diff options
Diffstat (limited to 'sys/dev/ata/atapi-cam.c')
-rw-r--r-- | sys/dev/ata/atapi-cam.c | 919 |
1 files changed, 0 insertions, 919 deletions
diff --git a/sys/dev/ata/atapi-cam.c b/sys/dev/ata/atapi-cam.c deleted file mode 100644 index 0181785..0000000 --- a/sys/dev/ata/atapi-cam.c +++ /dev/null @@ -1,919 +0,0 @@ -/*- - * Copyright (c) 2001-2007 Thomas Quinot <thomas@cuivre.fr.eu.org> - * 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. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. 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 ``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 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. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bus.h> -#include <sys/kernel.h> -#include <sys/malloc.h> -#include <sys/ata.h> -#include <sys/taskqueue.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/sema.h> -#include <vm/uma.h> -#include <machine/resource.h> -#include <machine/bus.h> - -#include <cam/cam.h> -#include <cam/cam_ccb.h> -#include <cam/cam_periph.h> -#include <cam/cam_sim.h> -#include <cam/cam_xpt_sim.h> -#include <cam/cam_debug.h> -#include <cam/scsi/scsi_all.h> - -#include <dev/ata/ata-all.h> -#include <ata_if.h> - -/* private data associated with an ATA bus */ -struct atapi_xpt_softc { - struct ata_device atapi_cam_dev; /* must be first */ - device_t dev; - device_t parent; - struct ata_channel *ata_ch; - struct cam_path *path; - struct cam_sim *sim; - int flags; -#define BUS_REGISTERED 0x01 -#define RESOURCE_SHORTAGE 0x02 -#define DETACHING 0x04 - - TAILQ_HEAD(,atapi_hcb) pending_hcbs; - struct ata_device *atadev[2]; - struct mtx state_lock; -}; - -/* hardware command descriptor block */ -struct atapi_hcb { - struct atapi_xpt_softc *softc; - int unit; - int bus; - int target; - int lun; - union ccb *ccb; - int flags; -#define QUEUED 0x0001 -#define AUTOSENSE 0x0002 - char *dxfer_alloc; - TAILQ_ENTRY(atapi_hcb) chain; -}; - -enum reinit_reason { BOOT_ATTACH, ATTACH, RESET }; - -/* Device methods */ -static void atapi_cam_identify(driver_t *dev, device_t parent); -static int atapi_cam_probe(device_t dev); -static int atapi_cam_attach(device_t dev); -static int atapi_cam_detach(device_t dev); -static int atapi_cam_reinit(device_t dev); - -/* CAM XPT methods */ -static void atapi_action(struct cam_sim *, union ccb *); -static void atapi_poll(struct cam_sim *); -static void atapi_async(void *, u_int32_t, struct cam_path *, void *); -static void atapi_cb(struct ata_request *); - -/* Module methods */ -static int atapi_cam_event_handler(module_t mod, int what, void *arg); - -/* internal functions */ -static void reinit_bus(struct atapi_xpt_softc *scp, enum reinit_reason reason); -static void setup_async_cb(struct atapi_xpt_softc *, uint32_t); -static void cam_rescan(struct cam_sim *); -static void free_hcb_and_ccb_done(struct atapi_hcb *, u_int32_t); -static struct atapi_hcb *allocate_hcb(struct atapi_xpt_softc *, int, int, union ccb *); -static void free_hcb(struct atapi_hcb *hcb); -static void free_softc(struct atapi_xpt_softc *scp); - -static MALLOC_DEFINE(M_ATACAM, "ata_cam", "ATA driver CAM-XPT layer"); - -static device_method_t atapi_cam_methods[] = { - DEVMETHOD(device_identify, atapi_cam_identify), - DEVMETHOD(device_probe, atapi_cam_probe), - DEVMETHOD(device_attach, atapi_cam_attach), - DEVMETHOD(device_detach, atapi_cam_detach), - DEVMETHOD(ata_reinit, atapi_cam_reinit), - DEVMETHOD_END -}; - -static driver_t atapi_cam_driver = { - "atapicam", - atapi_cam_methods, - sizeof(struct atapi_xpt_softc) -}; - -static devclass_t atapi_cam_devclass; -DRIVER_MODULE(atapicam, ata, - atapi_cam_driver, - atapi_cam_devclass, - atapi_cam_event_handler, - /*arg*/NULL); -MODULE_VERSION(atapicam, 1); -MODULE_DEPEND(atapicam, ata, 1, 1, 1); -MODULE_DEPEND(atapicam, cam, 1, 1, 1); - -static void -atapi_cam_identify(driver_t *driver, device_t parent) -{ - struct atapi_xpt_softc *scp = - malloc (sizeof (struct atapi_xpt_softc), M_ATACAM, M_NOWAIT|M_ZERO); - device_t child; - - if (scp == NULL) { - printf ("atapi_cam_identify: out of memory"); - return; - } - - /* Assume one atapicam instance per parent channel instance. */ - child = device_add_child(parent, "atapicam", -1); - if (child == NULL) { - printf ("atapi_cam_identify: out of memory, can't add child"); - free (scp, M_ATACAM); - return; - } - scp->atapi_cam_dev.unit = -1; - scp->atapi_cam_dev.dev = child; - device_quiet(child); - device_set_softc(child, scp); -} - -static int -atapi_cam_probe(device_t dev) -{ - struct ata_device *atadev = device_get_softc (dev); - - KASSERT(atadev != NULL, ("expect valid struct ata_device")); - if (atadev->unit < 0) { - device_set_desc(dev, "ATAPI CAM Attachment"); - return (0); - } else { - return ENXIO; - } -} - -static int -atapi_cam_attach(device_t dev) -{ - struct atapi_xpt_softc *scp = NULL; - struct cam_devq *devq = NULL; - struct cam_sim *sim = NULL; - struct cam_path *path = NULL; - int unit, error; - - scp = (struct atapi_xpt_softc *)device_get_softc(dev); - if (scp == NULL) { - device_printf(dev, "Cannot get softc\n"); - return (ENOMEM); - } - - mtx_init(&scp->state_lock, "ATAPICAM lock", NULL, MTX_DEF); - - scp->dev = dev; - scp->parent = device_get_parent(dev); - scp->ata_ch = device_get_softc(scp->parent); - TAILQ_INIT(&scp->pending_hcbs); - unit = device_get_unit(device_get_parent(dev)); - - if ((devq = cam_simq_alloc(16)) == NULL) { - error = ENOMEM; - goto out; - } - - if ((sim = cam_sim_alloc(atapi_action, atapi_poll, "ata", - (void *)scp, unit, &scp->state_lock, 1, 1, devq)) == NULL) { - error = ENOMEM; - goto out; - } - scp->sim = sim; - - mtx_lock(&scp->state_lock); - if (xpt_bus_register(sim, dev, 0) != CAM_SUCCESS) { - error = EINVAL; - mtx_unlock(&scp->state_lock); - goto out; - } - scp->flags |= BUS_REGISTERED; - - if (xpt_create_path(&path, /*periph*/ NULL, - cam_sim_path(sim), CAM_TARGET_WILDCARD, - CAM_LUN_WILDCARD) != CAM_REQ_CMP) { - error = ENOMEM; - mtx_unlock(&scp->state_lock); - goto out; - } - scp->path = path; - - CAM_DEBUG(path, CAM_DEBUG_TRACE, ("Registered SIM for ata%d\n", unit)); - - setup_async_cb(scp, AC_LOST_DEVICE); - reinit_bus(scp, cold ? BOOT_ATTACH : ATTACH); - error = 0; - mtx_unlock(&scp->state_lock); - -out: - if (error != 0) - free_softc(scp); - - return (error); -} - -static int -atapi_cam_detach(device_t dev) -{ - struct atapi_xpt_softc *scp = device_get_softc(dev); - - mtx_lock(&scp->state_lock); - if (xpt_sim_opened(scp->sim)) { - mtx_unlock(&scp->state_lock); - return (EBUSY); - } - xpt_freeze_simq(scp->sim, 1 /*count*/); - scp->flags |= DETACHING; - mtx_unlock(&scp->state_lock); - free_softc(scp); - return (0); -} - -static int -atapi_cam_reinit(device_t dev) { - struct atapi_xpt_softc *scp = device_get_softc(dev); - - /* - * scp might be null if the bus is being reinitialised during - * the boot-up sequence, before the ATAPI bus is registered. - */ - - if (scp != NULL) { - mtx_lock(&scp->state_lock); - reinit_bus(scp, RESET); - mtx_unlock(&scp->state_lock); - } - return (0); -} - -static void -reinit_bus(struct atapi_xpt_softc *scp, enum reinit_reason reason) { - struct ata_device *old_atadev[2], *atadev; - device_t *children; - int nchildren, i, dev_changed; - - if (device_get_children(scp->parent, &children, &nchildren) != 0) { - return; - } - - old_atadev[0] = scp->atadev[0]; - old_atadev[1] = scp->atadev[1]; - scp->atadev[0] = NULL; - scp->atadev[1] = NULL; - - for (i = 0; i < nchildren; i++) { - /* XXX Does the child need to actually be attached yet? */ - if (children[i] != NULL) { - atadev = device_get_softc(children[i]); - if ((atadev->unit == ATA_MASTER) && - (scp->ata_ch->devices & ATA_ATAPI_MASTER) != 0) - scp->atadev[0] = atadev; - if ((atadev->unit == ATA_SLAVE) && - (scp->ata_ch->devices & ATA_ATAPI_SLAVE) != 0) - scp->atadev[1] = atadev; - } - } - dev_changed = (old_atadev[0] != scp->atadev[0]) - || (old_atadev[1] != scp->atadev[1]); - free(children, M_TEMP); - - switch (reason) { - case BOOT_ATTACH: - case ATTACH: - break; - case RESET: - xpt_async(AC_BUS_RESET, scp->path, NULL); - - if (!dev_changed) - break; - - cam_rescan(scp->sim); - break; - } -} - -static void -setup_async_cb(struct atapi_xpt_softc *scp, uint32_t events) -{ - struct ccb_setasync csa; - - xpt_setup_ccb(&csa.ccb_h, scp->path, /*priority*/ 5); - csa.ccb_h.func_code = XPT_SASYNC_CB; - csa.event_enable = events; - csa.callback = &atapi_async; - csa.callback_arg = scp->sim; - xpt_action((union ccb *) &csa); -} - -static void -atapi_action(struct cam_sim *sim, union ccb *ccb) -{ - struct atapi_xpt_softc *softc = (struct atapi_xpt_softc*)cam_sim_softc(sim); - struct ccb_hdr *ccb_h = &ccb->ccb_h; - struct atapi_hcb *hcb = NULL; - struct ata_request *request = NULL; - int unit = cam_sim_unit(sim); - int bus = cam_sim_bus(sim); - int len; - char *buf; - - switch (ccb_h->func_code) { - case XPT_PATH_INQ: { - struct ccb_pathinq *cpi = &ccb->cpi; - int tid = ccb_h->target_id; - - cpi->version_num = 1; - cpi->hba_inquiry = 0; - cpi->target_sprt = 0; - cpi->hba_misc = PIM_NO_6_BYTE; - cpi->hba_eng_cnt = 0; - bzero(cpi->vuhba_flags, sizeof(cpi->vuhba_flags)); - cpi->max_target = 1; - cpi->max_lun = 0; - cpi->async_flags = 0; - cpi->hpath_id = 0; - cpi->initiator_id = 7; - strncpy(cpi->sim_vid, "FreeBSD", sizeof(cpi->sim_vid)); - strncpy(cpi->hba_vid, "ATAPI", sizeof(cpi->hba_vid)); - strncpy(cpi->dev_name, cam_sim_name(sim), sizeof cpi->dev_name); - cpi->unit_number = cam_sim_unit(sim); - cpi->bus_id = cam_sim_bus(sim); - cpi->base_transfer_speed = 3300; - cpi->transport = XPORT_SPI; - cpi->transport_version = 2; - cpi->protocol = PROTO_SCSI; - cpi->protocol_version = SCSI_REV_2; - - if (softc->ata_ch && tid != CAM_TARGET_WILDCARD) { - if (softc->atadev[tid] == NULL) { - ccb->ccb_h.status = CAM_DEV_NOT_THERE; - xpt_done(ccb); - return; - } - switch (softc->atadev[ccb_h->target_id]->mode) { - case ATA_PIO1: - cpi->base_transfer_speed = 5200; - break; - case ATA_PIO2: - cpi->base_transfer_speed = 7000; - break; - case ATA_PIO3: - cpi->base_transfer_speed = 11000; - break; - case ATA_PIO4: - case ATA_DMA: - case