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, 1053 insertions, 0 deletions

diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c
new file mode 100644
index 000000000..c1350a36f
--- /dev/null
+++ b/drivers/dma/hisi_dma.c
@@ -0,0 +1,1053 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright(c) 2019-2022 HiSilicon Limited. */
+
+#include <linux/bitfield.h>
+#include <linux/dmaengine.h>
+#include <linux/init.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include "virt-dma.h"
+
+/* HiSilicon DMA register common field define */
+#define HISI_DMA_Q_SQ_BASE_L			0x0
+#define HISI_DMA_Q_SQ_BASE_H			0x4
+#define HISI_DMA_Q_SQ_DEPTH			0x8
+#define HISI_DMA_Q_SQ_TAIL_PTR			0xc
+#define HISI_DMA_Q_CQ_BASE_L			0x10
+#define HISI_DMA_Q_CQ_BASE_H			0x14
+#define HISI_DMA_Q_CQ_DEPTH			0x18
+#define HISI_DMA_Q_CQ_HEAD_PTR			0x1c
+#define HISI_DMA_Q_CTRL0			0x20
+#define HISI_DMA_Q_CTRL0_QUEUE_EN		BIT(0)
+#define HISI_DMA_Q_CTRL0_QUEUE_PAUSE		BIT(4)
+#define HISI_DMA_Q_CTRL1			0x24
+#define HISI_DMA_Q_CTRL1_QUEUE_RESET		BIT(0)
+#define HISI_DMA_Q_FSM_STS			0x30
+#define HISI_DMA_Q_FSM_STS_MASK			GENMASK(3, 0)
+#define HISI_DMA_Q_ERR_INT_NUM0			0x84
+#define HISI_DMA_Q_ERR_INT_NUM1			0x88
+#define HISI_DMA_Q_ERR_INT_NUM2			0x8c
+
+/* HiSilicon IP08 DMA register and field define */
+#define HISI_DMA_HIP08_MODE			0x217C
+#define HISI_DMA_HIP08_Q_BASE			0x0
+#define HISI_DMA_HIP08_Q_CTRL0_ERR_ABORT_EN	BIT(2)
+#define HISI_DMA_HIP08_Q_INT_STS		0x40
+#define HISI_DMA_HIP08_Q_INT_MSK		0x44
+#define HISI_DMA_HIP08_Q_INT_STS_MASK		GENMASK(14, 0)
+#define HISI_DMA_HIP08_Q_ERR_INT_NUM3		0x90
+#define HISI_DMA_HIP08_Q_ERR_INT_NUM4		0x94
+#define HISI_DMA_HIP08_Q_ERR_INT_NUM5		0x98
+#define HISI_DMA_HIP08_Q_ERR_INT_NUM6		0x48
+#define HISI_DMA_HIP08_Q_CTRL0_SQCQ_DRCT	BIT(24)
+
+/* HiSilicon IP09 DMA register and field define */
+#define HISI_DMA_HIP09_DMA_FLR_DISABLE		0xA00
+#define HISI_DMA_HIP09_DMA_FLR_DISABLE_B	BIT(0)
+#define HISI_DMA_HIP09_Q_BASE			0x2000
+#define HISI_DMA_HIP09_Q_CTRL0_ERR_ABORT_EN	GENMASK(31, 28)
+#define HISI_DMA_HIP09_Q_CTRL0_SQ_DRCT		BIT(26)
+#define HISI_DMA_HIP09_Q_CTRL0_CQ_DRCT		BIT(27)
+#define HISI_DMA_HIP09_Q_CTRL1_VA_ENABLE	BIT(2)
+#define HISI_DMA_HIP09_Q_INT_STS		0x40
+#define HISI_DMA_HIP09_Q_INT_MSK		0x44
+#define HISI_DMA_HIP09_Q_INT_STS_MASK		0x1
+#define HISI_DMA_HIP09_Q_ERR_INT_STS		0x48
+#define HISI_DMA_HIP09_Q_ERR_INT_MSK		0x4C
+#define HISI_DMA_HIP09_Q_ERR_INT_STS_MASK	GENMASK(18, 1)
+#define HISI_DMA_HIP09_PORT_CFG_REG(port_id)	(0x800 + \
+						(port_id) * 0x20)
+#define HISI_DMA_HIP09_PORT_CFG_LINK_DOWN_MASK_B	BIT(16)
+
+#define HISI_DMA_HIP09_MAX_PORT_NUM		16
+
+#define HISI_DMA_HIP08_MSI_NUM			32
+#define HISI_DMA_HIP08_CHAN_NUM			30
+#define HISI_DMA_HIP09_MSI_NUM			4
+#define HISI_DMA_HIP09_CHAN_NUM			4
+#define HISI_DMA_REVISION_HIP08B		0x21
+#define HISI_DMA_REVISION_HIP09A		0x30
+
+#define HISI_DMA_Q_OFFSET			0x100
+#define HISI_DMA_Q_DEPTH_VAL			1024
+
+#define PCI_BAR_2				2
+
+#define HISI_DMA_POLL_Q_STS_DELAY_US		10
+#define HISI_DMA_POLL_Q_STS_TIME_OUT_US		1000
+
+#define HISI_DMA_MAX_DIR_NAME_LEN		128
+
+/*
+ * The HIP08B(HiSilicon IP08) and HIP09A(HiSilicon IP09) are DMA iEPs, they
+ * have the same pci device id but different pci revision.
