Driver for the Apple UniNorth Host-PCI bridge.
This is in a PowerMac-specific subdirectory as it is hoped that we will support more than just the PowerMac platform.
This commit is contained in:
Benno Rice
parent
3008110e16
commit
98f8e6c099
@ -67,3 +67,5 @@ libkern/umoddi3.c standard
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powerpc/powerpc/mp_machdep.c optional smp
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powerpc/ofw/ofw_pci.c optional pci
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powerpc/powermac/uninorth.c optional powermac pci
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@ -6,3 +6,5 @@ IPKDB opt_ipkdb.h
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SHOW_BUSYBUFS
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PANIC_REBOOT_WAIT_TIME opt_panic.h
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POWERMAC opt_platform.h
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491
sys/powerpc/powermac/uninorth.c
Normal file
491
sys/powerpc/powermac/uninorth.c
Normal file
@ -0,0 +1,491 @@
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/*
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* Copyright (C) 2002 Benno Rice.
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY Benno Rice ``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 TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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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/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_pci.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <machine/bus.h>
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#include <machine/md_var.h>
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#include <machine/nexusvar.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <powerpc/ofw/ofw_pci.h>
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#include <powerpc/powermac/uninorthvar.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include "pcib_if.h"
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#define UNINORTH_DEBUG 0
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/*
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* Device interface.
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*/
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static int uninorth_probe(device_t);
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static int uninorth_attach(device_t);
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/*
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* Bus interface.
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*/
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static int uninorth_read_ivar(device_t, device_t, int,
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uintptr_t *);
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static struct resource * uninorth_alloc_resource(device_t bus,
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device_t child, int type, int *rid, u_long start,
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u_long end, u_long count, u_int flags);
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static int uninorth_activate_resource(device_t bus, device_t child,
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int type, int rid, struct resource *res);
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/*
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* pcib interface.
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*/
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static int uninorth_maxslots(device_t);
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static u_int32_t uninorth_read_config(device_t, u_int, u_int, u_int,
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u_int, int);
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static void uninorth_write_config(device_t, u_int, u_int, u_int,
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u_int, u_int32_t, int);
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static int uninorth_route_interrupt(device_t, device_t, int);
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static bus_space_tag_t uninorth_alloc_bus_tag(struct uninorth_softc *sc,
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int type);
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/*
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* Local routines.
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*/
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static int uninorth_enable_config(struct uninorth_softc *, u_int,
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u_int, u_int, u_int);
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/*
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* Driver methods.
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*/
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static device_method_t uninorth_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, uninorth_probe),
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DEVMETHOD(device_attach, uninorth_attach),
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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_read_ivar, uninorth_read_ivar),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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DEVMETHOD(bus_alloc_resource, uninorth_alloc_resource),
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DEVMETHOD(bus_activate_resource, uninorth_activate_resource),
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/* pcib interface */
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DEVMETHOD(pcib_maxslots, uninorth_maxslots),
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DEVMETHOD(pcib_read_config, uninorth_read_config),
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DEVMETHOD(pcib_write_config, uninorth_write_config),
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DEVMETHOD(pcib_route_interrupt, uninorth_route_interrupt),
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{ 0, 0 }
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};
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static driver_t uninorth_driver = {
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"pcib",
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uninorth_methods,
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sizeof(struct uninorth_softc)
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};
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static devclass_t uninorth_devclass;
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DRIVER_MODULE(uninorth, nexus, uninorth_driver, uninorth_devclass, 0, 0);
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static int
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uninorth_probe(device_t dev)
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{
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char *type, *compatible;
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type = nexus_get_device_type(dev);
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compatible = nexus_get_compatible(dev);
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if (type == NULL || compatible == NULL)
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return (ENXIO);
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if (strcmp(type, "pci") != 0 || strcmp(compatible, "uni-north") != 0)
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return (ENXIO);
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device_set_desc(dev, "Apple UniNorth Host-PCI bridge");
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return (0);
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}
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static int
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uninorth_attach(device_t dev)
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{
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struct uninorth_softc *sc;
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phandle_t node;
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u_int32_t reg[2], busrange[2];
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struct uninorth_range *rp, *io, *mem[2];
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int nmem, i;
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node = nexus_get_node(dev);
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sc = device_get_softc(dev);
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if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8)
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return (ENXIO);
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if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
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return (ENXIO);
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sc->sc_dev = dev;
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sc->sc_node = node;
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sc->sc_addr = (vm_offset_t)pmap_mapdev(reg[0] + 0x800000, PAGE_SIZE);
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sc->sc_data = (vm_offset_t)pmap_mapdev(reg[0] + 0xc00000, PAGE_SIZE);
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sc->sc_bus = busrange[0];
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ofw_pci_fixup(dev, sc->sc_bus, node);
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bzero(sc->sc_range, sizeof(sc->sc_range));
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sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range,
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sizeof(sc->sc_range));
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if (sc->sc_nrange == -1) {
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device_printf(dev, "could not get ranges\n");
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return (ENXIO);
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}
