From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/sh/kernel/io_generic.c | 243 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 243 insertions(+) create mode 100644 arch/sh/kernel/io_generic.c (limited to 'arch/sh/kernel/io_generic.c') diff --git a/arch/sh/kernel/io_generic.c b/arch/sh/kernel/io_generic.c new file mode 100644 index 00000000000..a911b0149d1 --- /dev/null +++ b/arch/sh/kernel/io_generic.c @@ -0,0 +1,243 @@ +/* $Id: io_generic.c,v 1.2 2003/05/04 19:29:53 lethal Exp $ + * + * linux/arch/sh/kernel/io_generic.c + * + * Copyright (C) 2000 Niibe Yutaka + * + * 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 +#include +#include + +#if defined(CONFIG_CPU_SH3) +/* I'm not sure SH7709 has this kind of bug */ +#define SH3_PCMCIA_BUG_WORKAROUND 1 +#define DUMMY_READ_AREA6 0xba000000 +#endif + +#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x)) + +unsigned long generic_io_base; + +static inline void delay(void) +{ + ctrl_inw(0xa0000000); +} + +unsigned char generic_inb(unsigned long port) +{ + return *(volatile unsigned char*)PORT2ADDR(port); +} + +unsigned short generic_inw(unsigned long port) +{ + return *(volatile unsigned short*)PORT2ADDR(port); +} + +unsigned int generic_inl(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); + + delay(); + return v; +} + +unsigned short generic_inw_p(unsigned long port) +{ + unsigned long v = *(volatile unsigned short*)PORT2ADDR(port); + + delay(); + return v; +} + +unsigned int generic_inl_p(unsigned long port) +{ + unsigned long v = *(volatile unsigned long*)PORT2ADDR(port); + + 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 *buffer, unsigned long count) +{ + volatile unsigned char *port_addr; + unsigned char *buf=buffer; + + port_addr = (volatile unsigned char *)PORT2ADDR(port); + + while(count--) + *buf++ = *port_addr; +} + +void generic_insw(unsigned long port, void *buffer, 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 +} + +void generic_insl(unsigned long port, void *buffer, 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 +} + +void generic_outb(unsigned char b, unsigned long port) +{ + *(volatile unsigned char*)PORT2ADDR(port) = b; +} + +void generic_outw(unsigned short b, unsigned long port) +{ + *(volatile unsigned short*)PORT2ADDR(port) = b; +} + +void generic_outl(unsigned int b, unsigned long port) +{ + *(volatile unsigned long*)PORT2ADDR(port) = b; +} + +void generic_outb_p(unsigned char b, unsigned long port) +{ + *(volatile unsigned char*)PORT2ADDR(port) = b; + delay(); +} + +void generic_outw_p(unsigned short b, unsigned long port) +{ + *(volatile unsigned short*)PORT2ADDR(port) = b; + delay(); +} + +void generic_outl_p(unsigned int b, unsigned long port) +{ + *(volatile unsigned long*)PORT2ADDR(port) = b; + 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 *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) +{ + return *(volatile unsigned char*)addr; +} + +unsigned short generic_readw(unsigned long addr) +{ + return *(volatile unsigned short*)addr; +} + +unsigned int generic_readl(unsigned long addr) +{ + return *(volatile unsigned long*)addr; +} + +void generic_writeb(unsigned char b, unsigned long addr) +{ + *(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); + +void generic_iounmap(void *addr) +{ +} +EXPORT_SYMBOL(generic_iounmap); + +unsigned long generic_isa_port2addr(unsigned long offset) +{ + return offset + generic_io_base; +} -- cgit v1.2.3