Commit | Line | Data |
---|---|---|
b6cba4ee | 1 | /* |
b6cba4ee SB |
2 | * tape device discipline for 3590 tapes. |
3 | * | |
3ef32e62 | 4 | * Copyright IBM Corp. 2001, 2009 |
b6cba4ee SB |
5 | * Author(s): Stefan Bader <shbader@de.ibm.com> |
6 | * Michael Holzheu <holzheu@de.ibm.com> | |
7 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
8 | */ | |
9 | ||
59e36927 | 10 | #define KMSG_COMPONENT "tape_3590" |
bb509912 | 11 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
ab640db0 | 12 | |
b6cba4ee | 13 | #include <linux/module.h> |
5a0e3ad6 | 14 | #include <linux/slab.h> |
b6cba4ee SB |
15 | #include <linux/init.h> |
16 | #include <linux/bio.h> | |
cced1dd4 | 17 | #include <asm/ebcdic.h> |
b6cba4ee SB |
18 | |
19 | #define TAPE_DBF_AREA tape_3590_dbf | |
ab640db0 | 20 | #define BUFSIZE 512 /* size of buffers for dynamic generated messages */ |
b6cba4ee SB |
21 | |
22 | #include "tape.h" | |
23 | #include "tape_std.h" | |
24 | #include "tape_3590.h" | |
25 | ||
6dca467a TH |
26 | static struct workqueue_struct *tape_3590_wq; |
27 | ||
b6cba4ee SB |
28 | /* |
29 | * Pointer to debug area. | |
30 | */ | |
31 | debug_info_t *TAPE_DBF_AREA = NULL; | |
32 | EXPORT_SYMBOL(TAPE_DBF_AREA); | |
33 | ||
34 | /******************************************************************* | |
eef35c2d | 35 | * Error Recovery functions: |
b6cba4ee SB |
36 | * - Read Opposite: implemented |
37 | * - Read Device (buffered) log: BRA | |
38 | * - Read Library log: BRA | |
39 | * - Swap Devices: BRA | |
cced1dd4 | 40 | * - Long Busy: implemented |
b6cba4ee SB |
41 | * - Special Intercept: BRA |
42 | * - Read Alternate: implemented | |
43 | *******************************************************************/ | |
44 | ||
b6cba4ee SB |
45 | static const char *tape_3590_msg[TAPE_3590_MAX_MSG] = { |
46 | [0x00] = "", | |
47 | [0x10] = "Lost Sense", | |
48 | [0x11] = "Assigned Elsewhere", | |
49 | [0x12] = "Allegiance Reset", | |
50 | [0x13] = "Shared Access Violation", | |
51 | [0x20] = "Command Reject", | |
52 | [0x21] = "Configuration Error", | |
53 | [0x22] = "Protection Exception", | |
54 | [0x23] = "Write Protect", | |
55 | [0x24] = "Write Length", | |
56 | [0x25] = "Read-Only Format", | |
57 | [0x31] = "Beginning of Partition", | |
58 | [0x33] = "End of Partition", | |
59 | [0x34] = "End of Data", | |
60 | [0x35] = "Block not found", | |
61 | [0x40] = "Device Intervention", | |
62 | [0x41] = "Loader Intervention", | |
63 | [0x42] = "Library Intervention", | |
64 | [0x50] = "Write Error", | |
65 | [0x51] = "Erase Error", | |
66 | [0x52] = "Formatting Error", | |
67 | [0x53] = "Read Error", | |
68 | [0x54] = "Unsupported Format", | |
69 | [0x55] = "No Formatting", | |
70 | [0x56] = "Positioning lost", | |
71 | [0x57] = "Read Length", | |
72 | [0x60] = "Unsupported Medium", | |
73 | [0x61] = "Medium Length Error", | |
74 | [0x62] = "Medium removed", | |
75 | [0x64] = "Load Check", | |
76 | [0x65] = "Unload Check", | |
77 | [0x70] = "Equipment Check", | |
78 | [0x71] = "Bus out Check", | |
79 | [0x72] = "Protocol Error", | |
80 | [0x73] = "Interface Error", | |
81 | [0x74] = "Overrun", | |
82 | [0x75] = "Halt Signal", | |
83 | [0x90] = "Device fenced", | |
84 | [0x91] = "Device Path fenced", | |
85 | [0xa0] = "Volume misplaced", | |
86 | [0xa1] = "Volume inaccessible", | |
87 | [0xa2] = "Volume in input", | |
88 | [0xa3] = "Volume ejected", | |
89 | [0xa4] = "All categories reserved", | |
90 | [0xa5] = "Duplicate Volume", | |
91 | [0xa6] = "Library Manager Offline", | |
92 | [0xa7] = "Library Output Station full", | |
93 | [0xa8] = "Vision System non-operational", | |
94 | [0xa9] = "Library Manager Equipment Check", | |
95 | [0xaa] = "Library Equipment Check", | |
96 | [0xab] = "All Library Cells full", | |
97 | [0xac] = "No Cleaner Volumes in Library", | |
98 | [0xad] = "I/O Station door open", | |
99 | [0xae] = "Subsystem environmental alert", | |
100 | }; | |
101 | ||
cced1dd4 MH |
102 | static int crypt_supported(struct tape_device *device) |
103 | { | |
104 | return TAPE390_CRYPT_SUPPORTED(TAPE_3590_CRYPT_INFO(device)); | |
105 | } | |
106 | ||
107 | static int crypt_enabled(struct tape_device *device) | |
108 | { | |
109 | return TAPE390_CRYPT_ON(TAPE_3590_CRYPT_INFO(device)); | |
110 | } | |
111 | ||
112 | static void ext_to_int_kekl(struct tape390_kekl *in, | |
113 | struct tape3592_kekl *out) | |
114 | { | |
115 | int i; | |
116 | ||
117 | memset(out, 0, sizeof(*out)); | |
118 | if (in->type == TAPE390_KEKL_TYPE_HASH) | |
119 | out->flags |= 0x40; | |
120 | if (in->type_on_tape == TAPE390_KEKL_TYPE_HASH) | |
121 | out->flags |= 0x80; | |
122 | strncpy(out->label, in->label, 64); | |
123 | for (i = strlen(in->label); i < sizeof(out->label); i++) | |
124 | out->label[i] = ' '; | |
125 | ASCEBC(out->label, sizeof(out->label)); | |
126 | } | |
127 | ||
128 | static void int_to_ext_kekl(struct tape3592_kekl *in, | |
129 | struct tape390_kekl *out) | |
130 | { | |
131 | memset(out, 0, sizeof(*out)); | |
132 | if(in->flags & 0x40) | |
133 | out->type = TAPE390_KEKL_TYPE_HASH; | |
134 | else | |
135 | out->type = TAPE390_KEKL_TYPE_LABEL; | |
136 | if(in->flags & 0x80) | |
137 | out->type_on_tape = TAPE390_KEKL_TYPE_HASH; | |
138 | else | |
139 | out->type_on_tape = TAPE390_KEKL_TYPE_LABEL; | |
140 | memcpy(out->label, in->label, sizeof(in->label)); | |
141 | EBCASC(out->label, sizeof(in->label)); | |
1d802e24 | 142 | strim(out->label); |
cced1dd4 MH |
143 | } |
144 | ||
145 | static void int_to_ext_kekl_pair(struct tape3592_kekl_pair *in, | |
146 | struct tape390_kekl_pair *out) | |
147 | { | |
148 | if (in->count == 0) { | |
149 | out->kekl[0].type = TAPE390_KEKL_TYPE_NONE; | |
150 | out->kekl[0].type_on_tape = TAPE390_KEKL_TYPE_NONE; | |
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 == 1) { | |
154 | int_to_ext_kekl(&in->kekl[0], &out->kekl[0]); | |
155 | out->kekl[1].type = TAPE390_KEKL_TYPE_NONE; | |
156 | out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE; | |
157 | } else if (in->count == 2) { | |
158 | int_to_ext_kekl(&in->kekl[0], &out->kekl[0]); | |
159 | int_to_ext_kekl(&in->kekl[1], &out->kekl[1]); | |
160 | } else { | |
161 | printk("Invalid KEKL number: %d\n", in->count); | |
162 | BUG(); | |
163 | } | |
164 | } | |
165 | ||
166 | static int check_ext_kekl(struct tape390_kekl *kekl) | |
167 | { | |
168 | if (kekl->type == TAPE390_KEKL_TYPE_NONE) | |
169 | goto invalid; | |
170 | if (kekl->type > TAPE390_KEKL_TYPE_HASH) | |
171 | goto invalid; | |
172 | if (kekl->type_on_tape == TAPE390_KEKL_TYPE_NONE) | |
173 | goto invalid; | |
174 | if (kekl->type_on_tape > TAPE390_KEKL_TYPE_HASH) | |
175 | goto invalid; | |
176 | if ((kekl->type == TAPE390_KEKL_TYPE_HASH) && | |
177 | (kekl->type_on_tape == TAPE390_KEKL_TYPE_LABEL)) | |
178 | goto invalid; | |
179 | ||
180 | return 0; | |
181 | invalid: | |
182 | return -EINVAL; | |
183 | } | |
184 | ||
185 | static int check_ext_kekl_pair(struct tape390_kekl_pair *kekls) | |
186 | { | |
187 | if (check_ext_kekl(&kekls->kekl[0])) | |
188 | goto invalid; | |
189 | if (check_ext_kekl(&kekls->kekl[1])) | |
190 | goto invalid; | |
191 | ||
192 | return 0; | |
193 | invalid: | |
194 | return -EINVAL; | |
195 | } | |
196 | ||
197 | /* | |
198 | * Query KEKLs | |
199 | */ | |
200 | static int tape_3592_kekl_query(struct tape_device *device, | |
201 | struct tape390_kekl_pair *ext_kekls) | |
202 | { | |
203 | struct tape_request *request; | |
204 | struct tape3592_kekl_query_order *order; | |
205 | struct tape3592_kekl_query_data *int_kekls; | |
206 | int rc; | |
207 | ||
208 | DBF_EVENT(6, "tape3592_kekl_query\n"); | |
209 | int_kekls = kmalloc(sizeof(*int_kekls), GFP_KERNEL|GFP_DMA); | |
210 | if (!int_kekls) | |
211 | return -ENOMEM; | |
212 | request = tape_alloc_request(2, sizeof(*order)); | |
213 | if (IS_ERR(request)) { | |
214 | rc = PTR_ERR(request); | |
215 | goto fail_malloc; | |
216 | } | |
217 | order = request->cpdata; | |
218 | memset(order,0,sizeof(*order)); | |
