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6f231dda DW |
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 | ||
f2f30080 | 56 | #include <scsi/sas.h> |
6f231dda | 57 | #include "isci.h" |
88f3b62a | 58 | #include "remote_device.h" |
6f231dda DW |
59 | #include "scic_io_request.h" |
60 | #include "scic_task_request.h" | |
61 | #include "task.h" | |
62 | #include "request.h" | |
63 | #include "sata.h" | |
6f231dda DW |
64 | |
65 | /** | |
66 | * isci_sata_task_to_fis_copy() - This function gets the host_to_dev_fis from | |
67 | * the core and copies the fis from the task into it. | |
68 | * @task: This parameter is a pointer to the task struct from libsas. | |
69 | * | |
70 | * pointer to the host_to_dev_fis from the core request object. | |
71 | */ | |
72 | struct host_to_dev_fis *isci_sata_task_to_fis_copy(struct sas_task *task) | |
73 | { | |
b7645818 DW |
74 | struct isci_request *ireq = task->lldd_task; |
75 | struct host_to_dev_fis *fis = &ireq->sci_request_handle->stp.cmd; | |
76 | ||
77 | memcpy(fis, &task->ata_task.fis, sizeof(struct host_to_dev_fis)); | |
6f231dda DW |
78 | |
79 | if (!task->ata_task.device_control_reg_update) | |
b7645818 | 80 | fis->flags |= 0x80; |
6f231dda | 81 | |
b7645818 | 82 | fis->flags &= 0xF0; |
6f231dda | 83 | |
b7645818 | 84 | return fis; |
6f231dda DW |
85 | } |
86 | ||
87 | /** | |
88 | * isci_sata_is_task_ncq() - This function determines if the given stp task is | |
89 | * a ncq request. | |
90 | * @task: This parameter is a pointer to the task struct from libsas. | |
91 | * | |
92 | * true if the task is ncq | |
93 | */ | |
94 | bool isci_sata_is_task_ncq(struct sas_task *task) | |
95 | { | |
96 | struct ata_queued_cmd *qc = task->uldd_task; | |
97 | ||
98 | bool ret = (qc && | |
99 | (qc->tf.command == ATA_CMD_FPDMA_WRITE || | |
100 | qc->tf.command == ATA_CMD_FPDMA_READ)); | |
101 | ||
102 | return ret; | |
103 | } | |
104 | ||
105 | /** | |
106 | * isci_sata_set_ncq_tag() - This function sets the ncq tag field in the | |
107 | * host_to_dev_fis equal to the tag in the queue command in the task. | |
108 | * @task: This parameter is a pointer to the task struct from libsas. | |
109 | * @register_fis: This parameter is a pointer to the host_to_dev_fis from the | |
110 | * core request object. | |
111 | * | |
112 | */ | |
113 | void isci_sata_set_ncq_tag( | |
114 | struct host_to_dev_fis *register_fis, | |
115 | struct sas_task *task) | |
116 | { | |
117 | struct ata_queued_cmd *qc = task->uldd_task; | |
118 | struct isci_request *request = task->lldd_task; | |
119 | ||
120 | register_fis->sector_count = qc->tag << 3; | |
121 | scic_stp_io_request_set_ncq_tag(request->sci_request_handle, qc->tag); | |
122 | } | |
123 | ||
124 | /** | |
125 | * isci_request_process_stp_response() - This function sets the status and | |
126 | * response, in the task struct, from the request object for the upper layer | |
127 | * driver. | |
128 | * @sas_task: This parameter is the task struct from the upper layer driver. | |
129 | * @response_buffer: This parameter points to the response of the completed | |
130 | * request. | |
131 | * | |
132 | * none. | |
133 | */ | |
f2f30080 DJ |
134 | void isci_request_process_stp_response(struct sas_task *task, |
135 | void *response_buffer) | |
6f231dda | 136 | { |
f2f30080 | 137 | struct dev_to_host_fis *d2h_reg_fis = response_buffer; |
6f231dda DW |
138 | struct task_status_struct *ts = &task->task_status; |
139 | struct ata_task_resp *resp = (void *)&ts->buf[0]; | |
