mirror of https://gitee.com/openkylin/linux.git
[PATCH] sh: I/O routine cleanups and ioremap() overhaul
This introduces a few changes in the way that the I/O routines are defined on SH, specifically so that things like the iomap API properly wrap through the machvec for board-specific quirks. In addition to this, the old p3_ioremap() work is converted to a more generic __ioremap() that will map through the PMB if it's available, or fall back on page tables for everything else. An alpha-like IO_CONCAT is also added so we can start to clean up the board-specific io.h mess, which will be handled in board update patches.. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paul Mundt
Linus Torvalds
parent
bf3a00f88c
commit
b66c1a3919
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@ -2,58 +2,73 @@
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* linux/arch/sh/kernel/io.c
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*
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* Copyright (C) 2000 Stuart Menefy
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* Copyright (C) 2005 Paul Mundt
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*
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* Provide real functions which expand to whatever the header file defined.
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* Also definitions of machine independent IO functions.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <asm/io.h>
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#include <linux/module.h>
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#include <asm/machvec.h>
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#include <asm/io.h>
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/*
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* Copy data from IO memory space to "real" memory space.
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* This needs to be optimized.
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*/
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void memcpy_fromio(void * to, unsigned long from, unsigned long count)
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void memcpy_fromio(void *to, volatile void __iomem *from, unsigned long count)
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{
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char *p = to;
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while (count) {
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count--;
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*p = readb(from);
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*p = readb((void __iomem *)from);
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p++;
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from++;
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}
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}
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EXPORT_SYMBOL(memcpy_fromio);
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/*
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* Copy data from "real" memory space to IO memory space.
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* This needs to be optimized.
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*/
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void memcpy_toio(unsigned long to, const void * from, unsigned long count)
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void memcpy_toio(volatile void __iomem *to, const void *from, unsigned long count)
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{
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const char *p = from;
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while (count) {
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count--;
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writeb(*p, to);
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writeb(*p, (void __iomem *)to);
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p++;
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to++;
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}
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}
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EXPORT_SYMBOL(memcpy_toio);
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/*
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* "memset" on IO memory space.
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* This needs to be optimized.
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*/
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void memset_io(unsigned long dst, int c, unsigned long count)
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void memset_io(volatile void __iomem *dst, int c, unsigned long count)
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{
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while (count) {
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count--;
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writeb(c, dst);
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writeb(c, (void __iomem *)dst);
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dst++;
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}
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}
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EXPORT_SYMBOL(memcpy_fromio);
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EXPORT_SYMBOL(memcpy_toio);
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EXPORT_SYMBOL(memset_io);
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void __iomem *ioport_map(unsigned long port, unsigned int nr)
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{
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return sh_mv.mv_ioport_map(port, nr);
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}
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EXPORT_SYMBOL(ioport_map);
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void ioport_unmap(void __iomem *addr)
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{
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sh_mv.mv_ioport_unmap(addr);
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}
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EXPORT_SYMBOL(ioport_unmap);
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@ -3,6 +3,7 @@
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* linux/arch/sh/kernel/io_generic.c
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*
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* Copyright (C) 2000 Niibe Yutaka
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* Copyright (C) 2005 Paul Mundt
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*
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* Generic I/O routine. These can be used where a machine specific version
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* is not required.
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@ -10,21 +11,20 @@
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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*/
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#include <linux/module.h>
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#include <asm/io.h>
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#include <asm/machvec.h>
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#include <linux/module.h>
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#if defined(CONFIG_CPU_SH3)
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#ifdef CONFIG_CPU_SH3
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/* SH3 has a PCMCIA bug that needs a dummy read from area 6 for a
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* workaround. */
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/* I'm not sure SH7709 has this kind of bug */
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#define SH3_PCMCIA_BUG_WORKAROUND 1
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#define DUMMY_READ_AREA6 0xba000000
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#define dummy_read() ctrl_inb(0xba000000)
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#else
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#define dummy_read()
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#endif
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#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x))
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unsigned long generic_io_base;
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static inline void delay(void)
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@ -32,40 +32,40 @@ static inline void delay(void)
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ctrl_inw(0xa0000000);
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}
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unsigned char generic_inb(unsigned long port)
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u8 generic_inb(unsigned long port)
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{
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return *(volatile unsigned char*)PORT2ADDR(port);
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return ctrl_inb((unsigned long __force)ioport_map(port, 1));
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}
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unsigned short generic_inw(unsigned long port)
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u16 generic_inw(unsigned long port)
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{
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return *(volatile unsigned short*)PORT2ADDR(port);
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return ctrl_inw((unsigned long __force)ioport_map(port, 2));
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}
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unsigned int generic_inl(unsigned long port)
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u32 generic_inl(unsigned long port)
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{
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return *(volatile unsigned long*)PORT2ADDR(port);
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return ctrl_inl((unsigned long __force)ioport_map(port, 4));
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}
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unsigned char generic_inb_p(unsigned long port)
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u8 generic_inb_p(unsigned long port)
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{
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unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);
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unsigned long v = generic_inb(port);
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delay();
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return v;
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}
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unsigned short generic_inw_p(unsigned long port)
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u16 generic_inw_p(unsigned long port)
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{
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unsigned long v = *(volatile unsigned short*)PORT2ADDR(port);
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unsigned long v = generic_inw(port);
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delay();
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return v;
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}
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unsigned int generic_inl_p(unsigned long port)
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u32 generic_inl_p(unsigned long port)
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{
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unsigned long v = *(volatile unsigned long*)PORT2ADDR(port);
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unsigned long v = generic_inl(port);
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delay();
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return v;
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@ -77,75 +77,70 @@ unsigned int generic_inl_p(unsigned long port)
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* convert the port address to real address once.