219 | order->code = 0xe2; | |
220 | order->max_count = 2; | |
221 | request->op = TO_KEKL_QUERY; | |
222 | tape_ccw_cc(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order); | |
223 | tape_ccw_end(request->cpaddr + 1, READ_SS_DATA, sizeof(*int_kekls), | |
224 | int_kekls); | |
225 | rc = tape_do_io(device, request); | |
226 | if (rc) | |
227 | goto fail_request; | |
228 | int_to_ext_kekl_pair(&int_kekls->kekls, ext_kekls); | |
229 | ||
230 | rc = 0; | |
231 | fail_request: | |
232 | tape_free_request(request); | |
233 | fail_malloc: | |
234 | kfree(int_kekls); | |
235 | return rc; | |
236 | } | |
237 | ||
238 | /* | |
239 | * IOCTL: Query KEKLs | |
240 | */ | |
241 | static int tape_3592_ioctl_kekl_query(struct tape_device *device, | |
242 | unsigned long arg) | |
243 | { | |
244 | int rc; | |
245 | struct tape390_kekl_pair *ext_kekls; | |
246 | ||
247 | DBF_EVENT(6, "tape_3592_ioctl_kekl_query\n"); | |
248 | if (!crypt_supported(device)) | |
249 | return -ENOSYS; | |
250 | if (!crypt_enabled(device)) | |
251 | return -EUNATCH; | |
252 | ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL); | |
253 | if (!ext_kekls) | |
254 | return -ENOMEM; | |
255 | rc = tape_3592_kekl_query(device, ext_kekls); | |
256 | if (rc != 0) | |
257 | goto fail; | |
258 | if (copy_to_user((char __user *) arg, ext_kekls, sizeof(*ext_kekls))) { | |
259 | rc = -EFAULT; | |
260 | goto fail; | |
261 | } | |
262 | rc = 0; | |
263 | fail: | |
264 | kfree(ext_kekls); | |
265 | return rc; | |
266 | } | |
267 | ||
268 | static int tape_3590_mttell(struct tape_device *device, int mt_count); | |
269 | ||
270 | /* | |
271 | * Set KEKLs | |
272 | */ | |
273 | static int tape_3592_kekl_set(struct tape_device *device, | |
274 | struct tape390_kekl_pair *ext_kekls) | |
275 | { | |
276 | struct tape_request *request; | |
277 | struct tape3592_kekl_set_order *order; | |
278 | ||
279 | DBF_EVENT(6, "tape3592_kekl_set\n"); | |
280 | if (check_ext_kekl_pair(ext_kekls)) { | |
281 | DBF_EVENT(6, "invalid kekls\n"); | |
282 | return -EINVAL; | |
283 | } | |
284 | if (tape_3590_mttell(device, 0) != 0) | |
285 | return -EBADSLT; | |
286 | request = tape_alloc_request(1, sizeof(*order)); | |
287 | if (IS_ERR(request)) | |
288 | return PTR_ERR(request); | |
289 | order = request->cpdata; | |
290 | memset(order, 0, sizeof(*order)); | |
291 | order->code = 0xe3; | |
292 | order->kekls.count = 2; | |
293 | ext_to_int_kekl(&ext_kekls->kekl[0], &order->kekls.kekl[0]); | |
294 | ext_to_int_kekl(&ext_kekls->kekl[1], &order->kekls.kekl[1]); | |
295 | request->op = TO_KEKL_SET; | |
296 | tape_ccw_end(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order); | |
297 | ||
298 | return tape_do_io_free(device, request); | |
299 | } | |
300 | ||
301 | /* | |
302 | * IOCTL: Set KEKLs | |
303 | */ | |
304 | static int tape_3592_ioctl_kekl_set(struct tape_device *device, | |
305 | unsigned long arg) | |
306 | { | |
307 | int rc; | |
308 | struct tape390_kekl_pair *ext_kekls; | |
309 | ||
310 | DBF_EVENT(6, "tape_3592_ioctl_kekl_set\n"); | |
311 | if (!crypt_supported(device)) | |
312 | return -ENOSYS; | |
313 | if (!crypt_enabled(device)) | |
314 | return -EUNATCH; | |
315 | ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL); | |
316 | if (!ext_kekls) | |
317 | return -ENOMEM; | |
318 | if (copy_from_user(ext_kekls, (char __user *)arg, sizeof(*ext_kekls))) { | |
319 | rc = -EFAULT; | |
320 | goto out; | |
321 | } | |
322 | rc = tape_3592_kekl_set(device, ext_kekls); | |
323 | out: | |
324 | kfree(ext_kekls); | |
325 | return rc; | |
326 | } | |
327 | ||
328 | /* | |
329 | * Enable encryption | |
330 | */ | |
0c2bd9b2 | 331 | static struct tape_request *__tape_3592_enable_crypt(struct tape_device *device) |
cced1dd4 MH |
332 | { |
333 | struct tape_request *request; | |
334 | char *data; | |
335 | ||
336 | DBF_EVENT(6, "tape_3592_enable_crypt\n"); | |
337 | if (!crypt_supported(device)) | |
0c2bd9b2 | 338 | return ERR_PTR(-ENOSYS); |
cced1dd4 MH |
339 | request = tape_alloc_request(2, 72); |
340 | if (IS_ERR(request)) | |
0c2bd9b2 | 341 | return request; |
cced1dd4 MH |
342 | data = request->cpdata; |
343 | memset(data,0,72); | |
344 | ||
345 | data[0] = 0x05; | |
346 | data[36 + 0] = 0x03; | |
347 | data[36 + 1] = 0x03; | |
348 | data[36 + 4] = 0x40; | |
349 | data[36 + 6] = 0x01; | |
350 | data[36 + 14] = 0x2f; | |
351 | data[36 + 18] = 0xc3; | |
352 | data[36 + 35] = 0x72; | |
353 | request->op = TO_CRYPT_ON; | |
354 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); | |
355 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); | |
0c2bd9b2 MS |
356 | return request; |
357 | } | |
358 | ||
359 | static int tape_3592_enable_crypt(struct tape_device *device) | |
360 | { | |
361 | struct tape_request *request; | |
362 | ||
363 | request = __tape_3592_enable_crypt(device); | |
364 | if (IS_ERR(request)) | |
365 | return PTR_ERR(request); | |
cced1dd4 MH |
366 | return tape_do_io_free(device, request); |
367 | } | |
368 | ||
0c2bd9b2 MS |
369 | static void tape_3592_enable_crypt_async(struct tape_device *device) |
370 | { | |
371 | struct tape_request *request; | |
372 | ||
373 | request = __tape_3592_enable_crypt(device); | |
374 | if (!IS_ERR(request)) | |
375 | tape_do_io_async_free(device, request); | |
376 | } | |
377 | ||
cced1dd4 MH |
378 | /* |
379 | * Disable encryption | |
380 | */ | |
0c2bd9b2 | 381 | static struct tape_request *__tape_3592_disable_crypt(struct tape_device *device) |
cced1dd4 MH |
382 | { |
383 | struct tape_request *request; | |
384 | char *data; | |
385 | ||
386 | DBF_EVENT(6, "tape_3592_disable_crypt\n"); | |
387 | if (!crypt_supported(device)) | |
0c2bd9b2 | 388 | return ERR_PTR(-ENOSYS); |
cced1dd4 MH |
389 | request = tape_alloc_request(2, 72); |
390 | if (IS_ERR(request)) | |
0c2bd9b2 | 391 | return request; |
cced1dd4 MH |
392 | data = request->cpdata; |
393 | memset(data,0,72); | |
394 | ||
395 | data[0] = 0x05; | |
396 | data[36 + 0] = 0x03; | |
397 | data[36 + 1] = 0x03; | |
398 | data[36 + 35] = 0x32; | |
399 | ||
400 | request->op = TO_CRYPT_OFF; | |
401 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); | |
402 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); | |
403 | ||
0c2bd9b2 MS |
404 | return request; |
405 | } | |
406 | ||
407 | static int tape_3592_disable_crypt(struct tape_device *device) | |
408 | { | |
409 | struct tape_request *request; | |
410 | ||
411 | request = __tape_3592_disable_crypt(device); | |
412 | if (IS_ERR(request)) | |
413 | return PTR_ERR(request); | |
cced1dd4 MH |
414 | return tape_do_io_free(device, request); |
415 | } | |
416 | ||
0c2bd9b2 MS |
417 | static void tape_3592_disable_crypt_async(struct tape_device *device) |
418 | { | |
419 | struct tape_request *request; | |
420 | ||
421 | request = __tape_3592_disable_crypt(device); | |
422 | if (!IS_ERR(request)) | |
423 | tape_do_io_async_free(device, request); | |
424 | } | |
425 | ||
cced1dd4 MH |
426 | /* |
427 | * IOCTL: Set encryption status | |
428 | */ | |
429 | static int tape_3592_ioctl_crypt_set(struct tape_device *device, | |
430 | unsigned long arg) | |
431 | { | |
432 | struct tape390_crypt_info info; | |
433 | ||
434 | DBF_EVENT(6, "tape_3592_ioctl_crypt_set\n"); | |
435 | if (!crypt_supported(device)) | |
436 | return -ENOSYS; | |
437 | if (copy_from_user(&info, (char __user *)arg, sizeof(info))) | |
438 | return -EFAULT; | |
439 | if (info.status & ~TAPE390_CRYPT_ON_MASK) | |
440 | return -EINVAL; | |
441 | if (info.status & TAPE390_CRYPT_ON_MASK) | |
442 | return tape_3592_enable_crypt(device); | |
443 | else | |
444 | return tape_3592_disable_crypt(device); | |
445 | } | |
446 | ||
447 | static int tape_3590_sense_medium(struct tape_device *device); | |
448 | ||
449 | /* | |
450 | * IOCTL: Query enryption status | |
451 | */ | |
452 | static int tape_3592_ioctl_crypt_query(struct tape_device *device, | |
453 | unsigned long arg) | |
454 | { | |
