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, 599 insertions, 0 deletions

diff --git a/drivers/gpu/drm/tegra/nvdec.c b/drivers/gpu/drm/tegra/nvdec.c
new file mode 100644
index 000000000..10fd21517
--- /dev/null
+++ b/drivers/gpu/drm/tegra/nvdec.c
@@ -0,0 +1,599 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2015-2022, NVIDIA Corporation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/host1x.h>
+#include <linux/iommu.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+
+#include <soc/tegra/mc.h>
+
+#include "drm.h"
+#include "falcon.h"
+#include "riscv.h"
+#include "vic.h"
+
+#define NVDEC_FALCON_DEBUGINFO			0x1094
+#define NVDEC_TFBIF_TRANSCFG			0x2c44
+
+struct nvdec_config {
+	const char *firmware;
+	unsigned int version;
+	bool supports_sid;
+	bool has_riscv;
+	bool has_extra_clocks;
+};
+
+struct nvdec {
+	struct falcon falcon;
+
+	void __iomem *regs;
+	struct tegra_drm_client client;
+	struct host1x_channel *channel;
+	struct device *dev;
+	struct clk_bulk_data clks[3];
+	unsigned int num_clks;
+	struct reset_control *reset;
+
+	/* Platform configuration */
+	const struct nvdec_config *config;
+
+	/* RISC-V specific data */
+	struct tegra_drm_riscv riscv;
+	phys_addr_t carveout_base;
+};
+
+static inline struct nvdec *to_nvdec(struct tegra_drm_client *client)
+{
+	return container_of(client, struct nvdec, client);
+}
+
+static inline void nvdec_writel(struct nvdec *nvdec, u32 value,
+				unsigned int offset)
+{
+	writel(value, nvdec->regs + offset);
+}
+
+static int nvdec_boot_falcon(struct nvdec *nvdec)
+{
+#ifdef CONFIG_IOMMU_API
+	struct iommu_fwspec *spec = dev_iommu_fwspec_get(nvdec->dev);
+#endif
+	int err;
+
+#ifdef CONFIG_IOMMU_API
+	if (nvdec->config->supports_sid && spec) {
+		u32 value;
+
+		value = TRANSCFG_ATT(1, TRANSCFG_SID_FALCON) | TRANSCFG_ATT(0, TRANSCFG_SID_HW);
+		nvdec_writel(nvdec, value, NVDEC_TFBIF_TRANSCFG);
+
+		if (spec->num_ids > 0) {
+			value = spec->ids[0] & 0xffff;
+
+			nvdec_writel(nvdec, value, VIC_THI_STREAMID0);
+			nvdec_writel(nvdec, value, VIC_THI_STREAMID1);
+		}
+	}
+#endif
+
+	err = falcon_boot(&nvdec->falcon);
+	if (err < 0)
+		return err;
+
+	err = falcon_wait_idle(&nvdec->falcon);
+	if (err < 0) {
+		dev_err(nvdec->dev, "falcon boot timed out\n");
+		return err;
+	}
+
+	return 0;
+}
+
+static int nvdec_wait_debuginfo(struct nvdec *nvdec, const char *phase)
+{
+	int err;
+	u32 val;
+
+	err = readl_poll_timeout(nvdec->regs + NVDEC_FALCON_DEBUGINFO, val, val == 0x0, 10, 100000);
+	if (err) {
+		dev_err(nvdec->dev, "failed to boot %s, debuginfo=0x%x\n", phase, val);
+		return err;
+	}
+
+	return 0;
+}
+
+static int nvdec_boot_riscv(struct nvdec *nvdec)
+{
+	int err;
+
+	err = reset_control_acquire(nvdec->reset);
+	if (err)
+		return err;
+
+	nvdec_writel(nvdec, 0xabcd1234, NVDEC_FALCON_DEBUGINFO);
+
+	err = tegra_drm_riscv_boot_bootrom(&nvdec->riscv, nvdec->carveout_base, 1,
