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1 | 2e5d83bb | pbrook | /*
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2 | 2e5d83bb | pbrook | * SCSI Device emulation
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3 | 2e5d83bb | pbrook | *
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4 | 2e5d83bb | pbrook | * Copyright (c) 2006 CodeSourcery.
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5 | 2e5d83bb | pbrook | * Based on code by Fabrice Bellard
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6 | 2e5d83bb | pbrook | *
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7 | 2e5d83bb | pbrook | * Written by Paul Brook
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8 | 2e5d83bb | pbrook | *
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9 | 2e5d83bb | pbrook | * This code is licenced under the LGPL.
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10 | a917d384 | pbrook | *
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11 | a917d384 | pbrook | * Note that this file only handles the SCSI architecture model and device
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12 | a917d384 | pbrook | * commands. Emultion of interface/link layer protocols is handled by
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13 | a917d384 | pbrook | * the host adapter emulation.
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14 | 2e5d83bb | pbrook | */
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15 | 2e5d83bb | pbrook | |
16 | 2e5d83bb | pbrook | //#define DEBUG_SCSI
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17 | 2e5d83bb | pbrook | |
18 | 2e5d83bb | pbrook | #ifdef DEBUG_SCSI
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19 | 2e5d83bb | pbrook | #define DPRINTF(fmt, args...) \
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20 | 2e5d83bb | pbrook | do { printf("scsi-disk: " fmt , ##args); } while (0) |
21 | 2e5d83bb | pbrook | #else
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22 | 2e5d83bb | pbrook | #define DPRINTF(fmt, args...) do {} while(0) |
23 | 2e5d83bb | pbrook | #endif
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24 | 2e5d83bb | pbrook | |
25 | 2e5d83bb | pbrook | #define BADF(fmt, args...) \
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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 | a917d384 | pbrook | SCSIDevice *dev; |
41 | 2e5d83bb | pbrook | uint32_t tag; |
42 | 2e5d83bb | pbrook | /* ??? We should probably keep track of whether the data trasfer is
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43 | 2e5d83bb | pbrook | a read or a write. Currently we rely on the host getting it right. */
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44 | a917d384 | pbrook | /* Both sector and sector_count are in terms of qemu 512 byte blocks. */
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45 | 2e5d83bb | pbrook | int sector;
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46 | 2e5d83bb | pbrook | int sector_count;
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47 | a917d384 | pbrook | /* The amounnt of data in the buffer. */
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48 | 2e5d83bb | pbrook | int buf_len;
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49 | a917d384 | pbrook | uint8_t dma_buf[SCSI_DMA_BUF_SIZE]; |
50 | 4d611c9a | pbrook | BlockDriverAIOCB *aiocb; |
51 | a917d384 | pbrook | struct SCSIRequest *next;
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52 | a917d384 | pbrook | } SCSIRequest; |
53 | a917d384 | pbrook | |
54 | a917d384 | pbrook | struct SCSIDevice
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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.
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59 | a917d384 | pbrook | This is the number of 512 byte blocks in a single scsi sector. */
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60 | a917d384 | pbrook | int cluster_size;
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61 | a917d384 | pbrook | int sense;
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62 | a917d384 | pbrook | int tcq;
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63 | 4d611c9a | pbrook | /* Completion functions may be called from either scsi_{read,write}_data
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64 | 4d611c9a | pbrook | or from the AIO completion routines. */
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65 | 2e5d83bb | pbrook | scsi_completionfn completion; |
66 | 2e5d83bb | pbrook | void *opaque;
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67 | 2e5d83bb | pbrook | }; |
68 | 2e5d83bb | pbrook | |
69 | a917d384 | pbrook | /* Global pool of SCSIRequest structures. */
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70 | a917d384 | pbrook | static SCSIRequest *free_requests = NULL; |
71 | a917d384 | pbrook | |
72 | a917d384 | pbrook | static SCSIRequest *scsi_new_request(SCSIDevice *s, uint32_t tag)
