diff options
Diffstat (limited to 'drivers/pci/host/pci-tegra.c')
| -rw-r--r-- | drivers/pci/host/pci-tegra.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index bd521b77bc5b..7d7d9feae144 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -182,6 +182,7 @@ #define RP_VEND_XP 0x00000F00 #define RP_VEND_XP_DL_UP (1 << 30) +#define RP_VEND_XP_UPDATE_FC_THRESHOLD (0xFF << 18) #define RP_LINK_CONTROL_STATUS 0x00000090 @@ -195,6 +196,13 @@ #define NV_PCIE2_RP_INTR_BCR 0x0000003C #define NV_PCIE2_RP_INTR_BCR_INTR_LINE (0xFF << 0) +#define NV_PCIE2_RP_PRIV_XP_DL 0x00000494 +#define PCIE2_RP_PRIV_XP_DL_GEN2_UPD_FC_TSHOLD (0x1FF << 1) + +#define NV_PCIE2_RP_RX_HDR_LIMIT 0x00000E00 +#define PCIE2_RP_RX_HDR_LIMIT_PW_MASK (0xFF00) +#define PCIE2_RP_RX_HDR_LIMIT_PW (0x0E << 8) + #define NV_PCIE2_RP_PRIV_MISC 0x00000FE0 #define PCIE2_RP_PRIV_MISC_PRSNT_MAP_EP_PRSNT (0xE << 0) #define PCIE2_RP_PRIV_MISC_PRSNT_MAP_EP_ABSNT (0xF << 0) @@ -1609,6 +1617,19 @@ static void tegra_pcie_apply_sw_war(int index, bool enum_done) data = rp_readl(NV_PCIE2_RP_INTR_BCR, index); data |= NV_PCIE2_RP_INTR_BCR_INTR_LINE; rp_writel(data, NV_PCIE2_RP_INTR_BCR, index); + /* WAR for RAW violation on T124/T132 platforms */ + data = rp_readl(NV_PCIE2_RP_RX_HDR_LIMIT, index); + data &= ~PCIE2_RP_RX_HDR_LIMIT_PW_MASK; + data |= PCIE2_RP_RX_HDR_LIMIT_PW; + rp_writel(data, NV_PCIE2_RP_RX_HDR_LIMIT, index); + + data = rp_readl(NV_PCIE2_RP_PRIV_XP_DL, index); + data |= PCIE2_RP_PRIV_XP_DL_GEN2_UPD_FC_TSHOLD; + rp_writel(data, NV_PCIE2_RP_PRIV_XP_DL, index); + + data = rp_readl(RP_VEND_XP, index); + data |= RP_VEND_XP_UPDATE_FC_THRESHOLD; + rp_writel(data, RP_VEND_XP, index); } } |