Karsten Keil | cae86d4 | 2009-07-22 19:42:46 +0200 | [diff] [blame] | 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 | |
Karsten Keil | 663a31c | 2009-07-27 08:20:55 -0700 | [diff] [blame] | 29 | typedef u8 (read_reg_func)(void *hwp, u8 offset); |
| 30 | typedef void (write_reg_func)(void *hwp, u8 offset, u8 value); |
| 31 | typedef void (fifo_func)(void *hwp, u8 offset, u8 *datap, int size); |
Karsten Keil | cae86d4 | 2009-07-22 19:42:46 +0200 | [diff] [blame] | 32 | |
| 33 | struct _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) {\ |
Karsten Keil | 663a31c | 2009-07-27 08:20:55 -0700 | [diff] [blame] | 93 | struct hws *hw = p;\ |
Karsten Keil | cae86d4 | 2009-07-22 19:42:46 +0200 | [diff] [blame] | 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 | |
Karsten Keil | 663a31c | 2009-07-27 08:20:55 -0700 | [diff] [blame] | 109 | #endif |