remote_node_context.o \
remote_node_table.o \
unsolicited_frame_control.o \
- stp_request.o \
port_config.o \
#include "request.h"
#include "sata.h"
#include "scu_completion_codes.h"
+#include "scu_event_codes.h"
#include "sas.h"
/**
* the Scatter-Gather List.
*
*/
-void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
+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;
sizeof(struct ssp_task_iu) / sizeof(u32);
}
+/**
+ * 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.
+ *
+ * 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_controller *controller;
+ struct scic_sds_remote_device *target_device;
+ struct scic_sds_port *target_port;
+
+ controller = scic_sds_request_get_controller(sci_req);
+ 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;
+
+ 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(
+ 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(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(
+ controller) <<
+ SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+ (scic_sds_port_get_index(target_port) <<
+ SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
+ }
+
+ /*
+ * 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;
+}
+
+
/**
- * 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.
+ * scu_stp_raw_request_construct_task_context -
+ * @sci_req: This parameter specifies the STP request object for which to
+ * construct a RAW command frame task context.
+ * @task_context: This parameter specifies the SCU specific task context buffer
+ * to construct.
*
- * enum sci_status, returns invalid parameter is cdb > 16
+ * This method performs the operations common to all SATA/STP requests
+ * utilizing the raw frame method. none
*/
+static void scu_stp_raw_request_construct_task_context(struct scic_sds_stp_request *stp_req,
+ struct scu_task_context *task_context)
+{
+ struct scic_sds_request *sci_req = to_sci_req(stp_req);
+
+ 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(stp_req,
+ sci_req->task_context_buffer);
+
+ 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);
+ /* Since the IO request copy of the TC contains the same data as
+ * the actual TC this pointer is vaild for either.
+ */
+ pio->request_current.sgl_pair = &sci_req->task_context_buffer->sgl_pair_ab;
+ } else {
+ /* The user does not want the data copied to the SGL buffer location */
+ pio->request_current.sgl_pair = NULL;
+ }
+ 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->task_context_buffer;
+
+ /* 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->stp.req,
+ sci_req->task_context_buffer);
+ 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->stp.req,
+ sci_req->task_context_buffer);
+ 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED);
return SCI_SUCCESS;
}
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_BASE_REQUEST_STATE_CONSTRUCTED);
return SCI_SUCCESS;
}
-
static enum sci_status scic_io_request_construct_basic_sata(struct scic_sds_request *sci_req)
{
enum sci_status status;
if (status == SCI_SUCCESS)
sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+ SCI_BASE_REQUEST_STATE_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->stp.req,
+ sci_req->task_context_buffer);
} 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_CONSTRUCTED);
return status;
}
/* Everything is good go ahead and change state */
sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_STARTED);
+ SCI_BASE_REQUEST_STATE_STARTED);
return SCI_SUCCESS;
}
SCI_FAILURE_IO_TERMINATED);
sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ 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)
+static enum sci_status scic_sds_request_started_state_abort_handler(struct scic_sds_request *sci_req)
{
- 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);
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_ABORTING);
return SCI_SUCCESS;
}
*/
/* 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
return SCI_SUCCESS;
}
enum sci_status
scic_sds_io_request_tc_completion(struct scic_sds_request *request, 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)
+ if (request->state_handlers->tc_completion_handler)
return request->state_handlers->tc_completion_handler(request, completion_code);
dev_warn(scic_to_dev(request->owning_controller),
}
sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_FINAL);
+ SCI_BASE_REQUEST_STATE_FINAL);
return SCI_SUCCESS;
}
struct scic_sds_request *request)
{
sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ SCI_BASE_REQUEST_STATE_COMPLETED);
return SCI_SUCCESS;
}
);
sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ SCI_BASE_REQUEST_STATE_COMPLETED);
break;
default:
SCI_SUCCESS);
sci_base_state_machine_change_state(&sci_req->state_machine,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE);
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE);
break;
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
completion_code);
sci_base_state_machine_change_state(&sci_req->state_machine,
- SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE);
+ SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE);
break;
default:
);
sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ SCI_BASE_REQUEST_STATE_COMPLETED);
break;
}
struct scic_sds_request *request)
{
sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_ABORTING);
+ SCI_BASE_REQUEST_STATE_ABORTING);
sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ SCI_BASE_REQUEST_STATE_COMPLETED);
return SCI_SUCCESS;
}
scic_sds_io_request_copy_response(request);
sci_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ SCI_BASE_REQUEST_STATE_COMPLETED);
scic_sds_controller_release_frame(request->owning_controller,
frame_index);
return SCI_SUCCESS;
/*
* 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
break;
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
* 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
- );
+ scic_sds_request_set_status(sci_req, SCU_TASK_DONE_SMP_RESP_TO_ERR,
+ SCI_FAILURE_RETRY_REQUIRED);
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
break;
default:
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
);
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
break;
}
sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
sci_base_state_machine_change_state(&sci_req->state_machine,
- SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION);
+ 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),
scic_sds_request_set_status(
sci_req,
- SCU_TASK_DONE_SMP_FRM_TYPE_ERR,
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+ SCU_TASK_DONE_SMP_FRM_TYPE_ERR,
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ }
+
+ scic_sds_controller_release_frame(sci_req->owning_controller,
+ frame_index);
+
+ return SCI_SUCCESS;
+}
+
+/**
+ * This method processes the completions transport layer (TL) status to
+ * determine if the SMP request was sent successfully. If the SMP request
+ * was sent successfully, then the state for the SMP request transits to
+ * waiting for a response frame.
+ * @sci_req: This parameter specifies the request for which the TC
+ * completion was received.
+ * @completion_code: This parameter indicates the completion status information
+ * for the TC.
+ *
+ * Indicate if the tc completion handler was successful. SCI_SUCCESS currently
+ * this method always returns success.
