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, 431 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
new file mode 100644
index 000000000..97c05d08a
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
@@ -0,0 +1,431 @@
+/*
+ * Copyright 2019 Advanced Micro Devices, 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.
+ *
+ */
+
+#ifndef __AMDGPU_MES_H__
+#define __AMDGPU_MES_H__
+
+#include "amdgpu_irq.h"
+#include "kgd_kfd_interface.h"
+#include "amdgpu_gfx.h"
+#include <linux/sched/mm.h>
+
+#define AMDGPU_MES_MAX_COMPUTE_PIPES        8
+#define AMDGPU_MES_MAX_GFX_PIPES            2
+#define AMDGPU_MES_MAX_SDMA_PIPES           2
+
+#define AMDGPU_MES_API_VERSION_SHIFT	12
+#define AMDGPU_MES_FEAT_VERSION_SHIFT	24
+
+#define AMDGPU_MES_VERSION_MASK		0x00000fff
+#define AMDGPU_MES_API_VERSION_MASK	0x00fff000
+#define AMDGPU_MES_FEAT_VERSION_MASK	0xff000000
+
+enum amdgpu_mes_priority_level {
+	AMDGPU_MES_PRIORITY_LEVEL_LOW       = 0,
+	AMDGPU_MES_PRIORITY_LEVEL_NORMAL    = 1,
+	AMDGPU_MES_PRIORITY_LEVEL_MEDIUM    = 2,
+	AMDGPU_MES_PRIORITY_LEVEL_HIGH      = 3,
+	AMDGPU_MES_PRIORITY_LEVEL_REALTIME  = 4,
+	AMDGPU_MES_PRIORITY_NUM_LEVELS
+};
+
+#define AMDGPU_MES_PROC_CTX_SIZE 0x1000 /* one page area */
+#define AMDGPU_MES_GANG_CTX_SIZE 0x1000 /* one page area */
+
+struct amdgpu_mes_funcs;
+
+enum admgpu_mes_pipe {
+	AMDGPU_MES_SCHED_PIPE = 0,
+	AMDGPU_MES_KIQ_PIPE,
+	AMDGPU_MAX_MES_PIPES = 2,
+};
+
+struct amdgpu_mes {
+	struct amdgpu_device            *adev;
+
+	struct mutex                    mutex_hidden;
+
+	struct idr                      pasid_idr;
+	struct idr                      gang_id_idr;
+	struct idr                      queue_id_idr;
+	struct ida                      doorbell_ida;
+
+	spinlock_t                      queue_id_lock;
+
+	uint32_t			sched_version;
+	uint32_t			kiq_version;
+
+	uint32_t                        total_max_queue;
+	uint32_t                        doorbell_id_offset;
+	uint32_t                        max_doorbell_slices;
+
+	uint64_t                        default_process_quantum;
+	uint64_t                        default_gang_quantum;
+
+	struct amdgpu_ring              ring;
+	spinlock_t                      ring_lock;
+
+	const struct firmware           *fw[AMDGPU_MAX_MES_PIPES];
+
+	/* mes ucode */
+	struct amdgpu_bo		*ucode_fw_obj[AMDGPU_MAX_MES_PIPES];
+	uint64_t			ucode_fw_gpu_addr[AMDGPU_MAX_MES_PIPES];
+	uint32_t			*ucode_fw_ptr[AMDGPU_MAX_MES_PIPES];
+	uint64_t                        uc_start_addr[AMDGPU_MAX_MES_PIPES];
+
+	/* mes ucode data */
+	struct amdgpu_bo		*data_fw_obj[AMDGPU_MAX_MES_PIPES];
+	uint64_t			data_fw_gpu_addr[AMDGPU_MAX_MES_PIPES];
+	uint32_t			*data_fw_ptr[AMDGPU_MAX_MES_PIPES];
+	uint64_t                        data_start_addr[AMDGPU_MAX_MES_PIPES];
+
+	/* eop gpu obj */
+	struct amdgpu_bo		*eop_gpu_obj[AMDGPU_MAX_MES_PIPES];
+	uint64_t                        eop_gpu_addr[AMDGPU_MAX_MES_PIPES];
+
+	void                            *mqd_backup[AMDGPU_MAX_MES_PIPES];
+	struct amdgpu_irq_src	        irq[AMDGPU_MAX_MES_PIPES];
+
+	uint32_t                        vmid_mask_gfxhub;
+	uint32_t                        vmid_mask_mmhub;
+	uint32_t                        compute_hqd_mask[AMDGPU_MES_MAX_COMPUTE_PIPES];
+	uint32_t                        gfx_hqd_mask[AMDGPU_MES_MAX_GFX_PIPES];
+	uint32_t                        sdma_hqd_mask[AMDGPU_MES_MAX_SDMA_PIPES];
+	uint32_t                        aggregated_doorbells[AMDGPU_MES_PRIORITY_NUM_LEVELS];
+	uint32_t                        sch_ctx_offs;
