5aeb15469a
The `xxx_ipv6multicast` function in each driver is not adapted to multiple IPv6 addresses yet, and they're redundant, so try to take them into common code. Change: 1. Add MAC `g_ipv6_ethallnodes` and `g_ipv6_ethallrouters` in `icmpv6_devinit` and call them in `netdev_register` 2. Add multicast MAC for Neighbor Solicitation when adding any IPv6 address, and remove them when IPv6 address is removed 3. Select `NET_MCASTGROUP` when `NET_ICMPv6` because now we need `d_addmac` when we have ICMPv6 Note: We want modules outside net stack to call functions like `netdev_ipv6_add` and never touch the related MAC address, so these MAC functions are added as internal functions to `net/netdev/netdev.h` Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
966 lines
27 KiB
C
966 lines
27 KiB
C
/****************************************************************************
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* arch/misoc/src/common/misoc_net.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#if defined(CONFIG_NET) && defined(CONFIG_MISOC_ETHERNET)
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#include <stdint.h>
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#include <stdbool.h>
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#include <time.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <arpa/inet.h>
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#include <nuttx/arch.h>
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#include <nuttx/irq.h>
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#include <nuttx/wdog.h>
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#include <nuttx/wqueue.h>
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#include <nuttx/net/ip.h>
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#include <nuttx/net/netdev.h>
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#include <arch/board/board.h>
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#include <arch/board/generated/csr.h>
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#include "chip.h"
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#include "hw/flags.h"
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#include "hw/ethmac_mem.h"
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#include "misoc.h"
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#ifdef CONFIG_NET_PKT
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# include <nuttx/net/pkt.h>
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* If processing is not done at the interrupt level, then high priority
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* work queue support is required.
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*/
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#if !defined(CONFIG_SCHED_HPWORK)
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/* REVISIT: The low priority work queue would be preferred if available */
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# error High priority work queue support is required
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#endif
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/* CONFIG_MISOC_NET_NINTERFACES determines the number of physical interfaces
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* that will be supported.
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*/
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#ifndef CONFIG_MISOC_NET_NINTERFACES
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# define CONFIG_MISOC_NET_NINTERFACES 1
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#endif
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/* TX timeout = 1 minute */
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#define MISOC_NET_TXTIMEOUT (60*CLK_TCK)
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/* This is a helper pointer for accessing the contents of Ethernet header */
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#define BUF ((struct eth_hdr_s *)priv->misoc_net_dev.d_buf)
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* The misoc_net_driver_s encapsulates all state information for a single
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* hardware interface
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*/
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struct misoc_net_driver_s
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{
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bool misoc_net_bifup; /* true:ifup false:ifdown */
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struct wdog_s misoc_net_txtimeout; /* TX timeout timer */
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struct work_s misoc_net_irqwork; /* For deferring interrupt work to the work queue */
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struct work_s misoc_net_pollwork; /* For deferring poll work to the work queue */
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uint8_t *rx0_buf; /* 2 RX and 2 TX buffer */
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uint8_t *rx1_buf;
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uint8_t *tx0_buf;
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uint8_t *tx1_buf;
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uint8_t *tx_buf;
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uint8_t tx_slot; /* The slot from which we send packet (tx0/tx1) */
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/* This holds the information visible to the NuttX network */
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struct net_driver_s misoc_net_dev; /* Interface understood by the network */
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* A single packet buffer is used */
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static uint8_t g_pktbuf[CONFIG_MISOC_NET_NINTERFACES]
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[MAX_NETDEV_PKTSIZE + CONFIG_NET_GUARDSIZE];
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/* Driver state structure */
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static struct misoc_net_driver_s g_misoc_net[CONFIG_MISOC_NET_NINTERFACES];
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* Common TX logic */
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static int misoc_net_transmit(struct misoc_net_driver_s *priv);
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static int misoc_net_txpoll(struct net_driver_s *dev);
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/* Interrupt handling */
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static void misoc_net_receive(struct misoc_net_driver_s *priv);
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static void misoc_net_txdone(struct misoc_net_driver_s *priv);
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static void misoc_net_interrupt_work(void *arg);
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static int misoc_net_interrupt(int irq, void *context, void *arg);
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/* Watchdog timer expirations */
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static void misoc_net_txtimeout_work(void *arg);
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static void misoc_net_txtimeout_expiry(wdparm_t arg);
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/* NuttX callback functions */
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static int misoc_net_ifup(struct net_driver_s *dev);
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static int misoc_net_ifdown(struct net_driver_s *dev);
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static void misoc_net_txavail_work(void *arg);
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static int misoc_net_txavail(struct net_driver_s *dev);
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#if defined(CONFIG_NET_MCASTGROUP) || defined(CONFIG_NET_ICMPv6)
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static int misoc_net_addmac(struct net_driver_s *dev,
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const uint8_t *mac);
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#ifdef CONFIG_NET_MCASTGROUP
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static int misoc_net_rmmac(struct net_driver_s *dev,
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const uint8_t *mac);
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#endif
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Function: misoc_net_transmit
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*
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* Description:
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* Start hardware transmission. Called either from the txdone interrupt
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* handling or from watchdog based polling.