455 | DBF_EVENT(6, "tape_3592_ioctl_crypt_query\n"); | |
456 | if (!crypt_supported(device)) | |
457 | return -ENOSYS; | |
458 | tape_3590_sense_medium(device); | |
459 | if (copy_to_user((char __user *) arg, &TAPE_3590_CRYPT_INFO(device), | |
460 | sizeof(TAPE_3590_CRYPT_INFO(device)))) | |
461 | return -EFAULT; | |
462 | else | |
463 | return 0; | |
464 | } | |
465 | ||
b6cba4ee SB |
466 | /* |
467 | * 3590 IOCTL Overload | |
468 | */ | |
469 | static int | |
470 | tape_3590_ioctl(struct tape_device *device, unsigned int cmd, unsigned long arg) | |
471 | { | |
472 | switch (cmd) { | |
473 | case TAPE390_DISPLAY: { | |
474 | struct display_struct disp; | |
475 | ||
476 | if (copy_from_user(&disp, (char __user *) arg, sizeof(disp))) | |
477 | return -EFAULT; | |
478 | ||
479 | return tape_std_display(device, &disp); | |
480 | } | |
cced1dd4 MH |
481 | case TAPE390_KEKL_SET: |
482 | return tape_3592_ioctl_kekl_set(device, arg); | |
483 | case TAPE390_KEKL_QUERY: | |
484 | return tape_3592_ioctl_kekl_query(device, arg); | |
485 | case TAPE390_CRYPT_SET: | |
486 | return tape_3592_ioctl_crypt_set(device, arg); | |
487 | case TAPE390_CRYPT_QUERY: | |
488 | return tape_3592_ioctl_crypt_query(device, arg); | |
b6cba4ee SB |
489 | default: |
490 | return -EINVAL; /* no additional ioctls */ | |
491 | } | |
492 | } | |
493 | ||
494 | /* | |
495 | * SENSE Medium: Get Sense data about medium state | |
496 | */ | |
0c2bd9b2 | 497 | static int tape_3590_sense_medium(struct tape_device *device) |
b6cba4ee SB |
498 | { |
499 | struct tape_request *request; | |
500 | ||
501 | request = tape_alloc_request(1, 128); | |
502 | if (IS_ERR(request)) | |
503 | return PTR_ERR(request); | |
504 | request->op = TO_MSEN; | |
505 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); | |
506 | return tape_do_io_free(device, request); | |
507 | } | |
508 | ||
0c2bd9b2 MS |
509 | static void tape_3590_sense_medium_async(struct tape_device *device) |
510 | { | |
511 | struct tape_request *request; | |
512 | ||
513 | request = tape_alloc_request(1, 128); | |
514 | if (IS_ERR(request)) | |
515 | return; | |
516 | request->op = TO_MSEN; | |
517 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); | |
518 | tape_do_io_async_free(device, request); | |
519 | } | |
520 | ||
b6cba4ee SB |
521 | /* |
522 | * MTTELL: Tell block. Return the number of block relative to current file. | |
523 | */ | |
524 | static int | |
525 | tape_3590_mttell(struct tape_device *device, int mt_count) | |
526 | { | |
527 | __u64 block_id; | |
528 | int rc; | |
529 | ||
530 | rc = tape_std_read_block_id(device, &block_id); | |
531 | if (rc) | |
532 | return rc; | |
533 | return block_id >> 32; | |
534 | } | |
535 | ||
536 | /* | |
537 | * MTSEEK: seek to the specified block. | |
538 | */ | |
539 | static int | |
540 | tape_3590_mtseek(struct tape_device *device, int count) | |
541 | { | |
542 | struct tape_request *request; | |
543 | ||
544 | DBF_EVENT(6, "xsee id: %x\n", count); | |
545 | request = tape_alloc_request(3, 4); | |
546 | if (IS_ERR(request)) | |
547 | return PTR_ERR(request); | |
548 | request->op = TO_LBL; | |
549 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); | |
550 | *(__u32 *) request->cpdata = count; | |
551 | tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); | |
552 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); | |
553 | return tape_do_io_free(device, request); | |
554 | } | |
555 | ||
556 | /* | |
557 | * Read Opposite Error Recovery Function: | |
558 | * Used, when Read Forward does not work | |
559 | */ | |
560 | static void | |
561 | tape_3590_read_opposite(struct tape_device *device, | |
562 | struct tape_request *request) | |
563 | { | |
564 | struct tape_3590_disc_data *data; | |
565 | ||
566 | /* | |
567 | * We have allocated 4 ccws in tape_std_read, so we can now | |
568 | * transform the request to a read backward, followed by a | |
569 | * forward space block. | |
570 | */ | |
571 | request->op = TO_RBA; | |
572 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); | |
573 | data = device->discdata; | |
574 | tape_ccw_cc_idal(request->cpaddr + 1, data->read_back_op, | |
575 | device->char_data.idal_buf); | |
576 | tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL); | |
577 | tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL); | |
578 | DBF_EVENT(6, "xrop ccwg\n"); | |
579 | } | |
580 | ||
581 | /* | |
582 | * Read Attention Msg | |
583 | * This should be done after an interrupt with attention bit (0x80) | |
584 | * in device state. | |
585 | * | |
586 | * After a "read attention message" request there are two possible | |
587 | * results: | |
588 | * | |
589 | * 1. A unit check is presented, when attention sense is present (e.g. when | |
590 | * a medium has been unloaded). The attention sense comes then | |
591 | * together with the unit check. The recovery action is either "retry" | |
592 | * (in case there is an attention message pending) or "permanent error". | |
593 | * | |
594 | * 2. The attention msg is written to the "read subsystem data" buffer. | |
595 | * In this case we probably should print it to the console. | |
596 | */ | |
0c2bd9b2 | 597 | static void tape_3590_read_attmsg_async(struct tape_device *device) |
b6cba4ee SB |
598 | { |
599 | struct tape_request *request; | |
600 | char *buf; | |
601 | ||
602 | request = tape_alloc_request(3, 4096); | |
603 | if (IS_ERR(request)) | |
0c2bd9b2 | 604 | return; |
b6cba4ee SB |
605 | request->op = TO_READ_ATTMSG; |
606 | buf = request->cpdata; | |
607 | buf[0] = PREP_RD_SS_DATA; | |
608 | buf[6] = RD_ATTMSG; /* read att msg */ | |
609 | tape_ccw_cc(request->cpaddr, PERFORM_SS_FUNC, 12, buf); | |
610 | tape_ccw_cc(request->cpaddr + 1, READ_SS_DATA, 4096 - 12, buf + 12); | |
611 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); | |
0c2bd9b2 | 612 | tape_do_io_async_free(device, request); |
b6cba4ee SB |
613 | } |
614 | ||
615 | /* | |
616 | * These functions are used to schedule follow-up actions from within an | |
617 | * interrupt context (like unsolicited interrupts). | |
0c2bd9b2 MS |
618 | * Note: the work handler is called by the system work queue. The tape |
619 | * commands started by the handler need to be asynchrounous, otherwise | |
620 | * a deadlock can occur e.g. in case of a deferred cc=1 (see __tape_do_irq). | |
b6cba4ee | 621 | */ |
2cc924b8 SB |
622 | struct work_handler_data { |
623 | struct tape_device *device; | |
624 | enum tape_op op; | |
625 | struct work_struct work; | |
626 | }; | |
627 | ||
b6cba4ee | 628 | static void |
c1637532 | 629 | tape_3590_work_handler(struct work_struct *work) |
b6cba4ee | 630 | { |
c1637532 MS |
631 | struct work_handler_data *p = |
632 | container_of(work, struct work_handler_data, work); | |
b6cba4ee SB |
633 | |
634 | switch (p->op) { | |
635 | case TO_MSEN: | |
0c2bd9b2 | 636 | tape_3590_sense_medium_async(p->device); |
b6cba4ee SB |
637 | break; |
638 | case TO_READ_ATTMSG: | |
0c2bd9b2 | 639 | tape_3590_read_attmsg_async(p->device); |
b6cba4ee | 640 | break; |
cced1dd4 | 641 | case TO_CRYPT_ON: |
0c2bd9b2 | 642 | tape_3592_enable_crypt_async(p->device); |
cced1dd4 MH |
643 | break; |
644 | case TO_CRYPT_OFF: | |
0c2bd9b2 | 645 | tape_3592_disable_crypt_async(p->device); |
cced1dd4 | 646 | break; |
b6cba4ee SB |
647 | default: |
648 | DBF_EVENT(3, "T3590: work handler undefined for " | |
649 | "operation 0x%02x\n", p->op); | |
650 | } | |
651 | tape_put_device(p->device); | |
652 | kfree(p); | |
653 | } | |
654 | ||
655 | static int | |
656 | tape_3590_schedule_work(struct tape_device *device, enum tape_op op) | |
657 | { | |
2cc924b8 | 658 | struct work_handler_data *p; |
b6cba4ee SB |
659 | |
660 | if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL) | |
661 | return -ENOMEM; | |
662 | ||
c1637532 | 663 | INIT_WORK(&p->work, tape_3590_work_handler); |
b6cba4ee | 664 | |
8fd138c3 | 665 | p->device = tape_get_device(device); |
b6cba4ee SB |
666 | p->op = op; |
667 | ||
