566 lines
14 KiB
C
566 lines
14 KiB
C
/*
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* Copyright 2002 by Peter Grehan. 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. 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,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Driver for KeyLargo/Pangea, the MacPPC south bridge ASIC.
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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/malloc.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/vmparam.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/pmap.h>
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#include <machine/resource.h>
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#include <dev/ofw/openfirm.h>
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#include <powerpc/powermac/maciovar.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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static MALLOC_DEFINE(M_MACIO, "macio", "macio device information");
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static int macio_probe(device_t);
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static int macio_attach(device_t);
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static int macio_print_child(device_t dev, device_t child);
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static void macio_probe_nomatch(device_t, device_t);
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static int macio_read_ivar(device_t, device_t, int, uintptr_t *);
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static int macio_write_ivar(device_t, device_t, int, uintptr_t);
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static struct resource *macio_alloc_resource(device_t, device_t, int, int *,
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u_long, u_long, u_long, u_int);
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static int macio_activate_resource(device_t, device_t, int, int,
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struct resource *);
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static int macio_deactivate_resource(device_t, device_t, int, int,
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struct resource *);
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static int macio_release_resource(device_t, device_t, int, int,
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struct resource *);
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static struct resource_list *macio_get_resource_list (device_t, device_t);
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/*
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* Bus interface definition
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*/
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static device_method_t macio_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, macio_probe),
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DEVMETHOD(device_attach, macio_attach),
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DEVMETHOD(device_detach, bus_generic_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* Bus interface */
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DEVMETHOD(bus_print_child, macio_print_child),
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DEVMETHOD(bus_probe_nomatch, macio_probe_nomatch),
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DEVMETHOD(bus_read_ivar, macio_read_ivar),
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DEVMETHOD(bus_write_ivar, macio_write_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, macio_alloc_resource),
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DEVMETHOD(bus_release_resource, macio_release_resource),
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DEVMETHOD(bus_activate_resource, macio_activate_resource),
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DEVMETHOD(bus_deactivate_resource, macio_deactivate_resource),
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DEVMETHOD(bus_get_resource_list, macio_get_resource_list),
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{ 0, 0 }
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};
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static driver_t macio_pci_driver = {
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"macio",
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macio_methods,
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sizeof(struct macio_softc)
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};
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devclass_t macio_devclass;
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DRIVER_MODULE(macio, pci, macio_pci_driver, macio_devclass, 0, 0);
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/*
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* PCI ID search table
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*/
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static struct macio_pci_dev {
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u_int32_t mpd_devid;
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char *mpd_desc;
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} macio_pci_devlist[] = {
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{ 0x0025106b, "Pangea I/O Controller" },
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{ 0x0022106b, "KeyLargo I/O Controller" },
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{ 0, NULL }
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};
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/*
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* Devices to exclude from the probe
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* XXX some of these may be required in the future...
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*/
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#define MACIO_QUIRK_IGNORE 0x00000001
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#define MACIO_QUIRK_CHILD_HAS_INTR 0x00000002
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struct macio_quirk_entry {
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const char *mq_name;
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int mq_quirks;
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};
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static struct macio_quirk_entry macio_quirks[] = {
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{ "interrupt-controller", MACIO_QUIRK_IGNORE },
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{ "escc-legacy", MACIO_QUIRK_IGNORE },
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{ "timer", MACIO_QUIRK_IGNORE },
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{ "escc", MACIO_QUIRK_CHILD_HAS_INTR },
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{ NULL, 0 }
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};
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static int
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macio_get_quirks(const char *name)
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{
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struct macio_quirk_entry *mqe;
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for (mqe = macio_quirks; mqe->mq_name != NULL; mqe++)
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if (strcmp(name, mqe->mq_name) == 0)
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return (mqe->mq_quirks);
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return (0);
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}
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/*
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* Add an interrupt to the dev's resource list if present
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*/
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static void
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macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo)
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{
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int intr;
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if (dinfo->mdi_ninterrupts >= 5) {
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printf("macio: device has more than 5 interrupts\n");
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return;
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}
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if (OF_getprop(devnode, "interrupts", &intr, sizeof(intr)) == -1) {
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if (OF_getprop(devnode, "AAPL,interrupts", &intr,
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sizeof(intr)) == -1)
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return;
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}
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if (intr == -1)
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return;
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resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
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dinfo->mdi_ninterrupts, intr, intr, 1);
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dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = intr;
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dinfo->mdi_ninterrupts++;
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}
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static void
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macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo)
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{
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struct macio_reg *reg;
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int i, nreg;
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nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)®);
