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Commit f1f52e75 authored by Dan Williams's avatar Dan Williams
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isci: uplevel request infrastructure 

* Consolidate tiny header files
* Move files out of core/ (drop core/scic_sds_ prefix)
* Merge core/scic_sds_request.[ch] into request.[ch]
* Cleanup request.c namespace (clean forward declarations and global
  namespace pollution)
Reported-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 3bff9d54
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drivers/scsi/isci/Makefile
View file @ f1f52e75
......@@ -7,11 +7,9 @@ isci-objs := init.o phy.o request.o sata.o \
remote_node_context.o \
remote_node_table.o \
unsolicited_frame_control.o \
core/scic_sds_request.o \
core/scic_sds_stp_request.o \
stp_request.o \
ssp_request.o \
smp_request.o \
core/scic_sds_port.o \
core/scic_sds_port_configuration_agent.o \
core/scic_sds_phy.o \
core/scic_sds_ssp_request.o \
core/scic_sds_smp_request.o \
core/sci_util.o
drivers/scsi/isci/core/sci_util.c deleted 100644 → 0
View file @ 3bff9d54
/*
* 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 <linux/kernel.h>
#include "sci_util.h"
#include "request.h"
void *scic_request_get_virt_addr(struct scic_sds_request *sci_req, dma_addr_t phys_addr)
{
struct isci_request *ireq = sci_req_to_ireq(sci_req);
dma_addr_t offset;
BUG_ON(phys_addr < ireq->request_daddr);
offset = phys_addr - ireq->request_daddr;
BUG_ON(offset >= sizeof(*ireq));
return (char *)ireq + offset;
}
dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
void *virt_addr)
{
struct isci_request *isci_request = sci_req_to_ireq(sds_request);
char *requested_addr = (char *)virt_addr;
char *base_addr = (char *)isci_request;
BUG_ON(requested_addr < base_addr);
BUG_ON((requested_addr - base_addr) >= sizeof(*isci_request));
return isci_request->request_daddr + (requested_addr - base_addr);
}
drivers/scsi/isci/core/sci_util.h deleted 100644 → 0
View file @ 3bff9d54
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCI_UTIL_H_
#define _SCI_UTIL_H_
#include "scic_sds_request.h"
#define SCIC_BUILD_DWORD(char_buffer) \
(\
((char_buffer)[0] << 24) \
| ((char_buffer)[1] << 16) \
| ((char_buffer)[2] << 8) \
| ((char_buffer)[3]) \
)
#define sci_cb_make_physical_address(physical_addr, addr_upper, addr_lower) \
((physical_addr) = (addr_lower) | ((u64)addr_upper) << 32)
/**
* sci_swab32_cpy - convert between scsi and scu-hardware byte format
* @dest: receive the 4-byte endian swapped version of src
* @src: word aligned source buffer
*
* scu hardware handles SSP/SMP control, response, and unidentified
* frames in "big endian dword" order. Regardless of host endian this
* is always a swab32()-per-dword conversion of the standard definition,
* i.e. single byte fields swapped and multi-byte fields in little-
* endian
*/
static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
{
u32 *dest = _dest, *src = _src;
while (--word_cnt >= 0)
dest[word_cnt] = swab32(src[word_cnt]);
}
void *scic_request_get_virt_addr(struct scic_sds_request *sds_request,
dma_addr_t phys_addr);
dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
void *virt_addr);
#endif /* _SCI_UTIL_H_ */
drivers/scsi/isci/core/scic_io_request.h deleted 100644 → 0
View file @ 3bff9d54
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCIC_IO_REQUEST_H_
#define _SCIC_IO_REQUEST_H_
#include <linux/kernel.h>
struct scic_sds_request;
struct scic_sds_remote_device;
struct scic_sds_controller;
/**
* This enumeration specifies the transport protocol utilized for the request.
*
*
*/
typedef enum {
/**
* This enumeration constant indicates that no protocol has yet been
* set.
*/
SCIC_NO_PROTOCOL,
/**
* This enumeration constant indicates that the protocol utilized
* is the Serial Management Protocol.
*/
SCIC_SMP_PROTOCOL,
/**
* This enumeration constant indicates that the protocol utilized
* is the Serial SCSI Protocol.
*/
SCIC_SSP_PROTOCOL,
/**
* This enumeration constant indicates that the protocol utilized
* is the Serial-ATA Tunneling Protocol.
*/
SCIC_STP_PROTOCOL
} SCIC_TRANSPORT_PROTOCOL;
enum sci_status scic_io_request_construct(
struct scic_sds_controller *scic_controller,
struct scic_sds_remote_device *scic_remote_device,
u16 io_tag, struct scic_sds_request *sci_req);
/**
* scic_io_request_construct_basic_ssp() - This method is called by the SCI
* user to build an SSP IO request.
* @scic_io_request: This parameter specifies the handle to the io request
* object to be built.
*
* - The user must have previously called scic_io_request_construct() on the
* supplied IO request. Indicate if the controller successfully built the IO
* request. SCI_SUCCESS This value is returned if the IO request was
* successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
* if the remote_device does not support the SSP protocol.
* 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.
*/
enum sci_status scic_io_request_construct_basic_ssp(
struct scic_sds_request *scic_io_request);
/**
* scic_io_request_construct_basic_sata() - This method is called by the SCI
* Core user to build an STP IO request.
* @scic_io_request: This parameter specifies the handle to the io request
* object to be built.
*
* - The user must have previously called scic_io_request_construct() on the
* supplied IO request. Indicate if the controller successfully built the IO
* request. SCI_SUCCESS This value is returned if the IO request was
* successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
* if the remote_device does not support the STP protocol.
* 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.
*/
enum sci_status scic_io_request_construct_basic_sata(
struct scic_sds_request *scic_io_request);
/**
* scic_io_request_construct_smp() - This method is called by the SCI user to
* build an SMP IO request.
* @scic_io_request: This parameter specifies the handle to the io request
* object to be built.
*
* - The user must have previously called scic_io_request_construct() on the
* supplied IO request. Indicate if the controller successfully built the IO
* request. SCI_SUCCESS This value is returned if the IO request was
* successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
* if the remote_device does not support the SMP protocol.
* 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.
*/
enum sci_status scic_io_request_construct_smp(
struct scic_sds_request *scic_io_request);
/**
* scic_request_get_controller_status() - This method returns the controller
* specific IO/Task request status. These status values are unique to the
* specific controller being managed by the SCIC.
* @io_request: the handle to the IO or task management request object for
* which to retrieve the status.
*
* This method returns a value indicating the controller specific request
* status.
*/
u32 scic_request_get_controller_status(
struct scic_sds_request *io_request);
/**
* scic_io_request_get_io_tag() - This method will return the IO tag utilized
* by the IO request.
* @scic_io_request: This parameter specifies the handle to the io request
* object for which to return the IO tag.
*
* An unsigned integer representing the IO tag being utilized.
* SCI_CONTROLLER_INVALID_IO_TAG This value is returned if the IO does not
* currently have an IO tag allocated to it. All return other values indicate a
* legitimate tag.
*/
u16 scic_io_request_get_io_tag(
struct scic_sds_request *scic_io_request);
/**
* scic_stp_io_request_set_ncq_tag() - This method will assign an NCQ tag to
* the io request object. The caller of this function must make sure that
* only valid NCQ tags are assigned to the io request object.
* @scic_io_request: This parameter specifies the handle to the io request
* object to which to assign the ncq tag.
* @ncq_tag: This parameter specifies the NCQ tag to be utilized for the
* supplied core IO request. It is up to the user to make sure that this is
* a valid NCQ tag.
*
* none This function is only valid for SATA NCQ requests.
