Merge branch 'main' into vmm

2026-06-17 12:50:00 +10:00 · 2021-10-11 16:50:35 -06:00
parent ee15a55876 82fe98a93c
commit 1d336f9dcf
10 changed files with 228 additions and 1 deletions
@@ -0,0 +1,103 @@
+/* Requests power off of dGPU in MacBookPro8,2/3 (TS2 hardware failure)
+ * Main goal is to ensure power draw from the dGPU is reduced as
+ * much as possible to simulate a hardware demux without actual
+ * hardware modifications.
+ *
+ * Notes:
+ *       - SSDT must be used in conjuction with '_INI' to 'XINI' patch
+ *         to reroute PCI0 initialization.
+ * 
+ *       - AMD drivers in macOS may still attempt to attach and kernel
+ *         panic. Disable the dGPU with class-code/device-id spoof or
+ *         with '-wegnoegpu'.
+ *
+ *       - dGPU will reactivate with sleep-wake, additional process
+ *         is needed to disable the dGPU. 
+ *         - ie. AMDGPUWakeHandler.kext for macOS
+ *
+ * Ref:
+ *       - https://www.tonymacx86.com/threads/help-macbook-pro-disable-radeon-gpu-via-dsdt.164458/
+ *       - https://github.com/blackgate/AMDGPUWakeHandler
+ *       - https://help.ubuntu.com/community/MacBookPro8-2/Raring
+ */
+DefinitionBlock ("", "SSDT", 2, "DRTNIA", "dGPU_OFF", 0x00001000)
+{
+    External (_SB_.PCI0, DeviceObj)
+    External (OSYS)
+
+    Scope (_SB.PCI0)
+    {
+        OperationRegion (IOGP, SystemIO, 0x0700, 0x51)
+        Field (IOGP, ByteAcc, NoLock, Preserve)
+        {
+            Offset (0x10), 
+            P710,   8, 
+            Offset (0x28), 
+            P728,   8, 
+            Offset (0x40), 
+            P740,   8, 
+            Offset (0x50), 
+            P750,   8
+        }
+
+        Method (_INI, 0, NotSerialized)  // _INI: Initialize
+        {
+            Store (0x07D0, OSYS)
+            If (CondRefOf (\_OSI, Local0))
+            {
+                If (_OSI ("Darwin"))
+                {
+                    Store (0x2710, OSYS)
+                }
+
+                If (\_OSI ("Linux"))
+                {
+                    Store (0x03E8, OSYS)
+                }
+
+                If (\_OSI ("Windows 2001"))
+                {
+                    Store (0x07D1, OSYS)
+                }
+
+                If (\_OSI ("Windows 2001 SP1"))
+                {
+                    Store (0x07D1, OSYS)
+                }
+
+                If (\_OSI ("Windows 2001 SP2"))
+                {
+                    Store (0x07D2, OSYS)
+                }
+
+                If (\_OSI ("Windows 2006"))
+                {
+                    Store (0x07D6, OSYS)
+                }
+
+                If (\_OSI ("Windows 2007"))
+                {
+                    Store (0x07D7, OSYS)
+                }
+
+                If (\_OSI ("Windows 2008"))
+                {
+                    Store (0x07D8, OSYS)
+                }
+
+                If (\_OSI ("Windows 2009"))
+                {
+                    Store (0x07D9, OSYS)
+                }
+            }
+            
+            // Disables dGPU
+            Store ("Requesting dGPU power off", Debug)
+            P728 = One  // Switch select
+            P710 = 0x02 // Switch display
+            P740 = 0x02 // Switch DDC
+            P750 = Zero // Power down discrete graphics
+        }
+    }
+}
+
@@ -31,6 +31,14 @@
 				<key>Path</key>
 				<string>SSDT-PCI.aml</string>
 			</dict>
+			<dict>
+				<key>Enabled</key>
+				<false/>
+				<key>Comment</key>
+				<string>Requests power off of dGPU for Sandy Bridge MacBook Pros</string>
+				<key>Path</key>
+				<string>SSDT-DGPU.aml</string>
+			</dict>
 		</array>
 		<key>Delete</key>
 		<array/>
@@ -156,6 +164,36 @@
 				<key>TableSignature</key>
 				<data>RFNEVA==</data>
 			</dict>
+			<dict>
+				<key>Base</key>
+				<string>\_SB.PCI0</string>
+				<key>BaseSkip</key>
+				<integer>0</integer>
+				<key>Comment</key>
+				<string>_INI to XINI</string>
+				<key>Count</key>
+				<integer>1</integer>
+				<key>Enabled</key>
+				<false/>
+				<key>Find</key>
+				<data>X0lOSQ==</data>
+				<key>Limit</key>
+				<integer>0</integer>
+				<key>Mask</key>
+				<data></data>
+				<key>OemTableId</key>
+				<data></data>
+				<key>Replace</key>
+				<data>WElOSQ==</data>
+				<key>ReplaceMask</key>
+				<data></data>
+				<key>Skip</key>
+				<integer>0</integer>
+				<key>TableLength</key>
+				<integer>0</integer>
+				<key>TableSignature</key>
+				<data>RFNEVA==</data>
+			</dict>
 		</array>
 		<key>Quirks</key>
 		<dict>
@@ -1055,6 +1093,24 @@
 				<key>PlistPath</key>
 				<string>Contents/Info.plist</string>
 			</dict>
+			<dict>
+				<key>Arch</key>
+				<string>x86_64</string>
+				<key>BundlePath</key>
+				<string>AMDGPUWakeHandler.kext</string>
+				<key>Comment</key>
+				<string>Force disable dGPU on wake</string>
+				<key>Enabled</key>
+				<false/>
+				<key>ExecutablePath</key>
+				<string>Contents/MacOS/AMDGPUWakeHandler</string>
+				<key>MaxKernel</key>
+				<string></string>
+				<key>MinKernel</key>
+				<string></string>
+				<key>PlistPath</key>
+				<string>Contents/Info.plist</string>
+			</dict>
 		</array>
 		<key>Block</key>
 		<array/>