X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fscsi%2Fisci%2Fcore%2Fscic_sds_request.c;h=50dd19bba3db2fc4cf32bae12db733b247b27eef;hb=67ea838d17acdad3331aeae848683c768df96aaa;hp=7b9ce1e878a7294af8507b4d71846e3376a4459d;hpb=7392d27580df2d14b5c3b1a1d7989c06457a819d;p=pandora-kernel.git diff --git a/drivers/scsi/isci/core/scic_sds_request.c b/drivers/scsi/isci/core/scic_sds_request.c index 7b9ce1e878a7..50dd19bba3db 100644 --- a/drivers/scsi/isci/core/scic_sds_request.c +++ b/drivers/scsi/isci/core/scic_sds_request.c @@ -53,19 +53,13 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ - -#include "intel_sas.h" -#include "intel_sata.h" -#include "intel_sat.h" -#include "sci_base_request.h" +#include #include "scic_controller.h" #include "scic_io_request.h" -#include "scic_remote_device.h" #include "scic_sds_controller.h" -#include "scic_sds_controller_registers.h" -#include "scic_sds_pci.h" +#include "scu_registers.h" #include "scic_sds_port.h" -#include "scic_sds_remote_device.h" +#include "remote_device.h" #include "scic_sds_request.h" #include "scic_sds_smp_request.h" #include "scic_sds_stp_request.h" @@ -76,10 +70,6 @@ #include "scu_constants.h" #include "scu_task_context.h" -#if !defined(DISABLE_ATAPI) -#include "scic_sds_stp_packet_request.h" -#endif - /* * **************************************************************************** * * SCIC SDS IO REQUEST CONSTANTS @@ -93,142 +83,9 @@ #define SCIC_SDS_IO_REQUEST_MINIMUM_TIMER_COUNT (0) #define SCIC_SDS_IO_REQUEST_MAXIMUM_TIMER_COUNT (0) -/* - * **************************************************************************** - * * SCIC SDS IO REQUEST MACROS - * **************************************************************************** */ - -/** - * scic_ssp_io_request_get_object_size() - - * - * This macro returns the sizeof memory required to store the an SSP IO - * request. This does not include the size of the SGL or SCU Task Context - * memory. - */ -#define scic_ssp_io_request_get_object_size() \ - (\ - sizeof(struct sci_ssp_command_iu) \ - + sizeof(struct sci_ssp_response_iu) \ - ) - -/** - * scic_sds_ssp_request_get_command_buffer() - - * - * This macro returns the address of the ssp command buffer in the io request - * memory - */ -#define scic_sds_ssp_request_get_command_buffer(memory) \ - ((struct sci_ssp_command_iu *)(\ - ((char *)(memory)) + sizeof(struct scic_sds_request) \ - )) - -/** - * scic_sds_ssp_request_get_response_buffer() - - * - * This macro returns the address of the ssp response buffer in the io request - * memory - */ -#define scic_sds_ssp_request_get_response_buffer(memory) \ - ((struct sci_ssp_response_iu *)(\ - ((char *)(scic_sds_ssp_request_get_command_buffer(memory))) \ - + sizeof(struct sci_ssp_command_iu) \ - )) - -/** - * scic_sds_ssp_request_get_task_context_buffer() - - * - * This macro returns the address of the task context buffer in the io request - * memory - */ -#define scic_sds_ssp_request_get_task_context_buffer(memory) \ - ((struct scu_task_context *)(\ - ((char *)(scic_sds_ssp_request_get_response_buffer(memory))) \ - + sizeof(struct sci_ssp_response_iu) \ - )) - -/** - * scic_sds_ssp_request_get_sgl_element_buffer() - - * - * This macro returns the address of the sgl elment pairs in the io request - * memory buffer - */ -#define scic_sds_ssp_request_get_sgl_element_buffer(memory) \ - ((struct scu_sgl_element_pair *)(\ - ((char *)(scic_sds_ssp_request_get_task_context_buffer(memory))) \ - + sizeof(struct scu_task_context) \ - )) - - -/** - * scic_ssp_task_request_get_object_size() - - * - * This macro returns the sizeof of memory required to store an SSP Task - * request. This does not include the size of the SCU Task Context memory. - */ -#define scic_ssp_task_request_get_object_size() \ - (\ - sizeof(struct sci_ssp_task_iu) \ - + sizeof(struct sci_ssp_response_iu) \ - ) - -/** - * scic_sds_ssp_task_request_get_command_buffer() - - * - * This macro returns the address of the ssp command buffer in the task request - * memory. Yes its the same as the above macro except for the name. - */ -#define scic_sds_ssp_task_request_get_command_buffer(memory) \ - ((struct sci_ssp_task_iu *)(\ - ((char *)(memory)) + sizeof(struct scic_sds_request) \ - )) - -/** - * scic_sds_ssp_task_request_get_response_buffer() - - * - * This macro returns the address of the ssp response buffer in the task - * request memory. - */ -#define scic_sds_ssp_task_request_get_response_buffer(memory) \ - ((struct sci_ssp_response_iu *)(\ - ((char *)(scic_sds_ssp_task_request_get_command_buffer(memory))) \ - + sizeof(struct sci_ssp_task_iu) \ - )) - -/** - * scic_sds_ssp_task_request_get_task_context_buffer() - - * - * This macro returs the task context buffer for the SSP task request. - */ -#define scic_sds_ssp_task_request_get_task_context_buffer(memory) \ - ((struct scu_task_context *)(\ - ((char *)(scic_sds_ssp_task_request_get_response_buffer(memory))) \ - + sizeof(struct sci_ssp_response_iu) \ - )) - - - -/* - * **************************************************************************** - * * SCIC SDS IO REQUEST PRIVATE METHODS - * **************************************************************************** */ - -/** - * - * - * This method returns the size required to store an SSP IO request object. u32 - */ -static u32 scic_sds_ssp_request_get_object_size(void) -{ - return sizeof(struct scic_sds_request) - + scic_ssp_io_request_get_object_size() - + sizeof(struct scu_task_context) - + CACHE_LINE_SIZE - + sizeof(struct scu_sgl_element_pair) * SCU_MAX_SGL_ELEMENT_PAIRS; -} - /** * This method returns the sgl element pair for the specificed sgl_pair index. - * @this_request: This parameter specifies the IO request for which to retrieve + * @sci_req: This parameter specifies the IO request for which to retrieve * the Scatter-Gather List element pair. * @sgl_pair_index: This parameter specifies the index into the SGL element * pair to be retrieved. @@ -236,12 +93,12 @@ static u32 scic_sds_ssp_request_get_object_size(void) * This method returns a pointer to an struct scu_sgl_element_pair. */ static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair( - struct scic_sds_request *this_request, + struct scic_sds_request *sci_req, u32 sgl_pair_index ) { struct scu_task_context *task_context; - task_context = (struct scu_task_context *)this_request->task_context_buffer; + task_context = (struct scu_task_context *)sci_req->task_context_buffer; if (sgl_pair_index == 0) { return &task_context->sgl_pair_ab; @@ -249,19 +106,18 @@ static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair( return &task_context->sgl_pair_cd; } - return &this_request->sgl_element_pair_buffer[sgl_pair_index - 2]; + return &sci_req->sg_table[sgl_pair_index - 2]; } /** * This function will build the SGL list for an IO request. - * @this_request: This parameter specifies the IO request for which to build + * @sci_req: This parameter specifies the IO request for which to build * the Scatter-Gather List. * */ void scic_sds_request_build_sgl(struct scic_sds_request *sds_request) { - struct isci_request *isci_request = - (struct isci_request *)sci_object_get_association(sds_request); + struct isci_request *isci_request = sci_req_to_ireq(sds_request); struct isci_host *isci_host = isci_request->isci_host; struct sas_task *task = isci_request_access_task(isci_request); struct scatterlist *sg = NULL; @@ -325,165 +181,56 @@ void scic_sds_request_build_sgl(struct scic_sds_request *sds_request) } } -/** - * This method initializes common portions of the io request object. This - * includes construction of the struct sci_base_request parent. - * @the_controller: This parameter specifies the controller for which the - * request is being constructed. - * @the_target: This parameter specifies the remote device for which the - * request is being constructed. - * @io_tag: This parameter specifies the IO tag to be utilized for this - * request. This parameter can be set to SCI_CONTROLLER_INVALID_IO_TAG. - * @user_io_request_object: This parameter specifies the user request object - * for which the request is being constructed. - * @this_request: This parameter specifies the request being constructed. - * - */ -static void scic_sds_general_request_construct( - struct scic_sds_controller *the_controller, - struct scic_sds_remote_device *the_target, - u16 io_tag, - void *user_io_request_object, - struct scic_sds_request *this_request) -{ - sci_base_request_construct( - &this_request->parent, - scic_sds_request_state_table - ); - - this_request->io_tag = io_tag; - this_request->user_request = user_io_request_object; - this_request->owning_controller = the_controller; - this_request->target_device = the_target; - this_request->has_started_substate_machine = false; - this_request->protocol = SCIC_NO_PROTOCOL; - this_request->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX; - this_request->device_sequence = scic_sds_remote_device_get_sequence(the_target); - - this_request->sci_status = SCI_SUCCESS; - this_request->scu_status = 0; - this_request->post_context = 0xFFFFFFFF; - - this_request->is_task_management_request = false; - - if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { - this_request->was_tag_assigned_by_user = false; - this_request->task_context_buffer = NULL; - } else { - this_request->was_tag_assigned_by_user = true; - - this_request->task_context_buffer = - scic_sds_controller_get_task_context_buffer( - this_request->owning_controller, io_tag); - } -} - -/** - * This method build the remainder of the IO request object. - * @this_request: This parameter specifies the request object being constructed. - * - * The scic_sds_general_request_construct() must be called before this call is - * valid. none - */ -static void scic_sds_ssp_io_request_assign_buffers( - struct scic_sds_request *this_request) +static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req) { - this_request->command_buffer = - scic_sds_ssp_request_get_command_buffer(this_request); - this_request->response_buffer = - scic_sds_ssp_request_get_response_buffer(this_request); - this_request->sgl_element_pair_buffer = - scic_sds_ssp_request_get_sgl_element_buffer(this_request); - this_request->sgl_element_pair_buffer = - scic_sds_request_align_sgl_element_buffer(this_request->sgl_element_pair_buffer); - - if (this_request->was_tag_assigned_by_user == false) { - this_request->task_context_buffer = - scic_sds_ssp_request_get_task_context_buffer(this_request); - this_request->task_context_buffer = - scic_sds_request_align_task_context_buffer(this_request->task_context_buffer); - } + if (sci_req->was_tag_assigned_by_user == false) + sci_req->task_context_buffer = &sci_req->tc; } -/** - * This method constructs the SSP Command IU data for this io request object. - * @this_request: This parameter specifies the request object for which the SSP - * command information unit is being built. - * - */ -static void scic_sds_io_request_build_ssp_command_iu( - struct scic_sds_request *sds_request) +static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req) { - struct sci_ssp_command_iu *command_frame; - u32 cdb_length; - u32 *cdb_buffer; - struct isci_request *isci_request = - (struct isci_request *)sci_object_get_association(sds_request); - - command_frame = - (struct sci_ssp_command_iu *)sds_request->command_buffer; - - command_frame->lun_upper = 0; - command_frame->lun_lower = - isci_request_ssp_io_request_get_lun(isci_request); - - ((u32 *)command_frame)[2] = 0; - - cdb_length = isci_request_ssp_io_request_get_cdb_length(isci_request); - cdb_buffer = (u32 *)isci_request_ssp_io_request_get_cdb_address( - isci_request); - - if (cdb_length > 16) { - command_frame->additional_cdb_length = cdb_length - 16; - } - - /* / @todo Is it ok to leave junk at the end of the cdb buffer? */ - scic_word_copy_with_swap( - (u32 *)(&command_frame->cdb), - (u32 *)(cdb_buffer), - (cdb_length + 3) / sizeof(u32) - ); - - command_frame->enable_first_burst = 0; - command_frame->task_priority = - isci_request_ssp_io_request_get_command_priority(isci_request); - command_frame->task_attribute = - isci_request_ssp_io_request_get_task_attribute(isci_request); + struct ssp_cmd_iu *cmd_iu; + struct isci_request *ireq = sci_req_to_ireq(sci_req); + struct sas_task *task = isci_request_access_task(ireq); + + cmd_iu = &sci_req->ssp.cmd; + + memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8); + cmd_iu->add_cdb_len = 0; + cmd_iu->_r_a = 0; + cmd_iu->_r_b = 0; + cmd_iu->en_fburst = 0; /* unsupported */ + cmd_iu->task_prio = task->ssp_task.task_prio; + cmd_iu->task_attr = task->ssp_task.task_attr; + cmd_iu->_r_c = 0; + + sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb, + sizeof(task->ssp_task.cdb) / sizeof(u32)); } - -/** - * This method constructs the SSP Task IU data for this io request object. - * @this_request: - * - */ -static void scic_sds_task_request_build_ssp_task_iu( - struct scic_sds_request *sds_request) +static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req) { - struct sci_ssp_task_iu *command_frame; - struct isci_request *isci_request = - (struct isci_request *)sci_object_get_association(sds_request); + struct ssp_task_iu *task_iu; + struct isci_request *ireq = sci_req_to_ireq(sci_req); + struct sas_task *task = isci_request_access_task(ireq); + struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq); - command_frame = - (struct sci_ssp_task_iu *)sds_request->command_buffer; + task_iu = &sci_req->ssp.tmf; - command_frame->lun_upper = 0; - command_frame->lun_lower = isci_request_ssp_io_request_get_lun( - isci_request); + memset(task_iu, 0, sizeof(struct ssp_task_iu)); - ((u32 *)command_frame)[2] = 0; + memcpy(task_iu->LUN, task->ssp_task.LUN, 8); - command_frame->task_function = - isci_task_ssp_request_get_function(isci_request); - command_frame->task_tag = - isci_task_ssp_request_get_io_tag_to_manage( - isci_request); + task_iu->task_func = isci_tmf->tmf_code; + task_iu->task_tag = + (ireq->ttype == tmf_task) ? + isci_tmf->io_tag : + SCI_CONTROLLER_INVALID_IO_TAG; } - /** * This method is will fill in the SCU Task Context for any type of SSP request. - * @this_request: + * @sci_req: * @task_context: * */ @@ -504,8 +251,7 @@ static void scu_ssp_reqeust_construct_task_context( task_context->abort = 0; task_context->priority = 0; task_context->initiator_request = 1; - task_context->connection_rate = - scic_remote_device_get_connection_rate(target_device); + 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 = @@ -527,7 +273,7 @@ static void scu_ssp_reqeust_construct_task_context( task_context->address_modifier = 0; - /* task_context->type.ssp.tag = this_request->io_tag; */ + /* task_context->type.ssp.tag = sci_req->io_tag; */ task_context->task_phase = 0x01; if (sds_request->was_tag_assigned_by_user) { @@ -565,7 +311,7 @@ static void scu_ssp_reqeust_construct_task_context( * SCU Task Context */ dma_addr = scic_io_request_get_dma_addr(sds_request, - sds_request->command_buffer); + &sds_request->ssp.cmd); task_context->command_iu_upper = upper_32_bits(dma_addr); task_context->command_iu_lower = lower_32_bits(dma_addr); @@ -575,7 +321,7 @@ static void scu_ssp_reqeust_construct_task_context( * SCU Task Context */ dma_addr = scic_io_request_get_dma_addr(sds_request, - sds_request->response_buffer); + &sds_request->ssp.rsp); task_context->response_iu_upper = upper_32_bits(dma_addr); task_context->response_iu_lower = lower_32_bits(dma_addr); @@ -583,7 +329,7 @@ static void scu_ssp_reqeust_construct_task_context( /** * This method is will fill in the SCU Task Context for a SSP IO request. - * @this_request: + * @sci_req: * */ static void scu_ssp_io_request_construct_task_context( @@ -597,8 +343,9 @@ static void scu_ssp_io_request_construct_task_context( scu_ssp_reqeust_construct_task_context(sci_req, task_context); - task_context->ssp_command_iu_length = sizeof(struct sci_ssp_command_iu) / sizeof(u32); - task_context->type.ssp.frame_type = SCI_SAS_COMMAND_FRAME; + task_context->ssp_command_iu_length = + sizeof(struct ssp_cmd_iu) / sizeof(u32); + task_context->type.ssp.frame_type = SSP_COMMAND; switch (dir) { case DMA_FROM_DEVICE: @@ -617,29 +364,10 @@ static void scu_ssp_io_request_construct_task_context( scic_sds_request_build_sgl(sci_req); } - -/** - * This method will fill in the remainder of the io request object for SSP Task - * requests. - * @this_request: - * - */ -static void scic_sds_ssp_task_request_assign_buffers( - struct scic_sds_request *this_request) +static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req) { - /* Assign all of the buffer pointers */ - this_request->command_buffer = - scic_sds_ssp_task_request_get_command_buffer(this_request); - this_request->response_buffer = - scic_sds_ssp_task_request_get_response_buffer(this_request); - this_request->sgl_element_pair_buffer = NULL; - - if (this_request->was_tag_assigned_by_user == false) { - this_request->task_context_buffer = - scic_sds_ssp_task_request_get_task_context_buffer(this_request); - this_request->task_context_buffer = - scic_sds_request_align_task_context_buffer(this_request->task_context_buffer); - } + if (sci_req->was_tag_assigned_by_user == false) + sci_req->task_context_buffer = &sci_req->tc; } /** @@ -651,32 +379,33 @@ static void scic_sds_ssp_task_request_assign_buffers( * (i.e. non-raw frame) is being utilized to perform task management. -# * control_frame == 1. This ensures that the proper endianess is set so * that the bytes are transmitted in the right order for a task frame. - * @this_request: This parameter specifies the task request object being + * @sci_req: This parameter specifies the task request object being * constructed. * */ static void scu_ssp_task_request_construct_task_context( - struct scic_sds_request *this_request) + struct scic_sds_request *sci_req) { struct scu_task_context *task_context; - task_context = scic_sds_request_get_task_context(this_request); + task_context = scic_sds_request_get_task_context(sci_req); - scu_ssp_reqeust_construct_task_context(this_request, task_context); + scu_ssp_reqeust_construct_task_context(sci_req, task_context); task_context->control_frame = 1; task_context->priority = SCU_TASK_PRIORITY_HIGH; task_context->task_type = SCU_TASK_TYPE_RAW_FRAME; task_context->transfer_length_bytes = 0; - task_context->type.ssp.frame_type = SCI_SAS_TASK_FRAME; - task_context->ssp_command_iu_length = sizeof(struct sci_ssp_task_iu) / sizeof(u32); + task_context->type.ssp.frame_type = SSP_TASK; + task_context->ssp_command_iu_length = + sizeof(struct ssp_task_iu) / sizeof(u32); } /** * This method constructs the SSP Command IU data for this ssp passthrough * comand request object. - * @this_request: This parameter specifies the request object for which the SSP + * @sci_req: This parameter specifies the request object for which the SSP * command information unit is being built. * * enum sci_status, returns invalid parameter is cdb > 16 @@ -685,7 +414,7 @@ static void scu_ssp_task_request_construct_task_context( /** * This method constructs the SATA request object. - * @this_request: + * @sci_req: * @sat_protocol: * @transfer_length: * @data_direction: @@ -693,229 +422,76 @@ static void scu_ssp_task_request_construct_task_context( * * enum sci_status */ -static enum sci_status scic_io_request_construct_sata(struct scic_sds_request *sci_req, - u8 proto, u32 len, - enum dma_data_direction dir, - bool copy) -{ - enum sci_status status = SCI_SUCCESS; - - switch (proto) { - case SAT_PROTOCOL_PIO_DATA_IN: - case SAT_PROTOCOL_PIO_DATA_OUT: - status = scic_sds_stp_pio_request_construct(sci_req, proto, copy); - break; - - case SAT_PROTOCOL_UDMA_DATA_IN: - case SAT_PROTOCOL_UDMA_DATA_OUT: - status = scic_sds_stp_udma_request_construct(sci_req, len, dir); - break; - - case SAT_PROTOCOL_ATA_HARD_RESET: - case SAT_PROTOCOL_SOFT_RESET: - status = scic_sds_stp_soft_reset_request_construct(sci_req); - break; - - case SAT_PROTOCOL_NON_DATA: - status = scic_sds_stp_non_data_request_construct(sci_req); - break; - - case SAT_PROTOCOL_FPDMA: - status = scic_sds_stp_ncq_request_construct(sci_req, len, dir); - break; - -#if !defined(DISABLE_ATAPI) - case SAT_PROTOCOL_PACKET_NON_DATA: - case SAT_PROTOCOL_PACKET_DMA_DATA_IN: - case SAT_PROTOCOL_PACKET_DMA_DATA_OUT: - case SAT_PROTOCOL_PACKET_PIO_DATA_IN: - case SAT_PROTOCOL_PACKET_PIO_DATA_OUT: - status = scic_sds_stp_packet_request_construct(sci_req); - break; -#endif - - case SAT_PROTOCOL_DMA_QUEUED: - case SAT_PROTOCOL_DMA: - case SAT_PROTOCOL_DEVICE_DIAGNOSTIC: - case SAT_PROTOCOL_DEVICE_RESET: - case SAT_PROTOCOL_RETURN_RESPONSE_INFO: - default: - dev_err(scic_to_dev(sci_req->owning_controller), - "%s: SCIC IO Request 0x%p received un-handled " - "SAT Protocl %d.