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*
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* Input Parameters:
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* priv - Reference to the driver state structure
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*
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* Returned Value:
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* OK on success; a negated errno on failure
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*
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* Assumptions:
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* May or may not be called from an interrupt handler. In either case,
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* the network is locked.
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*
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****************************************************************************/
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static int misoc_net_transmit(struct misoc_net_driver_s *priv)
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{
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/* Verify that the hardware is ready to send another packet. If we get
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* here, then we are committed to sending a packet; Higher level logic
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* must have assured that there is no transmission in progress.
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*/
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/* Increment statistics */
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NETDEV_TXPACKETS(priv->misoc_net_dev);
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/* Send the packet: address=priv->misoc_net_dev.d_buf,
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* length=priv->misoc_net_dev.d_len
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*
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* NOTE: This memcpy could be avoided by setting tx_buf
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* to the d_buf pointer and setting d_buf to an alternate
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* buffer. Some additional buffer management logic would
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* be required.
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*/
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memcpy(priv->tx_buf, priv->misoc_net_dev.d_buf,
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priv->misoc_net_dev.d_len);
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/* Choose the slot on which we write */
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ethmac_sram_reader_slot_write(priv->tx_slot);
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/* Write the len */
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if (priv->misoc_net_dev.d_len < 60)
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{
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ethmac_sram_reader_length_write(60);
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}
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else
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{
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ethmac_sram_reader_length_write(priv->misoc_net_dev.d_len);
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}
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/* Trigger the writing */
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ethmac_sram_reader_start_write(1);
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/* switch tx slot */
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priv->tx_slot = (priv->tx_slot + 1) % 2;
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if (priv->tx_slot)
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{
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priv->tx_buf = priv->tx1_buf;
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}
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else
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{
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priv->tx_buf = priv->tx0_buf;
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}
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/* Enable Tx interrupts */
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ethmac_sram_reader_ev_enable_write(1);
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/* Setup the TX timeout watchdog (perhaps restarting the timer) */
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wd_start(&priv->misoc_net_txtimeout, MISOC_NET_TXTIMEOUT,
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misoc_net_txtimeout_expiry, (wdparm_t)priv);
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return OK;
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}
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/****************************************************************************
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* Function: misoc_net_txpoll
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*
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* Description:
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* The transmitter is available, check if the network has any outgoing
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* packets ready to send. This is a callback from devif_poll().
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* devif_poll() may be called:
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*
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* 1. When the preceding TX packet send is complete,
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* 2. When the preceding TX packet send timesout and the interface is reset
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* 3. During normal TX polling
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*
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* Input Parameters:
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* dev - Reference to the NuttX driver state structure
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*
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* Returned Value:
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* OK on success; a negated errno on failure
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*
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* Assumptions:
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* May or may not be called from an interrupt handler. In either case,
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* the network is locked.
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*
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****************************************************************************/
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static int misoc_net_txpoll(struct net_driver_s *dev)
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{
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struct misoc_net_driver_s *priv =
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(struct misoc_net_driver_s *)dev->d_private;
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/* Send the packet */
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misoc_net_transmit(priv);
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/* If zero is returned, the polling will continue until all connections
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* have been examined.
