1 /* $NetBSD: vdsk.c,v 1.10 2022/05/16 17:13:28 palle Exp $ */
2 /* $OpenBSD: vdsk.c,v 1.46 2015/01/25 21:42:13 kettenis Exp $ */
3 /*
4 * Copyright (c) 2009, 2011 Mark Kettenis
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/kmem.h>
20 #include <sys/param.h>
21 #include <sys/buf.h>
22 #include <sys/device.h>
23 #include <sys/systm.h>
24
25 #include <machine/autoconf.h>
26 #include <machine/hypervisor.h>
27
28 #include <uvm/uvm_extern.h>
29
30 #include <dev/scsipi/scsi_all.h>
31 #include <dev/scsipi/scsipi_disk.h>
32 #include <dev/scsipi/scsipi_cd.h>
33 #include <dev/scsipi/scsiconf.h>
34
35 #include <dev/scsipi/scsi_disk.h>
36 #include <dev/scsipi/scsipi_all.h>
37 #include <dev/scsipi/scsiconf.h>
38 #include <dev/scsipi/scsi_message.h>
39
40 #include <sparc64/dev/cbusvar.h>
41 #include <sparc64/dev/ldcvar.h>
42 #include <sparc64/dev/viovar.h>
43
44 #ifdef VDSK_DEBUG
45 #define DPRINTF(x) printf x
46 #else
47 #define DPRINTF(x)
48 #endif
49
50 #define VDSK_TX_ENTRIES 32
51 #define VDSK_RX_ENTRIES 32
52
53 struct vd_attr_info {
54 struct vio_msg_tag tag;
55 uint8_t xfer_mode;
56 uint8_t vd_type;
57 uint8_t vd_mtype;
58 uint8_t _reserved1;
59 uint32_t vdisk_block_size;
60 uint64_t operations;
61 uint64_t vdisk_size;
62 uint64_t max_xfer_sz;
63 uint64_t _reserved2[2];
64 };
65
66 #define VD_DISK_TYPE_SLICE 0x01
67 #define VD_DISK_TYPE_DISK 0x02
68
69 #define VD_MEDIA_TYPE_FIXED 0x01
70 #define VD_MEDIA_TYPE_CD 0x02
71 #define VD_MEDIA_TYPE_DVD 0x03
72
73 /* vDisk version 1.0. */
74 #define VD_OP_BREAD 0x01
75 #define VD_OP_BWRITE 0x02
76 #define VD_OP_FLUSH 0x03
77 #define VD_OP_GET_WCE 0x04
78 #define VD_OP_SET_WCE 0x05
79 #define VD_OP_GET_VTOC 0x06
80 #define VD_OP_SET_VTOC 0x07
81 #define VD_OP_GET_DISKGEOM 0x08
82 #define VD_OP_SET_DISKGEOM 0x09
83 #define VD_OP_GET_DEVID 0x0b
84 #define VD_OP_GET_EFI 0x0c
85 #define VD_OP_SET_EFI 0x0d
86
87 /* vDisk version 1.1 */
88 #define VD_OP_SCSICMD 0x0a
89 #define VD_OP_RESET 0x0e
90 #define VD_OP_GET_ACCESS 0x0f
91 #define VD_OP_SET_ACCESS 0x10
92 #define VD_OP_GET_CAPACITY 0x11
93
94 struct vd_desc {
95 struct vio_dring_hdr hdr;
96 uint64_t req_id;
97 uint8_t operation;
98 uint8_t slice;
99 uint16_t _reserved1;
100 uint32_t status;
101 uint64_t offset;
102 uint64_t size;
103 uint32_t ncookies;
104 uint32_t _reserved2;
105 struct ldc_cookie cookie[MAXPHYS / PAGE_SIZE];
106 };
107
108 #define VD_SLICE_NONE 0xff
109
110 struct vdsk_dring {
111 bus_dmamap_t vd_map;
112 bus_dma_segment_t vd_seg;
113 struct vd_desc *vd_desc;
114 int vd_nentries;
115 };
116
117 #if OPENBSD_BUSDMA
118 struct vdsk_dring *vdsk_dring_alloc(bus_dma_tag_t, int);
119 void vdsk_dring_free(bus_dma_tag_t, struct vdsk_dring *);
120 #else
121 struct vdsk_dring *vdsk_dring_alloc(int);
122 void vdsk_dring_free(struct vdsk_dring *);
123 #endif
124
125 /*
126 * We support vDisk 1.0 and 1.1.
127 */
128 #define VDSK_MAJOR 1
129 #define VDSK_MINOR 1
130
131 struct vdsk_soft_desc {
132 int vsd_map_idx[MAXPHYS / PAGE_SIZE];
133 struct scsipi_xfer *vsd_xs;
134 int vsd_ncookies;
135 };
136
137 struct vdsk_softc {
138 device_t sc_dv;
139
140 struct scsipi_adapter sc_adapter;
141 struct scsipi_channel sc_channel;
142
143 bus_space_tag_t sc_bustag;
144 bus_dma_tag_t sc_dmatag;
145
146 void *sc_tx_ih;
147 void *sc_rx_ih;
148
149 struct ldc_conn sc_lc;
150
151 uint16_t sc_vio_state;
152 #define VIO_SND_VER_INFO 0x0001
153 #define VIO_ACK_VER_INFO 0x0002
154 #define VIO_SND_ATTR_INFO 0x0004
155 #define VIO_ACK_ATTR_INFO 0x0008
156 #define VIO_SND_DRING_REG 0x0010
157 #define VIO_ACK_DRING_REG 0x0020
158 #define VIO_SND_RDX 0x0040
159 #define VIO_ACK_RDX 0x0080
160 #define VIO_ESTABLISHED 0x00ff
161
162 uint16_t sc_major;
163 uint16_t sc_minor;
164
165 uint32_t sc_local_sid;
166 uint64_t sc_dring_ident;
167 uint64_t sc_seq_no;
168
169 int sc_tx_cnt;
170 int sc_tx_prod;
171 int sc_tx_cons;
172
173 struct ldc_map *sc_lm;
174 struct vdsk_dring *sc_vd;
175 struct vdsk_soft_desc *sc_vsd;
176
177 uint32_t sc_vdisk_block_size;
178 uint64_t sc_vdisk_size;
179 uint8_t sc_vd_mtype;
180 };
181
182 int vdsk_match(device_t, cfdata_t, void *);
183 void vdsk_attach(device_t, device_t, void *);
184 void vdsk_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t,
185 void *);
186
187 CFATTACH_DECL_NEW(vdsk, sizeof(struct vdsk_softc),
188 vdsk_match, vdsk_attach, NULL, NULL);
189
190 int vdsk_tx_intr(void *);
191 int vdsk_rx_intr(void *);
192
193 void vdsk_rx_data(struct ldc_conn *, struct ldc_pkt *);
194 void vdsk_rx_vio_ctrl(struct vdsk_softc *, struct vio_msg *);
195 void vdsk_rx_vio_ver_info(struct vdsk_softc *, struct vio_msg_tag *);
196 void vdsk_rx_vio_attr_info(struct vdsk_softc *, struct vio_msg_tag *);
197 void vdsk_rx_vio_dring_reg(struct vdsk_softc *, struct vio_msg_tag *);
198 void vdsk_rx_vio_rdx(struct vdsk_softc *sc, struct vio_msg_tag *);
199 void vdsk_rx_vio_data(struct vdsk_softc *sc, struct vio_msg *);
200 void vdsk_rx_vio_dring_data(struct vdsk_softc *sc, struct vio_msg_tag *);
201
202 void vdsk_ldc_reset(struct ldc_conn *);
203 void vdsk_ldc_start(struct ldc_conn *);
204
205 void vdsk_sendmsg(struct vdsk_softc *, void *, size_t);
206 void vdsk_send_ver_info(struct vdsk_softc *, uint16_t, uint16_t);
