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 1.23 2006/09/05 00:55:36 dillon 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>
45 #include <bus/pci/pcivar.h>
46 #include <bus/pci/pcireg.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");
66 #define CDEV_MAJOR 148
68 static d_open_t agp_open;
69 static d_close_t agp_close;
70 static d_ioctl_t agp_ioctl;
71 static d_mmap_t agp_mmap;
73 static struct dev_ops agp_ops = {
74 { "agp", CDEV_MAJOR, D_TTY },
81 static devclass_t agp_devclass;
82 #define KDEV2DEV(kdev) devclass_get_device(agp_devclass, minor(kdev))
84 /* Helper functions for implementing chipset mini drivers. */
95 agp_find_caps(device_t dev)
101 * Check the CAP_LIST bit of the PCI status register first.
103 status = pci_read_config(dev, PCIR_STATUS, 2);
104 if (!(status & 0x10))
108 * Traverse the capabilities list.
110 for (ptr = pci_read_config(dev, AGP_CAPPTR, 1);
113 u_int32_t capid = pci_read_config(dev, ptr, 4);
114 next = AGP_CAPID_GET_NEXT_PTR(capid);
117 * If this capability entry ID is 2, then we are done.
119 if (AGP_CAPID_GET_CAP_ID(capid) == 2)
127 * Find an AGP display device (if any).
130 agp_find_display(void)
132 devclass_t pci = devclass_find("pci");
133 device_t bus, dev = 0;
135 int busnum, numkids, i;
137 for (busnum = 0; busnum < devclass_get_maxunit(pci); busnum++) {
138 bus = devclass_get_device(pci, busnum);
141 device_get_children(bus, &kids, &numkids);
142 for (i = 0; i < numkids; i++) {
144 if (pci_get_class(dev) == PCIC_DISPLAY
145 && pci_get_subclass(dev) == PCIS_DISPLAY_VGA)
146 if (agp_find_caps(dev)) {
159 agp_alloc_gatt(device_t dev)
161 u_int32_t apsize = AGP_GET_APERTURE(dev);
162 u_int32_t entries = apsize >> AGP_PAGE_SHIFT;
163 struct agp_gatt *gatt;
167 "allocating GATT for aperture of size %dM\n",
168 apsize / (1024*1024));
171 device_printf(dev, "bad aperture size\n");
175 gatt = kmalloc(sizeof(struct agp_gatt), M_AGP, M_INTWAIT);
176 gatt->ag_entries = entries;
177 gatt->ag_virtual = contigmalloc(entries * sizeof(u_int32_t), M_AGP,
178 M_WAITOK, 0, ~0, PAGE_SIZE, 0);
179 if (!gatt->ag_virtual) {
181 device_printf(dev, "contiguous allocation failed\n");
185 bzero(gatt->ag_virtual, entries * sizeof(u_int32_t));
186 gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual);
193 agp_free_gatt(struct agp_gatt *gatt)
195 contigfree(gatt->ag_virtual,
196 gatt->ag_entries * sizeof(u_int32_t), M_AGP);
200 static int agp_max[][2] = {
211 #define agp_max_size (sizeof(agp_max) / sizeof(agp_max[0]))
214 agp_generic_attach(device_t dev)
216 struct agp_softc *sc = device_get_softc(dev);
220 * Find and map the aperture.
223 sc->as_aperture = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
224 0, ~0, 1, RF_ACTIVE);
225 if (!sc->as_aperture)
229 * Work out an upper bound for agp memory allocation. This
230 * uses a heurisitc table from the Linux driver.
232 memsize = ptoa(Maxmem) >> 20;
233 for (i = 0; i < agp_max_size; i++) {
234 if (memsize <= agp_max[i][0])
237 if (i == agp_max_size) i = agp_max_size - 1;
238 sc->as_maxmem = agp_max[i][1] << 20U;
241 * The lock is used to prevent re-entry to
242 * agp_generic_bind_memory() since that function can sleep.
244 lockinit(&sc->as_lock, "agplk", 0, 0);
247 * Initialise stuff for the userland device.
249 agp_devclass = devclass_find("agp");
250 TAILQ_INIT(&sc->as_memory);
253 dev_ops_add(&agp_ops, -1, device_get_unit(dev));
254 make_dev(&agp_ops, device_get_unit(dev), UID_ROOT, GID_WHEEL,
261 agp_generic_detach(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);
267 dev_ops_remove(&agp_ops, -1, device_get_unit(dev));
272 * This does the enable logic for v3, with the same topology
273 * restrictions as in place for v2 -- one bus, one device on the bus.