+ */
+static enum sci_status scic_sds_smp_request_await_tc_completion_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(sci_req, SCU_TASK_DONE_GOOD,
+ SCI_SUCCESS);
+
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ }
+
+ return SCI_SUCCESS;
+}
+
+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->task_context_buffer->type.stp.ncq_tag = ncq_tag;
+}
+
+/**
+ *
+ * @sci_req:
+ *
+ * Get the next SGL element from the request. - Check on which SGL element pair
+ * we are working - if working on SLG pair element A - advance to element B -
+ * else - check to see if there are more SGL element pairs for this IO request
+ * - if there are more SGL element pairs - advance to the next pair and return
+ * element A struct scu_sgl_element*
+ */
+static struct scu_sgl_element *scic_sds_stp_request_pio_get_next_sgl(struct scic_sds_stp_request *stp_req)
+{
+ struct scu_sgl_element *current_sgl;
+ 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;
+
+ if (pio_sgl->sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
+ if (pio_sgl->sgl_pair->B.address_lower == 0 &&
+ pio_sgl->sgl_pair->B.address_upper == 0) {
+ current_sgl = NULL;
+ } else {
+ pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_B;
+ current_sgl = &pio_sgl->sgl_pair->B;
+ }
+ } else {
+ if (pio_sgl->sgl_pair->next_pair_lower == 0 &&
+ pio_sgl->sgl_pair->next_pair_upper == 0) {
+ current_sgl = NULL;
+ } else {
+ u64 phys_addr;
+
+ phys_addr = pio_sgl->sgl_pair->next_pair_upper;
+ phys_addr <<= 32;
+ phys_addr |= pio_sgl->sgl_pair->next_pair_lower;
+
+ pio_sgl->sgl_pair = scic_request_get_virt_addr(sci_req, phys_addr);
+ pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_A;
+ current_sgl = &pio_sgl->sgl_pair->A;
+ }
+ }
+
+ return current_sgl;
+}
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * This method processes a TC completion. The expected TC completion is for
+ * the transmission of the H2D register FIS containing the SATA/STP non-data
+ * request. This method always successfully processes the TC completion.
+ * SCI_SUCCESS This value is always returned.
+ */
+static enum sci_status scic_sds_stp_request_non_data_await_h2d_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE
+ );
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine, SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @request: This parameter specifies the request for which a frame has been
+ * received.
+ * @frame_index: This parameter specifies the index of the frame that has been
+ * received.
+ *
+ * This method processes frames received from the target while waiting for a
+ * device to host register FIS. If a non-register FIS is received during this
+ * time, it is treated as a protocol violation from an IO perspective. Indicate
+ * if the received frame was processed successfully.
+ */
+static enum sci_status scic_sds_stp_request_non_data_await_d2h_frame_handler(
+ struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+ struct dev_to_host_fis *frame_header;
+ u32 *frame_buffer;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+
+ 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(sci_req->owning_controller),
+ "%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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+
+ /* Frame has been decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+}
+
+#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_stp_request_pio_data_out_trasmit_data_frame(
+ struct scic_sds_request *sci_req,
+ u32 length)
+{
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scu_task_context *task_context;
+ 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
+ */
+ task_context = scic_sds_controller_get_task_context_buffer(scic,
+ sci_req->io_tag);
+
+ if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A)
+ current_sgl = &stp_req->type.pio.request_current.sgl_pair->A;
+ else
+ current_sgl = &stp_req->type.pio.request_current.sgl_pair->B;
+
+ /* 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;
+
+ /* send the new TC out. */
+ return scic_controller_continue_io(sci_req);
+}
+
+static enum sci_status scic_sds_stp_request_pio_data_out_transmit_data(struct scic_sds_request *sci_req)
+{
+
+ 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;
+
+ sgl_offset = stp_req->type.pio.request_current.sgl_offset;
+
+ if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
+ current_sgl = &(stp_req->type.pio.request_current.sgl_pair->A);
+ remaining_bytes_in_current_sgl = stp_req->type.pio.request_current.sgl_pair->A.length - sgl_offset;
+ } else {
+ current_sgl = &(stp_req->type.pio.request_current.sgl_pair->B);
+ remaining_bytes_in_current_sgl = stp_req->type.pio.request_current.sgl_pair->B.length - sgl_offset;
+ }
+
+
+ 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;
+
+ /* update the current sgl, sgl_offset and save for future */
+ current_sgl = scic_sds_stp_request_pio_get_next_sgl(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;
+ }
+ }
+ }
+
+ if (status == SCI_SUCCESS) {
+ stp_req->type.pio.request_current.sgl_offset = sgl_offset;
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @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_stp_request_pio_data_in_copy_data_buffer(struct scic_sds_stp_request *stp_req,
+ u8 *data_buf, u32 len)
+{
+ 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;
+}
+
+/**
+ *
+ * @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_stp_request_pio_data_in_copy_data(
+ struct scic_sds_stp_request *sci_req,
+ u8 *data_buffer)
+{
+ enum sci_status status;
+
+ /*
+ * 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;
+}
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * enum sci_status
+ */
+static enum sci_status scic_sds_stp_request_pio_await_h2d_completion_tc_completion_handler(
+ 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_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
+ );
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED
+ );
+ break;
+ }
+
+ return status;
+}
+
+static enum sci_status scic_sds_stp_request_pio_await_frame_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;
+ 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;
+ enum sci_status status;
+ 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE);
+ } 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE);
+ }
+ break;
+ case FIS_SETDEVBITS:
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE);
+ 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
+ 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;
+}
+
+static enum sci_status scic_sds_stp_request_pio_data_in_await_data_frame_handler(struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+ struct dev_to_host_fis *frame_header;
+ struct sata_fis_data *frame_buffer;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+
+ 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) {
+ if (stp_req->type.pio.request_current.sgl_pair == NULL) {
+ 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+ } else {
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE);
+ }
+ } else {
+ 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+
+ /* Frame is decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+ }
+
+ return status;
+}
+
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * enum sci_status
+ */
+static enum sci_status scic_sds_stp_request_pio_data_out_await_data_transmit_completion_tc_completion_handler(
+
+ 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 SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_FRAME_SUBSTATE
+ * and wait for PIO_SETUP fis / or D2H REg fis. */
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
+ );
+ }
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED
+ );
+ break;
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @request: This is the request which is receiving the event.
+ * @event_code: This is the event code that the request on which the request is
+ * expected to take action.