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73 | 2e5d83bb | pbrook | { |
74 | a917d384 | pbrook | SCSIRequest *r; |
75 | a917d384 | pbrook | |
76 | a917d384 | pbrook | if (free_requests) {
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77 | a917d384 | pbrook | r = free_requests; |
78 | a917d384 | pbrook | free_requests = r->next; |
79 | a917d384 | pbrook | } else {
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80 | a917d384 | pbrook | r = qemu_malloc(sizeof(SCSIRequest));
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81 | a917d384 | pbrook | } |
82 | a917d384 | pbrook | r->dev = s; |
83 | a917d384 | pbrook | r->tag = tag; |
84 | a917d384 | pbrook | r->sector_count = 0;
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85 | a917d384 | pbrook | r->buf_len = 0;
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86 | a917d384 | pbrook | r->aiocb = NULL;
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87 | a917d384 | pbrook | |
88 | a917d384 | pbrook | r->next = s->requests; |
89 | a917d384 | pbrook | s->requests = r; |
90 | a917d384 | pbrook | return r;
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91 | 2e5d83bb | pbrook | } |
92 | 2e5d83bb | pbrook | |
93 | a917d384 | pbrook | static void scsi_remove_request(SCSIRequest *r) |
94 | 4d611c9a | pbrook | { |
95 | a917d384 | pbrook | SCSIRequest *last; |
96 | a917d384 | pbrook | SCSIDevice *s = r->dev; |
97 | a917d384 | pbrook | |
98 | a917d384 | pbrook | if (s->requests == r) {
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99 | a917d384 | pbrook | s->requests = r->next; |
100 | a917d384 | pbrook | } else {
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101 | a917d384 | pbrook | last = s->requests; |
102 | a917d384 | pbrook | while (last && last->next != r)
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103 | a917d384 | pbrook | last = last->next; |
104 | a917d384 | pbrook | if (last) {
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105 | a917d384 | pbrook | last->next = r->next; |
106 | a917d384 | pbrook | } else {
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107 | a917d384 | pbrook | BADF("Orphaned request\n");
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108 | a917d384 | pbrook | } |
109 | a917d384 | pbrook | } |
110 | a917d384 | pbrook | r->next = free_requests; |
111 | a917d384 | pbrook | free_requests = r; |
112 | 4d611c9a | pbrook | } |
113 | 4d611c9a | pbrook | |
114 | a917d384 | pbrook | static SCSIRequest *scsi_find_request(SCSIDevice *s, uint32_t tag)
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115 | 4d611c9a | pbrook | { |
116 | a917d384 | pbrook | SCSIRequest *r; |
117 | 4d611c9a | pbrook | |
118 | a917d384 | pbrook | r = s->requests; |
119 | a917d384 | pbrook | while (r && r->tag != tag)
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120 | a917d384 | pbrook | r = r->next; |
121 | 4d611c9a | pbrook | |
122 | a917d384 | pbrook | return r;
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123 | a917d384 | pbrook | } |
124 | a917d384 | pbrook | |
125 | a917d384 | pbrook | /* Helper function for command completion. */
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126 | a917d384 | pbrook | static void scsi_command_complete(SCSIRequest *r, int sense) |
127 | a917d384 | pbrook | { |
128 | a917d384 | pbrook | SCSIDevice *s = r->dev; |
129 | a917d384 | pbrook | uint32_t tag; |
130 | a917d384 | pbrook | DPRINTF("Command complete tag=0x%x sense=%d\n", r->tag, sense);
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131 | a917d384 | pbrook | s->sense = sense; |
132 | a917d384 | pbrook | tag = r->tag; |
133 | a917d384 | pbrook | scsi_remove_request(r); |
134 | a917d384 | pbrook | s->completion(s->opaque, SCSI_REASON_DONE, tag, sense); |
135 | 4d611c9a | pbrook | } |
136 | 4d611c9a | pbrook | |
137 | 4d611c9a | pbrook | /* Cancel a pending data transfer. */
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138 | a917d384 | pbrook | void scsi_cancel_io(SCSIDevice *s, uint32_t tag)
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139 | 4d611c9a | pbrook | { |
140 | a917d384 | pbrook | SCSIRequest *r; |
141 | a917d384 | pbrook | DPRINTF("Cancel tag=0x%x\n", tag);
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142 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
143 | a917d384 | pbrook | if (r) {
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144 | a917d384 | pbrook | if (r->aiocb)
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145 | a917d384 | pbrook | bdrv_aio_cancel(r->aiocb); |
146 | a917d384 | pbrook | r->aiocb = NULL;
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147 | a917d384 | pbrook | scsi_remove_request(r); |
148 | a917d384 | pbrook | } |
149 | a917d384 | pbrook | } |
150 | a917d384 | pbrook | |
151 | a917d384 | pbrook | static void scsi_read_complete(void * opaque, int ret) |
152 | a917d384 | pbrook | { |
153 | a917d384 | pbrook | SCSIRequest *r = (SCSIRequest *)opaque; |
154 | a917d384 | pbrook | SCSIDevice *s = r->dev; |
155 | a917d384 | pbrook | |
