1 /* 2 * Copyright 2015 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #include <sys/ioctl.h> 25 #include <sys/mman.h> 26 #include <string.h> 27 #include <errno.h> 28 #include <unistd.h> 29 #include <fcntl.h> 30 31 #include "anv_private.h" 32 33 static int 34 anv_ioctl(int fd, unsigned long request, void *arg) 35 { 36 int ret; 37 38 do { 39 ret = ioctl(fd, request, arg); 40 } while (ret == -1 && (errno == EINTR || errno == EAGAIN)); 41 42 return ret; 43 } 44 45 /** 46 * Wrapper around DRM_IOCTL_I915_GEM_CREATE. 47 * 48 * Return gem handle, or 0 on failure. Gem handles are never 0. 49 */ 50 uint32_t 51 anv_gem_create(struct anv_device *device, size_t size) 52 { 53 struct drm_i915_gem_create gem_create = { 54 .size = size, 55 }; 56 57 int ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CREATE, &gem_create); 58 if (ret != 0) { 59 /* FIXME: What do we do if this fails? */ 60 return 0; 61 } 62 63 return gem_create.handle; 64 } 65 66 void 67 anv_gem_close(struct anv_device *device, uint32_t gem_handle) 68 { 69 struct drm_gem_close close = { 70 .handle = gem_handle, 71 }; 72 73 anv_ioctl(device->fd, DRM_IOCTL_GEM_CLOSE, &close); 74 } 75 76 /** 77 * Wrapper around DRM_IOCTL_I915_GEM_MMAP. 78 */ 79 void* 80 anv_gem_mmap(struct anv_device *device, uint32_t gem_handle, 81 uint64_t offset, uint64_t size, uint32_t flags) 82 { 83 struct drm_i915_gem_mmap gem_mmap = { 84 .handle = gem_handle, 85 .offset = offset, 86 .size = size, 87 .flags = flags, 88 }; 89 90 int ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_MMAP, &gem_mmap); 91 if (ret != 0) 92 return MAP_FAILED; 93 94 VG(VALGRIND_MALLOCLIKE_BLOCK(gem_mmap.addr_ptr, gem_mmap.size, 0, 1)); 95 return (void *)(uintptr_t) gem_mmap.addr_ptr; 96 } 97 98 /* This is just a wrapper around munmap, but it also notifies valgrind that 99 * this map is no longer valid. Pair this with anv_gem_mmap(). 100 */ 101 void 102 anv_gem_munmap(void *p, uint64_t size) 103 { 104 VG(VALGRIND_FREELIKE_BLOCK(p, 0)); 105 munmap(p, size); 106 } 107 108 uint32_t 109 anv_gem_userptr(struct anv_device *device, void *mem, size_t size) 110 { 111 struct drm_i915_gem_userptr userptr = { 112 .user_ptr = (__u64)((unsigned long) mem), 113 .user_size = size, 114 .flags = 0, 115 }; 116 117 int ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_USERPTR, &userptr); 118 if (ret == -1) 119 return 0; 120 121 return userptr.handle; 122 } 123 124 int 125 anv_gem_set_caching(struct anv_device *device, 126 uint32_t gem_handle, uint32_t caching) 127 { 128 struct drm_i915_gem_caching gem_caching = { 129 .handle = gem_handle, 130 .caching = caching, 131 }; 132 133 return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_SET_CACHING, &gem_caching); 134 } 135 136 int 137 anv_gem_set_domain(struct anv_device *device, uint32_t gem_handle, 138 uint32_t read_domains, uint32_t write_domain) 139 { 140 struct drm_i915_gem_set_domain gem_set_domain = { 141 .handle = gem_handle, 142 .read_domains = read_domains, 143 .write_domain = write_domain, 144 }; 145 146 return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &gem_set_domain); 147 } 148 149 /** 150 * On error, \a timeout_ns holds the remaining time. 151 */ 152 int 153 anv_gem_wait(struct anv_device *device, uint32_t gem_handle, int64_t *timeout_ns) 154 { 155 struct drm_i915_gem_wait wait = { 156 .bo_handle = gem_handle, 157 .timeout_ns = *timeout_ns, 158 .flags = 0, 159 }; 160 161 int ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_WAIT, &wait); 162 *timeout_ns = wait.timeout_ns; 163 164 return ret; 165 } 166 167 int 168 anv_gem_execbuffer(struct anv_device *device, 169 struct drm_i915_gem_execbuffer2 *execbuf) 170 { 171 return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, execbuf); 172 } 173 174 int 175 anv_gem_set_tiling(struct anv_device *device, 176 uint32_t gem_handle, uint32_t stride, uint32_t tiling) 177 { 178 int ret; 179 180 /* set_tiling overwrites the input on the error path, so we have to open 181 * code anv_ioctl. 