+ *
+ * This method will handle any link layer events while waiting for the data
+ * frame. enum sci_status SCI_SUCCESS SCI_FAILURE
+ */
+static enum sci_status scic_sds_stp_request_pio_data_in_await_data_event_handler(
+ struct scic_sds_request *request,
+ u32 event_code)
+{
+ enum sci_status status;
+
+ 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_base_state_machine_change_state(
+ &request->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
+ );
+
+ status = SCI_SUCCESS;
+ break;
+
+ default:
+ dev_err(scic_to_dev(request->owning_controller),
+ "%s: SCIC PIO Request 0x%p received unexpected "
+ "event 0x%08x\n",
+ __func__, request, event_code);
+
+ /* / @todo Should we fail the PIO request when we get an unexpected event? */
+ status = SCI_FAILURE;
+ break;
+ }
+
+ return status;
+}
+
+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_base_state_machine_change_state(&request->state_machine,
+ SCI_BASE_REQUEST_STATE_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;
+ u32 *frame_buffer;
+
+ status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
+ frame_index,
+ (void **)&frame_header);
+
+ 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);
+
+ scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
+ frame_header,
+ frame_buffer);
+ }
+
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+}
+
+static enum sci_status scic_sds_stp_request_udma_await_tc_completion_tc_completion_handler(
+ 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE);
+ }
+ 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 scic_sds_stp_request_udma_await_d2h_reg_fis_frame_handler(
+ struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+
+ /* 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 status;
+}
+
+enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
+ u32 len,
+ enum dma_data_direction dir)
+{
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @sci_req:
+ * @completion_code:
+ *
+ * This method processes a TC completion. The expected TC completion is for
+ * the transmission of the H2D register FIS containing the SATA/STP non-data
+ * request. This method always successfully processes the TC completion.
+ * SCI_SUCCESS This value is always returned.
+ */
+static enum sci_status scic_sds_stp_request_soft_reset_await_h2d_asserted_tc_completion_handler(
+ struct scic_sds_request *sci_req,
+ u32 completion_code)
+{
+ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+ case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+ scic_sds_request_set_status(
+ sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
+ );
+
+ sci_base_state_machine_change_state(
+ &sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE
+ );
+ break;
+
+ default:
+ /*
+ * All other completion status cause the IO to be complete. If a NAK
+ * was received, then it is up to the user to retry the request. */
+ scic_sds_request_set_status(
+ sci_req,
+ SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
+ SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
+ );
sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ &sci_req->state_machine, SCI_BASE_REQUEST_STATE_COMPLETED);
+ break;
}
- scic_sds_controller_release_frame(sci_req->owning_controller,
- frame_index);
-
return SCI_SUCCESS;
}
/**
- * This method processes the completions transport layer (TL) status to
- * determine if the SMP request was sent successfully. If the SMP request
- * was sent successfully, then the state for the SMP request transits to
- * waiting for a response frame.
- * @sci_req: This parameter specifies the request for which the TC
- * completion was received.
- * @completion_code: This parameter indicates the completion status information
- * for the TC.
*
- * Indicate if the tc completion handler was successful. SCI_SUCCESS currently
- * this method always returns success.
+ * @sci_req:
+ * @completion_code:
+ *
+ * This method processes a TC completion. The expected TC completion is for
+ * the transmission of the H2D register FIS containing the SATA/STP non-data
+ * request. This method always successfully processes the TC completion.
+ * SCI_SUCCESS This value is always returned.
*/
-static enum sci_status scic_sds_smp_request_await_tc_completion_tc_completion_handler(
+static enum sci_status scic_sds_stp_request_soft_reset_await_h2d_diagnostic_tc_completion_handler(
struct scic_sds_request *sci_req,
u32 completion_code)
{
switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
+ 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE);
break;
default:
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
);
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
+ sci_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
break;
}
return SCI_SUCCESS;
}
+/**
+ *
+ * @request: This parameter specifies the request for which a frame has been
+ * received.
+ * @frame_index: This parameter specifies the index of the frame that has been
+ * received.
+ *
+ * This method processes frames received from the target while waiting for a
+ * device to host register FIS. If a non-register FIS is received during this
+ * time, it is treated as a protocol violation from an IO perspective. Indicate
+ * if the received frame was processed successfully.
+ */
+static enum sci_status scic_sds_stp_request_soft_reset_await_d2h_frame_handler(
+ struct scic_sds_request *sci_req,
+ u32 frame_index)
+{
+ enum sci_status status;
+ struct dev_to_host_fis *frame_header;
+ u32 *frame_buffer;
+ struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
+ struct scic_sds_controller *scic = sci_req->owning_controller;
+
+ 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_base_state_machine_change_state(&sci_req->state_machine,
+ SCI_BASE_REQUEST_STATE_COMPLETED);
+
+ /* Frame has been decoded return it to the controller */
+ scic_sds_controller_release_frame(scic, frame_index);
+
+ return status;
+}
+
static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = {
[SCI_BASE_REQUEST_STATE_INITIAL] = { },
[SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
.abort_handler = scic_sds_request_started_state_abort_handler,
.tc_completion_handler = scic_sds_smp_request_await_tc_completion_tc_completion_handler,
},
+ [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_udma_await_tc_completion_tc_completion_handler,
+ .frame_handler = scic_sds_stp_request_udma_general_frame_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .frame_handler = scic_sds_stp_request_udma_await_d2h_reg_fis_frame_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_non_data_await_h2d_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .frame_handler = scic_sds_stp_request_non_data_await_d2h_frame_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_pio_await_h2d_completion_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .frame_handler = scic_sds_stp_request_pio_await_frame_frame_handler
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .event_handler = scic_sds_stp_request_pio_data_in_await_data_event_handler,
+ .frame_handler = scic_sds_stp_request_pio_data_in_await_data_frame_handler
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_pio_data_out_await_data_transmit_completion_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_soft_reset_await_h2d_asserted_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .tc_completion_handler = scic_sds_stp_request_soft_reset_await_h2d_diagnostic_tc_completion_handler,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE] = {
+ .abort_handler = scic_sds_request_started_state_abort_handler,
+ .frame_handler = scic_sds_stp_request_soft_reset_await_d2h_frame_handler,
+ },
[SCI_BASE_REQUEST_STATE_COMPLETED] = {
.complete_handler = scic_sds_request_completed_state_complete_handler,
},
);
}
-/**
- * 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)
{
struct scic_sds_request *sci_req = object;
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);
+ } 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_base_state_machine_change_state(sm,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE);
} else if (task && task->task_proto == SAS_PROTOCOL_SMP) {
sci_base_state_machine_change_state(sm,
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE);
+ } else if (task && sas_protocol_ata(task->task_proto) &&
+ !task->ata_task.use_ncq) {
+ u32 state;
+
+ if (task->data_dir == DMA_NONE)
+ state = SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE;
+ else if (task->ata_task.dma_xfer)
+ state = SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE;
+ else /* PIO */
+ state = SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE;
+
+ sci_base_state_machine_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
);
}
+static void scic_sds_stp_request_started_non_data_await_h2d_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE
+ );
+
+ scic_sds_remote_device_set_working_request(
+ sci_req->target_device, sci_req
+ );
+}
+
+static void scic_sds_stp_request_started_non_data_await_d2h_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE
+ );
+}
+
+
+
+static void scic_sds_stp_request_started_pio_await_h2d_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE
+ );
+
+ scic_sds_remote_device_set_working_request(
+ sci_req->target_device, sci_req);
+}
+
+static void scic_sds_stp_request_started_pio_await_frame_enter(void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
+ );
+}
+
+static void scic_sds_stp_request_started_pio_data_in_await_data_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE
+ );
+}
+
+static void scic_sds_stp_request_started_pio_data_out_transmit_data_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE
+ );
+}
+
+
+
+static void scic_sds_stp_request_started_udma_await_tc_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE
+ );
+}
+
+/**
+ *
+ *
+ * This state is entered when there is an TC completion failure. The hardware
+ * received an unexpected condition while processing the IO request and now
+ * will UF the D2H register FIS to complete the IO.
