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, 380 insertions, 0 deletions

diff --git a/drivers/soc/aspeed/aspeed-lpc-snoop.c b/drivers/soc/aspeed/aspeed-lpc-snoop.c
new file mode 100644
index 000000000..eceeaf8df
--- /dev/null
+++ b/drivers/soc/aspeed/aspeed-lpc-snoop.c
@@ -0,0 +1,380 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2017 Google Inc
+ *
+ * Provides a simple driver to control the ASPEED LPC snoop interface which
+ * allows the BMC to listen on and save the data written by
+ * the host to an arbitrary LPC I/O port.
+ *
+ * Typically used by the BMC to "watch" host boot progress via port
+ * 0x80 writes made by the BIOS during the boot process.
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/fs.h>
+#include <linux/kfifo.h>
+#include <linux/mfd/syscon.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/poll.h>
+#include <linux/regmap.h>
+
+#define DEVICE_NAME	"aspeed-lpc-snoop"
+
+#define NUM_SNOOP_CHANNELS 2
+#define SNOOP_FIFO_SIZE 2048
+
+#define HICR5	0x80
+#define HICR5_EN_SNP0W		BIT(0)
+#define HICR5_ENINT_SNP0W	BIT(1)
+#define HICR5_EN_SNP1W		BIT(2)
+#define HICR5_ENINT_SNP1W	BIT(3)
+#define HICR6	0x84
+#define HICR6_STR_SNP0W		BIT(0)
+#define HICR6_STR_SNP1W		BIT(1)
+#define SNPWADR	0x90
+#define SNPWADR_CH0_MASK	GENMASK(15, 0)
+#define SNPWADR_CH0_SHIFT	0
+#define SNPWADR_CH1_MASK	GENMASK(31, 16)
+#define SNPWADR_CH1_SHIFT	16
+#define SNPWDR	0x94
+#define SNPWDR_CH0_MASK		GENMASK(7, 0)
+#define SNPWDR_CH0_SHIFT	0
+#define SNPWDR_CH1_MASK		GENMASK(15, 8)
+#define SNPWDR_CH1_SHIFT	8
+#define HICRB	0x100
+#define HICRB_ENSNP0D		BIT(14)
+#define HICRB_ENSNP1D		BIT(15)
+
+struct aspeed_lpc_snoop_model_data {
+	/* The ast2400 has bits 14 and 15 as reserved, whereas the ast2500
+	 * can use them.
+	 */
+	unsigned int has_hicrb_ensnp;
+};
+
+struct aspeed_lpc_snoop_channel {
+	struct kfifo		fifo;
+	wait_queue_head_t	wq;
+	struct miscdevice	miscdev;
+};
+
+struct aspeed_lpc_snoop {
+	struct regmap		*regmap;
+	int			irq;
+	struct clk		*clk;
+	struct aspeed_lpc_snoop_channel chan[NUM_SNOOP_CHANNELS];
+};
+
+static struct aspeed_lpc_snoop_channel *snoop_file_to_chan(struct file *file)
+{
+	return container_of(file->private_data,
+			    struct aspeed_lpc_snoop_channel,
+			    miscdev);
+}
+
+static ssize_t snoop_file_read(struct file *file, char __user *buffer,
+				size_t count, loff_t *ppos)
+{
+	struct aspeed_lpc_snoop_channel *chan = snoop_file_to_chan(file);
+	unsigned int copied;
+	int ret = 0;
+
+	if (kfifo_is_empty(&chan->fifo)) {
+		if (file->f_flags & O_NONBLOCK)
+			return -EAGAIN;
+		ret = wait_event_interruptible(chan->wq,
+				!kfifo_is_empty(&chan->fifo));
+		if (ret == -ERESTARTSYS)
+			return -EINTR;
+	}
+	ret = kfifo_to_user(&chan->fifo, buffer, count, &copied);
+	if (ret)
+		return ret;
+
+	return copied;
+}
+
+static __poll_t snoop_file_poll(struct file *file,
+				    struct poll_table_struct *pt)
+{
+	struct aspeed_lpc_snoop_channel *chan = snoop_file_to_chan(file);
+
+	poll_wait(file, &chan->wq, pt);
+	return !kfifo_is_empty(&chan->fifo) ? EPOLLIN : 0;
+}
+
+static const struct file_operations snoop_fops = {
+	.owner  = THIS_MODULE,
+	.read   = snoop_file_read,
+	.poll   = snoop_file_poll,
+	.llseek = noop_llseek,
+};
+
+/* Save a byte to a FIFO and discard the oldest byte if FIFO is full */
+static void put_fifo_with_discard(struct aspeed_lpc_snoop_channel *chan, u8 val)
+{
