1 /*-
2 * Generic driver for the BusLogic MultiMaster SCSI host adapters
3 * Product specific probe and attach routines can be found in:
4 * sys/dev/buslogic/bt_isa.c BT-54X, BT-445 cards
5 * sys/dev/buslogic/bt_mca.c BT-64X, SDC3211B, SDC3211F
6 * sys/dev/buslogic/bt_eisa.c BT-74X, BT-75x cards, SDC3222F
7 * sys/dev/buslogic/bt_pci.c BT-946, BT-948, BT-956, BT-958 cards
8 *
9 * Copyright (c) 1998, 1999 Justin T. Gibbs.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification, immediately at the beginning of the file.
18 * 2. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
25 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36
37 /*
38 * Special thanks to Leonard N. Zubkoff for writing such a complete and
39 * well documented Mylex/BusLogic MultiMaster driver for Linux. Support
40 * in this driver for the wide range of MultiMaster controllers and
41 * firmware revisions, with their otherwise undocumented quirks, would not
42 * have been possible without his efforts.
43 */
44
45 #include <sys/param.h>
46 #include <sys/conf.h>
47 #include <sys/systm.h>
48 #include <sys/malloc.h>
49 #include <sys/kernel.h>
50 #include <sys/lock.h>
51 #include <sys/module.h>
52 #include <sys/mutex.h>
53 #include <sys/sysctl.h>
54 #include <sys/bus.h>
55
56 #include <machine/bus.h>
57 #include <sys/rman.h>
58
59 #include <cam/cam.h>
60 #include <cam/cam_ccb.h>
61 #include <cam/cam_sim.h>
62 #include <cam/cam_xpt_sim.h>
63 #include <cam/cam_debug.h>
64
65 #include <cam/scsi/scsi_message.h>
66
67 #include <vm/vm.h>
68 #include <vm/pmap.h>
69
70 #include <dev/buslogic/btreg.h>
71
72 /* MailBox Management functions */
73 static __inline void btnextinbox(struct bt_softc *bt);
74 static __inline void btnextoutbox(struct bt_softc *bt);
75
76 static __inline void
btnextinbox(struct bt_softc * bt)77 btnextinbox(struct bt_softc *bt)
78 {
79 if (bt->cur_inbox == bt->last_inbox)
80 bt->cur_inbox = bt->in_boxes;
81 else
82 bt->cur_inbox++;
83 }
84
85 static __inline void
btnextoutbox(struct bt_softc * bt)86 btnextoutbox(struct bt_softc *bt)
87 {
88 if (bt->cur_outbox == bt->last_outbox)
89 bt->cur_outbox = bt->out_boxes;
90 else
91 bt->cur_outbox++;
92 }
93
94 /* CCB Mangement functions */
95 static __inline u_int32_t btccbvtop(struct bt_softc *bt,
96 struct bt_ccb *bccb);
97 static __inline struct bt_ccb* btccbptov(struct bt_softc *bt,
98 u_int32_t ccb_addr);
99 static __inline u_int32_t btsensepaddr(struct bt_softc *bt,
100 struct bt_ccb *bccb);
101 static __inline struct scsi_sense_data* btsensevaddr(struct bt_softc *bt,
102 struct bt_ccb *bccb);
103
104 static __inline u_int32_t
btccbvtop(struct bt_softc * bt,struct bt_ccb * bccb)105 btccbvtop(struct bt_softc *bt, struct bt_ccb *bccb)
106 {
107 return (bt->bt_ccb_physbase
108 + (u_int32_t)((caddr_t)bccb - (caddr_t)bt->bt_ccb_array));
109 }
110
111 static __inline struct bt_ccb *
btccbptov(struct bt_softc * bt,u_int32_t ccb_addr)112 btccbptov(struct bt_softc *bt, u_int32_t ccb_addr)
113 {
114 return (bt->bt_ccb_array +
115 ((struct bt_ccb*)(uintptr_t)ccb_addr - (struct bt_ccb*)(uintptr_t)bt->bt_ccb_physbase));
116 }
117
118 static __inline u_int32_t
btsensepaddr(struct bt_softc * bt,struct bt_ccb * bccb)119 btsensepaddr(struct bt_softc *bt, struct bt_ccb *bccb)
120 {
121 u_int index;
122
123 index = (u_int)(bccb - bt->bt_ccb_array);
124 return (bt->sense_buffers_physbase
125 + (index * sizeof(struct scsi_sense_data)));
126 }
127
128 static __inline struct scsi_sense_data *
btsensevaddr(struct bt_softc * bt,struct bt_ccb * bccb)129 btsensevaddr(struct bt_softc *bt, struct bt_ccb *bccb)
130 {
131 u_int index;
132
133 index = (u_int)(bccb - bt->bt_ccb_array);
134 return (bt->sense_buffers + index);
135 }
136
137 static __inline struct bt_ccb* btgetccb(struct bt_softc *bt);
138 static __inline void btfreeccb(struct bt_softc *bt,
139 struct bt_ccb *bccb);
140 static void btallocccbs(struct bt_softc *bt);
141 static bus_dmamap_callback_t btexecuteccb;
142 static void btdone(struct bt_softc *bt, struct bt_ccb *bccb,
143 bt_mbi_comp_code_t comp_code);
144 static void bt_intr_locked(struct bt_softc *bt);
145
146 /* Host adapter command functions */
147 static int btreset(struct bt_softc* bt, int hard_reset);
148
149 /* Initialization functions */
150 static int btinitmboxes(struct bt_softc *bt);
151 static bus_dmamap_callback_t btmapmboxes;
152 static bus_dmamap_callback_t btmapccbs;
153 static bus_dmamap_callback_t btmapsgs;
154
155 /* Transfer Negotiation Functions */
156 static void btfetchtransinfo(struct bt_softc *bt,
157 struct ccb_trans_settings *cts);
158
159 /* CAM SIM entry points */
160 #define ccb_bccb_ptr spriv_ptr0
161 #define ccb_bt_ptr spriv_ptr1
162 static void btaction(struct cam_sim *sim, union ccb *ccb);
163 static void btpoll(struct cam_sim *sim);
164
165 /* Our timeout handler */
166 static void bttimeout(void *arg);
167
168 /*
169 * XXX
170 * Do our own re-probe protection until a configuration
171 * manager can do it for us. This ensures that we don't
172 * reprobe a card already found by the EISA or PCI probes.
173 */
174 struct bt_isa_port bt_isa_ports[] =
175 {
176 { 0x130, 0, 4 },
177 { 0x134, 0, 5 },
178 { 0x230, 0, 2 },
179 { 0x234, 0, 3 },
180 { 0x330, 0, 0 },
181 { 0x334, 0, 1 }
182 };
183
184 /*
185 * I/O ports listed in the order enumerated by the
186 * card for certain op codes.
187 */
188 u_int16_t bt_board_ports[] =
189 {
190 0x330,
191 0x334,
192 0x230,
193 0x234,
194 0x130,
195 0x134
196 };
197
198 /* Exported functions */
199 void
bt_init_softc(device_t dev,struct resource * port,struct resource * irq,struct resource * drq)200 bt_init_softc(device_t dev, struct resource *port,
201 struct resource *irq, struct resource *drq)
202 {
203 struct bt_softc *bt = device_get_softc(dev);
204
205 SLIST_INIT(&bt->free_bt_ccbs);
206 LIST_INIT(&bt->pending_ccbs);
207 SLIST_INIT(&bt->sg_maps);
208 bt->dev = dev;
209 bt->port = port;
210 bt->irq = irq;
211 bt->drq = drq;
212 mtx_init(&bt->lock, "bt", NULL, MTX_DEF);
213 }
214
215 void
bt_free_softc(device_t dev)216 bt_free_softc(device_t dev)
217 {
218 struct bt_softc *bt = device_get_softc(dev);
219
220 switch (bt->init_level) {
221 default:
222 case 11:
223 bus_dmamap_unload(bt->sense_dmat, bt->sense_dmamap);
224 case 10:
225 bus_dmamem_free(bt->sense_dmat, bt->sense_buffers,
226 bt->sense_dmamap);
227 case 9:
228 bus_dma_tag_destroy(bt->sense_dmat);
229 case 8:
230 {
231 struct sg_map_node *sg_map;
232
233 while ((sg_map = SLIST_FIRST(&bt->sg_maps))!= NULL) {
234 SLIST_REMOVE_HEAD(&bt->sg_maps, links);
235 bus_dmamap_unload(bt->sg_dmat,
236 sg_map->sg_dmamap);
237 bus_dmamem_free(bt->sg_dmat, sg_map->sg_vaddr,
238 sg_map->sg_dmamap);
239 free(sg_map, M_DEVBUF);
240 }
241 bus_dma_tag_destroy(bt->sg_dmat);
242 }
243 case 7:
244 bus_dmamap_unload(bt->ccb_dmat, bt->ccb_dmamap);
245 /* FALLTHROUGH */
246 case 6:
247 bus_dmamem_free(bt->ccb_dmat, bt->bt_ccb_array,
248 bt->ccb_dmamap);
249 /* FALLTHROUGH */
250 case 5:
251 bus_dma_tag_destroy(bt->ccb_dmat);
252 /* FALLTHROUGH */
253 case 4:
254 bus_dmamap_unload(bt->mailbox_dmat, bt->mailbox_dmamap);
255 /* FALLTHROUGH */
256 case 3:
257 bus_dmamem_free(bt->mailbox_dmat, bt->in_boxes,
258 bt->mailbox_dmamap);
259 /* FALLTHROUGH */
260 case 2:
261 bus_dma_tag_destroy(bt->buffer_dmat);
262 /* FALLTHROUGH */
263 case 1:
264 bus_dma_tag_destroy(bt->mailbox_dmat);
265 /* FALLTHROUGH */
266 case 0:
267 break;
268 }
269 mtx_destroy(&bt->lock);
270 }
271
272 int
bt_port_probe(device_t dev,struct bt_probe_info * info)273 bt_port_probe(device_t dev, struct bt_probe_info *info)
274 {
275 struct bt_softc *bt = device_get_softc(dev);
276 config_data_t config_data;
277 int error;
278
279 /* See if there is really a card present */
280 if (bt_probe(dev) || bt_fetch_adapter_info(dev))
281 return(1);
282
283 /*
284 * Determine our IRQ, and DMA settings and
285 * export them to the configuration system.
286 */
287 mtx_lock(&bt->lock);
288 error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
289 (u_int8_t*)&config_data, sizeof(config_data),
290 DEFAULT_CMD_TIMEOUT);
291 mtx_unlock(&bt->lock);
292 if (error != 0) {
293 printf("bt_port_probe: Could not determine IRQ or DMA "
294 "settings for adapter.\n");
295 return (1);
296 }
297
298 if (bt->model[0] == '5') {
299 /* DMA settings only make sense for ISA cards */
300 switch (config_data.dma_chan) {
301 case DMA_CHAN_5:
302 info->drq = 5;
303 break;
304 case DMA_CHAN_6:
305 info->drq = 6;
306 break;
307 case DMA_CHAN_7:
308 info->drq = 7;
309 break;
310 default:
311 printf("bt_port_probe: Invalid DMA setting "
312 "detected for adapter.\n");
313 return (1);
314 }
315 } else {
316 /* VL/EISA/PCI DMA */
317 info->drq = -1;
318 }
319 switch (config_data.irq) {
320 case IRQ_9:
321 case IRQ_10:
322 case IRQ_11:
323 case IRQ_12:
324 case IRQ_14:
325 case IRQ_15:
326 info->irq = ffs(config_data.irq) + 8;
327 break;
328 default:
329 printf("bt_port_probe: Invalid IRQ setting %x"
330 "detected for adapter.\n", config_data.irq);
331 return (1);
332 }
333 return (0);
334 }
335
336 /*
337 * Probe the adapter and verify that the card is a BusLogic.
