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, 753 insertions, 0 deletions

diff --git a/drivers/misc/habanalabs/common/habanalabs_drv.c b/drivers/misc/habanalabs/common/habanalabs_drv.c
new file mode 100644
index 000000000..7815c60df
--- /dev/null
+++ b/drivers/misc/habanalabs/common/habanalabs_drv.c
@@ -0,0 +1,753 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2016-2021 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ *
+ */
+
+#define pr_fmt(fmt)		"habanalabs: " fmt
+
+#include "habanalabs.h"
+#include "../include/hw_ip/pci/pci_general.h"
+
+#include <linux/pci.h>
+#include <linux/aer.h>
+#include <linux/module.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/habanalabs.h>
+
+#define HL_DRIVER_AUTHOR	"HabanaLabs Kernel Driver Team"
+
+#define HL_DRIVER_DESC		"Driver for HabanaLabs's AI Accelerators"
+
+MODULE_AUTHOR(HL_DRIVER_AUTHOR);
+MODULE_DESCRIPTION(HL_DRIVER_DESC);
+MODULE_LICENSE("GPL v2");
+
+static int hl_major;
+static struct class *hl_class;
+static DEFINE_IDR(hl_devs_idr);
+static DEFINE_MUTEX(hl_devs_idr_lock);
+
+#define HL_DEFAULT_TIMEOUT_LOCKED	30	/* 30 seconds */
+#define GAUDI_DEFAULT_TIMEOUT_LOCKED	600	/* 10 minutes */
+
+static int timeout_locked = HL_DEFAULT_TIMEOUT_LOCKED;
+static int reset_on_lockup = 1;
+static int memory_scrub;
+static ulong boot_error_status_mask = ULONG_MAX;
+
+module_param(timeout_locked, int, 0444);
+MODULE_PARM_DESC(timeout_locked,
+	"Device lockup timeout in seconds (0 = disabled, default 30s)");
+
+module_param(reset_on_lockup, int, 0444);
+MODULE_PARM_DESC(reset_on_lockup,
+	"Do device reset on lockup (0 = no, 1 = yes, default yes)");
+
+module_param(memory_scrub, int, 0444);
+MODULE_PARM_DESC(memory_scrub,
+	"Scrub device memory in various states (0 = no, 1 = yes, default no)");
+
+module_param(boot_error_status_mask, ulong, 0444);
+MODULE_PARM_DESC(boot_error_status_mask,
+	"Mask of the error status during device CPU boot (If bitX is cleared then error X is masked. Default all 1's)");
+
+#define PCI_VENDOR_ID_HABANALABS	0x1da3
+
+#define PCI_IDS_GOYA			0x0001
+#define PCI_IDS_GAUDI			0x1000
+#define PCI_IDS_GAUDI_SEC		0x1010
+
+#define PCI_IDS_GAUDI2			0x1020
+
+static const struct pci_device_id ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_HABANALABS, PCI_IDS_GOYA), },
+	{ PCI_DEVICE(PCI_VENDOR_ID_HABANALABS, PCI_IDS_GAUDI), },
+	{ PCI_DEVICE(PCI_VENDOR_ID_HABANALABS, PCI_IDS_GAUDI_SEC), },
+	{ PCI_DEVICE(PCI_VENDOR_ID_HABANALABS, PCI_IDS_GAUDI2), },
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(pci, ids);
+
+/*
+ * get_asic_type - translate device id to asic type
+ *
+ * @hdev: pointer to habanalabs device structure.
+ *
+ * Translate device id and revision id to asic type.
+ * In case of unidentified device, return -1
+ */
+static enum hl_asic_type get_asic_type(struct hl_device *hdev)
+{
+	struct pci_dev *pdev = hdev->pdev;
+	enum hl_asic_type asic_type = ASIC_INVALID;
+
+	switch (pdev->device) {
+	case PCI_IDS_GOYA:
+		asic_type = ASIC_GOYA;
+		break;
+	case PCI_IDS_GAUDI:
+		asic_type = ASIC_GAUDI;
+		break;
+	case PCI_IDS_GAUDI_SEC:
+		asic_type = ASIC_GAUDI_SEC;
+		break;
+	case PCI_IDS_GAUDI2:
+		switch (pdev->revision) {
+		case REV_ID_A:
+			asic_type = ASIC_GAUDI2;
+			break;
+		case REV_ID_B:
+			asic_type = ASIC_GAUDI2B;
+			break;
+		default:
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+
+	return asic_type;
+}
+
+static bool is_asic_secured(enum hl_asic_type asic_type)
+{
+	switch (asic_type) {
+	case ASIC_GAUDI_SEC:
+		return true;
+	default:
+		return false;
+	}
+}
+
+/*
+ * hl_device_open - open function for habanalabs device
+ *
+ * @inode: pointer to inode structure
+ * @filp: pointer to file structure
+ *
+ * Called when process opens an habanalabs device.
