Added device driver for the RR-Net cartridge
diff --git a/contiki-c64/uip/rrnet-drv.c b/contiki-c64/uip/rrnet-drv.c
new file mode 100644
index 0000000..c8fe253
--- /dev/null
+++ b/contiki-c64/uip/rrnet-drv.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2001, Adam Dunkels.
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Adam Dunkels.
+ * 4. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 uIP TCP/IP stack.
+ *
+ * $Id: rrnet-drv.c,v 1.1 2003/07/30 22:40:36 adamdunkels Exp $
+ *
+ */
+
+#define NULL (void *)0
+
+#include "uip.h"
+#include "uip_arp.h"
+#include "uip-signal.h"
+#include "loader.h"
+#include "cs8900a.h"
+
+#include "dispatcher.h"
+#include "ek.h"
+
+#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+
+static u8_t i, arptimer;
+static u16_t start, current;
+
+static void rrnet_drv_idle(void);
+static DISPATCHER_SIGHANDLER(rrnet_drv_sighandler, s, data);
+static struct dispatcher_proc p =
+ {DISPATCHER_PROC("TCP/IP/RR-Net driver", rrnet_drv_idle,
+ rrnet_drv_sighandler, NULL)};
+static ek_id_t id;
+
+
+
+
+/*-----------------------------------------------------------------------------------*/
+static void
+timer(void)
+{
+ for(i = 0; i < UIP_CONNS; ++i) {
+ uip_periodic(i);
+ if(uip_len > 0) {
+ uip_arp_out();
+ cs8900a_send();
+ }
+ }
+
+ for(i = 0; i < UIP_UDP_CONNS; i++) {
+ uip_udp_periodic(i);
+ /* 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) {
+ uip_arp_out();
+ cs8900a_send();
+ }
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+static void
+rrnet_drv_idle(void)
+{
+ /* Poll Ethernet device to see if there is a frame avaliable. */
+ uip_len = cs8900a_poll();
+ if(uip_len > 0) {
+ /* A frame was avaliable (and is now read into the uip_buf), so
+ we process it. */
+ if(BUF->type == htons(UIP_ETHTYPE_IP)) {
+ uip_arp_ipin();
+ uip_len -= sizeof(struct uip_eth_hdr);
+ uip_input();
+ /* 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) {
+ uip_arp_out();
+ cs8900a_send();
+ }
+ } 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) {
+ cs8900a_send();
+ }
+ }
+ }
+ /* Check the clock so see if we should call the periodic uIP
+ processing. */
+ current = ek_clock();
+
+ if((current - start) >= CLK_TCK/2) {
+ timer();
+ start = current;
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+LOADER_INIT_FUNC(rrnet_drv_init)
+{
+ if(id == EK_ID_NONE) {
+ id = dispatcher_start(&p);
+
+ arptimer = 0;
+ start = ek_clock();
+
+ asm("lda #1");
+ asm("ora $de01");
+ asm("sta $de01");
+ cs8900a_init();
+
+ dispatcher_listen(uip_signal_uninstall);
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+static
+DISPATCHER_SIGHANDLER(rrnet_drv_sighandler, s, data)
+{
+ DISPATCHER_SIGHANDLER_ARGS(s, data);
+
+ if(s == uip_signal_uninstall) {
+ dispatcher_exit(&p);
+ id = EK_ID_NONE;
+ LOADER_UNLOAD();
+ }
+}
+/*-----------------------------------------------------------------------------------*/