Commit | Line | Data |
---|---|---|
b6cba4ee SB |
1 | /* |
2 | * drivers/s390/char/tape_3590.c | |
3 | * tape device discipline for 3590 tapes. | |
4 | * | |
3ef32e62 | 5 | * Copyright IBM Corp. 2001, 2009 |
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 | ||
59e36927 | 11 | #define KMSG_COMPONENT "tape_3590" |
bb509912 | 12 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
ab640db0 | 13 | |
b6cba4ee | 14 | #include <linux/module.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
b6cba4ee SB |
16 | #include <linux/init.h> |
17 | #include <linux/bio.h> | |
cced1dd4 | 18 | #include <asm/ebcdic.h> |
b6cba4ee SB |
19 | |
20 | #define TAPE_DBF_AREA tape_3590_dbf | |
ab640db0 | 21 | #define BUFSIZE 512 /* size of buffers for dynamic generated messages */ |
b6cba4ee SB |
22 | |
23 | #include "tape.h" | |
24 | #include "tape_std.h" | |
25 | #include "tape_3590.h" | |
26 | ||
6dca467a TH |
27 | static struct workqueue_struct *tape_3590_wq; |
28 | ||
b6cba4ee SB |
29 | /* |
30 | * Pointer to debug area. | |
31 | */ | |
32 | debug_info_t *TAPE_DBF_AREA = NULL; | |
33 | EXPORT_SYMBOL(TAPE_DBF_AREA); | |
34 | ||
35 | /******************************************************************* | |
eef35c2d | 36 | * Error Recovery functions: |
b6cba4ee SB |
37 | * - Read Opposite: implemented |
38 | * - Read Device (buffered) log: BRA | |
39 | * - Read Library log: BRA | |
40 | * - Swap Devices: BRA | |
cced1dd4 | 41 | * - Long Busy: implemented |
b6cba4ee SB |
42 | * - Special Intercept: BRA |
43 | * - Read Alternate: implemented | |
44 | *******************************************************************/ | |
45 | ||
b6cba4ee SB |
46 | static const char *tape_3590_msg[TAPE_3590_MAX_MSG] = { |
47 | [0x00] = "", | |
48 | [0x10] = "Lost Sense", | |
49 | [0x11] = "Assigned Elsewhere", | |
50 | [0x12] = "Allegiance Reset", | |
51 | [0x13] = "Shared Access Violation", | |
52 | [0x20] = "Command Reject", | |
53 | [0x21] = "Configuration Error", | |
54 | [0x22] = "Protection Exception", | |
55 | [0x23] = "Write Protect", | |
56 | [0x24] = "Write Length", | |
57 | [0x25] = "Read-Only Format", | |
58 | [0x31] = "Beginning of Partition", | |
59 | [0x33] = "End of Partition", | |
60 | [0x34] = "End of Data", | |
61 | [0x35] = "Block not found", | |
62 | [0x40] = "Device Intervention", | |
63 | [0x41] = "Loader Intervention", | |
64 | [0x42] = "Library Intervention", | |
65 | [0x50] = "Write Error", | |
66 | [0x51] = "Erase Error", | |
67 | [0x52] = "Formatting Error", | |
68 | [0x53] = "Read Error", | |
69 | [0x54] = "Unsupported Format", | |
70 | [0x55] = "No Formatting", | |
71 | [0x56] = "Positioning lost", | |
72 | [0x57] = "Read Length", | |
73 | [0x60] = "Unsupported Medium", | |
74 | [0x61] = "Medium Length Error", | |
75 | [0x62] = "Medium removed", | |
76 | [0x64] = "Load Check", | |
77 | [0x65] = "Unload Check", | |
78 | [0x70] = "Equipment Check", | |
79 | [0x71] = "Bus out Check", | |
80 | [0x72] = "Protocol Error", | |
81 | [0x73] = "Interface Error", | |
82 | [0x74] = "Overrun", | |
83 | [0x75] = "Halt Signal", | |
84 | [0x90] = "Device fenced", | |
85 | [0x91] = "Device Path fenced", | |
86 | [0xa0] = "Volume misplaced", | |
87 | [0xa1] = "Volume inaccessible", | |
88 | [0xa2] = "Volume in input", | |
89 | [0xa3] = "Volume ejected", | |
90 | [0xa4] = "All categories reserved", | |
91 | [0xa5] = "Duplicate Volume", | |
92 | [0xa6] = "Library Manager Offline", | |
93 | [0xa7] = "Library Output Station full", | |
94 | [0xa8] = "Vision System non-operational", | |
95 | [0xa9] = "Library Manager Equipment Check", | |
96 | [0xaa] = "Library Equipment Check", | |
97 | [0xab] = "All Library Cells full", | |
98 | [0xac] = "No Cleaner Volumes in Library", | |
99 | [0xad] = "I/O Station door open", | |
100 | [0xae] = "Subsystem environmental alert", | |
101 | }; | |
102 | ||
cced1dd4 MH |
103 | static int crypt_supported(struct tape_device *device) |
104 | { | |
105 | return TAPE390_CRYPT_SUPPORTED(TAPE_3590_CRYPT_INFO(device)); | |
106 | } | |
107 | ||
108 | static int crypt_enabled(struct tape_device *device) | |
109 | { | |
110 | return TAPE390_CRYPT_ON(TAPE_3590_CRYPT_INFO(device)); | |
111 | } | |
112 | ||
113 | static void ext_to_int_kekl(struct tape390_kekl *in, | |
114 | struct tape3592_kekl *out) | |
115 | { | |
116 | int i; | |
117 | ||
118 | memset(out, 0, sizeof(*out)); | |
119 | if (in->type == TAPE390_KEKL_TYPE_HASH) | |
120 | out->flags |= 0x40; | |
121 | if (in->type_on_tape == TAPE390_KEKL_TYPE_HASH) | |
122 | out->flags |= 0x80; | |
123 | strncpy(out->label, in->label, 64); | |
124 | for (i = strlen(in->label); i < sizeof(out->label); i++) | |
125 | out->label[i] = ' '; | |
126 | ASCEBC(out->label, sizeof(out->label)); | |
127 | } | |
128 | ||
129 | static void int_to_ext_kekl(struct tape3592_kekl *in, | |
130 | struct tape390_kekl *out) | |
131 | { | |
132 | memset(out, 0, sizeof(*out)); | |
133 | if(in->flags & 0x40) | |
134 | out->type = TAPE390_KEKL_TYPE_HASH; | |
135 | else | |
136 | out->type = TAPE390_KEKL_TYPE_LABEL; | |
137 | if(in->flags & 0x80) | |
138 | out->type_on_tape = TAPE390_KEKL_TYPE_HASH; | |
139 | else | |
140 | out->type_on_tape = TAPE390_KEKL_TYPE_LABEL; | |
141 | memcpy(out->label, in->label, sizeof(in->label)); | |
142 | EBCASC(out->label, sizeof(in->label)); | |
1d802e24 | 143 | strim(out->label); |
cced1dd4 MH |
144 | } |
145 | ||
146 | static void int_to_ext_kekl_pair(struct tape3592_kekl_pair *in, | |
147 | struct tape390_kekl_pair *out) | |
148 | { | |
149 | if (in->count == 0) { | |
150 | out->kekl[0].type = TAPE390_KEKL_TYPE_NONE; | |
151 | out->kekl[0].type_on_tape = TAPE390_KEKL_TYPE_NONE; | |
152 | out->kekl[1].type = TAPE390_KEKL_TYPE_NONE; | |
153 | out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE; | |
154 | } else if (in->count == 1) { | |
155 | int_to_ext_kekl(&in->kekl[0], &out->kekl[0]); | |
156 | out->kekl[1].type = TAPE390_KEKL_TYPE_NONE; | |
157 | out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE; | |
158 | } else if (in->count == 2) { | |
159 | int_to_ext_kekl(&in->kekl[0], &out->kekl[0]); | |
160 | int_to_ext_kekl(&in->kekl[1], &out->kekl[1]); | |
161 | } else { | |
162 | printk("Invalid KEKL number: %d\n", in->count); | |
163 | BUG(); | |
164 | } | |
165 | } | |
166 | ||
167 | static int check_ext_kekl(struct tape390_kekl *kekl) | |
168 | { | |
169 | if (kekl->type == TAPE390_KEKL_TYPE_NONE) | |
170 | goto invalid; | |
171 | if (kekl->type > TAPE390_KEKL_TYPE_HASH) | |
172 | goto invalid; | |
173 | if (kekl->type_on_tape == TAPE390_KEKL_TYPE_NONE) | |
174 | goto invalid; | |
175 | if (kekl->type_on_tape > TAPE390_KEKL_TYPE_HASH) | |
176 | goto invalid; | |
177 | if ((kekl->type == TAPE390_KEKL_TYPE_HASH) && | |
178 | (kekl->type_on_tape == TAPE390_KEKL_TYPE_LABEL)) | |
179 | goto invalid; | |
180 | ||
181 | return 0; | |
182 | invalid: | |
183 | return -EINVAL; | |
184 | } | |
185 | ||
186 | static int check_ext_kekl_pair(struct tape390_kekl_pair *kekls) | |
187 | { | |
188 | if (check_ext_kekl(&kekls->kekl[0])) | |
189 | goto invalid; | |
190 | if (check_ext_kekl(&kekls->kekl[1])) | |
191 | goto invalid; | |
192 | ||
193 | return 0; | |
194 | invalid: | |
195 | return -EINVAL; | |
196 | } | |
197 | ||
198 | /* | |
199 | * Query KEKLs | |
200 | */ | |
201 | static int tape_3592_kekl_query(struct tape_device *device, | |
202 | struct tape390_kekl_pair *ext_kekls) | |
203 | { | |
204 | struct tape_request *request; | |
205 | struct tape3592_kekl_query_order *order; | |
206 | struct tape3592_kekl_query_data *int_kekls; | |
207 | int rc; | |
208 | ||
209 | DBF_EVENT(6, "tape3592_kekl_query\n"); | |
210 | int_kekls = kmalloc(sizeof(*int_kekls), GFP_KERNEL|GFP_DMA); | |
211 | if (!int_kekls) | |
212 | return -ENOMEM; | |
213 | request = tape_alloc_request(2, sizeof(*order)); | |
214 | if (IS_ERR(request)) { | |
215 | rc = PTR_ERR(request); | |
216 | goto fail_malloc; | |
217 | } | |
218 | order = request->cpdata; | |
219 | memset(order,0,sizeof(*order)); | |
220 | order->code = 0xe2; | |
221 | order->max_count = 2; | |
222 | request->op = TO_KEKL_QUERY; | |
223 | tape_ccw_cc(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order); | |
224 | tape_ccw_end(request->cpaddr + 1, READ_SS_DATA, sizeof(*int_kekls), | |
225 | int_kekls); | |
226 | rc = tape_do_io(device, request); | |
227 | if (rc) | |
228 | goto fail_request; | |
229 | int_to_ext_kekl_pair(&int_kekls->kekls, ext_kekls); | |
230 | ||
231 | rc = 0; | |
232 | fail_request: | |
233 | tape_free_request(request); | |
