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| Current File : //sys/dev/isci/scil/scif_sas_stp_io_request.c |
/*-
* 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: release/9.1.0/sys/dev/isci/scil/scif_sas_stp_io_request.c 239741 2012-08-27 18:10:25Z jimharris $");
/**
* @file
*
* @brief This file contains the method implementations for the
* SCIF_SAS_STP_IO_REQUEST object. The contents will implement
* SATA/STP specific functionality.
*/
#include <dev/isci/scil/scif_sas_stp_io_request.h>
#include <dev/isci/scil/scif_sas_stp_remote_device.h>
#include <dev/isci/scil/scif_sas_logger.h>
#include <dev/isci/scil/scif_sas_controller.h>
#include <dev/isci/scil/sci_status.h>
#include <dev/isci/scil/scic_io_request.h>
#include <dev/isci/scil/sati.h>
#include <dev/isci/scil/sati_atapi.h>
#include <dev/isci/scil/intel_sat.h>
#include <dev/isci/scil/sati_util.h>
#include <dev/isci/scil/sati_callbacks.h>
//******************************************************************************
// P R I V A T E M E T H O D S
//******************************************************************************
/**
* @brief This method provides SATA/STP CONSTRUCTED state specific handling
* for when the user attempts to start the supplied IO request. It
* will allocate NCQ tags if necessary.
*
* @param[in] io_request This parameter specifies the IO request object
* to be started.
*
* @return This method returns a value indicating if the IO request was
* successfully started or not.
* @retval SCI_SUCCESS This return value indicates successful starting
* of the IO request.
*/
static
SCI_STATUS scif_sas_stp_io_request_constructed_start_handler(
SCI_BASE_REQUEST_T * io_request
)
{
SCIF_SAS_IO_REQUEST_T * fw_io = (SCIF_SAS_IO_REQUEST_T *) io_request;
SCIF_LOG_TRACE((
sci_base_object_get_logger(io_request),
SCIF_LOG_OBJECT_IO_REQUEST,
"scif_sas_stp_io_request_constructed_start_handler(0x%x) enter\n",
io_request
));
if (fw_io->parent.stp.sequence.protocol == SAT_PROTOCOL_FPDMA)
{
SATA_FIS_REG_H2D_T * fis;
// For NCQ, we need to attempt to allocate an available tag.
fw_io->parent.stp.ncq_tag = scif_sas_stp_remote_device_allocate_ncq_tag(
fw_io->parent.device
);
if (fw_io->parent.stp.ncq_tag == SCIF_SAS_INVALID_NCQ_TAG)
return SCI_FAILURE_NO_NCQ_TAG_AVAILABLE;
// Set the NCQ tag in the host to device register FIS (upper 5 bits
// of the 8-bit sector count register).
fis = scic_stp_io_request_get_h2d_reg_address(fw_io->parent.core_object);
fis->sector_count = (fw_io->parent.stp.ncq_tag << 3);
// The Core also requires that we inform it separately regarding the
// NCQ tag for this IO.
scic_stp_io_request_set_ncq_tag(
fw_io->parent.core_object, fw_io->parent.stp.ncq_tag
);
}
return SCI_SUCCESS;
}
/**
* @brief This method provides SATA/STP CONSTRUCTED state specific handling
* for when the user attempts to complete the supplied IO request.
* This method will be invoked in the event the call to start the
* core IO request fails for some reason. In this situation, the
* NCQ tag will be freed.
*
* @param[in] io_request This parameter specifies the IO request object
* to be started.
*
* @return This method returns a value indicating if the IO request was
* successfully started or not.
* @retval SCI_SUCCESS This return value indicates successful starting
* of the IO request.
