/* $OpenBSD: agp.c,v 1.35 2012/11/13 13:37:24 mpi Exp $ */ /*- * Copyright (c) 2000 Doug Rabson * 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. * * $FreeBSD: src/sys/pci/agp.c,v 1.12 2001/05/19 01:28:07 alfred Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * the enable and {alloc, free, bind, unbind} memory routines have default * fallbacks, these macros do the right thing. The callbacks with no fallback * are called directly. These are mostly hacks around the weirdness of intel * integrated graphics, since they are not technically a true agp chipset, * but provide an almost identical interface. */ int agp_generic_enable(struct agp_softc *, u_int32_t); struct agp_memory * agp_generic_alloc_memory(struct agp_softc *, int, vsize_t size); int agp_generic_free_memory(struct agp_softc *, struct agp_memory *); void agp_attach(struct device *, struct device *, void *); int agp_probe(struct device *, void *, void *); int agpbusprint(void *, const char *); paddr_t agpmmap(dev_t, off_t, int); int agpioctl(dev_t, u_long, caddr_t, int, struct proc *); int agpopen(dev_t, int, int, struct proc *); int agpclose(dev_t, int, int , struct proc *); struct agp_memory *agp_find_memory(struct agp_softc *sc, int id); /* userland ioctl functions */ int agpvga_match(struct pci_attach_args *); int agp_info_user(void *, agp_info *); int agp_setup_user(void *, agp_setup *); int agp_allocate_user(void *, agp_allocate *); int agp_deallocate_user(void *, int); int agp_bind_user(void *, agp_bind *); int agp_unbind_user(void *, agp_unbind *); int agp_acquire_helper(void *dev, enum agp_acquire_state state); int agp_release_helper(void *dev, enum agp_acquire_state state); int agpdev_print(void *aux, const char *pnp) { if (pnp) { printf("agp at %s", pnp); } return (UNCONF); } int agpbus_probe(struct agp_attach_args *aa) { struct pci_attach_args *pa = aa->aa_pa; if (strncmp(aa->aa_busname, "agp", 3) == 0 && PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_HOST) return (1); return (0); } /* * Find the video card hanging off the agp bus XXX assumes only one bus */ int agpvga_match(struct pci_attach_args *pa) { if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_DISPLAY_VGA) { if (pci_get_capability(pa->pa_pc, pa->pa_tag, PCI_CAP_AGP, NULL, NULL)) return (1); } return (0); } struct device * agp_attach_bus(struct pci_attach_args *pa, const struct agp_methods *methods, bus_addr_t apaddr, bus_size_t apsize, struct device *dev) { struct agpbus_attach_args arg; arg.aa_methods = methods; arg.aa_pa = pa; arg.aa_apaddr = apaddr; arg.aa_apsize = apsize; printf("\n"); /* newline from the driver that called us */ return (config_found(dev, &arg, agpdev_print)); } int agp_probe(struct device *parent, void *match, void *aux) { /* * we don't do any checking here, driver we're attaching this * interface to should have already done it. */ return (1); } void agp_attach(struct device *parent, struct device *self, void *aux) { struct agpbus_attach_args *aa = aux; struct pci_attach_args *pa = aa->aa_pa; struct agp_softc *sc = (struct agp_softc *)self; u_int memsize; int i; sc->sc_chipc = parent; sc->sc_methods = aa->aa_methods; sc->sc_apaddr = aa->aa_apaddr; sc->sc_apsize = aa->aa_apsize; static const int agp_max[][2] = { {0, 0}, {32, 4}, {64, 28}, {128, 96}, {256, 204}, {512, 440}, {1024, 942}, {2048, 1920}, {4096, 3932} }; /* * Work out an upper bound for agp memory allocation. This * uses a heuristic table from the Linux driver. */ memsize = ptoa(physmem) >> 20; for (i = 0; i < nitems(agp_max) && memsize > agp_max[i][0]; i++) ; if (i == nitems(agp_max)) i = nitems(agp_max) - 1; sc->sc_maxmem = agp_max[i][1] << 20; /* * The lock is used to prevent re-entry to * agp_generic_bind_memory() since that function can sleep. */ rw_init(&sc->sc_lock, "agplk"); TAILQ_INIT(&sc->sc_memory); sc->sc_pcitag = pa->pa_tag; sc->sc_pc = pa->pa_pc; sc->sc_id = pa->pa_id; sc->sc_dmat = pa->pa_dmat; pci_get_capability(sc->sc_pc, sc->sc_pcitag, PCI_CAP_AGP, &sc->sc_capoff, NULL); printf(": aperture at 0x%lx, size 0x%lx\n", (u_long)sc->sc_apaddr, (u_long)sc->sc_apsize); } struct cfattach agp_ca = { sizeof(struct agp_softc), agp_probe, agp_attach, NULL, NULL }; struct cfdriver agp_cd = { NULL, "agp", DV_DULL }; paddr_t agpmmap(dev_t dev, off_t off, int prot) { struct agp_softc *sc = agp_find_device(AGPUNIT(dev)); if (sc == NULL || sc->sc_chipc == NULL) return (-1); if (sc->sc_apaddr) { if (off > sc->sc_apsize) return (-1); /* * XXX this should use bus_space_mmap() but it's not * availiable on all archs. */ return (sc->sc_apaddr + off); } return (-1); } int agpopen(dev_t dev, int oflags, int devtype, struct proc *p) { struct agp_softc *sc = agp_find_device(AGPUNIT(dev)); if (sc == NULL || sc->sc_chipc == NULL) return (ENXIO); if (!sc->sc_opened) sc->sc_opened = 1; else return (EBUSY); return (0); } int agpioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *pb) { struct agp_softc *sc = agp_find_device(AGPUNIT(dev)); if (sc == NULL) return (ENODEV); if (sc->sc_methods == NULL || sc->sc_chipc == NULL) return (ENXIO); if (cmd != AGPIOC_INFO && !(flag & FWRITE)) return (EPERM); switch(cmd) { case AGPIOC_INFO: return (agp_info_user(sc, (agp_info *)addr)); case AGPIOC_ACQUIRE: return (agp_acquire_helper(sc, AGP_ACQUIRE_USER)); case AGPIOC_RELEASE: return (agp_release_helper(sc, AGP_ACQUIRE_USER)); case AGPIOC_SETUP: return (agp_setup_user(sc, (agp_setup *)addr)); case AGPIOC_ALLOCATE: return (agp_allocate_user(sc, (agp_allocate *)addr)); case AGPIOC_DEALLOCATE: return (agp_deallocate_user(sc, *(int *)addr)); case AGPIOC_BIND: return (agp_bind_user(sc, (agp_bind *)addr)); case AGPIOC_UNBIND: return (agp_unbind_user(sc, (agp_unbind *)addr)); default: return (ENOTTY); } } int agpclose(dev_t dev, int flags, int devtype, struct proc *p) { struct agp_softc *sc = agp_find_device(AGPUNIT(dev)); struct agp_memory *mem; /* * Clear the GATT and force release on last close */ if (sc->sc_state == AGP_ACQUIRE_USER) { while ((mem = TAILQ_FIRST(&sc->sc_memory)) != 0) { if (mem->am_is_bound) { agp_unbind_memory(sc, mem); } agp_free_memory(sc, mem); } agp_release_helper(sc, AGP_ACQUIRE_USER); } sc->sc_opened = 0; return (0); } struct agp_memory * agp_find_memory(struct agp_softc *sc, int id) { struct agp_memory *mem; AGP_DPF("searching for memory block %d\n", id); TAILQ_FOREACH(mem, &sc->sc_memory, am_link) { AGP_DPF("considering