2166 lines
53 KiB
C
2166 lines
53 KiB
C
/* $NetBSD: xy.c,v 1.13 1997/02/28 21:23:07 gwr Exp $ */
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/*
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*
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* Copyright (c) 1995 Charles D. Cranor
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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*
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* x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r
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*
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* author: Chuck Cranor <chuck@ccrc.wustl.edu>
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* id: $NetBSD: xy.c,v 1.13 1997/02/28 21:23:07 gwr Exp $
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* started: 14-Sep-95
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* references: [1] Xylogics Model 753 User's Manual
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* part number: 166-753-001, Revision B, May 21, 1988.
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* "Your Partner For Performance"
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* [2] other NetBSD disk device drivers
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* [3] Xylogics Model 450 User's Manual
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* part number: 166-017-001, Revision B, 1983.
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* [4] Addendum to Xylogics Model 450 Disk Controller User's
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* Manual, Jan. 1985.
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* [5] The 451 Controller, Rev. B3, September 2, 1986.
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* [6] David Jones <dej@achilles.net>'s unfinished 450/451 driver
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*
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*/
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#undef XYC_DEBUG /* full debug */
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#undef XYC_DIAG /* extra sanity checks */
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#if defined(DIAGNOSTIC) && !defined(XYC_DIAG)
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#define XYC_DIAG /* link in with master DIAG option */
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#endif
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/buf.h>
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#include <sys/uio.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/disklabel.h>
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#include <sys/disk.h>
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#include <sys/syslog.h>
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#include <sys/dkbad.h>
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#include <sys/conf.h>
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#include <vm/vm.h>
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#include <vm/vm_kern.h>
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#include <machine/autoconf.h>
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#include <machine/sun_disklabel.h>
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#include <machine/dvma.h>
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#include <sun3/dev/xyreg.h>
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#include <sun3/dev/xyvar.h>
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#include <sun3/dev/xio.h>
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/*
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* macros
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*/
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/*
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* XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC
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*/
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#define XYC_GO(XYC, ADDR) { \
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(XYC)->xyc_addr_lo = ((ADDR) & 0xff); \
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(ADDR) = ((ADDR) >> 8); \
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(XYC)->xyc_addr_hi = ((ADDR) & 0xff); \
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(ADDR) = ((ADDR) >> 8); \
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(XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \
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(ADDR) = ((ADDR) >> 8); \
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(XYC)->xyc_reloc_hi = (ADDR); \
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(XYC)->xyc_csr = XYC_GBSY; /* go! */ \
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}
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/*
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* XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd)
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*/
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#define XYC_DONE(SC,ER) { \
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if ((ER) == XY_ERR_AOK) { \
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(ER) = (SC)->ciorq->errno; \
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(SC)->ciorq->mode = XY_SUB_FREE; \
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wakeup((SC)->ciorq); \
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} \
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}
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/*
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* XYC_ADVANCE: advance iorq's pointers by a number of sectors
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*/
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#define XYC_ADVANCE(IORQ, N) { \
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if (N) { \
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(IORQ)->sectcnt -= (N); \
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(IORQ)->blockno += (N); \
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(IORQ)->dbuf += ((N)*XYFM_BPS); \
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} \
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}
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/*
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* note - addresses you can sleep on:
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* [1] & of xy_softc's "state" (waiting for a chance to attach a drive)
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* [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish)
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*/
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/*
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* function prototypes
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* "xyc_*" functions are internal, all others are external interfaces
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*/
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/* internals */
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struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *));
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int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int));
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char *xyc_e2str __P((int));
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int xyc_entoact __P((int));
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int xyc_error __P((struct xyc_softc *, struct xy_iorq *,
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struct xy_iopb *, int));
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int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *));
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void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int));
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int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *));
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int xyc_remove_iorq __P((struct xyc_softc *));
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int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int,
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struct xy_softc *));
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inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *,
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struct xy_softc *, int, u_long, int,
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caddr_t, struct buf *));
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void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int));
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int xyc_start __P((struct xyc_softc *, struct xy_iorq *));
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int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *));
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int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int));
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void xyc_tick __P((void *));
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int xyc_unbusy __P((struct xyc *, int));
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int xyc_xyreset __P((struct xyc_softc *, struct xy_softc *));
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/* machine interrupt hook */
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int xycintr __P((void *));
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/* bdevsw, cdevsw */
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bdev_decl(xy);
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cdev_decl(xy);
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/* autoconf */
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int xycmatch __P((struct device *, struct cfdata *, void *));
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void xycattach __P((struct device *, struct device *, void *));
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int xymatch __P((struct device *, struct cfdata *, void *));
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void xyattach __P((struct device *, struct device *, void *));
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int xyc_print __P((void *, char *name));
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static void xydummystrat __P((struct buf *));
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int xygetdisklabel __P((struct xy_softc *, void *));
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/*
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* cfdrivers: device driver interface to autoconfig
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*/
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struct cfattach xyc_ca = {
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sizeof(struct xyc_softc), xycmatch, xycattach
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};
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struct cfdriver xyc_cd = {
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NULL, "xyc", DV_DULL
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};
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struct cfattach xy_ca = {
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sizeof(struct xy_softc), xymatch, xyattach
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};
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struct cfdriver xy_cd = {
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NULL, "xy", DV_DISK
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};
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struct xyc_attach_args { /* this is the "aux" args to xyattach */
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int driveno; /* unit number */
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char *dvmabuf; /* scratch buffer for reading disk label */
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int fullmode; /* submit mode */
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int booting; /* are we booting or not? */
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};
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/*
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* dkdriver
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*/
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struct dkdriver xydkdriver = { xystrategy };
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/*
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* start: disk label fix code (XXX)
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*/
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static void *xy_labeldata;
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static void
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xydummystrat(bp)
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struct buf *bp;
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{
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if (bp->b_bcount != XYFM_BPS)
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panic("xydummystrat");
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bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS);
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bp->b_flags |= B_DONE;
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bp->b_flags &= ~B_BUSY;
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}
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int
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xygetdisklabel(xy, b)
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struct xy_softc *xy;
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void *b;
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{
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char *err;
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struct sun_disklabel *sdl;
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/* We already have the label data in `b'; setup for dummy strategy */
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xy_labeldata = b;
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/* Required parameter for readdisklabel() */
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xy->sc_dk.dk_label->d_secsize = XYFM_BPS;
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err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART),
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xydummystrat,
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xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel);
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if (err) {
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printf("%s: %s\n", xy->sc_dev.dv_xname, err);
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return(XY_ERR_FAIL);
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}
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/* Ok, we have the label; fill in `pcyl' if there's SunOS magic */
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sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block;
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if (sdl->sl_magic == SUN_DKMAGIC)
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xy->pcyl = sdl->sl_pcyl;
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else {
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printf("%s: WARNING: no `pcyl' in disk label.\n",
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xy->sc_dev.dv_xname);
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xy->pcyl = xy->sc_dk.dk_label->d_ncylinders +
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xy->sc_dk.dk_label->d_acylinders;
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printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n",
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xy->sc_dev.dv_xname, xy->pcyl);
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}
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xy->ncyl = xy->sc_dk.dk_label->d_ncylinders;
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xy->acyl = xy->sc_dk.dk_label->d_acylinders;
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xy->nhead = xy->sc_dk.dk_label->d_ntracks;
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xy->nsect = xy->sc_dk.dk_label->d_nsectors;
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xy->sectpercyl = xy->nhead * xy->nsect;
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xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by
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* sun->bsd */
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return(XY_ERR_AOK);
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}
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/*
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* end: disk label fix code (XXX)
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*/
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/*
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* a u t o c o n f i g f u n c t i o n s
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*/
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/*
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* xycmatch: determine if xyc is present or not. we do a
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* soft reset to detect the xyc.
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*/
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int xycmatch(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct confargs *ca = aux;
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int x;
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if (ca->ca_bustype != BUS_VME16)
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return (0);
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/* Default interrupt priority always splbio==2 */
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if (ca->ca_intpri == -1)
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ca->ca_intpri = 2;
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x = bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1);
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if (x == -1)
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return (0);
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return (1);
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}
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/*
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* xycattach: attach controller
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*/
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void
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xycattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct xyc_softc *xyc = (void *) self;
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struct confargs *ca = aux;
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struct xyc_attach_args xa;
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int lcv, err, pri, res, pbsz;
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void *tmp, *tmp2;
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u_long ultmp;
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/* get addressing and intr level stuff from autoconfig and load it
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* into our xyc_softc. */
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xyc->xyc = (struct xyc *)
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bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc));
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xyc->ipl = ca->ca_intpri;
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xyc->vector = ca->ca_intvec;
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xyc->no_ols = 0; /* XXX should be from config */
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for (lcv = 0; lcv < XYC_MAXDEV; lcv++)
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xyc->sc_drives[lcv] = (struct xy_softc *) 0;
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/*
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* allocate and zero buffers
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* check boundaries of the KVA's ... all IOPBs must reside in
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* the same 64K region.
