include/asm-sh64/io.h

   1 #ifndef __ASM_SH64_IO_H
   2 #define __ASM_SH64_IO_H
   3
   4 /*
   5  * This file is subject to the terms and conditions of the GNU General Public
   6  * License.  See the file "COPYING" in the main directory of this archive
   7  * for more details.
   8  *
   9  * include/asm-sh64/io.h
  10  *
  11  * Copyright (C) 2000, 2001  Paolo Alberelli
  12  * Copyright (C) 2003  Paul Mundt
  13  *
  14  */
  15
  16 /*
  17  * Convention:
  18  *    read{b,w,l}/write{b,w,l} are for PCI,
  19  *    while in{b,w,l}/out{b,w,l} are for ISA
  20  * These may (will) be platform specific function.
  21  *
  22  * In addition, we have
  23  *   ctrl_in{b,w,l}/ctrl_out{b,w,l} for SuperH specific I/O.
  24  * which are processor specific. Address should be the result of
  25  * onchip_remap();
  26  */
  27
  28 #include <linux/compiler.h>
  29 #include <asm/cache.h>
  30 #include <asm/system.h>
  31 #include <asm/page.h>
  32 #include <asm-generic/iomap.h>
  33
  34 /*
  35  * Nothing overly special here.. instead of doing the same thing
  36  * over and over again, we just define a set of sh64_in/out functions
  37  * with an implicit size. The traditional read{b,w,l}/write{b,w,l}
  38  * mess is wrapped to this, as are the SH-specific ctrl_in/out routines.
  39  */
  40 static inline unsigned char sh64_in8(const volatile void __iomem *addr)
  41 {
  42         return *(volatile unsigned char __force *)addr;
  43 }
  44
  45 static inline unsigned short sh64_in16(const volatile void __iomem *addr)
  46 {
  47         return *(volatile unsigned short __force *)addr;
  48 }
  49
  50 static inline unsigned int sh64_in32(const volatile void __iomem *addr)
  51 {
  52         return *(volatile unsigned int __force *)addr;
  53 }
  54
  55 static inline unsigned long long sh64_in64(const volatile void __iomem *addr)
  56 {
  57         return *(volatile unsigned long long __force *)addr;
  58 }
  59
  60 static inline void sh64_out8(unsigned char b, volatile void __iomem *addr)
  61 {
  62         *(volatile unsigned char __force *)addr = b;
  63         wmb();
  64 }
  65
  66 static inline void sh64_out16(unsigned short b, volatile void __iomem *addr)
  67 {
  68         *(volatile unsigned short __force *)addr = b;
  69         wmb();
  70 }
  71
  72 static inline void sh64_out32(unsigned int b, volatile void __iomem *addr)
  73 {
  74         *(volatile unsigned int __force *)addr = b;
  75         wmb();
  76 }
  77
  78 static inline void sh64_out64(unsigned long long b, volatile void __iomem *addr)
  79 {
  80         *(volatile unsigned long long __force *)addr = b;
  81         wmb();
  82 }
  83
  84 #define readb(addr)             sh64_in8(addr)
  85 #define readw(addr)             sh64_in16(addr)
  86 #define readl(addr)             sh64_in32(addr)
  87 #define readb_relaxed(addr)     sh64_in8(addr)
  88 #define readw_relaxed(addr)     sh64_in16(addr)
  89 #define readl_relaxed(addr)     sh64_in32(addr)
  90
  91 #define writeb(b, addr)         sh64_out8(b, addr)
  92 #define writew(b, addr)         sh64_out16(b, addr)
  93 #define writel(b, addr)         sh64_out32(b, addr)
  94
  95 #define ctrl_inb(addr)          sh64_in8(ioport_map(addr, 1))
  96 #define ctrl_inw(addr)          sh64_in16(ioport_map(addr, 2))
  97 #define ctrl_inl(addr)          sh64_in32(ioport_map(addr, 4))
  98