207 void vdsk_send_attr_info(struct vdsk_softc *);
208 void vdsk_send_dring_reg(struct vdsk_softc *);
209 void vdsk_send_rdx(struct vdsk_softc *);
210
211 void *vdsk_io_get(void *);
212 void vdsk_io_put(void *, void *);
213
214 void vdsk_scsi_cmd(struct vdsk_softc *sc, struct scsipi_xfer *);
215 int vdsk_submit_cmd(struct vdsk_softc *sc, struct scsipi_xfer *);
216 void vdsk_complete_cmd(struct vdsk_softc *sc, struct scsipi_xfer *, int);
217 void vdsk_scsi_inq(struct vdsk_softc *sc, struct scsipi_xfer *);
218 void vdsk_scsi_inquiry(struct vdsk_softc *sc, struct scsipi_xfer *);
219 void vdsk_scsi_capacity(struct vdsk_softc *sc, struct scsipi_xfer *);
220 void vdsk_scsi_capacity16(struct vdsk_softc *sc, struct scsipi_xfer *);
221 void vdsk_scsi_report_luns(struct vdsk_softc *sc, struct scsipi_xfer *);
222 void vdsk_scsi_done(struct scsipi_xfer *, int);
223
224 int
vdsk_match(device_t parent,cfdata_t match,void * aux)225 vdsk_match(device_t parent, cfdata_t match, void *aux)
226 {
227 struct cbus_attach_args *ca = aux;
228
229 if (strcmp(ca->ca_name, "disk") == 0)
230 return (1);
231
232 return (0);
233 }
234
235 void
vdsk_attach(device_t parent,device_t self,void * aux)236 vdsk_attach(device_t parent, device_t self, void *aux)
237 {
238 struct vdsk_softc *sc = device_private(self);
239 struct cbus_attach_args *ca = aux;
240 struct ldc_conn *lc;
241 int err, s;
242 int timeout;
243 vaddr_t va;
244 paddr_t pa;
245
246 sc->sc_bustag = ca->ca_bustag;
247 sc->sc_dmatag = ca->ca_dmatag;
248
249 printf(": ivec 0x%llx, 0x%llx",
250 (long long unsigned int)ca->ca_tx_ino,
251 (long long unsigned int)ca->ca_rx_ino);
252
253 /*
254 * Un-configure queues before registering interrupt handlers,
255 * such that we don't get any stale LDC packets or events.
256 */
257 hv_ldc_tx_qconf(ca->ca_id, 0, 0);
258 hv_ldc_rx_qconf(ca->ca_id, 0, 0);
259
260 sc->sc_tx_ih = bus_intr_establish(ca->ca_bustag, ca->ca_tx_ino,
261 IPL_BIO, vdsk_tx_intr, sc);
262 sc->sc_rx_ih = bus_intr_establish(ca->ca_bustag, ca->ca_rx_ino,
263 IPL_BIO, vdsk_rx_intr, sc);
264 if (sc->sc_tx_ih == NULL || sc->sc_rx_ih == NULL) {
265 printf(", can't establish interrupt\n");
266 return;
267 }
268
269 lc = &sc->sc_lc;
270 lc->lc_id = ca->ca_id;
271 lc->lc_sc = sc;
272 lc->lc_reset = vdsk_ldc_reset;
273 lc->lc_start = vdsk_ldc_start;
274 lc->lc_rx_data = vdsk_rx_data;
275
276 #if OPENBSD_BUSDMA
277 lc->lc_txq = ldc_queue_alloc(sc->sc_dmatag, VDSK_TX_ENTRIES);
278 #else
279 lc->lc_txq = ldc_queue_alloc(VDSK_TX_ENTRIES);
280 #endif
281 #if OPENBSD_BUSDMA
282 lc->lc_rxq = ldc_queue_alloc(sc->sc_dmatag, VDSK_RX_ENTRIES);
283 #else
284 lc->lc_rxq = ldc_queue_alloc(VDSK_RX_ENTRIES);
285 #endif
286 #if OPENBSD_BUSDMA
287 sc->sc_lm = ldc_map_alloc(sc->sc_dmatag, 2048);
288 #else
289 sc->sc_lm = ldc_map_alloc(2048);
290 #endif
291 #if OPENBSD_BUSDMA
292 err = hv_ldc_set_map_table(lc->lc_id,
293 sc->sc_lm->lm_map->dm_segs[0].ds_addr, sc->sc_lm->lm_nentries);
294 #else
295 va = (vaddr_t)sc->sc_lm->lm_slot;
296 pa = 0;
297 if (pmap_extract(pmap_kernel(), va, &pa) == FALSE)
298 panic("pmap_extract failed %lx\n", va);
299 err = hv_ldc_set_map_table(lc->lc_id, pa, 2048);
300 #endif
301 if (err != H_EOK) {
302 printf("hv_ldc_set_map_table %d\n", err);
303 goto free_map;
304 }
305 #if OPENBSD_BUSDMA
306 sc->sc_vd = vdsk_dring_alloc(sc->sc_dmatag, 32);
307 #else
308 sc->sc_vd = vdsk_dring_alloc(32);
309 #endif
310 sc->sc_vsd = kmem_zalloc(32 * sizeof(*sc->sc_vsd), KM_SLEEP);
311
312 #if OPENBSD_BUSDMA
313 sc->sc_lm->lm_slot[0].entry = sc->sc_vd->vd_map->dm_segs[0].ds_addr;
314 #else
315 va = (vaddr_t)sc->sc_vd->vd_desc;
316 pa = 0;
317 if (pmap_extract(pmap_kernel(), va, &pa) == FALSE)
318 panic("pmap_extract failed %lx\n", va);
319
320 sc->sc_lm->lm_slot[0].entry = pa;
321 #endif
322 sc->sc_lm->lm_slot[0].entry &= LDC_MTE_RA_MASK;
323 sc->sc_lm->lm_slot[0].entry |= LDC_MTE_CPR | LDC_MTE_CPW;
324 sc->sc_lm->lm_slot[0].entry |= LDC_MTE_R | LDC_MTE_W;
325 sc->sc_lm->lm_next = 1;
326 sc->sc_lm->lm_count = 1;
327 va = lc->lc_txq->lq_va;
328 pa = 0;
329 if (pmap_extract(pmap_kernel(), va, &pa) == FALSE)
330 panic("pmap_extract failed %lx\n", va);
331 #if OPENBSD_BUSDMA
332 err = hv_ldc_tx_qconf(lc->lc_id,
333 lc->lc_txq->lq_map->dm_segs[0].ds_addr, lc->lc_txq->lq_nentries);
334 #else
335 err = hv_ldc_tx_qconf(lc->lc_id, pa, lc->lc_txq->lq_nentries);
336 #endif
337 if (err != H_EOK)
338 printf("hv_ldc_tx_qconf %d\n", err);
339 va = (vaddr_t)lc->lc_rxq->lq_va;
340 pa = 0;
341 if (pmap_extract(pmap_kernel(), va, &pa) == FALSE)
342 panic("pmap_extract failed %lx\n", va);
343 #if OPENBSD_BUSDMA
344 err = hv_ldc_rx_qconf(lc->lc_id,
345 lc->lc_rxq->lq_map->dm_segs[0].ds_addr, lc->lc_rxq->lq_nentries);
346 #else
347 err = hv_ldc_rx_qconf(lc->lc_id, pa, lc->lc_rxq->lq_nentries);
348 #endif
349 if (err != H_EOK)
350 printf("hv_ldc_rx_qconf %d\n", err);
351
352 cbus_intr_setenabled(sc->sc_bustag, ca->ca_tx_ino, INTR_ENABLED);
353 cbus_intr_setenabled(sc->sc_bustag, ca->ca_rx_ino, INTR_ENABLED);
354
355 ldc_send_vers(lc);
356
357 printf("\n");
358
359 /*
360 * Interrupts aren't enabled during autoconf, so poll for VIO
361 * peer-to-peer handshake completion.
