1. Changed device detect method to use ATA/ATAPI device signature;

2. Enhancements to better support SATA CDROM;
3. Fixed UDMA operation for buffer above 4G memory issue;
4. Fixed maximal block setting for ATAPI read sector operation to comply with spec;
5. Some minor fixes.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1739 6f19259b-4bc3-4df7-8a09-765794883524

EdkModulePkg/Bus/Pci/IdeBus/Dxe/idedata.h

@@ -76,6 +76,16 @@ typedef enum {
   IdeUnknown
 } IDE_DEVICE_TYPE;
 
+typedef enum {
+  SenseNoSenseKey,
+  SenseDeviceNotReadyNoRetry,
+  SenseDeviceNotReadyNeedRetry,
+  SenseNoMedia,
+  SenseMediaChange,
+  SenseMediaError,
+  SenseOtherSense
+} SENSE_RESULT;
+
 //
 // IDE Registers
 //
@@ -234,6 +244,11 @@ typedef struct {
 //
 #define ATAPILONGTIMEOUT  5000  
 
+//
+// 10 seconds
+//
+#define ATASMARTTIMEOUT   10000
+
 //
 // ATA Commands Code
 //