8c38cd7ceb
It is not perfect, but better then nothing.
925 lines
24 KiB
C
925 lines
24 KiB
C
/*-
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* Copyright (c) 2001-2007 Thomas Quinot <thomas@cuivre.fr.eu.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/ata.h>
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#include <sys/taskqueue.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sema.h>
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#include <vm/uma.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_periph.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/cam_debug.h>
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#include <cam/scsi/scsi_all.h>
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#include <dev/ata/ata-all.h>
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#include <ata_if.h>
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/* private data associated with an ATA bus */
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struct atapi_xpt_softc {
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struct ata_device atapi_cam_dev; /* must be first */
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device_t dev;
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device_t parent;
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struct ata_channel *ata_ch;
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struct cam_path *path;
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struct cam_sim *sim;
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int flags;
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#define BUS_REGISTERED 0x01
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#define RESOURCE_SHORTAGE 0x02
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#define DETACHING 0x04
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TAILQ_HEAD(,atapi_hcb) pending_hcbs;
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struct ata_device *atadev[2];
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struct mtx state_lock;
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};
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/* hardware command descriptor block */
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struct atapi_hcb {
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struct atapi_xpt_softc *softc;
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int unit;
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int bus;
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int target;
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int lun;
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union ccb *ccb;
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int flags;
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#define QUEUED 0x0001
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#define AUTOSENSE 0x0002
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char *dxfer_alloc;
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TAILQ_ENTRY(atapi_hcb) chain;
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};
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enum reinit_reason { BOOT_ATTACH, ATTACH, RESET };
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/* Device methods */
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static void atapi_cam_identify(driver_t *dev, device_t parent);
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static int atapi_cam_probe(device_t dev);
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static int atapi_cam_attach(device_t dev);
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static int atapi_cam_detach(device_t dev);
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static int atapi_cam_reinit(device_t dev);
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/* CAM XPT methods */
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static void atapi_action(struct cam_sim *, union ccb *);
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static void atapi_poll(struct cam_sim *);
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static void atapi_async(void *, u_int32_t, struct cam_path *, void *);
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static void atapi_cb(struct ata_request *);
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/* Module methods */
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static int atapi_cam_event_handler(module_t mod, int what, void *arg);
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/* internal functions */
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static void reinit_bus(struct atapi_xpt_softc *scp, enum reinit_reason reason);
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static void setup_async_cb(struct atapi_xpt_softc *, uint32_t);
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static void cam_rescan(struct cam_sim *);
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static void free_hcb_and_ccb_done(struct atapi_hcb *, u_int32_t);
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static struct atapi_hcb *allocate_hcb(struct atapi_xpt_softc *, int, int, union ccb *);
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static void free_hcb(struct atapi_hcb *hcb);
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static void free_softc(struct atapi_xpt_softc *scp);
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static MALLOC_DEFINE(M_ATACAM, "ata_cam", "ATA driver CAM-XPT layer");
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static device_method_t atapi_cam_methods[] = {
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DEVMETHOD(device_identify, atapi_cam_identify),
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DEVMETHOD(device_probe, atapi_cam_probe),
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DEVMETHOD(device_attach, atapi_cam_attach),
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DEVMETHOD(device_detach, atapi_cam_detach),
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DEVMETHOD(ata_reinit, atapi_cam_reinit),
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{0, 0}
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};
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static driver_t atapi_cam_driver = {
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"atapicam",
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atapi_cam_methods,
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sizeof(struct atapi_xpt_softc)
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};
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static devclass_t atapi_cam_devclass;
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DRIVER_MODULE(atapicam, ata,
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atapi_cam_driver,
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atapi_cam_devclass,
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atapi_cam_event_handler,
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/*arg*/NULL);
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MODULE_VERSION(atapicam, 1);
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MODULE_DEPEND(atapicam, ata, 1, 1, 1);
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MODULE_DEPEND(atapicam, cam, 1, 1, 1);
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static void
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atapi_cam_identify(driver_t *driver, device_t parent)
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{
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struct atapi_xpt_softc *scp =
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malloc (sizeof (struct atapi_xpt_softc), M_ATACAM, M_NOWAIT|M_ZERO);
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device_t child;
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if (scp == NULL) {
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printf ("atapi_cam_identify: out of memory");
