2 * linux/arch/sh/boards/renesas/systemh/io.c
4 * Copyright (C) 2001 Ian da Silva, Jeremy Siegel
5 * Based largely on io_se.c.
7 * I/O routine for Hitachi 7751 Systemh.
9 #include <linux/kernel.h>
10 #include <linux/types.h>
11 #include <linux/pci.h>
12 #include <asm/systemh7751.h>
13 #include <asm/addrspace.h>
16 #define ETHER_IOMAP(adr) (0xB3000000 + (adr)) /*map to 16bits access area
18 static inline volatile __u16 *
19 port2adr(unsigned int port)
22 return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
23 maybebadio((unsigned long)port);
24 return (volatile __u16*)port;
28 * General outline: remap really low stuff [eventually] to SuperIO,
29 * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO)
30 * is mapped through the PCI IO window. Stuff with high bits (PXSEG)
31 * should be way beyond the window, and is used w/o translation for
34 unsigned char sh7751systemh_inb(unsigned long port)
37 return *(volatile unsigned char *)port;
38 else if (is_pci_ioaddr(port))
39 return *(volatile unsigned char *)pci_ioaddr(port);
40 else if (port <= 0x3F1)
41 return *(volatile unsigned char *)ETHER_IOMAP(port);
43 return (*port2adr(port))&0xff;
46 unsigned char sh7751systemh_inb_p(unsigned long port)
51 v = *(volatile unsigned char *)port;
52 else if (is_pci_ioaddr(port))
53 v = *(volatile unsigned char *)pci_ioaddr(port);
54 else if (port <= 0x3F1)
55 v = *(volatile unsigned char *)ETHER_IOMAP(port);
57 v = (*port2adr(port))&0xff;
62 unsigned short sh7751systemh_inw(unsigned long port)
65 return *(volatile unsigned short *)port;
66 else if (is_pci_ioaddr(port))
67 return *(volatile unsigned short *)pci_ioaddr(port);
68 else if (port >= 0x2000)
69 return *port2adr(port);
70 else if (port <= 0x3F1)
71 return *(volatile unsigned int *)ETHER_IOMAP(port);
77 unsigned int sh7751systemh_inl(unsigned long port)
80 return *(volatile unsigned long *)port;
81 else if (is_pci_ioaddr(port))
82 return *(volatile unsigned int *)pci_ioaddr(port);
83 else if (port >= 0x2000)
84 return *port2adr(port);
85 else if (port <= 0x3F1)
86 return *(volatile unsigned int *)ETHER_IOMAP(port);
92 void sh7751systemh_outb(unsigned char value, unsigned long port)
96 *(volatile unsigned char *)port = value;
97 else if (is_pci_ioaddr(port))
98 *((unsigned char*)pci_ioaddr(port)) = value;
99 else if (port <= 0x3F1)
100 *(volatile unsigned char *)ETHER_IOMAP(port) = value;
102 *(port2adr(port)) = value;
105 void sh7751systemh_outb_p(unsigned char value, unsigned long port)
108 *(volatile unsigned char *)port = value;
109 else if (is_pci_ioaddr(port))
110 *((unsigned char*)pci_ioaddr(port)) = value;
111 else if (port <= 0x3F1)
112 *(volatile unsigned char *)ETHER_IOMAP(port) = value;
114 *(port2adr(port)) = value;
118 void sh7751systemh_outw(unsigned short value, unsigned long port)
121 *(volatile unsigned short *)port = value;
122 else if (is_pci_ioaddr(port))
123 *((unsigned short *)pci_ioaddr(port)) = value;
124 else if (port >= 0x2000)
125 *port2adr(port) = value;
126 else if (port <= 0x3F1)
127 *(volatile unsigned short *)ETHER_IOMAP(port) = value;
132 void sh7751systemh_outl(unsigned int value, unsigned long port)
135 *(volatile unsigned long *)port = value;
136 else if (is_pci_ioaddr(port))
137 *((unsigned long*)pci_ioaddr(port)) = value;
142 void sh7751systemh_insb(unsigned long port, void *addr, unsigned long count)
144 unsigned char *p = addr;
145 while (count--) *p++ = sh7751systemh_inb(port);
148 void sh7751systemh_insw(unsigned long port, void *addr, unsigned long count)
150 unsigned short *p = addr;
151 while (count--) *p++ = sh7751systemh_inw(port);
154 void sh7751systemh_insl(unsigned long port, void *addr, unsigned long count)
159 void sh7751systemh_outsb(unsigned long port, const void *addr, unsigned long count)
161 unsigned char *p = (unsigned char*)addr;
162 while (count--) sh7751systemh_outb(*p++, port);
165 void sh7751systemh_outsw(unsigned long port, const void *addr, unsigned long count)
167 unsigned short *p = (unsigned short*)addr;
168 while (count--) sh7751systemh_outw(*p++, port);
171 void sh7751systemh_outsl(unsigned long port, const void *addr, unsigned long count)