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b6cba4ee SB |
1 | /* |
2 | * drivers/s390/char/tape_3590.c | |
3 | * tape device discipline for 3590 tapes. | |
4 | * | |
cced1dd4 | 5 | * Copyright IBM Corp. 2001,2006 |
b6cba4ee SB |
6 | * Author(s): Stefan Bader <shbader@de.ibm.com> |
7 | * Michael Holzheu <holzheu@de.ibm.com> | |
8 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
9 | */ | |
10 | ||
b6cba4ee SB |
11 | #include <linux/module.h> |
12 | #include <linux/init.h> | |
13 | #include <linux/bio.h> | |
cced1dd4 | 14 | #include <asm/ebcdic.h> |
b6cba4ee SB |
15 | |
16 | #define TAPE_DBF_AREA tape_3590_dbf | |
17 | ||
18 | #include "tape.h" | |
19 | #include "tape_std.h" | |
20 | #include "tape_3590.h" | |
21 | ||
22 | /* | |
23 | * Pointer to debug area. | |
24 | */ | |
25 | debug_info_t *TAPE_DBF_AREA = NULL; | |
26 | EXPORT_SYMBOL(TAPE_DBF_AREA); | |
27 | ||
28 | /******************************************************************* | |
29 | * Error Recovery fuctions: | |
30 | * - Read Opposite: implemented | |
31 | * - Read Device (buffered) log: BRA | |
32 | * - Read Library log: BRA | |
33 | * - Swap Devices: BRA | |
cced1dd4 | 34 | * - Long Busy: implemented |
b6cba4ee SB |
35 | * - Special Intercept: BRA |
36 | * - Read Alternate: implemented | |
37 | *******************************************************************/ | |
38 | ||
39 | #define PRINTK_HEADER "TAPE_3590: " | |
40 | ||
41 | static const char *tape_3590_msg[TAPE_3590_MAX_MSG] = { | |
42 | [0x00] = "", | |
43 | [0x10] = "Lost Sense", | |
44 | [0x11] = "Assigned Elsewhere", | |
45 | [0x12] = "Allegiance Reset", | |
46 | [0x13] = "Shared Access Violation", | |
47 | [0x20] = "Command Reject", | |
48 | [0x21] = "Configuration Error", | |
49 | [0x22] = "Protection Exception", | |
50 | [0x23] = "Write Protect", | |
51 | [0x24] = "Write Length", | |
52 | [0x25] = "Read-Only Format", | |
53 | [0x31] = "Beginning of Partition", | |
54 | [0x33] = "End of Partition", | |
55 | [0x34] = "End of Data", | |
56 | [0x35] = "Block not found", | |
57 | [0x40] = "Device Intervention", | |
58 | [0x41] = "Loader Intervention", | |
59 | [0x42] = "Library Intervention", | |
60 | [0x50] = "Write Error", | |
61 | [0x51] = "Erase Error", | |
62 | [0x52] = "Formatting Error", | |
63 | [0x53] = "Read Error", | |
64 | [0x54] = "Unsupported Format", | |
65 | [0x55] = "No Formatting", | |
66 | [0x56] = "Positioning lost", | |
67 | [0x57] = "Read Length", | |
68 | [0x60] = "Unsupported Medium", | |
69 | [0x61] = "Medium Length Error", | |
70 | [0x62] = "Medium removed", | |
71 | [0x64] = "Load Check", | |
72 | [0x65] = "Unload Check", | |
73 | [0x70] = "Equipment Check", | |
74 | [0x71] = "Bus out Check", | |
75 | [0x72] = "Protocol Error", | |
76 | [0x73] = "Interface Error", | |
77 | [0x74] = "Overrun", | |
78 | [0x75] = "Halt Signal", | |
79 | [0x90] = "Device fenced", | |
80 | [0x91] = "Device Path fenced", | |
81 | [0xa0] = "Volume misplaced", | |
82 | [0xa1] = "Volume inaccessible", | |
83 | [0xa2] = "Volume in input", | |
84 | [0xa3] = "Volume ejected", | |
85 | [0xa4] = "All categories reserved", | |
86 | [0xa5] = "Duplicate Volume", | |
87 | [0xa6] = "Library Manager Offline", | |
88 | [0xa7] = "Library Output Station full", | |
89 | [0xa8] = "Vision System non-operational", | |
90 | [0xa9] = "Library Manager Equipment Check", | |
91 | [0xaa] = "Library Equipment Check", | |
92 | [0xab] = "All Library Cells full", | |
93 | [0xac] = "No Cleaner Volumes in Library", | |
94 | [0xad] = "I/O Station door open", | |
95 | [0xae] = "Subsystem environmental alert", | |
96 | }; | |
97 | ||
cced1dd4 MH |
98 | static int crypt_supported(struct tape_device *device) |
99 | { | |
100 | return TAPE390_CRYPT_SUPPORTED(TAPE_3590_CRYPT_INFO(device)); | |
101 | } | |
102 | ||
103 | static int crypt_enabled(struct tape_device *device) | |
104 | { | |
105 | return TAPE390_CRYPT_ON(TAPE_3590_CRYPT_INFO(device)); | |
106 | } | |
107 | ||
108 | static void ext_to_int_kekl(struct tape390_kekl *in, | |
109 | struct tape3592_kekl *out) | |
110 | { | |
111 | int i; | |
112 | ||
113 | memset(out, 0, sizeof(*out)); | |
114 | if (in->type == TAPE390_KEKL_TYPE_HASH) | |
115 | out->flags |= 0x40; | |
116 | if (in->type_on_tape == TAPE390_KEKL_TYPE_HASH) | |
117 | out->flags |= 0x80; | |
118 | strncpy(out->label, in->label, 64); | |
119 | for (i = strlen(in->label); i < sizeof(out->label); i++) | |
120 | out->label[i] = ' '; | |
121 | ASCEBC(out->label, sizeof(out->label)); | |
122 | } | |
123 | ||
124 | static void int_to_ext_kekl(struct tape3592_kekl *in, | |
125 | struct tape390_kekl *out) | |
126 | { | |
127 | memset(out, 0, sizeof(*out)); | |
128 | if(in->flags & 0x40) | |
129 | out->type = TAPE390_KEKL_TYPE_HASH; | |
130 | else | |
131 | out->type = TAPE390_KEKL_TYPE_LABEL; | |
132 | if(in->flags & 0x80) | |
133 | out->type_on_tape = TAPE390_KEKL_TYPE_HASH; | |
134 | else | |
135 | out->type_on_tape = TAPE390_KEKL_TYPE_LABEL; | |
136 | memcpy(out->label, in->label, sizeof(in->label)); | |
137 | EBCASC(out->label, sizeof(in->label)); | |
138 | strstrip(out->label); | |
139 | } | |
140 | ||
141 | static void int_to_ext_kekl_pair(struct tape3592_kekl_pair *in, | |
142 | struct tape390_kekl_pair *out) | |
143 | { | |
144 | if (in->count == 0) { | |
145 | out->kekl[0].type = TAPE390_KEKL_TYPE_NONE; | |
146 | out->kekl[0].type_on_tape = TAPE390_KEKL_TYPE_NONE; | |
147 | out->kekl[1].type = TAPE390_KEKL_TYPE_NONE; | |
148 | out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE; | |
149 | } else if (in->count == 1) { | |
150 | int_to_ext_kekl(&in->kekl[0], &out->kekl[0]); | |
151 | out->kekl[1].type = TAPE390_KEKL_TYPE_NONE; | |
152 | out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE; | |
153 | } else if (in->count == 2) { | |
154 | int_to_ext_kekl(&in->kekl[0], &out->kekl[0]); | |
155 | int_to_ext_kekl(&in->kekl[1], &out->kekl[1]); | |
156 | } else { | |
157 | printk("Invalid KEKL number: %d\n", in->count); | |
158 | BUG(); | |
159 | } | |
160 | } | |
161 | ||
162 | static int check_ext_kekl(struct tape390_kekl *kekl) | |
163 | { | |
164 | if (kekl->type == TAPE390_KEKL_TYPE_NONE) | |
165 | goto invalid; | |
166 | if (kekl->type > TAPE390_KEKL_TYPE_HASH) | |
167 | goto invalid; | |
168 | if (kekl->type_on_tape == TAPE390_KEKL_TYPE_NONE) | |
169 | goto invalid; | |
170 | if (kekl->type_on_tape > TAPE390_KEKL_TYPE_HASH) | |
171 | goto invalid; | |
172 | if ((kekl->type == TAPE390_KEKL_TYPE_HASH) && | |
173 | (kekl->type_on_tape == TAPE390_KEKL_TYPE_LABEL)) | |
174 | goto invalid; | |
175 | ||
176 | return 0; | |
177 | invalid: | |
178 | return -EINVAL; | |
179 | } | |
180 | ||
181 | static int check_ext_kekl_pair(struct tape390_kekl_pair *kekls) | |
182 | { | |
183 | if (check_ext_kekl(&kekls->kekl[0])) | |
184 | goto invalid; | |
185 | if (check_ext_kekl(&kekls->kekl[1])) | |
186 | goto invalid; | |
187 | ||
188 | return 0; | |
189 | invalid: | |
190 | return -EINVAL; | |
191 | } | |
192 | ||
193 | /* | |
194 | * Query KEKLs | |
195 | */ | |
196 | static int tape_3592_kekl_query(struct tape_device *device, | |
197 | struct tape390_kekl_pair *ext_kekls) | |
198 | { | |
199 | struct tape_request *request; | |
200 | struct tape3592_kekl_query_order *order; | |
201 | struct tape3592_kekl_query_data *int_kekls; | |
202 | int rc; | |
203 | ||
204 | DBF_EVENT(6, "tape3592_kekl_query\n"); | |
205 | int_kekls = kmalloc(sizeof(*int_kekls), GFP_KERNEL|GFP_DMA); | |
206 | if (!int_kekls) | |
207 | return -ENOMEM; | |
208 | request = tape_alloc_request(2, sizeof(*order)); | |
209 | if (IS_ERR(request)) { | |
210 | rc = PTR_ERR(request); | |
211 | goto fail_malloc; | |
212 | } | |
213 | order = request->cpdata; | |
214 | memset(order,0,sizeof(*order)); | |
215 | order->code = 0xe2; | |
216 | order->max_count = 2; | |
217 | request->op = TO_KEKL_QUERY; | |
218 | tape_ccw_cc(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order); | |
219 | tape_ccw_end(request->cpaddr + 1, READ_SS_DATA, sizeof(*int_kekls), | |
