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diff --git a/sys/scsi/sd.c b/sys/scsi/sd.c
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+++ b/sys/scsi/sd.c
@@ -0,0 +1,1072 @@
+/*
+ * Written by Julian Elischer (julian@dialix.oz.au)
+ * for TRW Financial Systems for use under the MACH(2.5) operating system.
+ *
+ * TRW Financial Systems, in accordance with their agreement with Carnegie
+ * Mellon University, makes this software available to CMU to distribute
+ * or use in any manner that they see fit as long as this message is kept with
+ * the software. For this reason TFS also grants any other persons or
+ * organisations permission to use or modify this software.
+ *
+ * TFS supplies this software to be publicly redistributed
+ * on the understanding that TFS is not responsible for the correct
+ * functioning of this software in any circumstances.
+ *
+ * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
+ *
+ * $Id: sd.c,v 1.23 1994/04/20 07:06:57 davidg Exp $
+ */
+
+#define SPLSD splbio
+#define ESUCCESS 0
+#include <sd.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/dkbad.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/buf.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/errno.h>
+#include <sys/dkstat.h>
+#include <sys/disklabel.h>
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_disk.h>
+#include <scsi/scsiconf.h>
+#include <vm/vm.h>
+
+u_int32 sdstrats, sdqueues;
+
+#ifdef NetBSD
+#ifdef DDB
+int Debugger();
+#else /* DDB */
+#define Debugger()
+#endif /* DDB */
+#else /* NetBSD */
+#include <ddb.h>
+#if NDDB > 0
+#else /* NDDB > 0 */
+#define Debugger(s)
+#endif /* NDDB > 0 */
+#endif
+
+#define PAGESIZ 4096
+#define SECSIZE 512
+#define PDLOCATION 29
+#define BOOTRECORDSIGNATURE (0x55aa & 0x00ff)
+#define SDOUTSTANDING 2
+#define SDQSIZE 4
+#define SD_RETRIES 4
+#define MAXTRANSFER 8 /* 1 page at a time */
+
+#define MAKESDDEV(maj, unit, part) (makedev(maj,((unit<<3)+part)))
+#define UNITSHIFT 3
+#define PARTITION(z) (minor(z) & 0x07)
+#define RAW_PART 3
+#define UNIT(z) ( (minor(z) >> UNITSHIFT) )
+
+#define WHOLE_DISK(unit) ( (unit << UNITSHIFT) + RAW_PART )
+
+extern char *readdisklabel();
+errval sdgetdisklabel __P((unsigned char unit));
+errval sd_get_parms __P((int unit, int flags));
+void sdstrategy __P((struct buf *));
+void sdstart __P((u_int32));
+
+struct scsi_device sd_switch =
+{
+ NULL, /* Use default error handler */
+ sdstart, /* have a queue, served by this */
+ NULL, /* have no async handler */
+ NULL, /* Use default 'done' routine */
+ "sd",
+ 0,
+ { 0, 0 }
+};
+
+struct sd_data {
+ u_int32 flags;
+#define SDINIT 0x04 /* device has been init'd */
+#define SDHAVELABEL 0x10 /* have read the label */
+#define SDDOSPART 0x20 /* Have read the DOS partition table */
+#define SDWRITEPROT 0x40 /* Device in readonly mode (S/W) */
+ struct scsi_link *sc_link; /* contains our targ, lun etc. */
+ u_int32 ad_info; /* info about the adapter */
+ u_int32 cmdscount; /* cmds allowed outstanding by board */
+ boolean wlabel; /* label is writable */
+ struct disk_parms {
+ u_char heads; /* Number of heads */
+ u_int16 cyls; /* Number of cylinders */
+ u_char sectors; /*dubious *//* Number of sectors/track */
+ u_int16 secsiz; /* Number of bytes/sector */
+ u_int32 disksize; /* total number sectors */
+ } params;
+ struct disklabel disklabel;
+#ifdef NetBSD
+ struct cpu_disklabel cpudisklabel;
+#else
+ struct dos_partition dosparts[NDOSPART]; /* DOS view of disk */
+#endif /* NetBSD */
+ u_int32 partflags[MAXPARTITIONS]; /* per partition flags */
+#define SDOPEN 0x01
+ u_int32 openparts; /* one bit for each open partition */
+ u_int32 sd_start_of_unix; /* unix vs dos partitions */
+ struct buf buf_queue;
+ u_int32 xfer_block_wait;
+} *sd_data[NSD];
+
+static u_int32 next_sd_unit = 0;
+
+static struct scsi_xfer sx;
+
+/*
+ * The routine called by the low level scsi routine when it discovers
+ * a device suitable for this driver.
