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freebsd-dev/sys/pci/agp_i810.c
Warner Losh d701c91325 Return BUS_PROBE_DEFAULT instead of 0.
2005-02-24 21:32:56 +00:00

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/*-
* Copyright (c) 2000 Doug Rabson
* Copyright (c) 2000 Ruslan Ermilov
* 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.
*/
/*
* Fixes for 830/845G support: David Dawes <dawes@xfree86.org>
* 852GM/855GM/865G support added by David Dawes <dawes@xfree86.org>
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_bus.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <pci/agppriv.h>
#include <pci/agpreg.h>
#include <vm/vm.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pageout.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
MALLOC_DECLARE(M_AGP);
#define READ1(off) bus_space_read_1(sc->bst, sc->bsh, off)
#define READ4(off) bus_space_read_4(sc->bst, sc->bsh, off)
#define WRITE4(off,v) bus_space_write_4(sc->bst, sc->bsh, off, v)
#define CHIP_I810 0 /* i810/i815 */
#define CHIP_I830 1 /* 830M/845G */
#define CHIP_I855 2 /* 852GM/855GM/865G */
struct agp_i810_softc {
struct agp_softc agp;
u_int32_t initial_aperture; /* aperture size at startup */
struct agp_gatt *gatt;
int chiptype; /* i810-like or i830 */
u_int32_t dcache_size; /* i810 only */
u_int32_t stolen; /* number of i830/845 gtt entries for stolen memory */
device_t bdev; /* bridge device */
struct resource *regs; /* memory mapped GC registers */
bus_space_tag_t bst; /* bus_space tag */
bus_space_handle_t bsh; /* bus_space handle */
};
static const char*
agp_i810_match(device_t dev)
{
if (pci_get_class(dev) != PCIC_DISPLAY
|| pci_get_subclass(dev) != PCIS_DISPLAY_VGA)
return NULL;
switch (pci_get_devid(dev)) {
case 0x71218086:
return ("Intel 82810 (i810 GMCH) SVGA controller");
case 0x71238086:
return ("Intel 82810-DC100 (i810-DC100 GMCH) SVGA controller");
case 0x71258086:
return ("Intel 82810E (i810E GMCH) SVGA controller");
case 0x11328086:
return ("Intel 82815 (i815 GMCH) SVGA controller");
case 0x35778086:
return ("Intel 82830M (830M GMCH) SVGA controller");
case 0x25628086:
return ("Intel 82845G (845G GMCH) SVGA controller");
case 0x35828086:
switch (pci_read_config(dev, AGP_I85X_CAPID, 1)) {
case AGP_I855_GME:
return ("Intel 82855GME (855GME GMCH) SVGA controller");
case AGP_I855_GM:
return ("Intel 82855GM (855GM GMCH) SVGA controller");
case AGP_I852_GME:
return ("Intel 82852GME (852GME GMCH) SVGA controller");
case AGP_I852_GM:
return ("Intel 82852GM (852GM GMCH) SVGA controller");
default:
return ("Intel 8285xM (85xGM GMCH) SVGA controller");
}
case 0x25728086:
return ("Intel 82865G (865G GMCH) SVGA controller");
};
return NULL;
}
/*
* Find bridge device.
*/
static device_t
agp_i810_find_bridge(device_t dev)
{
device_t *children, child;
int nchildren, i;
u_int32_t devid;
/*
* Calculate bridge device's ID.
*/
devid = pci_get_devid(dev);
switch (devid) {
case 0x71218086:
case 0x71238086:
case 0x71258086:
devid -= 0x10000;
break;
case 0x11328086:
case 0x35778086:
case 0x25628086:
case 0x35828086:
case 0x25728086:
devid -= 0x20000;
break;
};
if (device_get_children(device_get_parent(dev), &children, &nchildren))
return 0;
for (i = 0; i < nchildren; i++) {
child = children[i];
if (pci_get_devid(child) == devid) {
free(children, M_TEMP);
return child;
}
}
free(children, M_TEMP);
return 0;
}
static int
agp_i810_probe(device_t dev)
{
const char *desc;
if (resource_disabled("agp", device_get_unit(dev)))
return (ENXIO);
desc = agp_i810_match(dev);
if (desc) {
device_t bdev;
u_int8_t smram;
unsigned int gcc1;
int devid = pci_get_devid(dev);
bdev = agp_i810_find_bridge(dev);
if (!bdev) {
if (bootverbose)
printf("I810: can't find bridge device\n");
return ENXIO;
}
/*
* checking whether internal graphics device has been activated.