*/
void scic_stp_io_request_set_ncq_tag(
struct scic_sds_request *scic_io_request,
u16 ncq_tag);
/**
* scic_io_request_get_number_of_bytes_transferred() - This method will return
* the number of bytes transferred from the SCU
* @scic_io_request: This parameter specifies the handle to the io request
* whose data length was not eqaul to the data length specified in the
* request. When the driver gets an early io completion status from the
* hardware, this routine should be called to get the actual number of bytes
* transferred
*
* The return is the number of bytes transferred when the data legth is not
* equal to the specified length in the io request
*/
u32 scic_io_request_get_number_of_bytes_transferred(
struct scic_sds_request *scic_io_request);
#endif /* _SCIC_IO_REQUEST_H_ */
drivers/scsi/isci/core/scic_sds_phy.c
View file @ f1f52e75
......@@ -61,7 +61,6 @@
#include "scic_sds_phy.h"
#include "scic_sds_port.h"
#include "remote_node_context.h"
#include "sci_util.h"
#include "scu_event_codes.h"
#include "timers.h"
......
drivers/scsi/isci/core/scic_sds_port.c
View file @ f1f52e75
......@@ -60,9 +60,9 @@
#include "scic_sds_port.h"
#include "remote_device.h"
#include "remote_node_context.h"
#include "scic_sds_request.h"
#include "registers.h"
#include "timers.h"
#include "scu_task_context.h"
#define SCIC_SDS_PORT_MIN_TIMER_COUNT (SCI_MAX_PORTS)
#define SCIC_SDS_PORT_MAX_TIMER_COUNT (SCI_MAX_PORTS)
......
drivers/scsi/isci/core/scic_sds_request.c deleted 100644 → 0
View file @ 3bff9d54
/*
* 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 "scic_io_request.h"
#include "registers.h"
#include "scic_sds_port.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "scic_sds_smp_request.h"
#include "scic_sds_stp_request.h"
#include "unsolicited_frame_control.h"
#include "sci_util.h"
#include "scu_completion_codes.h"
#include "scu_task_context.h"
#include "request.h"
#include "task.h"
/*
* ****************************************************************************
* * SCIC SDS IO REQUEST CONSTANTS
* **************************************************************************** */
/**
*
*
* We have no timer requirements for IO requests right now
*/
#define SCIC_SDS_IO_REQUEST_MINIMUM_TIMER_COUNT (0)
#define SCIC_SDS_IO_REQUEST_MAXIMUM_TIMER_COUNT (0)
/**
* This method returns the sgl element pair for the specificed sgl_pair index.
* @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.
*
* 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 *sci_req,
u32 sgl_pair_index
) {
struct scu_task_context *task_context;
task_context = (struct scu_task_context *)sci_req->task_context_buffer;
if (sgl_pair_index == 0) {
return &task_context->sgl_pair_ab;
} else if (sgl_pair_index == 1) {
return &task_context->sgl_pair_cd;
}
return &sci_req->sg_table[sgl_pair_index - 2];
}
/**
* This function will build the SGL list for an IO request.
* @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 = 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;
dma_addr_t dma_addr;
u32 sg_idx = 0;
struct scu_sgl_element_pair *scu_sg = NULL;
struct scu_sgl_element_pair *prev_sg = NULL;
if (task->num_scatter > 0) {
sg = task->scatter;
while (sg) {
scu_sg = scic_sds_request_get_sgl_element_pair(
sds_request,
sg_idx);
SCU_SGL_COPY(scu_sg->A, sg);
sg = sg_next(sg);
if (sg) {
SCU_SGL_COPY(scu_sg->B, sg);
sg = sg_next(sg);
} else
SCU_SGL_ZERO(scu_sg->B);
if (prev_sg) {
dma_addr =
scic_io_request_get_dma_addr(
sds_request,
scu_sg);
prev_sg->next_pair_upper =
upper_32_bits(dma_addr);
prev_sg->next_pair_lower =
lower_32_bits(dma_addr);
}
prev_sg = scu_sg;
sg_idx++;
}
} else { /* handle when no sg */
scu_sg = scic_sds_request_get_sgl_element_pair(sds_request,
sg_idx);
dma_addr = dma_map_single(&isci_host->pdev->dev,
task->scatter,
task->total_xfer_len,
task->data_dir);
isci_request->zero_scatter_daddr = dma_addr;
scu_sg->A.length = task->total_xfer_len;
scu_sg->A.address_upper = upper_32_bits(dma_addr);
scu_sg->A.address_lower = lower_32_bits(dma_addr);
}
if (scu_sg) {
scu_sg->next_pair_upper = 0;
scu_sg->next_pair_lower = 0;
}
}
static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req)
{
if (sci_req->was_tag_assigned_by_user == false)
sci_req->task_context_buffer = &sci_req->tc;
}
static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req)
{
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));
}
static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req)
{
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);
task_iu = &sci_req->ssp.tmf;
memset(task_iu, 0, sizeof(struct ssp_task_iu));
memcpy(task_iu->LUN, task->ssp_task.LUN, 8);
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.
* @sci_req:
* @task_context:
*
*/
static void scu_ssp_reqeust_construct_task_context(
struct scic_sds_request *sds_request,
struct scu_task_context *task_context)
{
dma_addr_t dma_addr;
struct scic_sds_controller *controller;
struct scic_sds_remote_device *target_device;
struct scic_sds_port *target_port;
controller = scic_sds_request_get_controller(sds_request);
target_device = scic_sds_request_get_device(sds_request);
target_port = scic_sds_request_get_port(sds_request);
/* Fill in the TC with the its required data */
task_context->abort = 0;
task_context->priority = 0;
task_context->initiator_request = 1;
task_context->connection_rate = target_device->connection_rate;
task_context->protocol_engine_index =
scic_sds_controller_get_protocol_engine_group(controller);
task_context->logical_port_index =
scic_sds_port_get_index(target_port);
task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
task_context->valid = SCU_TASK_CONTEXT_VALID;
task_context->context_type = SCU_TASK_CONTEXT_TYPE;
task_context->remote_node_index =
scic_sds_remote_device_get_index(sds_request->target_device);
task_context->command_code = 0;
task_context->link_layer_control = 0;
task_context->do_not_dma_ssp_good_response = 1;
task_context->strict_ordering = 0;
task_context->control_frame = 0;
task_context->timeout_enable = 0;
task_context->block_guard_enable = 0;
task_context->address_modifier = 0;
/* task_context->type.ssp.tag = sci_req->io_tag; */
task_context->task_phase = 0x01;
if (sds_request->was_tag_assigned_by_user) {
/*
* Build the task context now since we have already read
* the data
*/
sds_request->post_context =
(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
(scic_sds_controller_get_protocol_engine_group(
controller) <<
SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
(scic_sds_port_get_index(target_port) <<
SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
scic_sds_io_tag_get_index(sds_request->io_tag));
} else {
/*
* Build the task context now since we have already read
* the data
*
* I/O tag index is not assigned because we have to wait
* until we get a TCi
*/
sds_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));
}
/*
* Copy the physical address for the command buffer to the
* SCU Task Context
*/
dma_addr = scic_io_request_get_dma_addr(sds_request,
&sds_request->ssp.cmd);
task_context->command_iu_upper = upper_32_bits(dma_addr);
task_context->command_iu_lower = lower_32_bits(dma_addr);
/*
* Copy the physical address for the response buffer to the
* SCU Task Context
*/
dma_addr = scic_io_request_get_dma_addr(sds_request,
&sds_request->ssp.rsp);
task_context->response_iu_upper = upper_32_bits(dma_addr);
task_context->response_iu_lower = lower_32_bits(dma_addr);
}
/**
* This method is will fill in the SCU Task Context for a SSP IO request.
* @sci_req:
*
*/
static void scu_ssp_io_request_construct_task_context(
struct scic_sds_request *sci_req,
enum dma_data_direction dir,
u32 len)
{
struct scu_task_context *task_context;
task_context = scic_sds_request_get_task_context(sci_req);
scu_ssp_reqeust_construct_task_context(sci_req, task_context);
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:
case DMA_NONE:
default:
task_context->task_type = SCU_TASK_TYPE_IOREAD;
break;
case DMA_TO_DEVICE:
task_context->task_type = SCU_TASK_TYPE_IOWRITE;
break;
}
task_context->transfer_length_bytes = len;
if (task_context->transfer_length_bytes > 0)
scic_sds_request_build_sgl(sci_req);
}
static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req)
{
if (sci_req->was_tag_assigned_by_user == false)
sci_req->task_context_buffer = &sci_req->tc;
}
/**
* This method will fill in the SCU Task Context for a SSP Task request. The
* following important settings are utilized: -# priority ==
* SCU_TASK_PRIORITY_HIGH. This ensures that the task request is issued
* ahead of other task destined for the same Remote Node. -# task_type ==
* SCU_TASK_TYPE_IOREAD. 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 task frame.
* @sci_req: This parameter specifies the task request object being
* constructed.
*
*/
static void scu_ssp_task_request_construct_task_context(
struct scic_sds_request *sci_req)
{
struct scu_task_context *task_context;
task_context = scic_sds_request_get_task_context(sci_req);
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 = 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.
* @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
*/
/**
* This method constructs the SATA request object.
