NetBSD/sys/arch/sparc64/dev/psycho.c

/*	$NetBSD: psycho.c,v 1.12 2000/05/24 20:27:52 eeh Exp $	*/

/*
 * Copyright (c) 1999, 2000 Matthew R. Green
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * 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.
 */

#include "opt_ddb.h"

/*
 * PCI support for UltraSPARC `psycho'
 */

#undef DEBUG
#define DEBUG

#ifdef DEBUG
#define PDB_PROM	0x01
#define PDB_IOMMU	0x02
#define PDB_BUSMAP	0x04
#define PDB_BUSDMA	0x08
#define PDB_INTR	0x10
int psycho_debug = 0x0;
#define DPRINTF(l, s)   do { if (psycho_debug & l) printf s; } while (0)
#else
#define DPRINTF(l, s)
#endif

#include <sys/param.h>
#include <sys/device.h>
#include <sys/errno.h>
#include <sys/extent.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/time.h>

#include <vm/vm.h>
#include <vm/vm_kern.h>

#define _SPARC_BUS_DMA_PRIVATE
#include <machine/bus.h>
#include <machine/autoconf.h>

#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>

#include <sparc64/dev/iommureg.h>
#include <sparc64/dev/iommuvar.h>
#include <sparc64/dev/psychoreg.h>
#include <sparc64/dev/psychovar.h>
#include <sparc64/sparc64/cache.h>

#include "ioconf.h"

static pci_chipset_tag_t psycho_alloc_chipset __P((struct psycho_pbm *, int,
						   pci_chipset_tag_t));
static void psycho_get_bus_range __P((int, int *));
static void psycho_get_ranges __P((int, struct psycho_ranges **, int *));
static void psycho_get_registers __P((int, struct psycho_registers **, int *));
static void psycho_get_intmap __P((int, struct psycho_interrupt_map **, int *));
static void psycho_get_intmapmask __P((int, struct psycho_interrupt_map_mask *));

/* IOMMU support */
static void psycho_iommu_init __P((struct psycho_softc *));

/*
 * bus space and bus dma support for UltraSPARC `psycho'.  note that most
 * of the bus dma support is provided by the iommu dvma controller.
 */
static int psycho_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t,
				int, bus_space_handle_t *));
static int _psycho_bus_map __P((bus_space_tag_t, bus_type_t, bus_addr_t,
				bus_size_t, int, vaddr_t,
				bus_space_handle_t *));
static void *psycho_intr_establish __P((bus_space_tag_t, int, int,
				int (*) __P((void *)), void *));

static int psycho_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *,
				   bus_size_t, struct proc *, int));
static void psycho_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t));
static int psycho_dmamap_load_raw __P((bus_dma_tag_t, bus_dmamap_t,
		    bus_dma_segment_t *, int, bus_size_t, int));
static void psycho_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
				    bus_size_t, int));
int psycho_dmamem_alloc __P((bus_dma_tag_t, bus_size_t, bus_size_t, bus_size_t,
			     bus_dma_segment_t *, int, int *, int));
void psycho_dmamem_free __P((bus_dma_tag_t, bus_dma_segment_t *, int));
int psycho_dmamem_map __P((bus_dma_tag_t, bus_dma_segment_t *, int, size_t,
			   caddr_t *, int));
void psycho_dmamem_unmap __P((bus_dma_tag_t, caddr_t, size_t));

/* base pci_chipset */
extern struct sparc_pci_chipset _sparc_pci_chipset;

/*
 * autoconfiguration
 */
static	int	psycho_match __P((struct device *, struct cfdata *, void *));
static	void	psycho_attach __P((struct device *, struct device *, void *));
static	int	psycho_print __P((void *aux, const char *p));

static	void	sabre_init __P((struct psycho_softc *, struct pcibus_attach_args *));
static	void	psycho_init __P((struct psycho_softc *, struct pcibus_attach_args *));

struct cfattach psycho_ca = {
        sizeof(struct psycho_softc), psycho_match, psycho_attach
};

/*
 * "sabre" is the UltraSPARC IIi onboard PCI interface, normally connected to
 * an APB (advanced PCI bridge), which was designed specifically for the IIi.
 * the APB appears as two "simba"'s underneath the sabre.  real devices
 * typically appear on the "simba"'s only.
 *
 * a pair of "psycho"s sit on the mainbus and have real devices attached to
 * them.  they implemented in the U2P (UPA to PCI).  these two devices share
 * register space and as such need to be configured together, even though the
 * autoconfiguration will attach them separately.
 *
 * each of these appears as two usable PCI busses, though the sabre itself
 * takes pci0 in this case, leaving real devices on pci1 and pci2.  there can
 * be multiple pairs of psycho's, however, in multi-board machines.
 */
#define	ROM_PCI_NAME		"pci"
#define ROM_SABRE_MODEL		"SUNW,sabre"
#define ROM_SIMBA_MODEL		"SUNW,simba"
#define ROM_PSYCHO_MODEL	"SUNW,psycho"

static	int
psycho_match(parent, match, aux)
	struct device	*parent;
	struct cfdata	*match;
	void		*aux;
{
	struct mainbus_attach_args *ma = aux;
	char *model = getpropstring(ma->ma_node, "model");

