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;
657 off += TAPEBLOCK_HSEC_SIZE) {
658 ccw->flags = CCW_FLAG_CC;
659 ccw->cmd_code = READ_FORWARD;
660 ccw->count = TAPEBLOCK_HSEC_SIZE;
661 set_normalized_cda(ccw, (void *) __pa(dst));
663 dst += TAPEBLOCK_HSEC_SIZE;
665 if (off > bv->bv_len)
668 ccw = tape_ccw_end(ccw, NOP, 0, NULL);
669 DBF_EVENT(6, "xBREDccwg\n");
674 tape_3590_free_bread(struct tape_request *request)
678 /* Last ccw is a nop and doesn't need clear_normalized_cda */
679 for (ccw = request->cpaddr; ccw->flags & CCW_FLAG_CC; ccw++)
680 if (ccw->cmd_code == READ_FORWARD)
681 clear_normalized_cda(ccw);
682 tape_free_request(request);
686 * check_locate is called just before the tape request is passed to
687 * the common io layer for execution. It has to check the current
688 * tape position and insert a locate ccw if it doesn't match the
689 * start block for the request.
692 tape_3590_check_locate(struct tape_device *device, struct tape_request *request)
696 start_block = (__u32 *) request->cpdata;
697 if (*start_block != device->blk_data.block_position) {
698 /* Add the start offset of the file to get the real block. */
699 *start_block += device->bof;
700 tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata);
705 static void tape_3590_med_state_set(struct tape_device *device,
706 struct tape_3590_med_sense *sense)
708 struct tape390_crypt_info *c_info;
710 c_info = &TAPE_3590_CRYPT_INFO(device);
712 if (sense->masst == MSENSE_UNASSOCIATED) {
713 tape_med_state_set(device, MS_UNLOADED);
714 TAPE_3590_CRYPT_INFO(device).medium_status = 0;
717 if (sense->masst != MSENSE_ASSOCIATED_MOUNT) {
718 PRINT_ERR("Unknown medium state: %x\n", sense->masst);
721 tape_med_state_set(device, MS_LOADED);
722 c_info->medium_status |= TAPE390_MEDIUM_LOADED_MASK;
723 if (sense->flags & MSENSE_CRYPT_MASK) {
724 PRINT_INFO("Medium is encrypted (%04x)\n", sense->flags);
725 c_info->medium_status |= TAPE390_MEDIUM_ENCRYPTED_MASK;
727 DBF_EVENT(6, "Medium is not encrypted %04x\n", sense->flags);
728 c_info->medium_status &= ~TAPE390_MEDIUM_ENCRYPTED_MASK;
733 * The done handler is called at device/channel end and wakes up the sleeping
737 tape_3590_done(struct tape_device *device, struct tape_request *request)
739 struct tape_3590_disc_data *disc_data;
741 DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]);
742 disc_data = device->discdata;
744 switch (request->op) {
758 tape_med_state_set(device, MS_LOADED);
761 tape_med_state_set(device, MS_UNLOADED);
762 tape_3590_schedule_work(device, TO_CRYPT_OFF);
765 tape_3590_med_state_set(device, request->cpdata);
768 TAPE_3590_CRYPT_INFO(device).status
769 |= TAPE390_CRYPT_ON_MASK;
770 *(device->modeset_byte) |= 0x03;
773 TAPE_3590_CRYPT_INFO(device).status
774 &= ~TAPE390_CRYPT_ON_MASK;
775 *(device->modeset_byte) &= ~0x03;
777 case TO_RBI: /* RBI seems to succeed even without medium loaded. */
778 case TO_NOP: /* Same to NOP. */
790 return TAPE_IO_SUCCESS;
794 * This fuction is called, when error recovery was successfull
797 tape_3590_erp_succeded(struct tape_device *device, struct tape_request *request)
799 DBF_EVENT(3, "Error Recovery successfull for %s\n",
800 tape_op_verbose[request->op]);
801 return tape_3590_done(device, request);
805 * This fuction is called, when error recovery was not successfull
808 tape_3590_erp_failed(struct tape_device *device, struct tape_request *request,
809 struct irb *irb, int rc)
811 DBF_EVENT(3, "Error Recovery failed for %s\n",
812 tape_op_verbose[request->op]);
813 tape_dump_sense_dbf(device, request, irb);
818 * Error Recovery do retry
