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提交 88f3b62a 编写于 作者: D Dan Williams
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isci: move remote_device handling out of the core 

Now that the core/lldd remote_device data structures are nominally unified
merge the corresponding sources into the top-level directory.  Also move the
remote_node_context infrastructure which has no analog at the lldd level.
Signed-off-by: NDan Williams <dan.j.williams@intel.com>
上级 57f20f4e
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drivers/scsi/isci/Makefile
浏览文件 @ 88f3b62a
......@@ -10,20 +10,19 @@ obj-$(CONFIG_SCSI_ISCI) += isci.o
isci-objs := init.o phy.o request.o sata.o \
remote_device.o port.o timers.o \
host.o task.o probe_roms.o \
stp_remote_device.o \
smp_remote_device.o \
remote_node_context.o \
remote_node_table.o \
core/scic_sds_controller.o \
core/scic_sds_remote_device.o \
core/scic_sds_request.o \
core/scic_sds_stp_request.o \
core/scic_sds_stp_packet_request.o \
core/scic_sds_stp_remote_device.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_remote_node_context.o \
core/scic_sds_smp_request.o \
core/scic_sds_smp_remote_device.o \
core/scic_sds_remote_node_table.o \
core/scic_sds_unsolicited_frame_control.o \
core/sci_base_state_machine.o \
core/sci_util.o
drivers/scsi/isci/core/scic_remote_device.h 已删除 100644 → 0
浏览文件 @ 57f20f4e
/*
* 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_REMOTE_DEVICE_H_
#define _SCIC_REMOTE_DEVICE_H_
/**
* This file contains all of the interface methods that can be called by an
* SCIC user on the device object.
*
*
*/
#include "sci_status.h"
#include "intel_sas.h"
struct scic_sds_port;
struct scic_sds_remote_device;
/**
*
*
*
*/
enum scic_remote_device_not_ready_reason_code {
SCIC_REMOTE_DEVICE_NOT_READY_START_REQUESTED,
SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED,
SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED,
SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED,
SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED,
SCIC_REMOTE_DEVICE_NOT_READY_REASON_CODE_MAX
};
/**
* scic_remote_device_construct() - This method will perform the construction
* common to all remote device objects.
* @sci_port: SAS/SATA port through which this device is accessed.
* @sci_dev: remote device to construct
*
* It isn't necessary to call scic_remote_device_destruct() for device objects
* that have only called this method for construction. Once subsequent
* construction methods have been invoked (e.g.
* scic_remote_device_da_construct()), then destruction should occur. none
*/
void scic_remote_device_construct(struct scic_sds_port *sci_port,
struct scic_sds_remote_device *sci_dev);
/**
* scic_remote_device_da_construct() - This method will construct a
* SCIC_REMOTE_DEVICE object for a direct attached (da) device. The
* information (e.g. IAF, Signature FIS, etc.) necessary to build the device
* is known to the SCI Core since it is contained in the scic_phy object.
* @remote_device: This parameter specifies the remote device to be destructed.
*
* The user must have previously called scic_remote_device_construct() Remote
* device objects are a limited resource. As such, they must be protected.
* Thus calls to construct and destruct are mutually exclusive and
* non-reentrant. Indicate if the remote device was successfully constructed.
* SCI_SUCCESS Returned if the device was successfully constructed.
* SCI_FAILURE_DEVICE_EXISTS Returned if the device has already been
* constructed. If it's an additional phy for the target, then call
* scic_remote_device_da_add_phy(). SCI_FAILURE_UNSUPPORTED_PROTOCOL Returned
* if the supplied parameters necessitate creation of a remote device for which
* the protocol is not supported by the underlying controller hardware.
* SCI_FAILURE_INSUFFICIENT_RESOURCES This value is returned if the core
* controller associated with the supplied parameters is unable to support
* additional remote devices.
*/
enum sci_status scic_remote_device_da_construct(
struct scic_sds_remote_device *remote_device);
/**
* scic_remote_device_ea_construct() - This method will construct an
* SCIC_REMOTE_DEVICE object for an expander attached (ea) device from an
* SMP Discover Response.
* @remote_device: This parameter specifies the remote device to be destructed.
* @discover_response: This parameter specifies the SMP Discovery Response to
* be used in device creation.
*
* The user must have previously called scic_remote_device_construct() Remote
* device objects are a limited resource. As such, they must be protected.
* Thus calls to construct and destruct are mutually exclusive and
* non-reentrant. Indicate if the remote device was successfully constructed.
* SCI_SUCCESS Returned if the device was successfully constructed.
* SCI_FAILURE_DEVICE_EXISTS Returned if the device has already been
* constructed. If it's an additional phy for the target, then call
* scic_ea_remote_device_add_phy(). SCI_FAILURE_UNSUPPORTED_PROTOCOL Returned
* if the supplied parameters necessitate creation of a remote device for which
* the protocol is not supported by the underlying controller hardware.
* SCI_FAILURE_INSUFFICIENT_RESOURCES This value is returned if the core
* controller associated with the supplied parameters is unable to support
* additional remote devices.
*/
enum sci_status scic_remote_device_ea_construct(
struct scic_sds_remote_device *remote_device,
struct smp_response_discover *discover_response);
/**
* scic_remote_device_destruct() - This method is utilized to free up a core's
* remote device object.
* @remote_device: This parameter specifies the remote device to be destructed.
*
* Remote device objects are a limited resource. As such, they must be
* protected. Thus calls to construct and destruct are mutually exclusive and
* non-reentrant. The return value shall indicate if the device was
* successfully destructed or if some failure occurred. enum sci_status This value
* is returned if the device is successfully destructed.
* SCI_FAILURE_INVALID_REMOTE_DEVICE This value is returned if the supplied
* device isn't valid (e.g. it's already been destoryed, the handle isn't
* valid, etc.).
*/
enum sci_status scic_remote_device_destruct(
struct scic_sds_remote_device *remote_device);
/**
* scic_remote_device_start() - This method will start the supplied remote
* device. This method enables normal IO requests to flow through to the
* remote device.
* @remote_device: This parameter specifies the device to be started.
* @timeout: This parameter specifies the number of milliseconds in which the
* start operation should complete.
*
* An indication of whether the device was successfully started. SCI_SUCCESS
* This value is returned if the device was successfully started.
* SCI_FAILURE_INVALID_PHY This value is returned if the user attempts to start
* the device when there have been no phys added to it.
*/
enum sci_status scic_remote_device_start(
struct scic_sds_remote_device *remote_device,
u32 timeout);
/**
* scic_remote_device_stop() - This method will stop both transmission and
* reception of link activity for the supplied remote device. This method
* disables normal IO requests from flowing through to the remote device.
* @remote_device: This parameter specifies the device to be stopped.
* @timeout: This parameter specifies the number of milliseconds in which the
* stop operation should complete.
*
* An indication of whether the device was successfully stopped. SCI_SUCCESS
* This value is returned if the transmission and reception for the device was
* successfully stopped.
*/
enum sci_status scic_remote_device_stop(
struct scic_sds_remote_device *remote_device,
u32 timeout);
/**
* scic_remote_device_reset() - This method will reset the device making it
* ready for operation. This method must be called anytime the device is
* reset either through a SMP phy control or a port hard reset request.
* @remote_device: This parameter specifies the device to be reset.
*
* This method does not actually cause the device hardware to be reset. This
* method resets the software object so that it will be operational after a
* device hardware reset completes. An indication of whether the device reset
* was accepted. SCI_SUCCESS This value is returned if the device reset is
* started.
*/
enum sci_status scic_remote_device_reset(
struct scic_sds_remote_device *remote_device);
/**
* scic_remote_device_reset_complete() - This method informs the device object
* that the reset operation is complete and the device can resume operation
* again.
* @remote_device: This parameter specifies the device which is to be informed
* of the reset complete operation.
*
* An indication that the device is resuming operation. SCI_SUCCESS the device
* is resuming operation.
*/
enum sci_status scic_remote_device_reset_complete(
struct scic_sds_remote_device *remote_device);
/**
* scic_remote_device_get_connection_rate() - This method simply returns the
* link rate at which communications to the remote device occur.
* @remote_device: This parameter specifies the device for which to get the
* connection rate.
*
* Return the link rate at which we transfer for the supplied remote device.
*/
enum sas_linkrate scic_remote_device_get_connection_rate(
struct scic_sds_remote_device *remote_device);
/**
* scic_remote_device_get_protocols() - This method will indicate which
* protocols are supported by this remote device.
* @remote_device: This parameter specifies the device for which to return the
* protocol.
* @protocols: This parameter specifies the output values, from the remote
* device object, which indicate the protocols supported by the supplied
* remote_device.
*
* The type of protocols supported by this device. The values are returned as
* part of a bit mask in order to allow for multi-protocol support.
*/
void scic_remote_device_get_protocols(
struct scic_sds_remote_device *remote_device,
struct smp_discover_response_protocols *protocols);
#if !defined(DISABLE_ATAPI)
/**
* scic_remote_device_is_atapi() -
* @this_device: The device whose type is to be decided.
*
* This method first decide whether a device is a stp target, then decode the
* signature fis of a DA STP device to tell whether it is a standard end disk
* or an ATAPI device. bool Indicate a device is ATAPI device or not.
*/
bool scic_remote_device_is_atapi(
struct scic_sds_remote_device *device_handle);
#else /* !defined(DISABLE_ATAPI) */
#define scic_remote_device_is_atapi(device_handle) false
#endif /* !defined(DISABLE_ATAPI) */
#endif /* _SCIC_REMOTE_DEVICE_H_ */
drivers/scsi/isci/core/scic_sds_controller.c
浏览文件 @ 88f3b62a
......@@ -57,13 +57,12 @@
#include "scic_controller.h"
#include "scic_phy.h"
#include "scic_port.h"
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scu_registers.h"
#include "scic_sds_phy.h"
#include "scic_sds_port_configuration_agent.h"
#include "scic_sds_port.h"
#include "scic_sds_remote_device.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "sci_environment.h"
#include "sci_util.h"
......
drivers/scsi/isci/core/scic_sds_controller.h
浏览文件 @ 88f3b62a
......@@ -73,7 +73,7 @@
#include "scic_config_parameters.h"
#include "scic_sds_port.h"
#include "scic_sds_phy.h"
#include "scic_sds_remote_node_table.h"
#include "remote_node_table.h"
#include "scu_registers.h"
#include "scu_constants.h"
#include "scu_remote_node_context.h"
......
drivers/scsi/isci/core/scic_sds_phy.c
浏览文件 @ 88f3b62a
......@@ -61,7 +61,7 @@
#include "scic_sds_controller.h"
#include "scic_sds_phy.h"
#include "scic_sds_port.h"
#include "scic_sds_remote_node_context.h"
#include "remote_node_context.h"
#include "sci_environment.h"
#include "sci_util.h"
#include "scu_event_codes.h"
......
drivers/scsi/isci/core/scic_sds_port.c
浏览文件 @ 88f3b62a
......@@ -60,8 +60,8 @@
#include "scic_sds_controller.h"
#include "scic_sds_phy.h"
#include "scic_sds_port.h"
#include "scic_sds_remote_device.h"
#include "scic_sds_remote_node_context.h"
#include "remote_device.h"
#include "remote_node_context.h"
#include "scic_sds_request.h"
#include "sci_environment.h"
#include "scu_registers.h"
......
drivers/scsi/isci/core/scic_sds_remote_device.c 已删除 100644 → 0
浏览文件 @ 57f20f4e
/*
* 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 "intel_sas.h"
#include "scic_controller.h"
#include "scic_phy.h"
#include "scic_port.h"
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scic_sds_phy.h"
#include "scic_sds_port.h"
#include "scic_sds_remote_device.h"
#include "scic_sds_remote_node_context.h"
#include "scic_sds_request.h"
#include "sci_environment.h"
#include "sci_util.h"
#include "scu_event_codes.h"
#define SCIC_SDS_REMOTE_DEVICE_RESET_TIMEOUT (1000)
enum sci_status scic_remote_device_da_construct(
struct scic_sds_remote_device *sci_dev)
{
enum sci_status status;
u16 remote_node_index;
struct sci_sas_identify_address_frame_protocols protocols;
/*
* This information is request to determine how many remote node context
* entries will be needed to store the remote node.
*/
scic_sds_port_get_attached_protocols(sci_dev->owning_port, &protocols);
sci_dev->target_protocols.u.all = protocols.u.all;
sci_dev->is_direct_attached = true;
#if !defined(DISABLE_ATAPI)
sci_dev->is_atapi = scic_sds_remote_device_is_atapi(sci_dev);
#endif
status = scic_sds_controller_allocate_remote_node_context(
sci_dev->owning_port->owning_controller,
sci_dev,
&remote_node_index);
if (status == SCI_SUCCESS) {
sci_dev->rnc.remote_node_index = remote_node_index;
scic_sds_port_get_attached_sas_address(
sci_dev->owning_port, &sci_dev->device_address);
if (sci_dev->target_protocols.u.bits.attached_ssp_target) {
sci_dev->has_ready_substate_machine = false;
} else if (sci_dev->target_protocols.u.bits.attached_stp_target) {
sci_dev->has_ready_substate_machine = true;
sci_base_state_machine_construct(
&sci_dev->ready_substate_machine,
&sci_dev->parent,
scic_sds_stp_remote_device_ready_substate_table,
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
} else if (sci_dev->target_protocols.u.bits.attached_smp_target) {
sci_dev->has_ready_substate_machine = true;
/* add the SMP ready substate machine construction here */
sci_base_state_machine_construct(
&sci_dev->ready_substate_machine,
&sci_dev->parent,
scic_sds_smp_remote_device_ready_substate_table,
SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
}
sci_dev->connection_rate = scic_sds_port_get_max_allowed_speed(
sci_dev->owning_port);
/* / @todo Should I assign the port width by reading all of the phys on the port? */
sci_dev->device_port_width = 1;
}
return status;
}
static void scic_sds_remote_device_get_info_from_smp_discover_response(
struct scic_sds_remote_device *sci_dev,
struct smp_response_discover *discover_response)
{
/* decode discover_response to set sas_address to sci_dev. */
sci_dev->device_address.high =
discover_response->attached_sas_address.high;
sci_dev->device_address.low =
discover_response->attached_sas_address.low;
sci_dev->target_protocols.u.all = discover_response->protocols.u.all;
}
enum sci_status scic_remote_device_ea_construct(
struct scic_sds_remote_device *sci_dev,
struct smp_response_discover *discover_response)
{
enum sci_status status;
struct scic_sds_controller *scic;
scic = scic_sds_port_get_controller(sci_dev->owning_port);
scic_sds_remote_device_get_info_from_smp_discover_response(
sci_dev, discover_response);
status = scic_sds_controller_allocate_remote_node_context(
scic, sci_dev, &sci_dev->rnc.remote_node_index);
if (status == SCI_SUCCESS) {
if (sci_dev->target_protocols.u.bits.attached_ssp_target) {
sci_dev->has_ready_substate_machine = false;
} else if (sci_dev->target_protocols.u.bits.attached_smp_target) {
sci_dev->has_ready_substate_machine = true;
/* add the SMP ready substate machine construction here */
sci_base_state_machine_construct(
&sci_dev->ready_substate_machine,
&sci_dev->parent,
scic_sds_smp_remote_device_ready_substate_table,
SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
} else if (sci_dev->target_protocols.u.bits.attached_stp_target) {
sci_dev->has_ready_substate_machine = true;
sci_base_state_machine_construct(
&sci_dev->ready_substate_machine,
&sci_dev->parent,
scic_sds_stp_remote_device_ready_substate_table,
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
}
/*
* For SAS-2 the physical link rate is actually a logical link
* rate that incorporates multiplexing. The SCU doesn't
* incorporate multiplexing and for the purposes of the
* connection the logical link rate is that same as the
* physical. Furthermore, the SAS-2 and SAS-1.1 fields overlay
* one another, so this code works for both situations. */
sci_dev->connection_rate = min_t(u16,
scic_sds_port_get_max_allowed_speed(sci_dev->owning_port),
discover_response->u2.sas1_1.negotiated_physical_link_rate
);
/* / @todo Should I assign the port width by reading all of the phys on the port? */
sci_dev->device_port_width = 1;
}
return status;
}
enum sci_status scic_remote_device_destruct(
struct scic_sds_remote_device *sci_dev)
{
return sci_dev->state_handlers->destruct_handler(sci_dev);
}
enum sci_status scic_remote_device_start(
struct scic_sds_remote_device *sci_dev,
u32 timeout)
{
return sci_dev->state_handlers->start_handler(sci_dev);
}
enum sci_status scic_remote_device_stop(
struct scic_sds_remote_device *sci_dev,
u32 timeout)
{
return sci_dev->state_handlers->stop_handler(sci_dev);
}
enum sci_status scic_remote_device_reset(
struct scic_sds_remote_device *sci_dev)
{
return sci_dev->state_handlers->reset_handler(sci_dev);
}
enum sci_status scic_remote_device_reset_complete(
struct scic_sds_remote_device *sci_dev)
{
return sci_dev->state_handlers->reset_complete_handler(sci_dev);
}
enum sas_linkrate scic_remote_device_get_connection_rate(
struct scic_sds_remote_device *sci_dev)
{
return sci_dev->connection_rate;
}
void scic_remote_device_get_protocols(
struct scic_sds_remote_device *sci_dev,
struct smp_discover_response_protocols *pr)
{
pr->u.all = sci_dev->target_protocols.u.all;
}
#if !defined(DISABLE_ATAPI)
bool scic_remote_device_is_atapi(struct scic_sds_remote_device *sci_dev)
{
return sci_dev->is_atapi;
}
#endif
/*
* *****************************************************************************
* * SCU DRIVER STANDARD (SDS) REMOTE DEVICE IMPLEMENTATIONS
* ***************************************************************************** */
/**
*
*
* Remote device timer requirements
*/
#define SCIC_SDS_REMOTE_DEVICE_MINIMUM_TIMER_COUNT (0)
#define SCIC_SDS_REMOTE_DEVICE_MAXIMUM_TIMER_COUNT (SCI_MAX_REMOTE_DEVICES)
/**
*
* @sci_dev: The remote device for which the suspend is being requested.