+ */
+int hl_device_open(struct inode *inode, struct file *filp)
+{
+	enum hl_device_status status;
+	struct hl_device *hdev;
+	struct hl_fpriv *hpriv;
+	int rc;
+
+	mutex_lock(&hl_devs_idr_lock);
+	hdev = idr_find(&hl_devs_idr, iminor(inode));
+	mutex_unlock(&hl_devs_idr_lock);
+
+	if (!hdev) {
+		pr_err("Couldn't find device %d:%d\n",
+			imajor(inode), iminor(inode));
+		return -ENXIO;
+	}
+
+	hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL);
+	if (!hpriv)
+		return -ENOMEM;
+
+	hpriv->hdev = hdev;
+	filp->private_data = hpriv;
+	hpriv->filp = filp;
+
+	mutex_init(&hpriv->notifier_event.lock);
+	mutex_init(&hpriv->restore_phase_mutex);
+	mutex_init(&hpriv->ctx_lock);
+	kref_init(&hpriv->refcount);
+	nonseekable_open(inode, filp);
+
+	hl_ctx_mgr_init(&hpriv->ctx_mgr);
+	hl_mem_mgr_init(hpriv->hdev->dev, &hpriv->mem_mgr);
+
+	hpriv->taskpid = get_task_pid(current, PIDTYPE_PID);
+
+	mutex_lock(&hdev->fpriv_list_lock);
+
+	if (!hl_device_operational(hdev, &status)) {
+		dev_dbg_ratelimited(hdev->dev,
+			"Can't open %s because it is %s\n",
+			dev_name(hdev->dev), hdev->status[status]);
+
+		if (status == HL_DEVICE_STATUS_IN_RESET ||
+					status == HL_DEVICE_STATUS_IN_RESET_AFTER_DEVICE_RELEASE)
+			rc = -EAGAIN;
+		else
+			rc = -EPERM;
+
+		goto out_err;
+	}
+
+	if (hdev->is_in_dram_scrub) {
+		dev_dbg_ratelimited(hdev->dev,
+			"Can't open %s during dram scrub\n",
+			dev_name(hdev->dev));
+		rc = -EAGAIN;
+		goto out_err;
+	}
+
+	if (hdev->compute_ctx_in_release) {
+		dev_dbg_ratelimited(hdev->dev,
+			"Can't open %s because another user is still releasing it\n",
+			dev_name(hdev->dev));
+		rc = -EAGAIN;
+		goto out_err;
+	}
+
+	if (hdev->is_compute_ctx_active) {
+		dev_dbg_ratelimited(hdev->dev,
+			"Can't open %s because another user is working on it\n",
+			dev_name(hdev->dev));
+		rc = -EBUSY;
+		goto out_err;
+	}
+
+	rc = hl_ctx_create(hdev, hpriv);
+	if (rc) {
+		dev_err(hdev->dev, "Failed to create context %d\n", rc);
+		goto out_err;
+	}
+
+	list_add(&hpriv->dev_node, &hdev->fpriv_list);
+	mutex_unlock(&hdev->fpriv_list_lock);
+
+	hdev->asic_funcs->send_device_activity(hdev, true);
+
+	hl_debugfs_add_file(hpriv);
+
+	atomic_set(&hdev->captured_err_info.cs_timeout.write_enable, 1);
+	atomic_set(&hdev->captured_err_info.razwi_info_recorded, 0);
+	atomic_set(&hdev->captured_err_info.pgf_info_recorded, 0);
+	hdev->captured_err_info.undef_opcode.write_enable = true;
+
+	hdev->open_counter++;
+	hdev->last_successful_open_jif = jiffies;
+	hdev->last_successful_open_ktime = ktime_get();
+
+	return 0;
+
+out_err:
+	mutex_unlock(&hdev->fpriv_list_lock);
+	hl_mem_mgr_fini(&hpriv->mem_mgr);
+	hl_ctx_mgr_fini(hpriv->hdev, &hpriv->ctx_mgr);
+	filp->private_data = NULL;
+	mutex_destroy(&hpriv->ctx_lock);
