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

155 lines
4.8 KiB
C

/* $NetBSD: simba.c,v 1.2 2000/05/24 20:27:52 eeh Exp $ */
/*
* Copyright (c) 1996, 1998 Christopher G. Demetriou. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. 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.
*
* from: NetBSD: ppb.c,v 1.18 1998/06/08 06:55:57 thorpej Exp
*/
/*
* this is a copy of the pci/ppb driver slightly modified to
* work with the SUNW,simba PCI bus.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#define _SPARC_BUS_DMA_PRIVATE
#include <machine/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <sparc64/dev/iommureg.h>
#include <sparc64/dev/iommuvar.h>
#include <sparc64/dev/psychoreg.h>
#include <sparc64/dev/psychovar.h>
#include <sparc64/dev/simbareg.h>
static int simba_match __P((struct device *, struct cfdata *, void *));
static void simba_attach __P((struct device *, struct device *, void *));
static int simba_print __P((void *, const char *pnp));
extern struct sparc_pci_chipset sparc_simba_pci_chipset;
struct cfattach simba_ca = {
sizeof(struct device), simba_match, simba_attach
};
static int
simba_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_SIMBA)
return (1);
return (0);
}
/*
* XXX
*
* this code depends on the parent PCI bus's parent being the sabre!
*/
static void
simba_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pci_attach_args *pa = aux;
struct psycho_softc *sc = (struct psycho_softc *)parent->dv_parent; /* XXX */
struct psycho_pbm *pp;
pci_chipset_tag_t pc = pa->pa_pc;
struct pcibus_attach_args pba;
pcireg_t busdata;
char devinfo[256];
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
busdata = pci_conf_read(pc, pa->pa_tag, PPB_REG_BUSINFO);
/*
* this uses the generic PCI bus value's, rather than the `bus-range'
* property; that's cuz this code was stolen from dev/pci/ppb.c. we
* might need to change to that yet. getting the prom-node might be
* fun, but we *do* have pa->pa_pc->cookie->...
*
* perhaps it would be all better to probe the simba's and get all
* the info ourselves.. we'll see.
*/
if (PPB_BUSINFO_SECONDARY(busdata) == sc->sc_simba_a->pp_bus) {
pp = sc->sc_simba_a;
} else if (PPB_BUSINFO_SECONDARY(busdata) == sc->sc_simba_b->pp_bus) {
pp = sc->sc_simba_b;
} else {
printf("%s: strange bus mapping (bus %d)\n",
self->dv_xname, PPB_BUSINFO_SECONDARY(busdata));
return;
}
/*
* attach the PCI bus than hangs off of it. we use the
* per-psycho values.
*/
pba.pba_busname = "pci";
pba.pba_iot = pp->pp_iot;
pba.pba_memt = pp->pp_memt;
pba.pba_dmat = pp->pp_dmat;
pba.pba_pc = pp->pp_pc;
pba.pba_flags = pp->pp_flags;
pba.pba_bus = PPB_BUSINFO_SECONDARY(busdata);
pba.pba_intrswiz = pa->pa_intrswiz;
pba.pba_intrtag = pa->pa_intrtag;
config_found(self, &pba, simba_print);
}
static int
simba_print(aux, p)
void *aux;
const char *p;
{
struct pcibus_attach_args *pba = aux;
/* only PCIs can attach to sabre's; easy. */
if (p)
printf("pci at %s", p);
printf(" bus %d", pba->pba_bus);
return (UNCONF);
}