mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-27 13:33:40 +00:00
b032eb1f71
Defined __io is no-op for the SH architecture and it can be removed from board files without any functional change. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
264 lines
9 KiB
C
264 lines
9 KiB
C
/*
|
|
* linux/include/asm-sh/io.h
|
|
*
|
|
* Copyright (C) 1996-2000 Russell King
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* Modifications:
|
|
* 16-Sep-1996 RMK Inlined the inx/outx functions & optimised for both
|
|
* constant addresses and variable addresses.
|
|
* 04-Dec-1997 RMK Moved a lot of this stuff to the new architecture
|
|
* specific IO header files.
|
|
* 27-Mar-1999 PJB Second parameter of memcpy_toio is const..
|
|
* 04-Apr-1999 PJB Added check_signature.
|
|
* 12-Dec-1999 RMK More cleanups
|
|
* 18-Jun-2000 RMK Removed virt_to_* and friends definitions
|
|
*/
|
|
#ifndef __ASM_SH_IO_H
|
|
#define __ASM_SH_IO_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
/*
|
|
* Generic virtual read/write. Note that we don't support half-word
|
|
* read/writes. We define __arch_*[bl] here, and leave __arch_*w
|
|
* to the architecture specific code.
|
|
*/
|
|
#define __arch_getb(a) (*(volatile unsigned char *)(a))
|
|
#define __arch_getw(a) (*(volatile unsigned short *)(a))
|
|
#define __arch_getl(a) (*(volatile unsigned int *)(a))
|
|
|
|
#define __arch_putb(v, a) (*(volatile unsigned char *)(a) = (v))
|
|
#define __arch_putw(v, a) (*(volatile unsigned short *)(a) = (v))
|
|
#define __arch_putl(v, a) (*(volatile unsigned int *)(a) = (v))
|
|
|
|
extern void __raw_writesb(unsigned int addr, const void *data, int bytelen);
|
|
extern void __raw_writesw(unsigned int addr, const void *data, int wordlen);
|
|
extern void __raw_writesl(unsigned int addr, const void *data, int longlen);
|
|
|
|
extern void __raw_readsb(unsigned int addr, void *data, int bytelen);
|
|
extern void __raw_readsw(unsigned int addr, void *data, int wordlen);
|
|
extern void __raw_readsl(unsigned int addr, void *data, int longlen);
|
|
|
|
#define __raw_writeb(v, a) __arch_putb(v, a)
|
|
#define __raw_writew(v, a) __arch_putw(v, a)
|
|
#define __raw_writel(v, a) __arch_putl(v, a)
|
|
|
|
#define __raw_readb(a) __arch_getb(a)
|
|
#define __raw_readw(a) __arch_getw(a)
|
|
#define __raw_readl(a) __arch_getl(a)
|
|
|
|
/*
|
|
* The compiler seems to be incapable of optimising constants
|
|
* properly. Spell it out to the compiler in some cases.
|
|
* These are only valid for small values of "off" (< 1<<12)
|
|
*/
|
|
#define __raw_base_writeb(val, base, off) __arch_base_putb(val, base, off)
|
|
#define __raw_base_writew(val, base, off) __arch_base_putw(val, base, off)
|
|
#define __raw_base_writel(val, base, off) __arch_base_putl(val, base, off)
|
|
|
|
#define __raw_base_readb(base, off) __arch_base_getb(base, off)
|
|
#define __raw_base_readw(base, off) __arch_base_getw(base, off)
|
|
#define __raw_base_readl(base, off) __arch_base_getl(base, off)
|
|
|
|
/*
|
|
* IO port access primitives
|
|
* -------------------------
|
|
*
|
|
* The SH doesn't have special IO access instructions; all IO is memory
|
|
* mapped. Note that these are defined to perform little endian accesses
|
|
* only. Their primary purpose is to access PCI and ISA peripherals.
|
|
*
|
|
* Note that we prevent GCC re-ordering or caching values in expressions
|
|
* by introducing sequence points into the in*() definitions. Note that
|
|
* __raw_* do not guarantee this behaviour.
