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; | |
2ccb5bf0 ME |
315 | ext_kekls = memdup_user((char __user *)arg, sizeof(*ext_kekls)); |
316 | if (IS_ERR(ext_kekls)) | |
317 | return PTR_ERR(ext_kekls); | |
cced1dd4 | 318 | rc = tape_3592_kekl_set(device, ext_kekls); |
cced1dd4 MH |
319 | kfree(ext_kekls); |
320 | return rc; | |
321 | } | |
322 | ||
323 | /* | |
324 | * Enable encryption | |
325 | */ | |
0c2bd9b2 | 326 | static struct tape_request *__tape_3592_enable_crypt(struct tape_device *device) |
cced1dd4 MH |
327 | { |
328 | struct tape_request *request; | |
329 | char *data; | |
330 | ||
331 | DBF_EVENT(6, "tape_3592_enable_crypt\n"); | |
332 | if (!crypt_supported(device)) | |
0c2bd9b2 | 333 | return ERR_PTR(-ENOSYS); |
cced1dd4 MH |
334 | request = tape_alloc_request(2, 72); |
335 | if (IS_ERR(request)) | |
0c2bd9b2 | 336 | return request; |
cced1dd4 MH |
337 | data = request->cpdata; |
338 | memset(data,0,72); | |
339 | ||
340 | data[0] = 0x05; | |
341 | data[36 + 0] = 0x03; | |
342 | data[36 + 1] = 0x03; | |
343 | data[36 + 4] = 0x40; | |
344 | data[36 + 6] = 0x01; | |
345 | data[36 + 14] = 0x2f; | |
346 | data[36 + 18] = 0xc3; | |
347 | data[36 + 35] = 0x72; | |
348 | request->op = TO_CRYPT_ON; | |
349 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); | |
350 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); | |
0c2bd9b2 MS |
351 | return request; |
352 | } | |
353 | ||
354 | static int tape_3592_enable_crypt(struct tape_device *device) | |
355 | { | |
356 | struct tape_request *request; | |
357 | ||
358 | request = __tape_3592_enable_crypt(device); | |
359 | if (IS_ERR(request)) | |
360 | return PTR_ERR(request); | |
cced1dd4 MH |
361 | return tape_do_io_free(device, request); |
362 | } | |
363 | ||
0c2bd9b2 MS |
364 | static void tape_3592_enable_crypt_async(struct tape_device *device) |
365 | { | |
366 | struct tape_request *request; | |
367 | ||
368 | request = __tape_3592_enable_crypt(device); | |
369 | if (!IS_ERR(request)) | |
370 | tape_do_io_async_free(device, request); | |
371 | } | |
372 | ||
cced1dd4 MH |
373 | /* |
374 | * Disable encryption | |
375 | */ | |
0c2bd9b2 | 376 | static struct tape_request *__tape_3592_disable_crypt(struct tape_device *device) |
cced1dd4 MH |
377 | { |
378 | struct tape_request *request; | |
379 | char *data; | |
380 | ||
381 | DBF_EVENT(6, "tape_3592_disable_crypt\n"); | |
382 | if (!crypt_supported(device)) | |
0c2bd9b2 | 383 | return ERR_PTR(-ENOSYS); |
cced1dd4 MH |
384 | request = tape_alloc_request(2, 72); |
385 | if (IS_ERR(request)) | |
0c2bd9b2 | 386 | return request; |
cced1dd4 MH |
387 | data = request->cpdata; |
388 | memset(data,0,72); | |
389 | ||
390 | data[0] = 0x05; | |
391 | data[36 + 0] = 0x03; | |
392 | data[36 + 1] = 0x03; | |
393 | data[36 + 35] = 0x32; | |
394 | ||
395 | request->op = TO_CRYPT_OFF; | |
396 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); | |
397 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); | |
398 | ||
0c2bd9b2 MS |
399 | return request; |
400 | } | |
401 | ||
402 | static int tape_3592_disable_crypt(struct tape_device *device) | |
403 | { | |
404 | struct tape_request *request; | |
405 | ||
406 | request = __tape_3592_disable_crypt(device); | |
407 | if (IS_ERR(request)) | |
408 | return PTR_ERR(request); | |
cced1dd4 MH |
409 | return tape_do_io_free(device, request); |
410 | } | |
411 | ||
0c2bd9b2 MS |
412 | static void tape_3592_disable_crypt_async(struct tape_device *device) |
413 | { | |
414 | struct tape_request *request; | |
415 | ||
416 | request = __tape_3592_disable_crypt(device); | |
417 | if (!IS_ERR(request)) | |
418 | tape_do_io_async_free(device, request); | |
419 | } | |
420 | ||
cced1dd4 MH |
421 | /* |
422 | * IOCTL: Set encryption status | |
423 | */ | |
424 | static int tape_3592_ioctl_crypt_set(struct tape_device *device, | |
425 | unsigned long arg) | |
426 | { | |
427 | struct tape390_crypt_info info; | |
428 | ||
429 | DBF_EVENT(6, "tape_3592_ioctl_crypt_set\n"); | |
430 | if (!crypt_supported(device)) | |
431 | return -ENOSYS; | |
432 | if (copy_from_user(&info, (char __user *)arg, sizeof(info))) | |
433 | return -EFAULT; | |
434 | if (info.status & ~TAPE390_CRYPT_ON_MASK) | |
435 | return -EINVAL; | |
436 | if (info.status & TAPE390_CRYPT_ON_MASK) | |
437 | return tape_3592_enable_crypt(device); | |
438 | else | |
439 | return tape_3592_disable_crypt(device); | |
440 | } | |
441 | ||
442 | static int tape_3590_sense_medium(struct tape_device *device); | |
443 | ||
444 | /* | |
445 | * IOCTL: Query enryption status | |
446 | */ | |
447 | static int tape_3592_ioctl_crypt_query(struct tape_device *device, | |
448 | unsigned long arg) | |
449 | { | |
450 | DBF_EVENT(6, "tape_3592_ioctl_crypt_query\n"); | |
451 | if (!crypt_supported(device)) | |
452 | return -ENOSYS; | |
453 | tape_3590_sense_medium(device); | |
454 | if (copy_to_user((char __user *) arg, &TAPE_3590_CRYPT_INFO(device), | |
455 | sizeof(TAPE_3590_CRYPT_INFO(device)))) | |
456 | return -EFAULT; | |
457 | else | |
458 | return 0; | |
459 | } | |
460 | ||
b6cba4ee SB |
461 | /* |
462 | * 3590 IOCTL Overload | |
463 | */ | |
464 | static int | |
465 | tape_3590_ioctl(struct tape_device *device, unsigned int cmd, unsigned long arg) | |
466 | { | |
467 | switch (cmd) { | |
468 | case TAPE390_DISPLAY: { | |
469 | struct display_struct disp; | |
470 | ||
471 | if (copy_from_user(&disp, (char __user *) arg, sizeof(disp))) | |
472 | return -EFAULT; | |
473 | ||
474 | return tape_std_display(device, &disp); | |
475 | } | |
cced1dd4 MH |
476 | case TAPE390_KEKL_SET: |
477 | return tape_3592_ioctl_kekl_set(device, arg); | |
478 | case TAPE390_KEKL_QUERY: | |
479 | return tape_3592_ioctl_kekl_query(device, arg); | |
480 | case TAPE390_CRYPT_SET: | |
481 | return tape_3592_ioctl_crypt_set(device, arg); | |
482 | case TAPE390_CRYPT_QUERY: | |
483 | return tape_3592_ioctl_crypt_query(device, arg); | |
b6cba4ee SB |
484 | default: |
485 | return -EINVAL; /* no additional ioctls */ | |
486 | } | |
487 | } | |
488 | ||
489 | /* | |
490 | * SENSE Medium: Get Sense data about medium state | |
491 | */ | |
0c2bd9b2 | 492 | static int tape_3590_sense_medium(struct tape_device *device) |
b6cba4ee SB |
493 | { |
494 | struct tape_request *request; | |
495 | ||
496 | request = tape_alloc_request(1, 128); | |
497 | if (IS_ERR(request)) | |
498 | return PTR_ERR(request); | |
499 | request->op = TO_MSEN; | |
500 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); | |
501 | return tape_do_io_free(device, request); | |
502 | } | |
503 | ||
0c2bd9b2 MS |
