Commit | Line | Data |
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1da177e4 LT |
1 | /* -*-linux-c-*- |
2 | ||
3 | * vendor-specific code for SCSI CD-ROM's goes here. | |
4 | * | |
5 | * This is needed becauce most of the new features (multisession and | |
6 | * the like) are too new to be included into the SCSI-II standard (to | |
7 | * be exact: there is'nt anything in my draft copy). | |
8 | * | |
9 | * Aug 1997: Ha! Got a SCSI-3 cdrom spec across my fingers. SCSI-3 does | |
10 | * multisession using the READ TOC command (like SONY). | |
11 | * | |
12 | * Rearranged stuff here: SCSI-3 is included allways, support | |
13 | * for NEC/TOSHIBA/HP commands is optional. | |
14 | * | |
15 | * Gerd Knorr <kraxel@cs.tu-berlin.de> | |
16 | * | |
17 | * -------------------------------------------------------------------------- | |
18 | * | |
19 | * support for XA/multisession-CD's | |
20 | * | |
21 | * - NEC: Detection and support of multisession CD's. | |
22 | * | |
23 | * - TOSHIBA: Detection and support of multisession CD's. | |
24 | * Some XA-Sector tweaking, required for older drives. | |
25 | * | |
26 | * - SONY: Detection and support of multisession CD's. | |
27 | * added by Thomas Quinot <thomas@cuivre.freenix.fr> | |
28 | * | |
29 | * - PIONEER, HITACHI, PLEXTOR, MATSHITA, TEAC, PHILIPS: known to | |
30 | * work with SONY (SCSI3 now) code. | |
31 | * | |
32 | * - HP: Much like SONY, but a little different... (Thomas) | |
33 | * HP-Writers only ??? Maybe other CD-Writers work with this too ? | |
34 | * HP 6020 writers now supported. | |
35 | */ | |
36 | ||
1da177e4 LT |
37 | #include <linux/cdrom.h> |
38 | #include <linux/errno.h> | |
39 | #include <linux/string.h> | |
40 | #include <linux/bcd.h> | |
41 | #include <linux/blkdev.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 LT |
43 | |
44 | #include <scsi/scsi.h> | |
45 | #include <scsi/scsi_cmnd.h> | |
46 | #include <scsi/scsi_device.h> | |
47 | #include <scsi/scsi_host.h> | |
48 | #include <scsi/scsi_ioctl.h> | |
49 | ||
50 | #include "sr.h" | |
51 | ||
52 | #if 0 | |
53 | #define DEBUG | |
54 | #endif | |
55 | ||
56 | /* here are some constants to sort the vendors into groups */ | |
57 | ||
58 | #define VENDOR_SCSI3 1 /* default: scsi-3 mmc */ | |
59 | ||
60 | #define VENDOR_NEC 2 | |
61 | #define VENDOR_TOSHIBA 3 | |
62 | #define VENDOR_WRITER 4 /* pre-scsi3 writers */ | |
63 | ||
64 | #define VENDOR_TIMEOUT 30*HZ | |
65 | ||
66 | void sr_vendor_init(Scsi_CD *cd) | |
67 | { | |
68 | #ifndef CONFIG_BLK_DEV_SR_VENDOR | |
69 | cd->vendor = VENDOR_SCSI3; | |
70 | #else | |
7b32b8e0 MW |
71 | const char *vendor = cd->device->vendor; |
72 | const char *model = cd->device->model; | |
1da177e4 LT |
73 | |
74 | /* default */ | |
75 | cd->vendor = VENDOR_SCSI3; | |
76 | if (cd->readcd_known) | |
77 | /* this is true for scsi3/mmc drives - no more checks */ | |
