diff options
Diffstat (limited to 'drivers/isdn/hardware/mISDN/iohelper.h')
| -rw-r--r-- | drivers/isdn/hardware/mISDN/iohelper.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/mISDN/iohelper.h b/drivers/isdn/hardware/mISDN/iohelper.h new file mode 100644 index 000000000..c3e7bb1da --- /dev/null +++ b/drivers/isdn/hardware/mISDN/iohelper.h @@ -0,0 +1,109 @@ +/* + * 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 |