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sc->sc_range[6].pci_hi = 0;
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io = NULL;
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nmem = 0;
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for (rp = sc->sc_range; rp->pci_hi != 0; rp++) {
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switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
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case OFW_PCI_PHYS_HI_SPACE_CONFIG:
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break;
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case OFW_PCI_PHYS_HI_SPACE_IO:
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io = rp;
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break;
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case OFW_PCI_PHYS_HI_SPACE_MEM32:
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mem[nmem] = rp;
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nmem++;
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break;
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case OFW_PCI_PHYS_HI_SPACE_MEM64:
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break;
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}
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}
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if (io == NULL) {
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device_printf(dev, "can't find io range\n");
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return (ENXIO);
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}
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sc->sc_io_rman.rm_type = RMAN_ARRAY;
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sc->sc_io_rman.rm_descr = "UniNorth PCI I/O Ports";
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if (rman_init(&sc->sc_io_rman) != 0 ||
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rman_manage_region(&sc->sc_io_rman, io->pci_lo,
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io->pci_lo + io->size_lo) != 0) {
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device_printf(dev, "failed to set up io range management\n");
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return (ENXIO);
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}
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if (nmem == 0) {
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device_printf(dev, "can't find mem ranges\n");
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return (ENXIO);
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}
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sc->sc_mem_rman.rm_type = RMAN_ARRAY;
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sc->sc_mem_rman.rm_descr = "UniNorth PCI Memory";
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if (rman_init(&sc->sc_mem_rman) != 0) {
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device_printf(dev,
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"failed to init mem range resources\n");
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return (ENXIO);
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}
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for (i = 0; i < nmem; i++) {
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if (rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo,
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mem[i]->pci_lo + mem[i]->size_lo) != 0) {
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device_printf(dev,
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"failed to set up memory range management\n");
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return (ENXIO);
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}
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}
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#if 0
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sc->sc_iot = uninorth_alloc_bus_tag(sc, PCI_IO_BUS_SPACE);
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sc->sc_memt = uninorth_alloc_bus_tag(sc, PCI_MEMORY_BUS_SPACE);
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#endif
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device_add_child(dev, "pci", device_get_unit(dev));
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return (bus_generic_attach(dev));
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}
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static int
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uninorth_maxslots(device_t dev)
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{
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return (PCI_SLOTMAX);
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}
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static u_int32_t
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uninorth_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
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int width)
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{
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struct uninorth_softc *sc;
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vm_offset_t caoff;
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sc = device_get_softc(dev);
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caoff = sc->sc_data + (reg & 0x07);
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if (uninorth_enable_config(sc, bus, slot, func, reg) != 0) {
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switch (width) {
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case 1:
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return (in8rb(caoff));
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break;
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case 2:
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return (in16rb(caoff));
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break;
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case 4:
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return (in32rb(caoff));
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break;
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}
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}
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return (0xffffffff);
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}
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static void
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uninorth_write_config(device_t dev, u_int bus, u_int slot, u_int func,
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u_int reg, u_int32_t val, int width)
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{
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struct uninorth_softc *sc;
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vm_offset_t caoff;
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sc = device_get_softc(dev);
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caoff = sc->sc_data + (reg & 0x07);
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if (uninorth_enable_config(sc, bus, slot, func, reg)) {
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switch (width) {
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case 1:
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out8rb(caoff, val);
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(void)in8rb(caoff);
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break;
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case 2:
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out16rb(caoff, val);
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(void)in16rb(caoff);
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break;
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case 4:
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out32rb(caoff, val);
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(void)in32rb(caoff);
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break;
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}
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}
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}
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static int
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uninorth_route_interrupt(device_t bus, device_t dev, int pin)
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{
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return (0);
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}
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static int
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uninorth_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
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{
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struct uninorth_softc *sc;
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sc = device_get_softc(dev);
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switch (which) {
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case PCIB_IVAR_BUS:
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*result = sc->sc_bus;
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return (0);
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break;
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}
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return (ENOENT);
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}
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static struct resource *
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uninorth_alloc_resource(device_t bus, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct uninorth_softc *sc;
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struct resource *rv;
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struct rman *rm;
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bus_space_tag_t bt;
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int needactivate;
