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    SubjectRe: [Fwd: Re: OOPS in agpgart (2.4.13, 2.4.15pre7)]
    Dear Robert, Nicolas, Stephan,   :)


    Robert Love wrote:

    > On Mon, 2001-11-26 at 06:47, Nicolas Aspert wrote:
    >
    >
    >>It seems like you have pointed out the problem... From what you had sent
    >>previously (the output of 'lspci' on your machine), and what the Intel
    >>doc says, it looks to me like the code for i830 initialization is not
    >>correct for your version of the chipset. But I am not too sure of what
    >>is to be done in that case... should we switch back to a 'classic' AGP
    >>initialization, similar to the other i8xx chipsets (820/840/860...) ?
    >>Robert (or somebody else), any clue about this one ?
    >>
    >
    > It looks like you got it right ... at any rate, you know as much as me
    > about a chipset neither of us have (ie, we have docs), so its all a
    > guess.
    >
    > Has the user tried your patch? Results?

    I got two patches :


    1. From Stephan, to test whether my assumption about the secondary
    device was right :

    Stephan wrote :

    But if you want you can check that out pretty simple: just add a "break"
    right
    after the case :

    case PCI_DEVICE_ID_INTEL_830_M_0:
    ---> break;

    i810_dev = pci_find_device(PCI_VENDOR_ID_INTEL,


    This patch left me with a loaded agpgart, and accelerated X (DRM/DRI).
    The acceleration is still not up to par with an ATI Mobility-128 (30%
    lower, while it should be at least 200% faster), but I suspect an X
    CVS-problem here.

    Quitting and restarting X leaves me with a locked black screen.


    2. And the one from Nicolas, in which I changed all references from
    830MG to 830M.


    Results :

    1a. Nicolas' patches yielded an oops, which was corrected by
    implementing Stephan's first patch :

    + if(i810_dev && ( PCI_FUNC(i810_dev->devfn) != 0) ) {
    - if(PCI_FUNC(i810_dev->devfn) != 0) {

    1b. After Stephan's firsat patch, Nicolas' code loaded the agpgart, but
    left me with a messed-up X (XFree86 CVS 4.1.99.1 2001/11/26) : only a
    cursor, locked black screen, restart to ssh session.


    (I need the CVS-version of X : standard 4.1.0 doesn't detect the LCD
    panel size, and bugs out).


    Conclusion : Stephan's break-patch loads agpgart, loads X, and locks
    when reloading X ; Nicolas' patch (when combined with Stephan's first
    patch) loads agpgart and locks X hard.


    FYI : Dell has an i830M-design (the new i8100, together with a NVidia
    Mobile), and Gateway, Compaq, ... should have them too, I guess.




    The requested "lspci -vn" :


    00:00.0 Class 0600: 8086:3575 (rev 02)
    Subsystem: 1014:021d
    Flags: bus master, fast devsel, latency 0
    Memory at d0000000 (32-bit, prefetchable) [size=256M]
    Capabilities: [40] #09 [0105]
    Capabilities: [a0] AGP version 2.0

    00:01.0 Class 0604: 8086:3576 (rev 02)
    Flags: bus master, 66Mhz, fast devsel, latency 96
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
    I/O behind bridge: 00003000-00003fff
    Memory behind bridge: c0100000-c01fffff
    Prefetchable memory behind bridge: e0000000-e7ffffff

    00:1d.0 Class 0c03: 8086:2482 (rev 01)
    Subsystem: 1014:0220
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 1800 [size=32]

    00:1d.1 Class 0c03: 8086:2484 (rev 01)
    Subsystem: 1014:0220
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 1820 [size=32]

    00:1d.2 Class 0c03: 8086:2487 (rev 01)
    Subsystem: 1014:0220
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 1840 [size=32]

    00:1e.0 Class 0604: 8086:2448 (rev 41)
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=02, subordinate=08, sec-latency=64
    I/O behind bridge: 00004000-00008fff
    Memory behind bridge: c0200000-cfffffff
    Prefetchable memory behind bridge: e8000000-f00fffff

    00:1f.0 Class 0601: 8086:248c (rev 01)
    Flags: bus master, medium devsel, latency 0

