-/* $Id: io_generic.c,v 1.2 2003/05/04 19:29:53 lethal Exp $
- *
- * linux/arch/sh/kernel/io_generic.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 <asm/io.h>
-#include <asm/machvec.h>
#include <linux/module.h>
+#include <linux/io.h>
+#include <asm/machvec.h>
-#if defined(CONFIG_CPU_SH3)
+#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 SH3_PCMCIA_BUG_WORKAROUND 1
-#define DUMMY_READ_AREA6 0xba000000
+#define dummy_read() __raw_readb(0xba000000)
+#else
+#define dummy_read()
#endif
-#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x))
-
-unsigned long generic_io_base;
+unsigned long generic_io_base = 0;
-static inline void delay(void)
+u8 generic_inb(unsigned long port)
{
- ctrl_inw(0xa0000000);
+ return __raw_readb(__ioport_map(port, 1));
}
-unsigned char generic_inb(unsigned long port)
+u16 generic_inw(unsigned long port)
{
- return *(volatile unsigned char*)PORT2ADDR(port);
+ return __raw_readw(__ioport_map(port, 2));
}
-unsigned short generic_inw(unsigned long port)
+u32 generic_inl(unsigned long port)
{
- return *(volatile unsigned short*)PORT2ADDR(port);
+ return __raw_readl(__ioport_map(port, 4));
}
-unsigned int generic_inl(unsigned long port)
+u8 generic_inb_p(unsigned long port)
{
- return *(volatile unsigned long*)PORT2ADDR(port);
-}
-
-unsigned char generic_inb_p(unsigned long port)
-{
- unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);
+ unsigned long v = generic_inb(port);
- delay();
+ ctrl_delay();
return v;
}
-unsigned short generic_inw_p(unsigned long port)
+u16 generic_inw_p(unsigned long port)
{
- unsigned long v = *(volatile unsigned short*)PORT2ADDR(port);
+ unsigned long v = generic_inw(port);
- delay();
+ ctrl_delay();
return v;
}
-unsigned int generic_inl_p(unsigned long port)
+u32 generic_inl_p(unsigned long port)
{
- unsigned long v = *(volatile unsigned long*)PORT2ADDR(port);
+ unsigned long v = generic_inl(port);
- delay();
+ ctrl_delay();
return v;
}
* convert the port address to real address once.
*/
-void generic_insb(unsigned long port, void *buffer, unsigned long count)
+void generic_insb(unsigned long port, void *dst, unsigned long count)
{
- volatile unsigned char *port_addr;
- unsigned char *buf=buffer;
-
- port_addr = (volatile unsigned char *)PORT2ADDR(port);
-
- while(count--)
- *buf++ = *port_addr;
+ __raw_readsb(__ioport_map(port, 1), dst, count);
+ dummy_read();
}
-void generic_insw(unsigned long port, void *buffer, unsigned long count)
+void generic_insw(unsigned long port, void *dst, unsigned long count)
{
- volatile unsigned short *port_addr;
- unsigned short *buf=buffer;
-
- port_addr = (volatile unsigned short *)PORT2ADDR(port);
-
- while(count--)
- *buf++ = *port_addr;
-#ifdef SH3_PCMCIA_BUG_WORKAROUND
- ctrl_inb (DUMMY_READ_AREA6);
-#endif
+ __raw_readsw(__ioport_map(port, 2), dst, count);
+ dummy_read();
}
-void generic_insl(unsigned long port, void *buffer, unsigned long count)
+void generic_insl(unsigned long port, void *dst, unsigned long count)
{
- volatile unsigned long *port_addr;
- unsigned long *buf=buffer;
-
- port_addr = (volatile unsigned long *)PORT2ADDR(port);
-
- while(count--)
- *buf++ = *port_addr;
-#ifdef SH3_PCMCIA_BUG_WORKAROUND
- ctrl_inb (DUMMY_READ_AREA6);
-#endif
+ __raw_readsl(__ioport_map(port, 4), dst, count);
+ dummy_read();
}
-void generic_outb(unsigned char b, unsigned long port)
+void generic_outb(u8 b, unsigned long port)
{
- *(volatile unsigned char*)PORT2ADDR(port) = b;
+ __raw_writeb(b, __ioport_map(port, 1));
}
-void generic_outw(unsigned short b, unsigned long port)
