2 * drivers/s390/char/tape_3590.c
3 * tape device discipline for 3590 tapes.
5 * Copyright 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>
11 #include <linux/module.h>
12 #include <linux/init.h>
13 #include <linux/bio.h>
14 #include <asm/ebcdic.h>
16 #define TAPE_DBF_AREA tape_3590_dbf
20 #include "tape_3590.h"
23 * Pointer to debug area.
25 debug_info_t *TAPE_DBF_AREA = NULL;
26 EXPORT_SYMBOL(TAPE_DBF_AREA);
28 /*******************************************************************
29 * Error Recovery fuctions:
30 * - Read Opposite: implemented
31 * - Read Device (buffered) log: BRA
32 * - Read Library log: BRA
34 * - Long Busy: implemented
35 * - Special Intercept: BRA
36 * - Read Alternate: implemented
37 *******************************************************************/
39 #define PRINTK_HEADER "TAPE_3590: "
41 static const char *tape_3590_msg[TAPE_3590_MAX_MSG] = {
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",
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",
98 static int crypt_supported(struct tape_device *device)
100 return TAPE390_CRYPT_SUPPORTED(TAPE_3590_CRYPT_INFO(device));
103 static int crypt_enabled(struct tape_device *device)
105 return TAPE390_CRYPT_ON(TAPE_3590_CRYPT_INFO(device));
108 static void ext_to_int_kekl(struct tape390_kekl *in,
109 struct tape3592_kekl *out)
113 memset(out, 0, sizeof(*out));
114 if (in->type == TAPE390_KEKL_TYPE_HASH)
116 if (in->type_on_tape == TAPE390_KEKL_TYPE_HASH)
118 strncpy(out->label, in->label, 64);
119 for (i = strlen(in->label); i < sizeof(out->label); i++)
121 ASCEBC(out->label, sizeof(out->label));
124 static void int_to_ext_kekl(struct tape3592_kekl *in,
125 struct tape390_kekl *out)
127 memset(out, 0, sizeof(*out));
129 out->type = TAPE390_KEKL_TYPE_HASH;
131 out->type = TAPE390_KEKL_TYPE_LABEL;
133 out->type_on_tape = TAPE390_KEKL_TYPE_HASH;
135 out->type_on_tape = TAPE390_KEKL_TYPE_LABEL;
136 memcpy(out->label, in->label, sizeof(in->label));
137 EBCASC(out->label, sizeof(in->label));
138 strstrip(out->label);
141 static void int_to_ext_kekl_pair(struct tape3592_kekl_pair *in,
142 struct tape390_kekl_pair *out)
144 if (in->count == 0) {
145 out->kekl[0].type = TAPE390_KEKL_TYPE_NONE;
146 out->kekl[0].type_on_tape = TAPE390_KEKL_TYPE_NONE;
147 out->kekl[1].type = TAPE390_KEKL_TYPE_NONE;
148 out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE;
149 } else if (in->count == 1) {
150 int_to_ext_kekl(&in->kekl[0], &out->kekl[0]);
151 out->kekl[1].type = TAPE390_KEKL_TYPE_NONE;
152 out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE;
153 } else if (in->count == 2) {
154 int_to_ext_kekl(&in->kekl[0], &out->kekl[0]);
155 int_to_ext_kekl(&in->kekl[1], &out->kekl[1]);
157 printk("Invalid KEKL number: %d\n", in->count);
162 static int check_ext_kekl(struct tape390_kekl *kekl)
164 if (kekl->type == TAPE390_KEKL_TYPE_NONE)
166 if (kekl->type > TAPE390_KEKL_TYPE_HASH)
168 if (kekl->type_on_tape == TAPE390_KEKL_TYPE_NONE)
170 if (kekl->type_on_tape > TAPE390_KEKL_TYPE_HASH)
172 if ((kekl->type == TAPE390_KEKL_TYPE_HASH) &&
173 (kekl->type_on_tape == TAPE390_KEKL_TYPE_LABEL))
181 static int check_ext_kekl_pair(struct tape390_kekl_pair *kekls)
183 if (check_ext_kekl(&kekls->kekl[0]))
185 if (check_ext_kekl(&kekls->kekl[1]))
196 static int tape_3592_kekl_query(struct tape_device *device,
197 struct tape390_kekl_pair *ext_kekls)
199 struct tape_request *request;
200 struct tape3592_kekl_query_order *order;
201 struct tape3592_kekl_query_data *int_kekls;
204 DBF_EVENT(6, "tape3592_kekl_query\n");
205 int_kekls = kmalloc(sizeof(*int_kekls), GFP_KERNEL|GFP_DMA);
208 request = tape_alloc_request(2, sizeof(*order));
209 if (IS_ERR(request)) {
210 rc = PTR_ERR(request);
213 order = request->cpdata;
214 memset(order,0,sizeof(*order));
216 order->max_count = 2;
217 request->op = TO_KEKL_QUERY;
218 tape_ccw_cc(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order);
219 tape_ccw_end(request->cpaddr + 1, READ_SS_DATA, sizeof(*int_kekls),
221 rc = tape_do_io(device, request);
224 int_to_ext_kekl_pair(&int_kekls->kekls, ext_kekls);
228 tape_free_request(request);
237 static int tape_3592_ioctl_kekl_query(struct tape_device *device,
241 struct tape390_kekl_pair *ext_kekls;
243 DBF_EVENT(6, "tape_3592_ioctl_kekl_query\n");
244 if (!crypt_supported(device))
246 if (!crypt_enabled(device))
248 ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL);
251 rc = tape_3592_kekl_query(device, ext_kekls);
254 if (copy_to_user((char __user *) arg, ext_kekls, sizeof(*ext_kekls))) {
264 static int tape_3590_mttell(struct tape_device *device, int mt_count);
269 static int tape_3592_kekl_set(struct tape_device *device,
270 struct tape390_kekl_pair *ext_kekls)
272 struct tape_request *request;
273 struct tape3592_kekl_set_order *order;
275 DBF_EVENT(6, "tape3592_kekl_set\n");
276 if (check_ext_kekl_pair(ext_kekls)) {
277 DBF_EVENT(6, "invalid kekls\n");
280 if (tape_3590_mttell(device, 0) != 0)
282 request = tape_alloc_request(1, sizeof(*order));
284 return PTR_ERR(request);
285 order = request->cpdata;
286 memset(order, 0, sizeof(*order));
288 order->kekls.count = 2;
289 ext_to_int_kekl(&ext_kekls->kekl[0], &order->kekls.kekl[0]);
290 ext_to_int_kekl(&ext_kekls->kekl[1], &order->kekls.kekl[1]);
291 request->op = TO_KEKL_SET;
292 tape_ccw_end(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order);
