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Diffstat (limited to 'include/asm-alpha/io.h')
| -rw-r--r-- | include/asm-alpha/io.h | 577 |
1 files changed, 0 insertions, 577 deletions
diff --git a/include/asm-alpha/io.h b/include/asm-alpha/io.h deleted file mode 100644 index e971ab000f9..00000000000 --- a/include/asm-alpha/io.h +++ /dev/null @@ -1,577 +0,0 @@ -#ifndef __ALPHA_IO_H -#define __ALPHA_IO_H - -#ifdef __KERNEL__ - -#include <linux/kernel.h> -#include <linux/mm.h> -#include <asm/compiler.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/machvec.h> -#include <asm/hwrpb.h> - -/* The generic header contains only prototypes. Including it ensures that - the implementation we have here matches that interface. */ -#include <asm-generic/iomap.h> - -/* We don't use IO slowdowns on the Alpha, but.. */ -#define __SLOW_DOWN_IO do { } while (0) -#define SLOW_DOWN_IO do { } while (0) - -/* - * Virtual -> physical identity mapping starts at this offset - */ -#ifdef USE_48_BIT_KSEG -#define IDENT_ADDR 0xffff800000000000UL -#else -#define IDENT_ADDR 0xfffffc0000000000UL -#endif - -/* - * We try to avoid hae updates (thus the cache), but when we - * do need to update the hae, we need to do it atomically, so - * that any interrupts wouldn't get confused with the hae - * register not being up-to-date with respect to the hardware - * value. - */ -extern inline void __set_hae(unsigned long new_hae) -{ - unsigned long flags; - local_irq_save(flags); - - alpha_mv.hae_cache = new_hae; - *alpha_mv.hae_register = new_hae; - mb(); - /* Re-read to make sure it was written. */ - new_hae = *alpha_mv.hae_register; - - local_irq_restore(flags); -} - -extern inline void set_hae(unsigned long new_hae) -{ - if (new_hae != alpha_mv.hae_cache) - __set_hae(new_hae); -} - -/* - * Change virtual addresses to physical addresses and vv. - */ -#ifdef USE_48_BIT_KSEG -static inline unsigned long virt_to_phys(void *address) -{ - return (unsigned long)address - IDENT_ADDR; -} - -static inline void * phys_to_virt(unsigned long address) -{ - return (void *) (address + IDENT_ADDR); -} -#else -static inline unsigned long virt_to_phys(void *address) -{ - unsigned long phys = (unsigned long)address; - - /* Sign-extend from bit 41. */ - phys <<= (64 - 41); - phys = (long)phys >> (64 - 41); - - /* Crop to the physical address width of the processor. */ - phys &= (1ul << hwrpb->pa_bits) - 1; - - return phys; -} - -static inline void * phys_to_virt(unsigned long address) -{ - return (void *)(IDENT_ADDR + (address & ((1ul << 41) - 1))); -} -#endif - -#define page_to_phys(page) page_to_pa(page) - -static inline dma_addr_t __deprecated isa_page_to_bus(struct page *page) -{ - return page_to_phys(page); -} - -/* This depends on working iommu. */ -#define BIO_VMERGE_BOUNDARY (alpha_mv.mv_pci_tbi ? PAGE_SIZE : 0) - -/* Maximum PIO space address supported? */ -#define IO_SPACE_LIMIT 0xffff - -/* - * Change addresses as seen by the kernel (virtual) to addresses as - * seen by a device (bus), and vice versa. - * - * Note that this only works for a limited range of kernel addresses, - * and very well may not span all memory. Consider this interface - * deprecated in favour of the DMA-mapping API. - */ -extern unsigned long __direct_map_base; -extern unsigned long __direct_map_size; - -static inline unsigned long __deprecated virt_to_bus(void *address) -{ - unsigned long phys = virt_to_phys(address); - unsigned long bus = phys + __direct_map_base; - return phys <= __direct_map_size ? bus : 0; -} -#define isa_virt_to_bus virt_to_bus - -static inline void * __deprecated bus_to_virt(unsigned long address) -{ - void *virt; - - /* This check is a sanity check but also ensures that bus address 0 - maps to virtual address 0 which is useful to detect null pointers - (the NCR driver is much