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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> | |
42 | ||
43 | #include <scsi/scsi.h> | |
44 | #include <scsi/scsi_cmnd.h> | |
45 | #include <scsi/scsi_device.h> | |
46 | #include <scsi/scsi_host.h> | |
47 | #include <scsi/scsi_ioctl.h> | |
48 | ||
49 | #include "sr.h" | |
50 | ||
51 | #if 0 | |
52 | #define DEBUG | |
53 | #endif | |
54 | ||
55 | /* here are some constants to sort the vendors into groups */ | |
56 | ||
57 | #define VENDOR_SCSI3 1 /* default: scsi-3 mmc */ | |
58 | ||
59 | #define VENDOR_NEC 2 | |
60 | #define VENDOR_TOSHIBA 3 | |
61 | #define VENDOR_WRITER 4 /* pre-scsi3 writers */ | |
62 | ||
63 | #define VENDOR_TIMEOUT 30*HZ | |
64 | ||
65 | void sr_vendor_init(Scsi_CD *cd) | |
66 | { | |
67 | #ifndef CONFIG_BLK_DEV_SR_VENDOR | |
68 | cd->vendor = VENDOR_SCSI3; | |
69 | #else | |
7b32b8e0 MW |
70 | const char *vendor = cd->device->vendor; |
71 | const char *model = cd->device->model; | |
1da177e4 LT |
72 | |
73 | /* default */ | |
74 | cd->vendor = VENDOR_SCSI3; | |
75 | if (cd->readcd_known) | |
76 | /* this is true for scsi3/mmc drives - no more checks */ | |
77 | return; | |
78 | ||
79 | if (cd->device->type == TYPE_WORM) { | |
80 | cd->vendor = VENDOR_WRITER; | |
81 | ||
82 | } else if (!strncmp(vendor, "NEC", 3)) { | |
83 | cd->vendor = VENDOR_NEC; | |
84 | if (!strncmp(model, "CD-ROM DRIVE:25", 15) || | |
85 | !strncmp(model, "CD-ROM DRIVE:36", 15) || | |
86 | !strncmp(model, "CD-ROM DRIVE:83", 15) || | |
87 | !strncmp(model, "CD-ROM DRIVE:84 ", 16) | |
88 | #if 0 | |
89 | /* my NEC 3x returns the read-raw data if a read-raw | |
90 | is followed by a read for the same sector - aeb */ | |
91 | || !strncmp(model, "CD-ROM DRIVE:500", 16) | |
92 | #endif | |
93 | ) | |
94 | /* these can't handle multisession, may hang */ | |
95 | cd->cdi.mask |= CDC_MULTI_SESSION; | |
96 | ||
97 | } else if (!strncmp(vendor, "TOSHIBA", 7)) { | |
98 | cd->vendor = VENDOR_TOSHIBA; | |
99 | ||
100 | } | |
101 | #endif | |
102 | } | |
103 | ||
104 | ||
105 | /* small handy function for switching block length using MODE SELECT, | |
106 | * used by sr_read_sector() */ | |
107 | ||
108 | int sr_set_blocklength(Scsi_CD *cd, int blocklength) | |
109 | { | |
110 | unsigned char *buffer; /* the buffer for the ioctl */ | |
111 | struct packet_command cgc; | |
112 | struct ccs_modesel_head *modesel; | |
113 | int rc, density = 0; | |
114 | ||
115 | #ifdef CONFIG_BLK_DEV_SR_VENDOR | |
116 | if (cd->vendor == VENDOR_TOSHIBA) | |
117 | density = (blocklength > 2048) ? 0x81 : 0x83; | |
118 | #endif | |
119 | ||
5cbded58 | 120 | buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); |
1da177e4 LT |
121 | if (!buffer) |
122 | return -ENOMEM; | |
123 | ||
124 | #ifdef DEBUG | |
125 | printk("%s: MODE SELECT 0x%x/%d\n", cd->cdi.name, density, blocklength); | |
126 | #endif | |
127 | memset(&cgc, 0, sizeof(struct packet_command)); | |
128 | cgc.cmd[0] = MODE_SELECT; | |
129 | cgc.cmd[1] = (1 << 4); | |
130 | cgc.cmd[4] = 12; | |
131 | modesel = (struct ccs_modesel_head *) buffer; | |
132 | memset(modesel, 0, sizeof(*modesel)); | |
133 | modesel->block_desc_length = 0x08; | |
