d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
021a0db52e
freebsd-skq/sys/dev/isci/scil/scic_sds_smp_request.c
Jim Harris f11c7f6305 Add isci(4) driver for amd64 and i386 targets. 
The isci driver is for the integrated SAS controller in the Intel C600
(Patsburg) chipset.  Source files in sys/dev/isci directory are
FreeBSD-specific, and sys/dev/isci/scil subdirectory contains
an OS-agnostic library (SCIL) published by Intel to control the SAS
controller.  This library is used primarily as-is in this driver, with
some post-processing to better integrate into the kernel build
environment.

isci.4 and a README in the sys/dev/isci directory contain a few
additional details.

This driver is only built for amd64 and i386 targets.

Sponsored by: Intel
Reviewed by: scottl
Approved by: scottl
2012-01-31 19:38:18 +00:00

873 lines
30 KiB
C
Raw Blame History

/*-
* 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.
*
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/isci/scil/scic_sds_smp_request.h>
#include <dev/isci/scil/scic_sds_logger.h>
#include <dev/isci/scil/scic_sds_controller.h>
#include <dev/isci/scil/scic_sds_remote_device.h>
#include <dev/isci/scil/scic_remote_device.h>
#include <dev/isci/scil/sci_util.h>
#include <dev/isci/sci_environment.h>
#include <dev/isci/scil/intel_sas.h>
#include <dev/isci/scil/scic_sds_request.h>
#include <dev/isci/scil/scic_controller.h>
#include <dev/isci/scil/scu_completion_codes.h>
#include <dev/isci/scil/scu_task_context.h>
#include <dev/isci/scil/sci_base_state_machine.h>
/**
* This method return the memory space required for STP PIO requests.
*
* @return U32
*/
U32 scic_sds_smp_request_get_object_size(void)
{
return sizeof(SCIC_SDS_REQUEST_T)
+ sizeof(SMP_REQUEST_T)
+ sizeof(U32)
+ sizeof(SMP_RESPONSE_T)
+ sizeof(U32)
+ sizeof(SCU_TASK_CONTEXT_T)
+ CACHE_LINE_SIZE;
}
/**
* This macro returns the address of the smp command buffer in the smp request
* memory. No need to cast to SMP request type.
*/
#define scic_sds_smp_request_get_command_buffer_unaligned(memory) \
( ((char *)(memory)) + sizeof(SCIC_SDS_REQUEST_T) )
/**
* This macro aligns the smp command buffer in DWORD alignment
*/
#define scic_sds_smp_request_align_command_buffer(address) \
((char *)( \
(((POINTER_UINT)(address)) + (sizeof(U32) - 1)) \
& ~(sizeof(U32)- 1) \
))
/**
* This macro returns the DWORD-aligned smp command buffer
*/
#define scic_sds_smp_request_get_command_buffer(memory) \
((char *) \
((char *)scic_sds_smp_request_align_command_buffer( \
(char *) scic_sds_smp_request_get_command_buffer_unaligned(memory) \
)))
/**
* This macro returns the address of the smp response buffer in the smp request
* memory.
*/
#define scic_sds_smp_request_get_response_buffer_unaligned(memory) \
( ((char *)(scic_sds_smp_request_get_command_buffer(memory))) \
+ sizeof(SMP_REQUEST_T) )
/**
* This macro aligns the smp command buffer in DWORD alignment
*/
#define scic_sds_smp_request_align_response_buffer(address) \
((char *)( \
(((POINTER_UINT)(address)) + (sizeof(U32) - 1)) \
& ~(sizeof(U32)- 1) \
))
/**
* This macro returns the DWORD-aligned smp resposne buffer
*/
#define scic_sds_smp_request_get_response_buffer(memory) \
((char *) \
((char *)scic_sds_smp_request_align_response_buffer( \
(char *) scic_sds_smp_request_get_response_buffer_unaligned(memory) \
)))
/**
* This macro returs the task context buffer for the SMP request.
