enough to get sbus.o from NetBSD

1 files changed, 931 insertions, 0 deletions

diff --git a/sys/arch/sparc64/dev/sbus.c b/sys/arch/sparc64/dev/sbus.c
new file mode 100644
index 00000000000..91c98c1d2f1
--- /dev/null
+++ b/sys/arch/sparc64/dev/sbus.c
@@ -0,0 +1,931 @@
+/*	$NetBSD: sbus.c,v 1.43 2001/07/20 00:07:13 eeh Exp $ */
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Paul Kranenburg.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Lawrence Berkeley Laboratory.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)sbus.c	8.1 (Berkeley) 6/11/93
+ */
+
+/*
+ * Copyright (c) 1999 Eduardo Horvath
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR  ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR  BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+
+/*
+ * Sbus stuff.
+ */
+
+#include <sys/param.h>
+#include <sys/extent.h>
+#include <sys/malloc.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/reboot.h>
+
+#include <machine/bus.h>
+#include <sparc64/sparc64/cache.h>
+#include <sparc64/dev/iommureg.h>
+#include <sparc64/dev/iommuvar.h>
+#include <sparc64/dev/sbusreg.h>
+#include <dev/sbus/sbusvar.h>
+
+#include <machine/autoconf.h>
+#include <machine/cpu.h>
+#include <machine/sparc64.h>
+
+#ifdef DEBUG
+#define SDB_DVMA	0x1
+#define SDB_INTR	0x2
+int sbus_debug = 0;
+#define DPRINTF(l, s)   do { if (sbus_debug & l) printf s; } while (0)
+#else
+#define DPRINTF(l, s)
+#endif
+
+void sbusreset __P((int));
+
+static bus_space_tag_t sbus_alloc_bustag __P((struct sbus_softc *));
+static bus_dma_tag_t sbus_alloc_dmatag __P((struct sbus_softc *));
+static int sbus_get_intr __P((struct sbus_softc *, int,
+			      struct sbus_intr **, int *, int));
+static int sbus_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t,
+			      int, bus_space_handle_t *));
+static int sbus_overtemp __P((void *));
+static int _sbus_bus_map __P((
+		bus_space_tag_t,
+		bus_type_t,
+		bus_addr_t,		/*offset*/
+		bus_size_t,		/*size*/
+		int,			/*flags*/
+		vaddr_t,		/*preferred virtual address */
+		bus_space_handle_t *));
+static void *sbus_intr_establish __P((
+		bus_space_tag_t,
+		int,			/*Sbus interrupt level*/
+		int,			/*`device class' priority*/
+		int,			/*flags*/
+		int (*) __P((void *)),	/*handler*/
+		void *));		/*handler arg*/
+
+
+/* autoconfiguration driver */
+int	sbus_match __P((struct device *, void *, void *));
+void	sbus_attach __P((struct device *, struct device *, void *));
+
+
+struct cfattach sbus_ca = {
+	sizeof(struct sbus_softc), sbus_match, sbus_attach
+};
+
+extern struct cfdriver sbus_cd;
+
+/*
+ * DVMA routines
+ */
+int sbus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *,
+			  bus_size_t, struct proc *, int));
+void sbus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t));
+int sbus_dmamap_load_raw __P((bus_dma_tag_t, bus_dmamap_t,
+		    bus_dma_segment_t *, int, bus_size_t, int));
+void sbus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
+			   bus_size_t, int));
+int sbus_dmamem_alloc __P((bus_dma_tag_t tag, bus_size_t size,
+			   bus_size_t alignment, bus_size_t boundary,
+			   bus_dma_segment_t *segs, int nsegs, int *rsegs,
+			   int flags));
+void sbus_dmamem_free __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
+			   int nsegs));
+int sbus_dmamem_map __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
+			 int nsegs, size_t size, caddr_t *kvap, int flags));
+void sbus_dmamem_unmap __P((bus_dma_tag_t tag, caddr_t kva,
+			    size_t size));
+
+/*
+ * Child devices receive the Sbus interrupt level in their attach
+ * arguments. We translate these to CPU IPLs using the following
+ * tables. Note: obio bus interrupt levels are identical to the
+ * processor IPL.
+ *
+ * The second set of tables is used when the Sbus interrupt level
+ * cannot be had from the PROM as an `interrupt' property. We then
+ * fall back on the `intr' property which contains the CPU IPL.