362 */
363 s = splbio();
364 timeout = 10 * 1000;
365 do {
366 if (vdsk_rx_intr(sc) && sc->sc_vio_state == VIO_ESTABLISHED)
367 break;
368
369 delay(1000);
370 } while(--timeout > 0);
371 splx(s);
372
373 if (sc->sc_vio_state != VIO_ESTABLISHED) {
374 printf("vio not established: %d\n", sc->sc_vio_state);
375 return;
376 }
377
378 sc->sc_dv = self;
379
380 sc->sc_adapter.adapt_dev = sc->sc_dv;
381 sc->sc_adapter.adapt_nchannels = 1;
382 sc->sc_adapter.adapt_openings = sc->sc_vd->vd_nentries - 1;
383 sc->sc_adapter.adapt_max_periph = sc->sc_vd->vd_nentries - 1;
384
385 sc->sc_adapter.adapt_minphys = minphys;
386 sc->sc_adapter.adapt_request = vdsk_scsipi_request;
387
388 sc->sc_channel.chan_adapter = &sc->sc_adapter;
389 sc->sc_channel.chan_bustype = &scsi_bustype;
390 sc->sc_channel.chan_channel = 0;
391 sc->sc_channel.chan_ntargets = 2; /* XXX why not 1? */
392 sc->sc_channel.chan_nluns = 1; /* XXX slices should be presented as luns? */
393 sc->sc_channel.chan_id = 0;
394 sc->sc_channel.chan_flags = SCSIPI_CHAN_NOSETTLE;
395
396 config_found(self, &sc->sc_channel, scsiprint, CFARGS_NONE);
397
398 return;
399
400 free_map:
401 hv_ldc_set_map_table(lc->lc_id, 0, 0);
402 #if OPENBSD_BUSDMA
403 ldc_map_free(sc->sc_dmatag, sc->sc_lm);
404 #else
405 ldc_map_free(sc->sc_lm);
406 #endif
407 }
408
409 void
vdsk_scsipi_request(struct scsipi_channel * chan,scsipi_adapter_req_t req,void * arg)410 vdsk_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req,
411 void *arg)
412 {
413
414 struct vdsk_softc *sc;
415 struct scsipi_xfer *xs;
416
417 sc = device_private(chan->chan_adapter->adapt_dev);
418
419 xs = arg;
420
421 switch (req) {
422 case ADAPTER_REQ_RUN_XFER:
423 vdsk_scsi_cmd(sc, xs);
424 break;
425 case ADAPTER_REQ_GROW_RESOURCES:
426 case ADAPTER_REQ_SET_XFER_MODE:
427 /* Ignored */
428 break;
429 default:
430 panic("req unhandled: %x", req);
431 }
432
433 }
434
435 int
vdsk_tx_intr(void * arg)436 vdsk_tx_intr(void *arg)
437 {
438 panic("%s: not verified yet", __FUNCTION__);
439
440 struct vdsk_softc *sc = arg;
441 struct ldc_conn *lc = &sc->sc_lc;
442 uint64_t tx_head, tx_tail, tx_state;
443
444 hv_ldc_tx_get_state(lc->lc_id, &tx_head, &tx_tail, &tx_state);
445 if (tx_state != lc->lc_tx_state) {
446 switch (tx_state) {
447 case LDC_CHANNEL_DOWN:
448 DPRINTF(("Tx link down\n"));
449 break;
450 case LDC_CHANNEL_UP:
451 DPRINTF(("Tx link up\n"));
452 break;
453 case LDC_CHANNEL_RESET:
454 DPRINTF(("Tx link reset\n"));
455 break;
456 }
457 lc->lc_tx_state = tx_state;
458 }
459
460 return (1);
461 }
462
463 int
vdsk_rx_intr(void * arg)464 vdsk_rx_intr(void *arg)
465 {
466 struct vdsk_softc *sc = arg;
467 struct ldc_conn *lc = &sc->sc_lc;
468 uint64_t rx_head, rx_tail, rx_state;
469 struct ldc_pkt *lp;
470 int err;
471
472 err = hv_ldc_rx_get_state(lc->lc_id, &rx_head, &rx_tail, &rx_state);
473 if (err == H_EINVAL) {
474 printf("hv_ldc_rx_get_state H_EINVAL\n");
475 return (0);
476 }
477 if (err != H_EOK) {
478 printf("hv_ldc_rx_get_state %d\n", err);
479 return (0);
480 }
481
482 if (rx_state != lc->lc_rx_state) {
483 sc->sc_vio_state = 0;
484 lc->lc_tx_seqid = 0;
485 lc->lc_state = 0;
486 switch (rx_state) {
487 case LDC_CHANNEL_DOWN:
488 DPRINTF(("Rx link down\n"));
489 break;
490 case LDC_CHANNEL_UP:
491 DPRINTF(("Rx link up\n"));
492 ldc_send_vers(lc);
493 break;
494 case LDC_CHANNEL_RESET:
495 DPRINTF(("Rx link reset\n"));
496 ldc_send_vers(lc);
497 break;
498 }
499 lc->lc_rx_state = rx_state;
500 hv_ldc_rx_set_qhead(lc->lc_id, rx_tail);
501 return (1);
502 }
503
504 if (rx_head == rx_tail)
505 return (0);
506
507 lp = (struct ldc_pkt *)(uintptr_t)(lc->lc_rxq->lq_va + rx_head);
508 switch (lp->type) {
509 case LDC_CTRL:
510 ldc_rx_ctrl(lc, lp);
511 break;
512
513 case LDC_DATA:
514 ldc_rx_data(lc, lp);
515 break;
516
517 default:
518 DPRINTF(("%0x02/%0x02/%0x02\n", lp->type, lp->stype,
519 lp->ctrl));
520 ldc_reset(lc);
521 break;
522 }
523
524 if (lc->lc_state == 0)
525 return (1);
526
527 rx_head += sizeof(*lp);
528 rx_head &= ((lc->lc_rxq->lq_nentries * sizeof(*lp)) - 1);
529 err = hv_ldc_rx_set_qhead(lc->lc_id, rx_head);
530 if (err != H_EOK)
531 printf("%s: hv_ldc_rx_set_qhead %d\n", __func__, err);
532
533 return (1);
534 }
535
536 void
vdsk_rx_data(struct ldc_conn * lc,struct ldc_pkt * lp)537 vdsk_rx_data(struct ldc_conn *lc, struct ldc_pkt *lp)
538 {
539 struct vio_msg *vm = (struct vio_msg *)lp;
540
541 switch (vm->type) {
