Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 415 insertions, 0 deletions

diff --git a/drivers/platform/x86/intel/tpmi.c b/drivers/platform/x86/intel/tpmi.c
new file mode 100644
index 000000000..c60733261
--- /dev/null
+++ b/drivers/platform/x86/intel/tpmi.c
@@ -0,0 +1,415 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * intel-tpmi : Driver to enumerate TPMI features and create devices
+ *
+ * Copyright (c) 2023, Intel Corporation.
+ * All Rights Reserved.
+ *
+ * The TPMI (Topology Aware Register and PM Capsule Interface) provides a
+ * flexible, extendable and PCIe enumerable MMIO interface for PM features.
+ *
+ * For example Intel RAPL (Running Average Power Limit) provides a MMIO
+ * interface using TPMI. This has advantage over traditional MSR
+ * (Model Specific Register) interface, where a thread needs to be scheduled
+ * on the target CPU to read or write. Also the RAPL features vary between
+ * CPU models, and hence lot of model specific code. Here TPMI provides an
+ * architectural interface by providing hierarchical tables and fields,
+ * which will not need any model specific implementation.
+ *
+ * The TPMI interface uses a PCI VSEC structure to expose the location of
+ * MMIO region.
+ *
+ * This VSEC structure is present in the PCI configuration space of the
+ * Intel Out-of-Band (OOB) device, which  is handled by the Intel VSEC
+ * driver. The Intel VSEC driver parses VSEC structures present in the PCI
+ * configuration space of the given device and creates an auxiliary device
+ * object for each of them. In particular, it creates an auxiliary device
+ * object representing TPMI that can be bound by an auxiliary driver.
+ *
+ * This TPMI driver will bind to the TPMI auxiliary device object created
+ * by the Intel VSEC driver.
+ *
+ * The TPMI specification defines a PFS (PM Feature Structure) table.
+ * This table is present in the TPMI MMIO region. The starting address
+ * of PFS is derived from the tBIR (Bar Indicator Register) and "Address"
+ * field from the VSEC header.
+ *
+ * Each TPMI PM feature has one entry in the PFS with a unique TPMI
+ * ID and its access details. The TPMI driver creates device nodes
+ * for the supported PM features.
+ *
+ * The names of the devices created by the TPMI driver start with the
+ * "intel_vsec.tpmi-" prefix which is followed by a specific name of the
+ * given PM feature (for example, "intel_vsec.tpmi-rapl.0").
+ *
+ * The device nodes are create by using interface "intel_vsec_add_aux()"
+ * provided by the Intel VSEC driver.
+ */
+
+#include <linux/auxiliary_bus.h>
+#include <linux/intel_tpmi.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "vsec.h"
+
+/**
+ * struct intel_tpmi_pfs_entry - TPMI PM Feature Structure (PFS) entry
+ * @tpmi_id:	TPMI feature identifier (what the feature is and its data format).
+ * @num_entries: Number of feature interface instances present in the PFS.
+ *		 This represents the maximum number of Power domains in the SoC.
+ * @entry_size:	Interface instance entry size in 32-bit words.
+ * @cap_offset:	Offset from the PM_Features base address to the base of the PM VSEC
+ *		register bank in KB.
+ * @attribute:	Feature attribute: 0=BIOS. 1=OS. 2-3=Reserved.
+ * @reserved:	Bits for use in the future.
+ *
+ * Represents one TPMI feature entry data in the PFS retrieved as is
+ * from the hardware.
+ */
+struct intel_tpmi_pfs_entry {
+	u64 tpmi_id:8;
+	u64 num_entries:8;
+	u64 entry_size:16;
+	u64 cap_offset:16;
+	u64 attribute:2;
+	u64 reserved:14;
+} __packed;
+
+/**
+ * struct intel_tpmi_pm_feature - TPMI PM Feature information for a TPMI ID
+ * @pfs_header:	PFS header retireved from the hardware.
+ * @vsec_offset: Starting MMIO address for this feature in bytes. Essentially
+ *		 this offset = "Address" from VSEC header + PFS Capability
+ *		 offset for this feature entry.
