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| author |   Esben Haabendal <esben@geanix.com> | 2019-04-30 09:17:58 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-05-01 14:33:30 -0400 |
| commit | 7e97a194aca03c6ff86f84e46e196f5c9ed5c32c (patch) | |
| tree | dfed285b7a785eca6bed68eb41fb9563d7de859e /include/linux/platform_data/xilinx-ll-temac.h | |
| parent | net: ll_temac: Replace bad usage of msleep() with usleep_range() (diff) | |
| download | linux-dev-7e97a194aca03c6ff86f84e46e196f5c9ed5c32c.tar.xz linux-dev-7e97a194aca03c6ff86f84e46e196f5c9ed5c32c.zip | |
net: ll_temac: Allow configuration of IRQ coalescing
This allows custom setup of IRQ coalescing for platforms using legacy
platform_device. The irq timeout and count parameters can be used for
tuning cpu load vs. latency.
I have maintained the 0x00000400 bit in TX_CHNL_CTRL. It is specified as
unused in the documentation I have available. It does not make any
difference in the hardware I have available, so it is left in to not risk
breaking other platforms where it might be used.
Signed-off-by: Esben Haabendal <esben@geanix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/platform_data/xilinx-ll-temac.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/platform_data/xilinx-ll-temac.h b/include/linux/platform_data/xilinx-ll-temac.h index b0b8238a9b7d..368530f98176 100644 --- a/include/linux/platform_data/xilinx-ll-temac.h +++ b/include/linux/platform_data/xilinx-ll-temac.h @@ -22,6 +22,11 @@ struct ll_temac_platform_data { * they share the same DCR bus bridge. */ struct mutex *indirect_mutex; + /* DMA channel control setup */ + u8 tx_irq_timeout; /* TX Interrupt Delay Time-out */ + u8 tx_irq_count; /* TX Interrupt Coalescing Threshold Count */ + u8 rx_irq_timeout; /* RX Interrupt Delay Time-out */ + u8 rx_irq_count; /* RX Interrupt Coalescing Threshold Count */ }; #endif /* __LINUX_XILINX_LL_TEMAC_H */ |