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
sync(void)12 static 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
24 static inline void *
map_physmem(phys_addr_t paddr,unsigned long len,unsigned long flags)25 map_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
phys_to_virt(phys_addr_t paddr)35 static 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
virt_to_phys(void * vaddr)43 static 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
insb(unsigned long port,void * dst,unsigned long count)82 static inline void insb (unsigned long port, void *dst, unsigned long count)
83 {
84 unsigned char *p = dst;
85 while (count--) *p++ = inb (port);
86 }
insw(unsigned long port,void * dst,unsigned long count)87 static inline void insw (unsigned long port, void *dst, unsigned long count)
88 {
89 unsigned short *p = dst;
90 while (count--) *p++ = inw (port);
91 }
insl(unsigned long port,void * dst,unsigned long count)92 static 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
outsb(unsigned long port,const void * src,unsigned long count)98 static inline void outsb (unsigned long port, const void *src, unsigned long count)
99 {
100 const unsigned char *p = src;
101 while (count--) outb (*p++, port);
102 }
103
outsw(unsigned long port,const void * src,unsigned long count)104 static inline void outsw (unsigned long port, const void *src, unsigned long count)
105 {
106 const unsigned short *p = src;
107 while (count--) outw (*p++, port);
108 }
outsl(unsigned long port,const void * src,unsigned long count)109 static inline void outsl (unsigned long port, const void *src, unsigned long count)
110 {
111 const unsigned long *p = src;
112 while (count--) outl (*p++, port);
113 }
114
115 /*
116 * Clear and set bits in one shot. These macros can be used to clear and
117 * set multiple bits in a register using a single call. These macros can
118 * also be used to set a multiple-bit bit pattern using a mask, by
119 * specifying the mask in the 'clear' parameter and the new bit pattern
120 * in the 'set' parameter.
121 */
122
123 #define out_arch(type,endian,a,v) __raw_write##type(cpu_to_##endian(v),a)
124 #define in_arch(type,endian,a) endian##_to_cpu(__raw_read##type(a))
125
126 #define out_le32(a,v) out_arch(l,le32,a,v)
127 #define out_le16(a,v) out_arch(w,le16,a,v)
128
129 #define in_le32(a) in_arch(l,le32,a)
130 #define in_le16(a) in_arch(w,le16,a)
131
132 #define out_be32(a,v) out_arch(l,be32,a,v)
133 #define out_be16(a,v) out_arch(w,be16,a,v)
134
135 #define in_be32(a) in_arch(l,be32,a)
136 #define in_be16(a) in_arch(w,be16,a)
137
138 #define out_8(a,v) __raw_writeb(v,a)
139 #define in_8(a) __raw_readb(a)
140
141 #define clrbits(type, addr, clear) \
142 out_##type((addr), in_##type(addr) & ~(clear))
143
144 #define setbits(type, addr, set) \
145 out_##type((addr), in_##type(addr) | (set))
146
147 #define clrsetbits(type, addr, clear, set) \
148 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
149
150 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
151 #define setbits_be32(addr, set) setbits(be32, addr, set)
152 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
153
154 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
155 #define setbits_le32(addr, set) setbits(le32, addr, set)
156 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
157
158 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
159 #define setbits_be16(addr, set) setbits(be16, addr, set)
160 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
161
162 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
163 #define setbits_le16(addr, set) setbits(le16, addr, set)
164 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
165
166 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
167 #define setbits_8(addr, set) setbits(8, addr, set)
168 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
169
170 #define memset_io(a, b, c) memset((void *)(a), (b), (c))
171 #define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
172 #define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
173
174 #include <asm-generic/io.h>
175 #include <asm/global_data.h>
176
177 #endif /* __ASM_NIOS2_IO_H_ */
178