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nvethernet: add support for RIWT

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This support enables the configuration of Receive Interrupt
Watchdog Timer register which indicates the watchdog timeout for
Receive Interrupt (RI) from the DMA.

Bug 200512422
Bug 2624476

Change-Id: I01bf170faa3c0f337d433eb19ebec49270483e18
Signed-off-by: Narayan Reddy <narayanr@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2139369
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Narayan Reddy
2019-06-19 16:05:55 +05:30
committed by Revanth Kumar Uppala
parent f71600879c
commit 481b69b58a
3 changed files with 115 additions and 2 deletions
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16
drivers/net/ethernet/nvidia/nvethernet/ether_linux.c
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@@ -3017,6 +3017,22 @@ static int ether_parse_dt(struct ether_priv_data *pdata)
osi_core->dcs_en = OSI_DISABLE;
}
/* RIWT value to be set */
ret = of_property_read_u32(np, "nvidia,rx_riwt", &osi_dma->rx_riwt);
if (ret < 0) {
osi_dma->use_riwt = OSI_DISABLE;
} else {
if ((osi_dma->rx_riwt > OSI_MAX_RX_COALESCE_USEC) ||
(osi_dma->rx_riwt < OSI_MIN_RX_COALESCE_USEC)) {
dev_err(dev,
"invalid rx_riwt, must be inrange %d to %d\n",
OSI_MIN_RX_COALESCE_USEC,
OSI_MAX_RX_COALESCE_USEC);
return -EINVAL;
}
osi_dma->use_riwt = OSI_ENABLE;
}
ret = ether_parse_phy_dt(pdata, np);
if (ret < 0) {
dev_err(dev, "failed to parse PHY DT\n");