src/intel/vulkan/anv_gem.c

   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       /* FIXME: Is NULL the right error return? Cf MAP_INVALID */
  93       return NULL;
  94    }
  95
  96    VG(VALGRIND_MALLOCLIKE_BLOCK(gem_mmap.addr_ptr, gem_mmap.size, 0, 1));
  97    return (void *)(uintptr_t) gem_mmap.addr_ptr;
  98 }
  99
 100 /* This is just a wrapper around munmap, but it also notifies valgrind that
 101  * this map is no longer valid.  Pair this with anv_gem_mmap().
 102  */
 103 void
 104 anv_gem_munmap(void *p, uint64_t size)
 105 {
 106    VG(VALGRIND_FREELIKE_BLOCK(p, 0));
 107    munmap(p, size);
 108 }
 109
 110 uint32_t
 111 anv_gem_userptr(struct anv_device *device, void *mem, size_t size)
 112 {
 113    struct drm_i915_gem_userptr userptr = {
 114       .user_ptr = (__u64)((unsigned long) mem),
 115       .user_size = size,
 116       .flags = 0,
 117    };
 118
 119    int ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_USERPTR, &userptr);
 120    if (ret == -1)
 121       return 0;
 122
 123    return userptr.handle;
 124 }
 125
 126 int
 127 anv_gem_set_caching(struct anv_device *device,
 128                     uint32_t gem_handle, uint32_t caching)
 129 {
 130    struct drm_i915_gem_caching gem_caching = {
 131       .handle = gem_handle,
 132       .caching = caching,
 133    };
 134
 135    return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_SET_CACHING, &gem_caching);
 136 }
 137
 138 int
 139 anv_gem_set_domain(struct anv_device *device, uint32_t gem_handle,
 140                    uint32_t read_domains, uint32_t write_domain)
 141 {
 142    struct drm_i915_gem_set_domain gem_set_domain = {
 143       .handle = gem_handle,
 144       .read_domains = read_domains,
 145       .write_domain = write_domain,
 146    };
 147
 148    return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &gem_set_domain);
 149 }
 150
 151 /**
 152  * On error, \a timeout_ns holds the remaining time.
 153  */
 154 int
 155 anv_gem_wait(struct anv_device *device, uint32_t gem_handle, int64_t *timeout_ns)
 156 {
 157    struct drm_i915_gem_wait wait = {
 158       .bo_handle = gem_handle,
 159       .timeout_ns = *timeout_ns,
 160       .flags = 0,
 161    };
 162
 163    int ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_WAIT, &wait);
 164    *timeout_ns = wait.timeout_ns;
 165
 166    return ret;
 167 }
 168
 169 int
 170 anv_gem_execbuffer(struct anv_device *device,
 171                    struct drm_i915_gem_execbuffer2 *execbuf)
 172 {
 173    return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, execbuf);
 174 }
 175
 176 int
 177 anv_gem_set_tiling(struct anv_device *device,
 178                    uint32_t gem_handle, uint32_t stride, uint32_t tiling)
 179 {
 180    int ret;
 181
 182    /* set_tiling overwrites the input on the error path, so we have to open
 183     * code anv_ioctl.
 184     */
 185    do {
 186       struct drm_i915_gem_set_tiling set_tiling = {
 187          .handle = gem_handle,
 188          .tiling_mode = tiling,
 189          .stride = stride,
 190       };
 191
 192       ret = ioctl(device->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
 193    } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
 194
 195    return ret;
 196 }
 197
 198 int
 199 anv_gem_get_param(int fd, uint32_t param)
 200 {
 201    int tmp;
 202
 203    drm_i915_getparam_t gp = {
 204       .param = param,
 205       .value = &tmp,
 206    };
 207
 208    int ret = anv_ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp);
 209    if (ret == 0)
 210       return tmp;
 211
 212    return 0;
 213 }
 214
 215 bool
 216 anv_gem_get_bit6_swizzle(int fd, uint32_t tiling)
 217 {
 218    struct drm_gem_close close;
 219    int ret;
 220
 221    struct drm_i915_gem_create gem_create = {
 222       .size = 4096,
 223    };
 224
 225    if (anv_ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &gem_create)) {
 226       assert(!"Failed to create GEM BO");
 227       return false;
 228    }
 229
 230    bool swizzled = false;
 231
 232    /* set_tiling overwrites the input on the error path, so we have to open
 233     * code anv_ioctl.
 234     */
 235    do {
 236       struct drm_i915_gem_set_tiling set_tiling = {
 237          .handle = gem_create.handle,
 238          .tiling_mode = tiling,
 239          .stride = tiling == I915_TILING_X ? 512 : 128,
 240       };
 241
 242       ret = ioctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
 243    } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
 244
 245    if (ret != 0) {
 246       assert(!"Failed to set BO tiling");
 247       goto close_and_return;
 248    }
 249
 250    struct drm_i915_gem_get_tiling get_tiling = {
 251       .handle = gem_create.handle,
 252    };
 253
 254    if (anv_ioctl(fd, DRM_IOCTL_I915_GEM_GET_TILING, &get_tiling)) {
 255       assert(!"Failed to get BO tiling");
 256       goto close_and_return;
 257    }
 258
 259    swizzled = get_tiling.swizzle_mode != I915_BIT_6_SWIZZLE_NONE;
 260
 261 close_and_return:
 262
 263    memset(&close, 0, sizeof(close));
 264    close.handle = gem_create.handle;
 265    anv_ioctl(fd, DRM_IOCTL_GEM_CLOSE, &close);
 266
 267    return swizzled;
 268 }
 269
 270 int
 271 anv_gem_create_context(struct anv_device *device)
 272 {
 273    struct drm_i915_gem_context_create create = { 0 };
 274
 275    int ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_CREATE, &create);
 276    if (ret == -1)
 277       return -1;
 278
 279    return create.ctx_id;
 280 }
 281
 282 int
 283 anv_gem_destroy_context(struct anv_device *device, int context)
 284 {
 285    struct drm_i915_gem_context_destroy destroy = {
 286       .ctx_id = context,
 287    };
 288
 289    return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_DESTROY, &destroy);
 290 }
 291
 292 int
 293 anv_gem_get_aperture(int fd, uint64_t *size)
 294 {
 295    struct drm_i915_gem_get_aperture aperture = { 0 };
 296
 297    int ret = anv_ioctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
 298    if (ret == -1)
 299       return -1;
 300
 301    *size = aperture.aper_available_size;
 302
 303    return 0;
 304 }
 305
 306 int
 307 anv_gem_handle_to_fd(struct anv_device *device, uint32_t gem_handle)
 308 {
 309    struct drm_prime_handle args = {
 310       .handle = gem_handle,
 311       .flags = DRM_CLOEXEC,
 312    };
 313
 314    int ret = anv_ioctl(device->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
 315    if (ret == -1)
 316       return -1;
 317
 318    return args.fd;
 319 }
 320
 321 uint32_t
 322 anv_gem_fd_to_handle(struct anv_device *device, int fd)
 323 {
 324    struct drm_prime_handle args = {
 325       .fd = fd,
 326    };
 327
 328    int ret = anv_ioctl(device->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args);
 329    if (ret == -1)
 330       return 0;
 331
 332    return args.handle;
 333 }