Commit | Line | Data |
---|---|---|
daa6eda6 GK |
1 | /* |
2 | * SCSI Media Changer device driver for Linux 2.6 | |
3 | * | |
4 | * (c) 1996-2003 Gerd Knorr <kraxel@bytesex.org> | |
5 | * | |
6 | */ | |
7 | ||
8 | #define VERSION "0.25" | |
9 | ||
daa6eda6 GK |
10 | #include <linux/module.h> |
11 | #include <linux/init.h> | |
12 | #include <linux/fs.h> | |
13 | #include <linux/kernel.h> | |
daa6eda6 GK |
14 | #include <linux/mm.h> |
15 | #include <linux/major.h> | |
16 | #include <linux/string.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/blkdev.h> | |
20 | #include <linux/completion.h> | |
daa6eda6 GK |
21 | #include <linux/compat.h> |
22 | #include <linux/chio.h> /* here are all the ioctls */ | |
0b950672 | 23 | #include <linux/mutex.h> |
da707c54 | 24 | #include <linux/idr.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
daa6eda6 GK |
26 | |
27 | #include <scsi/scsi.h> | |
28 | #include <scsi/scsi_cmnd.h> | |
29 | #include <scsi/scsi_driver.h> | |
30 | #include <scsi/scsi_ioctl.h> | |
31 | #include <scsi/scsi_host.h> | |
32 | #include <scsi/scsi_device.h> | |
84743bbc | 33 | #include <scsi/scsi_eh.h> |
daa6eda6 GK |
34 | #include <scsi/scsi_dbg.h> |
35 | ||
36 | #define CH_DT_MAX 16 | |
37 | #define CH_TYPES 8 | |
da707c54 | 38 | #define CH_MAX_DEVS 128 |
daa6eda6 GK |
39 | |
40 | MODULE_DESCRIPTION("device driver for scsi media changer devices"); | |
41 | MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org>"); | |
42 | MODULE_LICENSE("GPL"); | |
f018fa55 | 43 | MODULE_ALIAS_CHARDEV_MAJOR(SCSI_CHANGER_MAJOR); |
95f6c83f | 44 | MODULE_ALIAS_SCSI_DEVICE(TYPE_MEDIUM_CHANGER); |
daa6eda6 | 45 | |
c45d15d2 | 46 | static DEFINE_MUTEX(ch_mutex); |
daa6eda6 GK |
47 | static int init = 1; |
48 | module_param(init, int, 0444); | |
49 | MODULE_PARM_DESC(init, \ | |
50 | "initialize element status on driver load (default: on)"); | |
51 | ||
52 | static int timeout_move = 300; | |
53 | module_param(timeout_move, int, 0644); | |
54 | MODULE_PARM_DESC(timeout_move,"timeout for move commands " | |
55 | "(default: 300 seconds)"); | |
56 | ||
57 | static int timeout_init = 3600; | |
58 | module_param(timeout_init, int, 0644); | |
59 | MODULE_PARM_DESC(timeout_init,"timeout for INITIALIZE ELEMENT STATUS " | |
60 | "(default: 3600 seconds)"); | |
61 | ||
62 | static int verbose = 1; | |
63 | module_param(verbose, int, 0644); | |
64 | MODULE_PARM_DESC(verbose,"be verbose (default: on)"); | |
65 | ||
66 | static int debug = 0; | |
67 | module_param(debug, int, 0644); | |
68 | MODULE_PARM_DESC(debug,"enable/disable debug messages, also prints more " | |
69 | "detailed sense codes on scsi errors (default: off)"); | |
70 | ||
71 | static int dt_id[CH_DT_MAX] = { [ 0 ... (CH_DT_MAX-1) ] = -1 }; | |
72 | static int dt_lun[CH_DT_MAX]; | |
73 | module_param_array(dt_id, int, NULL, 0444); | |
74 | module_param_array(dt_lun, int, NULL, 0444); | |
75 | ||
76 | /* tell the driver about vendor-specific slots */ | |
77 | static int vendor_firsts[CH_TYPES-4]; | |
78 | static int vendor_counts[CH_TYPES-4]; | |
79 | module_param_array(vendor_firsts, int, NULL, 0444); | |
80 | module_param_array(vendor_counts, int, NULL, 0444); | |
81 | ||
0ad78200 | 82 | static const char * vendor_labels[CH_TYPES-4] = { |
daa6eda6 GK |
83 | "v0", "v1", "v2", "v3" |
84 | }; | |
85 | // module_param_string_array(vendor_labels, NULL, 0444); | |
86 | ||
28c31729 | 87 | #define ch_printk(prefix, ch, fmt, a...) \ |
22e0d994 | 88 | sdev_prefix_printk(prefix, (ch)->device, (ch)->name, fmt, ##a) |
28c31729 | 89 | |
87da3235 JP |
90 | #define DPRINTK(fmt, arg...) \ |
91 | do { \ | |
92 | if (debug) \ | |
28c31729 | 93 | ch_printk(KERN_DEBUG, ch, fmt, ##arg); \ |
87da3235 JP |
94 | } while (0) |
95 | #define VPRINTK(level, fmt, arg...) \ | |
96 | do { \ | |
97 | if (verbose) \ | |
28c31729 | 98 | ch_printk(level, ch, fmt, ##arg); \ |
87da3235 | 99 | } while (0) |
daa6eda6 GK |
100 | |
101 | /* ------------------------------------------------------------------- */ | |
102 | ||
103 | #define MAX_RETRIES 1 | |
104 | ||
21feb5cc | 105 | static struct class * ch_sysfs_class; |
daa6eda6 GK |
106 | |
107 | typedef struct { | |
108 | struct list_head list; | |
109 | int minor; | |
110 | char name[8]; | |
111 | struct scsi_device *device; | |
112 | struct scsi_device **dt; /* ptrs to data transfer elements */ | |
113 | u_int firsts[CH_TYPES]; | |
114 | u_int counts[CH_TYPES]; | |
115 | u_int unit_attention; | |
116 | u_int voltags; | |
0b950672 | 117 | struct mutex lock; |
daa6eda6 GK |
118 | } scsi_changer; |
119 | ||
da707c54 FT |
120 | static DEFINE_IDR(ch_index_idr); |
