2 * Copyright (c) 2000 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/malloc.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
39 #include <sys/ioccom.h>
40 #include <sys/agpio.h>
42 #include <sys/mutex.h>
45 #include <dev/pci/pcivar.h>
46 #include <dev/pci/pcireg.h>
47 #include <pci/agppriv.h>
48 #include <pci/agpvar.h>
49 #include <pci/agpreg.h>
52 #include <vm/vm_object.h>
53 #include <vm/vm_page.h>
54 #include <vm/vm_pageout.h>
57 #include <machine/md_var.h>
58 #include <machine/bus.h>
59 #include <machine/resource.h>
62 MODULE_VERSION(agp, 1);
64 MALLOC_DEFINE(M_AGP, "agp", "AGP data structures");
67 static d_open_t agp_open;
68 static d_close_t agp_close;
69 static d_ioctl_t agp_ioctl;
70 static d_mmap_t agp_mmap;
72 static struct cdevsw agp_cdevsw = {
73 .d_version = D_VERSION,
74 .d_flags = D_NEEDGIANT,
82 static devclass_t agp_devclass;
83 #define KDEV2DEV(kdev) devclass_get_device(agp_devclass, minor(kdev))
85 /* Helper functions for implementing chipset mini drivers. */
90 #if defined(__i386__) || defined(__amd64__)
94 /* FIXME: This is most likely not correct as it doesn't flush CPU
95 * write caches, but we don't have a facility to do that and
96 * this is all linux does, too */
102 agp_find_caps(device_t dev)
107 if (pci_find_extcap(dev, PCIY_AGP, &capreg) != 0)
113 * Find an AGP display device (if any).
116 agp_find_display(void)
118 devclass_t pci = devclass_find("pci");
119 device_t bus, dev = 0;
121 int busnum, numkids, i;
123 for (busnum = 0; busnum < devclass_get_maxunit(pci); busnum++) {
124 bus = devclass_get_device(pci, busnum);
127 device_get_children(bus, &kids, &numkids);
128 for (i = 0; i < numkids; i++) {
130 if (pci_get_class(dev) == PCIC_DISPLAY
131 && pci_get_subclass(dev) == PCIS_DISPLAY_VGA)
132 if (agp_find_caps(dev)) {
145 agp_alloc_gatt(device_t dev)
147 u_int32_t apsize = AGP_GET_APERTURE(dev);
148 u_int32_t entries = apsize >> AGP_PAGE_SHIFT;
149 struct agp_gatt *gatt;
153 "allocating GATT for aperture of size %dM\n",
154 apsize / (1024*1024));
157 device_printf(dev, "bad aperture size\n");
161 gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT);
165 gatt->ag_entries = entries;
166 gatt->ag_virtual = contigmalloc(entries * sizeof(u_int32_t), M_AGP, 0,
167 0, ~0, PAGE_SIZE, 0);
168 if (!gatt->ag_virtual) {
170 device_printf(dev, "contiguous allocation failed\n");
174 bzero(gatt->ag_virtual, entries * sizeof(u_int32_t));
175 gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual);
182 agp_free_gatt(struct agp_gatt *gatt)
184 contigfree(gatt->ag_virtual,
185 gatt->ag_entries * sizeof(u_int32_t), M_AGP);
189 static int agp_max[][2] = {
200 #define agp_max_size (sizeof(agp_max) / sizeof(agp_max[0]))
203 agp_generic_attach(device_t dev)
205 struct agp_softc *sc = device_get_softc(dev);
209 * Find and map the aperture.
212 sc->as_aperture = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 0);
213 if (!sc->as_aperture)
217 * Work out an upper bound for agp memory allocation. This
218 * uses a heurisitc table from the Linux driver.
220 memsize = ptoa(Maxmem) >> 20;
221 for (i = 0; i < agp_max_size; i++) {
222 if (memsize <= agp_max[i][0])
225 if (i == agp_max_size) i = agp_max_size - 1;
226 sc->as_maxmem = agp_max[i][1] << 20U;
229 * The lock is used to prevent re-entry to
230 * agp_generic_bind_memory() since that function can sleep.
232 mtx_init(&sc->as_lock, "agp lock", NULL, MTX_DEF);
235 * Initialise stuff for the userland device.
237 agp_devclass = devclass_find("agp");
238 TAILQ_INIT(&sc->as_memory);
241 sc->as_devnode = make_dev(&agp_cdevsw,
242 device_get_unit(dev),
252 agp_generic_detach(device_t dev)
254 struct agp_softc *sc = device_get_softc(dev);
256 destroy_dev(sc->as_devnode);
257 bus_release_resource(dev, SYS_RES_MEMORY, AGP_APBASE, sc->as_aperture);
258 mtx_destroy(&sc->as_lock);
264 * This does the enable logic for v3, with the same topology
265 * restrictions as in place for v2 -- one bus, one device on the bus.