+					   &nvdec->riscv.bl_desc);
+	if (err) {
+		dev_err(nvdec->dev, "failed to execute bootloader\n");
+		goto release_reset;
+	}
+
+	err = nvdec_wait_debuginfo(nvdec, "bootloader");
+	if (err)
+		goto release_reset;
+
+	err = reset_control_reset(nvdec->reset);
+	if (err)
+		goto release_reset;
+
+	nvdec_writel(nvdec, 0xabcd1234, NVDEC_FALCON_DEBUGINFO);
+
+	err = tegra_drm_riscv_boot_bootrom(&nvdec->riscv, nvdec->carveout_base, 1,
+					   &nvdec->riscv.os_desc);
+	if (err) {
+		dev_err(nvdec->dev, "failed to execute firmware\n");
+		goto release_reset;
+	}
+
+	err = nvdec_wait_debuginfo(nvdec, "firmware");
+	if (err)
+		goto release_reset;
+
+release_reset:
+	reset_control_release(nvdec->reset);
+
+	return err;
+}
+
+static int nvdec_init(struct host1x_client *client)
+{
+	struct tegra_drm_client *drm = host1x_to_drm_client(client);
+	struct drm_device *dev = dev_get_drvdata(client->host);
+	struct tegra_drm *tegra = dev->dev_private;
+	struct nvdec *nvdec = to_nvdec(drm);
+	int err;
+
+	err = host1x_client_iommu_attach(client);
+	if (err < 0 && err != -ENODEV) {
+		dev_err(nvdec->dev, "failed to attach to domain: %d\n", err);
+		return err;
+	}
+
+	nvdec->channel = host1x_channel_request(client);
+	if (!nvdec->channel) {
+		err = -ENOMEM;
+		goto detach;
+	}
+
+	client->syncpts[0] = host1x_syncpt_request(client, 0);
+	if (!client->syncpts[0]) {
+		err = -ENOMEM;
+		goto free_channel;
+	}
+
+	pm_runtime_enable(client->dev);
+	pm_runtime_use_autosuspend(client->dev);
+	pm_runtime_set_autosuspend_delay(client->dev, 500);
+
+	err = tegra_drm_register_client(tegra, drm);
+	if (err < 0)
+		goto disable_rpm;
+
+	/*
+	 * Inherit the DMA parameters (such as maximum segment size) from the
+	 * parent host1x device.
+	 */
+	client->dev->dma_parms = client->host->dma_parms;
+
+	return 0;
+
+disable_rpm:
+	pm_runtime_dont_use_autosuspend(client->dev);
+	pm_runtime_force_suspend(client->dev);
+
+	host1x_syncpt_put(client->syncpts[0]);
+free_channel:
+	host1x_channel_put(nvdec->channel);
+detach:
+	host1x_client_iommu_detach(client);
+
+	return err;
+}
+
+static int nvdec_exit(struct host1x_client *client)
+{
+	struct tegra_drm_client *drm = host1x_to_drm_client(client);
+	struct drm_device *dev = dev_get_drvdata(client->host);
+	struct tegra_drm *tegra = dev->dev_private;
+	struct nvdec *nvdec = to_nvdec(drm);
+	int err;
+
+	/* avoid a dangling pointer just in case this disappears */
+	client->dev->dma_parms = NULL;
+
+	err = tegra_drm_unregister_client(tegra, drm);
+	if (err < 0)
+		return err;
+
+	pm_runtime_dont_use_autosuspend(client->dev);
+	pm_runtime_force_suspend(client->dev);
+
+	host1x_syncpt_put(client->syncpts[0]);
+	host1x_channel_put(nvdec->channel);
+	host1x_client_iommu_detach(client);
+
+	nvdec->channel = NULL;
+
+	if (client->group) {
+		dma_unmap_single(nvdec->dev, nvdec->falcon.firmware.phys,
+				 nvdec->falcon.firmware.size, DMA_TO_DEVICE);