+	mutex_destroy(&hpriv->restore_phase_mutex);
+	mutex_destroy(&hpriv->notifier_event.lock);
+	put_pid(hpriv->taskpid);
+
+	kfree(hpriv);
+
+	return rc;
+}
+
+int hl_device_open_ctrl(struct inode *inode, struct file *filp)
+{
+	struct hl_device *hdev;
+	struct hl_fpriv *hpriv;
+	int rc;
+
+	mutex_lock(&hl_devs_idr_lock);
+	hdev = idr_find(&hl_devs_idr, iminor(inode));
+	mutex_unlock(&hl_devs_idr_lock);
+
+	if (!hdev) {
+		pr_err("Couldn't find device %d:%d\n",
+			imajor(inode), iminor(inode));
+		return -ENXIO;
+	}
+
+	hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL);
+	if (!hpriv)
+		return -ENOMEM;
+
+	/* Prevent other routines from reading partial hpriv data by
+	 * initializing hpriv fields before inserting it to the list
+	 */
+	hpriv->hdev = hdev;
+	filp->private_data = hpriv;
+	hpriv->filp = filp;
+
+	mutex_init(&hpriv->notifier_event.lock);
+	nonseekable_open(inode, filp);
+
+	hpriv->taskpid = get_task_pid(current, PIDTYPE_PID);
+
+	mutex_lock(&hdev->fpriv_ctrl_list_lock);
+
+	if (!hl_ctrl_device_operational(hdev, NULL)) {
+		dev_dbg_ratelimited(hdev->dev_ctrl,
+			"Can't open %s because it is disabled\n",
+			dev_name(hdev->dev_ctrl));
+		rc = -EPERM;
+		goto out_err;
+	}
+
+	list_add(&hpriv->dev_node, &hdev->fpriv_ctrl_list);
+	mutex_unlock(&hdev->fpriv_ctrl_list_lock);
+
+	return 0;
+
+out_err:
+	mutex_unlock(&hdev->fpriv_ctrl_list_lock);
+	filp->private_data = NULL;
+	put_pid(hpriv->taskpid);
+
+	kfree(hpriv);
+
+	return rc;
+}
+
+static void set_driver_behavior_per_device(struct hl_device *hdev)
+{
+	hdev->nic_ports_mask = 0;
+	hdev->fw_components = FW_TYPE_ALL_TYPES;
+	hdev->mmu_enable = MMU_EN_ALL;
+	hdev->cpu_queues_enable = 1;
+	hdev->pldm = 0;
+	hdev->hard_reset_on_fw_events = 1;
+	hdev->bmc_enable = 1;
+	hdev->reset_on_preboot_fail = 1;
+	hdev->heartbeat = 1;
+}
+
+static void copy_kernel_module_params_to_device(struct hl_device *hdev)
+{
+	hdev->asic_prop.fw_security_enabled = is_asic_secured(hdev->asic_type);
+
+	hdev->major = hl_major;
+	hdev->memory_scrub = memory_scrub;
+	hdev->reset_on_lockup = reset_on_lockup;
+	hdev->boot_error_status_mask = boot_error_status_mask;
+}
+
+static void fixup_device_params_per_asic(struct hl_device *hdev, int timeout)
+{
+	switch (hdev->asic_type) {
+	case ASIC_GAUDI:
+	case ASIC_GAUDI_SEC:
+		/* If user didn't request a different timeout than the default one, we have
+		 * a different default timeout for Gaudi
+		 */
+		if (timeout == HL_DEFAULT_TIMEOUT_LOCKED)
+			hdev->timeout_jiffies = msecs_to_jiffies(GAUDI_DEFAULT_TIMEOUT_LOCKED *
+										MSEC_PER_SEC);
+
+		hdev->reset_upon_device_release = 0;
+		break;
+
+	case ASIC_GOYA:
+		hdev->reset_upon_device_release = 0;
+		break;
+
+	default:
+		hdev->reset_upon_device_release = 1;
+		break;
+	}
+}
+
