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