task side. Note that it will
+ * complete on the I/O request side because the
+ * request was built that way (ie.
+ * ireq->is_task_management_request is false).
+ */
+ status = scic_controller_start_task(&ihost->sci,
+ &idev->sci,
+ &ireq->sci);
+ } else {
+ status = SCI_FAILURE;
+ }
+ } else {
+ /* send the request, let the core assign the IO TAG. */
+ status = scic_controller_start_io(&ihost->sci, &idev->sci,
+ &ireq->sci);
+ }
- /* send the request, let the core assign the IO TAG. */
- status = scic_controller_start_io(&isci_host->sci, sci_device,
- &request->sci,
- SCI_CONTROLLER_INVALID_IO_TAG);
if (status != SCI_SUCCESS &&
status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
- dev_warn(&isci_host->pdev->dev,
+ dev_warn(&ihost->pdev->dev,
"%s: failed request start (0x%x)\n",
__func__, status);
- spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+ spin_unlock_irqrestore(&ihost->scic_lock, flags);
goto out;
}
* Update it's status and add it to the list in the
* remote device object.
*/
- isci_request_change_state(request, started);
- list_add(&request->dev_node, &isci_device->reqs_in_process);
+ list_add(&ireq->dev_node, &idev->reqs_in_process);
if (status == SCI_SUCCESS) {
/* Save the tag for possible task mgmt later. */
- request->io_tag = request->sci.io_tag;
+ ireq->io_tag = ireq->sci.io_tag;
+ isci_request_change_state(ireq, started);
} else {
/* The request did not really start in the
* hardware, so clear the request handle
* here so no terminations will be done.
*/
- request->terminated = true;
+ set_bit(IREQ_TERMINATED, &ireq->flags);
+ isci_request_change_state(ireq, completed);
}
- spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+ spin_unlock_irqrestore(&ihost->scic_lock, flags);
if (status ==
SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
/* Signal libsas that we need the SCSI error
- * handler thread to work on this I/O and that
- * we want a device reset.
- */
+ * handler thread to work on this I/O and that
+ * we want a device reset.
+ */
spin_lock_irqsave(&task->task_state_lock, flags);
task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
spin_unlock_irqrestore(&task->task_state_lock, flags);
/* Cause this task to be scheduled in the SCSI error
- * handler thread.
- */
- isci_execpath_callback(isci_host, task,
+ * handler thread.
+ */
+ isci_execpath_callback(ihost, task,
sas_task_abort);
/* Change the status, since we are holding
- * the I/O until it is managed by the SCSI
- * error handler.
- */
+ * the I/O until it is managed by the SCSI
+ * error handler.
+ */
status = SCI_SUCCESS;
}
out:
if (status != SCI_SUCCESS) {
/* release dma memory on failure. */
- isci_request_free(isci_host, request);
- request = NULL;
+ isci_request_free(ihost, ireq);
+ ireq = NULL;
ret = SCI_FAILURE;
}
- *isci_request = request;
return ret;
}
-
-
-
projects / profile / ivi / kernel-adaptation-intel-automotive.git / blobdiff