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s390x: cleanup interrupt injection
[qemu.git] / hw / scsi / spapr_vscsi.c
blobd4ada4f3353841e62e378139ea8ed0ebb8bc9b24
1 /*
2 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
3 *
4 * PAPR Virtual SCSI, aka ibmvscsi
5 *
6 * Copyright (c) 2010,2011 Benjamin Herrenschmidt, IBM Corporation.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 *
26 * TODO:
27 *
28 * - Cleanups :-)
29 * - Sort out better how to assign devices to VSCSI instances
30 * - Fix residual counts
31 * - Add indirect descriptors support
32 * - Maybe do autosense (PAPR seems to mandate it, linux doesn't care)
33 */
34 #include "hw/hw.h"
35 #include "hw/scsi/scsi.h"
36 #include "block/scsi.h"
37 #include "srp.h"
38 #include "hw/qdev.h"
39 #include "hw/ppc/spapr.h"
40 #include "hw/ppc/spapr_vio.h"
41 #include "viosrp.h"
42
43 #include <libfdt.h>
44
45 /*#define DEBUG_VSCSI*/
46
47 #ifdef DEBUG_VSCSI
48 #define DPRINTF(fmt, ...) \
49 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
50 #else
51 #define DPRINTF(fmt, ...) \
52 do { } while (0)
53 #endif
54
55 /*
56 * Virtual SCSI device
57 */
58
59 /* Random numbers */
60 #define VSCSI_MAX_SECTORS 4096
61 #define VSCSI_REQ_LIMIT 24
62
63 #define SRP_RSP_SENSE_DATA_LEN 18
64
65 #define SRP_REPORT_LUNS_WLUN 0xc10100000000000ULL
66
67 typedef union vscsi_crq {
68 struct viosrp_crq s;
69 uint8_t raw[16];
70 } vscsi_crq;
71
72 typedef struct vscsi_req {
73 vscsi_crq crq;
74 union viosrp_iu iu;
75
76 /* SCSI request tracking */
77 SCSIRequest *sreq;
78 uint32_t qtag; /* qemu tag != srp tag */
79 bool active;
80 uint32_t data_len;
81 bool writing;
82 uint32_t senselen;
83 uint8_t sense[SCSI_SENSE_BUF_SIZE];
84
85 /* RDMA related bits */
86 uint8_t dma_fmt;
87 uint16_t local_desc;
88 uint16_t total_desc;
89 uint16_t cdb_offset;
90 uint16_t cur_desc_num;
91 uint16_t cur_desc_offset;
92 } vscsi_req;
93
94 #define TYPE_VIO_SPAPR_VSCSI_DEVICE "spapr-vscsi"
95 #define VIO_SPAPR_VSCSI_DEVICE(obj) \
96 OBJECT_CHECK(VSCSIState, (obj), TYPE_VIO_SPAPR_VSCSI_DEVICE)
97
98 typedef struct {
99 VIOsPAPRDevice vdev;
100 SCSIBus bus;
101 vscsi_req reqs[VSCSI_REQ_LIMIT];
102 } VSCSIState;
103
104 static struct vscsi_req *vscsi_get_req(VSCSIState *s)
105 {
106 vscsi_req *req;
107 int i;
108
109 for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
110 req = &s->reqs[i];
111 if (!req->active) {
112 memset(req, 0, sizeof(*req));
113 req->qtag = i;
114 req->active = 1;
115 return req;
116 }
117 }
118 return NULL;
119 }
120
121 static struct vscsi_req *vscsi_find_req(VSCSIState *s, uint64_t srp_tag)
122 {
123 vscsi_req *req;
124 int i;
125
126 for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
127 req = &s->reqs[i];
128 if (req->iu.srp.cmd.tag == srp_tag) {
129 return req;
130 }
131 }
132 return NULL;
133 }
134
135 static void vscsi_put_req(vscsi_req *req)
136 {
137 if (req->sreq != NULL) {
138 scsi_req_unref(req->sreq);
139 }
140 req->sreq = NULL;
141 req->active = 0;
142 }
143
144 static SCSIDevice *vscsi_device_find(SCSIBus *bus, uint64_t srp_lun, int *lun)
145 {
146 int channel = 0, id = 0;
147
148 retry:
149 switch (srp_lun >> 62) {
150 case 0:
151 if ((srp_lun >> 56) != 0) {
152 channel = (srp_lun >> 56) & 0x3f;
153 id = (srp_lun >> 48) & 0xff;
154 srp_lun <<= 16;
155 goto retry;
156 }
157 *lun = (srp_lun >> 48) & 0xff;
158 break;
159
160 case 1:
161 *lun = (srp_lun >> 48) & 0x3fff;
162 break;
163 case 2:
164 channel = (srp_lun >> 53) & 0x7;
165 id = (srp_lun >> 56) & 0x3f;
166 *lun = (srp_lun >> 48) & 0x1f;
167 break;
168 case 3:
169 *lun = -1;
170 return NULL;
171 default:
172 abort();
173 }
174
175 return scsi_device_find(bus, channel, id, *lun);
176 }
177
178 static int vscsi_send_iu(VSCSIState *s, vscsi_req *req,
179 uint64_t length, uint8_t format)
180 {
181 long rc, rc1;
182
183 /* First copy the SRP */
184 rc = spapr_vio_dma_write(&s->vdev, req->crq.s.IU_data_ptr,
185 &req->iu, length);
186 if (rc) {
187 fprintf(stderr, "vscsi_send_iu: DMA write failure !\n");
188 }
189
190 req->crq.s.valid = 0x80;
191 req->crq.s.format = format;
192 req->crq.s.reserved = 0x00;
193 req->crq.s.timeout = cpu_to_be16(0x0000);
194 req->crq.s.IU_length = cpu_to_be16(length);
195 req->crq.s.IU_data_ptr = req->iu.srp.rsp.tag; /* right byte order */
196
197 if (rc == 0) {
198 req->crq.s.status = VIOSRP_OK;
199 } else {
200 req->crq.s.status = VIOSRP_ADAPTER_FAIL;
201 }
202
203 rc1 = spapr_vio_send_crq(&s->vdev, req->crq.raw);
204 if (rc1) {
205 fprintf(stderr, "vscsi_send_iu: Error sending response\n");
206 return rc1;