6dca467a | 668 | queue_work(tape_3590_wq, &p->work); |
b6cba4ee SB |
669 | return 0; |
670 | } | |
671 | ||
cced1dd4 MH |
672 | static void tape_3590_med_state_set(struct tape_device *device, |
673 | struct tape_3590_med_sense *sense) | |
674 | { | |
675 | struct tape390_crypt_info *c_info; | |
676 | ||
677 | c_info = &TAPE_3590_CRYPT_INFO(device); | |
678 | ||
1b9fd76e MH |
679 | DBF_EVENT(6, "medium state: %x:%x\n", sense->macst, sense->masst); |
680 | switch (sense->macst) { | |
681 | case 0x04: | |
682 | case 0x05: | |
683 | case 0x06: | |
cced1dd4 MH |
684 | tape_med_state_set(device, MS_UNLOADED); |
685 | TAPE_3590_CRYPT_INFO(device).medium_status = 0; | |
686 | return; | |
1b9fd76e MH |
687 | case 0x08: |
688 | case 0x09: | |
689 | tape_med_state_set(device, MS_LOADED); | |
690 | break; | |
691 | default: | |
692 | tape_med_state_set(device, MS_UNKNOWN); | |
cced1dd4 MH |
693 | return; |
694 | } | |
cced1dd4 MH |
695 | c_info->medium_status |= TAPE390_MEDIUM_LOADED_MASK; |
696 | if (sense->flags & MSENSE_CRYPT_MASK) { | |
ab640db0 | 697 | DBF_EVENT(6, "Medium is encrypted (%04x)\n", sense->flags); |
cced1dd4 MH |
698 | c_info->medium_status |= TAPE390_MEDIUM_ENCRYPTED_MASK; |
699 | } else { | |
700 | DBF_EVENT(6, "Medium is not encrypted %04x\n", sense->flags); | |
701 | c_info->medium_status &= ~TAPE390_MEDIUM_ENCRYPTED_MASK; | |
702 | } | |
703 | } | |
704 | ||
b6cba4ee SB |
705 | /* |
706 | * The done handler is called at device/channel end and wakes up the sleeping | |
707 | * process | |
708 | */ | |
709 | static int | |
710 | tape_3590_done(struct tape_device *device, struct tape_request *request) | |
711 | { | |
b6cba4ee SB |
712 | |
713 | DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]); | |
714 | ||
715 | switch (request->op) { | |
716 | case TO_BSB: | |
717 | case TO_BSF: | |
718 | case TO_DSE: | |
719 | case TO_FSB: | |
720 | case TO_FSF: | |
721 | case TO_LBL: | |
722 | case TO_RFO: | |
723 | case TO_RBA: | |
724 | case TO_REW: | |
725 | case TO_WRI: | |
726 | case TO_WTM: | |
727 | case TO_BLOCK: | |
728 | case TO_LOAD: | |
729 | tape_med_state_set(device, MS_LOADED); | |
730 | break; | |
731 | case TO_RUN: | |
732 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 733 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
734 | break; |
735 | case TO_MSEN: | |
cced1dd4 MH |
736 | tape_3590_med_state_set(device, request->cpdata); |
737 | break; | |
738 | case TO_CRYPT_ON: | |
739 | TAPE_3590_CRYPT_INFO(device).status | |
740 | |= TAPE390_CRYPT_ON_MASK; | |
741 | *(device->modeset_byte) |= 0x03; | |
742 | break; | |
743 | case TO_CRYPT_OFF: | |
744 | TAPE_3590_CRYPT_INFO(device).status | |
745 | &= ~TAPE390_CRYPT_ON_MASK; | |
746 | *(device->modeset_byte) &= ~0x03; | |
b6cba4ee SB |
747 | break; |
748 | case TO_RBI: /* RBI seems to succeed even without medium loaded. */ | |
749 | case TO_NOP: /* Same to NOP. */ | |
750 | case TO_READ_CONFIG: | |
751 | case TO_READ_ATTMSG: | |
752 | case TO_DIS: | |
753 | case TO_ASSIGN: | |
754 | case TO_UNASSIGN: | |
b6cba4ee | 755 | case TO_SIZE: |
cced1dd4 MH |
756 | case TO_KEKL_SET: |
757 | case TO_KEKL_QUERY: | |
e2963062 | 758 | case TO_RDC: |
b6cba4ee SB |
759 | break; |
760 | } | |
761 | return TAPE_IO_SUCCESS; | |
762 | } | |
763 | ||
764 | /* | |
eef35c2d | 765 | * This function is called, when error recovery was successful |
b6cba4ee SB |
766 | */ |
767 | static inline int | |
768 | tape_3590_erp_succeded(struct tape_device *device, struct tape_request *request) | |
769 | { | |
73ac36ea | 770 | DBF_EVENT(3, "Error Recovery successful for %s\n", |
b6cba4ee SB |
771 | tape_op_verbose[request->op]); |
772 | return tape_3590_done(device, request); | |
773 | } | |
774 | ||
775 | /* | |
eef35c2d | 776 | * This function is called, when error recovery was not successful |
b6cba4ee SB |
777 | */ |
778 | static inline int | |
779 | tape_3590_erp_failed(struct tape_device *device, struct tape_request *request, | |
780 | struct irb *irb, int rc) | |
781 | { | |
782 | DBF_EVENT(3, "Error Recovery failed for %s\n", | |
783 | tape_op_verbose[request->op]); | |
784 | tape_dump_sense_dbf(device, request, irb); | |
785 | return rc; | |
786 | } | |
787 | ||
788 | /* | |
789 | * Error Recovery do retry | |
790 | */ | |
791 | static inline int | |
792 | tape_3590_erp_retry(struct tape_device *device, struct tape_request *request, | |
793 | struct irb *irb) | |
794 | { | |
795 | DBF_EVENT(2, "Retry: %s\n", tape_op_verbose[request->op]); | |
796 | tape_dump_sense_dbf(device, request, irb); | |
797 | return TAPE_IO_RETRY; | |
798 | } | |
799 | ||
800 | /* | |
801 | * Handle unsolicited interrupts | |
802 | */ | |
803 | static int | |
804 | tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb) | |
805 | { | |
23d805b6 | 806 | if (irb->scsw.cmd.dstat == DEV_STAT_CHN_END) |
b6cba4ee SB |
807 | /* Probably result of halt ssch */ |
808 | return TAPE_IO_PENDING; | |
23d805b6 | 809 | else if (irb->scsw.cmd.dstat == 0x85) |
1b9fd76e MH |
810 | /* Device Ready */ |
811 | DBF_EVENT(3, "unsol.irq! tape ready: %08x\n", device->cdev_id); | |
23d805b6 | 812 | else if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
b6cba4ee | 813 | tape_3590_schedule_work(device, TO_READ_ATTMSG); |
1b9fd76e | 814 | } else { |
b6cba4ee | 815 | DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id); |
ab640db0 | 816 | tape_dump_sense_dbf(device, NULL, irb); |
b6cba4ee | 817 | } |
1b9fd76e MH |
818 | /* check medium state */ |
819 | tape_3590_schedule_work(device, TO_MSEN); | |
b6cba4ee SB |
820 | return TAPE_IO_SUCCESS; |
821 | } | |
822 | ||
823 | /* | |
824 | * Basic Recovery routine | |
825 | */ | |
826 | static int | |
827 | tape_3590_erp_basic(struct tape_device *device, struct tape_request *request, | |
828 | struct irb *irb, int rc) | |
829 | { | |
830 | struct tape_3590_sense *sense; | |
831 | ||
832 | sense = (struct tape_3590_sense *) irb->ecw; | |
833 | ||
834 | switch (sense->bra) { | |
835 | case SENSE_BRA_PER: | |
836 | return tape_3590_erp_failed(device, request, irb, rc); | |
837 | case SENSE_BRA_CONT: | |
838 | return tape_3590_erp_succeded(device, request); | |
839 | case SENSE_BRA_RE: | |
840 | return tape_3590_erp_retry(device, request, irb); | |
841 | case SENSE_BRA_DRE: | |
842 | return tape_3590_erp_failed(device, request, irb, rc); | |
843 | default: | |
b6cba4ee SB |
844 | BUG(); |
845 | return TAPE_IO_STOP; | |
846 | } | |
847 | } | |
848 | ||
849 | /* | |
850 | * RDL: Read Device (buffered) log | |
851 | */ | |
852 | static int | |
853 | tape_3590_erp_read_buf_log(struct tape_device *device, | |
854 | struct tape_request *request, struct irb *irb) | |
855 | { | |
856 | /* | |
857 | * We just do the basic error recovery at the moment (retry). | |
858 | * Perhaps in the future, we read the log and dump it somewhere... | |
859 | */ | |
860 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
861 | } | |
862 | ||
863 | /* | |
864 | * SWAP: Swap Devices | |
865 | */ | |
866 | static int | |
867 | tape_3590_erp_swap(struct tape_device *device, struct tape_request *request, | |
868 | struct irb *irb) | |
869 | { | |
870 | /* | |
871 | * This error recovery should swap the tapes | |
872 | * if the original has a problem. The operation | |
873 | * should proceed with the new tape... this | |
874 | * should probably be done in user space! | |
875 | */ | |
ab640db0 CO |
876 | dev_warn (&device->cdev->dev, "The tape medium must be loaded into a " |
877 | "different tape unit\n"); | |
b6cba4ee SB |
878 | return tape_3590_erp_basic(device, request, irb, -EIO); |
879 | } | |
880 | ||
881 | /* | |
882 | * LBY: Long Busy | |
883 | */ | |
884 | static int | |
885 | tape_3590_erp_long_busy(struct tape_device *device, | |
886 | struct tape_request *request, struct irb *irb) | |
887 | { | |
cced1dd4 MH |
888 | DBF_EVENT(6, "Device is busy\n"); |
889 | return TAPE_IO_LONG_BUSY; | |
b6cba4ee SB |
890 | } |
891 | ||
892 | /* | |
893 | * SPI: Special Intercept | |
894 | */ | |
