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Building a custom DSDT for C700 (C776CA)

Oh the Huge Manatee
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Oh the Huge Manatee
Oh the Huge Manatee
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Posted

I have a C776 which is well supported by OSX, except for a few key details that are driving me crazy. Most important to me is sleep/wake... on wake, my fans stop working entirely, leading to a KP pretty quickly. Second, I'd like to be able to use native kexts for my audio device (right now I have custom kexts). Finally, the ability to use native kexts with my trackpad/keyboard would be nice (is that even possible with PS2 devices?).

 

 

When I try to compile my DSDT, here are the warnings and errors I get:

 

./dsdt_fixed.txt   541:			 Method (FRSP, 0, NotSerialized)
Warning  1087 -								^ Not all control paths return a value (FRSP)

./dsdt_fixed.txt  1910:					 Name (_T_0, Zero)
Remark   5110 -		Use of compiler reserved name ^  (_T_0)

./dsdt_fixed.txt  2598:			 Method (_OSC, 5, NotSerialized)
Warning  1076 -								^ Reserved method has too many arguments (_OSC requires 4)

./dsdt_fixed.txt  2609:					 CreateDWordField (BUF1, Local2, CAPB)
Error	4111 -		  Creating a named object in a While loop ^ 

./dsdt_fixed.txt  2614:							 And (CAPB, 0xFFFFFFFC)
Warning  1105 -  Result is not used, operator has no effect ^ 

./dsdt_fixed.txt  7178:					 Method (_GTM, 0, NotSerialized)
Warning  1087 -   Not all control paths return a value ^  (_GTM)

./dsdt_fixed.txt  7178:					 Method (_GTM, 0, NotSerialized)
Warning  1080 -	Reserved method must return a value ^  (_GTM)

./dsdt_fixed.txt  7338:						 Method (_GTF, 0, NotSerialized)
Warning  1087 -	   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7338:						 Method (_GTF, 0, NotSerialized)
Warning  1080 -		Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7406:						 Method (_GTF, 0, NotSerialized)
Warning  1087 -	   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7406:						 Method (_GTF, 0, NotSerialized)
Warning  1080 -		Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7479:					 Method (_GTM, 0, NotSerialized)
Warning  1087 -   Not all control paths return a value ^  (_GTM)

./dsdt_fixed.txt  7479:					 Method (_GTM, 0, NotSerialized)
Warning  1080 -	Reserved method must return a value ^  (_GTM)

./dsdt_fixed.txt  7652:						 Method (_GTF, 0, NotSerialized)
Warning  1087 -	   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7652:						 Method (_GTF, 0, NotSerialized)
Warning  1080 -		Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7720:						 Method (_GTF, 0, NotSerialized)
Warning  1087 -	   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7720:						 Method (_GTF, 0, NotSerialized)
Warning  1080 -		Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7827:					 Method (_GTF, 0, NotSerialized)
Warning  1087 -   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7827:					 Method (_GTF, 0, NotSerialized)
Warning  1080 -	Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7873:					 Method (_GTF, 0, NotSerialized)
Warning  1087 -   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7873:					 Method (_GTF, 0, NotSerialized)
Warning  1080 -	Reserved method must return a value ^  (_GTF)

 

 

I figure the most important thing to fix is the Error:

./dsdt_fixed.txt  2609:					 CreateDWordField (BUF1, Local2, CAPB)
Error	4111 -		  Creating a named object in a While loop ^

 

Here's the offending code from/around line 2609:

Method (_OSC, 5, NotSerialized)
		{
			Store (Arg3, Local0)
			Multiply (Local0, 0x04, Local1)
			Name (BUF1, Buffer (Local1) {})
			Store (Arg4, BUF1)
			Store (Zero, Local1)
			Store (Zero, Local2)
			While (Local0)
			{
				Multiply (Local1, 0x04, Local2)
				CreateDWordField (BUF1, Local2, CAPB)
				If (Arg2)
				{
					If (LEqual (Local1, Zero))
					{
						And (CAPB, 0xFFFFFFFC)
					}
				}
				Else
				{
				}

				Increment (Local1)
				Decrement (Local0)
			}

			Return (BUF1)
		}

 

 

I understand the error - creating that new DWORD is illegal when you're in a loop. But I have no idea how to fix it! Ideas?

  • 4 weeks later...
Oh the Huge Manatee
Oh the Huge Manatee
Posted
  • Author
Posted

Well I've fixed a lot of it. Took care of the error at least, now I'm trying to fix the warnings. All I have lft is

 

Intel ACPI Component Architecture
ASL Optimizing Compiler version 20091112 [Nov 13 2009]
Copyright (C) 2000 - 2009 Intel Corporation
Supports ACPI Specification Revision 4.0

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7342:						 Method (_GTF, 0, NotSerialized)
Warning  1081 -																	   Reserved method must return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7405:						 Method (_GTF, 0, NotSerialized)
Warning  1088 -																	  Not all control paths return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7405:						 Method (_GTF, 0, NotSerialized)
Warning  1081 -																	   Reserved method must return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7477:					 Method (_GTM, 0, NotSerialized)
Warning  1088 -																  Not all control paths return a value ^  (_GTM)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7477:					 Method (_GTM, 0, NotSerialized)
Warning  1081 -																   Reserved method must return a value ^  (_GTM)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7650:						 Method (_GTF, 0, NotSerialized)
Warning  1088 -																	  Not all control paths return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7650:						 Method (_GTF, 0, NotSerialized)
Warning  1081 -																	   Reserved method must return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7718:						 Method (_GTF, 0, NotSerialized)
Warning  1088 -																	  Not all control paths return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7718:						 Method (_GTF, 0, NotSerialized)
Warning  1081 -																	   Reserved method must return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7825:					 Method (_GTF, 0, NotSerialized)
Warning  1088 -																  Not all control paths return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7825:					 Method (_GTF, 0, NotSerialized)
Warning  1081 -																   Reserved method must return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7871:					 Method (_GTF, 0, NotSerialized)
Warning  1088 -																  Not all control paths return a value ^  (_GTF)

/Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl  7871:					 Method (_GTF, 0, NotSerialized)
Warning  1081 -																   Reserved method must return a value ^  (_GTF)

ASL Input:  /Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/dsdt.dsl - 7885 lines, 301109 bytes, 3352 keywords
AML Output: /Users/campbell/Library/Application Support/EvOSoftware/DSDT/DSDTFiles/./dsdt.aml - 32813 bytes, 676 named objects, 2676 executable opcodes

Compilation complete. 0 Errors, 13 Warnings, 0 Remarks, 36 Optimizations

 

Seems like every time I get a "Reserved method must return a value" I also get a "Not all control paths return a value". I think these are redundant warnings.... but any help?

dsdt.zip

  • 1 year later...
imthekuni
imthekuni
Posted
Posted
I have a C776 which is well supported by OSX, except for a few key details that are driving me crazy. Most important to me is sleep/wake... on wake, my fans stop working entirely, leading to a KP pretty quickly. Second, I'd like to be able to use native kexts for my audio device (right now I have custom kexts). Finally, the ability to use native kexts with my trackpad/keyboard would be nice (is that even possible with PS2 devices?).

 

 

When I try to compile my DSDT, here are the warnings and errors I get:

 

./dsdt_fixed.txt   541:			 Method (FRSP, 0, NotSerialized)
Warning  1087 -								^ Not all control paths return a value (FRSP)

./dsdt_fixed.txt  1910:					 Name (_T_0, Zero)
Remark   5110 -		Use of compiler reserved name ^  (_T_0)

./dsdt_fixed.txt  2598:			 Method (_OSC, 5, NotSerialized)
Warning  1076 -								^ Reserved method has too many arguments (_OSC requires 4)

./dsdt_fixed.txt  2609:					 CreateDWordField (BUF1, Local2, CAPB)
Error	4111 -		  Creating a named object in a While loop ^ 

./dsdt_fixed.txt  2614:							 And (CAPB, 0xFFFFFFFC)
Warning  1105 -  Result is not used, operator has no effect ^ 

./dsdt_fixed.txt  7178:					 Method (_GTM, 0, NotSerialized)
Warning  1087 -   Not all control paths return a value ^  (_GTM)

./dsdt_fixed.txt  7178:					 Method (_GTM, 0, NotSerialized)
Warning  1080 -	Reserved method must return a value ^  (_GTM)

./dsdt_fixed.txt  7338:						 Method (_GTF, 0, NotSerialized)
Warning  1087 -	   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7338:						 Method (_GTF, 0, NotSerialized)
Warning  1080 -		Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7406:						 Method (_GTF, 0, NotSerialized)
Warning  1087 -	   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7406:						 Method (_GTF, 0, NotSerialized)
Warning  1080 -		Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7479:					 Method (_GTM, 0, NotSerialized)
Warning  1087 -   Not all control paths return a value ^  (_GTM)

./dsdt_fixed.txt  7479:					 Method (_GTM, 0, NotSerialized)
Warning  1080 -	Reserved method must return a value ^  (_GTM)

./dsdt_fixed.txt  7652:						 Method (_GTF, 0, NotSerialized)
Warning  1087 -	   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7652:						 Method (_GTF, 0, NotSerialized)
Warning  1080 -		Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7720:						 Method (_GTF, 0, NotSerialized)
Warning  1087 -	   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7720:						 Method (_GTF, 0, NotSerialized)
Warning  1080 -		Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7827:					 Method (_GTF, 0, NotSerialized)
Warning  1087 -   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7827:					 Method (_GTF, 0, NotSerialized)
Warning  1080 -	Reserved method must return a value ^  (_GTF)

./dsdt_fixed.txt  7873:					 Method (_GTF, 0, NotSerialized)
Warning  1087 -   Not all control paths return a value ^  (_GTF)

./dsdt_fixed.txt  7873:					 Method (_GTF, 0, NotSerialized)
Warning  1080 -	Reserved method must return a value ^  (_GTF)

 

 

I figure the most important thing to fix is the Error:

./dsdt_fixed.txt  2609:					 CreateDWordField (BUF1, Local2, CAPB)
Error	4111 -		  Creating a named object in a While loop ^

 

Here's the offending code from/around line 2609:

Method (_OSC, 5, NotSerialized)
		{
			Store (Arg3, Local0)
			Multiply (Local0, 0x04, Local1)
			Name (BUF1, Buffer (Local1) {})
			Store (Arg4, BUF1)
			Store (Zero, Local1)
			Store (Zero, Local2)
			While (Local0)
			{
				Multiply (Local1, 0x04, Local2)
				CreateDWordField (BUF1, Local2, CAPB)
				If (Arg2)
				{
					If (LEqual (Local1, Zero))
					{
						And (CAPB, 0xFFFFFFFC)
					}
				}
				Else
				{
				}

				Increment (Local1)
				Decrement (Local0)
			}

			Return (BUF1)
		}

 

 

I understand the error - creating that new DWORD is illegal when you're in a loop. But I have no idea how to fix it! Ideas?

 

Is there any way you could PM your solution to this problem!? its driving me nuts. thanks.

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