+ */
+errval
+sdattach(sc_link)
+ struct scsi_link *sc_link;
+{
+ u_int32 unit;
+ struct sd_data *sd;
+ struct disk_parms *dp;
+
+ unit = next_sd_unit++;
+ SC_DEBUG(sc_link, SDEV_DB2, ("sdattach: "));
+ /*
+ * Check we have the resources for another drive
+ */
+ if (unit >= NSD) {
+ printf("Too many scsi disks..(%d > %d) reconfigure kernel\n",
+ (unit + 1), NSD);
+ return 0;
+ }
+ if (sd_data[unit]) {
+ printf("sd%d: unit already has storage allocated!\n", unit);
+ return 0;
+ }
+ sd = sd_data[unit] = malloc(sizeof(struct sd_data), M_DEVBUF, M_NOWAIT);
+ if (!sd) {
+ printf("malloc failed in sd.c\n");
+ return (0);
+ }
+ bzero(sd, sizeof(struct sd_data));
+
+ dp = &(sd->params);
+ /*
+ * Store information needed to contact our base driver
+ */
+ sd->sc_link = sc_link;
+ sc_link->device = &sd_switch;
+ sc_link->dev_unit = unit;
+
+ if (sd->sc_link->adapter->adapter_info) {
+ sd->ad_info = ((*(sd->sc_link->adapter->adapter_info)) (sc_link->adapter_unit));
+ sd->cmdscount = sd->ad_info & AD_INF_MAX_CMDS;
+ if (sd->cmdscount > SDOUTSTANDING) {
+ sd->cmdscount = SDOUTSTANDING;
+ }
+ } else {
+ sd->ad_info = 1;
+ sd->cmdscount = 1;
+ }
+ sc_link->opennings = sd->cmdscount;
+ /*
+ * Use the subdriver to request information regarding
+ * the drive. We cannot use interrupts yet, so the
+ * request must specify this.
+ */
+ sd_get_parms(unit, SCSI_NOSLEEP | SCSI_NOMASK);
+ printf("sd%d: %dMB (%d total sec), %d cyl, %d head, %d sec, bytes/sec %d\n",
+ unit,
+ dp->disksize / ((1024L * 1024L) / dp->secsiz),
+ dp->disksize,
+ dp->cyls,
+ dp->heads,
+ dp->sectors,
+ dp->secsiz);
+ sd->flags |= SDINIT;
+ return 0;
+}
+
+/*
+ * open the device. Make sure the partition info is a up-to-date as can be.
+ */
+errval
+sdopen(dev)
+ int dev; /* XXX should be dev_t, but avoid promotion problems for now */
+{
+ errval errcode = 0;
+ u_int32 unit, part;
+ struct sd_data *sd;
+ struct scsi_link *sc_link;
+
+ unit = UNIT(dev);
+ part = PARTITION(dev);
+ sd = sd_data[unit];
+ /*
+ * Check the unit is legal
+ */
+ if (unit >= NSD) {
+ return (ENXIO);
+ }
+ /*
+ * Make sure the disk has been initialised
+ * At some point in the future, get the scsi driver
+ * to look for a new device if we are not initted
+ */
+ if ((!sd) || (!(sd->flags & SDINIT))) {
+ return (ENXIO);
+ }
+ sc_link = sd->sc_link;
+
+ SC_DEBUG(sc_link, SDEV_DB1,
+ ("sdopen: dev=0x%x (unit %d (of %d),partition %d)\n"
+ ,dev, unit, NSD, part));
+
+ /*
+ * "unit attention" errors should occur here if the
+ * drive has been restarted or the pack changed.
+ * just ingnore the result, it's a decoy instruction
+ * The error code will act on the error though
+ * and invalidate any media information we had.
+ */
+ scsi_test_unit_ready(sc_link, 0);
+
+ /*
+ * If it's been invalidated, then forget the label
+ */
+ sc_link->flags |= SDEV_OPEN; /* unit attn becomes an err now */
+ if (!(sc_link->flags & SDEV_MEDIA_LOADED)) {
+ sd->flags &= ~SDHAVELABEL;
+
+ /*
+ * If somebody still has it open, then forbid re-entry.
+ */
+ if (sd->openparts) {
+ errcode = ENXIO;
+ goto bad;
+ }
+ }
+ /*
+ * In case it is a funny one, tell it to start
+ * not needed for most hard drives (ignore failure)
+ */
+ scsi_start_unit(sc_link, SCSI_ERR_OK | SCSI_SILENT);
+
+ /*
+ * Check that it is still responding and ok.