+ * Unfortunately, they have different register layouts, so two layout
+ * enumerations are defined.
+ */
+enum hisi_dma_reg_layout {
+	HISI_DMA_REG_LAYOUT_INVALID = 0,
+	HISI_DMA_REG_LAYOUT_HIP08,
+	HISI_DMA_REG_LAYOUT_HIP09
+};
+
+enum hisi_dma_mode {
+	EP = 0,
+	RC,
+};
+
+enum hisi_dma_chan_status {
+	DISABLE = -1,
+	IDLE = 0,
+	RUN,
+	CPL,
+	PAUSE,
+	HALT,
+	ABORT,
+	WAIT,
+	BUFFCLR,
+};
+
+struct hisi_dma_sqe {
+	__le32 dw0;
+#define OPCODE_MASK			GENMASK(3, 0)
+#define OPCODE_SMALL_PACKAGE		0x1
+#define OPCODE_M2M			0x4
+#define LOCAL_IRQ_EN			BIT(8)
+#define ATTR_SRC_MASK			GENMASK(14, 12)
+	__le32 dw1;
+	__le32 dw2;
+#define ATTR_DST_MASK			GENMASK(26, 24)
+	__le32 length;
+	__le64 src_addr;
+	__le64 dst_addr;
+};
+
+struct hisi_dma_cqe {
+	__le32 rsv0;
+	__le32 rsv1;
+	__le16 sq_head;
+	__le16 rsv2;
+	__le16 rsv3;
+	__le16 w0;
+#define STATUS_MASK			GENMASK(15, 1)
+#define STATUS_SUCC			0x0
+#define VALID_BIT			BIT(0)
+};
+
+struct hisi_dma_desc {
+	struct virt_dma_desc vd;
+	struct hisi_dma_sqe sqe;
+};
+
+struct hisi_dma_chan {
+	struct virt_dma_chan vc;
+	struct hisi_dma_dev *hdma_dev;
+	struct hisi_dma_sqe *sq;
+	struct hisi_dma_cqe *cq;
+	dma_addr_t sq_dma;
+	dma_addr_t cq_dma;
+	u32 sq_tail;
+	u32 cq_head;
+	u32 qp_num;
+	enum hisi_dma_chan_status status;
+	struct hisi_dma_desc *desc;
+};
+
+struct hisi_dma_dev {
+	struct pci_dev *pdev;
+	void __iomem *base;
+	struct dma_device dma_dev;
+	u32 chan_num;
+	u32 chan_depth;
+	enum hisi_dma_reg_layout reg_layout;
+	void __iomem *queue_base; /* queue region start of register */
+	struct hisi_dma_chan chan[];
+};
+
+#ifdef CONFIG_DEBUG_FS
+
+static const struct debugfs_reg32 hisi_dma_comm_chan_regs[] = {
+	{"DMA_QUEUE_SQ_DEPTH                ", 0x0008ull},
+	{"DMA_QUEUE_SQ_TAIL_PTR             ", 0x000Cull},
+	{"DMA_QUEUE_CQ_DEPTH                ", 0x0018ull},
+	{"DMA_QUEUE_CQ_HEAD_PTR             ", 0x001Cull},
+	{"DMA_QUEUE_CTRL0                   ", 0x0020ull},
+	{"DMA_QUEUE_CTRL1                   ", 0x0024ull},
+	{"DMA_QUEUE_FSM_STS                 ", 0x0030ull},
+	{"DMA_QUEUE_SQ_STS                  ", 0x0034ull},
+	{"DMA_QUEUE_CQ_TAIL_PTR             ", 0x003Cull},
+	{"DMA_QUEUE_INT_STS                 ", 0x0040ull},
+	{"DMA_QUEUE_INT_MSK                 ", 0x0044ull},
+	{"DMA_QUEUE_INT_RO                  ", 0x006Cull},
+};
+
+static const struct debugfs_reg32 hisi_dma_hip08_chan_regs[] = {
+	{"DMA_QUEUE_BYTE_CNT                ", 0x0038ull},
+	{"DMA_ERR_INT_NUM6                  ", 0x0048ull},
+	{"DMA_QUEUE_DESP0                   ", 0x0050ull},
+	{"DMA_QUEUE_DESP1                   ", 0x0054ull},
+	{"DMA_QUEUE_DESP2                   ", 0x0058ull},
+	{"DMA_QUEUE_DESP3                   ", 0x005Cull},
+	{"DMA_QUEUE_DESP4                   ", 0x0074ull},
+	{"DMA_QUEUE_DESP5                   ", 0x0078ull},
+	{"DMA_QUEUE_DESP6                   ", 0x007Cull},
+	{"DMA_QUEUE_DESP7                   ", 0x0080ull},