*/
switch (devid) {
/* i810 */
case 0x71218086:
case 0x71238086:
case 0x71258086:
case 0x11328086:
smram = pci_read_config(bdev, AGP_I810_SMRAM, 1);
if ((smram & AGP_I810_SMRAM_GMS)
== AGP_I810_SMRAM_GMS_DISABLED) {
if (bootverbose)
printf("I810: disabled, not probing\n");
return ENXIO;
}
break;
/* i830 */
case 0x35778086:
case 0x35828086:
case 0x25628086:
case 0x25728086:
gcc1 = pci_read_config(bdev, AGP_I830_GCC1, 1);
if ((gcc1 & AGP_I830_GCC1_DEV2) == AGP_I830_GCC1_DEV2_DISABLED) {
if (bootverbose)
printf("I830: disabled, not probing\n");
return ENXIO;
}
break;
default:
return ENXIO;
}
device_verbose(dev);
device_set_desc(dev, desc);
return BUS_PROBE_DEFAULT;
}
return ENXIO;
}
static int
agp_i810_attach(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
struct agp_gatt *gatt;
int error, rid;
sc->bdev = agp_i810_find_bridge(dev);
if (!sc->bdev)
return ENOENT;
error = agp_generic_attach(dev);
if (error)
return error;
switch (pci_get_devid(dev)) {
case 0x71218086:
case 0x71238086:
case 0x71258086:
case 0x11328086:
sc->chiptype = CHIP_I810;
break;
case 0x35778086:
case 0x25628086:
sc->chiptype = CHIP_I830;
break;
case 0x35828086:
case 0x25728086:
sc->chiptype = CHIP_I855;
break;
};
/* Same for i810 and i830 */
rid = AGP_I810_MMADR;
sc->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (!sc->regs) {
agp_generic_detach(dev);
return ENOMEM;
}
sc->bst = rman_get_bustag(sc->regs);
sc->bsh = rman_get_bushandle(sc->regs);
sc->initial_aperture = AGP_GET_APERTURE(dev);
gatt = malloc( sizeof(struct agp_gatt), M_AGP, M_NOWAIT);
if (!gatt) {
agp_generic_detach(dev);
return ENOMEM;
}
sc->gatt = gatt;
gatt->ag_entries = AGP_GET_APERTURE(dev) >> AGP_PAGE_SHIFT;
if ( sc->chiptype == CHIP_I810 ) {
/* Some i810s have on-chip memory called dcache */
if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED)
sc->dcache_size = 4 * 1024 * 1024;
else
sc->dcache_size = 0;
/* According to the specs the gatt on the i810 must be 64k */
gatt->ag_virtual = contigmalloc( 64 * 1024, M_AGP, 0,
0, ~0, PAGE_SIZE, 0);
if (!gatt->ag_virtual) {
if (bootverbose)
device_printf(dev, "contiguous allocation failed\n");
free(gatt, M_AGP);
agp_generic_detach(dev);
return ENOMEM;
}
bzero(gatt->ag_virtual, gatt->ag_entries * sizeof(u_int32_t));
gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual);
agp_flush_cache();
/* Install the GATT. */
WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1);
} else if ( sc->chiptype == CHIP_I830 ) {
/* The i830 automatically initializes the 128k gatt on boot. */
unsigned int gcc1, pgtblctl;
gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 1);
switch (gcc1 & AGP_I830_GCC1_GMS) {
case AGP_I830_GCC1_GMS_STOLEN_512:
sc->stolen = (512 - 132) * 1024 / 4096;
break;
case AGP_I830_GCC1_GMS_STOLEN_1024:
sc->stolen = (1024 - 132) * 1024 / 4096;
break;
case AGP_I830_GCC1_GMS_STOLEN_8192:
sc->stolen = (8192 - 132) * 1024 / 4096;
break;
default:
sc->stolen = 0;
device_printf(dev, "unknown memory configuration, disabling\n");
agp_generic_detach(dev);
return EINVAL;
}
if (sc->stolen > 0)
device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4);
