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,
214 if (!sc->as_aperture)
218 * Work out an upper bound for agp memory allocation. This
219 * uses a heurisitc table from the Linux driver.
221 memsize = ptoa(Maxmem) >> 20;
222 for (i = 0; i < agp_max_size; i++) {
223 if (memsize <= agp_max[i][0])
226 if (i == agp_max_size) i = agp_max_size - 1;
227 sc->as_maxmem = agp_max[i][1] << 20U;
230 * The lock is used to prevent re-entry to
231 * agp_generic_bind_memory() since that function can sleep.
233 mtx_init(&sc->as_lock, "agp lock", NULL, MTX_DEF);
236 * Initialise stuff for the userland device.
238 agp_devclass = devclass_find("agp");
239 TAILQ_INIT(&sc->as_memory);
242 sc->as_devnode = make_dev(&agp_cdevsw,
243 device_get_unit(dev),
253 agp_free_cdev(device_t dev)
255 struct agp_softc *sc = device_get_softc(dev);
257 destroy_dev(sc->as_devnode);
261 agp_free_res(device_t dev)
263 struct agp_softc *sc = device_get_softc(dev);
265 bus_release_resource(dev, SYS_RES_MEMORY, AGP_APBASE, sc->as_aperture);
266 mtx_destroy(&sc->as_lock);
271 agp_generic_detach(device_t dev)
280 * This does the enable logic for v3, with the same topology
281 * restrictions as in place for v2 -- one bus, one device on the bus.
284 agp_v3_enable(device_t dev, device_t mdev, u_int32_t mode)
286 u_int32_t tstatus, mstatus;
288 int rq, sba, fw, rate, arqsz, cal;
290 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
291 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
293 /* Set RQ to the min of mode, tstatus and mstatus */
294 rq = AGP_MODE_GET_RQ(mode);
295 if (AGP_MODE_GET_RQ(tstatus) < rq)
296 rq = AGP_MODE_GET_RQ(tstatus);
297 if (AGP_MODE_GET_RQ(mstatus) < rq)
298 rq = AGP_MODE_GET_RQ(mstatus);
301 * ARQSZ - Set the value to the maximum one.
302 * Don't allow the mode register to override values.
304 arqsz = AGP_MODE_GET_ARQSZ(mode);
305 if (AGP_MODE_GET_ARQSZ(tstatus) > rq)
306 rq = AGP_MODE_GET_ARQSZ(tstatus);
307 if (AGP_MODE_GET_ARQSZ(mstatus) > rq)
308 rq = AGP_MODE_GET_ARQSZ(mstatus);
310 /* Calibration cycle - don't allow override by mode register */
311 cal = AGP_MODE_GET_CAL(tstatus);
312 if (AGP_MODE_GET_CAL(mstatus) < cal)
313 cal = AGP_MODE_GET_CAL(mstatus);
315 /* SBA must be supported for AGP v3. */
318 /* Set FW if all three support it. */
319 fw = (AGP_MODE_GET_FW(tstatus)
320 & AGP_MODE_GET_FW(mstatus)
321 & AGP_MODE_GET_FW(mode));
323 /* Figure out the max rate */
324 rate = (AGP_MODE_GET_RATE(tstatus)
325 & AGP_MODE_GET_RATE(mstatus)
326 & AGP_MODE_GET_RATE(mode));
327 if (rate & AGP_MODE_V3_RATE_8x)
328 rate = AGP_MODE_V3_RATE_8x;
330 rate = AGP_MODE_V3_RATE_4x;
332 device_printf(dev, "Setting AGP v3 mode %d\n", rate * 4);
334 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, 0, 4);
336 /* Construct the new mode word and tell the hardware */
337 command = AGP_MODE_SET_RQ(0, rq);
338 command = AGP_MODE_SET_ARQSZ(command, arqsz);
339 command = AGP_MODE_SET_CAL(command, cal);
340 command = AGP_MODE_SET_SBA(command, sba);
341 command = AGP_MODE_SET_FW(command, fw);
342 command = AGP_MODE_SET_RATE(command, rate);
343 command = AGP_MODE_SET_AGP(command, 1);
344 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, command, 4);
345 pci_write_config(mdev, agp_find_caps(mdev) + AGP_COMMAND, command, 4);
351 agp_v2_enable(device_t dev, device_t mdev, u_int32_t mode)
353 u_int32_t tstatus, mstatus;
355 int rq, sba, fw, rate;
357 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