\n", - __func__, sci_req, proto); - - status = SCI_FAILURE; - break; - } - - return status; -} - -/* - * **************************************************************************** - * * SCIC Interface Implementation - * **************************************************************************** */ - - - - -/* --------------------------------------------------------------------------- */ - -u32 scic_io_request_get_object_size(void) -{ - u32 ssp_request_size; - u32 stp_request_size; - u32 smp_request_size; - - ssp_request_size = scic_sds_ssp_request_get_object_size(); - stp_request_size = scic_sds_stp_request_get_object_size(); - smp_request_size = scic_sds_smp_request_get_object_size(); - - return max(ssp_request_size, max(stp_request_size, smp_request_size)); -} - -/* --------------------------------------------------------------------------- */ - - -/* --------------------------------------------------------------------------- */ - - -/* --------------------------------------------------------------------------- */ - - -/* --------------------------------------------------------------------------- */ - -enum sci_status scic_io_request_construct( - struct scic_sds_controller *scic_controller, - struct scic_sds_remote_device *scic_remote_device, - u16 io_tag, - void *user_io_request_object, - void *scic_io_request_memory, - struct scic_sds_request **new_scic_io_request_handle) +static enum sci_status +scic_io_request_construct_sata(struct scic_sds_request *sci_req, + u32 len, + enum dma_data_direction dir, + bool copy) { enum sci_status status = SCI_SUCCESS; - struct scic_sds_request *this_request; - struct smp_discover_response_protocols device_protocol; - - this_request = (struct scic_sds_request *)scic_io_request_memory; - - /* Build the common part of the request */ - scic_sds_general_request_construct( - (struct scic_sds_controller *)scic_controller, - (struct scic_sds_remote_device *)scic_remote_device, - io_tag, - user_io_request_object, - this_request - ); - - if ( - scic_sds_remote_device_get_index((struct scic_sds_remote_device *)scic_remote_device) - == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX - ) { - return SCI_FAILURE_INVALID_REMOTE_DEVICE; + struct isci_request *ireq = sci_req_to_ireq(sci_req); + struct sas_task *task = isci_request_access_task(ireq); + + /* check for management protocols */ + if (ireq->ttype == tmf_task) { + 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 { + dev_err(scic_to_dev(sci_req->owning_controller), + "%s: Request 0x%p received un-handled SAT " + "management protocol 0x%x.\n", + __func__, sci_req, tmf->tmf_code); + + return SCI_FAILURE; + } } - scic_remote_device_get_protocols(scic_remote_device, &device_protocol); - - if (device_protocol.u.bits.attached_ssp_target) { - scic_sds_ssp_io_request_assign_buffers(this_request); - } else if (device_protocol.u.bits.attached_stp_target) { - scic_sds_stp_request_assign_buffers(this_request); - memset(this_request->command_buffer, 0, sizeof(struct sata_fis_reg_h2d)); - } else if (device_protocol.u.bits.attached_smp_target) { - scic_sds_smp_request_assign_buffers(this_request); - memset(this_request->command_buffer, 0, sizeof(struct smp_request)); - } else { - status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; - } + if (!sas_protocol_ata(task->task_proto)) { + dev_err(scic_to_dev(sci_req->owning_controller), + "%s: Non-ATA protocol in SATA path: 0x%x\n", + __func__, + task->task_proto); + return SCI_FAILURE; - if (status == SCI_SUCCESS) { - memset( - this_request->task_context_buffer, - 0, - SCI_FIELD_OFFSET(struct scu_task_context, sgl_pair_ab) - ); - *new_scic_io_request_handle = scic_io_request_memory; } - return status; -} - -/* --------------------------------------------------------------------------- */ - - -enum sci_status scic_task_request_construct( - struct scic_sds_controller *controller, - struct scic_sds_remote_device *remote_device, - u16 io_tag, - void *user_io_request_object, - void *scic_task_request_memory, - struct scic_sds_request **new_scic_task_request_handle) -{ - enum sci_status status = SCI_SUCCESS; - struct scic_sds_request *this_request = (struct scic_sds_request *) - scic_task_request_memory; - struct smp_discover_response_protocols device_protocol; - - /* Build the common part of the request */ - scic_sds_general_request_construct( - (struct scic_sds_controller *)controller, - (struct scic_sds_remote_device *)remote_device, - io_tag, - user_io_request_object, - this_request - ); - - scic_remote_device_get_protocols(remote_device, &device_protocol); + /* non data */ + if (task->data_dir == DMA_NONE) + return scic_sds_stp_non_data_request_construct(sci_req); - if (device_protocol.u.bits.attached_ssp_target) { - scic_sds_ssp_task_request_assign_buffers(this_request); + /* NCQ */ + if (task->ata_task.use_ncq) + return scic_sds_stp_ncq_request_construct(sci_req, len, dir); - this_request->has_started_substate_machine = true; - - /* Construct the started sub-state machine. */ - sci_base_state_machine_construct( - &this_request->started_substate_machine, - &this_request->parent.parent, - scic_sds_io_request_started_task_mgmt_substate_table, - SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION - ); - } else if (device_protocol.u.bits.attached_stp_target) { - scic_sds_stp_request_assign_buffers(this_request); - } else { - status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; - } - - if (status == SCI_SUCCESS) { - this_request->is_task_management_request = true; - memset(this_request->task_context_buffer, 0x00, sizeof(struct scu_task_context)); - *new_scic_task_request_handle = scic_task_request_memory; - } + /* DMA */ + if (task->ata_task.dma_xfer) + return scic_sds_stp_udma_request_construct(sci_req, len, dir); + else /* PIO */ + return scic_sds_stp_pio_request_construct(sci_req, copy); return status; } - enum sci_status scic_io_request_construct_basic_ssp( struct scic_sds_request *sci_req) { - struct isci_request *isci_request = - (struct isci_request *)sci_object_get_association(sci_req); + struct isci_request *ireq = sci_req_to_ireq(sci_req); + struct sas_task *task = isci_request_access_task(ireq); sci_req->protocol = SCIC_SSP_PROTOCOL; - scu_ssp_io_request_construct_task_context( - sci_req, - isci_request_io_request_get_data_direction(isci_request), - isci_request_io_request_get_transfer_length(isci_request)); + scu_ssp_io_request_construct_task_context(sci_req, + task->data_dir, + task->total_xfer_len); scic_sds_io_request_build_ssp_command_iu(sci_req); sci_base_state_machine_change_state( - &sci_req->parent.state_machine, - SCI_BASE_REQUEST_STATE_CONSTRUCTED - ); + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_CONSTRUCTED); return SCI_SUCCESS; } @@ -930,10 +506,8 @@ enum sci_status scic_task_request_construct_ssp( /* Fill in the SSP Task IU */ scic_sds_task_request_build_ssp_task_iu(sci_req); - sci_base_state_machine_change_state( - &sci_req->parent.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; } @@ -944,68 +518,54 @@ enum sci_status scic_io_request_construct_basic_sata( { enum sci_status status; struct scic_sds_stp_request *stp_req; - u8 proto; - u32 len; - enum dma_data_direction dir; bool copy = false; - struct isci_request *isci_request = - (struct isci_request *)sci_object_get_association(sci_req); + struct isci_request *isci_request = sci_req_to_ireq(sci_req); struct sas_task *task = isci_request_access_task(isci_request); - stp_req = container_of(sci_req, typeof(*stp_req), parent); - + stp_req = &sci_req->stp.req; sci_req->protocol = SCIC_STP_PROTOCOL; - len = isci_request_io_request_get_transfer_length(isci_request); - dir = isci_request_io_request_get_data_direction(isci_request); - proto = isci_sata_get_sat_protocol(isci_request); copy = (task->data_dir == DMA_NONE) ? false : true; - status = scic_io_request_construct_sata(sci_req, proto, len, dir, copy); + status = scic_io_request_construct_sata(sci_req, + task->total_xfer_len, + task->data_dir, + copy); if (status == SCI_SUCCESS) - sci_base_state_machine_change_state( - &sci_req->parent.state_machine, - SCI_BASE_REQUEST_STATE_CONSTRUCTED - ); + sci_base_state_machine_change_state(&sci_req->state_machine, + SCI_BASE_REQUEST_STATE_CONSTRUCTED); return status; } -enum sci_status scic_task_request_construct_sata( - struct scic_sds_request *sci_req) +enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req) { - enum sci_status status; - u8 sat_protocol; - struct isci_request *isci_request = - (struct isci_request *)sci_object_get_association(sci_req); - - sat_protocol = isci_sata_get_sat_protocol(isci_request); + enum sci_status status = SCI_SUCCESS; + struct isci_request *ireq = sci_req_to_ireq(sci_req); - switch (sat_protocol) { - case SAT_PROTOCOL_ATA_HARD_RESET: - case SAT_PROTOCOL_SOFT_RESET: - status = scic_sds_stp_soft_reset_request_construct(sci_req); - break; + /* check for management protocols */ + if (ireq->ttype == tmf_task) { + struct isci_tmf *tmf = isci_request_access_tmf(ireq); - default: - dev_err(scic_to_dev(sci_req->owning_controller), - "%s: SCIC IO Request 0x%p received un-handled SAT " - "Protocl %d.\n", - __func__, - sci_req, - sat_protocol); + 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); + } else { + dev_err(scic_to_dev(sci_req->owning_controller), + "%s: Request 0x%p received un-handled SAT " + "Protocol 0x%x.