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 | #ifndef _ISCI_TASK_H_ |
56 | #define _ISCI_TASK_H_ |
57 | |
58 | #include <scsi/sas_ata.h> |
59 | #include "host.h" |
60 | |
61 | #define ISCI_TERMINATION_TIMEOUT_MSEC 500 |
62 | |
63 | struct isci_request; |
64 | |
65 | /** |
66 | * enum isci_tmf_function_codes - This enum defines the possible preparations |
67 | * of task management requests. |
68 | * |
69 | * |
70 | */ |
71 | enum isci_tmf_function_codes { |
72 | |
73 | isci_tmf_func_none = 0, |
74 | isci_tmf_ssp_task_abort = TMF_ABORT_TASK, |
75 | isci_tmf_ssp_lun_reset = TMF_LU_RESET, |
76 | }; |
77 | |
78 | /** |
79 | * struct isci_tmf - This class represents the task management object which |
80 | * acts as an interface to libsas for processing task management requests |
81 | * |
82 | * |
83 | */ |
84 | struct isci_tmf { |
85 | |
86 | struct completion *complete; |
87 | enum sas_protocol proto; |
88 | union { |
89 | struct ssp_response_iu resp_iu; |
90 | struct dev_to_host_fis d2h_fis; |
91 | u8 rsp_buf[SSP_RESP_IU_MAX_SIZE]; |
92 | } resp; |
93 | unsigned char lun[8]; |
94 | u16 io_tag; |
95 | enum isci_tmf_function_codes tmf_code; |
96 | int status; |
97 | }; |
98 | |
99 | static inline void isci_print_tmf(struct isci_host *ihost, struct isci_tmf *tmf) |
100 | { |
101 | if (SAS_PROTOCOL_SATA == tmf->proto) |
102 | dev_dbg(&ihost->pdev->dev, |
103 | "%s: status = %x\n" |
104 | "tmf->resp.d2h_fis.status = %x\n" |
105 | "tmf->resp.d2h_fis.error = %x\n" , |
106 | __func__, |
107 | tmf->status, |
108 | tmf->resp.d2h_fis.status, |
109 | tmf->resp.d2h_fis.error); |
110 | else |
111 | dev_dbg(&ihost->pdev->dev, |
112 | "%s: status = %x\n" |
113 | "tmf->resp.resp_iu.data_present = %x\n" |
114 | "tmf->resp.resp_iu.status = %x\n" |
115 | "tmf->resp.resp_iu.data_length = %x\n" |
116 | "tmf->resp.resp_iu.data[0] = %x\n" |
117 | "tmf->resp.resp_iu.data[1] = %x\n" |
118 | "tmf->resp.resp_iu.data[2] = %x\n" |
119 | "tmf->resp.resp_iu.data[3] = %x\n" , |
120 | __func__, |
121 | tmf->status, |
122 | tmf->resp.resp_iu.datapres, |
123 | tmf->resp.resp_iu.status, |
124 | be32_to_cpu(tmf->resp.resp_iu.response_data_len), |
125 | tmf->resp.resp_iu.resp_data[0], |
126 | tmf->resp.resp_iu.resp_data[1], |
127 | tmf->resp.resp_iu.resp_data[2], |
128 | tmf->resp.resp_iu.resp_data[3]); |
129 | } |
130 | |
131 | |
132 | int isci_task_execute_task( |
133 | struct sas_task *task, |
134 | gfp_t gfp_flags); |
135 | |
136 | int isci_task_abort_task( |
137 | struct sas_task *task); |
138 | |
139 | int isci_task_abort_task_set( |
140 | struct domain_device *d_device, |
141 | u8 *lun); |
142 | |
143 | int isci_task_clear_task_set( |
144 | struct domain_device *d_device, |
145 | u8 *lun); |
146 | |
147 | int isci_task_query_task( |
148 | struct sas_task *task); |
149 | |
150 | int isci_task_lu_reset( |
151 | struct domain_device *d_device, |
152 | u8 *lun); |
153 | |
154 | int isci_task_clear_nexus_port( |
155 | struct asd_sas_port *port); |
156 | |
157 | int isci_task_clear_nexus_ha( |
158 | struct sas_ha_struct *ha); |
159 | |
160 | int isci_task_I_T_nexus_reset( |
161 | struct domain_device *d_device); |
162 | |
163 | void isci_task_request_complete( |
164 | struct isci_host *isci_host, |
165 | struct isci_request *request, |
166 | enum sci_task_status completion_status); |
167 | |
168 | u16 isci_task_ssp_request_get_io_tag_to_manage( |
169 | struct isci_request *request); |
170 | |
171 | u8 isci_task_ssp_request_get_function( |
172 | struct isci_request *request); |
173 | |
174 | |
175 | void *isci_task_ssp_request_get_response_data_address( |
176 | struct isci_request *request); |
177 | |
178 | u32 isci_task_ssp_request_get_response_data_length( |
179 | struct isci_request *request); |
180 | |
181 | #endif /* !defined(_SCI_TASK_H_) */ |
182 | |