cvs commit: src/sys/dev/pccbb pccbb.c

[Warner Losh]

imp         2008-08-09 07:41:18 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/pccbb        pccbb.c 
  Log:
  SVN rev 181458 on 2008-08-09 07:41:18Z by imp
  
  After some intial testing, there are even slower cards than the ones
  that I have.  Wait up to 1.1s for the card to become ready.  Document
  what the standards say, and use that to justify the behavior in the
  code: PCI standard says that a card must respond to configuration
  cycles within 2^25 cycles after reset goes high, which is
  approximately 1s.  Therefore, give cards a little break and wait for
  up to 1.1s for VENDOR to become valid.  Only look at the vendor part
  of the ID, since only it can't be 0xffff (although in practice
  vendor/device will always be != 0xfffffffff).  Include detailed
  pointers to standards so epople understand why we're doing what we're
  doing and why it just might be OK.  Make it clear in the timeout
  message that it is just a warning, sinc we try to soldier on as best
  we can anyway.
  
  This should eliminate an error message that r181453 produced on
  certain Atheros cards.
  
  Revision  Changes    Path
  1.169     +24 -13    src/sys/dev/pccbb/pccbb.c