234 | fail_malloc: | |
235 | kfree(int_kekls); | |
236 | return rc; | |
237 | } | |
238 | ||
239 | /* | |
240 | * IOCTL: Query KEKLs | |
241 | */ | |
242 | static int tape_3592_ioctl_kekl_query(struct tape_device *device, | |
243 | unsigned long arg) | |
244 | { | |
245 | int rc; | |
246 | struct tape390_kekl_pair *ext_kekls; | |
247 | ||
248 | DBF_EVENT(6, "tape_3592_ioctl_kekl_query\n"); | |
249 | if (!crypt_supported(device)) | |
250 | return -ENOSYS; | |
251 | if (!crypt_enabled(device)) | |
252 | return -EUNATCH; | |
253 | ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL); | |
254 | if (!ext_kekls) | |
255 | return -ENOMEM; | |
256 | rc = tape_3592_kekl_query(device, ext_kekls); | |
257 | if (rc != 0) | |
258 | goto fail; | |
259 | if (copy_to_user((char __user *) arg, ext_kekls, sizeof(*ext_kekls))) { | |
260 | rc = -EFAULT; | |
261 | goto fail; | |
262 | } | |
263 | rc = 0; | |
264 | fail: | |
265 | kfree(ext_kekls); | |
266 | return rc; | |
267 | } | |
268 | ||
269 | static int tape_3590_mttell(struct tape_device *device, int mt_count); | |
270 | ||
271 | /* | |
272 | * Set KEKLs | |
273 | */ | |
274 | static int tape_3592_kekl_set(struct tape_device *device, | |
275 | struct tape390_kekl_pair *ext_kekls) | |
276 | { | |
277 | struct tape_request *request; | |
278 | struct tape3592_kekl_set_order *order; | |
279 | ||
280 | DBF_EVENT(6, "tape3592_kekl_set\n"); | |
281 | if (check_ext_kekl_pair(ext_kekls)) { | |
282 | DBF_EVENT(6, "invalid kekls\n"); | |
283 | return -EINVAL; | |
284 | } | |
285 | if (tape_3590_mttell(device, 0) != 0) | |
286 | return -EBADSLT; | |
287 | request = tape_alloc_request(1, sizeof(*order)); | |
288 | if (IS_ERR(request)) | |
289 | return PTR_ERR(request); | |
290 | order = request->cpdata; | |
291 | memset(order, 0, sizeof(*order)); | |
292 | order->code = 0xe3; | |
293 | order->kekls.count = 2; | |
294 | ext_to_int_kekl(&ext_kekls->kekl[0], &order->kekls.kekl[0]); | |
295 | ext_to_int_kekl(&ext_kekls->kekl[1], &order->kekls.kekl[1]); | |
296 | request->op = TO_KEKL_SET; | |
297 | tape_ccw_end(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order); | |
298 | ||
299 | return tape_do_io_free(device, request); | |
300 | } | |
301 | ||
302 | /* | |
303 | * IOCTL: Set KEKLs | |
304 | */ | |
305 | static int tape_3592_ioctl_kekl_set(struct tape_device *device, | |
306 | unsigned long arg) | |
307 | { | |
308 | int rc; | |
309 | struct tape390_kekl_pair *ext_kekls; | |
310 | ||
311 | DBF_EVENT(6, "tape_3592_ioctl_kekl_set\n"); | |
312 | if (!crypt_supported(device)) | |
313 | return -ENOSYS; | |
314 | if (!crypt_enabled(device)) | |
315 | return -EUNATCH; | |
316 | ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL); | |
317 | if (!ext_kekls) | |
318 | return -ENOMEM; | |
319 | if (copy_from_user(ext_kekls, (char __user *)arg, sizeof(*ext_kekls))) { | |
320 | rc = -EFAULT; | |
321 | goto out; | |
322 | } | |
323 | rc = tape_3592_kekl_set(device, ext_kekls); | |
324 | out: | |
325 | kfree(ext_kekls); | |
326 | return rc; | |
327 | } | |
328 | ||
329 | /* | |
330 | * Enable encryption | |
331 | */ | |
0c2bd9b2 | 332 | static struct tape_request *__tape_3592_enable_crypt(struct tape_device *device) |
cced1dd4 MH |
333 | { |
334 | struct tape_request *request; | |
335 | char *data; | |
336 | ||
337 | DBF_EVENT(6, "tape_3592_enable_crypt\n"); | |
338 | if (!crypt_supported(device)) | |
0c2bd9b2 | 339 | return ERR_PTR(-ENOSYS); |
cced1dd4 MH |
340 | request = tape_alloc_request(2, 72); |
341 | if (IS_ERR(request)) | |
0c2bd9b2 | 342 | return request; |
cced1dd4 MH |
343 | data = request->cpdata; |
344 | memset(data,0,72); | |
345 | ||
346 | data[0] = 0x05; | |
347 | data[36 + 0] = 0x03; | |
348 | data[36 + 1] = 0x03; | |
349 | data[36 + 4] = 0x40; | |
350 | data[36 + 6] = 0x01; | |
351 | data[36 + 14] = 0x2f; | |
352 | data[36 + 18] = 0xc3; | |
353 | data[36 + 35] = 0x72; | |
354 | request->op = TO_CRYPT_ON; | |
355 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); | |
356 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); | |
0c2bd9b2 MS |
357 | return request; |
358 | } | |
359 | ||
360 | static int tape_3592_enable_crypt(struct tape_device *device) | |
361 | { | |
362 | struct tape_request *request; | |
363 | ||
364 | request = __tape_3592_enable_crypt(device); | |
365 | if (IS_ERR(request)) | |
366 | return PTR_ERR(request); | |
cced1dd4 MH |
367 | return tape_do_io_free(device, request); |
368 | } | |
369 | ||
0c2bd9b2 MS |
370 | static void tape_3592_enable_crypt_async(struct tape_device *device) |
371 | { | |
372 | struct tape_request *request; | |
373 | ||
374 | request = __tape_3592_enable_crypt(device); | |
375 | if (!IS_ERR(request)) | |
376 | tape_do_io_async_free(device, request); | |
377 | } | |
378 | ||
cced1dd4 MH |
379 | /* |
380 | * Disable encryption | |
381 | */ | |
0c2bd9b2 | 382 | static struct tape_request *__tape_3592_disable_crypt(struct tape_device *device) |
cced1dd4 MH |
383 | { |
384 | struct tape_request *request; | |
385 | char *data; | |
386 | ||
387 | DBF_EVENT(6, "tape_3592_disable_crypt\n"); | |
388 | if (!crypt_supported(device)) | |
0c2bd9b2 | 389 | return ERR_PTR(-ENOSYS); |
cced1dd4 MH |
390 | request = tape_alloc_request(2, 72); |
391 | if (IS_ERR(request)) | |
0c2bd9b2 | 392 | return request; |
cced1dd4 MH |
393 | data = request->cpdata; |
394 | memset(data,0,72); | |
395 | ||
396 | data[0] = 0x05; | |
397 | data[36 + 0] = 0x03; | |
398 | data[36 + 1] = 0x03; | |
399 | data[36 + 35] = 0x32; | |
400 | ||
401 | request->op = TO_CRYPT_OFF; | |
402 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); | |
403 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); | |
404 | ||
0c2bd9b2 MS |
405 | return request; |
406 | } | |
407 | ||
408 | static int tape_3592_disable_crypt(struct tape_device *device) | |
409 | { | |
410 | struct tape_request *request; | |
411 | ||
412 | request = __tape_3592_disable_crypt(device); | |
413 | if (IS_ERR(request)) | |
414 | return PTR_ERR(request); | |
cced1dd4 MH |
415 | return tape_do_io_free(device, request); |
416 | } | |
417 | ||
0c2bd9b2 MS |
418 | static void tape_3592_disable_crypt_async(struct tape_device *device) |
419 | { | |
420 | struct tape_request *request; | |
421 | ||
422 | request = __tape_3592_disable_crypt(device); | |
423 | if (!IS_ERR(request)) | |
424 | tape_do_io_async_free(device, request); | |
425 | } | |
426 | ||
cced1dd4 MH |
427 | /* |
428 | * IOCTL: Set encryption status | |
429 | */ | |
430 | static int tape_3592_ioctl_crypt_set(struct tape_device *device, | |
431 | unsigned long arg) | |
432 | { | |
433 | struct tape390_crypt_info info; | |
434 | ||
435 | DBF_EVENT(6, "tape_3592_ioctl_crypt_set\n"); | |
436 | if (!crypt_supported(device)) | |
437 | return -ENOSYS; | |
438 | if (copy_from_user(&info, (char __user *)arg, sizeof(info))) | |
439 | return -EFAULT; | |
440 | if (info.status & ~TAPE390_CRYPT_ON_MASK) | |
441 | return -EINVAL; | |
442 | if (info.status & TAPE390_CRYPT_ON_MASK) | |
443 | return tape_3592_enable_crypt(device); | |
444 | else | |
445 | return tape_3592_disable_crypt(device); | |
446 | } | |
447 | ||
448 | static int tape_3590_sense_medium(struct tape_device *device); | |
449 | ||
450 | /* | |
451 | * IOCTL: Query enryption status | |
452 | */ | |
453 | static int tape_3592_ioctl_crypt_query(struct tape_device *device, | |
454 | unsigned long arg) | |
455 | { | |
456 | DBF_EVENT(6, "tape_3592_ioctl_crypt_query\n"); | |
457 | if (!crypt_supported(device)) | |
458 | return -ENOSYS; | |
459 | tape_3590_sense_medium(device); | |
460 | if (copy_to_user((char __user *) arg, &TAPE_3590_CRYPT_INFO(device), | |
461 | sizeof(TAPE_3590_CRYPT_INFO(device)))) | |
462 | return -EFAULT; | |
463 | else | |
464 | return 0; | |
465 | } | |
466 | ||
b6cba4ee SB |
467 | /* |
468 | * 3590 IOCTL Overload | |
469 | */ | |
470 | static int | |
471 | tape_3590_ioctl(struct tape_device *device, unsigned int cmd, unsigned long arg) | |
472 | { | |
473 | switch (cmd) { | |
474 | case TAPE390_DISPLAY: { | |
475 | struct display_struct disp; | |
476 | ||
477 | if (copy_from_user(&disp, (char __user *) arg, sizeof(disp))) | |
478 | return -EFAULT; | |
479 | ||
480 | return tape_std_display(device, &disp); | |
481 | } | |
cced1dd4 MH |
482 | case TAPE390_KEKL_SET: |
483 | return tape_3592_ioctl_kekl_set(device, arg); | |
484 | case TAPE390_KEKL_QUERY: | |
485 | return tape_3592_ioctl_kekl_query(device, arg); | |
486 | case TAPE390_CRYPT_SET: | |
