arch/sandbox/include/asm/io.h

   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 enum sandboxio_size_t {
  10         SB_SIZE_8,
  11         SB_SIZE_16,
  12         SB_SIZE_32,
  13         SB_SIZE_64,
  14 };
  15
  16 void *phys_to_virt(phys_addr_t paddr);
  17 #define phys_to_virt phys_to_virt
  18
  19 phys_addr_t virt_to_phys(void *vaddr);
  20 #define virt_to_phys virt_to_phys
  21
  22 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags);
  23 #define map_physmem map_physmem
  24
  25 /*
  26  * Take down a mapping set up by map_physmem().
  27  */
  28 void unmap_physmem(const void *vaddr, unsigned long flags);
  29 #define unmap_physmem unmap_physmem
  30
  31 /* Map from a pointer to our RAM buffer */
  32 phys_addr_t map_to_sysmem(const void *ptr);
  33
  34 unsigned long sandbox_read(const void *addr, enum sandboxio_size_t size);
  35 void sandbox_write(void *addr, unsigned int val, enum sandboxio_size_t size);
  36
  37 #define readb(addr) sandbox_read((const void *)addr, SB_SIZE_8)
  38 #define readw(addr) sandbox_read((const void *)addr, SB_SIZE_16)
  39 #define readl(addr) sandbox_read((const void *)addr, SB_SIZE_32)
  40 #ifdef CONFIG_SANDBOX64
  41 #define readq(addr) sandbox_read((const void *)addr, SB_SIZE_64)
  42 #endif
  43 #define writeb(v, addr) sandbox_write((void *)addr, v, SB_SIZE_8)
  44 #define writew(v, addr) sandbox_write((void *)addr, v, SB_SIZE_16)
  45 #define writel(v, addr) sandbox_write((void *)addr, v, SB_SIZE_32)
  46 #ifdef CONFIG_SANDBOX64
  47 #define writeq(v, addr) sandbox_write((void *)addr, v, SB_SIZE_64)
  48 #endif
  49
  50 /*
  51  * Clear and set bits in one shot. These macros can be used to clear and
  52  * set multiple bits in a register using a single call. These macros can
  53  * also be used to set a multiple-bit bit pattern using a mask, by
  54  * specifying the mask in the 'clear' parameter and the new bit pattern
  55  * in the 'set' parameter.
  56  */
  57
  58 #define out_arch(type,endian,a,v)       write##type(cpu_to_##endian(v),a)
  59 #define in_arch(type,endian,a)          endian##_to_cpu(read##type(a))
  60
  61 #define out_le64(a,v)   out_arch(q,le64,a,v)
  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_le64(a)      in_arch(q,le64,a)
  66 #define in_le32(a)      in_arch(l,le32,a)
  67 #define in_le16(a)      in_arch(w,le16,a)
  68
  69 #define out_be32(a,v)   out_arch(l,be32,a,v)
  70 #define out_be16(a,v)   out_arch(w,be16,a,v)
  71
  72 #define in_be32(a)      in_arch(l,be32,a)
  73 #define in_be16(a)      in_arch(w,be16,a)
  74
  75 #define out_8(a,v)      writeb(v,a)
  76 #define in_8(a)         readb(a)
  77
  78 #define clrbits(type, addr, clear) \
  79         out_##type((addr), in_##type(addr) & ~(clear))
  80
  81 #define setbits(type, addr, set) \
  82         out_##type((addr), in_##type(addr) | (set))
  83
  84 #define clrsetbits(type, addr, clear, set) \
  85         out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
  86
  87 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
  88 #define setbits_be32(addr, set) setbits(be32, addr, set)
  89 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
  90
  91 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
  92 #define setbits_le32(addr, set) setbits(le32, addr, set)
  93 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
  94
  95 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
  96 #define setbits_be16(addr, set) setbits(be16, addr, set)
  97 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
  98
  99 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
 100 #define setbits_le16(addr, set) setbits(le16, addr, set)
 101 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
 102
 103 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
 104 #define setbits_8(addr, set) setbits(8, addr, set)
 105 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
 106
 107 /* I/O access functions */
 108 int _inl(unsigned int addr);
 109 int _inw(unsigned int addr);
 110 int _inb(unsigned int addr);
 111
 112 void _outl(unsigned int value, unsigned int addr);
 113 void _outw(unsigned int value, unsigned int addr);
 114 void _outb(unsigned int value, unsigned int addr);
 115
 116 #define inb(port)       _inb((uintptr_t)(port))
