Re: [PATCH] MdePkg/PciExpress21.h: Fix the PCIe industry standard registers

["Javeed, Ashraf" <ashraf.javeed@intel.com>]

These new macros definitions define PCI attributes which exist in the PCI Express Base Specification Revision 2.1; hence placing this in the PciExpress21.h align with the specification revision.

Thanks
Ashraf

> -----Original Message-----
> From: Gao, Liming
> Sent: Thursday, July 25, 2019 8:05 PM
> To: Javeed, Ashraf <ashraf.javeed@intel.com>; devel@edk2.groups.io
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Ni, Ray
> <ray.ni@intel.com>; Wu, Hao A <hao.a.wu@intel.com>
> Subject: RE: [PATCH] MdePkg/PciExpress21.h: Fix the PCIe industry standard
> registers
> 
> I agree the structure update in PciExpress21.h. I also see some new macro
> definitions. Can they be added to PciExpress40.h, for example:
> 
> #define PCIE_MAX_PAYLOAD_SIZE_128B   0
> #define PCIE_MAX_PAYLOAD_SIZE_256B   1
> #define PCIE_MAX_PAYLOAD_SIZE_512B   2
> #define PCIE_MAX_PAYLOAD_SIZE_1024B  3
> #define PCIE_MAX_PAYLOAD_SIZE_2048B  4
> #define PCIE_MAX_PAYLOAD_SIZE_4096B  5
> #define PCIE_MAX_PAYLOAD_SIZE_RVSD1  6
> #define PCIE_MAX_PAYLOAD_SIZE_RVSD2  7
> 
> #define PCIE_MAX_READ_REQ_SIZE_128B    0
> #define PCIE_MAX_READ_REQ_SIZE_256B    1
> #define PCIE_MAX_READ_REQ_SIZE_512B    2
> #define PCIE_MAX_READ_REQ_SIZE_1024B   3
> #define PCIE_MAX_READ_REQ_SIZE_2048B   4
> #define PCIE_MAX_READ_REQ_SIZE_4096B   5
> #define PCIE_MAX_READ_REQ_SIZE_RVSD1   6
> #define PCIE_MAX_READ_REQ_SIZE_RVSD2   7
> 
> Thanks
> Liming
> > -----Original Message-----
> > From: Javeed, Ashraf
> > Sent: Thursday, July 25, 2019 10:24 PM
> > To: Gao, Liming <liming.gao@intel.com>; devel@edk2.groups.io
> > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Ni, Ray
> > <ray.ni@intel.com>; Wu, Hao A <hao.a.wu@intel.com>
> > Subject: RE: [PATCH] MdePkg/PciExpress21.h: Fix the PCIe industry
> > standard registers
> >
> > Liming,
> > The existing structure are extended in PCI Express Base Specification Revision
> 4; hence I have made the change in PciExpress21.h.
> >
> > Thanks
> > Ashraf
> >
> > > -----Original Message-----
> > > From: Gao, Liming
> > > Sent: Thursday, July 25, 2019 7:35 PM
> > > To: Javeed, Ashraf <ashraf.javeed@intel.com>; devel@edk2.groups.io
> > > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Ni, Ray
> > > <ray.ni@intel.com>; Wu, Hao A <hao.a.wu@intel.com>
> > > Subject: RE: [PATCH] MdePkg/PciExpress21.h: Fix the PCIe industry
> > > standard registers
> > >
> > > Ashraf:
> > >   So, those update base on PCI Express Base Specification Revision
> > > 4.0. If new definitions are in version 4.0, they can be added into
> > > PciExpress40.h. If the existing structure is extended, they can be kept in
> PciExpress21.h.
> > >
> > > Thanks
> > > Liming
> > > > -----Original Message-----
> > > > From: Javeed, Ashraf
> > > > Sent: Monday, July 22, 2019 2:26 PM
> > > > To: devel@edk2.groups.io
> > > > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Gao, Liming
> > > > <liming.gao@intel.com>; Ni, Ray <ray.ni@intel.com>; Wu, Hao A
> > > > <hao.a.wu@intel.com>
> > > > Subject: [PATCH] MdePkg/PciExpress21.h: Fix the PCIe industry
> > > > standard registers
> > > >
> > > > BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2007
> > > > The PCIe Device capability register #2
> > > > (PCI_REG_PCIE_DEVICE_CAPABILITY2)  needs to be upgraded for the
> > > > PCI features like - LN system CLS, 10b Tag  completer/requester
> > > > register fields, emergency power reduction support  and
> > > > initialization requirement, and
> > > FRS support.
> > > >
> > > > The PCIe Device Control register #2 (PCI_REG_PCIE_DEVICE_CONTROL2)
> > > > needs  to be upgraded for the - emergency power reduction request
> > > > enabling and  also the 10b Extended Tag enabling.
> > > >
> > > > Needs macro definitions for all the ranges of Maximum Payload