487 | return tape_3592_ioctl_crypt_set(device, arg); | |
488 | case TAPE390_CRYPT_QUERY: | |
489 | return tape_3592_ioctl_crypt_query(device, arg); | |
b6cba4ee SB |
490 | default: |
491 | return -EINVAL; /* no additional ioctls */ | |
492 | } | |
493 | } | |
494 | ||
495 | /* | |
496 | * SENSE Medium: Get Sense data about medium state | |
497 | */ | |
0c2bd9b2 | 498 | static int tape_3590_sense_medium(struct tape_device *device) |
b6cba4ee SB |
499 | { |
500 | struct tape_request *request; | |
501 | ||
502 | request = tape_alloc_request(1, 128); | |
503 | if (IS_ERR(request)) | |
504 | return PTR_ERR(request); | |
505 | request->op = TO_MSEN; | |
506 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); | |
507 | return tape_do_io_free(device, request); | |
508 | } | |
509 | ||
0c2bd9b2 MS |
510 | static void tape_3590_sense_medium_async(struct tape_device *device) |
511 | { | |
512 | struct tape_request *request; | |
513 | ||
514 | request = tape_alloc_request(1, 128); | |
515 | if (IS_ERR(request)) | |
516 | return; | |
517 | request->op = TO_MSEN; | |
518 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); | |
519 | tape_do_io_async_free(device, request); | |
520 | } | |
521 | ||
b6cba4ee SB |
522 | /* |
523 | * MTTELL: Tell block. Return the number of block relative to current file. | |
524 | */ | |
525 | static int | |
526 | tape_3590_mttell(struct tape_device *device, int mt_count) | |
527 | { | |
528 | __u64 block_id; | |
529 | int rc; | |
530 | ||
531 | rc = tape_std_read_block_id(device, &block_id); | |
532 | if (rc) | |
533 | return rc; | |
534 | return block_id >> 32; | |
535 | } | |
536 | ||
537 | /* | |
538 | * MTSEEK: seek to the specified block. | |
539 | */ | |
540 | static int | |
541 | tape_3590_mtseek(struct tape_device *device, int count) | |
542 | { | |
543 | struct tape_request *request; | |
544 | ||
545 | DBF_EVENT(6, "xsee id: %x\n", count); | |
546 | request = tape_alloc_request(3, 4); | |
547 | if (IS_ERR(request)) | |
548 | return PTR_ERR(request); | |
549 | request->op = TO_LBL; | |
550 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); | |
551 | *(__u32 *) request->cpdata = count; | |
552 | tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); | |
553 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); | |
554 | return tape_do_io_free(device, request); | |
555 | } | |
556 | ||
557 | /* | |
558 | * Read Opposite Error Recovery Function: | |
559 | * Used, when Read Forward does not work | |
560 | */ | |
561 | static void | |
562 | tape_3590_read_opposite(struct tape_device *device, | |
563 | struct tape_request *request) | |
564 | { | |
565 | struct tape_3590_disc_data *data; | |
566 | ||
567 | /* | |
568 | * We have allocated 4 ccws in tape_std_read, so we can now | |
569 | * transform the request to a read backward, followed by a | |
570 | * forward space block. | |
571 | */ | |
572 | request->op = TO_RBA; | |
573 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); | |
574 | data = device->discdata; | |
575 | tape_ccw_cc_idal(request->cpaddr + 1, data->read_back_op, | |
576 | device->char_data.idal_buf); | |
577 | tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL); | |
578 | tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL); | |
579 | DBF_EVENT(6, "xrop ccwg\n"); | |
580 | } | |
581 | ||
582 | /* | |
583 | * Read Attention Msg | |
584 | * This should be done after an interrupt with attention bit (0x80) | |
585 | * in device state. | |
586 | * | |
587 | * After a "read attention message" request there are two possible | |
588 | * results: | |
589 | * | |
590 | * 1. A unit check is presented, when attention sense is present (e.g. when | |
591 | * a medium has been unloaded). The attention sense comes then | |
592 | * together with the unit check. The recovery action is either "retry" | |
593 | * (in case there is an attention message pending) or "permanent error". | |
594 | * | |
595 | * 2. The attention msg is written to the "read subsystem data" buffer. | |
596 | * In this case we probably should print it to the console. | |
597 | */ | |
0c2bd9b2 | 598 | static void tape_3590_read_attmsg_async(struct tape_device *device) |
b6cba4ee SB |
599 | { |
600 | struct tape_request *request; | |
601 | char *buf; | |
602 | ||
603 | request = tape_alloc_request(3, 4096); | |
604 | if (IS_ERR(request)) | |
0c2bd9b2 | 605 | return; |
b6cba4ee SB |
606 | request->op = TO_READ_ATTMSG; |
607 | buf = request->cpdata; | |
608 | buf[0] = PREP_RD_SS_DATA; | |
609 | buf[6] = RD_ATTMSG; /* read att msg */ | |
610 | tape_ccw_cc(request->cpaddr, PERFORM_SS_FUNC, 12, buf); | |
611 | tape_ccw_cc(request->cpaddr + 1, READ_SS_DATA, 4096 - 12, buf + 12); | |
612 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); | |
0c2bd9b2 | 613 | tape_do_io_async_free(device, request); |
b6cba4ee SB |
614 | } |
615 | ||
616 | /* | |
617 | * These functions are used to schedule follow-up actions from within an | |
618 | * interrupt context (like unsolicited interrupts). | |
0c2bd9b2 MS |
619 | * Note: the work handler is called by the system work queue. The tape |
620 | * commands started by the handler need to be asynchrounous, otherwise | |
621 | * a deadlock can occur e.g. in case of a deferred cc=1 (see __tape_do_irq). | |
b6cba4ee | 622 | */ |
2cc924b8 SB |
623 | struct work_handler_data { |
624 | struct tape_device *device; | |
625 | enum tape_op op; | |
626 | struct work_struct work; | |
627 | }; | |
628 | ||
b6cba4ee | 629 | static void |
c1637532 | 630 | tape_3590_work_handler(struct work_struct *work) |
b6cba4ee | 631 | { |
c1637532 MS |
632 | struct work_handler_data *p = |
633 | container_of(work, struct work_handler_data, work); | |
b6cba4ee SB |
634 | |
635 | switch (p->op) { | |
636 | case TO_MSEN: | |
0c2bd9b2 | 637 | tape_3590_sense_medium_async(p->device); |
b6cba4ee SB |
638 | break; |
639 | case TO_READ_ATTMSG: | |
0c2bd9b2 | 640 | tape_3590_read_attmsg_async(p->device); |
b6cba4ee | 641 | break; |
cced1dd4 | 642 | case TO_CRYPT_ON: |
0c2bd9b2 | 643 | tape_3592_enable_crypt_async(p->device); |
cced1dd4 MH |
644 | break; |
645 | case TO_CRYPT_OFF: | |
0c2bd9b2 | 646 | tape_3592_disable_crypt_async(p->device); |
cced1dd4 | 647 | break; |
b6cba4ee SB |
648 | default: |
649 | DBF_EVENT(3, "T3590: work handler undefined for " | |
650 | "operation 0x%02x\n", p->op); | |
651 | } | |
652 | tape_put_device(p->device); | |
653 | kfree(p); | |
654 | } | |
655 | ||
656 | static int | |
657 | tape_3590_schedule_work(struct tape_device *device, enum tape_op op) | |
658 | { | |
2cc924b8 | 659 | struct work_handler_data *p; |
b6cba4ee SB |
660 | |
661 | if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL) | |
662 | return -ENOMEM; | |
663 | ||
c1637532 | 664 | INIT_WORK(&p->work, tape_3590_work_handler); |
b6cba4ee | 665 | |
8fd138c3 | 666 | p->device = tape_get_device(device); |
b6cba4ee SB |
667 | p->op = op; |
668 | ||
6dca467a | 669 | queue_work(tape_3590_wq, &p->work); |
b6cba4ee SB |
670 | return 0; |
671 | } | |
672 | ||
673 | #ifdef CONFIG_S390_TAPE_BLOCK | |
674 | /* | |
675 | * Tape Block READ | |
676 | */ | |
677 | static struct tape_request * | |
678 | tape_3590_bread(struct tape_device *device, struct request *req) | |
679 | { | |
680 | struct tape_request *request; | |
681 | struct ccw1 *ccw; | |
5705f702 | 682 | int count = 0, start_block; |
b6cba4ee SB |
683 | unsigned off; |
684 | char *dst; | |
685 | struct bio_vec *bv; | |
5705f702 | 686 | struct req_iterator iter; |
b6cba4ee SB |
687 | |
688 | DBF_EVENT(6, "xBREDid:"); | |
83096ebf | 689 | start_block = blk_rq_pos(req) >> TAPEBLOCK_HSEC_S2B; |
b6cba4ee SB |
690 | DBF_EVENT(6, "start_block = %i\n", start_block); |
691 | ||
5705f702 N |
692 | rq_for_each_segment(bv, req, iter) |
693 | count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9); | |
694 | ||
b6cba4ee SB |
695 | request = tape_alloc_request(2 + count + 1, 4); |
696 | if (IS_ERR(request)) | |
697 | return request; | |
698 | request->op = TO_BLOCK; | |
699 | *(__u32 *) request->cpdata = start_block; | |
700 | ccw = request->cpaddr; | |
701 | ccw = tape_ccw_cc(ccw, MODE_SET_DB, 1, device->modeset_byte); | |
702 | ||
703 | /* | |
704 | * We always setup a nop after the mode set ccw. This slot is | |
705 | * used in tape_std_check_locate to insert a locate ccw if the | |
706 | * current tape position doesn't match the start block to be read. | |
707 | */ | |
708 | ccw = tape_ccw_cc(ccw, NOP, 0, NULL); | |
709 | ||
5705f702 | 710 | rq_for_each_segment(bv, req, iter) { |
6c92e699 JA |
