/* $OpenBSD: bugdev.c,v 1.2 2002/03/14 01:26:40 millert Exp $ */ /* * Copyright (c) 1993 Paul Kranenburg * All rights reserved. * * 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 Paul Kranenburg. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ #include #include #include #include "stand.h" #include "libsa.h" void cputobsdlabel(struct disklabel *lp, struct cpu_disklabel *clp); int errno; struct bugsc_softc { int fd; /* Prom file descriptor */ int poff; /* Partition offset */ int psize; /* Partition size */ short ctrl; short dev; } bugsc_softc[1]; int devopen(f, fname, file) struct open_file *f; const char *fname; char **file; { register struct bugsc_softc *pp = &bugsc_softc[0]; int error, i, dn = 0, pn = 0; char *dev, *cp; static char iobuf[MAXBSIZE]; struct disklabel sdlabel; dev = bugargs.arg_start; /* * Extract partition # from boot device string. */ for (cp = dev; *cp; cp++) /* void */; while (*cp != '/' && cp > dev) { if (*cp == ':') pn = *(cp+1) - 'a'; --cp; } pp->fd = bugscopen(f); if (pp->fd < 0) { printf("Can't open device `%s'\n", dev); return (ENXIO); } error = bugscstrategy(pp, F_READ, LABELSECTOR, DEV_BSIZE, iobuf, &i); if (error) return (error); if (i != DEV_BSIZE) return (EINVAL); cputobsdlabel(&sdlabel, (struct cpu_disklabel *)iobuf); pp->poff = sdlabel.d_partitions[pn].p_offset; pp->psize = sdlabel.d_partitions[pn].p_size; f->f_dev = devsw; f->f_devdata = (void *)pp; *file = (char *)fname; return (0); } /* silly block scale factor */ #define BUG_BLOCK_SIZE 256 #define BUG_SCALE (512/BUG_BLOCK_SIZE) int bugscstrategy(devdata, func, dblk, size, buf, rsize) void *devdata; int func; daddr_t dblk; size_t size; void *buf; size_t *rsize; { struct mvmeprom_dskio dio; register struct bugsc_softc *pp = (struct bugsc_softc *)devdata; daddr_t blk = dblk + pp->poff; twiddle(); dio.ctrl_lun = pp->ctrl; dio.dev_lun = pp->dev; dio.status = 0; dio.pbuffer = buf; dio.blk_num = blk * BUG_SCALE; dio.blk_cnt = size / BUG_BLOCK_SIZE; /* assumed size in bytes */ dio.flag = 0; dio.addr_mod = 0; #ifdef DEBUG printf("bugscstrategy: size=%d blk=%d buf=%x\n", size, blk, buf); printf("ctrl %d dev %d\n", dio.ctrl_lun, dio.dev_lun); #endif mvmeprom_diskrd(&dio); *rsize = dio.blk_cnt * BUG_BLOCK_SIZE; #ifdef DEBUG printf("rsize %d status %x\n", *rsize, dio.status); #endif if (dio.status) return (EIO); return (0); } int bugscopen(f) struct open_file *f; { #ifdef DEBUG printf("bugscopen:\n"); #endif f->f_devdata = (void *)bugsc_softc; bugsc_softc[0].ctrl = (short)bugargs.ctrl_lun; bugsc_softc[0].dev = (short)bugargs.dev_lun; #ifdef DEBUG printf("using mvmebug ctrl %d dev %d\n", bugsc_softc[0].ctrl, bugsc_softc[0].dev); #endif return (0); } int bugscclose(f) struct open_file *f; { return (EIO); } int bugscioctl(f, cmd, data) struct open_file *f; u_long cmd; void *data; { return (EIO); } void cputobsdlabel(lp, clp) struct disklabel *lp; struct cpu_disklabel *clp; { int i; lp->d_magic = clp->magic1; lp->d_type = clp->type; lp->d_subtype = clp->subtype; bcopy(clp->vid_vd, lp->d_typename, 16); bcopy(clp->packname, lp->d_packname, 16); lp->d_secsize = clp->cfg_psm; lp->d_nsectors = clp->cfg_spt; lp->d_ncylinders = clp->cfg_trk; /* trk is really num of cyl! */ lp->d_ntracks = clp->cfg_hds; lp->d_secpercyl = clp->secpercyl; lp->d_secperunit = clp->secperunit; lp->d_secpercyl = clp->secpercyl; lp->d_secperunit = clp->secperunit; lp->d_sparespertrack = clp->sparespertrack; lp->d_sparespercyl = clp->sparespercyl; lp->d_acylinders = clp->acylinders; lp->d_rpm = clp->rpm; lp->d_interleave = clp->cfg_ilv; lp->d_trackskew = clp->cfg_sof; lp->d_cylskew = clp->cylskew; lp->d_headswitch = clp->headswitch; /* this silly table is for winchester drives */ switch (clp->cfg_ssr) { case 0: lp->d_trkseek = 0; break; case 1: lp->d_trkseek = 6; break; case 2: lp->d_trkseek = 10; break; case 3: lp->d_trkseek = 15; break; case 4: lp->d_trkseek = 20; break; default: lp->d_trkseek = 0; break; } lp->d_flags = clp->flags; for (i = 0; i < NDDATA; i++) lp->d_drivedata[i] = clp->drivedata[i]; for (i = 0; i < NSPARE; i++) lp->d_spare[i] = clp->spare[i]; lp->d_magic2 = clp->magic2; lp->d_checksum = clp->checksum; lp->d_npartitions = clp->partitions; lp->d_bbsize = clp->bbsize; lp->d_sbsize = clp->sbsize; bcopy(clp->vid_4, &(lp->d_partitions[0]),sizeof (struct partition) * 4); bcopy(clp->cfg_4, &(lp->d_partitions[4]), sizeof (struct partition) * ((MAXPARTITIONS < 16) ? (MAXPARTITIONS - 4) : 12)); }