Re: [PATCH qxl-wddm-dod v2 06/25] Add type enum to qxl/vga device

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> 
> This patch adds type enum to the qxl/vga device class.
> 
> Fixed misspelling: HwDeviceInterface
> Fixed misspelling: GetDxgkInterface
> 
> Signed-off-by: Sameeh Jubran <sameeh@xxxxxxxxxx>

The GetType and its usage was to avoid the usage of virtual
table. Now that we checked that virtual tables are safe to use
from no-paged code it's much better to use virtual functions.

Ok for the typo.

> ---
>  qxldod/QxlDod.cpp | 10 ++++++----
>  qxldod/QxlDod.h   | 25 +++++++++++++++++--------
>  2 files changed, 23 insertions(+), 12 deletions(-)
> 
> diff --git a/qxldod/QxlDod.cpp b/qxldod/QxlDod.cpp
> index dd68693..1c6e477 100755
> --- a/qxldod/QxlDod.cpp
> +++ b/qxldod/QxlDod.cpp
> @@ -2328,7 +2328,7 @@ VOID BltBits (
>      }
>  }
>  
> -VgaDevice::VgaDevice(_In_ QxlDod* pQxlDod)
> +VgaDevice::VgaDevice(_In_ QxlDod* pQxlDod) : HwDeviceInterface(pQxlDod)
>  {
>      m_pQxlDod = pQxlDod;
>      m_ModeInfo = NULL;
> @@ -2336,6 +2336,7 @@ VgaDevice::VgaDevice(_In_ QxlDod* pQxlDod)
>      m_ModeNumbers = NULL;
>      m_CurrentMode = 0;
>      m_Id = 0;
> +    m_type = VGA_DEVICE;
>  }
>  
>  VgaDevice::~VgaDevice(void)
> @@ -2945,7 +2946,7 @@ NTSTATUS VgaDevice::Escape(_In_ CONST DXGKARG_ESCAPE*
> pEscap)
>      return STATUS_NOT_IMPLEMENTED;
>  }
>  
> -QxlDevice::QxlDevice(_In_ QxlDod* pQxlDod)
> +QxlDevice::QxlDevice(_In_ QxlDod* pQxlDod) : HwDeviceInterface(pQxlDod)
>  {
>      m_pQxlDod = pQxlDod;
>      m_ModeInfo = NULL;
> @@ -2955,6 +2956,7 @@ QxlDevice::QxlDevice(_In_ QxlDod* pQxlDod)
>      m_CustomMode = 0;
>      m_FreeOutputs = 0;
>      m_Pending = 0;
> +    m_type = QXL_DEVICE;
>  }
>  
>  QxlDevice::~QxlDevice(void)
> @@ -3181,7 +3183,7 @@ NTSTATUS QxlDevice::SetPowerState(_In_
> DEVICE_POWER_STATE DevicePowerState, DXGK
>  NTSTATUS QxlDevice::HWInit(PCM_RESOURCE_LIST pResList,
>  DXGK_DISPLAY_INFORMATION* pDispInfo)
>  {
>      DbgPrint(TRACE_LEVEL_VERBOSE, ("---> %s\n", __FUNCTION__));
> -    PDXGKRNL_INTERFACE pDxgkInterface = m_pQxlDod->GetDxgkInterrface();
> +    PDXGKRNL_INTERFACE pDxgkInterface = m_pQxlDod->GetDxgkInterface();
>      UINT pci_range = QXL_RAM_RANGE_INDEX;
>      for (ULONG i = 0; i < pResList->Count; ++i)
>      {
> @@ -3358,7 +3360,7 @@ void QxlDevice::QxlClose()
>  
>  void QxlDevice::UnmapMemory(void)
>  {
> -    PDXGKRNL_INTERFACE pDxgkInterface = m_pQxlDod->GetDxgkInterrface();
> +    PDXGKRNL_INTERFACE pDxgkInterface = m_pQxlDod->GetDxgkInterface();
>      if (m_IoMapped && m_IoBase)
>      {
>          pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle,
>          &m_IoBase);
> diff --git a/qxldod/QxlDod.h b/qxldod/QxlDod.h
> index d3d9202..ab44259 100755
> --- a/qxldod/QxlDod.h
> +++ b/qxldod/QxlDod.h
> @@ -212,9 +212,16 @@ typedef struct _CURRENT_BDD_MODE
>  
>  class QxlDod;
>  
> -class HwDeviceIntrface {
> -public:
> -    virtual ~HwDeviceIntrface() {;}
> +typedef enum {
> +    QXL_DEVICE,
> +    VGA_DEVICE,
> +    INVALID_DEVICE,
> +}WIN_QXL_DEVICE_TYPE;
> +
> +class HwDeviceInterface {
> +public:
> +    HwDeviceInterface(_In_ QxlDod* pQxlDod) {m_type = INVALID_DEVICE;}
> +    virtual ~HwDeviceInterface() {;}
>      virtual NTSTATUS QueryCurrentMode(PVIDEO_MODE RequestedMode) = 0;
>      virtual NTSTATUS SetCurrentMode(ULONG Mode) = 0;
>      virtual NTSTATUS GetCurrentMode(ULONG* Mode) = 0;
> @@ -258,10 +265,11 @@ protected:
>      USHORT m_CurrentMode;
>      USHORT m_CustomMode;
>      ULONG  m_Id;
> +    WIN_QXL_DEVICE_TYPE m_type;
>  };
>  
>  class VgaDevice  :
> -    public HwDeviceIntrface
> +    public HwDeviceInterface
>  {
>  public:
>      VgaDevice(_In_ QxlDod* pQxlDod);
> @@ -434,7 +442,7 @@ typedef struct DpcCbContext {
>  #define ALIGN(a, b) (((a) + ((b) - 1)) & ~((b) - 1))
>  
>  class QxlDevice  :
> -    public HwDeviceIntrface
> +    public HwDeviceInterface
>  {
>  public:
>      QxlDevice(_In_ QxlDod* pQxlDod);
> @@ -591,9 +599,10 @@ private:
>  
>      D3DDDI_VIDEO_PRESENT_SOURCE_ID m_SystemDisplaySourceId;
>      DXGKARG_SETPOINTERSHAPE m_PointerShape;
> -    HwDeviceIntrface* m_pHWDevice;
> +
> +    HwDeviceInterface* m_pHWDevice;
>      DWORD m_VgaCompatible;
> -    DWORD m_PointerCaps;
> +    DWORD m_PointerCaps;
>  public:
>      QxlDod(_In_ DEVICE_OBJECT* pPhysicalDeviceObject);
>      ~QxlDod(void);
> @@ -686,7 +695,7 @@ public:
>                                   _In_
>                                   UINT
>                                   SourceStride,
>                                   _In_
>                                   INT
>                                   PositionX,
>                                   _In_
>                                   INT
>                                   PositionY);
> -    PDXGKRNL_INTERFACE GetDxgkInterrface(void) { return &m_DxgkInterface;}
> +    PDXGKRNL_INTERFACE GetDxgkInterface(void) { return &m_DxgkInterface;}
>  private:
>      VOID CleanUp(VOID);
>      NTSTATUS CheckHardware();

Frediano
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