481 lines
17 KiB
C
Executable file
481 lines
17 KiB
C
Executable file
/************************************************************************/
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/* */
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/* ***** ***** */
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/* ***** ***** */
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/* ***** ***** */
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/* ***** ***** */
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/* *************** *************** */
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/* ***************** ***************** */
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/* *************** *************** */
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/* ***** ***** TheNetNode */
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/* ***** ***** Portable */
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/* ***** ***** Network */
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/* ***** ***** Software */
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/* */
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/* File os/linux/vanlinux.c (maintained by: DG1KWA) */
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/* */
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/* This file is part of "TheNetNode" - Software Package */
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/* */
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/* Copyright (C) 1998 - 2008 NORD><LINK e.V. Braunschweig */
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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 NORD><LINK ALAS (Allgemeine Lizenz fuer */
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/* Amateurfunk Software) as published by Hans Georg Giese (DF2AU) */
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/* on 13/Oct/1992; either version 1, or (at your option) any later */
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/* version. */
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/* */
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/* This program is distributed WITHOUT ANY WARRANTY only for further */
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/* development and learning purposes. See the ALAS (Allgemeine Lizenz */
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/* fuer Amateurfunk Software). */
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/* */
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/* You should have received a copy of the NORD><LINK ALAS (Allgemeine */
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/* Lizenz fuer Amateurfunk Software) along with this program; if not, */
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/* write to NORD><LINK e.V., Hinter dem Berge 5, D-38108 Braunschweig */
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/* */
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/* Dieses Programm ist PUBLIC DOMAIN, mit den Einschraenkungen durch */
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/* die ALAS (Allgemeine Lizenz fuer Amateurfunk Software), entweder */
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/* Version 1, veroeffentlicht von Hans Georg Giese (DF2AU), */
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/* am 13.Oct.1992, oder (wenn gewuenscht) jede spaetere Version. */
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/* */
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/* Dieses Programm wird unter Haftungsausschluss vertrieben, aus- */
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/* schliesslich fuer Weiterentwicklungs- und Lehrzwecke. Naeheres */
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/* koennen Sie der ALAS (Allgemeine Lizenz fuer Amateurfunk Software) */
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/* entnehmen. */
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/* */
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/* Sollte dieser Software keine ALAS (Allgemeine Lizenz fuer Amateur- */
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/* funk Software) beigelegen haben, wenden Sie sich bitte an */
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/* NORD><LINK e.V., Hinter dem Berge 5, D-38108 Braunschweig */
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/* */
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/************************************************************************/
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#include "tnn.h"
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#ifdef VANESSA
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#include "vanlinux.h"
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/* Macros aus /usr/include/asm/io.h - da die bei einigen Linux-Distri- */
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/* butionen fehlen .. */
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/*
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* readX/writeX() are used to access memory mapped devices. On some
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* architectures the memory mapped IO stuff needs to be accessed
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* differently. On the x86 architecture, we just read/write the
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* memory location directly.
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*/
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#ifndef readb
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#define readb(addr) (*(volatile unsigned char *) (addr))
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#endif
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#ifndef readw
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#define readw(addr) (*(volatile unsigned short *) (addr))
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#endif
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#ifndef readl
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#define readl(addr) (*(volatile unsigned int *) (addr))
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#endif
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#ifndef writeb
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#define writeb(b, addr) ((*(volatile unsigned char *) (addr)) = (b))
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#endif
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#ifndef writew
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#define writew(b, addr) ((*(volatile unsigned short *) (addr)) = (b))
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#endif
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#ifndef writel
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#define writel(b, addr) ((*(volatile unsigned int *) (addr)) = (b))
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#endif
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#ifndef memset_io
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#define memset_io(a, b, c) memset((void *)(a), (b), (c))
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#endif
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#ifndef memcpy_fromio
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#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
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#endif
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#ifndef memcpy_toio
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#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
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#endif
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#define ReadVanW(port, what) readw(base + (port<<12) + what)
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#define WriteVanW(port, what, data) writew(data, base + (port<<12) + what)
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#define ReadVanB(port, what) readb(base+(port<<12)+what)
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#define WriteVanB(port, what, data) writeb(data, base + (port<<12) + what)
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#define outportb(adr, data) outb(data, adr)
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#define delay(data) usleep(100000)
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/* lokale Funktionen */
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static void vanessa_ctl(int);
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static BOOLEAN van_enabled(int);
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static void vanessa_send_test(int);
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static void vanessa_get_frame(void);
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static void vanessa_put_frame(void);