+		tegra_drm_free(tegra, nvdec->falcon.firmware.size,
+			       nvdec->falcon.firmware.virt,
+			       nvdec->falcon.firmware.iova);
+	} else {
+		dma_free_coherent(nvdec->dev, nvdec->falcon.firmware.size,
+				  nvdec->falcon.firmware.virt,
+				  nvdec->falcon.firmware.iova);
+	}
+
+	return 0;
+}
+
+static const struct host1x_client_ops nvdec_client_ops = {
+	.init = nvdec_init,
+	.exit = nvdec_exit,
+};
+
+static int nvdec_load_falcon_firmware(struct nvdec *nvdec)
+{
+	struct host1x_client *client = &nvdec->client.base;
+	struct tegra_drm *tegra = nvdec->client.drm;
+	dma_addr_t iova;
+	size_t size;
+	void *virt;
+	int err;
+
+	if (nvdec->falcon.firmware.virt)
+		return 0;
+
+	err = falcon_read_firmware(&nvdec->falcon, nvdec->config->firmware);
+	if (err < 0)
+		return err;
+
+	size = nvdec->falcon.firmware.size;
+
+	if (!client->group) {
+		virt = dma_alloc_coherent(nvdec->dev, size, &iova, GFP_KERNEL);
+
+		err = dma_mapping_error(nvdec->dev, iova);
+		if (err < 0)
+			return err;
+	} else {
+		virt = tegra_drm_alloc(tegra, size, &iova);
+	}
+
+	nvdec->falcon.firmware.virt = virt;
+	nvdec->falcon.firmware.iova = iova;
+
+	err = falcon_load_firmware(&nvdec->falcon);
+	if (err < 0)
+		goto cleanup;
+
+	/*
+	 * In this case we have received an IOVA from the shared domain, so we
+	 * need to make sure to get the physical address so that the DMA API
+	 * knows what memory pages to flush the cache for.
+	 */
+	if (client->group) {
+		dma_addr_t phys;
+
+		phys = dma_map_single(nvdec->dev, virt, size, DMA_TO_DEVICE);
+
+		err = dma_mapping_error(nvdec->dev, phys);
+		if (err < 0)
+			goto cleanup;
+
+		nvdec->falcon.firmware.phys = phys;
+	}
+
+	return 0;
+
+cleanup:
+	if (!client->group)
+		dma_free_coherent(nvdec->dev, size, virt, iova);
+	else
+		tegra_drm_free(tegra, size, virt, iova);
+
+	return err;
+}
+
+static __maybe_unused int nvdec_runtime_resume(struct device *dev)
+{
+	struct nvdec *nvdec = dev_get_drvdata(dev);
+	int err;
+
+	err = clk_bulk_prepare_enable(nvdec->num_clks, nvdec->clks);
+	if (err < 0)
+		return err;
+
+	usleep_range(10, 20);
+
+	if (nvdec->config->has_riscv) {
+		err = nvdec_boot_riscv(nvdec);
+		if (err < 0)
+			goto disable;
+	} else {
+		err = nvdec_load_falcon_firmware(nvdec);
+		if (err < 0)
+			goto disable;
+
+		err = nvdec_boot_falcon(nvdec);
+		if (err < 0)
+			goto disable;
+	}
+
+	return 0;
+
+disable:
+	clk_bulk_disable_unprepare(nvdec->num_clks, nvdec->clks);
+	return err;
+}
+
+static __maybe_unused int nvdec_runtime_suspend(struct device *dev)
+{
+	struct nvdec *nvdec = dev_get_drvdata(dev);
+
+	host1x_channel_stop(nvdec->channel);
+
+	clk_bulk_disable_unprepare(nvdec->num_clks, nvdec->clks);
+
+	return 0;
+}
+
+static int nvdec_open_channel(struct tegra_drm_client *client,
+			    struct tegra_drm_context *context)
+{
+	struct nvdec *nvdec = to_nvdec(client);
+
+	context->channel = host1x_channel_get(nvdec->channel);
