meson: convert hw/vfio
[qemu.git] / hw / scsi / spapr_vscsi.c
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
35 #include "qemu/osdep.h"
36 #include "qemu/module.h"
37 #include "cpu.h"
38 #include "hw/scsi/scsi.h"
39 #include "migration/vmstate.h"
40 #include "scsi/constants.h"
41 #include "srp.h"
42 #include "hw/ppc/spapr.h"
43 #include "hw/ppc/spapr_vio.h"
44 #include "hw/qdev-properties.h"
45 #include "viosrp.h"
46 #include "trace.h"
47
48 #include <libfdt.h>
49
50 /*
51 * Virtual SCSI device
52 */
53
54 /* Random numbers */
55 #define VSCSI_MAX_SECTORS 4096
56 #define VSCSI_REQ_LIMIT 24
57
58 /* Maximum size of a IU payload */
59 #define SRP_MAX_IU_DATA_LEN (SRP_MAX_IU_LEN - sizeof(union srp_iu))
60 #define SRP_RSP_SENSE_DATA_LEN 18
61
62 #define SRP_REPORT_LUNS_WLUN 0xc10100000000000ULL
63
64 typedef union vscsi_crq {
65 struct viosrp_crq s;
66 uint8_t raw[16];
67 } vscsi_crq;
68
69 typedef struct vscsi_req {
70 vscsi_crq crq;
71 uint8_t viosrp_iu_buf[SRP_MAX_IU_LEN];
72
73 /* SCSI request tracking */
74 SCSIRequest *sreq;
75 uint32_t qtag; /* qemu tag != srp tag */
76 bool active;
77 bool writing;
78 bool dma_error;
79 uint32_t data_len;
80 uint32_t senselen;
81 uint8_t sense[SCSI_SENSE_BUF_SIZE];
82
83 /* RDMA related bits */
84 uint8_t dma_fmt;
85 uint16_t local_desc;
86 uint16_t total_desc;
87 uint16_t cdb_offset;
88 uint16_t cur_desc_num;
89 uint16_t cur_desc_offset;
90 } vscsi_req;
91
92 #define TYPE_VIO_SPAPR_VSCSI_DEVICE "spapr-vscsi"
93 #define VIO_SPAPR_VSCSI_DEVICE(obj) \
94 OBJECT_CHECK(VSCSIState, (obj), TYPE_VIO_SPAPR_VSCSI_DEVICE)
95
96 typedef struct {
97 SpaprVioDevice vdev;
98 SCSIBus bus;
99 vscsi_req reqs[VSCSI_REQ_LIMIT];
100 } VSCSIState;
101
102 static union viosrp_iu *req_iu(vscsi_req *req)
103 {
104 return (union viosrp_iu *)req->viosrp_iu_buf;
105 }
106
107 static struct vscsi_req *vscsi_get_req(VSCSIState *s)
108 {
109 vscsi_req *req;
110 int i;
111
112 for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
113 req = &s->reqs[i];
114 if (!req->active) {
115 memset(req, 0, sizeof(*req));
116 req->qtag = i;
117 req->active = 1;
118 return req;
119 }
120 }
121 return NULL;
122 }
123
124 static struct vscsi_req *vscsi_find_req(VSCSIState *s, uint64_t srp_tag)
125 {
126 vscsi_req *req;
127 int i;
128
129 for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
130 req = &s->reqs[i];
131 if (req_iu(req)->srp.cmd.tag == srp_tag) {
132 return req;
133 }
134 }
135 return NULL;
136 }
137
138 static void vscsi_put_req(vscsi_req *req)
139 {
140 if (req->sreq != NULL) {
141 scsi_req_unref(req->sreq);
142 }
143 req->sreq = NULL;
144 req->active = 0;
145 }
146
147 static SCSIDevice *vscsi_device_find(SCSIBus *bus, uint64_t srp_lun, int *lun)
148 {
149 int channel = 0, id = 0;
150
151 retry:
152 switch (srp_lun >> 62) {
153 case 0:
154 if ((srp_lun >> 56) != 0) {
155 channel = (srp_lun >> 56) & 0x3f;
156 id = (srp_lun >> 48) & 0xff;
157 srp_lun <<= 16;
158 goto retry;
159 }
160 *lun = (srp_lun >> 48) & 0xff;
161 break;
162
163 case 1:
164 *lun = (srp_lun >> 48) & 0x3fff;
165 break;
166 case 2:
167 channel = (srp_lun >> 53) & 0x7;
168 id = (srp_lun >> 56) & 0x3f;
169 *lun = (srp_lun >> 48) & 0x1f;
170 break;
171 case 3:
172 *lun = -1;
173 return NULL;
174 default:
175 abort();
176 }
177
178 return scsi_device_find(bus, channel, id, *lun);
179 }
180
181 static int vscsi_send_iu(VSCSIState *s, vscsi_req *req,
182 uint64_t length, uint8_t format)
183 {
184 long rc, rc1;
185
186 assert(length <= SRP_MAX_IU_LEN);
187
188 /* First copy the SRP */
189 rc = spapr_vio_dma_write(&s->vdev, req->crq.s.IU_data_ptr,
190 &req->viosrp_iu_buf, length);
191 if (rc) {
192 fprintf(stderr, "vscsi_send_iu: DMA write failure !\n");
193 }
194
195 req->crq.s.valid = 0x80;
196 req->crq.s.format = format;
197 req->crq.s.reserved = 0x00;
198 req->crq.s.timeout = cpu_to_be16(0x0000);
199 req->crq.s.IU_length = cpu_to_be16(length);
200 req->crq.s.IU_data_ptr = req_iu(req)->srp.rsp.tag; /* right byte order */
201
202 if (rc == 0) {
203 req->crq.s.status = VIOSRP_OK;
204 } else {
205 req->crq.s.status = VIOSRP_ADAPTER_FAIL;
206 }
207
208 rc1 = spapr_vio_send_crq(&s->vdev, req->crq.raw);
209 if (rc1) {
210 fprintf(stderr, "vscsi_send_iu: Error sending response\n");
211 return rc1;
212 }
213
214 return rc;
215 }
216
217 static void vscsi_makeup_sense(VSCSIState *s, vscsi_req *req,
218 uint8_t key, uint8_t asc, uint8_t ascq)
219 {