121 | static DEFINE_SPINLOCK(ch_index_lock); | |
daa6eda6 | 122 | |
0ad78200 | 123 | static const struct { |
daa6eda6 GK |
124 | unsigned char sense; |
125 | unsigned char asc; | |
126 | unsigned char ascq; | |
127 | int errno; | |
d70d4667 | 128 | } ch_err[] = { |
daa6eda6 GK |
129 | /* Just filled in what looks right. Hav'nt checked any standard paper for |
130 | these errno assignments, so they may be wrong... */ | |
131 | { | |
132 | .sense = ILLEGAL_REQUEST, | |
133 | .asc = 0x21, | |
134 | .ascq = 0x01, | |
135 | .errno = EBADSLT, /* Invalid element address */ | |
136 | },{ | |
137 | .sense = ILLEGAL_REQUEST, | |
138 | .asc = 0x28, | |
139 | .ascq = 0x01, | |
140 | .errno = EBADE, /* Import or export element accessed */ | |
141 | },{ | |
142 | .sense = ILLEGAL_REQUEST, | |
143 | .asc = 0x3B, | |
144 | .ascq = 0x0D, | |
145 | .errno = EXFULL, /* Medium destination element full */ | |
146 | },{ | |
147 | .sense = ILLEGAL_REQUEST, | |
148 | .asc = 0x3B, | |
149 | .ascq = 0x0E, | |
150 | .errno = EBADE, /* Medium source element empty */ | |
151 | },{ | |
152 | .sense = ILLEGAL_REQUEST, | |
153 | .asc = 0x20, | |
154 | .ascq = 0x00, | |
155 | .errno = EBADRQC, /* Invalid command operation code */ | |
156 | },{ | |
157 | /* end of list */ | |
158 | } | |
159 | }; | |
160 | ||
161 | /* ------------------------------------------------------------------- */ | |
162 | ||
84743bbc | 163 | static int ch_find_errno(struct scsi_sense_hdr *sshdr) |
daa6eda6 GK |
164 | { |
165 | int i,errno = 0; | |
166 | ||
167 | /* Check to see if additional sense information is available */ | |
84743bbc JB |
168 | if (scsi_sense_valid(sshdr) && |
169 | sshdr->asc != 0) { | |
d70d4667 HH |
170 | for (i = 0; ch_err[i].errno != 0; i++) { |
171 | if (ch_err[i].sense == sshdr->sense_key && | |
172 | ch_err[i].asc == sshdr->asc && | |
173 | ch_err[i].ascq == sshdr->ascq) { | |
174 | errno = -ch_err[i].errno; | |
daa6eda6 GK |
175 | break; |
176 | } | |
177 | } | |
178 | } | |
179 | if (errno == 0) | |
180 | errno = -EIO; | |
181 | return errno; | |
182 | } | |
183 | ||
184 | static int | |
a9a47bf5 | 185 | ch_do_scsi(scsi_changer *ch, unsigned char *cmd, int cmd_len, |
daa6eda6 GK |
186 | void *buffer, unsigned buflength, |
187 | enum dma_data_direction direction) | |
188 | { | |
84743bbc JB |
189 | int errno, retries = 0, timeout, result; |
190 | struct scsi_sense_hdr sshdr; | |
5aa22af3 | 191 | |
daa6eda6 GK |
192 | timeout = (cmd[0] == INITIALIZE_ELEMENT_STATUS) |
193 | ? timeout_init : timeout_move; | |
194 | ||
195 | retry: | |
196 | errno = 0; | |
28c31729 | 197 | result = scsi_execute_req(ch->device, cmd, direction, buffer, |
84743bbc | 198 | buflength, &sshdr, timeout * HZ, |
f4f4e47e | 199 | MAX_RETRIES, NULL); |
daa6eda6 | 200 | |
84743bbc | 201 | if (driver_byte(result) & DRIVER_SENSE) { |
daa6eda6 | 202 | if (debug) |
d811b848 | 203 | scsi_print_sense_hdr(ch->device, ch->name, &sshdr); |
84743bbc | 204 | errno = ch_find_errno(&sshdr); |
daa6eda6 | 205 | |
84743bbc | 206 | switch(sshdr.sense_key) { |
daa6eda6 GK |
207 | case UNIT_ATTENTION: |
208 | ch->unit_attention = 1; | |
209 | if (retries++ < 3) | |
210 | goto retry; | |
211 | break; | |
212 | } | |
213 | } | |
daa6eda6 GK |
214 | return errno; |
215 | } | |
216 | ||
217 | /* ------------------------------------------------------------------------ */ | |
218 | ||
219 | static int | |
220 | ch_elem_to_typecode(scsi_changer *ch, u_int elem) | |
221 | { | |
222 | int i; | |
5aa22af3 | 223 | |
daa6eda6 GK |
224 | for (i = 0; i < CH_TYPES; i++) { |
225 | if (elem >= ch->firsts[i] && | |
226 | elem < ch->firsts[i] + | |
227 | ch->counts[i]) | |
228 | return i+1; | |
229 | } | |
230 | return 0; | |
231 | } | |
232 | ||
233 | static int | |
234 | ch_read_element_status(scsi_changer *ch, u_int elem, char *data) | |
235 | { | |
236 | u_char cmd[12]; | |
237 | u_char *buffer; | |
238 | int result; | |
5aa22af3 | 239 | |
daa6eda6 GK |
240 | buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); |
241 | if(!buffer) | |
242 | return -ENOMEM; | |
5aa22af3 | 243 | |
daa6eda6 GK |
244 | retry: |
245 | memset(cmd,0,sizeof(cmd)); | |
246 | cmd[0] = READ_ELEMENT_STATUS; | |
9cb78c16 | 247 | cmd[1] = ((ch->device->lun & 0x7) << 5) | |
daa6eda6 GK |
248 | (ch->voltags ? 0x10 : 0) | |
249 | ch_elem_to_typecode(ch,elem); | |
250 | cmd[2] = (elem >> 8) & 0xff; | |
251 | cmd[3] = elem & 0xff; | |
252 | cmd[5] = 1; | |
253 | cmd[9] = 255; | |
a9a47bf5 HR |
254 | if (0 == (result = ch_do_scsi(ch, cmd, 12, |
255 | buffer, 256, DMA_FROM_DEVICE))) { | |