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return;
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}
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/* Assume one atapicam instance per parent channel instance. */
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child = device_add_child(parent, "atapicam", -1);
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if (child == NULL) {
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printf ("atapi_cam_identify: out of memory, can't add child");
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free (scp, M_ATACAM);
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return;
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}
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scp->atapi_cam_dev.unit = -1;
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scp->atapi_cam_dev.dev = child;
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device_quiet(child);
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device_set_softc(child, scp);
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}
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static int
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atapi_cam_probe(device_t dev)
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{
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struct ata_device *atadev = device_get_softc (dev);
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KASSERT(atadev != NULL, ("expect valid struct ata_device"));
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if (atadev->unit < 0) {
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device_set_desc(dev, "ATAPI CAM Attachment");
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return (0);
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} else {
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return ENXIO;
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}
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}
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static int
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atapi_cam_attach(device_t dev)
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{
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struct atapi_xpt_softc *scp = NULL;
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struct cam_devq *devq = NULL;
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struct cam_sim *sim = NULL;
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struct cam_path *path = NULL;
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int unit, error;
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scp = (struct atapi_xpt_softc *)device_get_softc(dev);
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if (scp == NULL) {
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device_printf(dev, "Cannot get softc\n");
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return (ENOMEM);
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}
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mtx_init(&scp->state_lock, "ATAPICAM lock", NULL, MTX_DEF);
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scp->dev = dev;
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scp->parent = device_get_parent(dev);
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scp->ata_ch = device_get_softc(scp->parent);
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TAILQ_INIT(&scp->pending_hcbs);
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unit = device_get_unit(device_get_parent(dev));
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if ((devq = cam_simq_alloc(16)) == NULL) {
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error = ENOMEM;
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goto out;
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}
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if ((sim = cam_sim_alloc(atapi_action, atapi_poll, "ata",
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(void *)scp, unit, &scp->state_lock, 1, 1, devq)) == NULL) {
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error = ENOMEM;
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goto out;
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}
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scp->sim = sim;
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mtx_lock(&scp->state_lock);
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if (xpt_bus_register(sim, dev, 0) != CAM_SUCCESS) {
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error = EINVAL;
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mtx_unlock(&scp->state_lock);
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goto out;
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}
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scp->flags |= BUS_REGISTERED;
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if (xpt_create_path(&path, /*periph*/ NULL,
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cam_sim_path(sim), CAM_TARGET_WILDCARD,
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CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
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error = ENOMEM;
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mtx_unlock(&scp->state_lock);
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goto out;
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}
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scp->path = path;
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CAM_DEBUG(path, CAM_DEBUG_TRACE, ("Registered SIM for ata%d\n", unit));
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setup_async_cb(scp, AC_LOST_DEVICE);
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reinit_bus(scp, cold ? BOOT_ATTACH : ATTACH);
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error = 0;
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mtx_unlock(&scp->state_lock);
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out:
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if (error != 0)
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free_softc(scp);
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return (error);
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}
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static int
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atapi_cam_detach(device_t dev)
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{
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struct atapi_xpt_softc *scp = device_get_softc(dev);
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mtx_lock(&scp->state_lock);
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if (xpt_sim_opened(scp->sim)) {
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mtx_unlock(&scp->state_lock);
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return (EBUSY);
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}
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xpt_freeze_simq(scp->sim, 1 /*count*/);
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scp->flags |= DETACHING;
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mtx_unlock(&scp->state_lock);
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free_softc(scp);
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return (0);
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}
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static int
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atapi_cam_reinit(device_t dev) {
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struct atapi_xpt_softc *scp = device_get_softc(dev);
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/*
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* scp might be null if the bus is being reinitialised during
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* the boot-up sequence, before the ATAPI bus is registered.