276 agp_v3_enable(device_t dev, device_t mdev, u_int32_t mode)
278 u_int32_t tstatus, mstatus;
280 int rq, sba, fw, rate, arqsz, cal;
282 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
283 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
285 /* Set RQ to the min of mode, tstatus and mstatus */
286 rq = AGP_MODE_GET_RQ(mode);
287 if (AGP_MODE_GET_RQ(tstatus) < rq)
288 rq = AGP_MODE_GET_RQ(tstatus);
289 if (AGP_MODE_GET_RQ(mstatus) < rq)
290 rq = AGP_MODE_GET_RQ(mstatus);
293 * ARQSZ - Set the value to the maximum one.
294 * Don't allow the mode register to override values.
296 arqsz = AGP_MODE_GET_ARQSZ(mode);
297 if (AGP_MODE_GET_ARQSZ(tstatus) > rq)
298 rq = AGP_MODE_GET_ARQSZ(tstatus);
299 if (AGP_MODE_GET_ARQSZ(mstatus) > rq)
300 rq = AGP_MODE_GET_ARQSZ(mstatus);
302 /* Calibration cycle - don't allow override by mode register */
303 cal = AGP_MODE_GET_CAL(tstatus);
304 if (AGP_MODE_GET_CAL(mstatus) < cal)
305 cal = AGP_MODE_GET_CAL(mstatus);
307 /* SBA must be supported for AGP v3. */
310 /* Set FW if all three support it. */
311 fw = (AGP_MODE_GET_FW(tstatus)
312 & AGP_MODE_GET_FW(mstatus)
313 & AGP_MODE_GET_FW(mode));
315 /* Figure out the max rate */
316 rate = (AGP_MODE_GET_RATE(tstatus)
317 & AGP_MODE_GET_RATE(mstatus)
318 & AGP_MODE_GET_RATE(mode));
319 if (rate & AGP_MODE_V3_RATE_8x)
320 rate = AGP_MODE_V3_RATE_8x;
322 rate = AGP_MODE_V3_RATE_4x;
324 device_printf(dev, "Setting AGP v3 mode %d\n", rate * 4);
326 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, 0, 4);
328 /* Construct the new mode word and tell the hardware */
329 command = AGP_MODE_SET_RQ(0, rq);
330 command = AGP_MODE_SET_ARQSZ(command, arqsz);
331 command = AGP_MODE_SET_CAL(command, cal);
332 command = AGP_MODE_SET_SBA(command, sba);
333 command = AGP_MODE_SET_FW(command, fw);
334 command = AGP_MODE_SET_RATE(command, rate);
335 command = AGP_MODE_SET_AGP(command, 1);
336 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, command, 4);
337 pci_write_config(mdev, agp_find_caps(mdev) + AGP_COMMAND, command, 4);
343 agp_v2_enable(device_t dev, device_t mdev, u_int32_t mode)
345 u_int32_t tstatus, mstatus;
347 int rq, sba, fw, rate;
349 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
350 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
352 /* Set RQ to the min of mode, tstatus and mstatus */
353 rq = AGP_MODE_GET_RQ(mode);
354 if (AGP_MODE_GET_RQ(tstatus) < rq)
355 rq = AGP_MODE_GET_RQ(tstatus);
356 if (AGP_MODE_GET_RQ(mstatus) < rq)
357 rq = AGP_MODE_GET_RQ(mstatus);
359 /* Set SBA if all three can deal with SBA */
360 sba = (AGP_MODE_GET_SBA(tstatus)
361 & AGP_MODE_GET_SBA(mstatus)
362 & AGP_MODE_GET_SBA(mode));
365 fw = (AGP_MODE_GET_FW(tstatus)
366 & AGP_MODE_GET_FW(mstatus)
367 & AGP_MODE_GET_FW(mode));
369 /* Figure out the max rate */
370 rate = (AGP_MODE_GET_RATE(tstatus)
371 & AGP_MODE_GET_RATE(mstatus)
372 & AGP_MODE_GET_RATE(mode));
373 if (rate & AGP_MODE_V2_RATE_4x)
374 rate = AGP_MODE_V2_RATE_4x;
375 else if (rate & AGP_MODE_V2_RATE_2x)
376 rate = AGP_MODE_V2_RATE_2x;
378 rate = AGP_MODE_V2_RATE_1x;
380 device_printf(dev, "Setting AGP v2 mode %d\n", rate);
382 /* Construct the new mode word and tell the hardware */
383 command = AGP_MODE_SET_RQ(0, rq);
384 command = AGP_MODE_SET_SBA(command, sba);
385 command = AGP_MODE_SET_FW(command, fw);
386 command = AGP_MODE_SET_RATE(command, rate);
387 command = AGP_MODE_SET_AGP(command, 1);
