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, 367 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
new file mode 100644
index 000000000..1469a8891
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -0,0 +1,367 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA,
+ * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA,
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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 <linux/limits.h>
+#include <linux/swiotlb.h>
+
+#include <drm/ttm/ttm_range_manager.h>
+
+#include "nouveau_drv.h"
+#include "nouveau_gem.h"
+#include "nouveau_mem.h"
+#include "nouveau_ttm.h"
+
+#include <core/tegra.h>
+
+static void
+nouveau_manager_del(struct ttm_resource_manager *man,
+		    struct ttm_resource *reg)
+{
+	nouveau_mem_del(man, reg);
+}
+
+static bool
+nouveau_manager_intersects(struct ttm_resource_manager *man,
+			   struct ttm_resource *res,
+			   const struct ttm_place *place,
+			   size_t size)
+{
+	return nouveau_mem_intersects(res, place, size);
+}
+
+static bool
+nouveau_manager_compatible(struct ttm_resource_manager *man,
+			   struct ttm_resource *res,
+			   const struct ttm_place *place,
+			   size_t size)
+{
+	return nouveau_mem_compatible(res, place, size);
+}
+
+static int
+nouveau_vram_manager_new(struct ttm_resource_manager *man,
+			 struct ttm_buffer_object *bo,
+			 const struct ttm_place *place,
+			 struct ttm_resource **res)
+{
+	struct nouveau_bo *nvbo = nouveau_bo(bo);
+	struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
+	int ret;
+
+	if (drm->client.device.info.ram_size == 0)
+		return -ENOMEM;
+
+	ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
+	if (ret)
+		return ret;
+
+	ttm_resource_init(bo, place, *res);
+
+	ret = nouveau_mem_vram(*res, nvbo->contig, nvbo->page);
+	if (ret) {
+		nouveau_mem_del(man, *res);
+		return ret;
+	}
+
+	return 0;
+}
+
+const struct ttm_resource_manager_func nouveau_vram_manager = {
+	.alloc = nouveau_vram_manager_new,
+	.free = nouveau_manager_del,
+	.intersects = nouveau_manager_intersects,
+	.compatible = nouveau_manager_compatible,
+};
+
+static int
+nouveau_gart_manager_new(struct ttm_resource_manager *man,
+			 struct ttm_buffer_object *bo,
+			 const struct ttm_place *place,
+			 struct ttm_resource **res)
+{
+	struct nouveau_bo *nvbo = nouveau_bo(bo);
+	struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
+	int ret;
+
+	ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
+	if (ret)
+		return ret;
+
+	ttm_resource_init(bo, place, *res);
+	(*res)->start = 0;
+	return 0;
+}
+
+const struct ttm_resource_manager_func nouveau_gart_manager = {
+	.alloc = nouveau_gart_manager_new,
+	.free = nouveau_manager_del,
+	.intersects = nouveau_manager_intersects,
+	.compatible = nouveau_manager_compatible,
+};
+
+static int
+nv04_gart_manager_new(struct ttm_resource_manager *man,
+		      struct ttm_buffer_object *bo,
+		      const struct ttm_place *place,
+		      struct ttm_resource **res)
+{
+	struct nouveau_bo *nvbo = nouveau_bo(bo);
+	struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
+	struct nouveau_mem *mem;
+	int ret;
+
+	ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
+	if (ret)
+		return ret;
+
+	mem = nouveau_mem(*res);
+	ttm_resource_init(bo, place, *res);
+	ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
+			   (long)(*res)->size, &mem->vma[0]);
+	if (ret) {
+		nouveau_mem_del(man, *res);
+		return ret;
+	}
+
+	(*res)->start = mem->vma[0].addr >> PAGE_SHIFT;
+	return 0;
+}
+
+const struct ttm_resource_manager_func nv04_gart_manager = {
+	.alloc = nv04_gart_manager_new,
+	.free = nouveau_manager_del,
+	.intersects = nouveau_manager_intersects,
+	.compatible = nouveau_manager_compatible,
+};
+
+static int
+nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
+{
+	struct nvif_mmu *mmu = &drm->client.mmu;
+	int typei;
+
+	typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
+					    kind | NVIF_MEM_COHERENT);
+	if (typei < 0)
+		return -ENOSYS;
+
+	drm->ttm.type_host[!!kind] = typei;
+
+	typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
+	if (typei < 0)
+		return -ENOSYS;
+
+	drm->ttm.type_ncoh[!!kind] = typei;
+	return 0;
+}
+
+static int
+nouveau_ttm_init_vram(struct nouveau_drm *drm)
+{
+	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
+		struct ttm_resource_manager *man = kzalloc(sizeof(*man), GFP_KERNEL);
+
+		if (!man)
+			return -ENOMEM;
+
+		man->func = &nouveau_vram_manager;
+
+		ttm_resource_manager_init(man, &drm->ttm.bdev,
+					  drm->gem.vram_available >> PAGE_SHIFT);
+		ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, man);
+		ttm_resource_manager_set_used(man, true);
+		return 0;
+	} else {
