1 files changed, 75 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/leon_open_eth/leon_open_eth.c b/c/src/lib/libbsp/sparc/leon3/leon_open_eth/leon_open_eth.c
new file mode 100644
index 0000000000..c4586dd309
--- /dev/null
+++ b/c/src/lib/libbsp/sparc/leon3/leon_open_eth/leon_open_eth.c
@@ -0,0 +1,75 @@
+/*
+ *  LEON3 Opencores Ethernet MAC Configuration Information
+ *
+ *  COPYRIGHT (c) 2004.
+ *  Gaisler Research
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+
+#include <bsp.h>
+#include <libchip/open_eth.h>
+#if (OPEN_ETH_DEBUG & OPEN_ETH_DEBUG_PRINT_REGISTERS)
+#include <stdio.h>
+#endif
+
+/*
+ * Default sizes of transmit and receive descriptor areas
+ */
+#define RDA_COUNT     16
+#define TDA_COUNT     16
+
+open_eth_configuration_t leon_open_eth_configuration; 
+
+int rtems_leon_open_eth_driver_attach(
+  struct rtems_bsdnet_ifconfig *config,
+  int attach
+)
+{
+  int device_found = 0;
+  int i;
+  unsigned int conf, iobar;
+  unsigned int base_addr = 0; /* avoid warnings */
+  unsigned int eth_irq = 0;   /* avoid warnings */
+
+
+  /* Scan for MAC AHB slave interface */
+  for (i = 0; i < amba_conf.ahbslv.devnr; i++)
+  {
+    conf = amba_get_confword(amba_conf.ahbslv, i, 0);
+    if (((amba_vendor(conf) == VENDOR_OPENCORES) && (amba_device(conf) == OPENCORES_ETHMAC)) ||
+        ((amba_vendor(conf) == VENDOR_GAISLER) && (amba_device(conf) == GAISLER_ETHAHB)))
+    {
+      iobar = amba_ahb_get_membar(amba_conf.ahbslv, i, 0);
+      base_addr = amba_iobar_start(LEON3_IO_AREA, iobar);
+      eth_irq = amba_irq(conf) + 0x10;
+      device_found = 1;
+      break;
+    }
+  }
+
+
+  if (device_found) 
+  {
+    /* clear control register and reset NIC */
+    *(volatile int *) base_addr = 0;
+    *(volatile int *) base_addr = 0x800;
+    *(volatile int *) base_addr = 0;
+    leon_open_eth_configuration.base_address = base_addr;
+    leon_open_eth_configuration.vector = eth_irq;
+    leon_open_eth_configuration.txd_count = TDA_COUNT;
+    leon_open_eth_configuration.rxd_count = RDA_COUNT;
+    /* enable 100 MHz operation only if cpu frequency >= 50 MHz */
+    if (LEON3_Timer_Regs->scaler_reload >= 49) leon_open_eth_configuration.en100MHz = 1;
+    if (rtems_open_eth_driver_attach( config, &leon_open_eth_configuration )) {
+      LEON_Clear_interrupt(leon_open_eth_configuration.vector);
+      LEON_Unmask_interrupt(leon_open_eth_configuration.vector);
+    } 
+  }
+  return 0;
+}