\n", + __func__, sci_req, tmf->tmf_code); - status = SCI_FAILURE; - break; + return SCI_FAILURE; + } } if (status == SCI_SUCCESS) sci_base_state_machine_change_state( - &sci_req->parent.state_machine, - SCI_BASE_REQUEST_STATE_CONSTRUCTED - ); + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_CONSTRUCTED); return status; } @@ -1024,42 +584,24 @@ u32 scic_request_get_controller_status( return sci_req->scu_status; } - -void *scic_io_request_get_command_iu_address( - struct scic_sds_request *sci_req) -{ - return sci_req->command_buffer; -} - - -void *scic_io_request_get_response_iu_address( - struct scic_sds_request *sci_req) -{ - return sci_req->response_buffer; -} - - #define SCU_TASK_CONTEXT_SRAM 0x200000 u32 scic_io_request_get_number_of_bytes_transferred( struct scic_sds_request *scic_sds_request) { + struct scic_sds_controller *scic = scic_sds_request->owning_controller; u32 ret_val = 0; - if (SMU_AMR_READ(scic_sds_request->owning_controller) == 0) { + if (readl(&scic->smu_registers->address_modifier) == 0) { + void __iomem *scu_reg_base = scic->scu_registers; /* * get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where * BAR1 is the scu_registers * 0x20002C = 0x200000 + 0x2c * = start of task context SRAM + offset of (type.ssp.data_offset) * TCi is the io_tag of struct scic_sds_request */ - ret_val = scic_sds_pci_read_scu_dword( - scic_sds_request->owning_controller, - ( - (u8 *)scic_sds_request->owning_controller->scu_registers + - (SCU_TASK_CONTEXT_SRAM + SCI_FIELD_OFFSET(struct scu_task_context, type.ssp.data_offset)) + - ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(scic_sds_request->io_tag)) - ) - ); + ret_val = readl(scu_reg_base + + (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) + + ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(scic_sds_request->io_tag))); } return ret_val; @@ -1071,317 +613,144 @@ u32 scic_io_request_get_number_of_bytes_transferred( * * SCIC SDS Interface Implementation * **************************************************************************** */ -/** - * - * @this_request: The SCIC_SDS_IO_REQUEST_T object for which the start - * operation is to be executed. - * - * This method invokes the base state start request handler for the - * SCIC_SDS_IO_REQUEST_T object. enum sci_status - */ -enum sci_status scic_sds_request_start( - struct scic_sds_request *this_request) -{ - if ( - this_request->device_sequence - == scic_sds_remote_device_get_sequence(this_request->target_device) - ) { - return this_request->state_handlers->parent.start_handler( - &this_request->parent - ); - } - - return SCI_FAILURE; -} - -/** - * - * @this_request: The SCIC_SDS_IO_REQUEST_T object for which the start - * operation is to be executed. - * - * This method invokes the base state terminate request handber for the - * SCIC_SDS_IO_REQUEST_T object. enum sci_status - */ -enum sci_status scic_sds_io_request_terminate( - struct scic_sds_request *this_request) -{ - return this_request->state_handlers->parent.abort_handler( - &this_request->parent); -} - -/** - * - * @this_request: The SCIC_SDS_IO_REQUEST_T object for which the start - * operation is to be executed. - * - * This method invokes the base state request completion handler for the - * SCIC_SDS_IO_REQUEST_T object. enum sci_status - */ -enum sci_status scic_sds_io_request_complete( - struct scic_sds_request *this_request) -{ - return this_request->state_handlers->parent.complete_handler( - &this_request->parent); -} - -/** - * - * @this_request: The SCIC_SDS_IO_REQUEST_T object for which the start - * operation is to be executed. - * @event_code: The event code returned by the hardware for the task reqeust. - * - * This method invokes the core state handler for the SCIC_SDS_IO_REQUEST_T - * object. enum sci_status - */ -enum sci_status scic_sds_io_request_event_handler( - struct scic_sds_request *this_request, - u32 event_code) -{ - return this_request->state_handlers->event_handler(this_request, event_code); -} - -/** - * - * @this_request: The SCIC_SDS_IO_REQUEST_T object for which the start - * operation is to be executed. - * @frame_index: The frame index returned by the hardware for the reqeust - * object. - * - * This method invokes the core state frame handler for the - * SCIC_SDS_IO_REQUEST_T object. enum sci_status - */ -enum sci_status scic_sds_io_request_frame_handler( - struct scic_sds_request *this_request, - u32 frame_index) -{ - return this_request->state_handlers->frame_handler(this_request, frame_index); -} - -/** - * - * @this_request: The SCIC_SDS_IO_REQUEST_T object for which the task start - * operation is to be executed. - * - * This method invokes the core state task complete handler for the - * SCIC_SDS_IO_REQUEST_T object. enum sci_status - */ - -/* - * **************************************************************************** - * * SCIC SDS PROTECTED METHODS - * **************************************************************************** */ - -/** - * This method copies response data for requests returning response data - * instead of sense data. - * @this_request: This parameter specifies the request object for which to copy - * the response data. - * - */ -void scic_sds_io_request_copy_response(struct scic_sds_request *sds_request) +enum sci_status +scic_sds_request_start(struct scic_sds_request *request) { - void *response_buffer; - u32 user_response_length; - u32 core_response_length; - struct sci_ssp_response_iu *ssp_response; - struct isci_request *isci_request = - (struct isci_request *)sci_object_get_association(sds_request); - - ssp_response = - (struct sci_ssp_response_iu *)sds_request->response_buffer; - - response_buffer = - isci_task_ssp_request_get_response_data_address( - isci_request); - - user_response_length = - isci_task_ssp_request_get_response_data_length( - isci_request); + if (request->device_sequence != + scic_sds_remote_device_get_sequence(request->target_device)) + return SCI_FAILURE; - core_response_length = sci_ssp_get_response_data_length( - ssp_response->response_data_length); + if (request->state_handlers->start_handler) + return request->state_handlers->start_handler(request); - user_response_length = min(user_response_length, core_response_length); - - memcpy(response_buffer, ssp_response->data, user_response_length); -} - -/* - * ***************************************************************************** - * * DEFAULT STATE HANDLERS - * ***************************************************************************** */ - -/** - * scic_sds_request_default_start_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * - * This method is the default action to take when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_start() request. The default action is - * to log a warning and return a failure status. enum sci_status - * SCI_FAILURE_INVALID_STATE - */ -enum sci_status scic_sds_request_default_start_handler( - struct sci_base_request *request) -{ - struct scic_sds_request *scic_request = - (struct scic_sds_request *)request; - - dev_warn(scic_to_dev(scic_request->owning_controller), + dev_warn(scic_to_dev(request->owning_controller), "%s: SCIC IO Request requested to start while in wrong " "state %d\n", __func__, - sci_base_state_machine_get_state( - &((struct scic_sds_request *)request)->parent.state_machine)); + sci_base_state_machine_get_state(&request->state_machine)); return SCI_FAILURE_INVALID_STATE; } -static enum sci_status scic_sds_request_default_abort_handler( - struct sci_base_request *request) +enum sci_status +scic_sds_io_request_terminate(struct scic_sds_request *request) { - struct scic_sds_request *scic_request = - (struct scic_sds_request *)request; + if (request->state_handlers->abort_handler) + return request->state_handlers->abort_handler(request); - dev_warn(scic_to_dev(scic_request->owning_controller), + dev_warn(scic_to_dev(request->owning_controller), "%s: SCIC IO Request requested to abort while in wrong " "state %d\n", __func__, - sci_base_state_machine_get_state( - &((struct scic_sds_request *)request)->parent.state_machine)); + sci_base_state_machine_get_state(&request->state_machine)); return SCI_FAILURE_INVALID_STATE; } -/** - * scic_sds_request_default_complete_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * - * This method is the default action to take when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_complete() request. The default action - * is to log a warning and return a failure status. enum sci_status - * SCI_FAILURE_INVALID_STATE - */ -enum sci_status scic_sds_request_default_complete_handler( - struct sci_base_request *request) +enum sci_status +scic_sds_io_request_complete(struct scic_sds_request *request) { - struct scic_sds_request *scic_request = - (struct scic_sds_request *)request; + if (request->state_handlers->complete_handler) + return request->state_handlers->complete_handler(request); - dev_warn(scic_to_dev(scic_request->owning_controller), + dev_warn(scic_to_dev(request->owning_controller), "%s: SCIC IO Request requested to complete while in wrong " "state %d\n", __func__, - sci_base_state_machine_get_state( - &((struct scic_sds_request *)request)->parent.state_machine)); + sci_base_state_machine_get_state(&request->state_machine)); return SCI_FAILURE_INVALID_STATE; } -/** - * scic_sds_request_default_destruct_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * - * This method is the default action to take when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_complete() request. The default action - * is to log a warning and return a failure status. enum sci_status - * SCI_FAILURE_INVALID_STATE - */ -enum sci_status scic_sds_request_default_destruct_handler( - struct sci_base_request *request) +enum sci_status scic_sds_io_request_event_handler( + struct scic_sds_request *request, + u32 event_code) { - struct scic_sds_request *scic_request = - (struct scic_sds_request *)request; + if (request->state_handlers->event_handler) + return request->state_handlers->event_handler(request, event_code); - dev_warn(scic_to_dev(scic_request->owning_controller), - "%s: SCIC IO Request requested to destroy while in