338 */
339 int
bt_probe(device_t dev)340 bt_probe(device_t dev)
341 {
342 struct bt_softc *bt = device_get_softc(dev);
343 esetup_info_data_t esetup_info;
344 u_int status;
345 u_int intstat;
346 u_int geometry;
347 int error;
348 u_int8_t param;
349
350 /*
351 * See if the three I/O ports look reasonable.
352 * Touch the minimal number of registers in the
353 * failure case.
354 */
355 status = bt_inb(bt, STATUS_REG);
356 if ((status == 0)
357 || (status & (DIAG_ACTIVE|CMD_REG_BUSY|
358 STATUS_REG_RSVD|CMD_INVALID)) != 0) {
359 if (bootverbose)
360 device_printf(dev, "Failed Status Reg Test - %x\n",
361 status);
362 return (ENXIO);
363 }
364
365 intstat = bt_inb(bt, INTSTAT_REG);
366 if ((intstat & INTSTAT_REG_RSVD) != 0) {
367 device_printf(dev, "Failed Intstat Reg Test\n");
368 return (ENXIO);
369 }
370
371 geometry = bt_inb(bt, GEOMETRY_REG);
372 if (geometry == 0xFF) {
373 if (bootverbose)
374 device_printf(dev, "Failed Geometry Reg Test\n");
375 return (ENXIO);
376 }
377
378 /*
379 * Looking good so far. Final test is to reset the
380 * adapter and attempt to fetch the extended setup
381 * information. This should filter out all 1542 cards.
382 */
383 mtx_lock(&bt->lock);
384 if ((error = btreset(bt, /*hard_reset*/TRUE)) != 0) {
385 mtx_unlock(&bt->lock);
386 if (bootverbose)
387 device_printf(dev, "Failed Reset\n");
388 return (ENXIO);
389 }
390
391 param = sizeof(esetup_info);
392 error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, ¶m, /*parmlen*/1,
393 (u_int8_t*)&esetup_info, sizeof(esetup_info),
394 DEFAULT_CMD_TIMEOUT);
395 mtx_unlock(&bt->lock);
396 if (error != 0) {
397 return (ENXIO);
398 }
399
400 return (0);
401 }
402
403 /*
404 * Pull the boards setup information and record it in our softc.
405 */
406 int
bt_fetch_adapter_info(device_t dev)407 bt_fetch_adapter_info(device_t dev)
408 {
409 struct bt_softc *bt = device_get_softc(dev);
410 board_id_data_t board_id;
411 esetup_info_data_t esetup_info;
412 config_data_t config_data;
413 int error;
414 u_int8_t length_param;
415
416 /* First record the firmware version */
417 mtx_lock(&bt->lock);
418 error = bt_cmd(bt, BOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0,
419 (u_int8_t*)&board_id, sizeof(board_id),
420 DEFAULT_CMD_TIMEOUT);
421 if (error != 0) {
422 mtx_unlock(&bt->lock);
423 device_printf(dev, "bt_fetch_adapter_info - Failed Get Board Info\n");
424 return (error);
425 }
426 bt->firmware_ver[0] = board_id.firmware_rev_major;
427 bt->firmware_ver[1] = '.';
428 bt->firmware_ver[2] = board_id.firmware_rev_minor;
429 bt->firmware_ver[3] = '\0';
430
431 /*
432 * Depending on the firmware major and minor version,
433 * we may be able to fetch additional minor version info.
434 */
435 if (bt->firmware_ver[0] > '0') {
436
437 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_3DIG, NULL, /*parmlen*/0,
438 (u_int8_t*)&bt->firmware_ver[3], 1,
439 DEFAULT_CMD_TIMEOUT);
440 if (error != 0) {
441 mtx_unlock(&bt->lock);
442 device_printf(dev,
443 "bt_fetch_adapter_info - Failed Get "
444 "Firmware 3rd Digit\n");
445 return (error);
446 }
447 if (bt->firmware_ver[3] == ' ')
448 bt->firmware_ver[3] = '\0';
449 bt->firmware_ver[4] = '\0';
450 }
451
452 if (strcmp(bt->firmware_ver, "3.3") >= 0) {
453
454 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_4DIG, NULL, /*parmlen*/0,
455 (u_int8_t*)&bt->firmware_ver[4], 1,
456 DEFAULT_CMD_TIMEOUT);
457 if (error != 0) {
458 mtx_unlock(&bt->lock);
459 device_printf(dev,
460 "bt_fetch_adapter_info - Failed Get "
461 "Firmware 4th Digit\n");
462 return (error);
463 }
464 if (bt->firmware_ver[4] == ' ')
465 bt->firmware_ver[4] = '\0';
466 bt->firmware_ver[5] = '\0';
467 }
468
469 /*
470 * Some boards do not handle the "recently documented"
471 * Inquire Board Model Number command correctly or do not give
472 * exact information. Use the Firmware and Extended Setup
473 * information in these cases to come up with the right answer.
474 * The major firmware revision number indicates:
475 *
476 * 5.xx BusLogic "W" Series Host Adapters:
477 * BT-948/958/958D
478 * 4.xx BusLogic "C" Series Host Adapters:
479 * BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
480 * 3.xx BusLogic "S" Series Host Adapters:
481 * BT-747S/747D/757S/757D/445S/545S/542D
482 * BT-542B/742A (revision H)
483 * 2.xx BusLogic "A" Series Host Adapters:
484 * BT-542B/742A (revision G and below)
485 * 0.xx AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
486 */
487 length_param = sizeof(esetup_info);
488 error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &length_param, /*parmlen*/1,
489 (u_int8_t*)&esetup_info, sizeof(esetup_info),
490 DEFAULT_CMD_TIMEOUT);
491 if (error != 0) {
492 mtx_unlock(&bt->lock);
493 return (error);
494 }
495
496 bt->bios_addr = esetup_info.bios_addr << 12;
497
498 bt->mailbox_addrlimit = BUS_SPACE_MAXADDR;
499 if (esetup_info.bus_type == 'A'
500 && bt->firmware_ver[0] == '2') {
501 snprintf(bt->model, sizeof(bt->model), "542B");
502 } else if (esetup_info.bus_type == 'E'
503 && bt->firmware_ver[0] == '2') {
504
505 /*
506 * The 742A seems to object if its mailboxes are
507 * allocated above the 16MB mark.
508 */
509 bt->mailbox_addrlimit = BUS_SPACE_MAXADDR_24BIT;
510 snprintf(bt->model, sizeof(bt->model), "742A");
511 } else if (esetup_info.bus_type == 'E'
512 && bt->firmware_ver[0] == '0') {
513 /* AMI FastDisk EISA Series 441 0.x */
514 snprintf(bt->model, sizeof(bt->model), "747A");
515 } else {
516 ha_model_data_t model_data;
517 int i;
518
519 length_param = sizeof(model_data);
520 error = bt_cmd(bt, BOP_INQUIRE_MODEL, &length_param, 1,
521 (u_int8_t*)&model_data, sizeof(model_data),
522 DEFAULT_CMD_TIMEOUT);
523 if (error != 0) {
524 mtx_unlock(&bt->lock);
525 device_printf(dev,
526 "bt_fetch_adapter_info - Failed Inquire "
527 "Model Number\n");
528 return (error);
529 }
530 for (i = 0; i < sizeof(model_data.ascii_model); i++) {
531 bt->model[i] = model_data.ascii_model[i];
532 if (bt->model[i] == ' ')
533 break;
534 }
535 bt->model[i] = '\0';
536 }
537
538 bt->level_trigger_ints = esetup_info.level_trigger_ints ? 1 : 0;
539
540 /* SG element limits */
541 bt->max_sg = esetup_info.max_sg;
542
543 /* Set feature flags */
544 bt->wide_bus = esetup_info.wide_bus;
545 bt->diff_bus = esetup_info.diff_bus;
546 bt->ultra_scsi = esetup_info.ultra_scsi;
547
548 if ((bt->firmware_ver[0] == '5')
549 || (bt->firmware_ver[0] == '4' && bt->wide_bus))
550 bt->extended_lun = TRUE;
551
552 bt->strict_rr = (strcmp(bt->firmware_ver, "3.31") >= 0);
553
554 bt->extended_trans =
555 ((bt_inb(bt, GEOMETRY_REG) & EXTENDED_TRANSLATION) != 0);
556
557 /*
558 * Determine max CCB count and whether tagged queuing is
559 * available based on controller type. Tagged queuing
560 * only works on 'W' series adapters, 'C' series adapters
561 * with firmware of rev 4.42 and higher, and 'S' series
562 * adapters with firmware of rev 3.35 and higher. The
563 * maximum CCB counts are as follows:
564 *
565 * 192 BT-948/958/958D
566 * 100 BT-946C/956C/956CD/747C/757C/757CD/445C
567 * 50 BT-545C/540CF
568 * 30 BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
569 */
570 if (bt->firmware_ver[0] == '5') {
571 bt->max_ccbs = 192;
572 bt->tag_capable = TRUE;
573 } else if (bt->firmware_ver[0] == '4') {
574 if (bt->model[0] == '5')
575 bt->max_ccbs = 50;
576 else
577 bt->max_ccbs = 100;
578 bt->tag_capable = (strcmp(bt->firmware_ver, "4.22") >= 0);
579 } else {
580 bt->max_ccbs = 30;
581 if (bt->firmware_ver[0] == '3'
582 && (strcmp(bt->firmware_ver, "3.35") >= 0))
583 bt->tag_capable = TRUE;
584 else
585 bt->tag_capable = FALSE;
586 }
587
588 if (bt->tag_capable != FALSE)
589 bt->tags_permitted = ALL_TARGETS;
590
591 /* Determine Sync/Wide/Disc settings */
592 if (bt->firmware_ver[0] >= '4') {
593 auto_scsi_data_t auto_scsi_data;
594 fetch_lram_params_t fetch_lram_params;
595 int error;
596
597 /*
598 * These settings are stored in the
599 * AutoSCSI data in LRAM of 'W' and 'C'
600 * adapters.