821 tape_3590_erp_retry(struct tape_device *device, struct tape_request *request,
824 DBF_EVENT(2, "Retry: %s\n", tape_op_verbose[request->op]);
825 tape_dump_sense_dbf(device, request, irb);
826 return TAPE_IO_RETRY;
830 * Handle unsolicited interrupts
833 tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb)
835 if (irb->scsw.dstat == DEV_STAT_CHN_END)
836 /* Probably result of halt ssch */
837 return TAPE_IO_PENDING;
838 else if (irb->scsw.dstat == 0x85)
839 /* Device Ready -> check medium state */
840 tape_3590_schedule_work(device, TO_MSEN);
841 else if (irb->scsw.dstat & DEV_STAT_ATTENTION)
842 tape_3590_schedule_work(device, TO_READ_ATTMSG);
844 DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id);
845 PRINT_WARN("Unsolicited IRQ (Device End) caught.\n");
846 tape_dump_sense(device, NULL, irb);
848 return TAPE_IO_SUCCESS;
852 * Basic Recovery routine
855 tape_3590_erp_basic(struct tape_device *device, struct tape_request *request,
856 struct irb *irb, int rc)
858 struct tape_3590_sense *sense;
860 sense = (struct tape_3590_sense *) irb->ecw;
862 switch (sense->bra) {
864 return tape_3590_erp_failed(device, request, irb, rc);
866 return tape_3590_erp_succeded(device, request);
868 return tape_3590_erp_retry(device, request, irb);
870 return tape_3590_erp_failed(device, request, irb, rc);
872 PRINT_ERR("Unknown BRA %x - This should not happen!\n",
880 * RDL: Read Device (buffered) log
883 tape_3590_erp_read_buf_log(struct tape_device *device,
884 struct tape_request *request, struct irb *irb)
887 * We just do the basic error recovery at the moment (retry).
888 * Perhaps in the future, we read the log and dump it somewhere...
890 return tape_3590_erp_basic(device, request, irb, -EIO);
897 tape_3590_erp_swap(struct tape_device *device, struct tape_request *request,
901 * This error recovery should swap the tapes
902 * if the original has a problem. The operation
903 * should proceed with the new tape... this
904 * should probably be done in user space!
906 PRINT_WARN("(%s): Swap Tape Device!\n", device->cdev->dev.bus_id);
907 return tape_3590_erp_basic(device, request, irb, -EIO);
914 tape_3590_erp_long_busy(struct tape_device *device,
915 struct tape_request *request, struct irb *irb)
917 DBF_EVENT(6, "Device is busy\n");
918 return TAPE_IO_LONG_BUSY;
922 * SPI: Special Intercept
925 tape_3590_erp_special_interrupt(struct tape_device *device,
926 struct tape_request *request, struct irb *irb)
928 return tape_3590_erp_basic(device, request, irb, -EIO);
932 * RDA: Read Alternate
935 tape_3590_erp_read_alternate(struct tape_device *device,
936 struct tape_request *request, struct irb *irb)
938 struct tape_3590_disc_data *data;
941 * The issued Read Backward or Read Previous command is not
942 * supported by the device
943 * The recovery action should be to issue another command:
944 * Read Revious: if Read Backward is not supported
945 * Read Backward: if Read Previous is not supported
947 data = device->discdata;
948 if (data->read_back_op == READ_PREVIOUS) {
949 DBF_EVENT(2, "(%08x): No support for READ_PREVIOUS command\n",
951 data->read_back_op = READ_BACKWARD;
953 DBF_EVENT(2, "(%08x): No support for READ_BACKWARD command\n",
955 data->read_back_op = READ_PREVIOUS;
957 tape_3590_read_opposite(device, request);
958 return tape_3590_erp_retry(device, request, irb);
962 * Error Recovery read opposite
965 tape_3590_erp_read_opposite(struct tape_device *device,
966 struct tape_request *request, struct irb *irb)
968 switch (request->op) {
971 * We did read forward, but the data could not be read.
972 * We will read backward and then skip forward again.
