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cebix |
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/* |
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* serial.h - Serial device driver |
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* |
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* Basilisk II (C) 1997-1999 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#ifndef SERIAL_H |
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#define SERIAL_H |
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/* |
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* port: |
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* 0 - .AIn |
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* 1 - .AOut |
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* 2 - .BIn |
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* 3 - .BOut |
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*/ |
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extern int16 SerialOpen(uint32 pb, uint32 dce, int port); |
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extern int16 SerialPrime(uint32 pb, uint32 dce, int port); |
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extern int16 SerialControl(uint32 pb, uint32 dce, int port); |
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extern int16 SerialStatus(uint32 pb, uint32 dce, int port); |
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extern int16 SerialClose(uint32 pb, uint32 dce, int port); |
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extern void SerialInterrupt(void); |
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// System specific and internal functions/data |
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extern void SerialInit(void); |
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extern void SerialExit(void); |
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// Serial driver Deferred Task structure |
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enum { |
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serdtCode = 20, // DT code is stored here |
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serdtResult = 30, |
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serdtDCE = 34, |
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SIZEOF_serdt = 38 |
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}; |
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// Variables for one (In/Out combined) serial port |
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// To implement a serial driver, you create a subclass of SERDPort |
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class SERDPort { |
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public: |
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SERDPort() |
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{ |
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is_open = false; |
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input_dt = output_dt = 0; |
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} |
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virtual int16 Open(uint16 config) = 0; |
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virtual int16 PrimeIn(uint32 pb, uint32 dce) = 0; |
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virtual int16 PrimeOut(uint32 pb, uint32 dce) = 0; |
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virtual int16 Control(uint32 pb, uint32 dce, uint16 code) = 0; |
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virtual int16 Status(uint32 pb, uint32 dce, uint16 code) = 0; |
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virtual int16 Close(void) = 0; |
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bool is_open; // Port has been opened |
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uint8 cum_errors; // Cumulative errors |
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bool read_pending; // Read operation pending |
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bool read_done; // Read operation complete |
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uint32 input_dt; // Mac address of Deferred Task for reading |
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bool write_pending; // Write operation pending |
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bool write_done; // Write operation complete |
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uint32 output_dt; // Mac address of Deferred Task for writing |
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}; |
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extern SERDPort *the_serd_port[2]; |
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#endif |
