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_eisa.c BT-74X, BT-75x cards, SDC3222F
6 * sys/dev/buslogic/bt_pci.c BT-946, BT-948, BT-956, BT-958 cards
8 * Copyright (c) 1998, 1999 Justin T. Gibbs.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification, immediately at the beginning of the file.
17 * 2. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $FreeBSD: src/sys/dev/buslogic/bt.c,v 1.25.2.1 2000/08/02 22:32:26 peter Exp $
33 * $DragonFly: src/sys/dev/disk/buslogic/bt.c,v 1.10 2005/06/11 09:03:48 swildner Exp $
37 * Special thanks to Leonard N. Zubkoff for writing such a complete and
38 * well documented Mylex/BusLogic MultiMaster driver for Linux. Support
39 * in this driver for the wide range of MultiMaster controllers and
40 * firmware revisions, with their otherwise undocumented quirks, would not
41 * have been possible without his efforts.
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/malloc.h>
48 #include <sys/kernel.h>
49 #include <sys/sysctl.h>
51 #include <sys/thread2.h>
54 * XXX It appears that BusLogic PCI adapters go out to lunch if you
55 * attempt to perform memory mapped I/O.
60 #include <machine/bus_memio.h>
63 #include <machine/bus_pio.h>
64 #include <machine/bus.h>
65 #include <machine/clock.h>
68 #include <bus/cam/cam.h>
69 #include <bus/cam/cam_ccb.h>
70 #include <bus/cam/cam_sim.h>
71 #include <bus/cam/cam_xpt_sim.h>
72 #include <bus/cam/cam_debug.h>
74 #include <bus/cam/scsi/scsi_message.h>
81 /* MailBox Management functions */
82 static __inline void btnextinbox(struct bt_softc *bt);
83 static __inline void btnextoutbox(struct bt_softc *bt);
86 btnextinbox(struct bt_softc *bt)
88 if (bt->cur_inbox == bt->last_inbox)
89 bt->cur_inbox = bt->in_boxes;
95 btnextoutbox(struct bt_softc *bt)
97 if (bt->cur_outbox == bt->last_outbox)
98 bt->cur_outbox = bt->out_boxes;
103 /* CCB Mangement functions */
104 static __inline u_int32_t btccbvtop(struct bt_softc *bt,
105 struct bt_ccb *bccb);
106 static __inline struct bt_ccb* btccbptov(struct bt_softc *bt,
108 static __inline u_int32_t btsensepaddr(struct bt_softc *bt,
109 struct bt_ccb *bccb);
110 static __inline struct scsi_sense_data* btsensevaddr(struct bt_softc *bt,
111 struct bt_ccb *bccb);
113 static __inline u_int32_t
114 btccbvtop(struct bt_softc *bt, struct bt_ccb *bccb)
116 return (bt->bt_ccb_physbase
117 + (u_int32_t)((caddr_t)bccb - (caddr_t)bt->bt_ccb_array));
120 static __inline struct bt_ccb *
121 btccbptov(struct bt_softc *bt, u_int32_t ccb_addr)
123 return (bt->bt_ccb_array +
124 ((struct bt_ccb*)ccb_addr-(struct bt_ccb*)bt->bt_ccb_physbase));
127 static __inline u_int32_t
128 btsensepaddr(struct bt_softc *bt, struct bt_ccb *bccb)
132 index = (u_int)(bccb - bt->bt_ccb_array);
133 return (bt->sense_buffers_physbase
134 + (index * sizeof(struct scsi_sense_data)));
137 static __inline struct scsi_sense_data *
138 btsensevaddr(struct bt_softc *bt, struct bt_ccb *bccb)
142 index = (u_int)(bccb - bt->bt_ccb_array);
143 return (bt->sense_buffers + index);
146 static __inline struct bt_ccb* btgetccb(struct bt_softc *bt);
147 static __inline void btfreeccb(struct bt_softc *bt,
148 struct bt_ccb *bccb);
149 static void btallocccbs(struct bt_softc *bt);
150 static bus_dmamap_callback_t btexecuteccb;
151 static void btdone(struct bt_softc *bt, struct bt_ccb *bccb,
152 bt_mbi_comp_code_t comp_code);
154 /* Host adapter command functions */
155 static int btreset(struct bt_softc* bt, int hard_reset);
157 /* Initialization functions */
158 static int btinitmboxes(struct bt_softc *bt);
159 static bus_dmamap_callback_t btmapmboxes;
160 static bus_dmamap_callback_t btmapccbs;
161 static bus_dmamap_callback_t btmapsgs;
163 /* Transfer Negotiation Functions */
164 static void btfetchtransinfo(struct bt_softc *bt,
165 struct ccb_trans_settings *cts);
167 /* CAM SIM entry points */
168 #define ccb_bccb_ptr spriv_ptr0
169 #define ccb_bt_ptr spriv_ptr1
170 static void btaction(struct cam_sim *sim, union ccb *ccb);
171 static void btpoll(struct cam_sim *sim);
173 /* Our timeout handler */
180 * Do our own re-probe protection until a configuration
181 * manager can do it for us. This ensures that we don't
182 * reprobe a card already found by the EISA or PCI probes.
184 struct bt_isa_port bt_isa_ports[] =
195 * I/O ports listed in the order enumerated by the
196 * card for certain op codes.
198 u_int16_t bt_board_ports[] =
208 /* Exported functions */
210 bt_init_softc(device_t dev, struct resource *port,
211 struct resource *irq, struct resource *drq)
213 struct bt_softc *bt = device_get_softc(dev);
215 SLIST_INIT(&bt->free_bt_ccbs);
216 LIST_INIT(&bt->pending_ccbs);
217 SLIST_INIT(&bt->sg_maps);
219 bt->unit = device_get_unit(dev);
223 bt->tag = rman_get_bustag(port);
224 bt->bsh = rman_get_bushandle(port);
228 bt_free_softc(device_t dev)
230 struct bt_softc *bt = device_get_softc(dev);
232 switch (bt->init_level) {
235 bus_dmamap_unload(bt->sense_dmat, bt->sense_dmamap);
237 bus_dmamem_free(bt->sense_dmat, bt->sense_buffers,
240 bus_dma_tag_destroy(bt->sense_dmat);
243 struct sg_map_node *sg_map;
245 while ((sg_map = SLIST_FIRST(&bt->sg_maps))!= NULL) {
246 SLIST_REMOVE_HEAD(&bt->sg_maps, links);
247 bus_dmamap_unload(bt->sg_dmat,
249 bus_dmamem_free(bt->sg_dmat, sg_map->sg_vaddr,
251 free(sg_map, M_DEVBUF);
253 bus_dma_tag_destroy(bt->sg_dmat);
256 bus_dmamap_unload(bt->ccb_dmat, bt->ccb_dmamap);
258 bus_dmamem_free(bt->ccb_dmat, bt->bt_ccb_array,
260 bus_dmamap_destroy(bt->ccb_dmat, bt->ccb_dmamap);
262 bus_dma_tag_destroy(bt->ccb_dmat);
264 bus_dmamap_unload(bt->mailbox_dmat, bt->mailbox_dmamap);
266 bus_dmamem_free(bt->mailbox_dmat, bt->in_boxes,
268 bus_dmamap_destroy(bt->mailbox_dmat, bt->mailbox_dmamap);
270 bus_dma_tag_destroy(bt->buffer_dmat);
272 bus_dma_tag_destroy(bt->mailbox_dmat);
279 bt_port_probe(device_t dev, struct bt_probe_info *info)
281 struct bt_softc *bt = device_get_softc(dev);
282 config_data_t config_data;
285 /* See if there is really a card present */
286 if (bt_probe(dev) || bt_fetch_adapter_info(dev))
290 * Determine our IRQ, and DMA settings and
291 * export them to the configuration system.
293 error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
294 (u_int8_t*)&config_data, sizeof(config_data),
295 DEFAULT_CMD_TIMEOUT);
297 printf("bt_port_probe: Could not determine IRQ or DMA "
298 "settings for adapter.\n");
302 if (bt->model[0] == '5') {
303 /* DMA settings only make sense for ISA cards */
304 switch (config_data.dma_chan) {
315 printf("bt_port_probe: Invalid DMA setting "
316 "detected for adapter.\n");
320 /* VL/EISA/PCI DMA */
323 switch (config_data.irq) {
330 info->irq = ffs(config_data.irq) + 8;
333 printf("bt_port_probe: Invalid IRQ setting %x"
334 "detected for adapter.\n", config_data.irq);
341 * Probe the adapter and verify that the card is a BusLogic.
