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/*-
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/sys/dev/isci/scil/scic_sds_request.h 231689 2012-02-14 15:58:49Z jimharris $
*/
#ifndef _SCIC_SDS_IO_REQUEST_H_
#define _SCIC_SDS_IO_REQUEST_H_
/**
* @file
*
* @brief This file contains the structures, constants and prototypes for the
* SCIC_SDS_IO_REQUEST object.
*/
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#include <dev/isci/scil/scic_io_request.h>
#include <dev/isci/scil/sci_base_request.h>
#include <dev/isci/scil/sci_base_state_machine_logger.h>
#include <dev/isci/scil/scu_task_context.h>
#include <dev/isci/scil/intel_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
*
* @brief This enumeration depicts all of the substates for a task
* management request to be performed in the STARTED super-state.
*/
typedef 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,
SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_MAX_SUBSTATES
} SCIC_SDS_RAW_REQUEST_STARTED_TASK_MGMT_SUBSTATES;
/**
* @enum _SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATES
*
* @brief This enumeration depicts all of the substates for a SMP
* request to be performed in the STARTED super-state.
*/
typedef 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,
SCIC_SDS_SMP_REQUEST_STARTED_MAX_SUBSTATES
} SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATES;
/**
* @struct SCIC_SDS_IO_REQUEST
*
* @brief This structure contains or references all of the data necessary
* to process a task management or normal IO request.
*/
typedef struct SCIC_SDS_REQUEST
{
/**
* This field indictes the parent object of the request.
*/
SCI_BASE_REQUEST_T parent;
void *user_request;
/**
* 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 sat protocol being utilized for this
* IO request, such as SAT_PROTOCOL_PIO_DATA_IN, SAT_PROTOCOL_FPDMA etc.
*/
U8 sat_protocol;
/**
* 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;
void *command_buffer;
void *response_buffer;
SCU_TASK_CONTEXT_T *task_context_buffer;
SCU_SGL_ELEMENT_PAIR_T *sgl_element_pair_buffer;
/**
* 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.
*/
SCI_BASE_STATE_MACHINE_T 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.
*/
struct SCIC_SDS_IO_REQUEST_STATE_HANDLER *state_handlers;
#ifdef SCI_LOGGING
/**
* This field is the observer of the started subsate machine
*/
SCI_BASE_STATE_MACHINE_LOGGER_T started_substate_machine_logger;
#endif
/**
* 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;
} SCIC_SDS_REQUEST_T;
typedef SCI_STATUS (*SCIC_SDS_IO_REQUEST_FRAME_HANDLER_T)(
SCIC_SDS_REQUEST_T * this_request,
U32 frame_index);
typedef SCI_STATUS (*SCIC_SDS_IO_REQUEST_EVENT_HANDLER_T)(
SCIC_SDS_REQUEST_T * this_request,
U32 event_code);
typedef SCI_STATUS (*SCIC_SDS_IO_REQUEST_TASK_COMPLETION_HANDLER_T)(
SCIC_SDS_REQUEST_T * this_request,
U32 completion_code);
/**
* @struct SCIC_SDS_IO_REQUEST_STATE_HANDLER
*
* @brief This is the SDS core definition of the state handlers.
*/
typedef struct SCIC_SDS_IO_REQUEST_STATE_HANDLER
{
SCI_BASE_REQUEST_STATE_HANDLER_T parent;
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;
} SCIC_SDS_IO_REQUEST_STATE_HANDLER_T;
extern SCI_BASE_STATE_T scic_sds_request_state_table[];
extern SCIC_SDS_IO_REQUEST_STATE_HANDLER_T
scic_sds_request_state_handler_table[];
extern SCI_BASE_STATE_T scic_sds_io_request_started_task_mgmt_substate_table[];
extern SCIC_SDS_IO_REQUEST_STATE_HANDLER_T
scic_sds_ssp_task_request_started_substate_handler_table[];
extern SCI_BASE_STATE_T scic_sds_smp_request_started_substate_table[];
extern SCIC_SDS_IO_REQUEST_STATE_HANDLER_T
scic_sds_smp_request_started_substate_handler_table[];
/**
* This macro returns the maximum number of SGL element paris that we will
* support in a single IO request.
*/
#define SCU_MAX_SGL_ELEMENT_PAIRS ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
/**
* This macro will return the controller for this io request object
*/
#define scic_sds_request_get_controller(this_request) \
((this_request)->owning_controller)
/**
* This macro will return the device for this io request object
*/
#define scic_sds_request_get_device(this_request) \
((this_request)->target_device)
/**
* This macro will return the port for this io request object
*/
#define scic_sds_request_get_port(this_request) \
scic_sds_remote_device_get_port(scic_sds_request_get_device(this_request))
/**
* This macro returns the constructed post context result for the io
* request.
*/
#define scic_sds_request_get_post_context(this_request) \
((this_request)->post_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)
#define CACHE_LINE_SIZE (64)
#define scic_sds_request_align_task_context_buffer(address) \
((SCU_TASK_CONTEXT_T *)( \
(((POINTER_UINT)(address)) + (CACHE_LINE_SIZE - 1)) \
& ~(CACHE_LINE_SIZE - 1) \
))
/**
* This macro will align the memory address so that it is correct for the SCU
* hardware to DMA the SGL element pairs.