895 | static int | |
896 | tape_3590_erp_special_interrupt(struct tape_device *device, | |
897 | struct tape_request *request, struct irb *irb) | |
898 | { | |
899 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
900 | } | |
901 | ||
902 | /* | |
903 | * RDA: Read Alternate | |
904 | */ | |
905 | static int | |
906 | tape_3590_erp_read_alternate(struct tape_device *device, | |
907 | struct tape_request *request, struct irb *irb) | |
908 | { | |
909 | struct tape_3590_disc_data *data; | |
910 | ||
911 | /* | |
912 | * The issued Read Backward or Read Previous command is not | |
913 | * supported by the device | |
914 | * The recovery action should be to issue another command: | |
915 | * Read Revious: if Read Backward is not supported | |
916 | * Read Backward: if Read Previous is not supported | |
917 | */ | |
918 | data = device->discdata; | |
919 | if (data->read_back_op == READ_PREVIOUS) { | |
920 | DBF_EVENT(2, "(%08x): No support for READ_PREVIOUS command\n", | |
921 | device->cdev_id); | |
922 | data->read_back_op = READ_BACKWARD; | |
923 | } else { | |
924 | DBF_EVENT(2, "(%08x): No support for READ_BACKWARD command\n", | |
925 | device->cdev_id); | |
926 | data->read_back_op = READ_PREVIOUS; | |
927 | } | |
928 | tape_3590_read_opposite(device, request); | |
929 | return tape_3590_erp_retry(device, request, irb); | |
930 | } | |
931 | ||
932 | /* | |
933 | * Error Recovery read opposite | |
934 | */ | |
935 | static int | |
936 | tape_3590_erp_read_opposite(struct tape_device *device, | |
937 | struct tape_request *request, struct irb *irb) | |
938 | { | |
939 | switch (request->op) { | |
940 | case TO_RFO: | |
941 | /* | |
942 | * We did read forward, but the data could not be read. | |
943 | * We will read backward and then skip forward again. | |
944 | */ | |
945 | tape_3590_read_opposite(device, request); | |
946 | return tape_3590_erp_retry(device, request, irb); | |
947 | case TO_RBA: | |
948 | /* We tried to read forward and backward, but hat no success */ | |
949 | return tape_3590_erp_failed(device, request, irb, -EIO); | |
950 | break; | |
951 | default: | |
b6cba4ee SB |
952 | return tape_3590_erp_failed(device, request, irb, -EIO); |
953 | } | |
954 | } | |
955 | ||
956 | /* | |
957 | * Print an MIM (Media Information Message) (message code f0) | |
958 | */ | |
959 | static void | |
960 | tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb) | |
961 | { | |
962 | struct tape_3590_sense *sense; | |
ab640db0 CO |
963 | char *exception, *service; |
964 | ||
965 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
966 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
967 | ||
968 | if (!exception || !service) | |
969 | goto out_nomem; | |
b6cba4ee SB |
970 | |
971 | sense = (struct tape_3590_sense *) irb->ecw; | |
972 | /* Exception Message */ | |
973 | switch (sense->fmt.f70.emc) { | |
974 | case 0x02: | |
ab640db0 | 975 | snprintf(exception, BUFSIZE, "Data degraded"); |
b6cba4ee SB |
976 | break; |
977 | case 0x03: | |
ab640db0 CO |
978 | snprintf(exception, BUFSIZE, "Data degraded in partion %i", |
979 | sense->fmt.f70.mp); | |
b6cba4ee SB |
980 | break; |
981 | case 0x04: | |
ab640db0 | 982 | snprintf(exception, BUFSIZE, "Medium degraded"); |
b6cba4ee SB |
983 | break; |
984 | case 0x05: | |
ab640db0 CO |
985 | snprintf(exception, BUFSIZE, "Medium degraded in partition %i", |
986 | sense->fmt.f70.mp); | |
b6cba4ee SB |
987 | break; |
988 | case 0x06: | |
ab640db0 | 989 | snprintf(exception, BUFSIZE, "Block 0 Error"); |
b6cba4ee SB |
990 | break; |
991 | case 0x07: | |
ab640db0 CO |
992 | snprintf(exception, BUFSIZE, "Medium Exception 0x%02x", |
993 | sense->fmt.f70.md); | |
b6cba4ee SB |
994 | break; |
995 | default: | |
ab640db0 CO |
996 | snprintf(exception, BUFSIZE, "0x%02x", |
997 | sense->fmt.f70.emc); | |
b6cba4ee SB |
998 | break; |
999 | } | |
1000 | /* Service Message */ | |
1001 | switch (sense->fmt.f70.smc) { | |
1002 | case 0x02: | |
ab640db0 CO |
1003 | snprintf(service, BUFSIZE, "Reference Media maintenance " |
1004 | "procedure %i", sense->fmt.f70.md); | |
b6cba4ee SB |
1005 | break; |
1006 | default: | |
ab640db0 CO |
1007 | snprintf(service, BUFSIZE, "0x%02x", |
1008 | sense->fmt.f70.smc); | |
b6cba4ee SB |
1009 | break; |
1010 | } | |
ab640db0 CO |
1011 | |
1012 | dev_warn (&device->cdev->dev, "Tape media information: exception %s, " | |
1013 | "service %s\n", exception, service); | |
1014 | ||
1015 | out_nomem: | |
1016 | kfree(exception); | |
1017 | kfree(service); | |
b6cba4ee SB |
1018 | } |
1019 | ||
1020 | /* | |
1021 | * Print an I/O Subsystem Service Information Message (message code f1) | |
1022 | */ | |
1023 | static void | |
1024 | tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb) | |
1025 | { | |
1026 | struct tape_3590_sense *sense; | |
ab640db0 CO |
1027 | char *exception, *service; |
1028 | ||
1029 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1030 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1031 | ||
1032 | if (!exception || !service) | |
1033 | goto out_nomem; | |
b6cba4ee SB |
1034 | |
1035 | sense = (struct tape_3590_sense *) irb->ecw; | |
1036 | /* Exception Message */ | |
1037 | switch (sense->fmt.f71.emc) { | |
1038 | case 0x01: | |
ab640db0 | 1039 | snprintf(exception, BUFSIZE, "Effect of failure is unknown"); |
b6cba4ee SB |
1040 | break; |
1041 | case 0x02: | |
ab640db0 CO |
1042 | snprintf(exception, BUFSIZE, "CU Exception - no performance " |
1043 | "impact"); | |
b6cba4ee SB |
1044 | break; |
1045 | case 0x03: | |
ab640db0 CO |
1046 | snprintf(exception, BUFSIZE, "CU Exception on channel " |
1047 | "interface 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1048 | break; |
1049 | case 0x04: | |
ab640db0 CO |
1050 | snprintf(exception, BUFSIZE, "CU Exception on device path " |
1051 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1052 | break; |
1053 | case 0x05: | |
ab640db0 CO |
1054 | snprintf(exception, BUFSIZE, "CU Exception on library path " |
1055 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1056 | break; |
1057 | case 0x06: | |
ab640db0 CO |
1058 | snprintf(exception, BUFSIZE, "CU Exception on node 0x%02x", |
1059 | sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1060 | break; |
1061 | case 0x07: | |
ab640db0 CO |
1062 | snprintf(exception, BUFSIZE, "CU Exception on partition " |
1063 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1064 | break; |
1065 | default: | |
ab640db0 CO |
1066 | snprintf(exception, BUFSIZE, "0x%02x", |
1067 | sense->fmt.f71.emc); | |
b6cba4ee SB |
1068 | } |
1069 | /* Service Message */ | |
1070 | switch (sense->fmt.f71.smc) { | |
1071 | case 0x01: | |
ab640db0 | 1072 | snprintf(service, BUFSIZE, "Repair impact is unknown"); |
b6cba4ee SB |
1073 | break; |
1074 | case 0x02: | |
ab640db0 CO |
1075 | snprintf(service, BUFSIZE, "Repair will not impact cu " |
1076 | "performance"); | |
b6cba4ee SB |
1077 | break; |
1078 | case 0x03: | |
1079 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1080 | snprintf(service, BUFSIZE, "Repair will disable node " |
1081 | "0x%x on CU", sense->fmt.f71.md[1]); | |
b6cba4ee | 1082 | else |
ab640db0 CO |
1083 | snprintf(service, BUFSIZE, "Repair will disable " |
1084 | "nodes (0x%x-0x%x) on CU", sense->fmt.f71.md[1], | |
1085 | sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1086 | break; |
1087 | case 0x04: | |
1088 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1089 | snprintf(service, BUFSIZE, "Repair will disable " |
1090 | "channel path 0x%x on CU", | |
1091 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1092 | else |
6774def6 | 1093 | snprintf(service, BUFSIZE, "Repair will disable channel" |
ab640db0 CO |
1094 | " paths (0x%x-0x%x) on CU", |
1095 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1096 | break; |
1097 | case 0x05: | |
1098 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1099 | snprintf(service, BUFSIZE, "Repair will disable device" |