+ */
+static void scic_sds_stp_request_started_udma_await_d2h_reg_fis_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE
+ );
+}
+
+
+
+static void scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE
+ );
+
+ scic_sds_remote_device_set_working_request(
+ sci_req->target_device, sci_req
+ );
+}
+
+static void scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+ struct scu_task_context *task_context;
+ struct host_to_dev_fis *h2d_fis;
+ enum sci_status status;
+
+ /* Clear the SRST bit */
+ h2d_fis = &sci_req->stp.cmd;
+ h2d_fis->control = 0;
+
+ /* Clear the TC control bit */
+ task_context = scic_sds_controller_get_task_context_buffer(
+ sci_req->owning_controller, sci_req->io_tag);
+ task_context->control_frame = 0;
+
+ status = scic_controller_continue_io(sci_req);
+ if (status == SCI_SUCCESS) {
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE
+ );
+ }
+}
+
+static void scic_sds_stp_request_started_soft_reset_await_d2h_response_enter(
+ void *object)
+{
+ struct scic_sds_request *sci_req = object;
+
+ SET_STATE_HANDLER(
+ sci_req,
+ scic_sds_request_state_handler_table,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE
+ );
+}
+
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_STARTED] = {
.enter_state = scic_sds_request_started_state_enter,
- .exit_state = scic_sds_request_started_state_exit
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_non_data_await_h2d_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_non_data_await_d2h_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_pio_await_h2d_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_pio_await_frame_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_pio_data_in_await_data_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_pio_data_out_transmit_data_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_udma_await_tc_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_udma_await_d2h_reg_fis_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter,
+ },
+ [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE] = {
+ .enter_state = scic_sds_stp_request_started_soft_reset_await_d2h_response_enter,
},
[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->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);
*isci_request = request;
return ret;
}
-
-
-
#include "isci.h"
#include "host.h"
#include "scu_task_context.h"
-#include "stp_request.h"
/**
* struct isci_request_status - This enum defines the possible states of an I/O
SCIC_STP_PROTOCOL
}; /* XXX remove me, use sas_task.{dev|task_proto} instead */;
+struct scic_sds_stp_request {
+ union {
+ u32 ncq;
+
+ u32 udma;
+
+ struct scic_sds_stp_pio_request {
+ /**
+ * Total transfer for the entire PIO request recorded at request constuction
+ * time.
+ *
+ * @todo Should we just decrement this value for each byte of data transitted
+ * or received to elemenate the current_transfer_bytes field?
+ */
+ u32 total_transfer_bytes;
+
+ /**
+ * Total number of bytes received/transmitted in data frames since the start
+ * of the IO request. At the end of the IO request this should equal the
+ * total_transfer_bytes.
+ */
+ u32 current_transfer_bytes;
+
+ /**
+ * The number of bytes requested in the in the PIO setup.
+ */
+ u32 pio_transfer_bytes;
+
+ /**
+ * PIO Setup ending status value to tell us if we need to wait for another FIS
+ * or if the transfer is complete. On the receipt of a D2H FIS this will be
+ * the status field of that FIS.
+ */
+ u8 ending_status;
+
+ /**
+ * On receipt of a D2H FIS this will be the ending error field if the
+ * ending_status has the SATA_STATUS_ERR bit set.
+ */
+ u8 ending_error;
+
+ struct scic_sds_request_pio_sgl {
+ struct scu_sgl_element_pair *sgl_pair;
+ u8 sgl_set;
+ u32 sgl_offset;
+ } request_current;
+ } pio;
+
+ struct {
+ /**
+ * The number of bytes requested in the PIO setup before CDB data frame.
+ */
+ u32 device_preferred_cdb_length;
+ } packet;
+ } type;
+};
+
struct scic_sds_request {
/**
* This field contains the information for the base request state machine.
*/
bool is_task_management_request;
- /**
- * This field indicates that this request contains an initialized started
- * substate machine.
- */
- bool has_started_substate_machine;
-
/**
* This field is a pointer to the stored rx frame data. It is used in STP
* internal requests and SMP response frames. If this field is non-NULL the
*/
u32 saved_rx_frame_index;
- /**
- * This field specifies the data necessary to manage the sub-state
- * machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
- */
- struct sci_base_state_machine started_substate_machine;
-
/**
* This field specifies the current state handlers in place for this
* IO Request object. This field is updated each time the request
*/
SCI_BASE_REQUEST_STATE_STARTED,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE,
+ SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE,
+
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE,
+ SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE,
+
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE,
+ SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE,
+
+ /**
+ * While in this state the IO request object is waiting for the TC completion
+ * notification for the H2D Register FIS
+ */
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
+
+ /**
+ * While in this state the IO request object is waiting for either a PIO Setup
+ * FIS or a D2H register FIS. The type of frame received is based on the
+ * result of the prior frame and line conditions.
