/************************************************************************************
* 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
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Private Data
************************************************************************************/
#ifdef CONFIG_SAMA5_PIOE_IRQ
#ifdef CONFIG_SAMA5_EMACA
static xcpt g_emac_handler;
#endif
#ifdef CONFIG_SAMA5_GMAC
static xcpt g_gmac_handler;
#endif
#endif
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: sam_netinitialize
*
* Description:
* Configure board resources to support networking.
*
************************************************************************************/
void weak_function sam_netinitialize(void)
{
#ifdef CONFIG_SAMA4_EMACA
/* Ethernet 10/100 (EMAC A) 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.
*
************************************************************************************/
#ifdef CONFIG_SAMA5_PIOE_IRQ
xcpt_t sam_phyirq(int intf, xcpt_t irqhandler)
{
irqstate_t flags;
xcpt_t *handler;
xcpt_t oldhandler;
int irq;
#ifdef CONFIG_SAMA5_EMACA
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) */
irqrestore(flags);
return oldhandler;
}
#endif /* CONFIG_SAMA5_PIOE_IRQ */
#endif /* HAVE_NETWORK */