*/
static
SCI_STATUS scif_sas_stp_io_request_constructed_complete_handler(
SCI_BASE_REQUEST_T * io_request
)
{
SCIF_SAS_IO_REQUEST_T * fw_io = (SCIF_SAS_IO_REQUEST_T *) io_request;
SCIF_LOG_TRACE((
sci_base_object_get_logger(io_request),
SCIF_LOG_OBJECT_IO_REQUEST,
"scif_sas_stp_io_request_constructed_complete_handler(0x%x) enter\n",
io_request
));
if (fw_io->parent.stp.sequence.protocol == SAT_PROTOCOL_FPDMA)
{
// For NCQ, we need to return the tag back to the free pool.
if (fw_io->parent.stp.ncq_tag != SCIF_SAS_INVALID_NCQ_TAG)
scif_sas_stp_remote_device_free_ncq_tag(
fw_io->parent.device, fw_io->parent.stp.ncq_tag
);
}
sati_sequence_terminate(&fw_io->parent.stp.sequence, fw_io, fw_io);
return SCI_SUCCESS;
}
/**
* @brief This method provides SATA/STP STARTED state specific handling for
* when the user attempts to complete the supplied IO request.
* It will perform data/response translation and free NCQ tags
* if necessary.
*
* @param[in] io_request This parameter specifies the IO request object
* to be started.
*
* @return This method returns a value indicating if the IO request was
* successfully completed or not.
*/
static
SCI_STATUS scif_sas_stp_core_cb_io_request_complete_handler(
SCIF_SAS_CONTROLLER_T * fw_controller,
SCIF_SAS_REMOTE_DEVICE_T * fw_device,
SCIF_SAS_REQUEST_T * fw_request,
SCI_STATUS * completion_status
)
{
SCIF_SAS_IO_REQUEST_T * fw_io = (SCIF_SAS_IO_REQUEST_T *) fw_request;
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_controller),
SCIF_LOG_OBJECT_IO_REQUEST,
"scif_sas_stp_core_cb_io_request_complete_handler(0x%x, 0x%x, 0x%x, 0x%x) enter\n",
fw_controller, fw_device, fw_request, *completion_status
));
if (fw_io->parent.stp.sequence.protocol == SAT_PROTOCOL_FPDMA)
scif_sas_stp_remote_device_free_ncq_tag(
fw_request->device, fw_io->parent.stp.ncq_tag
);
// Translating the response is only necessary if:
// - some sort of error occurred resulting in having the error bit
// set in the ATA status register and values to decode in the
// ATA error register.
// - the command returns information in the register FIS itself,
// which requires translation.
// - the request completed ok but the sequence requires a callback
// to possibly continue the translation
if ((*completion_status == SCI_FAILURE_IO_RESPONSE_VALID) ||
((sati_cb_do_translate_response(fw_request)) &&
(*completion_status != SCI_FAILURE_IO_TERMINATED)))
{
SATI_STATUS sati_status = sati_translate_command_response(
&fw_io->parent.stp.sequence, fw_io, fw_io
);
if (sati_status == SATI_COMPLETE)
*completion_status = SCI_SUCCESS;
else if (sati_status == SATI_FAILURE_CHECK_RESPONSE_DATA)
*completion_status = SCI_FAILURE_IO_RESPONSE_VALID;
else if (sati_status == SATI_SEQUENCE_INCOMPLETE)
{
// The translation indicates that additional SATA requests are
// necessary to finish the original SCSI request. As a result,
// do not complete the IO and begin the next stage of the
// translation.
return SCI_WARNING_SEQUENCE_INCOMPLETE;
}
else if (sati_status == SATI_COMPLETE_IO_DONE_EARLY)
*completion_status = SCI_SUCCESS_IO_DONE_EARLY;
else
{
// Something unexpected occurred during translation. Fail the
// IO request to the user.
*completion_status = SCI_FAILURE;
}
}
else if (*completion_status != SCI_SUCCESS)
{
SCIF_LOG_INFO((
sci_base_object_get_logger(fw_controller),
SCIF_LOG_OBJECT_IO_REQUEST,
"Sequence Terminated(0x%x, 0x%x, 0x%x)\n",
fw_controller, fw_device, fw_request
));
sati_sequence_terminate(&fw_io->parent.stp.sequence, fw_io, fw_io);
}
return SCI_SUCCESS;
}
#if !defined(DISABLE_ATAPI)
/**
* @brief This method provides STP PACKET io request STARTED state specific handling for
* when the user attempts to complete the supplied IO request.
