44 int drm_buffer_alloc(struct drm_buffer **buf, int size)  in drm_buffer_alloc()  argument
51 	*buf = kzalloc(sizeof(struct drm_buffer) + nr_pages*sizeof(char *),  in drm_buffer_alloc()
54 	if (*buf == NULL) {  in drm_buffer_alloc()
61 	(*buf)->size = size;  in drm_buffer_alloc()
65 		(*buf)->data[idx] =  in drm_buffer_alloc()
70 		if ((*buf)->data[idx] == NULL) {  in drm_buffer_alloc()
84 		kfree((*buf)->data[idx]);  in drm_buffer_alloc()
86 	kfree(*buf);  in drm_buffer_alloc()
97 int drm_buffer_copy_from_user(struct drm_buffer *buf,  in drm_buffer_copy_from_user()  argument
103 	if (size > buf->size) {  in drm_buffer_copy_from_user()
106 				size, buf->size);  in drm_buffer_copy_from_user()
112 		if (copy_from_user(buf->data[idx],  in drm_buffer_copy_from_user()
117 					user_data, buf, idx);  in drm_buffer_copy_from_user()
122 	buf->iterator = 0;  in drm_buffer_copy_from_user()
129 void drm_buffer_free(struct drm_buffer *buf)  in drm_buffer_free()  argument
132 	if (buf != NULL) {  in drm_buffer_free()
134 		int nr_pages = buf->size / PAGE_SIZE + 1;  in drm_buffer_free()
137 			kfree(buf->data[idx]);  in drm_buffer_free()
139 		kfree(buf);  in drm_buffer_free()
155 void *drm_buffer_read_object(struct drm_buffer *buf,  in drm_buffer_read_object()  argument
158 	int idx = drm_buffer_index(buf);  in drm_buffer_read_object()
159 	int page = drm_buffer_page(buf);  in drm_buffer_read_object()
163 		obj = &buf->data[page][idx];  in drm_buffer_read_object()
167 		memcpy(stack_obj, &buf->data[page][idx], beginsz);  in drm_buffer_read_object()
169 		memcpy(stack_obj + beginsz, &buf->data[page + 1][0],  in drm_buffer_read_object()
175 	drm_buffer_advance(buf, objsize);  in drm_buffer_read_object()