711 | dst = page_address(bv->bv_page) + bv->bv_offset; |
712 | for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) { | |
713 | ccw->flags = CCW_FLAG_CC; | |
714 | ccw->cmd_code = READ_FORWARD; | |
715 | ccw->count = TAPEBLOCK_HSEC_SIZE; | |
716 | set_normalized_cda(ccw, (void *) __pa(dst)); | |
717 | ccw++; | |
718 | dst += TAPEBLOCK_HSEC_SIZE; | |
719 | } | |
6aa0d3a9 | 720 | BUG_ON(off > bv->bv_len); |
b6cba4ee SB |
721 | } |
722 | ccw = tape_ccw_end(ccw, NOP, 0, NULL); | |
723 | DBF_EVENT(6, "xBREDccwg\n"); | |
724 | return request; | |
725 | } | |
726 | ||
727 | static void | |
728 | tape_3590_free_bread(struct tape_request *request) | |
729 | { | |
730 | struct ccw1 *ccw; | |
731 | ||
732 | /* Last ccw is a nop and doesn't need clear_normalized_cda */ | |
733 | for (ccw = request->cpaddr; ccw->flags & CCW_FLAG_CC; ccw++) | |
734 | if (ccw->cmd_code == READ_FORWARD) | |
735 | clear_normalized_cda(ccw); | |
736 | tape_free_request(request); | |
737 | } | |
738 | ||
739 | /* | |
740 | * check_locate is called just before the tape request is passed to | |
741 | * the common io layer for execution. It has to check the current | |
742 | * tape position and insert a locate ccw if it doesn't match the | |
743 | * start block for the request. | |
744 | */ | |
745 | static void | |
746 | tape_3590_check_locate(struct tape_device *device, struct tape_request *request) | |
747 | { | |
748 | __u32 *start_block; | |
749 | ||
750 | start_block = (__u32 *) request->cpdata; | |
751 | if (*start_block != device->blk_data.block_position) { | |
752 | /* Add the start offset of the file to get the real block. */ | |
753 | *start_block += device->bof; | |
754 | tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); | |
755 | } | |
756 | } | |
757 | #endif | |
758 | ||
cced1dd4 MH |
759 | static void tape_3590_med_state_set(struct tape_device *device, |
760 | struct tape_3590_med_sense *sense) | |
761 | { | |
762 | struct tape390_crypt_info *c_info; | |
763 | ||
764 | c_info = &TAPE_3590_CRYPT_INFO(device); | |
765 | ||
1b9fd76e MH |
766 | DBF_EVENT(6, "medium state: %x:%x\n", sense->macst, sense->masst); |
767 | switch (sense->macst) { | |
768 | case 0x04: | |
769 | case 0x05: | |
770 | case 0x06: | |
cced1dd4 MH |
771 | tape_med_state_set(device, MS_UNLOADED); |
772 | TAPE_3590_CRYPT_INFO(device).medium_status = 0; | |
773 | return; | |
1b9fd76e MH |
774 | case 0x08: |
775 | case 0x09: | |
776 | tape_med_state_set(device, MS_LOADED); | |
777 | break; | |
778 | default: | |
779 | tape_med_state_set(device, MS_UNKNOWN); | |
cced1dd4 MH |
780 | return; |
781 | } | |
cced1dd4 MH |
782 | c_info->medium_status |= TAPE390_MEDIUM_LOADED_MASK; |
783 | if (sense->flags & MSENSE_CRYPT_MASK) { | |
ab640db0 | 784 | DBF_EVENT(6, "Medium is encrypted (%04x)\n", sense->flags); |
cced1dd4 MH |
785 | c_info->medium_status |= TAPE390_MEDIUM_ENCRYPTED_MASK; |
786 | } else { | |
787 | DBF_EVENT(6, "Medium is not encrypted %04x\n", sense->flags); | |
788 | c_info->medium_status &= ~TAPE390_MEDIUM_ENCRYPTED_MASK; | |
789 | } | |
790 | } | |
791 | ||
b6cba4ee SB |
792 | /* |
793 | * The done handler is called at device/channel end and wakes up the sleeping | |
794 | * process | |
795 | */ | |
796 | static int | |
797 | tape_3590_done(struct tape_device *device, struct tape_request *request) | |
798 | { | |
cced1dd4 | 799 | struct tape_3590_disc_data *disc_data; |
b6cba4ee SB |
800 | |
801 | DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]); | |
cced1dd4 | 802 | disc_data = device->discdata; |
b6cba4ee SB |
803 | |
804 | switch (request->op) { | |
805 | case TO_BSB: | |
806 | case TO_BSF: | |
807 | case TO_DSE: | |
808 | case TO_FSB: | |
809 | case TO_FSF: | |
810 | case TO_LBL: | |
811 | case TO_RFO: | |
812 | case TO_RBA: | |
813 | case TO_REW: | |
814 | case TO_WRI: | |
815 | case TO_WTM: | |
816 | case TO_BLOCK: | |
817 | case TO_LOAD: | |
818 | tape_med_state_set(device, MS_LOADED); | |
819 | break; | |
820 | case TO_RUN: | |
821 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 822 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
823 | break; |
824 | case TO_MSEN: | |
cced1dd4 MH |
825 | tape_3590_med_state_set(device, request->cpdata); |
826 | break; | |
827 | case TO_CRYPT_ON: | |
828 | TAPE_3590_CRYPT_INFO(device).status | |
829 | |= TAPE390_CRYPT_ON_MASK; | |
830 | *(device->modeset_byte) |= 0x03; | |
831 | break; | |
832 | case TO_CRYPT_OFF: | |
833 | TAPE_3590_CRYPT_INFO(device).status | |
834 | &= ~TAPE390_CRYPT_ON_MASK; | |
835 | *(device->modeset_byte) &= ~0x03; | |
b6cba4ee SB |
836 | break; |
837 | case TO_RBI: /* RBI seems to succeed even without medium loaded. */ | |
838 | case TO_NOP: /* Same to NOP. */ | |
839 | case TO_READ_CONFIG: | |
840 | case TO_READ_ATTMSG: | |
841 | case TO_DIS: | |
842 | case TO_ASSIGN: | |
843 | case TO_UNASSIGN: | |
b6cba4ee | 844 | case TO_SIZE: |
cced1dd4 MH |
845 | case TO_KEKL_SET: |
846 | case TO_KEKL_QUERY: | |
e2963062 | 847 | case TO_RDC: |
b6cba4ee SB |
848 | break; |
849 | } | |
850 | return TAPE_IO_SUCCESS; | |
851 | } | |
852 | ||
853 | /* | |
eef35c2d | 854 | * This function is called, when error recovery was successful |
b6cba4ee SB |
855 | */ |
856 | static inline int | |
857 | tape_3590_erp_succeded(struct tape_device *device, struct tape_request *request) | |
858 | { | |
73ac36ea | 859 | DBF_EVENT(3, "Error Recovery successful for %s\n", |
b6cba4ee SB |
860 | tape_op_verbose[request->op]); |
861 | return tape_3590_done(device, request); | |
862 | } | |
863 | ||
864 | /* | |
eef35c2d | 865 | * This function is called, when error recovery was not successful |
b6cba4ee SB |
866 | */ |
867 | static inline int | |
868 | tape_3590_erp_failed(struct tape_device *device, struct tape_request *request, | |
869 | struct irb *irb, int rc) | |
870 | { | |
871 | DBF_EVENT(3, "Error Recovery failed for %s\n", | |
872 | tape_op_verbose[request->op]); | |
873 | tape_dump_sense_dbf(device, request, irb); | |
874 | return rc; | |
875 | } | |
876 | ||
877 | /* | |
878 | * Error Recovery do retry | |
879 | */ | |
880 | static inline int | |
881 | tape_3590_erp_retry(struct tape_device *device, struct tape_request *request, | |
882 | struct irb *irb) | |
883 | { | |
884 | DBF_EVENT(2, "Retry: %s\n", tape_op_verbose[request->op]); | |
885 | tape_dump_sense_dbf(device, request, irb); | |
886 | return TAPE_IO_RETRY; | |
887 | } | |
888 | ||
889 | /* | |
890 | * Handle unsolicited interrupts | |
891 | */ | |
892 | static int | |
893 | tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb) | |
894 | { | |
23d805b6 | 895 | if (irb->scsw.cmd.dstat == DEV_STAT_CHN_END) |
b6cba4ee SB |
896 | /* Probably result of halt ssch */ |
897 | return TAPE_IO_PENDING; | |
23d805b6 | 898 | else if (irb->scsw.cmd.dstat == 0x85) |
1b9fd76e MH |
899 | /* Device Ready */ |
900 | DBF_EVENT(3, "unsol.irq! tape ready: %08x\n", device->cdev_id); | |
23d805b6 | 901 | else if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
b6cba4ee | 902 | tape_3590_schedule_work(device, TO_READ_ATTMSG); |
1b9fd76e | 903 | } else { |
b6cba4ee | 904 | DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id); |
ab640db0 | 905 | tape_dump_sense_dbf(device, NULL, irb); |
b6cba4ee | 906 | } |
1b9fd76e MH |
907 | /* check medium state */ |
908 | tape_3590_schedule_work(device, TO_MSEN); | |
b6cba4ee SB |
909 | return TAPE_IO_SUCCESS; |
910 | } | |
911 | ||
912 | /* | |
913 | * Basic Recovery routine | |
914 | */ | |
915 | static int | |
916 | tape_3590_erp_basic(struct tape_device *device, struct tape_request *request, | |
917 | struct irb *irb, int rc) | |
918 | { | |
919 | struct tape_3590_sense *sense; | |
920 | ||
921 | sense = (struct tape_3590_sense *) irb->ecw; | |
922 | ||
923 | switch (sense->bra) { | |
924 | case SENSE_BRA_PER: | |
925 | return tape_3590_erp_failed(device, request, irb, rc); | |
926 | case SENSE_BRA_CONT: | |
927 | return tape_3590_erp_succeded(device, request); | |
928 | case SENSE_BRA_RE: | |
929 | return tape_3590_erp_retry(device, request, irb); | |
930 | case SENSE_BRA_DRE: | |
931 | return tape_3590_erp_failed(device, request, irb, rc); | |
932 | default: | |
b6cba4ee SB |
933 | BUG(); |
934 | return TAPE_IO_STOP; | |
935 | } | |
936 | } | |
937 | ||
938 | /* | |
939 | * RDL: Read Device (buffered) log | |
940 | */ | |
941 | static int | |
942 | tape_3590_erp_read_buf_log(struct tape_device *device, | |
943 | struct tape_request *request, struct irb *irb) | |
944 | { | |
945 | /* | |