601 */
602 fetch_lram_params.offset = AUTO_SCSI_BYTE_OFFSET;
603 fetch_lram_params.response_len = sizeof(auto_scsi_data);
604 error = bt_cmd(bt, BOP_FETCH_LRAM,
605 (u_int8_t*)&fetch_lram_params,
606 sizeof(fetch_lram_params),
607 (u_int8_t*)&auto_scsi_data,
608 sizeof(auto_scsi_data), DEFAULT_CMD_TIMEOUT);
609
610 if (error != 0) {
611 mtx_unlock(&bt->lock);
612 device_printf(dev,
613 "bt_fetch_adapter_info - Failed "
614 "Get Auto SCSI Info\n");
615 return (error);
616 }
617
618 bt->disc_permitted = auto_scsi_data.low_disc_permitted
619 | (auto_scsi_data.high_disc_permitted << 8);
620 bt->sync_permitted = auto_scsi_data.low_sync_permitted
621 | (auto_scsi_data.high_sync_permitted << 8);
622 bt->fast_permitted = auto_scsi_data.low_fast_permitted
623 | (auto_scsi_data.high_fast_permitted << 8);
624 bt->ultra_permitted = auto_scsi_data.low_ultra_permitted
625 | (auto_scsi_data.high_ultra_permitted << 8);
626 bt->wide_permitted = auto_scsi_data.low_wide_permitted
627 | (auto_scsi_data.high_wide_permitted << 8);
628
629 if (bt->ultra_scsi == FALSE)
630 bt->ultra_permitted = 0;
631
632 if (bt->wide_bus == FALSE)
633 bt->wide_permitted = 0;
634 } else {
635 /*
636 * 'S' and 'A' series have this information in the setup
637 * information structure.
638 */
639 setup_data_t setup_info;
640
641 length_param = sizeof(setup_info);
642 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &length_param,
643 /*paramlen*/1, (u_int8_t*)&setup_info,
644 sizeof(setup_info), DEFAULT_CMD_TIMEOUT);
645
646 if (error != 0) {
647 mtx_unlock(&bt->lock);
648 device_printf(dev,
649 "bt_fetch_adapter_info - Failed "
650 "Get Setup Info\n");
651 return (error);
652 }
653
654 if (setup_info.initiate_sync != 0) {
655 bt->sync_permitted = ALL_TARGETS;
656
657 if (bt->model[0] == '7') {
658 if (esetup_info.sync_neg10MB != 0)
659 bt->fast_permitted = ALL_TARGETS;
660 if (strcmp(bt->model, "757") == 0)
661 bt->wide_permitted = ALL_TARGETS;
662 }
663 }
664 bt->disc_permitted = ALL_TARGETS;
665 }
666
667 /* We need as many mailboxes as we can have ccbs */
668 bt->num_boxes = bt->max_ccbs;
669
670 /* Determine our SCSI ID */
671
672 error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
673 (u_int8_t*)&config_data, sizeof(config_data),
674 DEFAULT_CMD_TIMEOUT);
675 mtx_unlock(&bt->lock);
676 if (error != 0) {
677 device_printf(dev,
678 "bt_fetch_adapter_info - Failed Get Config\n");
679 return (error);
680 }
681 bt->scsi_id = config_data.scsi_id;
682
683 return (0);
684 }
685
686 /*
687 * Start the board, ready for normal operation
688 */
689 int
bt_init(device_t dev)690 bt_init(device_t dev)
691 {
692 struct bt_softc *bt = device_get_softc(dev);
693
694 /* Announce the Adapter */
695 device_printf(dev, "BT-%s FW Rev. %s ", bt->model, bt->firmware_ver);
696
697 if (bt->ultra_scsi != 0)
698 printf("Ultra ");
699
700 if (bt->wide_bus != 0)
701 printf("Wide ");
702 else
703 printf("Narrow ");
704
705 if (bt->diff_bus != 0)
706 printf("Diff ");
707
708 printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", bt->scsi_id,
709 bt->max_ccbs);
710
711 /*
712 * Create our DMA tags. These tags define the kinds of device
713 * accessible memory allocations and memory mappings we will
714 * need to perform during normal operation.
715 *
716 * Unless we need to further restrict the allocation, we rely
717 * on the restrictions of the parent dmat, hence the common
718 * use of MAXADDR and MAXSIZE.
719 */
720
721 /* DMA tag for mapping buffers into device visible space. */
722 if (bus_dma_tag_create( /* parent */ bt->parent_dmat,
723 /* alignment */ 1,
724 /* boundary */ 0,
725 /* lowaddr */ BUS_SPACE_MAXADDR,
726 /* highaddr */ BUS_SPACE_MAXADDR,
727 /* filter */ NULL,
728 /* filterarg */ NULL,
729 /* maxsize */ DFLTPHYS,
730 /* nsegments */ BT_NSEG,
731 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
732 /* flags */ BUS_DMA_ALLOCNOW,
733 /* lockfunc */ busdma_lock_mutex,
734 /* lockarg */ &bt->lock,
735 &bt->buffer_dmat) != 0) {
736 goto error_exit;
737 }
738
739 bt->init_level++;
740 /* DMA tag for our mailboxes */
741 if (bus_dma_tag_create( /* parent */ bt->parent_dmat,
742 /* alignment */ 1,
743 /* boundary */ 0,
744 /* lowaddr */ bt->mailbox_addrlimit,
745 /* highaddr */ BUS_SPACE_MAXADDR,
746 /* filter */ NULL,
747 /* filterarg */ NULL,
748 /* maxsize */ bt->num_boxes *
749 (sizeof(bt_mbox_in_t) +
750 sizeof(bt_mbox_out_t)),
751 /* nsegments */ 1,
752 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
753 /* flags */ 0,
754 /* lockfunc */ NULL,
755 /* lockarg */ NULL,
756 &bt->mailbox_dmat) != 0) {
757 goto error_exit;
758 }
759
760 bt->init_level++;
761
762 /* Allocation for our mailboxes */
763 if (bus_dmamem_alloc(bt->mailbox_dmat, (void **)&bt->out_boxes,
764 BUS_DMA_NOWAIT, &bt->mailbox_dmamap) != 0) {
765 goto error_exit;
766 }
767
768 bt->init_level++;
769
770 /* And permanently map them */
771 bus_dmamap_load(bt->mailbox_dmat, bt->mailbox_dmamap,
772 bt->out_boxes,
773 bt->num_boxes * (sizeof(bt_mbox_in_t)
774 + sizeof(bt_mbox_out_t)),
775 btmapmboxes, bt, /*flags*/0);
776
777 bt->init_level++;
778
779 bt->in_boxes = (bt_mbox_in_t *)&bt->out_boxes[bt->num_boxes];
780
781 mtx_lock(&bt->lock);
782 btinitmboxes(bt);
783 mtx_unlock(&bt->lock);
784
785 /* DMA tag for our ccb structures */
786 if (bus_dma_tag_create( /* parent */ bt->parent_dmat,
787 /* alignment */ 1,
788 /* boundary */ 0,
789 /* lowaddr */ BUS_SPACE_MAXADDR,
790 /* highaddr */ BUS_SPACE_MAXADDR,
791 /* filter */ NULL,
792 /* filterarg */ NULL,
793 /* maxsize */ bt->max_ccbs *
794 sizeof(struct bt_ccb),
795 /* nsegments */ 1,
796 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
797 /* flags */ 0,
798 /* lockfunc */ NULL,
799 /* lockarg */ NULL,
800 &bt->ccb_dmat) != 0) {
801 goto error_exit;
802 }
803
804 bt->init_level++;
805
806 /* Allocation for our ccbs */
807 if (bus_dmamem_alloc(bt->ccb_dmat, (void **)&bt->bt_ccb_array,
808 BUS_DMA_NOWAIT, &bt->ccb_dmamap) != 0) {
809 goto error_exit;
810 }
811
812 bt->init_level++;
813
814 /* And permanently map them */
815 bus_dmamap_load(bt->ccb_dmat, bt->ccb_dmamap,
816 bt->bt_ccb_array,
817 bt->max_ccbs * sizeof(struct bt_ccb),
818 btmapccbs, bt, /*flags*/0);
819
820 bt->init_level++;
821
822 /* DMA tag for our S/G structures. We allocate in page sized chunks */
823 if (bus_dma_tag_create( /* parent */ bt->parent_dmat,
824 /* alignment */ 1,
825 /* boundary */ 0,
826 /* lowaddr */ BUS_SPACE_MAXADDR,
827 /* highaddr */ BUS_SPACE_MAXADDR,
828 /* filter */ NULL,
829 /* filterarg */ NULL,
830 /* maxsize */ PAGE_SIZE,
831 /* nsegments */ 1,
832 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
833 /* flags */ 0,
834 /* lockfunc */ NULL,
835 /* lockarg */ NULL,
836 &bt->sg_dmat) != 0) {
837 goto error_exit;
838 }
839
840 bt->init_level++;
841
842 /* Perform initial CCB allocation */
843 bzero(bt->bt_ccb_array, bt->max_ccbs * sizeof(struct bt_ccb));
844 btallocccbs(bt);
845
846 if (bt->num_ccbs == 0) {
847 device_printf(dev,
848 "bt_init - Unable to allocate initial ccbs\n");
849 goto error_exit;
850 }
851
852 /*
853 * Note that we are going and return (to attach)
854 */
855 return 0;
856
857 error_exit:
858
859 return (ENXIO);
860 }
861
862 int
bt_attach(device_t dev)863 bt_attach(device_t dev)
864 {
865 struct bt_softc *bt = device_get_softc(dev);
866 int tagged_dev_openings;
867 struct cam_devq *devq;
868 int error;
869
870 /*
871 * We reserve 1 ccb for error recovery, so don't
872 * tell the XPT about it.
873 */
874 if (bt->tag_capable != 0)
875 tagged_dev_openings = bt->max_ccbs - 1;
876 else
877 tagged_dev_openings = 0;
878
879 /*
880 * Create the device queue for our SIM.
881 */
882 devq = cam_simq_alloc(bt->max_ccbs - 1);
883 if (devq == NULL)
884 return (ENOMEM);
885
886 /*
887 * Construct our SIM entry
888 */
889 bt->sim = cam_sim_alloc(btaction, btpoll, "bt", bt,
890 device_get_unit(bt->dev), &bt->lock, 2, tagged_dev_openings, devq);
891 if (bt->sim == NULL) {
892 cam_simq_free(devq);
893 return (ENOMEM);
894 }
895
896 mtx_lock(&bt->lock);
897 if (xpt_bus_register(bt->sim, dev, 0) != CAM_SUCCESS) {
898 cam_sim_free(bt->sim, /*free_devq*/TRUE);
899 mtx_unlock(&bt->lock);
900 return (ENXIO);
901 }
902
903 if (xpt_create_path(&bt->path, /*periph*/NULL,
904 cam_sim_path(bt->sim), CAM_TARGET_WILDCARD,
905 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
906 xpt_bus_deregister(cam_sim_path(bt->sim));
907 cam_sim_free(bt->sim, /*free_devq*/TRUE);
908 mtx_unlock(&bt->lock);
909 return (ENXIO);
910 }
911 mtx_unlock(&bt->lock);
912
913 /*
914 * Setup interrupt.
