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connectivity: drivers: Update Nuvoton M467 EMAC DMA_IE ctl #15438

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Aug 16, 2023
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connectivity: drivers: Update Nuvoton M467 EMAC DMA_IE ctl #15438

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20 changes: 13 additions & 7 deletions connectivity/drivers/emac/TARGET_NUVOTON_EMAC/TARGET_M460/m460_eth.c
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Original file line number Diff line number Diff line change
Expand Up @@ -325,6 +325,7 @@ void EMAC0_IRQHandler(void)
uint32_t interrupt,dma_status_reg, mac_status_reg;
int status;
uint32_t dma_addr;
uint32_t dma_ie = DmaIntEnable;

// Check GMAC interrupt
mac_status_reg = synopGMACReadReg((u32 *)gmacdev->MacBase, GmacInterruptStatus);
Expand Down Expand Up @@ -401,6 +402,7 @@ void EMAC0_IRQHandler(void)
if(interrupt & synopGMACDmaRxNormal) {
//NU_RAW_Debug(("rx\n"));
NU_RAW_Debug(("%s:: Rx Normal \r\n", __FUNCTION__));
dma_ie &= ~DmaIntRxNormMask; // disable RX interrupt
// to handle received data
if (nu_eth_txrx_cb != NULL) {
nu_eth_txrx_cb('R', nu_userData);
Expand All @@ -409,16 +411,17 @@ void EMAC0_IRQHandler(void)

if(interrupt & synopGMACDmaRxAbnormal) {
mbed_error_printf("%s::Abnormal Rx Interrupt Seen \r\n",__FUNCTION__);
gmacdev->synopGMACNetStats.rx_over_errors++;
if(gmacdev->GMAC_Power_down == 0) { // If Mac is not in powerdown
synopGMAC_resume_dma_rx(gmacdev);//To handle GBPS with 12 descriptors
if(gmacdev->GMAC_Power_down == 0) { // If Mac is not in powerdown
gmacdev->synopGMACNetStats.rx_over_errors++;
dma_ie &= ~DmaIntRxAbnMask;
synopGMAC_resume_dma_rx(gmacdev); //To handle GBPS with 12 descriptors
}
}

if(interrupt & synopGMACDmaRxStopped) {
mbed_error_printf("%s::Receiver stopped seeing Rx interrupts \r\n",__FUNCTION__); //Receiver gone in to stopped state
if(gmacdev->GMAC_Power_down == 0) { // If Mac is not in powerdown
gmacdev->synopGMACNetStats.rx_over_errors++;
gmacdev->synopGMACNetStats.rx_over_errors++;
synopGMAC_enable_dma_rx(gmacdev);
}
}
Expand Down Expand Up @@ -450,13 +453,13 @@ void EMAC0_IRQHandler(void)
synopGMAC_take_desc_ownership_tx(gmacdev);

synopGMAC_enable_dma_tx(gmacdev);
mbed_error_printf("%s::Transmission Resumed\n",__FUNCTION__);
mbed_error_printf("%s::Transmission Resumed\n", __FUNCTION__);
}
}

/* Enable the interrupt before returning from ISR*/
// if( !(interrupt & synopGMACDmaRxNormal)) { /* RxNormal will enable INT in numaker_eth_trigger_rx */
synopGMAC_enable_interrupt(gmacdev,DmaIntEnable);
synopGMAC_enable_interrupt(gmacdev, dma_ie);
// }
return;
}
Expand Down Expand Up @@ -515,7 +518,10 @@ int numaker_eth_get_rx_buf(uint16_t *len, uint8_t **buf)
// synopGMAC_disable_dma_rx(gmacdev); // it will encounter DMA interrupt status as "Receiver stopped seeing Rx interrupts"
*len = synop_handle_received_data(NU_M460_INTF, buf);
dump_desc(gmacdev->RxBusyDesc);
if( *len <= 0 ) return -1; /* No available RX frame */
if( *len <= 0 ) {
synopGMAC_enable_interrupt(gmacdev, DmaIntEnable);
return -1; /* No available RX frame */
}

// length of payload should be <= 1514
if (*len > (NU_ETH_MAX_FLEN - 4)) {
Expand Down
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