542 case VIO_TYPE_CTRL:
543 if ((lp->env & LDC_FRAG_START) == 0 &&
544 (lp->env & LDC_FRAG_STOP) == 0)
545 return;
546 vdsk_rx_vio_ctrl(lc->lc_sc, vm);
547 break;
548
549 case VIO_TYPE_DATA:
550 if((lp->env & LDC_FRAG_START) == 0)
551 return;
552 vdsk_rx_vio_data(lc->lc_sc, vm);
553 break;
554
555 default:
556 DPRINTF(("Unhandled packet type 0x%02x\n", vm->type));
557 ldc_reset(lc);
558 break;
559 }
560 }
561
562 void
vdsk_rx_vio_ctrl(struct vdsk_softc * sc,struct vio_msg * vm)563 vdsk_rx_vio_ctrl(struct vdsk_softc *sc, struct vio_msg *vm)
564 {
565 struct vio_msg_tag *tag = (struct vio_msg_tag *)&vm->type;
566
567 switch (tag->stype_env) {
568 case VIO_VER_INFO:
569 vdsk_rx_vio_ver_info(sc, tag);
570 break;
571 case VIO_ATTR_INFO:
572 vdsk_rx_vio_attr_info(sc, tag);
573 break;
574 case VIO_DRING_REG:
575 vdsk_rx_vio_dring_reg(sc, tag);
576 break;
577 case VIO_RDX:
578 vdsk_rx_vio_rdx(sc, tag);
579 break;
580 default:
581 DPRINTF(("CTRL/0x%02x/0x%04x\n", tag->stype, tag->stype_env));
582 break;
583 }
584 }
585
586 void
vdsk_rx_vio_ver_info(struct vdsk_softc * sc,struct vio_msg_tag * tag)587 vdsk_rx_vio_ver_info(struct vdsk_softc *sc, struct vio_msg_tag *tag)
588 {
589 struct vio_ver_info *vi = (struct vio_ver_info *)tag;
590
591 switch (vi->tag.stype) {
592 case VIO_SUBTYPE_INFO:
593 DPRINTF(("CTRL/INFO/VER_INFO\n"));
594 break;
595
596 case VIO_SUBTYPE_ACK:
597 DPRINTF(("CTRL/ACK/VER_INFO\n"));
598 if (!ISSET(sc->sc_vio_state, VIO_SND_VER_INFO)) {
599 ldc_reset(&sc->sc_lc);
600 break;
601 }
602 sc->sc_major = vi->major;
603 sc->sc_minor = vi->minor;
604 sc->sc_vio_state |= VIO_ACK_VER_INFO;
605 break;
606
607 default:
608 DPRINTF(("CTRL/0x%02x/VER_INFO\n", vi->tag.stype));
609 break;
610 }
611
612 if (ISSET(sc->sc_vio_state, VIO_ACK_VER_INFO))
613 vdsk_send_attr_info(sc);
614 }
615
616 void
vdsk_rx_vio_attr_info(struct vdsk_softc * sc,struct vio_msg_tag * tag)617 vdsk_rx_vio_attr_info(struct vdsk_softc *sc, struct vio_msg_tag *tag)
618 {
619 struct vd_attr_info *ai = (struct vd_attr_info *)tag;
620
621 switch (ai->tag.stype) {
622 case VIO_SUBTYPE_INFO:
623 DPRINTF(("CTRL/INFO/ATTR_INFO\n"));
624 break;
625
626 case VIO_SUBTYPE_ACK:
627 DPRINTF(("CTRL/ACK/ATTR_INFO\n"));
628 if (!ISSET(sc->sc_vio_state, VIO_SND_ATTR_INFO)) {
629 ldc_reset(&sc->sc_lc);
630 break;
631 }
632
633 sc->sc_vdisk_block_size = ai->vdisk_block_size;
634 sc->sc_vdisk_size = ai->vdisk_size;
635 if (sc->sc_major > 1 || sc->sc_minor >= 1)
636 sc->sc_vd_mtype = ai->vd_mtype;
637 else
638 sc->sc_vd_mtype = VD_MEDIA_TYPE_FIXED;
639
640 sc->sc_vio_state |= VIO_ACK_ATTR_INFO;
641 break;
642
643 default:
644 DPRINTF(("CTRL/0x%02x/ATTR_INFO\n", ai->tag.stype));
645 break;
646 }
647
648 if (ISSET(sc->sc_vio_state, VIO_ACK_ATTR_INFO))
649 vdsk_send_dring_reg(sc);
650
651 }
652
653 void
vdsk_rx_vio_dring_reg(struct vdsk_softc * sc,struct vio_msg_tag * tag)654 vdsk_rx_vio_dring_reg(struct vdsk_softc *sc, struct vio_msg_tag *tag)
655 {
656 struct vio_dring_reg *dr = (struct vio_dring_reg *)tag;
657
658 switch (dr->tag.stype) {
659 case VIO_SUBTYPE_INFO:
660 DPRINTF(("CTRL/INFO/DRING_REG\n"));
661 break;
662
663 case VIO_SUBTYPE_ACK:
664 DPRINTF(("CTRL/ACK/DRING_REG\n"));
665 if (!ISSET(sc->sc_vio_state, VIO_SND_DRING_REG)) {
666 ldc_reset(&sc->sc_lc);
667 break;
668 }
669
670 sc->sc_dring_ident = dr->dring_ident;
671 sc->sc_seq_no = 1;
672
673 sc->sc_vio_state |= VIO_ACK_DRING_REG;
674 break;
675
676 default:
677 DPRINTF(("CTRL/0x%02x/DRING_REG\n", dr->tag.stype));
678 break;
679 }
680
681 if (ISSET(sc->sc_vio_state, VIO_ACK_DRING_REG))
682 vdsk_send_rdx(sc);
683 }
684
685 void
vdsk_rx_vio_rdx(struct vdsk_softc * sc,struct vio_msg_tag * tag)686 vdsk_rx_vio_rdx(struct vdsk_softc *sc, struct vio_msg_tag *tag)
687 {
688 switch(tag->stype) {
689 case VIO_SUBTYPE_INFO:
690 DPRINTF(("CTRL/INFO/RDX\n"));
691 break;
692
693 case VIO_SUBTYPE_ACK:
694 {
695 int prod;
696
697 DPRINTF(("CTRL/ACK/RDX\n"));
698 if (!ISSET(sc->sc_vio_state, VIO_SND_RDX)) {
699 ldc_reset(&sc->sc_lc);
700 break;
701 }
702 sc->sc_vio_state |= VIO_ACK_RDX;
703
704 /*
705 * If this ACK is the result of a reconnect, we may
706 * have pending I/O that we need to resubmit. We need
707 * to rebuild the ring descriptors though since the
708 * vDisk server on the other side may have touched
709 * them already. So we just clean up the ring and the
710 * LDC map and resubmit the SCSI commands based on our
711 * soft descriptors.