+ *
+ * Represents TPMI instance information for one TPMI ID.
+ */
+struct intel_tpmi_pm_feature {
+	struct intel_tpmi_pfs_entry pfs_header;
+	unsigned int vsec_offset;
+};
+
+/**
+ * struct intel_tpmi_info - TPMI information for all IDs in an instance
+ * @tpmi_features:	Pointer to a list of TPMI feature instances
+ * @vsec_dev:		Pointer to intel_vsec_device structure for this TPMI device
+ * @feature_count:	Number of TPMI of TPMI instances pointed by tpmi_features
+ * @pfs_start:		Start of PFS offset for the TPMI instances in this device
+ * @plat_info:		Stores platform info which can be used by the client drivers
+ *
+ * Stores the information for all TPMI devices enumerated from a single PCI device.
+ */
+struct intel_tpmi_info {
+	struct intel_tpmi_pm_feature *tpmi_features;
+	struct intel_vsec_device *vsec_dev;
+	int feature_count;
+	u64 pfs_start;
+	struct intel_tpmi_plat_info plat_info;
+};
+
+/**
+ * struct tpmi_info_header - CPU package ID to PCI device mapping information
+ * @fn:		PCI function number
+ * @dev:	PCI device number
+ * @bus:	PCI bus number
+ * @pkg:	CPU Package id
+ * @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.
+ *
+ * The structure to read hardware provided mapping information.
+ */
+struct tpmi_info_header {
+	u64 fn:3;
+	u64 dev:5;
+	u64 bus:8;
+	u64 pkg:8;
+	u64 reserved:39;
+	u64 lock:1;
+} __packed;
+
+/*
+ * List of supported TMPI IDs.
+ * Some TMPI IDs are not used by Linux, so the numbers are not consecutive.
+ */
+enum intel_tpmi_id {
+	TPMI_ID_RAPL = 0, /* Running Average Power Limit */
+	TPMI_ID_PEM = 1, /* Power and Perf excursion Monitor */
+	TPMI_ID_UNCORE = 2, /* Uncore Frequency Scaling */
+	TPMI_ID_SST = 5, /* Speed Select Technology */
+	TPMI_INFO_ID = 0x81, /* Special ID for PCI BDF and Package ID information */
+};
+
+/* Used during auxbus device creation */
+static DEFINE_IDA(intel_vsec_tpmi_ida);
+
+struct intel_tpmi_plat_info *tpmi_get_platform_data(struct auxiliary_device *auxdev)
+{
+	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
+
+	return vsec_dev->priv_data;
+}
+EXPORT_SYMBOL_NS_GPL(tpmi_get_platform_data, INTEL_TPMI);
+
+int tpmi_get_resource_count(struct auxiliary_device *auxdev)
+{
+	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
+
+	if (vsec_dev)
+		return vsec_dev->num_resources;
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(tpmi_get_resource_count, INTEL_TPMI);
+
+struct resource *tpmi_get_resource_at_index(struct auxiliary_device *auxdev, int index)
+{
+	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
+
+	if (vsec_dev && index < vsec_dev->num_resources)
+		return &vsec_dev->resource[index];
+
+	return NULL;
+}
+EXPORT_SYMBOL_NS_GPL(tpmi_get_resource_at_index, INTEL_TPMI);
