607 строки
21 KiB
C
607 строки
21 KiB
C
/*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __ISCI_H__
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#define __ISCI_H__
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#include <linux/interrupt.h>
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#include <linux/types.h>
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#define DRV_NAME "isci"
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#define SCI_PCI_BAR_COUNT 2
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#define SCI_NUM_MSI_X_INT 2
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#define SCI_SMU_BAR 0
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#define SCI_SMU_BAR_SIZE (16*1024)
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#define SCI_SCU_BAR 1
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#define SCI_SCU_BAR_SIZE (4*1024*1024)
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#define SCI_IO_SPACE_BAR0 2
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#define SCI_IO_SPACE_BAR1 3
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#define ISCI_CAN_QUEUE_VAL 250 /* < SCI_MAX_IO_REQUESTS ? */
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#define SCIC_CONTROLLER_STOP_TIMEOUT 5000
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#define SCI_CONTROLLER_INVALID_IO_TAG 0xFFFF
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enum sci_controller_mode {
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SCI_MODE_SPEED,
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SCI_MODE_SIZE /* deprecated */
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};
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#define SCI_MAX_PHYS (4)
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#define SCI_MAX_PORTS SCI_MAX_PHYS
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#define SCI_MIN_SMP_PHYS (38)
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#define SCI_MAX_SMP_PHYS (384) /* not silicon constrained */
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#define SCI_MAX_REMOTE_DEVICES (256)
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#define SCI_MIN_REMOTE_DEVICES (16)
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#define SCI_MAX_IO_REQUESTS (256)
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#define SCI_MIN_IO_REQUESTS (1)
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#define SCI_MAX_MSIX_MESSAGES (2)
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#define SCI_MAX_SCATTER_GATHER_ELEMENTS 130 /* not silicon constrained */
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#define SCI_MIN_SCATTER_GATHER_ELEMENTS 1
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#define SCI_MAX_CONTROLLERS 2
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#define SCI_MAX_DOMAINS SCI_MAX_PORTS
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/* 2 indicates the maximum number of UFs that can occur for a given IO request.
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* The hardware handles reception of additional unsolicited frames while all
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* UFs are in use, by holding off the transmitting device. This number could
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* be theoretically reduced to 1, but 2 provides for more reliable operation.
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* During SATA PIO operation, it is possible under some conditions for there to
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* be 3 separate FISes received, back to back to back (PIO Setup, Data, D2H
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* Register). It is unlikely to have all 3 pending all at once without some of
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* them already being processed.
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*/
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#define SCU_MIN_UNSOLICITED_FRAMES (1)
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#define SCU_MIN_CRITICAL_NOTIFICATIONS (24)
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#define SCU_MIN_EVENTS (4)
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#define SCU_MIN_COMPLETION_QUEUE_SCRATCH (2)
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#define SCU_MIN_COMPLETION_QUEUE_ENTRIES (SCU_MIN_CRITICAL_NOTIFICATIONS \
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+ SCU_MIN_EVENTS \
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+ SCU_MIN_UNSOLICITED_FRAMES \
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+ SCI_MIN_IO_REQUESTS \
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+ SCU_MIN_COMPLETION_QUEUE_SCRATCH)
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#define SCU_MAX_CRITICAL_NOTIFICATIONS (384)
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#define SCU_MAX_EVENTS (128)
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#define SCU_MAX_UNSOLICITED_FRAMES (128)
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#define SCU_MAX_COMPLETION_QUEUE_SCRATCH (128)
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#define SCU_MAX_COMPLETION_QUEUE_ENTRIES (SCU_MAX_CRITICAL_NOTIFICATIONS \
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+ SCU_MAX_EVENTS \
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+ SCU_MAX_UNSOLICITED_FRAMES \
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+ SCI_MAX_IO_REQUESTS \
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+ SCU_MAX_COMPLETION_QUEUE_SCRATCH)
