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-rw-r--r--sys/dev/ata/atapi-cam.c919
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;
-}
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