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, 631 insertions, 0 deletions

diff --git a/drivers/ufs/host/ufshcd-pci.c b/drivers/ufs/host/ufshcd-pci.c
new file mode 100644
index 000000000..1c91f43e1
--- /dev/null
+++ b/drivers/ufs/host/ufshcd-pci.c
@@ -0,0 +1,631 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Universal Flash Storage Host controller PCI glue driver
+ *
+ * Copyright (C) 2011-2013 Samsung India Software Operations
+ *
+ * Authors:
+ *	Santosh Yaraganavi <santosh.sy@samsung.com>
+ *	Vinayak Holikatti <h.vinayak@samsung.com>
+ */
+
+#include <ufs/ufshcd.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm_qos.h>
+#include <linux/debugfs.h>
+#include <linux/uuid.h>
+#include <linux/acpi.h>
+#include <linux/gpio/consumer.h>
+
+struct ufs_host {
+	void (*late_init)(struct ufs_hba *hba);
+};
+
+enum intel_ufs_dsm_func_id {
+	INTEL_DSM_FNS		=  0,
+	INTEL_DSM_RESET		=  1,
+};
+
+struct intel_host {
+	struct ufs_host ufs_host;
+	u32		dsm_fns;
+	u32		active_ltr;
+	u32		idle_ltr;
+	struct dentry	*debugfs_root;
+	struct gpio_desc *reset_gpio;
+};
+
+static const guid_t intel_dsm_guid =
+	GUID_INIT(0x1A4832A0, 0x7D03, 0x43CA,
+		  0xB0, 0x20, 0xF6, 0xDC, 0xD1, 0x2A, 0x19, 0x50);
+
+static bool __intel_dsm_supported(struct intel_host *host,
+				  enum intel_ufs_dsm_func_id fn)
+{
+	return fn < 32 && fn >= 0 && (host->dsm_fns & (1u << fn));
+}
+
+#define INTEL_DSM_SUPPORTED(host, name) \
+	__intel_dsm_supported(host, INTEL_DSM_##name)
+
+static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
+		       unsigned int fn, u32 *result)
+{
+	union acpi_object *obj;
+	int err = 0;
+	size_t len;
+
+	obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL);
+	if (!obj)
+		return -EOPNOTSUPP;
+
+	if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	len = min_t(size_t, obj->buffer.length, 4);
+
+	*result = 0;
+	memcpy(result, obj->buffer.pointer, len);
+out:
+	ACPI_FREE(obj);
+
+	return err;
+}
+
+static int intel_dsm(struct intel_host *intel_host, struct device *dev,
+		     unsigned int fn, u32 *result)
+{
+	if (!__intel_dsm_supported(intel_host, fn))
+		return -EOPNOTSUPP;
+
+	return __intel_dsm(intel_host, dev, fn, result);
+}
+
+static void intel_dsm_init(struct intel_host *intel_host, struct device *dev)
+{
+	int err;
+
+	err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);
+	dev_dbg(dev, "DSM fns %#x, error %d\n", intel_host->dsm_fns, err);
+}
+
+static int ufs_intel_hce_enable_notify(struct ufs_hba *hba,
+				       enum ufs_notify_change_status status)
+{
+	/* Cannot enable ICE until after HC enable */
+	if (status == POST_CHANGE && hba->caps & UFSHCD_CAP_CRYPTO) {
+		u32 hce = ufshcd_readl(hba, REG_CONTROLLER_ENABLE);
+
+		hce |= CRYPTO_GENERAL_ENABLE;
+		ufshcd_writel(hba, hce, REG_CONTROLLER_ENABLE);
+	}
+
+	return 0;
+}
+
+static int ufs_intel_disable_lcc(struct ufs_hba *hba)
+{
+	u32 attr = UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE);
+	u32 lcc_enable = 0;
+
+	ufshcd_dme_get(hba, attr, &lcc_enable);
+	if (lcc_enable)
+		ufshcd_disable_host_tx_lcc(hba);
+
