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Date:      Fri, 10 Jul 2020 10:50:23 -0400
From:      Shawn Webb <shawn.webb@hardenedbsd.org>
To:        Emmanuel Vadot <manu@bidouilliste.com>
Cc:        freebsd-x11@freebsd.org
Subject:   Re: Latest Dell Precision 7550 Intel graphics
Message-ID:  <20200710145023.34fwrs46bvamnn3g@mutt-hbsd>
In-Reply-To: <20200710164330.2fb61bb238c4a7f36fb2543f@bidouilliste.com>
References:  <20200710142001.d4qfz75jxvnhy4xr@mutt-hbsd> <20200710061148.e4f10387aefe69c6e51f6a74@bidouilliste.com> <20200710143419.acbnhmjix37dem7v@mutt-hbsd> <20200710164330.2fb61bb238c4a7f36fb2543f@bidouilliste.com>

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On Fri, Jul 10, 2020 at 04:43:30PM +0200, Emmanuel Vadot wrote:
> On Fri, 10 Jul 2020 10:34:19 -0400
> Shawn Webb <shawn.webb@hardenedbsd.org> wrote:
>=20
> > On Fri, Jul 10, 2020 at 06:11:48AM +0200, Emmanuel Vadot wrote:
> > > On Fri, 10 Jul 2020 10:20:01 -0400
> > > Shawn Webb <shawn.webb@hardenedbsd.org> wrote:
> > >=20
> > > > Hey all,
> > > >=20
> > > > I'm curious about the state of drm-kmod with regards to the latest
> > > > Dell Precision 7550 series laptops. Looking like I may need to use
> > > > scfb for the time being, but I wanted to make sure.
> > > >=20
> > > > Thanks,
> > > >=20
> > > > --=20
> > > > Shawn Webb
> > > > Cofounder / Security Engineer
> > > > HardenedBSD
> > > >=20
> > > > GPG Key ID:          0xFF2E67A277F8E1FA
> > > > GPG Key Fingerprint: D206 BB45 15E0 9C49 0CF9  3633 C85B 0AF8 AB23 =
0FB2
> > > > https://git-01.md.hardenedbsd.org/HardenedBSD/pubkeys/src/branch/ma=
ster/Shawn_Webb/03A4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc
> > >=20
> > >  What's the hardware inside ?
> > >  Show pciconf -lv please.
> >=20
> > hostb0@pci0:0:0:0:	class=3D0x060000 rev=3D0x02 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x9b44 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D '10th Gen Core Processor Host Bridge/DRAM Registers'
> >     class      =3D bridge
> >     subclass   =3D HOST-PCI
> > vgapci0@pci0:0:2:0:	class=3D0x030000 rev=3D0x05 hdr=3D0x00 vendor=3D0x8=
086 device=3D0x9bf6 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     class      =3D display
> >     subclass   =3D VGA
> > none0@pci0:0:4:0:	class=3D0x118000 rev=3D0x02 hdr=3D0x00 vendor=3D0x808=
6 device=3D0x1903 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor T=
hermal Subsystem'
> >     class      =3D dasp
> > none1@pci0:0:8:0:	class=3D0x088000 rev=3D0x00 hdr=3D0x00 vendor=3D0x808=
6 device=3D0x1911 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen C=
ore Processor Gaussian Mixture Model'
> >     class      =3D base peripheral
> > none2@pci0:0:18:0:	class=3D0x118000 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06f9 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake PCH Thermal Controller'
> >     class      =3D dasp
> > none3@pci0:0:19:0:	class=3D0x070000 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06fc subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     class      =3D simple comms
> >     subclass   =3D UART
> > xhci0@pci0:0:20:0:	class=3D0x0c0330 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06ed subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake USB 3.1 xHCI Host Controller'
> >     class      =3D serial bus
> >     subclass   =3D USB
> > none4@pci0:0:20:2:	class=3D0x050000 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06ef subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake PCH Shared SRAM'
> >     class      =3D memory
> >     subclass   =3D RAM
> > none5@pci0:0:20:3:	class=3D0x028000 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06f0 subvendor=3D0x8086 subdevice=3D0x4070
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Wi-Fi 6 AX201'
> >     class      =3D network
> > none6@pci0:0:21:0:	class=3D0x0c8000 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06e8 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake PCH Serial IO I2C Controller'
> >     class      =3D serial bus
> > none7@pci0:0:21:1:	class=3D0x0c8000 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06e9 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake PCH Serial IO I2C Controller'
> >     class      =3D serial bus
> > none8@pci0:0:22:0:	class=3D0x078000 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06e0 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake HECI Controller'
> >     class      =3D simple comms
> > pcib1@pci0:0:27:0:	class=3D0x060400 rev=3D0xf0 hdr=3D0x01 vendor=3D0x80=
86 device=3D0x06ac subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake PCI Express Root Port'
> >     class      =3D bridge
> >     subclass   =3D PCI-PCI
> > pcib2@pci0:0:28:0:	class=3D0x060400 rev=3D0xf0 hdr=3D0x01 vendor=3D0x80=
