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/*-
* 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.
*
* $FreeBSD$
*/
/*
* XXX This is all pretty dubious, since we really want the APIC and co.
* up and running long before attaching interrupts, etc.
*/
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include "acpi.h"
#include <dev/acpica/acpivar.h>
#define APIC_MAGIC 0x43495041 /* "APIC" */
struct acpi_apic_softc {
device_t apic_dev;
IO_APIC *apic_ioapic;
};
static void acpi_apic_identify(driver_t *driver, device_t bus);
static int acpi_apic_probe(device_t dev);
static int acpi_apic_attach(device_t dev);
static device_method_t acpi_apic_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, acpi_apic_identify),
DEVMETHOD(device_probe, acpi_apic_probe),
DEVMETHOD(device_attach, acpi_apic_attach),
{0, 0}
};
static driver_t acpi_apic_driver = {
"acpi_apic",
acpi_apic_methods,
sizeof(struct acpi_apic_softc),
};
devclass_t acpi_apic_devclass;
DRIVER_MODULE(acpi_apic, acpi, acpi_apic_driver, acpi_apic_devclass, 0, 0);
static void
acpi_apic_identify(driver_t *driver, device_t bus)
{
ACPI_BUFFER buf;
ACPI_STATUS status;
APIC_HEADER *hdr;
APIC_TABLE *tbl;
device_t child;
int len;
void *private;
#if 1
return;
#else /* broken by new ACPICA update that doesn't support the APIC table */
/*
* Perform the tedious double-get to fetch the actual table.
*/
buf.Length = 0;
buf.Pointer = NULL;
if ((status = AcpiGetTable(ACPI_TABLE_APIC, 1, &buf)) != AE_BUFFER_OVERFLOW) {
if (status != AE_NOT_EXIST)
device_printf(bus, "error sizing APIC table - %s\n", acpi_strerror(status));
return;
}
if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL)
return;
if ((status = AcpiGetTable(ACPI_TABLE_APIC, 1, &buf)) != AE_OK) {
device_printf(bus, "error fetching APIC table - %s\n", acpi_strerror(status));
return;
}
/*
* Scan the tables, create child devices for each I/O APIC found
*/
tbl = (APIC_TABLE *)buf.Pointer;
len = tbl->header.Length - sizeof(APIC_TABLE);
hdr = (APIC_HEADER *)((char *)buf.Pointer + sizeof(APIC_TABLE));
while(len > 0) {
if (hdr->Length > len) {
device_printf(bus, "APIC header corrupt (claims %d bytes where only %d left in structure)\n",
hdr->Length, len);
break;
}
switch (hdr->Type) {
case APIC_IO:
if ((child = BUS_ADD_CHILD(bus, 0, "acpi_apic", -1)) == NULL) {
device_printf(bus, "could not create I/O APIC device");
break;
}
if ((private = AcpiOsAllocate(hdr->Length)) == NULL) {
device_printf(bus, "could not allocate memory for APIC child");
break;
}
bcopy(hdr, private, hdr->Length);
acpi_set_magic(child, APIC_MAGIC);
acpi_set_private(child, private);
device_set_desc(child, "I/O APIC");
break;
}
len -= hdr->Length;
hdr = (APIC_HEADER *)((char *)hdr + hdr->Length);
}
AcpiOsFree(buf.Pointer);
#endif
}
static int
acpi_apic_probe(device_t dev)
{
if (acpi_get_magic(dev) == APIC_MAGIC)
return(0);
return(ENXIO);
}
static int
acpi_apic_attach(device_t dev)
{
struct acpi_apic_softc *sc;
sc = device_get_softc(dev);
sc->apic_dev = dev;
/*
* Fetch our parameters.
*/
sc->apic_ioapic = acpi_get_private(dev);
device_printf(dev, "I/O APIC ID %d at 0x%08x vectors 0%x\n",
sc->apic_ioapic->IoApicId, sc->apic_ioapic->IoApicAddress, sc->apic_ioapic->Vector);
return(0);
}
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