#define __ASM_GENERIC_IO_H
#include <asm/page.h> /* I/O is all done through memory accesses */
+#include <linux/string.h> /* for memset() and memcpy() */
#include <linux/types.h>
#ifdef CONFIG_GENERIC_IOMAP
#define mmiowb() do {} while (0)
#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 simple architectures, we just read/write the
- * memory location directly.
+ * __raw_{read,write}{b,w,l,q}() access memory in native endianness.
+ *
+ * On some architectures memory mapped IO needs to be accessed differently.
+ * On the simple architectures, we just read/write the memory location
+ * directly.
*/
+
#ifndef __raw_readb
+#define __raw_readb __raw_readb
static inline u8 __raw_readb(const volatile void __iomem *addr)
{
- return *(const volatile u8 __force *) addr;
+ return *(const volatile u8 __force *)addr;
}
#endif
#ifndef __raw_readw
+#define __raw_readw __raw_readw
static inline u16 __raw_readw(const volatile void __iomem *addr)
{
- return *(const volatile u16 __force *) addr;
+ return *(const volatile u16 __force *)addr;
}
#endif
#ifndef __raw_readl
+#define __raw_readl __raw_readl
static inline u32 __raw_readl(const volatile void __iomem *addr)
{
- return *(const volatile u32 __force *) addr;
+ return *(const volatile u32 __force *)addr;
}
#endif
-#define readb __raw_readb
-
-#define readw readw
-static inline u16 readw(const volatile void __iomem *addr)
-{
- return __le16_to_cpu(__raw_readw(addr));
-}
-
-#define readl readl
-static inline u32 readl(const volatile void __iomem *addr)
+#ifdef CONFIG_64BIT
+#ifndef __raw_readq
+#define __raw_readq __raw_readq
+static inline u64 __raw_readq(const volatile void __iomem *addr)
{
- return __le32_to_cpu(__raw_readl(addr));
+ return *(const volatile u64 __force *)addr;
}
+#endif
+#endif /* CONFIG_64BIT */
#ifndef __raw_writeb
-static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
+#define __raw_writeb __raw_writeb
+static inline void __raw_writeb(u8 value, volatile void __iomem *addr)
{
- *(volatile u8 __force *) addr = b;
+ *(volatile u8 __force *)addr = value;
}
#endif
#ifndef __raw_writew
-static inline void __raw_writew(u16 b, volatile void __iomem *addr)
+#define __raw_writew __raw_writew
+static inline void __raw_writew(u16 value, volatile void __iomem *addr)
{
- *(volatile u16 __force *) addr = b;
+ *(volatile u16 __force *)addr = value;
}
#endif
#ifndef __raw_writel
-static inline void __raw_writel(u32 b, volatile void __iomem *addr)
+#define __raw_writel __raw_writel
+static inline void __raw_writel(u32 value, volatile void __iomem *addr)
{
- *(volatile u32 __force *) addr = b;
+ *(volatile u32 __force *)addr = value;
}
#endif
-#define writeb __raw_writeb
-#define writew(b,addr) __raw_writew(__cpu_to_le16(b),addr)
-#define writel(b,addr) __raw_writel(__cpu_to_le32(b),addr)
-
#ifdef CONFIG_64BIT
-#ifndef __raw_readq
-static inline u64 __raw_readq(const volatile void __iomem *addr)
+#ifndef __raw_writeq
+#define __raw_writeq __raw_writeq
+static inline void __raw_writeq(u64 value, volatile void __iomem *addr)
{
- return *(const volatile u64 __force *) addr;
+ *(volatile u64 __force *)addr = value;
}
#endif
+#endif /* CONFIG_64BIT */
-#define readq readq
-static inline u64 readq(const volatile void __iomem *addr)
-{
- return __le64_to_cpu(__raw_readq(addr));
-}
+/*
+ * {read,write}{b,w,l,q}() access little endian memory and return result in
+ * native endianness.