+ */
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
+
+ /**
+ * While in this state the IO request object is waiting for a DATA frame from
+ * the device.
+ */
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
+
+ /**
+ * While in this state the IO request object is waiting to transmit the next data
+ * frame to the device.
+ */
+ SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
+
/**
* The AWAIT_TC_COMPLETION sub-state indicates that the started raw
* task management request is waiting for the transmission of the
};
-extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
-
/**
* scic_sds_request_get_controller() -
*
(scu_sge).address_modifier = 0; \
}
-void scic_sds_request_build_sgl(struct scic_sds_request *sci_req);
enum sci_status scic_sds_request_start(struct scic_sds_request *sci_req);
enum sci_status scic_sds_io_request_terminate(struct scic_sds_request *sci_req);
enum sci_status scic_sds_io_request_event_handler(struct scic_sds_request *sci_req,
enum sci_status scic_sds_io_request_frame_handler(struct scic_sds_request *sci_req,
u32 frame_index);
enum sci_status scic_sds_task_request_terminate(struct scic_sds_request *sci_req);
-enum sci_status scic_sds_request_started_state_abort_handler(struct scic_sds_request *sci_req);
-
/* XXX open code in caller */
static inline void *scic_request_get_virt_addr(struct scic_sds_request *sci_req,
struct scic_sds_request *sci_req);
enum sci_status scic_task_request_construct_ssp(struct scic_sds_request *sci_req);
enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
+ u32 transfer_length,
+ enum dma_data_direction dir);
void scic_stp_io_request_set_ncq_tag(struct scic_sds_request *sci_req, u16 ncq_tag);
void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
#endif /* !defined(_ISCI_REQUEST_H_) */
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <scsi/sas.h>
-#include "sas.h"
-#include "state_machine.h"
-#include "remote_device.h"
-#include "stp_request.h"
-#include "unsolicited_frame_control.h"
-#include "scu_completion_codes.h"
-#include "scu_event_codes.h"
-#include "scu_task_context.h"
-#include "request.h"
-
-/**
- * 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.
- *
- * 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_controller *controller;
- struct scic_sds_remote_device *target_device;
- struct scic_sds_port *target_port;
-
- controller = scic_sds_request_get_controller(sci_req);
- 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;
-
- 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(
- 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(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(
- controller) <<
- SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
- (scic_sds_port_get_index(target_port) <<
- SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
- }
-
- /*
- * 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;
-}
-
-/**
- *
- * @sci_req:
- *
- * This method will perform any general sata request construction. What part of
- * SATA IO request construction is general? none
- */
-static void scic_sds_stp_non_ncq_request_construct(
- struct scic_sds_request *sci_req)
-{
- sci_req->has_started_substate_machine = true;
-}
-
-/**
- *
- * @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->task_context_buffer;
-
- /* 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;
- }
-}
-
-/**
- *
- * @sci_req: This parameter specifies the request to be constructed.
- *
- * This method will construct the STP UDMA request and its associated TC data.
- * This method returns an indication as to whether the construction was
- * successful. SCI_SUCCESS Currently this method always returns this value.
- */
-enum sci_status scic_sds_stp_ncq_request_construct(struct scic_sds_request *sci_req,
- u32 len,
- enum dma_data_direction dir)
-{
- scic_sds_stp_optimized_request_construct(sci_req,
- SCU_TASK_TYPE_FPDMAQ_READ,
- len, dir);
- return SCI_SUCCESS;
-}
-
-/**
- * scu_stp_raw_request_construct_task_context -
- * @sci_req: This parameter specifies the STP request object for which to
- * construct a RAW command frame task context.
- * @task_context: This parameter specifies the SCU specific task context buffer
- * to construct.
- *
- * This method performs the operations common to all SATA/STP requests
- * utilizing the raw frame method. none
- */
-static void scu_stp_raw_request_construct_task_context(
- struct scic_sds_stp_request *stp_req,
- struct scu_task_context *task_context)
-{
- struct scic_sds_request *sci_req = to_sci_req(stp_req);
-
- 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);
-}
-
-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->task_context_buffer->type.stp.ncq_tag = ncq_tag;
-}
-
-/**
- *
- * @sci_req:
- *
- * Get the next SGL element from the request. - Check on which SGL element pair
- * we are working - if working on SLG pair element A - advance to element B -
- * else - check to see if there are more SGL element pairs for this IO request
- * - if there are more SGL element pairs - advance to the next pair and return
- * element A struct scu_sgl_element*
- */
-static struct scu_sgl_element *scic_sds_stp_request_pio_get_next_sgl(struct scic_sds_stp_request *stp_req)
-{
- struct scu_sgl_element *current_sgl;
- 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;
-
- if (pio_sgl->sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
- if (pio_sgl->sgl_pair->B.address_lower == 0 &&
- pio_sgl->sgl_pair->B.address_upper == 0) {
- current_sgl = NULL;
- } else {
- pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_B;
- current_sgl = &pio_sgl->sgl_pair->B;
- }
- } else {
- if (pio_sgl->sgl_pair->next_pair_lower == 0 &&
- pio_sgl->sgl_pair->next_pair_upper == 0) {
- current_sgl = NULL;
- } else {
- u64 phys_addr;
-
- phys_addr = pio_sgl->sgl_pair->next_pair_upper;
- phys_addr <<= 32;
- phys_addr |= pio_sgl->sgl_pair->next_pair_lower;
-
- pio_sgl->sgl_pair = scic_request_get_virt_addr(sci_req, phys_addr);
- pio_sgl->sgl_set = SCU_SGL_ELEMENT_PAIR_A;
- current_sgl = &pio_sgl->sgl_pair->A;
- }
- }
-
- return current_sgl;
-}
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * This method processes a TC completion. The expected TC completion is for
- * the transmission of the H2D register FIS containing the SATA/STP non-data
- * request. This method always successfully processes the TC completion.
- * SCI_SUCCESS This value is always returned.
- */
-static enum sci_status scic_sds_stp_request_non_data_await_h2d_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine, SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @request: This parameter specifies the request for which a frame has been
- * received.
- * @frame_index: This parameter specifies the index of the frame that has been
- * received.