*
* This method invokes the remote device suspend state handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_suspend(
struct scic_sds_remote_device *sci_dev,
u32 suspend_type)
{
return sci_dev->state_handlers->suspend_handler(sci_dev, suspend_type);
}
/**
*
* @sci_dev: The remote device for which the resume is being requested.
*
* This method invokes the remote device resume state handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_resume(
struct scic_sds_remote_device *sci_dev)
{
return sci_dev->state_handlers->resume_handler(sci_dev);
}
/**
*
* @sci_dev: The remote device for which the event handling is being
* requested.
* @frame_index: This is the frame index that is being processed.
*
* This method invokes the frame handler for the remote device state machine
* enum sci_status
*/
enum sci_status scic_sds_remote_device_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index)
{
return sci_dev->state_handlers->frame_handler(sci_dev, frame_index);
}
/**
*
* @sci_dev: The remote device for which the event handling is being
* requested.
* @event_code: This is the event code that is to be processed.
*
* This method invokes the remote device event handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code)
{
return sci_dev->state_handlers->event_handler(sci_dev, event_code);
}
/**
*
* @controller: The controller that is starting the io request.
* @sci_dev: The remote device for which the start io handling is being
* requested.
* @io_request: The io request that is being started.
*
* This method invokes the remote device start io handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_start_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request)
{
return sci_dev->state_handlers->start_io_handler(
sci_dev, io_request);
}
/**
*
* @controller: The controller that is completing the io request.
* @sci_dev: The remote device for which the complete io handling is being
* requested.
* @io_request: The io request that is being completed.
*
* This method invokes the remote device complete io handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_complete_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request)
{
return sci_dev->state_handlers->complete_io_handler(
sci_dev, io_request);
}
/**
*
* @controller: The controller that is starting the task request.
* @sci_dev: The remote device for which the start task handling is being
* requested.
* @io_request: The task request that is being started.
*
* This method invokes the remote device start task handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_start_task(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request)
{
return sci_dev->state_handlers->start_task_handler(
sci_dev, io_request);
}
/**
*
* @controller: The controller that is completing the task request.
* @sci_dev: The remote device for which the complete task handling is
* being requested.
* @io_request: The task request that is being completed.
*
* This method invokes the remote device complete task handler. enum sci_status
*/
/**
*
* @sci_dev:
* @request:
*
* This method takes the request and bulids an appropriate SCU context for the
* request and then requests the controller to post the request. none
*/
void scic_sds_remote_device_post_request(
struct scic_sds_remote_device *sci_dev,
u32 request)
{
u32 context;
context = scic_sds_remote_device_build_command_context(sci_dev, request);
scic_sds_controller_post_request(
scic_sds_remote_device_get_controller(sci_dev),
context
);
}
#if !defined(DISABLE_ATAPI)
/**
*
* @sci_dev: The device to be checked.
*
* This method check the signature fis of a stp device to decide whether a
* device is atapi or not. true if a device is atapi device. False if a device
* is not atapi.
*/
bool scic_sds_remote_device_is_atapi(
struct scic_sds_remote_device *sci_dev)
{
if (!sci_dev->target_protocols.u.bits.attached_stp_target)
return false;
else if (sci_dev->is_direct_attached) {
struct scic_sds_phy *phy;
struct scic_sata_phy_properties properties;
struct sata_fis_reg_d2h *signature_fis;
phy = scic_sds_port_get_a_connected_phy(sci_dev->owning_port);
scic_sata_phy_get_properties(phy, &properties);
/* decode the signature fis. */
signature_fis = &(properties.signature_fis);
if ((signature_fis->sector_count == 0x01)
&& (signature_fis->lba_low == 0x01)
&& (signature_fis->lba_mid == 0x14)
&& (signature_fis->lba_high == 0xEB)
&& ((signature_fis->device & 0x5F) == 0x00)
) {
/* An ATA device supporting the PACKET command set. */
return true;
} else
return false;
} else {
/* Expander supported ATAPI device is not currently supported. */
return false;
}
}
#endif
/**
*
* @user_parameter: This is cast to a remote device object.
*
* This method is called once the remote node context is ready to be freed.
* The remote device can now report that its stop operation is complete. none
*/
static void scic_sds_cb_remote_device_rnc_destruct_complete(
void *user_parameter)
{
struct scic_sds_remote_device *sci_dev;
sci_dev = (struct scic_sds_remote_device *)user_parameter;
BUG_ON(sci_dev->started_request_count != 0);
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
}
/**
*
* @user_parameter: This is cast to a remote device object.
*
* This method is called once the remote node context has transisitioned to a
* ready state. This is the indication that the remote device object can also
* transition to ready. none
*/
static void scic_sds_remote_device_resume_complete_handler(
void *user_parameter)
{
struct scic_sds_remote_device *sci_dev;
sci_dev = (struct scic_sds_remote_device *)user_parameter;
if (
sci_base_state_machine_get_state(&sci_dev->state_machine)
!= SCI_BASE_REMOTE_DEVICE_STATE_READY
) {
sci_base_state_machine_change_state(
&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_READY
);
}
}
/**
*
* @device: This parameter specifies the device for which the request is being
* started.
* @request: This parameter specifies the request being started.
* @status: This parameter specifies the current start operation status.
*
* This method will perform the STP request start processing common to IO
* requests and task requests of all types. none
*/
void scic_sds_remote_device_start_request(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *sci_req,
enum sci_status status)
{
/* We still have a fault in starting the io complete it on the port */
if (status == SCI_SUCCESS)
scic_sds_remote_device_increment_request_count(sci_dev);
else{
sci_dev->owning_port->state_handlers->complete_io_handler(
sci_dev->owning_port, sci_dev, sci_req
);
}
}
/**
*
* @request: This parameter specifies the request being continued.
*
* This method will continue to post tc for a STP request. This method usually
* serves as a callback when RNC gets resumed during a task management
* sequence. none
*/
void scic_sds_remote_device_continue_request(void *dev)
{
struct scic_sds_remote_device *sci_dev = dev;
/* we need to check if this request is still valid to continue. */
if (sci_dev->working_request)
scic_controller_continue_io(sci_dev->working_request);
}
/**
*
* @user_parameter: This is cast to a remote device object.
*
* This method is called once the remote node context has reached a suspended
* state. The remote device can now report that its suspend operation is
* complete. none
*/
/**
* This method will terminate all of the IO requests in the controllers IO
* request table that were targeted for this device.
* @sci_dev: This parameter specifies the remote device for which to
* attempt to terminate all requests.
*
* This method returns an indication as to whether all requests were
* successfully terminated. If a single request fails to be terminated, then
* this method will return the failure.
*/
static enum sci_status scic_sds_remote_device_terminate_requests(
struct scic_sds_remote_device *sci_dev)
{
enum sci_status status = SCI_SUCCESS;
enum sci_status terminate_status = SCI_SUCCESS;
struct scic_sds_request *sci_req;
u32 index;
u32 request_count = sci_dev->started_request_count;
for (index = 0;
(index < SCI_MAX_IO_REQUESTS) && (request_count > 0);
index++) {
sci_req = sci_dev->owning_port->owning_controller->io_request_table[index];
if ((sci_req != NULL) && (sci_req->target_device == sci_dev)) {
terminate_status = scic_controller_terminate_request(
sci_dev->owning_port->owning_controller,
sci_dev,
sci_req
);
if (terminate_status != SCI_SUCCESS)
status = terminate_status;
request_count--;
}
}
return status;
}
static enum sci_status
default_device_handler(struct scic_sds_remote_device *sci_dev,
const char *func)
{
dev_warn(scirdev_to_dev(sci_dev),
"%s: in wrong state: %d\n", func,
sci_base_state_machine_get_state(&sci_dev->state_machine));
return SCI_FAILURE_INVALID_STATE;
}
enum sci_status scic_sds_remote_device_default_start_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
static enum sci_status scic_sds_remote_device_default_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_fail_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_destruct_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_reset_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_reset_complete_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_suspend_handler(
struct scic_sds_remote_device *sci_dev, u32 suspend_type)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_resume_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
/**
*
* @device: The struct scic_sds_remote_device which is then cast into a
* struct scic_sds_remote_device.
* @event_code: The event code that the struct scic_sds_controller wants the device
* object to process.
*
* This method is the default event handler. It will call the RNC state
* machine handler for any RNC events otherwise it will log a warning and
* returns a failure. enum sci_status SCI_FAILURE_INVALID_STATE
*/
static enum sci_status scic_sds_remote_device_core_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code,
bool is_ready_state)
{
enum sci_status status;
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TYPE_RNC_OPS_MISC:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
status = scic_sds_remote_node_context_event_handler(&sci_dev->rnc, event_code);
break;
case SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT:
if (scu_get_event_code(event_code) == SCU_EVENT_IT_NEXUS_TIMEOUT) {
status = SCI_SUCCESS;
/* Suspend the associated RNC */
scic_sds_remote_node_context_suspend(&sci_dev->rnc,
SCI_SOFTWARE_SUSPENSION,
NULL, NULL);
dev_dbg(scirdev_to_dev(sci_dev),
"%s: device: %p event code: %x: %s\n",
__func__, sci_dev, event_code,
(is_ready_state)
? "I_T_Nexus_Timeout event"
: "I_T_Nexus_Timeout event in wrong state");
break;
}
/* Else, fall through and treat as unhandled... */
default:
dev_dbg(scirdev_to_dev(sci_dev),
"%s: device: %p event code: %x: %s\n",
__func__, sci_dev, event_code,
(is_ready_state)
? "unexpected event"
: "unexpected event in wrong state");
status = SCI_FAILURE_INVALID_STATE;
break;
}
return status;
}
/**
*
* @device: The struct scic_sds_remote_device which is then cast into a
* struct scic_sds_remote_device.
* @event_code: The event code that the struct scic_sds_controller wants the device
* object to process.
*
* This method is the default event handler. It will call the RNC state
* machine handler for any RNC events otherwise it will log a warning and
* returns a failure. enum sci_status SCI_FAILURE_INVALID_STATE
*/
static enum sci_status scic_sds_remote_device_default_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code)
{
return scic_sds_remote_device_core_event_handler(sci_dev,
event_code,
false);
}
/**
*
* @device: The struct scic_sds_remote_device which is then cast into a
* struct scic_sds_remote_device.
* @frame_index: The frame index for which the struct scic_sds_controller wants this
* device object to process.
*
* This method is the default unsolicited frame handler. It logs a warning,
* releases the frame and returns a failure. enum sci_status
* SCI_FAILURE_INVALID_STATE
*/
enum sci_status scic_sds_remote_device_default_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index)
{
dev_warn(scirdev_to_dev(sci_dev),
"%s: SCIC Remote Device requested to handle frame %x "
"while in wrong state %d\n",
__func__,
frame_index,
sci_base_state_machine_get_state(
&sci_dev->state_machine));
/* Return the frame back to the controller */
scic_sds_controller_release_frame(
scic_sds_remote_device_get_controller(sci_dev), frame_index
);
return SCI_FAILURE_INVALID_STATE;
}
enum sci_status scic_sds_remote_device_default_start_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_continue_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
return default_device_handler(sci_dev, __func__);
}
/**
*
* @device: The struct scic_sds_remote_device which is then cast into a
* struct scic_sds_remote_device.
* @frame_index: The frame index for which the struct scic_sds_controller wants this
* device object to process.
*
* This method is a general ssp frame handler. In most cases the device object
* needs to route the unsolicited frame processing to the io request object.
* This method decodes the tag for the io request object and routes the
* unsolicited frame to that object. enum sci_status SCI_FAILURE_INVALID_STATE
*/
enum sci_status scic_sds_remote_device_general_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index)
{
enum sci_status result;
struct sci_ssp_frame_header *frame_header;
struct scic_sds_request *io_request;
result = scic_sds_unsolicited_frame_control_get_header(
&(scic_sds_remote_device_get_controller(sci_dev)->uf_control),
frame_index,
(void **)&frame_header
);
if (SCI_SUCCESS == result) {
io_request = scic_sds_controller_get_io_request_from_tag(
scic_sds_remote_device_get_controller(sci_dev), frame_header->tag);
if ((io_request == NULL)
|| (io_request->target_device != sci_dev)) {
/*
* We could not map this tag to a valid IO request
* Just toss the frame and continue */
scic_sds_controller_release_frame(
scic_sds_remote_device_get_controller(sci_dev), frame_index
);
} else {
/* The IO request is now in charge of releasing the frame */
result = io_request->state_handlers->frame_handler(
io_request, frame_index);
}
}
return result;
}
/**
*
* @[in]: sci_dev This is the device object that is receiving the event.
* @[in]: event_code The event code to process.
*
* This is a common method for handling events reported to the remote device
* from the controller object. enum sci_status
*/
enum sci_status scic_sds_remote_device_general_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code)
{
return scic_sds_remote_device_core_event_handler(sci_dev,
event_code,
true);
}
/*
* *****************************************************************************
* * STOPPED STATE HANDLERS
* ***************************************************************************** */
/**
*
* @device:
*
* This method takes the struct scic_sds_remote_device from a stopped state and
* attempts to start it. The RNC buffer for the device is constructed and the
* device state machine is transitioned to the
* SCIC_BASE_REMOTE_DEVICE_STATE_STARTING. enum sci_status SCI_SUCCESS if there is
* an RNC buffer available to construct the remote device.