182 */ 183 do { 184 struct drm_i915_gem_set_tiling set_tiling = { 185 .handle = gem_handle, 186 .tiling_mode = tiling, 187 .stride = stride, 188 }; 189 190 ret = ioctl(device->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling); 191 } while (ret == -1 && (errno == EINTR || errno == EAGAIN)); 192 193 return ret; 194 } 195 196 int 197 anv_gem_get_param(int fd, uint32_t param) 198 { 199 int tmp; 200 201 drm_i915_getparam_t gp = { 202 .param = param, 203 .value = &tmp, 204 }; 205 206 int ret = anv_ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp); 207 if (ret == 0) 208 return tmp; 209 210 return 0; 211 } 212 213 bool 214 anv_gem_get_bit6_swizzle(int fd, uint32_t tiling) 215 { 216 struct drm_gem_close close; 217 int ret; 218 219 struct drm_i915_gem_create gem_create = { 220 .size = 4096, 221 }; 222 223 if (anv_ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &gem_create)) { 224 assert(!"Failed to create GEM BO"); 225 return false; 226 } 227 228 bool swizzled = false; 229 230 /* set_tiling overwrites the input on the error path, so we have to open 231 * code anv_ioctl. 232 */ 233 do { 234 struct drm_i915_gem_set_tiling set_tiling = { 235 .handle = gem_create.handle, 236 .tiling_mode = tiling, 237 .stride = tiling == I915_TILING_X ? 512 : 128, 238 }; 239 240 ret = ioctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling); 241 } while (ret == -1 && (errno == EINTR || errno == EAGAIN)); 242 243 if (ret != 0) { 244 assert(!"Failed to set BO tiling"); 245 goto close_and_return; 246 } 247 248 struct drm_i915_gem_get_tiling get_tiling = { 249 .handle = gem_create.handle, 250 }; 251 252 if (anv_ioctl(fd, DRM_IOCTL_I915_GEM_GET_TILING, &get_tiling)) { 253 assert(!"Failed to get BO tiling"); 254 goto close_and_return; 255 } 256 257 swizzled = get_tiling.swizzle_mode != I915_BIT_6_SWIZZLE_NONE; 258 259 close_and_return: 260 261 memset(&close, 0, sizeof(close)); 262 close.handle = gem_create.handle; 263 anv_ioctl(fd, DRM_IOCTL_GEM_CLOSE, &close); 264 265 return swizzled; 266 } 267 268 int 269 anv_gem_create_context(struct anv_device *device) 270 { 271 struct drm_i915_gem_context_create create = { 0 }; 272 273 int ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_CREATE, &create); 274 if (ret == -1) 275 return -1; 276 277 return create.ctx_id; 278 } 279 280 int 281 anv_gem_destroy_context(struct anv_device *device, int context) 282 { 283 struct drm_i915_gem_context_destroy destroy = { 284 .ctx_id = context, 285 }; 286 287 return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_DESTROY, &destroy); 288 } 289 290 int 291 anv_gem_get_aperture(int fd, uint64_t *size) 292 { 293 struct drm_i915_gem_get_aperture aperture = { 0 }; 294 295 int ret = anv_ioctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture); 296 if (ret == -1) 297 return -1; 298 299 *size = aperture.aper_available_size; 300 301 return 0; 302 } 303 304 int 305 anv_gem_handle_to_fd(struct anv_device *device, uint32_t gem_handle) 306 { 307 struct drm_prime_handle args = { 308 .handle = gem_handle, 309 .flags = DRM_CLOEXEC, 310 }; 311 312 int ret = anv_ioctl(device->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args); 313 if (ret == -1) 314 return -1; 315 316 return args.fd; 317 } 318 319 uint32_t 320 anv_gem_fd_to_handle(struct anv_device *device, int fd) 321 { 322 struct drm_prime_handle args = { 323 .fd = fd, 324 }; 325 326 int ret = anv_ioctl(device->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args); 327 if (ret == -1) 328 return 0; 329 330 return args.handle; 331 } 332