344 bt_probe(device_t dev)
346 struct bt_softc *bt = device_get_softc(dev);
347 esetup_info_data_t esetup_info;
355 * See if the three I/O ports look reasonable.
356 * Touch the minimal number of registers in the
359 status = bt_inb(bt, STATUS_REG);
361 || (status & (DIAG_ACTIVE|CMD_REG_BUSY|
362 STATUS_REG_RSVD|CMD_INVALID)) != 0) {
364 device_printf(dev, "Failed Status Reg Test - %x\n",
369 intstat = bt_inb(bt, INTSTAT_REG);
370 if ((intstat & INTSTAT_REG_RSVD) != 0) {
371 device_printf(dev, "Failed Intstat Reg Test\n");
375 geometry = bt_inb(bt, GEOMETRY_REG);
376 if (geometry == 0xFF) {
378 device_printf(dev, "Failed Geometry Reg Test\n");
383 * Looking good so far. Final test is to reset the
384 * adapter and attempt to fetch the extended setup
385 * information. This should filter out all 1542 cards.
387 if ((error = btreset(bt, /*hard_reset*/TRUE)) != 0) {
389 device_printf(dev, "Failed Reset\n");
393 param = sizeof(esetup_info);
394 error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, ¶m, /*parmlen*/1,
395 (u_int8_t*)&esetup_info, sizeof(esetup_info),
396 DEFAULT_CMD_TIMEOUT);
405 * Pull the boards setup information and record it in our softc.
408 bt_fetch_adapter_info(device_t dev)
410 struct bt_softc *bt = device_get_softc(dev);
411 board_id_data_t board_id;
412 esetup_info_data_t esetup_info;
413 config_data_t config_data;
415 u_int8_t length_param;
417 /* First record the firmware version */
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);
422 device_printf(dev, "bt_fetch_adapter_info - Failed Get Board Info\n");
425 bt->firmware_ver[0] = board_id.firmware_rev_major;
426 bt->firmware_ver[1] = '.';
427 bt->firmware_ver[2] = board_id.firmware_rev_minor;
428 bt->firmware_ver[3] = '\0';
431 * Depending on the firmware major and minor version,
432 * we may be able to fetch additional minor version info.
434 if (bt->firmware_ver[0] > '0') {
436 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_3DIG, NULL, /*parmlen*/0,
437 (u_int8_t*)&bt->firmware_ver[3], 1,
438 DEFAULT_CMD_TIMEOUT);
441 "bt_fetch_adapter_info - Failed Get "
442 "Firmware 3rd Digit\n");
445 if (bt->firmware_ver[3] == ' ')
446 bt->firmware_ver[3] = '\0';
447 bt->firmware_ver[4] = '\0';
450 if (strcmp(bt->firmware_ver, "3.3") >= 0) {
452 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_4DIG, NULL, /*parmlen*/0,
453 (u_int8_t*)&bt->firmware_ver[4], 1,
454 DEFAULT_CMD_TIMEOUT);
457 "bt_fetch_adapter_info - Failed Get "
458 "Firmware 4th Digit\n");
461 if (bt->firmware_ver[4] == ' ')
462 bt->firmware_ver[4] = '\0';
463 bt->firmware_ver[5] = '\0';
467 * Some boards do not handle the "recently documented"
468 * Inquire Board Model Number command correctly or do not give
469 * exact information. Use the Firmware and Extended Setup
470 * information in these cases to come up with the right answer.
471 * The major firmware revision number indicates:
473 * 5.xx BusLogic "W" Series Host Adapters:
475 * 4.xx BusLogic "C" Series Host Adapters:
476 * BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
477 * 3.xx BusLogic "S" Series Host Adapters:
478 * BT-747S/747D/757S/757D/445S/545S/542D
479 * BT-542B/742A (revision H)
480 * 2.xx BusLogic "A" Series Host Adapters:
481 * BT-542B/742A (revision G and below)
482 * 0.xx AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
484 length_param = sizeof(esetup_info);
485 error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &length_param, /*parmlen*/1,
486 (u_int8_t*)&esetup_info, sizeof(esetup_info),
487 DEFAULT_CMD_TIMEOUT);
492 bt->bios_addr = esetup_info.bios_addr << 12;
494 if (esetup_info.bus_type == 'A'
495 && bt->firmware_ver[0] == '2') {
496 snprintf(bt->model, sizeof(bt->model), "542B");
497 } else if (esetup_info.bus_type == 'E'
498 && (strncmp(bt->firmware_ver, "2.1", 3) == 0
499 || strncmp(bt->firmware_ver, "2.20", 4) == 0)) {
500 snprintf(bt->model, sizeof(bt->model), "742A");
501 } else if (esetup_info.bus_type == 'E'
502 && bt->firmware_ver[0] == '0') {
503 /* AMI FastDisk EISA Series 441 0.x */
504 snprintf(bt->model, sizeof(bt->model), "747A");
506 ha_model_data_t model_data;
509 length_param = sizeof(model_data);
510 error = bt_cmd(bt, BOP_INQUIRE_MODEL, &length_param, 1,
511 (u_int8_t*)&model_data, sizeof(model_data),
512 DEFAULT_CMD_TIMEOUT);
515 "bt_fetch_adapter_info - Failed Inquire "
519 for (i = 0; i < sizeof(model_data.ascii_model); i++) {
520 bt->model[i] = model_data.ascii_model[i];
521 if (bt->model[i] == ' ')
527 bt->level_trigger_ints = esetup_info.level_trigger_ints ? 1 : 0;
529 /* SG element limits */
530 bt->max_sg = esetup_info.max_sg;
532 /* Set feature flags */
533 bt->wide_bus = esetup_info.wide_bus;
534 bt->diff_bus = esetup_info.diff_bus;
535 bt->ultra_scsi = esetup_info.ultra_scsi;
537 if ((bt->firmware_ver[0] == '5')
538 || (bt->firmware_ver[0] == '4' && bt->wide_bus))
539 bt->extended_lun = TRUE;
541 bt->strict_rr = (strcmp(bt->firmware_ver, "3.31") >= 0);
544 ((bt_inb(bt, GEOMETRY_REG) & EXTENDED_TRANSLATION) != 0);
547 * Determine max CCB count and whether tagged queuing is
548 * available based on controller type. Tagged queuing
549 * only works on 'W' series adapters, 'C' series adapters
550 * with firmware of rev 4.42 and higher, and 'S' series
551 * adapters with firmware of rev 3.35 and higher. The
552 * maximum CCB counts are as follows:
554 * 192 BT-948/958/958D
555 * 100 BT-946C/956C/956CD/747C/757C/757CD/445C
557 * 30 BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
559 if (bt->firmware_ver[0] == '5') {
561 bt->tag_capable = TRUE;
562 } else if (bt->firmware_ver[0] == '4') {
563 if (bt->model[0] == '5')
567 bt->tag_capable = (strcmp(bt->firmware_ver, "4.22") >= 0);
570 if (bt->firmware_ver[0] == '3'
571 && (strcmp(bt->firmware_ver, "3.35") >= 0))
572 bt->tag_capable = TRUE;
574 bt->tag_capable = FALSE;
577 if (bt->tag_capable != FALSE)
578 bt->tags_permitted = ALL_TARGETS;
580 /* Determine Sync/Wide/Disc settings */
581 if (bt->firmware_ver[0] >= '4') {
582 auto_scsi_data_t auto_scsi_data;
583 fetch_lram_params_t fetch_lram_params;
587 * These settings are stored in the
588 * AutoSCSI data in LRAM of 'W' and 'C'
591 fetch_lram_params.offset = AUTO_SCSI_BYTE_OFFSET;
592 fetch_lram_params.response_len = sizeof(auto_scsi_data);
593 error = bt_cmd(bt, BOP_FETCH_LRAM,
594 (u_int8_t*)&fetch_lram_params,
595 sizeof(fetch_lram_params),
596 (u_int8_t*)&auto_scsi_data,
597 sizeof(auto_scsi_data), DEFAULT_CMD_TIMEOUT);
601 "bt_fetch_adapter_info - Failed "
602 "Get Auto SCSI Info\n");
606 bt->disc_permitted = auto_scsi_data.low_disc_permitted
607 | (auto_scsi_data.high_disc_permitted << 8);
608 bt->sync_permitted = auto_scsi_data.low_sync_permitted
609 | (auto_scsi_data.high_sync_permitted << 8);
610 bt->fast_permitted = auto_scsi_data.low_fast_permitted
611 | (auto_scsi_data.high_fast_permitted << 8);
612 bt->ultra_permitted = auto_scsi_data.low_ultra_permitted
613 | (auto_scsi_data.high_ultra_permitted << 8);
614 bt->wide_permitted = auto_scsi_data.low_wide_permitted
615 | (auto_scsi_data.high_wide_permitted << 8);
617 if (bt->ultra_scsi == FALSE)
618 bt->ultra_permitted = 0;
620 if (bt->wide_bus == FALSE)
621 bt->wide_permitted = 0;
624 * 'S' and 'A' series have this information in the setup
625 * information structure.
