nobled | ed7d177 | 2010-09-09 10:07:21 +0100 | [diff] [blame] | 1 | /************************************************************************** |
| 2 | * |
| 3 | * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
| 11 | * permit persons to whom the Software is furnished to do so, subject to |
| 12 | * the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial portions |
| 16 | * of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| 21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| 22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| 23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| 24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 25 | * |
| 26 | **************************************************************************/ |
| 27 | |
| 28 | |
| 29 | #define HAVE_STDINT_H |
| 30 | #define _FILE_OFFSET_BITS 64 |
| 31 | |
| 32 | #include <errno.h> |
| 33 | #include <stdio.h> |
| 34 | #include <stdlib.h> |
| 35 | #include <string.h> |
| 36 | #include "internal.h" |
| 37 | |
| 38 | #include <sys/mman.h> |
| 39 | #include <sys/ioctl.h> |
| 40 | #include "xf86drm.h" |
| 41 | |
| 42 | #include "radeon_drm.h" |
| 43 | |
| 44 | |
| 45 | #define ALIGNMENT 512 |
| 46 | |
| 47 | struct radeon_bo |
| 48 | { |
| 49 | struct kms_bo base; |
| 50 | unsigned map_count; |
| 51 | }; |
| 52 | |
| 53 | static int |
| 54 | radeon_get_prop(struct kms_driver *kms, unsigned key, unsigned *out) |
| 55 | { |
| 56 | switch (key) { |
| 57 | case KMS_BO_TYPE: |
| 58 | *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8; |
| 59 | break; |
| 60 | default: |
| 61 | return -EINVAL; |
| 62 | } |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | static int |
| 67 | radeon_destroy(struct kms_driver *kms) |
| 68 | { |
| 69 | free(kms); |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static int |
| 74 | radeon_bo_create(struct kms_driver *kms, |
| 75 | const unsigned width, const unsigned height, |
| 76 | const enum kms_bo_type type, const unsigned *attr, |
| 77 | struct kms_bo **out) |
| 78 | { |
| 79 | struct drm_radeon_gem_create arg; |
| 80 | unsigned size, pitch; |
| 81 | struct radeon_bo *bo; |
| 82 | int i, ret; |
| 83 | |
| 84 | for (i = 0; attr[i]; i += 2) { |
| 85 | switch (attr[i]) { |
| 86 | case KMS_WIDTH: |
| 87 | case KMS_HEIGHT: |
| 88 | case KMS_BO_TYPE: |
| 89 | break; |
| 90 | default: |
| 91 | return -EINVAL; |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | switch (type) { |
| 96 | case KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8: |
| 97 | pitch = 4 * 64; |
| 98 | size = 4 * 64 * 64; |
| 99 | break; |
| 100 | case KMS_BO_TYPE_SCANOUT_X8R8G8B8: |
| 101 | pitch = width * 4; |
| 102 | pitch = (pitch + ALIGNMENT - 1) & ~(ALIGNMENT - 1); |
| 103 | size = pitch * height; |
| 104 | break; |
| 105 | default: |
| 106 | return -EINVAL; |
| 107 | } |
| 108 | |
| 109 | bo = calloc(1, sizeof(*bo)); |
| 110 | if (!bo) |
| 111 | return -ENOMEM; |
| 112 | |
| 113 | memset(&arg, 0, sizeof(arg)); |
| 114 | arg.size = size; |
| 115 | arg.alignment = ALIGNMENT; |
| 116 | arg.initial_domain = RADEON_GEM_DOMAIN_CPU; |
| 117 | arg.flags = 0; |
| 118 | arg.handle = 0; |
| 119 | |
| 120 | ret = drmCommandWriteRead(kms->fd, DRM_RADEON_GEM_CREATE, |
| 121 | &arg, sizeof(arg)); |
