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 #ifdef CONFIG_SANDBOX64 47 #define readq(addr) ((void)addr, 0) 48 #endif 49 #define writeb(v, addr) ((void)addr) 50 #define writew(v, addr) ((void)addr) 51 #define writel(v, addr) ((void)addr) 52 #ifdef CONFIG_SANDBOX64 53 #define writeq(v, addr) ((void)addr) 54 #endif 55 56 /* 57 * Clear and set bits in one shot. These macros can be used to clear and 58 * set multiple bits in a register using a single call. These macros can 59 * also be used to set a multiple-bit bit pattern using a mask, by 60 * specifying the mask in the 'clear' parameter and the new bit pattern 61 * in the 'set' parameter. 62 */ 63 64 #define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a) 65 #define in_arch(type,endian,a) endian##_to_cpu(read##type(a)) 66 67 #define out_le64(a,v) out_arch(q,le64,a,v) 68 #define out_le32(a,v) out_arch(l,le32,a,v) 69 #define out_le16(a,v) out_arch(w,le16,a,v) 70 71 #define in_le64(a) in_arch(q,le64,a) 72 #define in_le32(a) in_arch(l,le32,a) 73 #define in_le16(a) in_arch(w,le16,a) 74 75 #define out_be32(a,v) out_arch(l,be32,a,v) 76 #define out_be16(a,v) out_arch(w,be16,a,v) 77 78 #define in_be32(a) in_arch(l,be32,a) 79 #define in_be16(a) in_arch(w,be16,a) 80 81 #define out_8(a,v) writeb(v,a) 82 #define in_8(a) readb(a) 83 84 #define clrbits(type, addr, clear) \ 85 out_##type((addr), in_##type(addr) & ~(clear)) 86 87 #define setbits(type, addr, set) \ 88 out_##type((addr), in_##type(addr) | (set)) 89 90 #define clrsetbits(type, addr, clear, set) \ 91 out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) 92 93 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear) 94 #define setbits_be32(addr, set) setbits(be32, addr, set) 95 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) 96 97 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear) 98 #define setbits_le32(addr, set) setbits(le32, addr, set) 99 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) 100 101 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear) 102 #define setbits_be16(addr, set) setbits(be16, addr, set) 103 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) 104 105 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear) 106 #define setbits_le16(addr, set) setbits(le16, addr, set) 107 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) 108 109 #define clrbits_8(addr, clear) clrbits(8, addr, clear) 110 #define setbits_8(addr, set) setbits(8, addr, set) 111 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) 112 113 /* I/O access functions */ 114 int inl(unsigned int addr); 115 int inw(unsigned int addr); 116 int inb(unsigned int addr); 117 118 void outl(unsigned int value, unsigned int addr); 119 void outw(unsigned int value, unsigned int addr); 120 void outb(unsigned int value, unsigned int addr); 121 122 #define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a) 123 #define in_arch(type,endian,a) endian##_to_cpu(read##type(a)) 124 125 #define out_le32(a,v) out_arch(l,le32,a,v) 126 #define out_le16(a,v) out_arch(w,le16,a,v) 127 128 #define in_le32(a) in_arch(l,le32,a) 129 #define in_le16(a) in_arch(w,le16,a) 130 131 #define out_be32(a,v) out_arch(l,be32,a,v) 132 #define out_be16(a,v) out_arch(w,be16,a,v) 133 134 #define in_be32(a) in_arch(l,be32,a) 135 #define in_be16(a) in_arch(w,be16,a) 136 137 #define out_8(a,v) writeb(v,a) 138 #define in_8(a) readb(a) 139 140 #define clrbits(type, addr, clear) \ 141 out_##type((addr), in_##type(addr) & ~(clear)) 142 143 #define setbits(type, addr, set) \ 144 out_##type((addr), in_##type(addr) | (set)) 145 146 #define clrsetbits(type, addr, clear, set) \ 147 out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) 148 149 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear) 150 #define setbits_be32(addr, set) setbits(be32, addr, set) 151 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) 152 153 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear) 154 #define setbits_le32(addr, set) setbits(le32, addr, set) 155 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) 156 157 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear) 158 #define setbits_be16(addr, set) setbits(be16, addr, set) 159 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) 160 161 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear) 162 #define setbits_le16(addr, set) setbits(le16, addr, set) 163 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) 164 165 #define clrbits_8(addr, clear) clrbits(8, addr, clear) 166 #define setbits_8(addr, set) setbits(8, addr, set) 167 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) 168 169 static inline void _insw(volatile u16 *port, void *buf, int ns) 170 { 171 } 172 173 static inline void _outsw(volatile u16 *port, const void *buf, int ns) 174 { 175 } 176 177 #define insw(port, buf, ns) _insw((u16 *)port, buf, ns) 178 #define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns) 179 180 #include <iotrace.h> 181 #include <asm/types.h> 182 183 #endif 184