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().
  ...

12 files changed, 1004 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/Kbuild
new file mode 100644
index 000000000..8faee3317
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/Kbuild
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: MIT
+nvkm-y += nvkm/subdev/bar/base.o
+nvkm-y += nvkm/subdev/bar/nv50.o
+nvkm-y += nvkm/subdev/bar/g84.o
+nvkm-y += nvkm/subdev/bar/gf100.o
+nvkm-y += nvkm/subdev/bar/gk20a.o
+nvkm-y += nvkm/subdev/bar/gm107.o
+nvkm-y += nvkm/subdev/bar/gm20b.o
+nvkm-y += nvkm/subdev/bar/tu102.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c
new file mode 100644
index 000000000..d017a1b5e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c
@@ -0,0 +1,142 @@
+/*
+ * 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
+ */
+#include "priv.h"
+
+void
+nvkm_bar_flush(struct nvkm_bar *bar)
+{
+	if (bar && bar->func->flush)
+		bar->func->flush(bar);
+}
+
+struct nvkm_vmm *
+nvkm_bar_bar1_vmm(struct nvkm_device *device)
+{
+	return device->bar->func->bar1.vmm(device->bar);
+}
+
+void
+nvkm_bar_bar1_reset(struct nvkm_device *device)
+{
+	struct nvkm_bar *bar = device->bar;
+	if (bar) {
+		bar->func->bar1.init(bar);
+		bar->func->bar1.wait(bar);
+	}
+}
+
+struct nvkm_vmm *
+nvkm_bar_bar2_vmm(struct nvkm_device *device)
+{
+	/* Denies access to BAR2 when it's not initialised, used by INSTMEM
+	 * to know when object access needs to go through the BAR0 window.
+	 */
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->bar2)
+		return bar->func->bar2.vmm(bar);
+	return NULL;
+}
+
+void
+nvkm_bar_bar2_reset(struct nvkm_device *device)
+{
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->bar2) {
+		bar->func->bar2.init(bar);
+		bar->func->bar2.wait(bar);
+	}
+}
+
+void
+nvkm_bar_bar2_fini(struct nvkm_device *device)
+{
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->bar2) {
+		bar->func->bar2.fini(bar);
+		bar->bar2 = false;
+	}
+}
+
+void
+nvkm_bar_bar2_init(struct nvkm_device *device)
+{
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->subdev.oneinit && !bar->bar2 && bar->func->bar2.init) {
+		bar->func->bar2.init(bar);
+		bar->func->bar2.wait(bar);
+		bar->bar2 = true;
+	}
+}
+
+static int
+nvkm_bar_fini(struct nvkm_subdev *subdev, bool suspend)
+{
+	struct nvkm_bar *bar = nvkm_bar(subdev);
+	if (bar->func->bar1.fini)
+		bar->func->bar1.fini(bar);
+	return 0;
+}
+
+static int
+nvkm_bar_init(struct nvkm_subdev *subdev)
+{
+	struct nvkm_bar *bar = nvkm_bar(subdev);
+	bar->func->bar1.init(bar);
+	bar->func->bar1.wait(bar);
+	if (bar->func->init)
+		bar->func->init(bar);
+	return 0;
+}
+
+static int
+nvkm_bar_oneinit(struct nvkm_subdev *subdev)
+{
+	struct nvkm_bar *bar = nvkm_bar(subdev);
+	return bar->func->oneinit(bar);
+}
+
+static void *
+nvkm_bar_dtor(struct nvkm_subdev *subdev)
+{
+	struct nvkm_bar *bar = nvkm_bar(subdev);
+	nvkm_bar_bar2_fini(subdev->device);
+	return bar->func->dtor(bar);
+}
+
+static const struct nvkm_subdev_func
+nvkm_bar = {
+	.dtor = nvkm_bar_dtor,
+	.oneinit = nvkm_bar_oneinit,
+	.init = nvkm_bar_init,
+	.fini = nvkm_bar_fini,
+};
+
+void
+nvkm_bar_ctor(const struct nvkm_bar_func *func, struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_bar *bar)
+{
+	nvkm_subdev_ctor(&nvkm_bar, device, type, inst, &bar->subdev);
+	bar->func = func;
+	spin_lock_init(&bar->lock);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c
new file mode 100644
index 000000000..77a41bcf8