+	uint64_t			sch_ctx_gpu_addr;
+	uint64_t			*sch_ctx_ptr;
+	uint32_t			query_status_fence_offs;
+	uint64_t			query_status_fence_gpu_addr;
+	uint64_t			*query_status_fence_ptr;
+	uint32_t                        read_val_offs;
+	uint64_t			read_val_gpu_addr;
+	uint32_t			*read_val_ptr;
+
+	uint32_t			saved_flags;
+
+	/* initialize kiq pipe */
+	int                             (*kiq_hw_init)(struct amdgpu_device *adev);
+	int                             (*kiq_hw_fini)(struct amdgpu_device *adev);
+
+	/* ip specific functions */
+	const struct amdgpu_mes_funcs   *funcs;
+};
+
+struct amdgpu_mes_process {
+	int			pasid;
+	struct			amdgpu_vm *vm;
+	uint64_t		pd_gpu_addr;
+	struct amdgpu_bo 	*proc_ctx_bo;
+	uint64_t 		proc_ctx_gpu_addr;
+	void 			*proc_ctx_cpu_ptr;
+	uint64_t 		process_quantum;
+	struct 			list_head gang_list;
+	uint32_t 		doorbell_index;
+	unsigned long 		*doorbell_bitmap;
+	struct mutex		doorbell_lock;
+};
+
+struct amdgpu_mes_gang {
+	int 				gang_id;
+	int 				priority;
+	int 				inprocess_gang_priority;
+	int 				global_priority_level;
+	struct list_head 		list;
+	struct amdgpu_mes_process 	*process;
+	struct amdgpu_bo 		*gang_ctx_bo;
+	uint64_t 			gang_ctx_gpu_addr;
+	void 				*gang_ctx_cpu_ptr;
+	uint64_t 			gang_quantum;
+	struct list_head 		queue_list;
+};
+
+struct amdgpu_mes_queue {
+	struct list_head 		list;
+	struct amdgpu_mes_gang 		*gang;
+	int 				queue_id;
+	uint64_t 			doorbell_off;
+	struct amdgpu_bo		*mqd_obj;
+	void				*mqd_cpu_ptr;
+	uint64_t 			mqd_gpu_addr;
+	uint64_t 			wptr_gpu_addr;
+	int 				queue_type;
+	int 				paging;
+	struct amdgpu_ring 		*ring;
+};
+
+struct amdgpu_mes_queue_properties {
+	int 			queue_type;
+	uint64_t                hqd_base_gpu_addr;
+	uint64_t                rptr_gpu_addr;
+	uint64_t                wptr_gpu_addr;
+	uint64_t                wptr_mc_addr;
+	uint32_t                queue_size;
+	uint64_t                eop_gpu_addr;
+	uint32_t                hqd_pipe_priority;
+	uint32_t                hqd_queue_priority;
+	bool 			paging;
+	struct amdgpu_ring 	*ring;
+	/* out */
+	uint64_t       		doorbell_off;
+};
+
+struct amdgpu_mes_gang_properties {
+	uint32_t 	priority;
+	uint32_t 	gang_quantum;
+	uint32_t 	inprocess_gang_priority;
+	uint32_t 	priority_level;
+	int 		global_priority_level;
+};
+
+struct mes_add_queue_input {
+	uint32_t	process_id;
+	uint64_t	page_table_base_addr;
+	uint64_t	process_va_start;
+	uint64_t	process_va_end;
+	uint64_t	process_quantum;
+	uint64_t	process_context_addr;
+	uint64_t	gang_quantum;
+	uint64_t	gang_context_addr;
+	uint32_t	inprocess_gang_priority;
+	uint32_t	gang_global_priority_level;
+	uint32_t	doorbell_offset;
+	uint64_t	mqd_addr;
+	uint64_t	wptr_addr;
+	uint64_t	wptr_mc_addr;
+	uint32_t	queue_type;
+	uint32_t	paging;
+	uint32_t        gws_base;
+	uint32_t        gws_size;
+	uint64_t	tba_addr;
+	uint64_t	tma_addr;
+	uint32_t	is_kfd_process;
+	uint32_t	is_aql_queue;
+	uint32_t	queue_size;
+};
+
+struct mes_remove_queue_input {
+	uint32_t	doorbell_offset;
+	uint64_t	gang_context_addr;
+};
+
+struct mes_unmap_legacy_queue_input {
+	enum amdgpu_unmap_queues_action    action;
+	uint32_t                           queue_type;
+	uint32_t                           doorbell_offset;
+	uint32_t                           pipe_id;
+	uint32_t                           queue_id;
+	uint64_t                           trail_fence_addr;
+	uint64_t                           trail_fence_data;
+};
+
+struct mes_suspend_gang_input {
