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, 534 insertions, 0 deletions

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h
new file mode 100644
index 000000000..703fd5817
--- /dev/null
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h
@@ -0,0 +1,534 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * IOMMU API for ARM architected SMMU implementations.
+ *
+ * Copyright (C) 2013 ARM Limited
+ *
+ * Author: Will Deacon <will.deacon@arm.com>
+ */
+
+#ifndef _ARM_SMMU_H
+#define _ARM_SMMU_H
+
+#include <linux/atomic.h>
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io-64-nonatomic-hi-lo.h>
+#include <linux/io-pgtable.h>
+#include <linux/iommu.h>
+#include <linux/irqreturn.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+/* Configuration registers */
+#define ARM_SMMU_GR0_sCR0		0x0
+#define ARM_SMMU_sCR0_VMID16EN		BIT(31)
+#define ARM_SMMU_sCR0_BSU		GENMASK(15, 14)
+#define ARM_SMMU_sCR0_FB		BIT(13)
+#define ARM_SMMU_sCR0_PTM		BIT(12)
+#define ARM_SMMU_sCR0_VMIDPNE		BIT(11)
+#define ARM_SMMU_sCR0_USFCFG		BIT(10)
+#define ARM_SMMU_sCR0_GCFGFIE		BIT(5)
+#define ARM_SMMU_sCR0_GCFGFRE		BIT(4)
+#define ARM_SMMU_sCR0_EXIDENABLE	BIT(3)
+#define ARM_SMMU_sCR0_GFIE		BIT(2)
+#define ARM_SMMU_sCR0_GFRE		BIT(1)
+#define ARM_SMMU_sCR0_CLIENTPD		BIT(0)
+
+/* Auxiliary Configuration register */
+#define ARM_SMMU_GR0_sACR		0x10
+
+/* Identification registers */
+#define ARM_SMMU_GR0_ID0		0x20
+#define ARM_SMMU_ID0_S1TS		BIT(30)
+#define ARM_SMMU_ID0_S2TS		BIT(29)
+#define ARM_SMMU_ID0_NTS		BIT(28)
+#define ARM_SMMU_ID0_SMS		BIT(27)
+#define ARM_SMMU_ID0_ATOSNS		BIT(26)
+#define ARM_SMMU_ID0_PTFS_NO_AARCH32	BIT(25)
+#define ARM_SMMU_ID0_PTFS_NO_AARCH32S	BIT(24)
+#define ARM_SMMU_ID0_NUMIRPT		GENMASK(23, 16)
+#define ARM_SMMU_ID0_CTTW		BIT(14)
+#define ARM_SMMU_ID0_NUMSIDB		GENMASK(12, 9)
+#define ARM_SMMU_ID0_EXIDS		BIT(8)
+#define ARM_SMMU_ID0_NUMSMRG		GENMASK(7, 0)
+
+#define ARM_SMMU_GR0_ID1		0x24
+#define ARM_SMMU_ID1_PAGESIZE		BIT(31)
+#define ARM_SMMU_ID1_NUMPAGENDXB	GENMASK(30, 28)
+#define ARM_SMMU_ID1_NUMS2CB		GENMASK(23, 16)
+#define ARM_SMMU_ID1_NUMCB		GENMASK(7, 0)
+
+#define ARM_SMMU_GR0_ID2		0x28
+#define ARM_SMMU_ID2_VMID16		BIT(15)
+#define ARM_SMMU_ID2_PTFS_64K		BIT(14)
+#define ARM_SMMU_ID2_PTFS_16K		BIT(13)
+#define ARM_SMMU_ID2_PTFS_4K		BIT(12)
+#define ARM_SMMU_ID2_UBS		GENMASK(11, 8)