268 agp_v3_enable(device_t dev, device_t mdev, u_int32_t mode)
270 u_int32_t tstatus, mstatus;
272 int rq, sba, fw, rate, arqsz, cal;
274 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
275 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
277 /* Set RQ to the min of mode, tstatus and mstatus */
278 rq = AGP_MODE_GET_RQ(mode);
279 if (AGP_MODE_GET_RQ(tstatus) < rq)
280 rq = AGP_MODE_GET_RQ(tstatus);
281 if (AGP_MODE_GET_RQ(mstatus) < rq)
282 rq = AGP_MODE_GET_RQ(mstatus);
285 * ARQSZ - Set the value to the maximum one.
286 * Don't allow the mode register to override values.
288 arqsz = AGP_MODE_GET_ARQSZ(mode);
289 if (AGP_MODE_GET_ARQSZ(tstatus) > rq)
290 rq = AGP_MODE_GET_ARQSZ(tstatus);
291 if (AGP_MODE_GET_ARQSZ(mstatus) > rq)
292 rq = AGP_MODE_GET_ARQSZ(mstatus);
294 /* Calibration cycle - don't allow override by mode register */
295 cal = AGP_MODE_GET_CAL(tstatus);
296 if (AGP_MODE_GET_CAL(mstatus) < cal)
297 cal = AGP_MODE_GET_CAL(mstatus);
299 /* SBA must be supported for AGP v3. */
302 /* Set FW if all three support it. */
303 fw = (AGP_MODE_GET_FW(tstatus)
304 & AGP_MODE_GET_FW(mstatus)
305 & AGP_MODE_GET_FW(mode));
307 /* Figure out the max rate */
308 rate = (AGP_MODE_GET_RATE(tstatus)
309 & AGP_MODE_GET_RATE(mstatus)
310 & AGP_MODE_GET_RATE(mode));
311 if (rate & AGP_MODE_V3_RATE_8x)
312 rate = AGP_MODE_V3_RATE_8x;
314 rate = AGP_MODE_V3_RATE_4x;
316 device_printf(dev, "Setting AGP v3 mode %d\n", rate * 4);
318 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, 0, 4);
320 /* Construct the new mode word and tell the hardware */
321 command = AGP_MODE_SET_RQ(0, rq);
322 command = AGP_MODE_SET_ARQSZ(command, arqsz);
323 command = AGP_MODE_SET_CAL(command, cal);
324 command = AGP_MODE_SET_SBA(command, sba);
325 command = AGP_MODE_SET_FW(command, fw);
326 command = AGP_MODE_SET_RATE(command, rate);
327 command = AGP_MODE_SET_AGP(command, 1);
328 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, command, 4);
329 pci_write_config(mdev, agp_find_caps(mdev) + AGP_COMMAND, command, 4);
335 agp_v2_enable(device_t dev, device_t mdev, u_int32_t mode)
337 u_int32_t tstatus, mstatus;
339 int rq, sba, fw, rate;
341 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
342 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
344 /* Set RQ to the min of mode, tstatus and mstatus */
345 rq = AGP_MODE_GET_RQ(mode);
346 if (AGP_MODE_GET_RQ(tstatus) < rq)
347 rq = AGP_MODE_GET_RQ(tstatus);
348 if (AGP_MODE_GET_RQ(mstatus) < rq)
349 rq = AGP_MODE_GET_RQ(mstatus);
351 /* Set SBA if all three can deal with SBA */
352 sba = (AGP_MODE_GET_SBA(tstatus)
353 & AGP_MODE_GET_SBA(mstatus)
354 & AGP_MODE_GET_SBA(mode));
357 fw = (AGP_MODE_GET_FW(tstatus)
358 & AGP_MODE_GET_FW(mstatus)
359 & AGP_MODE_GET_FW(mode));
361 /* Figure out the max rate */
362 rate = (AGP_MODE_GET_RATE(tstatus)
363 & AGP_MODE_GET_RATE(mstatus)
364 & AGP_MODE_GET_RATE(mode));
365 if (rate & AGP_MODE_V2_RATE_4x)
366 rate = AGP_MODE_V2_RATE_4x;
367 else if (rate & AGP_MODE_V2_RATE_2x)
368 rate = AGP_MODE_V2_RATE_2x;
370 rate = AGP_MODE_V2_RATE_1x;
372 device_printf(dev, "Setting AGP v2 mode %d\n", rate);
374 /* Construct the new mode word and tell the hardware */
375 command = AGP_MODE_SET_RQ(0, rq);
376 command = AGP_MODE_SET_SBA(command, sba);
377 command = AGP_MODE_SET_FW(command, fw);
378 command = AGP_MODE_SET_RATE(command, rate);
379 command = AGP_MODE_SET_AGP(command, 1);
380 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, command, 4);
381 pci_write_config(mdev, agp_find_caps(mdev) + AGP_COMMAND, command, 4);
387 agp_generic_enable(device_t dev, u_int32_t mode)