627 setup_data_t setup_info;
629 length_param = sizeof(setup_info);
630 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &length_param,
631 /*paramlen*/1, (u_int8_t*)&setup_info,
632 sizeof(setup_info), DEFAULT_CMD_TIMEOUT);
636 "bt_fetch_adapter_info - Failed "
641 if (setup_info.initiate_sync != 0) {
642 bt->sync_permitted = ALL_TARGETS;
644 if (bt->model[0] == '7') {
645 if (esetup_info.sync_neg10MB != 0)
646 bt->fast_permitted = ALL_TARGETS;
647 if (strcmp(bt->model, "757") == 0)
648 bt->wide_permitted = ALL_TARGETS;
651 bt->disc_permitted = ALL_TARGETS;
654 /* We need as many mailboxes as we can have ccbs */
655 bt->num_boxes = bt->max_ccbs;
657 /* Determine our SCSI ID */
659 error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
660 (u_int8_t*)&config_data, sizeof(config_data),
661 DEFAULT_CMD_TIMEOUT);
664 "bt_fetch_adapter_info - Failed Get Config\n");
667 bt->scsi_id = config_data.scsi_id;
673 * Start the board, ready for normal operation
676 bt_init(device_t dev)
678 struct bt_softc *bt = device_get_softc(dev);
680 /* Announce the Adapter */
681 device_printf(dev, "BT-%s FW Rev. %s ", bt->model, bt->firmware_ver);
683 if (bt->ultra_scsi != 0)
686 if (bt->wide_bus != 0)
691 if (bt->diff_bus != 0)
694 printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", bt->scsi_id,
698 * Create our DMA tags. These tags define the kinds of device
699 * accessible memory allocations and memory mappings we will
700 * need to perform during normal operation.
702 * Unless we need to further restrict the allocation, we rely
703 * on the restrictions of the parent dmat, hence the common
704 * use of MAXADDR and MAXSIZE.
707 /* DMA tag for mapping buffers into device visible space. */
708 if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1, /*boundary*/0,
709 /*lowaddr*/BUS_SPACE_MAXADDR,
710 /*highaddr*/BUS_SPACE_MAXADDR,
711 /*filter*/NULL, /*filterarg*/NULL,
712 /*maxsize*/MAXBSIZE, /*nsegments*/BT_NSEG,
713 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
714 /*flags*/BUS_DMA_ALLOCNOW,
715 &bt->buffer_dmat) != 0) {
720 /* DMA tag for our mailboxes */
721 if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1, /*boundary*/0,
722 /*lowaddr*/BUS_SPACE_MAXADDR,
723 /*highaddr*/BUS_SPACE_MAXADDR,
724 /*filter*/NULL, /*filterarg*/NULL,
725 bt->num_boxes * (sizeof(bt_mbox_in_t)
726 + sizeof(bt_mbox_out_t)),
728 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
729 /*flags*/0, &bt->mailbox_dmat) != 0) {
735 /* Allocation for our mailboxes */
736 if (bus_dmamem_alloc(bt->mailbox_dmat, (void **)&bt->out_boxes,
737 BUS_DMA_NOWAIT, &bt->mailbox_dmamap) != 0) {
743 /* And permanently map them */
744 bus_dmamap_load(bt->mailbox_dmat, bt->mailbox_dmamap,
746 bt->num_boxes * (sizeof(bt_mbox_in_t)
747 + sizeof(bt_mbox_out_t)),
748 btmapmboxes, bt, /*flags*/0);
752 bt->in_boxes = (bt_mbox_in_t *)&bt->out_boxes[bt->num_boxes];
756 /* DMA tag for our ccb structures */
757 if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1, /*boundary*/0,
758 /*lowaddr*/BUS_SPACE_MAXADDR,
759 /*highaddr*/BUS_SPACE_MAXADDR,
760 /*filter*/NULL, /*filterarg*/NULL,
761 bt->max_ccbs * sizeof(struct bt_ccb),
763 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
764 /*flags*/0, &bt->ccb_dmat) != 0) {
770 /* Allocation for our ccbs */
771 if (bus_dmamem_alloc(bt->ccb_dmat, (void **)&bt->bt_ccb_array,
772 BUS_DMA_NOWAIT, &bt->ccb_dmamap) != 0) {
778 /* And permanently map them */
779 bus_dmamap_load(bt->ccb_dmat, bt->ccb_dmamap,
781 bt->max_ccbs * sizeof(struct bt_ccb),
782 btmapccbs, bt, /*flags*/0);
786 /* DMA tag for our S/G structures. We allocate in page sized chunks */
787 if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1, /*boundary*/0,
788 /*lowaddr*/BUS_SPACE_MAXADDR,
789 /*highaddr*/BUS_SPACE_MAXADDR,
790 /*filter*/NULL, /*filterarg*/NULL,
791 PAGE_SIZE, /*nsegments*/1,
792 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
793 /*flags*/0, &bt->sg_dmat) != 0) {
799 /* Perform initial CCB allocation */
800 bzero(bt->bt_ccb_array, bt->max_ccbs * sizeof(struct bt_ccb));
803 if (bt->num_ccbs == 0) {
805 "bt_init - Unable to allocate initial ccbs\n");
810 * Note that we are going and return (to probe)
820 bt_attach(device_t dev)
822 struct bt_softc *bt = device_get_softc(dev);
823 int tagged_dev_openings;
824 struct cam_devq *devq;
828 * We reserve 1 ccb for error recovery, so don't
829 * tell the XPT about it.
831 if (bt->tag_capable != 0)
832 tagged_dev_openings = bt->max_ccbs - 1;
834 tagged_dev_openings = 0;
837 * Create the device queue for our SIM.
