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freebsd-skq/sys/dev/isci/scil/scic_sds_remote_device.h
Eitan Adler 0af1b47258 s/ is is / is /g 
s/ a a / a /g

Approved by:	cperciva
MFC after:	3 days
2012-09-14 22:00:03 +00:00

647 lines
20 KiB
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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.
*
* $FreeBSD$
*/
#ifndef _SCIC_SDS_REMOTE_DEVICE_H_
#define _SCIC_SDS_REMOTE_DEVICE_H_
/**
* @file
*
* @brief This file contains the structures, constants, and prototypes for the
* SCIC_SDS_REMOTE_DEVICE object.
*/
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#include <dev/isci/scil/intel_sas.h>
#include <dev/isci/scil/sci_base_remote_device.h>
#include <dev/isci/scil/sci_base_request.h>
#include <dev/isci/scil/sci_base_state_machine_logger.h>
#include <dev/isci/scil/scu_remote_node_context.h>
#include <dev/isci/scil/scic_sds_remote_node_context.h>
struct SCIC_SDS_CONTROLLER;
struct SCIC_SDS_PORT;
struct SCIC_SDS_REQUEST;
struct SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER;
/**
* @enum SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATES
*
* This is the enumeration of the ready substates for the
* SCIC_SDS_REMOTE_DEVICE.
*/
enum SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATES
{
/**
* This is the initial state for the remote device ready substate.
*/
SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_INITIAL,
/**
* This is the ready operational substate for the remote device. This is the
* normal operational state for a remote device.
*/
SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_OPERATIONAL,
/**
* This is the suspended state for the remote device. This is the state that
* the device is placed in when a RNC suspend is received by the SCU hardware.
*/
SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED,
/**
* This is the final state that the device is placed in before a change to the
* base state machine.
*/
SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_FINAL,
SCIC_SDS_SSP_REMOTE_DEVICE_READY_MAX_SUBSTATES
};
/**
* @enum SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATES
*
* This is the enumeration for the SCIC_SDS_REMOTE_DEVICE ready substates for
* the STP remote device.
*/
enum SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATES
{
/**
* This is the idle substate for the stp remote device. When there are no
* active IO for the device it is in this state.
*/
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
/**
* This is the command state for for the STP remote device. This state is
* entered when the device is processing a non-NCQ command. The device object
* will fail any new start IO requests until this command is complete.
*/
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
/**
* This is the NCQ state for the STP remote device. This state is entered
* when the device is processing an NCQ reuqest. It will remain in this state
* so long as there is one or more NCQ requests being processed.
*/
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ,
/**
* This is the NCQ error state for the STP remote device. This state is
* entered when an SDB error FIS is received by the device object while in the
* NCQ state. The device object will only accept a READ LOG command while in
* this state.
*/
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR,
#if !defined(DISABLE_ATAPI)
/**
* This is the ATAPI error state for the STP ATAPI remote device. This state is
* entered when ATAPI device sends error status FIS without data while the device
* object is in CMD state. A suspension event is expected in this state. The device
* object will resume right away.
*/
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_ATAPI_ERROR,
#endif
/**
* This is the READY substate indicates the device is waiting for the RESET task
* coming to be recovered from certain hardware specific error.
*/
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET,
SCIC_SDS_STP_REMOTE_DEVICE_READY_MAX_SUBSTATES
};
/**
* @enum SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATES
*
* This is the enumeration of the ready substates for the SMP REMOTE DEVICE.
*/
enum SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATES
{
/**
* This is the ready operational substate for the remote device. This is the
* normal operational state for a remote device.
*/
SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
/**
* This is the suspended state for the remote device. This is the state that
* the device is placed in when a RNC suspend is received by the SCU hardware.
*/
SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
SCIC_SDS_SMP_REMOTE_DEVICE_READY_MAX_SUBSTATES
};
/**
* @struct SCIC_SDS_REMOTE_DEVICE
*
* @brief This structure contains the data for an SCU implementation of
* the SCU Core device data.
*/
typedef struct SCIC_SDS_REMOTE_DEVICE
{
/**
* This field is the common base for all remote device objects.
*/
SCI_BASE_REMOTE_DEVICE_T parent;
/**
* This field is the programmed device port width. This value is written to
* the RCN data structure to tell the SCU how many open connections this
* device can have.