  99 #define ctrl_outb(b, addr)      sh64_out8(b, ioport_map(addr, 1))
 100 #define ctrl_outw(b, addr)      sh64_out16(b, ioport_map(addr, 2))
 101 #define ctrl_outl(b, addr)      sh64_out32(b, ioport_map(addr, 4))
 102
 103 #define ioread8(addr)           sh64_in8(addr)
 104 #define ioread16(addr)          sh64_in16(addr)
 105 #define ioread32(addr)          sh64_in32(addr)
 106 #define iowrite8(b, addr)       sh64_out8(b, addr)
 107 #define iowrite16(b, addr)      sh64_out16(b, addr)
 108 #define iowrite32(b, addr)      sh64_out32(b, addr)
 109
 110 #define inb(addr)               ctrl_inb(addr)
 111 #define inw(addr)               ctrl_inw(addr)
 112 #define inl(addr)               ctrl_inl(addr)
 113 #define outb(b, addr)           ctrl_outb(b, addr)
 114 #define outw(b, addr)           ctrl_outw(b, addr)
 115 #define outl(b, addr)           ctrl_outl(b, addr)
 116
 117 void outsw(unsigned long port, const void *addr, unsigned long count);
 118 void insw(unsigned long port, void *addr, unsigned long count);
 119 void outsl(unsigned long port, const void *addr, unsigned long count);
 120 void insl(unsigned long port, void *addr, unsigned long count);
 121
 122 #define inb_p(addr)    inb(addr)
 123 #define inw_p(addr)    inw(addr)
 124 #define inl_p(addr)    inl(addr)
 125 #define outb_p(x,addr) outb(x,addr)
 126 #define outw_p(x,addr) outw(x,addr)
 127 #define outl_p(x,addr) outl(x,addr)
 128
 129 #define __raw_readb             readb
 130 #define __raw_readw             readw
 131 #define __raw_readl             readl
 132 #define __raw_writeb            writeb
 133 #define __raw_writew            writew
 134 #define __raw_writel            writel
 135
 136 void memcpy_toio(void __iomem *to, const void *from, long count);
 137 void memcpy_fromio(void *to, void __iomem *from, long count);
 138
 139 #define mmiowb()
 140
 141 #ifdef __KERNEL__
 142
 143 #ifdef CONFIG_SH_CAYMAN
 144 extern unsigned long smsc_superio_virt;
 145 #endif
 146 #ifdef CONFIG_PCI
 147 extern unsigned long pciio_virt;
 148 #endif
 149
 150 #define IO_SPACE_LIMIT 0xffffffff
 151
 152 /*
 153  * Change virtual addresses to physical addresses and vv.
 154  * These are trivial on the 1:1 Linux/SuperH mapping
 155  */
 156 static inline unsigned long virt_to_phys(volatile void * address)
 157 {
 158         return __pa(address);
 159 }
 160
 161 static inline void * phys_to_virt(unsigned long address)
 162 {
 163         return __va(address);
 164 }
 165
 166 extern void * __ioremap(unsigned long phys_addr, unsigned long size,
 167                         unsigned long flags);
 168
 169 static inline void * ioremap(unsigned long phys_addr, unsigned long size)
 170 {
 171         return __ioremap(phys_addr, size, 1);
 172 }
 173
 174 static inline void * ioremap_nocache (unsigned long phys_addr, unsigned long size)
 175 {
 176         return __ioremap(phys_addr, size, 0);
 177 }
 178
 179 extern void iounmap(void *addr);
 180
 181 unsigned long onchip_remap(unsigned long addr, unsigned long size, const char* name);
 182 extern void onchip_unmap(unsigned long vaddr);
 183
 184 /*
 185  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
 186  * access
 187  */
 188 #define xlate_dev_mem_ptr(p)    __va(p)
 189
 190 /*
 191  * Convert a virtual cached pointer to an uncached pointer
 192  */
 193 #define xlate_dev_kmem_ptr(p)   p
 194
 195 #endif /* __KERNEL__ */
 196 #endif /* __ASM_SH64_IO_H */