mirror of https://github.com/ARMmbed/mbed-os.git
403 lines
11 KiB
C++
403 lines
11 KiB
C++
/*
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* Copyright (c) 2018 Nuvoton Technology Corp.
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* Copyright (c) 2018 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*
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* Description: NuMaker EMAC
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "cmsis_os.h"
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#include "mbed_interface.h"
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#include "mbed_assert.h"
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#include "netsocket/nsapi_types.h"
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#include "mbed_shared_queues.h"
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//#define NU_TRACE
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#include "numaker_emac_config.h"
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#include "numaker_emac.h"
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#include "numaker_eth_hal.h"
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/********************************************************************************
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*
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********************************************************************************/
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#define NU_BUFF_ALIGNMENT 4
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#define PHY_LINKED_STATE 1
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#define PHY_UNLINKED_STATE 0
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#define PACKET_BUFFER_SIZE ( NU_ETH_MAX_FLEN + ((NU_ETH_MAX_FLEN%4) ? (4 - (NU_ETH_MAX_FLEN%4)) : 0) ) //For DMA 4 bytes alignment
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extern "C" void numaker_eth_rx_next(void);
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/* \brief Flags for worker thread */
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#define FLAG_TX 1
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#define FLAG_RX 2
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/** \brief Driver thread priority */
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#define THREAD_PRIORITY (osPriorityNormal)
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#define PHY_TASK_PERIOD_MS 200
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NUMAKER_EMAC::NUMAKER_EMAC() : thread(0), hwaddr()
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{
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}
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static osThreadId_t create_new_thread(const char *threadName, void (*thread)(void *arg), void *arg, int stacksize, osPriority_t priority, mbed_rtos_storage_thread_t *thread_cb)
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{
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osThreadAttr_t attr = {0};
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attr.name = threadName;
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attr.stack_mem = malloc(stacksize);
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attr.cb_mem = thread_cb;
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attr.stack_size = stacksize;
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attr.cb_size = sizeof(mbed_rtos_storage_thread_t);
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attr.priority = priority;
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return osThreadNew(thread, arg, &attr);
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}
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/** \brief Ethernet receive interrupt handler
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*
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* This function handles the receive interrupt.
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*/
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void NUMAKER_EMAC::rx_isr()
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{
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if (thread) {
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osThreadFlagsSet(thread, FLAG_RX);
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}
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}
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void NUMAKER_EMAC::tx_isr()
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{
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/* No-op at this stage */
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}
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void NUMAKER_EMAC::ethernet_callback(char event, void *param)
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{
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NUMAKER_EMAC *enet = static_cast<NUMAKER_EMAC *>(param);
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switch (event)
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{
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case 'R': //For RX event
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enet->rx_isr();
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break;
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case 'T': //For TX event
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enet->tx_isr();
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break;
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default:
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break;
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}
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}
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/**
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* In this function, the hardware should be initialized.
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*/
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bool NUMAKER_EMAC::low_level_init_successful()
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{
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/* Init ETH */
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mbed_mac_address((char *)hwaddr);
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printf("mac address %02x-%02x-%02x-%02x-%02x-%02x \r\n", hwaddr[0], hwaddr[1],hwaddr[2],hwaddr[3],hwaddr[4],hwaddr[5]);
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/* Enable clock & set EMAC configuration */
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/* Enable MAC and DMA transmission and reception */
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numaker_eth_init(hwaddr);
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numaker_eth_set_cb(&NUMAKER_EMAC::ethernet_callback, this);
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return true;
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}
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int NUMAKER_EMAC::low_level_input(emac_mem_buf_t **buf)
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{
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uint16_t len = 0;
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uint8_t *buffer;
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uint32_t bufferoffset = 0;
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uint32_t byteslefttocopy = 0;
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emac_mem_buf_t *q;
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uint32_t payloadoffset = 0;
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/* get received frame */
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if ( numaker_eth_get_rx_buf(&len, &buffer) != 0) {
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return -1;
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}
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byteslefttocopy = len;
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if (len > 0) {
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/* Allocate a memory buffer chain from buffer pool */
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*buf = memory_manager->alloc_pool(len, 0);
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}
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NU_DEBUGF(("%s... length=%d, buf=0x%x\r\n", __FUNCTION__, len, *buf));
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if (*buf != NULL) {
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bufferoffset = 0;
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for (q = *buf; q != NULL; q = memory_manager->get_next(q)) {
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byteslefttocopy = memory_manager->get_len(q);
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payloadoffset = 0;
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NU_DEBUGF(("offset=[%d], bytes-to-copy[%d]\r\n",bufferoffset,byteslefttocopy));
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/* Copy data in pbuf */
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memcpy(static_cast<uint8_t *>(memory_manager->get_ptr(q)) + payloadoffset, static_cast<uint8_t *>(buffer) + bufferoffset, byteslefttocopy);
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bufferoffset = bufferoffset + byteslefttocopy;
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}
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}
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return 0;
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}
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/** \brief Worker thread.
