diff options
| author | Felix Fietkau <nbd@nbd.name> | 2022-04-05 22:57:43 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-06 16:08:48 +0300 |
| commit | d776a57e4a284b33bc839687afe9c381f3577eee (patch) | |
| tree | 662f83c9ed0ab9f57b75e505f8cf263a5606ac99 /drivers/net/ethernet/mediatek/mtk_eth_soc.h | |
| parent | 1dafd0d607032ac3cdb7f6298342b93b9dc7b3e1 (diff) | |
| download | linux-d776a57e4a284b33bc839687afe9c381f3577eee.tar.xz | |
net: ethernet: mtk_eth_soc: add support for coherent DMA
It improves performance by eliminating the need for a cache flush on rx and tx
In preparation for supporting WED (Wireless Ethernet Dispatch), also add a
function for disabling coherent DMA at runtime.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_eth_soc.h')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index c9d42be314b5..e701544c4287 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -465,6 +465,12 @@ #define RSTCTRL_FE BIT(6) #define RSTCTRL_PPE BIT(31) +/* ethernet dma channel agent map */ +#define ETHSYS_DMA_AG_MAP 0x408 +#define ETHSYS_DMA_AG_MAP_PDMA BIT(0) +#define ETHSYS_DMA_AG_MAP_QDMA BIT(1) +#define ETHSYS_DMA_AG_MAP_PPE BIT(2) + /* SGMII subsystem config registers */ /* Register to auto-negotiation restart */ #define SGMSYS_PCS_CONTROL_1 0x0 @@ -882,6 +888,7 @@ struct mtk_sgmii { /* struct mtk_eth - This is the main datasructure for holding the state * of the driver * @dev: The device pointer + * @dev: The device pointer used for dma mapping/alloc * @base: The mapped register i/o base * @page_lock: Make sure that register operations are atomic * @tx_irq__lock: Make sure that IRQ register operations are atomic @@ -925,6 +932,7 @@ struct mtk_sgmii { struct mtk_eth { struct device *dev; + struct device *dma_dev; void __iomem *base; spinlock_t page_lock; spinlock_t tx_irq_lock; @@ -1023,6 +1031,7 @@ int mtk_gmac_rgmii_path_setup(struct mtk_eth *eth, int mac_id); int mtk_eth_offload_init(struct mtk_eth *eth); int mtk_eth_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data); +void mtk_eth_set_dma_device(struct mtk_eth *eth, struct device *dma_dev); #endif /* MTK_ETH_H */ |