	/* match on a name of "pci" and a sabre or a psycho */
	if (strcmp(ma->ma_name, ROM_PCI_NAME) == 0 &&
	    (strcmp(model, ROM_SABRE_MODEL) == 0 ||
	     strcmp(model, ROM_PSYCHO_MODEL) == 0))
		return (1);

	return (0);
}

static	void
psycho_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct psycho_softc *sc = (struct psycho_softc *)self;
	struct pcibus_attach_args pba;
	struct mainbus_attach_args *ma = aux;
	char *model = getpropstring(ma->ma_node, "model");

	printf("\n");

	sc->sc_node = ma->ma_node;
	sc->sc_bustag = ma->ma_bustag;
	sc->sc_dmatag = ma->ma_dmatag;

	/*
	 * pull in all the information about the psycho as we can.
	 */

	/*
	 * XXX use the prom address for the psycho registers?  we do so far.
	 */
	sc->sc_regs = (struct psychoreg *)(u_long)ma->ma_address[0];
	sc->sc_basepaddr = (paddr_t)ma->ma_reg[0].ur_paddr;

	/*
	 * call the model-specific initialisation routine.
	 */
	if (strcmp(model, ROM_SABRE_MODEL) == 0)
		sabre_init(sc, &pba);
	else if (strcmp(model, ROM_PSYCHO_MODEL) == 0)
		psycho_init(sc, &pba);
#ifdef DIAGNOSTIC
	else
		panic("psycho_attach: unknown model %s?", model);
#endif

	/*
	 * attach the pci.. note we pass PCI A tags, etc., for the sabre here.
	 */
	pba.pba_busname = "pci";
	pba.pba_flags = sc->sc_psycho_this->pp_flags;
	pba.pba_dmat = sc->sc_psycho_this->pp_dmat;
	pba.pba_iot = sc->sc_psycho_this->pp_iot;
	pba.pba_memt = sc->sc_psycho_this->pp_memt;

	config_found(self, &pba, psycho_print);
}

static	int
psycho_print(aux, p)
	void *aux;
	const char *p;
{

	if (p == NULL)
		return (UNCONF);
	return (QUIET);
}

/*
 * SUNW,sabre initialisation ..
 *	- get the sabre's ranges.  this are used for both simba's.
 *	- find the two SUNW,simba's underneath (a and b)
 *	- work out which simba is which via the bus-range property
 *	- get each simba's interrupt-map and interrupt-map-mask.
 *	- turn on the iommu
 */
static void
sabre_init(sc, pba)
	struct psycho_softc *sc;
	struct pcibus_attach_args *pba;
{
	struct psycho_pbm *pp;
	bus_space_handle_t bh;
	u_int64_t csr;
	int node;
	int sabre_br[2], simba_br[2];

	/* who? said a voice, incredulous */
	sc->sc_mode = PSYCHO_MODE_SABRE;
	printf("sabre: ");

	/* setup the PCI control register; there is only one for the sabre */
	csr = bus_space_read_8(sc->sc_bustag, (bus_space_handle_t)(u_long)
		&sc->sc_regs->psy_pcictl[0].pci_csr, 0);
	csr |= PCICTL_MRLM |
	       PCICTL_ARB_PARK |
	       PCICTL_ERRINTEN |
	       PCICTL_4ENABLE;
	csr &= ~(PCICTL_SERR |
		 PCICTL_CPU_PRIO |
		 PCICTL_ARB_PRIO |
		 PCICTL_RTRYWAIT);
	bus_space_write_8(sc->sc_bustag, &sc->sc_regs->psy_pcictl[0].pci_csr, 
		0, csr);

	/* allocate a pair of psycho_pbm's for our simba's */
	sc->sc_sabre = malloc(sizeof *pp, M_DEVBUF, M_NOWAIT);
	sc->sc_simba_a = malloc(sizeof *pp, M_DEVBUF, M_NOWAIT);
	sc->sc_simba_b = malloc(sizeof *pp, M_DEVBUF, M_NOWAIT);
	if (sc->sc_sabre == NULL || sc->sc_simba_a == NULL ||
	    sc->sc_simba_b == NULL)
		panic("could not allocate simba pbm's");

	memset(sc->sc_sabre, 0, sizeof *pp);
	memset(sc->sc_simba_a, 0, sizeof *pp);
	memset(sc->sc_simba_b, 0, sizeof *pp);

	/* grab the sabre ranges; use them for both simba's */
	psycho_get_ranges(sc->sc_node, &sc->sc_sabre->pp_range,
	    &sc->sc_sabre->pp_nrange);
	sc->sc_simba_b->pp_range = sc->sc_simba_a->pp_range =
	    sc->sc_sabre->pp_range;
	sc->sc_simba_b->pp_nrange = sc->sc_simba_a->pp_nrange =
	    sc->sc_sabre->pp_nrange;