    00:1f.1 Class 0101: 8086:248a (rev 01) (prog-if 8a [Master SecP PriP])
    Subsystem: 1014:0220
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 01f0 [size=8]
    I/O ports at 03f4
    I/O ports at 0170 [size=8]
    I/O ports at 0374
    I/O ports at 1860 [size=16]
    Memory at 20000000 (32-bit, non-prefetchable) [size=1K]

    00:1f.3 Class 0c05: 8086:2483 (rev 01)
    Subsystem: 1014:0220
    Flags: medium devsel, IRQ 11
    I/O ports at 1880 [size=32]

    00:1f.5 Class 0401: 8086:2485 (rev 01)
    Subsystem: 1014:0222
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 1c00 [size=256]
    I/O ports at 18c0 [size=64]

    00:1f.6 Class 0703: 8086:2486 (rev 01)
    Subsystem: 1014:0227
    Flags: medium devsel, IRQ 11
    I/O ports at 2400 [size=256]
    I/O ports at 2000 [size=128]

    01:00.0 Class 0300: 1002:4c59
    Subsystem: 1014:0235
    Flags: bus master, stepping, fast Back2Back, 66Mhz, medium devsel,
    latency 66, IRQ 11
    Memory at e0000000 (32-bit, prefetchable) [size=128M]
    I/O ports at 3000 [size=256]
    Memory at c0100000 (32-bit, non-prefetchable) [size=64K]
    Expansion ROM at <unassigned> [disabled] [size=128K]
    Capabilities: [58] AGP version 2.0
    Capabilities: [50] Power Management version 2

    02:00.0 Class 0607: 1180:0478 (rev a0)
    Subsystem: 1014:0184
    Flags: bus master, medium devsel, latency 168, IRQ 11
    Memory at c0202000 (32-bit, non-prefetchable) [size=4K]
    Bus: primary=02, secondary=03, subordinate=05, sec-latency=176
    Memory window 0: e8000000-e83ff000 (prefetchable)
    Memory window 1: c0400000-c07ff000
    I/O window 0: 00004000-000040ff
    I/O window 1: 00004400-000044ff
    16-bit legacy interface ports at 0001

    02:00.1 Class 0607: 1180:0478 (rev a0)
    Subsystem: 1014:0184
    Flags: bus master, medium devsel, latency 168, IRQ 11
    Memory at c0203000 (32-bit, non-prefetchable) [size=4K]
    Bus: primary=02, secondary=06, subordinate=08, sec-latency=176
    Memory window 0: e8400000-e87ff000 (prefetchable)
    Memory window 1: c0800000-c0bff000
    I/O window 0: 00004800-000048ff
    I/O window 1: 00004c00-00004cff
    16-bit legacy interface ports at 0001

    02:00.2 Class 0c00: 1180:0522 (prog-if 10)
    Subsystem: 1014:01cf
    Flags: bus master, medium devsel, latency 64, IRQ 11
    Memory at c0201000 (32-bit, non-prefetchable) [size=2K]
    Capabilities: [dc] Power Management version 2

    02:02.0 Class 0280: 1260:3873 (rev 01)
    Subsystem: 1668:0406
    Flags: bus master, medium devsel, latency 64, IRQ 11
    Memory at f0000000 (32-bit, prefetchable) [size=4K]
    Capabilities: [dc] Power Management version 2

    02:08.0 Class 0200: 8086:1031 (rev 41)
    Subsystem: 1014:0209
    Flags: bus master, medium devsel, latency 66, IRQ 11
    Memory at c0200000 (32-bit, non-prefetchable) [size=4K]
    I/O ports at 8000 [size=64]
    Capabilities: [dc] Power Management version 2



    -[00]-+-00.0 8086:3575
    +-01.0-[01]----00.0 1002:4c59
    +-1d.0 8086:2482
    +-1d.1 8086:2484
    +-1d.2 8086:2487
    +-1e.0-[02-08]--+-00.0 1180:0478
    | +-00.1 1180:0478
    | +-00.2 1180:0522
    | +-02.0 1260:3873
    | \-08.0 8086:1031
    +-1f.0 8086:248c
    +-1f.1 8086:248a
    +-1f.3 8086:2483
    +-1f.5 8086:2485
    \-1f.6 8086:2486




    Kind regards,

    Didier



    Didier Moens
    -----
    RUG/VIB - Dept. Molecular Biology - Core IT
    tel ++32(9)2645309 fax ++32(9)2645348
    http://www.dmb.rug.ac.be



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