diff options
| author | Matthew Vick | 2012-08-18 09:26:33 +0200 |
|---|---|---|
| committer | Jeff Kirsher | 2012-09-17 11:04:24 +0200 |
| commit | 1f6e8178d6851951876ad8524f4de7a0e6b111be (patch) | |
| tree | e7a363f6216bc4456ae57d4cd1895bcf5f958ce8 /drivers/net/ethernet/intel/igb/e1000_regs.h | |
| parent | igb: Store the MAC address in the name in the PTP struct. (diff) | |
| download | kernel-qcow2-linux-1f6e8178d6851951876ad8524f4de7a0e6b111be.tar.gz kernel-qcow2-linux-1f6e8178d6851951876ad8524f4de7a0e6b111be.tar.xz kernel-qcow2-linux-1f6e8178d6851951876ad8524f4de7a0e6b111be.zip | |
igb: Prevent dropped Tx timestamps via work items and interrupts.
In rare circumstances, it's possible a descriptor writeback will occur
before a timestamped Tx packet will go out on the wire, leading to the
driver believing the hardware failed to timestamp the packet. Schedule a
work item for 82576 and use the available time sync interrupt registers
on 82580 and above to account for this.
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/e1000_regs.h')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/e1000_regs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/e1000_regs.h b/drivers/net/ethernet/intel/igb/e1000_regs.h index 28394bea5253..faec840a5a8a 100644 --- a/drivers/net/ethernet/intel/igb/e1000_regs.h +++ b/drivers/net/ethernet/intel/igb/e1000_regs.h @@ -91,6 +91,8 @@ #define E1000_TIMINCA 0x0B608 /* Increment attributes register - RW */ #define E1000_TSAUXC 0x0B640 /* Timesync Auxiliary Control register */ #define E1000_SYSTIMR 0x0B6F8 /* System time register Residue */ +#define E1000_TSICR 0x0B66C /* Interrupt Cause Register */ +#define E1000_TSIM 0x0B674 /* Interrupt Mask Register */ /* Filtering Registers */ #define E1000_SAQF(_n) (0x5980 + 4 * (_n)) |