xref: /openbmc/linux/drivers/scsi/isci/sas.h (revision 8dda2eac)
1 /*
2  * This file is provided under a dual BSD/GPLv2 license.  When using or
3  * redistributing this file, you may do so under either license.
4  *
5  * GPL LICENSE SUMMARY
6  *
7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of version 2 of the GNU General Public License as
11  * published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
21  * The full GNU General Public License is included in this distribution
22  * in the file called LICENSE.GPL.
23  *
24  * BSD LICENSE
25  *
26  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
27  * All rights reserved.
28  *
29  * Redistribution and use in source and binary forms, with or without
30  * modification, are permitted provided that the following conditions
31  * are met:
32  *
33  *   * Redistributions of source code must retain the above copyright
34  *     notice, this list of conditions and the following disclaimer.
35  *   * Redistributions in binary form must reproduce the above copyright
36  *     notice, this list of conditions and the following disclaimer in
37  *     the documentation and/or other materials provided with the
38  *     distribution.
39  *   * Neither the name of Intel Corporation nor the names of its
40  *     contributors may be used to endorse or promote products derived
41  *     from this software without specific prior written permission.
42  *
43  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54  */
55 
56 #ifndef _SCI_SAS_H_
57 #define _SCI_SAS_H_
58 
59 #include <linux/kernel.h>
60 
61 /*
62  * SATA FIS Types These constants depict the various SATA FIS types devined in
63  * the serial ATA specification.
64  * XXX: This needs to go into <scsi/sas.h>
65  */
66 #define FIS_REGH2D          0x27
67 #define FIS_REGD2H          0x34
68 #define FIS_SETDEVBITS      0xA1
69 #define FIS_DMA_ACTIVATE    0x39
70 #define FIS_DMA_SETUP       0x41
71 #define FIS_BIST_ACTIVATE   0x58
72 #define FIS_PIO_SETUP       0x5F
73 #define FIS_DATA            0x46
74 
75 /**************************************************************************/
76 #define SSP_RESP_IU_MAX_SIZE	280
77 
78 /*
79  * contents of the SSP COMMAND INFORMATION UNIT.
80  * For specific information on each of these individual fields please
81  * reference the SAS specification SSP transport layer section.
82  * XXX: This needs to go into <scsi/sas.h>
83  */
84 struct ssp_cmd_iu {
85 	u8 LUN[8];
86 	u8 add_cdb_len:6;
87 	u8 _r_a:2;
88 	u8 _r_b;
89 	u8 en_fburst:1;
90 	u8 task_prio:4;
91 	u8 task_attr:3;
92 	u8 _r_c;
93 
94 	u8 cdb[16];
95 }  __packed;
96 
97 /*
98  * contents of the SSP TASK INFORMATION UNIT.
99  * For specific information on each of these individual fields please
100  * reference the SAS specification SSP transport layer section.
101  * XXX: This needs to go into <scsi/sas.h>
102  */
103 struct ssp_task_iu {
104 	u8 LUN[8];
105 	u8 _r_a;
106 	u8 task_func;
107 	u8 _r_b[4];
108 	u16 task_tag;
109 	u8 _r_c[12];
110 }  __packed;
111 
112 
113 /*
114  * struct smp_req_phy_id - This structure defines the contents of
115  *    an SMP Request that is comprised of the struct smp_request_header and a
116  *    phy identifier.
117  *    Examples: SMP_REQUEST_DISCOVER, SMP_REQUEST_REPORT_PHY_SATA.
118  *
119  * For specific information on each of these individual fields please reference
120  * the SAS specification.
121  */
122 struct smp_req_phy_id {
123 	u8 _r_a[4];		/* bytes 4-7 */
124 
125 	u8 ign_zone_grp:1;	/* byte 8 */
126 	u8 _r_b:7;
127 
128 	u8 phy_id;		/* byte 9 */
129 	u8 _r_c;		/* byte 10 */
130 	u8 _r_d;		/* byte 11 */
131 }  __packed;
132 
133 /*
134  * struct smp_req_config_route_info - This structure defines the
135  *    contents of an SMP Configure Route Information request.
136  *
137  * For specific information on each of these individual fields please reference
138  * the SAS specification.
139  */
140 struct smp_req_conf_rtinfo {
141 	u16 exp_change_cnt;		/* bytes 4-5 */
142 	u8 exp_rt_idx_hi;		/* byte 6 */
143 	u8 exp_rt_idx;			/* byte 7 */
144 
145 	u8 _r_a;			/* byte 8 */
146 	u8 phy_id;			/* byte 9 */
147 	u16 _r_b;			/* bytes 10-11 */
148 
149 	u8 _r_c:7;			/* byte 12 */
150 	u8 dis_rt_entry:1;
151 	u8 _r_d[3];			/* bytes 13-15 */
152 
153 	u8 rt_sas_addr[8];		/* bytes 16-23 */
154 	u8 _r_e[16];			/* bytes 24-39 */
155 }  __packed;
156 
157 /*
158  * struct smp_req_phycntl - This structure defines the contents of an
159  *    SMP Phy Controller request.
160  *
161  * For specific information on each of these individual fields please reference
162  * the SAS specification.
163  */
164 struct smp_req_phycntl {
165 	u16 exp_change_cnt;		/* byte 4-5 */
166 
167 	u8 _r_a[3];			/* bytes 6-8 */
168 
169 	u8 phy_id;			/* byte 9 */
170 	u8 phy_op;			/* byte 10 */
171 
172 	u8 upd_pathway:1;		/* byte 11 */
173 	u8 _r_b:7;
174 
175 	u8 _r_c[12];			/* byte 12-23 */
176 
177 	u8 att_dev_name[8];             /* byte 24-31 */
178 
179 	u8 _r_d:4;			/* byte 32 */
180 	u8 min_linkrate:4;
181 
182 	u8 _r_e:4;			/* byte 33 */
183 	u8 max_linkrate:4;
184 
185 	u8 _r_f[2];			/* byte 34-35 */
186 
187 	u8 pathway:4;			/* byte 36 */
188 	u8 _r_g:4;
189 
190 	u8 _r_h[3];			/* bytes 37-39 */
191 }  __packed;
192 
193 /*
194  * struct smp_req - This structure simply unionizes the existing request
195  *    structures into a common request type.
196  *
197  * XXX: This data structure may need to go to scsi/sas.h
198  */
199 struct smp_req {
200 	u8 type;		/* byte 0 */
201 	u8 func;		/* byte 1 */
202 	u8 alloc_resp_len;	/* byte 2 */
203 	u8 req_len;		/* byte 3 */
204 	u8 req_data[];
205 }  __packed;
206 
207 /*
208  * struct sci_sas_address - This structure depicts how a SAS address is
209  *    represented by SCI.
210  * XXX convert this to u8 [SAS_ADDR_SIZE] like the rest of libsas
211  *
212  */
213 struct sci_sas_address {
214 	u32 high;
215 	u32 low;
216 };
217 #endif
218