389 device_t mdev = agp_find_display();
390 u_int32_t tstatus, mstatus;
393 AGP_DPF("can't find display\n");
397 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
398 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
401 * Check display and bridge for AGP v3 support. AGP v3 allows
402 * more variety in topology than v2, e.g. multiple AGP devices
403 * attached to one bridge, or multiple AGP bridges in one
404 * system. This doesn't attempt to address those situations,
405 * but should work fine for a classic single AGP slot system
408 if (AGP_MODE_GET_MODE_3(tstatus) && AGP_MODE_GET_MODE_3(mstatus))
409 return (agp_v3_enable(dev, mdev, mode));
411 return (agp_v2_enable(dev, mdev, mode));
415 agp_generic_alloc_memory(device_t dev, int type, vm_size_t size)
417 struct agp_softc *sc = device_get_softc(dev);
418 struct agp_memory *mem;
420 if ((size & (AGP_PAGE_SIZE - 1)) != 0)
423 if (sc->as_allocated + size > sc->as_maxmem)
427 printf("agp_generic_alloc_memory: unsupported type %d\n",
432 mem = malloc(sizeof *mem, M_AGP, M_WAITOK);
433 mem->am_id = sc->as_nextid++;
436 mem->am_obj = vm_object_allocate(OBJT_DEFAULT, atop(round_page(size)));
437 mem->am_physical = 0;
439 mem->am_is_bound = 0;
440 TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link);
441 sc->as_allocated += size;
447 agp_generic_free_memory(device_t dev, struct agp_memory *mem)
449 struct agp_softc *sc = device_get_softc(dev);
451 if (mem->am_is_bound)
454 sc->as_allocated -= mem->am_size;
455 TAILQ_REMOVE(&sc->as_memory, mem, am_link);
456 vm_object_deallocate(mem->am_obj);
462 agp_generic_bind_memory(device_t dev, struct agp_memory *mem,
465 struct agp_softc *sc = device_get_softc(dev);
470 /* Do some sanity checks first. */
471 if (offset < 0 || (offset & (AGP_PAGE_SIZE - 1)) != 0 ||
472 offset + mem->am_size > AGP_GET_APERTURE(dev)) {
473 device_printf(dev, "binding memory at bad offset %#x\n",
479 * Allocate the pages early, before acquiring the lock,
480 * because vm_page_grab() used with VM_ALLOC_RETRY may
481 * block and we can't hold a mutex while blocking.
483 VM_OBJECT_LOCK(mem->am_obj);
484 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
486 * Find a page from the object and wire it
487 * down. This page will be mapped using one or more
488 * entries in the GATT (assuming that PAGE_SIZE >=
489 * AGP_PAGE_SIZE. If this is the first call to bind,
490 * the pages will be allocated and zeroed.
492 m = vm_page_grab(mem->am_obj, OFF_TO_IDX(i),
493 VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
494 AGP_DPF("found page pa=%#x\n", VM_PAGE_TO_PHYS(m));
496 VM_OBJECT_UNLOCK(mem->am_obj);
498 mtx_lock(&sc->as_lock);
500 if (mem->am_is_bound) {
501 device_printf(dev, "memory already bound\n");
503 VM_OBJECT_LOCK(mem->am_obj);
508 * Bind the individual pages and flush the chipset's
511 * XXX Presumably, this needs to be the pci address on alpha
512 * (i.e. use alpha_XXX_dmamap()). I don't have access to any
513 * alpha AGP hardware to check.
515 VM_OBJECT_LOCK(mem->am_obj);
516 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
517 m = vm_page_lookup(mem->am_obj, OFF_TO_IDX(i));
520 * Install entries in the GATT, making sure that if
521 * AGP_PAGE_SIZE < PAGE_SIZE and mem->am_size is not
522 * aligned to PAGE_SIZE, we don't modify too many GATT
525 for (j = 0; j < PAGE_SIZE && i + j < mem->am_size;
526 j += AGP_PAGE_SIZE) {
527 vm_offset_t pa = VM_PAGE_TO_PHYS(m) + j;
528 AGP_DPF("binding offset %#x to pa %#x\n",
530 error = AGP_BIND_PAGE(dev, offset + i + j, pa);
533 * Bail out. Reverse all the mappings
534 * and unwire the pages.