+		return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_VRAM, false,
+					  drm->gem.vram_available >> PAGE_SHIFT);
+	}
+}
+
+static void
+nouveau_ttm_fini_vram(struct nouveau_drm *drm)
+{
+	struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM);
+
+	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
+		ttm_resource_manager_set_used(man, false);
+		ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
+		ttm_resource_manager_cleanup(man);
+		ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, NULL);
+		kfree(man);
+	} else
+		ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_VRAM);
+}
+
+static int
+nouveau_ttm_init_gtt(struct nouveau_drm *drm)
+{
+	struct ttm_resource_manager *man;
+	unsigned long size_pages = drm->gem.gart_available >> PAGE_SHIFT;
+	const struct ttm_resource_manager_func *func = NULL;
+
+	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
+		func = &nouveau_gart_manager;
+	else if (!drm->agp.bridge)
+		func = &nv04_gart_manager;
+	else
+		return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_TT, true,
+					  size_pages);
+
+	man = kzalloc(sizeof(*man), GFP_KERNEL);
+	if (!man)
+		return -ENOMEM;
+
+	man->func = func;
+	man->use_tt = true;
+	ttm_resource_manager_init(man, &drm->ttm.bdev, size_pages);
+	ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, man);
+	ttm_resource_manager_set_used(man, true);
+	return 0;
+}
+
+static void
+nouveau_ttm_fini_gtt(struct nouveau_drm *drm)
+{
+	struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_TT);
+
+	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
+	    drm->agp.bridge)
+		ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_TT);
+	else {
+		ttm_resource_manager_set_used(man, false);
+		ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
+		ttm_resource_manager_cleanup(man);
+		ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, NULL);
+		kfree(man);
+	}
+}
+
+int
+nouveau_ttm_init(struct nouveau_drm *drm)
+{
+	struct nvkm_device *device = nvxx_device(&drm->client.device);
+	struct nvkm_pci *pci = device->pci;
+	struct nvif_mmu *mmu = &drm->client.mmu;
+	struct drm_device *dev = drm->dev;
+	bool need_swiotlb = false;
+	int typei, ret;
+
+	ret = nouveau_ttm_init_host(drm, 0);
+	if (ret)
+		return ret;
+
+	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
+	    drm->client.device.info.chipset != 0x50) {
+		ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
+		if (ret)
+			return ret;
+	}
+
+	if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
+	    drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
+		typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
+					   NVIF_MEM_KIND |
+					   NVIF_MEM_COMP |
+					   NVIF_MEM_DISP);
+		if (typei < 0)
+			return -ENOSYS;
+
+		drm->ttm.type_vram = typei;
+	} else {
+		drm->ttm.type_vram = -1;
+	}
+
+	if (pci && pci->agp.bridge) {
+		drm->agp.bridge = pci->agp.bridge;
+		drm->agp.base = pci->agp.base;
+		drm->agp.size = pci->agp.size;
+		drm->agp.cma = pci->agp.cma;
+	}
+
+#if IS_ENABLED(CONFIG_SWIOTLB) && IS_ENABLED(CONFIG_X86)
+	need_swiotlb = is_swiotlb_active(dev->dev);
+#endif
+
+	ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev,
+				  dev->anon_inode->i_mapping,
+				  dev->vma_offset_manager, need_swiotlb,
+				  drm->client.mmu.dmabits <= 32);
+	if (ret) {
+		NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
+		return ret;
+	}
+
+	/* VRAM init */
+	drm->gem.vram_available = drm->client.device.info.ram_user;
+
+	arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
+				   device->func->resource_size(device, 1));
+
+	ret = nouveau_ttm_init_vram(drm);
+	if (ret) {
+		NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
+		return ret;
+	}
+
+	drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
+					 device->func->resource_size(device, 1));
+
+	/* GART init */
+	if (!drm->agp.bridge) {
+		drm->gem.gart_available = drm->client.vmm.vmm.limit;
+	} else {
+		drm->gem.gart_available = drm->agp.size;
+	}
+
+	ret = nouveau_ttm_init_gtt(drm);
+	if (ret) {
+		NV_ERROR(drm, "GART mm init failed, %d\n", ret);
+		return ret;
+	}
+
+	mutex_init(&drm->ttm.io_reserve_mutex);
+	INIT_LIST_HEAD(&drm->ttm.io_reserve_lru);
+
+	NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
+	NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
+	return 0;
+}
+
+void
+nouveau_ttm_fini(struct nouveau_drm *drm)
+{
+	struct nvkm_device *device = nvxx_device(&drm->client.device);
+
+	nouveau_ttm_fini_vram(drm);
+	nouveau_ttm_fini_gtt(drm);
+
+	ttm_device_fini(&drm->ttm.bdev);
+
+	arch_phys_wc_del(drm->ttm.mtrr);
+	drm->ttm.mtrr = 0;
+	arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
+				device->func->resource_size(device, 1));
+
+}