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authorStefan Bader <shbader@de.ibm.com>2006-03-24 06:15:29 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-24 10:33:18 -0500
commitb6cba4ee31e7376fa363c4b89ca502ac5e17eac1 (patch)
treeaf8756fdb9587d84df424b020b08af8253c6eb9c /drivers
parent5f38433885245dce82aa53c20a6b2efbe81ae350 (diff)
[PATCH] s390: 3590 tape driver
Michael Holzheu <holzheu@de.ibm.com>, Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Stefan Bader <shbader@de.ibm.com> Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/s390/Kconfig8
-rw-r--r--drivers/s390/char/Makefile1
-rw-r--r--drivers/s390/char/tape_34xx.c8
-rw-r--r--drivers/s390/char/tape_3590.c1301
-rw-r--r--drivers/s390/char/tape_3590.h124
-rw-r--r--drivers/s390/char/tape_std.h12
6 files changed, 1443 insertions, 11 deletions
diff --git a/drivers/s390/Kconfig b/drivers/s390/Kconfig
index 721787cc5a1c..4d36208ff8de 100644
--- a/drivers/s390/Kconfig
+++ b/drivers/s390/Kconfig
@@ -183,7 +183,13 @@ config S390_TAPE_34XX
183 tape subsystems and 100% compatibles. 183 tape subsystems and 100% compatibles.
184 It is safe to say "Y" here. 184 It is safe to say "Y" here.
185 185
186 186config S390_TAPE_3590
187 tristate "Support for 3590 tape hardware"
188 depends on S390_TAPE
189 help
190 Select this option if you want to access IBM 3590 magnetic
191 tape subsystems and 100% compatibles.
192 It is safe to say "Y" here.
187 193
188config VMLOGRDR 194config VMLOGRDR
189 tristate "Support for the z/VM recording system services (VM only)" 195 tristate "Support for the z/VM recording system services (VM only)"
diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile
index 6377a96735df..0c0162ff6c0c 100644
--- a/drivers/s390/char/Makefile
+++ b/drivers/s390/char/Makefile
@@ -26,4 +26,5 @@ tape-$(CONFIG_PROC_FS) += tape_proc.o
26tape-objs := tape_core.o tape_std.o tape_char.o $(tape-y) 26tape-objs := tape_core.o tape_std.o tape_char.o $(tape-y)
27obj-$(CONFIG_S390_TAPE) += tape.o tape_class.o 27obj-$(CONFIG_S390_TAPE) += tape.o tape_class.o
28obj-$(CONFIG_S390_TAPE_34XX) += tape_34xx.o 28obj-$(CONFIG_S390_TAPE_34XX) += tape_34xx.o
29obj-$(CONFIG_S390_TAPE_3590) += tape_3590.o
29obj-$(CONFIG_MONREADER) += monreader.o 30obj-$(CONFIG_MONREADER) += monreader.o
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index 682039cac15b..d4f2da738078 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -2,8 +2,7 @@
2 * drivers/s390/char/tape_34xx.c 2 * drivers/s390/char/tape_34xx.c
3 * tape device discipline for 3480/3490 tapes. 3 * tape device discipline for 3480/3490 tapes.
4 * 4 *
5 * S390 and zSeries version 5 * Copyright (C) IBM Corp. 2001,2006
6 * Copyright (C) 2001,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Author(s): Carsten Otte <cotte@de.ibm.com> 6 * Author(s): Carsten Otte <cotte@de.ibm.com>
8 * Tuan Ngo-Anh <ngoanh@de.ibm.com> 7 * Tuan Ngo-Anh <ngoanh@de.ibm.com>
9 * Martin Schwidefsky <schwidefsky@de.ibm.com> 8 * Martin Schwidefsky <schwidefsky@de.ibm.com>
@@ -28,11 +27,6 @@
28debug_info_t *TAPE_DBF_AREA = NULL; 27debug_info_t *TAPE_DBF_AREA = NULL;
29EXPORT_SYMBOL(TAPE_DBF_AREA); 28EXPORT_SYMBOL(TAPE_DBF_AREA);
30 29
31enum tape_34xx_type {
32 tape_3480,
33 tape_3490,
34};
35
36#define TAPE34XX_FMT_3480 0 30#define TAPE34XX_FMT_3480 0
37#define TAPE34XX_FMT_3480_2_XF 1 31#define TAPE34XX_FMT_3480_2_XF 1
38#define TAPE34XX_FMT_3480_XF 2 32#define TAPE34XX_FMT_3480_XF 2
diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c
new file mode 100644
index 000000000000..c3915f60a3aa
--- /dev/null
+++ b/drivers/s390/char/tape_3590.c
@@ -0,0 +1,1301 @@
1/*
2 * drivers/s390/char/tape_3590.c
3 * tape device discipline for 3590 tapes.
4 *
5 * Copyright (C) IBM Corp. 2001,2006
6 * Author(s): Stefan Bader <shbader@de.ibm.com>
7 * Michael Holzheu <holzheu@de.ibm.com>
8 * Martin Schwidefsky <schwidefsky@de.ibm.com>
9 */
10
11#include <linux/config.h>
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/bio.h>
15
16#define TAPE_DBF_AREA tape_3590_dbf
17
18#include "tape.h"
19#include "tape_std.h"
20#include "tape_3590.h"
21
22/*
23 * Pointer to debug area.