	/* get the bus-range for the sabre.  we expect 0..2 */
	psycho_get_bus_range(sc->sc_node, sabre_br);

	pba->pba_bus = sabre_br[0];

	printf("bus range %u to %u", sabre_br[0], sabre_br[1]);

	for (node = firstchild(sc->sc_node); node; node = nextsibling(node)) {
		char *name = getpropstring(node, "name");
		char *model, who;
		struct psycho_registers *regs;
		int nregs, fn;

		if (strcmp(name, ROM_PCI_NAME) != 0)
			continue;

		model = getpropstring(node, "model");
		if (strcmp(model, ROM_SIMBA_MODEL) != 0)
			continue;

		psycho_get_bus_range(node, simba_br);
		psycho_get_registers(node, &regs, &nregs);

		fn = TAG2FN(regs->phys_hi);
		switch (fn) {
		case 0:
			pp = sc->sc_simba_a;
			who = 'a';
			pp->pp_regs = regs;
			pp->pp_nregs = nregs;
			break;
		case 1:
			pp = sc->sc_simba_b;
			who = 'b';
			pp->pp_regs = regs;
			pp->pp_nregs = nregs;
			break;
		default:
			panic("illegal simba funcion %d\n");
		}
		pp->pp_pcictl = &sc->sc_regs->psy_pcictl[0];
		/* link us in .. */
		pp->pp_sc = sc;
		
		printf("; simba %c, PCI bus %d", who, simba_br[0]);

		/* grab the simba registers, interrupt map and map mask */
		psycho_get_intmap(node, &pp->pp_intmap, &pp->pp_nintmap);
		psycho_get_intmapmask(node, &pp->pp_intmapmask);

		/* allocate our tags */
		pp->pp_memt = psycho_alloc_mem_tag(pp);
		pp->pp_iot = psycho_alloc_io_tag(pp);
		pp->pp_dmat = psycho_alloc_dma_tag(pp);
		pp->pp_flags = (pp->pp_memt ? PCI_FLAGS_MEM_ENABLED : 0) |
			       (pp->pp_iot ? PCI_FLAGS_IO_ENABLED : 0);

		/* allocate a chipset for this */
		pp->pp_pc = psycho_alloc_chipset(pp, node, &_sparc_pci_chipset);
		pp->pp_pc->busno = pp->pp_bus = simba_br[0];
	}

	/* setup the rest of the sabre pbm */
	pp = sc->sc_sabre;
	pp->pp_sc = sc;
	pp->pp_memt = sc->sc_psycho_this->pp_memt;
	pp->pp_iot = sc->sc_psycho_this->pp_iot;
	pp->pp_dmat = sc->sc_psycho_this->pp_dmat;
	pp->pp_flags = sc->sc_psycho_this->pp_flags;
	pp->pp_intmap = NULL;
	pp->pp_regs = NULL;
	pp->pp_pcictl = sc->sc_psycho_this->pp_pcictl;
	pba->pba_pc = psycho_alloc_chipset(pp, sc->sc_node,
	    sc->sc_psycho_this->pp_pc);

	printf("\n");

	/* and finally start up the IOMMU ... */
	psycho_iommu_init(sc);

	/*
	 * get us a config space tag, and punch in the physical address
	 * of the PCI configuration space.  note that we use unmapped
	 * access to PCI configuration space, relying on the bus space
	 * macros to provide the proper ASI based on the bus tag.
	 */
	sc->sc_configtag = psycho_alloc_config_tag(sc->sc_simba_a);
	if (bus_space_map2(sc->sc_bustag,
			  PCI_CONFIG_BUS_SPACE,
			  sc->sc_basepaddr + 0x01000000,
			  0x0100000,
			  0,
			  0,
			  &bh))
		panic("could not map sabre PCI configuration space");
	sc->sc_configaddr = bh;
}

/*
 * SUNW,psycho initialisation ..
 *	- XXX what do we do here?
 *
 * i think that an attaching psycho should here find it's partner psycho
 * and if they haven't been attached yet, allocate both psycho_pbm's and
 * fill them both in here, and when the partner attaches, there is little
 * to do... perhaps keep a static array of what psycho have been found so
 * far (or perhaps those that have not yet been finished).  .mrg.
 * note that the partner can be found via matching `ranges' properties.
 */
static void
psycho_init(sc, pba)
	struct psycho_softc *sc;
	struct pcibus_attach_args *pba;
{
	struct psycho_softc *osc = NULL;
	struct psycho_pbm *pp;
	bus_space_handle_t bh;
	u_int64_t csr;
	int psycho_br[2], n;
	char who;

	printf("psycho: ");

