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| 538 | mauro | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
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| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
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| 12 | * (see the web pages for full authors list) |
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| 13 | * |
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| 14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 15 | * |
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| 16 | * http://www.sssup.it |
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| 17 | * http://retis.sssup.it |
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| 18 | * http://shark.sssup.it |
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| 19 | */ |
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| 20 | |||
| 21 | /* |
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| 22 | * Copyright (C) 2000 Gerardo Lamastra |
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| 23 | * |
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| 24 | * This program is free software; you can redistribute it and/or modify |
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| 25 | * it under the terms of the GNU General Public License as published by |
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| 26 | * the Free Software Foundation; either version 2 of the License, or |
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| 27 | * (at your option) any later version. |
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| 28 | * |
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| 29 | * This program is distributed in the hope that it will be useful, |
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| 30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 32 | * GNU General Public License for more details. |
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| 33 | * |
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| 34 | * You should have received a copy of the GNU General Public License |
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| 35 | * along with this program; if not, write to the Free Software |
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| 36 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 37 | * |
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| 38 | */ |
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| 39 | |||
| 40 | #ifndef __SCOM_H__ |
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| 41 | #define __SCOM_H__ |
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| 42 | |||
| 43 | /* Number of available COM links */ |
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| 44 | #define COM_LINKS 4 |
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| 45 | |||
| 46 | #define COM1 0 |
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| 47 | #define COM2 1 |
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| 48 | #define COM3 2 |
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| 49 | #define COM4 3 |
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| 50 | |||
| 51 | /* These values identify interrupt type */ |
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| 52 | #define RX_FULL 1 |
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| 53 | #define TX_EMPTY 2 |
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| 54 | #define LS_CHANGED 4 |
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| 55 | #define MS_CHANGED 8 |
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| 56 | |||
| 57 | /* This is set when the channel is open */ |
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| 58 | #define LINK_BUSY 128 |
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| 59 | /* This is set if the fast handler is installed */ |
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| 60 | #define FAST_INSTALLED 64 |
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| 61 | |||
| 62 | /* Register displacements */ |
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| 63 | #define THR 0 |
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| 64 | #define RBR 0 |
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| 65 | #define IER 1 |
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| 66 | #define FCR 2 |
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| 67 | #define IIR 2 |
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| 68 | #define LCR 3 |
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| 69 | #define MCR 4 |
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| 70 | #define LSR 5 |
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| 71 | #define MSR 6 |
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| 72 | #define SPad 7 |
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| 73 | |||
| 74 | /* Parity value */ |
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| 75 | #define NONE 0 |
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| 76 | #define ODD 1 |
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| 77 | #define EVEN 3 |
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| 78 | |||
| 79 | /* Used for decoding the IIR status */ |
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| 80 | extern const int IIRbits[]; |
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| 81 | #define DECODE(v) IIRbits[((v >> 1) & 3)] |
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| 82 | #define PENDIRQ(v) !((v) & 1) |
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| 83 | |||
| 84 | /* Bit setting macros */ |
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| 85 | #define bit_on(v,b) v |= (b) |
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| 86 | #define bit_off(v,b) v &= (~(b)) |
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| 87 | |||
| 88 | int com_open(unsigned int port,DWORD speed,BYTE parity,BYTE len,BYTE stop); |
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| 89 | int com_close(unsigned int port); |
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| 90 | unsigned com_read(unsigned int port,unsigned int reg); |
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| 91 | unsigned com_receive(unsigned int port); |
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| 92 | void com_write(unsigned int port,unsigned int reg,unsigned int value); |
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| 93 | void com_send(unsigned int port,BYTE b); |
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| 94 | |||
| 95 | #endif |