vxge: always enable hardware time stamp
Hardware time stamp calculation can only be enabled by the privileged
function. Enable it always by default and simply use the ethtool
interface to set a flag to indicate whether or not the respective
function driver should indicate the timestamp along with the received
packet.
Also, make certain fields in vxge_hw_device_config bit-fields to reduce
the size of the struct.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c
index aff68c1..d192dad 100644
--- a/drivers/net/vxge/vxge-main.c
+++ b/drivers/net/vxge/vxge-main.c
@@ -3112,8 +3112,7 @@
return net_stats;
}
-static enum vxge_hw_status vxge_timestamp_config(struct vxgedev *vdev,
- int enable)
+static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
{
enum vxge_hw_status status;
u64 val64;
@@ -3123,27 +3122,24 @@
* required for the driver to load (due to a hardware bug),
* there is no need to do anything special here.
*/
- if (enable)
- val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
- VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
- VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
- else
- val64 = 0;
+ val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
+ VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
+ VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
- status = vxge_hw_mgmt_reg_write(vdev->devh,
+ status = vxge_hw_mgmt_reg_write(devh,
vxge_hw_mgmt_reg_type_mrpcim,
0,
offsetof(struct vxge_hw_mrpcim_reg,
xmac_timestamp),
val64);
- vxge_hw_device_flush_io(vdev->devh);
+ vxge_hw_device_flush_io(devh);
+ devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
return status;
}
static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data)
{
struct hwtstamp_config config;
- enum vxge_hw_status status;
int i;
if (copy_from_user(&config, data, sizeof(config)))
@@ -3164,10 +3160,6 @@
switch (config.rx_filter) {
case HWTSTAMP_FILTER_NONE:
- status = vxge_timestamp_config(vdev, 0);
- if (status != VXGE_HW_OK)
- return -EFAULT;
-
vdev->rx_hwts = 0;
config.rx_filter = HWTSTAMP_FILTER_NONE;
break;
@@ -3186,8 +3178,7 @@
case HWTSTAMP_FILTER_PTP_V2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
- status = vxge_timestamp_config(vdev, 1);
- if (status != VXGE_HW_OK)
+ if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
return -EFAULT;
vdev->rx_hwts = 1;
@@ -4575,6 +4566,24 @@
goto _exit4;
}
+ /* Always enable HWTS. This will always cause the FCS to be invalid,
+ * due to the fact that HWTS is using the FCS as the location of the
+ * timestamp. The HW FCS checking will still correctly determine if
+ * there is a valid checksum, and the FCS is being removed by the driver
+ * anyway. So no fucntionality is being lost. Since it is always
+ * enabled, we now simply use the ioctl call to set whether or not the
+ * driver should be paying attention to the HWTS.
+ */
+ if (is_privileged == VXGE_HW_OK) {
+ status = vxge_timestamp_config(hldev);
+ if (status != VXGE_HW_OK) {
+ vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
+ VXGE_DRIVER_NAME);
+ ret = -EFAULT;
+ goto _exit4;
+ }
+ }
+
vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
/* set private device info */