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*/
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void generic_insb(unsigned long port, void *buffer, unsigned long count)
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void generic_insb(unsigned long port, void *dst, unsigned long count)
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{
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volatile unsigned char *port_addr;
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unsigned char *buf=buffer;
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port_addr = (volatile unsigned char *)PORT2ADDR(port);
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volatile u8 *port_addr;
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u8 *buf = dst;
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port_addr = (volatile u8 *)ioport_map(port, 1);
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while (count--)
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*buf++ = *port_addr;
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}
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void generic_insw(unsigned long port, void *buffer, unsigned long count)
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void generic_insw(unsigned long port, void *dst, unsigned long count)
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{
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volatile unsigned short *port_addr;
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unsigned short *buf=buffer;
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port_addr = (volatile unsigned short *)PORT2ADDR(port);
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volatile u16 *port_addr;
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u16 *buf = dst;
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port_addr = (volatile u16 *)ioport_map(port, 2);
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while (count--)
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*buf++ = *port_addr;
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#ifdef SH3_PCMCIA_BUG_WORKAROUND
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ctrl_inb (DUMMY_READ_AREA6);
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#endif
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dummy_read();
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}
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void generic_insl(unsigned long port, void *buffer, unsigned long count)
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void generic_insl(unsigned long port, void *dst, unsigned long count)
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{
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volatile unsigned long *port_addr;
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unsigned long *buf=buffer;
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port_addr = (volatile unsigned long *)PORT2ADDR(port);
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volatile u32 *port_addr;
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u32 *buf = dst;
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port_addr = (volatile u32 *)ioport_map(port, 4);
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while (count--)
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*buf++ = *port_addr;
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#ifdef SH3_PCMCIA_BUG_WORKAROUND
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ctrl_inb (DUMMY_READ_AREA6);
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#endif
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dummy_read();
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}
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void generic_outb(unsigned char b, unsigned long port)
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void generic_outb(u8 b, unsigned long port)
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{
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*(volatile unsigned char*)PORT2ADDR(port) = b;
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ctrl_outb(b, (unsigned long __force)ioport_map(port, 1));
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}
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void generic_outw(unsigned short b, unsigned long port)
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void generic_outw(u16 b, unsigned long port)
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{
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*(volatile unsigned short*)PORT2ADDR(port) = b;
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ctrl_outw(b, (unsigned long __force)ioport_map(port, 2));
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}
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void generic_outl(unsigned int b, unsigned long port)
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void generic_outl(u32 b, unsigned long port)
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{
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*(volatile unsigned long*)PORT2ADDR(port) = b;
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ctrl_outl(b, (unsigned long __force)ioport_map(port, 4));
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}
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void generic_outb_p(unsigned char b, unsigned long port)
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void generic_outb_p(u8 b, unsigned long port)
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{
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*(volatile unsigned char*)PORT2ADDR(port) = b;
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generic_outb(b, port);
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delay();
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}
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void generic_outw_p(unsigned short b, unsigned long port)
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void generic_outw_p(u16 b, unsigned long port)
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{
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*(volatile unsigned short*)PORT2ADDR(port) = b;
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generic_outw(b, port);
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delay();
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}
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void generic_outl_p(unsigned int b, unsigned long port)
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void generic_outl_p(u32 b, unsigned long port)
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{
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*(volatile unsigned long*)PORT2ADDR(port) = b;
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generic_outl(b, port);
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delay();
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}
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@ -154,90 +149,77 @@ void generic_outl_p(unsigned int b, unsigned long port)
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* address. However as the port address doesn't change we only need to
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* convert the port address to real address once.
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*/
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void generic_outsb(unsigned long port, const void *buffer, unsigned long count)
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void generic_outsb(unsigned long port, const void *src, unsigned long count)
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{
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volatile unsigned char *port_addr;
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const unsigned char *buf=buffer;
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volatile u8 *port_addr;
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const u8 *buf = src;
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port_addr = (volatile unsigned char *)PORT2ADDR(port);
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port_addr = (volatile u8 __force *)ioport_map(port, 1);
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while (count--)
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*port_addr = *buf++;
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}
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void generic_outsw(unsigned long port, const void *buffer, unsigned long count)
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void generic_outsw(unsigned long port, const void *src, unsigned long count)
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{
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volatile unsigned short *port_addr;
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const unsigned short *buf=buffer;
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volatile u16 *port_addr;
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const u16 *buf = src;
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port_addr = (volatile unsigned short *)PORT2ADDR(port);
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port_addr = (volatile u16 __force *)ioport_map(port, 2);
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while (count--)
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*port_addr = *buf++;
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#ifdef SH3_PCMCIA_BUG_WORKAROUND
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ctrl_inb (DUMMY_READ_AREA6);
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#endif
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dummy_read();
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}
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void generic_outsl(unsigned long port, const void *buffer, unsigned long count)
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void generic_outsl(unsigned long port, const void *src, unsigned long count)
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{
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volatile unsigned long *port_addr;
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const unsigned long *buf=buffer;
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port_addr = (volatile unsigned long *)PORT2ADDR(port);
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volatile u32 *port_addr;
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const u32 *buf = src;
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port_addr = (volatile u32 __force *)ioport_map(port, 4);
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while (count--)
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*port_addr = *buf++;
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#ifdef SH3_PCMCIA_BUG_WORKAROUND
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ctrl_inb (DUMMY_READ_AREA6);
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#endif
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dummy_read();
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}
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unsigned char generic_readb(unsigned long addr)
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u8 generic_readb(void __iomem *addr)
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{