memory block %d\n", mem->am_id); if (mem->am_id == id) return (mem); } return (0); } struct agp_gatt * agp_alloc_gatt(bus_dma_tag_t dmat, u_int32_t apsize) { struct agp_gatt *gatt; u_int32_t entries = apsize >> AGP_PAGE_SHIFT; gatt = malloc(sizeof(*gatt), M_AGP, M_NOWAIT | M_ZERO); if (!gatt) return (NULL); gatt->ag_entries = entries; gatt->ag_size = entries * sizeof(u_int32_t); if (agp_alloc_dmamem(dmat, gatt->ag_size, &gatt->ag_dmamap, &gatt->ag_physical, &gatt->ag_dmaseg) != 0) return (NULL); if (bus_dmamem_map(dmat, &gatt->ag_dmaseg, 1, gatt->ag_size, (caddr_t *)&gatt->ag_virtual, BUS_DMA_NOWAIT) != 0) { agp_free_dmamem(dmat, gatt->ag_size, gatt->ag_dmamap, &gatt->ag_dmaseg); return (NULL); } agp_flush_cache(); return (gatt); } void agp_free_gatt(bus_dma_tag_t dmat, struct agp_gatt *gatt) { bus_dmamem_unmap(dmat, (caddr_t)gatt->ag_virtual, gatt->ag_size); agp_free_dmamem(dmat, gatt->ag_size, gatt->ag_dmamap, &gatt->ag_dmaseg); free(gatt, M_AGP); } int agp_generic_enable(struct agp_softc *sc, u_int32_t mode) { struct pci_attach_args pa; pcireg_t tstatus, mstatus, command; int rq, sba, fw, rate, capoff; if (pci_find_device(&pa, agpvga_match) == 0 || pci_get_capability(pa.pa_pc, pa.pa_tag, PCI_CAP_AGP, &capoff, NULL) == 0) { printf("agp_generic_enable: not an AGP capable device\n"); return (-1); } tstatus = pci_conf_read(sc->sc_pc, sc->sc_pcitag, sc->sc_capoff + AGP_STATUS); /* display agp mode */ mstatus = pci_conf_read(pa.pa_pc, pa.pa_tag, capoff + AGP_STATUS); /* Set RQ to the min of mode, tstatus and mstatus */ rq = AGP_MODE_GET_RQ(mode); if (AGP_MODE_GET_RQ(tstatus) < rq) rq = AGP_MODE_GET_RQ(tstatus); if (AGP_MODE_GET_RQ(mstatus) < rq) rq = AGP_MODE_GET_RQ(mstatus); /* Set SBA if all three can deal with SBA */ sba = (AGP_MODE_GET_SBA(tstatus) & AGP_MODE_GET_SBA(mstatus) & AGP_MODE_GET_SBA(mode)); /* Similar for FW */ fw = (AGP_MODE_GET_FW(tstatus) & AGP_MODE_GET_FW(mstatus) & AGP_MODE_GET_FW(mode)); /* Figure out the max rate */ rate = (AGP_MODE_GET_RATE(tstatus) & AGP_MODE_GET_RATE(mstatus) & AGP_MODE_GET_RATE(mode)); if (rate & AGP_MODE_RATE_4x) rate = AGP_MODE_RATE_4x; else if (rate & AGP_MODE_RATE_2x) rate = AGP_MODE_RATE_2x; else rate = AGP_MODE_RATE_1x; /* Construct the new mode word and tell the hardware */ command = AGP_MODE_SET_RQ(0, rq); command = AGP_MODE_SET_SBA(command, sba); command = AGP_MODE_SET_FW(command, fw); command = AGP_MODE_SET_RATE(command, rate); command = AGP_MODE_SET_AGP(command, 1); pci_conf_write(sc->sc_pc, sc->sc_pcitag, sc->sc_capoff + AGP_COMMAND, command); pci_conf_write(pa.pa_pc, pa.pa_tag, capoff + AGP_COMMAND, command); return (0); } struct agp_memory * agp_generic_alloc_memory(struct agp_softc *sc, int type, vsize_t size) { struct agp_memory *mem; if (type != 0) { printf("agp_generic_alloc_memory: unsupported type %d\n", type); return (0); } mem = malloc(sizeof *mem, M_AGP, M_WAITOK | M_ZERO); if (bus_dmamap_create(sc->sc_dmat, size, size / PAGE_SIZE + 1, size, 0, BUS_DMA_NOWAIT, &mem->am_dmamap) != 0) { free(mem, M_AGP); return (NULL); } mem->am_id = sc->sc_nextid++; mem->am_size = size; TAILQ_INSERT_TAIL(&sc->sc_memory, mem, am_link); sc->sc_allocated += size; return (mem); } int