/* * Copyright (c) 1990 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. * * 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. * * @(#)sd.c 7.8 (Berkeley) 6/9/91 * $Id: sd.c,v 1.9 1994/02/14 10:26:36 chopps Exp $ */ /* * SCSI CCS (Command Command Set) disk driver. */ #include "sd.h" #if NSD > 0 /* * Current driver can only handle 8 disk devices, so if more were * configured, redefine NSD to reduce unusable data space. */ #if NSD > 8 #undef NSD #define NSD 8 /* Can't handle more than 8 devices */ #endif #ifndef lint static char rcsid[] = "$Header: /cvsroot/src/sys/arch/amiga/dev/Attic/sd.c,v 1.9 1994/02/14 10:26:36 chopps Exp $"; #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct sd_softc; extern int sdinit (register struct amiga_device *ad); extern void sdreset (register struct sd_softc *sc, register struct amiga_device *ad); extern int sdopen (dev_t dev, int flags, int mode, struct proc *p); extern void sdstrategy (register struct buf *bp); extern void sdustart (register int unit); extern void sdstart (register int unit); extern void sdgo (register int unit); extern void sdintr (register int unit, int stat); extern int sdioctl (dev_t dev, int cmd, caddr_t data, int flag, struct proc *p); extern int sdsize (dev_t dev); extern int sddump (dev_t dev); static int sdident (struct sd_softc *sc, struct amiga_device *ad); static void sdlblkstrat (register struct buf *bp, register int bsize); static int sderror (int unit, register struct sd_softc *sc, register struct amiga_device *am, int stat); static void sdfinish (int unit, register struct sd_softc *sc, register struct buf *bp); extern void disksort(); extern int physio(); extern void TBIS(); struct driver sddriver = { (int (*)(void *))sdinit, "sd", (int (*)(int)) sdstart, (int (*)(int,...))sdgo, (int (*)(int,int)) sdintr, 0, }; #if 0 struct size { u_long strtblk; u_long endblk; int nblocks; }; struct sdinfo { u_int cylinders; /* number of driver cylinders RDB value */ u_int sectors; /* sectors per track RDB value */ u_int heads; /* number of drive heads RDB value */ u_int cylblocks; /* available number of blocks per cyl RDB value */ struct size part[8]; }; /* * 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 512K 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). */ struct sdinfo sddefaultpart = { 1024, 17408, 16384 , /* A */ 17408, 82944, 65536 , /* B */ 0, 0, 0 , /* C */ 17408, 115712, 98304 , /* D */ 115712, 218112, 102400 , /* E */ 218112, 0, 0 , /* F */ 82944, 0, 0 , /* G */ 115712, 0, 0 , /* H */ }; #endif struct sd_softc { struct amiga_device *sc_ad; struct devqueue sc_dq; int sc_format_pid; /* process using "format" mode */ short sc_flags; short sc_type; /* drive type */ short sc_punit; /* physical unit (scsi lun) */ u_short sc_bshift; /* convert device blocks to DEV_BSIZE blks */ u_int sc_blks; /* number of blocks on device */ int sc_blksize; /* device block size in bytes */ u_int sc_wpms; /* average xfer rate in 16 bit wds/sec. */ char sc_idstr[32]; /* XXX */ struct disklabel sc_label; /* drive partition table & label info */ int sc_have_label; int sc_write_label; } sd_softc[NSD]; /* sc_flags values */ #define SDF_ALIVE 0x1 #ifdef DEBUG int sddebug = 