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*
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* Woken by thread flags to receive packets or clean up transmit
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*
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* \param[in] pvParameters pointer to the interface data
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*/
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void NUMAKER_EMAC::thread_function(void* pvParameters)
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{
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static struct NUMAKER_EMAC *nu_enet = static_cast<NUMAKER_EMAC *>(pvParameters);
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for (;;) {
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uint32_t flags = osThreadFlagsWait(FLAG_RX, osFlagsWaitAny, osWaitForever);
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if (flags & FLAG_RX) {
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nu_enet->packet_rx();
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}
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}
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}
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/** \brief Packet reception task
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*
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* This task is called when a packet is received. It will
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* pass the packet to the LWIP core.
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*/
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void NUMAKER_EMAC::packet_rx()
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{
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/* move received packet into a new buf */
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while (1) {
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emac_mem_buf_t *p = NULL;
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if (low_level_input(&p) < 0) {
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break;
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}
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if (p) {
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NU_DEBUGF(("%s ... p=0x%x\r\n",__FUNCTION__,p));
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emac_link_input_cb(p);
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}
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numaker_eth_rx_next();
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}
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numaker_eth_trigger_rx();
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}
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/**
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* This function should do the actual transmission of the packet. The packet is
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* contained in the buf that is passed to the function. This buf
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* might be chained.
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*
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* @param buf the MAC packet to send (e.g. IP packet including MAC addresses and type)
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* @return true if the packet could be sent
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* false value if the packet couldn't be sent
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*
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* @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
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* strange results. You might consider waiting for space in the DMA queue
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* to become available since the stack doesn't retry to send a packet
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* dropped because of memory failure (except for the TCP timers).
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*/
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bool NUMAKER_EMAC::link_out(emac_mem_buf_t *buf)
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{
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bool result = false;
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emac_mem_buf_t *q;
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uint8_t *buffer = NULL;
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uint32_t framelength = 0;
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uint32_t bufferoffset = 0;
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uint32_t byteslefttocopy = 0;
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uint32_t payloadoffset = 0;
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/* Get exclusive access */
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TXLockMutex.lock();
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buffer = numaker_eth_get_tx_buf();
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NU_DEBUGF(("%s ... buffer=0x%x\r\n",__FUNCTION__, buffer));
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if( buffer == NULL ) goto error;
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/* copy frame from buf to driver buffers */
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for (q = buf; q != NULL; q = memory_manager->get_next(q)) {
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/* Get bytes in current lwIP buffer */
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byteslefttocopy = memory_manager->get_len(q);
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payloadoffset = 0;
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NU_DEBUGF(("offset=%d, bytes-to-copy=%d\r\n",bufferoffset, byteslefttocopy));
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/* Check if the length of data to copy is bigger than Tx buffer size*/
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while ((byteslefttocopy + bufferoffset) > PACKET_BUFFER_SIZE) {
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/* Copy data to Tx buffer*/
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memcpy(static_cast<uint8_t *>(buffer) + bufferoffset, static_cast<uint8_t *>(memory_manager->get_ptr(q)) + payloadoffset, (PACKET_BUFFER_SIZE - bufferoffset));
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/* Point to next descriptor */
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numaker_eth_trigger_tx(PACKET_BUFFER_SIZE, NULL);
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buffer = numaker_eth_get_tx_buf();
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if( buffer == NULL ) goto error;
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byteslefttocopy = byteslefttocopy - (PACKET_BUFFER_SIZE - bufferoffset);
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payloadoffset = payloadoffset + (PACKET_BUFFER_SIZE - bufferoffset);
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framelength = framelength + (PACKET_BUFFER_SIZE - bufferoffset);
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bufferoffset = 0;
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}
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/* Copy the remaining bytes */
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memcpy(static_cast<uint8_t *>(buffer) + bufferoffset, static_cast<uint8_t *>(memory_manager->get_ptr(q)) + payloadoffset, byteslefttocopy);
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bufferoffset = bufferoffset + byteslefttocopy;
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framelength = framelength + byteslefttocopy;
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}
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/* Prepare transmit descriptors to give to DMA */
