30a81dd2b2
acpi_EvaluateInteger. Use acpi_EvaluateInteger instead of doing things the hard way where possible. AcpiSetSystemSleepState (unofficial) becomes AcpiEnterSleepState. Use the AcpiGbl_FADT pointer rather than searching for the FADT.
254 lines
7.8 KiB
C
254 lines
7.8 KiB
C
/*-
|
|
* Copyright (c) 2000 Michael Smith
|
|
* Copyright (c) 2000 BSDi
|
|
* 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 THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#include "opt_acpi.h"
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include "acpi.h"
|
|
|
|
#include <dev/acpica/acpivar.h>
|
|
|
|
#include <machine/pci_cfgreg.h>
|
|
#include <pci/pcivar.h>
|
|
#include "pcib_if.h"
|
|
|
|
/*
|
|
* Hooks for the ACPI CA debugging infrastructure
|
|
*/
|
|
#define _COMPONENT BUS_MANAGER
|
|
MODULE_NAME("PCIB")
|
|
|
|
struct acpi_pcib_softc {
|
|
device_t ap_dev;
|
|
ACPI_HANDLE ap_handle;
|
|
|
|
int ap_segment; /* analagous to Alpha 'hose' */
|
|
int ap_bus; /* bios-assigned bus number */
|
|
};
|
|
|
|
static int acpi_pcib_probe(device_t bus);
|
|
static int acpi_pcib_attach(device_t bus);
|
|
static int acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result);
|
|
static int acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value);
|
|
static int acpi_pcib_maxslots(device_t dev);
|
|
static u_int32_t acpi_pcib_read_config(device_t dev, int bus, int slot, int func, int reg, int bytes);
|
|
static void acpi_pcib_write_config(device_t dev, int bus, int slot, int func, int reg,
|
|
u_int32_t data, int bytes);
|
|
static int acpi_pcib_route_interrupt(device_t pcib, device_t dev, int pin);
|
|
|
|
static device_method_t acpi_pcib_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, acpi_pcib_probe),
|
|
DEVMETHOD(device_attach, acpi_pcib_attach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_print_child, bus_generic_print_child),
|
|
DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, acpi_pcib_write_ivar),
|
|
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
|
|
|
|
/* pcib interface */
|
|
DEVMETHOD(pcib_maxslots, acpi_pcib_maxslots),
|
|
DEVMETHOD(pcib_read_config, acpi_pcib_read_config),
|
|
DEVMETHOD(pcib_write_config, acpi_pcib_write_config),
|
|
DEVMETHOD(pcib_route_interrupt, acpi_pcib_route_interrupt),
|
|
|
|
{0, 0}
|
|
};
|
|
|
|
static driver_t acpi_pcib_driver = {
|
|
"acpi_pcib",
|
|
acpi_pcib_methods,
|
|
sizeof(struct acpi_pcib_softc),
|
|
};
|
|
|
|
devclass_t acpi_pcib_devclass;
|
|
DRIVER_MODULE(acpi_pcib, acpi, acpi_pcib_driver, acpi_pcib_devclass, 0, 0);
|
|
|
|
static int
|
|
acpi_pcib_probe(device_t dev)
|
|
{
|
|
|
|
if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) &&
|
|
!acpi_disabled("pci") &&
|
|
acpi_MatchHid(dev, "PNP0A03")) {
|
|
|
|
/*
|
|
* Set device description
|
|
*/
|
|
device_set_desc(dev, "Host-PCI bridge");
|
|
return(0);
|
|
}
|
|
return(ENXIO);
|
|
}
|
|
|
|
static int
|
|
acpi_pcib_attach(device_t dev)
|
|
{
|
|
struct acpi_pcib_softc *sc;
|
|
device_t child;
|
|
ACPI_STATUS status;
|
|
int result;
|
|
|
|
FUNCTION_TRACE(__FUNCTION__);
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->ap_dev = dev;
|
|
sc->ap_handle = acpi_get_handle(dev);
|
|
|
|
/*
|
|
* Don't attach if we're not really there.
|
|
*
|
|
* XXX this isn't entirely correct, since we may be a PCI bus
|
|
* on a hot-plug docking station, etc.
|
|
*/
|
|
if (!acpi_DeviceIsPresent(dev))
|
|
return_VALUE(ENXIO);
|
|
|
|
/*
|
|
* Get our segment number by evaluating _SEG
|
|
* It's OK for this to not exist.