78 | return; | |
79 | ||
80 | if (cd->device->type == TYPE_WORM) { | |
81 | cd->vendor = VENDOR_WRITER; | |
82 | ||
83 | } else if (!strncmp(vendor, "NEC", 3)) { | |
84 | cd->vendor = VENDOR_NEC; | |
85 | if (!strncmp(model, "CD-ROM DRIVE:25", 15) || | |
86 | !strncmp(model, "CD-ROM DRIVE:36", 15) || | |
87 | !strncmp(model, "CD-ROM DRIVE:83", 15) || | |
88 | !strncmp(model, "CD-ROM DRIVE:84 ", 16) | |
89 | #if 0 | |
90 | /* my NEC 3x returns the read-raw data if a read-raw | |
91 | is followed by a read for the same sector - aeb */ | |
92 | || !strncmp(model, "CD-ROM DRIVE:500", 16) | |
93 | #endif | |
94 | ) | |
95 | /* these can't handle multisession, may hang */ | |
96 | cd->cdi.mask |= CDC_MULTI_SESSION; | |
97 | ||
98 | } else if (!strncmp(vendor, "TOSHIBA", 7)) { | |
99 | cd->vendor = VENDOR_TOSHIBA; | |
100 | ||
101 | } | |
102 | #endif | |
103 | } | |
104 | ||
105 | ||
106 | /* small handy function for switching block length using MODE SELECT, | |
107 | * used by sr_read_sector() */ | |
108 | ||
109 | int sr_set_blocklength(Scsi_CD *cd, int blocklength) | |
110 | { | |
111 | unsigned char *buffer; /* the buffer for the ioctl */ | |
112 | struct packet_command cgc; | |
113 | struct ccs_modesel_head *modesel; | |
114 | int rc, density = 0; | |
115 | ||
116 | #ifdef CONFIG_BLK_DEV_SR_VENDOR | |
117 | if (cd->vendor == VENDOR_TOSHIBA) | |
118 | density = (blocklength > 2048) ? 0x81 : 0x83; | |
119 | #endif | |
120 | ||
5cbded58 | 121 | buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); |
1da177e4 LT |
122 | if (!buffer) |
123 | return -ENOMEM; | |
124 | ||
125 | #ifdef DEBUG | |
96eefad2 | 126 | sr_printk(KERN_INFO, cd, "MODE SELECT 0x%x/%d\n", density, blocklength); |
1da177e4 LT |
127 | #endif |
128 | memset(&cgc, 0, sizeof(struct packet_command)); | |
129 | cgc.cmd[0] = MODE_SELECT; | |
130 | cgc.cmd[1] = (1 << 4); | |
131 | cgc.cmd[4] = 12; | |
132 | modesel = (struct ccs_modesel_head *) buffer; | |
133 | memset(modesel, 0, sizeof(*modesel)); | |
134 | modesel->block_desc_length = 0x08; | |
135 | modesel->density = density; | |
136 | modesel->block_length_med = (blocklength >> 8) & 0xff; | |
137 | modesel->block_length_lo = blocklength & 0xff; | |
138 | cgc.buffer = buffer; | |
139 | cgc.buflen = sizeof(*modesel); | |
140 | cgc.data_direction = DMA_TO_DEVICE; | |
141 | cgc.timeout = VENDOR_TIMEOUT; | |
142 | if (0 == (rc = sr_do_ioctl(cd, &cgc))) { | |
143 | cd->device->sector_size = blocklength; | |
144 | } | |
145 | #ifdef DEBUG | |
146 | else | |
96eefad2 HR |
147 | sr_printk(KERN_INFO, cd, |
148 | "switching blocklength to %d bytes failed\n", | |
149 | blocklength); | |
1da177e4 LT |
150 | #endif |
151 | kfree(buffer); | |
152 | return rc; | |
153 | } | |
154 | ||
155 | /* This function gets called after a media change. Checks if the CD is | |
