root / hw / scsi-disk.c @ b94ec3ec
History | View | Annotate | Download (17.5 kB)
1 | 2e5d83bb | pbrook | /*
|
---|---|---|---|
2 | 2e5d83bb | pbrook | * SCSI Device emulation
|
3 | 2e5d83bb | pbrook | *
|
4 | 2e5d83bb | pbrook | * Copyright (c) 2006 CodeSourcery.
|
5 | 2e5d83bb | pbrook | * Based on code by Fabrice Bellard
|
6 | 2e5d83bb | pbrook | *
|
7 | 2e5d83bb | pbrook | * Written by Paul Brook
|
8 | 2e5d83bb | pbrook | *
|
9 | 2e5d83bb | pbrook | * This code is licenced under the LGPL.
|
10 | a917d384 | pbrook | *
|
11 | a917d384 | pbrook | * Note that this file only handles the SCSI architecture model and device
|
12 | a917d384 | pbrook | * commands. Emultion of interface/link layer protocols is handled by
|
13 | a917d384 | pbrook | * the host adapter emulation.
|
14 | 2e5d83bb | pbrook | */
|
15 | 2e5d83bb | pbrook | |
16 | 2e5d83bb | pbrook | //#define DEBUG_SCSI
|
17 | 2e5d83bb | pbrook | |
18 | 2e5d83bb | pbrook | #ifdef DEBUG_SCSI
|
19 | 2e5d83bb | pbrook | #define DPRINTF(fmt, args...) \
|
20 | 2e5d83bb | pbrook | do { printf("scsi-disk: " fmt , ##args); } while (0) |
21 | 2e5d83bb | pbrook | #else
|
22 | 2e5d83bb | pbrook | #define DPRINTF(fmt, args...) do {} while(0) |
23 | 2e5d83bb | pbrook | #endif
|
24 | 2e5d83bb | pbrook | |
25 | 2e5d83bb | pbrook | #define BADF(fmt, args...) \
|
26 | 2e5d83bb | pbrook | do { fprintf(stderr, "scsi-disk: " fmt , ##args); } while (0) |
27 | 2e5d83bb | pbrook | |
28 | 87ecb68b | pbrook | #include "qemu-common.h" |
29 | 87ecb68b | pbrook | #include "block.h" |
30 | 87ecb68b | pbrook | #include "scsi-disk.h" |
31 | 2e5d83bb | pbrook | |
32 | 2e5d83bb | pbrook | #define SENSE_NO_SENSE 0 |
33 | 1aacf348 | pbrook | #define SENSE_NOT_READY 2 |
34 | 4d611c9a | pbrook | #define SENSE_HARDWARE_ERROR 4 |
35 | 2e5d83bb | pbrook | #define SENSE_ILLEGAL_REQUEST 5 |
36 | 2e5d83bb | pbrook | |
37 | a917d384 | pbrook | #define SCSI_DMA_BUF_SIZE 65536 |
38 | a917d384 | pbrook | |
39 | a917d384 | pbrook | typedef struct SCSIRequest { |
40 | 8ccc2ace | ths | SCSIDeviceState *dev; |
41 | 2e5d83bb | pbrook | uint32_t tag; |
42 | 2e5d83bb | pbrook | /* ??? We should probably keep track of whether the data trasfer is
|
43 | 2e5d83bb | pbrook | a read or a write. Currently we rely on the host getting it right. */
|
44 | a917d384 | pbrook | /* Both sector and sector_count are in terms of qemu 512 byte blocks. */
|
45 | 2e5d83bb | pbrook | int sector;
|
46 | 2e5d83bb | pbrook | int sector_count;
|
47 | a917d384 | pbrook | /* The amounnt of data in the buffer. */
|
48 | 2e5d83bb | pbrook | int buf_len;
|
49 | 33f00271 | balrog | uint8_t *dma_buf; |
50 | 4d611c9a | pbrook | BlockDriverAIOCB *aiocb; |
51 | a917d384 | pbrook | struct SCSIRequest *next;
|
52 | a917d384 | pbrook | } SCSIRequest; |
53 | a917d384 | pbrook | |
54 | 8ccc2ace | ths | struct SCSIDeviceState
|
55 | a917d384 | pbrook | { |
56 | a917d384 | pbrook | BlockDriverState *bdrv; |
57 | a917d384 | pbrook | SCSIRequest *requests; |
58 | a917d384 | pbrook | /* The qemu block layer uses a fixed 512 byte sector size.
