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isci: merge sata.[ch] into request.c 

Undo some needless separation.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2011-07-01 10:52:55 -07:00
parent 34a991587a
commit 16ba77091b
7 changed files with 120 additions and 378 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/isci/Makefile
View File

@ -1,5 +1,5 @@
obj-$(CONFIG_SCSI_ISCI) += isci.o
isci-objs := init.o phy.o request.o sata.o \
isci-objs := init.o phy.o request.o \
remote_device.o port.o \
host.o task.o probe_roms.o \
remote_node_context.o \

71
drivers/scsi/isci/request.c
View File

@ -56,7 +56,6 @@
#include "isci.h"
#include "task.h"
#include "request.h"
#include "sata.h"
#include "scu_completion_codes.h"
#include "scu_event_codes.h"
#include "sas.h"
@ -1092,16 +1091,6 @@ smp_request_await_tc_event(struct isci_request *ireq,
return SCI_SUCCESS;
}
void sci_stp_io_request_set_ncq_tag(struct isci_request *ireq,
u16 ncq_tag)
{
/**
* @note This could be made to return an error to the user if the user
* attempts to set the NCQ tag in the wrong state.
*/
ireq->tc->type.stp.ncq_tag = ncq_tag;
}
static struct scu_sgl_element *pio_sgl_next(struct isci_stp_request *stp_req)
{
struct scu_sgl_element *sgl;
@ -2410,6 +2399,29 @@ static void isci_task_save_for_upper_layer_completion(
}
}
static void isci_request_process_stp_response(struct sas_task *task,
void *response_buffer)
{
struct dev_to_host_fis *d2h_reg_fis = response_buffer;
struct task_status_struct *ts = &task->task_status;
struct ata_task_resp *resp = (void *)&ts->buf[0];
resp->frame_len = le16_to_cpu(*(__le16 *)(response_buffer + 6));
memcpy(&resp->ending_fis[0], response_buffer + 16, 24);
ts->buf_valid_size = sizeof(*resp);
/**
* If the device fault bit is set in the status register, then
* set the sense data and return.
*/
if (d2h_reg_fis->status & ATA_DF)
ts->stat = SAS_PROTO_RESPONSE;
else
ts->stat = SAM_STAT_GOOD;
ts->resp = SAS_TASK_COMPLETE;
}
static void isci_request_io_request_complete(struct isci_host *ihost,
struct isci_request *request,
enum sci_io_status completion_status)
@ -2985,34 +2997,29 @@ static enum sci_status isci_request_ssp_request_construct(
return status;
}
static enum sci_status isci_request_stp_request_construct(
struct isci_request *request)
static enum sci_status isci_request_stp_request_construct(struct isci_request *ireq)
{
struct sas_task *task = isci_request_access_task(request);
struct sas_task *task = isci_request_access_task(ireq);
struct host_to_dev_fis *fis = &ireq->stp.cmd;
struct ata_queued_cmd *qc = task->uldd_task;
enum sci_status status;
struct host_to_dev_fis *register_fis;
dev_dbg(&request->isci_host->pdev->dev,
"%s: request = %p\n",
dev_dbg(&ireq->isci_host->pdev->dev,
"%s: ireq = %p\n",
__func__,
request);
ireq);
/* Get the host_to_dev_fis from the core and copy
* the fis from the task into it.
*/
register_fis = isci_sata_task_to_fis_copy(task);
memcpy(fis, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
if (!task->ata_task.device_control_reg_update)
fis->flags |= 0x80;
fis->flags &= 0xF0;
status = sci_io_request_construct_basic_sata(request);
status = sci_io_request_construct_basic_sata(ireq);
/* Set the ncq tag in the fis, from the queue
* command in the task.
*/
if (isci_sata_is_task_ncq(task)) {
isci_sata_set_ncq_tag(
register_fis,
task
);
if (qc && (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
qc->tf.command == ATA_CMD_FPDMA_READ)) {
fis->sector_count = qc->tag << 3;
ireq->tc->type.stp.ncq_tag = qc->tag;
}
return status;

