1 /* 2 * Copyright (c) 2015-2018 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 set_memory_wc(unsigned long vaddr, int numpages) 36 { 37 pmap_change_attr(vaddr, numpages, PAT_WRITE_COMBINING); 38 return 0; 39 } 40 41 static inline int set_memory_wb(unsigned long vaddr, int numpages) 42 { 43 pmap_change_attr(vaddr, numpages, PAT_WRITE_BACK); 44 return 0; 45 } 46 47 static inline int set_pages_uc(struct page *page, int num_pages) 48 { 49 struct vm_page *p = (struct vm_page *)page; 50 51 pmap_change_attr(PHYS_TO_DMAP(VM_PAGE_TO_PHYS(p)), 52 num_pages, PAT_UNCACHED); 53 54 return 0; 55 } 56 57 static inline int set_pages_wb(struct page *page, int num_pages) 58 { 59 struct vm_page *p = (struct vm_page *)page; 60 61 pmap_change_attr(PHYS_TO_DMAP(VM_PAGE_TO_PHYS(p)), 62 num_pages, PAT_WRITE_BACK); 63 64 return 0; 65 } 66 67 static inline int 68 set_pages_array_uc(struct page **pages, int addrinarray) 69 { 70 for (int i = 0; i < addrinarray; i++) 71 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_UNCACHEABLE); 72 73 return 0; 74 } 75 76 static inline int 77 set_pages_array_wb(struct page **pages, int addrinarray) 78 { 79 for (int i = 0; i < addrinarray; i++) 80 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_WRITE_BACK); 81 82 return 0; 83 } 84 85 static inline int 86 set_pages_array_wc(struct page **pages, int addrinarray) 87 { 88 for (int i = 0; i < addrinarray; i++) 89 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_WRITE_COMBINING); 90 91 return 0; 92 } 93 94 #endif /* _ASM_CACHEFLUSH_H_ */ 95