207 }
208
209 return rc;
210 }
211
212 static void vscsi_makeup_sense(VSCSIState *s, vscsi_req *req,
213 uint8_t key, uint8_t asc, uint8_t ascq)
214 {
215 req->senselen = SRP_RSP_SENSE_DATA_LEN;
216
217 /* Valid bit and 'current errors' */
218 req->sense[0] = (0x1 << 7 | 0x70);
219 /* Sense key */
220 req->sense[2] = key;
221 /* Additional sense length */
222 req->sense[7] = 0xa; /* 10 bytes */
223 /* Additional sense code */
224 req->sense[12] = asc;
225 req->sense[13] = ascq;
226 }
227
228 static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req,
229 uint8_t status, int32_t res_in, int32_t res_out)
230 {
231 union viosrp_iu *iu = &req->iu;
232 uint64_t tag = iu->srp.rsp.tag;
233 int total_len = sizeof(iu->srp.rsp);
234 uint8_t sol_not = iu->srp.cmd.sol_not;
235
236 DPRINTF("VSCSI: Sending resp status: 0x%x, "
237 "res_in: %d, res_out: %d\n", status, res_in, res_out);
238
239 memset(iu, 0, sizeof(struct srp_rsp));
240 iu->srp.rsp.opcode = SRP_RSP;
241 iu->srp.rsp.req_lim_delta = cpu_to_be32(1);
242 iu->srp.rsp.tag = tag;
243
244 /* Handle residuals */
245 if (res_in < 0) {
246 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIUNDER;
247 res_in = -res_in;
248 } else if (res_in) {
249 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIOVER;
250 }
251 if (res_out < 0) {
252 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOUNDER;
253 res_out = -res_out;
254 } else if (res_out) {
255 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOOVER;
256 }
257 iu->srp.rsp.data_in_res_cnt = cpu_to_be32(res_in);
258 iu->srp.rsp.data_out_res_cnt = cpu_to_be32(res_out);
259
260 /* We don't do response data */
261 /* iu->srp.rsp.flags &= ~SRP_RSP_FLAG_RSPVALID; */
262 iu->srp.rsp.resp_data_len = cpu_to_be32(0);
263
264 /* Handle success vs. failure */
265 iu->srp.rsp.status = status;
266 if (status) {
267 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2;
268 if (req->senselen) {
269 req->iu.srp.rsp.flags |= SRP_RSP_FLAG_SNSVALID;
270 req->iu.srp.rsp.sense_data_len = cpu_to_be32(req->senselen);
271 memcpy(req->iu.srp.rsp.data, req->sense, req->senselen);
272 total_len += req->senselen;
273 }
274 } else {
275 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1;
276 }
277
278 vscsi_send_iu(s, req, total_len, VIOSRP_SRP_FORMAT);
279 return 0;
280 }
281
282 static inline struct srp_direct_buf vscsi_swap_desc(struct srp_direct_buf desc)
283 {
284 desc.va = be64_to_cpu(desc.va);
285 desc.len = be32_to_cpu(desc.len);
286 return desc;
287 }
288
289 static int vscsi_fetch_desc(VSCSIState *s, struct vscsi_req *req,
290 unsigned n, unsigned buf_offset,
291 struct srp_direct_buf *ret)
292 {
293 struct srp_cmd *cmd = &req->iu.srp.cmd;
294
295 switch (req->dma_fmt) {
296 case SRP_NO_DATA_DESC: {
297 DPRINTF("VSCSI: no data descriptor\n");
298 return 0;
299 }
300 case SRP_DATA_DESC_DIRECT: {
301 memcpy(ret, cmd->add_data + req->cdb_offset, sizeof(*ret));
302 assert(req->cur_desc_num == 0);
303 DPRINTF("VSCSI: direct segment\n");
304 break;
305 }
306 case SRP_DATA_DESC_INDIRECT: {
307 struct srp_indirect_buf *tmp = (struct srp_indirect_buf *)
308 (cmd->add_data + req->cdb_offset);
309 if (n < req->local_desc) {
310 *ret = tmp->desc_list[n];
311 DPRINTF("VSCSI: indirect segment local tag=0x%x desc#%d/%d\n",
312 req->qtag, n, req->local_desc);
313
314 } else if (n < req->total_desc) {
315 int rc;
316 struct srp_direct_buf tbl_desc = vscsi_swap_desc(tmp->table_desc);
317 unsigned desc_offset = n * sizeof(struct srp_direct_buf);
318
319 if (desc_offset >= tbl_desc.len) {
320 DPRINTF("VSCSI: #%d is ouf of range (%d bytes)\n",
321 n, desc_offset);
322 return -1;
323 }
324 rc = spapr_vio_dma_read(&s->vdev, tbl_desc.va + desc_offset,
325 ret, sizeof(struct srp_direct_buf));
326 if (rc) {
327 DPRINTF("VSCSI: spapr_vio_dma_read -> %d reading ext_desc\n",
328 rc);
329 return -1;
330 }
331 DPRINTF("VSCSI: indirect segment ext. tag=0x%x desc#%d/%d { va=%"PRIx64" len=%x }\n",
332 req->qtag, n, req->total_desc, tbl_desc.va, tbl_desc.len);
333 } else {
334 DPRINTF("VSCSI: Out of descriptors !\n");
335 return 0;
336 }
337 break;
338 }
339 default:
340 fprintf(stderr, "VSCSI: Unknown format %x\n", req->dma_fmt);
341 return -1;
342 }
343
344 *ret = vscsi_swap_desc(*ret);
345 if (buf_offset > ret->len) {
346 DPRINTF(" offset=%x is out of a descriptor #%d boundary=%x\n",
347 buf_offset, req->cur_desc_num, ret->len);
348 return -1;
349 }
350 ret->va += buf_offset;
351 ret->len -= buf_offset;
352
353 DPRINTF(" cur=%d offs=%x ret { va=%"PRIx64" len=%x }\n",
