/* * Generic driver for the BusLogic MultiMaster SCSI host adapters * Product specific probe and attach routines can be found in: * sys/dev/buslogic/bt_isa.c BT-54X, BT-445 cards * sys/dev/buslogic/bt_mca.c BT-64X, SDC3211B, SDC3211F * sys/dev/buslogic/bt_eisa.c BT-74X, BT-75x cards, SDC3222F * sys/dev/buslogic/bt_pci.c BT-946, BT-948, BT-956, BT-958 cards * * Copyright (c) 1998, 1999 Justin T. Gibbs. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * Special thanks to Leonard N. Zubkoff for writing such a complete and * well documented Mylex/BusLogic MultiMaster driver for Linux. Support * in this driver for the wide range of MultiMaster controllers and * firmware revisions, with their otherwise undocumented quirks, would not * have been possible without his efforts. */ #include #include #include #include #include #include /* * XXX It appears that BusLogic PCI adapters go out to lunch if you * attempt to perform memory mapped I/O. */ #if 0 #include "pci.h" #if NPCI > 0 #include #endif #endif #include #include #include #include #include #include #include #include #include #include #include #include #ifndef MAX #define MAX(a, b) ((a) > (b) ? (a) : (b)) #endif /* MailBox Management functions */ static __inline void btnextinbox(struct bt_softc *bt); static __inline void btnextoutbox(struct bt_softc *bt); static __inline void btnextinbox(struct bt_softc *bt) { if (bt->cur_inbox == bt->last_inbox) bt->cur_inbox = bt->in_boxes; else bt->cur_inbox++; } static __inline void btnextoutbox(struct bt_softc *bt) { if (bt->cur_outbox == bt->last_outbox) bt->cur_outbox = bt->out_boxes; else bt->cur_outbox++; } /* CCB Mangement functions */ static __inline u_int32_t btccbvtop(struct bt_softc *bt, struct bt_ccb *bccb); static __inline struct bt_ccb* btccbptov(struct bt_softc *bt, u_int32_t ccb_addr); static __inline u_int32_t btsensepaddr(struct bt_softc *bt, struct bt_ccb *bccb); static __inline struct scsi_sense_data* btsensevaddr(struct bt_softc *bt, struct bt_ccb *bccb); static __inline u_int32_t btccbvtop(struct bt_softc *bt, struct bt_ccb *bccb) { return (bt->bt_ccb_physbase + (u_int32_t)((caddr_t)bccb - (caddr_t)bt->bt_ccb_array)); } static __inline struct bt_ccb * btccbptov(struct bt_softc *bt, u_int32_t ccb_addr) { return (bt->bt_ccb_array + ((struct bt_ccb*)ccb_addr-(struct bt_ccb*)bt->bt_ccb_physbase)); } static __inline u_int32_t btsensepaddr(struct bt_softc *bt, struct bt_ccb *bccb) { u_int index; index = (u_int)(bccb - bt->bt_ccb_array); return (bt->sense_buffers_physbase + (index * sizeof(struct scsi_sense_data))); } static __inline struct scsi_sense_data * btsensevaddr(struct bt_softc *bt, struct bt_ccb *bccb) { u_int index; index = (u_int)(bccb - bt->bt_ccb_array); return (bt->sense_buffers + index); } static __inline struct bt_ccb* btgetccb(struct bt_softc *bt); static __inline void btfreeccb(struct bt_softc *bt, struct bt_ccb *bccb); static void btallocccbs(struct bt_softc *bt); static bus_dmamap_callback_t btexecuteccb; static void btdone(struct bt_softc *bt, struct bt_ccb *bccb, bt_mbi_comp_code_t comp_code); /* Host adapter command functions */ static int btreset(struct bt_softc* bt, int hard_reset); /* Initialization functions */ static int btinitmboxes(struct bt_softc *bt); static bus_dmamap_callback_t btmapmboxes; static bus_dmamap_callback_t btmapccbs; static bus_dmamap_callback_t btmapsgs; /* Transfer Negotiation Functions */ static void btfetchtransinfo(struct bt_softc *bt, struct ccb_trans_settings *cts); /* CAM SIM entry points */ #define ccb_bccb_ptr spriv_ptr0 #define ccb_bt_ptr spriv_ptr1 static void btaction(struct cam_sim *sim, union ccb *ccb); static void btpoll(struct cam_sim *sim); /* Our timeout handler */ timeout_t bttimeout; u_long bt_unit = 0; /* * XXX * Do our own re-probe protection until a configuration * manager can do it for us. This ensures that we don't * reprobe a card already found by the EISA or PCI probes. */ struct bt_isa_port bt_isa_ports[] = { { 0x130, 0, 4 }, { 0x134, 0, 5 }, { 0x230, 0, 2 }, { 0x234, 0, 3 }, { 0x330, 0, 0 }, { 0x334, 0, 1 } }; /* * I/O ports listed in the order enumerated by the * card for certain op codes. */ u_int16_t bt_board_ports[] = { 0x330, 0x334, 0x230, 0x234, 0x130, 0x134 }; /* Exported functions */ void bt_init_softc(device_t dev, struct resource *port, struct resource *irq, struct resource *drq) { struct bt_softc *bt = device_get_softc(dev); SLIST_INIT(&bt->free_bt_ccbs); LIST_INIT(&bt->pending_ccbs); SLIST_INIT(&bt->sg_maps); bt->dev = dev; bt->unit = device_get_unit(dev); bt->port = port; bt->irq = irq; bt->drq = drq; bt->tag = rman_get_bustag(port); bt->bsh = rman_get_bushandle(port); } void bt_free_softc(device_t dev) { struct bt_softc *bt = device_get_softc(dev); switch (bt->init_level) { default: case 11: bus_dmamap_unload(bt->sense_dmat, bt->sense_dmamap); case 10: bus_dmamem_free(bt->sense_dmat, bt->sense_buffers, bt->sense_dmamap); case 9: bus_dma_tag_destroy(bt->sense_dmat); case 8: { struct sg_map_node *sg_map; while ((sg_map = SLIST_FIRST(&bt->sg_maps))!= NULL) { SLIST_REMOVE_HEAD(&bt->sg_maps, links); bus_dmamap_unload(bt->sg_dmat, sg_map->sg_dmamap); bus_dmamem_free(bt->sg_dmat, sg_map->sg_vaddr, sg_map->sg_dmamap); free(sg_map, M_DEVBUF); } bus_dma_tag_destroy(bt->sg_dmat); } case 7: bus_dmamap_unload(bt->ccb_dmat, bt->ccb_dmamap); case 6: bus_dmamem_free(bt->ccb_dmat, bt->bt_ccb_array, bt->ccb_dmamap); bus_dmamap_destroy(bt->ccb_dmat, bt->ccb_dmamap); case 5: bus_dma_tag_destroy(bt->ccb_dmat); case 4: bus_dmamap_unload(bt->mailbox_dmat, bt->mailbox_dmamap); case 3: bus_dmamem_free(bt->mailbox_dmat, bt->in_boxes, bt->mailbox_dmamap); bus_dmamap_destroy(bt->mailbox_dmat, bt->mailbox_dmamap); case 2: bus_dma_tag_destroy(bt->buffer_dmat); case 1: bus_dma_tag_destroy(bt->mailbox_dmat); case 0: break; } } int bt_port_probe(device_t dev, struct bt_probe_info *info) { struct bt_softc *bt = device_get_softc(dev); config_data_t config_data; int error; /* See if there is really a card present */ if (bt_probe(dev) || bt_fetch_adapter_info(dev)) return(1); /* * Determine our IRQ, and DMA settings and * export them to the configuration system. */ error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0, (u_int8_t*)&config_data, sizeof(config_data), DEFAULT_CMD_TIMEOUT); if (error != 0) { printf("bt_port_probe: Could not determine IRQ or DMA " "settings for adapter.\n"); return (1); } if (bt->model[0] == '5') { /* DMA settings only make sense for ISA cards */ switch (config_data.dma_chan) { case DMA_CHAN_5: info->drq = 5; break; case DMA_CHAN_6: info->drq = 6; break; case DMA_CHAN_7: info->drq = 7; break; default: printf("bt_port_probe: Invalid DMA setting " "detected for adapter.\n"); return (1); } } else { /* VL/EISA/PCI DMA */ info->drq = -1; } switch (config_data.irq) { case IRQ_9: case IRQ_10: case IRQ_11: case IRQ_12: case IRQ_14: case IRQ_15: info->irq = ffs(config_data.irq) + 8; break; default: printf("bt_port_probe: Invalid IRQ setting %x" "detected for adapter.