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
26 * $FreeBSD: src/sys/pci/agp.c,v 1.3.2.4 2002/08/11 19:58:12 alc Exp $
27 * $DragonFly: src/sys/dev/agp/agp.c,v 1.26 2006/12/22 23:26:14 swildner Exp $
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/device.h>
37 #include <sys/malloc.h>
38 #include <sys/kernel.h>
40 #include <sys/ioccom.h>
41 #include <sys/agpio.h>
46 #include <bus/pci/pcivar.h>
47 #include <bus/pci/pcireg.h>
53 #include <vm/vm_object.h>
54 #include <vm/vm_page.h>
55 #include <vm/vm_pageout.h>
58 #include <machine/md_var.h>
60 MODULE_VERSION(agp, 1);
62 MALLOC_DEFINE(M_AGP, "agp", "AGP data structures");
64 #define CDEV_MAJOR 148
66 static d_open_t agp_open;
67 static d_close_t agp_close;
68 static d_ioctl_t agp_ioctl;
69 static d_mmap_t agp_mmap;
71 static struct dev_ops agp_ops = {
72 { "agp", CDEV_MAJOR, D_TTY },
79 static devclass_t agp_devclass;
80 #define KDEV2DEV(kdev) devclass_get_device(agp_devclass, minor(kdev))
82 /* Helper functions for implementing chipset mini drivers. */
93 agp_find_caps(device_t dev)
99 * Check the CAP_LIST bit of the PCI status register first.
101 status = pci_read_config(dev, PCIR_STATUS, 2);
102 if (!(status & 0x10))
106 * Traverse the capabilities list.
108 for (ptr = pci_read_config(dev, AGP_CAPPTR, 1);
111 u_int32_t capid = pci_read_config(dev, ptr, 4);
112 next = AGP_CAPID_GET_NEXT_PTR(capid);
115 * If this capability entry ID is 2, then we are done.
117 if (AGP_CAPID_GET_CAP_ID(capid) == 2)
125 * Find an AGP display device (if any).
128 agp_find_display(void)
130 devclass_t pci = devclass_find("pci");
131 device_t bus, dev = 0;
133 int busnum, numkids, i;
135 for (busnum = 0; busnum < devclass_get_maxunit(pci); busnum++) {
136 bus = devclass_get_device(pci, busnum);
139 device_get_children(bus, &kids, &numkids);
140 for (i = 0; i < numkids; i++) {
142 if (pci_get_class(dev) == PCIC_DISPLAY
143 && pci_get_subclass(dev) == PCIS_DISPLAY_VGA)
144 if (agp_find_caps(dev)) {
157 agp_alloc_gatt(device_t dev)
159 u_int32_t apsize = AGP_GET_APERTURE(dev);
160 u_int32_t entries = apsize >> AGP_PAGE_SHIFT;
161 struct agp_gatt *gatt;
165 "allocating GATT for aperture of size %dM\n",
166 apsize / (1024*1024));
169 device_printf(dev, "bad aperture size\n");
173 gatt = kmalloc(sizeof(struct agp_gatt), M_AGP, M_INTWAIT);
174 gatt->ag_entries = entries;
175 gatt->ag_virtual = contigmalloc(entries * sizeof(u_int32_t), M_AGP,
176 M_WAITOK, 0, ~0, PAGE_SIZE, 0);
177 if (!gatt->ag_virtual) {
179 device_printf(dev, "contiguous allocation failed\n");
183 bzero(gatt->ag_virtual, entries * sizeof(u_int32_t));
184 gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual);
191 agp_free_gatt(struct agp_gatt *gatt)
193 contigfree(gatt->ag_virtual,
194 gatt->ag_entries * sizeof(u_int32_t), M_AGP);
198 static int agp_max[][2] = {
209 #define agp_max_size (sizeof(agp_max) / sizeof(agp_max[0]))
212 agp_generic_attach(device_t dev)
214 struct agp_softc *sc = device_get_softc(dev);
218 * Find and map the aperture.
221 sc->as_aperture = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
222 0, ~0, 1, RF_ACTIVE);
223 if (!sc->as_aperture)
227 * Work out an upper bound for agp memory allocation. This
228 * uses a heurisitc table from the Linux driver.
230 memsize = ptoa(Maxmem) >> 20;
231 for (i = 0; i < agp_max_size; i++) {
232 if (memsize <= agp_max[i][0])
235 if (i == agp_max_size) i = agp_max_size - 1;
236 sc->as_maxmem = agp_max[i][1] << 20U;
239 * The lock is used to prevent re-entry to
240 * agp_generic_bind_memory() since that function can sleep.
