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NetBSD/sys/arch/pmax/dev/rz.c
mhitch 475a5c2afd RZ25 disks seem to need a short delay after a start command; the test unit 
ready right afterward succeeds, but the getsize following that failed with
a "not ready".
1998-11-20 06:24:02 +00:00

1772 lines
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/* $NetBSD: rz.c,v 1.41 1998/11/20 06:24:02 mhitch Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Van Jacobson of Lawrence Berkeley Laboratory and Ralph Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)rz.c 8.1 (Berkeley) 7/29/93
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: rz.c,v 1.41 1998/11/20 06:24:02 mhitch Exp $");
/*
* SCSI CCS (Command Command Set) disk driver.
* NOTE: The name was changed from "sd" to "rz" for DEC naming compatibility.
* I guess I can't avoid confusion someplace.
*/
#include "opt_compat_ultrix.h"
#include "rz.h"
#include "rnd.h" /* is random device-driver configured? */
#if NRZ > 0
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/errno.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/disk.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/stat.h>
#include <sys/syslog.h>
#include <sys/device.h>
#if NRND > 0
#include <sys/rnd.h>
#endif /* NRND */
#include <ufs/ufs/dinode.h> /* XXX */
#include <ufs/ffs/fs.h> /* XXX */
#include <pmax/dev/device.h> /* 4.4bsdpmax driver definitions */
#include <pmax/dev/scsi.h>
#include <dev/scsipi/scsi_all.h> /* MI SCSI defs for mode-sense */
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsipiconf.h>
#include <dev/scsipi/scsi_disk.h> /* disk-specific sense data */
#include <dev/scsipi/scsipi_disk.h> /* disk-specific sense data */
#include <dev/scsipi/scsipi_cd.h> /* cd-specific sense data */
#include <dev/scsipi/scsipi_debug.h>
#include <sys/conf.h>
#include <machine/conf.h>
#define SDRETRIES 4
#define CDRETRIES 4
struct rz_softc;
struct scsi_mode_sense_data;
struct disk_parms;
int rzprobe __P((void /*register struct pmax_scsi_device*/ *sd));
void rzgetdefaultlabel __P((struct rz_softc *, struct disklabel *lp));
void rzstart __P((int unit));
void rzdone __P((int unit, int error, int resid, int status));
void rzgetinfo __P((dev_t dev));
int rzsize __P((dev_t dev));
/* Machinery for format and drive inquiry commands. */
int rz_command __P((struct rz_softc *sc,
struct scsipi_generic *scsipi_cmd, int cmdlen,
u_char *data_addr, int data_len,
int nretries, int timeout,
struct buf *bp, u_int flags));
static int rz_mode_sense __P((struct rz_softc *sd,
struct scsi_mode_sense_data *scsipi_sense,
int page, int pagelen, int flags));
static int rz_getsize __P((struct rz_softc *sc, int flags));
void rzgetgeom __P((struct rz_softc *, int flags));
void rz_setlabelgeom __P((struct disklabel *lp, struct disk_parms *dp));
u_long rz_cdsize __P((struct rz_softc *cd, int flags));
struct pmax_driver rzdriver = {
"rz", rzprobe,
(void (*) __P((struct ScsiCmd *cmd))) rzstart,
rzdone,
};
struct size {
u_long strtblk;
u_long nblocks;
#define RZ_END ((u_long) -1)
};
/*
* Since the SCSI standard tends to hide the disk structure, we define
* partitions in terms of DEV_BSIZE blocks. The default partition table
* (for an unlabeled disk) reserves 8K for a boot area, has an 8 meg
* root and 32 meg of swap. The rest of the space on the drive goes in
* the G partition. As usual, the C partition covers the entire disk
* (including the boot area).
*/
static struct size rzdefaultpart[MAXPARTITIONS] = {
/* Start Size Partition */
{ 0, 65536 }, /* A -- 32Mbyte root */
{ 63356, 131072 }, /* B -- 64Mbyte swap */
{ 0, RZ_END }, /* C -- entire disk */
{ 196608, 16384 }, /* D -- 8meg for var or miniroots */
{ 212992, 409600 }, /* E -- /usr */
{ 622592, 409600 }, /* F -- /home, alternate /usr */
{ 1032912, RZ_END }, /* G -- F to end of disk */
{ 196608, RZ_END } /* H -- B to end of disk */
};
extern char *
readdisklabel __P((dev_t dev, void (*strat) __P((struct buf *bp)),
struct disklabel *lp, struct cpu_disklabel *osdep));
/*
* Ultrix disklabel declarations
*/
#ifdef COMPAT_ULTRIX
#include <pmax/stand/dec_boot.h>
extern char *
compat_label __P((dev_t dev, void (*strat) __P((struct buf *bp)),
struct disklabel *lp, struct cpu_disklabel *osdep));
#endif /* COMPAT_ULTRIX */
struct rzstats {
long rzresets;
long rztransfers;
long rzpartials;
};
struct rz_softc {
struct device sc_dev; /* new config glue */
struct pmax_scsi_device *sc_sd; /* physical unit info */
pid_t sc_format_pid; /* process using "format" mode */
short sc_flags; /* see below */
short sc_type; /* drive type from INQUIRY cmd */
u_int sc_blks; /* number of blocks on device */
int sc_blksize; /* device block size in bytes */
struct disk sc_dkdev; /* generic disk device info */
#define sc_label sc_dkdev.dk_label /* XXX compat */
#define sc_openpart sc_dkdev.dk_openmask /* XXX compat */
#define sc_bopenpart sc_dkdev.dk_bopenmask /* XXX compat */
#define sc_copenpart sc_dkdev.dk_copenmask /* XXX compat */
#define sc_bshift sc_dkdev.dk_blkshift /* XXX compat */
struct rzstats sc_stats; /* statisic counts */
struct buf sc_tab; /* queue of pending operations */
struct buf sc_buf; /* buf for doing I/O */
struct buf sc_errbuf; /* buf for doing REQUEST_SENSE */
struct ScsiCmd sc_cmd; /* command for controller */
ScsiGroup1Cmd sc_rwcmd; /* SCSI cmd if not in "format" mode */
struct scsi_fmt_cdb sc_cdb; /* SCSI cmd if in "format" mode */
struct scsi_fmt_sense sc_sense; /* sense data from last cmd */
struct disk_parms {
u_char heads; /* number of heads */
u_short cyls; /* number of cylinders */
u_char sectors; /* number of sectors/track */
int blksize; /* number of bytes/sector */
u_long disksize; /* total number sectors */
} params;
u_char sc_capbuf[128]; /* buffer for SCSI_READ_CAPACITY */
#if NRND > 0
rndsource_element_t rnd_source;
#endif /* NRND */
} rz_softc[NRZ];
/* sc_flags values */
#define RZF_ALIVE 0x0001 /* drive found and ready */
#define RZF_SENSEINPROGRESS 0x0002 /* REQUEST_SENSE command in progress */
#define RZF_ALTCMD 0x0004 /* alternate command in progress */
#define RZF_HAVELABEL 0x0008 /* valid label found on disk */
#define RZF_WLABEL 0x0010 /* label is writeable */
#define RZF_WAIT 0x0020 /* waiting for sc_tab to drain */
#define RZF_REMOVEABLE 0x0040 /* disk is removable */
#define RZF_TRYSYNC 0x0080 /* try synchronous operation */
#define RZF_NOERR 0x0100 /* don't print error messages */
#define RZF_FAKEGEOM 0x02000 /* couldn't get geometry */
#ifdef DEBUG
#define RZB_ERROR 0x01
#define RZB_PARTIAL 0x02
#define RZB_PRLABEL 0x04
int rzdebug = RZB_ERROR;
#endif
#define rzunit(x) (minor(x) >> 3)
#define rzpart(x) (minor(x) & 0x7)
#define b_cylin b_resid
struct scsi_mode_sense_data {
struct scsi_mode_header header;
struct scsi_blk_desc blk_desc;
union scsi_disk_pages pages;
};
/*
* Table of scsi commands users are allowed to access via "format" mode.