712 */
713 prod = sc->sc_tx_prod;
714 sc->sc_tx_prod = sc->sc_tx_cons;
715 sc->sc_tx_cnt = 0;
716 sc->sc_lm->lm_next = 1;
717 sc->sc_lm->lm_count = 1;
718 while (sc->sc_tx_prod != prod)
719 vdsk_submit_cmd(sc, sc->sc_vsd[sc->sc_tx_prod].vsd_xs);
720 break;
721 }
722
723 default:
724 DPRINTF(("CTRL/0x%02x/RDX (VIO)\n", tag->stype));
725 break;
726 }
727 }
728
729 void
vdsk_rx_vio_data(struct vdsk_softc * sc,struct vio_msg * vm)730 vdsk_rx_vio_data(struct vdsk_softc *sc, struct vio_msg *vm)
731 {
732 struct vio_msg_tag *tag = (struct vio_msg_tag *)&vm->type;
733
734 if (sc->sc_vio_state != VIO_ESTABLISHED) {
735 DPRINTF(("Spurious DATA/0x%02x/0x%04x\n", tag->stype,
736 tag->stype_env));
737 return;
738 }
739
740 switch(tag->stype_env) {
741 case VIO_DRING_DATA:
742 vdsk_rx_vio_dring_data(sc, tag);
743 break;
744
745 default:
746 DPRINTF(("DATA/0x%02x/0x%04x\n", tag->stype, tag->stype_env));
747 break;
748 }
749 }
750
751 void
vdsk_rx_vio_dring_data(struct vdsk_softc * sc,struct vio_msg_tag * tag)752 vdsk_rx_vio_dring_data(struct vdsk_softc *sc, struct vio_msg_tag *tag)
753 {
754 switch(tag->stype) {
755 case VIO_SUBTYPE_INFO:
756 DPRINTF(("DATA/INFO/DRING_DATA\n"));
757 break;
758
759 case VIO_SUBTYPE_ACK:
760 {
761 struct scsipi_xfer *xs;
762 int cons;
763
764 cons = sc->sc_tx_cons;
765 while (sc->sc_vd->vd_desc[cons].hdr.dstate == VIO_DESC_DONE) {
766 xs = sc->sc_vsd[cons].vsd_xs;
767 if (ISSET(xs->xs_control, XS_CTL_POLL) == 0)
768 vdsk_complete_cmd(sc, xs, cons);
769 cons++;
770 cons &= (sc->sc_vd->vd_nentries - 1);
771 }
772 sc->sc_tx_cons = cons;
773 break;
774 }
775
776 case VIO_SUBTYPE_NACK:
777 DPRINTF(("DATA/NACK/DRING_DATA\n"));
778 struct ldc_conn *lc = &sc->sc_lc;
779 ldc_send_vers(lc);
780 break;
781
782 default:
783 DPRINTF(("DATA/0x%02x/DRING_DATA\n", tag->stype));
784 break;
785 }
786 }
787
788 void
vdsk_ldc_reset(struct ldc_conn * lc)789 vdsk_ldc_reset(struct ldc_conn *lc)
790 {
791
792 struct vdsk_softc *sc = lc->lc_sc;
793
794 sc->sc_vio_state = 0;
795 }
796
797 void
vdsk_ldc_start(struct ldc_conn * lc)798 vdsk_ldc_start(struct ldc_conn *lc)
799 {
800
801 struct vdsk_softc *sc = lc->lc_sc;
802
803 vdsk_send_ver_info(sc, VDSK_MAJOR, VDSK_MINOR);
804 }
805
806 void
vdsk_sendmsg(struct vdsk_softc * sc,void * msg,size_t len)807 vdsk_sendmsg(struct vdsk_softc *sc, void *msg, size_t len)
808 {
809
810 struct ldc_conn *lc = &sc->sc_lc;
811 int err;
812
813 err = ldc_send_unreliable(lc, msg, len);
814 if (err)
815 printf("%s: ldc_send_unreliable: %d\n", __func__, err);
816 }
817
818 void
vdsk_send_ver_info(struct vdsk_softc * sc,uint16_t major,uint16_t minor)819 vdsk_send_ver_info(struct vdsk_softc *sc, uint16_t major, uint16_t minor)
820 {
821
822 struct vio_ver_info vi;
823
824 /* Allocate new session ID. */
825 sc->sc_local_sid = gettick();
826
827 bzero(&vi, sizeof(vi));
828 vi.tag.type = VIO_TYPE_CTRL;
829 vi.tag.stype = VIO_SUBTYPE_INFO;
830 vi.tag.stype_env = VIO_VER_INFO;
831 vi.tag.sid = sc->sc_local_sid;
832 vi.major = major;
833 vi.minor = minor;
834 vi.dev_class = VDEV_DISK;
835 vdsk_sendmsg(sc, &vi, sizeof(vi));
836
837 sc->sc_vio_state |= VIO_SND_VER_INFO;
838 }
839
840 void
vdsk_send_attr_info(struct vdsk_softc * sc)841 vdsk_send_attr_info(struct vdsk_softc *sc)
842 {
843 struct vd_attr_info ai;
844
845 bzero(&ai, sizeof(ai));
846 ai.tag.type = VIO_TYPE_CTRL;
847 ai.tag.stype = VIO_SUBTYPE_INFO;
848 ai.tag.stype_env = VIO_ATTR_INFO;
849 ai.tag.sid = sc->sc_local_sid;
850 ai.xfer_mode = VIO_DRING_MODE;
851 ai.vdisk_block_size = DEV_BSIZE;
852 ai.max_xfer_sz = MAXPHYS / DEV_BSIZE;
853 vdsk_sendmsg(sc, &ai, sizeof(ai));
854
855 sc->sc_vio_state |= VIO_SND_ATTR_INFO;
856 }
857
858 void
vdsk_send_dring_reg(struct vdsk_softc * sc)859 vdsk_send_dring_reg(struct vdsk_softc *sc)
860 {
861 struct vio_dring_reg dr;
862
863 bzero(&dr, sizeof(dr));
864 dr.tag.type = VIO_TYPE_CTRL;
865 dr.tag.stype = VIO_SUBTYPE_INFO;
866 dr.tag.stype_env = VIO_DRING_REG;
867 dr.tag.sid = sc->sc_local_sid;
868 dr.dring_ident = 0;
869 dr.num_descriptors = sc->sc_vd->vd_nentries;
870 dr.descriptor_size = sizeof(struct vd_desc);
871 dr.options = VIO_TX_RING | VIO_RX_RING;
872 dr.ncookies = 1;
873 dr.cookie[0].addr = 0;
874 dr.cookie[0].size = PAGE_SIZE;
