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, 667 insertions, 0 deletions

diff --git a/drivers/crypto/cavium/cpt/cptpf_main.c b/drivers/crypto/cavium/cpt/cptpf_main.c
new file mode 100644
index 000000000..6872ac344
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptpf_main.c
@@ -0,0 +1,667 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ */
+
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/printk.h>
+
+#include "cptpf.h"
+
+#define DRV_NAME	"thunder-cpt"
+#define DRV_VERSION	"1.0"
+
+static u32 num_vfs = 4; /* Default 4 VF enabled */
+module_param(num_vfs, uint, 0444);
+MODULE_PARM_DESC(num_vfs, "Number of VFs to enable(1-16)");
+
+/*
+ * Disable cores specified by coremask
+ */
+static void cpt_disable_cores(struct cpt_device *cpt, u64 coremask,
+			      u8 type, u8 grp)
+{
+	u64 pf_exe_ctl;
+	u32 timeout = 100;
+	u64 grpmask = 0;
+	struct device *dev = &cpt->pdev->dev;
+
+	if (type == AE_TYPES)
+		coremask = (coremask << cpt->max_se_cores);
+
+	/* Disengage the cores from groups */
+	grpmask = cpt_read_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp));
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp),
+			(grpmask & ~coremask));
+	udelay(CSR_DELAY);
+	grp = cpt_read_csr64(cpt->reg_base, CPTX_PF_EXEC_BUSY(0));
+	while (grp & coremask) {
+		dev_err(dev, "Cores still busy %llx", coremask);
+		grp = cpt_read_csr64(cpt->reg_base,
+				     CPTX_PF_EXEC_BUSY(0));
+		if (timeout--)
+			break;
+
+		udelay(CSR_DELAY);
+	}
+
+	/* Disable the cores */
+	pf_exe_ctl = cpt_read_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0));
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0),
+			(pf_exe_ctl & ~coremask));
+	udelay(CSR_DELAY);
+}
+
+/*
+ * Enable cores specified by coremask
+ */
+static void cpt_enable_cores(struct cpt_device *cpt, u64 coremask,
+			     u8 type)
+{
+	u64 pf_exe_ctl;
+
+	if (type == AE_TYPES)
+		coremask = (coremask << cpt->max_se_cores);
+
+	pf_exe_ctl = cpt_read_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0));
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0),
+			(pf_exe_ctl | coremask));
+	udelay(CSR_DELAY);
+}
+
+static void cpt_configure_group(struct cpt_device *cpt, u8 grp,
+				u64 coremask, u8 type)
+{
+	u64 pf_gx_en = 0;
+
+	if (type == AE_TYPES)
+		coremask = (coremask << cpt->max_se_cores);
+
+	pf_gx_en = cpt_read_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp));
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp),
+			(pf_gx_en | coremask));
+	udelay(CSR_DELAY);
+}
+
+static void cpt_disable_mbox_interrupts(struct cpt_device *cpt)
+{
+	/* Clear mbox(0) interupts for all vfs */
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_MBOX_ENA_W1CX(0, 0), ~0ull);
+}
+
+static void cpt_disable_ecc_interrupts(struct cpt_device *cpt)
+{
+	/* Clear ecc(0) interupts for all vfs */