* 0 means not legal.
* 1 means legal.
*/
static char legal_cmds[256] = {
/***** 0 1 2 3 4 5 6 7 8 9 A B C D E F */
/*00*/ 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*10*/ 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,
/*20*/ 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*30*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*40*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*50*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*60*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*70*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*80*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*90*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*a0*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*b0*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*c0*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*d0*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*e0*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/*f0*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
/*
* Private forward declarations
*/
static int rzready __P((register struct rz_softc *sc));
static void rzlblkstrat __P((register struct buf *bp, register int bsize));
/*
* Test to see if the unit is ready and if not, try to make it ready.
* Also, find the drive capacity.
*/
static int
rzready(sc)
register struct rz_softc *sc;
{
register int tries;
ScsiClass7Sense *sp;
/* don't print SCSI errors */
sc->sc_flags |= RZF_NOERR;
/* see if the device is ready */
for (tries = 10; ; ) {
sc->sc_cdb.len = sizeof(ScsiGroup0Cmd);
scsiGroup0Cmd(SCSI_TEST_UNIT_READY, sc->sc_rwcmd.unitNumber,
0, 0, (ScsiGroup0Cmd *)sc->sc_cdb.cdb);
sc->sc_buf.b_flags = B_BUSY | B_PHYS | B_READ;
sc->sc_buf.b_bcount = 0;
sc->sc_buf.b_un.b_addr = (caddr_t)0;
sc->sc_buf.b_actf = (struct buf *)0;
sc->sc_tab.b_actf = &sc->sc_buf;
sc->sc_cmd.cmd = sc->sc_cdb.cdb;
sc->sc_cmd.cmdlen = sc->sc_cdb.len;
sc->sc_cmd.buf = (caddr_t)0;
sc->sc_cmd.buflen = 0;
/* setup synchronous data transfers if the device supports it */
if (tries == 10 && (sc->sc_flags & RZF_TRYSYNC))
sc->sc_cmd.flags = SCSICMD_USE_SYNC;
else
sc->sc_cmd.flags = 0;
disk_busy(&sc->sc_dkdev); /* XXX */
(*sc->sc_sd->sd_cdriver->d_start)(&sc->sc_cmd);
if (!biowait(&sc->sc_buf))
break;
if (--tries < 0)
return (0);
if (!(sc->sc_sense.status & SCSI_STATUS_CHECKCOND))
goto again;
sp = (ScsiClass7Sense *)sc->sc_sense.sense;
if (sp->error7 != 0x70)
goto again;
if (sp->key == SCSI_CLASS7_UNIT_ATTN && tries != 9) {
/* drive recalibrating, give it a while */
DELAY(1000000);
continue;
}
if (sp->key == SCSI_CLASS7_NOT_READY) {
ScsiStartStopCmd *cp;
/* try to spin-up disk with start/stop command */
sc->sc_cdb.len = sizeof(ScsiGroup0Cmd);
cp = (ScsiStartStopCmd *)sc->sc_cdb.cdb;
cp->command = SCSI_START_STOP;
cp->unitNumber = sc->sc_rwcmd.unitNumber;
cp->immed = 0;
cp->loadEject = 0;
cp->start = 1;
cp->pad1 = 0;
cp->pad2 = 0;
cp->pad3 = 0;
cp->pad4 = 0;
cp->control = 0;
sc->sc_buf.b_flags = B_BUSY | B_PHYS | B_READ;
sc->sc_buf.b_bcount = 0;
sc->sc_buf.b_un.b_addr = (caddr_t)0;
sc->sc_buf.b_actf = (struct buf *)0;
sc->sc_tab.b_actf = &sc->sc_buf;
rzstart(sc->sc_cmd.unit);
if (biowait(&sc->sc_buf))
return (0);
/*
* The RZ25 seems to need a short delay here. It
* appears to take the test unit ready command OK,
* but then fails with a "not ready" when getting
* thie size.
*/
DELAY(1000);
continue;
}
again:
DELAY(1000);
}
/* print SCSI errors */
sc->sc_flags &= ~RZF_NOERR;
/* find out how big a disk this is. Punt on error. */
if (rz_getsize(sc, 0) == 0) {
return 0;
}
/*XXX perhaps move to rzprobe? */
rzgetgeom(sc, SCSI_SILENT);
return (1);
}
int
rz_getsize(sc, flags)
struct rz_softc *sc;
int flags;
{
register int i;
if (sc->sc_type == SCSI_ROM_TYPE) {
register int cdsize;
cdsize = rz_cdsize(sc, flags);
sc->params.disksize = cdsize;
sc->sc_bshift = 0;
for (i = sc->sc_blksize; i > DEV_BSIZE; i >>= 1)
++sc->sc_bshift;
sc->sc_blks <<= sc->sc_bshift;
return (cdsize);
}
sc->sc_cdb.len = sizeof(ScsiGroup1Cmd);
scsiGroup1Cmd(SCSI_READ_CAPACITY, sc->sc_rwcmd.unitNumber, 0, 0,
(ScsiGroup1Cmd *)sc->sc_cdb.cdb);
sc->sc_buf.b_flags = B_BUSY | B_PHYS | B_READ;
sc->sc_buf.b_bcount = 8; /* XXX 8 was sizeof(sc->sc_capbuf). */
sc->sc_buf.b_un.b_addr = (caddr_t)sc->sc_capbuf;
sc->sc_buf.b_actf = (struct buf *)0;
sc->sc_tab.b_actf = &sc->sc_buf;
sc->sc_flags |= RZF_ALTCMD;
rzstart(sc->sc_cmd.unit);
sc->sc_flags &= ~RZF_ALTCMD;
if (biowait(&sc->sc_buf) || sc->sc_buf.b_resid != 0) {
return (0);
}
sc->sc_blks = ((sc->sc_capbuf[0] << 24) | (sc->sc_capbuf[1] << 16) |
(sc->sc_capbuf[2] << 8) | sc->sc_capbuf[3]) + 1;
sc->sc_blksize = (sc->sc_capbuf[4] << 24) | (sc->sc_capbuf[5] << 16) |
(sc->sc_capbuf[6] << 8) | sc->sc_capbuf[7];
sc->sc_bshift = 0;
for (i = sc->sc_blksize; i > DEV_BSIZE; i >>= 1)
++sc->sc_bshift;
sc->sc_blks <<= sc->sc_bshift;
return (sc->sc_blks);
}
/*
* Test to see if device is present.
* Return true if found and initialized ok.