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*/
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pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb);
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tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */
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ultmp = (u_long) tmp;
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if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) {
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tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */
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dvma_free(tmp2, pbsz);
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ultmp = (u_long) tmp;
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if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) {
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printf("%s: can't alloc IOPB mem in 64K\n",
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xyc->sc_dev.dv_xname);
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return;
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}
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}
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bzero(tmp, pbsz);
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xyc->iopbase = tmp;
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xyc->dvmaiopb = (struct xy_iopb *)
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dvma_kvtopa((long) xyc->iopbase, BUS_VME16);
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xyc->reqs = (struct xy_iorq *)
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malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT);
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if (xyc->reqs == NULL)
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panic("xyc malloc");
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bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq));
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/*
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* init iorq to iopb pointers, and non-zero fields in the
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* iopb which never change.
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*/
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for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) {
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xyc->xy_chain[lcv] = NULL;
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xyc->reqs[lcv].iopb = &xyc->iopbase[lcv];
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xyc->iopbase[lcv].asr = 1; /* always the same */
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xyc->iopbase[lcv].eef = 1; /* always the same */
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xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */
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xyc->iopbase[lcv].aud = 1; /* always the same */
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xyc->iopbase[lcv].relo = 1; /* always the same */
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xyc->iopbase[lcv].thro = XY_THRO;/* always the same */
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}
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xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */
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xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */
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xyc->xy_hand = 0;
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/* read controller parameters and insure we have a 450/451 */
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err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL);
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res = xyc->ciopb->ctyp;
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XYC_DONE(xyc, err);
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if (res != XYCT_450) {
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if (err)
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printf(": %s: ", xyc_e2str(err));
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printf(": doesn't identify as a 450/451\n");
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return;
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}
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printf(": Xylogics 450/451");
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if (xyc->no_ols)
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printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */
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printf("\n");
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if (err) {
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printf("%s: error: %s\n", xyc->sc_dev.dv_xname,
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xyc_e2str(err));
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return;
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}
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if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) {
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printf("%s: 24 bit addressing turned off\n",
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xyc->sc_dev.dv_xname);
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printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n");
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printf("to enable 24 bit mode and this driver\n");
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return;
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}
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/* link in interrupt with higher level software */
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isr_add_vectored(xycintr, (void *)xyc,
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ca->ca_intpri, ca->ca_intvec);
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evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt);
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/* now we must look for disks using autoconfig */
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xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS);
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xa.fullmode = XY_SUB_POLL;
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xa.booting = 1;
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for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++)
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(void) config_found(self, (void *) &xa, xyc_print);
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dvma_free(xa.dvmabuf, XYFM_BPS);
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/* start the watchdog clock */
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timeout(xyc_tick, xyc, XYC_TICKCNT);
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}
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int
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xyc_print(aux, name)
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void *aux;
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char *name;
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{
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struct xyc_attach_args *xa = aux;
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if (name != NULL)
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printf("%s: ", name);
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if (xa->driveno != -1)
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printf(" drive %d", xa->driveno);
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return UNCONF;
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}
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/*
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* xymatch: probe for disk.
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*
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* note: we almost always say disk is present. this allows us to
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* spin up and configure a disk after the system is booted (we can
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* call xyattach!).
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*/
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int
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xymatch(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct xyc_softc *xyc = (void *) parent;
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struct xyc_attach_args *xa = aux;
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/* looking for autoconf wildcard or exact match */
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if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != xa->driveno)
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return 0;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
/*
|
|
* xyattach: attach a disk. this can be called from autoconf and also
|
|
* from xyopen/xystrategy.
|
|
*/
|
|
void
|
|
xyattach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
|
|
{
|
|
struct xy_softc *xy = (void *) self, *oxy;
|
|
struct xyc_softc *xyc = (void *) parent;
|
|
struct xyc_attach_args *xa = aux;
|
|
int res, err, spt, mb, blk, lcv, fmode, s, newstate;
|
|
struct dkbad *dkb;
|
|
struct bootpath *bp;
|
|
|
|
/*
|
|
* Always re-initialize the disk structure. We want statistics
|
|
* to start with a clean slate.
|
|
*/
|
|
bzero(&xy->sc_dk, sizeof(xy->sc_dk));
|
|
xy->sc_dk.dk_driver = &xydkdriver;
|
|
xy->sc_dk.dk_name = xy->sc_dev.dv_xname;
|
|
|
|
/* if booting, init the xy_softc */
|
|
|
|
if (xa->booting) {
|
|
xy->state = XY_DRIVE_UNKNOWN; /* to start */
|
|
xy->flags = 0;
|
|
xy->parent = xyc;
|
|
|
|
/* init queue of waiting bufs */
|
|
|
|
xy->xyq.b_active = 0;
|
|
xy->xyq.b_actf = 0;
|
|
xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */
|
|
|
|
xy->xyrq = &xyc->reqs[xa->driveno];
|
|
|
|
}
|
|
xy->xy_drive = xa->driveno;
|
|
fmode = xa->fullmode;
|
|
xyc->sc_drives[xa->driveno] = xy;
|
|
|
|
/* if not booting, make sure we are the only process in the attach for
|
|
* this drive. if locked out, sleep on it. */
|
|
|
|
if (!xa->booting) {
|
|
s = splbio();
|
|
while (xy->state == XY_DRIVE_ATTACHING) {
|
|
if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) {
|
|
splx(s);
|
|
return;
|
|
}
|
|
}
|
|
printf("%s at %s",
|
|
xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname);
|
|
}
|
|
/* we now have control */
|
|
|
|
xy->state = XY_DRIVE_ATTACHING;
|
|
newstate = XY_DRIVE_UNKNOWN;
|
|
|
|
/* first try and reset the drive */
|
|
|
|
err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode);
|
|
XYC_DONE(xyc, err);
|
|
if (err == XY_ERR_DNRY) {
|
|
printf(" drive %d: off-line\n", xa->driveno);
|
|
goto done;
|
|
}
|
|
if (err) {
|
|
printf(": ERROR 0x%02x (%s)\n", err, xyc_e2str(err));
|
|
goto done;
|
|
}
|
|
printf(" drive %d: ready", xa->driveno);
|
|
|
|
/*
|
|
* now set drive parameters (to semi-bogus values) so we can read the
|
|
* disk label.
|
|
*/
|
|
xy->pcyl = xy->ncyl = 1;
|
|
xy->acyl = 0;
|
|
xy->nhead = 1;
|
|
xy->nsect = 1;
|
|
xy->sectpercyl = 1;
|
|
for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */
|
|
xy->dkb.bt_bad[lcv].bt_cyl =
|
|
xy->dkb.bt_bad[lcv].bt_trksec = 0xffff;
|
|
|
|
/* read disk label */
|
|
for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ;
|
|
xy->drive_type++) {
|
|
err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1,
|
|
xa->dvmabuf, fmode);
|
|
XYC_DONE(xyc, err);
|
|
if (err == XY_ERR_AOK) break;
|
|
}
|
|
|
|
if (err != XY_ERR_AOK) {
|
|
printf("\n%s: reading disk label failed: %s\n",
|
|
xy->sc_dev.dv_xname, xyc_e2str(err));
|
|
goto done;
|
|
}
|
|
printf(" (drive type %d)\n", xy->drive_type);
|
|
|
|
newstate = XY_DRIVE_NOLABEL;
|
|
|
|
xy->hw_spt = spt = 0; /* XXX needed ? */
|
|
/* Attach the disk: must be before getdisklabel to malloc label */
|
|
disk_attach(&xy->sc_dk);
|
|
|
|
if (xygetdisklabel(xy, xa->dvmabuf) != XY_ERR_AOK)
|
|
goto done;
|
|
|
|
/* inform the user of what is up */
|
|
printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname,
|
|
xa->dvmabuf, xy->pcyl);
|
|
mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS);
|
|
printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n",
|
|
xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect,
|
|
XYFM_BPS);
|
|
|
|
/*
|
|
* 450/451 stupidity: the drive type is encoded into the format
|
|
* of the disk. the drive type in the IOPB must match the drive
|
|
* type in the format, or you will not be able to do I/O to the
|
|
* disk (you get header not found errors). if you have two drives
|
|
* of different sizes that have the same drive type in their
|
|
* formatting then you are out of luck.
|
|
*
|
|
* this problem was corrected in the 753/7053.
|
|
*/
|
|
|
|
for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) {
|
|
oxy = xyc->sc_drives[lcv];
|
|
if (oxy == NULL || oxy == xy) continue;
|
|
if (oxy->drive_type != xy->drive_type) continue;
|
|
if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl ||
|
|
xy->nhead != oxy->nhead) {
|
|
printf("%s: %s and %s must be the same size!\n",
|
|
xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname,
|
|
oxy->sc_dev.dv_xname);
|
|
panic("xy drive size mismatch");
|
|
}
|
|
}
|
|
|
|
|
|
/* now set the real drive parameters! */
|
|
|
|
blk = (xy->nsect - 1) +
|
|
((xy->nhead - 1) * xy->nsect) +
|
|
((xy->pcyl - 1) * xy->nsect * xy->nhead);
|
|
err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode);
|
|
XYC_DONE(xyc, err);
|
|
if (err) {
|
|
printf("%s: write drive size failed: %s\n",
|
|
xy->sc_dev.dv_xname, xyc_e2str(err));
|
|
goto done;
|
|
}
|
|
newstate = XY_DRIVE_ONLINE;
|
|
|
|
/*
|
|
* read bad144 table. this table resides on the first sector of the
|
|
* last track of the disk (i.e. second cyl of "acyl" area).
|
|
*/
|
|
|
|
blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) +
|
|
/* last cyl */
|
|
(xy->nhead - 1) * xy->nsect; /* last head */
|
|
err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1,
|
|
xa->dvmabuf, fmode);
|
|
XYC_DONE(xyc, err);
|
|
if (err) {
|
|
printf("%s: reading bad144 failed: %s\n",
|
|
xy->sc_dev.dv_xname, xyc_e2str(err));
|
|
goto done;
|
|
}
|
|
|
|
/* check dkbad for sanity */
|
|
dkb = (struct dkbad *) xa->dvmabuf;
|
|
for (lcv = 0; lcv < 126; lcv++) {
|
|
if ((dkb->bt_bad[lcv].bt_cyl == 0xffff ||
|
|
dkb->bt_bad[lcv].bt_cyl == 0) &&
|
|
dkb->bt_bad[lcv].bt_trksec == 0xffff)
|
|
continue; /* blank */
|
|
if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl)
|
|
break;
|
|
if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead)
|
|
break;
|
|
if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect)
|
|
break;
|
|
}
|
|
if (lcv != 126) {
|
|
printf("%s: warning: invalid bad144 sector!\n",
|
|
xy->sc_dev.dv_xname);
|
|
} else {
|
|
bcopy(xa->dvmabuf, &xy->dkb, XYFM_BPS);
|
|
}
|
|
|
|
dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */
|
|
|
|
done:
|
|
xy->state = newstate;
|
|
if (!xa->booting) {
|
|
wakeup(&xy->state);
|
|
splx(s);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* end of autoconfig functions
|
|
*/
|
|
|
|
/*
|
|
* { b , c } d e v s w f u n c t i o n s
|
|
*/
|
|
|
|
/*
|
|
* xyclose: close device
|
|
*/
|
|
int
|
|
xyclose(dev, flag, fmt)
|
|
dev_t dev;
|
|
int flag, fmt;
|
|
|
|
{
|
|
struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)];
|
|
int part = DISKPART(dev);
|
|
|
|
/* clear mask bits */
|
|
|
|
switch (fmt) {
|
|
case S_IFCHR:
|
|
xy->sc_dk.dk_copenmask &= ~(1 << part);
|
|
break;
|
|
case S_IFBLK:
|
|
xy->sc_dk.dk_bopenmask &= ~(1 << part);
|
|
break;
|
|
}
|
|
xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* xydump: crash dump system
|
|
*/
|
|
int
|
|
xydump(dev)
|
|
dev_t dev;
|
|
|
|
{
|
|
int unit, part;
|
|
struct xy_softc *xy;
|
|
|
|
unit = DISKUNIT(dev);
|
|
if (unit >= xy_cd.cd_ndevs)
|
|
return ENXIO;
|
|
part = DISKPART(dev);
|
|
|
|
xy = xy_cd.cd_devs[unit];
|
|
|
|
printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname,
|
|
'a' + part);
|
|
|
|
return ENXIO;
|
|
|
|
/* outline: globals: "dumplo" == sector number of partition to start
|
|
* dump at (convert to physical sector with partition table)
|
|
* "dumpsize" == size of dump in clicks "physmem" == size of physical
|
|
* memory (clicks, ctob() to get bytes) (normal case: dumpsize ==
|
|
* physmem)
|
|
*
|
|
* dump a copy of physical memory to the dump device starting at sector
|
|
* "dumplo" in the swap partition (make sure > 0). map in pages as
|
|
* we go. use polled I/O.
|
|
*
|
|
* XXX how to handle NON_CONTIG? */
|
|
|
|
}
|
|
|
|
/*
|
|
* xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks.
|
|
*/
|
|
int
|
|
xyioctl(dev, command, addr, flag, p)
|
|
dev_t dev;
|
|
u_long command;
|
|
caddr_t addr;
|
|
int flag;
|
|
struct proc *p;
|
|
|
|
{
|
|
struct xy_softc *xy;
|
|
struct xd_iocmd *xio;
|
|
int error, s, unit;
|
|
|
|
unit = DISKUNIT(dev);
|
|
|
|
if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL)
|
|
return (ENXIO);
|
|
|
|
/* switch on ioctl type */
|
|
|
|
switch (command) {
|
|
case DIOCSBAD: /* set bad144 info */
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
s = splbio();
|
|
bcopy(addr, &xy->dkb, sizeof(xy->dkb));
|
|
splx(s);
|
|
return 0;
|
|
|
|
case DIOCGDINFO: /* get disk label */
|
|
bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel));
|
|
return 0;
|
|
|
|
case DIOCGPART: /* get partition info */
|
|
((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label;
|
|
((struct partinfo *) addr)->part =
|
|
&xy->sc_dk.dk_label->d_partitions[DISKPART(dev)];
|
|
return 0;
|
|
|
|
case DIOCSDINFO: /* set disk label */
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
error = setdisklabel(xy->sc_dk.dk_label,
|
|
(struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0,
|
|
xy->sc_dk.dk_cpulabel);
|
|
if (error == 0) {
|
|
if (xy->state == XY_DRIVE_NOLABEL)
|
|
xy->state = XY_DRIVE_ONLINE;
|
|
}
|
|
return error;
|
|
|
|
case DIOCWLABEL: /* change write status of disk label */
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
if (*(int *) addr)
|
|
xy->flags |= XY_WLABEL;
|
|
else
|
|
xy->flags &= ~XY_WLABEL;
|
|
return 0;
|
|
|
|
case DIOCWDINFO: /* write disk label */
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
error = setdisklabel(xy->sc_dk.dk_label,
|
|
(struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0,
|
|
xy->sc_dk.dk_cpulabel);
|
|
if (error == 0) {
|
|
if (xy->state == XY_DRIVE_NOLABEL)
|
|
xy->state = XY_DRIVE_ONLINE;
|
|
|
|
/* Simulate opening partition 0 so write succeeds. */
|
|
xy->sc_dk.dk_openmask |= (1 << 0);
|
|
error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART),
|
|
xystrategy, xy->sc_dk.dk_label,
|
|
xy->sc_dk.dk_cpulabel);
|
|
xy->sc_dk.dk_openmask =
|
|
xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask;
|
|
}
|
|
return error;
|
|
|
|
case DIOSXDCMD:
|
|
xio = (struct xd_iocmd *) addr;
|
|
if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
|
|
return (error);
|
|
return (xyc_ioctlcmd(xy, dev, xio));
|
|
|
|
default:
|
|
return ENOTTY;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* xyopen: open drive
|
|
*/
|
|
|
|
int
|
|
xyopen(dev, flag, fmt)
|
|
dev_t dev;
|
|
int flag, fmt;
|
|
|
|
{
|
|
int unit, part;
|
|
struct xy_softc *xy;
|
|
struct xyc_attach_args xa;
|
|
|
|
/* first, could it be a valid target? */
|
|
|
|
unit = DISKUNIT(dev);
|
|
if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL)
|
|
return (ENXIO);
|
|
part = DISKPART(dev);
|
|
|
|
/* do we need to attach the drive? */
|
|
|
|
if (xy->state == XY_DRIVE_UNKNOWN) {
|
|
xa.driveno = xy->xy_drive;
|
|
xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS);
|
|
xa.fullmode = XY_SUB_WAIT;
|
|
xa.booting = 0;
|
|
xyattach((struct device *) xy->parent,
|
|
(struct device *) xy, &xa);
|
|
dvma_free(xa.dvmabuf, XYFM_BPS);
|
|
if (xy->state == XY_DRIVE_UNKNOWN) {
|
|
return (EIO);
|
|
}
|
|
}
|
|
/* check for partition */
|
|
|
|
if (part != RAW_PART &&
|
|
(part >= xy->sc_dk.dk_label->d_npartitions ||
|
|
xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) {
|
|
return (ENXIO);
|
|
}
|
|
/* set open masks */
|
|
|
|
switch (fmt) {
|
|
case S_IFCHR:
|
|
xy->sc_dk.dk_copenmask |= (1 << part);
|
|
break;
|
|
case S_IFBLK:
|
|
xy->sc_dk.dk_bopenmask |= (1 << part);
|
|
break;
|
|
}
|
|
xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
xyread(dev, uio)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
{
|
|
|
|
return (physio(xystrategy, NULL, dev, B_READ, minphys, uio));
|
|
}
|
|
|
|
int
|
|
xywrite(dev, uio)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
{
|
|
|
|
return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio));
|
|
}
|
|
|
|
|
|
/*
|
|
* xysize: return size of a partition for a dump
|
|
*/
|
|
|
|
int
|
|
xysize(dev)
|
|
dev_t dev;
|
|
|
|
{
|
|
struct xy_softc *xysc;
|
|
int unit, part, size;
|
|
|
|
/* valid unit? try an open */
|
|
|
|
if (xyopen(dev, 0, S_IFBLK) != 0)
|
|
return (-1);
|
|
|
|
/* do it */
|
|
|
|
xysc = xy_cd.cd_devs[DISKUNIT(dev)];
|
|
part = DISKPART(dev);
|
|
if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP)
|
|
size = -1; /* only give valid size for swap partitions */
|
|
else
|
|
size = xysc->sc_dk.dk_label->d_partitions[part].p_size;
|
|
if (xyclose(dev, 0, S_IFBLK) != 0)
|
|
return -1;
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* xystrategy: buffering system interface to xy.
