diff options
Diffstat (limited to 'include/asm-sh/io.h')
-rw-r--r-- | include/asm-sh/io.h | 68 |
1 files changed, 40 insertions, 28 deletions
diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h index 6ed34d8..94900c0 100644 --- a/include/asm-sh/io.h +++ b/include/asm-sh/io.h @@ -191,6 +191,8 @@ __BUILD_MEMORY_STRING(w, u16) #define mmiowb() wmb() /* synco on SH-4A, otherwise a nop */ +#define IO_SPACE_LIMIT 0xffffffff + /* * This function provides a method for the generic case where a board-specific * ioport_map simply needs to return the port + some arbitrary port base. @@ -226,6 +228,11 @@ static inline unsigned int ctrl_inl(unsigned long addr) return *(volatile unsigned long*)addr; } +static inline unsigned long long ctrl_inq(unsigned long addr) +{ + return *(volatile unsigned long long*)addr; +} + static inline void ctrl_outb(unsigned char b, unsigned long addr) { *(volatile unsigned char*)addr = b; @@ -241,49 +248,52 @@ static inline void ctrl_outl(unsigned int b, unsigned long addr) *(volatile unsigned long*)addr = b; } +static inline void ctrl_outq(unsigned long long b, unsigned long addr) +{ + *(volatile unsigned long long*)addr = b; +} + static inline void ctrl_delay(void) { +#ifdef P2SEG ctrl_inw(P2SEG); +#endif } -#define IO_SPACE_LIMIT 0xffffffff +/* Quad-word real-mode I/O, don't ask.. */ +unsigned long long peek_real_address_q(unsigned long long addr); +unsigned long long poke_real_address_q(unsigned long long addr, + unsigned long long val); -#ifdef CONFIG_MMU -/* - * Change virtual addresses to physical addresses and vv. - * These are trivial on the 1:1 Linux/SuperH mapping - */ -static inline unsigned long virt_to_phys(volatile void *address) -{ - return PHYSADDR(address); -} +/* arch/sh/mm/ioremap_64.c */ +unsigned long onchip_remap(unsigned long addr, unsigned long size, + const char *name); +extern void onchip_unmap(unsigned long vaddr); -static inline void *phys_to_virt(unsigned long address) -{ - return (void *)P1SEGADDR(address); -} -#else -#define phys_to_virt(address) ((void *)(address)) +#if !defined(CONFIG_MMU) #define virt_to_phys(address) ((unsigned long)(address)) +#define phys_to_virt(address) ((void *)(address)) +#else +#define virt_to_phys(address) (__pa(address)) +#define phys_to_virt(address) (__va(address)) #endif /* - * readX/writeX() are used to access memory mapped devices. On some - * architectures the memory mapped IO stuff needs to be accessed - * differently. On the x86 architecture, we just read/write the - * memory location directly. + * On 32-bit SH, we traditionally have the whole physical address space + * mapped at all times (as MIPS does), so "ioremap()" and "iounmap()" do + * not need to do anything but place the address in the proper segment. + * This is true for P1 and P2 addresses, as well as some P3 ones. + * However, most of the P3 addresses and newer cores using extended + * addressing need to map through page tables, so the ioremap() + * implementation becomes a bit more complicated. * - * On SH, we traditionally have the whole physical address space mapped - * at all times (as MIPS does), so "ioremap()" and "iounmap()" do not - * need to do anything but place the address in the proper segment. This - * is true for P1 and P2 addresses, as well as some P3 ones. However, - * most of the P3 addresses and newer cores using extended addressing - * need to map through page tables, so the ioremap() implementation - * becomes a bit more complicated. See arch/sh/mm/ioremap.c for - * additional notes on this. + * See arch/sh/mm/ioremap.c for additional notes on this. * * We cheat a bit and always return uncachable areas until we've fixed * the drivers to handle caching properly. + * + * On the SH-5 the concept of segmentation in the 1:1 PXSEG sense simply + * doesn't exist, so everything must go through page tables. */ #ifdef CONFIG_MMU void __iomem *__ioremap(unsigned long offset, unsigned long size, @@ -297,6 +307,7 @@ void __iounmap(void __iomem *addr); static inline void __iomem * __ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags) { +#ifdef CONFIG_SUPERH32 unsigned long last_addr = offset + size - 1; /* @@ -311,6 +322,7 @@ __ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags) return (void __iomem *)P2SEGADDR(offset); } +#endif return __ioremap(offset, size, flags); } |