220 | int_kekls); | |
221 | rc = tape_do_io(device, request); | |
222 | if (rc) | |
223 | goto fail_request; | |
224 | int_to_ext_kekl_pair(&int_kekls->kekls, ext_kekls); | |
225 | ||
226 | rc = 0; | |
227 | fail_request: | |
228 | tape_free_request(request); | |
229 | fail_malloc: | |
230 | kfree(int_kekls); | |
231 | return rc; | |
232 | } | |
233 | ||
234 | /* | |
235 | * IOCTL: Query KEKLs | |
236 | */ | |
237 | static int tape_3592_ioctl_kekl_query(struct tape_device *device, | |
238 | unsigned long arg) | |
239 | { | |
240 | int rc; | |
241 | struct tape390_kekl_pair *ext_kekls; | |
242 | ||
243 | DBF_EVENT(6, "tape_3592_ioctl_kekl_query\n"); | |
244 | if (!crypt_supported(device)) | |
245 | return -ENOSYS; | |
246 | if (!crypt_enabled(device)) | |
247 | return -EUNATCH; | |
248 | ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL); | |
249 | if (!ext_kekls) | |
250 | return -ENOMEM; | |
251 | rc = tape_3592_kekl_query(device, ext_kekls); | |
252 | if (rc != 0) | |
253 | goto fail; | |
254 | if (copy_to_user((char __user *) arg, ext_kekls, sizeof(*ext_kekls))) { | |
255 | rc = -EFAULT; | |
256 | goto fail; | |
257 | } | |
258 | rc = 0; | |
259 | fail: | |
260 | kfree(ext_kekls); | |
261 | return rc; | |
262 | } | |
263 | ||
264 | static int tape_3590_mttell(struct tape_device *device, int mt_count); | |
265 | ||
266 | /* | |
267 | * Set KEKLs | |
268 | */ | |
269 | static int tape_3592_kekl_set(struct tape_device *device, | |
270 | struct tape390_kekl_pair *ext_kekls) | |
271 | { | |
272 | struct tape_request *request; | |
273 | struct tape3592_kekl_set_order *order; | |
274 | ||
275 | DBF_EVENT(6, "tape3592_kekl_set\n"); | |
276 | if (check_ext_kekl_pair(ext_kekls)) { | |
277 | DBF_EVENT(6, "invalid kekls\n"); | |
278 | return -EINVAL; | |
279 | } | |
280 | if (tape_3590_mttell(device, 0) != 0) | |
281 | return -EBADSLT; | |
282 | request = tape_alloc_request(1, sizeof(*order)); | |
283 | if (IS_ERR(request)) | |
284 | return PTR_ERR(request); | |
285 | order = request->cpdata; | |
286 | memset(order, 0, sizeof(*order)); | |
287 | order->code = 0xe3; | |
288 | order->kekls.count = 2; | |
289 | ext_to_int_kekl(&ext_kekls->kekl[0], &order->kekls.kekl[0]); | |
290 | ext_to_int_kekl(&ext_kekls->kekl[1], &order->kekls.kekl[1]); | |
291 | request->op = TO_KEKL_SET; | |
292 | tape_ccw_end(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order); | |
293 | ||
294 | return tape_do_io_free(device, request); | |
295 | } | |
296 | ||
297 | /* | |
298 | * IOCTL: Set KEKLs | |
299 | */ | |
300 | static int tape_3592_ioctl_kekl_set(struct tape_device *device, | |
301 | unsigned long arg) | |
302 | { | |
303 | int rc; | |
304 | struct tape390_kekl_pair *ext_kekls; | |
305 | ||
306 | DBF_EVENT(6, "tape_3592_ioctl_kekl_set\n"); | |
307 | if (!crypt_supported(device)) | |
308 | return -ENOSYS; | |
309 | if (!crypt_enabled(device)) | |
310 | return -EUNATCH; | |
311 | ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL); | |
312 | if (!ext_kekls) | |
313 | return -ENOMEM; | |
314 | if (copy_from_user(ext_kekls, (char __user *)arg, sizeof(*ext_kekls))) { | |
315 | rc = -EFAULT; | |
316 | goto out; | |
317 | } | |
318 | rc = tape_3592_kekl_set(device, ext_kekls); | |
319 | out: | |
320 | kfree(ext_kekls); | |
321 | return rc; | |
322 | } | |
323 | ||
324 | /* | |
325 | * Enable encryption | |
326 | */ | |
327 | static int tape_3592_enable_crypt(struct tape_device *device) | |
328 | { | |
329 | struct tape_request *request; | |
330 | char *data; | |
331 | ||
332 | DBF_EVENT(6, "tape_3592_enable_crypt\n"); | |
333 | if (!crypt_supported(device)) | |
334 | return -ENOSYS; | |
335 | request = tape_alloc_request(2, 72); | |
336 | if (IS_ERR(request)) | |
337 | return PTR_ERR(request); | |
338 | data = request->cpdata; | |
339 | memset(data,0,72); | |
340 | ||
341 | data[0] = 0x05; | |
342 | data[36 + 0] = 0x03; | |
343 | data[36 + 1] = 0x03; | |
344 | data[36 + 4] = 0x40; | |
345 | data[36 + 6] = 0x01; | |
346 | data[36 + 14] = 0x2f; | |
347 | data[36 + 18] = 0xc3; | |
348 | data[36 + 35] = 0x72; | |
349 | request->op = TO_CRYPT_ON; | |
350 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); | |
351 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); | |
352 | return tape_do_io_free(device, request); | |
353 | } | |
354 | ||
355 | /* | |
356 | * Disable encryption | |
357 | */ | |
358 | static int tape_3592_disable_crypt(struct tape_device *device) | |
359 | { | |
360 | struct tape_request *request; | |
361 | char *data; | |
362 | ||
363 | DBF_EVENT(6, "tape_3592_disable_crypt\n"); | |
364 | if (!crypt_supported(device)) | |
365 | return -ENOSYS; | |
366 | request = tape_alloc_request(2, 72); | |
367 | if (IS_ERR(request)) | |
368 | return PTR_ERR(request); | |
369 | data = request->cpdata; | |
370 | memset(data,0,72); | |
371 | ||
372 | data[0] = 0x05; | |
373 | data[36 + 0] = 0x03; | |
374 | data[36 + 1] = 0x03; | |
375 | data[36 + 35] = 0x32; | |
376 | ||
377 | request->op = TO_CRYPT_OFF; | |
378 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); | |
379 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); | |
380 | ||
381 | return tape_do_io_free(device, request); | |
382 | } | |
383 | ||
384 | /* | |
385 | * IOCTL: Set encryption status | |
386 | */ | |
387 | static int tape_3592_ioctl_crypt_set(struct tape_device *device, | |
388 | unsigned long arg) | |
389 | { | |
390 | struct tape390_crypt_info info; | |
391 | ||
392 | DBF_EVENT(6, "tape_3592_ioctl_crypt_set\n"); | |
393 | if (!crypt_supported(device)) | |
394 | return -ENOSYS; | |
395 | if (copy_from_user(&info, (char __user *)arg, sizeof(info))) | |
396 | return -EFAULT; | |
397 | if (info.status & ~TAPE390_CRYPT_ON_MASK) | |
398 | return -EINVAL; | |
399 | if (info.status & TAPE390_CRYPT_ON_MASK) | |
400 | return tape_3592_enable_crypt(device); | |
401 | else | |
402 | return tape_3592_disable_crypt(device); | |
403 | } | |
404 | ||
405 | static int tape_3590_sense_medium(struct tape_device *device); | |
406 | ||
407 | /* | |
408 | * IOCTL: Query enryption status | |
409 | */ | |
410 | static int tape_3592_ioctl_crypt_query(struct tape_device *device, | |
411 | unsigned long arg) | |
412 | { | |
413 | DBF_EVENT(6, "tape_3592_ioctl_crypt_query\n"); | |
414 | if (!crypt_supported(device)) | |
415 | return -ENOSYS; | |
416 | tape_3590_sense_medium(device); | |
417 | if (copy_to_user((char __user *) arg, &TAPE_3590_CRYPT_INFO(device), | |
418 | sizeof(TAPE_3590_CRYPT_INFO(device)))) | |
419 | return -EFAULT; | |
420 | else | |
421 | return 0; | |
422 | } | |
423 | ||
b6cba4ee SB |
424 | /* |
425 | * 3590 IOCTL Overload | |
426 | */ | |
427 | static int | |
428 | tape_3590_ioctl(struct tape_device *device, unsigned int cmd, unsigned long arg) | |
429 | { | |
430 | switch (cmd) { | |
431 | case TAPE390_DISPLAY: { | |
432 | struct display_struct disp; | |
433 | ||
434 | if (copy_from_user(&disp, (char __user *) arg, sizeof(disp))) | |
435 | return -EFAULT; | |
436 | ||
437 | return tape_std_display(device, &disp); | |
438 | } | |
cced1dd4 MH |
439 | case TAPE390_KEKL_SET: |
440 | return tape_3592_ioctl_kekl_set(device, arg); | |
441 | case TAPE390_KEKL_QUERY: | |
442 | return tape_3592_ioctl_kekl_query(device, arg); | |
443 | case TAPE390_CRYPT_SET: | |
444 | return tape_3592_ioctl_crypt_set(device, arg); | |
445 | case TAPE390_CRYPT_QUERY: | |
446 | return tape_3592_ioctl_crypt_query(device, arg); | |
b6cba4ee SB |
447 | default: |
448 | return -EINVAL; /* no additional ioctls */ | |
449 | } | |
450 | } | |
451 | ||
452 | /* | |
453 | * SENSE Medium: Get Sense data about medium state | |
454 | */ | |
455 | static int | |
456 | tape_3590_sense_medium(struct tape_device *device) | |
457 | { | |
458 | struct tape_request *request; | |
459 | ||
460 | request = tape_alloc_request(1, 128); | |
461 | if (IS_ERR(request)) | |
462 | return PTR_ERR(request); | |
463 | request->op = TO_MSEN; | |