156 | a917d384 | pbrook | if (ret) {
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157 | a917d384 | pbrook | DPRINTF("IO error\n");
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158 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
159 | 4d611c9a | pbrook | return;
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160 | 4d611c9a | pbrook | } |
161 | a917d384 | pbrook | DPRINTF("Data ready tag=0x%x len=%d\n", r->tag, r->buf_len);
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162 | a917d384 | pbrook | |
163 | a917d384 | pbrook | s->completion(s->opaque, SCSI_REASON_DATA, r->tag, r->buf_len); |
164 | 4d611c9a | pbrook | } |
165 | 4d611c9a | pbrook | |
166 | a917d384 | pbrook | /* Read more data from scsi device into buffer. */
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167 | a917d384 | pbrook | void scsi_read_data(SCSIDevice *s, uint32_t tag)
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168 | 2e5d83bb | pbrook | { |
169 | a917d384 | pbrook | SCSIRequest *r; |
170 | 2e5d83bb | pbrook | uint32_t n; |
171 | 2e5d83bb | pbrook | |
172 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
173 | a917d384 | pbrook | if (!r) {
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174 | a917d384 | pbrook | BADF("Bad read tag 0x%x\n", tag);
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175 | a917d384 | pbrook | /* ??? This is the wrong error. */
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176 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
177 | a917d384 | pbrook | return;
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178 | 2e5d83bb | pbrook | } |
179 | a917d384 | pbrook | if (r->sector_count == (uint32_t)-1) { |
180 | a917d384 | pbrook | DPRINTF("Read buf_len=%d\n", r->buf_len);
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181 | a917d384 | pbrook | r->sector_count = 0;
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182 | a917d384 | pbrook | s->completion(s->opaque, SCSI_REASON_DATA, r->tag, r->buf_len); |
183 | a917d384 | pbrook | return;
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184 | 2e5d83bb | pbrook | } |
185 | a917d384 | pbrook | DPRINTF("Read sector_count=%d\n", r->sector_count);
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186 | a917d384 | pbrook | if (r->sector_count == 0) { |
187 | a917d384 | pbrook | scsi_command_complete(r, SENSE_NO_SENSE); |
188 | a917d384 | pbrook | return;
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189 | 2e5d83bb | pbrook | } |
190 | 2e5d83bb | pbrook | |
191 | a917d384 | pbrook | n = r->sector_count; |
192 | a917d384 | pbrook | if (n > SCSI_DMA_BUF_SIZE / 512) |
193 | a917d384 | pbrook | n = SCSI_DMA_BUF_SIZE / 512;
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194 | a917d384 | pbrook | |
195 | a917d384 | pbrook | r->buf_len = n * 512;
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196 | a917d384 | pbrook | r->aiocb = bdrv_aio_read(s->bdrv, r->sector, r->dma_buf, n, |
197 | a917d384 | pbrook | scsi_read_complete, r); |
198 | a917d384 | pbrook | if (r->aiocb == NULL) |
199 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
200 | a917d384 | pbrook | r->sector += n; |
201 | a917d384 | pbrook | r->sector_count -= n; |
202 | 2e5d83bb | pbrook | } |
203 | 2e5d83bb | pbrook | |
204 | 4d611c9a | pbrook | static void scsi_write_complete(void * opaque, int ret) |
205 | 4d611c9a | pbrook | { |
206 | a917d384 | pbrook | SCSIRequest *r = (SCSIRequest *)opaque; |
207 | a917d384 | pbrook | SCSIDevice *s = r->dev; |
208 | a917d384 | pbrook | uint32_t len; |
209 | 4d611c9a | pbrook | |
210 | 4d611c9a | pbrook | if (ret) {
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211 | 4d611c9a | pbrook | fprintf(stderr, "scsi-disc: IO write error\n");
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212 | 4d611c9a | pbrook | exit(1);
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213 | 4d611c9a | pbrook | } |
214 | 4d611c9a | pbrook | |
215 | a917d384 | pbrook | r->aiocb = NULL;
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216 | a917d384 | pbrook | if (r->sector_count == 0) { |
217 | a917d384 | pbrook | scsi_command_complete(r, SENSE_NO_SENSE); |
218 | a917d384 | pbrook | } else {
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219 | a917d384 | pbrook | len = r->sector_count * 512;
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220 | a917d384 | pbrook | if (len > SCSI_DMA_BUF_SIZE) {
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221 | a917d384 | pbrook | len = SCSI_DMA_BUF_SIZE; |
222 | a917d384 | pbrook | } |
223 | a917d384 | pbrook | r->buf_len = len; |
224 | a917d384 | pbrook | DPRINTF("Write complete tag=0x%x more=%d\n", r->tag, len);
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225 | a917d384 | pbrook | s->completion(s->opaque, SCSI_REASON_DATA, r->tag, len); |
226 | 4d611c9a | pbrook | } |
227 | 4d611c9a | pbrook | } |
228 | 4d611c9a | pbrook | |
229 | 4d611c9a | pbrook | /* Write data to a scsi device. Returns nonzero on failure.