* SCI_FAILURE_INSUFFICIENT_RESOURCES if there is no RNC buffer available in
* which to construct the remote device.
*/
static enum sci_status scic_sds_remote_device_stopped_state_start_handler(
struct scic_sds_remote_device *sci_dev)
{
enum sci_status status;
status = scic_sds_remote_node_context_resume(&sci_dev->rnc,
scic_sds_remote_device_resume_complete_handler, sci_dev);
if (status == SCI_SUCCESS)
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STARTING);
return status;
}
static enum sci_status scic_sds_remote_device_stopped_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
return SCI_SUCCESS;
}
/**
*
* @sci_dev: The struct scic_sds_remote_device which is cast into a
* struct scic_sds_remote_device.
*
* This method will destruct a struct scic_sds_remote_device that is in a stopped
* state. This is the only state from which a destruct request will succeed.
* The RNi for this struct scic_sds_remote_device is returned to the free pool and the
* device object transitions to the SCI_BASE_REMOTE_DEVICE_STATE_FINAL.
* enum sci_status SCI_SUCCESS
*/
static enum sci_status scic_sds_remote_device_stopped_state_destruct_handler(
struct scic_sds_remote_device *sci_dev)
{
struct scic_sds_controller *scic;
scic = scic_sds_remote_device_get_controller(sci_dev);
scic_sds_controller_free_remote_node_context(scic, sci_dev,
sci_dev->rnc.remote_node_index);
sci_dev->rnc.remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_FINAL);
return SCI_SUCCESS;
}
/*
* *****************************************************************************
* * STARTING STATE HANDLERS
* ***************************************************************************** */
static enum sci_status scic_sds_remote_device_starting_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
/*
* This device has not yet started so there had better be no IO requests
*/
BUG_ON(sci_dev->started_request_count != 0);
/*
* Destroy the remote node context
*/
scic_sds_remote_node_context_destruct(&sci_dev->rnc,
scic_sds_cb_remote_device_rnc_destruct_complete, sci_dev);
/*
* Transition to the stopping state and wait for the remote node to
* complete being posted and invalidated.
*/
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING);
return SCI_SUCCESS;
}
enum sci_status scic_sds_remote_device_ready_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
enum sci_status status = SCI_SUCCESS;
/* Request the parent state machine to transition to the stopping state */
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING);
if (sci_dev->started_request_count == 0) {
scic_sds_remote_node_context_destruct(&sci_dev->rnc,
scic_sds_cb_remote_device_rnc_destruct_complete,
sci_dev);
} else
status = scic_sds_remote_device_terminate_requests(sci_dev);
return status;
}
/**
*
* @device: The struct scic_sds_remote_device object which is cast to a
* struct scic_sds_remote_device object.
*
* This is the ready state device reset handler enum sci_status
*/
enum sci_status scic_sds_remote_device_ready_state_reset_handler(
struct scic_sds_remote_device *sci_dev)
{
/* Request the parent state machine to transition to the stopping state */
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_RESETTING);
return SCI_SUCCESS;
}
/*
* This method will attempt to start a task request for this device object. The
* remote device object will issue the start request for the task and if
* successful it will start the request for the port object then increment its
* own requet count. enum sci_status SCI_SUCCESS if the task request is started for
* this device object. SCI_FAILURE_INSUFFICIENT_RESOURCES if the io request
* object could not get the resources to start.
*/
static enum sci_status scic_sds_remote_device_ready_state_start_task_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status result;
/* See if the port is in a state where we can start the IO request */
result = scic_sds_port_start_io(
scic_sds_remote_device_get_port(sci_dev), sci_dev, request);
if (result == SCI_SUCCESS) {
result = scic_sds_remote_node_context_start_task(&sci_dev->rnc,
request);
if (result == SCI_SUCCESS)
result = scic_sds_request_start(request);
scic_sds_remote_device_start_request(sci_dev, request, result);
}
return result;
}
/*
* This method will attempt to start an io request for this device object. The
* remote device object will issue the start request for the io and if
* successful it will start the request for the port object then increment its
* own requet count. enum sci_status SCI_SUCCESS if the io request is started for
* this device object. SCI_FAILURE_INSUFFICIENT_RESOURCES if the io request
* object could not get the resources to start.
*/
static enum sci_status scic_sds_remote_device_ready_state_start_io_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status result;
/* See if the port is in a state where we can start the IO request */
result = scic_sds_port_start_io(
scic_sds_remote_device_get_port(sci_dev), sci_dev, request);
if (result == SCI_SUCCESS) {
result = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request);
if (result == SCI_SUCCESS)
result = scic_sds_request_start(request);
scic_sds_remote_device_start_request(sci_dev, request, result);
}
return result;
}
/*
* This method will complete the request for the remote device object. The
* method will call the completion handler for the request object and if
* successful it will complete the request on the port object then decrement
* its own started_request_count. enum sci_status
*/
static enum sci_status scic_sds_remote_device_ready_state_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status result;
result = scic_sds_request_complete(request);
if (result != SCI_SUCCESS)
return result;
/* See if the port is in a state
* where we can start the IO request */
result = scic_sds_port_complete_io(
scic_sds_remote_device_get_port(sci_dev),
sci_dev, request);
if (result == SCI_SUCCESS)
scic_sds_remote_device_decrement_request_count(sci_dev);
return result;
}
/*
* *****************************************************************************
* * STOPPING STATE HANDLERS
* ***************************************************************************** */
/**
*
* @sci_dev: The struct scic_sds_remote_device which is cast into a
* struct scic_sds_remote_device.
*
* This method will stop a struct scic_sds_remote_device that is already in the
* SCI_BASE_REMOTE_DEVICE_STATE_STOPPING state. This is not considered an error
* since we allow a stop request on a device that is alreay stopping or
* stopped. enum sci_status SCI_SUCCESS
*/
static enum sci_status scic_sds_remote_device_stopping_state_stop_handler(
struct scic_sds_remote_device *device)
{
/*
* All requests should have been terminated, but if there is an
* attempt to stop a device already in the stopping state, then
* try again to terminate. */
return scic_sds_remote_device_terminate_requests(device);
}
/**
*
* @device: The device object for which the request is completing.
* @request: The task request that is being completed.
*
* This method completes requests for this struct scic_sds_remote_device while it is
* in the SCI_BASE_REMOTE_DEVICE_STATE_STOPPING state. This method calls the
* complete method for the request object and if that is successful the port
* object is called to complete the task request. Then the device object itself
* completes the task request. If struct scic_sds_remote_device started_request_count
* goes to 0 and the invalidate RNC request has completed the device object can
* transition to the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED. enum sci_status
*/
static enum sci_status scic_sds_remote_device_stopping_state_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status status = SCI_SUCCESS;
status = scic_sds_request_complete(request);
if (status != SCI_SUCCESS)
return status;
status = scic_sds_port_complete_io(scic_sds_remote_device_get_port(sci_dev),
sci_dev, request);
if (status != SCI_SUCCESS)
return status;
scic_sds_remote_device_decrement_request_count(sci_dev);
if (scic_sds_remote_device_get_request_count(sci_dev) == 0)
scic_sds_remote_node_context_destruct(&sci_dev->rnc,
scic_sds_cb_remote_device_rnc_destruct_complete,
sci_dev);
return SCI_SUCCESS;
}
/**
*
* @device: The struct scic_sds_remote_device which is to be cast into a
* struct scic_sds_remote_device object.
*
* This method will complete the reset operation when the device is in the
* resetting state. enum sci_status
*/
static enum sci_status scic_sds_remote_device_resetting_state_reset_complete_handler(
struct scic_sds_remote_device *sci_dev)
{
sci_base_state_machine_change_state(
&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_READY
);
return SCI_SUCCESS;
}
/**
*
* @device: The struct scic_sds_remote_device which is to be cast into a
* struct scic_sds_remote_device object.
*
* This method will stop the remote device while in the resetting state.
* enum sci_status
*/
static enum sci_status scic_sds_remote_device_resetting_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
sci_base_state_machine_change_state(
&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING
);
return SCI_SUCCESS;
}
/*
* This method completes requests for this struct scic_sds_remote_device while it is
* in the SCI_BASE_REMOTE_DEVICE_STATE_RESETTING state. This method calls the
* complete method for the request object and if that is successful the port
* object is called to complete the task request. Then the device object itself
* completes the task request. enum sci_status
*/
static enum sci_status scic_sds_remote_device_resetting_state_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status status = SCI_SUCCESS;
status = scic_sds_request_complete(request);
if (status == SCI_SUCCESS) {
status = scic_sds_port_complete_io(
scic_sds_remote_device_get_port(sci_dev),
sci_dev, request);
if (status == SCI_SUCCESS) {
scic_sds_remote_device_decrement_request_count(sci_dev);
}
}
return status;
}
/*
* *****************************************************************************
* * FAILED STATE HANDLERS
* ***************************************************************************** */
/**
*
* @device: The struct scic_sds_remote_device which is to be cast into a
* struct scic_sds_remote_device object.
*
* This method handles the remove request for a failed struct scic_sds_remote_device
* object. The method will transition the device object to the
* SCIC_BASE_REMOTE_DEVICE_STATE_STOPPING. enum sci_status SCI_SUCCESS
*/
/* --------------------------------------------------------------------------- */
static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[] = {
[SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = {
.start_handler = scic_sds_remote_device_stopped_state_start_handler,
.stop_handler = scic_sds_remote_device_stopped_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_stopped_state_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_starting_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_general_event_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_READY] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_ready_state_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_ready_state_start_io_handler,
.complete_io_handler = scic_sds_remote_device_ready_state_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_ready_state_start_task_handler,
.complete_task_handler = scic_sds_remote_device_ready_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_general_event_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler,
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_stopping_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_stopping_state_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_stopping_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_general_event_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_resetting_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_resetting_state_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_resetting_state_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_resetting_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
}
};
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the enter method for the SCI_BASE_REMOTE_DEVICE_STATE_INITIAL it
* immediatly transitions the remote device object to the stopped state. none
*/
static void scic_sds_remote_device_initial_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
sci_dev = container_of(object, typeof(*sci_dev), parent);
SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_INITIAL);
/* Initial state is a transitional state to the stopped state */
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the enter function for the SCI_BASE_REMOTE_DEVICE_STATE_INITIAL it
* sets the stopped state handlers and if this state is entered from the
* SCI_BASE_REMOTE_DEVICE_STATE_STOPPING then the SCI User is informed that the
* device stop is complete. none
*/
static void scic_sds_remote_device_stopped_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev;
struct scic_sds_controller *scic;
struct isci_remote_device *idev;
struct isci_host *ihost;
u32 prev_state;
sci_dev = container_of(object, typeof(*sci_dev), parent);
scic = scic_sds_remote_device_get_controller(sci_dev);
ihost = sci_object_get_association(scic);
idev = sci_object_get_association(sci_dev);
SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
/* If we are entering from the stopping state let the SCI User know that
* the stop operation has completed.
*/
prev_state = sci_dev->state_machine.previous_state_id;
if (prev_state == SCI_BASE_REMOTE_DEVICE_STATE_STOPPING)
isci_remote_device_stop_complete(ihost, idev, SCI_SUCCESS);
scic_sds_controller_remote_device_stopped(scic, sci_dev);
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the enter function for the SCI_BASE_REMOTE_DEVICE_STATE_STARTING it
* sets the starting state handlers, sets the device not ready, and posts the
* remote node context to the hardware. none
*/
static void scic_sds_remote_device_starting_state_enter(struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = container_of(object, typeof(*sci_dev),
parent);
struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
struct isci_host *ihost = sci_object_get_association(scic);
struct isci_remote_device *idev = sci_object_get_association(sci_dev);
SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_STARTING);
isci_remote_device_not_ready(ihost, idev,
SCIC_REMOTE_DEVICE_NOT_READY_START_REQUESTED);
}
static void scic_sds_remote_device_starting_state_exit(struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = container_of(object, typeof(*sci_dev),
parent);
struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
struct isci_host *ihost = sci_object_get_association(scic);
struct isci_remote_device *idev = sci_object_get_association(sci_dev);
/*
* @todo Check the device object for the proper return code for this
* callback
*/
isci_remote_device_start_complete(ihost, idev, SCI_SUCCESS);
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the enter function for the SCI_BASE_REMOTE_DEVICE_STATE_READY it sets
* the ready state handlers, and starts the ready substate machine. none
*/
static void scic_sds_remote_device_ready_state_enter(struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = container_of(object, typeof(*sci_dev),
parent);
struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
struct isci_host *ihost = sci_object_get_association(scic);
struct isci_remote_device *idev = sci_object_get_association(sci_dev);
SET_STATE_HANDLER(sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_READY);
scic->remote_device_sequence[sci_dev->rnc.remote_node_index]++;
if (sci_dev->has_ready_substate_machine)
sci_base_state_machine_start(&sci_dev->ready_substate_machine);
else
isci_remote_device_ready(ihost, idev);
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the exit function for the SCI_BASE_REMOTE_DEVICE_STATE_READY it does
* nothing. none
*/
static void scic_sds_remote_device_ready_state_exit(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = container_of(object, typeof(*sci_dev),
parent);
if (sci_dev->has_ready_substate_machine)
sci_base_state_machine_stop(&sci_dev->ready_substate_machine);
else {
struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
struct isci_host *ihost = sci_object_get_association(scic);
struct isci_remote_device *idev = sci_object_get_association(sci_dev);
isci_remote_device_not_ready(ihost, idev,
SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED);
}
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the enter method for the SCI_BASE_REMOTE_DEVICE_STATE_STOPPING it
* sets the stopping state handlers and posts an RNC invalidate request to the
* SCU hardware. none
*/
static void scic_sds_remote_device_stopping_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
SET_STATE_HANDLER(
sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING
);
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the enter method for the SCI_BASE_REMOTE_DEVICE_STATE_FAILED it sets
* the stopping state handlers. none
*/
static void scic_sds_remote_device_failed_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
SET_STATE_HANDLER(
sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_FAILED
);
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the enter method for the SCI_BASE_REMOTE_DEVICE_STATE_RESETTING it
* sets the resetting state handlers. none
*/
static void scic_sds_remote_device_resetting_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
SET_STATE_HANDLER(
sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_RESETTING
);
scic_sds_remote_node_context_suspend(
&sci_dev->rnc, SCI_SOFTWARE_SUSPENSION, NULL, NULL);
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the exit method for the SCI_BASE_REMOTE_DEVICE_STATE_RESETTING it
* does nothing. none
*/
static void scic_sds_remote_device_resetting_state_exit(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
scic_sds_remote_node_context_resume(&sci_dev->rnc, NULL, NULL);
}
/**
*
* @object: This is the struct sci_base_object that is cast into a
* struct scic_sds_remote_device.
