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      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