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.
8 #include <asm/hd64461/hd64461.h>
10 #define MEM_BASE (CONFIG_HD64461_IOBASE - HD64461_STBCR)
12 static __inline__ unsigned long PORT2ADDR(unsigned long port)
14 /* 16550A: HD64461 internal */
15 if (0x3f8<=port && port<=0x3ff)
16 return CONFIG_HD64461_IOBASE + 0x8000 + ((port-0x3f8)<<1);
17 if (0x2f8<=port && port<=0x2ff)
18 return CONFIG_HD64461_IOBASE + 0x7000 + ((port-0x2f8)<<1);
20 #ifdef CONFIG_HD64461_ENABLER
21 /* NE2000: HD64461 PCMCIA channel 0 (I/O) */
22 if (0x300<=port && port<=0x31f)
23 return 0xba000000 + port;
25 /* ide0: HD64461 PCMCIA channel 1 (memory) */
26 /* On HP690, CF in slot 1 is configured as a memory card
27 device. See CF+ and CompactFlash Specification for the
28 detail of CF's memory mapped addressing. */
29 if (0x1f0<=port && port<=0x1f7) return 0xb5000000 + port;
30 if (port == 0x3f6) return 0xb50001fe;
31 if (port == 0x3f7) return 0xb50001ff;
34 if (0x170<=port && port<=0x177) return 0xba000000 + port;
35 if (port == 0x376) return 0xba000376;
36 if (port == 0x377) return 0xba000377;
40 if (port < 0xf000) return 0xa0000000 + port;
41 /* PCMCIA channel 0, I/O (0xba000000) */
42 if (port < 0x10000) return 0xba000000 + port - 0xf000;
44 /* HD64461 internal devices (0xb0000000) */
45 if (port < 0x20000) return CONFIG_HD64461_IOBASE + port - 0x10000;
47 /* PCMCIA channel 0, I/O (0xba000000) */
48 if (port < 0x30000) return 0xba000000 + port - 0x20000;
50 /* PCMCIA channel 1, memory (0xb5000000) */
51 if (port < 0x40000) return 0xb5000000 + port - 0x30000;
53 /* Whole physical address space (0xa0000000) */
54 return 0xa0000000 + (port & 0x1fffffff);
57 static inline void delay(void)
62 unsigned char hd64461_inb(unsigned long port)
64 return *(volatile unsigned char*)PORT2ADDR(port);
67 unsigned char hd64461_inb_p(unsigned long port)
69 unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);
74 unsigned short hd64461_inw(unsigned long port)
76 return *(volatile unsigned short*)PORT2ADDR(port);
79 unsigned int hd64461_inl(unsigned long port)
81 return *(volatile unsigned long*)PORT2ADDR(port);
84 void hd64461_outb(unsigned char b, unsigned long port)
86 *(volatile unsigned char*)PORT2ADDR(port) = b;
89 void hd64461_outb_p(unsigned char b, unsigned long port)
91 *(volatile unsigned char*)PORT2ADDR(port) = b;
95 void hd64461_outw(unsigned short b, unsigned long port)
97 *(volatile unsigned short*)PORT2ADDR(port) = b;
100 void hd64461_outl(unsigned int b, unsigned long port)
102 *(volatile unsigned long*)PORT2ADDR(port) = b;
105 void hd64461_insb(unsigned long port, void *buffer, unsigned long count)
107 volatile unsigned char* addr=(volatile unsigned char*)PORT2ADDR(port);
108 unsigned char *buf=buffer;
109 while(count--) *buf++=*addr;
112 void hd64461_insw(unsigned long port, void *buffer, unsigned long count)
114 volatile unsigned short* addr=(volatile unsigned short*)PORT2ADDR(port);
115 unsigned short *buf=buffer;
116 while(count--) *buf++=*addr;
119 void hd64461_insl(unsigned long port, void *buffer, unsigned long count)
121 volatile unsigned long* addr=(volatile unsigned long*)PORT2ADDR(port);
122 unsigned long *buf=buffer;
123 while(count--) *buf++=*addr;
126 void hd64461_outsb(unsigned long port, const void *buffer, unsigned long count)
128 volatile unsigned char* addr=(volatile unsigned char*)PORT2ADDR(port);
129 const unsigned char *buf=buffer;
130 while(count--) *addr=*buf++;
133 void hd64461_outsw(unsigned long port, const void *buffer, unsigned long count)
135 volatile unsigned short* addr=(volatile unsigned short*)PORT2ADDR(port);
136 const unsigned short *buf=buffer;
137 while(count--) *addr=*buf++;
140 void hd64461_outsl(unsigned long port, const void *buffer, unsigned long count)
142 volatile unsigned long* addr=(volatile unsigned long*)PORT2ADDR(port);
143 const unsigned long *buf=buffer;
144 while(count--) *addr=*buf++;
147 unsigned short hd64461_readw(unsigned long addr)
149 return *(volatile unsigned short*)(MEM_BASE+addr);
152 void hd64461_writew(unsigned short b, unsigned long addr)
154 *(volatile unsigned short*)(MEM_BASE+addr) = b;