2 * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
3 * Scott McNutt <smcnutt@psyent.com>
5 * SPDX-License-Identifier: GPL-2.0+
8 #ifndef __ASM_NIOS2_IO_H_
9 #define __ASM_NIOS2_IO_H_
11 static inline void sync(void)
13 __asm__ __volatile__ ("sync" : : : "memory");
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".
21 #define MAP_NOCACHE (0)
22 #define MAP_WRCOMBINE (0)
23 #define MAP_WRBACK (0)
24 #define MAP_WRTHROUGH (0)
27 map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
33 * Take down a mapping set up by map_physmem().
35 static inline void unmap_physmem(void *vaddr, unsigned long flags)
40 static inline phys_addr_t virt_to_phys(void * vaddr)
42 return (phys_addr_t)(vaddr);
45 static inline void *ioremap(unsigned long physaddr, unsigned long size)
47 return (void *)(IO_REGION_BASE | physaddr);
50 extern unsigned char inb (unsigned char *port);
51 extern unsigned short inw (unsigned short *port);
52 extern unsigned inl (unsigned port);
54 #define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v))
55 #define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
56 #define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
58 #define __raw_readb(a) (*(volatile unsigned char *)(a))
59 #define __raw_readw(a) (*(volatile unsigned short *)(a))
60 #define __raw_readl(a) (*(volatile unsigned int *)(a))
64 asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
66 ({unsigned short val;\
67 asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
70 asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
72 #define writeb(val,addr)\
73 asm volatile ("stbio %0, 0(%1)" : : "r" (val), "r" (addr))
74 #define writew(val,addr)\
75 asm volatile ("sthio %0, 0(%1)" : : "r" (val), "r" (addr))
76 #define writel(val,addr)\
77 asm volatile ("stwio %0, 0(%1)" : : "r" (val), "r" (addr))
79 #define inb(addr) readb(addr)
80 #define inw(addr) readw(addr)
81 #define inl(addr) readl(addr)
82 #define outb(val, addr) writeb(val,addr)
83 #define outw(val, addr) writew(val,addr)
84 #define outl(val, addr) writel(val,addr)
86 static inline void insb (unsigned long port, void *dst, unsigned long count)
88 unsigned char *p = dst;
89 while (count--) *p++ = inb (port);
91 static inline void insw (unsigned long port, void *dst, unsigned long count)
93 unsigned short *p = dst;
94 while (count--) *p++ = inw (port);
96 static inline void insl (unsigned long port, void *dst, unsigned long count)
98 unsigned long *p = dst;
99 while (count--) *p++ = inl (port);
102 static inline void outsb (unsigned long port, const void *src, unsigned long count)
104 const unsigned char *p = src;
105 while (count--) outb (*p++, port);
108 static inline void outsw (unsigned long port, const void *src, unsigned long count)
110 const unsigned short *p = src;
111 while (count--) outw (*p++, port);
113 static inline void outsl (unsigned long port, const void *src, unsigned long count)
115 const unsigned long *p = src;
116 while (count--) outl (*p++, port);
120 * Clear and set bits in one shot. These macros can be used to clear and
121 * set multiple bits in a register using a single call. These macros can
122 * also be used to set a multiple-bit bit pattern using a mask, by
123 * specifying the mask in the 'clear' parameter and the new bit pattern
124 * in the 'set' parameter.
127 #define out_arch(type,endian,a,v) __raw_write##type(cpu_to_##endian(v),a)
128 #define in_arch(type,endian,a) endian##_to_cpu(__raw_read##type(a))
130 #define out_le32(a,v) out_arch(l,le32,a,v)
131 #define out_le16(a,v) out_arch(w,le16,a,v)
133 #define in_le32(a) in_arch(l,le32,a)
134 #define in_le16(a) in_arch(w,le16,a)
136 #define out_be32(a,v) out_arch(l,be32,a,v)
137 #define out_be16(a,v) out_arch(w,be16,a,v)
139 #define in_be32(a) in_arch(l,be32,a)
140 #define in_be16(a) in_arch(w,be16,a)
142 #define out_8(a,v) __raw_writeb(v,a)
143 #define in_8(a) __raw_readb(a)
145 #define clrbits(type, addr, clear) \
146 out_##type((addr), in_##type(addr) & ~(clear))
148 #define setbits(type, addr, set) \
149 out_##type((addr), in_##type(addr) | (set))
151 #define clrsetbits(type, addr, clear, set) \
152 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
154 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
155 #define setbits_be32(addr, set) setbits(be32, addr, set)
156 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
158 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
159 #define setbits_le32(addr, set) setbits(le32, addr, set)
160 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
162 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
163 #define setbits_be16(addr, set) setbits(be16, addr, set)
164 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
166 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
167 #define setbits_le16(addr, set) setbits(le16, addr, set)
168 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
170 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
171 #define setbits_8(addr, set) setbits(8, addr, set)
172 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
174 #endif /* __ASM_NIOS2_IO_H_ */