464 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); | |
465 | return tape_do_io_free(device, request); | |
466 | } | |
467 | ||
468 | /* | |
469 | * MTTELL: Tell block. Return the number of block relative to current file. | |
470 | */ | |
471 | static int | |
472 | tape_3590_mttell(struct tape_device *device, int mt_count) | |
473 | { | |
474 | __u64 block_id; | |
475 | int rc; | |
476 | ||
477 | rc = tape_std_read_block_id(device, &block_id); | |
478 | if (rc) | |
479 | return rc; | |
480 | return block_id >> 32; | |
481 | } | |
482 | ||
483 | /* | |
484 | * MTSEEK: seek to the specified block. | |
485 | */ | |
486 | static int | |
487 | tape_3590_mtseek(struct tape_device *device, int count) | |
488 | { | |
489 | struct tape_request *request; | |
490 | ||
491 | DBF_EVENT(6, "xsee id: %x\n", count); | |
492 | request = tape_alloc_request(3, 4); | |
493 | if (IS_ERR(request)) | |
494 | return PTR_ERR(request); | |
495 | request->op = TO_LBL; | |
496 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); | |
497 | *(__u32 *) request->cpdata = count; | |
498 | tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); | |
499 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); | |
500 | return tape_do_io_free(device, request); | |
501 | } | |
502 | ||
503 | /* | |
504 | * Read Opposite Error Recovery Function: | |
505 | * Used, when Read Forward does not work | |
506 | */ | |
507 | static void | |
508 | tape_3590_read_opposite(struct tape_device *device, | |
509 | struct tape_request *request) | |
510 | { | |
511 | struct tape_3590_disc_data *data; | |
512 | ||
513 | /* | |
514 | * We have allocated 4 ccws in tape_std_read, so we can now | |
515 | * transform the request to a read backward, followed by a | |
516 | * forward space block. | |
517 | */ | |
518 | request->op = TO_RBA; | |
519 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); | |
520 | data = device->discdata; | |
521 | tape_ccw_cc_idal(request->cpaddr + 1, data->read_back_op, | |
522 | device->char_data.idal_buf); | |
523 | tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL); | |
524 | tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL); | |
525 | DBF_EVENT(6, "xrop ccwg\n"); | |
526 | } | |
527 | ||
528 | /* | |
529 | * Read Attention Msg | |
530 | * This should be done after an interrupt with attention bit (0x80) | |
531 | * in device state. | |
532 | * | |
533 | * After a "read attention message" request there are two possible | |
534 | * results: | |
535 | * | |
536 | * 1. A unit check is presented, when attention sense is present (e.g. when | |
537 | * a medium has been unloaded). The attention sense comes then | |
538 | * together with the unit check. The recovery action is either "retry" | |
539 | * (in case there is an attention message pending) or "permanent error". | |
540 | * | |
541 | * 2. The attention msg is written to the "read subsystem data" buffer. | |
542 | * In this case we probably should print it to the console. | |
543 | */ | |
544 | static int | |
545 | tape_3590_read_attmsg(struct tape_device *device) | |
546 | { | |
547 | struct tape_request *request; | |
548 | char *buf; | |
549 | ||
550 | request = tape_alloc_request(3, 4096); | |
551 | if (IS_ERR(request)) | |
552 | return PTR_ERR(request); | |
553 | request->op = TO_READ_ATTMSG; | |
554 | buf = request->cpdata; | |
555 | buf[0] = PREP_RD_SS_DATA; | |
556 | buf[6] = RD_ATTMSG; /* read att msg */ | |
557 | tape_ccw_cc(request->cpaddr, PERFORM_SS_FUNC, 12, buf); | |
558 | tape_ccw_cc(request->cpaddr + 1, READ_SS_DATA, 4096 - 12, buf + 12); | |
559 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); | |
560 | return tape_do_io_free(device, request); | |
561 | } | |
562 | ||
563 | /* | |
564 | * These functions are used to schedule follow-up actions from within an | |
565 | * interrupt context (like unsolicited interrupts). | |
566 | */ | |
2cc924b8 SB |
567 | struct work_handler_data { |
568 | struct tape_device *device; | |
569 | enum tape_op op; | |
570 | struct work_struct work; | |
571 | }; | |
572 | ||
b6cba4ee | 573 | static void |
c1637532 | 574 | tape_3590_work_handler(struct work_struct *work) |
b6cba4ee | 575 | { |
c1637532 MS |
576 | struct work_handler_data *p = |
577 | container_of(work, struct work_handler_data, work); | |
b6cba4ee SB |
578 | |
579 | switch (p->op) { | |
580 | case TO_MSEN: | |
581 | tape_3590_sense_medium(p->device); | |
582 | break; | |
583 | case TO_READ_ATTMSG: | |
584 | tape_3590_read_attmsg(p->device); | |
585 | break; | |
cced1dd4 MH |
586 | case TO_CRYPT_ON: |
587 | tape_3592_enable_crypt(p->device); | |
588 | break; | |
589 | case TO_CRYPT_OFF: | |
590 | tape_3592_disable_crypt(p->device); | |
591 | break; | |
b6cba4ee SB |
592 | default: |
593 | DBF_EVENT(3, "T3590: work handler undefined for " | |
594 | "operation 0x%02x\n", p->op); | |
595 | } | |
596 | tape_put_device(p->device); | |
597 | kfree(p); | |
598 | } | |
599 | ||
600 | static int | |
601 | tape_3590_schedule_work(struct tape_device *device, enum tape_op op) | |
602 | { | |
2cc924b8 | 603 | struct work_handler_data *p; |
b6cba4ee SB |
604 | |
605 | if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL) | |
606 | return -ENOMEM; | |
607 | ||
c1637532 | 608 | INIT_WORK(&p->work, tape_3590_work_handler); |
b6cba4ee SB |
609 | |
610 | p->device = tape_get_device_reference(device); | |
611 | p->op = op; | |
612 | ||
613 | schedule_work(&p->work); | |
614 | return 0; | |
615 | } | |
616 | ||
617 | #ifdef CONFIG_S390_TAPE_BLOCK | |
618 | /* | |
619 | * Tape Block READ | |
620 | */ | |
621 | static struct tape_request * | |
622 | tape_3590_bread(struct tape_device *device, struct request *req) | |
623 | { | |
624 | struct tape_request *request; | |
625 | struct ccw1 *ccw; | |
5705f702 | 626 | int count = 0, start_block; |
b6cba4ee SB |
627 | unsigned off; |
628 | char *dst; | |
629 | struct bio_vec *bv; | |
5705f702 | 630 | struct req_iterator iter; |
b6cba4ee SB |
631 | |
632 | DBF_EVENT(6, "xBREDid:"); | |
633 | start_block = req->sector >> TAPEBLOCK_HSEC_S2B; | |
634 | DBF_EVENT(6, "start_block = %i\n", start_block); | |
635 | ||
5705f702 N |
636 | rq_for_each_segment(bv, req, iter) |
637 | count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); | |
638 | ||
b6cba4ee SB |
639 | request = tape_alloc_request(2 + count + 1, 4); |
640 | if (IS_ERR(request)) | |
641 | return request; | |
642 | request->op = TO_BLOCK; | |
643 | *(__u32 *) request->cpdata = start_block; | |
644 | ccw = request->cpaddr; | |
645 | ccw = tape_ccw_cc(ccw, MODE_SET_DB, 1, device->modeset_byte); | |
646 | ||
647 | /* | |
648 | * We always setup a nop after the mode set ccw. This slot is | |
649 | * used in tape_std_check_locate to insert a locate ccw if the | |
650 | * current tape position doesn't match the start block to be read. | |
651 | */ | |
652 | ccw = tape_ccw_cc(ccw, NOP, 0, NULL); | |
653 | ||
5705f702 | 654 | rq_for_each_segment(bv, req, iter) { |
6c92e699 JA |
655 | dst = page_address(bv->bv_page) + bv->bv_offset; |
656 | for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { | |
657 | ccw->flags = CCW_FLAG_CC; | |
658 | ccw->cmd_code = READ_FORWARD; | |
659 | ccw->count = TAPEBLOCK_HSEC_SIZE; | |
660 | set_normalized_cda(ccw, (void *) __pa(dst)); | |
661 | ccw++; | |
662 | dst += TAPEBLOCK_HSEC_SIZE; | |
663 | } | |
664 | if (off > bv->bv_len) | |
665 | BUG(); | |
b6cba4ee SB |
666 | } |
667 | ccw = tape_ccw_end(ccw, NOP, 0, NULL); | |
668 | DBF_EVENT(6, "xBREDccwg\n"); | |
669 | return request; | |
670 | } | |
671 | ||
672 | static void | |
673 | tape_3590_free_bread(struct tape_request *request) | |
674 | { | |
675 | struct ccw1 *ccw; | |
676 | ||
677 | /* Last ccw is a nop and doesn't need clear_normalized_cda */ | |
678 | for (ccw = request->cpaddr; ccw->flags & CCW_FLAG_CC; ccw++) | |
679 | if (ccw->cmd_code == READ_FORWARD) | |
680 | clear_normalized_cda(ccw); | |
681 | tape_free_request(request); | |
682 | } | |
683 | ||
684 | /* | |
