xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

amd-xgbe: Add support for per DMA channel interrupts

Browse Source 
This patch provides support for interrupts that are generated by the
Tx/Rx DMA channel pairs of the device.  This allows for Tx and Rx
processing to run across multiple processsors.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lendacky, Thomas
2014-11-04 16:06:56 -06:00
committed by David S. Miller
parent 174fd2597b
commit 9227dc5e57
5 changed files with 219 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/ethernet/amd/xgbe/xgbe-dev.c
View File

@@ -481,17 +481,21 @@ static void xgbe_enable_dma_interrupts(struct xgbe_prv_data *pdata)
if (channel->tx_ring) {
/* Enable the following Tx interrupts
* TIE - Transmit Interrupt Enable (unless polling)
* TIE - Transmit Interrupt Enable (unless using
* per channel interrupts)
*/
XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TIE, 1);
if (!pdata->per_channel_irq)
XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TIE, 1);
}
if (channel->rx_ring) {
/* Enable following Rx interrupts
* RBUE - Receive Buffer Unavailable Enable
* RIE - Receive Interrupt Enable
* RIE - Receive Interrupt Enable (unless using
* per channel interrupts)
*/
XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RBUE, 1);
XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RIE, 1);
if (!pdata->per_channel_irq)
XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RIE, 1);
}
XGMAC_DMA_IOWRITE(channel, DMA_CH_IER, dma_ch_ier);