wrong " - "state %d\n", + dev_warn(scic_to_dev(request->owning_controller), + "%s: SCIC IO Request given event code notification %x while " + "in wrong state %d\n", __func__, - sci_base_state_machine_get_state( - &((struct scic_sds_request *)request)->parent.state_machine)); + event_code, + sci_base_state_machine_get_state(&request->state_machine)); return SCI_FAILURE_INVALID_STATE; } -/** - * scic_sds_request_default_tc_completion_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * - * This method is the default action to take when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_task_request_complete() request. The default - * action is to log a warning and return a failure status. enum sci_status - * SCI_FAILURE_INVALID_STATE - */ -enum sci_status scic_sds_request_default_tc_completion_handler( - struct scic_sds_request *this_request, - u32 completion_code) +enum sci_status +scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code) { - dev_warn(scic_to_dev(this_request->owning_controller), + if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED && + request->has_started_substate_machine == false) + return scic_sds_request_started_state_tc_completion_handler(request, completion_code); + else if (request->state_handlers->tc_completion_handler) + return request->state_handlers->tc_completion_handler(request, completion_code); + + dev_warn(scic_to_dev(request->owning_controller), "%s: SCIC IO Request given task completion notification %x " "while in wrong state %d\n", __func__, completion_code, - sci_base_state_machine_get_state( - &this_request->parent.state_machine)); + sci_base_state_machine_get_state(&request->state_machine)); return SCI_FAILURE_INVALID_STATE; } + /** - * scic_sds_request_default_event_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. * - * This method is the default action to take when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_event_handler() request. The default - * action is to log a warning and return a failure status. enum sci_status - * SCI_FAILURE_INVALID_STATE + * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start + * operation is to be executed. + * @frame_index: The frame index returned by the hardware for the reqeust + * object. + * + * This method invokes the core state frame handler for the + * SCIC_SDS_IO_REQUEST_T object. enum sci_status */ -enum sci_status scic_sds_request_default_event_handler( - struct scic_sds_request *this_request, - u32 event_code) +enum sci_status scic_sds_io_request_frame_handler( + struct scic_sds_request *request, + u32 frame_index) { - dev_warn(scic_to_dev(this_request->owning_controller), - "%s: SCIC IO Request given event code notification %x while " - "in wrong state %d\n", + if (request->state_handlers->frame_handler) + return request->state_handlers->frame_handler(request, frame_index); + + dev_warn(scic_to_dev(request->owning_controller), + "%s: SCIC IO Request given unexpected frame %x while in " + "state %d\n", __func__, - event_code, - sci_base_state_machine_get_state( - &this_request->parent.state_machine)); + frame_index, + sci_base_state_machine_get_state(&request->state_machine)); + scic_sds_controller_release_frame(request->owning_controller, frame_index); return SCI_FAILURE_INVALID_STATE; } -/** - * scic_sds_request_default_frame_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * - * This method is the default action to take when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_event_handler() request. The default - * action is to log a warning and return a failure status. enum sci_status - * SCI_FAILURE_INVALID_STATE +/* + * This function copies response data for requests returning response data + * instead of sense data. + * @sci_req: This parameter specifies the request object for which to copy + * the response data. */ -enum sci_status scic_sds_request_default_frame_handler( - struct scic_sds_request *this_request, - u32 frame_index) +void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req) { - dev_warn(scic_to_dev(this_request->owning_controller), - "%s: SCIC IO Request given unexpected frame %x while in " - "state %d\n", - __func__, - frame_index, - sci_base_state_machine_get_state( - &this_request->parent.state_machine)); + void *resp_buf; + u32 len; + struct ssp_response_iu *ssp_response; + struct isci_request *ireq = sci_req_to_ireq(sci_req); + struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq); - scic_sds_controller_release_frame( - this_request->owning_controller, frame_index); + ssp_response = &sci_req->ssp.rsp; - return SCI_FAILURE_INVALID_STATE; + resp_buf = &isci_tmf->resp.resp_iu; + + len = min_t(u32, + SSP_RESP_IU_MAX_SIZE, + be32_to_cpu(ssp_response->response_data_len)); + + memcpy(resp_buf, ssp_response->resp_data, len); } /* @@ -1389,11 +758,7 @@ enum sci_status scic_sds_request_default_frame_handler( * * CONSTRUCTED STATE HANDLERS * ***************************************************************************** */ -/** - * scic_sds_request_constructed_state_start_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * +/* * This method implements the action taken when a constructed * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request. * This method will, if necessary, allocate a TCi for the io request object and @@ -1403,34 +768,33 @@ enum sci_status scic_sds_request_default_frame_handler( * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES */ static enum sci_status scic_sds_request_constructed_state_start_handler( - struct sci_base_request *request) + struct scic_sds_request *request) { struct scu_task_context *task_context; - struct scic_sds_request *this_request = (struct scic_sds_request *)request; - if (this_request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { - this_request->io_tag = - scic_controller_allocate_io_tag(this_request->owning_controller); + if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { + request->io_tag = + scic_controller_allocate_io_tag(request->owning_controller); } /* Record the IO Tag in the request */ - if (this_request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) { - task_context = this_request->task_context_buffer; + if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) { + task_context = request->task_context_buffer; - task_context->task_index = scic_sds_io_tag_get_index(this_request->io_tag); + task_context->task_index = scic_sds_io_tag_get_index(request->io_tag); switch (task_context->protocol_type) { case SCU_TASK_CONTEXT_PROTOCOL_SMP: case SCU_TASK_CONTEXT_PROTOCOL_SSP: /* SSP/SMP Frame */ - task_context->type.ssp.tag = this_request->io_tag; + task_context->type.ssp.tag = request->io_tag; task_context->type.ssp.target_port_transfer_tag = 0xFFFF; break; case SCU_TASK_CONTEXT_PROTOCOL_STP: /* * STP/SATA Frame - * task_context->type.stp.ncq_tag = this_request->ncq_tag; */ + * task_context->type.stp.ncq_tag = request->ncq_tag; */ break; case SCU_TASK_CONTEXT_PROTOCOL_NONE: @@ -1445,20 +809,17 @@ static enum sci_status scic_sds_request_constructed_state_start_handler( /* * Check to see if we need to copy the task context buffer * or have been building into the task context buffer */ - if (this_request->was_tag_assigned_by_user == false) { + if (request->was_tag_assigned_by_user == false) { scic_sds_controller_copy_task_context( - this_request->owning_controller, this_request - ); + request->owning_controller, request); } /* Add to the post_context the io tag value */ - this_request->post_context |= scic_sds_io_tag_get_index(this_request->io_tag); + request->post_context |= scic_sds_io_tag_get_index(request->io_tag); /* Everything is good go ahead and change state */ - sci_base_state_machine_change_state( - &this_request->parent.state_machine, - SCI_BASE_REQUEST_STATE_STARTED - ); + sci_base_state_machine_change_state(&request->state_machine, + SCI_BASE_REQUEST_STATE_STARTED); return SCI_SUCCESS; } @@ -1466,35 +827,24 @@ static enum sci_status scic_sds_request_constructed_state_start_handler( return SCI_FAILURE_INSUFFICIENT_RESOURCES; } -/** - * scic_sds_request_constructed_state_abort_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * +/* * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T * object receives a scic_sds_request_terminate() request. Since the request * has not yet been posted to the hardware the request transitions to the * completed state. enum sci_status SCI_SUCCESS */ static enum sci_status scic_sds_request_constructed_state_abort_handler( - struct sci_base_request *request) + struct scic_sds_request *request) { - struct scic_sds_request *this_request = (struct scic_sds_request *)request; - /* * This request has been terminated by the user make sure that the correct * status code is returned */ - scic_sds_request_set_status( - this_request, + scic_sds_request_set_status(request, SCU_TASK_DONE_TASK_ABORT, - SCI_FAILURE_IO_TERMINATED - ); - - sci_base_state_machine_change_state( - &this_request->parent.state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED - ); + SCI_FAILURE_IO_TERMINATED); + sci_base_state_machine_change_state(&request->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); return SCI_SUCCESS; } @@ -1503,126 +853,115 @@ static enum sci_status scic_sds_request_constructed_state_abort_handler( * * STARTED STATE HANDLERS * ***************************************************************************** */ -/** - * scic_sds_request_started_state_abort_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * +/* * 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 sci_base_request *request) + struct scic_sds_request *request) { - struct scic_sds_request *this_request = (struct scic_sds_request *)request; - - if (this_request->has_started_substate_machine) { - sci_base_state_machine_stop(&this_request->started_substate_machine); - } - - sci_base_state_machine_change_state( - &this_request->parent.state_machine, - SCI_BASE_REQUEST_STATE_ABORTING - ); + if (request->has_started_substate_machine) + sci_base_state_machine_stop(&request->started_substate_machine); + sci_base_state_machine_change_state(&request->state_machine, + SCI_BASE_REQUEST_STATE_ABORTING); return