*/
#define scic_sds_smp_request_get_task_context_buffer_unaligned(memory) \
((SCU_TASK_CONTEXT_T *)( \
((char *)(scic_sds_smp_request_get_response_buffer(memory))) \
+ sizeof(SMP_RESPONSE_T) \
))
/**
* This macro returns the dword-aligned smp task context buffer
*/
#define scic_sds_smp_request_get_task_context_buffer(memory) \
((SCU_TASK_CONTEXT_T *)( \
((char *)scic_sds_request_align_task_context_buffer( \
(char *)scic_sds_smp_request_get_task_context_buffer_unaligned(memory)) \
)))
/**
* @brief This method build the remainder of the IO request object.
*
* @pre The scic_sds_general_request_construct() must be called before this
* call is valid.
*
* @param[in] this_request This parameter specifies the request object being
* constructed.
*
* @return none
*/
void scic_sds_smp_request_assign_buffers(
SCIC_SDS_REQUEST_T *this_request
)
{
// Assign all of the buffer pointers
this_request->command_buffer =
scic_sds_smp_request_get_command_buffer(this_request);
this_request->response_buffer =
scic_sds_smp_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_smp_request_get_task_context_buffer(this_request);
}
}
/**
* @brief This method is called by the SCI user to build an SMP
* IO request.
*
* @pre
* - The user must have previously called scic_io_request_construct()
* on the supplied IO request.
*
* @param[in] scic_io_request This parameter specifies the handle to the
* io request object to be built.
*
* @return Indicate if the controller successfully built the IO request.
* @retval SCI_SUCCESS This value is returned if the IO request was
* successfully built.
* @retval SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned if the
* remote_device does not support the SMP protocol.
* @retval SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the
* user did not properly set the association between the SCIC IO
* request and the user's IO request. Please refer to the
* sci_object_set_association() routine for more
* information.
*/
SCI_STATUS scic_io_request_construct_smp(
SCI_IO_REQUEST_HANDLE_T scic_smp_request
)
{
SMP_REQUEST_T smp_request;
SCIC_SDS_REQUEST_T *this_request = (SCIC_SDS_REQUEST_T *) scic_smp_request;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_request),
SCIC_LOG_OBJECT_SMP_IO_REQUEST,
"scic_io_request_construct_smp(0x%x) enter\n",
this_request
));
this_request->protocol = SCIC_SMP_PROTOCOL;
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_smp_request_started_substate_table,
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
);
// Construct the SMP SCU Task Context
memcpy((char *)&smp_request,
this_request->command_buffer,
sizeof(SMP_REQUEST_T));
// Look at the SMP requests' header fields; for certain SAS 1.x SMP
// functions under SAS 2.0, a zero request length really indicates
// a non-zero default length.
if( smp_request.header.request_length == 0 )
{
switch( smp_request.header.function )
{
case SMP_FUNCTION_DISCOVER:
case SMP_FUNCTION_REPORT_PHY_ERROR_LOG:
case SMP_FUNCTION_REPORT_PHY_SATA:
case SMP_FUNCTION_REPORT_ROUTE_INFORMATION:
smp_request.header.request_length = 2;
break;
case SMP_FUNCTION_CONFIGURE_ROUTE_INFORMATION:
case SMP_FUNCTION_PHY_CONTROL:
case SMP_FUNCTION_PHY_TEST:
smp_request.header.request_length = 9;
break;
// Default - zero is a valid default for 2.0.
}
}
scu_smp_request_construct_task_context(
this_request,
&smp_request
);
sci_base_state_machine_change_state(
&this_request->parent.state_machine,
SCI_BASE_REQUEST_STATE_CONSTRUCTED
);
return SCI_SUCCESS;
}
/**
* @brief This method is called by the SCI user to build an SMP pass-through
* IO request.
*
* @pre
* - The user must have previously called scic_io_request_construct()
* on the supplied IO request.
*
* @param[in] scic_smp_request This parameter specifies the handle to the
* io request object to be built.
*
* @param[in] passthru_cb This parameter specifies the pointer to the callback
* structure that contains the function pointers
*
* @return Indicate if the controller successfully built the IO request.
