Make the DMA controller a separate device attached to intio. Intio
devices can use the DMA controller too.
This commit is contained in:
gmcgarry
parent
75851dc4ed
commit
85dbe5f6c5
@ -1,4 +1,4 @@
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# $NetBSD: GENERIC,v 1.88 2002/11/22 12:21:01 wiz Exp $
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# $NetBSD: GENERIC,v 1.89 2002/12/22 00:17:13 gmcgarry Exp $
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#
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# GENERIC machine description file
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#
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@ -22,7 +22,7 @@ include "arch/hp300/conf/std.hp300"
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options INCLUDE_CONFIG_FILE # embed config file in kernel binary
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#ident "GENERIC-$Revision: 1.88 $"
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#ident "GENERIC-$Revision: 1.89 $"
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maxusers 32 # estimated number of users
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@ -164,6 +164,7 @@ intio0 at mainbus0 # internal i/o space
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dio0 at mainbus0 # DIO/DIO-II bus
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rtc* at intio? # real-time clock (not optional)
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dma* at intio? # DMA controller
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hil* at intio? # Human Interface Loop
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options UK_KEYBOARD # include United Kingdom HIL keymap
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options SE_KEYBOARD # include Swedish HIL keymap
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@ -1,4 +1,4 @@
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# $NetBSD: INSTALL,v 1.8 2002/09/18 02:43:58 lukem Exp $
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# $NetBSD: INSTALL,v 1.9 2002/12/22 00:17:14 gmcgarry Exp $
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#
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# INSTALL machine description file
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#
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@ -121,6 +121,9 @@ dio0 at mainbus0 # DIO/DIO-II bus
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# Real-time clock (not optional)
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rtc* at intio?
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# DMA controller
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dma* at intio?
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# Human Interface Loop
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hil* at intio?
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#options UK_KEYBOARD # include United Kingdom HIL keymap
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@ -1,4 +1,4 @@
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# $NetBSD: files.hp300,v 1.62 2002/11/05 07:41:18 chs Exp $
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# $NetBSD: files.hp300,v 1.63 2002/12/22 00:17:14 gmcgarry Exp $
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#
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# hp300-specific configuration info
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@ -55,6 +55,11 @@ attach hil at intio
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file arch/hp300/dev/hil.c hil needs-flag
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file arch/hp300/dev/hil_keymaps.c hil
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# 98620 DMA controller
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device dma { }
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attach dma at intio
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file arch/hp300/dev/dma.c dma
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# Apollo Utilility Chip (a.k.a. "Frodo") found on 4xx workstations
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device frodo { offset = -1 }
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attach frodo at intio
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@ -130,11 +135,11 @@ file arch/hp300/dev/if_le.c le
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# HP-IB interfaces
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define hpibdev { }
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device nhpib: hpibdev
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device nhpib: hpibdev, dma
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attach nhpib at dio
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file arch/hp300/dev/nhpib.c nhpib
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device fhpib: hpibdev
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device fhpib: hpibdev, dma
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attach fhpib at dio
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file arch/hp300/dev/fhpib.c fhpib
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@ -200,7 +205,6 @@ file arch/hp300/hp300/procfs_machdep.c procfs
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file arch/hp300/hp300/softintr.c
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file arch/hp300/hp300/trap.c
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file arch/hp300/hp300/disksubr.c
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file arch/hp300/dev/dma.c
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file arch/m68k/m68k/cacheops.c
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file arch/m68k/m68k/db_memrw.c ddb | kgdb
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file arch/m68k/m68k/kgdb_machdep.c kgdb
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@ -1,4 +1,4 @@
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/* $NetBSD: dio.c,v 1.19 2002/10/02 05:15:49 thorpej Exp $ */
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/* $NetBSD: dio.c,v 1.20 2002/12/22 00:17:15 gmcgarry Exp $ */
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/*-
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* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
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@ -41,7 +41,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dio.c,v 1.19 2002/10/02 05:15:49 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: dio.c,v 1.20 2002/12/22 00:17:15 gmcgarry Exp $");
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#define _HP300_INTR_H_PRIVATE
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@ -100,9 +100,9 @@ dioattach(parent, self, aux)
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caddr_t pa, va;
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int scode, scmax, didmap, scodesize;
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printf("\n");
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scmax = DIO_SCMAX(machineid);
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printf(": ");
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dmainit();
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for (scode = 0; scode < scmax; ) {
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if (DIO_INHOLE(scode)) {
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@ -1,4 +1,4 @@
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/* $NetBSD: dma.c,v 1.27 2002/10/20 02:37:25 chs Exp $ */
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/* $NetBSD: dma.c,v 1.28 2002/12/22 00:17:15 gmcgarry Exp $ */
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/*-
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* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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@ -76,23 +76,22 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dma.c,v 1.27 2002/10/20 02:37:25 chs Exp $");
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__KERNEL_RCSID(0, "$NetBSD: dma.c,v 1.28 2002/12/22 00:17:15 gmcgarry Exp $");
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#include <machine/hp300spu.h> /* XXX param.h includes cpu.h */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/callout.h>
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#include <sys/time.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/device.h>
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#include <machine/frame.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include <machine/bus.h>
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#include <m68k/cacheops.h>
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#include <hp300/dev/intiovar.h>
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#include <hp300/dev/dmareg.h>
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#include <hp300/dev/dmavar.h>
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@ -121,6 +120,10 @@ struct dma_channel {
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};
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struct dma_softc {
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struct device sc_dev;
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bus_space_tag_t sc_bst;
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bus_space_handle_t sc_bsh;
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struct dmareg *sc_dmareg; /* pointer to our hardware */
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struct dma_channel sc_chan[NDMACHAN]; /* 2 channels */
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TAILQ_HEAD(, dmaqueue) sc_queue; /* job queue */
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@ -128,7 +131,7 @@ struct dma_softc {
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char sc_type; /* A, B, or C */
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int sc_ipl; /* our interrupt level */
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void *sc_ih; /* interrupt cookie */
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} dma_softc;