134 | modesel->density = density; | |
135 | modesel->block_length_med = (blocklength >> 8) & 0xff; | |
136 | modesel->block_length_lo = blocklength & 0xff; | |
137 | cgc.buffer = buffer; | |
138 | cgc.buflen = sizeof(*modesel); | |
139 | cgc.data_direction = DMA_TO_DEVICE; | |
140 | cgc.timeout = VENDOR_TIMEOUT; | |
141 | if (0 == (rc = sr_do_ioctl(cd, &cgc))) { | |
142 | cd->device->sector_size = blocklength; | |
143 | } | |
144 | #ifdef DEBUG | |
145 | else | |
146 | printk("%s: switching blocklength to %d bytes failed\n", | |
147 | cd->cdi.name, blocklength); | |
148 | #endif | |
149 | kfree(buffer); | |
150 | return rc; | |
151 | } | |
152 | ||
153 | /* This function gets called after a media change. Checks if the CD is | |
154 | multisession, asks for offset etc. */ | |
155 | ||
156 | int sr_cd_check(struct cdrom_device_info *cdi) | |
157 | { | |
158 | Scsi_CD *cd = cdi->handle; | |
159 | unsigned long sector; | |
160 | unsigned char *buffer; /* the buffer for the ioctl */ | |
161 | struct packet_command cgc; | |
162 | int rc, no_multi; | |
163 | ||
164 | if (cd->cdi.mask & CDC_MULTI_SESSION) | |
165 | return 0; | |
166 | ||
5cbded58 | 167 | buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); |
1da177e4 LT |
168 | if (!buffer) |
169 | return -ENOMEM; | |
170 | ||
171 | sector = 0; /* the multisession sector offset goes here */ | |
172 | no_multi = 0; /* flag: the drive can't handle multisession */ | |
173 | rc = 0; | |
174 | ||
175 | memset(&cgc, 0, sizeof(struct packet_command)); | |
176 | ||
177 | switch (cd->vendor) { | |
178 | ||
179 | case VENDOR_SCSI3: | |
180 | cgc.cmd[0] = READ_TOC; | |
181 | cgc.cmd[8] = 12; | |
182 | cgc.cmd[9] = 0x40; | |
183 | cgc.buffer = buffer; | |
184 | cgc.buflen = 12; | |
185 | cgc.quiet = 1; | |
186 | cgc.data_direction = DMA_FROM_DEVICE; | |
187 | cgc.timeout = VENDOR_TIMEOUT; | |
188 | rc = sr_do_ioctl(cd, &cgc); | |
189 | if (rc != 0) | |
190 | break; | |
191 | if ((buffer[0] << 8) + buffer[1] < 0x0a) { | |
192 | printk(KERN_INFO "%s: Hmm, seems the drive " | |
193 | "doesn't support multisession CD's\n", cd->cdi.name); | |
194 | no_multi = 1; | |
195 | break; | |
196 | } | |
197 | sector = buffer[11] + (buffer[10] << 8) + | |
198 | (buffer[9] << 16) + (buffer[8] << 24); | |
199 | if (buffer[6] <= 1) { | |
200 | /* ignore sector offsets from first track */ | |
201 | sector = 0; | |
202 | } | |
203 | break; | |
204 | ||
205 | #ifdef CONFIG_BLK_DEV_SR_VENDOR | |
206 | case VENDOR_NEC:{ | |
207 | unsigned long min, sec, frame; | |
208 | cgc.cmd[0] = 0xde; | |
209 | cgc.cmd[1] = 0x03; | |
210 | cgc.cmd[2] = 0xb0; | |
211 | cgc.buffer = buffer; | |
212 | cgc.buflen = 0x16; | |
213 | cgc.quiet = 1; | |
214 | cgc.data_direction = DMA_FROM_DEVICE; | |
215 | cgc.timeout = VENDOR_TIMEOUT; | |
216 | rc = sr_do_ioctl(cd, &cgc); | |
217 | if (rc != 0) | |
218 | break; | |
219 | if (buffer[14] != 0 && buffer[14] != 0xb0) { | |
220 | printk(KERN_INFO "%s: Hmm, seems the cdrom " | |
221 | "doesn't support multisession CD's\n", | |
222 | cd->cdi.name); | |
223 | no_multi = 1; | |
224 | break; | |
225 | } | |
226 | min = BCD2BIN(buffer[15]); | |
