cvs commit: src/sys/compat/ndis subr_ndis.c subr_ntoskrnl.c

[Bill Paul]

wpaul       2005-11-20 01:29:30 UTC

  FreeBSD src repository

  Modified files:
    sys/compat/ndis      subr_ndis.c subr_ntoskrnl.c 
  Log:
  Correct the API for Windows interupt handling a little. The prototype
  for a Windows ISR is 'BOOLEAN isrfunc(KINTERRUPT *, void *)' meaning
  the ISR get a pointer to the interrupt object and a context pointer,
  and returns TRUE if the ISR determines the interrupt was really generated
  by the associated device, or FALSE if not.
  
  I had mistakenly used 'void isrfunc(void *)' instead. It happens the
  only thing this affects is the internal ndis_intr() ISR in subr_ndis.c,
  but it should be fixed just in case we ever need to register a real
  Windows ISR vi IoConnectInterrupt().
  
  For NDIS miniports that provide a MiniportISR() method, the 'is_our_intr'
  value returned by the method serves as the return value from ndis_isr(),
  and 'call_isr' is used to decide whether or not to schedule the interrupt
  handler via DPC. For drivers that only supply MiniportEnableInterrupt()
  and MiniportDisableInterrupt() methods, call_isr is always TRUE and
  is_our_intr is always FALSE.
  
  In the end, there should be no functional changes, except that now
  ntoskrnl_intr() can terminate early once it finds the ISR that wants
  to service the interrupt.
  
  Revision  Changes    Path
  1.103     +9 -10     src/sys/compat/ndis/subr_ndis.c
  1.84      +4 -1      src/sys/compat/ndis/subr_ntoskrnl.c