summaryrefslogtreecommitdiffstats
path: root/arch/alpha/include/asm/io.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/include/asm/io.h')
-rw-r--r--arch/alpha/include/asm/io.h580
1 files changed, 0 insertions, 580 deletions
diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
deleted file mode 100644
index 5ebab58..0000000
--- a/arch/alpha/include/asm/io.h
+++ /dev/null
@@ -1,580 +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/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 = swpipl(IPL_MAX);
-
- barrier();
-
- 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;
-
- setipl(flags);
- barrier();
-}
-
-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);
-}
-
-/* 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 ioread16be(p) be16_to_cpu(ioread16(p))
-#define ioread32be(p) be32_to_cpu(ioread32(p))
-#define iowrite16be(v,p) iowrite16(cpu_to_be16(v), (p))
-#define iowrite32be(v,p) iowrite32(cpu_to_be32(v), (p))
-
-#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 */