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if (nreg == -1)
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return;
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dinfo->mdi_nregs = nreg;
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dinfo->mdi_regs = reg;
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for (i = 0; i < nreg; i++) {
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resource_list_add(&dinfo->mdi_resources, SYS_RES_MEMORY, i,
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reg[i].mr_base, reg[i].mr_base + reg[i].mr_size,
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reg[i].mr_size);
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}
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}
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/*
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* PCI probe
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*/
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static int
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macio_probe(device_t dev)
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{
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int i;
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u_int32_t devid;
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devid = pci_get_devid(dev);
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for (i = 0; macio_pci_devlist[i].mpd_desc != NULL; i++) {
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if (devid == macio_pci_devlist[i].mpd_devid) {
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device_set_desc(dev, macio_pci_devlist[i].mpd_desc);
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return (0);
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}
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}
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return (ENXIO);
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}
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/*
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* PCI attach: scan OpenFirmware child nodes, and attach these as children
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* of the macio bus
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*/
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static int
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macio_attach(device_t dev)
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{
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struct macio_softc *sc;
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struct macio_devinfo *dinfo;
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phandle_t root;
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phandle_t child;
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phandle_t subchild;
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device_t cdev;
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u_int reg[3];
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char *name, *type;
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int quirks;
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sc = device_get_softc(dev);
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root = sc->sc_node = OF_finddevice("mac-io");
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/*
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* Locate the device node and it's base address
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*/
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if (OF_getprop(root, "assigned-addresses",
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reg, sizeof(reg)) < sizeof(reg)) {
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return (ENXIO);
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}
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sc->sc_base = reg[2];
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sc->sc_size = MACIO_REG_SIZE;
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sc->sc_mem_rman.rm_type = RMAN_ARRAY;
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sc->sc_mem_rman.rm_descr = "MacIO Device 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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rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size);
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/*
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* Iterate through the sub-devices
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*/
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for (child = OF_child(root); child != 0; child = OF_peer(child)) {
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OF_getprop_alloc(child, "name", 1, (void **)&name);
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OF_getprop_alloc(child, "device_type", 1, (void **)&type);
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quirks = macio_get_quirks(name);
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if ((quirks & MACIO_QUIRK_IGNORE) != 0) {
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free(name, M_OFWPROP);
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free(type, M_OFWPROP);
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continue;
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}
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cdev = device_add_child(dev, NULL, -1);
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if (cdev != NULL) {
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dinfo = malloc(sizeof(*dinfo), M_MACIO, M_WAITOK);
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memset(dinfo, 0, sizeof(*dinfo));
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resource_list_init(&dinfo->mdi_resources);
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dinfo->mdi_node = child;
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dinfo->mdi_name = name;
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dinfo->mdi_device_type = type;
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dinfo->mdi_ninterrupts = 0;
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macio_add_intr(child, dinfo);
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macio_add_reg(child, dinfo);
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if ((quirks & MACIO_QUIRK_CHILD_HAS_INTR) != 0) {
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for (subchild = OF_child(child); subchild != 0;
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subchild = OF_peer(subchild)) {
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macio_add_intr(subchild, dinfo);
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}
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}
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device_set_ivars(cdev, dinfo);
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} else {
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free(name, M_OFWPROP);
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free(type, M_OFWPROP);
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}
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}
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return (bus_generic_attach(dev));
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}
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static int
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macio_print_child(device_t dev, device_t child)
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{
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struct macio_devinfo *dinfo;
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struct resource_list *rl;
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int retval = 0;
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dinfo = device_get_ivars(child);
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rl = &dinfo->mdi_resources;
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retval += bus_print_child_header(dev, child);
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retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
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retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
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retval += bus_print_child_footer(dev, child);
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return (retval);
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}
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static void
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macio_probe_nomatch(device_t dev, device_t child)
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{
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struct macio_devinfo *dinfo;
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struct resource_list *rl;
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if (bootverbose) {
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dinfo = device_get_ivars(child);
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rl = &dinfo->mdi_resources;
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device_printf(dev, "<%s, %s>", macio_get_devtype(child),
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macio_get_name(child));
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resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
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resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
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printf(" (no driver attached)\n");
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}
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}
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static int
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macio_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
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{