1100 | " path 0x%x on CU", sense->fmt.f71.md[1]); | |
b6cba4ee | 1101 | else |
ab640db0 CO |
1102 | snprintf(service, BUFSIZE, "Repair will disable device" |
1103 | " paths (0x%x-0x%x) on CU", | |
1104 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1105 | break; |
1106 | case 0x06: | |
1107 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1108 | snprintf(service, BUFSIZE, "Repair will disable " |
1109 | "library path 0x%x on CU", | |
1110 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1111 | else |
ab640db0 CO |
1112 | snprintf(service, BUFSIZE, "Repair will disable " |
1113 | "library paths (0x%x-0x%x) on CU", | |
1114 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1115 | break; |
1116 | case 0x07: | |
ab640db0 | 1117 | snprintf(service, BUFSIZE, "Repair will disable access to CU"); |
b6cba4ee SB |
1118 | break; |
1119 | default: | |
ab640db0 CO |
1120 | snprintf(service, BUFSIZE, "0x%02x", |
1121 | sense->fmt.f71.smc); | |
b6cba4ee | 1122 | } |
ab640db0 CO |
1123 | |
1124 | dev_warn (&device->cdev->dev, "I/O subsystem information: exception" | |
1125 | " %s, service %s\n", exception, service); | |
1126 | out_nomem: | |
1127 | kfree(exception); | |
1128 | kfree(service); | |
b6cba4ee SB |
1129 | } |
1130 | ||
1131 | /* | |
1132 | * Print an Device Subsystem Service Information Message (message code f2) | |
1133 | */ | |
1134 | static void | |
1135 | tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb) | |
1136 | { | |
1137 | struct tape_3590_sense *sense; | |
ab640db0 CO |
1138 | char *exception, *service; |
1139 | ||
1140 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1141 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1142 | ||
1143 | if (!exception || !service) | |
1144 | goto out_nomem; | |
b6cba4ee SB |
1145 | |
1146 | sense = (struct tape_3590_sense *) irb->ecw; | |
1147 | /* Exception Message */ | |
1148 | switch (sense->fmt.f71.emc) { | |
1149 | case 0x01: | |
ab640db0 | 1150 | snprintf(exception, BUFSIZE, "Effect of failure is unknown"); |
b6cba4ee SB |
1151 | break; |
1152 | case 0x02: | |
ab640db0 CO |
1153 | snprintf(exception, BUFSIZE, "DV Exception - no performance" |
1154 | " impact"); | |
b6cba4ee SB |
1155 | break; |
1156 | case 0x03: | |
ab640db0 CO |
1157 | snprintf(exception, BUFSIZE, "DV Exception on channel " |
1158 | "interface 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1159 | break; |
1160 | case 0x04: | |
ab640db0 CO |
1161 | snprintf(exception, BUFSIZE, "DV Exception on loader 0x%02x", |
1162 | sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1163 | break; |
1164 | case 0x05: | |
ab640db0 CO |
1165 | snprintf(exception, BUFSIZE, "DV Exception on message display" |
1166 | " 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1167 | break; |
1168 | case 0x06: | |
ab640db0 | 1169 | snprintf(exception, BUFSIZE, "DV Exception in tape path"); |
b6cba4ee SB |
1170 | break; |
1171 | case 0x07: | |
ab640db0 | 1172 | snprintf(exception, BUFSIZE, "DV Exception in drive"); |
b6cba4ee SB |
1173 | break; |
1174 | default: | |
ab640db0 CO |
1175 | snprintf(exception, BUFSIZE, "0x%02x", |
1176 | sense->fmt.f71.emc); | |
b6cba4ee SB |
1177 | } |
1178 | /* Service Message */ | |
1179 | switch (sense->fmt.f71.smc) { | |
1180 | case 0x01: | |
ab640db0 | 1181 | snprintf(service, BUFSIZE, "Repair impact is unknown"); |
b6cba4ee SB |
1182 | break; |
1183 | case 0x02: | |
ab640db0 CO |
1184 | snprintf(service, BUFSIZE, "Repair will not impact device " |
1185 | "performance"); | |
b6cba4ee SB |
1186 | break; |
1187 | case 0x03: | |
1188 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1189 | snprintf(service, BUFSIZE, "Repair will disable " |
1190 | "channel path 0x%x on DV", | |
1191 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1192 | else |
ab640db0 CO |
1193 | snprintf(service, BUFSIZE, "Repair will disable " |
1194 | "channel path (0x%x-0x%x) on DV", | |
1195 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1196 | break; |
1197 | case 0x04: | |
1198 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1199 | snprintf(service, BUFSIZE, "Repair will disable " |
1200 | "interface 0x%x on DV", sense->fmt.f71.md[1]); | |
b6cba4ee | 1201 | else |
ab640db0 CO |
1202 | snprintf(service, BUFSIZE, "Repair will disable " |
1203 | "interfaces (0x%x-0x%x) on DV", | |
1204 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1205 | break; |
1206 | case 0x05: | |
1207 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1208 | snprintf(service, BUFSIZE, "Repair will disable loader" |
1209 | " 0x%x on DV", sense->fmt.f71.md[1]); | |
b6cba4ee | 1210 | else |
ab640db0 CO |
1211 | snprintf(service, BUFSIZE, "Repair will disable loader" |
1212 | " (0x%x-0x%x) on DV", | |
1213 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1214 | break; |
1215 | case 0x07: | |
ab640db0 | 1216 | snprintf(service, BUFSIZE, "Repair will disable access to DV"); |
b6cba4ee SB |
1217 | break; |
1218 | case 0x08: | |
1219 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1220 | snprintf(service, BUFSIZE, "Repair will disable " |
1221 | "message display 0x%x on DV", | |
1222 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1223 | else |
ab640db0 CO |
1224 | snprintf(service, BUFSIZE, "Repair will disable " |
1225 | "message displays (0x%x-0x%x) on DV", | |
1226 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1227 | break; |
1228 | case 0x09: | |
ab640db0 | 1229 | snprintf(service, BUFSIZE, "Clean DV"); |
b6cba4ee SB |
1230 | break; |
1231 | default: | |
ab640db0 CO |
1232 | snprintf(service, BUFSIZE, "0x%02x", |
1233 | sense->fmt.f71.smc); | |
b6cba4ee | 1234 | } |
ab640db0 CO |
1235 | |
1236 | dev_warn (&device->cdev->dev, "Device subsystem information: exception" | |
1237 | " %s, service %s\n", exception, service); | |
1238 | out_nomem: | |
1239 | kfree(exception); | |
1240 | kfree(service); | |
b6cba4ee SB |
1241 | } |
1242 | ||
1243 | /* | |
1244 | * Print standard ERA Message | |
1245 | */ | |
1246 | static void | |
1247 | tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) | |
1248 | { | |
1249 | struct tape_3590_sense *sense; | |
1250 | ||
1251 | sense = (struct tape_3590_sense *) irb->ecw; | |
1252 | if (sense->mc == 0) | |
1253 | return; | |
1254 | if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) { | |
1255 | if (tape_3590_msg[sense->mc] != NULL) | |
ab640db0 CO |
1256 | dev_warn (&device->cdev->dev, "The tape unit has " |
1257 | "issued sense message %s\n", | |
1258 | tape_3590_msg[sense->mc]); | |
1259 | else | |
1260 | dev_warn (&device->cdev->dev, "The tape unit has " | |
1261 | "issued an unknown sense message code 0x%x\n", | |
1262 | sense->mc); | |
b6cba4ee SB |
1263 | return; |
1264 | } | |
1265 | if (sense->mc == 0xf0) { | |
1266 | /* Standard Media Information Message */ | |
ab640db0 CO |
1267 | dev_warn (&device->cdev->dev, "MIM SEV=%i, MC=%02x, ES=%x/%x, " |
1268 | "RC=%02x-%04x-%02x\n", sense->fmt.f70.sev, sense->mc, | |
1269 | sense->fmt.f70.emc, sense->fmt.f70.smc, | |
1270 | sense->fmt.f70.refcode, sense->fmt.f70.mid, | |
1271 | sense->fmt.f70.fid); | |
b6cba4ee SB |
1272 | tape_3590_print_mim_msg_f0(device, irb); |
1273 | return; | |
1274 | } | |
1275 | if (sense->mc == 0xf1) { | |
1276 | /* Standard I/O Subsystem Service Information Message */ | |
ab640db0 CO |
1277 | dev_warn (&device->cdev->dev, "IOSIM SEV=%i, DEVTYPE=3590/%02x," |
1278 | " MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", | |
1279 | sense->fmt.f71.sev, device->cdev->id.dev_model, | |
1280 | sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, | |
1281 | sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, | |
1282 | sense->fmt.f71.refcode3); | |
b6cba4ee SB |
1283 | tape_3590_print_io_sim_msg_f1(device, irb); |
1284 | return; | |
1285 | } | |
1286 | if (sense->mc == 0xf2) { | |
1287 | /* Standard Device Service Information Message */ | |
ab640db0 CO |
1288 | dev_warn (&device->cdev->dev, "DEVSIM SEV=%i, DEVTYPE=3590/%02x" |