|
59 | a917d384 | pbrook | This is the number of 512 byte blocks in a single scsi sector. */
|
60 | a917d384 | pbrook | int cluster_size;
|
61 | a917d384 | pbrook | int sense;
|
62 | a917d384 | pbrook | int tcq;
|
63 | 4d611c9a | pbrook | /* Completion functions may be called from either scsi_{read,write}_data
|
64 | 4d611c9a | pbrook | or from the AIO completion routines. */
|
65 | 2e5d83bb | pbrook | scsi_completionfn completion; |
66 | 2e5d83bb | pbrook | void *opaque;
|
67 | 2e5d83bb | pbrook | }; |
68 | 2e5d83bb | pbrook | |
69 | a917d384 | pbrook | /* Global pool of SCSIRequest structures. */
|
70 | a917d384 | pbrook | static SCSIRequest *free_requests = NULL; |
71 | a917d384 | pbrook | |
72 | 8ccc2ace | ths | static SCSIRequest *scsi_new_request(SCSIDeviceState *s, uint32_t tag)
|
73 | 2e5d83bb | pbrook | { |
74 | a917d384 | pbrook | SCSIRequest *r; |
75 | a917d384 | pbrook | |
76 | a917d384 | pbrook | if (free_requests) {
|
77 | a917d384 | pbrook | r = free_requests; |
78 | a917d384 | pbrook | free_requests = r->next; |
79 | a917d384 | pbrook | } else {
|
80 | a917d384 | pbrook | r = qemu_malloc(sizeof(SCSIRequest));
|
81 | 33f00271 | balrog | r->dma_buf = qemu_memalign(512, SCSI_DMA_BUF_SIZE);
|
82 | a917d384 | pbrook | } |
83 | a917d384 | pbrook | r->dev = s; |
84 | a917d384 | pbrook | r->tag = tag; |
85 | a917d384 | pbrook | r->sector_count = 0;
|
86 | a917d384 | pbrook | r->buf_len = 0;
|
87 | a917d384 | pbrook | r->aiocb = NULL;
|
88 | a917d384 | pbrook | |
89 | a917d384 | pbrook | r->next = s->requests; |
90 | a917d384 | pbrook | s->requests = r; |
91 | a917d384 | pbrook | return r;
|
92 | 2e5d83bb | pbrook | } |
93 | 2e5d83bb | pbrook | |
94 | a917d384 | pbrook | static void scsi_remove_request(SCSIRequest *r) |
95 | 4d611c9a | pbrook | { |
96 | a917d384 | pbrook | SCSIRequest *last; |
97 | 8ccc2ace | ths | SCSIDeviceState *s = r->dev; |
98 | a917d384 | pbrook | |
99 | a917d384 | pbrook | if (s->requests == r) {
|
100 | a917d384 | pbrook | s->requests = r->next; |
101 | a917d384 | pbrook | } else {
|
102 | a917d384 | pbrook | last = s->requests; |
103 | a917d384 | pbrook | while (last && last->next != r)
|
104 | a917d384 | pbrook | last = last->next; |
105 | a917d384 | pbrook | if (last) {
|
106 | a917d384 | pbrook | last->next = r->next; |
107 | a917d384 | pbrook | } else {
|
108 | a917d384 | pbrook | BADF("Orphaned request\n");
|
109 | a917d384 | pbrook | } |
110 | a917d384 | pbrook | } |
111 | a917d384 | pbrook | r->next = free_requests; |
112 | a917d384 | pbrook | free_requests = r; |
113 | 4d611c9a | pbrook | } |
114 | 4d611c9a | pbrook | |
115 | 8ccc2ace | ths | static SCSIRequest *scsi_find_request(SCSIDeviceState *s, uint32_t tag)
|
116 | 4d611c9a | pbrook | { |
117 | a917d384 | pbrook | SCSIRequest *r; |
118 | 4d611c9a | pbrook | |
119 | a917d384 | pbrook | r = s->requests; |
120 | a917d384 | pbrook | while (r && r->tag != tag)
|
121 | a917d384 | pbrook | r = r->next; |
122 | 4d611c9a | pbrook | |
123 | a917d384 | pbrook | return r;
|
124 | a917d384 | pbrook | } |
125 | a917d384 | pbrook | |
126 | a917d384 | pbrook | /* Helper function for command completion. */
|
127 | a917d384 | pbrook | static void scsi_command_complete(SCSIRequest *r, int sense) |
128 | a917d384 | pbrook | { |
129 | 8ccc2ace | ths | SCSIDeviceState *s = r->dev; |
130 | a917d384 | pbrook | uint32_t tag; |
131 | a917d384 | pbrook | DPRINTF("Command complete tag=0x%x sense=%d\n", r->tag, sense);
|
132 | a917d384 | pbrook | s->sense = sense; |
133 | a917d384 | pbrook | tag = r->tag; |
134 | a917d384 | pbrook | scsi_remove_request(r); |
135 | a917d384 | pbrook | s->completion(s->opaque, SCSI_REASON_DONE, tag, sense); |
136 | 4d611c9a | pbrook | } |
137 | 4d611c9a | pbrook | |
138 | 4d611c9a | pbrook | /* Cancel a pending data transfer. */
|
139 | 8ccc2ace | ths | static void scsi_cancel_io(SCSIDevice *d, uint32_t tag) |
140 | 4d611c9a | pbrook | { |
141 | 8ccc2ace | ths | SCSIDeviceState *s = d->state; |
142 | a917d384 | pbrook | SCSIRequest *r; |
143 | a917d384 | pbrook | DPRINTF("Cancel tag=0x%x\n", tag);
|
144 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
145 | a917d384 | pbrook | if (r) {
|
146 | a917d384 | pbrook | if (r->aiocb)
|
147 | a917d384 | pbrook | bdrv_aio_cancel(r->aiocb); |