+ */
+
+/* Translate Sbus interrupt level to processor IPL */
+static int intr_sbus2ipl_4c[] = {
+	0, 1, 2, 3, 5, 7, 8, 9
+};
+static int intr_sbus2ipl_4m[] = {
+	0, 2, 3, 5, 7, 9, 11, 13
+};
+
+/*
+ * This value is or'ed into the attach args' interrupt level cookie
+ * if the interrupt level comes from an `intr' property, i.e. it is
+ * not an Sbus interrupt level.
+ */
+#define SBUS_INTR_COMPAT	0x80000000
+
+
+/*
+ * Print the location of some sbus-attached device (called just
+ * before attaching that device).  If `sbus' is not NULL, the
+ * device was found but not configured; print the sbus as well.
+ * Return UNCONF (config_find ignores this if the device was configured).
+ */
+int
+sbus_print(args, busname)
+	void *args;
+	const char *busname;
+{
+	struct sbus_attach_args *sa = args;
+	int i;
+
+	if (busname)
+		printf("%s at %s", sa->sa_name, busname);
+	printf(" slot %ld offset 0x%lx", (long)sa->sa_slot, 
+	       (u_long)sa->sa_offset);
+	for (i = 0; i < sa->sa_nintr; i++) {
+		struct sbus_intr *sbi = &sa->sa_intr[i];
+
+		printf(" vector %lx ipl %ld", 
+		       (u_long)sbi->sbi_vec, 
+		       (long)INTLEV(sbi->sbi_pri));
+	}
+	return (UNCONF);
+}
+
+int
+sbus_match(parent, vcf, aux)
+	struct device *parent;
+	void *vcf;
+	void *aux;
+{
+	struct cfdata *cf = vcf;
+	struct mainbus_attach_args *ma = aux;
+
+	return (strcmp(cf->cf_driver->cd_name, ma->ma_name) == 0);
+}
+
+/*
+ * Attach an Sbus.
+ */
+void
+sbus_attach(parent, self, aux)
+	struct device *parent;
+	struct device *self;
+	void *aux;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)self;
+	struct mainbus_attach_args *ma = aux;
+	struct intrhand *ih;
+	int ipl;
+	char *name;
+	int node = ma->ma_node;
+
+	int node0, error;
+	bus_space_tag_t sbt;
+	struct sbus_attach_args sa;
+
+	sc->sc_bustag = ma->ma_bustag;
+	sc->sc_dmatag = ma->ma_dmatag;
+	sc->sc_sysio = (struct sysioreg*)(u_long)ma->ma_address[0];	/* Use prom mapping for sysio. */
+	sc->sc_ign = ma->ma_interrupts[0] & INTMAP_IGN;		/* Find interrupt group no */
+
+	/* Setup interrupt translation tables */
+	sc->sc_intr2ipl = CPU_ISSUN4C
+				? intr_sbus2ipl_4c
+				: intr_sbus2ipl_4m;
+
+	/*
+	 * Record clock frequency for synchronous SCSI.
+	 * IS THIS THE CORRECT DEFAULT??
+	 */
+	sc->sc_clockfreq = getpropint(node, "clock-frequency", 25*1000*1000);
+	printf(": clock = %s MHz\n", clockfreq(sc->sc_clockfreq));
+
+	sbt = sbus_alloc_bustag(sc);
+	sc->sc_dmatag = sbus_alloc_dmatag(sc);
+
+	/*
+	 * Get the SBus burst transfer size if burst transfers are supported
+	 */
+	sc->sc_burst = getpropint(node, "burst-sizes", 0);
+
+	/*
+	 * Collect address translations from the OBP.