504 | static void tape_3590_sense_medium_async(struct tape_device *device) |
505 | { | |
506 | struct tape_request *request; | |
507 | ||
508 | request = tape_alloc_request(1, 128); | |
509 | if (IS_ERR(request)) | |
510 | return; | |
511 | request->op = TO_MSEN; | |
512 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); | |
513 | tape_do_io_async_free(device, request); | |
514 | } | |
515 | ||
b6cba4ee SB |
516 | /* |
517 | * MTTELL: Tell block. Return the number of block relative to current file. | |
518 | */ | |
519 | static int | |
520 | tape_3590_mttell(struct tape_device *device, int mt_count) | |
521 | { | |
522 | __u64 block_id; | |
523 | int rc; | |
524 | ||
525 | rc = tape_std_read_block_id(device, &block_id); | |
526 | if (rc) | |
527 | return rc; | |
528 | return block_id >> 32; | |
529 | } | |
530 | ||
531 | /* | |
532 | * MTSEEK: seek to the specified block. | |
533 | */ | |
534 | static int | |
535 | tape_3590_mtseek(struct tape_device *device, int count) | |
536 | { | |
537 | struct tape_request *request; | |
538 | ||
539 | DBF_EVENT(6, "xsee id: %x\n", count); | |
540 | request = tape_alloc_request(3, 4); | |
541 | if (IS_ERR(request)) | |
542 | return PTR_ERR(request); | |
543 | request->op = TO_LBL; | |
544 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); | |
545 | *(__u32 *) request->cpdata = count; | |
546 | tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); | |
547 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); | |
548 | return tape_do_io_free(device, request); | |
549 | } | |
550 | ||
551 | /* | |
552 | * Read Opposite Error Recovery Function: | |
553 | * Used, when Read Forward does not work | |
554 | */ | |
555 | static void | |
556 | tape_3590_read_opposite(struct tape_device *device, | |
557 | struct tape_request *request) | |
558 | { | |
559 | struct tape_3590_disc_data *data; | |
560 | ||
561 | /* | |
562 | * We have allocated 4 ccws in tape_std_read, so we can now | |
563 | * transform the request to a read backward, followed by a | |
564 | * forward space block. | |
565 | */ | |
566 | request->op = TO_RBA; | |
567 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); | |
568 | data = device->discdata; | |
569 | tape_ccw_cc_idal(request->cpaddr + 1, data->read_back_op, | |
570 | device->char_data.idal_buf); | |
571 | tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL); | |
572 | tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL); | |
573 | DBF_EVENT(6, "xrop ccwg\n"); | |
574 | } | |
575 | ||
576 | /* | |
577 | * Read Attention Msg | |
578 | * This should be done after an interrupt with attention bit (0x80) | |
579 | * in device state. | |
580 | * | |
581 | * After a "read attention message" request there are two possible | |
582 | * results: | |
583 | * | |
584 | * 1. A unit check is presented, when attention sense is present (e.g. when | |
585 | * a medium has been unloaded). The attention sense comes then | |
586 | * together with the unit check. The recovery action is either "retry" | |
587 | * (in case there is an attention message pending) or "permanent error". | |
588 | * | |
589 | * 2. The attention msg is written to the "read subsystem data" buffer. | |
590 | * In this case we probably should print it to the console. | |
591 | */ | |
0c2bd9b2 | 592 | static void tape_3590_read_attmsg_async(struct tape_device *device) |
b6cba4ee SB |
593 | { |
594 | struct tape_request *request; | |
595 | char *buf; | |
596 | ||
597 | request = tape_alloc_request(3, 4096); | |
598 | if (IS_ERR(request)) | |
0c2bd9b2 | 599 | return; |
b6cba4ee SB |
600 | request->op = TO_READ_ATTMSG; |
601 | buf = request->cpdata; | |
602 | buf[0] = PREP_RD_SS_DATA; | |
603 | buf[6] = RD_ATTMSG; /* read att msg */ | |
604 | tape_ccw_cc(request->cpaddr, PERFORM_SS_FUNC, 12, buf); | |
605 | tape_ccw_cc(request->cpaddr + 1, READ_SS_DATA, 4096 - 12, buf + 12); | |
606 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); | |
0c2bd9b2 | 607 | tape_do_io_async_free(device, request); |
b6cba4ee SB |
608 | } |
609 | ||
610 | /* | |
611 | * These functions are used to schedule follow-up actions from within an | |
612 | * interrupt context (like unsolicited interrupts). | |
0c2bd9b2 MS |
613 | * Note: the work handler is called by the system work queue. The tape |
614 | * commands started by the handler need to be asynchrounous, otherwise | |
615 | * a deadlock can occur e.g. in case of a deferred cc=1 (see __tape_do_irq). | |
b6cba4ee | 616 | */ |
2cc924b8 SB |
617 | struct work_handler_data { |
618 | struct tape_device *device; | |
619 | enum tape_op op; | |
620 | struct work_struct work; | |
621 | }; | |
622 | ||
b6cba4ee | 623 | static void |
c1637532 | 624 | tape_3590_work_handler(struct work_struct *work) |
b6cba4ee | 625 | { |
c1637532 MS |
626 | struct work_handler_data *p = |
627 | container_of(work, struct work_handler_data, work); | |
b6cba4ee SB |
628 | |
629 | switch (p->op) { | |
630 | case TO_MSEN: | |
0c2bd9b2 | 631 | tape_3590_sense_medium_async(p->device); |
b6cba4ee SB |
632 | break; |
633 | case TO_READ_ATTMSG: | |
0c2bd9b2 | 634 | tape_3590_read_attmsg_async(p->device); |
b6cba4ee | 635 | break; |
cced1dd4 | 636 | case TO_CRYPT_ON: |
0c2bd9b2 | 637 | tape_3592_enable_crypt_async(p->device); |
cced1dd4 MH |
638 | break; |
639 | case TO_CRYPT_OFF: | |
0c2bd9b2 | 640 | tape_3592_disable_crypt_async(p->device); |
cced1dd4 | 641 | break; |
b6cba4ee SB |
642 | default: |
643 | DBF_EVENT(3, "T3590: work handler undefined for " | |
644 | "operation 0x%02x\n", p->op); | |
645 | } | |
646 | tape_put_device(p->device); | |
647 | kfree(p); | |
648 | } | |
649 | ||
650 | static int | |
651 | tape_3590_schedule_work(struct tape_device *device, enum tape_op op) | |
652 | { | |
2cc924b8 | 653 | struct work_handler_data *p; |
b6cba4ee SB |
654 | |
655 | if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL) | |
656 | return -ENOMEM; | |
657 | ||
c1637532 | 658 | INIT_WORK(&p->work, tape_3590_work_handler); |
b6cba4ee | 659 | |
8fd138c3 | 660 | p->device = tape_get_device(device); |
b6cba4ee SB |
661 | p->op = op; |
662 | ||
6dca467a | 663 | queue_work(tape_3590_wq, &p->work); |
b6cba4ee SB |
664 | return 0; |
665 | } | |
666 | ||
cced1dd4 MH |
667 | static void tape_3590_med_state_set(struct tape_device *device, |
668 | struct tape_3590_med_sense *sense) | |
669 | { | |
670 | struct tape390_crypt_info *c_info; | |
671 | ||
672 | c_info = &TAPE_3590_CRYPT_INFO(device); | |
673 | ||
1b9fd76e MH |
674 | DBF_EVENT(6, "medium state: %x:%x\n", sense->macst, sense->masst); |
675 | switch (sense->macst) { | |
