From: Larry Finger <Larry.Finger@lwfinger.net>
To: Michael Buesch <mb@bu3sch.de>
Cc: "Nathan Schulte" <reklipz@gmail.com>,
"Gábor Stefanik" <netrolller.3d@gmail.com>,
bcm43xx-dev@lists.berlios.de, linux-wireless@vger.kernel.org,
"Linus Torvalds" <torvalds@linux-foundation.org>
Subject: Re: LP-PHY Fatal DMA error 0x00000800 on non-ULV Core 2 Duo?!?!!??!
Date: Wed, 03 Mar 2010 18:30:30 -0600 [thread overview]
Message-ID: <4B8EFF26.6040005@lwfinger.net> (raw)
In-Reply-To: <201003022257.51878.mb@bu3sch.de>
On 03/02/2010 03:57 PM, Michael Buesch wrote:
> A bug in the PCI-E core code is able to show such behavior, because all memory
> transfers (MMIO and DMA) from the PCI device to the wireless core are translated
> by the PCI-E core.
> I think the whole PCI-E core code has to be audited (also the specs, probably).
I have nearly finished the update on the code section of the specs page at
http://bcm-v4.sipsolutions.net/PCI-E. The part that is not done involves the
sections that read an address from the SPROM and perform operations on that address.
I found that the chip common registers are mapped at 12K for newer cores on
PCIe. This explains the 0x3XXX addresses. Similarly, the PCIe registers are
mapped at 8K - the 0x2XXX addresses. The SPROM is shadowed at 4K or 0x1XXX.
Larry
next prev parent reply other threads:[~2010-03-04 0:30 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <69e28c911002260708g45d3c0f7u6abf13b1babe549f@mail.gmail.com>
[not found] ` <201002271620.31410.mb@bu3sch.de>
[not found] ` <201002271708.29817.mb@bu3sch.de>
[not found] ` <4B894A61.1070302@lwfinger.net>
[not found] ` <69e28c911002271145s590df31en9d2f8b2c47932451@mail.gmail.com>
[not found] ` <4B899DA3.4030100@lwfinger.net>
[not found] ` <69e28c911002271534o8cab111vf7fcc1b93b6c4b47@mail.gmail.com>
[not found] ` <a221c0101002271542o5d928e56n8a22602860aeb761@mail.gmail.com>
[not found] ` <69e28c911002271544y62c93255k8a6dbb0adb2b5928@mail.gmail.com>
[not found] ` <20100228001655.4c9fd9ce@boulder.homenet>
[not found] ` <4B8AAF42.8000602@polymtl.ca>
2010-02-28 18:42 ` LP-PHY Fatal DMA error 0x00000800 on non-ULV Core 2 Duo?!?!!??! Gábor Stefanik
2010-02-28 18:47 ` Rafał Miłecki
2010-02-28 18:52 ` Gábor Stefanik
2010-02-28 18:58 ` Michael Buesch
2010-02-28 20:30 ` Chris Vine
2010-02-28 20:33 ` Michael Buesch
2010-02-28 20:51 ` William Bourque
2010-02-28 20:54 ` Chris Vine
2010-02-28 19:44 ` William Bourque
2010-02-28 20:03 ` Chris Vine
[not found] ` <a221c0101002271703p3f344ec4t78d5c8b77c6d1290@mail.gmail.com>
[not found] ` <a221c0101002271828ye265d72y774320c08a4a15da@mail.gmail.com>
[not found] ` <69e28c911002280814v56f2f553x847c8bae94e6aaab@mail.gmail.com>
2010-02-28 22:19 ` Nathan Schulte
2010-02-28 23:03 ` Gábor Stefanik
2010-02-28 23:38 ` Nathan Schulte
2010-03-01 0:22 ` Michael Buesch
2010-03-02 21:57 ` Michael Buesch
2010-03-02 22:11 ` Larry Finger
2010-03-02 22:25 ` William Bourque
2010-03-02 22:29 ` Michael Buesch
2010-03-02 22:50 ` William Bourque
2010-03-04 0:30 ` Larry Finger [this message]
2010-03-04 0:47 ` Gábor Stefanik
2010-03-04 1:32 ` Larry Finger
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