+	 */
+	error = getprop(node, "ranges", sizeof(struct sbus_range),
+			 &sc->sc_nrange, (void **)&sc->sc_range);
+	if (error)
+		panic("%s: error getting ranges property", sc->sc_dev.dv_xname);
+
+	/* initailise the IOMMU */
+
+	/* punch in our copies */
+	sc->sc_is.is_bustag = sc->sc_bustag;
+	sc->sc_is.is_iommu = &sc->sc_sysio->sys_iommu;
+	sc->sc_is.is_sb = &sc->sc_sysio->sys_strbuf;
+
+	/* give us a nice name.. */
+	name = (char *)malloc(32, M_DEVBUF, M_NOWAIT);
+	if (name == 0)
+		panic("couldn't malloc iommu name");
+	snprintf(name, 32, "%s dvma", sc->sc_dev.dv_xname);
+
+	iommu_init(name, &sc->sc_is, 0, -1);
+
+	/* Enable the over temp intr */
+	ih = (struct intrhand *)
+		malloc(sizeof(struct intrhand), M_DEVBUF, M_NOWAIT);
+	ih->ih_map = &sc->sc_sysio->therm_int_map;
+	ih->ih_clr = NULL; /* &sc->sc_sysio->therm_clr_int; */
+	ih->ih_fun = sbus_overtemp;
+	ipl = 1;
+	ih->ih_pil = (1<<ipl);
+	ih->ih_number = INTVEC(*(ih->ih_map));
+	intr_establish(ipl, ih);
+	*(ih->ih_map) |= INTMAP_V;
+	
+	/*
+	 * Note: the stupid SBUS IOMMU ignores the high bits of an address, so a
+	 * NULL DMA pointer will be translated by the first page of the IOTSB.
+	 * To avoid bugs we'll alloc and ignore the first entry in the IOTSB.
+	 */
+	{
+		u_long dummy;
+
+		if (extent_alloc_subregion(sc->sc_is.is_dvmamap,
+		    sc->sc_is.is_dvmabase, sc->sc_is.is_dvmabase + NBPG,
+		    NBPG, NBPG, 0, 0, EX_NOWAIT|EX_BOUNDZERO,
+		    (u_long *)&dummy) != 0)
+			panic("sbus iommu: can't toss first dvma page");
+	}
+
+	/*
+	 * Loop through ROM children, fixing any relative addresses
+	 * and then configuring each device.
+	 * `specials' is an array of device names that are treated
+	 * specially:
+	 */
+	node0 = firstchild(node);
+	for (node = node0; node; node = nextsibling(node)) {
+		char *name = getpropstring(node, "name");
+
+		if (sbus_setup_attach_args(sc, sbt, sc->sc_dmatag,
+					   node, &sa) != 0) {
+			printf("sbus_attach: %s: incomplete\n", name);
+			continue;
+		}
+		(void) config_found(&sc->sc_dev, (void *)&sa, sbus_print);
+		sbus_destroy_attach_args(&sa);
+	}
+}
+
+int
+sbus_setup_attach_args(sc, bustag, dmatag, node, sa)
+	struct sbus_softc	*sc;
+	bus_space_tag_t		bustag;
+	bus_dma_tag_t		dmatag;
+	int			node;
+	struct sbus_attach_args	*sa;
+{
+	/*struct	sbus_reg sbusreg;*/
+	/*int	base;*/
+	int	error;
+	int n;
+
+	bzero(sa, sizeof(struct sbus_attach_args));
+	error = getprop(node, "name", 1, &n, (void **)&sa->sa_name);
+	if (error != 0)
+		return (error);
+	sa->sa_name[n] = '\0';
+
+	sa->sa_bustag = bustag;
+	sa->sa_dmatag = dmatag;
+	sa->sa_node = node;
+	sa->sa_frequency = sc->sc_clockfreq;
+
+	error = getprop(node, "reg", sizeof(struct sbus_reg),
+			 &sa->sa_nreg, (void **)&sa->sa_reg);
+	if (error != 0) {
+		char buf[32];
+		if (error != ENOENT ||
+		    !node_has_property(node, "device_type") ||
+		    strcmp(getpropstringA(node, "device_type", buf),
+			   "hierarchical") != 0)
+			return (error);
+	}
+	for (n = 0; n < sa->sa_nreg; n++) {
+		/* Convert to relative addressing, if necessary */
+		u_int32_t base = sa->sa_reg[n].sbr_offset;
+		if (SBUS_ABS(base)) {
+			sa->sa_reg[n].sbr_slot = SBUS_ABS_TO_SLOT(base);