+#define ARM_SMMU_ID2_OAS		GENMASK(7, 4)
+#define ARM_SMMU_ID2_IAS		GENMASK(3, 0)
+
+#define ARM_SMMU_GR0_ID3		0x2c
+#define ARM_SMMU_GR0_ID4		0x30
+#define ARM_SMMU_GR0_ID5		0x34
+#define ARM_SMMU_GR0_ID6		0x38
+
+#define ARM_SMMU_GR0_ID7		0x3c
+#define ARM_SMMU_ID7_MAJOR		GENMASK(7, 4)
+#define ARM_SMMU_ID7_MINOR		GENMASK(3, 0)
+
+#define ARM_SMMU_GR0_sGFSR		0x48
+#define ARM_SMMU_sGFSR_USF		BIT(1)
+
+#define ARM_SMMU_GR0_sGFSYNR0		0x50
+#define ARM_SMMU_GR0_sGFSYNR1		0x54
+#define ARM_SMMU_GR0_sGFSYNR2		0x58
+
+/* Global TLB invalidation */
+#define ARM_SMMU_GR0_TLBIVMID		0x64
+#define ARM_SMMU_GR0_TLBIALLNSNH	0x68
+#define ARM_SMMU_GR0_TLBIALLH		0x6c
+#define ARM_SMMU_GR0_sTLBGSYNC		0x70
+
+#define ARM_SMMU_GR0_sTLBGSTATUS	0x74
+#define ARM_SMMU_sTLBGSTATUS_GSACTIVE	BIT(0)
+
+/* Stream mapping registers */
+#define ARM_SMMU_GR0_SMR(n)		(0x800 + ((n) << 2))
+#define ARM_SMMU_SMR_VALID		BIT(31)
+#define ARM_SMMU_SMR_MASK		GENMASK(31, 16)
+#define ARM_SMMU_SMR_ID			GENMASK(15, 0)
+
+#define ARM_SMMU_GR0_S2CR(n)		(0xc00 + ((n) << 2))
+#define ARM_SMMU_S2CR_PRIVCFG		GENMASK(25, 24)
+enum arm_smmu_s2cr_privcfg {
+	S2CR_PRIVCFG_DEFAULT,
+	S2CR_PRIVCFG_DIPAN,
+	S2CR_PRIVCFG_UNPRIV,
+	S2CR_PRIVCFG_PRIV,
+};
+#define ARM_SMMU_S2CR_TYPE		GENMASK(17, 16)
+enum arm_smmu_s2cr_type {
+	S2CR_TYPE_TRANS,
+	S2CR_TYPE_BYPASS,
+	S2CR_TYPE_FAULT,
+};
+#define ARM_SMMU_S2CR_EXIDVALID		BIT(10)
+#define ARM_SMMU_S2CR_CBNDX		GENMASK(7, 0)
+
+/* Context bank attribute registers */
+#define ARM_SMMU_GR1_CBAR(n)		(0x0 + ((n) << 2))
+#define ARM_SMMU_CBAR_IRPTNDX		GENMASK(31, 24)
+#define ARM_SMMU_CBAR_TYPE		GENMASK(17, 16)
+enum arm_smmu_cbar_type {
+	CBAR_TYPE_S2_TRANS,
+	CBAR_TYPE_S1_TRANS_S2_BYPASS,
+	CBAR_TYPE_S1_TRANS_S2_FAULT,
+	CBAR_TYPE_S1_TRANS_S2_TRANS,
+};
+#define ARM_SMMU_CBAR_S1_MEMATTR	GENMASK(15, 12)
+#define ARM_SMMU_CBAR_S1_MEMATTR_WB	0xf
+#define ARM_SMMU_CBAR_S1_BPSHCFG	GENMASK(9, 8)
+#define ARM_SMMU_CBAR_S1_BPSHCFG_NSH	3
+#define ARM_SMMU_CBAR_VMID		GENMASK(7, 0)
+
+#define ARM_SMMU_GR1_CBFRSYNRA(n)	(0x400 + ((n) << 2))
+
+#define ARM_SMMU_GR1_CBA2R(n)		(0x800 + ((n) << 2))
+#define ARM_SMMU_CBA2R_VMID16		GENMASK(31, 16)
+#define ARM_SMMU_CBA2R_VA64		BIT(0)
+
+#define ARM_SMMU_CB_SCTLR		0x0
+#define ARM_SMMU_SCTLR_S1_ASIDPNE	BIT(12)
+#define ARM_SMMU_SCTLR_CFCFG		BIT(7)
+#define ARM_SMMU_SCTLR_HUPCF		BIT(8)
