1 /* 2 * linux/arch/sh/boards/superh/microdev/io.c 3 * 4 * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com) 5 * Copyright (C) 2003, 2004 SuperH, Inc. 6 * Copyright (C) 2004 Paul Mundt 7 * 8 * SuperH SH4-202 MicroDev board support. 9 * 10 * May be copied or modified under the terms of the GNU General Public 11 * License. See linux/COPYING for more information. 12 */ 13 14 #include <linux/init.h> 15 #include <linux/pci.h> 16 #include <linux/wait.h> 17 #include <asm/io.h> 18 #include <mach/microdev.h> 19 20 /* 21 * we need to have a 'safe' address to re-direct all I/O requests 22 * that we do not explicitly wish to handle. This safe address 23 * must have the following properies: 24 * 25 * * writes are ignored (no exception) 26 * * reads are benign (no side-effects) 27 * * accesses of width 1, 2 and 4-bytes are all valid. 28 * 29 * The Processor Version Register (PVR) has these properties. 30 */ 31 #define PVR 0xff000030 /* Processor Version Register */ 32 33 34 #define IO_IDE2_BASE 0x170ul /* I/O base for SMSC FDC37C93xAPM IDE #2 */ 35 #define IO_IDE1_BASE 0x1f0ul /* I/O base for SMSC FDC37C93xAPM IDE #1 */ 36 #define IO_ISP1161_BASE 0x290ul /* I/O port for Philips ISP1161x USB chip */ 37 #define IO_SERIAL2_BASE 0x2f8ul /* I/O base for SMSC FDC37C93xAPM Serial #2 */ 38 #define IO_LAN91C111_BASE 0x300ul /* I/O base for SMSC LAN91C111 Ethernet chip */ 39 #define IO_IDE2_MISC 0x376ul /* I/O misc for SMSC FDC37C93xAPM IDE #2 */ 40 #define IO_SUPERIO_BASE 0x3f0ul /* I/O base for SMSC FDC37C93xAPM SuperIO chip */ 41 #define IO_IDE1_MISC 0x3f6ul /* I/O misc for SMSC FDC37C93xAPM IDE #1 */ 42 #define IO_SERIAL1_BASE 0x3f8ul /* I/O base for SMSC FDC37C93xAPM Serial #1 */ 43 44 #define IO_ISP1161_EXTENT 0x04ul /* I/O extent for Philips ISP1161x USB chip */ 45 #define IO_LAN91C111_EXTENT 0x10ul /* I/O extent for SMSC LAN91C111 Ethernet chip */ 46 #define IO_SUPERIO_EXTENT 0x02ul /* I/O extent for SMSC FDC37C93xAPM SuperIO chip */ 47 #define IO_IDE_EXTENT 0x08ul /* I/O extent for IDE Task Register set */ 48 #define IO_SERIAL_EXTENT 0x10ul 49 50 #define IO_LAN91C111_PHYS 0xa7500000ul /* Physical address of SMSC LAN91C111 Ethernet chip */ 51 #define IO_ISP1161_PHYS 0xa7700000ul /* Physical address of Philips ISP1161x USB chip */ 52 #define IO_SUPERIO_PHYS 0xa7800000ul /* Physical address of SMSC FDC37C93xAPM SuperIO chip */ 53 54 /* 55 * map I/O ports to memory-mapped addresses 56 */ 57 void __iomem *microdev_ioport_map(unsigned long offset, unsigned int len) 58 { 59 unsigned long result; 60 61 if ((offset >= IO_LAN91C111_BASE) && 62 (offset < IO_LAN91C111_BASE + IO_LAN91C111_EXTENT)) { 63 /* 64 * SMSC LAN91C111 Ethernet chip 65 */ 66 result = IO_LAN91C111_PHYS + offset - IO_LAN91C111_BASE; 67 } else if ((offset >= IO_SUPERIO_BASE) && 68 (offset < IO_SUPERIO_BASE + IO_SUPERIO_EXTENT)) { 69 /* 70 * SMSC FDC37C93xAPM SuperIO chip 71 * 72 * Configuration Registers 73 */ 74 result = IO_SUPERIO_PHYS + (offset << 1); 75 } else if (((offset >= IO_IDE1_BASE) && 76 (offset < IO_IDE1_BASE + IO_IDE_EXTENT)) || 77 (offset == IO_IDE1_MISC)) { 78 /* 79 * SMSC FDC37C93xAPM SuperIO chip 80 * 81 * IDE #1 82 */ 83 result = IO_SUPERIO_PHYS + (offset << 1); 84 } else if (((offset >= IO_IDE2_BASE) && 85 (offset < IO_IDE2_BASE + IO_IDE_EXTENT)) || 86 (offset == IO_IDE2_MISC)) { 87 /* 88 * SMSC FDC37C93xAPM SuperIO chip 89 * 90 * IDE #2 91 */ 92 result = IO_SUPERIO_PHYS + (offset << 1); 93 } else if ((offset >= IO_SERIAL1_BASE) && 94 (offset < IO_SERIAL1_BASE + IO_SERIAL_EXTENT)) { 95 /* 96 * SMSC FDC37C93xAPM SuperIO chip 97 * 98 * Serial #1 99 */ 100 result = IO_SUPERIO_PHYS + (offset << 1); 101 } else if ((offset >= IO_SERIAL2_BASE) && 102 (offset < IO_SERIAL2_BASE + IO_SERIAL_EXTENT)) { 103 /* 104 * SMSC FDC37C93xAPM SuperIO chip 105 * 106 * Serial #2 107 */ 108 result = IO_SUPERIO_PHYS + (offset << 1); 109 } else if ((offset >= IO_ISP1161_BASE) && 110 (offset < IO_ISP1161_BASE + IO_ISP1161_EXTENT)) { 111 /* 112 * Philips USB ISP1161x chip 113 */ 114 result = IO_ISP1161_PHYS + offset - IO_ISP1161_BASE; 115 } else { 116 /* 117 * safe default. 118 */ 119 printk("Warning: unexpected port in %s( offset = 0x%lx )\n", 120 __func__, offset); 121 result = PVR; 122 } 123 124 return (void __iomem *)result; 125 } 126