+ */
+ if (scsi_test_unit_ready(sc_link, 0)) {
+ SC_DEBUG(sc_link, SDEV_DB3, ("device not reponding\n"));
+ errcode = ENXIO;
+ goto bad;
+ }
+ SC_DEBUG(sc_link, SDEV_DB3, ("device ok\n"));
+
+ /*
+ * Load the physical device parameters
+ */
+ sd_get_parms(unit, 0); /* sets SDEV_MEDIA_LOADED */
+ if (sd->params.secsiz != SECSIZE) { /* XXX One day... */
+ printf("sd%d: Can't deal with %d bytes logical blocks\n",
+ unit, sd->params.secsiz);
+ Debugger("sd");
+ errcode = ENXIO;
+ goto bad;
+ }
+ SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded "));
+
+ /* Lock the pack in. */
+ scsi_prevent(sc_link, PR_PREVENT, SCSI_ERR_OK | SCSI_SILENT);
+
+ /*
+ * Load the partition info if not already loaded.
+ */
+ if ((errcode = sdgetdisklabel(unit)) && (part != RAW_PART)) {
+ goto bad;
+ }
+ SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel loaded "));
+ /*
+ * Check the partition is legal
+ */
+ if (part >= MAXPARTITIONS) {
+ errcode = ENXIO;
+ goto bad;
+ }
+ SC_DEBUG(sc_link, SDEV_DB3, ("partition ok"));
+
+ /*
+ * Check that the partition exists
+ */
+ if ((sd->disklabel.d_partitions[part].p_size == 0)
+ && (part != RAW_PART)) {
+ errcode = ENXIO;
+ goto bad;
+ }
+ sd->partflags[part] |= SDOPEN;
+ sd->openparts |= (1 << part);
+ SC_DEBUG(sc_link, SDEV_DB3, ("open %d %d\n", sdstrats, sdqueues));
+ return 0;
+
+bad:
+ if (!(sd->openparts)) {
+ scsi_prevent(sc_link, PR_ALLOW, SCSI_ERR_OK | SCSI_SILENT);
+ sc_link->flags &= ~SDEV_OPEN;
+ }
+ return errcode;
+}
+
+/*
+ * close the device.. only called if we are the LAST occurence of an open
+ * device. Convenient now but usually a pain.
+ */
+errval
+sdclose(dev)
+ dev_t dev;
+{
+ unsigned char unit, part;
+ struct sd_data *sd;
+
+ unit = UNIT(dev);
+ part = PARTITION(dev);
+ sd = sd_data[unit];
+ sd->partflags[part] &= ~SDOPEN;
+ sd->openparts &= ~(1 << part);
+ scsi_prevent(sd->sc_link, PR_ALLOW, SCSI_SILENT | SCSI_ERR_OK);
+ if (!(sd->openparts))
+ sd->sc_link->flags &= ~SDEV_OPEN;
+ return 0;
+}
+
+/*
+ * trim the size of the transfer if needed, called by physio
+ * basically the smaller of our max and the scsi driver's
+ * minphys (note we have no max)
+ *
+ * Trim buffer length if buffer-size is bigger than page size
+ */
+void
+sdminphys(bp)
+ struct buf *bp;
+{
+ (*(sd_data[UNIT(bp->b_dev)]->sc_link->adapter->scsi_minphys)) (bp);
+}
+
+/*
+ * Actually translate the requested transfer into one the physical driver
+ * can understand. The transfer is described by a buf and will include
+ * only one physical transfer.
+ */
+void
+sdstrategy(bp)
+ struct buf *bp;
+{
+ struct buf *dp;
+ u_int32 opri;
+ struct sd_data *sd;
+ u_int32 unit;
+
+ sdstrats++;
+ unit = UNIT((bp->b_dev));
+ sd = sd_data[unit];
+ SC_DEBUG(sd->sc_link, SDEV_DB2, ("sdstrategy "));
+ SC_DEBUG(sd->sc_link, SDEV_DB1,
+ (" %d bytes @ blk%d\n", bp->b_bcount, bp->b_blkno));
+ sdminphys(bp);
+ /*
+ * If the device has been made invalid, error out
+ */
+ if (!(sd->sc_link->flags & SDEV_MEDIA_LOADED)) {
+ sd->flags &= ~SDHAVELABEL;
+ bp->b_error = EIO;
+ goto bad;
+ }
+ /*
+ * "soft" write protect check
+ */
+ if ((sd->flags & SDWRITEPROT) && (bp->b_flags & B_READ) == 0) {
+ bp->b_error = EROFS;
+ goto bad;
+ }
+ /*
+ * If it's a null transfer, return immediatly
+ */
+ if (bp->b_bcount == 0) {
+ goto done;
+ }
+ /*
+ * Decide which unit and partition we are talking about
+ * only raw is ok if no label
+ */
+ if (PARTITION(bp->b_dev) != RAW_PART) {
+ if (!(sd->flags & SDHAVELABEL)) {
+ bp->b_error = EIO;
+ goto bad;
+ }
+ /*
+ * do bounds checking, adjust transfer. if error, process.