354 req->cur_desc_num, req->cur_desc_offset, ret->va, ret->len);
355
356 return ret->len ? 1 : 0;
357 }
358
359 static int vscsi_srp_direct_data(VSCSIState *s, vscsi_req *req,
360 uint8_t *buf, uint32_t len)
361 {
362 struct srp_direct_buf md;
363 uint32_t llen;
364 int rc = 0;
365
366 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md);
367 if (rc < 0) {
368 return -1;
369 } else if (rc == 0) {
370 return 0;
371 }
372
373 llen = MIN(len, md.len);
374 if (llen) {
375 if (req->writing) { /* writing = to device = reading from memory */
376 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen);
377 } else {
378 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen);
379 }
380 }
381
382 if (rc) {
383 return -1;
384 }
385 req->cur_desc_offset += llen;
386
387 return llen;
388 }
389
390 static int vscsi_srp_indirect_data(VSCSIState *s, vscsi_req *req,
391 uint8_t *buf, uint32_t len)
392 {
393 struct srp_direct_buf md;
394 int rc = 0;
395 uint32_t llen, total = 0;
396
397 DPRINTF("VSCSI: indirect segment 0x%x bytes\n", len);
398
399 /* While we have data ... */
400 while (len) {
401 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md);
402 if (rc < 0) {
403 return -1;
404 } else if (rc == 0) {
405 break;
406 }
407
408 /* Perform transfer */
409 llen = MIN(len, md.len);
410 if (req->writing) { /* writing = to device = reading from memory */
411 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen);
412 } else {
413 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen);
414 }
415 if (rc) {
416 DPRINTF("VSCSI: spapr_vio_dma_r/w(%d) -> %d\n", req->writing, rc);
417 break;
418 }
419 DPRINTF("VSCSI: data: %02x %02x %02x %02x...\n",
420 buf[0], buf[1], buf[2], buf[3]);
421
422 len -= llen;
423 buf += llen;
424
425 total += llen;
426
427 /* Update current position in the current descriptor */
428 req->cur_desc_offset += llen;
429 if (md.len == llen) {
430 /* Go to the next descriptor if the current one finished */
431 ++req->cur_desc_num;
432 req->cur_desc_offset = 0;
433 }
434 }
435
436 return rc ? -1 : total;
437 }
438
439 static int vscsi_srp_transfer_data(VSCSIState *s, vscsi_req *req,
440 int writing, uint8_t *buf, uint32_t len)
441 {
442 int err = 0;
443
444 switch (req->dma_fmt) {
445 case SRP_NO_DATA_DESC:
446 DPRINTF("VSCSI: no data desc transfer, skipping 0x%x bytes\n", len);
447 break;
448 case SRP_DATA_DESC_DIRECT:
449 err = vscsi_srp_direct_data(s, req, buf, len);
450 break;
451 case SRP_DATA_DESC_INDIRECT:
452 err = vscsi_srp_indirect_data(s, req, buf, len);
453 break;
454 }
455 return err;
456 }
457
458 /* Bits from linux srp */
459 static int data_out_desc_size(struct srp_cmd *cmd)
460 {
461 int size = 0;
462 uint8_t fmt = cmd->buf_fmt >> 4;
463
464 switch (fmt) {
465 case SRP_NO_DATA_DESC:
466 break;
467 case SRP_DATA_DESC_DIRECT:
468 size = sizeof(struct srp_direct_buf);
469 break;
470 case SRP_DATA_DESC_INDIRECT:
471 size = sizeof(struct srp_indirect_buf) +
472 sizeof(struct srp_direct_buf)*cmd->data_out_desc_cnt;
473 break;
474 default:
475 break;
476 }
477 return size;
478 }
479
480 static int vscsi_preprocess_desc(vscsi_req *req)
481 {
482 struct srp_cmd *cmd = &req->iu.srp.cmd;
483
484 req->cdb_offset = cmd->add_cdb_len & ~3;
485
486 if (req->writing) {
487 req->dma_fmt = cmd->buf_fmt >> 4;
488 } else {
489 req->cdb_offset += data_out_desc_size(cmd);
490 req->dma_fmt = cmd->buf_fmt & ((1U << 4) - 1);
491 }
492
493 switch (req->dma_fmt) {
494 case SRP_NO_DATA_DESC:
495 break;
496 case SRP_DATA_DESC_DIRECT:
497 req->total_desc = req->local_desc = 1;
498 break;
499 case SRP_DATA_DESC_INDIRECT: {
500 struct srp_indirect_buf *ind_tmp = (struct srp_indirect_buf *)
501 (cmd->add_data + req->cdb_offset);
502
503 req->total_desc = be32_to_cpu(ind_tmp->table_desc.len) /
504 sizeof(struct srp_direct_buf);
505 req->local_desc = req->writing ? cmd->data_out_desc_cnt :
506 cmd->data_in_desc_cnt;
507 break;
508 }
509 default:
510 fprintf(stderr,
511 "vscsi_preprocess_desc: Unknown format %x\n", req->dma_fmt);
512 return -1;
513 }
514
515 return 0;
516 }
517
518 /* Callback to indicate that the SCSI layer has completed a transfer. */
519 static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t len)
520 {
521 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent);
522 vscsi_req *req = sreq->hba_private;
523 uint8_t *buf;
524 int rc = 0;
525
526 DPRINTF("VSCSI: SCSI xfer complete tag=0x%x len=0x%x, req=%p\n",
527 sreq->tag, len, req);
528 if (req == NULL) {
529 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag);
530 return;
531 }
532
533 if (len) {
