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 <mach-se/mach/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 38 return (*port2adr(port)) & 0xff; 39} 40 41unsigned char sh7751se_inb_p(unsigned long port) 42{ 43 unsigned char v; 44 45 if (PXSEG(port)) 46 v = *(volatile unsigned char *)port; 47 else 48 v = (*port2adr(port)) & 0xff; 49 ctrl_delay(); 50 return v; 51} 52 53unsigned short sh7751se_inw(unsigned long port) 54{ 55 if (PXSEG(port)) 56 return *(volatile unsigned short *)port; 57 else if (port >= 0x2000) 58 return *port2adr(port); 59 else 60 maybebadio(port); 61 return 0; 62} 63 64unsigned int sh7751se_inl(unsigned long port) 65{ 66 if (PXSEG(port)) 67 return *(volatile unsigned long *)port; 68 else if (port >= 0x2000) 69 return *port2adr(port); 70 else 71 maybebadio(port); 72 return 0; 73} 74 75void sh7751se_outb(unsigned char value, unsigned long port) 76{ 77 78 if (PXSEG(port)) 79 *(volatile unsigned char *)port = value; 80 else 81 *(port2adr(port)) = value; 82} 83 84void sh7751se_outb_p(unsigned char value, unsigned long port) 85{ 86 if (PXSEG(port)) 87 *(volatile unsigned char *)port = value; 88 else 89 *(port2adr(port)) = value; 90 ctrl_delay(); 91} 92 93void sh7751se_outw(unsigned short value, unsigned long port) 94{ 95 if (PXSEG(port)) 96 *(volatile unsigned short *)port = value; 97 else if (port >= 0x2000) 98 *port2adr(port) = value; 99 else 100 maybebadio(port); 101} 102 103void sh7751se_outl(unsigned int value, unsigned long port) 104{ 105 if (PXSEG(port)) 106 *(volatile unsigned long *)port = value; 107 else 108 maybebadio(port); 109} 110 111void sh7751se_insl(unsigned long port, void *addr, unsigned long count) 112{ 113 maybebadio(port); 114} 115 116void sh7751se_outsl(unsigned long port, const void *addr, unsigned long count) 117{ 118 maybebadio(port); 119} 120