diff options
Diffstat (limited to 'drivers/scsi/isci/sata.c')
-rw-r--r-- | drivers/scsi/isci/sata.c | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/drivers/scsi/isci/sata.c b/drivers/scsi/isci/sata.c deleted file mode 100644 index 47b96c21548f..000000000000 --- a/drivers/scsi/isci/sata.c +++ /dev/null | |||
@@ -1,232 +0,0 @@ | |||
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 | #include <scsi/sas.h> | ||
57 | #include "isci.h" | ||
58 | #include "remote_device.h" | ||
59 | #include "task.h" | ||
60 | #include "request.h" | ||
61 | #include "sata.h" | ||
62 | |||
63 | /** | ||
64 | * isci_sata_task_to_fis_copy() - This function gets the host_to_dev_fis from | ||
65 | * the core and copies the fis from the task into it. | ||
66 | * @task: This parameter is a pointer to the task struct from libsas. | ||
67 | * | ||
68 | * pointer to the host_to_dev_fis from the core request object. | ||
69 | */ | ||
70 | struct host_to_dev_fis *isci_sata_task_to_fis_copy(struct sas_task *task) | ||
71 | { | ||
72 | struct isci_request *ireq = task->lldd_task; | ||
73 | struct host_to_dev_fis *fis = &ireq->stp.cmd; | ||
74 | |||
75 | memcpy(fis, &task->ata_task.fis, sizeof(struct host_to_dev_fis)); | ||
76 | |||
77 | if (!task->ata_task.device_control_reg_update) | ||
78 | fis->flags |= 0x80; | ||
79 | |||
80 | fis->flags &= 0xF0; | ||
81 | |||
82 | return fis; | ||
83 | } | ||
84 | |||
85 | /** | ||
86 | * isci_sata_is_task_ncq() - This function determines if the given stp task is | ||
87 | * a ncq request. | ||
88 | * @task: This parameter is a pointer to the task struct from libsas. | ||
89 | * | ||
90 | * true if the task is ncq | ||
91 | */ | ||
92 | bool isci_sata_is_task_ncq(struct sas_task *task) | ||
93 | { | ||
94 | struct ata_queued_cmd *qc = task->uldd_task; | ||
95 | |||
96 | bool ret = (qc && | ||
97 | (qc->tf.command == ATA_CMD_FPDMA_WRITE || | ||
98 | qc->tf.command == ATA_CMD_FPDMA_READ)); | ||
99 | |||
100 | return ret; | ||
101 | } | ||
102 | |||
103 | /** | ||
104 | * isci_sata_set_ncq_tag() - This function sets the ncq tag field in the | ||
105 | * host_to_dev_fis equal to the tag in the queue command in the task. | ||
106 | * @task: This parameter is a pointer to the task struct from libsas. | ||
107 | * @register_fis: This parameter is a pointer to the host_to_dev_fis from the | ||
108 | * core request object. | ||
109 | * | ||
110 | */ | ||
111 | void isci_sata_set_ncq_tag( | ||
112 | struct host_to_dev_fis *register_fis, | ||
113 | struct sas_task *task) | ||
114 | { | ||
115 | struct ata_queued_cmd *qc = task->uldd_task; | ||
116 | struct isci_request *request = task->lldd_task; | ||
117 | |||
118 | register_fis->sector_count = qc->tag << 3; | ||
119 | sci_stp_io_request_set_ncq_tag(request, qc->tag); | ||
120 | } | ||
121 | |||
122 | /** | ||
123 | * isci_request_process_stp_response() - This function sets the status and | ||
124 | * response, in the task struct, from the request object for the upper layer | ||
125 | * driver. | ||
126 | * @sas_task: This parameter is the task struct from the upper layer driver. | ||
127 | * @response_buffer: This parameter points to the response of the completed | ||
128 | * request. | ||
129 | * | ||
130 | * none. | ||
131 | */ | ||
132 | void isci_request_process_stp_response(struct sas_task *task, | ||
133 | void *response_buffer) | ||
134 | { | ||
