From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "Bjorn Helgaas" <helgaas@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"Matthew Garrett" <mjg59@srcf.ucam.org>,
"Tony Luck" <tony.luck@intel.com>,
DRI <dri-devel@lists.freedesktop.org>,
"Fenghua Yu" <fenghua.yu@intel.com>,
"Intel Graphics Development" <intel-gfx@lists.freedesktop.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Ralf Baechle" <ralf@linux-mips.org>,
"Bruno Prémont" <bonbons@linux-vserver.org>,
"Daniel Stone" <daniel@fooishbar.org>,
"Alex Deucher" <alexdeucher@gmail.com>,
"Ville Syrjälä" <ville.syrjala@linux.intel.com>
Subject: Re: [PATCH v1 00/12] PCI: Rework shadow ROM handling
Date: Fri, 11 Mar 2016 17:09:10 -0800 [thread overview]
Message-ID: <CA+55aFwhMWDa4=7x_AgH34Z2US+gyuHT_-=S+vwkZAbkHRm10Q@mail.gmail.com> (raw)
In-Reply-To: <CALCETrV4D2Kzn=6ags5tAP+ortjFpeeNEKW-91UHsF=UA5bN+g@mail.gmail.com>
On Fri, Mar 11, 2016 at 4:49 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>
> FWIW, if I disable all the checks in pci_get_rom_size, I learn that my
> video ROM consists entirely of 0xff bytes. Maybe there just isn't a
> ROM shadow on my laptop.
I think most laptops end up having the graphics ROM be part of the
regular system flash, and there is no actual rom associated with the
PCI device that is the GPU itself.
The actual GPU ROM tends to be associated with plug-in cards, not
soldered-down chips in a laptop where they don't want extra flash
chips.
Linus
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "Tony Luck" <tony.luck@intel.com>,
"Fenghua Yu" <fenghua.yu@intel.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"Intel Graphics Development" <intel-gfx@lists.freedesktop.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
DRI <dri-devel@lists.freedesktop.org>,
"Alex Deucher" <alexdeucher@gmail.com>,
"Bruno Prémont" <bonbons@linux-vserver.org>,
"Bjorn Helgaas" <helgaas@kernel.org>,
"Ralf Baechle" <ralf@linux-mips.org>,
"Bjorn Helgaas" <bhelgaas@google.com>
Subject: Re: [PATCH v1 00/12] PCI: Rework shadow ROM handling
Date: Fri, 11 Mar 2016 17:09:10 -0800 [thread overview]
Message-ID: <CA+55aFwhMWDa4=7x_AgH34Z2US+gyuHT_-=S+vwkZAbkHRm10Q@mail.gmail.com> (raw)
In-Reply-To: <CALCETrV4D2Kzn=6ags5tAP+ortjFpeeNEKW-91UHsF=UA5bN+g@mail.gmail.com>
On Fri, Mar 11, 2016 at 4:49 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>
> FWIW, if I disable all the checks in pci_get_rom_size, I learn that my
> video ROM consists entirely of 0xff bytes. Maybe there just isn't a
> ROM shadow on my laptop.
I think most laptops end up having the graphics ROM be part of the
regular system flash, and there is no actual rom associated with the
PCI device that is the GPU itself.
The actual GPU ROM tends to be associated with plug-in cards, not
soldered-down chips in a laptop where they don't want extra flash
chips.
Linus
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Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2016-03-12 1:09 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-03 16:53 [PATCH v1 00/12] PCI: Rework shadow ROM handling Bjorn Helgaas
2016-03-03 16:53 ` Bjorn Helgaas
2016-03-03 16:53 ` [PATCH v1 01/12] PCI: Mark shadow copy of VGA ROM as IORESOURCE_PCI_FIXED Bjorn Helgaas
2016-03-03 16:53 ` Bjorn Helgaas
2016-03-03 16:54 ` [PATCH v1 02/12] PCI: Don't assign or reassign immutable resources Bjorn Helgaas
2016-03-03 16:54 ` Bjorn Helgaas
2016-03-03 16:54 ` [PATCH v1 03/12] PCI: Don't enable/disable ROM BAR if we're using a RAM shadow copy Bjorn Helgaas
2016-03-03 16:54 ` Bjorn Helgaas
2016-03-03 16:54 ` [PATCH v1 04/12] PCI: Set ROM shadow location in arch code, not in PCI core Bjorn Helgaas
2016-03-03 16:54 ` Bjorn Helgaas
2016-03-03 16:54 ` [PATCH v1 05/12] PCI: Clean up pci_map_rom() whitespace Bjorn Helgaas
2016-03-03 16:54 ` Bjorn Helgaas
2016-03-03 16:54 ` [PATCH v1 06/12] ia64/PCI: Use temporary struct resource * to avoid repetition Bjorn Helgaas
2016-03-03 16:54 ` Bjorn Helgaas
2016-03-03 16:54 ` [PATCH v1 07/12] ia64/PCI: Use ioremap() instead of open-coded equivalent Bjorn Helgaas
2016-03-03 16:54 ` Bjorn Helgaas
2016-03-03 16:54 ` [PATCH v1 08/12] ia64/PCI: Keep CPU physical (not virtual) addresses in shadow ROM resource Bjorn Helgaas
2016-03-03 16:54 ` Bjorn Helgaas
2016-03-03 16:55 ` [PATCH v1 09/12] MIPS: Loongson 3: Use temporary struct resource * to avoid repetition Bjorn Helgaas
2016-03-03 16:55 ` Bjorn Helgaas
2016-03-03 16:55 ` [PATCH v1 10/12] MIPS: Loongson 3: Keep CPU physical (not virtual) addresses in shadow ROM resource Bjorn Helgaas
2016-03-03 16:55 ` Bjorn Helgaas
2016-03-03 16:55 ` [PATCH v1 11/12] PCI: Remove unused IORESOURCE_ROM_COPY and IORESOURCE_ROM_BIOS_COPY Bjorn Helgaas
2016-03-03 16:55 ` Bjorn Helgaas
2016-03-03 16:55 ` [PATCH v1 12/12] PCI: Simplify sysfs ROM cleanup Bjorn Helgaas
2016-03-03 16:55 ` Bjorn Helgaas
2016-03-03 18:02 ` [PATCH v1 00/12] PCI: Rework shadow ROM handling Linus Torvalds
2016-03-08 17:45 ` Bjorn Helgaas
2016-03-11 21:16 ` Andy Lutomirski
2016-03-11 23:29 ` Bjorn Helgaas
2016-03-12 0:49 ` Andy Lutomirski
2016-03-12 1:09 ` Linus Torvalds [this message]
2016-03-12 1:09 ` Linus Torvalds
2016-03-12 4:04 ` Alex Deucher
2016-03-12 12:26 ` Bjorn Helgaas
2016-03-12 12:26 ` Bjorn Helgaas
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