534 buf = scsi_req_get_buf(sreq);
535 rc = vscsi_srp_transfer_data(s, req, req->writing, buf, len);
536 }
537 if (rc < 0) {
538 fprintf(stderr, "VSCSI: RDMA error rc=%d!\n", rc);
539 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
540 scsi_req_abort(req->sreq, CHECK_CONDITION);
541 return;
542 }
543
544 /* Start next chunk */
545 req->data_len -= rc;
546 scsi_req_continue(sreq);
547 }
548
549 /* Callback to indicate that the SCSI layer has completed a transfer. */
550 static void vscsi_command_complete(SCSIRequest *sreq, uint32_t status, size_t resid)
551 {
552 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent);
553 vscsi_req *req = sreq->hba_private;
554 int32_t res_in = 0, res_out = 0;
555
556 DPRINTF("VSCSI: SCSI cmd complete, tag=0x%x status=0x%x, req=%p\n",
557 sreq->tag, status, req);
558 if (req == NULL) {
559 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag);
560 return;
561 }
562
563 if (status == CHECK_CONDITION) {
564 req->senselen = scsi_req_get_sense(req->sreq, req->sense,
565 sizeof(req->sense));
566 DPRINTF("VSCSI: Sense data, %d bytes:\n", req->senselen);
567 DPRINTF(" %02x %02x %02x %02x %02x %02x %02x %02x\n",
568 req->sense[0], req->sense[1], req->sense[2], req->sense[3],
569 req->sense[4], req->sense[5], req->sense[6], req->sense[7]);
570 DPRINTF(" %02x %02x %02x %02x %02x %02x %02x %02x\n",
571 req->sense[8], req->sense[9], req->sense[10], req->sense[11],
572 req->sense[12], req->sense[13], req->sense[14], req->sense[15]);
573 }
574
575 DPRINTF("VSCSI: Command complete err=%d\n", status);
576 if (status == 0) {
577 /* We handle overflows, not underflows for normal commands,
578 * but hopefully nobody cares
579 */
580 if (req->writing) {
581 res_out = req->data_len;
582 } else {
583 res_in = req->data_len;
584 }
585 }
586 vscsi_send_rsp(s, req, status, res_in, res_out);
587 vscsi_put_req(req);
588 }
589
590 static void vscsi_request_cancelled(SCSIRequest *sreq)
591 {
592 vscsi_req *req = sreq->hba_private;
593
594 vscsi_put_req(req);
595 }
596
597 static const VMStateDescription vmstate_spapr_vscsi_req = {
598 .name = "spapr_vscsi_req",
599 .version_id = 1,
600 .minimum_version_id = 1,
601 .minimum_version_id_old = 1,
602 .fields = (VMStateField []) {
603 VMSTATE_BUFFER(crq.raw, vscsi_req),
604 VMSTATE_BUFFER(iu.srp.reserved, vscsi_req),
605 VMSTATE_UINT32(qtag, vscsi_req),
606 VMSTATE_BOOL(active, vscsi_req),
607 VMSTATE_UINT32(data_len, vscsi_req),
608 VMSTATE_BOOL(writing, vscsi_req),
609 VMSTATE_UINT32(senselen, vscsi_req),
610 VMSTATE_BUFFER(sense, vscsi_req),
611 VMSTATE_UINT8(dma_fmt, vscsi_req),
612 VMSTATE_UINT16(local_desc, vscsi_req),
613 VMSTATE_UINT16(total_desc, vscsi_req),
614 VMSTATE_UINT16(cdb_offset, vscsi_req),
615 /*Restart SCSI request from the beginning for now */
616 /*VMSTATE_UINT16(cur_desc_num, vscsi_req),
617 VMSTATE_UINT16(cur_desc_offset, vscsi_req),*/
618 VMSTATE_END_OF_LIST()
619 },
620 };
621
622 static void vscsi_save_request(QEMUFile *f, SCSIRequest *sreq)
623 {
624 vscsi_req *req = sreq->hba_private;
625 assert(req->active);
626
627 vmstate_save_state(f, &vmstate_spapr_vscsi_req, req);
628
629 DPRINTF("VSCSI: saving tag=%u, current desc#%d, offset=%x\n",
630 req->qtag, req->cur_desc_num, req->cur_desc_offset);
631 }
632
633 static void *vscsi_load_request(QEMUFile *f, SCSIRequest *sreq)
634 {
635 SCSIBus *bus = sreq->bus;
636 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(bus->qbus.parent);
637 vscsi_req *req;
638 int rc;
639
640 assert(sreq->tag < VSCSI_REQ_LIMIT);
641 req = &s->reqs[sreq->tag];
642 assert(!req->active);
643
644 memset(req, 0, sizeof(*req));
645 rc = vmstate_load_state(f, &vmstate_spapr_vscsi_req, req, 1);
646 if (rc) {
647 fprintf(stderr, "VSCSI: failed loading request tag#%u\n", sreq->tag);
648 return NULL;
649 }
650 assert(req->active);
651
652 req->sreq = scsi_req_ref(sreq);
653
654 DPRINTF("VSCSI: restoring tag=%u, current desc#%d, offset=%x\n",
655 req->qtag, req->cur_desc_num, req->cur_desc_offset);
656
657 return req;
658 }
659
660 static void vscsi_process_login(VSCSIState *s, vscsi_req *req)
661 {
662 union viosrp_iu *iu = &req->iu;
663 struct srp_login_rsp *rsp = &iu->srp.login_rsp;
664 uint64_t tag = iu->srp.rsp.tag;
665
666 DPRINTF("VSCSI: Got login, sendin response !\n");
667
668 /* TODO handle case that requested size is wrong and
669 * buffer format is wrong
670 */
671 memset(iu, 0, sizeof(struct srp_login_rsp));
672 rsp->opcode = SRP_LOGIN_RSP;
673 /* Don't advertise quite as many request as we support to
674 * keep room for management stuff etc...