*/
int
rzprobe(xxxsd)
void *xxxsd;
{
register struct pmax_scsi_device *sd = xxxsd;
register struct rz_softc *sc = &rz_softc[sd->sd_unit];
register int i;
register struct disk_parms *dp = &sc->params;
ScsiInquiryData inqbuf;
if (sd->sd_unit >= NRZ)
return (0);
/* init some parameters that don't change */
sc->sc_sd = sd;
sc->sc_cmd.sd = sd;
sc->sc_cmd.unit = sd->sd_unit;
sc->sc_rwcmd.unitNumber = sd->sd_slave;
/* XXX set up the external name */
bzero(&sc->sc_dev, sizeof(sc->sc_dev)); /* XXX */
sprintf(sc->sc_dev.dv_xname, "rz%d", sd->sd_unit); /* XXX */
sc->sc_dev.dv_unit = sd->sd_unit; /* XXX */
sc->sc_dev.dv_class = DV_DISK; /* XXX */
/* Initialize the disk structure. */
bzero(&sc->sc_dkdev, sizeof(sc->sc_dkdev));
sc->sc_dkdev.dk_name = sc->sc_dev.dv_xname;
/* try to find out what type of device this is */
sc->sc_format_pid = 1; /* force use of sc_cdb */
sc->sc_flags = RZF_NOERR; /* don't print SCSI errors */
sc->sc_cdb.len = sizeof(ScsiGroup0Cmd);
scsiGroup0Cmd(SCSI_INQUIRY, sd->sd_slave, 0, sizeof(inqbuf),
(ScsiGroup0Cmd *)sc->sc_cdb.cdb);
sc->sc_buf.b_flags = B_BUSY | B_PHYS | B_READ;
sc->sc_buf.b_bcount = sizeof(inqbuf);
sc->sc_buf.b_un.b_addr = (caddr_t)&inqbuf;
sc->sc_buf.b_actf = (struct buf *)0;
sc->sc_tab.b_actf = &sc->sc_buf;
rzstart(sd->sd_unit);
/*XXX*/ /*printf("probe rz%d\n", sd->sd_unit);*/
if (biowait(&sc->sc_buf) ||
(i = sizeof(inqbuf) - sc->sc_buf.b_resid) < 5)
goto bad;
switch (inqbuf.type) {
case SCSI_DISK_TYPE: /* disk */
case SCSI_WORM_TYPE: /* WORM */
case SCSI_ROM_TYPE: /* CD-ROM */
case SCSI_OPTICAL_MEM_TYPE: /* Magneto-optical */
break;
case SCSI_TAPE_TYPE: /* tape, handled by tz driver */
goto bad;
default: /* not a disk (or tape) */
printf("rz%d: unknown media code 0x%x\n",
sd->sd_unit, inqbuf.type);
goto bad;
}
sc->sc_type = inqbuf.type;
if (inqbuf.flags & SCSI_SYNC)
sc->sc_flags |= RZF_TRYSYNC;
if (!inqbuf.rmb) {
if (!rzready(sc))
goto bad;
}
printf("rz%d at %s%d drive %d slave %d", sd->sd_unit,
sd->sd_cdriver->d_name, sd->sd_ctlr, sd->sd_drive,
sd->sd_slave);
if (inqbuf.version < 1 || i < 36)
printf(" type 0x%x, qual 0x%x, ver %d",
inqbuf.type, inqbuf.qualifier, inqbuf.version);
else {
char vid[9], pid[17], revl[5];
bcopy((caddr_t)inqbuf.vendorID, (caddr_t)vid, 8);
bcopy((caddr_t)inqbuf.productID, (caddr_t)pid, 16);
bcopy((caddr_t)inqbuf.revLevel, (caddr_t)revl, 4);
for (i = 8; --i > 0; )
if (vid[i] != ' ')
break;
vid[i+1] = 0;
for (i = 16; --i > 0; )
if (pid[i] != ' ')
break;
pid[i+1] = 0;
for (i = 4; --i > 0; )
if (revl[i] != ' ')
break;
revl[i+1] = 0;
printf(" %s %s rev %s", vid, pid, revl);
}
printf ("%s\n",
(sc->sc_flags & RZF_FAKEGEOM) ? "; using fake geometry": "");
if (dp->blksize)
printf("rz%d: %ldMB, %d cyl, %d head, %d sec, %d bytes/sect x %ld sectors\n",
sd->sd_unit,
dp->disksize / (1048576 / dp->blksize), dp->cyls,
dp->heads, dp->sectors, dp->blksize, dp->disksize);
if (!inqbuf.rmb && sc->sc_blksize != DEV_BSIZE) {
if (sc->sc_blksize < DEV_BSIZE) {
printf("rz%d: need %d byte blocks - drive ignored\n",
sd->sd_unit, DEV_BSIZE);
goto bad;
}
}
/* Attach the disk. */
disk_attach(&sc->sc_dkdev);
sc->sc_format_pid = 0;
sc->sc_flags |= RZF_ALIVE;
if (inqbuf.rmb)
sc->sc_flags |= RZF_REMOVEABLE;
sc->sc_buf.b_flags = 0;
sd->sd_devp = &sc->sc_dev; /* XXX */
TAILQ_INSERT_TAIL(&alldevs, &sc->sc_dev, dv_list); /* XXX */
#if NRND > 0
/*
* attach the device into the random source list
*/
rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, RND_TYPE_DISK);
#endif /* NRND */
return (1);
bad:
/* doesn't exist or not a CCS device */
sc->sc_format_pid = 0;
sc->sc_buf.b_flags = 0;
return (0);
}
/*
* This routine is called for partial block transfers and non-aligned
* transfers (the latter only being possible on devices with a block size
* larger than DEV_BSIZE). The operation is performed in three steps
* using a locally allocated buffer:
* 1. transfer any initial partial block
* 2. transfer full blocks
* 3. transfer any final partial block
*/
static void
rzlblkstrat(bp, bsize)
register struct buf *bp;
register int bsize;
{
register struct buf *cbp;
caddr_t cbuf;
register int bn, resid;
register caddr_t addr;
cbp = (struct buf *)malloc(sizeof(struct buf), M_DEVBUF, M_WAITOK);
cbuf = (caddr_t)malloc(bsize, M_DEVBUF, M_WAITOK);
bzero((caddr_t)cbp, sizeof(*cbp));
cbp->b_proc = curproc;
cbp->b_dev = bp->b_dev;
bn = bp->b_blkno;
resid = bp->b_bcount;
addr = bp->b_un.b_addr;
#ifdef DEBUG
if (rzdebug & RZB_PARTIAL)
printf("rzlblkstrat: bp %p flags %lx bn %x resid %x addr %p\n",
bp, bp->b_flags, bn, resid, addr);
#endif
while (resid > 0) {
register int boff = dbtob(bn) & (bsize - 1);
register int count;
if (boff || resid < bsize) {
rz_softc[rzunit(bp->b_dev)].sc_stats.rzpartials++;
count = min(resid, bsize - boff);
cbp->b_flags = B_BUSY | B_PHYS | B_READ;
cbp->b_blkno = bn - btodb(boff);
cbp->b_un.b_addr = cbuf;
cbp->b_bcount = bsize;
#ifdef DEBUG
if (rzdebug & RZB_PARTIAL)
printf(" readahead: bn %x cnt %x off %x addr %p\n",