294 return tape_do_io_free(device, request);
300 static int tape_3592_ioctl_kekl_set(struct tape_device *device,
304 struct tape390_kekl_pair *ext_kekls;
306 DBF_EVENT(6, "tape_3592_ioctl_kekl_set\n");
307 if (!crypt_supported(device))
309 if (!crypt_enabled(device))
311 ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL);
314 if (copy_from_user(ext_kekls, (char __user *)arg, sizeof(*ext_kekls))) {
318 rc = tape_3592_kekl_set(device, ext_kekls);
327 static int tape_3592_enable_crypt(struct tape_device *device)
329 struct tape_request *request;
332 DBF_EVENT(6, "tape_3592_enable_crypt\n");
333 if (!crypt_supported(device))
335 request = tape_alloc_request(2, 72);
337 return PTR_ERR(request);
338 data = request->cpdata;
346 data[36 + 14] = 0x2f;
347 data[36 + 18] = 0xc3;
348 data[36 + 35] = 0x72;
349 request->op = TO_CRYPT_ON;
350 tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data);
351 tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36);
352 return tape_do_io_free(device, request);
358 static int tape_3592_disable_crypt(struct tape_device *device)
360 struct tape_request *request;
363 DBF_EVENT(6, "tape_3592_disable_crypt\n");
364 if (!crypt_supported(device))
366 request = tape_alloc_request(2, 72);
368 return PTR_ERR(request);
369 data = request->cpdata;
375 data[36 + 35] = 0x32;
377 request->op = TO_CRYPT_OFF;
378 tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data);
379 tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36);
381 return tape_do_io_free(device, request);
385 * IOCTL: Set encryption status
387 static int tape_3592_ioctl_crypt_set(struct tape_device *device,
390 struct tape390_crypt_info info;
392 DBF_EVENT(6, "tape_3592_ioctl_crypt_set\n");
393 if (!crypt_supported(device))
395 if (copy_from_user(&info, (char __user *)arg, sizeof(info)))
397 if (info.status & ~TAPE390_CRYPT_ON_MASK)
399 if (info.status & TAPE390_CRYPT_ON_MASK)
400 return tape_3592_enable_crypt(device);
402 return tape_3592_disable_crypt(device);
405 static int tape_3590_sense_medium(struct tape_device *device);
408 * IOCTL: Query enryption status
410 static int tape_3592_ioctl_crypt_query(struct tape_device *device,
413 DBF_EVENT(6, "tape_3592_ioctl_crypt_query\n");
414 if (!crypt_supported(device))
416 tape_3590_sense_medium(device);
417 if (copy_to_user((char __user *) arg, &TAPE_3590_CRYPT_INFO(device),
418 sizeof(TAPE_3590_CRYPT_INFO(device))))
425 * 3590 IOCTL Overload
428 tape_3590_ioctl(struct tape_device *device, unsigned int cmd, unsigned long arg)
431 case TAPE390_DISPLAY: {
432 struct display_struct disp;
434 if (copy_from_user(&disp, (char __user *) arg, sizeof(disp)))
437 return tape_std_display(device, &disp);
439 case TAPE390_KEKL_SET:
440 return tape_3592_ioctl_kekl_set(device, arg);
441 case TAPE390_KEKL_QUERY:
442 return tape_3592_ioctl_kekl_query(device, arg);
443 case TAPE390_CRYPT_SET:
444 return tape_3592_ioctl_crypt_set(device, arg);
445 case TAPE390_CRYPT_QUERY:
446 return tape_3592_ioctl_crypt_query(device, arg);
448 return -EINVAL; /* no additional ioctls */
453 * SENSE Medium: Get Sense data about medium state
456 tape_3590_sense_medium(struct tape_device *device)
458 struct tape_request *request;
460 request = tape_alloc_request(1, 128);
462 return PTR_ERR(request);
463 request->op = TO_MSEN;
464 tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata);
465 return tape_do_io_free(device, request);
469 * MTTELL: Tell block. Return the number of block relative to current file.
472 tape_3590_mttell(struct tape_device *device, int mt_count)
477 rc = tape_std_read_block_id(device, &block_id);
480 return block_id >> 32;
484 * MTSEEK: seek to the specified block.
487 tape_3590_mtseek(struct tape_device *device, int count)
489 struct tape_request *request;
491 DBF_EVENT(6, "xsee id: %x\n", count);
492 request = tape_alloc_request(3, 4);
494 return PTR_ERR(request);
495 request->op = TO_LBL;
496 tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
497 *(__u32 *) request->cpdata = count;
498 tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata);
499 tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL);
500 return tape_do_io_free(device, request);
504 * Read Opposite Error Recovery Function:
505 * Used, when Read Forward does not work
508 tape_3590_read_opposite(struct tape_device *device,
509 struct tape_request *request)
511 struct tape_3590_disc_data *data;
514 * We have allocated 4 ccws in tape_std_read, so we can now
515 * transform the request to a read backward, followed by a
516 * forward space block.
518 request->op = TO_RBA;
519 tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
520 data = device->discdata;
521 tape_ccw_cc_idal(request->cpaddr + 1, data->read_back_op,
522 device->char_data.idal_buf);
523 tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL);
524 tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL);
525 DBF_EVENT(6, "xrop ccwg\n");
530 * This should be done after an interrupt with attention bit (0x80)
533 * After a "read attention message" request there are two possible
536 * 1. A unit check is presented, when attention sense is present (e.g. when
537 * a medium has been unloaded). The attention sense comes then
538 * together with the unit check. The recovery action is either "retry"
539 * (in case there is an attention message pending) or "permanent error".
