mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 18:46:43 +07:00
f13cec8447
"extern inline" will have different semantics with gcc 4.3, and "static inline" is correct here. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
294 lines
7.4 KiB
C
294 lines
7.4 KiB
C
#ifndef _ASM_IO_H
|
|
#define _ASM_IO_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/pgtable.h>
|
|
|
|
extern unsigned long parisc_vmerge_boundary;
|
|
extern unsigned long parisc_vmerge_max_size;
|
|
|
|
#define BIO_VMERGE_BOUNDARY parisc_vmerge_boundary
|
|
#define BIO_VMERGE_MAX_SIZE parisc_vmerge_max_size
|
|
|
|
#define virt_to_phys(a) ((unsigned long)__pa(a))
|
|
#define phys_to_virt(a) __va(a)
|
|
#define virt_to_bus virt_to_phys
|
|
#define bus_to_virt phys_to_virt
|
|
|
|
static inline unsigned long isa_bus_to_virt(unsigned long addr) {
|
|
BUG();
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned long isa_virt_to_bus(void *addr) {
|
|
BUG();
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Memory mapped I/O
|
|
*
|
|
* readX()/writeX() do byteswapping and take an ioremapped address
|
|
* __raw_readX()/__raw_writeX() don't byteswap and take an ioremapped address.
|
|
* gsc_*() don't byteswap and operate on physical addresses;
|
|
* eg dev->hpa or 0xfee00000.
|
|
*/
|
|
|
|
static inline unsigned char gsc_readb(unsigned long addr)
|
|
{
|
|
long flags;
|
|
unsigned char ret;
|
|
|
|
__asm__ __volatile__(
|
|
" rsm 2,%0\n"
|
|
" ldbx 0(%2),%1\n"
|
|
" mtsm %0\n"
|
|
: "=&r" (flags), "=r" (ret) : "r" (addr) );
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline unsigned short gsc_readw(unsigned long addr)
|
|
{
|
|
long flags;
|
|
unsigned short ret;
|
|
|
|
__asm__ __volatile__(
|
|
" rsm 2,%0\n"
|
|
" ldhx 0(%2),%1\n"
|
|
" mtsm %0\n"
|
|
: "=&r" (flags), "=r" (ret) : "r" (addr) );
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline unsigned int gsc_readl(unsigned long addr)
|
|
{
|
|
u32 ret;
|
|
|
|
__asm__ __volatile__(
|
|
" ldwax 0(%1),%0\n"
|
|
: "=r" (ret) : "r" (addr) );
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline unsigned long long gsc_readq(unsigned long addr)
|
|
{
|
|
unsigned long long ret;
|
|
|
|
#ifdef CONFIG_64BIT
|
|
__asm__ __volatile__(
|
|
" ldda 0(%1),%0\n"
|
|
: "=r" (ret) : "r" (addr) );
|
|
#else
|
|
/* two reads may have side effects.. */
|
|
ret = ((u64) gsc_readl(addr)) << 32;
|
|
ret |= gsc_readl(addr+4);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
static inline void gsc_writeb(unsigned char val, unsigned long addr)
|
|
{
|
|
long flags;
|
|
__asm__ __volatile__(
|
|
" rsm 2,%0\n"
|
|
" stbs %1,0(%2)\n"
|
|
" mtsm %0\n"
|
|
: "=&r" (flags) : "r" (val), "r" (addr) );
|
|
}
|
|
|
|
static inline void gsc_writew(unsigned short val, unsigned long addr)
|
|
{
|
|
long flags;
|
|
__asm__ __volatile__(
|
|
" rsm 2,%0\n"
|
|
" sths %1,0(%2)\n"
|
|
" mtsm %0\n"
|
|
: "=&r" (flags) : "r" (val), "r" (addr) );
|
|
}
|
|
|
|
static inline void gsc_writel(unsigned int val, unsigned long addr)
|
|
{
|
|
__asm__ __volatile__(
|
|
" stwas %0,0(%1)\n"
|
|
: : "r" (val), "r" (addr) );
|
|
}
|
|
|
|
static inline void gsc_writeq(unsigned long long val, unsigned long addr)
|
|
{
|
|
#ifdef CONFIG_64BIT
|
|
__asm__ __volatile__(
|
|
" stda %0,0(%1)\n"
|
|
: : "r" (val), "r" (addr) );
|
|
#else
|
|
/* two writes may have side effects.. */
|
|
gsc_writel(val >> 32, addr);
|
|
gsc_writel(val, addr+4);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* The standard PCI ioremap interfaces
|
|
*/
|
|
|
|
extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
|
|
|
|
/* Most machines react poorly to I/O-space being cacheable... Instead let's
|
|
* define ioremap() in terms of ioremap_nocache().