cbp->b_blkno, count, boff, addr);
#endif
rzstrategy(cbp);
biowait(cbp);
if (cbp->b_flags & B_ERROR) {
bp->b_flags |= B_ERROR;
bp->b_error = cbp->b_error;
break;
}
if (bp->b_flags & B_READ) {
bcopy(&cbuf[boff], addr, count);
goto done;
}
bcopy(addr, &cbuf[boff], count);
#ifdef DEBUG
if (rzdebug & RZB_PARTIAL)
printf(" writeback: bn %x cnt %x off %x addr %p\n",
cbp->b_blkno, count, boff, addr);
#endif
} else {
count = resid & ~(bsize - 1);
cbp->b_blkno = bn;
cbp->b_un.b_addr = addr;
cbp->b_bcount = count;
#ifdef DEBUG
if (rzdebug & RZB_PARTIAL)
printf(" fulltrans: bn %x cnt %x addr %p\n",
cbp->b_blkno, count, addr);
#endif
}
cbp->b_flags = B_BUSY | B_PHYS | (bp->b_flags & B_READ);
rzstrategy(cbp);
biowait(cbp);
if (cbp->b_flags & B_ERROR) {
bp->b_flags |= B_ERROR;
bp->b_error = cbp->b_error;
break;
}
done:
bn += btodb(count);
resid -= count;
addr += count;
#ifdef DEBUG
if (rzdebug & RZB_PARTIAL)
printf(" done: bn %x resid %x addr %p\n",
bn, resid, addr);
#endif
}
free(cbuf, M_DEVBUF);
free(cbp, M_DEVBUF);
}
void
rzstrategy(bp)
register struct buf *bp;
{
register int unit = rzunit(bp->b_dev);
register int part = rzpart(bp->b_dev);
register struct rz_softc *sc = &rz_softc[unit];
register struct partition *pp = &sc->sc_label->d_partitions[part];
register daddr_t bn;
register long sz, s;
if (sc->sc_format_pid) {
if (sc->sc_format_pid != curproc->p_pid) {
bp->b_error = EPERM;
goto bad;
}
bp->b_cylin = 0;
} else {
bn = bp->b_blkno;
sz = howmany(bp->b_bcount, DEV_BSIZE);
if ((unsigned)bn + sz > pp->p_size) {
sz = pp->p_size - bn;
/* if exactly at end of disk, return an EOF */
if (sz == 0) {
bp->b_resid = bp->b_bcount;
goto done;
}
/* if none of it fits, error */
if (sz < 0) {
bp->b_error = EINVAL;
goto bad;
}
/* otherwise, truncate */
bp->b_bcount = dbtob(sz);
}
/* check for write to write protected label */
if (bn + pp->p_offset <= LABELSECTOR &&
#if LABELSECTOR != 0
bn + pp->p_offset + sz > LABELSECTOR &&
#endif
!(bp->b_flags & B_READ) && !(sc->sc_flags & RZF_WLABEL)) {
bp->b_error = EROFS;
goto bad;
}
/*
* Non-aligned or partial-block transfers handled specially.
*/
s = sc->sc_blksize - 1;
if ((dbtob(bn) & s) || (bp->b_bcount & s)) {
rzlblkstrat(bp, sc->sc_blksize);
goto done;
}
bp->b_cylin = (bn + pp->p_offset) >> sc->sc_bshift;
}
/* don't let disksort() see sc_errbuf */
while (sc->sc_flags & RZF_SENSEINPROGRESS)
printf("SENSE\n"); /* XXX */
s = splbio();
disksort(&sc->sc_tab, bp);
if (sc->sc_tab.b_active == 0) {
sc->sc_tab.b_active = 1;
rzstart(unit);
}
splx(s);
return;
bad:
bp->b_flags |= B_ERROR;
done:
biodone(bp);
}
void
rzstart(unit)
int unit;
{
register struct rz_softc *sc = &rz_softc[unit];
register struct buf *bp = sc->sc_tab.b_actf;
register int n;
sc->sc_cmd.buf = bp->b_un.b_addr;
sc->sc_cmd.buflen = bp->b_bcount;
if (sc->sc_format_pid ||
(sc->sc_flags & (RZF_SENSEINPROGRESS | RZF_ALTCMD))) {
sc->sc_cmd.flags = !(bp->b_flags & B_READ) ?
SCSICMD_DATA_TO_DEVICE : 0;
sc->sc_cmd.cmd = sc->sc_cdb.cdb;
sc->sc_cmd.cmdlen = sc->sc_cdb.len;
} else {
if (bp->b_flags & B_READ) {
sc->sc_cmd.flags = 0;
sc->sc_rwcmd.command = SCSI_READ_EXT;
} else {
sc->sc_cmd.flags = SCSICMD_DATA_TO_DEVICE;
sc->sc_rwcmd.command = SCSI_WRITE_EXT;
}
sc->sc_cmd.cmd = (u_char *)&sc->sc_rwcmd;
sc->sc_cmd.cmdlen = sizeof(sc->sc_rwcmd);
n = bp->b_cylin;
sc->sc_rwcmd.highAddr = n >> 24;
sc->sc_rwcmd.midHighAddr = n >> 16;
sc->sc_rwcmd.midLowAddr = n >> 8;
sc->sc_rwcmd.lowAddr = n;
n = howmany(bp->b_bcount, (sc->sc_blksize) ? sc->sc_blksize :
DEV_BSIZE);
sc->sc_rwcmd.highBlockCount = n >> 8;
sc->sc_rwcmd.lowBlockCount = n;
#ifdef DEBUG
if ((bp->b_bcount & (sc->sc_blksize - 1)) != 0)
printf("rz%d: partial block xfer -- %lx bytes\n",
unit, bp->b_bcount);
#endif
sc->sc_stats.rztransfers++;
}
/* Instrumentation. */
disk_busy(&sc->sc_dkdev);
sc->sc_dkdev.dk_seek++; /* XXX */
/* tell controller to start this command */
(*sc->sc_sd->sd_cdriver->d_start)(&sc->sc_cmd);
}
/*
* This is called by the controller driver when the command is done.
*/
void
rzdone(unit, error, resid, status)
register int unit;
int error; /* error number from errno.h */
int resid; /* amount not transfered */
int status; /* SCSI status byte */
{
register struct rz_softc *sc = &rz_softc[unit];
register struct buf *bp = sc->sc_tab.b_actf;
register struct pmax_scsi_device *sd = sc->sc_sd;
if (bp == NULL) {
printf("rz%d: bp == NULL\n", unit);
return;
}
disk_unbusy(&sc->sc_dkdev, (bp->b_bcount - resid));
#if NRND > 0
rnd_add_uint32(&sd->rnd_source, xs->bp->b_blkno);
#endif /* NRND */
if (sc->sc_flags & RZF_SENSEINPROGRESS) {
sc->sc_flags &= ~RZF_SENSEINPROGRESS;
sc->sc_tab.b_actf = bp = bp->b_actf; /* remove sc_errbuf */
if (error || (status & SCSI_STATUS_CHECKCOND)) {
#ifdef DEBUG
if (rzdebug & RZB_ERROR)
printf("rz%d: error reading sense data: error %d scsi status 0x%x\n",
unit, error, status);
#endif
/*
* We got an error during the REQUEST_SENSE,
* fill in no sense for data.