974 tape_3590_read_opposite(device, request);
975 return tape_3590_erp_retry(device, request, irb);
977 /* We tried to read forward and backward, but hat no success */
978 return tape_3590_erp_failed(device, request, irb, -EIO);
981 PRINT_WARN("read_opposite_recovery_called_with_op: %s\n",
982 tape_op_verbose[request->op]);
983 return tape_3590_erp_failed(device, request, irb, -EIO);
988 * Print an MIM (Media Information Message) (message code f0)
991 tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb)
993 struct tape_3590_sense *sense;
995 sense = (struct tape_3590_sense *) irb->ecw;
996 /* Exception Message */
997 switch (sense->fmt.f70.emc) {
999 PRINT_WARN("(%s): Data degraded\n", device->cdev->dev.bus_id);
1002 PRINT_WARN("(%s): Data degraded in partion %i\n",
1003 device->cdev->dev.bus_id, sense->fmt.f70.mp);
1006 PRINT_WARN("(%s): Medium degraded\n", device->cdev->dev.bus_id);
1009 PRINT_WARN("(%s): Medium degraded in partition %i\n",
1010 device->cdev->dev.bus_id, sense->fmt.f70.mp);
1013 PRINT_WARN("(%s): Block 0 Error\n", device->cdev->dev.bus_id);
1016 PRINT_WARN("(%s): Medium Exception 0x%02x\n",
1017 device->cdev->dev.bus_id, sense->fmt.f70.md);
1020 PRINT_WARN("(%s): MIM ExMsg: 0x%02x\n",
1021 device->cdev->dev.bus_id, sense->fmt.f70.emc);
1024 /* Service Message */
1025 switch (sense->fmt.f70.smc) {
1027 PRINT_WARN("(%s): Reference Media maintenance procedure %i\n",
1028 device->cdev->dev.bus_id, sense->fmt.f70.md);
1031 PRINT_WARN("(%s): MIM ServiceMsg: 0x%02x\n",
1032 device->cdev->dev.bus_id, sense->fmt.f70.smc);
1038 * Print an I/O Subsystem Service Information Message (message code f1)
1041 tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb)
1043 struct tape_3590_sense *sense;
1045 sense = (struct tape_3590_sense *) irb->ecw;
1046 /* Exception Message */
1047 switch (sense->fmt.f71.emc) {
1049 PRINT_WARN("(%s): Effect of failure is unknown\n",
1050 device->cdev->dev.bus_id);
1053 PRINT_WARN("(%s): CU Exception - no performance impact\n",
1054 device->cdev->dev.bus_id);
1057 PRINT_WARN("(%s): CU Exception on channel interface 0x%02x\n",
1058 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1061 PRINT_WARN("(%s): CU Exception on device path 0x%02x\n",
1062 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1065 PRINT_WARN("(%s): CU Exception on library path 0x%02x\n",
1066 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1069 PRINT_WARN("(%s): CU Exception on node 0x%02x\n",
1070 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1073 PRINT_WARN("(%s): CU Exception on partition 0x%02x\n",
1074 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1077 PRINT_WARN("(%s): SIM ExMsg: 0x%02x\n",
1078 device->cdev->dev.bus_id, sense->fmt.f71.emc);
1080 /* Service Message */
1081 switch (sense->fmt.f71.smc) {
1083 PRINT_WARN("(%s): Repair impact is unknown\n",
1084 device->cdev->dev.bus_id);
1087 PRINT_WARN("(%s): Repair will not impact cu performance\n",
1088 device->cdev->dev.bus_id);
1091 if (sense->fmt.f71.mdf == 0)
1092 PRINT_WARN("(%s): Repair will disable node "
1094 device->cdev->dev.bus_id,
1095 sense->fmt.f71.md[1]);
1097 PRINT_WARN("(%s): Repair will disable nodes "
1098 "(0x%x-0x%x) on CU\n",
1099 device->cdev->dev.bus_id,
1100 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1103 if (sense->fmt.f71.mdf == 0)
1104 PRINT_WARN("(%s): Repair will disable cannel path "
1106 device->cdev->dev.bus_id,
1107 sense->fmt.f71.md[1]);
1109 PRINT_WARN("(%s): Repair will disable cannel paths "
