/** \brief Sets up the RX descriptor ring buffers.
*
* This function sets up the descriptor list used for receive packets.
*
* \param[in] netif Pointer to driver data structure
* \returns true/false
*/
static NyLPC_TBool k64f_rx_setup(enet_rxbd_config_t *rxbdCfg)
{
// struct k64f_enetdata *k64f_enet = &(netif->state);
enet_dev_if_t *enetIfPtr = (enet_dev_if_t *)&enetDevIf[BOARD_DEBUG_ENET_INSTANCE];
uint32_t rxBufferSizeAligned;
int i;
// Allocate RX descriptors
if(RX_DESC_BUF_BASE!=NULL){
free(RX_DESC_BUF_BASE);
RX_DESC_BUF_BASE=NULL;
}
RX_DESC_BUF_BASE = (void*)calloc(1, enet_hal_get_bd_size() * enetIfPtr->macCfgPtr->rxBdNumber + ENET_BD_ALIGNMENT);
if(RX_DESC_BUF_BASE==NULL){
return NyLPC_TBool_FALSE;
}
//16byteアライメントに修正
_driver.rx_desc_start_addr = (uint8_t *)ENET_ALIGN((NyLPC_TUInt32)RX_DESC_BUF_BASE, ENET_BD_ALIGNMENT);
rxBufferSizeAligned = ENET_ALIGN(enetIfPtr->macCfgPtr->rxBufferSize, ENET_RX_BUFFER_ALIGNMENT);
enetIfPtr->macContextPtr->rxBufferSizeAligned = rxBufferSizeAligned;
rxbdCfg->rxBdPtrAlign = _driver.rx_desc_start_addr;
rxbdCfg->rxBdNum = enetIfPtr->macCfgPtr->rxBdNumber;
rxbdCfg->rxBufferNum = enetIfPtr->macCfgPtr->rxBdNumber;
//初期化
enet_hal_active_rxbd(BOARD_DEBUG_ENET_INSTANCE);
for(i=0;i<NUM_OF_RX_RING;i++){
setRxDesc(RX_BUF+(i*SIZE_OF_ETH_PACKET),i);
}
// k64f_rx_queue(netif, RX_PBUF_AUTO_INDEX);
return NyLPC_TBool_TRUE;
}
/** \brief Sets up the TX descriptor ring buffers.
*
* This function sets up the descriptor list used for transmit packets.
*
* \param[in] netif Pointer to driver data structure
* \returns true/false
*/
static NyLPC_TBool k64f_tx_setup(enet_txbd_config_t *txbdCfg)
{
int i;
enet_dev_if_t *enetIfPtr = (enet_dev_if_t *)&enetDevIf[BOARD_DEBUG_ENET_INSTANCE];
// Allocate TX descriptors
if(TX_DESC_BUF_BASE!=NULL){
free(TX_DESC_BUF_BASE);
TX_DESC_BUF_BASE=NULL;
}
TX_DESC_BUF_BASE = (void*)calloc(1, enet_hal_get_bd_size() * enetIfPtr->macCfgPtr->txBdNumber + ENET_BD_ALIGNMENT);
if(TX_DESC_BUF_BASE==NULL){
return NyLPC_TBool_FALSE;
}
_driver.tx_desc_start_addr = (uint8_t *)ENET_ALIGN((uint32_t)TX_DESC_BUF_BASE, ENET_BD_ALIGNMENT);
txbdCfg->txBdPtrAlign = _driver.tx_desc_start_addr;
txbdCfg->txBufferNum = enetIfPtr->macCfgPtr->txBdNumber;
txbdCfg->txBufferSizeAlign = ENET_ALIGN(enetIfPtr->maxFrameSize, ENET_TX_BUFFER_ALIGNMENT);
// Make the TX descriptor ring circular
for(i=0;i<NUM_OF_TX_RING;i++){
setTxDesc(i);
}
return NyLPC_TBool_TRUE;
}
/** \brief Sets up the TX descriptor ring buffers.
*
* This function sets up the descriptor list used for transmit packets.
*
* \param[in] netif Pointer to driver data structure
* \returns ERR_MEM if out of memory, ERR_OK otherwise
*/
static err_t k64f_tx_setup(struct netif *netif, enet_txbd_config_t *txbdCfg) {
struct k64f_enetdata *k64f_enet = netif->state;
enet_dev_if_t *enetIfPtr = (enet_dev_if_t *)&enetDevIf[BOARD_DEBUG_ENET_INSTANCE];
uint8_t *txBdPtr;
// Allocate TX descriptors
txBdPtr = (uint8_t *)calloc(1, enet_hal_get_bd_size() * enetIfPtr->macCfgPtr->txBdNumber + ENET_BD_ALIGNMENT);
if(!txBdPtr)
return ERR_MEM;
k64f_enet->tx_desc_start_addr = (uint8_t *)ENET_ALIGN((uint32_t)txBdPtr, ENET_BD_ALIGNMENT);
k64f_enet->tx_consume_index = k64f_enet->tx_produce_index = 0;
txbdCfg->txBdPtrAlign = k64f_enet->tx_desc_start_addr;
txbdCfg->txBufferNum = enetIfPtr->macCfgPtr->txBdNumber;
txbdCfg->txBufferSizeAlign = ENET_ALIGN(enetIfPtr->maxFrameSize, ENET_TX_BUFFER_ALIGNMENT);
// Make the TX descriptor ring circular
enet_hal_init_txbds(k64f_enet->tx_desc_start_addr + enet_hal_get_bd_size() * (ENET_TX_RING_LEN - 1), 1);
return ERR_OK;
}
/*FUNCTION****************************************************************
*
* Function Name: enet_mac_rxbd_init
* Return Value: The execution status.