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_ECC0_ENA_W1C(0), ~0ull);
+}
+
+static void cpt_disable_exec_interrupts(struct cpt_device *cpt)
+{
+	/* Clear exec interupts for all vfs */
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_EXEC_ENA_W1C(0), ~0ull);
+}
+
+static void cpt_disable_all_interrupts(struct cpt_device *cpt)
+{
+	cpt_disable_mbox_interrupts(cpt);
+	cpt_disable_ecc_interrupts(cpt);
+	cpt_disable_exec_interrupts(cpt);
+}
+
+static void cpt_enable_mbox_interrupts(struct cpt_device *cpt)
+{
+	/* Set mbox(0) interupts for all vfs */
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_MBOX_ENA_W1SX(0, 0), ~0ull);
+}
+
+static int cpt_load_microcode(struct cpt_device *cpt, struct microcode *mcode)
+{
+	int ret = 0, core = 0, shift = 0;
+	u32 total_cores = 0;
+	struct device *dev = &cpt->pdev->dev;
+
+	if (!mcode || !mcode->code) {
+		dev_err(dev, "Either the mcode is null or data is NULL\n");
+		return -EINVAL;
+	}
+
+	if (mcode->code_size == 0) {
+		dev_err(dev, "microcode size is 0\n");
+		return -EINVAL;
+	}
+
+	/* Assumes 0-9 are SE cores for UCODE_BASE registers and
+	 * AE core bases follow
+	 */
+	if (mcode->is_ae) {
+		core = CPT_MAX_SE_CORES; /* start couting from 10 */
+		total_cores = CPT_MAX_TOTAL_CORES; /* upto 15 */
+	} else {
+		core = 0; /* start couting from 0 */
+		total_cores = CPT_MAX_SE_CORES; /* upto 9 */
+	}
+
+	/* Point to microcode for each core of the group */
+	for (; core < total_cores ; core++, shift++) {
+		if (mcode->core_mask & (1 << shift)) {
+			cpt_write_csr64(cpt->reg_base,
+					CPTX_PF_ENGX_UCODE_BASE(0, core),
+					(u64)mcode->phys_base);
+		}
+	}
+	return ret;
+}
+
+static int do_cpt_init(struct cpt_device *cpt, struct microcode *mcode)
+{
+	int ret = 0;
+	struct device *dev = &cpt->pdev->dev;
+
+	/* Make device not ready */
+	cpt->flags &= ~CPT_FLAG_DEVICE_READY;
+	/* Disable All PF interrupts */
+	cpt_disable_all_interrupts(cpt);
+	/* Calculate mcode group and coremasks */
+	if (mcode->is_ae) {
+		if (mcode->num_cores > cpt->max_ae_cores) {
+			dev_err(dev, "Requested for more cores than available AE cores\n");
+			ret = -EINVAL;
+			goto cpt_init_fail;
+		}
+
+		if (cpt->next_group >= CPT_MAX_CORE_GROUPS) {
+			dev_err(dev, "Can't load, all eight microcode groups in use");
+			return -ENFILE;
+		}
+
+		mcode->group = cpt->next_group;
+		/* Convert requested cores to mask */
+		mcode->core_mask = GENMASK(mcode->num_cores, 0);
+		cpt_disable_cores(cpt, mcode->core_mask, AE_TYPES,
+				  mcode->group);
+		/* Load microcode for AE engines */
+		ret = cpt_load_microcode(cpt, mcode);
+		if (ret) {
+			dev_err(dev, "Microcode load Failed for %s\n",
+				mcode->version);
+			goto cpt_init_fail;
+		}
+		cpt->next_group++;
+		/* Configure group mask for the mcode */
+		cpt_configure_group(cpt, mcode->group, mcode->core_mask,
+				    AE_TYPES);