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*/
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if (scp != NULL) {
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mtx_lock(&scp->state_lock);
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reinit_bus(scp, RESET);
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mtx_unlock(&scp->state_lock);
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}
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return (0);
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}
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static void
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reinit_bus(struct atapi_xpt_softc *scp, enum reinit_reason reason) {
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struct ata_device *old_atadev[2], *atadev;
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device_t *children;
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int nchildren, i, dev_changed;
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if (device_get_children(scp->parent, &children, &nchildren) != 0) {
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return;
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}
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old_atadev[0] = scp->atadev[0];
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old_atadev[1] = scp->atadev[1];
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scp->atadev[0] = NULL;
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scp->atadev[1] = NULL;
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for (i = 0; i < nchildren; i++) {
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/* XXX Does the child need to actually be attached yet? */
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if (children[i] != NULL) {
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atadev = device_get_softc(children[i]);
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if ((atadev->unit == ATA_MASTER) &&
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(scp->ata_ch->devices & ATA_ATAPI_MASTER) != 0)
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scp->atadev[0] = atadev;
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if ((atadev->unit == ATA_SLAVE) &&
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(scp->ata_ch->devices & ATA_ATAPI_SLAVE) != 0)
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scp->atadev[1] = atadev;
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}
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}
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dev_changed = (old_atadev[0] != scp->atadev[0])
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|| (old_atadev[1] != scp->atadev[1]);
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free(children, M_TEMP);
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switch (reason) {
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case BOOT_ATTACH:
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case ATTACH:
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break;
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case RESET:
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xpt_async(AC_BUS_RESET, scp->path, NULL);
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if (!dev_changed)
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break;
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cam_rescan(scp->sim);
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break;
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}
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}
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static void
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setup_async_cb(struct atapi_xpt_softc *scp, uint32_t events)
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{
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struct ccb_setasync csa;
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xpt_setup_ccb(&csa.ccb_h, scp->path, /*priority*/ 5);
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csa.ccb_h.func_code = XPT_SASYNC_CB;
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csa.event_enable = events;
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csa.callback = &atapi_async;
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csa.callback_arg = scp->sim;
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xpt_action((union ccb *) &csa);
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}
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static void
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atapi_action(struct cam_sim *sim, union ccb *ccb)
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{
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struct atapi_xpt_softc *softc = (struct atapi_xpt_softc*)cam_sim_softc(sim);
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struct ccb_hdr *ccb_h = &ccb->ccb_h;
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struct atapi_hcb *hcb = NULL;
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struct ata_request *request = NULL;
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int unit = cam_sim_unit(sim);
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int bus = cam_sim_bus(sim);
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int len;
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char *buf;
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switch (ccb_h->func_code) {
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case XPT_PATH_INQ: {
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struct ccb_pathinq *cpi = &ccb->cpi;
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int tid = ccb_h->target_id;
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cpi->version_num = 1;
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cpi->hba_inquiry = 0;
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cpi->target_sprt = 0;
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cpi->hba_misc = PIM_NO_6_BYTE;
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cpi->hba_eng_cnt = 0;
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bzero(cpi->vuhba_flags, sizeof(cpi->vuhba_flags));
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cpi->max_target = 1;
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cpi->max_lun = 0;
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cpi->async_flags = 0;
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cpi->hpath_id = 0;
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cpi->initiator_id = 7;
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strncpy(cpi->sim_vid, "FreeBSD", sizeof(cpi->sim_vid));
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strncpy(cpi->hba_vid, "ATAPI", sizeof(cpi->hba_vid));
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strncpy(cpi->dev_name, cam_sim_name(sim), sizeof cpi->dev_name);
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cpi->unit_number = cam_sim_unit(sim);
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cpi->bus_id = cam_sim_bus(sim);
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cpi->base_transfer_speed = 3300;
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cpi->transport = XPORT_SPI;
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cpi->transport_version = 2;
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cpi->protocol = PROTO_SCSI;
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cpi->protocol_version = SCSI_REV_2;