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return *(volatile unsigned char*)addr;
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return ctrl_inb((unsigned long __force)addr);
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}
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unsigned short generic_readw(unsigned long addr)
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u16 generic_readw(void __iomem *addr)
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{
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return *(volatile unsigned short*)addr;
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return ctrl_inw((unsigned long __force)addr);
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}
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unsigned int generic_readl(unsigned long addr)
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u32 generic_readl(void __iomem *addr)
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{
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return *(volatile unsigned long*)addr;
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return ctrl_inl((unsigned long __force)addr);
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}
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void generic_writeb(unsigned char b, unsigned long addr)
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void generic_writeb(u8 b, void __iomem *addr)
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{
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*(volatile unsigned char*)addr = b;
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ctrl_outb(b, (unsigned long __force)addr);
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}
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void generic_writew(unsigned short b, unsigned long addr)
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void generic_writew(u16 b, void __iomem *addr)
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{
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*(volatile unsigned short*)addr = b;
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ctrl_outw(b, (unsigned long __force)addr);
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}
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void generic_writel(unsigned int b, unsigned long addr)
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void generic_writel(u32 b, void __iomem *addr)
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{
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*(volatile unsigned long*)addr = b;
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ctrl_outl(b, (unsigned long __force)addr);
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}
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void * generic_ioremap(unsigned long offset, unsigned long size)
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void __iomem *generic_ioport_map(unsigned long addr, unsigned int size)
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{
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return (void *) P2SEGADDR(offset);
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return (void __iomem *)(addr + generic_io_base);
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}
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EXPORT_SYMBOL(generic_ioremap);
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void generic_iounmap(void *addr)
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void generic_ioport_unmap(void __iomem *addr)
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{
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}
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EXPORT_SYMBOL(generic_iounmap);
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unsigned long generic_isa_port2addr(unsigned long offset)
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{
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return offset + generic_io_base;
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}
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@ -6,13 +6,19 @@
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* 640k-1MB IO memory area on PC's
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*
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* (C) Copyright 1995 1996 Linus Torvalds
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* (C) Copyright 2005, 2006 Paul Mundt
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*
|
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* This file is subject to the terms and conditions of the GNU General
|
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* Public License. See the file "COPYING" in the main directory of this
|
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* archive for more details.
|
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*/
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#include <linux/vmalloc.h>
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <asm/io.h>
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#include <asm/page.h>
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#include <asm/pgalloc.h>
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#include <asm/addrspace.h>
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#include <asm/cacheflush.h>
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#include <asm/tlbflush.h>
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@ -80,9 +86,15 @@ int remap_area_pages(unsigned long address, unsigned long phys_addr,
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if (address >= end)
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BUG();
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do {
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pud_t *pud;
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pmd_t *pmd;
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pmd = pmd_alloc(&init_mm, dir, address);
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error = -ENOMEM;
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pud = pud_alloc(&init_mm, dir, address);
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if (!pud)
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break;
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pmd = pmd_alloc(&init_mm, pud, address);
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if (!pmd)
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break;
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if (remap_area_pmd(pmd, address, end - address,
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@ -96,10 +108,6 @@ int remap_area_pages(unsigned long address, unsigned long phys_addr,
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return error;
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}
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/*
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* Generic mapping function (not visible outside):
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*/
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/*
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* Remap an arbitrary physical address space into the kernel virtual
|
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* address space. Needed when the kernel wants to access high addresses
|
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|
|
@ -109,11 +117,11 @@ int remap_area_pages(unsigned long address, unsigned long phys_addr,
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* have to convert them into an offset in a page-aligned mapping, but the
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* caller shouldn't need to know that small detail.
|
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*/
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void * p3_ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
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void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
|
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unsigned long flags)
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{
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void * addr;
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struct vm_struct * area;
|
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unsigned long offset, last_addr;
|
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unsigned long offset, last_addr, addr, orig_addr;
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|
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/* Don't allow wraparound or zero size */
|
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last_addr = phys_addr + size - 1;
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|
|
@ -124,7 +132,7 @@ void * p3_ioremap(unsigned long phys_addr, unsigned long size, unsigned long fla
|
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* Don't remap the low PCI/ISA area, it's always mapped..
|
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*/
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if (phys_addr >= 0xA0000 && last_addr < 0x100000)
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return phys_to_virt(phys_addr);
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return (void __iomem *)phys_to_virt(phys_addr);
|
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|
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/*
|
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* Don't allow anybody to remap normal RAM that we're using..
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|
|
@ -146,16 +154,71 @@ void * p3_ioremap(unsigned long phys_addr, unsigned long size, unsigned long fla
|
|||
if (!area)
|
||||
return NULL;
|
||||
area->phys_addr = phys_addr;
|
||||
addr = area->addr;
|
||||
if (remap_area_pages((unsigned long) addr, phys_addr, size, flags)) {
|
||||
vunmap(addr);
|
||||
orig_addr = addr = (unsigned long)area->addr;
|
||||
|
||||
#ifdef CONFIG_32BIT
|
||||
/*
|
||||
* First try to remap through the PMB once a valid VMA has been
|
||||
* established. Smaller allocations (or the rest of the size
|
||||
* remaining after a PMB mapping due to the size not being
|
||||
* perfectly aligned on a PMB size boundary) are then mapped
|
||||
* through the UTLB using conventional page tables.
|
||||
*
|
||||
* PMB entries are all pre-faulted.
|
||||
*/
|
||||
if (unlikely(size >= 0x1000000)) {
|
||||
unsigned long mapped = pmb_remap(addr, phys_addr, size, flags);
|
||||
|
||||
if (likely(mapped)) {
|
||||
addr += mapped;
|
||||
phys_addr += mapped;
|
||||
size -= mapped;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
if (likely(size))
|
||||
if (remap_area_pages(addr, phys_addr, size, flags)) {
|
||||
vunmap((void *)orig_addr);
|
||||
return NULL;
|
||||
}
|
||||
return (void *) (offset + (char *)addr);
|
||||
|
||||
return (void __iomem *)(offset + (char *)orig_addr);
|
||||
}
|
||||
EXPORT_SYMBOL(__ioremap);
|
||||
|
||||
void __iounmap(void __iomem *addr)
|
||||
{
|
||||
unsigned long vaddr = (unsigned long __force)addr;
|
||||
struct vm_struct *p;
|
||||
|
||||
if (PXSEG(vaddr) < P3SEG)
|
||||
return;
|
||||
|
||||
#ifdef CONFIG_32BIT
|
||||
/*
|
||||
* Purge any PMB entries that may have been established for this
|
||||
* mapping, then proceed with conventional VMA teardown.
