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 #ifdef HAVE_CONFIG_H 30 #include "config.h" 31 #endif 32 33 #include <errno.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include "internal.h" 38 39 #include <sys/ioctl.h> 40 #include "xf86drm.h" 41 #include "libdrm_macros.h" 42 43 #include "i915_drm.h" 44 45 struct intel_bo 46 { 47 struct kms_bo base; 48 unsigned map_count; 49 }; 50 51 static int 52 intel_get_prop(struct kms_driver *kms, unsigned key, unsigned *out) 53 { 54 switch (key) { 55 case KMS_BO_TYPE: 56 *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8; 57 break; 58 default: 59 return -EINVAL; 60 } 61 return 0; 62 } 63 64 static int 65 intel_destroy(struct kms_driver *kms) 66 { 67 free(kms); 68 return 0; 69 } 70 71 static int 72 intel_bo_create(struct kms_driver *kms, 73 const unsigned width, const unsigned height, 74 const enum kms_bo_type type, const unsigned *attr, 75 struct kms_bo **out) 76 { 77 struct drm_i915_gem_create arg; 78 unsigned size, pitch; 79 struct intel_bo *bo; 80 int i, ret; 81 82 for (i = 0; attr[i]; i += 2) { 83 switch (attr[i]) { 84 case KMS_WIDTH: 85 case KMS_HEIGHT: 86 case KMS_BO_TYPE: 87 break; 88 default: 89 return -EINVAL; 90 } 91 } 92 93 bo = calloc(1, sizeof(*bo)); 94 if (!bo) 95 return -ENOMEM; 96 97 if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) { 98 pitch = 64 * 4; 99 size = 64 * 64 * 4; 100 } else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) { 101 pitch = width * 4; 102 pitch = (pitch + 512 - 1) & ~(512 - 1); 103 size = pitch * ((height + 4 - 1) & ~(4 - 1)); 104 } else { 105 free(bo); 106 return -EINVAL; 107 } 108 109 memset(&arg, 0, sizeof(arg)); 110 arg.size = size; 111 112 ret = drmCommandWriteRead(kms->fd, DRM_I915_GEM_CREATE, &arg, sizeof(arg)); 113 if (ret) 114 goto err_free; 115 116 bo->base.kms = kms; 117 bo->base.handle = arg.handle; 118 bo->base.size = size; 119 bo->base.pitch = pitch; 120 121 *out = &bo->base; 122 if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8 && pitch > 512) { 123 struct drm_i915_gem_set_tiling tile; 124 125 memset(&tile, 0, sizeof(tile)); 126 tile.handle = bo->base.handle; 127 tile.tiling_mode = I915_TILING_X; 128 tile.stride = bo->base.pitch; 129 130 ret = drmCommandWriteRead(kms->fd, DRM_I915_GEM_SET_TILING, &tile, sizeof(tile)); 131 #if 0 132 if (ret) { 133 kms_bo_destroy(out); 134 return ret; 135 } 136 #endif 137 } 138 139 return 0; 140 141 err_free: 142 free(bo); 143 return ret; 144 } 145 146 static int 147 intel_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out) 148 { 149 switch (key) { 150 default: 151 return -EINVAL; 152 } 153 } 154 155 static int 156 intel_bo_map(struct kms_bo *_bo, void **out) 157 { 158 struct intel_bo *bo = (struct intel_bo *)_bo; 159 struct drm_i915_gem_mmap_gtt arg; 160 void *map = NULL; 161 int ret; 162 163 if (bo->base.ptr) { 164 bo->map_count++; 165 *out = bo->base.ptr; 166 return 0; 167 } 168 169 memset(&arg, 0, sizeof(arg)); 170 arg.handle = bo->base.handle; 171 172 ret = drmCommandWriteRead(bo->base.kms->fd, DRM_I915_GEM_MMAP_GTT, &arg, sizeof(arg)); 173 if (ret) 174 return ret; 175 176 map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset); 177 if (map == MAP_FAILED) 178 return -errno; 179 180 bo->base.ptr = map; 181 bo->map_count++; 182 *out = bo->base.ptr; 183 184 return 0; 185 } 186 187 static int 188 intel_bo_unmap(struct kms_bo *_bo) 189 { 190 struct intel_bo *bo = (struct intel_bo *)_bo; 191 bo->map_count--; 192 return 0; 193 } 194 195 static int 196 intel_bo_destroy(struct kms_bo *_bo) 197 { 198 struct intel_bo *bo = (struct intel_bo *)_bo; 199 struct drm_gem_close arg; 200 int ret; 201 202 if (bo->base.ptr) { 203 /* XXX Sanity check map_count */ 204 drm_munmap(bo->base.ptr, bo->base.size); 205 bo->base.ptr = NULL; 206 } 207 208 memset(&arg, 0, sizeof(arg)); 209 arg.handle = bo->base.handle; 210 211 ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg); 212 if (ret) 213 return -errno; 214 215 free(bo); 216 return 0; 217 } 218 219 drm_private int 220 intel_create(int fd, struct kms_driver **out) 221 { 222 struct kms_driver *kms; 223 224 kms = calloc(1, sizeof(*kms)); 225 if (!kms) 226 return -ENOMEM; 227 228 kms->fd = fd; 229 230 kms->bo_create = intel_bo_create; 231 kms->bo_map = intel_bo_map; 232 kms->bo_unmap = intel_bo_unmap; 233 kms->bo_get_prop = intel_bo_get_prop; 234 kms->bo_destroy = intel_bo_destroy; 235 kms->get_prop = intel_get_prop; 236 kms->destroy = intel_destroy; 237 *out = kms; 238 239 return 0; 240 } 241
