03adf4aad1
(`SUNW,sabre') for now, and it doesn't really quite work there yet anyway. the bus space/dma code is cloned from the sbus driver. the IOMMU code also is cloned from the sbus code, but separated out into iommu.c so that we can share it with the sbus driver. hopefully, much of the bus space/dma code can also be re-shared with the sbus driver and the ebus driver but for now these copies will do. support for the real UltraSPARC PCI (`SUNW,psycho') is unwritten, though most of this code is shared with it. we can probe PCI config space and try to configue devices, but interrupts don't work yet...
157 lines
4.8 KiB
C
157 lines
4.8 KiB
C
/* $NetBSD: simba.c,v 1.1 1999/06/04 13:42:15 mrg Exp $ */
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/*
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* Copyright (c) 1996, 1998 Christopher G. Demetriou. 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 Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: NetBSD: ppb.c,v 1.18 1998/06/08 06:55:57 thorpej Exp
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*/
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/*
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* this is a copy of the pci/ppb driver slightly modified to
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* work with the SUNW,simba PCI bus.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#define _SPARC_BUS_DMA_PRIVATE
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#include <machine/bus.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include <sparc64/dev/iommureg.h>
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#include <sparc64/dev/iommuvar.h>
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#include <sparc64/dev/psychoreg.h>
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#include <sparc64/dev/psychovar.h>
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#include <sparc64/dev/simbareg.h>
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static int simba_match __P((struct device *, struct cfdata *, void *));
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static void simba_attach __P((struct device *, struct device *, void *));
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static int simba_print __P((void *, const char *pnp));
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extern struct sparc_pci_chipset sparc_simba_pci_chipset;
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struct cfattach simba_ca = {
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sizeof(struct device), simba_match, simba_attach
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};
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static int
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simba_match(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 pci_attach_args *pa = aux;
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if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_SIMBA)
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return (1);
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return (0);
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}
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/*
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* XXX
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*
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* this code depends on the parent PCI bus's parent being the sabre!
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*/
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static void
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simba_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 pci_attach_args *pa = aux;
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struct psycho_softc *sc = (struct psycho_softc *)parent->dv_parent; /* XXX */
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struct psycho_pbm *pp;
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pci_chipset_tag_t pc = pa->pa_pc;
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struct pcibus_attach_args pba;
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pcireg_t busdata;
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char devinfo[256];
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
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printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
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busdata = pci_conf_read(pc, pa->pa_tag, PPB_REG_BUSINFO);
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/*
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* this uses the generic PCI bus value's, rather than the `bus-range'
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* property; that's cuz this code was stolen from dev/pci/ppb.c. we
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* might need to change to that yet. getting the prom-node might be
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* fun, but we *do* have pa->pa_pc->cookie->...
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*
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* perhaps it would be all better to probe the simba's and get all
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* the info ourselves.. we'll see.
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*/
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switch (PPB_BUSINFO_SECONDARY(busdata)) {
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default:
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printf("%s: not configured by system firmware (bus %d)\n",
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self->dv_xname, PPB_BUSINFO_SECONDARY(busdata));
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return;
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case 1: /* PCI B */
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pp = sc->sc_simba_b;
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break;
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case 2: /* PCI A */
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pp = sc->sc_simba_a;
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break;
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}
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/*
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* attach the PCI bus than hangs off of it. we use the
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* per-psycho values.
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*/
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pba.pba_busname = "pci";
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pba.pba_iot = pp->pp_iot;
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pba.pba_memt = pp->pp_memt;
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pba.pba_dmat = pp->pp_dmat;
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pba.pba_pc = pp->pp_pc;
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pba.pba_flags = pp->pp_flags;
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pba.pba_bus = PPB_BUSINFO_SECONDARY(busdata);
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pba.pba_intrswiz = pa->pa_intrswiz;
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pba.pba_intrtag = pa->pa_intrtag;
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config_found(self, &pba, simba_print);
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}
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static int
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simba_print(aux, p)
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void *aux;
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const char *p;
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{
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struct pcibus_attach_args *pba = aux;
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/* only PCIs can attach to sabre's; easy. */
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if (p)
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printf("pci at %s", p);
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printf(" bus %d", pba->pba_bus);
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return (UNCONF);
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}
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