+
+static const char *intel_tpmi_name(enum intel_tpmi_id id)
+{
+	switch (id) {
+	case TPMI_ID_RAPL:
+		return "rapl";
+	case TPMI_ID_PEM:
+		return "pem";
+	case TPMI_ID_UNCORE:
+		return "uncore";
+	case TPMI_ID_SST:
+		return "sst";
+	default:
+		return NULL;
+	}
+}
+
+/* String Length for tpmi-"feature_name(upto 8 bytes)" */
+#define TPMI_FEATURE_NAME_LEN	14
+
+static int tpmi_create_device(struct intel_tpmi_info *tpmi_info,
+			      struct intel_tpmi_pm_feature *pfs,
+			      u64 pfs_start)
+{
+	struct intel_vsec_device *vsec_dev = tpmi_info->vsec_dev;
+	char feature_id_name[TPMI_FEATURE_NAME_LEN];
+	struct intel_vsec_device *feature_vsec_dev;
+	struct resource *res, *tmp;
+	const char *name;
+	int ret, i;
+
+	name = intel_tpmi_name(pfs->pfs_header.tpmi_id);
+	if (!name)
+		return -EOPNOTSUPP;
+
+	feature_vsec_dev = kzalloc(sizeof(*feature_vsec_dev), GFP_KERNEL);
+	if (!feature_vsec_dev)
+		return -ENOMEM;
+
+	res = kcalloc(pfs->pfs_header.num_entries, sizeof(*res), GFP_KERNEL);
+	if (!res) {
+		ret = -ENOMEM;
+		goto free_vsec;
+	}
+
+	snprintf(feature_id_name, sizeof(feature_id_name), "tpmi-%s", name);
+
+	for (i = 0, tmp = res; i < pfs->pfs_header.num_entries; i++, tmp++) {
+		u64 entry_size_bytes = pfs->pfs_header.entry_size * 4;
+
+		tmp->start = pfs->vsec_offset + entry_size_bytes * i;
+		tmp->end = tmp->start + entry_size_bytes - 1;
+		tmp->flags = IORESOURCE_MEM;
+	}
+
+	feature_vsec_dev->pcidev = vsec_dev->pcidev;
+	feature_vsec_dev->resource = res;
+	feature_vsec_dev->num_resources = pfs->pfs_header.num_entries;
+	feature_vsec_dev->priv_data = &tpmi_info->plat_info;
+	feature_vsec_dev->priv_data_size = sizeof(tpmi_info->plat_info);
+	feature_vsec_dev->ida = &intel_vsec_tpmi_ida;
+
+	/*
+	 * intel_vsec_add_aux() is resource managed, no explicit
+	 * delete is required on error or on module unload.
+	 */
+	ret = intel_vsec_add_aux(vsec_dev->pcidev, &vsec_dev->auxdev.dev,
+				 feature_vsec_dev, feature_id_name);
+	if (ret)
+		goto free_res;
+
+	return 0;
+
+free_res:
+	kfree(res);
+free_vsec:
+	kfree(feature_vsec_dev);
+
+	return ret;
+}
+
+static int tpmi_create_devices(struct intel_tpmi_info *tpmi_info)
+{
+	struct intel_vsec_device *vsec_dev = tpmi_info->vsec_dev;
+	int ret, i;
+
+	for (i = 0; i < vsec_dev->num_resources; i++) {
+		ret = tpmi_create_device(tpmi_info, &tpmi_info->tpmi_features[i],
+					 tpmi_info->pfs_start);
+		/*
+		 * Fail, if the supported features fails to create device,
+		 * otherwise, continue. Even if one device failed to create,
+		 * fail the loading of driver. Since intel_vsec_add_aux()
+		 * is resource managed, no clean up is required for the
+		 * successfully created devices.