+ * if end of partition, just return
+ */
+ if (bounds_check_with_label(bp, &sd->disklabel, sd->wlabel) <= 0)
+ goto done;
+ /* otherwise, process transfer request */
+ } else {
+ bp->b_pblkno = bp->b_blkno;
+ bp->b_resid = 0;
+ }
+ opri = SPLSD();
+ dp = &sd->buf_queue;
+
+ /*
+ * Use a bounce buffer if necessary
+ */
+/*
+#ifndef NOBOUNCE
+ if (sd->sc_link->flags & SDEV_BOUNCE)
+ vm_bounce_alloc(bp);
+#endif
+*/
+
+ /*
+ * Place it in the queue of disk activities for this disk
+ */
+/*
+ cldisksort(dp, bp, 64*1024);
+*/
+if ((bp->b_blkno < 0) || (bp->b_bcount > 3000000) /* || (bp->b_flags & B_WRITE) */) {
+ printf("blkno=%d bcount=%d flags=0x%x\n", bp->b_blkno, bp->b_bcount, bp->b_flags);
+ Debugger("");
+}
+ disksort(dp, bp);
+
+ /*
+ * Tell the device to get going on the transfer if it's
+ * not doing anything, otherwise just wait for completion
+ */
+ sdstart(unit);
+
+ splx(opri);
+ return /*0*/;
+bad:
+ bp->b_flags |= B_ERROR;
+done:
+
+ /*
+ * Correctly set the buf to indicate a completed xfer
+ */
+ bp->b_resid = bp->b_bcount;
+ biodone(bp);
+ return /*0*/;
+}
+
+/*
+ * sdstart looks to see if there is a buf waiting for the device
+ * and that the device is not already busy. If both are true,
+ * It dequeues the buf and creates a scsi command to perform the
+ * transfer in the buf. The transfer request will call scsi_done
+ * on completion, which will in turn call this routine again
+ * so that the next queued transfer is performed.
+ * The bufs are queued by the strategy routine (sdstrategy)
+ *
+ * This routine is also called after other non-queued requests
+ * have been made of the scsi driver, to ensure that the queue
+ * continues to be drained.
+ *
+ * must be called at the correct (highish) spl level
+ * sdstart() is called at SPLSD from sdstrategy and scsi_done
+ */
+void
+sdstart(unit)
+ u_int32 unit;
+{
+ register struct sd_data *sd = sd_data[unit];
+ register struct scsi_link *sc_link = sd->sc_link;
+ struct buf *bp = 0;
+ struct buf *dp;
+ struct scsi_rw_big cmd;
+ u_int32 blkno, nblk;
+ struct partition *p;
+
+ SC_DEBUG(sc_link, SDEV_DB2, ("sdstart "));
+ /*
+ * Check if the device has room for another command
+ */
+ while (sc_link->opennings) {
+
+ /*
+ * there is excess capacity, but a special waits
+ * It'll need the adapter as soon as we clear out of the
+ * way and let it run (user level wait).
+ */
+ if (sc_link->flags & SDEV_WAITING) {
+ return;
+ }
+ /*
+ * See if there is a buf with work for us to do..
+ */
+ dp = &sd->buf_queue;
+ if ((bp = dp->b_actf) == NULL) { /* yes, an assign */
+ return;
+ }
+ dp->b_actf = bp->b_actf;
+
+ /*
+ * If the device has become invalid, abort all the
+ * reads and writes until all files have been closed and
+ * re-openned
+ */
+ if (!(sc_link->flags & SDEV_MEDIA_LOADED)) {
+ sd->flags &= ~SDHAVELABEL;
+ goto bad;
+ }
+ /*
+ * We have a buf, now we know we are going to go through
+ * With this thing..
+ *
+ * First, translate the block to absolute
+ */
+ p = sd->disklabel.d_partitions + PARTITION(bp->b_dev);
+ blkno = bp->b_blkno + p->p_offset;
+ nblk = (bp->b_bcount + 511) >> 9;
+
+ /*
+ * Fill out the scsi command
+ */
+ bzero(&cmd, sizeof(cmd));
+ cmd.op_code = (bp->b_flags & B_READ)
+ ? READ_BIG : WRITE_BIG;
+ cmd.addr_3 = (blkno & 0xff000000UL) >> 24;
+ cmd.addr_2 = (blkno & 0xff0000) >> 16;
+ cmd.addr_1 = (blkno & 0xff00) >> 8;
+ cmd.addr_0 = blkno & 0xff;
+ cmd.length2 = (nblk & 0xff00) >> 8;
+ cmd.length1 = (nblk & 0xff);
+ /*
+ * Call the routine that chats with the adapter.
