On Tue, Jun 26, 2018 at 12:44:23PM +0200, Ard Biesheuvel wrote:
> Add the basic support for enabling PCIe MMIO32 translation on the
> SynQuacer, without actually enabling it just yet. It would allow us
> to increase the bus range to 255 MB [from 127 MB] and the MMIO32
> range to 512 MB or more [from 128 MB], but it is more likely to
> cause compatibility issues with code ported from the PC platform.
> 
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ard Biesheuvel <[email protected]>
> ---
>  Silicon/Socionext/SynQuacer/AcpiTables/AcpiSsdtRootPci.asl                   
>                         | 8 ++++----
>  Silicon/Socionext/SynQuacer/Include/Platform/Pcie.h                          
>                         | 2 ++
>  
> Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLib.c
>             | 6 ++++--
>  
> Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLibConstructor.c
>  | 2 +-
>  4 files changed, 11 insertions(+), 7 deletions(-)
> 
> diff --git a/Silicon/Socionext/SynQuacer/AcpiTables/AcpiSsdtRootPci.asl 
> b/Silicon/Socionext/SynQuacer/AcpiTables/AcpiSsdtRootPci.asl
> index 51e9d0b22c3d..77d4763d1a85 100644
> --- a/Silicon/Socionext/SynQuacer/AcpiTables/AcpiSsdtRootPci.asl
> +++ b/Silicon/Socionext/SynQuacer/AcpiTables/AcpiSsdtRootPci.asl
> @@ -86,14 +86,14 @@ DefinitionBlock ("SsdtPci.aml", "SSDT", 1, "SNI", 
> "SYNQUACR",
>                      SYNQUACER_PCI_SEG0_BUSNUM_RANGE // RangeLength - # of 
> Busses
>                  )
>  
> -                DWordMemory ( // 32-bit BAR Windows
> +                QWordMemory ( // 32-bit BAR Windows
>                      ResourceProducer, PosDecode,
>                      MinFixed, MaxFixed,
>                      Cacheable, ReadWrite,
>                      0x00000000,                         // Granularity
>                      SYNQUACER_PCI_SEG0_MMIO32_MIN,      // Min Base Address
>                      SYNQUACER_PCI_SEG0_MMIO32_MAX,      // Max Base Address
> -                    0x00000000,                         // Translate
> +                    SYNQUACER_PCI_SEG0_MMIO32_XLATE,    // Translate
>                      SYNQUACER_PCI_SEG0_MMIO32_SIZE      // Length
>                  )
>  
> @@ -224,14 +224,14 @@ DefinitionBlock ("SsdtPci.aml", "SSDT", 1, "SNI", 
> "SYNQUACR",
>                      SYNQUACER_PCI_SEG1_BUSNUM_RANGE // RangeLength - # of 
> Busses
>                  )
>  
> -                DWordMemory ( // 32-bit BAR Windows
> +                QWordMemory ( // 32-bit BAR Windows
>                      ResourceProducer, PosDecode,
>                      MinFixed, MaxFixed,
>                      Cacheable, ReadWrite,
>                      0x00000000,                         // Granularity
>                      SYNQUACER_PCI_SEG1_MMIO32_MIN,      // Min Base Address
>                      SYNQUACER_PCI_SEG1_MMIO32_MAX,      // Max Base Address
> -                    0x00000000,                         // Translate
> +                    SYNQUACER_PCI_SEG1_MMIO32_XLATE,    // Translate
>                      SYNQUACER_PCI_SEG1_MMIO32_SIZE      // Length
>                  )
>  
> diff --git a/Silicon/Socionext/SynQuacer/Include/Platform/Pcie.h 
> b/Silicon/Socionext/SynQuacer/Include/Platform/Pcie.h
> index 950cece13e81..798f59db2a94 100644