541 * 2. The attention msg is written to the "read subsystem data" buffer.
542 * In this case we probably should print it to the console.
545 tape_3590_read_attmsg(struct tape_device *device)
547 struct tape_request *request;
550 request = tape_alloc_request(3, 4096);
552 return PTR_ERR(request);
553 request->op = TO_READ_ATTMSG;
554 buf = request->cpdata;
555 buf[0] = PREP_RD_SS_DATA;
556 buf[6] = RD_ATTMSG; /* read att msg */
557 tape_ccw_cc(request->cpaddr, PERFORM_SS_FUNC, 12, buf);
558 tape_ccw_cc(request->cpaddr + 1, READ_SS_DATA, 4096 - 12, buf + 12);
559 tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL);
560 return tape_do_io_free(device, request);
564 * These functions are used to schedule follow-up actions from within an
565 * interrupt context (like unsolicited interrupts).
567 struct work_handler_data {
568 struct tape_device *device;
570 struct work_struct work;
574 tape_3590_work_handler(struct work_struct *work)
576 struct work_handler_data *p =
577 container_of(work, struct work_handler_data, work);
581 tape_3590_sense_medium(p->device);
584 tape_3590_read_attmsg(p->device);
587 tape_3592_enable_crypt(p->device);
590 tape_3592_disable_crypt(p->device);
593 DBF_EVENT(3, "T3590: work handler undefined for "
594 "operation 0x%02x\n", p->op);
596 tape_put_device(p->device);
601 tape_3590_schedule_work(struct tape_device *device, enum tape_op op)
603 struct work_handler_data *p;
605 if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL)
608 INIT_WORK(&p->work, tape_3590_work_handler);
610 p->device = tape_get_device_reference(device);
613 schedule_work(&p->work);
617 #ifdef CONFIG_S390_TAPE_BLOCK
621 static struct tape_request *
622 tape_3590_bread(struct tape_device *device, struct request *req)
624 struct tape_request *request;
626 int count = 0, start_block;
630 struct req_iterator iter;
632 DBF_EVENT(6, "xBREDid:");
633 start_block = req->sector >> TAPEBLOCK_HSEC_S2B;
634 DBF_EVENT(6, "start_block = %i\n", start_block);
636 rq_for_each_segment(bv, req, iter)
637 count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9);
639 request = tape_alloc_request(2 + count + 1, 4);
642 request->op = TO_BLOCK;
643 *(__u32 *) request->cpdata = start_block;
644 ccw = request->cpaddr;
645 ccw = tape_ccw_cc(ccw, MODE_SET_DB, 1, device->modeset_byte);
648 * We always setup a nop after the mode set ccw. This slot is
649 * used in tape_std_check_locate to insert a locate ccw if the
650 * current tape position doesn't match the start block to be read.
652 ccw = tape_ccw_cc(ccw, NOP, 0, NULL);
654 rq_for_each_segment(bv, req, iter) {
655 dst = page_address(bv->bv_page) + bv->bv_offset;
656 for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) {
657 ccw->flags = CCW_FLAG_CC;
658 ccw->cmd_code = READ_FORWARD;
659 ccw->count = TAPEBLOCK_HSEC_SIZE;
660 set_normalized_cda(ccw, (void *) __pa(dst));
662 dst += TAPEBLOCK_HSEC_SIZE;
664 if (off > bv->bv_len)
667 ccw = tape_ccw_end(ccw, NOP, 0, NULL);
668 DBF_EVENT(6, "xBREDccwg\n");
673 tape_3590_free_bread(struct tape_request *request)
677 /* Last ccw is a nop and doesn't need clear_normalized_cda */
678 for (ccw = request->cpaddr; ccw->flags & CCW_FLAG_CC; ccw++)
679 if (ccw->cmd_code == READ_FORWARD)
680 clear_normalized_cda(ccw);
681 tape_free_request(request);
685 * check_locate is called just before the tape request is passed to
686 * the common io layer for execution. It has to check the current
687 * tape position and insert a locate ccw if it doesn't match the
688 * start block for the request.
691 tape_3590_check_locate(struct tape_device *device, struct tape_request *request)
695 start_block = (__u32 *) request->cpdata;
696 if (*start_block != device->blk_data.block_position) {
697 /* Add the start offset of the file to get the real block. */
698 *start_block += device->bof;
699 tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata);
704 static void tape_3590_med_state_set(struct tape_device *device,
705 struct tape_3590_med_sense *sense)
707 struct tape390_crypt_info *c_info;
709 c_info = &TAPE_3590_CRYPT_INFO(device);
711 if (sense->masst == MSENSE_UNASSOCIATED) {
712 tape_med_state_set(device, MS_UNLOADED);
713 TAPE_3590_CRYPT_INFO(device).medium_status = 0;
716 if (sense->masst != MSENSE_ASSOCIATED_MOUNT) {
717 PRINT_ERR("Unknown medium state: %x\n", sense->masst);
720 tape_med_state_set(device, MS_LOADED);
721 c_info->medium_status |= TAPE390_MEDIUM_LOADED_MASK;
722 if (sense->flags & MSENSE_CRYPT_MASK) {
723 PRINT_INFO("Medium is encrypted (%04x)\n", sense->flags);
724 c_info->medium_status |= TAPE390_MEDIUM_ENCRYPTED_MASK;
726 DBF_EVENT(6, "Medium is not encrypted %04x\n", sense->flags);
727 c_info->medium_status &= ~TAPE390_MEDIUM_ENCRYPTED_MASK;
732 * The done handler is called at device/channel end and wakes up the sleeping
736 tape_3590_done(struct tape_device *device, struct tape_request *request)
738 struct tape_3590_disc_data *disc_data;
