cxl: add RAS status unmasking for CXL

By default the CXL RAS mask registers bits are defaulted to 1's and
suppress all error reporting. If the kernel has negotiated ownership
of error handling for CXL then unmask the mask registers by writing 0s.

PCI_EXP_DEVCTL capability is checked to see uncorrectable or correctable
errors bits are set before unmasking the respective errors.

Acked-by: Bjorn Helgaas <[email protected]>  # pci_regs.h
Reviewed-by: Jonathan Cameron <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/167639402301.778884.12556849214955646539.stgit@djiang5-mobl3.local
Signed-off-by: Dan Williams <[email protected]>

0 files changed, 0 insertions, 0 deletions