io_hd64461.c
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上传日期:2013-04-10
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- /*
- * $Id: io_hd64461.c,v 1.6 2000/11/16 23:28:44 yaegashi Exp $
- * Copyright (C) 2000 YAEGASHI Takeshi
- * Typical I/O routines for HD64461 system.
- */
- #include <linux/config.h>
- #include <asm/io.h>
- #include <asm/hd64461.h>
- static __inline__ unsigned long PORT2ADDR(unsigned long port)
- {
- /* 16550A: HD64461 internal */
- if (0x3f8<=port && port<=0x3ff)
- return CONFIG_HD64461_IOBASE + 0x8000 + ((port-0x3f8)<<1);
- if (0x2f8<=port && port<=0x2ff)
- return CONFIG_HD64461_IOBASE + 0x7000 + ((port-0x2f8)<<1);
- #ifdef CONFIG_HD64461_ENABLER
- /* NE2000: HD64461 PCMCIA channel 0 (I/O) */
- if (0x300<=port && port<=0x31f)
- return 0xba000000 + port;
- /* ide0: HD64461 PCMCIA channel 1 (memory) */
- /* On HP690, CF in slot 1 is configured as a memory card
- device. See CF+ and CompactFlash Specification for the
- detail of CF's memory mapped addressing. */
- if (0x1f0<=port && port<=0x1f7) return 0xb5000000 + port;
- if (port == 0x3f6) return 0xb50001fe;
- if (port == 0x3f7) return 0xb50001ff;
- /* ide1 */
- if (0x170<=port && port<=0x177) return 0xba000000 + port;
- if (port == 0x376) return 0xba000376;
- if (port == 0x377) return 0xba000377;
- #endif
- /* ??? */
- if (port < 0x10000) return 0xa0000000 + port;
- /* HD64461 internal devices (0xb0000000) */
- if (port < 0x20000) return CONFIG_HD64461_IOBASE + port - 0x10000;
- /* PCMCIA channel 0, I/O (0xba000000) */
- if (port < 0x30000) return 0xba000000 + port - 0x20000;
- /* PCMCIA channel 1, memory (0xb5000000) */
- if (port < 0x40000) return 0xb5000000 + port - 0x30000;
- /* Whole physical address space (0xa0000000) */
- return 0xa0000000 + (port & 0x1fffffff);
- }
- static inline void delay(void)
- {
- ctrl_inw(0xa0000000);
- }
- unsigned char hd64461_inb(unsigned long port)
- {
- return *(volatile unsigned char*)PORT2ADDR(port);
- }
- unsigned char hd64461_inb_p(unsigned long port)
- {
- unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);
- delay();
- return v;
- }
- unsigned short hd64461_inw(unsigned long port)
- {
- return *(volatile unsigned short*)PORT2ADDR(port);
- }
- unsigned int hd64461_inl(unsigned long port)
- {
- return *(volatile unsigned long*)PORT2ADDR(port);
- }
- void hd64461_insb(unsigned long port, void *buffer, unsigned long count)
- {
- unsigned char *buf=buffer;
- while(count--) *buf++=inb(port);
- }
- void hd64461_insw(unsigned long port, void *buffer, unsigned long count)
- {
- unsigned short *buf=buffer;
- while(count--) *buf++=inw(port);
- }
- void hd64461_insl(unsigned long port, void *buffer, unsigned long count)
- {
- unsigned long *buf=buffer;
- while(count--) *buf++=inl(port);
- }
- void hd64461_outb(unsigned char b, unsigned long port)
- {
- *(volatile unsigned char*)PORT2ADDR(port) = b;
- }
- void hd64461_outb_p(unsigned char b, unsigned long port)
- {
- *(volatile unsigned char*)PORT2ADDR(port) = b;
- delay();
- }
- void hd64461_outw(unsigned short b, unsigned long port)
- {
- *(volatile unsigned short*)PORT2ADDR(port) = b;
- }
- void hd64461_outl(unsigned int b, unsigned long port)
- {
- *(volatile unsigned long*)PORT2ADDR(port) = b;
- }
- void hd64461_outsb(unsigned long port, const void *buffer, unsigned long count)
- {
- const unsigned char *buf=buffer;
- while(count--) outb(*buf++, port);
- }
- void hd64461_outsw(unsigned long port, const void *buffer, unsigned long count)
- {
- const unsigned short *buf=buffer;
- while(count--) outw(*buf++, port);
- }
- void hd64461_outsl(unsigned long port, const void *buffer, unsigned long count)
- {
- const unsigned long *buf=buffer;
- while(count--) outl(*buf++, port);
- }