675 */
676 rsp->req_lim_delta = cpu_to_be32(VSCSI_REQ_LIMIT-2);
677 rsp->tag = tag;
678 rsp->max_it_iu_len = cpu_to_be32(sizeof(union srp_iu));
679 rsp->max_ti_iu_len = cpu_to_be32(sizeof(union srp_iu));
680 /* direct and indirect */
681 rsp->buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT);
682
683 vscsi_send_iu(s, req, sizeof(*rsp), VIOSRP_SRP_FORMAT);
684 }
685
686 static void vscsi_inquiry_no_target(VSCSIState *s, vscsi_req *req)
687 {
688 uint8_t *cdb = req->iu.srp.cmd.cdb;
689 uint8_t resp_data[36];
690 int rc, len, alen;
691
692 /* We dont do EVPD. Also check that page_code is 0 */
693 if ((cdb[1] & 0x01) || cdb[2] != 0) {
694 /* Send INVALID FIELD IN CDB */
695 vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0);
696 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
697 return;
698 }
699 alen = cdb[3];
700 alen = (alen << 8) | cdb[4];
701 len = MIN(alen, 36);
702
703 /* Fake up inquiry using PQ=3 */
704 memset(resp_data, 0, 36);
705 resp_data[0] = 0x7f; /* Not capable of supporting a device here */
706 resp_data[2] = 0x06; /* SPS-4 */
707 resp_data[3] = 0x02; /* Resp data format */
708 resp_data[4] = 36 - 5; /* Additional length */
709 resp_data[7] = 0x10; /* Sync transfers */
710 memcpy(&resp_data[16], "QEMU EMPTY ", 16);
711 memcpy(&resp_data[8], "QEMU ", 8);
712
713 req->writing = 0;
714 vscsi_preprocess_desc(req);
715 rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len);
716 if (rc < 0) {
717 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
718 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
719 } else {
720 vscsi_send_rsp(s, req, 0, 36 - rc, 0);
721 }
722 }
723
724 static void vscsi_report_luns(VSCSIState *s, vscsi_req *req)
725 {
726 BusChild *kid;
727 int i, len, n, rc;
728 uint8_t *resp_data;
729 bool found_lun0;
730
731 n = 0;
732 found_lun0 = false;
733 QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
734 SCSIDevice *dev = SCSI_DEVICE(kid->child);
735
736 n += 8;
737 if (dev->channel == 0 && dev->id == 0 && dev->lun == 0) {
738 found_lun0 = true;
739 }
740 }
741 if (!found_lun0) {
742 n += 8;
743 }
744 len = n+8;
745
746 resp_data = g_malloc0(len);
747 memset(resp_data, 0, len);
748 stl_be_p(resp_data, n);
749 i = found_lun0 ? 8 : 16;
750 QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
751 DeviceState *qdev = kid->child;
752 SCSIDevice *dev = SCSI_DEVICE(qdev);
753
754 if (dev->id == 0 && dev->channel == 0) {
755 resp_data[i] = 0; /* Use simple LUN for 0 (SAM5 4.7.7.1) */
756 } else {
757 resp_data[i] = (2 << 6); /* Otherwise LUN addressing (4.7.7.4) */
758 }
759 resp_data[i] |= dev->id;
760 resp_data[i+1] = (dev->channel << 5);
761 resp_data[i+1] |= dev->lun;
762 i += 8;
763 }
764
765 vscsi_preprocess_desc(req);
766 rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len);
767 g_free(resp_data);
768 if (rc < 0) {
769 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
770 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
771 } else {
772 vscsi_send_rsp(s, req, 0, len - rc, 0);
773 }
774 }
775
776 static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req)
777 {
778 union srp_iu *srp = &req->iu.srp;
779 SCSIDevice *sdev;
780 int n, lun;
781
782 if ((srp->cmd.lun == 0 || be64_to_cpu(srp->cmd.lun) == SRP_REPORT_LUNS_WLUN)
783 && srp->cmd.cdb[0] == REPORT_LUNS) {
784 vscsi_report_luns(s, req);
785 return 0;
786 }
787
788 sdev = vscsi_device_find(&s->bus, be64_to_cpu(srp->cmd.lun), &lun);
789 if (!sdev) {
790 DPRINTF("VSCSI: Command for lun %08" PRIx64 " with no drive\n",
791 be64_to_cpu(srp->cmd.lun));
792 if (srp->cmd.cdb[0] == INQUIRY) {
793 vscsi_inquiry_no_target(s, req);
794 } else {
795 vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0x00);
796 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
797 } return 1;
798 }
799
800 req->sreq = scsi_req_new(sdev, req->qtag, lun, srp->cmd.cdb, req);
801 n = scsi_req_enqueue(req->sreq);
802
803 DPRINTF("VSCSI: Queued command tag 0x%x CMD 0x%x LUN %d ret: %d\n",
804 req->qtag, srp->cmd.cdb[0], lun, n);
805
806 if (n) {
807 /* Transfer direction must be set before preprocessing the
808 * descriptors
809 */
810 req->writing = (n < 1);
811
812 /* Preprocess RDMA descriptors */
813 vscsi_preprocess_desc(req);
814
815 /* Get transfer direction and initiate transfer */
816 if (n > 0) {
817 req->data_len = n;
818 } else if (n < 0) {
819 req->data_len = -n;
820 }
821 scsi_req_continue(req->sreq);
822 }
823 /* Don't touch req here, it may have been recycled already */
824
825 return 0;
826 }
827
828 static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
829 {
830 union viosrp_iu *iu = &req->iu;
