1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) 2011 The Chromium OS Authors. 4 */ 5 6 #ifndef __SANDBOX_ASM_IO_H 7 #define __SANDBOX_ASM_IO_H 8 9 void *phys_to_virt(phys_addr_t paddr); 10 #define phys_to_virt phys_to_virt 11 12 phys_addr_t virt_to_phys(void *vaddr); 13 #define virt_to_phys virt_to_phys 14 15 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags); 16 #define map_physmem map_physmem 17 18 /* 19 * Take down a mapping set up by map_physmem(). 20 */ 21 void unmap_physmem(const void *vaddr, unsigned long flags); 22 #define unmap_physmem unmap_physmem 23 24 #include <asm-generic/io.h> 25 26 /* For sandbox, we want addresses to point into our RAM buffer */ 27 static inline void *map_sysmem(phys_addr_t paddr, unsigned long len) 28 { 29 return map_physmem(paddr, len, MAP_WRBACK); 30 } 31 32 /* Remove a previous mapping */ 33 static inline void unmap_sysmem(const void *vaddr) 34 { 35 unmap_physmem(vaddr, MAP_WRBACK); 36 } 37 38 /* Map from a pointer to our RAM buffer */ 39 phys_addr_t map_to_sysmem(const void *ptr); 40 41 /* Define nops for sandbox I/O access */ 42 #define readb(addr) ((void)addr, 0) 43 #define readw(addr) ((void)addr, 0) 44 #define readl(addr) ((void)addr, 0) 45 #ifdef CONFIG_SANDBOX64 46 #define readq(addr) ((void)addr, 0) 47 #endif 48 #define writeb(v, addr) ((void)addr) 49 #define writew(v, addr) ((void)addr) 50 #define writel(v, addr) ((void)addr) 51 #ifdef CONFIG_SANDBOX64 52 #define writeq(v, addr) ((void)addr) 53 #endif 54 55 /* 56 * Clear and set bits in one shot. These macros can be used to clear and 57 * set multiple bits in a register using a single call. These macros can 58 * also be used to set a multiple-bit bit pattern using a mask, by 59 * specifying the mask in the 'clear' parameter and the new bit pattern 60 * in the 'set' parameter. 61 */ 62 63 #define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a) 64 #define in_arch(type,endian,a) endian##_to_cpu(read##type(a)) 65 66 #define out_le64(a,v) out_arch(q,le64,a,v) 67 #define out_le32(a,v) out_arch(l,le32,a,v) 68 #define out_le16(a,v) out_arch(w,le16,a,v) 69 70 #define in_le64(a) in_arch(q,le64,a) 71 #define in_le32(a) in_arch(l,le32,a) 72 #define in_le16(a) in_arch(w,le16,a) 73 74 #define out_be32(a,v) out_arch(l,be32,a,v) 75 #define out_be16(a,v) out_arch(w,be16,a,v) 76 77 #define in_be32(a) in_arch(l,be32,a) 78 #define in_be16(a) in_arch(w,be16,a) 79 80 #define out_8(a,v) writeb(v,a) 81 #define in_8(a) readb(a) 82 83 #define clrbits(type, addr, clear) \ 84 out_##type((addr), in_##type(addr) & ~(clear)) 85 86 #define setbits(type, addr, set) \ 87 out_##type((addr), in_##type(addr) | (set)) 88 89 #define clrsetbits(type, addr, clear, set) \ 90 out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) 91 92 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear) 93 #define setbits_be32(addr, set) setbits(be32, addr, set) 94 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) 95 96 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear) 97 #define setbits_le32(addr, set) setbits(le32, addr, set) 98 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) 99 100 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear) 101 #define setbits_be16(addr, set) setbits(be16, addr, set) 102 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) 103 104 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear) 105 #define setbits_le16(addr, set) setbits(le16, addr, set) 106 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) 107 108 #define clrbits_8(addr, clear) clrbits(8, addr, clear) 109 #define setbits_8(addr, set) setbits(8, addr, set) 110 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) 111 112 /* I/O access functions */ 113 int inl(unsigned int addr); 114 int inw(unsigned int addr); 115 int inb(unsigned int addr); 116 117 void outl(unsigned int value, unsigned int addr); 118 void outw(unsigned int value, unsigned int addr); 119 void outb(unsigned int value, unsigned int addr); 120 121 #define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a) 122 #define in_arch(type,endian,a) endian##_to_cpu(read##type(a)) 123 124 #define out_le32(a,v) out_arch(l,le32,a,v) 125 #define out_le16(a,v) out_arch(w,le16,a,v) 126 127 #define in_le32(a) in_arch(l,le32,a) 128 #define in_le16(a) in_arch(w,le16,a) 129 130 #define out_be32(a,v) out_arch(l,be32,a,v) 131 #define out_be16(a,v) out_arch(w,be16,a,v) 132 133 #define in_be32(a) in_arch(l,be32,a) 134 #define in_be16(a) in_arch(w,be16,a) 135 136 #define out_8(a,v) writeb(v,a) 137 #define in_8(a) readb(a) 138 139 #define clrbits(type, addr, clear) \ 140 out_##type((addr), in_##type(addr) & ~(clear)) 141 142 #define setbits(type, addr, set) \ 143 out_##type((addr), in_##type(addr) | (set)) 144 145 #define clrsetbits(type, addr, clear, set) \ 146 out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) 147 148 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear) 149 #define setbits_be32(addr, set) setbits(be32, addr, set) 150 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) 151 152 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear) 153 #define setbits_le32(addr, set) setbits(le32, addr, set) 154 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) 155 156 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear) 157 #define setbits_be16(addr, set) setbits(be16, addr, set) 158 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) 159 160 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear) 161 #define setbits_le16(addr, set) setbits(le16, addr, set) 162 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) 163 164 #define clrbits_8(addr, clear) clrbits(8, addr, clear) 165 #define setbits_8(addr, set) setbits(8, addr, set) 166 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) 167 168 static inline void _insw(volatile u16 *port, void *buf, int ns) 169 { 170 } 171 172 static inline void _outsw(volatile u16 *port, const void *buf, int ns) 173 { 174 } 175 176 static inline void memset_io(volatile void *addr, unsigned char val, int count) 177 { 178 } 179 180 static inline void memcpy_fromio(void *dst, const volatile void *src, int count) 181 { 182 } 183 184 static inline void memcpy_toio(volatile void *dst, const void *src, int count) 185 { 186 } 187 188 #define insw(port, buf, ns) _insw((u16 *)port, buf, ns) 189 #define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns) 190 191 #include <iotrace.h> 192 #include <asm/types.h> 193 194 #endif 195