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*/
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return 0;
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}
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/****************************************************************************
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* Function: misoc_net_receive
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*
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* Description:
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* An interrupt was received indicating the availability of a new RX packet
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*
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* Input Parameters:
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* priv - Reference to the driver state structure
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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* The network is locked.
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*
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****************************************************************************/
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static void misoc_net_receive(struct misoc_net_driver_s *priv)
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{
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uint8_t rxslot;
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uint32_t rxlen;
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do
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{
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/* Check for errors and update statistics */
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/* Check if the packet is a valid size for the network buffer
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* configuration.
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*/
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/* Find rx slot */
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rxslot = ethmac_sram_writer_slot_read();
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/* Get rx len */
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rxlen = ethmac_sram_writer_length_read();
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/* Copy the data data from the hardware to priv->misoc_net_dev.d_buf.
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* Set amount of data in priv->misoc_net_dev.d_len
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*
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* NOTE: These memcpy's could be avoided by simply setting the d_buf
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* pointer to the rx*_buf containing the received data. Some additional
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* buffer management logic would also be required.
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*/
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misoc_flush_dcache();
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if (rxslot)
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{
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memcpy(priv->misoc_net_dev.d_buf, priv->rx1_buf, rxlen);
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}
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else
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{
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memcpy(priv->misoc_net_dev.d_buf, priv->rx0_buf, rxlen);
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}
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/* Clear event pending */
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ethmac_sram_writer_ev_pending_write(1);
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priv->misoc_net_dev.d_len = rxlen;
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#ifdef CONFIG_NET_PKT
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/* When packet sockets are enabled, feed the frame into the tap */
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pkt_input(&priv->misoc_net_dev);
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#endif
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/* We only accept IP packets of the configured type and ARP packets */
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#ifdef CONFIG_NET_IPv4
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if (BUF->type == HTONS(ETHTYPE_IP))
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{
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ninfo("IPv4 frame\n");
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NETDEV_RXIPV4(&priv->misoc_net_dev);
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/* Receive an IPv4 packet from the network device */
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ipv4_input(&priv->misoc_net_dev);
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/* If the above function invocation resulted in data that should be
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* sent out on the network, d_len field will set to a value > 0.
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*/
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if (priv->misoc_net_dev.d_len > 0)
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{
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/* And send the packet */
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misoc_net_transmit(priv);
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}
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}
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else
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#endif
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#ifdef CONFIG_NET_IPv6
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if (BUF->type == HTONS(ETHTYPE_IP6))
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{
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ninfo("IPv6 frame\n");
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NETDEV_RXIPV6(&priv->misoc_net_dev);
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/* Give the IPv6 packet to the network layer */
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ipv6_input(&priv->misoc_net_dev);
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/* If the above function invocation resulted in data that should be
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* sent out on the network, d_len field will set to a value > 0.
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*/
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if (priv->misoc_net_dev.d_len > 0)
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{
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/* And send the packet */
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misoc_net_transmit(priv);
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}
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}
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else
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#endif
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#ifdef CONFIG_NET_ARP
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if (BUF->type == HTONS(ETHTYPE_ARP))
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{
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arp_input(&priv->misoc_net_dev);
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NETDEV_RXARP(&priv->misoc_net_dev);
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/* If the above function invocation resulted in data that should be
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* sent out on the network, d_len field will set to a value > 0.
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*/
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if (priv->misoc_net_dev.d_len > 0)
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{
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misoc_net_transmit(priv);
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}
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}
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#endif
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else
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{
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NETDEV_RXDROPPED(&priv->misoc_net_dev);
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}
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}
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while (ethmac_sram_writer_ev_pending_read() & ETHMAC_EV_SRAM_WRITER);
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}
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/****************************************************************************
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* Function: misoc_net_txdone
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*
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* Description:
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* An interrupt was received indicating that the last TX packet(s) is done
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*
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* Input Parameters:
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* priv - Reference to the driver state structure
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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* The network is locked.