+	bool		suspend_all_gangs;
+	uint64_t	gang_context_addr;
+	uint64_t	suspend_fence_addr;
+	uint32_t	suspend_fence_value;
+};
+
+struct mes_resume_gang_input {
+	bool		resume_all_gangs;
+	uint64_t	gang_context_addr;
+};
+
+enum mes_misc_opcode {
+	MES_MISC_OP_WRITE_REG,
+	MES_MISC_OP_READ_REG,
+	MES_MISC_OP_WRM_REG_WAIT,
+	MES_MISC_OP_WRM_REG_WR_WAIT,
+};
+
+struct mes_misc_op_input {
+	enum mes_misc_opcode op;
+
+	union {
+		struct {
+			uint32_t                  reg_offset;
+			uint64_t                  buffer_addr;
+		} read_reg;
+
+		struct {
+			uint32_t                  reg_offset;
+			uint32_t                  reg_value;
+		} write_reg;
+
+		struct {
+			uint32_t                   ref;
+			uint32_t                   mask;
+			uint32_t                   reg0;
+			uint32_t                   reg1;
+		} wrm_reg;
+	};
+};
+
+struct amdgpu_mes_funcs {
+	int (*add_hw_queue)(struct amdgpu_mes *mes,
+			    struct mes_add_queue_input *input);
+
+	int (*remove_hw_queue)(struct amdgpu_mes *mes,
+			       struct mes_remove_queue_input *input);
+
+	int (*unmap_legacy_queue)(struct amdgpu_mes *mes,
+				  struct mes_unmap_legacy_queue_input *input);
+
+	int (*suspend_gang)(struct amdgpu_mes *mes,
+			    struct mes_suspend_gang_input *input);
+
+	int (*resume_gang)(struct amdgpu_mes *mes,
+			   struct mes_resume_gang_input *input);
+
+	int (*misc_op)(struct amdgpu_mes *mes,
+		       struct mes_misc_op_input *input);
+};
+
+#define amdgpu_mes_kiq_hw_init(adev) (adev)->mes.kiq_hw_init((adev))
+#define amdgpu_mes_kiq_hw_fini(adev) (adev)->mes.kiq_hw_fini((adev))
+
+int amdgpu_mes_ctx_get_offs(struct amdgpu_ring *ring, unsigned int id_offs);
+
+int amdgpu_mes_init(struct amdgpu_device *adev);
+void amdgpu_mes_fini(struct amdgpu_device *adev);
+
+int amdgpu_mes_create_process(struct amdgpu_device *adev, int pasid,
+			      struct amdgpu_vm *vm);
+void amdgpu_mes_destroy_process(struct amdgpu_device *adev, int pasid);
+
+int amdgpu_mes_add_gang(struct amdgpu_device *adev, int pasid,
+			struct amdgpu_mes_gang_properties *gprops,
+			int *gang_id);
+int amdgpu_mes_remove_gang(struct amdgpu_device *adev, int gang_id);
+
+int amdgpu_mes_suspend(struct amdgpu_device *adev);
+int amdgpu_mes_resume(struct amdgpu_device *adev);
+
+int amdgpu_mes_add_hw_queue(struct amdgpu_device *adev, int gang_id,
+			    struct amdgpu_mes_queue_properties *qprops,
+			    int *queue_id);
+int amdgpu_mes_remove_hw_queue(struct amdgpu_device *adev, int queue_id);
+
+int amdgpu_mes_unmap_legacy_queue(struct amdgpu_device *adev,
+				  struct amdgpu_ring *ring,
+				  enum amdgpu_unmap_queues_action action,
+				  u64 gpu_addr, u64 seq);
+
+uint32_t amdgpu_mes_rreg(struct amdgpu_device *adev, uint32_t reg);
+int amdgpu_mes_wreg(struct amdgpu_device *adev,
+		    uint32_t reg, uint32_t val);
+int amdgpu_mes_reg_wait(struct amdgpu_device *adev, uint32_t reg,
+			uint32_t val, uint32_t mask);
+int amdgpu_mes_reg_write_reg_wait(struct amdgpu_device *adev,
+				  uint32_t reg0, uint32_t reg1,
+				  uint32_t ref, uint32_t mask);
+
+int amdgpu_mes_add_ring(struct amdgpu_device *adev, int gang_id,
+			int queue_type, int idx,
+			struct amdgpu_mes_ctx_data *ctx_data,
+			struct amdgpu_ring **out);
+void amdgpu_mes_remove_ring(struct amdgpu_device *adev,
+			    struct amdgpu_ring *ring);
+
+uint32_t amdgpu_mes_get_aggregated_doorbell_index(struct amdgpu_device *adev,
+						   enum amdgpu_mes_priority_level prio);
+
+int amdgpu_mes_ctx_alloc_meta_data(struct amdgpu_device *adev,