831 vscsi_req *tmpreq;
832 int i, lun = 0, resp = SRP_TSK_MGMT_COMPLETE;
833 SCSIDevice *d;
834 uint64_t tag = iu->srp.rsp.tag;
835 uint8_t sol_not = iu->srp.cmd.sol_not;
836
837 fprintf(stderr, "vscsi_process_tsk_mgmt %02x\n",
838 iu->srp.tsk_mgmt.tsk_mgmt_func);
839
840 d = vscsi_device_find(&s->bus, be64_to_cpu(req->iu.srp.tsk_mgmt.lun), &lun);
841 if (!d) {
842 resp = SRP_TSK_MGMT_FIELDS_INVALID;
843 } else {
844 switch (iu->srp.tsk_mgmt.tsk_mgmt_func) {
845 case SRP_TSK_ABORT_TASK:
846 if (d->lun != lun) {
847 resp = SRP_TSK_MGMT_FIELDS_INVALID;
848 break;
849 }
850
851 tmpreq = vscsi_find_req(s, req->iu.srp.tsk_mgmt.task_tag);
852 if (tmpreq && tmpreq->sreq) {
853 assert(tmpreq->sreq->hba_private);
854 scsi_req_cancel(tmpreq->sreq);
855 }
856 break;
857
858 case SRP_TSK_LUN_RESET:
859 if (d->lun != lun) {
860 resp = SRP_TSK_MGMT_FIELDS_INVALID;
861 break;
862 }
863
864 qdev_reset_all(&d->qdev);
865 break;
866
867 case SRP_TSK_ABORT_TASK_SET:
868 case SRP_TSK_CLEAR_TASK_SET:
869 if (d->lun != lun) {
870 resp = SRP_TSK_MGMT_FIELDS_INVALID;
871 break;
872 }
873
874 for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
875 tmpreq = &s->reqs[i];
876 if (tmpreq->iu.srp.cmd.lun != req->iu.srp.tsk_mgmt.lun) {
877 continue;
878 }
879 if (!tmpreq->active || !tmpreq->sreq) {
880 continue;
881 }
882 assert(tmpreq->sreq->hba_private);
883 scsi_req_cancel(tmpreq->sreq);
884 }
885 break;
886
887 case SRP_TSK_CLEAR_ACA:
888 resp = SRP_TSK_MGMT_NOT_SUPPORTED;
889 break;
890
891 default:
892 resp = SRP_TSK_MGMT_FIELDS_INVALID;
893 break;
894 }
895 }
896
897 /* Compose the response here as */
898 memset(iu, 0, sizeof(struct srp_rsp) + 4);
899 iu->srp.rsp.opcode = SRP_RSP;
900 iu->srp.rsp.req_lim_delta = cpu_to_be32(1);
901 iu->srp.rsp.tag = tag;
902 iu->srp.rsp.flags |= SRP_RSP_FLAG_RSPVALID;
903 iu->srp.rsp.resp_data_len = cpu_to_be32(4);
904 if (resp) {
905 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2;
906 } else {
907 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1;
908 }
909
910 iu->srp.rsp.status = GOOD;
911 iu->srp.rsp.data[3] = resp;
912
913 vscsi_send_iu(s, req, sizeof(iu->srp.rsp) + 4, VIOSRP_SRP_FORMAT);
914
915 return 1;
916 }
917
918 static int vscsi_handle_srp_req(VSCSIState *s, vscsi_req *req)
919 {
920 union srp_iu *srp = &req->iu.srp;
921 int done = 1;
922 uint8_t opcode = srp->rsp.opcode;
923
924 switch (opcode) {
925 case SRP_LOGIN_REQ:
926 vscsi_process_login(s, req);
927 break;
928 case SRP_TSK_MGMT:
929 done = vscsi_process_tsk_mgmt(s, req);
930 break;
931 case SRP_CMD:
932 done = vscsi_queue_cmd(s, req);
933 break;
934 case SRP_LOGIN_RSP:
935 case SRP_I_LOGOUT:
936 case SRP_T_LOGOUT:
937 case SRP_RSP:
938 case SRP_CRED_REQ:
939 case SRP_CRED_RSP:
940 case SRP_AER_REQ:
941 case SRP_AER_RSP:
942 fprintf(stderr, "VSCSI: Unsupported opcode %02x\n", opcode);
943 break;
944 default:
945 fprintf(stderr, "VSCSI: Unknown type %02x\n", opcode);
946 }
947
948 return done;
949 }
950
951 static int vscsi_send_adapter_info(VSCSIState *s, vscsi_req *req)
952 {
953 struct viosrp_adapter_info *sinfo;
954 struct mad_adapter_info_data info;
955 int rc;
956
957 sinfo = &req->iu.mad.adapter_info;
958
959 #if 0 /* What for ? */
960 rc = spapr_vio_dma_read(&s->vdev, be64_to_cpu(sinfo->buffer),
961 &info, be16_to_cpu(sinfo->common.length));
962 if (rc) {
963 fprintf(stderr, "vscsi_send_adapter_info: DMA read failure !\n");
964 }
965 #endif
966 memset(&info, 0, sizeof(info));
967 strcpy(info.srp_version, SRP_VERSION);
968 memcpy(info.partition_name, "qemu", sizeof("qemu"));
969 info.partition_number = cpu_to_be32(0);
970 info.mad_version = cpu_to_be32(1);
971 info.os_type = cpu_to_be32(2);
972 info.port_max_txu[0] = cpu_to_be32(VSCSI_MAX_SECTORS << 9);
973
974 rc = spapr_vio_dma_write(&s->vdev, be64_to_cpu(sinfo->buffer),
975 &info, be16_to_cpu(sinfo->common.length));
976 if (rc) {
977 fprintf(stderr, "vscsi_send_adapter_info: DMA write failure !\n");
978 }
979
980 sinfo->common.status = rc ? cpu_to_be32(1) : 0;
981
982 return vscsi_send_iu(s, req, sizeof(*sinfo), VIOSRP_MAD_FORMAT);
983 }
984
985 static int vscsi_send_capabilities(VSCSIState *s, vscsi_req *req)
986 {
987 struct viosrp_capabilities *vcap;
988 struct capabilities cap = { };
989 uint16_t len, req_len;
990 uint64_t buffer;
991 int rc;
992
993 vcap = &req->iu.mad.capabilities;
994 req_len = len = be16_to_cpu(vcap->common.length);
995 buffer = be64_to_cpu(vcap->buffer);
996 if (len > sizeof(cap)) {
997 fprintf(stderr, "vscsi_send_capabilities: capabilities size mismatch !\n");
998
999 /*
1000 * Just read and populate the structure that is known.