839 devq = cam_simq_alloc(bt->max_ccbs - 1);
844 * Construct our SIM entry
846 bt->sim = cam_sim_alloc(btaction, btpoll, "bt", bt, bt->unit,
847 2, tagged_dev_openings, devq);
848 cam_simq_release(devq);
852 if (xpt_bus_register(bt->sim, 0) != CAM_SUCCESS) {
853 cam_sim_free(bt->sim);
857 if (xpt_create_path(&bt->path, /*periph*/NULL,
858 cam_sim_path(bt->sim), CAM_TARGET_WILDCARD,
859 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
860 xpt_bus_deregister(cam_sim_path(bt->sim));
861 cam_sim_free(bt->sim);
868 error = bus_setup_intr(dev, bt->irq, INTR_TYPE_CAM,
869 bt_intr, bt, &bt->ih, NULL);
871 device_printf(dev, "bus_setup_intr() failed: %d\n", error);
879 bt_check_probed_iop(u_int ioport)
883 for (i = 0; i < BT_NUM_ISAPORTS; i++) {
884 if (bt_isa_ports[i].addr == ioport) {
885 if (bt_isa_ports[i].probed != 0)
896 bt_mark_probed_bio(isa_compat_io_t port)
898 if (port < BIO_DISABLED)
899 bt_mark_probed_iop(bt_board_ports[port]);
903 bt_mark_probed_iop(u_int ioport)
907 for (i = 0; i < BT_NUM_ISAPORTS; i++) {
908 if (ioport == bt_isa_ports[i].addr) {
909 bt_isa_ports[i].probed = 1;
916 bt_find_probe_range(int ioport, int *port_index, int *max_port_index)
921 for (i = 0;i < BT_NUM_ISAPORTS; i++)
922 if (ioport <= bt_isa_ports[i].addr)
924 if ((i >= BT_NUM_ISAPORTS)
925 || (ioport != bt_isa_ports[i].addr)) {
926 printf("\nbt_isa_probe: Invalid baseport of 0x%x specified.\n"
927 "bt_isa_probe: Nearest valid baseport is 0x%x.\n"
928 "bt_isa_probe: Failing probe.\n",
930 (i < BT_NUM_ISAPORTS)
931 ? bt_isa_ports[i].addr
932 : bt_isa_ports[BT_NUM_ISAPORTS - 1].addr);
933 *port_index = *max_port_index = -1;
936 *port_index = *max_port_index = bt_isa_ports[i].bio;
939 *max_port_index = BT_NUM_ISAPORTS - 1;
944 bt_iop_from_bio(isa_compat_io_t bio_index)
946 if (bio_index >= 0 && bio_index < BT_NUM_ISAPORTS)
947 return (bt_board_ports[bio_index]);
953 btallocccbs(struct bt_softc *bt)
955 struct bt_ccb *next_ccb;
956 struct sg_map_node *sg_map;
962 if (bt->num_ccbs >= bt->max_ccbs)
963 /* Can't allocate any more */
966 next_ccb = &bt->bt_ccb_array[bt->num_ccbs];
968 sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_WAITOK);
970 /* Allocate S/G space for the next batch of CCBS */
971 if (bus_dmamem_alloc(bt->sg_dmat, (void **)&sg_map->sg_vaddr,
972 BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) {
973 free(sg_map, M_DEVBUF);
977 SLIST_INSERT_HEAD(&bt->sg_maps, sg_map, links);
979 bus_dmamap_load(bt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr,
980 PAGE_SIZE, btmapsgs, bt, /*flags*/0);
982 segs = sg_map->sg_vaddr;
983 physaddr = sg_map->sg_physaddr;
985 newcount = (PAGE_SIZE / (BT_NSEG * sizeof(bt_sg_t)));
986 for (i = 0; bt->num_ccbs < bt->max_ccbs && i < newcount; i++) {
989 next_ccb->sg_list = segs;
990 next_ccb->sg_list_phys = physaddr;
991 next_ccb->flags = BCCB_FREE;
992 error = bus_dmamap_create(bt->buffer_dmat, /*flags*/0,
996 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, next_ccb, links);
998 physaddr += (BT_NSEG * sizeof(bt_sg_t));
1003 /* Reserve a CCB for error recovery */
1004 if (bt->recovery_bccb == NULL) {
1005 bt->recovery_bccb = SLIST_FIRST(&bt->free_bt_ccbs);
1006 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1009 if (SLIST_FIRST(&bt->free_bt_ccbs) != NULL)
1013 device_printf(bt->dev, "Can't malloc BCCBs\n");
1016 static __inline void
1017 btfreeccb(struct bt_softc *bt, struct bt_ccb *bccb)
1020 if ((bccb->flags & BCCB_ACTIVE) != 0)
1021 LIST_REMOVE(&bccb->ccb->ccb_h, sim_links.le);
1022 if (bt->resource_shortage != 0
1023 && (bccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
1024 bccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1025 bt->resource_shortage = FALSE;
1027 bccb->flags = BCCB_FREE;
1028 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, bccb, links);
1033 static __inline struct bt_ccb*
1034 btgetccb(struct bt_softc *bt)
1036 struct bt_ccb* bccb;
1039 if ((bccb = SLIST_FIRST(&bt->free_bt_ccbs)) != NULL) {
1040 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1044 bccb = SLIST_FIRST(&bt->free_bt_ccbs);
1046 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1056 btaction(struct cam_sim *sim, union ccb *ccb)
1058 struct bt_softc *bt;
1060 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("btaction\n"));
1062 bt = (struct bt_softc *)cam_sim_softc(sim);
1064 switch (ccb->ccb_h.func_code) {
1065 /* Common cases first */
1066 case XPT_SCSI_IO: /* Execute the requested I/O operation */
1067 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
1069 struct bt_ccb *bccb;
1070 struct bt_hccb *hccb;
1073 * get a bccb to use.
1075 if ((bccb = btgetccb(bt)) == NULL) {
1077 bt->resource_shortage = TRUE;
1079 xpt_freeze_simq(bt->sim, /*count*/1);
1080 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1088 * So we can find the BCCB when an abort is requested
1091 ccb->ccb_h.ccb_bccb_ptr = bccb;
1092 ccb->ccb_h.ccb_bt_ptr = bt;
1095 * Put all the arguments for the xfer in the bccb
1097 hccb->target_id = ccb->ccb_h.target_id;
1098 hccb->target_lun = ccb->ccb_h.target_lun;
1102 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
1103 struct ccb_scsiio *csio;
1104 struct ccb_hdr *ccbh;
1107 ccbh = &csio->ccb_h;
1108 hccb->opcode = INITIATOR_CCB_WRESID;
1109 hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0;
1110 hccb->dataout =(ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0;
1111 hccb->cmd_len = csio->cdb_len;
1112 if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) {
1113 ccb->ccb_h.status = CAM_REQ_INVALID;
1114 btfreeccb(bt, bccb);
1118 hccb->sense_len = csio->sense_len;
1119 if ((ccbh->flags & CAM_TAG_ACTION_VALID) != 0
1120 && ccb->csio.tag_action != CAM_TAG_ACTION_NONE) {
1121 hccb->tag_enable = TRUE;
1122 hccb->tag_type = (ccb->csio.tag_action & 0x3);
1124 hccb->tag_enable = FALSE;
1127 if ((ccbh->flags & CAM_CDB_POINTER) != 0) {
1128 if ((ccbh->flags & CAM_CDB_PHYS) == 0) {
1129 bcopy(csio->cdb_io.cdb_ptr,
1130 hccb->scsi_cdb, hccb->cmd_len);
1132 /* I guess I could map it in... */
1133 ccbh->status = CAM_REQ_INVALID;
1134 btfreeccb(bt, bccb);
1139 bcopy(csio->cdb_io.cdb_bytes,
1140 hccb->scsi_cdb, hccb->cmd_len);
1142 /* If need be, bounce our sense buffer */
1143 if (bt->sense_buffers != NULL) {
1144 hccb->sense_addr = btsensepaddr(bt, bccb);
1146 hccb->sense_addr = vtophys(&csio->sense_data);
1149 * If we have any data to send with this command,
1150 * map it into bus space.
1152 /* Only use S/G if there is a transfer */
1153 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1154 if ((ccbh->flags & CAM_SCATTER_VALID) == 0) {
1156 * We've been given a pointer
1157 * to a single buffer.