1289 | ", MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", | |
1290 | sense->fmt.f71.sev, device->cdev->id.dev_model, | |
1291 | sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, | |
1292 | sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, | |
1293 | sense->fmt.f71.refcode3); | |
b6cba4ee SB |
1294 | tape_3590_print_dev_sim_msg_f2(device, irb); |
1295 | return; | |
1296 | } | |
1297 | if (sense->mc == 0xf3) { | |
1298 | /* Standard Library Service Information Message */ | |
1299 | return; | |
1300 | } | |
ab640db0 CO |
1301 | dev_warn (&device->cdev->dev, "The tape unit has issued an unknown " |
1302 | "sense message code %x\n", sense->mc); | |
b6cba4ee SB |
1303 | } |
1304 | ||
cced1dd4 MH |
1305 | static int tape_3590_crypt_error(struct tape_device *device, |
1306 | struct tape_request *request, struct irb *irb) | |
1307 | { | |
160fbf2e | 1308 | u8 cu_rc; |
cced1dd4 | 1309 | u16 ekm_rc2; |
2a0217d5 | 1310 | char *sense; |
cced1dd4 MH |
1311 | |
1312 | sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data; | |
cced1dd4 | 1313 | cu_rc = sense[0]; |
cced1dd4 MH |
1314 | ekm_rc2 = *((u16*) &sense[10]); |
1315 | if ((cu_rc == 0) && (ekm_rc2 == 0xee31)) | |
1316 | /* key not defined on EKM */ | |
1317 | return tape_3590_erp_basic(device, request, irb, -EKEYREJECTED); | |
1318 | if ((cu_rc == 1) || (cu_rc == 2)) | |
1319 | /* No connection to EKM */ | |
1320 | return tape_3590_erp_basic(device, request, irb, -ENOTCONN); | |
1321 | ||
ab640db0 CO |
1322 | dev_err (&device->cdev->dev, "The tape unit failed to obtain the " |
1323 | "encryption key from EKM\n"); | |
cced1dd4 MH |
1324 | |
1325 | return tape_3590_erp_basic(device, request, irb, -ENOKEY); | |
1326 | } | |
1327 | ||
b6cba4ee SB |
1328 | /* |
1329 | * 3590 error Recovery routine: | |
1330 | * If possible, it tries to recover from the error. If this is not possible, | |
1331 | * inform the user about the problem. | |
1332 | */ | |
1333 | static int | |
1334 | tape_3590_unit_check(struct tape_device *device, struct tape_request *request, | |
1335 | struct irb *irb) | |
1336 | { | |
1337 | struct tape_3590_sense *sense; | |
b6cba4ee | 1338 | |
b6cba4ee SB |
1339 | sense = (struct tape_3590_sense *) irb->ecw; |
1340 | ||
cced1dd4 MH |
1341 | DBF_EVENT(6, "Unit Check: RQC = %x\n", sense->rc_rqc); |
1342 | ||
b6cba4ee SB |
1343 | /* |
1344 | * First check all RC-QRCs where we want to do something special | |
1345 | * - "break": basic error recovery is done | |
1346 | * - "goto out:": just print error message if available | |
1347 | */ | |
b6cba4ee SB |
1348 | switch (sense->rc_rqc) { |
1349 | ||
1350 | case 0x1110: | |
1351 | tape_3590_print_era_msg(device, irb); | |
1352 | return tape_3590_erp_read_buf_log(device, request, irb); | |
1353 | ||
1354 | case 0x2011: | |
1355 | tape_3590_print_era_msg(device, irb); | |
1356 | return tape_3590_erp_read_alternate(device, request, irb); | |
1357 | ||
1358 | case 0x2230: | |
1359 | case 0x2231: | |
1360 | tape_3590_print_era_msg(device, irb); | |
1361 | return tape_3590_erp_special_interrupt(device, request, irb); | |
cced1dd4 MH |
1362 | case 0x2240: |
1363 | return tape_3590_crypt_error(device, request, irb); | |
b6cba4ee SB |
1364 | |
1365 | case 0x3010: | |
1366 | DBF_EVENT(2, "(%08x): Backward at Beginning of Partition\n", | |
1367 | device->cdev_id); | |
1368 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1369 | case 0x3012: | |
1370 | DBF_EVENT(2, "(%08x): Forward at End of Partition\n", | |
1371 | device->cdev_id); | |
1372 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1373 | case 0x3020: | |
1374 | DBF_EVENT(2, "(%08x): End of Data Mark\n", device->cdev_id); | |
1375 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1376 | ||
1377 | case 0x3122: | |
1378 | DBF_EVENT(2, "(%08x): Rewind Unload initiated\n", | |
1379 | device->cdev_id); | |
1380 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1381 | case 0x3123: | |
1382 | DBF_EVENT(2, "(%08x): Rewind Unload complete\n", | |
1383 | device->cdev_id); | |
1384 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 1385 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1386 | return tape_3590_erp_basic(device, request, irb, 0); |
1387 | ||
1388 | case 0x4010: | |
1389 | /* | |
1390 | * print additional msg since default msg | |
1391 | * "device intervention" is not very meaningfull | |
1392 | */ | |
b6cba4ee | 1393 | tape_med_state_set(device, MS_UNLOADED); |
cced1dd4 | 1394 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1395 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
1396 | case 0x4012: /* Device Long Busy */ | |
cced1dd4 MH |
1397 | /* XXX: Also use long busy handling here? */ |
1398 | DBF_EVENT(6, "(%08x): LONG BUSY\n", device->cdev_id); | |
b6cba4ee | 1399 | tape_3590_print_era_msg(device, irb); |
cced1dd4 MH |
1400 | return tape_3590_erp_basic(device, request, irb, -EBUSY); |
1401 | case 0x4014: | |
1402 | DBF_EVENT(6, "(%08x): Crypto LONG BUSY\n", device->cdev_id); | |
b6cba4ee SB |
1403 | return tape_3590_erp_long_busy(device, request, irb); |
1404 | ||
1405 | case 0x5010: | |
1406 | if (sense->rac == 0xd0) { | |
1407 | /* Swap */ | |
1408 | tape_3590_print_era_msg(device, irb); | |
1409 | return tape_3590_erp_swap(device, request, irb); | |
1410 | } | |
1411 | if (sense->rac == 0x26) { | |
1412 | /* Read Opposite */ | |
1413 | tape_3590_print_era_msg(device, irb); | |
1414 | return tape_3590_erp_read_opposite(device, request, | |
1415 | irb); | |
1416 | } | |
1417 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1418 | case 0x5020: | |
1419 | case 0x5021: | |
1420 | case 0x5022: | |
1421 | case 0x5040: | |
1422 | case 0x5041: | |
1423 | case 0x5042: | |
1424 | tape_3590_print_era_msg(device, irb); | |
1425 | return tape_3590_erp_swap(device, request, irb); | |
1426 | ||
1427 | case 0x5110: | |
1428 | case 0x5111: | |
1429 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); | |
1430 | ||
1431 | case 0x5120: | |
1432 | case 0x1120: | |
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, -ENOMEDIUM); |
1436 | ||
1437 | case 0x6020: | |
b6cba4ee SB |
1438 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); |
1439 | ||
1440 | case 0x8011: | |
b6cba4ee SB |
1441 | return tape_3590_erp_basic(device, request, irb, -EPERM); |
1442 | case 0x8013: | |
ab640db0 CO |
1443 | dev_warn (&device->cdev->dev, "A different host has privileged" |
1444 | " access to the tape unit\n"); | |
b6cba4ee SB |
1445 | return tape_3590_erp_basic(device, request, irb, -EPERM); |
1446 | default: | |
1447 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1448 | } | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * 3590 interrupt handler: | |
1453 | */ | |
1454 | static int | |
1455 | tape_3590_irq(struct tape_device *device, struct tape_request *request, | |
1456 | struct irb *irb) | |
1457 | { | |
1458 | if (request == NULL) | |
1459 | return tape_3590_unsolicited_irq(device, irb); | |
1460 | ||
23d805b6 PO |
1461 | if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) && |
1462 | (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) && | |
1463 | (request->op == TO_WRI)) { | |
b6cba4ee SB |
1464 | /* Write at end of volume */ |
1465 | DBF_EVENT(2, "End of volume\n"); | |
1466 | return tape_3590_erp_failed(device, request, irb, -ENOSPC); | |
1467 | } | |
1468 | ||
23d805b6 | 1469 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
b6cba4ee SB |
1470 | return tape_3590_unit_check(device, request, irb); |
1471 | ||
23d805b6 PO |
1472 | if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) { |
1473 | if (irb->scsw.cmd.dstat == DEV_STAT_UNIT_EXCEP) { | |
b6cba4ee SB |
1474 | if (request->op == TO_FSB || request->op == TO_BSB) |
1475 | request->rescnt++; | |
1476 | else | |
1477 | DBF_EVENT(5, "Unit Exception!\n"); | |
1478 | } | |
1479 | ||
1480 | return tape_3590_done(device, request); | |
1481 | } | |
1482 | ||
23d805b6 | 1483 | if (irb->scsw.cmd.dstat & DEV_STAT_CHN_END) { |
