From: Mika Westerberg <mika.westerberg@intel.com> To: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Karol Herbst <kherbst@redhat.com>, Bjorn Helgaas <helgaas@kernel.org>, LKML <linux-kernel@vger.kernel.org>, Lyude Paul <lyude@redhat.com>, "Rafael J . Wysocki" <rjw@rjwysocki.net>, Linux PCI <linux-pci@vger.kernel.org>, Linux PM <linux-pm@vger.kernel.org>, dri-devel <dri-devel@lists.freedesktop.org>, nouveau <nouveau@lists.freedesktop.org>, Dave Airlie <airlied@gmail.com>, Mario Limonciello <Mario.Limonciello@dell.com> Subject: Re: [PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges Date: Wed, 20 Nov 2019 13:51:27 +0200 [thread overview] Message-ID: <20191120115127.GD11621@lahna.fi.intel.com> (raw) In-Reply-To: <20191120112212.GA11621@lahna.fi.intel.com> On Wed, Nov 20, 2019 at 01:22:16PM +0200, Mika Westerberg wrote: > If (((OSYS <= 0x07D9) || ((OSYS == 0x07DF) && (_REV == > 0x05)))) > { The OSYS comes from this (in DSDT): If (_OSI ("Windows 2009")) { OSYS = 0x07D9 } If (_OSI ("Windows 2012")) { OSYS = 0x07DC } If (_OSI ("Windows 2013")) { OSYS = 0x07DD } If (_OSI ("Windows 2015")) { OSYS = 0x07DF } So I guess this particular check tries to identify Windows 7 and older, and Linux. > If ((PIOF == Zero)) > { > P0LD = One > TCNT = Zero > While ((TCNT < LDLY)) > { > If ((P0LT == 0x08)) > { > Break > } > > Sleep (0x10) > TCNT += 0x10 > } > > P0RM = One > P0AP = 0x03 > } > ElseIf ((PIOF == One)) > { > P1LD = One > TCNT = Zero > While ((TCNT < LDLY)) > { > If ((P1LT == 0x08)) > { > Break > } > > Sleep (0x10) > TCNT += 0x10 > } > > P1RM = One > P1AP = 0x03 > } > ElseIf ((PIOF == 0x02)) > { > P2LD = One > TCNT = Zero > While ((TCNT < LDLY)) > { > If ((P2LT == 0x08)) > { > Break > } > > Sleep (0x10) > TCNT += 0x10 > } > > P2RM = One > P2AP = 0x03 > } > > If ((PBGE != Zero)) > { > If (SBDL (PIOF)) > { > MBDL = GMXB (PIOF) > PDUB (PIOF, MBDL) > } > } > } > Else > { > LKDS (PIOF) > } > > If ((DerefOf (SCLK [Zero]) != Zero)) > { > PCRO (0xDC, 0x100C, DerefOf (SCLK [One])) > Sleep (0x10) > } > > GPPR (PIOF, Zero) > If ((OSYS != 0x07D9)) > { > DIWK (PIOF) > } > > \_SB.SGOV (0x01010004, Zero) > Sleep (0x14) > Return (Zero) > }
WARNING: multiple messages have this Message-ID (diff)
From: Mika Westerberg <mika.westerberg@intel.com> To: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Karol Herbst <kherbst@redhat.com>, Linux PM <linux-pm@vger.kernel.org>, Linux PCI <linux-pci@vger.kernel.org>, Mario Limonciello <Mario.Limonciello@dell.com>, "Rafael J . Wysocki" <rjw@rjwysocki.net>, LKML <linux-kernel@vger.kernel.org>, dri-devel <dri-devel@lists.freedesktop.org>, Bjorn Helgaas <helgaas@kernel.org>, nouveau <nouveau@lists.freedesktop.org> Subject: Re: [PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges Date: Wed, 20 Nov 2019 13:51:27 +0200 [thread overview] Message-ID: <20191120115127.GD11621@lahna.fi.intel.com> (raw) Message-ID: <20191120115127.Py5WfCdBguBBZz5bqEcVy2Fy3rb17vfhy5TT7uNnY4E@z> (raw) In-Reply-To: <20191120112212.GA11621@lahna.fi.intel.com> On Wed, Nov 20, 2019 at 01:22:16PM +0200, Mika Westerberg wrote: > If (((OSYS <= 0x07D9) || ((OSYS == 0x07DF) && (_REV == > 0x05)))) > { The OSYS comes from this (in DSDT): If (_OSI ("Windows 2009")) { OSYS = 0x07D9 } If (_OSI ("Windows 2012")) { OSYS = 0x07DC } If (_OSI ("Windows 2013")) { OSYS = 0x07DD } If (_OSI ("Windows 2015")) { OSYS = 0x07DF } So I guess this particular check tries to identify