242 lockinit(&sc->as_lock, "agplk", 0, 0);
245 * Initialise stuff for the userland device.
247 agp_devclass = devclass_find("agp");
248 TAILQ_INIT(&sc->as_memory);
251 dev_ops_add(&agp_ops, -1, device_get_unit(dev));
252 make_dev(&agp_ops, device_get_unit(dev), UID_ROOT, GID_WHEEL,
259 agp_generic_detach(device_t dev)
261 struct agp_softc *sc = device_get_softc(dev);
263 bus_release_resource(dev, SYS_RES_MEMORY, AGP_APBASE, sc->as_aperture);
265 dev_ops_remove(&agp_ops, -1, device_get_unit(dev));
270 * This does the enable logic for v3, with the same topology
271 * restrictions as in place for v2 -- one bus, one device on the bus.
274 agp_v3_enable(device_t dev, device_t mdev, u_int32_t mode)
276 u_int32_t tstatus, mstatus;
278 int rq, sba, fw, rate, arqsz, cal;
280 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
281 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
283 /* Set RQ to the min of mode, tstatus and mstatus */
284 rq = AGP_MODE_GET_RQ(mode);
285 if (AGP_MODE_GET_RQ(tstatus) < rq)
286 rq = AGP_MODE_GET_RQ(tstatus);
287 if (AGP_MODE_GET_RQ(mstatus) < rq)
288 rq = AGP_MODE_GET_RQ(mstatus);
291 * ARQSZ - Set the value to the maximum one.
292 * Don't allow the mode register to override values.
294 arqsz = AGP_MODE_GET_ARQSZ(mode);
295 if (AGP_MODE_GET_ARQSZ(tstatus) > rq)
296 rq = AGP_MODE_GET_ARQSZ(tstatus);
297 if (AGP_MODE_GET_ARQSZ(mstatus) > rq)
298 rq = AGP_MODE_GET_ARQSZ(mstatus);
300 /* Calibration cycle - don't allow override by mode register */
301 cal = AGP_MODE_GET_CAL(tstatus);
302 if (AGP_MODE_GET_CAL(mstatus) < cal)
303 cal = AGP_MODE_GET_CAL(mstatus);
305 /* SBA must be supported for AGP v3. */
308 /* Set FW if all three support it. */
309 fw = (AGP_MODE_GET_FW(tstatus)
310 & AGP_MODE_GET_FW(mstatus)
311 & AGP_MODE_GET_FW(mode));
313 /* Figure out the max rate */
314 rate = (AGP_MODE_GET_RATE(tstatus)
315 & AGP_MODE_GET_RATE(mstatus)
316 & AGP_MODE_GET_RATE(mode));
317 if (rate & AGP_MODE_V3_RATE_8x)
318 rate = AGP_MODE_V3_RATE_8x;
320 rate = AGP_MODE_V3_RATE_4x;
322 device_printf(dev, "Setting AGP v3 mode %d\n", rate * 4);
324 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, 0, 4);
326 /* Construct the new mode word and tell the hardware */
327 command = AGP_MODE_SET_RQ(0, rq);
328 command = AGP_MODE_SET_ARQSZ(command, arqsz);
329 command = AGP_MODE_SET_CAL(command, cal);
330 command = AGP_MODE_SET_SBA(command, sba);
331 command = AGP_MODE_SET_FW(command, fw);
332 command = AGP_MODE_SET_RATE(command, rate);
333 command = AGP_MODE_SET_AGP(command, 1);
334 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, command, 4);
335 pci_write_config(mdev, agp_find_caps(mdev) + AGP_COMMAND, command, 4);
341 agp_v2_enable(device_t dev, device_t mdev, u_int32_t mode)
343 u_int32_t tstatus, mstatus;
345 int rq, sba, fw, rate;
347 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
348 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
350 /* Set RQ to the min of mode, tstatus and mstatus */
351 rq = AGP_MODE_GET_RQ(mode);
352 if (AGP_MODE_GET_RQ(tstatus) < rq)
353 rq = AGP_MODE_GET_RQ(tstatus);
354 if (AGP_MODE_GET_RQ(mstatus) < rq)
355 rq = AGP_MODE_GET_RQ(mstatus);
357 /* Set SBA if all three can deal with SBA */
358 sba = (AGP_MODE_GET_SBA(tstatus)
359 & AGP_MODE_GET_SBA(mstatus)
360 & AGP_MODE_GET_SBA(mode));
363 fw = (AGP_MODE_GET_FW(tstatus)
364 & AGP_MODE_GET_FW(mstatus)
365 & AGP_MODE_GET_FW(mode));