148 | a917d384 | pbrook | r->aiocb = NULL;
|
149 | a917d384 | pbrook | scsi_remove_request(r); |
150 | a917d384 | pbrook | } |
151 | a917d384 | pbrook | } |
152 | a917d384 | pbrook | |
153 | a917d384 | pbrook | static void scsi_read_complete(void * opaque, int ret) |
154 | a917d384 | pbrook | { |
155 | a917d384 | pbrook | SCSIRequest *r = (SCSIRequest *)opaque; |
156 | 8ccc2ace | ths | SCSIDeviceState *s = r->dev; |
157 | a917d384 | pbrook | |
158 | a917d384 | pbrook | if (ret) {
|
159 | a917d384 | pbrook | DPRINTF("IO error\n");
|
160 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
161 | 4d611c9a | pbrook | return;
|
162 | 4d611c9a | pbrook | } |
163 | a917d384 | pbrook | DPRINTF("Data ready tag=0x%x len=%d\n", r->tag, r->buf_len);
|
164 | a917d384 | pbrook | |
165 | a917d384 | pbrook | s->completion(s->opaque, SCSI_REASON_DATA, r->tag, r->buf_len); |
166 | 4d611c9a | pbrook | } |
167 | 4d611c9a | pbrook | |
168 | a917d384 | pbrook | /* Read more data from scsi device into buffer. */
|
169 | 8ccc2ace | ths | static void scsi_read_data(SCSIDevice *d, uint32_t tag) |
170 | 2e5d83bb | pbrook | { |
171 | 8ccc2ace | ths | SCSIDeviceState *s = d->state; |
172 | a917d384 | pbrook | SCSIRequest *r; |
173 | 2e5d83bb | pbrook | uint32_t n; |
174 | 2e5d83bb | pbrook | |
175 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
176 | a917d384 | pbrook | if (!r) {
|
177 | a917d384 | pbrook | BADF("Bad read tag 0x%x\n", tag);
|
178 | a917d384 | pbrook | /* ??? This is the wrong error. */
|
179 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
180 | a917d384 | pbrook | return;
|
181 | 2e5d83bb | pbrook | } |
182 | a917d384 | pbrook | if (r->sector_count == (uint32_t)-1) { |
183 | a917d384 | pbrook | DPRINTF("Read buf_len=%d\n", r->buf_len);
|
184 | a917d384 | pbrook | r->sector_count = 0;
|
185 | a917d384 | pbrook | s->completion(s->opaque, SCSI_REASON_DATA, r->tag, r->buf_len); |
186 | a917d384 | pbrook | return;
|
187 | 2e5d83bb | pbrook | } |
188 | a917d384 | pbrook | DPRINTF("Read sector_count=%d\n", r->sector_count);
|
189 | a917d384 | pbrook | if (r->sector_count == 0) { |
190 | a917d384 | pbrook | scsi_command_complete(r, SENSE_NO_SENSE); |
191 | a917d384 | pbrook | return;
|
192 | 2e5d83bb | pbrook | } |
193 | 2e5d83bb | pbrook | |
194 | a917d384 | pbrook | n = r->sector_count; |
195 | a917d384 | pbrook | if (n > SCSI_DMA_BUF_SIZE / 512) |
196 | a917d384 | pbrook | n = SCSI_DMA_BUF_SIZE / 512;
|
197 | a917d384 | pbrook | |
198 | a917d384 | pbrook | r->buf_len = n * 512;
|
199 | a917d384 | pbrook | r->aiocb = bdrv_aio_read(s->bdrv, r->sector, r->dma_buf, n, |
200 | a917d384 | pbrook | scsi_read_complete, r); |
201 | a917d384 | pbrook | if (r->aiocb == NULL) |
202 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
203 | a917d384 | pbrook | r->sector += n; |
204 | a917d384 | pbrook | r->sector_count -= n; |
205 | 2e5d83bb | pbrook | } |
206 | 2e5d83bb | pbrook | |
207 | 4d611c9a | pbrook | static void scsi_write_complete(void * opaque, int ret) |
208 | 4d611c9a | pbrook | { |
209 | a917d384 | pbrook | SCSIRequest *r = (SCSIRequest *)opaque; |
210 | 8ccc2ace | ths | SCSIDeviceState *s = r->dev; |
211 | a917d384 | pbrook | uint32_t len; |
212 | 4d611c9a | pbrook | |
213 | 4d611c9a | pbrook | if (ret) {
|
214 | 4d611c9a | pbrook | fprintf(stderr, "scsi-disc: IO write error\n");
|
215 | 4d611c9a | pbrook | exit(1);
|
216 | 4d611c9a | pbrook | } |
217 | 4d611c9a | pbrook | |
218 | a917d384 | pbrook | r->aiocb = NULL;
|
219 | a917d384 | pbrook | if (r->sector_count == 0) { |
220 | a917d384 | pbrook | scsi_command_complete(r, SENSE_NO_SENSE); |
221 | a917d384 | pbrook | } else {
|
222 | a917d384 | pbrook | len = r->sector_count * 512;
|
223 | a917d384 | pbrook | if (len > SCSI_DMA_BUF_SIZE) {
|
224 | a917d384 | pbrook | len = SCSI_DMA_BUF_SIZE; |
225 | a917d384 | pbrook | } |
226 | a917d384 | pbrook | r->buf_len = len; |
227 | a917d384 | pbrook | DPRINTF("Write complete tag=0x%x more=%d\n", r->tag, len);
|
228 | a917d384 | pbrook | s->completion(s->opaque, SCSI_REASON_DATA, r->tag, len); |
229 | 4d611c9a | pbrook | } |
230 | 4d611c9a | pbrook | } |
231 | 4d611c9a | pbrook | |
232 | 4d611c9a | pbrook | /* Write data to a scsi device. Returns nonzero on failure.