|
|
*/
|
|
static inline void __iomem * ioremap(unsigned long offset, unsigned long size)
|
|
{
|
|
return __ioremap(offset, size, _PAGE_NO_CACHE);
|
|
}
|
|
#define ioremap_nocache(off, sz) ioremap((off), (sz))
|
|
|
|
extern void iounmap(const volatile void __iomem *addr);
|
|
|
|
static inline unsigned char __raw_readb(const volatile void __iomem *addr)
|
|
{
|
|
return (*(volatile unsigned char __force *) (addr));
|
|
}
|
|
static inline unsigned short __raw_readw(const volatile void __iomem *addr)
|
|
{
|
|
return *(volatile unsigned short __force *) addr;
|
|
}
|
|
static inline unsigned int __raw_readl(const volatile void __iomem *addr)
|
|
{
|
|
return *(volatile unsigned int __force *) addr;
|
|
}
|
|
static inline unsigned long long __raw_readq(const volatile void __iomem *addr)
|
|
{
|
|
return *(volatile unsigned long long __force *) addr;
|
|
}
|
|
|
|
static inline void __raw_writeb(unsigned char b, volatile void __iomem *addr)
|
|
{
|
|
*(volatile unsigned char __force *) addr = b;
|
|
}
|
|
static inline void __raw_writew(unsigned short b, volatile void __iomem *addr)
|
|
{
|
|
*(volatile unsigned short __force *) addr = b;
|
|
}
|
|
static inline void __raw_writel(unsigned int b, volatile void __iomem *addr)
|
|
{
|
|
*(volatile unsigned int __force *) addr = b;
|
|
}
|
|
static inline void __raw_writeq(unsigned long long b, volatile void __iomem *addr)
|
|
{
|
|
*(volatile unsigned long long __force *) addr = b;
|
|
}
|
|
|
|
/* readb can never be const, so use __fswab instead of le*_to_cpu */
|
|
#define readb(addr) __raw_readb(addr)
|
|
#define readw(addr) __fswab16(__raw_readw(addr))
|
|
#define readl(addr) __fswab32(__raw_readl(addr))
|
|
#define readq(addr) __fswab64(__raw_readq(addr))
|
|
#define writeb(b, addr) __raw_writeb(b, addr)
|
|
#define writew(b, addr) __raw_writew(cpu_to_le16(b), addr)
|
|
#define writel(b, addr) __raw_writel(cpu_to_le32(b), addr)
|
|
#define writeq(b, addr) __raw_writeq(cpu_to_le64(b), addr)
|
|
|
|
#define readb_relaxed(addr) readb(addr)
|
|
#define readw_relaxed(addr) readw(addr)
|
|
#define readl_relaxed(addr) readl(addr)
|
|
#define readq_relaxed(addr) readq(addr)
|
|
|
|
#define mmiowb() do { } while (0)
|
|
|
|
void memset_io(volatile void __iomem *addr, unsigned char val, int count);
|
|
void memcpy_fromio(void *dst, const volatile void __iomem *src, int count);
|
|
void memcpy_toio(volatile void __iomem *dst, const void *src, int count);
|
|
|
|
/* Port-space IO */
|
|
|
|
#define inb_p inb
|
|
#define inw_p inw
|
|
#define inl_p inl
|
|
#define outb_p outb
|
|
#define outw_p outw
|
|
#define outl_p outl
|
|
|
|
extern unsigned char eisa_in8(unsigned short port);
|
|
extern unsigned short eisa_in16(unsigned short port);
|
|
extern unsigned int eisa_in32(unsigned short port);
|
|
extern void eisa_out8(unsigned char data, unsigned short port);
|
|
extern void eisa_out16(unsigned short data, unsigned short port);
|
|
extern void eisa_out32(unsigned int data, unsigned short port);
|
|
|
|
#if defined(CONFIG_PCI)
|
|
extern unsigned char inb(int addr);
|
|
extern unsigned short inw(int addr);
|
|
extern unsigned int inl(int addr);
|
|
|
|
extern void outb(unsigned char b, int addr);
|
|
extern void outw(unsigned short b, int addr);
|
|
extern void outl(unsigned int b, int addr);
|
|
#elif defined(CONFIG_EISA)
|
|
#define inb eisa_in8
|
|
#define inw eisa_in16
|
|
#define inl eisa_in32
|
|
#define outb eisa_out8
|
|
#define outw eisa_out16
|
|
#define outl eisa_out32
|
|
#else
|
|
static inline char inb(unsigned long addr)
|
|
{
|
|
BUG();
|
|
return -1;
|
|
}
|
|
|
|
static inline short inw(unsigned long addr)
|
|
{
|
|
BUG();
|
|
return -1;
|
|
}
|
|
|
|
static inline int inl(unsigned long addr)
|
|
{
|
|
BUG();
|
|
return -1;
|
|
}
|
|
|
|
#define outb(x, y) BUG()
|
|
#define outw(x, y) BUG()
|
|
#define outl(x, y) BUG()
|
|
#endif
|
|
|
|
/*
|
|
* 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);
|
|
|
|
|
|
/* IO Port space is : BBiiii where BB is HBA number. */
|
|
#define IO_SPACE_LIMIT 0x00ffffff
|
|
|
|
/* PA machines have an MM I/O space from 0xf0000000-0xffffffff in 32
|
|
* bit mode and from 0xfffffffff0000000-0xfffffffffffffff in 64 bit
|
|
* mode (essentially just sign extending. This macro takes in a 32
|
|
* bit I/O address (still with the leading f) and outputs the correct
|
|
* value for either 32 or 64 bit mode */
|
|
#define F_EXTEND(x) ((unsigned long)((x) | (0xffffffff00000000ULL)))
|
|
|
|
#include <asm-generic/iomap.h>
|
|
|
|
/*
|
|
* 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
|