implement pcicfg device availability check for msr.sys

rdementi · rdementi · commit 480ba2ae5029 · 2025-04-04T10:40:10.000+02:00
Change-Id: Ic1bd010ff9ed5a21ad1d813aa84b3d964754c030
diff --git a/src/pci.cpp b/src/pci.cpp
@@ -67,10 +67,11 @@ bool PciHandle::exists(uint32 groupnr_, uint32 bus_, uint32 device_, uint32 func
     HANDLE tempHandle = openMSRDriver();
     if (tempHandle != INVALID_HANDLE_VALUE)
     {
-        // TODO: check device availability
-
         CloseHandle(tempHandle);
-        return true;
+
+        PciHandle tempHandle(groupnr_, bus_, device_, function_);
+        uint32 value = 0;
+        return tempHandle.read32(0, &value) == sizeof(uint32);
     }
 
     if (groupnr_ != 0)

Original file line number	Diff line number	Diff line change
`@@ -67,10 +67,11 @@ bool PciHandle::exists(uint32 groupnr_, uint32 bus_, uint32 device_, uint32 func`
`67`	`67`	`HANDLE tempHandle = openMSRDriver();`
`68`	`68`	`if (tempHandle != INVALID_HANDLE_VALUE)`
`69`	`69`	`{`
`70`		`- // TODO: check device availability`
`71`		`-`
`72`	`70`	`CloseHandle(tempHandle);`
`73`		`- return true;`
	`71`	`+`
	`72`	`+ PciHandle tempHandle(groupnr_, bus_, device_, function_);`
	`73`	`+ uint32 value = 0;`
	`74`	`+ return tempHandle.read32(0, &value) == sizeof(uint32);`
`74`	`75`	`}`
`75`	`76`
`76`	`77`	`if (groupnr_ != 0)`