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};
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/* types */
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#define DMA_B 0
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@ -139,6 +142,12 @@ struct dma_softc {
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#define DMAF_VCFLUSH 0x02
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#define DMAF_NOINTR 0x04
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int dmamatch(struct device *, struct cfdata *, void *);
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void dmaattach(struct device *, struct device *, void *);
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CFATTACH_DECL(dma, sizeof(struct dma_softc),
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dmamatch, dmaattach, NULL, NULL);
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int dmaintr __P((void *));
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#ifdef DEBUG
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@ -158,21 +167,50 @@ long dmaword[NDMACHAN];
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long dmalword[NDMACHAN];
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#endif
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/*
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* Initialize the DMA engine, called by dioattach()
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*/
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void
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dmainit()
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static struct dma_softc *dma_softc;
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int
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dmamatch(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct dma_softc *sc = &dma_softc;
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struct dmareg *dma;
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struct intio_attach_args *ia = aux;
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static int dmafound = 0; /* can only have one */
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if (strcmp("dma", ia->ia_modname) != 0 || dmafound)
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return (0);
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dmafound = 1;
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return (1);
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}
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void
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dmaattach(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 dma_softc *sc = (struct dma_softc *)self;
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struct intio_attach_args *ia = aux;
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struct dma_channel *dc;
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struct dmareg *dma;
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int i;
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char rev;
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/* There's just one. */
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sc->sc_dmareg = (struct dmareg *)DMA_BASE;
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dma = sc->sc_dmareg;
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dma_softc = sc;
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sc->sc_bst = ia->ia_bst;
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if (bus_space_map(sc->sc_bst, ia->ia_iobase, INTIO_DEVSIZE, 0,
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&sc->sc_bsh)) {
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printf("%s: can't map registers\n", sc->sc_dev.dv_xname);
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return;
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}
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dma = (struct dmareg *)bus_space_vaddr(sc->sc_bst, sc->sc_bsh);
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sc->sc_dmareg = dma;
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/*
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* Determine the DMA type. A DMA_A or DMA_B will fail the
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@ -220,7 +258,7 @@ dmainit()
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callout_reset(&sc->sc_debug_ch, 30 * hz, dmatimeout, sc);
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#endif
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printf("98620%c, 2 channels, %d bit DMA\n",
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printf(": 98620%c, 2 channels, %d-bit DMA\n",
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rev, (rev == 'B') ? 16 : 32);
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/*
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@ -237,7 +275,7 @@ dmainit()
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void
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dmacomputeipl()
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{
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struct dma_softc *sc = &dma_softc;
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struct dma_softc *sc = dma_softc;
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if (sc->sc_ih != NULL)
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intr_disestablish(sc->sc_ih);
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@ -254,7 +292,7 @@ int
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dmareq(dq)
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struct dmaqueue *dq;
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{
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struct dma_softc *sc = &dma_softc;
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struct dma_softc *sc = dma_softc;
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int i, chan, s;
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#if 1
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@ -299,7 +337,7 @@ dmafree(dq)
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struct dmaqueue *dq;
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{
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int unit = dq->dq_chan;
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struct dma_softc *sc = &dma_softc;
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struct dma_softc *sc = dma_softc;
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struct dma_channel *dc = &sc->sc_chan[unit];
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struct dmaqueue *dn;
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int chan, s;
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@ -372,7 +410,7 @@ dmago(unit, addr, count, flags)
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int count;
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int flags;
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{
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struct dma_softc *sc = &dma_softc;
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struct dma_softc *sc = dma_softc;
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struct dma_channel *dc = &sc->sc_chan[unit];
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char *dmaend = NULL;
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int seg, tcount;
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@ -516,7 +554,7 @@ void
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dmastop(unit)
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int unit;
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{
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struct dma_softc *sc = &dma_softc;
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struct dma_softc *sc = dma_softc;
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struct dma_channel *dc = &sc->sc_chan[unit];
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#ifdef DEBUG
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@ -1,4 +1,4 @@
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/* $NetBSD: intio.c,v 1.12 2002/10/02 05:15:53 thorpej Exp $ */
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/* $NetBSD: intio.c,v 1.13 2002/12/22 00:17:15 gmcgarry Exp $ */
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/*-
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* Copyright (c) 1996, 1998, 2001 The NetBSD Foundation, Inc.
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@ -41,7 +41,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: intio.c,v 1.12 2002/10/02 05:15:53 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: intio.c,v 1.13 2002/12/22 00:17:15 gmcgarry Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -65,6 +65,7 @@ CFATTACH_DECL(intio, sizeof(struct device),
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const struct intio_builtins intio_3xx_builtins[] = {
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{ "rtc", 0x020000, -1},
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{ "hil", 0x028000, 1},
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{ "dma", 0x100000, 1},
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{ "fb", 0x160000, -1},
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};
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#define nintio_3xx_builtins \
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@ -76,6 +77,7 @@ const struct intio_builtins intio_4xx_builtins[] = {
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{ "rtc", 0x020000, -1},
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{ "frodo", 0x01c000, 5},
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{ "hil", 0x028000, 1},
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{ "dma", 0x100000, 1},
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};
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#define nintio_4xx_builtins \
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(sizeof(intio_4xx_builtins) / sizeof(intio_4xx_builtins[0]))
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