24 */
25debug_info_t *TAPE_DBF_AREA = NULL;
26EXPORT_SYMBOL(TAPE_DBF_AREA);
27
28/*******************************************************************
29 * Error Recovery fuctions:
30 * - Read Opposite: implemented
31 * - Read Device (buffered) log: BRA
32 * - Read Library log: BRA
33 * - Swap Devices: BRA
34 * - Long Busy: BRA
35 * - Special Intercept: BRA
36 * - Read Alternate: implemented
37 *******************************************************************/
38
39#define PRINTK_HEADER "TAPE_3590: "
40
41static const char *tape_3590_msg[TAPE_3590_MAX_MSG] = {
42 [0x00] = "",
43 [0x10] = "Lost Sense",
44 [0x11] = "Assigned Elsewhere",
45 [0x12] = "Allegiance Reset",
46 [0x13] = "Shared Access Violation",
47 [0x20] = "Command Reject",
48 [0x21] = "Configuration Error",
49 [0x22] = "Protection Exception",
50 [0x23] = "Write Protect",
51 [0x24] = "Write Length",
52 [0x25] = "Read-Only Format",
53 [0x31] = "Beginning of Partition",
54 [0x33] = "End of Partition",
55 [0x34] = "End of Data",
56 [0x35] = "Block not found",
57 [0x40] = "Device Intervention",
58 [0x41] = "Loader Intervention",
59 [0x42] = "Library Intervention",
60 [0x50] = "Write Error",
61 [0x51] = "Erase Error",
62 [0x52] = "Formatting Error",
63 [0x53] = "Read Error",
64 [0x54] = "Unsupported Format",
65 [0x55] = "No Formatting",
66 [0x56] = "Positioning lost",
67 [0x57] = "Read Length",
68 [0x60] = "Unsupported Medium",
69 [0x61] = "Medium Length Error",
70 [0x62] = "Medium removed",
71 [0x64] = "Load Check",
72 [0x65] = "Unload Check",
73 [0x70] = "Equipment Check",
74 [0x71] = "Bus out Check",
75 [0x72] = "Protocol Error",
76 [0x73] = "Interface Error",
77 [0x74] = "Overrun",
78 [0x75] = "Halt Signal",
79 [0x90] = "Device fenced",
80 [0x91] = "Device Path fenced",
81 [0xa0] = "Volume misplaced",
82 [0xa1] = "Volume inaccessible",
83 [0xa2] = "Volume in input",
84 [0xa3] = "Volume ejected",
85 [0xa4] = "All categories reserved",
86 [0xa5] = "Duplicate Volume",
87 [0xa6] = "Library Manager Offline",
88 [0xa7] = "Library Output Station full",
89 [0xa8] = "Vision System non-operational",
90 [0xa9] = "Library Manager Equipment Check",
91 [0xaa] = "Library Equipment Check",
92 [0xab] = "All Library Cells full",
93 [0xac] = "No Cleaner Volumes in Library",
94 [0xad] = "I/O Station door open",
95 [0xae] = "Subsystem environmental alert",
96};
97
98/*
99 * 3590 IOCTL Overload
100 */
101static int
102tape_3590_ioctl(struct tape_device *device, unsigned int cmd, unsigned long arg)
103{
104 switch (cmd) {
105 case TAPE390_DISPLAY: {
106 struct display_struct disp;
107
108 if (copy_from_user(&disp, (char __user *) arg, sizeof(disp)))
109 return -EFAULT;
110
111 return tape_std_display(device, &disp);
112 }
113 default:
114 return -EINVAL; /* no additional ioctls */
115 }
116}
117
118/*
119 * SENSE Medium: Get Sense data about medium state
120 */
121static int
122tape_3590_sense_medium(struct tape_device *device)
123{
124 struct tape_request *request;
125
126 request = tape_alloc_request(1, 128);
127 if (IS_ERR(request))
128 return PTR_ERR(request);
129 request->op = TO_MSEN;
130 tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata);
131 return tape_do_io_free(device, request);
132}
133
134/*
135 * MTTELL: Tell block. Return the number of block relative to current file.
136 */
137static int
138tape_3590_mttell(struct tape_device *device, int mt_count)
139{
140 __u64 block_id;
141 int rc;
142
143 rc = tape_std_read_block_id(device, &block_id);
144 if (rc)
145 return rc;
146 return block_id >> 32;
147}
148
149/*
150 * MTSEEK: seek to the specified block.
151 */
152static int
153tape_3590_mtseek(struct tape_device *device, int count)
154{
155 struct tape_request *request;
156
157 DBF_EVENT(6, "xsee id: %x\n", count);
158 request = tape_alloc_request(3, 4);
159 if (IS_ERR(request))
160 return PTR_ERR(request);
161 request->op = TO_LBL;
162 tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
163 *(__u32 *) request->cpdata = count;
164 tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata);
165 tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL);
166 return tape_do_io_free(device, request);
167}
168
169/*
170 * Read Opposite Error Recovery Function:
171 * Used, when Read Forward does not work
172 */
173static void
174tape_3590_read_opposite(struct tape_device *device,
175 struct tape_request *request)
176{
177 struct tape_3590_disc_data *data;
178
179 /*
180 * We have allocated 4 ccws in tape_std_read, so we can now
181 * transform the request to a read backward, followed by a
182 * forward space block.
183 */
184 request->op = TO_RBA;
185 tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
186 data = device->discdata;
187 tape_ccw_cc_idal(request->cpaddr + 1, data->read_back_op,
188 device->char_data.idal_buf);
189 tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL);
190 tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL);
191 DBF_EVENT(6, "xrop ccwg\n");
192}
193
194/*
195 * Read Attention Msg
196 * This should be done after an interrupt with attention bit (0x80)
197 * in device state.
198 *
199 * After a "read attention message" request there are two possible
200 * results:
201 *
202 * 1. A unit check is presented, when attention sense is present (e.g. when
203 * a medium has been unloaded). The attention sense comes then
204 * together with the unit check. The recovery action is either "retry"
205 * (in case there is an attention message pending) or "permanent error".
206 *
207 * 2. The attention msg is written to the "read subsystem data" buffer.
208 * In this case we probably should print it to the console.
209 */
210static int
211tape_3590_read_attmsg(struct tape_device *device)
212{
213 struct tape_request *request;
214 char *buf;
215
216 request = tape_alloc_request(3, 4096);
217 if (IS_ERR(request))
218 return PTR_ERR(request);
219 request->op = TO_READ_ATTMSG;
220 buf = request->cpdata;
221 buf[0] = PREP_RD_SS_DATA;
222 buf[6] = RD_ATTMSG; /* read att msg */
223 tape_ccw_cc(request->cpaddr, PERFORM_SS_FUNC, 12, buf);
224 tape_ccw_cc(request->cpaddr + 1, READ_SS_DATA, 4096 - 12, buf + 12);
225 tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL);
226 return tape_do_io_free(device, request);
227}
228
229/*
230 * These functions are used to schedule follow-up actions from within an
231 * interrupt context (like unsolicited interrupts).
232 */
233static void
234tape_3590_work_handler(void *data)
235{
236 struct {
237 struct tape_device *device;
238 enum tape_op op;
239 struct work_struct work;
240 } *p = data;
241
242 switch (p->op) {
243 case TO_MSEN:
244 tape_3590_sense_medium(p->device);
245 break;
246 case TO_READ_ATTMSG:
247 tape_3590_read_attmsg(p->device);
248 break;
249 default:
250 DBF_EVENT(3, "T3590: work handler undefined for "
251 "operation 0x%02x\n", p->op);
252 }
253 tape_put_device(p->device);
254 kfree(p);
255}
256
257static int
258tape_3590_schedule_work(struct tape_device *device, enum tape_op op)
259{
260 struct {
261 struct tape_device *device;
262 enum tape_op op;
263 struct work_struct work;
264 } *p;
265
266 if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL)
267 return -ENOMEM;
268
269 INIT_WORK(&p->work, tape_3590_work_handler, p);
270
271 p->device = tape_get_device_reference(device);
272 p->op = op;
273
274 schedule_work(&p->work);
275 return 0;
276}
277
278#ifdef CONFIG_S390_TAPE_BLOCK
279/*
280 * Tape Block READ
281 */
282static struct tape_request *
283tape_3590_bread(struct tape_device *device, struct request *req)
284{
285 struct tape_request *request;
286 struct ccw1 *ccw;
287 int count = 0, start_block, i;
288 unsigned off;
289 char *dst;
290 struct bio_vec *bv;
291 struct bio *bio;
292
293 DBF_EVENT(6, "xBREDid:");
294 start_block = req->sector >> TAPEBLOCK_HSEC_S2B;
295 DBF_EVENT(6, "start_block = %i\n", start_block);
296
297 rq_for_each_bio(bio, req) {
298 bio_for_each_segment(bv, bio, i) {
299 count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9);
300 }
301 }
302 request = tape_alloc_request(2 + count + 1, 4);
303 if (IS_ERR(request))
304 return request;
305 request->op = TO_BLOCK;
306 *(__u32 *) request->cpdata = start_block;
307 ccw = request->cpaddr;
308 ccw = tape_ccw_cc(ccw, MODE_SET_DB, 1, device->modeset_byte);
309
310 /*
311 * We always setup a nop after the mode set ccw. This slot is
312 * used in tape_std_check_locate to insert a locate ccw if the
313 * current tape position doesn't match the start block to be read.