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struct macio_devinfo *dinfo;
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if ((dinfo = device_get_ivars(child)) == 0)
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return (ENOENT);
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switch (which) {
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case MACIO_IVAR_NODE:
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*result = dinfo->mdi_node;
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break;
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case MACIO_IVAR_NAME:
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*result = (uintptr_t)dinfo->mdi_name;
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break;
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case MACIO_IVAR_DEVTYPE:
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*result = (uintptr_t)dinfo->mdi_device_type;
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break;
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case MACIO_IVAR_NREGS:
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*result = dinfo->mdi_nregs;
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break;
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case MACIO_IVAR_REGS:
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*result = (uintptr_t)dinfo->mdi_regs;
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break;
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default:
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return (ENOENT);
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}
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return (0);
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}
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static int
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macio_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
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{
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return (EINVAL);
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}
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static struct resource *
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macio_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 macio_softc *sc;
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int needactivate;
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struct resource *rv;
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struct rman *rm;
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bus_space_tag_t tagval;
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u_long adjstart, adjend, adjcount;
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struct macio_devinfo *dinfo;
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struct resource_list_entry *rle;
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sc = device_get_softc(bus);
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dinfo = device_get_ivars(child);
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needactivate = flags & RF_ACTIVE;
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flags &= ~RF_ACTIVE;
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switch (type) {
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case SYS_RES_MEMORY:
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case SYS_RES_IOPORT:
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rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_MEMORY,
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*rid);
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if (rle == NULL) {
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device_printf(bus, "no rle for %s memory %d\n",
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device_get_nameunit(child), *rid);
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return (NULL);
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}
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if (start < rle->start)
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adjstart = rle->start;
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else if (start > rle->end)
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adjstart = rle->end;
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else
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adjstart = start;
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if (end < rle->start)
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adjend = rle->start;
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else if (end > rle->end)
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adjend = rle->end;
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else
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adjend = end;
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adjcount = adjend - adjstart;
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rm = &sc->sc_mem_rman;
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tagval = PPC_BUS_SPACE_MEM;
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if (flags & PPC_BUS_SPARSE4)
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tagval |= 4;
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break;
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case SYS_RES_IRQ:
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rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_IRQ,
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*rid);
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if (rle == NULL) {
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if (dinfo->mdi_ninterrupts >= 5) {
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device_printf(bus,
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"%s has more than 5 interrupts\n",
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device_get_nameunit(child));
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return (NULL);
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}
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resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
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dinfo->mdi_ninterrupts, start, start, 1);
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dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = start;
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dinfo->mdi_ninterrupts++;
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}
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return (resource_list_alloc(&dinfo->mdi_resources, bus, child,
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type, rid, start, end, count, 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, adjstart, adjend, adjcount, flags,
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child);
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if (rv == NULL) {
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device_printf(bus,
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"failed to reserve resource %#lx - %#lx (%#lx) for %s\n",
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adjstart, adjend, adjcount, device_get_nameunit(child));
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return (NULL);
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}
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rman_set_bustag(rv, tagval);
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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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|
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static int
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macio_release_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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if (rman_get_flags(res) & RF_ACTIVE) {
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int error = bus_deactivate_resource(child, type, rid, res);
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if (error)
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return error;
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}
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return (rman_release_resource(res));
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}
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|
|
|
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static int
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macio_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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struct macio_softc *sc;
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void *p;
|
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|
|
sc = device_get_softc(bus);
|
|
|
|
if (type == SYS_RES_IRQ)
|
|
return (bus_activate_resource(bus, type, rid, res));
|
|
|
|
if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
|
|
p = pmap_mapdev((vm_offset_t)rman_get_start(res) + sc->sc_base,
|
|
(vm_size_t)rman_get_size(res));
|
|
if (p == NULL)
|
|
return (ENOMEM);
|
|
rman_set_virtual(res, p);
|
|
rman_set_bushandle(res, (u_long)p);
|
|
}
|
|
|
|
return (rman_activate_resource(res));
|
|
}
|
|
|
|
|
|
static int
|
|
macio_deactivate_resource(device_t bus, device_t child, int type, int rid,
|
|
struct resource *res)
|
|
{
|
|
/*
|
|
* If this is a memory resource, unmap it.
|
|
*/
|
|
if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
|
|
u_int32_t psize;
|
|
|
|
psize = rman_get_size(res);
|
|
pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
|
|
}
|
|
|
|
return (rman_deactivate_resource(res));
|
|
}
|
|
|
|
|
|
static struct resource_list *
|
|
macio_get_resource_list (device_t dev, device_t child)
|
|
{
|
|
struct macio_devinfo *dinfo = device_get_ivars(child);
|
|
struct resource_list *rl = &dinfo->mdi_resources;
|
|
|
|
if (!rl)
|
|
return (NULL);
|
|
|
|
return (rl);
|
|
}
|