diff options
Diffstat (limited to 'src/freedreno/vulkan/tu_drm.c')
| -rw-r--r-- | src/freedreno/vulkan/tu_drm.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/freedreno/vulkan/tu_drm.c b/src/freedreno/vulkan/tu_drm.c index c103561ef1a..6904b011e71 100644 --- a/src/freedreno/vulkan/tu_drm.c +++ b/src/freedreno/vulkan/tu_drm.c @@ -25,6 +25,7 @@ #include "tu_private.h" #include <errno.h> +#include <fcntl.h> #include <stdint.h> #include <sys/ioctl.h> #include <xf86drm.h> @@ -123,6 +124,34 @@ tu_gem_new(const struct tu_device *dev, uint64_t size, uint32_t flags) return req.handle; } +uint32_t +tu_gem_import_dmabuf(const struct tu_device *dev, int prime_fd, uint64_t size) +{ + /* lseek() to get the real size */ + off_t real_size = lseek(prime_fd, 0, SEEK_END); + lseek(prime_fd, 0, SEEK_SET); + if (real_size < 0 || (uint64_t) real_size < size) + return 0; + + uint32_t gem_handle; + int ret = drmPrimeFDToHandle(dev->physical_device->local_fd, prime_fd, + &gem_handle); + if (ret) + return 0; + + return gem_handle; +} + +int +tu_gem_export_dmabuf(const struct tu_device *dev, uint32_t gem_handle) +{ + int prime_fd; + int ret = drmPrimeHandleToFD(dev->physical_device->local_fd, gem_handle, + DRM_CLOEXEC, &prime_fd); + + return ret == 0 ? prime_fd : -1; +} + void tu_gem_close(const struct tu_device *dev, uint32_t gem_handle) { |