875 vdsk_sendmsg(sc, &dr, sizeof(dr));
876
877 sc->sc_vio_state |= VIO_SND_DRING_REG;
878 };
879
880 void
vdsk_send_rdx(struct vdsk_softc * sc)881 vdsk_send_rdx(struct vdsk_softc *sc)
882 {
883 struct vio_rdx rdx;
884
885 bzero(&rdx, sizeof(rdx));
886 rdx.tag.type = VIO_TYPE_CTRL;
887 rdx.tag.stype = VIO_SUBTYPE_INFO;
888 rdx.tag.stype_env = VIO_RDX;
889 rdx.tag.sid = sc->sc_local_sid;
890 vdsk_sendmsg(sc, &rdx, sizeof(rdx));
891
892 sc->sc_vio_state |= VIO_SND_RDX;
893 }
894
895 #if OPENBSD_BUSDMA
896 struct vdsk_dring *
vdsk_dring_alloc(bus_dma_tag_t t,int nentries)897 vdsk_dring_alloc(bus_dma_tag_t t, int nentries)
898 #else
899 struct vdsk_dring *
900 vdsk_dring_alloc(int nentries)
901 #endif
902 {
903
904 struct vdsk_dring *vd;
905 bus_size_t size;
906 vaddr_t va;
907 #if OPENBSD_BUSDMA
908 int nsegs;
909 #endif
910 int i;
911
912 vd = kmem_zalloc(sizeof(struct vdsk_dring), KM_SLEEP);
913
914 size = roundup(nentries * sizeof(struct vd_desc), PAGE_SIZE);
915
916 #if OPENBSD_BUSDMA
917 if (bus_dmamap_create(t, size, 1, size, 0,
918 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &vd->vd_map) != 0)
919 return (NULL);
920
921 if (bus_dmamem_alloc(t, size, PAGE_SIZE, 0, &vd->vd_seg, 1,
922 &nsegs, BUS_DMA_NOWAIT) != 0)
923 goto destroy;
924
925 if (bus_dmamem_map(t, &vd->vd_seg, 1, size, (void*)&va,
926 BUS_DMA_NOWAIT) != 0)
927 goto free;
928
929 if (bus_dmamap_load(t, vd->vd_map, (void*)va, size, NULL,
930 BUS_DMA_NOWAIT) != 0)
931 goto unmap;
932 #else
933 va = (vaddr_t)kmem_zalloc(size, KM_SLEEP);
934 #endif
935 vd->vd_desc = (struct vd_desc *)va;
936 vd->vd_nentries = nentries;
937 bzero(vd->vd_desc, nentries * sizeof(struct vd_desc));
938 for (i = 0; i < vd->vd_nentries; i++)
939 vd->vd_desc[i].hdr.dstate = VIO_DESC_FREE;
940 return (vd);
941
942 #if OPENBSD_BUSDMA
943 unmap:
944 bus_dmamem_unmap(t, (void*)va, size);
945 free:
946 bus_dmamem_free(t, &vd->vd_seg, 1);
947 destroy:
948 bus_dmamap_destroy(t, vd->vd_map);
949 #endif
950 return (NULL);
951 }
952
953 #if OPENBSD_BUSDMA
954 void
vdsk_dring_free(bus_dma_tag_t t,struct vdsk_dring * vd)955 vdsk_dring_free(bus_dma_tag_t t, struct vdsk_dring *vd)
956 #else
957 void
958 vdsk_dring_free(struct vdsk_dring *vd)
959 #endif
960 {
961
962 bus_size_t size;
963
964 size = vd->vd_nentries * sizeof(struct vd_desc);
965 size = roundup(size, PAGE_SIZE);
966
967 #if OPENBSD_BUSDMA
968 bus_dmamap_unload(t, vd->vd_map);
969
970 bus_dmamem_unmap(t, (caddr_t)vd->vd_desc, size);
971 bus_dmamem_free(t, &vd->vd_seg, 1);
972 bus_dmamap_destroy(t, vd->vd_map);
973 #else
974 kmem_free(vd->vd_desc, size);
975 #endif
976 kmem_free(vd, size);
977 }
978
979 void *
vdsk_io_get(void * xsc)980 vdsk_io_get(void *xsc)
981 {
982
983 panic("%s: not verified yet", __FUNCTION__);
984
985 struct vdsk_softc *sc = xsc;
986 void *rv = sc; /* just has to be !NULL */
987 int s;
988
989 s = splbio();
990 if (sc->sc_vio_state != VIO_ESTABLISHED ||
991 sc->sc_tx_cnt >= sc->sc_vd->vd_nentries)
992 rv = NULL;
993 else
994 sc->sc_tx_cnt++;
995 splx(s);
996
997 return (rv);
998 }
999
1000 void
vdsk_io_put(void * xsc,void * io)1001 vdsk_io_put(void *xsc, void *io)
1002 {
1003
1004 panic("%s: not verified yet", __FUNCTION__);
1005
1006 struct vdsk_softc *sc = xsc;
1007 int s;
1008
1009 #ifdef DIAGNOSTIC
1010 if (sc != io)
1011 panic("vsdk_io_put: unexpected io");
1012 #endif
1013
1014 s = splbio();
1015 sc->sc_tx_cnt--;
1016 splx(s);
1017 }
1018
1019 void
vdsk_scsi_cmd(struct vdsk_softc * sc,struct scsipi_xfer * xs)1020 vdsk_scsi_cmd(struct vdsk_softc *sc, struct scsipi_xfer *xs)
1021 {
1022 int timeout, s;
1023 int desc;
1024
1025 DPRINTF(("vdsk_scsi_cmd() opcode %x\n", xs->cmd->opcode));
1026
1027 switch (xs->cmd->opcode) {
1028
1029 case SCSI_READ_6_COMMAND:
1030 case READ_10:
1031 case READ_12:
1032 case READ_16:
1033 case SCSI_WRITE_6_COMMAND:
1034 case WRITE_10:
1035 case WRITE_12:
1036 case WRITE_16:
1037 case SCSI_SYNCHRONIZE_CACHE_10:
1038 break;
1039
1040 case INQUIRY:
1041 vdsk_scsi_inq(sc, xs);
1042 return;
1043
1044 case READ_CAPACITY_10:
1045 vdsk_scsi_capacity(sc, xs);
1046 return;
1047
1048 case READ_CAPACITY_16:
1049 vdsk_scsi_capacity16(sc, xs);
1050 return;
1051
1052 case SCSI_REPORT_LUNS:
1053 vdsk_scsi_report_luns(sc, xs);