220 req->senselen = SRP_RSP_SENSE_DATA_LEN;
221
222 /* Valid bit and 'current errors' */
223 req->sense[0] = (0x1 << 7 | 0x70);
224 /* Sense key */
225 req->sense[2] = key;
226 /* Additional sense length */
227 req->sense[7] = 0xa; /* 10 bytes */
228 /* Additional sense code */
229 req->sense[12] = asc;
230 req->sense[13] = ascq;
231 }
232
233 static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req,
234 uint8_t status, int32_t res_in, int32_t res_out)
235 {
236 union viosrp_iu *iu = req_iu(req);
237 uint64_t tag = iu->srp.rsp.tag;
238 int total_len = sizeof(iu->srp.rsp);
239 uint8_t sol_not = iu->srp.cmd.sol_not;
240
241 trace_spapr_vscsi_send_rsp(status, res_in, res_out);
242
243 memset(iu, 0, sizeof(struct srp_rsp));
244 iu->srp.rsp.opcode = SRP_RSP;
245 iu->srp.rsp.req_lim_delta = cpu_to_be32(1);
246 iu->srp.rsp.tag = tag;
247
248 /* Handle residuals */
249 if (res_in < 0) {
250 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIUNDER;
251 res_in = -res_in;
252 } else if (res_in) {
253 iu->srp.rsp.flags |= SRP_RSP_FLAG_DIOVER;
254 }
255 if (res_out < 0) {
256 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOUNDER;
257 res_out = -res_out;
258 } else if (res_out) {
259 iu->srp.rsp.flags |= SRP_RSP_FLAG_DOOVER;
260 }
261 iu->srp.rsp.data_in_res_cnt = cpu_to_be32(res_in);
262 iu->srp.rsp.data_out_res_cnt = cpu_to_be32(res_out);
263
264 /* We don't do response data */
265 /* iu->srp.rsp.flags &= ~SRP_RSP_FLAG_RSPVALID; */
266 iu->srp.rsp.resp_data_len = cpu_to_be32(0);
267
268 /* Handle success vs. failure */
269 iu->srp.rsp.status = status;
270 if (status) {
271 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2;
272 if (req->senselen) {
273 int sense_data_len = MIN(req->senselen, SRP_MAX_IU_DATA_LEN);
274
275 iu->srp.rsp.flags |= SRP_RSP_FLAG_SNSVALID;
276 iu->srp.rsp.sense_data_len = cpu_to_be32(sense_data_len);
277 memcpy(iu->srp.rsp.data, req->sense, sense_data_len);
278 total_len += sense_data_len;
279 }
280 } else {
281 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1;
282 }
283
284 vscsi_send_iu(s, req, total_len, VIOSRP_SRP_FORMAT);
285 return 0;
286 }
287
288 static inline struct srp_direct_buf vscsi_swap_desc(struct srp_direct_buf desc)
289 {
290 desc.va = be64_to_cpu(desc.va);
291 desc.len = be32_to_cpu(desc.len);
292 return desc;
293 }
294
295 static int vscsi_fetch_desc(VSCSIState *s, struct vscsi_req *req,
296 unsigned n, unsigned buf_offset,
297 struct srp_direct_buf *ret)
298 {
299 struct srp_cmd *cmd = &req_iu(req)->srp.cmd;
300
301 switch (req->dma_fmt) {
302 case SRP_NO_DATA_DESC: {
303 trace_spapr_vscsi_fetch_desc_no_data();
304 return 0;
305 }
306 case SRP_DATA_DESC_DIRECT: {
307 memcpy(ret, cmd->add_data + req->cdb_offset, sizeof(*ret));
308 assert(req->cur_desc_num == 0);
309 trace_spapr_vscsi_fetch_desc_direct();
310 break;
311 }
312 case SRP_DATA_DESC_INDIRECT: {
313 struct srp_indirect_buf *tmp = (struct srp_indirect_buf *)
314 (cmd->add_data + req->cdb_offset);
315 if (n < req->local_desc) {
316 *ret = tmp->desc_list[n];
317 trace_spapr_vscsi_fetch_desc_indirect(req->qtag, n,
318 req->local_desc);
319 } else if (n < req->total_desc) {
320 int rc;
321 struct srp_direct_buf tbl_desc = vscsi_swap_desc(tmp->table_desc);
322 unsigned desc_offset = n * sizeof(struct srp_direct_buf);
323
324 if (desc_offset >= tbl_desc.len) {
325 trace_spapr_vscsi_fetch_desc_out_of_range(n, desc_offset);
326 return -1;
327 }
328 rc = spapr_vio_dma_read(&s->vdev, tbl_desc.va + desc_offset,
329 ret, sizeof(struct srp_direct_buf));
330 if (rc) {
331 trace_spapr_vscsi_fetch_desc_dma_read_error(rc);
332 return -1;
333 }
334 trace_spapr_vscsi_fetch_desc_indirect_seg_ext(req->qtag, n,
335 req->total_desc,
336 tbl_desc.va,
337 tbl_desc.len);
338 } else {
339 trace_spapr_vscsi_fetch_desc_out_of_desc();
340 return 0;
341 }
342 break;
343 }
344 default:
345 fprintf(stderr, "VSCSI: Unknown format %x\n", req->dma_fmt);
346 return -1;
347 }
348
349 *ret = vscsi_swap_desc(*ret);
350 if (buf_offset > ret->len) {
351 trace_spapr_vscsi_fetch_desc_out_of_desc_boundary(buf_offset,
352 req->cur_desc_num,
353 ret->len);
354 return -1;
355 }
356 ret->va += buf_offset;
357 ret->len -= buf_offset;
358
359 trace_spapr_vscsi_fetch_desc_done(req->cur_desc_num, req->cur_desc_offset,
360 ret->va, ret->len);
361
362 return ret->len ? 1 : 0;
363 }
364
365 static int vscsi_srp_direct_data(VSCSIState *s, vscsi_req *req,
