diff options
Diffstat (limited to 'sys/dev/aha/aha.c')
-rw-r--r-- | sys/dev/aha/aha.c | 1762 |
1 files changed, 1762 insertions, 0 deletions
diff --git a/sys/dev/aha/aha.c b/sys/dev/aha/aha.c new file mode 100644 index 0000000..8f1098b --- /dev/null +++ b/sys/dev/aha/aha.c @@ -0,0 +1,1762 @@ +/* + * Generic register and struct definitions for the Adaptech 154x/164x + * SCSI host adapters. Product specific probe and attach routines can + * be found in: + * <fill in list here> XXX + * + * Derived from bt.c written by: + * + * Copyright (c) 1998 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. + * + * $Id$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/buf.h> +#include <sys/kernel.h> +#include <sys/sysctl.h> + +#include <machine/bus_pio.h> +#include <machine/bus.h> +#include <machine/clock.h> + +#include <cam/cam.h> +#include <cam/cam_ccb.h> +#include <cam/cam_sim.h> +#include <cam/cam_xpt_sim.h> +#include <cam/cam_debug.h> + +#include <cam/scsi/scsi_message.h> + +#include <vm/vm.h> +#include <vm/pmap.h> + +#include <dev/aha/ahareg.h> + +struct aha_softc *aha_softcs[NAHA]; + +#define MIN(a, b) ((a) < (b) ? (a) : (b)) + +/* MailBox Management functions */ +static __inline void ahanextinbox(struct aha_softc *aha); +static __inline void ahanextoutbox(struct aha_softc *aha); + +static __inline void +ahanextinbox(struct aha_softc *aha) +{ + if (aha->cur_inbox == aha->last_inbox) + aha->cur_inbox = aha->in_boxes; + else + aha->cur_inbox++; +} + +static __inline void +ahanextoutbox(struct aha_softc *aha) +{ + if (aha->cur_outbox == aha->last_outbox) + aha->cur_outbox = aha->out_boxes; + else + aha->cur_outbox++; +} + +#define ahautoa24(u,s3) \ + (s3)[0] = ((u) >> 16) & 0xff; \ + (s3)[1] = ((u) >> 8) & 0xff; \ + (s3)[2] = (u) & 0xff; + +#define aha_a24tou(s3) \ + (((s3)[0] << 16) | ((s3)[1] << 8) | (s3)[2]) + +/* CCB Mangement functions */ +static __inline u_int32_t ahaccbvtop(struct aha_softc *aha, + struct aha_ccb *bccb); +static __inline struct aha_ccb* ahaccbptov(struct aha_softc *aha, + u_int32_t ccb_addr); + +static __inline u_int32_t +ahaccbvtop(struct aha_softc *aha, struct aha_ccb *bccb) +{ + return (aha->aha_ccb_physbase + + (u_int32_t)((caddr_t)bccb - (caddr_t)aha->aha_ccb_array)); +} +static __inline struct aha_ccb * +ahaccbptov(struct aha_softc *aha, u_int32_t ccb_addr) +{ + return (aha->aha_ccb_array + + + ((struct aha_ccb*)ccb_addr-(struct aha_ccb*)aha->aha_ccb_physbase)); +} + +static struct aha_ccb* ahagetccb(struct aha_softc *aha); +static __inline void ahafreeccb(struct aha_softc *aha, struct aha_ccb *bccb); +static void ahaallocccbs(struct aha_softc *aha); +static bus_dmamap_callback_t ahaexecuteccb; +static void ahadone(struct aha_softc *aha, struct aha_ccb *bccb, + aha_mbi_comp_code_t comp_code); + +/* Host adapter command functions */ +static int ahareset(struct aha_softc* aha, int hard_reset); + +/* Initialization functions */ +static int ahainitmboxes(struct aha_softc *aha); +static bus_dmamap_callback_t ahamapmboxes; +static bus_dmamap_callback_t ahamapccbs; +static bus_dmamap_callback_t ahamapsgs; + +/* Transfer Negotiation Functions */ +static void ahafetchtransinfo(struct aha_softc *aha, + struct ccb_trans_settings *cts); + +/* CAM SIM entry points */ +#define ccb_bccb_ptr spriv_ptr0 +#define ccb_aha_ptr spriv_ptr1 +static void ahaaction(struct cam_sim *sim, union ccb *ccb); +static void ahapoll(struct cam_sim *sim); + +/* Our timeout handler */ +timeout_t ahatimeout; + +u_long aha_unit = 0; + +/* + * 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 aha_isa_port aha_isa_ports[] = +{ + { 0x330, 0 }, + { 0x334, 0 }, + { 0x230, 0 }, + { 0x234, 0 }, + { 0x130, 0 }, + { 0x134, 0 } +}; + +/* Exported functions */ +struct aha_softc * +aha_alloc(int unit, bus_space_tag_t tag, bus_space_handle_t bsh) +{ + struct aha_softc *aha; + int i; + + if (unit != AHA_TEMP_UNIT) { + if (unit >= NAHA) { + printf("aha: unit number (%d) too high\n", unit); + return NULL; + } + + /* + * Allocate a storage area for us + */ + if (aha_softcs[unit]) { + printf("aha%d: memory already allocated\n", unit); + return NULL; + } + } + + aha = malloc(sizeof(struct aha_softc), M_DEVBUF, M_NOWAIT); + if (!aha) { + printf("aha%d: cannot malloc!