diff options
| author | Vishal Kulkarni <vishal@chelsio.com> | 2019-02-14 18:19:15 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-14 12:39:35 -0500 |
| commit | d429005fdf2c9da19429c8b343eea61bd55b7c00 (patch) | |
| tree | 8d94d8f4c846736890f292bd136df5455d1ac7c2 /drivers/net/ethernet/chelsio/cxgb4/t4_hw.h | |
| parent | f694be27b7c0f31e926277dbde4395d56e79f36e (diff) | |
cxgb4/cxgb4vf: Add support for SGE doorbell queue timer
T6 introduced a Timer Mechanism in SGE called the
SGE Doorbell Queue Timer. With this we can now configure
TX Queues to get CIDX Updates when:
Time(CIDX == PIDX) >= Timer
Previously we rely on TX Queue Status Page updates by hardware
for DMA completions. This will make Hardware/Firmware actually
deliver the CIDX Updates as Ingress Queue messages with
commensurate Interrupts.
So we now have a new RX Path component for processing CIDX Updates
and reclaiming TX Descriptors faster.
Original work by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/t4_hw.h')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/t4_hw.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h index 361d5032c288..002fc62ea726 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h @@ -91,6 +91,7 @@ enum { SGE_CTXT_SIZE = 24, /* size of SGE context */ SGE_NTIMERS = 6, /* # of interrupt holdoff timer values */ SGE_NCOUNTERS = 4, /* # of interrupt packet counter values */ + SGE_NDBQTIMERS = 8, /* # of Doorbell Queue Timer values */ SGE_MAX_IQ_SIZE = 65520, SGE_TIMER_RSTRT_CNTR = 6, /* restart RX packet threshold counter */ |