676 | case 0x04: | |
677 | case 0x05: | |
678 | case 0x06: | |
cced1dd4 MH |
679 | tape_med_state_set(device, MS_UNLOADED); |
680 | TAPE_3590_CRYPT_INFO(device).medium_status = 0; | |
681 | return; | |
1b9fd76e MH |
682 | case 0x08: |
683 | case 0x09: | |
684 | tape_med_state_set(device, MS_LOADED); | |
685 | break; | |
686 | default: | |
687 | tape_med_state_set(device, MS_UNKNOWN); | |
cced1dd4 MH |
688 | return; |
689 | } | |
cced1dd4 MH |
690 | c_info->medium_status |= TAPE390_MEDIUM_LOADED_MASK; |
691 | if (sense->flags & MSENSE_CRYPT_MASK) { | |
ab640db0 | 692 | DBF_EVENT(6, "Medium is encrypted (%04x)\n", sense->flags); |
cced1dd4 MH |
693 | c_info->medium_status |= TAPE390_MEDIUM_ENCRYPTED_MASK; |
694 | } else { | |
695 | DBF_EVENT(6, "Medium is not encrypted %04x\n", sense->flags); | |
696 | c_info->medium_status &= ~TAPE390_MEDIUM_ENCRYPTED_MASK; | |
697 | } | |
698 | } | |
699 | ||
b6cba4ee SB |
700 | /* |
701 | * The done handler is called at device/channel end and wakes up the sleeping | |
702 | * process | |
703 | */ | |
704 | static int | |
705 | tape_3590_done(struct tape_device *device, struct tape_request *request) | |
706 | { | |
b6cba4ee SB |
707 | |
708 | DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]); | |
709 | ||
710 | switch (request->op) { | |
711 | case TO_BSB: | |
712 | case TO_BSF: | |
713 | case TO_DSE: | |
714 | case TO_FSB: | |
715 | case TO_FSF: | |
716 | case TO_LBL: | |
717 | case TO_RFO: | |
718 | case TO_RBA: | |
719 | case TO_REW: | |
720 | case TO_WRI: | |
721 | case TO_WTM: | |
722 | case TO_BLOCK: | |
723 | case TO_LOAD: | |
724 | tape_med_state_set(device, MS_LOADED); | |
725 | break; | |
726 | case TO_RUN: | |
727 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 728 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
729 | break; |
730 | case TO_MSEN: | |
cced1dd4 MH |
731 | tape_3590_med_state_set(device, request->cpdata); |
732 | break; | |
733 | case TO_CRYPT_ON: | |
734 | TAPE_3590_CRYPT_INFO(device).status | |
735 | |= TAPE390_CRYPT_ON_MASK; | |
736 | *(device->modeset_byte) |= 0x03; | |
737 | break; | |
738 | case TO_CRYPT_OFF: | |
739 | TAPE_3590_CRYPT_INFO(device).status | |
740 | &= ~TAPE390_CRYPT_ON_MASK; | |
741 | *(device->modeset_byte) &= ~0x03; | |
b6cba4ee SB |
742 | break; |
743 | case TO_RBI: /* RBI seems to succeed even without medium loaded. */ | |
744 | case TO_NOP: /* Same to NOP. */ | |
745 | case TO_READ_CONFIG: | |
746 | case TO_READ_ATTMSG: | |
747 | case TO_DIS: | |
748 | case TO_ASSIGN: | |
749 | case TO_UNASSIGN: | |
b6cba4ee | 750 | case TO_SIZE: |
cced1dd4 MH |
751 | case TO_KEKL_SET: |
752 | case TO_KEKL_QUERY: | |
e2963062 | 753 | case TO_RDC: |
b6cba4ee SB |
754 | break; |
755 | } | |
756 | return TAPE_IO_SUCCESS; | |
757 | } | |
758 | ||
759 | /* | |
eef35c2d | 760 | * This function is called, when error recovery was successful |
b6cba4ee SB |
761 | */ |
762 | static inline int | |
763 | tape_3590_erp_succeded(struct tape_device *device, struct tape_request *request) | |
764 | { | |
73ac36ea | 765 | DBF_EVENT(3, "Error Recovery successful for %s\n", |
b6cba4ee SB |
766 | tape_op_verbose[request->op]); |
767 | return tape_3590_done(device, request); | |
768 | } | |
769 | ||
770 | /* | |
eef35c2d | 771 | * This function is called, when error recovery was not successful |
b6cba4ee SB |
772 | */ |
773 | static inline int | |
774 | tape_3590_erp_failed(struct tape_device *device, struct tape_request *request, | |
775 | struct irb *irb, int rc) | |
776 | { | |
777 | DBF_EVENT(3, "Error Recovery failed for %s\n", | |
778 | tape_op_verbose[request->op]); | |
779 | tape_dump_sense_dbf(device, request, irb); | |
780 | return rc; | |
781 | } | |
782 | ||
783 | /* | |
784 | * Error Recovery do retry | |
785 | */ | |
786 | static inline int | |
787 | tape_3590_erp_retry(struct tape_device *device, struct tape_request *request, | |
788 | struct irb *irb) | |
789 | { | |
790 | DBF_EVENT(2, "Retry: %s\n", tape_op_verbose[request->op]); | |
791 | tape_dump_sense_dbf(device, request, irb); | |
792 | return TAPE_IO_RETRY; | |
793 | } | |
794 | ||
795 | /* | |
796 | * Handle unsolicited interrupts | |
797 | */ | |
798 | static int | |
799 | tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb) | |
800 | { | |
23d805b6 | 801 | if (irb->scsw.cmd.dstat == DEV_STAT_CHN_END) |
b6cba4ee SB |
802 | /* Probably result of halt ssch */ |
803 | return TAPE_IO_PENDING; | |
23d805b6 | 804 | else if (irb->scsw.cmd.dstat == 0x85) |
1b9fd76e MH |
805 | /* Device Ready */ |
806 | DBF_EVENT(3, "unsol.irq! tape ready: %08x\n", device->cdev_id); | |
23d805b6 | 807 | else if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
b6cba4ee | 808 | tape_3590_schedule_work(device, TO_READ_ATTMSG); |
1b9fd76e | 809 | } else { |
b6cba4ee | 810 | DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id); |
ab640db0 | 811 | tape_dump_sense_dbf(device, NULL, irb); |
b6cba4ee | 812 | } |
1b9fd76e MH |
813 | /* check medium state */ |
814 | tape_3590_schedule_work(device, TO_MSEN); | |
b6cba4ee SB |
815 | return TAPE_IO_SUCCESS; |
816 | } | |
817 | ||
818 | /* | |
819 | * Basic Recovery routine | |
820 | */ | |
821 | static int | |
822 | tape_3590_erp_basic(struct tape_device *device, struct tape_request *request, | |
823 | struct irb *irb, int rc) | |
824 | { | |
825 | struct tape_3590_sense *sense; | |
826 | ||
827 | sense = (struct tape_3590_sense *) irb->ecw; | |
828 | ||
829 | switch (sense->bra) { | |
830 | case SENSE_BRA_PER: | |
831 | return tape_3590_erp_failed(device, request, irb, rc); | |
832 | case SENSE_BRA_CONT: | |
833 | return tape_3590_erp_succeded(device, request); | |
834 | case SENSE_BRA_RE: | |
835 | return tape_3590_erp_retry(device, request, irb); | |
836 | case SENSE_BRA_DRE: | |
837 | return tape_3590_erp_failed(device, request, irb, rc); | |
838 | default: | |
b6cba4ee SB |
839 | BUG(); |
840 | return TAPE_IO_STOP; | |
841 | } | |
842 | } | |
843 | ||
844 | /* | |
845 | * RDL: Read Device (buffered) log | |
846 | */ | |
847 | static int | |
848 | tape_3590_erp_read_buf_log(struct tape_device *device, | |
849 | struct tape_request *request, struct irb *irb) | |
850 | { | |
851 | /* | |
852 | * We just do the basic error recovery at the moment (retry). | |
853 | * Perhaps in the future, we read the log and dump it somewhere... | |
854 | */ | |
855 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
856 | } | |
857 | ||
858 | /* | |
859 | * SWAP: Swap Devices | |
860 | */ | |
861 | static int | |
862 | tape_3590_erp_swap(struct tape_device *device, struct tape_request *request, | |