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#if !defined(ENABLE_MINIMUM_MEMORY_MODE)
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#define SCU_UNSOLICITED_FRAME_COUNT SCU_MAX_UNSOLICITED_FRAMES
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#define SCU_CRITICAL_NOTIFICATION_COUNT SCU_MAX_CRITICAL_NOTIFICATIONS
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#define SCU_EVENT_COUNT SCU_MAX_EVENTS
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#define SCU_COMPLETION_QUEUE_SCRATCH SCU_MAX_COMPLETION_QUEUE_SCRATCH
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#define SCU_IO_REQUEST_COUNT SCI_MAX_IO_REQUESTS
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#define SCU_IO_REQUEST_SGE_COUNT SCI_MAX_SCATTER_GATHER_ELEMENTS
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#define SCU_COMPLETION_QUEUE_COUNT SCU_MAX_COMPLETION_QUEUE_ENTRIES
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#else
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#define SCU_UNSOLICITED_FRAME_COUNT SCU_MIN_UNSOLICITED_FRAMES
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#define SCU_CRITICAL_NOTIFICATION_COUNT SCU_MIN_CRITICAL_NOTIFICATIONS
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#define SCU_EVENT_COUNT SCU_MIN_EVENTS
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#define SCU_COMPLETION_QUEUE_SCRATCH SCU_MIN_COMPLETION_QUEUE_SCRATCH
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#define SCU_IO_REQUEST_COUNT SCI_MIN_IO_REQUESTS
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#define SCU_IO_REQUEST_SGE_COUNT SCI_MIN_SCATTER_GATHER_ELEMENTS
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#define SCU_COMPLETION_QUEUE_COUNT SCU_MIN_COMPLETION_QUEUE_ENTRIES
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#endif /* !defined(ENABLE_MINIMUM_MEMORY_OPERATION) */
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/**
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*
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*
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* The SCU_COMPLETION_QUEUE_COUNT constant indicates the size of the completion
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* queue into which the hardware DMAs 32-bit quantas (completion entries).
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*/
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/**
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*
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*
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* This queue must be programmed to a power of 2 size (e.g. 32, 64, 1024, etc.).
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*/
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#if (SCU_COMPLETION_QUEUE_COUNT != 16) && \
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(SCU_COMPLETION_QUEUE_COUNT != 32) && \
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(SCU_COMPLETION_QUEUE_COUNT != 64) && \
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(SCU_COMPLETION_QUEUE_COUNT != 128) && \
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(SCU_COMPLETION_QUEUE_COUNT != 256) && \
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(SCU_COMPLETION_QUEUE_COUNT != 512) && \
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(SCU_COMPLETION_QUEUE_COUNT != 1024)
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#error "SCU_COMPLETION_QUEUE_COUNT must be set to a power of 2."
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#endif
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#if SCU_MIN_UNSOLICITED_FRAMES > SCU_MAX_UNSOLICITED_FRAMES
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#error "Invalid configuration of unsolicited frame constants"
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#endif /* SCU_MIN_UNSOLICITED_FRAMES > SCU_MAX_UNSOLICITED_FRAMES */
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#define SCU_MIN_UF_TABLE_ENTRIES (8)
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#define SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES (4096)
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#define SCU_UNSOLICITED_FRAME_BUFFER_SIZE (1024)
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#define SCU_INVALID_FRAME_INDEX (0xFFFF)
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#define SCU_IO_REQUEST_MAX_SGE_SIZE (0x00FFFFFF)
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#define SCU_IO_REQUEST_MAX_TRANSFER_LENGTH (0x00FFFFFF)
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/*
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* Determine the size of the unsolicited frame array including
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* unused buffers. */
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#if SCU_UNSOLICITED_FRAME_COUNT <= SCU_MIN_UF_TABLE_ENTRIES
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#define SCU_UNSOLICITED_FRAME_CONTROL_ARRAY_SIZE SCU_MIN_UF_TABLE_ENTRIES
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#else
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#define SCU_UNSOLICITED_FRAME_CONTROL_ARRAY_SIZE SCU_MAX_UNSOLICITED_FRAMES
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#endif /* SCU_UNSOLICITED_FRAME_COUNT <= SCU_MIN_UF_TABLE_ENTRIES */
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/**
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* enum sci_status - This is the general return status enumeration for non-IO,
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* non-task management related SCI interface methods.
