c48d17750f
in *devsw[] rather than the 46 local copies of the same functions. (grog will do the same for vinum when he has time)
430 lines
12 KiB
C
430 lines
12 KiB
C
/*-
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* Copyright (c) 1998,1999 Søren Schmidt
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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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* $Id: atapi-fd.c,v 1.5 1999/04/10 18:53:35 sos Exp $
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*/
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#include "ata.h"
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#include "atapifd.h"
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#include "opt_devfs.h"
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#if NATA > 0 && NATAPIFD > 0
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/disklabel.h>
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#include <sys/diskslice.h>
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#include <sys/devicestat.h>
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#include <sys/cdio.h>
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#include <sys/fcntl.h>
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#include <sys/conf.h>
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#include <sys/stat.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif
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#include <pci/pcivar.h>
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#include <dev/ata/ata-all.h>
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#include <dev/ata/atapi-all.h>
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#include <dev/ata/atapi-fd.h>
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static d_open_t afdopen;
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static d_close_t afdclose;
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static d_ioctl_t afdioctl;
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static d_strategy_t afdstrategy;
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#define BDEV_MAJOR 32
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#define CDEV_MAJOR 118
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static struct cdevsw afd_cdevsw = {
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afdopen, afdclose, physread, physwrite,
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afdioctl, nostop, nullreset, nodevtotty,
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seltrue, nommap, afdstrategy, "afd",
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NULL, -1, nodump, nopsize,
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D_DISK, 0, -1
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};
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#define NUNIT 8
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#define UNIT(d) ((minor(d) >> 3) & 3)
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#define F_OPEN 0x0001 /* The device is opened */
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#define F_MEDIA_CHANGED 0x0002 /* The media have changed */
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static struct afd_softc *afdtab[NUNIT]; /* Drive info by unit number */
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static int32_t afdnlun = 0; /* Number of config'd drives */
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int32_t afdattach(struct atapi_softc *);
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static int32_t afd_sense(struct afd_softc *);
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static void afd_describe(struct afd_softc *);
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static void afd_strategy(struct buf *);
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static void afd_start(struct afd_softc *);
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static void afd_done(struct atapi_request *);
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static int32_t afd_start_device(struct afd_softc *, int32_t);
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static int32_t afd_lock_device(struct afd_softc *, int32_t);
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static int32_t afd_eject(struct afd_softc *, int32_t);
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static void afd_drvinit(void *);
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int32_t
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afdattach(struct atapi_softc *atp)
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{
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struct afd_softc *fdp;
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if (afdnlun >= NUNIT) {
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printf("afd: too many units\n");
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return -1;
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}
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fdp = malloc(sizeof(struct afd_softc), M_TEMP, M_NOWAIT);
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if (!fdp) {
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printf("afd: out of memory\n");
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return -1;
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}
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bzero(fdp, sizeof(struct afd_softc));
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bufq_init(&fdp->buf_queue);
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fdp->atp = atp;
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fdp->lun = afdnlun;
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fdp->flags = F_MEDIA_CHANGED;
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if (afd_sense(fdp)) {
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free(fdp, M_TEMP);
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return -1;
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}
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afd_describe(fdp);
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afdtab[afdnlun++] = fdp;
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devstat_add_entry(&fdp->stats, "afd", fdp->lun, DEV_BSIZE,
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DEVSTAT_NO_ORDERED_TAGS,
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DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,
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0x178);
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#ifdef DEVFS
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fdp->cdevs_token = devfs_add_devswf(&afd_cdevsw, dkmakeminor(fdp->lun, 0,0),
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DV_CHR, UID_ROOT, GID_OPERATOR,
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0640, "rafd%d", fdp->lun);
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fdp->bdevs_token = devfs_add_devswf(&afd_cdevsw, dkmakeminor(fdp->lun, 0,0),
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DV_BLK, UID_ROOT, GID_OPERATOR,
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0640, "afd%d", fdp->lun);
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#endif
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return 0;
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}
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static int32_t
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afd_sense(struct afd_softc *fdp)
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{
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int32_t error, count;
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int8_t buffer[256];
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int8_t ccb[16] = { ATAPI_MODE_SENSE, 0, ATAPI_REWRITEABLE_CAP_PAGE,
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0, 0, 0, 0, sizeof(buffer)>>8, sizeof(buffer) & 0xff,
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0, 0, 0, 0, 0, 0, 0 };
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bzero(buffer, sizeof(buffer));
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/* Get drive capabilities, some drives needs this repeated */
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for (count = 0 ; count < 5 ; count++) {
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if (!(error = atapi_queue_cmd(fdp->atp, ccb, buffer, sizeof(buffer),
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A_READ, NULL, NULL, NULL)))
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break;
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}
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#ifdef AFD_DEBUG
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atapi_dump("afd: sense", buffer, sizeof(buffer));
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#endif
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if (error)
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return error;
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bcopy(buffer, &fdp->header, sizeof(struct afd_header));
