platform/x86/intel/vsec: Set OOBMSM to CPU mapping

Add functions, intel_vsec_set/get_mapping(), to set and retrieve the
OOBMSM-to-CPU mapping data in the private data of the parent Intel VSEC
driver. With this mapping information available, other Intel VSEC features
on the same OOBMSM device can easily access and use the mapping data,
allowing each of the OOBMSM features to map to the CPUs they provides data
for.

Signed-off-by: David E. Box <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Ilpo Järvinen <[email protected]>
Signed-off-by: Ilpo Järvinen <[email protected]>

1 files changed, 31 insertions, 0 deletions

diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c
index 4d76f1ac3c8c..711ff4edfe21 100644
--- a/drivers/platform/x86/intel/vsec.c
+++ b/drivers/platform/x86/intel/vsec.c
@@ -44,6 +44,7 @@ enum vsec_device_state {
 struct vsec_priv {
 	struct intel_vsec_platform_info *info;
 	struct device *suppliers[VSEC_FEATURE_COUNT];
+	struct oobmsm_plat_info plat_info;
 	enum vsec_device_state state[VSEC_FEATURE_COUNT];
 	unsigned long found_caps;
 };
@@ -665,6 +666,36 @@ static int intel_vsec_pci_probe(struct pci_dev *pdev, const struct pci_device_id
 	return 0;
 }
 
+int intel_vsec_set_mapping(struct oobmsm_plat_info *plat_info,
+			   struct intel_vsec_device *vsec_dev)
+{
+	struct vsec_priv *priv;
+
+	priv = pci_get_drvdata(vsec_dev->pcidev);
+	if (!priv)
+		return -EINVAL;
+
+	priv->plat_info = *plat_info;
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(intel_vsec_set_mapping, "INTEL_VSEC");
+
+struct oobmsm_plat_info *intel_vsec_get_mapping(struct pci_dev *pdev)
+{
+	struct vsec_priv *priv;
+
+	if (!pci_match_id(intel_vsec_pci_ids, pdev))
+		return ERR_PTR(-EINVAL);
+
+	priv = pci_get_drvdata(pdev);
+	if (!priv)
+		return ERR_PTR(-EINVAL);
+
+	return &priv->plat_info;
+}
+EXPORT_SYMBOL_NS_GPL(intel_vsec_get_mapping, "INTEL_VSEC");
+
 /* DG1 info */
 static struct intel_vsec_header dg1_header = {
 	.length = 0x10,