1054 return;
1055
1056 case SCSI_TEST_UNIT_READY:
1057 case START_STOP:
1058 case SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL:
1059 case SCSI_MODE_SENSE_6:
1060 case SCSI_MAINTENANCE_IN:
1061 vdsk_scsi_done(xs, XS_NOERROR);
1062 return;
1063
1064 case SCSI_MODE_SENSE_10:
1065 case READ_TOC:
1066 vdsk_scsi_done(xs, XS_DRIVER_STUFFUP);
1067 return;
1068
1069 default:
1070 panic("%s unhandled cmd 0x%02x\n",
1071 __func__, xs->cmd->opcode);
1072 }
1073
1074 s = splbio();
1075 desc = vdsk_submit_cmd(sc, xs);
1076
1077 if (!ISSET(xs->xs_control, XS_CTL_POLL)) {
1078 splx(s);
1079 return;
1080 }
1081 timeout = 1000;
1082 do {
1083 if (sc->sc_vd->vd_desc[desc].hdr.dstate == VIO_DESC_DONE)
1084 break;
1085
1086 delay(1000);
1087 } while(--timeout > 0);
1088 if (sc->sc_vd->vd_desc[desc].hdr.dstate == VIO_DESC_DONE) {
1089 vdsk_complete_cmd(sc, xs, desc);
1090 } else {
1091 ldc_reset(&sc->sc_lc);
1092 vdsk_scsi_done(xs, XS_TIMEOUT);
1093 }
1094 splx(s);
1095 }
1096
1097 int
vdsk_submit_cmd(struct vdsk_softc * sc,struct scsipi_xfer * xs)1098 vdsk_submit_cmd(struct vdsk_softc *sc, struct scsipi_xfer *xs)
1099 {
1100 struct ldc_map *map = sc->sc_lm;
1101 struct vio_dring_msg dm;
1102 struct scsi_rw_6 *rw6;
1103 struct scsipi_rw_10 *rw10;
1104 struct scsipi_rw_12 *rw12;
1105 struct scsipi_rw_16 *rw16;
1106 u_int64_t lba = 0;
1107 uint8_t operation;
1108 vaddr_t va;
1109 paddr_t pa;
1110 psize_t nbytes;
1111 int len, ncookies;
1112 int desc;
1113
1114 switch (xs->cmd->opcode) {
1115
1116 case SCSI_READ_6_COMMAND:
1117 case READ_10:
1118 case READ_12:
1119 case READ_16:
1120 operation = VD_OP_BREAD;
1121 break;
1122
1123 case SCSI_WRITE_6_COMMAND:
1124 case WRITE_10:
1125 case WRITE_12:
1126 case WRITE_16:
1127 operation = VD_OP_BWRITE;
1128 break;
1129
1130 case SCSI_SYNCHRONIZE_CACHE_10:
1131 operation = VD_OP_FLUSH;
1132 break;
1133
1134 default:
1135 panic("%s unhandled cmd opcode 0x%x",
1136 __func__, xs->cmd->opcode);
1137 }
1138
1139 /*
1140 * READ/WRITE/SYNCHRONIZE commands. SYNCHRONIZE CACHE has same
1141 * layout as 10-byte READ/WRITE commands.
1142 */
1143 if (xs->cmdlen == 6) {
1144 rw6 = (struct scsi_rw_6 *)xs->cmd;
1145 lba = _3btol(rw6->addr) & (SRW_TOPADDR << 16 | 0xffff);
1146 } else if (xs->cmdlen == 10) {
1147 rw10 = (struct scsipi_rw_10 *)xs->cmd;
1148 lba = _4btol(rw10->addr);
1149 } else if (xs->cmdlen == 12) {
1150 rw12 = (struct scsipi_rw_12 *)xs->cmd;
1151 lba = _4btol(rw12->addr);
1152 } else if (xs->cmdlen == 16) {
1153 rw16 = (struct scsipi_rw_16 *)xs->cmd;
1154 lba = _8btol(rw16->addr);
1155 }
1156
1157 DPRINTF(("lba = %lu\n", lba));
1158
1159 desc = sc->sc_tx_prod;
1160 ncookies = 0;
1161 len = xs->datalen;
1162 va = (vaddr_t)xs->data;
1163 while (len > 0) {
1164 DPRINTF(("len = %u\n", len));
1165 KASSERT(ncookies < MAXPHYS / PAGE_SIZE);
1166 pa = 0;
1167 pmap_extract(pmap_kernel(), va, &pa);
1168 while (map->lm_slot[map->lm_next].entry != 0) {
1169 map->lm_next++;
1170 map->lm_next &= (map->lm_nentries - 1);
1171 }
1172 map->lm_slot[map->lm_next].entry = (pa & LDC_MTE_RA_MASK);
1173 map->lm_slot[map->lm_next].entry |= LDC_MTE_CPR | LDC_MTE_CPW;
1174 map->lm_slot[map->lm_next].entry |= LDC_MTE_IOR | LDC_MTE_IOW;
1175 map->lm_slot[map->lm_next].entry |= LDC_MTE_R | LDC_MTE_W;
1176 map->lm_count++;
1177
1178 nbytes = MIN(len, PAGE_SIZE - (pa & PAGE_MASK));
1179
1180 sc->sc_vd->vd_desc[desc].cookie[ncookies].addr =
1181 map->lm_next << PAGE_SHIFT | (pa & PAGE_MASK);
1182 sc->sc_vd->vd_desc[desc].cookie[ncookies].size = nbytes;
1183
1184 sc->sc_vsd[desc].vsd_map_idx[ncookies] = map->lm_next;
1185 va += nbytes;
1186 len -= nbytes;
1187 ncookies++;
1188 }
1189 if (ISSET(xs->xs_control, XS_CTL_POLL) == 0)
1190 sc->sc_vd->vd_desc[desc].hdr.ack = 1;
1191 else
1192 sc->sc_vd->vd_desc[desc].hdr.ack = 0;
1193 sc->sc_vd->vd_desc[desc].operation = operation;
1194 sc->sc_vd->vd_desc[desc].slice = VD_SLICE_NONE;
1195 sc->sc_vd->vd_desc[desc].status = 0xffffffff;
1196 sc->sc_vd->vd_desc[desc].offset = lba;
1197 sc->sc_vd->vd_desc[desc].size = xs->datalen;
1198 sc->sc_vd->vd_desc[desc].ncookies = ncookies;
1199
1200 membar_Sync();
1201
1202 sc->sc_vd->vd_desc[desc].hdr.dstate = VIO_DESC_READY;
1203
1204 sc->sc_vsd[desc].vsd_xs = xs;