314 */
315 ccw = tape_ccw_cc(ccw, NOP, 0, NULL);
316
317 rq_for_each_bio(bio, req) {
318 bio_for_each_segment(bv, bio, i) {
319 dst = kmap(bv->bv_page) + bv->bv_offset;
320 for (off = 0; off < bv->bv_len;
321 off += TAPEBLOCK_HSEC_SIZE) {
322 ccw->flags = CCW_FLAG_CC;
323 ccw->cmd_code = READ_FORWARD;
324 ccw->count = TAPEBLOCK_HSEC_SIZE;
325 set_normalized_cda(ccw, (void *) __pa(dst));
326 ccw++;
327 dst += TAPEBLOCK_HSEC_SIZE;
328 }
329 if (off > bv->bv_len)
330 BUG();
331 }
332 }
333 ccw = tape_ccw_end(ccw, NOP, 0, NULL);
334 DBF_EVENT(6, "xBREDccwg\n");
335 return request;
336}
337
338static void
339tape_3590_free_bread(struct tape_request *request)
340{
341 struct ccw1 *ccw;
342
343 /* Last ccw is a nop and doesn't need clear_normalized_cda */
344 for (ccw = request->cpaddr; ccw->flags & CCW_FLAG_CC; ccw++)
345 if (ccw->cmd_code == READ_FORWARD)
346 clear_normalized_cda(ccw);
347 tape_free_request(request);
348}
349
350/*
351 * check_locate is called just before the tape request is passed to
352 * the common io layer for execution. It has to check the current
353 * tape position and insert a locate ccw if it doesn't match the
354 * start block for the request.
355 */
356static void
357tape_3590_check_locate(struct tape_device *device, struct tape_request *request)
358{
359 __u32 *start_block;
360
361 start_block = (__u32 *) request->cpdata;
362 if (*start_block != device->blk_data.block_position) {
363 /* Add the start offset of the file to get the real block. */
364 *start_block += device->bof;
365 tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata);
366 }
367}
368#endif
369
370/*
371 * The done handler is called at device/channel end and wakes up the sleeping
372 * process
373 */
374static int
375tape_3590_done(struct tape_device *device, struct tape_request *request)
376{
377 struct tape_3590_med_sense *sense;
378
379 DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]);
380
381 switch (request->op) {
382 case TO_BSB:
383 case TO_BSF:
384 case TO_DSE:
385 case TO_FSB:
386 case TO_FSF:
387 case TO_LBL:
388 case TO_RFO:
389 case TO_RBA:
390 case TO_REW:
391 case TO_WRI:
392 case TO_WTM:
393 case TO_BLOCK:
394 case TO_LOAD:
395 tape_med_state_set(device, MS_LOADED);
396 break;
397 case TO_RUN:
398 tape_med_state_set(device, MS_UNLOADED);
399 break;
400 case TO_MSEN:
401 sense = (struct tape_3590_med_sense *) request->cpdata;
402 if (sense->masst == MSENSE_UNASSOCIATED)
403 tape_med_state_set(device, MS_UNLOADED);
404 if (sense->masst == MSENSE_ASSOCIATED_MOUNT)
405 tape_med_state_set(device, MS_LOADED);
406 break;
407 case TO_RBI: /* RBI seems to succeed even without medium loaded. */
408 case TO_NOP: /* Same to NOP. */
409 case TO_READ_CONFIG:
410 case TO_READ_ATTMSG:
411 case TO_DIS:
412 case TO_ASSIGN:
413 case TO_UNASSIGN:
414 break;
415 case TO_SIZE:
416 break;
417 }
418 return TAPE_IO_SUCCESS;
419}
420
421/*
422 * This fuction is called, when error recovery was successfull
423 */
424static inline int
425tape_3590_erp_succeded(struct tape_device *device, struct tape_request *request)
426{
427 DBF_EVENT(3, "Error Recovery successfull for %s\n",
428 tape_op_verbose[request->op]);
429 return tape_3590_done(device, request);
430}
431
432/*
433 * This fuction is called, when error recovery was not successfull
434 */
435static inline int
436tape_3590_erp_failed(struct tape_device *device, struct tape_request *request,
437 struct irb *irb, int rc)
438{
439 DBF_EVENT(3, "Error Recovery failed for %s\n",
440 tape_op_verbose[request->op]);
441 tape_dump_sense_dbf(device, request, irb);
442 return rc;
443}
444
445/*
446 * Error Recovery do retry
447 */
448static inline int
449tape_3590_erp_retry(struct tape_device *device, struct tape_request *request,
450 struct irb *irb)
451{
452 DBF_EVENT(2, "Retry: %s\n", tape_op_verbose[request->op]);
453 tape_dump_sense_dbf(device, request, irb);
454 return TAPE_IO_RETRY;
455}
456
457/*
458 * Handle unsolicited interrupts
459 */
460static int
461tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb)
462{
463 if (irb->scsw.dstat == DEV_STAT_CHN_END)
464 /* Probably result of halt ssch */
465 return TAPE_IO_PENDING;
466 else if (irb->scsw.dstat == 0x85)
467 /* Device Ready -> check medium state */
468 tape_3590_schedule_work(device, TO_MSEN);
469 else if (irb->scsw.dstat & DEV_STAT_ATTENTION)
470 tape_3590_schedule_work(device, TO_READ_ATTMSG);
471 else {
472 DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id);
473 PRINT_WARN("Unsolicited IRQ (Device End) caught.\n");
474 tape_dump_sense(device, NULL, irb);
475 }
476 return TAPE_IO_SUCCESS;
477}
478
479/*
480 * Basic Recovery routine
481 */
482static int
483tape_3590_erp_basic(struct tape_device *device, struct tape_request *request,
484 struct irb *irb, int rc)
485{
486 struct tape_3590_sense *sense;
487
488 sense = (struct tape_3590_sense *) irb->ecw;
489
490 switch (sense->bra) {
491 case SENSE_BRA_PER:
492 return tape_3590_erp_failed(device, request, irb, rc);
493 case SENSE_BRA_CONT:
494 return tape_3590_erp_succeded(device, request);
495 case SENSE_BRA_RE:
496 return tape_3590_erp_retry(device, request, irb);
497 case SENSE_BRA_DRE:
498 return tape_3590_erp_failed(device, request, irb, rc);
499 default:
500 PRINT_ERR("Unknown BRA %x - This should not happen!\n",
501 sense->bra);
502 BUG();
503 return TAPE_IO_STOP;
504 }
505}
506
507/*
508 * RDL: Read Device (buffered) log
509 */
510static int
511tape_3590_erp_read_buf_log(struct tape_device *device,
512 struct tape_request *request, struct irb *irb)
513{
514 /*
515 * We just do the basic error recovery at the moment (retry).
