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, 430 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/user.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/user.c
new file mode 100644
index 000000000..9b39ec341
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/user.c
@@ -0,0 +1,430 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+#define nvkm_udevice(p) container_of((p), struct nvkm_udevice, object)
+#include "priv.h"
+#include "ctrl.h"
+
+#include <core/client.h>
+#include <subdev/fb.h>
+#include <subdev/instmem.h>
+#include <subdev/timer.h>
+
+#include <nvif/class.h>
+#include <nvif/cl0080.h>
+#include <nvif/unpack.h>
+
+struct nvkm_udevice {
+	struct nvkm_object object;
+	struct nvkm_device *device;
+};
+
+static int
+nvkm_udevice_info_subdev(struct nvkm_device *device, u64 mthd, u64 *data)
+{
+	struct nvkm_subdev *subdev;
+	enum nvkm_subdev_type type;
+
+	switch (mthd & NV_DEVICE_INFO_UNIT) {
+	case NV_DEVICE_HOST(0): type = NVKM_ENGINE_FIFO; break;
+	default:
+		return -EINVAL;
+	}
+
+	subdev = nvkm_device_subdev(device, type, 0);
+	if (subdev)
+		return nvkm_subdev_info(subdev, mthd, data);
+	return -ENODEV;
+}
+
+static void
+nvkm_udevice_info_v1(struct nvkm_device *device,
+		     struct nv_device_info_v1_data *args)
+{
+	if (args->mthd & NV_DEVICE_INFO_UNIT) {
+		if (nvkm_udevice_info_subdev(device, args->mthd, &args->data))
+			args->mthd = NV_DEVICE_INFO_INVALID;
+		return;
+	}
+	args->mthd = NV_DEVICE_INFO_INVALID;
+}
+
+static int
+nvkm_udevice_info(struct nvkm_udevice *udev, void *data, u32 size)
+{
+	struct nvkm_object *object = &udev->object;
+	struct nvkm_device *device = udev->device;
+	struct nvkm_fb *fb = device->fb;
+	struct nvkm_instmem *imem = device->imem;
+	union {
+		struct nv_device_info_v0 v0;
+		struct nv_device_info_v1 v1;
+	} *args = data;
+	int ret = -ENOSYS, i;
+
+	nvif_ioctl(object, "device info size %d\n", size);
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v1, 1, 1, true))) {
+		nvif_ioctl(object, "device info vers %d count %d\n",
+			   args->v1.version, args->v1.count);
+		if (args->v1.count * sizeof(args->v1.data[0]) == size) {
+			for (i = 0; i < args->v1.count; i++)
+				nvkm_udevice_info_v1(device, &args->v1.data[i]);
+			return 0;
+		}
+		return -EINVAL;
+	} else
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+		nvif_ioctl(object, "device info vers %d\n", args->v0.version);
+	} else
+		return ret;
+
+	switch (device->chipset) {
+	case 0x01a:
+	case 0x01f:
+	case 0x04c:
+	case 0x04e:
+	case 0x063:
+	case 0x067:
+	case 0x068:
+	case 0x0aa:
+	case 0x0ac:
+	case 0x0af:
+		args->v0.platform = NV_DEVICE_INFO_V0_IGP;
+		break;
+	default:
+		switch (device->type) {
+		case NVKM_DEVICE_PCI:
+			args->v0.platform = NV_DEVICE_INFO_V0_PCI;
+			break;
+		case NVKM_DEVICE_AGP:
+			args->v0.platform = NV_DEVICE_INFO_V0_AGP;
+			break;
+		case NVKM_DEVICE_PCIE:
+			args->v0.platform = NV_DEVICE_INFO_V0_PCIE;
+			break;
+		case NVKM_DEVICE_TEGRA:
+			args->v0.platform = NV_DEVICE_INFO_V0_SOC;
+			break;
+		default:
+			WARN_ON(1);
+			break;
+		}
+		break;
+	}
+
+	switch (device->card_type) {
+	case NV_04: args->v0.family = NV_DEVICE_INFO_V0_TNT; break;
+	case NV_10:
+	case NV_11: args->v0.family = NV_DEVICE_INFO_V0_CELSIUS; break;
+	case NV_20: args->v0.family = NV_DEVICE_INFO_V0_KELVIN; break;
+	case NV_30: args->v0.family = NV_DEVICE_INFO_V0_RANKINE; break;
+	case NV_40: args->v0.family = NV_DEVICE_INFO_V0_CURIE; break;
+	case NV_50: args->v0.family = NV_DEVICE_INFO_V0_TESLA; break;
+	case NV_C0: args->v0.family = NV_DEVICE_INFO_V0_FERMI; break;
+	case NV_E0: args->v0.family = NV_DEVICE_INFO_V0_KEPLER; break;
+	case GM100: args->v0.family = NV_DEVICE_INFO_V0_MAXWELL; break;
