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An effort to make SLICE/DEVFS play with SCSI.
Apparently I didn't make my plans to make dev_t and devsw[] go away under DEVFS quite clear enough to Peter Dufault as he stitched the SCSI system together using them when he redid the configuration side of things. This made is rather an effort to remove all vestiges of dev_t and devsw[] entries from sd.c in DEVFS/SLICE mode.
This commit is contained in:
Julian Elischer
parent
78f718856a
commit
31e22aca20
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=35827
181
sys/scsi/sd.c
181
sys/scsi/sd.c
@ -14,7 +14,7 @@
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*
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* Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
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*
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* $Id: sd.c,v 1.127 1998/05/06 22:14:46 julian Exp $
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* $Id: sd.c,v 1.128 1998/05/07 02:05:21 julian Exp $
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*/
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#include "opt_bounce.h"
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@ -87,40 +87,41 @@ struct scsi_data {
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u_int32_t flags;
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#define SDINIT 0x04 /* device has been init'd */
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struct disk_parms {
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u_char heads; /* Number of heads */
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u_int16_t cyls; /* Number of cylinders */
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u_char sectors; /*dubious *//* Number of sectors/track */
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u_int16_t secsiz; /* Number of bytes/sector */
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u_int32_t disksize; /* total number sectors */
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u_char heads; /* Number of heads */
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u_int16_t cyls; /* Number of cylinders */
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u_char sectors;/*XXX*/ /* Number of sectors/track */
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u_int16_t secsiz; /* Number of bytes/sector */
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u_int32_t disksize; /* total number sectors */
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} params;
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struct diskslices *dk_slices; /* virtual drives */
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struct buf_queue_head buf_queue;
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int dkunit; /* disk stats unit number */
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struct diskslices *dk_slices; /* virtual drives */
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struct buf_queue_head buf_queue;
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int dkunit; /* disk stats unit number */
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#ifdef DEVFS
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#ifdef SLICE
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struct slice *slice;
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int mynor;
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struct slicelimits limit;
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struct scsi_link *sc_link;
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int unit;
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struct intr_config_hook ich;
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struct slice *slice;
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int mynor;
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struct slicelimits limit;
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struct scsi_link *sc_link;
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int unit;
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struct intr_config_hook ich;
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#else /* SLICE */
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void *b_devfs_token;
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void *c_devfs_token;
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void *b_devfs_token;
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void *c_devfs_token;
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#endif /* SLICE */
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void *ctl_devfs_token;
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void *ctl_devfs_token;
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#endif
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};
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#ifndef SLICE
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static int sdunit(dev_t dev) { return SDUNIT(dev); }
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static dev_t sdsetunit(dev_t dev, int unit) { return SDSETUNIT(dev, unit); }
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static errval sd_open __P((dev_t dev, int mode, int fmt, struct proc *p,
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struct scsi_link *sc_link));
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struct scsi_link *sc_link));
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static errval sd_ioctl(dev_t dev, int cmd, caddr_t addr, int flag,
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struct proc *p, struct scsi_link *sc_link);
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static errval sd_close __P((dev_t dev, int fflag, int fmt, struct proc *p,
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struct scsi_link *sc_link));
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struct proc *p, struct scsi_link *sc_link);
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static errval sd_close __P((dev_t dev, int flag, int fmt, struct proc *p,
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struct scsi_link *sc_link));
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static void sd_strategy(struct buf *bp, struct scsi_link *sc_link);
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static d_open_t sdopen;
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@ -132,17 +133,17 @@ static d_strategy_t sdstrategy;
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#define CDEV_MAJOR 13
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#define BDEV_MAJOR 4
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#ifndef SLICE
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static struct cdevsw sd_cdevsw;
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static struct bdevsw sd_bdevsw =
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{ sdopen, sdclose, sdstrategy, sdioctl, /*4*/
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sddump, sdsize, D_DISK, "sd", &sd_cdevsw, -1 };
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#else /* ! SLICE */
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static errval sdattach(struct scsi_link *sc_link);
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static sl_h_IO_req_t sdsIOreq; /* IO req downward (to device) */
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static sl_h_ioctl_t sdsioctl; /* ioctl req downward (to device) */
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static sl_h_open_t sdsopen; /* downwards travelling open */
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/*static sl_h_close_t sdsclose; */ /* downwards travelling close */
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static sl_h_close_t sdsclose; /* downwards travelling close */
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static void sds_init (void *arg);
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static sl_h_dump_t sdsdump; /* core dump req downward */
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@ -155,7 +156,7 @@ static struct slice_handler slicetype = {
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&sdsIOreq,
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&sdsioctl,
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&sdsopen,
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/*&sdsclose*/NULL,
