mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 05:11:48 +00:00
181de82ee3
Impact: cleanup, remove dead code
The block layer dropped the virtual merge feature
(b8b3e16cfe).
BIO_VMERGE_BOUNDARY definition is meaningless now.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
#ifndef _ASM_X86_IO_H
|
|
#define _ASM_X86_IO_H
|
|
|
|
#define ARCH_HAS_IOREMAP_WC
|
|
|
|
#include <linux/compiler.h>
|
|
#include <asm-generic/int-ll64.h>
|
|
|
|
#define build_mmio_read(name, size, type, reg, barrier) \
|
|
static inline type name(const volatile void __iomem *addr) \
|
|
{ type ret; asm volatile("mov" size " %1,%0":reg (ret) \
|
|
:"m" (*(volatile type __force *)addr) barrier); return ret; }
|
|
|
|
#define build_mmio_write(name, size, type, reg, barrier) \
|
|
static inline void name(type val, volatile void __iomem *addr) \
|
|
{ asm volatile("mov" size " %0,%1": :reg (val), \
|
|
"m" (*(volatile type __force *)addr) barrier); }
|
|
|
|
build_mmio_read(readb, "b", unsigned char, "=q", :"memory")
|
|
build_mmio_read(readw, "w", unsigned short, "=r", :"memory")
|
|
build_mmio_read(readl, "l", unsigned int, "=r", :"memory")
|
|
|
|
build_mmio_read(__readb, "b", unsigned char, "=q", )
|
|
build_mmio_read(__readw, "w", unsigned short, "=r", )
|
|
build_mmio_read(__readl, "l", unsigned int, "=r", )
|
|
|
|
build_mmio_write(writeb, "b", unsigned char, "q", :"memory")
|
|
build_mmio_write(writew, "w", unsigned short, "r", :"memory")
|
|
build_mmio_write(writel, "l", unsigned int, "r", :"memory")
|
|
|
|
build_mmio_write(__writeb, "b", unsigned char, "q", )
|
|
build_mmio_write(__writew, "w", unsigned short, "r", )
|
|
build_mmio_write(__writel, "l", unsigned int, "r", )
|
|
|
|
#define readb_relaxed(a) __readb(a)
|
|
#define readw_relaxed(a) __readw(a)
|
|
#define readl_relaxed(a) __readl(a)
|
|
#define __raw_readb __readb
|
|
#define __raw_readw __readw
|
|
#define __raw_readl __readl
|
|
|
|
#define __raw_writeb __writeb
|
|
#define __raw_writew __writew
|
|
#define __raw_writel __writel
|
|
|
|
#define mmiowb() barrier()
|
|
|
|
#ifdef CONFIG_X86_64
|
|
|
|
build_mmio_read(readq, "q", unsigned long, "=r", :"memory")
|
|
build_mmio_write(writeq, "q", unsigned long, "r", :"memory")
|
|
|
|
#else
|
|
|
|
static inline __u64 readq(const volatile void __iomem *addr)
|
|
{
|
|
const volatile u32 __iomem *p = addr;
|
|
u32 low, high;
|
|
|
|
low = readl(p);
|
|
high = readl(p + 1);
|
|
|
|
return low + ((u64)high << 32);
|
|
}
|
|
|
|
static inline void writeq(__u64 val, volatile void __iomem *addr)
|
|
{
|
|
writel(val, addr);
|
|
writel(val >> 32, addr+4);
|
|
}
|
|
|
|
#endif
|
|
|
|
#define readq_relaxed(a) readq(a)
|
|
|
|
#define __raw_readq(a) readq(a)
|
|
#define __raw_writeq(val, addr) writeq(val, addr)
|
|
|
|
/* Let people know that we have them */
|
|
#define readq readq
|
|
#define writeq writeq
|
|
|
|
#ifdef CONFIG_X86_32
|
|
# include "io_32.h"
|
|
#else
|
|
# include "io_64.h"
|
|
#endif
|
|
|
|
extern void *xlate_dev_mem_ptr(unsigned long phys);
|
|
extern void unxlate_dev_mem_ptr(unsigned long phys, void *addr);
|
|
|
|
extern int ioremap_change_attr(unsigned long vaddr, unsigned long size,
|
|
unsigned long prot_val);
|
|
extern void __iomem *ioremap_wc(unsigned long offset, unsigned long size);
|
|
|
|
/*
|
|
* early_ioremap() and early_iounmap() are for temporary early boot-time
|
|
* mappings, before the real ioremap() is functional.
|
|
* A boot-time mapping is currently limited to at most 16 pages.
|
|
*/
|
|
extern void early_ioremap_init(void);
|
|
extern void early_ioremap_clear(void);
|
|
extern void early_ioremap_reset(void);
|
|
extern void __iomem *early_ioremap(unsigned long offset, unsigned long size);
|
|
extern void __iomem *early_memremap(unsigned long offset, unsigned long size);
|
|
extern void early_iounmap(void __iomem *addr, unsigned long size);
|
|
extern void __iomem *fix_ioremap(unsigned idx, unsigned long phys);
|
|
|
|
|
|
#endif /* _ASM_X86_IO_H */
|