0; #define SDB_ERROR 0x01 #define SDB_PARTIAL 0x02 #define SDB_BOOTDEV 0x04 #define SDB_QUASEL 0x10 #define QUASEL #endif #ifdef QUASEL #define QPRINTF(a) if (sddebug & SDB_QUASEL) printf a #else #define QPRINTF(a) #endif struct sdstats { long sdresets; long sdtransfers; long sdpartials; } sdstats[NSD]; struct buf sdtab[NSD]; struct scsi_fmt_cdb sdcmd[NSD]; struct scsi_fmt_sense sdsense[NSD]; static struct scsi_fmt_cdb sd_read_cmd = { 10, CMD_READ_EXT }; static struct scsi_fmt_cdb sd_write_cmd = { 10, CMD_WRITE_EXT }; #define sdunit(x) (minor (x) >> 3 & 0x7) #define sdpart(x) (minor (x) & 0x7 | minor (x) >> 3 & 0x18) #define sdpunit(x) ((x) & 7) #define b_cylin b_resid #define SDRETRY 2 /* * Table of scsi commands users are allowed to access via "format" * mode. 0 means not legal. 1 means "immediate" (doesn't need dma). * -1 means needs dma and/or wait for intr. */ 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, }; static struct scsi_inquiry inqbuf; static struct scsi_fmt_cdb inq = { 6, CMD_INQUIRY, 0, 0, 0, sizeof(inqbuf), 0 }; static u_char capbuf[8]; struct scsi_fmt_cdb cap = { 10, CMD_READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; static int sdident(sc, ad) struct sd_softc *sc; struct amiga_device *ad; { int unit; register int ctlr, slave; register int i; register int tries = 10; int ismo = 0; ctlr = ad->amiga_ctlr; slave = ad->amiga_slave; unit = sc->sc_punit; (ad->amiga_cdriver->d_delay)(-1); /* * See if unit exists and is a disk then read block size & nblocks. */ while ((i = (ad->amiga_cdriver->d_tur)(ctlr, slave, unit)) != 0) { retry_TUR: if (i == -1 || --tries < 0) { if (ismo) break; /* doesn't exist or not a CCS device */ goto failed; } if (i == STS_CHECKCOND) { u_char sensebuf[128]; struct scsi_xsense *sp = (struct scsi_xsense *)sensebuf; i = (ad->amiga_cdriver->d_rqs)(ctlr, slave, unit, sensebuf, sizeof(sensebuf)); if (sp->class == 7) switch (sp->key) { /* not ready -- might be MO with no media */ case 2: if (sp->len == 12 && sensebuf[12] == 10) /* XXX */ ismo = 1; break; /* drive doing an RTZ -- give it a while */ case 6: DELAY(1000000); break; default: break; } } DELAY(1000); } /* * Find out about device */ if (i = (ad->amiga_cdriver->d_immcmd)(ctlr, slave, unit, &inq, (u_char *)&inqbuf, sizeof(inqbuf), B_READ)) { if (i == STS_CHECKCOND) goto retry_TUR; goto failed; } switch (inqbuf.type) { case 0: /* disk */ case 4: /* WORM */ case 5: /* CD-ROM */ case 7: /* Magneto-optical */ break; default: /* not a disk */ #ifdef DEBUG if (sddebug) printf ("Unit %d unknown scsi-type: %d\n", slave, inqbuf.type); #endif goto failed; } /* * Get a usable id string */ if (inqbuf.version < 1) { bcopy("UNKNOWN", &sc->sc_idstr[0], 8); bcopy("DRIVE TYPE", &sc->sc_idstr[8], 11); } else { bcopy((caddr_t)&inqbuf.vendor_id, (caddr_t)sc->sc_idstr, 28); for (i = 27; i > 23; --i) if (sc->sc_idstr[i] != ' ') break; sc->sc_idstr[i+1] = 0; for (i = 23; i > 7; --i) if (sc->sc_idstr[i] != ' ') break; sc->sc_idstr[i+1] = 0; for (i = 7; i >= 0; --i) if (sc->sc_idstr[i] != ' ') break; sc->sc_idstr[i+1] = 0; } /* for those that have drives they only turn on for use under BSD... */ (ad->amiga_cdriver->d_ssu)(ctlr, slave, unit, 1); i = (ad->amiga_cdriver->d_immcmd)(ctlr, slave, unit, &cap, (u_char *)&capbuf, sizeof(capbuf), B_READ); if (i) { if (i != STS_CHECKCOND || bcmp(&sc->sc_idstr[0], "HP", 3) || bcmp(&sc->sc_idstr[8], "S6300.650A", 11)) goto failed; /* XXX unformatted or non-existant MO media; fake it */ sc->sc_blks = 318664; sc->sc_blksize = 1024; } else { sc->sc_blks = *(u_int *)&capbuf[0]; sc->sc_blksize = *(int *)&capbuf[4]; } /* return value of read capacity is last valid block number */ sc->sc_blks++; if (inqbuf.version < 1) printf("sd%d: type 0x%x, qual 0x%x, ver %d", ad->amiga_unit, inqbuf.type, inqbuf.qual, inqbuf.version); else printf("sd%d: %s %s rev %s", ad->amiga_unit, sc->sc_idstr, &sc->sc_idstr[8], &sc->sc_idstr[24]); printf(", %d %d byte blocks\n", sc->sc_blks, sc->sc_blksize); if (sc->sc_blksize != DEV_BSIZE) { if (sc->sc_blksize < DEV_BSIZE) { printf("sd%d: need %d byte blocks - drive ignored\n", unit, DEV_BSIZE); goto failed; } for (i = sc->sc_blksize; i > DEV_BSIZE; i >>= 1) ++sc->sc_bshift; sc->sc_blks <<= sc->sc_bshift; } sc->sc_wpms = 32 * (60 * DEV_BSIZE / 2); /* XXX */ (ad->amiga_cdriver->d_delay)(0); return(inqbuf.type); failed: (ad->amiga_cdriver->d_delay)(0); return(-1); } int sdinit(ad) register struct amiga_device *ad; { register struct sd_softc *sc = &sd_softc[ad->amiga_unit]; static u_int block [DEV_BSIZE / 4]; struct RigidDiskBlock *rdb = (struct RigidDiskBlock *) block; struct PartitionBlock *pb = (struct PartitionBlock *) block; int bnum, npbnum, num_bsd_part = 0, num_part = 0, non_bsd_part = 8; struct disklabel *dl; int s; if (sc->sc_flags & SDF_ALIVE) return (0); /* this unit already configured */ /* I seem to be interrupted every leap year while in here.. Note: do this *only* if you don't need interrupt driven SCSI in here. We currently don't, as all I/O in here is done with PIO, but beware.. */ s = splbio(); sc->sc_ad = ad; sc->sc_punit = sdpunit(ad->amiga_flags); sc->sc_type = sdident(sc, ad); if (sc->sc_type < 0) { splx (s); return(0); } sc->sc_dq.dq_ctlr = ad->amiga_ctlr; sc->sc_dq.dq_unit = ad->amiga_unit; sc->sc_dq.dq_slave = ad->amiga_slave; sc->sc_dq.dq_driver = &sddriver; /* fill in as much as we can of the disklabel */ dl = &sc->sc_label; bzero (dl, sizeof (*dl)); dl->d_magic = DISKMAGIC; dl->d_type = DTYPE_SCSI; strncpy (dl->d_typename, sc->sc_idstr, sizeof (dl->d_typename) - 1); strcpy (dl->d_packname, "some pack"); /* if drive doesn't use DEV_BSIZE blocks, it's (probably) not an amiga drive, but a CDROM, for example. In that case, just set up one partition, C, containing the whole disk. */ if (sc->sc_bshift != 0) { no_rdb: dl->d_magic2 = DISKMAGIC; /* A and B come out offset=0, size=0. That way, we keep the meaning of C being the whole drive, even if there's no A and B partition */ dl->d_partitions[2].p_offset = 0; dl->d_partitions[2].p_size = sc->sc_blks; dl->d_partitions[2].p_fstype = FS_UNUSED; dl->d_npartitions = 3; /* just #2 used */ goto do_chksum; } /* read RDB and partition blocks to find out about which partitions are ok to be scribbled upon by BSD. This is quite Amiga specific. */ for (bnum = 0; bnum < RDB_LOCATION_LIMIT; bnum++) { if ((ad->amiga_cdriver->d_ttread) (ad->amiga_ctlr, ad->amiga_slave, sc->sc_punit, (char *) block, DEV_BSIZE, bnum, sc->sc_bshift)) /* read error on block */ goto no_rdb; if (rdb->rdb_ID == IDNAME_RIGIDDISK) break; } if (bnum == RDB_LOCATION_LIMIT) /* no RDB on this disk */ goto no_rdb; /* now for more serious information.. */ dl->d_secsize = rdb->rdb_BlockBytes; dl->d_nsectors = rdb->rdb_Sectors; dl->d_ntracks = rdb->rdb_Heads; dl->d_ncylinders = rdb->rdb_Cylinders; dl->d_secpercyl = rdb->rdb_CylBlocks; dl->d_secperunit = (rdb->rdb_CylBlocks * (rdb->rdb_HiCylinder - rdb->rdb_LoCylinder)); /* makes sense? */ dl->d_acylinders = rdb->rdb_Cylinders - (rdb->rdb_HiCylinder - rdb->rdb_LoCylinder); dl->d_magic2 = DISKMAGIC; /* ok, go thru the partition blocks, and check for BSD ID's */ for (npbnum = rdb->rdb_PartitionList; npbnum != 0xffffffff; ) { u_int start_block, end_block, nblocks; u_int reserved; int part, bsd_part; if ((ad->amiga_cdriver->d_ttread) (ad->amiga_ctlr, ad->amiga_slave, sc->sc_punit, (char *) block, DEV_BSIZE, npbnum, sc->sc_bshift)) break; if (pb->pb_ID != IDNAME_PARTITION) break; /* remember those values, they're destroyed when reading the first partition block */ npbnum = pb->pb_Next; start_block = pb->pb_Environment[DE_LOWCYL] * dl->d_secpercyl; reserved = pb->pb_Environment[DE_RESERVEDBLKS]; end_block = (1 + pb->pb_Environment[DE_UPPERCYL]) * dl->d_secpercyl - 1; part = -1; bsd_part = 1; switch (pb->pb_Environment[DE_DOSTYPE]) { case DOSTYPE_BSD_ROOT: if (! dl->d_partitions[0].p_size) { extern u_long bootdev; part = 0; /* Since we don't boot BSD with a standalone-kernel, but with a simple boot-loader from AmigaDOS, we fake a bootdev by assigning the just computed values of the root partition. */ /* 4: sd major 0: adaptor number ad->amiga_ctlr: controller number ad->amiga_unit: scsi-unit part: partition (A) */ if (rootdev == NODEV) bootdev = MAKEBOOTOADEV (4, 0, ad->amiga_ctlr, ad->amiga_unit, part); else bootdev = rootdev; #ifdef DEBUG if (sddebug & SDB_BOOTDEV) printf ("sdinit: setting bootdev to 0x%08x\n", bootdev); #endif } break; case DOSTYPE_BSD_SWAP: if (! dl->d_partitions[1].p_size) part = 1; break; case DOSTYPE_BSD_D: if (! dl->d_partitions[3].p_size) part = 3; break; case DOSTYPE_BSD_E: if (! dl->d_partitions[4].p_size) part = 4; break; case DOSTYPE_BSD_F: if (! dl->d_partitions[5].p_size) part = 5; break; case DOSTYPE_BSD_G: if (! dl->d_partitions[6].p_size) part = 6; break; case DOSTYPE_BSD_H: if (! dl->d_partitions[7].p_size) part = 7; break; default: /* Not a BSD partition, let's put it at a minor device number above 0x3f (== 077 == 63). */ part = non_bsd_part++; bsd_part = 0; if (part >= MAXPARTITIONS) { printf ("Ignoring partition at %d due to sd slave table " "overflow.\n", start_block); part = -1; } break; } if (part >= 0) { num_part++; if (bsd_part) { num_bsd_part++; dl->d_partitions[part].p_offset = start_block + reserved; } else dl->d_partitions[part].p_offset = start_block; dl->d_partitions[part].p_size = end_block - dl->d_partitions[part].p_offset + 1; /* for now, have this static.. XXX */ dl->d_partitions[part].p_fsize = 1024; dl->d_partitions[part].p_fstype = bsd_part ? part == 1 ? FS_SWAP : FS_BSDFFS : FS_ADOS; dl->d_partitions[part].p_frag = 8; dl->d_partitions[part].p_cpg = 0; /* XXX */ #ifdef DEBUG if (sddebug) if (bsd_part) printf ("BSD partition %c @%d - %d size %d\n", part + 'A', start_block, end_block, dl->d_partitions[part].p_size); else printf ("Non-BSD partition %d @%d - %d size %d\n", part - 8, start_block, end_block, dl->d_partitions[part].p_size); #endif } } /* This slot is obviously overloaded to mean both the actual count of partitions (that's our view) and the maximum index of the d_partition table incremented by one (this is the view presented by the dkcksum function in ufs_disksubr.c). If we want to go that way, change num_part to non_bsd_part. XXX */ #if 0 dl->d_npartitions = num_part; #else dl->d_npartitions = non_bsd_part; #endif #ifdef DEBUG if (sddebug) printf ("total %d partitions (%d BSD).\n", num_part, num_bsd_part); #endif /* C gets everything */ dl->d_partitions[2].p_size = sc->sc_blks; do_chksum: dl->d_checksum = 0; dl->d_checksum = dkcksum (dl); sc->sc_have_label = 1; sc->sc_write_label = 0; sc->sc_flags = SDF_ALIVE; splx (s); return(1); } void sdreset(sc, ad) register struct sd_softc *sc; register struct amiga_device *ad; { sdstats[ad->amiga_unit].sdresets++; } int sdopen(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { register int unit = sdunit(dev); register struct sd_softc *sc = &sd_softc[unit]; if (unit >= NSD) return(ENXIO); if ((sc->sc_flags & SDF_ALIVE) == 0 && suser(p->p_ucred, &p->p_acflag)) return(ENXIO); if (sc->sc_ad->amiga_dk >= 0) dk_wpms[sc->sc_ad->amiga_dk] = sc->sc_wpms; 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 sdlblkstrat(bp, bsize) register struct buf *bp; register int bsize; { register struct buf *cbp = (struct buf *)malloc(sizeof(struct buf), M_DEVBUF, M_WAITOK); caddr_t cbuf = (caddr_t)malloc(bsize, M_DEVBUF, M_WAITOK); register int bn, resid; register caddr_t addr; bzero((caddr_t)cbp, sizeof(*cbp)); cbp->b_proc = curproc; /* XXX */ cbp->b_dev = bp->b_dev; bn = bp->b_blkno; resid = bp->b_bcount; addr = bp->b_un.b_addr; #ifdef DEBUG if (sddebug & SDB_PARTIAL) printf("sdlblkstrat: bp %x flags %x bn %x resid %x addr %x\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) { sdstats[sdunit(bp->b_dev)].sdpartials++; 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 (sddebug & SDB_PARTIAL) printf(" readahead: bn %x cnt %x off %x addr %x\n", cbp->b_blkno, count, boff, addr); #endif sdstrategy(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 (sddebug & SDB_PARTIAL) printf(" writeback: bn %x cnt %x off %x addr %x\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 (sddebug & SDB_PARTIAL) printf(" fulltrans: bn %x cnt %x addr %x\n", cbp->b_blkno, count, addr); #endif } cbp->b_flags = B_BUSY | B_PHYS | (bp->b_flags & B_READ); sdstrategy(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 (sddebug & SDB_PARTIAL) printf(" done: bn %x resid %x addr %x\n", bn, resid, addr); #endif } free(cbuf, M_DEVBUF); free(cbp, M_DEVBUF); } void sdstrategy(bp) register struct buf *bp; { register int unit = sdunit(bp->b_dev); register struct sd_softc *sc = &sd_softc[unit]; register struct partition *pinfo = &sc->sc_label.d_partitions[sdpart(bp->b_dev)]; register struct buf *dp = &sdtab[unit]; register daddr_t bn; register int sz, s; QPRINTF (("sdstrat: unit=%d [s=%d,l=%d], [b=%d,l=%d]\n", unit, pinfo->p_offset, pinfo->p_size, bp->b_blkno, bp->b_bcount)); if (sc->sc_format_pid) { if (sc->sc_format_pid != curproc->p_pid) { /* XXX */ bp->b_error = EPERM; bp->b_flags |= B_ERROR; goto done; } bp->b_cylin = 0; } else { bn = bp->b_blkno; sz = howmany(bp->b_bcount, DEV_BSIZE); if (bn < 0 || bn + sz > pinfo->p_size) { sz = pinfo->p_size - bn; if (sz == 0) { bp->b_resid = bp->b_bcount; goto done; } if (sz < 0) { bp->b_error = EINVAL; bp->b_flags |= B_ERROR; goto done; } bp->b_bcount = dbtob(sz); } /* * Non-aligned or partial-block transfers handled specially. */ s = sc->sc_blksize - 1; if ((dbtob(bn) & s) || (bp->b_bcount & s)) { sdlblkstrat(bp, sc->sc_blksize); goto done; } bp->b_cylin = (bn + pinfo->p_offset) >> sc->sc_bshift; } s = splbio(); disksort(dp, bp); if (dp->b_active == 0) { dp->b_active = 1; sdustart(unit); } splx(s); return; done: biodone(bp); } void sdustart(unit) register int unit; { if ((sd_softc[unit].sc_ad->amiga_cdriver->d_req)(&sd_softc[unit].sc_dq)) sdstart(unit); } /* * Return: * 0 if not really an error * <0 if we should do a retry * >0 if a fatal error */ static int sderror(unit, sc, am, stat) int unit, stat; register struct sd_softc *sc; register struct amiga_device *am; { int cond = 1; sdsense[unit].status = stat; if (stat & STS_CHECKCOND) { struct scsi_xsense *sp; (am->amiga_cdriver->d_rqs)(am->amiga_ctlr, am->amiga_slave, sc->sc_punit, sdsense[unit].sense, sizeof(sdsense[unit].sense)); sp = (struct scsi_xsense *)sdsense[unit].sense; printf("sd%d: scsi sense class %d, code %d", unit, sp->class, sp->code); if (sp->class == 7) { printf(", key %d", sp->key); if (sp->valid) printf(", blk %d", *(int *)&sp->info1); switch (sp->key) { /* no sense, try again */ case 0: cond = -1; break; /* recovered error, not a problem */ case 1: cond = 0; break; } } printf("\n"); } return(cond); } static void sdfinish(unit, sc, bp) int unit; register struct sd_softc *sc; register struct buf *bp; { sdtab[unit].b_errcnt = 0; sdtab[unit].b_actf = bp->b_actf; bp->b_resid = 0; biodone(bp); (sc->sc_ad->amiga_cdriver->d_free)(&sc->sc_dq); if (sdtab[unit].b_actf) sdustart(unit); else sdtab[unit].b_active = 0; } void sdstart(unit) register int unit; { register struct sd_softc *sc = &sd_softc[unit]; register struct amiga_device *am = sc->sc_ad; /* * we have the SCSI bus -- in format mode, we may or may not need dma * so check now. */ if (sc->sc_format_pid && legal_cmds[sdcmd[unit].cdb[0]] > 0) { register struct buf *bp = sdtab[unit].b_actf; register int sts; sts = (am->amiga_cdriver->d_immcmd)(am->amiga_ctlr, am->amiga_slave, sc->sc_punit, &sdcmd[unit], bp->b_un.b_addr, bp->b_bcount, bp->b_flags & B_READ); sdsense[unit].status = sts; if (sts & 0xfe) { (void) sderror(unit, sc, am, sts); bp->b_flags |= B_ERROR; bp->b_error = EIO; } sdfinish(unit, sc, bp); } else if ((am->amiga_cdriver->d_ustart)(am->amiga_ctlr)) sdgo(unit); } void sdgo(unit) register int unit; { register struct sd_softc *sc = &sd_softc[unit]; register struct amiga_device *am = sc->sc_ad; register struct buf *bp = sdtab[unit].b_actf; register int pad; register struct scsi_fmt_cdb *cmd; /* XXX ? */ if (! bp) return; if (sc->sc_format_pid) { cmd = &sdcmd[unit]; pad = 0; } else { cmd = bp->b_flags & B_READ? &sd_read_cmd : &sd_write_cmd; *(int *)(&cmd->cdb[2]) = bp->b_cylin; pad = howmany(bp->b_bcount, sc->sc_blksize); #if 0 *(u_short *)(&cmd->cdb[7]) = pad; #else /* Kludge for GVP 3001 bug */ cmd->cdb[7] = pad >> 8; cmd->cdb[8] = pad; #endif QPRINTF(("sdgo[%d, %d]: %s @%d >%d\n", am->amiga_ctlr, am->amiga_slave, bp->b_flags & B_READ ? "R" : "W", bp->b_cylin, pad)); pad = (bp->b_bcount & (sc->sc_blksize - 1)) != 0; #ifdef DEBUG if (pad) printf("sd%d: partial block xfer -- %x bytes\n", unit, bp->b_bcount); #endif sdstats[unit].sdtransfers++; } if ((am->amiga_cdriver->d_go)(am->amiga_ctlr, am->amiga_slave, sc->sc_punit, bp, cmd, pad) == 0) { if (am->amiga_dk >= 0) { dk_busy |= 1 << am->amiga_dk; ++dk_seek[am->amiga_dk]; ++dk_xfer[am->amiga_dk]; dk_wds[am->amiga_dk] += bp->b_bcount >> 6; } return; } #ifdef DEBUG if (sddebug & SDB_ERROR) printf("sd%d: sdstart: %s adr %d blk %d len %d ecnt %d\n", unit, bp->b_flags & B_READ? "read" : "write", bp->b_un.b_addr, bp->b_cylin, bp->b_bcount, sdtab[unit].b_errcnt); #endif bp->b_flags |= B_ERROR; bp->b_error = EIO; sdfinish(unit, sc, bp); } void sdintr(unit, stat) register int unit; int stat; { register struct sd_softc *sc = &sd_softc[unit]; register struct buf *bp = sdtab[unit].b_actf; register struct amiga_device *am = sc->sc_ad; int cond; if (bp == NULL) { printf("sd%d: bp == NULL\n", unit); return; } if (am->amiga_dk >= 0) dk_busy &=~ (1 << am->amiga_dk); if (stat) { #ifdef DEBUG if (sddebug & SDB_ERROR) printf("sd%d: sdintr: bad scsi status 0x%x\n", unit, stat); #endif cond = sderror(unit, sc, am, stat); if (cond) { if (cond < 0 && sdtab[unit].b_errcnt++ < SDRETRY) { #ifdef DEBUG if (sddebug & SDB_ERROR) printf("sd%d: retry #%d\n", unit, sdtab[unit].b_errcnt); #endif sdstart(unit); return; } bp->b_flags |= B_ERROR; bp->b_error = EIO; } } sdfinish(unit, sc, bp); } #if 1 u_int sdminphys (bp) struct buf *bp; { register int unit = sdunit(bp->b_dev); register struct sd_softc *sc = &sd_softc[unit]; register struct partition *pinfo = &sc->sc_label.d_partitions[sdpart(bp->b_dev)]; register daddr_t bn; register int sz, s; /* first restrict by max amount of physio possible */ bp->b_bcount = min(MAXPHYS, bp->b_bcount); /* then restrict by partition size (code replicated from sdstrategy). Should minphys() really fiddle around with b_resid and b_flags ??? XXXX */ bn = bp->b_blkno; sz = howmany(bp->b_bcount, DEV_BSIZE); if (bn < 0 || bn + sz > pinfo->p_size) { sz = pinfo->p_size - bn; if (sz == 0) { bp->b_resid = bp->b_bcount; goto done; } if (sz < 0) { bp->b_error = EINVAL; bp->b_flags |= B_ERROR; goto done; } bp->b_bcount = dbtob(sz); } return bp->b_bcount; done: return 0; } int sdread(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { register int unit = sdunit(dev); register int pid; if ((pid = sd_softc[unit].sc_format_pid) && pid != uio->uio_procp->p_pid) return (EPERM); return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); } int sdwrite(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { register int unit = sdunit(dev); register int pid; if ((pid = sd_softc[unit].sc_format_pid) && pid != uio->uio_procp->p_pid) return (EPERM); return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); } #endif int sdioctl(dev, cmd, data, flag, p) dev_t dev; int cmd; caddr_t data; int flag; struct proc *p; { register int unit = sdunit(dev); register struct sd_softc *sc = &sd_softc[unit]; struct disklabel *dl; int error; switch (cmd) { default: return (EINVAL); case DIOCGDINFO: *(struct disklabel *)data = sc->sc_label; return 0; case DIOCSDINFO: if ((flag & FWRITE) == 0) return EBADF; dl = (struct disklabel *)data; if (error = setdisklabel(&sc->sc_label, dl, 0, 0)); return error; sc->sc_have_label = 1; return 0; case DIOCWLABEL: if ((flag & FWRITE) == 0) return EBADF; sc->sc_write_label = *(int *)data; return 0; case DIOCWDINFO: if ((flag & FWRITE) == 0) return EBADF; dl = (struct disklabel *)data; if (error = setdisklabel (&sc->sc_label, dl, 0, 0)) return error; sc->sc_have_label = 1; #if 0 old_wlabel = as->wlabel; as->wlabel = 1; error = writedisklabel(dev, asstrategy, &as->label, as->dospart); as->wlabel = old_wlabel; #endif 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)&sdcmd[unit], sizeof(sdcmd[0])); return (0); case SDIOCSENSE: /* * return the SCSI sense data saved after the last * operation that completed with "check condition" status. */ bcopy((caddr_t)&sdsense[unit], data, sizeof(sdsense[0])); return (0); } /*NOTREACHED*/ } int sdsize(dev) dev_t dev; { register int unit = sdunit(dev); register struct sd_softc *sc = &sd_softc[unit]; if (unit >= NSD || (sc->sc_flags & SDF_ALIVE) == 0) return(-1); return(sc->sc_label.d_partitions[sdpart(dev)].p_size); } /* * Non-interrupt driven, non-dma dump routine. */ int sddump(dev) dev_t dev; { int part = sdpart(dev); int unit = sdunit(dev); register struct sd_softc *sc = &sd_softc[unit]; register struct amiga_device *am = sc->sc_ad; register daddr_t baddr; register int maddr; register int pages, i; int stat; extern int lowram; /* * Hmm... all vax drivers dump maxfree pages which is physmem minus * the message buffer. Is there a reason for not dumping the * message buffer? Savecore expects to read 'dumpsize' pages of * dump, where dumpsys() sets dumpsize to physmem! */ pages = physmem; /* is drive ok? */ if (unit >= NSD || (sc->sc_flags & SDF_ALIVE) == 0) return (ENXIO); /* dump parameters in range? */ if (dumplo < 0 || dumplo >= sc->sc_label.d_partitions[part].p_size) return (EINVAL); if (dumplo + ctod(pages) > sc->sc_label.d_partitions[part].p_size) pages = dtoc(sc->sc_label.d_partitions[part].p_size - dumplo); maddr = ctob(lowram); baddr = dumplo + sc->sc_label.d_partitions[part].p_offset; /* scsi bus idle? */ if (!(am->amiga_cdriver->d_req)(&sc->sc_dq)) { (am->amiga_cdriver->d_reset)(am->amiga_ctlr); sdreset(sc, sc->sc_ad); printf("[ drive %d reset ] ", unit); } for (i = 0; i < pages; i++) { #define NPGMB (1024*1024/NBPG) /* print out how many Mbs we have dumped */ if (i && (i % NPGMB) == 0) printf("%d ", i / NPGMB); #undef NPBMG pmap_enter(pmap_kernel(), vmmap, maddr, VM_PROT_READ, TRUE); stat = (am->amiga_cdriver->d_ttwrite)(am->amiga_ctlr, am->amiga_slave, sc->sc_punit, vmmap, NBPG, baddr, sc->sc_bshift); if (stat) { printf("sddump: scsi write error 0x%x\n", stat); return (EIO); } maddr += NBPG; baddr += ctod(1); } return (0); } #endif