*/
SCI_STATUS scic_io_request_construct_smp_pass_through(
SCI_IO_REQUEST_HANDLE_T scic_smp_request,
SCIC_SMP_PASSTHRU_REQUEST_CALLBACKS_T *passthru_cb
)
{
SMP_REQUEST_T smp_request;
U8 * request_buffer;
U32 request_buffer_length_in_bytes;
SCIC_SDS_REQUEST_T *this_request = (SCIC_SDS_REQUEST_T *) scic_smp_request;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_request),
SCIC_LOG_OBJECT_SMP_IO_REQUEST,
"scic_io_request_construct_smp_pass_through(0x%x) enter\n",
this_request
));
this_request->protocol = SCIC_SMP_PROTOCOL;
this_request->has_started_substate_machine = TRUE;
// Call the callback function to retrieve the SMP passthrough request
request_buffer_length_in_bytes = passthru_cb->scic_cb_smp_passthru_get_request (
(void *)this_request,
&request_buffer
);
//copy the request to smp request
memcpy((char *)&smp_request.request.vendor_specific_request,
request_buffer,
request_buffer_length_in_bytes);
//the header length in smp_request is in dwords - the sas spec has similar way,
//but the csmi header contains the number of bytes, so we need to convert the
//number of bytes to number of dwords
smp_request.header.request_length = (U8) (request_buffer_length_in_bytes / sizeof (U32));
//Grab the other needed fields from the smp request using callbacks
smp_request.header.smp_frame_type = passthru_cb->scic_cb_smp_passthru_get_frame_type ((void *)this_request);
smp_request.header.function = passthru_cb->scic_cb_smp_passthru_get_function ((void *)this_request);
smp_request.header.allocated_response_length = passthru_cb->scic_cb_smp_passthru_get_allocated_response_length((void *)this_request);
// Construct the started sub-state machine.
sci_base_state_machine_construct(
&this_request->started_substate_machine,
&this_request->parent.parent,
scic_sds_smp_request_started_substate_table,
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
);
// Construct the SMP SCU Task Context
scu_smp_request_construct_task_context (this_request, &smp_request);
sci_base_state_machine_change_state(
&this_request->parent.state_machine,
SCI_BASE_REQUEST_STATE_CONSTRUCTED
);
return SCI_SUCCESS;
}
/**
* @brief This method will fill in the SCU Task Context for a SMP request. The
* following important settings are utilized:
*
* -# task_type == SCU_TASK_TYPE_SMP. This simply indicates
* that a normal request type (i.e. non-raw frame) is being
* utilized to perform task management.
* -# control_frame == 1. This ensures that the proper endianess
* is set so that the bytes are transmitted in the right order
* for a smp request frame.
*
* @param[in] this_request This parameter specifies the smp request object
* being constructed.
*
* @return none
*/
void scu_smp_request_construct_task_context(
SCIC_SDS_REQUEST_T *this_request,
SMP_REQUEST_T *smp_request
)
{
SCI_PHYSICAL_ADDRESS physical_address;
SCIC_SDS_CONTROLLER_T *owning_controller;
SCIC_SDS_REMOTE_DEVICE_T *target_device;
SCIC_SDS_PORT_T *target_port;
SCU_TASK_CONTEXT_T *task_context;
//byte swap the smp request.
scic_word_copy_with_swap(
this_request->command_buffer,
(U32*) smp_request,
sizeof(SMP_REQUEST_T)/sizeof(U32)
);
task_context = scic_sds_request_get_task_context(this_request);
owning_controller = scic_sds_request_get_controller(this_request);
target_device = scic_sds_request_get_device(this_request);
target_port = scic_sds_request_get_port(this_request);
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_request),
SCIC_LOG_OBJECT_SMP_IO_REQUEST,
"scu_smp_request_construct_task_context(0x%x) contents\n"
" reqlen=%x; function=%x;\n",
this_request,
smp_request->header.request_length,
smp_request->header.function
));
// Fill in the TC with the its required data
// 00h
task_context->priority = 0;
task_context->initiator_request = 1;
task_context->connection_rate =
scic_remote_device_get_connection_rate(target_device);
task_context->protocol_engine_index =
scic_sds_controller_get_protocol_engine_group(owning_controller);
task_context->logical_port_index =
scic_sds_port_get_index(target_port);
task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SMP;
task_context->abort = 0;
task_context->valid = SCU_TASK_CONTEXT_VALID;
task_context->context_type = SCU_TASK_CONTEXT_TYPE;
//04h
task_context->remote_node_index = this_request->target_device->rnc->remote_node_index;
task_context->command_code = 0;
task_context->task_type = SCU_TASK_TYPE_SMP_REQUEST;
//08h
task_context->link_layer_control = 0;
task_context->do_not_dma_ssp_good_response = 1;
task_context->strict_ordering = 0;
task_context->control_frame = 1;
task_context->timeout_enable = 0;
task_context->block_guard_enable = 0;
//0ch
task_context->address_modifier = 0;
//10h
task_context->ssp_command_iu_length = smp_request->header.request_length;
//14h
task_context->transfer_length_bytes = 0;
//18h ~ 30h, protocol specific
// since commandIU has been build by framework at this point, we just
// copy the frist DWord from command IU to this location.