device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024);
/* GATT address is already in there, make sure it's enabled */
pgtblctl = READ4(AGP_I810_PGTBL_CTL);
pgtblctl |= 1;
WRITE4(AGP_I810_PGTBL_CTL, pgtblctl);
gatt->ag_physical = pgtblctl & ~1;
} else { /* CHIP_I855 */
/* The i855 automatically initializes the 128k gatt on boot. */
unsigned int gcc1, pgtblctl;
gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 1);
switch (gcc1 & AGP_I855_GCC1_GMS) {
case AGP_I855_GCC1_GMS_STOLEN_1M:
sc->stolen = (1024 - 132) * 1024 / 4096;
break;
case AGP_I855_GCC1_GMS_STOLEN_4M:
sc->stolen = (4096 - 132) * 1024 / 4096;
break;
case AGP_I855_GCC1_GMS_STOLEN_8M:
sc->stolen = (8192 - 132) * 1024 / 4096;
break;
case AGP_I855_GCC1_GMS_STOLEN_16M:
sc->stolen = (16384 - 132) * 1024 / 4096;
break;
case AGP_I855_GCC1_GMS_STOLEN_32M:
sc->stolen = (32768 - 132) * 1024 / 4096;
break;
default:
sc->stolen = 0;
device_printf(dev, "unknown memory configuration, disabling\n");
agp_generic_detach(dev);
return EINVAL;
}
if (sc->stolen > 0)
device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4);
device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024);
/* GATT address is already in there, make sure it's enabled */
pgtblctl = READ4(AGP_I810_PGTBL_CTL);
pgtblctl |= 1;
WRITE4(AGP_I810_PGTBL_CTL, pgtblctl);
gatt->ag_physical = pgtblctl & ~1;
}
/* Add a device for the drm to attach to */
if (!device_add_child( dev, "drmsub", -1 ))
printf("out of memory...\n");
return bus_generic_attach(dev);
}
static int
agp_i810_detach(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
int error;
device_t child;
error = agp_generic_detach(dev);
if (error)
return error;
/* Clear the GATT base. */
if ( sc->chiptype == CHIP_I810 ) {
WRITE4(AGP_I810_PGTBL_CTL, 0);
} else {
unsigned int pgtblctl;
pgtblctl = READ4(AGP_I810_PGTBL_CTL);
pgtblctl &= ~1;
WRITE4(AGP_I810_PGTBL_CTL, pgtblctl);
}
/* Put the aperture back the way it started. */
AGP_SET_APERTURE(dev, sc->initial_aperture);
if ( sc->chiptype == CHIP_I810 ) {
contigfree(sc->gatt->ag_virtual, 64 * 1024, M_AGP);
}
free(sc->gatt, M_AGP);
bus_release_resource(dev, SYS_RES_MEMORY,
AGP_I810_MMADR, sc->regs);
child = device_find_child( dev, "drmsub", 0 );
if (child)
device_delete_child( dev, child );
return 0;
}
static u_int32_t
agp_i810_get_aperture(device_t dev)
{
struct agp_i810_softc *sc = device_get_softc(dev);
if ( sc->chiptype == CHIP_I810 ) {
u_int16_t miscc;
miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2);
if ((miscc & AGP_I810_MISCC_WINSIZE) == AGP_I810_MISCC_WINSIZE_32)
return 32 * 1024 * 1024;
else
return 64 * 1024 * 1024;
} else if ( sc->chiptype == CHIP_I830 ) {
unsigned int gcc1;
gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2);
if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64)
return 64 * 1024 * 1024;
else
return 128 * 1024 * 1024;
} else { /* CHIP_I855 */
return 128 * 1024 * 1024;
}
}
static int
agp_i810_set_aperture(device_t dev, u_int32_t aperture)
{
struct agp_i810_softc *sc = device_get_softc(dev);
u_int16_t miscc;
if ( sc->chiptype == CHIP_I810 ) {
/*
* Double check for sanity.
