Generic Ethernet driver for cc65 targets. The actual hardware driver is loaded as relocatable module.

cpu/6502/Makefile.6502

@@ -30,7 +30,7 @@
 #
 # Author: Oliver Schmidt <ol.sc@web.de>
 #
-# $Id: Makefile.6502,v 1.12 2007/08/30 20:47:14 oliverschmidt Exp $
+# $Id: Makefile.6502,v 1.13 2007/11/20 21:12:00 oliverschmidt Exp $
 #
 
 ifndef CONTIKI
@@ -49,12 +49,15 @@ ifndef LD65_OBJ
   ${error LD65_OBJ not defined! You must specify where the cc65 objects reside!}
 endif
 
+all: cs8900a.eth
+
 CONTIKI_TARGET_DIRS = .
 CONTIKI_CPU_DIRS    = . net sys
 CONTIKI_TARGET_MAIN = ${addprefix $(OBJECTDIR)/,contiki-main.o}
 
 CONTIKI_TARGET_SOURCEFILES = contiki-main.c
-CONTIKI_CPU_SOURCEFILES    = clock.c mtarch.c mtarch-asm.S lc-asm.S uip_arch.c
+CONTIKI_CPU_SOURCEFILES    = clock.c mtarch.c mtarch-asm.S lc-asm.S \
+                             uip_arch.c ethernet-drv.c ethernet.c
 
 CONTIKI_SOURCEFILES += $(CONTIKI_CPU_SOURCEFILES) $(CONTIKI_TARGET_SOURCEFILES)
 
@@ -93,3 +96,6 @@ CUSTOM_RULE_C_TO_CO = 1
 	$(CC) $(CFLAGS) -DAUTOSTART_ENABLE $< -o $(@:.co=.s)
 	@$(AS) $(ASFLAGS) $(@:.co=.s) -o $@
 	@rm -f $(@:.co=.s)
+
+%.eth: $(OBJECTDIR)/%.o
+	$(LD) -t module -m $@.map $< -o $@

cpu/6502/net/ethernet-drv.c

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2007, Swedish Institute of Computer Science
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * @(#)$Id: ethernet-drv.c,v 1.1 2007/11/20 21:10:20 oliverschmidt Exp $
+ */
+
+#include <stdio.h>
+
+#include "contiki-net.h"
+#include "ethernet.h"
+#include "net/uip-neighbor.h"
+
+#include "ethernet-drv.h"
+
+#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+
+PROCESS(ethernet_process, "Ethernet driver");
+
+/*---------------------------------------------------------------------------*/
+u8_t
+ethernet_output(void)
+{
+  uip_arp_out();
+  ethernet_send();
+  
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+static void
+pollhandler(void)
+{
+  process_poll(&ethernet_process);
+  uip_len = ethernet_poll();
+
+  if(uip_len > 0) {
+#if UIP_CONF_IPV6
+    if(BUF->type == htons(UIP_ETHTYPE_IPV6)) {
+      uip_neighbor_add(&IPBUF->srcipaddr, &BUF->src);
+      tcpip_input();
+    } else
+#endif /* UIP_CONF_IPV6 */
+    if(BUF->type == htons(UIP_ETHTYPE_IP)) {
+      uip_len -= sizeof(struct uip_eth_hdr);
+      tcpip_input();
+    } else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
+      uip_arp_arpin();
+      /* If the above function invocation resulted in data that
+	 should be sent out on the network, the global variable
+	 uip_len is set to a value > 0. */
+      if(uip_len > 0) {
+	ethernet_send();
+      }
+    }
+  }
+}
+/*---------------------------------------------------------------------------*/
+PROCESS_THREAD(ethernet_process, ev, data)
+{
+  PROCESS_POLLHANDLER(pollhandler());
+
+  PROCESS_BEGIN();
+
+  ethernet_init((struct ethernet_config *)data);
+
+  tcpip_set_outputfunc(ethernet_output);
+
+  process_poll(&ethernet_process);
+
+  PROCESS_WAIT_UNTIL(ev == PROCESS_EVENT_EXIT);
+
+  ethernet_exit();
+
+  PROCESS_END();
+}
+/*---------------------------------------------------------------------------*/