*
* This is the enter method for the SCI_BASE_REMOTE_DEVICE_STATE_FINAL it sets
* the final state handlers. none
*/
static void scic_sds_remote_device_final_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
SET_STATE_HANDLER(
sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_FINAL
);
}
/* --------------------------------------------------------------------------- */
static const struct sci_base_state scic_sds_remote_device_state_table[] = {
[SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = {
.enter_state = scic_sds_remote_device_initial_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = {
.enter_state = scic_sds_remote_device_stopped_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = {
.enter_state = scic_sds_remote_device_starting_state_enter,
.exit_state = scic_sds_remote_device_starting_state_exit
},
[SCI_BASE_REMOTE_DEVICE_STATE_READY] = {
.enter_state = scic_sds_remote_device_ready_state_enter,
.exit_state = scic_sds_remote_device_ready_state_exit
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = {
.enter_state = scic_sds_remote_device_stopping_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = {
.enter_state = scic_sds_remote_device_failed_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = {
.enter_state = scic_sds_remote_device_resetting_state_enter,
.exit_state = scic_sds_remote_device_resetting_state_exit
},
[SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = {
.enter_state = scic_sds_remote_device_final_state_enter,
},
};
void scic_remote_device_construct(struct scic_sds_port *sci_port,
struct scic_sds_remote_device *sci_dev)
{
sci_dev->owning_port = sci_port;
sci_dev->started_request_count = 0;
sci_dev->parent.private = NULL;
sci_base_state_machine_construct(
&sci_dev->state_machine,
&sci_dev->parent,
scic_sds_remote_device_state_table,
SCI_BASE_REMOTE_DEVICE_STATE_INITIAL
);
sci_base_state_machine_start(
&sci_dev->state_machine
);
scic_sds_remote_node_context_construct(&sci_dev->rnc,
SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX);
sci_object_set_association(&sci_dev->rnc, sci_dev);
}
drivers/scsi/isci/core/scic_sds_remote_device.h 已删除 100644 → 0
浏览文件 @ 57f20f4e
/*
* 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_REMOTE_DEVICE_H_
#define _SCIC_SDS_REMOTE_DEVICE_H_
#include "intel_sas.h"
#include "scu_remote_node_context.h"
#include "scic_sds_remote_node_context.h"
#include <scsi/libsas.h>
/**
* enum scic_sds_remote_device_states - This enumeration depicts all the states
* for the common remote device state machine.
*
*
*/
enum scic_sds_remote_device_states {
/**
* Simply the initial state for the base remote device state machine.
*/
SCI_BASE_REMOTE_DEVICE_STATE_INITIAL,
/**
* This state indicates that the remote device has successfully been
* stopped. In this state no new IO operations are permitted.
* This state is entered from the INITIAL state.
* This state is entered from the STOPPING state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_STOPPED,
/**
* This state indicates the the remote device is in the process of
* becoming ready (i.e. starting). In this state no new IO operations
* are permitted.
* This state is entered from the STOPPED state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_STARTING,
/**
* This state indicates the remote device is now ready. Thus, the user
* is able to perform IO operations on the remote device.
* This state is entered from the STARTING state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_READY,
/**
* This state indicates that the remote device is in the process of
* stopping. In this state no new IO operations are permitted, but
* existing IO operations are allowed to complete.
* This state is entered from the READY state.
* This state is entered from the FAILED state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING,
/**
* This state indicates that the remote device has failed.
* In this state no new IO operations are permitted.
* This state is entered from the INITIALIZING state.
* This state is entered from the READY state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_FAILED,
/**
* This state indicates the device is being reset.
* In this state no new IO operations are permitted.
* This state is entered from the READY state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_RESETTING,
/**
* Simply the final state for the base remote device state machine.
*/
SCI_BASE_REMOTE_DEVICE_STATE_FINAL,
};
/**
* enum scic_sds_ssp_remote_device_ready_substates -
*
* This is the enumeration of the ready substates for the
* struct 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 struct 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 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,
};
/**
* 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,
};
/**
* struct scic_sds_remote_device - This structure contains the data for an SCU
* implementation of the SCU Core device data.
*
*
*/
struct scic_sds_remote_device {
/**
* The field specifies that the parent object for the base remote
* device is the base object itself.
*/
struct sci_base_object parent;
/**
* This field contains the information for the base remote device state
* machine.
*/
struct sci_base_state_machine state_machine;
/**
* 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.
*/
enum sas_linkrate connection_rate;
/**
* This field contains the allowed target protocols for this remote device.
*/
struct smp_discover_response_protocols target_protocols;
/**
* This field contains the device SAS address.
*/
struct sci_sas_address 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 struct scic_sds_remote_device object.
*/
struct sci_base_state_machine 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.
*/
const struct scic_sds_remote_device_state_handler *state_handlers;
};
static inline struct scic_sds_remote_device *rnc_to_dev(struct scic_sds_remote_node_context *rnc)
{
struct scic_sds_remote_device *sci_dev;
sci_dev = container_of(rnc, typeof(*sci_dev), rnc);
return sci_dev;
}
typedef enum sci_status (*scic_sds_remote_device_request_handler_t)(
struct scic_sds_remote_device *device,
struct scic_sds_request *request);
typedef enum sci_status (*scic_sds_remote_device_high_priority_request_complete_handler_t)(
struct scic_sds_remote_device *device,
struct scic_sds_request *request,
void *,
enum sci_io_status);
typedef enum sci_status (*scic_sds_remote_device_handler_t)(
struct scic_sds_remote_device *sci_dev);
typedef enum sci_status (*scic_sds_remote_device_suspend_handler_t)(
struct scic_sds_remote_device *sci_dev,
u32 suspend_type);
typedef enum sci_status (*scic_sds_remote_device_resume_handler_t)(
struct scic_sds_remote_device *sci_dev);
typedef enum sci_status (*scic_sds_remote_device_frame_handler_t)(
struct scic_sds_remote_device *sci_dev,
u32 frame_index);
typedef enum sci_status (*scic_sds_remote_device_event_handler_t)(
struct scic_sds_remote_device *sci_dev,
u32 event_code);
typedef void (*scic_sds_remote_device_ready_not_ready_handler_t)(
struct scic_sds_remote_device *sci_dev);
/**
* struct scic_sds_remote_device_state_handler - This structure conains the
* state handlers that are needed to process requests for the SCU remote
* device objects.
*
*
*/
struct scic_sds_remote_device_state_handler {
/**
* The start_handler specifies the method invoked when a user
* attempts to start a remote device.
*/
scic_sds_remote_device_handler_t start_handler;
/**
* The stop_handler specifies the method invoked when a user attempts to
* stop a remote device.
*/
scic_sds_remote_device_handler_t stop_handler;
/**
* The fail_handler specifies the method invoked when a remote device
* failure has occurred. A failure may be due to an inability to
* initialize/configure the device.
*/
scic_sds_remote_device_handler_t fail_handler;
/**
* The destruct_handler specifies the method invoked when attempting to
* destruct a remote device.
*/
scic_sds_remote_device_handler_t destruct_handler;
/**
* The reset handler specifies the method invloked when requesting to
* reset a remote device.
*/
scic_sds_remote_device_handler_t reset_handler;
/**
* The reset complete handler specifies the method invloked when
* reporting that a reset has completed to the remote device.
*/
scic_sds_remote_device_handler_t reset_complete_handler;
/**
* The start_io_handler specifies the method invoked when a user
* attempts to start an IO request for a remote device.
*/
scic_sds_remote_device_request_handler_t start_io_handler;
/**
* The complete_io_handler specifies the method invoked when a user
* attempts to complete an IO request for a remote device.
*/
scic_sds_remote_device_request_handler_t complete_io_handler;
/**
* The continue_io_handler specifies the method invoked when a user
* attempts to continue an IO request for a remote device.
*/
scic_sds_remote_device_request_handler_t continue_io_handler;
/**
* The start_task_handler specifies the method invoked when a user
* attempts to start a task management request for a remote device.
*/
scic_sds_remote_device_request_handler_t start_task_handler;
/**
* The complete_task_handler specifies the method invoked when a user
* attempts to complete a task management request for a remote device.
*/
scic_sds_remote_device_request_handler_t complete_task_handler;
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;
};
extern const struct sci_base_state scic_sds_ssp_remote_device_ready_substate_table[];
extern const struct sci_base_state scic_sds_stp_remote_device_ready_substate_table[];
extern const struct sci_base_state scic_sds_smp_remote_device_ready_substate_table[];
/**
* scic_sds_remote_device_increment_request_count() -
*
* This macro incrments the request count for this device
*/
#define scic_sds_remote_device_increment_request_count(sci_dev) \
((sci_dev)->started_request_count++)
/**
* scic_sds_remote_device_decrement_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(sci_dev) \
((sci_dev)->started_request_count > 0 ? \
(sci_dev)->started_request_count-- : 0)
/**
* scic_sds_remote_device_get_request_count() -
*
* This is a helper macro to return the current device request count.
*/
#define scic_sds_remote_device_get_request_count(sci_dev) \
((sci_dev)->started_request_count)
/**
* scic_sds_remote_device_get_port() -
*
* This macro returns the owning port of this remote device obejct.
*/
#define scic_sds_remote_device_get_port(sci_dev) \
((sci_dev)->owning_port)
/**
* scic_sds_remote_device_get_controller() -
*
* This macro returns the controller object that contains this device object
*/
#define scic_sds_remote_device_get_controller(sci_dev) \
scic_sds_port_get_controller(scic_sds_remote_device_get_port(sci_dev))
/**
* scic_sds_remote_device_set_state_handlers() -
*
* 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(sci_dev, handlers) \
((sci_dev)->state_handlers = (handlers))
/**
* scic_sds_remote_device_get_port() -
*
* This macro returns the owning port of this device
*/
#define scic_sds_remote_device_get_port(sci_dev) \
((sci_dev)->owning_port)
/**
* scic_sds_remote_device_get_sequence() -
*
* This macro returns the remote device sequence value
*/
#define scic_sds_remote_device_get_sequence(sci_dev) \
(\
scic_sds_remote_device_get_controller(sci_dev)-> \
remote_device_sequence[(sci_dev)->rnc.remote_node_index] \
)
/**
* scic_sds_remote_device_get_controller_peg() -
*
* This macro returns the controllers protocol engine group
*/
#define scic_sds_remote_device_get_controller_peg(sci_dev) \
(\
scic_sds_controller_get_protocol_engine_group(\
scic_sds_port_get_controller(\
scic_sds_remote_device_get_port(sci_dev) \
) \
) \
)
/**
* scic_sds_remote_device_get_port_index() -
*
* This macro returns the port index for the devices owning port
*/
#define scic_sds_remote_device_get_port_index(sci_dev) \
(scic_sds_port_get_index(scic_sds_remote_device_get_port(sci_dev)))
/**
* scic_sds_remote_device_get_index() -
*
* This macro returns the remote node index for this device object
*/
#define scic_sds_remote_device_get_index(sci_dev) \
((sci_dev)->rnc.remote_node_index)
/**
* scic_sds_remote_device_build_command_context() -
*
* This macro builds a remote device context for the SCU post request operation
*/
#define scic_sds_remote_device_build_command_context(device, command) \
((command) \
| (scic_sds_remote_device_get_controller_peg((device)) << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) \
| (scic_sds_remote_device_get_port_index((device)) << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) \
| (scic_sds_remote_device_get_index((device))) \
)
/**
* scic_sds_remote_device_set_working_request() -
*
* 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))
enum sci_status scic_sds_remote_device_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index);
enum sci_status scic_sds_remote_device_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code);
enum sci_status scic_sds_remote_device_start_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request);
enum sci_status scic_sds_remote_device_complete_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request);
enum sci_status scic_sds_remote_device_resume(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_suspend(
struct scic_sds_remote_device *sci_dev,
u32 suspend_type);
enum sci_status scic_sds_remote_device_start_task(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request);
void scic_sds_remote_device_post_request(
struct scic_sds_remote_device *sci_dev,
u32 request);
#if !defined(DISABLE_ATAPI)
bool scic_sds_remote_device_is_atapi(
struct scic_sds_remote_device *sci_dev);
#else /* !defined(DISABLE_ATAPI) */
#define scic_sds_remote_device_is_atapi(sci_dev) false
#endif /* !defined(DISABLE_ATAPI) */
void scic_sds_remote_device_start_request(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *sci_req,
enum sci_status status);
void scic_sds_remote_device_continue_request(void *sci_dev);
enum sci_status scic_sds_remote_device_default_start_handler(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_default_fail_handler(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_default_destruct_handler(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_default_reset_handler(
struct scic_sds_remote_device *device);
enum sci_status scic_sds_remote_device_default_reset_complete_handler(
struct scic_sds_remote_device *device);
enum sci_status scic_sds_remote_device_default_start_request_handler(
struct scic_sds_remote_device *device,
struct scic_sds_request *request);
enum sci_status scic_sds_remote_device_default_complete_request_handler(
struct scic_sds_remote_device *device,
struct scic_sds_request *request);
enum sci_status scic_sds_remote_device_default_continue_request_handler(
struct scic_sds_remote_device *device,
struct scic_sds_request *request);
enum sci_status scic_sds_remote_device_default_suspend_handler(
struct scic_sds_remote_device *sci_dev,
u32 suspend_type);
enum sci_status scic_sds_remote_device_default_resume_handler(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_default_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index);
enum sci_status scic_sds_remote_device_ready_state_stop_handler(
struct scic_sds_remote_device *device);
enum sci_status scic_sds_remote_device_ready_state_reset_handler(
struct scic_sds_remote_device *device);
enum sci_status scic_sds_remote_device_general_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index);
enum sci_status scic_sds_remote_device_general_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code);
enum sci_status scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler(
struct scic_sds_remote_device *sci_dev);
#endif /* _SCIC_SDS_REMOTE_DEVICE_H_ */
drivers/scsi/isci/core/scic_sds_request.c
浏览文件 @ 88f3b62a
......@@ -59,11 +59,10 @@
#include "intel_sat.h"
#include "scic_controller.h"
#include "scic_io_request.h"
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scu_registers.h"
#include "scic_sds_port.h"
#include "scic_sds_remote_device.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "scic_sds_smp_request.h"
#include "scic_sds_stp_request.h"
......
drivers/scsi/isci/core/scic_sds_smp_request.c
浏览文件 @ 88f3b62a
......@@ -56,9 +56,8 @@
#include "intel_sas.h"
#include "sci_base_state_machine.h"
#include "scic_controller.h"
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scic_sds_remote_device.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "scic_sds_smp_request.h"
#include "sci_environment.h"
......
drivers/scsi/isci/core/scic_sds_stp_packet_request.c
浏览文件 @ 88f3b62a
......@@ -61,9 +61,8 @@
#include "sati_translator_sequence.h"
#include "sci_base_state.h"
#include "scic_controller.h"
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scic_sds_remote_device.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "scic_sds_stp_packet_request.h"
#include "scic_user_callback.h"
......
drivers/scsi/isci/core/scic_sds_stp_request.c
浏览文件 @ 88f3b62a
......@@ -60,9 +60,8 @@
#include "sci_base_state.h"
#include "sci_base_state_machine.h"
#include "scic_io_request.h"
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scic_sds_remote_device.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "scic_sds_stp_pio_request.h"
#include "scic_sds_stp_request.h"
......
drivers/scsi/isci/host.c
浏览文件 @ 88f3b62a
......@@ -55,14 +55,12 @@
#include "isci.h"
#include "scic_io_request.h"
#include "scic_remote_device.h"
#include "scic_port.h"
#include "port.h"
#include "request.h"
#include "host.h"
#include "probe_roms.h"
#include "core/scic_sds_controller.h"
#include "scic_sds_controller.h"
irqreturn_t isci_msix_isr(int vec, void *data)
{
......
drivers/scsi/isci/host.h
浏览文件 @ 88f3b62a
......@@ -61,7 +61,6 @@
/*#include "task.h"*/
#include "timers.h"
#include "remote_device.h"
#include "scic_remote_device.h"
#define DRV_NAME "isci"
#define SCI_PCI_BAR_COUNT 2
......
drivers/scsi/isci/init.c
浏览文件 @ 88f3b62a
......@@ -62,7 +62,6 @@
#include "isci.h"
#include "task.h"
#include "sci_controller_constants.h"
#include "scic_remote_device.h"
#include "sci_environment.h"
#include "probe_roms.h"
......