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*
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*
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*/
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enum sci_status {
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/**
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* This member indicates successful completion.
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*/
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SCI_SUCCESS = 0,
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/**
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* This value indicates that the calling method completed successfully,
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* but that the IO may have completed before having it's start method
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* invoked. This occurs during SAT translation for requests that do
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* not require an IO to the target or for any other requests that may
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* be completed without having to submit IO.
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*/
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SCI_SUCCESS_IO_COMPLETE_BEFORE_START,
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/**
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* This Value indicates that the SCU hardware returned an early response
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* because the io request specified more data than is returned by the
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* target device (mode pages, inquiry data, etc.). The completion routine
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* will handle this case to get the actual number of bytes transferred.
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*/
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SCI_SUCCESS_IO_DONE_EARLY,
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/**
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* This member indicates that the object for which a state change is
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* being requested is already in said state.
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*/
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SCI_WARNING_ALREADY_IN_STATE,
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/**
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* This member indicates interrupt coalescence timer may cause SAS
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* specification compliance issues (i.e. SMP target mode response
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* frames must be returned within 1.9 milliseconds).
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*/
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SCI_WARNING_TIMER_CONFLICT,
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/**
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* This field indicates a sequence of action is not completed yet. Mostly,
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* this status is used when multiple ATA commands are needed in a SATI translation.
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*/
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SCI_WARNING_SEQUENCE_INCOMPLETE,
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/**
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* This member indicates that there was a general failure.
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*/
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SCI_FAILURE,
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/**
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* This member indicates that the SCI implementation is unable to complete
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* an operation due to a critical flaw the prevents any further operation
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* (i.e. an invalid pointer).
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*/
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SCI_FATAL_ERROR,
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/**
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* This member indicates the calling function failed, because the state
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* of the controller is in a state that prevents successful completion.
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*/
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SCI_FAILURE_INVALID_STATE,
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/**
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* This member indicates the calling function failed, because there is
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* insufficient resources/memory to complete the request.
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*/
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SCI_FAILURE_INSUFFICIENT_RESOURCES,
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/**
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* This member indicates the calling function failed, because the
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* controller object required for the operation can't be located.
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*/
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SCI_FAILURE_CONTROLLER_NOT_FOUND,
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/**
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* This member indicates the calling function failed, because the
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* discovered controller type is not supported by the library.
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*/
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SCI_FAILURE_UNSUPPORTED_CONTROLLER_TYPE,
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/**
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* This member indicates the calling function failed, because the
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* requested initialization data version isn't supported.
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*/
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SCI_FAILURE_UNSUPPORTED_INIT_DATA_VERSION,
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/**
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* This member indicates the calling function failed, because the
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* requested configuration of SAS Phys into SAS Ports is not supported.
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*/
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SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION,
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/**
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* This member indicates the calling function failed, because the
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* requested protocol is not supported by the remote device, port,
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* or controller.
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*/
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SCI_FAILURE_UNSUPPORTED_PROTOCOL,
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/**
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* This member indicates the calling function failed, because the
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* requested information type is not supported by the SCI implementation.
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*/
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SCI_FAILURE_UNSUPPORTED_INFORMATION_TYPE,
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/**
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* This member indicates the calling function failed, because the
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* device already exists.
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*/
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SCI_FAILURE_DEVICE_EXISTS,
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/**
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* This member indicates the calling function failed, because adding
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* a phy to the object is not possible.
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*/
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SCI_FAILURE_ADDING_PHY_UNSUPPORTED,
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/**
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* This member indicates the calling function failed, because the
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* requested information type is not supported by the SCI implementation.
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*/
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SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD,
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/**
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* This member indicates the calling function failed, because the SCI
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* implementation does not support the supplied time limit.
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*/
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SCI_FAILURE_UNSUPPORTED_TIME_LIMIT,
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/**
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* This member indicates the calling method failed, because the SCI
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* implementation does not contain the specified Phy.