simpler if NULL pointers are preserved). */ - address -= __direct_map_base; - virt = phys_to_virt(address); - return (long)address <= 0 ? NULL : virt; -} -#define isa_bus_to_virt bus_to_virt - -/* - * There are different chipsets to interface the Alpha CPUs to the world. - */ - -#define IO_CONCAT(a,b) _IO_CONCAT(a,b) -#define _IO_CONCAT(a,b) a ## _ ## b - -#ifdef CONFIG_ALPHA_GENERIC - -/* In a generic kernel, we always go through the machine vector. */ - -#define REMAP1(TYPE, NAME, QUAL) \ -static inline TYPE generic_##NAME(QUAL void __iomem *addr) \ -{ \ - return alpha_mv.mv_##NAME(addr); \ -} - -#define REMAP2(TYPE, NAME, QUAL) \ -static inline void generic_##NAME(TYPE b, QUAL void __iomem *addr) \ -{ \ - alpha_mv.mv_##NAME(b, addr); \ -} - -REMAP1(unsigned int, ioread8, /**/) -REMAP1(unsigned int, ioread16, /**/) -REMAP1(unsigned int, ioread32, /**/) -REMAP1(u8, readb, const volatile) -REMAP1(u16, readw, const volatile) -REMAP1(u32, readl, const volatile) -REMAP1(u64, readq, const volatile) - -REMAP2(u8, iowrite8, /**/) -REMAP2(u16, iowrite16, /**/) -REMAP2(u32, iowrite32, /**/) -REMAP2(u8, writeb, volatile) -REMAP2(u16, writew, volatile) -REMAP2(u32, writel, volatile) -REMAP2(u64, writeq, volatile) - -#undef REMAP1 -#undef REMAP2 - -extern inline void __iomem *generic_ioportmap(unsigned long a) -{ - return alpha_mv.mv_ioportmap(a); -} - -static inline void __iomem *generic_ioremap(unsigned long a, unsigned long s) -{ - return alpha_mv.mv_ioremap(a, s); -} - -static inline void generic_iounmap(volatile void __iomem *a) -{ - return alpha_mv.mv_iounmap(a); -} - -static inline int generic_is_ioaddr(unsigned long a) -{ - return alpha_mv.mv_is_ioaddr(a); -} - -static inline int generic_is_mmio(const volatile void __iomem *a) -{ - return alpha_mv.mv_is_mmio(a); -} - -#define __IO_PREFIX generic -#define generic_trivial_rw_bw 0 -#define generic_trivial_rw_lq 0 -#define generic_trivial_io_bw 0 -#define generic_trivial_io_lq 0 -#define generic_trivial_iounmap 0 - -#else - -#if defined(CONFIG_ALPHA_APECS) -# include <asm/core_apecs.h> -#elif defined(CONFIG_ALPHA_CIA) -# include <asm/core_cia.h> -#elif defined(CONFIG_ALPHA_IRONGATE) -# include <asm/core_irongate.h> -#elif defined(CONFIG_ALPHA_JENSEN) -# include <asm/jensen.h> -#elif defined(CONFIG_ALPHA_LCA) -# include <asm/core_lca.h> -#elif defined(CONFIG_ALPHA_MARVEL) -# include <asm/core_marvel.h> -#elif defined(CONFIG_ALPHA_MCPCIA) -# include <asm/core_mcpcia.h> -#elif defined(CONFIG_ALPHA_POLARIS) -# include <asm/core_polaris.h> -#elif defined(CONFIG_ALPHA_T2) -# include <asm/core_t2.h> -#elif defined(CONFIG_ALPHA_TSUNAMI) -# include <asm/core_tsunami.h> -#elif defined(CONFIG_ALPHA_TITAN) -# include <asm/core_titan.h> -#elif defined(CONFIG_ALPHA_WILDFIRE) -# include <asm/core_wildfire.h> -#else -#error "What system is this?" -#endif - -#endif /* GENERIC */ - -/* - * We always have external versions of these routines. - */ -extern u8 inb(unsigned long port); -extern u16 inw(unsigned long port); -extern u32 inl(unsigned long port); -extern void outb(u8 b, unsigned long port); -extern void outw(u16 b, unsigned long port); -extern void outl(u32 b, unsigned long port); - -extern u8 readb(const volatile void __iomem *addr); -extern u16 readw(const volatile void __iomem *addr); -extern u32 readl(const volatile void __iomem *addr); -extern u64 readq(const volatile void __iomem *addr); -extern void writeb(u8 b, volatile void __iomem *addr); -extern void writew(u16 b, volatile void __iomem *addr); -extern void writel(u32 b, volatile void __iomem *addr); -extern void writeq(u64 b, volatile void __iomem *addr); - -extern u8 __raw_readb(const volatile void __iomem *addr); -extern u16 __raw_readw(const volatile void __iomem *addr); -extern u32 __raw_readl(const volatile void __iomem *addr); -extern