root / hw / scsi-generic.c @ 072c2c31
History | View | Annotate | Download (14.7 kB)
1 | 2cc977e2 | ths | /*
|
---|---|---|---|
2 | 2cc977e2 | ths | * Generic SCSI Device support
|
3 | 2cc977e2 | ths | *
|
4 | 2cc977e2 | ths | * Copyright (c) 2007 Bull S.A.S.
|
5 | 2cc977e2 | ths | * Based on code by Paul Brook
|
6 | 2cc977e2 | ths | * Based on code by Fabrice Bellard
|
7 | 2cc977e2 | ths | *
|
8 | 2cc977e2 | ths | * Written by Laurent Vivier <Laurent.Vivier@bull.net>
|
9 | 2cc977e2 | ths | *
|
10 | 2cc977e2 | ths | * This code is licenced under the LGPL.
|
11 | 2cc977e2 | ths | *
|
12 | 2cc977e2 | ths | */
|
13 | 2cc977e2 | ths | |
14 | 2cc977e2 | ths | #include "qemu-common.h" |
15 | 2f792016 | Markus Armbruster | #include "qemu-error.h" |
16 | 43b443b6 | Gerd Hoffmann | #include "scsi.h" |
17 | 2cc977e2 | ths | |
18 | d52affa7 | Gerd Hoffmann | #ifdef __linux__
|
19 | 2cc977e2 | ths | |
20 | 2cc977e2 | ths | //#define DEBUG_SCSI
|
21 | 2cc977e2 | ths | |
22 | 2cc977e2 | ths | #ifdef DEBUG_SCSI
|
23 | 001faf32 | Blue Swirl | #define DPRINTF(fmt, ...) \
|
24 | 001faf32 | Blue Swirl | do { printf("scsi-generic: " fmt , ## __VA_ARGS__); } while (0) |
25 | 2cc977e2 | ths | #else
|
26 | 001faf32 | Blue Swirl | #define DPRINTF(fmt, ...) do {} while(0) |
27 | 2cc977e2 | ths | #endif
|
28 | 2cc977e2 | ths | |
29 | 001faf32 | Blue Swirl | #define BADF(fmt, ...) \
|
30 | 001faf32 | Blue Swirl | do { fprintf(stderr, "scsi-generic: " fmt , ## __VA_ARGS__); } while (0) |
31 | 2cc977e2 | ths | |
32 | 2cc977e2 | ths | #include <stdio.h> |
33 | 2cc977e2 | ths | #include <sys/types.h> |
34 | 2cc977e2 | ths | #include <sys/stat.h> |
35 | 2cc977e2 | ths | #include <unistd.h> |
36 | 2cc977e2 | ths | #include <scsi/sg.h> |
37 | 0d65e1f8 | Gerd Hoffmann | #include "scsi-defs.h" |
38 | 2cc977e2 | ths | |
39 | a9dd6843 | aliguori | #define SCSI_SENSE_BUF_SIZE 96 |
40 | 2cc977e2 | ths | |
41 | 2cc977e2 | ths | #define SG_ERR_DRIVER_TIMEOUT 0x06 |
42 | 2cc977e2 | ths | #define SG_ERR_DRIVER_SENSE 0x08 |
43 | 2cc977e2 | ths | |
44 | 2cc977e2 | ths | #ifndef MAX_UINT
|
45 | 2cc977e2 | ths | #define MAX_UINT ((unsigned int)-1) |
46 | 2cc977e2 | ths | #endif
|
47 | 2cc977e2 | ths | |
48 | d52affa7 | Gerd Hoffmann | typedef struct SCSIGenericState SCSIGenericState; |
49 | d52affa7 | Gerd Hoffmann | |
50 | 4c41d2ef | Gerd Hoffmann | typedef struct SCSIGenericReq { |
51 | 4c41d2ef | Gerd Hoffmann | SCSIRequest req; |
52 | 2cc977e2 | ths | uint8_t *buf; |
53 | 2cc977e2 | ths | int buflen;
|
54 | 2cc977e2 | ths | int len;
|
55 | 2cc977e2 | ths | sg_io_hdr_t io_header; |
56 | 4c41d2ef | Gerd Hoffmann | } SCSIGenericReq; |
57 | 2cc977e2 | ths | |
58 | d52affa7 | Gerd Hoffmann | struct SCSIGenericState
|
59 | 2cc977e2 | ths | { |
60 | d52affa7 | Gerd Hoffmann | SCSIDevice qdev; |
61 | 428c149b | Christoph Hellwig | BlockDriverState *bs; |
62 | 2cc977e2 | ths | int lun;
|
63 | 2cc977e2 | ths | int driver_status;
|
64 | 2cc977e2 | ths | uint8_t sensebuf[SCSI_SENSE_BUF_SIZE]; |
65 | 89c0f643 | aurel32 | uint8_t senselen; |
66 | 2cc977e2 | ths | }; |
67 | 2cc977e2 | ths | |
68 | 89b08ae1 | Gerd Hoffmann | static SCSIGenericReq *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun)
|
69 | 2cc977e2 | ths | { |
70 | 89b08ae1 | Gerd Hoffmann | SCSIRequest *req; |
71 | 2cc977e2 | ths | |
72 | 89b08ae1 | Gerd Hoffmann | req = scsi_req_alloc(sizeof(SCSIGenericReq), d, tag, lun);
|
73 | 89b08ae1 | Gerd Hoffmann | return DO_UPCAST(SCSIGenericReq, req, req);
|
74 | 2cc977e2 | ths | } |
75 | 2cc977e2 | ths | |
