cxl: Report the tunneled operations status

Failure to synchronize the tunneled operations does not prevent
the initialization of the cxl card. This patch reports the tunneled
operations status via /sys.

Signed-off-by: Philippe Bergheaud <felix@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index 4eb893284af2..4d6736f9d463 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -1742,9 +1742,14 @@ static int cxl_configure_adapter(struct cxl *adapter, struct pci_dev *dev)
         /* Required for devices using CAPP DMA mode, harmless for others */
         pci_set_master(dev);
 
-        if (cxl_is_power9())
+        adapter->tunneled_ops_supported = false;
+
+        if (cxl_is_power9()) {
                 if (pnv_pci_set_tunnel_bar(dev, 0x00020000E0000000ull, 1))
                         dev_info(&dev->dev, "Tunneled operations unsupported\n");
+                else
+                        adapter->tunneled_ops_supported = true;
+        }
 
         if ((rc = pnv_phb_to_cxl_mode(dev, adapter->native->sl_ops->capi_mode)))
                 goto err;