|
||||
*
|
||||
* XXX: Note that due to the way that remove_vm_area() does
|
||||
* matching of the resultant VMA, we aren't able to fast-forward
|
||||
* the address past the PMB space until the end of the VMA where
|
||||
* the page tables reside. As such, unmap_vm_area() will be
|
||||
* forced to linearly scan over the area until it finds the page
|
||||
* tables where PTEs that need to be unmapped actually reside,
|
||||
* which is far from optimal. Perhaps we need to use a separate
|
||||
* VMA for the PMB mappings?
|
||||
* -- PFM.
|
||||
*/
|
||||
pmb_unmap(vaddr);
|
||||
#endif
|
||||
|
||||
p = remove_vm_area((void *)(vaddr & PAGE_MASK));
|
||||
if (!p) {
|
||||
printk(KERN_ERR "%s: bad address %p\n", __FUNCTION__, addr);
|
||||
return;
|
||||
}
|
||||
|
||||
void p3_iounmap(void *addr)
|
||||
{
|
||||
if (addr > high_memory)
|
||||
vfree((void *)(PAGE_MASK & (unsigned long)addr));
|
||||
kfree(p);
|
||||
}
|
||||
EXPORT_SYMBOL(__iounmap);
|
||||
|
|
|
|||
|
|
@ -23,19 +23,27 @@
|
|||
* inb by default expands to _inb, but the machine specific code may
|
||||
* define it to __inb if it chooses.
|
||||
*/
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <asm/cache.h>
|
||||
#include <asm/system.h>
|
||||
#include <asm/addrspace.h>
|
||||
#include <asm/machvec.h>
|
||||
#include <linux/config.h>
|
||||
#include <asm/pgtable.h>
|
||||
#include <asm-generic/iomap.h>
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
/*
|
||||
* Depending on which platform we are running on, we need different
|
||||
* I/O functions.
|
||||
*/
|
||||
#define __IO_PREFIX generic
|
||||
#include <asm/io_generic.h>
|
||||
|
||||
#define maybebadio(port) \
|
||||
printk(KERN_ERR "bad PC-like io %s:%u for port 0x%lx at 0x%08x\n", \
|
||||
__FUNCTION__, __LINE__, (port), (u32)__builtin_return_address(0))
|
||||
|
||||
#ifdef __KERNEL__
|
||||
/*
|
||||
* Since boards are able to define their own set of I/O routines through
|
||||
* their respective machine vector, we always wrap through the mv.
|
||||
|
|
@ -72,11 +80,6 @@
|
|||
#define __writew(v,a) sh_mv.mv_writew((v),(a))
|
||||
#define __writel(v,a) sh_mv.mv_writel((v),(a))
|
||||
|
||||
# define __ioremap(a,s) sh_mv.mv_ioremap((a), (s))
|
||||
# define __iounmap(a) sh_mv.mv_iounmap((a))
|
||||
|
||||
# define __isa_port2addr(a) sh_mv.mv_isa_port2addr(a)
|
||||
|
||||
#define inb __inb
|
||||
#define inw __inw
|
||||
#define inl __inl
|
||||
|
|
@ -98,59 +101,71 @@
|
|||
#define outsw __outsw
|
||||
#define outsl __outsl
|
||||
|
||||
# define __raw_readb __readb
|
||||
# define __raw_readw __readw
|
||||
# define __raw_readl __readl
|
||||
# define __raw_writeb __writeb
|
||||
# define __raw_writew __writew
|
||||
# define __raw_writel __writel
|
||||
#define __raw_readb(a) __readb((void __iomem *)(a))
|
||||
#define __raw_readw(a) __readw((void __iomem *)(a))
|
||||
#define __raw_readl(a) __readl((void __iomem *)(a))
|
||||
#define __raw_writeb(v, a) __writeb(v, (void __iomem *)(a))
|
||||
#define __raw_writew(v, a) __writew(v, (void __iomem *)(a))
|
||||
#define __raw_writel(v, a) __writel(v, (void __iomem *)(a))
|
||||
|
||||
/*
|
||||
* The platform header files may define some of these macros to use
|
||||
* the inlined versions where appropriate. These macros may also be
|
||||
* redefined by userlevel programs.