memcpy((void *)(&task_context->type.smp), this_request->command_buffer, sizeof(U32) );
//40h
// "For SMP you could program it to zero. We would prefer that way so that
// done code will be consistent." - Venki
task_context->task_phase = 0;
if (this_request->was_tag_assigned_by_user)
{
// Build the task context now since we have already read the data
this_request->post_context = (
SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC
| (
scic_sds_controller_get_protocol_engine_group(owning_controller)
<< SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT
)
| (
scic_sds_port_get_index(target_port)
<< SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT
)
| scic_sds_io_tag_get_index(this_request->io_tag)
);
}
else
{
// Build the task context now since we have already read the data
this_request->post_context = (
SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC
| (
scic_sds_controller_get_protocol_engine_group(owning_controller)
<< SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT
)
| (
scic_sds_port_get_index(target_port)
<< SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT
)
// This is not assigned because we have to wait until we get a TCi
);
}
// Copy the physical address for the command buffer to the SCU Task Context
// command buffer should not contain command header.
scic_cb_io_request_get_physical_address(
scic_sds_request_get_controller(this_request),
this_request,
((char *)(this_request->command_buffer) + sizeof(U32)),
&physical_address
);
task_context->command_iu_upper =
sci_cb_physical_address_upper(physical_address);
task_context->command_iu_lower =
sci_cb_physical_address_lower(physical_address);
//SMP response comes as UF, so no need to set response IU address.
task_context->response_iu_upper = 0;
task_context->response_iu_lower = 0;
}
//******************************************************************************
//* SMP REQUEST STATE MACHINE
//******************************************************************************
/**
* @brief This method processes an unsolicited frame while the SMP request is
* waiting for a response frame. It will copy the response data, release
* the unsolicited frame, and transition the request to the
* SCI_BASE_REQUEST_STATE_COMPLETED state.
*
* @param[in] this_request This parameter specifies the request for which
* the unsolicited frame was received.
* @param[in] frame_index This parameter indicates the unsolicited frame
* index that should contain the response.
*
* @return This method returns an indication of whether the response
* frame was handled successfully or not.
* @retval SCI_SUCCESS Currently this value is always returned and indicates
* successful processing of the TC response.
*/
static
SCI_STATUS scic_sds_smp_request_await_response_frame_handler(
SCIC_SDS_REQUEST_T * this_request,
U32 frame_index
)
{
SCI_STATUS status;
void * frame_header;
SMP_RESPONSE_HEADER_T * this_frame_header;
U8 * user_smp_buffer = this_request->response_buffer;
// Save off the controller, so that we do not touch the request after it
// is completed.