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bcopy(buffer+sizeof(struct afd_header), &fdp->cap,
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sizeof(struct afd_cappage));
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if (fdp->cap.page_code != ATAPI_REWRITEABLE_CAP_PAGE)
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return 1;
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fdp->cap.cylinders = ntohs(fdp->cap.cylinders);
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fdp->cap.sector_size = ntohs(fdp->cap.sector_size);
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return 0;
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}
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static void
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afd_describe(struct afd_softc *fdp)
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{
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int8_t model_buf[40+1];
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int8_t revision_buf[8+1];
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bpack(fdp->atp->atapi_parm->model, model_buf, sizeof(model_buf));
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bpack(fdp->atp->atapi_parm->revision, revision_buf, sizeof(revision_buf));
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printf("afd%d: <%s/%s> rewriteable drive at ata%d as %s\n",
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fdp->lun, model_buf, revision_buf,
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fdp->atp->controller->lun,
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(fdp->atp->unit == ATA_MASTER) ? "master" : "slave ");
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printf("afd%d: %luMB (%u sectors), %u cyls, %u heads, %u S/T, %u B/S\n",
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afdnlun,
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(fdp->cap.cylinders * fdp->cap.heads * fdp->cap.sectors) /
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((1024L * 1024L) / fdp->cap.sector_size),
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fdp->cap.cylinders * fdp->cap.heads * fdp->cap.sectors,
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fdp->cap.cylinders, fdp->cap.heads, fdp->cap.sectors,
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fdp->cap.sector_size);
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printf("afd%d: ", fdp->lun);
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switch (fdp->header.medium_type) {
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default: printf("Unknown media (0x%x)", fdp->header.medium_type);
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}
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if (fdp->header.wp) printf(", writeprotected");
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printf("\n");
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}
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static int
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afdopen(dev_t dev, int32_t flags, int32_t fmt, struct proc *p)
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{
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struct afd_softc *fdp;
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struct disklabel label;
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int32_t lun = UNIT(dev);
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if (lun >= afdnlun || !(fdp = afdtab[lun]))
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return ENXIO;
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fdp->flags &= ~F_MEDIA_CHANGED;
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afd_lock_device(fdp, 1);
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if (afd_sense(fdp))
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printf("afd%d: sense media type failed\n", fdp->lun);
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/* build disklabel and initilize slice tables */
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bzero(&label, sizeof label);
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label.d_secsize = fdp->cap.sector_size;
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label.d_nsectors = fdp->cap.sectors;
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label.d_ntracks = fdp->cap.heads;
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label.d_ncylinders = fdp->cap.cylinders;
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label.d_secpercyl = fdp->cap.heads * fdp->cap.sectors;
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label.d_secperunit = fdp->cap.heads * fdp->cap.sectors * fdp->cap.cylinders;
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/* Initialize slice tables. */
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return dsopen("afd", dev, fmt, 0, &fdp->slices, &label, afd_strategy,
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(ds_setgeom_t *)NULL, &afd_cdevsw);
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}
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static int
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afdclose(dev_t dev, int32_t flags, int32_t fmt, struct proc *p)
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{
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int32_t lun = UNIT(dev);
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struct afd_softc *fdp;
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if (lun >= afdnlun || !(fdp = afdtab[lun]))
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return ENXIO;
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dsclose(dev, fmt, fdp->slices);
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if(!dsisopen(fdp->slices))
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afd_lock_device(fdp, 0);
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return 0;
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}
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static int
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afdioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p)
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{
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int32_t lun = UNIT(dev);
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int32_t error = 0;
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struct afd_softc *fdp;
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if (lun >= afdnlun || !(fdp = afdtab[lun]))
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return ENXIO;
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error = dsioctl("sd", dev, cmd, addr, flag, &fdp->slices,
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afd_strategy, (ds_setgeom_t *)NULL);
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if (error != ENOIOCTL)
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return error;
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switch (cmd) {
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case CDIOCEJECT:
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if ((fdp->flags & F_OPEN) && fdp->refcnt)
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return EBUSY;
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return afd_eject(fdp, 0);
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case CDIOCCLOSE:
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if ((fdp->flags & F_OPEN) && fdp->refcnt)
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return 0;
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return afd_eject(fdp, 1);
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default:
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return ENOTTY;
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}
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return error;
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}
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static void
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afdstrategy(struct buf *bp)
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{
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int32_t lun = UNIT(bp->b_dev);
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struct afd_softc *fdp = afdtab[lun];
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int32_t x;
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if (bp->b_bcount == 0) {
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bp->b_resid = 0;
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biodone(bp);
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return;
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}
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if (dscheck(bp, fdp->slices) <= 0) {
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biodone(bp);
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return;
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}
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x = splbio();