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*
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****************************************************************************/
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static void misoc_net_txdone(struct misoc_net_driver_s *priv)
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{
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/* Check for errors and update statistics */
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NETDEV_TXDONE(priv->misoc_net_dev);
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/* Check if there are pending transmissions */
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/* If no further transmissions are pending, then cancel the TX timeout and
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* disable further Tx interrupts.
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*/
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wd_cancel(&priv->misoc_net_txtimeout);
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/* And disable further TX interrupts. */
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ethmac_sram_reader_ev_enable_write(0);
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/* In any event, poll the network for new TX data */
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devif_poll(&priv->misoc_net_dev, misoc_net_txpoll);
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}
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/****************************************************************************
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* Function: misoc_net_interrupt_work
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*
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* Description:
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* Perform interrupt related work from the worker thread
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*
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* Input Parameters:
|
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* arg - The argument passed when work_queue() was called.
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*
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* Returned Value:
|
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* OK on success
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*
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* Assumptions:
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* The network is locked.
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*
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****************************************************************************/
|
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static void misoc_net_interrupt_work(void *arg)
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{
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struct misoc_net_driver_s *priv = (struct misoc_net_driver_s *)arg;
|
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/* Process pending Ethernet interrupts */
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net_lock();
|
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|
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/* Check if we received an incoming packet,
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* if so, call misoc_net_receive()
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*/
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if (ethmac_sram_writer_ev_pending_read() & ETHMAC_EV_SRAM_WRITER)
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{
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misoc_net_receive(priv);
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}
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/* Check if a packet transmission just completed. If so, call
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* misoc_net_txdone. This may disable further Tx interrupts if there are no
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* pending transmissions.
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*/
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if (ethmac_sram_reader_ev_pending_read() & ETHMAC_EV_SRAM_READER)
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{
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misoc_net_txdone(priv);
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ethmac_sram_reader_ev_pending_write(1);
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}
|
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net_unlock();
|
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ethmac_sram_reader_ev_enable_write(1);
|
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ethmac_sram_writer_ev_enable_write(1);
|
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|
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/* Re-enable Ethernet interrupts */
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up_enable_irq(ETHMAC_INTERRUPT);
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}
|
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|
|
/****************************************************************************
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|
* Function: misoc_net_interrupt
|
|
*
|
|
* Description:
|
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* Hardware interrupt handler
|
|
*
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|
* Input Parameters:
|
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* irq - Number of the IRQ that generated the interrupt
|
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* context - Interrupt register state save info (architecture-specific)
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*
|
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* Returned Value:
|
|
* OK on success
|
|
*
|
|
* Assumptions:
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*
|
|
****************************************************************************/
|
|
|
|
static int misoc_net_interrupt(int irq, void *context, void *arg)
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{
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struct misoc_net_driver_s *priv = &g_misoc_net[0];
|
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|
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/* Disable further Ethernet interrupts. Because Ethernet interrupts are
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* also disabled if the TX timeout event occurs, there can be no race
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* condition here.
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*/
|
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|
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ethmac_sram_reader_ev_enable_write(0);
|
|
ethmac_sram_writer_ev_enable_write(0);
|
|
|
|
/* TODO: Determine if a TX transfer just completed */
|
|
|
|
if (ethmac_sram_reader_ev_pending_read() & ETHMAC_EV_SRAM_READER)
|
|
{
|
|
/* If a TX transfer just completed, then cancel the TX timeout so
|
|
* there will be do race condition between any subsequent timeout
|
|
* expiration and the deferred interrupt processing.
|
|
*/
|
|
|
|
wd_cancel(&priv->misoc_net_txtimeout);
|
|
}
|
|
|
|
/* Schedule to perform the interrupt processing on the worker thread. */
|
|
|
|
work_queue(HPWORK, &priv->misoc_net_irqwork,
|
|
misoc_net_interrupt_work, priv, 0);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_txtimeout_work
|
|
*
|
|
* Description:
|
|
* Perform TX timeout related work from the worker thread
|
|
*
|
|
* Input Parameters:
|
|
* arg - The argument passed when work_queue() as called.