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230 | 4d611c9a | pbrook | The transfer may complete asynchronously. */
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231 | a917d384 | pbrook | int scsi_write_data(SCSIDevice *s, uint32_t tag)
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232 | 2e5d83bb | pbrook | { |
233 | a917d384 | pbrook | SCSIRequest *r; |
234 | 2e5d83bb | pbrook | uint32_t n; |
235 | 2e5d83bb | pbrook | |
236 | a917d384 | pbrook | DPRINTF("Write data tag=0x%x\n", tag);
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237 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
238 | a917d384 | pbrook | if (!r) {
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239 | a917d384 | pbrook | BADF("Bad write tag 0x%x\n", tag);
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240 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
241 | 2e5d83bb | pbrook | return 1; |
242 | 2e5d83bb | pbrook | } |
243 | a917d384 | pbrook | if (r->aiocb)
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244 | a917d384 | pbrook | BADF("Data transfer already in progress\n");
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245 | a917d384 | pbrook | n = r->buf_len / 512;
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246 | a917d384 | pbrook | if (n) {
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247 | a917d384 | pbrook | r->aiocb = bdrv_aio_write(s->bdrv, r->sector, r->dma_buf, n, |
248 | a917d384 | pbrook | scsi_write_complete, r); |
249 | a917d384 | pbrook | if (r->aiocb == NULL) |
250 | a917d384 | pbrook | scsi_command_complete(r, SENSE_HARDWARE_ERROR); |
251 | a917d384 | pbrook | r->sector += n; |
252 | a917d384 | pbrook | r->sector_count -= n; |
253 | a917d384 | pbrook | } else {
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254 | a917d384 | pbrook | /* Invoke completion routine to fetch data from host. */
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255 | a917d384 | pbrook | scsi_write_complete(r, 0);
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256 | 2e5d83bb | pbrook | } |
257 | 2e5d83bb | pbrook | |
258 | a917d384 | pbrook | return 0; |
259 | a917d384 | pbrook | } |
260 | 2e5d83bb | pbrook | |
261 | a917d384 | pbrook | /* Return a pointer to the data buffer. */
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262 | a917d384 | pbrook | uint8_t *scsi_get_buf(SCSIDevice *s, uint32_t tag) |
263 | a917d384 | pbrook | { |
264 | a917d384 | pbrook | SCSIRequest *r; |
265 | 2e5d83bb | pbrook | |
266 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
267 | a917d384 | pbrook | if (!r) {
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268 | a917d384 | pbrook | BADF("Bad buffer tag 0x%x\n", tag);
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269 | a917d384 | pbrook | return NULL; |
270 | 4d611c9a | pbrook | } |
271 | a917d384 | pbrook | return r->dma_buf;
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272 | 2e5d83bb | pbrook | } |
273 | 2e5d83bb | pbrook | |
274 | 2e5d83bb | pbrook | /* Execute a scsi command. Returns the length of the data expected by the
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275 | 2e5d83bb | pbrook | command. This will be Positive for data transfers from the device
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276 | 2e5d83bb | pbrook | (eg. disk reads), negative for transfers to the device (eg. disk writes),
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277 | 2e5d83bb | pbrook | and zero if the command does not transfer any data. */
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278 | 2e5d83bb | pbrook | |
279 | 0fc5c15a | pbrook | int32_t scsi_send_command(SCSIDevice *s, uint32_t tag, uint8_t *buf, int lun)
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280 | 2e5d83bb | pbrook | { |
281 | 2e5d83bb | pbrook | int64_t nb_sectors; |
282 | 2e5d83bb | pbrook | uint32_t lba; |
283 | 2e5d83bb | pbrook | uint32_t len; |
284 | 2e5d83bb | pbrook | int cmdlen;
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285 | 2e5d83bb | pbrook | int is_write;
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286 | a917d384 | pbrook | uint8_t command; |
287 | a917d384 | pbrook | uint8_t *outbuf; |
288 | a917d384 | pbrook | SCSIRequest *r; |
289 | a917d384 | pbrook | |
290 | a917d384 | pbrook | command = buf[0];
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291 | a917d384 | pbrook | r = scsi_find_request(s, tag); |
292 | a917d384 | pbrook | if (r) {
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293 | a917d384 | pbrook | BADF("Tag 0x%x already in use\n", tag);
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294 | a917d384 | pbrook | scsi_cancel_io(s, tag); |
295 | a917d384 | pbrook | } |
296 | a917d384 | pbrook | /* ??? Tags are not unique for different luns. We only implement a
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297 | a917d384 | pbrook | single lun, so this should not matter. */