Windows 7 and older, and Linux. > If ((PIOF == Zero)) > { > P0LD = One > TCNT = Zero > While ((TCNT < LDLY)) > { > If ((P0LT == 0x08)) > { > Break > } > > Sleep (0x10) > TCNT += 0x10 > } > > P0RM = One > P0AP = 0x03 > } > ElseIf ((PIOF == One)) > { > P1LD = One > TCNT = Zero > While ((TCNT < LDLY)) > { > If ((P1LT == 0x08)) > { > Break > } > > Sleep (0x10) > TCNT += 0x10 > } > > P1RM = One > P1AP = 0x03 > } > ElseIf ((PIOF == 0x02)) > { > P2LD = One > TCNT = Zero > While ((TCNT < LDLY)) > { > If ((P2LT == 0x08)) > { > Break > } > > Sleep (0x10) > TCNT += 0x10 > } > > P2RM = One > P2AP = 0x03 > } > > If ((PBGE != Zero)) > { > If (SBDL (PIOF)) > { > MBDL = GMXB (PIOF) > PDUB (PIOF, MBDL) > } > } > } > Else > { > LKDS (PIOF) > } > > If ((DerefOf (SCLK [Zero]) != Zero)) > { > PCRO (0xDC, 0x100C, DerefOf (SCLK [One])) > Sleep (0x10) > } > > GPPR (PIOF, Zero) > If ((OSYS != 0x07D9)) > { > DIWK (PIOF) > } > > \_SB.SGOV (0x01010004, Zero) > Sleep (0x14) > Return (Zero) > } _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2019-11-20 11:51 UTC|newest] Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-17 12:19 [PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges Karol Herbst 2019-11-14 19:17 ` Karol Herbst 2019-11-14 19:17 ` Karol Herbst [not found] ` <20191017121901.13699-1-kherbst-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2019-11-19 20:06 ` Dave Airlie 2019-11-19 20:06 ` Dave Airlie 2019-11-19 21:49 ` Bjorn Helgaas 2019-11-19 21:49 ` Bjorn Helgaas [not found] ` <20191119214955.GA223696-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> 2019-11-19 22:26 ` Karol Herbst 2019-11-19 22:26 ` Karol Herbst 2019-11-19 22:57 ` Bjorn Helgaas 2019-11-19 22:57 ` Bjorn Helgaas 2019-11-20 10:18 ` Mika Westerberg 2019-11-20 10:18 ` Mika Westerberg [not found] ` <20191120101816.GX11621-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org> 2019-11-20 10:52 ` Rafael J. Wysocki 2019-11-20 10:52 ` Rafael J. Wysocki 2019-11-20 11:22 ` Mika Westerberg 2019-11-20 11:22 ` Mika Westerberg 2019-11-20 11:48 ` Rafael J. Wysocki 2019-11-20 11:51 ` Karol Herbst 2019-11-20 11:51 ` Karol Herbst [not found] ` <CACO55tsjj+xkDjubz1J=fsPecW4H_J8AaBTeaMm+NYjp8Kiq8g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2019-11-20 12:06 ` Rafael J. Wysocki 2019-11-20 12:06 ` Rafael J. Wysocki [not found] ` <CAJZ5v0ithxMPK2YxfTUx_Ygpze2FMDJ6LwKwJb2vx89dfgHX_A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2019-11-20 12:09 ` Karol Herbst 2019-11-20 12:09 ` Karol Herbst 2019-11-20 12:14 ` Rafael J. Wysocki 2019-11-20 12:14 ` Rafael J. Wysocki 2019-11-20 12:19 ` Karol Herbst 2019-11-20 12:19 ` Karol Herbst 2019-11-20 12:11 ` Rafael J. Wysocki 2019-11-20 12:11 ` Rafael J. Wysocki 2019-11-20 11:51 ` Mika Westerberg [this message] 2019-11-20 11:51 ` Mika Westerberg [not found] ` <20191120115127.GD11621-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org> 2019-11-20 11:54 ` Karol Herbst 2019-11-20 11:54 ` Karol Herbst [not found] ` <CACO55tsfNOdtu5SZ-4HzO4Ji6gQtafvZ7Rm19nkPcJAgwUBFMw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2019-11-20 11:58 ` Karol Herbst 2019-11-20 11:58 ` Karol Herbst 2019-11-20 12:09 ` Mika Westerberg 2019-11-20 12:09 ` Mika Westerberg [not found] ` <20191120120913.GE11621-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org> 2019-11-20 12:11 ` Karol Herbst 2019-11-20 12:11 ` Karol Herbst 2019-11-20 15:15 ` Mika Westerberg 