+	return 0;
+}
+
+static int ufs_intel_link_startup_notify(struct ufs_hba *hba,
+					 enum ufs_notify_change_status status)
+{
+	int err = 0;
+
+	switch (status) {
+	case PRE_CHANGE:
+		err = ufs_intel_disable_lcc(hba);
+		break;
+	case POST_CHANGE:
+		break;
+	default:
+		break;
+	}
+
+	return err;
+}
+
+static int ufs_intel_set_lanes(struct ufs_hba *hba, u32 lanes)
+{
+	struct ufs_pa_layer_attr pwr_info = hba->pwr_info;
+	int ret;
+
+	pwr_info.lane_rx = lanes;
+	pwr_info.lane_tx = lanes;
+	ret = ufshcd_config_pwr_mode(hba, &pwr_info);
+	if (ret)
+		dev_err(hba->dev, "%s: Setting %u lanes, err = %d\n",
+			__func__, lanes, ret);
+	return ret;
+}
+
+static int ufs_intel_lkf_pwr_change_notify(struct ufs_hba *hba,
+				enum ufs_notify_change_status status,
+				struct ufs_pa_layer_attr *dev_max_params,
+				struct ufs_pa_layer_attr *dev_req_params)
+{
+	int err = 0;
+
+	switch (status) {
+	case PRE_CHANGE:
+		if (ufshcd_is_hs_mode(dev_max_params) &&
+		    (hba->pwr_info.lane_rx != 2 || hba->pwr_info.lane_tx != 2))
+			ufs_intel_set_lanes(hba, 2);
+		memcpy(dev_req_params, dev_max_params, sizeof(*dev_req_params));
+		break;
+	case POST_CHANGE:
+		if (ufshcd_is_hs_mode(dev_req_params)) {
+			u32 peer_granularity;
+
+			usleep_range(1000, 1250);
+			err = ufshcd_dme_peer_get(hba, UIC_ARG_MIB(PA_GRANULARITY),
+						  &peer_granularity);
+		}
+		break;
+	default:
+		break;
+	}
+
+	return err;
+}
+
+static int ufs_intel_lkf_apply_dev_quirks(struct ufs_hba *hba)
+{
+	u32 granularity, peer_granularity;
+	u32 pa_tactivate, peer_pa_tactivate;
+	int ret;
+
+	ret = ufshcd_dme_get(hba, UIC_ARG_MIB(PA_GRANULARITY), &granularity);
+	if (ret)
+		goto out;
+
+	ret = ufshcd_dme_peer_get(hba, UIC_ARG_MIB(PA_GRANULARITY), &peer_granularity);
+	if (ret)
+		goto out;
+
+	ret = ufshcd_dme_get(hba, UIC_ARG_MIB(PA_TACTIVATE), &pa_tactivate);
+	if (ret)
+		goto out;
+
+	ret = ufshcd_dme_peer_get(hba, UIC_ARG_MIB(PA_TACTIVATE), &peer_pa_tactivate);
+	if (ret)
+		goto out;
+
+	if (granularity == peer_granularity) {
+		u32 new_peer_pa_tactivate = pa_tactivate + 2;
+
+		ret = ufshcd_dme_peer_set(hba, UIC_ARG_MIB(PA_TACTIVATE), new_peer_pa_tactivate);
+	}
+out:
+	return ret;
+}
+
+#define INTEL_ACTIVELTR		0x804
+#define INTEL_IDLELTR		0x808
+
+#define INTEL_LTR_REQ		BIT(15)
+#define INTEL_LTR_SCALE_MASK	GENMASK(11, 10)
+#define INTEL_LTR_SCALE_1US	(2 << 10)
+#define INTEL_LTR_SCALE_32US	(3 << 10)
+#define INTEL_LTR_VALUE_MASK	GENMASK(9, 0)
+
+static void intel_cache_ltr(struct ufs_hba *hba)
+{
+	struct intel_host *host = ufshcd_get_variant(hba);
+
+	host->active_ltr = readl(hba->mmio_base + INTEL_ACTIVELTR);
+	host->idle_ltr = readl(hba->mmio_base + INTEL_IDLELTR);
+}
+
+static void intel_ltr_set(struct device *dev, s32 val)
+{
+	struct ufs_hba *hba = dev_get_drvdata(dev);
+	struct intel_host *host = ufshcd_get_variant(hba);
+	u32 ltr;
+
+	pm_runtime_get_sync(dev);
+
+	/*
+	 * Program latency tolerance (LTR) accordingly what has been asked
+	 * by the PM QoS layer or disable it in case we were passed
+	 * negative value or PM_QOS_LATENCY_ANY.