|
233 | 4d611c9a | pbrook | The transfer may complete asynchronously. */
|
234 | 8ccc2ace | ths | static int scsi_write_data(SCSIDevice *d, uint32_t tag) |
235 | 2e5d83bb | pbrook | { |
236 | 8ccc2ace | ths | SCSIDeviceState *s = d->state; |
237 | a917d384 | pbrook | SCSIRequest *r; |
238 | 2e5d83bb | pbrook | uint32_t n; |
239 | 2e5d83bb | pbrook | |
240 | a917d384 | pbrook | DPRINTF("Write data tag=0x%x\n", tag);
|
241 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
242 | a917d384 | pbrook | if (!r) {
|
243 | a917d384 | pbrook | BADF("Bad write tag 0x%x\n", tag);
|
244 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
245 | 2e5d83bb | pbrook | return 1; |
246 | 2e5d83bb | pbrook | } |
247 | a917d384 | pbrook | if (r->aiocb)
|
248 | a917d384 | pbrook | BADF("Data transfer already in progress\n");
|
249 | a917d384 | pbrook | n = r->buf_len / 512;
|
250 | a917d384 | pbrook | if (n) {
|
251 | a917d384 | pbrook | r->aiocb = bdrv_aio_write(s->bdrv, r->sector, r->dma_buf, n, |
252 | a917d384 | pbrook | scsi_write_complete, r); |
253 | a917d384 | pbrook | if (r->aiocb == NULL) |
254 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
255 | a917d384 | pbrook | r->sector += n; |
256 | a917d384 | pbrook | r->sector_count -= n; |
257 | a917d384 | pbrook | } else {
|
258 | a917d384 | pbrook | /* Invoke completion routine to fetch data from host. */
|
259 | a917d384 | pbrook | scsi_write_complete(r, 0);
|
260 | 2e5d83bb | pbrook | } |
261 | 2e5d83bb | pbrook | |
262 | a917d384 | pbrook | return 0; |
263 | a917d384 | pbrook | } |
264 | 2e5d83bb | pbrook | |
265 | a917d384 | pbrook | /* Return a pointer to the data buffer. */
|
266 | 8ccc2ace | ths | static uint8_t *scsi_get_buf(SCSIDevice *d, uint32_t tag)
|
267 | a917d384 | pbrook | { |
268 | 8ccc2ace | ths | SCSIDeviceState *s = d->state; |
269 | a917d384 | pbrook | SCSIRequest *r; |
270 | 2e5d83bb | pbrook | |
271 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
272 | a917d384 | pbrook | if (!r) {
|
273 | a917d384 | pbrook | BADF("Bad buffer tag 0x%x\n", tag);
|
274 | a917d384 | pbrook | return NULL; |
275 | 4d611c9a | pbrook | } |
276 | a917d384 | pbrook | return r->dma_buf;
|
277 | 2e5d83bb | pbrook | } |
278 | 2e5d83bb | pbrook | |
279 | 2e5d83bb | pbrook | /* Execute a scsi command. Returns the length of the data expected by the
|
280 | 2e5d83bb | pbrook | command. This will be Positive for data transfers from the device
|
281 | 2e5d83bb | pbrook | (eg. disk reads), negative for transfers to the device (eg. disk writes),
|
282 | 2e5d83bb | pbrook | and zero if the command does not transfer any data. */
|
283 | 2e5d83bb | pbrook | |
284 | 8ccc2ace | ths | static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
|
285 | 8ccc2ace | ths | uint8_t *buf, int lun)
|
286 | 2e5d83bb | pbrook | { |
287 | 8ccc2ace | ths | SCSIDeviceState *s = d->state; |
288 | 96b8f136 | ths | uint64_t nb_sectors; |
289 | 2e5d83bb | pbrook | uint32_t lba; |
290 | 2e5d83bb | pbrook | uint32_t len; |
291 | 2e5d83bb | pbrook | int cmdlen;
|
292 | 2e5d83bb | pbrook | int is_write;
|
293 | a917d384 | pbrook | uint8_t command; |
294 | a917d384 | pbrook | uint8_t *outbuf; |
295 | a917d384 | pbrook | SCSIRequest *r; |
296 | a917d384 | pbrook | |
297 | a917d384 | pbrook | command = buf[0];
|
298 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
299 | a917d384 | pbrook | if (r) {
|
300 | a917d384 | pbrook | BADF("Tag 0x%x already in use\n", tag);
|
301 | 8ccc2ace | ths | scsi_cancel_io(d, tag); |
302 | a917d384 | pbrook | } |
303 | a917d384 | pbrook | /* ??? Tags are not unique for different luns. We only implement a
|
304 | a917d384 | pbrook | single lun, so this should not matter. */
|
305 | a917d384 | pbrook | r = scsi_new_request(s, tag); |