\n", config_data.irq); return (1); } return (0); } /* * Probe the adapter and verify that the card is a BusLogic. */ int bt_probe(device_t dev) { struct bt_softc *bt = device_get_softc(dev); esetup_info_data_t esetup_info; u_int status; u_int intstat; u_int geometry; int error; u_int8_t param; /* * See if the three I/O ports look reasonable. * Touch the minimal number of registers in the * failure case. */ status = bt_inb(bt, STATUS_REG); if ((status == 0) || (status & (DIAG_ACTIVE|CMD_REG_BUSY| STATUS_REG_RSVD|CMD_INVALID)) != 0) { if (bootverbose) device_printf(dev, "Failed Status Reg Test - %x\n", status); return (ENXIO); } intstat = bt_inb(bt, INTSTAT_REG); if ((intstat & INTSTAT_REG_RSVD) != 0) { device_printf(dev, "Failed Intstat Reg Test\n"); return (ENXIO); } geometry = bt_inb(bt, GEOMETRY_REG); if (geometry == 0xFF) { if (bootverbose) device_printf(dev, "Failed Geometry Reg Test\n"); return (ENXIO); } /* * Looking good so far. Final test is to reset the * adapter and attempt to fetch the extended setup * information. This should filter out all 1542 cards. */ if ((error = btreset(bt, /*hard_reset*/TRUE)) != 0) { if (bootverbose) device_printf(dev, "Failed Reset\n"); return (ENXIO); } param = sizeof(esetup_info); error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, ¶m, /*parmlen*/1, (u_int8_t*)&esetup_info, sizeof(esetup_info), DEFAULT_CMD_TIMEOUT); if (error != 0) { return (ENXIO); } return (0); } /* * Pull the boards setup information and record it in our softc. */ int bt_fetch_adapter_info(device_t dev) { struct bt_softc *bt = device_get_softc(dev); board_id_data_t board_id; esetup_info_data_t esetup_info; config_data_t config_data; int error; u_int8_t length_param; /* First record the firmware version */ error = bt_cmd(bt, BOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0, (u_int8_t*)&board_id, sizeof(board_id), DEFAULT_CMD_TIMEOUT); if (error != 0) { device_printf(dev, "bt_fetch_adapter_info - Failed Get Board Info\n"); return (error); } bt->firmware_ver[0] = board_id.firmware_rev_major; bt->firmware_ver[1] = '.'; bt->firmware_ver[2] = board_id.firmware_rev_minor; bt->firmware_ver[3] = '\0'; /* * Depending on the firmware major and minor version, * we may be able to fetch additional minor version info. */ if (bt->firmware_ver[0] > '0') { error = bt_cmd(bt, BOP_INQUIRE_FW_VER_3DIG, NULL, /*parmlen*/0, (u_int8_t*)&bt->firmware_ver[3], 1, DEFAULT_CMD_TIMEOUT); if (error != 0) { device_printf(dev, "bt_fetch_adapter_info - Failed Get " "Firmware 3rd Digit\n"); return (error); } if (bt->firmware_ver[3] == ' ') bt->firmware_ver[3] = '\0'; bt->firmware_ver[4] = '\0'; } if (strcmp(bt->firmware_ver, "3.3") >= 0) { error = bt_cmd(bt, BOP_INQUIRE_FW_VER_4DIG, NULL, /*parmlen*/0, (u_int8_t*)&bt->firmware_ver[4], 1, DEFAULT_CMD_TIMEOUT); if (error != 0) { device_printf(dev, "bt_fetch_adapter_info - Failed Get " "Firmware 4th Digit\n"); return (error); } if (bt->firmware_ver[4] == ' ') bt->firmware_ver[4] = '\0'; bt->firmware_ver[5] = '\0'; } /* * Some boards do not handle the "recently documented" * Inquire Board Model Number command correctly or do not give * exact information. Use the Firmware and Extended Setup * information in these cases to come up with the right answer. * The major firmware revision number indicates: * * 5.xx BusLogic "W" Series Host Adapters: * BT-948/958/958D * 4.xx BusLogic "C" Series Host Adapters: * BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF * 3.xx BusLogic "S" Series Host Adapters: * BT-747S/747D/757S/757D/445S/545S/542D * BT-542B/742A (revision H) * 2.xx BusLogic "A" Series Host Adapters: * BT-542B/742A (revision G and below) * 0.xx AMI FastDisk VLB/EISA BusLogic Clone Host Adapter */ length_param = sizeof(esetup_info); error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &length_param, /*parmlen*/1, (u_int8_t*)&esetup_info, sizeof(esetup_info), DEFAULT_CMD_TIMEOUT); if (error != 0) { return (error); } bt->bios_addr = esetup_info.bios_addr << 12; bt->mailbox_addrlimit = BUS_SPACE_MAXADDR; if (esetup_info.bus_type == 'A' && bt->firmware_ver[0] == '2') { snprintf(bt->model, sizeof(bt->model), "542B"); } else if (esetup_info.bus_type == 'E' && bt->firmware_ver[0] == '2') { /* * The 742A seems to object if its mailboxes are * allocated above the 16MB mark. */ bt->mailbox_addrlimit = BUS_SPACE_MAXADDR_24BIT; snprintf(bt->model, sizeof(bt->model), "742A"); } else if (esetup_info.bus_type == 'E' && bt->firmware_ver[0] == '0') { /* AMI FastDisk EISA Series 441 0.x */ snprintf(bt->model, sizeof(bt->model), "747A"); } else { ha_model_data_t model_data; int i; length_param = sizeof(model_data); error = bt_cmd(bt, BOP_INQUIRE_MODEL, &length_param, 1, (u_int8_t*)&model_data, sizeof(model_data), DEFAULT_CMD_TIMEOUT); if (error != 0) { device_printf(dev, "bt_fetch_adapter_info - Failed Inquire " "Model Number\n"); return (error); } for (i = 0; i < sizeof(model_data.ascii_model); i++) { bt->model[i] = model_data.ascii_model[i]; if (bt->model[i] == ' ') break; } bt->model[i] = '\0'; } bt->level_trigger_ints = esetup_info.level_trigger_ints ? 1 : 0; /* SG element limits */ bt->max_sg = esetup_info.max_sg; /* Set feature flags */ bt->wide_bus = esetup_info.wide_bus; bt->diff_bus = esetup_info.diff_bus; bt->ultra_scsi = esetup_info.ultra_scsi; if ((bt->firmware_ver[0] == '5') || (bt->firmware_ver[0] == '4' && bt->wide_bus)) bt->extended_lun = TRUE; bt->strict_rr = (strcmp(bt->firmware_ver, "3.31") >= 0); bt->extended_trans = ((bt_inb(bt, GEOMETRY_REG) & EXTENDED_TRANSLATION) != 0); /* * Determine max CCB count and whether tagged queuing is * available based on controller type. Tagged queuing * only works on 'W' series adapters, 'C' series adapters * with firmware of rev 4.42 and higher, and 'S' series * adapters with firmware of rev 3.35 and higher. The * maximum CCB counts are as follows: * * 192 BT-948/958/958D * 100 BT-946C/956C/956CD/747C/757C/757CD/445C * 50 BT-545C/540CF * 30 BT-747S/747D/757S/757D/445S/545S/542D/542B/742A */ if (bt->firmware_ver[0] == '5') { bt->max_ccbs = 192; bt->tag_capable = TRUE; } else if (bt->firmware_ver[0] == '4') { if (bt->model[0] == '5') bt->max_ccbs = 50; else bt->max_ccbs = 100; bt->tag_capable = (strcmp(bt->firmware_ver, "4.22") >= 0); } else { bt->max_ccbs = 30; if (bt->firmware_ver[0] == '3' && (strcmp(bt->firmware_ver, "3.35") >= 0)) bt->tag_capable = TRUE; else bt->tag_capable = FALSE; } if (bt->tag_capable != FALSE) bt->tags_permitted = ALL_TARGETS; /* Determine Sync/Wide/Disc settings */ if (bt->firmware_ver[0] >= '4') { auto_scsi_data_t auto_scsi_data; fetch_lram_params_t fetch_lram_params; int error; /* * These settings are stored in the * AutoSCSI data in LRAM of 'W' and 'C' * adapters. */ fetch_lram_params.offset = AUTO_SCSI_BYTE_OFFSET; fetch_lram_params.response_len = sizeof(auto_scsi_data); error = bt_cmd(bt, BOP_FETCH_LRAM, (u_int8_t*)&fetch_lram_params, sizeof(fetch_lram_params), (u_int8_t*)&auto_scsi_data, sizeof(auto_scsi_data), DEFAULT_CMD_TIMEOUT); if (error != 0) { device_printf(dev, "bt_fetch_adapter_info - Failed " "Get Auto SCSI Info\n"); return (error); } bt->disc_permitted = auto_scsi_data.low_disc_permitted | (auto_scsi_data.high_disc_permitted << 8); bt->sync_permitted = auto_scsi_data.low_sync_permitted | (auto_scsi_data.high_sync_permitted << 8); bt->fast_permitted = auto_scsi_data.low_fast_permitted | (auto_scsi_data.high_fast_permitted << 8); bt->ultra_permitted = auto_scsi_data.low_ultra_permitted | (auto_scsi_data.high_ultra_permitted << 8); bt->wide_permitted = auto_scsi_data.low_wide_permitted | (auto_scsi_data.high_wide_permitted << 8); if (bt->ultra_scsi == FALSE) bt->ultra_permitted = 0; if (bt->wide_bus == FALSE) bt->wide_permitted = 0; } else { /* * 'S' and 'A' series have this information in the setup * information structure. */ setup_data_t setup_info; length_param = sizeof(setup_info); error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &length_param, /*paramlen*/1, (u_int8_t*)&setup_info, sizeof(setup_info), DEFAULT_CMD_TIMEOUT); if (error != 0) { device_printf(dev, "bt_fetch_adapter_info - Failed " "Get Setup Info\n"); return (error); } if (setup_info.initiate_sync != 0) { bt->sync_permitted = ALL_TARGETS; if (bt->model[0] == '7') { if (esetup_info.sync_neg10MB != 0) bt->fast_permitted = ALL_TARGETS; if (strcmp(bt->model, "757") == 0) bt->wide_permitted = ALL_TARGETS; } } bt->disc_permitted = ALL_TARGETS; } /* We need as many mailboxes as we can have ccbs */ bt->num_boxes = bt->max_ccbs; /* Determine our SCSI ID */ error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0, (u_int8_t*)&config_data, sizeof(config_data), DEFAULT_CMD_TIMEOUT); if (error != 0) { device_printf(dev, "bt_fetch_adapter_info - Failed Get Config\n"); return (error); } bt->scsi_id = config_data.scsi_id; return (0); } /* * Start the board, ready for normal operation */ int bt_init(device_t dev) { struct bt_softc *bt = device_get_softc(dev); /* Announce the Adapter */ device_printf(dev, "BT-%s FW Rev. %s ", bt->model, bt->firmware_ver); if (bt->ultra_scsi != 0) printf("Ultra "); if (bt->wide_bus != 0) printf("Wide "); else printf("Narrow "); if (bt->diff_bus != 0) printf("Diff "); printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", bt->scsi_id, bt->max_ccbs); /* * Create our DMA tags. These tags define the kinds of device * accessible memory allocations and memory mappings we will * need to perform during normal operation. * * Unless we need to further restrict the allocation, we rely * on the restrictions of the parent dmat, hence the common * use of MAXADDR and MAXSIZE. */ /* DMA tag for mapping buffers into device visible space. */ if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1, /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR, /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL, /*maxsize*/MAXBSIZE, /*nsegments*/BT_NSEG, /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/BUS_DMA_ALLOCNOW, &bt->buffer_dmat) != 0) { goto error_exit; } bt->init_level++; /* DMA tag for our mailboxes */ if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1, /*boundary*/0, /*lowaddr*/bt->mailbox_addrlimit, /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL, bt->num_boxes * (sizeof(bt_mbox_in_t) + sizeof(bt_mbox_out_t)), /*nsegments*/1, /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/0, &bt->mailbox_dmat) != 0) { goto error_exit; } bt->init_level++; /* Allocation for our mailboxes */ if (bus_dmamem_alloc(bt->mailbox_dmat, (void **)&bt->out_boxes, BUS_DMA_NOWAIT, &bt->mailbox_dmamap) != 0) { goto error_exit; } bt->init_level++; /* And permanently map them */ bus_dmamap_load(bt->mailbox_dmat, bt->mailbox_dmamap, bt->out_boxes, bt->num_boxes * (sizeof(bt_mbox_in_t) + sizeof(bt_mbox_out_t)), btmapmboxes, bt, /*flags*/0); bt->init_level++; bt->in_boxes = (bt_mbox_in_t *)&bt->out_boxes[bt->num_boxes]; btinitmboxes(bt); /* DMA tag for our ccb structures */ if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1, /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR, /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL, bt->max_ccbs * sizeof(struct bt_ccb), /*nsegments*/1, /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/0, &bt->ccb_dmat) != 0) { goto error_exit; } bt->init_level++; /* Allocation for our ccbs */ if (bus_dmamem_alloc(bt->ccb_dmat, (void **)&bt->bt_ccb_array, BUS_DMA_NOWAIT, &bt->ccb_dmamap) != 0) { goto error_exit; } bt->init_level++; /* And permanently map them */ bus_dmamap_load(bt->ccb_dmat, bt->ccb_dmamap, bt->bt_ccb_array, bt->max_ccbs * sizeof(struct bt_ccb), btmapccbs, bt, /*flags*/0); bt->init_level++; /* DMA tag for our S/G structures. We allocate in page sized chunks */ if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1, /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR, /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL, PAGE_SIZE, /*nsegments*/1, /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/0, &bt->sg_dmat) != 0) { goto error_exit; } bt->init_level++; /* Perform initial CCB allocation */ bzero(bt->bt_ccb_array, bt->max_ccbs * sizeof(struct bt_ccb)); btallocccbs(bt); if (bt->num_ccbs == 0) { device_printf(dev, "bt_init - Unable to allocate initial ccbs\n"); goto error_exit; } /* * Note that we are going and return (to probe) */ return 0; error_exit: return (ENXIO); } int bt_attach(device_t dev) { struct bt_softc *bt = device_get_softc(dev); int tagged_dev_openings; struct cam_devq *devq; int error; /* * We reserve 1 ccb for error recovery, so don't * tell the XPT about it. */ if (bt->tag_capable != 0) tagged_dev_openings = bt->max_ccbs - 1; else tagged_dev_openings = 0; /* * Create the device queue for our SIM. */ devq = cam_simq_alloc(bt->max_ccbs - 1); if (devq == NULL) return (ENOMEM); /* * Construct our SIM entry */ bt->sim = cam_sim_alloc(btaction, btpoll, "bt", bt, bt->unit, 2, tagged_dev_openings, devq); if (bt->sim == NULL) { cam_simq_free(devq); return (ENOMEM); } if (xpt_bus_register(bt->sim, 0) != CAM_SUCCESS) { cam_sim_free(bt->sim, /*free_devq*/TRUE); return (ENXIO); } if (xpt_create_path(&bt->path, /*periph*/NULL, cam_sim_path(bt->sim), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { xpt_bus_deregister(cam_sim_path(bt->sim)); cam_sim_free(bt->sim, /*free_devq*/TRUE); return (ENXIO); } /* * Setup interrupt. */ error = bus_setup_intr(dev, bt->irq, INTR_TYPE_CAM|INTR_ENTROPY, bt_intr, bt, &bt->ih); if (error) { device_printf(dev, "bus_setup_intr() failed: %d\n", error); return (error); } return (0); } int bt_check_probed_iop(u_int ioport) { u_int i; for (i = 0; i < BT_NUM_ISAPORTS; i++) { if (bt_isa_ports[i].addr == ioport) { if (bt_isa_ports[i].probed != 0) return (1); else { return (0); } } } return (1); } void bt_mark_probed_bio(isa_compat_io_t port) { if (port < BIO_DISABLED) bt_mark_probed_iop(bt_board_ports[port]); } void bt_mark_probed_iop(u_int ioport) { u_int i; for (i = 0; i < BT_NUM_ISAPORTS; i++) { if (ioport == bt_isa_ports[i].addr) { bt_isa_ports[i].probed = 1; break; } } } void bt_find_probe_range(int ioport, int *port_index, int *max_port_index) { if (ioport > 0) { int i; for (i = 0;i < BT_NUM_ISAPORTS; i++) if (ioport <= bt_isa_ports[i].addr) break; if ((i >= BT_NUM_ISAPORTS) || (ioport != bt_isa_ports[i].addr)) { printf(" bt_isa_probe: Invalid baseport of 0x%x specified. bt_isa_probe: Nearest valid baseport is 0x%x. bt_isa_probe: Failing probe.