1159 if ((ccbh->flags & CAM_DATA_PHYS)==0) {
1163 error = bus_dmamap_load(
1171 if (error == EINPROGRESS) {
1174 * ordering, freeze the
1176 * until our mapping is
1179 xpt_freeze_simq(bt->sim,
1181 csio->ccb_h.status |=
1186 struct bus_dma_segment seg;
1188 /* Pointer to physical buffer */
1190 (bus_addr_t)csio->data_ptr;
1191 seg.ds_len = csio->dxfer_len;
1192 btexecuteccb(bccb, &seg, 1, 0);
1195 struct bus_dma_segment *segs;
1197 if ((ccbh->flags & CAM_DATA_PHYS) != 0)
1198 panic("btaction - Physical "
1202 if ((ccbh->flags&CAM_SG_LIST_PHYS)==0)
1203 panic("btaction - Virtual "
1204 "segment addresses "
1207 /* Just use the segments provided */
1208 segs = (struct bus_dma_segment *)
1210 btexecuteccb(bccb, segs,
1211 csio->sglist_cnt, 0);
1214 btexecuteccb(bccb, NULL, 0, 0);
1217 hccb->opcode = INITIATOR_BUS_DEV_RESET;
1218 /* No data transfer */
1219 hccb->datain = TRUE;
1220 hccb->dataout = TRUE;
1222 hccb->sense_len = 0;
1223 hccb->tag_enable = FALSE;
1225 btexecuteccb(bccb, NULL, 0, 0);
1229 case XPT_EN_LUN: /* Enable LUN as a target */
1230 case XPT_TARGET_IO: /* Execute target I/O request */
1231 case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
1232 case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/
1233 case XPT_ABORT: /* Abort the specified CCB */
1235 ccb->ccb_h.status = CAM_REQ_INVALID;
1238 case XPT_SET_TRAN_SETTINGS:
1241 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
1245 case XPT_GET_TRAN_SETTINGS:
1246 /* Get default/user set transfer settings for the target */
1248 struct ccb_trans_settings *cts;
1252 target_mask = 0x01 << ccb->ccb_h.target_id;
1253 if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
1255 if ((bt->disc_permitted & target_mask) != 0)
1256 cts->flags |= CCB_TRANS_DISC_ENB;
1257 if ((bt->tags_permitted & target_mask) != 0)
1258 cts->flags |= CCB_TRANS_TAG_ENB;
1259 if ((bt->wide_permitted & target_mask) != 0)
1260 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
1262 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
1263 if ((bt->ultra_permitted & target_mask) != 0)
1264 cts->sync_period = 12;
1265 else if ((bt->fast_permitted & target_mask) != 0)
1266 cts->sync_period = 25;
1267 else if ((bt->sync_permitted & target_mask) != 0)
1268 cts->sync_period = 50;
1270 cts->sync_period = 0;
1272 if (cts->sync_period != 0)
1273 cts->sync_offset = 15;
1275 cts->valid = CCB_TRANS_SYNC_RATE_VALID
1276 | CCB_TRANS_SYNC_OFFSET_VALID
1277 | CCB_TRANS_BUS_WIDTH_VALID
1278 | CCB_TRANS_DISC_VALID
1279 | CCB_TRANS_TQ_VALID;
1281 btfetchtransinfo(bt, cts);
1284 ccb->ccb_h.status = CAM_REQ_CMP;
1288 case XPT_CALC_GEOMETRY:
1290 struct ccb_calc_geometry *ccg;
1292 u_int32_t secs_per_cylinder;
1295 size_mb = ccg->volume_size
1296 / ((1024L * 1024L) / ccg->block_size);
1298 if (size_mb >= 1024 && (bt->extended_trans != 0)) {
1299 if (size_mb >= 2048) {
1301 ccg->secs_per_track = 63;
1304 ccg->secs_per_track = 32;
1308 ccg->secs_per_track = 32;
1310 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
1311 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
1312 ccb->ccb_h.status = CAM_REQ_CMP;
1316 case XPT_RESET_BUS: /* Reset the specified SCSI bus */
1318 btreset(bt, /*hardreset*/TRUE);
1319 ccb->ccb_h.status = CAM_REQ_CMP;
1323 case XPT_TERM_IO: /* Terminate the I/O process */
1325 ccb->ccb_h.status = CAM_REQ_INVALID;
1328 case XPT_PATH_INQ: /* Path routing inquiry */
1330 struct ccb_pathinq *cpi = &ccb->cpi;
1332 cpi->version_num = 1; /* XXX??? */
1333 cpi->hba_inquiry = PI_SDTR_ABLE;
1334 if (bt->tag_capable != 0)
1335 cpi->hba_inquiry |= PI_TAG_ABLE;
1336 if (bt->wide_bus != 0)
1337 cpi->hba_inquiry |= PI_WIDE_16;
1338 cpi->target_sprt = 0;
1340 cpi->hba_eng_cnt = 0;
1341 cpi->max_target = bt->wide_bus ? 15 : 7;
1343 cpi->initiator_id = bt->scsi_id;
1344 cpi->bus_id = cam_sim_bus(sim);
1345 cpi->base_transfer_speed = 3300;
1346 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
1347 strncpy(cpi->hba_vid, "BusLogic", HBA_IDLEN);
1348 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
1349 cpi->unit_number = cam_sim_unit(sim);
1350 cpi->ccb_h.status = CAM_REQ_CMP;
1355 ccb->ccb_h.status = CAM_REQ_INVALID;
1362 btexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
1364 struct bt_ccb *bccb;
1366 struct bt_softc *bt;
1368 bccb = (struct bt_ccb *)arg;
1370 bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
1374 device_printf(bt->dev,
1375 "Unexepected error 0x%x returned from "
1376 "bus_dmamap_load\n", error);
1377 if (ccb->ccb_h.status == CAM_REQ_INPROG) {
1378 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
1379 ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN;
1381 btfreeccb(bt, bccb);
1388 bus_dma_segment_t *end_seg;
1389 bus_dmasync_op_t op;
1391 end_seg = dm_segs + nseg;
1393 /* Copy the segments into our SG list */
1395 while (dm_segs < end_seg) {
1396 sg->len = dm_segs->ds_len;
1397 sg->addr = dm_segs->ds_addr;
1403 bccb->hccb.opcode = INITIATOR_SG_CCB_WRESID;
1404 bccb->hccb.data_len = sizeof(bt_sg_t) * nseg;
1405 bccb->hccb.data_addr = bccb->sg_list_phys;
1407 bccb->hccb.data_len = bccb->sg_list->len;
1408 bccb->hccb.data_addr = bccb->sg_list->addr;
1411 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1412 op = BUS_DMASYNC_PREREAD;
1414 op = BUS_DMASYNC_PREWRITE;
1416 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
1419 bccb->hccb.opcode = INITIATOR_CCB;
1420 bccb->hccb.data_len = 0;
1421 bccb->hccb.data_addr = 0;
1427 * Last time we need to check if this CCB needs to
1430 if (ccb->ccb_h.status != CAM_REQ_INPROG) {
1432 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1433 btfreeccb(bt, bccb);
1439 bccb->flags = BCCB_ACTIVE;
1440 ccb->ccb_h.status |= CAM_SIM_QUEUED;
1441 LIST_INSERT_HEAD(&bt->pending_ccbs, &ccb->ccb_h, sim_links.le);
1443 callout_reset(&ccb->ccb_h.timeout_ch, (ccb->ccb_h.timeout * hz) / 1000,
1446 /* Tell the adapter about this command */
1447 bt->cur_outbox->ccb_addr = btccbvtop(bt, bccb);
1448 if (bt->cur_outbox->action_code != BMBO_FREE) {
1450 * We should never encounter a busy mailbox.
1451 * If we do, warn the user, and treat it as
1452 * a resource shortage. If the controller is
1453 * hung, one of the pending transactions will
1454 * timeout causing us to start recovery operations.
1456 device_printf(bt->dev,
1457 "Encountered busy mailbox with %d out of %d "
1458 "commands active!!!\n", bt->active_ccbs,
1460 callout_stop(&ccb->ccb_h.timeout_ch);
1462 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1463 btfreeccb(bt, bccb);
1464 bt->resource_shortage = TRUE;
1465 xpt_freeze_simq(bt->sim, /*count*/1);
1466 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1470 bt->cur_outbox->action_code = BMBO_START;
1471 bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
1479 struct bt_softc *bt;
1482 bt = (struct bt_softc *)arg;
1483 while (((intstat = bt_inb(bt, INTSTAT_REG)) & INTR_PENDING) != 0) {
1485 if ((intstat & CMD_COMPLETE) != 0) {
1486 bt->latched_status = bt_inb(bt, STATUS_REG);
1487 bt->command_cmp = TRUE;
1490 bt_outb(bt, CONTROL_REG, RESET_INTR);
1492 if ((intstat & IMB_LOADED) != 0) {
1493 while (bt->cur_inbox->comp_code != BMBI_FREE) {
1495 btccbptov(bt, bt->cur_inbox->ccb_addr),
1496 bt->cur_inbox->comp_code);
1497 bt->cur_inbox->comp_code = BMBI_FREE;
1502 if ((intstat & SCSI_BUS_RESET) != 0) {
1503 btreset(bt, /*hardreset*/FALSE);
1509 btdone(struct bt_softc *bt, struct bt_ccb *bccb, bt_mbi_comp_code_t comp_code)
1512 struct ccb_scsiio *csio;
1515 csio = &bccb->ccb->csio;
1517 if ((bccb->flags & BCCB_ACTIVE) == 0) {
1518 device_printf(bt->dev,
1519 "btdone - Attempt to free non-active BCCB %p\n",
1524 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1525 bus_dmasync_op_t op;
1527 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1528 op = BUS_DMASYNC_POSTREAD;
1530 op = BUS_DMASYNC_POSTWRITE;
1531 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
1532 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1535 if (bccb == bt->recovery_bccb) {
1537 * The recovery BCCB does not have a CCB associated
1538 * with it, so short circuit the normal error handling.