536 vm_page_lock_queues();
538 vm_page_unlock_queues();
539 for (k = 0; k < i + j; k += AGP_PAGE_SIZE)
540 AGP_UNBIND_PAGE(dev, offset + k);
544 vm_page_lock_queues();
546 vm_page_unlock_queues();
548 VM_OBJECT_UNLOCK(mem->am_obj);
551 * Flush the cpu cache since we are providing a new mapping
557 * Make sure the chipset gets the new mappings.
561 mem->am_offset = offset;
562 mem->am_is_bound = 1;
564 mtx_unlock(&sc->as_lock);
568 mtx_unlock(&sc->as_lock);
569 VM_OBJECT_LOCK_ASSERT(mem->am_obj, MA_OWNED);
570 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
571 m = vm_page_lookup(mem->am_obj, OFF_TO_IDX(i));
572 vm_page_lock_queues();
573 vm_page_unwire(m, 0);
574 vm_page_unlock_queues();
576 VM_OBJECT_UNLOCK(mem->am_obj);
582 agp_generic_unbind_memory(device_t dev, struct agp_memory *mem)
584 struct agp_softc *sc = device_get_softc(dev);
588 mtx_lock(&sc->as_lock);
590 if (!mem->am_is_bound) {
591 device_printf(dev, "memory is not bound\n");
592 mtx_unlock(&sc->as_lock);
598 * Unbind the individual pages and flush the chipset's
599 * TLB. Unwire the pages so they can be swapped.
601 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE)
602 AGP_UNBIND_PAGE(dev, mem->am_offset + i);
603 VM_OBJECT_LOCK(mem->am_obj);
604 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
605 m = vm_page_lookup(mem->am_obj, atop(i));
606 vm_page_lock_queues();
607 vm_page_unwire(m, 0);
608 vm_page_unlock_queues();
610 VM_OBJECT_UNLOCK(mem->am_obj);
616 mem->am_is_bound = 0;
618 mtx_unlock(&sc->as_lock);
623 /* Helper functions for implementing user/kernel api */
626 agp_acquire_helper(device_t dev, enum agp_acquire_state state)
628 struct agp_softc *sc = device_get_softc(dev);
630 if (sc->as_state != AGP_ACQUIRE_FREE)
632 sc->as_state = state;
638 agp_release_helper(device_t dev, enum agp_acquire_state state)
640 struct agp_softc *sc = device_get_softc(dev);
642 if (sc->as_state == AGP_ACQUIRE_FREE)
645 if (sc->as_state != state)
648 sc->as_state = AGP_ACQUIRE_FREE;
652 static struct agp_memory *
653 agp_find_memory(device_t dev, int id)
655 struct agp_softc *sc = device_get_softc(dev);
656 struct agp_memory *mem;
658 AGP_DPF("searching for memory block %d\n", id);
659 TAILQ_FOREACH(mem, &sc->as_memory, am_link) {
660 AGP_DPF("considering memory block %d\n", mem->am_id);
661 if (mem->am_id == id)
667 /* Implementation of the userland ioctl api */
670 agp_info_user(device_t dev, agp_info *info)
672 struct agp_softc *sc = device_get_softc(dev);
674 bzero(info, sizeof *info);
675 info->bridge_id = pci_get_devid(dev);
677 pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
678 info->aper_base = rman_get_start(sc->as_aperture);
679 info->aper_size = AGP_GET_APERTURE(dev) >> 20;
680 info->pg_total = info->pg_system = sc->as_maxmem >> AGP_PAGE_SHIFT;
681 info->pg_used = sc->as_allocated >> AGP_PAGE_SHIFT;
687 agp_setup_user(device_t dev, agp_setup *setup)
689 return AGP_ENABLE(dev, setup->agp_mode);
693 agp_allocate_user(device_t dev, agp_allocate *alloc)
695 struct agp_memory *mem;
697 mem = AGP_ALLOC_MEMORY(dev,
699 alloc->pg_count << AGP_PAGE_SHIFT);
701 alloc->key = mem->am_id;
702 alloc->physical = mem->am_physical;
710 agp_deallocate_user(device_t dev, int id)
712 struct agp_memory *mem = agp_find_memory(dev, id);;
715 AGP_FREE_MEMORY(dev, mem);
723 agp_bind_user(device_t dev, agp_bind *bind)
725 struct agp_memory *mem = agp_find_memory(dev, bind->key);
730 return AGP_BIND_MEMORY(dev, mem, bind->pg_start << AGP_PAGE_SHIFT);
