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List:       haiku-bugs
Subject:    [haiku-bugs] Re: [Haiku] #11619: No USB on Poulsbo hardware
From:       "edglex" <trac () haiku-os ! org>
Date:       2015-05-31 2:25:31
Message-ID: 057.5892ac9e523930683264df4bee16ddd6 () haiku-os ! org
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#11619: No USB on Poulsbo hardware
--------------------------------+----------------------------
   Reporter:  edglex            |      Owner:  mmlr
       Type:  bug               |     Status:  new
   Priority:  normal            |  Milestone:  R1
  Component:  Drivers/USB/EHCI  |    Version:  R1/Development
 Resolution:                    |   Keywords:
 Blocked By:                    |   Blocking:
Has a Patch:  1                 |   Platform:  x86
--------------------------------+----------------------------

Comment (by edglex):

 I think that the offset for the extended capabilities pointer is wrong,
 this seems to be the only reason why the reads and writes would fail: in
 PCI::ReadConfig and WriteConfig we have (size == 4 && (offset & 3) != 0)
 as a condition for failure without even to make a read/write. So
 extendedCapPointer should not be 0xFF/255 as it is (see the read failure
 in "these lines are of interest" comment above).

 I suspect that if this is corrected the writes to disable interrupts/BIOS
 control may work and then the controller might reset correctly. However at
 the moment I have no idea why the offset would be wrong (or even if I am
 just barking up the wrong tree).

--
Ticket URL: <https://dev.haiku-os.org/ticket/11619#comment:14>
Haiku <https://dev.haiku-os.org>
Haiku - the operating system.

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