arch/sh/cchips/hd6446x/hd64461/io.c

   1 /*
   2  *      $Id: io.c,v 1.6 2004/03/16 00:07:50 lethal Exp $
   3  *      Copyright (C) 2000 YAEGASHI Takeshi
   4  *      Typical I/O routines for HD64461 system.
   5  */
   6
   7 #include <linux/config.h>
   8 #include <asm/io.h>
   9 #include <asm/hd64461/hd64461.h>
  10
  11 #define MEM_BASE (CONFIG_HD64461_IOBASE - HD64461_STBCR)
  12
  13 static __inline__ unsigned long PORT2ADDR(unsigned long port)
  14 {
  15         /* 16550A: HD64461 internal */
  16         if (0x3f8<=port && port<=0x3ff)
  17                 return CONFIG_HD64461_IOBASE + 0x8000 + ((port-0x3f8)<<1);
  18         if (0x2f8<=port && port<=0x2ff)
  19                 return CONFIG_HD64461_IOBASE + 0x7000 + ((port-0x2f8)<<1);
  20
  21 #ifdef CONFIG_HD64461_ENABLER
  22         /* NE2000: HD64461 PCMCIA channel 0 (I/O) */
  23         if (0x300<=port && port<=0x31f)
  24                 return 0xba000000 + port;
  25
  26         /* ide0: HD64461 PCMCIA channel 1 (memory) */
  27         /* On HP690, CF in slot 1 is configured as a memory card
  28            device.  See CF+ and CompactFlash Specification for the
  29            detail of CF's memory mapped addressing. */
  30         if (0x1f0<=port && port<=0x1f7) return 0xb5000000 + port;
  31         if (port == 0x3f6) return 0xb50001fe;
  32         if (port == 0x3f7) return 0xb50001ff;
  33
  34         /* ide1 */
  35         if (0x170<=port && port<=0x177) return 0xba000000 + port;
  36         if (port == 0x376) return 0xba000376;
  37         if (port == 0x377) return 0xba000377;
  38 #endif
  39
  40         /* ??? */
  41         if (port < 0xf000) return 0xa0000000 + port;
  42         /* PCMCIA channel 0, I/O (0xba000000) */
  43         if (port < 0x10000) return 0xba000000 + port - 0xf000;
  44
  45         /* HD64461 internal devices (0xb0000000) */
  46         if (port < 0x20000) return CONFIG_HD64461_IOBASE + port - 0x10000;
  47
  48         /* PCMCIA channel 0, I/O (0xba000000) */
  49         if (port < 0x30000) return 0xba000000 + port - 0x20000;
  50
  51         /* PCMCIA channel 1, memory (0xb5000000) */
  52         if (port < 0x40000) return 0xb5000000 + port - 0x30000;
  53
  54         /* Whole physical address space (0xa0000000) */
  55         return 0xa0000000 + (port & 0x1fffffff);
  56 }
  57
  58 static inline void delay(void)
  59 {
  60         ctrl_inw(0xa0000000);
  61 }
  62
  63 unsigned char hd64461_inb(unsigned long port)
  64 {
  65         return *(volatile unsigned char*)PORT2ADDR(port);
  66 }
  67
  68 unsigned char hd64461_inb_p(unsigned long port)
  69 {
  70         unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);
  71         delay();
  72         return v;
  73 }
  74
  75 unsigned short hd64461_inw(unsigned long port)
  76 {
  77         return *(volatile unsigned short*)PORT2ADDR(port);
  78 }
  79
  80 unsigned int hd64461_inl(unsigned long port)
  81 {
  82         return *(volatile unsigned long*)PORT2ADDR(port);
  83 }
  84
  85 void hd64461_outb(unsigned char b, unsigned long port)
  86 {
  87         *(volatile unsigned char*)PORT2ADDR(port) = b;
  88 }
  89
  90 void hd64461_outb_p(unsigned char b, unsigned long port)
  91 {
  92         *(volatile unsigned char*)PORT2ADDR(port) = b;
  93         delay();
  94 }
  95
  96 void hd64461_outw(unsigned short b, unsigned long port)
  97 {
  98         *(volatile unsigned short*)PORT2ADDR(port) = b;
  99 }
 100
 101 void hd64461_outl(unsigned int b, unsigned long port)
 102 {
 103         *(volatile unsigned long*)PORT2ADDR(port) = b;
 104 }
 105
 106 void hd64461_insb(unsigned long port, void *buffer, unsigned long count)
 107 {
 108         volatile unsigned char* addr=(volatile unsigned char*)PORT2ADDR(port);
 109         unsigned char *buf=buffer;
 110         while(count--) *buf++=*addr;
 111 }
 112
 113 void hd64461_insw(unsigned long port, void *buffer, unsigned long count)
 114 {
 115         volatile unsigned short* addr=(volatile unsigned short*)PORT2ADDR(port);
 116         unsigned short *buf=buffer;
 117         while(count--) *buf++=*addr;
 118 }
 119
 120 void hd64461_insl(unsigned long port, void *buffer, unsigned long count)
 121 {
 122         volatile unsigned long* addr=(volatile unsigned long*)PORT2ADDR(port);
 123         unsigned long *buf=buffer;
 124         while(count--) *buf++=*addr;
 125 }
 126
 127 void hd64461_outsb(unsigned long port, const void *buffer, unsigned long count)
 128 {
 129         volatile unsigned char* addr=(volatile unsigned char*)PORT2ADDR(port);
 130         const unsigned char *buf=buffer;
 131         while(count--) *addr=*buf++;
 132 }
 133
 134 void hd64461_outsw(unsigned long port, const void *buffer, unsigned long count)
 135 {
 136         volatile unsigned short* addr=(volatile unsigned short*)PORT2ADDR(port);
 137         const unsigned short *buf=buffer;
 138         while(count--) *addr=*buf++;
 139 }
 140
 141 void hd64461_outsl(unsigned long port, const void *buffer, unsigned long count)
 142 {
 143         volatile unsigned long* addr=(volatile unsigned long*)PORT2ADDR(port);
 144         const unsigned long *buf=buffer;
 145         while(count--) *addr=*buf++;
 146 }
 147
 148 unsigned short hd64461_readw(unsigned long addr)
 149 {
 150         return *(volatile unsigned short*)(MEM_BASE+addr);
 151 }
 152
 153 void hd64461_writew(unsigned short b, unsigned long addr)
 154 {
 155         *(volatile unsigned short*)(MEM_BASE+addr) = b;
 156 }
 157