39     struct rbo *bo;  in rbo()  local
42     bo = calloc(1, sizeof(*bo));  in rbo()
43     if (bo == NULL) {  in rbo()
46     list_inithead(&bo->list);  in rbo()
47     bo->fd = fd;  in rbo()
48     bo->size = size;  in rbo()
49     bo->handle = handle;  in rbo()
50     bo->refcount = 1;  in rbo()
51     bo->alignment = alignment;  in rbo()
60             free(bo);  in rbo()
63         bo->handle = open_arg.handle;  in rbo()
74         bo->handle = args.handle;  in rbo()
79             free(bo);  in rbo()
84         if (rbo_map(bo)) {  in rbo()
86             return rbo_decref(bo);  in rbo()
88         memcpy(bo->data, ptr, size);  in rbo()
89         rbo_unmap(bo);  in rbo()
91     return bo;  in rbo()
94 int rbo_map(struct rbo *bo)  in rbo_map()  argument
100     if (bo->mapcount++ != 0) {  in rbo_map()
105     args.handle = bo->handle;  in rbo_map()
107     args.size = (uint64_t)bo->size;  in rbo_map()
108     r = drmCommandWriteRead(bo->fd, DRM_RADEON_GEM_MMAP,  in rbo_map()
112             bo, bo->handle, r);  in rbo_map()
115     ptr = mmap(0, args.size, PROT_READ|PROT_WRITE, MAP_SHARED, bo->fd, args.addr_ptr);  in rbo_map()
120     bo->data = ptr;  in rbo_map()
124 void rbo_unmap(struct rbo *bo)  in rbo_unmap()  argument
126     if (--bo->mapcount > 0) {  in rbo_unmap()
129     munmap(bo->data, bo->size);  in rbo_unmap()
130     bo->data = NULL;  in rbo_unmap()
133 struct rbo *rbo_incref(struct rbo *bo)  in rbo_incref()  argument
135     bo->refcount++;  in rbo_incref()
136     return bo;  in rbo_incref()
139 struct rbo *rbo_decref(struct rbo *bo)  in rbo_decref()  argument
143     if (bo == NULL)  in rbo_decref()
145     if (--bo->refcount > 0) {  in rbo_decref()
149     munmap(bo->data, bo->size);  in rbo_decref()
151     args.handle = bo->handle;  in rbo_decref()
152     drmIoctl(bo->fd, DRM_IOCTL_GEM_CLOSE, &args);  in rbo_decref()
153     memset(bo, 0, sizeof(struct rbo));  in rbo_decref()
154     free(bo);  in rbo_decref()
158 int rbo_wait(struct rbo *bo)  in rbo_wait()  argument
165     args.handle = bo->handle;  in rbo_wait()
167         ret = drmCommandWriteRead(bo->fd, DRM_RADEON_GEM_WAIT_IDLE,  in rbo_wait()