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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * iohelper.h4 * helper for define functions to access ISDN hardware5 * supported are memory mapped IO6 * indirect port IO (one port for address, one for data)7 *8 * Author Karsten Keil <keil@isdn4linux.de>9 *10 * Copyright 2009 by Karsten Keil <keil@isdn4linux.de>11 */12 13#ifndef _IOHELPER_H14#define _IOHELPER_H15 16typedef u8 (read_reg_func)(void *hwp, u8 offset);17typedef void (write_reg_func)(void *hwp, u8 offset, u8 value);18typedef void (fifo_func)(void *hwp, u8 offset, u8 *datap, int size);19 20struct _ioport {21 u32 port;22 u32 ale;23};24 25#define IOFUNC_IO(name, hws, ap) \26 static u8 Read##name##_IO(void *p, u8 off) { \27 struct hws *hw = p; \28 return inb(hw->ap.port + off); \29 } \30 static void Write##name##_IO(void *p, u8 off, u8 val) { \31 struct hws *hw = p; \32 outb(val, hw->ap.port + off); \33 } \34 static void ReadFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) { \35 struct hws *hw = p; \36 insb(hw->ap.port + off, dp, size); \37 } \38 static void WriteFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) { \39 struct hws *hw = p; \40 outsb(hw->ap.port + off, dp, size); \41 }42 43#define IOFUNC_IND(name, hws, ap) \44 static u8 Read##name##_IND(void *p, u8 off) { \45 struct hws *hw = p; \46 outb(off, hw->ap.ale); \47 return inb(hw->ap.port); \48 } \49 static void Write##name##_IND(void *p, u8 off, u8 val) { \50 struct hws *hw = p; \51 outb(off, hw->ap.ale); \52 outb(val, hw->ap.port); \53 } \54 static void ReadFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) { \55 struct hws *hw = p; \56 outb(off, hw->ap.ale); \57 insb(hw->ap.port, dp, size); \58 } \59 static void WriteFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) { \60 struct hws *hw = p; \61 outb(off, hw->ap.ale); \62 outsb(hw->ap.port, dp, size); \63 }64 65#define IOFUNC_MEMIO(name, hws, typ, adr) \66 static u8 Read##name##_MIO(void *p, u8 off) { \67 struct hws *hw = p; \68 return readb(((typ *)hw->adr) + off); \69 } \70 static void Write##name##_MIO(void *p, u8 off, u8 val) { \71 struct hws *hw = p; \72 writeb(val, ((typ *)hw->adr) + off); \73 } \74 static void ReadFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) { \75 struct hws *hw = p; \76 while (size--) \77 *dp++ = readb(((typ *)hw->adr) + off); \78 } \79 static void WriteFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) { \80 struct hws *hw = p; \81 while (size--) \82 writeb(*dp++, ((typ *)hw->adr) + off); \83 }84 85#define ASSIGN_FUNC(typ, name, dest) do { \86 dest.read_reg = &Read##name##_##typ; \87 dest.write_reg = &Write##name##_##typ; \88 dest.read_fifo = &ReadFiFo##name##_##typ; \89 dest.write_fifo = &WriteFiFo##name##_##typ; \90 } while (0)91#define ASSIGN_FUNC_IPAC(typ, target) do { \92 ASSIGN_FUNC(typ, ISAC, target.isac); \93 ASSIGN_FUNC(typ, IPAC, target); \94 } while (0)95 96#endif97