516 * Perhaps in the future, we read the log and dump it somewhere...
517 */
518 return tape_3590_erp_basic(device, request, irb, -EIO);
519}
520
521/*
522 * SWAP: Swap Devices
523 */
524static int
525tape_3590_erp_swap(struct tape_device *device, struct tape_request *request,
526 struct irb *irb)
527{
528 /*
529 * This error recovery should swap the tapes
530 * if the original has a problem. The operation
531 * should proceed with the new tape... this
532 * should probably be done in user space!
533 */
534 PRINT_WARN("(%s): Swap Tape Device!\n", device->cdev->dev.bus_id);
535 return tape_3590_erp_basic(device, request, irb, -EIO);
536}
537
538/*
539 * LBY: Long Busy
540 */
541static int
542tape_3590_erp_long_busy(struct tape_device *device,
543 struct tape_request *request, struct irb *irb)
544{
545 /* FIXME: how about WAITING for a minute ? */
546 PRINT_WARN("(%s): Device is busy! Please wait a minute!\n",
547 device->cdev->dev.bus_id);
548 return tape_3590_erp_basic(device, request, irb, -EBUSY);
549}
550
551/*
552 * SPI: Special Intercept
553 */
554static int
555tape_3590_erp_special_interrupt(struct tape_device *device,
556 struct tape_request *request, struct irb *irb)
557{
558 return tape_3590_erp_basic(device, request, irb, -EIO);
559}
560
561/*
562 * RDA: Read Alternate
563 */
564static int
565tape_3590_erp_read_alternate(struct tape_device *device,
566 struct tape_request *request, struct irb *irb)
567{
568 struct tape_3590_disc_data *data;
569
570 /*
571 * The issued Read Backward or Read Previous command is not
572 * supported by the device
573 * The recovery action should be to issue another command:
574 * Read Revious: if Read Backward is not supported
575 * Read Backward: if Read Previous is not supported
576 */
577 data = device->discdata;
578 if (data->read_back_op == READ_PREVIOUS) {
579 DBF_EVENT(2, "(%08x): No support for READ_PREVIOUS command\n",
580 device->cdev_id);
581 data->read_back_op = READ_BACKWARD;
582 } else {
583 DBF_EVENT(2, "(%08x): No support for READ_BACKWARD command\n",
584 device->cdev_id);
585 data->read_back_op = READ_PREVIOUS;
586 }
587 tape_3590_read_opposite(device, request);
588 return tape_3590_erp_retry(device, request, irb);
589}
590
591/*
592 * Error Recovery read opposite
593 */
594static int
595tape_3590_erp_read_opposite(struct tape_device *device,
596 struct tape_request *request, struct irb *irb)
597{
598 switch (request->op) {
599 case TO_RFO:
600 /*
601 * We did read forward, but the data could not be read.
602 * We will read backward and then skip forward again.
603 */
604 tape_3590_read_opposite(device, request);
605 return tape_3590_erp_retry(device, request, irb);
606 case TO_RBA:
607 /* We tried to read forward and backward, but hat no success */
608 return tape_3590_erp_failed(device, request, irb, -EIO);
609 break;
610 default:
611 PRINT_WARN("read_opposite_recovery_called_with_op: %s\n",
612 tape_op_verbose[request->op]);
613 return tape_3590_erp_failed(device, request, irb, -EIO);
614 }
615}
616
617/*
618 * Print an MIM (Media Information Message) (message code f0)
619 */
620static void
621tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb)
622{
623 struct tape_3590_sense *sense;
624
625 sense = (struct tape_3590_sense *) irb->ecw;
626 /* Exception Message */
627 switch (sense->fmt.f70.emc) {
628 case 0x02:
629 PRINT_WARN("(%s): Data degraded\n", device->cdev->dev.bus_id);
630 break;
631 case 0x03:
632 PRINT_WARN("(%s): Data degraded in partion %i\n",
633 device->cdev->dev.bus_id, sense->fmt.f70.mp);
634 break;
635 case 0x04:
636 PRINT_WARN("(%s): Medium degraded\n", device->cdev->dev.bus_id);
637 break;
638 case 0x05:
639 PRINT_WARN("(%s): Medium degraded in partition %i\n",
640 device->cdev->dev.bus_id, sense->fmt.f70.mp);
641 break;
642 case 0x06:
643 PRINT_WARN("(%s): Block 0 Error\n", device->cdev->dev.bus_id);
644 break;
645 case 0x07:
646 PRINT_WARN("(%s): Medium Exception 0x%02x\n",
647 device->cdev->dev.bus_id, sense->fmt.f70.md);
648 break;
649 default:
650 PRINT_WARN("(%s): MIM ExMsg: 0x%02x\n",
651 device->cdev->dev.bus_id, sense->fmt.f70.emc);
652 break;
653 }
654 /* Service Message */
655 switch (sense->fmt.f70.smc) {
656 case 0x02:
657 PRINT_WARN("(%s): Reference Media maintenance procedure %i\n",
658 device->cdev->dev.bus_id, sense->fmt.f70.md);
659 break;
660 default:
661 PRINT_WARN("(%s): MIM ServiceMsg: 0x%02x\n",
662 device->cdev->dev.bus_id, sense->fmt.f70.smc);
663 break;
664 }
665}
666
667/*
668 * Print an I/O Subsystem Service Information Message (message code f1)
669 */
670static void
671tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb)
672{
673 struct tape_3590_sense *sense;
674
675 sense = (struct tape_3590_sense *) irb->ecw;
676 /* Exception Message */
677 switch (sense->fmt.f71.emc) {
678 case 0x01:
679 PRINT_WARN("(%s): Effect of failure is unknown\n",
680 device->cdev->dev.bus_id);
681 break;
682 case 0x02:
683 PRINT_WARN("(%s): CU Exception - no performance impact\n",
684 device->cdev->dev.bus_id);
685 break;
686 case 0x03:
687 PRINT_WARN("(%s): CU Exception on channel interface 0x%02x\n",
688 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
689 break;
690 case 0x04:
691 PRINT_WARN("(%s): CU Exception on device path 0x%02x\n",
692 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
693 break;
694 case 0x05:
695 PRINT_WARN("(%s): CU Exception on library path 0x%02x\n",
696 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
697 break;
698 case 0x06:
699 PRINT_WARN("(%s): CU Exception on node 0x%02x\n",
700 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
701 break;
702 case 0x07:
703 PRINT_WARN("(%s): CU Exception on partition 0x%02x\n",
