9626b608de
<sys/bio.h>. <sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall not be made a nested include according to bdes teachings on the subject of nested includes. Diskdrivers and similar stuff below specfs::strategy() should no longer need to include <sys/buf.> unless they need caching of data. Still a few bogus uses of struct buf to track down. Repocopy by: peter
433 lines
12 KiB
C
433 lines
12 KiB
C
/*-
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* Copyright (c) 1998,1999,2000 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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* $FreeBSD$
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*/
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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/malloc.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/disk.h>
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#include <sys/devicestat.h>
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#include <sys/cdio.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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/* device structures */
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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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static struct cdevsw afd_cdevsw = {
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/* open */ afdopen,
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/* close */ afdclose,
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/* read */ physread,
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/* write */ physwrite,
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/* ioctl */ afdioctl,
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/* poll */ nopoll,
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/* mmap */ nommap,
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/* strategy */ afdstrategy,
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/* name */ "afd",
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/* maj */ 118,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ D_DISK | D_TRACKCLOSE,
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/* bmaj */ 32
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};
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static struct cdevsw afddisk_cdevsw;
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/* prototypes */
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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 int32_t afd_partial_done(struct atapi_request *);
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static int32_t afd_done(struct atapi_request *);
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static int32_t afd_eject(struct afd_softc *, int32_t);
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static int32_t afd_start_stop(struct afd_softc *, int32_t);
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static int32_t afd_prevent_allow(struct afd_softc *, int32_t);
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/* internal vars */
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static u_int32_t afd_lun_map = 0;
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MALLOC_DEFINE(M_AFD, "AFD driver", "ATAPI floppy driver buffers");
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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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dev_t dev;
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fdp = malloc(sizeof(struct afd_softc), M_AFD, 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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bioq_init(&fdp->bio_queue);
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fdp->atp = atp;
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fdp->lun = ata_get_lun(&afd_lun_map);
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if (afd_sense(fdp)) {
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free(fdp, M_AFD);
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return -1;
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}
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if (!strncmp(ATA_PARAM(fdp->atp->controller, fdp->atp->unit)->model,
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"IOMEGA ZIP", 10))
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fdp->transfersize = 64;
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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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DEVSTAT_PRIORITY_WFD);
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dev = disk_create(fdp->lun, &fdp->disk, 0, &afd_cdevsw, &afddisk_cdevsw);
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dev->si_drv1 = fdp;
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dev->si_iosize_max = 252 * DEV_BSIZE;
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fdp->dev = dev;
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fdp->atp->flags |= ATAPI_F_MEDIA_CHANGED;
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fdp->atp->driver = fdp;
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if ((fdp->atp->devname = malloc(8, M_AFD, M_NOWAIT)))
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sprintf(fdp->atp->devname, "afd%d", fdp->lun);
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afd_describe(fdp);
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return 0;
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}
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void
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afddetach(struct atapi_softc *atp)
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{
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struct afd_softc *fdp = atp->driver;
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disk_invalidate(&fdp->disk);
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disk_destroy(fdp->dev);
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devstat_remove_entry(&fdp->stats);
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free(fdp->atp->devname, M_AFD);
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ata_free_lun(&afd_lun_map, fdp->lun);
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free(fdp, M_AFD);
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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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int8_t buffer[256];
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int8_t ccb[16] = { ATAPI_MODE_SENSE_BIG, 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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int32_t count, error = 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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ATPR_F_READ, 30, NULL, NULL)))
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break;
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}
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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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fdp->cap.transfer_rate = ntohs(fdp->cap.transfer_rate);
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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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if (bootverbose) {
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printf("afd%d: <%.40s/%.8s> rewriteable drive at ata%d as %s\n",
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fdp->lun, ATA_PARAM(fdp->atp->controller, fdp->atp->unit)->model,
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ATA_PARAM(fdp->atp->controller, fdp->atp->unit)->revision,
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device_get_unit(fdp->atp->controller->dev),
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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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fdp->lun,
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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: %dKB/s,", fdp->lun, fdp->cap.transfer_rate/8);
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if (fdp->transfersize)
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printf(" transfer limit %d blks,", fdp->transfersize);
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printf(" %s\n", ata_mode2str(fdp->atp->controller->mode[
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ATA_DEV(fdp->atp->unit)]));
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printf("afd%d: Medium: ", fdp->lun);
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switch (fdp->header.medium_type) {
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case MFD_2DD:
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printf("720KB DD disk"); break;
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case MFD_HD_12:
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printf("1.2MB HD disk"); break;
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case MFD_HD_144:
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printf("1.44MB HD disk"); break;
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case MFD_UHD:
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printf("120MB UHD disk"); break;
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default:
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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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else {
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printf("afd%d: %luMB <%.40s> [%d/%d/%d] at ata%d-%s using %s\n",
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fdp->lun, (fdp->cap.cylinders*fdp->cap.heads*fdp->cap.sectors) /
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((1024L * 1024L) / fdp->cap.sector_size),
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ATA_PARAM(fdp->atp->controller, fdp->atp->unit)->model,
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fdp->cap.cylinders, fdp->cap.heads, fdp->cap.sectors,
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device_get_unit(fdp->atp->controller->dev),
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(fdp->atp->unit == ATA_MASTER) ? "master" : "slave",
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ata_mode2str(fdp->atp->controller->mode[ATA_DEV(fdp->atp->unit)])
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);
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}
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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 = dev->si_drv1;
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struct disklabel *label = &fdp->disk.d_label;