358 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
360 /* Set RQ to the min of mode, tstatus and mstatus */
361 rq = AGP_MODE_GET_RQ(mode);
362 if (AGP_MODE_GET_RQ(tstatus) < rq)
363 rq = AGP_MODE_GET_RQ(tstatus);
364 if (AGP_MODE_GET_RQ(mstatus) < rq)
365 rq = AGP_MODE_GET_RQ(mstatus);
367 /* Set SBA if all three can deal with SBA */
368 sba = (AGP_MODE_GET_SBA(tstatus)
369 & AGP_MODE_GET_SBA(mstatus)
370 & AGP_MODE_GET_SBA(mode));
373 fw = (AGP_MODE_GET_FW(tstatus)
374 & AGP_MODE_GET_FW(mstatus)
375 & AGP_MODE_GET_FW(mode));
377 /* Figure out the max rate */
378 rate = (AGP_MODE_GET_RATE(tstatus)
379 & AGP_MODE_GET_RATE(mstatus)
380 & AGP_MODE_GET_RATE(mode));
381 if (rate & AGP_MODE_V2_RATE_4x)
382 rate = AGP_MODE_V2_RATE_4x;
383 else if (rate & AGP_MODE_V2_RATE_2x)
384 rate = AGP_MODE_V2_RATE_2x;
386 rate = AGP_MODE_V2_RATE_1x;
388 device_printf(dev, "Setting AGP v2 mode %d\n", rate);
390 /* Construct the new mode word and tell the hardware */
391 command = AGP_MODE_SET_RQ(0, rq);
392 command = AGP_MODE_SET_SBA(command, sba);
393 command = AGP_MODE_SET_FW(command, fw);
394 command = AGP_MODE_SET_RATE(command, rate);
395 command = AGP_MODE_SET_AGP(command, 1);
396 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, command, 4);
397 pci_write_config(mdev, agp_find_caps(mdev) + AGP_COMMAND, command, 4);
403 agp_generic_enable(device_t dev, u_int32_t mode)
405 device_t mdev = agp_find_display();
406 u_int32_t tstatus, mstatus;
409 AGP_DPF("can't find display\n");
413 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
414 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
417 * Check display and bridge for AGP v3 support. AGP v3 allows
418 * more variety in topology than v2, e.g. multiple AGP devices
419 * attached to one bridge, or multiple AGP bridges in one
420 * system. This doesn't attempt to address those situations,
421 * but should work fine for a classic single AGP slot system
424 if (AGP_MODE_GET_MODE_3(tstatus) && AGP_MODE_GET_MODE_3(mstatus))
425 return (agp_v3_enable(dev, mdev, mode));
427 return (agp_v2_enable(dev, mdev, mode));
431 agp_generic_alloc_memory(device_t dev, int type, vm_size_t size)
433 struct agp_softc *sc = device_get_softc(dev);
434 struct agp_memory *mem;
436 if ((size & (AGP_PAGE_SIZE - 1)) != 0)
439 if (sc->as_allocated + size > sc->as_maxmem)
443 printf("agp_generic_alloc_memory: unsupported type %d\n",
448 mem = malloc(sizeof *mem, M_AGP, M_WAITOK);
449 mem->am_id = sc->as_nextid++;
452 mem->am_obj = vm_object_allocate(OBJT_DEFAULT, atop(round_page(size)));
453 mem->am_physical = 0;
455 mem->am_is_bound = 0;
456 TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link);
457 sc->as_allocated += size;
463 agp_generic_free_memory(device_t dev, struct agp_memory *mem)
465 struct agp_softc *sc = device_get_softc(dev);
467 if (mem->am_is_bound)
470 sc->as_allocated -= mem->am_size;
471 TAILQ_REMOVE(&sc->as_memory, mem, am_link);
472 vm_object_deallocate(mem->am_obj);
478 agp_generic_bind_memory(device_t dev, struct agp_memory *mem,
481 struct agp_softc *sc = device_get_softc(dev);
486 /* Do some sanity checks first. */
487 if (offset < 0 || (offset & (AGP_PAGE_SIZE - 1)) != 0 ||
488 offset + mem->am_size > AGP_GET_APERTURE(dev)) {
489 device_printf(dev, "binding memory at bad offset %#x\n",
495 * Allocate the pages early, before acquiring the lock,
496 * because vm_page_grab() used with VM_ALLOC_RETRY may
497 * block and we can't hold a mutex while blocking.