2019-11-20 15:15 ` Mika Westerberg 2019-11-20 15:37 ` Karol Herbst 2019-11-20 15:53 ` Mika Westerberg 2019-11-20 15:53 ` Mika Westerberg 2019-11-20 16:23 ` Mika Westerberg 2019-11-20 16:23 ` Mika Westerberg [not found] ` <20191120162306.GM11621-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org> 2019-11-20 21:36 ` Karol Herbst 2019-11-20 21:36 ` Karol Herbst 2019-11-21 10:14 ` Mika Westerberg 2019-11-21 10:14 ` Mika Westerberg 2019-11-21 11:03 ` Rafael J. Wysocki [not found] ` <CAJZ5v0hAgz4Fu=83AJE2PYUsi+Jk=Lrr4MNp5ySA9yY=3wr5rg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2019-11-21 11:08 ` Rafael J. Wysocki 2019-11-21 11:08 ` Rafael J. Wysocki 2019-11-21 11:15 ` Rafael J. Wysocki 2019-11-21 11:15 ` Rafael J. Wysocki 2019-11-21 11:17 ` Mika Westerberg 2019-11-21 11:17 ` Mika Westerberg 2019-11-21 11:31 ` Rafael J. Wysocki 2019-11-21 11:31 ` Rafael J. Wysocki 2019-11-20 21:37 ` Rafael J. Wysocki 2019-11-20 21:37 ` Rafael J. Wysocki 2019-11-20 21:40 ` Karol Herbst 2019-11-20 21:40 ` Karol Herbst 2019-11-20 22:29 ` Rafael J. Wysocki 2019-11-20 22:29 ` Rafael J. Wysocki 2019-11-21 11:28 ` Mika Westerberg [not found] ` <20191121112821.GU11621-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org> 2019-11-21 11:34 ` Rafael J. Wysocki 2019-11-21 11:34 ` Rafael J. Wysocki 2019-11-21 11:46 ` Mika Westerberg 2019-11-21 11:46 ` Mika Westerberg 2019-11-21 12:52 ` Mika Westerberg 2019-11-21 12:56 ` Karol Herbst 2019-11-21 12:56 ` Karol Herbst [not found] ` <20191121125236.GX11621-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org> 2019-11-21 15:43 ` Rafael J. Wysocki 2019-11-21 15:43 ` Rafael J. Wysocki 2019-11-21 19:49 ` Mika Westerberg 2019-11-21 19:49 ` Mika Westerberg [not found] ` <20191121194942.GY11621-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org> 2019-11-21 22:39 ` Rafael J. Wysocki 2019-11-21 22:39 ` Rafael J. Wysocki 2019-11-21 22:50 ` Karol Herbst 2019-11-22 0:13 ` Karol Herbst 2019-11-22 0:13 ` Karol Herbst 2019-11-22 9:07 ` Rafael J. Wysocki 2019-11-22 9:07 ` Rafael J. Wysocki [not found] ` <CAJZ5v0jNq77xPXxeYeq_JJBCfekVPVPOye1mZwpQi=+=MKSS7w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2019-11-22 11:30 ` Karol Herbst 2019-11-22 11:30 ` Karol Herbst 2019-11-22 10:36 ` Mika Westerberg 2019-11-22 11:30 ` Rafael J. Wysocki 2019-11-22 11:30 ` Rafael J. Wysocki [not found] ` <CAJZ5v0gifnGZcKr6mgc6C2EfqX13OyJnOac0uDxYNKN=A0cgMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2019-11-22 11:34 ` Karol Herbst 2019-11-22 11:34 ` Karol Herbst 2019-11-22 11:54 ` Rafael J. Wysocki 2019-11-22 11:54 ` Rafael J. Wysocki 2019-11-22 11:52 ` Mika Westerberg 2019-11-22 12:15 ` Rafael J. Wysocki 2019-11-21 12:52 ` Karol Herbst 2019-11-21 12:52 ` Karol Herbst 2019-11-21 15:47 ` Rafael J. Wysocki 2019-11-21 15:47 ` Rafael J. Wysocki 2019-11-21 16:06 ` Karol Herbst 2019-11-21 16:06 ` Karol Herbst 2019-11-21 16:39 ` Rafael J. Wysocki 2019-11-21 16:39 ` Rafael J. Wysocki 2019-11-26 23:10 ` Lyude Paul 2019-11-27 11:48 ` Mika Westerberg 2019-11-27 11:48 ` Mika Westerberg 2019-11-27 11:51 ` Karol Herbst 2019-11-27 11:51 ` Karol Herbst 2019-11-27 19:51 ` Lyude Paul 2019-11-27 19:51 ` Lyude Paul 2019-12-09 11:17 ` Karol Herbst 2019-12-09 11:38 ` Rafael J. Wysocki 2019-12-09 12:24 ` Karol Herbst 2019-12-10 19:58 ` Dave Airlie 2019-12-10 20:49 ` Karol Herbst 2020-01-13 15:31 ` Karol Herbst
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