1110 "(0x%x-0x%x) on CU\n",
1111 device->cdev->dev.bus_id,
1112 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1115 if (sense->fmt.f71.mdf == 0)
1116 PRINT_WARN("(%s): Repair will disable device path "
1118 device->cdev->dev.bus_id,
1119 sense->fmt.f71.md[1]);
1121 PRINT_WARN("(%s): Repair will disable device paths "
1122 "(0x%x-0x%x) on CU\n",
1123 device->cdev->dev.bus_id,
1124 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1127 if (sense->fmt.f71.mdf == 0)
1128 PRINT_WARN("(%s): Repair will disable library path "
1130 device->cdev->dev.bus_id,
1131 sense->fmt.f71.md[1]);
1133 PRINT_WARN("(%s): Repair will disable library paths "
1134 "(0x%x-0x%x) on CU\n",
1135 device->cdev->dev.bus_id,
1136 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1139 PRINT_WARN("(%s): Repair will disable access to CU\n",
1140 device->cdev->dev.bus_id);
1143 PRINT_WARN("(%s): SIM ServiceMsg: 0x%02x\n",
1144 device->cdev->dev.bus_id, sense->fmt.f71.smc);
1149 * Print an Device Subsystem Service Information Message (message code f2)
1152 tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb)
1154 struct tape_3590_sense *sense;
1156 sense = (struct tape_3590_sense *) irb->ecw;
1157 /* Exception Message */
1158 switch (sense->fmt.f71.emc) {
1160 PRINT_WARN("(%s): Effect of failure is unknown\n",
1161 device->cdev->dev.bus_id);
1164 PRINT_WARN("(%s): DV Exception - no performance impact\n",
1165 device->cdev->dev.bus_id);
1168 PRINT_WARN("(%s): DV Exception on channel interface 0x%02x\n",
1169 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1172 PRINT_WARN("(%s): DV Exception on loader 0x%02x\n",
1173 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1176 PRINT_WARN("(%s): DV Exception on message display 0x%02x\n",
1177 device->cdev->dev.bus_id, sense->fmt.f71.md[0]);
1180 PRINT_WARN("(%s): DV Exception in tape path\n",
1181 device->cdev->dev.bus_id);
1184 PRINT_WARN("(%s): DV Exception in drive\n",
1185 device->cdev->dev.bus_id);
1188 PRINT_WARN("(%s): DSIM ExMsg: 0x%02x\n",
1189 device->cdev->dev.bus_id, sense->fmt.f71.emc);
1191 /* Service Message */
1192 switch (sense->fmt.f71.smc) {
1194 PRINT_WARN("(%s): Repair impact is unknown\n",
1195 device->cdev->dev.bus_id);
1198 PRINT_WARN("(%s): Repair will not impact device performance\n",
1199 device->cdev->dev.bus_id);
1202 if (sense->fmt.f71.mdf == 0)
1203 PRINT_WARN("(%s): Repair will disable channel path "
1205 device->cdev->dev.bus_id,
1206 sense->fmt.f71.md[1]);
1208 PRINT_WARN("(%s): Repair will disable channel path "
1209 "(0x%x-0x%x) on DV\n",
1210 device->cdev->dev.bus_id,
1211 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1214 if (sense->fmt.f71.mdf == 0)
1215 PRINT_WARN("(%s): Repair will disable interface 0x%x "
1217 device->cdev->dev.bus_id,
1218 sense->fmt.f71.md[1]);
1220 PRINT_WARN("(%s): Repair will disable interfaces "
1221 "(0x%x-0x%x) on DV\n",
1222 device->cdev->dev.bus_id,
1223 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1226 if (sense->fmt.f71.mdf == 0)
1227 PRINT_WARN("(%s): Repair will disable loader 0x%x "
1229 device->cdev->dev.bus_id,
1230 sense->fmt.f71.md[1]);
1232 PRINT_WARN("(%s): Repair will disable loader "
1233 "(0x%x-0x%x) on DV\n",
1234 device->cdev->dev.bus_id,
1235 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1238 PRINT_WARN("(%s): Repair will disable access to DV\n",
1239 device->cdev->dev.bus_id);
1242 if (sense->fmt.f71.mdf == 0)
1243 PRINT_WARN("(%s): Repair will disable message "