685 | * check_locate is called just before the tape request is passed to | |
686 | * the common io layer for execution. It has to check the current | |
687 | * tape position and insert a locate ccw if it doesn't match the | |
688 | * start block for the request. | |
689 | */ | |
690 | static void | |
691 | tape_3590_check_locate(struct tape_device *device, struct tape_request *request) | |
692 | { | |
693 | __u32 *start_block; | |
694 | ||
695 | start_block = (__u32 *) request->cpdata; | |
696 | if (*start_block != device->blk_data.block_position) { | |
697 | /* Add the start offset of the file to get the real block. */ | |
698 | *start_block += device->bof; | |
699 | tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); | |
700 | } | |
701 | } | |
702 | #endif | |
703 | ||
cced1dd4 MH |
704 | static void tape_3590_med_state_set(struct tape_device *device, |
705 | struct tape_3590_med_sense *sense) | |
706 | { | |
707 | struct tape390_crypt_info *c_info; | |
708 | ||
709 | c_info = &TAPE_3590_CRYPT_INFO(device); | |
710 | ||
1b9fd76e MH |
711 | DBF_EVENT(6, "medium state: %x:%x\n", sense->macst, sense->masst); |
712 | switch (sense->macst) { | |
713 | case 0x04: | |
714 | case 0x05: | |
715 | case 0x06: | |
cced1dd4 MH |
716 | tape_med_state_set(device, MS_UNLOADED); |
717 | TAPE_3590_CRYPT_INFO(device).medium_status = 0; | |
718 | return; | |
1b9fd76e MH |
719 | case 0x08: |
720 | case 0x09: | |
721 | tape_med_state_set(device, MS_LOADED); | |
722 | break; | |
723 | default: | |
724 | tape_med_state_set(device, MS_UNKNOWN); | |
cced1dd4 MH |
725 | return; |
726 | } | |
cced1dd4 MH |
727 | c_info->medium_status |= TAPE390_MEDIUM_LOADED_MASK; |
728 | if (sense->flags & MSENSE_CRYPT_MASK) { | |
729 | PRINT_INFO("Medium is encrypted (%04x)\n", sense->flags); | |
730 | c_info->medium_status |= TAPE390_MEDIUM_ENCRYPTED_MASK; | |
731 | } else { | |
732 | DBF_EVENT(6, "Medium is not encrypted %04x\n", sense->flags); | |
733 | c_info->medium_status &= ~TAPE390_MEDIUM_ENCRYPTED_MASK; | |
734 | } | |
735 | } | |
736 | ||
b6cba4ee SB |
737 | /* |
738 | * The done handler is called at device/channel end and wakes up the sleeping | |
739 | * process | |
740 | */ | |
741 | static int | |
742 | tape_3590_done(struct tape_device *device, struct tape_request *request) | |
743 | { | |
cced1dd4 | 744 | struct tape_3590_disc_data *disc_data; |
b6cba4ee SB |
745 | |
746 | DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]); | |
cced1dd4 | 747 | disc_data = device->discdata; |
b6cba4ee SB |
748 | |
749 | switch (request->op) { | |
750 | case TO_BSB: | |
751 | case TO_BSF: | |
752 | case TO_DSE: | |
753 | case TO_FSB: | |
754 | case TO_FSF: | |
755 | case TO_LBL: | |
756 | case TO_RFO: | |
757 | case TO_RBA: | |
758 | case TO_REW: | |
759 | case TO_WRI: | |
760 | case TO_WTM: | |
761 | case TO_BLOCK: | |
762 | case TO_LOAD: | |
763 | tape_med_state_set(device, MS_LOADED); | |
764 | break; | |
765 | case TO_RUN: | |
766 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 767 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
768 | break; |
769 | case TO_MSEN: | |
cced1dd4 MH |
770 | tape_3590_med_state_set(device, request->cpdata); |
771 | break; | |
772 | case TO_CRYPT_ON: | |
773 | TAPE_3590_CRYPT_INFO(device).status | |
774 | |= TAPE390_CRYPT_ON_MASK; | |
775 | *(device->modeset_byte) |= 0x03; | |
776 | break; | |
777 | case TO_CRYPT_OFF: | |
778 | TAPE_3590_CRYPT_INFO(device).status | |
779 | &= ~TAPE390_CRYPT_ON_MASK; | |
780 | *(device->modeset_byte) &= ~0x03; | |
b6cba4ee SB |
781 | break; |
782 | case TO_RBI: /* RBI seems to succeed even without medium loaded. */ | |
783 | case TO_NOP: /* Same to NOP. */ | |
784 | case TO_READ_CONFIG: | |
785 | case TO_READ_ATTMSG: | |
786 | case TO_DIS: | |
787 | case TO_ASSIGN: | |
788 | case TO_UNASSIGN: | |
b6cba4ee | 789 | case TO_SIZE: |
cced1dd4 MH |
790 | case TO_KEKL_SET: |
791 | case TO_KEKL_QUERY: | |
e2963062 | 792 | case TO_RDC: |
b6cba4ee SB |
793 | break; |
794 | } | |
795 | return TAPE_IO_SUCCESS; | |
796 | } | |
797 | ||
798 | /* | |
799 | * This fuction is called, when error recovery was successfull | |
800 | */ | |
801 | static inline int | |
802 | tape_3590_erp_succeded(struct tape_device *device, struct tape_request *request) | |
803 | { | |
804 | DBF_EVENT(3, "Error Recovery successfull for %s\n", | |
805 | tape_op_verbose[request->op]); | |
806 | return tape_3590_done(device, request); | |
807 | } | |
808 | ||
809 | /* | |
810 | * This fuction is called, when error recovery was not successfull | |
811 | */ | |
812 | static inline int | |
813 | tape_3590_erp_failed(struct tape_device *device, struct tape_request *request, | |
814 | struct irb *irb, int rc) | |
815 | { | |
816 | DBF_EVENT(3, "Error Recovery failed for %s\n", | |
817 | tape_op_verbose[request->op]); | |
818 | tape_dump_sense_dbf(device, request, irb); | |
819 | return rc; | |
820 | } | |
821 | ||
822 | /* | |
823 | * Error Recovery do retry | |
824 | */ | |
825 | static inline int | |
826 | tape_3590_erp_retry(struct tape_device *device, struct tape_request *request, | |
827 | struct irb *irb) | |
828 | { | |
829 | DBF_EVENT(2, "Retry: %s\n", tape_op_verbose[request->op]); | |
830 | tape_dump_sense_dbf(device, request, irb); | |
831 | return TAPE_IO_RETRY; | |
832 | } | |
833 | ||
834 | /* | |
835 | * Handle unsolicited interrupts | |
836 | */ | |
837 | static int | |
838 | tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb) | |
839 | { | |
840 | if (irb->scsw.dstat == DEV_STAT_CHN_END) | |
841 | /* Probably result of halt ssch */ | |
842 | return TAPE_IO_PENDING; | |
843 | else if (irb->scsw.dstat == 0x85) | |
1b9fd76e MH |
844 | /* Device Ready */ |
845 | DBF_EVENT(3, "unsol.irq! tape ready: %08x\n", device->cdev_id); | |
846 | else if (irb->scsw.dstat & DEV_STAT_ATTENTION) { | |
b6cba4ee | 847 | tape_3590_schedule_work(device, TO_READ_ATTMSG); |
1b9fd76e | 848 | } else { |
b6cba4ee SB |
849 | DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id); |
850 | PRINT_WARN("Unsolicited IRQ (Device End) caught.\n"); | |
851 | tape_dump_sense(device, NULL, irb); | |
852 | } | |
1b9fd76e MH |
853 | /* check medium state */ |
854 | tape_3590_schedule_work(device, TO_MSEN); | |
b6cba4ee SB |
855 | return TAPE_IO_SUCCESS; |
856 | } | |
857 | ||
858 | /* | |
859 | * Basic Recovery routine | |
860 | */ | |
861 | static int | |
862 | tape_3590_erp_basic(struct tape_device *device, struct tape_request *request, | |
863 | struct irb *irb, int rc) | |
864 | { | |
865 | struct tape_3590_sense *sense; | |
866 | ||
867 | sense = (struct tape_3590_sense *) irb->ecw; | |
868 | ||
869 | switch (sense->bra) { | |
870 | case SENSE_BRA_PER: | |
871 | return tape_3590_erp_failed(device, request, irb, rc); | |
872 | case SENSE_BRA_CONT: | |
873 | return tape_3590_erp_succeded(device, request); | |
874 | case SENSE_BRA_RE: | |
875 | return tape_3590_erp_retry(device, request, irb); | |
876 | case SENSE_BRA_DRE: | |
877 | return tape_3590_erp_failed(device, request, irb, rc); | |
878 | default: | |
879 | PRINT_ERR("Unknown BRA %x - This should not happen!\n", | |
880 | sense->bra); | |
881 | BUG(); | |
882 | return TAPE_IO_STOP; | |
883 | } | |
884 | } | |
885 | ||
886 | /* | |
887 | * RDL: Read Device (buffered) log | |
888 | */ | |
889 | static int | |
890 | tape_3590_erp_read_buf_log(struct tape_device *device, | |
891 | struct tape_request *request, struct irb *irb) | |
892 | { | |
893 | /* | |
894 | * We just do the basic error recovery at the moment (retry). | |
895 | * Perhaps in the future, we read the log and dump it somewhere... | |
896 | */ | |
897 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
898 | } | |
899 | ||
900 | /* | |
901 | * SWAP: Swap Devices | |
902 | */ | |
903 | static int | |
904 | tape_3590_erp_swap(struct tape_device *device, struct tape_request *request, | |
905 | struct irb *irb) | |
906 | { | |
907 | /* | |
908 | * This error recovery should swap the tapes | |
909 | * if the original has a problem. The operation | |