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*/
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SCI_FAILURE_INVALID_PHY,
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/**
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* This member indicates the calling method failed, because the SCI
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* implementation does not contain the specified Port.
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*/
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SCI_FAILURE_INVALID_PORT,
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/**
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* This member indicates the calling method was partly successful
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* The port was reset but not all phys in port are operational
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*/
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SCI_FAILURE_RESET_PORT_PARTIAL_SUCCESS,
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/**
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* This member indicates that calling method failed
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* The port reset did not complete because none of the phys are operational
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*/
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SCI_FAILURE_RESET_PORT_FAILURE,
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/**
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* This member indicates the calling method failed, because the SCI
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* implementation does not contain the specified remote device.
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*/
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SCI_FAILURE_INVALID_REMOTE_DEVICE,
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/**
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* This member indicates the calling method failed, because the remote
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* device is in a bad state and requires a reset.
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*/
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SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
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/**
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* This member indicates the calling method failed, because the SCI
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* implementation does not contain or support the specified IO tag.
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*/
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SCI_FAILURE_INVALID_IO_TAG,
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/**
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* This member indicates that the operation failed and the user should
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* check the response data associated with the IO.
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*/
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SCI_FAILURE_IO_RESPONSE_VALID,
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/**
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* This member indicates that the operation failed, the failure is
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* controller implementation specific, and the response data associated
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* with the request is not valid. You can query for the controller
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* specific error information via scic_controller_get_request_status()
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*/
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SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
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/**
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* This member indicated that the operation failed because the
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* user requested this IO to be terminated.
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*/
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SCI_FAILURE_IO_TERMINATED,
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/**
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* This member indicates that the operation failed and the associated
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* request requires a SCSI abort task to be sent to the target.
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*/
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SCI_FAILURE_IO_REQUIRES_SCSI_ABORT,
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/**
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* This member indicates that the operation failed because the supplied
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* device could not be located.
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*/
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SCI_FAILURE_DEVICE_NOT_FOUND,
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/**
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* This member indicates that the operation failed because the
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* objects association is required and is not correctly set.
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*/
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SCI_FAILURE_INVALID_ASSOCIATION,
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/**
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* This member indicates that the operation failed, because a timeout
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* occurred.
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*/
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SCI_FAILURE_TIMEOUT,
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/**
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* This member indicates that the operation failed, because the user
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* specified a value that is either invalid or not supported.
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*/
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SCI_FAILURE_INVALID_PARAMETER_VALUE,
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/**
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* This value indicates that the operation failed, because the number
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* of messages (MSI-X) is not supported.
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*/
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SCI_FAILURE_UNSUPPORTED_MESSAGE_COUNT,
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/**
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* This value indicates that the method failed due to a lack of
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* available NCQ tags.
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*/
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SCI_FAILURE_NO_NCQ_TAG_AVAILABLE,
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/**
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* This value indicates that a protocol violation has occurred on the
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* link.
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*/
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SCI_FAILURE_PROTOCOL_VIOLATION,
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/**
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* This value indicates a failure condition that retry may help to clear.
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*/
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SCI_FAILURE_RETRY_REQUIRED,
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/**
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* This field indicates the retry limit was reached when a retry is attempted
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*/
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SCI_FAILURE_RETRY_LIMIT_REACHED,
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/**
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* This member indicates the calling method was partly successful.
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* Mostly, this status is used when a LUN_RESET issued to an expander attached
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* STP device in READY NCQ substate needs to have RNC suspended/resumed
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* before posting TC.
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*/
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SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS,
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/**
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* This field indicates an illegal phy connection based on the routing attribute
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* of both expander phy attached to each other.
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*/
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SCI_FAILURE_ILLEGAL_ROUTING_ATTRIBUTE_CONFIGURATION,
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/**
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* This field indicates a CONFIG ROUTE INFO command has a response with function result
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* INDEX DOES NOT EXIST, usually means exceeding max route index.
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*/
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SCI_FAILURE_EXCEED_MAX_ROUTE_INDEX,
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/**
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* This value indicates that an unsupported PCI device ID has been
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* specified. This indicates that attempts to invoke
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* scic_library_allocate_controller() will fail.