306 | a917d384 | pbrook | outbuf = r->dma_buf; |
307 | 2e5d83bb | pbrook | is_write = 0;
|
308 | a917d384 | pbrook | DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]); |
309 | a917d384 | pbrook | switch (command >> 5) { |
310 | 2e5d83bb | pbrook | case 0: |
311 | 2e5d83bb | pbrook | lba = buf[3] | (buf[2] << 8) | ((buf[1] & 0x1f) << 16); |
312 | 2e5d83bb | pbrook | len = buf[4];
|
313 | 2e5d83bb | pbrook | cmdlen = 6;
|
314 | 2e5d83bb | pbrook | break;
|
315 | 2e5d83bb | pbrook | case 1: |
316 | 2e5d83bb | pbrook | case 2: |
317 | 2e5d83bb | pbrook | lba = buf[5] | (buf[4] << 8) | (buf[3] << 16) | (buf[2] << 24); |
318 | 2e5d83bb | pbrook | len = buf[8] | (buf[7] << 8); |
319 | 2e5d83bb | pbrook | cmdlen = 10;
|
320 | 2e5d83bb | pbrook | break;
|
321 | 2e5d83bb | pbrook | case 4: |
322 | 2e5d83bb | pbrook | lba = buf[5] | (buf[4] << 8) | (buf[3] << 16) | (buf[2] << 24); |
323 | 2e5d83bb | pbrook | len = buf[13] | (buf[12] << 8) | (buf[11] << 16) | (buf[10] << 24); |
324 | 2e5d83bb | pbrook | cmdlen = 16;
|
325 | 2e5d83bb | pbrook | break;
|
326 | 2e5d83bb | pbrook | case 5: |
327 | 2e5d83bb | pbrook | lba = buf[5] | (buf[4] << 8) | (buf[3] << 16) | (buf[2] << 24); |
328 | 2e5d83bb | pbrook | len = buf[9] | (buf[8] << 8) | (buf[7] << 16) | (buf[6] << 24); |
329 | 2e5d83bb | pbrook | cmdlen = 12;
|
330 | 2e5d83bb | pbrook | break;
|
331 | 2e5d83bb | pbrook | default:
|
332 | a917d384 | pbrook | BADF("Unsupported command length, command %x\n", command);
|
333 | 2e5d83bb | pbrook | goto fail;
|
334 | 2e5d83bb | pbrook | } |
335 | 2e5d83bb | pbrook | #ifdef DEBUG_SCSI
|
336 | 2e5d83bb | pbrook | { |
337 | 2e5d83bb | pbrook | int i;
|
338 | 2e5d83bb | pbrook | for (i = 1; i < cmdlen; i++) { |
339 | 2e5d83bb | pbrook | printf(" 0x%02x", buf[i]);
|
340 | 2e5d83bb | pbrook | } |
341 | 2e5d83bb | pbrook | printf("\n");
|
342 | 2e5d83bb | pbrook | } |
343 | 2e5d83bb | pbrook | #endif
|
344 | 0fc5c15a | pbrook | if (lun || buf[1] >> 5) { |
345 | 2e5d83bb | pbrook | /* Only LUN 0 supported. */
|
346 | 0fc5c15a | pbrook | DPRINTF("Unimplemented LUN %d\n", lun ? lun : buf[1] >> 5); |
347 | 2e5d83bb | pbrook | goto fail;
|
348 | 2e5d83bb | pbrook | } |
349 | a917d384 | pbrook | switch (command) {
|
350 | 2e5d83bb | pbrook | case 0x0: |
351 | 2e5d83bb | pbrook | DPRINTF("Test Unit Ready\n");
|
352 | 2e5d83bb | pbrook | break;
|
353 | 2e5d83bb | pbrook | case 0x03: |
354 | 2e5d83bb | pbrook | DPRINTF("Request Sense (len %d)\n", len);
|
355 | 2e5d83bb | pbrook | if (len < 4) |
356 | 2e5d83bb | pbrook | goto fail;
|
357 | 67cd24a8 | ths | memset(outbuf, 0, 4); |
358 | a917d384 | pbrook | outbuf[0] = 0xf0; |
359 | a917d384 | pbrook | outbuf[1] = 0; |
360 | a917d384 | pbrook | outbuf[2] = s->sense;
|
361 | a917d384 | pbrook | r->buf_len = 4;
|
362 | 2e5d83bb | pbrook | break;
|
363 | 2e5d83bb | pbrook | case 0x12: |
364 | 7d8406be | pbrook | DPRINTF("Inquiry (len %d)\n", len);
|
365 | 2e5d83bb | pbrook | if (len < 36) { |
366 | 2e5d83bb | pbrook | BADF("Inquiry buffer too small (%d)\n", len);
|
367 | 2e5d83bb | pbrook | } |
368 | a917d384 | pbrook | memset(outbuf, 0, 36); |
369 | 2e5d83bb | pbrook | if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) {
|
370 | a917d384 | pbrook | outbuf[0] = 5; |
371 | a917d384 | pbrook | outbuf[1] = 0x80; |
372 | a917d384 | pbrook | memcpy(&outbuf[16], "QEMU CD-ROM ", 16); |
373 | 2e5d83bb | pbrook | } else {
|
374 | a917d384 | pbrook | outbuf[0] = 0; |
375 | a917d384 | pbrook | memcpy(&outbuf[16], "QEMU HARDDISK ", 16); |
376 | 2e5d83bb | pbrook | } |
377 | a917d384 | pbrook | memcpy(&outbuf[8], "QEMU ", 8); |
378 | a917d384 | pbrook | memcpy(&outbuf[32], QEMU_VERSION, 4); |
379 | 17acfe32 | pbrook | /* Identify device as SCSI-3 rev 1.
