From: David E. Box <david.e.box@linux.intel.com>
Date: Fri, 12 Jun 2026 21:01:42 +0000 (-0700)
Subject: platform/x86/intel/pmt: Add pre/post decode hooks around header parsing
X-Git-Tag: v7.2-rc1~61^2~14
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=acd3b94f8604aeee2b62f8fd18e95a0474546288;p=thirdparty%2Fkernel%2Flinux.git

platform/x86/intel/pmt: Add pre/post decode hooks around header parsing

Add optional pre- and post-decode callbacks to the PMT class so namespaces
can perform setup and cleanup steps around header parsing.

  - Add pmt_pre_decode() and pmt_post_decode() to struct
    intel_pmt_namespace.
  - Update intel_pmt_dev_create() to invoke, in order:
      pre → header_decode() → post.
  - Keep the existing pmt_header_decode() callback unchanged.

No functional changes. This adds flexibility for upcoming decoders while
preserving current behavior.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://patch.msgid.link/b178a341601ca694db99c3b738fe4ed9e0c2bede.1781294741.git.david.e.box@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---

diff --git a/drivers/platform/x86/intel/pmt/class.c b/drivers/platform/x86/intel/pmt/class.c
index b4c9964df8077..9b315334a69ba 100644
--- a/drivers/platform/x86/intel/pmt/class.c
+++ b/drivers/platform/x86/intel/pmt/class.c
@@ -381,10 +381,22 @@ int intel_pmt_dev_create(struct intel_pmt_entry *entry, struct intel_pmt_namespa
 	if (IS_ERR(entry->disc_table))
 		return PTR_ERR(entry->disc_table);
 
+	if (ns->pmt_pre_decode) {
+		ret = ns->pmt_pre_decode(intel_vsec_dev, entry);
+		if (ret)
+			return ret;
+	}
+
 	ret = ns->pmt_header_decode(entry, dev);
 	if (ret)
 		return ret;
 
+	if (ns->pmt_post_decode) {
+		ret = ns->pmt_post_decode(intel_vsec_dev, entry);
+		if (ret)
+			return ret;
+	}
+
 	ret = intel_pmt_populate_entry(entry, intel_vsec_dev, disc_res);
 	if (ret)
 		return ret;
diff --git a/drivers/platform/x86/intel/pmt/class.h b/drivers/platform/x86/intel/pmt/class.h
index 1ae56a5baad23..ff39014b208cc 100644
--- a/drivers/platform/x86/intel/pmt/class.h
+++ b/drivers/platform/x86/intel/pmt/class.h
@@ -62,6 +62,10 @@ struct intel_pmt_namespace {
 	struct xarray *xa;
 	int (*pmt_header_decode)(struct intel_pmt_entry *entry,
 				 struct device *dev);
+	int (*pmt_pre_decode)(struct intel_vsec_device *ivdev,
+			      struct intel_pmt_entry *entry);
+	int (*pmt_post_decode)(struct intel_vsec_device *ivdev,
+			       struct intel_pmt_entry *entry);
 	int (*pmt_add_endpoint)(struct intel_vsec_device *ivdev,
 				struct intel_pmt_entry *entry);
 };