740 DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]);
741 disc_data = device->discdata;
743 switch (request->op) {
757 tape_med_state_set(device, MS_LOADED);
760 tape_med_state_set(device, MS_UNLOADED);
761 tape_3590_schedule_work(device, TO_CRYPT_OFF);
764 tape_3590_med_state_set(device, request->cpdata);
767 TAPE_3590_CRYPT_INFO(device).status
768 |= TAPE390_CRYPT_ON_MASK;
769 *(device->modeset_byte) |= 0x03;
772 TAPE_3590_CRYPT_INFO(device).status
773 &= ~TAPE390_CRYPT_ON_MASK;
774 *(device->modeset_byte) &= ~0x03;
776 case TO_RBI: /* RBI seems to succeed even without medium loaded. */
777 case TO_NOP: /* Same to NOP. */
789 return TAPE_IO_SUCCESS;
793 * This fuction is called, when error recovery was successfull
796 tape_3590_erp_succeded(struct tape_device *device, struct tape_request *request)
798 DBF_EVENT(3, "Error Recovery successfull for %s\n",
799 tape_op_verbose[request->op]);
800 return tape_3590_done(device, request);
804 * This fuction is called, when error recovery was not successfull
807 tape_3590_erp_failed(struct tape_device *device, struct tape_request *request,
808 struct irb *irb, int rc)
810 DBF_EVENT(3, "Error Recovery failed for %s\n",
811 tape_op_verbose[request->op]);
812 tape_dump_sense_dbf(device, request, irb);
817 * Error Recovery do retry
820 tape_3590_erp_retry(struct tape_device *device, struct tape_request *request,
823 DBF_EVENT(2, "Retry: %s\n", tape_op_verbose[request->op]);
824 tape_dump_sense_dbf(device, request, irb);
825 return TAPE_IO_RETRY;
829 * Handle unsolicited interrupts
832 tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb)
834 if (irb->scsw.dstat == DEV_STAT_CHN_END)
835 /* Probably result of halt ssch */
836 return TAPE_IO_PENDING;
837 else if (irb->scsw.dstat == 0x85)
838 /* Device Ready -> check medium state */
839 tape_3590_schedule_work(device, TO_MSEN);
840 else if (irb->scsw.dstat & DEV_STAT_ATTENTION)
841 tape_3590_schedule_work(device, TO_READ_ATTMSG);
843 DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id);
844 PRINT_WARN("Unsolicited IRQ (Device End) caught.\n");
845 tape_dump_sense(device, NULL, irb);
847 return TAPE_IO_SUCCESS;
851 * Basic Recovery routine
854 tape_3590_erp_basic(struct tape_device *device, struct tape_request *request,
855 struct irb *irb, int rc)
857 struct tape_3590_sense *sense;
859 sense = (struct tape_3590_sense *) irb->ecw;
861 switch (sense->bra) {
863 return tape_3590_erp_failed(device, request, irb, rc);
865 return tape_3590_erp_succeded(device, request);
867 return tape_3590_erp_retry(device, request, irb);
869 return tape_3590_erp_failed(device, request, irb, rc);
871 PRINT_ERR("Unknown BRA %x - This should not happen!\n",
879 * RDL: Read Device (buffered) log
882 tape_3590_erp_read_buf_log(struct tape_device *device,
883 struct tape_request *request, struct irb *irb)
886 * We just do the basic error recovery at the moment (retry).
887 * Perhaps in the future, we read the log and dump it somewhere...
889 return tape_3590_erp_basic(device, request, irb, -EIO);
896 tape_3590_erp_swap(struct tape_device *device, struct tape_request *request,
900 * This error recovery should swap the tapes
901 * if the original has a problem. The operation
902 * should proceed with the new tape... this
903 * should probably be done in user space!
905 PRINT_WARN("(%s): Swap Tape Device!\n", device->cdev->dev.bus_id);
906 return tape_3590_erp_basic(device, request, irb, -EIO);
913 tape_3590_erp_long_busy(struct tape_device *device,
914 struct tape_request *request, struct irb *irb)
916 DBF_EVENT(6, "Device is busy\n");
917 return TAPE_IO_LONG_BUSY;
921 * SPI: Special Intercept
924 tape_3590_erp_special_interrupt(struct tape_device *device,
925 struct tape_request *request, struct irb *irb)
927 return tape_3590_erp_basic(device, request, irb, -EIO);
931 * RDA: Read Alternate
934 tape_3590_erp_read_alternate(struct tape_device *device,
935 struct tape_request *request, struct irb *irb)
937 struct tape_3590_disc_data *data;
940 * The issued Read Backward or Read Previous command is not
941 * supported by the device
942 * The recovery action should be to issue another command:
943 * Read Revious: if Read Backward is not supported
944 * Read Backward: if Read Previous is not supported
946 data = device->discdata;
947 if (data->read_back_op == READ_PREVIOUS) {
948 DBF_EVENT(2, "(%08x): No support for READ_PREVIOUS command\n",
950 data->read_back_op = READ_BACKWARD;
952 DBF_EVENT(2, "(%08x): No support for READ_BACKWARD command\n",
954 data->read_back_op = READ_PREVIOUS;
956 tape_3590_read_opposite(device, request);
957 return tape_3590_erp_retry(device, request, irb);
961 * Error Recovery read opposite
964 tape_3590_erp_read_opposite(struct tape_device *device,
965 struct tape_request *request, struct irb *irb)
967 switch (request->op) {
970 * We did read forward, but the data could not be read.
971 * We will read backward and then skip forward again.
