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From: "David E. Box" <david.e.box@linux.intel.com>
To: irenic.rajneesh@gmail.com, ilpo.jarvinen@linux.intel.com,
	srinivas.pandruvada@linux.intel.com, xi.pardee@linux.intel.com,
	david.e.box@linux.intel.com
Cc: hansg@kernel.org, linux-kernel@vger.kernel.org,
	platform-driver-x86@vger.kernel.org
Subject: [PATCH V2 05/17] platform/x86/intel/pmt: Pass discovery index instead of resource
Date: Tue, 24 Mar 2026 18:48:07 -0700	[thread overview]
Message-ID: <20260325014819.1283566-6-david.e.box@linux.intel.com> (raw)
In-Reply-To: <20260325014819.1283566-1-david.e.box@linux.intel.com>

Change PMT class code to pass a discovery index rather than a direct struct
resource when creating entries. This allows the class to identify the
discovery source generically without assuming PCI BAR resources. For PCI
devices, the index still resolves to a resource in the intel_vsec_device.
Other discovery sources, such as ACPI, can use the same index without
needing a struct resource.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
---

V2 - No changes

 drivers/platform/x86/intel/pmt/class.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/intel/pmt/class.c b/drivers/platform/x86/intel/pmt/class.c
index d652b21261f0..3fcea6a6e763 100644
--- a/drivers/platform/x86/intel/pmt/class.c
+++ b/drivers/platform/x86/intel/pmt/class.c
@@ -207,11 +207,12 @@ EXPORT_SYMBOL_GPL(intel_pmt_class);
 
 static int intel_pmt_populate_entry(struct intel_pmt_entry *entry,
 				    struct intel_vsec_device *ivdev,
-				    struct resource *disc_res)
+				    int idx)
 {
 	struct pci_dev *pci_dev = to_pci_dev(ivdev->dev);
 	struct device *dev = &ivdev->auxdev.dev;
 	struct intel_pmt_header *header = &entry->header;
+	struct resource *disc_res;
 	u8 bir;
 
 	/*
@@ -236,6 +237,7 @@ static int intel_pmt_populate_entry(struct intel_pmt_entry *entry,
 		 * For access_type LOCAL, the base address is as follows:
 		 * base address = end of discovery region + base offset
 		 */
+		disc_res = &ivdev->resource[idx];
 		entry->base_addr = disc_res->end + 1 + header->base_offset;
 
 		/*
@@ -412,7 +414,7 @@ int intel_pmt_dev_create(struct intel_pmt_entry *entry, struct intel_pmt_namespa
 			return ret;
 	}
 
-	ret = intel_pmt_populate_entry(entry, intel_vsec_dev, &intel_vsec_dev->resource[idx]);
+	ret = intel_pmt_populate_entry(entry, intel_vsec_dev, idx);
 	if (ret)
 		return ret;
 
-- 
2.43.0


  parent reply	other threads:[~2026-03-25  1:48 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-25  1:48 [PATCH V2 00/17] Add ACPI-based PMT discovery support for Intel PMC David E. Box
2026-03-25  1:48 ` [PATCH V2 01/17] platform/x86/intel/pmt: Add pre/post decode hooks around header parsing David E. Box
2026-03-25  1:48 ` [PATCH V2 02/17] platform/x86/intel/pmt/crashlog: Split init into pre-decode David E. Box
2026-03-25  1:48 ` [PATCH V2 03/17] platform/x86/intel/pmt/telemetry: Move overlap check to post-decode hook David E. Box
2026-04-07 11:05   ` Ilpo Järvinen
2026-03-25  1:48 ` [PATCH V2 04/17] platform/x86/intel/pmt: Move header decode into common helper David E. Box
2026-04-07 11:05   ` Ilpo Järvinen
2026-03-25  1:48 ` David E. Box [this message]
2026-04-07 11:07   ` [PATCH V2 05/17] platform/x86/intel/pmt: Pass discovery index instead of resource Ilpo Järvinen
2026-03-25  1:48 ` [PATCH V2 06/17] platform/x86/intel/pmt: Unify header fetch and add ACPI source David E. Box
2026-04-07 12:14   ` Ilpo Järvinen
2026-03-25  1:48 ` [PATCH V2 07/17] platform/x86/intel/pmc: Add PMC SSRAM Kconfig description David E. Box
2026-04-07 12:16   ` Ilpo Järvinen
2026-03-25  1:48 ` [PATCH V2 08/17] platform/x86/intel/pmc: Add ACPI PWRM telemetry driver for Nova Lake S David E. Box
2026-04-07 12:56   ` Ilpo Järvinen
2026-03-25  1:48 ` [PATCH V2 09/17] platform/x86/intel/pmc/ssram: Rename probe and PCI ID table for consistency David E. Box
2026-03-25  1:48 ` [PATCH V2 10/17] platform/x86/intel/pmc/ssram: Use fixed-size static pmc array David E. Box
2026-04-07 13:08   ` Ilpo Järvinen
2026-03-25  1:48 ` [PATCH V2 11/17] platform/x86/intel/pmc/ssram: Refactor DEVID/PWRMBASE extraction into helper David E. Box
2026-04-07 13:18   ` Ilpo Järvinen
2026-03-25  1:48 ` [PATCH V2 12/17] platform/x86/intel/pmc/ssram: Add PCI platform data David E. Box
2026-03-25  1:48 ` [PATCH V2 13/17] platform/x86/intel/pmc/ssram: Refactor memory barrier for reentrant probe David E. Box
2026-03-25  1:48 ` [PATCH V2 14/17] platform/x86/intel/pmc/ssram_telemetry: Fix cleanup pattern for __free() variables David E. Box
2026-04-07 13:33   ` Ilpo Järvinen
2026-04-17 22:28     ` David Box
2026-03-25  1:48 ` [PATCH V2 15/17] platform/x86/intel/pmc/ssram: Add ACPI discovery scaffolding David E. Box
2026-03-25  1:48 ` [PATCH V2 16/17] platform/x86/intel/pmc/ssram: Make PMT registration optional David E. Box
2026-03-25  1:48 ` [PATCH V2 17/17] platform/x86/intel/pmc: Add NVL PCI IDs for SSRAM telemetry discovery David E. Box

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