|
|
*/
|
|
|
|
void
|
|
xystrategy(bp)
|
|
struct buf *bp;
|
|
|
|
{
|
|
struct xy_softc *xy;
|
|
struct xyc_softc *parent;
|
|
struct buf *wq;
|
|
int s, unit;
|
|
struct xyc_attach_args xa;
|
|
|
|
unit = DISKUNIT(bp->b_dev);
|
|
|
|
/* check for live device */
|
|
|
|
if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 ||
|
|
bp->b_blkno < 0 ||
|
|
(bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) {
|
|
bp->b_error = EINVAL;
|
|
goto bad;
|
|
}
|
|
/* do we need to attach the drive? */
|
|
|
|
if (xy->state == XY_DRIVE_UNKNOWN) {
|
|
xa.driveno = xy->xy_drive;
|
|
xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS);
|
|
xa.fullmode = XY_SUB_WAIT;
|
|
xa.booting = 0;
|
|
xyattach((struct device *)xy->parent, (struct device *)xy, &xa);
|
|
dvma_free(xa.dvmabuf, XYFM_BPS);
|
|
if (xy->state == XY_DRIVE_UNKNOWN) {
|
|
bp->b_error = EIO;
|
|
goto bad;
|
|
}
|
|
}
|
|
if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) {
|
|
/* no I/O to unlabeled disks, unless raw partition */
|
|
bp->b_error = EIO;
|
|
goto bad;
|
|
}
|
|
/* short circuit zero length request */
|
|
|
|
if (bp->b_bcount == 0)
|
|
goto done;
|
|
|
|
/* check bounds with label (disksubr.c). Determine the size of the
|
|
* transfer, and make sure it is within the boundaries of the
|
|
* partition. Adjust transfer if needed, and signal errors or early
|
|
* completion. */
|
|
|
|
if (bounds_check_with_label(bp, xy->sc_dk.dk_label,
|
|
(xy->flags & XY_WLABEL) != 0) <= 0)
|
|
goto done;
|
|
|
|
/*
|
|
* now we know we have a valid buf structure that we need to do I/O
|
|
* on.
|
|
*/
|
|
|
|
s = splbio(); /* protect the queues */
|
|
|
|
disksort(&xy->xyq, bp);
|
|
|
|
/* start 'em up */
|
|
|
|
xyc_start(xy->parent, NULL);
|
|
|
|
/* done! */
|
|
|
|
splx(s);
|
|
return;
|
|
|
|
bad: /* tells upper layers we have an error */
|
|
bp->b_flags |= B_ERROR;
|
|
done: /* tells upper layers we are done with this
|
|
* buf */
|
|
bp->b_resid = bp->b_bcount;
|
|
biodone(bp);
|
|
}
|
|
/*
|
|
* end of {b,c}devsw functions
|
|
*/
|
|
|
|
/*
|
|
* i n t e r r u p t f u n c t i o n
|
|
*
|
|
* xycintr: hardware interrupt.
|
|
*/
|
|
int
|
|
xycintr(v)
|
|
void *v;
|
|
|
|
{
|
|
struct xyc_softc *xycsc = v;
|
|
struct xy_softc *xy;
|
|
struct buf *bp;
|
|
|
|
/* kick the event counter */
|
|
|
|
xycsc->sc_intrcnt.ev_count++;
|
|
|
|
/* remove as many done IOPBs as possible */
|
|
|
|
xyc_remove_iorq(xycsc);
|
|
|
|
/* start any iorq's already waiting */
|
|
|
|
xyc_start(xycsc, NULL);
|
|
|
|
return (1);
|
|
}
|
|
/*
|
|
* end of interrupt function
|
|
*/
|
|
|
|
/*
|
|
* i n t e r n a l f u n c t i o n s
|
|
*/
|
|
|
|
/*
|
|
* xyc_rqinit: fill out the fields of an I/O request
|
|
*/
|
|
|
|
inline void
|
|
xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp)
|
|
struct xy_iorq *rq;
|
|
struct xyc_softc *xyc;
|
|
struct xy_softc *xy;
|
|
int md;
|
|
u_long blk;
|
|
int cnt;
|
|
caddr_t db;
|
|
struct buf *bp;
|
|
{
|
|
rq->xyc = xyc;
|
|
rq->xy = xy;
|
|
rq->ttl = XYC_MAXTTL + 10;
|
|
rq->mode = md;
|
|
rq->tries = rq->errno = rq->lasterror = 0;
|
|
rq->blockno = blk;
|
|
rq->sectcnt = cnt;
|
|
rq->dbuf = rq->dbufbase = db;
|
|
rq->buf = bp;
|
|
}
|
|
|
|
/*
|
|
* xyc_rqtopb: load up an IOPB based on an iorq
|
|
*/
|
|
|
|
void
|
|
xyc_rqtopb(iorq, iopb, cmd, subfun)
|
|
struct xy_iorq *iorq;
|
|
struct xy_iopb *iopb;
|
|
int cmd, subfun;
|
|
|
|
{
|
|
u_long block, dp;
|
|
|
|
/* normal IOPB case, standard stuff */
|
|
|
|
/* chain bit handled later */
|
|
iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1;
|
|
iopb->com = cmd;
|
|
iopb->errno = 0;
|
|
iopb->errs = 0;
|
|
iopb->done = 0;
|
|
if (iorq->xy) {
|
|
iopb->unit = iorq->xy->xy_drive;
|
|
iopb->dt = iorq->xy->drive_type;
|
|
} else {
|
|
iopb->unit = 0;
|
|
iopb->dt = 0;
|
|
}
|
|
block = iorq->blockno;
|
|
if (iorq->xy == NULL || block == 0) {
|
|
iopb->sect = iopb->head = iopb->cyl = 0;
|
|
} else {
|
|
iopb->sect = block % iorq->xy->nsect;
|
|
block = block / iorq->xy->nsect;
|
|
iopb->head = block % iorq->xy->nhead;
|
|
block = block / iorq->xy->nhead;
|
|
iopb->cyl = block;
|
|
}
|
|
iopb->scnt = iorq->sectcnt;
|
|
if (iorq->dbuf == NULL) {
|
|
iopb->dataa = 0;
|
|
iopb->datar = 0;
|
|
} else {
|
|
dp = dvma_kvtopa((long)iorq->dbuf, BUS_VME16);
|
|
iopb->dataa = (dp & 0xffff);
|
|
iopb->datar = ((dp & 0xff0000) >> 16);
|
|
}
|
|
iopb->subfn = subfun;
|
|
}
|
|
|
|
|
|
/*
|
|
* xyc_unbusy: wait for the xyc to go unbusy, or timeout.
|
|
*/
|
|
|
|
int
|
|
xyc_unbusy(xyc, del)
|
|
|
|
struct xyc *xyc;
|
|
int del;
|
|
|
|
{
|
|
while (del-- > 0) {
|
|
if ((xyc->xyc_csr & XYC_GBSY) == 0)
|
|
break;
|
|
DELAY(1);
|
|
}
|
|
return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK);
|
|
}
|
|
|
|
/*
|
|
* xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error.
|
|
* note that NORM requests are handled seperately.