* @sci_req:
* @sat_protocol:
* @transfer_length:
* @data_direction:
* @copy_rx_frame:
*
* enum sci_status
*/
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 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;
}
}
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;
}
/* non data */
if (task->data_dir == DMA_NONE)
return scic_sds_stp_non_data_request_construct(sci_req);
/* NCQ */
if (task->ata_task.use_ncq)
return scic_sds_stp_ncq_request_construct(sci_req, len, dir);
/* 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 *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,
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->state_machine,
SCI_BASE_REQUEST_STATE_CONSTRUCTED);
return SCI_SUCCESS;
}
enum sci_status scic_task_request_construct_ssp(
struct scic_sds_request *sci_req)
{
/* Construct the SSP Task SCU Task Context */
scu_ssp_task_request_construct_task_context(sci_req);
/* Fill in the SSP Task IU */
scic_sds_task_request_build_ssp_task_iu(sci_req);
sci_base_state_machine_change_state(&sci_req->state_machine,
SCI_BASE_REQUEST_STATE_CONSTRUCTED);
return SCI_SUCCESS;
}
enum sci_status scic_io_request_construct_basic_sata(
struct scic_sds_request *sci_req)
{
enum sci_status status;
struct scic_sds_stp_request *stp_req;
bool copy = false;
struct isci_request *isci_request = sci_req_to_ireq(sci_req);
struct sas_task *task = isci_request_access_task(isci_request);
stp_req = &sci_req->stp.req;
sci_req->protocol = SCIC_STP_PROTOCOL;
copy = (task->data_dir == DMA_NONE) ? false : true;
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->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 status = SCI_SUCCESS;
struct isci_request *ireq = sci_req_to_ireq(sci_req);
/* 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) {
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);
return SCI_FAILURE;
}
}
if (status == SCI_SUCCESS)
sci_base_state_machine_change_state(
&sci_req->state_machine,
SCI_BASE_REQUEST_STATE_CONSTRUCTED);
return status;
}
u16 scic_io_request_get_io_tag(
struct scic_sds_request *sci_req)
{
return sci_req->io_tag;
}
u32 scic_request_get_controller_status(
struct scic_sds_request *sci_req)
{
return sci_req->scu_status;
}
#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 (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 = 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;
}
/*
* ****************************************************************************
* * SCIC SDS Interface Implementation
* **************************************************************************** */
enum sci_status
scic_sds_request_start(struct scic_sds_request *request)
{
if (request->device_sequence !=
scic_sds_remote_device_get_sequence(request->target_device))
return SCI_FAILURE;
if (request->state_handlers->start_handler)
return request->state_handlers->start_handler(request);
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(&request->state_machine));
return SCI_FAILURE_INVALID_STATE;
}
enum sci_status
scic_sds_io_request_terminate(struct scic_sds_request *request)
{
if (request->state_handlers->abort_handler)
return request->state_handlers->abort_handler(request);
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(&request->state_machine));
return SCI_FAILURE_INVALID_STATE;
}
enum sci_status
scic_sds_io_request_complete(struct scic_sds_request *request)
{
if (request->state_handlers->complete_handler)
return request->state_handlers->complete_handler(request);
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(&request->state_machine));
return SCI_FAILURE_INVALID_STATE;
}
enum sci_status scic_sds_io_request_event_handler(
struct scic_sds_request *request,
u32 event_code)
{
if (request->state_handlers->event_handler)
return request->state_handlers->event_handler(request, event_code);
dev_warn(scic_to_dev(request->owning_controller),
"%s: SCIC IO Request given event code notification %x while "
"in wrong state %d\n",
__func__,
event_code,
sci_base_state_machine_get_state(&request->state_machine));
return SCI_FAILURE_INVALID_STATE;
}
enum sci_status
scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code)
{
if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED &&
request->has_started_substate_machine == false)
return scic_sds_request_started_state_tc_completion_handler(request, completion_code);
else if (request->state_handlers->tc_completion_handler)
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(&request->state_machine));
return 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_io_request_frame_handler(
struct scic_sds_request *request,
u32 frame_index)
{
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__,
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;
}
/*
* 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.
*/
void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req)
{
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);
ssp_response = &sci_req->ssp.rsp;
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);
}
/*
* *****************************************************************************
* * CONSTRUCTED STATE HANDLERS
* ***************************************************************************** */
/*
* 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
* then will, if necessary, copy the constructed TC data into the actual TC
* buffer. If everything is successful the post context field is updated with
* the TCi so the controller can post the request to the hardware. enum sci_status
* SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES
*/
static enum sci_status scic_sds_request_constructed_state_start_handler(
struct scic_sds_request *request)
{
struct scu_task_context *task_context;
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 (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) {
task_context = request->task_context_buffer;
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 = 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 = request->ncq_tag; */
break;
case SCU_TASK_CONTEXT_PROTOCOL_NONE:
/* / @todo When do we set no protocol type? */
break;
default:
/* This should never happen since we build the IO requests */
break;
}
/*
* Check to see if we need to copy the task context buffer
* or have been building into the task context buffer */
if (request->was_tag_assigned_by_user == false) {
scic_sds_controller_copy_task_context(
request->owning_controller, request);
}
/* Add to the post_context the io tag value */
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(&request->state_machine,
SCI_BASE_REQUEST_STATE_STARTED);
return SCI_SUCCESS;
}
return SCI_FAILURE_INSUFFICIENT_RESOURCES;
}
/*
* 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 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(request,
SCU_TASK_DONE_TASK_ABORT,
SCI_FAILURE_IO_TERMINATED);
sci_base_state_machine_change_state(&request->state_machine,
SCI_BASE_REQUEST_STATE_COMPLETED);
return SCI_SUCCESS;
}
/*
* *****************************************************************************
* * STARTED STATE HANDLERS
* ***************************************************************************** */
/*
* This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
* object receives a scic_sds_request_terminate() request. Since the request
* has been posted to the hardware the io request state is changed to the
* aborting state. enum sci_status SCI_SUCCESS
*/
enum sci_status scic_sds_request_started_state_abort_handler(
struct scic_sds_request *request)
{
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.
* @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 *sci_req,
u32 completion_code)
{
u8 datapres;
struct ssp_response_iu *resp_iu;
/*
* 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(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 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 (resp->status == 0) {
scic_sds_request_set_status(
sci_req,
SCU_TASK_DONE_GOOD,
SCI_SUCCESS_IO_DONE_EARLY);
} else {
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_CHECK_RESPONSE):
{
ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
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?
*/
resp_iu = &sci_req->ssp.rsp;
datapres = resp_iu->datapres;
if ((datapres == 0x01) || (datapres == 0x02)) {
scic_sds_request_set_status(
sci_req,
SCU_TASK_DONE_CHECK_RESPONSE,
SCI_FAILURE_IO_RESPONSE_VALID);
} else
scic_sds_request_set_status(
sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
break;
/* only stp device gets suspended. */
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP):
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 (sci_req->protocol == SCIC_STP_PROTOCOL) {
scic_sds_request_set_status(
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(
sci_req,
SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
SCU_COMPLETION_TL_STATUS_SHIFT,
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
}
break;
/* both stp/ssp device gets suspended */
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
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(
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. */
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA):
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):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV):
case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND):
default:
scic_sds_request_set_status(
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
*/
/* In all cases we will treat this as the completion of the IO req. */
sci_base_state_machine_change_state(
&sci_req->state_machine,
SCI_BASE_REQUEST_STATE_COMPLETED);
return SCI_SUCCESS;
}
/*
* 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
* the response data is copied to the io request response buffer for processing
* 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 *sci_req,
u32 frame_index)
{
enum sci_status status;
u32 *frame_header;
struct ssp_frame_hdr ssp_hdr;
ssize_t word_cnt;
status = scic_sds_unsolicited_frame_control_get_header(
&(scic_sds_request_get_controller(sci_req)->uf_control),
frame_index,
(void **)&frame_header);
word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
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(sci_req)->uf_control),
frame_index,
(void **)&resp_iu);
sci_swab32_cpy(&sci_req->ssp.rsp,
resp_iu, word_cnt);
resp_iu = &sci_req->ssp.rsp;
if ((resp_iu->datapres == 0x01) ||
(resp_iu->datapres == 0x02)) {
scic_sds_request_set_status(
sci_req,
SCU_TASK_DONE_CHECK_RESPONSE,
SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
} else
scic_sds_request_set_status(
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(sci_req->owning_controller),
"%s: SCIC IO Request 0x%p received unexpected "
"frame %d type 0x%02x\n",
__func__,
sci_req,
frame_index,
ssp_hdr.frame_type);
}
/*
* In any case we are done with this frame buffer return it to the
* controller
*/
scic_sds_controller_release_frame(
sci_req->owning_controller, frame_index);
return SCI_SUCCESS;
}
/*
* *****************************************************************************
* * COMPLETED STATE HANDLERS
* ***************************************************************************** */
/*
* 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
* request to its final state. Consider stopping the state machine instead of
* transitioning to the final state? enum sci_status SCI_SUCCESS
*/
static enum sci_status scic_sds_request_completed_state_complete_handler(
struct scic_sds_request *request)
{
if (request->was_tag_assigned_by_user != true) {
scic_controller_free_io_tag(
request->owning_controller, request->io_tag);
}
if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) {
scic_sds_controller_release_frame(
request->owning_controller, request->saved_rx_frame_index);
}
sci_base_state_machine_change_state(&request->state_machine,
SCI_BASE_REQUEST_STATE_FINAL);
return SCI_SUCCESS;
}
/*
* *****************************************************************************
* * ABORTING STATE HANDLERS
* ***************************************************************************** */
/*
* This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
* object receives a scic_sds_request_terminate() request. This method is the
* io request aborting state abort handlers. On receipt of a multiple
* terminate requests the io request will transition to the completed state.
