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_ */ 176