366 uint8_t *buf, uint32_t len)
367 {
368 struct srp_direct_buf md;
369 uint32_t llen;
370 int rc = 0;
371
372 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md);
373 if (rc < 0) {
374 return -1;
375 } else if (rc == 0) {
376 return 0;
377 }
378
379 llen = MIN(len, md.len);
380 if (llen) {
381 if (req->writing) { /* writing = to device = reading from memory */
382 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen);
383 } else {
384 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen);
385 }
386 }
387
388 if (rc) {
389 return -1;
390 }
391 req->cur_desc_offset += llen;
392
393 return llen;
394 }
395
396 static int vscsi_srp_indirect_data(VSCSIState *s, vscsi_req *req,
397 uint8_t *buf, uint32_t len)
398 {
399 struct srp_direct_buf md;
400 int rc = 0;
401 uint32_t llen, total = 0;
402
403 trace_spapr_vscsi_srp_indirect_data(len);
404
405 /* While we have data ... */
406 while (len) {
407 rc = vscsi_fetch_desc(s, req, req->cur_desc_num, req->cur_desc_offset, &md);
408 if (rc < 0) {
409 return -1;
410 } else if (rc == 0) {
411 break;
412 }
413
414 /* Perform transfer */
415 llen = MIN(len, md.len);
416 if (req->writing) { /* writing = to device = reading from memory */
417 rc = spapr_vio_dma_read(&s->vdev, md.va, buf, llen);
418 } else {
419 rc = spapr_vio_dma_write(&s->vdev, md.va, buf, llen);
420 }
421 if (rc) {
422 trace_spapr_vscsi_srp_indirect_data_rw(req->writing, rc);
423 break;
424 }
425 trace_spapr_vscsi_srp_indirect_data_buf(buf[0], buf[1], buf[2], buf[3]);
426
427 len -= llen;
428 buf += llen;
429
430 total += llen;
431
432 /* Update current position in the current descriptor */
433 req->cur_desc_offset += llen;
434 if (md.len == llen) {
435 /* Go to the next descriptor if the current one finished */
436 ++req->cur_desc_num;
437 req->cur_desc_offset = 0;
438 }
439 }
440
441 return rc ? -1 : total;
442 }
443
444 static int vscsi_srp_transfer_data(VSCSIState *s, vscsi_req *req,
445 int writing, uint8_t *buf, uint32_t len)
446 {
447 int err = 0;
448
449 switch (req->dma_fmt) {
450 case SRP_NO_DATA_DESC:
451 trace_spapr_vscsi_srp_transfer_data(len);
452 break;
453 case SRP_DATA_DESC_DIRECT:
454 err = vscsi_srp_direct_data(s, req, buf, len);
455 break;
456 case SRP_DATA_DESC_INDIRECT:
457 err = vscsi_srp_indirect_data(s, req, buf, len);
458 break;
459 }
460 return err;
461 }
462
463 /* Bits from linux srp */
464 static int data_out_desc_size(struct srp_cmd *cmd)
465 {
466 int size = 0;
467 uint8_t fmt = cmd->buf_fmt >> 4;
468
469 switch (fmt) {
470 case SRP_NO_DATA_DESC:
471 break;
472 case SRP_DATA_DESC_DIRECT:
473 size = sizeof(struct srp_direct_buf);
474 break;
475 case SRP_DATA_DESC_INDIRECT:
476 size = sizeof(struct srp_indirect_buf) +
477 sizeof(struct srp_direct_buf)*cmd->data_out_desc_cnt;
478 break;
479 default:
480 break;
481 }
482 return size;
483 }
484
485 static int vscsi_preprocess_desc(vscsi_req *req)
486 {
487 struct srp_cmd *cmd = &req_iu(req)->srp.cmd;
488
489 req->cdb_offset = cmd->add_cdb_len & ~3;
490
491 if (req->writing) {
492 req->dma_fmt = cmd->buf_fmt >> 4;
493 } else {
494 req->cdb_offset += data_out_desc_size(cmd);
495 req->dma_fmt = cmd->buf_fmt & ((1U << 4) - 1);
496 }
497
498 switch (req->dma_fmt) {
499 case SRP_NO_DATA_DESC:
500 break;
501 case SRP_DATA_DESC_DIRECT:
502 req->total_desc = req->local_desc = 1;
503 break;
504 case SRP_DATA_DESC_INDIRECT: {
505 struct srp_indirect_buf *ind_tmp = (struct srp_indirect_buf *)
506 (cmd->add_data + req->cdb_offset);
507
508 req->total_desc = be32_to_cpu(ind_tmp->table_desc.len) /
509 sizeof(struct srp_direct_buf);
510 req->local_desc = req->writing ? cmd->data_out_desc_cnt :
511 cmd->data_in_desc_cnt;
512 break;
513 }
514 default:
515 fprintf(stderr,
516 "vscsi_preprocess_desc: Unknown format %x\n", req->dma_fmt);
517 return -1;
518 }
519
520 return 0;
521 }
522
523 /* Callback to indicate that the SCSI layer has completed a transfer. */
524 static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t len)
525 {
526 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent);
527 vscsi_req *req = sreq->hba_private;
528 uint8_t *buf;
529 int rc = 0;
530
531 trace_spapr_vscsi_transfer_data(sreq->tag, len, req);
532 if (req == NULL) {
533 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag);
534 return;
535 }
536
537 if (len) {
538 buf = scsi_req_get_buf(sreq);
539 rc = vscsi_srp_transfer_data(s, req, req->writing, buf, len);
540 }
541 if (rc < 0) {
