/* $NetBSD: iris_disk.c,v 1.1 2019/01/12 16:44:47 tsutsui Exp $ */ /* * Copyright (c) 2018 Naruaki Etomi * 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. * * 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. */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1990, 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 the Systems * Programming Group of the University of Utah Computer Science Department. * * 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. 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. * * from: Utah $Hdr: sd.c 1.9 92/12/21$ * * @(#)sd.c 8.1 (Berkeley) 6/10/93 */ /* * Silicon Graphics "IRIS" series MIPS processors machine bootloader. * Disk I/O API routine. * Most of the following was adapted from /sys/arch/hp300/stand/common/sd.c. * NetBSD: sd.c,v 1.11 2011/07/17 20:54:40 joerg Exp */ #include <lib/libsa/stand.h> #include <sys/param.h> #include <sys/disklabel.h> #ifndef INDIGO_R3K_MODE #include <dev/arcbios/arcbios.h> #endif #include "disk.h" #include "iris_machdep.h" #include "iris_scsivar.h" struct disk_softc { int sc_part; /* disk partition number */ char sc_retry; char sc_alive; short sc_blkshift; struct disklabel sc_label; /* disk label for this disk */ }; static int diskinit(struct disk_softc *); #define DISKRETRY 2 int diskstrategy(void *devdata, int rw, daddr_t bn, size_t reqcnt, void *addr, size_t *cnt) { struct disk_softc *sc; struct disklabel *lp; uint8_t *buf; daddr_t blk; u_int nblk; int stat; sc = devdata; buf = addr; lp = &sc->sc_label; blk = bn + (lp->d_partitions[sc->sc_part].p_offset >> sc->sc_blkshift); nblk = reqcnt >> sc->sc_blkshift; sc->sc_retry = 0; retry: stat = scsi_read(buf, reqcnt, blk, nblk); if (stat) { DELAY(1000000); if (++sc->sc_retry > DISKRETRY) { return EIO; } printf("diskstrategy retry\n"); goto retry; } *cnt = reqcnt; return 0; } static int diskinit(struct disk_softc *sc) { uint8_t capbuf[2]; uint8_t stat; stat = scsi_test_unit_rdy(); if (stat != 0) { /* drive may be doing RTZ - wait a bit */ DELAY(1000000); stat = scsi_test_unit_rdy(); if (stat != 0) { printf("diskinit abort!\n"); printf("Boot failed! Halting...\n"); reboot(); } } /* * try to get the drive block size. */ capbuf[0] = 0; capbuf[1] = 0; stat = scsi_read_capacity((uint8_t *)capbuf, sizeof(capbuf)); if (stat == 0) { if (capbuf[1] > DEV_BSIZE) for (; capbuf[1] > DEV_BSIZE; capbuf[1] >>= 1) ++sc->sc_blkshift; } sc->sc_alive = 1; return 1; } int diskopen(struct open_file *f, ...) { struct disk_softc *sc; struct disklabel *lp; size_t cnt; char *msg, buf[DEV_BSIZE]; int error; cnt = 0; sc = alloc(sizeof(struct disk_softc)); memset(sc, 0, sizeof(struct disk_softc)); f->f_devdata = (void *)sc; sc->sc_part = scsi_part; if (sc->sc_alive == 0) { if (diskinit(sc) == 0) return ENXIO; } /* try to read disk label and partition table information */ lp = &sc->sc_label; lp->d_secsize = DEV_BSIZE; lp->d_secpercyl = 1; lp->d_npartitions = MAXPARTITIONS; lp->d_partitions[scsi_part].p_offset = 0; lp->d_partitions[scsi_part].p_size = 0x7fffffff; error = diskstrategy(sc, F_READ, (daddr_t)LABELSECTOR, DEV_BSIZE, buf, &cnt); if (error || cnt != DEV_BSIZE) { printf("diskstrategy error...\n"); dealloc(sc, sizeof(struct disk_softc)); return ENXIO; } msg = getdisklabel(buf, lp); if (msg) { /* If no label, just assume 0 and return */ printf("No disklabel...\n"); reboot(); } return 0; } int diskclose(struct open_file *f) { struct disk_softc *sc = f->f_devdata; dealloc(sc, sizeof *sc); f->f_devdata = NULL; return 0; }