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if (softc->ata_ch && tid != CAM_TARGET_WILDCARD) {
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if (softc->atadev[tid] == NULL) {
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ccb->ccb_h.status = CAM_DEV_NOT_THERE;
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xpt_done(ccb);
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return;
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}
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switch (softc->atadev[ccb_h->target_id]->mode) {
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case ATA_PIO1:
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cpi->base_transfer_speed = 5200;
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break;
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case ATA_PIO2:
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cpi->base_transfer_speed = 7000;
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break;
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case ATA_PIO3:
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cpi->base_transfer_speed = 11000;
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break;
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case ATA_PIO4:
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case ATA_DMA:
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case ATA_WDMA2:
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cpi->base_transfer_speed = 16000;
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break;
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case ATA_UDMA2:
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cpi->base_transfer_speed = 33000;
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break;
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case ATA_UDMA4:
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cpi->base_transfer_speed = 66000;
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break;
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case ATA_UDMA5:
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cpi->base_transfer_speed = 100000;
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break;
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case ATA_UDMA6:
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cpi->base_transfer_speed = 133000;
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break;
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case ATA_SA150:
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cpi->base_transfer_speed = 150000;
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break;
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case ATA_SA300:
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cpi->base_transfer_speed = 300000;
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break;
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default:
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break;
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}
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}
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cpi->maxio = softc->ata_ch->dma.max_iosize ?
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softc->ata_ch->dma.max_iosize : DFLTPHYS;
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ccb->ccb_h.status = CAM_REQ_CMP;
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xpt_done(ccb);
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return;
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}
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case XPT_RESET_DEV: {
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int tid = ccb_h->target_id;
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CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("dev reset\n"));
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mtx_unlock(&softc->state_lock);
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ata_controlcmd(softc->atadev[tid]->dev, ATA_DEVICE_RESET, 0, 0, 0);
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mtx_lock(&softc->state_lock);
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ccb->ccb_h.status = CAM_REQ_CMP;
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xpt_done(ccb);
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return;
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}
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case XPT_RESET_BUS:
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CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("bus reset\n"));
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mtx_unlock(&softc->state_lock);
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ata_reinit(softc->parent);
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mtx_lock(&softc->state_lock);
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ccb->ccb_h.status = CAM_REQ_CMP;
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xpt_done(ccb);
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return;
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case XPT_SET_TRAN_SETTINGS:
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/* ignore these, we're not doing SCSI here */
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CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
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("SET_TRAN_SETTINGS not supported\n"));
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ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
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xpt_done(ccb);
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return;
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case XPT_GET_TRAN_SETTINGS: {
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struct ccb_trans_settings *cts = &ccb->cts;
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cts->protocol = PROTO_SCSI;
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cts->protocol_version = SCSI_REV_2;
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cts->transport = XPORT_SPI;
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cts->transport_version = XPORT_VERSION_UNSPECIFIED;
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cts->proto_specific.valid = 0;
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cts->xport_specific.valid = 0;
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/* nothing more to do */
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ccb->ccb_h.status = CAM_REQ_CMP;
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CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("GET_TRAN_SETTINGS\n"));
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xpt_done(ccb);
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return;
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}
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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;
|
|
}
|
|
if ((ccb_h->flags & CAM_SCATTER_VALID)) {
|
|
/* scatter-gather not supported */
|
|
xpt_print_path(ccb_h->path);
|
|
printf("ATAPI/CAM does not support scatter-gather yet!\n");
|
|
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 &&
|
|
inq->length > SHORT_INQUIRY_LENGTH) {
|
|
bzero(buf, len);
|
|
len = inq->length = SHORT_INQUIRY_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;
|
|
|
|
if (scp != NULL) {
|
|
mtx_lock(&scp->state_lock);
|
|
TAILQ_FOREACH(hcb, &scp->pending_hcbs, chain) {
|
|
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;
|
|
}
|