1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2016 Matt Macy (mmacy@nextbsd.org) 4 * Copyright (c) 2017 Mellanox Technologies, Ltd. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _LINUXKPI_ASM_SET_MEMORY_H_ 30 #define _LINUXKPI_ASM_SET_MEMORY_H_ 31 32 #include <linux/page.h> 33 34 static inline int 35 set_memory_uc(unsigned long addr, int numpages) 36 { 37 return (pmap_change_attr(addr, numpages, VM_MEMATTR_UNCACHEABLE)); 38 } 39 40 static inline int 41 set_memory_wc(unsigned long addr, int numpages) 42 { 43 #ifdef VM_MEMATTR_WRITE_COMBINING 44 return (pmap_change_attr(addr, numpages, VM_MEMATTR_WRITE_COMBINING)); 45 #else 46 return (set_memory_uc(addr, numpages)); 47 #endif 48 } 49 50 static inline int 51 set_memory_wb(unsigned long addr, int numpages) 52 { 53 return (pmap_change_attr(addr, numpages, VM_MEMATTR_WRITE_BACK)); 54 } 55 56 static inline int 57 set_pages_uc(struct page *page, int numpages) 58 { 59 KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages)); 60 61 pmap_page_set_memattr(page, VM_MEMATTR_UNCACHEABLE); 62 return (0); 63 } 64 65 static inline int 66 set_pages_wc(struct page *page, int numpages) 67 { 68 KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages)); 69 70 #ifdef VM_MEMATTR_WRITE_COMBINING 71 pmap_page_set_memattr(page, VM_MEMATTR_WRITE_COMBINING); 72 #else 73 return (set_pages_uc(page, numpages)); 74 #endif 75 return (0); 76 } 77 78 static inline int 79 set_pages_wb(struct page *page, int numpages) 80 { 81 KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages)); 82 83 pmap_page_set_memattr(page, VM_MEMATTR_WRITE_BACK); 84 return (0); 85 } 86 87 static inline int 88 set_pages_array_wb(struct page **pages, int addrinarray) 89 { 90 int i; 91 92 for (i = 0; i < addrinarray; i++) 93 set_pages_wb(pages[i], 1); 94 return (0); 95 } 96 97 static inline int 98 set_pages_array_wc(struct page **pages, int addrinarray) 99 { 100 int i; 101 102 for (i = 0; i < addrinarray; i++) 103 set_pages_wc(pages[i], 1); 104 return (0); 105 } 106 107 static inline int 108 set_pages_array_uc(struct page **pages, int addrinarray) 109 { 110 int i; 111 112 for (i = 0; i < addrinarray; i++) 113 set_pages_uc(pages[i], 1); 114 return (0); 115 } 116 117 #endif /* _LINUXKPI_ASM_SET_MEMORY_H_ */ 118