Modify PCIe transaction memory attribute to improve performance, like SMMU bypass, cache snoopy, etc.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: hensonwang wanghuiqiang@huawei.com Signed-off-by: Heyi Guo heyi.guo@linaro.org Reviewed-by: Leif Lindholm leif.lindholm@linaro.org --- .../Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf | 3 ++ .../Hi1610/Drivers/PcieInit1610/PcieInitLib.c | 52 ++++++++++++++++++++++ Chips/Hisilicon/HisiPkg.dec | 1 + Chips/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h | 1 + Platforms/Hisilicon/D03/D03.dsc | 1 + 5 files changed, 58 insertions(+) mode change 100755 => 100644 Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c
diff --git a/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf b/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf index 63d8bb1..8659e29 100644 --- a/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf +++ b/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf @@ -53,6 +53,9 @@ gHisiTokenSpaceGuid.Pcdsoctype gHisiTokenSpaceGuid.PcdPcieMsiTargetAddress
+[FeaturePcd] + gHisiTokenSpaceGuid.PcdIsPciPerfTuningEnable + [depex] TRUE
diff --git a/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c b/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c old mode 100755 new mode 100644 index 06ecf87..39b9ea7 --- a/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c +++ b/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c @@ -21,6 +21,8 @@ #include <Library/IoLib.h> #include <Library/TimerLib.h>
+#define PCIE_SYS_REG_OFFSET 0x1000 + static PCIE_INIT_CFG mPcieIntCfg; UINT64 pcie_subctrl_base[2] = {0xb0000000, BASE_4TB + 0xb0000000}; UINT64 pcie_subctrl_base_1610[2] = {0xa0000000, 0xb0000000}; @@ -185,6 +187,50 @@ EFI_STATUS PcieEnableItssm(UINT32 soctype, UINT32 HostBridgeNum, UINT32 Port)
}
+STATIC EFI_STATUS PciPerfTuning(UINT32 soctype, UINT32 HostBridgeNum, UINT32 Port) +{ + UINT32 Value; + UINTN RegSegmentOffset; + + if (Port >= PCIE_MAX_ROOTBRIDGE) { + DEBUG((DEBUG_ERROR, "Invalid port number: %d\n", Port)); + return EFI_INVALID_PARAMETER; + } + + RegSegmentOffset = PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_SYS_REG_OFFSET; + + //Enable SMMU bypass for translation + RegRead(RegSegmentOffset + PCIE_SYS_CTRL13_REG, Value); + //BIT13: controller master read SMMU bypass + //BIT12: controller master write SMMU bypass + //BIT10: SMMU bypass enable + Value |= (BIT13 | BIT12 | BIT10); + RegWrite(RegSegmentOffset + PCIE_SYS_CTRL13_REG, Value); + + //Switch strongly order (SO) to relaxed order (RO) for write transaction + RegRead(RegSegmentOffset + PCIE_CTRL_6_REG, Value); + //BIT13 | BIT12: Enable write merge and SMMU streaming ordered write acknowledge + Value |= (BIT13 | BIT12); + //BIT29 | BIT27 | BIT25 | BIT23 | BIT21 | BIT19 | BIT17: Enable RO for all types of write transaction + Value |= (BIT29 | BIT27 | BIT25 | BIT23 | BIT21 | BIT19 | BIT17); + RegWrite(RegSegmentOffset + PCIE_CTRL_6_REG, Value); + + //Force streamID for controller read operation + RegRead(RegSegmentOffset + PCIE_SYS_CTRL54_REG, Value); + //Force using streamID in PCIE_SYS_CTRL54_REG + Value &= ~(BIT30); + //Set streamID to 0, bit[0:15] is for request ID and should be kept + Value &= ~(0xff << 16); + RegWrite(RegSegmentOffset + PCIE_SYS_CTRL54_REG, Value); + + //Enable read and write snoopy + RegRead(RegSegmentOffset + PCIE_SYS_CTRL19_REG, Value); + Value |= (BIT30 | BIT28); + RegWrite(RegSegmentOffset + PCIE_SYS_CTRL19_REG, Value); + + return EFI_SUCCESS; +} + EFI_STATUS PcieDisableItssm(UINT32 soctype, UINT32 HostBridgeNum, UINT32 Port) { PCIE_CTRL_7_U pcie_ctrl7; @@ -939,6 +985,12 @@ PciePortInit (
/* assert LTSSM enable */ (VOID)PcieEnableItssm(soctype, HostBridgeNum, PortIndex); + if (FeaturePcdGet(PcdIsPciPerfTuningEnable)) { + //PCIe will still work even if performance tuning fails, + //and there is warning message inside the function to print + //detailed error if there is. + (VOID)PciPerfTuning(soctype, HostBridgeNum, PortIndex); + }
PcieConfigContextHi1610(soctype, HostBridgeNum, PortIndex); /* diff --git a/Chips/Hisilicon/HisiPkg.dec b/Chips/Hisilicon/HisiPkg.dec index 8e46e0d..2ce60d9 100644 --- a/Chips/Hisilicon/HisiPkg.dec +++ b/Chips/Hisilicon/HisiPkg.dec @@ -161,6 +161,7 @@ gHisiTokenSpaceGuid.PcdSerDesFlowCtrlFlag|0|UINT32|0x40000056
[PcdsFeatureFlag] + gHisiTokenSpaceGuid.PcdIsPciPerfTuningEnable|FALSE|BOOLEAN|0x00000066
diff --git a/Chips/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h b/Chips/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h index bdd80f8..539d567 100644 --- a/Chips/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h +++ b/Chips/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h @@ -8981,6 +8981,7 @@ typedef union tagIepMsiCtrlIntStatus #define PCIE_SYS_CTRL24_REG (PCI_SYS_BASE + 0x1b4) #define PCIE_SYS_CTRL28_REG (PCI_SYS_BASE + 0x1c4) #define PCIE_SYS_CTRL29_REG (PCI_SYS_BASE + 0x1c8) +#define PCIE_SYS_CTRL54_REG (PCI_SYS_BASE + 0x274) #define PCIE_SYS_STATE5_REG (PCI_SYS_BASE + 0x30) #define PCIE_SYS_STATE6_REG (PCI_SYS_BASE + 0x34) #define PCIE_SYS_STATE7_REG (PCI_SYS_BASE + 0x38) diff --git a/Platforms/Hisilicon/D03/D03.dsc b/Platforms/Hisilicon/D03/D03.dsc index 6d82627..942b2b8 100644 --- a/Platforms/Hisilicon/D03/D03.dsc +++ b/Platforms/Hisilicon/D03/D03.dsc @@ -111,6 +111,7 @@ ## If TRUE, Graphics Output Protocol will be installed on virtual handle created by ConsplitterDxe. # It could be set FALSE to save size. gEfiMdeModulePkgTokenSpaceGuid.PcdConOutGopSupport|TRUE + gHisiTokenSpaceGuid.PcdIsPciPerfTuningEnable|TRUE
[PcdsFixedAtBuild.common] gArmPlatformTokenSpaceGuid.PcdFirmwareVendor|"ARM Versatile Express"