summaryrefslogtreecommitdiff
path: root/drivers/platform
diff options
context:
space:
mode:
authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2024-04-23 23:46:13 +0300
committerHans de Goede <hdegoede@redhat.com>2024-04-29 14:01:08 +0300
commitc8405cc815151a8b2fa6f7510ede8256228e45da (patch)
treecfbc29fbd69a1104964678fad7eba97883f2859a /drivers/platform
parent1192534407d0f8ab9a0503052777260ae74968c3 (diff)
downloadlinux-c8405cc815151a8b2fa6f7510ede8256228e45da.tar.xz
platform/x86/intel/tpmi: Add additional TPMI header fields
TPMI information header added additional fields in version 2. Some of the reserved fields in version 1 are used to define new fields. Parse new fields and export as part of platform data. These fields include: - PCI segment ID - Partition ID of the package: If a package is represented by more than one PCI device, then partition ID along with cdie_mask, describes the scope. For example to update get/set properties for a compute die, one of the PCI MMIO region is selected from the partition ID. - cdie_mask: Mask of all compute dies in this partition. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Zhang Rui <rui.zhang@intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20240423204619.3946901-5-srinivas.pandruvada@linux.intel.com Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/intel/tpmi.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/platform/x86/intel/tpmi.c b/drivers/platform/x86/intel/tpmi.c
index a5bcb77bcb35..6c0cbccd80bb 100644
--- a/drivers/platform/x86/intel/tpmi.c
+++ b/drivers/platform/x86/intel/tpmi.c
@@ -128,6 +128,9 @@ struct intel_tpmi_info {
* @dev: PCI device number
* @bus: PCI bus number
* @pkg: CPU Package id
+ * @segment: PCI segment id
+ * @partition: Package Partition id
+ * @cdie_mask: Bitmap of compute dies in the current partition
* @reserved: Reserved for future use
* @lock: When set to 1 the register is locked and becomes read-only
* until next reset. Not for use by the OS driver.
@@ -139,7 +142,10 @@ struct tpmi_info_header {
u64 dev:5;
u64 bus:8;
u64 pkg:8;
- u64 reserved:39;
+ u64 segment:8;
+ u64 partition:2;
+ u64 cdie_mask:16;
+ u64 reserved:13;
u64 lock:1;
} __packed;
@@ -667,6 +673,7 @@ static int tpmi_create_devices(struct intel_tpmi_info *tpmi_info)
#define TPMI_INFO_BUS_INFO_OFFSET 0x08
#define TPMI_INFO_MAJOR_VERSION 0x00
+#define TPMI_INFO_MINOR_VERSION 0x02
static int tpmi_process_info(struct intel_tpmi_info *tpmi_info,
struct intel_tpmi_pm_feature *pfs)
@@ -693,6 +700,12 @@ static int tpmi_process_info(struct intel_tpmi_info *tpmi_info,
tpmi_info->plat_info.device_number = header.dev;
tpmi_info->plat_info.function_number = header.fn;
+ if (TPMI_MINOR_VERSION(feature_header) >= TPMI_INFO_MINOR_VERSION) {
+ tpmi_info->plat_info.cdie_mask = header.cdie_mask;
+ tpmi_info->plat_info.partition = header.partition;
+ tpmi_info->plat_info.segment = header.segment;
+ }
+
error_info_header:
iounmap(info_mem);