|
380 | 17acfe32 | pbrook | Some later commands are also implemented. */
|
381 | a917d384 | pbrook | outbuf[2] = 3; |
382 | a917d384 | pbrook | outbuf[3] = 2; /* Format 2 */ |
383 | 67cd24a8 | ths | outbuf[4] = 31; |
384 | a917d384 | pbrook | /* Sync data transfer and TCQ. */
|
385 | a917d384 | pbrook | outbuf[7] = 0x10 | (s->tcq ? 0x02 : 0); |
386 | a917d384 | pbrook | r->buf_len = 36;
|
387 | 2e5d83bb | pbrook | break;
|
388 | 2e5d83bb | pbrook | case 0x16: |
389 | 2e5d83bb | pbrook | DPRINTF("Reserve(6)\n");
|
390 | 2e5d83bb | pbrook | if (buf[1] & 1) |
391 | 2e5d83bb | pbrook | goto fail;
|
392 | 2e5d83bb | pbrook | break;
|
393 | 2e5d83bb | pbrook | case 0x17: |
394 | 2e5d83bb | pbrook | DPRINTF("Release(6)\n");
|
395 | 2e5d83bb | pbrook | if (buf[1] & 1) |
396 | 2e5d83bb | pbrook | goto fail;
|
397 | 2e5d83bb | pbrook | break;
|
398 | 2e5d83bb | pbrook | case 0x1a: |
399 | 7d8406be | pbrook | case 0x5a: |
400 | 17acfe32 | pbrook | { |
401 | a917d384 | pbrook | uint8_t *p; |
402 | 17acfe32 | pbrook | int page;
|
403 | 17acfe32 | pbrook | |
404 | 17acfe32 | pbrook | page = buf[2] & 0x3f; |
405 | 17acfe32 | pbrook | DPRINTF("Mode Sense (page %d, len %d)\n", page, len);
|
406 | a917d384 | pbrook | p = outbuf; |
407 | 17acfe32 | pbrook | memset(p, 0, 4); |
408 | a917d384 | pbrook | outbuf[1] = 0; /* Default media type. */ |
409 | a917d384 | pbrook | outbuf[3] = 0; /* Block descriptor length. */ |
410 | 17acfe32 | pbrook | if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) {
|
411 | a917d384 | pbrook | outbuf[2] = 0x80; /* Readonly. */ |
412 | 17acfe32 | pbrook | } |
413 | 17acfe32 | pbrook | p += 4;
|
414 | 17acfe32 | pbrook | if ((page == 8 || page == 0x3f)) { |
415 | 17acfe32 | pbrook | /* Caching page. */
|
416 | 67cd24a8 | ths | memset(p,0,20); |
417 | 17acfe32 | pbrook | p[0] = 8; |
418 | 17acfe32 | pbrook | p[1] = 0x12; |
419 | 17acfe32 | pbrook | p[2] = 4; /* WCE */ |
420 | 67cd24a8 | ths | p += 20;
|
421 | 17acfe32 | pbrook | } |
422 | 17acfe32 | pbrook | if ((page == 0x3f || page == 0x2a) |
423 | 17acfe32 | pbrook | && (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM)) { |
424 | 17acfe32 | pbrook | /* CD Capabilities and Mechanical Status page. */
|
425 | 17acfe32 | pbrook | p[0] = 0x2a; |
426 | 17acfe32 | pbrook | p[1] = 0x14; |
427 | 17acfe32 | pbrook | p[2] = 3; // CD-R & CD-RW read |
428 | 17acfe32 | pbrook | p[3] = 0; // Writing not supported |
429 | 17acfe32 | pbrook | p[4] = 0x7f; /* Audio, composite, digital out, |
430 | 17acfe32 | pbrook | mode 2 form 1&2, multi session */
|
431 | 17acfe32 | pbrook | p[5] = 0xff; /* CD DA, DA accurate, RW supported, |
432 | 17acfe32 | pbrook | RW corrected, C2 errors, ISRC,
|
433 | 17acfe32 | pbrook | UPC, Bar code */
|
434 | 17acfe32 | pbrook | p[6] = 0x2d | (bdrv_is_locked(s->bdrv)? 2 : 0); |
435 | 17acfe32 | pbrook | /* Locking supported, jumper present, eject, tray */
|
436 | 17acfe32 | pbrook | p[7] = 0; /* no volume & mute control, no |
437 | 17acfe32 | pbrook | changer */
|
438 | 17acfe32 | pbrook | p[8] = (50 * 176) >> 8; // 50x read speed |
439 | 17acfe32 | pbrook | p[9] = (50 * 176) & 0xff; |
440 | 17acfe32 | pbrook | p[10] = 0 >> 8; // No volume |
441 | 17acfe32 | pbrook | p[11] = 0 & 0xff; |
442 | 17acfe32 | pbrook | p[12] = 2048 >> 8; // 2M buffer |
443 | 17acfe32 | pbrook | p[13] = 2048 & 0xff; |
444 | 17acfe32 | pbrook | p[14] = (16 * 176) >> 8; // 16x read speed current |
445 | 17acfe32 | pbrook | p[15] = (16 * 176) & 0xff; |
446 | 17acfe32 | pbrook | p[18] = (16 * 176) >> 8; // 16x write speed |
447 | 17acfe32 | pbrook | p[19] = (16 * 176) & 0xff; |
448 | 17acfe32 | pbrook | p[20] = (16 * 176) >> 8; // 16x write speed current |
449 | 17acfe32 | pbrook | p[21] = (16 * 176) & 0xff; |
450 | 67cd24a8 | ths | p += 22;
|
451 | 17acfe32 | pbrook | } |
452 | a917d384 | pbrook | r->buf_len = p - outbuf; |
453 | a917d384 | pbrook | outbuf[0] = r->buf_len - 4; |
454 | a917d384 | pbrook | if (r->buf_len > len)
|
455 | a917d384 | pbrook | r->buf_len = len; |
456 | 7d8406be | pbrook | } |