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bufq_insert_tail(&fdp->buf_queue, bp);
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afd_start(fdp);
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splx(x);
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}
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static void
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afd_strategy(struct buf *bp)
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{
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afdstrategy(bp);
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}
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static void
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afd_start(struct afd_softc *fdp)
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{
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struct buf *bp = bufq_first(&fdp->buf_queue);
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u_int32_t lba, count;
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int8_t ccb[16];
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if (!bp)
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return;
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bzero(ccb, sizeof(ccb));
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bufq_remove(&fdp->buf_queue, bp);
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/* Should reject all queued entries if media have changed. */
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if (fdp->flags & F_MEDIA_CHANGED) {
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bp->b_error = EIO;
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bp->b_flags |= B_ERROR;
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biodone(bp);
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return;
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}
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lba = bp->b_blkno / (fdp->cap.sector_size / DEV_BSIZE);
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count = (bp->b_bcount + (fdp->cap.sector_size - 1)) / fdp->cap.sector_size;
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if (count > 64) /* only needed for ZIP drives SOS */
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count = 64;
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if (bp->b_flags & B_READ)
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ccb[0] = ATAPI_READ_BIG;
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else
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ccb[0] = ATAPI_WRITE_BIG;
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ccb[1] = 0;
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ccb[2] = lba>>24;
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ccb[3] = lba>>16;
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ccb[4] = lba>>8;
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ccb[5] = lba;
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ccb[7] = count>>8;
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ccb[8] = count;
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devstat_start_transaction(&fdp->stats);
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atapi_queue_cmd(fdp->atp, ccb, bp->b_data, count*fdp->cap.sector_size,
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(bp->b_flags & B_READ) ? A_READ : 0, afd_done, fdp, bp);
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}
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static void
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afd_done(struct atapi_request *request)
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{
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struct buf *bp = request->bp;
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struct afd_softc *fdp = request->driver;
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devstat_end_transaction(&fdp->stats, bp->b_bcount-request->bytecount,
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DEVSTAT_TAG_NONE,
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(bp->b_flags&B_READ) ? DEVSTAT_READ:DEVSTAT_WRITE);
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if (request->result) {
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printf("afd_done: ");
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atapi_error(request->device, request->result);
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bp->b_error = EIO;
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bp->b_flags |= B_ERROR;
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}
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else
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bp->b_resid = request->bytecount;
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biodone(bp);
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afd_start(fdp);
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}
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static int32_t
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afd_start_device(struct afd_softc *fdp, int32_t start)
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{
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int8_t ccb[16] = { ATAPI_START_STOP, 0, 0, 0, start,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
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return atapi_queue_cmd(fdp->atp, ccb, NULL, 0, 0, NULL, NULL, NULL);
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}
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static int32_t
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afd_lock_device(struct afd_softc *fdp, int32_t lock)
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{
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int8_t ccb[16] = { ATAPI_PREVENT_ALLOW, 0, 0, 0, lock,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
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return atapi_queue_cmd(fdp->atp, ccb, NULL, 0, 0, NULL, NULL, NULL);
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}
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static int32_t
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afd_eject(struct afd_softc *fdp, int32_t close)
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{
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int32_t error;
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error = afd_start_device(fdp, 0);
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if ((error & ATAPI_SK_MASK) &&
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((error & ATAPI_SK_MASK) == ATAPI_SK_NOT_READY ||
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(error & ATAPI_SK_MASK) == ATAPI_SK_UNIT_ATTENTION)) {
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if (!close)
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return 0;
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if ((error = afd_start_device(fdp, 3)))
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return error;
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afd_lock_device(fdp, 1);
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return 0;
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}
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if (error) {
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atapi_error(fdp->atp, error);
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return EIO;
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}
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if (close)
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return 0;
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tsleep((caddr_t) &lbolt, PRIBIO, "afdej1", 0);
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tsleep((caddr_t) &lbolt, PRIBIO, "afdej2", 0);
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afd_lock_device(fdp, 0);
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fdp->flags |= F_MEDIA_CHANGED;
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return afd_start_device(fdp, 2);
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}
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static void
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afd_drvinit(void *unused)
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{
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static int32_t afd_devsw_installed = 0;
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if (!afd_devsw_installed) {
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cdevsw_add_generic(BDEV_MAJOR, CDEV_MAJOR, &afd_cdevsw);
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afd_devsw_installed = 1;
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}
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}
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SYSINIT(afddev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, afd_drvinit, NULL)
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#endif /* NATA & NATAPIFD */
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