+static int fixup_device_params(struct hl_device *hdev)
+{
+	int tmp_timeout;
+
+	tmp_timeout = timeout_locked;
+
+	hdev->fw_poll_interval_usec = HL_FW_STATUS_POLL_INTERVAL_USEC;
+	hdev->fw_comms_poll_interval_usec = HL_FW_STATUS_POLL_INTERVAL_USEC;
+
+	if (tmp_timeout)
+		hdev->timeout_jiffies = msecs_to_jiffies(tmp_timeout * MSEC_PER_SEC);
+	else
+		hdev->timeout_jiffies = MAX_SCHEDULE_TIMEOUT;
+
+	hdev->stop_on_err = true;
+	hdev->reset_info.curr_reset_cause = HL_RESET_CAUSE_UNKNOWN;
+	hdev->reset_info.prev_reset_trigger = HL_RESET_TRIGGER_DEFAULT;
+
+	/* Enable only after the initialization of the device */
+	hdev->disabled = true;
+
+	if (!(hdev->fw_components & FW_TYPE_PREBOOT_CPU) &&
+			(hdev->fw_components & ~FW_TYPE_PREBOOT_CPU)) {
+		pr_err("Preboot must be set along with other components");
+		return -EINVAL;
+	}
+
+	/* If CPU queues not enabled, no way to do heartbeat */
+	if (!hdev->cpu_queues_enable)
+		hdev->heartbeat = 0;
+
+	fixup_device_params_per_asic(hdev, tmp_timeout);
+
+	return 0;
+}
+
+/**
+ * create_hdev - create habanalabs device instance
+ *
+ * @dev: will hold the pointer to the new habanalabs device structure
+ * @pdev: pointer to the pci device
+ *
+ * Allocate memory for habanalabs device and initialize basic fields
+ * Identify the ASIC type
+ * Allocate ID (minor) for the device (only for real devices)
+ */
+static int create_hdev(struct hl_device **dev, struct pci_dev *pdev)
+{
+	int main_id, ctrl_id = 0, rc = 0;
+	struct hl_device *hdev;
+
+	*dev = NULL;
+
+	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
+	if (!hdev)
+		return -ENOMEM;
+
+	/* Will be NULL in case of simulator device */
+	hdev->pdev = pdev;
+
+	/* Assign status description string */
+	strncpy(hdev->status[HL_DEVICE_STATUS_OPERATIONAL], "operational", HL_STR_MAX);
+	strncpy(hdev->status[HL_DEVICE_STATUS_IN_RESET], "in reset", HL_STR_MAX);
+	strncpy(hdev->status[HL_DEVICE_STATUS_MALFUNCTION], "disabled", HL_STR_MAX);
+	strncpy(hdev->status[HL_DEVICE_STATUS_NEEDS_RESET], "needs reset", HL_STR_MAX);
+	strncpy(hdev->status[HL_DEVICE_STATUS_IN_DEVICE_CREATION],
+					"in device creation", HL_STR_MAX);
+	strncpy(hdev->status[HL_DEVICE_STATUS_IN_RESET_AFTER_DEVICE_RELEASE],
+					"in reset after device release", HL_STR_MAX);
+
+
+	/* First, we must find out which ASIC are we handling. This is needed
+	 * to configure the behavior of the driver (kernel parameters)
+	 */
+	hdev->asic_type = get_asic_type(hdev);
+	if (hdev->asic_type == ASIC_INVALID) {
+		dev_err(&pdev->dev, "Unsupported ASIC\n");
+		rc = -ENODEV;
+		goto free_hdev;
+	}
+
+	copy_kernel_module_params_to_device(hdev);
+
+	set_driver_behavior_per_device(hdev);
+
+	fixup_device_params(hdev);
+
+	mutex_lock(&hl_devs_idr_lock);
+
+	/* Always save 2 numbers, 1 for main device and 1 for control.