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2015 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 <bskeggs@redhat.com>
+ */
+#include "nv50.h"
+
+#include <subdev/timer.h>
+
+void
+g84_bar_flush(struct nvkm_bar *bar)
+{
+	struct nvkm_device *device = bar->subdev.device;
+	unsigned long flags;
+	spin_lock_irqsave(&bar->lock, flags);
+	nvkm_wr32(device, 0x070000, 0x00000001);
+	nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x070000) & 0x00000002))
+			break;
+	);
+	spin_unlock_irqrestore(&bar->lock, flags);
+}
+
+static const struct nvkm_bar_func
+g84_bar_func = {
+	.dtor = nv50_bar_dtor,
+	.oneinit = nv50_bar_oneinit,
+	.init = nv50_bar_init,
+	.bar1.init = nv50_bar_bar1_init,
+	.bar1.fini = nv50_bar_bar1_fini,
+	.bar1.wait = nv50_bar_bar1_wait,
+	.bar1.vmm = nv50_bar_bar1_vmm,
+	.bar2.init = nv50_bar_bar2_init,
+	.bar2.fini = nv50_bar_bar2_fini,
+	.bar2.wait = nv50_bar_bar1_wait,
+	.bar2.vmm = nv50_bar_bar2_vmm,
+	.flush = g84_bar_flush,
+};
+
+int
+g84_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	    struct nvkm_bar **pbar)
+{
+	return nv50_bar_new_(&g84_bar_func, device, type, inst, 0x200, pbar);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c
new file mode 100644
index 000000000..51070b7dd
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c
@@ -0,0 +1,196 @@
+/*
+ * 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
+ */
+#include "gf100.h"
+
+#include <core/memory.h>
+#include <core/option.h>
+#include <subdev/fb.h>
+#include <subdev/mmu.h>
+
+struct nvkm_vmm *
+gf100_bar_bar1_vmm(struct nvkm_bar *base)
+{
+	return gf100_bar(base)->bar[1].vmm;
+}
+
+void
+gf100_bar_bar1_wait(struct nvkm_bar *base)
+{
+	/* NFI why it's twice. */
+	nvkm_bar_flush(base);
+	nvkm_bar_flush(base);
+}
+
+void
+gf100_bar_bar1_fini(struct nvkm_bar *bar)
+{
+	nvkm_mask(bar->subdev.device, 0x001704, 0x80000000, 0x00000000);
+}
+
+void
+gf100_bar_bar1_init(struct nvkm_bar *base)
+{
+	struct nvkm_device *device = base->subdev.device;
+	struct gf100_bar *bar = gf100_bar(base);
+	const u32 addr = nvkm_memory_addr(bar->bar[1].inst) >> 12;
+	nvkm_wr32(device, 0x001704, 0x80000000 | addr);
+}
+
+struct nvkm_vmm *
+gf100_bar_bar2_vmm(struct nvkm_bar *base)
+{
+	return gf100_bar(base)->bar[0].vmm;
+}
+
+void
+gf100_bar_bar2_fini(struct nvkm_bar *bar)
+{
+	nvkm_mask(bar->subdev.device, 0x001714, 0x80000000, 0x00000000);
+}
+
+void
+gf100_bar_bar2_init(struct nvkm_bar *base)
+{
+	struct nvkm_device *device = base->subdev.device;
+	struct gf100_bar *bar = gf100_bar(base);
+	u32 addr = nvkm_memory_addr(bar->bar[0].inst) >> 12;
+	if (bar->bar2_halve)
+		addr |= 0x40000000;
+	nvkm_wr32(device, 0x001714, 0x80000000 | addr);
+}
+
+static int
+gf100_bar_oneinit_bar(struct gf100_bar *bar, struct gf100_barN *bar_vm,
+		      struct lock_class_key *key, int bar_nr)
+{
+	struct nvkm_device *device = bar->base.subdev.device;
+	resource_size_t bar_len;
+	int ret;
+
+	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x1000, 0, false,
+			      &bar_vm->inst);
+	if (ret)
+		return ret;
+
+	bar_len = device->func->resource_size(device, bar_nr);
+	if (!bar_len)
+		return -ENOMEM;
+	if (bar_nr == 3 && bar->bar2_halve)
+		bar_len >>= 1;
+
+	ret = nvkm_vmm_new(device, 0, bar_len, NULL, 0, key,
+			   (bar_nr == 3) ? "bar2" : "bar1", &bar_vm->vmm);
+	if (ret)
+		return ret;
+
+	atomic_inc(&bar_vm->vmm->engref[NVKM_SUBDEV_BAR]);
+	bar_vm->vmm->debug = bar->base.subdev.debug;
+
+	/*
+	 * Bootstrap page table lookup.
