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#include <linux/types.h> 10 11enum sandboxio_size_t { 12 SB_SIZE_8, 13 SB_SIZE_16, 14 SB_SIZE_32, 15 SB_SIZE_64, 16}; 17 18void *phys_to_virt(phys_addr_t paddr); 19#define phys_to_virt phys_to_virt 20 21phys_addr_t virt_to_phys(void *vaddr); 22#define virt_to_phys virt_to_phys 23 24void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags); 25#define map_physmem map_physmem 26 27/* 28 * Take down a mapping set up by map_physmem(). 29 */ 30void unmap_physmem(const void *vaddr, unsigned long flags); 31#define unmap_physmem unmap_physmem 32 33/* Map from a pointer to our RAM buffer */ 34phys_addr_t map_to_sysmem(const void *ptr); 35 36unsigned long sandbox_read(const void *addr, enum sandboxio_size_t size); 37void sandbox_write(void *addr, unsigned int val, enum sandboxio_size_t size); 38 39#define readb(addr) sandbox_read((const void *)addr, SB_SIZE_8) 40#define readw(addr) sandbox_read((const void *)addr, SB_SIZE_16) 41#define readl(addr) sandbox_read((const void *)addr, SB_SIZE_32) 42#ifdef CONFIG_SANDBOX64 43#define readq(addr) sandbox_read((const void *)addr, SB_SIZE_64) 44#endif 45#define writeb(v, addr) sandbox_write((void *)addr, v, SB_SIZE_8) 46#define writew(v, addr) sandbox_write((void *)addr, v, SB_SIZE_16) 47#define writel(v, addr) sandbox_write((void *)addr, v, SB_SIZE_32) 48#ifdef CONFIG_SANDBOX64 49#define writeq(v, addr) sandbox_write((void *)addr, v, SB_SIZE_64) 50#endif 51 52/* 53 * Clear and set bits in one shot. These macros can be used to clear and 54 * set multiple bits in a register using a single call. These macros can 55 * also be used to set a multiple-bit bit pattern using a mask, by 56 * specifying the mask in the 'clear' parameter and the new bit pattern 57 * in the 'set' parameter. 58 */ 59 60#define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a) 61#define in_arch(type,endian,a) endian##_to_cpu(read##type(a)) 62 63#define out_le64(a,v) out_arch(q,le64,a,v) 64#define out_le32(a,v) out_arch(l,le32,a,v) 65#define out_le16(a,v) out_arch(w,le16,a,v) 66 67#define in_le64(a) in_arch(q,le64,a) 68#define in_le32(a) in_arch(l,le32,a) 69#define in_le16(a) in_arch(w,le16,a) 70 71#define out_be32(a,v) out_arch(l,be32,a,v) 72#define out_be16(a,v) out_arch(w,be16,a,v) 73 74#define in_be32(a) in_arch(l,be32,a) 75#define in_be16(a) in_arch(w,be16,a) 76 77#define out_8(a,v) writeb(v,a) 78#define in_8(a) readb(a) 79 80#define clrbits(type, addr, clear) \ 81 out_##type((addr), in_##type(addr) & ~(clear)) 82 83#define setbits(type, addr, set) \ 84 out_##type((addr), in_##type(addr) | (set)) 85 86#define clrsetbits(type, addr, clear, set) \ 87 out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) 88 89#define clrbits_be32(addr, clear) clrbits(be32, addr, clear) 90#define setbits_be32(addr, set) setbits(be32, addr, set) 91#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) 92 93#define clrbits_le32(addr, clear) clrbits(le32, addr, clear) 94#define setbits_le32(addr, set) setbits(le32, addr, set) 95#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) 96 97#define clrbits_be16(addr, clear) clrbits(be16, addr, clear) 98#define setbits_be16(addr, set) setbits(be16, addr, set) 99#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) 100 101#define clrbits_le16(addr, clear) clrbits(le16, addr, clear) 102#define setbits_le16(addr, set) setbits(le16, addr, set) 103#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) 104 105#define clrbits_8(addr, clear) clrbits(8, addr, clear) 106#define setbits_8(addr, set) setbits(8, addr, set) 107#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) 108 109/* I/O access functions */ 110int _inl(unsigned int addr); 111int _inw(unsigned int addr); 112int _inb(unsigned int addr); 113 114void _outl(unsigned int value, unsigned int addr); 115void _outw(unsigned int value, unsigned int addr); 116void _outb(unsigned int value, unsigned int addr); 117 118#define inb(port) _inb((uintptr_t)(port)) 119#define inw(port) _inw((uintptr_t)(port)) 120#define inl(port) _inl((uintptr_t)(port)) 121 122#define outb(val, port) _outb(val, (uintptr_t)(port)) 123#define outw(val, port) _outw(val, (uintptr_t)(port)) 124#define