704 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
705 break;
706 default:
707 PRINT_WARN("(%s): SIM ExMsg: 0x%02x\n",
708 device->cdev->dev.bus_id, sense->fmt.f71.emc);
709 }
710 /* Service Message */
711 switch (sense->fmt.f71.smc) {
712 case 0x01:
713 PRINT_WARN("(%s): Repair impact is unknown\n",
714 device->cdev->dev.bus_id);
715 break;
716 case 0x02:
717 PRINT_WARN("(%s): Repair will not impact cu performance\n",
718 device->cdev->dev.bus_id);
719 break;
720 case 0x03:
721 if (sense->fmt.f71.mdf == 0)
722 PRINT_WARN("(%s): Repair will disable node "
723 "0x%x on CU\n",
724 device->cdev->dev.bus_id,
725 sense->fmt.f71.md[1]);
726 else
727 PRINT_WARN("(%s): Repair will disable nodes "
728 "(0x%x-0x%x) on CU\n",
729 device->cdev->dev.bus_id,
730 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
731 break;
732 case 0x04:
733 if (sense->fmt.f71.mdf == 0)
734 PRINT_WARN("(%s): Repair will disable cannel path "
735 "0x%x on CU\n",
736 device->cdev->dev.bus_id,
737 sense->fmt.f71.md[1]);
738 else
739 PRINT_WARN("(%s): Repair will disable cannel paths "
740 "(0x%x-0x%x) on CU\n",
741 device->cdev->dev.bus_id,
742 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
743 break;
744 case 0x05:
745 if (sense->fmt.f71.mdf == 0)
746 PRINT_WARN("(%s): Repair will disable device path "
747 "0x%x on CU\n",
748 device->cdev->dev.bus_id,
749 sense->fmt.f71.md[1]);
750 else
751 PRINT_WARN("(%s): Repair will disable device paths "
752 "(0x%x-0x%x) on CU\n",
753 device->cdev->dev.bus_id,
754 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
755 break;
756 case 0x06:
757 if (sense->fmt.f71.mdf == 0)
758 PRINT_WARN("(%s): Repair will disable library path "
759 "0x%x on CU\n",
760 device->cdev->dev.bus_id,
761 sense->fmt.f71.md[1]);
762 else
763 PRINT_WARN("(%s): Repair will disable library paths "
764 "(0x%x-0x%x) on CU\n",
765 device->cdev->dev.bus_id,
766 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
767 break;
768 case 0x07:
769 PRINT_WARN("(%s): Repair will disable access to CU\n",
770 device->cdev->dev.bus_id);
771 break;
772 default:
773 PRINT_WARN("(%s): SIM ServiceMsg: 0x%02x\n",
774 device->cdev->dev.bus_id, sense->fmt.f71.smc);
775 }
776}
777
778/*
779 * Print an Device Subsystem Service Information Message (message code f2)
780 */
781static void
782tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb)
783{
784 struct tape_3590_sense *sense;
785
786 sense = (struct tape_3590_sense *) irb->ecw;
787 /* Exception Message */
788 switch (sense->fmt.f71.emc) {
789 case 0x01:
790 PRINT_WARN("(%s): Effect of failure is unknown\n",
791 device->cdev->dev.bus_id);
792 break;
793 case 0x02:
794 PRINT_WARN("(%s): DV Exception - no performance impact\n",
795 device->cdev->dev.bus_id);
796 break;
797 case 0x03:
798 PRINT_WARN("(%s): DV Exception on channel interface 0x%02x\n",
799 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
800 break;
801 case 0x04:
802 PRINT_WARN("(%s): DV Exception on loader 0x%02x\n",
803 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
804 break;
805 case 0x05:
806 PRINT_WARN("(%s): DV Exception on message display 0x%02x\n",
807 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
808 break;
809 case 0x06:
810 PRINT_WARN("(%s): DV Exception in tape path\n",
811 device->cdev->dev.bus_id);
812 break;
813 case 0x07:
814 PRINT_WARN("(%s): DV Exception in drive\n",
815 device->cdev->dev.bus_id);
816 break;
817 default:
818 PRINT_WARN("(%s): DSIM ExMsg: 0x%02x\n",
819 device->cdev->dev.bus_id, sense->fmt.f71.emc);
820 }
821 /* Service Message */
822 switch (sense->fmt.f71.smc) {
823 case 0x01:
824 PRINT_WARN("(%s): Repair impact is unknown\n",
825 device->cdev->dev.bus_id);
826 break;
827 case 0x02:
828 PRINT_WARN("(%s): Repair will not impact device performance\n",
829 device->cdev->dev.bus_id);
830 break;
831 case 0x03:
832 if (sense->fmt.f71.mdf == 0)
833 PRINT_WARN("(%s): Repair will disable channel path "
834 "0x%x on DV\n",
835 device->cdev->dev.bus_id,
836 sense->fmt.f71.md[1]);
837 else
838 PRINT_WARN("(%s): Repair will disable channel path "
839 "(0x%x-0x%x) on DV\n",
840 device->cdev->dev.bus_id,
841 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
842 break;
843 case 0x04:
844 if (sense->fmt.f71.mdf == 0)
845 PRINT_WARN("(%s): Repair will disable interface 0x%x "
846 "on DV\n",
847 device->cdev->dev.bus_id,
848 sense->fmt.f71.md[1]);
849 else
850 PRINT_WARN("(%s): Repair will disable interfaces "
851 "(0x%x-0x%x) on DV\n",
852 device->cdev->dev.bus_id,
853 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
854 break;
855 case 0x05:
856 if (sense->fmt.f71.mdf == 0)
857 PRINT_WARN("(%s): Repair will disable loader 0x%x "
858 "on DV\n",
859 device->cdev->dev.bus_id,
860 sense->fmt.f71.md[1]);
861 else
862 PRINT_WARN("(%s): Repair will disable loader "
863 "(0x%x-0x%x) on DV\n",
864 device->cdev->dev.bus_id,
865 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
866 break;
867 case 0x07:
868 PRINT_WARN("(%s): Repair will disable access to DV\n",
869 device->cdev->dev.bus_id);
870 break;
871 case 0x08:
872 if (sense->fmt.f71.mdf == 0)
873 PRINT_WARN("(%s): Repair will disable message "
874 "display 0x%x on DV\n",
875 device->cdev->dev.bus_id,
876 sense->fmt.f71.md[1]);
877 else
878 PRINT_WARN("(%s): Repair will disable message "
879 "displays (0x%x-0x%x) on DV\n",
880 device->cdev->dev.bus_id,
881 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
882 break;
883 case 0x09:
884 PRINT_WARN("(%s): Clean DV\n", device->cdev->dev.bus_id);
885 break;
886 default:
887 PRINT_WARN("(%s): DSIM ServiceMsg: 0x%02x\n",
888 device->cdev->dev.bus_id, sense->fmt.f71.smc);
889 }
890}
891
892/*
893 * Print standard ERA Message
894 */
895static void