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static void vanessa_config(WORD port);
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static void vanessa_reset_tnc(void);
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static BOOLEAN van_tst, van_res, van_cmd;
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static char *base;
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static char van_version[L2PNUM]; /* Versions-Kennung */
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static char van_revision[L2PNUM]; /* der VANESSA */
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static char van_patch[L2PNUM];
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/************************************************************************/
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/* Level1 RX/TX fuer VANESSA */
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/* wird staendig in der main() Hauptschleife aufgerufen. */
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/************************************************************************/
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void vanessa(void)
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{
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register unsigned int port;
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vanessa_get_frame(); /* read VANESSA CRAM */
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vanessa_put_frame(); /* write frame into VANESSA CRAM */
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for (port = 1; port < L2PNUM; port += 2) /* hb9pae 930521 */
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{
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if (van_enabled(port))
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{
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if (ReadVanW(port, dp_cCMD) == 0) /* pruefen of vanessa restart */
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{
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commandflag[port] = TRUE; /* wenn TRUE, parameter uebergeben */
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commandflag[port-1] = TRUE;
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portstat[port].reset_count++; /* und restart zaehlen */
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WriteVanW(port, dp_cCMD, 1);
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}
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}
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}
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if (van_res) /* auxiliary cmd to Vanessa */
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{
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vanessa_reset_tnc(); /* VANESSA resetten */
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van_res = FALSE;
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}
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if (van_cmd || van_tst)
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{
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for (port = 0; port < L2PNUM; ++port) /* hb9pae 930521 */
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{
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if (van_enabled(port))
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{
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if (commandflag[port])
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{
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vanessa_config(port); /* VANESSA Port neue Parameter */
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commandflag[port] = FALSE;
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}
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if (testflag[port])
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{
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vanessa_send_test(port); /* VANESSA Test-Folge senden */
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testflag[port] = FALSE;
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}
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} /* gueltiger VANESSA-Port */
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} /* alle Ports */
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van_tst = van_cmd = FALSE;
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} /* if ( ... ) */
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}
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/************************************************************************/
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/* Vanessa INIT */
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/************************************************************************/
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void vanessa_l1init(void)
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{
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register unsigned int port;
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register int fd;
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/* Device Memory oeffnen */
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if ((fd = open("/dev/mem", O_RDWR)) < 0)
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{
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printf("Error: can't open \"/dev/mem\", errno = %u\n", errno); /* sollte nie passieren */
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printf("(%s)\n", strerror(errno));
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exit(1);
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}
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/* Device als Speicherabbild bereitstellen, Offset bei D0000, Groesse 64 kB */
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if ((base = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0xD0000)) == MAP_FAILED)
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{
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printf("Error: can't map 64kb memory at 0xD0000, errno = %u\n", errno);
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printf("(%s)\n", strerror(errno));
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close(fd);
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exit(1);
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}
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/* Device wieder schliessen */
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close(fd);
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/* IO-Ports anfordern */
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for (port = 0; port < L2PNUM; ++port)
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{
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/* LED IO-Adresse belegen */
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if (ioperm(ledio_adr[port], 3, 1) == -1)
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{
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printf("Error: can't reserve io at address 0x%x, errno = %u\n", ledio_adr[port], errno);
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printf("(%s)\n", strerror(errno));
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}
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/* Reset IO-Adresse belegen */
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if (ioperm(reset_adr[port / 2], 3, 1) == -1)
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{
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printf("Error: can't reserve io at address 0x%x, errno = %u\n", ledio_adr[port], errno);
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printf("(%s)\n", strerror(errno));
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}
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}
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/* Vanessen konfigurieren */
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for (port = 0; port < L2PNUM; ++port)
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{
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if (van_enabled(port))
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{
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vanessa_config(port); /* erst mal konfigurieren */
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outportb(ledio_adr[port], LED_OFF); /* LED Vanessa off */
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WriteVanW(port, dp_iFProd, !CRAM_VALID);
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}
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}
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van_tst = van_res = van_cmd = FALSE;
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}
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/************************************************************************/
