diff options
Diffstat (limited to 'libdrm/xf86drm.c')
-rw-r--r-- | libdrm/xf86drm.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c index a2a2e28c..e666df3c 100644 --- a/libdrm/xf86drm.c +++ b/libdrm/xf86drm.c @@ -2362,4 +2362,100 @@ int drmFenceWait(int fd, drmFence *fence, unsigned flush_type, return 0; } +static unsigned long combine64(unsigned lo, unsigned hi) +{ + unsigned long ret = lo; + if (sizeof(ret) == 8) { + int shift = 32; + ret |= (hi << shift); + } + return ret; +} + +static void split32(unsigned long val, unsigned *lo, unsigned *hi) +{ + *lo = val & 0xFFFFFFFFUL; + if (sizeof(val) == 8) { + int shift = 32; + *hi = val >> shift; + } else { + *hi = 0; + } +} + +int drmTTMCreate(int fd, drmTTM *ttm, unsigned long size, unsigned flags) +{ + drm_ttm_arg_t argTTM; + drm_bo_arg_t arg; + + arg.num_requests = 1; + arg.op = drm_op_ttm; + split32((unsigned long) &argTTM, &arg.data_lo, &arg.data_hi); + + argTTM.op = drm_ttm_create; + argTTM.flags = flags; + split32((unsigned long) &size, &argTTM.size_lo, &argTTM.size_hi); + + if (ioctl(fd, DRM_IOCTL_TTM, &arg)) + return -errno; + + ttm->handle = argTTM.handle; + ttm->user_token = (drm_handle_t) argTTM.user_token; + ttm->flags = argTTM.flags; + ttm->size = combine64(argTTM.size_lo, argTTM.size_hi); + return 0; +} + +int drmTTMDestroy(int fd, const drmTTM *ttm) +{ + drm_ttm_arg_t argTTM; + drm_bo_arg_t arg; + arg.num_requests = 1; + arg.op = drm_op_ttm; + split32((unsigned long) &argTTM, &arg.data_lo, &arg.data_hi); + argTTM.op = drm_ttm_destroy; + argTTM.handle = ttm->handle; + if (ioctl(fd, DRM_IOCTL_TTM, &arg)) + return -errno; + return 0; +} + + +int drmTTMReference(int fd, unsigned handle, drmTTM *ttm) +{ + drm_ttm_arg_t argTTM; + drm_bo_arg_t arg; + + arg.num_requests = 1; + arg.op = drm_op_ttm; + split32((unsigned long) &argTTM, &arg.data_lo, &arg.data_hi); + + argTTM.handle = handle; + argTTM.op = drm_ttm_reference; + if (ioctl(fd, DRM_IOCTL_TTM, &arg)) + return -errno; + ttm->handle = argTTM.handle; + ttm->user_token = (drm_handle_t) argTTM.user_token; + ttm->flags = argTTM.flags; + ttm->size = combine64(argTTM.size_lo, argTTM.size_hi); + return 0; +} + +int drmTTMUnreference(int fd, const drmTTM *ttm) +{ + drm_ttm_arg_t argTTM; + drm_bo_arg_t arg; + + argTTM.op = drm_ttm_destroy; + argTTM.handle = ttm->handle; + if (ioctl(fd, DRM_IOCTL_TTM, &arg)) + return -errno; + return 0; +} + +drm_handle_t drmTTMMapHandle(int fd, const drmTTM *ttm) +{ + (void) fd; + return ttm->user_token; +} |