diff options
Diffstat (limited to 'lib/ioctl_wrappers.c')
-rw-r--r-- | lib/ioctl_wrappers.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c index c24f7057..e348f265 100644 --- a/lib/ioctl_wrappers.c +++ b/lib/ioctl_wrappers.c @@ -390,6 +390,78 @@ void gem_sync(int fd, uint32_t handle) I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); } +bool gem_create__has_stolen_support(int fd) +{ + static int has_stolen_support = -1; + struct drm_i915_getparam gp; + int val = -1; + + if (has_stolen_support < 0) { + memset(&gp, 0, sizeof(gp)); + gp.param = 36; /* CREATE_VERSION */ + gp.value = &val; + + /* Do we have the extended gem_create_ioctl? */ + ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp); + has_stolen_support = val >= 2; + } + + return has_stolen_support; +} + +struct local_i915_gem_create_v2 { + uint64_t size; + uint32_t handle; + uint32_t pad; +#define I915_CREATE_PLACEMENT_STOLEN (1<<0) + uint32_t flags; +}; + +#define LOCAL_IOCTL_I915_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_CREATE, struct local_i915_gem_create_v2) +uint32_t __gem_create_stolen(int fd, uint64_t size) +{ + struct local_i915_gem_create_v2 create; + int ret; + + memset(&create, 0, sizeof(create)); + create.handle = 0; + create.size = size; + create.flags = I915_CREATE_PLACEMENT_STOLEN; + ret = drmIoctl(fd, LOCAL_IOCTL_I915_GEM_CREATE, &create); + + if (ret < 0) + return 0; + + errno = 0; + return create.handle; +} + +/** + * gem_create_stolen: + * @fd: open i915 drm file descriptor + * @size: desired size of the buffer + * + * This wraps the new GEM_CREATE ioctl, which allocates a new gem buffer + * object of @size and placement in stolen memory region. + * + * Returns: The file-private handle of the created buffer object + */ + +uint32_t gem_create_stolen(int fd, uint64_t size) +{ + struct local_i915_gem_create_v2 create; + + memset(&create, 0, sizeof(create)); + create.handle = 0; + create.size = size; + create.flags = I915_CREATE_PLACEMENT_STOLEN; + do_ioctl(fd, LOCAL_IOCTL_I915_GEM_CREATE, &create); + igt_assert(create.handle); + + return create.handle; +} + + uint32_t __gem_create(int fd, int size) { struct drm_i915_gem_create create; |