388 pci_write_config(dev, agp_find_caps(dev) + AGP_COMMAND, command, 4);
389 pci_write_config(mdev, agp_find_caps(mdev) + AGP_COMMAND, command, 4);
395 agp_generic_enable(device_t dev, u_int32_t mode)
397 device_t mdev = agp_find_display();
398 u_int32_t tstatus, mstatus;
401 AGP_DPF("can't find display\n");
405 tstatus = pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
406 mstatus = pci_read_config(mdev, agp_find_caps(mdev) + AGP_STATUS, 4);
409 * Check display and bridge for AGP v3 support. AGP v3 allows
410 * more variety in topology than v2, e.g. multiple AGP devices
411 * attached to one bridge, or multiple AGP bridges in one
412 * system. This doesn't attempt to address those situations,
413 * but should work fine for a classic single AGP slot system
416 if (AGP_MODE_GET_MODE_3(tstatus) && AGP_MODE_GET_MODE_3(mstatus))
417 return (agp_v3_enable(dev, mdev, mode));
419 return (agp_v2_enable(dev, mdev, mode));
423 agp_generic_alloc_memory(device_t dev, int type, vm_size_t size)
425 struct agp_softc *sc = device_get_softc(dev);
426 struct agp_memory *mem;
428 if ((size & (AGP_PAGE_SIZE - 1)) != 0)
431 if (sc->as_allocated + size > sc->as_maxmem)
435 printf("agp_generic_alloc_memory: unsupported type %d\n",
440 mem = kmalloc(sizeof *mem, M_AGP, M_INTWAIT);
441 mem->am_id = sc->as_nextid++;
444 mem->am_obj = vm_object_allocate(OBJT_DEFAULT, atop(round_page(size)));
445 mem->am_physical = 0;
447 mem->am_is_bound = 0;
448 TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link);
449 sc->as_allocated += size;
455 agp_generic_free_memory(device_t dev, struct agp_memory *mem)
457 struct agp_softc *sc = device_get_softc(dev);
459 if (mem->am_is_bound)
462 sc->as_allocated -= mem->am_size;
463 TAILQ_REMOVE(&sc->as_memory, mem, am_link);
464 vm_object_deallocate(mem->am_obj);
470 agp_generic_bind_memory(device_t dev, struct agp_memory *mem,
473 struct agp_softc *sc = device_get_softc(dev);
478 lockmgr(&sc->as_lock, LK_EXCLUSIVE);
480 if (mem->am_is_bound) {
481 device_printf(dev, "memory already bound\n");
482 lockmgr(&sc->as_lock, LK_RELEASE);
487 || (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,%#x,%#x\n",
490 (int) offset, (int)mem->am_size,
491 (int)AGP_GET_APERTURE(dev));
492 printf("Check BIOS's aperature size vs X\n");
493 lockmgr(&sc->as_lock, LK_RELEASE);
498 * Bind the individual pages and flush the chipset's
501 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
503 * Find a page from the object and wire it
504 * down. This page will be mapped using one or more
505 * entries in the GATT (assuming that PAGE_SIZE >=
506 * AGP_PAGE_SIZE. If this is the first call to bind,
507 * the pages will be allocated and zeroed.
509 m = vm_page_grab(mem->am_obj, OFF_TO_IDX(i),
510 VM_ALLOC_NORMAL | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
511 if ((m->flags & PG_ZERO) == 0)
512 vm_page_zero_fill(m);
513 AGP_DPF("found page pa=%#x\n", VM_PAGE_TO_PHYS(m));
517 * Install entries in the GATT, making sure that if
518 * AGP_PAGE_SIZE < PAGE_SIZE and mem->am_size is not
519 * aligned to PAGE_SIZE, we don't modify too many GATT
522 for (j = 0; j < PAGE_SIZE && i + j < mem->am_size;
523 j += AGP_PAGE_SIZE) {
524 vm_offset_t pa = VM_PAGE_TO_PHYS(m) + j;
525 AGP_DPF("binding offset %#x to pa %#x\n",
527 error = AGP_BIND_PAGE(dev, offset + i + j, pa);
530 * Bail out. Reverse all the mappings
531 * and unwire the pages.