+ */
-#ifndef __raw_writeq
-static inline void __raw_writeq(u64 b, volatile void __iomem *addr)
+#ifndef readb
+#define readb readb
+static inline u8 readb(const volatile void __iomem *addr)
{
- *(volatile u64 __force *) addr = b;
+ return __raw_readb(addr);
}
#endif
-#define writeq(b, addr) __raw_writeq(__cpu_to_le64(b), addr)
-#endif /* CONFIG_64BIT */
-
-#ifndef PCI_IOBASE
-#define PCI_IOBASE ((void __iomem *) 0)
+#ifndef readw
+#define readw readw
+static inline u16 readw(const volatile void __iomem *addr)
+{
+ return __le16_to_cpu(__raw_readw(addr));
+}
#endif
-/*****************************************************************************/
-/*
- * traditional input/output functions
- */
-
-static inline u8 inb(unsigned long addr)
+#ifndef readl
+#define readl readl
+static inline u32 readl(const volatile void __iomem *addr)
{
- return readb(addr + PCI_IOBASE);
+ return __le32_to_cpu(__raw_readl(addr));
}
+#endif
-static inline u16 inw(unsigned long addr)
+#ifdef CONFIG_64BIT
+#ifndef readq
+#define readq readq
+static inline u64 readq(const volatile void __iomem *addr)
{
- return readw(addr + PCI_IOBASE);
+ return __le64_to_cpu(__raw_readq(addr));
}
+#endif
+#endif /* CONFIG_64BIT */
-static inline u32 inl(unsigned long addr)
+#ifndef writeb
+#define writeb writeb
+static inline void writeb(u8 value, volatile void __iomem *addr)
{
- return readl(addr + PCI_IOBASE);
+ __raw_writeb(value, addr);
}
+#endif
-static inline void outb(u8 b, unsigned long addr)
+#ifndef writew
+#define writew writew
+static inline void writew(u16 value, volatile void __iomem *addr)
{
- writeb(b, addr + PCI_IOBASE);
+ __raw_writew(cpu_to_le16(value), addr);
}
+#endif
-static inline void outw(u16 b, unsigned long addr)
+#ifndef writel
+#define writel writel
+static inline void writel(u32 value, volatile void __iomem *addr)
{
- writew(b, addr + PCI_IOBASE);
+ __raw_writel(__cpu_to_le32(value), addr);
}
+#endif
-static inline void outl(u32 b, unsigned long addr)
+#ifdef CONFIG_64BIT
+#ifndef writeq
+#define writeq writeq
+static inline void writeq(u64 value, volatile void __iomem *addr)
{
- writel(b, addr + PCI_IOBASE);
+ __raw_writeq(__cpu_to_le64(value), addr);
}
-
-#define inb_p(addr) inb(addr)
-#define inw_p(addr) inw(addr)
-#define inl_p(addr) inl(addr)
-#define outb_p(x, addr) outb((x), (addr))
-#define outw_p(x, addr) outw((x), (addr))
-#define outl_p(x, addr) outl((x), (addr))
+#endif
+#endif /* CONFIG_64BIT */
#ifndef insb
static inline void insb(unsigned long addr, void *buffer, int count)
#endif
#ifndef CONFIG_GENERIC_IOMAP
-#define ioread8(addr) readb(addr)
-#define ioread16(addr) readw(addr)
-#define ioread16be(addr) __be16_to_cpu(__raw_readw(addr))
-#define ioread32(addr) readl(addr)
-#define ioread32be(addr) __be32_to_cpu(__raw_readl(addr))
-
-#define iowrite8(v, addr) writeb((v), (addr))
-#define iowrite16(v, addr) writew((v), (addr))
-#define iowrite16be(v, addr) __raw_writew(__cpu_to_be16(v), addr)
-#define iowrite32(v, addr) writel((v), (addr))
-#define iowrite32be(v, addr) __raw_writel(__cpu_to_be32(v), addr)
-
#define ioread8_rep(p, dst, count) \
insb((unsigned long) (p), (dst), (count))
#define ioread16_rep(p, dst, count) \
outsl((unsigned long) (p), (src), (count))
#endif /* CONFIG_GENERIC_IOMAP */
+#ifndef PCI_IOBASE
+#define PCI_IOBASE ((void __iomem *)0)
+#endif
+
#ifndef IO_SPACE_LIMIT
#define IO_SPACE_LIMIT 0xffff
#endif
+/*
+ * {in,out}{b,w,l}() access little endian I/O. {in,out}{b,w,l}_p() can be
+ * implemented on hardware that needs an additional delay for I/O accesses to
+ * take effect.