|
||||
*/
|
||||
#ifdef __raw_readb
|
||||
# define readb(a) ({ unsigned long r_ = __raw_readb((unsigned long)a); mb(); r_; })
|
||||
#ifdef __readb
|
||||
# define readb(a) ({ unsigned long r_ = __raw_readb(a); mb(); r_; })
|
||||
#endif
|
||||
#ifdef __raw_readw
|
||||
# define readw(a) ({ unsigned long r_ = __raw_readw((unsigned long)a); mb(); r_; })
|
||||
# define readw(a) ({ unsigned long r_ = __raw_readw(a); mb(); r_; })
|
||||
#endif
|
||||
#ifdef __raw_readl
|
||||
# define readl(a) ({ unsigned long r_ = __raw_readl((unsigned long)a); mb(); r_; })
|
||||
# define readl(a) ({ unsigned long r_ = __raw_readl(a); mb(); r_; })
|
||||
#endif
|
||||
|
||||
#ifdef __raw_writeb
|
||||
# define writeb(v,a) ({ __raw_writeb((v),(unsigned long)(a)); mb(); })
|
||||
# define writeb(v,a) ({ __raw_writeb((v),(a)); mb(); })
|
||||
#endif
|
||||
#ifdef __raw_writew
|
||||
# define writew(v,a) ({ __raw_writew((v),(unsigned long)(a)); mb(); })
|
||||
# define writew(v,a) ({ __raw_writew((v),(a)); mb(); })
|
||||
#endif
|
||||
#ifdef __raw_writel
|
||||
# define writel(v,a) ({ __raw_writel((v),(unsigned long)(a)); mb(); })
|
||||
# define writel(v,a) ({ __raw_writel((v),(a)); mb(); })
|
||||
#endif
|
||||
|
||||
#define readb_relaxed(a) readb(a)
|
||||
#define readw_relaxed(a) readw(a)
|
||||
#define readl_relaxed(a) readl(a)
|
||||
|
||||
#define mmiowb()
|
||||
/* Simple MMIO */
|
||||
#define ioread8(a) readb(a)
|
||||
#define ioread16(a) readw(a)
|
||||
#define ioread16be(a) be16_to_cpu(__raw_readw((a)))
|
||||
#define ioread32(a) readl(a)
|
||||
#define ioread32be(a) be32_to_cpu(__raw_readl((a)))
|
||||
|
||||
/*
|
||||
* If the platform has PC-like I/O, this function converts the offset into
|
||||
* an address.
|
||||
*/
|
||||
static __inline__ unsigned long isa_port2addr(unsigned long offset)
|
||||
{
|
||||
return __isa_port2addr(offset);
|
||||
}
|
||||
#define iowrite8(v,a) writeb((v),(a))
|
||||
#define iowrite16(v,a) writew((v),(a))
|
||||
#define iowrite16be(v,a) __raw_writew(cpu_to_be16((v)),(a))
|
||||
#define iowrite32(v,a) writel((v),(a))
|
||||
#define iowrite32be(v,a) __raw_writel(cpu_to_be32((v)),(a))
|
||||
|
||||
#define ioread8_rep(a,d,c) insb((a),(d),(c))
|
||||
#define ioread16_rep(a,d,c) insw((a),(d),(c))
|
||||
#define ioread32_rep(a,d,c) insl((a),(d),(c))
|
||||
|
||||
#define iowrite8_rep(a,s,c) outsb((a),(s),(c))
|
||||
#define iowrite16_rep(a,s,c) outsw((a),(s),(c))
|
||||
#define iowrite32_rep(a,s,c) outsl((a),(s),(c))
|
||||
|
||||
#define mmiowb() wmb() /* synco on SH-4A, otherwise a nop */
|
||||
|
||||
/*
|
||||
* This function provides a method for the generic case where a board-specific
|
||||
* isa_port2addr simply needs to return the port + some arbitrary port base.
|
||||
* ioport_map simply needs to return the port + some arbitrary port base.
|
||||
*
|
||||
* We use this at board setup time to implicitly set the port base, and
|
||||
* as a result, we can use the generic isa_port2addr.
|
||||
* as a result, we can use the generic ioport_map.
|
||||
*/
|
||||
static inline void __set_io_port_base(unsigned long pbase)
|
||||
{
|
||||
|
|
@ -159,51 +174,52 @@ static inline void __set_io_port_base(unsigned long pbase)
|
|||
generic_io_base = pbase;
|
||||
}
|
||||
|
||||
#define isa_readb(a) readb(isa_port2addr(a))
|
||||
#define isa_readw(a) readw(isa_port2addr(a))
|
||||
#define isa_readl(a) readl(isa_port2addr(a))
|
||||
#define isa_writeb(b,a) writeb(b,isa_port2addr(a))
|
||||
#define isa_writew(w,a) writew(w,isa_port2addr(a))
|
||||
#define isa_writel(l,a) writel(l,isa_port2addr(a))
|
||||
#define isa_readb(a) readb(ioport_map(a, 1))
|
||||
#define isa_readw(a) readw(ioport_map(a, 2))
|
||||
#define isa_readl(a) readl(ioport_map(a, 4))
|
||||
#define isa_writeb(b,a) writeb(b,ioport_map(a, 1))
|
||||
#define isa_writew(w,a) writew(w,ioport_map(a, 2))
|
||||
#define isa_writel(l,a) writel(l,ioport_map(a, 4))
|
||||
|
||||
#define isa_memset_io(a,b,c) \
|
||||
memset((void *)(isa_port2addr((unsigned long)a)),(b),(c))
|
||||
memset((void *)(ioport_map((unsigned long)(a), 1)),(b),(c))
|
||||
#define isa_memcpy_fromio(a,b,c) \
|
||||
memcpy((a),(void *)(isa_port2addr((unsigned long)(b))),(c))
|
||||
memcpy((a),(void *)(ioport_map((unsigned long)(b), 1)),(c))
|
||||
#define isa_memcpy_toio(a,b,c) \
|
||||
memcpy((void *)(isa_port2addr((unsigned long)(a))),(b),(c))
|
||||
memcpy((void *)(ioport_map((unsigned long)(a), 1)),(b),(c))
|
||||
|
||||
/* We really want to try and get these to memcpy etc */
|
||||
extern void memcpy_fromio(void *, unsigned long, unsigned long);
|
||||
extern void memcpy_toio(unsigned long, const void *, unsigned long);
|
||||
extern void memset_io(unsigned long, int, unsigned long);
|
||||
extern void memcpy_fromio(void *, volatile void __iomem *, unsigned long);
|
||||
extern void memcpy_toio(volatile void __iomem *, const void *, unsigned long);
|
||||
extern void memset_io(volatile void __iomem *, int, unsigned long);
|
||||
|
||||
/* SuperH on-chip I/O functions */
|
||||
static __inline__ unsigned char ctrl_inb(unsigned long addr)
|
||||
static inline unsigned char ctrl_inb(unsigned long addr)
|
||||
{
|
||||
return *(volatile unsigned char*)addr;
|
||||
}