499 VM_OBJECT_LOCK(mem->am_obj);
500 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
502 * Find a page from the object and wire it
503 * down. This page will be mapped using one or more
504 * entries in the GATT (assuming that PAGE_SIZE >=
505 * AGP_PAGE_SIZE. If this is the first call to bind,
506 * the pages will be allocated and zeroed.
508 m = vm_page_grab(mem->am_obj, OFF_TO_IDX(i),
509 VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
510 AGP_DPF("found page pa=%#x\n", VM_PAGE_TO_PHYS(m));
512 VM_OBJECT_UNLOCK(mem->am_obj);
514 mtx_lock(&sc->as_lock);
516 if (mem->am_is_bound) {
517 device_printf(dev, "memory already bound\n");
519 VM_OBJECT_LOCK(mem->am_obj);
524 * Bind the individual pages and flush the chipset's
527 * XXX Presumably, this needs to be the pci address on alpha
528 * (i.e. use alpha_XXX_dmamap()). I don't have access to any
529 * alpha AGP hardware to check.
531 VM_OBJECT_LOCK(mem->am_obj);
532 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
533 m = vm_page_lookup(mem->am_obj, OFF_TO_IDX(i));
536 * Install entries in the GATT, making sure that if
537 * AGP_PAGE_SIZE < PAGE_SIZE and mem->am_size is not
538 * aligned to PAGE_SIZE, we don't modify too many GATT
541 for (j = 0; j < PAGE_SIZE && i + j < mem->am_size;
542 j += AGP_PAGE_SIZE) {
543 vm_offset_t pa = VM_PAGE_TO_PHYS(m) + j;
544 AGP_DPF("binding offset %#x to pa %#x\n",
546 error = AGP_BIND_PAGE(dev, offset + i + j, pa);
549 * Bail out. Reverse all the mappings
550 * and unwire the pages.
552 vm_page_lock_queues();
554 vm_page_unlock_queues();
555 for (k = 0; k < i + j; k += AGP_PAGE_SIZE)
556 AGP_UNBIND_PAGE(dev, offset + k);
560 vm_page_lock_queues();
562 vm_page_unlock_queues();
564 VM_OBJECT_UNLOCK(mem->am_obj);
567 * Flush the cpu cache since we are providing a new mapping
573 * Make sure the chipset gets the new mappings.
577 mem->am_offset = offset;
578 mem->am_is_bound = 1;
580 mtx_unlock(&sc->as_lock);
584 mtx_unlock(&sc->as_lock);
585 VM_OBJECT_LOCK_ASSERT(mem->am_obj, MA_OWNED);
586 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
587 m = vm_page_lookup(mem->am_obj, OFF_TO_IDX(i));
588 vm_page_lock_queues();
589 vm_page_unwire(m, 0);
590 vm_page_unlock_queues();
592 VM_OBJECT_UNLOCK(mem->am_obj);
598 agp_generic_unbind_memory(device_t dev, struct agp_memory *mem)
600 struct agp_softc *sc = device_get_softc(dev);
604 mtx_lock(&sc->as_lock);
606 if (!mem->am_is_bound) {
607 device_printf(dev, "memory is not bound\n");
608 mtx_unlock(&sc->as_lock);
614 * Unbind the individual pages and flush the chipset's
615 * TLB. Unwire the pages so they can be swapped.
