mirror of
https://github.com/torvalds/linux
synced 2024-09-30 00:10:51 +00:00
ac78ed0f78
Add comprehensive decode for all TC completions that generate RNC suspensions. Note that this commit also removes unconditional resumptions of ATAPI devices when in the SCI_STP_DEV_ATAPI_ERROR state, and STP devices when in the SCI_STP_DEV_IDLE state. This is because the SCI_STP_DEV_IDLE and SCI_STP_DEV_ATAPI state entry functions manage the RNC resumption. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
219 lines
8 KiB
C
219 lines
8 KiB
C
/*
|
|
* 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_NODE_CONTEXT_H_
|
|
#define _SCIC_SDS_REMOTE_NODE_CONTEXT_H_
|
|
|
|
/**
|
|
* This file contains the structures, constants, and prototypes associated with
|
|
* the remote node context in the silicon. It exists to model and manage
|
|
* the remote node context in the silicon.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include "isci.h"
|
|
|
|
/**
|
|
*
|
|
*
|
|
* This constant represents an invalid remote device id, it is used to program
|
|
* the STPDARNI register so the driver knows when it has received a SIGNATURE
|
|
* FIS from the SCU.
|
|
*/
|
|
#define SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX 0x0FFF
|
|
|
|
enum sci_remote_node_suspension_reasons {
|
|
SCU_HARDWARE_SUSPENSION,
|
|
SCI_SOFTWARE_SUSPENSION
|
|
};
|
|
#define SCI_SOFTWARE_SUSPEND_CMD SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX
|
|
#define SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT SCU_EVENT_TL_RNC_SUSPEND_TX_RX
|
|
|
|
struct isci_request;
|
|
struct isci_remote_device;
|
|
struct sci_remote_node_context;
|
|
|
|
typedef void (*scics_sds_remote_node_context_callback)(void *);
|
|
|
|
/**
|
|
* enum sci_remote_node_context_states
|
|
* @SCI_RNC_INITIAL initial state for a remote node context. On a resume
|
|
* request the remote node context will transition to the posting state.
|
|
*
|
|
* @SCI_RNC_POSTING: transition state that posts the RNi to the hardware. Once
|
|
* the RNC is posted the remote node context will be made ready.
|
|
*
|
|
* @SCI_RNC_INVALIDATING: transition state that will post an RNC invalidate to
|
|
* the hardware. Once the invalidate is complete the remote node context will
|
|
* transition to the posting state.
|
|
*
|
|
* @SCI_RNC_RESUMING: transition state that will post an RNC resume to the
|
|
* hardare. Once the event notification of resume complete is received the
|
|
* remote node context will transition to the ready state.
|
|
*
|
|
* @SCI_RNC_READY: state that the remote node context must be in to accept io
|
|
* request operations.
|
|
*
|
|
* @SCI_RNC_TX_SUSPENDED: state that the remote node context transitions to when
|
|
* it gets a TX suspend notification from the hardware.
|
|
*
|
|
* @SCI_RNC_TX_RX_SUSPENDED: state that the remote node context transitions to
|
|
* when it gets a TX RX suspend notification from the hardware.
|
|
*
|
|
* @SCI_RNC_AWAIT_SUSPENSION: wait state for the remote node context that waits
|
|
* for a suspend notification from the hardware. This state is entered when
|
|
* either there is a request to supend the remote node context or when there is
|
|
* a TC completion where the remote node will be suspended by the hardware.
|
|
*/
|
|
#define RNC_STATES {\
|
|
C(RNC_INITIAL),\
|
|
C(RNC_POSTING),\
|
|
C(RNC_INVALIDATING),\
|
|
C(RNC_RESUMING),\
|
|
C(RNC_READY),\
|
|
C(RNC_TX_SUSPENDED),\
|
|
C(RNC_TX_RX_SUSPENDED),\
|
|
C(RNC_AWAIT_SUSPENSION),\
|
|
}
|
|
#undef C
|
|
#define C(a) SCI_##a
|
|
enum scis_sds_remote_node_context_states RNC_STATES;
|
|
#undef C
|
|
const char *rnc_state_name(enum scis_sds_remote_node_context_states state);
|
|
|
|
/**
|
|
*
|
|
*
|
|
* This enumeration is used to define the end destination state for the remote
|
|
* node context.
|
|
*/
|
|
enum sci_remote_node_context_destination_state {
|
|
SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED,
|
|
SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY,
|
|
SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL
|
|
};
|
|
|
|
/**
|
|
* struct sci_remote_node_context - This structure contains the data
|
|
* associated with the remote node context object. The remote node context
|
|
* (RNC) object models the the remote device information necessary to manage
|
|
* the silicon RNC.
|
|
*/
|
|
struct sci_remote_node_context {
|
|
/**
|
|
* This field indicates the remote node index (RNI) associated with
|
|
* this RNC.
|
|
*/
|
|
u16 remote_node_index;
|
|
|
|
/**
|
|
* This field is the recored suspension type of the remote node
|
|
* context suspension.
|
|
*/
|
|
u32 suspend_type;
|
|
|
|
/**
|
|
* This field is true if the remote node context is resuming from its current
|
|
* state. This can cause an automatic resume on receiving a suspension
|
|
* notification.
|
|
*/
|
|
enum sci_remote_node_context_destination_state destination_state;
|
|
|
|
/**
|
|
* This field contains the callback function that the user requested to be
|
|
* called when the requested state transition is complete.
|
|
*/
|
|
scics_sds_remote_node_context_callback user_callback;
|
|
|
|
/**
|
|
* This field contains the parameter that is called when the user requested
|
|
* state transition is completed.
|
|
*/
|
|
void *user_cookie;
|
|
|
|
/**
|
|
* This field contains the data for the object's state machine.
|
|
*/
|
|
struct sci_base_state_machine sm;
|
|
};
|
|
|
|
void sci_remote_node_context_construct(struct sci_remote_node_context *rnc,
|
|
u16 remote_node_index);
|
|
|
|
|
|
bool sci_remote_node_context_is_ready(
|
|
struct sci_remote_node_context *sci_rnc);
|
|
|
|
enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_context *sci_rnc,
|
|
u32 event_code);
|
|
enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context *sci_rnc,
|
|
scics_sds_remote_node_context_callback callback,
|
|
void *callback_parameter);
|
|
enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context *sci_rnc,
|
|
u32 suspend_type,
|
|
u32 suspension_code,
|
|
scics_sds_remote_node_context_callback cb_fn,
|
|
void *cb_p);
|
|
enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *sci_rnc,
|
|
scics_sds_remote_node_context_callback cb_fn,
|
|
void *cb_p);
|
|
enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc,
|
|
struct isci_request *ireq);
|
|
enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context *sci_rnc,
|
|
struct isci_request *ireq);
|
|
|
|
#endif /* _SCIC_SDS_REMOTE_NODE_CONTEXT_H_ */
|