973 tape_3590_read_opposite(device, request);
974 return tape_3590_erp_retry(device, request, irb);
976 /* We tried to read forward and backward, but hat no success */
977 return tape_3590_erp_failed(device, request, irb, -EIO);
980 PRINT_WARN("read_opposite_recovery_called_with_op: %s\n",
981 tape_op_verbose[request->op]);
982 return tape_3590_erp_failed(device, request, irb, -EIO);
987 * Print an MIM (Media Information Message) (message code f0)
990 tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb)
992 struct tape_3590_sense *sense;
994 sense = (struct tape_3590_sense *) irb->ecw;
995 /* Exception Message */
996 switch (sense->fmt.f70.emc) {
998 PRINT_WARN("(%s): Data degraded\n", device->cdev->dev.bus_id);
1001 PRINT_WARN("(%s): Data degraded in partion %i\n",
1002 device->cdev->dev.bus_id, sense->fmt.f70.mp);
1005 PRINT_WARN("(%s): Medium degraded\n", device->cdev->dev.bus_id);
1008 PRINT_WARN("(%s): Medium degraded in partition %i\n",
1009 device->cdev->dev.bus_id, sense->fmt.f70.mp);
1012 PRINT_WARN("(%s): Block 0 Error\n", device->cdev->dev.bus_id);
1015 PRINT_WARN("(%s): Medium Exception 0x%02x\n",
1016 device->cdev->dev.bus_id, sense->fmt.f70.md);
1019 PRINT_WARN("(%s): MIM ExMsg: 0x%02x\n",
1020 device->cdev->dev.bus_id, sense->fmt.f70.emc);
1023 /* Service Message */
1024 switch (sense->fmt.f70.smc) {
1026 PRINT_WARN("(%s): Reference Media maintenance procedure %i\n",
1027 device->cdev->dev.bus_id, sense->fmt.f70.md);
1030 PRINT_WARN("(%s): MIM ServiceMsg: 0x%02x\n",
1031 device->cdev->dev.bus_id, sense->fmt.f70.smc);
1037 * Print an I/O Subsystem Service Information Message (message code f1)
1040 tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb)
1042 struct tape_3590_sense *sense;
1044 sense = (struct tape_3590_sense *) irb->ecw;
1045 /* Exception Message */
1046 switch (sense->fmt.f71.emc) {
1048 PRINT_WARN("(%s): Effect of failure is unknown\n",
1049 device->cdev->dev.bus_id);
1052 PRINT_WARN("(%s): CU Exception - no performance impact\n",
1053 device->cdev->dev.bus_id);
1056 PRINT_WARN("(%s): CU Exception on channel interface 0x%02x\n",
1057 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1060 PRINT_WARN("(%s): CU Exception on device path 0x%02x\n",
1061 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1064 PRINT_WARN("(%s): CU Exception on library path 0x%02x\n",
1065 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1068 PRINT_WARN("(%s): CU Exception on node 0x%02x\n",
1069 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1072 PRINT_WARN("(%s): CU Exception on partition 0x%02x\n",
1073 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1076 PRINT_WARN("(%s): SIM ExMsg: 0x%02x\n",
1077 device->cdev->dev.bus_id, sense->fmt.f71.emc);
1079 /* Service Message */
1080 switch (sense->fmt.f71.smc) {
1082 PRINT_WARN("(%s): Repair impact is unknown\n",
1083 device->cdev->dev.bus_id);
1086 PRINT_WARN("(%s): Repair will not impact cu performance\n",
1087 device->cdev->dev.bus_id);
1090 if (sense->fmt.f71.mdf == 0)
1091 PRINT_WARN("(%s): Repair will disable node "
1093 device->cdev->dev.bus_id,
1094 sense->fmt.f71.md[1]);
1096 PRINT_WARN("(%s): Repair will disable nodes "
1097 "(0x%x-0x%x) on CU\n",
1098 device->cdev->dev.bus_id,
1099 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1102 if (sense->fmt.f71.mdf == 0)
1103 PRINT_WARN("(%s): Repair will disable cannel path "
1105 device->cdev->dev.bus_id,
1106 sense->fmt.f71.md[1]);
1108 PRINT_WARN("(%s): Repair will disable cannel paths "
1109 "(0x%x-0x%x) on CU\n",
1110 device->cdev->dev.bus_id,
1111 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1114 if (sense->fmt.f71.mdf == 0)
1115 PRINT_WARN("(%s): Repair will disable device path "
1117 device->cdev->dev.bus_id,
1118 sense->fmt.f71.md[1]);
1120 PRINT_WARN("(%s): Repair will disable device paths "
1121 "(0x%x-0x%x) on CU\n",
1122 device->cdev->dev.bus_id,
1123 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1126 if (sense->fmt.f71.mdf == 0)
1127 PRINT_WARN("(%s): Repair will disable library path "
1129 device->cdev->dev.bus_id,
1130 sense->fmt.f71.md[1]);
1132 PRINT_WARN("(%s): Repair will disable library paths "
1133 "(0x%x-0x%x) on CU\n",
1134 device->cdev->dev.bus_id,
1135 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1138 PRINT_WARN("(%s): Repair will disable access to CU\n",
1139 device->cdev->dev.bus_id);
1142 PRINT_WARN("(%s): SIM ServiceMsg: 0x%02x\n",
1143 device->cdev->dev.bus_id, sense->fmt.f71.smc);
1148 * Print an Device Subsystem Service Information Message (message code f2)
1151 tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb)
1153 struct tape_3590_sense *sense;
1155 sense = (struct tape_3590_sense *) irb->ecw;
1156 /* Exception Message */
1157 switch (sense->fmt.f71.emc) {
1159 PRINT_WARN("(%s): Effect of failure is unknown\n",
1160 device->cdev->dev.bus_id);
1163 PRINT_WARN("(%s): DV Exception - no performance impact\n",
1164 device->cdev->dev.bus_id);
1167 PRINT_WARN("(%s): DV Exception on channel interface 0x%02x\n",
1168 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1171 PRINT_WARN("(%s): DV Exception on loader 0x%02x\n",
1172 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1175 PRINT_WARN("(%s): DV Exception on message display 0x%02x\n",