	/*
	 * OK, so the deal here is:
	 *	- given our base register address, search our sibling
	 *	  devices for a match.
	 *	- if we find a match, we are attaching an almost
	 *	  already setup PCI bus, the partner already done.
	 *	- otherwise, we are doing the hard slog.
	 */
	for (n = 0; n < psycho_cd.cd_ndevs; n++) {

		osc = (struct psycho_softc *)&psycho_cd.cd_devs[n];

		/*
		 * I am not myself.
		 */
		if (osc == sc || osc->sc_regs != sc->sc_regs)
			continue;

		/*
		 * OK, so we found a matching regs that wasn't me,
		 * so that means my IOMMU is setup.
		 */

		/* who? said a voice, incredulous */
		sc->sc_mode = PSYCHO_MODE_PSYCHO_B;	/* XXX */
		who = 'b';
		break;
	}

	if (sc->sc_mode != PSYCHO_MODE_PSYCHO_B) {
		sc->sc_mode = PSYCHO_MODE_PSYCHO_A;	/* XXX */
		who = 'a';
	}

	/* Oh, dear.  OK, lets get started */

	/* XXX: check this is OK for real psycho */
	/* setup the PCI control register */
	csr = bus_space_read_8(sc->sc_bustag, (bus_space_handle_t)(u_long)&sc->sc_regs->psy_pcictl[0].pci_csr, 0);
	csr |= PCICTL_MRLM |
	       PCICTL_ARB_PARK |
	       PCICTL_ERRINTEN |
	       PCICTL_4ENABLE;
	csr &= ~(PCICTL_SERR |
		 PCICTL_CPU_PRIO |
		 PCICTL_ARB_PRIO |
		 PCICTL_RTRYWAIT);
	bus_space_write_8(sc->sc_bustag, &sc->sc_regs->psy_pcictl[0].pci_csr, 0, csr);

	/* allocate our psycho_pbm */
	sc->sc_psycho_this = malloc(sizeof *pp, M_DEVBUF, M_NOWAIT);
	if (sc->sc_psycho_this == NULL)
		panic("could not allocate psycho pbm");
	if (osc) {
		sc->sc_psycho_other = osc->sc_psycho_this;
		osc->sc_psycho_other = sc->sc_psycho_this;
	}

	memset(sc->sc_psycho_this, 0, sizeof *pp);

	/* grab the psycho ranges */
	psycho_get_ranges(sc->sc_node, &sc->sc_psycho_this->pp_range,
	    &sc->sc_psycho_this->pp_nrange);

	/* get the bus-range for the psycho */
	psycho_get_bus_range(sc->sc_node, psycho_br);

	pba->pba_bus = psycho_br[0];

	printf("bus range %u to %u", psycho_br[0], psycho_br[1]);
	printf("; simba %c, PCI bus %d", who, psycho_br[0]);

	pp->pp_pcictl = &sc->sc_regs->psy_pcictl[0];

	/* grab the psycho registers, interrupt map and map mask */
	psycho_get_registers(sc->sc_node, &pp->pp_regs, &pp->pp_nregs);
	psycho_get_intmap(sc->sc_node, &pp->pp_intmap, &pp->pp_nintmap);
	psycho_get_intmapmask(sc->sc_node, &pp->pp_intmapmask);

	/* allocate our tags */
	pp->pp_memt = psycho_alloc_mem_tag(pp);
	pp->pp_iot = psycho_alloc_io_tag(pp);
	pp->pp_dmat = psycho_alloc_dma_tag(pp);
	pp->pp_flags = (pp->pp_memt ? PCI_FLAGS_MEM_ENABLED : 0) |
		       (pp->pp_iot ? PCI_FLAGS_IO_ENABLED : 0);

	/* allocate a chipset for this */
	pp->pp_pc = psycho_alloc_chipset(pp, sc->sc_node, &_sparc_pci_chipset);

	/* setup the rest of the psycho pbm */
	pp->pp_sc = sc;
	pba->pba_pc = psycho_alloc_chipset(pp, sc->sc_node,
	    sc->sc_psycho_this->pp_pc);

	printf("\n");

	/*
	 * and finally, if we a a psycho A, start up the IOMMU and
	 * get us a config space tag, and punch in the physical address
	 * of the PCI configuration space.  note that we use unmapped
	 * access to PCI configuration space, relying on the bus space
	 * macros to provide the proper ASI based on the bus tag.
	 */
	if (sc->sc_mode == PSYCHO_MODE_PSYCHO_A) {
		psycho_iommu_init(sc);

		sc->sc_configtag = psycho_alloc_config_tag(sc->sc_psycho_this);
		if (bus_space_map2(sc->sc_bustag,
				  PCI_CONFIG_BUS_SPACE,
				  sc->sc_basepaddr + 0x01000000,
				  0x0100000,
				  0,
				  0,
				  &bh))
			panic("could not map sabre PCI configuration space");
		sc->sc_configaddr = (paddr_t)bh;
	} else {
		/* for psycho B, we just copy the config tag and address */
		sc->sc_configtag = osc->sc_configtag;
		sc->sc_configaddr = osc->sc_configaddr;
	}
}