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298 | a917d384 | pbrook | r = scsi_new_request(s, tag); |
299 | a917d384 | pbrook | outbuf = r->dma_buf; |
300 | 2e5d83bb | pbrook | is_write = 0;
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301 | a917d384 | pbrook | DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]); |
302 | a917d384 | pbrook | switch (command >> 5) { |
303 | 2e5d83bb | pbrook | case 0: |
304 | 2e5d83bb | pbrook | lba = buf[3] | (buf[2] << 8) | ((buf[1] & 0x1f) << 16); |
305 | 2e5d83bb | pbrook | len = buf[4];
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306 | 2e5d83bb | pbrook | cmdlen = 6;
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307 | 2e5d83bb | pbrook | break;
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308 | 2e5d83bb | pbrook | case 1: |
309 | 2e5d83bb | pbrook | case 2: |
310 | 2e5d83bb | pbrook | lba = buf[5] | (buf[4] << 8) | (buf[3] << 16) | (buf[2] << 24); |
311 | 2e5d83bb | pbrook | len = buf[8] | (buf[7] << 8); |
312 | 2e5d83bb | pbrook | cmdlen = 10;
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313 | 2e5d83bb | pbrook | break;
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314 | 2e5d83bb | pbrook | case 4: |
315 | 2e5d83bb | pbrook | lba = buf[5] | (buf[4] << 8) | (buf[3] << 16) | (buf[2] << 24); |
316 | 2e5d83bb | pbrook | len = buf[13] | (buf[12] << 8) | (buf[11] << 16) | (buf[10] << 24); |
317 | 2e5d83bb | pbrook | cmdlen = 16;
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318 | 2e5d83bb | pbrook | break;
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319 | 2e5d83bb | pbrook | case 5: |
320 | 2e5d83bb | pbrook | lba = buf[5] | (buf[4] << 8) | (buf[3] << 16) | (buf[2] << 24); |
321 | 2e5d83bb | pbrook | len = buf[9] | (buf[8] << 8) | (buf[7] << 16) | (buf[6] << 24); |
322 | 2e5d83bb | pbrook | cmdlen = 12;
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323 | 2e5d83bb | pbrook | break;
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324 | 2e5d83bb | pbrook | default:
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325 | a917d384 | pbrook | BADF("Unsupported command length, command %x\n", command);
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326 | 2e5d83bb | pbrook | goto fail;
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327 | 2e5d83bb | pbrook | } |
328 | 2e5d83bb | pbrook | #ifdef DEBUG_SCSI
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329 | 2e5d83bb | pbrook | { |
330 | 2e5d83bb | pbrook | int i;
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331 | 2e5d83bb | pbrook | for (i = 1; i < cmdlen; i++) { |
332 | 2e5d83bb | pbrook | printf(" 0x%02x", buf[i]);
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333 | 2e5d83bb | pbrook | } |
334 | 2e5d83bb | pbrook | printf("\n");
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335 | 2e5d83bb | pbrook | } |
336 | 2e5d83bb | pbrook | #endif
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337 | 0fc5c15a | pbrook | if (lun || buf[1] >> 5) { |
338 | 2e5d83bb | pbrook | /* Only LUN 0 supported. */
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339 | 0fc5c15a | pbrook | DPRINTF("Unimplemented LUN %d\n", lun ? lun : buf[1] >> 5); |
340 | 2e5d83bb | pbrook | goto fail;
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341 | 2e5d83bb | pbrook | } |
342 | a917d384 | pbrook | switch (command) {
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343 | 2e5d83bb | pbrook | case 0x0: |
344 | 2e5d83bb | pbrook | DPRINTF("Test Unit Ready\n");
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345 | 2e5d83bb | pbrook | break;
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346 | 2e5d83bb | pbrook | case 0x03: |
347 | 2e5d83bb | pbrook | DPRINTF("Request Sense (len %d)\n", len);
|
348 | 2e5d83bb | pbrook | if (len < 4) |
349 | 2e5d83bb | pbrook | goto fail;
|
350 | 67cd24a8 | ths | memset(outbuf, 0, 4); |
351 | a917d384 | pbrook | outbuf[0] = 0xf0; |
352 | a917d384 | pbrook | outbuf[1] = 0; |
353 | a917d384 | pbrook | outbuf[2] = s->sense;
|
354 | a917d384 | pbrook | r->buf_len = 4;
|
355 | 2e5d83bb | pbrook | break;
|
356 | 2e5d83bb | pbrook | case 0x12: |
357 | 7d8406be | pbrook | DPRINTF("Inquiry (len %d)\n", len);
|
358 | 2e5d83bb | pbrook | if (len < 36) { |
359 | 2e5d83bb | pbrook | BADF("Inquiry buffer too small (%d)\n", len);
|
360 | 2e5d83bb | pbrook | } |
361 | a917d384 | pbrook | memset(outbuf, 0, 36); |
362 | 2e5d83bb | pbrook | if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) {
|
363 | a917d384 | pbrook | outbuf[0] = 5; |
364 | a917d384 | pbrook | outbuf[1] = 0x80; |
365 | a917d384 | pbrook | memcpy(&outbuf[16], "QEMU CD-ROM ", 16); |
366 | 2e5d83bb | pbrook | } else {
|
367 | a917d384 | pbrook | outbuf[0] = 0; |
368 | a917d384 | pbrook | memcpy(&outbuf[16], "QEMU HARDDISK ", 16); |
369 | 2e5d83bb | pbrook | } |
370 | a917d384 | pbrook | memcpy(&outbuf[8], "QEMU ", 8); |
371 | a917d384 | pbrook | memcpy(&outbuf[32], QEMU_VERSION, 4); |
372 | 17acfe32 | pbrook | /* Identify device as SCSI-3 rev 1.
