diff options
| author |   Wong, Vee Khee <vee.khee.wong@intel.com> | 2021-03-26 01:39:16 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-03-25 17:37:30 -0700 |
| commit | 6ccf12ae111e49324b439410066e8cc359aeee6d (patch) | |
| tree | 1c268024e10fcf3e50158107d46348d624c3ed23 /drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h | |
| parent | stmmac: intel: add support for multi-vector msi and msi-x (diff) | |
| download | linux-dev-6ccf12ae111e49324b439410066e8cc359aeee6d.tar.xz linux-dev-6ccf12ae111e49324b439410066e8cc359aeee6d.zip | |
net: stmmac: use interrupt mode INTM=1 for multi-MSI
For interrupt mode INTM=0, TX/RX transfer complete will trigger signal
not only on sbd_perch_[tx|rx]_intr_o (Transmit/Receive Per Channel) but
also on the sbd_intr_o (Common).
As for multi-MSI implementation, setting interrupt mode INTM=1 is more
efficient as each TX intr and RX intr (TI/RI) will be handled by TX/RX ISR
without the need of calling the common MAC ISR.
Updated the TX/RX NORMAL interrupts status checking process as the
NIS status bit is not asserted for any RI/TI events for INTM=1.
Signed-off-by: Wong, Vee Khee <vee.khee.wong@intel.com>
Co-developed-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h index 5c0c53832adb..05481eb13ba6 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h @@ -25,6 +25,9 @@ #define DMA_TBS_CTRL 0x00001050 /* DMA Bus Mode bitmap */ +#define DMA_BUS_MODE_INTM_MASK GENMASK(17, 16) +#define DMA_BUS_MODE_INTM_SHIFT 16 +#define DMA_BUS_MODE_INTM_MODE1 0x1 #define DMA_BUS_MODE_SFT_RESET BIT(0) /* DMA SYS Bus Mode bitmap */ |