/* $NetBSD: agpvar.h,v 1.12 2006/08/17 17:11:28 christos 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/agppriv.h,v 1.3 2000/07/12 10:13:04 dfr Exp $ */ #ifndef _PCI_AGPVAR_H_ #define _PCI_AGPVAR_H_ #include #include struct agpbus_attach_args { char *_apa_busname; /* XXX placeholder */ struct pci_attach_args apa_pci_args; }; /* * The AGP chipset can be acquired by user or kernel code. If the * chipset has already been acquired, it cannot be acquired by another * user until the previous user has released it. */ enum agp_acquire_state { AGP_ACQUIRE_FREE, AGP_ACQUIRE_USER, AGP_ACQUIRE_KERNEL }; /* * This structure is used to query the state of the AGP system. */ struct agp_info { u_int32_t ai_mode; bus_addr_t ai_aperture_base; bus_size_t ai_aperture_size; vsize_t ai_memory_allowed; vsize_t ai_memory_used; u_int32_t ai_devid; }; struct agp_memory_info { vsize_t ami_size; /* size in bytes */ bus_addr_t ami_physical; /* bogus hack for i810 */ off_t ami_offset; /* page offset if bound */ int ami_is_bound; /* non-zero if bound */ }; #ifdef AGP_DEBUG #define AGP_DPF(x) do { \ printf("agp: "); \ printf x; \ } while (0) #else #define AGP_DPF(x) #endif #define AGPUNIT(x) minor(x) /* * Data structure to describe an AGP memory allocation. */ TAILQ_HEAD(agp_memory_list, agp_memory); struct agp_memory { TAILQ_ENTRY(agp_memory) am_link; /* wiring for the tailq */ int am_id; /* unique id for block */ vsize_t am_size; /* number of bytes allocated */ int am_type; /* chipset specific type */ off_t am_offset; /* page offset if bound */ int am_is_bound; /* non-zero if bound */ bus_addr_t am_physical; caddr_t am_virtual; bus_dmamap_t am_dmamap; bus_dma_segment_t *am_dmaseg; int am_nseg; }; struct agp_softc; struct agp_methods { u_int32_t (*get_aperture)(struct agp_softc *); int (*set_aperture)(struct agp_softc *, u_int32_t); int (*bind_page)(struct agp_softc *, off_t, bus_addr_t); int (*unbind_page)(struct agp_softc *, off_t); void (*flush_tlb)(struct agp_softc *); int (*enable)(struct agp_softc *, u_int32_t mode); struct agp_memory *(*alloc_memory)(struct agp_softc *, int, vsize_t); int (*free_memory)(struct agp_softc *, struct agp_memory *); int (*bind_memory)(struct agp_softc *, struct agp_memory *, off_t); int (*unbind_memory)(struct agp_softc *, struct agp_memory *); }; #define AGP_GET_APERTURE(sc) ((sc)->as_methods->get_aperture(sc)) #define AGP_SET_APERTURE(sc,a) ((sc)->as_methods->set_aperture((sc),(a))) #define AGP_BIND_PAGE(sc,o,p) ((sc)->as_methods->bind_page((sc),(o),(p))) #define AGP_UNBIND_PAGE(sc,o) ((sc)->as_methods->unbind_page((sc), (o))) #define AGP_FLUSH_TLB(sc) ((sc)->as_methods->flush_tlb(sc)) #define AGP_ENABLE(sc,m) ((sc)->as_methods->enable((sc),(m))) #define AGP_ALLOC_MEMORY(sc,t,s) ((sc)->as_methods->alloc_memory((sc),(t),(s))) #define AGP_FREE_MEMORY(sc,m) ((sc)->as_methods->free_memory((sc),(m))) #define AGP_BIND_MEMORY(sc,m,o) ((sc)->as_methods->bind_memory((sc),(m),(o))) #define AGP_UNBIND_MEMORY(sc,m) ((sc)->as_methods->unbind_memory((sc),(m))) /* * All chipset drivers must have this at the start of their softc. */ struct agp_softc { struct device as_dev; bus_space_tag_t as_apt; int as_capoff; bus_addr_t as_apaddr; bus_size_t as_apsize; int as_apflags; bus_dma_tag_t as_dmat; u_int32_t as_maxmem; /* allocation upper bound */ u_int32_t as_allocated; /* amount allocated */ enum agp_acquire_state as_state; struct agp_memory_list as_memory; /* list of allocated memory */ int as_nextid; /* next memory block