734 agp_unbind_user(device_t dev, agp_unbind *unbind)
736 struct agp_memory *mem = agp_find_memory(dev, unbind->key);
741 return AGP_UNBIND_MEMORY(dev, mem);
745 agp_open(struct cdev *kdev, int oflags, int devtype, struct thread *td)
747 device_t dev = KDEV2DEV(kdev);
748 struct agp_softc *sc = device_get_softc(dev);
750 if (!sc->as_isopen) {
759 agp_close(struct cdev *kdev, int fflag, int devtype, struct thread *td)
761 device_t dev = KDEV2DEV(kdev);
762 struct agp_softc *sc = device_get_softc(dev);
763 struct agp_memory *mem;
766 * Clear the GATT and force release on last close
768 while ((mem = TAILQ_FIRST(&sc->as_memory)) != 0) {
769 if (mem->am_is_bound)
770 AGP_UNBIND_MEMORY(dev, mem);
771 AGP_FREE_MEMORY(dev, mem);
773 if (sc->as_state == AGP_ACQUIRE_USER)
774 agp_release_helper(dev, AGP_ACQUIRE_USER);
782 agp_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int fflag, struct thread *td)
784 device_t dev = KDEV2DEV(kdev);
788 return agp_info_user(dev, (agp_info *) data);
791 return agp_acquire_helper(dev, AGP_ACQUIRE_USER);
794 return agp_release_helper(dev, AGP_ACQUIRE_USER);
797 return agp_setup_user(dev, (agp_setup *)data);
799 case AGPIOC_ALLOCATE:
800 return agp_allocate_user(dev, (agp_allocate *)data);
802 case AGPIOC_DEALLOCATE:
803 return agp_deallocate_user(dev, *(int *) data);
806 return agp_bind_user(dev, (agp_bind *)data);
809 return agp_unbind_user(dev, (agp_unbind *)data);
817 agp_mmap(struct cdev *kdev, vm_offset_t offset, vm_paddr_t *paddr, int prot)
819 device_t dev = KDEV2DEV(kdev);
820 struct agp_softc *sc = device_get_softc(dev);
822 if (offset > AGP_GET_APERTURE(dev))
824 *paddr = rman_get_start(sc->as_aperture) + offset;
828 /* Implementation of the kernel api */
833 device_t *children, child;
838 if (devclass_get_devices(agp_devclass, &children, &count) != 0)
841 for (i = 0; i < count; i++) {
842 if (device_is_attached(children[i])) {
847 free(children, M_TEMP);
851 enum agp_acquire_state
852 agp_state(device_t dev)
854 struct agp_softc *sc = device_get_softc(dev);
859 agp_get_info(device_t dev, struct agp_info *info)
861 struct agp_softc *sc = device_get_softc(dev);
864 pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
865 info->ai_aperture_base = rman_get_start(sc->as_aperture);
866 info->ai_aperture_size = rman_get_size(sc->as_aperture);
867 info->ai_memory_allowed = sc->as_maxmem;
868 info->ai_memory_used = sc->as_allocated;
872 agp_acquire(device_t dev)
874 return agp_acquire_helper(dev, AGP_ACQUIRE_KERNEL);
878 agp_release(device_t dev)
880 return agp_release_helper(dev, AGP_ACQUIRE_KERNEL);
884 agp_enable(device_t dev, u_int32_t mode)
886 return AGP_ENABLE(dev, mode);
889 void *agp_alloc_memory(device_t dev, int type, vm_size_t bytes)
891 return (void *) AGP_ALLOC_MEMORY(dev, type, bytes);
894 void agp_free_memory(device_t dev, void *handle)
896 struct agp_memory *mem = (struct agp_memory *) handle;
897 AGP_FREE_MEMORY(dev, mem);
900 int agp_bind_memory(device_t dev, void *handle, vm_offset_t offset)
902 struct agp_memory *mem = (struct agp_memory *) handle;
903 return AGP_BIND_MEMORY(dev, mem, offset);
906 int agp_unbind_memory(device_t dev, void *handle)
908 struct agp_memory *mem = (struct agp_memory *) handle;
909 return AGP_UNBIND_MEMORY(dev, mem);
912 void agp_memory_info(device_t dev, void *handle, struct
915 struct agp_memory *mem = (struct agp_memory *) handle;
917 mi->ami_size = mem->am_size;
918 mi->ami_physical = mem->am_physical;
919 mi->ami_offset = mem->am_offset;
920 mi->ami_is_bound = mem->am_is_bound;