1001 * Zero rest of the structure.
1002 */
1003 len = sizeof(cap);
1004 }
1005 rc = spapr_vio_dma_read(&s->vdev, buffer, &cap, len);
1006 if (rc) {
1007 fprintf(stderr, "vscsi_send_capabilities: DMA read failure !\n");
1008 }
1009
1010 /*
1011 * Current implementation does not suppport any migration or
1012 * reservation capabilities. Construct the response telling the
1013 * guest not to use them.
1014 */
1015 cap.flags = 0;
1016 cap.migration.ecl = 0;
1017 cap.reserve.type = 0;
1018 cap.migration.common.server_support = 0;
1019 cap.reserve.common.server_support = 0;
1020
1021 rc = spapr_vio_dma_write(&s->vdev, buffer, &cap, len);
1022 if (rc) {
1023 fprintf(stderr, "vscsi_send_capabilities: DMA write failure !\n");
1024 }
1025 if (req_len > len) {
1026 /*
1027 * Being paranoid and lets not worry about the error code
1028 * here. Actual write of the cap is done above.
1029 */
1030 spapr_vio_dma_set(&s->vdev, (buffer + len), 0, (req_len - len));
1031 }
1032 vcap->common.status = rc ? cpu_to_be32(1) : 0;
1033 return vscsi_send_iu(s, req, sizeof(*vcap), VIOSRP_MAD_FORMAT);
1034 }
1035
1036 static int vscsi_handle_mad_req(VSCSIState *s, vscsi_req *req)
1037 {
1038 union mad_iu *mad = &req->iu.mad;
1039 bool request_handled = false;
1040 uint64_t retlen = 0;
1041
1042 switch (be32_to_cpu(mad->empty_iu.common.type)) {
1043 case VIOSRP_EMPTY_IU_TYPE:
1044 fprintf(stderr, "Unsupported EMPTY MAD IU\n");
1045 retlen = sizeof(mad->empty_iu);
1046 break;
1047 case VIOSRP_ERROR_LOG_TYPE:
1048 fprintf(stderr, "Unsupported ERROR LOG MAD IU\n");
1049 retlen = sizeof(mad->error_log);
1050 break;
1051 case VIOSRP_ADAPTER_INFO_TYPE:
1052 vscsi_send_adapter_info(s, req);
1053 request_handled = true;
1054 break;
1055 case VIOSRP_HOST_CONFIG_TYPE:
1056 retlen = sizeof(mad->host_config);
1057 break;
1058 case VIOSRP_CAPABILITIES_TYPE:
1059 vscsi_send_capabilities(s, req);
1060 request_handled = true;
1061 break;
1062 default:
1063 fprintf(stderr, "VSCSI: Unknown MAD type %02x\n",
1064 be32_to_cpu(mad->empty_iu.common.type));
1065 /*
1066 * PAPR+ says that "The length field is set to the length
1067 * of the data structure(s) used in the command".
1068 * As we did not recognize the request type, put zero there.
1069 */
1070 retlen = 0;
1071 }
1072
1073 if (!request_handled) {
1074 mad->empty_iu.common.status = cpu_to_be16(VIOSRP_MAD_NOT_SUPPORTED);
1075 vscsi_send_iu(s, req, retlen, VIOSRP_MAD_FORMAT);
1076 }
1077
1078 return 1;
1079 }
1080
1081 static void vscsi_got_payload(VSCSIState *s, vscsi_crq *crq)
1082 {
1083 vscsi_req *req;
1084 int done;
1085
1086 req = vscsi_get_req(s);
1087 if (req == NULL) {
1088 fprintf(stderr, "VSCSI: Failed to get a request !\n");
1089 return;
1090 }
1091
1092 /* We only support a limited number of descriptors, we know
1093 * the ibmvscsi driver uses up to 10 max, so it should fit
1094 * in our 256 bytes IUs. If not we'll have to increase the size
1095 * of the structure.