|
|
*/
|
|
int
|
|
xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode)
|
|
struct xyc_softc *xycsc;
|
|
int cmd, subfn, unit, block, scnt;
|
|
char *dptr;
|
|
int fullmode;
|
|
|
|
{
|
|
int submode = XY_STATE(fullmode), retry;
|
|
u_long dp;
|
|
struct xy_iorq *iorq = xycsc->ciorq;
|
|
struct xy_iopb *iopb = xycsc->ciopb;
|
|
|
|
/*
|
|
* is someone else using the control iopq wait for it if we can
|
|
*/
|
|
start:
|
|
if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) {
|
|
if (tsleep(iorq, PRIBIO, "xyc_cmd", 0))
|
|
return(XY_ERR_FAIL);
|
|
goto start;
|
|
}
|
|
|
|
if (XY_STATE(iorq->mode) != XY_SUB_FREE) {
|
|
DELAY(1000000); /* XY_SUB_POLL: steal the iorq */
|
|
iorq->mode = XY_SUB_FREE;
|
|
printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname);
|
|
}
|
|
|
|
/* init iorq/iopb */
|
|
|
|
xyc_rqinit(iorq, xycsc,
|
|
(unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit],
|
|
fullmode, block, scnt, dptr, NULL);
|
|
|
|
/* load IOPB from iorq */
|
|
|
|
xyc_rqtopb(iorq, iopb, cmd, subfn);
|
|
|
|
/* submit it for processing */
|
|
|
|
xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */
|
|
|
|
return(XY_ERR_AOK);
|
|
}
|
|
|
|
/*
|
|
* xyc_startbuf
|
|
* start a buffer for running
|
|
*/
|
|
|
|
int
|
|
xyc_startbuf(xycsc, xysc, bp)
|
|
struct xyc_softc *xycsc;
|
|
struct xy_softc *xysc;
|
|
struct buf *bp;
|
|
|
|
{
|
|
int partno;
|
|
struct xy_iorq *iorq;
|
|
struct xy_iopb *iopb;
|
|
u_long block, dp;
|
|
caddr_t dbuf;
|
|
|
|
iorq = xysc->xyrq;
|
|
iopb = iorq->iopb;
|
|
|
|
/* get buf */
|
|
|
|
if (bp == NULL)
|
|
panic("xyc_startbuf null buf");
|
|
|
|
partno = DISKPART(bp->b_dev);
|
|
#ifdef XYC_DEBUG
|
|
printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname,
|
|
'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno);
|
|
printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n",
|
|
bp->b_bcount, bp->b_data);
|
|
#endif
|
|
|
|
/*
|
|
* load request. we have to calculate the correct block number based
|
|
* on partition info.
|
|
*
|
|
* also, note that there are two kinds of buf structures, those with
|
|
* B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is
|
|
* a raw I/O (to a cdevsw) and we are doing I/O directly to the users'
|
|
* buffer which has already been mapped into DVMA space. (Not on sun3)
|
|
* However, if B_PHYS is not set, then the buffer is a normal system
|
|
* buffer which does *not* live in DVMA space. In that case we call
|
|
* dvma_mapin to map it into DVMA space so we can do the DMA to it.
|
|
*
|
|
* in cases where we do a dvma_mapin, note that iorq points to the buffer
|
|
* as mapped into DVMA space, where as the bp->b_data points to its
|
|
* non-DVMA mapping.
|
|
*
|
|
* XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped
|
|
* into dvma space, only that it was remapped into the kernel.
|
|
* We ALWAYS have to remap the kernel buf into DVMA space.
|
|
* (It is done inexpensively, using whole segments!)
|
|
*/
|
|
|
|
block = bp->b_blkno + ((partno == RAW_PART) ? 0 :
|
|
xysc->sc_dk.dk_label->d_partitions[partno].p_offset);
|
|
|
|
dbuf = dvma_mapin(bp->b_data, bp->b_bcount);
|
|
if (dbuf == NULL) { /* out of DVMA space */
|
|
printf("%s: warning: out of DVMA space\n",
|
|
xycsc->sc_dev.dv_xname);
|
|
return (XY_ERR_FAIL); /* XXX: need some sort of
|
|
* call-back scheme here? */
|
|
}
|
|
|
|
/* init iorq and load iopb from it */
|
|
|
|
xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block,
|
|
bp->b_bcount / XYFM_BPS, dbuf, bp);
|
|
|
|
xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0);
|
|
|
|
/* Instrumentation. */
|
|
disk_busy(&xysc->sc_dk);
|
|
|
|
return (XY_ERR_AOK);
|
|
}
|
|
|
|
|
|
/*
|
|
* xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK
|
|
* if ok. if it fail returns an error code. type is XY_SUB_*.
|
|
*
|
|
* note: caller frees iorq in all cases except NORM
|
|
*
|
|
* return value:
|
|
* NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request)
|
|
* WAIT: XY_AOK (success), <error-code> (failed)
|
|
* POLL: <same as WAIT>
|
|
* NOQ : <same as NORM>
|
|
*
|
|
* there are three sources for i/o requests:
|
|
* [1] xystrategy: normal block I/O, using "struct buf" system.
|
|
* [2] autoconfig/crash dump: these are polled I/O requests, no interrupts.
|
|
* [3] open/ioctl: these are I/O requests done in the context of a process,
|
|
* and the process should block until they are done.
|
|
*
|
|
* software state is stored in the iorq structure. each iorq has an
|
|
* iopb structure. the hardware understands the iopb structure.
|
|
* every command must go through an iopb. a 450 handles one iopb at a
|
|
* time, where as a 451 can take them in chains. [the 450 claims it
|
|
* can handle chains, but is appears to be buggy...] iopb are allocated
|
|
* in DVMA space at boot up time. each disk gets one iopb, and the
|
|
* controller gets one (for POLL and WAIT commands). what happens if
|
|
* the iopb is busy? for i/o type [1], the buffers are queued at the
|
|
* "buff" layer and * picked up later by the interrupt routine. for case
|
|
* [2] we can only be blocked if there is a WAIT type I/O request being
|
|
* run. since this can only happen when we are crashing, we wait a sec
|
|
* and then steal the IOPB. for case [3] the process can sleep
|
|
* on the iorq free list until some iopbs are avaliable.
|
|
*/
|
|
|
|
|
|
int
|
|
xyc_submit_iorq(xycsc, iorq, type)
|
|
struct xyc_softc *xycsc;
|
|
struct xy_iorq *iorq;
|
|
int type;
|
|
|
|
{
|
|
struct xy_iopb *iopb;
|
|
u_long iopbaddr;
|
|
|
|
#ifdef XYC_DEBUG
|
|
printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n",
|
|
xycsc->sc_dev.dv_xname, iorq, type);
|
|
#endif
|
|
|
|
/* first check and see if controller is busy */
|
|
if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) {
|
|
#ifdef XYC_DEBUG
|
|
printf("xyc_submit_iorq: XYC not ready (BUSY)\n");
|
|
#endif
|
|
if (type == XY_SUB_NOQ)
|
|
return (XY_ERR_FAIL); /* failed */
|
|
switch (type) {
|
|
case XY_SUB_NORM:
|
|
return XY_ERR_AOK; /* success */
|
|
case XY_SUB_WAIT:
|
|
while (iorq->iopb->done == 0) {
|
|
sleep(iorq, PRIBIO);
|
|
}
|
|
return (iorq->errno);
|
|
case XY_SUB_POLL: /* steal controller */
|
|
iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */
|
|
if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL)
|
|
panic("xyc_submit_iorq: stuck xyc");
|
|
printf("%s: stole controller\n",
|
|
xycsc->sc_dev.dv_xname);
|
|
break;
|
|
default:
|
|
panic("xyc_submit_iorq adding");
|
|
}
|
|
}
|
|
|
|
iopb = xyc_chain(xycsc, iorq); /* build chain */
|
|
if (iopb == NULL) { /* nothing doing? */
|
|
if (type == XY_SUB_NORM || type == XY_SUB_NOQ)
|
|
return(XY_ERR_AOK);
|
|
panic("xyc_submit_iorq: xyc_chain failed!\n");
|
|
}
|
|
iopbaddr = dvma_kvtopa((long) iopb, BUS_VME16);
|
|
|
|
XYC_GO(xycsc->xyc, iopbaddr);
|
|
|
|
/* command now running, wrap it up */
|
|
switch (type) {
|
|
case XY_SUB_NORM:
|
|
case XY_SUB_NOQ:
|
|
return (XY_ERR_AOK); /* success */
|
|
case XY_SUB_WAIT:
|
|
while (iorq->iopb->done == 0) {
|
|
sleep(iorq, PRIBIO);
|
|
}
|
|
return (iorq->errno);
|
|
case XY_SUB_POLL:
|
|
return (xyc_piodriver(xycsc, iorq));
|
|
default:
|
|
panic("xyc_submit_iorq wrap up");
|
|
}
|
|
panic("xyc_submit_iorq");
|
|
return 0; /* not reached */
|
|
}
|
|
|
|
|
|
/*
|
|
* xyc_chain: build a chain. return dvma address of first element in
|
|
* the chain. iorq != NULL: means we only want that item on the chain.
