8af57f8b4c
After performing the port2addr conversion, and checking that the data is correctly aligned, simply call __raw_readsX/writesX. These have already been optimised. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
155 lines
3.2 KiB
C
155 lines
3.2 KiB
C
/*
|
|
* arch/sh/kernel/io_generic.c
|
|
*
|
|
* Copyright (C) 2000 Niibe Yutaka
|
|
* Copyright (C) 2005 - 2007 Paul Mundt
|
|
*
|
|
* Generic I/O routine. These can be used where a machine specific version
|
|
* is not required.
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/io.h>
|
|
#include <asm/machvec.h>
|
|
|
|
#ifdef CONFIG_CPU_SH3
|
|
/* SH3 has a PCMCIA bug that needs a dummy read from area 6 for a
|
|
* workaround. */
|
|
/* I'm not sure SH7709 has this kind of bug */
|
|
#define dummy_read() __raw_readb(0xba000000)
|
|
#else
|
|
#define dummy_read()
|
|
#endif
|
|
|
|
unsigned long generic_io_base;
|
|
|
|
u8 generic_inb(unsigned long port)
|
|
{
|
|
return __raw_readb(__ioport_map(port, 1));
|
|
}
|
|
|
|
u16 generic_inw(unsigned long port)
|
|
{
|
|
return __raw_readw(__ioport_map(port, 2));
|
|
}
|
|
|
|
u32 generic_inl(unsigned long port)
|
|
{
|
|
return __raw_readl(__ioport_map(port, 4));
|
|
}
|
|
|
|
u8 generic_inb_p(unsigned long port)
|
|
{
|
|
unsigned long v = generic_inb(port);
|
|
|
|
ctrl_delay();
|
|
return v;
|
|
}
|
|
|
|
u16 generic_inw_p(unsigned long port)
|
|
{
|
|
unsigned long v = generic_inw(port);
|
|
|
|
ctrl_delay();
|
|
return v;
|
|
}
|
|
|
|
u32 generic_inl_p(unsigned long port)
|
|
{
|
|
unsigned long v = generic_inl(port);
|
|
|
|
ctrl_delay();
|
|
return v;
|
|
}
|
|
|
|
/*
|
|
* insb/w/l all read a series of bytes/words/longs from a fixed port
|
|
* address. However as the port address doesn't change we only need to
|
|
* convert the port address to real address once.
|
|
*/
|
|
|
|
void generic_insb(unsigned long port, void *dst, unsigned long count)
|
|
{
|
|
__raw_readsb(__ioport_map(port, 1), dst, count);
|
|
dummy_read();
|
|
}
|
|
|
|
void generic_insw(unsigned long port, void *dst, unsigned long count)
|
|
{
|
|
__raw_readsw(__ioport_map(port, 2), dst, count);
|
|
dummy_read();
|
|
}
|
|
|
|
void generic_insl(unsigned long port, void *dst, unsigned long count)
|
|
{
|
|
__raw_readsl(__ioport_map(port, 4), dst, count);
|
|
dummy_read();
|
|
}
|
|
|
|
void generic_outb(u8 b, unsigned long port)
|
|
{
|
|
__raw_writeb(b, __ioport_map(port, 1));
|
|
}
|
|
|
|
void generic_outw(u16 b, unsigned long port)
|
|
{
|
|
__raw_writew(b, __ioport_map(port, 2));
|
|
}
|
|
|
|
void generic_outl(u32 b, unsigned long port)
|
|
{
|
|
__raw_writel(b, __ioport_map(port, 4));
|
|
}
|
|
|
|
void generic_outb_p(u8 b, unsigned long port)
|
|
{
|
|
generic_outb(b, port);
|
|
ctrl_delay();
|
|
}
|
|
|
|
void generic_outw_p(u16 b, unsigned long port)
|
|
{
|
|
generic_outw(b, port);
|
|
ctrl_delay();
|
|
}
|
|
|
|
void generic_outl_p(u32 b, unsigned long port)
|
|
{
|
|
generic_outl(b, port);
|
|
ctrl_delay();
|
|
}
|
|
|
|
/*
|
|
* outsb/w/l all write a series of bytes/words/longs to a fixed port
|
|
* address. However as the port address doesn't change we only need to
|
|
* convert the port address to real address once.
|
|
*/
|
|
void generic_outsb(unsigned long port, const void *src, unsigned long count)
|
|
{
|
|
__raw_writesb(__ioport_map(port, 1), src, count);
|
|
dummy_read();
|
|
}
|
|
|
|
void generic_outsw(unsigned long port, const void *src, unsigned long count)
|
|
{
|
|
__raw_writesw(__ioport_map(port, 2), src, count);
|
|
dummy_read();
|
|
}
|
|
|
|
void generic_outsl(unsigned long port, const void *src, unsigned long count)
|
|
{
|
|
__raw_writesl(__ioport_map(port, 4), src, count);
|
|
dummy_read();
|
|
}
|
|
|
|
void __iomem *generic_ioport_map(unsigned long addr, unsigned int size)
|
|
{
|
|
return (void __iomem *)(addr + generic_io_base);
|
|
}
|
|
|
|
void generic_ioport_unmap(void __iomem *addr)
|
|
{
|
|
}
|