1096 */
1097 if (crq->s.IU_length > sizeof(union viosrp_iu)) {
1098 fprintf(stderr, "VSCSI: SRP IU too long (%d bytes) !\n",
1099 crq->s.IU_length);
1100 vscsi_put_req(req);
1101 return;
1102 }
1103
1104 /* XXX Handle failure differently ? */
1105 if (spapr_vio_dma_read(&s->vdev, crq->s.IU_data_ptr, &req->iu,
1106 crq->s.IU_length)) {
1107 fprintf(stderr, "vscsi_got_payload: DMA read failure !\n");
1108 vscsi_put_req(req);
1109 return;
1110 }
1111 memcpy(&req->crq, crq, sizeof(vscsi_crq));
1112
1113 if (crq->s.format == VIOSRP_MAD_FORMAT) {
1114 done = vscsi_handle_mad_req(s, req);
1115 } else {
1116 done = vscsi_handle_srp_req(s, req);
1117 }
1118
1119 if (done) {
1120 vscsi_put_req(req);
1121 }
1122 }
1123
1124
1125 static int vscsi_do_crq(struct VIOsPAPRDevice *dev, uint8_t *crq_data)
1126 {
1127 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev);
1128 vscsi_crq crq;
1129
1130 memcpy(crq.raw, crq_data, 16);
1131 crq.s.timeout = be16_to_cpu(crq.s.timeout);
1132 crq.s.IU_length = be16_to_cpu(crq.s.IU_length);
1133 crq.s.IU_data_ptr = be64_to_cpu(crq.s.IU_data_ptr);
1134
1135 DPRINTF("VSCSI: do_crq %02x %02x ...\n", crq.raw[0], crq.raw[1]);
1136
1137 switch (crq.s.valid) {
1138 case 0xc0: /* Init command/response */
1139
1140 /* Respond to initialization request */
1141 if (crq.s.format == 0x01) {
1142 memset(crq.raw, 0, 16);
1143 crq.s.valid = 0xc0;
1144 crq.s.format = 0x02;
1145 spapr_vio_send_crq(dev, crq.raw);
1146 }
1147
1148 /* Note that in hotplug cases, we might get a 0x02
1149 * as a result of us emitting the init request
1150 */
1151
1152 break;
1153 case 0xff: /* Link event */
1154
1155 /* Not handled for now */
1156
1157 break;
1158 case 0x80: /* Payloads */
1159 switch (crq.s.format) {
1160 case VIOSRP_SRP_FORMAT: /* AKA VSCSI request */
1161 case VIOSRP_MAD_FORMAT: /* AKA VSCSI response */
1162 vscsi_got_payload(s, &crq);
1163 break;
1164 case VIOSRP_OS400_FORMAT:
1165 case VIOSRP_AIX_FORMAT:
1166 case VIOSRP_LINUX_FORMAT:
1167 case VIOSRP_INLINE_FORMAT:
1168 fprintf(stderr, "vscsi_do_srq: Unsupported payload format %02x\n",
1169 crq.s.format);
1170 break;
1171 default:
1172 fprintf(stderr, "vscsi_do_srq: Unknown payload format %02x\n",
1173 crq.s.format);
1174 }
1175 break;
1176 default:
1177 fprintf(stderr, "vscsi_do_crq: unknown CRQ %02x %02x ...\n",
1178 crq.raw[0], crq.raw[1]);
1179 };
1180
1181 return 0;
1182 }
1183
1184 static const struct SCSIBusInfo vscsi_scsi_info = {
1185 .tcq = true,
1186 .max_channel = 7, /* logical unit addressing format */
1187 .max_target = 63,
1188 .max_lun = 31,
1189
1190 .transfer_data = vscsi_transfer_data,
1191 .complete = vscsi_command_complete,
1192 .cancel = vscsi_request_cancelled,
1193 .save_request = vscsi_save_request,
1194 .load_request = vscsi_load_request,
1195 };
1196
1197 static void spapr_vscsi_reset(VIOsPAPRDevice *dev)
1198 {
1199 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev);
1200 int i;
1201
1202 memset(s->reqs, 0, sizeof(s->reqs));
1203 for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
1204 s->reqs[i].qtag = i;
1205 }
1206 }
1207
1208 static int spapr_vscsi_init(VIOsPAPRDevice *dev)
1209 {
1210 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev);
1211 Error *err = NULL;
1212
1213 dev->crq.SendFunc = vscsi_do_crq;
1214
1215 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
1216 &vscsi_scsi_info, NULL);
1217 if (!dev->qdev.hotplugged) {
1218 scsi_bus_legacy_handle_cmdline(&s->bus, &err);
1219 if (err != NULL) {
1220 error_free(err);
1221 return -1;
1222 }
1223 }
1224
1225 return 0;
1226 }
1227
1228 void spapr_vscsi_create(VIOsPAPRBus *bus)
1229 {
1230 DeviceState *dev;
1231
1232 dev = qdev_create(&bus->bus, "spapr-vscsi");
1233
1234 qdev_init_nofail(dev);
1235 }
1236
1237 static int spapr_vscsi_devnode(VIOsPAPRDevice *dev, void *fdt, int node_off)
1238 {
1239 int ret;
1240
1241 ret = fdt_setprop_cell(fdt, node_off, "#address-cells", 2);
1242 if (ret < 0) {
1243 return ret;
1244 }
1245
1246 ret = fdt_setprop_cell(fdt, node_off, "#size-cells", 0);
1247 if (ret < 0) {
1248 return ret;
1249 }
1250
1251 return 0;
1252 }
1253
1254 static Property spapr_vscsi_properties[] = {
1255 DEFINE_SPAPR_PROPERTIES(VSCSIState, vdev),
1256 DEFINE_PROP_END_OF_LIST(),
1257 };
1258
1259 static const VMStateDescription vmstate_spapr_vscsi = {
1260 .name = "spapr_vscsi",
1261 .version_id = 1,
1262 .minimum_version_id = 1,
1263 .minimum_version_id_old = 1,
1264 .fields = (VMStateField []) {
1265 VMSTATE_SPAPR_VIO(vdev, VSCSIState),
1266 /* VSCSI state */
1267 /* ???? */
1268
1269 VMSTATE_END_OF_LIST()
1270 },
1271 };
1272
1273 static void spapr_vscsi_class_init(ObjectClass *klass, void *data)
1274 {
1275 DeviceClass *dc = DEVICE_CLASS(klass);
1276 VIOsPAPRDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass);
1277
1278 k->init = spapr_vscsi_init;
1279 k->reset = spapr_vscsi_reset;
1280 k->devnode = spapr_vscsi_devnode;
1281 k->dt_name = "v-scsi";
1282 k->dt_type = "vscsi";
1283 k->dt_compatible = "IBM,v-scsi";
1284 k->signal_mask = 0x00000001;
1285 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1286 dc->props = spapr_vscsi_properties;
1287 k->rtce_window_size = 0x10000000;
1288 dc->vmsd = &vmstate_spapr_vscsi;
1289 }
1290
1291 static const TypeInfo spapr_vscsi_info = {
1292 .name = TYPE_VIO_SPAPR_VSCSI_DEVICE,
1293 .parent = TYPE_VIO_SPAPR_DEVICE,
1294 .instance_size = sizeof(VSCSIState),
1295 .class_init = spapr_vscsi_class_init,
1296 };
1297
1298 static void spapr_vscsi_register_types(void)
1299 {
1300 type_register_static(&spapr_vscsi_info);
1301 }
1302
1303 type_init(spapr_vscsi_register_types)
QEmu