* This should not happen in normal operation. enum sci_status SCI_SUCCESS
*/
static enum sci_status scic_sds_request_aborting_state_abort_handler(
struct scic_sds_request *request)
{
sci_base_state_machine_change_state(&request->state_machine,
SCI_BASE_REQUEST_STATE_COMPLETED);
return SCI_SUCCESS;
}
/*
* 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
* notification. When the abort task complete is received the io request
* 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 *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(
sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED
);
sci_base_state_machine_change_state(&sci_req->state_machine,
SCI_BASE_REQUEST_STATE_COMPLETED);
break;
default:
/*
* Unless we get some strange error wait for the task abort to complete
* TODO: Should there be a state change for this completion? */
break;
}
return SCI_SUCCESS;
}
/*
* 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 *sci_req,
u32 frame_index)
{
/* TODO: Is it even possible to get an unsolicited frame in the aborting state? */
scic_sds_controller_release_frame(
sci_req->owning_controller, frame_index);
return SCI_SUCCESS;
}
static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = {
[SCI_BASE_REQUEST_STATE_INITIAL] = {
},
[SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
.start_handler = scic_sds_request_constructed_state_start_handler,
.abort_handler = scic_sds_request_constructed_state_abort_handler,
},
[SCI_BASE_REQUEST_STATE_STARTED] = {
.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] = {
.complete_handler = scic_sds_request_completed_state_complete_handler,
},
[SCI_BASE_REQUEST_STATE_ABORTING] = {
.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] = {
},
};
/**
* scic_sds_request_initial_state_enter() -
* @object: This parameter specifies the base object for which the state
* transition is occurring.
*
* This method implements the actions taken when entering the
* SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial
* 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(void *object)
{
struct scic_sds_request *sci_req = object;
SET_STATE_HANDLER(
sci_req,
scic_sds_request_state_handler_table,
SCI_BASE_REQUEST_STATE_INITIAL
);
}
/**
* scic_sds_request_constructed_state_enter() -
* @object: The io request object that is to enter the constructed state.
*
* This method implements the actions taken when entering the
* 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(void *object)
{
struct scic_sds_request *sci_req = object;
SET_STATE_HANDLER(
sci_req,
scic_sds_request_state_handler_table,
SCI_BASE_REQUEST_STATE_CONSTRUCTED
);
}
/**
* scic_sds_request_started_state_enter() -
* @object: This parameter specifies the base object for which the state
* transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
*
* This method implements the actions taken when entering the
* SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a
* SCSI Task request we must enter the started substate machine. none
*/
static void scic_sds_request_started_state_enter(void *object)
{
struct scic_sds_request *sci_req = object;
SET_STATE_HANDLER(
sci_req,
scic_sds_request_state_handler_table,
SCI_BASE_REQUEST_STATE_STARTED
);
/*
* Most of the request state machines have a started substate machine so
* start its execution on the entry to the started state. */
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 occurring. This object is cast into a SCIC_SDS_IO_REQUEST
* object.
*
* This method implements the actions taken when exiting the
* SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be
* to stop the started substate machine. none
*/
static void scic_sds_request_started_state_exit(void *object)
{
struct scic_sds_request *sci_req = object;
if (sci_req->has_started_substate_machine == true)
sci_base_state_machine_stop(&sci_req->started_substate_machine);
}
/**
* scic_sds_request_completed_state_enter() -
* @object: This parameter specifies the base object for which the state
* 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_COMPLETED state. This state is entered when the
* SCIC_SDS_IO_REQUEST has completed. The method will decode the request
* 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(void *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(sci_req,
scic_sds_request_state_handler_table,
SCI_BASE_REQUEST_STATE_COMPLETED);
/* Tell the SCI_USER that the IO request is complete */
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 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(void *object)
{
struct scic_sds_request *sci_req = object;
/* Setting the abort bit in the Task Context is required by the silicon. */
sci_req->task_context_buffer->abort = 1;
SET_STATE_HANDLER(
sci_req,
scic_sds_request_state_handler_table,
SCI_BASE_REQUEST_STATE_ABORTING
);
}
/**
* scic_sds_request_final_state_enter() -
* @object: This parameter specifies the base object for which the state
* transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object.
*
* This method implements the actions taken when entering the
* SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the
* state handlers in place. none
*/
static void scic_sds_request_final_state_enter(void *object)
{
struct scic_sds_request *sci_req = object;
SET_STATE_HANDLER(
sci_req,
scic_sds_request_state_handler_table,
SCI_BASE_REQUEST_STATE_FINAL
);
}
static const struct sci_base_state scic_sds_request_state_table[] = {
[SCI_BASE_REQUEST_STATE_INITIAL] = {
.enter_state = scic_sds_request_initial_state_enter,
},
[SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
.enter_state = scic_sds_request_constructed_state_enter,
},
[SCI_BASE_REQUEST_STATE_STARTED] = {
.enter_state = scic_sds_request_started_state_enter,
.exit_state = scic_sds_request_started_state_exit
},
[SCI_BASE_REQUEST_STATE_COMPLETED] = {
.enter_state = scic_sds_request_completed_state_enter,
},
[SCI_BASE_REQUEST_STATE_ABORTING] = {
.enter_state = scic_sds_request_aborting_state_enter,
},
[SCI_BASE_REQUEST_STATE_FINAL] = {
.enter_state = scic_sds_request_final_state_enter,
},
};
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;
}
drivers/scsi/isci/core/scic_sds_request.h deleted 100644 → 0
View file @ 3bff9d54
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCIC_SDS_IO_REQUEST_H_
#define _SCIC_SDS_IO_REQUEST_H_
#include "isci.h"
#include "scic_io_request.h"
#include "state_machine.h"
#include "scu_task_context.h"
#include "scic_sds_stp_request.h"
#include "sas.h"
struct scic_sds_controller;
struct scic_sds_remote_device;
struct scic_sds_io_request_state_handler;
/**
* enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration
* depicts all of the substates for a task management request to be
* performed in the STARTED super-state.
*
*
*/
enum scic_sds_raw_request_started_task_mgmt_substates {
/**
* The AWAIT_TC_COMPLETION sub-state indicates that the started raw
* task management request is waiting for the transmission of the
* initial frame (i.e. command, task, etc.).
*/
SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION,
/**
* This sub-state indicates that the started task management request
* is waiting for the reception of an unsolicited frame
* (i.e. response IU).
*/
SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE,
};
/**
* enum _scic_sds_smp_request_started_substates - This enumeration depicts all
* of the substates for a SMP request to be performed in the STARTED
* super-state.
*
*
*/
enum scic_sds_smp_request_started_substates {
/**
* This sub-state indicates that the started task management request
* is waiting for the reception of an unsolicited frame
* (i.e. response IU).
*/
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
/**
* The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is
* waiting for the transmission of the initial frame (i.e. command, task, etc.).
*/
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
};
struct scic_sds_request {
/**
* This field contains the information for the base request state machine.
*/
struct sci_base_state_machine state_machine;
/**
* This field simply points to the controller to which this IO request
* is associated.
*/
struct scic_sds_controller *owning_controller;
/**
* This field simply points to the remote device to which this IO request
* is associated.
*/
struct scic_sds_remote_device *target_device;
/**
* This field is utilized to determine if the SCI user is managing
* the IO tag for this request or if the core is managing it.