896tape_3590_print_era_msg(struct tape_device *device, struct irb *irb)
897{
898 struct tape_3590_sense *sense;
899
900 sense = (struct tape_3590_sense *) irb->ecw;
901 if (sense->mc == 0)
902 return;
903 if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) {
904 if (tape_3590_msg[sense->mc] != NULL)
905 PRINT_WARN("(%s): %s\n", device->cdev->dev.bus_id,
906 tape_3590_msg[sense->mc]);
907 else {
908 PRINT_WARN("(%s): Message Code 0x%x\n",
909 device->cdev->dev.bus_id, sense->mc);
910 }
911 return;
912 }
913 if (sense->mc == 0xf0) {
914 /* Standard Media Information Message */
915 PRINT_WARN("(%s): MIM SEV=%i, MC=%02x, ES=%x/%x, "
916 "RC=%02x-%04x-%02x\n", device->cdev->dev.bus_id,
917 sense->fmt.f70.sev, sense->mc,
918 sense->fmt.f70.emc, sense->fmt.f70.smc,
919 sense->fmt.f70.refcode, sense->fmt.f70.mid,
920 sense->fmt.f70.fid);
921 tape_3590_print_mim_msg_f0(device, irb);
922 return;
923 }
924 if (sense->mc == 0xf1) {
925 /* Standard I/O Subsystem Service Information Message */
926 PRINT_WARN("(%s): IOSIM SEV=%i, DEVTYPE=3590/%02x, "
927 "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n",
928 device->cdev->dev.bus_id, sense->fmt.f71.sev,
929 device->cdev->id.dev_model,
930 sense->mc, sense->fmt.f71.emc,
931 sense->fmt.f71.smc, sense->fmt.f71.refcode1,
932 sense->fmt.f71.refcode2, sense->fmt.f71.refcode3);
933 tape_3590_print_io_sim_msg_f1(device, irb);
934 return;
935 }
936 if (sense->mc == 0xf2) {
937 /* Standard Device Service Information Message */
938 PRINT_WARN("(%s): DEVSIM SEV=%i, DEVTYPE=3590/%02x, "
939 "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n",
940 device->cdev->dev.bus_id, sense->fmt.f71.sev,
941 device->cdev->id.dev_model,
942 sense->mc, sense->fmt.f71.emc,
943 sense->fmt.f71.smc, sense->fmt.f71.refcode1,
944 sense->fmt.f71.refcode2, sense->fmt.f71.refcode3);
945 tape_3590_print_dev_sim_msg_f2(device, irb);
946 return;
947 }
948 if (sense->mc == 0xf3) {
949 /* Standard Library Service Information Message */
950 return;
951 }
952 PRINT_WARN("(%s): Device Message(%x)\n",
953 device->cdev->dev.bus_id, sense->mc);
954}
955
956/*
957 * 3590 error Recovery routine:
958 * If possible, it tries to recover from the error. If this is not possible,
959 * inform the user about the problem.
960 */
961static int
962tape_3590_unit_check(struct tape_device *device, struct tape_request *request,
963 struct irb *irb)
964{
965 struct tape_3590_sense *sense;
966 int rc;
967
968#ifdef CONFIG_S390_TAPE_BLOCK
969 if (request->op == TO_BLOCK) {
970 /*
971 * Recovery for block device requests. Set the block_position
972 * to something invalid and retry.
973 */
974 device->blk_data.block_position = -1;
975 if (request->retries-- <= 0)
976 return tape_3590_erp_failed(device, request, irb, -EIO);
977 else
978 return tape_3590_erp_retry(device, request, irb);
979 }
980#endif
981
982 sense = (struct tape_3590_sense *) irb->ecw;
983
984 /*
985 * First check all RC-QRCs where we want to do something special
986 * - "break": basic error recovery is done
987 * - "goto out:": just print error message if available
988 */
989 rc = -EIO;
990 switch (sense->rc_rqc) {
991
992 case 0x1110:
993 tape_3590_print_era_msg(device, irb);
994 return tape_3590_erp_read_buf_log(device, request, irb);
995
996 case 0x2011:
997 tape_3590_print_era_msg(device, irb);
998 return tape_3590_erp_read_alternate(device, request, irb);
999
1000 case 0x2230:
1001 case 0x2231:
1002 tape_3590_print_era_msg(device, irb);
1003 return tape_3590_erp_special_interrupt(device, request, irb);
1004
1005 case 0x3010:
1006 DBF_EVENT(2, "(%08x): Backward at Beginning of Partition\n",
1007 device->cdev_id);
1008 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1009 case 0x3012:
1010 DBF_EVENT(2, "(%08x): Forward at End of Partition\n",
1011 device->cdev_id);
1012 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1013 case 0x3020:
1014 DBF_EVENT(2, "(%08x): End of Data Mark\n", device->cdev_id);
1015 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1016
1017 case 0x3122:
1018 DBF_EVENT(2, "(%08x): Rewind Unload initiated\n",
1019 device->cdev_id);
1020 return tape_3590_erp_basic(device, request, irb, -EIO);
1021 case 0x3123:
1022 DBF_EVENT(2, "(%08x): Rewind Unload complete\n",
1023 device->cdev_id);
1024 tape_med_state_set(device, MS_UNLOADED);
1025 return tape_3590_erp_basic(device, request, irb, 0);
1026
1027 case 0x4010:
1028 /*
1029 * print additional msg since default msg
1030 * "device intervention" is not very meaningfull
1031 */
1032 PRINT_WARN("(%s): Tape operation when medium not loaded\n",
1033 device->cdev->dev.bus_id);
1034 tape_med_state_set(device, MS_UNLOADED);
1035 return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM);
1036 case 0x4012: /* Device Long Busy */
1037 tape_3590_print_era_msg(device, irb);
1038 return tape_3590_erp_long_busy(device, request, irb);
1039
1040 case 0x5010:
1041 if (sense->rac == 0xd0) {
1042 /* Swap */
1043 tape_3590_print_era_msg(device, irb);
1044 return tape_3590_erp_swap(device, request, irb);
1045 }
1046 if (sense->rac == 0x26) {
1047 /* Read Opposite */
1048 tape_3590_print_era_msg(device, irb);
1049 return tape_3590_erp_read_opposite(device, request,
1050 irb);
1051 }
1052 return tape_3590_erp_basic(device, request, irb, -EIO);
1053 case 0x5020:
1054 case 0x5021:
1055 case 0x5022:
1056 case 0x5040:
1057 case 0x5041:
1058 case 0x5042:
1059 tape_3590_print_era_msg(device, irb);
1060 return tape_3590_erp_swap(device, request, irb);
1061
1062 case 0x5110:
1063 case 0x5111:
1064 return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE);
1065
1066 case 0x5120:
1067 case 0x1120:
1068 tape_med_state_set(device, MS_UNLOADED);