\n", unit); + return NULL; + } + bzero(aha, sizeof(struct aha_softc)); + SLIST_INIT(&aha->free_aha_ccbs); + LIST_INIT(&aha->pending_ccbs); + SLIST_INIT(&aha->sg_maps); + aha->unit = unit; + aha->tag = tag; + aha->bsh = bsh; + + if (aha->unit != AHA_TEMP_UNIT) { + aha_softcs[unit] = aha; + } + return (aha); +} + +void +aha_free(struct aha_softc *aha) +{ + switch (aha->init_level) { + default: + case 8: + { + struct sg_map_node *sg_map; + + while ((sg_map = SLIST_FIRST(&aha->sg_maps))!= NULL) { + SLIST_REMOVE_HEAD(&aha->sg_maps, links); + bus_dmamap_unload(aha->sg_dmat, + sg_map->sg_dmamap); + bus_dmamem_free(aha->sg_dmat, sg_map->sg_vaddr, + sg_map->sg_dmamap); + free(sg_map, M_DEVBUF); + } + bus_dma_tag_destroy(aha->sg_dmat); + } + case 7: + bus_dmamap_unload(aha->ccb_dmat, aha->ccb_dmamap); + case 6: + bus_dmamap_destroy(aha->ccb_dmat, aha->ccb_dmamap); + bus_dmamem_free(aha->ccb_dmat, aha->aha_ccb_array, + aha->ccb_dmamap); + case 5: + bus_dma_tag_destroy(aha->ccb_dmat); + case 4: + bus_dmamap_unload(aha->mailbox_dmat, aha->mailbox_dmamap); + case 3: + bus_dmamem_free(aha->mailbox_dmat, aha->in_boxes, + aha->mailbox_dmamap); + bus_dmamap_destroy(aha->mailbox_dmat, aha->mailbox_dmamap); + case 2: + bus_dma_tag_destroy(aha->buffer_dmat); + case 1: + bus_dma_tag_destroy(aha->mailbox_dmat); + case 0: + } + if (aha->unit != AHA_TEMP_UNIT) { + aha_softcs[aha->unit] = NULL; + } + free(aha, M_DEVBUF); +} + +/* + * Probe the adapter and verify that the card is an Adaptec. + */ +int +aha_probe(struct aha_softc* aha) +{ + u_int status; + u_int intstat; + int error; + u_int8_t param; + esetup_info_data_t esetup_info; + + /* + * See if the three I/O ports look reasonable. + * Touch the minimal number of registers in the + * failure case. + */ + status = aha_inb(aha, STATUS_REG); + if ((status == 0) + || (status & (DIAG_ACTIVE|CMD_REG_BUSY| + STATUS_REG_RSVD|CMD_INVALID)) != 0) { + return (ENXIO); + } + + intstat = aha_inb(aha, INTSTAT_REG); + if ((intstat & INTSTAT_REG_RSVD) != 0) { + printf("%s: Failed Intstat Reg Test\n", aha_name(aha)); + return (ENXIO); + } + + /* + * Looking good so far. Final test is to reset the + * adapter. + */ + if ((error = ahareset(aha, /*hard_reset*/TRUE)) != 0) { + if (bootverbose) + printf("%s: Failed Reset\n", aha_name(aha)); + return (ENXIO); + } + + /* + * Issue a buslogic command that will fail, and reject the board + * if it doesn't. + */ + param = sizeof(esetup_info); + error = aha_cmd(aha, 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 +aha_fetch_adapter_info(struct aha_softc *aha) +{ + board_id_data_t board_id; + setup_data_t setup_info; + config_data_t config_data; + u_int8_t length_param; + int error; + + /* First record the firmware version */ + error = aha_cmd(aha, BOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0, + (u_int8_t*)&board_id, sizeof(board_id), + DEFAULT_CMD_TIMEOUT); + if (error != 0) { + printf("%s: aha_fetch_adapter_info - Failed Get Board Info\n", + aha_name(aha)); + return (error); + } + aha->firmware_ver[0] = board_id.firmware_rev_major; + aha->firmware_ver[1] = '.'; + aha->firmware_ver[2] = board_id.firmware_rev_minor; + aha->firmware_ver[3] = '\0'; + + aha->boardid = board_id.board_type; + + switch (board_id.board_type) { + case BOARD_1540_16HEAD_BIOS: + strcpy(aha->model, "1540 16 head BIOS"); + break; + case BOARD_1540_64HEAD_BIOS: + strcpy(aha->model, "1540 64 head BIOS"); + break; + case BOARD_1542: + strcpy(aha->model, "1540/1542 64 head BIOS"); + break; + case BOARD_1640: + strcpy(aha->model, "1640"); + break; + case BOARD_1740: + strcpy(aha->model, "1740A/1742A/1744"); + break; + case BOARD_1542C: + strcpy(aha->model, "1542C"); + break; + case BOARD_1542CF: + strcpy(aha->model, "1542CF"); + break; + case BOARD_1542CP: + strcpy(aha->model, "1542CP"); + break; + default: + strcpy(aha->model, "Unknown"); + break; + } + aha->max_sg = 16; + aha->diff_bus = 0; + aha->extended_lun = 0; + aha->extended_trans = 0; /* XXX ???? XXX */ + aha->max_ccbs = 16; /* XXX ???? XXX */ + /* Determine Sync/Wide/Disc settings */ + length_param = sizeof(setup_info); + error = aha_cmd(aha, BOP_INQUIRE_SETUP_INFO, &length_param, + /*paramlen*/1, (u_int8_t*)&setup_info, + sizeof(setup_info), DEFAULT_CMD_TIMEOUT); + if (error != 0) { + printf("%s: aha_fetch_adapter_info - Failed " + "Get Setup Info\n", aha_name(aha)); + return (error); + } + if (setup_info.initiate_sync != 0) { + aha->sync_permitted = ALL_TARGETS; + } + aha->disc_permitted = ALL_TARGETS; + + /* We need as many mailboxes as we can have ccbs */ + aha->num_boxes = aha->max_ccbs; + + /* Determine our SCSI ID */ + + error = aha_cmd(aha, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0, + (u_int8_t*)&config_data, sizeof(config_data), + DEFAULT_CMD_TIMEOUT); + if (error != 0) { + printf("%s: aha_fetch_adapter_info - Failed Get Config\n", + aha_name(aha)); + return (error); + } + aha->scsi_id = config_data.scsi_id; + return (0); +} + +/* + * Start the board, ready for normal operation + */ +int +aha_init(struct aha_softc* aha) +{ + /* Announce the Adapter */ + printf("%s: AHA-%s FW Rev. %s (ID=%x)", aha_name(aha), + aha->model, aha->firmware_ver, aha->boardid); + + if (aha->diff_bus != 0) + printf("Diff "); + + printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", aha->scsi_id, + aha->max_ccbs); + + /* + * Create our DMA tags. These tags define the kinds of device + * accessable 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(aha->parent_dmat, /*alignment*/0, /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + /*maxsize*/MAXBSIZE, /*nsegments*/AHA_NSEG, + /*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT, + /*flags*/BUS_DMA_ALLOCNOW, + &aha->buffer_dmat) != 0) { + goto error_exit; + } + + aha->init_level++; + /* DMA tag for our mailboxes */ + if (bus_dma_tag_create(aha->parent_dmat, /*alignment*/0, /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + aha->num_boxes * (sizeof(aha_mbox_in_t) + + sizeof(aha_mbox_out_t)), + /*nsegments*/1, + /*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT, + /*flags*/0, &aha->mailbox_dmat) != 0) { + goto error_exit; + } + + aha->init_level++; + + /* Allocation for our mailboxes */ + if (bus_dmamem_alloc(aha->mailbox_dmat, (void **)&aha->out_boxes, + BUS_DMA_NOWAIT, &aha->mailbox_dmamap) != 0) { + goto error_exit; + } + + aha->init_level++; + + /* And permanently map them */ + bus_dmamap_load(aha->mailbox_dmat, aha->mailbox_dmamap, + aha->out_boxes, + aha->num_boxes * (sizeof(aha_mbox_in_t) + + sizeof(aha_mbox_out_t)), + ahamapmboxes, aha, /*flags*/0); + + aha->init_level++; + + aha->in_boxes = (aha_mbox_in_t *)&aha->out_boxes[aha->num_boxes]; + + ahainitmboxes(aha); + + /* DMA tag for our ccb structures */ + if (bus_dma_tag_create(aha->parent_dmat, /*alignment*/0, /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + aha->max_ccbs * sizeof(struct aha_ccb), + /*nsegments*/1, + /*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT, + /*flags*/0, &aha->ccb_dmat) != 0) { + goto error_exit; + } + + aha->init_level++; + + /* Allocation for our ccbs */ + if (bus_dmamem_alloc(aha->ccb_dmat, (void **)&aha->aha_ccb_array, + BUS_DMA_NOWAIT, &aha->ccb_dmamap) != 0) { + goto error_exit; + } + + aha->init_level++; + + /* And permanently map them */ + bus_dmamap_load(aha->ccb_dmat, aha->ccb_dmamap, + aha->aha_ccb_array, + aha->max_ccbs * sizeof(struct aha_ccb), + ahamapccbs, aha, /*flags*/0); + + aha->init_level++; + + /* DMA tag for our S/G structures. We allocate in page sized chunks */ + if (bus_dma_tag_create(aha->parent_dmat, /*alignment*/0, /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + PAGE_SIZE, /*nsegments*/1, + /*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT, + /*flags*/0, &aha->sg_dmat) != 0) { + goto error_exit; + } + + aha->init_level++; + + /* Perform initial CCB allocation */ + bzero(aha->aha_ccb_array, aha->max_ccbs * sizeof(struct aha_ccb)); + ahaallocccbs(aha); + + if (aha->num_ccbs == 0) { + printf("%s: aha_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 +aha_attach(struct aha_softc *aha) +{ + int tagged_dev_openings; + struct cam_devq *devq; + + /* + * We reserve 1 ccb for error recovery, so don't + * tell the XPT about it. + */ + tagged_dev_openings = 0; + + /* + * Create the device queue for our SIM. + */ + devq = cam_simq_alloc(aha->max_ccbs - 1); + if (devq == NULL) + return (ENOMEM); + + /* + * Construct our SIM entry + */ + aha->sim = cam_sim_alloc(ahaaction, ahapoll, "aha", aha, aha->unit, + 2, tagged_dev_openings, devq); + if (aha->sim == NULL) { + cam_simq_free(devq); + return (ENOMEM); + } + + if (xpt_bus_register(aha->sim, 0) != CAM_SUCCESS) { + cam_sim_free(aha->sim, /*free_devq*/TRUE); + return (ENXIO); + } + + if (xpt_create_path(&aha->path, /*periph*/NULL, + cam_sim_path(aha->sim), CAM_TARGET_WILDCARD, + CAM_LUN_WILDCARD) != CAM_REQ_CMP) { + xpt_bus_deregister(cam_sim_path(aha->sim)); + cam_sim_free(aha->sim, /*free_devq*/TRUE); + return (ENXIO); + } + + return (0); +} + +char * +aha_name(struct aha_softc *aha) +{ + static char name[10]; + + sprintf(name, "aha%d", aha->unit); + return (name); +} + +int +aha_check_probed_iop(u_int ioport) +{ + u_int i; + + for (i=0; i < AHA_NUM_ISAPORTS; i++) { + if (aha_isa_ports[i].addr == ioport) { + if (aha_isa_ports[i].probed != 0) + return (1); + else { + return (0); + } + } + } + return (1); +} + +void +aha_mark_probed_bio(isa_compat_io_t port) +{ + if (port < BIO_DISABLED) + aha_isa_ports[port].probed = 1; +} + +void +aha_mark_probed_iop(u_int ioport) +{ + u_int i; + + for (i = 0; i < AHA_NUM_ISAPORTS; i++) { + if (ioport == aha_isa_ports[i].addr) { + aha_isa_ports[i].probed = 1; + break; + } + } +} + +static void +ahaallocccbs(struct aha_softc *aha) +{ + struct aha_ccb *next_ccb; + struct sg_map_node *sg_map; + bus_addr_t physaddr; + aha_sg_t *segs; + int newcount; + int i; + + next_ccb = &aha->aha_ccb_array[aha->num_ccbs]; + + sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT); + + if (sg_map == NULL) + return; + + /* Allocate S/G space for the next batch of CCBS */ + if (bus_dmamem_alloc(aha->sg_dmat, (void **)&sg_map->sg_vaddr, + BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) { + free(sg_map, M_DEVBUF); + return; + } + + SLIST_INSERT_HEAD(&aha->sg_maps, sg_map, links); + + bus_dmamap_load(aha->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr, + PAGE_SIZE, ahamapsgs, aha, /*flags*/0); + + segs = sg_map->sg_vaddr; + physaddr = sg_map->sg_physaddr; + + newcount = (PAGE_SIZE / (AHA_NSEG * sizeof(aha_sg_t))); + for (i = 0; aha->num_ccbs < aha->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(aha->buffer_dmat, /*flags*/0, + &next_ccb->dmamap); + if (error != 0) + break; + SLIST_INSERT_HEAD(&aha->free_aha_ccbs, next_ccb, links); + segs += AHA_NSEG; + physaddr += (AHA_NSEG * sizeof(aha_sg_t)); + next_ccb++; + aha->num_ccbs++; + } + + /* Reserve a CCB for error recovery */ + if (aha->recovery_bccb == NULL) { + aha->recovery_bccb = SLIST_FIRST(&aha->free_aha_ccbs); + SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links); + } +} + +static __inline void +ahafreeccb(struct aha_softc *aha, struct aha_ccb *bccb) +{ + int s; + + s = splcam(); + if ((bccb->flags & BCCB_ACTIVE) != 0) + LIST_REMOVE(&bccb->ccb->ccb_h, sim_links.le); + if (aha->resource_shortage != 0 + && (bccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { + bccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ; + aha->resource_shortage = FALSE; + } + bccb->flags = BCCB_FREE; + SLIST_INSERT_HEAD(&aha->free_aha_ccbs, bccb, links); + splx(s); +} + +static struct aha_ccb* +ahagetccb(struct aha_softc *aha) +{ + struct aha_ccb* bccb; + int s; + + s = splcam(); + if ((bccb = SLIST_FIRST(&aha->free_aha_ccbs)) != NULL) { + SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links); + } else if (aha->num_ccbs < aha->max_ccbs) { + ahaallocccbs(aha); + bccb = SLIST_FIRST(&aha->free_aha_ccbs); + if (bccb == NULL) + printf("%s: Can't malloc BCCB\n", aha_name(aha)); + else + SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links); + } + splx(s); + + return (bccb); +} + +static void +ahaaction(struct cam_sim *sim, union ccb *ccb) +{ + struct aha_softc *aha; + int s; + + CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahaaction\n")); + + aha = (struct aha_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 aha_ccb *bccb; + struct aha_hccb *hccb; + + /* + * get a bccb to use. + */ + if ((bccb = ahagetccb(aha)) == NULL) { + int s; + + s = splcam(); + aha->resource_shortage = TRUE; + splx(s); + xpt_freeze_simq(aha->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_aha_ptr = aha; + + /* + * Put all the arguments for the xfer in the bccb + */ + hccb->target = ccb->ccb_h.target_id; + hccb->lun = ccb->ccb_h.target_lun; + hccb->ahastat = 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) != 0; + hccb->dataout = (ccb->ccb_h.flags & CAM_DIR_OUT) != 0; + hccb->cmd_len = csio->cdb_len; + if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) { + ccb->ccb_h.status = CAM_REQ_INVALID; + ahafreeccb(aha, bccb); + xpt_done(ccb); + return; + } + hccb->sense_len = csio->sense_len; + 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; + ahafreeccb(aha, bccb); + xpt_done(ccb); + return; + } + } else { + bcopy(csio->cdb_io.cdb_bytes, + hccb->scsi_cdb, hccb->cmd_len); + } + /* + * 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( + aha->buffer_dmat, + bccb->dmamap, + csio->data_ptr, + csio->dxfer_len, + ahaexecuteccb, + bccb, + /*flags*/0); + if (error == EINPROGRESS) { + /* + * So as to maintain + * ordering, freeze the + * controller queue + * until our mapping is + * returned. + */ + xpt_freeze_simq(aha->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; + ahaexecuteccb(bccb, &seg, 1, 0); + } + } else { + struct bus_dma_segment *segs; + + if ((ccbh->flags & CAM_DATA_PHYS) != 0) + panic("ahaaction - Physical " + "segment pointers " + "unsupported"); + + if ((ccbh->flags&CAM_SG_LIST_PHYS)==0) + panic("ahaaction - Virtual " + "segment addresses " + "unsupported"); + + /* Just use the segments provided */ + segs = (struct bus_dma_segment *) + csio->data_ptr; + ahaexecuteccb(bccb, segs, + csio->sglist_cnt, 0); + } + } else { + ahaexecuteccb(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; + ahaexecuteccb(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_REQ_CMP; + 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; + if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) { + cts->flags = 0; + if ((aha->disc_permitted & target_mask) != 0) + cts->flags |= CCB_TRANS_DISC_ENB; + cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; + if ((aha->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 { + ahafetchtransinfo(aha, 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 && (aha->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 */ + { + ahareset(aha, /*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; + cpi->target_sprt = 0; + cpi->hba_misc = 0; + cpi->hba_eng_cnt = 0; + cpi->max_target = aha->wide_bus ? 15 : 7; + cpi->max_lun = 7; + cpi->initiator_id = aha->scsi_id; + cpi->bus_id = cam_sim_bus(sim); + strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); + strncpy(cpi->hba_vid, "Adaptec", 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; + xpt_done(ccb); + break; + } + default: + ccb->ccb_h.status = CAM_REQ_INVALID; + xpt_done(ccb); + break; + } +} + +static void +ahaexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) +{ + struct aha_ccb *bccb; + union ccb *ccb; + struct aha_softc *aha; + int s, i; + u_int32_t paddr; + + bccb = (struct aha_ccb *)arg; + ccb = bccb->ccb; + aha = (struct aha_softc *)ccb->ccb_h.ccb_aha_ptr; + + if (error != 0) { + if (error != EFBIG) + printf("%s: Unexepected error 0x%x returned from " + "bus_dmamap_load\n", aha_name(aha)); + 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; + } + ahafreeccb(aha, bccb); + xpt_done(ccb); + return; + } + + if (nseg != 0) { + aha_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) { + ahautoa24(dm_segs->ds_len, sg->len); + ahautoa24(dm_segs->ds_addr, sg->addr); + sg++; + dm_segs++; + } + + if (nseg > 1) { + bccb->hccb.opcode = INITIATOR_SG_CCB_WRESID; + ahautoa24((sizeof(aha_sg_t) * nseg), + bccb->hccb.data_len); + ahautoa24(bccb->sg_list_phys, bccb->hccb.data_addr); + } else { + bcopy(bccb->sg_list->len, bccb->hccb.data_len, 3); + bcopy(bccb->sg_list->addr, bccb->hccb.data_addr, 3); + } + + if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) + op = BUS_DMASYNC_PREREAD; + else + op = BUS_DMASYNC_PREWRITE; + + bus_dmamap_sync(aha->buffer_dmat, bccb->dmamap, op); + + } else { + bccb->hccb.opcode = INITIATOR_CCB_WRESID; + ahautoa24(0, bccb->hccb.data_len); + ahautoa24(0, bccb->hccb.data_addr); + } + + 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(aha->buffer_dmat, bccb->dmamap); + ahafreeccb(aha, bccb); + xpt_done(ccb); + splx(s); + return; + } + + bccb->flags = BCCB_ACTIVE; + ccb->ccb_h.status |= CAM_SIM_QUEUED; + LIST_INSERT_HEAD(&aha->pending_ccbs, &ccb->ccb_h, sim_links.le); + + ccb->ccb_h.timeout_ch = + timeout(ahatimeout, (caddr_t)bccb, + (ccb->ccb_h.timeout * hz) / 1000); + + /* Tell the adapter about this command */ + paddr = ahaccbvtop(aha, bccb); + ahautoa24(paddr, aha->cur_outbox->ccb_addr); + if (aha->cur_outbox->action_code != BMBO_FREE) + panic("%s: Too few mailboxes or to many ccbs???", aha_name(aha)); + aha->cur_outbox->action_code = BMBO_START; + aha_outb(aha, COMMAND_REG, BOP_START_MBOX); + + ahanextoutbox(aha); + splx(s); +} + +void +aha_intr(void *arg) +{ + struct aha_softc *aha; + u_int intstat; + + aha = (struct aha_softc *)arg; + while (((intstat = aha_inb(aha, INTSTAT_REG)) & INTR_PENDING) != 0) { + if ((intstat & CMD_COMPLETE) != 0) { + aha->latched_status = aha_inb(aha, STATUS_REG); + aha->command_cmp = TRUE; + } + + aha_outb(aha, CONTROL_REG, RESET_INTR); + + if ((intstat & IMB_LOADED) != 0) { + while (aha->cur_inbox->comp_code != BMBI_FREE) { + u_int32_t paddr; + paddr = aha_a24tou(aha->cur_inbox->ccb_addr); + ahadone(aha, + ahaccbptov(aha, paddr), + aha->cur_inbox->comp_code); + aha->cur_inbox->comp_code = BMBI_FREE; + ahanextinbox(aha); + } + } + + if ((intstat & SCSI_BUS_RESET) != 0) { + ahareset(aha, /*hardreset*/FALSE); + } + } +} + +static void +ahadone(struct aha_softc *aha, struct aha_ccb *bccb, aha_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) { + printf("%s: ahadone - Attempt to free non-active BCCB 0x%x\n", + aha_name(aha), 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(aha->buffer_dmat, bccb->dmamap, op); + bus_dmamap_unload(aha->buffer_dmat, bccb->dmamap); + } + + if (bccb == aha->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(aha->sim), + bccb->hccb.target, + CAM_LUN_WILDCARD); + + if (error == CAM_REQ_CMP) + xpt_async(AC_SENT_BDR, path, NULL); + + ccb_h = LIST_FIRST(&aha->pending_ccbs); + while (ccb_h != NULL) { + struct aha_ccb *pending_bccb; + + pending_bccb = (struct aha_ccb *)ccb_h->ccb_bccb_ptr; + if (pending_bccb->hccb.target == bccb->hccb.target) { + pending_bccb->hccb.ahastat = AHASTAT_HA_BDR; + ccb_h = LIST_NEXT(ccb_h, sim_links.le); + ahadone(aha, pending_bccb, BMBI_ERROR); + } else { + ccb_h->timeout_ch = + timeout(ahatimeout, (caddr_t)pending_bccb, + (ccb_h->timeout * hz) / 1000); + ccb_h = LIST_NEXT(ccb_h, sim_links.le); + } + } + printf("%s: No longer in timeout\n", aha_name(aha)); + return; + } + + untimeout(ahatimeout, bccb, ccb->ccb_h.timeout_ch); + + switch (comp_code) { + case BMBI_FREE: + printf("%s: ahadone - CCB completed with free status!\n", + aha_name(aha)); + break; + case BMBI_NOT_FOUND: + printf("%s: ahadone - CCB Abort failed to find CCB\n", + aha_name(aha)); + break; + case BMBI_ABORT: + case BMBI_ERROR: + /* An error occured */ + switch(bccb->hccb.ahastat) { + case AHASTAT_DATARUN_ERROR: + if (bccb->hccb.data_len <= 0) { + csio->ccb_h.status = CAM_DATA_RUN_ERR; + break; + } + /* FALLTHROUGH */ + case AHASTAT_NOERROR: + 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; + /* + * The aha writes the sense data at different + * offsets based on the scsi cmd len + */ + bcopy((caddr_t) &bccb->hccb.scsi_cdb + + bccb->hccb.cmd_len, + (caddr_t) &csio->sense_data, + bccb->hccb.sense_len); + break; + default: + break; + case SCSI_STATUS_OK: + csio->ccb_h.status = CAM_REQ_CMP; + break; + } + csio->resid = aha_a24tou(bccb->hccb.data_len); + break; + case AHASTAT_SELTIMEOUT: + csio->ccb_h.status = CAM_SEL_TIMEOUT; + break; + case AHASTAT_UNEXPECTED_BUSFREE: + csio->ccb_h.status = CAM_UNEXP_BUSFREE; + break; + case AHASTAT_INVALID_PHASE: + csio->ccb_h.status = CAM_SEQUENCE_FAIL; + break; + case AHASTAT_INVALID_ACTION_CODE: + panic("%s: Inavlid Action code", aha_name(aha)); + break; + case AHASTAT_INVALID_OPCODE: + panic("%s: Inavlid CCB Opcode code %x hccb = %p", + aha_name(aha), bccb->hccb.opcode, &bccb->hccb); + break; + case AHASTAT_LINKED_CCB_LUN_MISMATCH: + /* We don't even support linked commands... */ + panic("%s: Linked CCB Lun Mismatch", aha_name(aha)); + break; + case AHASTAT_INVALID_CCB_OR_SG_PARAM: + panic("%s: Invalid CCB or SG list", aha_name(aha)); + break; + case AHASTAT_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 AHASTAT_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; + } + 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; + ahafreeccb(aha, bccb); + xpt_done(ccb); + break; + case BMBI_OK: + /* All completed without incident */ + /* XXX DO WE NEED TO COPY SENSE BYTES HERE???? XXX */ + ccb->ccb_h.status |= CAM_REQ_CMP; + if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0) + ccb->ccb_h.status |= CAM_RELEASE_SIMQ; + ahafreeccb(aha, bccb); + xpt_done(ccb); + break; + } +} + +static int +ahareset(struct aha_softc* aha, 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; + aha_outb(aha, CONTROL_REG, reset_type); + + /* Wait 5sec. for Diagnostic start */ + timeout = 5 * 10000; + while (--timeout) { + status = aha_inb(aha, STATUS_REG); + if ((status & DIAG_ACTIVE) != 0) + break; + DELAY(100); + } + if (timeout == 0) { + if (bootverbose) + printf("%s: ahareset - Diagnostic Active failed to " + "assert. status = 0x%x\n", aha_name(aha), + status); + return (ETIMEDOUT); + } + + /* Wait 10sec. for Diagnostic end */ + timeout = 10 * 10000; + while (--timeout) { + status = aha_inb(aha, STATUS_REG); + if ((status & DIAG_ACTIVE) == 0) + break; + DELAY(100); + } + if (timeout == 0) { + panic("%s: ahareset - Diagnostic Active failed to drop. " + "status = 