*/
bool was_tag_assigned_by_user;
/**
* This field indicates the IO tag for this request. The IO tag is
* comprised of the task_index and a sequence count. The sequence count
* is utilized to help identify tasks from one life to another.
*/
u16 io_tag;
/**
* This field specifies the protocol being utilized for this
* IO request.
*/
SCIC_TRANSPORT_PROTOCOL protocol;
/**
* This field indicates the completion status taken from the SCUs
* completion code. It indicates the completion result for the SCU hardware.
*/
u32 scu_status;
/**
* This field indicates the completion status returned to the SCI user. It
* indicates the users view of the io request completion.
*/
u32 sci_status;
/**
* This field contains the value to be utilized when posting (e.g. Post_TC,
* Post_TC_Abort) this request to the silicon.
*/
u32 post_context;
struct scu_task_context *task_context_buffer;
struct scu_task_context tc ____cacheline_aligned;
/* could be larger with sg chaining */
#define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
/**
* This field indicates if this request is a task management request or
* normal IO request.
*/
bool is_task_management_request;
/**
* This field indicates that this request contains an initialized started
* substate machine.
*/
bool has_started_substate_machine;
/**
* This field is a pointer to the stored rx frame data. It is used in STP
* internal requests and SMP response frames. If this field is non-NULL the
* saved frame must be released on IO request completion.
*
* @todo In the future do we want to keep a list of RX frame buffers?
*/
u32 saved_rx_frame_index;
/**
* This field specifies the data necessary to manage the sub-state
* machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
*/
struct sci_base_state_machine started_substate_machine;
/**
* This field specifies the current state handlers in place for this
* IO Request object. This field is updated each time the request
* changes state.
*/
const struct scic_sds_io_request_state_handler *state_handlers;
/**
* This field in the recorded device sequence for the io request. This is
* recorded during the build operation and is compared in the start
* operation. If the sequence is different then there was a change of
* devices from the build to start operations.
*/
u8 device_sequence;
union {
struct {
union {
struct ssp_cmd_iu cmd;
struct ssp_task_iu tmf;
};
union {
struct ssp_response_iu rsp;
u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
};
} ssp;
struct {
struct smp_req cmd;
struct smp_resp rsp;
} smp;
struct {
struct scic_sds_stp_request req;
struct host_to_dev_fis cmd;
struct dev_to_host_fis rsp;
} stp;
};
};
static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req)
{
struct scic_sds_request *sci_req;
sci_req = container_of(stp_req, typeof(*sci_req), stp.req);
return sci_req;
}
/**
* enum sci_base_request_states - This enumeration depicts all the states for
* the common request state machine.
*
*
*/
enum sci_base_request_states {
/**
* Simply the initial state for the base request state machine.
*/
SCI_BASE_REQUEST_STATE_INITIAL,
/**
* This state indicates that the request has been constructed. This state
* is entered from the INITIAL state.
*/
SCI_BASE_REQUEST_STATE_CONSTRUCTED,
/**
* This state indicates that the request has been started. This state is
* entered from the CONSTRUCTED state.
*/
SCI_BASE_REQUEST_STATE_STARTED,
/**
* This state indicates that the request has completed.
* This state is entered from the STARTED state. This state is entered from
* the ABORTING state.
*/
SCI_BASE_REQUEST_STATE_COMPLETED,
/**
* This state indicates that the request is in the process of being
* terminated/aborted.
* This state is entered from the CONSTRUCTED state.
* This state is entered from the STARTED state.
*/
SCI_BASE_REQUEST_STATE_ABORTING,
/**
* Simply the final state for the base request state machine.
*/
SCI_BASE_REQUEST_STATE_FINAL,
};
typedef enum sci_status (*scic_sds_io_request_handler_t)
(struct scic_sds_request *request);
typedef enum sci_status (*scic_sds_io_request_frame_handler_t)
(struct scic_sds_request *req, u32 frame);
typedef enum sci_status (*scic_sds_io_request_event_handler_t)
(struct scic_sds_request *req, u32 event);
typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t)
(struct scic_sds_request *req, u32 completion_code);
/**
* struct scic_sds_io_request_state_handler - This is the SDS core definition
* of the state handlers.
*
*
*/
struct scic_sds_io_request_state_handler {
/**
* The start_handler specifies the method invoked when a user attempts to
* start a request.
*/
scic_sds_io_request_handler_t start_handler;
/**
* The abort_handler specifies the method invoked when a user attempts to
* abort a request.
*/
scic_sds_io_request_handler_t abort_handler;
/**
* The complete_handler specifies the method invoked when a user attempts to
* complete a request.
*/
scic_sds_io_request_handler_t complete_handler;
scic_sds_io_request_task_completion_handler_t tc_completion_handler;
scic_sds_io_request_event_handler_t event_handler;
scic_sds_io_request_frame_handler_t frame_handler;
};
extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
/**
* scic_sds_request_get_controller() -
*
* This macro will return the controller for this io request object
*/
#define scic_sds_request_get_controller(sci_req) \
((sci_req)->owning_controller)
/**
* scic_sds_request_get_device() -
*
* This macro will return the device for this io request object
*/
#define scic_sds_request_get_device(sci_req) \
((sci_req)->target_device)
/**
* scic_sds_request_get_port() -
*
* This macro will return the port for this io request object
*/
#define scic_sds_request_get_port(sci_req) \
scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req))
/**
* scic_sds_request_get_post_context() -
*
* This macro returns the constructed post context result for the io request.
*/
#define scic_sds_request_get_post_context(sci_req) \
((sci_req)->post_context)
/**
* scic_sds_request_get_task_context() -
*
* This is a helper macro to return the os handle for this request object.
*/
#define scic_sds_request_get_task_context(request) \
((request)->task_context_buffer)
/**
* scic_sds_request_set_status() -
*
* This macro will set the scu hardware status and sci request completion
* status for an io request.
*/
#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \
{ \
(request)->scu_status = (scu_status_code); \
(request)->sci_status = (sci_status_code); \
}
#define scic_sds_request_complete(a_request) \
((a_request)->state_handlers->complete_handler(a_request))
extern enum sci_status
scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code);
/**
* SCU_SGL_ZERO() -
*
* This macro zeros the hardware SGL element data
*/
#define SCU_SGL_ZERO(scu_sge) \
{ \
(scu_sge).length = 0; \
(scu_sge).address_lower = 0; \
(scu_sge).address_upper = 0; \
(scu_sge).address_modifier = 0; \
}
/**
* SCU_SGL_COPY() -
*
* This macro copys the SGL Element data from the host os to the hardware SGL
* elment data
*/
#define SCU_SGL_COPY(scu_sge, os_sge) \
{ \
(scu_sge).length = sg_dma_len(sg); \
(scu_sge).address_upper = \
upper_32_bits(sg_dma_address(sg)); \
(scu_sge).address_lower = \
lower_32_bits(sg_dma_address(sg)); \
(scu_sge).address_modifier = 0; \
}
/**
* scic_sds_request_get_user_request() -
*
* This is a helper macro to return the os handle for this request object.
*/
#define scic_sds_request_get_user_request(request) \
((request)->user_request)
/*
* *****************************************************************************
* * CORE REQUEST PROTOTYPES
* ***************************************************************************** */
void scic_sds_request_build_sgl(
struct scic_sds_request *sci_req);
void scic_sds_stp_request_assign_buffers(
struct scic_sds_request *sci_req);
void scic_sds_smp_request_assign_buffers(
struct scic_sds_request *sci_req);
/* --------------------------------------------------------------------------- */
enum sci_status scic_sds_request_start(
struct scic_sds_request *sci_req);
enum sci_status scic_sds_io_request_terminate(
struct scic_sds_request *sci_req);
enum sci_status scic_sds_io_request_complete(
struct scic_sds_request *sci_req);
void scic_sds_io_request_copy_response(
struct scic_sds_request *sci_req);
enum sci_status scic_sds_io_request_event_handler(
struct scic_sds_request *sci_req,
u32 event_code);
enum sci_status scic_sds_io_request_frame_handler(
struct scic_sds_request *sci_req,
u32 frame_index);
enum sci_status scic_sds_task_request_terminate(
struct scic_sds_request *sci_req);
/*
* *****************************************************************************
* * STARTED STATE HANDLERS
* ***************************************************************************** */
enum sci_status scic_sds_request_started_state_abort_handler(
struct scic_sds_request *sci_req);
enum sci_status scic_sds_request_started_state_tc_completion_handler(
struct scic_sds_request *sci_req,
u32 completion_code);
#endif /* _SCIC_SDS_IO_REQUEST_H_ */
drivers/scsi/isci/core/scic_sds_smp_request.h deleted 100644 → 0
View file @ 3bff9d54
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCIC_SDS_SMP_REQUEST_T_
#define _SCIC_SDS_SMP_REQUEST_T_
#include "scic_sds_request.h"
u32 scic_sds_smp_request_get_object_size(void);
void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
#endif /* _SCIC_SDS_SMP_REQUEST_T_ */
drivers/scsi/isci/core/scic_sds_stp_packet_request.h deleted 100644 → 0
View file @ 3bff9d54
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCIC_SDS_STP_PACKET_REQUEST_H_
#define _SCIC_SDS_STP_PACKET_REQUEST_H_
#include "scic_sds_stp_request.h"
/**
* This file contains the structures and constants for PACKET protocol requests.
