options.c

qnx powerpc MPC8245的 BSP源文件

/*
 * $QNXLicenseC: 
 * Copyright 2007, QNX Software Systems.  
 *  
 * Licensed under the Apache License, Version 2.0 (the "License"). You  
 * may not reproduce, modify or distribute this software except in  
 * compliance with the License. You may obtain a copy of the License  
 * at: http://www.apache.org/licenses/LICENSE-2.0  
 *  
 * Unless required by applicable law or agreed to in writing, software  
 * distributed under the License is distributed on an "AS IS" basis,  
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied. 
 * 
 * This file may contain contributions from others, either as  
 * contributors under the License or as licensors under other terms.   
 * Please review this entire file for other proprietary rights or license  
 * notices, as well as the QNX Development Suite License Guide at  
 * http://licensing.qnx.com/license-guide/ for other information. 
 * $ 
 */





/*
#ifdef __USAGE
%C - Serial driver for 8250's

%C [options] [port[^shift][,irq]] &
Options:
 -b number    Define initial baud rate (default 57600)
 -c clk[/div] Set the input clock rate and divisor
 -C number    Size of canonical input buffer (default 256)
 -e           Set options to "edit" mode
 -E           Set options to "raw" mode (default)
 -I number    Size of raw input buffer (default 2048)
 -f           Enable hardware flow control (default)
 -F           Disable hardware flow control
 -O number    Size of output buffer (default 2048)
 -s           Enable software flow control
 -S           Disable software flow control (default)
 -t number    Enable recieve FIFO and set receive FIFO trigger level
 -T number    Enable transmit FIFO and set transmit FIFO size
 -u unit      Set serial unit number (default 1)
#endif
*/
#include "externs.h"


unsigned
options(int argc, char *argv[]) {
	int opt, numports = 0;
	char *cp;
	void *link;
	unsigned unit;
	unsigned fifo_tx = 0, fifo_rx = 0;
	static TTYINIT devinit ={
		0, 0, 0, 57600,
		2048, 2048, 256,
		0, 0, 0, 0, 0, 0, 0,
		"/dev/ser" };

	// Initialize the devinit to raw mode
	ttc(TTC_INIT_RAW, &devinit, 0);

	sys_ttyinit(&devinit);
	
	unit = 1;
	while(optind < argc) {
		// Process dash options.
		while((opt = getopt(argc, argv, IO_CHAR_SERIAL_OPTIONS "c:t:T:u:")) != -1) {	
			switch(ttc(TTC_SET_OPTION, &devinit, opt)) {
			case 'c':
				devinit.clk = strtoul(optarg, &optarg, 0);
				if((cp = strchr(optarg, '/'))) {
					devinit.div = strtoul(cp + 1, NULL, 0);
				}
				break;
			case 't':
				fifo_rx = strtoul(optarg, NULL, 0);
				if( !((fifo_rx == 1) || (fifo_rx == 4) || (fifo_rx == 8) || (fifo_rx == 14)) ) {
					fprintf(stderr,"Illegal rx fifo trigger. \n");
					fprintf(stderr,"Trigger number must be 1, 4, 8 or 14. \n");
					fprintf(stderr,"Rx trigger will not be enabled.\n\n");
					fifo_rx = 0;
				}
				break;
			case 'T':
				fifo_tx = strtoul(optarg, NULL, 0);
				if( !((fifo_tx == 1) || (fifo_tx == 4) || (fifo_tx == 8) || (fifo_tx == 14)) ) {
					fprintf(stderr,"Illegal tx fifo size. \n");
					fprintf(stderr,"Tx fifo size must be 1, 4, 8 or 14. \n");
					fprintf(stderr,"Tx fifo will not be enabled.\n\n");
					fifo_tx = 0;
				}
                break;
			case 'u':
				unit = strtoul(optarg, NULL, 0);
				break;
			}
		}

        //Store the rx and tx fifo's
		devinit.fifo = fifo_rx | (fifo_tx << 4);

		// Process ports and interrupts.
		while(optind < argc  &&  *(optarg = argv[optind]) != '-') {

			devinit.port = strtoull(optarg, &optarg, 16);
			if(*optarg == '^') {
				devinit.port_shift = strtoul(optarg + 1, &optarg, 0);
			}
			if(*optarg == ',') {
				devinit.intr = strtoul(optarg + 1, NULL, 0);
			}
			create_device(&devinit, unit++);
			++numports;
			++optind;
		}
	}
	if(numports == 0) {
		link = NULL;
		for( ;; ) {
			link = query_default_device(&devinit, link);
			if(link == NULL) break;
			create_device(&devinit, unit++);
			++numports;
		}
	}
	return(numports);
}