+	 */
+	if (bar_nr == 3) {
+		ret = nvkm_vmm_boot(bar_vm->vmm);
+		if (ret)
+			return ret;
+	}
+
+	return nvkm_vmm_join(bar_vm->vmm, bar_vm->inst);
+}
+
+int
+gf100_bar_oneinit(struct nvkm_bar *base)
+{
+	static struct lock_class_key bar1_lock;
+	static struct lock_class_key bar2_lock;
+	struct gf100_bar *bar = gf100_bar(base);
+	int ret;
+
+	/* BAR2 */
+	if (bar->base.func->bar2.init) {
+		ret = gf100_bar_oneinit_bar(bar, &bar->bar[0], &bar2_lock, 3);
+		if (ret)
+			return ret;
+
+		bar->base.subdev.oneinit = true;
+		nvkm_bar_bar2_init(bar->base.subdev.device);
+	}
+
+	/* BAR1 */
+	ret = gf100_bar_oneinit_bar(bar, &bar->bar[1], &bar1_lock, 1);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+void *
+gf100_bar_dtor(struct nvkm_bar *base)
+{
+	struct gf100_bar *bar = gf100_bar(base);
+
+	nvkm_vmm_part(bar->bar[1].vmm, bar->bar[1].inst);
+	nvkm_vmm_unref(&bar->bar[1].vmm);
+	nvkm_memory_unref(&bar->bar[1].inst);
+
+	nvkm_vmm_part(bar->bar[0].vmm, bar->bar[0].inst);
+	nvkm_vmm_unref(&bar->bar[0].vmm);
+	nvkm_memory_unref(&bar->bar[0].inst);
+	return bar;
+}
+
+int
+gf100_bar_new_(const struct nvkm_bar_func *func, struct nvkm_device *device,
+	       enum nvkm_subdev_type type, int inst, struct nvkm_bar **pbar)
+{
+	struct gf100_bar *bar;
+	if (!(bar = kzalloc(sizeof(*bar), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_bar_ctor(func, device, type, inst, &bar->base);
+	bar->bar2_halve = nvkm_boolopt(device->cfgopt, "NvBar2Halve", false);
+	*pbar = &bar->base;
+	return 0;
+}
+
+static const struct nvkm_bar_func
+gf100_bar_func = {
+	.dtor = gf100_bar_dtor,
+	.oneinit = gf100_bar_oneinit,
+	.bar1.init = gf100_bar_bar1_init,
+	.bar1.fini = gf100_bar_bar1_fini,
+	.bar1.wait = gf100_bar_bar1_wait,
+	.bar1.vmm = gf100_bar_bar1_vmm,
+	.bar2.init = gf100_bar_bar2_init,
+	.bar2.fini = gf100_bar_bar2_fini,
+	.bar2.wait = gf100_bar_bar1_wait,
+	.bar2.vmm = gf100_bar_bar2_vmm,
+	.flush = g84_bar_flush,
+};
+
+int
+gf100_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	      struct nvkm_bar **pbar)
+{
+	return gf100_bar_new_(&gf100_bar_func, device, type, inst, pbar);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.h b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.h
new file mode 100644
index 000000000..328a68b41
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __GF100_BAR_H__
+#define __GF100_BAR_H__
+#define gf100_bar(p) container_of((p), struct gf100_bar, base)
+#include "priv.h"
+
+struct gf100_barN {
+	struct nvkm_memory *inst;
+	struct nvkm_vmm *vmm;
+};
+
+struct gf100_bar {
+	struct nvkm_bar base;
+	bool bar2_halve;
+	struct gf100_barN bar[2];
+};
+
+int gf100_bar_new_(const struct nvkm_bar_func *, struct nvkm_device *, enum nvkm_subdev_type,
+		   int, struct nvkm_bar **);
+void *gf100_bar_dtor(struct nvkm_bar *);
