arch/sandbox/include/asm/io.h

   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