6774def6 | 1484 | DBF_EVENT(2, "channel end\n"); |
b6cba4ee SB |
1485 | return TAPE_IO_PENDING; |
1486 | } | |
1487 | ||
23d805b6 | 1488 | if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
b6cba4ee SB |
1489 | DBF_EVENT(2, "Unit Attention when busy..\n"); |
1490 | return TAPE_IO_PENDING; | |
1491 | } | |
1492 | ||
1493 | DBF_EVENT(6, "xunknownirq\n"); | |
ab640db0 | 1494 | tape_dump_sense_dbf(device, request, irb); |
b6cba4ee SB |
1495 | return TAPE_IO_STOP; |
1496 | } | |
1497 | ||
e2963062 MH |
1498 | |
1499 | static int tape_3590_read_dev_chars(struct tape_device *device, | |
1500 | struct tape_3590_rdc_data *rdc_data) | |
1501 | { | |
1502 | int rc; | |
1503 | struct tape_request *request; | |
1504 | ||
1505 | request = tape_alloc_request(1, sizeof(*rdc_data)); | |
1506 | if (IS_ERR(request)) | |
1507 | return PTR_ERR(request); | |
1508 | request->op = TO_RDC; | |
1509 | tape_ccw_end(request->cpaddr, CCW_CMD_RDC, sizeof(*rdc_data), | |
1510 | request->cpdata); | |
1511 | rc = tape_do_io(device, request); | |
1512 | if (rc == 0) | |
1513 | memcpy(rdc_data, request->cpdata, sizeof(*rdc_data)); | |
1514 | tape_free_request(request); | |
1515 | return rc; | |
1516 | } | |
1517 | ||
b6cba4ee SB |
1518 | /* |
1519 | * Setup device function | |
1520 | */ | |
1521 | static int | |
1522 | tape_3590_setup_device(struct tape_device *device) | |
1523 | { | |
1524 | int rc; | |
1525 | struct tape_3590_disc_data *data; | |
e2963062 | 1526 | struct tape_3590_rdc_data *rdc_data; |
b6cba4ee SB |
1527 | |
1528 | DBF_EVENT(6, "3590 device setup\n"); | |
cced1dd4 | 1529 | data = kzalloc(sizeof(struct tape_3590_disc_data), GFP_KERNEL | GFP_DMA); |
b6cba4ee SB |
1530 | if (data == NULL) |
1531 | return -ENOMEM; | |
1532 | data->read_back_op = READ_PREVIOUS; | |
1533 | device->discdata = data; | |
1534 | ||
e2963062 | 1535 | rdc_data = kmalloc(sizeof(*rdc_data), GFP_KERNEL | GFP_DMA); |
cced1dd4 MH |
1536 | if (!rdc_data) { |
1537 | rc = -ENOMEM; | |
1538 | goto fail_kmalloc; | |
1539 | } | |
e2963062 | 1540 | rc = tape_3590_read_dev_chars(device, rdc_data); |
cced1dd4 MH |
1541 | if (rc) { |
1542 | DBF_LH(3, "Read device characteristics failed!\n"); | |
1783e60f | 1543 | goto fail_rdc_data; |
cced1dd4 MH |
1544 | } |
1545 | rc = tape_std_assign(device); | |
1546 | if (rc) | |
1547 | goto fail_rdc_data; | |
e2963062 | 1548 | if (rdc_data->data[31] == 0x13) { |
cced1dd4 MH |
1549 | data->crypt_info.capability |= TAPE390_CRYPT_SUPPORTED_MASK; |
1550 | tape_3592_disable_crypt(device); | |
1551 | } else { | |
1552 | DBF_EVENT(6, "Device has NO crypto support\n"); | |
b6cba4ee | 1553 | } |
cced1dd4 MH |
1554 | /* Try to find out if medium is loaded */ |
1555 | rc = tape_3590_sense_medium(device); | |
1556 | if (rc) { | |
1557 | DBF_LH(3, "3590 medium sense returned %d\n", rc); | |
1558 | goto fail_rdc_data; | |
1559 | } | |
1560 | return 0; | |
b6cba4ee | 1561 | |
cced1dd4 MH |
1562 | fail_rdc_data: |
1563 | kfree(rdc_data); | |
1564 | fail_kmalloc: | |
1565 | kfree(data); | |
b6cba4ee SB |
1566 | return rc; |
1567 | } | |
1568 | ||
1569 | /* | |
1570 | * Cleanup device function | |
1571 | */ | |
1572 | static void | |
1573 | tape_3590_cleanup_device(struct tape_device *device) | |
1574 | { | |
6dca467a | 1575 | flush_workqueue(tape_3590_wq); |
b6cba4ee SB |
1576 | tape_std_unassign(device); |
1577 | ||
1578 | kfree(device->discdata); | |
1579 | device->discdata = NULL; | |
1580 | } | |
1581 | ||
1582 | /* | |
1583 | * List of 3590 magnetic tape commands. | |
1584 | */ | |
1585 | static tape_mtop_fn tape_3590_mtop[TAPE_NR_MTOPS] = { | |
1586 | [MTRESET] = tape_std_mtreset, | |
1587 | [MTFSF] = tape_std_mtfsf, | |
1588 | [MTBSF] = tape_std_mtbsf, | |
1589 | [MTFSR] = tape_std_mtfsr, | |
1590 | [MTBSR] = tape_std_mtbsr, | |
1591 | [MTWEOF] = tape_std_mtweof, | |
1592 | [MTREW] = tape_std_mtrew, | |
1593 | [MTOFFL] = tape_std_mtoffl, | |
1594 | [MTNOP] = tape_std_mtnop, | |
1595 | [MTRETEN] = tape_std_mtreten, | |
1596 | [MTBSFM] = tape_std_mtbsfm, | |
1597 | [MTFSFM] = tape_std_mtfsfm, | |
1598 | [MTEOM] = tape_std_mteom, | |
1599 | [MTERASE] = tape_std_mterase, | |
1600 | [MTRAS1] = NULL, | |
1601 | [MTRAS2] = NULL, | |
1602 | [MTRAS3] = NULL, | |
1603 | [MTSETBLK] = tape_std_mtsetblk, | |
1604 | [MTSETDENSITY] = NULL, | |
1605 | [MTSEEK] = tape_3590_mtseek, | |
1606 | [MTTELL] = tape_3590_mttell, | |
1607 | [MTSETDRVBUFFER] = NULL, | |
1608 | [MTFSS] = NULL, | |
1609 | [MTBSS] = NULL, | |
1610 | [MTWSM] = NULL, | |
1611 | [MTLOCK] = NULL, | |
1612 | [MTUNLOCK] = NULL, | |
1613 | [MTLOAD] = tape_std_mtload, | |
1614 | [MTUNLOAD] = tape_std_mtunload, | |
1615 | [MTCOMPRESSION] = tape_std_mtcompression, | |
1616 | [MTSETPART] = NULL, | |
1617 | [MTMKPART] = NULL | |
1618 | }; | |
1619 | ||
1620 | /* | |
1621 | * Tape discipline structure for 3590. | |
1622 | */ | |
1623 | static struct tape_discipline tape_discipline_3590 = { | |
1624 | .owner = THIS_MODULE, | |
1625 | .setup_device = tape_3590_setup_device, | |
1626 | .cleanup_device = tape_3590_cleanup_device, | |
1627 | .process_eov = tape_std_process_eov, | |
1628 | .irq = tape_3590_irq, | |
1629 | .read_block = tape_std_read_block, | |
1630 | .write_block = tape_std_write_block, | |
b6cba4ee SB |
1631 | .ioctl_fn = tape_3590_ioctl, |
1632 | .mtop_array = tape_3590_mtop | |
1633 | }; | |
1634 | ||
1635 | static struct ccw_device_id tape_3590_ids[] = { | |
1636 | {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590}, | |
2cc924b8 | 1637 | {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592}, |
b6cba4ee SB |
1638 | { /* end of list */ } |
1639 | }; | |
1640 | ||
1641 | static int | |
1642 | tape_3590_online(struct ccw_device *cdev) | |
1643 | { | |
dff59b64 | 1644 | return tape_generic_online(dev_get_drvdata(&cdev->dev), |
b6cba4ee SB |
1645 | &tape_discipline_3590); |
1646 | } | |
1647 | ||
b6cba4ee | 1648 | static struct ccw_driver tape_3590_driver = { |
3bda058b SO |
1649 | .driver = { |
1650 | .name = "tape_3590", | |
1651 | .owner = THIS_MODULE, | |
1652 | }, | |
b6cba4ee SB |
1653 | .ids = tape_3590_ids, |
1654 | .probe = tape_generic_probe, | |
1655 | .remove = tape_generic_remove, | |
4d7a3cdf | 1656 | .set_offline = tape_generic_offline, |
b6cba4ee | 1657 | .set_online = tape_3590_online, |
3ef32e62 | 1658 | .freeze = tape_generic_pm_suspend, |
420f42ec | 1659 | .int_class = IRQIO_TAP, |
b6cba4ee SB |
1660 | }; |
1661 | ||
1662 | /* | |
1663 | * Setup discipline structure. | |
1664 | */ | |
1665 | static int | |
1666 | tape_3590_init(void) | |
1667 | { | |
1668 | int rc; | |
1669 | ||
1670 | TAPE_DBF_AREA = debug_register("tape_3590", 2, 2, 4 * sizeof(long)); | |
1671 | debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view); | |
1672 | #ifdef DBF_LIKE_HELL | |
1673 | debug_set_level(TAPE_DBF_AREA, 6); | |
1674 | #endif | |
1675 | ||
1676 | DBF_EVENT(3, "3590 init\n"); | |
6dca467a TH |
1677 | |
1678 | tape_3590_wq = alloc_workqueue("tape_3590", 0, 0); | |
1679 | if (!tape_3590_wq) | |
1680 | return -ENOMEM; | |
1681 | ||
b6cba4ee SB |
1682 | /* Register driver for 3590 tapes. */ |
1683 | rc = ccw_driver_register(&tape_3590_driver); | |
6dca467a TH |
1684 | if (rc) { |
1685 | destroy_workqueue(tape_3590_wq); | |
b6cba4ee | 1686 | DBF_EVENT(3, "3590 init failed\n"); |
6dca467a | 1687 | } else |
b6cba4ee SB |
1688 | DBF_EVENT(3, "3590 registered\n"); |
1689 | return rc; | |
1690 | } | |
1691 | ||
1692 | static void | |
1693 | tape_3590_exit(void) | |
1694 | { | |
1695 | ccw_driver_unregister(&tape_3590_driver); | |
6dca467a | 1696 | destroy_workqueue(tape_3590_wq); |
b6cba4ee SB |
1697 | debug_unregister(TAPE_DBF_AREA); |
1698 | } | |
1699 | ||
1700 | MODULE_DEVICE_TABLE(ccw, tape_3590_ids); | |
1701 | MODULE_AUTHOR("(C) 2001,2006 IBM Corporation"); | |
1702 | MODULE_DESCRIPTION("Linux on zSeries channel attached 3590 tape device driver"); | |
1703 | MODULE_LICENSE("GPL"); | |
1704 | ||
1705 | module_init(tape_3590_init); | |
1706 | module_exit(tape_3590_exit); |