915 */
916 error = bus_setup_intr(dev, bt->irq, INTR_TYPE_CAM | INTR_ENTROPY |
917 INTR_MPSAFE, NULL, bt_intr, bt, &bt->ih);
918 if (error) {
919 device_printf(dev, "bus_setup_intr() failed: %d\n", error);
920 return (error);
921 }
922
923 return (0);
924 }
925
926 int
bt_check_probed_iop(u_int ioport)927 bt_check_probed_iop(u_int ioport)
928 {
929 u_int i;
930
931 for (i = 0; i < BT_NUM_ISAPORTS; i++) {
932 if (bt_isa_ports[i].addr == ioport) {
933 if (bt_isa_ports[i].probed != 0)
934 return (1);
935 else {
936 return (0);
937 }
938 }
939 }
940 return (1);
941 }
942
943 void
bt_mark_probed_bio(isa_compat_io_t port)944 bt_mark_probed_bio(isa_compat_io_t port)
945 {
946 if (port < BIO_DISABLED)
947 bt_mark_probed_iop(bt_board_ports[port]);
948 }
949
950 void
bt_mark_probed_iop(u_int ioport)951 bt_mark_probed_iop(u_int ioport)
952 {
953 u_int i;
954
955 for (i = 0; i < BT_NUM_ISAPORTS; i++) {
956 if (ioport == bt_isa_ports[i].addr) {
957 bt_isa_ports[i].probed = 1;
958 break;
959 }
960 }
961 }
962
963 void
bt_find_probe_range(int ioport,int * port_index,int * max_port_index)964 bt_find_probe_range(int ioport, int *port_index, int *max_port_index)
965 {
966 if (ioport > 0) {
967 int i;
968
969 for (i = 0;i < BT_NUM_ISAPORTS; i++)
970 if (ioport <= bt_isa_ports[i].addr)
971 break;
972 if ((i >= BT_NUM_ISAPORTS)
973 || (ioport != bt_isa_ports[i].addr)) {
974 printf(
975 "bt_find_probe_range: Invalid baseport of 0x%x specified.\n"
976 "bt_find_probe_range: Nearest valid baseport is 0x%x.\n"
977 "bt_find_probe_range: Failing probe.\n",
978 ioport,
979 (i < BT_NUM_ISAPORTS)
980 ? bt_isa_ports[i].addr
981 : bt_isa_ports[BT_NUM_ISAPORTS - 1].addr);
982 *port_index = *max_port_index = -1;
983 return;
984 }
985 *port_index = *max_port_index = bt_isa_ports[i].bio;
986 } else {
987 *port_index = 0;
988 *max_port_index = BT_NUM_ISAPORTS - 1;
989 }
990 }
991
992 int
bt_iop_from_bio(isa_compat_io_t bio_index)993 bt_iop_from_bio(isa_compat_io_t bio_index)
994 {
995 if (bio_index < BT_NUM_ISAPORTS)
996 return (bt_board_ports[bio_index]);
997 return (-1);
998 }
999
1000
1001 static void
btallocccbs(struct bt_softc * bt)1002 btallocccbs(struct bt_softc *bt)
1003 {
1004 struct bt_ccb *next_ccb;
1005 struct sg_map_node *sg_map;
1006 bus_addr_t physaddr;
1007 bt_sg_t *segs;
1008 int newcount;
1009 int i;
1010
1011 if (bt->num_ccbs >= bt->max_ccbs)
1012 /* Can't allocate any more */
1013 return;
1014
1015 next_ccb = &bt->bt_ccb_array[bt->num_ccbs];
1016
1017 sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT);
1018
1019 if (sg_map == NULL)
1020 goto error_exit;
1021
1022 /* Allocate S/G space for the next batch of CCBS */
1023 if (bus_dmamem_alloc(bt->sg_dmat, (void **)&sg_map->sg_vaddr,
1024 BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) {
1025 free(sg_map, M_DEVBUF);
1026 goto error_exit;
1027 }
1028
1029 SLIST_INSERT_HEAD(&bt->sg_maps, sg_map, links);
1030
1031 bus_dmamap_load(bt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr,
1032 PAGE_SIZE, btmapsgs, bt, /*flags*/0);
1033
1034 segs = sg_map->sg_vaddr;
1035 physaddr = sg_map->sg_physaddr;
1036
1037 newcount = (PAGE_SIZE / (BT_NSEG * sizeof(bt_sg_t)));
1038 for (i = 0; bt->num_ccbs < bt->max_ccbs && i < newcount; i++) {
1039 int error;
1040
1041 next_ccb->sg_list = segs;
1042 next_ccb->sg_list_phys = physaddr;
1043 next_ccb->flags = BCCB_FREE;
1044 callout_init_mtx(&next_ccb->timer, &bt->lock, 0);
1045 error = bus_dmamap_create(bt->buffer_dmat, /*flags*/0,
1046 &next_ccb->dmamap);
1047 if (error != 0)
1048 break;
1049 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, next_ccb, links);
1050 segs += BT_NSEG;
1051 physaddr += (BT_NSEG * sizeof(bt_sg_t));
1052 next_ccb++;
1053 bt->num_ccbs++;
1054 }
1055
1056 /* Reserve a CCB for error recovery */
1057 if (bt->recovery_bccb == NULL) {
1058 bt->recovery_bccb = SLIST_FIRST(&bt->free_bt_ccbs);
1059 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1060 }
1061
1062 if (SLIST_FIRST(&bt->free_bt_ccbs) != NULL)
1063 return;
1064
1065 error_exit:
1066 device_printf(bt->dev, "Can't malloc BCCBs\n");
1067 }
1068
1069 static __inline void
btfreeccb(struct bt_softc * bt,struct bt_ccb * bccb)1070 btfreeccb(struct bt_softc *bt, struct bt_ccb *bccb)
1071 {
1072
1073 if (!dumping)
1074 mtx_assert(&bt->lock, MA_OWNED);
1075 if ((bccb->flags & BCCB_ACTIVE) != 0)
1076 LIST_REMOVE(&bccb->ccb->ccb_h, sim_links.le);
1077 if (bt->resource_shortage != 0
1078 && (bccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
1079 bccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1080 bt->resource_shortage = FALSE;
1081 }
1082 bccb->flags = BCCB_FREE;
1083 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, bccb, links);
1084 bt->active_ccbs--;
1085 }
1086
1087 static __inline struct bt_ccb*
btgetccb(struct bt_softc * bt)1088 btgetccb(struct bt_softc *bt)
1089 {
1090 struct bt_ccb* bccb;
1091
1092 if (!dumping)
1093 mtx_assert(&bt->lock, MA_OWNED);
1094 if ((bccb = SLIST_FIRST(&bt->free_bt_ccbs)) != NULL) {
1095 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1096 bt->active_ccbs++;
1097 } else {
1098 btallocccbs(bt);
1099 bccb = SLIST_FIRST(&bt->free_bt_ccbs);
1100 if (bccb != NULL) {
1101 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1102 bt->active_ccbs++;
1103 }
1104 }
1105
1106 return (bccb);
1107 }
1108
1109 static void
btaction(struct cam_sim * sim,union ccb * ccb)1110 btaction(struct cam_sim *sim, union ccb *ccb)
1111 {
1112 struct bt_softc *bt;
1113
1114 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("btaction\n"));
1115
1116 bt = (struct bt_softc *)cam_sim_softc(sim);
1117 mtx_assert(&bt->lock, MA_OWNED);
1118
1119 switch (ccb->ccb_h.func_code) {
1120 /* Common cases first */
1121 case XPT_SCSI_IO: /* Execute the requested I/O operation */
1122 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
1123 {
1124 struct bt_ccb *bccb;
1125 struct bt_hccb *hccb;
1126
1127 /*
1128 * get a bccb to use.
1129 */
1130 if ((bccb = btgetccb(bt)) == NULL) {
1131
1132 bt->resource_shortage = TRUE;
1133 xpt_freeze_simq(bt->sim, /*count*/1);
1134 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1135 xpt_done(ccb);
1136 return;
1137 }
1138
1139 hccb = &bccb->hccb;
1140
1141 /*
1142 * So we can find the BCCB when an abort is requested
1143 */
1144 bccb->ccb = ccb;
1145 ccb->ccb_h.ccb_bccb_ptr = bccb;
1146 ccb->ccb_h.ccb_bt_ptr = bt;
1147
1148 /*
1149 * Put all the arguments for the xfer in the bccb
1150 */
1151 hccb->target_id = ccb->ccb_h.target_id;
1152 hccb->target_lun = ccb->ccb_h.target_lun;
1153 hccb->btstat = 0;
1154 hccb->sdstat = 0;
1155
1156 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
1157 struct ccb_scsiio *csio;
1158 struct ccb_hdr *ccbh;
1159 int error;
1160
1161 csio = &ccb->csio;
1162 ccbh = &csio->ccb_h;
1163 hccb->opcode = INITIATOR_CCB_WRESID;
1164 hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0;
1165 hccb->dataout =(ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0;
1166 hccb->cmd_len = csio->cdb_len;
1167 if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) {
1168 ccb->ccb_h.status = CAM_REQ_INVALID;
1169 btfreeccb(bt, bccb);
1170 xpt_done(ccb);
1171 return;
1172 }
1173 hccb->sense_len = csio->sense_len;
1174 if ((ccbh->flags & CAM_TAG_ACTION_VALID) != 0
1175 && ccb->csio.tag_action != CAM_TAG_ACTION_NONE) {
1176 hccb->tag_enable = TRUE;
1177 hccb->tag_type = (ccb->csio.tag_action & 0x3);
1178 } else {
1179 hccb->tag_enable = FALSE;
1180 hccb->tag_type = 0;
1181 }
1182 if ((ccbh->flags & CAM_CDB_POINTER) != 0) {
1183 if ((ccbh->flags & CAM_CDB_PHYS) == 0) {
1184 bcopy(csio->cdb_io.cdb_ptr,
1185 hccb->scsi_cdb, hccb->cmd_len);
1186 } else {
1187 /* I guess I could map it in... */
1188 ccbh->status = CAM_REQ_INVALID;
1189 btfreeccb(bt, bccb);
1190 xpt_done(ccb);
1191 return;
1192 }
1193 } else {
1194 bcopy(csio->cdb_io.cdb_bytes,
1195 hccb->scsi_cdb, hccb->cmd_len);
1196 }
1197 /* If need be, bounce our sense buffer */
1198 if (bt->sense_buffers != NULL) {
1199 hccb->sense_addr = btsensepaddr(bt, bccb);
1200 } else {
1201 hccb->sense_addr = vtophys(&csio->sense_data);
1202 }
1203 /*
1204 * If we have any data to send with this command,
1205 * map it into bus space.
1206 */
1207 error = bus_dmamap_load_ccb(
1208 bt->buffer_dmat,
1209 bccb->dmamap,
1210 ccb,
1211 btexecuteccb,
1212 bccb,
1213 /*flags*/0);
1214 if (error == EINPROGRESS) {
1215 /*
1216 * So as to maintain ordering, freeze the
1217 * controller queue until our mapping is
1218 * returned.