534 for (k = 0; k < i + j; k += AGP_PAGE_SIZE)
535 AGP_UNBIND_PAGE(dev, offset + k);
536 for (k = 0; k <= i; k += PAGE_SIZE) {
537 m = vm_page_lookup(mem->am_obj,
539 vm_page_unwire(m, 0);
541 lockmgr(&sc->as_lock, LK_RELEASE);
549 * Flush the cpu cache since we are providing a new mapping
555 * Make sure the chipset gets the new mappings.
559 mem->am_offset = offset;
560 mem->am_is_bound = 1;
562 lockmgr(&sc->as_lock, LK_RELEASE);
568 agp_generic_unbind_memory(device_t dev, struct agp_memory *mem)
570 struct agp_softc *sc = device_get_softc(dev);
574 lockmgr(&sc->as_lock, LK_EXCLUSIVE);
576 if (!mem->am_is_bound) {
577 device_printf(dev, "memory is not bound\n");
578 lockmgr(&sc->as_lock, LK_RELEASE);
584 * Unbind the individual pages and flush the chipset's
585 * TLB. Unwire the pages so they can be swapped.
587 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE)
588 AGP_UNBIND_PAGE(dev, mem->am_offset + i);
589 for (i = 0; i < mem->am_size; i += PAGE_SIZE) {
590 m = vm_page_lookup(mem->am_obj, atop(i));
591 vm_page_unwire(m, 0);
598 mem->am_is_bound = 0;
600 lockmgr(&sc->as_lock, LK_RELEASE);
605 /* Helper functions for implementing user/kernel api */
608 agp_acquire_helper(device_t dev, enum agp_acquire_state state)
610 struct agp_softc *sc = device_get_softc(dev);
612 if (sc->as_state != AGP_ACQUIRE_FREE)
614 sc->as_state = state;
620 agp_release_helper(device_t dev, enum agp_acquire_state state)
622 struct agp_softc *sc = device_get_softc(dev);
624 if (sc->as_state == AGP_ACQUIRE_FREE)
627 if (sc->as_state != state)
630 sc->as_state = AGP_ACQUIRE_FREE;
634 static struct agp_memory *
635 agp_find_memory(device_t dev, int id)
637 struct agp_softc *sc = device_get_softc(dev);
638 struct agp_memory *mem;
640 AGP_DPF("searching for memory block %d\n", id);
641 TAILQ_FOREACH(mem, &sc->as_memory, am_link) {
642 AGP_DPF("considering memory block %d\n", mem->am_id);
643 if (mem->am_id == id)
649 /* Implementation of the userland ioctl api */
652 agp_info_user(device_t dev, agp_info *info)
654 struct agp_softc *sc = device_get_softc(dev);
656 bzero(info, sizeof *info);
657 info->bridge_id = pci_get_devid(dev);
659 pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
660 info->aper_base = rman_get_start(sc->as_aperture);
661 info->aper_size = AGP_GET_APERTURE(dev) >> 20;
662 info->pg_total = info->pg_system = sc->as_maxmem >> AGP_PAGE_SHIFT;
663 info->pg_used = sc->as_allocated >> AGP_PAGE_SHIFT;
669 agp_setup_user(device_t dev, agp_setup *setup)
671 return AGP_ENABLE(dev, setup->agp_mode);
675 agp_allocate_user(device_t dev, agp_allocate *alloc)
677 struct agp_memory *mem;
679 mem = AGP_ALLOC_MEMORY(dev,
681 alloc->pg_count << AGP_PAGE_SHIFT);
683 alloc->key = mem->am_id;
684 alloc->physical = mem->am_physical;
692 agp_deallocate_user(device_t dev, int id)
694 struct agp_memory *mem = agp_find_memory(dev, id);
697 AGP_FREE_MEMORY(dev, mem);
705 agp_bind_user(device_t dev, agp_bind *bind)
707 struct agp_memory *mem = agp_find_memory(dev, bind->key);
712 return AGP_BIND_MEMORY(dev, mem, bind->pg_start << AGP_PAGE_SHIFT);
716 agp_unbind_user(device_t dev, agp_unbind *unbind)
718 struct agp_memory *mem = agp_find_memory(dev, unbind->key);
723 return AGP_UNBIND_MEMORY(dev, mem);
727 agp_open(struct dev_open_args *ap)
729 dev_t kdev = ap->a_head.a_dev;