+	if (!context->channel)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void nvdec_close_channel(struct tegra_drm_context *context)
+{
+	host1x_channel_put(context->channel);
+}
+
+static int nvdec_can_use_memory_ctx(struct tegra_drm_client *client, bool *supported)
+{
+	*supported = true;
+
+	return 0;
+}
+
+static const struct tegra_drm_client_ops nvdec_ops = {
+	.open_channel = nvdec_open_channel,
+	.close_channel = nvdec_close_channel,
+	.submit = tegra_drm_submit,
+	.get_streamid_offset = tegra_drm_get_streamid_offset_thi,
+	.can_use_memory_ctx = nvdec_can_use_memory_ctx,
+};
+
+#define NVIDIA_TEGRA_210_NVDEC_FIRMWARE "nvidia/tegra210/nvdec.bin"
+
+static const struct nvdec_config nvdec_t210_config = {
+	.firmware = NVIDIA_TEGRA_210_NVDEC_FIRMWARE,
+	.version = 0x21,
+	.supports_sid = false,
+};
+
+#define NVIDIA_TEGRA_186_NVDEC_FIRMWARE "nvidia/tegra186/nvdec.bin"
+
+static const struct nvdec_config nvdec_t186_config = {
+	.firmware = NVIDIA_TEGRA_186_NVDEC_FIRMWARE,
+	.version = 0x18,
+	.supports_sid = true,
+};
+
+#define NVIDIA_TEGRA_194_NVDEC_FIRMWARE "nvidia/tegra194/nvdec.bin"
+
+static const struct nvdec_config nvdec_t194_config = {
+	.firmware = NVIDIA_TEGRA_194_NVDEC_FIRMWARE,
+	.version = 0x19,
+	.supports_sid = true,
+};
+
+static const struct nvdec_config nvdec_t234_config = {
+	.version = 0x23,
+	.supports_sid = true,
+	.has_riscv = true,
+	.has_extra_clocks = true,
+};
+
+static const struct of_device_id tegra_nvdec_of_match[] = {
+	{ .compatible = "nvidia,tegra210-nvdec", .data = &nvdec_t210_config },
+	{ .compatible = "nvidia,tegra186-nvdec", .data = &nvdec_t186_config },
+	{ .compatible = "nvidia,tegra194-nvdec", .data = &nvdec_t194_config },
+	{ .compatible = "nvidia,tegra234-nvdec", .data = &nvdec_t234_config },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, tegra_nvdec_of_match);
+
+static int nvdec_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct host1x_syncpt **syncpts;
+	struct nvdec *nvdec;
+	u32 host_class;
+	int err;
+
+	/* inherit DMA mask from host1x parent */
+	err = dma_coerce_mask_and_coherent(dev, *dev->parent->dma_mask);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err);
+		return err;
+	}
+
+	nvdec = devm_kzalloc(dev, sizeof(*nvdec), GFP_KERNEL);
+	if (!nvdec)
+		return -ENOMEM;
+
+	nvdec->config = of_device_get_match_data(dev);
+
+	syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL);
+	if (!syncpts)
+		return -ENOMEM;
+
+	nvdec->regs = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
+	if (IS_ERR(nvdec->regs))
+		return PTR_ERR(nvdec->regs);
+
+	nvdec->clks[0].id = "nvdec";
+	nvdec->num_clks = 1;
+
+	if (nvdec->config->has_extra_clocks) {
+		nvdec->num_clks = 3;
+		nvdec->clks[1].id = "fuse";
+		nvdec->clks[2].id = "tsec_pka";
+	}
+
+	err = devm_clk_bulk_get(dev, nvdec->num_clks, nvdec->clks);
+	if (err) {
+		dev_err(&pdev->dev, "failed to get clock(s)\n");
+		return err;
+	}
+