drivers/scsi/isci/port.c
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......@@ -63,7 +63,6 @@
#include <linux/workqueue.h>
#include "isci.h"
#include "scic_io_request.h"
#include "scic_remote_device.h"
#include "scic_phy.h"
#include "scic_sds_phy.h"
#include "scic_port.h"
......
drivers/scsi/isci/port.h
浏览文件 @ 88f3b62a
......@@ -64,6 +64,7 @@
struct isci_phy;
struct isci_host;
struct scic_sds_phy;
enum isci_status {
......
drivers/scsi/isci/probe_roms.c
浏览文件 @ 88f3b62a
......@@ -33,7 +33,6 @@
#include "isci.h"
#include "task.h"
#include "sci_controller_constants.h"
#include "scic_remote_device.h"
#include "sci_environment.h"
#include "probe_roms.h"
......
drivers/scsi/isci/remote_device.c
浏览文件 @ 88f3b62a
......@@ -52,18 +52,1169 @@
* (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 "intel_sas.h"
#include "isci.h"
#include "port.h"
#include "remote_device.h"
#include "request.h"
#include "scic_controller.h"
#include "scic_io_request.h"
#include "scic_phy.h"
#include "scic_port.h"
#include "scic_sds_controller.h"
#include "scic_sds_phy.h"
#include "scic_sds_port.h"
#include "remote_node_context.h"
#include "scic_sds_request.h"
#include "sci_environment.h"
#include "sci_util.h"
#include "scu_event_codes.h"
#include "task.h"
enum sci_status scic_remote_device_stop(
struct scic_sds_remote_device *sci_dev,
u32 timeout)
{
return sci_dev->state_handlers->stop_handler(sci_dev);
}
enum sci_status scic_remote_device_reset(
struct scic_sds_remote_device *sci_dev)
{
return sci_dev->state_handlers->reset_handler(sci_dev);
}
enum sci_status scic_remote_device_reset_complete(
struct scic_sds_remote_device *sci_dev)
{
return sci_dev->state_handlers->reset_complete_handler(sci_dev);
}
enum sas_linkrate scic_remote_device_get_connection_rate(
struct scic_sds_remote_device *sci_dev)
{
return sci_dev->connection_rate;
}
void scic_remote_device_get_protocols(
struct scic_sds_remote_device *sci_dev,
struct smp_discover_response_protocols *pr)
{
pr->u.all = sci_dev->target_protocols.u.all;
}
#if !defined(DISABLE_ATAPI)
bool scic_remote_device_is_atapi(struct scic_sds_remote_device *sci_dev)
{
return sci_dev->is_atapi;
}
#endif
/**
*
*
* Remote device timer requirements
*/
#define SCIC_SDS_REMOTE_DEVICE_MINIMUM_TIMER_COUNT (0)
#define SCIC_SDS_REMOTE_DEVICE_MAXIMUM_TIMER_COUNT (SCI_MAX_REMOTE_DEVICES)
/**
*
* @sci_dev: The remote device for which the suspend is being requested.
*
* This method invokes the remote device suspend state handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_suspend(
struct scic_sds_remote_device *sci_dev,
u32 suspend_type)
{
return sci_dev->state_handlers->suspend_handler(sci_dev, suspend_type);
}
/**
*
* @sci_dev: The remote device for which the event handling is being
* requested.
* @frame_index: This is the frame index that is being processed.
*
* This method invokes the frame handler for the remote device state machine
* enum sci_status
*/
enum sci_status scic_sds_remote_device_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index)
{
return sci_dev->state_handlers->frame_handler(sci_dev, frame_index);
}
/**
*
* @sci_dev: The remote device for which the event handling is being
* requested.
* @event_code: This is the event code that is to be processed.
*
* This method invokes the remote device event handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code)
{
return sci_dev->state_handlers->event_handler(sci_dev, event_code);
}
/**
*
* @controller: The controller that is starting the io request.
* @sci_dev: The remote device for which the start io handling is being
* requested.
* @io_request: The io request that is being started.
*
* This method invokes the remote device start io handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_start_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request)
{
return sci_dev->state_handlers->start_io_handler(
sci_dev, io_request);
}
/**
*
* @controller: The controller that is completing the io request.
* @sci_dev: The remote device for which the complete io handling is being
* requested.
* @io_request: The io request that is being completed.
*
* This method invokes the remote device complete io handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_complete_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request)
{
return sci_dev->state_handlers->complete_io_handler(
sci_dev, io_request);
}
/**
*
* @controller: The controller that is starting the task request.
* @sci_dev: The remote device for which the start task handling is being
* requested.
* @io_request: The task request that is being started.
*
* This method invokes the remote device start task handler. enum sci_status
*/
enum sci_status scic_sds_remote_device_start_task(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request)
{
return sci_dev->state_handlers->start_task_handler(
sci_dev, io_request);
}
/**
*
* @controller: The controller that is completing the task request.
* @sci_dev: The remote device for which the complete task handling is
* being requested.
* @io_request: The task request that is being completed.
*
* This method invokes the remote device complete task handler. enum sci_status
*/
/**
*
* @sci_dev:
* @request:
*
* This method takes the request and bulids an appropriate SCU context for the
* request and then requests the controller to post the request. none
*/
void scic_sds_remote_device_post_request(
struct scic_sds_remote_device *sci_dev,
u32 request)
{
u32 context;
context = scic_sds_remote_device_build_command_context(sci_dev, request);
scic_sds_controller_post_request(
scic_sds_remote_device_get_controller(sci_dev),
context
);
}
#if !defined(DISABLE_ATAPI)
/**
*
* @sci_dev: The device to be checked.
*
* This method check the signature fis of a stp device to decide whether a
* device is atapi or not. true if a device is atapi device. False if a device
* is not atapi.
*/
bool scic_sds_remote_device_is_atapi(
struct scic_sds_remote_device *sci_dev)
{
if (!sci_dev->target_protocols.u.bits.attached_stp_target)
return false;
else if (sci_dev->is_direct_attached) {
struct scic_sds_phy *phy;
struct scic_sata_phy_properties properties;
struct sata_fis_reg_d2h *signature_fis;
phy = scic_sds_port_get_a_connected_phy(sci_dev->owning_port);
scic_sata_phy_get_properties(phy, &properties);
/* decode the signature fis. */
signature_fis = &(properties.signature_fis);
if ((signature_fis->sector_count == 0x01)
&& (signature_fis->lba_low == 0x01)
&& (signature_fis->lba_mid == 0x14)
&& (signature_fis->lba_high == 0xEB)
&& ((signature_fis->device & 0x5F) == 0x00)
) {
/* An ATA device supporting the PACKET command set. */
return true;
} else
return false;
} else {
/* Expander supported ATAPI device is not currently supported. */
return false;
}
}
#endif
/**
*
* @user_parameter: This is cast to a remote device object.
*
* This method is called once the remote node context is ready to be freed.
* The remote device can now report that its stop operation is complete. none
*/
static void scic_sds_cb_remote_device_rnc_destruct_complete(
void *user_parameter)
{
struct scic_sds_remote_device *sci_dev;
sci_dev = (struct scic_sds_remote_device *)user_parameter;
BUG_ON(sci_dev->started_request_count != 0);
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
}
/**
*
* @user_parameter: This is cast to a remote device object.
*
* This method is called once the remote node context has transisitioned to a
* ready state. This is the indication that the remote device object can also
* transition to ready. none
*/
static void scic_sds_remote_device_resume_complete_handler(
void *user_parameter)
{
struct scic_sds_remote_device *sci_dev;
sci_dev = (struct scic_sds_remote_device *)user_parameter;
if (
sci_base_state_machine_get_state(&sci_dev->state_machine)
!= SCI_BASE_REMOTE_DEVICE_STATE_READY
) {
sci_base_state_machine_change_state(
&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_READY
);
}
}
/**
*
* @device: This parameter specifies the device for which the request is being
* started.
* @request: This parameter specifies the request being started.
* @status: This parameter specifies the current start operation status.
*
* This method will perform the STP request start processing common to IO
* requests and task requests of all types. none
*/
void scic_sds_remote_device_start_request(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *sci_req,
enum sci_status status)
{
/* We still have a fault in starting the io complete it on the port */
if (status == SCI_SUCCESS)
scic_sds_remote_device_increment_request_count(sci_dev);
else{
sci_dev->owning_port->state_handlers->complete_io_handler(
sci_dev->owning_port, sci_dev, sci_req
);
}
}
/**
*
* @request: This parameter specifies the request being continued.
*
* This method will continue to post tc for a STP request. This method usually
* serves as a callback when RNC gets resumed during a task management
* sequence. none
*/
void scic_sds_remote_device_continue_request(void *dev)
{
struct scic_sds_remote_device *sci_dev = dev;
/* we need to check if this request is still valid to continue. */
if (sci_dev->working_request)
scic_controller_continue_io(sci_dev->working_request);
}
/**
* This method will terminate all of the IO requests in the controllers IO
* request table that were targeted for this device.
* @sci_dev: This parameter specifies the remote device for which to
* attempt to terminate all requests.
*
* This method returns an indication as to whether all requests were
* successfully terminated. If a single request fails to be terminated, then
* this method will return the failure.
*/
static enum sci_status scic_sds_remote_device_terminate_requests(
struct scic_sds_remote_device *sci_dev)
{
enum sci_status status = SCI_SUCCESS;
enum sci_status terminate_status = SCI_SUCCESS;
struct scic_sds_request *sci_req;
u32 index;
u32 request_count = sci_dev->started_request_count;
for (index = 0;
(index < SCI_MAX_IO_REQUESTS) && (request_count > 0);
index++) {
sci_req = sci_dev->owning_port->owning_controller->io_request_table[index];
if ((sci_req != NULL) && (sci_req->target_device == sci_dev)) {
terminate_status = scic_controller_terminate_request(
sci_dev->owning_port->owning_controller,
sci_dev,
sci_req
);
if (terminate_status != SCI_SUCCESS)
status = terminate_status;
request_count--;
}
}
return status;
}
static enum sci_status
default_device_handler(struct scic_sds_remote_device *sci_dev,
const char *func)
{
dev_warn(scirdev_to_dev(sci_dev),
"%s: in wrong state: %d\n", func,
sci_base_state_machine_get_state(&sci_dev->state_machine));
return SCI_FAILURE_INVALID_STATE;
}
enum sci_status scic_sds_remote_device_default_start_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
static enum sci_status scic_sds_remote_device_default_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_fail_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_destruct_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_reset_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_reset_complete_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_suspend_handler(
struct scic_sds_remote_device *sci_dev, u32 suspend_type)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_resume_handler(
struct scic_sds_remote_device *sci_dev)
{
return default_device_handler(sci_dev, __func__);
}
/**
*
* @device: The struct scic_sds_remote_device which is then cast into a
* struct scic_sds_remote_device.
* @event_code: The event code that the struct scic_sds_controller wants the device
* object to process.
*
* This method is the default event handler. It will call the RNC state
* machine handler for any RNC events otherwise it will log a warning and
* returns a failure. enum sci_status SCI_FAILURE_INVALID_STATE
*/
static enum sci_status scic_sds_remote_device_core_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code,
bool is_ready_state)
{
enum sci_status status;
switch (scu_get_event_type(event_code)) {
case SCU_EVENT_TYPE_RNC_OPS_MISC:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
status = scic_sds_remote_node_context_event_handler(&sci_dev->rnc, event_code);
break;
case SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT:
if (scu_get_event_code(event_code) == SCU_EVENT_IT_NEXUS_TIMEOUT) {
status = SCI_SUCCESS;
/* Suspend the associated RNC */
scic_sds_remote_node_context_suspend(&sci_dev->rnc,
SCI_SOFTWARE_SUSPENSION,
NULL, NULL);
dev_dbg(scirdev_to_dev(sci_dev),
"%s: device: %p event code: %x: %s\n",
__func__, sci_dev, event_code,
(is_ready_state)
? "I_T_Nexus_Timeout event"
: "I_T_Nexus_Timeout event in wrong state");
break;
}
/* Else, fall through and treat as unhandled... */
default:
dev_dbg(scirdev_to_dev(sci_dev),
"%s: device: %p event code: %x: %s\n",
__func__, sci_dev, event_code,
(is_ready_state)
? "unexpected event"
: "unexpected event in wrong state");
status = SCI_FAILURE_INVALID_STATE;
break;
}
return status;
}
/**
*
* @device: The struct scic_sds_remote_device which is then cast into a
* struct scic_sds_remote_device.
* @event_code: The event code that the struct scic_sds_controller wants the device
* object to process.
*
* This method is the default event handler. It will call the RNC state
* machine handler for any RNC events otherwise it will log a warning and
* returns a failure. enum sci_status SCI_FAILURE_INVALID_STATE
*/
static enum sci_status scic_sds_remote_device_default_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code)
{
return scic_sds_remote_device_core_event_handler(sci_dev,
event_code,
false);
}
/**
*
* @device: The struct scic_sds_remote_device which is then cast into a
* struct scic_sds_remote_device.
* @frame_index: The frame index for which the struct scic_sds_controller wants this
* device object to process.
*
* This method is the default unsolicited frame handler. It logs a warning,
* releases the frame and returns a failure. enum sci_status
* SCI_FAILURE_INVALID_STATE
*/
enum sci_status scic_sds_remote_device_default_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index)
{
dev_warn(scirdev_to_dev(sci_dev),
"%s: SCIC Remote Device requested to handle frame %x "
"while in wrong state %d\n",
__func__,
frame_index,
sci_base_state_machine_get_state(
&sci_dev->state_machine));
/* Return the frame back to the controller */
scic_sds_controller_release_frame(
scic_sds_remote_device_get_controller(sci_dev), frame_index
);
return SCI_FAILURE_INVALID_STATE;
}
enum sci_status scic_sds_remote_device_default_start_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
return default_device_handler(sci_dev, __func__);
}
enum sci_status scic_sds_remote_device_default_continue_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
return default_device_handler(sci_dev, __func__);
}
/**
*
* @device: The struct scic_sds_remote_device which is then cast into a
* struct scic_sds_remote_device.
* @frame_index: The frame index for which the struct scic_sds_controller wants this
* device object to process.
*
* This method is a general ssp frame handler. In most cases the device object
* needs to route the unsolicited frame processing to the io request object.
* This method decodes the tag for the io request object and routes the
* unsolicited frame to that object. enum sci_status SCI_FAILURE_INVALID_STATE
*/
enum sci_status scic_sds_remote_device_general_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index)
{
enum sci_status result;
struct sci_ssp_frame_header *frame_header;
struct scic_sds_request *io_request;
result = scic_sds_unsolicited_frame_control_get_header(
&(scic_sds_remote_device_get_controller(sci_dev)->uf_control),
frame_index,
(void **)&frame_header
);
if (SCI_SUCCESS == result) {
io_request = scic_sds_controller_get_io_request_from_tag(
scic_sds_remote_device_get_controller(sci_dev), frame_header->tag);
if ((io_request == NULL)
|| (io_request->target_device != sci_dev)) {
/*
* We could not map this tag to a valid IO request
* Just toss the frame and continue */
scic_sds_controller_release_frame(
scic_sds_remote_device_get_controller(sci_dev), frame_index
);
} else {
/* The IO request is now in charge of releasing the frame */
result = io_request->state_handlers->frame_handler(
io_request, frame_index);
}
}
return result;
}
/**
*
* @[in]: sci_dev This is the device object that is receiving the event.
* @[in]: event_code The event code to process.