daa6eda6 | 256 | if (((buffer[16] << 8) | buffer[17]) != elem) { |
87da3235 | 257 | DPRINTK("asked for element 0x%02x, got 0x%02x\n", |
daa6eda6 GK |
258 | elem,(buffer[16] << 8) | buffer[17]); |
259 | kfree(buffer); | |
260 | return -EIO; | |
261 | } | |
262 | memcpy(data,buffer+16,16); | |
263 | } else { | |
264 | if (ch->voltags) { | |
265 | ch->voltags = 0; | |
87da3235 | 266 | VPRINTK(KERN_INFO, "device has no volume tag support\n"); |
daa6eda6 GK |
267 | goto retry; |
268 | } | |
87da3235 | 269 | DPRINTK("READ ELEMENT STATUS for element 0x%x failed\n",elem); |
daa6eda6 GK |
270 | } |
271 | kfree(buffer); | |
272 | return result; | |
273 | } | |
274 | ||
5aa22af3 | 275 | static int |
daa6eda6 GK |
276 | ch_init_elem(scsi_changer *ch) |
277 | { | |
278 | int err; | |
279 | u_char cmd[6]; | |
280 | ||
87da3235 | 281 | VPRINTK(KERN_INFO, "INITIALIZE ELEMENT STATUS, may take some time ...\n"); |
daa6eda6 GK |
282 | memset(cmd,0,sizeof(cmd)); |
283 | cmd[0] = INITIALIZE_ELEMENT_STATUS; | |
9cb78c16 | 284 | cmd[1] = (ch->device->lun & 0x7) << 5; |
a9a47bf5 | 285 | err = ch_do_scsi(ch, cmd, 6, NULL, 0, DMA_NONE); |
87da3235 | 286 | VPRINTK(KERN_INFO, "... finished\n"); |
daa6eda6 GK |
287 | return err; |
288 | } | |
289 | ||
290 | static int | |
291 | ch_readconfig(scsi_changer *ch) | |
292 | { | |
293 | u_char cmd[10], data[16]; | |
294 | u_char *buffer; | |
295 | int result,id,lun,i; | |
296 | u_int elem; | |
297 | ||
4530a169 | 298 | buffer = kzalloc(512, GFP_KERNEL | GFP_DMA); |
daa6eda6 GK |
299 | if (!buffer) |
300 | return -ENOMEM; | |
5aa22af3 | 301 | |
daa6eda6 GK |
302 | memset(cmd,0,sizeof(cmd)); |
303 | cmd[0] = MODE_SENSE; | |
9cb78c16 | 304 | cmd[1] = (ch->device->lun & 0x7) << 5; |
daa6eda6 GK |
305 | cmd[2] = 0x1d; |
306 | cmd[4] = 255; | |
a9a47bf5 | 307 | result = ch_do_scsi(ch, cmd, 10, buffer, 255, DMA_FROM_DEVICE); |
daa6eda6 GK |
308 | if (0 != result) { |
309 | cmd[1] |= (1<<3); | |
a9a47bf5 | 310 | result = ch_do_scsi(ch, cmd, 10, buffer, 255, DMA_FROM_DEVICE); |
daa6eda6 GK |
311 | } |
312 | if (0 == result) { | |
313 | ch->firsts[CHET_MT] = | |
314 | (buffer[buffer[3]+ 6] << 8) | buffer[buffer[3]+ 7]; | |
315 | ch->counts[CHET_MT] = | |
316 | (buffer[buffer[3]+ 8] << 8) | buffer[buffer[3]+ 9]; | |
317 | ch->firsts[CHET_ST] = | |
318 | (buffer[buffer[3]+10] << 8) | buffer[buffer[3]+11]; | |
319 | ch->counts[CHET_ST] = | |
320 | (buffer[buffer[3]+12] << 8) | buffer[buffer[3]+13]; | |
321 | ch->firsts[CHET_IE] = | |
322 | (buffer[buffer[3]+14] << 8) | buffer[buffer[3]+15]; | |
323 | ch->counts[CHET_IE] = | |
324 | (buffer[buffer[3]+16] << 8) | buffer[buffer[3]+17]; | |
325 | ch->firsts[CHET_DT] = | |
326 | (buffer[buffer[3]+18] << 8) | buffer[buffer[3]+19]; | |
327 | ch->counts[CHET_DT] = | |
328 | (buffer[buffer[3]+20] << 8) | buffer[buffer[3]+21]; | |
87da3235 | 329 | VPRINTK(KERN_INFO, "type #1 (mt): 0x%x+%d [medium transport]\n", |
daa6eda6 GK |
330 | ch->firsts[CHET_MT], |
331 | ch->counts[CHET_MT]); | |
87da3235 | 332 | VPRINTK(KERN_INFO, "type #2 (st): 0x%x+%d [storage]\n", |
daa6eda6 GK |
333 | ch->firsts[CHET_ST], |
334 | ch->counts[CHET_ST]); | |
87da3235 | 335 | VPRINTK(KERN_INFO, "type #3 (ie): 0x%x+%d [import/export]\n", |
daa6eda6 GK |
336 | ch->firsts[CHET_IE], |
337 | ch->counts[CHET_IE]); | |
87da3235 | 338 | VPRINTK(KERN_INFO, "type #4 (dt): 0x%x+%d [data transfer]\n", |
daa6eda6 GK |
339 | ch->firsts[CHET_DT], |
340 | ch->counts[CHET_DT]); | |
341 | } else { | |
f42cf8d6 | 342 | VPRINTK(KERN_INFO, "reading element address assignment page failed!\n"); |
daa6eda6 | 343 | } |
5aa22af3 | 344 | |
daa6eda6 GK |
345 | /* vendor specific element types */ |
346 | for (i = 0; i < 4; i++) { | |
347 | if (0 == vendor_counts[i]) | |
348 | continue; | |
349 | if (NULL == vendor_labels[i]) | |
350 | continue; | |
351 | ch->firsts[CHET_V1+i] = vendor_firsts[i]; | |
352 | ch->counts[CHET_V1+i] = vendor_counts[i]; | |
87da3235 | 353 | VPRINTK(KERN_INFO, "type #%d (v%d): 0x%x+%d [%s, vendor specific]\n", |
daa6eda6 GK |
354 | i+5,i+1,vendor_firsts[i],vendor_counts[i], |
355 | vendor_labels[i]); | |
356 | } | |
357 | ||
358 | /* look up the devices of the data transfer elements */ | |
85bc081f | 359 | ch->dt = kcalloc(ch->counts[CHET_DT], sizeof(*ch->dt), |
daa6eda6 | 360 | GFP_KERNEL); |
a2cf8a63 DB |
361 | |
362 | if (!ch->dt) { | |
363 | kfree(buffer); | |
364 | return -ENOMEM; | |
365 | } | |
366 | ||
daa6eda6 GK |
367 | for (elem = 0; elem < ch->counts[CHET_DT]; elem++) { |
368 | id = -1; | |
369 | lun = 0; | |
370 | if (elem < CH_DT_MAX && -1 != dt_id[elem]) { | |
371 | id = dt_id[elem]; | |