- *
- * This method processes frames received from the target while waiting for a
- * device to host register FIS. If a non-register FIS is received during this
- * time, it is treated as a protocol violation from an IO perspective. Indicate
- * if the received frame was processed successfully.
- */
-static enum sci_status scic_sds_stp_request_non_data_await_d2h_frame_handler(
- struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
- struct dev_to_host_fis *frame_header;
- u32 *frame_buffer;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scic_sds_controller *scic = sci_req->owning_controller;
-
- 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(sci_req->owning_controller),
- "%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_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-
- /* Frame has been decoded return it to the controller */
- scic_sds_controller_release_frame(scic, frame_index);
-
- return status;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_non_data_substate_handler_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_non_data_await_h2d_tc_completion_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .frame_handler = scic_sds_stp_request_non_data_await_d2h_frame_handler,
- }
-};
-
-static void scic_sds_stp_request_started_non_data_await_h2d_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_non_data_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE
- );
-
- scic_sds_remote_device_set_working_request(
- sci_req->target_device, sci_req
- );
-}
-
-static void scic_sds_stp_request_started_non_data_await_d2h_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_non_data_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE
- );
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct sci_base_state scic_sds_stp_request_started_non_data_substate_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_non_data_await_h2d_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_non_data_await_d2h_enter,
- },
-};
-
-enum sci_status scic_sds_stp_non_data_request_construct(struct scic_sds_request *sci_req)
-{
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
-
- scic_sds_stp_non_ncq_request_construct(sci_req);
-
- /* Build the STP task context structure */
- scu_stp_raw_request_construct_task_context(stp_req, sci_req->task_context_buffer);
-
- sci_base_state_machine_construct(&sci_req->started_substate_machine,
- sci_req,
- scic_sds_stp_request_started_non_data_substate_table,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE);
-
- return 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_stp_request_pio_data_out_trasmit_data_frame(
- struct scic_sds_request *sci_req,
- u32 length)
-{
- struct scic_sds_controller *scic = sci_req->owning_controller;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scu_task_context *task_context;
- 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
- */
- task_context = scic_sds_controller_get_task_context_buffer(scic,
- sci_req->io_tag);
-
- if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A)
- current_sgl = &stp_req->type.pio.request_current.sgl_pair->A;
- else
- current_sgl = &stp_req->type.pio.request_current.sgl_pair->B;
-
- /* 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;
-
- /* send the new TC out. */
- return scic_controller_continue_io(sci_req);
-}
-
-static enum sci_status scic_sds_stp_request_pio_data_out_transmit_data(struct scic_sds_request *sci_req)
-{
-
- 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;
-
- sgl_offset = stp_req->type.pio.request_current.sgl_offset;
-
- if (stp_req->type.pio.request_current.sgl_set == SCU_SGL_ELEMENT_PAIR_A) {
- current_sgl = &(stp_req->type.pio.request_current.sgl_pair->A);
- remaining_bytes_in_current_sgl = stp_req->type.pio.request_current.sgl_pair->A.length - sgl_offset;
- } else {
- current_sgl = &(stp_req->type.pio.request_current.sgl_pair->B);
- remaining_bytes_in_current_sgl = stp_req->type.pio.request_current.sgl_pair->B.length - sgl_offset;
- }
-
-
- 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;
-
- /* update the current sgl, sgl_offset and save for future */
- current_sgl = scic_sds_stp_request_pio_get_next_sgl(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;
- }
- }
- }
-
- if (status == SCI_SUCCESS) {
- stp_req->type.pio.request_current.sgl_offset = sgl_offset;
- }
-
- return status;
-}
-
-/**
- *
- * @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_stp_request_pio_data_in_copy_data_buffer(struct scic_sds_stp_request *stp_req,
- u8 *data_buf, u32 len)
-{
- 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;
-}
-
-/**
- *
- * @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_stp_request_pio_data_in_copy_data(
- struct scic_sds_stp_request *sci_req,
- u8 *data_buffer)
-{
- enum sci_status status;
-
- /*
- * 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;
-}
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * enum sci_status
- */
-static enum sci_status scic_sds_stp_request_pio_await_h2d_completion_tc_completion_handler(
- 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_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED
- );
- break;
- }
-
- return status;
-}
-
-static enum sci_status scic_sds_stp_request_pio_await_frame_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;
- 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;
- enum sci_status status;
- 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_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE);
- } 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_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE);
- }
- break;
- case FIS_SETDEVBITS:
- sci_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE);
- 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_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- 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;
-}
-
-static enum sci_status scic_sds_stp_request_pio_data_in_await_data_frame_handler(struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
- struct dev_to_host_fis *frame_header;
- struct sata_fis_data *frame_buffer;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scic_sds_controller *scic = sci_req->owning_controller;
-
- 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) {
- if (stp_req->type.pio.request_current.sgl_pair == NULL) {
- 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_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- } else {
- sci_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE);
- }
- } else {
- 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_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-
- /* Frame is decoded return it to the controller */
- scic_sds_controller_release_frame(scic, frame_index);
- }
-
- return status;
-}
-
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * enum sci_status
- */
-static enum sci_status scic_sds_stp_request_pio_data_out_await_data_transmit_completion_tc_completion_handler(
-
- 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 SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_FRAME_SUBSTATE
- * and wait for PIO_SETUP fis / or D2H REg fis. */
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
- );
- }
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED
- );
- break;
- }
-
- return status;
-}
-
-/**
- *
- * @request: This is the request which is receiving the event.
- * @event_code: This is the event code that the request on which the request is
- * expected to take action.