1244 "display 0x%x on DV\n",
1245 device->cdev->dev.bus_id,
1246 sense->fmt.f71.md[1]);
1248 PRINT_WARN("(%s): Repair will disable message "
1249 "displays (0x%x-0x%x) on DV\n",
1250 device->cdev->dev.bus_id,
1251 sense->fmt.f71.md[1], sense->fmt.f71.md[2]);
1254 PRINT_WARN("(%s): Clean DV\n", device->cdev->dev.bus_id);
1257 PRINT_WARN("(%s): DSIM ServiceMsg: 0x%02x\n",
1258 device->cdev->dev.bus_id, sense->fmt.f71.smc);
1263 * Print standard ERA Message
1266 tape_3590_print_era_msg(struct tape_device *device, struct irb *irb)
1268 struct tape_3590_sense *sense;
1270 sense = (struct tape_3590_sense *) irb->ecw;
1273 if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) {
1274 if (tape_3590_msg[sense->mc] != NULL)
1275 PRINT_WARN("(%s): %s\n", device->cdev->dev.bus_id,
1276 tape_3590_msg[sense->mc]);
1278 PRINT_WARN("(%s): Message Code 0x%x\n",
1279 device->cdev->dev.bus_id, sense->mc);
1283 if (sense->mc == 0xf0) {
1284 /* Standard Media Information Message */
1285 PRINT_WARN("(%s): MIM SEV=%i, MC=%02x, ES=%x/%x, "
1286 "RC=%02x-%04x-%02x\n", device->cdev->dev.bus_id,
1287 sense->fmt.f70.sev, sense->mc,
1288 sense->fmt.f70.emc, sense->fmt.f70.smc,
1289 sense->fmt.f70.refcode, sense->fmt.f70.mid,
1290 sense->fmt.f70.fid);
1291 tape_3590_print_mim_msg_f0(device, irb);
1294 if (sense->mc == 0xf1) {
1295 /* Standard I/O Subsystem Service Information Message */
1296 PRINT_WARN("(%s): IOSIM SEV=%i, DEVTYPE=3590/%02x, "
1297 "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n",
1298 device->cdev->dev.bus_id, sense->fmt.f71.sev,
1299 device->cdev->id.dev_model,
1300 sense->mc, sense->fmt.f71.emc,
1301 sense->fmt.f71.smc, sense->fmt.f71.refcode1,
1302 sense->fmt.f71.refcode2, sense->fmt.f71.refcode3);
1303 tape_3590_print_io_sim_msg_f1(device, irb);
1306 if (sense->mc == 0xf2) {
1307 /* Standard Device Service Information Message */
1308 PRINT_WARN("(%s): DEVSIM SEV=%i, DEVTYPE=3590/%02x, "
1309 "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n",
1310 device->cdev->dev.bus_id, sense->fmt.f71.sev,
1311 device->cdev->id.dev_model,
1312 sense->mc, sense->fmt.f71.emc,
1313 sense->fmt.f71.smc, sense->fmt.f71.refcode1,
1314 sense->fmt.f71.refcode2, sense->fmt.f71.refcode3);
1315 tape_3590_print_dev_sim_msg_f2(device, irb);
1318 if (sense->mc == 0xf3) {
1319 /* Standard Library Service Information Message */
1322 PRINT_WARN("(%s): Device Message(%x)\n",
1323 device->cdev->dev.bus_id, sense->mc);
1326 static int tape_3590_crypt_error(struct tape_device *device,
1327 struct tape_request *request, struct irb *irb)
1332 char *bus_id, *sense;
1334 sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data;
1335 bus_id = device->cdev->dev.bus_id;
1337 drv_rc = *((u32*) &sense[5]) & 0xffffff;
1339 ekm_rc2 = *((u16*) &sense[10]);
1340 if ((cu_rc == 0) && (ekm_rc2 == 0xee31))
1341 /* key not defined on EKM */
1342 return tape_3590_erp_basic(device, request, irb, -EKEYREJECTED);
1343 if ((cu_rc == 1) || (cu_rc == 2))
1344 /* No connection to EKM */
1345 return tape_3590_erp_basic(device, request, irb, -ENOTCONN);
1347 PRINT_ERR("(%s): Unable to get encryption key from EKM\n", bus_id);
1348 PRINT_ERR("(%s): CU=%02X DRIVE=%06X EKM=%02X:%04X\n", bus_id, cu_rc,
1349 drv_rc, ekm_rc1, ekm_rc2);
1351 return tape_3590_erp_basic(device, request, irb, -ENOKEY);
1355 * 3590 error Recovery routine:
1356 * If possible, it tries to recover from the error. If this is not possible,
1357 * inform the user about the problem.
