* Changes in specs
@ 2010-03-31 15:14 Larry Finger
2010-03-31 16:11 ` Rafał Miłecki
0 siblings, 1 reply; 2+ messages in thread
From: Larry Finger @ 2010-03-31 15:14 UTC (permalink / raw)
To: Michael Buesch, John Linville; +Cc: wireless, b43-dev
John Linville ran an MMIO dump on his Netbook while loading the wl
driver. From the output, it was clear that his device does indeed have
an SPROM, but it is in a different location than previous devices we
have encountered. With this information, it was not difficult to find
the test for this situation in the Broadcom code. The revised specs for
this condition are in the first paragraph of
http://bcm-v4.sipsolutions.net/SPROM. In a nutshell, the SPROM is at
offset 0x1000 for chipcommon revisions < 31, and@0x0800 for revisions
>= 31.
I have also discovered what was wrong with the specs that described what
devices do not have an SPROM. The previous version only covers those
devices that are on a PCMCIA bus. The new version of those specs are at
http://bcm-v4.sipsolutions.net/802.11/IsSpromAvailable. As might be
expected, the chipcommon revision is again important for PCI devices.
My workaround for missing SPROM data remains viable, and I plan to
resubmit it as soon as the revised detection routine is ready. Does that
sound reasonable, or should I wait until such a device is found?
Larry
^ permalink raw reply [flat|nested] 2+ messages in thread
* Changes in specs
2010-03-31 15:14 Changes in specs Larry Finger
@ 2010-03-31 16:11 ` Rafał Miłecki
0 siblings, 0 replies; 2+ messages in thread
From: Rafał Miłecki @ 2010-03-31 16:11 UTC (permalink / raw)
To: Larry Finger; +Cc: Michael Buesch, John Linville, wireless, b43-dev
2010/3/31 Larry Finger <Larry.Finger@lwfinger.net>:
> John Linville ran an MMIO dump on his Netbook while loading the wl
> driver. From the output, it was clear that his device does indeed have
> an SPROM, but it is in a different location than previous devices we
> have encountered. With this information, it was not difficult to find
> the test for this situation in the Broadcom code. The revised specs for
> this condition are in the first paragraph of
> http://bcm-v4.sipsolutions.net/SPROM. In a nutshell, the SPROM is at
> offset 0x1000 for chipcommon revisions < 31, and@0x0800 for revisions
>>= 31.
>
> I have also discovered what was wrong with the specs that described what
> devices do not have an SPROM. The previous version only covers those
> devices that are on a PCMCIA bus. The new version of those specs are at
> http://bcm-v4.sipsolutions.net/802.11/IsSpromAvailable. As might be
> expected, the chipcommon revision is again important for PCI devices.
I've is_sprom_available updated.
Will hack on SPROM today.
--
Rafa?
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