*
* This is a common method for handling events reported to the remote device
* from the controller object. enum sci_status
*/
enum sci_status scic_sds_remote_device_general_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code)
{
return scic_sds_remote_device_core_event_handler(sci_dev,
event_code,
true);
}
/*
* *****************************************************************************
* * STOPPED STATE HANDLERS
* ***************************************************************************** */
/**
*
* @device:
*
* This method takes the struct scic_sds_remote_device from a stopped state and
* attempts to start it. The RNC buffer for the device is constructed and the
* device state machine is transitioned to the
* SCIC_BASE_REMOTE_DEVICE_STATE_STARTING. enum sci_status SCI_SUCCESS if there is
* an RNC buffer available to construct the remote device.
* SCI_FAILURE_INSUFFICIENT_RESOURCES if there is no RNC buffer available in
* which to construct the remote device.
*/
static enum sci_status scic_sds_remote_device_stopped_state_start_handler(
struct scic_sds_remote_device *sci_dev)
{
enum sci_status status;
status = scic_sds_remote_node_context_resume(&sci_dev->rnc,
scic_sds_remote_device_resume_complete_handler, sci_dev);
if (status == SCI_SUCCESS)
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STARTING);
return status;
}
static enum sci_status scic_sds_remote_device_stopped_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
return SCI_SUCCESS;
}
/**
*
* @sci_dev: The struct scic_sds_remote_device which is cast into a
* struct scic_sds_remote_device.
*
* This method will destruct a struct scic_sds_remote_device that is in a stopped
* state. This is the only state from which a destruct request will succeed.
* The RNi for this struct scic_sds_remote_device is returned to the free pool and the
* device object transitions to the SCI_BASE_REMOTE_DEVICE_STATE_FINAL.
* enum sci_status SCI_SUCCESS
*/
static enum sci_status scic_sds_remote_device_stopped_state_destruct_handler(
struct scic_sds_remote_device *sci_dev)
{
struct scic_sds_controller *scic;
scic = scic_sds_remote_device_get_controller(sci_dev);
scic_sds_controller_free_remote_node_context(scic, sci_dev,
sci_dev->rnc.remote_node_index);
sci_dev->rnc.remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_FINAL);
return SCI_SUCCESS;
}
/*
* *****************************************************************************
* * STARTING STATE HANDLERS
* ***************************************************************************** */
static enum sci_status scic_sds_remote_device_starting_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
/*
* This device has not yet started so there had better be no IO requests
*/
BUG_ON(sci_dev->started_request_count != 0);
/*
* Destroy the remote node context
*/
scic_sds_remote_node_context_destruct(&sci_dev->rnc,
scic_sds_cb_remote_device_rnc_destruct_complete, sci_dev);
/*
* Transition to the stopping state and wait for the remote node to
* complete being posted and invalidated.
*/
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING);
return SCI_SUCCESS;
}
enum sci_status scic_sds_remote_device_ready_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
enum sci_status status = SCI_SUCCESS;
/* Request the parent state machine to transition to the stopping state */
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING);
if (sci_dev->started_request_count == 0) {
scic_sds_remote_node_context_destruct(&sci_dev->rnc,
scic_sds_cb_remote_device_rnc_destruct_complete,
sci_dev);
} else
status = scic_sds_remote_device_terminate_requests(sci_dev);
return status;
}
/**
*
* @device: The struct scic_sds_remote_device object which is cast to a
* struct scic_sds_remote_device object.
*
* This is the ready state device reset handler enum sci_status
*/
enum sci_status scic_sds_remote_device_ready_state_reset_handler(
struct scic_sds_remote_device *sci_dev)
{
/* Request the parent state machine to transition to the stopping state */
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_RESETTING);
return SCI_SUCCESS;
}
/*
* This method will attempt to start a task request for this device object. The
* remote device object will issue the start request for the task and if
* successful it will start the request for the port object then increment its
* own requet count. enum sci_status SCI_SUCCESS if the task request is started for
* this device object. SCI_FAILURE_INSUFFICIENT_RESOURCES if the io request
* object could not get the resources to start.
*/
static enum sci_status scic_sds_remote_device_ready_state_start_task_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status result;
/* See if the port is in a state where we can start the IO request */
result = scic_sds_port_start_io(
scic_sds_remote_device_get_port(sci_dev), sci_dev, request);
if (result == SCI_SUCCESS) {
result = scic_sds_remote_node_context_start_task(&sci_dev->rnc,
request);
if (result == SCI_SUCCESS)
result = scic_sds_request_start(request);
scic_sds_remote_device_start_request(sci_dev, request, result);
}
return result;
}
/*
* This method will attempt to start an io request for this device object. The
* remote device object will issue the start request for the io and if
* successful it will start the request for the port object then increment its
* own requet count. enum sci_status SCI_SUCCESS if the io request is started for
* this device object. SCI_FAILURE_INSUFFICIENT_RESOURCES if the io request
* object could not get the resources to start.
*/
static enum sci_status scic_sds_remote_device_ready_state_start_io_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status result;
/* See if the port is in a state where we can start the IO request */
result = scic_sds_port_start_io(
scic_sds_remote_device_get_port(sci_dev), sci_dev, request);
if (result == SCI_SUCCESS) {
result = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request);
if (result == SCI_SUCCESS)
result = scic_sds_request_start(request);
scic_sds_remote_device_start_request(sci_dev, request, result);
}
return result;
}
/*
* This method will complete the request for the remote device object. The
* method will call the completion handler for the request object and if
* successful it will complete the request on the port object then decrement
* its own started_request_count. enum sci_status
*/
static enum sci_status scic_sds_remote_device_ready_state_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status result;
result = scic_sds_request_complete(request);
if (result != SCI_SUCCESS)
return result;
/* See if the port is in a state
* where we can start the IO request */
result = scic_sds_port_complete_io(
scic_sds_remote_device_get_port(sci_dev),
sci_dev, request);
if (result == SCI_SUCCESS)
scic_sds_remote_device_decrement_request_count(sci_dev);
return result;
}
/*
* *****************************************************************************
* * STOPPING STATE HANDLERS
* ***************************************************************************** */
/**
*
* @sci_dev: The struct scic_sds_remote_device which is cast into a
* struct scic_sds_remote_device.
*
* This method will stop a struct scic_sds_remote_device that is already in the
* SCI_BASE_REMOTE_DEVICE_STATE_STOPPING state. This is not considered an error
* since we allow a stop request on a device that is alreay stopping or
* stopped. enum sci_status SCI_SUCCESS
*/
static enum sci_status scic_sds_remote_device_stopping_state_stop_handler(
struct scic_sds_remote_device *device)
{
/*
* All requests should have been terminated, but if there is an
* attempt to stop a device already in the stopping state, then
* try again to terminate. */
return scic_sds_remote_device_terminate_requests(device);
}
/**
*
* @device: The device object for which the request is completing.
* @request: The task request that is being completed.
*
* This method completes requests for this struct scic_sds_remote_device while it is
* in the SCI_BASE_REMOTE_DEVICE_STATE_STOPPING state. This method calls the
* complete method for the request object and if that is successful the port
* object is called to complete the task request. Then the device object itself
* completes the task request. If struct scic_sds_remote_device started_request_count
* goes to 0 and the invalidate RNC request has completed the device object can
* transition to the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED. enum sci_status
*/
static enum sci_status scic_sds_remote_device_stopping_state_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status status = SCI_SUCCESS;
#include "isci.h"
#include "scic_io_request.h"
#include "scic_remote_device.h"
#include "scic_phy.h"
#include "scic_port.h"
#include "port.h"
#include "remote_device.h"
#include "request.h"
#include "task.h"
status = scic_sds_request_complete(request);
if (status != SCI_SUCCESS)
return status;
status = scic_sds_port_complete_io(scic_sds_remote_device_get_port(sci_dev),
sci_dev, request);
if (status != SCI_SUCCESS)
return status;
scic_sds_remote_device_decrement_request_count(sci_dev);
if (scic_sds_remote_device_get_request_count(sci_dev) == 0)
scic_sds_remote_node_context_destruct(&sci_dev->rnc,
scic_sds_cb_remote_device_rnc_destruct_complete,
sci_dev);
return SCI_SUCCESS;
}
/**
*
* @device: The struct scic_sds_remote_device which is to be cast into a
* struct scic_sds_remote_device object.
*
* This method will complete the reset operation when the device is in the
* resetting state. enum sci_status
*/
static enum sci_status scic_sds_remote_device_resetting_state_reset_complete_handler(
struct scic_sds_remote_device *sci_dev)
{
sci_base_state_machine_change_state(
&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_READY
);
return SCI_SUCCESS;
}
/**
*
* @device: The struct scic_sds_remote_device which is to be cast into a
* struct scic_sds_remote_device object.
*
* This method will stop the remote device while in the resetting state.
* enum sci_status
*/
static enum sci_status scic_sds_remote_device_resetting_state_stop_handler(
struct scic_sds_remote_device *sci_dev)
{
sci_base_state_machine_change_state(
&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING
);
return SCI_SUCCESS;
}
/*
* This method completes requests for this struct scic_sds_remote_device while it is
* in the SCI_BASE_REMOTE_DEVICE_STATE_RESETTING state. This method calls the
* complete method for the request object and if that is successful the port
* object is called to complete the task request. Then the device object itself
* completes the task request. enum sci_status
*/
static enum sci_status scic_sds_remote_device_resetting_state_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
{
enum sci_status status = SCI_SUCCESS;
status = scic_sds_request_complete(request);
if (status == SCI_SUCCESS) {
status = scic_sds_port_complete_io(
scic_sds_remote_device_get_port(sci_dev),
sci_dev, request);
if (status == SCI_SUCCESS) {
scic_sds_remote_device_decrement_request_count(sci_dev);
}
}
return status;
}
static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[] = {
[SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = {
.start_handler = scic_sds_remote_device_stopped_state_start_handler,
.stop_handler = scic_sds_remote_device_stopped_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_stopped_state_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_starting_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_general_event_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_READY] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_ready_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_ready_state_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_ready_state_start_io_handler,
.complete_io_handler = scic_sds_remote_device_ready_state_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_ready_state_start_task_handler,
.complete_task_handler = scic_sds_remote_device_ready_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_general_event_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler,
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_stopping_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_stopping_state_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_stopping_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_general_event_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_resetting_state_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_resetting_state_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_resetting_state_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_resetting_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = {
.start_handler = scic_sds_remote_device_default_start_handler,
.stop_handler = scic_sds_remote_device_default_stop_handler,
.fail_handler = scic_sds_remote_device_default_fail_handler,
.destruct_handler = scic_sds_remote_device_default_destruct_handler,
.reset_handler = scic_sds_remote_device_default_reset_handler,
.reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler,
.start_io_handler = scic_sds_remote_device_default_start_request_handler,
.complete_io_handler = scic_sds_remote_device_default_complete_request_handler,
.continue_io_handler = scic_sds_remote_device_default_continue_request_handler,
.start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.event_handler = scic_sds_remote_device_default_event_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
}
};
static void scic_sds_remote_device_initial_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
sci_dev = container_of(object, typeof(*sci_dev), parent);
SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_INITIAL);
/* Initial state is a transitional state to the stopped state */
sci_base_state_machine_change_state(&sci_dev->state_machine,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
}
/**
* isci_remote_device_change_state() - This function gets the status of the
* remote_device object.
* @isci_device: This parameter points to the isci_remote_device object
*
* status of the object as a isci_status enum.
*/
void isci_remote_device_change_state(
struct isci_remote_device *isci_device,
enum isci_status status)
{
unsigned long flags;
spin_lock_irqsave(&isci_device->state_lock, flags);
isci_device->status = status;
spin_unlock_irqrestore(&isci_device->state_lock, flags);
}
/**
* scic_remote_device_destruct() - free remote node context and destruct
* @remote_device: This parameter specifies the remote device to be destructed.
*
* Remote device objects are a limited resource. As such, they must be
* protected. Thus calls to construct and destruct are mutually exclusive and
* non-reentrant. The return value shall indicate if the device was
* successfully destructed or if some failure occurred. enum sci_status This value
* is returned if the device is successfully destructed.
* SCI_FAILURE_INVALID_REMOTE_DEVICE This value is returned if the supplied
* device isn't valid (e.g. it's already been destoryed, the handle isn't
* valid, etc.).
*/
static enum sci_status scic_remote_device_destruct(struct scic_sds_remote_device *sci_dev)
{
return sci_dev->state_handlers->destruct_handler(sci_dev);
}
/**
* isci_remote_device_deconstruct() - This function frees an isci_remote_device.
......@@ -98,6 +1249,418 @@ static void isci_remote_device_deconstruct(struct isci_host *ihost, struct isci_
wake_up(&ihost->eventq);
}
/**
* isci_remote_device_stop_complete() - This function is called by the scic
* when the remote device stop has completed. We mark the isci device as not
* ready and remove the isci remote device.
* @ihost: This parameter specifies the isci host object.
* @idev: This parameter specifies the remote device.
* @status: This parameter specifies status of the completion.
*
*/
static void isci_remote_device_stop_complete(struct isci_host *ihost,
struct isci_remote_device *idev)
{
dev_dbg(&ihost->pdev->dev, "%s: complete idev = %p\n", __func__, idev);
isci_remote_device_change_state(idev, isci_stopped);
/* after stop, we can tear down resources. */
isci_remote_device_deconstruct(ihost, idev);
}
static void scic_sds_remote_device_stopped_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev;
struct scic_sds_controller *scic;
struct isci_remote_device *idev;
struct isci_host *ihost;
u32 prev_state;
sci_dev = container_of(object, typeof(*sci_dev), parent);
scic = scic_sds_remote_device_get_controller(sci_dev);
ihost = sci_object_get_association(scic);
idev = sci_object_get_association(sci_dev);
SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPED);
/* If we are entering from the stopping state let the SCI User know that
* the stop operation has completed.
*/
prev_state = sci_dev->state_machine.previous_state_id;
if (prev_state == SCI_BASE_REMOTE_DEVICE_STATE_STOPPING)
isci_remote_device_stop_complete(ihost, idev);
scic_sds_controller_remote_device_stopped(scic, sci_dev);
}
static void scic_sds_remote_device_starting_state_enter(struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = container_of(object, typeof(*sci_dev),
parent);
struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
struct isci_host *ihost = sci_object_get_association(scic);
struct isci_remote_device *idev = sci_object_get_association(sci_dev);
SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_STARTING);
isci_remote_device_not_ready(ihost, idev,
SCIC_REMOTE_DEVICE_NOT_READY_START_REQUESTED);
}
static void scic_sds_remote_device_ready_state_enter(struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = container_of(object, typeof(*sci_dev),
parent);
struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
struct isci_host *ihost = sci_object_get_association(scic);
struct isci_remote_device *idev = sci_object_get_association(sci_dev);
SET_STATE_HANDLER(sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_READY);
scic->remote_device_sequence[sci_dev->rnc.remote_node_index]++;
if (sci_dev->has_ready_substate_machine)
sci_base_state_machine_start(&sci_dev->ready_substate_machine);
else
isci_remote_device_ready(ihost, idev);
}
static void scic_sds_remote_device_ready_state_exit(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = container_of(object, typeof(*sci_dev),
parent);
if (sci_dev->has_ready_substate_machine)
sci_base_state_machine_stop(&sci_dev->ready_substate_machine);
else {
struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
struct isci_host *ihost = sci_object_get_association(scic);
struct isci_remote_device *idev = sci_object_get_association(sci_dev);
isci_remote_device_not_ready(ihost, idev,
SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED);
}
}
static void scic_sds_remote_device_stopping_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
SET_STATE_HANDLER(
sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING
);
}
static void scic_sds_remote_device_failed_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
SET_STATE_HANDLER(
sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_FAILED
);
}
static void scic_sds_remote_device_resetting_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
SET_STATE_HANDLER(
sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_RESETTING
);
scic_sds_remote_node_context_suspend(
&sci_dev->rnc, SCI_SOFTWARE_SUSPENSION, NULL, NULL);
}
static void scic_sds_remote_device_resetting_state_exit(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
scic_sds_remote_node_context_resume(&sci_dev->rnc, NULL, NULL);
}
static void scic_sds_remote_device_final_state_enter(
struct sci_base_object *object)
{
struct scic_sds_remote_device *sci_dev = (struct scic_sds_remote_device *)object;
SET_STATE_HANDLER(
sci_dev,
scic_sds_remote_device_state_handler_table,
SCI_BASE_REMOTE_DEVICE_STATE_FINAL
);
}
static const struct sci_base_state scic_sds_remote_device_state_table[] = {
[SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = {
.enter_state = scic_sds_remote_device_initial_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = {
.enter_state = scic_sds_remote_device_stopped_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = {
.enter_state = scic_sds_remote_device_starting_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_READY] = {
.enter_state = scic_sds_remote_device_ready_state_enter,
.exit_state = scic_sds_remote_device_ready_state_exit
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = {
.enter_state = scic_sds_remote_device_stopping_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = {
.enter_state = scic_sds_remote_device_failed_state_enter,
},
[SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = {
.enter_state = scic_sds_remote_device_resetting_state_enter,
.exit_state = scic_sds_remote_device_resetting_state_exit
},
[SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = {
.enter_state = scic_sds_remote_device_final_state_enter,
},
};
/**
* scic_remote_device_construct() - This method will perform the construction
* common to all remote device objects.