*/
U32 device_port_width;
/**
* This field is the programmed connection rate for this remote device. It is
* used to program the TC with the maximum allowed connection rate.
*/
SCI_SAS_LINK_RATE connection_rate;
/**
* This field contains the allowed target protocols for this remote device.
*/
SMP_DISCOVER_RESPONSE_PROTOCOLS_T target_protocols;
/**
* This field contains the device SAS address.
*/
SCI_SAS_ADDRESS_T device_address;
/**
* This filed is assinged the value of TRUE if the device is directly attached
* to the port.
*/
BOOL is_direct_attached;
#if !defined(DISABLE_ATAPI)
/**
* This filed is assinged the value of TRUE if the device is an ATAPI device.
*/
BOOL is_atapi;
#endif
/**
* This filed contains a pointer back to the port to which this device is
* assigned.
*/
struct SCIC_SDS_PORT *owning_port;
/**
* This field contains the SCU silicon remote node context specific
* information.
*/
struct SCIC_SDS_REMOTE_NODE_CONTEXT * rnc;
/**
* This field contains the stated request count for the remote device. The
* device can not reach the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED until all
* requests are complete and the rnc_posted value is FALSE.
*/
U32 started_request_count;
/**
* This field contains a pointer to the working request object. It is only
* used only for SATA requests since the unsolicited frames we get from the
* hardware have no Tag value to look up the io request object.
*/
struct SCIC_SDS_REQUEST * working_request;
/**
* This field contains the reason for the remote device going not_ready. It is
* assigned in the state handlers and used in the state transition.
*/
U32 not_ready_reason;
/**
* This field is TRUE if this remote device has an initialzied ready substate
* machine. SSP devices do not have a ready substate machine and STP devices
* have a ready substate machine.
*/
BOOL has_ready_substate_machine;
/**
* This field contains the state machine for the ready substate machine for
* this SCIC_SDS_REMOTE_DEVICE object.
*/
SCI_BASE_STATE_MACHINE_T ready_substate_machine;
/**
* This field maintains the set of state handlers for the remote device
* object. These are changed each time the remote device enters a new state.
*/
struct SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER *state_handlers;
#ifdef SCI_LOGGING
/**
* This field conatins the ready substate machine logger. The logger will
* emit a message each time the ready substate machine changes state.
*/
SCI_BASE_STATE_MACHINE_LOGGER_T ready_substate_machine_logger;
#endif
} SCIC_SDS_REMOTE_DEVICE_T;
typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_HANDLER_T)(
SCIC_SDS_REMOTE_DEVICE_T *this_device);
typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_SUSPEND_HANDLER_T)(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 suspend_type);
typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_RESUME_HANDLER_T)(
SCIC_SDS_REMOTE_DEVICE_T *this_device);
typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_FRAME_HANDLER_T)(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 frame_index);
typedef SCI_STATUS (*SCIC_SDS_REMOTE_DEVICE_EVENT_HANDLER_T)(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 event_code);
typedef void (*SCIC_SDS_REMOTE_DEVICE_READY_NOT_READY_HANDLER_T)(
SCIC_SDS_REMOTE_DEVICE_T *this_device);
/**
* @struct SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER
* @brief This structure conains the state handlers that are needed to
* process requests for the SCU remote device objects.
*/
typedef struct SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER
{
SCI_BASE_REMOTE_DEVICE_STATE_HANDLER_T parent;
SCIC_SDS_REMOTE_DEVICE_SUSPEND_HANDLER_T suspend_handler;
SCIC_SDS_REMOTE_DEVICE_RESUME_HANDLER_T resume_handler;
SCIC_SDS_REMOTE_DEVICE_EVENT_HANDLER_T event_handler;
SCIC_SDS_REMOTE_DEVICE_FRAME_HANDLER_T frame_handler;
} SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T;
extern SCI_BASE_STATE_T scic_sds_remote_device_state_table[];
extern SCI_BASE_STATE_T scic_sds_ssp_remote_device_ready_substate_table[];
extern SCI_BASE_STATE_T scic_sds_stp_remote_device_ready_substate_table[];
extern SCI_BASE_STATE_T scic_sds_smp_remote_device_ready_substate_table[];
extern SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T
scic_sds_remote_device_state_handler_table[];
extern SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T
scic_sds_ssp_remote_device_ready_substate_handler_table[];
extern SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T
scic_sds_stp_remote_device_ready_substate_handler_table[];
extern SCIC_SDS_REMOTE_DEVICE_STATE_HANDLER_T
scic_sds_smp_remote_device_ready_substate_handler_table[];
/**
* This macro incrments the request count for this device
*/
#define scic_sds_remote_device_increment_request_count(this_device) \
((this_device)->started_request_count++)
/**
* This macro decrements the request count for this device. This count
* will never decrment past 0.