1069 return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM);
1070
1071 case 0x6020:
1072 PRINT_WARN("(%s): Cartridge of wrong type ?\n",
1073 device->cdev->dev.bus_id);
1074 return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE);
1075
1076 case 0x8011:
1077 PRINT_WARN("(%s): Another host has reserved the tape device\n",
1078 device->cdev->dev.bus_id);
1079 return tape_3590_erp_basic(device, request, irb, -EPERM);
1080 case 0x8013:
1081 PRINT_WARN("(%s): Another host has priviliged access to the "
1082 "tape device\n", device->cdev->dev.bus_id);
1083 PRINT_WARN("(%s): To solve the problem unload the current "
1084 "cartridge!\n", device->cdev->dev.bus_id);
1085 return tape_3590_erp_basic(device, request, irb, -EPERM);
1086 default:
1087 return tape_3590_erp_basic(device, request, irb, -EIO);
1088 }
1089}
1090
1091/*
1092 * 3590 interrupt handler:
1093 */
1094static int
1095tape_3590_irq(struct tape_device *device, struct tape_request *request,
1096 struct irb *irb)
1097{
1098 if (request == NULL)
1099 return tape_3590_unsolicited_irq(device, irb);
1100
1101 if ((irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) &&
1102 (irb->scsw.dstat & DEV_STAT_DEV_END) && (request->op == TO_WRI)) {
1103 /* Write at end of volume */
1104 DBF_EVENT(2, "End of volume\n");
1105 return tape_3590_erp_failed(device, request, irb, -ENOSPC);
1106 }
1107
1108 if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK)
1109 return tape_3590_unit_check(device, request, irb);
1110
1111 if (irb->scsw.dstat & DEV_STAT_DEV_END) {
1112 if (irb->scsw.dstat == DEV_STAT_UNIT_EXCEP) {
1113 if (request->op == TO_FSB || request->op == TO_BSB)
1114 request->rescnt++;
1115 else
1116 DBF_EVENT(5, "Unit Exception!\n");
1117 }
1118
1119 return tape_3590_done(device, request);
1120 }
1121
1122 if (irb->scsw.dstat & DEV_STAT_CHN_END) {
1123 DBF_EVENT(2, "cannel end\n");
1124 return TAPE_IO_PENDING;
1125 }
1126
1127 if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
1128 DBF_EVENT(2, "Unit Attention when busy..\n");
1129 return TAPE_IO_PENDING;
1130 }
1131
1132 DBF_EVENT(6, "xunknownirq\n");
1133 PRINT_ERR("Unexpected interrupt.\n");
1134 PRINT_ERR("Current op is: %s", tape_op_verbose[request->op]);
1135 tape_dump_sense(device, request, irb);
1136 return TAPE_IO_STOP;
1137}
1138
1139/*
1140 * Setup device function
1141 */
1142static int
1143tape_3590_setup_device(struct tape_device *device)
1144{
1145 int rc;
1146 struct tape_3590_disc_data *data;
1147
1148 DBF_EVENT(6, "3590 device setup\n");
1149 data = kmalloc(sizeof(struct tape_3590_disc_data),
1150 GFP_KERNEL | GFP_DMA);
1151 if (data == NULL)
1152 return -ENOMEM;
1153 data->read_back_op = READ_PREVIOUS;
1154 device->discdata = data;
1155
1156 if ((rc = tape_std_assign(device)) == 0) {
1157 /* Try to find out if medium is loaded */
1158 if ((rc = tape_3590_sense_medium(device)) != 0)
1159 DBF_LH(3, "3590 medium sense returned %d\n", rc);
1160 }
1161
1162 return rc;
1163}
1164
1165/*
1166 * Cleanup device function
1167 */
1168static void
1169tape_3590_cleanup_device(struct tape_device *device)
1170{
1171 tape_std_unassign(device);
1172
1173 kfree(device->discdata);
1174 device->discdata = NULL;
1175}
1176
1177/*
1178 * List of 3590 magnetic tape commands.
1179 */
1180static tape_mtop_fn tape_3590_mtop[TAPE_NR_MTOPS] = {
1181 [MTRESET] = tape_std_mtreset,
1182 [MTFSF] = tape_std_mtfsf,
1183 [MTBSF] = tape_std_mtbsf,
1184 [MTFSR] = tape_std_mtfsr,
1185 [MTBSR] = tape_std_mtbsr,
1186 [MTWEOF] = tape_std_mtweof,
1187 [MTREW] = tape_std_mtrew,
1188 [MTOFFL] = tape_std_mtoffl,
1189 [MTNOP] = tape_std_mtnop,
1190 [MTRETEN] = tape_std_mtreten,
1191 [MTBSFM] = tape_std_mtbsfm,
1192 [MTFSFM] = tape_std_mtfsfm,
1193 [MTEOM] = tape_std_mteom,
1194 [MTERASE] = tape_std_mterase,
1195 [MTRAS1] = NULL,
1196 [MTRAS2] = NULL,
1197 [MTRAS3] = NULL,
1198 [MTSETBLK] = tape_std_mtsetblk,
1199 [MTSETDENSITY] = NULL,
1200 [MTSEEK] = tape_3590_mtseek,
1201 [MTTELL] = tape_3590_mttell,
1202 [MTSETDRVBUFFER] = NULL,
1203 [MTFSS] = NULL,
1204 [MTBSS] = NULL,
1205 [MTWSM] = NULL,
1206 [MTLOCK] = NULL,
1207 [MTUNLOCK] = NULL,
1208 [MTLOAD] = tape_std_mtload,
1209 [MTUNLOAD] = tape_std_mtunload,
1210 [MTCOMPRESSION] = tape_std_mtcompression,
1211 [MTSETPART] = NULL,
1212 [MTMKPART] = NULL
1213};
1214
1215/*
1216 * Tape discipline structure for 3590.
1217 */
1218static struct tape_discipline tape_discipline_3590 = {
1219 .owner = THIS_MODULE,
1220 .setup_device = tape_3590_setup_device,
1221 .cleanup_device = tape_3590_cleanup_device,
1222 .process_eov = tape_std_process_eov,
1223 .irq = tape_3590_irq,
1224 .read_block = tape_std_read_block,
1225 .write_block = tape_std_write_block,
1226#ifdef CONFIG_S390_TAPE_BLOCK
1227 .bread = tape_3590_bread,
1228 .free_bread = tape_3590_free_bread,
1229 .check_locate = tape_3590_check_locate,
1230#endif
1231 .ioctl_fn = tape_3590_ioctl,
1232 .mtop_array = tape_3590_mtop
1233};
1234
1235static struct ccw_device_id tape_3590_ids[] = {
1236 {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590},
1237 { /* end of list */ }
1238};
1239
1240static int
1241tape_3590_online(struct ccw_device *cdev)
1242{
1243 return tape_generic_online(cdev->dev.driver_data,
1244 &tape_discipline_3590);
1245}
1246
1247static int
1248tape_3590_offline(struct ccw_device *cdev)
1249{
1250 return tape_generic_offline(cdev->dev.driver_data);
1251}
1252
1253static struct ccw_driver tape_3590_driver = {
1254 .name = "tape_3590",
1255 .owner = THIS_MODULE,
1256 .ids = tape_3590_ids,
1257 .probe = tape_generic_probe,
1258 .remove = tape_generic_remove,
1259 .set_offline = tape_3590_offline,
1260 .set_online = tape_3590_online,
1261};
1262
1263/*
1264 * Setup discipline structure.
