diff options
| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2023-01-14 18:01:30 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-01-17 11:36:44 +0100 |
| commit | 06127504c282e3e668581b5a1f410980c0c6c064 (patch) | |
| tree | eb6e2c1f6e620c4095249485c93252156b832ba0 /drivers/net/ethernet/mediatek/mtk_ppe.c | |
| parent | net: ethernet: mtk_eth_soc: introduce mtk_hw_warm_reset support (diff) | |
| download | linux-06127504c282e3e668581b5a1f410980c0c6c064.tar.xz linux-06127504c282e3e668581b5a1f410980c0c6c064.zip | |
net: ethernet: mtk_eth_soc: align reset procedure to vendor sdk
Avoid to power-down the ethernet chip during hw reset and align reset
procedure to vendor sdk.
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Co-developed-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_ppe.c')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_ppe.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c index 269208a841c7..451a87b1bc20 100644 --- a/drivers/net/ethernet/mediatek/mtk_ppe.c +++ b/drivers/net/ethernet/mediatek/mtk_ppe.c @@ -730,6 +730,33 @@ int mtk_foe_entry_idle_time(struct mtk_ppe *ppe, struct mtk_flow_entry *entry) return __mtk_foe_entry_idle_time(ppe, entry->data.ib1); } +int mtk_ppe_prepare_reset(struct mtk_ppe *ppe) +{ + if (!ppe) + return -EINVAL; + + /* disable KA */ + ppe_clear(ppe, MTK_PPE_TB_CFG, MTK_PPE_TB_CFG_KEEPALIVE); + ppe_clear(ppe, MTK_PPE_BIND_LMT1, MTK_PPE_NTU_KEEPALIVE); + ppe_w32(ppe, MTK_PPE_KEEPALIVE, 0); + usleep_range(10000, 11000); + + /* set KA timer to maximum */ + ppe_set(ppe, MTK_PPE_BIND_LMT1, MTK_PPE_NTU_KEEPALIVE); + ppe_w32(ppe, MTK_PPE_KEEPALIVE, 0xffffffff); + + /* set KA tick select */ + ppe_set(ppe, MTK_PPE_TB_CFG, MTK_PPE_TB_TICK_SEL); + ppe_set(ppe, MTK_PPE_TB_CFG, MTK_PPE_TB_CFG_KEEPALIVE); + usleep_range(10000, 11000); + + /* disable scan mode */ + ppe_clear(ppe, MTK_PPE_TB_CFG, MTK_PPE_TB_CFG_SCAN_MODE); + usleep_range(10000, 11000); + + return mtk_ppe_wait_busy(ppe); +} + struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base, int version, int index) { |