*/
#define scic_sds_remote_device_decrement_request_count(this_device) \
((this_device)->started_request_count > 0 ? \
(this_device)->started_request_count-- : 0)
/**
* This is a helper macro to return the current device request count.
*/
#define scic_sds_remote_device_get_request_count(this_device) \
((this_device)->started_request_count)
/**
* This macro returns the owning port of this remote device obejct.
*/
#define scic_sds_remote_device_get_port(this_device) \
((this_device)->owning_port)
/**
* This macro returns the controller object that contains this device
* object
*/
#define scic_sds_remote_device_get_controller(this_device) \
scic_sds_port_get_controller(scic_sds_remote_device_get_port(this_device))
/**
* This macro sets the remote device state handlers pointer and is set on
* entry to each device state.
*/
#define scic_sds_remote_device_set_state_handlers(this_device, handlers) \
((this_device)->state_handlers = (handlers))
/**
* This macro returns the base sate machine object for the remote device.
*/
#define scic_sds_remote_device_get_base_state_machine(this_device) \
(&(this_device)->parent.state_machine)
/**
* This macro returns the remote device ready substate machine
*/
#define scic_sds_remote_device_get_ready_substate_machine(this_device) \
(&(this_device)->ready_substate_machine)
/**
* This macro returns the owning port of this device
*/
#define scic_sds_remote_device_get_port(this_device) \
((this_device)->owning_port)
/**
* This macro returns the remote device sequence value
*/
#define scic_sds_remote_device_get_sequence(this_device) \
( \
scic_sds_remote_device_get_controller(this_device)->\
remote_device_sequence[(this_device)->rnc->remote_node_index] \
)
/**
* This macro returns the controllers protocol engine group
*/
#define scic_sds_remote_device_get_controller_peg(this_device) \
( \
scic_sds_controller_get_protocol_engine_group( \
scic_sds_port_get_controller( \
scic_sds_remote_device_get_port(this_device) \
) \
) \
)
/**
* This macro returns the port index for the devices owning port
*/
#define scic_sds_remote_device_get_port_index(this_device) \
(scic_sds_port_get_index(scic_sds_remote_device_get_port(this_device)))
/**
* This macro returns the remote node index for this device object
*/
#define scic_sds_remote_device_get_index(this_device) \
((this_device)->rnc->remote_node_index)
/**
* This macro builds a remote device context for the SCU post request
* operation
*/
#define scic_sds_remote_device_build_command_context(device, command) \
( (command) \
| ((U32)(scic_sds_remote_device_get_controller_peg((device))) << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT)\
| ((U32)(scic_sds_remote_device_get_port_index((device))) << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) \
| (scic_sds_remote_device_get_index((device))) \
)
/**
* This macro makes the working request assingment for the remote device
* object. To clear the working request use this macro with a NULL request
* object.
