diff options
| author | Eric Anholt <eric@anholt.net> | 2016-01-25 10:01:35 -0800 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2016-02-08 16:34:13 -0800 |
| commit | b8badc243630e88f243b66c20599cfd035286382 (patch) | |
| tree | beb38becc769c1cfc03a103fc9169b7075fbc16c | |
| parent | 4880e13d04c005c1d7918b4499be45704dea9aca (diff) | |
igt: Add a helper function for mapping VC4 BOs.
v2: Use do_ioctl().
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>
| -rw-r--r-- | lib/igt_vc4.c | 18 | ||||
| -rw-r--r-- | lib/igt_vc4.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/lib/igt_vc4.c b/lib/igt_vc4.c index 9b8f80557..8d00764ad 100644 --- a/lib/igt_vc4.c +++ b/lib/igt_vc4.c @@ -25,6 +25,7 @@ #include <string.h> #include <signal.h> #include <errno.h> +#include <sys/mman.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/ioctl.h> @@ -101,3 +102,20 @@ uint32_t igt_vc4_get_cleared_bo(int fd, size_t size, uint32_t clearval) return create.handle; } + +void * +igt_vc4_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot) +{ + struct drm_vc4_mmap_bo mmap_bo = { + .handle = handle, + }; + void *ptr; + + do_ioctl(fd, DRM_IOCTL_VC4_MMAP_BO, &mmap_bo); + + ptr = mmap(0, size, prot, MAP_SHARED, fd, mmap_bo.offset); + if (ptr == MAP_FAILED) + return NULL; + else + return ptr; +} diff --git a/lib/igt_vc4.h b/lib/igt_vc4.h index 46220345a..d428f391e 100644 --- a/lib/igt_vc4.h +++ b/lib/igt_vc4.h @@ -25,5 +25,6 @@ #define IGT_VC4_H uint32_t igt_vc4_get_cleared_bo(int fd, size_t size, uint32_t clearval); +void *igt_vc4_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot); #endif /* IGT_VC4_H */ |