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, 561 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/ef100.c b/drivers/net/ethernet/sfc/ef100.c
new file mode 100644
index 000000000..71aab3d04
--- /dev/null
+++ b/drivers/net/ethernet/sfc/ef100.c
@@ -0,0 +1,561 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2005-2018 Solarflare Communications Inc.
+ * Copyright 2019-2022 Xilinx Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+
+#include "net_driver.h"
+#include <linux/module.h>
+#include <linux/aer.h>
+#include "efx_common.h"
+#include "efx_channels.h"
+#include "io.h"
+#include "ef100_nic.h"
+#include "ef100_netdev.h"
+#include "ef100_sriov.h"
+#include "ef100_regs.h"
+#include "ef100.h"
+
+#define EFX_EF100_PCI_DEFAULT_BAR	2
+
+/* Number of bytes at start of vendor specified extended capability that indicate
+ * that the capability is vendor specified. i.e. offset from value returned by
+ * pci_find_next_ext_capability() to beginning of vendor specified capability
+ * header.
+ */
+#define PCI_EXT_CAP_HDR_LENGTH  4
+
+/* Expected size of a Xilinx continuation address table entry. */
+#define ESE_GZ_CFGBAR_CONT_CAP_MIN_LENGTH      16
+
+struct ef100_func_ctl_window {
+	bool valid;
+	unsigned int bar;
+	u64 offset;
+};
+
+static int ef100_pci_walk_xilinx_table(struct efx_nic *efx, u64 offset,
+				       struct ef100_func_ctl_window *result);
+
+/* Number of bytes to offset when reading bit position x with dword accessors. */
+#define ROUND_DOWN_TO_DWORD(x) (((x) & (~31)) >> 3)
+
+#define EXTRACT_BITS(x, lbn, width) \
+	(((x) >> ((lbn) & 31)) & ((1ull << (width)) - 1))
+
+static u32 _ef100_pci_get_bar_bits_with_width(struct efx_nic *efx,
+					      int structure_start,
+					      int lbn, int width)
+{
+	efx_dword_t dword;
+
+	efx_readd(efx, &dword, structure_start + ROUND_DOWN_TO_DWORD(lbn));
+
+	return EXTRACT_BITS(le32_to_cpu(dword.u32[0]), lbn, width);
+}
+
+#define ef100_pci_get_bar_bits(efx, entry_location, bitdef)	\
+	_ef100_pci_get_bar_bits_with_width(efx, entry_location,	\
+		ESF_GZ_CFGBAR_ ## bitdef ## _LBN,		\
+		ESF_GZ_CFGBAR_ ## bitdef ## _WIDTH)
+
+static int ef100_pci_parse_ef100_entry(struct efx_nic *efx, int entry_location,
+				       struct ef100_func_ctl_window *result)
+{
+	u64 offset = ef100_pci_get_bar_bits(efx, entry_location, EF100_FUNC_CTL_WIN_OFF) <<
+					ESE_GZ_EF100_FUNC_CTL_WIN_OFF_SHIFT;
+	u32 bar = ef100_pci_get_bar_bits(efx, entry_location, EF100_BAR);
+
+	netif_dbg(efx, probe, efx->net_dev,
+		  "Found EF100 function control window bar=%d offset=0x%llx\n",
+		  bar, offset);
+
+	if (result->valid) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Duplicated EF100 table entry.\n");
+		return -EINVAL;
+	}
+
+	if (bar == ESE_GZ_CFGBAR_EF100_BAR_NUM_EXPANSION_ROM ||
+	    bar == ESE_GZ_CFGBAR_EF100_BAR_NUM_INVALID) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Bad BAR value of %d in Xilinx capabilities EF100 entry.\n",
+			  bar);
+		return -EINVAL;
+	}
+
+	result->bar = bar;
+	result->offset = offset;
+	result->valid = true;
+	return 0;
+}
+
+static bool ef100_pci_does_bar_overflow(struct efx_nic *efx, int bar,
+					u64 next_entry)
+{
+	return next_entry + ESE_GZ_CFGBAR_ENTRY_HEADER_SIZE >
+					pci_resource_len(efx->pci_dev, bar);
+}
+
+/* Parse a Xilinx capabilities table entry describing a continuation to a new
+ * sub-table.
