2 * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
4 * SPDX-License-Identifier: GPL-2.0+
10 #include <linux/types.h>
11 #include <asm/byteorder.h>
13 static inline void sync(void)
15 /* Not yet implemented */
18 static inline u8 __raw_readb(const volatile void __iomem *addr)
22 __asm__ __volatile__("ldb%U1 %0, %1\n"
24 : "m" (*(volatile u8 __force *)addr)
29 static inline u16 __raw_readw(const volatile void __iomem *addr)
33 __asm__ __volatile__("ldw%U1 %0, %1\n"
35 : "m" (*(volatile u16 __force *)addr)
40 static inline u32 __raw_readl(const volatile void __iomem *addr)
44 __asm__ __volatile__("ld%U1 %0, %1\n"
46 : "m" (*(volatile u32 __force *)addr)
51 #define readb __raw_readb
53 static inline u16 readw(const volatile void __iomem *addr)
55 return __le16_to_cpu(__raw_readw(addr));
58 static inline u32 readl(const volatile void __iomem *addr)
60 return __le32_to_cpu(__raw_readl(addr));
63 static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
65 __asm__ __volatile__("stb%U1 %0, %1\n"
67 : "r" (b), "m" (*(volatile u8 __force *)addr)
71 static inline void __raw_writew(u16 s, volatile void __iomem *addr)
73 __asm__ __volatile__("stw%U1 %0, %1\n"
75 : "r" (s), "m" (*(volatile u16 __force *)addr)
79 static inline void __raw_writel(u32 w, volatile void __iomem *addr)
81 __asm__ __volatile__("st%U1 %0, %1\n"
83 : "r" (w), "m" (*(volatile u32 __force *)addr)
87 #define writeb __raw_writeb
88 #define writew(b, addr) __raw_writew(__cpu_to_le16(b), addr)
89 #define writel(b, addr) __raw_writel(__cpu_to_le32(b), addr)
91 static inline int __raw_readsb(unsigned int addr, void *data, int bytelen)
93 __asm__ __volatile__ ("1:ld.di r8, [r0]\n"
96 "stb.ab r8, [r1, 1]\n"
98 : "r" (addr), "r" (data), "r" (bytelen)
103 static inline int __raw_readsw(unsigned int addr, void *data, int wordlen)
105 __asm__ __volatile__ ("1:ld.di r8, [r0]\n"
108 "stw.ab r8, [r1, 2]\n"
110 : "r" (addr), "r" (data), "r" (wordlen)
115 static inline int __raw_readsl(unsigned int addr, void *data, int longlen)
117 __asm__ __volatile__ ("1:ld.di r8, [r0]\n"
120 "st.ab r8, [r1, 4]\n"
122 : "r" (addr), "r" (data), "r" (longlen)
127 static inline int __raw_writesb(unsigned int addr, void *data, int bytelen)
129 __asm__ __volatile__ ("1:ldb.ab r8, [r1, 1]\n"
132 "st.di r8, [r0, 0]\n"
134 : "r" (addr), "r" (data), "r" (bytelen)
139 static inline int __raw_writesw(unsigned int addr, void *data, int wordlen)
141 __asm__ __volatile__ ("1:ldw.ab r8, [r1, 2]\n"
144 "st.ab.di r8, [r0, 0]\n"
146 : "r" (addr), "r" (data), "r" (wordlen)
151 static inline int __raw_writesl(unsigned int addr, void *data, int longlen)
153 __asm__ __volatile__ ("1:ld.ab r8, [r1, 4]\n"
156 "st.ab.di r8, [r0, 0]\n"
158 : "r" (addr), "r" (data), "r" (longlen)
163 #define out_arch(type, endian, a, v) __raw_write##type(cpu_to_##endian(v), a)
164 #define in_arch(type, endian, a) endian##_to_cpu(__raw_read##type(a))
166 #define out_le32(a, v) out_arch(l, le32, a, v)
167 #define out_le16(a, v) out_arch(w, le16, a, v)
169 #define in_le32(a) in_arch(l, le32, a)
170 #define in_le16(a) in_arch(w, le16, a)
172 #define out_be32(a, v) out_arch(l, be32, a, v)
173 #define out_be16(a, v) out_arch(w, be16, a, v)
175 #define in_be32(a) in_arch(l, be32, a)
176 #define in_be16(a) in_arch(w, be16, a)
178 #define out_8(a, v) __raw_writeb(v, a)
179 #define in_8(a) __raw_readb(a)
182 * Clear and set bits in one shot. These macros can be used to clear and
183 * set multiple bits in a register using a single call. These macros can
184 * also be used to set a multiple-bit bit pattern using a mask, by
185 * specifying the mask in the 'clear' parameter and the new bit pattern
186 * in the 'set' parameter.
189 #define clrbits(type, addr, clear) \
190 out_##type((addr), in_##type(addr) & ~(clear))
192 #define setbits(type, addr, set) \
193 out_##type((addr), in_##type(addr) | (set))
195 #define clrsetbits(type, addr, clear, set) \
196 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
198 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
199 #define setbits_be32(addr, set) setbits(be32, addr, set)
200 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
202 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
203 #define setbits_le32(addr, set) setbits(le32, addr, set)
204 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
206 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
207 #define setbits_be16(addr, set) setbits(be16, addr, set)
208 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
210 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
211 #define setbits_le16(addr, set) setbits(le16, addr, set)
212 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
214 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
215 #define setbits_8(addr, set) setbits(8, addr, set)
216 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
218 #endif /* __ASM_ARC_IO_H */