1/* 2 * iohelper.h 3 * helper for define functions to access ISDN hardware 4 * supported are memory mapped IO 5 * indirect port IO (one port for address, one for data) 6 * 7 * Author Karsten Keil <keil@isdn4linux.de> 8 * 9 * Copyright 2009 by Karsten Keil <keil@isdn4linux.de> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 23 * 24 */ 25 26#ifndef _IOHELPER_H 27#define _IOHELPER_H 28 29typedef u8 (read_reg_func)(void *hwp, u8 offset); 30typedef void (write_reg_func)(void *hwp, u8 offset, u8 value); 31typedef void (fifo_func)(void *hwp, u8 offset, u8 *datap, int size); 32 33struct _ioport { 34 u32 port; 35 u32 ale; 36}; 37 38#define IOFUNC_IO(name, hws, ap) \ 39 static u8 Read##name##_IO(void *p, u8 off) {\ 40 struct hws *hw = p;\ 41 return inb(hw->ap.port + off);\ 42 } \ 43 static void Write##name##_IO(void *p, u8 off, u8 val) {\ 44 struct hws *hw = p;\ 45 outb(val, hw->ap.port + off);\ 46 } \ 47 static void ReadFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) {\ 48 struct hws *hw = p;\ 49 insb(hw->ap.port + off, dp, size);\ 50 } \ 51 static void WriteFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) {\ 52 struct hws *hw = p;\ 53 outsb(hw->ap.port + off, dp, size);\ 54 } 55 56#define IOFUNC_IND(name, hws, ap) \ 57 static u8 Read##name##_IND(void *p, u8 off) {\ 58 struct hws *hw = p;\ 59 outb(off, hw->ap.ale);\ 60 return inb(hw->ap.port);\ 61 } \ 62 static void Write##name##_IND(void *p, u8 off, u8 val) {\ 63 struct hws *hw = p;\ 64 outb(off, hw->ap.ale);\ 65 outb(val, hw->ap.port);\ 66 } \ 67 static void ReadFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) {\ 68 struct hws *hw = p;\ 69 outb(off, hw->ap.ale);\ 70 insb(hw->ap.port, dp, size);\ 71 } \ 72 static void WriteFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) {\ 73 struct hws *hw = p;\ 74 outb(off, hw->ap.ale);\ 75 outsb(hw->ap.port, dp, size);\ 76 } 77 78#define IOFUNC_MEMIO(name, hws, typ, adr) \ 79 static u8 Read##name##_MIO(void *p, u8 off) {\ 80 struct hws *hw = p;\ 81 return readb(((typ *)hw->adr) + off);\ 82 } \ 83 static void Write##name##_MIO(void *p, u8 off, u8 val) {\ 84 struct hws *hw = p;\ 85 writeb(val, ((typ *)hw->adr) + off);\ 86 } \ 87 static void ReadFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) {\ 88 struct hws *hw = p;\ 89 while (size--)\ 90 *dp++ = readb(((typ *)hw->adr) + off);\ 91 } \ 92 static void WriteFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) {\ 93 struct hws *hw = p;\ 94 while (size--)\ 95 writeb(*dp++, ((typ *)hw->adr) + off);\ 96 } 97 98#define ASSIGN_FUNC(typ, name, dest) do {\ 99 dest.read_reg = &Read##name##_##typ;\ 100 dest.write_reg = &Write##name##_##typ;\ 101 dest.read_fifo = &ReadFiFo##name##_##typ;\ 102 dest.write_fifo = &WriteFiFo##name##_##typ;\ 103 } while (0) 104#define ASSIGN_FUNC_IPAC(typ, target) do {\ 105 ASSIGN_FUNC(typ, ISAC, target.isac);\ 106 ASSIGN_FUNC(typ, IPAC, target);\ 107 } while (0) 108 109#endif 110