542 fprintf(stderr, "VSCSI: RDMA error rc=%d!\n", rc);
543 req->dma_error = true;
544 scsi_req_cancel(req->sreq);
545 return;
546 }
547
548 /* Start next chunk */
549 req->data_len -= rc;
550 scsi_req_continue(sreq);
551 }
552
553 /* Callback to indicate that the SCSI layer has completed a transfer. */
554 static void vscsi_command_complete(SCSIRequest *sreq, uint32_t status, size_t resid)
555 {
556 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent);
557 vscsi_req *req = sreq->hba_private;
558 int32_t res_in = 0, res_out = 0;
559
560 trace_spapr_vscsi_command_complete(sreq->tag, status, req);
561 if (req == NULL) {
562 fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag);
563 return;
564 }
565
566 if (status == CHECK_CONDITION) {
567 req->senselen = scsi_req_get_sense(req->sreq, req->sense,
568 sizeof(req->sense));
569 trace_spapr_vscsi_command_complete_sense_data1(req->senselen,
570 req->sense[0], req->sense[1], req->sense[2], req->sense[3],
571 req->sense[4], req->sense[5], req->sense[6], req->sense[7]);
572 trace_spapr_vscsi_command_complete_sense_data2(
573 req->sense[8], req->sense[9], req->sense[10], req->sense[11],
574 req->sense[12], req->sense[13], req->sense[14], req->sense[15]);
575 }
576
577 trace_spapr_vscsi_command_complete_status(status);
578 if (status == 0) {
579 /* We handle overflows, not underflows for normal commands,
580 * but hopefully nobody cares
581 */
582 if (req->writing) {
583 res_out = req->data_len;
584 } else {
585 res_in = req->data_len;
586 }
587 }
588 vscsi_send_rsp(s, req, status, res_in, res_out);
589 vscsi_put_req(req);
590 }
591
592 static void vscsi_request_cancelled(SCSIRequest *sreq)
593 {
594 vscsi_req *req = sreq->hba_private;
595
596 if (req->dma_error) {
597 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(sreq->bus->qbus.parent);
598
599 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
600 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
601 }
602 vscsi_put_req(req);
603 }
604
605 static const VMStateDescription vmstate_spapr_vscsi_req = {
606 .name = "spapr_vscsi_req",
607 .version_id = 1,
608 .minimum_version_id = 1,
609 .fields = (VMStateField[]) {
610 VMSTATE_BUFFER(crq.raw, vscsi_req),
611 VMSTATE_BUFFER(viosrp_iu_buf, vscsi_req),
612 VMSTATE_UINT32(qtag, vscsi_req),
613 VMSTATE_BOOL(active, vscsi_req),
614 VMSTATE_UINT32(data_len, vscsi_req),
615 VMSTATE_BOOL(writing, vscsi_req),
616 VMSTATE_UINT32(senselen, vscsi_req),
617 VMSTATE_BUFFER(sense, vscsi_req),
618 VMSTATE_UINT8(dma_fmt, vscsi_req),
619 VMSTATE_UINT16(local_desc, vscsi_req),
620 VMSTATE_UINT16(total_desc, vscsi_req),
621 VMSTATE_UINT16(cdb_offset, vscsi_req),
622 /*Restart SCSI request from the beginning for now */
623 /*VMSTATE_UINT16(cur_desc_num, vscsi_req),
624 VMSTATE_UINT16(cur_desc_offset, vscsi_req),*/
625 VMSTATE_END_OF_LIST()
626 },
627 };
628
629 static void vscsi_save_request(QEMUFile *f, SCSIRequest *sreq)
630 {
631 vscsi_req *req = sreq->hba_private;
632 assert(req->active);
633
634 vmstate_save_state(f, &vmstate_spapr_vscsi_req, req, NULL);
635
636 trace_spapr_vscsi_save_request(req->qtag, req->cur_desc_num,
637 req->cur_desc_offset);
638 }
639
640 static void *vscsi_load_request(QEMUFile *f, SCSIRequest *sreq)
641 {
642 SCSIBus *bus = sreq->bus;
643 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(bus->qbus.parent);
644 vscsi_req *req;
645 int rc;
646
647 assert(sreq->tag < VSCSI_REQ_LIMIT);
648 req = &s->reqs[sreq->tag];
649 assert(!req->active);
650
651 memset(req, 0, sizeof(*req));
652 rc = vmstate_load_state(f, &vmstate_spapr_vscsi_req, req, 1);
653 if (rc) {
654 fprintf(stderr, "VSCSI: failed loading request tag#%u\n", sreq->tag);
655 return NULL;
656 }
657 assert(req->active);
658
659 req->sreq = scsi_req_ref(sreq);
660
661 trace_spapr_vscsi_load_request(req->qtag, req->cur_desc_num,
662 req->cur_desc_offset);
663
664 return req;
665 }
666
667 static void vscsi_process_login(VSCSIState *s, vscsi_req *req)
668 {
669 union viosrp_iu *iu = req_iu(req);
670 struct srp_login_rsp *rsp = &iu->srp.login_rsp;
671 uint64_t tag = iu->srp.rsp.tag;
672
673 trace_spapr_vscsi_process_login();
674
675 /* TODO handle case that requested size is wrong and
676 * buffer format is wrong
677 */
678 memset(iu, 0, sizeof(struct srp_login_rsp));
679 rsp->opcode = SRP_LOGIN_RSP;
680 /* Don't advertise quite as many request as we support to
681 * keep room for management stuff etc...