+ * Note: we cannot sleep as we may be an interrupt
+ */
+ if (scsi_scsi_cmd(sc_link,
+ (struct scsi_generic *) &cmd,
+ sizeof(cmd),
+ (u_char *) bp->b_un.b_addr,
+ bp->b_bcount,
+ SD_RETRIES,
+ 10000,
+ bp,
+ SCSI_NOSLEEP | ((bp->b_flags & B_READ) ?
+ SCSI_DATA_IN : SCSI_DATA_OUT))
+ == SUCCESSFULLY_QUEUED) {
+ sdqueues++;
+ } else {
+bad:
+ printf("sd%d: oops not queued", unit);
+ bp->b_error = EIO;
+ bp->b_flags |= B_ERROR;
+ biodone(bp);
+ }
+ }
+}
+
+/*
+ * Perform special action on behalf of the user
+ * Knows about the internals of this device
+ */
+errval
+sdioctl(dev_t dev, int cmd, caddr_t addr, int flag)
+{
+ /* struct sd_cmd_buf *args; */
+ errval error = 0;
+ unsigned char unit, part;
+ register struct sd_data *sd;
+
+ /*
+ * Find the device that the user is talking about
+ */
+ unit = UNIT(dev);
+ part = PARTITION(dev);
+ sd = sd_data[unit];
+ SC_DEBUG(sd->sc_link, SDEV_DB1, ("sdioctl (0x%x)", cmd));
+
+ /*
+ * If the device is not valid.. abandon ship
+ */
+ if (!(sd->sc_link->flags & SDEV_MEDIA_LOADED))
+ return (EIO);
+ switch (cmd) {
+
+ case DIOCSBAD:
+ error = EINVAL;
+ break;
+
+ case DIOCGDINFO:
+ *(struct disklabel *) addr = sd->disklabel;
+ break;
+
+ case DIOCGPART:
+ ((struct partinfo *) addr)->disklab = &sd->disklabel;
+ ((struct partinfo *) addr)->part =
+ &sd->disklabel.d_partitions[PARTITION(dev)];
+ break;
+
+ case DIOCSDINFO:
+ if ((flag & FWRITE) == 0)
+ error = EBADF;
+ else
+ error = setdisklabel(&sd->disklabel,
+ (struct disklabel *)addr,
+ /*(sd->flags & DKFL_BSDLABEL) ? sd->openparts : */ 0
+#ifdef NetBSD
+ ,&sd->cpudisklabel
+#else
+#if 0
+ ,sd->dosparts
+#endif
+#endif
+ );
+ if (error == 0) {
+ sd->flags |= SDHAVELABEL;
+ }
+ break;
+
+ case DIOCWLABEL:
+ sd->flags &= ~SDWRITEPROT;
+ if ((flag & FWRITE) == 0)
+ error = EBADF;
+ else
+ sd->wlabel = *(boolean *) addr;
+ break;
+
+ case DIOCWDINFO:
+ sd->flags &= ~SDWRITEPROT;
+ if ((flag & FWRITE) == 0)
+ error = EBADF;
+ else {
+ error = setdisklabel(&sd->disklabel,
+ (struct disklabel *)addr,
+ /*(sd->flags & SDHAVELABEL) ? sd->openparts : */ 0
+#ifdef NetBSD
+ ,&sd->cpudisklabel
+#else
+#if 0
+ ,sd->dosparts
+#endif
+#endif
+ );
+ if (!error) {
+ boolean wlab;
+
+ /* ok - write will succeed */
+ sd->flags |= SDHAVELABEL;
+
+ /* simulate opening partition 0 so write succeeds */
+ sd->openparts |= (1 << 0); /* XXX */
+ wlab = sd->wlabel;
+ sd->wlabel = 1;
+ error = writedisklabel(dev, sdstrategy,
+ &sd->disklabel
+#ifdef NetBSD
+ ,&sd->cpudisklabel
+#else
+#if 0
+ ,sd->dosparts
+#endif
+#endif
+ );
+ sd->wlabel = wlab;
+ }
+ }
+ break;
+
+ default:
+ if (part == RAW_PART)
+ error = scsi_do_ioctl(sd->sc_link, cmd, addr, flag);
+ else
+ error = ENOTTY;
+ break;
+ }
+ return error;
+}
+
+/*
+ * Load the label information on the named device
+ */
+errval
+sdgetdisklabel(unsigned char unit)
+{
+ char *errstring;
+ struct sd_data *sd = sd_data[unit];
+ dev_t dev;
+
+ dev = makedev(0, (unit << UNITSHIFT) + 3);
+ /*
+ * If the inflo is already loaded, use it
+ */
+ if (sd->flags & SDHAVELABEL)
+ return (ESUCCESS);
+
+ bzero(&sd->disklabel, sizeof(struct disklabel));
+ /*