76 | 4c41d2ef | Gerd Hoffmann | static void scsi_remove_request(SCSIGenericReq *r) |
77 | 2cc977e2 | ths | { |
78 | 9af99d98 | Gerd Hoffmann | qemu_free(r->buf); |
79 | 89b08ae1 | Gerd Hoffmann | scsi_req_free(&r->req); |
80 | 2cc977e2 | ths | } |
81 | 2cc977e2 | ths | |
82 | 4c41d2ef | Gerd Hoffmann | static SCSIGenericReq *scsi_find_request(SCSIGenericState *s, uint32_t tag)
|
83 | 2cc977e2 | ths | { |
84 | 89b08ae1 | Gerd Hoffmann | return DO_UPCAST(SCSIGenericReq, req, scsi_req_find(&s->qdev, tag));
|
85 | 2cc977e2 | ths | } |
86 | 2cc977e2 | ths | |
87 | 2cc977e2 | ths | /* Helper function for command completion. */
|
88 | 2cc977e2 | ths | static void scsi_command_complete(void *opaque, int ret) |
89 | 2cc977e2 | ths | { |
90 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
91 | 4c41d2ef | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
92 | 2cc977e2 | ths | |
93 | 2cc977e2 | ths | s->driver_status = r->io_header.driver_status; |
94 | 89c0f643 | aurel32 | if (s->driver_status & SG_ERR_DRIVER_SENSE)
|
95 | 89c0f643 | aurel32 | s->senselen = r->io_header.sb_len_wr; |
96 | 89c0f643 | aurel32 | |
97 | 2cc977e2 | ths | if (ret != 0) |
98 | ed3a34a3 | Gerd Hoffmann | r->req.status = BUSY << 1;
|
99 | 2cc977e2 | ths | else {
|
100 | 2cc977e2 | ths | if (s->driver_status & SG_ERR_DRIVER_TIMEOUT) {
|
101 | ed3a34a3 | Gerd Hoffmann | r->req.status = BUSY << 1;
|
102 | 2cc977e2 | ths | BADF("Driver Timeout\n");
|
103 | 89c0f643 | aurel32 | } else if (r->io_header.status) |
104 | ed3a34a3 | Gerd Hoffmann | r->req.status = r->io_header.status; |
105 | 89c0f643 | aurel32 | else if (s->driver_status & SG_ERR_DRIVER_SENSE) |
106 | ed3a34a3 | Gerd Hoffmann | r->req.status = CHECK_CONDITION << 1;
|
107 | 2cc977e2 | ths | else
|
108 | ed3a34a3 | Gerd Hoffmann | r->req.status = GOOD << 1;
|
109 | 2cc977e2 | ths | } |
110 | 89c0f643 | aurel32 | DPRINTF("Command complete 0x%p tag=0x%x status=%d\n",
|
111 | ed3a34a3 | Gerd Hoffmann | r, r->req.tag, r->req.status); |
112 | ed3a34a3 | Gerd Hoffmann | |
113 | ed3a34a3 | Gerd Hoffmann | scsi_req_complete(&r->req); |
114 | 89b08ae1 | Gerd Hoffmann | scsi_remove_request(r); |
115 | 2cc977e2 | ths | } |
116 | 2cc977e2 | ths | |
117 | 2cc977e2 | ths | /* Cancel a pending data transfer. */
|
118 | 2cc977e2 | ths | static void scsi_cancel_io(SCSIDevice *d, uint32_t tag) |
119 | 2cc977e2 | ths | { |
120 | 2cc977e2 | ths | DPRINTF("scsi_cancel_io 0x%x\n", tag);
|
121 | d52affa7 | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
122 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r; |
123 | 2cc977e2 | ths | DPRINTF("Cancel tag=0x%x\n", tag);
|
124 | 2cc977e2 | ths | r = scsi_find_request(s, tag); |
125 | 2cc977e2 | ths | if (r) {
|
126 | 4c41d2ef | Gerd Hoffmann | if (r->req.aiocb)
|
127 | 4c41d2ef | Gerd Hoffmann | bdrv_aio_cancel(r->req.aiocb); |
128 | 4c41d2ef | Gerd Hoffmann | r->req.aiocb = NULL;
|
129 | 2cc977e2 | ths | scsi_remove_request(r); |
130 | 2cc977e2 | ths | } |
131 | 2cc977e2 | ths | } |
132 | 2cc977e2 | ths | |
133 | 2cc977e2 | ths | static int execute_command(BlockDriverState *bdrv, |
134 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r, int direction,
|
135 | 2cc977e2 | ths | BlockDriverCompletionFunc *complete) |
136 | 2cc977e2 | ths | { |
137 | 4c41d2ef | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
138 | 4c41d2ef | Gerd Hoffmann | |
139 | 2cc977e2 | ths | r->io_header.interface_id = 'S';
|
140 | 2cc977e2 | ths | r->io_header.dxfer_direction = direction; |