|
|
*
|
|
* Returned Value:
|
|
* OK on success
|
|
*
|
|
* Assumptions:
|
|
* The network is locked.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static void misoc_net_txtimeout_work(void *arg)
|
|
{
|
|
struct misoc_net_driver_s *priv = (struct misoc_net_driver_s *)arg;
|
|
|
|
/* Increment statistics and dump debug info */
|
|
|
|
net_lock();
|
|
NETDEV_TXTIMEOUTS(priv->misoc_net_dev);
|
|
|
|
/* Then reset the hardware */
|
|
|
|
/* Then poll the network for new XMIT data */
|
|
|
|
devif_poll(&priv->misoc_net_dev, misoc_net_txpoll);
|
|
net_unlock();
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_txtimeout_expiry
|
|
*
|
|
* Description:
|
|
* Our TX watchdog timed out. Called from the timer interrupt handler.
|
|
* The last TX never completed. Reset the hardware and start again.
|
|
*
|
|
* Input Parameters:
|
|
* arg - The argument
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
* Assumptions:
|
|
* Global interrupts are disabled by the watchdog logic.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static void misoc_net_txtimeout_expiry(wdparm_t arg)
|
|
{
|
|
struct misoc_net_driver_s *priv = (struct misoc_net_driver_s *)arg;
|
|
|
|
#if 0 /* REVISIT */
|
|
/* Disable further Ethernet interrupts. This will prevent some race
|
|
* conditions with interrupt work. There is still a potential race
|
|
* condition with interrupt work that is already queued and in progress.
|
|
*/
|
|
|
|
up_disable_irq(ETHMAC_INTERRUPT);
|
|
#endif
|
|
|
|
/* Schedule to perform the TX timeout processing on the worker thread. */
|
|
|
|
work_queue(HPWORK, &priv->misoc_net_irqwork,
|
|
misoc_net_txtimeout_work, priv, 0);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_ifup
|
|
*
|
|
* Description:
|
|
* NuttX Callback: Bring up the Ethernet interface when an IP address is
|
|
* provided
|
|
*
|
|
* Input Parameters:
|
|
* dev - Reference to the NuttX driver state structure
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
* Assumptions:
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int misoc_net_ifup(struct net_driver_s *dev)
|
|
{
|
|
irqstate_t flags;
|
|
struct misoc_net_driver_s *priv =
|
|
(struct misoc_net_driver_s *)dev->d_private;
|
|
|
|
#ifdef CONFIG_NET_IPv4
|
|
ninfo("Bringing up: %u.%u.%u.%u\n",
|
|
ip4_addr1(dev->d_ipaddr), ip4_addr2(dev->d_ipaddr),
|
|
ip4_addr3(dev->d_ipaddr), ip4_addr4(dev->d_ipaddr));
|
|
#endif
|
|
#ifdef CONFIG_NET_IPv6
|
|
ninfo("Bringing up: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
|
dev->d_ipv6addr[0], dev->d_ipv6addr[1], dev->d_ipv6addr[2],
|
|
dev->d_ipv6addr[3], dev->d_ipv6addr[4], dev->d_ipv6addr[5],
|
|
dev->d_ipv6addr[6], dev->d_ipv6addr[7]);
|
|
#endif
|
|
|
|
/* Initialize PHYs, Ethernet interface, and setup up Ethernet interrupts */
|
|
|
|
flags = enter_critical_section();
|
|
|
|
priv->misoc_net_bifup = true;
|
|
up_enable_irq(ETHMAC_INTERRUPT);
|
|
|
|
/* Enable the RX Event Handler */
|
|
|
|
ethmac_sram_writer_ev_enable_write(1);
|
|
leave_critical_section(flags);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_ifdown
|
|
*
|
|
* Description:
|
|
* NuttX Callback: Stop the interface.