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NULL, /* was close, now free */
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NULL, /* revoke */
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NULL, /* claim */
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NULL, /* verify */
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@ -165,6 +166,7 @@ static struct slice_handler slicetype = {
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#endif
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#ifndef SLICE
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SCSI_DEVICE_ENTRIES(sd)
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@ -188,13 +190,41 @@ static struct scsi_device sd_switch =
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sd_open,
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sd_ioctl,
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sd_close,
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#ifndef SLICE
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sd_strategy,
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#else
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};
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#else /* SLICE */
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static struct scsi_device sd_switch =
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{
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sd_sense_handler,
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sdstart, /* have a queue, served by this */
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NULL, /* have no async handler */
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NULL, /* Use default 'done' routine */
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"sd",
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0,
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{0, 0},
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0, /* Link flags */
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sdattach,
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"Direct-Access",
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NULL,
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sizeof(struct scsi_data),
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T_DIRECT,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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#endif
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};
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/* this should be called by the SYSINIT (?!) */
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void
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sdinit(void)
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{
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scsi_device_register(&sd_switch);
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}
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#endif /* SLICE */
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static struct scsi_xfer sx;
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@ -332,14 +362,32 @@ sds_init(void *arg)
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/*
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* open the device. Make sure the partition info is a up-to-date as can be.
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*/
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#ifdef SLICE
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static int
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sdsopen(void *private, int flags, int mode, struct proc *p)
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#else /* !SLICE */
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static errval
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sd_open(dev, mode, fmt, p, sc_link)
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dev_t dev;
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int mode;
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int fmt;
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struct proc *p;
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struct scsi_link *sc_link;
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sd_open(dev_t dev, int mode, int fmt, struct proc *p, struct scsi_link *sc_link)
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#endif
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{
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#ifdef SLICE
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errval errcode = 0;
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struct scsi_data *sd = private;
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struct scsi_link *sc_link = sd->sc_link;
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u_int32_t unit = sd->unit;
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if ((flags & (FREAD|FWRITE)) == 0) {
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/* Mode chenge to mode 0 (closed) */
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errcode = scsi_device_lock(sc_link);
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if (errcode) {
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return errcode; /* how can close fail? */
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}
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scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT | SCSI_ERR_OK);
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sc_link->flags &= ~SDEV_OPEN;
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scsi_device_unlock(sc_link);
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return (0);
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}
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#else /* !SLICE */
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errval errcode = 0;
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u_int32_t unit;
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struct disklabel label;
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@ -347,6 +395,7 @@ sd_open(dev, mode, fmt, p, sc_link)
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unit = SDUNIT(dev);
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sd = sc_link->sd;
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#endif /* !SLICE */
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/*
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* Make sure the disk has been initialised
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@ -357,9 +406,13 @@ sd_open(dev, mode, fmt, p, sc_link)
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return (ENXIO);
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}
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#ifdef SLICE
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SC_DEBUG(sc_link, SDEV_DB1, ("sdsopen: (unit %ld)\n", unit));
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#else /* !SLICE */
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SC_DEBUG(sc_link, SDEV_DB1,
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("sd_open: dev=0x%lx (unit %ld, partition %d)\n",
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dev, unit, PARTITION(dev)));
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#endif /* !SLICE */
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/*
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* "unit attention" errors should occur here if the
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@ -385,7 +438,7 @@ sd_open(dev, mode, fmt, p, sc_link)
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*/
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if (dsisopen(sd->dk_slices)) {
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errcode = ENXIO;
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goto bad;
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goto close;
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}
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dsgone(&sd->dk_slices);
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@ -398,7 +451,7 @@ sd_open(dev, mode, fmt, p, sc_link)
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if (scsi_test_unit_ready(sc_link, 0)) {
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SC_DEBUG(sc_link, SDEV_DB3, ("device not reponding\n"));
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errcode = ENXIO;
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goto bad;