863 | struct irb *irb) | |
864 | { | |
865 | /* | |
866 | * This error recovery should swap the tapes | |
867 | * if the original has a problem. The operation | |
868 | * should proceed with the new tape... this | |
869 | * should probably be done in user space! | |
870 | */ | |
ab640db0 CO |
871 | dev_warn (&device->cdev->dev, "The tape medium must be loaded into a " |
872 | "different tape unit\n"); | |
b6cba4ee SB |
873 | return tape_3590_erp_basic(device, request, irb, -EIO); |
874 | } | |
875 | ||
876 | /* | |
877 | * LBY: Long Busy | |
878 | */ | |
879 | static int | |
880 | tape_3590_erp_long_busy(struct tape_device *device, | |
881 | struct tape_request *request, struct irb *irb) | |
882 | { | |
cced1dd4 MH |
883 | DBF_EVENT(6, "Device is busy\n"); |
884 | return TAPE_IO_LONG_BUSY; | |
b6cba4ee SB |
885 | } |
886 | ||
887 | /* | |
888 | * SPI: Special Intercept | |
889 | */ | |
890 | static int | |
891 | tape_3590_erp_special_interrupt(struct tape_device *device, | |
892 | struct tape_request *request, struct irb *irb) | |
893 | { | |
894 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
895 | } | |
896 | ||
897 | /* | |
898 | * RDA: Read Alternate | |
899 | */ | |
900 | static int | |
901 | tape_3590_erp_read_alternate(struct tape_device *device, | |
902 | struct tape_request *request, struct irb *irb) | |
903 | { | |
904 | struct tape_3590_disc_data *data; | |
905 | ||
906 | /* | |
907 | * The issued Read Backward or Read Previous command is not | |
908 | * supported by the device | |
909 | * The recovery action should be to issue another command: | |
910 | * Read Revious: if Read Backward is not supported | |
911 | * Read Backward: if Read Previous is not supported | |
912 | */ | |
913 | data = device->discdata; | |
914 | if (data->read_back_op == READ_PREVIOUS) { | |
915 | DBF_EVENT(2, "(%08x): No support for READ_PREVIOUS command\n", | |
916 | device->cdev_id); | |
917 | data->read_back_op = READ_BACKWARD; | |
918 | } else { | |
919 | DBF_EVENT(2, "(%08x): No support for READ_BACKWARD command\n", | |
920 | device->cdev_id); | |
921 | data->read_back_op = READ_PREVIOUS; | |
922 | } | |
923 | tape_3590_read_opposite(device, request); | |
924 | return tape_3590_erp_retry(device, request, irb); | |
925 | } | |
926 | ||
927 | /* | |
928 | * Error Recovery read opposite | |
929 | */ | |
930 | static int | |
931 | tape_3590_erp_read_opposite(struct tape_device *device, | |
932 | struct tape_request *request, struct irb *irb) | |
933 | { | |
934 | switch (request->op) { | |
935 | case TO_RFO: | |
936 | /* | |
937 | * We did read forward, but the data could not be read. | |
938 | * We will read backward and then skip forward again. | |
939 | */ | |
940 | tape_3590_read_opposite(device, request); | |
941 | return tape_3590_erp_retry(device, request, irb); | |
942 | case TO_RBA: | |
943 | /* We tried to read forward and backward, but hat no success */ | |
944 | return tape_3590_erp_failed(device, request, irb, -EIO); | |
945 | break; | |
946 | default: | |
b6cba4ee SB |
947 | return tape_3590_erp_failed(device, request, irb, -EIO); |
948 | } | |
949 | } | |
950 | ||
951 | /* | |
952 | * Print an MIM (Media Information Message) (message code f0) | |
953 | */ | |
954 | static void | |
955 | tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb) | |
956 | { | |
957 | struct tape_3590_sense *sense; | |
ab640db0 CO |
958 | char *exception, *service; |
959 | ||
960 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
961 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
962 | ||
963 | if (!exception || !service) | |
964 | goto out_nomem; | |
b6cba4ee SB |
965 | |
966 | sense = (struct tape_3590_sense *) irb->ecw; | |
967 | /* Exception Message */ | |
968 | switch (sense->fmt.f70.emc) { | |
969 | case 0x02: | |
ab640db0 | 970 | snprintf(exception, BUFSIZE, "Data degraded"); |
b6cba4ee SB |
971 | break; |
972 | case 0x03: | |
ab640db0 CO |
973 | snprintf(exception, BUFSIZE, "Data degraded in partion %i", |
974 | sense->fmt.f70.mp); | |
b6cba4ee SB |
975 | break; |
976 | case 0x04: | |
ab640db0 | 977 | snprintf(exception, BUFSIZE, "Medium degraded"); |
b6cba4ee SB |
978 | break; |
979 | case 0x05: | |
ab640db0 CO |
980 | snprintf(exception, BUFSIZE, "Medium degraded in partition %i", |
981 | sense->fmt.f70.mp); | |
b6cba4ee SB |
982 | break; |
983 | case 0x06: | |
ab640db0 | 984 | snprintf(exception, BUFSIZE, "Block 0 Error"); |
b6cba4ee SB |
985 | break; |
986 | case 0x07: | |
ab640db0 CO |
987 | snprintf(exception, BUFSIZE, "Medium Exception 0x%02x", |
988 | sense->fmt.f70.md); | |
b6cba4ee SB |
989 | break; |
990 | default: | |
ab640db0 CO |
991 | snprintf(exception, BUFSIZE, "0x%02x", |
992 | sense->fmt.f70.emc); | |
b6cba4ee SB |
993 | break; |
994 | } | |
995 | /* Service Message */ | |
996 | switch (sense->fmt.f70.smc) { | |
997 | case 0x02: | |
ab640db0 CO |
998 | snprintf(service, BUFSIZE, "Reference Media maintenance " |
999 | "procedure %i", sense->fmt.f70.md); | |
b6cba4ee SB |
1000 | break; |
1001 | default: | |
ab640db0 CO |
1002 | snprintf(service, BUFSIZE, "0x%02x", |
1003 | sense->fmt.f70.smc); | |
b6cba4ee SB |
1004 | break; |
1005 | } | |
ab640db0 CO |
1006 | |
1007 | dev_warn (&device->cdev->dev, "Tape media information: exception %s, " | |
1008 | "service %s\n", exception, service); | |
1009 | ||
1010 | out_nomem: | |
1011 | kfree(exception); | |
1012 | kfree(service); | |
b6cba4ee SB |
1013 | } |
1014 | ||
1015 | /* | |
1016 | * Print an I/O Subsystem Service Information Message (message code f1) | |
1017 | */ | |
1018 | static void | |
1019 | tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb) | |
1020 | { | |
1021 | struct tape_3590_sense *sense; | |
ab640db0 CO |
1022 | char *exception, *service; |
1023 | ||
1024 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1025 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1026 | ||
1027 | if (!exception || !service) | |
1028 | goto out_nomem; | |
b6cba4ee SB |
1029 | |
1030 | sense = (struct tape_3590_sense *) irb->ecw; | |
1031 | /* Exception Message */ | |
1032 | switch (sense->fmt.f71.emc) { | |
1033 | case 0x01: | |
ab640db0 | 1034 | snprintf(exception, BUFSIZE, "Effect of failure is unknown"); |
b6cba4ee SB |
1035 | break; |
1036 | case 0x02: | |
ab640db0 CO |
1037 | snprintf(exception, BUFSIZE, "CU Exception - no performance " |
1038 | "impact"); | |
b6cba4ee SB |
1039 | break; |
1040 | case 0x03: | |
ab640db0 CO |
1041 | snprintf(exception, BUFSIZE, "CU Exception on channel " |
1042 | "interface 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1043 | break; |
