1*83d290c5STom Rini /* SPDX-License-Identifier: GPL-2.0+ */
2819833afSPeter Tyser /*
3819833afSPeter Tyser * IO header file
4819833afSPeter Tyser *
533d44119SAlison Wang * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
6819833afSPeter Tyser * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
7819833afSPeter Tyser */
8819833afSPeter Tyser
9819833afSPeter Tyser #ifndef __ASM_M68K_IO_H__
10819833afSPeter Tyser #define __ASM_M68K_IO_H__
11819833afSPeter Tyser
12819833afSPeter Tyser #include <asm/byteorder.h>
13819833afSPeter Tyser
14819833afSPeter Tyser #ifndef _IO_BASE
15819833afSPeter Tyser #define _IO_BASE 0
16819833afSPeter Tyser #endif
17819833afSPeter Tyser
18819833afSPeter Tyser #define __raw_readb(addr) (*(volatile u8 *)(addr))
19819833afSPeter Tyser #define __raw_readw(addr) (*(volatile u16 *)(addr))
20819833afSPeter Tyser #define __raw_readl(addr) (*(volatile u32 *)(addr))
21819833afSPeter Tyser
22819833afSPeter Tyser #define __raw_writeb(b,addr) ((*(volatile u8 *) (addr)) = (b))
23819833afSPeter Tyser #define __raw_writew(w,addr) ((*(volatile u16 *) (addr)) = (w))
24819833afSPeter Tyser #define __raw_writel(l,addr) ((*(volatile u32 *) (addr)) = (l))
25819833afSPeter Tyser
26819833afSPeter Tyser #define readb(addr) in_8((volatile u8 *)(addr))
27819833afSPeter Tyser #define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
28819833afSPeter Tyser #if !defined(__BIG_ENDIAN)
29819833afSPeter Tyser #define readw(addr) (*(volatile u16 *) (addr))
30819833afSPeter Tyser #define readl(addr) (*(volatile u32 *) (addr))
31819833afSPeter Tyser #define writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
32819833afSPeter Tyser #define writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
33819833afSPeter Tyser #else
34f1329c90SChao Fu #define readw(addr) in_be16((volatile u16 *)(addr))
35f1329c90SChao Fu #define readl(addr) in_be32((volatile u32 *)(addr))
36f1329c90SChao Fu #define writew(b,addr) out_be16((volatile u16 *)(addr),(b))
37f1329c90SChao Fu #define writel(b,addr) out_be32((volatile u32 *)(addr),(b))
38819833afSPeter Tyser #endif
39819833afSPeter Tyser
40819833afSPeter Tyser /*
41819833afSPeter Tyser * The insw/outsw/insl/outsl macros don't do byte-swapping.
42819833afSPeter Tyser * They are only used in practice for transferring buffers which
43819833afSPeter Tyser * are arrays of bytes, and byte-swapping is not appropriate in
44819833afSPeter Tyser * that case. - paulus
45819833afSPeter Tyser */
46819833afSPeter Tyser #define insb(port, buf, ns) _insb((u8 *)((port)+_IO_BASE), (buf), (ns))
47819833afSPeter Tyser #define outsb(port, buf, ns) _outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
48819833afSPeter Tyser #define insw(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
49819833afSPeter Tyser #define outsw(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
50819833afSPeter Tyser #define insl(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
51819833afSPeter Tyser #define outsl(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
52819833afSPeter Tyser
53819833afSPeter Tyser #define inb(port) in_8((u8 *)((port)+_IO_BASE))
54819833afSPeter Tyser #define outb(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
55819833afSPeter Tyser #if !defined(__BIG_ENDIAN)
56819833afSPeter Tyser #define inw(port) in_be16((u16 *)((port)+_IO_BASE))
57819833afSPeter Tyser #define outw(val, port) out_be16((u16 *)((port)+_IO_BASE), (val))