617 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE)
618 AGP_UNBIND_PAGE(dev, mem->am_offset + i);
619 VM_OBJECT_LOCK(mem->am_obj);
620 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
621 m = vm_page_lookup(mem->am_obj, atop(i));
622 vm_page_lock_queues();
623 vm_page_unwire(m, 0);
624 vm_page_unlock_queues();
626 VM_OBJECT_UNLOCK(mem->am_obj);
632 mem->am_is_bound = 0;
634 mtx_unlock(&sc->as_lock);
639 /* Helper functions for implementing user/kernel api */
642 agp_acquire_helper(device_t dev, enum agp_acquire_state state)
644 struct agp_softc *sc = device_get_softc(dev);
646 if (sc->as_state != AGP_ACQUIRE_FREE)
648 sc->as_state = state;
654 agp_release_helper(device_t dev, enum agp_acquire_state state)
656 struct agp_softc *sc = device_get_softc(dev);
658 if (sc->as_state == AGP_ACQUIRE_FREE)
661 if (sc->as_state != state)
664 sc->as_state = AGP_ACQUIRE_FREE;
668 static struct agp_memory *
669 agp_find_memory(device_t dev, int id)
671 struct agp_softc *sc = device_get_softc(dev);
672 struct agp_memory *mem;
674 AGP_DPF("searching for memory block %d\n", id);
675 TAILQ_FOREACH(mem, &sc->as_memory, am_link) {
676 AGP_DPF("considering memory block %d\n", mem->am_id);
677 if (mem->am_id == id)
683 /* Implementation of the userland ioctl api */
686 agp_info_user(device_t dev, agp_info *info)
688 struct agp_softc *sc = device_get_softc(dev);
690 bzero(info, sizeof *info);
691 info->bridge_id = pci_get_devid(dev);
693 pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
694 info->aper_base = rman_get_start(sc->as_aperture);
695 info->aper_size = AGP_GET_APERTURE(dev) >> 20;
696 info->pg_total = info->pg_system = sc->as_maxmem >> AGP_PAGE_SHIFT;
697 info->pg_used = sc->as_allocated >> AGP_PAGE_SHIFT;
703 agp_setup_user(device_t dev, agp_setup *setup)
705 return AGP_ENABLE(dev, setup->agp_mode);
709 agp_allocate_user(device_t dev, agp_allocate *alloc)
711 struct agp_memory *mem;
713 mem = AGP_ALLOC_MEMORY(dev,
715 alloc->pg_count << AGP_PAGE_SHIFT);
717 alloc->key = mem->am_id;
718 alloc->physical = mem->am_physical;
726 agp_deallocate_user(device_t dev, int id)
728 struct agp_memory *mem = agp_find_memory(dev, id);;
731 AGP_FREE_MEMORY(dev, mem);
739 agp_bind_user(device_t dev, agp_bind *bind)
741 struct agp_memory *mem = agp_find_memory(dev, bind->key);
746 return AGP_BIND_MEMORY(dev, mem, bind->pg_start << AGP_PAGE_SHIFT);
750 agp_unbind_user(device_t dev, agp_unbind *unbind)
752 struct agp_memory *mem = agp_find_memory(dev, unbind->key);
757 return AGP_UNBIND_MEMORY(dev, mem);
761 agp_open(struct cdev *kdev, int oflags, int devtype, struct thread *td)
763 device_t dev = KDEV2DEV(kdev);
764 struct agp_softc *sc = device_get_softc(dev);
766 if (!sc->as_isopen) {
775 agp_close(struct cdev *kdev, int fflag, int devtype, struct thread *td)
777 device_t dev = KDEV2DEV(kdev);
778 struct agp_softc *sc = device_get_softc(dev);
779 struct agp_memory *mem;