*/
sc->sc_sense.sense[0] = 0x70;
sc->sc_sense.sense[2] = SCSI_CLASS7_NO_SENSE;
} else if (!(sc->sc_flags & RZF_NOERR)) {
ScsiClass7Sense *sp;
sp = (ScsiClass7Sense *)sc->sc_sense.sense;
printf("rz%d: ", unit);
scsiPrintSense(sp, sizeof(sc->sc_sense.sense) - resid);
if (sp->error7 == 0x70 &&
sp->key == SCSI_CLASS7_RECOVERABLE) {
/* Recoverable error - clear error status */
bp->b_flags &= ~B_ERROR;
bp->b_error = 0;
}
}
} else if (error || (status & SCSI_STATUS_CHECKCOND)) {
#ifdef DEBUG
if (!(sc->sc_flags & RZF_NOERR) && (rzdebug & RZB_ERROR))
printf("rz%d: error %d scsi status 0x%x\n",
unit, error, status);
#endif
/* save error info */
sc->sc_sense.status = status;
bp->b_flags |= B_ERROR;
bp->b_error = error;
bp->b_resid = resid;
if (status & SCSI_STATUS_CHECKCOND) {
/*
* Start a REQUEST_SENSE command.
* Since we are called at interrupt time, we can't
* wait for the command to finish; that's why we use
* the sc_flags field.
*/
sc->sc_flags |= RZF_SENSEINPROGRESS;
sc->sc_cdb.len = sizeof(ScsiGroup0Cmd);
scsiGroup0Cmd(SCSI_REQUEST_SENSE, sd->sd_slave, 0,
sizeof(sc->sc_sense.sense),
(ScsiGroup0Cmd *)sc->sc_cdb.cdb);
sc->sc_errbuf.b_flags = B_BUSY | B_PHYS | B_READ;
sc->sc_errbuf.b_bcount = sizeof(sc->sc_sense.sense);
sc->sc_errbuf.b_un.b_addr = (caddr_t)sc->sc_sense.sense;
sc->sc_errbuf.b_actf = bp;
sc->sc_tab.b_actf = &sc->sc_errbuf;
rzstart(unit);
return;
}
} else {
sc->sc_sense.status = status;
bp->b_resid = resid;
}
sc->sc_tab.b_actf = bp->b_actf;
biodone(bp);
if (sc->sc_tab.b_actf)
rzstart(unit);
else {
sc->sc_tab.b_active = 0;
/* finish close protocol */
if (sc->sc_openpart == 0)
wakeup((caddr_t)&sc->sc_tab);
}
}
/*
* Read or constuct a disklabel
*/
void
rzgetinfo(dev)
dev_t dev;
{
register int unit = rzunit(dev);
register struct rz_softc *sc = &rz_softc[unit];
register struct disklabel *lp = sc->sc_label;
char *msg;
int part;
struct cpu_disklabel cd;
part = rzpart(dev);
sc->sc_flags |= RZF_HAVELABEL;
if (sc->sc_type == SCSI_ROM_TYPE) {
lp->d_type = DTYPE_SCSI;
lp->d_secsize = sc->sc_blksize;
lp->d_nsectors = 100;
lp->d_ntracks = 1;
lp->d_ncylinders = (sc->sc_blks / 100) + 1;
lp->d_secpercyl = 100;
lp->d_secperunit = sc->sc_blks;
lp->d_rpm = 300;
lp->d_interleave = 1;
lp->d_flags = D_REMOVABLE;
/* 4.4bsd code set 'a'. Also set up 'c' for disklabel. */
lp->d_npartitions = 3;
lp->d_partitions[0].p_offset = 0;
lp->d_partitions[0].p_size = sc->sc_blks;
lp->d_partitions[0].p_fstype = FS_ISO9660;
lp->d_partitions[1].p_offset = 0;
lp->d_partitions[1].p_size = 0;
lp->d_partitions[2].p_offset = 0;
lp->d_partitions[2].p_size = sc->sc_blks;
lp->d_partitions[2].p_fstype = FS_ISO9660;
lp->d_magic = DISKMAGIC;
lp->d_magic2 = DISKMAGIC;
lp->d_checksum = dkcksum(lp);
return;
}
lp->d_type = DTYPE_SCSI;
lp->d_secsize = DEV_BSIZE;
lp->d_secpercyl = 1 << sc->sc_bshift;
lp->d_npartitions = MAXPARTITIONS;
lp->d_partitions[part].p_offset = 0;
lp->d_partitions[part].p_size = sc->sc_blks;
/*
* Now try to read the disklabel
*/
msg = readdisklabel(dev, rzstrategy, lp, &cd);
/*
* If this is an installation diskimage, the label geometry
* is from a vnd(4) diskimage, not the real SCSI disk, and so
the RAW_PART info is wrong. Fake up an entry for RAW_PART.
*/
if (msg == NULL &&
strncmp(lp->d_typename, "install diskimag", 16) == 0 &&
strlen(lp->d_packname) == 0 &&
lp->d_npartitions == RAW_PART+1 &&
lp->d_partitions[0].p_offset == 0 &&
lp->d_partitions[0].p_size == 65536 &&
#if 0
lp->d_partitions[0].p_size == lp->d_partitions[RAW_PART].p_size &&
#endif
lp->d_partitions[RAW_PART].p_size != sc->sc_blks) {
printf("rz%d: WARNING: %s\n", unit,
"install diskimage, recomputing label.");
/* recompute label and rawpart size from softc params. */
rz_setlabelgeom(lp, &sc->params);
lp->d_partitions[RAW_PART].p_size = sc->sc_blks;
lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED;
lp->d_checksum = dkcksum(lp);
return;
}
if (msg == NULL)
return;
printf("rz%d: WARNING: %s\n", unit, msg);
#ifdef COMPAT_ULTRIX
/*
* No native label, try and substitute Ultrix label
*/
msg = compat_label(dev, rzstrategy, lp, &cd);
if (msg == NULL) {
printf("rz%d: WARNING: using ULTRIX partition information",
unit);
/* Ultrix labels have no geom info. Use softc params. */
rz_setlabelgeom(lp, &sc->params);
return;
}
printf("rz%d: WARNING: trying Ultrix label, %s\n", unit, msg);
#endif /* COMPAT_ULTRIX */
/*
* No label found. Concoct one from compile-time default.
*/
rzgetdefaultlabel(sc, lp);
}
int
rzopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
register int unit = rzunit(dev);
register struct rz_softc *sc = &rz_softc[unit];
register struct disklabel *lp;
register int i;
int part;
int mask;
if (unit >= NRZ || !(sc->sc_flags & RZF_ALIVE))
return (ENXIO);
/* make sure disk is ready */
if (sc->sc_flags & RZF_REMOVEABLE) {
if (!rzready(sc))
return (ENXIO);
}
/* try to read disk label and partition table information */
part = rzpart(dev);
if (!(sc->sc_flags & RZF_HAVELABEL))
rzgetinfo(dev);
lp = sc->sc_label;
if (part >= lp->d_npartitions || lp->d_partitions[part].p_size == 0)
{
printf("rzopen: ENXIO on rz%d%c unit %d part %d\n",
unit, "abcdefg"[part], unit, part);
printf("# partions %d, size of %d = %d\n",
lp->d_npartitions, part,
lp->d_partitions[part].p_size);
return (ENXIO);
}
/*
* Warn if a partition is opened that overlaps another
* already open, unless either is the `raw' partition
* (whole disk).