+ */
+static int ef100_pci_parse_continue_entry(struct efx_nic *efx, int entry_location,
+					  struct ef100_func_ctl_window *result)
+{
+	unsigned int previous_bar;
+	efx_oword_t entry;
+	u64 offset;
+	int rc = 0;
+	u32 bar;
+
+	efx_reado(efx, &entry, entry_location);
+
+	bar = EFX_OWORD_FIELD32(entry, ESF_GZ_CFGBAR_CONT_CAP_BAR);
+
+	offset = EFX_OWORD_FIELD64(entry, ESF_GZ_CFGBAR_CONT_CAP_OFFSET) <<
+		ESE_GZ_CONT_CAP_OFFSET_BYTES_SHIFT;
+
+	previous_bar = efx->mem_bar;
+
+	if (bar == ESE_GZ_VSEC_BAR_NUM_EXPANSION_ROM ||
+	    bar == ESE_GZ_VSEC_BAR_NUM_INVALID) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Bad BAR value of %d in Xilinx capabilities sub-table.\n",
+			  bar);
+		return -EINVAL;
+	}
+
+	if (bar != previous_bar) {
+		efx_fini_io(efx);
+
+		if (ef100_pci_does_bar_overflow(efx, bar, offset)) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Xilinx table will overrun BAR[%d] offset=0x%llx\n",
+				  bar, offset);
+			return -EINVAL;
+		}
+
+		/* Temporarily map new BAR. */
+		rc = efx_init_io(efx, bar,
+				 (dma_addr_t)DMA_BIT_MASK(ESF_GZ_TX_SEND_ADDR_WIDTH),
+				 pci_resource_len(efx->pci_dev, bar));
+		if (rc) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Mapping new BAR for Xilinx table failed, rc=%d\n", rc);
+			return rc;
+		}
+	}
+
+	rc = ef100_pci_walk_xilinx_table(efx, offset, result);
+	if (rc)
+		return rc;
+
+	if (bar != previous_bar) {
+		efx_fini_io(efx);
+
+		/* Put old BAR back. */
+		rc = efx_init_io(efx, previous_bar,
+				 (dma_addr_t)DMA_BIT_MASK(ESF_GZ_TX_SEND_ADDR_WIDTH),
+				 pci_resource_len(efx->pci_dev, previous_bar));
+		if (rc) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Putting old BAR back failed, rc=%d\n", rc);
+			return rc;
+		}
+	}
+
+	return 0;
+}
+
+/* Iterate over the Xilinx capabilities table in the currently mapped BAR and
+ * call ef100_pci_parse_ef100_entry() on any EF100 entries and
+ * ef100_pci_parse_continue_entry() on any table continuations.
+ */
+static int ef100_pci_walk_xilinx_table(struct efx_nic *efx, u64 offset,
+				       struct ef100_func_ctl_window *result)
+{
+	u64 current_entry = offset;
+	int rc = 0;
+
+	while (true) {
+		u32 id = ef100_pci_get_bar_bits(efx, current_entry, ENTRY_FORMAT);
+		u32 last = ef100_pci_get_bar_bits(efx, current_entry, ENTRY_LAST);
+		u32 rev = ef100_pci_get_bar_bits(efx, current_entry, ENTRY_REV);
+		u32 entry_size;
+
+		if (id == ESE_GZ_CFGBAR_ENTRY_LAST)
+			return 0;
+
+		entry_size = ef100_pci_get_bar_bits(efx, current_entry, ENTRY_SIZE);
+
+		netif_dbg(efx, probe, efx->net_dev,
+			  "Seen Xilinx table entry 0x%x size 0x%x at 0x%llx in BAR[%d]\n",
+			  id, entry_size, current_entry, efx->mem_bar);
+
+		if (entry_size < sizeof(u32) * 2) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Xilinx table entry too short len=0x%x\n", entry_size);
+			return -EINVAL;
+		}
+
+		switch (id) {
+		case ESE_GZ_CFGBAR_ENTRY_EF100:
+			if (rev != ESE_GZ_CFGBAR_ENTRY_REV_EF100 ||
+			    entry_size < ESE_GZ_CFGBAR_ENTRY_SIZE_EF100) {
+				netif_err(efx, probe, efx->net_dev,
+					  "Bad length or rev for EF100 entry in Xilinx capabilities table. entry_size=%d rev=%d.\n",
+					  entry_size, rev);
+				return -EINVAL;
+			}
+
+			rc = ef100_pci_parse_ef100_entry(efx, current_entry,
+							 result);
+			if (rc)
+				return rc;
+			break;
+		case ESE_GZ_CFGBAR_ENTRY_CONT_CAP_ADDR:
+			if (rev != 0 || entry_size < ESE_GZ_CFGBAR_CONT_CAP_MIN_LENGTH) {
+				netif_err(efx, probe, efx->net_dev,
