diff options
author | Dan Williams <dan.j.williams@intel.com> | 2011-07-03 01:56:22 -0400 |
---|---|---|
committer | Dan Williams <dan.j.williams@intel.com> | 2011-07-03 01:56:22 -0400 |
commit | 6f231dda68080759f1aed3769896e94c73099f0f (patch) | |
tree | 45b6ce02fa40e0e9c35526ac6c45950138387516 /drivers/scsi/isci/core/scu_remote_node_context.h | |
parent | 59c5f46fbe01a00eedf54a23789634438bb80603 (diff) |
isci: Intel(R) C600 Series Chipset Storage Control Unit Driver
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>
Diffstat (limited to 'drivers/scsi/isci/core/scu_remote_node_context.h')
-rw-r--r-- | drivers/scsi/isci/core/scu_remote_node_context.h | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/drivers/scsi/isci/core/scu_remote_node_context.h b/drivers/scsi/isci/core/scu_remote_node_context.h new file mode 100644 index 00000000000..8006f2ee2d1 --- /dev/null +++ b/drivers/scsi/isci/core/scu_remote_node_context.h | |||
@@ -0,0 +1,230 @@ | |||
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 __SCU_REMOTE_NODE_CONTEXT_HEADER__ | ||
57 | #define __SCU_REMOTE_NODE_CONTEXT_HEADER__ | ||
58 | |||
59 | /** | ||
60 | * This file contains the structures and constatns used by the SCU hardware to | ||
61 | * describe a remote node context. | ||
62 | * | ||
63 | * | ||
64 | */ | ||
65 | #include "sci_types.h" | ||
66 | |||
67 | /** | ||
68 | * struct ssp_remote_node_context - This structure contains the SCU hardware | ||
69 | * definition for an SSP remote node. | ||
70 | * | ||
71 | * | ||
72 | */ | ||
73 | struct ssp_remote_node_context { | ||
74 | /* WORD 0 */ | ||
75 | |||
76 | /** | ||
77 | * This field is the remote node index assigned for this remote node. All | ||
78 | * remote nodes must have a unique remote node index. The value of the remote | ||
79 | * node index can not exceed the maximum number of remote nodes reported in | ||
80 | * the SCU device context capacity register. | ||
81 | */ | ||
82 | u32 remote_node_index:12; | ||
83 | u32 reserved0_1:4; | ||
84 | |||
85 | /** | ||
86 | * This field tells the SCU hardware how many simultaneous connections that | ||
87 | * this remote node will support. | ||
88 | */ | ||
89 | u32 remote_node_port_width:4; | ||
90 | |||
91 | /** | ||
92 | * This field tells the SCU hardware which logical port to associate with this | ||
93 | * remote node. | ||
94 | */ | ||
95 | u32 logical_port_index:3; | ||
96 | u32 reserved0_2:5; | ||
97 | |||
98 | /** | ||
99 | * This field will enable the I_T nexus loss timer for this remote node. | ||
100 | */ | ||
101 | u32 nexus_loss_timer_enable:1; | ||
102 | |||
103 | /** | ||
104 | * This field is the for driver debug only and is not used. | ||
105 | */ | ||
106 | u32 check_bit:1; | ||
107 | |||
108 | /** | ||
109 | * This field must be set to true when the hardware DMAs the remote node | ||
110 | * context to the hardware SRAM. When the remote node is being invalidated | ||
111 | * this field must be set to false. | ||
112 | */ | ||
113 | u32 is_valid:1; | ||
114 | |||
115 | /** | ||
116 | * This field must be set to true. | ||
117 | */ | ||
118 | u32 is_remote_node_context:1; | ||
119 | |||
120 | /* WORD 1 - 2 */ | ||
121 | |||
122 | /** | ||
123 | * This is the low word of the remote device SAS Address | ||
124 | */ | ||
125 | u32 remote_sas_address_lo; | ||
126 | |||
127 | /** | ||
128 | * This field is the high word of the remote device SAS Address | ||