946 | * We just do the basic error recovery at the moment (retry). | |
947 | * Perhaps in the future, we read the log and dump it somewhere... | |
948 | */ | |
949 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
950 | } | |
951 | ||
952 | /* | |
953 | * SWAP: Swap Devices | |
954 | */ | |
955 | static int | |
956 | tape_3590_erp_swap(struct tape_device *device, struct tape_request *request, | |
957 | struct irb *irb) | |
958 | { | |
959 | /* | |
960 | * This error recovery should swap the tapes | |
961 | * if the original has a problem. The operation | |
962 | * should proceed with the new tape... this | |
963 | * should probably be done in user space! | |
964 | */ | |
ab640db0 CO |
965 | dev_warn (&device->cdev->dev, "The tape medium must be loaded into a " |
966 | "different tape unit\n"); | |
b6cba4ee SB |
967 | return tape_3590_erp_basic(device, request, irb, -EIO); |
968 | } | |
969 | ||
970 | /* | |
971 | * LBY: Long Busy | |
972 | */ | |
973 | static int | |
974 | tape_3590_erp_long_busy(struct tape_device *device, | |
975 | struct tape_request *request, struct irb *irb) | |
976 | { | |
cced1dd4 MH |
977 | DBF_EVENT(6, "Device is busy\n"); |
978 | return TAPE_IO_LONG_BUSY; | |
b6cba4ee SB |
979 | } |
980 | ||
981 | /* | |
982 | * SPI: Special Intercept | |
983 | */ | |
984 | static int | |
985 | tape_3590_erp_special_interrupt(struct tape_device *device, | |
986 | struct tape_request *request, struct irb *irb) | |
987 | { | |
988 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
989 | } | |
990 | ||
991 | /* | |
992 | * RDA: Read Alternate | |
993 | */ | |
994 | static int | |
995 | tape_3590_erp_read_alternate(struct tape_device *device, | |
996 | struct tape_request *request, struct irb *irb) | |
997 | { | |
998 | struct tape_3590_disc_data *data; | |
999 | ||
1000 | /* | |
1001 | * The issued Read Backward or Read Previous command is not | |
1002 | * supported by the device | |
1003 | * The recovery action should be to issue another command: | |
1004 | * Read Revious: if Read Backward is not supported | |
1005 | * Read Backward: if Read Previous is not supported | |
1006 | */ | |
1007 | data = device->discdata; | |
1008 | if (data->read_back_op == READ_PREVIOUS) { | |
1009 | DBF_EVENT(2, "(%08x): No support for READ_PREVIOUS command\n", | |
1010 | device->cdev_id); | |
1011 | data->read_back_op = READ_BACKWARD; | |
1012 | } else { | |
1013 | DBF_EVENT(2, "(%08x): No support for READ_BACKWARD command\n", | |
1014 | device->cdev_id); | |
1015 | data->read_back_op = READ_PREVIOUS; | |
1016 | } | |
1017 | tape_3590_read_opposite(device, request); | |
1018 | return tape_3590_erp_retry(device, request, irb); | |
1019 | } | |
1020 | ||
1021 | /* | |
1022 | * Error Recovery read opposite | |
1023 | */ | |
1024 | static int | |
1025 | tape_3590_erp_read_opposite(struct tape_device *device, | |
1026 | struct tape_request *request, struct irb *irb) | |
1027 | { | |
1028 | switch (request->op) { | |
1029 | case TO_RFO: | |
1030 | /* | |
1031 | * We did read forward, but the data could not be read. | |
1032 | * We will read backward and then skip forward again. | |
1033 | */ | |
1034 | tape_3590_read_opposite(device, request); | |
1035 | return tape_3590_erp_retry(device, request, irb); | |
1036 | case TO_RBA: | |
1037 | /* We tried to read forward and backward, but hat no success */ | |
1038 | return tape_3590_erp_failed(device, request, irb, -EIO); | |
1039 | break; | |
1040 | default: | |
b6cba4ee SB |
1041 | return tape_3590_erp_failed(device, request, irb, -EIO); |
1042 | } | |
1043 | } | |
1044 | ||
1045 | /* | |
1046 | * Print an MIM (Media Information Message) (message code f0) | |
1047 | */ | |
1048 | static void | |
1049 | tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb) | |
1050 | { | |
1051 | struct tape_3590_sense *sense; | |
ab640db0 CO |
1052 | char *exception, *service; |
1053 | ||
1054 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1055 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1056 | ||
1057 | if (!exception || !service) | |
1058 | goto out_nomem; | |
b6cba4ee SB |
1059 | |
1060 | sense = (struct tape_3590_sense *) irb->ecw; | |
1061 | /* Exception Message */ | |
1062 | switch (sense->fmt.f70.emc) { | |
1063 | case 0x02: | |
ab640db0 | 1064 | snprintf(exception, BUFSIZE, "Data degraded"); |
b6cba4ee SB |
1065 | break; |
1066 | case 0x03: | |
ab640db0 CO |
1067 | snprintf(exception, BUFSIZE, "Data degraded in partion %i", |
1068 | sense->fmt.f70.mp); | |
b6cba4ee SB |
1069 | break; |
1070 | case 0x04: | |
ab640db0 | 1071 | snprintf(exception, BUFSIZE, "Medium degraded"); |
b6cba4ee SB |
1072 | break; |
1073 | case 0x05: | |
ab640db0 CO |
1074 | snprintf(exception, BUFSIZE, "Medium degraded in partition %i", |
1075 | sense->fmt.f70.mp); | |
b6cba4ee SB |
1076 | break; |
1077 | case 0x06: | |
ab640db0 | 1078 | snprintf(exception, BUFSIZE, "Block 0 Error"); |
b6cba4ee SB |
1079 | break; |
1080 | case 0x07: | |
ab640db0 CO |
1081 | snprintf(exception, BUFSIZE, "Medium Exception 0x%02x", |
1082 | sense->fmt.f70.md); | |
b6cba4ee SB |
1083 | break; |
1084 | default: | |
ab640db0 CO |
1085 | snprintf(exception, BUFSIZE, "0x%02x", |
1086 | sense->fmt.f70.emc); | |
b6cba4ee SB |
1087 | break; |
1088 | } | |
1089 | /* Service Message */ | |
1090 | switch (sense->fmt.f70.smc) { | |
1091 | case 0x02: | |
ab640db0 CO |
1092 | snprintf(service, BUFSIZE, "Reference Media maintenance " |
1093 | "procedure %i", sense->fmt.f70.md); | |
b6cba4ee SB |
1094 | break; |
1095 | default: | |
ab640db0 CO |
1096 | snprintf(service, BUFSIZE, "0x%02x", |
1097 | sense->fmt.f70.smc); | |
b6cba4ee SB |
1098 | break; |
1099 | } | |
ab640db0 CO |
1100 | |
1101 | dev_warn (&device->cdev->dev, "Tape media information: exception %s, " | |
1102 | "service %s\n", exception, service); | |
1103 | ||
1104 | out_nomem: | |
1105 | kfree(exception); | |
1106 | kfree(service); | |
b6cba4ee SB |
1107 | } |
1108 | ||
1109 | /* | |
1110 | * Print an I/O Subsystem Service Information Message (message code f1) | |
1111 | */ | |
1112 | static void | |
1113 | tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb) | |
1114 | { | |
1115 | struct tape_3590_sense *sense; | |
ab640db0 CO |
1116 | char *exception, *service; |
1117 | ||
1118 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1119 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1120 | ||
1121 | if (!exception || !service) | |
1122 | goto out_nomem; | |
b6cba4ee SB |
1123 | |
1124 | sense = (struct tape_3590_sense *) irb->ecw; | |
1125 | /* Exception Message */ | |
1126 | switch (sense->fmt.f71.emc) { | |
1127 | case 0x01: | |
ab640db0 | 1128 | snprintf(exception, BUFSIZE, "Effect of failure is unknown"); |
b6cba4ee SB |
1129 | break; |
1130 | case 0x02: | |
ab640db0 CO |
1131 | snprintf(exception, BUFSIZE, "CU Exception - no performance " |
1132 | "impact"); | |
b6cba4ee SB |
1133 | break; |
1134 | case 0x03: | |
ab640db0 CO |
1135 | snprintf(exception, BUFSIZE, "CU Exception on channel " |
1136 | "interface 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1137 | break; |
1138 | case 0x04: | |
ab640db0 CO |
1139 | snprintf(exception, BUFSIZE, "CU Exception on device path " |
1140 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1141 | break; |
1142 | case 0x05: | |
ab640db0 CO |
1143 | snprintf(exception, BUFSIZE, "CU Exception on library path " |
1144 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1145 | break; |
1146 | case 0x06: | |
ab640db0 CO |
1147 | snprintf(exception, BUFSIZE, "CU Exception on node 0x%02x", |
1148 | sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1149 | break; |
1150 | case 0x07: | |
ab640db0 CO |
1151 | snprintf(exception, BUFSIZE, "CU Exception on partition " |
1152 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1153 | break; |
1154 | default: | |
ab640db0 CO |
1155 | snprintf(exception, BUFSIZE, "0x%02x", |
1156 | sense->fmt.f71.emc); | |
b6cba4ee SB |
1157 | } |
1158 | /* Service Message */ | |
1159 | switch (sense->fmt.f71.smc) { | |
1160 | case 0x01: | |
ab640db0 | 1161 | snprintf(service, BUFSIZE, "Repair impact is unknown"); |
b6cba4ee SB |
1162 | break; |
1163 | case 0x02: | |
ab640db0 CO |
1164 | snprintf(service, BUFSIZE, "Repair will not impact cu " |
1165 | "performance"); | |
b6cba4ee SB |
1166 | break; |
1167 | case 0x03: | |
1168 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1169 | snprintf(service, BUFSIZE, "Repair will disable node " |
1170 | "0x%x on CU", sense->fmt.f71.md[1]); | |
b6cba4ee | 1171 | else |
ab640db0 CO |