|
|
*/
|
|
|
|
struct xy_iopb *
|
|
xyc_chain(xycsc, iorq)
|
|
|
|
struct xyc_softc *xycsc;
|
|
struct xy_iorq *iorq;
|
|
|
|
{
|
|
int togo, chain, hand;
|
|
struct xy_iopb *iopb, *prev_iopb;
|
|
bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain));
|
|
|
|
/*
|
|
* promote control IOPB to the top
|
|
*/
|
|
if (iorq == NULL) {
|
|
if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL ||
|
|
XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) &&
|
|
xycsc->iopbase[XYC_CTLIOPB].done == 0)
|
|
iorq = &xycsc->reqs[XYC_CTLIOPB];
|
|
}
|
|
/*
|
|
* special case: if iorq != NULL then we have a POLL or WAIT request.
|
|
* we let these take priority and do them first.
|
|
*/
|
|
if (iorq) {
|
|
xycsc->xy_chain[0] = iorq;
|
|
iorq->iopb->chen = 0;
|
|
return(iorq->iopb);
|
|
}
|
|
|
|
/*
|
|
* NORM case: do round robin and maybe chain (if allowed and possible)
|
|
*/
|
|
|
|
chain = 0;
|
|
hand = xycsc->xy_hand;
|
|
xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB;
|
|
|
|
for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){
|
|
|
|
if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM ||
|
|
xycsc->iopbase[hand].done)
|
|
continue; /* not ready-for-i/o */
|
|
|
|
xycsc->xy_chain[chain] = &xycsc->reqs[hand];
|
|
iopb = xycsc->xy_chain[chain]->iopb;
|
|
iopb->chen = 0;
|
|
if (chain != 0) { /* adding a link to a chain? */
|
|
prev_iopb = xycsc->xy_chain[chain-1]->iopb;
|
|
prev_iopb->chen = 1;
|
|
prev_iopb->nxtiopb = 0xffff &
|
|
dvma_kvtopa((long) iopb, BUS_VME16);
|
|
} else { /* head of chain */
|
|
iorq = xycsc->xy_chain[chain];
|
|
}
|
|
chain++;
|
|
if (xycsc->no_ols) break; /* quit if chaining dis-allowed */
|
|
}
|
|
return(iorq ? iorq->iopb : NULL);
|
|
}
|
|
|
|
/*
|
|
* xyc_piodriver
|
|
*
|
|
* programmed i/o driver. this function takes over the computer
|
|
* and drains off the polled i/o request. it returns the status of the iorq
|
|
* the caller is interesting in.
|
|
*/
|
|
int
|
|
xyc_piodriver(xycsc, iorq)
|
|
struct xyc_softc *xycsc;
|
|
struct xy_iorq *iorq;
|
|
|
|
{
|
|
int nreset = 0;
|
|
int retval = 0;
|
|
u_long res;
|
|
struct xyc *xyc = xycsc->xyc;
|
|
#ifdef XYC_DEBUG
|
|
printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq);
|
|
#endif
|
|
|
|
while (iorq->iopb->done == 0) {
|
|
|
|
res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME);
|
|
|
|
/* we expect some progress soon */
|
|
if (res == XY_ERR_FAIL && nreset >= 2) {
|
|
xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0);
|
|
#ifdef XYC_DEBUG
|
|
printf("xyc_piodriver: timeout\n");
|
|
#endif
|
|
return (XY_ERR_FAIL);
|
|
}
|
|
if (res == XY_ERR_FAIL) {
|
|
if (xyc_reset(xycsc, 0,
|
|
(nreset++ == 0) ? XY_RSET_NONE : iorq,
|
|
XY_ERR_FAIL,
|
|
0) == XY_ERR_FAIL)
|
|
return (XY_ERR_FAIL); /* flushes all but POLL
|
|
* requests, resets */
|
|
continue;
|
|
}
|
|
|
|
xyc_remove_iorq(xycsc); /* may resubmit request */
|
|
|
|
if (iorq->iopb->done == 0)
|
|
xyc_start(xycsc, iorq);
|
|
}
|
|
|
|
/* get return value */
|
|
|
|
retval = iorq->errno;
|
|
|
|
#ifdef XYC_DEBUG
|
|
printf("xyc_piodriver: done, retval = 0x%x (%s)\n",
|
|
iorq->errno, xyc_e2str(iorq->errno));
|
|
#endif
|
|
|
|
/* start up any bufs that have queued */
|
|
|
|
xyc_start(xycsc, NULL);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/*
|
|
* xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset.
|
|
* we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done.
|
|
*/
|
|
int
|
|
xyc_xyreset(xycsc, xysc)
|
|
struct xyc_softc *xycsc;
|
|
struct xy_softc *xysc;
|
|
|
|
{
|
|
struct xy_iopb tmpiopb;
|
|
u_long addr;
|
|
int del;
|
|
bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb));
|
|
xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0;
|
|
xycsc->ciopb->ien = 0;
|
|
xycsc->ciopb->com = XYCMD_RST;
|
|
xycsc->ciopb->unit = xysc->xy_drive;
|
|
addr = dvma_kvtopa((long) xycsc->ciopb, BUS_VME16);
|
|
|
|
XYC_GO(xycsc->xyc, addr);
|
|
|
|
del = XYC_RESETUSEC;
|
|
while (del > 0) {
|
|
if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break;
|
|
DELAY(1);
|
|
del--;
|
|
}
|
|
|
|
if (del <= 0 || xycsc->ciopb->errs) {
|
|
printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname,
|
|
xyc_e2str(xycsc->ciopb->errno));
|
|
del = xycsc->xyc->xyc_rsetup;
|
|
if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL)
|
|
panic("xyc_reset");
|
|
} else {
|
|
xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */
|
|
}
|
|
bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb));
|
|
}
|
|
|
|
|
|
/*
|
|
* xyc_reset: reset everything: requests are marked as errors except
|
|
* a polled request (which is resubmitted)
|
|
*/
|
|
int
|
|
xyc_reset(xycsc, quiet, blastmode, error, xysc)
|
|
struct xyc_softc *xycsc;
|
|
int quiet, error;
|
|
struct xy_iorq *blastmode;
|
|
struct xy_softc *xysc;
|
|
|
|
{
|
|
int del = 0, lcv, poll = -1, retval = XY_ERR_AOK;
|
|
struct xy_iorq *iorq;
|
|
|
|
/* soft reset hardware */
|
|
|
|
if (!quiet)
|
|
printf("%s: soft reset\n", xycsc->sc_dev.dv_xname);
|
|
del = xycsc->xyc->xyc_rsetup;
|
|
del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC);
|
|
if (del == XY_ERR_FAIL) {
|
|
blastmode = XY_RSET_ALL; /* dead, flush all requests */
|
|
retval = XY_ERR_FAIL;
|
|
}
|
|
if (xysc)
|
|
xyc_xyreset(xycsc, xysc);
|
|
|
|
/* fix queues based on "blast-mode" */
|
|
|
|
for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) {
|
|
iorq = &xycsc->reqs[lcv];
|
|
|
|
if (XY_STATE(iorq->mode) != XY_SUB_POLL &&
|
|
XY_STATE(iorq->mode) != XY_SUB_WAIT &&
|
|
XY_STATE(iorq->mode) != XY_SUB_NORM)
|
|
/* is it active? */
|
|
continue;
|
|
|
|
if (blastmode == XY_RSET_ALL ||
|
|
blastmode != iorq) {
|
|
/* failed */
|
|
iorq->errno = error;
|
|
xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1;
|
|
switch (XY_STATE(iorq->mode)) {
|
|
case XY_SUB_NORM:
|
|
iorq->buf->b_error = EIO;
|
|
iorq->buf->b_flags |= B_ERROR;
|
|
iorq->buf->b_resid =
|
|
iorq->sectcnt * XYFM_BPS;
|
|
/* Sun3: map/unmap regardless of B_PHYS */
|
|
dvma_mapout(iorq->dbufbase,
|
|
iorq->buf->b_bcount);
|
|
iorq->xy->xyq.b_actf =
|
|
iorq->buf->b_actf;
|
|
disk_unbusy(&iorq->xy->sc_dk,
|
|
(iorq->buf->b_bcount -
|
|
iorq->buf->b_resid));
|
|
biodone(iorq->buf);
|
|
iorq->mode = XY_SUB_FREE;
|
|
break;
|
|
case XY_SUB_WAIT:
|
|
wakeup(iorq);
|
|
case XY_SUB_POLL:
|
|
iorq->mode =
|
|
XY_NEWSTATE(iorq->mode, XY_SUB_DONE);
|
|
break;
|
|
}
|
|
|
|
} else {
|
|
|
|
/* resubmit, no need to do anything here */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* now, if stuff is waiting, start it.