SCI_SUCCESS; } -/** +/* * scic_sds_request_started_state_tc_completion_handler() - This method process * TC (task context) completions for normal IO request (i.e. Task/Abort * Completions of type 0). This method will update the * SCIC_SDS_IO_REQUEST_T::status field. - * @this_request: This parameter specifies the request for which a completion + * @sci_req: This parameter specifies the request for which a completion * occurred. * @completion_code: This parameter specifies the completion code received from * the SCU. * */ -enum sci_status scic_sds_request_started_state_tc_completion_handler( - struct scic_sds_request *this_request, - u32 completion_code) +enum sci_status +scic_sds_request_started_state_tc_completion_handler( + struct scic_sds_request *sci_req, + u32 completion_code) { - u8 data_present; - struct sci_ssp_response_iu *response_buffer; + u8 datapres; + struct ssp_response_iu *resp_iu; - /** - * @todo Any SDMA return code of other than 0 is bad + /* + * TODO: Any SDMA return code of other than 0 is bad * decode 0x003C0000 to determine SDMA status */ switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): - scic_sds_request_set_status( - this_request, SCU_TASK_DONE_GOOD, SCI_SUCCESS - ); + scic_sds_request_set_status(sci_req, + SCU_TASK_DONE_GOOD, + SCI_SUCCESS); break; case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP): { /* - * There are times when the SCU hardware will return an early response - * because the io request specified more data than is returned by the - * target device (mode pages, inquiry data, etc.). We must check the - * response stats to see if this is truly a failed request or a good - * request that just got completed early. */ - struct sci_ssp_response_iu *response = (struct sci_ssp_response_iu *) - this_request->response_buffer; - scic_word_copy_with_swap( - this_request->response_buffer, - this_request->response_buffer, - sizeof(struct sci_ssp_response_iu) / sizeof(u32) - ); + * There are times when the SCU hardware will return an early + * response because the io request specified more data than is + * returned by the target device (mode pages, inquiry data, + * etc.). We must check the response stats to see if this is + * truly a failed request or a good request that just got + * completed early. + */ + struct ssp_response_iu *resp = &sci_req->ssp.rsp; + ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); + + sci_swab32_cpy(&sci_req->ssp.rsp, + &sci_req->ssp.rsp, + word_cnt); - if (response->status == 0) { + if (resp->status == 0) { scic_sds_request_set_status( - this_request, SCU_TASK_DONE_GOOD, SCI_SUCCESS_IO_DONE_EARLY - ); + sci_req, + SCU_TASK_DONE_GOOD, + SCI_SUCCESS_IO_DONE_EARLY); } else { scic_sds_request_set_status( - this_request, + sci_req, SCU_TASK_DONE_CHECK_RESPONSE, - SCI_FAILURE_IO_RESPONSE_VALID - ); + SCI_FAILURE_IO_RESPONSE_VALID); } } break; case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE): - scic_word_copy_with_swap( - this_request->response_buffer, - this_request->response_buffer, - sizeof(struct sci_ssp_response_iu) / sizeof(u32) - ); + { + ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); - scic_sds_request_set_status( - this_request, - SCU_TASK_DONE_CHECK_RESPONSE, - SCI_FAILURE_IO_RESPONSE_VALID - ); + sci_swab32_cpy(&sci_req->ssp.rsp, + &sci_req->ssp.rsp, + word_cnt); + + scic_sds_request_set_status(sci_req, + SCU_TASK_DONE_CHECK_RESPONSE, + SCI_FAILURE_IO_RESPONSE_VALID); break; + } case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR): /* - * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame guaranteed - * / to be received before this completion status is posted? */ - response_buffer = - (struct sci_ssp_response_iu *)this_request->response_buffer; - data_present = - response_buffer->data_present & SCI_SSP_RESPONSE_IU_DATA_PRESENT_MASK; - - if ((data_present == 0x01) || (data_present == 0x02)) { + * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame + * guaranteed to be received before this completion status is + * posted? + */ + resp_iu = &sci_req->ssp.rsp; + datapres = resp_iu->datapres; + + if ((datapres == 0x01) || (datapres == 0x02)) { scic_sds_request_set_status( - this_request, + sci_req, SCU_TASK_DONE_CHECK_RESPONSE, - SCI_FAILURE_IO_RESPONSE_VALID - ); - } else { + SCI_FAILURE_IO_RESPONSE_VALID); + } else scic_sds_request_set_status( - this_request, SCU_TASK_DONE_GOOD, SCI_SUCCESS - ); - } + sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); break; /* only stp device gets suspended. */ @@ -1637,18 +976,18 @@ enum sci_status scic_sds_request_started_state_tc_completion_handler( case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS): case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR): case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR): - if (this_request->protocol == SCIC_STP_PROTOCOL) { + if (sci_req->protocol == SCIC_STP_PROTOCOL) { scic_sds_request_set_status( - this_request, - SCU_GET_COMPLETION_TL_STATUS(completion_code) >> SCU_COMPLETION_TL_STATUS_SHIFT, - SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED - ); + sci_req, + SCU_GET_COMPLETION_TL_STATUS(completion_code) >> + SCU_COMPLETION_TL_STATUS_SHIFT, + SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED); } else { scic_sds_request_set_status( - this_request, - SCU_GET_COMPLETION_TL_STATUS(completion_code) >> SCU_COMPLETION_TL_STATUS_SHIFT, - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR - ); + sci_req, + SCU_GET_COMPLETION_TL_STATUS(completion_code) >> + SCU_COMPLETION_TL_STATUS_SHIFT, + SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); } break; @@ -1664,10 +1003,10 @@ enum sci_status scic_sds_request_started_state_tc_completion_handler( case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED): case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED): scic_sds_request_set_status( - this_request, - SCU_GET_COMPLETION_TL_STATUS(completion_code) >> SCU_COMPLETION_TL_STATUS_SHIFT, - SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED - ); + sci_req, + SCU_GET_COMPLETION_TL_STATUS(completion_code) >> + SCU_COMPLETION_TL_STATUS_SHIFT, + SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED); break; /* neither ssp nor stp gets suspended. */ @@ -1688,32 +1027,25 @@ enum sci_status scic_sds_request_started_state_tc_completion_handler( case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND): default: scic_sds_request_set_status( - this_request, - SCU_GET_COMPLETION_TL_STATUS(completion_code) >> SCU_COMPLETION_TL_STATUS_SHIFT, - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR - ); + sci_req, + SCU_GET_COMPLETION_TL_STATUS(completion_code) >> + SCU_COMPLETION_TL_STATUS_SHIFT, + SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); break; } - /** - * @todo This is probably wrong for ACK/NAK timeout conditions + /* + * TODO: This is probably wrong for ACK/NAK timeout conditions */ - /* In all cases we will treat this as the completion of the IO request. */ + /* In all cases we will treat this as the completion of the IO req. */ sci_base_state_machine_change_state( - &this_request->parent.state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED - ); - + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); return SCI_SUCCESS; } -/** - * scic_sds_request_started_state_frame_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * @frame_index: This is the index of the unsolicited frame to be processed. - * +/* * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T * object receives a scic_sds_request_frame_handler() request. This method * first determines the frame type received. If this is a response frame then @@ -1721,64 +1053,63 @@ enum sci_status scic_sds_request_started_state_tc_completion_handler( * at completion time. If the frame type is not a response buffer an error is * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE */ -static enum sci_status scic_sds_request_started_state_frame_handler( - struct scic_sds_request *this_request, - u32 frame_index) +static enum sci_status +scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req, + u32 frame_index) { enum sci_status status; - struct sci_ssp_frame_header *frame_header; + u32 *frame_header; + struct ssp_frame_hdr ssp_hdr; + ssize_t word_cnt; - /* / @todo If this is a response frame we must record that we received it */ status = scic_sds_unsolicited_frame_control_get_header( - &(scic_sds_request_get_controller(this_request)->uf_control), + &(scic_sds_request_get_controller(sci_req)->uf_control), frame_index, - (void **)&frame_header - ); + (void **)&frame_header); + + word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32); + sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt); - if (frame_header->frame_type == SCI_SAS_RESPONSE_FRAME) { - struct sci_ssp_response_iu *response_buffer; + if (ssp_hdr.frame_type == SSP_RESPONSE) { + struct ssp_response_iu *resp_iu; + ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); status = scic_sds_unsolicited_frame_control_get_buffer( - &(scic_sds_request_get_controller(this_request)->uf_control), + &(scic_sds_request_get_controller(sci_req)->uf_control), frame_index, - (void **)&response_buffer - ); + (void **)&resp_iu); - scic_word_copy_with_swap( - this_request->response_buffer, - (u32 *)response_buffer, - sizeof(struct sci_ssp_response_iu) - ); + sci_swab32_cpy(&sci_req->ssp.rsp, + resp_iu, word_cnt); - response_buffer = (struct sci_ssp_response_iu *)this_request->response_buffer; + resp_iu = &sci_req->ssp.rsp; - if ((response_buffer->data_present == 0x01) || - (response_buffer->data_present == 0x02)) { + if ((resp_iu->datapres == 0x01) || + (resp_iu->datapres == 0x02)) { scic_sds_request_set_status( - this_request, + sci_req, SCU_TASK_DONE_CHECK_RESPONSE, - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR - ); + SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); } else scic_sds_request_set_status( - this_request, SCU_TASK_DONE_GOOD, SCI_SUCCESS - ); - } else + sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); + } else { /* This was not a response frame why did it get forwarded? */ - dev_err(scic_to_dev(this_request->owning_controller), + dev_err(scic_to_dev(sci_req->owning_controller), "%s: SCIC IO Request 0x%p received unexpected " "frame %d type 0x%02x\n", __func__, - this_request, + sci_req, frame_index, - frame_header->frame_type); + ssp_hdr.frame_type); + } /* * In any case we are done with this frame buffer return it to the - * controller */ + * controller + */ scic_sds_controller_release_frame( - this_request->owning_controller, frame_index - ); + sci_req->owning_controller, frame_index); return SCI_SUCCESS; } @@ -1789,11 +1120,7 @@ static enum sci_status scic_sds_request_started_state_frame_handler( * ***************************************************************************** */ -/** - * scic_sds_request_completed_state_complete_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * +/* * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T * object receives a scic_sds_request_complete() request. This method frees up * any io request resources that have been allocated and transitions the @@ -1801,26 +1128,20 @@ static enum sci_status scic_sds_request_started_state_frame_handler( * transitioning to the final state? enum sci_status SCI_SUCCESS */ static enum sci_status scic_sds_request_completed_state_complete_handler( - struct sci_base_request *request) + struct scic_sds_request *request) { - struct scic_sds_request *this_request = (struct scic_sds_request *)request; - - if (this_request->was_tag_assigned_by_user != true) { + if (request->was_tag_assigned_by_user != true) { scic_controller_free_io_tag( - this_request->owning_controller, this_request->io_tag - ); + request->owning_controller, request->io_tag); } - if (this_request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) { + if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) { scic_sds_controller_release_frame( - this_request->owning_controller, this_request->saved_rx_frame_index); + request->owning_controller, request->saved_rx_frame_index); } - sci_base_state_machine_change_state( - &this_request->parent.state_machine, - SCI_BASE_REQUEST_STATE_FINAL - ); - + sci_base_state_machine_change_state(&request->state_machine, + SCI_BASE_REQUEST_STATE_FINAL); return SCI_SUCCESS; } @@ -1829,11 +1150,7 @@ static enum sci_status scic_sds_request_completed_state_complete_handler( * * ABORTING STATE HANDLERS * ***************************************************************************** */ -/** - * scic_sds_request_aborting_state_abort_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * +/* * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T * object receives a scic_sds_request_terminate() request. This method is the * io request aborting state abort handlers. On receipt of a multiple @@ -1841,23 +1158,14 @@ static enum sci_status scic_sds_request_completed_state_complete_handler( * This should not happen in normal operation. enum sci_status SCI_SUCCESS */ static enum sci_status scic_sds_request_aborting_state_abort_handler( - struct sci_base_request *request) + struct scic_sds_request *request) { - struct scic_sds_request *this_request = (struct scic_sds_request *)request; - - sci_base_state_machine_change_state( - &this_request->parent.state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED - ); - + sci_base_state_machine_change_state(&request->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); return SCI_SUCCESS; } -/** - * scic_sds_request_aborting_state_tc_completion_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * +/* * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T * object receives a scic_sds_request_task_completion() request. This method * decodes the completion type waiting for the abort task complete @@ -1865,20 +1173,18 @@ static enum sci_status scic_sds_request_aborting_state_abort_handler( * transitions to the completed state. enum sci_status SCI_SUCCESS */ static enum sci_status scic_sds_request_aborting_state_tc_completion_handler( - struct scic_sds_request *this_request, + struct scic_sds_request *sci_req, u32 completion_code) { switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT): case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT): scic_sds_request_set_status( - this_request, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED + sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED ); - sci_base_state_machine_change_state( - &this_request->parent.state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED - ); + sci_base_state_machine_change_state(&sci_req->state_machine, + SCI_BASE_REQUEST_STATE_COMPLETED); break; default: @@ -1891,84 +1197,45 @@ static enum sci_status scic_sds_request_aborting_state_tc_completion_handler( return SCI_SUCCESS; } -/** - * scic_sds_request_aborting_state_frame_handler() - - * @request: This is the struct sci_base_request object that is cast to the - * SCIC_SDS_IO_REQUEST_T object for which the start operation is requested. - * +/* * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T * object receives a scic_sds_request_frame_handler() request. This method * discards the unsolicited frame since we are waiting for the abort task * completion. enum sci_status SCI_SUCCESS */ static enum sci_status scic_sds_request_aborting_state_frame_handler( - struct scic_sds_request *this_request, + struct scic_sds_request *sci_req, u32 frame_index) { /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */ scic_sds_controller_release_frame( - this_request->owning_controller, frame_index); + sci_req->owning_controller, frame_index); return SCI_SUCCESS; } -/* --------------------------------------------------------------------------- */ - -const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = { +static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = { [SCI_BASE_REQUEST_STATE_INITIAL] = { - .parent.start_handler = scic_sds_request_default_start_handler, - .parent.abort_handler = scic_sds_request_default_abort_handler, - .parent.complete_handler = scic_sds_request_default_complete_handler, - .parent.destruct_handler = scic_sds_request_default_destruct_handler, - .tc_completion_handler = scic_sds_request_default_tc_completion_handler, - .event_handler = scic_sds_request_default_event_handler, - .frame_handler = scic_sds_request_default_frame_handler, }, [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { - .parent.start_handler = scic_sds_request_constructed_state_start_handler, - .parent.abort_handler = scic_sds_request_constructed_state_abort_handler, - .parent.complete_handler = scic_sds_request_default_complete_handler, - .parent.destruct_handler = scic_sds_request_default_destruct_handler, - .tc_completion_handler = scic_sds_request_default_tc_completion_handler, - .event_handler = scic_sds_request_default_event_handler, - .frame_handler = scic_sds_request_default_frame_handler, + .start_handler = scic_sds_request_constructed_state_start_handler, + .abort_handler = scic_sds_request_constructed_state_abort_handler, }, [SCI_BASE_REQUEST_STATE_STARTED] = { - .parent.start_handler = scic_sds_request_default_start_handler, - .parent.abort_handler = scic_sds_request_started_state_abort_handler, - .parent.complete_handler = scic_sds_request_default_complete_handler, - .parent.destruct_handler = scic_sds_request_default_destruct_handler, - .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler, - .event_handler = scic_sds_request_default_event_handler, - .frame_handler = scic_sds_request_started_state_frame_handler, + .abort_handler = scic_sds_request_started_state_abort_handler, + .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler, + .frame_handler = scic_sds_request_started_state_frame_handler, }, [SCI_BASE_REQUEST_STATE_COMPLETED] = { - .parent.start_handler = scic_sds_request_default_start_handler, - .parent.abort_handler = scic_sds_request_default_abort_handler, - .parent.complete_handler = scic_sds_request_completed_state_complete_handler, - .parent.destruct_handler = scic_sds_request_default_destruct_handler, - .tc_completion_handler = scic_sds_request_default_tc_completion_handler, - .event_handler = scic_sds_request_default_event_handler, - .frame_handler = scic_sds_request_default_frame_handler, + .complete_handler = scic_sds_request_completed_state_complete_handler, }, [SCI_BASE_REQUEST_STATE_ABORTING] = { - .parent.start_handler = scic_sds_request_default_start_handler, - .parent.abort_handler = scic_sds_request_aborting_state_abort_handler, - .parent.complete_handler = scic_sds_request_default_complete_handler, - .parent.destruct_handler = scic_sds_request_default_destruct_handler, - .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler, - .event_handler = scic_sds_request_default_event_handler, - .frame_handler = scic_sds_request_aborting_state_frame_handler, + .abort_handler = scic_sds_request_aborting_state_abort_handler, + .