* It will perform data/response translation.
*
* @param[in] io_request This parameter specifies the IO request object
* to be started.
*
* @return This method returns a value indicating if the IO request was
* successfully completed or not.
*/
static
SCI_STATUS scif_sas_stp_core_cb_packet_io_request_complete_handler(
SCIF_SAS_CONTROLLER_T * fw_controller,
SCIF_SAS_REMOTE_DEVICE_T * fw_device,
SCIF_SAS_REQUEST_T * fw_request,
SCI_STATUS * completion_status
)
{
SCIF_SAS_IO_REQUEST_T * fw_io = (SCIF_SAS_IO_REQUEST_T *) fw_request;
SATI_STATUS sati_status;
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_controller),
SCIF_LOG_OBJECT_IO_REQUEST,
"scif_sas_stp_packet_core_cb_io_request_complete_handler(0x%x, 0x%x, 0x%x, 0x%x) enter\n",
fw_controller, fw_device, fw_request, *completion_status
));
if (*completion_status == SCI_FAILURE_IO_RESPONSE_VALID)
{
sati_status = sati_atapi_translate_command_response(
&fw_io->parent.stp.sequence, fw_io, fw_io
);
if (sati_status == SATI_COMPLETE)
*completion_status = SCI_SUCCESS;
else if (sati_status == SATI_FAILURE_CHECK_RESPONSE_DATA)
*completion_status = SCI_FAILURE_IO_RESPONSE_VALID;
else if (sati_status == SATI_SEQUENCE_INCOMPLETE)
{
// The translation indicates that additional REQUEST SENSE command is
// necessary to finish the original SCSI request. As a result,
// do not complete the IO and begin the next stage of the IO.
return SCI_WARNING_SEQUENCE_INCOMPLETE;
}
else
{
// Something unexpected occurred during translation. Fail the
// IO request to the user.
*completion_status = SCI_FAILURE;
}
}
else if (*completion_status == SCI_SUCCESS &&
fw_request->stp.sequence.state == SATI_SEQUENCE_STATE_INCOMPLETE)
{
//The internal Request Sense command is completed successfully.
sati_atapi_translate_request_sense_response(
&fw_io->parent.stp.sequence, fw_io, fw_io
);
*completion_status = SCI_FAILURE_IO_RESPONSE_VALID;
}
return SCI_SUCCESS;
}
#endif // !defined(DISABLE_ATAPI)
//******************************************************************************
// P R O T E C T E D M E T H O D S
//******************************************************************************
/**
* @brief This method will construct the SATA/STP specific IO request
* object utilizing the SATI.
*
* @pre The scif_sas_request_construct() method should be invoked before
* calling this method.
*
* @param[in,out] stp_io_request This parameter specifies the stp_io_request
* to be constructed.
*
* @return Indicate if the construction was successful.
* @return SCI_FAILURE_NO_NCQ_TAG_AVAILABLE
* @return SCI_SUCCESS_IO_COMPLETE_BEFORE_START
* @return SCI_FAILURE_IO_RESPONSE_VALID
* @return SCI_FAILURE This return value indicates a change in the translator
* where a new return code has been given, but is not yet understood
* by this routine.
*/
SCI_STATUS scif_sas_stp_io_request_construct(
SCIF_SAS_IO_REQUEST_T * fw_io
)
{
SATI_STATUS sati_status;
SCI_STATUS sci_status = SCI_FAILURE;
SCIF_SAS_REMOTE_DEVICE_T * fw_device = fw_io->parent.device;
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_io),
SCIF_LOG_OBJECT_IO_REQUEST,
"scif_sas_stp_io_request_construct(0x%x) enter\n",
fw_io
));
// The translator will indirectly invoke core methods to set the fields
// of the ATA register FIS inside of this method.
sati_status = sati_translate_command(
&fw_io->parent.stp.sequence,
&fw_device->protocol_device.stp_device.sati_device,
fw_io,
fw_io
);
if (sati_status == SATI_SUCCESS)
{
// Allow the core to finish construction of the IO request.