1360 tape_3590_unit_check(struct tape_device *device, struct tape_request *request,
1363 struct tape_3590_sense *sense;
1366 #ifdef CONFIG_S390_TAPE_BLOCK
1367 if (request->op == TO_BLOCK) {
1369 * Recovery for block device requests. Set the block_position
1370 * to something invalid and retry.
1372 device->blk_data.block_position = -1;
1373 if (request->retries-- <= 0)
1374 return tape_3590_erp_failed(device, request, irb, -EIO);
1376 return tape_3590_erp_retry(device, request, irb);
1380 sense = (struct tape_3590_sense *) irb->ecw;
1382 DBF_EVENT(6, "Unit Check: RQC = %x\n", sense->rc_rqc);
1385 * First check all RC-QRCs where we want to do something special
1386 * - "break": basic error recovery is done
1387 * - "goto out:": just print error message if available
1390 switch (sense->rc_rqc) {
1393 tape_3590_print_era_msg(device, irb);
1394 return tape_3590_erp_read_buf_log(device, request, irb);
1397 tape_3590_print_era_msg(device, irb);
1398 return tape_3590_erp_read_alternate(device, request, irb);
1402 tape_3590_print_era_msg(device, irb);
1403 return tape_3590_erp_special_interrupt(device, request, irb);
1405 return tape_3590_crypt_error(device, request, irb);
1408 DBF_EVENT(2, "(%08x): Backward at Beginning of Partition\n",
1410 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1412 DBF_EVENT(2, "(%08x): Forward at End of Partition\n",
1414 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1416 DBF_EVENT(2, "(%08x): End of Data Mark\n", device->cdev_id);
1417 return tape_3590_erp_basic(device, request, irb, -ENOSPC);
1420 DBF_EVENT(2, "(%08x): Rewind Unload initiated\n",
1422 return tape_3590_erp_basic(device, request, irb, -EIO);
1424 DBF_EVENT(2, "(%08x): Rewind Unload complete\n",
1426 tape_med_state_set(device, MS_UNLOADED);
1427 tape_3590_schedule_work(device, TO_CRYPT_OFF);
1428 return tape_3590_erp_basic(device, request, irb, 0);
1432 * print additional msg since default msg
1433 * "device intervention" is not very meaningfull
1435 PRINT_WARN("(%s): Tape operation when medium not loaded\n",
1436 device->cdev->dev.bus_id);
1437 tape_med_state_set(device, MS_UNLOADED);
1438 tape_3590_schedule_work(device, TO_CRYPT_OFF);
1439 return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM);
1440 case 0x4012: /* Device Long Busy */
1441 /* XXX: Also use long busy handling here? */
1442 DBF_EVENT(6, "(%08x): LONG BUSY\n", device->cdev_id);
1443 tape_3590_print_era_msg(device, irb);
1444 return tape_3590_erp_basic(device, request, irb, -EBUSY);
1446 DBF_EVENT(6, "(%08x): Crypto LONG BUSY\n", device->cdev_id);
1447 return tape_3590_erp_long_busy(device, request, irb);
1450 if (sense->rac == 0xd0) {
1452 tape_3590_print_era_msg(device, irb);
1453 return tape_3590_erp_swap(device, request, irb);
1455 if (sense->rac == 0x26) {
1457 tape_3590_print_era_msg(device, irb);
1458 return tape_3590_erp_read_opposite(device, request,
1461 return tape_3590_erp_basic(device, request, irb, -EIO);
1468 tape_3590_print_era_msg(device, irb);
1469 return tape_3590_erp_swap(device, request, irb);
1473 return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE);
1477 tape_med_state_set(device, MS_UNLOADED);
1478 tape_3590_schedule_work(device, TO_CRYPT_OFF);
1479 return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM);
1482 PRINT_WARN("(%s): Cartridge of wrong type ?\n",
1483 device->cdev->dev.bus_id);
1484 return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE);
1487 PRINT_WARN("(%s): Another host has reserved the tape device\n",