\n", ioport, (i < BT_NUM_ISAPORTS) ? bt_isa_ports[i].addr : bt_isa_ports[BT_NUM_ISAPORTS - 1].addr); *port_index = *max_port_index = -1; return; } *port_index = *max_port_index = bt_isa_ports[i].bio; } else { *port_index = 0; *max_port_index = BT_NUM_ISAPORTS - 1; } } int bt_iop_from_bio(isa_compat_io_t bio_index) { if (bio_index >= 0 && bio_index < BT_NUM_ISAPORTS) return (bt_board_ports[bio_index]); return (-1); } static void btallocccbs(struct bt_softc *bt) { struct bt_ccb *next_ccb; struct sg_map_node *sg_map; bus_addr_t physaddr; bt_sg_t *segs; int newcount; int i; if (bt->num_ccbs >= bt->max_ccbs) /* Can't allocate any more */ return; next_ccb = &bt->bt_ccb_array[bt->num_ccbs]; sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT); if (sg_map == NULL) goto error_exit; /* Allocate S/G space for the next batch of CCBS */ if (bus_dmamem_alloc(bt->sg_dmat, (void **)&sg_map->sg_vaddr, BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) { free(sg_map, M_DEVBUF); goto error_exit; } SLIST_INSERT_HEAD(&bt->sg_maps, sg_map, links); bus_dmamap_load(bt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr, PAGE_SIZE, btmapsgs, bt, /*flags*/0); segs = sg_map->sg_vaddr; physaddr = sg_map->sg_physaddr; newcount = (PAGE_SIZE / (BT_NSEG * sizeof(bt_sg_t))); for (i = 0; bt->num_ccbs < bt->max_ccbs && i < newcount; i++) { int error; next_ccb->sg_list = segs; next_ccb->sg_list_phys = physaddr; next_ccb->flags = BCCB_FREE; error = bus_dmamap_create(bt->buffer_dmat, /*flags*/0, &next_ccb->dmamap); if (error != 0) break; SLIST_INSERT_HEAD(&bt->free_bt_ccbs, next_ccb, links); segs += BT_NSEG; physaddr += (BT_NSEG * sizeof(bt_sg_t)); next_ccb++; bt->num_ccbs++; } /* Reserve a CCB for error recovery */ if (bt->recovery_bccb == NULL) { bt->recovery_bccb = SLIST_FIRST(&bt->free_bt_ccbs); SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links); } if (SLIST_FIRST(&bt->free_bt_ccbs) != NULL) return; error_exit: device_printf(bt->dev, "Can't malloc BCCBs\n"); } static __inline void btfreeccb(struct bt_softc *bt, struct bt_ccb *bccb) { int s; s = splcam(); if ((bccb->flags & BCCB_ACTIVE) != 0) LIST_REMOVE(&bccb->ccb->ccb_h, sim_links.le); if (bt->resource_shortage != 0 && (bccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { bccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ; bt->resource_shortage = FALSE; } bccb->flags = BCCB_FREE; SLIST_INSERT_HEAD(&bt->free_bt_ccbs, bccb, links); bt->active_ccbs--; splx(s); } static __inline struct bt_ccb* btgetccb(struct bt_softc *bt) { struct bt_ccb* bccb; int s; s = splcam(); if ((bccb = SLIST_FIRST(&bt->free_bt_ccbs)) != NULL) { SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links); bt->active_ccbs++; } else { btallocccbs(bt); bccb = SLIST_FIRST(&bt->free_bt_ccbs); if (bccb != NULL) { SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links); bt->active_ccbs++; } } splx(s); return (bccb); } static void btaction(struct cam_sim *sim, union ccb *ccb) { struct bt_softc *bt; CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("btaction\n")); bt = (struct bt_softc *)cam_sim_softc(sim); switch (ccb->ccb_h.func_code) { /* Common cases first */ case XPT_SCSI_IO: /* Execute the requested I/O operation */ case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */ { struct bt_ccb *bccb; struct bt_hccb *hccb; /* * get a bccb to use. */ if ((bccb = btgetccb(bt)) == NULL) { int s; s = splcam(); bt->resource_shortage = TRUE; splx(s); xpt_freeze_simq(bt->sim, /*count*/1); ccb->ccb_h.status = CAM_REQUEUE_REQ; xpt_done(ccb); return; } hccb = &bccb->hccb; /* * So we can find the BCCB when an abort is requested */ bccb->ccb = ccb; ccb->ccb_h.ccb_bccb_ptr = bccb; ccb->ccb_h.ccb_bt_ptr = bt; /* * Put all the arguments for the xfer in the bccb */ hccb->target_id = ccb->ccb_h.target_id; hccb->target_lun = ccb->ccb_h.target_lun; hccb->btstat = 0; hccb->sdstat = 0; if (ccb->ccb_h.func_code == XPT_SCSI_IO) { struct ccb_scsiio *csio; struct ccb_hdr *ccbh; csio = &ccb->csio; ccbh = &csio->ccb_h; hccb->opcode = INITIATOR_CCB_WRESID; hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0; hccb->dataout =(ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0; hccb->cmd_len = csio->cdb_len; if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) { ccb->ccb_h.status = CAM_REQ_INVALID; btfreeccb(bt, bccb); xpt_done(ccb); return; } hccb->sense_len = csio->sense_len; if ((ccbh->flags & CAM_TAG_ACTION_VALID) != 0 && ccb->csio.tag_action != CAM_TAG_ACTION_NONE) { hccb->tag_enable = TRUE; hccb->tag_type = (ccb->csio.tag_action & 0x3); } else { hccb->tag_enable = FALSE; hccb->tag_type = 0; } if ((ccbh->flags & CAM_CDB_POINTER) != 0) { if ((ccbh->flags & CAM_CDB_PHYS) == 0) { bcopy(csio->cdb_io.cdb_ptr, hccb->scsi_cdb, hccb->cmd_len); } else { /* I guess I could map it in... */ ccbh->status = CAM_REQ_INVALID; btfreeccb(bt, bccb); xpt_done(ccb); return; } } else { bcopy(csio->cdb_io.cdb_bytes, hccb->scsi_cdb, hccb->cmd_len); } /* If need be, bounce our sense buffer */ if (bt->sense_buffers != NULL) { hccb->sense_addr = btsensepaddr(bt, bccb); } else { hccb->sense_addr = vtophys(&csio->sense_data); } /* * If we have any data to send with this command, * map it into bus space. */ /* Only use S/G if there is a transfer */ if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { if ((ccbh->flags & CAM_SCATTER_VALID) == 0) { /* * We've been given a pointer * to a single buffer. */ if ((ccbh->flags & CAM_DATA_PHYS)==0) { int s; int error; s = splsoftvm(); error = bus_dmamap_load( bt->buffer_dmat, bccb->dmamap, csio->data_ptr, csio->dxfer_len, btexecuteccb, bccb, /*flags*/0); if (error == EINPROGRESS) { /* * So as to maintain * ordering, freeze the * controller queue * until our mapping is * returned. */ xpt_freeze_simq(bt->sim, 1); csio->ccb_h.status |= CAM_RELEASE_SIMQ; } splx(s); } else { struct bus_dma_segment seg; /* Pointer to physical buffer */ seg.ds_addr = (bus_addr_t)csio->data_ptr; seg.ds_len = csio->dxfer_len; btexecuteccb(bccb, &seg, 1, 0); } } else { struct bus_dma_segment *segs; if ((ccbh->flags & CAM_DATA_PHYS) != 0) panic("btaction - Physical " "segment pointers " "unsupported"); if ((ccbh->flags&CAM_SG_LIST_PHYS)==0) panic("btaction - Virtual " "segment addresses " "unsupported"); /* Just use the segments provided */ segs = (struct bus_dma_segment *) csio->data_ptr; btexecuteccb(bccb, segs, csio->sglist_cnt, 0); } } else { btexecuteccb(bccb, NULL, 0, 0); } } else { hccb->opcode = INITIATOR_BUS_DEV_RESET; /* No data transfer */ hccb->datain = TRUE; hccb->dataout = TRUE; hccb->cmd_len = 0; hccb->sense_len = 0; hccb->tag_enable = FALSE; hccb->tag_type = 0; btexecuteccb(bccb, NULL, 0, 0); } break; } case XPT_EN_LUN: /* Enable LUN as a target */ case XPT_TARGET_IO: /* Execute target I/O request */ case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */ case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/ case XPT_ABORT: /* Abort the specified CCB */ /* XXX Implement */ ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; case XPT_SET_TRAN_SETTINGS: { /* XXX Implement */ ccb->ccb_h.status = CAM_PROVIDE_FAIL; xpt_done(ccb); break; } case XPT_GET_TRAN_SETTINGS: /* Get default/user set transfer settings for the target */ { struct ccb_trans_settings *cts; u_int target_mask; cts = &ccb->cts; target_mask = 0x01 << ccb->ccb_h.target_id; #ifdef CAM_NEW_TRAN_CODE if (cts->type == CTS_TYPE_CURRENT_SETTINGS) { struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; cts->protocol = PROTO_SCSI; cts->protocol_version = SCSI_REV_2; cts->transport = XPORT_SPI; cts->transport_version = 2; scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; if ((bt->disc_permitted & target_mask) != 0) spi->flags |= CTS_SPI_FLAGS_DISC_ENB; if ((bt->tags_permitted & target_mask) != 0) scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; if ((bt->ultra_permitted & target_mask) != 0) spi->sync_period = 12; else if ((bt->fast_permitted & target_mask) != 0) spi->sync_period = 25; else if ((bt->sync_permitted & target_mask) != 0) spi->sync_period = 50; else spi->sync_period = 0; if (spi->sync_period != 0) spi->sync_offset = 15; spi->valid |= CTS_SPI_VALID_SYNC_RATE; spi->valid |= CTS_SPI_VALID_SYNC_OFFSET; spi->valid |= CTS_SPI_VALID_BUS_WIDTH; if ((bt->wide_permitted & target_mask) != 0) spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; else spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) { scsi->valid = CTS_SCSI_VALID_TQ; spi->valid |= CTS_SPI_VALID_DISC; } else scsi->valid = 0; } else { #else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) { cts->flags = 0; if ((bt->disc_permitted & target_mask) != 0) cts->flags |= CCB_TRANS_DISC_ENB; if ((bt->tags_permitted & target_mask) != 0) cts->flags |= CCB_TRANS_TAG_ENB; if ((bt->wide_permitted & target_mask) != 0) cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT; else cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; if ((bt->ultra_permitted & target_mask) != 0) cts->sync_period = 12; else if ((bt->fast_permitted & target_mask) != 0) cts->sync_period = 25; else if ((bt->sync_permitted & target_mask) != 0) cts->sync_period = 50; else cts->sync_period = 0; if (cts->sync_period != 0) cts->sync_offset = 15; cts->valid = CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_SYNC_OFFSET_VALID | CCB_TRANS_BUS_WIDTH_VALID | CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID; } else { #endif btfetchtransinfo(bt, cts); } ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_CALC_GEOMETRY: { struct ccb_calc_geometry *ccg; u_int32_t size_mb; u_int32_t secs_per_cylinder; ccg = &ccb->ccg; size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size); if (size_mb >= 1024 && (bt->extended_trans != 0)) { if (size_mb >= 2048) { ccg->heads = 255; ccg->secs_per_track = 63; } else { ccg->heads = 128; ccg->secs_per_track = 32; } } else { ccg->heads = 64; ccg->secs_per_track = 32; } secs_per_cylinder = ccg->heads * ccg->secs_per_track; ccg->cylinders = ccg->volume_size / secs_per_cylinder; ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_RESET_BUS: /* Reset the specified SCSI bus */ { btreset(bt, /*hardreset*/TRUE); ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_TERM_IO: /* Terminate the I/O process */ /* XXX Implement */ ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; case XPT_PATH_INQ: /* Path routing inquiry */ { struct ccb_pathinq *cpi = &ccb->cpi; cpi->version_num = 1; /* XXX??? */ cpi->hba_inquiry = PI_SDTR_ABLE; if (bt->tag_capable != 0) cpi->hba_inquiry |= PI_TAG_ABLE; if (bt->wide_bus != 0) cpi->hba_inquiry |= PI_WIDE_16; cpi->target_sprt = 0; cpi->hba_misc = 0; cpi->hba_eng_cnt = 0; cpi->max_target = bt->wide_bus ? 15 : 7; cpi->max_lun = 7; cpi->initiator_id = bt->scsi_id; cpi->bus_id = cam_sim_bus(sim); cpi->base_transfer_speed = 3300; strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); strncpy(cpi->hba_vid, "BusLogic", HBA_IDLEN); strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); cpi->unit_number = cam_sim_unit(sim); cpi->ccb_h.status = CAM_REQ_CMP; #ifdef CAM_NEW_TRAN_CODE cpi->transport = XPORT_SPI; cpi->transport_version = 2; cpi->protocol = PROTO_SCSI; cpi->protocol_version = SCSI_REV_2; #endif xpt_done(ccb); break; } default: ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; } } static void btexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) { struct bt_ccb *bccb; union ccb *ccb; struct bt_softc *bt; int s; bccb = (struct bt_ccb *)arg; ccb = bccb->ccb; bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr; if (error != 0) { if (error != EFBIG) device_printf(bt->dev, "Unexepected error 0x%x returned from " "bus_dmamap_load\n", error); if (ccb->ccb_h.status == CAM_REQ_INPROG) { xpt_freeze_devq(ccb->ccb_h.path, /*count*/1); ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN; } btfreeccb(bt, bccb); xpt_done(ccb); return; } if (nseg != 0) { bt_sg_t *sg; bus_dma_segment_t *end_seg; bus_dmasync_op_t op; end_seg = dm_segs + nseg; /* Copy the segments into our SG list */ sg = bccb->sg_list; while (dm_segs < end_seg) { sg->len = dm_segs->ds_len; sg->addr = dm_segs->ds_addr; sg++; dm_segs++; } if (nseg > 1) { bccb->hccb.opcode = INITIATOR_SG_CCB_WRESID; bccb->hccb.data_len = sizeof(bt_sg_t) * nseg; bccb->hccb.data_addr = bccb->sg_list_phys; } else { bccb->hccb.data_len = bccb->sg_list->len; bccb->hccb.data_addr = bccb->sg_list->addr; } if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) op = BUS_DMASYNC_PREREAD; else op = BUS_DMASYNC_PREWRITE; bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op); } else { bccb->hccb.opcode = INITIATOR_CCB; bccb->hccb.data_len = 0; bccb->hccb.data_addr = 0; } s = splcam(); /* * Last time we need to check if this CCB needs to * be aborted. */ if (ccb->ccb_h.status != CAM_REQ_INPROG) { if (nseg != 0) bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap); btfreeccb(bt, bccb); xpt_done(ccb); splx(s); return; } bccb->flags = BCCB_ACTIVE; ccb->ccb_h.status |= CAM_SIM_QUEUED; LIST_INSERT_HEAD(&bt->pending_ccbs, &ccb->ccb_h, sim_links.le); ccb->ccb_h.timeout_ch = timeout(bttimeout, (caddr_t)bccb, (ccb->ccb_h.timeout * hz) / 1000); /* Tell the adapter about this command */ bt->cur_outbox->ccb_addr = btccbvtop(bt, bccb); if (bt->cur_outbox->action_code != BMBO_FREE) { /* * We should never encounter a busy mailbox. * If we do, warn the user, and treat it as * a resource shortage. If the controller is * hung, one of the pending transactions will * timeout causing us to start recovery operations. */ device_printf(bt->dev, "Encountered busy mailbox with %d out of %d " "commands active!!!\n", bt->active_ccbs, bt->max_ccbs); untimeout(bttimeout, bccb, ccb->ccb_h.timeout_ch); if (nseg != 0) bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap); btfreeccb(bt, bccb); bt->resource_shortage = TRUE; xpt_freeze_simq(bt->sim, /*count*/1); ccb->ccb_h.status = CAM_REQUEUE_REQ; xpt_done(ccb); return; } bt->cur_outbox->action_code = BMBO_START; bt_outb(bt, COMMAND_REG, BOP_START_MBOX); btnextoutbox(bt); splx(s); } void bt_intr(void *arg) { struct bt_softc *bt; u_int intstat; bt = (struct bt_softc *)arg; while (((intstat = bt_inb(bt, INTSTAT_REG)) & INTR_PENDING) != 0) { if ((intstat & CMD_COMPLETE) != 0) { bt->latched_status = bt_inb(bt, STATUS_REG); bt->command_cmp = TRUE; } bt_outb(bt, CONTROL_REG, RESET_INTR); if ((intstat & IMB_LOADED) != 0) { while (bt->cur_inbox->comp_code != BMBI_FREE) { btdone(bt, btccbptov(bt, bt->cur_inbox->ccb_addr), bt->cur_inbox->comp_code); bt->cur_inbox->comp_code = BMBI_FREE; btnextinbox(bt); } } if ((intstat & SCSI_BUS_RESET) != 0) { btreset(bt, /*hardreset*/FALSE); } } } static void btdone(struct bt_softc *bt, struct bt_ccb *bccb, bt_mbi_comp_code_t comp_code) { union ccb *ccb; struct ccb_scsiio *csio; ccb = bccb->ccb; csio = &bccb->ccb->csio; if ((bccb->flags & BCCB_ACTIVE) == 0) { device_printf(bt->dev, "btdone - Attempt to free non-active BCCB %p\n", (void *)bccb); return; } if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { bus_dmasync_op_t op; if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) op = BUS_DMASYNC_POSTREAD; else op = BUS_DMASYNC_POSTWRITE; bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op); bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap); } if (bccb == bt->recovery_bccb) { /* * The recovery BCCB does not have a CCB associated * with it, so short circuit the normal error handling. * We now traverse our list of pending CCBs and process * any that were terminated by the recovery CCBs action. * We also reinstate timeouts for all remaining, pending, * CCBs. */ struct cam_path *path; struct ccb_hdr *ccb_h; cam_status error; /* Notify all clients that a BDR occured */ error = xpt_create_path(&path, /*periph*/NULL, cam_sim_path(bt->sim), bccb->hccb.target_id, CAM_LUN_WILDCARD); if (error == CAM_REQ_CMP) xpt_async(AC_SENT_BDR, path, NULL); ccb_h = LIST_FIRST(&bt->pending_ccbs); while (ccb_h != NULL) { struct bt_ccb *pending_bccb; pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr; if (pending_bccb->hccb.target_id == bccb->hccb.target_id) { pending_bccb->hccb.btstat = BTSTAT_HA_BDR; ccb_h = LIST_NEXT(ccb_h, sim_links.le); btdone(bt, pending_bccb, BMBI_ERROR); } else { ccb_h->timeout_ch = timeout(bttimeout, (caddr_t)pending_bccb, (ccb_h->timeout * hz) / 1000); ccb_h = LIST_NEXT(ccb_h, sim_links.le); } } device_printf(bt->dev, "No longer in timeout\n"); return; } untimeout(bttimeout, bccb, ccb->ccb_h.timeout_ch); switch (comp_code) { case BMBI_FREE: device_printf(bt->dev, "btdone - CCB completed with free status!\n"); break; case BMBI_NOT_FOUND: device_printf(bt->dev, "btdone - CCB Abort failed to find CCB\n"); break; case BMBI_ABORT: case BMBI_ERROR: if (bootverbose) { printf("bt: ccb %p - error %x occured. " "btstat = %x, sdstat = %x\n", (void *)bccb, comp_code, bccb->hccb.btstat, bccb->hccb.sdstat); } /* An error occured */ switch(bccb->hccb.btstat) { case BTSTAT_DATARUN_ERROR: if (bccb->hccb.data_len == 0) { /* * At least firmware 4.22, does this * for a QUEUE FULL condition. */ bccb->hccb.sdstat = SCSI_STATUS_QUEUE_FULL; } else if (bccb->hccb.data_len < 0) { csio->ccb_h.status = CAM_DATA_RUN_ERR; break; } /* FALLTHROUGH */ case BTSTAT_NOERROR: case BTSTAT_LINKED_CMD_COMPLETE: case BTSTAT_LINKED_CMD_FLAG_COMPLETE: case BTSTAT_DATAUNDERUN_ERROR: csio->scsi_status = bccb->hccb.sdstat; csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR; switch(csio->scsi_status) { case SCSI_STATUS_CHECK_COND: case SCSI_STATUS_CMD_TERMINATED: csio->ccb_h.status |= CAM_AUTOSNS_VALID; /* Bounce sense back if necessary */ if (bt->sense_buffers != NULL) { csio->sense_data = *btsensevaddr(bt, bccb); } break; default: break; case SCSI_STATUS_OK: csio->ccb_h.status = CAM_REQ_CMP; break; } csio->resid = bccb->hccb.data_len; break; case BTSTAT_SELTIMEOUT: csio->ccb_h.status = CAM_SEL_TIMEOUT; break; case BTSTAT_UNEXPECTED_BUSFREE: csio->ccb_h.status = CAM_UNEXP_BUSFREE; break; case BTSTAT_INVALID_PHASE: csio->ccb_h.status = CAM_SEQUENCE_FAIL; break; case BTSTAT_INVALID_ACTION_CODE: panic("%s: Inavlid Action code", bt_name(bt)); break; case BTSTAT_INVALID_OPCODE: panic("%s: Inavlid CCB Opcode code", bt_name(bt)); break; case BTSTAT_LINKED_CCB_LUN_MISMATCH: /* We don't even support linked commands... */ panic("%s: Linked CCB Lun Mismatch", bt_name(bt)); break; case BTSTAT_INVALID_CCB_OR_SG_PARAM: panic("%s: Invalid CCB or SG list", bt_name(bt)); break; case BTSTAT_AUTOSENSE_FAILED: csio->ccb_h.status = CAM_AUTOSENSE_FAIL; break; case BTSTAT_TAGGED_MSG_REJECTED: { struct ccb_trans_settings neg; #ifdef CAM_NEW_TRAN_CODE struct ccb_trans_settings_scsi *scsi = &neg.proto_specific.scsi; neg.protocol = PROTO_SCSI; neg.protocol_version = SCSI_REV_2; neg.transport = XPORT_SPI; neg.transport_version = 2; scsi->valid = CTS_SCSI_VALID_TQ; scsi->flags = 0; #else neg.flags = 0; neg.valid = CCB_TRANS_TQ_VALID; #endif xpt_print_path(csio->ccb_h.path); printf("refuses tagged commands. Performing " "non-tagged I/O\n"); xpt_setup_ccb(&neg.ccb_h, csio->ccb_h.path, /*priority*/1); xpt_async(AC_TRANSFER_NEG, csio->ccb_h.path, &neg); bt->tags_permitted &= ~(0x01 << csio->ccb_h.target_id); csio->ccb_h.status = CAM_MSG_REJECT_REC; break; } case BTSTAT_UNSUPPORTED_MSG_RECEIVED: /* * XXX You would think that this is * a recoverable error... Hmmm. */ csio->ccb_h.status = CAM_REQ_CMP_ERR; break; case BTSTAT_HA_SOFTWARE_ERROR: case BTSTAT_HA_WATCHDOG_ERROR: case BTSTAT_HARDWARE_FAILURE: /* Hardware reset ??? Can we recover ??? */ csio->ccb_h.status = CAM_NO_HBA; break; case BTSTAT_TARGET_IGNORED_ATN: case BTSTAT_OTHER_SCSI_BUS_RESET: case BTSTAT_HA_SCSI_BUS_RESET: if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_CMD_TIMEOUT) csio->ccb_h.status = CAM_SCSI_BUS_RESET; break; case BTSTAT_HA_BDR: if ((bccb->flags & BCCB_DEVICE_RESET) == 0) csio->ccb_h.status = CAM_BDR_SENT; else csio->ccb_h.status = CAM_CMD_TIMEOUT; break; case BTSTAT_INVALID_RECONNECT: case BTSTAT_ABORT_QUEUE_GENERATED: csio->ccb_h.status = CAM_REQ_TERMIO; break; case BTSTAT_SCSI_PERROR_DETECTED: csio->ccb_h.status = CAM_UNCOR_PARITY; break; } if (csio->ccb_h.status != CAM_REQ_CMP) { xpt_freeze_devq(csio->ccb_h.path, /*count*/1); csio->ccb_h.status |= CAM_DEV_QFRZN; } if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0) ccb->ccb_h.status |= CAM_RELEASE_SIMQ; btfreeccb(bt, bccb); xpt_done(ccb); break; case BMBI_OK: /* All completed without incident */ ccb->ccb_h.status |= CAM_REQ_CMP; if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0) ccb->ccb_h.status |= CAM_RELEASE_SIMQ; btfreeccb(bt, bccb); xpt_done(ccb); break; } } static int btreset(struct bt_softc* bt, int hard_reset) { struct ccb_hdr *ccb_h; u_int status; u_int timeout; u_int8_t reset_type; if (hard_reset != 0) reset_type = HARD_RESET; else reset_type = SOFT_RESET; bt_outb(bt, CONTROL_REG, reset_type); /* Wait 5sec. for Diagnostic start */ timeout = 5 * 10000; while (--timeout) { status = bt_inb(bt, STATUS_REG); if ((status & DIAG_ACTIVE) != 0) break; DELAY(100); } if (timeout == 0) { if (bootverbose) printf("%s: btreset - Diagnostic Active failed to " "assert. status = 0x%x\n", bt_name(bt), status); return (ETIMEDOUT); } /* Wait 10sec. for Diagnostic end */ timeout = 10 * 10000; while (--timeout) { status = bt_inb(bt, STATUS_REG); if ((status & DIAG_ACTIVE) == 0) break; DELAY(100); } if (timeout == 0) { panic("%s: btreset - Diagnostic Active failed to drop. " "status = 0x%x\n", bt_name(bt), status); return (ETIMEDOUT); } /* Wait for the host adapter to become ready or report a failure */ timeout = 10000; while (--timeout) { status = bt_inb(bt, STATUS_REG); if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0) break; DELAY(100); } if (timeout == 0) { printf("%s: btreset - Host adapter failed to come ready. " "status = 0x%x\n", bt_name(bt), status); return (ETIMEDOUT); } /* If the diagnostics