u64 __raw_readq(const volatile void __iomem *addr); -extern void __raw_writeb(u8 b, volatile void __iomem *addr); -extern void __raw_writew(u16 b, volatile void __iomem *addr); -extern void __raw_writel(u32 b, volatile void __iomem *addr); -extern void __raw_writeq(u64 b, volatile void __iomem *addr); - -/* - * Mapping from port numbers to __iomem space is pretty easy. - */ - -/* These two have to be extern inline because of the extern prototype from - <asm-generic/iomap.h>. It is not legal to mix "extern" and "static" for - the same declaration. */ -extern inline void __iomem *ioport_map(unsigned long port, unsigned int size) -{ - return IO_CONCAT(__IO_PREFIX,ioportmap) (port); -} - -extern inline void ioport_unmap(void __iomem *addr) -{ -} - -static inline void __iomem *ioremap(unsigned long port, unsigned long size) -{ - return IO_CONCAT(__IO_PREFIX,ioremap) (port, size); -} - -static inline void __iomem *__ioremap(unsigned long port, unsigned long size, - unsigned long flags) -{ - return ioremap(port, size); -} - -static inline void __iomem * ioremap_nocache(unsigned long offset, - unsigned long size) -{ - return ioremap(offset, size); -} - -static inline void iounmap(volatile void __iomem *addr) -{ - IO_CONCAT(__IO_PREFIX,iounmap)(addr); -} - -static inline int __is_ioaddr(unsigned long addr) -{ - return IO_CONCAT(__IO_PREFIX,is_ioaddr)(addr); -} -#define __is_ioaddr(a) __is_ioaddr((unsigned long)(a)) - -static inline int __is_mmio(const volatile void __iomem *addr) -{ - return IO_CONCAT(__IO_PREFIX,is_mmio)(addr); -} - - -/* - * If the actual I/O bits are sufficiently trivial, then expand inline. - */ - -#if IO_CONCAT(__IO_PREFIX,trivial_io_bw) -extern inline unsigned int ioread8(void __iomem *addr) -{ - unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread8)(addr); - mb(); - return ret; -} - -extern inline unsigned int ioread16(void __iomem *addr) -{ - unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread16)(addr); - mb(); - return ret; -} - -extern inline void iowrite8(u8 b, void __iomem *addr) -{ - IO_CONCAT(__IO_PREFIX,iowrite8)(b, addr); - mb(); -} - -extern inline void iowrite16(u16 b, void __iomem *addr) -{ - IO_CONCAT(__IO_PREFIX,iowrite16)(b, addr); - mb(); -} - -extern inline u8 inb(unsigned long port) -{ - return ioread8(ioport_map(port, 1)); -} - -extern inline u16 inw(unsigned long port) -{ - return ioread16(ioport_map(port, 2)); -} - -extern inline void outb(u8 b, unsigned long port) -{ - iowrite8(b, ioport_map(port, 1)); -} - -extern inline void outw(u16 b, unsigned long port) -{ - iowrite16(b, ioport_map(port, 2)); -} -#endif - -#if IO_CONCAT(__IO_PREFIX,trivial_io_lq) -extern inline unsigned int ioread32(void __iomem *addr) -{ - unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread32)(addr); - mb(); - return ret; -} - -extern inline void iowrite32(u32 b, void __iomem *addr) -{ - IO_CONCAT(__IO_PREFIX,iowrite32)(b, addr); - mb(); -} - -extern inline u32 inl(unsigned long port) -{ - return ioread32(ioport_map(port, 4)); -} - -extern inline void outl(u32 b, unsigned long port) -{ - iowrite32(b, ioport_map(port, 4)); -} -#endif - -#if IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 1 -extern inline u8 __raw_readb(const volatile void __iomem *addr) -{ - return IO_CONCAT(__IO_PREFIX,readb)(addr); -} - -extern inline u16 __raw_readw(const volatile void __iomem *addr) -{ - return IO_CONCAT(__IO_PREFIX,readw)(addr); -} - -extern inline void __raw_writeb(u8 b, volatile void __iomem *addr) -{ - IO_CONCAT(__IO_PREFIX,writeb)(b, addr); -} - -extern inline void __raw_writew(u16 b, volatile void __iomem *addr) -{ - IO_CONCAT(__IO_PREFIX,writew)(b, addr); -} - -extern inline u8 readb(const volatile void __iomem *addr) -{ - u8 ret = __raw_readb(addr); - mb(); - return ret; -} - -extern inline u16 