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cxl: Report the tunneled operations status

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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>
This commit is contained in:
Philippe Bergheaud
2018-05-14 10:27:36 +02:00
committed by Michael Ellerman
parent 401dca8cbd
commit 497a0790e2
4 changed files with 25 additions and 1 deletions
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7
drivers/misc/cxl/pci.c
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@@ -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;