1539 * We now traverse our list of pending CCBs and process
1540 * any that were terminated by the recovery CCBs action.
1541 * We also reinstate timeouts for all remaining, pending,
1544 struct cam_path *path;
1545 struct ccb_hdr *ccb_h;
1548 /* Notify all clients that a BDR occured */
1549 error = xpt_create_path(&path, /*periph*/NULL,
1550 cam_sim_path(bt->sim),
1551 bccb->hccb.target_id,
1554 if (error == CAM_REQ_CMP)
1555 xpt_async(AC_SENT_BDR, path, NULL);
1557 ccb_h = LIST_FIRST(&bt->pending_ccbs);
1558 while (ccb_h != NULL) {
1559 struct bt_ccb *pending_bccb;
1561 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
1562 if (pending_bccb->hccb.target_id
1563 == bccb->hccb.target_id) {
1564 pending_bccb->hccb.btstat = BTSTAT_HA_BDR;
1565 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1566 btdone(bt, pending_bccb, BMBI_ERROR);
1568 callout_reset(&ccb_h->timeout_ch,
1569 (ccb_h->timeout * hz) / 1000,
1570 bttimeout, pending_bccb);
1571 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1574 device_printf(bt->dev, "No longer in timeout\n");
1578 callout_stop(&ccb->ccb_h.timeout_ch);
1580 switch (comp_code) {
1582 device_printf(bt->dev,
1583 "btdone - CCB completed with free status!\n");
1585 case BMBI_NOT_FOUND:
1586 device_printf(bt->dev,
1587 "btdone - CCB Abort failed to find CCB\n");
1592 printf("bt: ccb %p - error %x occured. "
1593 "btstat = %x, sdstat = %x\n",
1594 (void *)bccb, comp_code, bccb->hccb.btstat,
1597 /* An error occured */
1598 switch(bccb->hccb.btstat) {
1599 case BTSTAT_DATARUN_ERROR:
1600 if (bccb->hccb.data_len == 0) {
1602 * At least firmware 4.22, does this
1603 * for a QUEUE FULL condition.
1605 bccb->hccb.sdstat = SCSI_STATUS_QUEUE_FULL;
1606 } else if (bccb->hccb.data_len < 0) {
1607 csio->ccb_h.status = CAM_DATA_RUN_ERR;
1611 case BTSTAT_NOERROR:
1612 case BTSTAT_LINKED_CMD_COMPLETE:
1613 case BTSTAT_LINKED_CMD_FLAG_COMPLETE:
1614 case BTSTAT_DATAUNDERUN_ERROR:
1616 csio->scsi_status = bccb->hccb.sdstat;
1617 csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
1618 switch(csio->scsi_status) {
1619 case SCSI_STATUS_CHECK_COND:
1620 case SCSI_STATUS_CMD_TERMINATED:
1621 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
1622 /* Bounce sense back if necessary */
1623 if (bt->sense_buffers != NULL) {
1625 *btsensevaddr(bt, bccb);
1630 case SCSI_STATUS_OK:
1631 csio->ccb_h.status = CAM_REQ_CMP;
1634 csio->resid = bccb->hccb.data_len;
1636 case BTSTAT_SELTIMEOUT:
1637 csio->ccb_h.status = CAM_SEL_TIMEOUT;
1639 case BTSTAT_UNEXPECTED_BUSFREE:
1640 csio->ccb_h.status = CAM_UNEXP_BUSFREE;
1642 case BTSTAT_INVALID_PHASE:
1643 csio->ccb_h.status = CAM_SEQUENCE_FAIL;
1645 case BTSTAT_INVALID_ACTION_CODE:
1646 panic("%s: Inavlid Action code", bt_name(bt));
1648 case BTSTAT_INVALID_OPCODE:
1649 panic("%s: Inavlid CCB Opcode code", bt_name(bt));
1651 case BTSTAT_LINKED_CCB_LUN_MISMATCH:
1652 /* We don't even support linked commands... */
1653 panic("%s: Linked CCB Lun Mismatch", bt_name(bt));
1655 case BTSTAT_INVALID_CCB_OR_SG_PARAM:
1656 panic("%s: Invalid CCB or SG list", bt_name(bt));
1658 case BTSTAT_AUTOSENSE_FAILED:
1659 csio->ccb_h.status = CAM_AUTOSENSE_FAIL;
1661 case BTSTAT_TAGGED_MSG_REJECTED:
1663 struct ccb_trans_settings neg;
1665 xpt_print_path(csio->ccb_h.path);
1666 printf("refuses tagged commands. Performing "
1667 "non-tagged I/O\n");
1669 neg.valid = CCB_TRANS_TQ_VALID;
1670 xpt_setup_ccb(&neg.ccb_h, csio->ccb_h.path,
1672 xpt_async(AC_TRANSFER_NEG, csio->ccb_h.path, &neg);
1673 bt->tags_permitted &= ~(0x01 << csio->ccb_h.target_id);
1674 csio->ccb_h.status = CAM_MSG_REJECT_REC;
1677 case BTSTAT_UNSUPPORTED_MSG_RECEIVED:
1679 * XXX You would think that this is
1680 * a recoverable error... Hmmm.
1682 csio->ccb_h.status = CAM_REQ_CMP_ERR;
1684 case BTSTAT_HA_SOFTWARE_ERROR:
1685 case BTSTAT_HA_WATCHDOG_ERROR:
1686 case BTSTAT_HARDWARE_FAILURE:
1687 /* Hardware reset ??? Can we recover ??? */
1688 csio->ccb_h.status = CAM_NO_HBA;
1690 case BTSTAT_TARGET_IGNORED_ATN:
1691 case BTSTAT_OTHER_SCSI_BUS_RESET:
1692 case BTSTAT_HA_SCSI_BUS_RESET:
1693 if ((csio->ccb_h.status & CAM_STATUS_MASK)
1695 csio->ccb_h.status = CAM_SCSI_BUS_RESET;
1698 if ((bccb->flags & BCCB_DEVICE_RESET) == 0)
1699 csio->ccb_h.status = CAM_BDR_SENT;
1701 csio->ccb_h.status = CAM_CMD_TIMEOUT;
1703 case BTSTAT_INVALID_RECONNECT:
1704 case BTSTAT_ABORT_QUEUE_GENERATED:
1705 csio->ccb_h.status = CAM_REQ_TERMIO;
1707 case BTSTAT_SCSI_PERROR_DETECTED:
1708 csio->ccb_h.status = CAM_UNCOR_PARITY;
1711 if (csio->ccb_h.status != CAM_REQ_CMP) {
1712 xpt_freeze_devq(csio->ccb_h.path, /*count*/1);
1713 csio->ccb_h.status |= CAM_DEV_QFRZN;
1715 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
1716 ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1717 btfreeccb(bt, bccb);
1721 /* All completed without incident */
1722 ccb->ccb_h.status |= CAM_REQ_CMP;
1723 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
1724 ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1725 btfreeccb(bt, bccb);
1732 btreset(struct bt_softc* bt, int hard_reset)
1734 struct ccb_hdr *ccb_h;
1737 u_int8_t reset_type;
1739 if (hard_reset != 0)
1740 reset_type = HARD_RESET;
1742 reset_type = SOFT_RESET;
1743 bt_outb(bt, CONTROL_REG, reset_type);
1745 /* Wait 5sec. for Diagnostic start */
1746 timeout = 5 * 10000;
1748 status = bt_inb(bt, STATUS_REG);
1749 if ((status & DIAG_ACTIVE) != 0)
1755 printf("%s: btreset - Diagnostic Active failed to "
1756 "assert. status = 0x%x\n", bt_name(bt), status);
1760 /* Wait 10sec. for Diagnostic end */
1761 timeout = 10 * 10000;
1763 status = bt_inb(bt, STATUS_REG);
1764 if ((status & DIAG_ACTIVE) == 0)
1769 panic("%s: btreset - Diagnostic Active failed to drop. "
1770 "status = 0x%x\n", bt_name(bt), status);
1774 /* Wait for the host adapter to become ready or report a failure */
1777 status = bt_inb(bt, STATUS_REG);
1778 if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0)
1783 printf("%s: btreset - Host adapter failed to come ready. "
1784 "status = 0x%x\n", bt_name(bt), status);
1788 /* If the diagnostics failed, tell the user */
1789 if ((status & DIAG_FAIL) != 0
1790 || (status & HA_READY) == 0) {
1791 printf("%s: btreset - Adapter failed diagnostics\n",
1794 if ((status & DATAIN_REG_READY) != 0)
1795 printf("%s: btreset - Host Adapter Error code = 0x%x\n",
1796 bt_name(bt), bt_inb(bt, DATAIN_REG));
1800 /* If we've allocated mailboxes, initialize them */
1801 if (bt->init_level > 4)
1804 /* If we've attached to the XPT, tell it about the event */
1805 if (bt->path != NULL)
1806 xpt_async(AC_BUS_RESET, bt->path, NULL);
1809 * Perform completion processing for all outstanding CCBs.