cpu/6502/net/ethernet-drv.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2007, Swedish Institute of Computer Science.
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ *
+ * This file is part of the Contiki operating system.
+ * 
+ * $Id: ethernet-drv.h,v 1.1 2007/11/20 21:10:20 oliverschmidt Exp $
+ */
+
+#ifndef __ETHERNET_DRV_H__
+#define __ETHERNET_DRV_H__
+
+#include "contiki.h"
+
+struct ethernet_config {
+  u16_t addr;
+  char  name[12+1];
+};
+
+PROCESS_NAME(ethernet_process);
+
+u8_t ethernet_output(void);
+
+#endif /* __ETHERNET_DRV_H__ */

cpu/6502/net/ethernet.c

@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2007, Swedish Institute of Computer Science
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * Author: Oliver Schmidt <ol.sc@web.de>
+ *
+ * @(#)$Id: ethernet.c,v 1.1 2007/11/20 21:10:21 oliverschmidt Exp $
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <modload.h>
+
+#include "contiki-net.h"
+#include "ethernet-drv.h"
+
+#include "ethernet.h"
+
+struct {
+  char                signature[4];
+  struct uip_eth_addr ethernet_address;
+  u8_t                *buffer;
+  u16_t		      buffer_size;
+  void __fastcall__   (* init)(u16_t reg);
+  u16_t               (* poll)(void);
+  void __fastcall__   (* send)(u16_t len);
+  void                (* exit)(void);
+} *module;
+
+/*---------------------------------------------------------------------------*/
+static void
+error_exit(void)
+{
+  fprintf(stderr, "Press any key to continue ...\n");
+  getchar();
+  exit(EXIT_FAILURE);
+}
+/*---------------------------------------------------------------------------*/
+void
+ethernet_init(struct ethernet_config *config)
+{
+  static const char signature[4] = {0x65, 0x74, 0x68, 0x01};
+  struct mod_ctrl module_control = {read};
+  u8_t byte;
+
+  module_control.callerdata = open(config->name, O_RDONLY);
+  if(module_control.callerdata == -1) {
+    fprintf(stderr, "%s: %s\n", config->name, strerror(errno));
+    error_exit();
+  }
+
+  byte = mod_load(&module_control);
+  if(byte != MLOAD_OK) {
+    if(byte == MLOAD_ERR_MEM) {
+      fprintf(stderr, "%s: %s\n", config->name, strerror(ENOMEM));
+    } else {
+      fprintf(stderr, "%s: %s %d\n", config->name, "Error", byte);
+    }
+    error_exit();
+  }
+
+  close(module_control.callerdata);
+  module = module_control.module;
+
+  for(byte = 0; byte < 4; byte++) {
+    if(module->signature[byte] != signature[byte]) {
+      fprintf(stderr, "%s: %s\n", config->name, "No ETH Driver");
+      error_exit();
+    }
+  }
+
+  module->buffer = uip_buf;
+  module->buffer_size = UIP_BUFSIZE;
+  module->init(config->addr);
+
+  uip_setethaddr(module->ethernet_address);
+}
+/*---------------------------------------------------------------------------*/
+u16_t
+ethernet_poll(void)
+{
+  return module->poll();
+}
+/*---------------------------------------------------------------------------*/
+void
+ethernet_send(void)
+{
+  module->send(uip_len);
+}
+/*---------------------------------------------------------------------------*/
+void
+ethernet_exit(void)
+{
+  module->exit();
+
+  mod_free(module);
+}
+/*---------------------------------------------------------------------------*/

cpu/6502/net/ethernet.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2007, Swedish Institute of Computer Science.
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ *
+ * This file is part of the Contiki operating system.
+ * 
+ * Author: Oliver Schmidt <ol.sc@web.de>
+ *
+ * $Id: ethernet.h,v 1.1 2007/11/20 21:10:21 oliverschmidt Exp $
+ */
+
+#ifndef __ETHERNET_H__
+#define __ETHERNET_H__
+
+void ethernet_init(struct ethernet_config *config);
+u16_t ethernet_poll(void);
+void ethernet_send(void);
+void ethernet_exit(void);
+
+#endif /* __ETHERNET_H__ */