910 | * should proceed with the new tape... this | |
911 | * should probably be done in user space! | |
912 | */ | |
913 | PRINT_WARN("(%s): Swap Tape Device!\n", device->cdev->dev.bus_id); | |
914 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
915 | } | |
916 | ||
917 | /* | |
918 | * LBY: Long Busy | |
919 | */ | |
920 | static int | |
921 | tape_3590_erp_long_busy(struct tape_device *device, | |
922 | struct tape_request *request, struct irb *irb) | |
923 | { | |
cced1dd4 MH |
924 | DBF_EVENT(6, "Device is busy\n"); |
925 | return TAPE_IO_LONG_BUSY; | |
b6cba4ee SB |
926 | } |
927 | ||
928 | /* | |
929 | * SPI: Special Intercept | |
930 | */ | |
931 | static int | |
932 | tape_3590_erp_special_interrupt(struct tape_device *device, | |
933 | struct tape_request *request, struct irb *irb) | |
934 | { | |
935 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
936 | } | |
937 | ||
938 | /* | |
939 | * RDA: Read Alternate | |
940 | */ | |
941 | static int | |
942 | tape_3590_erp_read_alternate(struct tape_device *device, | |
943 | struct tape_request *request, struct irb *irb) | |
944 | { | |
945 | struct tape_3590_disc_data *data; | |
946 | ||
947 | /* | |
948 | * The issued Read Backward or Read Previous command is not | |
949 | * supported by the device | |
950 | * The recovery action should be to issue another command: | |
951 | * Read Revious: if Read Backward is not supported | |
952 | * Read Backward: if Read Previous is not supported | |
953 | */ | |
954 | data = device->discdata; | |
955 | if (data->read_back_op == READ_PREVIOUS) { | |
956 | DBF_EVENT(2, "(%08x): No support for READ_PREVIOUS command\n", | |
957 | device->cdev_id); | |
958 | data->read_back_op = READ_BACKWARD; | |
959 | } else { | |
960 | DBF_EVENT(2, "(%08x): No support for READ_BACKWARD command\n", | |
961 | device->cdev_id); | |
962 | data->read_back_op = READ_PREVIOUS; | |
963 | } | |
964 | tape_3590_read_opposite(device, request); | |
965 | return tape_3590_erp_retry(device, request, irb); | |
966 | } | |
967 | ||
968 | /* | |
969 | * Error Recovery read opposite | |
970 | */ | |
971 | static int | |
972 | tape_3590_erp_read_opposite(struct tape_device *device, | |
973 | struct tape_request *request, struct irb *irb) | |
974 | { | |
975 | switch (request->op) { | |
976 | case TO_RFO: | |
977 | /* | |
978 | * We did read forward, but the data could not be read. | |
979 | * We will read backward and then skip forward again. | |
980 | */ | |
981 | tape_3590_read_opposite(device, request); | |
982 | return tape_3590_erp_retry(device, request, irb); | |
983 | case TO_RBA: | |
984 | /* We tried to read forward and backward, but hat no success */ | |
985 | return tape_3590_erp_failed(device, request, irb, -EIO); | |
986 | break; | |
987 | default: | |
988 | PRINT_WARN("read_opposite_recovery_called_with_op: %s\n", | |
989 | tape_op_verbose[request->op]); | |
990 | return tape_3590_erp_failed(device, request, irb, -EIO); | |
991 | } | |
992 | } | |
993 | ||
994 | /* | |
995 | * Print an MIM (Media Information Message) (message code f0) | |
996 | */ | |
997 | static void | |
998 | tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb) | |
999 | { | |
1000 | struct tape_3590_sense *sense; | |
1001 | ||
1002 | sense = (struct tape_3590_sense *) irb->ecw; | |
1003 | /* Exception Message */ | |
1004 | switch (sense->fmt.f70.emc) { | |
1005 | case 0x02: | |
1006 | PRINT_WARN("(%s): Data degraded\n", device->cdev->dev.bus_id); | |
1007 | break; | |
1008 | case 0x03: | |
1009 | PRINT_WARN("(%s): Data degraded in partion %i\n", | |
1010 | device->cdev->dev.bus_id, sense->fmt.f70.mp); | |
1011 | break; | |
1012 | case 0x04: | |
1013 | PRINT_WARN("(%s): Medium degraded\n", device->cdev->dev.bus_id); | |
1014 | break; | |
1015 | case 0x05: | |
1016 | PRINT_WARN("(%s): Medium degraded in partition %i\n", | |
1017 | device->cdev->dev.bus_id, sense->fmt.f70.mp); | |
1018 | break; | |
1019 | case 0x06: | |
1020 | PRINT_WARN("(%s): Block 0 Error\n", device->cdev->dev.bus_id); | |
1021 | break; | |
1022 | case 0x07: | |
1023 | PRINT_WARN("(%s): Medium Exception 0x%02x\n", | |
1024 | device->cdev->dev.bus_id, sense->fmt.f70.md); | |
1025 | break; | |
1026 | default: | |
1027 | PRINT_WARN("(%s): MIM ExMsg: 0x%02x\n", | |
1028 | device->cdev->dev.bus_id, sense->fmt.f70.emc); | |
1029 | break; | |
1030 | } | |
1031 | /* Service Message */ | |
1032 | switch (sense->fmt.f70.smc) { | |
1033 | case 0x02: | |
1034 | PRINT_WARN("(%s): Reference Media maintenance procedure %i\n", | |
1035 | device->cdev->dev.bus_id, sense->fmt.f70.md); | |
1036 | break; | |
1037 | default: | |
1038 | PRINT_WARN("(%s): MIM ServiceMsg: 0x%02x\n", | |
1039 | device->cdev->dev.bus_id, sense->fmt.f70.smc); | |
1040 | break; | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * Print an I/O Subsystem Service Information Message (message code f1) | |
1046 | */ | |
1047 | static void | |
1048 | tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb) | |
1049 | { | |
1050 | struct tape_3590_sense *sense; | |
1051 | ||
1052 | sense = (struct tape_3590_sense *) irb->ecw; | |
1053 | /* Exception Message */ | |
1054 | switch (sense->fmt.f71.emc) { | |
1055 | case 0x01: | |
1056 | PRINT_WARN("(%s): Effect of failure is unknown\n", | |
1057 | device->cdev->dev.bus_id); | |
1058 | break; | |
1059 | case 0x02: | |
1060 | PRINT_WARN("(%s): CU Exception - no performance impact\n", | |
1061 | device->cdev->dev.bus_id); | |
1062 | break; | |
1063 | case 0x03: | |
1064 | PRINT_WARN("(%s): CU Exception on channel interface 0x%02x\n", | |
1065 | device->cdev->dev.bus_id, sense->fmt.f71.md[0]); | |
1066 | break; | |
1067 | case 0x04: | |
1068 | PRINT_WARN("(%s): CU Exception on device path 0x%02x\n", | |
1069 | device->cdev->dev.bus_id, sense->fmt.f71.md[0]); | |
1070 | break; | |
1071 | case 0x05: | |
1072 | PRINT_WARN("(%s): CU Exception on library path 0x%02x\n", | |
1073 | device->cdev->dev.bus_id, sense->fmt.f71.md[0]); | |
1074 | break; | |
1075 | case 0x06: | |
1076 | PRINT_WARN("(%s): CU Exception on node 0x%02x\n", | |
1077 | device->cdev->dev.bus_id, sense->fmt.f71.md[0]); | |
1078 | break; | |
1079 | case 0x07: | |
1080 | PRINT_WARN("(%s): CU Exception on partition 0x%02x\n", | |
1081 | device->cdev->dev.bus_id, sense->fmt.f71.md[0]); | |
1082 | break; | |
1083 | default: | |
1084 | PRINT_WARN("(%s): SIM ExMsg: 0x%02x\n", | |
1085 | device->cdev->dev.bus_id, sense->fmt.f71.emc); | |
1086 | } | |
1087 | /* Service Message */ | |
1088 | switch (sense->fmt.f71.smc) { | |
1089 | case 0x01: | |
1090 | PRINT_WARN("(%s): Repair impact is unknown\n", | |
1091 | device->cdev->dev.bus_id); | |
1092 | break; | |
1093 | case 0x02: | |
1094 | PRINT_WARN("(%s): Repair will not impact cu performance\n", | |
1095 | device->cdev->dev.bus_id); | |
1096 | break; | |
1097 | case 0x03: | |
1098 | if (sense->fmt.f71.mdf == 0) | |
1099 | PRINT_WARN("(%s): Repair will disable node " | |
1100 | "0x%x on CU\n", | |
1101 | device->cdev->dev.bus_id, | |
1102 | sense->fmt.f71.md[1]); | |
1103 | else | |
1104 | PRINT_WARN("(%s): Repair will disable nodes " | |
1105 | "(0x%x-0x%x) on CU\n", | |
1106 | device->cdev->dev.bus_id, | |
1107 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
1108 | break; | |
1109 | case 0x04: | |
1110 | if (sense->fmt.f71.mdf == 0) | |
1111 | PRINT_WARN("(%s): Repair will disable cannel path " | |
1112 | "0x%x on CU\n", | |
1113 | device->cdev->dev.bus_id, | |
1114 | sense->fmt.f71.md[1]); | |
1115 | else | |
1116 | PRINT_WARN("(%s): Repair will disable cannel paths " | |
1117 | "(0x%x-0x%x) on CU\n", | |
1118 | device->cdev->dev.bus_id, | |
1119 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
1120 | break; | |
1121 | case 0x05: | |
1122 | if (sense->fmt.f71.mdf == 0) | |
1123 | PRINT_WARN("(%s): Repair will disable device path " | |
1124 | "0x%x on CU\n", | |
1125 | device->cdev->dev.bus_id, | |
1126 | sense->fmt.f71.md[1]); | |
1127 | else | |