+	if (!kfifo_initialized(&chan->fifo))
+		return;
+	if (kfifo_is_full(&chan->fifo))
+		kfifo_skip(&chan->fifo);
+	kfifo_put(&chan->fifo, val);
+	wake_up_interruptible(&chan->wq);
+}
+
+static irqreturn_t aspeed_lpc_snoop_irq(int irq, void *arg)
+{
+	struct aspeed_lpc_snoop *lpc_snoop = arg;
+	u32 reg, data;
+
+	if (regmap_read(lpc_snoop->regmap, HICR6, &reg))
+		return IRQ_NONE;
+
+	/* Check if one of the snoop channels is interrupting */
+	reg &= (HICR6_STR_SNP0W | HICR6_STR_SNP1W);
+	if (!reg)
+		return IRQ_NONE;
+
+	/* Ack pending IRQs */
+	regmap_write(lpc_snoop->regmap, HICR6, reg);
+
+	/* Read and save most recent snoop'ed data byte to FIFO */
+	regmap_read(lpc_snoop->regmap, SNPWDR, &data);
+
+	if (reg & HICR6_STR_SNP0W) {
+		u8 val = (data & SNPWDR_CH0_MASK) >> SNPWDR_CH0_SHIFT;
+
+		put_fifo_with_discard(&lpc_snoop->chan[0], val);
+	}
+	if (reg & HICR6_STR_SNP1W) {
+		u8 val = (data & SNPWDR_CH1_MASK) >> SNPWDR_CH1_SHIFT;
+
+		put_fifo_with_discard(&lpc_snoop->chan[1], val);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int aspeed_lpc_snoop_config_irq(struct aspeed_lpc_snoop *lpc_snoop,
+				       struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	int rc;
+
+	lpc_snoop->irq = platform_get_irq(pdev, 0);
+	if (!lpc_snoop->irq)
+		return -ENODEV;
+
+	rc = devm_request_irq(dev, lpc_snoop->irq,
+			      aspeed_lpc_snoop_irq, IRQF_SHARED,
+			      DEVICE_NAME, lpc_snoop);
+	if (rc < 0) {
+		dev_warn(dev, "Unable to request IRQ %d\n", lpc_snoop->irq);
+		lpc_snoop->irq = 0;
+		return rc;
+	}
+
+	return 0;
+}
+
+static int aspeed_lpc_enable_snoop(struct aspeed_lpc_snoop *lpc_snoop,
+				   struct device *dev,
+				   int channel, u16 lpc_port)
+{
+	int rc = 0;
+	u32 hicr5_en, snpwadr_mask, snpwadr_shift, hicrb_en;
+	const struct aspeed_lpc_snoop_model_data *model_data =
+		of_device_get_match_data(dev);
+
+	init_waitqueue_head(&lpc_snoop->chan[channel].wq);
+	/* Create FIFO datastructure */
+	rc = kfifo_alloc(&lpc_snoop->chan[channel].fifo,
+			 SNOOP_FIFO_SIZE, GFP_KERNEL);
+	if (rc)
+		return rc;
+
+	lpc_snoop->chan[channel].miscdev.minor = MISC_DYNAMIC_MINOR;
+	lpc_snoop->chan[channel].miscdev.name =
+		devm_kasprintf(dev, GFP_KERNEL, "%s%d", DEVICE_NAME, channel);
+	lpc_snoop->chan[channel].miscdev.fops = &snoop_fops;
+	lpc_snoop->chan[channel].miscdev.parent = dev;
+	rc = misc_register(&lpc_snoop->chan[channel].miscdev);
+	if (rc)
+		return rc;
+
+	/* Enable LPC snoop channel at requested port */
+	switch (channel) {
+	case 0:
+		hicr5_en = HICR5_EN_SNP0W | HICR5_ENINT_SNP0W;
+		snpwadr_mask = SNPWADR_CH0_MASK;
+		snpwadr_shift = SNPWADR_CH0_SHIFT;
+		hicrb_en = HICRB_ENSNP0D;
+		break;
+	case 1:
+		hicr5_en = HICR5_EN_SNP1W | HICR5_ENINT_SNP1W;
+		snpwadr_mask = SNPWADR_CH1_MASK;
+		snpwadr_shift = SNPWADR_CH1_SHIFT;
+		hicrb_en = HICRB_ENSNP1D;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(lpc_snoop->regmap, HICR5, hicr5_en, hicr5_en);
+	regmap_update_bits(lpc_snoop->regmap, SNPWADR, snpwadr_mask,
+			   lpc_port << snpwadr_shift);
+	if (model_data->has_hicrb_ensnp)
+		regmap_update_bits(lpc_snoop->regmap, HICRB,
+				hicrb_en, hicrb_en);
+
+	return rc;
+}
+
+static void aspeed_lpc_disable_snoop(struct aspeed_lpc_snoop *lpc_snoop,
+				     int channel)
+{
+	switch (channel) {
+	case 0:
+		regmap_update_bits(lpc_snoop->regmap, HICR5,
+				   HICR5_EN_SNP0W | HICR5_ENINT_SNP0W,
+				   0);
+		break;
+	case 1:
+		regmap_update_bits(lpc_snoop->regmap, HICR5,
+				   HICR5_EN_SNP1W | HICR5_ENINT_SNP1W,
+				   0);
+		break;
+	default:
+		return;
+	}
+
+	kfifo_free(&lpc_snoop->chan[channel].fifo);
+	misc_deregister(&lpc_snoop->chan[channel].miscdev);
+}
+
+static int aspeed_lpc_snoop_probe(struct platform_device *pdev)
+{
+	struct aspeed_lpc_snoop *lpc_snoop;
+	struct device *dev;
+	struct device_node *np;
+	u32 port;
+	int rc;
+
+	dev = &pdev->dev;
+
+	lpc_snoop = devm_kzalloc(dev, sizeof(*lpc_snoop), GFP_KERNEL);
+	if (!lpc_snoop)
+		return -ENOMEM;
+
+	np = pdev->dev.parent->of_node;
+	if (!of_device_is_compatible(np, "aspeed,ast2400-lpc-v2") &&
+	    !of_device_is_compatible(np, "aspeed,ast2500-lpc-v2") &&
+	    !of_device_is_compatible(np, "aspeed,ast2600-lpc-v2")) {
+		dev_err(dev, "unsupported LPC device binding\n");
+		return -ENODEV;
+	}
+
+	lpc_snoop->regmap = syscon_node_to_regmap(np);
+	if (IS_ERR(lpc_snoop->regmap)) {
+		dev_err(dev, "Couldn't get regmap\n");
+		return -ENODEV;
+	}
+
+	dev_set_drvdata(&pdev->dev, lpc_snoop);
+
+	rc = of_property_read_u32_index(dev->of_node, "snoop-ports", 0, &port);
+	if (rc) {
+		dev_err(dev, "no snoop ports configured\n");
+		return -ENODEV;
+	}
+
+	lpc_snoop->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(lpc_snoop->clk)) {
+		rc = PTR_ERR(lpc_snoop->clk);
+		if (rc != -EPROBE_DEFER)
+			dev_err(dev, "couldn't get clock\n");
+		return rc;
+	}
+	rc = clk_prepare_enable(lpc_snoop->clk);
+	if (rc) {
+		dev_err(dev, "couldn't enable clock\n");
+		return rc;
+	}
+
+	rc = aspeed_lpc_snoop_config_irq(lpc_snoop, pdev);
+	if (rc)
+		goto err;
+
+	rc = aspeed_lpc_enable_snoop(lpc_snoop, dev, 0, port);
+	if (rc)
+		goto err;
+
+	/* Configuration of 2nd snoop channel port is optional */
+	if (of_property_read_u32_index(dev->of_node, "snoop-ports",
+				       1, &port) == 0) {
+		rc = aspeed_lpc_enable_snoop(lpc_snoop, dev, 1, port);
+		if (rc) {
+			aspeed_lpc_disable_snoop(lpc_snoop, 0);
+			goto err;
+		}
+	}
+
+	return 0;
+
+err:
+	clk_disable_unprepare(lpc_snoop->clk);
+
+	return rc;
+}
+
+static int aspeed_lpc_snoop_remove(struct platform_device *pdev)
+{
+	struct aspeed_lpc_snoop *lpc_snoop = dev_get_drvdata(&pdev->dev);
+
+	/* Disable both snoop channels */
+	aspeed_lpc_disable_snoop(lpc_snoop, 0);
+	aspeed_lpc_disable_snoop(lpc_snoop, 1);
+
+	clk_disable_unprepare(lpc_snoop->clk);
+
+	return 0;
+}
+
+static const struct aspeed_lpc_snoop_model_data ast2400_model_data = {
+	.has_hicrb_ensnp = 0,
+};
+
+static const struct aspeed_lpc_snoop_model_data ast2500_model_data = {
+	.has_hicrb_ensnp = 1,
+};
+
+static const struct of_device_id aspeed_lpc_snoop_match[] = {
+	{ .compatible = "aspeed,ast2400-lpc-snoop",
+	  .data = &ast2400_model_data },
+	{ .compatible = "aspeed,ast2500-lpc-snoop",
+	  .data = &ast2500_model_data },
+	{ .compatible = "aspeed,ast2600-lpc-snoop",
+	  .data = &ast2500_model_data },
+	{ },
+};
+
+static struct platform_driver aspeed_lpc_snoop_driver = {
+	.driver = {
+		.name		= DEVICE_NAME,
+		.of_match_table = aspeed_lpc_snoop_match,
+	},
+	.probe = aspeed_lpc_snoop_probe,
+	.remove = aspeed_lpc_snoop_remove,
+};
+
+module_platform_driver(aspeed_lpc_snoop_driver);
+
+MODULE_DEVICE_TABLE(of, aspeed_lpc_snoop_match);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Robert Lippert <rlippert@google.com>");
+MODULE_DESCRIPTION("Linux driver to control Aspeed LPC snoop functionality");