1219 */
1220 xpt_freeze_simq(bt->sim, 1);
1221 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
1222 }
1223 } else {
1224 hccb->opcode = INITIATOR_BUS_DEV_RESET;
1225 /* No data transfer */
1226 hccb->datain = TRUE;
1227 hccb->dataout = TRUE;
1228 hccb->cmd_len = 0;
1229 hccb->sense_len = 0;
1230 hccb->tag_enable = FALSE;
1231 hccb->tag_type = 0;
1232 btexecuteccb(bccb, NULL, 0, 0);
1233 }
1234 break;
1235 }
1236 case XPT_ABORT: /* Abort the specified CCB */
1237 /* XXX Implement */
1238 ccb->ccb_h.status = CAM_REQ_INVALID;
1239 xpt_done(ccb);
1240 break;
1241 case XPT_SET_TRAN_SETTINGS:
1242 {
1243 /* XXX Implement */
1244 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
1245 xpt_done(ccb);
1246 break;
1247 }
1248 case XPT_GET_TRAN_SETTINGS:
1249 /* Get default/user set transfer settings for the target */
1250 {
1251 struct ccb_trans_settings *cts;
1252 u_int target_mask;
1253
1254 cts = &ccb->cts;
1255 target_mask = 0x01 << ccb->ccb_h.target_id;
1256 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1257 struct ccb_trans_settings_scsi *scsi =
1258 &cts->proto_specific.scsi;
1259 struct ccb_trans_settings_spi *spi =
1260 &cts->xport_specific.spi;
1261 cts->protocol = PROTO_SCSI;
1262 cts->protocol_version = SCSI_REV_2;
1263 cts->transport = XPORT_SPI;
1264 cts->transport_version = 2;
1265
1266 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1267 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
1268
1269 if ((bt->disc_permitted & target_mask) != 0)
1270 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
1271 if ((bt->tags_permitted & target_mask) != 0)
1272 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
1273
1274 if ((bt->ultra_permitted & target_mask) != 0)
1275 spi->sync_period = 12;
1276 else if ((bt->fast_permitted & target_mask) != 0)
1277 spi->sync_period = 25;
1278 else if ((bt->sync_permitted & target_mask) != 0)
1279 spi->sync_period = 50;
1280 else
1281 spi->sync_period = 0;
1282
1283 if (spi->sync_period != 0)
1284 spi->sync_offset = 15;
1285
1286 spi->valid |= CTS_SPI_VALID_SYNC_RATE;
1287 spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
1288
1289 spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
1290 if ((bt->wide_permitted & target_mask) != 0)
1291 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
1292 else
1293 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
1294
1295 if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
1296 scsi->valid = CTS_SCSI_VALID_TQ;
1297 spi->valid |= CTS_SPI_VALID_DISC;
1298 } else
1299 scsi->valid = 0;
1300 } else {
1301 btfetchtransinfo(bt, cts);
1302 }
1303
1304 ccb->ccb_h.status = CAM_REQ_CMP;
1305 xpt_done(ccb);
1306 break;
1307 }
1308 case XPT_CALC_GEOMETRY:
1309 {
1310 struct ccb_calc_geometry *ccg;
1311 u_int32_t size_mb;
1312 u_int32_t secs_per_cylinder;
1313
1314 ccg = &ccb->ccg;
1315 size_mb = ccg->volume_size
1316 / ((1024L * 1024L) / ccg->block_size);
1317
1318 if (size_mb >= 1024 && (bt->extended_trans != 0)) {
1319 if (size_mb >= 2048) {
1320 ccg->heads = 255;
1321 ccg->secs_per_track = 63;
1322 } else {
1323 ccg->heads = 128;
1324 ccg->secs_per_track = 32;
1325 }
1326 } else {
1327 ccg->heads = 64;
1328 ccg->secs_per_track = 32;
1329 }
1330 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
1331 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
1332 ccb->ccb_h.status = CAM_REQ_CMP;
1333 xpt_done(ccb);
1334 break;
1335 }
1336 case XPT_RESET_BUS: /* Reset the specified SCSI bus */
1337 {
1338 btreset(bt, /*hardreset*/TRUE);
1339 ccb->ccb_h.status = CAM_REQ_CMP;
1340 xpt_done(ccb);
1341 break;
1342 }
1343 case XPT_TERM_IO: /* Terminate the I/O process */
1344 /* XXX Implement */
1345 ccb->ccb_h.status = CAM_REQ_INVALID;
1346 xpt_done(ccb);
1347 break;
1348 case XPT_PATH_INQ: /* Path routing inquiry */
1349 {
1350 struct ccb_pathinq *cpi = &ccb->cpi;
1351
1352 cpi->version_num = 1; /* XXX??? */
1353 cpi->hba_inquiry = PI_SDTR_ABLE;
1354 if (bt->tag_capable != 0)
1355 cpi->hba_inquiry |= PI_TAG_ABLE;
1356 if (bt->wide_bus != 0)
1357 cpi->hba_inquiry |= PI_WIDE_16;
1358 cpi->target_sprt = 0;
1359 cpi->hba_misc = 0;
1360 cpi->hba_eng_cnt = 0;
1361 cpi->max_target = bt->wide_bus ? 15 : 7;
1362 cpi->max_lun = 7;
1363 cpi->initiator_id = bt->scsi_id;
1364 cpi->bus_id = cam_sim_bus(sim);
1365 cpi->base_transfer_speed = 3300;
1366 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
1367 strlcpy(cpi->hba_vid, "BusLogic", HBA_IDLEN);
1368 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
1369 cpi->unit_number = cam_sim_unit(sim);
1370 cpi->ccb_h.status = CAM_REQ_CMP;
1371 cpi->transport = XPORT_SPI;
1372 cpi->transport_version = 2;
1373 cpi->protocol = PROTO_SCSI;
1374 cpi->protocol_version = SCSI_REV_2;
1375 xpt_done(ccb);
1376 break;
1377 }
1378 default:
1379 ccb->ccb_h.status = CAM_REQ_INVALID;
1380 xpt_done(ccb);
1381 break;
1382 }
1383 }
1384
1385 static void
btexecuteccb(void * arg,bus_dma_segment_t * dm_segs,int nseg,int error)1386 btexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
1387 {
1388 struct bt_ccb *bccb;
1389 union ccb *ccb;
1390 struct bt_softc *bt;
1391
1392 bccb = (struct bt_ccb *)arg;
1393 ccb = bccb->ccb;
1394 bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
1395
1396 if (error != 0) {
1397 if (error != EFBIG)
1398 device_printf(bt->dev,
1399 "Unexepected error 0x%x returned from "
1400 "bus_dmamap_load\n", error);
1401 if (ccb->ccb_h.status == CAM_REQ_INPROG) {
1402 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
1403 ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN;
1404 }
1405 btfreeccb(bt, bccb);
1406 xpt_done(ccb);
1407 return;
1408 }
1409
1410 if (nseg != 0) {
1411 bt_sg_t *sg;
1412 bus_dma_segment_t *end_seg;
1413 bus_dmasync_op_t op;
1414
1415 end_seg = dm_segs + nseg;
1416
1417 /* Copy the segments into our SG list */
1418 sg = bccb->sg_list;
1419 while (dm_segs < end_seg) {
1420 sg->len = dm_segs->ds_len;
1421 sg->addr = dm_segs->ds_addr;
1422 sg++;
1423 dm_segs++;
1424 }
1425
1426 if (nseg > 1) {
1427 bccb->hccb.opcode = INITIATOR_SG_CCB_WRESID;
1428 bccb->hccb.data_len = sizeof(bt_sg_t) * nseg;
1429 bccb->hccb.data_addr = bccb->sg_list_phys;
1430 } else {
1431 bccb->hccb.data_len = bccb->sg_list->len;
1432 bccb->hccb.data_addr = bccb->sg_list->addr;
1433 }
1434
1435 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1436 op = BUS_DMASYNC_PREREAD;
1437 else
1438 op = BUS_DMASYNC_PREWRITE;
1439
1440 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
1441
1442 } else {
1443 bccb->hccb.opcode = INITIATOR_CCB;
1444 bccb->hccb.data_len = 0;
1445 bccb->hccb.data_addr = 0;
1446 }
1447
1448 /*
1449 * Last time we need to check if this CCB needs to
1450 * be aborted.
1451 */
1452 if (ccb->ccb_h.status != CAM_REQ_INPROG) {
1453 if (nseg != 0)
1454 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1455 btfreeccb(bt, bccb);
1456 xpt_done(ccb);
1457 return;
1458 }
1459
1460 bccb->flags = BCCB_ACTIVE;
1461 ccb->ccb_h.status |= CAM_SIM_QUEUED;
1462 LIST_INSERT_HEAD(&bt->pending_ccbs, &ccb->ccb_h, sim_links.le);
1463
1464 callout_reset_sbt(&bccb->timer, SBT_1MS * ccb->ccb_h.timeout, 0,
1465 bttimeout, bccb, 0);
1466
1467 /* Tell the adapter about this command */
1468 bt->cur_outbox->ccb_addr = btccbvtop(bt, bccb);
1469 if (bt->cur_outbox->action_code != BMBO_FREE) {
1470 /*
1471 * We should never encounter a busy mailbox.
1472 * If we do, warn the user, and treat it as
1473 * a resource shortage. If the controller is
1474 * hung, one of the pending transactions will
1475 * timeout causing us to start recovery operations.
1476 */
1477 device_printf(bt->dev,
1478 "Encountered busy mailbox with %d out of %d "
1479 "commands active!!!\n", bt->active_ccbs,
1480 bt->max_ccbs);
1481 callout_stop(&bccb->timer);
1482 if (nseg != 0)
1483 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1484 btfreeccb(bt, bccb);
1485 bt->resource_shortage = TRUE;
1486 xpt_freeze_simq(bt->sim, /*count*/1);
1487 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1488 xpt_done(ccb);
1489 return;
1490 }
1491 bt->cur_outbox->action_code = BMBO_START;
1492 bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
1493 btnextoutbox(bt);
1494 }
1495
1496 void
bt_intr(void * arg)1497 bt_intr(void *arg)
1498 {
1499 struct bt_softc *bt;
1500
1501 bt = arg;
1502 mtx_lock(&bt->lock);
1503 bt_intr_locked(bt);
1504 mtx_unlock(&bt->lock);
1505 }
1506
1507 void
bt_intr_locked(struct bt_softc * bt)1508 bt_intr_locked(struct bt_softc *bt)
1509 {
1510 u_int intstat;
1511
1512 while (((intstat = bt_inb(bt, INTSTAT_REG)) & INTR_PENDING) != 0) {
1513
1514 if ((intstat & CMD_COMPLETE) != 0) {
1515 bt->latched_status = bt_inb(bt, STATUS_REG);
1516 bt->command_cmp = TRUE;
1517 }
1518
1519 bt_outb(bt, CONTROL_REG, RESET_INTR);
1520
1521 if ((intstat & IMB_LOADED) != 0) {
1522 while (bt->cur_inbox->comp_code != BMBI_FREE) {
1523 btdone(bt,
1524 btccbptov(bt, bt->cur_inbox->ccb_addr),
1525 bt->cur_inbox->comp_code);
1526 bt->cur_inbox->comp_code = BMBI_FREE;
1527 btnextinbox(bt);
1528 }
1529 }
1530
1531 if ((intstat & SCSI_BUS_RESET) != 0) {
1532 btreset(bt, /*hardreset*/FALSE);
1533 }
1534 }
1535 }
1536
1537 static void
btdone(struct bt_softc * bt,struct bt_ccb * bccb,bt_mbi_comp_code_t comp_code)1538 btdone(struct bt_softc *bt, struct bt_ccb *bccb, bt_mbi_comp_code_t comp_code)
1539 {
1540 union ccb *ccb;
1541 struct ccb_scsiio *csio;
1542
1543 ccb = bccb->ccb;
1544 csio = &bccb->ccb->csio;
1545
1546 if ((bccb->flags & BCCB_ACTIVE) == 0) {
1547 device_printf(bt->dev,
1548 "btdone - Attempt to free non-active BCCB %p\n",
1549 (void *)bccb);
1550 return;
1551 }
1552
1553 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1554 bus_dmasync_op_t op;
1555
1556 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1557 op = BUS_DMASYNC_POSTREAD;
1558 else
1559 op = BUS_DMASYNC_POSTWRITE;
1560 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
1561 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1562 }
1563
1564 if (bccb == bt->recovery_bccb) {
1565 /*
1566 * The recovery BCCB does not have a CCB associated
1567 * with it, so short circuit the normal error handling.