457 | 17acfe32 | pbrook | break;
|
458 | 17acfe32 | pbrook | case 0x1b: |
459 | 17acfe32 | pbrook | DPRINTF("Start Stop Unit\n");
|
460 | 17acfe32 | pbrook | break;
|
461 | 17acfe32 | pbrook | case 0x1e: |
462 | 17acfe32 | pbrook | DPRINTF("Prevent Allow Medium Removal (prevent = %d)\n", buf[4] & 3); |
463 | 17acfe32 | pbrook | bdrv_set_locked(s->bdrv, buf[4] & 1); |
464 | 2e5d83bb | pbrook | break;
|
465 | 2e5d83bb | pbrook | case 0x25: |
466 | 2e5d83bb | pbrook | DPRINTF("Read Capacity\n");
|
467 | 2e5d83bb | pbrook | /* The normal LEN field for this command is zero. */
|
468 | a917d384 | pbrook | memset(outbuf, 0, 8); |
469 | 2e5d83bb | pbrook | bdrv_get_geometry(s->bdrv, &nb_sectors); |
470 | 51c1ebb1 | pbrook | /* Returned value is the address of the last sector. */
|
471 | 51c1ebb1 | pbrook | if (nb_sectors) {
|
472 | 51c1ebb1 | pbrook | nb_sectors--; |
473 | a917d384 | pbrook | outbuf[0] = (nb_sectors >> 24) & 0xff; |
474 | a917d384 | pbrook | outbuf[1] = (nb_sectors >> 16) & 0xff; |
475 | a917d384 | pbrook | outbuf[2] = (nb_sectors >> 8) & 0xff; |
476 | a917d384 | pbrook | outbuf[3] = nb_sectors & 0xff; |
477 | a917d384 | pbrook | outbuf[4] = 0; |
478 | a917d384 | pbrook | outbuf[5] = 0; |
479 | a917d384 | pbrook | outbuf[6] = s->cluster_size * 2; |
480 | a917d384 | pbrook | outbuf[7] = 0; |
481 | a917d384 | pbrook | r->buf_len = 8;
|
482 | 51c1ebb1 | pbrook | } else {
|
483 | a917d384 | pbrook | scsi_command_complete(r, SENSE_NOT_READY); |
484 | 35f1df84 | pbrook | return 0; |
485 | 51c1ebb1 | pbrook | } |
486 | 2e5d83bb | pbrook | break;
|
487 | 2e5d83bb | pbrook | case 0x08: |
488 | 2e5d83bb | pbrook | case 0x28: |
489 | 2e5d83bb | pbrook | DPRINTF("Read (sector %d, count %d)\n", lba, len);
|
490 | a917d384 | pbrook | r->sector = lba * s->cluster_size; |
491 | a917d384 | pbrook | r->sector_count = len * s->cluster_size; |
492 | 2e5d83bb | pbrook | break;
|
493 | 2e5d83bb | pbrook | case 0x0a: |
494 | 2e5d83bb | pbrook | case 0x2a: |
495 | 2e5d83bb | pbrook | DPRINTF("Write (sector %d, count %d)\n", lba, len);
|
496 | a917d384 | pbrook | r->sector = lba * s->cluster_size; |
497 | a917d384 | pbrook | r->sector_count = len * s->cluster_size; |
498 | 2e5d83bb | pbrook | is_write = 1;
|
499 | 2e5d83bb | pbrook | break;
|
500 | 7d8406be | pbrook | case 0x35: |
501 | e91c8a77 | ths | DPRINTF("Synchronise cache (sector %d, count %d)\n", lba, len);
|
502 | 7a6cba61 | pbrook | bdrv_flush(s->bdrv); |
503 | 7d8406be | pbrook | break;
|
504 | 2e5d83bb | pbrook | case 0x43: |
505 | 2e5d83bb | pbrook | { |
506 | 7c22dd52 | pbrook | int start_track, format, msf, toclen;
|
507 | 2e5d83bb | pbrook | |
508 | 2e5d83bb | pbrook | msf = buf[1] & 2; |
509 | 2e5d83bb | pbrook | format = buf[2] & 0xf; |
510 | 2e5d83bb | pbrook | start_track = buf[6];
|
511 | 2e5d83bb | pbrook | bdrv_get_geometry(s->bdrv, &nb_sectors); |
512 | 2e5d83bb | pbrook | DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1); |
513 | 2e5d83bb | pbrook | switch(format) {
|
514 | 2e5d83bb | pbrook | case 0: |
515 | a917d384 | pbrook | toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); |
516 | 2e5d83bb | pbrook | break;
|
517 | 2e5d83bb | pbrook | case 1: |
518 | 2e5d83bb | pbrook | /* multi session : only a single session defined */
|
519 | 7c22dd52 | pbrook | toclen = 12;
|
520 | a917d384 | pbrook | memset(outbuf, 0, 12); |
521 | a917d384 | pbrook | outbuf[1] = 0x0a; |
522 | a917d384 | pbrook | outbuf[2] = 0x01; |
523 | a917d384 | pbrook | outbuf[3] = 0x01; |
524 | 2e5d83bb | pbrook | break;
|
525 | 2e5d83bb | pbrook | case 2: |
526 | a917d384 | pbrook | toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); |
527 | 2e5d83bb | pbrook | break;
|
528 | 2e5d83bb | pbrook | default:
|
529 | 7c22dd52 | pbrook | goto error_cmd;
|
530 | 7c22dd52 | pbrook | } |
531 | 7c22dd52 | pbrook | if (toclen > 0) { |
532 | 7c22dd52 | pbrook | if (len > toclen)
|
533 | 7c22dd52 | pbrook | len = toclen; |
534 | a917d384 | pbrook | r->buf_len = len; |
535 | 7c22dd52 | pbrook | break;