+	case GP100: args->v0.family = NV_DEVICE_INFO_V0_PASCAL; break;
+	case GV100: args->v0.family = NV_DEVICE_INFO_V0_VOLTA; break;
+	case TU100: args->v0.family = NV_DEVICE_INFO_V0_TURING; break;
+	case GA100: args->v0.family = NV_DEVICE_INFO_V0_AMPERE; break;
+	default:
+		args->v0.family = 0;
+		break;
+	}
+
+	args->v0.chipset  = device->chipset;
+	args->v0.revision = device->chiprev;
+	if (fb && fb->ram)
+		args->v0.ram_size = args->v0.ram_user = fb->ram->size;
+	else
+		args->v0.ram_size = args->v0.ram_user = 0;
+	if (imem && args->v0.ram_size > 0)
+		args->v0.ram_user = args->v0.ram_user - imem->reserved;
+
+	snprintf(args->v0.chip, sizeof(args->v0.chip), "%s", device->chip->name);
+	snprintf(args->v0.name, sizeof(args->v0.name), "%s", device->name);
+	return 0;
+}
+
+static int
+nvkm_udevice_time(struct nvkm_udevice *udev, void *data, u32 size)
+{
+	struct nvkm_object *object = &udev->object;
+	struct nvkm_device *device = udev->device;
+	union {
+		struct nv_device_time_v0 v0;
+	} *args = data;
+	int ret = -ENOSYS;
+
+	nvif_ioctl(object, "device time size %d\n", size);
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+		nvif_ioctl(object, "device time vers %d\n", args->v0.version);
+		args->v0.time = nvkm_timer_read(device->timer);
+	}
+
+	return ret;
+}
+
+static int
+nvkm_udevice_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	nvif_ioctl(object, "device mthd %08x\n", mthd);
+	switch (mthd) {
+	case NV_DEVICE_V0_INFO:
+		return nvkm_udevice_info(udev, data, size);
+	case NV_DEVICE_V0_TIME:
+		return nvkm_udevice_time(udev, data, size);
+	default:
+		break;
+	}
+	return -EINVAL;
+}
+
+static int
+nvkm_udevice_rd08(struct nvkm_object *object, u64 addr, u8 *data)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	*data = nvkm_rd08(udev->device, addr);
+	return 0;
+}
+
+static int
+nvkm_udevice_rd16(struct nvkm_object *object, u64 addr, u16 *data)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	*data = nvkm_rd16(udev->device, addr);
+	return 0;
+}
+
+static int
+nvkm_udevice_rd32(struct nvkm_object *object, u64 addr, u32 *data)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	*data = nvkm_rd32(udev->device, addr);
+	return 0;
+}
+
+static int
+nvkm_udevice_wr08(struct nvkm_object *object, u64 addr, u8 data)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	nvkm_wr08(udev->device, addr, data);
+	return 0;
+}
+
+static int
+nvkm_udevice_wr16(struct nvkm_object *object, u64 addr, u16 data)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	nvkm_wr16(udev->device, addr, data);
+	return 0;
+}
+
+static int
+nvkm_udevice_wr32(struct nvkm_object *object, u64 addr, u32 data)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	nvkm_wr32(udev->device, addr, data);
+	return 0;
+}
+
+static int
+nvkm_udevice_map(struct nvkm_object *object, void *argv, u32 argc,
+		 enum nvkm_object_map *type, u64 *addr, u64 *size)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	struct nvkm_device *device = udev->device;
+	*type = NVKM_OBJECT_MAP_IO;
+	*addr = device->func->resource_addr(device, 0);
+	*size = device->func->resource_size(device, 0);
+	return 0;
+}
+
+static int
+nvkm_udevice_fini(struct nvkm_object *object, bool suspend)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	struct nvkm_device *device = udev->device;
+	int ret = 0;
+
+	mutex_lock(&device->mutex);
+	if (!--device->refcount) {
+		ret = nvkm_device_fini(device, suspend);
+		if (ret && suspend) {
+			device->refcount++;
+			goto done;
+		}
+	}
+
+done:
+	mutex_unlock(&device->mutex);
+	return ret;
+}
+
+static int
+nvkm_udevice_init(struct nvkm_object *object)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	struct nvkm_device *device = udev->device;
