From: Yan Zhang zhangyan81@huawei.com
In order to replace command line parameter pcie_aspm=off, BIOS needs to disable Pcie Aspm support during Pcie initilization. D03 and D05 do not support PCIe ASPM, so we disable it in BIOS.
Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ming Huang huangming23@huawei.com Signed-off-by: Heyi Guo heyi.guo@linaro.org Signed-off-by: Yan Zhang zhangyan81@huawei.com --- Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c | 103 ++++++++++++++++++++ Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.h | 2 + Silicon/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h | 2 + 3 files changed, 107 insertions(+)
diff --git a/Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c b/Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c index f420c91..c1c3fbb 100644 --- a/Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c +++ b/Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c @@ -1033,6 +1033,106 @@ DisableRcOptionRom ( return; }
+STATIC +VOID +PcieDbiCs2Enable ( + IN UINT32 HostBridgeNum, + IN UINT32 Port, + IN BOOLEAN Val + ) +{ + UINT32 RegVal; + + RegRead ( + PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_SUBCTRL_SC_PCIE_SYS_CTRL21, + RegVal + ); + if (Val) { + RegVal = RegVal | BIT2; + /* BIT2: DBI Chip Select indicator. 0 indicates CS, 1 indicates CS2.*/ + } else { + RegVal = RegVal & (~BIT2); + } + RegWrite ( + PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_SUBCTRL_SC_PCIE_SYS_CTRL21, + RegVal + ); +} + +STATIC +BOOLEAN +PcieDBIReadOnlyWriteEnable ( + IN UINT32 HostBridgeNum, + IN UINT32 Port + ) +{ + UINT32 Val; + + RegRead ( + PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_DBI_READ_ONLY_WRITE_ENABLE, + Val + ); + if (Val == 0x1) { + return TRUE; + } else { + RegWrite ( + PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_DBI_READ_ONLY_WRITE_ENABLE, + 0x1 + ); + /* Delay 10us to make sure the PCIE device have enouph time to response. */ + MicroSecondDelay(10); + RegRead ( + PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_DBI_READ_ONLY_WRITE_ENABLE, + Val + ); + if (Val == 0x1) { + return TRUE; + } + } + DEBUG ((DEBUG_ERROR,"PcieDBIReadOnlyWriteEnable Fail!!!\n")); + return FALSE; +} + +STATIC +VOID +SwitchPcieASPMSupport ( + IN UINT32 HostBridgeNum, + IN UINT32 Port, + IN UINT8 Val + ) +{ + PCIE_EP_PCIE_CAP3_U PcieCap3; + + if (Port >= PCIE_MAX_ROOTBRIDGE) { + DEBUG ((DEBUG_ERROR, "Port is not valid\n")); + return; + } + if (!PcieDBIReadOnlyWriteEnable (HostBridgeNum, Port)) { + DEBUG ((DEBUG_INFO, "PcieDBI ReadOnly Reg do not Enable!!!\n")); + return; + } + PcieDbiCs2Enable (HostBridgeNum, Port, FALSE); + + RegRead ( + PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_EP_PCIE_CAP3_REG, + PcieCap3.UInt32 + ); + PcieCap3.Bits.active_state_power_management = Val; + RegWrite ( + PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_EP_PCIE_CAP3_REG, + PcieCap3.UInt32 + ); + RegRead ( + PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_EP_PCIE_CAP3_REG, + PcieCap3.UInt32 + ); + DEBUG ((DEBUG_INFO, + "ASPI active state power management: %d\n", + PcieCap3.Bits.active_state_power_management)); + + PcieDbiCs2Enable (HostBridgeNum, Port, TRUE); +} + EFI_STATUS EFIAPI PciePortInit ( @@ -1090,6 +1190,9 @@ PciePortInit ( /* disable link up interrupt */ (VOID)PcieMaskLinkUpInit(soctype, HostBridgeNum, PortIndex);
+ /* disable ASPM */ + SwitchPcieASPMSupport (HostBridgeNum, PortIndex, PCIE_ASPM_DISABLE); + /* Pcie Equalization*/ (VOID)PcieEqualization(soctype ,HostBridgeNum, PortIndex);
diff --git a/Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.h b/Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.h index 9a0f636..e96c53c 100644 --- a/Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.h +++ b/Silicon/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.h @@ -77,6 +77,8 @@ #define RegWrite(addr,data) MmioWrite32((addr), (data)) #define RegRead(addr,data) ((data) = MmioRead32 (addr))
+#define PCIE_ASPM_DISABLE 0x0 +#define PCIE_ASPM_ENABLE 0x1
typedef struct tagPcieDebugInfo { diff --git a/Silicon/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h b/Silicon/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h index bf57652..c8b9781 100644 --- a/Silicon/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h +++ b/Silicon/Hisilicon/Include/Regs/HisiPcieV1RegOffset.h @@ -135,6 +135,7 @@ #define PCIE_EEP_PORTLOGIC53_REG (0x888) #define PCIE_EEP_GEN3_CONTRL_REG (0x890) #define PCIE_EEP_PIPE_LOOPBACK_REG (0x8B8) +#define PCIE_DBI_READ_ONLY_WRITE_ENABLE (0x8BC) #define PCIE_EEP_PORTLOGIC54_REG (0x900) #define PCIE_EEP_PORTLOGIC55_REG (0x904) #define PCIE_EEP_PORTLOGIC56_REG (0x908) @@ -12556,6 +12557,7 @@ typedef union tagPortlogic93 #define PCIE_SUBCTRL_SC_DISPATCH_DAW_ARRAY5_REG (PCIE_SUBCTRL_BASE + 0x1018) #define PCIE_SUBCTRL_SC_DISPATCH_DAW_ARRAY6_REG (PCIE_SUBCTRL_BASE + 0x101C) #define PCIE_SUBCTRL_SC_DISPATCH_DAW_ARRAY7_REG (PCIE_SUBCTRL_BASE + 0x1020) +#define PCIE_SUBCTRL_SC_PCIE_SYS_CTRL21 (PCIE_SUBCTRL_BASE + 0x1024) #define PCIE_SUBCTRL_SC_DISPATCH_RETRY_CONTROL_REG (PCIE_SUBCTRL_BASE + 0x1030) #define PCIE_SUBCTRL_SC_DISPATCH_INTMASK_REG (PCIE_SUBCTRL_BASE + 0x1100) #define PCIE_SUBCTRL_SC_DISPATCH_RAWINT_REG (PCIE_SUBCTRL_BASE + 0x1104)