From: Larry Finger <Larry.Finger@lwfinger.net>
To: b43-dev@lists.infradead.org
Subject: PIO mode
Date: Tue, 19 Oct 2010 12:02:37 -0500 [thread overview]
Message-ID: <4CBDCF2D.60900@lwfinger.net> (raw)
In-Reply-To: <20101019162258.GO1593@home.pavel.comp>
Paul,
On 10/19/2010 11:22 AM, Paul Fertser wrote:
I do have all the logs you posted.
> MARK 680.950958 Read dword 0xCE035801 from 0x40, devfn: 0
> MARK 680.950966 Wrote dword 0xCE030001 to 0x40, devfn: 0
>
> And indeed there's code (in the free part of the wl driver) responsible for
> that. Adding that to ssb right after pci_set_master doesn't help though :|
Byte 0x41 of the configuration space is the RETRY_TIMEOUT register. Clearing it
is supposed to keep PCI Tx retries from interfering with C3 CPU state. Similar
code appears in ath9k, ipw2100 and ipw2200 drivers. I think we have tried that
patch in the past, but perhaps the code should be added just in case it might
affect some CPU/device combinations.
Larry
next prev parent reply other threads:[~2010-10-19 17:02 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-09 11:53 Issues with 14e4:4315 on "lenovo ideapad s9" - works only after wl Paul Fertser
2010-10-09 18:36 ` Paul Fertser
2010-10-09 20:37 ` Gábor Stefanik
2010-10-09 21:32 ` Paul Fertser
2010-10-09 21:37 ` Gábor Stefanik
2010-10-10 7:21 ` Paul Fertser
2010-10-10 15:39 ` Larry Finger
2010-10-10 17:03 ` Paul Fertser
2010-10-11 1:50 ` Larry Finger
2010-10-11 7:37 ` Rafał Miłecki
2010-10-13 6:58 ` PIO mode (was: Re: Issues with 14e4:4315 on "lenovo ideapad s9" - works only after wl) Paul Fertser
2010-10-17 22:35 ` PIO mode Larry Finger
2010-10-18 4:11 ` Paul Fertser
2010-10-18 19:57 ` Larry Finger
2010-10-19 0:43 ` Paul Fertser
2010-10-19 16:04 ` Larry Finger
2010-10-19 16:22 ` Paul Fertser
2010-10-19 17:02 ` Larry Finger [this message]
2010-10-20 17:37 ` Larry Finger
2010-10-20 17:54 ` Paul Fertser
2010-10-20 18:31 ` Larry Finger
2010-10-20 19:37 ` MMIO trace for "warm" boot of b43 on IdeaPad S9 (was: Re: PIO mode) Paul Fertser
2010-10-20 22:19 ` Larry Finger
2010-10-21 6:05 ` MMIO trace for "warm" boot of b43 on IdeaPad S9 Paul Fertser
2010-10-21 8:53 ` Transfer zeroes via ssh test (was: Re: PIO mode) Paul Fertser
2010-10-21 14:27 ` Larry Finger
2010-10-21 20:55 ` Michael Büsch
2010-10-10 16:50 ` Issues with 14e4:4315 on "lenovo ideapad s9" - works only after wl Gábor Stefanik
2010-10-12 22:12 ` Paul Fertser
2010-10-12 23:05 ` Paul Fertser
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