+#define ARM_SMMU_SCTLR_CFIE		BIT(6)
+#define ARM_SMMU_SCTLR_CFRE		BIT(5)
+#define ARM_SMMU_SCTLR_E		BIT(4)
+#define ARM_SMMU_SCTLR_AFE		BIT(2)
+#define ARM_SMMU_SCTLR_TRE		BIT(1)
+#define ARM_SMMU_SCTLR_M		BIT(0)
+
+#define ARM_SMMU_CB_ACTLR		0x4
+
+#define ARM_SMMU_CB_RESUME		0x8
+#define ARM_SMMU_RESUME_TERMINATE	BIT(0)
+
+#define ARM_SMMU_CB_TCR2		0x10
+#define ARM_SMMU_TCR2_SEP		GENMASK(17, 15)
+#define ARM_SMMU_TCR2_SEP_UPSTREAM	0x7
+#define ARM_SMMU_TCR2_AS		BIT(4)
+#define ARM_SMMU_TCR2_PASIZE		GENMASK(3, 0)
+
+#define ARM_SMMU_CB_TTBR0		0x20
+#define ARM_SMMU_CB_TTBR1		0x28
+#define ARM_SMMU_TTBRn_ASID		GENMASK_ULL(63, 48)
+
+#define ARM_SMMU_CB_TCR			0x30
+#define ARM_SMMU_TCR_EAE		BIT(31)
+#define ARM_SMMU_TCR_EPD1		BIT(23)
+#define ARM_SMMU_TCR_A1			BIT(22)
+#define ARM_SMMU_TCR_TG0		GENMASK(15, 14)
+#define ARM_SMMU_TCR_SH0		GENMASK(13, 12)
+#define ARM_SMMU_TCR_ORGN0		GENMASK(11, 10)
+#define ARM_SMMU_TCR_IRGN0		GENMASK(9, 8)
+#define ARM_SMMU_TCR_EPD0		BIT(7)
+#define ARM_SMMU_TCR_T0SZ		GENMASK(5, 0)
+
+#define ARM_SMMU_VTCR_RES1		BIT(31)
+#define ARM_SMMU_VTCR_PS		GENMASK(18, 16)
+#define ARM_SMMU_VTCR_TG0		ARM_SMMU_TCR_TG0
+#define ARM_SMMU_VTCR_SH0		ARM_SMMU_TCR_SH0
+#define ARM_SMMU_VTCR_ORGN0		ARM_SMMU_TCR_ORGN0
+#define ARM_SMMU_VTCR_IRGN0		ARM_SMMU_TCR_IRGN0
+#define ARM_SMMU_VTCR_SL0		GENMASK(7, 6)
+#define ARM_SMMU_VTCR_T0SZ		ARM_SMMU_TCR_T0SZ
+
+#define ARM_SMMU_CB_CONTEXTIDR		0x34
+#define ARM_SMMU_CB_S1_MAIR0		0x38
+#define ARM_SMMU_CB_S1_MAIR1		0x3c
+
+#define ARM_SMMU_CB_PAR			0x50
+#define ARM_SMMU_CB_PAR_F		BIT(0)
+
+#define ARM_SMMU_CB_FSR			0x58
+#define ARM_SMMU_FSR_MULTI		BIT(31)
+#define ARM_SMMU_FSR_SS			BIT(30)
+#define ARM_SMMU_FSR_UUT		BIT(8)
+#define ARM_SMMU_FSR_ASF		BIT(7)
+#define ARM_SMMU_FSR_TLBLKF		BIT(6)
+#define ARM_SMMU_FSR_TLBMCF		BIT(5)
+#define ARM_SMMU_FSR_EF			BIT(4)
+#define ARM_SMMU_FSR_PF			BIT(3)
+#define ARM_SMMU_FSR_AFF		BIT(2)
+#define ARM_SMMU_FSR_TF			BIT(1)
+
+#define ARM_SMMU_FSR_IGN		(ARM_SMMU_FSR_AFF |		\
+					 ARM_SMMU_FSR_ASF |		\
+					 ARM_SMMU_FSR_TLBMCF |		\
+					 ARM_SMMU_FSR_TLBLKF)
+
+#define ARM_SMMU_FSR_FAULT		(ARM_SMMU_FSR_MULTI |		\
+					 ARM_SMMU_FSR_SS |		\
+					 ARM_SMMU_FSR_UUT |		\
+					 ARM_SMMU_FSR_EF |		\
+					 ARM_SMMU_FSR_PF |		\
+					 ARM_SMMU_FSR_TF |		\
+					 ARM_SMMU_FSR_IGN)
+
+#define ARM_SMMU_CB_FAR			0x60