+	 */
+	ltr = readl(hba->mmio_base + INTEL_ACTIVELTR);
+
+	if (val == PM_QOS_LATENCY_ANY || val < 0) {
+		ltr &= ~INTEL_LTR_REQ;
+	} else {
+		ltr |= INTEL_LTR_REQ;
+		ltr &= ~INTEL_LTR_SCALE_MASK;
+		ltr &= ~INTEL_LTR_VALUE_MASK;
+
+		if (val > INTEL_LTR_VALUE_MASK) {
+			val >>= 5;
+			if (val > INTEL_LTR_VALUE_MASK)
+				val = INTEL_LTR_VALUE_MASK;
+			ltr |= INTEL_LTR_SCALE_32US | val;
+		} else {
+			ltr |= INTEL_LTR_SCALE_1US | val;
+		}
+	}
+
+	if (ltr == host->active_ltr)
+		goto out;
+
+	writel(ltr, hba->mmio_base + INTEL_ACTIVELTR);
+	writel(ltr, hba->mmio_base + INTEL_IDLELTR);
+
+	/* Cache the values into intel_host structure */
+	intel_cache_ltr(hba);
+out:
+	pm_runtime_put(dev);
+}
+
+static void intel_ltr_expose(struct device *dev)
+{
+	dev->power.set_latency_tolerance = intel_ltr_set;
+	dev_pm_qos_expose_latency_tolerance(dev);
+}
+
+static void intel_ltr_hide(struct device *dev)
+{
+	dev_pm_qos_hide_latency_tolerance(dev);
+	dev->power.set_latency_tolerance = NULL;
+}
+
+static void intel_add_debugfs(struct ufs_hba *hba)
+{
+	struct dentry *dir = debugfs_create_dir(dev_name(hba->dev), NULL);
+	struct intel_host *host = ufshcd_get_variant(hba);
+
+	intel_cache_ltr(hba);
+
+	host->debugfs_root = dir;
+	debugfs_create_x32("active_ltr", 0444, dir, &host->active_ltr);
+	debugfs_create_x32("idle_ltr", 0444, dir, &host->idle_ltr);
+}
+
+static void intel_remove_debugfs(struct ufs_hba *hba)
+{
+	struct intel_host *host = ufshcd_get_variant(hba);
+
+	debugfs_remove_recursive(host->debugfs_root);
+}
+
+static int ufs_intel_device_reset(struct ufs_hba *hba)
+{
+	struct intel_host *host = ufshcd_get_variant(hba);
+
+	if (INTEL_DSM_SUPPORTED(host, RESET)) {
+		u32 result = 0;
+		int err;
+
+		err = intel_dsm(host, hba->dev, INTEL_DSM_RESET, &result);
+		if (!err && !result)
+			err = -EIO;
+		if (err)
+			dev_err(hba->dev, "%s: DSM error %d result %u\n",
+				__func__, err, result);
+		return err;
+	}
+
+	if (!host->reset_gpio)
+		return -EOPNOTSUPP;
+
+	gpiod_set_value_cansleep(host->reset_gpio, 1);
+	usleep_range(10, 15);
+
+	gpiod_set_value_cansleep(host->reset_gpio, 0);
+	usleep_range(10, 15);
+
+	return 0;
+}
+
+static struct gpio_desc *ufs_intel_get_reset_gpio(struct device *dev)
+{
+	/* GPIO in _DSD has active low setting */
+	return devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+}
+
+static int ufs_intel_common_init(struct ufs_hba *hba)
+{
+	struct intel_host *host;
+
+	hba->caps |= UFSHCD_CAP_RPM_AUTOSUSPEND;
+
+	host = devm_kzalloc(hba->dev, sizeof(*host), GFP_KERNEL);
+	if (!host)
+		return -ENOMEM;
+	ufshcd_set_variant(hba, host);
+	intel_dsm_init(host, hba->dev);
+	if (INTEL_DSM_SUPPORTED(host, RESET)) {
+		if (hba->vops->device_reset)
+			hba->caps |= UFSHCD_CAP_DEEPSLEEP;
+	} else {
+		if (hba->vops->device_reset)
+			host->reset_gpio = ufs_intel_get_reset_gpio(hba->dev);
+		if (IS_ERR(host->reset_gpio)) {
+			dev_err(hba->dev, "%s: failed to get reset GPIO, error %ld\n",
+				__func__, PTR_ERR(host->reset_gpio));
+			host->reset_gpio = NULL;
+		}
+		if (host->reset_gpio) {
+			gpiod_set_value_cansleep(host->reset_gpio, 0);
+			hba->caps |= UFSHCD_CAP_DEEPSLEEP;
+		}
+	}
+	intel_ltr_expose(hba->dev);
+	intel_add_debugfs(hba);
+	return 0;
+}
+
+static void ufs_intel_common_exit(struct ufs_hba *hba)
+{
+	intel_remove_debugfs(hba);
+	intel_ltr_hide(hba->dev);
+}
+
+static int ufs_intel_resume(struct ufs_hba *hba, enum ufs_pm_op op)
+{
+	if (ufshcd_is_link_hibern8(hba)) {
+		int ret = ufshcd_uic_hibern8_exit(hba);
+
+		if (!ret) {
+			ufshcd_set_link_active(hba);
+		} else {
+			dev_err(hba->dev, "%s: hibern8 exit failed %d\n",
+				__func__, ret);
+			/*
+			 * Force reset and restore. Any other actions can lead
+			 * to an unrecoverable state.