+ */
+
+#ifndef inb
+#define inb inb
+static inline u8 inb(unsigned long addr)
+{
+ return readb(PCI_IOBASE + addr);
+}
+#endif
+
+#ifndef inw
+#define inw inw
+static inline u16 inw(unsigned long addr)
+{
+ return readw(PCI_IOBASE + addr);
+}
+#endif
+
+#ifndef inl
+#define inl inl
+static inline u32 inl(unsigned long addr)
+{
+ return readl(PCI_IOBASE + addr);
+}
+#endif
+
+#ifndef outb
+#define outb outb
+static inline void outb(u8 value, unsigned long addr)
+{
+ writeb(value, PCI_IOBASE + addr);
+}
+#endif
+
+#ifndef outw
+#define outw outw
+static inline void outw(u16 value, unsigned long addr)
+{
+ writew(value, PCI_IOBASE + addr);
+}
+#endif
+
+#ifndef outl
+#define outl outl
+static inline void outl(u32 value, unsigned long addr)
+{
+ writel(value, PCI_IOBASE + addr);
+}
+#endif
+
+#ifndef inb_p
+#define inb_p inb_p
+static inline u8 inb_p(unsigned long addr)
+{
+ return inb(addr);
+}
+#endif
+
+#ifndef inw_p
+#define inw_p inw_p
+static inline u16 inw_p(unsigned long addr)
+{
+ return inw(addr);
+}
+#endif
+
+#ifndef inl_p
+#define inl_p inl_p
+static inline u32 inl_p(unsigned long addr)
+{
+ return inl(addr);
+}
+#endif
+
+#ifndef outb_p
+#define outb_p outb_p
+static inline void outb_p(u8 value, unsigned long addr)
+{
+ outb(value, addr);
+}
+#endif
+
+#ifndef outw_p
+#define outw_p outw_p
+static inline void outw_p(u16 value, unsigned long addr)
+{
+ outw(value, addr);
+}
+#endif
+
+#ifndef outl_p
+#define outl_p outl_p
+static inline void outl_p(u32 value, unsigned long addr)
+{
+ outl(value, addr);
+}
+#endif
+
+#ifndef CONFIG_GENERIC_IOMAP
+#ifndef ioread8
+#define ioread8 ioread8
+static inline u8 ioread8(const volatile void __iomem *addr)
+{
+ return readb(addr);
+}
+#endif
+
+#ifndef ioread16
+#define ioread16 ioread16
+static inline u16 ioread16(const volatile void __iomem *addr)
+{
+ return readw(addr);
+}
+#endif
+
+#ifndef ioread32
+#define ioread32 ioread32
+static inline u32 ioread32(const volatile void __iomem *addr)
+{
+ return readl(addr);
+}
+#endif
+
+#ifndef iowrite8
+#define iowrite8 iowrite8
+static inline void iowrite8(u8 value, volatile void __iomem *addr)
+{
+ writeb(value, addr);
+}
+#endif
+
+#ifndef iowrite16
+#define iowrite16 iowrite16
+static inline void iowrite16(u16 value, volatile void __iomem *addr)
+{
+ writew(value, addr);
+}
+#endif
+
+#ifndef iowrite32
+#define iowrite32 iowrite32
+static inline void iowrite32(u32 value, volatile void __iomem *addr)
+{
+ writel(value, addr);
+}
+#endif
+
+#ifndef ioread16be
+#define ioread16be ioread16be
+static inline u16 ioread16be(const volatile void __iomem *addr)
+{
+ return __be16_to_cpu(__raw_readw(addr));
+}
+#endif
+
+#ifndef ioread32be
+#define ioread32be ioread32be
+static inline u32 ioread32be(const volatile void __iomem *addr)
+{
+ return __be32_to_cpu(__raw_readl(addr));
+}
+#endif
+
+#ifndef iowrite16be
+#define iowrite16be iowrite16be
+static inline void iowrite16be(u16 value, void volatile __iomem *addr)
+{
+ __raw_writew(__cpu_to_be16(value), addr);
+}
+#endif
+
+#ifndef iowrite32be
+#define iowrite32be iowrite32be
+static inline void iowrite32be(u32 value, volatile void __iomem *addr)
+{
+ __raw_writel(__cpu_to_be32(value), addr);
+}
+#endif
+#endif /* CONFIG_GENERIC_IOMAP */
+
#ifdef __KERNEL__
#include <linux/vmalloc.h>
-#define __io_virt(x) ((void __force *) (x))
+#define __io_virt(x) ((void __force *)(x))
#ifndef CONFIG_GENERIC_IOMAP
struct pci_dev;
extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
#ifndef pci_iounmap
+#define pci_iounmap pci_iounmap
static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
{
}
* These are pretty trivial
*/
#ifndef virt_to_phys
+#define virt_to_phys virt_to_phys
static inline unsigned long virt_to_phys(volatile void *address)
{
return __pa((unsigned long)address);
}
+#endif
+#ifndef phys_to_virt
+#define phys_to_virt phys_to_virt
static inline void *phys_to_virt(unsigned long address)
{
return __va(address);
* This implementation is for the no-MMU case only... if you have an MMU
* you'll need to provide your own definitions.