2
drivers/scsi/isci/request.h
View File

@ -435,8 +435,6 @@ enum sci_status
sci_task_request_construct_ssp(struct isci_request *ireq);
enum sci_status
sci_task_request_construct_sata(struct isci_request *ireq);
void
sci_stp_io_request_set_ncq_tag(struct isci_request *ireq, u16 ncq_tag);
void sci_smp_request_copy_response(struct isci_request *ireq);
static inline int isci_task_is_ncq_recovery(struct sas_task *task)

232
drivers/scsi/isci/sata.c
View File

@ -1,232 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <scsi/sas.h>
#include "isci.h"
#include "remote_device.h"
#include "task.h"
#include "request.h"
#include "sata.h"
/**
* isci_sata_task_to_fis_copy() - This function gets the host_to_dev_fis from
* the core and copies the fis from the task into it.
* @task: This parameter is a pointer to the task struct from libsas.
*
* pointer to the host_to_dev_fis from the core request object.
*/
struct host_to_dev_fis *isci_sata_task_to_fis_copy(struct sas_task *task)
{
struct isci_request *ireq = task->lldd_task;
struct host_to_dev_fis *fis = &ireq->stp.cmd;
memcpy(fis, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
if (!task->ata_task.device_control_reg_update)
fis->flags |= 0x80;
fis->flags &= 0xF0;
return fis;
}
/**
* isci_sata_is_task_ncq() - This function determines if the given stp task is
* a ncq request.
* @task: This parameter is a pointer to the task struct from libsas.
*
* true if the task is ncq
*/
bool isci_sata_is_task_ncq(struct sas_task *task)
{
struct ata_queued_cmd *qc = task->uldd_task;
bool ret = (qc &&
(qc->tf.command == ATA_CMD_FPDMA_WRITE ||
qc->tf.command == ATA_CMD_FPDMA_READ));
return ret;
}
/**
* isci_sata_set_ncq_tag() - This function sets the ncq tag field in the
* host_to_dev_fis equal to the tag in the queue command in the task.
* @task: This parameter is a pointer to the task struct from libsas.
* @register_fis: This parameter is a pointer to the host_to_dev_fis from the
* core request object.
*
*/
void isci_sata_set_ncq_tag(
struct host_to_dev_fis *register_fis,
struct sas_task *task)
{
struct ata_queued_cmd *qc = task->uldd_task;
struct isci_request *request = task->lldd_task;
register_fis->sector_count = qc->tag << 3;
sci_stp_io_request_set_ncq_tag(request, qc->tag);
}
/**
* isci_request_process_stp_response() - This function sets the status and
* response, in the task struct, from the request object for the upper layer
* driver.
* @sas_task: This parameter is the task struct from the upper layer driver.
* @response_buffer: This parameter points to the response of the completed
* request.
*
* none.
*/
void isci_request_process_stp_response(struct sas_task *task,
void *response_buffer)
{
struct dev_to_host_fis *d2h_reg_fis = response_buffer;
struct task_status_struct *ts = &task->task_status;
struct ata_task_resp *resp = (void *)&ts->buf[0];
resp->frame_len = le16_to_cpu(*(__le16 *)(response_buffer + 6));
memcpy(&resp->ending_fis[0], response_buffer + 16, 24);
ts->buf_valid_size = sizeof(*resp);
/**
* If the device fault bit is set in the status register, then
* set the sense data and return.
*/
if (d2h_reg_fis->status & ATA_DF)
ts->stat = SAS_PROTO_RESPONSE;
else
ts->stat = SAM_STAT_GOOD;
ts->resp = SAS_TASK_COMPLETE;
}
enum sci_status isci_sata_management_task_request_build(struct isci_request *ireq)
{
struct isci_tmf *isci_tmf;
enum sci_status status;
if (tmf_task != ireq->ttype)
return SCI_FAILURE;
isci_tmf = isci_request_access_tmf(ireq);
switch (isci_tmf->tmf_code) {
case isci_tmf_sata_srst_high:
case isci_tmf_sata_srst_low: {
struct host_to_dev_fis *fis = &ireq->stp.cmd;
memset(fis, 0, sizeof(*fis));
fis->fis_type = 0x27;
fis->flags &= ~0x80;
fis->flags &= 0xF0;
if (isci_tmf->tmf_code == isci_tmf_sata_srst_high)
fis->control |= ATA_SRST;
else
fis->control &= ~ATA_SRST;
break;
}
/* other management commnd go here... */
default:
return SCI_FAILURE;
}
/* core builds the protocol specific request
* based on the h2d fis.
*/
status = sci_task_request_construct_sata(ireq);
return status;
}
/**
* isci_task_send_lu_reset_sata() - This function is called by of the SAS
* Domain Template functions. This is one of the Task Management functoins
* called by libsas, to reset the given SAS lun. Note the assumption that
* while this call is executing, no I/O will be sent by the host to the
* device.
* @lun: This parameter specifies the lun to be reset.
*
* status, zero indicates success.
*/
int isci_task_send_lu_reset_sata(
struct isci_host *isci_host,
struct isci_remote_device *isci_device,
u8 *lun)
{
struct isci_tmf tmf;
int ret = TMF_RESP_FUNC_FAILED;
/* Send the soft reset to the target */
#define ISCI_SRST_TIMEOUT_MS 25000 /* 25 second timeout. */
isci_task_build_tmf(&tmf, isci_tmf_sata_srst_high, NULL, NULL);
ret = isci_task_execute_tmf(isci_host, isci_device, &tmf,
ISCI_SRST_TIMEOUT_MS);
if (ret != TMF_RESP_FUNC_COMPLETE) {
dev_warn(&isci_host->pdev->dev,
"%s: Assert SRST failed (%p) = %x",
__func__,
isci_device,
ret);
/* Return the failure so that the LUN reset is escalated
* to a target reset.
*/
}
return ret;
}