156 | multisession, asks for offset etc. */ | |
157 | ||
158 | int sr_cd_check(struct cdrom_device_info *cdi) | |
159 | { | |
160 | Scsi_CD *cd = cdi->handle; | |
161 | unsigned long sector; | |
162 | unsigned char *buffer; /* the buffer for the ioctl */ | |
163 | struct packet_command cgc; | |
164 | int rc, no_multi; | |
165 | ||
166 | if (cd->cdi.mask & CDC_MULTI_SESSION) | |
167 | return 0; | |
168 | ||
5cbded58 | 169 | buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); |
1da177e4 LT |
170 | if (!buffer) |
171 | return -ENOMEM; | |
172 | ||
173 | sector = 0; /* the multisession sector offset goes here */ | |
174 | no_multi = 0; /* flag: the drive can't handle multisession */ | |
175 | rc = 0; | |
176 | ||
177 | memset(&cgc, 0, sizeof(struct packet_command)); | |
178 | ||
179 | switch (cd->vendor) { | |
180 | ||
181 | case VENDOR_SCSI3: | |
182 | cgc.cmd[0] = READ_TOC; | |
183 | cgc.cmd[8] = 12; | |
184 | cgc.cmd[9] = 0x40; | |
185 | cgc.buffer = buffer; | |
186 | cgc.buflen = 12; | |
187 | cgc.quiet = 1; | |
188 | cgc.data_direction = DMA_FROM_DEVICE; | |
189 | cgc.timeout = VENDOR_TIMEOUT; | |
190 | rc = sr_do_ioctl(cd, &cgc); | |
191 | if (rc != 0) | |
192 | break; | |
193 | if ((buffer[0] << 8) + buffer[1] < 0x0a) { | |
96eefad2 HR |
194 | sr_printk(KERN_INFO, cd, "Hmm, seems the drive " |
195 | "doesn't support multisession CD's\n"); | |
1da177e4 LT |
196 | no_multi = 1; |
197 | break; | |
198 | } | |
199 | sector = buffer[11] + (buffer[10] << 8) + | |
200 | (buffer[9] << 16) + (buffer[8] << 24); | |
201 | if (buffer[6] <= 1) { | |
202 | /* ignore sector offsets from first track */ | |
203 | sector = 0; | |
204 | } | |
205 | break; | |
206 | ||
207 | #ifdef CONFIG_BLK_DEV_SR_VENDOR | |
208 | case VENDOR_NEC:{ | |
209 | unsigned long min, sec, frame; | |
210 | cgc.cmd[0] = 0xde; | |
211 | cgc.cmd[1] = 0x03; | |
212 | cgc.cmd[2] = 0xb0; | |
213 | cgc.buffer = buffer; | |
214 | cgc.buflen = 0x16; | |
215 | cgc.quiet = 1; | |
216 | cgc.data_direction = DMA_FROM_DEVICE; | |
217 | cgc.timeout = VENDOR_TIMEOUT; | |
218 | rc = sr_do_ioctl(cd, &cgc); | |
219 | if (rc != 0) | |
220 | break; | |
221 | if (buffer[14] != 0 && buffer[14] != 0xb0) { | |
96eefad2 HR |
222 | sr_printk(KERN_INFO, cd, "Hmm, seems the cdrom " |
223 | "doesn't support multisession CD's\n"); | |
224 | ||
1da177e4 LT |
225 | no_multi = 1; |
226 | break; | |
227 | } | |
2cee5dfa AB |
228 | min = bcd2bin(buffer[15]); |
229 | sec = bcd2bin(buffer[16]); | |
230 | frame = bcd2bin(buffer[17]); | |
1da177e4 LT |
231 | sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame; |
232 | break; | |
233 | } | |
234 | ||
235 | case VENDOR_TOSHIBA:{ | |
236 | unsigned long min, sec, frame; | |
237 | ||
238 | /* we request some disc information (is it a XA-CD ?, | |
239 | * where starts the last session ?) */ | |
240 | cgc.cmd[0] = 0xc7; | |