+			sa->sa_reg[n].sbr_offset = SBUS_ABS_TO_OFFSET(base);
+		}
+	}
+
+	if ((error = sbus_get_intr(sc, node, &sa->sa_intr, &sa->sa_nintr,
+	    sa->sa_slot)) != 0)
+		return (error);
+
+	error = getprop(node, "address", sizeof(u_int32_t),
+			 &sa->sa_npromvaddrs, (void **)&sa->sa_promvaddrs);
+	if (error != 0 && error != ENOENT)
+		return (error);
+
+	return (0);
+}
+
+void
+sbus_destroy_attach_args(sa)
+	struct sbus_attach_args	*sa;
+{
+	if (sa->sa_name != NULL)
+		free(sa->sa_name, M_DEVBUF);
+
+	if (sa->sa_nreg != 0)
+		free(sa->sa_reg, M_DEVBUF);
+
+	if (sa->sa_intr)
+		free(sa->sa_intr, M_DEVBUF);
+
+	if (sa->sa_promvaddrs)
+		free((void *)sa->sa_promvaddrs, M_DEVBUF);
+
+	bzero(sa, sizeof(struct sbus_attach_args)); /*DEBUG*/
+}
+
+
+int
+_sbus_bus_map(t, btype, offset, size, flags, vaddr, hp)
+	bus_space_tag_t t;
+	bus_type_t btype;
+	bus_addr_t offset;
+	bus_size_t size;
+	int	flags;
+	vaddr_t vaddr;
+	bus_space_handle_t *hp;
+{
+	struct sbus_softc *sc = t->cookie;
+	int64_t slot = btype;
+	int i;
+
+	for (i = 0; i < sc->sc_nrange; i++) {
+		bus_addr_t paddr;
+
+		if (sc->sc_range[i].cspace != slot)
+			continue;
+
+		/* We've found the connection to the parent bus */
+		paddr = sc->sc_range[i].poffset + offset;
+		paddr |= ((bus_addr_t)sc->sc_range[i].pspace<<32);
+		DPRINTF(SDB_DVMA,
+("\n_sbus_bus_map: mapping paddr slot %lx offset %lx poffset %lx paddr %lx\n",
+		    (long)slot, (long)offset, (long)sc->sc_range[i].poffset,
+		    (long)paddr));
+		return (bus_space_map2(sc->sc_bustag, 0, paddr,
+					size, flags, vaddr, hp));
+	}
+
+	return (EINVAL);
+}
+
+int
+sbus_bus_mmap(t, btype, paddr, flags, hp)
+	bus_space_tag_t t;
+	bus_type_t btype;
+	bus_addr_t paddr;
+	int flags;
+	bus_space_handle_t *hp;
+{
+	bus_addr_t offset = paddr;
+	int slot = btype;
+	struct sbus_softc *sc = t->cookie;
+	int i;
+
+	for (i = 0; i < sc->sc_nrange; i++) {
+		bus_addr_t paddr;
+
+		if (sc->sc_range[i].cspace != slot)
+			continue;
+
+		paddr = sc->sc_range[i].poffset + offset;
+		paddr |= ((bus_addr_t)sc->sc_range[i].pspace<<32);
+		return (bus_space_mmap(sc->sc_bustag, 0, paddr,
+				       flags, hp));
+	}
+
+	return (-1);
+}
+
+
+/*
+ * Each attached device calls sbus_establish after it initializes
+ * its sbusdev portion.
+ */
+void
+sbus_establish(sd, dev)
+	register struct sbusdev *sd;
+	register struct device *dev;
+{
+	register struct sbus_softc *sc;
+	register struct device *curdev;
+
+	/*
+	 * We have to look for the sbus by name, since it is not necessarily
+	 * our immediate parent (i.e. sun4m /iommu/sbus/espdma/esp)
+	 * We don't just use the device structure of the above-attached
+	 * sbus, since we might (in the future) support multiple sbus's.
+	 */
+	for (curdev = dev->dv_parent; ; curdev = curdev->dv_parent) {
+		if (!curdev || !curdev->dv_xname)
+			panic("sbus_establish: can't find sbus parent for %s",
+			      sd->sd_dev->dv_xname
+					? sd->sd_dev->dv_xname
+					: "<unknown>" );
+
+		if (strncmp(curdev->dv_xname, "sbus", 4) == 0)
+			break;
+	}
+	sc = (struct sbus_softc *) curdev;
+
+	sd->sd_dev = dev;
+	sd->sd_bchain = sc->sc_sbdev;
+	sc->sc_sbdev = sd;
+}
+
+/*
+ * Reset the given sbus.
