1 /* 2 * Copyright (c) 2015-2019 François Tigeot <ftigeot@wolfpond.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef _ASM_CACHEFLUSH_H_ 28 #define _ASM_CACHEFLUSH_H_ 29 30 #include <asm/special_insns.h> 31 32 #include <vm/pmap.h> 33 #include <vm/vm_page.h> 34 35 static inline int 36 set_memory_uc(unsigned long addr, int numpages) 37 { 38 pmap_change_attr(addr, numpages, PAT_UNCACHED); 39 return 0; 40 } 41 42 static inline int set_memory_wc(unsigned long vaddr, int numpages) 43 { 44 pmap_change_attr(vaddr, numpages, PAT_WRITE_COMBINING); 45 return 0; 46 } 47 48 static inline int set_memory_wb(unsigned long vaddr, int numpages) 49 { 50 pmap_change_attr(vaddr, numpages, PAT_WRITE_BACK); 51 return 0; 52 } 53 54 static inline int set_pages_uc(struct page *page, int num_pages) 55 { 56 struct vm_page *p = (struct vm_page *)page; 57 58 pmap_change_attr(PHYS_TO_DMAP(VM_PAGE_TO_PHYS(p)), 59 num_pages, PAT_UNCACHED); 60 61 return 0; 62 } 63 64 static inline int set_pages_wb(struct page *page, int num_pages) 65 { 66 struct vm_page *p = (struct vm_page *)page; 67 68 pmap_change_attr(PHYS_TO_DMAP(VM_PAGE_TO_PHYS(p)), 69 num_pages, PAT_WRITE_BACK); 70 71 return 0; 72 } 73 74 static inline int 75 set_pages_array_uc(struct page **pages, int addrinarray) 76 { 77 for (int i = 0; i < addrinarray; i++) 78 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_UNCACHEABLE); 79 80 return 0; 81 } 82 83 static inline int 84 set_pages_array_wb(struct page **pages, int addrinarray) 85 { 86 for (int i = 0; i < addrinarray; i++) 87 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_WRITE_BACK); 88 89 return 0; 90 } 91 92 static inline int 93 set_pages_array_wc(struct page **pages, int addrinarray) 94 { 95 for (int i = 0; i < addrinarray; i++) 96 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_WRITE_COMBINING); 97 98 return 0; 99 } 100 101 #endif /* _ASM_CACHEFLUSH_H_ */ 102