1488 device->cdev->dev.bus_id);
1489 return tape_3590_erp_basic(device, request, irb, -EPERM);
1491 PRINT_WARN("(%s): Another host has priviliged access to the "
1492 "tape device\n", device->cdev->dev.bus_id);
1493 PRINT_WARN("(%s): To solve the problem unload the current "
1494 "cartridge!\n", device->cdev->dev.bus_id);
1495 return tape_3590_erp_basic(device, request, irb, -EPERM);
1497 return tape_3590_erp_basic(device, request, irb, -EIO);
1502 * 3590 interrupt handler:
1505 tape_3590_irq(struct tape_device *device, struct tape_request *request,
1508 if (request == NULL)
1509 return tape_3590_unsolicited_irq(device, irb);
1511 if ((irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) &&
1512 (irb->scsw.dstat & DEV_STAT_DEV_END) && (request->op == TO_WRI)) {
1513 /* Write at end of volume */
1514 DBF_EVENT(2, "End of volume\n");
1515 return tape_3590_erp_failed(device, request, irb, -ENOSPC);
1518 if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK)
1519 return tape_3590_unit_check(device, request, irb);
1521 if (irb->scsw.dstat & DEV_STAT_DEV_END) {
1522 if (irb->scsw.dstat == DEV_STAT_UNIT_EXCEP) {
1523 if (request->op == TO_FSB || request->op == TO_BSB)
1526 DBF_EVENT(5, "Unit Exception!\n");
1529 return tape_3590_done(device, request);
1532 if (irb->scsw.dstat & DEV_STAT_CHN_END) {
1533 DBF_EVENT(2, "cannel end\n");
1534 return TAPE_IO_PENDING;
1537 if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
1538 DBF_EVENT(2, "Unit Attention when busy..\n");
1539 return TAPE_IO_PENDING;
1542 DBF_EVENT(6, "xunknownirq\n");
1543 PRINT_ERR("Unexpected interrupt.\n");
1544 PRINT_ERR("Current op is: %s", tape_op_verbose[request->op]);
1545 tape_dump_sense(device, request, irb);
1546 return TAPE_IO_STOP;
1550 static int tape_3590_read_dev_chars(struct tape_device *device,
1551 struct tape_3590_rdc_data *rdc_data)
1554 struct tape_request *request;
1556 request = tape_alloc_request(1, sizeof(*rdc_data));
1557 if (IS_ERR(request))
1558 return PTR_ERR(request);
1559 request->op = TO_RDC;
1560 tape_ccw_end(request->cpaddr, CCW_CMD_RDC, sizeof(*rdc_data),
1562 rc = tape_do_io(device, request);
1564 memcpy(rdc_data, request->cpdata, sizeof(*rdc_data));
1565 tape_free_request(request);
1570 * Setup device function
1573 tape_3590_setup_device(struct tape_device *device)
1576 struct tape_3590_disc_data *data;
1577 struct tape_3590_rdc_data *rdc_data;
1579 DBF_EVENT(6, "3590 device setup\n");
1580 data = kzalloc(sizeof(struct tape_3590_disc_data), GFP_KERNEL | GFP_DMA);
1583 data->read_back_op = READ_PREVIOUS;
1584 device->discdata = data;
1586 rdc_data = kmalloc(sizeof(*rdc_data), GFP_KERNEL | GFP_DMA);
1591 rc = tape_3590_read_dev_chars(device, rdc_data);
1593 DBF_LH(3, "Read device characteristics failed!\n");
1596 rc = tape_std_assign(device);
1599 if (rdc_data->data[31] == 0x13) {
1600 PRINT_INFO("Device has crypto support\n");
1601 data->crypt_info.capability |= TAPE390_CRYPT_SUPPORTED_MASK;
1602 tape_3592_disable_crypt(device);
1604 DBF_EVENT(6, "Device has NO crypto support\n");
1606 /* Try to find out if medium is loaded */
1607 rc = tape_3590_sense_medium(device);
1609 DBF_LH(3, "3590 medium sense returned %d\n", rc);
1622 * Cleanup device function
1625 tape_3590_cleanup_device(struct tape_device *device)
1627 flush_scheduled_work();
1628 tape_std_unassign(device);
1630 kfree(device->discdata);
1631 device->discdata = NULL;
1635 * List of 3590 magnetic tape commands.