1044 | case 0x04: | |
ab640db0 CO |
1045 | snprintf(exception, BUFSIZE, "CU Exception on device path " |
1046 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1047 | break; |
1048 | case 0x05: | |
ab640db0 CO |
1049 | snprintf(exception, BUFSIZE, "CU Exception on library path " |
1050 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1051 | break; |
1052 | case 0x06: | |
ab640db0 CO |
1053 | snprintf(exception, BUFSIZE, "CU Exception on node 0x%02x", |
1054 | sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1055 | break; |
1056 | case 0x07: | |
ab640db0 CO |
1057 | snprintf(exception, BUFSIZE, "CU Exception on partition " |
1058 | "0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1059 | break; |
1060 | default: | |
ab640db0 CO |
1061 | snprintf(exception, BUFSIZE, "0x%02x", |
1062 | sense->fmt.f71.emc); | |
b6cba4ee SB |
1063 | } |
1064 | /* Service Message */ | |
1065 | switch (sense->fmt.f71.smc) { | |
1066 | case 0x01: | |
ab640db0 | 1067 | snprintf(service, BUFSIZE, "Repair impact is unknown"); |
b6cba4ee SB |
1068 | break; |
1069 | case 0x02: | |
ab640db0 CO |
1070 | snprintf(service, BUFSIZE, "Repair will not impact cu " |
1071 | "performance"); | |
b6cba4ee SB |
1072 | break; |
1073 | case 0x03: | |
1074 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1075 | snprintf(service, BUFSIZE, "Repair will disable node " |
1076 | "0x%x on CU", sense->fmt.f71.md[1]); | |
b6cba4ee | 1077 | else |
ab640db0 CO |
1078 | snprintf(service, BUFSIZE, "Repair will disable " |
1079 | "nodes (0x%x-0x%x) on CU", sense->fmt.f71.md[1], | |
1080 | sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1081 | break; |
1082 | case 0x04: | |
1083 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1084 | snprintf(service, BUFSIZE, "Repair will disable " |
1085 | "channel path 0x%x on CU", | |
1086 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1087 | else |
6774def6 | 1088 | snprintf(service, BUFSIZE, "Repair will disable channel" |
ab640db0 CO |
1089 | " paths (0x%x-0x%x) on CU", |
1090 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1091 | break; |
1092 | case 0x05: | |
1093 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1094 | snprintf(service, BUFSIZE, "Repair will disable device" |
1095 | " path 0x%x on CU", sense->fmt.f71.md[1]); | |
b6cba4ee | 1096 | else |
ab640db0 CO |
1097 | snprintf(service, BUFSIZE, "Repair will disable device" |
1098 | " paths (0x%x-0x%x) on CU", | |
1099 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1100 | break; |
1101 | case 0x06: | |
1102 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1103 | snprintf(service, BUFSIZE, "Repair will disable " |
1104 | "library path 0x%x on CU", | |
1105 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1106 | else |
ab640db0 CO |
1107 | snprintf(service, BUFSIZE, "Repair will disable " |
1108 | "library paths (0x%x-0x%x) on CU", | |
1109 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1110 | break; |
1111 | case 0x07: | |
ab640db0 | 1112 | snprintf(service, BUFSIZE, "Repair will disable access to CU"); |
b6cba4ee SB |
1113 | break; |
1114 | default: | |
ab640db0 CO |
1115 | snprintf(service, BUFSIZE, "0x%02x", |
1116 | sense->fmt.f71.smc); | |
b6cba4ee | 1117 | } |
ab640db0 CO |
1118 | |
1119 | dev_warn (&device->cdev->dev, "I/O subsystem information: exception" | |
1120 | " %s, service %s\n", exception, service); | |
1121 | out_nomem: | |
1122 | kfree(exception); | |
1123 | kfree(service); | |
b6cba4ee SB |
1124 | } |
1125 | ||
1126 | /* | |
1127 | * Print an Device Subsystem Service Information Message (message code f2) | |
1128 | */ | |
1129 | static void | |
1130 | tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb) | |
1131 | { | |
1132 | struct tape_3590_sense *sense; | |
ab640db0 CO |
1133 | char *exception, *service; |
1134 | ||
1135 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1136 | service = kmalloc(BUFSIZE, GFP_ATOMIC); | |
1137 | ||
1138 | if (!exception || !service) | |
1139 | goto out_nomem; | |
b6cba4ee SB |
1140 | |
1141 | sense = (struct tape_3590_sense *) irb->ecw; | |
1142 | /* Exception Message */ | |
1143 | switch (sense->fmt.f71.emc) { | |
1144 | case 0x01: | |
ab640db0 | 1145 | snprintf(exception, BUFSIZE, "Effect of failure is unknown"); |
b6cba4ee SB |
1146 | break; |
1147 | case 0x02: | |
ab640db0 CO |
1148 | snprintf(exception, BUFSIZE, "DV Exception - no performance" |
1149 | " impact"); | |
b6cba4ee SB |
1150 | break; |
1151 | case 0x03: | |
ab640db0 CO |
1152 | snprintf(exception, BUFSIZE, "DV Exception on channel " |
1153 | "interface 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1154 | break; |
1155 | case 0x04: | |
ab640db0 CO |
1156 | snprintf(exception, BUFSIZE, "DV Exception on loader 0x%02x", |
1157 | sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1158 | break; |
1159 | case 0x05: | |
ab640db0 CO |
1160 | snprintf(exception, BUFSIZE, "DV Exception on message display" |
1161 | " 0x%02x", sense->fmt.f71.md[0]); | |
b6cba4ee SB |
1162 | break; |
1163 | case 0x06: | |
ab640db0 | 1164 | snprintf(exception, BUFSIZE, "DV Exception in tape path"); |
b6cba4ee SB |
1165 | break; |
1166 | case 0x07: | |
ab640db0 | 1167 | snprintf(exception, BUFSIZE, "DV Exception in drive"); |
b6cba4ee SB |
1168 | break; |
1169 | default: | |
ab640db0 CO |
1170 | snprintf(exception, BUFSIZE, "0x%02x", |
1171 | sense->fmt.f71.emc); | |
b6cba4ee SB |
1172 | } |
1173 | /* Service Message */ | |
1174 | switch (sense->fmt.f71.smc) { | |
1175 | case 0x01: | |
ab640db0 | 1176 | snprintf(service, BUFSIZE, "Repair impact is unknown"); |
b6cba4ee SB |
1177 | break; |
1178 | case 0x02: | |
ab640db0 CO |
1179 | snprintf(service, BUFSIZE, "Repair will not impact device " |
1180 | "performance"); | |
b6cba4ee SB |
1181 | break; |
1182 | case 0x03: | |
1183 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1184 | snprintf(service, BUFSIZE, "Repair will disable " |
1185 | "channel path 0x%x on DV", | |
1186 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1187 | else |
ab640db0 CO |
1188 | snprintf(service, BUFSIZE, "Repair will disable " |
1189 | "channel path (0x%x-0x%x) on DV", | |
1190 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1191 | break; |
1192 | case 0x04: | |
1193 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1194 | snprintf(service, BUFSIZE, "Repair will disable " |
1195 | "interface 0x%x on DV", sense->fmt.f71.md[1]); | |
b6cba4ee | 1196 | else |
ab640db0 CO |
1197 | snprintf(service, BUFSIZE, "Repair will disable " |
1198 | "interfaces (0x%x-0x%x) on DV", | |
