From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?ISO-8859-1?Q?=C9meric_Maschino?= <emeric.maschino@gmail.com>
Subject: Re: 3D OpenGL applications eat CPU ressources
Date: Sun, 7 Feb 2010 19:44:40 +0100
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2010/2/7 =C9meric Maschino <emeric.maschino@gmail.com>:
> I've no idea about sideband addressing. Is there a way to check
> whether it's enabled or not? And is there a way to disable it?

lspci -vv gives:

80:00.0 VGA compatible controller: ATI Technologies Inc Radeon R300 NG
[FireGL X1] (rev 80) (prog-if 00 [VGA controller])
	Subsystem: ATI Technologies Inc Device 0152
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping+ SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=3Dmedium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 192 (2000ns min), Cache Line Size: 128 bytes
	Interrupt: pin A routed to IRQ 61
	Region 0: Memory at d0000000 (32-bit, prefetchable) [size=3D128M]
	Region 1: I/O ports at 8000 [size=3D256]
	Region 2: Memory at d8030000 (32-bit, non-prefetchable) [size=3D64K]
	Expansion ROM at d8000000 [disabled] [size=3D128K]
	Capabilities: [58] AGP version 2.0
		Status: RQ=3D80 Iso- ArqSz=3D0 Cal=3D0 SBA+ ITACoh- GART64- HTrans- 64bit-
FW+ AGP3- Rate=3Dx1,x2,x4
		Command: RQ=3D16 ArqSz=3D0 Cal=3D0 SBA+ AGP+ GART64- 64bit- FW- Rate=3Dx4
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=3D0mA PME(D0-,D1-,D2-,D3hot-,D3col=
d-)
		Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME-

80:00.1 Display controller: ATI Technologies Inc Radeon R300 [FireGL
X1] (Secondary) (rev 80)
	Subsystem: ATI Technologies Inc Device 0153
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping+ SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=3Dmedium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 192 (2000ns min), Cache Line Size: 128 bytes
	Region 0: Memory at c8000000 (32-bit, prefetchable) [size=3D128M]
	Region 1: Memory at d8020000 (32-bit, non-prefetchable) [size=3D64K]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=3D0mA PME(D0-,D1-,D2-,D3hot-,D3col=
d-)
		Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME-

I imagine that SBA+ stands for SideBand Addressing enabled, right? I
still don't know how to disable it.

=C9meric

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