* Description:Initialize the ENET receive buffer descriptors.
* Note: If you do receive on receive interrupt handler the receive
* data buffer number can be the same as the receive descriptor numbers.
* But if you are polling receive frames please make sure the receive data
* buffers are more than buffer descriptors to guarantee a good performance.
*END*********************************************************************/
uint32_t enet_mac_rxbd_init(enet_dev_if_t * enetIfPtr, enet_rxbd_config_t *rxbdCfg)
{
/* Check the input parameters*/
if ((!enetIfPtr) || (!rxbdCfg))
{
return kStatus_ENET_InvalidInput;
}
enetIfPtr->macContextPtr->bufferdescSize = enet_hal_get_bd_size();
/* Initialize the bd status*/
enetIfPtr->macContextPtr->isRxFull = false;
/* Initialize receive bd base address and current address*/
enetIfPtr->macContextPtr->rxBdBasePtr = rxbdCfg->rxBdPtrAlign;
enetIfPtr->macContextPtr->rxBdCurPtr = enetIfPtr->macContextPtr->rxBdBasePtr;
enetIfPtr->macContextPtr->rxBdDirtyPtr = enetIfPtr->macContextPtr->rxBdBasePtr;
enet_hal_set_rxbd_address(enetIfPtr->deviceNumber, (uint32_t)(enetIfPtr->macContextPtr->rxBdBasePtr));
return kStatus_ENET_Success;
}
/** \brief Sets up the RX descriptor ring buffers.
*
* This function sets up the descriptor list used for receive packets.
*
* \param[in] netif Pointer to driver data structure
* \returns ERR_MEM if out of memory, ERR_OK otherwise
*/
static err_t k64f_rx_setup(struct netif *netif, enet_rxbd_config_t *rxbdCfg) {
struct k64f_enetdata *k64f_enet = netif->state;
enet_dev_if_t *enetIfPtr = (enet_dev_if_t *)&enetDevIf[BOARD_DEBUG_ENET_INSTANCE];
uint8_t *rxBdPtr;
uint32_t rxBufferSizeAligned;
// Allocate RX descriptors
rxBdPtr = (uint8_t *)calloc(1, enet_hal_get_bd_size() * enetIfPtr->macCfgPtr->rxBdNumber + ENET_BD_ALIGNMENT);
if(!rxBdPtr)
return ERR_MEM;
k64f_enet->rx_desc_start_addr = (uint8_t *)ENET_ALIGN((uint32_t)rxBdPtr, ENET_BD_ALIGNMENT);
k64f_enet->rx_free_descs = enetIfPtr->macCfgPtr->rxBdNumber;
k64f_enet->rx_fill_index = 0;
rxBufferSizeAligned = ENET_ALIGN(enetIfPtr->macCfgPtr->rxBufferSize, ENET_RX_BUFFER_ALIGNMENT);
enetIfPtr->macContextPtr->rxBufferSizeAligned = rxBufferSizeAligned;
rxbdCfg->rxBdPtrAlign = k64f_enet->rx_desc_start_addr;
rxbdCfg->rxBdNum = enetIfPtr->macCfgPtr->rxBdNumber;
rxbdCfg->rxBufferNum = enetIfPtr->macCfgPtr->rxBdNumber;
k64f_rx_queue(netif, RX_PBUF_AUTO_INDEX);
return ERR_OK;
}
static void updateTxDesc(int idx, uint8_t *buffer, uint16_t length, bool isLast)
{
volatile enet_bd_struct_t * bdPtr = (enet_bd_struct_t *)(_driver.tx_desc_start_addr + idx * enet_hal_get_bd_size());
bdPtr->length = HTONS(length); /* Set data length*/
bdPtr->buffer = (uint8_t *)HTONL((uint32_t)buffer); /* Set data buffer*/
bdPtr->control |= kEnetTxBdLast;//最終フラグメントのフラグね
bdPtr->controlExtend1 |= kEnetTxBdTxInterrupt;
bdPtr->controlExtend2 &= ~TX_DESC_UPDATED_MASK; // descriptor not updated by DMA
bdPtr->control |= kEnetTxBdTransmitCrc | kEnetTxBdReady;
if(isLast){
//これはデスクリプタの終了位置のフラグ
bdPtr->control |=kEnetTxBdWrap;
}
enet_hal_active_txbd(BOARD_DEBUG_ENET_INSTANCE);
}
/*FUNCTION****************************************************************
*
* Function Name: enet_hal_update_txbds
* Description: Update ENET transmit buffer descriptors.
*END*********************************************************************/
void k64f_update_txbds(struct k64f_enetdata *k64f_enet, int idx, uint8_t *buffer, uint16_t length, bool isLast)
{
volatile enet_bd_struct_t * bdPtr = (enet_bd_struct_t *)(k64f_enet->tx_desc_start_addr + idx * enet_hal_get_bd_size());
bdPtr->length = HTONS(length); /* Set data length*/
bdPtr->buffer = (uint8_t *)HTONL((uint32_t)buffer); /* Set data buffer*/
if (isLast)
bdPtr->control |= kEnetTxBdLast;
else
bdPtr->control &= ~kEnetTxBdLast;
bdPtr->controlExtend1 |= kEnetTxBdTxInterrupt;
bdPtr->controlExtend2 &= ~TX_DESC_UPDATED_MASK; // descriptor not updated by DMA
bdPtr->control |= kEnetTxBdTransmitCrc | kEnetTxBdReady;
}