+ */
+void
+sbusreset(sbus)
+	int sbus;
+{
+	register struct sbusdev *sd;
+	struct sbus_softc *sc = sbus_cd.cd_devs[sbus];
+	struct device *dev;
+
+	printf("reset %s:", sc->sc_dev.dv_xname);
+	for (sd = sc->sc_sbdev; sd != NULL; sd = sd->sd_bchain) {
+		if (sd->sd_reset) {
+			dev = sd->sd_dev;
+			(*sd->sd_reset)(dev);
+			printf(" %s", dev->dv_xname);
+		}
+	}
+	/* Reload iommu regs */
+	iommu_reset(&sc->sc_is);
+}
+
+/*
+ * Handle an overtemp situation.
+ *
+ * SPARCs have temperature sensors which generate interrupts
+ * if the machine's temperature exceeds a certain threshold.
+ * This handles the interrupt and powers off the machine.
+ * The same needs to be done to PCI controller drivers.
+ */
+int
+sbus_overtemp(arg)
+	void *arg;
+{
+	/* Should try a clean shutdown first */
+	printf("DANGER: OVER TEMPERATURE detected\nShutting down...\n");
+	delay(20);
+	boot(RB_POWERDOWN|RB_HALT);
+	/*NOTREACHED*/
+	return (1);
+}
+
+/*
+ * Get interrupt attributes for an Sbus device.
+ */
+int
+sbus_get_intr(sc, node, ipp, np, slot)
+	struct sbus_softc *sc;
+	int node;
+	struct sbus_intr **ipp;
+	int *np;
+	int slot;
+{
+	int *ipl;
+	int n, i;
+	char buf[32];
+
+	/*
+	 * The `interrupts' property contains the Sbus interrupt level.
+	 */
+	ipl = NULL;
+	if (getprop(node, "interrupts", sizeof(int), np, (void **)&ipl) == 0) {
+		struct sbus_intr *ip;
+		int pri;
+
+		/* Default to interrupt level 2 -- otherwise unused */
+		pri = INTLEVENCODE(2);
+
+		/* Change format to an `struct sbus_intr' array */
+		ip = malloc(*np * sizeof(struct sbus_intr), M_DEVBUF, M_NOWAIT);
+		if (ip == NULL)
+			return (ENOMEM);
+
+		/*
+		 * Now things get ugly.  We need to take this value which is
+		 * the interrupt vector number and encode the IPL into it
+		 * somehow. Luckily, the interrupt vector has lots of free
+		 * space and we can easily stuff the IPL in there for a while.
+		 */
+		getpropstringA(node, "device_type", buf);
+		if (!buf[0])
+			getpropstringA(node, "name", buf);
+
+		for (i = 0; intrmap[i].in_class; i++) 
+			if (strcmp(intrmap[i].in_class, buf) == 0) {
+				pri = INTLEVENCODE(intrmap[i].in_lev);
+				break;
+			}
+
+		/*
+		 * Sbus card devices need the slot number encoded into
+		 * the vector as this is generally not done.
+		 */
+		if ((ipl[0] & INTMAP_OBIO) == 0)
+			pri |= slot << 3;
+
+		for (n = 0; n < *np; n++) {
+			/* 
+			 * We encode vector and priority into sbi_pri so we 
+			 * can pass them as a unit.  This will go away if 
+			 * sbus_establish ever takes an sbus_intr instead 
+			 * of an integer level.
+			 * Stuff the real vector in sbi_vec.
+			 */
+
+			ip[n].sbi_pri = pri|ipl[n];
+			ip[n].sbi_vec = ipl[n];
+		}
+		free(ipl, M_DEVBUF);
+		*ipp = ip;
+	}
+	
+	return (0);
+}
+
+
+/*
+ * Install an interrupt handler for an Sbus device.