+void generic_outw(u16 b, unsigned long port)
{
- *(volatile unsigned short*)PORT2ADDR(port) = b;
+ __raw_writew(b, __ioport_map(port, 2));
}
-void generic_outl(unsigned int b, unsigned long port)
+void generic_outl(u32 b, unsigned long port)
{
- *(volatile unsigned long*)PORT2ADDR(port) = b;
+ __raw_writel(b, __ioport_map(port, 4));
}
-void generic_outb_p(unsigned char b, unsigned long port)
+void generic_outb_p(u8 b, unsigned long port)
{
- *(volatile unsigned char*)PORT2ADDR(port) = b;
- delay();
+ generic_outb(b, port);
+ ctrl_delay();
}
-void generic_outw_p(unsigned short b, unsigned long port)
+void generic_outw_p(u16 b, unsigned long port)
{
- *(volatile unsigned short*)PORT2ADDR(port) = b;
- delay();
+ generic_outw(b, port);
+ ctrl_delay();
}
-void generic_outl_p(unsigned int b, unsigned long port)
+void generic_outl_p(u32 b, unsigned long port)
{
- *(volatile unsigned long*)PORT2ADDR(port) = b;
- delay();
+ generic_outl(b, port);
+ ctrl_delay();
}
/*
* 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 *buffer, unsigned long count)
-{
- volatile unsigned char *port_addr;
- const unsigned char *buf=buffer;
-
- port_addr = (volatile unsigned char *)PORT2ADDR(port);
-
- while(count--)
- *port_addr = *buf++;
-}
-
-void generic_outsw(unsigned long port, const void *buffer, unsigned long count)
-{
- volatile unsigned short *port_addr;
- const unsigned short *buf=buffer;
-
- port_addr = (volatile unsigned short *)PORT2ADDR(port);
-
- while(count--)
- *port_addr = *buf++;
-
-#ifdef SH3_PCMCIA_BUG_WORKAROUND
- ctrl_inb (DUMMY_READ_AREA6);
-#endif
-}
-
-void generic_outsl(unsigned long port, const void *buffer, unsigned long count)
-{
- volatile unsigned long *port_addr;
- const unsigned long *buf=buffer;
-
- port_addr = (volatile unsigned long *)PORT2ADDR(port);
-
- while(count--)
- *port_addr = *buf++;
-
-#ifdef SH3_PCMCIA_BUG_WORKAROUND
- ctrl_inb (DUMMY_READ_AREA6);
-#endif
-}
-
-unsigned char generic_readb(unsigned long addr)
+void generic_outsb(unsigned long port, const void *src, unsigned long count)
{
- return *(volatile unsigned char*)addr;
+ __raw_writesb(__ioport_map(port, 1), src, count);
+ dummy_read();
}
-unsigned short generic_readw(unsigned long addr)
+void generic_outsw(unsigned long port, const void *src, unsigned long count)
{
- return *(volatile unsigned short*)addr;
+ __raw_writesw(__ioport_map(port, 2), src, count);
+ dummy_read();
}
-unsigned int generic_readl(unsigned long addr)
+void generic_outsl(unsigned long port, const void *src, unsigned long count)
{
- return *(volatile unsigned long*)addr;
+ __raw_writesl(__ioport_map(port, 4), src, count);
+ dummy_read();
}
-void generic_writeb(unsigned char b, unsigned long addr)
+void __iomem *generic_ioport_map(unsigned long addr, unsigned int size)
{
- *(volatile unsigned char*)addr = b;
-}
-
-void generic_writew(unsigned short b, unsigned long addr)
-{
- *(volatile unsigned short*)addr = b;
-}
-
-void generic_writel(unsigned int b, unsigned long addr)
-{
- *(volatile unsigned long*)addr = b;
-}
-
-void * generic_ioremap(unsigned long offset, unsigned long size)
-{
- return (void *) P2SEGADDR(offset);
-}
-EXPORT_SYMBOL(generic_ioremap);
+#ifdef P1SEG
+ if (PXSEG(addr) >= P1SEG)
+ return (void __iomem *)addr;
+#endif
-void generic_iounmap(void *addr)
-{
+ return (void __iomem *)(addr + generic_io_base);
}
-EXPORT_SYMBOL(generic_iounmap);
-unsigned long generic_isa_port2addr(unsigned long offset)
+void generic_ioport_unmap(void __iomem *addr)
{
- return offset + generic_io_base;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff