SAMA5 Ethernet: Add support for PHY interrupts

configs/sama5d3x-ek/include/board.h

@@ -182,6 +182,19 @@ extern "C" {
 
 void sam_boardinitialize(void);
 
+/************************************************************************************
+ * Name: sam_phyirq
+ *
+ * Description:
+ *   This function may be called to register an interrupt handler that will be
+ *   called when an interrupt is received from a PHY.
+ *
+ ************************************************************************************/
+
+#if defined(CONFIG_NET) && (defined(CONFIG_SAMA5_EMAC) || defined(CONFIG_SAMA5_GMAC))
+xcpt_t sam_phyirq(int intf, xcpt_t irqhandler);
+#endif
+
 /************************************************************************************
  * Name:  sam_ledinit, sam_setled, and sam_setleds
  *

configs/sama5d3x-ek/src/Makefile

@@ -94,6 +94,14 @@ CSRCS += sam_usb.c
 endif
 endif
 
+ifeq ($(CONFIG_SAMA5_EMAC),y)
+CSRCS += sam_ethernet.c
+else
+ifeq ($(CONFIG_SAMA5_GMAC),y)
+CSRCS += sam_ethernet.c
+endif
+endif
+
 ifeq ($(CONFIG_NSH_ARCHINIT),y)
 CSRCS += sam_nsh.c
 endif

configs/sama5d3x-ek/src/sam_boot.c

@@ -44,7 +44,7 @@
 #include "sama5d3x-ek.h"
 
 /************************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ************************************************************************************/
 
 /************************************************************************************
@@ -103,6 +103,18 @@ void sam_boardinitialize(void)
     }
 #endif
 
+  /* Configure board resources to support networkingif the 1) networking is enabled,
+   * 2) the EMAC or GMAC module is enabled, and 2) the weak function
+   * sam_netinitialize() has been brought into the build.
+   */
+
+#ifdef HAVE_NETWORK
+  if (sam_netinitialize)
+    {
+      sam_netinitialize();
+    }
+#endif
+
 #ifdef CONFIG_ARCH_LEDS
   /* Configure on-board LEDs if LED support has been selected. */
 

configs/sama5d3x-ek/src/sam_ethernet.c

@@ -0,0 +1,170 @@
+/************************************************************************************
+ * configs/sama5d3x-ek/src/sam_ethernet.c
+ *
+ *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 <nuttx/irq.h>
+
+#include "sam_pio.h"
+#include "sam_ethernet.h"
+
+#ifdef HAVE_NETWORK
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: sam_netinitialize
+ *
+ * Description:
+ *   Configure board resources to support networking.
+ *
+ ************************************************************************************/
+
+void weak_function sam_netinitialize(void)
+{
+#ifdef CONFIG_SAMA4_EMAC
+  /* Ethernet 10/100 (EMAC) Port
+   *
+   * The main board contains a MICREL PHY device (KSZ8051) operating at 10/100 Mbps.
+   * The board supports MII and RMII interface modes.
+   *
+   * The two independent PHY devices embedded on CM and MB boards are connected to
+   * independent RJ-45 connectors with built-in magnetic and status LEDs.
+   *
+   * At the De-Assertion of Reset:
+   *   PHY ADD[2:0]:001
+   *   CONFIG[2:0]:001,Mode:RMII
+   *   Duplex Mode:Half Duplex
+   *   Isolate Mode:Disable
+   *   Speed Mode:100Mbps
+   *   Nway Auto-Negotiation:Enable
+   *
+   * The KSZ8051 PHY interrtup is available on PE30 INT_ETH1
+  */
+
+  sam_configpio(PIO_INT_ETH1);
+#endif
+
+#ifdef CONFIG_SAMA4_GMAC
+  /* Tri-Speed Ethernet PHY
+   *
+   * The SAMA5D3 series-CM board is equipped with a MICREL PHY devices (MICREL
+   * KSZ9021/31) operating at 10/100/1000 Mbps. The board supports RGMII interface
+   * mode. The Ethernet interface consists of 4 pairs of low voltage differential
+   * pair signals designated from GRX± and GTx± plus control signals for link
+   * activity indicators. These signals can be used to connect to a 10/100/1000
+   * BaseT RJ45 connector integrated on the main board.
+   *
+   * The KSZ9021/31 interrupt is available on PB35 INT_GETH0
+   */
+
+  sam_configpio(PIO_INT_ETH0);
+#endif
+}
+
+/************************************************************************************
+ * Name: sam_phyirq
+ *
+ * Description:
+ *   This function may be called to register an interrupt handler that will be
+ *   called when an interrupt is received from a PHY.
+ *
+ ************************************************************************************/
+
+xcpt_t sam_phyirq(int intf, xcpt_t irqhandler)
+{
+  irqstate_t flags;
+  xcpt_t *handler;
+  xcpt_t oldhandler;
+  int irq;
+
+#ifdef CONFIG_SAMA5_EMAC
+  if (intf == EMAC_INTF)
+    {
+      handler = &g_emac_handler;
+      irq     = IRQ_INT_ETH1;
+    }
+  else
+#endif
+#ifdef CONFIG_SAMA5_GMAC
+  if (intf == GMAC_INTF)
+    {
+      handler = &g_gmac_handler;
+      irq     = IRQ_INT_ETH0;
+    }
+  else
+#endif
+    {
+      ndbg("Unsupported interface: %d\n", intf);
+      return NULL;
+    }
+
+  /* Disable interrupts until we are done.  This guarantees that the
+   * following operations are atomic.
+   */
+
+  flags = irqsave();
+
+  /* Get the old button interrupt handler and save the new one */
+
+  oldhandler = *handler;
+  *handler = irqhandler;
+
+  /* Configure the interrupt */
+
+  sam_pioirq(irq);
+  (void)irq_attach(irq, irqhandler);
+  sam_pioirqenable(irq);
+
+  /* Return the old button handler (so that it can be restored) */
+
+  return oldhandler;
+}
+
+#endif /* HAVE_NETWORK */

configs/sama5d3x-ek/src/sama5d3x-ek.h

@@ -61,6 +61,7 @@
 #define HAVE_USBHOST    1
 #define HAVE_USBDEV     1
 #define HAVE_USBMONITOR 1
+#define HAVE_NETWORK    1
 
 /* HSMCI */
 /* Can't support MMC/SD if the card interface(s) are not enable */
@@ -251,6 +252,12 @@
 #  undef HAVE_USBMONITOR
 #endif
 
+/* Networking */
+
+#if !defined(CONFIG_NET) || (!defined(CONFIG_SAMA5_EMAC) && !defined(CONFIG_SAMA5_GMAC))
+#  undef HAVE_NETWORK
+#endif
+
 /* LEDs *****************************************************************************/
 /* There are two LEDs on the SAMA5D3 series-CM board that can be controlled
  * by software.  A  blue LED is controlled via PIO pins.  A red LED normally
@@ -410,6 +417,53 @@
 #define IRQ_USBBC_VBUS_OVERCURRENT \
                      SAM_IRQ_PD28
 
+/* Ethernet */
+
+#ifdef CONFIG_SAMA4_EMAC
+ /* ETH1: Ethernet 10/100 (EMAC) Port
+  *
+  * The main board contains a MICREL PHY device (KSZ8051) operating at 10/100 Mbps.
+  * The board supports MII and RMII interface modes.
+  *
+  * The two independent PHY devices embedded on CM and MB boards are connected to
+  * independent RJ-45 connectors with built-in magnetic and status LEDs.
+  *
+  * At the De-Assertion of Reset:
+  *   PHY ADD[2:0]:001
+  *   CONFIG[2:0]:001,Mode:RMII
+  *   Duplex Mode:Half Duplex
+  *   Isolate Mode:Disable
+  *   Speed Mode:100Mbps
+  *   Nway Auto-Negotiation:Enable
+  *
+  * The KSZ8051 PHY interrtup is available on PE30 INT_ETH1
+  */
+
+#define PIO_INT_ETH1 (PIO_INPUT | PIO_CFG_PULLUP | PIO_CFG_DEGLITCH | \
+                      PIO_INT_BOTHEDGES | PIO_PORT_PIOE | PIO_PIN30)
+#define IRQ_INT_ETH1 SAM_IRQ_PE30
+
+#endif
+
+#ifdef CONFIG_SAMA4_GMAC
+  /* ETH0: Tri-Speed Ethernet PHY
+   *
+   * The SAMA5D3 series-CM board is equipped with a MICREL PHY devices (MICREL
+   * KSZ9021/31) operating at 10/100/1000 Mbps. The board supports RGMII interface
+   * mode. The Ethernet interface consists of 4 pairs of low voltage differential
+   * pair signals designated from GRX± and GTx± plus control signals for link
+   * activity indicators. These signals can be used to connect to a 10/100/1000
+   * BaseT RJ45 connector integrated on the main board.
+   *
+   * The KSZ9021/31 interrupt is available on PB35 INT_GETH0
+   */
+
+#define PIO_INT_ETH0 (PIO_INPUT | PIO_CFG_PULLUP | PIO_CFG_DEGLITCH | \
+                      PIO_INT_BOTHEDGES | PIO_PORT_PIOB | PIO_PIN25)
+#define IRQ_INT_ETH0 SAM_IRQ_PB25
+
+#endif
+
 /* SPI Chip Selects *****************************************************************/
 /* Both the Ronetix and Embest versions of the SAMAD3x CPU modules include an
  * Atmel AT25DF321A, 32-megabit, 2.7-volt SPI serial flash.  The SPI
@@ -580,6 +634,18 @@ void weak_function sam_usbinitialize(void);
 int sam_usbhost_initialize(void);
 #endif
 
+/************************************************************************************
+ * Name: sam_netinitialize
+ *
+ * Description:
+ *   Configure board resources to support networking.
+ *
+ ************************************************************************************/
+
+#ifdef HAVE_NETWORK
+void weak_function sam_netinitialize(void);
+#endif
+
 /************************************************************************************
  * Name: up_ledinit
  ************************************************************************************/