135 | struct dev_to_host_fis *d2h_reg_fis = response_buffer; | ||
136 | struct task_status_struct *ts = &task->task_status; | ||
137 | struct ata_task_resp *resp = (void *)&ts->buf[0]; | ||
138 | |||
139 | resp->frame_len = le16_to_cpu(*(__le16 *)(response_buffer + 6)); | ||
140 | memcpy(&resp->ending_fis[0], response_buffer + 16, 24); | ||
141 | ts->buf_valid_size = sizeof(*resp); | ||
142 | |||
143 | /** | ||
144 | * If the device fault bit is set in the status register, then | ||
145 | * set the sense data and return. | ||
146 | */ | ||
147 | if (d2h_reg_fis->status & ATA_DF) | ||
148 | ts->stat = SAS_PROTO_RESPONSE; | ||
149 | else | ||
150 | ts->stat = SAM_STAT_GOOD; | ||
151 | |||
152 | ts->resp = SAS_TASK_COMPLETE; | ||
153 | } | ||
154 | |||
155 | enum sci_status isci_sata_management_task_request_build(struct isci_request *ireq) | ||
156 | { | ||
157 | struct isci_tmf *isci_tmf; | ||
158 | enum sci_status status; | ||
159 | |||
160 | if (tmf_task != ireq->ttype) | ||
161 | return SCI_FAILURE; | ||
162 | |||
163 | isci_tmf = isci_request_access_tmf(ireq); | ||
164 | |||
165 | switch (isci_tmf->tmf_code) { | ||
166 | |||
167 | case isci_tmf_sata_srst_high: | ||
168 | case isci_tmf_sata_srst_low: { | ||
169 | struct host_to_dev_fis *fis = &ireq->stp.cmd; | ||
170 | |||
171 | memset(fis, 0, sizeof(*fis)); | ||
172 | |||
173 | fis->fis_type = 0x27; | ||
174 | fis->flags &= ~0x80; | ||
175 | fis->flags &= 0xF0; | ||
176 | if (isci_tmf->tmf_code == isci_tmf_sata_srst_high) | ||
177 | fis->control |= ATA_SRST; | ||
178 | else | ||
179 | fis->control &= ~ATA_SRST; | ||
180 | break; | ||
181 | } | ||
182 | /* other management commnd go here... */ | ||
183 | default: | ||
184 | return SCI_FAILURE; | ||
185 | } | ||
186 | |||
187 | /* core builds the protocol specific request | ||
188 | * based on the h2d fis. | ||
189 | */ | ||
190 | status = sci_task_request_construct_sata(ireq); | ||
191 | |||
192 | return status; | ||
193 | } | ||
194 | |||
195 | /** | ||
196 | * isci_task_send_lu_reset_sata() - This function is called by of the SAS | ||
197 | * Domain Template functions. This is one of the Task Management functoins | ||
198 | * called by libsas, to reset the given SAS lun. Note the assumption that | ||
199 | * while this call is executing, no I/O will be sent by the host to the | ||
200 | * device. | ||
201 | * @lun: This parameter specifies the lun to be reset. | ||
202 | * | ||
203 | * status, zero indicates success. | ||
204 | */ | ||
205 | int isci_task_send_lu_reset_sata( | ||
206 | struct isci_host *isci_host, | ||
207 | struct isci_remote_device *isci_device, | ||
208 | u8 *lun) | ||
209 | { | ||
210 | struct isci_tmf tmf; | ||
211 | int ret = TMF_RESP_FUNC_FAILED; | ||
212 | |||
213 | /* Send the soft reset to the target */ | ||
214 | #define ISCI_SRST_TIMEOUT_MS 25000 /* 25 second timeout. */ | ||
215 | isci_task_build_tmf(&tmf, isci_tmf_sata_srst_high, NULL, NULL); | ||
216 | |||
217 | ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, | ||
218 | ISCI_SRST_TIMEOUT_MS); | ||
219 | |||
220 | if (ret != TMF_RESP_FUNC_COMPLETE) { | ||
221 | dev_warn(&isci_host->pdev->dev, | ||
222 | "%s: Assert SRST failed (%p) = %x", | ||
223 | __func__, | ||
224 | isci_device, | ||
225 | ret); | ||
226 | |||
227 | /* Return the failure so that the LUN reset is escalated | ||
228 | * to a target reset. | ||
229 | */ | ||
230 | } | ||
231 | return ret; | ||
232 | } | ||