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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: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2011-05-10 02:28:45 -07:00
parent 3bff9d54ec
commit f1f52e7593
27 changed files with 2238 additions and 3242 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/scsi/isci/Makefile
View File

@ -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

86
drivers/scsi/isci/core/sci_util.c
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@ -1,86 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <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);
}

97
drivers/scsi/isci/core/sci_util.h
View File

@ -1,97 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_ */

226
drivers/scsi/isci/core/scic_io_request.h
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@ -1,226 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_ */

1
drivers/scsi/isci/core/scic_sds_phy.c
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@ -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"

2
drivers/scsi/isci/core/scic_sds_port.c
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@ -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)

1523
drivers/scsi/isci/core/scic_sds_request.c
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File diff suppressed because it is too large Load Diff

491
drivers/scsi/isci/core/scic_sds_request.h
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@ -1,491 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_ */

67
drivers/scsi/isci/core/scic_sds_smp_request.h
View File

@ -1,67 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_ */

113
drivers/scsi/isci/core/scic_sds_stp_packet_request.h
View File

@ -1,113 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_ */

104
drivers/scsi/isci/core/scic_sds_stp_pio_request.h
View File

@ -1,104 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_ */

104
drivers/scsi/isci/core/scic_task_request.h
View File

@ -1,104 +0,0 @@
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_ */

2
drivers/scsi/isci/host.c
View File

@ -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"

19
drivers/scsi/isci/isci.h
View File

@ -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;

1
drivers/scsi/isci/port.c
View File

@ -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"

3
drivers/scsi/isci/remote_device.c
View File

@ -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"

1
drivers/scsi/isci/remote_node_context.c
View File

@ -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"

1
drivers/scsi/isci/remote_node_table.c
View File

@ -59,7 +59,6 @@
*
*
*/
#include "sci_util.h"
#include "remote_node_table.h"
#include "remote_node_context.h"

2112
drivers/scsi/isci/request.c
View File

File diff suppressed because it is too large Load Diff

442
drivers/scsi/isci/request.h
View File

@ -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_) */

2
drivers/scsi/isci/sata.c
View File

@ -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"

4
drivers/scsi/isci/core/scic_sds_smp_request.c → drivers/scsi/isci/smp_request.c
View File

@ -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"

4
drivers/scsi/isci/core/scic_sds_ssp_request.c → drivers/scsi/isci/ssp_request.c
View File

@ -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

6
drivers/scsi/isci/core/scic_sds_stp_request.c → drivers/scsi/isci/stp_request.c
View File

@ -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"

53
drivers/scsi/isci/core/scic_sds_stp_request.h → drivers/scsi/isci/stp_request.h
View File

@ -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);
/* 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,
enum sci_status scic_sds_stp_pio_request_construct(
struct scic_sds_request *scic_io_request,
bool copy_rx_frame);
/**
* 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,
enum sci_status scic_sds_stp_udma_request_construct(
struct scic_sds_request *sci_req,
u32 transfer_length,
enum dma_data_direction dir);
/**
* 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,
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);
/**
* 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_ */

3
drivers/scsi/isci/task.c
View File

@ -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"
/**

5
drivers/scsi/isci/unsolicited_frame_control.c
View File

@ -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;
}