id */ int as_isopen; /* user device is open */ #if 0 dev_t as_devnode; /* from make_dev */ #endif struct lock as_lock; /* lock for access to GATT */ struct agp_methods *as_methods; /* chipset-dependent API */ void *as_chipc; /* chipset-dependent state */ pci_chipset_tag_t as_pc; pcitag_t as_tag; pcireg_t as_id; }; struct agp_gatt { u_int32_t ag_entries; u_int32_t *ag_virtual; bus_addr_t ag_physical; bus_dmamap_t ag_dmamap; bus_dma_segment_t ag_dmaseg; size_t ag_size; }; int agpbusprint(void *, const char *); /* * Functions private to the AGP code. */ void agp_flush_cache(void); int agp_find_caps(pci_chipset_tag_t, pcitag_t); int agp_map_aperture(struct pci_attach_args *, struct agp_softc *, int); struct agp_gatt *agp_alloc_gatt(struct agp_softc *); void agp_free_gatt(struct agp_softc *, struct agp_gatt *); int agp_generic_attach(struct agp_softc *); int agp_generic_detach(struct agp_softc *); int agp_generic_enable(struct agp_softc *, u_int32_t); struct agp_memory *agp_generic_alloc_memory(struct agp_softc *, int, vsize_t); int agp_generic_free_memory(struct agp_softc *, struct agp_memory *); int agp_generic_bind_memory(struct agp_softc *, struct agp_memory *, off_t); int agp_generic_unbind_memory(struct agp_softc *, struct agp_memory *); /* The vendor has already been matched when these functions are called */ int agp_amd_match(const struct pci_attach_args *); int agp_ali_attach(struct device *, struct device *, void *); int agp_amd_attach(struct device *, struct device *, void *); int agp_i810_attach(struct device *, struct device *, void *); int agp_intel_attach(struct device *, struct device *, void *); int agp_via_attach(struct device *, struct device *, void *); int agp_sis_attach(struct device *, struct device *, void *); int agp_alloc_dmamem(bus_dma_tag_t, size_t, int, bus_dmamap_t *, caddr_t *, bus_addr_t *, bus_dma_segment_t *, int, int *); void agp_free_dmamem(bus_dma_tag_t, size_t, bus_dmamap_t, caddr_t, bus_dma_segment_t *, int) ; MALLOC_DECLARE(M_AGP); /* * Kernel API */ /* * Find the AGP device and return it. */ void *agp_find_device(int); /* * Return the current owner of the AGP chipset. */ enum agp_acquire_state agp_state(void *); /* * Query the state of the AGP system. */ void agp_get_info(void *, struct agp_info *); /* * Acquire the AGP chipset for use by the kernel. Returns EBUSY if the * AGP chipset is already acquired by another user. */ int agp_acquire(void *); /* * Release the AGP chipset. */ int agp_release(void *); /* * Enable the agp hardware with the relavent mode. The mode bits are * defined in */ int agp_enable(void *, u_int32_t); /* * Allocate physical memory suitable for mapping into the AGP * aperture. The value returned is an opaque handle which can be * passed to agp_bind(), agp_unbind() or agp_deallocate(). */ void *agp_alloc_memory(void *, int, vsize_t); /* * Free memory which was allocated with agp_allocate(). */ void agp_free_memory(void *, void *); /* * Bind memory allocated with agp_allocate() at a given offset within * the AGP aperture. Returns EINVAL if the memory is already bound or * the offset is not at an AGP page boundary. */ int agp_bind_memory(void *, void *, off_t); /* * Unbind memory from the AGP aperture. Returns EINVAL if the memory * is not bound. */ int agp_unbind_memory(void *, void *); /* * Retrieve information about a memory block allocated with * agp_alloc_memory(). */ void agp_memory_info(void *, void *, struct agp_memory_info *); #endif /* !_PCI_AGPPRIV_H_ */