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goto close;
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}
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SC_DEBUG(sc_link, SDEV_DB3, ("device ok\n"));
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@ -406,13 +459,14 @@ sd_open(dev, mode, fmt, p, sc_link)
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* Load the physical device parameters
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*/
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if(errcode = sd_get_parms(unit, 0)) /* sets SDEV_MEDIA_LOADED */
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goto bad;
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goto close;
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SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded "));
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/* Lock the pack in. */
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scsi_prevent(sc_link, PR_PREVENT, SCSI_ERR_OK | SCSI_SILENT);
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#ifndef SLICE
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/* Build label for whole disk. */
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bzero(&label, sizeof label);
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label.d_secsize = sd->params.secsiz;
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@ -425,12 +479,11 @@ sd_open(dev, mode, fmt, p, sc_link)
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/* XXX as long as it's not 0 - readdisklabel divides by it (?) */
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label.d_secperunit = sd->params.disksize;
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#ifndef SLICE
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/* Initialize slice tables. */
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errcode = dsopen("sd", dev, fmt, &sd->dk_slices, &label, sdstrategy1,
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(ds_setgeom_t *)NULL, &sd_bdevsw, &sd_cdevsw);
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if (errcode != 0)
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goto bad;
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goto close;
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#endif /* !SLICE */
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SC_DEBUG(sc_link, SDEV_DB3, ("Slice tables initialized "));
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@ -439,8 +492,13 @@ sd_open(dev, mode, fmt, p, sc_link)
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scsi_device_unlock(sc_link);
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return 0;
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bad:
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if (!dsisopen(sd->dk_slices)) {
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close:
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#ifndef SLICE
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if (!dsisopen(sd->dk_slices))
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#else
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if((sd->slice->flags & SLF_OPEN_STATE) == SLF_CLOSED)
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#endif
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{
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scsi_prevent(sc_link, PR_ALLOW, SCSI_ERR_OK | SCSI_SILENT);
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sc_link->flags &= ~SDEV_OPEN;
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}
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@ -448,17 +506,13 @@ bad:
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return errcode;
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}
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#ifndef SLICE
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/*
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* close the device.. only called if we are the LAST occurence of an open
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* device. Convenient now but usually a pain.
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*/
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static errval
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sd_close(dev, fflag, fmt, p, sc_link)
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dev_t dev;
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int fflag;
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int fmt;
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struct proc *p;
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struct scsi_link *sc_link;
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sd_close(dev_t dev,int mode, int fmt, struct proc *p, struct scsi_link *sc_link)
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{
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struct scsi_data *sd;
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errval errcode;
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@ -467,18 +521,15 @@ sd_close(dev, fflag, fmt, p, sc_link)
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errcode = scsi_device_lock(sc_link);
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if (errcode)
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return errcode;
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#ifndef SLICE
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dsclose(dev, fmt, sd->dk_slices);
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if (!dsisopen(sd->dk_slices)) {
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scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT | SCSI_ERR_OK);
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sc_link->flags &= ~SDEV_OPEN;
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}
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#endif /* ! SLICE */
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scsi_device_unlock(sc_link);
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return (0);
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}
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#ifndef SLICE
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/*
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* Actually translate the requested transfer into one the physical driver
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* can understand. The transfer is described by a buf and will include
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@ -1298,32 +1349,4 @@ bad:
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biodone(bp);
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return;
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}
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static int
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sdsopen(void *private, int flags, int mode, struct proc *p)
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{
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struct scsi_data *sd;
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sd = private;
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if ((flags & (FREAD|FWRITE)) == 0) {
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return(sdclose(makedev(0,sd->mynor), 0 , 0, p));
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} else {
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return(sdopen(makedev(0,sd->mynor), 0 , 0, p));
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}
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}
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#if 0
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static void
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sdsclose(void *private, int flags, int mode, struct proc *p)
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{
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struct scsi_data *sd;
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sd = private;
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sdclose(makedev(0,sd->mynor), 0 , 0, p);
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return;
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}
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#endif /* 0 */
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#endif
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