367 /* Figure out the max rate */
368 rate = (AGP_MODE_GET_RATE(tstatus)
369 & AGP_MODE_GET_RATE(mstatus)
370 & AGP_MODE_GET_RATE(mode));
371 if (rate & AGP_MODE_V2_RATE_4x)
372 rate = AGP_MODE_V2_RATE_4x;
373 else if (rate & AGP_MODE_V2_RATE_2x)
374 rate = AGP_MODE_V2_RATE_2x;
376 rate = AGP_MODE_V2_RATE_1x;
378 device_printf(dev, "Setting AGP v2 mode %d\n", rate);
380 /* Construct the new mode word and tell the hardware */
381 command = AGP_MODE_SET_RQ(0, rq);
382 command = AGP_MODE_SET_SBA(command, sba);
383 command = AGP_MODE_SET_FW(command, fw);
384 command = AGP_MODE_SET_RATE(command, rate);
385 command = AGP_MODE_SET_AGP(command, 1);
386 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, command, 4);
387 pci_write_config(mdev, agp_find_caps(mdev) + AGP_COMMAND, command, 4);
393 agp_generic_enable(device_t dev, u_int32_t mode)
395 device_t mdev = agp_find_display();
396 u_int32_t tstatus, mstatus;
399 AGP_DPF("can't find display\n");
403 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
404 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
407 * Check display and bridge for AGP v3 support. AGP v3 allows
408 * more variety in topology than v2, e.g. multiple AGP devices
409 * attached to one bridge, or multiple AGP bridges in one
410 * system. This doesn't attempt to address those situations,
411 * but should work fine for a classic single AGP slot system
414 if (AGP_MODE_GET_MODE_3(tstatus) && AGP_MODE_GET_MODE_3(mstatus))
415 return (agp_v3_enable(dev, mdev, mode));
417 return (agp_v2_enable(dev, mdev, mode));
421 agp_generic_alloc_memory(device_t dev, int type, vm_size_t size)
423 struct agp_softc *sc = device_get_softc(dev);
424 struct agp_memory *mem;
426 if ((size & (AGP_PAGE_SIZE - 1)) != 0)
429 if (sc->as_allocated + size > sc->as_maxmem)
433 kprintf("agp_generic_alloc_memory: unsupported type %d\n",
438 mem = kmalloc(sizeof *mem, M_AGP, M_INTWAIT);
439 mem->am_id = sc->as_nextid++;
442 mem->am_obj = vm_object_allocate(OBJT_DEFAULT, atop(round_page(size)));
443 mem->am_physical = 0;
445 mem->am_is_bound = 0;
446 TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link);
447 sc->as_allocated += size;
453 agp_generic_free_memory(device_t dev, struct agp_memory *mem)
455 struct agp_softc *sc = device_get_softc(dev);
457 if (mem->am_is_bound)
460 sc->as_allocated -= mem->am_size;
461 TAILQ_REMOVE(&sc->as_memory, mem, am_link);
462 vm_object_deallocate(mem->am_obj);
468 agp_generic_bind_memory(device_t dev, struct agp_memory *mem,
471 struct agp_softc *sc = device_get_softc(dev);
476 lockmgr(&sc->as_lock, LK_EXCLUSIVE);
478 if (mem->am_is_bound) {
479 device_printf(dev, "memory already bound\n");
480 lockmgr(&sc->as_lock, LK_RELEASE);
485 || (offset & (AGP_PAGE_SIZE - 1)) != 0
486 || offset + mem->am_size > AGP_GET_APERTURE(dev)) {
487 device_printf(dev, "binding memory at bad offset %#x,%#x,%#x\n",
488 (int) offset, (int)mem->am_size,
489 (int)AGP_GET_APERTURE(dev));
490 kprintf("Check BIOS's aperature size vs X\n");
491 lockmgr(&sc->as_lock, LK_RELEASE);
496 * Bind the individual pages and flush the chipset's
499 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
501 * Find a page from the object and wire it
502 * down. This page will be mapped using one or more
503 * entries in the GATT (assuming that PAGE_SIZE >=
504 * AGP_PAGE_SIZE. If this is the first call to bind,
505 * the pages will be allocated and zeroed.