+int gf100_bar_oneinit(struct nvkm_bar *);
+void gf100_bar_bar1_init(struct nvkm_bar *);
+void gf100_bar_bar1_wait(struct nvkm_bar *);
+struct nvkm_vmm *gf100_bar_bar1_vmm(struct nvkm_bar *);
+void gf100_bar_bar2_init(struct nvkm_bar *);
+struct nvkm_vmm *gf100_bar_bar2_vmm(struct nvkm_bar *);
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gk20a.c
new file mode 100644
index 000000000..eead8ab88
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gk20a.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+#include "gf100.h"
+
+static const struct nvkm_bar_func
+gk20a_bar_func = {
+	.dtor = gf100_bar_dtor,
+	.oneinit = gf100_bar_oneinit,
+	.bar1.init = gf100_bar_bar1_init,
+	.bar1.wait = gf100_bar_bar1_wait,
+	.bar1.vmm = gf100_bar_bar1_vmm,
+	.flush = g84_bar_flush,
+};
+
+int
+gk20a_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	      struct nvkm_bar **pbar)
+{
+	int ret = gf100_bar_new_(&gk20a_bar_func, device, type, inst, pbar);
+	if (ret == 0)
+		(*pbar)->iomap_uncached = true;
+	return ret;
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gm107.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gm107.c
new file mode 100644
index 000000000..da95307a7
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gm107.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2017 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.
+ */
+#include "gf100.h"
+
+#include <subdev/timer.h>
+
+void
+gm107_bar_bar1_wait(struct nvkm_bar *bar)
+{
+	struct nvkm_device *device = bar->subdev.device;
+	nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x001710) & 0x00000003))
+			break;
+	);
+}
+
+static void
+gm107_bar_bar2_wait(struct nvkm_bar *bar)
+{
+	struct nvkm_device *device = bar->subdev.device;
+	nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x001710) & 0x0000000c))
+			break;
+	);
+}
+
+static const struct nvkm_bar_func
+gm107_bar_func = {
+	.dtor = gf100_bar_dtor,
+	.oneinit = gf100_bar_oneinit,
+	.bar1.init = gf100_bar_bar1_init,
+	.bar1.fini = gf100_bar_bar1_fini,
+	.bar1.wait = gm107_bar_bar1_wait,
+	.bar1.vmm = gf100_bar_bar1_vmm,
+	.bar2.init = gf100_bar_bar2_init,
+	.bar2.fini = gf100_bar_bar2_fini,
+	.bar2.wait = gm107_bar_bar2_wait,
+	.bar2.vmm = gf100_bar_bar2_vmm,
+	.flush = g84_bar_flush,
+};
+
+int
+gm107_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	      struct nvkm_bar **pbar)
+{
+	return gf100_bar_new_(&gm107_bar_func, device, type, inst, pbar);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gm20b.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gm20b.c
new file mode 100644
index 000000000..4acdb4fb0
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gm20b.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2017 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.