|
536 | 2e5d83bb | pbrook | } |
537 | 7c22dd52 | pbrook | error_cmd:
|
538 | 7c22dd52 | pbrook | DPRINTF("Read TOC error\n");
|
539 | 7c22dd52 | pbrook | goto fail;
|
540 | 2e5d83bb | pbrook | } |
541 | 17acfe32 | pbrook | case 0x46: |
542 | 17acfe32 | pbrook | DPRINTF("Get Configuration (rt %d, maxlen %d)\n", buf[1] & 3, len); |
543 | a917d384 | pbrook | memset(outbuf, 0, 8); |
544 | 17acfe32 | pbrook | /* ??? This shoud probably return much more information. For now
|
545 | 17acfe32 | pbrook | just return the basic header indicating the CD-ROM profile. */
|
546 | a917d384 | pbrook | outbuf[7] = 8; // CD-ROM |
547 | a917d384 | pbrook | r->buf_len = 8;
|
548 | 17acfe32 | pbrook | break;
|
549 | 2e5d83bb | pbrook | case 0x56: |
550 | 2e5d83bb | pbrook | DPRINTF("Reserve(10)\n");
|
551 | 2e5d83bb | pbrook | if (buf[1] & 3) |
552 | 2e5d83bb | pbrook | goto fail;
|
553 | 2e5d83bb | pbrook | break;
|
554 | 2e5d83bb | pbrook | case 0x57: |
555 | 2e5d83bb | pbrook | DPRINTF("Release(10)\n");
|
556 | 2e5d83bb | pbrook | if (buf[1] & 3) |
557 | 2e5d83bb | pbrook | goto fail;
|
558 | 2e5d83bb | pbrook | break;
|
559 | 2e5d83bb | pbrook | case 0xa0: |
560 | 2e5d83bb | pbrook | DPRINTF("Report LUNs (len %d)\n", len);
|
561 | 2e5d83bb | pbrook | if (len < 16) |
562 | 2e5d83bb | pbrook | goto fail;
|
563 | a917d384 | pbrook | memset(outbuf, 0, 16); |
564 | a917d384 | pbrook | outbuf[3] = 8; |
565 | a917d384 | pbrook | r->buf_len = 16;
|
566 | 2e5d83bb | pbrook | break;
|
567 | 2e5d83bb | pbrook | default:
|
568 | 2e5d83bb | pbrook | DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); |
569 | 2e5d83bb | pbrook | fail:
|
570 | a917d384 | pbrook | scsi_command_complete(r, SENSE_ILLEGAL_REQUEST); |
571 | 2e5d83bb | pbrook | return 0; |
572 | 2e5d83bb | pbrook | } |
573 | a917d384 | pbrook | if (r->sector_count == 0 && r->buf_len == 0) { |
574 | a917d384 | pbrook | scsi_command_complete(r, SENSE_NO_SENSE); |
575 | a917d384 | pbrook | } |
576 | a917d384 | pbrook | len = r->sector_count * 512 + r->buf_len;
|
577 | a917d384 | pbrook | if (is_write) {
|
578 | a917d384 | pbrook | return -len;
|
579 | a917d384 | pbrook | } else {
|
580 | a917d384 | pbrook | if (!r->sector_count)
|
581 | a917d384 | pbrook | r->sector_count = -1;
|
582 | a917d384 | pbrook | return len;
|
583 | 2e5d83bb | pbrook | } |
584 | 2e5d83bb | pbrook | } |
585 | 2e5d83bb | pbrook | |
586 | 8ccc2ace | ths | static void scsi_destroy(SCSIDevice *d) |
587 | 2e5d83bb | pbrook | { |
588 | 8ccc2ace | ths | qemu_free(d->state); |
589 | 8ccc2ace | ths | qemu_free(d); |
590 | 2e5d83bb | pbrook | } |
591 | 2e5d83bb | pbrook | |
592 | 8ccc2ace | ths | SCSIDevice *scsi_disk_init(BlockDriverState *bdrv, int tcq,
|
593 | 8ccc2ace | ths | scsi_completionfn completion, void *opaque)
|
594 | 2e5d83bb | pbrook | { |
595 | 8ccc2ace | ths | SCSIDevice *d; |
596 | 8ccc2ace | ths | SCSIDeviceState *s; |
597 | 2e5d83bb | pbrook | |
598 | 8ccc2ace | ths | s = (SCSIDeviceState *)qemu_mallocz(sizeof(SCSIDeviceState));
|
599 | 2e5d83bb | pbrook | s->bdrv = bdrv; |
600 | a917d384 | pbrook | s->tcq = tcq; |
601 | 2e5d83bb | pbrook | s->completion = completion; |
602 | 2e5d83bb | pbrook | s->opaque = opaque; |
603 | 2e5d83bb | pbrook | if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) {
|
604 | 7c22dd52 | pbrook | s->cluster_size = 4;
|
605 | 2e5d83bb | pbrook | } else {
|
606 | 7c22dd52 | pbrook | s->cluster_size = 1;
|
607 | 2e5d83bb | pbrook | } |
608 | 2e5d83bb | pbrook | |
609 | 8ccc2ace | ths | d = (SCSIDevice *)qemu_mallocz(sizeof(SCSIDevice));
|
610 | 8ccc2ace | ths | d->state = s; |
611 | 8ccc2ace | ths | d->destroy = scsi_destroy; |
612 | 8ccc2ace | ths | d->send_command = scsi_send_command; |
613 | 8ccc2ace | ths | d->read_data = scsi_read_data; |
614 | 8ccc2ace | ths | d->write_data = scsi_write_data; |
615 | 8ccc2ace | ths | d->cancel_io = scsi_cancel_io; |
616 | 8ccc2ace | ths | d->get_buf = scsi_get_buf; |
617 | 2e5d83bb | pbrook | |
618 | 8ccc2ace | ths | return d;
|
619 | 8ccc2ace | ths | } |