*/
mask = 1 << part;
if ((sc->sc_openpart & mask) == 0 && part != RAW_PART) {
register struct partition *pp;
u_long start, end;
pp = &lp->d_partitions[part];
start = pp->p_offset;
end = pp->p_offset + pp->p_size;
for (pp = lp->d_partitions, i = 0;
i < lp->d_npartitions; pp++, i++) {
if (pp->p_offset + pp->p_size <= start ||
pp->p_offset >= end || i == RAW_PART)
continue;
if (sc->sc_openpart & (1 << i))
log(LOG_WARNING,
"rz%d%c: overlaps open partition (%c)\n",
unit, part + 'a', i + 'a');
}
}
switch (mode) {
case S_IFCHR:
sc->sc_copenpart |= mask;
break;
case S_IFBLK:
sc->sc_bopenpart |= mask;
break;
}
sc->sc_openpart |= mask;
return (0);
}
int
rzclose(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
register struct rz_softc *sc = &rz_softc[rzunit(dev)];
int mask = (1 << rzpart(dev));
int s;
switch (mode) {
case S_IFCHR:
sc->sc_copenpart &= ~mask;
break;
case S_IFBLK:
sc->sc_bopenpart &= ~mask;
break;
}
sc->sc_openpart = sc->sc_copenpart | sc->sc_bopenpart;
/*
* Should wait for I/O to complete on this partition even if
* others are open, but wait for work on blkflush().
*/
if (sc->sc_openpart == 0) {
s = splbio();
while (sc->sc_tab.b_actf)
sleep((caddr_t)&sc->sc_tab, PZERO - 1);
splx(s);
#if 0
/* 4.4Lite semantics breaks disklabel -[N|W] on close */
sc->sc_flags &= ~RZF_WLABEL;
#endif
}
return (0);
}
int
rzread(dev, uio, ioflag)
dev_t dev;
struct uio *uio;
int ioflag;
{
register struct rz_softc *sc = &rz_softc[rzunit(dev)];
if (sc->sc_format_pid && sc->sc_format_pid != curproc->p_pid)
return (EPERM);
return (physio(rzstrategy, (struct buf *)0, dev,
B_READ, minphys, uio));
}
int
rzwrite(dev, uio, ioflag)
dev_t dev;
struct uio *uio;
int ioflag;
{
register struct rz_softc *sc = &rz_softc[rzunit(dev)];
if (sc->sc_type == SCSI_ROM_TYPE)
return (EROFS);
if (sc->sc_format_pid && sc->sc_format_pid != curproc->p_pid)
return (EPERM);
return (physio(rzstrategy, (struct buf *)0, dev,
B_WRITE, minphys, uio));
}
int
rzioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
register struct rz_softc *sc = &rz_softc[rzunit(dev)];
int error;
int flags;
struct cpu_disklabel cd;
switch (cmd) {
default:
return (EINVAL);
case SDIOCSFORMAT:
/* take this device into or out of "format" mode */
if (suser(p->p_ucred, &p->p_acflag))
return (EPERM);
if (*(int *)data) {
if (sc->sc_format_pid)
return (EPERM);
sc->sc_format_pid = p->p_pid;
} else
sc->sc_format_pid = 0;
return (0);
case SDIOCGFORMAT:
/* find out who has the device in format mode */
*(int *)data = sc->sc_format_pid;
return (0);
case SDIOCSCSICOMMAND:
/*
* Save what user gave us as SCSI cdb to use with next
* read or write to the char device.
*/
if (sc->sc_format_pid != p->p_pid)
return (EPERM);
if (legal_cmds[((struct scsi_fmt_cdb *)data)->cdb[0]] == 0)
return (EINVAL);
bcopy(data, (caddr_t)&sc->sc_cdb, sizeof(sc->sc_cdb));
return (0);
case SDIOCSENSE:
/*
* return the SCSI sense data saved after the last
* operation that completed with "check condition" status.
*/
bcopy((caddr_t)&sc->sc_sense, data, sizeof(sc->sc_sense));
return (0);
case DIOCGDINFO:
/* get the current disk label */
*(struct disklabel *)data = *(sc->sc_label);
return (0);
case DIOCSDINFO:
/* set the current disk label */
if (!(flag & FWRITE))
return (EBADF);
error = setdisklabel(sc->sc_label,
(struct disklabel *)data,
(sc->sc_flags & RZF_WLABEL) ? 0 :
sc->sc_openpart, &cd);
return (error);
case DIOCGPART:
/* return the disk partition data */
((struct partinfo *)data)->disklab = sc->sc_label;
((struct partinfo *)data)->part =
&sc->sc_label->d_partitions[rzpart(dev)];
return (0);
case DIOCWLABEL:
if (!(flag & FWRITE))
return (EBADF);
if (*(int *)data)
sc->sc_flags |= RZF_WLABEL;
else
sc->sc_flags &= ~RZF_WLABEL;
return (0);
case DIOCWDINFO:
/* write the disk label to disk */
if (!(flag & FWRITE))
return (EBADF);
error = setdisklabel(sc->sc_label,
(struct disklabel *)data,
(sc->sc_flags & RZF_WLABEL) ? 0 :
sc->sc_openpart,
&cd);
if (error)
return (error);
/* simulate opening partition 0 so write succeeds */
flags = sc->sc_flags;
sc->sc_flags = RZF_ALIVE | RZF_WLABEL;
error = writedisklabel(dev, rzstrategy, sc->sc_label, &cd);
sc->sc_flags = flags;
return (error);
case DIOCGDEFLABEL:
rzgetdefaultlabel(sc, (struct disklabel *)data);
return(0);
}
/*NOTREACHED*/
}
int
rzsize(dev)
dev_t dev;
{
register int unit = rzunit(dev);
register int part = rzpart(dev);
register struct rz_softc *sc = &rz_softc[unit];
int omask, size;
if (unit >= NRZ || !(sc->sc_flags & RZF_ALIVE))
return (-1);
omask = sc->sc_openpart & (1 << part);
if (omask == 0 && rzopen(dev, 0, S_IFBLK, NULL) != 0)
return (-1);
if (part >= sc->sc_label->d_npartitions ||
sc->sc_label->d_partitions[part].p_fstype != FS_SWAP)
size = -1;
else
size = sc->sc_label->d_partitions[part].p_size;
if (omask == 0 && rzclose(dev, 0, S_IFBLK, NULL) != 0)
return (-1);
return (size);
}
/*
* Find out from a CD-rom device what it's capacity is
*/
u_long
rz_cdsize(cd, flags)
struct rz_softc *cd;
int flags;
{
struct scsipi_read_cd_cap_data rdcap;
struct scsipi_read_cd_capacity scsipi_cmd;
int blksize;
u_long size;
int error;
/*
* make up a scsi command and ask the scsi driver to do
* it for you.
