8db9ba4b9e
This allocate the best IRQ to boot-disable devices (have IRQ 0). Allocated IRQ will be used for PCI interrupt routing when ACPI is enabled. Note that verbose messaging enabled for the time being so that people can easily notice the strange behavior if it happened.
245 lines
7.6 KiB
C
245 lines
7.6 KiB
C
/*-
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2000 BSDi
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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 THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, 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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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include "acpi.h"
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#include <dev/acpica/acpivar.h>
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#include <machine/pci_cfgreg.h>
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#include <pci/pcivar.h>
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#include <pci/pcib_private.h>
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#include "pcib_if.h"
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#include <dev/acpica/acpi_pcibvar.h>
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/*
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* Hooks for the ACPI CA debugging infrastructure
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*/
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#define _COMPONENT ACPI_BUS
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ACPI_MODULE_NAME("PCI_ACPI")
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struct acpi_hpcib_softc {
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device_t ap_dev;
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ACPI_HANDLE ap_handle;
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int ap_segment; /* analagous to Alpha 'hose' */
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int ap_bus; /* bios-assigned bus number */
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ACPI_BUFFER ap_prt; /* interrupt routing table */
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};
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static int acpi_pcib_acpi_probe(device_t bus);
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static int acpi_pcib_acpi_attach(device_t bus);
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static int acpi_pcib_acpi_resume(device_t bus);
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static int acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result);
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static int acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value);
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static u_int32_t acpi_pcib_read_config(device_t dev, int bus, int slot, int func, int reg, int bytes);
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static void acpi_pcib_write_config(device_t dev, int bus, int slot, int func, int reg,
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u_int32_t data, int bytes);
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static int acpi_pcib_acpi_route_interrupt(device_t pcib,
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device_t dev, int pin);
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static device_method_t acpi_pcib_acpi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_pcib_acpi_probe),
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DEVMETHOD(device_attach, acpi_pcib_acpi_attach),
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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, acpi_pcib_acpi_resume),
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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, acpi_pcib_read_ivar),
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DEVMETHOD(bus_write_ivar, acpi_pcib_write_ivar),
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DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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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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/* pcib interface */
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DEVMETHOD(pcib_maxslots, pcib_maxslots),
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DEVMETHOD(pcib_read_config, acpi_pcib_read_config),
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DEVMETHOD(pcib_write_config, acpi_pcib_write_config),
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DEVMETHOD(pcib_route_interrupt, acpi_pcib_acpi_route_interrupt),
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{0, 0}
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};
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static driver_t acpi_pcib_acpi_driver = {
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"pcib",
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acpi_pcib_acpi_methods,
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sizeof(struct acpi_hpcib_softc),
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};
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DRIVER_MODULE(acpi_pcib, acpi, acpi_pcib_acpi_driver, pcib_devclass, 0, 0);
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static int
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acpi_pcib_acpi_probe(device_t dev)
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{
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if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) &&
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!acpi_disabled("pci") &&
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acpi_MatchHid(dev, "PNP0A03")) {
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/*
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* Set device description
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*/
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device_set_desc(dev, "ACPI Host-PCI bridge");
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return(0);
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}
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return(ENXIO);
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}
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static int
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acpi_pcib_acpi_attach(device_t dev)
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{
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struct acpi_hpcib_softc *sc;
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ACPI_STATUS status;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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sc = device_get_softc(dev);
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sc->ap_dev = dev;
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sc->ap_handle = acpi_get_handle(dev);
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/*
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* Get our base bus number by evaluating _BBN. If that doesn't work, try _ADR.
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* If this doesn't work, we assume we're bus number 0.
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*
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* XXX note that it may also not exist in the case where we are
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* meant to use a private configuration space mechanism for this bus,
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* so we should dig out our resources and check to see if we have
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* anything like that. How do we do this?
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* XXX If we have the requisite information, and if we don't think the
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* default PCI configuration space handlers can deal with this bus,
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* we should attach our own handler.
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* XXX invoke _REG on this for the PCI config space address space?
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*/
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if (ACPI_FAILURE(status = acpi_EvaluateInteger(sc->ap_handle, "_BBN", &sc->ap_bus))) {
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if (status != AE_NOT_FOUND) {
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device_printf(dev, "could not evaluate _BBN - %s\n", AcpiFormatException(status));
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return_VALUE(ENXIO);
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}
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if (ACPI_FAILURE(status = acpi_EvaluateInteger(sc->ap_handle, "_ADR", &sc->ap_bus))) {
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if (status != AE_NOT_FOUND) {
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device_printf(dev, "could not evaluate _ADR - %s\n", AcpiFormatException(status));
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return_VALUE(ENXIO);
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}
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} else {
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/* if it's not found, assume 0 */
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sc->ap_bus = 0;
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}
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}
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/*
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* Get our segment number by evaluating _SEG
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* It's OK for this to not exist.
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*/
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if (ACPI_FAILURE(status = acpi_EvaluateInteger(sc->ap_handle, "_SEG", &sc->ap_segment))) {
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if (status != AE_NOT_FOUND) {
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device_printf(dev, "could not evaluate _SEG - %s\n", AcpiFormatException(status));
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return_VALUE(ENXIO);
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}
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/* if it's not found, assume 0 */
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sc->ap_segment = 0;
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}
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return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_bus));
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}
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static int
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acpi_pcib_acpi_resume(device_t dev)
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{
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struct acpi_hpcib_softc *sc = device_get_softc(dev);
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return (acpi_pcib_resume(dev, &sc->ap_prt, sc->ap_bus));
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}
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/*
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* Support for standard PCI bridge ivars.
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*/
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static int
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acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
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{
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struct acpi_hpcib_softc *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->ap_bus;
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return(0);
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case ACPI_IVAR_HANDLE:
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*result = (uintptr_t)sc->ap_handle;
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return(0);
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}
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return(ENOENT);
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}
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static int
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acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
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{
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struct acpi_hpcib_softc *sc = device_get_softc(dev);
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switch (which) {
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case PCIB_IVAR_BUS:
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sc->ap_bus = value;
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return(0);
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}
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return(ENOENT);
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}
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static u_int32_t
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acpi_pcib_read_config(device_t dev, int bus, int slot, int func, int reg, int bytes)
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{
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return(pci_cfgregread(bus, slot, func, reg, bytes));
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}
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static void
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acpi_pcib_write_config(device_t dev, int bus, int slot, int func, int reg, u_int32_t data, int bytes)
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{
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pci_cfgregwrite(bus, slot, func, reg, data, bytes);
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}
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static int
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acpi_pcib_acpi_route_interrupt(device_t pcib, device_t dev, int pin)
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{
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struct acpi_hpcib_softc *sc;
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/* find the bridge softc */
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sc = device_get_softc(pcib);
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return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
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}
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