*/
#define scic_sds_request_align_sgl_element_buffer(address) \
((SCU_SGL_ELEMENT_PAIR_T *)( \
((char *)(address)) \
+ ( \
((~(POINTER_UINT)(address)) + 1) \
& (sizeof(SCU_SGL_ELEMENT_PAIR_T) - 1) \
) \
))
/**
* 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->parent.complete_handler(&(a_request)->parent))
U32 scic_sds_request_get_min_timer_count(void);
U32 scic_sds_request_get_max_timer_count(void);
/**
* This macro invokes the core state task completion handler for the
* SCIC_SDS_IO_REQUEST_T object.
*/
#define scic_sds_io_request_tc_completion(this_request, completion_code) \
{ \
if (this_request->parent.state_machine.current_state_id \
== SCI_BASE_REQUEST_STATE_STARTED \
&& this_request->has_started_substate_machine \
== FALSE) \
scic_sds_request_started_state_tc_completion_handler(this_request, completion_code); \
else \
this_request->state_handlers->tc_completion_handler(this_request, completion_code); \
}
/**
* 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; \
}
/**
* This macro copys the SGL Element data from the host os to the hardware SGL
* elment data
*/
#define SCU_SGL_COPY(os_handle, scu_sge, os_sge) \
{ \
(scu_sge).length = \
scic_cb_sge_get_length_field(os_handle, os_sge); \
(scu_sge).address_upper = \
sci_cb_physical_address_upper(scic_cb_sge_get_address_field(os_handle, os_sge)); \
(scu_sge).address_lower = \
sci_cb_physical_address_lower(scic_cb_sge_get_address_field(os_handle, os_sge)); \
(scu_sge).address_modifier = 0; \
}
//*****************************************************************************
//* CORE REQUEST PROTOTYPES
//*****************************************************************************
SCU_SGL_ELEMENT_PAIR_T *scic_sds_request_get_sgl_element_pair(
SCIC_SDS_REQUEST_T *this_request,
U32 sgl_pair_index
);
void scic_sds_request_build_sgl(
SCIC_SDS_REQUEST_T *this_request
);
void scic_sds_ssp_io_request_assign_buffers(
SCIC_SDS_REQUEST_T *this_request
);
void scic_sds_ssp_task_request_assign_buffers(
SCIC_SDS_REQUEST_T *this_request
);
void scic_sds_stp_request_assign_buffers(
SCIC_SDS_REQUEST_T * this_request
);
void scic_sds_smp_request_assign_buffers(
SCIC_SDS_REQUEST_T * this_request
);
// ---------------------------------------------------------------------------
SCI_STATUS scic_sds_request_start(
SCIC_SDS_REQUEST_T *this_request
);
SCI_STATUS scic_sds_io_request_terminate(
SCIC_SDS_REQUEST_T *this_request
);
SCI_STATUS scic_sds_io_request_complete(
SCIC_SDS_REQUEST_T *this_request
);
void scic_sds_io_request_copy_response(
SCIC_SDS_REQUEST_T *this_request
);
SCI_STATUS scic_sds_io_request_event_handler(
SCIC_SDS_REQUEST_T *this_request,
U32 event_code
);
SCI_STATUS scic_sds_io_request_frame_handler(
SCIC_SDS_REQUEST_T *this_request,
U32 frame_index
);
SCI_STATUS scic_sds_task_request_complete(
SCIC_SDS_REQUEST_T *this_request
);
SCI_STATUS scic_sds_task_request_terminate(
SCIC_SDS_REQUEST_T *this_request
);
#ifdef SCI_LOGGING
void scic_sds_request_initialize_state_logging(
SCIC_SDS_REQUEST_T *this_request
);
void scic_sds_request_deinitialize_state_logging(
SCIC_SDS_REQUEST_T *this_request
);
#else // SCI_LOGGING
#define scic_sds_request_initialize_state_logging(x)
#define scic_sds_request_deinitialize_state_logging(x)
#endif // SCI_LOGGING
//*****************************************************************************
//* DEFAULT STATE HANDLERS
//*****************************************************************************
SCI_STATUS scic_sds_request_default_start_handler(
SCI_BASE_REQUEST_T *this_request
);
SCI_STATUS scic_sds_request_default_abort_handler(
SCI_BASE_REQUEST_T *this_request
);
SCI_STATUS scic_sds_request_default_complete_handler(
SCI_BASE_REQUEST_T *this_request
);
SCI_STATUS scic_sds_request_default_destruct_handler(
SCI_BASE_REQUEST_T *this_request
);
SCI_STATUS scic_sds_request_default_tc_completion_handler(
SCIC_SDS_REQUEST_T * this_request,
U32 completion_code
);
SCI_STATUS scic_sds_request_default_event_handler(
SCIC_SDS_REQUEST_T * this_request,
U32 event_code
);
SCI_STATUS scic_sds_request_default_frame_handler(
SCIC_SDS_REQUEST_T * this_request,
U32 frame_index
);
//*****************************************************************************
//* STARTED STATE HANDLERS
//*****************************************************************************
SCI_STATUS scic_sds_request_started_state_abort_handler(
SCI_BASE_REQUEST_T *this_request
);
SCI_STATUS scic_sds_request_started_state_tc_completion_handler(
SCIC_SDS_REQUEST_T * this_request,
U32 completion_code
);
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // _SCIC_SDS_IO_REQUEST_H_