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pch_gbe: correct receive time stamp filtering 

This patch fixes the driver so that multicast PTP event messages can
be recognized by the hardware time stamping unit. The station address
register must be set according to the desired transport type.

[ RC - Rebased Takahiro's changes and wrote a commit message
  explaining the changes. ]

Signed-off-by: Takahiro Shimizu <tshimizu818@gmail.com>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Takahiro Shimizu 2012-04-20 18:50:34 +00:00 committed by David S. Miller
parent a6891ac70c
commit 358dfb6d77
2 changed files with 20 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
View File

@ -111,6 +111,9 @@ const char pch_driver_version[] = DRV_VERSION;
/* 0x44 Time Synchronization Channel Event Register Bits */
#define TX_SNAPSHOT_LOCKED (1<<0)
#define RX_SNAPSHOT_LOCKED (1<<1)
#define PTP_L4_MULTICAST_SA "01:00:5e:00:01:81"
#define PTP_L2_MULTICAST_SA "01:1b:19:00:00:00"
#endif
static unsigned int copybreak __read_mostly = PCH_GBE_COPYBREAK_DEFAULT;
@ -236,6 +239,7 @@ static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
struct hwtstamp_config cfg;
struct pch_gbe_adapter *adapter = netdev_priv(netdev);
struct pci_dev *pdev;
u8 station[20];
if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
return -EFAULT;
@ -269,9 +273,17 @@ static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
adapter->hwts_rx_en = 1;
pch_ch_control_write(pdev, MASTER_MODE | CAP_MODE0);
break;
case HWTSTAMP_FILTER_PTP_V2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
adapter->hwts_rx_en = 1;
pch_ch_control_write(pdev, V2_MODE | CAP_MODE2);
strcpy(station, PTP_L4_MULTICAST_SA);
pch_set_station_address(station, pdev);
break;
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
adapter->hwts_rx_en = 1;
pch_ch_control_write(pdev, V2_MODE | CAP_MODE2);
strcpy(station, PTP_L2_MULTICAST_SA);
pch_set_station_address(station, pdev);
break;
default:
return -ERANGE;

10
drivers/ptp/Kconfig
View File

@ -78,9 +78,13 @@ config PTP_1588_CLOCK_PCH
depends on PCH_GBE
help
This driver adds support for using the PCH EG20T as a PTP
clock. This clock is only useful if your PTP programs are
getting hardware time stamps on the PTP Ethernet packets
using the SO_TIMESTAMPING API.
clock. The hardware supports time stamping of PTP packets
when using the end-to-end delay (E2E) mechansim. The peer
delay mechansim (P2P) is not supported.
This clock is only useful if your PTP programs are getting
hardware time stamps on the PTP Ethernet packets using the
SO_TIMESTAMPING API.
To compile this driver as a module, choose M here: the module
will be called ptp_pch.