1568 * We now traverse our list of pending CCBs and process
1569 * any that were terminated by the recovery CCBs action.
1570 * We also reinstate timeouts for all remaining, pending,
1571 * CCBs.
1572 */
1573 struct cam_path *path;
1574 struct ccb_hdr *ccb_h;
1575 cam_status error;
1576
1577 /* Notify all clients that a BDR occurred */
1578 error = xpt_create_path(&path, /*periph*/NULL,
1579 cam_sim_path(bt->sim),
1580 bccb->hccb.target_id,
1581 CAM_LUN_WILDCARD);
1582
1583 if (error == CAM_REQ_CMP) {
1584 xpt_async(AC_SENT_BDR, path, NULL);
1585 xpt_free_path(path);
1586 }
1587
1588 ccb_h = LIST_FIRST(&bt->pending_ccbs);
1589 while (ccb_h != NULL) {
1590 struct bt_ccb *pending_bccb;
1591
1592 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
1593 if (pending_bccb->hccb.target_id
1594 == bccb->hccb.target_id) {
1595 pending_bccb->hccb.btstat = BTSTAT_HA_BDR;
1596 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1597 btdone(bt, pending_bccb, BMBI_ERROR);
1598 } else {
1599 callout_reset_sbt(&pending_bccb->timer,
1600 SBT_1MS * ccb_h->timeout, 0, bttimeout,
1601 pending_bccb, 0);
1602 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1603 }
1604 }
1605 device_printf(bt->dev, "No longer in timeout\n");
1606 return;
1607 }
1608
1609 callout_stop(&bccb->timer);
1610
1611 switch (comp_code) {
1612 case BMBI_FREE:
1613 device_printf(bt->dev,
1614 "btdone - CCB completed with free status!\n");
1615 break;
1616 case BMBI_NOT_FOUND:
1617 device_printf(bt->dev,
1618 "btdone - CCB Abort failed to find CCB\n");
1619 break;
1620 case BMBI_ABORT:
1621 case BMBI_ERROR:
1622 if (bootverbose) {
1623 printf("bt: ccb %p - error %x occurred. "
1624 "btstat = %x, sdstat = %x\n",
1625 (void *)bccb, comp_code, bccb->hccb.btstat,
1626 bccb->hccb.sdstat);
1627 }
1628 /* An error occurred */
1629 switch(bccb->hccb.btstat) {
1630 case BTSTAT_DATARUN_ERROR:
1631 if (bccb->hccb.data_len == 0) {
1632 /*
1633 * At least firmware 4.22, does this
1634 * for a QUEUE FULL condition.
1635 */
1636 bccb->hccb.sdstat = SCSI_STATUS_QUEUE_FULL;
1637 } else if (bccb->hccb.data_len < 0) {
1638 csio->ccb_h.status = CAM_DATA_RUN_ERR;
1639 break;
1640 }
1641 /* FALLTHROUGH */
1642 case BTSTAT_NOERROR:
1643 case BTSTAT_LINKED_CMD_COMPLETE:
1644 case BTSTAT_LINKED_CMD_FLAG_COMPLETE:
1645 case BTSTAT_DATAUNDERUN_ERROR:
1646
1647 csio->scsi_status = bccb->hccb.sdstat;
1648 csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
1649 switch(csio->scsi_status) {
1650 case SCSI_STATUS_CHECK_COND:
1651 case SCSI_STATUS_CMD_TERMINATED:
1652 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
1653 /* Bounce sense back if necessary */
1654 if (bt->sense_buffers != NULL) {
1655 csio->sense_data =
1656 *btsensevaddr(bt, bccb);
1657 }
1658 break;
1659 default:
1660 break;
1661 case SCSI_STATUS_OK:
1662 csio->ccb_h.status = CAM_REQ_CMP;
1663 break;
1664 }
1665 csio->resid = bccb->hccb.data_len;
1666 break;
1667 case BTSTAT_SELTIMEOUT:
1668 csio->ccb_h.status = CAM_SEL_TIMEOUT;
1669 break;
1670 case BTSTAT_UNEXPECTED_BUSFREE:
1671 csio->ccb_h.status = CAM_UNEXP_BUSFREE;
1672 break;
1673 case BTSTAT_INVALID_PHASE:
1674 csio->ccb_h.status = CAM_SEQUENCE_FAIL;
1675 break;
1676 case BTSTAT_INVALID_ACTION_CODE:
1677 panic("%s: Inavlid Action code", bt_name(bt));
1678 break;
1679 case BTSTAT_INVALID_OPCODE:
1680 panic("%s: Inavlid CCB Opcode code", bt_name(bt));
1681 break;
1682 case BTSTAT_LINKED_CCB_LUN_MISMATCH:
1683 /* We don't even support linked commands... */
1684 panic("%s: Linked CCB Lun Mismatch", bt_name(bt));
1685 break;
1686 case BTSTAT_INVALID_CCB_OR_SG_PARAM:
1687 panic("%s: Invalid CCB or SG list", bt_name(bt));
1688 break;
1689 case BTSTAT_AUTOSENSE_FAILED:
1690 csio->ccb_h.status = CAM_AUTOSENSE_FAIL;
1691 break;
1692 case BTSTAT_TAGGED_MSG_REJECTED:
1693 {
1694 struct ccb_trans_settings neg;
1695 struct ccb_trans_settings_scsi *scsi =
1696 &neg.proto_specific.scsi;
1697
1698 neg.protocol = PROTO_SCSI;
1699 neg.protocol_version = SCSI_REV_2;
1700 neg.transport = XPORT_SPI;
1701 neg.transport_version = 2;
1702 scsi->valid = CTS_SCSI_VALID_TQ;
1703 scsi->flags = 0;
1704 xpt_print_path(csio->ccb_h.path);
1705 printf("refuses tagged commands. Performing "
1706 "non-tagged I/O\n");
1707 xpt_setup_ccb(&neg.ccb_h, csio->ccb_h.path,
1708 /*priority*/1);
1709 xpt_async(AC_TRANSFER_NEG, csio->ccb_h.path, &neg);
1710 bt->tags_permitted &= ~(0x01 << csio->ccb_h.target_id);
1711 csio->ccb_h.status = CAM_MSG_REJECT_REC;
1712 break;
1713 }
1714 case BTSTAT_UNSUPPORTED_MSG_RECEIVED:
1715 /*
1716 * XXX You would think that this is
1717 * a recoverable error... Hmmm.
1718 */
1719 csio->ccb_h.status = CAM_REQ_CMP_ERR;
1720 break;
1721 case BTSTAT_HA_SOFTWARE_ERROR:
1722 case BTSTAT_HA_WATCHDOG_ERROR:
1723 case BTSTAT_HARDWARE_FAILURE:
1724 /* Hardware reset ??? Can we recover ??? */
1725 csio->ccb_h.status = CAM_NO_HBA;
1726 break;
1727 case BTSTAT_TARGET_IGNORED_ATN:
1728 case BTSTAT_OTHER_SCSI_BUS_RESET:
1729 case BTSTAT_HA_SCSI_BUS_RESET:
1730 if ((csio->ccb_h.status & CAM_STATUS_MASK)
1731 != CAM_CMD_TIMEOUT)
1732 csio->ccb_h.status = CAM_SCSI_BUS_RESET;
1733 break;
1734 case BTSTAT_HA_BDR:
1735 if ((bccb->flags & BCCB_DEVICE_RESET) == 0)
1736 csio->ccb_h.status = CAM_BDR_SENT;
1737 else
1738 csio->ccb_h.status = CAM_CMD_TIMEOUT;
1739 break;
1740 case BTSTAT_INVALID_RECONNECT:
1741 case BTSTAT_ABORT_QUEUE_GENERATED:
1742 csio->ccb_h.status = CAM_REQ_TERMIO;
1743 break;
1744 case BTSTAT_SCSI_PERROR_DETECTED:
1745 csio->ccb_h.status = CAM_UNCOR_PARITY;
1746 break;
1747 }
1748 if (csio->ccb_h.status != CAM_REQ_CMP) {
1749 xpt_freeze_devq(csio->ccb_h.path, /*count*/1);
1750 csio->ccb_h.status |= CAM_DEV_QFRZN;
1751 }
1752 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
1753 ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1754 btfreeccb(bt, bccb);
1755 xpt_done(ccb);
1756 break;
1757 case BMBI_OK:
1758 /* All completed without incident */
1759 ccb->ccb_h.status |= CAM_REQ_CMP;
1760 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
1761 ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1762 btfreeccb(bt, bccb);
1763 xpt_done(ccb);
1764 break;
1765 }
1766 }
1767
1768 static int
btreset(struct bt_softc * bt,int hard_reset)1769 btreset(struct bt_softc* bt, int hard_reset)
1770 {
1771 struct ccb_hdr *ccb_h;
1772 u_int status;
1773 u_int timeout;
1774 u_int8_t reset_type;
1775
1776 if (hard_reset != 0)
1777 reset_type = HARD_RESET;
1778 else
1779 reset_type = SOFT_RESET;
1780 bt_outb(bt, CONTROL_REG, reset_type);
1781
1782 /* Wait 5sec. for Diagnostic start */
1783 timeout = 5 * 10000;
1784 while (--timeout) {
1785 status = bt_inb(bt, STATUS_REG);
1786 if ((status & DIAG_ACTIVE) != 0)
1787 break;
1788 DELAY(100);
1789 }
1790 if (timeout == 0) {
1791 if (bootverbose)
1792 device_printf(bt->dev,
1793 "btreset - Diagnostic Active failed to "
1794 "assert. status = 0x%x\n", status);
1795 return (ETIMEDOUT);
1796 }
1797
1798 /* Wait 10sec. for Diagnostic end */
1799 timeout = 10 * 10000;
1800 while (--timeout) {
1801 status = bt_inb(bt, STATUS_REG);
1802 if ((status & DIAG_ACTIVE) == 0)
1803 break;
1804 DELAY(100);
1805 }
1806 if (timeout == 0) {
1807 panic("%s: btreset - Diagnostic Active failed to drop. "
1808 "status = 0x%x\n", bt_name(bt), status);
1809 return (ETIMEDOUT);
1810 }
1811
1812 /* Wait for the host adapter to become ready or report a failure */
1813 timeout = 10000;
1814 while (--timeout) {
1815 status = bt_inb(bt, STATUS_REG);
1816 if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0)
1817 break;
1818 DELAY(100);
1819 }
1820 if (timeout == 0) {
1821 device_printf(bt->dev,
1822 "btreset - Host adapter failed to come ready. "
1823 "status = 0x%x\n", status);
1824 return (ETIMEDOUT);
1825 }
1826
1827 /* If the diagnostics failed, tell the user */
1828 if ((status & DIAG_FAIL) != 0
1829 || (status & HA_READY) == 0) {
1830 device_printf(bt->dev,
1831 "btreset - Adapter failed diagnostics\n");
1832
1833 if ((status & DATAIN_REG_READY) != 0)
1834 device_printf(bt->dev,
1835 "btreset - Host Adapter Error code = 0x%x\n",
1836 bt_inb(bt, DATAIN_REG));
1837 return (ENXIO);
1838 }
1839
1840 /* If we've allocated mailboxes, initialize them */
1841 if (bt->init_level > 4)
1842 btinitmboxes(bt);
1843
1844 /* If we've attached to the XPT, tell it about the event */
1845 if (bt->path != NULL)
1846 xpt_async(AC_BUS_RESET, bt->path, NULL);
1847
1848 /*
1849 * Perform completion processing for all outstanding CCBs.