*
*
*/
/**
*
*
* This is the enumeration of the SATA PIO DATA IN started substate machine.
*/
enum _scic_sds_stp_packet_request_started_substates {
/**
* While in this state the IO request object is waiting for the TC completion
* notification for the H2D Register FIS
*/
SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_TC_COMPLETION_SUBSTATE,
/**
* While in this state the IO request object is waiting for either a PIO Setup.
*/
SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_PIO_SETUP_SUBSTATE,
/**
* While in this state the IO request object is waiting for TC completion for
* the Packet DMA DATA fis or Raw Frame.
*/
SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_TC_COMPLETION_SUBSTATE,
/**
* The non-data IO transit to this state in this state after receiving TC
* completion. While in this state IO request object is waiting for D2H status
* frame as UF.
*/
SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_D2H_FIS_SUBSTATE,
/**
* The IO transit to this state in this state if the previous TC completion status
* is not success and the atapi device is suspended due to target device failed the IO.
* While in this state IO request object is waiting for device coming out of the
* suspension state then complete the IO.
*/
SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMPLETION_DELAY_SUBSTATE,
};
#define scic_sds_stp_packet_request_construct(request) SCI_FAILURE
#define scu_stp_packet_request_command_phase_construct_task_context(reqeust, tc)
#define scu_stp_packet_request_command_phase_reconstruct_raw_frame_task_context(reqeust, tc)
#define scic_sds_stp_packet_request_process_status_fis(reqeust, fis) SCI_FAILURE
#define scic_sds_stp_packet_internal_request_sense_build_sgl(request)
#endif /* _SCIC_SDS_STP_PACKET_REQUEST_H_ */
drivers/scsi/isci/core/scic_sds_stp_pio_request.h deleted 100644 → 0
View file @ 3bff9d54
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCIC_SDS_SATA_PIO_REQUEST_H_
#define _SCIC_SDS_SATA_PIO_REQUEST_H_
#include "scic_sds_request.h"
#include "scu_task_context.h"
/**
* This file contains the structures and constants for SATA PIO requests.
*
*
*/
/**
*
*
* This is the enumeration of the SATA PIO DATA IN started substate machine.
*/
enum _scic_sds_stp_request_started_pio_substates {
/**
* While in this state the IO request object is waiting for the TC completion
* notification for the H2D Register FIS
*/
SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
/**
* While in this state the IO request object is waiting for either a PIO Setup
* FIS or a D2H register FIS. The type of frame received is based on the
* result of the prior frame and line conditions.
*/
SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
/**
* While in this state the IO request object is waiting for a DATA frame from
* the device.
*/
SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
/**
* While in this state the IO request object is waiting to transmit the next data
* frame to the device.
*/
SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
};
struct scic_sds_stp_request;
#endif /* _SCIC_SDS_SATA_PIO_REQUEST_H_ */
drivers/scsi/isci/core/scic_task_request.h deleted 100644 → 0
View file @ 3bff9d54
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCIC_TASK_REQUEST_H_
#define _SCIC_TASK_REQUEST_H_
#include "isci.h"
struct scic_sds_request;
struct scic_sds_remote_device;
struct scic_sds_controller;
enum sci_status scic_task_request_construct(
struct scic_sds_controller *scic_controller,
struct scic_sds_remote_device *scic_remote_device,
u16 io_tag, struct scic_sds_request *sci_req);
/**
* scic_task_request_construct_ssp() - This method is called by the SCI user to
* construct all SCI Core SSP task management requests. Memory
* initialization and functionality common to all task request types is
* performed in this method.
* @scic_task_request: This parameter specifies the handle to the core task
* request object for which to construct a SATA specific task management
* request.
*
* Indicate if the controller successfully built the task request. SCI_SUCCESS
* This value is returned if the task request was successfully built.
*/
enum sci_status scic_task_request_construct_ssp(
struct scic_sds_request *scic_task_request);
/**
* scic_task_request_construct_sata() - This method is called by the SCI user
* to construct all SCI Core SATA task management requests. Memory
* initialization and functionality common to all task request types is
* performed in this method.
* @scic_task_request_handle: This parameter specifies the handle to the core
* task request object for which to construct a SATA specific task
* management request.
*
* Indicate if the controller successfully built the task request. SCI_SUCCESS
* This value is returned if the task request was successfully built.
*/
enum sci_status scic_task_request_construct_sata(
struct scic_sds_request *scic_task_request_handle);
#endif /* _SCIC_TASK_REQUEST_H_ */
drivers/scsi/isci/host.c
View file @ f1f52e75
......@@ -61,9 +61,7 @@
#include "probe_roms.h"
#include "remote_device.h"
#include "request.h"
#include "scic_io_request.h"
#include "scic_sds_port_configuration_agent.h"
#include "sci_util.h"
#include "scu_completion_codes.h"
#include "scu_event_codes.h"
#include "registers.h"
......
drivers/scsi/isci/isci.h
View file @ f1f52e75
......@@ -521,6 +521,25 @@ enum sci_task_status {
};
/**
* sci_swab32_cpy - convert between scsi and scu-hardware byte format
* @dest: receive the 4-byte endian swapped version of src
* @src: word aligned source buffer
*
* scu hardware handles SSP/SMP control, response, and unidentified
* frames in "big endian dword" order. Regardless of host endian this
* is always a swab32()-per-dword conversion of the standard definition,
* i.e. single byte fields swapped and multi-byte fields in little-
* endian
*/
static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
{
u32 *dest = _dest, *src = _src;
while (--word_cnt >= 0)
dest[word_cnt] = swab32(src[word_cnt]);
}
extern unsigned char no_outbound_task_to;
extern u16 ssp_max_occ_to;
extern u16 stp_max_occ_to;
......
drivers/scsi/isci/port.c
View file @ f1f52e75
......@@ -55,7 +55,6 @@
#include <linux/workqueue.h>
#include "isci.h"
#include "scic_io_request.h"
#include "scic_phy.h"
#include "scic_sds_phy.h"
#include "scic_port.h"
......
drivers/scsi/isci/remote_device.c
View file @ f1f52e75
......@@ -57,14 +57,11 @@
#include "port.h"
#include "remote_device.h"
#include "request.h"
#include "scic_io_request.h"
#include "scic_phy.h"
#include "scic_port.h"
#include "scic_sds_phy.h"
#include "scic_sds_port.h"
#include "remote_node_context.h"
#include "scic_sds_request.h"
#include "sci_util.h"
#include "scu_event_codes.h"
#include "task.h"
......
drivers/scsi/isci/remote_node_context.c
View file @ f1f52e75
......@@ -58,7 +58,6 @@
#include "scic_sds_port.h"
#include "remote_device.h"
#include "remote_node_context.h"
#include "sci_util.h"
#include "scu_event_codes.h"
#include "scu_task_context.h"
......
drivers/scsi/isci/remote_node_table.c
View file @ f1f52e75
......@@ -59,7 +59,6 @@
*
*
*/
#include "sci_util.h"
#include "remote_node_table.h"
#include "remote_node_context.h"
......
drivers/scsi/isci/request.c
View file @ f1f52e75
This source diff could not be displayed because it is too large. You can view the blob instead.
drivers/scsi/isci/request.h
View file @ f1f52e75
......@@ -58,7 +58,8 @@
#include "isci.h"
#include "host.h"
#include "scic_sds_request.h"
#include "scu_task_context.h"
#include "stp_request.h"
/**
* struct isci_request_status - This enum defines the possible states of an I/O
......@@ -82,6 +83,151 @@ enum task_type {
tmf_task = 1
};
enum sci_request_protocol {
SCIC_NO_PROTOCOL,
SCIC_SMP_PROTOCOL,
SCIC_SSP_PROTOCOL,
SCIC_STP_PROTOCOL
}; /* XXX remove me, use sas_task.dev instead */;
struct scic_sds_request {
/**
* This field contains the information for the base request state machine.