|
|
*
|
|
* Input Parameters:
|
|
* dev - Reference to the NuttX driver state structure
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
* Assumptions:
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int misoc_net_ifdown(struct net_driver_s *dev)
|
|
{
|
|
struct misoc_net_driver_s *priv =
|
|
(struct misoc_net_driver_s *)dev->d_private;
|
|
irqstate_t flags;
|
|
|
|
/* Disable the Ethernet interrupt */
|
|
|
|
flags = enter_critical_section();
|
|
up_disable_irq(ETHMAC_INTERRUPT);
|
|
|
|
ethmac_sram_reader_ev_enable_write(0);
|
|
ethmac_sram_writer_ev_enable_write(0);
|
|
|
|
/* Cancel the TX timeout timers */
|
|
|
|
wd_cancel(&priv->misoc_net_txtimeout);
|
|
|
|
/* Put the EMAC in its reset, non-operational state. This should be
|
|
* a known configuration that will guarantee the misoc_net_ifup() always
|
|
* successfully brings the interface back up.
|
|
*/
|
|
|
|
/* Mark the device "down" */
|
|
|
|
priv->misoc_net_bifup = false;
|
|
leave_critical_section(flags);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_txavail_work
|
|
*
|
|
* Description:
|
|
* Perform an out-of-cycle poll on the worker thread.
|
|
*
|
|
* Input Parameters:
|
|
* arg - Reference to the NuttX driver state structure (cast to void*)
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
* Assumptions:
|
|
* Called on the higher priority worker thread.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static void misoc_net_txavail_work(void *arg)
|
|
{
|
|
struct misoc_net_driver_s *priv =
|
|
(struct misoc_net_driver_s *)arg;
|
|
|
|
/* Ignore the notification if the interface is not yet up */
|
|
|
|
net_lock();
|
|
if (priv->misoc_net_bifup)
|
|
{
|
|
/* Check if there is room in the hardware to hold another packet. */
|
|
|
|
if (!ethmac_sram_reader_ready_read())
|
|
{
|
|
/* If so, then poll the network for new XMIT data */
|
|
|
|
devif_poll(&priv->misoc_net_dev, misoc_net_txpoll);
|
|
}
|
|
}
|
|
|
|
net_unlock();
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_txavail
|
|
*
|
|
* Description:
|
|
* Driver callback invoked when new TX data is available. This is a
|
|
* stimulus perform an out-of-cycle poll and, thereby, reduce the TX
|
|
* latency.
|
|
*
|
|
* Input Parameters:
|
|
* dev - Reference to the NuttX driver state structure
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
* Assumptions:
|
|
* Called in normal user mode
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int misoc_net_txavail(struct net_driver_s *dev)
|
|
{
|
|
struct misoc_net_driver_s *priv =
|
|
(struct misoc_net_driver_s *)dev->d_private;
|
|
|
|
/* Is our single work structure available? It may not be if there are
|
|
* pending interrupt actions and we will have to ignore the Tx
|
|
* availability action.
|
|
*/
|
|
|
|
if (work_available(&priv->misoc_net_pollwork))
|
|
{
|
|
/* Schedule to serialize the poll on the worker thread. */
|
|
|
|
work_queue(HPWORK, &priv->misoc_net_pollwork,
|
|
misoc_net_txavail_work, priv, 0);
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_addmac
|
|
*
|
|
* Description:
|
|
* NuttX Callback: Add the specified MAC address to the hardware multicast
|
|
* address filtering
|
|
*
|
|
* Input Parameters:
|
|
* dev - Reference to the NuttX driver state structure
|
|
* mac - The MAC address to be added
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
* Assumptions:
|
|
*
|
|
****************************************************************************/
|
|
|
|
#if defined(CONFIG_NET_MCASTGROUP) || defined(CONFIG_NET_ICMPv6)
|
|
static int misoc_net_addmac(struct net_driver_s *dev,
|
|
const uint8_t *mac)
|
|
{
|
|
struct misoc_net_driver_s *priv =
|
|
(struct misoc_net_driver_s *)dev->d_private;
|
|
|
|
/* Add the MAC address to the hardware multicast routing table */
|
|
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_rmmac
|
|
*
|
|
* Description:
|
|
* NuttX Callback: Remove the specified MAC address from the hardware
|
|
* multicast address filtering
|
|
*
|
|
* Input Parameters:
|
|
* dev - Reference to the NuttX driver state structure
|
|
* mac - The MAC address to be removed
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
* Assumptions:
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_MCASTGROUP
|
|
static int misoc_net_rmmac(struct net_driver_s *dev,
|
|
const uint8_t *mac)
|
|
{
|
|
struct misoc_net_driver_s *priv =
|
|
(struct misoc_net_driver_s *)dev->d_private;
|
|
|
|
/* Add the MAC address to the hardware multicast routing table */
|
|
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: misoc_net_initialize
|
|
*
|
|
* Description:
|
|
* Initialize the Ethernet controller and driver
|
|
*
|
|
* Input Parameters:
|
|
* intf - In the case where there are multiple EMACs, this value
|
|
* identifies which EMAC is to be initialized.