|
373 | 17acfe32 | pbrook | Some later commands are also implemented. */
|
374 | a917d384 | pbrook | outbuf[2] = 3; |
375 | a917d384 | pbrook | outbuf[3] = 2; /* Format 2 */ |
376 | 67cd24a8 | ths | outbuf[4] = 31; |
377 | a917d384 | pbrook | /* Sync data transfer and TCQ. */
|
378 | a917d384 | pbrook | outbuf[7] = 0x10 | (s->tcq ? 0x02 : 0); |
379 | a917d384 | pbrook | r->buf_len = 36;
|
380 | 2e5d83bb | pbrook | break;
|
381 | 2e5d83bb | pbrook | case 0x16: |
382 | 2e5d83bb | pbrook | DPRINTF("Reserve(6)\n");
|
383 | 2e5d83bb | pbrook | if (buf[1] & 1) |
384 | 2e5d83bb | pbrook | goto fail;
|
385 | 2e5d83bb | pbrook | break;
|
386 | 2e5d83bb | pbrook | case 0x17: |
387 | 2e5d83bb | pbrook | DPRINTF("Release(6)\n");
|
388 | 2e5d83bb | pbrook | if (buf[1] & 1) |
389 | 2e5d83bb | pbrook | goto fail;
|
390 | 2e5d83bb | pbrook | break;
|
391 | 2e5d83bb | pbrook | case 0x1a: |
392 | 7d8406be | pbrook | case 0x5a: |
393 | 17acfe32 | pbrook | { |
394 | a917d384 | pbrook | uint8_t *p; |
395 | 17acfe32 | pbrook | int page;
|
396 | 17acfe32 | pbrook | |
397 | 17acfe32 | pbrook | page = buf[2] & 0x3f; |
398 | 17acfe32 | pbrook | DPRINTF("Mode Sense (page %d, len %d)\n", page, len);
|
399 | a917d384 | pbrook | p = outbuf; |
400 | 17acfe32 | pbrook | memset(p, 0, 4); |
401 | a917d384 | pbrook | outbuf[1] = 0; /* Default media type. */ |
402 | a917d384 | pbrook | outbuf[3] = 0; /* Block descriptor length. */ |
403 | 17acfe32 | pbrook | if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) {
|
404 | a917d384 | pbrook | outbuf[2] = 0x80; /* Readonly. */ |
405 | 17acfe32 | pbrook | } |
406 | 17acfe32 | pbrook | p += 4;
|
407 | 17acfe32 | pbrook | if ((page == 8 || page == 0x3f)) { |
408 | 17acfe32 | pbrook | /* Caching page. */
|
409 | 67cd24a8 | ths | memset(p,0,20); |
410 | 17acfe32 | pbrook | p[0] = 8; |
411 | 17acfe32 | pbrook | p[1] = 0x12; |
412 | 17acfe32 | pbrook | p[2] = 4; /* WCE */ |
413 | 67cd24a8 | ths | p += 20;
|
414 | 17acfe32 | pbrook | } |
415 | 17acfe32 | pbrook | if ((page == 0x3f || page == 0x2a) |
416 | 17acfe32 | pbrook | && (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM)) { |
417 | 17acfe32 | pbrook | /* CD Capabilities and Mechanical Status page. */
|
418 | 17acfe32 | pbrook | p[0] = 0x2a; |
419 | 17acfe32 | pbrook | p[1] = 0x14; |
420 | 17acfe32 | pbrook | p[2] = 3; // CD-R & CD-RW read |
421 | 17acfe32 | pbrook | p[3] = 0; // Writing not supported |
422 | 17acfe32 | pbrook | p[4] = 0x7f; /* Audio, composite, digital out, |
423 | 17acfe32 | pbrook | mode 2 form 1&2, multi session */
|
424 | 17acfe32 | pbrook | p[5] = 0xff; /* CD DA, DA accurate, RW supported, |
425 | 17acfe32 | pbrook | RW corrected, C2 errors, ISRC,
|
426 | 17acfe32 | pbrook | UPC, Bar code */
|
427 | 17acfe32 | pbrook | p[6] = 0x2d | (bdrv_is_locked(s->bdrv)? 2 : 0); |
428 | 17acfe32 | pbrook | /* Locking supported, jumper present, eject, tray */
|
429 | 17acfe32 | pbrook | p[7] = 0; /* no volume & mute control, no |
430 | 17acfe32 | pbrook | changer */
|
431 | 17acfe32 | pbrook | p[8] = (50 * 176) >> 8; // 50x read speed |
432 | 17acfe32 | pbrook | p[9] = (50 * 176) & 0xff; |
433 | 17acfe32 | pbrook | p[10] = 0 >> 8; // No volume |
434 | 17acfe32 | pbrook | p[11] = 0 & 0xff; |
435 | 17acfe32 | pbrook | p[12] = 2048 >> 8; // 2M buffer |
436 | 17acfe32 | pbrook | p[13] = 2048 & 0xff; |
437 | 17acfe32 | pbrook | p[14] = (16 * 176) >> 8; // 16x read speed current |
438 | 17acfe32 | pbrook | p[15] = (16 * 176) & 0xff; |
439 | 17acfe32 | pbrook | p[18] = (16 * 176) >> 8; // 16x write speed |
440 | 17acfe32 | pbrook | p[19] = (16 * 176) & 0xff; |
441 | 17acfe32 | pbrook | p[20] = (16 * 176) >> 8; // 16x write speed current |
442 | 17acfe32 | pbrook | p[21] = (16 * 176) & 0xff; |
443 | 67cd24a8 | ths | p += 22;
|
444 | 17acfe32 | pbrook | } |
445 | a917d384 | pbrook | r->buf_len = p - outbuf; |