+	err = clk_set_rate(nvdec->clks[0].clk, ULONG_MAX);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to set clock rate\n");
+		return err;
+	}
+
+	err = of_property_read_u32(dev->of_node, "nvidia,host1x-class", &host_class);
+	if (err < 0)
+		host_class = HOST1X_CLASS_NVDEC;
+
+	if (nvdec->config->has_riscv) {
+		struct tegra_mc *mc;
+
+		mc = devm_tegra_memory_controller_get(dev);
+		if (IS_ERR(mc)) {
+			dev_err_probe(dev, PTR_ERR(mc),
+				"failed to get memory controller handle\n");
+			return PTR_ERR(mc);
+		}
+
+		err = tegra_mc_get_carveout_info(mc, 1, &nvdec->carveout_base, NULL);
+		if (err) {
+			dev_err(dev, "failed to get carveout info: %d\n", err);
+			return err;
+		}
+
+		nvdec->reset = devm_reset_control_get_exclusive_released(dev, "nvdec");
+		if (IS_ERR(nvdec->reset)) {
+			dev_err_probe(dev, PTR_ERR(nvdec->reset), "failed to get reset\n");
+			return PTR_ERR(nvdec->reset);
+		}
+
+		nvdec->riscv.dev = dev;
+		nvdec->riscv.regs = nvdec->regs;
+
+		err = tegra_drm_riscv_read_descriptors(&nvdec->riscv);
+		if (err < 0)
+			return err;
+	} else {
+		nvdec->falcon.dev = dev;
+		nvdec->falcon.regs = nvdec->regs;
+
+		err = falcon_init(&nvdec->falcon);
+		if (err < 0)
+			return err;
+	}
+
+	platform_set_drvdata(pdev, nvdec);
+
+	INIT_LIST_HEAD(&nvdec->client.base.list);
+	nvdec->client.base.ops = &nvdec_client_ops;
+	nvdec->client.base.dev = dev;
+	nvdec->client.base.class = host_class;
+	nvdec->client.base.syncpts = syncpts;
+	nvdec->client.base.num_syncpts = 1;
+	nvdec->dev = dev;
+
+	INIT_LIST_HEAD(&nvdec->client.list);
+	nvdec->client.version = nvdec->config->version;
+	nvdec->client.ops = &nvdec_ops;
+
+	err = host1x_client_register(&nvdec->client.base);
+	if (err < 0) {
+		dev_err(dev, "failed to register host1x client: %d\n", err);
+		goto exit_falcon;
+	}
+
+	return 0;
+
+exit_falcon:
+	falcon_exit(&nvdec->falcon);
+
+	return err;
+}
+
+static int nvdec_remove(struct platform_device *pdev)
+{
+	struct nvdec *nvdec = platform_get_drvdata(pdev);
+	int err;
+
+	err = host1x_client_unregister(&nvdec->client.base);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
+			err);
+		return err;
+	}
+
+	falcon_exit(&nvdec->falcon);
+
+	return 0;
+}
+
+static const struct dev_pm_ops nvdec_pm_ops = {
+	SET_RUNTIME_PM_OPS(nvdec_runtime_suspend, nvdec_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+};
+
+struct platform_driver tegra_nvdec_driver = {
+	.driver = {
+		.name = "tegra-nvdec",
+		.of_match_table = tegra_nvdec_of_match,
+		.pm = &nvdec_pm_ops
+	},
+	.probe = nvdec_probe,
+	.remove = nvdec_remove,
+};
+
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
+MODULE_FIRMWARE(NVIDIA_TEGRA_210_NVDEC_FIRMWARE);
+#endif
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC)
+MODULE_FIRMWARE(NVIDIA_TEGRA_186_NVDEC_FIRMWARE);
+#endif
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
+MODULE_FIRMWARE(NVIDIA_TEGRA_194_NVDEC_FIRMWARE);
+#endif