|
|
* since we just reset it should go
|
|
*/
|
|
xyc_start(xycsc, NULL);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/*
|
|
* xyc_start: start waiting buffers
|
|
*/
|
|
|
|
int
|
|
xyc_start(xycsc, iorq)
|
|
struct xyc_softc *xycsc;
|
|
struct xy_iorq *iorq;
|
|
|
|
{
|
|
int lcv;
|
|
struct xy_softc *xy;
|
|
|
|
if (iorq == NULL) {
|
|
for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) {
|
|
if ((xy = xycsc->sc_drives[lcv]) == NULL) continue;
|
|
if (xy->xyq.b_actf == NULL) continue;
|
|
if (xy->xyrq->mode != XY_SUB_FREE) continue;
|
|
xyc_startbuf(xycsc, xy, xy->xyq.b_actf);
|
|
}
|
|
}
|
|
xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ);
|
|
}
|
|
|
|
/*
|
|
* xyc_remove_iorq: remove "done" IOPB's.
|
|
*/
|
|
|
|
int
|
|
xyc_remove_iorq(xycsc)
|
|
struct xyc_softc *xycsc;
|
|
|
|
{
|
|
int errno, rq, comm, errs;
|
|
struct xyc *xyc = xycsc->xyc;
|
|
u_long addr;
|
|
struct xy_iopb *iopb;
|
|
struct xy_iorq *iorq;
|
|
struct buf *bp;
|
|
|
|
if (xyc->xyc_csr & XYC_DERR) {
|
|
/*
|
|
* DOUBLE ERROR: should never happen under normal use. This
|
|
* error is so bad, you can't even tell which IOPB is bad, so
|
|
* we dump them all.
|
|
*/
|
|
errno = XY_ERR_DERR;
|
|
printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname);
|
|
if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) {
|
|
printf("%s: soft reset failed!\n",
|
|
xycsc->sc_dev.dv_xname);
|
|
panic("xyc_remove_iorq: controller DEAD");
|
|
}
|
|
return (XY_ERR_AOK);
|
|
}
|
|
|
|
/*
|
|
* get iopb that is done, loop down the chain
|
|
*/
|
|
|
|
if (xyc->xyc_csr & XYC_ERR) {
|
|
xyc->xyc_csr = XYC_ERR; /* clear error condition */
|
|
}
|
|
if (xyc->xyc_csr & XYC_IPND) {
|
|
xyc->xyc_csr = XYC_IPND; /* clear interrupt */
|
|
}
|
|
|
|
for (rq = 0; rq < XYC_MAXIOPB; rq++) {
|
|
iorq = xycsc->xy_chain[rq];
|
|
if (iorq == NULL) break; /* done ! */
|
|
if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE)
|
|
continue; /* free, or done */
|
|
iopb = iorq->iopb;
|
|
if (iopb->done == 0)
|
|
continue; /* not done yet */
|
|
|
|
comm = iopb->com;
|
|
errs = iopb->errs;
|
|
|
|
if (errs)
|
|
iorq->errno = iopb->errno;
|
|
else
|
|
iorq->errno = 0;
|
|
|
|
/* handle non-fatal errors */
|
|
|
|
if (errs &&
|
|
xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK)
|
|
continue; /* AOK: we resubmitted it */
|
|
|
|
|
|
/* this iorq is now done (hasn't been restarted or anything) */
|
|
|
|
if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror)
|
|
xyc_perror(iorq, iopb, 0);
|
|
|
|
/* now, if read/write check to make sure we got all the data
|
|
* we needed. (this may not be the case if we got an error in
|
|
* the middle of a multisector request). */
|
|
|
|
if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 &&
|
|
(comm == XYCMD_RD || comm == XYCMD_WR)) {
|
|
/* we just successfully processed a bad144 sector
|
|
* note: if we are in bad 144 mode, the pointers have
|
|
* been advanced already (see above) and are pointing
|
|
* at the bad144 sector. to exit bad144 mode, we
|
|
* must advance the pointers 1 sector and issue a new
|
|
* request if there are still sectors left to process
|
|
*
|
|
*/
|
|
XYC_ADVANCE(iorq, 1); /* advance 1 sector */
|
|
|
|
/* exit b144 mode */
|
|
iorq->mode = iorq->mode & (~XY_MODE_B144);
|
|
|
|
if (iorq->sectcnt) { /* more to go! */
|
|
iorq->lasterror = iorq->errno = iopb->errno = 0;
|
|
iopb->errs = iopb->done = 0;
|
|
iorq->tries = 0;
|
|
iopb->scnt = iorq->sectcnt;
|
|
iopb->cyl = iorq->blockno /
|
|
iorq->xy->sectpercyl;
|
|
iopb->head =
|
|
(iorq->blockno / iorq->xy->nhead) %
|
|
iorq->xy->nhead;
|
|
iopb->sect = iorq->blockno % XYFM_BPS;
|
|
addr = dvma_kvtopa((long) iorq->dbuf, BUS_VME16);
|
|
iopb->dataa = (addr & 0xffff);
|
|
iopb->datar = ((addr & 0xff0000) >> 16);
|
|
/* will resubit at end */
|
|
continue;
|
|
}
|
|
}
|
|
/* final cleanup, totally done with this request */
|
|
|
|
switch (XY_STATE(iorq->mode)) {
|
|
case XY_SUB_NORM:
|
|
bp = iorq->buf;
|
|
if (errs) {
|
|
bp->b_error = EIO;
|
|
bp->b_flags |= B_ERROR;
|
|
bp->b_resid = iorq->sectcnt * XYFM_BPS;
|
|
} else {
|
|
bp->b_resid = 0; /* done */
|
|
}
|
|
/* Sun3: map/unmap regardless of B_PHYS */
|
|
dvma_mapout(iorq->dbufbase,
|
|
iorq->buf->b_bcount);
|
|
iorq->xy->xyq.b_actf = bp->b_actf;
|
|
disk_unbusy(&iorq->xy->sc_dk,
|
|
(bp->b_bcount - bp->b_resid));
|
|
biodone(bp);
|
|
iorq->mode = XY_SUB_FREE;
|
|
break;
|
|
case XY_SUB_WAIT:
|
|
iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE);
|
|
wakeup(iorq);
|
|
break;
|
|
case XY_SUB_POLL:
|
|
iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (XY_ERR_AOK);
|
|
}
|
|
|
|
/*
|
|
* xyc_perror: print error.
|
|
* - if still_trying is true: we got an error, retried and got a
|
|
* different error. in that case lasterror is the old error,
|
|
* and errno is the new one.
|
|
* - if still_trying is not true, then if we ever had an error it
|
|
* is in lasterror. also, if iorq->errno == 0, then we recovered
|
|
* from that error (otherwise iorq->errno == iorq->lasterror).
|
|
*/
|
|
void
|
|
xyc_perror(iorq, iopb, still_trying)
|
|
struct xy_iorq *iorq;
|
|
struct xy_iopb *iopb;
|
|
int still_trying;
|
|
|
|
{
|
|
|
|
int error = iorq->lasterror;
|
|
|
|
printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname
|
|
: iorq->xyc->sc_dev.dv_xname);
|
|
if (iorq->buf)
|
|
printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev));
|
|
if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR)
|
|
printf("%s %d/%d/%d: ",
|
|
(iopb->com == XYCMD_RD) ? "read" : "write",
|
|
iopb->cyl, iopb->head, iopb->sect);
|
|
printf("%s", xyc_e2str(error));
|
|
|
|
if (still_trying)
|
|
printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno));
|
|
else
|
|
if (iorq->errno == 0)
|
|
printf(" [recovered in %d tries]", iorq->tries);
|
|
|
|
printf("\n");
|
|
}
|
|
|
|
/*
|
|
* xyc_error: non-fatal error encountered... recover.
|
|
* return AOK if resubmitted, return FAIL if this iopb is done
|
|
*/
|
|
int
|
|
xyc_error(xycsc, iorq, iopb, comm)
|
|
struct xyc_softc *xycsc;
|
|
struct xy_iorq *iorq;
|
|
struct xy_iopb *iopb;
|
|
int comm;
|
|
|
|
{
|
|
int errno = iorq->errno;
|
|
int erract = xyc_entoact(errno);
|
|
int oldmode, advance, i;
|
|
|
|
if (erract == XY_ERA_RSET) { /* some errors require a reset */
|
|
oldmode = iorq->mode;
|
|
iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode);
|
|
/* make xyc_start ignore us */
|
|
xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy);
|
|
iorq->mode = oldmode;
|
|
}
|
|
/* check for read/write to a sector in bad144 table if bad: redirect
|
|
* request to bad144 area */
|
|
|
|
if ((comm == XYCMD_RD || comm == XYCMD_WR) &&
|
|
(iorq->mode & XY_MODE_B144) == 0) {
|
|
advance = iorq->sectcnt - iopb->scnt;
|
|
XYC_ADVANCE(iorq, advance);
|
|
if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl,
|
|
(iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead,
|
|
iorq->blockno % iorq->xy->nsect)) != -1) {
|
|
iorq->mode |= XY_MODE_B144; /* enter bad144 mode &
|
|
* redirect */
|
|
iopb->errno = iopb->done = iopb->errs = 0;
|
|
iopb->scnt = 1;
|
|
iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2;
|
|
/* second to last acyl */
|
|
i = iorq->xy->sectpercyl - 1 - i; /* follow bad144
|
|
* standard */
|
|
iopb->head = i / iorq->xy->nhead;
|
|
iopb->sect = i % iorq->xy->nhead;
|
|
/* will resubmit when we come out of remove_iorq */
|
|
return (XY_ERR_AOK); /* recovered! */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* it isn't a bad144 sector, must be real error! see if we can retry
|
|
* it?