782 * Clear the GATT and force release on last close
784 while ((mem = TAILQ_FIRST(&sc->as_memory)) != 0) {
785 if (mem->am_is_bound)
786 AGP_UNBIND_MEMORY(dev, mem);
787 AGP_FREE_MEMORY(dev, mem);
789 if (sc->as_state == AGP_ACQUIRE_USER)
790 agp_release_helper(dev, AGP_ACQUIRE_USER);
798 agp_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int fflag, struct thread *td)
800 device_t dev = KDEV2DEV(kdev);
804 return agp_info_user(dev, (agp_info *) data);
807 return agp_acquire_helper(dev, AGP_ACQUIRE_USER);
810 return agp_release_helper(dev, AGP_ACQUIRE_USER);
813 return agp_setup_user(dev, (agp_setup *)data);
815 case AGPIOC_ALLOCATE:
816 return agp_allocate_user(dev, (agp_allocate *)data);
818 case AGPIOC_DEALLOCATE:
819 return agp_deallocate_user(dev, *(int *) data);
822 return agp_bind_user(dev, (agp_bind *)data);
825 return agp_unbind_user(dev, (agp_unbind *)data);
833 agp_mmap(struct cdev *kdev, vm_offset_t offset, vm_paddr_t *paddr, int prot)
835 device_t dev = KDEV2DEV(kdev);
836 struct agp_softc *sc = device_get_softc(dev);
838 if (offset > AGP_GET_APERTURE(dev))
840 *paddr = rman_get_start(sc->as_aperture) + offset;
844 /* Implementation of the kernel api */
851 return devclass_get_device(agp_devclass, 0);
854 enum agp_acquire_state
855 agp_state(device_t dev)
857 struct agp_softc *sc = device_get_softc(dev);
862 agp_get_info(device_t dev, struct agp_info *info)
864 struct agp_softc *sc = device_get_softc(dev);
867 pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
868 info->ai_aperture_base = rman_get_start(sc->as_aperture);
869 info->ai_aperture_size = rman_get_size(sc->as_aperture);
870 info->ai_aperture_va = (vm_offset_t) rman_get_virtual(sc->as_aperture);
871 info->ai_memory_allowed = sc->as_maxmem;
872 info->ai_memory_used = sc->as_allocated;
876 agp_acquire(device_t dev)
878 return agp_acquire_helper(dev, AGP_ACQUIRE_KERNEL);
882 agp_release(device_t dev)
884 return agp_release_helper(dev, AGP_ACQUIRE_KERNEL);
888 agp_enable(device_t dev, u_int32_t mode)
890 return AGP_ENABLE(dev, mode);
893 void *agp_alloc_memory(device_t dev, int type, vm_size_t bytes)
895 return (void *) AGP_ALLOC_MEMORY(dev, type, bytes);
898 void agp_free_memory(device_t dev, void *handle)
900 struct agp_memory *mem = (struct agp_memory *) handle;
901 AGP_FREE_MEMORY(dev, mem);
904 int agp_bind_memory(device_t dev, void *handle, vm_offset_t offset)
906 struct agp_memory *mem = (struct agp_memory *) handle;
907 return AGP_BIND_MEMORY(dev, mem, offset);
910 int agp_unbind_memory(device_t dev, void *handle)
912 struct agp_memory *mem = (struct agp_memory *) handle;
913 return AGP_UNBIND_MEMORY(dev, mem);
916 void agp_memory_info(device_t dev, void *handle, struct
919 struct agp_memory *mem = (struct agp_memory *) handle;
921 mi->ami_size = mem->am_size;
922 mi->ami_physical = mem->am_physical;
923 mi->ami_offset = mem->am_offset;
924 mi->ami_is_bound = mem->am_is_bound;