+			 */
+			ufshcd_set_link_off(hba);
+		}
+	}
+
+	return 0;
+}
+
+static int ufs_intel_ehl_init(struct ufs_hba *hba)
+{
+	hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;
+	return ufs_intel_common_init(hba);
+}
+
+static void ufs_intel_lkf_late_init(struct ufs_hba *hba)
+{
+	/* LKF always needs a full reset, so set PM accordingly */
+	if (hba->caps & UFSHCD_CAP_DEEPSLEEP) {
+		hba->spm_lvl = UFS_PM_LVL_6;
+		hba->rpm_lvl = UFS_PM_LVL_6;
+	} else {
+		hba->spm_lvl = UFS_PM_LVL_5;
+		hba->rpm_lvl = UFS_PM_LVL_5;
+	}
+}
+
+static int ufs_intel_lkf_init(struct ufs_hba *hba)
+{
+	struct ufs_host *ufs_host;
+	int err;
+
+	hba->nop_out_timeout = 200;
+	hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;
+	hba->caps |= UFSHCD_CAP_CRYPTO;
+	err = ufs_intel_common_init(hba);
+	ufs_host = ufshcd_get_variant(hba);
+	ufs_host->late_init = ufs_intel_lkf_late_init;
+	return err;
+}
+
+static int ufs_intel_adl_init(struct ufs_hba *hba)
+{
+	hba->nop_out_timeout = 200;
+	hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;
+	hba->caps |= UFSHCD_CAP_WB_EN;
+	return ufs_intel_common_init(hba);
+}
+
+static int ufs_intel_mtl_init(struct ufs_hba *hba)
+{
+	hba->caps |= UFSHCD_CAP_CRYPTO | UFSHCD_CAP_WB_EN;
+	return ufs_intel_common_init(hba);
+}
+
+static struct ufs_hba_variant_ops ufs_intel_cnl_hba_vops = {
+	.name                   = "intel-pci",
+	.init			= ufs_intel_common_init,
+	.exit			= ufs_intel_common_exit,
+	.link_startup_notify	= ufs_intel_link_startup_notify,
+	.resume			= ufs_intel_resume,
+};
+
+static struct ufs_hba_variant_ops ufs_intel_ehl_hba_vops = {
+	.name                   = "intel-pci",
+	.init			= ufs_intel_ehl_init,
+	.exit			= ufs_intel_common_exit,
+	.link_startup_notify	= ufs_intel_link_startup_notify,
+	.resume			= ufs_intel_resume,
+};
+
+static struct ufs_hba_variant_ops ufs_intel_lkf_hba_vops = {
+	.name                   = "intel-pci",
+	.init			= ufs_intel_lkf_init,
+	.exit			= ufs_intel_common_exit,
+	.hce_enable_notify	= ufs_intel_hce_enable_notify,
+	.link_startup_notify	= ufs_intel_link_startup_notify,
+	.pwr_change_notify	= ufs_intel_lkf_pwr_change_notify,
+	.apply_dev_quirks	= ufs_intel_lkf_apply_dev_quirks,
+	.resume			= ufs_intel_resume,
+	.device_reset		= ufs_intel_device_reset,
+};
+
+static struct ufs_hba_variant_ops ufs_intel_adl_hba_vops = {
+	.name			= "intel-pci",
+	.init			= ufs_intel_adl_init,
+	.exit			= ufs_intel_common_exit,
+	.link_startup_notify	= ufs_intel_link_startup_notify,
+	.resume			= ufs_intel_resume,
+	.device_reset		= ufs_intel_device_reset,
+};
+
+static struct ufs_hba_variant_ops ufs_intel_mtl_hba_vops = {
+	.name                   = "intel-pci",
+	.init			= ufs_intel_mtl_init,
+	.exit			= ufs_intel_common_exit,
+	.hce_enable_notify	= ufs_intel_hce_enable_notify,
+	.link_startup_notify	= ufs_intel_link_startup_notify,
+	.resume			= ufs_intel_resume,
+	.device_reset		= ufs_intel_device_reset,
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int ufshcd_pci_restore(struct device *dev)
+{
+	struct ufs_hba *hba = dev_get_drvdata(dev);
+
+	/* Force a full reset and restore */
+	ufshcd_set_link_off(hba);
+
+	return ufshcd_system_resume(dev);
+}
+#endif
+
+/**
+ * ufshcd_pci_shutdown - main function to put the controller in reset state
+ * @pdev: pointer to PCI device handle
+ */