141 | 2cc977e2 | ths | r->io_header.dxferp = r->buf; |
142 | 2cc977e2 | ths | r->io_header.dxfer_len = r->buflen; |
143 | 29362ebe | Gerd Hoffmann | r->io_header.cmdp = r->req.cmd.buf; |
144 | 29362ebe | Gerd Hoffmann | r->io_header.cmd_len = r->req.cmd.len; |
145 | 4c41d2ef | Gerd Hoffmann | r->io_header.mx_sb_len = sizeof(s->sensebuf);
|
146 | 4c41d2ef | Gerd Hoffmann | r->io_header.sbp = s->sensebuf; |
147 | 2cc977e2 | ths | r->io_header.timeout = MAX_UINT; |
148 | 2cc977e2 | ths | r->io_header.usr_ptr = r; |
149 | 2cc977e2 | ths | r->io_header.flags |= SG_FLAG_DIRECT_IO; |
150 | 2cc977e2 | ths | |
151 | 4c41d2ef | Gerd Hoffmann | r->req.aiocb = bdrv_aio_ioctl(bdrv, SG_IO, &r->io_header, complete, r); |
152 | 4c41d2ef | Gerd Hoffmann | if (r->req.aiocb == NULL) { |
153 | 2cc977e2 | ths | BADF("execute_command: read failed !\n");
|
154 | 2cc977e2 | ths | return -1; |
155 | 2cc977e2 | ths | } |
156 | 2cc977e2 | ths | |
157 | 2cc977e2 | ths | return 0; |
158 | 2cc977e2 | ths | } |
159 | 2cc977e2 | ths | |
160 | 2cc977e2 | ths | static void scsi_read_complete(void * opaque, int ret) |
161 | 2cc977e2 | ths | { |
162 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
163 | 2cc977e2 | ths | int len;
|
164 | 2cc977e2 | ths | |
165 | 2cc977e2 | ths | if (ret) {
|
166 | 2cc977e2 | ths | DPRINTF("IO error\n");
|
167 | 2cc977e2 | ths | scsi_command_complete(r, ret); |
168 | 2cc977e2 | ths | return;
|
169 | 2cc977e2 | ths | } |
170 | 2cc977e2 | ths | len = r->io_header.dxfer_len - r->io_header.resid; |
171 | 4c41d2ef | Gerd Hoffmann | DPRINTF("Data ready tag=0x%x len=%d\n", r->req.tag, len);
|
172 | 2cc977e2 | ths | |
173 | 2cc977e2 | ths | r->len = -1;
|
174 | 4c41d2ef | Gerd Hoffmann | r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, len); |
175 | 89c0f643 | aurel32 | if (len == 0) |
176 | 89c0f643 | aurel32 | scsi_command_complete(r, 0);
|
177 | 2cc977e2 | ths | } |
178 | 2cc977e2 | ths | |
179 | 2cc977e2 | ths | /* Read more data from scsi device into buffer. */
|
180 | 2cc977e2 | ths | static void scsi_read_data(SCSIDevice *d, uint32_t tag) |
181 | 2cc977e2 | ths | { |
182 | d52affa7 | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
183 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r; |
184 | 2cc977e2 | ths | int ret;
|
185 | 2cc977e2 | ths | |
186 | 2cc977e2 | ths | DPRINTF("scsi_read_data 0x%x\n", tag);
|
187 | 2cc977e2 | ths | r = scsi_find_request(s, tag); |
188 | 2cc977e2 | ths | if (!r) {
|
189 | 2cc977e2 | ths | BADF("Bad read tag 0x%x\n", tag);
|
190 | 2cc977e2 | ths | /* ??? This is the wrong error. */
|
191 | 2cc977e2 | ths | scsi_command_complete(r, -EINVAL); |
192 | 2cc977e2 | ths | return;
|
193 | 2cc977e2 | ths | } |
194 | 2cc977e2 | ths | |
195 | 2cc977e2 | ths | if (r->len == -1) { |
196 | 2cc977e2 | ths | scsi_command_complete(r, 0);
|
197 | 2cc977e2 | ths | return;
|
198 | 2cc977e2 | ths | } |
199 | 2cc977e2 | ths | |
200 | 29362ebe | Gerd Hoffmann | if (r->req.cmd.buf[0] == REQUEST_SENSE && s->driver_status & SG_ERR_DRIVER_SENSE) |
201 | 2cc977e2 | ths | { |
202 | 89c0f643 | aurel32 | s->senselen = MIN(r->len, s->senselen); |
203 | 89c0f643 | aurel32 | memcpy(r->buf, s->sensebuf, s->senselen); |
204 | 2cc977e2 | ths | r->io_header.driver_status = 0;
|
205 | 89c0f643 | aurel32 | r->io_header.status = 0;
|
206 | 89c0f643 | aurel32 | r->io_header.dxfer_len = s->senselen; |
207 | 2cc977e2 | ths | r->len = -1;
|
208 | 4c41d2ef | Gerd Hoffmann | DPRINTF("Data ready tag=0x%x len=%d\n", r->req.tag, s->senselen);
|