79
drivers/scsi/isci/sata.h
View File

@ -1,79 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
struct host_to_dev_fis *isci_sata_task_to_fis_copy(
struct sas_task *task);
bool isci_sata_is_task_ncq(
struct sas_task *task);
void isci_sata_set_ncq_tag(
struct host_to_dev_fis *register_fis,
struct sas_task *task);
void isci_request_process_stp_response(
struct sas_task *task,
void *response_buffer);
u8 isci_sata_get_sat_protocol(
struct isci_request *isci_request);
enum sci_status isci_sata_management_task_request_build(
struct isci_request *isci_request);
int isci_task_send_lu_reset_sata(
struct isci_host *isci_host,
struct isci_remote_device *isci_device,
u8 *lun);

100
drivers/scsi/isci/task.c
View File

@ -61,7 +61,6 @@
#include "remote_node_context.h"
#include "isci.h"
#include "request.h"
#include "sata.h"
#include "task.h"
#include "host.h"
@ -238,6 +237,46 @@ int isci_task_execute_task(struct sas_task *task, int num, gfp_t gfp_flags)
return 0;
}
static enum sci_status isci_sata_management_task_request_build(struct isci_request *ireq)
{
struct isci_tmf *isci_tmf;
enum sci_status status;
if (tmf_task != ireq->ttype)
return SCI_FAILURE;
isci_tmf = isci_request_access_tmf(ireq);
switch (isci_tmf->tmf_code) {
case isci_tmf_sata_srst_high:
case isci_tmf_sata_srst_low: {
struct host_to_dev_fis *fis = &ireq->stp.cmd;
memset(fis, 0, sizeof(*fis));
fis->fis_type = 0x27;
fis->flags &= ~0x80;
fis->flags &= 0xF0;
if (isci_tmf->tmf_code == isci_tmf_sata_srst_high)
fis->control |= ATA_SRST;
else
fis->control &= ~ATA_SRST;
break;
}
/* other management commnd go here... */
default:
return SCI_FAILURE;
}
/* core builds the protocol specific request
* based on the h2d fis.
*/
status = sci_task_request_construct_sata(ireq);
return status;
}
static struct isci_request *isci_task_request_build(struct isci_host *ihost,
struct isci_remote_device *idev,
u16 tag, struct isci_tmf *isci_tmf)
@ -287,9 +326,9 @@ static struct isci_request *isci_task_request_build(struct isci_host *ihost,
return ireq;
}
int isci_task_execute_tmf(struct isci_host *ihost,
struct isci_remote_device *idev,
struct isci_tmf *tmf, unsigned long timeout_ms)
static int isci_task_execute_tmf(struct isci_host *ihost,
struct isci_remote_device *idev,
struct isci_tmf *tmf, unsigned long timeout_ms)
{
DECLARE_COMPLETION_ONSTACK(completion);
enum sci_task_status status = SCI_TASK_FAILURE;
@ -401,13 +440,12 @@ int isci_task_execute_tmf(struct isci_host *ihost,
return ret;