86 device=3D0x06b8 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     class      =3D bridge
> >     subclass   =3D PCI-PCI
> > pcib8@pci0:0:28:5:	class=3D0x060400 rev=3D0xf0 hdr=3D0x01 vendor=3D0x80=
86 device=3D0x06bd subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     class      =3D bridge
> >     subclass   =3D PCI-PCI
> > isab0@pci0:0:31:0:	class=3D0x060100 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x068e subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     class      =3D bridge
> >     subclass   =3D PCI-ISA
> > hdac0@pci0:0:31:3:	class=3D0x040380 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06c8 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake PCH cAVS'
> >     class      =3D multimedia
> >     subclass   =3D HDA
> > none9@pci0:0:31:4:	class=3D0x0c0500 rev=3D0x00 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x06a3 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake PCH SMBus Controller'
> >     class      =3D serial bus
> >     subclass   =3D SMBus
> > none10@pci0:0:31:5:	class=3D0x0c8000 rev=3D0x00 hdr=3D0x00 vendor=3D0x8=
086 device=3D0x06a4 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Comet Lake PCH SPI Controller'
> >     class      =3D serial bus
> > em0@pci0:0:31:6:	class=3D0x020000 rev=3D0x00 hdr=3D0x00 vendor=3D0x8086=
 device=3D0x0d4c subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'Ethernet Connection (11) I219-LM'
> >     class      =3D network
> >     subclass   =3D ethernet
> > nvme0@pci0:1:0:0:	class=3D0x010802 rev=3D0x00 hdr=3D0x00 vendor=3D0x117=
9 device=3D0x011a subvendor=3D0x1179 subdevice=3D0x0001
> >     vendor     =3D 'Toshiba Corporation'
> >     class      =3D mass storage
> >     subclass   =3D NVM
> > pcib3@pci0:2:0:0:	class=3D0x060400 rev=3D0x06 hdr=3D0x01 vendor=3D0x808=
6 device=3D0x15ea subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018]'
> >     class      =3D bridge
> >     subclass   =3D PCI-PCI
> > pcib4@pci0:3:0:0:	class=3D0x060400 rev=3D0x06 hdr=3D0x01 vendor=3D0x808=
6 device=3D0x15ea subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018]'
> >     class      =3D bridge
> >     subclass   =3D PCI-PCI
> > pcib5@pci0:3:1:0:	class=3D0x060400 rev=3D0x06 hdr=3D0x01 vendor=3D0x808=
6 device=3D0x15ea subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018]'
> >     class      =3D bridge
> >     subclass   =3D PCI-PCI
> > pcib6@pci0:3:2:0:	class=3D0x060400 rev=3D0x06 hdr=3D0x01 vendor=3D0x808=
6 device=3D0x15ea subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018]'
> >     class      =3D bridge
> >     subclass   =3D PCI-PCI
> > pcib7@pci0:3:4:0:	class=3D0x060400 rev=3D0x06 hdr=3D0x01 vendor=3D0x808=
6 device=3D0x15ea subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'JHL7540 Thunderbolt 3 Bridge [Titan Ridge 4C 2018]'
> >     class      =3D bridge
> >     subclass   =3D PCI-PCI
> > none11@pci0:4:0:0:	class=3D0x088000 rev=3D0x06 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x15eb subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'JHL7540 Thunderbolt 3 NHI [Titan Ridge 4C 2018]'
> >     class      =3D base peripheral
> > xhci1@pci0:56:0:0:	class=3D0x0c0330 rev=3D0x06 hdr=3D0x00 vendor=3D0x80=
86 device=3D0x15ec subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D 'JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4=
C 2018]'
> >     class      =3D serial bus
> >     subclass   =3D USB
> > none12@pci0:109:0:0:	class=3D0xff0000 rev=3D0x01 hdr=3D0x00 vendor=3D0x=
10ec device=3D0x5260 subvendor=3D0x1028 subdevice=3D0x09c3
> >     vendor     =3D 'Realtek Semiconductor Co., Ltd.'
> >     device     =3D 'RTS5260 PCI Express Card Reader'
> >=20
> > --=20
> > Shawn Webb
> > Cofounder / Security Engineer
> > HardenedBSD
> >=20
> > GPG Key ID:          0xFF2E67A277F8E1FA
> > GPG Key Fingerprint: D206 BB45 15E0 9C49 0CF9  3633 C85B 0AF8 AB23 0FB2
> > https://git-01.md.hardenedbsd.org/HardenedBSD/pubkeys/src/branch/master=
/Shawn_Webb/03A4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc
>=20
>  This was added in 5.4 with this commit :
> https://github.com/torvalds/linux/commit/bfc4c359b2822bd2c457ccab271baeb3=
3181c7c9#diff-0f28900cd4f7f14731c970ed828f4e53
>=20
>  But you should be able to use drm-devel-kmod and backport this patch.
>  I'm working on 5.4 but won't have something until next week I think.

Cool. Thanks for the hint! I should fork github.com/freebsd/drm-kmod
to apply that patch, correct? If so, I'll apply the patch and report
back my results.

Thanks,

--=20
Shawn Webb
Cofounder / Security Engineer
HardenedBSD

GPG Key ID:          0xFF2E67A277F8E1FA
GPG Key Fingerprint: D206 BB45 15E0 9C49 0CF9  3633 C85B 0AF8 AB23 0FB2
https://git-01.md.hardenedbsd.org/HardenedBSD/pubkeys/src/branch/master/Sha=
wn_Webb/03A4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc

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