Changeset 84913 in vbox for trunk/src/VBox/Devices

Timestamp:

Jun 23, 2020 9:27:37 AM (5 years ago)

Author:

vboxsync

Message:

DevDMA: Added an info handler to dump DMA page registers since only some of them belong to a DMA channel.

File:

• trunk/src/VBox/Devices/PC/DevDMA.cpp (modified) (2 diffs)

trunk/src/VBox/Devices/PC/DevDMA.cpp

@@ -983 +983 @@
 }
 
+/** @callback_method_impl{FNDBGFHANDLERDEV} */
+static DECLCALLBACK(void) dmaR3InfoPageReg(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
+{
+    PDMASTATE       pThis = PDMDEVINS_2_DATA(pDevIns, PDMASTATE);
+    NOREF(pszArgs);
+
+    /*
+     * Show page register contents.
+     */
+    for (unsigned i = 0; i < RT_ELEMENTS(pThis->DMAC); i++)
+    {
+        PDMACONTROLLER  pDmac = &pThis->DMAC[i];
+
+        pHlp->pfnPrintf(pHlp, "DMA page registers at %02X:", i == 0 ? 0x80 : 0x88);
+        for (unsigned pg = 0; pg < RT_ELEMENTS(pDmac->au8Page); pg++)
+            pHlp->pfnPrintf(pHlp, " %02X", pDmac->au8Page[pg]);
+
+        pHlp->pfnPrintf(pHlp, "\n");
+    }
+}
+
 /**
  * @interface_method_impl{PDMDEVREG,pfnReset}
@@ -1098 +1119 @@
      */
     PDMDevHlpDBGFInfoRegister(pDevIns, "dmac", "DMA controller info.", dmaR3Info);
+    PDMDevHlpDBGFInfoRegister(pDevIns, "dmapage", "DMA page register info.", dmaR3InfoPageReg);
 
     return VINF_SUCCESS;