1199 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1200 | break; |
1201 | case 0x05: | |
1202 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1203 | snprintf(service, BUFSIZE, "Repair will disable loader" |
1204 | " 0x%x on DV", sense->fmt.f71.md[1]); | |
b6cba4ee | 1205 | else |
ab640db0 CO |
1206 | snprintf(service, BUFSIZE, "Repair will disable loader" |
1207 | " (0x%x-0x%x) on DV", | |
1208 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1209 | break; |
1210 | case 0x07: | |
ab640db0 | 1211 | snprintf(service, BUFSIZE, "Repair will disable access to DV"); |
b6cba4ee SB |
1212 | break; |
1213 | case 0x08: | |
1214 | if (sense->fmt.f71.mdf == 0) | |
ab640db0 CO |
1215 | snprintf(service, BUFSIZE, "Repair will disable " |
1216 | "message display 0x%x on DV", | |
1217 | sense->fmt.f71.md[1]); | |
b6cba4ee | 1218 | else |
ab640db0 CO |
1219 | snprintf(service, BUFSIZE, "Repair will disable " |
1220 | "message displays (0x%x-0x%x) on DV", | |
1221 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); | |
b6cba4ee SB |
1222 | break; |
1223 | case 0x09: | |
ab640db0 | 1224 | snprintf(service, BUFSIZE, "Clean DV"); |
b6cba4ee SB |
1225 | break; |
1226 | default: | |
ab640db0 CO |
1227 | snprintf(service, BUFSIZE, "0x%02x", |
1228 | sense->fmt.f71.smc); | |
b6cba4ee | 1229 | } |
ab640db0 CO |
1230 | |
1231 | dev_warn (&device->cdev->dev, "Device subsystem information: exception" | |
1232 | " %s, service %s\n", exception, service); | |
1233 | out_nomem: | |
1234 | kfree(exception); | |
1235 | kfree(service); | |
b6cba4ee SB |
1236 | } |
1237 | ||
1238 | /* | |
1239 | * Print standard ERA Message | |
1240 | */ | |
1241 | static void | |
1242 | tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) | |
1243 | { | |
1244 | struct tape_3590_sense *sense; | |
1245 | ||
1246 | sense = (struct tape_3590_sense *) irb->ecw; | |
1247 | if (sense->mc == 0) | |
1248 | return; | |
1249 | if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) { | |
1250 | if (tape_3590_msg[sense->mc] != NULL) | |
ab640db0 CO |
1251 | dev_warn (&device->cdev->dev, "The tape unit has " |
1252 | "issued sense message %s\n", | |
1253 | tape_3590_msg[sense->mc]); | |
1254 | else | |
1255 | dev_warn (&device->cdev->dev, "The tape unit has " | |
1256 | "issued an unknown sense message code 0x%x\n", | |
1257 | sense->mc); | |
b6cba4ee SB |
1258 | return; |
1259 | } | |
1260 | if (sense->mc == 0xf0) { | |
1261 | /* Standard Media Information Message */ | |
ab640db0 CO |
1262 | dev_warn (&device->cdev->dev, "MIM SEV=%i, MC=%02x, ES=%x/%x, " |
1263 | "RC=%02x-%04x-%02x\n", sense->fmt.f70.sev, sense->mc, | |
1264 | sense->fmt.f70.emc, sense->fmt.f70.smc, | |
1265 | sense->fmt.f70.refcode, sense->fmt.f70.mid, | |
1266 | sense->fmt.f70.fid); | |
b6cba4ee SB |
1267 | tape_3590_print_mim_msg_f0(device, irb); |
1268 | return; | |
1269 | } | |
1270 | if (sense->mc == 0xf1) { | |
1271 | /* Standard I/O Subsystem Service Information Message */ | |
ab640db0 CO |
1272 | dev_warn (&device->cdev->dev, "IOSIM SEV=%i, DEVTYPE=3590/%02x," |
1273 | " MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", | |
1274 | sense->fmt.f71.sev, device->cdev->id.dev_model, | |
1275 | sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, | |
1276 | sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, | |
1277 | sense->fmt.f71.refcode3); | |
b6cba4ee SB |
1278 | tape_3590_print_io_sim_msg_f1(device, irb); |
1279 | return; | |
1280 | } | |
1281 | if (sense->mc == 0xf2) { | |
1282 | /* Standard Device Service Information Message */ | |
ab640db0 CO |
1283 | dev_warn (&device->cdev->dev, "DEVSIM SEV=%i, DEVTYPE=3590/%02x" |
1284 | ", MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", | |
1285 | sense->fmt.f71.sev, device->cdev->id.dev_model, | |
1286 | sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, | |
1287 | sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, | |
1288 | sense->fmt.f71.refcode3); | |
b6cba4ee SB |
1289 | tape_3590_print_dev_sim_msg_f2(device, irb); |
1290 | return; | |
1291 | } | |
1292 | if (sense->mc == 0xf3) { | |
1293 | /* Standard Library Service Information Message */ | |
1294 | return; | |
1295 | } | |
ab640db0 CO |
1296 | dev_warn (&device->cdev->dev, "The tape unit has issued an unknown " |
1297 | "sense message code %x\n", sense->mc); | |
b6cba4ee SB |
1298 | } |
1299 | ||
cced1dd4 MH |
1300 | static int tape_3590_crypt_error(struct tape_device *device, |
1301 | struct tape_request *request, struct irb *irb) | |
1302 | { | |
160fbf2e | 1303 | u8 cu_rc; |
cced1dd4 | 1304 | u16 ekm_rc2; |
2a0217d5 | 1305 | char *sense; |
cced1dd4 MH |
1306 | |
1307 | sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data; | |
cced1dd4 | 1308 | cu_rc = sense[0]; |
cced1dd4 MH |
1309 | ekm_rc2 = *((u16*) &sense[10]); |
1310 | if ((cu_rc == 0) && (ekm_rc2 == 0xee31)) | |
1311 | /* key not defined on EKM */ | |
1312 | return tape_3590_erp_basic(device, request, irb, -EKEYREJECTED); | |
1313 | if ((cu_rc == 1) || (cu_rc == 2)) | |
1314 | /* No connection to EKM */ | |
1315 | return tape_3590_erp_basic(device, request, irb, -ENOTCONN); | |
1316 | ||
ab640db0 CO |
1317 | dev_err (&device->cdev->dev, "The tape unit failed to obtain the " |
1318 | "encryption key from EKM\n"); | |
cced1dd4 MH |
1319 | |
1320 | return tape_3590_erp_basic(device, request, irb, -ENOKEY); | |
1321 | } | |
1322 | ||
b6cba4ee SB |
1323 | /* |
1324 | * 3590 error Recovery routine: | |
1325 | * If possible, it tries to recover from the error. If this is not possible, | |
1326 | * inform the user about the problem. | |
1327 | */ | |
1328 | static int | |
1329 | tape_3590_unit_check(struct tape_device *device, struct tape_request *request, | |
1330 | struct irb *irb) | |
1331 | { | |
1332 | struct tape_3590_sense *sense; | |
b6cba4ee | 1333 | |
b6cba4ee SB |
1334 | sense = (struct tape_3590_sense *) irb->ecw; |
1335 | ||
cced1dd4 MH |
1336 | DBF_EVENT(6, "Unit Check: RQC = %x\n", sense->rc_rqc); |
1337 | ||
b6cba4ee SB |
1338 | /* |
1339 | * First check all RC-QRCs where we want to do something special | |
1340 | * - "break": basic error recovery is done | |
1341 | * - "goto out:": just print error message if available | |
1342 | */ | |
b6cba4ee SB |
1343 | switch (sense->rc_rqc) { |
1344 | ||
1345 | case 0x1110: | |
1346 | tape_3590_print_era_msg(device, irb); | |
1347 | return tape_3590_erp_read_buf_log(device, request, irb); | |
1348 | ||
1349 | case 0x2011: | |
1350 | tape_3590_print_era_msg(device, irb); | |
1351 | return tape_3590_erp_read_alternate(device, request, irb); | |