+	 * They must be consecutive
+	 */
+	main_id = idr_alloc(&hl_devs_idr, hdev, 0, HL_MAX_MINORS, GFP_KERNEL);
+
+	if (main_id >= 0)
+		ctrl_id = idr_alloc(&hl_devs_idr, hdev, main_id + 1,
+					main_id + 2, GFP_KERNEL);
+
+	mutex_unlock(&hl_devs_idr_lock);
+
+	if ((main_id < 0) || (ctrl_id < 0)) {
+		if ((main_id == -ENOSPC) || (ctrl_id == -ENOSPC))
+			pr_err("too many devices in the system\n");
+
+		if (main_id >= 0) {
+			mutex_lock(&hl_devs_idr_lock);
+			idr_remove(&hl_devs_idr, main_id);
+			mutex_unlock(&hl_devs_idr_lock);
+		}
+
+		rc = -EBUSY;
+		goto free_hdev;
+	}
+
+	hdev->id = main_id;
+	hdev->id_control = ctrl_id;
+
+	*dev = hdev;
+
+	return 0;
+
+free_hdev:
+	kfree(hdev);
+	return rc;
+}
+
+/*
+ * destroy_hdev - destroy habanalabs device instance
+ *
+ * @dev: pointer to the habanalabs device structure
+ *
+ */
+static void destroy_hdev(struct hl_device *hdev)
+{
+	/* Remove device from the device list */
+	mutex_lock(&hl_devs_idr_lock);
+	idr_remove(&hl_devs_idr, hdev->id);
+	idr_remove(&hl_devs_idr, hdev->id_control);
+	mutex_unlock(&hl_devs_idr_lock);
+
+	kfree(hdev);
+}
+
+static int hl_pmops_suspend(struct device *dev)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+
+	pr_debug("Going to suspend PCI device\n");
+
+	if (!hdev) {
+		pr_err("device pointer is NULL in suspend\n");
+		return 0;
+	}
+
+	return hl_device_suspend(hdev);
+}
+
+static int hl_pmops_resume(struct device *dev)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+
+	pr_debug("Going to resume PCI device\n");
+
+	if (!hdev) {
+		pr_err("device pointer is NULL in resume\n");
+		return 0;
+	}
+
+	return hl_device_resume(hdev);
+}
+
+/**
+ * hl_pci_probe - probe PCI habanalabs devices
+ *
+ * @pdev: pointer to pci device
+ * @id: pointer to pci device id structure
+ *
+ * Standard PCI probe function for habanalabs device.
+ * Create a new habanalabs device and initialize it according to the
+ * device's type
+ */
+static int hl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct hl_device *hdev;
+	int rc;
+
+	dev_info(&pdev->dev, HL_NAME
+		 " device found [%04x:%04x] (rev %x)\n",
+		 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
+
+	rc = create_hdev(&hdev, pdev);
+	if (rc)
+		return rc;
+
+	pci_set_drvdata(pdev, hdev);
+
+	pci_enable_pcie_error_reporting(pdev);
+
+	rc = hl_device_init(hdev, hl_class);
+	if (rc) {
+		dev_err(&pdev->dev, "Fatal error during habanalabs device init\n");
+		rc = -ENODEV;
+		goto disable_device;
+	}
+
+	return 0;
+
+disable_device:
+	pci_disable_pcie_error_reporting(pdev);
+	pci_set_drvdata(pdev, NULL);
+	destroy_hdev(hdev);
+
+	return rc;
+}
+
+/*
+ * hl_pci_remove - remove PCI habanalabs devices
+ *
+ * @pdev: pointer to pci device
+ *
+ * Standard PCI remove function for habanalabs device
+ */
+static void hl_pci_remove(struct pci_dev *pdev)
+{
+	struct hl_device *hdev;
+
+	hdev = pci_get_drvdata(pdev);
+	if (!hdev)
+		return;
+
+	hl_device_fini(hdev);
+	pci_disable_pcie_error_reporting(pdev);
+	pci_set_drvdata(pdev, NULL);
+	destroy_hdev(hdev);
+}
+
+/**
+ * hl_pci_err_detected - a PCI bus error detected on this device
+ *
+ * @pdev: pointer to pci device
+ * @state: PCI error type
+ *
+ * Called by the PCI subsystem whenever a non-correctable
+ * PCI bus error is detected
+ */
+static pci_ers_result_t
+hl_pci_err_detected(struct pci_dev *pdev, pci_channel_state_t state)
+{