140 | ||
141 | resp->frame_len = le16_to_cpu(*(__le16 *)(response_buffer + 6)); | |
142 | memcpy(&resp->ending_fis[0], response_buffer + 16, 24); | |
143 | ts->buf_valid_size = sizeof(*resp); | |
144 | ||
145 | /** | |
146 | * If the device fault bit is set in the status register, then | |
147 | * set the sense data and return. | |
148 | */ | |
e76d6180 | 149 | if (d2h_reg_fis->status & ATA_DF) |
6f231dda DW |
150 | ts->stat = SAS_PROTO_RESPONSE; |
151 | else | |
152 | ts->stat = SAM_STAT_GOOD; | |
153 | ||
154 | ts->resp = SAS_TASK_COMPLETE; | |
155 | } | |
156 | ||
b7645818 | 157 | enum sci_status isci_sata_management_task_request_build(struct isci_request *ireq) |
6f231dda | 158 | { |
b7645818 | 159 | struct scic_sds_request *sci_req = ireq->sci_request_handle; |
6f231dda DW |
160 | struct isci_tmf *isci_tmf; |
161 | enum sci_status status; | |
162 | ||
b7645818 | 163 | if (tmf_task != ireq->ttype) |
6f231dda DW |
164 | return SCI_FAILURE; |
165 | ||
b7645818 | 166 | isci_tmf = isci_request_access_tmf(ireq); |
6f231dda DW |
167 | |
168 | switch (isci_tmf->tmf_code) { | |
169 | ||
170 | case isci_tmf_sata_srst_high: | |
b7645818 DW |
171 | case isci_tmf_sata_srst_low: { |
172 | struct host_to_dev_fis *fis = &sci_req->stp.cmd; | |
173 | ||
174 | memset(fis, 0, sizeof(*fis)); | |
175 | ||
176 | fis->fis_type = 0x27; | |
177 | fis->flags &= ~0x80; | |
178 | fis->flags &= 0xF0; | |
6f231dda | 179 | if (isci_tmf->tmf_code == isci_tmf_sata_srst_high) |
b7645818 | 180 | fis->control |= ATA_SRST; |
6f231dda | 181 | else |
b7645818 | 182 | fis->control &= ~ATA_SRST; |
6f231dda DW |
183 | break; |
184 | } | |
185 | /* other management commnd go here... */ | |
186 | default: | |
187 | return SCI_FAILURE; | |
188 | } | |
189 | ||
190 | /* core builds the protocol specific request | |
191 | * based on the h2d fis. | |
192 | */ | |
193 | status = scic_task_request_construct_sata( | |
b7645818 | 194 | ireq->sci_request_handle |
6f231dda DW |
195 | ); |
196 | ||
197 | return status; | |
198 | } | |
199 | ||
200 | /** | |
201 | * isci_task_send_lu_reset_sata() - This function is called by of the SAS | |
202 | * Domain Template functions. This is one of the Task Management functoins | |
203 | * called by libsas, to reset the given SAS lun. Note the assumption that | |
204 | * while this call is executing, no I/O will be sent by the host to the | |
205 | * device. | |
206 | * @lun: This parameter specifies the lun to be reset. | |
207 | * | |
208 | * status, zero indicates success. | |
209 | */ | |
210 | int isci_task_send_lu_reset_sata( | |
211 | struct isci_host *isci_host, | |
212 | struct isci_remote_device *isci_device, | |
213 | u8 *lun) | |
214 | { | |
215 | struct isci_tmf tmf; | |
216 | int ret = TMF_RESP_FUNC_FAILED; | |
6f231dda | 217 | |
26e953bc JS |
218 | /* Send the soft reset to the target */ |
219 | #define ISCI_SRST_TIMEOUT_MS 25000 /* 25 second timeout. */ | |
6f231dda DW |
220 | isci_task_build_tmf(&tmf, isci_device, isci_tmf_sata_srst_high, |
221 | NULL, NULL | |
222 | ); | |
223 | ||
224 | ret = isci_task_execute_tmf(isci_host, &tmf, ISCI_SRST_TIMEOUT_MS); | |
225 | ||
226 | if (ret != TMF_RESP_FUNC_COMPLETE) { | |
227 | dev_warn(&isci_host->pdev->dev, | |
228 | "%s: Assert SRST failed (%p) = %x", | |
229 | __func__, | |
230 | isci_device, | |
231 | ret); | |
232 | ||
233 | /* Return the failure so that the LUN reset is escalated | |
234 | * to a target reset. | |
235 | */ | |
6f231dda | 236 | } |
6f231dda DW |
237 | return ret; |
238 | } |