SCIC_SDS_CONTROLLER_T * controller = scic_sds_request_get_controller(this_request);
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_request),
SCIC_LOG_OBJECT_SMP_IO_REQUEST,
"scic_sds_smp_request_await_response_frame_handler(0x%x, 0x%x) enter\n",
this_request, frame_index
));
status = scic_sds_unsolicited_frame_control_get_header(
&(controller->uf_control),
frame_index,
&frame_header
);
//byte swap the header.
scic_word_copy_with_swap(
(U32*) user_smp_buffer,
frame_header,
sizeof(SMP_RESPONSE_HEADER_T)/sizeof(U32)
);
this_frame_header = (SMP_RESPONSE_HEADER_T*) user_smp_buffer;
if (this_frame_header->smp_frame_type == SMP_FRAME_TYPE_RESPONSE)
{
void * smp_response_buffer;
status = scic_sds_unsolicited_frame_control_get_buffer(
&(controller->uf_control),
frame_index,
&smp_response_buffer
);
scic_word_copy_with_swap(
(U32*) (user_smp_buffer + sizeof(SMP_RESPONSE_HEADER_T)),
smp_response_buffer,
sizeof(SMP_RESPONSE_BODY_T)/sizeof(U32)
);
if (this_frame_header->function == SMP_FUNCTION_DISCOVER)
{
SMP_RESPONSE_T * this_smp_response;
this_smp_response = (SMP_RESPONSE_T *)user_smp_buffer;
// Some expanders only report an attached SATA device, and
// not an STP target. Since the core depends on the STP
// target attribute to correctly build I/O, set the bit now
// if necessary.
if (this_smp_response->response.discover.protocols.u.bits.attached_sata_device
&& !this_smp_response->response.discover.protocols.u.bits.attached_stp_target)
{
this_smp_response->response.discover.protocols.u.bits.attached_stp_target = 1;
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_request),
SCIC_LOG_OBJECT_SMP_IO_REQUEST,
"scic_sds_smp_request_await_response_frame_handler(0x%x) Found SATA dev, setting STP bit.\n",
this_request
));
}
}
//Don't need to copy to user space. User instead will refer to
//core request's response buffer.
//copy the smp response to framework smp request's response buffer.
//scic_sds_smp_request_copy_response(this_request);
scic_sds_request_set_status(
this_request, SCU_TASK_DONE_GOOD, SCI_SUCCESS
);
sci_base_state_machine_change_state(
&this_request->started_substate_machine,
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION
);
}
else
{
// This was not a response frame why did it get forwarded?
SCIC_LOG_ERROR((
sci_base_object_get_logger(this_request),
SCIC_LOG_OBJECT_SMP_IO_REQUEST,
"SCIC SMP Request 0x%08x received unexpected frame %d type 0x%02x\n",
this_request, frame_index, this_frame_header->smp_frame_type
));
scic_sds_request_set_status(
this_request,
SCU_TASK_DONE_SMP_FRM_TYPE_ERR,
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
);
sci_base_state_machine_change_state(
&this_request->parent.state_machine,
SCI_BASE_REQUEST_STATE_COMPLETED
);
}
scic_sds_controller_release_frame(
controller, frame_index
);
return SCI_SUCCESS;
}
/**
* @brief This method processes an abnormal TC completion while the SMP
* request is waiting for a response frame. It decides what
* happened to the IO based on TC completion status.
*
* @param[in] this_request This parameter specifies the request for which
* the TC completion was received.
* @param[in] completion_code This parameter indicates the completion status
* information for the TC.
*
* @return Indicate if the tc completion handler was successful.
* @retval SCI_SUCCESS currently this method always returns success.
*/
static
SCI_STATUS scic_sds_smp_request_await_response_tc_completion_handler(
SCIC_SDS_REQUEST_T * this_request,
U32 completion_code
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_request),
SCIC_LOG_OBJECT_SMP_IO_REQUEST,
"scic_sds_smp_request_await_response_tc_completion_handler(0x%x, 0x%x) enter\n",
this_request, completion_code
));
switch (SCU_GET_COMPLETION_TL_STATUS(completion_code))
{
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
//In the AWAIT RESPONSE state, any TC completion is unexpected.
