[Linaro-uefi,04/27] Hisilicon/PCIe: support multiple MSI target addresses

There might be multiple PCIe associated ITS in the system, so we change
PCD of MSI target address to a feature PCD and specify the addresses in
the code. If ITS is not supported by OS, MSI target address will be set
to GIC distributor.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
---
 Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf |  3 ++-
 Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c   | 12 +++++++++---
 Chips/Hisilicon/HisiPkg.dec                                 |  2 +-
 Platforms/Hisilicon/D03/D03.dsc                             |  2 +-
 4 files changed, 13 insertions(+), 6 deletions(-)

On Thu, Nov 10, 2016 at 09:52:08PM +0800, Heyi Guo wrote:
> There might be multiple PCIe associated ITS in the system, so we change
> PCD of MSI target address to a feature PCD and specify the addresses in
> the code. If ITS is not supported by OS, MSI target address will be set
> to GIC distributor.
> 
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
> ---
>  Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf |  3 ++-
>  Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c   | 12 +++++++++---
>  Chips/Hisilicon/HisiPkg.dec                                 |  2 +-
>  Platforms/Hisilicon/D03/D03.dsc                             |  2 +-
>  4 files changed, 13 insertions(+), 6 deletions(-)
> 
> diff --git a/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf b/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf
> index 8659e29..8b10dbc 100644
> --- a/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf
> +++ b/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitDxe.inf
> @@ -51,9 +51,10 @@
>    gHisiTokenSpaceGuid.PcdPcieRootBridgeMask
>    gHisiTokenSpaceGuid.PcdPcieRootBridgeMask2P
>    gHisiTokenSpaceGuid.Pcdsoctype
> -  gHisiTokenSpaceGuid.PcdPcieMsiTargetAddress
> +  gArmTokenSpaceGuid.PcdGicDistributorBase
>  
>  [FeaturePcd]
> +  gHisiTokenSpaceGuid.PcdIsItsSupported
>    gHisiTokenSpaceGuid.PcdIsPciPerfTuningEnable
>  
>  [depex]
> diff --git a/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c b/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c
> index e58d87c..445b997 100644
> --- a/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c
> +++ b/Chips/Hisilicon/Hi1610/Drivers/PcieInit1610/PcieInitLib.c
> @@ -906,9 +906,15 @@ VOID PcieWriteOwnConfig(UINT32 HostBridgeNum, UINT32 Port, UINT32 Offset, UINT32
>  void PcieConfigContextHi1610(UINT32 soctype, UINT32 HostBridgeNum, UINT32 Port)
>  {
>      UINT32 Value = 0;
> -
> -    RegWrite(PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + 0x11b4, PcdGet64 (PcdPcieMsiTargetAddress));
> -    RegWrite(PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + 0x11c4, 0);
> +    if (FeaturePcdGet (PcdIsItsSupported)) {
> +        //PCIE_SYS_CTRL24_REG is MSI Low address register
> +        //PCIE_SYS_CTRL28_REG is MSI High addres register
> +        RegWrite(PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_SYS_REG_OFFSET + PCIE_SYS_CTRL24_REG, PCIE_ITS_1610[HostBridgeNum][Port]);
> +        RegWrite(PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_SYS_REG_OFFSET + PCIE_SYS_CTRL28_REG, PCIE_ITS_1610[HostBridgeNum][Port] >> 32);
> +    } else {
> +        RegWrite(PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_SYS_REG_OFFSET + PCIE_SYS_CTRL24_REG, PcdGet64 (PcdGicDistributorBase) + 0x40);

What's the 0x40?

> +        RegWrite(PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + PCIE_SYS_REG_OFFSET + PCIE_SYS_CTRL28_REG, (PcdGet64 (PcdGicDistributorBase) + 0x40) >> 32);

Could you create a SysRegWrite(UINT32 Bridge, UINT32 Port, UINT32 Register, UINT32 Value)
helper? So that the line above turns into
  SysRegWrite (HostBridgeNum, Port, PCIE_SYS_CTRL28_REG, (PcdGet64 (PcdGicDistributorBase) + 0x40) >> 32);
?

> +    }
>      RegRead(PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + 0x11c8, Value);
>      Value |= (1 << 12);
>      RegWrite(PCIE_APB_SLAVE_BASE_1610[HostBridgeNum][Port] + 0x11c8, Value);
> diff --git a/Chips/Hisilicon/HisiPkg.dec b/Chips/Hisilicon/HisiPkg.dec
> index fca0b70..39dd75a 100644
> --- a/Chips/Hisilicon/HisiPkg.dec
> +++ b/Chips/Hisilicon/HisiPkg.dec
> @@ -267,11 +267,11 @@
>    gHisiTokenSpaceGuid.PcdHb1Rb7IoSize|0|UINT64|0x2110005d
>  
>    gHisiTokenSpaceGuid.Pcdsoctype|0|UINT32|0x00000061
> -  gHisiTokenSpaceGuid.PcdPcieMsiTargetAddress|0x0|UINT64|0x00000064
>    gHisiTokenSpaceGuid.PcdSerDesFlowCtrlFlag|0|UINT32|0x40000056
>  
>  [PcdsFeatureFlag]
>    gHisiTokenSpaceGuid.PcdIsPciPerfTuningEnable|FALSE|BOOLEAN|0x00000066
> +  gHisiTokenSpaceGuid.PcdIsItsSupported|FALSE|BOOLEAN|0x00000065
>  

Insert sorted?

>  
>  
> diff --git a/Platforms/Hisilicon/D03/D03.dsc b/Platforms/Hisilicon/D03/D03.dsc
> index 942b2b8..7c72c84 100644
> --- a/Platforms/Hisilicon/D03/D03.dsc
> +++ b/Platforms/Hisilicon/D03/D03.dsc
> @@ -112,6 +112,7 @@
>    #  It could be set FALSE to save size.
>    gEfiMdeModulePkgTokenSpaceGuid.PcdConOutGopSupport|TRUE
>    gHisiTokenSpaceGuid.PcdIsPciPerfTuningEnable|TRUE
> +  gHisiTokenSpaceGuid.PcdIsItsSupported|TRUE

Insert sorted?

>  
>  [PcdsFixedAtBuild.common]
>    gArmPlatformTokenSpaceGuid.PcdFirmwareVendor|"ARM Versatile Express"
> @@ -309,7 +310,6 @@
>    gArmPlatformTokenSpaceGuid.PcdSP804TimerPerformanceBase|0x40060000
>    gArmPlatformTokenSpaceGuid.PcdSP804TimerMetronomeBase|0x40060000
>  
> -  gHisiTokenSpaceGuid.PcdPcieMsiTargetAddress|0xc6010040
>  
>  ################################################################################
>  #
> -- 
> 1.9.1
>