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numaker_eth_trigger_tx(framelength, NULL);
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result = true;
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error:
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memory_manager->free(buf);
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/* Restore access */
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TXLockMutex.unlock();
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return result;
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}
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void NUMAKER_EMAC::phy_task()
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{
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// Get current status
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int state;
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state = numaker_eth_link_ok();
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if ((state & PHY_LINKED_STATE) && !(phy_state & PHY_LINKED_STATE)) {
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NU_DEBUGF(("Link Up\r\n"));
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if (emac_link_state_cb) emac_link_state_cb(true);
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} else if (!(state & PHY_LINKED_STATE) && (phy_state & PHY_LINKED_STATE)) {
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NU_DEBUGF(("Link Down\r\n"));
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if (emac_link_state_cb) emac_link_state_cb(false);
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}
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phy_state = state;
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}
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bool NUMAKER_EMAC::power_up()
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{
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/* Initialize the hardware */
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if (!low_level_init_successful())
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return false;
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/* Worker thread */
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thread = create_new_thread("numaker_emac_thread", &NUMAKER_EMAC::thread_function, this, THREAD_STACKSIZE, THREAD_PRIORITY, &thread_cb);
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/* PHY monitoring task */
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phy_state = PHY_UNLINKED_STATE;
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phy_task_handle = mbed::mbed_event_queue()->call_every(PHY_TASK_PERIOD_MS, mbed::callback(this, &NUMAKER_EMAC::phy_task));
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/* Allow the PHY task to detect the initial link state and set up the proper flags */
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osDelay(10);
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numaker_eth_enable_interrupts();
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return true;
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}
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uint32_t NUMAKER_EMAC::get_mtu_size() const
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{
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return NU_ETH_MTU_SIZE;
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}
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uint32_t NUMAKER_EMAC::get_align_preference() const
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{
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return NU_BUFF_ALIGNMENT;
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}
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void NUMAKER_EMAC::get_ifname(char *name, uint8_t size) const
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{
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memcpy(name, NU_ETH_IF_NAME, (size < sizeof(NU_ETH_IF_NAME)) ? size : sizeof(NU_ETH_IF_NAME));
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}
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uint8_t NUMAKER_EMAC::get_hwaddr_size() const
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{
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return NU_HWADDR_SIZE;
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}
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bool NUMAKER_EMAC::get_hwaddr(uint8_t *addr) const
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{
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mbed_mac_address((char *)addr);
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return true;
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}
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void NUMAKER_EMAC::set_hwaddr(const uint8_t *addr)
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{
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memcpy(hwaddr, addr, sizeof hwaddr);
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numaker_set_mac_addr(const_cast<uint8_t*>(addr));
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}
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void NUMAKER_EMAC::set_link_input_cb(emac_link_input_cb_t input_cb)
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{
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emac_link_input_cb = input_cb;
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}
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void NUMAKER_EMAC::set_link_state_cb(emac_link_state_change_cb_t state_cb)
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{
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emac_link_state_cb = state_cb;
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}
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void NUMAKER_EMAC::add_multicast_group(const uint8_t *addr)
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{
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/* No-op at this stage */
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}
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void NUMAKER_EMAC::remove_multicast_group(const uint8_t *addr)
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{
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/* No-op at this stage */
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}
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void NUMAKER_EMAC::set_all_multicast(bool all)
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{
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/* No-op at this stage */
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}
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void NUMAKER_EMAC::power_down()
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{
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/* No-op at this stage */
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}
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void NUMAKER_EMAC::set_memory_manager(EMACMemoryManager &mem_mngr)
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{
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memory_manager = &mem_mngr;
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}
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NUMAKER_EMAC &NUMAKER_EMAC::get_instance() {
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static NUMAKER_EMAC emac;
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return emac;
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}
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// Weak so a module can override
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MBED_WEAK EMAC &EMAC::get_default_instance() {
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return NUMAKER_EMAC::get_instance();
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}
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