 117 #define inw(port)       _inw((uintptr_t)(port))
 118 #define inl(port)       _inl((uintptr_t)(port))
 119
 120 #define outb(val, port) _outb(val, (uintptr_t)(port))
 121 #define outw(val, port) _outw(val, (uintptr_t)(port))
 122 #define outl(val, port) _outl(val, (uintptr_t)(port))
 123
 124 #define out_arch(type,endian,a,v)       write##type(cpu_to_##endian(v),a)
 125 #define in_arch(type,endian,a)          endian##_to_cpu(read##type(a))
 126
 127 #define out_le32(a,v)   out_arch(l,le32,a,v)
 128 #define out_le16(a,v)   out_arch(w,le16,a,v)
 129
 130 #define in_le32(a)      in_arch(l,le32,a)
 131 #define in_le16(a)      in_arch(w,le16,a)
 132
 133 #define out_be32(a,v)   out_arch(l,be32,a,v)
 134 #define out_be16(a,v)   out_arch(w,be16,a,v)
 135
 136 #define in_be32(a)      in_arch(l,be32,a)
 137 #define in_be16(a)      in_arch(w,be16,a)
 138
 139 #define out_8(a,v)      writeb(v,a)
 140 #define in_8(a)         readb(a)
 141
 142 #define clrbits(type, addr, clear) \
 143         out_##type((addr), in_##type(addr) & ~(clear))
 144
 145 #define setbits(type, addr, set) \
 146         out_##type((addr), in_##type(addr) | (set))
 147
 148 #define clrsetbits(type, addr, clear, set) \
 149         out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
 150
 151 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
 152 #define setbits_be32(addr, set) setbits(be32, addr, set)
 153 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
 154
 155 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
 156 #define setbits_le32(addr, set) setbits(le32, addr, set)
 157 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
 158
 159 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
 160 #define setbits_be16(addr, set) setbits(be16, addr, set)
 161 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
 162
 163 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
 164 #define setbits_le16(addr, set) setbits(le16, addr, set)
 165 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
 166
 167 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
 168 #define setbits_8(addr, set) setbits(8, addr, set)
 169 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
 170
 171 static inline void _insw(volatile u16 *port, void *buf, int ns)
 172 {
 173 }
 174
 175 static inline void _outsw(volatile u16 *port, const void *buf, int ns)
 176 {
 177 }
 178
 179 static inline void memset_io(volatile void *addr, unsigned char val, int count)
 180 {
 181 }
 182
 183 static inline void memcpy_fromio(void *dst, const volatile void *src, int count)
 184 {
 185 }
 186
 187 static inline void memcpy_toio(volatile void *dst, const void *src, int count)
 188 {
 189 }
 190
 191 #define insw(port, buf, ns)             _insw((u16 *)port, buf, ns)
 192 #define outsw(port, buf, ns)            _outsw((u16 *)port, buf, ns)
 193
 194 /* IO space accessors */
 195 #define clrio(type, addr, clear) \
 196         out##type(in##type(addr) & ~(clear), (addr))
 197
 198 #define setio(type, addr, set) \
 199         out##type(in##type(addr) | (set), (addr))
 200
 201 #define clrsetio(type, addr, clear, set) \
 202         out##type((in##type(addr) & ~(clear)) | (set), (addr))
 203
 204 #define clrio_32(addr, clear) clrio(l, addr, clear)
 205 #define clrio_16(addr, clear) clrio(w, addr, clear)
 206 #define clrio_8(addr, clear) clrio(b, addr, clear)
 207
 208 #define setio_32(addr, set) setio(l, addr, set)
 209 #define setio_16(addr, set) setio(w, addr, set)
 210 #define setio_8(addr, set) setio(b, addr, set)
 211
 212 #define clrsetio_32(addr, clear, set) clrsetio(l, addr, clear, set)
 213 #define clrsetio_16(addr, clear, set) clrsetio(w, addr, clear, set)
 214 #define clrsetio_8(addr, clear, set) clrsetio(b, addr, clear, set)
 215
 216 #include <iotrace.h>
 217 #include <asm/types.h>
 218 #include <asm-generic/io.h>
 219
 220 /* For sandbox, we want addresses to point into our RAM buffer */
 221 static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
 222 {
 223         return map_physmem(paddr, len, MAP_WRBACK);
 224 }
 225
 226 /* Remove a previous mapping */
 227 static inline void unmap_sysmem(const void *vaddr)
 228 {
 229         unmap_physmem(vaddr, MAP_WRBACK);
 230 }
 231
 232
 233 #endif