1/* 2 * Copyright (C) 2002 David McCullough <davidm@snapgear.com> 3 * Copyright (C) 2001 Ian da Silva, Jeremy Siegel 4 * Based largely on io_se.c. 5 * 6 * I/O routine for Hitachi 7751 SolutionEngine. 7 * 8 * Initial version only to support LAN access; some 9 * placeholder code from io_se.c left in with the 10 * expectation of later SuperIO and PCMCIA access. 11 */ 12#include <linux/kernel.h> 13#include <linux/types.h> 14#include <linux/pci.h> 15#include <asm/io.h> 16#include <asm/addrspace.h> 17 18#ifdef CONFIG_SH_SECUREEDGE5410 19unsigned short secureedge5410_ioport; 20#endif 21 22static inline volatile __u16 *port2adr(unsigned int port) 23{ 24 maybebadio((unsigned long)port); 25 return (volatile __u16*)port; 26} 27 28/* 29 * General outline: remap really low stuff [eventually] to SuperIO, 30 * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO) 31 * is mapped through the PCI IO window. Stuff with high bits (PXSEG) 32 * should be way beyond the window, and is used w/o translation for 33 * compatibility. 34 */ 35unsigned char snapgear_inb(unsigned long port) 36{ 37 if (PXSEG(port)) 38 return *(volatile unsigned char *)port; 39 else 40 return (*port2adr(port)) & 0xff; 41} 42 43unsigned char snapgear_inb_p(unsigned long port) 44{ 45 unsigned char v; 46 47 if (PXSEG(port)) 48 v = *(volatile unsigned char *)port; 49 else 50 v = (*port2adr(port))&0xff; 51 ctrl_delay(); 52 return v; 53} 54 55unsigned short snapgear_inw(unsigned long port) 56{ 57 if (PXSEG(port)) 58 return *(volatile unsigned short *)port; 59 else if (port >= 0x2000) 60 return *port2adr(port); 61 else 62 maybebadio(port); 63 return 0; 64} 65 66unsigned int snapgear_inl(unsigned long port) 67{ 68 if (PXSEG(port)) 69 return *(volatile unsigned long *)port; 70 else if (port >= 0x2000) 71 return *port2adr(port); 72 else 73 maybebadio(port); 74 return 0; 75} 76 77void snapgear_outb(unsigned char value, unsigned long port) 78{ 79 80 if (PXSEG(port)) 81 *(volatile unsigned char *)port = value; 82 else 83 *(port2adr(port)) = value; 84} 85 86void snapgear_outb_p(unsigned char value, unsigned long port) 87{ 88 if (PXSEG(port)) 89 *(volatile unsigned char *)port = value; 90 else 91 *(port2adr(port)) = value; 92 ctrl_delay(); 93} 94 95void snapgear_outw(unsigned short value, unsigned long port) 96{ 97 if (PXSEG(port)) 98 *(volatile unsigned short *)port = value; 99 else if (port >= 0x2000) 100 *port2adr(port) = value; 101 else 102 maybebadio(port); 103} 104 105void snapgear_outl(unsigned int value, unsigned long port) 106{ 107 if (PXSEG(port)) 108 *(volatile unsigned long *)port = value; 109 else 110 maybebadio(port); 111} 112 113void snapgear_insl(unsigned long port, void *addr, unsigned long count) 114{ 115 maybebadio(port); 116} 117 118void snapgear_outsl(unsigned long port, const void *addr, unsigned long count) 119{ 120 maybebadio(port); 121} 122