+					  "Bad length or rev for continue entry in Xilinx capabilities table. entry_size=%d rev=%d.\n",
+					  entry_size, rev);
+				return -EINVAL;
+			}
+
+			rc = ef100_pci_parse_continue_entry(efx, current_entry, result);
+			if (rc)
+				return rc;
+			break;
+		default:
+			/* Ignore unknown table entries. */
+			break;
+		}
+
+		if (last)
+			return 0;
+
+		current_entry += entry_size;
+
+		if (ef100_pci_does_bar_overflow(efx, efx->mem_bar, current_entry)) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Xilinx table overrun at position=0x%llx.\n",
+				  current_entry);
+			return -EINVAL;
+		}
+	}
+}
+
+static int _ef100_pci_get_config_bits_with_width(struct efx_nic *efx,
+						 int structure_start, int lbn,
+						 int width, u32 *result)
+{
+	int rc, pos = structure_start + ROUND_DOWN_TO_DWORD(lbn);
+	u32 temp;
+
+	rc = pci_read_config_dword(efx->pci_dev, pos, &temp);
+	if (rc) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Failed to read PCI config dword at %d\n",
+			  pos);
+		return rc;
+	}
+
+	*result = EXTRACT_BITS(temp, lbn, width);
+
+	return 0;
+}
+
+#define ef100_pci_get_config_bits(efx, entry_location, bitdef, result)	\
+	_ef100_pci_get_config_bits_with_width(efx, entry_location,	\
+		 ESF_GZ_VSEC_ ## bitdef ## _LBN,			\
+		 ESF_GZ_VSEC_ ## bitdef ## _WIDTH, result)
+
+/* Call ef100_pci_walk_xilinx_table() for the Xilinx capabilities table pointed
+ * to by this PCI_EXT_CAP_ID_VNDR.
+ */
+static int ef100_pci_parse_xilinx_cap(struct efx_nic *efx, int vndr_cap,
+				      bool has_offset_hi,
+				      struct ef100_func_ctl_window *result)
+{
+	u32 offset_high = 0;
+	u32 offset_lo = 0;
+	u64 offset = 0;
+	u32 bar = 0;
+	int rc = 0;
+
+	rc = ef100_pci_get_config_bits(efx, vndr_cap, TBL_BAR, &bar);
+	if (rc) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Failed to read ESF_GZ_VSEC_TBL_BAR, rc=%d\n",
+			  rc);
+		return rc;
+	}
+
+	if (bar == ESE_GZ_CFGBAR_CONT_CAP_BAR_NUM_EXPANSION_ROM ||
+	    bar == ESE_GZ_CFGBAR_CONT_CAP_BAR_NUM_INVALID) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Bad BAR value of %d in Xilinx capabilities sub-table.\n",
+			  bar);
+		return -EINVAL;
+	}
+
+	rc = ef100_pci_get_config_bits(efx, vndr_cap, TBL_OFF_LO, &offset_lo);
+	if (rc) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Failed to read ESF_GZ_VSEC_TBL_OFF_LO, rc=%d\n",
+			  rc);
+		return rc;
+	}
+
+	/* Get optional extension to 64bit offset. */
+	if (has_offset_hi) {
+		rc = ef100_pci_get_config_bits(efx, vndr_cap, TBL_OFF_HI, &offset_high);
+		if (rc) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Failed to read ESF_GZ_VSEC_TBL_OFF_HI, rc=%d\n",
+				  rc);
+			return rc;
+		}
+	}
+
+	offset = (((u64)offset_lo) << ESE_GZ_VSEC_TBL_OFF_LO_BYTES_SHIFT) |
+		 (((u64)offset_high) << ESE_GZ_VSEC_TBL_OFF_HI_BYTES_SHIFT);
+
+	if (offset > pci_resource_len(efx->pci_dev, bar) - sizeof(u32) * 2) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Xilinx table will overrun BAR[%d] offset=0x%llx\n",
+			  bar, offset);
+		return -EINVAL;
+	}
+
+	/* Temporarily map BAR. */
+	rc = efx_init_io(efx, bar,
+			 (dma_addr_t)DMA_BIT_MASK(ESF_GZ_TX_SEND_ADDR_WIDTH),
+			 pci_resource_len(efx->pci_dev, bar));
+	if (rc) {
+		netif_err(efx, probe, efx->net_dev,
+			  "efx_init_io failed, rc=%d\n", rc);
+		return rc;
+	}
+
+	rc = ef100_pci_walk_xilinx_table(efx, offset, result);
+
+	/* Unmap temporarily mapped BAR. */
+	efx_fini_io(efx);
+	return rc;
+}
+
+/* Call ef100_pci_parse_ef100_entry() for each Xilinx PCI_EXT_CAP_ID_VNDR
+ * capability.