+ */
+#include "gf100.h"
+
+static const struct nvkm_bar_func
+gm20b_bar_func = {
+	.dtor = gf100_bar_dtor,
+	.oneinit = gf100_bar_oneinit,
+	.bar1.init = gf100_bar_bar1_init,
+	.bar1.wait = gm107_bar_bar1_wait,
+	.bar1.vmm = gf100_bar_bar1_vmm,
+	.flush = g84_bar_flush,
+};
+
+int
+gm20b_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	      struct nvkm_bar **pbar)
+{
+	int ret = gf100_bar_new_(&gm20b_bar_func, device, type, inst, pbar);
+	if (ret == 0)
+		(*pbar)->iomap_uncached = true;
+	return ret;
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c
new file mode 100644
index 000000000..27d8a1be4
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c
@@ -0,0 +1,255 @@
+/*
+ * 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
+ */
+#include "nv50.h"
+
+#include <core/gpuobj.h>
+#include <subdev/fb.h>
+#include <subdev/mmu.h>
+#include <subdev/timer.h>
+
+static void
+nv50_bar_flush(struct nvkm_bar *base)
+{
+	struct nv50_bar *bar = nv50_bar(base);
+	struct nvkm_device *device = bar->base.subdev.device;
+	unsigned long flags;
+	spin_lock_irqsave(&bar->base.lock, flags);
+	nvkm_wr32(device, 0x00330c, 0x00000001);
+	nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x00330c) & 0x00000002))
+			break;
+	);
+	spin_unlock_irqrestore(&bar->base.lock, flags);
+}
+
+struct nvkm_vmm *
+nv50_bar_bar1_vmm(struct nvkm_bar *base)
+{
+	return nv50_bar(base)->bar1_vmm;
+}
+
+void
+nv50_bar_bar1_wait(struct nvkm_bar *base)
+{
+	nvkm_bar_flush(base);
+}
+
+void
+nv50_bar_bar1_fini(struct nvkm_bar *bar)
+{
+	nvkm_wr32(bar->subdev.device, 0x001708, 0x00000000);
+}
+
+void
+nv50_bar_bar1_init(struct nvkm_bar *base)
+{
+	struct nvkm_device *device = base->subdev.device;
+	struct nv50_bar *bar = nv50_bar(base);
+	nvkm_wr32(device, 0x001708, 0x80000000 | bar->bar1->node->offset >> 4);
+}
+
+struct nvkm_vmm *
+nv50_bar_bar2_vmm(struct nvkm_bar *base)
+{
+	return nv50_bar(base)->bar2_vmm;
+}
+
+void
+nv50_bar_bar2_fini(struct nvkm_bar *bar)
+{
+	nvkm_wr32(bar->subdev.device, 0x00170c, 0x00000000);
+}
+
+void
+nv50_bar_bar2_init(struct nvkm_bar *base)
+{
+	struct nvkm_device *device = base->subdev.device;
+	struct nv50_bar *bar = nv50_bar(base);
+	nvkm_wr32(device, 0x001704, 0x00000000 | bar->mem->addr >> 12);
+	nvkm_wr32(device, 0x001704, 0x40000000 | bar->mem->addr >> 12);
+	nvkm_wr32(device, 0x00170c, 0x80000000 | bar->bar2->node->offset >> 4);
+}
+
+void
+nv50_bar_init(struct nvkm_bar *base)
+{
+	struct nv50_bar *bar = nv50_bar(base);
+	struct nvkm_device *device = bar->base.subdev.device;
+	int i;
+
+	for (i = 0; i < 8; i++)
+		nvkm_wr32(device, 0x001900 + (i * 4), 0x00000000);
+}
+
+int
+nv50_bar_oneinit(struct nvkm_bar *base)
+{
+	struct nv50_bar *bar = nv50_bar(base);
+	struct nvkm_device *device = bar->base.subdev.device;