1850 */
1851 while ((ccb_h = LIST_FIRST(&bt->pending_ccbs)) != NULL) {
1852 struct bt_ccb *pending_bccb;
1853
1854 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
1855 pending_bccb->hccb.btstat = BTSTAT_HA_SCSI_BUS_RESET;
1856 btdone(bt, pending_bccb, BMBI_ERROR);
1857 }
1858
1859 return (0);
1860 }
1861
1862 /*
1863 * Send a command to the adapter.
1864 */
1865 int
bt_cmd(struct bt_softc * bt,bt_op_t opcode,u_int8_t * params,u_int param_len,u_int8_t * reply_data,u_int reply_len,u_int cmd_timeout)1866 bt_cmd(struct bt_softc *bt, bt_op_t opcode, u_int8_t *params, u_int param_len,
1867 u_int8_t *reply_data, u_int reply_len, u_int cmd_timeout)
1868 {
1869 u_int timeout;
1870 u_int status;
1871 u_int saved_status;
1872 u_int intstat;
1873 u_int reply_buf_size;
1874 int cmd_complete;
1875 int error;
1876
1877 /* No data returned to start */
1878 reply_buf_size = reply_len;
1879 reply_len = 0;
1880 intstat = 0;
1881 cmd_complete = 0;
1882 saved_status = 0;
1883 error = 0;
1884
1885 bt->command_cmp = 0;
1886 /*
1887 * Wait up to 10 sec. for the adapter to become
1888 * ready to accept commands.
1889 */
1890 timeout = 100000;
1891 while (--timeout) {
1892 status = bt_inb(bt, STATUS_REG);
1893 if ((status & HA_READY) != 0
1894 && (status & CMD_REG_BUSY) == 0)
1895 break;
1896 /*
1897 * Throw away any pending data which may be
1898 * left over from earlier commands that we
1899 * timedout on.
1900 */
1901 if ((status & DATAIN_REG_READY) != 0)
1902 (void)bt_inb(bt, DATAIN_REG);
1903 DELAY(100);
1904 }
1905 if (timeout == 0) {
1906 device_printf(bt->dev,
1907 "bt_cmd: Timeout waiting for adapter ready, "
1908 "status = 0x%x\n", status);
1909 return (ETIMEDOUT);
1910 }
1911
1912 /*
1913 * Send the opcode followed by any necessary parameter bytes.
1914 */
1915 bt_outb(bt, COMMAND_REG, opcode);
1916
1917 /*
1918 * Wait for up to 1sec for each byte of the
1919 * parameter list sent to be sent.
1920 */
1921 timeout = 10000;
1922 while (param_len && --timeout) {
1923 DELAY(100);
1924 status = bt_inb(bt, STATUS_REG);
1925 intstat = bt_inb(bt, INTSTAT_REG);
1926
1927 if ((intstat & (INTR_PENDING|CMD_COMPLETE))
1928 == (INTR_PENDING|CMD_COMPLETE)) {
1929 saved_status = status;
1930 cmd_complete = 1;
1931 break;
1932 }
1933 if (bt->command_cmp != 0) {
1934 saved_status = bt->latched_status;
1935 cmd_complete = 1;
1936 break;
1937 }
1938 if ((status & DATAIN_REG_READY) != 0)
1939 break;
1940 if ((status & CMD_REG_BUSY) == 0) {
1941 bt_outb(bt, COMMAND_REG, *params++);
1942 param_len--;
1943 timeout = 10000;
1944 }
1945 }
1946 if (timeout == 0) {
1947 device_printf(bt->dev, "bt_cmd: Timeout sending parameters, "
1948 "status = 0x%x\n", status);
1949 cmd_complete = 1;
1950 saved_status = status;
1951 error = ETIMEDOUT;
1952 }
1953
1954 /*
1955 * Wait for the command to complete.
1956 */
1957 while (cmd_complete == 0 && --cmd_timeout) {
1958
1959 status = bt_inb(bt, STATUS_REG);
1960 intstat = bt_inb(bt, INTSTAT_REG);
1961 /*
1962 * It may be that this command was issued with
1963 * controller interrupts disabled. We'll never
1964 * get to our command if an incoming mailbox
1965 * interrupt is pending, so take care of completed
1966 * mailbox commands by calling our interrupt handler.
1967 */
1968 if ((intstat & (INTR_PENDING|IMB_LOADED))
1969 == (INTR_PENDING|IMB_LOADED))
1970 bt_intr_locked(bt);
1971
1972 if (bt->command_cmp != 0) {
1973 /*
1974 * Our interrupt handler saw CMD_COMPLETE
1975 * status before we did.
1976 */
1977 cmd_complete = 1;
1978 saved_status = bt->latched_status;
1979 } else if ((intstat & (INTR_PENDING|CMD_COMPLETE))
1980 == (INTR_PENDING|CMD_COMPLETE)) {
1981 /*
1982 * Our poll (in case interrupts are blocked)
1983 * saw the CMD_COMPLETE interrupt.
1984 */
1985 cmd_complete = 1;
1986 saved_status = status;
1987 } else if (opcode == BOP_MODIFY_IO_ADDR
1988 && (status & CMD_REG_BUSY) == 0) {
1989 /*
1990 * The BOP_MODIFY_IO_ADDR does not issue a CMD_COMPLETE,
1991 * but it should update the status register. So, we
1992 * consider this command complete when the CMD_REG_BUSY
1993 * status clears.
1994 */
1995 saved_status = status;
1996 cmd_complete = 1;
1997 } else if ((status & DATAIN_REG_READY) != 0) {
1998 u_int8_t data;
1999
2000 data = bt_inb(bt, DATAIN_REG);
2001 if (reply_len < reply_buf_size) {
2002 *reply_data++ = data;
2003 } else {
2004 device_printf(bt->dev,
2005 "bt_cmd - Discarded reply data byte "
2006 "for opcode 0x%x\n", opcode);
2007 }
2008 /*
2009 * Reset timeout to ensure at least a second
2010 * between response bytes.
2011 */
2012 cmd_timeout = MAX(cmd_timeout, 10000);
2013 reply_len++;
2014
2015 } else if ((opcode == BOP_FETCH_LRAM)
2016 && (status & HA_READY) != 0) {
2017 saved_status = status;
2018 cmd_complete = 1;
2019 }
2020 DELAY(100);
2021 }
2022 if (cmd_timeout == 0) {
2023 device_printf(bt->dev,
2024 "bt_cmd: Timeout waiting for command (%x) "
2025 "to complete.\n", opcode);
2026 device_printf(bt->dev, "status = 0x%x, intstat = 0x%x, "
2027 "rlen %d\n", status, intstat, reply_len);
2028 error = (ETIMEDOUT);
2029 }
2030
2031 /*
2032 * Clear any pending interrupts.
2033 */
2034 bt_intr_locked(bt);
2035
2036 if (error != 0)
2037 return (error);
2038
2039 /*
2040 * If the command was rejected by the controller, tell the caller.
2041 */
2042 if ((saved_status & CMD_INVALID) != 0) {
2043 /*
2044 * Some early adapters may not recover properly from
2045 * an invalid command. If it appears that the controller
2046 * has wedged (i.e. status was not cleared by our interrupt
2047 * reset above), perform a soft reset.
2048 */
2049 if (bootverbose)
2050 device_printf(bt->dev, "Invalid Command 0x%x\n",
2051 opcode);
2052 DELAY(1000);
2053 status = bt_inb(bt, STATUS_REG);
2054 if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY|
2055 CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0
2056 || (status & (HA_READY|INIT_REQUIRED))
2057 != (HA_READY|INIT_REQUIRED)) {
2058 btreset(bt, /*hard_reset*/FALSE);
2059 }
2060 return (EINVAL);
2061 }
2062
2063 if (param_len > 0) {
2064 /* The controller did not accept the full argument list */
2065 return (E2BIG);
2066 }
2067
2068 if (reply_len != reply_buf_size) {
2069 /* Too much or too little data received */
2070 return (EMSGSIZE);
2071 }
2072
2073 /* We were successful */
2074 return (0);
2075 }
2076
2077 static int
btinitmboxes(struct bt_softc * bt)2078 btinitmboxes(struct bt_softc *bt) {
2079 init_32b_mbox_params_t init_mbox;
2080 int error;
2081
2082 bzero(bt->in_boxes, sizeof(bt_mbox_in_t) * bt->num_boxes);
2083 bzero(bt->out_boxes, sizeof(bt_mbox_out_t) * bt->num_boxes);
2084 bt->cur_inbox = bt->in_boxes;
2085 bt->last_inbox = bt->in_boxes + bt->num_boxes - 1;
2086 bt->cur_outbox = bt->out_boxes;
2087 bt->last_outbox = bt->out_boxes + bt->num_boxes - 1;
2088
2089 /* Tell the adapter about them */
2090 init_mbox.num_boxes = bt->num_boxes;
2091 init_mbox.base_addr[0] = bt->mailbox_physbase & 0xFF;
2092 init_mbox.base_addr[1] = (bt->mailbox_physbase >> 8) & 0xFF;
2093 init_mbox.base_addr[2] = (bt->mailbox_physbase >> 16) & 0xFF;
2094 init_mbox.base_addr[3] = (bt->mailbox_physbase >> 24) & 0xFF;
2095 error = bt_cmd(bt, BOP_INITIALIZE_32BMBOX, (u_int8_t *)&init_mbox,
2096 /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL,
2097 /*reply_len*/0, DEFAULT_CMD_TIMEOUT);
2098
2099 if (error != 0)
2100 printf("btinitmboxes: Initialization command failed\n");
2101 else if (bt->strict_rr != 0) {
2102 /*
2103 * If the controller supports
2104 * strict round robin mode,
2105 * enable it
2106 */
2107 u_int8_t param;
2108
2109 param = 0;
2110 error = bt_cmd(bt, BOP_ENABLE_STRICT_RR, ¶m, 1,
2111 /*reply_buf*/NULL, /*reply_len*/0,
2112 DEFAULT_CMD_TIMEOUT);
2113
2114 if (error != 0) {
2115 printf("btinitmboxes: Unable to enable strict RR\n");
2116 error = 0;
2117 } else if (bootverbose) {
2118 device_printf(bt->dev,
2119 "Using Strict Round Robin Mailbox Mode\n");
2120 }
2121 }
2122
2123 return (error);
2124 }
2125
2126 /*
2127 * Update the XPT's idea of the negotiated transfer
2128 * parameters for a particular target.