> > > > Sizes and  Maximum Read Request Sizes defined
> > > >
> > > > Needs macro definitions for all the ranges of Completion Timeout
> > > > range needs to be defined.
> > > >
> > > > Signed-off-by: Ashraf Javeed <ashraf.javeed@intel.com>
> > > > Cc: Michael D Kinney <michael.d.kinney@intel.com>
> > > > Cc: Liming Gao <liming.gao@intel.com>
> > > > Cc: Ray Ni <ray.ni@intel.com>
> > > > Cc: Hao A Wu <hao.a.wu@intel.com>
> > > > ---
> > > >  MdePkg/Include/IndustryStandard/PciExpress21.h | 39
> > > > ++++++++++++++++++++++++++++++++++++---
> > > >  1 file changed, 36 insertions(+), 3 deletions(-)
> > > >
> > > > diff --git a/MdePkg/Include/IndustryStandard/PciExpress21.h
> > > > b/MdePkg/Include/IndustryStandard/PciExpress21.h
> > > > index d4003de74c..e652e77a1e 100644
> > > > --- a/MdePkg/Include/IndustryStandard/PciExpress21.h
> > > > +++ b/MdePkg/Include/IndustryStandard/PciExpress21.h
> > > > @@ -91,6 +91,24 @@ typedef union {
> > > >    UINT16   Uint16;
> > > >  } PCI_REG_PCIE_DEVICE_CONTROL;
> > > >
> > > > +#define PCIE_MAX_PAYLOAD_SIZE_128B   0
> > > > +#define PCIE_MAX_PAYLOAD_SIZE_256B   1
> > > > +#define PCIE_MAX_PAYLOAD_SIZE_512B   2
> > > > +#define PCIE_MAX_PAYLOAD_SIZE_1024B  3 #define
> > > > +PCIE_MAX_PAYLOAD_SIZE_2048B  4 #define
> > > PCIE_MAX_PAYLOAD_SIZE_4096B  5
> > > > +#define PCIE_MAX_PAYLOAD_SIZE_RVSD1  6 #define
> > > > +PCIE_MAX_PAYLOAD_SIZE_RVSD2  7
> > > > +
> > > > +#define PCIE_MAX_READ_REQ_SIZE_128B    0
> > > > +#define PCIE_MAX_READ_REQ_SIZE_256B    1
> > > > +#define PCIE_MAX_READ_REQ_SIZE_512B    2
> > > > +#define PCIE_MAX_READ_REQ_SIZE_1024B   3
> > > > +#define PCIE_MAX_READ_REQ_SIZE_2048B   4
> > > > +#define PCIE_MAX_READ_REQ_SIZE_4096B   5
> > > > +#define PCIE_MAX_READ_REQ_SIZE_RVSD1   6
> > > > +#define PCIE_MAX_READ_REQ_SIZE_RVSD2   7
> > > > +
> > > >  typedef union {
> > > >    struct {
> > > >      UINT16 CorrectableError : 1;
> > > > @@ -250,16 +268,30 @@ typedef union {
> > > >      UINT32 NoRoEnabledPrPrPassing : 1;
> > > >      UINT32 LtrMechanism : 1;
> > > >      UINT32 TphCompleter : 2;
> > > > -    UINT32 Reserved : 4;
> > > > +    UINT32 LnSystemCLS : 2;
> > > > +    UINT32 TenBitTagCompleterSupported : 1;
> > > > +    UINT32 TenBitTagRequesterSupported : 1;
> > > >      UINT32 Obff : 2;
> > > >      UINT32 ExtendedFmtField : 1;
> > > >      UINT32 EndEndTlpPrefix : 1;
> > > >      UINT32 MaxEndEndTlpPrefixes : 2;
> > > > -    UINT32 Reserved2 : 8;
> > > > +    UINT32 EmergencyPowerReductionSupported : 2;
> > > > +    UINT32 EmergencyPowerReductionInitializationRequired : 1;
> > > > +    UINT32 Reserved : 4;
> > > > +    UINT32 FrsSupported : 1;
> > > >    } Bits;
> > > >    UINT32   Uint32;
> > > >  } PCI_REG_PCIE_DEVICE_CAPABILITY2;
> > > >
> > > > +#define PCIE_COMPLETION_TIMEOUT_NOT_SUPPORTED           0
> > > > +#define PCIE_COMPLETION_TIMEOUT_RANGE_A_SUPPORTED       1
> > > > +#define PCIE_COMPLETION_TIMEOUT_RANGE_B_SUPPORTED       2
> > > > +#define PCIE_COMPLETION_TIMEOUT_RANGE_A_B_SUPPORTED     3
> > > > +#define PCIE_COMPLETION_TIMEOUT_RANGE_B_C_SUPPORTED     6
> > > > +#define PCIE_COMPLETION_TIMEOUT_RANGE_A_B_C_SUPPORTED   7
> > > > +#define PCIE_COMPLETION_TIMEOUT_RANGE_B_C_D_SUPPORTED   14
> > > > +#define PCIE_COMPLETION_TIMEOUT_RANGE_A_B_C_D_SUPPORTED 15
> > > > +
> > > >  #define PCIE_DEVICE_CAPABILITY_OBFF_MESSAGE BIT0
> > > >  #define PCIE_DEVICE_CAPABILITY_OBFF_WAKE    BIT1
> > > >
> > > > @@ -273,7 +305,8 @@ typedef union {
> > > >      UINT16 IdoRequest : 1;
> > > >      UINT16 IdoCompletion : 1;
> > > >      UINT16 LtrMechanism : 2;
> > > > -    UINT16 Reserved : 2;
> > > > +    UINT16 EmergencyPowerReductionRequest : 1;
> > > > +    UINT16 TenBitTagRequesterEnable : 1;
> > > >      UINT16 Obff : 2;
> > > >      UINT16 EndEndTlpPrefixBlocking : 1;
> > > >    } Bits;
> > > > --
> > > > 2.21.0.windows.1