|
|
*
|
|
* Returned Value:
|
|
* OK on success; Negated errno on failure.
|
|
*
|
|
* Assumptions:
|
|
*
|
|
****************************************************************************/
|
|
|
|
int misoc_net_initialize(int intf)
|
|
{
|
|
struct misoc_net_driver_s *priv;
|
|
|
|
/* Get the interface structure associated with this interface number. */
|
|
|
|
DEBUGASSERT(intf < CONFIG_MISOC_NET_NINTERFACES);
|
|
priv = &g_misoc_net[intf];
|
|
|
|
/* Check if a Ethernet chip is recognized at its I/O base */
|
|
|
|
/* Attach the IRQ to the driver */
|
|
|
|
if (irq_attach(ETHMAC_INTERRUPT, misoc_net_interrupt, NULL))
|
|
{
|
|
/* We could not attach the ISR to the interrupt */
|
|
|
|
return -EAGAIN;
|
|
}
|
|
|
|
/* Clear pending int */
|
|
|
|
ethmac_sram_reader_ev_pending_write(ETHMAC_EV_SRAM_READER);
|
|
ethmac_sram_writer_ev_pending_write(ETHMAC_EV_SRAM_WRITER);
|
|
|
|
/* Initialize the driver structure */
|
|
|
|
memset(priv, 0, sizeof(struct misoc_net_driver_s));
|
|
priv->rx0_buf = (uint8_t *)ETHMAC_RX0_BASE;
|
|
priv->rx1_buf = (uint8_t *)ETHMAC_RX1_BASE;
|
|
priv->tx0_buf = (uint8_t *)ETHMAC_TX0_BASE;
|
|
priv->tx1_buf = (uint8_t *)ETHMAC_TX1_BASE;
|
|
priv->tx_buf = priv->tx0_buf;
|
|
priv->tx_slot = 0;
|
|
|
|
priv->misoc_net_dev.d_buf = g_pktbuf[intf]; /* Single packet buffer */
|
|
priv->misoc_net_dev.d_ifup = misoc_net_ifup; /* I/F up (new IP address) callback */
|
|
priv->misoc_net_dev.d_ifdown = misoc_net_ifdown; /* I/F down callback */
|
|
priv->misoc_net_dev.d_txavail = misoc_net_txavail; /* New TX data callback */
|
|
#ifdef CONFIG_NET_MCASTGROUP
|
|
priv->misoc_net_dev.d_addmac = misoc_net_addmac; /* Add multicast MAC address */
|
|
priv->misoc_net_dev.d_rmmac = misoc_net_rmmac; /* Remove multicast MAC address */
|
|
#endif
|
|
priv->misoc_net_dev.d_private = g_misoc_net; /* Used to recover private state from dev */
|
|
|
|
/* Put the interface in the down state. This usually amounts to resetting
|
|
* the device and/or calling misoc_net_ifdown().
|
|
*/
|
|
|
|
/* Read the MAC address from the hardware into
|
|
* priv->misoc_net_dev.d_mac.ether.ether_addr_octet
|
|
*/
|
|
|
|
/* Register the device with the OS so that socket IOCTLs can be performed */
|
|
|
|
netdev_register(&priv->misoc_net_dev, NET_LL_ETHERNET);
|
|
return OK;
|
|
}
|
|
|
|
#endif /* CONFIG_NET && CONFIG_MISOC_NET_ETHERNET */
|