/*
 * PCI bus support
 */

/*
 * allocate a PCI chipset tag and set it's cookie.
 */
static pci_chipset_tag_t
psycho_alloc_chipset(pp, node, pc)
	struct psycho_pbm *pp;
	int node;
	pci_chipset_tag_t pc;
{
	pci_chipset_tag_t npc;
	
	npc = malloc(sizeof *npc, M_DEVBUF, M_NOWAIT);
	if (npc == NULL)
		panic("could not allocate pci_chipset_tag_t");
	memcpy(npc, pc, sizeof *pc);
	npc->cookie = pp;
	npc->node = node;

	return (npc);
}

/*
 * grovel the OBP for various psycho properties
 */
static void
psycho_get_bus_range(node, brp)
	int node;
	int *brp;
{
	int n;

	if (getprop(node, "bus-range", sizeof(*brp), &n, (void **)&brp))
		panic("could not get psycho bus-range");
	if (n != 2)
		panic("broken psycho bus-range");
	DPRINTF(PDB_PROM, ("psycho debug: got `bus-range' for node %08x: %u - %u\n", node, brp[0], brp[1]));
}

static void
psycho_get_ranges(node, rp, np)
	int node;
	struct psycho_ranges **rp;
	int *np;
{

	if (getprop(node, "ranges", sizeof(**rp), np, (void **)rp))
		panic("could not get psycho ranges");
	DPRINTF(PDB_PROM, ("psycho debug: got `ranges' for node %08x: %d entries\n", node, *np));
}

static void
psycho_get_registers(node, rp, np)
	int node;
	struct psycho_registers **rp;
	int *np;
{

	if (getprop(node, "reg", sizeof(**rp), np, (void **)rp))
		panic("could not get psycho registers");
	DPRINTF(PDB_PROM, ("psycho debug: got `reg' for node %08x: %d entries\n", node, *np));
}

static void
psycho_get_intmap(node, imp, np)
	int node;
	struct psycho_interrupt_map **imp;
	int *np;
{

	if (getprop(node, "interrupt-map", sizeof(**imp), np, (void **)imp))
		panic("could not get psycho interrupt-map");
	DPRINTF(PDB_PROM, ("psycho debug: got `interupt-map' for node %08x\n", node));
}

static void
psycho_get_intmapmask(node, immp)
	int node;
	struct psycho_interrupt_map_mask *immp;
{
	int n;

	if (getprop(node, "interrupt-map-mask", sizeof(*immp), &n,
	    (void **)&immp))
		panic("could not get psycho interrupt-map-mask");
	if (n != 1)
		panic("broken psycho interrupt-map-mask");
	DPRINTF(PDB_PROM, ("psycho debug: got `interrupt-map-mask' for node %08x\n", node));
}

/*
 * initialise the IOMMU..
 */
void
psycho_iommu_init(sc)
	struct psycho_softc *sc;
{
	char *name;

	/* punch in our copies */
	sc->sc_is.is_bustag = sc->sc_bustag;
	sc->sc_is.is_iommu = &sc->sc_regs->psy_iommu;
	/* IIi does not have streaming buffers */
	if (sc->sc_mode != PSYCHO_MODE_SABRE)
		sc->sc_is.is_sb = &sc->sc_regs->psy_iommu_strbuf;
	else
		sc->sc_is.is_sb = 0;

	/* 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);

	/* XXX XXX XXX FIX ME tsbsize XXX XXX XXX */
	iommu_init(name, &sc->sc_is, 0);
}

/*
 * below here is bus space and bus dma support
 */
bus_space_tag_t
psycho_alloc_bus_tag(pp, type)
	struct psycho_pbm *pp;
	int type;
{
	struct psycho_softc *sc = pp->pp_sc;
	bus_space_tag_t bt;

	bt = (bus_space_tag_t)
		malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT);
	if (bt == NULL)
		panic("could not allocate psycho bus tag");

	bzero(bt, sizeof *bt);
	bt->cookie = pp;
	bt->parent = sc->sc_bustag;
	bt->type = type;
	bt->sparc_bus_map = _psycho_bus_map;
	bt->sparc_bus_mmap = psycho_bus_mmap;
	bt->sparc_intr_establish = psycho_intr_establish;
	return (bt);
}

bus_dma_tag_t
psycho_alloc_dma_tag(pp)
	struct psycho_pbm *pp;
{
	struct psycho_softc *sc = pp->pp_sc;
	bus_dma_tag_t dt, pdt = sc->sc_dmatag;

	dt = (bus_dma_tag_t)
		malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT);
	if (dt == NULL)
		panic("could not allocate psycho dma tag");

	bzero(dt, sizeof *dt);
	dt->_cookie = pp;
	dt->_parent = pdt;
#define PCOPY(x)	dt->x = pdt->x
	PCOPY(_dmamap_create);
	PCOPY(_dmamap_destroy);
	dt->_dmamap_load = psycho_dmamap_load;
	PCOPY(_dmamap_load_mbuf);
	PCOPY(_dmamap_load_uio);
	dt->_dmamap_load_raw = psycho_dmamap_load_raw;
	dt->_dmamap_unload = psycho_dmamap_unload;
	dt->_dmamap_sync = psycho_dmamap_sync;
	dt->_dmamem_alloc = psycho_dmamem_alloc;
	dt->_dmamem_free = psycho_dmamem_free;
	dt->_dmamem_map = psycho_dmamem_map;
	dt->_dmamem_unmap = psycho_dmamem_unmap;
	PCOPY(_dmamem_mmap);
#undef	PCOPY
	return (dt);
}