1811 while ((ccb_h = LIST_FIRST(&bt->pending_ccbs)) != NULL) {
1812 struct bt_ccb *pending_bccb;
1814 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
1815 pending_bccb->hccb.btstat = BTSTAT_HA_SCSI_BUS_RESET;
1816 btdone(bt, pending_bccb, BMBI_ERROR);
1823 * Send a command to the adapter.
1826 bt_cmd(struct bt_softc *bt, bt_op_t opcode, u_int8_t *params, u_int param_len,
1827 u_int8_t *reply_data, u_int reply_len, u_int cmd_timeout)
1833 u_int reply_buf_size;
1837 /* No data returned to start */
1838 reply_buf_size = reply_len;
1845 bt->command_cmp = 0;
1847 * Wait up to 10 sec. for the adapter to become
1848 * ready to accept commands.
1852 status = bt_inb(bt, STATUS_REG);
1853 if ((status & HA_READY) != 0
1854 && (status & CMD_REG_BUSY) == 0)
1857 * Throw away any pending data which may be
1858 * left over from earlier commands that we
1861 if ((status & DATAIN_REG_READY) != 0)
1862 (void)bt_inb(bt, DATAIN_REG);
1866 printf("%s: bt_cmd: Timeout waiting for adapter ready, "
1867 "status = 0x%x\n", bt_name(bt), status);
1872 * Send the opcode followed by any necessary parameter bytes.
1874 bt_outb(bt, COMMAND_REG, opcode);
1877 * Wait for up to 1sec for each byte of the the
1878 * parameter list sent to be sent.
1881 while (param_len && --timeout) {
1884 status = bt_inb(bt, STATUS_REG);
1885 intstat = bt_inb(bt, INTSTAT_REG);
1888 if ((intstat & (INTR_PENDING|CMD_COMPLETE))
1889 == (INTR_PENDING|CMD_COMPLETE)) {
1890 saved_status = status;
1894 if (bt->command_cmp != 0) {
1895 saved_status = bt->latched_status;
1899 if ((status & DATAIN_REG_READY) != 0)
1901 if ((status & CMD_REG_BUSY) == 0) {
1902 bt_outb(bt, COMMAND_REG, *params++);
1908 printf("%s: bt_cmd: Timeout sending parameters, "
1909 "status = 0x%x\n", bt_name(bt), status);
1911 saved_status = status;
1916 * Wait for the command to complete.
1918 while (cmd_complete == 0 && --cmd_timeout) {
1921 status = bt_inb(bt, STATUS_REG);
1922 intstat = bt_inb(bt, INTSTAT_REG);
1924 * It may be that this command was issued with
1925 * controller interrupts disabled. We'll never
1926 * get to our command if an incoming mailbox
1927 * interrupt is pending, so take care of completed
1928 * mailbox commands by calling our interrupt handler.
1930 if ((intstat & (INTR_PENDING|IMB_LOADED))
1931 == (INTR_PENDING|IMB_LOADED))
1935 if (bt->command_cmp != 0) {
1937 * Our interrupt handler saw CMD_COMPLETE
1938 * status before we did.
1941 saved_status = bt->latched_status;
1942 } else if ((intstat & (INTR_PENDING|CMD_COMPLETE))
1943 == (INTR_PENDING|CMD_COMPLETE)) {
1945 * Our poll (in case interrupts are blocked)
1946 * saw the CMD_COMPLETE interrupt.
1949 saved_status = status;
1950 } else if (opcode == BOP_MODIFY_IO_ADDR
1951 && (status & CMD_REG_BUSY) == 0) {
1953 * The BOP_MODIFY_IO_ADDR does not issue a CMD_COMPLETE,
1954 * but it should update the status register. So, we
1955 * consider this command complete when the CMD_REG_BUSY
1958 saved_status = status;
1960 } else if ((status & DATAIN_REG_READY) != 0) {
1963 data = bt_inb(bt, DATAIN_REG);
1964 if (reply_len < reply_buf_size) {
1965 *reply_data++ = data;
1967 printf("%s: bt_cmd - Discarded reply data byte "
1968 "for opcode 0x%x\n", bt_name(bt),
1972 * Reset timeout to ensure at least a second
1973 * between response bytes.
1975 cmd_timeout = MAX(cmd_timeout, 10000);
1978 } else if ((opcode == BOP_FETCH_LRAM)
1979 && (status & HA_READY) != 0) {
1980 saved_status = status;
1985 if (cmd_timeout == 0) {
1986 printf("%s: bt_cmd: Timeout waiting for command (%x) "
1987 "to complete.\n%s: status = 0x%x, intstat = 0x%x, "
1988 "rlen %d\n", bt_name(bt), opcode,
1989 bt_name(bt), status, intstat, reply_len);
1990 error = (ETIMEDOUT);
1994 * Clear any pending interrupts. Block interrupts so our
1995 * interrupt handler is not re-entered.
2005 * If the command was rejected by the controller, tell the caller.
2007 if ((saved_status & CMD_INVALID) != 0) {
2009 * Some early adapters may not recover properly from
2010 * an invalid command. If it appears that the controller
2011 * has wedged (i.e. status was not cleared by our interrupt
2012 * reset above), perform a soft reset.
2015 printf("%s: Invalid Command 0x%x\n", bt_name(bt),
2018 status = bt_inb(bt, STATUS_REG);
2019 if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY|
2020 CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0
2021 || (status & (HA_READY|INIT_REQUIRED))
2022 != (HA_READY|INIT_REQUIRED)) {
2023 btreset(bt, /*hard_reset*/FALSE);
2028 if (param_len > 0) {
2029 /* The controller did not accept the full argument list */
2033 if (reply_len != reply_buf_size) {
2034 /* Too much or too little data received */
2038 /* We were successful */
2043 btinitmboxes(struct bt_softc *bt) {
2044 init_32b_mbox_params_t init_mbox;
2047 bzero(bt->in_boxes, sizeof(bt_mbox_in_t) * bt->num_boxes);
2048 bzero(bt->out_boxes, sizeof(bt_mbox_out_t) * bt->num_boxes);
2049 bt->cur_inbox = bt->in_boxes;
2050 bt->last_inbox = bt->in_boxes + bt->num_boxes - 1;
2051 bt->cur_outbox = bt->out_boxes;
2052 bt->last_outbox = bt->out_boxes + bt->num_boxes - 1;
2054 /* Tell the adapter about them */
2055 init_mbox.num_boxes = bt->num_boxes;
2056 init_mbox.base_addr[0] = bt->mailbox_physbase & 0xFF;
2057 init_mbox.base_addr[1] = (bt->mailbox_physbase >> 8) & 0xFF;
2058 init_mbox.base_addr[2] = (bt->mailbox_physbase >> 16) & 0xFF;
2059 init_mbox.base_addr[3] = (bt->mailbox_physbase >> 24) & 0xFF;
2060 error = bt_cmd(bt, BOP_INITIALIZE_32BMBOX, (u_int8_t *)&init_mbox,
2061 /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL,
2062 /*reply_len*/0, DEFAULT_CMD_TIMEOUT);
2065 printf("btinitmboxes: Initialization command failed\n");
2066 else if (bt->strict_rr != 0) {
2068 * If the controller supports
2069 * strict round robin mode,
2075 error = bt_cmd(bt, BOP_ENABLE_STRICT_RR, ¶m, 1,
2076 /*reply_buf*/NULL, /*reply_len*/0,
2077 DEFAULT_CMD_TIMEOUT);
2080 printf("btinitmboxes: Unable to enable strict RR\n");
2082 } else if (bootverbose) {
2083 printf("%s: Using Strict Round Robin Mailbox Mode\n",
2092 * Update the XPT's idea of the negotiated transfer
2093 * parameters for a particular target.