1176 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1179 PRINT_WARN("(%s): DV Exception in tape path\n",
1180 device->cdev->dev.bus_id);
1183 PRINT_WARN("(%s): DV Exception in drive\n",
1184 device->cdev->dev.bus_id);
1187 PRINT_WARN("(%s): DSIM ExMsg: 0x%02x\n",
1188 device->cdev->dev.bus_id, sense->fmt.f71.emc);
1190 /* Service Message */
1191 switch (sense->fmt.f71.smc) {
1193 PRINT_WARN("(%s): Repair impact is unknown\n",
1194 device->cdev->dev.bus_id);
1197 PRINT_WARN("(%s): Repair will not impact device performance\n",
1198 device->cdev->dev.bus_id);
1201 if (sense->fmt.f71.mdf == 0)
1202 PRINT_WARN("(%s): Repair will disable channel path "
1204 device->cdev->dev.bus_id,
1205 sense->fmt.f71.md[1]);
1207 PRINT_WARN("(%s): Repair will disable channel path "
1208 "(0x%x-0x%x) on DV\n",
1209 device->cdev->dev.bus_id,
1210 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1213 if (sense->fmt.f71.mdf == 0)
1214 PRINT_WARN("(%s): Repair will disable interface 0x%x "
1216 device->cdev->dev.bus_id,
1217 sense->fmt.f71.md[1]);
1219 PRINT_WARN("(%s): Repair will disable interfaces "
1220 "(0x%x-0x%x) on DV\n",
1221 device->cdev->dev.bus_id,
1222 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1225 if (sense->fmt.f71.mdf == 0)
1226 PRINT_WARN("(%s): Repair will disable loader 0x%x "
1228 device->cdev->dev.bus_id,
1229 sense->fmt.f71.md[1]);
1231 PRINT_WARN("(%s): Repair will disable loader "
1232 "(0x%x-0x%x) on DV\n",
1233 device->cdev->dev.bus_id,
1234 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1237 PRINT_WARN("(%s): Repair will disable access to DV\n",
1238 device->cdev->dev.bus_id);
1241 if (sense->fmt.f71.mdf == 0)
1242 PRINT_WARN("(%s): Repair will disable message "
1243 "display 0x%x on DV\n",
1244 device->cdev->dev.bus_id,
1245 sense->fmt.f71.md[1]);
1247 PRINT_WARN("(%s): Repair will disable message "
1248 "displays (0x%x-0x%x) on DV\n",
1249 device->cdev->dev.bus_id,
1250 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1253 PRINT_WARN("(%s): Clean DV\n", device->cdev->dev.bus_id);
1256 PRINT_WARN("(%s): DSIM ServiceMsg: 0x%02x\n",
1257 device->cdev->dev.bus_id, sense->fmt.f71.smc);
1262 * Print standard ERA Message
1265 tape_3590_print_era_msg(struct tape_device *device, struct irb *irb)
1267 struct tape_3590_sense *sense;
1269 sense = (struct tape_3590_sense *) irb->ecw;
1272 if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) {
1273 if (tape_3590_msg[sense->mc] != NULL)
1274 PRINT_WARN("(%s): %s\n", device->cdev->dev.bus_id,
1275 tape_3590_msg[sense->mc]);
1277 PRINT_WARN("(%s): Message Code 0x%x\n",
1278 device->cdev->dev.bus_id, sense->mc);
1282 if (sense->mc == 0xf0) {
1283 /* Standard Media Information Message */
1284 PRINT_WARN("(%s): MIM SEV=%i, MC=%02x, ES=%x/%x, "
1285 "RC=%02x-%04x-%02x\n", device->cdev->dev.bus_id,
1286 sense->fmt.f70.sev, sense->mc,
1287 sense->fmt.f70.emc, sense->fmt.f70.smc,
1288 sense->fmt.f70.refcode, sense->fmt.f70.mid,
1289 sense->fmt.f70.fid);
1290 tape_3590_print_mim_msg_f0(device, irb);
1293 if (sense->mc == 0xf1) {
1294 /* Standard I/O Subsystem Service Information Message */
1295 PRINT_WARN("(%s): IOSIM SEV=%i, DEVTYPE=3590/%02x, "
1296 "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n",
1297 device->cdev->dev.bus_id, sense->fmt.f71.sev,
1298 device->cdev->id.dev_model,
1299 sense->mc, sense->fmt.f71.emc,
1300 sense->fmt.f71.smc, sense->fmt.f71.refcode1,
1301 sense->fmt.f71.refcode2, sense->fmt.f71.refcode3);
1302 tape_3590_print_io_sim_msg_f1(device, irb);
1305 if (sense->mc == 0xf2) {
1306 /* Standard Device Service Information Message */
1307 PRINT_WARN("(%s): DEVSIM SEV=%i, DEVTYPE=3590/%02x, "
1308 "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n",
1309 device->cdev->dev.bus_id, sense->fmt.f71.sev,
1310 device->cdev->id.dev_model,
1311 sense->mc, sense->fmt.f71.emc,
1312 sense->fmt.f71.smc, sense->fmt.f71.refcode1,
1313 sense->fmt.f71.refcode2, sense->fmt.f71.refcode3);
1314 tape_3590_print_dev_sim_msg_f2(device, irb);
1317 if (sense->mc == 0xf3) {
1318 /* Standard Library Service Information Message */
1321 PRINT_WARN("(%s): Device Message(%x)\n",
1322 device->cdev->dev.bus_id, sense->mc);
1325 static int tape_3590_crypt_error(struct tape_device *device,
1326 struct tape_request *request, struct irb *irb)
1331 char *bus_id, *sense;
1333 sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data;
1334 bus_id = device->cdev->dev.bus_id;
1336 drv_rc = *((u32*) &sense[5]) & 0xffffff;
1338 ekm_rc2 = *((u16*) &sense[10]);
1339 if ((cu_rc == 0) && (ekm_rc2 == 0xee31))
1340 /* key not defined on EKM */
1341 return tape_3590_erp_basic(device, request, irb, -EKEYREJECTED);
1342 if ((cu_rc == 1) || (cu_rc == 2))
1343 /* No connection to EKM */
1344 return tape_3590_erp_basic(device, request, irb, -ENOTCONN);
1346 PRINT_ERR("(%s): Unable to get encryption key from EKM\n", bus_id);
1347 PRINT_ERR("(%s): CU=%02X DRIVE=%06X EKM=%02X:%04X\n", bus_id, cu_rc,
1348 drv_rc, ekm_rc1, ekm_rc2);
1350 return tape_3590_erp_basic(device, request, irb, -ENOKEY);
1354 * 3590 error Recovery routine:
1355 * If possible, it tries to recover from the error. If this is not possible,
1356 * inform the user about the problem.