agp_generic_free_memory(struct agp_softc *sc, struct agp_memory *mem) { if (mem->am_is_bound) return (EBUSY); sc->sc_allocated -= mem->am_size; TAILQ_REMOVE(&sc->sc_memory, mem, am_link); bus_dmamap_destroy(sc->sc_dmat, mem->am_dmamap); free(mem, M_AGP); return (0); } int agp_generic_bind_memory(struct agp_softc *sc, struct agp_memory *mem, bus_size_t offset) { bus_dma_segment_t *segs, *seg; bus_addr_t apaddr = sc->sc_apaddr + offset; bus_size_t done, i, j; int nseg, error; rw_enter_write(&sc->sc_lock); if (mem->am_is_bound) { printf("AGP: memory already bound\n"); rw_exit_write(&sc->sc_lock); return (EINVAL); } if (offset < 0 || (offset & (AGP_PAGE_SIZE - 1)) != 0 || offset + mem->am_size > sc->sc_apsize) { printf("AGP: binding memory at bad offset %#lx\n", (unsigned long) offset); rw_exit_write(&sc->sc_lock); return (EINVAL); } /* * The memory here needs to be directly accessable from the * AGP video card, so it should be allocated using bus_dma. * However, it need not be contiguous, since individual pages * are translated using the GATT. */ nseg = (mem->am_size + PAGE_SIZE - 1) / PAGE_SIZE; segs = malloc(nseg * sizeof *segs, M_AGP, M_WAITOK); if ((error = bus_dmamem_alloc(sc->sc_dmat, mem->am_size, PAGE_SIZE, 0, segs, nseg, &mem->am_nseg, BUS_DMA_ZERO | BUS_DMA_WAITOK)) != 0) { free(segs, M_AGP); rw_exit_write(&sc->sc_lock); AGP_DPF("bus_dmamem_alloc failed %d\n", error); return (error); } if ((error = bus_dmamap_load_raw(sc->sc_dmat, mem->am_dmamap, segs, mem->am_nseg, mem->am_size, BUS_DMA_WAITOK)) != 0) { bus_dmamem_free(sc->sc_dmat, segs, mem->am_nseg); free(segs, M_AGP); rw_exit_write(&sc->sc_lock); AGP_DPF("bus_dmamap_load failed %d\n", error); return (error); } mem->am_dmaseg = segs; /* * Install entries in the GATT, making sure that if * AGP_PAGE_SIZE < PAGE_SIZE and mem->am_size is not * aligned to PAGE_SIZE, we don't modify too many GATT * entries. Flush chipset tlb when done. */ done = 0; for (i = 0; i < mem->am_dmamap->dm_nsegs; i++) { seg = &mem->am_dmamap->dm_segs[i]; for (j = 0; j < seg->ds_len && (done + j) < mem->am_size; j += AGP_PAGE_SIZE) { AGP_DPF("binding offset %#lx to pa %#lx\n", (unsigned long)(offset + done + j), (unsigned long)seg->ds_addr + j); sc->sc_methods->bind_page(sc->sc_chipc, apaddr + done + j, seg->ds_addr + j, 0); } done += seg->ds_len; } /* * Flush the cpu cache since we are providing a new mapping * for these pages. */ agp_flush_cache(); /* * Make sure the chipset gets the new mappings. */ sc->sc_methods->flush_tlb(sc->sc_chipc); mem->am_offset = offset; mem->am_is_bound = 1; rw_exit_write(&sc->sc_lock); return (0); } int agp_generic_unbind_memory(struct agp_softc *sc, struct agp_memory *mem) { bus_addr_t apaddr = sc->sc_apaddr + mem->am_offset; bus_size_t i; rw_enter_write(&sc->sc_lock); if (mem->am_is_bound == 0) { printf("AGP: memory is not bound\n"); rw_exit_write(&sc->sc_lock); return (EINVAL); } /* * Unbind the individual pages and flush the chipset's * TLB. Unwire the pages so they can be swapped. */ for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) sc->sc_methods->unbind_page(sc->sc_chipc, apaddr + i); agp_flush_cache(); sc->sc_methods->flush_tlb(sc->sc_chipc); bus_dmamap_unload(sc->sc_dmat, mem->am_dmamap); bus_dmamem_free(sc->sc_dmat, mem->am_dmaseg, mem->am_nseg); free(mem->am_dmaseg, M_AGP); mem->am_offset = 0; mem->am_is_bound = 0; rw_exit_write(&sc->sc_lock); return (0); } /* * Allocates a single-segment block of zeroed, wired dma memory. */ int agp_alloc_dmamem(bus_dma_tag_t tag, size_t size, bus_dmamap_t *mapp, bus_addr_t *baddr, bus_dma_segment_t *seg) { int error, level = 0, nseg; if ((error = bus_dmamem_alloc(tag, size, PAGE_SIZE, 0, seg, 1, &nseg, BUS_DMA_NOWAIT | BUS_DMA_ZERO)) != 0) goto out; level++; if ((error = bus_dmamap_create(tag, size, nseg, size, 0, BUS_DMA_NOWAIT, mapp)) != 0) goto out; level++; if ((error = bus_dmamap_load_raw(tag, *mapp, seg, nseg, size, BUS_DMA_NOWAIT)) != 0) goto out; *baddr = (*mapp)->dm_segs[0].ds_addr; return (0); out: switch (level) { case 2: bus_dmamap_destroy(tag, *mapp); /* FALLTHROUGH */ case 1: bus_dmamem_free(tag, seg, nseg); break; default: break; } return (error); } void agp_free_dmamem(bus_dma_tag_t tag, size_t size, bus_dmamap_t map, bus_dma_segment_t *seg) { bus_dmamap_unload(tag, map); bus_dmamap_destroy(tag, map); bus_dmamem_free(tag, seg, 1); } /* Helper functions used in both user and kernel APIs */ int agp_acquire_helper(void *dev, enum agp_acquire_state state) { struct agp_softc *sc = (struct agp_softc *)dev; if (sc->sc_chipc == NULL) return (EINVAL); if (sc->sc_state != AGP_ACQUIRE_FREE) return (EBUSY); sc->sc_state = state; return (0); } int agp_release_helper(void *dev, enum agp_acquire_state state) { struct agp_softc *sc = (struct agp_softc *)dev; struct agp_memory* mem; if (sc->sc_state == AGP_ACQUIRE_FREE) return (0); if (sc->sc_state != state) return (EBUSY); /* * Clear out the aperture and free any * outstanding memory blocks. */ TAILQ_FOREACH(mem, &sc->sc_memory, am_link) { if (mem->am_is_bound) { printf("agp_release_helper: mem %d is bound\n", mem->am_id); agp_unbind_memory(sc, mem); } } sc->sc_state = AGP_ACQUIRE_FREE; return (0); } /* Implementation of the userland ioctl API */ int agp_info_user(void *dev, agp_info *info) { struct agp_softc *sc = (struct agp_softc *) dev; if (!sc->sc_chipc) return (ENXIO); bzero(info, sizeof *info); info->bridge_id = sc->sc_id; if (sc->sc_capoff != 0) info->agp_mode = pci_conf_read(sc->sc_pc, sc->sc_pcitag, AGP_STATUS + sc->sc_capoff); else info->agp_mode = 0; /* i810 doesn't have real AGP */ info->aper_base = sc->sc_apaddr; info->aper_size = sc->sc_apsize >> 20; info->pg_total = info->pg_system = sc->sc_maxmem >> AGP_PAGE_SHIFT; info->pg_used = sc->sc_allocated >> AGP_PAGE_SHIFT; return (0); } int agp_setup_user(void *dev, agp_setup *setup) { struct agp_softc *sc = dev; return (agp_enable(sc, setup->agp_mode)); } int agp_allocate_user(void *dev, agp_allocate *alloc) { struct agp_softc *sc = dev; struct agp_memory *mem; size_t size = alloc->pg_count << AGP_PAGE_SHIFT; if (sc->sc_allocated + size > sc->sc_maxmem) return (EINVAL); mem = agp_alloc_memory(sc, alloc->type, size); if (mem) { alloc->key = mem->am_id; alloc->physical = mem->am_physical; return (0); } else return (ENOMEM); } int agp_deallocate_user(void *dev, int id) { struct agp_softc *sc = dev; struct agp_memory *mem; if ((mem = agp_find_memory(sc, id)) != NULL) { agp_free_memory(sc, mem); return (0); } else return (ENOENT); } int agp_bind_user(void *dev, agp_bind *bind) { struct agp_softc *sc = dev; struct agp_memory *mem; if ((mem = agp_find_memory(sc, bind->key)) == NULL) return (ENOENT); return (agp_bind_memory(sc, mem, bind->pg_start << AGP_PAGE_SHIFT)); } int agp_unbind_user(void *dev, agp_unbind *unbind) { struct agp_softc *sc = dev; struct agp_memory *mem; if ((mem = agp_find_memory(sc, unbind->key)) == NULL) return (ENOENT); return (agp_unbind_memory(sc, mem)); } /* Implementation of the kernel api */ void * agp_find_device(int unit) { if (unit >= agp_cd.cd_ndevs || unit < 0) return (NULL); return (agp_cd.cd_devs[unit]); } enum agp_acquire_state agp_state(void *dev) { struct agp_softc *sc = (struct agp_softc *) dev; return (sc->sc_state); } void agp_get_info(void *dev, struct agp_info *info) { struct agp_softc *sc = (struct agp_softc *)dev; if (sc->sc_capoff != 0) info->ai_mode = pci_conf_read(sc->sc_pc, sc->sc_pcitag, AGP_STATUS + sc->sc_capoff); else info->ai_mode = 0; /* i810 doesn't have real AGP */ info->ai_aperture_base = sc->sc_apaddr; info->ai_aperture_size = sc->sc_apsize; info->ai_memory_allowed = sc->sc_maxmem; info->ai_memory_used = sc->sc_allocated; } int agp_acquire(void *dev) { struct agp_softc *sc = (struct agp_softc *)dev; return (agp_acquire_helper(sc, AGP_ACQUIRE_KERNEL)); } int agp_release(void *dev) { struct agp_softc *sc = (struct agp_softc *)dev; return (agp_release_helper(sc, AGP_ACQUIRE_KERNEL)); } int agp_enable(void *dev, u_int32_t mode) { struct agp_softc *sc = dev; int ret; if (sc->sc_methods->enable != NULL) { ret = sc->sc_methods->enable(sc->sc_chipc, mode); } else { ret = agp_generic_enable(sc, mode); } return (ret); } void * agp_alloc_memory(void *dev, int type, vsize_t bytes) { struct agp_softc *sc = dev; struct agp_memory *mem; if (sc->sc_methods->alloc_memory != NULL) { mem = sc->sc_methods->alloc_memory(sc->sc_chipc, type, bytes); } else { mem = agp_generic_alloc_memory(sc, type, bytes); } return (mem); } void agp_free_memory(void *dev, void *handle) { struct agp_softc *sc = dev; struct agp_memory *mem = handle; if (sc->sc_methods->free_memory != NULL) { sc->sc_methods->free_memory(sc->sc_chipc, mem); } else { agp_generic_free_memory(sc, mem); } } int agp_bind_memory(void *dev, void *handle, off_t offset) { struct agp_softc *sc = dev; struct agp_memory *mem = handle; int ret; if (sc->sc_methods->bind_memory != NULL) { ret = sc->sc_methods->bind_memory(sc->sc_chipc, mem, offset); } else { ret = agp_generic_bind_memory(sc, mem, offset); } return (ret); } int agp_unbind_memory(void *dev, void *handle) { struct agp_softc *sc = dev; struct agp_memory *mem = handle; int ret; if (sc->sc_methods->unbind_memory != NULL) { ret = sc->sc_methods->unbind_memory(sc->sc_chipc, mem); } else { ret = agp_generic_unbind_memory(sc, mem); } return (ret); } void agp_memory_info(void *dev, void *handle, struct agp_memory_info *mi) { struct agp_memory *mem = (struct agp_memory *) handle; mi->ami_size = mem->am_size; mi->ami_physical = mem->am_physical; mi->ami_offset = mem->am_offset; mi->ami_is_bound = mem->am_is_bound; }