446 | a917d384 | pbrook | outbuf[0] = r->buf_len - 4; |
447 | a917d384 | pbrook | if (r->buf_len > len)
|
448 | a917d384 | pbrook | r->buf_len = len; |
449 | 7d8406be | pbrook | } |
450 | 17acfe32 | pbrook | break;
|
451 | 17acfe32 | pbrook | case 0x1b: |
452 | 17acfe32 | pbrook | DPRINTF("Start Stop Unit\n");
|
453 | 17acfe32 | pbrook | break;
|
454 | 17acfe32 | pbrook | case 0x1e: |
455 | 17acfe32 | pbrook | DPRINTF("Prevent Allow Medium Removal (prevent = %d)\n", buf[4] & 3); |
456 | 17acfe32 | pbrook | bdrv_set_locked(s->bdrv, buf[4] & 1); |
457 | 2e5d83bb | pbrook | break;
|
458 | 2e5d83bb | pbrook | case 0x25: |
459 | 2e5d83bb | pbrook | DPRINTF("Read Capacity\n");
|
460 | 2e5d83bb | pbrook | /* The normal LEN field for this command is zero. */
|
461 | a917d384 | pbrook | memset(outbuf, 0, 8); |
462 | 2e5d83bb | pbrook | bdrv_get_geometry(s->bdrv, &nb_sectors); |
463 | 51c1ebb1 | pbrook | /* Returned value is the address of the last sector. */
|
464 | 51c1ebb1 | pbrook | if (nb_sectors) {
|
465 | 51c1ebb1 | pbrook | nb_sectors--; |
466 | a917d384 | pbrook | outbuf[0] = (nb_sectors >> 24) & 0xff; |
467 | a917d384 | pbrook | outbuf[1] = (nb_sectors >> 16) & 0xff; |
468 | a917d384 | pbrook | outbuf[2] = (nb_sectors >> 8) & 0xff; |
469 | a917d384 | pbrook | outbuf[3] = nb_sectors & 0xff; |
470 | a917d384 | pbrook | outbuf[4] = 0; |
471 | a917d384 | pbrook | outbuf[5] = 0; |
472 | a917d384 | pbrook | outbuf[6] = s->cluster_size * 2; |
473 | a917d384 | pbrook | outbuf[7] = 0; |
474 | a917d384 | pbrook | r->buf_len = 8;
|
475 | 51c1ebb1 | pbrook | } else {
|
476 | a917d384 | pbrook | scsi_command_complete(r, SENSE_NOT_READY); |
477 | 35f1df84 | pbrook | return 0; |
478 | 51c1ebb1 | pbrook | } |
479 | 2e5d83bb | pbrook | break;
|
480 | 2e5d83bb | pbrook | case 0x08: |
481 | 2e5d83bb | pbrook | case 0x28: |
482 | 2e5d83bb | pbrook | DPRINTF("Read (sector %d, count %d)\n", lba, len);
|
483 | a917d384 | pbrook | r->sector = lba * s->cluster_size; |
484 | a917d384 | pbrook | r->sector_count = len * s->cluster_size; |
485 | 2e5d83bb | pbrook | break;
|
486 | 2e5d83bb | pbrook | case 0x0a: |
487 | 2e5d83bb | pbrook | case 0x2a: |
488 | 2e5d83bb | pbrook | DPRINTF("Write (sector %d, count %d)\n", lba, len);
|
489 | a917d384 | pbrook | r->sector = lba * s->cluster_size; |
490 | a917d384 | pbrook | r->sector_count = len * s->cluster_size; |
491 | 2e5d83bb | pbrook | is_write = 1;
|
492 | 2e5d83bb | pbrook | break;
|
493 | 7d8406be | pbrook | case 0x35: |
494 | e91c8a77 | ths | DPRINTF("Synchronise cache (sector %d, count %d)\n", lba, len);
|
495 | 7a6cba61 | pbrook | bdrv_flush(s->bdrv); |
496 | 7d8406be | pbrook | break;
|
497 | 2e5d83bb | pbrook | case 0x43: |
498 | 2e5d83bb | pbrook | { |
499 | 7c22dd52 | pbrook | int start_track, format, msf, toclen;
|
500 | 2e5d83bb | pbrook | |
501 | 2e5d83bb | pbrook | msf = buf[1] & 2; |
502 | 2e5d83bb | pbrook | format = buf[2] & 0xf; |
503 | 2e5d83bb | pbrook | start_track = buf[6];
|
504 | 2e5d83bb | pbrook | bdrv_get_geometry(s->bdrv, &nb_sectors); |
505 | 2e5d83bb | pbrook | DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1); |
506 | 2e5d83bb | pbrook | switch(format) {
|
507 | 2e5d83bb | pbrook | case 0: |
508 | a917d384 | pbrook | toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); |
509 | 2e5d83bb | pbrook | break;
|
510 | 2e5d83bb | pbrook | case 1: |
511 | 2e5d83bb | pbrook | /* multi session : only a single session defined */
|
512 | 7c22dd52 | pbrook | toclen = 12;
|
513 | a917d384 | pbrook | memset(outbuf, 0, 12); |
514 | a917d384 | pbrook | outbuf[1] = 0x0a; |
515 | a917d384 | pbrook | outbuf[2] = 0x01; |
516 | a917d384 | pbrook | outbuf[3] = 0x01; |
517 | 2e5d83bb | pbrook | break;
|
518 | 2e5d83bb | pbrook | case 2: |
519 | a917d384 | pbrook | toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); |
520 | 2e5d83bb | pbrook | break;