+
+#define ARM_SMMU_CB_FSYNR0		0x68
+#define ARM_SMMU_FSYNR0_WNR		BIT(4)
+
+#define ARM_SMMU_CB_FSYNR1		0x6c
+
+#define ARM_SMMU_CB_S1_TLBIVA		0x600
+#define ARM_SMMU_CB_S1_TLBIASID		0x610
+#define ARM_SMMU_CB_S1_TLBIVAL		0x620
+#define ARM_SMMU_CB_S2_TLBIIPAS2	0x630
+#define ARM_SMMU_CB_S2_TLBIIPAS2L	0x638
+#define ARM_SMMU_CB_TLBSYNC		0x7f0
+#define ARM_SMMU_CB_TLBSTATUS		0x7f4
+#define ARM_SMMU_CB_ATS1PR		0x800
+
+#define ARM_SMMU_CB_ATSR		0x8f0
+#define ARM_SMMU_ATSR_ACTIVE		BIT(0)
+
+
+/* Maximum number of context banks per SMMU */
+#define ARM_SMMU_MAX_CBS		128
+
+#define TLB_LOOP_TIMEOUT		1000000	/* 1s! */
+#define TLB_SPIN_COUNT			10
+
+/* Shared driver definitions */
+enum arm_smmu_arch_version {
+	ARM_SMMU_V1,
+	ARM_SMMU_V1_64K,
+	ARM_SMMU_V2,
+};
+
+enum arm_smmu_implementation {
+	GENERIC_SMMU,
+	ARM_MMU500,
+	CAVIUM_SMMUV2,
+	QCOM_SMMUV2,
+};
+
+struct arm_smmu_s2cr {
+	struct iommu_group		*group;
+	int				count;
+	enum arm_smmu_s2cr_type		type;
+	enum arm_smmu_s2cr_privcfg	privcfg;
+	u8				cbndx;
+};
+
+struct arm_smmu_smr {
+	u16				mask;
+	u16				id;
+	bool				valid;
+	bool				pinned;
+};
+
+struct arm_smmu_device {
+	struct device			*dev;
+
+	void __iomem			*base;
+	phys_addr_t			ioaddr;
+	unsigned int			numpage;
+	unsigned int			pgshift;
+
+#define ARM_SMMU_FEAT_COHERENT_WALK	(1 << 0)
+#define ARM_SMMU_FEAT_STREAM_MATCH	(1 << 1)
+#define ARM_SMMU_FEAT_TRANS_S1		(1 << 2)
+#define ARM_SMMU_FEAT_TRANS_S2		(1 << 3)
+#define ARM_SMMU_FEAT_TRANS_NESTED	(1 << 4)
+#define ARM_SMMU_FEAT_TRANS_OPS		(1 << 5)
+#define ARM_SMMU_FEAT_VMID16		(1 << 6)
+#define ARM_SMMU_FEAT_FMT_AARCH64_4K	(1 << 7)
+#define ARM_SMMU_FEAT_FMT_AARCH64_16K	(1 << 8)
+#define ARM_SMMU_FEAT_FMT_AARCH64_64K	(1 << 9)
+#define ARM_SMMU_FEAT_FMT_AARCH32_L	(1 << 10)
+#define ARM_SMMU_FEAT_FMT_AARCH32_S	(1 << 11)
+#define ARM_SMMU_FEAT_EXIDS		(1 << 12)
+	u32				features;
+
+	enum arm_smmu_arch_version	version;
+	enum arm_smmu_implementation	model;
+	const struct arm_smmu_impl	*impl;
+
+	u32				num_context_banks;
+	u32				num_s2_context_banks;
+	DECLARE_BITMAP(context_map, ARM_SMMU_MAX_CBS);
+	struct arm_smmu_cb		*cbs;
+	atomic_t			irptndx;
+
+	u32				num_mapping_groups;
+	u16				streamid_mask;
+	u16				smr_mask_mask;
+	struct arm_smmu_smr		*smrs;
+	struct arm_smmu_s2cr		*s2crs;
+	struct mutex			stream_map_mutex;
+
+	unsigned long			va_size;
+	unsigned long			ipa_size;
+	unsigned long			pa_size;
+	unsigned long			pgsize_bitmap;
+
+	int				num_context_irqs;
+	int				num_clks;
+	unsigned int			*irqs;
+	struct clk_bulk_data		*clks;
+
+	spinlock_t			global_sync_lock;
+
+	/* IOMMU core code handle */
+	struct iommu_device		iommu;
+};
+
+enum arm_smmu_context_fmt {
+	ARM_SMMU_CTX_FMT_NONE,
+	ARM_SMMU_CTX_FMT_AARCH64,
+	ARM_SMMU_CTX_FMT_AARCH32_L,
+	ARM_SMMU_CTX_FMT_AARCH32_S,
+};
+
+struct arm_smmu_cfg {
+	u8				cbndx;
+	u8				irptndx;
+	union {
+		u16			asid;
+		u16			vmid;
+	};
+	enum arm_smmu_cbar_type		cbar;
+	enum arm_smmu_context_fmt	fmt;
+	bool				flush_walk_prefer_tlbiasid;
+};
+#define ARM_SMMU_INVALID_IRPTNDX	0xff
+
+struct arm_smmu_cb {
+	u64				ttbr[2];
+	u32				tcr[2];
+	u32				mair[2];
+	struct arm_smmu_cfg		*cfg;
+};
+
+enum arm_smmu_domain_stage {
+	ARM_SMMU_DOMAIN_S1 = 0,
+	ARM_SMMU_DOMAIN_S2,
+	ARM_SMMU_DOMAIN_NESTED,
+	ARM_SMMU_DOMAIN_BYPASS,
+};
+
+struct arm_smmu_domain {
+	struct arm_smmu_device		*smmu;
+	struct io_pgtable_ops		*pgtbl_ops;
+	unsigned long			pgtbl_quirks;
+	const struct iommu_flush_ops	*flush_ops;
+	struct arm_smmu_cfg		cfg;
+	enum arm_smmu_domain_stage	stage;
+	struct mutex			init_mutex; /* Protects smmu pointer */
+	spinlock_t			cb_lock; /* Serialises ATS1* ops and TLB syncs */
+	struct iommu_domain		domain;
+};
+
+struct arm_smmu_master_cfg {
+	struct arm_smmu_device		*smmu;
+	s16				smendx[];
+};
+
+static inline u32 arm_smmu_lpae_tcr(const struct io_pgtable_cfg *cfg)
+{
+	u32 tcr = FIELD_PREP(ARM_SMMU_TCR_TG0, cfg->arm_lpae_s1_cfg.tcr.tg) |
+		FIELD_PREP(ARM_SMMU_TCR_SH0, cfg->arm_lpae_s1_cfg.tcr.sh) |
+		FIELD_PREP(ARM_SMMU_TCR_ORGN0, cfg->arm_lpae_s1_cfg.tcr.orgn) |
+		FIELD_PREP(ARM_SMMU_TCR_IRGN0, cfg->arm_lpae_s1_cfg.tcr.irgn) |
+		FIELD_PREP(ARM_SMMU_TCR_T0SZ, cfg->arm_lpae_s1_cfg.tcr.tsz);
+
+       /*
+	* When TTBR1 is selected shift the TCR fields by 16 bits and disable
+	* translation in TTBR0
+	*/
+	if (cfg->quirks & IO_PGTABLE_QUIRK_ARM_TTBR1) {
+		tcr = (tcr << 16) & ~ARM_SMMU_TCR_A1;
+		tcr |= ARM_SMMU_TCR_EPD0;
+	} else
+		tcr |= ARM_SMMU_TCR_EPD1;
+
+	return tcr;
+}
+
+static inline u32 arm_smmu_lpae_tcr2(const struct io_pgtable_cfg *cfg)
+{
+	return FIELD_PREP(ARM_SMMU_TCR2_PASIZE, cfg->arm_lpae_s1_cfg.tcr.ips) |
+	       FIELD_PREP(ARM_SMMU_TCR2_SEP, ARM_SMMU_TCR2_SEP_UPSTREAM);