- *
- * This method will handle any link layer events while waiting for the data
- * frame. enum sci_status SCI_SUCCESS SCI_FAILURE
- */
-static enum sci_status scic_sds_stp_request_pio_data_in_await_data_event_handler(
- struct scic_sds_request *request,
- u32 event_code)
-{
- enum sci_status status;
-
- 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_base_state_machine_change_state(
- &request->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
- );
-
- status = SCI_SUCCESS;
- break;
-
- default:
- dev_err(scic_to_dev(request->owning_controller),
- "%s: SCIC PIO Request 0x%p received unexpected "
- "event 0x%08x\n",
- __func__, request, event_code);
-
- /* / @todo Should we fail the PIO request when we get an unexpected event? */
- status = SCI_FAILURE;
- break;
- }
-
- return status;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_pio_substate_handler_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_pio_await_h2d_completion_tc_completion_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .frame_handler = scic_sds_stp_request_pio_await_frame_frame_handler
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .event_handler = scic_sds_stp_request_pio_data_in_await_data_event_handler,
- .frame_handler = scic_sds_stp_request_pio_data_in_await_data_frame_handler
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_pio_data_out_await_data_transmit_completion_tc_completion_handler,
- }
-};
-
-static void scic_sds_stp_request_started_pio_await_h2d_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_pio_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE
- );
-
- scic_sds_remote_device_set_working_request(
- sci_req->target_device, sci_req);
-}
-
-static void scic_sds_stp_request_started_pio_await_frame_enter(void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_pio_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE
- );
-}
-
-static void scic_sds_stp_request_started_pio_data_in_await_data_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_pio_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE
- );
-}
-
-static void scic_sds_stp_request_started_pio_data_out_transmit_data_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_pio_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE
- );
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct sci_base_state scic_sds_stp_request_started_pio_substate_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_pio_await_h2d_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_pio_await_frame_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_pio_data_in_await_data_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_pio_data_out_transmit_data_enter,
- }
-};
-
-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;
-
- scic_sds_stp_non_ncq_request_construct(sci_req);
-
- scu_stp_raw_request_construct_task_context(stp_req,
- sci_req->task_context_buffer);
-
- 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);
- /* Since the IO request copy of the TC contains the same data as
- * the actual TC this pointer is vaild for either.
- */
- pio->request_current.sgl_pair = &sci_req->task_context_buffer->sgl_pair_ab;
- } else {
- /* The user does not want the data copied to the SGL buffer location */
- pio->request_current.sgl_pair = NULL;
- }
-
- sci_base_state_machine_construct(&sci_req->started_substate_machine,
- sci_req,
- scic_sds_stp_request_started_pio_substate_table,
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE);
-
- return SCI_SUCCESS;
-}
-
-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_base_state_machine_change_state(&request->state_machine,
- SCI_BASE_REQUEST_STATE_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;
- u32 *frame_buffer;
-
- status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control,
- frame_index,
- (void **)&frame_header);
-
- 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);
-
- scic_sds_controller_copy_sata_response(&sci_req->stp.rsp,
- frame_header,
- frame_buffer);
- }
-
- scic_sds_controller_release_frame(scic, frame_index);
-
- return status;
-}
-
-static enum sci_status scic_sds_stp_request_udma_await_tc_completion_tc_completion_handler(
- 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_base_state_machine_change_state(&sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE);
- }
- 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 scic_sds_stp_request_udma_await_d2h_reg_fis_frame_handler(
- struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
-
- /* 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 status;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_udma_substate_handler_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_udma_await_tc_completion_tc_completion_handler,
- .frame_handler = scic_sds_stp_request_udma_general_frame_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .frame_handler = scic_sds_stp_request_udma_await_d2h_reg_fis_frame_handler,
- },
-};
-
-static void scic_sds_stp_request_started_udma_await_tc_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_udma_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE
- );
-}
-
-/**
- *
- *
- * This state is entered when there is an TC completion failure. The hardware
- * received an unexpected condition while processing the IO request and now
- * will UF the D2H register FIS to complete the IO.
- */
-static void scic_sds_stp_request_started_udma_await_d2h_reg_fis_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_udma_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE
- );
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct sci_base_state scic_sds_stp_request_started_udma_substate_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_udma_await_tc_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_udma_await_d2h_reg_fis_enter,
- },
-};
-
-enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
- u32 len,
- enum dma_data_direction dir)
-{
- scic_sds_stp_non_ncq_request_construct(sci_req);
-
- scic_sds_stp_optimized_request_construct(sci_req, SCU_TASK_TYPE_DMA_IN,
- len, dir);
-
- sci_base_state_machine_construct(
- &sci_req->started_substate_machine,
- sci_req,
- scic_sds_stp_request_started_udma_substate_table,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE
- );
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * This method processes a TC completion. The expected TC completion is for
- * the transmission of the H2D register FIS containing the SATA/STP non-data
- * request. This method always successfully processes the TC completion.
- * SCI_SUCCESS This value is always returned.
- */
-static enum sci_status scic_sds_stp_request_soft_reset_await_h2d_asserted_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(
- &sci_req->state_machine, SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @sci_req:
- * @completion_code:
- *
- * This method processes a TC completion. The expected TC completion is for
- * the transmission of the H2D register FIS containing the SATA/STP non-data
- * request. This method always successfully processes the TC completion.
- * SCI_SUCCESS This value is always returned.
- */
-static enum sci_status scic_sds_stp_request_soft_reset_await_h2d_diagnostic_tc_completion_handler(
- struct scic_sds_request *sci_req,
- u32 completion_code)
-{
- switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
- case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
- scic_sds_request_set_status(
- sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS
- );
-
- sci_base_state_machine_change_state(
- &sci_req->started_substate_machine,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE
- );
- break;
-
- default:
- /*
- * All other completion status cause the IO to be complete. If a NAK
- * was received, then it is up to the user to retry the request. */
- scic_sds_request_set_status(
- sci_req,
- SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
- SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
- );
-
- sci_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
- break;
- }
-
- return SCI_SUCCESS;
-}
-
-/**
- *
- * @request: This parameter specifies the request for which a frame has been
- * received.
- * @frame_index: This parameter specifies the index of the frame that has been
- * received.
- *
- * This method processes frames received from the target while waiting for a
- * device to host register FIS. If a non-register FIS is received during this
- * time, it is treated as a protocol violation from an IO perspective. Indicate
- * if the received frame was processed successfully.