+	static struct lock_class_key bar1_lock;
+	static struct lock_class_key bar2_lock;
+	u64 start, limit, size;
+	int ret;
+
+	ret = nvkm_gpuobj_new(device, 0x20000, 0, false, NULL, &bar->mem);
+	if (ret)
+		return ret;
+
+	ret = nvkm_gpuobj_new(device, bar->pgd_addr, 0, false, bar->mem,
+			      &bar->pad);
+	if (ret)
+		return ret;
+
+	ret = nvkm_gpuobj_new(device, 0x4000, 0, false, bar->mem, &bar->pgd);
+	if (ret)
+		return ret;
+
+	/* BAR2 */
+	start = 0x0100000000ULL;
+	size = device->func->resource_size(device, 3);
+	if (!size)
+		return -ENOMEM;
+	limit = start + size;
+
+	ret = nvkm_vmm_new(device, start, limit-- - start, NULL, 0,
+			   &bar2_lock, "bar2", &bar->bar2_vmm);
+	if (ret)
+		return ret;
+
+	atomic_inc(&bar->bar2_vmm->engref[NVKM_SUBDEV_BAR]);
+	bar->bar2_vmm->debug = bar->base.subdev.debug;
+
+	ret = nvkm_vmm_boot(bar->bar2_vmm);
+	if (ret)
+		return ret;
+
+	ret = nvkm_vmm_join(bar->bar2_vmm, bar->mem->memory);
+	if (ret)
+		return ret;
+
+	ret = nvkm_gpuobj_new(device, 24, 16, false, bar->mem, &bar->bar2);
+	if (ret)
+		return ret;
+
+	nvkm_kmap(bar->bar2);
+	nvkm_wo32(bar->bar2, 0x00, 0x7fc00000);
+	nvkm_wo32(bar->bar2, 0x04, lower_32_bits(limit));
+	nvkm_wo32(bar->bar2, 0x08, lower_32_bits(start));
+	nvkm_wo32(bar->bar2, 0x0c, upper_32_bits(limit) << 24 |
+				   upper_32_bits(start));
+	nvkm_wo32(bar->bar2, 0x10, 0x00000000);
+	nvkm_wo32(bar->bar2, 0x14, 0x00000000);
+	nvkm_done(bar->bar2);
+
+	bar->base.subdev.oneinit = true;
+	nvkm_bar_bar2_init(device);
+
+	/* BAR1 */
+	start = 0x0000000000ULL;
+	size = device->func->resource_size(device, 1);
+	if (!size)
+		return -ENOMEM;
+	limit = start + size;
+
+	ret = nvkm_vmm_new(device, start, limit-- - start, NULL, 0,
+			   &bar1_lock, "bar1", &bar->bar1_vmm);
+	if (ret)
+		return ret;
+
+	atomic_inc(&bar->bar1_vmm->engref[NVKM_SUBDEV_BAR]);
+	bar->bar1_vmm->debug = bar->base.subdev.debug;
+
+	ret = nvkm_vmm_join(bar->bar1_vmm, bar->mem->memory);
+	if (ret)
+		return ret;
+
+	ret = nvkm_gpuobj_new(device, 24, 16, false, bar->mem, &bar->bar1);
+	if (ret)
+		return ret;
+
+	nvkm_kmap(bar->bar1);
+	nvkm_wo32(bar->bar1, 0x00, 0x7fc00000);
+	nvkm_wo32(bar->bar1, 0x04, lower_32_bits(limit));
+	nvkm_wo32(bar->bar1, 0x08, lower_32_bits(start));
+	nvkm_wo32(bar->bar1, 0x0c, upper_32_bits(limit) << 24 |
+				   upper_32_bits(start));
+	nvkm_wo32(bar->bar1, 0x10, 0x00000000);
+	nvkm_wo32(bar->bar1, 0x14, 0x00000000);
+	nvkm_done(bar->bar1);
+	return 0;
+}
+
+void *
+nv50_bar_dtor(struct nvkm_bar *base)
+{
+	struct nv50_bar *bar = nv50_bar(base);
+	if (bar->mem) {
+		nvkm_gpuobj_del(&bar->bar1);
+		nvkm_vmm_part(bar->bar1_vmm, bar->mem->memory);
+		nvkm_vmm_unref(&bar->bar1_vmm);
+		nvkm_gpuobj_del(&bar->bar2);
+		nvkm_vmm_part(bar->bar2_vmm, bar->mem->memory);
+		nvkm_vmm_unref(&bar->bar2_vmm);