+ */
+void *
+sbus_intr_establish(t, pri, level, flags, handler, arg)
+	bus_space_tag_t t;
+	int pri;
+	int level;
+	int flags;
+	int (*handler) __P((void *));
+	void *arg;
+{
+	struct sbus_softc *sc = t->cookie;
+	struct intrhand *ih;
+	int ipl;
+	long vec = pri; 
+
+	ih = (struct intrhand *)
+		malloc(sizeof(struct intrhand), M_DEVBUF, M_NOWAIT);
+	if (ih == NULL)
+		return (NULL);
+
+	if ((flags & BUS_INTR_ESTABLISH_SOFTINTR) != 0)
+		ipl = vec;
+	else if ((vec & SBUS_INTR_COMPAT) != 0)
+		ipl = vec & ~SBUS_INTR_COMPAT;
+	else {
+		/* Decode and remove IPL */
+		ipl = INTLEV(vec);
+		vec = INTVEC(vec);
+		DPRINTF(SDB_INTR,
+		    ("\nsbus: intr[%ld]%lx: %lx\nHunting for IRQ...\n",
+		    (long)ipl, (long)vec, (u_long)intrlev[vec]));
+		if ((vec & INTMAP_OBIO) == 0) {
+			/* We're in an SBUS slot */
+			/* Register the map and clear intr registers */
+
+			int slot = INTSLOT(pri);
+
+			ih->ih_map = &(&sc->sc_sysio->sbus_slot0_int)[slot];
+			ih->ih_clr = &sc->sc_sysio->sbus0_clr_int[vec];
+#ifdef DEBUG
+			if (sbus_debug & SDB_INTR) {
+				int64_t intrmap = *ih->ih_map;
+				
+				printf("SBUS %lx IRQ as %llx in slot %d\n", 
+				       (long)vec, (long long)intrmap, slot);
+				printf("\tmap addr %p clr addr %p\n",
+				    ih->ih_map, ih->ih_clr);
+			}
+#endif
+			/* Enable the interrupt */
+			vec |= INTMAP_V;
+			/* Insert IGN */
+			vec |= sc->sc_ign;
+			bus_space_write_8(sc->sc_bustag,
+			    (bus_space_handle_t)(u_long)ih->ih_map, 0, vec);
+		} else {
+			int64_t *intrptr = &sc->sc_sysio->scsi_int_map;
+			int64_t intrmap = 0;
+			int i;
+
+			/* Insert IGN */
+			vec |= sc->sc_ign;
+			for (i = 0; &intrptr[i] <=
+			    (int64_t *)&sc->sc_sysio->reserved_int_map &&
+			    INTVEC(intrmap = intrptr[i]) != INTVEC(vec); i++)
+				;
+			if (INTVEC(intrmap) == INTVEC(vec)) {
+				DPRINTF(SDB_INTR,
+				    ("OBIO %lx IRQ as %lx in slot %d\n", 
+				    vec, (long)intrmap, i));
+				/* Register the map and clear intr registers */
+				ih->ih_map = &intrptr[i];
+				intrptr = (int64_t *)&sc->sc_sysio->scsi_clr_int;
+				ih->ih_clr = &intrptr[i];
+				/* Enable the interrupt */
+				intrmap |= INTMAP_V;
+				bus_space_write_8(sc->sc_bustag,
+				    (bus_space_handle_t)(u_long)ih->ih_map, 0,
+				    (u_long)intrmap);
+			} else
+				panic("IRQ not found!");
+		}
+	}
+#ifdef DEBUG
+	if (sbus_debug & SDB_INTR) { long i; for (i = 0; i < 400000000; i++); }
+#endif
+
+	ih->ih_fun = handler;
+	ih->ih_arg = arg;
+	ih->ih_number = vec;
+	ih->ih_pil = (1<<ipl);
+	intr_establish(ipl, ih);
+	return (ih);
+}
+
+static bus_space_tag_t
+sbus_alloc_bustag(sc)
+	struct sbus_softc *sc;
+{
+	bus_space_tag_t sbt;
+
+	sbt = (bus_space_tag_t)
+		malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT);
+	if (sbt == NULL)
+		return (NULL);
+
+	bzero(sbt, sizeof *sbt);
+	sbt->cookie = sc;
+	sbt->parent = sc->sc_bustag;
+	sbt->type = SBUS_BUS_SPACE;
+	sbt->sparc_bus_map = _sbus_bus_map;
+	sbt->sparc_bus_mmap = sbus_bus_mmap;
+	sbt->sparc_intr_establish = sbus_intr_establish;
+	return (sbt);
+}
+
+
+static bus_dma_tag_t
+sbus_alloc_dmatag(sc)
+	struct sbus_softc *sc;
+{
+	bus_dma_tag_t sdt, psdt = sc->sc_dmatag;
+
+	sdt = (bus_dma_tag_t)
+		malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT);
+	if (sdt == NULL)
+		/* Panic? */
+		return (psdt);
+
