forked from luck/tmp_suning_uos_patched
net: stmmac: enable tx queue 0 for gmac4 IPs synthesized with multiple TX queues
The dwmac4 IP can synthesized with 1-8 number of tx queues. On an IP synthesized with DWC_EQOS_NUM_TXQ > 1, all txqueues are disabled by default. For these IPs, the bitfield TXQEN is R/W. Always enable tx queue 0. The write will have no effect on IPs synthesized with DWC_EQOS_NUM_TXQ == 1. The driver does still not utilize more than one tx queue in the IP. Signed-off-by: Niklas Cassel <niklas.cassel@axis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
530742e707
commit
436feafe95
@ -155,8 +155,11 @@ enum power_event {
|
||||
#define MTL_CHAN_RX_DEBUG(x) (MTL_CHANX_BASE_ADDR(x) + 0x38)
|
||||
|
||||
#define MTL_OP_MODE_RSF BIT(5)
|
||||
#define MTL_OP_MODE_TXQEN BIT(3)
|
||||
#define MTL_OP_MODE_TSF BIT(1)
|
||||
|
||||
#define MTL_OP_MODE_TQS_MASK GENMASK(24, 16)
|
||||
|
||||
#define MTL_OP_MODE_TTC_MASK 0x70
|
||||
#define MTL_OP_MODE_TTC_SHIFT 4
|
||||
|
||||
|
@ -213,7 +213,17 @@ static void dwmac4_dma_chan_op_mode(void __iomem *ioaddr, int txmode,
|
||||
else
|
||||
mtl_tx_op |= MTL_OP_MODE_TTC_512;
|
||||
}
|
||||
|
||||
/* For an IP with DWC_EQOS_NUM_TXQ == 1, the fields TXQEN and TQS are RO
|
||||
* with reset values: TXQEN on, TQS == DWC_EQOS_TXFIFO_SIZE.
|
||||
* For an IP with DWC_EQOS_NUM_TXQ > 1, the fields TXQEN and TQS are R/W
|
||||
* with reset values: TXQEN off, TQS 256 bytes.
|
||||
*
|
||||
* Write the bits in both cases, since it will have no effect when RO.
|
||||
* For DWC_EQOS_NUM_TXQ > 1, the top bits in MTL_OP_MODE_TQS_MASK might
|
||||
* be RO, however, writing the whole TQS field will result in a value
|
||||
* equal to DWC_EQOS_TXFIFO_SIZE, just like for DWC_EQOS_NUM_TXQ == 1.
|
||||
*/
|
||||
mtl_tx_op |= MTL_OP_MODE_TXQEN | MTL_OP_MODE_TQS_MASK;
|
||||
writel(mtl_tx_op, ioaddr + MTL_CHAN_TX_OP_MODE(channel));
|
||||
|
||||
mtl_rx_op = readl(ioaddr + MTL_CHAN_RX_OP_MODE(channel));
|
||||
|
Loading…
Reference in New Issue
Block a user