+		nvkm_gpuobj_del(&bar->pgd);
+		nvkm_gpuobj_del(&bar->pad);
+		nvkm_gpuobj_del(&bar->mem);
+	}
+	return bar;
+}
+
+int
+nv50_bar_new_(const struct nvkm_bar_func *func, struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, u32 pgd_addr, struct nvkm_bar **pbar)
+{
+	struct nv50_bar *bar;
+	if (!(bar = kzalloc(sizeof(*bar), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_bar_ctor(func, device, type, inst, &bar->base);
+	bar->pgd_addr = pgd_addr;
+	*pbar = &bar->base;
+	return 0;
+}
+
+static const struct nvkm_bar_func
+nv50_bar_func = {
+	.dtor = nv50_bar_dtor,
+	.oneinit = nv50_bar_oneinit,
+	.init = nv50_bar_init,
+	.bar1.init = nv50_bar_bar1_init,
+	.bar1.fini = nv50_bar_bar1_fini,
+	.bar1.wait = nv50_bar_bar1_wait,
+	.bar1.vmm = nv50_bar_bar1_vmm,
+	.bar2.init = nv50_bar_bar2_init,
+	.bar2.fini = nv50_bar_bar2_fini,
+	.bar2.wait = nv50_bar_bar1_wait,
+	.bar2.vmm = nv50_bar_bar2_vmm,
+	.flush = nv50_bar_flush,
+};
+
+int
+nv50_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	     struct nvkm_bar **pbar)
+{
+	return nv50_bar_new_(&nv50_bar_func, device, type, inst, 0x1400, pbar);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.h b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.h
new file mode 100644
index 000000000..dedee9394
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NV50_BAR_H__
+#define __NV50_BAR_H__
+#define nv50_bar(p) container_of((p), struct nv50_bar, base)
+#include "priv.h"
+
+struct nv50_bar {
+	struct nvkm_bar base;
+	u32 pgd_addr;
+	struct nvkm_gpuobj *mem;
+	struct nvkm_gpuobj *pad;
+	struct nvkm_gpuobj *pgd;
+	struct nvkm_vmm *bar1_vmm;
+	struct nvkm_gpuobj *bar1;
+	struct nvkm_vmm *bar2_vmm;
+	struct nvkm_gpuobj *bar2;
+};
+
+int nv50_bar_new_(const struct nvkm_bar_func *, struct nvkm_device *, enum nvkm_subdev_type,
+		  int, u32 pgd_addr, struct nvkm_bar **);
+void *nv50_bar_dtor(struct nvkm_bar *);
+int nv50_bar_oneinit(struct nvkm_bar *);
+void nv50_bar_init(struct nvkm_bar *);
+void nv50_bar_bar1_init(struct nvkm_bar *);
+void nv50_bar_bar1_wait(struct nvkm_bar *);
+struct nvkm_vmm *nv50_bar_bar1_vmm(struct nvkm_bar *);
+void nv50_bar_bar2_init(struct nvkm_bar *);
+struct nvkm_vmm *nv50_bar_bar2_vmm(struct nvkm_bar *);
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/priv.h
new file mode 100644
index 000000000..daebfc991
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/priv.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_BAR_PRIV_H__
+#define __NVKM_BAR_PRIV_H__
+#define nvkm_bar(p) container_of((p), struct nvkm_bar, subdev)
+#include <subdev/bar.h>
+
+void nvkm_bar_ctor(const struct nvkm_bar_func *, struct nvkm_device *,
+		   enum nvkm_subdev_type, int, struct nvkm_bar *);
+
+struct nvkm_bar_func {
+	void *(*dtor)(struct nvkm_bar *);
