| /* |
| * Copyright © 2015 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #define _DEFAULT_SOURCE |
| |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| #include "private.h" |
| |
| #ifdef HAVE_VALGRIND |
| #include <valgrind.h> |
| #include <memcheck.h> |
| #define VG(x) x |
| #else |
| #define VG(x) |
| #endif |
| |
| #define VG_CLEAR(s) VG(memset(&s, 0, sizeof(s))) |
| |
| static int |
| anv_ioctl(int fd, unsigned long request, void *arg) |
| { |
| int ret; |
| |
| do { |
| ret = ioctl(fd, request, arg); |
| } while (ret == -1 && (errno == EINTR || errno == EAGAIN)); |
| |
| return ret; |
| } |
| |
| /** |
| * Wrapper around DRM_IOCTL_I915_GEM_CREATE. |
| * |
| * Return gem handle, or 0 on failure. Gem handles are never 0. |
| */ |
| uint32_t |
| anv_gem_create(struct anv_device *device, size_t size) |
| { |
| struct drm_i915_gem_create gem_create; |
| int ret; |
| |
| VG_CLEAR(gem_create); |
| gem_create.size = size; |
| |
| ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CREATE, &gem_create); |
| if (ret != 0) { |
| /* FIXME: What do we do if this fails? */ |
| return 0; |
| } |
| |
| return gem_create.handle; |
| } |
| |
| void |
| anv_gem_close(struct anv_device *device, int gem_handle) |
| { |
| struct drm_gem_close close; |
| |
| VG_CLEAR(close); |
| close.handle = gem_handle; |
| anv_ioctl(device->fd, DRM_IOCTL_GEM_CLOSE, &close); |
| } |
| |
| /** |
| * Wrapper around DRM_IOCTL_I915_GEM_MMAP. |
| */ |
| void* |
| anv_gem_mmap(struct anv_device *device, uint32_t gem_handle, |
| uint64_t offset, uint64_t size) |
| { |
| struct drm_i915_gem_mmap gem_mmap; |
| int ret; |
| |
| VG_CLEAR(gem_mmap); |
| gem_mmap.handle = gem_handle; |
| gem_mmap.offset = offset; |
| gem_mmap.size = size; |
| ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_MMAP, &gem_mmap); |
| if (ret != 0) { |
| /* FIXME: Is NULL the right error return? Cf MAP_INVALID */ |
| return NULL; |
| } |
| |
| VG(VALGRIND_MALLOCLIKE_BLOCK(gem_mmap.addr_ptr, gem_mmap.size, 0, 1)); |
| return (void *)(uintptr_t) gem_mmap.addr_ptr; |
| } |
| |
| /* This is just a wrapper around munmap, but it also notifies valgrind that |
| * this map is no longer valid. Pair this with anv_gem_mmap(). |
| */ |
| void |
| anv_gem_munmap(void *p, uint64_t size) |
| { |
| munmap(p, size); |
| VG(VALGRIND_FREELIKE_BLOCK(p, 0)); |
| } |
| |
| int |
| anv_gem_userptr(struct anv_device *device, void *mem, size_t size) |
| { |
| struct drm_i915_gem_userptr userptr; |
| int ret; |
| |
| VG_CLEAR(userptr); |
| userptr.user_ptr = (__u64)((unsigned long) mem); |
| userptr.user_size = size; |
| userptr.flags = 0; |
| |
| ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_USERPTR, &userptr); |
| if (ret == -1) |
| return 0; |
| |
| return userptr.handle; |
| } |
| |
| /** |
| * On error, \a timeout_ns holds the remaining time. |
| */ |
| int |
| anv_gem_wait(struct anv_device *device, int gem_handle, int64_t *timeout_ns) |
| { |
| struct drm_i915_gem_wait wait; |
| int ret; |
| |
| VG_CLEAR(wait); |
| wait.bo_handle = gem_handle; |
| wait.timeout_ns = *timeout_ns; |
| wait.flags = 0; |
| |
| ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_WAIT, &wait); |
| *timeout_ns = wait.timeout_ns; |
| if (ret == -1) |
| return -errno; |
| |
| return ret; |
| } |
| |
| int |
| anv_gem_execbuffer(struct anv_device *device, |
| struct drm_i915_gem_execbuffer2 *execbuf) |
| { |
| return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, execbuf); |
| } |
| |
| int |
| anv_gem_set_tiling(struct anv_device *device, |
| int gem_handle, uint32_t stride, uint32_t tiling) |
| { |
| struct drm_i915_gem_set_tiling set_tiling; |
| int ret; |
| |
| /* set_tiling overwrites the input on the error path, so we have to open |
| * code anv_ioctl. |
| */ |
| |
| do { |
| VG_CLEAR(set_tiling); |
| set_tiling.handle = gem_handle; |
| set_tiling.tiling_mode = I915_TILING_X; |
| set_tiling.stride = stride; |
| |
| ret = ioctl(device->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling); |
| } while (ret == -1 && (errno == EINTR || errno == EAGAIN)); |
| |
| return ret; |
| } |
| |
| int |
| anv_gem_get_param(int fd, uint32_t param) |
| { |
| drm_i915_getparam_t gp; |
| int ret, tmp; |
| |
| VG_CLEAR(gp); |
| gp.param = param; |
| gp.value = &tmp; |
| ret = anv_ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp); |
| if (ret == 0) |
| return tmp; |
| |
| return 0; |
| } |
| |
| int |
| anv_gem_create_context(struct anv_device *device) |
| { |
| struct drm_i915_gem_context_create create; |
| int ret; |
| |
| VG_CLEAR(create); |
| |
| ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_CREATE, &create); |
| if (ret == -1) |
| return -1; |
| |
| return create.ctx_id; |
| } |
| |
| int |
| anv_gem_destroy_context(struct anv_device *device, int context) |
| { |
| struct drm_i915_gem_context_destroy destroy; |
| |
| VG_CLEAR(destroy); |
| destroy.ctx_id = context; |
| |
| return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_DESTROY, &destroy); |
| } |
| |
| int |
| anv_gem_get_aperture(struct anv_device *device, uint64_t *size) |
| { |
| struct drm_i915_gem_get_aperture aperture; |
| int ret; |
| |
| VG_CLEAR(aperture); |
| ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture); |
| if (ret == -1) |
| return -1; |
| |
| *size = aperture.aper_available_size; |
| |
| return 0; |
| } |
| |
| int |
| anv_gem_handle_to_fd(struct anv_device *device, int gem_handle) |
| { |
| struct drm_prime_handle args; |
| int ret; |
| |
| VG_CLEAR(args); |
| args.handle = gem_handle; |
| args.flags = DRM_CLOEXEC; |
| |
| ret = anv_ioctl(device->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args); |
| if (ret == -1) |
| return -1; |
| |
| return args.fd; |
| } |
| |
| int |
| anv_gem_fd_to_handle(struct anv_device *device, int fd) |
| { |
| struct drm_prime_handle args; |
| int ret; |
| |
| VG_CLEAR(args); |
| args.fd = fd; |
| |
| ret = anv_ioctl(device->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args); |
| if (ret == -1) |
| return 0; |
| |
| return args.handle; |
| } |