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needactivate = flags & RF_ACTIVE;
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flags &= ~RF_ACTIVE;
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sc = device_get_softc(bus);
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switch (type) {
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case SYS_RES_MEMORY:
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rm = &sc->sc_mem_rman;
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bt = sc->sc_memt;
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break;
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case SYS_RES_IRQ:
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return (bus_alloc_resource(bus, type, rid, start, end, count,
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flags));
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break;
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default:
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device_printf(bus, "unknown resource request from %s\n",
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device_get_nameunit(child));
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return (NULL);
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}
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rv = rman_reserve_resource(rm, start, end, count, flags, child);
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if (rv == NULL) {
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device_printf(bus, "failed to reserve resource for %s\n",
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device_get_nameunit(child));
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return (NULL);
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}
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rman_set_bustag(rv, bt);
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rman_set_bushandle(rv, rman_get_start(rv));
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if (needactivate) {
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if (bus_activate_resource(child, type, *rid, rv) != 0) {
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device_printf(bus,
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"failed to activate resource for %s\n",
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device_get_nameunit(child));
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rman_release_resource(rv);
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return (NULL);
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}
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}
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return (rv);
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}
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static int
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uninorth_activate_resource(device_t bus, device_t child, int type, int rid,
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struct resource *res)
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{
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void *p;
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if (type == SYS_RES_IRQ)
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return (bus_activate_resource(bus, type, rid, res));
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if (type == SYS_RES_MEMORY) {
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p = pmap_mapdev((vm_offset_t)rman_get_start(res),
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(vm_size_t)rman_get_size(res));
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if (p == NULL)
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return (ENOMEM);
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rman_set_virtual(res, p);
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rman_set_bushandle(res, (u_long)p);
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}
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return (rman_activate_resource(res));
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}
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#if 0
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static bus_space_tag_t
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uninorth_alloc_bus_tag(struct uninorth_softc *sc, int type)
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{
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bus_space_tag_t bt;
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bt = (bus_space_tag_t)malloc(sizeof(struct bus_space_tag), M_DEVBUF,
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M_NOWAIT | M_ZERO);
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if (bt == NULL)
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panic("uninorth_alloc_bus_tag: out of memory");
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bzero(bt, sizeof(struct bus_space_tag));
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bt->cookie = sc;
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#if 0
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bt->parent = sc->sc_bustag;
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#endif
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bt->type = type;
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return (bt);
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}
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#endif
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static int
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uninorth_enable_config(struct uninorth_softc *sc, u_int bus, u_int slot,
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u_int func, u_int reg)
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{
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u_int32_t cfgval;
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if (sc->sc_bus == bus) {
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/*
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* No slots less than 11 on the primary bus
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*/
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if (slot < 11)
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return (0);
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cfgval = (1 << slot) | (func << 8) | (reg & 0xfc);
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} else {
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cfgval = (bus << 16) | (slot << 11) | (func << 8) |
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(reg & 0xfc) | 1;
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}
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do {
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out32rb(sc->sc_addr, cfgval);
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} while (in32rb(sc->sc_addr) != cfgval);
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return (1);
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}
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|
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/*
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* Driver to swallow UniNorth host bridges from the PCI bus side.
|
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*/
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static int
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unhb_probe(device_t dev)
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{
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||||
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if (pci_get_class(dev) == PCIC_BRIDGE &&
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pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
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device_set_desc(dev, "Host to PCI bridge");
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device_quiet(dev);
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return (-10000);
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}
|
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return (ENXIO);
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}
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static int
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unhb_attach(device_t dev)
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{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static device_method_t unhb_methods[] = {
|
||||
/* Device interface */
|
||||
DEVMETHOD(device_probe, unhb_probe),
|
||||
DEVMETHOD(device_attach, unhb_attach),
|
||||
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static driver_t unhb_driver = {
|
||||
"unhb",
|
||||
unhb_methods,
|
||||
1,
|
||||
};
|
||||
static devclass_t unhb_devclass;
|
||||
|
||||
DRIVER_MODULE(unhb, pci, unhb_driver, unhb_devclass, 0, 0);
|
||||
55
sys/powerpc/powermac/uninorthvar.h
Normal file
55
sys/powerpc/powermac/uninorthvar.h
Normal file
@ -0,0 +1,55 @@
|
||||
/*
|
||||
* Copyright (C) 2002 Benno Rice.
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``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 TOOLS GMBH 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#ifndef _POWERPC_POWERMAC_UNINORTHVAR_H_
|
||||
#define _POWERPC_POWERMAC_UNINORTHVAR_H_
|
||||
|
||||
struct uninorth_range {
|
||||
u_int32_t pci_hi;
|
||||
u_int32_t pci_mid;
|
||||
u_int32_t pci_lo;
|
||||
u_int32_t host;
|
||||
u_int32_t size_hi;
|
||||
u_int32_t size_lo;
|
||||
};
|
||||
|
||||
struct uninorth_softc {
|
||||
device_t sc_dev;
|
||||
phandle_t sc_node;
|
||||
vm_offset_t sc_addr;
|
||||
vm_offset_t sc_data;
|
||||
int sc_bus;
|
||||
struct uninorth_range sc_range[6];
|
||||
int sc_nrange;
|
||||
struct rman sc_io_rman;
|
||||
struct rman sc_mem_rman;
|
||||
bus_space_tag_t sc_iot;
|
||||
bus_space_tag_t sc_memt;
|
||||
bus_dma_tag_t sc_dmat;
|
||||
};
|
||||
|
||||
#endif /* _POWERPC_POWERMAC_UNINORTHVAR_H_ */
|
||||
Loading…
Reference in New Issue
Block a user