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*/
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SCI_FAILURE_UNSUPPORTED_PCI_DEVICE_ID
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};
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/**
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* enum sci_io_status - This enumeration depicts all of the possible IO
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* completion status values. Each value in this enumeration maps directly
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* to a value in the enum sci_status enumeration. Please refer to that
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* enumeration for detailed comments concerning what the status represents.
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*
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* Add the API to retrieve the SCU status from the core. Check to see that the
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* following status are properly handled: - SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL
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* - SCI_IO_FAILURE_INVALID_IO_TAG
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*/
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enum sci_io_status {
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SCI_IO_SUCCESS = SCI_SUCCESS,
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SCI_IO_FAILURE = SCI_FAILURE,
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SCI_IO_SUCCESS_COMPLETE_BEFORE_START = SCI_SUCCESS_IO_COMPLETE_BEFORE_START,
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SCI_IO_SUCCESS_IO_DONE_EARLY = SCI_SUCCESS_IO_DONE_EARLY,
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SCI_IO_FAILURE_INVALID_STATE = SCI_FAILURE_INVALID_STATE,
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SCI_IO_FAILURE_INSUFFICIENT_RESOURCES = SCI_FAILURE_INSUFFICIENT_RESOURCES,
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SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL = SCI_FAILURE_UNSUPPORTED_PROTOCOL,
|
|
SCI_IO_FAILURE_RESPONSE_VALID = SCI_FAILURE_IO_RESPONSE_VALID,
|
|
SCI_IO_FAILURE_CONTROLLER_SPECIFIC_ERR = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
|
|
SCI_IO_FAILURE_TERMINATED = SCI_FAILURE_IO_TERMINATED,
|
|
SCI_IO_FAILURE_REQUIRES_SCSI_ABORT = SCI_FAILURE_IO_REQUIRES_SCSI_ABORT,
|
|
SCI_IO_FAILURE_INVALID_PARAMETER_VALUE = SCI_FAILURE_INVALID_PARAMETER_VALUE,
|
|
SCI_IO_FAILURE_NO_NCQ_TAG_AVAILABLE = SCI_FAILURE_NO_NCQ_TAG_AVAILABLE,
|
|
SCI_IO_FAILURE_PROTOCOL_VIOLATION = SCI_FAILURE_PROTOCOL_VIOLATION,
|
|
|
|
SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
|
|
|
|
SCI_IO_FAILURE_RETRY_REQUIRED = SCI_FAILURE_RETRY_REQUIRED,
|
|
SCI_IO_FAILURE_RETRY_LIMIT_REACHED = SCI_FAILURE_RETRY_LIMIT_REACHED,
|
|
SCI_IO_FAILURE_INVALID_REMOTE_DEVICE = SCI_FAILURE_INVALID_REMOTE_DEVICE
|
|
};
|
|
|
|
/**
|
|
* enum sci_task_status - This enumeration depicts all of the possible task
|
|
* completion status values. Each value in this enumeration maps directly
|
|
* to a value in the enum sci_status enumeration. Please refer to that
|
|
* enumeration for detailed comments concerning what the status represents.
