e9bf709564
Instead of duplicating the smp request buffer reuse the one provided by libsas. This future proofs the driver to support arbitrarily large smp requests, and shrinks the request structure size by ~700 bytes. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
220 lines
6.3 KiB
C
220 lines
6.3 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 _SCI_SAS_H_
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#define _SCI_SAS_H_
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#include <linux/kernel.h>
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/*
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* SATA FIS Types These constants depict the various SATA FIS types devined in
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* the serial ATA specification.
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* XXX: This needs to go into <scsi/sas.h>
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*/
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#define FIS_REGH2D 0x27
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#define FIS_REGD2H 0x34
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#define FIS_SETDEVBITS 0xA1
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#define FIS_DMA_ACTIVATE 0x39
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#define FIS_DMA_SETUP 0x41
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#define FIS_BIST_ACTIVATE 0x58
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#define FIS_PIO_SETUP 0x5F
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#define FIS_DATA 0x46
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/**************************************************************************/
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#define SSP_RESP_IU_MAX_SIZE 280
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/*
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* contents of the SSP COMMAND INFORMATION UNIT.
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* For specific information on each of these individual fields please
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* reference the SAS specification SSP transport layer section.
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* XXX: This needs to go into <scsi/sas.h>
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*/
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struct ssp_cmd_iu {
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u8 LUN[8];
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u8 add_cdb_len:6;
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u8 _r_a:2;
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u8 _r_b;
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u8 en_fburst:1;
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u8 task_prio:4;
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u8 task_attr:3;
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u8 _r_c;
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u8 cdb[16];
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} __packed;
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/*
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* contents of the SSP TASK INFORMATION UNIT.
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* For specific information on each of these individual fields please
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* reference the SAS specification SSP transport layer section.
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* XXX: This needs to go into <scsi/sas.h>
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*/
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struct ssp_task_iu {
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u8 LUN[8];
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u8 _r_a;
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u8 task_func;
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u8 _r_b[4];
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u16 task_tag;
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u8 _r_c[12];
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} __packed;
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/*
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* struct smp_req_phy_id - This structure defines the contents of
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* an SMP Request that is comprised of the struct smp_request_header and a
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* phy identifier.
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* Examples: SMP_REQUEST_DISCOVER, SMP_REQUEST_REPORT_PHY_SATA.
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*
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* For specific information on each of these individual fields please reference
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* the SAS specification.
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*/
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struct smp_req_phy_id {
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u8 _r_a[4]; /* bytes 4-7 */
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u8 ign_zone_grp:1; /* byte 8 */
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u8 _r_b:7;
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u8 phy_id; /* byte 9 */
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u8 _r_c; /* byte 10 */
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u8 _r_d; /* byte 11 */
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} __packed;
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/*
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* struct smp_req_config_route_info - This structure defines the
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* contents of an SMP Configure Route Information request.
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*
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* For specific information on each of these individual fields please reference
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* the SAS specification.
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*/
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struct smp_req_conf_rtinfo {
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u16 exp_change_cnt; /* bytes 4-5 */
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u8 exp_rt_idx_hi; /* byte 6 */
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u8 exp_rt_idx; /* byte 7 */
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u8 _r_a; /* byte 8 */
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u8 phy_id; /* byte 9 */
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u16 _r_b; /* bytes 10-11 */
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u8 _r_c:7; /* byte 12 */
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u8 dis_rt_entry:1;
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u8 _r_d[3]; /* bytes 13-15 */
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u8 rt_sas_addr[8]; /* bytes 16-23 */
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u8 _r_e[16]; /* bytes 24-39 */
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} __packed;
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/*
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* struct smp_req_phycntl - This structure defines the contents of an
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* SMP Phy Controller request.
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*
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* For specific information on each of these individual fields please reference
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* the SAS specification.
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*/
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struct smp_req_phycntl {
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u16 exp_change_cnt; /* byte 4-5 */
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u8 _r_a[3]; /* bytes 6-8 */
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u8 phy_id; /* byte 9 */
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u8 phy_op; /* byte 10 */
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u8 upd_pathway:1; /* byte 11 */
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u8 _r_b:7;
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u8 _r_c[12]; /* byte 12-23 */
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u8 att_dev_name[8]; /* byte 24-31 */
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u8 _r_d:4; /* byte 32 */
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u8 min_linkrate:4;
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u8 _r_e:4; /* byte 33 */
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u8 max_linkrate:4;
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u8 _r_f[2]; /* byte 34-35 */
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u8 pathway:4; /* byte 36 */
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u8 _r_g:4;
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u8 _r_h[3]; /* bytes 37-39 */
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} __packed;
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/*
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* struct smp_req - This structure simply unionizes the existing request
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* structures into a common request type.
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*
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* XXX: This data structure may need to go to scsi/sas.h
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*/
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struct smp_req {
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u8 type; /* byte 0 */
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u8 func; /* byte 1 */
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u8 alloc_resp_len; /* byte 2 */
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u8 req_len; /* byte 3 */
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u8 req_data[0];
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} __packed;
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#define SMP_RESP_HDR_SZ 4
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/*
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* struct sci_sas_address - This structure depicts how a SAS address is
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* represented by SCI.
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* XXX convert this to u8 [SAS_ADDR_SIZE] like the rest of libsas
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*
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*/
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struct sci_sas_address {
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u32 high;
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u32 low;
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};
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#endif
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