58819833afSPeter Tyser #define inl(port) in_be32((u32 *)((port)+_IO_BASE))
59819833afSPeter Tyser #define outl(val, port) out_be32((u32 *)((port)+_IO_BASE), (val))
60819833afSPeter Tyser #else
61819833afSPeter Tyser #define inw(port) in_le16((u16 *)((port)+_IO_BASE))
62819833afSPeter Tyser #define outw(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
63819833afSPeter Tyser #define inl(port) in_le32((u32 *)((port)+_IO_BASE))
64819833afSPeter Tyser #define outl(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
65819833afSPeter Tyser #endif
66819833afSPeter Tyser
676752da6bSJason Jin #define mb() __asm__ __volatile__ ("" : : : "memory")
686752da6bSJason Jin
_insb(volatile u8 * port,void * buf,int ns)6944d0677aSMåns Rullgård static inline void _insb(volatile u8 * port, void *buf, int ns)
70819833afSPeter Tyser {
71819833afSPeter Tyser u8 *data = (u8 *) buf;
72819833afSPeter Tyser while (ns--)
73819833afSPeter Tyser *data++ = *port;
74819833afSPeter Tyser }
75819833afSPeter Tyser
_outsb(volatile u8 * port,const void * buf,int ns)7644d0677aSMåns Rullgård static inline void _outsb(volatile u8 * port, const void *buf, int ns)
77819833afSPeter Tyser {
78819833afSPeter Tyser u8 *data = (u8 *) buf;
79819833afSPeter Tyser while (ns--)
80819833afSPeter Tyser *port = *data++;
81819833afSPeter Tyser }
82819833afSPeter Tyser
_insw(volatile u16 * port,void * buf,int ns)8344d0677aSMåns Rullgård static inline void _insw(volatile u16 * port, void *buf, int ns)
84819833afSPeter Tyser {
85819833afSPeter Tyser u16 *data = (u16 *) buf;
86819833afSPeter Tyser while (ns--)
87819833afSPeter Tyser *data++ = __sw16(*port);
88819833afSPeter Tyser }
89819833afSPeter Tyser
_outsw(volatile u16 * port,const void * buf,int ns)9044d0677aSMåns Rullgård static inline void _outsw(volatile u16 * port, const void *buf, int ns)
91819833afSPeter Tyser {
92819833afSPeter Tyser u16 *data = (u16 *) buf;
93819833afSPeter Tyser while (ns--) {
94819833afSPeter Tyser *port = __sw16(*data);
95819833afSPeter Tyser data++;
96819833afSPeter Tyser }
97819833afSPeter Tyser }
98819833afSPeter Tyser
_insl(volatile u32 * port,void * buf,int nl)9944d0677aSMåns Rullgård static inline void _insl(volatile u32 * port, void *buf, int nl)
100819833afSPeter Tyser {
101819833afSPeter Tyser u32 *data = (u32 *) buf;
102819833afSPeter Tyser while (nl--)
103819833afSPeter Tyser *data++ = __sw32(*port);
104819833afSPeter Tyser }
105819833afSPeter Tyser
_outsl(volatile u32 * port,const void * buf,int nl)10644d0677aSMåns Rullgård static inline void _outsl(volatile u32 * port, const void *buf, int nl)
107819833afSPeter Tyser {
108819833afSPeter Tyser u32 *data = (u32 *) buf;
109819833afSPeter Tyser while (nl--) {
110819833afSPeter Tyser *port = __sw32(*data);
111819833afSPeter Tyser data++;
112819833afSPeter Tyser }
113819833afSPeter Tyser }
114819833afSPeter Tyser
_insw_ns(volatile u16 * port,void * buf,int ns)11544d0677aSMåns Rullgård static inline void _insw_ns(volatile u16 * port, void *buf, int ns)
116819833afSPeter Tyser {
117819833afSPeter Tyser u16 *data = (u16 *) buf;
118819833afSPeter Tyser while (ns--)
119819833afSPeter Tyser *data++ = *port;
120819833afSPeter Tyser }
121819833afSPeter Tyser
_outsw_ns(volatile u16 * port,const void * buf,int ns)12244d0677aSMåns Rullgård static inline void _outsw_ns(volatile u16 * port, const void *buf, int ns)
123819833afSPeter Tyser {
124819833afSPeter Tyser u16 *data = (u16 *) buf;
125819833afSPeter Tyser while (ns--) {
