arch/nios2/include/asm/io.h

   1 /*
   2  * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
   3  * Scott McNutt <smcnutt@psyent.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef __ASM_NIOS2_IO_H_
   9 #define __ASM_NIOS2_IO_H_
  10
  11 static inline void sync(void)
  12 {
  13         __asm__ __volatile__ ("sync" : : : "memory");
  14 }
  15
  16 /*
  17  * Given a physical address and a length, return a virtual address
  18  * that can be used to access the memory range with the caching
  19  * properties specified by "flags".
  20  */
  21 #define MAP_NOCACHE     1
  22
  23 static inline void *
  24 map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
  25 {
  26         DECLARE_GLOBAL_DATA_PTR;
  27         if (flags)
  28                 return (void *)(paddr | gd->arch.io_region_base);
  29         else
  30                 return (void *)(paddr | gd->arch.mem_region_base);
  31 }
  32 #define map_physmem map_physmem
  33
  34 static inline void *phys_to_virt(phys_addr_t paddr)
  35 {
  36         DECLARE_GLOBAL_DATA_PTR;
  37
  38         return (void *)(paddr | gd->arch.mem_region_base);
  39 }
  40 #define phys_to_virt phys_to_virt
  41
  42 static inline phys_addr_t virt_to_phys(void * vaddr)
  43 {
  44         DECLARE_GLOBAL_DATA_PTR;
  45         return (phys_addr_t)vaddr & gd->arch.physaddr_mask;
  46 }
  47 #define virt_to_phys virt_to_phys
  48
  49 #define __raw_writeb(v,a)       (*(volatile unsigned char  *)(a) = (v))
  50 #define __raw_writew(v,a)       (*(volatile unsigned short *)(a) = (v))
  51 #define __raw_writel(v,a)       (*(volatile unsigned int   *)(a) = (v))
  52
  53 #define __raw_readb(a)          (*(volatile unsigned char  *)(a))
  54 #define __raw_readw(a)          (*(volatile unsigned short *)(a))
  55 #define __raw_readl(a)          (*(volatile unsigned int   *)(a))
  56
  57 #define readb(addr)\
  58         ({unsigned char val;\
  59          asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
  60 #define readw(addr)\
  61         ({unsigned short val;\
  62          asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
  63 #define readl(addr)\
  64         ({unsigned long val;\
  65          asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
  66
  67 #define writeb(val,addr)\
  68         asm volatile ("stbio %0, 0(%1)" : : "r" (val), "r" (addr))
  69 #define writew(val,addr)\
  70         asm volatile ("sthio %0, 0(%1)" : : "r" (val), "r" (addr))
  71 #define writel(val,addr)\
  72         asm volatile ("stwio %0, 0(%1)" : : "r" (val), "r" (addr))
  73
  74 #define inb(addr)       readb(addr)
  75 #define inw(addr)       readw(addr)
  76 #define inl(addr)       readl(addr)
  77 #define outb(val, addr) writeb(val,addr)
  78 #define outw(val, addr) writew(val,addr)
  79 #define outl(val, addr) writel(val,addr)
  80
  81 static inline void insb (unsigned long port, void *dst, unsigned long count)
  82 {
  83         unsigned char *p = dst;
  84         while (count--) *p++ = inb (port);
  85 }
  86 static inline void insw (unsigned long port, void *dst, unsigned long count)
  87 {
  88         unsigned short *p = dst;
  89         while (count--) *p++ = inw (port);
  90 }
  91 static inline void insl (unsigned long port, void *dst, unsigned long count)
  92 {
  93         unsigned long *p = dst;
  94         while (count--) *p++ = inl (port);
  95 }
  96
  97 static inline void outsb (unsigned long port, const void *src, unsigned long count)
  98 {
  99         const unsigned char *p = src;
 100         while (count--) outb (*p++, port);
 101 }
 102
 103 static inline void outsw (unsigned long port, const void *src, unsigned long count)
 104 {
 105         const unsigned short *p = src;
 106         while (count--) outw (*p++, port);
 107 }
 108 static inline void outsl (unsigned long port, const void *src, unsigned long count)
 109 {
 110         const unsigned long *p = src;
 111         while (count--) outl (*p++, port);
 112 }
 113
 114 /*
 115  * Clear and set bits in one shot. These macros can be used to clear and
 116  * set multiple bits in a register using a single call. These macros can
 117  * also be used to set a multiple-bit bit pattern using a mask, by
 118  * specifying the mask in the 'clear' parameter and the new bit pattern
 119  * in the 'set' parameter.
 120  */
 121
 122 #define out_arch(type,endian,a,v)       __raw_write##type(cpu_to_##endian(v),a)
 123 #define in_arch(type,endian,a)          endian##_to_cpu(__raw_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)      __raw_writeb(v,a)
 138 #define in_8(a)         __raw_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 #define memset_io(a, b, c)              memset((void *)(a), (b), (c))
 170 #define memcpy_fromio(a, b, c)          memcpy((a), (void *)(b), (c))
 171 #define memcpy_toio(a, b, c)            memcpy((void *)(a), (b), (c))
 172
 173 #include <asm-generic/io.h>
 174
 175 #endif /* __ASM_NIOS2_IO_H_ */