1128 | PRINT_WARN("(%s): Repair will disable device paths " | |
1129 | "(0x%x-0x%x) on CU\n", | |
1130 | device->cdev->dev.bus_id, | |
1131 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
1132 | break; | |
1133 | case 0x06: | |
1134 | if (sense->fmt.f71.mdf == 0) | |
1135 | PRINT_WARN("(%s): Repair will disable library path " | |
1136 | "0x%x on CU\n", | |
1137 | device->cdev->dev.bus_id, | |
1138 | sense->fmt.f71.md[1]); | |
1139 | else | |
1140 | PRINT_WARN("(%s): Repair will disable library paths " | |
1141 | "(0x%x-0x%x) on CU\n", | |
1142 | device->cdev->dev.bus_id, | |
1143 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
1144 | break; | |
1145 | case 0x07: | |
1146 | PRINT_WARN("(%s): Repair will disable access to CU\n", | |
1147 | device->cdev->dev.bus_id); | |
1148 | break; | |
1149 | default: | |
1150 | PRINT_WARN("(%s): SIM ServiceMsg: 0x%02x\n", | |
1151 | device->cdev->dev.bus_id, sense->fmt.f71.smc); | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | * Print an Device Subsystem Service Information Message (message code f2) | |
1157 | */ | |
1158 | static void | |
1159 | tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb) | |
1160 | { | |
1161 | struct tape_3590_sense *sense; | |
1162 | ||
1163 | sense = (struct tape_3590_sense *) irb->ecw; | |
1164 | /* Exception Message */ | |
1165 | switch (sense->fmt.f71.emc) { | |
1166 | case 0x01: | |
1167 | PRINT_WARN("(%s): Effect of failure is unknown\n", | |
1168 | device->cdev->dev.bus_id); | |
1169 | break; | |
1170 | case 0x02: | |
1171 | PRINT_WARN("(%s): DV Exception - no performance impact\n", | |
1172 | device->cdev->dev.bus_id); | |
1173 | break; | |
1174 | case 0x03: | |
1175 | PRINT_WARN("(%s): DV Exception on channel interface 0x%02x\n", | |
1176 | device->cdev->dev.bus_id, sense->fmt.f71.md[0]); | |
1177 | break; | |
1178 | case 0x04: | |
1179 | PRINT_WARN("(%s): DV Exception on loader 0x%02x\n", | |
1180 | device->cdev->dev.bus_id, sense->fmt.f71.md[0]); | |
1181 | break; | |
1182 | case 0x05: | |
1183 | PRINT_WARN("(%s): DV Exception on message display 0x%02x\n", | |
1184 | device->cdev->dev.bus_id, sense->fmt.f71.md[0]); | |
1185 | break; | |
1186 | case 0x06: | |
1187 | PRINT_WARN("(%s): DV Exception in tape path\n", | |
1188 | device->cdev->dev.bus_id); | |
1189 | break; | |
1190 | case 0x07: | |
1191 | PRINT_WARN("(%s): DV Exception in drive\n", | |
1192 | device->cdev->dev.bus_id); | |
1193 | break; | |
1194 | default: | |
1195 | PRINT_WARN("(%s): DSIM ExMsg: 0x%02x\n", | |
1196 | device->cdev->dev.bus_id, sense->fmt.f71.emc); | |
1197 | } | |
1198 | /* Service Message */ | |
1199 | switch (sense->fmt.f71.smc) { | |
1200 | case 0x01: | |
1201 | PRINT_WARN("(%s): Repair impact is unknown\n", | |
1202 | device->cdev->dev.bus_id); | |
1203 | break; | |
1204 | case 0x02: | |
1205 | PRINT_WARN("(%s): Repair will not impact device performance\n", | |
1206 | device->cdev->dev.bus_id); | |
1207 | break; | |
1208 | case 0x03: | |
1209 | if (sense->fmt.f71.mdf == 0) | |
1210 | PRINT_WARN("(%s): Repair will disable channel path " | |
1211 | "0x%x on DV\n", | |
1212 | device->cdev->dev.bus_id, | |
1213 | sense->fmt.f71.md[1]); | |
1214 | else | |
1215 | PRINT_WARN("(%s): Repair will disable channel path " | |
1216 | "(0x%x-0x%x) on DV\n", | |
1217 | device->cdev->dev.bus_id, | |
1218 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
1219 | break; | |
1220 | case 0x04: | |
1221 | if (sense->fmt.f71.mdf == 0) | |
1222 | PRINT_WARN("(%s): Repair will disable interface 0x%x " | |
1223 | "on DV\n", | |
1224 | device->cdev->dev.bus_id, | |
1225 | sense->fmt.f71.md[1]); | |
1226 | else | |
1227 | PRINT_WARN("(%s): Repair will disable interfaces " | |
1228 | "(0x%x-0x%x) on DV\n", | |
1229 | device->cdev->dev.bus_id, | |
1230 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
1231 | break; | |
1232 | case 0x05: | |
1233 | if (sense->fmt.f71.mdf == 0) | |
1234 | PRINT_WARN("(%s): Repair will disable loader 0x%x " | |
1235 | "on DV\n", | |
1236 | device->cdev->dev.bus_id, | |
1237 | sense->fmt.f71.md[1]); | |
1238 | else | |
1239 | PRINT_WARN("(%s): Repair will disable loader " | |
1240 | "(0x%x-0x%x) on DV\n", | |
1241 | device->cdev->dev.bus_id, | |
1242 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
1243 | break; | |
1244 | case 0x07: | |
1245 | PRINT_WARN("(%s): Repair will disable access to DV\n", | |
1246 | device->cdev->dev.bus_id); | |
1247 | break; | |
1248 | case 0x08: | |
1249 | if (sense->fmt.f71.mdf == 0) | |
1250 | PRINT_WARN("(%s): Repair will disable message " | |
1251 | "display 0x%x on DV\n", | |
1252 | device->cdev->dev.bus_id, | |
1253 | sense->fmt.f71.md[1]); | |
1254 | else | |
1255 | PRINT_WARN("(%s): Repair will disable message " | |
1256 | "displays (0x%x-0x%x) on DV\n", | |
1257 | device->cdev->dev.bus_id, | |
1258 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
1259 | break; | |
1260 | case 0x09: | |
1261 | PRINT_WARN("(%s): Clean DV\n", device->cdev->dev.bus_id); | |
1262 | break; | |
1263 | default: | |
1264 | PRINT_WARN("(%s): DSIM ServiceMsg: 0x%02x\n", | |
1265 | device->cdev->dev.bus_id, sense->fmt.f71.smc); | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | /* | |
1270 | * Print standard ERA Message | |
1271 | */ | |
1272 | static void | |
1273 | tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) | |
1274 | { | |
1275 | struct tape_3590_sense *sense; | |
1276 | ||
1277 | sense = (struct tape_3590_sense *) irb->ecw; | |
1278 | if (sense->mc == 0) | |
1279 | return; | |
1280 | if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) { | |
1281 | if (tape_3590_msg[sense->mc] != NULL) | |
1282 | PRINT_WARN("(%s): %s\n", device->cdev->dev.bus_id, | |
1283 | tape_3590_msg[sense->mc]); | |
1284 | else { | |
1285 | PRINT_WARN("(%s): Message Code 0x%x\n", | |
1286 | device->cdev->dev.bus_id, sense->mc); | |
1287 | } | |
1288 | return; | |
1289 | } | |
1290 | if (sense->mc == 0xf0) { | |
1291 | /* Standard Media Information Message */ | |
1292 | PRINT_WARN("(%s): MIM SEV=%i, MC=%02x, ES=%x/%x, " | |
1293 | "RC=%02x-%04x-%02x\n", device->cdev->dev.bus_id, | |
1294 | sense->fmt.f70.sev, sense->mc, | |
1295 | sense->fmt.f70.emc, sense->fmt.f70.smc, | |
1296 | sense->fmt.f70.refcode, sense->fmt.f70.mid, | |
1297 | sense->fmt.f70.fid); | |
1298 | tape_3590_print_mim_msg_f0(device, irb); | |
1299 | return; | |
1300 | } | |
1301 | if (sense->mc == 0xf1) { | |
1302 | /* Standard I/O Subsystem Service Information Message */ | |
1303 | PRINT_WARN("(%s): IOSIM SEV=%i, DEVTYPE=3590/%02x, " | |
1304 | "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", | |
1305 | device->cdev->dev.bus_id, sense->fmt.f71.sev, | |
1306 | device->cdev->id.dev_model, | |
1307 | sense->mc, sense->fmt.f71.emc, | |
1308 | sense->fmt.f71.smc, sense->fmt.f71.refcode1, | |
1309 | sense->fmt.f71.refcode2, sense->fmt.f71.refcode3); | |
1310 | tape_3590_print_io_sim_msg_f1(device, irb); | |
1311 | return; | |
1312 | } | |
1313 | if (sense->mc == 0xf2) { | |
1314 | /* Standard Device Service Information Message */ | |
1315 | PRINT_WARN("(%s): DEVSIM SEV=%i, DEVTYPE=3590/%02x, " | |
1316 | "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", | |
1317 | device->cdev->dev.bus_id, sense->fmt.f71.sev, | |
1318 | device->cdev->id.dev_model, | |
1319 | sense->mc, sense->fmt.f71.emc, | |
1320 | sense->fmt.f71.smc, sense->fmt.f71.refcode1, | |
1321 | sense->fmt.f71.refcode2, sense->fmt.f71.refcode3); | |
1322 | tape_3590_print_dev_sim_msg_f2(device, irb); | |
1323 | return; | |
1324 | } | |
1325 | if (sense->mc == 0xf3) { | |
1326 | /* Standard Library Service Information Message */ | |
1327 | return; | |
1328 | } | |
1329 | PRINT_WARN("(%s): Device Message(%x)\n", | |
1330 | device->cdev->dev.bus_id, sense->mc); | |
1331 | } | |
1332 | ||
cced1dd4 MH |
1333 | static int tape_3590_crypt_error(struct tape_device *device, |
1334 | struct tape_request *request, struct irb *irb) | |
1335 | { | |
1336 | u8 cu_rc, ekm_rc1; | |
