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Box" To: hansg@kernel.org, ilpo.jarvinen@linux.intel.com, irenic.rajneesh@gmail.com Cc: "David E. Box" , linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, srinivas.pandruvada@linux.intel.com, xi.pardee@linux.intel.com Subject: [PATCH v8 03/15] platform/x86/intel/pmt/telemetry: Move overlap check to post-decode hook Date: Fri, 12 Jun 2026 14:01:44 -0700 Message-ID: <2f5e429a38e22eb45fcfaaca4e037fa395d4f199.1781294741.git.david.e.box@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Update the telemetry namespace to use the new PMT class pre/post decode interface. The overlap check, which previously occurred during header decode, is now performed in the post-decode hook once header fields are populated. This preserves existing behavior while reusing the same header decode logic across PMT drivers. Signed-off-by: David E. Box Reviewed-by: Ilpo J=C3=A4rvinen --- V8 - No changes V7 - No changes V6 - No changes V5 - No changes V4 - No changes V3 - No changes V2 - No changes drivers/platform/x86/intel/pmt/class.h | 1 + drivers/platform/x86/intel/pmt/telemetry.c | 24 ++++++++++++++-------- 2 files changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/platform/x86/intel/pmt/class.h b/drivers/platform/x86/= intel/pmt/class.h index ff39014b208c..8a0db0ef58c1 100644 --- a/drivers/platform/x86/intel/pmt/class.h +++ b/drivers/platform/x86/intel/pmt/class.h @@ -37,6 +37,7 @@ struct intel_pmt_header { u32 size; u32 guid; u8 access_type; + u8 telem_type; }; =20 struct intel_pmt_entry { diff --git a/drivers/platform/x86/intel/pmt/telemetry.c b/drivers/platform/= x86/intel/pmt/telemetry.c index bdc7c24a3678..d22f633638be 100644 --- a/drivers/platform/x86/intel/pmt/telemetry.c +++ b/drivers/platform/x86/intel/pmt/telemetry.c @@ -58,14 +58,9 @@ struct pmt_telem_priv { struct intel_pmt_entry entry[]; }; =20 -static bool pmt_telem_region_overlaps(struct intel_pmt_entry *entry, - struct device *dev) +static bool pmt_telem_region_overlaps(struct device *dev, u32 guid, u32 ty= pe) { - u32 guid =3D readl(entry->disc_table + TELEM_GUID_OFFSET); - if (intel_pmt_is_early_client_hw(dev)) { - u32 type =3D TELEM_TYPE(readl(entry->disc_table)); - if ((type =3D=3D TELEM_TYPE_PUNIT_FIXED) || (guid =3D=3D TELEM_CLIENT_FIXED_BLOCK_GUID)) return true; @@ -80,15 +75,25 @@ static int pmt_telem_header_decode(struct intel_pmt_ent= ry *entry, void __iomem *disc_table =3D entry->disc_table; struct intel_pmt_header *header =3D &entry->header; =20 - if (pmt_telem_region_overlaps(entry, dev)) - return 1; - header->access_type =3D TELEM_ACCESS(readl(disc_table)); header->guid =3D readl(disc_table + TELEM_GUID_OFFSET); header->base_offset =3D readl(disc_table + TELEM_BASE_OFFSET); =20 /* Size is measured in DWORDS, but accessor returns bytes */ header->size =3D TELEM_SIZE(readl(disc_table)); + header->telem_type =3D TELEM_TYPE(readl(entry->disc_table)); + + return 0; +} + +static int pmt_telem_post_decode(struct intel_vsec_device *ivdev, + struct intel_pmt_entry *entry) +{ + struct intel_pmt_header *header =3D &entry->header; + struct device *dev =3D &ivdev->auxdev.dev; + + if (pmt_telem_region_overlaps(dev, header->guid, header->telem_type)) + return 1; =20 /* * Some devices may expose non-functioning entries that are @@ -131,6 +136,7 @@ static struct intel_pmt_namespace pmt_telem_ns =3D { .name =3D "telem", .xa =3D &telem_array, .pmt_header_decode =3D pmt_telem_header_decode, + .pmt_post_decode =3D pmt_telem_post_decode, .pmt_add_endpoint =3D pmt_telem_add_endpoint, }; =20 --=20 2.43.0