- */
-static enum sci_status scic_sds_stp_request_soft_reset_await_d2h_frame_handler(
- struct scic_sds_request *sci_req,
- u32 frame_index)
-{
- enum sci_status status;
- struct dev_to_host_fis *frame_header;
- u32 *frame_buffer;
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
- struct scic_sds_controller *scic = sci_req->owning_controller;
-
- 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_base_state_machine_change_state(&sci_req->state_machine,
- SCI_BASE_REQUEST_STATE_COMPLETED);
-
- /* Frame has been decoded return it to the controller */
- scic_sds_controller_release_frame(scic, frame_index);
-
- return status;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_soft_reset_substate_handler_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_soft_reset_await_h2d_asserted_tc_completion_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .tc_completion_handler = scic_sds_stp_request_soft_reset_await_h2d_diagnostic_tc_completion_handler,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE] = {
- .abort_handler = scic_sds_request_started_state_abort_handler,
- .frame_handler = scic_sds_stp_request_soft_reset_await_d2h_frame_handler,
- },
-};
-
-static void scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_soft_reset_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE
- );
-
- scic_sds_remote_device_set_working_request(
- sci_req->target_device, sci_req
- );
-}
-
-static void scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
- struct scu_task_context *task_context;
- struct host_to_dev_fis *h2d_fis;
- enum sci_status status;
-
- /* Clear the SRST bit */
- h2d_fis = &sci_req->stp.cmd;
- h2d_fis->control = 0;
-
- /* Clear the TC control bit */
- task_context = scic_sds_controller_get_task_context_buffer(
- sci_req->owning_controller, sci_req->io_tag);
- task_context->control_frame = 0;
-
- status = scic_controller_continue_io(sci_req);
- if (status == SCI_SUCCESS) {
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_soft_reset_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE
- );
- }
-}
-
-static void scic_sds_stp_request_started_soft_reset_await_d2h_response_enter(
- void *object)
-{
- struct scic_sds_request *sci_req = object;
-
- SET_STATE_HANDLER(
- sci_req,
- scic_sds_stp_request_started_soft_reset_substate_handler_table,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE
- );
-}
-
-static const struct sci_base_state scic_sds_stp_request_started_soft_reset_substate_table[] = {
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_asserted_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter,
- },
- [SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE] = {
- .enter_state = scic_sds_stp_request_started_soft_reset_await_d2h_response_enter,
- },
-};
-
-enum sci_status scic_sds_stp_soft_reset_request_construct(struct scic_sds_request *sci_req)
-{
- struct scic_sds_stp_request *stp_req = &sci_req->stp.req;
-
- scic_sds_stp_non_ncq_request_construct(sci_req);
-
- /* Build the STP task context structure */
- scu_stp_raw_request_construct_task_context(stp_req, sci_req->task_context_buffer);
-
- sci_base_state_machine_construct(&sci_req->started_substate_machine,
- sci_req,
- scic_sds_stp_request_started_soft_reset_substate_table,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE);
-
- return SCI_SUCCESS;
-}
+++ /dev/null
-/*
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _SCIC_SDS_STP_REQUEST_T_
-#define _SCIC_SDS_STP_REQUEST_T_
-
-#include <linux/dma-mapping.h>
-#include <scsi/sas.h>
-
-struct scic_sds_stp_request {
- union {
- u32 ncq;
-
- u32 udma;
-
- struct scic_sds_stp_pio_request {
- /**
- * Total transfer for the entire PIO request recorded at request constuction
- * time.
- *
- * @todo Should we just decrement this value for each byte of data transitted
- * or received to elemenate the current_transfer_bytes field?
- */
- u32 total_transfer_bytes;
-
- /**
- * Total number of bytes received/transmitted in data frames since the start
- * of the IO request. At the end of the IO request this should equal the
- * total_transfer_bytes.
- */
- u32 current_transfer_bytes;
-
- /**
- * The number of bytes requested in the in the PIO setup.
- */
- u32 pio_transfer_bytes;
-
- /**
- * PIO Setup ending status value to tell us if we need to wait for another FIS
- * or if the transfer is complete. On the receipt of a D2H FIS this will be
- * the status field of that FIS.
- */
- u8 ending_status;
-
- /**
- * On receipt of a D2H FIS this will be the ending error field if the
- * ending_status has the SATA_STATUS_ERR bit set.
- */
- u8 ending_error;
-
- struct scic_sds_request_pio_sgl {
- struct scu_sgl_element_pair *sgl_pair;
- u8 sgl_set;
- u32 sgl_offset;
- } request_current;
- } pio;
-
- struct {
- /**
- * The number of bytes requested in the PIO setup before CDB data frame.
- */
- u32 device_preferred_cdb_length;
- } packet;
- } type;
-};
-
-/**
- * enum scic_sds_stp_request_started_udma_substates - This enumeration depicts
- * the various sub-states associated with a SATA/STP UDMA protocol operation.
- *
- *
- */
-enum scic_sds_stp_request_started_udma_substates {
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE,
- SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE,
-};
-
-/**
- * enum scic_sds_stp_request_started_non_data_substates - This enumeration
- * depicts the various sub-states associated with a SATA/STP non-data
- * protocol operation.
- *
- *
- */
-enum scic_sds_stp_request_started_non_data_substates {
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE,
- SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE,
-};
-
-/**
- * enum scic_sds_stp_request_started_soft_reset_substates - THis enumeration
- * depicts the various sub-states associated with a SATA/STP soft reset
- * operation.
- *
- *
- */
-enum scic_sds_stp_request_started_soft_reset_substates {
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE,
- SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE,
-};
-
-/* This is the enumeration of the SATA PIO DATA IN started substate machine. */
-enum _scic_sds_stp_request_started_pio_substates {
- /**
- * While in this state the IO request object is waiting for the TC completion
- * notification for the H2D Register FIS
- */
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
-
- /**
- * While in this state the IO request object is waiting for either a PIO Setup
- * FIS or a D2H register FIS. The type of frame received is based on the
- * result of the prior frame and line conditions.
- */
- SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
-
- /**
- * While in this state the IO request object is waiting for a DATA frame from
- * the device.
- */
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
-
- /**
- * While in this state the IO request object is waiting to transmit the next data
- * frame to the device.
- */
- SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
-};
-
-struct scic_sds_request;
-
-enum sci_status scic_sds_stp_pio_request_construct(struct scic_sds_request *sci_req,
- bool copy_rx_frame);
-enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
- u32 transfer_length,
- enum dma_data_direction dir);
-enum sci_status scic_sds_stp_non_data_request_construct(struct scic_sds_request *sci_req);
-enum sci_status scic_sds_stp_soft_reset_request_construct(struct scic_sds_request *sci_req);
-enum sci_status scic_sds_stp_ncq_request_construct(struct scic_sds_request *sci_req,
- u32 transfer_length,
- enum dma_data_direction dir);
-#endif /* _SCIC_SDS_STP_REQUEST_T_ */
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff