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nvethernet: add PTP support

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This takes care of implementing the PTP support
which includes PTP V1/V2 over IPV4,IPV6,Ethernet,gPTP.

Bug 200524751

Change-Id: Id647db1f60582717a09f24699841e00d7a582a1d
Signed-off-by: Narayan Reddy <narayanr@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2123439
GVS: Gerrit_Virtual_Submit
Reviewed-by: Srinivas Ramachandran <srinivasra@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
2019-05-15 23:36:32 +05:30
committed by Revanth Kumar Uppala
parent 6a3fdf61b3
commit 21dcef7b83
6 changed files with 511 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
drivers/net/ethernet/nvidia/nvethernet/ether_linux.c
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@@ -925,6 +925,15 @@ static int ether_open(struct net_device *dev)
/* Start the MAC */
osi_start_mac(pdata->osi_core);
/* Initialize PTP */
ret = ether_ptp_init(pdata);
if (ret < 0) {
dev_err(pdata->dev,
"%s:failed to initialize PTP with reason %d\n",
__func__, ret);
goto err_hw_init;
}
ether_napi_enable(pdata);
/* start PHY */
@@ -988,6 +997,9 @@ static int ether_close(struct net_device *dev)
/* free DMA resources after DMA stop */
free_dma_resources(pdata->osi_dma, pdata->dev);
/* PTP de-init */
ether_ptp_remove(pdata);
/* Stop the MAC */
osi_stop_mac(pdata->osi_core);
@@ -1104,6 +1116,11 @@ static int ether_tx_swcx_alloc(struct device *dev,
tx_pkt_cx->flags |= OSI_PKT_CX_VLAN;
}
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
tx_pkt_cx->flags |= OSI_PKT_CX_PTP;
}
if (((tx_pkt_cx->flags & OSI_PKT_CX_VLAN) == OSI_PKT_CX_VLAN) ||
((tx_pkt_cx->flags & OSI_PKT_CX_TSO) == OSI_PKT_CX_TSO)) {
tx_swcx = tx_ring->tx_swcx + cur_tx_idx;
@@ -1577,6 +1594,10 @@ static int ether_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
ret = ether_handle_priv_ioctl(dev, rq);
break;
case SIOCSHWTSTAMP:
ret = ether_handle_hwtstamp_ioctl(pdata, rq);
break;
default:
netdev_err(dev, "%s: Unsupported ioctl %d\n",
__func__, cmd);
@@ -2384,6 +2405,15 @@ static int ether_configure_car(struct platform_device *pdev,
return ret;
}
/* set PTP clock rate*/
ret = clk_set_rate(pdata->ptp_ref_clk, pdata->ptp_ref_clock_speed);
if (ret < 0) {
dev_err(&pdev->dev, "failed to set ptp clk rate\n");
return ret;
} else {
osi_core->ptp_config.ptp_ref_clk_rate = pdata->ptp_ref_clock_speed;
}
ret = ether_enable_clks(pdata);
if (ret < 0) {
dev_err(&pdev->dev, "failed to enable clks\n");
@@ -2576,20 +2606,27 @@ static void ether_parse_queue_prio(struct ether_priv_data *pdata,
*/
static int ether_parse_dt(struct ether_priv_data *pdata)
{
struct device *dev = pdata->dev;
struct platform_device *pdev = to_platform_device(dev);
struct osi_core_priv_data *osi_core = pdata->osi_core;
struct osi_dma_priv_data *osi_dma = pdata->osi_dma;
struct device *dev = pdata->dev;
struct device_node *np = dev->of_node;
struct platform_device *pdev = to_platform_device(dev);
int ret = -EINVAL;
/* read ptp clock */
ret = of_property_read_u32(np, "nvidia,ptp_ref_clock_speed",
&pdata->ptp_ref_clock_speed);
if (ret != 0) {
dev_err(dev, "setting default PTP clk rate as 312.5MHz\n");
pdata->ptp_ref_clock_speed = ETHER_DFLT_PTP_CLK;
}
/* Read Pause frame feature support */
ret = of_property_read_u32(np, "nvidia,pause_frames",
&pdata->osi_core->pause_frames);
if (ret < 0) {
dev_err(dev, "Failed to read nvida,pause_frames, so"
" setting to default support as enable\n");
pdata->osi_core->pause_frames = OSI_PAUSE_FRAMES_ENABLE;
" setting to default support as disable\n");
pdata->osi_core->pause_frames = OSI_PAUSE_FRAMES_DISABLE;
}
/* Check if IOMMU is enabled */