*/
struct sci_base_state_machine state_machine;
/**
* This field simply points to the controller to which this IO request
* is associated.
*/
struct scic_sds_controller *owning_controller;
/**
* This field simply points to the remote device to which this IO request
* is associated.
*/
struct scic_sds_remote_device *target_device;
/**
* This field is utilized to determine if the SCI user is managing
* the IO tag for this request or if the core is managing it.
*/
bool was_tag_assigned_by_user;
/**
* This field indicates the IO tag for this request. The IO tag is
* comprised of the task_index and a sequence count. The sequence count
* is utilized to help identify tasks from one life to another.
*/
u16 io_tag;
/**
* This field specifies the protocol being utilized for this
* IO request.
*/
enum sci_request_protocol protocol;
/**
* This field indicates the completion status taken from the SCUs
* completion code. It indicates the completion result for the SCU hardware.
*/
u32 scu_status;
/**
* This field indicates the completion status returned to the SCI user. It
* indicates the users view of the io request completion.
*/
u32 sci_status;
/**
* This field contains the value to be utilized when posting (e.g. Post_TC,
* Post_TC_Abort) this request to the silicon.
*/
u32 post_context;
struct scu_task_context *task_context_buffer;
struct scu_task_context tc ____cacheline_aligned;
/* could be larger with sg chaining */
#define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
/**
* This field indicates if this request is a task management request or
* normal IO request.
*/
bool is_task_management_request;
/**
* This field indicates that this request contains an initialized started
* substate machine.
*/
bool has_started_substate_machine;
/**
* This field is a pointer to the stored rx frame data. It is used in STP
* internal requests and SMP response frames. If this field is non-NULL the
* saved frame must be released on IO request completion.
*
* @todo In the future do we want to keep a list of RX frame buffers?
*/
u32 saved_rx_frame_index;
/**
* This field specifies the data necessary to manage the sub-state
* machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
*/
struct sci_base_state_machine started_substate_machine;
/**
* This field specifies the current state handlers in place for this
* IO Request object. This field is updated each time the request
* changes state.
*/
const struct scic_sds_io_request_state_handler *state_handlers;
/**
* This field in the recorded device sequence for the io request. This is
* recorded during the build operation and is compared in the start
* operation. If the sequence is different then there was a change of
* devices from the build to start operations.
*/
u8 device_sequence;
union {
struct {
union {
struct ssp_cmd_iu cmd;
struct ssp_task_iu tmf;
};
union {
struct ssp_response_iu rsp;
u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
};
} ssp;
struct {
struct smp_req cmd;
struct smp_resp rsp;
} smp;
struct {
struct scic_sds_stp_request req;
struct host_to_dev_fis cmd;
struct dev_to_host_fis rsp;
} stp;
};
};
static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req)
{
struct scic_sds_request *sci_req;
sci_req = container_of(stp_req, typeof(*sci_req), stp.req);
return sci_req;
}
struct isci_request {
enum isci_request_status status;
enum task_type ttype;
......@@ -125,6 +271,273 @@ static inline struct isci_request *sci_req_to_ireq(struct scic_sds_request *sci_
return ireq;
}
/**
* enum sci_base_request_states - This enumeration depicts all the states for
* the common request state machine.
*
*
*/
enum sci_base_request_states {
/**
* Simply the initial state for the base request state machine.
*/
SCI_BASE_REQUEST_STATE_INITIAL,
/**
* This state indicates that the request has been constructed. This state
* is entered from the INITIAL state.
*/
SCI_BASE_REQUEST_STATE_CONSTRUCTED,
/**
* This state indicates that the request has been started. This state is
* entered from the CONSTRUCTED state.
*/
SCI_BASE_REQUEST_STATE_STARTED,
/**
* This state indicates that the request has completed.
* This state is entered from the STARTED state. This state is entered from
* the ABORTING state.
*/
SCI_BASE_REQUEST_STATE_COMPLETED,
/**
* This state indicates that the request is in the process of being
* terminated/aborted.
* This state is entered from the CONSTRUCTED state.
* This state is entered from the STARTED state.
*/
SCI_BASE_REQUEST_STATE_ABORTING,
/**
* Simply the final state for the base request state machine.
*/
SCI_BASE_REQUEST_STATE_FINAL,
};
typedef enum sci_status (*scic_sds_io_request_handler_t)
(struct scic_sds_request *request);
typedef enum sci_status (*scic_sds_io_request_frame_handler_t)
(struct scic_sds_request *req, u32 frame);
typedef enum sci_status (*scic_sds_io_request_event_handler_t)
(struct scic_sds_request *req, u32 event);
typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t)
(struct scic_sds_request *req, u32 completion_code);
/**
* struct scic_sds_io_request_state_handler - This is the SDS core definition
* of the state handlers.
*
*
*/
struct scic_sds_io_request_state_handler {
/**
* The start_handler specifies the method invoked when a user attempts to
* start a request.
*/
scic_sds_io_request_handler_t start_handler;
/**
* The abort_handler specifies the method invoked when a user attempts to
* abort a request.
*/
scic_sds_io_request_handler_t abort_handler;
/**
* The complete_handler specifies the method invoked when a user attempts to
* complete a request.
*/
scic_sds_io_request_handler_t complete_handler;
scic_sds_io_request_task_completion_handler_t tc_completion_handler;
scic_sds_io_request_event_handler_t event_handler;
scic_sds_io_request_frame_handler_t frame_handler;
};
extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
/**
* scic_sds_request_get_controller() -
*
* This macro will return the controller for this io request object
*/
#define scic_sds_request_get_controller(sci_req) \
((sci_req)->owning_controller)
/**
* scic_sds_request_get_device() -
*
* This macro will return the device for this io request object
*/
#define scic_sds_request_get_device(sci_req) \
((sci_req)->target_device)
/**
* scic_sds_request_get_port() -
*
* This macro will return the port for this io request object
*/
#define scic_sds_request_get_port(sci_req) \
scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req))
/**
* scic_sds_request_get_post_context() -
*
* This macro returns the constructed post context result for the io request.
*/
#define scic_sds_request_get_post_context(sci_req) \
((sci_req)->post_context)
/**
* scic_sds_request_get_task_context() -
*
* This is a helper macro to return the os handle for this request object.
*/
#define scic_sds_request_get_task_context(request) \
((request)->task_context_buffer)
/**
* scic_sds_request_set_status() -
*
* This macro will set the scu hardware status and sci request completion
* status for an io request.
*/
#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \
{ \
(request)->scu_status = (scu_status_code); \
(request)->sci_status = (sci_status_code); \
}
#define scic_sds_request_complete(a_request) \
((a_request)->state_handlers->complete_handler(a_request))
extern enum sci_status
scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code);
/**
* SCU_SGL_ZERO() -
*
* This macro zeros the hardware SGL element data
*/
#define SCU_SGL_ZERO(scu_sge) \
{ \
(scu_sge).length = 0; \
(scu_sge).address_lower = 0; \
(scu_sge).address_upper = 0; \
(scu_sge).address_modifier = 0; \
}
/**
* SCU_SGL_COPY() -
*
* This macro copys the SGL Element data from the host os to the hardware SGL
* elment data
*/
#define SCU_SGL_COPY(scu_sge, os_sge) \
{ \
(scu_sge).length = sg_dma_len(sg); \
(scu_sge).address_upper = \
upper_32_bits(sg_dma_address(sg)); \
(scu_sge).address_lower = \
lower_32_bits(sg_dma_address(sg)); \
(scu_sge).address_modifier = 0; \
}
void scic_sds_request_build_sgl(struct scic_sds_request *sci_req);
void scic_sds_stp_request_assign_buffers(struct scic_sds_request *sci_req);
void scic_sds_smp_request_assign_buffers(struct scic_sds_request *sci_req);
enum sci_status scic_sds_request_start(struct scic_sds_request *sci_req);
enum sci_status scic_sds_io_request_terminate(struct scic_sds_request *sci_req);
void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req);
enum sci_status scic_sds_io_request_event_handler(struct scic_sds_request *sci_req,
u32 event_code);
enum sci_status scic_sds_io_request_frame_handler(struct scic_sds_request *sci_req,
u32 frame_index);
enum sci_status scic_sds_task_request_terminate(struct scic_sds_request *sci_req);
enum sci_status scic_sds_request_started_state_abort_handler(struct scic_sds_request *sci_req);
/**
* enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration
* depicts all of the substates for a task management request to be
* performed in the STARTED super-state.