|
521 | 2e5d83bb | pbrook | default:
|
522 | 7c22dd52 | pbrook | goto error_cmd;
|
523 | 7c22dd52 | pbrook | } |
524 | 7c22dd52 | pbrook | if (toclen > 0) { |
525 | 7c22dd52 | pbrook | if (len > toclen)
|
526 | 7c22dd52 | pbrook | len = toclen; |
527 | a917d384 | pbrook | r->buf_len = len; |
528 | 7c22dd52 | pbrook | break;
|
529 | 2e5d83bb | pbrook | } |
530 | 7c22dd52 | pbrook | error_cmd:
|
531 | 7c22dd52 | pbrook | DPRINTF("Read TOC error\n");
|
532 | 7c22dd52 | pbrook | goto fail;
|
533 | 2e5d83bb | pbrook | } |
534 | 17acfe32 | pbrook | case 0x46: |
535 | 17acfe32 | pbrook | DPRINTF("Get Configuration (rt %d, maxlen %d)\n", buf[1] & 3, len); |
536 | a917d384 | pbrook | memset(outbuf, 0, 8); |
537 | 17acfe32 | pbrook | /* ??? This shoud probably return much more information. For now
|
538 | 17acfe32 | pbrook | just return the basic header indicating the CD-ROM profile. */
|
539 | a917d384 | pbrook | outbuf[7] = 8; // CD-ROM |
540 | a917d384 | pbrook | r->buf_len = 8;
|
541 | 17acfe32 | pbrook | break;
|
542 | 2e5d83bb | pbrook | case 0x56: |
543 | 2e5d83bb | pbrook | DPRINTF("Reserve(10)\n");
|
544 | 2e5d83bb | pbrook | if (buf[1] & 3) |
545 | 2e5d83bb | pbrook | goto fail;
|
546 | 2e5d83bb | pbrook | break;
|
547 | 2e5d83bb | pbrook | case 0x57: |
548 | 2e5d83bb | pbrook | DPRINTF("Release(10)\n");
|
549 | 2e5d83bb | pbrook | if (buf[1] & 3) |
550 | 2e5d83bb | pbrook | goto fail;
|
551 | 2e5d83bb | pbrook | break;
|
552 | 2e5d83bb | pbrook | case 0xa0: |
553 | 2e5d83bb | pbrook | DPRINTF("Report LUNs (len %d)\n", len);
|
554 | 2e5d83bb | pbrook | if (len < 16) |
555 | 2e5d83bb | pbrook | goto fail;
|
556 | a917d384 | pbrook | memset(outbuf, 0, 16); |
557 | a917d384 | pbrook | outbuf[3] = 8; |
558 | a917d384 | pbrook | r->buf_len = 16;
|
559 | 2e5d83bb | pbrook | break;
|
560 | 2e5d83bb | pbrook | default:
|
561 | 2e5d83bb | pbrook | DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); |
562 | 2e5d83bb | pbrook | fail:
|
563 | a917d384 | pbrook | scsi_command_complete(r, SENSE_ILLEGAL_REQUEST); |
564 | 2e5d83bb | pbrook | return 0; |
565 | 2e5d83bb | pbrook | } |
566 | a917d384 | pbrook | if (r->sector_count == 0 && r->buf_len == 0) { |
567 | a917d384 | pbrook | scsi_command_complete(r, SENSE_NO_SENSE); |
568 | a917d384 | pbrook | } |
569 | a917d384 | pbrook | len = r->sector_count * 512 + r->buf_len;
|
570 | a917d384 | pbrook | if (is_write) {
|
571 | a917d384 | pbrook | return -len;
|
572 | a917d384 | pbrook | } else {
|
573 | a917d384 | pbrook | if (!r->sector_count)
|
574 | a917d384 | pbrook | r->sector_count = -1;
|
575 | a917d384 | pbrook | return len;
|
576 | 2e5d83bb | pbrook | } |
577 | 2e5d83bb | pbrook | } |
578 | 2e5d83bb | pbrook | |
579 | 2e5d83bb | pbrook | void scsi_disk_destroy(SCSIDevice *s)
|
580 | 2e5d83bb | pbrook | { |
581 | 2e5d83bb | pbrook | qemu_free(s); |
582 | 2e5d83bb | pbrook | } |
583 | 2e5d83bb | pbrook | |
584 | 2e5d83bb | pbrook | SCSIDevice *scsi_disk_init(BlockDriverState *bdrv, |
585 | a917d384 | pbrook | int tcq,
|
586 | 2e5d83bb | pbrook | scsi_completionfn completion, |
587 | 2e5d83bb | pbrook | void *opaque)
|
588 | 2e5d83bb | pbrook | { |
589 | 2e5d83bb | pbrook | SCSIDevice *s; |
590 | 2e5d83bb | pbrook | |
591 | 2e5d83bb | pbrook | s = (SCSIDevice *)qemu_mallocz(sizeof(SCSIDevice));
|
592 | 2e5d83bb | pbrook | s->bdrv = bdrv; |
593 | a917d384 | pbrook | s->tcq = tcq; |
594 | 2e5d83bb | pbrook | s->completion = completion; |
595 | 2e5d83bb | pbrook | s->opaque = opaque; |
596 | 2e5d83bb | pbrook | if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) {
|
597 | 7c22dd52 | pbrook | s->cluster_size = 4;
|
598 | 2e5d83bb | pbrook | } else {
|
599 | 7c22dd52 | pbrook | s->cluster_size = 1;
|
600 | 2e5d83bb | pbrook | } |
601 | 2e5d83bb | pbrook | |
602 | 2e5d83bb | pbrook | return s;
|
603 | 2e5d83bb | pbrook | } |