//but if the TC has success status, we complete the IO anyway.
scic_sds_request_set_status(
this_request, SCU_TASK_DONE_GOOD, SCI_SUCCESS
);
sci_base_state_machine_change_state(
&this_request->parent.state_machine,
SCI_BASE_REQUEST_STATE_COMPLETED
);
break;
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
//These status has been seen in a specific LSI expander, which sometimes
//is not able to send smp response within 2 ms. This causes our hardware
//break the connection and set TC completion with one of these SMP_XXX_XX_ERR
//status. For these type of error, we ask scic user to retry the request.
scic_sds_request_set_status(
this_request, SCU_TASK_DONE_SMP_RESP_TO_ERR, SCI_FAILURE_RETRY_REQUIRED
);
sci_base_state_machine_change_state(
&this_request->parent.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(
this_request,
SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
);
sci_base_state_machine_change_state(
&this_request->parent.state_machine,
SCI_BASE_REQUEST_STATE_COMPLETED
);
break;
}
return SCI_SUCCESS;
}
/**
* @brief 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.
*
* @param[in] this_request This parameter specifies the request for which
* the TC completion was received.
* @param[in] completion_code This parameter indicates the completion status
* information for the TC.
*
* @return Indicate if the tc completion handler was successful.
* @retval SCI_SUCCESS currently this method always returns success.
*/
static
SCI_STATUS scic_sds_smp_request_await_tc_completion_tc_completion_handler(
SCIC_SDS_REQUEST_T * this_request,
U32 completion_code
)
{
SCIC_LOG_TRACE((
sci_base_object_get_logger(this_request),
SCIC_LOG_OBJECT_SMP_IO_REQUEST,
"scic_sds_smp_request_await_tc_completion_tc_completion_handler(0x%x, 0x%x) enter\n",
this_request, completion_code
));
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
);
sci_base_state_machine_change_state(
&this_request->parent.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(
this_request,
SCU_NORMALIZE_COMPLETION_STATUS(completion_code),
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR
);
sci_base_state_machine_change_state(
&this_request->parent.state_machine,
SCI_BASE_REQUEST_STATE_COMPLETED
);
break;
}
return SCI_SUCCESS;
}
SCIC_SDS_IO_REQUEST_STATE_HANDLER_T
scic_sds_smp_request_started_substate_handler_table
[SCIC_SDS_SMP_REQUEST_STARTED_MAX_SUBSTATES] =
{
// SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
{
{
scic_sds_request_default_start_handler,
scic_sds_request_started_state_abort_handler,
scic_sds_request_default_complete_handler,
scic_sds_request_default_destruct_handler
},
scic_sds_smp_request_await_response_tc_completion_handler,
scic_sds_request_default_event_handler,
scic_sds_smp_request_await_response_frame_handler
},
// SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION
{
{
scic_sds_request_default_start_handler,
scic_sds_request_started_state_abort_handler,
scic_sds_request_default_complete_handler,
scic_sds_request_default_destruct_handler
},
scic_sds_smp_request_await_tc_completion_tc_completion_handler,
scic_sds_request_default_event_handler,
scic_sds_request_default_frame_handler
}
};
/**
* @brief This method performs the actions required when entering the
* SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_RESPONSE sub-state.
* This includes setting the IO request state handlers for this
* sub-state.
*
* @param[in] object This parameter specifies the request object for which
* the sub-state change is occuring.
*
* @return none.
*/
static
void scic_sds_smp_request_started_await_response_substate_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_REQUEST_T *this_request = (SCIC_SDS_REQUEST_T *)object;
SET_STATE_HANDLER(
this_request,
scic_sds_smp_request_started_substate_handler_table,
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE
);
}
/**
* @brief This method performs the actions required when entering the
* SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION
* sub-state. This includes setting the SMP request state handlers for
* this sub-state.
*
* @param[in] object This parameter specifies the request object for which
* the sub-state change is occuring.
*
* @return none.
*/
static
void scic_sds_smp_request_started_await_tc_completion_substate_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIC_SDS_REQUEST_T *this_request = (SCIC_SDS_REQUEST_T *)object;
SET_STATE_HANDLER(
this_request,
scic_sds_smp_request_started_substate_handler_table,
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION
);
}
SCI_BASE_STATE_T scic_sds_smp_request_started_substate_table
[SCIC_SDS_SMP_REQUEST_STARTED_MAX_SUBSTATES] =
{
{
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
scic_sds_smp_request_started_await_response_substate_enter,
NULL
},
{
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
scic_sds_smp_request_started_await_tc_completion_substate_enter,
NULL
}
};
Reference in New Issue View Git Blame Copy Permalink