+		 */
+		if (ret && ret != -EOPNOTSUPP)
+			return ret;
+	}
+
+	return 0;
+}
+
+#define TPMI_INFO_BUS_INFO_OFFSET	0x08
+
+static int tpmi_process_info(struct intel_tpmi_info *tpmi_info,
+			     struct intel_tpmi_pm_feature *pfs)
+{
+	struct tpmi_info_header header;
+	void __iomem *info_mem;
+
+	info_mem = ioremap(pfs->vsec_offset + TPMI_INFO_BUS_INFO_OFFSET,
+			   pfs->pfs_header.entry_size * 4 - TPMI_INFO_BUS_INFO_OFFSET);
+	if (!info_mem)
+		return -ENOMEM;
+
+	memcpy_fromio(&header, info_mem, sizeof(header));
+
+	tpmi_info->plat_info.package_id = header.pkg;
+	tpmi_info->plat_info.bus_number = header.bus;
+	tpmi_info->plat_info.device_number = header.dev;
+	tpmi_info->plat_info.function_number = header.fn;
+
+	iounmap(info_mem);
+
+	return 0;
+}
+
+static int tpmi_fetch_pfs_header(struct intel_tpmi_pm_feature *pfs, u64 start, int size)
+{
+	void __iomem *pfs_mem;
+
+	pfs_mem = ioremap(start, size);
+	if (!pfs_mem)
+		return -ENOMEM;
+
+	memcpy_fromio(&pfs->pfs_header, pfs_mem, sizeof(pfs->pfs_header));
+
+	iounmap(pfs_mem);
+
+	return 0;
+}
+
+static int intel_vsec_tpmi_init(struct auxiliary_device *auxdev)
+{
+	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
+	struct pci_dev *pci_dev = vsec_dev->pcidev;
+	struct intel_tpmi_info *tpmi_info;
+	u64 pfs_start = 0;
+	int i;
+
+	tpmi_info = devm_kzalloc(&auxdev->dev, sizeof(*tpmi_info), GFP_KERNEL);
+	if (!tpmi_info)
+		return -ENOMEM;
+
+	tpmi_info->vsec_dev = vsec_dev;
+	tpmi_info->feature_count = vsec_dev->num_resources;
+	tpmi_info->plat_info.bus_number = pci_dev->bus->number;
+
+	tpmi_info->tpmi_features = devm_kcalloc(&auxdev->dev, vsec_dev->num_resources,
+						sizeof(*tpmi_info->tpmi_features),
+						GFP_KERNEL);
+	if (!tpmi_info->tpmi_features)
+		return -ENOMEM;
+
+	for (i = 0; i < vsec_dev->num_resources; i++) {
+		struct intel_tpmi_pm_feature *pfs;
+		struct resource *res;
+		u64 res_start;
+		int size, ret;
+
+		pfs = &tpmi_info->tpmi_features[i];
+
+		res = &vsec_dev->resource[i];
+		if (!res)
+			continue;
+
+		res_start = res->start;
+		size = resource_size(res);
+		if (size < 0)
+			continue;
+
+		ret = tpmi_fetch_pfs_header(pfs, res_start, size);
+		if (ret)
+			continue;
+
+		if (!pfs_start)
+			pfs_start = res_start;
+
+		pfs->pfs_header.cap_offset *= 1024;
+
+		pfs->vsec_offset = pfs_start + pfs->pfs_header.cap_offset;
+
+		/*
+		 * Process TPMI_INFO to get PCI device to CPU package ID.
+		 * Device nodes for TPMI features are not created in this
+		 * for loop. So, the mapping information will be available
+		 * when actual device nodes created outside this
+		 * loop via tpmi_create_devices().
+		 */
+		if (pfs->pfs_header.tpmi_id == TPMI_INFO_ID)
+			tpmi_process_info(tpmi_info, pfs);
+	}
+
+	tpmi_info->pfs_start = pfs_start;
+
+	auxiliary_set_drvdata(auxdev, tpmi_info);
+
+	return tpmi_create_devices(tpmi_info);
+}
+
+static int tpmi_probe(struct auxiliary_device *auxdev,
+		      const struct auxiliary_device_id *id)
+{
+	return intel_vsec_tpmi_init(auxdev);
+}
+
+/*
+ * Remove callback is not needed currently as there is no
+ * cleanup required. All memory allocs are device managed. All
+ * devices created by this modules are also device managed.
+ */
+
+static const struct auxiliary_device_id tpmi_id_table[] = {
+	{ .name = "intel_vsec.tpmi" },
+	{}
+};
+MODULE_DEVICE_TABLE(auxiliary, tpmi_id_table);
+
+static struct auxiliary_driver tpmi_aux_driver = {
+	.id_table	= tpmi_id_table,
+	.probe		= tpmi_probe,
+};
+
+module_auxiliary_driver(tpmi_aux_driver);
+
+MODULE_IMPORT_NS(INTEL_VSEC);
+MODULE_DESCRIPTION("Intel TPMI enumeration module");
+MODULE_LICENSE("GPL");