+ */
+static int ef100_pci_find_func_ctrl_window(struct efx_nic *efx,
+					   struct ef100_func_ctl_window *result)
+{
+	int num_xilinx_caps = 0;
+	int cap = 0;
+
+	result->valid = false;
+
+	while ((cap = pci_find_next_ext_capability(efx->pci_dev, cap, PCI_EXT_CAP_ID_VNDR)) != 0) {
+		int vndr_cap = cap + PCI_EXT_CAP_HDR_LENGTH;
+		u32 vsec_ver = 0;
+		u32 vsec_len = 0;
+		u32 vsec_id = 0;
+		int rc = 0;
+
+		num_xilinx_caps++;
+
+		rc = ef100_pci_get_config_bits(efx, vndr_cap, ID, &vsec_id);
+		if (rc) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Failed to read ESF_GZ_VSEC_ID, rc=%d\n",
+				  rc);
+			return rc;
+		}
+
+		rc = ef100_pci_get_config_bits(efx, vndr_cap, VER, &vsec_ver);
+		if (rc) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Failed to read ESF_GZ_VSEC_VER, rc=%d\n",
+				  rc);
+			return rc;
+		}
+
+		/* Get length of whole capability - i.e. starting at cap */
+		rc = ef100_pci_get_config_bits(efx, vndr_cap, LEN, &vsec_len);
+		if (rc) {
+			netif_err(efx, probe, efx->net_dev,
+				  "Failed to read ESF_GZ_VSEC_LEN, rc=%d\n",
+				  rc);
+			return rc;
+		}
+
+		if (vsec_id == ESE_GZ_XILINX_VSEC_ID &&
+		    vsec_ver == ESE_GZ_VSEC_VER_XIL_CFGBAR &&
+		    vsec_len >= ESE_GZ_VSEC_LEN_MIN) {
+			bool has_offset_hi = (vsec_len >= ESE_GZ_VSEC_LEN_HIGH_OFFT);
+
+			rc = ef100_pci_parse_xilinx_cap(efx, vndr_cap,
+							has_offset_hi, result);
+			if (rc)
+				return rc;
+		}
+	}
+
+	if (num_xilinx_caps && !result->valid) {
+		netif_err(efx, probe, efx->net_dev,
+			  "Seen %d Xilinx tables, but no EF100 entry.\n",
+			  num_xilinx_caps);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Final NIC shutdown
+ * This is called only at module unload (or hotplug removal).  A PF can call
+ * this on its VFs to ensure they are unbound first.
