97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* iohelper.h
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* helper for define functions to access ISDN hardware
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* supported are memory mapped IO
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* indirect port IO (one port for address, one for data)
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*
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* Author Karsten Keil <keil@isdn4linux.de>
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*
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* Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
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*/
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#ifndef _IOHELPER_H
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#define _IOHELPER_H
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typedef u8 (read_reg_func)(void *hwp, u8 offset);
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typedef void (write_reg_func)(void *hwp, u8 offset, u8 value);
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typedef void (fifo_func)(void *hwp, u8 offset, u8 *datap, int size);
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struct _ioport {
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u32 port;
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u32 ale;
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};
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#define IOFUNC_IO(name, hws, ap) \
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static u8 Read##name##_IO(void *p, u8 off) { \
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struct hws *hw = p; \
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return inb(hw->ap.port + off); \
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} \
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static void Write##name##_IO(void *p, u8 off, u8 val) { \
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struct hws *hw = p; \
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outb(val, hw->ap.port + off); \
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} \
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static void ReadFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) { \
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struct hws *hw = p; \
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insb(hw->ap.port + off, dp, size); \
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} \
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static void WriteFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) { \
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struct hws *hw = p; \
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outsb(hw->ap.port + off, dp, size); \
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}
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#define IOFUNC_IND(name, hws, ap) \
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static u8 Read##name##_IND(void *p, u8 off) { \
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struct hws *hw = p; \
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outb(off, hw->ap.ale); \
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return inb(hw->ap.port); \
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} \
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static void Write##name##_IND(void *p, u8 off, u8 val) { \
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struct hws *hw = p; \
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outb(off, hw->ap.ale); \
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outb(val, hw->ap.port); \
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} \
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static void ReadFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) { \
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struct hws *hw = p; \
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outb(off, hw->ap.ale); \
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insb(hw->ap.port, dp, size); \
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} \
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static void WriteFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) { \
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struct hws *hw = p; \
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outb(off, hw->ap.ale); \
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outsb(hw->ap.port, dp, size); \
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}
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#define IOFUNC_MEMIO(name, hws, typ, adr) \
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static u8 Read##name##_MIO(void *p, u8 off) { \
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struct hws *hw = p; \
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return readb(((typ *)hw->adr) + off); \
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} \
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static void Write##name##_MIO(void *p, u8 off, u8 val) { \
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struct hws *hw = p; \
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writeb(val, ((typ *)hw->adr) + off); \
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} \
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static void ReadFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) { \
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struct hws *hw = p; \
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while (size--) \
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*dp++ = readb(((typ *)hw->adr) + off); \
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} \
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static void WriteFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) { \
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struct hws *hw = p; \
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while (size--) \
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writeb(*dp++, ((typ *)hw->adr) + off); \
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}
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#define ASSIGN_FUNC(typ, name, dest) do { \
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dest.read_reg = &Read##name##_##typ; \
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dest.write_reg = &Write##name##_##typ; \
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dest.read_fifo = &ReadFiFo##name##_##typ; \
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dest.write_fifo = &WriteFiFo##name##_##typ; \
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} while (0)
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#define ASSIGN_FUNC_IPAC(typ, target) do { \
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ASSIGN_FUNC(typ, ISAC, target.isac); \
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ASSIGN_FUNC(typ, IPAC, target); \
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} while (0)
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#endif
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