}
void isci_task_build_tmf(
struct isci_tmf *tmf,
enum isci_tmf_function_codes code,
void (*tmf_sent_cb)(enum isci_tmf_cb_state,
struct isci_tmf *,
void *),
void *cb_data)
static void isci_task_build_tmf(struct isci_tmf *tmf,
enum isci_tmf_function_codes code,
void (*tmf_sent_cb)(enum isci_tmf_cb_state,
struct isci_tmf *,
void *),
void *cb_data)
{
memset(tmf, 0, sizeof(*tmf));
@ -416,16 +454,14 @@ void isci_task_build_tmf(
tmf->cb_data = cb_data;
}
static void isci_task_build_abort_task_tmf(
struct isci_tmf *tmf,
enum isci_tmf_function_codes code,
void (*tmf_sent_cb)(enum isci_tmf_cb_state,
struct isci_tmf *,
void *),
struct isci_request *old_request)
static void isci_task_build_abort_task_tmf(struct isci_tmf *tmf,
enum isci_tmf_function_codes code,
void (*tmf_sent_cb)(enum isci_tmf_cb_state,
struct isci_tmf *,
void *),
struct isci_request *old_request)
{
isci_task_build_tmf(tmf, code, tmf_sent_cb,
(void *)old_request);
isci_task_build_tmf(tmf, code, tmf_sent_cb, old_request);
tmf->io_tag = old_request->io_tag;
}
@ -804,6 +840,30 @@ static int isci_task_send_lu_reset_sas(
return ret;
}
static int isci_task_send_lu_reset_sata(struct isci_host *ihost,
struct isci_remote_device *idev, u8 *lun)
{
int ret = TMF_RESP_FUNC_FAILED;
struct isci_tmf tmf;
/* Send the soft reset to the target */
#define ISCI_SRST_TIMEOUT_MS 25000 /* 25 second timeout. */
isci_task_build_tmf(&tmf, isci_tmf_sata_srst_high, NULL, NULL);
ret = isci_task_execute_tmf(ihost, idev, &tmf, ISCI_SRST_TIMEOUT_MS);
if (ret != TMF_RESP_FUNC_COMPLETE) {
dev_warn(&ihost->pdev->dev,
"%s: Assert SRST failed (%p) = %x",
__func__, idev, ret);
/* Return the failure so that the LUN reset is escalated
* to a target reset.
*/
}
return ret;
}
/**
* isci_task_lu_reset() - This function is one of the SAS Domain Template
* functions. This is one of the Task Management functoins called by libsas,

12
drivers/scsi/isci/task.h
View File

@ -211,18 +211,6 @@ int isci_queuecommand(
int isci_bus_reset_handler(struct scsi_cmnd *cmd);
void isci_task_build_tmf(
struct isci_tmf *tmf,
enum isci_tmf_function_codes code,
void (*tmf_sent_cb)(enum isci_tmf_cb_state,
struct isci_tmf *,
void *),
void *cb_data);
int isci_task_execute_tmf(struct isci_host *isci_host,
struct isci_remote_device *idev,
struct isci_tmf *tmf, unsigned long timeout_ms);
/**
* enum isci_completion_selection - This enum defines the possible actions to
* take with respect to a given request's notification back to libsas.