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/* Frame aus Kette holen und in Ringbuffer legen */
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/*----------------------------------------------------------------------*/
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void vanessa_put_frame(void)
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{
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register unsigned int port;
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register unsigned int len;
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register unsigned int live;
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MBHEAD *txfhdl;
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LHEAD *l2flp;
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for (live = 0; live < 8; ++live) /* max 4 Frames pro CRAM Buffer */
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{
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l2flp = txl2fl;
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for (port = 0; port < L2PNUM; l2flp++, ++port) /* jeden Port durchlaufen */
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{
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if (kissmode(port) != KISS_VAN)
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continue;
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if (portenabled(port))
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{
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if (kick[port]) /* was zum senden... */
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{
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if (l2flp->head == l2flp)
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{
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kick[port] = FALSE;
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continue;
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}
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if (ReadVanW(port, dp_oFProd) != CRAM_VALID) /* CRAM Buffer free */
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{
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len = 0;
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ulink((LEHEAD *)(txfhdl = (MBHEAD *) l2flp->head));/*Zeiger holen*/
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while (txfhdl->mbgc < txfhdl->mbpc) /* solange Daten vorhanden sind */
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WriteVanB(port, dp_oBuffer + (len++), getchr(txfhdl));
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relink((LEHEAD *)txfhdl, /* als gesendet betrachten und in */
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(LEHEAD *)stfl.tail); /* die gesendet Liste umhaengen */
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kick[port] = ((LHEAD *)l2flp->head != l2flp);
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WriteVanW(port, dp_iBufEmpty, 1); /* Frame wird gesendet... */
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WriteVanW(port, dp_oLFrm, len); /* set size and .. */
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WriteVanW(port, dp_oFProd, CRAM_VALID); /* terminate */
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usleep(50);
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} /* if CRAM_VALID... */
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} /* if kick[port]... */
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} /* Port enabled */
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else
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while (l2flp->head != l2flp)
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relink(ulink((LEHEAD *) l2flp->head), (LEHEAD *)stfl.tail);
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} /* for (port .... */
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} /* for (live .... */
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} /* end */
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/************************************************************************/
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/* vanessa_get_frame() - Frame(s) aus dem VANESSA CRAM holen */
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/*----------------------------------------------------------------------*/
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void vanessa_get_frame(void)
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{
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register unsigned int port;
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WORD i, l;
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MBHEAD *rxfhd;
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for (port = 0; port < L2PNUM; ++port)
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{
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if (van_enabled(port))
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{
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while (ReadVanW(port, dp_iFProd) == CRAM_VALID)
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{
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outportb(ledio_adr[port], LED_ON);
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l = ReadVanW(port, dp_iLFrm);
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if (l > 0)
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{
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(rxfhd = (MBHEAD *)allocb(ALLOC_MBHEAD))->l2port = port;
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for (i = 0; i < l; ++i)
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putchr(ReadVanB(port, dp_iBuffer+i), rxfhd);
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relink((LEHEAD *)rxfhd, (LEHEAD *)rxfl.tail);
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}
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WriteVanW(port, dp_iFProd, !CRAM_VALID);
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outportb(ledio_adr[port], LED_OFF);
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usleep(50);
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}
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}
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}
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}
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/************************************************************************/
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/* VANESSA mit Parametern versorgen */
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/*----------------------------------------------------------------------*/
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void vanessa_config(WORD port)
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{
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UWORD portspeed;
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if (van_enabled(port))
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{
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WriteVanW(port, dp_Slottime, portpar[port].slottime & 0xff);
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WriteVanW(port, dp_TxDelay, portpar[port].txdelay & 0xff);
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WriteVanW(port, dp_Persistance, (dama(port)
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? 0Xff : portpar[port].persistance & 0xff));
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WriteVanW(port, dp_FullDuplex, fullduplex(port)?1:0);
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if (extclock(port))
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portspeed = 0xff07;
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else
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{
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switch (portpar[port].speed)
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{
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case 12: portspeed = 0xff00; break;
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case 24: portspeed = 0xff01; break;
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case 48: portspeed = 0xff02; break;
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case 96: portspeed = 0xff03; break;
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case 192: portspeed = 0xff04; break;
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case 384: portspeed = 0xff05; break;
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default: portspeed = 0xff00; portpar[port].speed = 12;
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}
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}
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WriteVanW(port, dp_vanspeed, portspeed);
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WriteVanB((port&0xfe), ((dp_cData)+0x74F), multibaud(port) ? 1 : 0);