682 */
683 rsp->req_lim_delta = cpu_to_be32(VSCSI_REQ_LIMIT-2);
684 rsp->tag = tag;
685 rsp->max_it_iu_len = cpu_to_be32(SRP_MAX_IU_LEN);
686 rsp->max_ti_iu_len = cpu_to_be32(SRP_MAX_IU_LEN);
687 /* direct and indirect */
688 rsp->buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT);
689
690 vscsi_send_iu(s, req, sizeof(*rsp), VIOSRP_SRP_FORMAT);
691 }
692
693 static void vscsi_inquiry_no_target(VSCSIState *s, vscsi_req *req)
694 {
695 uint8_t *cdb = req_iu(req)->srp.cmd.cdb;
696 uint8_t resp_data[36];
697 int rc, len, alen;
698
699 /* We don't do EVPD. Also check that page_code is 0 */
700 if ((cdb[1] & 0x01) || cdb[2] != 0) {
701 /* Send INVALID FIELD IN CDB */
702 vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0);
703 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
704 return;
705 }
706 alen = cdb[3];
707 alen = (alen << 8) | cdb[4];
708 len = MIN(alen, 36);
709
710 /* Fake up inquiry using PQ=3 */
711 memset(resp_data, 0, 36);
712 resp_data[0] = 0x7f; /* Not capable of supporting a device here */
713 resp_data[2] = 0x06; /* SPS-4 */
714 resp_data[3] = 0x02; /* Resp data format */
715 resp_data[4] = 36 - 5; /* Additional length */
716 resp_data[7] = 0x10; /* Sync transfers */
717 memcpy(&resp_data[16], "QEMU EMPTY ", 16);
718 memcpy(&resp_data[8], "QEMU ", 8);
719
720 req->writing = 0;
721 vscsi_preprocess_desc(req);
722 rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len);
723 if (rc < 0) {
724 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
725 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
726 } else {
727 vscsi_send_rsp(s, req, 0, 36 - rc, 0);
728 }
729 }
730
731 static void vscsi_report_luns(VSCSIState *s, vscsi_req *req)
732 {
733 BusChild *kid;
734 int i, len, n, rc;
735 uint8_t *resp_data;
736 bool found_lun0;
737
738 n = 0;
739 found_lun0 = false;
740 QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
741 SCSIDevice *dev = SCSI_DEVICE(kid->child);
742
743 n += 8;
744 if (dev->channel == 0 && dev->id == 0 && dev->lun == 0) {
745 found_lun0 = true;
746 }
747 }
748 if (!found_lun0) {
749 n += 8;
750 }
751 len = n+8;
752
753 resp_data = g_malloc0(len);
754 stl_be_p(resp_data, n);
755 i = found_lun0 ? 8 : 16;
756 QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
757 DeviceState *qdev = kid->child;
758 SCSIDevice *dev = SCSI_DEVICE(qdev);
759
760 if (dev->id == 0 && dev->channel == 0) {
761 resp_data[i] = 0; /* Use simple LUN for 0 (SAM5 4.7.7.1) */
762 } else {
763 resp_data[i] = (2 << 6); /* Otherwise LUN addressing (4.7.7.4) */
764 }
765 resp_data[i] |= dev->id;
766 resp_data[i+1] = (dev->channel << 5);
767 resp_data[i+1] |= dev->lun;
768 i += 8;
769 }
770
771 vscsi_preprocess_desc(req);
772 rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len);
773 g_free(resp_data);
774 if (rc < 0) {
775 vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0);
776 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
777 } else {
778 vscsi_send_rsp(s, req, 0, len - rc, 0);
779 }
780 }
781
782 static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req)
783 {
784 union srp_iu *srp = &req_iu(req)->srp;
785 SCSIDevice *sdev;
786 int n, lun;
787
788 if ((srp->cmd.lun == 0 || be64_to_cpu(srp->cmd.lun) == SRP_REPORT_LUNS_WLUN)
789 && srp->cmd.cdb[0] == REPORT_LUNS) {
790 vscsi_report_luns(s, req);
791 return 0;
792 }
793
794 sdev = vscsi_device_find(&s->bus, be64_to_cpu(srp->cmd.lun), &lun);
795 if (!sdev) {
796 trace_spapr_vscsi_queue_cmd_no_drive(be64_to_cpu(srp->cmd.lun));
797 if (srp->cmd.cdb[0] == INQUIRY) {
798 vscsi_inquiry_no_target(s, req);
799 } else {
800 vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0x00);
801 vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0);
802 } return 1;
803 }
804
805 req->sreq = scsi_req_new(sdev, req->qtag, lun, srp->cmd.cdb, req);
806 n = scsi_req_enqueue(req->sreq);
807
808 trace_spapr_vscsi_queue_cmd(req->qtag, srp->cmd.cdb[0],
809 scsi_command_name(srp->cmd.cdb[0]), lun, n);
810
811 if (n) {
812 /* Transfer direction must be set before preprocessing the
813 * descriptors
814 */
815 req->writing = (n < 1);
816
817 /* Preprocess RDMA descriptors */
818 vscsi_preprocess_desc(req);
819
820 /* Get transfer direction and initiate transfer */
821 if (n > 0) {
822 req->data_len = n;
823 } else if (n < 0) {
824 req->data_len = -n;
825 }
826 scsi_req_continue(req->sreq);
827 }
828 /* Don't touch req here, it may have been recycled already */
829
830 return 0;
831 }
832
833 static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
834 {
835 union viosrp_iu *iu = req_iu(req);
836 vscsi_req *tmpreq;
837 int i, lun = 0, resp = SRP_TSK_MGMT_COMPLETE;