*/
if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) {
device_printf(dev, "bad aperture size %d\n", aperture);
return EINVAL;
}
miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2);
miscc &= ~AGP_I810_MISCC_WINSIZE;
if (aperture == 32 * 1024 * 1024)
miscc |= AGP_I810_MISCC_WINSIZE_32;
else
miscc |= AGP_I810_MISCC_WINSIZE_64;
pci_write_config(sc->bdev, AGP_I810_MISCC, miscc, 2);
} else if ( sc->chiptype == CHIP_I830 ) {
unsigned int gcc1;
if (aperture != 64 * 1024 * 1024 && aperture != 128 * 1024 * 1024) {
device_printf(dev, "bad aperture size %d\n", aperture);
return EINVAL;
}
gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2);
gcc1 &= ~AGP_I830_GCC1_GMASIZE;
if (aperture == 64 * 1024 * 1024)
gcc1 |= AGP_I830_GCC1_GMASIZE_64;
else
gcc1 |= AGP_I830_GCC1_GMASIZE_128;
pci_write_config(sc->bdev, AGP_I830_GCC1, gcc1, 2);
} else { /* CHIP_I855 */
if (aperture != 128 * 1024 * 1024) {
device_printf(dev, "bad aperture size %d\n", aperture);
return EINVAL;
}
}
return 0;
}
static int
agp_i810_bind_page(device_t dev, int offset, vm_offset_t physical)
{
struct agp_i810_softc *sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) {
device_printf(dev, "failed: offset is 0x%08x, shift is %d, entries is %d\n", offset, AGP_PAGE_SHIFT, sc->gatt->ag_entries);
return EINVAL;
}
if ( sc->chiptype != CHIP_I810 ) {
if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) {
device_printf(dev, "trying to bind into stolen memory");
return EINVAL;
}
}
WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, physical | 1);
return 0;
}
static int
agp_i810_unbind_page(device_t dev, int offset)
{
struct agp_i810_softc *sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return EINVAL;
if ( sc->chiptype != CHIP_I810 ) {
if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) {
device_printf(dev, "trying to unbind from stolen memory");
return EINVAL;
}
}
WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 0);
return 0;
}
/*
* Writing via memory mapped registers already flushes all TLBs.
*/
static void
agp_i810_flush_tlb(device_t dev)
{
}
static int
agp_i810_enable(device_t dev, u_int32_t mode)
{
return 0;
}
static struct agp_memory *
agp_i810_alloc_memory(device_t dev, int type, vm_size_t size)
{
struct agp_i810_softc *sc = device_get_softc(dev);
struct agp_memory *mem;
if ((size & (AGP_PAGE_SIZE - 1)) != 0)
return 0;
if (sc->agp.as_allocated + size > sc->agp.as_maxmem)
return 0;
if (type == 1) {
/*
* Mapping local DRAM into GATT.
*/
if ( sc->chiptype != CHIP_I810 )
return 0;
if (size != sc->dcache_size)
return 0;
} else if (type == 2) {
/*
* Bogus mapping of a single page for the hardware cursor.
*/
if (size != AGP_PAGE_SIZE)
return 0;
}
mem = malloc(sizeof *mem, M_AGP, M_WAITOK);
mem->am_id = sc->agp.as_nextid++;
mem->am_size = size;
mem->am_type = type;
if (type != 1)
mem->am_obj = vm_object_allocate(OBJT_DEFAULT,
atop(round_page(size)));
else
mem->am_obj = 0;
if (type == 2) {
/*
* Allocate and wire down the page now so that we can
* get its physical address.
