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".
22 #define MAP_WRCOMBINE 0
24 #define MAP_WRTHROUGH 0
27 map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
29 DECLARE_GLOBAL_DATA_PTR;
31 return (void *)(paddr | gd->arch.io_region_base);
33 return (void *)(paddr | gd->arch.mem_region_base);
37 * Take down a mapping set up by map_physmem().
39 static inline void unmap_physmem(void *vaddr, unsigned long flags)
44 static inline phys_addr_t virt_to_phys(void * vaddr)
46 DECLARE_GLOBAL_DATA_PTR;
47 return (phys_addr_t)vaddr & gd->arch.physaddr_mask;
50 static inline void *ioremap(unsigned long physaddr, unsigned long size)
52 DECLARE_GLOBAL_DATA_PTR;
53 return (void *)(gd->arch.io_region_base | physaddr);
56 #define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v))
57 #define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
58 #define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
60 #define __raw_readb(a) (*(volatile unsigned char *)(a))
61 #define __raw_readw(a) (*(volatile unsigned short *)(a))
62 #define __raw_readl(a) (*(volatile unsigned int *)(a))
66 asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
68 ({unsigned short val;\
69 asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
72 asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
74 #define writeb(val,addr)\
75 asm volatile ("stbio %0, 0(%1)" : : "r" (val), "r" (addr))
76 #define writew(val,addr)\
77 asm volatile ("sthio %0, 0(%1)" : : "r" (val), "r" (addr))
78 #define writel(val,addr)\
79 asm volatile ("stwio %0, 0(%1)" : : "r" (val), "r" (addr))
81 #define inb(addr) readb(addr)
82 #define inw(addr) readw(addr)
83 #define inl(addr) readl(addr)
84 #define outb(val, addr) writeb(val,addr)
85 #define outw(val, addr) writew(val,addr)
86 #define outl(val, addr) writel(val,addr)
88 static inline void insb (unsigned long port, void *dst, unsigned long count)
90 unsigned char *p = dst;
91 while (count--) *p++ = inb (port);
93 static inline void insw (unsigned long port, void *dst, unsigned long count)
95 unsigned short *p = dst;
96 while (count--) *p++ = inw (port);
98 static inline void insl (unsigned long port, void *dst, unsigned long count)
100 unsigned long *p = dst;
101 while (count--) *p++ = inl (port);
104 static inline void outsb (unsigned long port, const void *src, unsigned long count)
106 const unsigned char *p = src;
107 while (count--) outb (*p++, port);
110 static inline void outsw (unsigned long port, const void *src, unsigned long count)
112 const unsigned short *p = src;
113 while (count--) outw (*p++, port);
115 static inline void outsl (unsigned long port, const void *src, unsigned long count)
117 const unsigned long *p = src;
118 while (count--) outl (*p++, port);
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.
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))
132 #define out_le32(a,v) out_arch(l,le32,a,v)
133 #define out_le16(a,v) out_arch(w,le16,a,v)
135 #define in_le32(a) in_arch(l,le32,a)
136 #define in_le16(a) in_arch(w,le16,a)
138 #define out_be32(a,v) out_arch(l,be32,a,v)
139 #define out_be16(a,v) out_arch(w,be16,a,v)
141 #define in_be32(a) in_arch(l,be32,a)
142 #define in_be16(a) in_arch(w,be16,a)
144 #define out_8(a,v) __raw_writeb(v,a)
145 #define in_8(a) __raw_readb(a)
147 #define clrbits(type, addr, clear) \
148 out_##type((addr), in_##type(addr) & ~(clear))
150 #define setbits(type, addr, set) \
151 out_##type((addr), in_##type(addr) | (set))
153 #define clrsetbits(type, addr, clear, set) \
154 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
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)
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)
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)
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)
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)
176 #endif /* __ASM_NIOS2_IO_H_ */