> --- a/Silicon/Socionext/SynQuacer/Include/Platform/Pcie.h
> +++ b/Silicon/Socionext/SynQuacer/Include/Platform/Pcie.h
> @@ -34,6 +34,7 @@
>  #define SYNQUACER_PCI_SEG0_MMIO32_MIN       0x68000000
>  #define SYNQUACER_PCI_SEG0_MMIO32_MAX       0x6fffffff
>  #define SYNQUACER_PCI_SEG0_MMIO32_SIZE      0x08000000
> +#define SYNQUACER_PCI_SEG0_MMIO32_XLATE     0x0
>  
>  #define SYNQUACER_PCI_SEG0_MMIO64_MIN       0x3e00000000
>  #define SYNQUACER_PCI_SEG0_MMIO64_MAX       0x3effffffff
> @@ -57,6 +58,7 @@
>  #define SYNQUACER_PCI_SEG1_MMIO32_MIN       0x78000000
>  #define SYNQUACER_PCI_SEG1_MMIO32_MAX       0x7fffffff
>  #define SYNQUACER_PCI_SEG1_MMIO32_SIZE      0x08000000
> +#define SYNQUACER_PCI_SEG1_MMIO32_XLATE     0x0
>  
>  #define SYNQUACER_PCI_SEG1_MMIO64_MIN       0x3f00000000
>  #define SYNQUACER_PCI_SEG1_MMIO64_MAX       0x3fffffffff
> diff --git 
> a/Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLib.c
>  
> b/Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLib.c
> index 341939876bd3..7c096f0801dd 100644
> --- 
> a/Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLib.c
> +++ 
> b/Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLib.c
> @@ -107,7 +107,8 @@ PCI_ROOT_BRIDGE mPciRootBridges[] = {
>        SYNQUACER_PCI_SEG0_PORTIO_MAX,
>        MAX_UINT64 - SYNQUACER_PCI_SEG0_PORTIO_OFFSET + 1 },   // Io
>      { SYNQUACER_PCI_SEG0_MMIO32_MIN,
> -      SYNQUACER_PCI_SEG0_MMIO32_MAX },      // Mem
> +      SYNQUACER_PCI_SEG0_MMIO32_MAX,
> +      MAX_UINT64 - SYNQUACER_PCI_SEG0_MMIO32_XLATE + 1 },    // Mem

So, this had me scratching my head for a second.
I may get pickier about requring explicitly initializing the
Translation field in future, but for this patch:
Reviewed-by: Leif Lindholm <[email protected]>

>      { SYNQUACER_PCI_SEG0_MMIO64_MIN,
>        SYNQUACER_PCI_SEG0_MMIO64_MAX },      // MemAbove4G
>      { MAX_UINT64, 0x0 },                    // PMem
> @@ -127,7 +128,8 @@ PCI_ROOT_BRIDGE mPciRootBridges[] = {
>        SYNQUACER_PCI_SEG1_PORTIO_MAX,
>        MAX_UINT64 - SYNQUACER_PCI_SEG1_PORTIO_OFFSET + 1 },   // Io
>      { SYNQUACER_PCI_SEG1_MMIO32_MIN,
> -      SYNQUACER_PCI_SEG1_MMIO32_MAX },      // Mem
> +      SYNQUACER_PCI_SEG1_MMIO32_MAX,
> +      MAX_UINT64 - SYNQUACER_PCI_SEG1_MMIO32_XLATE + 1 },    // Mem
>      { SYNQUACER_PCI_SEG1_MMIO64_MIN,
>        SYNQUACER_PCI_SEG1_MMIO64_MAX },      // MemAbove4G
>      { MAX_UINT64, 0x0 },                    // PMem
> diff --git 
> a/Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLibConstructor.c
>  
> b/Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLibConstructor.c
> index 227f9a725ce8..75a663e974e1 100644
> --- 
> a/Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLibConstructor.c
> +++ 
> b/Silicon/Socionext/SynQuacer/Library/SynQuacerPciHostBridgeLib/SynQuacerPciHostBridgeLibConstructor.c
> @@ -322,7 +322,7 @@ PciInitControllerPost (
>  
>    // Region 0: MMIO32 range
>    ConfigureWindow (DbiBase, 0,
> -    RootBridge->Mem.Base,
> +    RootBridge->Mem.Base - RootBridge->Mem.Translation,
>      RootBridge->Mem.Base,
>      RootBridge->Mem.Limit - RootBridge->Mem.Base + 1,
>      IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_MEM |
> -- 
> 2.17.1
> 
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