*/
bzero(&scsipi_cmd, sizeof(scsipi_cmd));
scsipi_cmd.opcode = READ_CD_CAPACITY;
/*
* If the command works, interpret the result as a 4 byte
* number of blocks and a blocksize
*/
error = rz_command(cd,
(struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd),
(u_char *)&rdcap, sizeof(rdcap), CDRETRIES, 20000, NULL,
flags | SCSI_DATA_IN | SCSI_SILENT);
if (error != sizeof(rdcap)) {
/*
* the drive doesn't support the READ_CD_CAPACITY command
* use a fake size
*/
#ifdef pmax
cd->sc_flags |= RZF_FAKEGEOM;
/* Must jumper CDs to 512-byte blocks to boot on pmax. */
cd->sc_blksize = 512;
cd->sc_blks = 400000 * 4;
#else
cd->sc_blksize = 2048;
cd->sc_blks = 400000;
#endif
return (cd->sc_blks);
}
blksize = _4btol(rdcap.length);
if ((blksize < 512) || ((blksize & 511) != 0))
blksize = 2048; /* some drives lie ! */
cd->sc_blksize = blksize;
size = _4btol(rdcap.addr) + 1;
if (size < 100)
size = 400000; /* ditto */
cd->sc_blks = size;
return (size);
}
/*
* Send a SCSI command to a target drive, using the 4.4bsd/pmax driver
* formatting support RZ_ALTCMD machinery.
*
* Returns byte count returned by cmd, computed as datalen - resid
* or -1 on failure.
*/
int
rz_command(sc, scsi_cmd, cmdlen, data_addr, datalen, nretries, timeout,
bp, flags)
struct rz_softc *sc;
struct scsipi_generic *scsi_cmd;
int cmdlen;
u_char *data_addr;
int datalen;
int nretries;
int timeout;
struct buf *bp;
u_int flags;
{
int retried = 0;
register int recvlen, savedflags;
/*
* Make sure the command will fit.
*/
if (cmdlen > sizeof(sc->sc_cdb)) {
printf("%s: rz_commamd: command too large (%d > %d)\n",
sc->sc_dev.dv_xname, cmdlen, sizeof(sc->sc_cdb));
return (-1);
}
/*
* Map NetBSD MI scsi command flags onto 4.4bsd SCSI (rz)
* flags.
*/
savedflags = sc->sc_flags;
if (flags & SCSI_SILENT)
sc->sc_flags |= RZF_NOERR;
/*
* Zero out the data buffer.
*/
bzero(data_addr, datalen);
again:
/* copy request into cdb */
bcopy(scsi_cmd, &sc->sc_cdb.cdb, cmdlen);
sc->sc_cdb.len = cmdlen;
/*
* Send the command to the drive and wait for it to
* complete.
*/
sc->sc_buf.b_flags = B_BUSY | B_PHYS |
(flags & SCSI_DATA_IN) ? B_READ : B_WRITE;
sc->sc_buf.b_bcount = datalen;
sc->sc_buf.b_un.b_addr = (caddr_t)data_addr;
sc->sc_buf.b_actf = (struct buf *)0;
sc->sc_tab.b_actf = &sc->sc_buf;
sc->sc_flags |= RZF_ALTCMD;
rzstart(sc->sc_cmd.unit);
sc->sc_flags &= ~RZF_ALTCMD;
DELAY(timeout);
if (biowait(&sc->sc_buf)) {
recvlen = -1;
goto done;
}
recvlen = datalen - sc->sc_buf.b_resid;
if (recvlen == 0) {
/*
* Gack, command didn't work; try again.
*/
DELAY(timeout);
if (retried++ < nretries)
goto again;
}
done:
sc->sc_flags = savedflags; /* Restore flags. */
return (recvlen);
}
/*
* mode-sense code, lifted from dev/scsipi/sd.c.
* Returns 0 on no error.
*/
static int
rz_mode_sense(sd, scsipi_sense, page, pagelen, flags)
struct rz_softc *sd;
struct scsi_mode_sense_data *scsipi_sense;
int page, pagelen, flags;
{
struct scsi_mode_sense scsipi_cmd;
register int nbytes;
/*
* Make sure the sense buffer is clean before we do
* the mode sense, so that checks for bogus values of
* 0 will work in case the mode sense fails.
*/
bzero(scsipi_sense, sizeof(*scsipi_sense));
bzero(&scsipi_cmd, sizeof(scsipi_cmd));
scsipi_cmd.opcode = SCSI_MODE_SENSE;
scsipi_cmd.page = page;
scsipi_cmd.length = 0x20; /* XXX verbatim from MI scsi sd.c */
/*
* If the command worked, use the results to fill out
* the parameter structure
*/
nbytes = rz_command(sd,
(struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd),
(u_char *)scsipi_sense,
sizeof(*scsipi_sense), /* actual size of data buffer */
SDRETRIES, 6000, NULL, flags | SCSI_DATA_IN | SCSI_SILENT);
/*
* the MI scsipi_cmd.len always sets cmd.length to 0x20 bytes.
* sizeof(*scsip_sense) is 44, causing a 12-byte residual error
* with the pmax rz.c driver.
* So ask for sizeof(*scsipi_sense) but make sure we got at least
* 0x20 bytes back instead.
*/
#if defined(RZ_DEBUG)
printf("rz_mode_sense: page %d,rz_command, nbytes %d\n", page, nbytes);
#endif
if (nbytes <= 0)
return (-1);
if (nbytes < pagelen)
return (pagelen);
/* We got at least as much as the caller wanted. Return 0 as OK. */
return(0);
}
void
rzgetgeom(sc, flags)
struct rz_softc *sc;
int flags;
{
struct disk_parms *dp = &sc->params;
struct scsi_mode_sense_data scsipi_sense;
u_long sectors;
int page;
int error;
if ((error = rz_mode_sense(sc, &scsipi_sense, page = 4,
sizeof(scsipi_sense.pages.rigid_geometry), flags)) == 0) {
SC_DEBUG(sc_link, SDEV_DB3,
("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
_3btol(scsipi_sense.pages.rigid_geometry.ncyl),
scsipi_sense.pages.rigid_geometry.nheads,
_2btol(scsipi_sense.pages.rigid_geometry.st_cyl_wp),
_2btol(scsipi_sense.pages.rigid_geometry.st_cyl_rwc),
_2btol(scsipi_sense.pages.rigid_geometry.land_zone)));
/*
* KLUDGE!! (for zone recorded disks)
* give a number of sectors so that sec * trks * cyls
* is <= disk_size
* can lead to wasted space! THINK ABOUT THIS !
*/
dp->heads = scsipi_sense.pages.rigid_geometry.nheads;
dp->cyls = _3btol(scsipi_sense.pages.rigid_geometry.ncyl);
dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
if (dp->heads == 0 || dp->cyls == 0)
goto fake_it;
if (dp->blksize == 0)
dp->blksize = 512;
/* Our caller just called rz_getsize(sc, flags). */
sectors = sc->sc_blks;
dp->disksize = sectors;
sectors /= (dp->heads * dp->cyls);
dp->sectors = sectors; /* XXX dubious on SCSI */
return ;
}
if ((error = rz_mode_sense(sc, &scsipi_sense, page = 5,
sizeof(scsipi_sense.pages.flex_geometry), flags)) == 0) {
dp->heads = scsipi_sense.pages.flex_geometry.nheads;
dp->cyls = _2btol(scsipi_sense.pages.flex_geometry.ncyl);
dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
dp->sectors = scsipi_sense.pages.flex_geometry.ph_sec_tr;
dp->disksize = dp->heads * dp->cyls * dp->sectors;
if (dp->disksize == 0)
goto fake_it;
if (dp->blksize == 0)
dp->blksize = 512;
return;
}
fake_it:
sc->sc_flags |= RZF_FAKEGEOM;
/*
* use adaptec standard fictitious geometry
* this depends on which controller (e.g. 1542C is
* different. but we have to put SOMETHING here..)