372 | lun = dt_lun[elem]; | |
87da3235 | 373 | VPRINTK(KERN_INFO, "dt 0x%x: [insmod option] ", |
daa6eda6 GK |
374 | elem+ch->firsts[CHET_DT]); |
375 | } else if (0 != ch_read_element_status | |
376 | (ch,elem+ch->firsts[CHET_DT],data)) { | |
87da3235 | 377 | VPRINTK(KERN_INFO, "dt 0x%x: READ ELEMENT STATUS failed\n", |
daa6eda6 GK |
378 | elem+ch->firsts[CHET_DT]); |
379 | } else { | |
87da3235 | 380 | VPRINTK(KERN_INFO, "dt 0x%x: ",elem+ch->firsts[CHET_DT]); |
daa6eda6 | 381 | if (data[6] & 0x80) { |
87da3235 | 382 | VPRINTK(KERN_CONT, "not this SCSI bus\n"); |
daa6eda6 GK |
383 | ch->dt[elem] = NULL; |
384 | } else if (0 == (data[6] & 0x30)) { | |
87da3235 | 385 | VPRINTK(KERN_CONT, "ID/LUN unknown\n"); |
daa6eda6 GK |
386 | ch->dt[elem] = NULL; |
387 | } else { | |
388 | id = ch->device->id; | |
389 | lun = 0; | |
390 | if (data[6] & 0x20) id = data[7]; | |
391 | if (data[6] & 0x10) lun = data[6] & 7; | |
392 | } | |
393 | } | |
394 | if (-1 != id) { | |
87da3235 | 395 | VPRINTK(KERN_CONT, "ID %i, LUN %i, ",id,lun); |
daa6eda6 GK |
396 | ch->dt[elem] = |
397 | scsi_device_lookup(ch->device->host, | |
398 | ch->device->channel, | |
399 | id,lun); | |
400 | if (!ch->dt[elem]) { | |
401 | /* should not happen */ | |
87da3235 | 402 | VPRINTK(KERN_CONT, "Huh? device not found!\n"); |
daa6eda6 | 403 | } else { |
87da3235 JP |
404 | VPRINTK(KERN_CONT, "name: %8.8s %16.16s %4.4s\n", |
405 | ch->dt[elem]->vendor, | |
406 | ch->dt[elem]->model, | |
407 | ch->dt[elem]->rev); | |
daa6eda6 GK |
408 | } |
409 | } | |
410 | } | |
411 | ch->voltags = 1; | |
412 | kfree(buffer); | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | /* ------------------------------------------------------------------------ */ | |
418 | ||
419 | static int | |
420 | ch_position(scsi_changer *ch, u_int trans, u_int elem, int rotate) | |
421 | { | |
422 | u_char cmd[10]; | |
5aa22af3 | 423 | |
87da3235 | 424 | DPRINTK("position: 0x%x\n",elem); |
daa6eda6 GK |
425 | if (0 == trans) |
426 | trans = ch->firsts[CHET_MT]; | |
427 | memset(cmd,0,sizeof(cmd)); | |
428 | cmd[0] = POSITION_TO_ELEMENT; | |
9cb78c16 | 429 | cmd[1] = (ch->device->lun & 0x7) << 5; |
daa6eda6 GK |
430 | cmd[2] = (trans >> 8) & 0xff; |
431 | cmd[3] = trans & 0xff; | |
432 | cmd[4] = (elem >> 8) & 0xff; | |
433 | cmd[5] = elem & 0xff; | |
434 | cmd[8] = rotate ? 1 : 0; | |
a9a47bf5 | 435 | return ch_do_scsi(ch, cmd, 10, NULL, 0, DMA_NONE); |
daa6eda6 GK |
436 | } |
437 | ||
438 | static int | |
439 | ch_move(scsi_changer *ch, u_int trans, u_int src, u_int dest, int rotate) | |
440 | { | |
441 | u_char cmd[12]; | |
5aa22af3 | 442 | |
87da3235 | 443 | DPRINTK("move: 0x%x => 0x%x\n",src,dest); |
daa6eda6 GK |
444 | if (0 == trans) |
445 | trans = ch->firsts[CHET_MT]; | |
446 | memset(cmd,0,sizeof(cmd)); | |
447 | cmd[0] = MOVE_MEDIUM; | |
9cb78c16 | 448 | cmd[1] = (ch->device->lun & 0x7) << 5; |
daa6eda6 GK |
449 | cmd[2] = (trans >> 8) & 0xff; |
450 | cmd[3] = trans & 0xff; | |
451 | cmd[4] = (src >> 8) & 0xff; | |
452 | cmd[5] = src & 0xff; | |
453 | cmd[6] = (dest >> 8) & 0xff; | |
454 | cmd[7] = dest & 0xff; | |
455 | cmd[10] = rotate ? 1 : 0; | |
a9a47bf5 | 456 | return ch_do_scsi(ch, cmd, 12, NULL,0, DMA_NONE); |
daa6eda6 GK |
457 | } |
458 | ||
459 | static int | |
460 | ch_exchange(scsi_changer *ch, u_int trans, u_int src, | |
461 | u_int dest1, u_int dest2, int rotate1, int rotate2) | |
462 | { | |
463 | u_char cmd[12]; | |
5aa22af3 | 464 | |
87da3235 | 465 | DPRINTK("exchange: 0x%x => 0x%x => 0x%x\n", |
daa6eda6 GK |
466 | src,dest1,dest2); |
467 | if (0 == trans) | |
468 | trans = ch->firsts[CHET_MT]; | |
469 | memset(cmd,0,sizeof(cmd)); | |
470 | cmd[0] = EXCHANGE_MEDIUM; | |
9cb78c16 | 471 | cmd[1] = (ch->device->lun & 0x7) << 5; |
daa6eda6 GK |
472 | cmd[2] = (trans >> 8) & 0xff; |
473 | cmd[3] = trans & 0xff; | |
474 | cmd[4] = (src >> 8) & 0xff; | |
475 | cmd[5] = src & 0xff; | |
476 | cmd[6] = (dest1 >> 8) & 0xff; | |
477 | cmd[7] = dest1 & 0xff; | |
478 | cmd[8] = (dest2 >> 8) & 0xff; | |
479 | cmd[9] = dest2 & 0xff; | |
480 | cmd[10] = (rotate1 ? 1 : 0) | (rotate2 ? 2 : 0); | |
5aa22af3 | 481 | |
a9a47bf5 | 482 | return ch_do_scsi(ch, cmd, 12, NULL, 0, DMA_NONE); |
daa6eda6 GK |
483 | } |
484 | ||
485 | static void | |
486 | ch_check_voltag(char *tag) | |
487 | { | |
488 | int i; | |
489 | ||
490 | for (i = 0; i < 32; i++) { | |
491 | /* restrict to ascii */ | |
492 | if (tag[i] >= 0x7f || tag[i] < 0x20) | |
493 | tag[i] = ' '; | |
494 | /* don't allow search wildcards */ | |
495 | if (tag[i] == '?' || | |
496 | tag[i] == '*') | |
497 | tag[i] = ' '; | |