*/
#define scic_sds_remote_device_set_working_request(device, request) \
((device)->working_request = (request))
// ---------------------------------------------------------------------------
U32 scic_sds_remote_device_get_min_timer_count(void);
U32 scic_sds_remote_device_get_max_timer_count(void);
SCI_STATUS scic_sds_remote_device_frame_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 frame_index
);
SCI_STATUS scic_sds_remote_device_event_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 event_code
);
SCI_STATUS scic_sds_remote_device_start_io(
struct SCIC_SDS_CONTROLLER *controller,
SCIC_SDS_REMOTE_DEVICE_T *this_device,
struct SCIC_SDS_REQUEST *io_request
);
SCI_STATUS scic_sds_remote_device_complete_io(
struct SCIC_SDS_CONTROLLER *controller,
SCIC_SDS_REMOTE_DEVICE_T *this_device,
struct SCIC_SDS_REQUEST *io_request
);
SCI_STATUS scic_sds_remote_device_resume(
SCIC_SDS_REMOTE_DEVICE_T *this_device
);
SCI_STATUS scic_sds_remote_device_suspend(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 suspend_type
);
SCI_STATUS scic_sds_remote_device_start_task(
struct SCIC_SDS_CONTROLLER *controller,
SCIC_SDS_REMOTE_DEVICE_T *this_device,
struct SCIC_SDS_REQUEST *io_request
);
void scic_sds_remote_device_post_request(
SCIC_SDS_REMOTE_DEVICE_T * this_device,
U32 request
);
#if !defined(DISABLE_ATAPI)
BOOL scic_sds_remote_device_is_atapi(
SCIC_SDS_REMOTE_DEVICE_T *this_device
);
#else // !defined(DISABLE_ATAPI)
#define scic_sds_remote_device_is_atapi(this_device) FALSE
#endif // !defined(DISABLE_ATAPI)
// ---------------------------------------------------------------------------
#ifdef SCI_LOGGING
void scic_sds_remote_device_initialize_state_logging(
SCIC_SDS_REMOTE_DEVICE_T *this_device
);
void scic_sds_remote_device_deinitialize_state_logging(
SCIC_SDS_REMOTE_DEVICE_T *this_device
);
#else // SCI_LOGGING
#define scic_sds_remote_device_initialize_state_logging(x)
#define scic_sds_remote_device_deinitialize_state_logging(x)
#endif // SCI_LOGGING
// ---------------------------------------------------------------------------
void scic_sds_remote_device_start_request(
SCIC_SDS_REMOTE_DEVICE_T * this_device,
struct SCIC_SDS_REQUEST * the_request,
SCI_STATUS status
);
void scic_sds_remote_device_continue_request(
SCIC_SDS_REMOTE_DEVICE_T * this_device
);
SCI_STATUS scic_sds_remote_device_default_start_handler(
SCI_BASE_REMOTE_DEVICE_T *this_device
);
SCI_STATUS scic_sds_remote_device_default_stop_handler(
SCI_BASE_REMOTE_DEVICE_T *this_device
);
SCI_STATUS scic_sds_remote_device_default_fail_handler(
SCI_BASE_REMOTE_DEVICE_T *this_device
);
SCI_STATUS scic_sds_remote_device_default_destruct_handler(
SCI_BASE_REMOTE_DEVICE_T *this_device
);
SCI_STATUS scic_sds_remote_device_default_reset_handler(
SCI_BASE_REMOTE_DEVICE_T *device
);
SCI_STATUS scic_sds_remote_device_default_reset_complete_handler(
SCI_BASE_REMOTE_DEVICE_T *device
);
SCI_STATUS scic_sds_remote_device_default_start_request_handler(
SCI_BASE_REMOTE_DEVICE_T *device,
SCI_BASE_REQUEST_T *request
);
SCI_STATUS scic_sds_remote_device_default_complete_request_handler(
SCI_BASE_REMOTE_DEVICE_T *device,
SCI_BASE_REQUEST_T *request
);
SCI_STATUS scic_sds_remote_device_default_continue_request_handler(
SCI_BASE_REMOTE_DEVICE_T *device,
SCI_BASE_REQUEST_T *request
);
SCI_STATUS scic_sds_remote_device_default_suspend_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 suspend_type
);
SCI_STATUS scic_sds_remote_device_default_resume_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device
);
SCI_STATUS scic_sds_remote_device_default_event_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 event_code
);
SCI_STATUS scic_sds_remote_device_default_frame_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 frame_index
);
// ---------------------------------------------------------------------------
SCI_STATUS scic_sds_remote_device_ready_state_stop_handler(
SCI_BASE_REMOTE_DEVICE_T *device
);
SCI_STATUS scic_sds_remote_device_ready_state_reset_handler(
SCI_BASE_REMOTE_DEVICE_T *device
);
SCI_STATUS scic_sds_remote_device_general_frame_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 frame_index
);
SCI_STATUS scic_sds_remote_device_general_event_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device,
U32 event_code
);
SCI_STATUS scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler(
SCIC_SDS_REMOTE_DEVICE_T *this_device
);
// ---------------------------------------------------------------------------
void scic_sds_remote_device_get_info_from_smp_discover_response(
SCIC_SDS_REMOTE_DEVICE_T * this_device,
SMP_RESPONSE_DISCOVER_T * discover_response
);
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // _SCIC_SDS_REMOTE_DEVICE_H_
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