*/
sectors = /*scsipi_size(sd->sc_link, flags);*/ sc->sc_blks;
dp->heads = 64;
dp->sectors = 32;
dp->cyls = sectors / (64 * 32);
dp->blksize = 512;
dp->disksize = sectors;
return;
}
/*
* set fake or Ultrix label geometry info from softc params.
*/
void
rz_setlabelgeom(lp, dp)
struct disklabel *lp;
struct disk_parms *dp;
{
lp->d_secsize = dp->blksize;
lp->d_nsectors = dp->sectors;
lp->d_ntracks = dp->heads;
lp->d_ncylinders = dp->cyls;
lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; /* XXX */
lp->d_secperunit = dp->disksize;
}
void
rzgetdefaultlabel(sc, lp)
struct rz_softc *sc;
struct disklabel *lp;
{
register int i;
bzero(lp, sizeof(struct disklabel));
strncpy(lp->d_packname, "fictitious", 16);
lp->d_magic = DISKMAGIC;
lp->d_magic2 = DISKMAGIC;
lp->d_type = DTYPE_SCSI;
lp->d_subtype = 0;
if (sc->sc_type == SCSI_ROM_TYPE)
strncpy(lp->d_typename, "SCSI CD-ROM", 16);
else
strncpy(lp->d_typename, "SCSI disk", 16);
rz_setlabelgeom(lp, &sc->params);
lp->d_rpm = 3600;
lp->d_interleave = 1;
lp->d_flags = 0;
lp->d_npartitions = MAXPARTITIONS;
lp->d_bbsize = BBSIZE;
lp->d_sbsize = SBSIZE;
for (i = 0; i < MAXPARTITIONS; i++) {
register struct partition *pp = & lp->d_partitions[i];
pp->p_size = rzdefaultpart[i].nblocks;
pp->p_offset = rzdefaultpart[i].strtblk;
/* Change RZ_END to be end-of-disk */
if (pp->p_size == RZ_END) {
pp->p_size = sc->sc_blks - pp->p_offset;
}
/*
* Clip end of partition against end of disk.
* If both start and end beyond end of disk, set to zero.
*/
if (pp->p_offset > sc->sc_blks) {
pp->p_size = 0;
pp->p_offset = 0;
} else if ((pp->p_size + pp->p_offset) > sc->sc_blks)
pp->p_size = sc->sc_blks - pp->p_offset;
}
/* set geometry info from softc info. */
rz_setlabelgeom(lp, &sc->params);
/*XXX redundancy */
lp->d_partitions[RAW_PART].p_size = sc->sc_blks;
lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED;
lp->d_checksum = dkcksum(lp);
}
/*
* Non-interrupt driven, non-dma dump routine.
*/
int
rzdump(dev, blkno, va, size)
dev_t dev;
daddr_t blkno;
caddr_t va;
size_t size;
{
static int rzdoingadump;/* mutex */
static dev_t rzreadydev = NODEV; /* hint: device already rzready()ed */
int sectorsize; /* size of a disk sector */
int nsects; /* number of sectors in partition */
int sectoff; /* sector offset of partition */
int nwrt, totwrt; /* total number of sectors left to write */
int unit, part;
int error;
struct rz_softc *sc;
struct disklabel *lp;
extern int cold;
/* Check for recursive dump; if so, punt. */
if (rzdoingadump)
return (EFAULT);
rzdoingadump = 1;
/* Decompose unit and partition. */
unit = rzunit(dev);
part = rzpart(dev);
if (unit >= NRZ)
return (ENXIO);
sc = &rz_softc[unit];
if ((sc->sc_flags & RZF_ALIVE) == 0)
return (ENXIO);
/*
* XXX Prevent the tsleep() calls in biowait() in rzready()
* XXX or later here from performing a switch.
*/
cold = 1;
/*
* Ready drive. rzready() does geometry-sense. Cache dev_t of
* last rzready()ed device to avoid seeks to modepage.
*/
if (rzreadydev != dev) {
if (rzready(sc) == 0) {
/* Drive didn't reset. */
rzreadydev = NODEV;
return (ENXIO);
}
rzreadydev = dev;
}
/*
* Convert to disk sectors. Request must be a multiple of size.
*/
lp = sc->sc_label;
sectorsize = lp->d_secsize;
if ((size % sectorsize) != 0)
return (EFAULT);
totwrt = size / sectorsize;
blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */
nsects = lp->d_partitions[part].p_size;
sectoff = lp->d_partitions[part].p_offset;
/* Check transfer bounds against partition size. */
if ((blkno < 0) || (blkno + totwrt) > nsects)
return (EINVAL);
/* Offset block number to start of partition. */
blkno += sectoff;
while (totwrt > 0) {
nwrt = totwrt; /* XXX */
#ifndef RZ_DUMP_NOT_TRUSTED
/*
* Create the SCSI command.
*/
sc->sc_rwcmd.command = SCSI_WRITE_EXT;
sc->sc_rwcmd.highAddr = blkno >> 24;
sc->sc_rwcmd.midHighAddr = blkno >> 16;
sc->sc_rwcmd.midLowAddr = blkno >> 8;
sc->sc_rwcmd.lowAddr = blkno;
sc->sc_rwcmd.highBlockCount = nwrt >> 8;
sc->sc_rwcmd.lowBlockCount = nwrt;
/*
* ...and send it to the device.
*/
sc->sc_buf.b_flags = B_BUSY | B_PHYS | B_WRITE;
sc->sc_buf.b_bcount = nwrt * sectorsize;
sc->sc_buf.b_un.b_addr = va;
sc->sc_buf.b_actf = (struct buf *)0;
sc->sc_tab.b_actf = &sc->sc_buf;
sc->sc_cmd.flags = SCSICMD_DATA_TO_DEVICE;
sc->sc_cmd.cmd = (u_char *)&sc->sc_rwcmd;
sc->sc_cmd.cmdlen = sizeof(sc->sc_rwcmd);
sc->sc_cmd.buf = va;
sc->sc_cmd.buflen = nwrt * sectorsize;
disk_busy(&sc->sc_dkdev); /* XXX */
(*sc->sc_sd->sd_cdriver->d_start)(&sc->sc_cmd);
if ((error = biowait(&sc->sc_buf)) != 0)
return (error);
#else /* RZ_DUMP_NOT_TRUSTED */
/* Let's just talk about it first. */
printf("%s: dump addr %p, blk %d\n", sc->sc_dev.dv_xname,
va, blkno);
delay(500 * 1000); /* half a second */
#endif /* RZ_DUMP_NOT_TRUSTED */
/* update block count */
totwrt -= nwrt;
blkno += nwrt;
va += sectorsize * nwrt;
}
rzdoingadump = 0;
return (0);
}
#endif /* NRZ */
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