1359 tape_3590_unit_check(struct tape_device *device, struct tape_request *request,
1362 struct tape_3590_sense *sense;
1365 #ifdef CONFIG_S390_TAPE_BLOCK
1366 if (request->op == TO_BLOCK) {
1368 * Recovery for block device requests. Set the block_position
1369 * to something invalid and retry.
1371 device->blk_data.block_position = -1;
1372 if (request->retries-- <= 0)
1373 return tape_3590_erp_failed(device, request, irb, -EIO);
1375 return tape_3590_erp_retry(device, request, irb);
1379 sense = (struct tape_3590_sense *) irb->ecw;
1381 DBF_EVENT(6, "Unit Check: RQC = %x\n", sense->rc_rqc);
1384 * First check all RC-QRCs where we want to do something special
1385 * - "break": basic error recovery is done
1386 * - "goto out:": just print error message if available
1389 switch (sense->rc_rqc) {
1392 tape_3590_print_era_msg(device, irb);
1393 return tape_3590_erp_read_buf_log(device, request, irb);
1396 tape_3590_print_era_msg(device, irb);
1397 return tape_3590_erp_read_alternate(device, request, irb);
1401 tape_3590_print_era_msg(device, irb);
1402 return tape_3590_erp_special_interrupt(device, request, irb);
1404 return tape_3590_crypt_error(device, request, irb);
1407 DBF_EVENT(2, "(%08x): Backward at Beginning of Partition\n",
1409 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1411 DBF_EVENT(2, "(%08x): Forward at End of Partition\n",
1413 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1415 DBF_EVENT(2, "(%08x): End of Data Mark\n", device->cdev_id);
1416 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1419 DBF_EVENT(2, "(%08x): Rewind Unload initiated\n",
1421 return tape_3590_erp_basic(device, request, irb, -EIO);
1423 DBF_EVENT(2, "(%08x): Rewind Unload complete\n",
1425 tape_med_state_set(device, MS_UNLOADED);
1426 tape_3590_schedule_work(device, TO_CRYPT_OFF);
1427 return tape_3590_erp_basic(device, request, irb, 0);
1431 * print additional msg since default msg
1432 * "device intervention" is not very meaningfull
1434 PRINT_WARN("(%s): Tape operation when medium not loaded\n",
1435 device->cdev->dev.bus_id);
1436 tape_med_state_set(device, MS_UNLOADED);
1437 tape_3590_schedule_work(device, TO_CRYPT_OFF);
1438 return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM);
1439 case 0x4012: /* Device Long Busy */
1440 /* XXX: Also use long busy handling here? */
1441 DBF_EVENT(6, "(%08x): LONG BUSY\n", device->cdev_id);
1442 tape_3590_print_era_msg(device, irb);
1443 return tape_3590_erp_basic(device, request, irb, -EBUSY);
1445 DBF_EVENT(6, "(%08x): Crypto LONG BUSY\n", device->cdev_id);
1446 return tape_3590_erp_long_busy(device, request, irb);
1449 if (sense->rac == 0xd0) {
1451 tape_3590_print_era_msg(device, irb);
1452 return tape_3590_erp_swap(device, request, irb);
1454 if (sense->rac == 0x26) {
1456 tape_3590_print_era_msg(device, irb);
1457 return tape_3590_erp_read_opposite(device, request,
1460 return tape_3590_erp_basic(device, request, irb, -EIO);
1467 tape_3590_print_era_msg(device, irb);
1468 return tape_3590_erp_swap(device, request, irb);
1472 return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE);
1476 tape_med_state_set(device, MS_UNLOADED);
1477 tape_3590_schedule_work(device, TO_CRYPT_OFF);
1478 return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM);
1481 PRINT_WARN("(%s): Cartridge of wrong type ?\n",
1482 device->cdev->dev.bus_id);
1483 return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE);
1486 PRINT_WARN("(%s): Another host has reserved the tape device\n",
1487 device->cdev->dev.bus_id);
1488 return tape_3590_erp_basic(device, request, irb, -EPERM);
1490 PRINT_WARN("(%s): Another host has priviliged access to the "
1491 "tape device\n", device->cdev->dev.bus_id);
1492 PRINT_WARN("(%s): To solve the problem unload the current "
1493 "cartridge!\n", device->cdev->dev.bus_id);
1494 return tape_3590_erp_basic(device, request, irb, -EPERM);
1496 return tape_3590_erp_basic(device, request, irb, -EIO);
1501 * 3590 interrupt handler:
1504 tape_3590_irq(struct tape_device *device, struct tape_request *request,
1507 if (request == NULL)
1508 return tape_3590_unsolicited_irq(device, irb);
1510 if ((irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) &&
1511 (irb->scsw.dstat & DEV_STAT_DEV_END) && (request->op == TO_WRI)) {
1512 /* Write at end of volume */
1513 DBF_EVENT(2, "End of volume\n");
1514 return tape_3590_erp_failed(device, request, irb, -ENOSPC);
1517 if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK)
1518 return tape_3590_unit_check(device, request, irb);
1520 if (irb->scsw.dstat & DEV_STAT_DEV_END) {
1521 if (irb->scsw.dstat == DEV_STAT_UNIT_EXCEP) {
1522 if (request->op == TO_FSB || request->op == TO_BSB)
1525 DBF_EVENT(5, "Unit Exception!\n");
1528 return tape_3590_done(device, request);
1531 if (irb->scsw.dstat & DEV_STAT_CHN_END) {
1532 DBF_EVENT(2, "cannel end\n");
1533 return TAPE_IO_PENDING;
1536 if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