126819833afSPeter Tyser *port = *data++;
127819833afSPeter Tyser }
128819833afSPeter Tyser }
129819833afSPeter Tyser
_insl_ns(volatile u32 * port,void * buf,int nl)13044d0677aSMåns Rullgård static inline void _insl_ns(volatile u32 * port, void *buf, int nl)
131819833afSPeter Tyser {
132819833afSPeter Tyser u32 *data = (u32 *) buf;
133819833afSPeter Tyser while (nl--)
134819833afSPeter Tyser *data++ = *port;
135819833afSPeter Tyser }
136819833afSPeter Tyser
_outsl_ns(volatile u32 * port,const void * buf,int nl)13744d0677aSMåns Rullgård static inline void _outsl_ns(volatile u32 * port, const void *buf, int nl)
138819833afSPeter Tyser {
139819833afSPeter Tyser u32 *data = (u32 *) buf;
140819833afSPeter Tyser while (nl--) {
141819833afSPeter Tyser *port = *data;
142819833afSPeter Tyser data++;
143819833afSPeter Tyser }
144819833afSPeter Tyser }
145819833afSPeter Tyser
146819833afSPeter Tyser /*
147819833afSPeter Tyser * The *_ns versions below don't do byte-swapping.
148819833afSPeter Tyser * Neither do the standard versions now, these are just here
149819833afSPeter Tyser * for older code.
150819833afSPeter Tyser */
151819833afSPeter Tyser #define insw_ns(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
152819833afSPeter Tyser #define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
153819833afSPeter Tyser #define insl_ns(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
154819833afSPeter Tyser #define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
155819833afSPeter Tyser
156819833afSPeter Tyser #define IO_SPACE_LIMIT ~0
157819833afSPeter Tyser
158819833afSPeter Tyser /*
159819833afSPeter Tyser * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
160819833afSPeter Tyser */
in_8(volatile u8 * addr)16144d0677aSMåns Rullgård static inline int in_8(volatile u8 * addr)
162819833afSPeter Tyser {
163819833afSPeter Tyser return (int)*addr;
164819833afSPeter Tyser }
165819833afSPeter Tyser
out_8(volatile u8 * addr,int val)16644d0677aSMåns Rullgård static inline void out_8(volatile u8 * addr, int val)
167819833afSPeter Tyser {
168819833afSPeter Tyser *addr = (u8) val;
169819833afSPeter Tyser }
170819833afSPeter Tyser
in_le16(volatile u16 * addr)17144d0677aSMåns Rullgård static inline int in_le16(volatile u16 * addr)
172819833afSPeter Tyser {
173819833afSPeter Tyser return __sw16(*addr);
174819833afSPeter Tyser }
175819833afSPeter Tyser
in_be16(volatile u16 * addr)17644d0677aSMåns Rullgård static inline int in_be16(volatile u16 * addr)
177819833afSPeter Tyser {
178819833afSPeter Tyser return (*addr & 0xFFFF);
179819833afSPeter Tyser }
180819833afSPeter Tyser
out_le16(volatile u16 * addr,int val)18144d0677aSMåns Rullgård static inline void out_le16(volatile u16 * addr, int val)
182819833afSPeter Tyser {
183819833afSPeter Tyser *addr = __sw16(val);
184819833afSPeter Tyser }
185819833afSPeter Tyser
out_be16(volatile u16 * addr,int val)18644d0677aSMåns Rullgård static inline void out_be16(volatile u16 * addr, int val)
187819833afSPeter Tyser {
188819833afSPeter Tyser *addr = (u16) val;
189819833afSPeter Tyser }
190819833afSPeter Tyser
in_le32(volatile u32 * addr)19144d0677aSMåns Rullgård static inline unsigned in_le32(volatile u32 * addr)
192819833afSPeter Tyser {
193819833afSPeter Tyser return __sw32(*addr);
194819833afSPeter Tyser }
195819833afSPeter Tyser
in_be32(volatile u32 * addr)19644d0677aSMåns Rullgård static inline unsigned in_be32(volatile u32 * addr)
197819833afSPeter Tyser {
