4 #include <linux/kernel.h>
5 #include <linux/ioport.h> /* struct resource */
7 #define readb_relaxed(__addr) readb(__addr)
8 #define readw_relaxed(__addr) readw(__addr)
9 #define readl_relaxed(__addr) readl(__addr)
11 #define IO_SPACE_LIMIT 0xffffffff
13 #define memset_io(d,c,sz) _memset_io(d,c,sz)
14 #define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
15 #define memcpy_toio(d,s,sz) _memcpy_toio(d,s,sz)
17 #include <asm-generic/io.h>
19 static inline void _memset_io(volatile void __iomem *dst,
20 int c, __kernel_size_t n)
22 volatile void __iomem *d = dst;
30 static inline void _memcpy_fromio(void *dst, const volatile void __iomem *src,
36 char tmp = readb(src);
42 static inline void _memcpy_toio(volatile void __iomem *dst, const void *src,
46 volatile void __iomem *d = dst;
58 * SBus has only one, memory mapped, I/O space.
59 * We do not need to flip bytes for SBus of course.
61 static inline u8 sbus_readb(const volatile void __iomem *addr)
63 return *(__force volatile u8 *)addr;
66 static inline u16 sbus_readw(const volatile void __iomem *addr)
68 return *(__force volatile u16 *)addr;
71 static inline u32 sbus_readl(const volatile void __iomem *addr)
73 return *(__force volatile u32 *)addr;
76 static inline void sbus_writeb(u8 b, volatile void __iomem *addr)
78 *(__force volatile u8 *)addr = b;
81 static inline void sbus_writew(u16 w, volatile void __iomem *addr)
83 *(__force volatile u16 *)addr = w;
86 static inline void sbus_writel(u32 l, volatile void __iomem *addr)
88 *(__force volatile u32 *)addr = l;
91 static inline void sbus_memset_io(volatile void __iomem *__dst, int c,
95 sbus_writeb(c, __dst);
100 static inline void sbus_memcpy_fromio(void *dst,
101 const volatile void __iomem *src,
107 char tmp = sbus_readb(src);
113 static inline void sbus_memcpy_toio(volatile void __iomem *dst,
118 volatile void __iomem *d = dst;
130 * Bus number may be embedded in the higher bits of the physical address.
131 * This is why we have no bus number argument to ioremap().
133 void __iomem *ioremap(unsigned long offset, unsigned long size);
134 #define ioremap_nocache(X,Y) ioremap((X),(Y))
135 #define ioremap_wc(X,Y) ioremap((X),(Y))
136 void iounmap(volatile void __iomem *addr);
138 /* Create a virtual mapping cookie for an IO port range */
139 void __iomem *ioport_map(unsigned long port, unsigned int nr);
140 void ioport_unmap(void __iomem *);
142 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
144 void pci_iounmap(struct pci_dev *dev, void __iomem *);
149 * At the moment, we do not use CMOS_READ anywhere outside of rtc.c,
150 * so rtc_port is static in it. This should not change unless a new
153 #define RTC_PORT(x) (rtc_port + (x))
154 #define RTC_ALWAYS_BCD 0
156 static inline int sbus_can_dma_64bit(void)
158 return 0; /* actually, sparc_cpu_model==sun4d */
160 static inline int sbus_can_burst64(void)
162 return 0; /* actually, sparc_cpu_model==sun4d */
165 void sbus_set_sbus64(struct device *, int);
169 #define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
172 #endif /* !(__SPARC_IO_H) */