+		/* Enable AE cores for the group mask */
+		cpt_enable_cores(cpt, mcode->core_mask, AE_TYPES);
+	} else {
+		if (mcode->num_cores > cpt->max_se_cores) {
+			dev_err(dev, "Requested for more cores than available SE cores\n");
+			ret = -EINVAL;
+			goto cpt_init_fail;
+		}
+		if (cpt->next_group >= CPT_MAX_CORE_GROUPS) {
+			dev_err(dev, "Can't load, all eight microcode groups in use");
+			return -ENFILE;
+		}
+
+		mcode->group = cpt->next_group;
+		/* Covert requested cores to mask */
+		mcode->core_mask = GENMASK(mcode->num_cores, 0);
+		cpt_disable_cores(cpt, mcode->core_mask, SE_TYPES,
+				  mcode->group);
+		/* Load microcode for SE engines */
+		ret = cpt_load_microcode(cpt, mcode);
+		if (ret) {
+			dev_err(dev, "Microcode load Failed for %s\n",
+				mcode->version);
+			goto cpt_init_fail;
+		}
+		cpt->next_group++;
+		/* Configure group mask for the mcode */
+		cpt_configure_group(cpt, mcode->group, mcode->core_mask,
+				    SE_TYPES);
+		/* Enable SE cores for the group mask */
+		cpt_enable_cores(cpt, mcode->core_mask, SE_TYPES);
+	}
+
+	/* Enabled PF mailbox interrupts */
+	cpt_enable_mbox_interrupts(cpt);
+	cpt->flags |= CPT_FLAG_DEVICE_READY;
+
+	return ret;
+
+cpt_init_fail:
+	/* Enabled PF mailbox interrupts */
+	cpt_enable_mbox_interrupts(cpt);
+
+	return ret;
+}
+
+struct ucode_header {
+	u8 version[CPT_UCODE_VERSION_SZ];
+	__be32 code_length;
+	u32 data_length;
+	u64 sram_address;
+};
+
+static int cpt_ucode_load_fw(struct cpt_device *cpt, const u8 *fw, bool is_ae)
+{
+	const struct firmware *fw_entry;
+	struct device *dev = &cpt->pdev->dev;
+	struct ucode_header *ucode;
+	unsigned int code_length;
+	struct microcode *mcode;
+	int j, ret = 0;
+
+	ret = request_firmware(&fw_entry, fw, dev);
+	if (ret)
+		return ret;
+
+	ucode = (struct ucode_header *)fw_entry->data;
+	mcode = &cpt->mcode[cpt->next_mc_idx];
+	memcpy(mcode->version, (u8 *)fw_entry->data, CPT_UCODE_VERSION_SZ);
+	code_length = ntohl(ucode->code_length);
+	if (code_length == 0 || code_length >= INT_MAX / 2) {
+		ret = -EINVAL;
+		goto fw_release;
+	}
+	mcode->code_size = code_length * 2;
+
+	mcode->is_ae = is_ae;
+	mcode->core_mask = 0ULL;
+	mcode->num_cores = is_ae ? 6 : 10;
+
+	/*  Allocate DMAable space */
+	mcode->code = dma_alloc_coherent(&cpt->pdev->dev, mcode->code_size,
+					 &mcode->phys_base, GFP_KERNEL);
+	if (!mcode->code) {
+		dev_err(dev, "Unable to allocate space for microcode");
+		ret = -ENOMEM;
+		goto fw_release;
+	}
+
+	memcpy((void *)mcode->code, (void *)(fw_entry->data + sizeof(*ucode)),
+	       mcode->code_size);
+
+	/* Byte swap 64-bit */
+	for (j = 0; j < (mcode->code_size / 8); j++)
+		((__be64 *)mcode->code)[j] = cpu_to_be64(((u64 *)mcode->code)[j]);
+	/*  MC needs 16-bit swap */
+	for (j = 0; j < (mcode->code_size / 2); j++)
+		((__be16 *)mcode->code)[j] = cpu_to_be16(((u16 *)mcode->code)[j]);