507 m = vm_page_grab(mem->am_obj, OFF_TO_IDX(i),
508 VM_ALLOC_NORMAL | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
509 if ((m->flags & PG_ZERO) == 0)
510 vm_page_zero_fill(m);
511 AGP_DPF("found page pa=%#x\n", VM_PAGE_TO_PHYS(m));
515 * Install entries in the GATT, making sure that if
516 * AGP_PAGE_SIZE < PAGE_SIZE and mem->am_size is not
517 * aligned to PAGE_SIZE, we don't modify too many GATT
520 for (j = 0; j < PAGE_SIZE && i + j < mem->am_size;
521 j += AGP_PAGE_SIZE) {
522 vm_offset_t pa = VM_PAGE_TO_PHYS(m) + j;
523 AGP_DPF("binding offset %#x to pa %#x\n",
525 error = AGP_BIND_PAGE(dev, offset + i + j, pa);
528 * Bail out. Reverse all the mappings
529 * and unwire the pages.
532 for (k = 0; k < i + j; k += AGP_PAGE_SIZE)
533 AGP_UNBIND_PAGE(dev, offset + k);
534 for (k = 0; k <= i; k += PAGE_SIZE) {
535 m = vm_page_lookup(mem->am_obj,
537 vm_page_unwire(m, 0);
539 lockmgr(&sc->as_lock, LK_RELEASE);
547 * Flush the cpu cache since we are providing a new mapping
553 * Make sure the chipset gets the new mappings.
557 mem->am_offset = offset;
558 mem->am_is_bound = 1;
560 lockmgr(&sc->as_lock, LK_RELEASE);
566 agp_generic_unbind_memory(device_t dev, struct agp_memory *mem)
568 struct agp_softc *sc = device_get_softc(dev);
572 lockmgr(&sc->as_lock, LK_EXCLUSIVE);
574 if (!mem->am_is_bound) {
575 device_printf(dev, "memory is not bound\n");
576 lockmgr(&sc->as_lock, LK_RELEASE);
582 * Unbind the individual pages and flush the chipset's
583 * TLB. Unwire the pages so they can be swapped.
585 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE)
586 AGP_UNBIND_PAGE(dev, mem->am_offset + i);
587 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
588 m = vm_page_lookup(mem->am_obj, atop(i));
589 vm_page_unwire(m, 0);
596 mem->am_is_bound = 0;
598 lockmgr(&sc->as_lock, LK_RELEASE);
603 /* Helper functions for implementing user/kernel api */
606 agp_acquire_helper(device_t dev, enum agp_acquire_state state)
608 struct agp_softc *sc = device_get_softc(dev);
610 if (sc->as_state != AGP_ACQUIRE_FREE)
612 sc->as_state = state;
618 agp_release_helper(device_t dev, enum agp_acquire_state state)
620 struct agp_softc *sc = device_get_softc(dev);
622 if (sc->as_state == AGP_ACQUIRE_FREE)
625 if (sc->as_state != state)
628 sc->as_state = AGP_ACQUIRE_FREE;
632 static struct agp_memory *
633 agp_find_memory(device_t dev, int id)
635 struct agp_softc *sc = device_get_softc(dev);
636 struct agp_memory *mem;
638 AGP_DPF("searching for memory block %d\n", id);
639 TAILQ_FOREACH(mem, &sc->as_memory, am_link) {
640 AGP_DPF("considering memory block %d\n", mem->am_id);
641 if (mem->am_id == id)
647 /* Implementation of the userland ioctl api */
650 agp_info_user(device_t dev, agp_info *info)
652 struct agp_softc *sc = device_get_softc(dev);
654 bzero(info, sizeof *info);
655 info->bridge_id = pci_get_devid(dev);
657 pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
658 info->aper_base = rman_get_start(sc->as_aperture);
659 info->aper_size = AGP_GET_APERTURE(dev) >> 20;
660 info->pg_total = info->pg_system = sc->as_maxmem >> AGP_PAGE_SHIFT;
661 info->pg_used = sc->as_allocated >> AGP_PAGE_SHIFT;
667 agp_setup_user(device_t dev, agp_setup *setup)
669 return AGP_ENABLE(dev, setup->agp_mode);
673 agp_allocate_user(device_t dev, agp_allocate *alloc)
675 struct agp_memory *mem;
677 mem = AGP_ALLOC_MEMORY(dev,
679 alloc->pg_count << AGP_PAGE_SHIFT);
681 alloc->key = mem->am_id;
682 alloc->physical = mem->am_physical;
690 agp_deallocate_user(device_t dev, int id)
692 struct agp_memory *mem = agp_find_memory(dev, id);
695 AGP_FREE_MEMORY(dev, mem);
703 agp_bind_user(device_t dev, agp_bind *bind)
