The C2 TCAM has internal FIFOs that are only useful for the built-in self-tests. Disable these FIFOS at init, as recommended in the functionnal specs.
Suggested-by: Alan Winkowski <[email protected]> Signed-off-by: Maxime Chevallier <[email protected]> --- drivers/net/ethernet/marvell/mvpp2/mvpp2.h | 2 ++ drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c | 6 ++++++ 2 files changed, 8 insertions(+) diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h index d5df813e08c4..bb466af9434b 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h @@ -148,6 +148,8 @@ #define MVPP22_CLS_C2_ATTR2 0x1b6c #define MVPP22_CLS_C2_ATTR2_RSS_EN BIT(30) #define MVPP22_CLS_C2_ATTR3 0x1b70 +#define MVPP22_CLS_C2_TCAM_CTRL 0x1b90 +#define MVPP22_CLS_C2_TCAM_BYPASS_FIFO BIT(0) /* Descriptor Manager Top Registers */ #define MVPP2_RXQ_NUM_REG 0x2040 diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c index 9ce73297276e..d549e9a29d9a 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c @@ -923,6 +923,12 @@ void mvpp2_cls_init(struct mvpp2 *priv) mvpp2_cls_c2_write(priv, &c2); } + /* Disable the FIFO stages in C2 engine, which are only used in BIST + * mode + */ + mvpp2_write(priv, MVPP22_CLS_C2_TCAM_CTRL, + MVPP22_CLS_C2_TCAM_BYPASS_FIFO); + mvpp2_cls_port_init_flows(priv); } -- 2.20.1