209 | a9dd6843 | aliguori | DPRINTF("Sense: %d %d %d %d %d %d %d %d\n",
|
210 | a9dd6843 | aliguori | r->buf[0], r->buf[1], r->buf[2], r->buf[3], |
211 | a9dd6843 | aliguori | r->buf[4], r->buf[5], r->buf[6], r->buf[7]); |
212 | 4c41d2ef | Gerd Hoffmann | r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, s->senselen); |
213 | 2cc977e2 | ths | return;
|
214 | 2cc977e2 | ths | } |
215 | 2cc977e2 | ths | |
216 | 428c149b | Christoph Hellwig | ret = execute_command(s->bs, r, SG_DXFER_FROM_DEV, scsi_read_complete); |
217 | 2cc977e2 | ths | if (ret == -1) { |
218 | 2cc977e2 | ths | scsi_command_complete(r, -EINVAL); |
219 | 2cc977e2 | ths | return;
|
220 | 2cc977e2 | ths | } |
221 | 2cc977e2 | ths | } |
222 | 2cc977e2 | ths | |
223 | 2cc977e2 | ths | static void scsi_write_complete(void * opaque, int ret) |
224 | 2cc977e2 | ths | { |
225 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r = (SCSIGenericReq *)opaque; |
226 | 4c41d2ef | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev); |
227 | 2cc977e2 | ths | |
228 | 2cc977e2 | ths | DPRINTF("scsi_write_complete() ret = %d\n", ret);
|
229 | 2cc977e2 | ths | if (ret) {
|
230 | 2cc977e2 | ths | DPRINTF("IO error\n");
|
231 | 2cc977e2 | ths | scsi_command_complete(r, ret); |
232 | 2cc977e2 | ths | return;
|
233 | 2cc977e2 | ths | } |
234 | 2cc977e2 | ths | |
235 | 29362ebe | Gerd Hoffmann | if (r->req.cmd.buf[0] == MODE_SELECT && r->req.cmd.buf[4] == 12 && |
236 | 91376656 | Gerd Hoffmann | s->qdev.type == TYPE_TAPE) { |
237 | b07995e3 | Gerd Hoffmann | s->qdev.blocksize = (r->buf[9] << 16) | (r->buf[10] << 8) | r->buf[11]; |
238 | 4c41d2ef | Gerd Hoffmann | DPRINTF("block size %d\n", s->blocksize);
|
239 | 89c0f643 | aurel32 | } |
240 | 89c0f643 | aurel32 | |
241 | 2cc977e2 | ths | scsi_command_complete(r, ret); |
242 | 2cc977e2 | ths | } |
243 | 2cc977e2 | ths | |
244 | 2cc977e2 | ths | /* Write data to a scsi device. Returns nonzero on failure.
|
245 | 2cc977e2 | ths | The transfer may complete asynchronously. */
|
246 | 2cc977e2 | ths | static int scsi_write_data(SCSIDevice *d, uint32_t tag) |
247 | 2cc977e2 | ths | { |
248 | d52affa7 | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
249 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r; |
250 | 2cc977e2 | ths | int ret;
|
251 | 2cc977e2 | ths | |
252 | 2cc977e2 | ths | DPRINTF("scsi_write_data 0x%x\n", tag);
|
253 | 2cc977e2 | ths | r = scsi_find_request(s, tag); |
254 | 2cc977e2 | ths | if (!r) {
|
255 | 2cc977e2 | ths | BADF("Bad write tag 0x%x\n", tag);
|
256 | 2cc977e2 | ths | /* ??? This is the wrong error. */
|
257 | 2cc977e2 | ths | scsi_command_complete(r, -EINVAL); |
258 | 2cc977e2 | ths | return 0; |
259 | 2cc977e2 | ths | } |
260 | 2cc977e2 | ths | |
261 | 2cc977e2 | ths | if (r->len == 0) { |
262 | 2cc977e2 | ths | r->len = r->buflen; |
263 | 4c41d2ef | Gerd Hoffmann | r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, r->len); |
264 | 2cc977e2 | ths | return 0; |
265 | 2cc977e2 | ths | } |
266 | 2cc977e2 | ths | |
267 | 428c149b | Christoph Hellwig | ret = execute_command(s->bs, r, SG_DXFER_TO_DEV, scsi_write_complete); |
268 | 2cc977e2 | ths | if (ret == -1) { |
269 | 2cc977e2 | ths | scsi_command_complete(r, -EINVAL); |
270 | 2cc977e2 | ths | return 1; |
271 | 2cc977e2 | ths | } |
272 | 2cc977e2 | ths | |
273 | 2cc977e2 | ths | return 0; |
274 | 2cc977e2 | ths | } |
275 | 2cc977e2 | ths | |
276 | 2cc977e2 | ths | /* Return a pointer to the data buffer. */
|
277 | 2cc977e2 | ths | static uint8_t *scsi_get_buf(SCSIDevice *d, uint32_t tag)
|