1172 | snprintf(service, BUFSIZE, "Repair will disable " |
1173 | "nodes (0x%x-0x%x) on CU", sense->fmt.f71.md[1], | |
1174 | sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1175 | break; |
1176 | case 0x04: | |
1177 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1178 | snprintf(service, BUFSIZE, "Repair will disable " |
1179 | "channel path 0x%x on CU", | |
1180 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1181 | else |
ab640db0 CO |
1182 | snprintf(service, BUFSIZE, "Repair will disable cannel" |
1183 | " paths (0x%x-0x%x) on CU", | |
1184 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1185 | break; |
1186 | case 0x05: | |
1187 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1188 | snprintf(service, BUFSIZE, "Repair will disable device" |
1189 | " path 0x%x on CU", sense->fmt.f71.md[1]); | |
b6cba4ee | 1190 | else |
ab640db0 CO |
1191 | snprintf(service, BUFSIZE, "Repair will disable device" |
1192 | " paths (0x%x-0x%x) on CU", | |
1193 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1194 | break; |
1195 | case 0x06: | |
1196 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1197 | snprintf(service, BUFSIZE, "Repair will disable " |
1198 | "library path 0x%x on CU", | |
1199 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1200 | else |
ab640db0 CO |
1201 | snprintf(service, BUFSIZE, "Repair will disable " |
1202 | "library paths (0x%x-0x%x) on CU", | |
1203 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1204 | break; |
1205 | case 0x07: | |
ab640db0 | 1206 | snprintf(service, BUFSIZE, "Repair will disable access to CU"); |
b6cba4ee SB |
1207 | break; |
1208 | default: | |
ab640db0 CO |
1209 | snprintf(service, BUFSIZE, "0x%02x", |
1210 | sense->fmt.f71.smc); | |
b6cba4ee | 1211 | } |
ab640db0 CO |
1212 | |
1213 | dev_warn (&device->cdev->dev, "I/O subsystem information: exception" | |
1214 | " %s, service %s\n", exception, service); | |
1215 | out_nomem: | |
1216 | kfree(exception); | |
1217 | kfree(service); | |
b6cba4ee SB |
1218 | } |
1219 | ||
1220 | /* | |
1221 | * Print an Device Subsystem Service Information Message (message code f2) | |
1222 | */ | |
1223 | static void | |
1224 | tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb) | |
1225 | { | |
1226 | struct tape_3590_sense *sense; | |
ab640db0 CO |
1227 | char *exception, *service; |
1228 | ||
1229 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1230 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1231 | ||
1232 | if (!exception || !service) | |
1233 | goto out_nomem; | |
b6cba4ee SB |
1234 | |
1235 | sense = (struct tape_3590_sense *) irb->ecw; | |
1236 | /* Exception Message */ | |
1237 | switch (sense->fmt.f71.emc) { | |
1238 | case 0x01: | |
ab640db0 | 1239 | snprintf(exception, BUFSIZE, "Effect of failure is unknown"); |
b6cba4ee SB |
1240 | break; |
1241 | case 0x02: | |
ab640db0 CO |
1242 | snprintf(exception, BUFSIZE, "DV Exception - no performance" |
1243 | " impact"); | |
b6cba4ee SB |
1244 | break; |
1245 | case 0x03: | |
ab640db0 CO |
1246 | snprintf(exception, BUFSIZE, "DV Exception on channel " |
1247 | "interface 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1248 | break; |
1249 | case 0x04: | |
ab640db0 CO |
1250 | snprintf(exception, BUFSIZE, "DV Exception on loader 0x%02x", |
1251 | sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1252 | break; |
1253 | case 0x05: | |
ab640db0 CO |
1254 | snprintf(exception, BUFSIZE, "DV Exception on message display" |
1255 | " 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1256 | break; |
1257 | case 0x06: | |
ab640db0 | 1258 | snprintf(exception, BUFSIZE, "DV Exception in tape path"); |
b6cba4ee SB |
1259 | break; |
1260 | case 0x07: | |
ab640db0 | 1261 | snprintf(exception, BUFSIZE, "DV Exception in drive"); |
b6cba4ee SB |
1262 | break; |
1263 | default: | |
ab640db0 CO |
1264 | snprintf(exception, BUFSIZE, "0x%02x", |
1265 | sense->fmt.f71.emc); | |
b6cba4ee SB |
1266 | } |
1267 | /* Service Message */ | |
1268 | switch (sense->fmt.f71.smc) { | |
1269 | case 0x01: | |
ab640db0 | 1270 | snprintf(service, BUFSIZE, "Repair impact is unknown"); |
b6cba4ee SB |
1271 | break; |
1272 | case 0x02: | |
ab640db0 CO |
1273 | snprintf(service, BUFSIZE, "Repair will not impact device " |
1274 | "performance"); | |
b6cba4ee SB |
1275 | break; |
1276 | case 0x03: | |
1277 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1278 | snprintf(service, BUFSIZE, "Repair will disable " |
1279 | "channel path 0x%x on DV", | |
1280 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1281 | else |
ab640db0 CO |
1282 | snprintf(service, BUFSIZE, "Repair will disable " |
1283 | "channel path (0x%x-0x%x) on DV", | |
1284 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1285 | break; |
1286 | case 0x04: | |
1287 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1288 | snprintf(service, BUFSIZE, "Repair will disable " |
1289 | "interface 0x%x on DV", sense->fmt.f71.md[1]); | |
b6cba4ee | 1290 | else |
ab640db0 CO |
1291 | snprintf(service, BUFSIZE, "Repair will disable " |
1292 | "interfaces (0x%x-0x%x) on DV", | |
1293 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1294 | break; |
1295 | case 0x05: | |
1296 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1297 | snprintf(service, BUFSIZE, "Repair will disable loader" |
1298 | " 0x%x on DV", sense->fmt.f71.md[1]); | |
b6cba4ee | 1299 | else |
ab640db0 CO |
1300 | snprintf(service, BUFSIZE, "Repair will disable loader" |
1301 | " (0x%x-0x%x) on DV", | |
1302 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1303 | break; |
1304 | case 0x07: | |
ab640db0 | 1305 | snprintf(service, BUFSIZE, "Repair will disable access to DV"); |
b6cba4ee SB |
1306 | break; |
1307 | case 0x08: | |
1308 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1309 | snprintf(service, BUFSIZE, "Repair will disable " |
1310 | "message display 0x%x on DV", | |
1311 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1312 | else |
ab640db0 CO |
1313 | snprintf(service, BUFSIZE, "Repair will disable " |
1314 | "message displays (0x%x-0x%x) on DV", | |
1315 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1316 | break; |
1317 | case 0x09: | |
ab640db0 | 1318 | snprintf(service, BUFSIZE, "Clean DV"); |
b6cba4ee SB |
1319 | break; |
1320 | default: | |
ab640db0 CO |
1321 | snprintf(service, BUFSIZE, "0x%02x", |
1322 | sense->fmt.f71.smc); | |
b6cba4ee | 1323 | } |
ab640db0 CO |
1324 | |
1325 | dev_warn (&device->cdev->dev, "Device subsystem information: exception" | |
1326 | " %s, service %s\n", exception, service); | |
1327 | out_nomem: | |
1328 | kfree(exception); | |
1329 | kfree(service); | |
b6cba4ee SB |
1330 | } |
1331 | ||
1332 | /* | |
1333 | * Print standard ERA Message | |
1334 | */ | |
1335 | static void | |
1336 | tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) | |
1337 | { | |
1338 | struct tape_3590_sense *sense; | |
1339 | ||
1340 | sense = (struct tape_3590_sense *) irb->ecw; | |
1341 | if (sense->mc == 0) | |
1342 | return; | |
1343 | if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) { | |
1344 | if (tape_3590_msg[sense->mc] != NULL) | |
ab640db0 CO |
1345 | dev_warn (&device->cdev->dev, "The tape unit has " |
1346 | "issued sense message %s\n", | |
1347 | tape_3590_msg[sense->mc]); | |
1348 | else | |
1349 | dev_warn (&device->cdev->dev, "The tape unit has " | |
1350 | "issued an unknown sense message code 0x%x\n", | |
1351 | sense->mc); | |
b6cba4ee SB |
1352 | return; |
1353 | } | |
1354 | if (sense->mc == 0xf0) { | |
1355 | /* Standard Media Information Message */ | |
ab640db0 CO |
1356 | dev_warn (&device->cdev->dev, "MIM SEV=%i, MC=%02x, ES=%x/%x, " |
1357 | "RC=%02x-%04x-%02x\n", sense->fmt.f70.sev, sense->mc, | |
1358 | sense->fmt.f70.emc, sense->fmt.f70.smc, | |
1359 | sense->fmt.f70.refcode, sense->fmt.f70.mid, | |
1360 | sense->fmt.f70.fid); | |
b6cba4ee SB |
1361 | tape_3590_print_mim_msg_f0(device, irb); |
1362 | return; | |
1363 | } | |
1364 | if (sense->mc == 0xf1) { | |
1365 | /* Standard I/O Subsystem Service Information Message */ | |
ab640db0 CO |
1366 | dev_warn (&device->cdev->dev, "IOSIM SEV=%i, DEVTYPE=3590/%02x," |
1367 | " MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", | |
1368 | sense->fmt.f71.sev, device->cdev->id.dev_model, | |
1369 | sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, | |
1370 | sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, | |
1371 | sense->fmt.f71.refcode3); | |
b6cba4ee SB |
1372 | tape_3590_print_io_sim_msg_f1(device, irb); |