outl(val, port) _outl(val, (uintptr_t)(port)) 125 126#define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a) 127#define in_arch(type,endian,a) endian##_to_cpu(read##type(a)) 128 129#define out_le32(a,v) out_arch(l,le32,a,v) 130#define out_le16(a,v) out_arch(w,le16,a,v) 131 132#define in_le32(a) in_arch(l,le32,a) 133#define in_le16(a) in_arch(w,le16,a) 134 135#define out_be32(a,v) out_arch(l,be32,a,v) 136#define out_be16(a,v) out_arch(w,be16,a,v) 137 138#define in_be32(a) in_arch(l,be32,a) 139#define in_be16(a) in_arch(w,be16,a) 140 141#define out_8(a,v) writeb(v,a) 142#define in_8(a) readb(a) 143 144#define clrbits(type, addr, clear) \ 145 out_##type((addr), in_##type(addr) & ~(clear)) 146 147#define setbits(type, addr, set) \ 148 out_##type((addr), in_##type(addr) | (set)) 149 150#define clrsetbits(type, addr, clear, set) \ 151 out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) 152 153#define clrbits_be32(addr, clear) clrbits(be32, addr, clear) 154#define setbits_be32(addr, set) setbits(be32, addr, set) 155#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) 156 157#define clrbits_le32(addr, clear) clrbits(le32, addr, clear) 158#define setbits_le32(addr, set) setbits(le32, addr, set) 159#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) 160 161#define clrbits_be16(addr, clear) clrbits(be16, addr, clear) 162#define setbits_be16(addr, set) setbits(be16, addr, set) 163#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) 164 165#define clrbits_le16(addr, clear) clrbits(le16, addr, clear) 166#define setbits_le16(addr, set) setbits(le16, addr, set) 167#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) 168 169#define clrbits_8(addr, clear) clrbits(8, addr, clear) 170#define setbits_8(addr, set) setbits(8, addr, set) 171#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) 172 173static inline void _insw(volatile u16 *port, void *buf, int ns) 174{ 175} 176 177static inline void _outsw(volatile u16 *port, const void *buf, int ns) 178{ 179} 180 181static inline void memset_io(volatile void *addr, unsigned char val, int count) 182{ 183} 184 185static inline void memcpy_fromio(void *dst, const volatile void *src, int count) 186{ 187} 188 189static inline void memcpy_toio(volatile void *dst, const void *src, int count) 190{ 191} 192 193#define insw(port, buf, ns) _insw((u16 *)port, buf, ns) 194#define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns) 195 196/* IO space accessors */ 197#define clrio(type, addr, clear) \ 198 out##type(in##type(addr) & ~(clear), (addr)) 199 200#define setio(type, addr, set) \ 201 out##type(in##type(addr) | (set), (addr)) 202 203#define clrsetio(type, addr, clear, set) \ 204 out##type((in##type(addr) & ~(clear)) | (set), (addr)) 205 206#define clrio_32(addr, clear) clrio(l, addr, clear) 207#define clrio_16(addr, clear) clrio(w, addr, clear) 208#define clrio_8(addr, clear) clrio(b, addr, clear) 209 210#define setio_32(addr, set) setio(l, addr, set) 211#define setio_16(addr, set) setio(w, addr, set) 212#define setio_8(addr, set) setio(b, addr, set) 213 214#define clrsetio_32(addr, clear, set) clrsetio(l, addr, clear, set) 215#define clrsetio_16(addr, clear, set) clrsetio(w, addr, clear, set) 216#define clrsetio_8(addr, clear, set) clrsetio(b, addr, clear, set) 217 218#include <iotrace.h> 219#include <asm/types.h> 220#include <asm-generic/io.h> 221 222/* For sandbox, we want addresses to point into our RAM buffer */ 223static inline void *map_sysmem(phys_addr_t paddr, unsigned long len) 224{ 225 return map_physmem(paddr, len, MAP_WRBACK); 226} 227 228/* Remove a previous mapping */ 229static inline void unmap_sysmem(const void *vaddr) 230{ 231 unmap_physmem(vaddr, MAP_WRBACK); 232} 233 234/** 235 * nomap_sysmem() - pass through an address unchanged 236 * 237 * This is used to indicate an address which should NOT be mapped, e.g. in 238 * SMBIOS tables. Using this function instead of a case shows that the sandbox 239 * conversion has been done 240 */ 241static inline void *nomap_sysmem(phys_addr_t paddr, unsigned long len) 242{ 243 return (void *)(uintptr_t)paddr; 244} 245 246static inline phys_addr_t nomap_to_sysmem(const void *ptr) 247{ 248 return (phys_addr_t)(uintptr_t)ptr; 249} 250 251#endif 252