| | 1 | /*- |
| | 2 | * Copyright (c) 2000 Doug Rabson |
| | 3 | * All rights reserved. |
| | 4 | * |
| | 5 | * Redistribution and use in source and binary forms, with or without |
| | 6 | * modification, are permitted provided that the following conditions |
| | 7 | * are met: |
| | 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. |
| | 13 | * |
| | 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 |
| | 24 | * SUCH DAMAGE. |
| | 25 | * |
| | 26 | * $FreeBSD: src/sys/dev/agp/agpvar.h,v 1.4 2007/11/12 21:51:37 jhb Exp $ |
| | 27 | * $DragonFly: src/sys/dev/agp/agpvar.h,v 1.4 2008/01/07 01:34:58 corecode Exp $ |
| | 28 | */ |
| | 29 | |
| | 30 | #ifndef _PCI_AGPVAR_H_ |
| | 31 | #define _PCI_AGPVAR_H_ |
| | 32 | |
| | 33 | /* |
| | 34 | * The AGP chipset can be acquired by user or kernel code. If the |
| | 35 | * chipset has already been acquired, it cannot be acquired by another |
| | 36 | * user until the previous user has released it. |
| | 37 | */ |
| | 38 | enum agp_acquire_state { |
| | 39 | AGP_ACQUIRE_FREE, |
| | 40 | AGP_ACQUIRE_USER, |
| | 41 | AGP_ACQUIRE_KERNEL |
| | 42 | }; |
| | 43 | |
| | 44 | /* |
| | 45 | * This structure is used to query the state of the AGP system. |
| | 46 | */ |
| | 47 | struct agp_info { |
| | 48 | u_int32_t ai_mode; |
| | 49 | vm_offset_t ai_aperture_base; |
| | 50 | vm_size_t ai_aperture_size; |
| | 51 | vm_size_t ai_memory_allowed; |
| | 52 | vm_size_t ai_memory_used; |
| | 53 | u_int32_t ai_devid; |
| | 54 | }; |
| | 55 | |
| | 56 | struct agp_memory_info { |
| | 57 | vm_size_t ami_size; /* size in bytes */ |
| | 58 | vm_offset_t ami_physical; /* bogus hack for i810 */ |
| | 59 | vm_offset_t ami_offset; /* page offset if bound */ |
| | 60 | int ami_is_bound; /* non-zero if bound */ |
| | 61 | }; |
| | 62 | |
| | 63 | /* |
| | 64 | * Find the AGP device and return it. |
| | 65 | */ |
| | 66 | device_t agp_find_device(void); |
| | 67 | |
| | 68 | /* |
| | 69 | * Return the current owner of the AGP chipset. |
| | 70 | */ |
| | 71 | enum agp_acquire_state agp_state(device_t dev); |
| | 72 | |
| | 73 | /* |
| | 74 | * Query the state of the AGP system. |
| | 75 | */ |
| | 76 | void agp_get_info(device_t dev, struct agp_info *info); |
| | 77 | |
| | 78 | /* |
| | 79 | * Acquire the AGP chipset for use by the kernel. Returns EBUSY if the |
| | 80 | * AGP chipset is already acquired by another user. |
| | 81 | */ |
| | 82 | int agp_acquire(device_t dev); |
| | 83 | |
| | 84 | /* |
| | 85 | * Release the AGP chipset. |
| | 86 | */ |
| | 87 | int agp_release(device_t dev); |
| | 88 | |
| | 89 | /* |
| | 90 | * Enable the agp hardware with the relavent mode. The mode bits are |
| | 91 | * defined in <pci/agpreg.h> |
| | 92 | */ |
| | 93 | int agp_enable(device_t dev, u_int32_t mode); |
| | 94 | |
| | 95 | /* |
| | 96 | * Allocate physical memory suitable for mapping into the AGP |
| | 97 | * aperture. The value returned is an opaque handle which can be |
| | 98 | * passed to agp_bind(), agp_unbind() or agp_deallocate(). |
| | 99 | */ |
| | 100 | void *agp_alloc_memory(device_t dev, int type, vm_size_t bytes); |
| | 101 | |
| | 102 | /* |
| | 103 | * Free memory which was allocated with agp_allocate(). |
| | 104 | */ |
| | 105 | void agp_free_memory(device_t dev, void *handle); |
| | 106 | |
| | 107 | /* |
| | 108 | * Bind memory allocated with agp_allocate() at a given offset within |
| | 109 | * the AGP aperture. Returns EINVAL if the memory is already bound or |
| | 110 | * the offset is not at an AGP page boundary. |
| | 111 | */ |
| | 112 | int agp_bind_memory(device_t dev, void *handle, vm_offset_t offset); |
| | 113 | |
| | 114 | /* |
| | 115 | * Unbind memory from the AGP aperture. Returns EINVAL if the memory |
| | 116 | * is not bound. |
| | 117 | */ |
| | 118 | int agp_unbind_memory(device_t dev, void *handle); |
| | 119 | |
| | 120 | /* |
| | 121 | * Retrieve information about a memory block allocated with |
| | 122 | * agp_alloc_memory(). |
| | 123 | */ |
| | 124 | void agp_memory_info(device_t dev, void *handle, struct agp_memory_info *mi); |
| | 125 | |
| | 126 | #define AGP_NORMAL_MEMORY 0 |
| | 127 | |
| | 128 | #define AGP_USER_TYPES (1 << 16) |
| | 129 | #define AGP_USER_MEMORY (AGP_USER_TYPES) |
| | 130 | #define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1) |
| | 131 | |
| | 132 | #endif /* !_PCI_AGPVAR_H_ */ |
projects / dragonfly.git / blame_incremental