241 | cgc.cmd[1] = 0x03; | |
242 | cgc.buffer = buffer; | |
243 | cgc.buflen = 4; | |
244 | cgc.quiet = 1; | |
245 | cgc.data_direction = DMA_FROM_DEVICE; | |
246 | cgc.timeout = VENDOR_TIMEOUT; | |
247 | rc = sr_do_ioctl(cd, &cgc); | |
248 | if (rc == -EINVAL) { | |
96eefad2 HR |
249 | sr_printk(KERN_INFO, cd, "Hmm, seems the drive " |
250 | "doesn't support multisession CD's\n"); | |
1da177e4 LT |
251 | no_multi = 1; |
252 | break; | |
253 | } | |
254 | if (rc != 0) | |
255 | break; | |
2cee5dfa AB |
256 | min = bcd2bin(buffer[1]); |
257 | sec = bcd2bin(buffer[2]); | |
258 | frame = bcd2bin(buffer[3]); | |
1da177e4 LT |
259 | sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame; |
260 | if (sector) | |
261 | sector -= CD_MSF_OFFSET; | |
262 | sr_set_blocklength(cd, 2048); | |
263 | break; | |
264 | } | |
265 | ||
266 | case VENDOR_WRITER: | |
267 | cgc.cmd[0] = READ_TOC; | |
268 | cgc.cmd[8] = 0x04; | |
269 | cgc.cmd[9] = 0x40; | |
270 | cgc.buffer = buffer; | |
271 | cgc.buflen = 0x04; | |
272 | cgc.quiet = 1; | |
273 | cgc.data_direction = DMA_FROM_DEVICE; | |
274 | cgc.timeout = VENDOR_TIMEOUT; | |
275 | rc = sr_do_ioctl(cd, &cgc); | |
276 | if (rc != 0) { | |
277 | break; | |
278 | } | |
279 | if ((rc = buffer[2]) == 0) { | |
96eefad2 HR |
280 | sr_printk(KERN_WARNING, cd, |
281 | "No finished session\n"); | |
1da177e4 LT |
282 | break; |
283 | } | |
284 | cgc.cmd[0] = READ_TOC; /* Read TOC */ | |
285 | cgc.cmd[6] = rc & 0x7f; /* number of last session */ | |
286 | cgc.cmd[8] = 0x0c; | |
287 | cgc.cmd[9] = 0x40; | |
288 | cgc.buffer = buffer; | |
289 | cgc.buflen = 12; | |
290 | cgc.quiet = 1; | |
291 | cgc.data_direction = DMA_FROM_DEVICE; | |
292 | cgc.timeout = VENDOR_TIMEOUT; | |
293 | rc = sr_do_ioctl(cd, &cgc); | |
294 | if (rc != 0) { | |
295 | break; | |
296 | } | |
297 | sector = buffer[11] + (buffer[10] << 8) + | |
298 | (buffer[9] << 16) + (buffer[8] << 24); | |
299 | break; | |
300 | #endif /* CONFIG_BLK_DEV_SR_VENDOR */ | |
301 | ||
302 | default: | |
303 | /* should not happen */ | |
96eefad2 HR |
304 | sr_printk(KERN_WARNING, cd, |
305 | "unknown vendor code (%i), not initialized ?\n", | |
306 | cd->vendor); | |
1da177e4 LT |
307 | sector = 0; |
308 | no_multi = 1; | |
309 | break; | |
310 | } | |
311 | cd->ms_offset = sector; | |
312 | cd->xa_flag = 0; | |
313 | if (CDS_AUDIO != sr_disk_status(cdi) && 1 == sr_is_xa(cd)) | |
314 | cd->xa_flag = 1; | |
315 | ||
316 | if (2048 != cd->device->sector_size) { | |
317 | sr_set_blocklength(cd, 2048); | |
318 | } | |
319 | if (no_multi) | |
320 | cdi->mask |= CDC_MULTI_SESSION; | |
321 | ||
322 | #ifdef DEBUG | |
323 | if (sector) | |
96eefad2 HR |
324 | sr_printk(KERN_DEBUG, cd, "multisession offset=%lu\n", |
325 | sector); | |
1da177e4 LT |
326 | #endif |
327 | kfree(buffer); | |
328 | return rc; | |
329 | } |