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 vm_size_t len; 38 39 len = (vm_size_t)numpages << PAGE_SHIFT; 40 return (-pmap_change_attr(addr, len, VM_MEMATTR_UNCACHEABLE)); 41 } 42 43 static inline int 44 set_memory_wc(unsigned long addr, int numpages) 45 { 46 #ifdef VM_MEMATTR_WRITE_COMBINING 47 vm_size_t len; 48 49 len = (vm_size_t)numpages << PAGE_SHIFT; 50 return (-pmap_change_attr(addr, len, VM_MEMATTR_WRITE_COMBINING)); 51 #else 52 return (set_memory_uc(addr, numpages)); 53 #endif 54 } 55 56 static inline int 57 set_memory_wb(unsigned long addr, int numpages) 58 { 59 vm_size_t len; 60 61 len = (vm_size_t)numpages << PAGE_SHIFT; 62 return (-pmap_change_attr(addr, len, VM_MEMATTR_WRITE_BACK)); 63 } 64 65 static inline int 66 set_pages_uc(struct page *page, int numpages) 67 { 68 KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages)); 69 70 pmap_page_set_memattr(page, VM_MEMATTR_UNCACHEABLE); 71 return (0); 72 } 73 74 static inline int 75 set_pages_wc(struct page *page, int numpages) 76 { 77 KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages)); 78 79 #ifdef VM_MEMATTR_WRITE_COMBINING 80 pmap_page_set_memattr(page, VM_MEMATTR_WRITE_COMBINING); 81 #else 82 return (set_pages_uc(page, numpages)); 83 #endif 84 return (0); 85 } 86 87 static inline int 88 set_pages_wb(struct page *page, int numpages) 89 { 90 KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages)); 91 92 pmap_page_set_memattr(page, VM_MEMATTR_WRITE_BACK); 93 return (0); 94 } 95 96 static inline int 97 set_pages_array_wb(struct page **pages, int addrinarray) 98 { 99 int i; 100 101 for (i = 0; i < addrinarray; i++) 102 set_pages_wb(pages[i], 1); 103 return (0); 104 } 105 106 static inline int 107 set_pages_array_wc(struct page **pages, int addrinarray) 108 { 109 int i; 110 111 for (i = 0; i < addrinarray; i++) 112 set_pages_wc(pages[i], 1); 113 return (0); 114 } 115 116 static inline int 117 set_pages_array_uc(struct page **pages, int addrinarray) 118 { 119 int i; 120 121 for (i = 0; i < addrinarray; i++) 122 set_pages_uc(pages[i], 1); 123 return (0); 124 } 125 126 #endif /* _LINUXKPI_ASM_SET_MEMORY_H_ */ 127