1265 */
1266static int
1267tape_3590_init(void)
1268{
1269 int rc;
1270
1271 TAPE_DBF_AREA = debug_register("tape_3590", 2, 2, 4 * sizeof(long));
1272 debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view);
1273#ifdef DBF_LIKE_HELL
1274 debug_set_level(TAPE_DBF_AREA, 6);
1275#endif
1276
1277 DBF_EVENT(3, "3590 init\n");
1278 /* Register driver for 3590 tapes. */
1279 rc = ccw_driver_register(&tape_3590_driver);
1280 if (rc)
1281 DBF_EVENT(3, "3590 init failed\n");
1282 else
1283 DBF_EVENT(3, "3590 registered\n");
1284 return rc;
1285}
1286
1287static void
1288tape_3590_exit(void)
1289{
1290 ccw_driver_unregister(&tape_3590_driver);
1291
1292 debug_unregister(TAPE_DBF_AREA);
1293}
1294
1295MODULE_DEVICE_TABLE(ccw, tape_3590_ids);
1296MODULE_AUTHOR("(C) 2001,2006 IBM Corporation");
1297MODULE_DESCRIPTION("Linux on zSeries channel attached 3590 tape device driver");
1298MODULE_LICENSE("GPL");
1299
1300module_init(tape_3590_init);
1301module_exit(tape_3590_exit);
diff --git a/drivers/s390/char/tape_3590.h b/drivers/s390/char/tape_3590.h
new file mode 100644
index 000000000000..cf274b9445a6
--- /dev/null
+++ b/drivers/s390/char/tape_3590.h
@@ -0,0 +1,124 @@
1/*
2 * drivers/s390/char/tape_3590.h
3 * tape device discipline for 3590 tapes.
4 *
5 * Copyright (C) IBM Corp. 2001,2006
6 * Author(s): Stefan Bader <shbader@de.ibm.com>
7 * Michael Holzheu <holzheu@de.ibm.com>
8 * Martin Schwidefsky <schwidefsky@de.ibm.com>
9 */
10
11#ifndef _TAPE_3590_H
12#define _TAPE_3590_H
13
14#define MEDIUM_SENSE 0xc2
15#define READ_PREVIOUS 0x0a
16#define MODE_SENSE 0xcf
17#define PERFORM_SS_FUNC 0x77
18#define READ_SS_DATA 0x3e
19
20#define PREP_RD_SS_DATA 0x18
21#define RD_ATTMSG 0x3
22
23#define SENSE_BRA_PER 0
24#define SENSE_BRA_CONT 1
25#define SENSE_BRA_RE 2
26#define SENSE_BRA_DRE 3
27
28#define SENSE_FMT_LIBRARY 0x23
29#define SENSE_FMT_UNSOLICITED 0x40
30#define SENSE_FMT_COMMAND_REJ 0x41
31#define SENSE_FMT_COMMAND_EXEC0 0x50
32#define SENSE_FMT_COMMAND_EXEC1 0x51
33#define SENSE_FMT_EVENT0 0x60
34#define SENSE_FMT_EVENT1 0x61
35#define SENSE_FMT_MIM 0x70
36#define SENSE_FMT_SIM 0x71
37
38#define MSENSE_UNASSOCIATED 0x00
39#define MSENSE_ASSOCIATED_MOUNT 0x01
40#define MSENSE_ASSOCIATED_UMOUNT 0x02
41
42#define TAPE_3590_MAX_MSG 0xb0
43
44/* Datatypes */
45
46struct tape_3590_disc_data {
47 unsigned char modeset_byte;
48 int read_back_op;
49};
50
51struct tape_3590_sense {
52
53 unsigned int command_rej:1;
54 unsigned int interv_req:1;
55 unsigned int bus_out_check:1;
56 unsigned int eq_check:1;
57 unsigned int data_check:1;
58 unsigned int overrun:1;
59 unsigned int def_unit_check:1;
60 unsigned int assgnd_elsew:1;
61
62 unsigned int locate_fail:1;
63 unsigned int inst_online:1;
64 unsigned int reserved:1;
65 unsigned int blk_seq_err:1;
66 unsigned int begin_part:1;
67 unsigned int wr_mode:1;
68 unsigned int wr_prot:1;
69 unsigned int not_cap:1;
70
71 unsigned int bra:2;
72 unsigned int lc:3;
73 unsigned int vlf_active:1;
74 unsigned int stm:1;
75 unsigned int med_pos:1;
76
77 unsigned int rac:8;
78
79 unsigned int rc_rqc:16;
80
81 unsigned int mc:8;
82
83 unsigned int sense_fmt:8;
84
85 union {
86 struct {
87 unsigned int emc:4;
88 unsigned int smc:4;
89 unsigned int sev:2;
90 unsigned int reserved:6;
91 unsigned int md:8;
92 unsigned int refcode:8;
93 unsigned int mid:16;
94 unsigned int mp:16;
95 unsigned char volid[6];
96 unsigned int fid:8;
97 } f70;
98 struct {
99 unsigned int emc:4;
100 unsigned int smc:4;
101 unsigned int sev:2;
102 unsigned int reserved1:5;
103 unsigned int mdf:1;
104 unsigned char md[3];
105 unsigned int simid:8;
106 unsigned int uid:16;
107 unsigned int refcode1:16;
108 unsigned int refcode2:16;
109 unsigned int refcode3:16;
110 unsigned int reserved2:8;
111 } f71;
112 unsigned char data[14];
113 } fmt;
114 unsigned char pad[10];
115
116} __attribute__ ((packed));
117
118struct tape_3590_med_sense {
119 unsigned int macst:4;
120 unsigned int masst:4;
121 char pad[127];
122} __attribute__ ((packed));
123
124#endif /* _TAPE_3590_H */
diff --git a/drivers/s390/char/tape_std.h b/drivers/s390/char/tape_std.h
index 3ab6aafb7343..2d311798edf4 100644
--- a/drivers/s390/char/tape_std.h
+++ b/drivers/s390/char/tape_std.h
@@ -1,9 +1,8 @@
1/* 1/*
2 * drivers/s390/char/tape_34xx.h 2 * drivers/s390/char/tape_std.h
3 * standard tape device functions for ibm tapes. 3 * standard tape device functions for ibm tapes.
4 * 4 *
5 * S390 and zSeries version 5 * Copyright (C) IBM Corp. 2001,2006
6 * Copyright (C) 2001,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Author(s): Carsten Otte <cotte@de.ibm.com> 6 * Author(s): Carsten Otte <cotte@de.ibm.com>
8 * Tuan Ngo-Anh <ngoanh@de.ibm.com> 7 * Tuan Ngo-Anh <ngoanh@de.ibm.com>
9 * Martin Schwidefsky <schwidefsky@de.ibm.com> 8 * Martin Schwidefsky <schwidefsky@de.ibm.com>
@@ -149,4 +148,11 @@ void tape_std_error_recovery_do_retry(struct tape_device *);
149void tape_std_error_recovery_read_opposite(struct tape_device *); 148void tape_std_error_recovery_read_opposite(struct tape_device *);
150void tape_std_error_recovery_HWBUG(struct tape_device *, int condno); 149void tape_std_error_recovery_HWBUG(struct tape_device *, int condno);
151 150
151/* S390 tape types */
152enum s390_tape_type {
153 tape_3480,
154 tape_3490,
155 tape_3590,
156};
157
152#endif // _TAPE_STD_H 158#endif // _TAPE_STD_H
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