*/
vm_page_t m;
VM_OBJECT_LOCK(mem->am_obj);
m = vm_page_grab(mem->am_obj, 0, VM_ALLOC_NOBUSY |
VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
VM_OBJECT_UNLOCK(mem->am_obj);
mem->am_physical = VM_PAGE_TO_PHYS(m);
} else {
mem->am_physical = 0;
}
mem->am_offset = 0;
mem->am_is_bound = 0;
TAILQ_INSERT_TAIL(&sc->agp.as_memory, mem, am_link);
sc->agp.as_allocated += size;
return mem;
}
static int
agp_i810_free_memory(device_t dev, struct agp_memory *mem)
{
struct agp_i810_softc *sc = device_get_softc(dev);
if (mem->am_is_bound)
return EBUSY;
if (mem->am_type == 2) {
/*
* Unwire the page which we wired in alloc_memory.
*/
vm_page_t m;
VM_OBJECT_LOCK(mem->am_obj);
m = vm_page_lookup(mem->am_obj, 0);
VM_OBJECT_UNLOCK(mem->am_obj);
vm_page_lock_queues();
vm_page_unwire(m, 0);
vm_page_unlock_queues();
}
sc->agp.as_allocated -= mem->am_size;
TAILQ_REMOVE(&sc->agp.as_memory, mem, am_link);
if (mem->am_obj)
vm_object_deallocate(mem->am_obj);
free(mem, M_AGP);
return 0;
}
static int
agp_i810_bind_memory(device_t dev, struct agp_memory *mem,
vm_offset_t offset)
{
struct agp_i810_softc *sc = device_get_softc(dev);
vm_offset_t i;
if (mem->am_type != 1)
return agp_generic_bind_memory(dev, mem, offset);
if ( sc->chiptype != CHIP_I810 )
return EINVAL;
for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) {
WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4,
i | 3);
}
return 0;
}
static int
agp_i810_unbind_memory(device_t dev, struct agp_memory *mem)
{
struct agp_i810_softc *sc = device_get_softc(dev);
vm_offset_t i;
if (mem->am_type != 1)
return agp_generic_unbind_memory(dev, mem);
if ( sc->chiptype != CHIP_I810 )
return EINVAL;
for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE)
WRITE4(AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, 0);
return 0;
}
static int
agp_i810_print_child(device_t dev, device_t child)
{
int retval = 0;
retval += bus_print_child_header(dev, child);
retval += printf(": (child of agp_i810.c)");
retval += bus_print_child_footer(dev, child);
return retval;
}
static device_method_t agp_i810_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, agp_i810_probe),
DEVMETHOD(device_attach, agp_i810_attach),
DEVMETHOD(device_detach, agp_i810_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* AGP interface */
DEVMETHOD(agp_get_aperture, agp_i810_get_aperture),
DEVMETHOD(agp_set_aperture, agp_i810_set_aperture),
DEVMETHOD(agp_bind_page, agp_i810_bind_page),
DEVMETHOD(agp_unbind_page, agp_i810_unbind_page),
DEVMETHOD(agp_flush_tlb, agp_i810_flush_tlb),
DEVMETHOD(agp_enable, agp_i810_enable),
DEVMETHOD(agp_alloc_memory, agp_i810_alloc_memory),
DEVMETHOD(agp_free_memory, agp_i810_free_memory),
DEVMETHOD(agp_bind_memory, agp_i810_bind_memory),
DEVMETHOD(agp_unbind_memory, agp_i810_unbind_memory),
/* bus methods */
DEVMETHOD(bus_print_child, agp_i810_print_child),
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),
{ 0, 0 }
};
static driver_t agp_i810_driver = {
"agp",
agp_i810_methods,
sizeof(struct agp_i810_softc),
};
static devclass_t agp_devclass;
DRIVER_MODULE(agp_i810, pci, agp_i810_driver, agp_devclass, 0, 0);
MODULE_DEPEND(agp_i810, agp, 1, 1, 1);
MODULE_DEPEND(agp_i810, pci, 1, 1, 1);
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