1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * (C) Copyright 2004, Psyent Corporation <www.psyent.com> 4 * Scott McNutt <smcnutt@psyent.com> 5 */ 6 7#ifndef __ASM_NIOS2_IO_H_ 8#define __ASM_NIOS2_IO_H_ 9 10#include <asm/global_data.h> 11 12static inline void sync(void) 13{ 14 __asm__ __volatile__ ("sync" : : : "memory"); 15} 16 17/* 18 * Given a physical address and a length, return a virtual address 19 * that can be used to access the memory range with the caching 20 * properties specified by "flags". 21 */ 22#define MAP_NOCACHE 1 23 24static inline void * 25map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) 26{ 27 DECLARE_GLOBAL_DATA_PTR; 28 if (flags) 29 return (void *)(paddr | gd->arch.io_region_base); 30 else 31 return (void *)(paddr | gd->arch.mem_region_base); 32} 33#define map_physmem map_physmem 34 35static inline void *phys_to_virt(phys_addr_t paddr) 36{ 37 DECLARE_GLOBAL_DATA_PTR; 38 39 return (void *)(paddr | gd->arch.mem_region_base); 40} 41#define phys_to_virt phys_to_virt 42 43static inline phys_addr_t virt_to_phys(void * vaddr) 44{ 45 DECLARE_GLOBAL_DATA_PTR; 46 return (phys_addr_t)vaddr & gd->arch.physaddr_mask; 47} 48#define virt_to_phys virt_to_phys 49 50#define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v)) 51#define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v)) 52#define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v)) 53 54#define __raw_readb(a) (*(volatile unsigned char *)(a)) 55#define __raw_readw(a) (*(volatile unsigned short *)(a)) 56#define __raw_readl(a) (*(volatile unsigned int *)(a)) 57 58#define readb(addr)\ 59 ({unsigned char val;\ 60 asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) 61#define readw(addr)\ 62 ({unsigned short val;\ 63 asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) 64#define readl(addr)\ 65 ({unsigned long val;\ 66 asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;}) 67 68#define writeb(val,addr)\ 69 asm volatile ("stbio %0, 0(%1)" : : "r" (val), "r" (addr)) 70#define writew(val,addr)\ 71 asm volatile ("sthio %0, 0(%1)" : : "r" (val), "r" (addr)) 72#define writel(val,addr)\ 73 asm volatile ("stwio %0, 0(%1)" : : "r" (val), "r" (addr)) 74 75#define inb(addr) readb(addr) 76#define inw(addr) readw(addr) 77#define inl(addr) readl(addr) 78#define outb(val, addr) writeb(val,addr) 79#define outw(val, addr) writew(val,addr) 80#define outl(val, addr) writel(val,addr) 81 82static inline void insb (unsigned long port, void *dst, unsigned long count) 83{ 84 unsigned char *p = dst; 85 while (count--) *p++ = inb (port); 86} 87static inline void insw (unsigned long port, void *dst, unsigned long count) 88{ 89 unsigned short *p = dst; 90 while (count--) *p++ = inw (port); 91} 92static inline void insl (unsigned long port, void *dst, unsigned long count) 93{ 94 unsigned long *p = dst; 95 while (count--) *p++ = inl (port); 96} 97#define insb insb 98#define insw insw 99#define insl insl 100 101static inline void outsb (unsigned long port, const void *src, unsigned long count) 102{ 103 const unsigned char *p = src; 104 while (count--) outb (*p++, port); 105} 106 107static inline void outsw (unsigned long port, const void *src, unsigned long count) 108{ 109 const unsigned short *p = src; 110 while (count--) outw (*p++, port); 111} 112static inline void outsl (unsigned long port, const void *src, unsigned long count) 113{ 114 const unsigned long *p = src; 115 while (count--) outl (*p++, port); 116} 117#define outsb outsb 118#define outsw outsw 119#define outsl outsl 120 121/* 122 * Clear and set bits in one shot. These macros can be used to clear and 123 * set multiple bits in a register using a single call. These macros can 124 * also be used to set a multiple-bit bit pattern using a mask, by 125 * specifying the mask in the 'clear' parameter and the new bit pattern 126 * in the 'set' parameter. 127 */ 128 129#define out_arch(type,endian,a,v) __raw_write##type(cpu_to_##endian(v),a) 130#define in_arch(type,endian,a) endian##_to_cpu(__raw_read##type(a)) 131 132#define out_le32(a,v) out_arch(l,le32,a,v) 133#define out_le16(a,v) out_arch(w,le16,a,v) 134 135#define in_le32(a) in_arch(l,le32,a) 136#define in_le16(a) in_arch(w,le16,a) 137 138#define out_be32(a,v) out_arch(l,be32,a,v) 139#define out_be16(a,v) out_arch(w,be16,a,v) 140 141#define in_be32(a) in_arch(l,be32,a) 142#define in_be16(a) in_arch(w,be16,a) 143 144#define out_8(a,v) __raw_writeb(v,a) 145#define in_8(a) __raw_readb(a) 146 147#define clrbits(type, addr, clear) \ 148 out_##type((addr), in_##type(addr) & ~(clear)) 149 150#define setbits(type, addr, set) \ 151 out_##type((addr), in_##type(addr) | (set)) 152 153#define clrsetbits(type, addr, clear, set) \ 154 out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) 155 156#define clrbits_be32(addr, clear) clrbits(be32, addr, clear) 157#define setbits_be32(addr, set) setbits(be32, addr, set) 158#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) 159 160#define clrbits_le32(addr, clear) clrbits(le32, addr, clear) 161#define setbits_le32(addr, set) setbits(le32, addr, set) 162#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) 163 164#define clrbits_be16(addr, clear) clrbits(be16, addr, clear) 165#define setbits_be16(addr, set) setbits(be16, addr, set) 166#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) 167 168#define clrbits_le16(addr, clear) clrbits(le16, addr, clear) 169#define setbits_le16(addr, set) setbits(le16, addr, set) 170#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) 171 172#define clrbits_8(addr, clear) clrbits(8, addr, clear) 173#define setbits_8(addr, set) setbits(8, addr, set) 174#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) 175 176#define memset_io(a, b, c) memset((void *)(a), (b), (c)) 177#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c)) 178#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c)) 179 180#include <asm-generic/io.h> 181#include <asm/global_data.h> 182 183#endif /* __ASM_NIOS2_IO_H_ */ 184