+ * make partition 3 the whole disk in case of failure then get pdinfo
+ * for historical reasons, make part a same as raw part
+ */
+ sd->disklabel.d_partitions[0].p_offset = 0;
+ sd->disklabel.d_partitions[0].p_size = sd->params.disksize;
+ sd->disklabel.d_partitions[RAW_PART].p_offset = 0;
+ sd->disklabel.d_partitions[RAW_PART].p_size = sd->params.disksize;
+ sd->disklabel.d_npartitions = MAXPARTITIONS;
+ sd->disklabel.d_secsize = SECSIZE; /* as long as it's not 0 */
+ sd->disklabel.d_ntracks = sd->params.heads;
+ sd->disklabel.d_nsectors = sd->params.sectors;
+ sd->disklabel.d_ncylinders = sd->params.cyls;
+ sd->disklabel.d_secpercyl = sd->params.heads * sd->params.sectors;
+ if (sd->disklabel.d_secpercyl == 0) {
+ sd->disklabel.d_secpercyl = 100;
+ /* as long as it's not 0 - readdisklabel divides by it (?) */
+ }
+ /*
+ * Call the generic disklabel extraction routine
+ */
+ if (errstring = readdisklabel(makedev(0, (unit << UNITSHIFT) + 3),
+ sdstrategy,
+ &sd->disklabel
+#ifdef NetBSD
+ ,&sd->cpu_disklabel,
+#else
+ ,sd->dosparts, 0
+#endif
+ )) {
+ printf("sd%d: %s\n", unit, errstring);
+ return ENXIO;
+ }
+ sd->flags |= SDHAVELABEL; /* WE HAVE IT ALL NOW */
+ return ESUCCESS;
+}
+
+/*
+ * Find out from the device what it's capacity is
+ */
+u_int32
+sd_size(unit, flags)
+ int unit, flags;
+{
+ struct scsi_read_cap_data rdcap;
+ struct scsi_read_capacity scsi_cmd;
+ u_int32 size;
+
+ /*
+ * make up a scsi command and ask the scsi driver to do
+ * it for you.
+ */
+ bzero(&scsi_cmd, sizeof(scsi_cmd));
+ scsi_cmd.op_code = READ_CAPACITY;
+
+ /*
+ * If the command works, interpret the result as a 4 byte
+ * number of blocks
+ */
+ if (scsi_scsi_cmd(sd_data[unit]->sc_link,
+ (struct scsi_generic *) &scsi_cmd,
+ sizeof(scsi_cmd),
+ (u_char *) & rdcap,
+ sizeof(rdcap),
+ SD_RETRIES,
+ 2000,
+ NULL,
+ flags | SCSI_DATA_IN) != 0) {
+ printf("sd%d: could not get size\n", unit);
+ return (0);
+ } else {
+ size = rdcap.addr_0 + 1;
+ size += rdcap.addr_1 << 8;
+ size += rdcap.addr_2 << 16;
+ size += rdcap.addr_3 << 24;
+ }
+ return (size);
+}
+
+/*
+ * Tell the device to map out a defective block
+ */
+errval
+sd_reassign_blocks(unit, block)
+ int unit, block;
+{
+ struct scsi_reassign_blocks scsi_cmd;
+ struct scsi_reassign_blocks_data rbdata;
+
+ bzero(&scsi_cmd, sizeof(scsi_cmd));
+ bzero(&rbdata, sizeof(rbdata));
+ scsi_cmd.op_code = REASSIGN_BLOCKS;
+
+ rbdata.length_msb = 0;
+ rbdata.length_lsb = sizeof(rbdata.defect_descriptor[0]);
+ rbdata.defect_descriptor[0].dlbaddr_3 = ((block >> 24) & 0xff);
+ rbdata.defect_descriptor[0].dlbaddr_2 = ((block >> 16) & 0xff);
+ rbdata.defect_descriptor[0].dlbaddr_1 = ((block >> 8) & 0xff);
+ rbdata.defect_descriptor[0].dlbaddr_0 = ((block) & 0xff);
+
+ return (scsi_scsi_cmd(sd_data[unit]->sc_link,
+ (struct scsi_generic *) &scsi_cmd,
+ sizeof(scsi_cmd),
+ (u_char *) & rbdata,
+ sizeof(rbdata),
+ SD_RETRIES,
+ 5000,
+ NULL,
+ SCSI_DATA_OUT));
+}
+#define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0 )
+
+/*
+ * Get the scsi driver to send a full inquiry to the
+ * device and use the results to fill out the disk
+ * parameter structure.
