drivers: hv: dxgkrnl: Implement various WDDM ioctls

Implement various WDDM IOCTLs.

- IOCTLs to handle GPU virtual addressing (VA):
   LX_DXRESERVEGPUVIRTUALADDRESS (D3DKMTReserveGpuVertualAddress)
   LX_DXFREEGPUVIRTUALADDRESS (D3DKMTFreeGpuVertualAddress)
   LX_DXMAPGPUVIRTUALADDRESS (D3DKMTMapGpuVertualAddress)
   LX_DXUPDATEGPUVIRTUALADDRESS (D3DKMTUpdateGpuVertualAddress)

   WDDM supports a compute device to use GPU virtual addresses when
   accessing allocation memory. A GPU VA could be reserved or mapped
   to a GPU allocation. The video memory manager on the host updates
   GPU page tables for the virtual addresses.

- IOCTLs to manage residency of GPU accessing allocations:
   LX_DXMAKERESIDENT (D3DKMTMakeResident)
   LX_DXEVICT (D3DKMTEvict)

   An allocation is resident when GPU is setup to access it. The
   current WDDM design does not support on demand GPU page faulting.
   An allocation must be resident (be in the local device memory or
   in non-pageable system memory) before GPU is allowed to access it.

- IOCTLs to offer/reclaim alloctions:
   LX_DXOFFERALLOCATIONS {D3DKMTOfferAllocations)
   LX_DXRECLAIMALLOCATIONS2 (D3DKMTReclaimAllocations)

   When a user mode driver does not need an allocation, it can
   "offer" it. This means that the allocation is not in use and it
   local device memory could be reclaimed and given to another allocation.
   When the allocation is again needed, the caller can "reclaim" the
   allocations. If the allocation is still in the device local memory,
   the reclaim operation succeeds. If not the called must restore the
   content of the allocation before it can be used by the device.

- LX_DXESCAPE (D3DKMTEscape)
  This IOCTL is used to send/receive private data between user mode
  driver and kernel mode driver. This is an extension of the WDDM APIs.

- LX_DXGETDEVICESTATE (D3DKMTGetDeviceState)
  The IOCTL is used to get the current execution state of the dxgdevice
  object.

- LX_DXMARKDEVICEASERROR (D3DKMTMarkDeviceAsError)
  The IOCTL is used to bring the dxgdevice object to the error state.
  Subsequent calls to use the device object will fail.

- LX_DXQUERYSTATISTICS (D3DKMTQuerystatistics)
  The IOCTL is used to query various statistics from the compute device
  on the host.

- IOCTLs to deal with execution context priorities
  LX_DXGETCONTEXTINPROCESSSCHEDULINGPRIORITY
  LX_DXGETCONTEXTSCHEDULINGPRIORITY
  LX_DXSETCONTEXTINPROCESSSCHEDULINGPRIORITY
  LX_DXSETCONTEXTSCHEDULINGPRIORITY

Signed-off-by: Iouri Tarassov <[email protected]>

Author: Iouri Tarassov

drivers/hv/dxgkrnl/dxgkrnl.h

@@ -943,5 +943,7 @@ int dxgvmb_send_get_stdalloc_data(struct dxgdevice *device,
 int dxgvmb_send_query_statistics(struct dxgprocess *process,
 				 struct dxgadapter *adapter,
 				 struct d3dkmt_querystatistics *args);
+int dxgvmb_send_share_object_with_host(struct dxgprocess *process,
+				struct d3dkmt_shareobjectwithhost *args);
 
 #endif