LXR uboot/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
   9void *phys_to_virt(phys_addr_t paddr);
  10#define phys_to_virt phys_to_virt
  11
  12phys_addr_t virt_to_phys(void *vaddr);
  13#define virt_to_phys virt_to_phys
  14
  15void *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 */
  21void 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 */
  27static 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 */
  33static 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 */
  39phys_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 */
 113int inl(unsigned int addr);
 114int inw(unsigned int addr);
 115int inb(unsigned int addr);
 116
 117void outl(unsigned int value, unsigned int addr);
 118void outw(unsigned int value, unsigned int addr);
 119void 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
 168static inline void _insw(volatile u16 *port, void *buf, int ns)
 169{
 170}
 171
 172static inline void _outsw(volatile u16 *port, const void *buf, int ns)
 173{
 174}
 175
 176#define insw(port, buf, ns)             _insw((u16 *)port, buf, ns)
 177#define outsw(port, buf, ns)            _outsw((u16 *)port, buf, ns)
 178
 179#include <iotrace.h>
 180#include <asm/types.h>
 181
 182#endif
 183