+
+	dev_dbg(dev, "mcode->code_size = %u\n", mcode->code_size);
+	dev_dbg(dev, "mcode->is_ae = %u\n", mcode->is_ae);
+	dev_dbg(dev, "mcode->num_cores = %u\n", mcode->num_cores);
+	dev_dbg(dev, "mcode->code = %llx\n", (u64)mcode->code);
+	dev_dbg(dev, "mcode->phys_base = %llx\n", mcode->phys_base);
+
+	ret = do_cpt_init(cpt, mcode);
+	if (ret) {
+		dev_err(dev, "do_cpt_init failed with ret: %d\n", ret);
+		goto fw_release;
+	}
+
+	dev_info(dev, "Microcode Loaded %s\n", mcode->version);
+	mcode->is_mc_valid = 1;
+	cpt->next_mc_idx++;
+
+fw_release:
+	release_firmware(fw_entry);
+
+	return ret;
+}
+
+static int cpt_ucode_load(struct cpt_device *cpt)
+{
+	int ret = 0;
+	struct device *dev = &cpt->pdev->dev;
+
+	ret = cpt_ucode_load_fw(cpt, "cpt8x-mc-ae.out", true);
+	if (ret) {
+		dev_err(dev, "ae:cpt_ucode_load failed with ret: %d\n", ret);
+		return ret;
+	}
+	ret = cpt_ucode_load_fw(cpt, "cpt8x-mc-se.out", false);
+	if (ret) {
+		dev_err(dev, "se:cpt_ucode_load failed with ret: %d\n", ret);
+		return ret;
+	}
+
+	return ret;
+}
+
+static irqreturn_t cpt_mbx0_intr_handler(int irq, void *cpt_irq)
+{
+	struct cpt_device *cpt = (struct cpt_device *)cpt_irq;
+
+	cpt_mbox_intr_handler(cpt, 0);
+
+	return IRQ_HANDLED;
+}
+
+static void cpt_reset(struct cpt_device *cpt)
+{
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_RESET(0), 1);
+}
+
+static void cpt_find_max_enabled_cores(struct cpt_device *cpt)
+{
+	union cptx_pf_constants pf_cnsts = {0};
+
+	pf_cnsts.u = cpt_read_csr64(cpt->reg_base, CPTX_PF_CONSTANTS(0));
+	cpt->max_se_cores = pf_cnsts.s.se;
+	cpt->max_ae_cores = pf_cnsts.s.ae;
+}
+
+static u32 cpt_check_bist_status(struct cpt_device *cpt)
+{
+	union cptx_pf_bist_status bist_sts = {0};
+
+	bist_sts.u = cpt_read_csr64(cpt->reg_base,
+				    CPTX_PF_BIST_STATUS(0));
+
+	return bist_sts.u;
+}
+
+static u64 cpt_check_exe_bist_status(struct cpt_device *cpt)
+{
+	union cptx_pf_exe_bist_status bist_sts = {0};
+
+	bist_sts.u = cpt_read_csr64(cpt->reg_base,
+				    CPTX_PF_EXE_BIST_STATUS(0));
+
+	return bist_sts.u;
+}
+
+static void cpt_disable_all_cores(struct cpt_device *cpt)
+{
+	u32 grp, timeout = 100;
+	struct device *dev = &cpt->pdev->dev;
+
+	/* Disengage the cores from groups */
+	for (grp = 0; grp < CPT_MAX_CORE_GROUPS; grp++) {
+		cpt_write_csr64(cpt->reg_base, CPTX_PF_GX_EN(0, grp), 0);
+		udelay(CSR_DELAY);
+	}
+
+	grp = cpt_read_csr64(cpt->reg_base, CPTX_PF_EXEC_BUSY(0));
+	while (grp) {
+		dev_err(dev, "Cores still busy");
+		grp = cpt_read_csr64(cpt->reg_base,
+				     CPTX_PF_EXEC_BUSY(0));
+		if (timeout--)
+			break;
+
+		udelay(CSR_DELAY);
+	}
+	/* Disable the cores */
+	cpt_write_csr64(cpt->reg_base, CPTX_PF_EXE_CTL(0), 0);
+}
+
+/*
+ * Ensure all cores are disengaged from all groups by
+ * calling cpt_disable_all_cores() before calling this
+ * function.