278 | 2cc977e2 | ths | { |
279 | d52affa7 | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
280 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r; |
281 | 2cc977e2 | ths | r = scsi_find_request(s, tag); |
282 | 2cc977e2 | ths | if (!r) {
|
283 | 2cc977e2 | ths | BADF("Bad buffer tag 0x%x\n", tag);
|
284 | 2cc977e2 | ths | return NULL; |
285 | 2cc977e2 | ths | } |
286 | 2cc977e2 | ths | return r->buf;
|
287 | 2cc977e2 | ths | } |
288 | 2cc977e2 | ths | |
289 | 2ec749cb | Gerd Hoffmann | static void scsi_req_fixup(SCSIRequest *req) |
290 | 2cc977e2 | ths | { |
291 | 2ec749cb | Gerd Hoffmann | switch(req->cmd.buf[0]) { |
292 | 2cc977e2 | ths | case WRITE_10:
|
293 | 2ec749cb | Gerd Hoffmann | req->cmd.buf[1] &= ~0x08; /* disable FUA */ |
294 | 2cc977e2 | ths | break;
|
295 | 2cc977e2 | ths | case READ_10:
|
296 | 2ec749cb | Gerd Hoffmann | req->cmd.buf[1] &= ~0x08; /* disable FUA */ |
297 | a9dd6843 | aliguori | break;
|
298 | a9dd6843 | aliguori | case REWIND:
|
299 | a9dd6843 | aliguori | case START_STOP:
|
300 | 2ec749cb | Gerd Hoffmann | if (req->dev->type == TYPE_TAPE) {
|
301 | 2ec749cb | Gerd Hoffmann | /* force IMMED, otherwise qemu waits end of command */
|
302 | 2ec749cb | Gerd Hoffmann | req->cmd.buf[1] = 0x01; |
303 | 2ec749cb | Gerd Hoffmann | } |
304 | a9dd6843 | aliguori | break;
|
305 | a9dd6843 | aliguori | } |
306 | a9dd6843 | aliguori | } |
307 | a9dd6843 | aliguori | |
308 | 2cc977e2 | ths | /* Execute a scsi command. Returns the length of the data expected by the
|
309 | 2cc977e2 | ths | command. This will be Positive for data transfers from the device
|
310 | 2cc977e2 | ths | (eg. disk reads), negative for transfers to the device (eg. disk writes),
|
311 | 2cc977e2 | ths | and zero if the command does not transfer any data. */
|
312 | 2cc977e2 | ths | |
313 | 2cc977e2 | ths | static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
|
314 | 2cc977e2 | ths | uint8_t *cmd, int lun)
|
315 | 2cc977e2 | ths | { |
316 | d52affa7 | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
317 | 4c41d2ef | Gerd Hoffmann | SCSIGenericReq *r; |
318 | d52affa7 | Gerd Hoffmann | SCSIBus *bus; |
319 | 2cc977e2 | ths | int ret;
|
320 | 2cc977e2 | ths | |
321 | 89c0f643 | aurel32 | if (cmd[0] != REQUEST_SENSE && |
322 | 89c0f643 | aurel32 | (lun != s->lun || (cmd[1] >> 5) != s->lun)) { |
323 | 89c0f643 | aurel32 | DPRINTF("Unimplemented LUN %d\n", lun ? lun : cmd[1] >> 5); |
324 | 89c0f643 | aurel32 | |
325 | 89c0f643 | aurel32 | s->sensebuf[0] = 0x70; |
326 | 89c0f643 | aurel32 | s->sensebuf[1] = 0x00; |
327 | 89c0f643 | aurel32 | s->sensebuf[2] = ILLEGAL_REQUEST;
|
328 | 89c0f643 | aurel32 | s->sensebuf[3] = 0x00; |
329 | 89c0f643 | aurel32 | s->sensebuf[4] = 0x00; |
330 | 89c0f643 | aurel32 | s->sensebuf[5] = 0x00; |
331 | 89c0f643 | aurel32 | s->sensebuf[6] = 0x00; |
332 | 89c0f643 | aurel32 | s->senselen = 7;
|
333 | 89c0f643 | aurel32 | s->driver_status = SG_ERR_DRIVER_SENSE; |
334 | d52affa7 | Gerd Hoffmann | bus = scsi_bus_from_device(d); |
335 | d52affa7 | Gerd Hoffmann | bus->complete(bus, SCSI_REASON_DONE, tag, CHECK_CONDITION << 1);
|
336 | 89c0f643 | aurel32 | return 0; |
337 | 89c0f643 | aurel32 | } |
338 | 89c0f643 | aurel32 | |
339 | 2cc977e2 | ths | r = scsi_find_request(s, tag); |
340 | 2cc977e2 | ths | if (r) {
|
341 | 2cc977e2 | ths | BADF("Tag 0x%x already in use %p\n", tag, r);
|
342 | 2cc977e2 | ths | scsi_cancel_io(d, tag); |
343 | 2cc977e2 | ths | } |
344 | 89b08ae1 | Gerd Hoffmann | r = scsi_new_request(d, tag, lun); |