705 struct agp_memory *mem = agp_find_memory(dev, bind->key);
710 return AGP_BIND_MEMORY(dev, mem, bind->pg_start << AGP_PAGE_SHIFT);
714 agp_unbind_user(device_t dev, agp_unbind *unbind)
716 struct agp_memory *mem = agp_find_memory(dev, unbind->key);
721 return AGP_UNBIND_MEMORY(dev, mem);
725 agp_open(struct dev_open_args *ap)
727 cdev_t kdev = ap->a_head.a_dev;
728 device_t dev = KDEV2DEV(kdev);
729 struct agp_softc *sc = device_get_softc(dev);
731 if (!sc->as_isopen) {
740 agp_close(struct dev_close_args *ap)
742 cdev_t kdev = ap->a_head.a_dev;
743 device_t dev = KDEV2DEV(kdev);
744 struct agp_softc *sc = device_get_softc(dev);
745 struct agp_memory *mem;
748 * Clear the GATT and force release on last close
750 while ((mem = TAILQ_FIRST(&sc->as_memory)) != 0) {
751 if (mem->am_is_bound)
752 AGP_UNBIND_MEMORY(dev, mem);
753 AGP_FREE_MEMORY(dev, mem);
755 if (sc->as_state == AGP_ACQUIRE_USER)
756 agp_release_helper(dev, AGP_ACQUIRE_USER);
764 agp_ioctl(struct dev_ioctl_args *ap)
766 cdev_t kdev = ap->a_head.a_dev;
767 device_t dev = KDEV2DEV(kdev);
771 return agp_info_user(dev, (agp_info *)ap->a_data);
774 return agp_acquire_helper(dev, AGP_ACQUIRE_USER);
777 return agp_release_helper(dev, AGP_ACQUIRE_USER);
780 return agp_setup_user(dev, (agp_setup *)ap->a_data);
782 case AGPIOC_ALLOCATE:
783 return agp_allocate_user(dev, (agp_allocate *)ap->a_data);
785 case AGPIOC_DEALLOCATE:
786 return agp_deallocate_user(dev, *(int *)ap->a_data);
789 return agp_bind_user(dev, (agp_bind *)ap->a_data);
792 return agp_unbind_user(dev, (agp_unbind *)ap->a_data);
800 agp_mmap(struct dev_mmap_args *ap)
802 cdev_t kdev = ap->a_head.a_dev;
803 device_t dev = KDEV2DEV(kdev);
804 struct agp_softc *sc = device_get_softc(dev);
806 if (ap->a_offset > AGP_GET_APERTURE(dev))
808 ap->a_result = atop(rman_get_start(sc->as_aperture) + ap->a_offset);
812 /* Implementation of the kernel api */
815 agp_find_device(void)
819 return devclass_get_device(agp_devclass, 0);
822 enum agp_acquire_state
823 agp_state(device_t dev)
825 struct agp_softc *sc = device_get_softc(dev);
830 agp_get_info(device_t dev, struct agp_info *info)
832 struct agp_softc *sc = device_get_softc(dev);
835 pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
836 info->ai_aperture_base = rman_get_start(sc->as_aperture);
837 info->ai_aperture_size = (rman_get_end(sc->as_aperture)
838 - rman_get_start(sc->as_aperture)) + 1;
839 info->ai_aperture_va = (vm_offset_t) rman_get_virtual(sc->as_aperture);
840 info->ai_memory_allowed = sc->as_maxmem;
841 info->ai_memory_used = sc->as_allocated;
845 agp_acquire(device_t dev)
847 return agp_acquire_helper(dev, AGP_ACQUIRE_KERNEL);
851 agp_release(device_t dev)
853 return agp_release_helper(dev, AGP_ACQUIRE_KERNEL);
857 agp_enable(device_t dev, u_int32_t mode)
859 return AGP_ENABLE(dev, mode);
862 void *agp_alloc_memory(device_t dev, int type, vm_size_t bytes)
864 return (void *) AGP_ALLOC_MEMORY(dev, type, bytes);
867 void agp_free_memory(device_t dev, void *handle)
869 struct agp_memory *mem = (struct agp_memory *) handle;
870 AGP_FREE_MEMORY(dev, mem);
873 int agp_bind_memory(device_t dev, void *handle, vm_offset_t offset)
875 struct agp_memory *mem = (struct agp_memory *) handle;
876 return AGP_BIND_MEMORY(dev, mem, offset);
879 int agp_unbind_memory(device_t dev, void *handle)
881 struct agp_memory *mem = (struct agp_memory *) handle;
882 return AGP_UNBIND_MEMORY(dev, mem);
885 void agp_memory_info(device_t dev, void *handle, struct
888 struct agp_memory *mem = (struct agp_memory *) handle;
890 mi->ami_size = mem->am_size;
891 mi->ami_physical = mem->am_physical;
892 mi->ami_offset = mem->am_offset;
893 mi->ami_is_bound = mem->am_is_bound;