1337 | u16 ekm_rc2; | |
1338 | u32 drv_rc; | |
1339 | char *bus_id, *sense; | |
1340 | ||
1341 | sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data; | |
1342 | bus_id = device->cdev->dev.bus_id; | |
1343 | cu_rc = sense[0]; | |
1344 | drv_rc = *((u32*) &sense[5]) & 0xffffff; | |
1345 | ekm_rc1 = sense[9]; | |
1346 | ekm_rc2 = *((u16*) &sense[10]); | |
1347 | if ((cu_rc == 0) && (ekm_rc2 == 0xee31)) | |
1348 | /* key not defined on EKM */ | |
1349 | return tape_3590_erp_basic(device, request, irb, -EKEYREJECTED); | |
1350 | if ((cu_rc == 1) || (cu_rc == 2)) | |
1351 | /* No connection to EKM */ | |
1352 | return tape_3590_erp_basic(device, request, irb, -ENOTCONN); | |
1353 | ||
1354 | PRINT_ERR("(%s): Unable to get encryption key from EKM\n", bus_id); | |
1355 | PRINT_ERR("(%s): CU=%02X DRIVE=%06X EKM=%02X:%04X\n", bus_id, cu_rc, | |
1356 | drv_rc, ekm_rc1, ekm_rc2); | |
1357 | ||
1358 | return tape_3590_erp_basic(device, request, irb, -ENOKEY); | |
1359 | } | |
1360 | ||
b6cba4ee SB |
1361 | /* |
1362 | * 3590 error Recovery routine: | |
1363 | * If possible, it tries to recover from the error. If this is not possible, | |
1364 | * inform the user about the problem. | |
1365 | */ | |
1366 | static int | |
1367 | tape_3590_unit_check(struct tape_device *device, struct tape_request *request, | |
1368 | struct irb *irb) | |
1369 | { | |
1370 | struct tape_3590_sense *sense; | |
1371 | int rc; | |
1372 | ||
1373 | #ifdef CONFIG_S390_TAPE_BLOCK | |
1374 | if (request->op == TO_BLOCK) { | |
1375 | /* | |
1376 | * Recovery for block device requests. Set the block_position | |
1377 | * to something invalid and retry. | |
1378 | */ | |
1379 | device->blk_data.block_position = -1; | |
1380 | if (request->retries-- <= 0) | |
1381 | return tape_3590_erp_failed(device, request, irb, -EIO); | |
1382 | else | |
1383 | return tape_3590_erp_retry(device, request, irb); | |
1384 | } | |
1385 | #endif | |
1386 | ||
1387 | sense = (struct tape_3590_sense *) irb->ecw; | |
1388 | ||
cced1dd4 MH |
1389 | DBF_EVENT(6, "Unit Check: RQC = %x\n", sense->rc_rqc); |
1390 | ||
b6cba4ee SB |
1391 | /* |
1392 | * First check all RC-QRCs where we want to do something special | |
1393 | * - "break": basic error recovery is done | |
1394 | * - "goto out:": just print error message if available | |
1395 | */ | |
1396 | rc = -EIO; | |
1397 | switch (sense->rc_rqc) { | |
1398 | ||
1399 | case 0x1110: | |
1400 | tape_3590_print_era_msg(device, irb); | |
1401 | return tape_3590_erp_read_buf_log(device, request, irb); | |
1402 | ||
1403 | case 0x2011: | |
1404 | tape_3590_print_era_msg(device, irb); | |
1405 | return tape_3590_erp_read_alternate(device, request, irb); | |
1406 | ||
1407 | case 0x2230: | |
1408 | case 0x2231: | |
1409 | tape_3590_print_era_msg(device, irb); | |
1410 | return tape_3590_erp_special_interrupt(device, request, irb); | |
cced1dd4 MH |
1411 | case 0x2240: |
1412 | return tape_3590_crypt_error(device, request, irb); | |
b6cba4ee SB |
1413 | |
1414 | case 0x3010: | |
1415 | DBF_EVENT(2, "(%08x): Backward at Beginning of Partition\n", | |
1416 | device->cdev_id); | |
1417 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1418 | case 0x3012: | |
1419 | DBF_EVENT(2, "(%08x): Forward at End of Partition\n", | |
1420 | device->cdev_id); | |
1421 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1422 | case 0x3020: | |
1423 | DBF_EVENT(2, "(%08x): End of Data Mark\n", device->cdev_id); | |
1424 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1425 | ||
1426 | case 0x3122: | |
1427 | DBF_EVENT(2, "(%08x): Rewind Unload initiated\n", | |
1428 | device->cdev_id); | |
1429 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1430 | case 0x3123: | |
1431 | DBF_EVENT(2, "(%08x): Rewind Unload complete\n", | |
1432 | device->cdev_id); | |
1433 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 1434 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1435 | return tape_3590_erp_basic(device, request, irb, 0); |
1436 | ||
1437 | case 0x4010: | |
1438 | /* | |
1439 | * print additional msg since default msg | |
1440 | * "device intervention" is not very meaningfull | |
1441 | */ | |
1442 | PRINT_WARN("(%s): Tape operation when medium not loaded\n", | |
1443 | device->cdev->dev.bus_id); | |
1444 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 1445 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1446 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
1447 | case 0x4012: /* Device Long Busy */ | |
cced1dd4 MH |
1448 | /* XXX: Also use long busy handling here? */ |
1449 | DBF_EVENT(6, "(%08x): LONG BUSY\n", device->cdev_id); | |
b6cba4ee | 1450 | tape_3590_print_era_msg(device, irb); |
cced1dd4 MH |
1451 | return tape_3590_erp_basic(device, request, irb, -EBUSY); |
1452 | case 0x4014: | |
1453 | DBF_EVENT(6, "(%08x): Crypto LONG BUSY\n", device->cdev_id); | |
b6cba4ee SB |
1454 | return tape_3590_erp_long_busy(device, request, irb); |
1455 | ||
1456 | case 0x5010: | |
1457 | if (sense->rac == 0xd0) { | |
1458 | /* Swap */ | |
1459 | tape_3590_print_era_msg(device, irb); | |
1460 | return tape_3590_erp_swap(device, request, irb); | |
1461 | } | |
1462 | if (sense->rac == 0x26) { | |
1463 | /* Read Opposite */ | |
1464 | tape_3590_print_era_msg(device, irb); | |
1465 | return tape_3590_erp_read_opposite(device, request, | |
1466 | irb); | |
1467 | } | |
1468 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1469 | case 0x5020: | |
1470 | case 0x5021: | |
1471 | case 0x5022: | |
1472 | case 0x5040: | |
1473 | case 0x5041: | |
1474 | case 0x5042: | |
1475 | tape_3590_print_era_msg(device, irb); | |
1476 | return tape_3590_erp_swap(device, request, irb); | |
1477 | ||
1478 | case 0x5110: | |
1479 | case 0x5111: | |
1480 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); | |
1481 | ||
1482 | case 0x5120: | |
1483 | case 0x1120: | |
1484 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 1485 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1486 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
1487 | ||
1488 | case 0x6020: | |
1489 | PRINT_WARN("(%s): Cartridge of wrong type ?\n", | |
1490 | device->cdev->dev.bus_id); | |
1491 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); | |
1492 | ||
1493 | case 0x8011: | |
1494 | PRINT_WARN("(%s): Another host has reserved the tape device\n", | |
1495 | device->cdev->dev.bus_id); | |
1496 | return tape_3590_erp_basic(device, request, irb, -EPERM); | |
1497 | case 0x8013: | |
1498 | PRINT_WARN("(%s): Another host has priviliged access to the " | |
1499 | "tape device\n", device->cdev->dev.bus_id); | |
1500 | PRINT_WARN("(%s): To solve the problem unload the current " | |
1501 | "cartridge!\n", device->cdev->dev.bus_id); | |
1502 | return tape_3590_erp_basic(device, request, irb, -EPERM); | |
1503 | default: | |
1504 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | /* | |
1509 | * 3590 interrupt handler: | |
1510 | */ | |
1511 | static int | |
1512 | tape_3590_irq(struct tape_device *device, struct tape_request *request, | |
1513 | struct irb *irb) | |
1514 | { | |
1515 | if (request == NULL) | |
1516 | return tape_3590_unsolicited_irq(device, irb); | |
1517 | ||
1518 | if ((irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) && | |
1519 | (irb->scsw.dstat & DEV_STAT_DEV_END) && (request->op == TO_WRI)) { | |
1520 | /* Write at end of volume */ | |
1521 | DBF_EVENT(2, "End of volume\n"); | |
1522 | return tape_3590_erp_failed(device, request, irb, -ENOSPC); | |
1523 | } | |
1524 | ||
1525 | if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK) | |
1526 | return tape_3590_unit_check(device, request, irb); | |
1527 | ||
1528 | if (irb->scsw.dstat & DEV_STAT_DEV_END) { | |
1529 | if (irb->scsw.dstat == DEV_STAT_UNIT_EXCEP) { | |
1530 | if (request->op == TO_FSB || request->op == TO_BSB) | |
1531 | request->rescnt++; | |
1532 | else | |
1533 | DBF_EVENT(5, "Unit Exception!\n"); | |
1534 | } | |
1535 | ||
1536 | return tape_3590_done(device, request); | |