+	int (*oneinit)(struct nvkm_bar *);
+	void (*init)(struct nvkm_bar *);
+
+	struct {
+		void (*init)(struct nvkm_bar *);
+		void (*fini)(struct nvkm_bar *);
+		void (*wait)(struct nvkm_bar *);
+		struct nvkm_vmm *(*vmm)(struct nvkm_bar *);
+	} bar1, bar2;
+
+	void (*flush)(struct nvkm_bar *);
+};
+
+void nv50_bar_bar1_fini(struct nvkm_bar *);
+void nv50_bar_bar2_fini(struct nvkm_bar *);
+
+void g84_bar_flush(struct nvkm_bar *);
+
+void gf100_bar_bar1_fini(struct nvkm_bar *);
+void gf100_bar_bar2_fini(struct nvkm_bar *);
+
+void gm107_bar_bar1_wait(struct nvkm_bar *);
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/tu102.c
new file mode 100644
index 000000000..c25ab407b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/tu102.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2018 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.
+ */
+#include "gf100.h"
+
+#include <core/memory.h>
+#include <subdev/timer.h>
+
+static void
+tu102_bar_bar2_wait(struct nvkm_bar *bar)
+{
+	struct nvkm_device *device = bar->subdev.device;
+	nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0xb80f50) & 0x0000000c))
+			break;
+	);
+}
+
+static void
+tu102_bar_bar2_fini(struct nvkm_bar *bar)
+{
+	nvkm_mask(bar->subdev.device, 0xb80f48, 0x80000000, 0x00000000);
+}
+
+static void
+tu102_bar_bar2_init(struct nvkm_bar *base)
+{
+	struct nvkm_device *device = base->subdev.device;
+	struct gf100_bar *bar = gf100_bar(base);
+	u32 addr = nvkm_memory_addr(bar->bar[0].inst) >> 12;
+	if (bar->bar2_halve)
+		addr |= 0x40000000;
+	nvkm_wr32(device, 0xb80f48, 0x80000000 | addr);
+}
+
+static void
+tu102_bar_bar1_wait(struct nvkm_bar *bar)
+{
+	struct nvkm_device *device = bar->subdev.device;
+	nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0xb80f50) & 0x00000003))
+			break;
+	);
+}
+
+static void
+tu102_bar_bar1_fini(struct nvkm_bar *bar)
+{
+	nvkm_mask(bar->subdev.device, 0xb80f40, 0x80000000, 0x00000000);
+}
+
+static void
+tu102_bar_bar1_init(struct nvkm_bar *base)
+{
+	struct nvkm_device *device = base->subdev.device;
+	struct gf100_bar *bar = gf100_bar(base);
+	const u32 addr = nvkm_memory_addr(bar->bar[1].inst) >> 12;
+	nvkm_wr32(device, 0xb80f40, 0x80000000 | addr);
+}
+
+static const struct nvkm_bar_func
+tu102_bar = {
+	.dtor = gf100_bar_dtor,
+	.oneinit = gf100_bar_oneinit,
+	.bar1.init = tu102_bar_bar1_init,
+	.bar1.fini = tu102_bar_bar1_fini,
+	.bar1.wait = tu102_bar_bar1_wait,
+	.bar1.vmm = gf100_bar_bar1_vmm,
+	.bar2.init = tu102_bar_bar2_init,
+	.bar2.fini = tu102_bar_bar2_fini,
+	.bar2.wait = tu102_bar_bar2_wait,
+	.bar2.vmm = gf100_bar_bar2_vmm,
+	.flush = g84_bar_flush,
+};
+
+int
+tu102_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	      struct nvkm_bar **pbar)
+{
+	return gf100_bar_new_(&tu102_bar, device, type, inst, pbar);
+}