+ */
+errval
+sd_get_parms(unit, flags)
+ int unit, flags;
+{
+ struct sd_data *sd = sd_data[unit];
+ struct disk_parms *disk_parms = &sd->params;
+ struct scsi_mode_sense scsi_cmd;
+ struct scsi_mode_sense_data {
+ struct scsi_mode_header header;
+ struct blk_desc blk_desc;
+ union disk_pages pages;
+ } scsi_sense;
+ u_int32 sectors;
+
+ /*
+ * First check if we have it all loaded
+ */
+ if (sd->sc_link->flags & SDEV_MEDIA_LOADED)
+ return 0;
+
+ /*
+ * do a "mode sense page 4"
+ */
+ bzero(&scsi_cmd, sizeof(scsi_cmd));
+ scsi_cmd.op_code = MODE_SENSE;
+ scsi_cmd.page = 4;
+ scsi_cmd.length = 0x20;
+ /*
+ * If the command worked, use the results to fill out
+ * the parameter structure
+ */
+ if (scsi_scsi_cmd(sd->sc_link,
+ (struct scsi_generic *) &scsi_cmd,
+ sizeof(scsi_cmd),
+ (u_char *) & scsi_sense,
+ sizeof(scsi_sense),
+ SD_RETRIES,
+ 2000,
+ NULL,
+ flags | SCSI_DATA_IN) != 0) {
+
+ printf("sd%d could not mode sense (4).", unit);
+ printf(" Using ficticious geometry\n");
+ /*
+ * use adaptec standard ficticious geometry
+ * this depends on which controller (e.g. 1542C is
+ * different. but we have to put SOMETHING here..)
+ */
+ sectors = sd_size(unit, flags);
+ disk_parms->heads = 64;
+ disk_parms->sectors = 32;
+ disk_parms->cyls = sectors / (64 * 32);
+ disk_parms->secsiz = SECSIZE;
+ disk_parms->disksize = sectors;
+ } else {
+
+ SC_DEBUG(sd->sc_link, SDEV_DB3,
+ ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
+ _3btol(&scsi_sense.pages.rigid_geometry.ncyl_2),
+ scsi_sense.pages.rigid_geometry.nheads,
+ b2tol(scsi_sense.pages.rigid_geometry.st_cyl_wp),
+ b2tol(scsi_sense.pages.rigid_geometry.st_cyl_rwc),
+ b2tol(scsi_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 !
+ */
+ disk_parms->heads = scsi_sense.pages.rigid_geometry.nheads;
+ disk_parms->cyls = _3btol(&scsi_sense.pages.rigid_geometry.ncyl_2);
+ disk_parms->secsiz = _3btol(scsi_sense.blk_desc.blklen);
+
+ sectors = sd_size(unit, flags);
+ disk_parms->disksize = sectors;
+ /* Check if none of these values are zero */
+ if(disk_parms->heads && disk_parms->cyls) {
+ sectors /= (disk_parms->heads * disk_parms->cyls);
+ }
+ else {
+ /* set it to something reasonable */
+ sectors = 32;
+ disk_parms->heads = 64;
+ disk_parms->cyls = sectors / (64 * 32);
+ }
+ disk_parms->sectors = sectors; /* dubious on SCSI *//*XXX */
+ }
+ sd->sc_link->flags |= SDEV_MEDIA_LOADED;
+ return 0;
+}
+
+int
+sdsize(dev_t dev)
+{
+ u_int32 unit = UNIT(dev), part = PARTITION(dev), val;
+ struct sd_data *sd;
+
+ if (unit >= NSD)
+ return -1;
+
+ sd = sd_data[unit];
+ if (!sd)
+ return -1;
+ if ((sd->flags & SDINIT) == 0)
+ return -1;
+ if (sd == 0 || (sd->flags & SDHAVELABEL) == 0) {
+ val = sdopen(MAKESDDEV(major(dev), unit, RAW_PART), FREAD, S_IFBLK, 0);
+ if (val != 0)
+ return -1;
+ }
+ if (sd->flags & SDWRITEPROT)
+ return -1;
+
+ return (int)sd->disklabel.d_partitions[part].p_size;
+}
+
+/*
+ * dump all of physical memory into the partition specified, starting
+ * at offset 'dumplo' into the partition.
