Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as wellas x86_32

[Andy Isaacson]

On Fri, Apr 09, 2010 at 03:27:11PM -0700, Yinghai Lu wrote:
> > On Fri, Apr 09, 2010 at 12:55:39PM -0700, Yinghai wrote:
> >> update version for test
> >>
> >> Subject: [PATCH] x86: reserve [0xa0000, 0x100000] in e820
> >>
> >> Update e820 at first, and later put them resource tree.
> >> But give pci BAR chance to claim the range, before assign unassigned resources.
> >>
> >> In case some system doesn't have VGA, and use [0xa0000, ..] for mmio of some
> >> other pci devices.
> >>     
> > This doesn't help, my AHCI still fails to initialize in the same way.
> >
> >   
> bootlog?
> 
> what is the address used for AHCI?

Full bootlog attached to
https://bugzilla.kernel.org/show_bug.cgi?id=15744

Snippets:


[    0.000000]  BIOS-e820: 00000000bfe55c00 - 00000000c0000000 (reserved)
[    0.000000]  BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
[    0.000000]  BIOS-e820: 00000000fec00000 - 00000000fed00400 (reserved)
[    0.000000]  BIOS-e820: 00000000fed20000 - 00000000feda0000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fef00000 (reserved)
[    0.000000]  BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved)
[    0.000000]  BIOS-e820: 0000000100000000 - 00000001bc000000 (usable)
--
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] ACPI: HPET id: 0x8086a301 base: 0xfed00000
[    0.000000] SMP: Allowing 8 CPUs, 4 hotplug CPUs
[    0.000000] PM: Registered nosave memory: 000000000009e000 - 00000000000a0000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 0000000000100000
[    0.000000] PM: Registered nosave memory: 00000000bfe01000 - 00000000bfe02000
[    0.000000] PM: Registered nosave memory: 00000000bfe02000 - 00000000bfe53000
[    0.000000] PM: Registered nosave memory: 00000000bfe53000 - 00000000bfe54000
--
[    0.000000] PM: Registered nosave memory: 00000000f0000000 - 00000000fec00000
[    0.000000] PM: Registered nosave memory: 00000000fec00000 - 00000000fed00000
[    0.000000] PM: Registered nosave memory: 00000000fed00000 - 00000000fed20000
[    0.000000] PM: Registered nosave memory: 00000000fed20000 - 00000000feda0000
[    0.000000] PM: Registered nosave memory: 00000000feda0000 - 00000000fee00000
[    0.000000] PM: Registered nosave memory: 00000000fee00000 - 00000000fef00000
[    0.000000] PM: Registered nosave memory: 00000000fef00000 - 00000000ffb00000
[    0.000000] PM: Registered nosave memory: 00000000ffb00000 - 0000000100000000
--
[    0.000000] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS:2304
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty0] enabled
[    0.000000] console [ttyS0] enabled
[    0.000000] Fast TSC calibration using PIT
--
[    0.684251] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    0.702226] pci_root PNP0A03:00: host bridge window [io  0x0000-0x0cf7]
[    0.703002] pci_root PNP0A03:00: host bridge window [io  0x0d00-0xffff]
[    0.704003] pci_root PNP0A03:00: host bridge window [mem 0x000a0000-0x000bffff]
[    0.705002] pci_root PNP0A03:00: host bridge window [mem 0x000c0000-0x000effff]
[    0.706002] pci_root PNP0A03:00: host bridge window [mem 0x000f0000-0x000fffff]
[    0.707001] pci_root PNP0A03:00: host bridge window [mem 0xf0000000-0xfebfffff]
--
[    2.059784] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 11 12 15) *0, disabled.
[    2.065789] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 *9 10 11 12 15)
[    2.070538] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 *5 6 7 9 10 11 12 15)
[    2.074594] vgaarb: device added: PCI:0000:01:00.0,decodes=io+mem,owns=io+mem,locks=none
[    2.075003] vgaarb: loaded
[    2.076073] SCSI subsystem initialized
[    2.077055] usbcore: registered new interface driver usbfs
[    2.078024] usbcore: registered new interface driver hub
--
[    2.247143] pci 0000:00:1c.5: BAR 9: assigned [mem 0xf0200000-0xf03fffff 64bit pref]
[    2.255207] pci 0000:00:1c.0: BAR 7: assigned [io  0x1000-0x1fff]
[    2.261473] pci 0000:00:1c.5: BAR 7: assigned [io  0x2000-0x2fff]
[    2.267740] pci 0000:00:1f.2: BAR 5: assigned [mem 0x000a0000-0x000a07ff]
[    2.274701] pci 0000:00:1f.2: BAR 5: set to [mem 0x000a0000-0x000a07ff] (PCI address [0xa0000-0xa07ff]
[    2.284326] pci 0000:00:01.0: PCI bridge to [bus 01-01]
[    2.289725] pci 0000:00:01.0:   bridge window [io  0xd000-0xdfff]
[    2.295992] pci 0000:00:01.0:   bridge window [mem 0xfa000000-0xfdefffff]
--
[    4.376870] brd: module loaded
[    4.381469] loop: module loaded
[    4.384915] Loading iSCSI transport class v2.0-870.
[    4.390597] ahci 0000:00:1f.2: PCI INT C -> GSI 20 (level, low) -> IRQ 20
[    4.397684] ahci: SSS flag set, parallel bus scan disabled
[    5.405019] ahci 0000:00:1f.2: controller reset failed (0xffffffff)
[    5.411473] ahci 0000:00:1f.2: PCI INT C disabled
[    5.416347] ahci: probe of 0000:00:1f.2 failed with error -5
[    5.422248] Intel(R) PRO/1000 Network Driver - version 7.3.21-k5-NAPI
[    5.428859] Copyright (c) 1999-2006 Intel Corporation.
[    5.434260] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI
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