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      1 /*	$NetBSD: ttm_set_memory.h,v 1.4 2021/12/19 12:40:44 riastradh Exp $	*/
      2 
      3 /**************************************************************************
      4  *
      5  * Copyright (c) 2018 Advanced Micro Devices, Inc.
      6  * All Rights Reserved.
      7  *
      8  * Permission is hereby granted, free of charge, to any person obtaining a
      9  * copy of this software and associated documentation files (the
     10  * "Software"), to deal in the Software without restriction, including
     11  * without limitation the rights to use, copy, modify, merge, publish,
     12  * distribute, sub license, and/or sell copies of the Software, and to
     13  * permit persons to whom the Software is furnished to do so, subject to
     14  * the following conditions:
     15  *
     16  * The above copyright notice and this permission notice (including the
     17  * next paragraph) shall be included in all copies or substantial portions
     18  * of the Software.
     19  *
     20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     22  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     23  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
     24  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     25  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     26  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     27  *
     28  **************************************************************************/
     29 /*
     30  * Authors: Huang Rui <ray.huang (at) amd.com>
     31  */
     32 
     33 #ifndef TTM_SET_MEMORY
     34 #define TTM_SET_MEMORY
     35 
     36 #include <linux/mm.h>
     37 
     38 #if defined(CONFIG_X86) && !defined(__NetBSD__)
     39 
     40 #include <asm/set_memory.h>
     41 
     42 static inline int ttm_set_pages_array_wb(struct page **pages, int addrinarray)
     43 {
     44 	return set_pages_array_wb(pages, addrinarray);
     45 }
     46 
     47 static inline int ttm_set_pages_array_wc(struct page **pages, int addrinarray)
     48 {
     49 	return set_pages_array_wc(pages, addrinarray);
     50 }
     51 
     52 static inline int ttm_set_pages_array_uc(struct page **pages, int addrinarray)
     53 {
     54 	return set_pages_array_uc(pages, addrinarray);
     55 }
     56 
     57 static inline int ttm_set_pages_wb(struct page *page, int numpages)
     58 {
     59 	return set_pages_wb(page, numpages);
     60 }
     61 
     62 static inline int ttm_set_pages_wc(struct page *page, int numpages)
     63 {
     64 	unsigned long addr = (unsigned long)page_address(page);
     65 
     66 	return set_memory_wc(addr, numpages);
     67 }
     68 
     69 static inline int ttm_set_pages_uc(struct page *page, int numpages)
     70 {
     71 	return set_pages_uc(page, numpages);
     72 }
     73 
     74 #else /* for CONFIG_X86 */
     75 
     76 #if IS_ENABLED(CONFIG_AGP)
     77 
     78 #include <asm/agp.h>
     79 
     80 static inline int ttm_set_pages_array_wb(struct page **pages, int addrinarray)
     81 {
     82 	int i;
     83 
     84 	for (i = 0; i < addrinarray; i++)
     85 		unmap_page_from_agp(pages[i]);
     86 	return 0;
     87 }
     88 
     89 static inline int ttm_set_pages_array_wc(struct page **pages, int addrinarray)
     90 {
     91 	int i;
     92 
     93 	for (i = 0; i < addrinarray; i++)
     94 		map_page_into_agp(pages[i]);
     95 	return 0;
     96 }
     97 
     98 static inline int ttm_set_pages_array_uc(struct page **pages, int addrinarray)
     99 {
    100 	int i;
    101 
    102 	for (i = 0; i < addrinarray; i++)
    103 		map_page_into_agp(pages[i]);
    104 	return 0;
    105 }
    106 
    107 static inline int ttm_set_pages_wb(struct page *page, int numpages)
    108 {
    109 	int i;
    110 
    111 	for (i = 0; i < numpages; i++)
    112 		unmap_page_from_agp(page++);
    113 	return 0;
    114 }
    115 
    116 #else /* for CONFIG_AGP */
    117 
    118 static inline int ttm_set_pages_array_wb(struct page **pages, int addrinarray)
    119 {
    120 	return 0;
    121 }
    122 
    123 static inline int ttm_set_pages_array_wc(struct page **pages, int addrinarray)
    124 {
    125 	return 0;
    126 }
    127 
    128 static inline int ttm_set_pages_array_uc(struct page **pages, int addrinarray)
    129 {
    130 	return 0;
    131 }
    132 
    133 static inline int ttm_set_pages_wb(struct page *page, int numpages)
    134 {
    135 	return 0;
    136 }
    137 
    138 #endif /* for CONFIG_AGP */
    139 
    140 static inline int ttm_set_pages_wc(struct page *page, int numpages)
    141 {
    142 	return 0;
    143 }
    144 
    145 static inline int ttm_set_pages_uc(struct page *page, int numpages)
    146 {
    147 	return 0;
    148 }
    149 
    150 #endif /* for CONFIG_X86 */
    151 
    152 #endif
    153