+ */
+errval
+sddump(dev_t dev)
+{ /* dump core after a system crash */
+ register struct sd_data *sd; /* disk unit to do the IO */
+ int32 num; /* number of sectors to write */
+ u_int32 unit, part;
+ int32 blkoff, blknum, blkcnt = MAXTRANSFER;
+ int32 nblocks;
+ char *addr;
+ struct scsi_rw_big cmd;
+ extern int Maxmem;
+ static int sddoingadump = 0;
+ extern caddr_t CADDR1; /* map the page we are about to write, here */
+ extern struct pte *CMAP1;
+ struct scsi_xfer *xs = &sx;
+ errval retval;
+ int c;
+
+ addr = (char *) 0; /* starting address */
+
+ /* toss any characters present prior to dump */
+ while ((c = sgetc(1)) && (c != 0x100)); /*syscons and pccons differ */
+
+ /* size of memory to dump */
+ num = Maxmem;
+ unit = UNIT(dev); /* eventually support floppies? */
+ part = PARTITION(dev); /* file system */
+ /* check for acceptable drive number */
+ if (unit >= NSD)
+ return (ENXIO);
+
+ sd = sd_data[unit];
+ if (!sd)
+ return (ENXIO);
+ /* was it ever initialized etc. ? */
+ if (!(sd->flags & SDINIT))
+ return (ENXIO);
+ if (sd->sc_link->flags & SDEV_MEDIA_LOADED != SDEV_MEDIA_LOADED)
+ return (ENXIO);
+ if (sd->flags & SDWRITEPROT)
+ return (ENXIO);
+
+ /* Convert to disk sectors */
+ num = (u_int32) num * NBPG / sd->disklabel.d_secsize;
+
+ /* check if controller active */
+ if (sddoingadump)
+ return (EFAULT);
+
+ nblocks = sd->disklabel.d_partitions[part].p_size;
+ blkoff = sd->disklabel.d_partitions[part].p_offset;
+
+ /* check transfer bounds against partition size */
+ if ((dumplo < 0) || ((dumplo + num) > nblocks))
+ return (EINVAL);
+
+ sddoingadump = 1;
+
+ blknum = dumplo + blkoff;
+ while (num > 0) {
+ *(int *)CMAP1 =
+ PG_V | PG_KW | trunc_page(addr);
+ tlbflush();
+ /*
+ * Fill out the scsi command
+ */
+ bzero(&cmd, sizeof(cmd));
+ cmd.op_code = WRITE_BIG;
+ cmd.addr_3 = (blknum & 0xff000000) >> 24;
+ cmd.addr_2 = (blknum & 0xff0000) >> 16;
+ cmd.addr_1 = (blknum & 0xff00) >> 8;
+ cmd.addr_0 = blknum & 0xff;
+ cmd.length2 = (blkcnt & 0xff00) >> 8;
+ cmd.length1 = (blkcnt & 0xff);
+ /*
+ * Fill out the scsi_xfer structure
+ * Note: we cannot sleep as we may be an interrupt
+ * don't use scsi_scsi_cmd() as it may want
+ * to wait for an xs.
+ */
+ bzero(xs, sizeof(sx));
+ xs->flags |= SCSI_NOMASK | SCSI_NOSLEEP | INUSE;
+ xs->sc_link = sd->sc_link;
+ xs->retries = SD_RETRIES;
+ xs->timeout = 10000; /* 10000 millisecs for a disk ! */
+ xs->cmd = (struct scsi_generic *) &cmd;
+ xs->cmdlen = sizeof(cmd);
+ xs->resid = blkcnt * 512;
+ xs->error = XS_NOERROR;
+ xs->bp = 0;
+ xs->data = (u_char *) CADDR1;
+ xs->datalen = blkcnt * 512;
+
+ /*
+ * Pass all this info to the scsi driver.
+ */
+ retval = (*(sd->sc_link->adapter->scsi_cmd)) (xs);
+ switch (retval) {
+ case SUCCESSFULLY_QUEUED:
+ case HAD_ERROR:
+ return (ENXIO); /* we said not to sleep! */
+ case COMPLETE:
+ break;
+ default:
+ return (ENXIO); /* we said not to sleep! */
+ }
+
+ if ((unsigned) addr % (1024 * 1024) == 0)
+ printf("%d ", num / 2048);
+ /* update block count */
+ num -= blkcnt;
+ blknum += blkcnt;
+ (int) addr += 512 * blkcnt;
+
+ /* operator aborting dump? */
+ if ((c = sgetc(1)) && (c != 0x100))
+ return (EINTR);
+ }
+ return (0);
+}
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