/*
 * bus space support.  <sparc64/dev/psychoreg.h> has a discussion about
 * PCI physical addresses.
 */

static int get_childspace __P((int));

static int
get_childspace(type)
	int type;
{
	int ss;

	switch (type) {
	case PCI_CONFIG_BUS_SPACE:
		ss = 0x00;
		break;
	case PCI_IO_BUS_SPACE:
		ss = 0x01;
		break;
	case PCI_MEMORY_BUS_SPACE:
		ss = 0x02;
		break;
#if 0
	/* we don't do 64 bit memory space */
	case PCI_MEMORY64_BUS_SPACE:
		ss = 0x03;
		break;
#endif
	default:
		panic("get_childspace: unknown bus type");
	}

	return (ss);
}

static int
_psycho_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 psycho_pbm *pp = t->cookie;
	struct psycho_softc *sc = pp->pp_sc;
	int i, ss;

	DPRINTF(PDB_BUSMAP, ("_psycho_bus_map: type %d off %qx sz %qx flags %d va %p", t->type, offset, size, flags, vaddr));

	ss = get_childspace(t->type);
	DPRINTF(PDB_BUSMAP, (" cspace %d", ss));


	for (i = 0; i < pp->pp_nrange; i++) {
		bus_addr_t paddr;

		if (((pp->pp_range[i].cspace >> 24) & 0x03) != ss)
			continue;

		paddr = pp->pp_range[i].phys_lo + offset;
		paddr |= ((bus_addr_t)pp->pp_range[i].phys_hi<<32);
		DPRINTF(PDB_BUSMAP, ("\n_psycho_bus_map: mapping paddr space %lx offset %lx paddr %qx\n",
			       (long)ss, (long)offset, paddr));
		return (bus_space_map2(sc->sc_bustag, t->type, paddr,
					size, flags, vaddr, hp));
	}
	DPRINTF(PDB_BUSMAP, (" FAILED\n"));
	return (EINVAL);
}

static int
psycho_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;
	struct psycho_pbm *pp = t->cookie;
	struct psycho_softc *sc = pp->pp_sc;
	int i, ss;

	ss = get_childspace(t->type);

	DPRINTF(PDB_BUSMAP, ("_psycho_bus_mmap: type %d flags %d pa %qx\n", btype, flags, paddr));

	for (i = 0; i < pp->pp_nrange; i++) {
		bus_addr_t paddr;

		if (((pp->pp_range[i].cspace >> 24) & 0x03) != ss)
			continue;

		paddr = pp->pp_range[i].phys_lo + offset;
		paddr |= ((bus_addr_t)pp->pp_range[i].phys_hi<<32);
		DPRINTF(PDB_BUSMAP, ("\n_psycho_bus_mmap: mapping paddr space %lx offset %lx paddr %qx\n",
			       (long)ss, (long)offset, paddr));
		return (bus_space_mmap(sc->sc_bustag, 0, paddr,
				       flags, hp));
	}

	return (-1);
}

/*
 * interrupt mapping.  this tells what sparc ipl any given ino runs at.
 */
static int pci_ino_to_ipl_table[] = {
	0, 0, 0, 0,	/* PCI A, Slot 0, INTA#/B#/C#/D# */
	0, 0, 0, 0,	/* PCI A, Slot 1, INTA#/B#/C#/D# */
	0, 0, 0, 0,	/* PCI A, Slot 2, INTA#/B#/C#/D# (unavailable) */
	0, 0, 0, 0,	/* PCI A, Slot 3, INTA#/B#/C#/D# (unavailable) */
	0, 0, 0, 0,	/* PCI B, Slot 0, INTA#/B#/C#/D# */
	0, 0, 0, 0,	/* PCI B, Slot 0, INTA#/B#/C#/D# */
	0, 0, 0, 0,	/* PCI B, Slot 2, INTA#/B#/C#/D# */
	0, 0, 0, 0,	/* PCI B, Slot 3, INTA#/B#/C#/D# */
	4,		/* SCSI */
	6,		/* Ethernet */
	3,		/* Parallel */
	9,		/* Audio Record */
	9,		/* Audio Playback */
	14,		/* Power Fail */
	4,		/* Keyboard/Mouse/Serial */
	8,		/* Floppy */
	14,		/* Thermal Warning */
	12,		/* Keyboard */
	12,		/* Mouse */
	12,		/* Serial */
	0,		/* Reserved */
	0,		/* Reserved */
	14,		/* Uncorrectable ECC error */
	14,		/* Correctable ECC error */
	14,		/* PCI A bus error */
	14,		/* PCI B bus error */
	14,		/* power management */
};