sci_status = scic_io_request_construct_basic_sata(fw_io->parent.core_object);
fw_io->parent.state_handlers = &stp_io_request_constructed_handlers;
fw_io->parent.protocol_complete_handler
= scif_sas_stp_core_cb_io_request_complete_handler;
}
else if (sati_status == SATI_SUCCESS_SGL_TRANSLATED)
{
SCIC_IO_SATA_PARAMETERS_T parms;
parms.do_translate_sgl = FALSE;
// The translation actually already caused translation of the
// scatter gather list. So, call into the core through an API
// that will not attempt to translate the SGL.
scic_io_request_construct_advanced_sata(
fw_io->parent.core_object, &parms
);
fw_io->parent.state_handlers = &stp_io_request_constructed_handlers;
fw_io->parent.protocol_complete_handler
= scif_sas_stp_core_cb_io_request_complete_handler;
// Done with translation
sci_status = SCI_SUCCESS;
}
else if (sati_status == SATI_COMPLETE)
sci_status = SCI_SUCCESS_IO_COMPLETE_BEFORE_START;
else if (sati_status == SATI_FAILURE_CHECK_RESPONSE_DATA)
sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
else
{
SCIF_LOG_ERROR((
sci_base_object_get_logger(fw_io),
SCIF_LOG_OBJECT_IO_REQUEST,
"Unexpected SAT translation failure 0x%x\n",
fw_io
));
}
return sci_status;
}
#if !defined(DISABLE_ATAPI)
/**
* @brief This method will construct the STP PACKET protocol specific IO
* request object.
*
* @pre The scif_sas_request_construct() method should be invoked before
* calling this method.
*
* @param[in,out] fw_io This parameter specifies the stp packet io request
* to be constructed.
*
* @return Indicate if the construction was successful.
* @return SCI_SUCCESS_IO_COMPLETE_BEFORE_START
* @return SCI_FAILURE_IO_RESPONSE_VALID
* @return SCI_FAILURE This return value indicates a change in the translator
* where a new return code has been given, but is not yet understood
* by this routine.
*/
SCI_STATUS scif_sas_stp_packet_io_request_construct(
SCIF_SAS_IO_REQUEST_T * fw_io
)
{
SATI_STATUS sati_status;
SCI_STATUS sci_status = SCI_FAILURE;
SCIF_SAS_REMOTE_DEVICE_T * fw_device = fw_io->parent.device;
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_io),
SCIF_LOG_OBJECT_IO_REQUEST,
"scif_sas_stp_packet_io_request_construct(0x%x) enter\n",
fw_io
));
sati_status = sati_atapi_translate_command(
&fw_io->parent.stp.sequence,
&fw_device->protocol_device.stp_device.sati_device,
fw_io,
fw_io
);
if (sati_status == SATI_SUCCESS)
{
// Allow the core to finish construction of the IO request.
sci_status = scic_io_request_construct_basic_sata(fw_io->parent.core_object);
fw_io->parent.protocol_complete_handler
= scif_sas_stp_core_cb_packet_io_request_complete_handler;
}
else if (sati_status == SATI_COMPLETE)
sci_status = SCI_SUCCESS_IO_COMPLETE_BEFORE_START;
else if (sati_status == SATI_FAILURE_CHECK_RESPONSE_DATA)
sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
else
{
SCIF_LOG_ERROR((
sci_base_object_get_logger(fw_io),
SCIF_LOG_OBJECT_IO_REQUEST,
"Unexpected SAT ATAPI translation failure 0x%x\n",
fw_io
));
}
return sci_status;
}
#endif
#if !defined(DISABLE_ATAPI)
/**
* @brief This method will get the number of bytes transferred in an packet IO.
*
* @param[in] fw_io This parameter specifies the stp packet io request whose
* actual transferred length is to be retrieved.
*
* @return Actual length of transferred data.