|
|
*
|
|
* Check to see that the following status are properly handled:
|
|
*/
|
|
enum sci_task_status {
|
|
SCI_TASK_SUCCESS = SCI_SUCCESS,
|
|
SCI_TASK_FAILURE = SCI_FAILURE,
|
|
SCI_TASK_FAILURE_INVALID_STATE = SCI_FAILURE_INVALID_STATE,
|
|
SCI_TASK_FAILURE_INSUFFICIENT_RESOURCES = SCI_FAILURE_INSUFFICIENT_RESOURCES,
|
|
SCI_TASK_FAILURE_UNSUPPORTED_PROTOCOL = SCI_FAILURE_UNSUPPORTED_PROTOCOL,
|
|
SCI_TASK_FAILURE_INVALID_TAG = SCI_FAILURE_INVALID_IO_TAG,
|
|
SCI_TASK_FAILURE_RESPONSE_VALID = SCI_FAILURE_IO_RESPONSE_VALID,
|
|
SCI_TASK_FAILURE_CONTROLLER_SPECIFIC_ERR = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
|
|
SCI_TASK_FAILURE_TERMINATED = SCI_FAILURE_IO_TERMINATED,
|
|
SCI_TASK_FAILURE_INVALID_PARAMETER_VALUE = SCI_FAILURE_INVALID_PARAMETER_VALUE,
|
|
|
|
SCI_TASK_FAILURE_REMOTE_DEVICE_RESET_REQUIRED = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
|
|
SCI_TASK_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS = SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS
|
|
|
|
};
|
|
|
|
/**
|
|
* sci_swab32_cpy - convert between scsi and scu-hardware byte format
|
|
* @dest: receive the 4-byte endian swapped version of src
|
|
* @src: word aligned source buffer
|
|
*
|
|
* scu hardware handles SSP/SMP control, response, and unidentified
|
|
* frames in "big endian dword" order. Regardless of host endian this
|
|
* is always a swab32()-per-dword conversion of the standard definition,
|
|
* i.e. single byte fields swapped and multi-byte fields in little-
|
|
* endian
|
|
*/
|
|
static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
|
|
{
|
|
u32 *dest = _dest, *src = _src;
|
|
|
|
while (--word_cnt >= 0)
|
|
dest[word_cnt] = swab32(src[word_cnt]);
|
|
}
|
|
|
|
extern unsigned char no_outbound_task_to;
|
|
extern u16 ssp_max_occ_to;
|
|
extern u16 stp_max_occ_to;
|
|
extern u16 ssp_inactive_to;
|
|
extern u16 stp_inactive_to;
|
|
extern unsigned char phy_gen;
|
|
extern unsigned char max_concurr_spinup;
|
|
|
|
irqreturn_t isci_msix_isr(int vec, void *data);
|
|
irqreturn_t isci_intx_isr(int vec, void *data);
|
|
irqreturn_t isci_error_isr(int vec, void *data);
|
|
|
|
/*
|
|
* Each timer is associated with a cancellation flag that is set when
|
|
* del_timer() is called and checked in the timer callback function. This
|
|
* is needed since del_timer_sync() cannot be called with scic_lock held.
|
|
* For deinit however, del_timer_sync() is used without holding the lock.
|
|
*/
|
|
struct sci_timer {
|
|
struct timer_list timer;
|
|
bool cancel;
|
|
};
|
|
|
|
static inline
|
|
void sci_init_timer(struct sci_timer *tmr, void (*fn)(unsigned long))
|
|
{
|
|
tmr->timer.function = fn;
|
|
tmr->timer.data = (unsigned long) tmr;
|
|
tmr->cancel = 0;
|
|
init_timer(&tmr->timer);
|
|
}
|
|
|
|
static inline void sci_mod_timer(struct sci_timer *tmr, unsigned long msec)
|
|
{
|
|
tmr->cancel = 0;
|
|
mod_timer(&tmr->timer, jiffies + msecs_to_jiffies(msec));
|
|
}
|
|
|
|
static inline void sci_del_timer(struct sci_timer *tmr)
|
|
{
|
|
tmr->cancel = 1;
|
|
del_timer(&tmr->timer);
|
|
}
|
|
|
|
struct sci_base_state_machine {
|
|
const struct sci_base_state *state_table;
|
|
u32 initial_state_id;
|
|
u32 current_state_id;
|
|
u32 previous_state_id;
|
|
};
|
|
|
|
typedef void (*sci_state_transition_t)(struct sci_base_state_machine *sm);
|
|
|
|
struct sci_base_state {
|
|
sci_state_transition_t enter_state; /* Called on state entry */
|
|
sci_state_transition_t exit_state; /* Called on state exit */
|
|
};
|
|
|
|
extern void sci_init_sm(struct sci_base_state_machine *sm,
|
|
const struct sci_base_state *state_table,
|
|
u32 initial_state);
|
|
extern void sci_change_state(struct sci_base_state_machine *sm, u32 next_state);
|
|
#endif /* __ISCI_H__ */
|