#ifdef NOT_DEBUG
static struct psycho_pbm *ppbm;
#endif

int
psycho_intr_map(tag, pin, line, ihp)
	pcitag_t tag;
	int pin;
	int line;
	pci_intr_handle_t *ihp;
{

	if (line < 0 || line > 0x32)
		panic("psycho_intr_map: line line < 0 || line > 0x32");

	/* UltraSPARC IIi does not use this register, but we have set it */
	(*ihp) = line;
	return (0);
}

/*
 * install an interrupt handler for a PCI device
 */
void *
psycho_intr_establish(t, level, flags, handler, arg)
	bus_space_tag_t t;
	int level;
	int flags;
	int (*handler) __P((void *));
	void *arg;
{
	struct psycho_pbm *pp = t->cookie;
	struct psycho_softc *sc = pp->pp_sc;
	struct intrhand *ih;
	int ino;
	long vec = level; 

#ifdef NOT_DEBUG
	if (!ppbm)
		ppbm = pp;
#endif
	ih = (struct intrhand *)
		malloc(sizeof(struct intrhand), M_DEVBUF, M_NOWAIT);
	if (ih == NULL)
		return (NULL);

	DPRINTF(PDB_INTR, ("\npsycho_intr_establish: level %x", level));
	ino = INTINO(vec);
	DPRINTF(PDB_INTR, (" ino %x", ino));
	if ((flags & BUS_INTR_ESTABLISH_SOFTINTR) == 0) {
		volatile int64_t *intrmapptr, *intrclrptr;
		int64_t intrmap = 0;
		int i;

		DPRINTF(PDB_INTR, ("\npsycho: intr %lx: %lx\nHunting for IRQ...\n",
		    (long)ino, intrlev[ino]));
		if ((ino & INTMAP_OBIO) == 0) {
			/*
			 * there are only 8 PCI interrupt INO's available
			 */
			i = INTPCIINOX(vec);

			intrmapptr = &((&sc->sc_regs->pcia_slot0_int)[i]);
			intrclrptr = &sc->sc_regs->pcia0_clr_int[i<<2];

			DPRINTF(PDB_INTR, ("- turning on PCI intr %d", i));
		} else {
			/*
			 * there are INTPCI_MAXOBINO (0x16) OBIO interrupts
			 * available here (i think).
			 */
			i = INTPCIOBINOX(vec);
			if (i > INTPCI_MAXOBINO)
				panic("ino %d", vec);

			intrmapptr = &((&sc->sc_regs->scsi_int_map)[i]);
			intrclrptr = &((&sc->sc_regs->scsi_clr_int)[i]);

			DPRINTF(PDB_INTR, ("- turning on OBIO intr %d", i));
		}

		/* Register the map and clear intr registers */
		ih->ih_map = intrmapptr;
		ih->ih_clr = intrclrptr;

		/*
		 * Read the current value as we can't change it besides the
		 * valid bit so so make sure only this bit is changed.
		 */
		intrmap = *intrmapptr;
		DPRINTF(PDB_INTR, ("; read intrmap = %016qx", intrmap));

		/* Enable the interrupt */
		intrmap |= INTMAP_V;
		DPRINTF(PDB_INTR, ("; addr of intrmapptr = %p", intrmapptr));
		DPRINTF(PDB_INTR, ("; writing intrmap = %016qx\n", intrmap));
		*intrmapptr = intrmap;
		DPRINTF(PDB_INTR, ("; reread intrmap = %016qx",
		    (intrmap = *intrmapptr)));
	}
#ifdef NOT_DEBUG
	if (psycho_debug & PDB_INTR) {
		long i;

		for (i = 0; i < 500000000; i++)
			continue;
	}
#endif

	ih->ih_fun = handler;
	ih->ih_arg = arg;
	ih->ih_number = ino | 0x7c0;
	ih->ih_pil = pci_ino_to_ipl_table[ino];
	DPRINTF(PDB_INTR, ("; installing handler %p with ino %u pil %u\n",
	    handler, (u_int)ino, (u_int)ih->ih_pil));
	intr_establish(ih->ih_pil, ih);
	return (ih);
}