failed, tell the user */ if ((status & DIAG_FAIL) != 0 || (status & HA_READY) == 0) { printf("%s: btreset - Adapter failed diagnostics\n", bt_name(bt)); if ((status & DATAIN_REG_READY) != 0) printf("%s: btreset - Host Adapter Error code = 0x%x\n", bt_name(bt), bt_inb(bt, DATAIN_REG)); return (ENXIO); } /* If we've allocated mailboxes, initialize them */ if (bt->init_level > 4) btinitmboxes(bt); /* If we've attached to the XPT, tell it about the event */ if (bt->path != NULL) xpt_async(AC_BUS_RESET, bt->path, NULL); /* * Perform completion processing for all outstanding CCBs. */ while ((ccb_h = LIST_FIRST(&bt->pending_ccbs)) != NULL) { struct bt_ccb *pending_bccb; pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr; pending_bccb->hccb.btstat = BTSTAT_HA_SCSI_BUS_RESET; btdone(bt, pending_bccb, BMBI_ERROR); } return (0); } /* * Send a command to the adapter. */ 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) { u_int timeout; u_int status; u_int saved_status; u_int intstat; u_int reply_buf_size; int s; int cmd_complete; int error; /* No data returned to start */ reply_buf_size = reply_len; reply_len = 0; intstat = 0; cmd_complete = 0; saved_status = 0; error = 0; bt->command_cmp = 0; /* * Wait up to 10 sec. for the adapter to become * ready to accept commands. */ timeout = 100000; while (--timeout) { status = bt_inb(bt, STATUS_REG); if ((status & HA_READY) != 0 && (status & CMD_REG_BUSY) == 0) break; /* * Throw away any pending data which may be * left over from earlier commands that we * timedout on. */ if ((status & DATAIN_REG_READY) != 0) (void)bt_inb(bt, DATAIN_REG); DELAY(100); } if (timeout == 0) { printf("%s: bt_cmd: Timeout waiting for adapter ready, " "status = 0x%x\n", bt_name(bt), status); return (ETIMEDOUT); } /* * Send the opcode followed by any necessary parameter bytes. */ bt_outb(bt, COMMAND_REG, opcode); /* * Wait for up to 1sec for each byte of the the * parameter list sent to be sent. */ timeout = 10000; while (param_len && --timeout) { DELAY(100); s = splcam(); status = bt_inb(bt, STATUS_REG); intstat = bt_inb(bt, INTSTAT_REG); splx(s); if ((intstat & (INTR_PENDING|CMD_COMPLETE)) == (INTR_PENDING|CMD_COMPLETE)) { saved_status = status; cmd_complete = 1; break; } if (bt->command_cmp != 0) { saved_status = bt->latched_status; cmd_complete = 1; break; } if ((status & DATAIN_REG_READY) != 0) break; if ((status & CMD_REG_BUSY) == 0) { bt_outb(bt, COMMAND_REG, *params++); param_len--; timeout = 10000; } } if (timeout == 0) { printf("%s: bt_cmd: Timeout sending parameters, " "status = 0x%x\n", bt_name(bt), status); cmd_complete = 1; saved_status = status; error = ETIMEDOUT; } /* * Wait for the command to complete. */ while (cmd_complete == 0 && --cmd_timeout) { s = splcam(); status = bt_inb(bt, STATUS_REG); intstat = bt_inb(bt, INTSTAT_REG); /* * It may be that this command was issued with * controller interrupts disabled. We'll never * get to our command if an incoming mailbox * interrupt is pending, so take care of completed * mailbox commands by calling our interrupt handler. */ if ((intstat & (INTR_PENDING|IMB_LOADED)) == (INTR_PENDING|IMB_LOADED)) bt_intr(bt); splx(s); if (bt->command_cmp != 0) { /* * Our interrupt handler saw CMD_COMPLETE * status before we did. */ cmd_complete = 1; saved_status = bt->latched_status; } else if ((intstat & (INTR_PENDING|CMD_COMPLETE)) == (INTR_PENDING|CMD_COMPLETE)) { /* * Our poll (in case interrupts are blocked) * saw the CMD_COMPLETE interrupt. */ cmd_complete = 1; saved_status = status; } else if (opcode == BOP_MODIFY_IO_ADDR && (status & CMD_REG_BUSY) == 0) { /* * The BOP_MODIFY_IO_ADDR does not issue a CMD_COMPLETE, * but it should update the status register. So, we * consider this command complete when the CMD_REG_BUSY * status clears. */ saved_status = status; cmd_complete = 1; } else if ((status & DATAIN_REG_READY) != 0) { u_int8_t data; data = bt_inb(bt, DATAIN_REG); if (reply_len < reply_buf_size) { *reply_data++ = data; } else { printf("%s: bt_cmd - Discarded reply data byte " "for opcode 0x%x\n", bt_name(bt), opcode); } /* * Reset timeout to ensure at least a second * between response bytes. */ cmd_timeout = MAX(cmd_timeout, 10000); reply_len++; } else if ((opcode == BOP_FETCH_LRAM) && (status & HA_READY) != 0) { saved_status = status; cmd_complete = 1; } DELAY(100); } if (cmd_timeout == 0) { printf("%s: bt_cmd: Timeout waiting for command (%x) " "to complete.\n%s: status = 0x%x, intstat = 0x%x, " "rlen %d\n", bt_name(bt), opcode, bt_name(bt), status, intstat, reply_len); error = (ETIMEDOUT); } /* * Clear any pending interrupts. Block interrupts so our * interrupt handler is not re-entered. */ s = splcam(); bt_intr(bt); splx(s); if (error != 0) return (error); /* * If the command was rejected by the controller, tell the caller. */ if ((saved_status & CMD_INVALID) != 0) { /* * Some early adapters may not recover properly from * an invalid command. If it appears that the controller * has wedged (i.e. status was not cleared by our interrupt * reset above), perform a soft reset. */ if (bootverbose) printf("%s: Invalid Command 0x%x\n", bt_name(bt), opcode); DELAY(1000); status = bt_inb(bt, STATUS_REG); if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY| CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0 || (status & (HA_READY|INIT_REQUIRED)) != (HA_READY|INIT_REQUIRED)) { btreset(bt, /*hard_reset*/FALSE); } return (EINVAL); } if (param_len > 0) { /* The controller did not accept the full argument list */ return (E2BIG); } if (reply_len != reply_buf_size) { /* Too much or too little data received */ return (EMSGSIZE); } /* We were successful */ return (0); } static int btinitmboxes(struct bt_softc *bt) { init_32b_mbox_params_t init_mbox; int error; bzero(bt->in_boxes, sizeof(bt_mbox_in_t) * bt->num_boxes); bzero(bt->out_boxes, sizeof(bt_mbox_out_t) * bt->num_boxes); bt->cur_inbox = bt->in_boxes; bt->last_inbox = bt->in_boxes + bt->num_boxes - 1; bt->cur_outbox = bt->out_boxes; bt->last_outbox = bt->out_boxes + bt->num_boxes - 1; /* Tell the adapter about them */ init_mbox.num_boxes = bt->num_boxes; init_mbox.base_addr[0] = bt->mailbox_physbase & 0xFF; init_mbox.base_addr[1] = (bt->mailbox_physbase >> 8) & 0xFF; init_mbox.base_addr[2] = (bt->mailbox_physbase >> 16) & 0xFF; init_mbox.base_addr[3] = (bt->mailbox_physbase >> 24) & 0xFF; error = bt_cmd(bt, BOP_INITIALIZE_32BMBOX, (u_int8_t *)&init_mbox, /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL, /*reply_len*/0, DEFAULT_CMD_TIMEOUT); if (error != 0) printf("btinitmboxes: Initialization command failed\n"); else if (bt->strict_rr != 0) { /* * If the controller supports * strict round robin mode, * enable it */ u_int8_t param; param = 0; error = bt_cmd(bt, BOP_ENABLE_STRICT_RR, ¶m, 1, /*reply_buf*/NULL, /*reply_len*/0, DEFAULT_CMD_TIMEOUT); if (error != 0) { printf("btinitmboxes: Unable to enable strict RR\n"); error = 0; } else if (bootverbose) { printf("%s: Using Strict Round Robin Mailbox Mode\n", bt_name(bt)); } } return (error); } /* * Update the XPT's idea of the negotiated transfer * parameters for a particular target. */ static void btfetchtransinfo(struct bt_softc *bt, struct ccb_trans_settings *cts) { setup_data_t setup_info; u_int target; u_int targ_offset; u_int targ_mask; u_int sync_period; u_int sync_offset; u_int bus_width; int error; u_int8_t param; targ_syncinfo_t sync_info; #ifdef CAM_NEW_TRAN_CODE struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; spi->valid = 0; scsi->valid = 0; #else cts->valid = 0; #endif target = cts->ccb_h.target_id; targ_offset = (target & 0x7); targ_mask = (0x01 << targ_offset); /* * Inquire Setup Information. This command retreives the * Wide negotiation status for recent adapters as well as * the sync info for older models. */ param = sizeof(setup_info); error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, ¶m, /*paramlen*/1, (u_int8_t*)&setup_info, sizeof(setup_info), DEFAULT_CMD_TIMEOUT); if (error != 0) { printf("%s: btfetchtransinfo - Inquire Setup Info Failed %x\n", bt_name(bt), error); return; } sync_info = (target < 8) ? setup_info.low_syncinfo[targ_offset] : setup_info.high_syncinfo[targ_offset]; if (sync_info.sync == 0) sync_offset = 0; else sync_offset = sync_info.offset; bus_width = MSG_EXT_WDTR_BUS_8_BIT; if (strcmp(bt->firmware_ver, "5.06L") >= 0) { u_int wide_active; wide_active = (target < 8) ? (setup_info.low_wide_active & targ_mask) : (setup_info.high_wide_active & targ_mask); if (wide_active) bus_width = MSG_EXT_WDTR_BUS_16_BIT; } else if ((bt->wide_permitted & targ_mask) != 0) { struct ccb_getdev cgd; /* * Prior to rev 5.06L, wide status isn't provided, * so we "guess" that wide transfers are in effect * if the user settings allow for wide and the inquiry * data for the device indicates that it can handle * wide transfers. */ xpt_setup_ccb(&cgd.ccb_h, cts->ccb_h.path, /*priority*/1); cgd.ccb_h.func_code = XPT_GDEV_TYPE; xpt_action((union ccb *)&cgd); if ((cgd.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP && (cgd.inq_data.flags & SID_WBus16) != 0) bus_width = MSG_EXT_WDTR_BUS_16_BIT; } if (bt->firmware_ver[0] >= '3') { /* * For adapters that can do fast or ultra speeds, * use the more exact Target Sync Information command. */ target_sync_info_data_t sync_info; param = sizeof(sync_info); error = bt_cmd(bt, BOP_TARG_SYNC_INFO, ¶m, /*paramlen*/1, (u_int8_t*)&sync_info, sizeof(sync_info), DEFAULT_CMD_TIMEOUT); if (error != 0) { printf("%s: btfetchtransinfo - Inquire Sync " "Info Failed 0x%x\n", bt_name(bt), error); return; } sync_period = sync_info.sync_rate[target] * 100; } else { sync_period = 2000 + (500 * sync_info.period); } #ifdef CAM_NEW_TRAN_CODE cts->protocol = PROTO_SCSI; cts->protocol_version = SCSI_REV_2; cts->transport = XPORT_SPI; cts->transport_version = 2; spi->sync_period = sync_period; spi->valid |= CTS_SPI_VALID_SYNC_RATE; spi->sync_offset = sync_offset; spi->valid |= CTS_SPI_VALID_SYNC_OFFSET; spi->valid |= CTS_SPI_VALID_BUS_WIDTH; spi->bus_width = bus_width; if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) { scsi->valid = CTS_SCSI_VALID_TQ; spi->valid |= CTS_SPI_VALID_DISC; } else scsi->valid = 0; #else /* Convert ns value to standard SCSI sync rate */ if (cts->sync_offset != 0) cts->sync_period = scsi_calc_syncparam(sync_period); else cts->sync_period = 0; cts->sync_offset = sync_offset; cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; cts->valid = CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_SYNC_OFFSET_VALID | CCB_TRANS_BUS_WIDTH_VALID; #endif xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts); } static void btmapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error) { struct bt_softc* bt; bt = (struct bt_softc*)arg; bt->mailbox_physbase = segs->ds_addr; } static void btmapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error) { struct bt_softc* bt; bt = (struct bt_softc*)arg; bt->bt_ccb_physbase = segs->ds_addr; } static void btmapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error) { struct bt_softc* bt; bt = (struct bt_softc*)arg; SLIST_FIRST(&bt->sg_maps)->sg_physaddr = segs->ds_addr; } static void btpoll(struct cam_sim *sim) { bt_intr(cam_sim_softc(sim)); } void bttimeout(void *arg) { struct bt_ccb *bccb; union ccb *ccb; struct bt_softc *bt; int s; bccb = (struct bt_ccb *)arg; ccb = bccb->ccb; bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr; xpt_print_path(ccb->ccb_h.path); printf("CCB %p - timed out\n", (void *)bccb); s = splcam(); if ((bccb->flags & BCCB_ACTIVE) == 0) { xpt_print_path(ccb->ccb_h.path); printf("CCB %p - timed out CCB already completed\n", (void *)bccb); splx(s); return; } /* * In order to simplify the recovery process, we ask the XPT * layer to halt the queue of new transactions and we traverse * the list of pending CCBs and remove their timeouts. This * means that the driver attempts to clear only one error * condition at a time. In general, timeouts that occur * close together are related anyway, so there is no benefit * in attempting to handle errors in parrallel. Timeouts will * be reinstated when the recovery process ends. */ if ((bccb->flags & BCCB_DEVICE_RESET) == 0) { struct ccb_hdr *ccb_h; if ((bccb->flags & BCCB_RELEASE_SIMQ) == 0) { xpt_freeze_simq(bt->sim, /*count*/1); bccb->flags |= BCCB_RELEASE_SIMQ; } ccb_h = LIST_FIRST(&bt->pending_ccbs); while (ccb_h != NULL) { struct bt_ccb *pending_bccb; pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr; untimeout(bttimeout, pending_bccb, ccb_h->timeout_ch); ccb_h = LIST_NEXT(ccb_h, sim_links.le); } } if ((bccb->flags & BCCB_DEVICE_RESET) != 0 || bt->cur_outbox->action_code != BMBO_FREE || ((bccb->hccb.tag_enable == TRUE) && (bt->firmware_ver[0] < '5'))) { /* * Try a full host adapter/SCSI bus reset. * We do this only if we have already attempted * to clear the condition with a BDR, or we cannot * attempt a BDR for lack of mailbox resources * or because of faulty firmware. It turns out * that firmware versions prior to 5.xx treat BDRs * as untagged commands that cannot be sent until * all outstanding tagged commands have been processed. * This makes it somewhat difficult to use a BDR to * clear up a problem with an uncompleted tagged command. */ ccb->ccb_h.status = CAM_CMD_TIMEOUT; btreset(bt, /*hardreset*/TRUE); printf("%s: No longer in timeout\n", bt_name(bt)); } else { /* * Send a Bus Device Reset message: * The target that is holding up the bus may not * be the same as the one that triggered this timeout * (different commands have different timeout lengths), * but we have no way of determining this from our * timeout handler. Our strategy here is to queue a * BDR message to the target of the timed out command. * If this fails, we'll get another timeout 2 seconds * later which will attempt a bus reset. */ bccb->flags |= BCCB_DEVICE_RESET; ccb->ccb_h.timeout_ch = timeout(bttimeout, (caddr_t)bccb, 2 * hz); bt->recovery_bccb->hccb.opcode = INITIATOR_BUS_DEV_RESET; /* No Data Transfer */ bt->recovery_bccb->hccb.datain = TRUE; bt->recovery_bccb->hccb.dataout = TRUE; bt->recovery_bccb->hccb.btstat = 0; bt->recovery_bccb->hccb.sdstat = 0; bt->recovery_bccb->hccb.target_id = ccb->ccb_h.target_id; /* Tell the adapter about this command */ bt->cur_outbox->ccb_addr = btccbvtop(bt, bt->recovery_bccb); bt->cur_outbox->action_code = BMBO_START; bt_outb(bt, COMMAND_REG, BOP_START_MBOX); btnextoutbox(bt); } splx(s); }