freebsd-skq/sys/dev/pccbb
jhb a1cdfbb695 Implement a proper detach method for the PCI-PCI bridge driver.
- Add a pcib_detach() function for the PCI-PCI bridge driver.  It
  tears down the NEW_PCIB and hotplug state including destroying
  resource managers, deleting child devices, and disabling hotplug
  events.
- Add a detach method to the ACPI PCI-PCI bridge driver which calls
  pcib_detach() and then frees the copy of the _PRT interrupt routing
  table.
- Add a detach method to the PCI-Cardbus bridge driver which frees
  the PCI bus resources in addition to calling cbb_detach().
- Explicitly clear any pending hotplug events during attach to ensure
  future events will generate an interrupt.
- If a the Command Completed bit is set in the slot status register
  when the command completion timeout fires, treat it as if the
  command completed and the completion interrupt was just lost rather
  than forcing a detach.
- Don't wait for a Command Completed notification if Command Completion
  interrupts are disabled.  The spec explicitly says no interrupt is
  enabled when clearing CCIE, and on my T400 no interrupt is generated
  when CCIE is changed from cleared to set, either.  In addition, the
  T400 doesn't appear to set the Command Completed bit in the cases
  where it doesn't generate an interrupt, so don't schedule the timer
  either.  (If the CC bit were always set, one could always set the timer
  and rely on the logic of treating CC set as a missed interrupt.)

Reviewed by:	imp (older version)
Differential Revision:	https://reviews.freebsd.org/D6424
2016-05-20 00:03:22 +00:00
..
pccbb_isa.c
pccbb_pci.c Implement a proper detach method for the PCI-PCI bridge driver. 2016-05-20 00:03:22 +00:00
pccbb.c sys/dev: minor spelling fixes. 2016-05-03 03:41:25 +00:00
pccbbdevid.h
pccbbreg.h
pccbbvar.h