|
||||
|
||||
static __inline__ unsigned short ctrl_inw(unsigned long addr)
|
||||
static inline unsigned short ctrl_inw(unsigned long addr)
|
||||
{
|
||||
return *(volatile unsigned short*)addr;
|
||||
}
|
||||
|
||||
static __inline__ unsigned int ctrl_inl(unsigned long addr)
|
||||
static inline unsigned int ctrl_inl(unsigned long addr)
|
||||
{
|
||||
return *(volatile unsigned long*)addr;
|
||||
}
|
||||
|
||||
static __inline__ void ctrl_outb(unsigned char b, unsigned long addr)
|
||||
static inline void ctrl_outb(unsigned char b, unsigned long addr)
|
||||
{
|
||||
*(volatile unsigned char*)addr = b;
|
||||
}
|
||||
|
||||
static __inline__ void ctrl_outw(unsigned short b, unsigned long addr)
|
||||
static inline void ctrl_outw(unsigned short b, unsigned long addr)
|
||||
{
|
||||
*(volatile unsigned short*)addr = b;
|
||||
}
|
||||
|
||||
static __inline__ void ctrl_outl(unsigned int b, unsigned long addr)
|
||||
static inline void ctrl_outl(unsigned int b, unsigned long addr)
|
||||
{
|
||||
*(volatile unsigned long*)addr = b;
|
||||
}
|
||||
|
|
@ -214,12 +230,12 @@ static __inline__ void ctrl_outl(unsigned int b, unsigned long addr)
|
|||
* Change virtual addresses to physical addresses and vv.
|
||||
* These are trivial on the 1:1 Linux/SuperH mapping
|
||||
*/
|
||||
static __inline__ unsigned long virt_to_phys(volatile void * address)
|
||||
static inline unsigned long virt_to_phys(volatile void *address)
|
||||
{
|
||||
return PHYSADDR(address);
|
||||
}
|
||||
|
||||
static __inline__ void * phys_to_virt(unsigned long address)
|
||||
static inline void *phys_to_virt(unsigned long address)
|
||||
{
|
||||
return (void *)P1SEGADDR(address);
|
||||
}
|
||||
|
|
@ -234,27 +250,60 @@ static __inline__ void * phys_to_virt(unsigned long address)
|
|||
* differently. On the x86 architecture, we just read/write the
|
||||
* memory location directly.
|
||||
*
|
||||
* On SH, we have the whole physical address space mapped at all times
|
||||
* (as MIPS does), so "ioremap()" and "iounmap()" do not need to do
|
||||
* anything. (This isn't true for all machines but we still handle
|
||||
* these cases with wired TLB entries anyway ...)
|
||||
* On SH, we traditionally have the whole physical address space mapped
|
||||
* at all times (as MIPS does), so "ioremap()" and "iounmap()" do not
|
||||
* need to do anything but place the address in the proper segment. This
|
||||
* is true for P1 and P2 addresses, as well as some P3 ones. However,
|
||||
* most of the P3 addresses and newer cores using extended addressing
|
||||
* need to map through page tables, so the ioremap() implementation
|
||||
* becomes a bit more complicated. See arch/sh/mm/ioremap.c for
|
||||
* additional notes on this.
|
||||
*
|
||||
* We cheat a bit and always return uncachable areas until we've fixed
|
||||
* the drivers to handle caching properly.
|
||||
*/
|
||||
static __inline__ void * ioremap(unsigned long offset, unsigned long size)
|
||||
#ifdef CONFIG_MMU
|
||||
void __iomem *__ioremap(unsigned long offset, unsigned long size,
|
||||
unsigned long flags);
|
||||
void __iounmap(void __iomem *addr);
|
||||
#else
|
||||
#define __ioremap(offset, size, flags) ((void __iomem *)(offset))
|
||||
#define __iounmap(addr) do { } while (0)
|
||||
#endif /* CONFIG_MMU */
|
||||
|
||||
static inline void __iomem *
|
||||
__ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags)
|
||||
{
|
||||
return __ioremap(offset, size);
|
||||
unsigned long last_addr = offset + size - 1;
|
||||
|
||||
/*
|
||||
* For P1 and P2 space this is trivial, as everything is already
|
||||
* mapped. Uncached access for P1 addresses are done through P2.
|
||||
* In the P3 case or for addresses outside of the 29-bit space,
|
||||
* mapping must be done by the PMB or by using page tables.
|
||||
*/
|
||||
if (likely(PXSEG(offset) < P3SEG && PXSEG(last_addr) < P3SEG)) {
|
||||
if (unlikely(flags & _PAGE_CACHABLE))
|
||||
return (void __iomem *)P1SEGADDR(offset);
|
||||
|
||||
return (void __iomem *)P2SEGADDR(offset);
|
||||
}
|
||||
|
||||
static __inline__ void iounmap(void *addr)
|
||||
{
|
||||
return __iounmap(addr);
|
||||
return __ioremap(offset, size, flags);
|
||||
}
|
||||
|
||||
#define ioremap_nocache(off,size) ioremap(off,size)
|
||||
#define ioremap(offset, size) \
|
||||
__ioremap_mode((offset), (size), 0)
|
||||
#define ioremap_nocache(offset, size) \
|
||||
__ioremap_mode((offset), (size), 0)
|
||||
#define ioremap_cache(offset, size) \
|
||||
__ioremap_mode((offset), (size), _PAGE_CACHABLE)
|
||||
#define p3_ioremap(offset, size, flags) \
|
||||
__ioremap((offset), (size), (flags))
|
||||
#define iounmap(addr) \
|
||||
__iounmap((addr))
|
||||
|
||||
static __inline__ int check_signature(unsigned long io_addr,
|
||||
static inline int check_signature(char __iomem *io_addr,
|
||||
const unsigned char *signature, int length)
|
||||
{
|
||||
int retval = 0;
|
||||
|
|
|
|||
|
|
@ -1,51 +1,49 @@
|
|||
/*
|
||||
* include/asm-sh/io_generic.h
|
||||
*
|
||||
* Copyright 2000 Stuart Menefy (stuart.menefy@st.com)
|
||||
*
|
||||
* May be copied or modified under the terms of the GNU General Public
|
||||
* License. See linux/COPYING for more information.