498 | } | |
499 | } | |
500 | ||
501 | static int | |
502 | ch_set_voltag(scsi_changer *ch, u_int elem, | |
503 | int alternate, int clear, u_char *tag) | |
504 | { | |
505 | u_char cmd[12]; | |
506 | u_char *buffer; | |
507 | int result; | |
508 | ||
4530a169 | 509 | buffer = kzalloc(512, GFP_KERNEL); |
daa6eda6 GK |
510 | if (!buffer) |
511 | return -ENOMEM; | |
daa6eda6 | 512 | |
87da3235 | 513 | DPRINTK("%s %s voltag: 0x%x => \"%s\"\n", |
daa6eda6 GK |
514 | clear ? "clear" : "set", |
515 | alternate ? "alternate" : "primary", | |
516 | elem, tag); | |
517 | memset(cmd,0,sizeof(cmd)); | |
518 | cmd[0] = SEND_VOLUME_TAG; | |
9cb78c16 | 519 | cmd[1] = ((ch->device->lun & 0x7) << 5) | |
daa6eda6 GK |
520 | ch_elem_to_typecode(ch,elem); |
521 | cmd[2] = (elem >> 8) & 0xff; | |
522 | cmd[3] = elem & 0xff; | |
523 | cmd[5] = clear | |
524 | ? (alternate ? 0x0d : 0x0c) | |
525 | : (alternate ? 0x0b : 0x0a); | |
5aa22af3 | 526 | |
daa6eda6 GK |
527 | cmd[9] = 255; |
528 | ||
529 | memcpy(buffer,tag,32); | |
530 | ch_check_voltag(buffer); | |
531 | ||
a9a47bf5 | 532 | result = ch_do_scsi(ch, cmd, 12, buffer, 256, DMA_TO_DEVICE); |
daa6eda6 GK |
533 | kfree(buffer); |
534 | return result; | |
535 | } | |
536 | ||
fe08ac31 | 537 | static int ch_gstatus(scsi_changer *ch, int type, unsigned char __user *dest) |
daa6eda6 GK |
538 | { |
539 | int retval = 0; | |
540 | u_char data[16]; | |
541 | unsigned int i; | |
5aa22af3 | 542 | |
0b950672 | 543 | mutex_lock(&ch->lock); |
daa6eda6 GK |
544 | for (i = 0; i < ch->counts[type]; i++) { |
545 | if (0 != ch_read_element_status | |
546 | (ch, ch->firsts[type]+i,data)) { | |
547 | retval = -EIO; | |
548 | break; | |
549 | } | |
550 | put_user(data[2], dest+i); | |
551 | if (data[2] & CESTATUS_EXCEPT) | |
87da3235 | 552 | VPRINTK(KERN_INFO, "element 0x%x: asc=0x%x, ascq=0x%x\n", |
daa6eda6 GK |
553 | ch->firsts[type]+i, |
554 | (int)data[4],(int)data[5]); | |
555 | retval = ch_read_element_status | |
556 | (ch, ch->firsts[type]+i,data); | |
557 | if (0 != retval) | |
558 | break; | |
559 | } | |
0b950672 | 560 | mutex_unlock(&ch->lock); |
daa6eda6 GK |
561 | return retval; |
562 | } | |
563 | ||
564 | /* ------------------------------------------------------------------------ */ | |
565 | ||
566 | static int | |
567 | ch_release(struct inode *inode, struct file *file) | |
568 | { | |
569 | scsi_changer *ch = file->private_data; | |
570 | ||
571 | scsi_device_put(ch->device); | |
572 | file->private_data = NULL; | |
573 | return 0; | |
574 | } | |
575 | ||
576 | static int | |
577 | ch_open(struct inode *inode, struct file *file) | |
578 | { | |
da707c54 | 579 | scsi_changer *ch; |
daa6eda6 GK |
580 | int minor = iminor(inode); |
581 | ||
c45d15d2 | 582 | mutex_lock(&ch_mutex); |
da707c54 FT |
583 | spin_lock(&ch_index_lock); |
584 | ch = idr_find(&ch_index_idr, minor); | |
585 | ||
daa6eda6 | 586 | if (NULL == ch || scsi_device_get(ch->device)) { |
da707c54 | 587 | spin_unlock(&ch_index_lock); |
c45d15d2 | 588 | mutex_unlock(&ch_mutex); |
daa6eda6 GK |
589 | return -ENXIO; |
590 | } | |
da707c54 | 591 | spin_unlock(&ch_index_lock); |
daa6eda6 GK |
592 | |
593 | file->private_data = ch; | |
c45d15d2 | 594 | mutex_unlock(&ch_mutex); |
daa6eda6 GK |
595 | return 0; |
596 | } | |
597 | ||
598 | static int | |
599 | ch_checkrange(scsi_changer *ch, unsigned int type, unsigned int unit) | |
600 | { | |
601 | if (type >= CH_TYPES || unit >= ch->counts[type]) | |
602 | return -1; | |
603 | return 0; | |
604 | } | |
605 | ||
f7fea185 | 606 | static long ch_ioctl(struct file *file, |
daa6eda6 GK |
607 | unsigned int cmd, unsigned long arg) |
608 | { | |
609 | scsi_changer *ch = file->private_data; | |
610 | int retval; | |
fe08ac31 | 611 | void __user *argp = (void __user *)arg; |
5aa22af3 | 612 | |
906d15fb CH |
613 | retval = scsi_ioctl_block_when_processing_errors(ch->device, cmd, |
614 | file->f_flags & O_NDELAY); | |
615 | if (retval) | |
616 | return retval; | |
617 | ||
daa6eda6 GK |
618 | switch (cmd) { |
619 | case CHIOGPARAMS: | |
620 | { | |
621 | struct changer_params params; | |
5aa22af3 | 622 | |
daa6eda6 GK |
623 | params.cp_curpicker = 0; |
624 | params.cp_npickers = ch->counts[CHET_MT]; | |
625 | params.cp_nslots = ch->counts[CHET_ST]; | |
626 | params.cp_nportals = ch->counts[CHET_IE]; | |
627 | params.cp_ndrives = ch->counts[CHET_DT]; | |
5aa22af3 | 628 | |
fe08ac31 | 629 | if (copy_to_user(argp, ¶ms, sizeof(params))) |
daa6eda6 GK |
630 | return -EFAULT; |
631 | return 0; | |
632 | } | |
633 | case CHIOGVPARAMS: | |
634 | { | |
635 | struct changer_vendor_params vparams; | |