1537 | } | |
1538 | ||
1539 | if (irb->scsw.dstat & DEV_STAT_CHN_END) { | |
1540 | DBF_EVENT(2, "cannel end\n"); | |
1541 | return TAPE_IO_PENDING; | |
1542 | } | |
1543 | ||
1544 | if (irb->scsw.dstat & DEV_STAT_ATTENTION) { | |
1545 | DBF_EVENT(2, "Unit Attention when busy..\n"); | |
1546 | return TAPE_IO_PENDING; | |
1547 | } | |
1548 | ||
1549 | DBF_EVENT(6, "xunknownirq\n"); | |
1550 | PRINT_ERR("Unexpected interrupt.\n"); | |
1551 | PRINT_ERR("Current op is: %s", tape_op_verbose[request->op]); | |
1552 | tape_dump_sense(device, request, irb); | |
1553 | return TAPE_IO_STOP; | |
1554 | } | |
1555 | ||
e2963062 MH |
1556 | |
1557 | static int tape_3590_read_dev_chars(struct tape_device *device, | |
1558 | struct tape_3590_rdc_data *rdc_data) | |
1559 | { | |
1560 | int rc; | |
1561 | struct tape_request *request; | |
1562 | ||
1563 | request = tape_alloc_request(1, sizeof(*rdc_data)); | |
1564 | if (IS_ERR(request)) | |
1565 | return PTR_ERR(request); | |
1566 | request->op = TO_RDC; | |
1567 | tape_ccw_end(request->cpaddr, CCW_CMD_RDC, sizeof(*rdc_data), | |
1568 | request->cpdata); | |
1569 | rc = tape_do_io(device, request); | |
1570 | if (rc == 0) | |
1571 | memcpy(rdc_data, request->cpdata, sizeof(*rdc_data)); | |
1572 | tape_free_request(request); | |
1573 | return rc; | |
1574 | } | |
1575 | ||
b6cba4ee SB |
1576 | /* |
1577 | * Setup device function | |
1578 | */ | |
1579 | static int | |
1580 | tape_3590_setup_device(struct tape_device *device) | |
1581 | { | |
1582 | int rc; | |
1583 | struct tape_3590_disc_data *data; | |
e2963062 | 1584 | struct tape_3590_rdc_data *rdc_data; |
b6cba4ee SB |
1585 | |
1586 | DBF_EVENT(6, "3590 device setup\n"); | |
cced1dd4 | 1587 | data = kzalloc(sizeof(struct tape_3590_disc_data), GFP_KERNEL | GFP_DMA); |
b6cba4ee SB |
1588 | if (data == NULL) |
1589 | return -ENOMEM; | |
1590 | data->read_back_op = READ_PREVIOUS; | |
1591 | device->discdata = data; | |
1592 | ||
e2963062 | 1593 | rdc_data = kmalloc(sizeof(*rdc_data), GFP_KERNEL | GFP_DMA); |
cced1dd4 MH |
1594 | if (!rdc_data) { |
1595 | rc = -ENOMEM; | |
1596 | goto fail_kmalloc; | |
1597 | } | |
e2963062 | 1598 | rc = tape_3590_read_dev_chars(device, rdc_data); |
cced1dd4 MH |
1599 | if (rc) { |
1600 | DBF_LH(3, "Read device characteristics failed!\n"); | |
1601 | goto fail_kmalloc; | |
1602 | } | |
1603 | rc = tape_std_assign(device); | |
1604 | if (rc) | |
1605 | goto fail_rdc_data; | |
e2963062 | 1606 | if (rdc_data->data[31] == 0x13) { |
cced1dd4 MH |
1607 | PRINT_INFO("Device has crypto support\n"); |
1608 | data->crypt_info.capability |= TAPE390_CRYPT_SUPPORTED_MASK; | |
1609 | tape_3592_disable_crypt(device); | |
1610 | } else { | |
1611 | DBF_EVENT(6, "Device has NO crypto support\n"); | |
b6cba4ee | 1612 | } |
cced1dd4 MH |
1613 | /* Try to find out if medium is loaded */ |
1614 | rc = tape_3590_sense_medium(device); | |
1615 | if (rc) { | |
1616 | DBF_LH(3, "3590 medium sense returned %d\n", rc); | |
1617 | goto fail_rdc_data; | |
1618 | } | |
1619 | return 0; | |
b6cba4ee | 1620 | |
cced1dd4 MH |
1621 | fail_rdc_data: |
1622 | kfree(rdc_data); | |
1623 | fail_kmalloc: | |
1624 | kfree(data); | |
b6cba4ee SB |
1625 | return rc; |
1626 | } | |
1627 | ||
1628 | /* | |
1629 | * Cleanup device function | |
1630 | */ | |
1631 | static void | |
1632 | tape_3590_cleanup_device(struct tape_device *device) | |
1633 | { | |
2cc924b8 | 1634 | flush_scheduled_work(); |
b6cba4ee SB |
1635 | tape_std_unassign(device); |
1636 | ||
1637 | kfree(device->discdata); | |
1638 | device->discdata = NULL; | |
1639 | } | |
1640 | ||
1641 | /* | |
1642 | * List of 3590 magnetic tape commands. | |
1643 | */ | |
1644 | static tape_mtop_fn tape_3590_mtop[TAPE_NR_MTOPS] = { | |
1645 | [MTRESET] = tape_std_mtreset, | |
1646 | [MTFSF] = tape_std_mtfsf, | |
1647 | [MTBSF] = tape_std_mtbsf, | |
1648 | [MTFSR] = tape_std_mtfsr, | |
1649 | [MTBSR] = tape_std_mtbsr, | |
1650 | [MTWEOF] = tape_std_mtweof, | |
1651 | [MTREW] = tape_std_mtrew, | |
1652 | [MTOFFL] = tape_std_mtoffl, | |
1653 | [MTNOP] = tape_std_mtnop, | |
1654 | [MTRETEN] = tape_std_mtreten, | |
1655 | [MTBSFM] = tape_std_mtbsfm, | |
1656 | [MTFSFM] = tape_std_mtfsfm, | |
1657 | [MTEOM] = tape_std_mteom, | |
1658 | [MTERASE] = tape_std_mterase, | |
1659 | [MTRAS1] = NULL, | |
1660 | [MTRAS2] = NULL, | |
1661 | [MTRAS3] = NULL, | |
1662 | [MTSETBLK] = tape_std_mtsetblk, | |
1663 | [MTSETDENSITY] = NULL, | |
1664 | [MTSEEK] = tape_3590_mtseek, | |
1665 | [MTTELL] = tape_3590_mttell, | |
1666 | [MTSETDRVBUFFER] = NULL, | |
1667 | [MTFSS] = NULL, | |
1668 | [MTBSS] = NULL, | |
1669 | [MTWSM] = NULL, | |
1670 | [MTLOCK] = NULL, | |
1671 | [MTUNLOCK] = NULL, | |
1672 | [MTLOAD] = tape_std_mtload, | |
1673 | [MTUNLOAD] = tape_std_mtunload, | |
1674 | [MTCOMPRESSION] = tape_std_mtcompression, | |
1675 | [MTSETPART] = NULL, | |
1676 | [MTMKPART] = NULL | |
1677 | }; | |
1678 | ||
1679 | /* | |
1680 | * Tape discipline structure for 3590. | |
1681 | */ | |
1682 | static struct tape_discipline tape_discipline_3590 = { | |
1683 | .owner = THIS_MODULE, | |
1684 | .setup_device = tape_3590_setup_device, | |
1685 | .cleanup_device = tape_3590_cleanup_device, | |
1686 | .process_eov = tape_std_process_eov, | |
1687 | .irq = tape_3590_irq, | |
1688 | .read_block = tape_std_read_block, | |
1689 | .write_block = tape_std_write_block, | |
1690 | #ifdef CONFIG_S390_TAPE_BLOCK | |
1691 | .bread = tape_3590_bread, | |
1692 | .free_bread = tape_3590_free_bread, | |
1693 | .check_locate = tape_3590_check_locate, | |
1694 | #endif | |
1695 | .ioctl_fn = tape_3590_ioctl, | |
1696 | .mtop_array = tape_3590_mtop | |
1697 | }; | |
1698 | ||
1699 | static struct ccw_device_id tape_3590_ids[] = { | |
1700 | {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590}, | |
2cc924b8 | 1701 | {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592}, |
b6cba4ee SB |
1702 | { /* end of list */ } |
1703 | }; | |
1704 | ||
1705 | static int | |
1706 | tape_3590_online(struct ccw_device *cdev) | |
1707 | { | |
1708 | return tape_generic_online(cdev->dev.driver_data, | |
1709 | &tape_discipline_3590); | |
1710 | } | |
1711 | ||
1712 | static int | |
1713 | tape_3590_offline(struct ccw_device *cdev) | |
1714 | { | |
1715 | return tape_generic_offline(cdev->dev.driver_data); | |
1716 | } | |
1717 | ||
1718 | static struct ccw_driver tape_3590_driver = { | |
1719 | .name = "tape_3590", | |
1720 | .owner = THIS_MODULE, | |
1721 | .ids = tape_3590_ids, | |
1722 | .probe = tape_generic_probe, | |
1723 | .remove = tape_generic_remove, | |
1724 | .set_offline = tape_3590_offline, | |
1725 | .set_online = tape_3590_online, | |
1726 | }; | |
1727 | ||
1728 | /* | |
1729 | * Setup discipline structure. | |
1730 | */ | |
1731 | static int | |
1732 | tape_3590_init(void) | |
1733 | { | |
1734 | int rc; | |
1735 | ||
1736 | TAPE_DBF_AREA = debug_register("tape_3590", 2, 2, 4 * sizeof(long)); | |
1737 | debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view); | |
1738 | #ifdef DBF_LIKE_HELL | |
1739 | debug_set_level(TAPE_DBF_AREA, 6); | |
1740 | #endif | |
1741 | ||
1742 | DBF_EVENT(3, "3590 init\n"); | |
1743 | /* Register driver for 3590 tapes. */ | |
1744 | rc = ccw_driver_register(&tape_3590_driver); | |
1745 | if (rc) | |
1746 | DBF_EVENT(3, "3590 init failed\n"); | |
1747 | else | |
1748 | DBF_EVENT(3, "3590 registered\n"); | |
1749 | return rc; | |
1750 | } | |
1751 | ||
1752 | static void | |
1753 | tape_3590_exit(void) | |
1754 | { | |
1755 | ccw_driver_unregister(&tape_3590_driver); | |
1756 | ||
1757 | debug_unregister(TAPE_DBF_AREA); | |
1758 | } | |
1759 | ||
1760 | MODULE_DEVICE_TABLE(ccw, tape_3590_ids); | |
1761 | MODULE_AUTHOR("(C) 2001,2006 IBM Corporation"); | |
1762 | MODULE_DESCRIPTION("Linux on zSeries channel attached 3590 tape device driver"); | |
1763 | MODULE_LICENSE("GPL"); | |
1764 | ||
1765 | module_init(tape_3590_init); | |
1766 | module_exit(tape_3590_exit); |