|
|
*/
|
|
if ((status = acpi_EvaluateInteger(sc->ap_handle, "_SEG", &sc->ap_segment)) != AE_OK) {
|
|
if (status != AE_NOT_FOUND) {
|
|
device_printf(dev, "could not evaluate _SEG - %s\n", acpi_strerror(status));
|
|
return_VALUE(ENXIO);
|
|
}
|
|
/* if it's not found, assume 0 */
|
|
sc->ap_segment = 0;
|
|
}
|
|
|
|
/*
|
|
* Get our base bus number by evaluating _BBN
|
|
* If this doesn't exist, we assume we're bus number 0.
|
|
*
|
|
* XXX note that it may also not exist in the case where we are
|
|
* meant to use a private configuration space mechanism for this bus,
|
|
* so we should dig out our resources and check to see if we have
|
|
* anything like that. How do we do this?
|
|
* XXX If we have the requisite information, and if we don't think the
|
|
* default PCI configuration space handlers can deal with this bus,
|
|
* we should attach our own handler.
|
|
* XXX invoke _REG on this for the PCI config space address space?
|
|
*/
|
|
if ((status = acpi_EvaluateInteger(sc->ap_handle, "_BBN", &sc->ap_bus)) != AE_OK) {
|
|
if (status != AE_NOT_FOUND) {
|
|
device_printf(dev, "could not evaluate _BBN - %s\n", acpi_strerror(status));
|
|
return_VALUE(ENXIO);
|
|
}
|
|
/* if it's not found, assume 0 */
|
|
sc->ap_bus = 0;
|
|
}
|
|
|
|
/*
|
|
* Make sure that this bus hasn't already been found. If it has, return silently
|
|
* (should we complain here?).
|
|
*/
|
|
if (devclass_get_device(devclass_find("pci"), sc->ap_bus) != NULL)
|
|
return_VALUE(0);
|
|
|
|
/*
|
|
* Attach the PCI bus proper.
|
|
*/
|
|
if ((child = device_add_child(dev, "pci", sc->ap_bus)) == NULL) {
|
|
device_printf(device_get_parent(dev), "couldn't attach pci bus");
|
|
return_VALUE(ENXIO);
|
|
}
|
|
|
|
/*
|
|
* Now go scan the bus.
|
|
*
|
|
* XXX It would be nice to defer this and count on the nexus getting it
|
|
* after the first pass, but this does not seem to be reliable.
|
|
*/
|
|
result = bus_generic_attach(dev);
|
|
return_VALUE(result);
|
|
}
|
|
|
|
static int
|
|
acpi_pcib_maxslots(device_t dev)
|
|
{
|
|
return(31);
|
|
}
|
|
|
|
static int
|
|
acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
|
|
{
|
|
struct acpi_pcib_softc *sc = device_get_softc(dev);
|
|
|
|
switch (which) {
|
|
case PCIB_IVAR_BUS:
|
|
*result = sc->ap_bus;
|
|
return(0);
|
|
}
|
|
return(ENOENT);
|
|
}
|
|
|
|
static int
|
|
acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
|
|
{
|
|
struct acpi_pcib_softc *sc = device_get_softc(dev);
|
|
|
|
switch (which) {
|
|
case PCIB_IVAR_BUS:
|
|
sc->ap_bus = value;
|
|
return(0);
|
|
}
|
|
return(ENOENT);
|
|
}
|
|
|
|
static u_int32_t
|
|
acpi_pcib_read_config(device_t dev, int bus, int slot, int func, int reg, int bytes)
|
|
{
|
|
return(pci_cfgregread(bus, slot, func, reg, bytes));
|
|
}
|
|
|
|
static void
|
|
acpi_pcib_write_config(device_t dev, int bus, int slot, int func, int reg, u_int32_t data, int bytes)
|
|
{
|
|
pci_cfgregwrite(bus, slot, func, reg, data, bytes);
|
|
}
|
|
|
|
static int
|
|
acpi_pcib_route_interrupt(device_t pcib, device_t dev, int pin)
|
|
{
|
|
/* XXX this is not the right way to do this! */
|
|
pci_cfgregopen();
|
|
return(pci_cfgintr(pci_get_bus(dev), pci_get_slot(dev), pin));
|
|
}
|