+	sdt->_cookie = sc;
+	sdt->_parent = psdt;
+#define PCOPY(x)	sdt->x = psdt->x
+	PCOPY(_dmamap_create);
+	PCOPY(_dmamap_destroy);
+	sdt->_dmamap_load = sbus_dmamap_load;
+	PCOPY(_dmamap_load_mbuf);
+	PCOPY(_dmamap_load_uio);
+	sdt->_dmamap_load_raw = sbus_dmamap_load_raw;
+	sdt->_dmamap_unload = sbus_dmamap_unload;
+	sdt->_dmamap_sync = sbus_dmamap_sync;
+	sdt->_dmamem_alloc = sbus_dmamem_alloc;
+	sdt->_dmamem_free = sbus_dmamem_free;
+	sdt->_dmamem_map = sbus_dmamem_map;
+	sdt->_dmamem_unmap = sbus_dmamem_unmap;
+	PCOPY(_dmamem_mmap);
+#undef	PCOPY
+	sc->sc_dmatag = sdt;
+	return (sdt);
+}
+
+int
+sbus_dmamap_load(tag, map, buf, buflen, p, flags)
+	bus_dma_tag_t tag;
+	bus_dmamap_t map;
+	void *buf;
+	bus_size_t buflen;
+	struct proc *p;
+	int flags;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)tag->_cookie;
+
+	return (iommu_dvmamap_load(tag, &sc->sc_is, map, buf, buflen, p, flags));
+}
+
+int
+sbus_dmamap_load_raw(tag, map, segs, nsegs, size, flags)
+	bus_dma_tag_t tag;
+	bus_dmamap_t map;
+	bus_dma_segment_t *segs;
+	int nsegs;
+	bus_size_t size;
+	int flags;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)tag->_cookie;
+
+	return (iommu_dvmamap_load_raw(tag, &sc->sc_is, map, segs, nsegs, flags, size));
+}
+
+void
+sbus_dmamap_unload(tag, map)
+	bus_dma_tag_t tag;
+	bus_dmamap_t map;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)tag->_cookie;
+
+	iommu_dvmamap_unload(tag, &sc->sc_is, map);
+}
+
+void
+sbus_dmamap_sync(tag, map, offset, len, ops)
+	bus_dma_tag_t tag;
+	bus_dmamap_t map;
+	bus_addr_t offset;
+	bus_size_t len;
+	int ops;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)tag->_cookie;
+
+	if (ops & (BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)) {
+		/* Flush the CPU then the IOMMU */
+		bus_dmamap_sync(tag->_parent, map, offset, len, ops);
+		iommu_dvmamap_sync(tag, &sc->sc_is, map, offset, len, ops);
+	}
+	if (ops & (BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE)) {
+		/* Flush the IOMMU then the CPU */
+		iommu_dvmamap_sync(tag, &sc->sc_is, map, offset, len, ops);
+		bus_dmamap_sync(tag->_parent, map, offset, len, ops);
+	}
+}
+
+int
+sbus_dmamem_alloc(tag, size, alignment, boundary, segs, nsegs, rsegs, flags)
+	bus_dma_tag_t tag;
+	bus_size_t size;
+	bus_size_t alignment;
+	bus_size_t boundary;
+	bus_dma_segment_t *segs;
+	int nsegs;
+	int *rsegs;
+	int flags;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)tag->_cookie;
+
+	return (iommu_dvmamem_alloc(tag, &sc->sc_is, size, alignment, boundary,
+	    segs, nsegs, rsegs, flags));
+}
+
+void
+sbus_dmamem_free(tag, segs, nsegs)
+	bus_dma_tag_t tag;
+	bus_dma_segment_t *segs;
+	int nsegs;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)tag->_cookie;
+
+	iommu_dvmamem_free(tag, &sc->sc_is, segs, nsegs);
+}
+
+int
+sbus_dmamem_map(tag, segs, nsegs, size, kvap, flags)
+	bus_dma_tag_t tag;
+	bus_dma_segment_t *segs;
+	int nsegs;
+	size_t size;
+	caddr_t *kvap;
+	int flags;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)tag->_cookie;
+
+	return (iommu_dvmamem_map(tag, &sc->sc_is, segs, nsegs, size, kvap, flags));
+}
+
+void
+sbus_dmamem_unmap(tag, kva, size)
+	bus_dma_tag_t tag;
+	caddr_t kva;
+	size_t size;
+{
+	struct sbus_softc *sc = (struct sbus_softc *)tag->_cookie;
+
+	iommu_dvmamem_unmap(tag, &sc->sc_is, kva, size);
+}