*
*
*/
enum scic_sds_raw_request_started_task_mgmt_substates {
/**
* The AWAIT_TC_COMPLETION sub-state indicates that the started raw
* task management request is waiting for the transmission of the
* initial frame (i.e. command, task, etc.).
*/
SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION,
/**
* This sub-state indicates that the started task management request
* is waiting for the reception of an unsolicited frame
* (i.e. response IU).
*/
SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE,
};
/**
* enum _scic_sds_smp_request_started_substates - This enumeration depicts all
* of the substates for a SMP request to be performed in the STARTED
* super-state.
*
*
*/
enum scic_sds_smp_request_started_substates {
/**
* This sub-state indicates that the started task management request
* is waiting for the reception of an unsolicited frame
* (i.e. response IU).
*/
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
/**
* The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is
* waiting for the transmission of the initial frame (i.e. command, task, etc.).
*/
SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
};
/* XXX open code in caller */
static inline void *scic_request_get_virt_addr(struct scic_sds_request *sci_req,
dma_addr_t phys_addr)
{
struct isci_request *ireq = sci_req_to_ireq(sci_req);
dma_addr_t offset;
BUG_ON(phys_addr < ireq->request_daddr);
offset = phys_addr - ireq->request_daddr;
BUG_ON(offset >= sizeof(*ireq));
return (char *)ireq + offset;
}
/* XXX open code in caller */
static inline dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sci_req,
void *virt_addr)
{
struct isci_request *ireq = sci_req_to_ireq(sci_req);
char *requested_addr = (char *)virt_addr;
char *base_addr = (char *)ireq;
BUG_ON(requested_addr < base_addr);
BUG_ON((requested_addr - base_addr) >= sizeof(*ireq));
return ireq->request_daddr + (requested_addr - base_addr);
}
/**
* This function gets the status of the request object.
* @request: This parameter points to the isci_request object
......@@ -337,12 +750,6 @@ static inline void isci_request_unmap_sgl(
}
}
void isci_request_io_request_complete(
struct isci_host *isci_host,
struct isci_request *request,
enum sci_io_status completion_status);
/**
* isci_request_io_request_get_next_sge() - This function is called by the sci
* core to retrieve the next sge for a given request.
......@@ -385,13 +792,16 @@ static inline void *isci_request_io_request_get_next_sge(
return ret;
}
void isci_terminate_pending_requests(
struct isci_host *isci_host,
struct isci_remote_device *isci_device,
enum isci_request_status new_request_state);
void isci_terminate_pending_requests(struct isci_host *isci_host,
struct isci_remote_device *isci_device,
enum isci_request_status new_request_state);
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);
enum sci_status scic_task_request_construct_ssp(struct scic_sds_request *sci_req);
enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req);
enum sci_status scic_io_request_construct_smp(struct scic_sds_request *sci_req);
void scic_stp_io_request_set_ncq_tag(struct scic_sds_request *sci_req, u16 ncq_tag);
void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
#endif /* !defined(_ISCI_REQUEST_H_) */
drivers/scsi/isci/sata.c
View file @ f1f52e75
......@@ -56,8 +56,6 @@
#include <scsi/sas.h>
#include "isci.h"
#include "remote_device.h"
#include "scic_io_request.h"
#include "scic_task_request.h"
#include "task.h"
#include "request.h"
#include "sata.h"
......
drivers/scsi/isci/core/scic_sds_smp_request.c → drivers/scsi/isci/smp_request.c
View file @ f1f52e75
......@@ -56,9 +56,7 @@
#include <scsi/sas.h>
#include "state_machine.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "scic_sds_smp_request.h"
#include "sci_util.h"
#include "request.h"
#include "scu_completion_codes.h"
#include "scu_task_context.h"
#include "host.h"
......
drivers/scsi/isci/core/scic_sds_ssp_request.c → drivers/scsi/isci/ssp_request.c
View file @ f1f52e75
......@@ -54,10 +54,10 @@
*/
#include "host.h"
#include "request.h"
#include "state_machine.h"
#include "scic_sds_request.h"
#include "scu_completion_codes.h"
#include "scu_task_context.h"
#include "scu_completion_codes.h"
/**
* This method processes the completions transport layer (TL) status to
......
drivers/scsi/isci/core/scic_sds_stp_request.c → drivers/scsi/isci/stp_request.c
View file @ f1f52e75
......@@ -56,13 +56,9 @@
#include <scsi/sas.h>
#include "sas.h"
#include "state_machine.h"
#include "scic_io_request.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "scic_sds_stp_pio_request.h"
#include "scic_sds_stp_request.h"
#include "stp_request.h"
#include "unsolicited_frame_control.h"
#include "sci_util.h"
#include "scu_completion_codes.h"
#include "scu_event_codes.h"
#include "scu_task_context.h"
......
drivers/scsi/isci/core/scic_sds_stp_request.h → drivers/scsi/isci/stp_request.h
View file @ f1f52e75
......@@ -152,27 +152,44 @@ enum scic_sds_stp_request_started_soft_reset_substates {
SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE,
};
u32 scic_sds_stp_request_get_object_size(void);
enum sci_status scic_sds_stp_pio_request_construct(
struct scic_sds_request *scic_io_request,
bool copy_rx_frame);
enum sci_status scic_sds_stp_udma_request_construct(
struct scic_sds_request *sci_req,
u32 transfer_length,
enum dma_data_direction dir);
enum sci_status scic_sds_stp_non_data_request_construct(
struct scic_sds_request *sci_req);
enum sci_status scic_sds_stp_soft_reset_request_construct(
struct scic_sds_request *sci_req);
enum sci_status scic_sds_stp_ncq_request_construct(
struct scic_sds_request *sci_req,
u32 transfer_length,
enum dma_data_direction dir);
/* This is the enumeration of the SATA PIO DATA IN started substate machine. */
enum _scic_sds_stp_request_started_pio_substates {
/**
* While in this state the IO request object is waiting for the TC completion
* notification for the H2D Register FIS
*/
SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
/**
* While in this state the IO request object is waiting for either a PIO Setup
* FIS or a D2H register FIS. The type of frame received is based on the
* result of the prior frame and line conditions.
*/
SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
/**
* While in this state the IO request object is waiting for a DATA frame from
* the device.
*/
SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
/**
* While in this state the IO request object is waiting to transmit the next data
* frame to the device.
*/
SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
};
struct scic_sds_request;
enum sci_status scic_sds_stp_pio_request_construct(struct scic_sds_request *sci_req,
bool copy_rx_frame);
enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
u32 transfer_length,
enum dma_data_direction dir);
enum sci_status scic_sds_stp_non_data_request_construct(struct scic_sds_request *sci_req);
enum sci_status scic_sds_stp_soft_reset_request_construct(struct scic_sds_request *sci_req);
enum sci_status scic_sds_stp_ncq_request_construct(struct scic_sds_request *sci_req,
u32 transfer_length,
enum dma_data_direction dir);
#endif /* _SCIC_SDS_STP_REQUEST_T_ */
drivers/scsi/isci/task.c
View file @ f1f52e75
......@@ -56,15 +56,12 @@
#include <linux/completion.h>
#include <linux/irqflags.h>
#include "sas.h"
#include "scic_task_request.h"
#include "scic_io_request.h"
#include "remote_device.h"
#include "remote_node_context.h"
#include "isci.h"
#include "request.h"
#include "sata.h"
#include "task.h"
#include "scic_sds_request.h"
#include "timers.h"
/**
......
drivers/scsi/isci/unsolicited_frame_control.c
View file @ f1f52e75
......@@ -56,7 +56,6 @@
#include "host.h"
#include "unsolicited_frame_control.h"
#include "registers.h"
#include "sci_util.h"
/**
* This method will program the unsolicited frames (UFs) into the UF address
......@@ -93,10 +92,8 @@ static void scic_sds_unsolicited_frame_control_construct_frames(
for (index = 0; index < unused_uf_header_entries; index++) {
uf = &uf_control->buffers.array[index];
sci_cb_make_physical_address(
uf_control->address_table.array[index], 0, 0
);
uf->buffer = NULL;
uf_control->address_table.array[index] = 0;
uf->header = &uf_control->headers.array[index];
uf->state = UNSOLICITED_FRAME_EMPTY;
}
......
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