345 | 2cc977e2 | ths | |
346 | 2ec749cb | Gerd Hoffmann | if (-1 == scsi_req_parse(&r->req, cmd)) { |
347 | 2ec749cb | Gerd Hoffmann | BADF("Unsupported command length, command %x\n", cmd[0]); |
348 | 2ec749cb | Gerd Hoffmann | scsi_remove_request(r); |
349 | 2ec749cb | Gerd Hoffmann | return 0; |
350 | 2ec749cb | Gerd Hoffmann | } |
351 | 2ec749cb | Gerd Hoffmann | scsi_req_fixup(&r->req); |
352 | 2ec749cb | Gerd Hoffmann | |
353 | 2ec749cb | Gerd Hoffmann | DPRINTF("Command: lun=%d tag=0x%x data=0x%02x len %d\n", lun, tag,
|
354 | 2ec749cb | Gerd Hoffmann | cmd[0], r->req.cmd.xfer);
|
355 | 2cc977e2 | ths | |
356 | 2ec749cb | Gerd Hoffmann | if (r->req.cmd.xfer == 0) { |
357 | 2cc977e2 | ths | if (r->buf != NULL) |
358 | e3c916e6 | Jean-Christophe DUBOIS | qemu_free(r->buf); |
359 | 2cc977e2 | ths | r->buflen = 0;
|
360 | 2cc977e2 | ths | r->buf = NULL;
|
361 | 428c149b | Christoph Hellwig | ret = execute_command(s->bs, r, SG_DXFER_NONE, scsi_command_complete); |
362 | 2cc977e2 | ths | if (ret == -1) { |
363 | 2cc977e2 | ths | scsi_command_complete(r, -EINVAL); |
364 | 2cc977e2 | ths | return 0; |
365 | 2cc977e2 | ths | } |
366 | 2cc977e2 | ths | return 0; |
367 | 2cc977e2 | ths | } |
368 | 2cc977e2 | ths | |
369 | 2ec749cb | Gerd Hoffmann | if (r->buflen != r->req.cmd.xfer) {
|
370 | 2cc977e2 | ths | if (r->buf != NULL) |
371 | e3c916e6 | Jean-Christophe DUBOIS | qemu_free(r->buf); |
372 | 2ec749cb | Gerd Hoffmann | r->buf = qemu_malloc(r->req.cmd.xfer); |
373 | 2ec749cb | Gerd Hoffmann | r->buflen = r->req.cmd.xfer; |
374 | 2cc977e2 | ths | } |
375 | 2cc977e2 | ths | |
376 | 2cc977e2 | ths | memset(r->buf, 0, r->buflen);
|
377 | 2ec749cb | Gerd Hoffmann | r->len = r->req.cmd.xfer; |
378 | 97a06435 | Gerd Hoffmann | if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
379 | 2cc977e2 | ths | r->len = 0;
|
380 | 2ec749cb | Gerd Hoffmann | return -r->req.cmd.xfer;
|
381 | 2cc977e2 | ths | } |
382 | 2cc977e2 | ths | |
383 | 2ec749cb | Gerd Hoffmann | return r->req.cmd.xfer;
|
384 | 2cc977e2 | ths | } |
385 | 2cc977e2 | ths | |
386 | 2cc977e2 | ths | static int get_blocksize(BlockDriverState *bdrv) |
387 | 2cc977e2 | ths | { |
388 | 2cc977e2 | ths | uint8_t cmd[10];
|
389 | 2cc977e2 | ths | uint8_t buf[8];
|
390 | 2cc977e2 | ths | uint8_t sensebuf[8];
|
391 | 2cc977e2 | ths | sg_io_hdr_t io_header; |
392 | 2cc977e2 | ths | int ret;
|
393 | 2cc977e2 | ths | |
394 | 4f26a486 | aliguori | memset(cmd, 0, sizeof(cmd)); |
395 | 4f26a486 | aliguori | memset(buf, 0, sizeof(buf)); |
396 | 2cc977e2 | ths | cmd[0] = READ_CAPACITY;
|
397 | 2cc977e2 | ths | |
398 | 2cc977e2 | ths | memset(&io_header, 0, sizeof(io_header)); |
399 | 2cc977e2 | ths | io_header.interface_id = 'S';
|
400 | 2cc977e2 | ths | io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
401 | 2cc977e2 | ths | io_header.dxfer_len = sizeof(buf);
|
402 | 2cc977e2 | ths | io_header.dxferp = buf; |
403 | 2cc977e2 | ths | io_header.cmdp = cmd; |
404 | 2cc977e2 | ths | io_header.cmd_len = sizeof(cmd);
|
405 | 2cc977e2 | ths | io_header.mx_sb_len = sizeof(sensebuf);
|
406 | 2cc977e2 | ths | io_header.sbp = sensebuf; |
407 | 2cc977e2 | ths | io_header.timeout = 6000; /* XXX */ |
408 | 2cc977e2 | ths | |
409 | 221f715d | aliguori | ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
410 | 7d780669 | aliguori | if (ret < 0) |
411 | 2cc977e2 | ths | return -1; |
412 | 2cc977e2 | ths | |
413 | 2cc977e2 | ths | return (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7]; |
414 | 2cc977e2 | ths | } |
