mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* IO header file
|
|
*
|
|
* Copyright (C) 2001-2007 Tensilica Inc.
|
|
* Based on the Linux/Xtensa version of this header.
|
|
*/
|
|
|
|
#ifndef _XTENSA_IO_H
|
|
#define _XTENSA_IO_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
/*
|
|
* swap functions to change byte order from little-endian to big-endian and
|
|
* vice versa.
|
|
*/
|
|
|
|
static inline unsigned short _swapw(unsigned short v)
|
|
{
|
|
return (v << 8) | (v >> 8);
|
|
}
|
|
|
|
static inline unsigned int _swapl(unsigned int v)
|
|
{
|
|
return (v << 24) | ((v & 0xff00) << 8) |
|
|
((v >> 8) & 0xff00) | (v >> 24);
|
|
}
|
|
|
|
/*
|
|
* Generic I/O
|
|
*/
|
|
|
|
#define readb(addr) \
|
|
({ unsigned char __v = (*(volatile unsigned char *)(addr)); __v; })
|
|
#define readw(addr) \
|
|
({ unsigned short __v = (*(volatile unsigned short *)(addr)); __v; })
|
|
#define readl(addr) \
|
|
({ unsigned int __v = (*(volatile unsigned int *)(addr)); __v; })
|
|
#define writeb(b, addr) (void)((*(volatile unsigned char *)(addr)) = (b))
|
|
#define writew(b, addr) (void)((*(volatile unsigned short *)(addr)) = (b))
|
|
#define writel(b, addr) (void)((*(volatile unsigned int *)(addr)) = (b))
|
|
|
|
#define __raw_readb readb
|
|
#define __raw_readw readw
|
|
#define __raw_readl readl
|
|
#define __raw_writeb writeb
|
|
#define __raw_writew writew
|
|
#define __raw_writel writel
|
|
|
|
/* These are the definitions for the x86 IO instructions
|
|
* inb/inw/inl/outb/outw/outl, the "string" versions
|
|
* insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
|
|
* inb_p/inw_p/...
|
|
* The macros don't do byte-swapping.
|
|
*/
|
|
|
|
#define inb(port) readb((u8 *)((port)))
|
|
#define outb(val, port) writeb((val), (u8 *)((unsigned long)(port)))
|
|
#define inw(port) readw((u16 *)((port)))
|
|
#define outw(val, port) writew((val), (u16 *)((unsigned long)(port)))
|
|
#define inl(port) readl((u32 *)((port)))
|
|
#define outl(val, port) writel((val), (u32 *)((unsigned long)(port)))
|
|
|
|
#define inb_p(port) inb((port))
|
|
#define outb_p(val, port) outb((val), (port))
|
|
#define inw_p(port) inw((port))
|
|
#define outw_p(val, port) outw((val), (port))
|
|
#define inl_p(port) inl((port))
|
|
#define outl_p(val, port) outl((val), (port))
|
|
|
|
void insb(unsigned long port, void *dst, unsigned long count);
|
|
void insw(unsigned long port, void *dst, unsigned long count);
|
|
void insl(unsigned long port, void *dst, unsigned long count);
|
|
void outsb(unsigned long port, const void *src, unsigned long count);
|
|
void outsw(unsigned long port, const void *src, unsigned long count);
|
|
void outsl(unsigned long port, const void *src, unsigned long count);
|
|
|
|
#define IO_SPACE_LIMIT ~0
|
|
|
|
#define memset_io(a, b, c) memset((void *)(a), (b), (c))
|
|
#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
|
|
#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
|
|
|
|
/* At this point the Xtensa doesn't provide byte swap instructions */
|
|
|
|
#ifdef __XTENSA_EB__
|
|
# define in_8(addr) (*(u8 *)(addr))
|
|
# define in_le16(addr) _swapw(*(u16 *)(addr))
|
|
# define in_le32(addr) _swapl(*(u32 *)(addr))
|
|
# define out_8(b, addr) *(u8 *)(addr) = (b)
|
|
# define out_le16(b, addr) *(u16 *)(addr) = _swapw(b)
|
|
# define out_le32(b, addr) *(u32 *)(addr) = _swapl(b)
|
|
#elif defined(__XTENSA_EL__)
|
|
# define in_8(addr) (*(u8 *)(addr))
|
|
# define in_le16(addr) (*(u16 *)(addr))
|
|
# define in_le32(addr) (*(u32 *)(addr))
|
|
# define out_8(b, addr) *(u8 *)(addr) = (b)
|
|
# define out_le16(b, addr) *(u16 *)(addr) = (b)
|
|
# define out_le32(b, addr) *(u32 *)(addr) = (b)
|
|
#else
|
|
# error processor byte order undefined!
|
|
#endif
|
|
|
|
|
|
/*
|
|
* 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
|
|
|
|
/*
|
|
* Dummy function to keep U-Boot's cfi_flash.c driver happy.
|
|
*/
|
|
static inline void sync(void)
|
|
{
|
|
}
|
|
|
|
#include <asm-generic/io.h>
|
|
|
|
#endif /* _XTENSA_IO_H */
|