|
|
*
|
|
* The {in,out}[bwl] macros are for emulating x86-style PCI/ISA IO space.
|
|
*/
|
|
#define outb(v, p) __raw_writeb(v, p)
|
|
#define outw(v, p) __raw_writew(cpu_to_le16(v), p)
|
|
#define outl(v, p) __raw_writel(cpu_to_le32(v), p)
|
|
|
|
#define inb(p) ({ unsigned int __v = __raw_readb(p); __v; })
|
|
#define inw(p) ({ unsigned int __v = __le16_to_cpu(__raw_readw(p)); __v; })
|
|
#define inl(p) ({ unsigned int __v = __le32_to_cpu(__raw_readl(p)); __v; })
|
|
|
|
#define outsb(p, d, l) __raw_writesb(p, d, l)
|
|
#define outsw(p, d, l) __raw_writesw(p, d, l)
|
|
#define outsl(p, d, l) __raw_writesl(p, d, l)
|
|
|
|
#define insb(p, d, l) __raw_readsb(p, d, l)
|
|
#define insw(p, d, l) __raw_readsw(p, d, l)
|
|
#define insl(p, d, l) __raw_readsl(p, d, l)
|
|
|
|
#define outb_p(val, port) outb((val), (port))
|
|
#define outw_p(val, port) outw((val), (port))
|
|
#define outl_p(val, port) outl((val), (port))
|
|
#define inb_p(port) inb((port))
|
|
#define inw_p(port) inw((port))
|
|
#define inl_p(port) inl((port))
|
|
|
|
#define outsb_p(port, from, len) outsb(port, from, len)
|
|
#define outsw_p(port, from, len) outsw(port, from, len)
|
|
#define outsl_p(port, from, len) outsl(port, from, len)
|
|
#define insb_p(port, to, len) insb(port, to, len)
|
|
#define insw_p(port, to, len) insw(port, to, len)
|
|
#define insl_p(port, to, len) insl(port, to, len)
|
|
|
|
/* for U-Boot PCI */
|
|
#define out_8(port, val) outb(val, port)
|
|
#define out_le16(port, val) outw(val, port)
|
|
#define out_le32(port, val) outl(val, port)
|
|
#define in_8(port) inb(port)
|
|
#define in_le16(port) inw(port)
|
|
#define in_le32(port) inl(port)
|
|
|
|
/*
|
|
* DMA-consistent mapping functions. These allocate/free a region of
|
|
* uncached, unwrite-buffered mapped memory space for use with DMA
|
|
* devices. This is the "generic" version. The PCI specific version
|
|
* is in pci.h
|
|
*/
|
|
extern void *consistent_alloc(int gfp, size_t size, dma_addr_t *handle);
|
|
extern void consistent_free(void *vaddr, size_t size, dma_addr_t handle);
|
|
extern void consistent_sync(void *vaddr, size_t size, int rw);
|
|
|
|
/*
|
|
* String version of IO memory access ops:
|
|
*/
|
|
extern void _memcpy_fromio(void *, unsigned long, size_t);
|
|
extern void _memcpy_toio(unsigned long, const void *, size_t);
|
|
extern void _memset_io(unsigned long, int, size_t);
|
|
|
|
/*
|
|
* If this architecture has PCI memory IO, then define the read/write
|
|
* macros. These should only be used with the cookie passed from
|
|
* ioremap.