415 | 2cc977e2 | ths | |
416 | 89c0f643 | aurel32 | static int get_stream_blocksize(BlockDriverState *bdrv) |
417 | 89c0f643 | aurel32 | { |
418 | 89c0f643 | aurel32 | uint8_t cmd[6];
|
419 | 89c0f643 | aurel32 | uint8_t buf[12];
|
420 | 89c0f643 | aurel32 | uint8_t sensebuf[8];
|
421 | 89c0f643 | aurel32 | sg_io_hdr_t io_header; |
422 | 89c0f643 | aurel32 | int ret;
|
423 | 89c0f643 | aurel32 | |
424 | 89c0f643 | aurel32 | memset(cmd, 0, sizeof(cmd)); |
425 | 89c0f643 | aurel32 | memset(buf, 0, sizeof(buf)); |
426 | 89c0f643 | aurel32 | cmd[0] = MODE_SENSE;
|
427 | 89c0f643 | aurel32 | cmd[4] = sizeof(buf); |
428 | 89c0f643 | aurel32 | |
429 | 89c0f643 | aurel32 | memset(&io_header, 0, sizeof(io_header)); |
430 | 89c0f643 | aurel32 | io_header.interface_id = 'S';
|
431 | 89c0f643 | aurel32 | io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
432 | 89c0f643 | aurel32 | io_header.dxfer_len = sizeof(buf);
|
433 | 89c0f643 | aurel32 | io_header.dxferp = buf; |
434 | 89c0f643 | aurel32 | io_header.cmdp = cmd; |
435 | 89c0f643 | aurel32 | io_header.cmd_len = sizeof(cmd);
|
436 | 89c0f643 | aurel32 | io_header.mx_sb_len = sizeof(sensebuf);
|
437 | 89c0f643 | aurel32 | io_header.sbp = sensebuf; |
438 | 89c0f643 | aurel32 | io_header.timeout = 6000; /* XXX */ |
439 | 89c0f643 | aurel32 | |
440 | 221f715d | aliguori | ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
441 | 7d780669 | aliguori | if (ret < 0) |
442 | 89c0f643 | aurel32 | return -1; |
443 | 89c0f643 | aurel32 | |
444 | 89c0f643 | aurel32 | return (buf[9] << 16) | (buf[10] << 8) | buf[11]; |
445 | 89c0f643 | aurel32 | } |
446 | 89c0f643 | aurel32 | |
447 | 2cc977e2 | ths | static void scsi_destroy(SCSIDevice *d) |
448 | 2cc977e2 | ths | { |
449 | d52affa7 | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d); |
450 | 9af99d98 | Gerd Hoffmann | SCSIGenericReq *r; |
451 | 2cc977e2 | ths | |
452 | 9af99d98 | Gerd Hoffmann | while (!QTAILQ_EMPTY(&s->qdev.requests)) {
|
453 | 9af99d98 | Gerd Hoffmann | r = DO_UPCAST(SCSIGenericReq, req, QTAILQ_FIRST(&s->qdev.requests)); |
454 | 9af99d98 | Gerd Hoffmann | scsi_remove_request(r); |
455 | 2cc977e2 | ths | } |
456 | 428c149b | Christoph Hellwig | drive_uninit(s->qdev.conf.dinfo); |
457 | 2cc977e2 | ths | } |
458 | 2cc977e2 | ths | |
459 | d52affa7 | Gerd Hoffmann | static int scsi_generic_initfn(SCSIDevice *dev) |
460 | 2cc977e2 | ths | { |
461 | d52affa7 | Gerd Hoffmann | SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, dev); |
462 | 2cc977e2 | ths | int sg_version;
|
463 | 2cc977e2 | ths | struct sg_scsi_id scsiid;
|
464 | 2cc977e2 | ths | |
465 | 428c149b | Christoph Hellwig | if (!s->qdev.conf.dinfo || !s->qdev.conf.dinfo->bdrv) {
|
466 | 1ecda02b | Markus Armbruster | error_report("scsi-generic: drive property not set");
|
467 | d52affa7 | Gerd Hoffmann | return -1; |
468 | d52affa7 | Gerd Hoffmann | } |
469 | 428c149b | Christoph Hellwig | s->bs = s->qdev.conf.dinfo->bdrv; |
470 | 2cc977e2 | ths | |
471 | d52affa7 | Gerd Hoffmann | /* check we are really using a /dev/sg* file */
|
472 | 428c149b | Christoph Hellwig | if (!bdrv_is_sg(s->bs)) {
|
473 | 1ecda02b | Markus Armbruster | error_report("scsi-generic: not /dev/sg*");
|
474 | d52affa7 | Gerd Hoffmann | return -1; |
475 | d52affa7 | Gerd Hoffmann | } |
476 | 2cc977e2 | ths | |
477 | 2cc977e2 | ths | /* check we are using a driver managing SG_IO (version 3 and after */
|
478 | 428c149b | Christoph Hellwig | if (bdrv_ioctl(s->bs, SG_GET_VERSION_NUM, &sg_version) < 0 || |
