327 lines
8.9 KiB
C
327 lines
8.9 KiB
C
/* $NetBSD: uba_sbi.c,v 1.3 2000/04/30 11:47:21 ragge Exp $ */
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/*
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* Copyright (c) 1996 Jonathan Stone.
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* Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden.
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* Copyright (c) 1982, 1986 The Regents of the University of California.
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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 the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)uba.c 7.10 (Berkeley) 12/16/90
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* @(#)autoconf.c 7.20 (Berkeley) 5/9/91
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#define _VAX_BUS_DMA_PRIVATE
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#include <machine/bus.h>
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#include <machine/mtpr.h>
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#include <machine/nexus.h>
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#include <machine/cpu.h>
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#include <machine/sgmap.h>
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#include <machine/scb.h>
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#include <dev/qbus/ubavar.h>
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#include <arch/vax/uba/uba_common.h>
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#include "ioconf.h"
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/* Some SBI-specific defines */
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#define UBASIZE (UBAPAGES * VAX_NBPG)
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#define UMEMA8600(i) (0x20100000+(i)*0x40000)
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#define UMEMB8600(i) (0x22100000+(i)*0x40000)
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/*
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* Some status registers.
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*/
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#define UBACNFGR_UBIC 0x00010000 /* unibus init complete */
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#define UBACNFGR_BITS \
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"\40\40PARFLT\37WSQFLT\36URDFLT\35ISQFLT\34MXTFLT\33XMTFLT\30ADPDN\27ADPUP\23UBINIT\22UBPDN\21UBIC"
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#define UBACR_IFS 0x00000040 /* interrupt field switch */
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#define UBACR_BRIE 0x00000020 /* BR interrupt enable */
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#define UBACR_USEFIE 0x00000010 /* UNIBUS to SBI error field IE */
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#define UBACR_SUEFIE 0x00000008 /* SBI to UNIBUS error field IE */
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#define UBACR_ADINIT 0x00000001 /* adapter init */
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#define UBADPR_BNE 0x80000000 /* buffer not empty - purge */
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#define UBABRRVR_DIV 0x0000ffff /* device interrupt vector field */
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#define UBASR_BITS \
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"\20\13RDTO\12RDS\11CRD\10CXTER\7CXTMO\6DPPE\5IVMR\4MRPF\3LEB\2UBSTO\1UBSSYNTO"
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char ubasr_bits[] = UBASR_BITS;
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/*
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* The DW780 are directly connected to the SBI on 11/780 and 8600.
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*/
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static int dw780_match __P((struct device *, struct cfdata *, void *));
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static void dw780_attach __P((struct device *, struct device *, void *));
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static void dw780_init __P((struct uba_softc*));
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static void dw780_beforescan __P((struct uba_softc *));
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static void dw780_afterscan __P((struct uba_softc *));
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static int dw780_errchk __P((struct uba_softc *));
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static void uba_dw780int __P((void *));
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static void ubaerror __P((struct uba_softc *, int *, int *));
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#ifdef notyet
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static void dw780_purge __P((struct uba_softc *, int));
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#endif
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struct cfattach uba_sbi_ca = {
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sizeof(struct uba_vsoftc), dw780_match, dw780_attach
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};
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extern struct vax_bus_space vax_mem_bus_space;
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volatile int svec;
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int
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dw780_match(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 sbi_attach_args *sa = (struct sbi_attach_args *)aux;
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if ((cf->cf_loc[0] != sa->nexnum) && (cf->cf_loc[0] > -1 ))
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return 0;
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/*
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* The uba type is actually only telling where the uba
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* space is in nexus space.
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*/
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if ((sa->type & ~3) != NEX_UBA0)
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return 0;
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return 1;
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}
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void
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dw780_attach(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 uba_vsoftc *sc = (void *)self;
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struct sbi_attach_args *sa = aux;
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int ubaddr = sa->type & 3;
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int i;
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printf(": DW780\n");
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/*
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* Fill in bus specific data.
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*/
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sc->uv_sc.uh_ubainit = dw780_init;
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#ifdef notyet
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sc->uv_sc.uh_ubapurge = dw780_purge;
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#endif
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sc->uv_sc.uh_beforescan = dw780_beforescan;
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sc->uv_sc.uh_afterscan = dw780_afterscan;
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sc->uv_sc.uh_errchk = dw780_errchk;
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sc->uv_sc.uh_iot = &vax_mem_bus_space;
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sc->uv_sc.uh_dmat = &sc->uv_dmat;
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sc->uv_uba = (void *)sa->nexaddr;
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sc->uh_ibase = VAX_NBPG + ubaddr * VAX_NBPG;
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/*
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* Set up dispatch vectors for DW780.
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*/
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for (i = 0; i < 4; i++)
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scb_vecalloc(256 + i * 64 + sa->nexnum * 4, uba_dw780int,
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sc, SCB_ISTACK);
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/*
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* Fill in variables used by the sgmap system.
