1/* 2 * Copyright (C) 2001 Ian da Silva, Jeremy Siegel 3 * Based largely on io_se.c. 4 * 5 * I/O routine for Hitachi 7751 SolutionEngine. 6 * 7 * Initial version only to support LAN access; some 8 * placeholder code from io_se.c left in with the 9 * expectation of later SuperIO and PCMCIA access. 10 */ 11#include <linux/kernel.h> 12#include <linux/types.h> 13#include <linux/pci.h> 14#include <asm/io.h> 15#include <asm/se7751.h> 16#include <asm/addrspace.h> 17 18static inline volatile u16 *port2adr(unsigned int port) 19{ 20 if (port >= 0x2000) 21 return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000)); 22 maybebadio((unsigned long)port); 23 return (volatile __u16*)port; 24} 25 26/* 27 * General outline: remap really low stuff [eventually] to SuperIO, 28 * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO) 29 * is mapped through the PCI IO window. Stuff with high bits (PXSEG) 30 * should be way beyond the window, and is used w/o translation for 31 * compatibility. 32 */ 33unsigned char sh7751se_inb(unsigned long port) 34{ 35 if (PXSEG(port)) 36 return *(volatile unsigned char *)port; 37 else if (is_pci_ioaddr(port)) 38 return *(volatile unsigned char *)pci_ioaddr(port); 39 else 40 return (*port2adr(port)) & 0xff; 41} 42 43unsigned char sh7751se_inb_p(unsigned long port) 44{ 45 unsigned char v; 46 47 if (PXSEG(port)) 48 v = *(volatile unsigned char *)port; 49 else if (is_pci_ioaddr(port)) 50 v = *(volatile unsigned char *)pci_ioaddr(port); 51 else 52 v = (*port2adr(port)) & 0xff; 53 ctrl_delay(); 54 return v; 55} 56 57unsigned short sh7751se_inw(unsigned long port) 58{ 59 if (PXSEG(port)) 60 return *(volatile unsigned short *)port; 61 else if (is_pci_ioaddr(port)) 62 return *(volatile unsigned short *)pci_ioaddr(port); 63 else if (port >= 0x2000) 64 return *port2adr(port); 65 else 66 maybebadio(port); 67 return 0; 68} 69 70unsigned int sh7751se_inl(unsigned long port) 71{ 72 if (PXSEG(port)) 73 return *(volatile unsigned long *)port; 74 else if (is_pci_ioaddr(port)) 75 return *(volatile unsigned int *)pci_ioaddr(port); 76 else if (port >= 0x2000) 77 return *port2adr(port); 78 else 79 maybebadio(port); 80 return 0; 81} 82 83void sh7751se_outb(unsigned char value, unsigned long port) 84{ 85 86 if (PXSEG(port)) 87 *(volatile unsigned char *)port = value; 88 else if (is_pci_ioaddr(port)) 89 *((unsigned char*)pci_ioaddr(port)) = value; 90 else 91 *(port2adr(port)) = value; 92} 93 94void sh7751se_outb_p(unsigned char value, unsigned long port) 95{ 96 if (PXSEG(port)) 97 *(volatile unsigned char *)port = value; 98 else if (is_pci_ioaddr(port)) 99 *((unsigned char*)pci_ioaddr(port)) = value; 100 else 101 *(port2adr(port)) = value; 102 ctrl_delay(); 103} 104 105void sh7751se_outw(unsigned short value, unsigned long port) 106{ 107 if (PXSEG(port)) 108 *(volatile unsigned short *)port = value; 109 else if (is_pci_ioaddr(port)) 110 *((unsigned short *)pci_ioaddr(port)) = value; 111 else if (port >= 0x2000) 112 *port2adr(port) = value; 113 else 114 maybebadio(port); 115} 116 117void sh7751se_outl(unsigned int value, unsigned long port) 118{ 119 if (PXSEG(port)) 120 *(volatile unsigned long *)port = value; 121 else if (is_pci_ioaddr(port)) 122 *((unsigned long*)pci_ioaddr(port)) = value; 123 else 124 maybebadio(port); 125} 126 127void sh7751se_insl(unsigned long port, void *addr, unsigned long count) 128{ 129 maybebadio(port); 130} 131 132void sh7751se_outsl(unsigned long port, const void *addr, unsigned long count) 133{ 134 maybebadio(port); 135} 136