| 122 | if (ret) |
| 123 | goto err_free; |
| 124 | |
| 125 | bo->base.kms = kms; |
| 126 | bo->base.handle = arg.handle; |
| 127 | bo->base.size = size; |
| 128 | bo->base.pitch = pitch; |
| 129 | bo->base.offset = 0; |
| 130 | bo->map_count = 0; |
| 131 | |
| 132 | *out = &bo->base; |
| 133 | |
| 134 | return 0; |
| 135 | |
| 136 | err_free: |
| 137 | free(bo); |
| 138 | return ret; |
| 139 | } |
| 140 | |
| 141 | static int |
| 142 | radeon_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out) |
| 143 | { |
| 144 | switch (key) { |
| 145 | default: |
| 146 | return -EINVAL; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | static int |
| 151 | radeon_bo_map(struct kms_bo *_bo, void **out) |
| 152 | { |
| 153 | struct radeon_bo *bo = (struct radeon_bo *)_bo; |
| 154 | struct drm_radeon_gem_mmap arg; |
| 155 | void *map = NULL; |
| 156 | int ret; |
| 157 | |
| 158 | if (bo->base.ptr) { |
| 159 | bo->map_count++; |
| 160 | *out = bo->base.ptr; |
| 161 | return 0; |
| 162 | } |
| 163 | |
| 164 | memset(&arg, 0, sizeof(arg)); |
| 165 | arg.handle = bo->base.handle; |
| 166 | arg.offset = bo->base.offset; |
| 167 | arg.size = (uint64_t)bo->base.size; |
| 168 | |
| 169 | ret = drmCommandWriteRead(bo->base.kms->fd, DRM_RADEON_GEM_MMAP, |
| 170 | &arg, sizeof(arg)); |
| 171 | if (ret) |
| 172 | return -errno; |
| 173 | |
| 174 | map = mmap(0, arg.size, PROT_READ | PROT_WRITE, MAP_SHARED, |
| 175 | bo->base.kms->fd, arg.addr_ptr); |
| 176 | if (map == MAP_FAILED) |
| 177 | return -errno; |
| 178 | |
| 179 | bo->base.ptr = map; |
| 180 | bo->map_count++; |
| 181 | *out = bo->base.ptr; |
| 182 | |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | static int |
| 187 | radeon_bo_unmap(struct kms_bo *_bo) |
| 188 | { |
| 189 | struct radeon_bo *bo = (struct radeon_bo *)_bo; |
| 190 | if (--bo->map_count == 0) { |
| 191 | munmap(bo->base.ptr, bo->base.size); |
| 192 | bo->base.ptr = NULL; |
| 193 | } |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | static int |
| 198 | radeon_bo_destroy(struct kms_bo *_bo) |
| 199 | { |
| 200 | struct radeon_bo *bo = (struct radeon_bo *)_bo; |
| 201 | struct drm_gem_close arg; |
| 202 | int ret; |
| 203 | |
| 204 | if (bo->base.ptr) { |
| 205 | /* XXX Sanity check map_count */ |
| 206 | munmap(bo->base.ptr, bo->base.size); |
| 207 | bo->base.ptr = NULL; |
| 208 | } |
| 209 | |
| 210 | memset(&arg, 0, sizeof(arg)); |
| 211 | arg.handle = bo->base.handle; |
| 212 | |
| 213 | ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg); |
| 214 | if (ret) |
| 215 | return -errno; |
| 216 | |
| 217 | free(bo); |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | int |
| 222 | radeon_create(int fd, struct kms_driver **out) |
| 223 | { |
| 224 | struct kms_driver *kms; |
| 225 | |
| 226 | kms = calloc(1, sizeof(*kms)); |
| 227 | if (!kms) |
| 228 | return -ENOMEM; |
| 229 | |
| 230 | kms->fd = fd; |
| 231 | |
| 232 | kms->bo_create = radeon_bo_create; |
| 233 | kms->bo_map = radeon_bo_map; |
| 234 | kms->bo_unmap = radeon_bo_unmap; |
| 235 | kms->bo_get_prop = radeon_bo_get_prop; |
| 236 | kms->bo_destroy = radeon_bo_destroy; |
| 237 | kms->get_prop = radeon_get_prop; |
| 238 | kms->destroy = radeon_destroy; |
| 239 | *out = kms; |
| 240 | |
| 241 | return 0; |
| 242 | } |