+	struct hl_device *hdev = pci_get_drvdata(pdev);
+	enum pci_ers_result result;
+
+	switch (state) {
+	case pci_channel_io_normal:
+		dev_warn(hdev->dev, "PCI normal state error detected\n");
+		return PCI_ERS_RESULT_CAN_RECOVER;
+
+	case pci_channel_io_frozen:
+		dev_warn(hdev->dev, "PCI frozen state error detected\n");
+		result = PCI_ERS_RESULT_NEED_RESET;
+		break;
+
+	case pci_channel_io_perm_failure:
+		dev_warn(hdev->dev, "PCI failure state error detected\n");
+		result = PCI_ERS_RESULT_DISCONNECT;
+		break;
+
+	default:
+		result = PCI_ERS_RESULT_NONE;
+	}
+
+	hdev->asic_funcs->halt_engines(hdev, true, false);
+
+	return result;
+}
+
+/**
+ * hl_pci_err_resume - resume after a PCI slot reset
+ *
+ * @pdev: pointer to pci device
+ *
+ */
+static void hl_pci_err_resume(struct pci_dev *pdev)
+{
+	struct hl_device *hdev = pci_get_drvdata(pdev);
+
+	dev_warn(hdev->dev, "Resuming device after PCI slot reset\n");
+	hl_device_resume(hdev);
+}
+
+/**
+ * hl_pci_err_slot_reset - a PCI slot reset has just happened
+ *
+ * @pdev: pointer to pci device
+ *
+ * Determine if the driver can recover from the PCI slot reset
+ */
+static pci_ers_result_t hl_pci_err_slot_reset(struct pci_dev *pdev)
+{
+	struct hl_device *hdev = pci_get_drvdata(pdev);
+
+	dev_warn(hdev->dev, "PCI slot reset detected\n");
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+static const struct dev_pm_ops hl_pm_ops = {
+	.suspend = hl_pmops_suspend,
+	.resume = hl_pmops_resume,
+};
+
+static const struct pci_error_handlers hl_pci_err_handler = {
+	.error_detected = hl_pci_err_detected,
+	.slot_reset = hl_pci_err_slot_reset,
+	.resume = hl_pci_err_resume,
+};
+
+static struct pci_driver hl_pci_driver = {
+	.name = HL_NAME,
+	.id_table = ids,
+	.probe = hl_pci_probe,
+	.remove = hl_pci_remove,
+	.shutdown = hl_pci_remove,
+	.driver = {
+		.name = HL_NAME,
+		.pm = &hl_pm_ops,
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+	},
+	.err_handler = &hl_pci_err_handler,
+};
+
+/*
+ * hl_init - Initialize the habanalabs kernel driver
+ */
+static int __init hl_init(void)
+{
+	int rc;
+	dev_t dev;
+
+	pr_info("loading driver\n");
+
+	rc = alloc_chrdev_region(&dev, 0, HL_MAX_MINORS, HL_NAME);
+	if (rc < 0) {
+		pr_err("unable to get major\n");
+		return rc;
+	}
+
+	hl_major = MAJOR(dev);
+
+	hl_class = class_create(THIS_MODULE, HL_NAME);
+	if (IS_ERR(hl_class)) {
+		pr_err("failed to allocate class\n");
+		rc = PTR_ERR(hl_class);
+		goto remove_major;
+	}
+
+	hl_debugfs_init();
+
+	rc = pci_register_driver(&hl_pci_driver);
+	if (rc) {
+		pr_err("failed to register pci device\n");
+		goto remove_debugfs;
+	}
+
+	pr_debug("driver loaded\n");
+
+	return 0;
+
+remove_debugfs:
+	hl_debugfs_fini();
+	class_destroy(hl_class);
+remove_major:
+	unregister_chrdev_region(MKDEV(hl_major, 0), HL_MAX_MINORS);
+	return rc;
+}
+
+/*
+ * hl_exit - Release all resources of the habanalabs kernel driver
+ */
+static void __exit hl_exit(void)
+{
+	pci_unregister_driver(&hl_pci_driver);
+
+	/*
+	 * Removing debugfs must be after all devices or simulator devices
+	 * have been removed because otherwise we get a bug in the
+	 * debugfs module for referencing NULL objects
+	 */
+	hl_debugfs_fini();
+
+	class_destroy(hl_class);
+	unregister_chrdev_region(MKDEV(hl_major, 0), HL_MAX_MINORS);
+
+	idr_destroy(&hl_devs_idr);
+
+	pr_debug("driver removed\n");
+}
+
+module_init(hl_init);
+module_exit(hl_exit);