0x%x\n", aha_name(aha), status); + return (ETIMEDOUT); + } + + /* Wait for the host adapter to become ready or report a failure */ + timeout = 10000; + while (--timeout) { + status = aha_inb(aha, STATUS_REG); + if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0) + break; + DELAY(100); + } + if (timeout == 0) { + printf("%s: ahareset - Host adapter failed to come ready. " + "status = 0x%x\n", aha_name(aha), status); + return (ETIMEDOUT); + } + + /* If the diagnostics failed, tell the user */ + if ((status & DIAG_FAIL) != 0 + || (status & HA_READY) == 0) { + printf("%s: ahareset - Adapter failed diagnostics\n", + aha_name(aha)); + + if ((status & DATAIN_REG_READY) != 0) + printf("%s: ahareset - Host Adapter Error code = 0x%x\n", + aha_inb(aha, DATAIN_REG)); + return (ENXIO); + } + + /* If we've allocated mailboxes, initialize them */ + if (aha->init_level > 4) + ahainitmboxes(aha); + + /* If we've attached to the XPT, tell it about the event */ + if (aha->path != NULL) + xpt_async(AC_BUS_RESET, aha->path, NULL); + + /* + * Perform completion processing for all outstanding CCBs. + */ + while ((ccb_h = LIST_FIRST(&aha->pending_ccbs)) != NULL) { + struct aha_ccb *pending_bccb; + + pending_bccb = (struct aha_ccb *)ccb_h->ccb_bccb_ptr; + pending_bccb->hccb.ahastat = AHASTAT_HA_SCSI_BUS_RESET; + ahadone(aha, pending_bccb, BMBI_ERROR); + } + + return (0); +} + +/* + * Send a command to the adapter. + */ +int +aha_cmd(struct aha_softc *aha, aha_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 intstat; + u_int reply_buf_size; + int s; + + /* No data returned to start */ + reply_buf_size = reply_len; + reply_len = 0; + intstat = 0; + + aha->command_cmp = 0; + /* + * Wait up to 1 sec. for the adapter to become + * ready to accept commands. + */ + timeout = 10000; + while (--timeout) { + + status = aha_inb(aha, STATUS_REG); + if ((status & HA_READY) != 0 + && (status & CMD_REG_BUSY) == 0) + break; + DELAY(100); + } + if (timeout == 0) { + printf("%s: aha_cmd: Timeout waiting for adapter ready, " + "status = 0x%x\n", aha_name(aha), status); + return (ETIMEDOUT); + } + + /* + * Send the opcode followed by any necessary parameter bytes. + */ + aha_outb(aha, COMMAND_REG, opcode); + + /* + * Wait for up to 1sec to get the parameter list sent + */ + timeout = 10000; + while (param_len && --timeout) { + DELAY(100); + status = aha_inb(aha, STATUS_REG); + intstat = aha_inb(aha, INTSTAT_REG); + if ((intstat & (INTR_PENDING|CMD_COMPLETE)) + == (INTR_PENDING|CMD_COMPLETE)) + break; + if (aha->command_cmp != 0) { + status = aha->latched_status; + break; + } + if ((status & DATAIN_REG_READY) != 0) + break; + if ((status & CMD_REG_BUSY) == 0) { + aha_outb(aha, COMMAND_REG, *params++); + param_len--; + } + } + if (timeout == 0) { + printf("%s: aha_cmd: Timeout sending parameters, " + "status = 0x%x\n", aha_name(aha), status); + return (ETIMEDOUT); + } + + /* + * For all other commands, we wait for any output data + * and the final comand completion interrupt. + */ + while (--cmd_timeout) { + + status = aha_inb(aha, STATUS_REG); + intstat = aha_inb(aha, INTSTAT_REG); + if ((intstat & (INTR_PENDING|CMD_COMPLETE)) + == (INTR_PENDING|CMD_COMPLETE)) + break; + + if (aha->command_cmp != 0) { + status = aha->latched_status; + break; + } + + if ((status & DATAIN_REG_READY) != 0) { + u_int8_t data; + + data = aha_inb(aha, DATAIN_REG); + if (reply_len < reply_buf_size) { + *reply_data++ = data; + } else { + printf("%s: aha_cmd - Discarded reply data byte " + "for opcode 0x%x\n", aha_name(aha), + opcode); + } + reply_len++; + } + + DELAY(100); + } + if (timeout == 0) { + printf("%s: aha_cmd: Timeout waiting for reply data and " + "command complete.\n%s: status = 0x%x, intstat = 0x%x, " + "reply_len = %d\n", aha_name(aha), aha_name(aha), status, + intstat, reply_len); + return (ETIMEDOUT); + } + + /* + * Clear any pending interrupts. Block interrupts so our + * interrupt handler is not re-entered. + */ + s = splcam(); + aha_intr(aha); + splx(s); + + /* + * If the command was rejected by the controller, tell the caller. + */ + if ((status & CMD_INVALID) != 0) { + if (bootverbose) + printf("%s: Invalid Command 0x%x\n", aha_name(aha), + opcode); + /* + * 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. + */ + DELAY(1000); + status = aha_inb(aha, 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)) { + ahareset(aha, /*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 +ahainitmboxes(struct aha_softc *aha) +{ + int error; + init_24b_mbox_params_t init_mbox; + + bzero(aha->in_boxes, sizeof(aha_mbox_in_t) * aha->num_boxes); + bzero(aha->out_boxes, sizeof(aha_mbox_out_t) * aha->num_boxes); + aha->cur_inbox = aha->in_boxes; + aha->last_inbox = aha->in_boxes + aha->num_boxes - 1; + aha->cur_outbox = aha->out_boxes; + aha->last_outbox = aha->out_boxes + aha->num_boxes - 1; + + /* Tell the adapter about them */ + init_mbox.num_mboxes = aha->num_boxes; + ahautoa24(aha->mailbox_physbase, init_mbox.base_addr); + error = aha_cmd(aha, BOP_INITIALIZE_MBOX, (u_int8_t *)&init_mbox, + /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL, + /*reply_len*/0, DEFAULT_CMD_TIMEOUT); + + if (error != 0) + printf("ahainitmboxes: Initialization command failed\n"); + return (error); +} + +/* + * Update the XPT's idea of the negotiated transfer + * parameters for a particular target. + */ +static void +ahafetchtransinfo(struct aha_softc *aha, struct ccb_trans_settings* cts) +{ + setup_data_t setup_info; + u_int target; + u_int targ_offset; + u_int sync_period; + int error; + u_int8_t param; + targ_syncinfo_t sync_info; + + target = cts->ccb_h.target_id; + targ_offset = (target & 0x7); + + /* + * 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 = aha_cmd(aha, BOP_INQUIRE_SETUP_INFO, ¶m, /*paramlen*/1, + (u_int8_t*)&setup_info, sizeof(setup_info), + DEFAULT_CMD_TIMEOUT); + + if (error != 0) { + printf("%s: ahafetchtransinfo - Inquire Setup Info Failed\n", + aha_name(aha)); + return; + } + + sync_info = setup_info.syncinfo[targ_offset]; + + if (sync_info.sync == 0) + cts->sync_offset = 0; + else + cts->sync_offset = sync_info.offset; + + cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; + + sync_period = 2000 + (500 * sync_info.period); + + /* 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->valid = CCB_TRANS_SYNC_RATE_VALID + | CCB_TRANS_SYNC_OFFSET_VALID + | CCB_TRANS_BUS_WIDTH_VALID; + xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts); +} + +static void +ahamapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + struct aha_softc* aha; + + aha = (struct aha_softc*)arg; + aha->mailbox_physbase = segs->ds_addr; +} + +static void +ahamapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + struct aha_softc* aha; + + aha = (struct aha_softc*)arg; + aha->aha_ccb_physbase = segs->ds_addr; +} + +static void +ahamapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + + struct aha_softc* aha; + + aha = (struct aha_softc*)arg; + SLIST_FIRST(&aha->sg_maps)->sg_physaddr = segs->ds_addr; +} + +static void +ahapoll(struct cam_sim *sim) +{ +} + +void +ahatimeout(void *arg) +{ + struct aha_ccb *bccb; + union ccb *ccb; + struct aha_softc *aha; + int s; + u_int32_t paddr; + + bccb = (struct aha_ccb *)arg; + ccb = bccb->ccb; + aha = (struct aha_softc *)ccb->ccb_h.ccb_aha_ptr; + xpt_print_path(ccb->ccb_h.path); + printf("CCB 0x%x - timed out\n", bccb); + + s = splcam(); + + if ((bccb->flags & BCCB_ACTIVE) == 0) { + xpt_print_path(ccb->ccb_h.path); + printf("CCB 0x%x - timed out CCB already completed\n", 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(aha->sim, /*count*/1); + bccb->flags |= BCCB_RELEASE_SIMQ; + } + + ccb_h = LIST_FIRST(&aha->pending_ccbs); + while (ccb_h != NULL) { + struct aha_ccb *pending_bccb; + + pending_bccb = (struct aha_ccb *)ccb_h->ccb_bccb_ptr; + untimeout(ahatimeout, pending_bccb, ccb_h->timeout_ch); + ccb_h = LIST_NEXT(ccb_h, sim_links.le); + } + } + + if ((bccb->flags & BCCB_DEVICE_RESET) != 0 + || aha->cur_outbox->action_code != BMBO_FREE) { + /* + * 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. + */ + ccb->ccb_h.status = CAM_CMD_TIMEOUT; + ahareset(aha, /*hardreset*/TRUE); + printf("%s: No longer in timeout\n", aha_name(aha)); + } 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(ahatimeout, (caddr_t)bccb, 2 * hz); + aha->recovery_bccb->hccb.opcode = INITIATOR_BUS_DEV_RESET; + + /* No Data Transfer */ + aha->recovery_bccb->hccb.datain = TRUE; + aha->recovery_bccb->hccb.dataout = TRUE; + aha->recovery_bccb->hccb.ahastat = 0; + aha->recovery_bccb->hccb.sdstat = 0; + aha->recovery_bccb->hccb.target = ccb->ccb_h.target_id; + + /* Tell the adapter about this command */ + paddr = ahaccbvtop(aha, aha->recovery_bccb); + ahautoa24(paddr, aha->cur_outbox->ccb_addr); + aha->cur_outbox->action_code = BMBO_START; + aha_outb(aha, COMMAND_REG, BOP_START_MBOX); + ahanextoutbox(aha); + } + + splx(s); +} |