1 #ifndef _ASM_M32R_IO_H 2 #define _ASM_M32R_IO_H 3 4 #include <linux/string.h> 5 #include <linux/compiler.h> 6 #include <asm/page.h> /* __va */ 7 8 #ifdef __KERNEL__ 9 10 #define IO_SPACE_LIMIT 0xFFFFFFFF 11 12 /** 13 * virt_to_phys - map virtual addresses to physical 14 * @address: address to remap 15 * 16 * The returned physical address is the physical (CPU) mapping for 17 * the memory address given. It is only valid to use this function on 18 * addresses directly mapped or allocated via kmalloc. 19 * 20 * This function does not give bus mappings for DMA transfers. In 21 * almost all conceivable cases a device driver should not be using 22 * this function 23 */ 24 virt_to_phys(volatile void * address)25 static inline unsigned long virt_to_phys(volatile void * address) 26 { 27 return __pa(address); 28 } 29 30 /** 31 * phys_to_virt - map physical address to virtual 32 * @address: address to remap 33 * 34 * The returned virtual address is a current CPU mapping for 35 * the memory address given. It is only valid to use this function on 36 * addresses that have a kernel mapping 37 * 38 * This function does not handle bus mappings for DMA transfers. In 39 * almost all conceivable cases a device driver should not be using 40 * this function 41 */ 42 phys_to_virt(unsigned long address)43 static inline void *phys_to_virt(unsigned long address) 44 { 45 return __va(address); 46 } 47 48 extern void __iomem * 49 __ioremap(unsigned long offset, unsigned long size, unsigned long flags); 50 51 /** 52 * ioremap - map bus memory into CPU space 53 * @offset: bus address of the memory 54 * @size: size of the resource to map 55 * 56 * ioremap performs a platform specific sequence of operations to 57 * make bus memory CPU accessible via the readb/readw/readl/writeb/ 58 * writew/writel functions and the other mmio helpers. The returned 59 * address is not guaranteed to be usable directly as a virtual 60 * address. 61 */ 62 ioremap(unsigned long offset,unsigned long size)63 static inline void __iomem *ioremap(unsigned long offset, unsigned long size) 64 { 65 return __ioremap(offset, size, 0); 66 } 67 68 extern void iounmap(volatile void __iomem *addr); 69 #define ioremap_nocache(off,size) ioremap(off,size) 70 71 /* 72 * IO bus memory addresses are also 1:1 with the physical address 73 */ 74 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) 75 #define page_to_bus page_to_phys 76 #define virt_to_bus virt_to_phys 77 78 extern unsigned char _inb(unsigned long); 79 extern unsigned short _inw(unsigned long); 80 extern unsigned long _inl(unsigned long); 81 extern unsigned char _inb_p(unsigned long); 82 extern unsigned short _inw_p(unsigned long); 83 extern unsigned long _inl_p(unsigned long); 84 extern void _outb(unsigned char, unsigned long); 85 extern void _outw(unsigned short, unsigned long); 86 extern void _outl(unsigned long, unsigned long); 87 extern void _outb_p(unsigned char, unsigned long); 88 extern void _outw_p(unsigned short, unsigned long); 89 extern void _outl_p(unsigned long, unsigned long); 90 extern void _insb(unsigned int, void *, unsigned long); 91 extern void _insw(unsigned int, void *, unsigned long); 92 extern void _insl(unsigned int, void *, unsigned long); 93 extern void _outsb(unsigned int, const void *, unsigned long); 94 extern void _outsw(unsigned int, const void *, unsigned long); 95 extern void _outsl(unsigned int, const void *, unsigned long); 96 _readb(unsigned long addr)97 static inline unsigned char _readb(unsigned long addr) 98 { 99 return *(volatile unsigned char __force *)addr; 100 } 101 _readw(unsigned long addr)102 static inline unsigned short _readw(unsigned long addr) 103 { 104 return *(volatile unsigned short __force *)addr; 105 } 106 _readl(unsigned long addr)107 static inline unsigned long _readl(unsigned long addr) 108 { 109 return *(volatile unsigned long __force *)addr; 110 } 111 _writeb(unsigned char b,unsigned long addr)112 static inline void _writeb(unsigned char b, unsigned long addr) 113 { 114 *(volatile unsigned char __force *)addr = b; 115 } 116 _writew(unsigned short w,unsigned long addr)117 static inline void _writew(unsigned short w, unsigned long addr) 118 { 119 *(volatile unsigned short __force *)addr = w; 120 } 121 _writel(unsigned long l,unsigned long addr)122 static inline void _writel(unsigned long l, unsigned long addr) 123 { 124 *(volatile unsigned long __force *)addr = l; 125 } 126 127 #define inb _inb 128 #define inw _inw 129 #define inl _inl 130 #define outb _outb 131 #define outw _outw 132 #define outl _outl 133 134 #define inb_p _inb_p 135 #define inw_p _inw_p 136 #define inl_p _inl_p 137 #define outb_p _outb_p 138 #define outw_p _outw_p 139 #define outl_p _outl_p 140 141 #define insb _insb 142 #define insw _insw 143 #define insl _insl 144 #define outsb _outsb 145 #define outsw _outsw 146 #define outsl _outsl 147 148 #define readb(addr) _readb((unsigned long)(addr)) 149 #define readw(addr) _readw((unsigned long)(addr)) 150 #define readl(addr) _readl((unsigned long)(addr)) 151 #define __raw_readb readb 152 #define __raw_readw readw 153 #define __raw_readl readl 154 #define readb_relaxed readb 155 #define readw_relaxed readw 156 #define readl_relaxed readl 157 158 #define writeb(val, addr) _writeb((val), (unsigned long)(addr)) 159 #define writew(val, addr) _writew((val), (unsigned long)(addr)) 160 #define writel(val, addr) _writel((val), (unsigned long)(addr)) 161 #define __raw_writeb writeb 162 #define __raw_writew writew 163 #define __raw_writel writel 164 165 #define ioread8 read 166 #define ioread16 readw 167 #define ioread32 readl 168 #define iowrite8 writeb 169 #define iowrite16 writew 170 #define iowrite32 writel 171 172 #define mmiowb() 173 174 #define flush_write_buffers() do { } while (0) /* M32R_FIXME */ 175 176 static inline void memset_io(volatile void __iomem * addr,unsigned char val,int count)177 memset_io(volatile void __iomem *addr, unsigned char val, int count) 178 { 179 memset((void __force *) addr, val, count); 180 } 181 182 static inline void memcpy_fromio(void * dst,volatile void __iomem * src,int count)183 memcpy_fromio(void *dst, volatile void __iomem *src, int count) 184 { 185 memcpy(dst, (void __force *) src, count); 186 } 187 188 static inline void memcpy_toio(volatile void __iomem * dst,const void * src,int count)189 memcpy_toio(volatile void __iomem *dst, const void *src, int count) 190 { 191 memcpy((void __force *) dst, src, count); 192 } 193 194 /* 195 * Convert a physical pointer to a virtual kernel pointer for /dev/mem 196 * access 197 */ 198 #define xlate_dev_mem_ptr(p) __va(p) 199 200 /* 201 * Convert a virtual cached pointer to an uncached pointer 202 */ 203 #define xlate_dev_kmem_ptr(p) p 204 205 #endif /* __KERNEL__ */ 206 207 #endif /* _ASM_M32R_IO_H */ 208