*/
+
#ifndef CONFIG_MMU
-static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
+#ifndef ioremap
+#define ioremap ioremap
+static inline void __iomem *ioremap(phys_addr_t offset, size_t size)
{
- return (void __iomem*) (unsigned long)offset;
+ return (void __iomem *)(unsigned long)offset;
}
+#endif
-#define __ioremap(offset, size, flags) ioremap(offset, size)
+#ifndef __ioremap
+#define __ioremap __ioremap
+static inline void __iomem *__ioremap(phys_addr_t offset, size_t size,
+ unsigned long flags)
+{
+ return ioremap(offset, size);
+}
+#endif
#ifndef ioremap_nocache
-#define ioremap_nocache ioremap
+#define ioremap_nocache ioremap_nocache
+static inline void __iomem *ioremap_nocache(phys_addr_t offset, size_t size)
+{
+ return ioremap(offset, size);
+}
#endif
#ifndef ioremap_wc
-#define ioremap_wc ioremap_nocache
+#define ioremap_wc ioremap_wc
+static inline void __iomem *ioremap_wc(phys_addr_t offset, size_t size)
+{
+ return ioremap_nocache(offset, size);
+}
#endif
+#ifndef iounmap
+#define iounmap iounmap
static inline void iounmap(void __iomem *addr)
{
}
+#endif
#endif /* CONFIG_MMU */
#ifdef CONFIG_HAS_IOPORT_MAP
#ifndef CONFIG_GENERIC_IOMAP
+#ifndef ioport_map
+#define ioport_map ioport_map
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
return PCI_IOBASE + (port & IO_SPACE_LIMIT);
}
+#endif
+#ifndef ioport_unmap
+#define ioport_unmap ioport_unmap
static inline void ioport_unmap(void __iomem *p)
{
}
+#endif
#else /* CONFIG_GENERIC_IOMAP */
extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
extern void ioport_unmap(void __iomem *p);
#endif /* CONFIG_HAS_IOPORT_MAP */
#ifndef xlate_dev_kmem_ptr
-#define xlate_dev_kmem_ptr(p) p
+#define xlate_dev_kmem_ptr xlate_dev_kmem_ptr
+static inline void *xlate_dev_kmem_ptr(void *addr)
+{
+ return addr;
+}
#endif
+
#ifndef xlate_dev_mem_ptr
-#define xlate_dev_mem_ptr(p) __va(p)
+#define xlate_dev_mem_ptr xlate_dev_mem_ptr
+static inline void *xlate_dev_mem_ptr(phys_addr_t addr)
+{
+ return __va(addr);
+}
+#endif
+
+#ifndef unxlate_dev_mem_ptr
+#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
+static inline void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr)
+{
+}
#endif
#ifdef CONFIG_VIRT_TO_BUS
#ifndef virt_to_bus
-static inline unsigned long virt_to_bus(volatile void *address)
+static inline unsigned long virt_to_bus(void *address)
{
- return ((unsigned long) address);
+ return (unsigned long)address;
}
static inline void *bus_to_virt(unsigned long address)
{
- return (void *) address;
+ return (void *)address;
}
#endif
#endif
#ifndef memset_io
-#define memset_io(a, b, c) memset(__io_virt(a), (b), (c))
+#define memset_io memset_io
+static inline void memset_io(volatile void __iomem *addr, int value,
+ size_t size)
+{
+ memset(__io_virt(addr), value, size);
+}
#endif
#ifndef memcpy_fromio
-#define memcpy_fromio(a, b, c) memcpy((a), __io_virt(b), (c))
+#define memcpy_fromio memcpy_fromio
+static inline void memcpy_fromio(void *buffer,
+ const volatile void __iomem *addr,
+ size_t size)
+{
+ memcpy(buffer, __io_virt(addr), size);
+}
#endif
+
#ifndef memcpy_toio
-#define memcpy_toio(a, b, c) memcpy(__io_virt(a), (b), (c))
+#define memcpy_toio memcpy_toio
+static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer,
+ size_t size)
+{
+ memcpy(__io_virt(addr), buffer, size);
+}
#endif
#endif /* __KERNEL__ */
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