636 | ||
637 | memset(&vparams,0,sizeof(vparams)); | |
638 | if (ch->counts[CHET_V1]) { | |
639 | vparams.cvp_n1 = ch->counts[CHET_V1]; | |
640 | strncpy(vparams.cvp_label1,vendor_labels[0],16); | |
641 | } | |
642 | if (ch->counts[CHET_V2]) { | |
643 | vparams.cvp_n2 = ch->counts[CHET_V2]; | |
644 | strncpy(vparams.cvp_label2,vendor_labels[1],16); | |
645 | } | |
646 | if (ch->counts[CHET_V3]) { | |
647 | vparams.cvp_n3 = ch->counts[CHET_V3]; | |
648 | strncpy(vparams.cvp_label3,vendor_labels[2],16); | |
649 | } | |
650 | if (ch->counts[CHET_V4]) { | |
651 | vparams.cvp_n4 = ch->counts[CHET_V4]; | |
652 | strncpy(vparams.cvp_label4,vendor_labels[3],16); | |
653 | } | |
fe08ac31 | 654 | if (copy_to_user(argp, &vparams, sizeof(vparams))) |
daa6eda6 GK |
655 | return -EFAULT; |
656 | return 0; | |
657 | } | |
5aa22af3 | 658 | |
daa6eda6 GK |
659 | case CHIOPOSITION: |
660 | { | |
661 | struct changer_position pos; | |
5aa22af3 | 662 | |
fe08ac31 | 663 | if (copy_from_user(&pos, argp, sizeof (pos))) |
daa6eda6 GK |
664 | return -EFAULT; |
665 | ||
666 | if (0 != ch_checkrange(ch, pos.cp_type, pos.cp_unit)) { | |
87da3235 | 667 | DPRINTK("CHIOPOSITION: invalid parameter\n"); |
daa6eda6 GK |
668 | return -EBADSLT; |
669 | } | |
0b950672 | 670 | mutex_lock(&ch->lock); |
daa6eda6 GK |
671 | retval = ch_position(ch,0, |
672 | ch->firsts[pos.cp_type] + pos.cp_unit, | |
673 | pos.cp_flags & CP_INVERT); | |
0b950672 | 674 | mutex_unlock(&ch->lock); |
daa6eda6 GK |
675 | return retval; |
676 | } | |
5aa22af3 | 677 | |
daa6eda6 GK |
678 | case CHIOMOVE: |
679 | { | |
680 | struct changer_move mv; | |
681 | ||
fe08ac31 | 682 | if (copy_from_user(&mv, argp, sizeof (mv))) |
daa6eda6 GK |
683 | return -EFAULT; |
684 | ||
685 | if (0 != ch_checkrange(ch, mv.cm_fromtype, mv.cm_fromunit) || | |
686 | 0 != ch_checkrange(ch, mv.cm_totype, mv.cm_tounit )) { | |
87da3235 | 687 | DPRINTK("CHIOMOVE: invalid parameter\n"); |
daa6eda6 GK |
688 | return -EBADSLT; |
689 | } | |
5aa22af3 | 690 | |
0b950672 | 691 | mutex_lock(&ch->lock); |
daa6eda6 GK |
692 | retval = ch_move(ch,0, |
693 | ch->firsts[mv.cm_fromtype] + mv.cm_fromunit, | |
694 | ch->firsts[mv.cm_totype] + mv.cm_tounit, | |
695 | mv.cm_flags & CM_INVERT); | |
0b950672 | 696 | mutex_unlock(&ch->lock); |
daa6eda6 GK |
697 | return retval; |
698 | } | |
699 | ||
700 | case CHIOEXCHANGE: | |
701 | { | |
702 | struct changer_exchange mv; | |
5aa22af3 | 703 | |
fe08ac31 | 704 | if (copy_from_user(&mv, argp, sizeof (mv))) |
daa6eda6 GK |
705 | return -EFAULT; |
706 | ||
707 | if (0 != ch_checkrange(ch, mv.ce_srctype, mv.ce_srcunit ) || | |
708 | 0 != ch_checkrange(ch, mv.ce_fdsttype, mv.ce_fdstunit) || | |
709 | 0 != ch_checkrange(ch, mv.ce_sdsttype, mv.ce_sdstunit)) { | |
87da3235 | 710 | DPRINTK("CHIOEXCHANGE: invalid parameter\n"); |
daa6eda6 GK |
711 | return -EBADSLT; |
712 | } | |
5aa22af3 | 713 | |
0b950672 | 714 | mutex_lock(&ch->lock); |
daa6eda6 GK |
715 | retval = ch_exchange |
716 | (ch,0, | |
717 | ch->firsts[mv.ce_srctype] + mv.ce_srcunit, | |
718 | ch->firsts[mv.ce_fdsttype] + mv.ce_fdstunit, | |
719 | ch->firsts[mv.ce_sdsttype] + mv.ce_sdstunit, | |
720 | mv.ce_flags & CE_INVERT1, mv.ce_flags & CE_INVERT2); | |
0b950672 | 721 | mutex_unlock(&ch->lock); |
daa6eda6 GK |
722 | return retval; |
723 | } | |
724 | ||
725 | case CHIOGSTATUS: | |
726 | { | |
727 | struct changer_element_status ces; | |
5aa22af3 | 728 | |
fe08ac31 | 729 | if (copy_from_user(&ces, argp, sizeof (ces))) |
daa6eda6 GK |
730 | return -EFAULT; |
731 | if (ces.ces_type < 0 || ces.ces_type >= CH_TYPES) | |
732 | return -EINVAL; | |
733 | ||
734 | return ch_gstatus(ch, ces.ces_type, ces.ces_data); | |
735 | } | |
736 | ||
737 | case CHIOGELEM: | |
738 | { | |
739 | struct changer_get_element cge; | |
d70d4667 HH |
740 | u_char ch_cmd[12]; |
741 | u_char *buffer; | |
daa6eda6 GK |
742 | unsigned int elem; |
743 | int result,i; | |
5aa22af3 | 744 | |
fe08ac31 | 745 | if (copy_from_user(&cge, argp, sizeof (cge))) |
daa6eda6 GK |
746 | return -EFAULT; |
747 | ||
748 | if (0 != ch_checkrange(ch, cge.cge_type, cge.cge_unit)) | |
749 | return -EINVAL; | |
750 | elem = ch->firsts[cge.cge_type] + cge.cge_unit; | |
5aa22af3 | 751 | |
daa6eda6 GK |
752 | buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); |
753 | if (!buffer) | |
754 | return -ENOMEM; | |
0b950672 | 755 | mutex_lock(&ch->lock); |
5aa22af3 | 756 | |
daa6eda6 | 757 | voltag_retry: |
d70d4667 HH |
758 | memset(ch_cmd, 0, sizeof(ch_cmd)); |
759 | ch_cmd[0] = READ_ELEMENT_STATUS; | |
9cb78c16 | 760 | ch_cmd[1] = ((ch->device->lun & 0x7) << 5) | |
daa6eda6 GK |
761 | (ch->voltags ? 0x10 : 0) | |
762 | ch_elem_to_typecode(ch,elem); | |
d70d4667 HH |
763 | ch_cmd[2] = (elem >> 8) & 0xff; |
764 | ch_cmd[3] = elem & 0xff; | |
765 | ch_cmd[5] = 1; | |
766 | ch_cmd[9] = 255; | |
5aa22af3 | 767 | |
a9a47bf5 HR |
768 | result = ch_do_scsi(ch, ch_cmd, 12, |
769 | buffer, 256, DMA_FROM_DEVICE); | |
d70d4667 | 770 | if (!result) { |
daa6eda6 GK |
771 | cge.cge_status = buffer[18]; |
772 | cge.cge_flags = 0; | |
773 | if (buffer[18] & CESTATUS_EXCEPT) { | |
774 | cge.cge_errno = EIO; | |
775 | } | |
776 | if (buffer[25] & 0x80) { | |
777 | cge.cge_flags |= CGE_SRC; | |
778 | if (buffer[25] & 0x40) | |
779 | cge.cge_flags |= CGE_INVERT; | |
780 | elem = (buffer[26]<<8) | buffer[27]; | |
781 | for (i = 0; i < 4; i++) { | |
782 | if (elem >= ch->firsts[i] && | |
783 | elem < ch->firsts[i] + ch->counts[i]) { | |
784 | cge.cge_srctype = i; | |
785 | cge.cge_srcunit = elem-ch->firsts[i]; | |
786 | } | |
787 | } | |
788 | } | |
789 | if ((buffer[22] & 0x30) == 0x30) { | |
790 | cge.cge_flags |= CGE_IDLUN; | |
791 | cge.cge_id = buffer[23]; | |
792 | cge.cge_lun = buffer[22] & 7; | |
793 | } | |
794 | if (buffer[9] & 0x80) { | |
795 | cge.cge_flags |= CGE_PVOLTAG; | |
796 | memcpy(cge.cge_pvoltag,buffer+28,36); | |
797 | } | |
798 | if (buffer[9] & 0x40) { | |
799 | cge.cge_flags |= CGE_AVOLTAG; | |
800 | memcpy(cge.cge_avoltag,buffer+64,36); | |
801 | } | |
802 | } else if (ch->voltags) { | |
803 | ch->voltags = 0; | |
87da3235 | 804 | VPRINTK(KERN_INFO, "device has no volume tag support\n"); |
daa6eda6 GK |
805 | goto voltag_retry; |
806 | } | |
807 | kfree(buffer); | |
0b950672 | 808 | mutex_unlock(&ch->lock); |
5aa22af3 | 809 | |
fe08ac31 | 810 | if (copy_to_user(argp, &cge, sizeof (cge))) |
daa6eda6 GK |
811 | return -EFAULT; |
812 | return result; | |
813 | } | |
814 | ||
815 | case CHIOINITELEM: | |
816 | { | |
0b950672 | 817 | mutex_lock(&ch->lock); |
daa6eda6 | 818 | retval = ch_init_elem(ch); |
0b950672 | 819 | mutex_unlock(&ch->lock); |
daa6eda6 GK |
820 | return retval; |
821 | } | |
5aa22af3 | 822 | |
daa6eda6 GK |
823 | case CHIOSVOLTAG: |
824 | { | |
825 | struct changer_set_voltag csv; | |
826 | int elem; | |
827 | ||
fe08ac31 | 828 | if (copy_from_user(&csv, argp, sizeof(csv))) |
daa6eda6 GK |
829 | return -EFAULT; |
830 | ||
831 | if (0 != ch_checkrange(ch, csv.csv_type, csv.csv_unit)) { | |
87da3235 | 832 | DPRINTK("CHIOSVOLTAG: invalid parameter\n"); |
daa6eda6 GK |
833 | return -EBADSLT; |
834 | } | |
835 | elem = ch->firsts[csv.csv_type] + csv.csv_unit; | |
0b950672 | 836 | mutex_lock(&ch->lock); |
daa6eda6 GK |
837 | retval = ch_set_voltag(ch, elem, |
838 | csv.csv_flags & CSV_AVOLTAG, | |
839 | csv.csv_flags & CSV_CLEARTAG, | |
840 | csv.csv_voltag); | |
0b950672 | 841 | mutex_unlock(&ch->lock); |
daa6eda6 GK |
842 | return retval; |
843 | } | |
844 | ||
845 | default: | |
fe08ac31 | 846 | return scsi_ioctl(ch->device, cmd, argp); |
daa6eda6 GK |
847 | |
848 | } | |
849 | } | |
850 | ||
851 | #ifdef CONFIG_COMPAT | |
852 | ||
853 | struct changer_element_status32 { | |
854 | int ces_type; | |
855 | compat_uptr_t ces_data; | |
856 | }; | |
857 | #define CHIOGSTATUS32 _IOW('c', 8,struct changer_element_status32) | |
858 | ||
859 | static long ch_ioctl_compat(struct file * file, | |
860 | unsigned int cmd, unsigned long arg) | |
861 | { | |
862 | scsi_changer *ch = file->private_data; | |
5aa22af3 | 863 | |
daa6eda6 GK |
864 | switch (cmd) { |
865 | case CHIOGPARAMS: | |
866 | case CHIOGVPARAMS: | |
867 | case CHIOPOSITION: | |
868 | case CHIOMOVE: | |
869 | case CHIOEXCHANGE: | |
870 | case CHIOGELEM: | |
871 | case CHIOINITELEM: | |
872 | case CHIOSVOLTAG: | |
873 | /* compatible */ | |
f7fea185 | 874 | return ch_ioctl(file, cmd, arg); |
daa6eda6 GK |
875 | case CHIOGSTATUS32: |
876 | { | |
877 | struct changer_element_status32 ces32; | |
fe08ac31 | 878 | unsigned char __user *data; |
5aa22af3 | 879 | |
fe08ac31 | 880 | if (copy_from_user(&ces32, (void __user *)arg, sizeof (ces32))) |
daa6eda6 GK |
881 | return -EFAULT; |
882 | if (ces32.ces_type < 0 || ces32.ces_type >= CH_TYPES) | |
883 | return -EINVAL; | |
884 | ||
885 | data = compat_ptr(ces32.ces_data); | |
886 | return ch_gstatus(ch, ces32.ces_type, data); | |
887 | } | |
888 | default: | |
889 | // return scsi_ioctl_compat(ch->device, cmd, (void*)arg); | |
890 | return -ENOIOCTLCMD; | |
891 | ||
892 | } | |
893 | } | |
894 | #endif | |
895 | ||
896 | /* ------------------------------------------------------------------------ */ | |
897 | ||