129 | */ | ||
130 | u32 remote_sas_address_hi; | ||
131 | |||
132 | /* WORD 3 */ | ||
133 | /** | ||
134 | * This field reprensets the function number assigned to this remote device. | ||
135 | * This value must match the virtual function number that is being used to | ||
136 | * communicate to the device. | ||
137 | */ | ||
138 | u32 function_number:8; | ||
139 | u32 reserved3_1:8; | ||
140 | |||
141 | /** | ||
142 | * This field provides the driver a way to cheat on the arbitration wait time | ||
143 | * for this remote node. | ||
144 | */ | ||
145 | u32 arbitration_wait_time:16; | ||
146 | |||
147 | /* WORD 4 */ | ||
148 | /** | ||
149 | * This field tells the SCU hardware how long this device may occupy the | ||
150 | * connection before it must be closed. | ||
151 | */ | ||
152 | u32 connection_occupancy_timeout:16; | ||
153 | |||
154 | /** | ||
155 | * This field tells the SCU hardware how long to maintain a connection when | ||
156 | * there are no frames being transmitted on the link. | ||
157 | */ | ||
158 | u32 connection_inactivity_timeout:16; | ||
159 | |||
160 | /* WORD 5 */ | ||
161 | /** | ||
162 | * This field allows the driver to cheat on the arbitration wait time for this | ||
163 | * remote node. | ||
164 | */ | ||
165 | u32 initial_arbitration_wait_time:16; | ||
166 | |||
167 | /** | ||
168 | * This field is tells the hardware what to program for the connection rate in | ||
169 | * the open address frame. See the SAS spec for valid values. | ||
170 | */ | ||
171 | u32 oaf_connection_rate:4; | ||
172 | |||
173 | /** | ||
174 | * This field tells the SCU hardware what to program for the features in the | ||
175 | * open address frame. See the SAS spec for valid values. | ||
176 | */ | ||
177 | u32 oaf_features:4; | ||
178 | |||
179 | /** | ||
180 | * This field tells the SCU hardware what to use for the source zone group in | ||
181 | * the open address frame. See the SAS spec for more details on zoning. | ||
182 | */ | ||
183 | u32 oaf_source_zone_group:8; | ||
184 | |||
185 | /* WORD 6 */ | ||
186 | /** | ||
187 | * This field tells the SCU hardware what to use as the more capibilities in | ||
188 | * the open address frame. See the SAS Spec for details. | ||
189 | */ | ||
190 | u32 oaf_more_compatibility_features; | ||
191 | |||
192 | /* WORD 7 */ | ||
193 | u32 reserved7; | ||
194 | |||
195 | }; | ||
196 | |||
197 | /** | ||
198 | * struct stp_remote_node_context - This structure contains the SCU hardware | ||
199 | * definition for a STP remote node. | ||
200 | * | ||
201 | * STP Targets are not yet supported so this definition is a placeholder until | ||
202 | * we do support them. | ||
203 | */ | ||
204 | struct stp_remote_node_context { | ||
205 | /** | ||
206 | * Placeholder data for the STP remote node. | ||
207 | */ | ||
208 | u32 data[8]; | ||
209 | |||
210 | }; | ||
211 | |||
212 | /** | ||
213 | * This union combines the SAS and SATA remote node definitions. | ||
214 | * | ||
215 | * union scu_remote_node_context | ||
216 | */ | ||
217 | union scu_remote_node_context { | ||
218 | /** | ||
219 | * SSP Remote Node | ||
220 | */ | ||
221 | struct ssp_remote_node_context ssp; | ||
222 | |||
223 | /** | ||
224 | * STP Remote Node | ||
225 | */ | ||
226 | struct stp_remote_node_context stp; | ||
227 | |||
228 | }; | ||
229 | |||
230 | #endif /* __SCU_REMOTE_NODE_CONTEXT_HEADER__ */ | ||