2129 */
2130 static void
btfetchtransinfo(struct bt_softc * bt,struct ccb_trans_settings * cts)2131 btfetchtransinfo(struct bt_softc *bt, struct ccb_trans_settings *cts)
2132 {
2133 setup_data_t setup_info;
2134 u_int target;
2135 u_int targ_offset;
2136 u_int targ_mask;
2137 u_int sync_period;
2138 u_int sync_offset;
2139 u_int bus_width;
2140 int error;
2141 u_int8_t param;
2142 targ_syncinfo_t sync_info;
2143 struct ccb_trans_settings_scsi *scsi =
2144 &cts->proto_specific.scsi;
2145 struct ccb_trans_settings_spi *spi =
2146 &cts->xport_specific.spi;
2147
2148 spi->valid = 0;
2149 scsi->valid = 0;
2150
2151 target = cts->ccb_h.target_id;
2152 targ_offset = (target & 0x7);
2153 targ_mask = (0x01 << targ_offset);
2154
2155 /*
2156 * Inquire Setup Information. This command retreives the
2157 * Wide negotiation status for recent adapters as well as
2158 * the sync info for older models.
2159 */
2160 param = sizeof(setup_info);
2161 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, ¶m, /*paramlen*/1,
2162 (u_int8_t*)&setup_info, sizeof(setup_info),
2163 DEFAULT_CMD_TIMEOUT);
2164
2165 if (error != 0) {
2166 device_printf(bt->dev,
2167 "btfetchtransinfo - Inquire Setup Info Failed %x\n",
2168 error);
2169 return;
2170 }
2171
2172 sync_info = (target < 8) ? setup_info.low_syncinfo[targ_offset]
2173 : setup_info.high_syncinfo[targ_offset];
2174
2175 if (sync_info.sync == 0)
2176 sync_offset = 0;
2177 else
2178 sync_offset = sync_info.offset;
2179
2180
2181 bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2182 if (strcmp(bt->firmware_ver, "5.06L") >= 0) {
2183 u_int wide_active;
2184
2185 wide_active =
2186 (target < 8) ? (setup_info.low_wide_active & targ_mask)
2187 : (setup_info.high_wide_active & targ_mask);
2188
2189 if (wide_active)
2190 bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2191 } else if ((bt->wide_permitted & targ_mask) != 0) {
2192 struct ccb_getdev cgd;
2193
2194 /*
2195 * Prior to rev 5.06L, wide status isn't provided,
2196 * so we "guess" that wide transfers are in effect
2197 * if the user settings allow for wide and the inquiry
2198 * data for the device indicates that it can handle
2199 * wide transfers.
2200 */
2201 xpt_setup_ccb(&cgd.ccb_h, cts->ccb_h.path, /*priority*/1);
2202 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2203 xpt_action((union ccb *)&cgd);
2204 if ((cgd.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
2205 && (cgd.inq_data.flags & SID_WBus16) != 0)
2206 bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2207 }
2208
2209 if (bt->firmware_ver[0] >= '3') {
2210 /*
2211 * For adapters that can do fast or ultra speeds,
2212 * use the more exact Target Sync Information command.
2213 */
2214 target_sync_info_data_t sync_info;
2215
2216 param = sizeof(sync_info);
2217 error = bt_cmd(bt, BOP_TARG_SYNC_INFO, ¶m, /*paramlen*/1,
2218 (u_int8_t*)&sync_info, sizeof(sync_info),
2219 DEFAULT_CMD_TIMEOUT);
2220
2221 if (error != 0) {
2222 device_printf(bt->dev,
2223 "btfetchtransinfo - Inquire Sync "
2224 "Info Failed 0x%x\n", error);
2225 return;
2226 }
2227 sync_period = sync_info.sync_rate[target] * 100;
2228 } else {
2229 sync_period = 2000 + (500 * sync_info.period);
2230 }
2231
2232 cts->protocol = PROTO_SCSI;
2233 cts->protocol_version = SCSI_REV_2;
2234 cts->transport = XPORT_SPI;
2235 cts->transport_version = 2;
2236
2237 spi->sync_period = sync_period;
2238 spi->valid |= CTS_SPI_VALID_SYNC_RATE;
2239 spi->sync_offset = sync_offset;
2240 spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
2241
2242 spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
2243 spi->bus_width = bus_width;
2244
2245 if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
2246 scsi->valid = CTS_SCSI_VALID_TQ;
2247 spi->valid |= CTS_SPI_VALID_DISC;
2248 } else
2249 scsi->valid = 0;
2250
2251 xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts);
2252 }
2253
2254 static void
btmapmboxes(void * arg,bus_dma_segment_t * segs,int nseg,int error)2255 btmapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2256 {
2257 struct bt_softc* bt;
2258
2259 bt = (struct bt_softc*)arg;
2260 bt->mailbox_physbase = segs->ds_addr;
2261 }
2262
2263 static void
btmapccbs(void * arg,bus_dma_segment_t * segs,int nseg,int error)2264 btmapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2265 {
2266 struct bt_softc* bt;
2267
2268 bt = (struct bt_softc*)arg;
2269 bt->bt_ccb_physbase = segs->ds_addr;
2270 }
2271
2272 static void
btmapsgs(void * arg,bus_dma_segment_t * segs,int nseg,int error)2273 btmapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2274 {
2275
2276 struct bt_softc* bt;
2277
2278 bt = (struct bt_softc*)arg;
2279 SLIST_FIRST(&bt->sg_maps)->sg_physaddr = segs->ds_addr;
2280 }
2281
2282 static void
btpoll(struct cam_sim * sim)2283 btpoll(struct cam_sim *sim)
2284 {
2285 bt_intr_locked(cam_sim_softc(sim));
2286 }
2287
2288 void
bttimeout(void * arg)2289 bttimeout(void *arg)
2290 {
2291 struct bt_ccb *bccb;
2292 union ccb *ccb;
2293 struct bt_softc *bt;
2294
2295 bccb = (struct bt_ccb *)arg;
2296 ccb = bccb->ccb;
2297 bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
2298 mtx_assert(&bt->lock, MA_OWNED);
2299 xpt_print_path(ccb->ccb_h.path);
2300 printf("CCB %p - timed out\n", (void *)bccb);
2301
2302 if ((bccb->flags & BCCB_ACTIVE) == 0) {
2303 xpt_print_path(ccb->ccb_h.path);
2304 printf("CCB %p - timed out CCB already completed\n",
2305 (void *)bccb);
2306 return;
2307 }
2308
2309 /*
2310 * In order to simplify the recovery process, we ask the XPT
2311 * layer to halt the queue of new transactions and we traverse
2312 * the list of pending CCBs and remove their timeouts. This
2313 * means that the driver attempts to clear only one error
2314 * condition at a time. In general, timeouts that occur
2315 * close together are related anyway, so there is no benefit
2316 * in attempting to handle errors in parallel. Timeouts will
2317 * be reinstated when the recovery process ends.
2318 */
2319 if ((bccb->flags & BCCB_DEVICE_RESET) == 0) {
2320 struct ccb_hdr *ccb_h;
2321
2322 if ((bccb->flags & BCCB_RELEASE_SIMQ) == 0) {
2323 xpt_freeze_simq(bt->sim, /*count*/1);
2324 bccb->flags |= BCCB_RELEASE_SIMQ;
2325 }
2326
2327 ccb_h = LIST_FIRST(&bt->pending_ccbs);
2328 while (ccb_h != NULL) {
2329 struct bt_ccb *pending_bccb;
2330
2331 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
2332 callout_stop(&pending_bccb->timer);
2333 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
2334 }
2335 }
2336
2337 if ((bccb->flags & BCCB_DEVICE_RESET) != 0
2338 || bt->cur_outbox->action_code != BMBO_FREE
2339 || ((bccb->hccb.tag_enable == TRUE)
2340 && (bt->firmware_ver[0] < '5'))) {
2341 /*
2342 * Try a full host adapter/SCSI bus reset.
2343 * We do this only if we have already attempted
2344 * to clear the condition with a BDR, or we cannot
2345 * attempt a BDR for lack of mailbox resources
2346 * or because of faulty firmware. It turns out
2347 * that firmware versions prior to 5.xx treat BDRs
2348 * as untagged commands that cannot be sent until
2349 * all outstanding tagged commands have been processed.
2350 * This makes it somewhat difficult to use a BDR to
2351 * clear up a problem with an uncompleted tagged command.
2352 */
2353 ccb->ccb_h.status = CAM_CMD_TIMEOUT;
2354 btreset(bt, /*hardreset*/TRUE);
2355 device_printf(bt->dev, "No longer in timeout\n");
2356 } else {
2357 /*
2358 * Send a Bus Device Reset message:
2359 * The target that is holding up the bus may not
2360 * be the same as the one that triggered this timeout
2361 * (different commands have different timeout lengths),
2362 * but we have no way of determining this from our
2363 * timeout handler. Our strategy here is to queue a
2364 * BDR message to the target of the timed out command.
2365 * If this fails, we'll get another timeout 2 seconds
2366 * later which will attempt a bus reset.
2367 */
2368 bccb->flags |= BCCB_DEVICE_RESET;
2369 callout_reset(&bccb->timer, 2 * hz, bttimeout, bccb);
2370
2371 bt->recovery_bccb->hccb.opcode = INITIATOR_BUS_DEV_RESET;
2372
2373 /* No Data Transfer */
2374 bt->recovery_bccb->hccb.datain = TRUE;
2375 bt->recovery_bccb->hccb.dataout = TRUE;
2376 bt->recovery_bccb->hccb.btstat = 0;
2377 bt->recovery_bccb->hccb.sdstat = 0;
2378 bt->recovery_bccb->hccb.target_id = ccb->ccb_h.target_id;
2379
2380 /* Tell the adapter about this command */
2381 bt->cur_outbox->ccb_addr = btccbvtop(bt, bt->recovery_bccb);
2382 bt->cur_outbox->action_code = BMBO_START;
2383 bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
2384 btnextoutbox(bt);
2385 }
2386 }
2387
2388 MODULE_VERSION(bt, 1);
2389 MODULE_DEPEND(bt, cam, 1, 1, 1);
2390