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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __SPARC_IO_H
3#define __SPARC_IO_H
4
5#include <linux/kernel.h>
6#include <linux/ioport.h> /* struct resource */
7
8#define IO_SPACE_LIMIT 0xffffffff
9
10#define memset_io(d,c,sz) _memset_io(d,c,sz)
11#define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
12#define memcpy_toio(d,s,sz) _memcpy_toio(d,s,sz)
13
14#include <asm-generic/io.h>
15
16static inline void _memset_io(volatile void __iomem *dst,
17 int c, __kernel_size_t n)
18{
19 volatile void __iomem *d = dst;
20
21 while (n--) {
22 writeb(c, d);
23 d++;
24 }
25}
26
27static inline void _memcpy_fromio(void *dst, const volatile void __iomem *src,
28 __kernel_size_t n)
29{
30 char *d = dst;
31
32 while (n--) {
33 char tmp = readb(src);
34 *d++ = tmp;
35 src++;
36 }
37}
38
39static inline void _memcpy_toio(volatile void __iomem *dst, const void *src,
40 __kernel_size_t n)
41{
42 const char *s = src;
43 volatile void __iomem *d = dst;
44
45 while (n--) {
46 char tmp = *s++;
47 writeb(tmp, d);
48 d++;
49 }
50}
51
52/*
53 * SBus accessors.
54 *
55 * SBus has only one, memory mapped, I/O space.
56 * We do not need to flip bytes for SBus of course.
57 */
58static inline u8 sbus_readb(const volatile void __iomem *addr)
59{
60 return *(__force volatile u8 *)addr;
61}
62
63static inline u16 sbus_readw(const volatile void __iomem *addr)
64{
65 return *(__force volatile u16 *)addr;
66}
67
68static inline u32 sbus_readl(const volatile void __iomem *addr)
69{
70 return *(__force volatile u32 *)addr;
71}
72
73static inline void sbus_writeb(u8 b, volatile void __iomem *addr)
74{
75 *(__force volatile u8 *)addr = b;
76}
77
78static inline void sbus_writew(u16 w, volatile void __iomem *addr)
79{
80 *(__force volatile u16 *)addr = w;
81}
82
83static inline void sbus_writel(u32 l, volatile void __iomem *addr)
84{
85 *(__force volatile u32 *)addr = l;
86}
87
88static inline void sbus_memset_io(volatile void __iomem *__dst, int c,
89 __kernel_size_t n)
90{
91 while(n--) {
92 sbus_writeb(c, __dst);
93 __dst++;
94 }
95}
96
97static inline void sbus_memcpy_fromio(void *dst,
98 const volatile void __iomem *src,
99 __kernel_size_t n)
100{
101 char *d = dst;
102
103 while (n--) {
104 char tmp = sbus_readb(src);
105 *d++ = tmp;
106 src++;
107 }
108}
109
110static inline void sbus_memcpy_toio(volatile void __iomem *dst,
111 const void *src,
112 __kernel_size_t n)
113{
114 const char *s = src;
115 volatile void __iomem *d = dst;
116
117 while (n--) {
118 char tmp = *s++;
119 sbus_writeb(tmp, d);
120 d++;
121 }
122}
123
124#ifdef __KERNEL__
125
126/*
127 * Bus number may be embedded in the higher bits of the physical address.
128 * This is why we have no bus number argument to ioremap().
129 */
130void iounmap(volatile void __iomem *addr);
131/* Create a virtual mapping cookie for an IO port range */
132void __iomem *ioport_map(unsigned long port, unsigned int nr);
133void ioport_unmap(void __iomem *);
134
135/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
136struct pci_dev;
137void pci_iounmap(struct pci_dev *dev, void __iomem *);
138
139static inline int sbus_can_dma_64bit(void)
140{
141 return 0; /* actually, sparc_cpu_model==sun4d */
142}
143static inline int sbus_can_burst64(void)
144{
145 return 0; /* actually, sparc_cpu_model==sun4d */
146}
147struct device;
148void sbus_set_sbus64(struct device *, int);
149
150#endif
151
152#define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
153
154
155#endif /* !(__SPARC_IO_H) */
1#ifndef __SPARC_IO_H
2#define __SPARC_IO_H
3
4#include <linux/kernel.h>
5#include <linux/ioport.h> /* struct resource */
6
7#define IO_SPACE_LIMIT 0xffffffff
8
9#define memset_io(d,c,sz) _memset_io(d,c,sz)
10#define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
11#define memcpy_toio(d,s,sz) _memcpy_toio(d,s,sz)
12
13#include <asm-generic/io.h>
14
15static inline void _memset_io(volatile void __iomem *dst,
16 int c, __kernel_size_t n)
17{
18 volatile void __iomem *d = dst;
19
20 while (n--) {
21 writeb(c, d);
22 d++;
23 }
24}
25
26static inline void _memcpy_fromio(void *dst, const volatile void __iomem *src,
27 __kernel_size_t n)
28{
29 char *d = dst;
30
31 while (n--) {
32 char tmp = readb(src);
33 *d++ = tmp;
34 src++;
35 }
36}
37
38static inline void _memcpy_toio(volatile void __iomem *dst, const void *src,
39 __kernel_size_t n)
40{
41 const char *s = src;
42 volatile void __iomem *d = dst;
43
44 while (n--) {
45 char tmp = *s++;
46 writeb(tmp, d);
47 d++;
48 }
49}
50
51/*
52 * SBus accessors.