198819833afSPeter Tyser return (*addr);
199819833afSPeter Tyser }
200819833afSPeter Tyser
out_le32(volatile unsigned * addr,int val)20144d0677aSMåns Rullgård static inline void out_le32(volatile unsigned *addr, int val)
202819833afSPeter Tyser {
203819833afSPeter Tyser *addr = __sw32(val);
204819833afSPeter Tyser }
205819833afSPeter Tyser
out_be32(volatile unsigned * addr,int val)20644d0677aSMåns Rullgård static inline void out_be32(volatile unsigned *addr, int val)
207819833afSPeter Tyser {
208819833afSPeter Tyser *addr = val;
209819833afSPeter Tyser }
210819833afSPeter Tyser
21133d44119SAlison Wang /* Clear and set bits in one shot. These macros can be used to clear and
21233d44119SAlison Wang * set multiple bits in a register using a single call. These macros can
21333d44119SAlison Wang * also be used to set a multiple-bit bit pattern using a mask, by
21433d44119SAlison Wang * specifying the mask in the 'clear' parameter and the new bit pattern
21533d44119SAlison Wang * in the 'set' parameter.
21633d44119SAlison Wang */
21733d44119SAlison Wang
21833d44119SAlison Wang #define clrbits(type, addr, clear) \
21933d44119SAlison Wang out_##type((addr), in_##type(addr) & ~(clear))
22033d44119SAlison Wang
22133d44119SAlison Wang #define setbits(type, addr, set) \
22233d44119SAlison Wang out_##type((addr), in_##type(addr) | (set))
22333d44119SAlison Wang
22433d44119SAlison Wang #define clrsetbits(type, addr, clear, set) \
22533d44119SAlison Wang out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
22633d44119SAlison Wang
22733d44119SAlison Wang #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
22833d44119SAlison Wang #define setbits_be32(addr, set) setbits(be32, addr, set)
22933d44119SAlison Wang #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
23033d44119SAlison Wang
23133d44119SAlison Wang #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
23233d44119SAlison Wang #define setbits_le32(addr, set) setbits(le32, addr, set)
23333d44119SAlison Wang #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
23433d44119SAlison Wang
23533d44119SAlison Wang #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
23633d44119SAlison Wang #define setbits_be16(addr, set) setbits(be16, addr, set)
23733d44119SAlison Wang #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
23833d44119SAlison Wang
23933d44119SAlison Wang #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
24033d44119SAlison Wang #define setbits_le16(addr, set) setbits(le16, addr, set)
24133d44119SAlison Wang #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
24233d44119SAlison Wang
24333d44119SAlison Wang #define clrbits_8(addr, clear) clrbits(8, addr, clear)
24433d44119SAlison Wang #define setbits_8(addr, set) setbits(8, addr, set)
24533d44119SAlison Wang #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
24633d44119SAlison Wang
sync(void)247819833afSPeter Tyser static inline void sync(void)
248819833afSPeter Tyser {
249819833afSPeter Tyser /* This sync function is for PowerPC or other architecture instruction
250819833afSPeter Tyser * ColdFire does not have this instruction. Dummy function, added for
251819833afSPeter Tyser * compatibility (CFI driver)
252819833afSPeter Tyser */
253819833afSPeter Tyser }
254819833afSPeter Tyser
2550884077bSPaul Burton #include <asm-generic/io.h>
256819833afSPeter Tyser
257819833afSPeter Tyser #endif /* __ASM_M68K_IO_H__ */
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