479 | d52affa7 | Gerd Hoffmann | sg_version < 30000) {
|
480 | 1ecda02b | Markus Armbruster | error_report("scsi-generic: scsi generic interface too old");
|
481 | d52affa7 | Gerd Hoffmann | return -1; |
482 | d52affa7 | Gerd Hoffmann | } |
483 | 2cc977e2 | ths | |
484 | 2cc977e2 | ths | /* get LUN of the /dev/sg? */
|
485 | 428c149b | Christoph Hellwig | if (bdrv_ioctl(s->bs, SG_GET_SCSI_ID, &scsiid)) {
|
486 | 1ecda02b | Markus Armbruster | error_report("scsi-generic: SG_GET_SCSI_ID ioctl failed");
|
487 | d52affa7 | Gerd Hoffmann | return -1; |
488 | d52affa7 | Gerd Hoffmann | } |
489 | 2cc977e2 | ths | |
490 | 2cc977e2 | ths | /* define device state */
|
491 | 2cc977e2 | ths | s->lun = scsiid.lun; |
492 | 89c0f643 | aurel32 | DPRINTF("LUN %d\n", s->lun);
|
493 | 91376656 | Gerd Hoffmann | s->qdev.type = scsiid.scsi_type; |
494 | 91376656 | Gerd Hoffmann | DPRINTF("device type %d\n", s->qdev.type);
|
495 | 91376656 | Gerd Hoffmann | if (s->qdev.type == TYPE_TAPE) {
|
496 | 428c149b | Christoph Hellwig | s->qdev.blocksize = get_stream_blocksize(s->bs); |
497 | b07995e3 | Gerd Hoffmann | if (s->qdev.blocksize == -1) |
498 | b07995e3 | Gerd Hoffmann | s->qdev.blocksize = 0;
|
499 | 89c0f643 | aurel32 | } else {
|
500 | 428c149b | Christoph Hellwig | s->qdev.blocksize = get_blocksize(s->bs); |
501 | 89c0f643 | aurel32 | /* removable media returns 0 if not present */
|
502 | b07995e3 | Gerd Hoffmann | if (s->qdev.blocksize <= 0) { |
503 | 91376656 | Gerd Hoffmann | if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM)
|
504 | b07995e3 | Gerd Hoffmann | s->qdev.blocksize = 2048;
|
505 | 89c0f643 | aurel32 | else
|
506 | b07995e3 | Gerd Hoffmann | s->qdev.blocksize = 512;
|
507 | 89c0f643 | aurel32 | } |
508 | 89c0f643 | aurel32 | } |
509 | b07995e3 | Gerd Hoffmann | DPRINTF("block size %d\n", s->qdev.blocksize);
|
510 | 2cc977e2 | ths | s->driver_status = 0;
|
511 | 2cc977e2 | ths | memset(s->sensebuf, 0, sizeof(s->sensebuf)); |
512 | d52affa7 | Gerd Hoffmann | return 0; |
513 | d52affa7 | Gerd Hoffmann | } |
514 | 2cc977e2 | ths | |
515 | d52affa7 | Gerd Hoffmann | static SCSIDeviceInfo scsi_generic_info = {
|
516 | d52affa7 | Gerd Hoffmann | .qdev.name = "scsi-generic",
|
517 | d52affa7 | Gerd Hoffmann | .qdev.desc = "pass through generic scsi device (/dev/sg*)",
|
518 | d52affa7 | Gerd Hoffmann | .qdev.size = sizeof(SCSIGenericState),
|
519 | d52affa7 | Gerd Hoffmann | .init = scsi_generic_initfn, |
520 | d52affa7 | Gerd Hoffmann | .destroy = scsi_destroy, |
521 | d52affa7 | Gerd Hoffmann | .send_command = scsi_send_command, |
522 | d52affa7 | Gerd Hoffmann | .read_data = scsi_read_data, |
523 | d52affa7 | Gerd Hoffmann | .write_data = scsi_write_data, |
524 | d52affa7 | Gerd Hoffmann | .cancel_io = scsi_cancel_io, |
525 | d52affa7 | Gerd Hoffmann | .get_buf = scsi_get_buf, |
526 | d52affa7 | Gerd Hoffmann | .qdev.props = (Property[]) { |
527 | 428c149b | Christoph Hellwig | DEFINE_BLOCK_PROPERTIES(SCSIGenericState, qdev.conf), |
528 | d52affa7 | Gerd Hoffmann | DEFINE_PROP_END_OF_LIST(), |
529 | d52affa7 | Gerd Hoffmann | }, |
530 | d52affa7 | Gerd Hoffmann | }; |
531 | 2cc977e2 | ths | |
532 | d52affa7 | Gerd Hoffmann | static void scsi_generic_register_devices(void) |
533 | d52affa7 | Gerd Hoffmann | { |
534 | d52affa7 | Gerd Hoffmann | scsi_qdev_register(&scsi_generic_info); |
535 | 2cc977e2 | ths | } |
536 | d52affa7 | Gerd Hoffmann | device_init(scsi_generic_register_devices) |
537 | d52affa7 | Gerd Hoffmann | |
538 | 2cc977e2 | ths | #endif /* __linux__ */ |