1 /* 2 * Copyright (c) 2011 The Chromium OS Authors. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef __SANDBOX_ASM_IO_H 8 #define __SANDBOX_ASM_IO_H 9 10 void *phys_to_virt(phys_addr_t paddr); 11 #define phys_to_virt phys_to_virt 12 13 phys_addr_t virt_to_phys(void *vaddr); 14 #define virt_to_phys virt_to_phys 15 16 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags); 17 #define map_physmem map_physmem 18 19 /* 20 * Take down a mapping set up by map_physmem(). 21 */ 22 void unmap_physmem(const void *vaddr, unsigned long flags); 23 #define unmap_physmem unmap_physmem 24 25 #include <asm-generic/io.h> 26 27 /* For sandbox, we want addresses to point into our RAM buffer */ 28 static inline void *map_sysmem(phys_addr_t paddr, unsigned long len) 29 { 30 return map_physmem(paddr, len, MAP_WRBACK); 31 } 32 33 /* Remove a previous mapping */ 34 static inline void unmap_sysmem(const void *vaddr) 35 { 36 unmap_physmem(vaddr, MAP_WRBACK); 37 } 38 39 /* Map from a pointer to our RAM buffer */ 40 phys_addr_t map_to_sysmem(const void *ptr); 41 42 /* Define nops for sandbox I/O access */ 43 #define readb(addr) ((void)addr, 0) 44 #define readw(addr) ((void)addr, 0) 45 #define readl(addr) ((void)addr, 0) 46 #define writeb(v, addr) ((void)addr) 47 #define writew(v, addr) ((void)addr) 48 #define writel(v, addr) ((void)addr) 49 50 /* I/O access functions */ 51 int inl(unsigned int addr); 52 int inw(unsigned int addr); 53 int inb(unsigned int addr); 54 55 void outl(unsigned int value, unsigned int addr); 56 void outw(unsigned int value, unsigned int addr); 57 void outb(unsigned int value, unsigned int addr); 58 59 #define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a) 60 #define in_arch(type,endian,a) endian##_to_cpu(read##type(a)) 61 62 #define out_le32(a,v) out_arch(l,le32,a,v) 63 #define out_le16(a,v) out_arch(w,le16,a,v) 64 65 #define in_le32(a) in_arch(l,le32,a) 66 #define in_le16(a) in_arch(w,le16,a) 67 68 #define out_be32(a,v) out_arch(l,be32,a,v) 69 #define out_be16(a,v) out_arch(w,be16,a,v) 70 71 #define in_be32(a) in_arch(l,be32,a) 72 #define in_be16(a) in_arch(w,be16,a) 73 74 #define out_8(a,v) writeb(v,a) 75 #define in_8(a) readb(a) 76 77 #define clrbits(type, addr, clear) \ 78 out_##type((addr), in_##type(addr) & ~(clear)) 79 80 #define setbits(type, addr, set) \ 81 out_##type((addr), in_##type(addr) | (set)) 82 83 #define clrsetbits(type, addr, clear, set) \ 84 out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) 85 86 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear) 87 #define setbits_be32(addr, set) setbits(be32, addr, set) 88 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) 89 90 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear) 91 #define setbits_le32(addr, set) setbits(le32, addr, set) 92 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) 93 94 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear) 95 #define setbits_be16(addr, set) setbits(be16, addr, set) 96 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) 97 98 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear) 99 #define setbits_le16(addr, set) setbits(le16, addr, set) 100 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) 101 102 #define clrbits_8(addr, clear) clrbits(8, addr, clear) 103 #define setbits_8(addr, set) setbits(8, addr, set) 104 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) 105 106 static inline void _insw(volatile u16 *port, void *buf, int ns) 107 { 108 } 109 110 static inline void _outsw(volatile u16 *port, const void *buf, int ns) 111 { 112 } 113 114 #define insw(port, buf, ns) _insw((u16 *)port, buf, ns) 115 #define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns) 116 117 /* For systemace.c */ 118 #define out16(addr, val) 119 #define in16(addr) 0 120 121 #include <iotrace.h> 122 #include <asm/types.h> 123 124 #endif 125