+				   struct amdgpu_mes_ctx_data *ctx_data);
+void amdgpu_mes_ctx_free_meta_data(struct amdgpu_mes_ctx_data *ctx_data);
+int amdgpu_mes_ctx_map_meta_data(struct amdgpu_device *adev,
+				 struct amdgpu_vm *vm,
+				 struct amdgpu_mes_ctx_data *ctx_data);
+int amdgpu_mes_ctx_unmap_meta_data(struct amdgpu_device *adev,
+				   struct amdgpu_mes_ctx_data *ctx_data);
+
+int amdgpu_mes_self_test(struct amdgpu_device *adev);
+
+int amdgpu_mes_alloc_process_doorbells(struct amdgpu_device *adev,
+					unsigned int *doorbell_index);
+void amdgpu_mes_free_process_doorbells(struct amdgpu_device *adev,
+					unsigned int doorbell_index);
+unsigned int amdgpu_mes_get_doorbell_dw_offset_in_bar(
+					struct amdgpu_device *adev,
+					uint32_t doorbell_index,
+					unsigned int doorbell_id);
+int amdgpu_mes_doorbell_process_slice(struct amdgpu_device *adev);
+
+/*
+ * MES lock can be taken in MMU notifiers.
+ *
+ * A bit more detail about why to set no-FS reclaim with MES lock:
+ *
+ * The purpose of the MMU notifier is to stop GPU access to memory so
+ * that the Linux VM subsystem can move pages around safely. This is
+ * done by preempting user mode queues for the affected process. When
+ * MES is used, MES lock needs to be taken to preempt the queues.
+ *
+ * The MMU notifier callback entry point in the driver is
+ * amdgpu_mn_invalidate_range_start_hsa. The relevant call chain from
+ * there is:
+ * amdgpu_amdkfd_evict_userptr -> kgd2kfd_quiesce_mm ->
+ * kfd_process_evict_queues -> pdd->dev->dqm->ops.evict_process_queues
+ *
+ * The last part of the chain is a function pointer where we take the
+ * MES lock.
+ *
+ * The problem with taking locks in the MMU notifier is, that MMU
+ * notifiers can be called in reclaim-FS context. That's where the
+ * kernel frees up pages to make room for new page allocations under
+ * memory pressure. While we are running in reclaim-FS context, we must
+ * not trigger another memory reclaim operation because that would
+ * recursively reenter the reclaim code and cause a deadlock. The
+ * memalloc_nofs_save/restore calls guarantee that.
+ *
+ * In addition we also need to avoid lock dependencies on other locks taken
+ * under the MES lock, for example reservation locks. Here is a possible
+ * scenario of a deadlock:
+ * Thread A: takes and holds reservation lock | triggers reclaim-FS |
+ * MMU notifier | blocks trying to take MES lock
+ * Thread B: takes and holds MES lock | blocks trying to take reservation lock
+ *
+ * In this scenario Thread B gets involved in a deadlock even without
+ * triggering a reclaim-FS operation itself.
+ * To fix this and break the lock dependency chain you'd need to either:
+ * 1. protect reservation locks with memalloc_nofs_save/restore, or
+ * 2. avoid taking reservation locks under the MES lock.
+ *
+ * Reservation locks are taken all over the kernel in different subsystems, we
+ * have no control over them and their lock dependencies.So the only workable
+ * solution is to avoid taking other locks under the MES lock.
+ * As a result, make sure no reclaim-FS happens while holding this lock anywhere
+ * to prevent deadlocks when an MMU notifier runs in reclaim-FS context.
+ */
+static inline void amdgpu_mes_lock(struct amdgpu_mes *mes)
+{
+	mutex_lock(&mes->mutex_hidden);
+	mes->saved_flags = memalloc_noreclaim_save();
+}
+
+static inline void amdgpu_mes_unlock(struct amdgpu_mes *mes)
+{
+	memalloc_noreclaim_restore(mes->saved_flags);
+	mutex_unlock(&mes->mutex_hidden);
+}
+#endif /* __AMDGPU_MES_H__ */