SAME5x Ethernet Support

arch/arm/include/samd5e5/irq.h

@@ -76,7 +76,7 @@
 
 #define SAM_IRQ_EXTINT        (16) /* Vector number of the first external interrupt */
 
-#if defined(CONFIG_ARCH_CHIP_SAMD5X) || defined(ARCH_CHIP_SAME5X)
+#if defined(CONFIG_ARCH_CHIP_SAMD5X) || defined(CONFIG_ARCH_CHIP_SAME5X)
 #  include <arch/samd5e5/samd5e5_irq.h>
 #else
 #  error "Unsupported SAMD5/E5 family"

arch/arm/src/samd5e5/Kconfig

@@ -361,6 +361,13 @@ config SAMD5E5_DMAC
 	default n
 	select ARCH_DMA
 
+config SAMD5E5_GMAC
+	bool "Ethernet"
+	default n
+	depends on SAMD5E5_HAVE_ETHERNET
+	select NETDEVICES
+	select ARCH_HAVE_PHY
+
 config SAMD5E5_EVSYS
 	bool "Event System"
 	default n
@@ -710,3 +717,111 @@ config SAMD5E5_USB_REGDEBUG
 		CONFIG_DEBUG_USB_INFO.
 
 endmenu # USB options
+
+
+if SAMD5E5_GMAC
+
+menu "GMAC device driver options"
+
+config SAMD5E5_GMAC_NRXBUFFERS
+	int "Number of RX buffers"
+	default 16
+	---help---
+		GMAC buffer memory is segmented into 128 byte units (not
+		configurable).  This setting provides the number of such 128 byte
+		units used for reception.  This is also equal to the number of RX
+		descriptors that will be allocated  The selected value must be an
+		even power of 2.
+
+config SAMD5E5_GMAC_NTXBUFFERS
+	int "Number of TX buffers"
+	default 8
+	---help---
+		GMAC buffer memory is segmented into full Ethernet packets (size
+		NET_BUFSIZE bytes).  This setting provides the number of such packets
+		that can be in flight.  This is also equal to the number of TX
+		descriptors that will be allocated.
+
+config SAMD5E5_GMAC_PREALLOCATE
+	bool "Preallocate buffers"
+	default n
+	---help---
+		Buffer an descriptor many may either be allocated from the memory
+		pool or pre-allocated to lie in .bss.  This options selected pre-
+		allocated buffer memory.
+
+config SAMD5E5_GMAC_NBC
+	bool "Disable Broadcast"
+	default n
+	---help---
+		Select to disable receipt of broadcast packets.
+
+config SAMD5E5_GMAC_PHYADDR
+	int "PHY address"
+	default 1
+	---help---
+		The 5-bit address of the PHY on the board.  Default: 1
+
+config SAMD5E5_GMAC_PHYINIT
+	bool "Board-specific PHY Initialization"
+	default n
+	---help---
+		Some boards require specialized initialization of the PHY before it can be used.
+		This may include such things as configuring GPIOs, resetting the PHY, etc.  If
+		SAMD5E5_GMAC_PHYINIT is defined in the configuration then the board specific logic must
+		provide sam_phyinitialize();  The SAMD5E5 GMAC driver will call this function
+		one time before it first uses the PHY.
+
+config SAMD5E5_GMAC_AUTONEG
+	bool "Use autonegotiation"
+	default y
+	---help---
+		Use PHY autonegotiation to determine speed and mode
+
+if !SAMD5E5_GMAC_AUTONEG
+
+config SAMD5E5_GMAC_ETHFD
+	bool "Full duplex"
+	default n
+	---help---
+		If SAMD5E5_GMAC_AUTONEG is not defined, then this may be defined to
+		select full duplex mode. Default: half-duplex
+
+choice
+	prompt "GMAC Speed"
+	default SAMD5E5_GMAC_ETH100MBPS
+	---help---
+		If autonegotiation is not used, then you must select the fixed speed
+		of the PHY
+
+config SAMD5E5_GMAC_ETH10MBPS
+	bool "10 Mbps"
+	---help---
+		If SAMD5E5_GMAC_AUTONEG is not defined, then this may be defined to select 10 MBps
+		speed.  Default: 100 Mbps
+
+config SAMD5E5_GMAC_ETH100MBPS
+	bool "100 Mbps"
+	---help---
+		If SAMD5E5_GMAC_AUTONEG is not defined, then this may be defined to select 100 MBps
+		speed.  Default: 100 Mbps
+
+endchoice # GMAC speed
+endif # !SAMD5E5_GMAC_AUTONEG
+
+config SAMD5E5_GMAC_REGDEBUG
+	bool "Register-Level Debug"
+	default n
+	depends on DEBUG_NET_INFO
+	---help---
+		Enable very low-level register access debug.  Depends on CONFIG_DEBUG_NET_INFO.
+
+config SAMD5E5_GMAC_USE_MII
+	bool "Use MII interface for Ethernet"
+	default n
+	---help---
+		If selected, use MII interface to Ethernet PHY.  Otherwise, RMII will be used.
+
+endmenu # GMAC device driver options
+endif # SAMD5E5_GMAC
+