|
||||
*
|
||||
* Generic IO functions
|
||||
* Trivial I/O routine definitions, intentionally meant to be included
|
||||
* multiple times. Ugly I/O routine concatenation helpers taken from
|
||||
* alpha. Must be included _before_ io.h to avoid preprocessor-induced
|
||||
* routine mismatch.
|
||||
*/
|
||||
#define IO_CONCAT(a,b) _IO_CONCAT(a,b)
|
||||
#define _IO_CONCAT(a,b) a ## _ ## b
|
||||
|
||||
#ifndef _ASM_SH_IO_GENERIC_H
|
||||
#define _ASM_SH_IO_GENERIC_H
|
||||
#ifndef __IO_PREFIX
|
||||
#error "Don't include this header without a valid system prefix"
|
||||
#endif
|
||||
|
||||
extern unsigned long generic_io_base;
|
||||
u8 IO_CONCAT(__IO_PREFIX,inb)(unsigned long);
|
||||
u16 IO_CONCAT(__IO_PREFIX,inw)(unsigned long);
|
||||
u32 IO_CONCAT(__IO_PREFIX,inl)(unsigned long);
|
||||
|
||||
extern unsigned char generic_inb(unsigned long port);
|
||||
extern unsigned short generic_inw(unsigned long port);
|
||||
extern unsigned int generic_inl(unsigned long port);
|
||||
void IO_CONCAT(__IO_PREFIX,outb)(u8, unsigned long);
|
||||
void IO_CONCAT(__IO_PREFIX,outw)(u16, unsigned long);
|
||||
void IO_CONCAT(__IO_PREFIX,outl)(u32, unsigned long);
|
||||
|
||||
extern void generic_outb(unsigned char value, unsigned long port);
|
||||
extern void generic_outw(unsigned short value, unsigned long port);
|
||||
extern void generic_outl(unsigned int value, unsigned long port);
|
||||
u8 IO_CONCAT(__IO_PREFIX,inb_p)(unsigned long);
|
||||
u16 IO_CONCAT(__IO_PREFIX,inw_p)(unsigned long);
|
||||
u32 IO_CONCAT(__IO_PREFIX,inl_p)(unsigned long);
|
||||
void IO_CONCAT(__IO_PREFIX,outb_p)(u8, unsigned long);
|
||||
void IO_CONCAT(__IO_PREFIX,outw_p)(u16, unsigned long);
|
||||
void IO_CONCAT(__IO_PREFIX,outl_p)(u32, unsigned long);
|
||||
|
||||
extern unsigned char generic_inb_p(unsigned long port);
|
||||
extern unsigned short generic_inw_p(unsigned long port);
|
||||
extern unsigned int generic_inl_p(unsigned long port);
|
||||
extern void generic_outb_p(unsigned char value, unsigned long port);
|
||||
extern void generic_outw_p(unsigned short value, unsigned long port);
|
||||
extern void generic_outl_p(unsigned int value, unsigned long port);
|
||||
void IO_CONCAT(__IO_PREFIX,insb)(unsigned long, void *dst, unsigned long count);
|
||||
void IO_CONCAT(__IO_PREFIX,insw)(unsigned long, void *dst, unsigned long count);
|
||||
void IO_CONCAT(__IO_PREFIX,insl)(unsigned long, void *dst, unsigned long count);
|
||||
void IO_CONCAT(__IO_PREFIX,outsb)(unsigned long, const void *src, unsigned long count);
|
||||
void IO_CONCAT(__IO_PREFIX,outsw)(unsigned long, const void *src, unsigned long count);
|
||||
void IO_CONCAT(__IO_PREFIX,outsl)(unsigned long, const void *src, unsigned long count);
|
||||
|
||||
extern void generic_insb(unsigned long port, void *addr, unsigned long count);
|
||||
extern void generic_insw(unsigned long port, void *addr, unsigned long count);
|
||||
extern void generic_insl(unsigned long port, void *addr, unsigned long count);
|
||||
extern void generic_outsb(unsigned long port, const void *addr, unsigned long count);
|
||||
extern void generic_outsw(unsigned long port, const void *addr, unsigned long count);
|
||||
extern void generic_outsl(unsigned long port, const void *addr, unsigned long count);
|
||||
u8 IO_CONCAT(__IO_PREFIX,readb)(void __iomem *);
|
||||
u16 IO_CONCAT(__IO_PREFIX,readw)(void __iomem *);
|
||||
u32 IO_CONCAT(__IO_PREFIX,readl)(void __iomem *);
|
||||
void IO_CONCAT(__IO_PREFIX,writeb)(u8, void __iomem *);
|
||||
void IO_CONCAT(__IO_PREFIX,writew)(u16, void __iomem *);
|
||||
void IO_CONCAT(__IO_PREFIX,writel)(u32, void __iomem *);
|
||||
|
||||
extern unsigned char generic_readb(unsigned long addr);
|
||||
extern unsigned short generic_readw(unsigned long addr);
|
||||
extern unsigned int generic_readl(unsigned long addr);
|
||||
extern void generic_writeb(unsigned char b, unsigned long addr);
|
||||
extern void generic_writew(unsigned short b, unsigned long addr);
|
||||
extern void generic_writel(unsigned int b, unsigned long addr);
|
||||
void *IO_CONCAT(__IO_PREFIX,ioremap)(unsigned long offset, unsigned long size);
