tree 046826822d7e6e8550a7801678ff3ace1c0766ac
parent 2e7e7c265691250d4a1b3ff94fe70b0a05f23e16
author Wenkai Du <wenkai.du@intel.com> 1413397156 -0700
committer chrome-internal-fetch <chrome-internal-fetch@google.com> 1413508459 +0000

broadwell: add RCBA posting read after writing

MEI PCI device has internal logic to flush out the posted writes
before returning completion for non-posted request. When doing a RCBA
write to function disable and then using the PCI CFG RD cycle, need
to do RCBA posting read after writing to it to make sure the write
went through.

As Aaron sugegsted, abstracted function disable path to a common
function.

BUG=chrome-os-partner:33048
TEST=run warm and cold reboot testing

Change-Id: I87aa8ccd604446263fc3621c9a01839a5a75b644
Signed-off-by: Wenkai Du <wenkai.du@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/223715
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>