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atapi_test_ready(fdp->atp);
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if (count_dev(dev) == 1)
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afd_prevent_allow(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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fdp->atp->flags &= ~ATAPI_F_MEDIA_CHANGED;
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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.sectors * fdp->cap.heads;
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label->d_secperunit = label->d_secpercyl * fdp->cap.cylinders;
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return 0;
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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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struct afd_softc *fdp = dev->si_drv1;
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if (count_dev(dev) == 1)
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afd_prevent_allow(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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struct afd_softc *fdp = dev->si_drv1;
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switch (cmd) {
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case CDIOCEJECT:
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if (count_dev(dev) > 1)
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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 (count_dev(dev) > 1)
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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 ENOIOCTL;
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}
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}
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static void
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afdstrategy(struct bio *bp)
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{
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struct afd_softc *fdp = bp->bio_dev->si_drv1;
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int32_t s;
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/* if it's a null transfer, return immediatly. */
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if (bp->bio_bcount == 0) {
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bp->bio_resid = 0;
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biodone(bp);
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return;
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}
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s = splbio();
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bioqdisksort(&fdp->bio_queue, bp);
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ata_start(fdp->atp->controller);
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splx(s);
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}
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void
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afd_start(struct atapi_softc *atp)
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{
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struct afd_softc *fdp = atp->driver;
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struct bio *bp = bioq_first(&fdp->bio_queue);
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u_int32_t lba, count;
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int8_t ccb[16];
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int8_t *data_ptr;
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if (!bp)
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return;
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bioq_remove(&fdp->bio_queue, bp);
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/* should reject all queued entries if media have changed. */
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if (fdp->atp->flags & ATAPI_F_MEDIA_CHANGED) {
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bp->bio_error = EIO;
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bp->bio_flags |= BIO_ERROR;
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biodone(bp);
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return;
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}
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lba = bp->bio_pblkno;
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count = bp->bio_bcount / fdp->cap.sector_size;
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data_ptr = bp->bio_data;
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bp->bio_resid = 0;
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bzero(ccb, sizeof(ccb));
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if (bp->bio_cmd == BIO_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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devstat_start_transaction(&fdp->stats);
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while (fdp->transfersize && (count > fdp->transfersize)) {
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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] = fdp->transfersize>>8;
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ccb[8] = fdp->transfersize;
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atapi_queue_cmd(fdp->atp, ccb, data_ptr,
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fdp->transfersize * fdp->cap.sector_size,
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(bp->bio_cmd == BIO_READ) ? ATPR_F_READ : 0, 30,
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afd_partial_done, bp);
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count -= fdp->transfersize;
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lba += fdp->transfersize;
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data_ptr += fdp->transfersize * fdp->cap.sector_size;
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}
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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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atapi_queue_cmd(fdp->atp, ccb, data_ptr, count * fdp->cap.sector_size,
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(bp->bio_cmd == BIO_READ) ? ATPR_F_READ : 0, 30, afd_done, bp);
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}
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static int32_t
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afd_partial_done(struct atapi_request *request)
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{
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struct bio *bp = request->driver;
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if (request->error) {
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bp->bio_error = request->error;
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bp->bio_flags |= BIO_ERROR;
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}
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bp->bio_resid += request->bytecount;
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return 0;
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}
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static int32_t
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afd_done(struct atapi_request *request)
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{
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struct bio *bp = request->driver;
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struct afd_softc *fdp = request->device->driver;
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if (request->error || (bp->bio_flags & BIO_ERROR)) {
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bp->bio_error = request->error;
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bp->bio_flags |= BIO_ERROR;
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}
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else
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bp->bio_resid += (bp->bio_bcount - request->donecount);
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devstat_end_transaction_bio(&fdp->stats, bp);
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biodone(bp);
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return 0;
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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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if ((error = afd_start_stop(fdp, 0)) == EBUSY) {
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if (!close)
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return 0;
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if ((error = afd_start_stop(fdp, 3)))
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return error;
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return afd_prevent_allow(fdp, 1);
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}
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if (error)
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return error;
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if (close)
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return 0;
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if ((error = afd_prevent_allow(fdp, 0)))
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return error;
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fdp->atp->flags |= ATAPI_F_MEDIA_CHANGED;
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return afd_start_stop(fdp, 2);
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}
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static int32_t
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afd_start_stop(struct afd_softc *fdp, int32_t start)
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{
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int8_t ccb[16] = { ATAPI_START_STOP, 0x01, 0, 0, start,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
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int32_t error;
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error = atapi_queue_cmd(fdp->atp, ccb, NULL, 0, 0, 10, NULL, NULL);
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if (error)
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return error;
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return atapi_wait_ready(fdp->atp, 30);
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}
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static int32_t
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afd_prevent_allow(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, 0,30, NULL, NULL);
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}
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