/*
 * hooks into the iommu dvma calls.
 */
int
psycho_dmamap_load(t, map, buf, buflen, p, flags)
	bus_dma_tag_t t;
	bus_dmamap_t map;
	void *buf;
	bus_size_t buflen;
	struct proc *p;
	int flags;
{
	struct psycho_pbm *pp = (struct psycho_pbm *)t->_cookie;
	struct psycho_softc *sc = pp->pp_sc;

	return (iommu_dvmamap_load(t, &sc->sc_is, map, buf, buflen, p, flags));
}

void
psycho_dmamap_unload(t, map)
	bus_dma_tag_t t;
	bus_dmamap_t map;
{
	struct psycho_pbm *pp = (struct psycho_pbm *)t->_cookie;
	struct psycho_softc *sc = pp->pp_sc;

	iommu_dvmamap_unload(t, &sc->sc_is, map);
}

int
psycho_dmamap_load_raw(t, map, segs, nsegs, size, flags)
	bus_dma_tag_t t;
	bus_dmamap_t map;
	bus_dma_segment_t *segs;
	int nsegs;
	bus_size_t size;
	int flags;
{
	struct psycho_pbm *pp = (struct psycho_pbm *)t->_cookie;
	struct psycho_softc *sc = pp->pp_sc;

	return (iommu_dvmamap_load_raw(t, &sc->sc_is, map, segs, nsegs, size, flags));
}

void
psycho_dmamap_sync(t, map, offset, len, ops)
	bus_dma_tag_t t;
	bus_dmamap_t map;
	bus_addr_t offset;
	bus_size_t len;
	int ops;
{
	struct psycho_pbm *pp = (struct psycho_pbm *)t->_cookie;
	struct psycho_softc *sc = pp->pp_sc;

	iommu_dvmamap_sync(t, &sc->sc_is, map, offset, len, ops);
	bus_dmamap_sync(t->_parent, map, offset, len, ops);
}

int
psycho_dmamem_alloc(t, size, alignment, boundary, segs, nsegs, rsegs, flags)
	bus_dma_tag_t t;
	bus_size_t size;
	bus_size_t alignment;
	bus_size_t boundary;
	bus_dma_segment_t *segs;
	int nsegs;
	int *rsegs;
	int flags;
{
	struct psycho_pbm *pp = (struct psycho_pbm *)t->_cookie;
	struct psycho_softc *sc = pp->pp_sc;

	return (iommu_dvmamem_alloc(t, &sc->sc_is, size, alignment, boundary,
	    segs, nsegs, rsegs, flags));
}

void
psycho_dmamem_free(t, segs, nsegs)
	bus_dma_tag_t t;
	bus_dma_segment_t *segs;
	int nsegs;
{
	struct psycho_pbm *pp = (struct psycho_pbm *)t->_cookie;
	struct psycho_softc *sc = pp->pp_sc;

	iommu_dvmamem_free(t, &sc->sc_is, segs, nsegs);
}

int
psycho_dmamem_map(t, segs, nsegs, size, kvap, flags)
	bus_dma_tag_t t;
	bus_dma_segment_t *segs;
	int nsegs;
	size_t size;
	caddr_t *kvap;
	int flags;
{
	struct psycho_pbm *pp = (struct psycho_pbm *)t->_cookie;
	struct psycho_softc *sc = pp->pp_sc;

	return (iommu_dvmamem_map(t, &sc->sc_is, segs, nsegs, size, kvap, flags));
}

void
psycho_dmamem_unmap(t, kva, size)
	bus_dma_tag_t t;
	caddr_t kva;
	size_t size;
{
	struct psycho_pbm *pp = (struct psycho_pbm *)t->_cookie;
	struct psycho_softc *sc = pp->pp_sc;

	iommu_dvmamem_unmap(t, &sc->sc_is, kva, size);
}

#ifdef NOT_DEBUG
void
psycho_print_intr_state(void)
{
	pcitag_t tag;
	bus_space_handle_t bh;
	u_int64_t data, diag;
	struct psycho_softc *sc = ppbm->pp_sc;

	if (!ppbm) {
		printf("psycho_print_intr_state: no ppbm configured\n");
		return;
	}
	printf("psycho_print_intr_state: ");

	bh = sc->sc_basepaddr;
	bh = (bus_space_handle_t)(u_long)sc->sc_regs;
	diag = bus_space_read_8(sc->sc_configtag, bh, 0xa800);
	printf("all PCI diags is %qx\n", diag);
#if 0
	for (tag = 0xc00; tag < 0xc40; tag += 0x8) {
		data = bus_space_read_8(sc->sc_configtag, bh, tag);
		
		printf(" - PCI slot at %qx reads as %qx", bh + tag, data);
		printf(": diag %x\n", (int)(diag & 0xff));
		diag >>= 8;
	}
#endif

	diag = bus_space_read_8(sc->sc_configtag, bh, 0xa808);
	printf("\t\tall OBIO diags is %qx\n", diag);
#define START_TAG	0x1000	/* 0x1000 */
#define END_TAG		0x1018	/* 0x1088 */
	for (tag = START_TAG; tag < END_TAG; tag += 0x8) {
		data = bus_space_read_8(sc->sc_configtag, bh + tag, 0);
		
		printf(" - OBIO slot at %qx reads as %qx", bh + tag, data);
		printf(": diag %x\n", (int)(diag & 0x3));
		diag >>= 2;
	}
}
#endif