*/
U32 scif_sas_stp_packet_io_request_get_number_of_bytes_transferred(
SCIF_SAS_IO_REQUEST_T * fw_io
)
{
SCI_IO_REQUEST_HANDLE_T scic_io = scif_io_request_get_scic_handle(fw_io);
SCI_IO_STATUS io_status = scic_request_get_sci_status (scic_io);
U32 actual_data_length;
if (io_status == SCI_IO_FAILURE_RESPONSE_VALID)
actual_data_length = 0;
else if (io_status == SCI_IO_SUCCESS_IO_DONE_EARLY)
{
actual_data_length = sati_atapi_translate_number_of_bytes_transferred(
&fw_io->parent.stp.sequence, fw_io, fw_io);
if (actual_data_length == 0)
actual_data_length =
scic_io_request_get_number_of_bytes_transferred(scic_io);
}
else
actual_data_length =
scic_io_request_get_number_of_bytes_transferred(scic_io);
return actual_data_length;
}
#endif
//******************************************************************************
// P U B L I C M E T H O D S
//******************************************************************************
BOOL scic_cb_io_request_do_copy_rx_frames(
void * scic_user_io_request
)
{
SCIF_SAS_IO_REQUEST_T * fw_io = (SCIF_SAS_IO_REQUEST_T*) scic_user_io_request;
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_io),
SCIF_LOG_OBJECT_IO_REQUEST,
"scic_cb_io_request_do_copy_rx_frames(0x%x) enter\n",
fw_io
));
// If the translation was a PIO DATA IN (i.e. read) and the request
// was actually a READ payload operation, then copy the data, since
// there will be SGL space allocated for the transfer.
if (fw_io->parent.stp.sequence.protocol == SAT_PROTOCOL_PIO_DATA_IN)
{
if (
(fw_io->parent.stp.sequence.type == SATI_SEQUENCE_ATA_PASSTHROUGH_12)
|| (fw_io->parent.stp.sequence.type == SATI_SEQUENCE_ATA_PASSTHROUGH_16)
|| (
(fw_io->parent.stp.sequence.type >= SATI_SEQUENCE_TYPE_READ_MIN)
&& (fw_io->parent.stp.sequence.type <= SATI_SEQUENCE_TYPE_READ_MAX)
)
)
{
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_io),
SCIF_LOG_OBJECT_IO_REQUEST,
"scic_cb_io_request_do_copy_rx_frames(0x%x) TRUE\n",
fw_io
));
return TRUE;
}
}
// For all other requests we leave the data in the core buffers.
// This allows the translation to translate without having to have
// separate space allocated into which to copy the data.
return FALSE;
}
// ---------------------------------------------------------------------------
U8 scic_cb_request_get_sat_protocol(
void * scic_user_io_request
)
{
SCIF_SAS_IO_REQUEST_T * fw_io = (SCIF_SAS_IO_REQUEST_T*) scic_user_io_request;
return fw_io->parent.stp.sequence.protocol;
}
U8 *scic_cb_io_request_get_virtual_address_from_sgl(
void * scic_user_io_request,
U32 byte_offset
)
{
SCIF_SAS_REQUEST_T *fw_request =
(SCIF_SAS_REQUEST_T *) sci_object_get_association(scic_user_io_request);
return scif_cb_io_request_get_virtual_address_from_sgl(
sci_object_get_association(fw_request),
byte_offset
);
}
#ifdef ENABLE_OSSL_COPY_BUFFER
void scic_cb_io_request_copy_buffer(
void * scic_user_io_request,
U8 *source_addr,
U32 offset,
U32 length
)
{
SCIF_SAS_REQUEST_T *fw_request =
(SCIF_SAS_REQUEST_T *)sci_object_get_association(scic_user_io_request);
return scif_cb_io_request_copy_buffer(
sci_object_get_association(fw_request),
source_addr,
offset,
length
);
}
#endif
// ---------------------------------------------------------------------------
SCI_BASE_REQUEST_STATE_HANDLER_T stp_io_request_constructed_handlers =
{
scif_sas_stp_io_request_constructed_start_handler,
scif_sas_io_request_constructed_abort_handler,
scif_sas_stp_io_request_constructed_complete_handler,
scif_sas_io_request_default_destruct_handler
};