2096 btfetchtransinfo(struct bt_softc *bt, struct ccb_trans_settings* cts)
2098 setup_data_t setup_info;
2105 targ_syncinfo_t sync_info;
2107 target = cts->ccb_h.target_id;
2108 targ_offset = (target & 0x7);
2109 targ_mask = (0x01 << targ_offset);
2112 * Inquire Setup Information. This command retreives the
2113 * Wide negotiation status for recent adapters as well as
2114 * the sync info for older models.
2116 param = sizeof(setup_info);
2117 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, ¶m, /*paramlen*/1,
2118 (u_int8_t*)&setup_info, sizeof(setup_info),
2119 DEFAULT_CMD_TIMEOUT);
2122 printf("%s: btfetchtransinfo - Inquire Setup Info Failed %x\n",
2123 bt_name(bt), error);
2128 sync_info = (target < 8) ? setup_info.low_syncinfo[targ_offset]
2129 : setup_info.high_syncinfo[targ_offset];
2131 if (sync_info.sync == 0)
2132 cts->sync_offset = 0;
2134 cts->sync_offset = sync_info.offset;
2136 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2137 if (strcmp(bt->firmware_ver, "5.06L") >= 0) {
2141 (target < 8) ? (setup_info.low_wide_active & targ_mask)
2142 : (setup_info.high_wide_active & targ_mask);
2145 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2146 } else if ((bt->wide_permitted & targ_mask) != 0) {
2147 struct ccb_getdev cgd;
2150 * Prior to rev 5.06L, wide status isn't provided,
2151 * so we "guess" that wide transfers are in effect
2152 * if the user settings allow for wide and the inquiry
2153 * data for the device indicates that it can handle
2156 xpt_setup_ccb(&cgd.ccb_h, cts->ccb_h.path, /*priority*/1);
2157 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2158 xpt_action((union ccb *)&cgd);
2159 if ((cgd.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
2160 && (cgd.inq_data.flags & SID_WBus16) != 0)
2161 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2164 if (bt->firmware_ver[0] >= '3') {
2166 * For adapters that can do fast or ultra speeds,
2167 * use the more exact Target Sync Information command.
2169 target_sync_info_data_t sync_info;
2171 param = sizeof(sync_info);
2172 error = bt_cmd(bt, BOP_TARG_SYNC_INFO, ¶m, /*paramlen*/1,
2173 (u_int8_t*)&sync_info, sizeof(sync_info),
2174 DEFAULT_CMD_TIMEOUT);
2177 printf("%s: btfetchtransinfo - Inquire Sync "
2178 "Info Failed 0x%x\n", bt_name(bt), error);
2182 sync_period = sync_info.sync_rate[target] * 100;
2184 sync_period = 2000 + (500 * sync_info.period);
2187 /* Convert ns value to standard SCSI sync rate */
2188 if (cts->sync_offset != 0)
2189 cts->sync_period = scsi_calc_syncparam(sync_period);
2191 cts->sync_period = 0;
2193 cts->valid = CCB_TRANS_SYNC_RATE_VALID
2194 | CCB_TRANS_SYNC_OFFSET_VALID
2195 | CCB_TRANS_BUS_WIDTH_VALID;
2196 xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts);
2200 btmapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2202 struct bt_softc* bt;
2204 bt = (struct bt_softc*)arg;
2205 bt->mailbox_physbase = segs->ds_addr;
2209 btmapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2211 struct bt_softc* bt;
2213 bt = (struct bt_softc*)arg;
2214 bt->bt_ccb_physbase = segs->ds_addr;
2218 btmapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2221 struct bt_softc* bt;
2223 bt = (struct bt_softc*)arg;
2224 SLIST_FIRST(&bt->sg_maps)->sg_physaddr = segs->ds_addr;
2228 btpoll(struct cam_sim *sim)
2230 bt_intr(cam_sim_softc(sim));
2234 bttimeout(void *arg)
2236 struct bt_ccb *bccb;
2238 struct bt_softc *bt;
2240 bccb = (struct bt_ccb *)arg;
2242 bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
2243 xpt_print_path(ccb->ccb_h.path);
2244 printf("CCB %p - timed out\n", (void *)bccb);
2248 if ((bccb->flags & BCCB_ACTIVE) == 0) {
2249 xpt_print_path(ccb->ccb_h.path);
2250 printf("CCB %p - timed out CCB already completed\n",
2257 * In order to simplify the recovery process, we ask the XPT
2258 * layer to halt the queue of new transactions and we traverse
2259 * the list of pending CCBs and remove their timeouts. This
2260 * means that the driver attempts to clear only one error
2261 * condition at a time. In general, timeouts that occur
2262 * close together are related anyway, so there is no benefit
2263 * in attempting to handle errors in parrallel. Timeouts will
2264 * be reinstated when the recovery process ends.
2266 if ((bccb->flags & BCCB_DEVICE_RESET) == 0) {
2267 struct ccb_hdr *ccb_h;
2269 if ((bccb->flags & BCCB_RELEASE_SIMQ) == 0) {
2270 xpt_freeze_simq(bt->sim, /*count*/1);
2271 bccb->flags |= BCCB_RELEASE_SIMQ;
2274 ccb_h = LIST_FIRST(&bt->pending_ccbs);
2275 while (ccb_h != NULL) {
2276 struct bt_ccb *pending_bccb;
2278 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
2279 callout_stop(&ccb_h->timeout_ch);
2280 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
2284 if ((bccb->flags & BCCB_DEVICE_RESET) != 0
2285 || bt->cur_outbox->action_code != BMBO_FREE
2286 || ((bccb->hccb.tag_enable == TRUE)
2287 && (bt->firmware_ver[0] < '5'))) {
2289 * Try a full host adapter/SCSI bus reset.
2290 * We do this only if we have already attempted
2291 * to clear the condition with a BDR, or we cannot
2292 * attempt a BDR for lack of mailbox resources
2293 * or because of faulty firmware. It turns out
2294 * that firmware versions prior to 5.xx treat BDRs
2295 * as untagged commands that cannot be sent until
2296 * all outstanding tagged commands have been processed.
2297 * This makes it somewhat difficult to use a BDR to
2298 * clear up a problem with an uncompleted tagged command.
2300 ccb->ccb_h.status = CAM_CMD_TIMEOUT;
2301 btreset(bt, /*hardreset*/TRUE);
2302 printf("%s: No longer in timeout\n", bt_name(bt));
2305 * Send a Bus Device Reset message:
2306 * The target that is holding up the bus may not
2307 * be the same as the one that triggered this timeout
2308 * (different commands have different timeout lengths),
2309 * but we have no way of determining this from our
2310 * timeout handler. Our strategy here is to queue a
2311 * BDR message to the target of the timed out command.
2312 * If this fails, we'll get another timeout 2 seconds
2313 * later which will attempt a bus reset.
2315 bccb->flags |= BCCB_DEVICE_RESET;
2316 callout_reset(&ccb->ccb_h.timeout_ch, 2 * hz, bttimeout, bccb);
2318 bt->recovery_bccb->hccb.opcode = INITIATOR_BUS_DEV_RESET;
2320 /* No Data Transfer */
2321 bt->recovery_bccb->hccb.datain = TRUE;
2322 bt->recovery_bccb->hccb.dataout = TRUE;
2323 bt->recovery_bccb->hccb.btstat = 0;
2324 bt->recovery_bccb->hccb.sdstat = 0;
2325 bt->recovery_bccb->hccb.target_id = ccb->ccb_h.target_id;
2327 /* Tell the adapter about this command */
2328 bt->cur_outbox->ccb_addr = btccbvtop(bt, bt->recovery_bccb);
2329 bt->cur_outbox->action_code = BMBO_START;
2330 bt_outb(bt, COMMAND_REG, BOP_START_MBOX);