1352 | ||
1353 | case 0x2230: | |
1354 | case 0x2231: | |
1355 | tape_3590_print_era_msg(device, irb); | |
1356 | return tape_3590_erp_special_interrupt(device, request, irb); | |
cced1dd4 MH |
1357 | case 0x2240: |
1358 | return tape_3590_crypt_error(device, request, irb); | |
b6cba4ee SB |
1359 | |
1360 | case 0x3010: | |
1361 | DBF_EVENT(2, "(%08x): Backward at Beginning of Partition\n", | |
1362 | device->cdev_id); | |
1363 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1364 | case 0x3012: | |
1365 | DBF_EVENT(2, "(%08x): Forward at End of Partition\n", | |
1366 | device->cdev_id); | |
1367 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1368 | case 0x3020: | |
1369 | DBF_EVENT(2, "(%08x): End of Data Mark\n", device->cdev_id); | |
1370 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); | |
1371 | ||
1372 | case 0x3122: | |
1373 | DBF_EVENT(2, "(%08x): Rewind Unload initiated\n", | |
1374 | device->cdev_id); | |
1375 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1376 | case 0x3123: | |
1377 | DBF_EVENT(2, "(%08x): Rewind Unload complete\n", | |
1378 | device->cdev_id); | |
1379 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 1380 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1381 | return tape_3590_erp_basic(device, request, irb, 0); |
1382 | ||
1383 | case 0x4010: | |
1384 | /* | |
1385 | * print additional msg since default msg | |
1386 | * "device intervention" is not very meaningfull | |
1387 | */ | |
b6cba4ee | 1388 | tape_med_state_set(device, MS_UNLOADED); |
cced1dd4 | 1389 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1390 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
1391 | case 0x4012: /* Device Long Busy */ | |
cced1dd4 MH |
1392 | /* XXX: Also use long busy handling here? */ |
1393 | DBF_EVENT(6, "(%08x): LONG BUSY\n", device->cdev_id); | |
b6cba4ee | 1394 | tape_3590_print_era_msg(device, irb); |
cced1dd4 MH |
1395 | return tape_3590_erp_basic(device, request, irb, -EBUSY); |
1396 | case 0x4014: | |
1397 | DBF_EVENT(6, "(%08x): Crypto LONG BUSY\n", device->cdev_id); | |
b6cba4ee SB |
1398 | return tape_3590_erp_long_busy(device, request, irb); |
1399 | ||
1400 | case 0x5010: | |
1401 | if (sense->rac == 0xd0) { | |
1402 | /* Swap */ | |
1403 | tape_3590_print_era_msg(device, irb); | |
1404 | return tape_3590_erp_swap(device, request, irb); | |
1405 | } | |
1406 | if (sense->rac == 0x26) { | |
1407 | /* Read Opposite */ | |
1408 | tape_3590_print_era_msg(device, irb); | |
1409 | return tape_3590_erp_read_opposite(device, request, | |
1410 | irb); | |
1411 | } | |
1412 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1413 | case 0x5020: | |
1414 | case 0x5021: | |
1415 | case 0x5022: | |
1416 | case 0x5040: | |
1417 | case 0x5041: | |
1418 | case 0x5042: | |
1419 | tape_3590_print_era_msg(device, irb); | |
1420 | return tape_3590_erp_swap(device, request, irb); | |
1421 | ||
1422 | case 0x5110: | |
1423 | case 0x5111: | |
1424 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); | |
1425 | ||
1426 | case 0x5120: | |
1427 | case 0x1120: | |
1428 | tape_med_state_set(device, MS_UNLOADED); | |
cced1dd4 | 1429 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
b6cba4ee SB |
1430 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
1431 | ||
1432 | case 0x6020: | |
b6cba4ee SB |
1433 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); |
1434 | ||
1435 | case 0x8011: | |
b6cba4ee SB |
1436 | return tape_3590_erp_basic(device, request, irb, -EPERM); |
1437 | case 0x8013: | |
ab640db0 CO |
1438 | dev_warn (&device->cdev->dev, "A different host has privileged" |
1439 | " access to the tape unit\n"); | |
b6cba4ee SB |
1440 | return tape_3590_erp_basic(device, request, irb, -EPERM); |
1441 | default: | |
1442 | return tape_3590_erp_basic(device, request, irb, -EIO); | |
1443 | } | |
1444 | } | |
1445 | ||
1446 | /* | |
1447 | * 3590 interrupt handler: | |
1448 | */ | |
1449 | static int | |
1450 | tape_3590_irq(struct tape_device *device, struct tape_request *request, | |
1451 | struct irb *irb) | |
1452 | { | |
1453 | if (request == NULL) | |
1454 | return tape_3590_unsolicited_irq(device, irb); | |
1455 | ||
23d805b6 PO |
1456 | if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) && |
1457 | (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) && | |
1458 | (request->op == TO_WRI)) { | |
b6cba4ee SB |
1459 | /* Write at end of volume */ |
1460 | DBF_EVENT(2, "End of volume\n"); | |
1461 | return tape_3590_erp_failed(device, request, irb, -ENOSPC); | |
1462 | } | |
1463 | ||
23d805b6 | 1464 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
b6cba4ee SB |
1465 | return tape_3590_unit_check(device, request, irb); |
1466 | ||
23d805b6 PO |
1467 | if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) { |
1468 | if (irb->scsw.cmd.dstat == DEV_STAT_UNIT_EXCEP) { | |
b6cba4ee SB |
1469 | if (request->op == TO_FSB || request->op == TO_BSB) |
1470 | request->rescnt++; | |
1471 | else | |
1472 | DBF_EVENT(5, "Unit Exception!\n"); | |
1473 | } | |
1474 | ||
1475 | return tape_3590_done(device, request); | |
1476 | } | |
1477 | ||
23d805b6 | 1478 | if (irb->scsw.cmd.dstat & DEV_STAT_CHN_END) { |
6774def6 | 1479 | DBF_EVENT(2, "channel end\n"); |
b6cba4ee SB |
1480 | return TAPE_IO_PENDING; |
1481 | } | |
1482 | ||
23d805b6 | 1483 | if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
b6cba4ee SB |
1484 | DBF_EVENT(2, "Unit Attention when busy..\n"); |
1485 | return TAPE_IO_PENDING; | |
1486 | } | |
1487 | ||
1488 | DBF_EVENT(6, "xunknownirq\n"); | |
ab640db0 | 1489 | tape_dump_sense_dbf(device, request, irb); |
b6cba4ee SB |
1490 | return TAPE_IO_STOP; |
1491 | } | |
1492 | ||
e2963062 MH |
1493 | |
1494 | static int tape_3590_read_dev_chars(struct tape_device *device, | |
1495 | struct tape_3590_rdc_data *rdc_data) | |
1496 | { | |
1497 | int rc; | |
1498 | struct tape_request *request; | |
1499 | ||
1500 | request = tape_alloc_request(1, sizeof(*rdc_data)); | |
1501 | if (IS_ERR(request)) | |
1502 | return PTR_ERR(request); | |
1503 | request->op = TO_RDC; | |
1504 | tape_ccw_end(request->cpaddr, CCW_CMD_RDC, sizeof(*rdc_data), | |
1505 | request->cpdata); | |
1506 | rc = tape_do_io(device, request); | |
1507 | if (rc == 0) | |
1508 | memcpy(rdc_data, request->cpdata, sizeof(*rdc_data)); | |
1509 | tape_free_request(request); | |
1510 | return rc; | |
1511 | } | |
1512 | ||
b6cba4ee SB |
1513 | /* |
1514 | * Setup device function | |
1515 | */ | |
1516 | static int | |
1517 | tape_3590_setup_device(struct tape_device *device) | |
1518 | { | |
1519 | int rc; | |