+ */
+static void cpt_unload_microcode(struct cpt_device *cpt)
+{
+	u32 grp = 0, core;
+
+	/* Free microcode bases and reset group masks */
+	for (grp = 0; grp < CPT_MAX_CORE_GROUPS; grp++) {
+		struct microcode *mcode = &cpt->mcode[grp];
+
+		if (cpt->mcode[grp].code)
+			dma_free_coherent(&cpt->pdev->dev, mcode->code_size,
+					  mcode->code, mcode->phys_base);
+		mcode->code = NULL;
+	}
+	/* Clear UCODE_BASE registers for all engines */
+	for (core = 0; core < CPT_MAX_TOTAL_CORES; core++)
+		cpt_write_csr64(cpt->reg_base,
+				CPTX_PF_ENGX_UCODE_BASE(0, core), 0ull);
+}
+
+static int cpt_device_init(struct cpt_device *cpt)
+{
+	u64 bist;
+	struct device *dev = &cpt->pdev->dev;
+
+	/* Reset the PF when probed first */
+	cpt_reset(cpt);
+	msleep(100);
+
+	/*Check BIST status*/
+	bist = (u64)cpt_check_bist_status(cpt);
+	if (bist) {
+		dev_err(dev, "RAM BIST failed with code 0x%llx", bist);
+		return -ENODEV;
+	}
+
+	bist = cpt_check_exe_bist_status(cpt);
+	if (bist) {
+		dev_err(dev, "Engine BIST failed with code 0x%llx", bist);
+		return -ENODEV;
+	}
+
+	/*Get CLK frequency*/
+	/*Get max enabled cores */
+	cpt_find_max_enabled_cores(cpt);
+	/*Disable all cores*/
+	cpt_disable_all_cores(cpt);
+	/*Reset device parameters*/
+	cpt->next_mc_idx   = 0;
+	cpt->next_group = 0;
+	/* PF is ready */
+	cpt->flags |= CPT_FLAG_DEVICE_READY;
+
+	return 0;
+}
+
+static int cpt_register_interrupts(struct cpt_device *cpt)
+{
+	int ret;
+	struct device *dev = &cpt->pdev->dev;
+
+	/* Enable MSI-X */
+	ret = pci_alloc_irq_vectors(cpt->pdev, CPT_PF_MSIX_VECTORS,
+			CPT_PF_MSIX_VECTORS, PCI_IRQ_MSIX);
+	if (ret < 0) {
+		dev_err(&cpt->pdev->dev, "Request for #%d msix vectors failed\n",
+			CPT_PF_MSIX_VECTORS);
+		return ret;
+	}
+
+	/* Register mailbox interrupt handlers */
+	ret = request_irq(pci_irq_vector(cpt->pdev, CPT_PF_INT_VEC_E_MBOXX(0)),
+			  cpt_mbx0_intr_handler, 0, "CPT Mbox0", cpt);
+	if (ret)
+		goto fail;
+
+	/* Enable mailbox interrupt */
+	cpt_enable_mbox_interrupts(cpt);
+	return 0;
+
+fail:
+	dev_err(dev, "Request irq failed\n");
+	pci_disable_msix(cpt->pdev);
+	return ret;
+}
+
+static void cpt_unregister_interrupts(struct cpt_device *cpt)
+{
+	free_irq(pci_irq_vector(cpt->pdev, CPT_PF_INT_VEC_E_MBOXX(0)), cpt);
+	pci_disable_msix(cpt->pdev);
+}
+
+static int cpt_sriov_init(struct cpt_device *cpt, int num_vfs)
+{
+	int pos = 0;
+	int err;
+	u16 total_vf_cnt;
+	struct pci_dev *pdev = cpt->pdev;
+
+	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
+	if (!pos) {
+		dev_err(&pdev->dev, "SRIOV capability is not found in PCIe config space\n");
+		return -ENODEV;
+	}
+
+	cpt->num_vf_en = num_vfs; /* User requested VFs */
+	pci_read_config_word(pdev, (pos + PCI_SRIOV_TOTAL_VF), &total_vf_cnt);
+	if (total_vf_cnt < cpt->num_vf_en)
+		cpt->num_vf_en = total_vf_cnt;
+
+	if (!total_vf_cnt)
+		return 0;
+
+	/*Enabled the available VFs */
+	err = pci_enable_sriov(pdev, cpt->num_vf_en);
+	if (err) {
+		dev_err(&pdev->dev, "SRIOV enable failed, num VF is %d\n",
+			cpt->num_vf_en);
+		cpt->num_vf_en = 0;
+		return err;
+	}
+
+	/* TODO: Optionally enable static VQ priorities feature */
+
+	dev_info(&pdev->dev, "SRIOV enabled, number of VF available %d\n",