1205 sc->sc_vsd[desc].vsd_ncookies = ncookies;
1206
1207 sc->sc_tx_prod++;
1208 sc->sc_tx_prod &= (sc->sc_vd->vd_nentries - 1);
1209
1210 bzero(&dm, sizeof(dm));
1211 dm.tag.type = VIO_TYPE_DATA;
1212 dm.tag.stype = VIO_SUBTYPE_INFO;
1213 dm.tag.stype_env = VIO_DRING_DATA;
1214 dm.tag.sid = sc->sc_local_sid;
1215 dm.seq_no = sc->sc_seq_no++;
1216 dm.dring_ident = sc->sc_dring_ident;
1217 dm.start_idx = dm.end_idx = desc;
1218 vdsk_sendmsg(sc, &dm, sizeof(dm));
1219
1220 return desc;
1221 }
1222
1223 void
vdsk_complete_cmd(struct vdsk_softc * sc,struct scsipi_xfer * xs,int desc)1224 vdsk_complete_cmd(struct vdsk_softc *sc, struct scsipi_xfer *xs, int desc)
1225 {
1226 struct ldc_map *map = sc->sc_lm;
1227 int cookie, idx;
1228 int error;
1229
1230 cookie = 0;
1231 while (cookie < sc->sc_vsd[desc].vsd_ncookies) {
1232 idx = sc->sc_vsd[desc].vsd_map_idx[cookie++];
1233 map->lm_slot[idx].entry = 0;
1234 map->lm_count--;
1235 }
1236
1237 error = XS_NOERROR;
1238 if (sc->sc_vd->vd_desc[desc].status != 0)
1239 error = XS_DRIVER_STUFFUP;
1240 xs->resid = xs->datalen -
1241 sc->sc_vd->vd_desc[desc].size;
1242
1243 /*
1244 * scsi_done() called by vdsk_scsi_done() requires
1245 * the kernel to be locked
1246 */
1247 KERNEL_LOCK(1, curlwp);
1248 vdsk_scsi_done(xs, error);
1249 KERNEL_UNLOCK_ONE(curlwp);
1250
1251 sc->sc_vd->vd_desc[desc].hdr.dstate = VIO_DESC_FREE;
1252
1253 }
1254
1255 void
vdsk_scsi_inq(struct vdsk_softc * sc,struct scsipi_xfer * xs)1256 vdsk_scsi_inq(struct vdsk_softc *sc, struct scsipi_xfer *xs)
1257 {
1258
1259 vdsk_scsi_inquiry(sc, xs);
1260 }
1261
1262 void
vdsk_scsi_inquiry(struct vdsk_softc * sc,struct scsipi_xfer * xs)1263 vdsk_scsi_inquiry(struct vdsk_softc *sc, struct scsipi_xfer *xs)
1264 {
1265
1266 struct scsipi_inquiry_data inq;
1267 char buf[5];
1268
1269 bzero(&inq, sizeof(inq));
1270
1271 switch (sc->sc_vd_mtype) {
1272 case VD_MEDIA_TYPE_CD:
1273 case VD_MEDIA_TYPE_DVD:
1274 inq.device = T_CDROM;
1275 break;
1276
1277 case VD_MEDIA_TYPE_FIXED:
1278 default:
1279 inq.device = T_DIRECT;
1280 break;
1281 }
1282
1283 inq.version = 0x05; /* SPC-3 */
1284 inq.response_format = 2;
1285 inq.additional_length = 32;
1286 inq.flags3 |= SID_CmdQue;
1287 bcopy("SUN ", inq.vendor, sizeof(inq.vendor));
1288 bcopy("Virtual Disk ", inq.product, sizeof(inq.product));
1289 snprintf(buf, sizeof(buf), "%u.%u ", sc->sc_major, sc->sc_minor);
1290 bcopy(buf, inq.revision, sizeof(inq.revision));
1291
1292 bcopy(&inq, xs->data, MIN(sizeof(inq), xs->datalen));
1293
1294 vdsk_scsi_done(xs, XS_NOERROR);
1295 }
1296
1297 void
vdsk_scsi_capacity(struct vdsk_softc * sc,struct scsipi_xfer * xs)1298 vdsk_scsi_capacity(struct vdsk_softc *sc, struct scsipi_xfer *xs)
1299 {
1300
1301 struct scsipi_read_capacity_10_data rcd;
1302 uint64_t capacity;
1303
1304 bzero(&rcd, sizeof(rcd));
1305
1306 capacity = sc->sc_vdisk_size - 1;
1307 if (capacity > 0xffffffff)
1308 capacity = 0xffffffff;
1309
1310 _lto4b(capacity, rcd.addr);
1311 _lto4b(sc->sc_vdisk_block_size, rcd.length);
1312
1313 DPRINTF(("%s() capacity %lu block size %u\n",
1314 __FUNCTION__, capacity, sc->sc_vdisk_block_size));
1315
1316 bcopy(&rcd, xs->data, MIN(sizeof(rcd), xs->datalen));
1317
1318 vdsk_scsi_done(xs, XS_NOERROR);
1319 }
1320
1321 void
vdsk_scsi_capacity16(struct vdsk_softc * sc,struct scsipi_xfer * xs)1322 vdsk_scsi_capacity16(struct vdsk_softc *sc, struct scsipi_xfer *xs)
1323 {
1324
1325 struct scsipi_read_capacity_16_data rcd;
1326
1327 bzero(&rcd, sizeof(rcd));
1328
1329 _lto8b(sc->sc_vdisk_size - 1, rcd.addr);
1330 _lto4b(sc->sc_vdisk_block_size, rcd.length);
1331
1332 DPRINTF(("%s() capacity %lu block size %u\n",
1333 __FUNCTION__, capacity, sc->sc_vdisk_block_size));
1334
1335 bcopy(&rcd, xs->data, MIN(sizeof(rcd), xs->datalen));
1336
1337 vdsk_scsi_done(xs, XS_NOERROR);
1338 }
1339
1340 void
vdsk_scsi_report_luns(struct vdsk_softc * sc,struct scsipi_xfer * xs)1341 vdsk_scsi_report_luns(struct vdsk_softc *sc, struct scsipi_xfer *xs)
1342 {
1343 vdsk_scsi_done(xs, XS_NOERROR);
1344 }
1345
1346 void
vdsk_scsi_done(struct scsipi_xfer * xs,int error)1347 vdsk_scsi_done(struct scsipi_xfer *xs, int error)
1348 {
1349
1350 xs->error = error;
1351
1352 scsipi_done(xs);
1353 }
1354