53 *
54 * SBus has only one, memory mapped, I/O space.
55 * We do not need to flip bytes for SBus of course.
56 */
57static inline u8 sbus_readb(const volatile void __iomem *addr)
58{
59 return *(__force volatile u8 *)addr;
60}
61
62static inline u16 sbus_readw(const volatile void __iomem *addr)
63{
64 return *(__force volatile u16 *)addr;
65}
66
67static inline u32 sbus_readl(const volatile void __iomem *addr)
68{
69 return *(__force volatile u32 *)addr;
70}
71
72static inline void sbus_writeb(u8 b, volatile void __iomem *addr)
73{
74 *(__force volatile u8 *)addr = b;
75}
76
77static inline void sbus_writew(u16 w, volatile void __iomem *addr)
78{
79 *(__force volatile u16 *)addr = w;
80}
81
82static inline void sbus_writel(u32 l, volatile void __iomem *addr)
83{
84 *(__force volatile u32 *)addr = l;
85}
86
87static inline void sbus_memset_io(volatile void __iomem *__dst, int c,
88 __kernel_size_t n)
89{
90 while(n--) {
91 sbus_writeb(c, __dst);
92 __dst++;
93 }
94}
95
96static inline void sbus_memcpy_fromio(void *dst,
97 const volatile void __iomem *src,
98 __kernel_size_t n)
99{
100 char *d = dst;
101
102 while (n--) {
103 char tmp = sbus_readb(src);
104 *d++ = tmp;
105 src++;
106 }
107}
108
109static inline void sbus_memcpy_toio(volatile void __iomem *dst,
110 const void *src,
111 __kernel_size_t n)
112{
113 const char *s = src;
114 volatile void __iomem *d = dst;
115
116 while (n--) {
117 char tmp = *s++;
118 sbus_writeb(tmp, d);
119 d++;
120 }
121}
122
123#ifdef __KERNEL__
124
125/*
126 * Bus number may be embedded in the higher bits of the physical address.
127 * This is why we have no bus number argument to ioremap().
128 */
129void __iomem *ioremap(unsigned long offset, unsigned long size);
130#define ioremap_nocache(X,Y) ioremap((X),(Y))
131#define ioremap_wc(X,Y) ioremap((X),(Y))
132#define ioremap_wt(X,Y) ioremap((X),(Y))
133void iounmap(volatile void __iomem *addr);
134
135/* Create a virtual mapping cookie for an IO port range */
136void __iomem *ioport_map(unsigned long port, unsigned int nr);
137void ioport_unmap(void __iomem *);
138
139/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
140struct pci_dev;
141void pci_iounmap(struct pci_dev *dev, void __iomem *);
142
143
144
145/*
146 * At the moment, we do not use CMOS_READ anywhere outside of rtc.c,
147 * so rtc_port is static in it. This should not change unless a new
148 * hardware pops up.
149 */
150#define RTC_PORT(x) (rtc_port + (x))
151#define RTC_ALWAYS_BCD 0
152
153static inline int sbus_can_dma_64bit(void)
154{
155 return 0; /* actually, sparc_cpu_model==sun4d */
156}
157static inline int sbus_can_burst64(void)
158{
159 return 0; /* actually, sparc_cpu_model==sun4d */
160}
161struct device;
162void sbus_set_sbus64(struct device *, int);
163
164#endif
165
166#define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
167
168
169#endif /* !(__SPARC_IO_H) */