|
||||
void IO_CONCAT(__IO_PREFIX,iounmap)(void *addr);
|
||||
|
||||
extern void *generic_ioremap(unsigned long offset, unsigned long size);
|
||||
extern void generic_iounmap(void *addr);
|
||||
void __iomem *IO_CONCAT(__IO_PREFIX,ioport_map)(unsigned long addr, unsigned int size);
|
||||
void IO_CONCAT(__IO_PREFIX,ioport_unmap)(void __iomem *addr);
|
||||
|
||||
extern unsigned long generic_isa_port2addr(unsigned long offset);
|
||||
|
||||
#endif /* _ASM_SH_IO_GENERIC_H */
|
||||
#undef __IO_PREFIX
|
||||
|
|
|
|||
|
|
@ -18,44 +18,37 @@
|
|||
#include <asm/machvec_init.h>
|
||||
|
||||
struct device;
|
||||
struct timeval;
|
||||
|
||||
struct sh_machine_vector
|
||||
{
|
||||
struct sh_machine_vector {
|
||||
int mv_nr_irqs;
|
||||
|
||||
unsigned char (*mv_inb)(unsigned long);
|
||||
unsigned short (*mv_inw)(unsigned long);
|
||||
unsigned int (*mv_inl)(unsigned long);
|
||||
void (*mv_outb)(unsigned char, unsigned long);
|
||||
void (*mv_outw)(unsigned short, unsigned long);
|
||||
void (*mv_outl)(unsigned int, unsigned long);
|
||||
u8 (*mv_inb)(unsigned long);
|
||||
u16 (*mv_inw)(unsigned long);
|
||||
u32 (*mv_inl)(unsigned long);
|
||||
void (*mv_outb)(u8, unsigned long);
|
||||
void (*mv_outw)(u16, unsigned long);
|
||||
void (*mv_outl)(u32, unsigned long);
|
||||
|
||||
unsigned char (*mv_inb_p)(unsigned long);
|
||||
unsigned short (*mv_inw_p)(unsigned long);
|
||||
unsigned int (*mv_inl_p)(unsigned long);
|
||||
void (*mv_outb_p)(unsigned char, unsigned long);
|
||||
void (*mv_outw_p)(unsigned short, unsigned long);
|
||||
void (*mv_outl_p)(unsigned int, unsigned long);
|
||||
u8 (*mv_inb_p)(unsigned long);
|
||||
u16 (*mv_inw_p)(unsigned long);
|
||||
u32 (*mv_inl_p)(unsigned long);
|
||||
void (*mv_outb_p)(u8, unsigned long);
|
||||
void (*mv_outw_p)(u16, unsigned long);
|
||||
void (*mv_outl_p)(u32, unsigned long);
|
||||
|
||||
void (*mv_insb)(unsigned long port, void *addr, unsigned long count);
|
||||
void (*mv_insw)(unsigned long port, void *addr, unsigned long count);
|
||||
void (*mv_insl)(unsigned long port, void *addr, unsigned long count);
|
||||
void (*mv_outsb)(unsigned long port, const void *addr, unsigned long count);
|
||||
void (*mv_outsw)(unsigned long port, const void *addr, unsigned long count);
|
||||
void (*mv_outsl)(unsigned long port, const void *addr, unsigned long count);
|
||||
void (*mv_insb)(unsigned long, void *dst, unsigned long count);
|
||||
void (*mv_insw)(unsigned long, void *dst, unsigned long count);
|
||||
void (*mv_insl)(unsigned long, void *dst, unsigned long count);
|
||||
void (*mv_outsb)(unsigned long, const void *src, unsigned long count);
|
||||
void (*mv_outsw)(unsigned long, const void *src, unsigned long count);
|
||||
void (*mv_outsl)(unsigned long, const void *src, unsigned long count);
|
||||
|
||||
unsigned char (*mv_readb)(unsigned long);
|
||||
unsigned short (*mv_readw)(unsigned long);
|
||||
unsigned int (*mv_readl)(unsigned long);
|
||||
void (*mv_writeb)(unsigned char, unsigned long);
|
||||
void (*mv_writew)(unsigned short, unsigned long);
|
||||
void (*mv_writel)(unsigned int, unsigned long);
|
||||
|
||||
void* (*mv_ioremap)(unsigned long offset, unsigned long size);
|
||||
void (*mv_iounmap)(void *addr);
|
||||
|
||||
unsigned long (*mv_isa_port2addr)(unsigned long offset);
|
||||
u8 (*mv_readb)(void __iomem *);
|
||||
u16 (*mv_readw)(void __iomem *);
|
||||
u32 (*mv_readl)(void __iomem *);
|
||||
void (*mv_writeb)(u8, void __iomem *);
|
||||
void (*mv_writew)(u16, void __iomem *);
|
||||
void (*mv_writel)(u32, void __iomem *);
|
||||
|
||||
int (*mv_irq_demux)(int irq);
|
||||
|
||||
|
|
@ -66,6 +59,9 @@ struct sh_machine_vector
|
|||
|
||||
void *(*mv_consistent_alloc)(struct device *, size_t, dma_addr_t *, gfp_t);
|
||||
int (*mv_consistent_free)(struct device *, size_t, void *, dma_addr_t);
|
||||
|
||||
void __iomem *(*mv_ioport_map)(unsigned long port, unsigned int size);
|
||||
void (*mv_ioport_unmap)(void __iomem *);
|
||||
};
|
||||
|
||||
extern struct sh_machine_vector sh_mv;
|
||||
|
|
|
|||
Loading…
Reference in New Issue