838 SCSIDevice *d;
839 uint64_t tag = iu->srp.rsp.tag;
840 uint8_t sol_not = iu->srp.cmd.sol_not;
841
842 trace_spapr_vscsi_process_tsk_mgmt(iu->srp.tsk_mgmt.tsk_mgmt_func);
843 d = vscsi_device_find(&s->bus,
844 be64_to_cpu(req_iu(req)->srp.tsk_mgmt.lun), &lun);
845 if (!d) {
846 resp = SRP_TSK_MGMT_FIELDS_INVALID;
847 } else {
848 switch (iu->srp.tsk_mgmt.tsk_mgmt_func) {
849 case SRP_TSK_ABORT_TASK:
850 if (d->lun != lun) {
851 resp = SRP_TSK_MGMT_FIELDS_INVALID;
852 break;
853 }
854
855 tmpreq = vscsi_find_req(s, req_iu(req)->srp.tsk_mgmt.task_tag);
856 if (tmpreq && tmpreq->sreq) {
857 assert(tmpreq->sreq->hba_private);
858 scsi_req_cancel(tmpreq->sreq);
859 }
860 break;
861
862 case SRP_TSK_LUN_RESET:
863 if (d->lun != lun) {
864 resp = SRP_TSK_MGMT_FIELDS_INVALID;
865 break;
866 }
867
868 qdev_reset_all(&d->qdev);
869 break;
870
871 case SRP_TSK_ABORT_TASK_SET:
872 case SRP_TSK_CLEAR_TASK_SET:
873 if (d->lun != lun) {
874 resp = SRP_TSK_MGMT_FIELDS_INVALID;
875 break;
876 }
877
878 for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
879 tmpreq = &s->reqs[i];
880 if (req_iu(tmpreq)->srp.cmd.lun
881 != req_iu(req)->srp.tsk_mgmt.lun) {
882 continue;
883 }
884 if (!tmpreq->active || !tmpreq->sreq) {
885 continue;
886 }
887 assert(tmpreq->sreq->hba_private);
888 scsi_req_cancel(tmpreq->sreq);
889 }
890 break;
891
892 case SRP_TSK_CLEAR_ACA:
893 resp = SRP_TSK_MGMT_NOT_SUPPORTED;
894 break;
895
896 default:
897 resp = SRP_TSK_MGMT_FIELDS_INVALID;
898 break;
899 }
900 }
901
902 /* Compose the response here as */
903 QEMU_BUILD_BUG_ON(SRP_MAX_IU_DATA_LEN < 4);
904 memset(iu, 0, sizeof(struct srp_rsp) + 4);
905 iu->srp.rsp.opcode = SRP_RSP;
906 iu->srp.rsp.req_lim_delta = cpu_to_be32(1);
907 iu->srp.rsp.tag = tag;
908 iu->srp.rsp.flags |= SRP_RSP_FLAG_RSPVALID;
909 iu->srp.rsp.resp_data_len = cpu_to_be32(4);
910 if (resp) {
911 iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2;
912 } else {
913 iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1;
914 }
915
916 iu->srp.rsp.status = GOOD;
917 iu->srp.rsp.data[3] = resp;
918
919 vscsi_send_iu(s, req, sizeof(iu->srp.rsp) + 4, VIOSRP_SRP_FORMAT);
920
921 return 1;
922 }
923
924 static int vscsi_handle_srp_req(VSCSIState *s, vscsi_req *req)
925 {
926 union srp_iu *srp = &req_iu(req)->srp;
927 int done = 1;
928 uint8_t opcode = srp->rsp.opcode;
929
930 switch (opcode) {
931 case SRP_LOGIN_REQ:
932 vscsi_process_login(s, req);
933 break;
934 case SRP_TSK_MGMT:
935 done = vscsi_process_tsk_mgmt(s, req);
936 break;
937 case SRP_CMD:
938 done = vscsi_queue_cmd(s, req);
939 break;
940 case SRP_LOGIN_RSP:
941 case SRP_I_LOGOUT:
942 case SRP_T_LOGOUT:
943 case SRP_RSP:
944 case SRP_CRED_REQ:
945 case SRP_CRED_RSP:
946 case SRP_AER_REQ:
947 case SRP_AER_RSP:
948 fprintf(stderr, "VSCSI: Unsupported opcode %02x\n", opcode);
949 break;
950 default:
951 fprintf(stderr, "VSCSI: Unknown type %02x\n", opcode);
952 }
953
954 return done;
955 }
956
957 static int vscsi_send_adapter_info(VSCSIState *s, vscsi_req *req)
958 {
959 struct viosrp_adapter_info *sinfo;
960 struct mad_adapter_info_data info;
961 int rc;
962
963 sinfo = &req_iu(req)->mad.adapter_info;
964
965 #if 0 /* What for ? */
966 rc = spapr_vio_dma_read(&s->vdev, be64_to_cpu(sinfo->buffer),
967 &info, be16_to_cpu(sinfo->common.length));
968 if (rc) {
969 fprintf(stderr, "vscsi_send_adapter_info: DMA read failure !\n");
970 }
971 #endif
972 memset(&info, 0, sizeof(info));
973 strcpy(info.srp_version, SRP_VERSION);
974 memcpy(info.partition_name, "qemu", sizeof("qemu"));
975 info.partition_number = cpu_to_be32(0);
976 info.mad_version = cpu_to_be32(1);
977 info.os_type = cpu_to_be32(2);
978 info.port_max_txu[0] = cpu_to_be32(VSCSI_MAX_SECTORS << 9);
979
980 rc = spapr_vio_dma_write(&s->vdev, be64_to_cpu(sinfo->buffer),
981 &info, be16_to_cpu(sinfo->common.length));
982 if (rc) {
983 fprintf(stderr, "vscsi_send_adapter_info: DMA write failure !\n");
984 }
985
986 sinfo->common.status = rc ? cpu_to_be32(1) : 0;
987
988 return vscsi_send_iu(s, req, sizeof(*sinfo), VIOSRP_MAD_FORMAT);
989 }
990
991 static int vscsi_send_capabilities(VSCSIState *s, vscsi_req *req)
992 {
993 struct viosrp_capabilities *vcap;
994 struct capabilities cap = { };
995 uint16_t len, req_len;
996 uint64_t buffer;
997 int rc;
998
999 vcap = &req_iu(req)->mad.capabilities;
1000 req_len = len = be16_to_cpu(vcap->common.length);
1001 buffer = be64_to_cpu(vcap->buffer);
1002 if (len > sizeof(cap)) {
1003 fprintf(stderr, "vscsi_send_capabilities: capabilities size mismatch !\n");
1004
1005 /*
1006 * Just read and populate the structure that is known.
1007 * Zero rest of the structure.
1008 */
1009 len = sizeof(cap);
1010 }
1011 rc = spapr_vio_dma_read(&s->vdev, buffer, &cap, len);
1012 if (rc) {
1013 fprintf(stderr, "vscsi_send_capabilities: DMA read failure !\n");
1014 }
1015
1016 /*
1017 * Current implementation does not suppport any migration or
1018 * reservation capabilities. Construct the response telling the
1019 * guest not to use them.
1020 */
1021 cap.flags = 0;
1022 cap.migration.ecl = 0;
1023 cap.reserve.type = 0;
1024 cap.migration.common.server_support = 0;
1025 cap.reserve.common.server_support = 0;
1026
1027 rc = spapr_vio_dma_write(&s->vdev, buffer, &cap, len);
1028 if (rc) {
1029 fprintf(stderr, "vscsi_send_capabilities: DMA write failure !\n");
1030 }
1031 if (req_len > len) {
1032 /*
1033 * Being paranoid and lets not worry about the error code
1034 * here. Actual write of the cap is done above.
1035 */
1036 spapr_vio_dma_set(&s->vdev, (buffer + len), 0, (req_len - len));
1037 }
1038 vcap->common.status = rc ? cpu_to_be32(1) : 0;
1039 return vscsi_send_iu(s, req, sizeof(*vcap), VIOSRP_MAD_FORMAT);
1040 }
1041
1042 static int vscsi_handle_mad_req(VSCSIState *s, vscsi_req *req)
1043 {
1044 union mad_iu *mad = &req_iu(req)->mad;
1045 bool request_handled = false;
1046 uint64_t retlen = 0;
1047
1048 switch (be32_to_cpu(mad->empty_iu.common.type)) {
1049 case VIOSRP_EMPTY_IU_TYPE:
1050 fprintf(stderr, "Unsupported EMPTY MAD IU\n");
1051 retlen = sizeof(mad->empty_iu);
1052 break;
1053 case VIOSRP_ERROR_LOG_TYPE:
1054 fprintf(stderr, "Unsupported ERROR LOG MAD IU\n");
1055 retlen = sizeof(mad->error_log);
1056 break;
1057 case VIOSRP_ADAPTER_INFO_TYPE:
1058 vscsi_send_adapter_info(s, req);
1059 request_handled = true;
1060 break;
1061 case VIOSRP_HOST_CONFIG_TYPE:
1062 retlen = sizeof(mad->host_config);
1063 break;
1064 case VIOSRP_CAPABILITIES_TYPE:
1065 vscsi_send_capabilities(s, req);
1066 request_handled = true;
1067 break;
1068 default:
1069 fprintf(stderr, "VSCSI: Unknown MAD type %02x\n",
1070 be32_to_cpu(mad->empty_iu.common.type));
1071 /*
1072 * PAPR+ says that "The length field is set to the length
1073 * of the data structure(s) used in the command".
1074 * As we did not recognize the request type, put zero there.
1075 */
1076 retlen = 0;
1077 }
1078
1079 if (!request_handled) {
1080 mad->empty_iu.common.status = cpu_to_be16(VIOSRP_MAD_NOT_SUPPORTED);
1081 vscsi_send_iu(s, req, retlen, VIOSRP_MAD_FORMAT);
1082 }
1083
1084 return 1;
1085 }
1086
1087 static void vscsi_got_payload(VSCSIState *s, vscsi_crq *crq)
1088 {
1089 vscsi_req *req;
1090 int done;
1091
1092 req = vscsi_get_req(s);
1093 if (req == NULL) {
1094 fprintf(stderr, "VSCSI: Failed to get a request !\n");
1095 return;
1096 }
1097
1098 /* We only support a limited number of descriptors, we know
1099 * the ibmvscsi driver uses up to 10 max, so it should fit
1100 * in our 256 bytes IUs. If not we'll have to increase the size
1101 * of the structure.
1102 */
1103 if (crq->s.IU_length > SRP_MAX_IU_LEN) {
1104 fprintf(stderr, "VSCSI: SRP IU too long (%d bytes) !\n",
1105 crq->s.IU_length);
1106 vscsi_put_req(req);
1107 return;
1108 }
1109
1110 /* XXX Handle failure differently ? */
1111 if (spapr_vio_dma_read(&s->vdev, crq->s.IU_data_ptr, &req->viosrp_iu_buf,
1112 crq->s.IU_length)) {
1113 fprintf(stderr, "vscsi_got_payload: DMA read failure !\n");
1114 vscsi_put_req(req);
1115 return;
1116 }
1117 memcpy(&req->crq, crq, sizeof(vscsi_crq));
1118
1119 if (crq->s.format == VIOSRP_MAD_FORMAT) {
1120 done = vscsi_handle_mad_req(s, req);
1121 } else {
1122 done = vscsi_handle_srp_req(s, req);
1123 }
1124
1125 if (done) {
1126 vscsi_put_req(req);
1127 }
1128 }
1129
1130
1131 static int vscsi_do_crq(struct SpaprVioDevice *dev, uint8_t *crq_data)
1132 {
1133 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev);
1134 vscsi_crq crq;
1135
1136 memcpy(crq.raw, crq_data, 16);
1137 crq.s.timeout = be16_to_cpu(crq.s.timeout);
1138 crq.s.IU_length = be16_to_cpu(crq.s.IU_length);
1139 crq.s.IU_data_ptr = be64_to_cpu(crq.s.IU_data_ptr);
1140
1141 trace_spapr_vscsi_do_crq(crq.raw[0], crq.raw[1]);
1142
1143 switch (crq.s.valid) {
1144 case 0xc0: /* Init command/response */
1145
1146 /* Respond to initialization request */
1147 if (crq.s.format == 0x01) {
1148 memset(crq.raw, 0, 16);
1149 crq.s.valid = 0xc0;
1150 crq.s.format = 0x02;
1151 spapr_vio_send_crq(dev, crq.raw);
1152 }
1153
1154 /* Note that in hotplug cases, we might get a 0x02
1155 * as a result of us emitting the init request
1156 */
1157
1158 break;
1159 case 0xff: /* Link event */
1160
1161 /* Not handled for now */
1162
1163 break;
1164 case 0x80: /* Payloads */
1165 switch (crq.s.format) {
1166 case VIOSRP_SRP_FORMAT: /* AKA VSCSI request */
1167 case VIOSRP_MAD_FORMAT: /* AKA VSCSI response */
1168 vscsi_got_payload(s, &crq);
1169 break;
1170 case VIOSRP_OS400_FORMAT:
1171 case VIOSRP_AIX_FORMAT:
1172 case VIOSRP_LINUX_FORMAT:
1173 case VIOSRP_INLINE_FORMAT:
1174 fprintf(stderr, "vscsi_do_srq: Unsupported payload format %02x\n",
1175 crq.s.format);
1176 break;
1177 default:
1178 fprintf(stderr, "vscsi_do_srq: Unknown payload format %02x\n",
1179 crq.s.format);
1180 }
1181 break;
1182 default:
1183 fprintf(stderr, "vscsi_do_crq: unknown CRQ %02x %02x ...\n",
1184 crq.raw[0], crq.raw[1]);
1185 };
1186
1187 return 0;
1188 }
1189
1190 static const struct SCSIBusInfo vscsi_scsi_info = {
1191 .tcq = true,
1192 .max_channel = 7, /* logical unit addressing format */
1193 .max_target = 63,
1194 .max_lun = 31,
1195
1196 .transfer_data = vscsi_transfer_data,
1197 .complete = vscsi_command_complete,
1198 .cancel = vscsi_request_cancelled,
1199 .save_request = vscsi_save_request,
1200 .load_request = vscsi_load_request,
1201 };
1202
1203 static void spapr_vscsi_reset(SpaprVioDevice *dev)
1204 {
1205 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev);
1206 int i;
1207
1208 memset(s->reqs, 0, sizeof(s->reqs));
1209 for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
1210 s->reqs[i].qtag = i;
1211 }
1212 }
1213
1214 static void spapr_vscsi_realize(SpaprVioDevice *dev, Error **errp)
1215 {
1216 VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(dev);
1217
1218 dev->crq.SendFunc = vscsi_do_crq;
1219
1220 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
1221 &vscsi_scsi_info, NULL);
1222 }
1223
1224 void spapr_vscsi_create(SpaprVioBus *bus)
1225 {
1226 DeviceState *dev;
1227
1228 dev = qdev_new("spapr-vscsi");
1229
1230 qdev_realize_and_unref(dev, &bus->bus, &error_fatal);
1231 scsi_bus_legacy_handle_cmdline(&VIO_SPAPR_VSCSI_DEVICE(dev)->bus);
1232 }
1233
1234 static int spapr_vscsi_devnode(SpaprVioDevice *dev, void *fdt, int node_off)
1235 {
1236 int ret;
1237
1238 ret = fdt_setprop_cell(fdt, node_off, "#address-cells", 2);
1239 if (ret < 0) {
1240 return ret;
1241 }
1242
1243 ret = fdt_setprop_cell(fdt, node_off, "#size-cells", 0);
1244 if (ret < 0) {
1245 return ret;
1246 }
1247
1248 return 0;
1249 }
1250
1251 static Property spapr_vscsi_properties[] = {
1252 DEFINE_SPAPR_PROPERTIES(VSCSIState, vdev),
1253 DEFINE_PROP_END_OF_LIST(),
1254 };
1255
1256 static const VMStateDescription vmstate_spapr_vscsi = {
1257 .name = "spapr_vscsi",
1258 .version_id = 1,
1259 .minimum_version_id = 1,
1260 .fields = (VMStateField[]) {
1261 VMSTATE_SPAPR_VIO(vdev, VSCSIState),
1262 /* VSCSI state */
1263 /* ???? */
1264
1265 VMSTATE_END_OF_LIST()
1266 },
1267 };
1268
1269 static void spapr_vscsi_class_init(ObjectClass *klass, void *data)
1270 {
1271 DeviceClass *dc = DEVICE_CLASS(klass);
1272 SpaprVioDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass);
1273
1274 k->realize = spapr_vscsi_realize;
1275 k->reset = spapr_vscsi_reset;
1276 k->devnode = spapr_vscsi_devnode;
1277 k->dt_name = "v-scsi";
1278 k->dt_type = "vscsi";
1279 k->dt_compatible = "IBM,v-scsi";
1280 k->signal_mask = 0x00000001;
1281 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1282 device_class_set_props(dc, spapr_vscsi_properties);
1283 k->rtce_window_size = 0x10000000;
1284 dc->vmsd = &vmstate_spapr_vscsi;
1285 }
1286
1287 static const TypeInfo spapr_vscsi_info = {
1288 .name = TYPE_VIO_SPAPR_VSCSI_DEVICE,
1289 .parent = TYPE_VIO_SPAPR_DEVICE,
1290 .instance_size = sizeof(VSCSIState),
1291 .class_init = spapr_vscsi_class_init,
1292 };
1293
1294 static void spapr_vscsi_register_types(void)
1295 {
1296 type_register_static(&spapr_vscsi_info);
1297 }
1298
1299 type_init(spapr_vscsi_register_types)