readw(const volatile void __iomem *addr) -{ - u16 ret = __raw_readw(addr); - mb(); - return ret; -} - -extern inline void writeb(u8 b, volatile void __iomem *addr) -{ - __raw_writeb(b, addr); - mb(); -} - -extern inline void writew(u16 b, volatile void __iomem *addr) -{ - __raw_writew(b, addr); - mb(); -} -#endif - -#if IO_CONCAT(__IO_PREFIX,trivial_rw_lq) == 1 -extern inline u32 __raw_readl(const volatile void __iomem *addr) -{ - return IO_CONCAT(__IO_PREFIX,readl)(addr); -} - -extern inline u64 __raw_readq(const volatile void __iomem *addr) -{ - return IO_CONCAT(__IO_PREFIX,readq)(addr); -} - -extern inline void __raw_writel(u32 b, volatile void __iomem *addr) -{ - IO_CONCAT(__IO_PREFIX,writel)(b, addr); -} - -extern inline void __raw_writeq(u64 b, volatile void __iomem *addr) -{ - IO_CONCAT(__IO_PREFIX,writeq)(b, addr); -} - -extern inline u32 readl(const volatile void __iomem *addr) -{ - u32 ret = __raw_readl(addr); - mb(); - return ret; -} - -extern inline u64 readq(const volatile void __iomem *addr) -{ - u64 ret = __raw_readq(addr); - mb(); - return ret; -} - -extern inline void writel(u32 b, volatile void __iomem *addr) -{ - __raw_writel(b, addr); - mb(); -} - -extern inline void writeq(u64 b, volatile void __iomem *addr) -{ - __raw_writeq(b, addr); - mb(); -} -#endif - -#define inb_p inb -#define inw_p inw -#define inl_p inl -#define outb_p outb -#define outw_p outw -#define outl_p outl -#define readb_relaxed(addr) __raw_readb(addr) -#define readw_relaxed(addr) __raw_readw(addr) -#define readl_relaxed(addr) __raw_readl(addr) -#define readq_relaxed(addr) __raw_readq(addr) - -#define mmiowb() - -/* - * String version of IO memory access ops: - */ -extern void memcpy_fromio(void *, const volatile void __iomem *, long); -extern void memcpy_toio(volatile void __iomem *, const void *, long); -extern void _memset_c_io(volatile void __iomem *, unsigned long, long); - -static inline void memset_io(volatile void __iomem *addr, u8 c, long len) -{ - _memset_c_io(addr, 0x0101010101010101UL * c, len); -} - -#define __HAVE_ARCH_MEMSETW_IO -static inline void memsetw_io(volatile void __iomem *addr, u16 c, long len) -{ - _memset_c_io(addr, 0x0001000100010001UL * c, len); -} - -/* - * String versions of in/out ops: - */ -extern void insb (unsigned long port, void *dst, unsigned long count); -extern void insw (unsigned long port, void *dst, unsigned long count); -extern void insl (unsigned long port, void *dst, unsigned long count); -extern void outsb (unsigned long port, const void *src, unsigned long count); -extern void outsw (unsigned long port, const void *src, unsigned long count); -extern void outsl (unsigned long port, const void *src, unsigned long count); - -/* - * The Alpha Jensen hardware for some rather strange reason puts - * the RTC clock at 0x170 instead of 0x70. Probably due to some - * misguided idea about using 0x70 for NMI stuff. - * - * These defines will override the defaults when doing RTC queries - */ - -#ifdef CONFIG_ALPHA_GENERIC -# define RTC_PORT(x) ((x) + alpha_mv.rtc_port) -#else -# ifdef CONFIG_ALPHA_JENSEN -# define RTC_PORT(x) (0x170+(x)) -# else -# define RTC_PORT(x) (0x70 + (x)) -# endif -#endif -#define RTC_ALWAYS_BCD 0 - -/* - * Some mucking forons use if[n]def writeq to check if platform has it. - * It's a bloody bad idea and we probably want ARCH_HAS_WRITEQ for them - * to play with; for now just use cpp anti-recursion logics and make sure - * that damn thing is defined and expands to itself. - */ - -#define writeq writeq -#define readq readq - -/* - * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * access - */ -#define xlate_dev_mem_ptr(p) __va(p) - -/* - * Convert a virtual cached pointer to an uncached pointer - */ -#define xlate_dev_kmem_ptr(p) p - -#endif /* __KERNEL__ */ - -#endif /* __ALPHA_IO_H */ |