898 | static int ch_probe(struct device *dev) | |
899 | { | |
900 | struct scsi_device *sd = to_scsi_device(dev); | |
ee959b00 | 901 | struct device *class_dev; |
b98c52b5 | 902 | int ret; |
daa6eda6 | 903 | scsi_changer *ch; |
a3d2c2e8 | 904 | |
daa6eda6 GK |
905 | if (sd->type != TYPE_MEDIUM_CHANGER) |
906 | return -ENODEV; | |
a3d2c2e8 | 907 | |
4530a169 | 908 | ch = kzalloc(sizeof(*ch), GFP_KERNEL); |
daa6eda6 GK |
909 | if (NULL == ch) |
910 | return -ENOMEM; | |
911 | ||
b98c52b5 | 912 | idr_preload(GFP_KERNEL); |
da707c54 | 913 | spin_lock(&ch_index_lock); |
b98c52b5 | 914 | ret = idr_alloc(&ch_index_idr, ch, 0, CH_MAX_DEVS + 1, GFP_NOWAIT); |
da707c54 | 915 | spin_unlock(&ch_index_lock); |
b98c52b5 | 916 | idr_preload_end(); |
da707c54 | 917 | |
b98c52b5 TH |
918 | if (ret < 0) { |
919 | if (ret == -ENOSPC) | |
920 | ret = -ENODEV; | |
da707c54 | 921 | goto free_ch; |
da707c54 FT |
922 | } |
923 | ||
b98c52b5 | 924 | ch->minor = ret; |
daa6eda6 | 925 | sprintf(ch->name,"ch%d",ch->minor); |
a3d2c2e8 | 926 | |
d73a1a67 GKH |
927 | class_dev = device_create(ch_sysfs_class, dev, |
928 | MKDEV(SCSI_CHANGER_MAJOR, ch->minor), ch, | |
929 | "s%s", ch->name); | |
a3d2c2e8 | 930 | if (IS_ERR(class_dev)) { |
28c31729 HR |
931 | sdev_printk(KERN_WARNING, sd, "ch%d: device_create failed\n", |
932 | ch->minor); | |
da707c54 FT |
933 | ret = PTR_ERR(class_dev); |
934 | goto remove_idr; | |
a3d2c2e8 FT |
935 | } |
936 | ||
0b950672 | 937 | mutex_init(&ch->lock); |
daa6eda6 GK |
938 | ch->device = sd; |
939 | ch_readconfig(ch); | |
940 | if (init) | |
941 | ch_init_elem(ch); | |
942 | ||
3d164fb0 | 943 | dev_set_drvdata(dev, ch); |
017560fc | 944 | sdev_printk(KERN_INFO, sd, "Attached scsi changer %s\n", ch->name); |
a3d2c2e8 | 945 | |
daa6eda6 | 946 | return 0; |
da707c54 | 947 | remove_idr: |
b98c52b5 | 948 | idr_remove(&ch_index_idr, ch->minor); |
da707c54 FT |
949 | free_ch: |
950 | kfree(ch); | |
951 | return ret; | |
daa6eda6 GK |
952 | } |
953 | ||
954 | static int ch_remove(struct device *dev) | |
955 | { | |
da707c54 | 956 | scsi_changer *ch = dev_get_drvdata(dev); |
daa6eda6 | 957 | |
da707c54 FT |
958 | spin_lock(&ch_index_lock); |
959 | idr_remove(&ch_index_idr, ch->minor); | |
960 | spin_unlock(&ch_index_lock); | |
daa6eda6 | 961 | |
ee959b00 | 962 | device_destroy(ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR,ch->minor)); |
daa6eda6 GK |
963 | kfree(ch->dt); |
964 | kfree(ch); | |
daa6eda6 GK |
965 | return 0; |
966 | } | |
967 | ||
5aa22af3 | 968 | static struct scsi_driver ch_template = { |
5aa22af3 FT |
969 | .gendrv = { |
970 | .name = "ch", | |
3af6b352 | 971 | .owner = THIS_MODULE, |
5aa22af3 FT |
972 | .probe = ch_probe, |
973 | .remove = ch_remove, | |
974 | }, | |
975 | }; | |
976 | ||
977 | static const struct file_operations changer_fops = { | |
978 | .owner = THIS_MODULE, | |
979 | .open = ch_open, | |
980 | .release = ch_release, | |
981 | .unlocked_ioctl = ch_ioctl, | |
982 | #ifdef CONFIG_COMPAT | |
983 | .compat_ioctl = ch_ioctl_compat, | |
984 | #endif | |
6038f373 | 985 | .llseek = noop_llseek, |
5aa22af3 FT |
986 | }; |
987 | ||
daa6eda6 GK |
988 | static int __init init_ch_module(void) |
989 | { | |
990 | int rc; | |
5aa22af3 | 991 | |
daa6eda6 | 992 | printk(KERN_INFO "SCSI Media Changer driver v" VERSION " \n"); |
21feb5cc | 993 | ch_sysfs_class = class_create(THIS_MODULE, "scsi_changer"); |
daa6eda6 GK |
994 | if (IS_ERR(ch_sysfs_class)) { |
995 | rc = PTR_ERR(ch_sysfs_class); | |
996 | return rc; | |
997 | } | |
998 | rc = register_chrdev(SCSI_CHANGER_MAJOR,"ch",&changer_fops); | |
999 | if (rc < 0) { | |
1000 | printk("Unable to get major %d for SCSI-Changer\n", | |
1001 | SCSI_CHANGER_MAJOR); | |
1002 | goto fail1; | |
1003 | } | |
1004 | rc = scsi_register_driver(&ch_template.gendrv); | |
1005 | if (rc < 0) | |
1006 | goto fail2; | |
1007 | return 0; | |
1008 | ||
1009 | fail2: | |
1010 | unregister_chrdev(SCSI_CHANGER_MAJOR, "ch"); | |
1011 | fail1: | |
21feb5cc | 1012 | class_destroy(ch_sysfs_class); |
daa6eda6 GK |
1013 | return rc; |
1014 | } | |
1015 | ||
5aa22af3 | 1016 | static void __exit exit_ch_module(void) |
daa6eda6 GK |
1017 | { |
1018 | scsi_unregister_driver(&ch_template.gendrv); | |
1019 | unregister_chrdev(SCSI_CHANGER_MAJOR, "ch"); | |
21feb5cc | 1020 | class_destroy(ch_sysfs_class); |
da707c54 | 1021 | idr_destroy(&ch_index_idr); |
daa6eda6 GK |
1022 | } |
1023 | ||
1024 | module_init(init_ch_module); | |
1025 | module_exit(exit_ch_module); | |
1026 | ||
1027 | /* | |
1028 | * Local variables: | |
1029 | * c-basic-offset: 8 | |
1030 | * End: | |
1031 | */ |