+}
+
+static inline u32 arm_smmu_lpae_vtcr(const struct io_pgtable_cfg *cfg)
+{
+	return ARM_SMMU_VTCR_RES1 |
+	       FIELD_PREP(ARM_SMMU_VTCR_PS, cfg->arm_lpae_s2_cfg.vtcr.ps) |
+	       FIELD_PREP(ARM_SMMU_VTCR_TG0, cfg->arm_lpae_s2_cfg.vtcr.tg) |
+	       FIELD_PREP(ARM_SMMU_VTCR_SH0, cfg->arm_lpae_s2_cfg.vtcr.sh) |
+	       FIELD_PREP(ARM_SMMU_VTCR_ORGN0, cfg->arm_lpae_s2_cfg.vtcr.orgn) |
+	       FIELD_PREP(ARM_SMMU_VTCR_IRGN0, cfg->arm_lpae_s2_cfg.vtcr.irgn) |
+	       FIELD_PREP(ARM_SMMU_VTCR_SL0, cfg->arm_lpae_s2_cfg.vtcr.sl) |
+	       FIELD_PREP(ARM_SMMU_VTCR_T0SZ, cfg->arm_lpae_s2_cfg.vtcr.tsz);
+}
+
+/* Implementation details, yay! */
+struct arm_smmu_impl {
+	u32 (*read_reg)(struct arm_smmu_device *smmu, int page, int offset);
+	void (*write_reg)(struct arm_smmu_device *smmu, int page, int offset,
+			  u32 val);
+	u64 (*read_reg64)(struct arm_smmu_device *smmu, int page, int offset);
+	void (*write_reg64)(struct arm_smmu_device *smmu, int page, int offset,
+			    u64 val);
+	int (*cfg_probe)(struct arm_smmu_device *smmu);
+	int (*reset)(struct arm_smmu_device *smmu);
+	int (*init_context)(struct arm_smmu_domain *smmu_domain,
+			struct io_pgtable_cfg *cfg, struct device *dev);
+	void (*tlb_sync)(struct arm_smmu_device *smmu, int page, int sync,
+			 int status);
+	int (*def_domain_type)(struct device *dev);
+	irqreturn_t (*global_fault)(int irq, void *dev);
+	irqreturn_t (*context_fault)(int irq, void *dev);
+	int (*alloc_context_bank)(struct arm_smmu_domain *smmu_domain,
+				  struct arm_smmu_device *smmu,
+				  struct device *dev, int start);
+	void (*write_s2cr)(struct arm_smmu_device *smmu, int idx);
+	void (*write_sctlr)(struct arm_smmu_device *smmu, int idx, u32 reg);
+	void (*probe_finalize)(struct arm_smmu_device *smmu, struct device *dev);
+};
+
+#define INVALID_SMENDX			-1
+#define cfg_smendx(cfg, fw, i) \
+	(i >= fw->num_ids ? INVALID_SMENDX : cfg->smendx[i])
+#define for_each_cfg_sme(cfg, fw, i, idx) \
+	for (i = 0; idx = cfg_smendx(cfg, fw, i), i < fw->num_ids; ++i)
+
+static inline int __arm_smmu_alloc_bitmap(unsigned long *map, int start, int end)
+{
+	int idx;
+
+	do {
+		idx = find_next_zero_bit(map, end, start);
+		if (idx == end)
+			return -ENOSPC;
+	} while (test_and_set_bit(idx, map));
+
+	return idx;
+}
+
+static inline void __iomem *arm_smmu_page(struct arm_smmu_device *smmu, int n)