* @sci_port: SAS/SATA port through which this device is accessed.
* @sci_dev: remote device to construct
*
* It isn't necessary to call scic_remote_device_destruct() for device objects
* that have only called this method for construction. Once subsequent
* construction methods have been invoked (e.g.
* scic_remote_device_da_construct()), then destruction should occur. none
*/
static void scic_remote_device_construct(struct scic_sds_port *sci_port,
struct scic_sds_remote_device *sci_dev)
{
sci_dev->owning_port = sci_port;
sci_dev->started_request_count = 0;
sci_dev->parent.private = NULL;
sci_base_state_machine_construct(
&sci_dev->state_machine,
&sci_dev->parent,
scic_sds_remote_device_state_table,
SCI_BASE_REMOTE_DEVICE_STATE_INITIAL
);
sci_base_state_machine_start(
&sci_dev->state_machine
);
scic_sds_remote_node_context_construct(&sci_dev->rnc,
SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX);
sci_object_set_association(&sci_dev->rnc, sci_dev);
}
/**
* scic_remote_device_da_construct() - This method will construct a
* SCIC_REMOTE_DEVICE object for a direct attached (da) device. The
* information (e.g. IAF, Signature FIS, etc.) necessary to build the device
* is known to the SCI Core since it is contained in the scic_phy object.
* @remote_device: This parameter specifies the remote device to be destructed.
*
* The user must have previously called scic_remote_device_construct() Remote
* device objects are a limited resource. As such, they must be protected.
* Thus calls to construct and destruct are mutually exclusive and
* non-reentrant. Indicate if the remote device was successfully constructed.
* SCI_SUCCESS Returned if the device was successfully constructed.
* SCI_FAILURE_DEVICE_EXISTS Returned if the device has already been
* constructed. If it's an additional phy for the target, then call
* scic_remote_device_da_add_phy(). SCI_FAILURE_UNSUPPORTED_PROTOCOL Returned
* if the supplied parameters necessitate creation of a remote device for which
* the protocol is not supported by the underlying controller hardware.
* SCI_FAILURE_INSUFFICIENT_RESOURCES This value is returned if the core
* controller associated with the supplied parameters is unable to support
* additional remote devices.
*/
static enum sci_status scic_remote_device_da_construct(struct scic_sds_remote_device *sci_dev)
{
enum sci_status status;
u16 remote_node_index;
struct sci_sas_identify_address_frame_protocols protocols;
/*
* This information is request to determine how many remote node context
* entries will be needed to store the remote node.
*/
scic_sds_port_get_attached_protocols(sci_dev->owning_port, &protocols);
sci_dev->target_protocols.u.all = protocols.u.all;
sci_dev->is_direct_attached = true;
#if !defined(DISABLE_ATAPI)
sci_dev->is_atapi = scic_sds_remote_device_is_atapi(sci_dev);
#endif
status = scic_sds_controller_allocate_remote_node_context(
sci_dev->owning_port->owning_controller,
sci_dev,
&remote_node_index);
if (status == SCI_SUCCESS) {
sci_dev->rnc.remote_node_index = remote_node_index;
scic_sds_port_get_attached_sas_address(
sci_dev->owning_port, &sci_dev->device_address);
if (sci_dev->target_protocols.u.bits.attached_ssp_target) {
sci_dev->has_ready_substate_machine = false;
} else if (sci_dev->target_protocols.u.bits.attached_stp_target) {
sci_dev->has_ready_substate_machine = true;
sci_base_state_machine_construct(
&sci_dev->ready_substate_machine,
&sci_dev->parent,
scic_sds_stp_remote_device_ready_substate_table,
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
} else if (sci_dev->target_protocols.u.bits.attached_smp_target) {
sci_dev->has_ready_substate_machine = true;
/* add the SMP ready substate machine construction here */
sci_base_state_machine_construct(
&sci_dev->ready_substate_machine,
&sci_dev->parent,
scic_sds_smp_remote_device_ready_substate_table,
SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
}
sci_dev->connection_rate = scic_sds_port_get_max_allowed_speed(
sci_dev->owning_port);
/* / @todo Should I assign the port width by reading all of the phys on the port? */
sci_dev->device_port_width = 1;
}
return status;
}
static void scic_sds_remote_device_get_info_from_smp_discover_response(
struct scic_sds_remote_device *sci_dev,
struct smp_response_discover *discover_response)
{
/* decode discover_response to set sas_address to sci_dev. */
sci_dev->device_address.high =
discover_response->attached_sas_address.high;
sci_dev->device_address.low =
discover_response->attached_sas_address.low;
sci_dev->target_protocols.u.all = discover_response->protocols.u.all;
}
/**
* scic_remote_device_ea_construct() - This method will construct an
* SCIC_REMOTE_DEVICE object for an expander attached (ea) device from an
* SMP Discover Response.
* @remote_device: This parameter specifies the remote device to be destructed.
* @discover_response: This parameter specifies the SMP Discovery Response to
* be used in device creation.
*
* The user must have previously called scic_remote_device_construct() Remote
* device objects are a limited resource. As such, they must be protected.
* Thus calls to construct and destruct are mutually exclusive and
* non-reentrant. Indicate if the remote device was successfully constructed.
* SCI_SUCCESS Returned if the device was successfully constructed.
* SCI_FAILURE_DEVICE_EXISTS Returned if the device has already been
* constructed. If it's an additional phy for the target, then call
* scic_ea_remote_device_add_phy(). SCI_FAILURE_UNSUPPORTED_PROTOCOL Returned
* if the supplied parameters necessitate creation of a remote device for which
* the protocol is not supported by the underlying controller hardware.
* SCI_FAILURE_INSUFFICIENT_RESOURCES This value is returned if the core
* controller associated with the supplied parameters is unable to support
* additional remote devices.
*/
static enum sci_status scic_remote_device_ea_construct(struct scic_sds_remote_device *sci_dev,
struct smp_response_discover *discover_response)
{
enum sci_status status;
struct scic_sds_controller *scic;
scic = scic_sds_port_get_controller(sci_dev->owning_port);
scic_sds_remote_device_get_info_from_smp_discover_response(
sci_dev, discover_response);
status = scic_sds_controller_allocate_remote_node_context(
scic, sci_dev, &sci_dev->rnc.remote_node_index);
if (status == SCI_SUCCESS) {
if (sci_dev->target_protocols.u.bits.attached_ssp_target) {
sci_dev->has_ready_substate_machine = false;
} else if (sci_dev->target_protocols.u.bits.attached_smp_target) {
sci_dev->has_ready_substate_machine = true;
/* add the SMP ready substate machine construction here */
sci_base_state_machine_construct(
&sci_dev->ready_substate_machine,
&sci_dev->parent,
scic_sds_smp_remote_device_ready_substate_table,
SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
} else if (sci_dev->target_protocols.u.bits.attached_stp_target) {
sci_dev->has_ready_substate_machine = true;
sci_base_state_machine_construct(
&sci_dev->ready_substate_machine,
&sci_dev->parent,
scic_sds_stp_remote_device_ready_substate_table,
SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
}
/*
* For SAS-2 the physical link rate is actually a logical link
* rate that incorporates multiplexing. The SCU doesn't
* incorporate multiplexing and for the purposes of the
* connection the logical link rate is that same as the
* physical. Furthermore, the SAS-2 and SAS-1.1 fields overlay
* one another, so this code works for both situations. */
sci_dev->connection_rate = min_t(u16,
scic_sds_port_get_max_allowed_speed(sci_dev->owning_port),
discover_response->u2.sas1_1.negotiated_physical_link_rate
);
/* / @todo Should I assign the port width by reading all of the phys on the port? */
sci_dev->device_port_width = 1;
}
return status;
}
/**
* scic_remote_device_start() - This method will start the supplied remote
* device. This method enables normal IO requests to flow through to the
* remote device.
* @remote_device: This parameter specifies the device to be started.
* @timeout: This parameter specifies the number of milliseconds in which the
* start operation should complete.
*
* An indication of whether the device was successfully started. SCI_SUCCESS
* This value is returned if the device was successfully started.
* SCI_FAILURE_INVALID_PHY This value is returned if the user attempts to start
* the device when there have been no phys added to it.
*/
static enum sci_status scic_remote_device_start(struct scic_sds_remote_device *sci_dev,
u32 timeout)
{
return sci_dev->state_handlers->start_handler(sci_dev);
}
/**
* isci_remote_device_construct() - This function calls the scic remote device
......@@ -306,51 +1869,6 @@ void isci_remote_device_not_ready(struct isci_host *ihost,
isci_remote_device_change_state(idev, isci_ready);
}
/**
* isci_remote_device_stop_complete() - This function is called by the scic
* when the remote device stop has completed. We mark the isci device as not
* ready and remove the isci remote device.
* @isci_host: This parameter specifies the isci host object.
* @isci_device: This parameter specifies the remote device.
* @status: This parameter specifies status of the completion.
*
*/
void isci_remote_device_stop_complete(
struct isci_host *isci_host,
struct isci_remote_device *isci_device,
enum sci_status status)
{
dev_dbg(&isci_host->pdev->dev,
"%s: complete isci_device = %p, status = 0x%x\n",
__func__,
isci_device,
status);
isci_remote_device_change_state(isci_device, isci_stopped);
/* after stop, we can tear down resources. */
isci_remote_device_deconstruct(isci_host, isci_device);
}
/**
* isci_remote_device_start_complete() - This function is called by the scic
* when the remote device start has completed
* @isci_host: This parameter specifies the isci host object.
* @isci_device: This parameter specifies the remote device.
* @status: This parameter specifies status of the completion.
*
*/
void isci_remote_device_start_complete(
struct isci_host *isci_host,
struct isci_remote_device *isci_device,
enum sci_status status)
{
}
/**
* isci_remote_device_stop() - This function is called internally to stop the
* remote device.
......@@ -572,21 +2090,3 @@ void isci_device_clear_reset_pending(struct isci_host *ihost, struct isci_remote
}
spin_unlock_irqrestore(&ihost->scic_lock, flags);
}
/**
* isci_remote_device_change_state() - This function gets the status of the
* remote_device object.
* @isci_device: This parameter points to the isci_remote_device object
*
* status of the object as a isci_status enum.
*/
void isci_remote_device_change_state(
struct isci_remote_device *isci_device,
enum isci_status status)
{
unsigned long flags;
spin_lock_irqsave(&isci_device->state_lock, flags);
isci_device->status = status;
spin_unlock_irqrestore(&isci_device->state_lock, flags);
}
drivers/scsi/isci/remote_device.h
浏览文件 @ 88f3b62a
......@@ -53,11 +53,127 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(_ISCI_REMOTE_DEVICE_H_)
#ifndef _ISCI_REMOTE_DEVICE_H_
#define _ISCI_REMOTE_DEVICE_H_
#include "scic_sds_remote_device.h"
#include <scsi/libsas.h>
#include "sci_status.h"
#include "intel_sas.h"
#include "scu_remote_node_context.h"
#include "remote_node_context.h"
#include "port.h"
struct isci_host;
enum scic_remote_device_not_ready_reason_code {
SCIC_REMOTE_DEVICE_NOT_READY_START_REQUESTED,
SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED,
SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED,
SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED,
SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED,
SCIC_REMOTE_DEVICE_NOT_READY_REASON_CODE_MAX
};
struct scic_sds_remote_device {
/**
* The field specifies that the parent object for the base remote
* device is the base object itself.
*/
struct sci_base_object parent;
/**
* This field contains the information for the base remote device state
* machine.
*/
struct sci_base_state_machine state_machine;
/**
* 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.
*/
enum sas_linkrate connection_rate;
/**
* This field contains the allowed target protocols for this remote device.
*/
struct smp_discover_response_protocols target_protocols;
/**
* This field contains the device SAS address.
*/
struct sci_sas_address 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 struct scic_sds_remote_device object.
*/
struct sci_base_state_machine 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.
*/
const struct scic_sds_remote_device_state_handler *state_handlers;
};
struct isci_remote_device {
enum isci_status status;
......@@ -75,12 +191,6 @@ struct isci_remote_device {
#define ISCI_REMOTE_DEVICE_START_TIMEOUT 5000
void isci_remote_device_start_complete(struct isci_host *ihost,
struct isci_remote_device *idev,
enum sci_status);
void isci_remote_device_stop_complete(struct isci_host *ihost,
struct isci_remote_device *idev,
enum sci_status);
enum sci_status isci_remote_device_stop(struct isci_host *ihost,
struct isci_remote_device *idev);
void isci_remote_device_nuke_requests(struct isci_host *ihost,
......@@ -97,5 +207,619 @@ void isci_device_clear_reset_pending(struct isci_host *ihost,
struct isci_remote_device *idev);
void isci_remote_device_change_state(struct isci_remote_device *idev,
enum isci_status status);
/**
* scic_remote_device_stop() - This method will stop both transmission and
* reception of link activity for the supplied remote device. This method
* disables normal IO requests from flowing through to the remote device.
* @remote_device: This parameter specifies the device to be stopped.
* @timeout: This parameter specifies the number of milliseconds in which the
* stop operation should complete.
*
* An indication of whether the device was successfully stopped. SCI_SUCCESS
* This value is returned if the transmission and reception for the device was
* successfully stopped.
*/
enum sci_status scic_remote_device_stop(
struct scic_sds_remote_device *remote_device,
u32 timeout);
/**
* scic_remote_device_reset() - This method will reset the device making it
* ready for operation. This method must be called anytime the device is
* reset either through a SMP phy control or a port hard reset request.
* @remote_device: This parameter specifies the device to be reset.
*
* This method does not actually cause the device hardware to be reset. This
* method resets the software object so that it will be operational after a
* device hardware reset completes. An indication of whether the device reset
* was accepted. SCI_SUCCESS This value is returned if the device reset is
* started.
*/
enum sci_status scic_remote_device_reset(
struct scic_sds_remote_device *remote_device);
/**
* scic_remote_device_reset_complete() - This method informs the device object
* that the reset operation is complete and the device can resume operation
* again.
* @remote_device: This parameter specifies the device which is to be informed
* of the reset complete operation.
