6f231dda68
Support for the up to 2x4-port 6Gb/s SAS controllers embedded in the chipset. This is a snapshot of the first publicly available version of the driver, commit 4c1db2d0 in the 'historical' branch. git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci.git historical Signed-off-by: Maciej Trela <maciej.trela@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
151 lines
6.3 KiB
C
151 lines
6.3 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 _SCU_CONSTANTS_H_
|
|
#define _SCU_CONSTANTS_H_
|
|
|
|
/**
|
|
* This file contains the SCU hardware constants.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include "sci_controller_constants.h"
|
|
|
|
/**
|
|
*
|
|
*
|
|
* 2 indicates the maximum number of UFs that can occur for a given IO request.
|
|
* The hardware handles reception of additional unsolicited frames while all
|
|
* UFs are in use, by holding off the transmitting device. This number could
|
|
* be theoretically reduced to 1, but 2 provides for more reliable operation.
|
|
* During SATA PIO operation, it is possible under some conditions for there to
|
|
* be 3 separate FISes received, back to back to back (PIO Setup, Data, D2H
|
|
* Register). It is unlikely to have all 3 pending all at once without some of
|
|
* them already being processed.
|
|
*/
|
|
#define SCU_MIN_UNSOLICITED_FRAMES (1)
|
|
#define SCU_MIN_CRITICAL_NOTIFICATIONS (24)
|
|
#define SCU_MIN_EVENTS (4)
|
|
#define SCU_MIN_COMPLETION_QUEUE_SCRATCH (2)
|
|
#define SCU_MIN_COMPLETION_QUEUE_ENTRIES (SCU_MIN_CRITICAL_NOTIFICATIONS \
|
|
+ SCU_MIN_EVENTS \
|
|
+ SCU_MIN_UNSOLICITED_FRAMES \
|
|
+ SCI_MIN_IO_REQUESTS \
|
|
+ SCU_MIN_COMPLETION_QUEUE_SCRATCH)
|
|
|
|
#define SCU_MAX_CRITICAL_NOTIFICATIONS (384)
|
|
#define SCU_MAX_EVENTS (128)
|
|
#define SCU_MAX_UNSOLICITED_FRAMES (128)
|
|
#define SCU_MAX_COMPLETION_QUEUE_SCRATCH (128)
|
|
#define SCU_MAX_COMPLETION_QUEUE_ENTRIES (SCU_MAX_CRITICAL_NOTIFICATIONS \
|
|
+ SCU_MAX_EVENTS \
|
|
+ SCU_MAX_UNSOLICITED_FRAMES \
|
|
+ SCI_MAX_IO_REQUESTS \
|
|
+ SCU_MAX_COMPLETION_QUEUE_SCRATCH)
|
|
|
|
#if !defined(ENABLE_MINIMUM_MEMORY_MODE)
|
|
#define SCU_UNSOLICITED_FRAME_COUNT SCU_MAX_UNSOLICITED_FRAMES
|
|
#define SCU_CRITICAL_NOTIFICATION_COUNT SCU_MAX_CRITICAL_NOTIFICATIONS
|
|
#define SCU_EVENT_COUNT SCU_MAX_EVENTS
|
|
#define SCU_COMPLETION_QUEUE_SCRATCH SCU_MAX_COMPLETION_QUEUE_SCRATCH
|
|
#define SCU_IO_REQUEST_COUNT SCI_MAX_IO_REQUESTS
|
|
#define SCU_IO_REQUEST_SGE_COUNT SCI_MAX_SCATTER_GATHER_ELEMENTS
|
|
#define SCU_COMPLETION_QUEUE_COUNT SCU_MAX_COMPLETION_QUEUE_ENTRIES
|
|
#else
|
|
#define SCU_UNSOLICITED_FRAME_COUNT SCU_MIN_UNSOLICITED_FRAMES
|
|
#define SCU_CRITICAL_NOTIFICATION_COUNT SCU_MIN_CRITICAL_NOTIFICATIONS
|
|
#define SCU_EVENT_COUNT SCU_MIN_EVENTS
|
|
#define SCU_COMPLETION_QUEUE_SCRATCH SCU_MIN_COMPLETION_QUEUE_SCRATCH
|
|
#define SCU_IO_REQUEST_COUNT SCI_MIN_IO_REQUESTS
|
|
#define SCU_IO_REQUEST_SGE_COUNT SCI_MIN_SCATTER_GATHER_ELEMENTS
|
|
#define SCU_COMPLETION_QUEUE_COUNT SCU_MIN_COMPLETION_QUEUE_ENTRIES
|
|
#endif /* !defined(ENABLE_MINIMUM_MEMORY_OPERATION) */
|
|
|
|
/**
|
|
*
|
|
*
|
|
* The SCU_COMPLETION_QUEUE_COUNT constant indicates the size of the completion
|
|
* queue into which the hardware DMAs 32-bit quantas (completion entries).
|
|
*/
|
|
|
|
/**
|
|
*
|
|
*
|
|
* This queue must be programmed to a power of 2 size (e.g. 32, 64, 1024, etc.).
|
|
*/
|
|
#if (SCU_COMPLETION_QUEUE_COUNT != 16) && \
|
|
(SCU_COMPLETION_QUEUE_COUNT != 32) && \
|
|
(SCU_COMPLETION_QUEUE_COUNT != 64) && \
|
|
(SCU_COMPLETION_QUEUE_COUNT != 128) && \
|
|
(SCU_COMPLETION_QUEUE_COUNT != 256) && \
|
|
(SCU_COMPLETION_QUEUE_COUNT != 512) && \
|
|
(SCU_COMPLETION_QUEUE_COUNT != 1024)
|
|
#error "SCU_COMPLETION_QUEUE_COUNT must be set to a power of 2."
|
|
#endif
|
|
|
|
#if SCU_MIN_UNSOLICITED_FRAMES > SCU_MAX_UNSOLICITED_FRAMES
|
|
#error "Invalid configuration of unsolicited frame constants"
|
|
#endif /* SCU_MIN_UNSOLICITED_FRAMES > SCU_MAX_UNSOLICITED_FRAMES */
|
|
|
|
#define SCU_MIN_UF_TABLE_ENTRIES (8)
|
|
#define SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES (4096)
|
|
#define SCU_UNSOLICITED_FRAME_BUFFER_SIZE (1024)
|
|
#define SCU_INVALID_FRAME_INDEX (0xFFFF)
|
|
|
|
#define SCU_IO_REQUEST_MAX_SGE_SIZE (0x00FFFFFF)
|
|
#define SCU_IO_REQUEST_MAX_TRANSFER_LENGTH (0x00FFFFFF)
|
|
|
|
#endif /* _SCU_CONSTANTS_H_ */
|