1373 | return; | |
1374 | } | |
1375 | if (sense->mc == 0xf2) { | |
1376 | /* Standard Device Service Information Message */ | |
ab640db0 CO |
1377 | dev_warn (&device->cdev->dev, "DEVSIM SEV=%i, DEVTYPE=3590/%02x" |
1378 | ", MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", | |
1379 | sense->fmt.f71.sev, device->cdev->id.dev_model, | |
1380 | sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, | |
1381 | sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, | |
1382 | sense->fmt.f71.refcode3); | |
b6cba4ee SB |
1383 | tape_3590_print_dev_sim_msg_f2(device, irb); |
1384 | return; | |
1385 | } | |
1386 | if (sense->mc == 0xf3) { | |
1387 | /* Standard Library Service Information Message */ | |
1388 | return; | |
1389 | } | |
ab640db0 CO |
1390 | dev_warn (&device->cdev->dev, "The tape unit has issued an unknown " |
1391 | "sense message code %x\n", sense->mc); | |
b6cba4ee SB |
1392 | } |
1393 | ||
cced1dd4 MH |
1394 | static int tape_3590_crypt_error(struct tape_device *device, |
1395 | struct tape_request *request, struct irb *irb) | |
1396 | { | |
1397 | u8 cu_rc, ekm_rc1; | |
1398 | u16 ekm_rc2; | |
1399 | u32 drv_rc; | |
2a0217d5 KS |
1400 | const char *bus_id; |
1401 | char *sense; | |
cced1dd4 MH |
1402 | |
1403 | sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data; | |
2a0217d5 | 1404 | bus_id = dev_name(&device->cdev->dev); |
cced1dd4 MH |
1405 | cu_rc = sense[0]; |
1406 | drv_rc = *((u32*) &sense[5]) & 0xffffff; | |
1407 | ekm_rc1 = sense[9]; | |
1408 | ekm_rc2 = *((u16*) &sense[10]); | |
1409 | if ((cu_rc == 0) && (ekm_rc2 == 0xee31)) | |
1410 | /* key not defined on EKM */ | |
1411 | return tape_3590_erp_basic(device, request, irb, -EKEYREJECTED); | |
1412 | if ((cu_rc == 1) || (cu_rc == 2)) | |
1413 | /* No connection to EKM */ | |
1414 | return tape_3590_erp_basic(device, request, irb, -ENOTCONN); | |
1415 | ||
ab640db0 CO |
1416 | dev_err (&device->cdev->dev, "The tape unit failed to obtain the " |
1417 | "encryption key from EKM\n"); | |
cced1dd4 MH |
1418 | |
1419 | return tape_3590_erp_basic(device, request, irb, -ENOKEY); | |
1420 | } | |
1421 | ||
b6cba4ee SB |
1422 | /* |
1423 | * 3590 error Recovery routine: | |
1424 | * If possible, it tries to recover from the error. If this is not possible, | |
1425 | * inform the user about the problem. | |
1426 | */ | |
1427 | static int | |
1428 | tape_3590_unit_check(struct tape_device *device, struct tape_request *request, | |
1429 | struct irb *irb) | |
1430 | { | |
1431 | struct tape_3590_sense *sense; | |
1432 | int rc; | |
1433 | ||
1434 | #ifdef CONFIG_S390_TAPE_BLOCK | |
1435 | if (request->op == TO_BLOCK) { | |
1436 | /* | |
1437 | * Recovery for block device requests. Set the block_position | |
1438 | * to something invalid and retry. | |
1439 | */ | |
1440 | device->blk_data.block_position = -1; | |
1441 | if (request->retries-- <= 0) | |
1442 | return tape_3590_erp_failed(device, request, irb, -EIO); | |
1443 | else | |
1444 | return tape_3590_erp_retry(device, request, irb); | |
1445 | } | |
1446 | #endif | |
1447 | ||
1448 | sense = (struct tape_3590_sense *) irb->ecw; | |
1449 | ||
cced1dd4 MH |
1450 | DBF_EVENT(6, "Unit Check: RQC = %x\n", sense->rc_rqc); |
1451 | ||
b6cba4ee SB |
1452 | /* |
1453 | * First check all RC-QRCs where we want to do something special | |
1454 | * - "break": basic error recovery is done | |
1455 | * - "goto out:": just print error message if available | |
1456 | */ | |
1457 | rc = -EIO; | |
1458 | switch (sense->rc_rqc) { | |
1459 | ||
1460 | case 0x1110: | |
1461 | tape_3590_print_era_msg(device, irb); | |
1462 | return tape_3590_erp_read_buf_log(device, request, irb); | |
1463 | ||
1464 | case 0x2011: | |
1465 | tape_3590_print_era_msg(device, irb); | |
1466 | return tape_3590_erp_read_alternate(device, request, irb); | |
1467 | ||
1468 | case 0x2230: | |
1469 | case 0x2231: | |
1470 | tape_3590_print_era_msg(device, irb); | |
1471 | return tape_3590_erp_special_interrupt(device, request, irb); | |
cced1dd4 MH |
1472 | case 0x2240: |
1473 | return tape_3590_crypt_error(device, request, irb); | |
b6cba4ee SB |
1474 | |
1475 | case 0x3010: | |
1476 | DBF_EVENT(2, "(%08x): Backward at Beginning of Partition\n", | |
1477 | device->cdev_id); | |
1478 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1479 | case 0x3012: | |
1480 | DBF_EVENT(2, "(%08x): Forward at End of Partition\n", | |
1481 | device->cdev_id); | |
1482 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1483 | case 0x3020: | |
1484 | DBF_EVENT(2, "(%08x): End of Data Mark\n", device->cdev_id); | |
1485 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1486 | ||
1487 | case 0x3122: | |
1488 | DBF_EVENT(2, "(%08x): Rewind Unload initiated\n", | |
1489 | device->cdev_id); | |
1490 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1491 | case 0x3123: | |
1492 | DBF_EVENT(2, "(%08x): Rewind Unload complete\n", | |
1493 | device->cdev_id); | |
1494 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 1495 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1496 | return tape_3590_erp_basic(device, request, irb, 0); |
1497 | ||
1498 | case 0x4010: | |
1499 | /* | |
1500 | * print additional msg since default msg | |
1501 | * "device intervention" is not very meaningfull | |
1502 | */ | |
b6cba4ee | 1503 | tape_med_state_set(device, MS_UNLOADED); |
cced1dd4 | 1504 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1505 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
1506 | case 0x4012: /* Device Long Busy */ | |
cced1dd4 MH |
1507 | /* XXX: Also use long busy handling here? */ |
1508 | DBF_EVENT(6, "(%08x): LONG BUSY\n", device->cdev_id); | |
b6cba4ee | 1509 | tape_3590_print_era_msg(device, irb); |
cced1dd4 MH |
1510 | return tape_3590_erp_basic(device, request, irb, -EBUSY); |
1511 | case 0x4014: | |
1512 | DBF_EVENT(6, "(%08x): Crypto LONG BUSY\n", device->cdev_id); | |
b6cba4ee SB |
1513 | return tape_3590_erp_long_busy(device, request, irb); |
1514 | ||
1515 | case 0x5010: | |
1516 | if (sense->rac == 0xd0) { | |
1517 | /* Swap */ | |
1518 | tape_3590_print_era_msg(device, irb); | |
1519 | return tape_3590_erp_swap(device, request, irb); | |
1520 | } | |
1521 | if (sense->rac == 0x26) { | |
1522 | /* Read Opposite */ | |
1523 | tape_3590_print_era_msg(device, irb); | |
1524 | return tape_3590_erp_read_opposite(device, request, | |
1525 | irb); | |
1526 | } | |
1527 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1528 | case 0x5020: | |
1529 | case 0x5021: | |
1530 | case 0x5022: | |
1531 | case 0x5040: | |
1532 | case 0x5041: | |
1533 | case 0x5042: | |
1534 | tape_3590_print_era_msg(device, irb); | |
1535 | return tape_3590_erp_swap(device, request, irb); | |
1536 | ||
1537 | case 0x5110: | |
1538 | case 0x5111: | |
1539 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); | |
1540 | ||
1541 | case 0x5120: | |
1542 | case 0x1120: | |
1543 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 1544 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1545 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
1546 | ||
1547 | case 0x6020: | |
b6cba4ee SB |
1548 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); |
1549 | ||
1550 | case 0x8011: | |
b6cba4ee SB |
1551 | return tape_3590_erp_basic(device, request, irb, -EPERM); |
1552 | case 0x8013: | |
ab640db0 CO |
1553 | dev_warn (&device->cdev->dev, "A different host has privileged" |
1554 | " access to the tape unit\n"); | |
b6cba4ee SB |
1555 | return tape_3590_erp_basic(device, request, irb, -EPERM); |
1556 | default: | |
1557 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | /* | |
1562 | * 3590 interrupt handler: | |
1563 | */ | |
1564 | static int | |
1565 | tape_3590_irq(struct tape_device *device, struct tape_request *request, | |
1566 | struct irb *irb) | |
1567 | { | |
1568 | if (request == NULL) | |
1569 | return tape_3590_unsolicited_irq(device, irb); | |
1570 | ||
23d805b6 PO |
1571 | if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) && |
1572 | (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) && | |
1573 | (request->op == TO_WRI)) { | |
b6cba4ee SB |
1574 | /* Write at end of volume */ |
1575 | DBF_EVENT(2, "End of volume\n"); | |
1576 | return tape_3590_erp_failed(device, request, irb, -ENOSPC); | |
1577 | } | |
1578 | ||
23d805b6 | 1579 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
b6cba4ee SB |
1580 | return tape_3590_unit_check(device, request, irb); |
1581 | ||
23d805b6 PO |