*
* An indication that the device is resuming operation. SCI_SUCCESS the device
* is resuming operation.
*/
enum sci_status scic_remote_device_reset_complete(
struct scic_sds_remote_device *remote_device);
/**
* scic_remote_device_get_connection_rate() - This method simply returns the
* link rate at which communications to the remote device occur.
* @remote_device: This parameter specifies the device for which to get the
* connection rate.
*
* Return the link rate at which we transfer for the supplied remote device.
*/
enum sas_linkrate scic_remote_device_get_connection_rate(
struct scic_sds_remote_device *remote_device);
/**
* scic_remote_device_get_protocols() - This method will indicate which
* protocols are supported by this remote device.
* @remote_device: This parameter specifies the device for which to return the
* protocol.
* @protocols: This parameter specifies the output values, from the remote
* device object, which indicate the protocols supported by the supplied
* remote_device.
*
* The type of protocols supported by this device. The values are returned as
* part of a bit mask in order to allow for multi-protocol support.
*/
void scic_remote_device_get_protocols(
struct scic_sds_remote_device *remote_device,
struct smp_discover_response_protocols *protocols);
#if !defined(DISABLE_ATAPI)
/**
* scic_remote_device_is_atapi() -
* @this_device: The device whose type is to be decided.
*
* This method first decide whether a device is a stp target, then decode the
* signature fis of a DA STP device to tell whether it is a standard end disk
* or an ATAPI device. bool Indicate a device is ATAPI device or not.
*/
bool scic_remote_device_is_atapi(
struct scic_sds_remote_device *device_handle);
#else /* !defined(DISABLE_ATAPI) */
#define scic_remote_device_is_atapi(device_handle) false
#endif /* !defined(DISABLE_ATAPI) */
/**
* enum scic_sds_remote_device_states - This enumeration depicts all the states
* for the common remote device state machine.
*
*
*/
enum scic_sds_remote_device_states {
/**
* Simply the initial state for the base remote device state machine.
*/
SCI_BASE_REMOTE_DEVICE_STATE_INITIAL,
/**
* This state indicates that the remote device has successfully been
* stopped. In this state no new IO operations are permitted.
* This state is entered from the INITIAL state.
* This state is entered from the STOPPING state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_STOPPED,
/**
* This state indicates the the remote device is in the process of
* becoming ready (i.e. starting). In this state no new IO operations
* are permitted.
* This state is entered from the STOPPED state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_STARTING,
/**
* This state indicates the remote device is now ready. Thus, the user
* is able to perform IO operations on the remote device.
* This state is entered from the STARTING state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_READY,
/**
* This state indicates that the remote device is in the process of
* stopping. In this state no new IO operations are permitted, but
* existing IO operations are allowed to complete.
* This state is entered from the READY state.
* This state is entered from the FAILED state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_STOPPING,
/**
* This state indicates that the remote device has failed.
* In this state no new IO operations are permitted.
* This state is entered from the INITIALIZING state.
* This state is entered from the READY state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_FAILED,
/**
* This state indicates the device is being reset.
* In this state no new IO operations are permitted.
* This state is entered from the READY state.
*/
SCI_BASE_REMOTE_DEVICE_STATE_RESETTING,
/**
* Simply the final state for the base remote device state machine.
*/
SCI_BASE_REMOTE_DEVICE_STATE_FINAL,
};
/**
* enum scic_sds_ssp_remote_device_ready_substates -
*
* This is the enumeration of the ready substates for the
* struct 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 struct 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 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,
};
/**
* 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,
};
static inline struct scic_sds_remote_device *rnc_to_dev(struct scic_sds_remote_node_context *rnc)
{
struct scic_sds_remote_device *sci_dev;
sci_dev = container_of(rnc, typeof(*sci_dev), rnc);
return sci_dev;
}
typedef enum sci_status (*scic_sds_remote_device_request_handler_t)(
struct scic_sds_remote_device *device,
struct scic_sds_request *request);
typedef enum sci_status (*scic_sds_remote_device_high_priority_request_complete_handler_t)(
struct scic_sds_remote_device *device,
struct scic_sds_request *request,
void *,
enum sci_io_status);
typedef enum sci_status (*scic_sds_remote_device_handler_t)(
struct scic_sds_remote_device *sci_dev);
typedef enum sci_status (*scic_sds_remote_device_suspend_handler_t)(
struct scic_sds_remote_device *sci_dev,
u32 suspend_type);
typedef enum sci_status (*scic_sds_remote_device_resume_handler_t)(
struct scic_sds_remote_device *sci_dev);
typedef enum sci_status (*scic_sds_remote_device_frame_handler_t)(
struct scic_sds_remote_device *sci_dev,
u32 frame_index);
typedef enum sci_status (*scic_sds_remote_device_event_handler_t)(
struct scic_sds_remote_device *sci_dev,
u32 event_code);
typedef void (*scic_sds_remote_device_ready_not_ready_handler_t)(
struct scic_sds_remote_device *sci_dev);
/**
* struct scic_sds_remote_device_state_handler - This structure conains the
* state handlers that are needed to process requests for the SCU remote
* device objects.
*
*
*/
struct scic_sds_remote_device_state_handler {
/**
* The start_handler specifies the method invoked when a user
* attempts to start a remote device.
*/
scic_sds_remote_device_handler_t start_handler;
/**
* The stop_handler specifies the method invoked when a user attempts to
* stop a remote device.
*/
scic_sds_remote_device_handler_t stop_handler;
/**
* The fail_handler specifies the method invoked when a remote device
* failure has occurred. A failure may be due to an inability to
* initialize/configure the device.
*/
scic_sds_remote_device_handler_t fail_handler;
/**
* The destruct_handler specifies the method invoked when attempting to
* destruct a remote device.
*/
scic_sds_remote_device_handler_t destruct_handler;
/**
* The reset handler specifies the method invloked when requesting to
* reset a remote device.
*/
scic_sds_remote_device_handler_t reset_handler;
/**
* The reset complete handler specifies the method invloked when
* reporting that a reset has completed to the remote device.
*/
scic_sds_remote_device_handler_t reset_complete_handler;
/**
* The start_io_handler specifies the method invoked when a user
* attempts to start an IO request for a remote device.
*/
scic_sds_remote_device_request_handler_t start_io_handler;
/**
* The complete_io_handler specifies the method invoked when a user
* attempts to complete an IO request for a remote device.
*/
scic_sds_remote_device_request_handler_t complete_io_handler;
/**
* The continue_io_handler specifies the method invoked when a user
* attempts to continue an IO request for a remote device.
*/
scic_sds_remote_device_request_handler_t continue_io_handler;
/**
* The start_task_handler specifies the method invoked when a user
* attempts to start a task management request for a remote device.
*/
scic_sds_remote_device_request_handler_t start_task_handler;
/**
* The complete_task_handler specifies the method invoked when a user
* attempts to complete a task management request for a remote device.
*/
scic_sds_remote_device_request_handler_t complete_task_handler;
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;
};
extern const struct sci_base_state scic_sds_ssp_remote_device_ready_substate_table[];
extern const struct sci_base_state scic_sds_stp_remote_device_ready_substate_table[];
extern const struct sci_base_state scic_sds_smp_remote_device_ready_substate_table[];
/**
* scic_sds_remote_device_increment_request_count() -
*
* This macro incrments the request count for this device
*/
#define scic_sds_remote_device_increment_request_count(sci_dev) \
((sci_dev)->started_request_count++)
/**
* scic_sds_remote_device_decrement_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(sci_dev) \
((sci_dev)->started_request_count > 0 ? \
(sci_dev)->started_request_count-- : 0)
/**
* scic_sds_remote_device_get_request_count() -
*
* This is a helper macro to return the current device request count.
*/
#define scic_sds_remote_device_get_request_count(sci_dev) \
((sci_dev)->started_request_count)
/**
* scic_sds_remote_device_get_port() -
*
* This macro returns the owning port of this remote device obejct.
*/
#define scic_sds_remote_device_get_port(sci_dev) \
((sci_dev)->owning_port)
/**
* scic_sds_remote_device_get_controller() -
*
* This macro returns the controller object that contains this device object
*/
#define scic_sds_remote_device_get_controller(sci_dev) \
scic_sds_port_get_controller(scic_sds_remote_device_get_port(sci_dev))
/**
* scic_sds_remote_device_set_state_handlers() -
*
* 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(sci_dev, handlers) \
((sci_dev)->state_handlers = (handlers))
/**
* scic_sds_remote_device_get_port() -
*
* This macro returns the owning port of this device
*/
#define scic_sds_remote_device_get_port(sci_dev) \
((sci_dev)->owning_port)
/**
* scic_sds_remote_device_get_sequence() -
*
* This macro returns the remote device sequence value
*/
#define scic_sds_remote_device_get_sequence(sci_dev) \
(\
scic_sds_remote_device_get_controller(sci_dev)-> \
remote_device_sequence[(sci_dev)->rnc.remote_node_index] \
)
/**
* scic_sds_remote_device_get_controller_peg() -
*
* This macro returns the controllers protocol engine group
*/
#define scic_sds_remote_device_get_controller_peg(sci_dev) \
(\
scic_sds_controller_get_protocol_engine_group(\
scic_sds_port_get_controller(\
scic_sds_remote_device_get_port(sci_dev) \
) \
) \
)
/**
* scic_sds_remote_device_get_port_index() -
*
* This macro returns the port index for the devices owning port
*/
#define scic_sds_remote_device_get_port_index(sci_dev) \
(scic_sds_port_get_index(scic_sds_remote_device_get_port(sci_dev)))
/**
* scic_sds_remote_device_get_index() -
*
* This macro returns the remote node index for this device object
*/
#define scic_sds_remote_device_get_index(sci_dev) \
((sci_dev)->rnc.remote_node_index)
/**
* scic_sds_remote_device_build_command_context() -
*
* This macro builds a remote device context for the SCU post request operation
*/
#define scic_sds_remote_device_build_command_context(device, command) \
((command) \
| (scic_sds_remote_device_get_controller_peg((device)) << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) \
| (scic_sds_remote_device_get_port_index((device)) << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) \
| (scic_sds_remote_device_get_index((device))) \
)
/**
* scic_sds_remote_device_set_working_request() -
*
* 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))
enum sci_status scic_sds_remote_device_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index);
enum sci_status scic_sds_remote_device_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code);
enum sci_status scic_sds_remote_device_start_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request);
enum sci_status scic_sds_remote_device_complete_io(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request);
enum sci_status scic_sds_remote_device_resume(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_suspend(
struct scic_sds_remote_device *sci_dev,
u32 suspend_type);
enum sci_status scic_sds_remote_device_start_task(
struct scic_sds_controller *controller,
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *io_request);
void scic_sds_remote_device_post_request(
struct scic_sds_remote_device *sci_dev,
u32 request);
#if !defined(DISABLE_ATAPI)
bool scic_sds_remote_device_is_atapi(
struct scic_sds_remote_device *sci_dev);
#else /* !defined(DISABLE_ATAPI) */
#define scic_sds_remote_device_is_atapi(sci_dev) false
#endif /* !defined(DISABLE_ATAPI) */
void scic_sds_remote_device_start_request(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *sci_req,
enum sci_status status);
void scic_sds_remote_device_continue_request(void *sci_dev);
enum sci_status scic_sds_remote_device_default_start_handler(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_default_fail_handler(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_default_destruct_handler(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_default_reset_handler(
struct scic_sds_remote_device *device);
enum sci_status scic_sds_remote_device_default_reset_complete_handler(
struct scic_sds_remote_device *device);
enum sci_status scic_sds_remote_device_default_start_request_handler(
struct scic_sds_remote_device *device,
struct scic_sds_request *request);
enum sci_status scic_sds_remote_device_default_complete_request_handler(
struct scic_sds_remote_device *device,
struct scic_sds_request *request);
enum sci_status scic_sds_remote_device_default_continue_request_handler(
struct scic_sds_remote_device *device,
struct scic_sds_request *request);
enum sci_status scic_sds_remote_device_default_suspend_handler(
struct scic_sds_remote_device *sci_dev,
u32 suspend_type);
enum sci_status scic_sds_remote_device_default_resume_handler(
struct scic_sds_remote_device *sci_dev);
enum sci_status scic_sds_remote_device_default_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index);
enum sci_status scic_sds_remote_device_ready_state_stop_handler(
struct scic_sds_remote_device *device);
enum sci_status scic_sds_remote_device_ready_state_reset_handler(
struct scic_sds_remote_device *device);
enum sci_status scic_sds_remote_device_general_frame_handler(
struct scic_sds_remote_device *sci_dev,
u32 frame_index);
enum sci_status scic_sds_remote_device_general_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code);
enum sci_status scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler(
struct scic_sds_remote_device *sci_dev);
#endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */
drivers/scsi/isci/core/scic_sds_remote_node_context.c → drivers/scsi/isci/remote_node_context.c
浏览文件 @ 88f3b62a
......@@ -54,11 +54,10 @@
*/
#include "sci_base_state_machine.h"
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scic_sds_port.h"
#include "scic_sds_remote_device.h"
#include "scic_sds_remote_node_context.h"
#include "remote_device.h"
#include "remote_node_context.h"
#include "sci_environment.h"
#include "sci_util.h"
#include "scu_event_codes.h"
......
drivers/scsi/isci/core/scic_sds_remote_node_table.c → drivers/scsi/isci/remote_node_table.c
浏览文件 @ 88f3b62a
......@@ -61,8 +61,8 @@
*/
#include "sci_util.h"
#include "sci_environment.h"
#include "scic_sds_remote_node_table.h"
#include "scic_sds_remote_node_context.h"
#include "remote_node_table.h"
#include "remote_node_context.h"
/**
*
......
drivers/scsi/isci/request.c
浏览文件 @ 88f3b62a
......@@ -54,7 +54,6 @@
*/
#include "isci.h"
#include "scic_remote_device.h"
#include "scic_io_request.h"
#include "scic_task_request.h"
#include "scic_port.h"
......
drivers/scsi/isci/sata.c
浏览文件 @ 88f3b62a
......@@ -54,8 +54,7 @@
*/
#include "isci.h"
#include "scic_remote_device.h"
#include "scic_sds_remote_device.h"
#include "remote_device.h"
#include "scic_io_request.h"
#include "scic_task_request.h"
#include "task.h"
......
drivers/scsi/isci/core/scic_sds_smp_remote_device.c → drivers/scsi/isci/smp_remote_device.c
浏览文件 @ 88f3b62a
......@@ -53,10 +53,9 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scic_sds_port.h"
#include "scic_sds_remote_device.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "sci_environment.h"
#include "sci_util.h"
......
drivers/scsi/isci/core/scic_sds_stp_remote_device.c → drivers/scsi/isci/stp_remote_device.c
浏览文件 @ 88f3b62a
......@@ -57,10 +57,9 @@
#include "intel_sata.h"
#include "intel_sat.h"
#include "sci_base_state.h"
#include "scic_remote_device.h"
#include "scic_sds_controller.h"
#include "scic_sds_port.h"
#include "scic_sds_remote_device.h"
#include "remote_device.h"
#include "scic_sds_request.h"
#include "sci_environment.h"
#include "sci_util.h"
......
drivers/scsi/isci/task.c
浏览文件 @ 88f3b62a
......@@ -56,10 +56,9 @@
#include <linux/completion.h>
#include <linux/irqflags.h>
#include "scic_task_request.h"
#include "scic_remote_device.h"
#include "scic_io_request.h"
#include "scic_sds_remote_device.h"
#include "scic_sds_remote_node_context.h"
#include "remote_device.h"
#include "remote_node_context.h"
#include "isci.h"
#include "request.h"
#include "sata.h"
......
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