+{
+	return smmu->base + (n << smmu->pgshift);
+}
+
+static inline u32 arm_smmu_readl(struct arm_smmu_device *smmu, int page, int offset)
+{
+	if (smmu->impl && unlikely(smmu->impl->read_reg))
+		return smmu->impl->read_reg(smmu, page, offset);
+	return readl_relaxed(arm_smmu_page(smmu, page) + offset);
+}
+
+static inline void arm_smmu_writel(struct arm_smmu_device *smmu, int page,
+				   int offset, u32 val)
+{
+	if (smmu->impl && unlikely(smmu->impl->write_reg))
+		smmu->impl->write_reg(smmu, page, offset, val);
+	else
+		writel_relaxed(val, arm_smmu_page(smmu, page) + offset);
+}
+
+static inline u64 arm_smmu_readq(struct arm_smmu_device *smmu, int page, int offset)
+{
+	if (smmu->impl && unlikely(smmu->impl->read_reg64))
+		return smmu->impl->read_reg64(smmu, page, offset);
+	return readq_relaxed(arm_smmu_page(smmu, page) + offset);
+}
+
+static inline void arm_smmu_writeq(struct arm_smmu_device *smmu, int page,
+				   int offset, u64 val)
+{
+	if (smmu->impl && unlikely(smmu->impl->write_reg64))
+		smmu->impl->write_reg64(smmu, page, offset, val);
+	else
+		writeq_relaxed(val, arm_smmu_page(smmu, page) + offset);
+}
+
+#define ARM_SMMU_GR0		0
+#define ARM_SMMU_GR1		1
+#define ARM_SMMU_CB(s, n)	((s)->numpage + (n))
+
+#define arm_smmu_gr0_read(s, o)		\
+	arm_smmu_readl((s), ARM_SMMU_GR0, (o))
+#define arm_smmu_gr0_write(s, o, v)	\
+	arm_smmu_writel((s), ARM_SMMU_GR0, (o), (v))
+
+#define arm_smmu_gr1_read(s, o)		\
+	arm_smmu_readl((s), ARM_SMMU_GR1, (o))
+#define arm_smmu_gr1_write(s, o, v)	\
+	arm_smmu_writel((s), ARM_SMMU_GR1, (o), (v))
+
+#define arm_smmu_cb_read(s, n, o)	\
+	arm_smmu_readl((s), ARM_SMMU_CB((s), (n)), (o))
+#define arm_smmu_cb_write(s, n, o, v)	\
+	arm_smmu_writel((s), ARM_SMMU_CB((s), (n)), (o), (v))
+#define arm_smmu_cb_readq(s, n, o)	\
+	arm_smmu_readq((s), ARM_SMMU_CB((s), (n)), (o))
+#define arm_smmu_cb_writeq(s, n, o, v)	\
+	arm_smmu_writeq((s), ARM_SMMU_CB((s), (n)), (o), (v))
+
+struct arm_smmu_device *arm_smmu_impl_init(struct arm_smmu_device *smmu);
+struct arm_smmu_device *nvidia_smmu_impl_init(struct arm_smmu_device *smmu);
+struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu);
+
+void arm_smmu_write_context_bank(struct arm_smmu_device *smmu, int idx);
+int arm_mmu500_reset(struct arm_smmu_device *smmu);
+
+#endif /* _ARM_SMMU_H */