arch/arm/src/samd5e5/Make.defs

@@ -154,6 +154,7 @@ endif
 
 ifeq ($(CONFIG_SAMD5E5_GMAC),y)
 CHIP_CSRCS += sam_gmac.c
+CHIP_CSRCS += sam_ethernet.c
 endif
 
 ifeq ($(CONFIG_SAMD5E5_USB),y)

arch/arm/src/samd5e5/hardware/sam_memorymap.h

@@ -42,7 +42,7 @@
 
 #include <nuttx/config.h>
 
-#if defined(CONFIG_ARCH_CHIP_SAMD5X) || defined(ARCH_CHIP_SAME5X)
+#if defined(CONFIG_ARCH_CHIP_SAMD5X) || defined(CONFIG_ARCH_CHIP_SAME5X)
 #  include "hardware/samd5e5_memorymap.h"
 #else
 #  error "Unsupported SAMD5/E5 family"

arch/arm/src/samd5e5/hardware/sam_pinmap.h

@@ -42,7 +42,7 @@
 
 #include <nuttx/config.h>
 
-#if defined(CONFIG_ARCH_CHIP_SAMD5X) || defined(ARCH_CHIP_SAME5X)
+#if defined(CONFIG_ARCH_CHIP_SAMD5X) || defined(CONFIG_ARCH_CHIP_SAME5X)
 #  include "hardware/samd5e5_pinmap.h"
 #else
 #  error "Unsupported SAMD5/E5 family"

arch/arm/src/samd5e5/sam_ethernet.c

@@ -0,0 +1,125 @@
+/****************************************************************************
+ * arch/arm/src/samd5e5/sam_ethernet.c
+ *
+ *   Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <[email protected]>
+ *
+ * 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 NuttX 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+#include "sam_ethernet.h"
+
+#ifdef CONFIG_NET
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: up_gmac_initialize
+ *
+ * Description:
+ *   Initialize the GMAC driver
+ *
+ * Input Parameters:
+ *   None.
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SAMD5E5_GMAC
+static inline void up_gmac_initialize(void)
+{
+  int ret;
+
+  /* Initialize the GMAC driver */
+
+  ret = sam_gmac_initialize();
+  if (ret < 0)
+    {
+      nerr("ERROR: sam_gmac_initialize failed: %d\n", ret);
+    }
+}
+#else
+#  define up_gmac_initialize()
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: up_netinitialize
+ *
+ * Description:
+ *   This is the "standard" network initialization logic called from the
+ *   low-level initialization logic in up_initialize.c.
+ *
+ * Input Parameters:
+ *   None.
+ *
+ * Returned Value:
+ *   None.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+void up_netinitialize(void)
+{
+
+  up_gmac_initialize();
+}
+
+#endif /* CONFIG_NET */