1 /* $NetBSD: ttm_page_alloc.h,v 1.3 2021/12/19 09:58:07 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Taylor R. Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _DRM_TTM_TTM_PAGE_ALLOC_H_ 33 #define _DRM_TTM_TTM_PAGE_ALLOC_H_ 34 35 #include <drm/ttm/ttm_bo_driver.h> 36 37 struct ttm_dma_tt; 38 struct ttm_mem_global; 39 40 int ttm_bus_dma_populate(struct ttm_dma_tt *); 41 void ttm_bus_dma_unpopulate(struct ttm_dma_tt *); 42 void ttm_bus_dma_swapout(struct ttm_dma_tt *); 43 44 static inline int 45 ttm_page_alloc_init(struct ttm_mem_global *glob __unused, 46 unsigned max_pages __unused) 47 { 48 return 0; 49 } 50 51 static inline void 52 ttm_page_alloc_fini(void) 53 { 54 } 55 56 static inline int 57 ttm_dma_page_alloc_init(struct ttm_mem_global *glob __unused, 58 unsigned max_pages __unused) 59 { 60 return 0; 61 } 62 63 static inline void 64 ttm_dma_page_alloc_fini(void) 65 { 66 } 67 68 #endif /* _DRM_TTM_TTM_PAGE_ALLOC_H_ */ 69