+ */
+static void ef100_pci_remove(struct pci_dev *pci_dev)
+{
+	struct efx_nic *efx = pci_get_drvdata(pci_dev);
+	struct efx_probe_data *probe_data;
+
+	if (!efx)
+		return;
+
+	probe_data = container_of(efx, struct efx_probe_data, efx);
+	ef100_remove_netdev(probe_data);
+#ifdef CONFIG_SFC_SRIOV
+	efx_fini_struct_tc(efx);
+#endif
+
+	ef100_remove(efx);
+	efx_fini_io(efx);
+
+	pci_dbg(pci_dev, "shutdown successful\n");
+
+	pci_disable_pcie_error_reporting(pci_dev);
+
+	pci_set_drvdata(pci_dev, NULL);
+	efx_fini_struct(efx);
+	kfree(probe_data);
+};
+
+static int ef100_pci_probe(struct pci_dev *pci_dev,
+			   const struct pci_device_id *entry)
+{
+	struct ef100_func_ctl_window fcw = { 0 };
+	struct efx_probe_data *probe_data;
+	struct efx_nic *efx;
+	int rc;
+
+	/* Allocate probe data and struct efx_nic */
+	probe_data = kzalloc(sizeof(*probe_data), GFP_KERNEL);
+	if (!probe_data)
+		return -ENOMEM;
+	probe_data->pci_dev = pci_dev;
+	efx = &probe_data->efx;
+
+	efx->type = (const struct efx_nic_type *)entry->driver_data;
+
+	efx->pci_dev = pci_dev;
+	pci_set_drvdata(pci_dev, efx);
+	rc = efx_init_struct(efx, pci_dev);
+	if (rc)
+		goto fail;
+
+	efx->vi_stride = EF100_DEFAULT_VI_STRIDE;
+	pci_info(pci_dev, "Solarflare EF100 NIC detected\n");
+
+	rc = ef100_pci_find_func_ctrl_window(efx, &fcw);
+	if (rc) {
+		pci_err(pci_dev,
+			"Error looking for ef100 function control window, rc=%d\n",
+			rc);
+		goto fail;
+	}
+
+	if (!fcw.valid) {
+		/* Extended capability not found - use defaults. */
+		fcw.bar = EFX_EF100_PCI_DEFAULT_BAR;
+		fcw.offset = 0;
+		fcw.valid = true;
+	}
+
+	if (fcw.offset > pci_resource_len(efx->pci_dev, fcw.bar) - ESE_GZ_FCW_LEN) {
+		pci_err(pci_dev, "Func control window overruns BAR\n");
+		rc = -EIO;
+		goto fail;
+	}
+
+	/* Set up basic I/O (BAR mappings etc) */
+	rc = efx_init_io(efx, fcw.bar,
+			 (dma_addr_t)DMA_BIT_MASK(ESF_GZ_TX_SEND_ADDR_WIDTH),
+			 pci_resource_len(efx->pci_dev, fcw.bar));
+	if (rc)
+		goto fail;
+
+	efx->reg_base = fcw.offset;
+
+	rc = efx->type->probe(efx);
+	if (rc)
+		goto fail;
+
+	efx->state = STATE_PROBED;
+	rc = ef100_probe_netdev(probe_data);
+	if (rc)
+		goto fail;
+
+	pci_dbg(pci_dev, "initialisation successful\n");
+
+	return 0;
+
+fail:
+	ef100_pci_remove(pci_dev);
+	return rc;
+}
+
+#ifdef CONFIG_SFC_SRIOV
+static int ef100_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
+{
+	struct efx_nic *efx = pci_get_drvdata(dev);
+	int rc;
+
+	if (efx->type->sriov_configure) {
+		rc = efx->type->sriov_configure(efx, num_vfs);
+		if (rc)
+			return rc;
+		else
+			return num_vfs;
+	}
+	return -ENOENT;
+}
+#endif
+
+/* PCI device ID table */
+static const struct pci_device_id ef100_pci_table[] = {
+	{PCI_DEVICE(PCI_VENDOR_ID_XILINX, 0x0100),  /* Riverhead PF */
+		.driver_data = (unsigned long) &ef100_pf_nic_type },
+	{PCI_DEVICE(PCI_VENDOR_ID_XILINX, 0x1100),  /* Riverhead VF */
+		.driver_data = (unsigned long) &ef100_vf_nic_type },
+	{0}                     /* end of list */
+};
+
+struct pci_driver ef100_pci_driver = {
+	.name           = "sfc_ef100",
+	.id_table       = ef100_pci_table,
+	.probe          = ef100_pci_probe,
+	.remove         = ef100_pci_remove,
+#ifdef CONFIG_SFC_SRIOV
+	.sriov_configure = ef100_pci_sriov_configure,
+#endif
+	.err_handler    = &efx_err_handlers,
+};
+
+MODULE_DEVICE_TABLE(pci, ef100_pci_table);