ATA_WDMA2: - cpi->base_transfer_speed = 16000; - break; - case ATA_UDMA2: - cpi->base_transfer_speed = 33000; - break; - case ATA_UDMA4: - cpi->base_transfer_speed = 66000; - break; - case ATA_UDMA5: - cpi->base_transfer_speed = 100000; - break; - case ATA_UDMA6: - cpi->base_transfer_speed = 133000; - break; - case ATA_SA150: - cpi->base_transfer_speed = 150000; - break; - case ATA_SA300: - cpi->base_transfer_speed = 300000; - break; - default: - break; - } - } - cpi->maxio = softc->ata_ch->dma.max_iosize ? - softc->ata_ch->dma.max_iosize : DFLTPHYS; - ccb->ccb_h.status = CAM_REQ_CMP; - xpt_done(ccb); - return; - } - - case XPT_RESET_DEV: { - int tid = ccb_h->target_id; - - CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("dev reset\n")); - mtx_unlock(&softc->state_lock); - ata_controlcmd(softc->atadev[tid]->dev, ATA_DEVICE_RESET, 0, 0, 0); - mtx_lock(&softc->state_lock); - ccb->ccb_h.status = CAM_REQ_CMP; - xpt_done(ccb); - return; - } - - case XPT_RESET_BUS: - CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("bus reset\n")); - mtx_unlock(&softc->state_lock); - ata_reinit(softc->parent); - mtx_lock(&softc->state_lock); - ccb->ccb_h.status = CAM_REQ_CMP; - xpt_done(ccb); - return; - - case XPT_SET_TRAN_SETTINGS: - /* ignore these, we're not doing SCSI here */ - CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, - ("SET_TRAN_SETTINGS not supported\n")); - ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; - xpt_done(ccb); - return; - - case XPT_GET_TRAN_SETTINGS: { - struct ccb_trans_settings *cts = &ccb->cts; - cts->protocol = PROTO_SCSI; - cts->protocol_version = SCSI_REV_2; - cts->transport = XPORT_SPI; - cts->transport_version = XPORT_VERSION_UNSPECIFIED; - cts->proto_specific.valid = 0; - cts->xport_specific.valid = 0; - /* nothing more to do */ - ccb->ccb_h.status = CAM_REQ_CMP; - CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("GET_TRAN_SETTINGS\n")); - xpt_done(ccb); - return; - } - - case XPT_CALC_GEOMETRY: { - CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("CALC_GEOMETRY\n")); - cam_calc_geometry(&ccb->ccg, /*extended*/1); - xpt_done(ccb); - return; - } - - case XPT_SCSI_IO: { - struct ccb_scsiio *csio = &ccb->csio; - int tid = ccb_h->target_id, lid = ccb_h->target_lun; - int request_flags = ATA_R_ATAPI; - - CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE, ("XPT_SCSI_IO\n")); - - if (softc->flags & DETACHING) { - ccb->ccb_h.status = CAM_REQ_ABORTED; - xpt_done(ccb); - return; - } - - if (softc->atadev[tid] == NULL) { - ccb->ccb_h.status = CAM_DEV_NOT_THERE; - xpt_done(ccb); - return; - } - - /* check that this request was not aborted already */ - if ((ccb_h->status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { - printf("XPT_SCSI_IO received but already in progress?\n"); - xpt_done(ccb); - return; - } - if (lid > 0) { - CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE, - ("SCSI IO received for invalid lun %d\n", lid)); - goto action_invalid; - } - if (csio->cdb_len > sizeof request->u.atapi.ccb) { - CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE, - ("CAM CCB too long for ATAPI")); - goto action_invalid; - } - - switch (ccb_h->flags & CAM_DIR_MASK) { - case CAM_DIR_IN: - request_flags |= ATA_R_READ; - break; - case CAM_DIR_OUT: - request_flags |= ATA_R_WRITE; - break; - case CAM_DIR_NONE: - /* No flags need to be set */ - break; - default: - device_printf(softc->dev, "unknown IO operation\n"); - goto action_invalid; - } - - if ((hcb = allocate_hcb(softc, unit, bus, ccb)) == NULL) { - printf("cannot allocate ATAPI/CAM hcb\n"); - goto action_oom; - } - if ((request = ata_alloc_request()) == NULL) { - printf("cannot allocate ATAPI/CAM request\n"); - goto action_oom; - } - - bcopy((ccb_h->flags & CAM_CDB_POINTER) ? - csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes, - request->u.atapi.ccb, csio->cdb_len); -#ifdef CAMDEBUG - if (CAM_DEBUGGED(ccb_h->path, CAM_DEBUG_CDB)) { - char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1]; - - printf("atapi_action: hcb@%p: %s\n", hcb, - scsi_cdb_string(request->u.atapi.ccb, cdb_str, sizeof(cdb_str))); - } - if (CAM_DEBUGGED(ccb_h->path, CAM_DEBUG_SUBTRACE)) { - request_flags |= ATA_R_DEBUG; - } -#endif - - len = csio->dxfer_len; - buf = csio->data_ptr; - - /* some SCSI commands require special processing */ - switch (request->u.atapi.ccb[0]) { - case INQUIRY: { - /* - * many ATAPI devices seem to report more than - * SHORT_INQUIRY_LENGTH bytes of available INQUIRY - * information, but respond with some incorrect condition - * when actually asked for it, so we are going to pretend - * that only SHORT_INQUIRY_LENGTH are expected, anyway. - */ - struct scsi_inquiry *inq = (struct scsi_inquiry *) &request->u.atapi.ccb[0]; - - if (inq->byte2 == 0 && inq->page_code == 0 && - scsi_2btoul(inq->length) > SHORT_INQUIRY_LENGTH) { - bzero(buf, len); - len = SHORT_INQUIRY_LENGTH; - scsi_ulto2b(len, inq->length); - } - break; - } - case READ_6: - /* FALLTHROUGH */ - - case WRITE_6: - CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE, - ("Translating %s into _10 equivalent\n", - (request->u.atapi.ccb[0] == READ_6) ? "READ_6" : "WRITE_6")); - request->u.atapi.ccb[0] |= 0x20; - request->u.atapi.ccb[9] = request->u.atapi.ccb[5]; - request->u.atapi.ccb[8] = request->u.atapi.ccb[4]; - request->u.atapi.ccb[7] = 0; - request->u.atapi.ccb[6] = 0; - request->u.atapi.ccb[5] = request->u.atapi.ccb[3]; - request->u.atapi.ccb[4] = request->u.atapi.ccb[2]; - request->u.atapi.ccb[3] = request->u.atapi.ccb[1] & 0x1f; - request->u.atapi.ccb[2] = 0; - request->u.atapi.ccb[1] = 0; - /* FALLTHROUGH */ - - case READ_10: - /* FALLTHROUGH */ - case WRITE_10: - /* FALLTHROUGH */ - case READ_12: - /* FALLTHROUGH */ - case WRITE_12: - /* - * Enable DMA (if target supports it) for READ and WRITE commands - * only, as some combinations of drive, controller and chipset do - * not behave correctly when DMA is enabled for other commands. - */ - if (softc->atadev[tid]->mode >= ATA_DMA) - request_flags |= ATA_R_DMA; - break; - - } - - if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_IN && (len & 1)) { - /* ATA always transfers an even number of bytes */ - if ((buf = hcb->dxfer_alloc - = malloc(++len, M_ATACAM, M_NOWAIT | M_ZERO)) == NULL) { - printf("cannot allocate ATAPI/CAM buffer\n"); - goto action_oom; - } - } - request->dev = softc->atadev[tid]->dev; - request->driver = hcb; - request->data = buf; - request->bytecount = len; - request->transfersize = min(request->bytecount, 65534); - request->timeout = (ccb_h->timeout + 999) / 1000; - request->callback = &atapi_cb; - request->flags = request_flags; - - /* - * no retries are to be performed at the ATA level; any retries - * will be done by CAM. - */ - request->retries = 0; - - TAILQ_INSERT_TAIL(&softc->pending_hcbs, hcb, chain); - hcb->flags |= QUEUED; - ccb_h->status |= CAM_SIM_QUEUED; - mtx_unlock(&softc->state_lock); - - ata_queue_request(request); - mtx_lock(&softc->state_lock); - return; - } - - default: - CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE, - ("unsupported function code 0x%02x\n", ccb_h->func_code)); - goto action_invalid; - } - - /* NOTREACHED */ - -action_oom: - if (request != NULL) - ata_free_request(request); - if (hcb != NULL) - free_hcb(hcb); - xpt_print_path(ccb_h->path); - printf("out of memory, freezing queue.\n"); - softc->flags |= RESOURCE_SHORTAGE; - xpt_freeze_simq(sim, /*count*/ 1); - ccb_h->status = CAM_REQUEUE_REQ; - xpt_done(ccb); - return; - -action_invalid: - ccb_h->status = CAM_REQ_INVALID; - xpt_done(ccb); - return; -} - -static void -atapi_poll(struct cam_sim *sim) -{ - struct atapi_xpt_softc *softc = - (struct atapi_xpt_softc*)cam_sim_softc(sim); - - mtx_unlock(&softc->state_lock); - ata_interrupt(softc->ata_ch); - mtx_lock(&softc->state_lock); -} - -static void -atapi_cb(struct ata_request *request) -{ - struct atapi_xpt_softc *scp; - struct atapi_hcb *hcb; - struct ccb_scsiio *csio; - u_int32_t rc; - - hcb = (struct atapi_hcb *)request->driver; - scp = hcb->softc; - csio = &hcb->ccb->csio; - -#ifdef CAMDEBUG -# define err (request->u.atapi.sense.key) - if (CAM_DEBUGGED(csio->ccb_h.path, CAM_DEBUG_CDB)) { - printf("atapi_cb: hcb@%p sense = %02x: sk = %01x%s%s%s\n", - hcb, err, err & 0x0f, - (err & 0x80) ? ", Filemark" : "", - (err & 0x40) ? ", EOM" : "", - (err & 0x20) ? ", ILI" : ""); - device_printf(request->dev, - "cmd %s status %02x result %02x error %02x\n", - ata_cmd2str(request), - request->status, request->result, request->error); - } -#endif - - if ((hcb->flags & AUTOSENSE) != 0) { - rc = CAM_SCSI_STATUS_ERROR; - if (request->result == 0) { - csio->ccb_h.status |= CAM_AUTOSNS_VALID; - } - } else if (request->result != 0) { - if ((request->flags & ATA_R_TIMEOUT) != 0) { - rc = CAM_CMD_TIMEOUT; - } else { - rc = CAM_SCSI_STATUS_ERROR; - csio->scsi_status = SCSI_STATUS_CHECK_COND; - - if ((csio->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0) { -#if 0 - static const int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0, - sizeof(struct atapi_sense), 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0 }; - - bcopy (ccb, request->u.atapi.ccb, sizeof ccb); - request->data = (caddr_t)&csio->sense_data; - request->bytecount = sizeof(struct atapi_sense); - request->transfersize = min(request->bytecount, 65534); - request->timeout = (csio->ccb_h.timeout + 999) / 1000; - request->retries = 2; - request->flags = ATA_R_QUIET|ATA_R_ATAPI|ATA_R_IMMEDIATE; - hcb->flags |= AUTOSENSE; - - ata_queue_request(request); - return; -#else - /* - * Use auto-sense data from the ATA layer, if it has - * issued a REQUEST SENSE automatically and that operation - * returned without error. - */ - if (request->u.atapi.sense.key != 0 && request->error == 0) { - bcopy (&request->u.atapi.sense, &csio->sense_data, sizeof(struct atapi_sense)); - csio->ccb_h.status |= CAM_AUTOSNS_VALID; - } - } -#endif - } - } else { - rc = CAM_REQ_CMP; - csio->scsi_status = SCSI_STATUS_OK; - if (((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) && - hcb->dxfer_alloc != NULL) - { - bcopy(hcb->dxfer_alloc, csio->data_ptr, csio->dxfer_len); - } - } - - mtx_lock(&scp->state_lock); - free_hcb_and_ccb_done(hcb, rc); - mtx_unlock(&scp->state_lock); - - ata_free_request(request); -} - -static void -free_hcb_and_ccb_done(struct atapi_hcb *hcb, u_int32_t status) -{ - struct atapi_xpt_softc *softc; - union ccb *ccb; - - if (hcb == NULL) - return; - - softc = hcb->softc; - ccb = hcb->ccb; - - /* we're about to free a hcb, so the shortage has ended */ - if (softc->flags & RESOURCE_SHORTAGE) { - softc->flags &= ~RESOURCE_SHORTAGE; - status |= CAM_RELEASE_SIMQ; - } - free_hcb(hcb); - ccb->ccb_h.status = - status | (ccb->ccb_h.status & ~(CAM_STATUS_MASK | CAM_SIM_QUEUED)); - xpt_done(ccb); -} - -static void -atapi_async(void *callback_arg, u_int32_t code, - struct cam_path* path, void *arg) -{ - int targ; - - GIANT_REQUIRED; - - switch (code) { - case AC_LOST_DEVICE: - targ = xpt_path_target_id(path); - xpt_print_path(path); - if (targ == -1) - printf("Lost host adapter\n"); - else - printf("Lost target %d???\n", targ); - break; - - default: - break; - } -} - -static void -cam_rescan(struct cam_sim *sim) -{ - union ccb *ccb; - - ccb = xpt_alloc_ccb_nowait(); - if (ccb == NULL) - return; - if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(sim), - CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { - xpt_free_ccb(ccb); - return; - } - CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("Rescanning ATAPI bus.\n")); - xpt_rescan(ccb); - /* scan is in progress now */ -} - -static struct atapi_hcb * -allocate_hcb(struct atapi_xpt_softc *softc, int unit, int bus, union ccb *ccb) -{ - struct atapi_hcb *hcb = (struct atapi_hcb *) - malloc(sizeof(struct atapi_hcb), M_ATACAM, M_NOWAIT | M_ZERO); - - if (hcb != NULL) { - hcb->softc = softc; - hcb->unit = unit; - hcb->bus = bus; - hcb->ccb = ccb; - } - return hcb; -} - -static void -free_hcb(struct atapi_hcb *hcb) -{ - if ((hcb->flags & QUEUED) != 0) - TAILQ_REMOVE(&hcb->softc->pending_hcbs, hcb, chain); - if (hcb->dxfer_alloc != NULL) - free(hcb->dxfer_alloc, M_ATACAM); - free(hcb, M_ATACAM); -} - -static void -free_softc(struct atapi_xpt_softc *scp) -{ - struct atapi_hcb *hcb, *thcb; - - if (scp != NULL) { - mtx_lock(&scp->state_lock); - TAILQ_FOREACH_SAFE(hcb, &scp->pending_hcbs, chain, thcb) { - free_hcb_and_ccb_done(hcb, CAM_UNREC_HBA_ERROR); - } - if (scp->path != NULL) { - setup_async_cb(scp, 0); - xpt_free_path(scp->path); - } - if ((scp->flags & BUS_REGISTERED) != 0) { - if (xpt_bus_deregister(cam_sim_path(scp->sim)) == CAM_REQ_CMP) - scp->flags &= ~BUS_REGISTERED; - } - if (scp->sim != NULL) { - if ((scp->flags & BUS_REGISTERED) == 0) - cam_sim_free(scp->sim, /*free_devq*/TRUE); - else - printf("Can't free %s SIM (still registered)\n", - cam_sim_name(scp->sim)); - } - mtx_destroy(&scp->state_lock); - } -} - -static int -atapi_cam_event_handler(module_t mod, int what, void *arg) { - device_t *devlist; - int devcount; - - switch (what) { - case MOD_UNLOAD: - if (devclass_get_devices(atapi_cam_devclass, &devlist, &devcount) - != 0) - return ENXIO; - if (devlist != NULL) { - while (devlist != NULL && devcount > 0) { - device_t child = devlist[--devcount]; - struct atapi_xpt_softc *scp = device_get_softc(child); - - device_delete_child(device_get_parent(child),child); - if (scp != NULL) - free(scp, M_ATACAM); - } - free(devlist, M_TEMP); - } - break; - - default: - break; - } - return 0; -} |