1537 DBF_EVENT(2, "Unit Attention when busy..\n");
1538 return TAPE_IO_PENDING;
1541 DBF_EVENT(6, "xunknownirq\n");
1542 PRINT_ERR("Unexpected interrupt.\n");
1543 PRINT_ERR("Current op is: %s", tape_op_verbose[request->op]);
1544 tape_dump_sense(device, request, irb);
1545 return TAPE_IO_STOP;
1549 static int tape_3590_read_dev_chars(struct tape_device *device,
1550 struct tape_3590_rdc_data *rdc_data)
1553 struct tape_request *request;
1555 request = tape_alloc_request(1, sizeof(*rdc_data));
1556 if (IS_ERR(request))
1557 return PTR_ERR(request);
1558 request->op = TO_RDC;
1559 tape_ccw_end(request->cpaddr, CCW_CMD_RDC, sizeof(*rdc_data),
1561 rc = tape_do_io(device, request);
1563 memcpy(rdc_data, request->cpdata, sizeof(*rdc_data));
1564 tape_free_request(request);
1569 * Setup device function
1572 tape_3590_setup_device(struct tape_device *device)
1575 struct tape_3590_disc_data *data;
1576 struct tape_3590_rdc_data *rdc_data;
1578 DBF_EVENT(6, "3590 device setup\n");
1579 data = kzalloc(sizeof(struct tape_3590_disc_data), GFP_KERNEL | GFP_DMA);
1582 data->read_back_op = READ_PREVIOUS;
1583 device->discdata = data;
1585 rdc_data = kmalloc(sizeof(*rdc_data), GFP_KERNEL | GFP_DMA);
1590 rc = tape_3590_read_dev_chars(device, rdc_data);
1592 DBF_LH(3, "Read device characteristics failed!\n");
1595 rc = tape_std_assign(device);
1598 if (rdc_data->data[31] == 0x13) {
1599 PRINT_INFO("Device has crypto support\n");
1600 data->crypt_info.capability |= TAPE390_CRYPT_SUPPORTED_MASK;
1601 tape_3592_disable_crypt(device);
1603 DBF_EVENT(6, "Device has NO crypto support\n");
1605 /* Try to find out if medium is loaded */
1606 rc = tape_3590_sense_medium(device);
1608 DBF_LH(3, "3590 medium sense returned %d\n", rc);
1621 * Cleanup device function
1624 tape_3590_cleanup_device(struct tape_device *device)
1626 flush_scheduled_work();
1627 tape_std_unassign(device);
1629 kfree(device->discdata);
1630 device->discdata = NULL;
1634 * List of 3590 magnetic tape commands.
1636 static tape_mtop_fn tape_3590_mtop[TAPE_NR_MTOPS] = {
1637 [MTRESET] = tape_std_mtreset,
1638 [MTFSF] = tape_std_mtfsf,
1639 [MTBSF] = tape_std_mtbsf,
1640 [MTFSR] = tape_std_mtfsr,
1641 [MTBSR] = tape_std_mtbsr,
1642 [MTWEOF] = tape_std_mtweof,
1643 [MTREW] = tape_std_mtrew,
1644 [MTOFFL] = tape_std_mtoffl,
1645 [MTNOP] = tape_std_mtnop,
1646 [MTRETEN] = tape_std_mtreten,
1647 [MTBSFM] = tape_std_mtbsfm,
1648 [MTFSFM] = tape_std_mtfsfm,
1649 [MTEOM] = tape_std_mteom,
1650 [MTERASE] = tape_std_mterase,
1654 [MTSETBLK] = tape_std_mtsetblk,
1655 [MTSETDENSITY] = NULL,
1656 [MTSEEK] = tape_3590_mtseek,
1657 [MTTELL] = tape_3590_mttell,
1658 [MTSETDRVBUFFER] = NULL,
1664 [MTLOAD] = tape_std_mtload,
1665 [MTUNLOAD] = tape_std_mtunload,
1666 [MTCOMPRESSION] = tape_std_mtcompression,
1672 * Tape discipline structure for 3590.
1674 static struct tape_discipline tape_discipline_3590 = {
1675 .owner = THIS_MODULE,
1676 .setup_device = tape_3590_setup_device,
1677 .cleanup_device = tape_3590_cleanup_device,
1678 .process_eov = tape_std_process_eov,
1679 .irq = tape_3590_irq,
1680 .read_block = tape_std_read_block,
1681 .write_block = tape_std_write_block,
1682 #ifdef CONFIG_S390_TAPE_BLOCK
1683 .bread = tape_3590_bread,
1684 .free_bread = tape_3590_free_bread,
1685 .check_locate = tape_3590_check_locate,
1687 .ioctl_fn = tape_3590_ioctl,
1688 .mtop_array = tape_3590_mtop
1691 static struct ccw_device_id tape_3590_ids[] = {
1692 {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590},
1693 {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592},
1694 { /* end of list */ }
1698 tape_3590_online(struct ccw_device *cdev)
1700 return tape_generic_online(cdev->dev.driver_data,
1701 &tape_discipline_3590);
1705 tape_3590_offline(struct ccw_device *cdev)
1707 return tape_generic_offline(cdev->dev.driver_data);
1710 static struct ccw_driver tape_3590_driver = {
1711 .name = "tape_3590",
1712 .owner = THIS_MODULE,
1713 .ids = tape_3590_ids,
1714 .probe = tape_generic_probe,
1715 .remove = tape_generic_remove,
1716 .set_offline = tape_3590_offline,
1717 .set_online = tape_3590_online,
1721 * Setup discipline structure.
1724 tape_3590_init(void)
1728 TAPE_DBF_AREA = debug_register("tape_3590", 2, 2, 4 * sizeof(long));
1729 debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view);
1730 #ifdef DBF_LIKE_HELL
1731 debug_set_level(TAPE_DBF_AREA, 6);
1734 DBF_EVENT(3, "3590 init\n");
1735 /* Register driver for 3590 tapes. */
1736 rc = ccw_driver_register(&tape_3590_driver);
1738 DBF_EVENT(3, "3590 init failed\n");
1740 DBF_EVENT(3, "3590 registered\n");
1745 tape_3590_exit(void)
1747 ccw_driver_unregister(&tape_3590_driver);
1749 debug_unregister(TAPE_DBF_AREA);
1752 MODULE_DEVICE_TABLE(ccw, tape_3590_ids);
1753 MODULE_AUTHOR("(C) 2001,2006 IBM Corporation");
1754 MODULE_DESCRIPTION("Linux on zSeries channel attached 3590 tape device driver");
1755 MODULE_LICENSE("GPL");
1757 module_init(tape_3590_init);
1758 module_exit(tape_3590_exit);