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler, + .frame_handler = scic_sds_request_aborting_state_frame_handler, }, [SCI_BASE_REQUEST_STATE_FINAL] = { - .parent.start_handler = scic_sds_request_default_start_handler, - .parent.abort_handler = scic_sds_request_default_abort_handler, - .parent.complete_handler = scic_sds_request_default_complete_handler, - .parent.destruct_handler = scic_sds_request_default_destruct_handler, - .tc_completion_handler = scic_sds_request_default_tc_completion_handler, - .event_handler = scic_sds_request_default_event_handler, - .frame_handler = scic_sds_request_default_frame_handler, }, }; @@ -1982,13 +1249,12 @@ const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_ta * base request is constructed. Entry into the initial state sets all handlers * for the io request object to their default handlers. none */ -static void scic_sds_request_initial_state_enter( - struct sci_base_object *object) +static void scic_sds_request_initial_state_enter(void *object) { - struct scic_sds_request *this_request = (struct scic_sds_request *)object; + struct scic_sds_request *sci_req = object; SET_STATE_HANDLER( - this_request, + sci_req, scic_sds_request_state_handler_table, SCI_BASE_REQUEST_STATE_INITIAL ); @@ -2002,13 +1268,12 @@ static void scic_sds_request_initial_state_enter( * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers * for the the constructed state. none */ -static void scic_sds_request_constructed_state_enter( - struct sci_base_object *object) +static void scic_sds_request_constructed_state_enter(void *object) { - struct scic_sds_request *this_request = (struct scic_sds_request *)object; + struct scic_sds_request *sci_req = object; SET_STATE_HANDLER( - this_request, + sci_req, scic_sds_request_state_handler_table, SCI_BASE_REQUEST_STATE_CONSTRUCTED ); @@ -2017,19 +1282,18 @@ static void scic_sds_request_constructed_state_enter( /** * scic_sds_request_started_state_enter() - * @object: This parameter specifies the base object for which the state - * transition is occuring. This is cast into a SCIC_SDS_IO_REQUEST object. + * 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( - struct sci_base_object *object) +static void scic_sds_request_started_state_enter(void *object) { - struct scic_sds_request *this_request = (struct scic_sds_request *)object; + struct scic_sds_request *sci_req = object; SET_STATE_HANDLER( - this_request, + sci_req, scic_sds_request_state_handler_table, SCI_BASE_REQUEST_STATE_STARTED ); @@ -2037,33 +1301,32 @@ static void scic_sds_request_started_state_enter( /* * Most of the request state machines have a started substate machine so * start its execution on the entry to the started state. */ - if (this_request->has_started_substate_machine == true) - sci_base_state_machine_start(&this_request->started_substate_machine); + if (sci_req->has_started_substate_machine == true) + sci_base_state_machine_start(&sci_req->started_substate_machine); } /** * scic_sds_request_started_state_exit() - * @object: This parameter specifies the base object for which the state - * transition is occuring. This object is cast into a SCIC_SDS_IO_REQUEST + * 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( - struct sci_base_object *object) +static void scic_sds_request_started_state_exit(void *object) { - struct scic_sds_request *this_request = (struct scic_sds_request *)object; + struct scic_sds_request *sci_req = object; - if (this_request->has_started_substate_machine == true) - sci_base_state_machine_stop(&this_request->started_substate_machine); + if (sci_req->has_started_substate_machine == true) + sci_base_state_machine_stop(&sci_req->started_substate_machine); } /** * scic_sds_request_completed_state_enter() - * @object: This parameter specifies the base object for which the state - * transition is occuring. This object is cast into a SCIC_SDS_IO_REQUEST + * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST * object. * * This method implements the actions taken when entering the @@ -2072,54 +1335,45 @@ static void scic_sds_request_started_state_exit( * completion status and convert it to an enum sci_status to return in the * completion callback function. none */ -static void scic_sds_request_completed_state_enter( - struct sci_base_object *object) +static void scic_sds_request_completed_state_enter(void *object) { - struct scic_sds_request *this_request = (struct scic_sds_request *)object; + struct scic_sds_request *sci_req = object; + struct scic_sds_controller *scic = + scic_sds_request_get_controller(sci_req); + struct isci_host *ihost = scic_to_ihost(scic); + struct isci_request *ireq = sci_req_to_ireq(sci_req); - SET_STATE_HANDLER( - this_request, - scic_sds_request_state_handler_table, - SCI_BASE_REQUEST_STATE_COMPLETED - ); + SET_STATE_HANDLER(sci_req, + scic_sds_request_state_handler_table, + SCI_BASE_REQUEST_STATE_COMPLETED); /* Tell the SCI_USER that the IO request is complete */ - if (this_request->is_task_management_request == false) { - isci_event_io_request_complete( - scic_sds_request_get_controller(this_request), - scic_sds_request_get_device(this_request), - this_request, - this_request->sci_status - ); - } else { - isci_event_task_request_complete( - scic_sds_request_get_controller(this_request), - scic_sds_request_get_device(this_request), - this_request, - this_request->sci_status - ); - } + if (sci_req->is_task_management_request == false) + isci_request_io_request_complete(ihost, + ireq, + sci_req->sci_status); + else + isci_task_request_complete(ihost, ireq, sci_req->sci_status); } /** * scic_sds_request_aborting_state_enter() - * @object: This parameter specifies the base object for which the state - * transition is occuring. This object is cast into a SCIC_SDS_IO_REQUEST + * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST * object. * * This method implements the actions taken when entering the * SCI_BASE_REQUEST_STATE_ABORTING state. none */ -static void scic_sds_request_aborting_state_enter( - struct sci_base_object *object) +static void scic_sds_request_aborting_state_enter(void *object) { - struct scic_sds_request *this_request = (struct scic_sds_request *)object; + struct scic_sds_request *sci_req = object; /* Setting the abort bit in the Task Context is required by the silicon. */ - this_request->task_context_buffer->abort = 1; + sci_req->task_context_buffer->abort = 1; SET_STATE_HANDLER( - this_request, + sci_req, scic_sds_request_state_handler_table, SCI_BASE_REQUEST_STATE_ABORTING ); @@ -2128,27 +1382,24 @@ static void scic_sds_request_aborting_state_enter( /** * scic_sds_request_final_state_enter() - * @object: This parameter specifies the base object for which the state - * transition is occuring. This is cast into a SCIC_SDS_IO_REQUEST object. + * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. * * This method implements the actions taken when entering the * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the * state handlers in place. none */ -static void scic_sds_request_final_state_enter( - struct sci_base_object *object) +static void scic_sds_request_final_state_enter(void *object) { - struct scic_sds_request *this_request = (struct scic_sds_request *)object; + struct scic_sds_request *sci_req = object; SET_STATE_HANDLER( - this_request, + sci_req, scic_sds_request_state_handler_table, SCI_BASE_REQUEST_STATE_FINAL ); } -/* --------------------------------------------------------------------------- */ - -const struct sci_base_state scic_sds_request_state_table[] = { +static const struct sci_base_state scic_sds_request_state_table[] = { [SCI_BASE_REQUEST_STATE_INITIAL] = { .enter_state = scic_sds_request_initial_state_enter, }, @@ -2170,3 +1421,105 @@ const struct sci_base_state scic_sds_request_state_table[] = { }, }; +static void scic_sds_general_request_construct(struct scic_sds_controller *scic, + struct scic_sds_remote_device *sci_dev, + u16 io_tag, struct scic_sds_request *sci_req) +{ + sci_base_state_machine_construct(&sci_req->state_machine, sci_req, + scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL); + sci_base_state_machine_start(&sci_req->state_machine); + + sci_req->io_tag = io_tag; + sci_req->owning_controller = scic; + sci_req->target_device = sci_dev; + sci_req->has_started_substate_machine = false; + sci_req->protocol = SCIC_NO_PROTOCOL; + sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX; + sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev); + + sci_req->sci_status = SCI_SUCCESS; + sci_req->scu_status = 0; + sci_req->post_context = 0xFFFFFFFF; + + sci_req->is_task_management_request = false; + + if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { + sci_req->was_tag_assigned_by_user = false; + sci_req->task_context_buffer = NULL; + } else { + sci_req->was_tag_assigned_by_user = true; + + sci_req->task_context_buffer = + scic_sds_controller_get_task_context_buffer(scic, io_tag); + } +} + +enum sci_status +scic_io_request_construct(struct scic_sds_controller *scic, + struct scic_sds_remote_device *sci_dev, + u16 io_tag, struct scic_sds_request *sci_req) +{ + struct domain_device *dev = sci_dev_to_domain(sci_dev); + enum sci_status status = SCI_SUCCESS; + + /* Build the common part of the request */ + scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); + + if (sci_dev->rnc.remote_node_index == + SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) + return SCI_FAILURE_INVALID_REMOTE_DEVICE; + + if (dev->dev_type == SAS_END_DEV) + scic_sds_ssp_io_request_assign_buffers(sci_req); + else if ((dev->dev_type == SATA_DEV) || + (dev->tproto & SAS_PROTOCOL_STP)) { + scic_sds_stp_request_assign_buffers(sci_req); + memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd)); + } else if (dev_is_expander(dev)) { + scic_sds_smp_request_assign_buffers(sci_req); + memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd)); + } else + status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; + + if (status == SCI_SUCCESS) { + memset(sci_req->task_context_buffer, 0, + offsetof(struct scu_task_context, sgl_pair_ab)); + } + + return status; +} + +enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, + struct scic_sds_remote_device *sci_dev, + u16 io_tag, struct scic_sds_request *sci_req) +{ + struct domain_device *dev = sci_dev_to_domain(sci_dev); + enum sci_status status = SCI_SUCCESS; + + /* Build the common part of the request */ + scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); + + if (dev->dev_type == SAS_END_DEV) { + scic_sds_ssp_task_request_assign_buffers(sci_req); + + sci_req->has_started_substate_machine = true; + + /* Construct the started sub-state machine. */ + sci_base_state_machine_construct( + &sci_req->started_substate_machine, + sci_req, + scic_sds_io_request_started_task_mgmt_substate_table, + SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION + ); + } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) + scic_sds_stp_request_assign_buffers(sci_req); + else + status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; + + if (status == SCI_SUCCESS) { + sci_req->is_task_management_request = true; + memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context)); + } + + return status; +}