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*/
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sc->uv_size = UBASIZE; /* Size in bytes of Qbus space */
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sc->uv_addr = (paddr_t)sc->uv_uba->uba_map;
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uba_dma_init(sc);
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uba_attach(&sc->uv_sc, (parent->dv_unit ? UMEMB8600(ubaddr) :
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UMEMA8600(ubaddr)) + (UBAPAGES * VAX_NBPG));
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}
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void
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dw780_beforescan(sc)
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struct uba_softc *sc;
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{
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struct uba_vsoftc *vc = (void *)sc;
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volatile int *hej = &vc->uv_uba->uba_sr;
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*hej = *hej;
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vc->uv_uba->uba_cr = UBACR_IFS|UBACR_BRIE;
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}
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void
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dw780_afterscan(sc)
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struct uba_softc *sc;
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{
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struct uba_vsoftc *vc = (void *)sc;
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vc->uv_uba->uba_cr = UBACR_IFS | UBACR_BRIE |
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UBACR_USEFIE | UBACR_SUEFIE |
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(vc->uv_uba->uba_cr & 0x7c000000);
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}
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int
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dw780_errchk(sc)
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struct uba_softc *sc;
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{
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struct uba_vsoftc *vc = (void *)sc;
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volatile int *hej = &vc->uv_uba->uba_sr;
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if (*hej) {
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*hej = *hej;
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return 1;
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}
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return 0;
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}
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void
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uba_dw780int(arg)
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void *arg;
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{
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struct uba_vsoftc *vc = arg;
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struct uba_regs *ur = vc->uv_uba;
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struct ivec_dsp *scb_vec;
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int br, vec;
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br = mfpr(PR_IPL);
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vec = ur->uba_brrvr[br - 0x14];
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if (vec <= 0) {
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ubaerror(&vc->uv_sc, &br, (int *)&vec);
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if (svec == 0)
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return;
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}
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if (cold)
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scb_fake(vec + vc->uh_ibase, br);
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else {
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scb_vec = (struct ivec_dsp *)((int)scb + 512 + 4 * vec);
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(*scb_vec->hoppaddr)(scb_vec->pushlarg);
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}
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}
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void
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dw780_init(sc)
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struct uba_softc *sc;
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{
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struct uba_vsoftc *vc = (void *)sc;
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vc->uv_uba->uba_cr = UBACR_ADINIT;
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vc->uv_uba->uba_cr = UBACR_IFS|UBACR_BRIE|UBACR_USEFIE|UBACR_SUEFIE;
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while ((vc->uv_uba->uba_cnfgr & UBACNFGR_UBIC) == 0)
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;
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}
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#ifdef notyet
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void
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dw780_purge(sc, bdp)
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struct uba_softc *sc;
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int bdp;
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{
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struct uba_vsoftc *vc = (void *)sc;
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vc->uv_uba->uba_dpr[bdp] |= UBADPR_BNE;
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}
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#endif
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int ubawedgecnt = 10;
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int ubacrazy = 500;
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int zvcnt_max = 5000; /* in 8 sec */
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int ubaerrcnt;
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/*
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* This routine is called by the locore code to process a UBA
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* error on an 11/780 or 8600. The arguments are passed
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* on the stack, and value-result (through some trickery).
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* In particular, the uvec argument is used for further
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* uba processing so the result aspect of it is very important.
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* It must not be declared register.
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*/
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/*ARGSUSED*/
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void
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ubaerror(uh, ipl, uvec)
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register struct uba_softc *uh;
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int *ipl, *uvec;
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{
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struct uba_vsoftc *vc = (void *)uh;
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struct uba_regs *uba = vc->uv_uba;
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register int sr, s;
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if (*uvec == 0) {
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/*
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* Declare dt as unsigned so that negative values
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* are handled as >8 below, in case time was set back.
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*/
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u_long dt = time.tv_sec - vc->uh_zvtime;
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vc->uh_zvtotal++;
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if (dt > 8) {
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vc->uh_zvtime = time.tv_sec;
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vc->uh_zvcnt = 0;
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}
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if (++vc->uh_zvcnt > zvcnt_max) {
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printf("%s: too many zero vectors (%d in <%d sec)\n",
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vc->uv_sc.uh_dev.dv_xname, vc->uh_zvcnt, (int)dt + 1);
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printf("\tIPL 0x%x\n\tcnfgr: %b Adapter Code: 0x%x\n",
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*ipl, uba->uba_cnfgr&(~0xff), UBACNFGR_BITS,
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uba->uba_cnfgr&0xff);
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printf("\tsr: %b\n\tdcr: %x (MIC %sOK)\n",
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uba->uba_sr, ubasr_bits, uba->uba_dcr,
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(uba->uba_dcr&0x8000000)?"":"NOT ");
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ubareset(&vc->uv_sc);
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}
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return;
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}
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if (uba->uba_cnfgr & NEX_CFGFLT) {
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printf("%s: sbi fault sr=%b cnfgr=%b\n",
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vc->uv_sc.uh_dev.dv_xname, uba->uba_sr, ubasr_bits,
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uba->uba_cnfgr, NEXFLT_BITS);
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ubareset(&vc->uv_sc);
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*uvec = 0;
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return;
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}
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sr = uba->uba_sr;
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s = splimp();
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printf("%s: uba error sr=%b fmer=%x fubar=%o\n", vc->uv_sc.uh_dev.dv_xname,
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uba->uba_sr, ubasr_bits, uba->uba_fmer, 4*uba->uba_fubar);
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splx(s);
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uba->uba_sr = sr;
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*uvec &= UBABRRVR_DIV;
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if (++ubaerrcnt % ubawedgecnt == 0) {
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if (ubaerrcnt > ubacrazy)
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panic("uba crazy");
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printf("ERROR LIMIT ");
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ubareset(&vc->uv_sc);
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*uvec = 0;
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}
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}
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