|
|
*/
|
|
if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror)
|
|
xyc_perror(iorq, iopb, 1); /* inform of error state
|
|
* change */
|
|
iorq->lasterror = errno;
|
|
|
|
if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD)
|
|
&& iorq->tries < XYC_MAXTRIES) { /* retry? */
|
|
iorq->tries++;
|
|
iorq->errno = iopb->errno = iopb->done = iopb->errs = 0;
|
|
/* will resubmit at end of remove_iorq */
|
|
return (XY_ERR_AOK); /* recovered! */
|
|
}
|
|
|
|
/* failed to recover from this error */
|
|
return (XY_ERR_FAIL);
|
|
}
|
|
|
|
/*
|
|
* xyc_tick: make sure xy is still alive and ticking (err, kicking).
|
|
*/
|
|
void
|
|
xyc_tick(arg)
|
|
void *arg;
|
|
|
|
{
|
|
struct xyc_softc *xycsc = arg;
|
|
int lcv, s, reset = 0;
|
|
|
|
/* reduce ttl for each request if one goes to zero, reset xyc */
|
|
s = splbio();
|
|
for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) {
|
|
if (xycsc->reqs[lcv].mode == 0 ||
|
|
XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE)
|
|
continue;
|
|
xycsc->reqs[lcv].ttl--;
|
|
if (xycsc->reqs[lcv].ttl == 0)
|
|
reset = 1;
|
|
}
|
|
if (reset) {
|
|
printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname);
|
|
xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL);
|
|
}
|
|
splx(s);
|
|
|
|
/* until next time */
|
|
|
|
timeout(xyc_tick, xycsc, XYC_TICKCNT);
|
|
}
|
|
|
|
/*
|
|
* xyc_ioctlcmd: this function provides a user level interface to the
|
|
* controller via ioctl. this allows "format" programs to be written
|
|
* in user code, and is also useful for some debugging. we return
|
|
* an error code. called at user priority.
|
|
*
|
|
* XXX missing a few commands (see the 7053 driver for ideas)
|
|
*/
|
|
int
|
|
xyc_ioctlcmd(xy, dev, xio)
|
|
struct xy_softc *xy;
|
|
dev_t dev;
|
|
struct xd_iocmd *xio;
|
|
|
|
{
|
|
int s, err, rqno, dummy;
|
|
caddr_t dvmabuf = NULL;
|
|
struct xyc_softc *xycsc;
|
|
|
|
/* check sanity of requested command */
|
|
|
|
switch (xio->cmd) {
|
|
|
|
case XYCMD_NOP: /* no op: everything should be zero */
|
|
if (xio->subfn || xio->dptr || xio->dlen ||
|
|
xio->block || xio->sectcnt)
|
|
return (EINVAL);
|
|
break;
|
|
|
|
case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */
|
|
case XYCMD_WR:
|
|
if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS ||
|
|
xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL)
|
|
return (EINVAL);
|
|
break;
|
|
|
|
case XYCMD_SK: /* seek: doesn't seem useful to export this */
|
|
return (EINVAL);
|
|
|
|
break;
|
|
|
|
default:
|
|
return (EINVAL);/* ??? */
|
|
}
|
|
|
|
/* create DVMA buffer for request if needed */
|
|
|
|
if (xio->dlen) {
|
|
dvmabuf = dvma_malloc(xio->dlen);
|
|
if (xio->cmd == XYCMD_WR) {
|
|
if (err = copyin(xio->dptr, dvmabuf, xio->dlen)) {
|
|
dvma_free(dvmabuf, xio->dlen);
|
|
return (err);
|
|
}
|
|
}
|
|
}
|
|
/* do it! */
|
|
|
|
err = 0;
|
|
xycsc = xy->parent;
|
|
s = splbio();
|
|
rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block,
|
|
xio->sectcnt, dvmabuf, XY_SUB_WAIT);
|
|
if (rqno == XY_ERR_FAIL) {
|
|
err = EIO;
|
|
goto done;
|
|
}
|
|
xio->errno = xycsc->ciorq->errno;
|
|
xio->tries = xycsc->ciorq->tries;
|
|
XYC_DONE(xycsc, dummy);
|
|
|
|
if (xio->cmd == XYCMD_RD)
|
|
err = copyout(dvmabuf, xio->dptr, xio->dlen);
|
|
|
|
done:
|
|
splx(s);
|
|
if (dvmabuf)
|
|
dvma_free(dvmabuf, xio->dlen);
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* xyc_e2str: convert error code number into an error string
|
|
*/
|
|
char *
|
|
xyc_e2str(no)
|
|
int no;
|
|
{
|
|
switch (no) {
|
|
case XY_ERR_FAIL:
|
|
return ("Software fatal error");
|
|
case XY_ERR_DERR:
|
|
return ("DOUBLE ERROR");
|
|
case XY_ERR_AOK:
|
|
return ("Successful completion");
|
|
case XY_ERR_IPEN:
|
|
return("Interrupt pending");
|
|
case XY_ERR_BCFL:
|
|
return("Busy conflict");
|
|
case XY_ERR_TIMO:
|
|
return("Operation timeout");
|
|
case XY_ERR_NHDR:
|
|
return("Header not found");
|
|
case XY_ERR_HARD:
|
|
return("Hard ECC error");
|
|
case XY_ERR_ICYL:
|
|
return("Illegal cylinder address");
|
|
case XY_ERR_ISEC:
|
|
return("Illegal sector address");
|
|
case XY_ERR_SMAL:
|
|
return("Last sector too small");
|
|
case XY_ERR_SACK:
|
|
return("Slave ACK error (non-existent memory)");
|
|
case XY_ERR_CHER:
|
|
return("Cylinder and head/header error");
|
|
case XY_ERR_SRTR:
|
|
return("Auto-seek retry successful");
|
|
case XY_ERR_WPRO:
|
|
return("Write-protect error");
|
|
case XY_ERR_UIMP:
|
|
return("Unimplemented command");
|
|
case XY_ERR_DNRY:
|
|
return("Drive not ready");
|
|
case XY_ERR_SZER:
|
|
return("Sector count zero");
|
|
case XY_ERR_DFLT:
|
|
return("Drive faulted");
|
|
case XY_ERR_ISSZ:
|
|
return("Illegal sector size");
|
|
case XY_ERR_SLTA:
|
|
return("Self test A");
|
|
case XY_ERR_SLTB:
|
|
return("Self test B");
|
|
case XY_ERR_SLTC:
|
|
return("Self test C");
|
|
case XY_ERR_SOFT:
|
|
return("Soft ECC error");
|
|
case XY_ERR_SFOK:
|
|
return("Soft ECC error recovered");
|
|
case XY_ERR_IHED:
|
|
return("Illegal head");
|
|
case XY_ERR_DSEQ:
|
|
return("Disk sequencer error");
|
|
case XY_ERR_SEEK:
|
|
return("Seek error");
|
|
default:
|
|
return ("Unknown error");
|
|
}
|
|
}
|
|
|
|
int
|
|
xyc_entoact(errno)
|
|
|
|
int errno;
|
|
|
|
{
|
|
switch (errno) {
|
|
case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN:
|
|
case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC:
|
|
case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ:
|
|
case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC:
|
|
case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL:
|
|
|
|
return(XY_ERA_PROG); /* program error ! */
|
|
|
|
case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD:
|
|
case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK:
|
|
case XY_ERR_SOFT:
|
|
|
|
return(XY_ERA_HARD); /* hard error, retry */
|
|
|
|
case XY_ERR_DFLT: case XY_ERR_DSEQ:
|
|
|
|
return(XY_ERA_RSET); /* hard error reset */
|
|
|
|
case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK:
|
|
|
|
return(XY_ERA_SOFT); /* an FYI error */
|
|
|
|
case XY_ERR_WPRO:
|
|
|
|
return(XY_ERA_WPRO); /* write protect */
|
|
}
|
|
|
|
return(XY_ERA_PROG); /* ??? */
|
|
}
|