227 | sec = BCD2BIN(buffer[16]); | |
228 | frame = BCD2BIN(buffer[17]); | |
229 | sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame; | |
230 | break; | |
231 | } | |
232 | ||
233 | case VENDOR_TOSHIBA:{ | |
234 | unsigned long min, sec, frame; | |
235 | ||
236 | /* we request some disc information (is it a XA-CD ?, | |
237 | * where starts the last session ?) */ | |
238 | cgc.cmd[0] = 0xc7; | |
239 | cgc.cmd[1] = 0x03; | |
240 | cgc.buffer = buffer; | |
241 | cgc.buflen = 4; | |
242 | cgc.quiet = 1; | |
243 | cgc.data_direction = DMA_FROM_DEVICE; | |
244 | cgc.timeout = VENDOR_TIMEOUT; | |
245 | rc = sr_do_ioctl(cd, &cgc); | |
246 | if (rc == -EINVAL) { | |
247 | printk(KERN_INFO "%s: Hmm, seems the drive " | |
248 | "doesn't support multisession CD's\n", | |
249 | cd->cdi.name); | |
250 | no_multi = 1; | |
251 | break; | |
252 | } | |
253 | if (rc != 0) | |
254 | break; | |
255 | min = BCD2BIN(buffer[1]); | |
256 | sec = BCD2BIN(buffer[2]); | |
257 | frame = BCD2BIN(buffer[3]); | |
258 | sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame; | |
259 | if (sector) | |
260 | sector -= CD_MSF_OFFSET; | |
261 | sr_set_blocklength(cd, 2048); | |
262 | break; | |
263 | } | |
264 | ||
265 | case VENDOR_WRITER: | |
266 | cgc.cmd[0] = READ_TOC; | |
267 | cgc.cmd[8] = 0x04; | |
268 | cgc.cmd[9] = 0x40; | |
269 | cgc.buffer = buffer; | |
270 | cgc.buflen = 0x04; | |
271 | cgc.quiet = 1; | |
272 | cgc.data_direction = DMA_FROM_DEVICE; | |
273 | cgc.timeout = VENDOR_TIMEOUT; | |
274 | rc = sr_do_ioctl(cd, &cgc); | |
275 | if (rc != 0) { | |
276 | break; | |
277 | } | |
278 | if ((rc = buffer[2]) == 0) { | |
279 | printk(KERN_WARNING | |
280 | "%s: No finished session\n", cd->cdi.name); | |
281 | break; | |
282 | } | |
283 | cgc.cmd[0] = READ_TOC; /* Read TOC */ | |
284 | cgc.cmd[6] = rc & 0x7f; /* number of last session */ | |
285 | cgc.cmd[8] = 0x0c; | |
286 | cgc.cmd[9] = 0x40; | |
287 | cgc.buffer = buffer; | |
288 | cgc.buflen = 12; | |
289 | cgc.quiet = 1; | |
290 | cgc.data_direction = DMA_FROM_DEVICE; | |
291 | cgc.timeout = VENDOR_TIMEOUT; | |
292 | rc = sr_do_ioctl(cd, &cgc); | |
293 | if (rc != 0) { | |
294 | break; | |
295 | } | |
296 | sector = buffer[11] + (buffer[10] << 8) + | |
297 | (buffer[9] << 16) + (buffer[8] << 24); | |
298 | break; | |
299 | #endif /* CONFIG_BLK_DEV_SR_VENDOR */ | |
300 | ||
301 | default: | |
302 | /* should not happen */ | |
303 | printk(KERN_WARNING | |
304 | "%s: unknown vendor code (%i), not initialized ?\n", | |
305 | cd->cdi.name, cd->vendor); | |
306 | sector = 0; | |
307 | no_multi = 1; | |
308 | break; | |
309 | } | |
310 | cd->ms_offset = sector; | |
311 | cd->xa_flag = 0; | |
312 | if (CDS_AUDIO != sr_disk_status(cdi) && 1 == sr_is_xa(cd)) | |
313 | cd->xa_flag = 1; | |
314 | ||
315 | if (2048 != cd->device->sector_size) { | |
316 | sr_set_blocklength(cd, 2048); | |
317 | } | |
318 | if (no_multi) | |
319 | cdi->mask |= CDC_MULTI_SESSION; | |
320 | ||
321 | #ifdef DEBUG | |
322 | if (sector) | |
323 | printk(KERN_DEBUG "%s: multisession offset=%lu\n", | |
324 | cd->cdi.name, sector); | |
325 | #endif | |
326 | kfree(buffer); | |
327 | return rc; | |
328 | } |