Changeset 75585 in vbox for trunk/include

Timestamp:

Nov 19, 2018 6:03:23 PM (6 years ago)

Author:

vboxsync

Message:

VMMDev,PGM: New I/O port for ACKing IRQs and retreiving pending events. This is handled in ring-0/raw-mode and saves a bit of time compared to the ring-3 trip we've been doing for VMMDevReq_AcknowledgeEvents thus far. Requires the start of the VMMDev memory being mapped into R00/RC, the former requires some hacks on linux+windows as RTR0MemObjMapKernelEx is missing some functionality here. bugref:9172

File:

• trunk/include/VBox/VMMDev.h (modified) (2 diffs)

trunk/include/VBox/VMMDev.h

@@ -65 +65 @@
 /** Port for generic request interface (relative offset). */
 #define VMMDEV_PORT_OFF_REQUEST                             0
+/** Port for requests that can be handled w/o going to ring-3 (relative offset).
+ * This works like VMMDevReq_AcknowledgeEvents when read.  */
+#define VMMDEV_PORT_OFF_REQUEST_FAST                        8
 
 
@@ -529 +532 @@
 AssertCompileSize(VMMDevReqHostVersion, 24+16);
 
-/** @name VMMDevReqHostVersion::features
+/** @name VMMDEV_HVF_XXX - VMMDevReqHostVersion::features
  * @{ */
 /** Physical page lists are supported by HGCM. */
-#define VMMDEV_HVF_HGCM_PHYS_PAGE_LIST  RT_BIT(0)
+#define VMMDEV_HVF_HGCM_PHYS_PAGE_LIST      RT_BIT_32(0)
+/** HGCM supports the embedded buffer parameter type. */
+#define VMMDEV_HVF_HGCM_EMBEDDED_BUFFERS    RT_BIT_32(1)
+/** VMMDev supports fast IRQ acknowledgements. */
+#define VMMDEV_HVF_FAST_IRQ_ACK             RT_BIT_32(31)
 /** @} */