+		 cpt->num_vf_en);
+
+	cpt->flags |= CPT_FLAG_SRIOV_ENABLED;
+
+	return 0;
+}
+
+static int cpt_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct device *dev = &pdev->dev;
+	struct cpt_device *cpt;
+	int err;
+
+	if (num_vfs > 16 || num_vfs < 4) {
+		dev_warn(dev, "Invalid vf count %d, Resetting it to 4(default)\n",
+			 num_vfs);
+		num_vfs = 4;
+	}
+
+	cpt = devm_kzalloc(dev, sizeof(*cpt), GFP_KERNEL);
+	if (!cpt)
+		return -ENOMEM;
+
+	pci_set_drvdata(pdev, cpt);
+	cpt->pdev = pdev;
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(dev, "Failed to enable PCI device\n");
+		pci_set_drvdata(pdev, NULL);
+		return err;
+	}
+
+	err = pci_request_regions(pdev, DRV_NAME);
+	if (err) {
+		dev_err(dev, "PCI request regions failed 0x%x\n", err);
+		goto cpt_err_disable_device;
+	}
+
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));
+	if (err) {
+		dev_err(dev, "Unable to get usable 48-bit DMA configuration\n");
+		goto cpt_err_release_regions;
+	}
+
+	/* MAP PF's configuration registers */
+	cpt->reg_base = pcim_iomap(pdev, 0, 0);
+	if (!cpt->reg_base) {
+		dev_err(dev, "Cannot map config register space, aborting\n");
+		err = -ENOMEM;
+		goto cpt_err_release_regions;
+	}
+
+	/* CPT device HW initialization */
+	cpt_device_init(cpt);
+
+	/* Register interrupts */
+	err = cpt_register_interrupts(cpt);
+	if (err)
+		goto cpt_err_release_regions;
+
+	err = cpt_ucode_load(cpt);
+	if (err)
+		goto cpt_err_unregister_interrupts;
+
+	/* Configure SRIOV */
+	err = cpt_sriov_init(cpt, num_vfs);
+	if (err)
+		goto cpt_err_unregister_interrupts;
+
+	return 0;
+
+cpt_err_unregister_interrupts:
+	cpt_unregister_interrupts(cpt);
+cpt_err_release_regions:
+	pci_release_regions(pdev);
+cpt_err_disable_device:
+	pci_disable_device(pdev);
+	pci_set_drvdata(pdev, NULL);
+	return err;
+}
+
+static void cpt_remove(struct pci_dev *pdev)
+{
+	struct cpt_device *cpt = pci_get_drvdata(pdev);
+
+	/* Disengage SE and AE cores from all groups*/
+	cpt_disable_all_cores(cpt);
+	/* Unload microcodes */
+	cpt_unload_microcode(cpt);
+	cpt_unregister_interrupts(cpt);
+	pci_disable_sriov(pdev);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	pci_set_drvdata(pdev, NULL);
+}
+
+static void cpt_shutdown(struct pci_dev *pdev)
+{
+	struct cpt_device *cpt = pci_get_drvdata(pdev);
+
+	if (!cpt)
+		return;
+
+	dev_info(&pdev->dev, "Shutdown device %x:%x.\n",
+		 (u32)pdev->vendor, (u32)pdev->device);
+
+	cpt_unregister_interrupts(cpt);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	pci_set_drvdata(pdev, NULL);
+}
+
+/* Supported devices */
+static const struct pci_device_id cpt_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, CPT_81XX_PCI_PF_DEVICE_ID) },
+	{ 0, }  /* end of table */
+};
+
+static struct pci_driver cpt_pci_driver = {
+	.name = DRV_NAME,
+	.id_table = cpt_id_table,
+	.probe = cpt_probe,
+	.remove = cpt_remove,
+	.shutdown = cpt_shutdown,
+};
+
+module_pci_driver(cpt_pci_driver);
+
+MODULE_AUTHOR("George Cherian <george.cherian@cavium.com>");
+MODULE_DESCRIPTION("Cavium Thunder CPT Physical Function Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DEVICE_TABLE(pci, cpt_id_table);