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WriteVanB(port, ((dp_cData)+0x74F), (multibaud(port) ? 1 : 0));
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WriteVanW(port, dp_oMagic, 0);
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WriteVanW(port, dp_reReadParams, CRAM_VALID);
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outportb(ledio_adr[port], LED_OFF);
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WriteVanW(port, dp_iFProd, !CRAM_VALID);
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}
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}
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/************************************************************************/
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/* Reset Befehl an alle VANESSA's geben */
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/*----------------------------------------------------------------------*/
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void vanessa_reset_tnc(void)
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{
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register unsigned int port;
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for (port = 0; port < L2PNUM; ++port) /* Alle FP's durchgehen */
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{
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if ( portpar[port].reset_port /* soll dieser Reset bekommen? */
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&& van_enabled(port)
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)
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{
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portpar[port].reset_port = FALSE; /* rueckstellen */
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outportb(reset_adr[port >> 1], 0xFF); /* set RESET and... */
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delay(50); /* .. wait some time */
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outportb(reset_adr[port >> 1], 0x0); /* remove RESET again */
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}
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}
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}
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/************************************************************************/
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/* TEST-Befehl ausfuehren, funktioniert nur ab VANESSA Firmware 4.0 !! */
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/*----------------------------------------------------------------------*/
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void vanessa_send_test(int port)
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{
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if (van_enabled(port))
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{
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if (ReadVanW(port, dp_oFProd) != CRAM_VALID) /* CRAM Buffer free */
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{
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WriteVanW(port, dp_oLFrm, -1); /* Frame Size = -1 */
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WriteVanW(port, dp_oFProd, CRAM_VALID); /* CRAM buffer valid */
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}
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testflag[port] = FALSE; /* TEST fertig */
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}
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}
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/*******************************************************************/
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/* Testen ob ueberhaupt ne VAN da ist */
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/* Patch dazu gekommen, 22/02/97 DG1KWA */
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/* PS: in der alten Routine war auch noch ein Fehler :-) */
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/*******************************************************************/
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BOOLEAN van_test(int port)
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{
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van_version[port] = 4; /* aktuelle Version steht nicht im DP */
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van_revision[port] = ReadVanB((port&0xFE), dp_cData+0x751) / 16;
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van_patch[port] = ReadVanB((port&0xFE), dp_cData+0x74E); /* new */
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return(ReadVanW(((port&0xFE)+1), dp_cData+0x750) == 0x3412);
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}
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WORD vanessa_dcd(int port)
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{
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WORD state = 0;
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if (!van_enabled(port))
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return 0;
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if (ReadVanW(port,dp_oFProd) == CRAM_VALID) /* Sendedaten in der VAN */
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state |= (WORD) TXBFLAG;
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if (ReadVanW(port,dp_iFProd) == CRAM_VALID) /* Empfangsdaten in der VAN */
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state |= (WORD) RXBFLAG;
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if (ReadVanB(port,dp_iPTT)) /* wir senden ! */
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state |= (WORD) PTTFLAG;
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if (!ReadVanB(port,dp_iDCD)) /* wir empfangen etwas */
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state |= (WORD) DCDFLAG;
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return(state);
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}
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static void vanessa_ctl(int req)
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{
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switch (req)
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{
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case L1CRES : van_res = TRUE; break;
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case L1CCMD : van_cmd = TRUE; break;
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case L1CTST : van_tst = TRUE; break;
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default : break;
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}
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}
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/************************************************************************/
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/* Vanessa EXIT (nur fuer LINUX) */
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/************************************************************************/
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void vanessa_l1exit(void)
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{
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register unsigned int port;
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/* Mem wieder freigeben... */
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munmap(base, 0x10000);
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/* und die IO-Ports */
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for (port = 0; port < L2PNUM; ++port)
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{
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ioperm(ledio_adr[port], 3, 0);
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ioperm(reset_adr[port / 2], 3, 0);
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}
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}
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void vanessa_l1ctl(int req)
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{
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vanessa_ctl(req);
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}
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static BOOLEAN van_enabled(int port)
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{
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return(portenabled(port) && (kissmode(port) == KISS_VAN));
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}
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void van_hwstr(int port, MBHEAD *mbp)
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{
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putprintf(mbp, " v4.%02x%c", van_revision[port], van_patch[port]);
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}
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#endif
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