+static void ufshcd_pci_shutdown(struct pci_dev *pdev)
+{
+	ufshcd_shutdown((struct ufs_hba *)pci_get_drvdata(pdev));
+}
+
+/**
+ * ufshcd_pci_remove - de-allocate PCI/SCSI host and host memory space
+ *		data structure memory
+ * @pdev: pointer to PCI handle
+ */
+static void ufshcd_pci_remove(struct pci_dev *pdev)
+{
+	struct ufs_hba *hba = pci_get_drvdata(pdev);
+
+	pm_runtime_forbid(&pdev->dev);
+	pm_runtime_get_noresume(&pdev->dev);
+	ufshcd_remove(hba);
+	ufshcd_dealloc_host(hba);
+}
+
+/**
+ * ufshcd_pci_probe - probe routine of the driver
+ * @pdev: pointer to PCI device handle
+ * @id: PCI device id
+ *
+ * Returns 0 on success, non-zero value on failure
+ */
+static int
+ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct ufs_host *ufs_host;
+	struct ufs_hba *hba;
+	void __iomem *mmio_base;
+	int err;
+
+	err = pcim_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "pcim_enable_device failed\n");
+		return err;
+	}
+
+	pci_set_master(pdev);
+
+	err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD);
+	if (err < 0) {
+		dev_err(&pdev->dev, "request and iomap failed\n");
+		return err;
+	}
+
+	mmio_base = pcim_iomap_table(pdev)[0];
+
+	err = ufshcd_alloc_host(&pdev->dev, &hba);
+	if (err) {
+		dev_err(&pdev->dev, "Allocation failed\n");
+		return err;
+	}
+
+	hba->vops = (struct ufs_hba_variant_ops *)id->driver_data;
+
+	err = ufshcd_init(hba, mmio_base, pdev->irq);
+	if (err) {
+		dev_err(&pdev->dev, "Initialization failed\n");
+		ufshcd_dealloc_host(hba);
+		return err;
+	}
+
+	ufs_host = ufshcd_get_variant(hba);
+	if (ufs_host && ufs_host->late_init)
+		ufs_host->late_init(hba);
+
+	pm_runtime_put_noidle(&pdev->dev);
+	pm_runtime_allow(&pdev->dev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops ufshcd_pci_pm_ops = {
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
+#ifdef CONFIG_PM_SLEEP
+	.suspend	= ufshcd_system_suspend,
+	.resume		= ufshcd_system_resume,
+	.freeze		= ufshcd_system_suspend,
+	.thaw		= ufshcd_system_resume,
+	.poweroff	= ufshcd_system_suspend,
+	.restore	= ufshcd_pci_restore,
+	.prepare	= ufshcd_suspend_prepare,
+	.complete	= ufshcd_resume_complete,
+#endif
+};
+
+static const struct pci_device_id ufshcd_pci_tbl[] = {
+	{ PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ PCI_VDEVICE(INTEL, 0x9DFA), (kernel_ulong_t)&ufs_intel_cnl_hba_vops },
+	{ PCI_VDEVICE(INTEL, 0x4B41), (kernel_ulong_t)&ufs_intel_ehl_hba_vops },
+	{ PCI_VDEVICE(INTEL, 0x4B43), (kernel_ulong_t)&ufs_intel_ehl_hba_vops },
+	{ PCI_VDEVICE(INTEL, 0x98FA), (kernel_ulong_t)&ufs_intel_lkf_hba_vops },
+	{ PCI_VDEVICE(INTEL, 0x51FF), (kernel_ulong_t)&ufs_intel_adl_hba_vops },
+	{ PCI_VDEVICE(INTEL, 0x54FF), (kernel_ulong_t)&ufs_intel_adl_hba_vops },
+	{ PCI_VDEVICE(INTEL, 0x7E47), (kernel_ulong_t)&ufs_intel_mtl_hba_vops },
+	{ }	/* terminate list */
+};
+
+MODULE_DEVICE_TABLE(pci, ufshcd_pci_tbl);
+
+static struct pci_driver ufshcd_pci_driver = {
+	.name = UFSHCD,
+	.id_table = ufshcd_pci_tbl,
+	.probe = ufshcd_pci_probe,
+	.remove = ufshcd_pci_remove,
+	.shutdown = ufshcd_pci_shutdown,
+	.driver = {
+		.pm = &ufshcd_pci_pm_ops
+	},
+};
+
+module_pci_driver(ufshcd_pci_driver);
+
+MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
+MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
+MODULE_DESCRIPTION("UFS host controller PCI glue driver");
+MODULE_LICENSE("GPL");