1637 static tape_mtop_fn tape_3590_mtop[TAPE_NR_MTOPS] = {
1638 [MTRESET] = tape_std_mtreset,
1639 [MTFSF] = tape_std_mtfsf,
1640 [MTBSF] = tape_std_mtbsf,
1641 [MTFSR] = tape_std_mtfsr,
1642 [MTBSR] = tape_std_mtbsr,
1643 [MTWEOF] = tape_std_mtweof,
1644 [MTREW] = tape_std_mtrew,
1645 [MTOFFL] = tape_std_mtoffl,
1646 [MTNOP] = tape_std_mtnop,
1647 [MTRETEN] = tape_std_mtreten,
1648 [MTBSFM] = tape_std_mtbsfm,
1649 [MTFSFM] = tape_std_mtfsfm,
1650 [MTEOM] = tape_std_mteom,
1651 [MTERASE] = tape_std_mterase,
1655 [MTSETBLK] = tape_std_mtsetblk,
1656 [MTSETDENSITY] = NULL,
1657 [MTSEEK] = tape_3590_mtseek,
1658 [MTTELL] = tape_3590_mttell,
1659 [MTSETDRVBUFFER] = NULL,
1665 [MTLOAD] = tape_std_mtload,
1666 [MTUNLOAD] = tape_std_mtunload,
1667 [MTCOMPRESSION] = tape_std_mtcompression,
1673 * Tape discipline structure for 3590.
1675 static struct tape_discipline tape_discipline_3590 = {
1676 .owner = THIS_MODULE,
1677 .setup_device = tape_3590_setup_device,
1678 .cleanup_device = tape_3590_cleanup_device,
1679 .process_eov = tape_std_process_eov,
1680 .irq = tape_3590_irq,
1681 .read_block = tape_std_read_block,
1682 .write_block = tape_std_write_block,
1683 #ifdef CONFIG_S390_TAPE_BLOCK
1684 .bread = tape_3590_bread,
1685 .free_bread = tape_3590_free_bread,
1686 .check_locate = tape_3590_check_locate,
1688 .ioctl_fn = tape_3590_ioctl,
1689 .mtop_array = tape_3590_mtop
1692 static struct ccw_device_id tape_3590_ids[] = {
1693 {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590},
1694 {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592},
1695 { /* end of list */ }
1699 tape_3590_online(struct ccw_device *cdev)
1701 return tape_generic_online(cdev->dev.driver_data,
1702 &tape_discipline_3590);
1706 tape_3590_offline(struct ccw_device *cdev)
1708 return tape_generic_offline(cdev->dev.driver_data);
1711 static struct ccw_driver tape_3590_driver = {
1712 .name = "tape_3590",
1713 .owner = THIS_MODULE,
1714 .ids = tape_3590_ids,
1715 .probe = tape_generic_probe,
1716 .remove = tape_generic_remove,
1717 .set_offline = tape_3590_offline,
1718 .set_online = tape_3590_online,
1722 * Setup discipline structure.
1725 tape_3590_init(void)
1729 TAPE_DBF_AREA = debug_register("tape_3590", 2, 2, 4 * sizeof(long));
1730 debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view);
1731 #ifdef DBF_LIKE_HELL
1732 debug_set_level(TAPE_DBF_AREA, 6);
1735 DBF_EVENT(3, "3590 init\n");
1736 /* Register driver for 3590 tapes. */
1737 rc = ccw_driver_register(&tape_3590_driver);
1739 DBF_EVENT(3, "3590 init failed\n");
1741 DBF_EVENT(3, "3590 registered\n");
1746 tape_3590_exit(void)
1748 ccw_driver_unregister(&tape_3590_driver);
1750 debug_unregister(TAPE_DBF_AREA);
1753 MODULE_DEVICE_TABLE(ccw, tape_3590_ids);
1754 MODULE_AUTHOR("(C) 2001,2006 IBM Corporation");
1755 MODULE_DESCRIPTION("Linux on zSeries channel attached 3590 tape device driver");
1756 MODULE_LICENSE("GPL");
1758 module_init(tape_3590_init);
1759 module_exit(tape_3590_exit);