|
|
*/
|
|
#ifdef __mem_pci
|
|
|
|
#define readb(c) ({ unsigned int __v = __raw_readb(__mem_pci(c)); __v; })
|
|
#define readw(c)\
|
|
({ unsigned int __v = le16_to_cpu(__raw_readw(__mem_pci(c))); __v; })
|
|
#define readl(c)\
|
|
({ unsigned int __v = le32_to_cpu(__raw_readl(__mem_pci(c))); __v; })
|
|
|
|
#define writeb(v, c) __raw_writeb(v, __mem_pci(c))
|
|
#define writew(v, c) __raw_writew(cpu_to_le16(v), __mem_pci(c))
|
|
#define writel(v, c) __raw_writel(cpu_to_le32(v), __mem_pci(c))
|
|
|
|
#define memset_io(c, v, l) _memset_io(__mem_pci(c), (v), (l))
|
|
#define memcpy_fromio(a, c, l) _memcpy_fromio((a), __mem_pci(c), (l))
|
|
#define memcpy_toio(c, a, l) _memcpy_toio(__mem_pci(c), (a), (l))
|
|
|
|
#define eth_io_copy_and_sum(s, c, l, b) \
|
|
eth_copy_and_sum((s), __mem_pci(c), (l), (b))
|
|
|
|
static inline int
|
|
check_signature(unsigned long io_addr, const unsigned char *signature,
|
|
int length)
|
|
{
|
|
int retval = 0;
|
|
do {
|
|
if (readb(io_addr) != *signature)
|
|
goto out;
|
|
io_addr++;
|
|
signature++;
|
|
length--;
|
|
} while (length);
|
|
retval = 1;
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
#elif !defined(readb)
|
|
|
|
#define readb(addr) __raw_readb(addr)
|
|
#define readw(addr) __raw_readw(addr)
|
|
#define readl(addr) __raw_readl(addr)
|
|
#define writeb(v, addr) __raw_writeb(v, addr)
|
|
#define writew(v, addr) __raw_writew(v, addr)
|
|
#define writel(v, addr) __raw_writel(v, addr)
|
|
|
|
#define check_signature(io, sig, len) (0)
|
|
|
|
#endif /* __mem_pci */
|
|
|
|
static inline void sync(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Clear and set bits in one shot. These macros can be used to clear and
|
|
* set multiple bits in a register using a single call. These macros can
|
|
* also be used to set a multiple-bit bit pattern using a mask, by
|
|
* specifying the mask in the 'clear' parameter and the new bit pattern
|
|
* in the 'set' parameter.
|
|
*/
|
|
|
|
#define clrbits(type, addr, clear) \
|
|
out_##type((addr), in_##type(addr) & ~(clear))
|
|
|
|
#define setbits(type, addr, set) \
|
|
out_##type((addr), in_##type(addr) | (set))
|
|
|
|
#define clrsetbits(type, addr, clear, set) \
|
|
out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
|
|
|
|
#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
|
|
#define setbits_be32(addr, set) setbits(be32, addr, set)
|
|
#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
|
|
|
|
#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
|
|
#define setbits_le32(addr, set) setbits(le32, addr, set)
|
|
#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
|
|
|
|
#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
|
|
#define setbits_be16(addr, set) setbits(be16, addr, set)
|
|
#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
|
|
|
|
#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
|
|
#define setbits_le16(addr, set) setbits(le16, addr, set)
|
|
#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
|
|
|
|
#define clrbits_8(addr, clear) clrbits(8, addr, clear)
|
|
#define setbits_8(addr, set) setbits(8, addr, set)
|
|
#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
|
|
|
|
/*
|
|
* Given a physical address and a length, return a virtual address
|
|
* that can be used to access the memory range with the caching
|
|
* properties specified by "flags".
|
|
*/
|
|
#define MAP_NOCACHE (0)
|
|
#define MAP_WRCOMBINE (0)
|
|
#define MAP_WRBACK (0)
|
|
#define MAP_WRTHROUGH (0)
|
|
|
|
static inline void *
|
|
map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
|
|
{
|
|
return (void *)paddr;
|
|
}
|
|
|
|
/*
|
|
* Take down a mapping set up by map_physmem().
|
|
*/
|
|
static inline void unmap_physmem(void *vaddr, unsigned long flags)
|
|
{
|
|
|
|
}
|
|
|
|
static inline phys_addr_t virt_to_phys(void *vaddr)
|
|
{
|
|
return (phys_addr_t)(vaddr);
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __ASM_SH_IO_H */
|