730 device_t dev = KDEV2DEV(kdev);
731 struct agp_softc *sc = device_get_softc(dev);
733 if (!sc->as_isopen) {
742 agp_close(struct dev_close_args *ap)
744 dev_t kdev = ap->a_head.a_dev;
745 device_t dev = KDEV2DEV(kdev);
746 struct agp_softc *sc = device_get_softc(dev);
747 struct agp_memory *mem;
750 * Clear the GATT and force release on last close
752 while ((mem = TAILQ_FIRST(&sc->as_memory)) != 0) {
753 if (mem->am_is_bound)
754 AGP_UNBIND_MEMORY(dev, mem);
755 AGP_FREE_MEMORY(dev, mem);
757 if (sc->as_state == AGP_ACQUIRE_USER)
758 agp_release_helper(dev, AGP_ACQUIRE_USER);
766 agp_ioctl(struct dev_ioctl_args *ap)
768 dev_t kdev = ap->a_head.a_dev;
769 device_t dev = KDEV2DEV(kdev);
773 return agp_info_user(dev, (agp_info *)ap->a_data);
776 return agp_acquire_helper(dev, AGP_ACQUIRE_USER);
779 return agp_release_helper(dev, AGP_ACQUIRE_USER);
782 return agp_setup_user(dev, (agp_setup *)ap->a_data);
784 case AGPIOC_ALLOCATE:
785 return agp_allocate_user(dev, (agp_allocate *)ap->a_data);
787 case AGPIOC_DEALLOCATE:
788 return agp_deallocate_user(dev, *(int *)ap->a_data);
791 return agp_bind_user(dev, (agp_bind *)ap->a_data);
794 return agp_unbind_user(dev, (agp_unbind *)ap->a_data);
802 agp_mmap(struct dev_mmap_args *ap)
804 dev_t kdev = ap->a_head.a_dev;
805 device_t dev = KDEV2DEV(kdev);
806 struct agp_softc *sc = device_get_softc(dev);
808 if (ap->a_offset > AGP_GET_APERTURE(dev))
810 ap->a_result = atop(rman_get_start(sc->as_aperture) + ap->a_offset);
814 /* Implementation of the kernel api */
817 agp_find_device(void)
821 return devclass_get_device(agp_devclass, 0);
824 enum agp_acquire_state
825 agp_state(device_t dev)
827 struct agp_softc *sc = device_get_softc(dev);
832 agp_get_info(device_t dev, struct agp_info *info)
834 struct agp_softc *sc = device_get_softc(dev);
837 pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
838 info->ai_aperture_base = rman_get_start(sc->as_aperture);
839 info->ai_aperture_size = (rman_get_end(sc->as_aperture)
840 - rman_get_start(sc->as_aperture)) + 1;
841 info->ai_aperture_va = (vm_offset_t) rman_get_virtual(sc->as_aperture);
842 info->ai_memory_allowed = sc->as_maxmem;
843 info->ai_memory_used = sc->as_allocated;
847 agp_acquire(device_t dev)
849 return agp_acquire_helper(dev, AGP_ACQUIRE_KERNEL);
853 agp_release(device_t dev)
855 return agp_release_helper(dev, AGP_ACQUIRE_KERNEL);
859 agp_enable(device_t dev, u_int32_t mode)
861 return AGP_ENABLE(dev, mode);
864 void *agp_alloc_memory(device_t dev, int type, vm_size_t bytes)
866 return (void *) AGP_ALLOC_MEMORY(dev, type, bytes);
869 void agp_free_memory(device_t dev, void *handle)
871 struct agp_memory *mem = (struct agp_memory *) handle;
872 AGP_FREE_MEMORY(dev, mem);
875 int agp_bind_memory(device_t dev, void *handle, vm_offset_t offset)
877 struct agp_memory *mem = (struct agp_memory *) handle;
878 return AGP_BIND_MEMORY(dev, mem, offset);
881 int agp_unbind_memory(device_t dev, void *handle)
883 struct agp_memory *mem = (struct agp_memory *) handle;
884 return AGP_UNBIND_MEMORY(dev, mem);
887 void agp_memory_info(device_t dev, void *handle, struct
890 struct agp_memory *mem = (struct agp_memory *) handle;
892 mi->ami_size = mem->am_size;
893 mi->ami_physical = mem->am_physical;
894 mi->ami_offset = mem->am_offset;
895 mi->ami_is_bound = mem->am_is_bound;