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| author | Bruce Allan <bruce.w.allan@intel.com> | 2013-01-12 07:25:22 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2013-01-27 23:27:41 -0800 |
| commit | 3e35d9918cbbc224f88da4dd19cd90b2cd4f765e (patch) | |
| tree | 81baa95ae359030814558a35ffd3c359ebe4ece1 /drivers/net/ethernet/intel/e1000e/defines.h | |
| parent | c3d2dbf403367eb5c17f044aa74b772508d745c1 (diff) | |
| download | linux-3e35d9918cbbc224f88da4dd19cd90b2cd4f765e.tar.bz2 | |
e1000e: adjust PM QoS request
It has been found that devices other than 82579 (a.k.a. e1000_pch2lan)
suffer from dropped transactions on platforms with deep C-states when
jumbo frames are enabled. For example, LOMs on ICH9- and ICH10-based
platforms which recently had early-receive de-featured (for stability
reasons) suffer from this. To resolve this for all devices, when jumbo
frames are enabled set the PM QoS DMA latency request based on the size
of the receive packet buffer less one full frame.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/e1000e/defines.h')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/defines.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/defines.h b/drivers/net/ethernet/intel/e1000e/defines.h index 3b997194ac3b..c4587671dc73 100644 --- a/drivers/net/ethernet/intel/e1000e/defines.h +++ b/drivers/net/ethernet/intel/e1000e/defines.h @@ -393,6 +393,8 @@ #define E1000_PBA_8K 0x0008 /* 8KB */ #define E1000_PBA_16K 0x0010 /* 16KB */ +#define E1000_PBA_RXA_MASK 0xFFFF + #define E1000_PBS_16K E1000_PBA_16K /* Uncorrectable/correctable ECC Error counts and enable bits */ |