Changeset 89862 in vbox for trunk/src/VBox/Devices/Audio

Timestamp:

Jun 23, 2021 2:28:25 PM (4 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

145319

Message:

DevHda: Do LPIB updates more often. Experimental code for doing DMA work on LPIB read (disabled). [build fix] bugref:9890

File:

• trunk/src/VBox/Devices/Audio/DevHdaStream.cpp (modified) (2 diffs)

trunk/src/VBox/Devices/Audio/DevHdaStream.cpp

@@ -1077 +1077 @@
 }
 
+
+#if defined(IN_RING3) || defined(VBOX_HDA_WITH_ON_REG_ACCESS_DMA)
 /**
  * Updates an HDA stream's current read or write buffer position (depending on the stream type) by
@@ -1096 +1098 @@
         {
             uint32_t uNewLpid = HDA_STREAM_REG(pThis, LPIB, pStreamShared->u8SD) + cbToAdd;
-#if 1 /** @todo r=bird: this is wrong according to the spec */
+# if 1 /** @todo r=bird: this is wrong according to the spec */
             uNewLpid %= uCBL;
-#else
+# else
             /* The spec says it goes to CBL then wraps arpimd to 1, not back to zero. See 3.3.37.  */
             if (uNewLpid > uCBL)
                 uNewLpid %= uCBL;
-#endif
+# endif
             hdaStreamSetPositionAbs(pStreamShared, pDevIns, pThis, uNewLpid);
         }
     }
 }
+#endif /* IN_RING3 || VBOX_HDA_WITH_ON_REG_ACCESS_DMA */
 
 #ifdef IN_RING3