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altera tse: Error-Bit on tx-avalon-stream always set.
The Error-Bit on the avalon streaming interface of the tx-dma-channel was always set. In SGMII configurations this leads to error-symbols on the PCS and packet-rejection on the receiver side (e.g. SGMII/1000Base-X connected switch). This only applies to the tse-configuration with MSGDMA. This issue was detected and fixed on a custom board with a direct connection to a Marvell switch in SGMII-PHY-Mode. (incl. custom patches for SGMII-PCS). According to the datasheet if ff_tx_err (avalon-streaming) is set it is forwarded to gm_tx_err. As a result the PCS is forwarding the error by sending a "/V/"-caracter. Signed-off-by: Andreas Oetken <ennoerlangen@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -72,7 +72,6 @@ struct msgdma_extended_desc {
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#define MSGDMA_DESC_CTL_TX_SINGLE (MSGDMA_DESC_CTL_GEN_SOP | \
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MSGDMA_DESC_CTL_GEN_EOP | \
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MSGDMA_DESC_CTL_TR_COMP_IRQ | \
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MSGDMA_DESC_CTL_TR_ERR_IRQ | \
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MSGDMA_DESC_CTL_GO)
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#define MSGDMA_DESC_CTL_RX_SINGLE (MSGDMA_DESC_CTL_END_ON_EOP | \
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