kernel-fxtec-pro1x/drivers/isdn/hardware/mISDN/iohelper.h
Karsten Keil 663a31ce5b mISDN: Fix wrong struct name in macro and clarifications
Based on comments from Joe Perches <joe@perches.com>. Thanks.

Fix IOFUNC_MEMIO macro. WriteFiFo##name##_MIO use the wrong struct name,
this was missed because the macro was only called with this name.

Clarify with _func that the defined types are functions.
Add names to the parameters for better understanding the purpose.

Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-27 08:20:55 -07:00

109 lines
3.3 KiB
C

/*
* iohelper.h
* helper for define functions to access ISDN hardware
* supported are memory mapped IO
* indirect port IO (one port for address, one for data)
*
* Author Karsten Keil <keil@isdn4linux.de>
*
* Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _IOHELPER_H
#define _IOHELPER_H
typedef u8 (read_reg_func)(void *hwp, u8 offset);
typedef void (write_reg_func)(void *hwp, u8 offset, u8 value);
typedef void (fifo_func)(void *hwp, u8 offset, u8 *datap, int size);
struct _ioport {
u32 port;
u32 ale;
};
#define IOFUNC_IO(name, hws, ap) \
static u8 Read##name##_IO(void *p, u8 off) {\
struct hws *hw = p;\
return inb(hw->ap.port + off);\
} \
static void Write##name##_IO(void *p, u8 off, u8 val) {\
struct hws *hw = p;\
outb(val, hw->ap.port + off);\
} \
static void ReadFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) {\
struct hws *hw = p;\
insb(hw->ap.port + off, dp, size);\
} \
static void WriteFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) {\
struct hws *hw = p;\
outsb(hw->ap.port + off, dp, size);\
}
#define IOFUNC_IND(name, hws, ap) \
static u8 Read##name##_IND(void *p, u8 off) {\
struct hws *hw = p;\
outb(off, hw->ap.ale);\
return inb(hw->ap.port);\
} \
static void Write##name##_IND(void *p, u8 off, u8 val) {\
struct hws *hw = p;\
outb(off, hw->ap.ale);\
outb(val, hw->ap.port);\
} \
static void ReadFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) {\
struct hws *hw = p;\
outb(off, hw->ap.ale);\
insb(hw->ap.port, dp, size);\
} \
static void WriteFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) {\
struct hws *hw = p;\
outb(off, hw->ap.ale);\
outsb(hw->ap.port, dp, size);\
}
#define IOFUNC_MEMIO(name, hws, typ, adr) \
static u8 Read##name##_MIO(void *p, u8 off) {\
struct hws *hw = p;\
return readb(((typ *)hw->adr) + off);\
} \
static void Write##name##_MIO(void *p, u8 off, u8 val) {\
struct hws *hw = p;\
writeb(val, ((typ *)hw->adr) + off);\
} \
static void ReadFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) {\
struct hws *hw = p;\
while (size--)\
*dp++ = readb(((typ *)hw->adr) + off);\
} \
static void WriteFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) {\
struct hws *hw = p;\
while (size--)\
writeb(*dp++, ((typ *)hw->adr) + off);\
}
#define ASSIGN_FUNC(typ, name, dest) do {\
dest.read_reg = &Read##name##_##typ;\
dest.write_reg = &Write##name##_##typ;\
dest.read_fifo = &ReadFiFo##name##_##typ;\
dest.write_fifo = &WriteFiFo##name##_##typ;\
} while (0)
#define ASSIGN_FUNC_IPAC(typ, target) do {\
ASSIGN_FUNC(typ, ISAC, target.isac);\
ASSIGN_FUNC(typ, IPAC, target);\
} while (0)
#endif