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Commit 9d01a25b authored by Sunil Paidimarri's avatar Sunil Paidimarri Committed by Gerrit - the friendly Code Review server
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net: stmmac: Tune settings for high data rates 



Enable OSP and set RSBZ to rx buffer size for
higher data rates.

Change-Id: I051ff726153e9f3b2f40bf6e2c7f8b33b682fc4a
Signed-off-by: default avatarSunil Paidimarri <hisunil@codeaurora.org>
parent b585bd9e

drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ipa.c

+4 −3
Original line number Diff line number Diff line
@@ -918,13 +918,12 @@ static int enable_rx_dma_interrupts(unsigned int QINX, 
	/* AIE - Abnormal Interrupt Summary Enable */

	/* FBE - Fatal Bus Error Enable */

	/* RIE - Receive Interrupt Enable */

	/* RBUE - Receive Buffer Unavailable Enable  */

	/* RSE - Receive Stopped Enable */

	DMA_IER_RGRD(QINX, VARDMA_IER);

	/* Reset all Rx interrupt bits */

	VARDMA_IER = VARDMA_IER & (unsigned long)(DMA_RX_INT_RESET_MASK);



	VARDMA_IER = VARDMA_IER | ((0x1) << 7) | ((0x1) << 14) | ((0x1) << 12) |

	VARDMA_IER = VARDMA_IER | ((0x1) << 14) | ((0x1) << 12) |

	    ((0x1) << 15);



	DMA_IER_RGWR(QINX, VARDMA_IER);
@@ -951,6 +950,8 @@ static void ethqos_configure_ipa_tx_dma_channel(unsigned int QINX, 
	ETHQOSDBG("\n");



	enable_tx_dma_interrupts(QINX, ethqos);

	/* Enable Operate on Second Packet for better tputs */

	DMA_TCR_OSP_UDFWR(QINX, 0x1);



	/* start TX DMA */

	priv->hw->dma->start_tx(priv->ioaddr, IPA_DMA_TX_CH);
@@ -968,7 +969,7 @@ static void ethqos_configure_ipa_rx_dma_channel(unsigned int QINX, 
	ETHQOSDBG("\n");

	/*Select Rx Buffer size = 2048bytes */



	DMA_RCR_RBSZ_UDFWR(QINX, priv->dma_buf_sz);

	DMA_RCR_RBSZ_UDFWR(QINX, ETHQOS_ETH_FRAME_LEN_IPA);



	enable_rx_dma_interrupts(QINX, ethqos);