1520 | struct tape_3590_disc_data *data; | |
e2963062 | 1521 | struct tape_3590_rdc_data *rdc_data; |
b6cba4ee SB |
1522 | |
1523 | DBF_EVENT(6, "3590 device setup\n"); | |
cced1dd4 | 1524 | data = kzalloc(sizeof(struct tape_3590_disc_data), GFP_KERNEL | GFP_DMA); |
b6cba4ee SB |
1525 | if (data == NULL) |
1526 | return -ENOMEM; | |
1527 | data->read_back_op = READ_PREVIOUS; | |
1528 | device->discdata = data; | |
1529 | ||
e2963062 | 1530 | rdc_data = kmalloc(sizeof(*rdc_data), GFP_KERNEL | GFP_DMA); |
cced1dd4 MH |
1531 | if (!rdc_data) { |
1532 | rc = -ENOMEM; | |
1533 | goto fail_kmalloc; | |
1534 | } | |
e2963062 | 1535 | rc = tape_3590_read_dev_chars(device, rdc_data); |
cced1dd4 MH |
1536 | if (rc) { |
1537 | DBF_LH(3, "Read device characteristics failed!\n"); | |
1783e60f | 1538 | goto fail_rdc_data; |
cced1dd4 MH |
1539 | } |
1540 | rc = tape_std_assign(device); | |
1541 | if (rc) | |
1542 | goto fail_rdc_data; | |
e2963062 | 1543 | if (rdc_data->data[31] == 0x13) { |
cced1dd4 MH |
1544 | data->crypt_info.capability |= TAPE390_CRYPT_SUPPORTED_MASK; |
1545 | tape_3592_disable_crypt(device); | |
1546 | } else { | |
1547 | DBF_EVENT(6, "Device has NO crypto support\n"); | |
b6cba4ee | 1548 | } |
cced1dd4 MH |
1549 | /* Try to find out if medium is loaded */ |
1550 | rc = tape_3590_sense_medium(device); | |
1551 | if (rc) { | |
1552 | DBF_LH(3, "3590 medium sense returned %d\n", rc); | |
1553 | goto fail_rdc_data; | |
1554 | } | |
1555 | return 0; | |
b6cba4ee | 1556 | |
cced1dd4 MH |
1557 | fail_rdc_data: |
1558 | kfree(rdc_data); | |
1559 | fail_kmalloc: | |
1560 | kfree(data); | |
b6cba4ee SB |
1561 | return rc; |
1562 | } | |
1563 | ||
1564 | /* | |
1565 | * Cleanup device function | |
1566 | */ | |
1567 | static void | |
1568 | tape_3590_cleanup_device(struct tape_device *device) | |
1569 | { | |
6dca467a | 1570 | flush_workqueue(tape_3590_wq); |
b6cba4ee SB |
1571 | tape_std_unassign(device); |
1572 | ||
1573 | kfree(device->discdata); | |
1574 | device->discdata = NULL; | |
1575 | } | |
1576 | ||
1577 | /* | |
1578 | * List of 3590 magnetic tape commands. | |
1579 | */ | |
1580 | static tape_mtop_fn tape_3590_mtop[TAPE_NR_MTOPS] = { | |
1581 | [MTRESET] = tape_std_mtreset, | |
1582 | [MTFSF] = tape_std_mtfsf, | |
1583 | [MTBSF] = tape_std_mtbsf, | |
1584 | [MTFSR] = tape_std_mtfsr, | |
1585 | [MTBSR] = tape_std_mtbsr, | |
1586 | [MTWEOF] = tape_std_mtweof, | |
1587 | [MTREW] = tape_std_mtrew, | |
1588 | [MTOFFL] = tape_std_mtoffl, | |
1589 | [MTNOP] = tape_std_mtnop, | |
1590 | [MTRETEN] = tape_std_mtreten, | |
1591 | [MTBSFM] = tape_std_mtbsfm, | |
1592 | [MTFSFM] = tape_std_mtfsfm, | |
1593 | [MTEOM] = tape_std_mteom, | |
1594 | [MTERASE] = tape_std_mterase, | |
1595 | [MTRAS1] = NULL, | |
1596 | [MTRAS2] = NULL, | |
1597 | [MTRAS3] = NULL, | |
1598 | [MTSETBLK] = tape_std_mtsetblk, | |
1599 | [MTSETDENSITY] = NULL, | |
1600 | [MTSEEK] = tape_3590_mtseek, | |
1601 | [MTTELL] = tape_3590_mttell, | |
1602 | [MTSETDRVBUFFER] = NULL, | |
1603 | [MTFSS] = NULL, | |
1604 | [MTBSS] = NULL, | |
1605 | [MTWSM] = NULL, | |
1606 | [MTLOCK] = NULL, | |
1607 | [MTUNLOCK] = NULL, | |
1608 | [MTLOAD] = tape_std_mtload, | |
1609 | [MTUNLOAD] = tape_std_mtunload, | |
1610 | [MTCOMPRESSION] = tape_std_mtcompression, | |
1611 | [MTSETPART] = NULL, | |
1612 | [MTMKPART] = NULL | |
1613 | }; | |
1614 | ||
1615 | /* | |
1616 | * Tape discipline structure for 3590. | |
1617 | */ | |
1618 | static struct tape_discipline tape_discipline_3590 = { | |
1619 | .owner = THIS_MODULE, | |
1620 | .setup_device = tape_3590_setup_device, | |
1621 | .cleanup_device = tape_3590_cleanup_device, | |
1622 | .process_eov = tape_std_process_eov, | |
1623 | .irq = tape_3590_irq, | |
1624 | .read_block = tape_std_read_block, | |
1625 | .write_block = tape_std_write_block, | |
b6cba4ee SB |
1626 | .ioctl_fn = tape_3590_ioctl, |
1627 | .mtop_array = tape_3590_mtop | |
1628 | }; | |
1629 | ||
1630 | static struct ccw_device_id tape_3590_ids[] = { | |
1631 | {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590}, | |
2cc924b8 | 1632 | {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592}, |
b6cba4ee SB |
1633 | { /* end of list */ } |
1634 | }; | |
1635 | ||
1636 | static int | |
1637 | tape_3590_online(struct ccw_device *cdev) | |
1638 | { | |
dff59b64 | 1639 | return tape_generic_online(dev_get_drvdata(&cdev->dev), |
b6cba4ee SB |
1640 | &tape_discipline_3590); |
1641 | } | |
1642 | ||
b6cba4ee | 1643 | static struct ccw_driver tape_3590_driver = { |
3bda058b SO |
1644 | .driver = { |
1645 | .name = "tape_3590", | |
1646 | .owner = THIS_MODULE, | |
1647 | }, | |
b6cba4ee SB |
1648 | .ids = tape_3590_ids, |
1649 | .probe = tape_generic_probe, | |
1650 | .remove = tape_generic_remove, | |
4d7a3cdf | 1651 | .set_offline = tape_generic_offline, |
b6cba4ee | 1652 | .set_online = tape_3590_online, |
3ef32e62 | 1653 | .freeze = tape_generic_pm_suspend, |
420f42ec | 1654 | .int_class = IRQIO_TAP, |
b6cba4ee SB |
1655 | }; |
1656 | ||
1657 | /* | |
1658 | * Setup discipline structure. | |
1659 | */ | |
1660 | static int | |
1661 | tape_3590_init(void) | |
1662 | { | |
1663 | int rc; | |
1664 | ||
1665 | TAPE_DBF_AREA = debug_register("tape_3590", 2, 2, 4 * sizeof(long)); | |
1666 | debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view); | |
1667 | #ifdef DBF_LIKE_HELL | |
1668 | debug_set_level(TAPE_DBF_AREA, 6); | |
1669 | #endif | |
1670 | ||
1671 | DBF_EVENT(3, "3590 init\n"); | |
6dca467a TH |
1672 | |
1673 | tape_3590_wq = alloc_workqueue("tape_3590", 0, 0); | |
1674 | if (!tape_3590_wq) | |
1675 | return -ENOMEM; | |
1676 | ||
b6cba4ee SB |
1677 | /* Register driver for 3590 tapes. */ |
1678 | rc = ccw_driver_register(&tape_3590_driver); | |
6dca467a TH |
1679 | if (rc) { |
1680 | destroy_workqueue(tape_3590_wq); | |
b6cba4ee | 1681 | DBF_EVENT(3, "3590 init failed\n"); |
6dca467a | 1682 | } else |
b6cba4ee SB |
1683 | DBF_EVENT(3, "3590 registered\n"); |
1684 | return rc; | |
1685 | } | |
1686 | ||
1687 | static void | |
1688 | tape_3590_exit(void) | |
1689 | { | |
1690 | ccw_driver_unregister(&tape_3590_driver); | |
6dca467a | 1691 | destroy_workqueue(tape_3590_wq); |
b6cba4ee SB |
1692 | debug_unregister(TAPE_DBF_AREA); |
1693 | } | |
1694 | ||
1695 | MODULE_DEVICE_TABLE(ccw, tape_3590_ids); | |
1696 | MODULE_AUTHOR("(C) 2001,2006 IBM Corporation"); | |
1697 | MODULE_DESCRIPTION("Linux on zSeries channel attached 3590 tape device driver"); | |
1698 | MODULE_LICENSE("GPL"); | |
1699 | ||
1700 | module_init(tape_3590_init); | |
1701 | module_exit(tape_3590_exit); |