1582 | if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) { |
1583 | if (irb->scsw.cmd.dstat == DEV_STAT_UNIT_EXCEP) { | |
b6cba4ee SB |
1584 | if (request->op == TO_FSB || request->op == TO_BSB) |
1585 | request->rescnt++; | |
1586 | else | |
1587 | DBF_EVENT(5, "Unit Exception!\n"); | |
1588 | } | |
1589 | ||
1590 | return tape_3590_done(device, request); | |
1591 | } | |
1592 | ||
23d805b6 | 1593 | if (irb->scsw.cmd.dstat & DEV_STAT_CHN_END) { |
b6cba4ee SB |
1594 | DBF_EVENT(2, "cannel end\n"); |
1595 | return TAPE_IO_PENDING; | |
1596 | } | |
1597 | ||
23d805b6 | 1598 | if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
b6cba4ee SB |
1599 | DBF_EVENT(2, "Unit Attention when busy..\n"); |
1600 | return TAPE_IO_PENDING; | |
1601 | } | |
1602 | ||
1603 | DBF_EVENT(6, "xunknownirq\n"); | |
ab640db0 | 1604 | tape_dump_sense_dbf(device, request, irb); |
b6cba4ee SB |
1605 | return TAPE_IO_STOP; |
1606 | } | |
1607 | ||
e2963062 MH |
1608 | |
1609 | static int tape_3590_read_dev_chars(struct tape_device *device, | |
1610 | struct tape_3590_rdc_data *rdc_data) | |
1611 | { | |
1612 | int rc; | |
1613 | struct tape_request *request; | |
1614 | ||
1615 | request = tape_alloc_request(1, sizeof(*rdc_data)); | |
1616 | if (IS_ERR(request)) | |
1617 | return PTR_ERR(request); | |
1618 | request->op = TO_RDC; | |
1619 | tape_ccw_end(request->cpaddr, CCW_CMD_RDC, sizeof(*rdc_data), | |
1620 | request->cpdata); | |
1621 | rc = tape_do_io(device, request); | |
1622 | if (rc == 0) | |
1623 | memcpy(rdc_data, request->cpdata, sizeof(*rdc_data)); | |
1624 | tape_free_request(request); | |
1625 | return rc; | |
1626 | } | |
1627 | ||
b6cba4ee SB |
1628 | /* |
1629 | * Setup device function | |
1630 | */ | |
1631 | static int | |
1632 | tape_3590_setup_device(struct tape_device *device) | |
1633 | { | |
1634 | int rc; | |
1635 | struct tape_3590_disc_data *data; | |
e2963062 | 1636 | struct tape_3590_rdc_data *rdc_data; |
b6cba4ee SB |
1637 | |
1638 | DBF_EVENT(6, "3590 device setup\n"); | |
cced1dd4 | 1639 | data = kzalloc(sizeof(struct tape_3590_disc_data), GFP_KERNEL | GFP_DMA); |
b6cba4ee SB |
1640 | if (data == NULL) |
1641 | return -ENOMEM; | |
1642 | data->read_back_op = READ_PREVIOUS; | |
1643 | device->discdata = data; | |
1644 | ||
e2963062 | 1645 | rdc_data = kmalloc(sizeof(*rdc_data), GFP_KERNEL | GFP_DMA); |
cced1dd4 MH |
1646 | if (!rdc_data) { |
1647 | rc = -ENOMEM; | |
1648 | goto fail_kmalloc; | |
1649 | } | |
e2963062 | 1650 | rc = tape_3590_read_dev_chars(device, rdc_data); |
cced1dd4 MH |
1651 | if (rc) { |
1652 | DBF_LH(3, "Read device characteristics failed!\n"); | |
1783e60f | 1653 | goto fail_rdc_data; |
cced1dd4 MH |
1654 | } |
1655 | rc = tape_std_assign(device); | |
1656 | if (rc) | |
1657 | goto fail_rdc_data; | |
e2963062 | 1658 | if (rdc_data->data[31] == 0x13) { |
cced1dd4 MH |
1659 | data->crypt_info.capability |= TAPE390_CRYPT_SUPPORTED_MASK; |
1660 | tape_3592_disable_crypt(device); | |
1661 | } else { | |
1662 | DBF_EVENT(6, "Device has NO crypto support\n"); | |
b6cba4ee | 1663 | } |
cced1dd4 MH |
1664 | /* Try to find out if medium is loaded */ |
1665 | rc = tape_3590_sense_medium(device); | |
1666 | if (rc) { | |
1667 | DBF_LH(3, "3590 medium sense returned %d\n", rc); | |
1668 | goto fail_rdc_data; | |
1669 | } | |
1670 | return 0; | |
b6cba4ee | 1671 | |
cced1dd4 MH |
1672 | fail_rdc_data: |
1673 | kfree(rdc_data); | |
1674 | fail_kmalloc: | |
1675 | kfree(data); | |
b6cba4ee SB |
1676 | return rc; |
1677 | } | |
1678 | ||
1679 | /* | |
1680 | * Cleanup device function | |
1681 | */ | |
1682 | static void | |
1683 | tape_3590_cleanup_device(struct tape_device *device) | |
1684 | { | |
6dca467a | 1685 | flush_workqueue(tape_3590_wq); |
b6cba4ee SB |
1686 | tape_std_unassign(device); |
1687 | ||
1688 | kfree(device->discdata); | |
1689 | device->discdata = NULL; | |
1690 | } | |
1691 | ||
1692 | /* | |
1693 | * List of 3590 magnetic tape commands. | |
1694 | */ | |
1695 | static tape_mtop_fn tape_3590_mtop[TAPE_NR_MTOPS] = { | |
1696 | [MTRESET] = tape_std_mtreset, | |
1697 | [MTFSF] = tape_std_mtfsf, | |
1698 | [MTBSF] = tape_std_mtbsf, | |
1699 | [MTFSR] = tape_std_mtfsr, | |
1700 | [MTBSR] = tape_std_mtbsr, | |
1701 | [MTWEOF] = tape_std_mtweof, | |
1702 | [MTREW] = tape_std_mtrew, | |
1703 | [MTOFFL] = tape_std_mtoffl, | |
1704 | [MTNOP] = tape_std_mtnop, | |
1705 | [MTRETEN] = tape_std_mtreten, | |
1706 | [MTBSFM] = tape_std_mtbsfm, | |
1707 | [MTFSFM] = tape_std_mtfsfm, | |
1708 | [MTEOM] = tape_std_mteom, | |
1709 | [MTERASE] = tape_std_mterase, | |
1710 | [MTRAS1] = NULL, | |
1711 | [MTRAS2] = NULL, | |
1712 | [MTRAS3] = NULL, | |
1713 | [MTSETBLK] = tape_std_mtsetblk, | |
1714 | [MTSETDENSITY] = NULL, | |
1715 | [MTSEEK] = tape_3590_mtseek, | |
1716 | [MTTELL] = tape_3590_mttell, | |
1717 | [MTSETDRVBUFFER] = NULL, | |
1718 | [MTFSS] = NULL, | |
1719 | [MTBSS] = NULL, | |
1720 | [MTWSM] = NULL, | |
1721 | [MTLOCK] = NULL, | |
1722 | [MTUNLOCK] = NULL, | |
1723 | [MTLOAD] = tape_std_mtload, | |
1724 | [MTUNLOAD] = tape_std_mtunload, | |
1725 | [MTCOMPRESSION] = tape_std_mtcompression, | |
1726 | [MTSETPART] = NULL, | |
1727 | [MTMKPART] = NULL | |
1728 | }; | |
1729 | ||
1730 | /* | |
1731 | * Tape discipline structure for 3590. | |
1732 | */ | |
1733 | static struct tape_discipline tape_discipline_3590 = { | |
1734 | .owner = THIS_MODULE, | |
1735 | .setup_device = tape_3590_setup_device, | |
1736 | .cleanup_device = tape_3590_cleanup_device, | |
1737 | .process_eov = tape_std_process_eov, | |
1738 | .irq = tape_3590_irq, | |
1739 | .read_block = tape_std_read_block, | |
1740 | .write_block = tape_std_write_block, | |
1741 | #ifdef CONFIG_S390_TAPE_BLOCK | |
1742 | .bread = tape_3590_bread, | |
1743 | .free_bread = tape_3590_free_bread, | |
1744 | .check_locate = tape_3590_check_locate, | |
1745 | #endif | |
1746 | .ioctl_fn = tape_3590_ioctl, | |
1747 | .mtop_array = tape_3590_mtop | |
1748 | }; | |
1749 | ||
1750 | static struct ccw_device_id tape_3590_ids[] = { | |
1751 | {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590}, | |
2cc924b8 | 1752 | {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592}, |
b6cba4ee SB |
1753 | { /* end of list */ } |
1754 | }; | |
1755 | ||
1756 | static int | |
1757 | tape_3590_online(struct ccw_device *cdev) | |
1758 | { | |
dff59b64 | 1759 | return tape_generic_online(dev_get_drvdata(&cdev->dev), |
b6cba4ee SB |
1760 | &tape_discipline_3590); |
1761 | } | |
1762 | ||
b6cba4ee SB |
1763 | static struct ccw_driver tape_3590_driver = { |
1764 | .name = "tape_3590", | |
1765 | .owner = THIS_MODULE, | |
1766 | .ids = tape_3590_ids, | |
1767 | .probe = tape_generic_probe, | |
1768 | .remove = tape_generic_remove, | |
4d7a3cdf | 1769 | .set_offline = tape_generic_offline, |
b6cba4ee | 1770 | .set_online = tape_3590_online, |
3ef32e62 | 1771 | .freeze = tape_generic_pm_suspend, |
b6cba4ee SB |
1772 | }; |
1773 | ||
1774 | /* | |
1775 | * Setup discipline structure. | |
1776 | */ | |
1777 | static int | |
1778 | tape_3590_init(void) | |
1779 | { | |
1780 | int rc; | |
1781 | ||
1782 | TAPE_DBF_AREA = debug_register("tape_3590", 2, 2, 4 * sizeof(long)); | |
1783 | debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view); | |
1784 | #ifdef DBF_LIKE_HELL | |
1785 | debug_set_level(TAPE_DBF_AREA, 6); | |
1786 | #endif | |
1787 | ||
1788 | DBF_EVENT(3, "3590 init\n"); | |
6dca467a TH |
1789 | |
1790 | tape_3590_wq = alloc_workqueue("tape_3590", 0, 0); | |
1791 | if (!tape_3590_wq) | |
1792 | return -ENOMEM; | |
1793 | ||
b6cba4ee SB |
1794 | /* Register driver for 3590 tapes. */ |
1795 | rc = ccw_driver_register(&tape_3590_driver); | |
6dca467a TH |
1796 | if (rc) { |
1797 | destroy_workqueue(tape_3590_wq); | |
b6cba4ee | 1798 | DBF_EVENT(3, "3590 init failed\n"); |
6dca467a | 1799 | } else |
b6cba4ee SB |
1800 | DBF_EVENT(3, "3590 registered\n"); |
1801 | return rc; | |
1802 | } | |
1803 | ||
1804 | static void | |
1805 | tape_3590_exit(void) | |
1806 | { | |
1807 | ccw_driver_unregister(&tape_3590_driver); | |
6dca467a | 1808 | destroy_workqueue(tape_3590_wq); |
b6cba4ee SB |
1809 | debug_unregister(TAPE_DBF_AREA); |
1810 | } | |
1811 | ||
1812 | MODULE_DEVICE_TABLE(ccw, tape_3590_ids); | |
1813 | MODULE_AUTHOR("(C) 2001,2006 IBM Corporation"); | |
1814 | MODULE_DESCRIPTION("Linux on zSeries channel attached 3590 tape device driver"); | |
1815 | MODULE_LICENSE("GPL"); | |
1816 | ||
1817 | module_init(tape_3590_init); | |
1818 | module_exit(tape_3590_exit); |