+	int ret = 0;
+
+	mutex_lock(&device->mutex);
+	if (!device->refcount++) {
+		ret = nvkm_device_init(device);
+		if (ret) {
+			device->refcount--;
+			goto done;
+		}
+	}
+
+done:
+	mutex_unlock(&device->mutex);
+	return ret;
+}
+
+static int
+nvkm_udevice_child_new(const struct nvkm_oclass *oclass,
+		       void *data, u32 size, struct nvkm_object **pobject)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(oclass->parent);
+	const struct nvkm_device_oclass *sclass = oclass->priv;
+	return sclass->ctor(udev->device, oclass, data, size, pobject);
+}
+
+static int
+nvkm_udevice_child_get(struct nvkm_object *object, int index,
+		       struct nvkm_oclass *oclass)
+{
+	struct nvkm_udevice *udev = nvkm_udevice(object);
+	struct nvkm_device *device = udev->device;
+	struct nvkm_engine *engine;
+	u64 mask = (1ULL << NVKM_ENGINE_DMAOBJ) |
+		   (1ULL << NVKM_ENGINE_FIFO) |
+		   (1ULL << NVKM_ENGINE_DISP) |
+		   (1ULL << NVKM_ENGINE_PM);
+	const struct nvkm_device_oclass *sclass = NULL;
+	int i;
+
+	for (; i = __ffs64(mask), mask && !sclass; mask &= ~(1ULL << i)) {
+		if (!(engine = nvkm_device_engine(device, i, 0)) ||
+		    !(engine->func->base.sclass))
+			continue;
+		oclass->engine = engine;
+
+		index -= engine->func->base.sclass(oclass, index, &sclass);
+	}
+
+	if (!sclass) {
+		if (index-- == 0)
+			sclass = &nvkm_control_oclass;
+		else if (device->mmu && index-- == 0)
+			sclass = &device->mmu->user;
+		else if (device->fault && index-- == 0)
+			sclass = &device->fault->user;
+		else if (device->vfn && index-- == 0)
+			sclass = &device->vfn->user;
+		else
+			return -EINVAL;
+
+		oclass->base = sclass->base;
+		oclass->engine = NULL;
+	}
+
+	oclass->ctor = nvkm_udevice_child_new;
+	oclass->priv = sclass;
+	return 0;
+}
+
+static const struct nvkm_object_func
+nvkm_udevice_super = {
+	.init = nvkm_udevice_init,
+	.fini = nvkm_udevice_fini,
+	.mthd = nvkm_udevice_mthd,
+	.map = nvkm_udevice_map,
+	.rd08 = nvkm_udevice_rd08,
+	.rd16 = nvkm_udevice_rd16,
+	.rd32 = nvkm_udevice_rd32,
+	.wr08 = nvkm_udevice_wr08,
+	.wr16 = nvkm_udevice_wr16,
+	.wr32 = nvkm_udevice_wr32,
+	.sclass = nvkm_udevice_child_get,
+};
+
+static const struct nvkm_object_func
+nvkm_udevice = {
+	.init = nvkm_udevice_init,
+	.fini = nvkm_udevice_fini,
+	.mthd = nvkm_udevice_mthd,
+	.sclass = nvkm_udevice_child_get,
+};
+
+static int
+nvkm_udevice_new(const struct nvkm_oclass *oclass, void *data, u32 size,
+		 struct nvkm_object **pobject)
+{
+	union {
+		struct nv_device_v0 v0;
+	} *args = data;
+	struct nvkm_client *client = oclass->client;
+	struct nvkm_object *parent = &client->object;
+	const struct nvkm_object_func *func;
+	struct nvkm_udevice *udev;
+	int ret = -ENOSYS;
+
+	nvif_ioctl(parent, "create device size %d\n", size);
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+		nvif_ioctl(parent, "create device v%d device %016llx\n",
+			   args->v0.version, args->v0.device);
+	} else
+		return ret;
+
+	/* give priviledged clients register access */
+	if (args->v0.priv)
+		func = &nvkm_udevice_super;
+	else
+		func = &nvkm_udevice;
+
+	if (!(udev = kzalloc(sizeof(*udev), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_object_ctor(func, oclass, &udev->object);
+	*pobject = &udev->object;
+
+	/* find the device that matches what the client requested */
+	if (args->v0.device != ~0)
+		udev->device = nvkm_device_find(args->v0.device);
+	else
+		udev->device = nvkm_device_find(client->device);
+	if (!udev->device)
+		return -ENODEV;
+
+	return 0;
+}
+
+const struct nvkm_sclass
+nvkm_udevice_sclass = {
+	.oclass = NV_DEVICE,
+	.minver = 0,
+	.maxver = 0,
+	.ctor = nvkm_udevice_new,
+};