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

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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>
This commit is contained in:
David E. Box 2026-06-12 14:01:42 -07:00 committed by Ilpo Järvinen
parent 3429ae7b2f
commit acd3b94f86
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GPG Key ID: 59AC4F6153E5CE31
2 changed files with 16 additions and 0 deletions
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12
drivers/platform/x86/intel/pmt/class.c
View File

@ -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;

4
drivers/platform/x86/intel/pmt/class.h
View File

@ -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);
};