+	{"DMA_ERR_INT_NUM0                  ", 0x0084ull},
+	{"DMA_ERR_INT_NUM1                  ", 0x0088ull},
+	{"DMA_ERR_INT_NUM2                  ", 0x008Cull},
+	{"DMA_ERR_INT_NUM3                  ", 0x0090ull},
+	{"DMA_ERR_INT_NUM4                  ", 0x0094ull},
+	{"DMA_ERR_INT_NUM5                  ", 0x0098ull},
+	{"DMA_QUEUE_SQ_STS2                 ", 0x00A4ull},
+};
+
+static const struct debugfs_reg32 hisi_dma_hip09_chan_regs[] = {
+	{"DMA_QUEUE_ERR_INT_STS             ", 0x0048ull},
+	{"DMA_QUEUE_ERR_INT_MSK             ", 0x004Cull},
+	{"DFX_SQ_READ_ERR_PTR               ", 0x0068ull},
+	{"DFX_DMA_ERR_INT_NUM0              ", 0x0084ull},
+	{"DFX_DMA_ERR_INT_NUM1              ", 0x0088ull},
+	{"DFX_DMA_ERR_INT_NUM2              ", 0x008Cull},
+	{"DFX_DMA_QUEUE_SQ_STS2             ", 0x00A4ull},
+};
+
+static const struct debugfs_reg32 hisi_dma_hip08_comm_regs[] = {
+	{"DMA_ECC_ERR_ADDR                  ", 0x2004ull},
+	{"DMA_ECC_ECC_CNT                   ", 0x2014ull},
+	{"COMMON_AND_CH_ERR_STS             ", 0x2030ull},
+	{"LOCAL_CPL_ID_STS_0                ", 0x20E0ull},
+	{"LOCAL_CPL_ID_STS_1                ", 0x20E4ull},
+	{"LOCAL_CPL_ID_STS_2                ", 0x20E8ull},
+	{"LOCAL_CPL_ID_STS_3                ", 0x20ECull},
+	{"LOCAL_TLP_NUM                     ", 0x2158ull},
+	{"SQCQ_TLP_NUM                      ", 0x2164ull},
+	{"CPL_NUM                           ", 0x2168ull},
+	{"INF_BACK_PRESS_STS                ", 0x2170ull},
+	{"DMA_CH_RAS_LEVEL                  ", 0x2184ull},
+	{"DMA_CM_RAS_LEVEL                  ", 0x2188ull},
+	{"DMA_CH_ERR_STS                    ", 0x2190ull},
+	{"DMA_CH_DONE_STS                   ", 0x2194ull},
+	{"DMA_SQ_TAG_STS_0                  ", 0x21A0ull},
+	{"DMA_SQ_TAG_STS_1                  ", 0x21A4ull},
+	{"DMA_SQ_TAG_STS_2                  ", 0x21A8ull},
+	{"DMA_SQ_TAG_STS_3                  ", 0x21ACull},
+	{"LOCAL_P_ID_STS_0                  ", 0x21B0ull},
+	{"LOCAL_P_ID_STS_1                  ", 0x21B4ull},
+	{"LOCAL_P_ID_STS_2                  ", 0x21B8ull},
+	{"LOCAL_P_ID_STS_3                  ", 0x21BCull},
+	{"DMA_PREBUFF_INFO_0                ", 0x2200ull},
+	{"DMA_CM_TABLE_INFO_0               ", 0x2220ull},
+	{"DMA_CM_CE_RO                      ", 0x2244ull},
+	{"DMA_CM_NFE_RO                     ", 0x2248ull},
+	{"DMA_CM_FE_RO                      ", 0x224Cull},
+};
+
+static const struct debugfs_reg32 hisi_dma_hip09_comm_regs[] = {
+	{"COMMON_AND_CH_ERR_STS             ", 0x0030ull},
+	{"DMA_PORT_IDLE_STS                 ", 0x0150ull},
+	{"DMA_CH_RAS_LEVEL                  ", 0x0184ull},
+	{"DMA_CM_RAS_LEVEL                  ", 0x0188ull},
+	{"DMA_CM_CE_RO                      ", 0x0244ull},
+	{"DMA_CM_NFE_RO                     ", 0x0248ull},
+	{"DMA_CM_FE_RO                      ", 0x024Cull},
+	{"DFX_INF_BACK_PRESS_STS0           ", 0x1A40ull},
+	{"DFX_INF_BACK_PRESS_STS1           ", 0x1A44ull},
+	{"DFX_INF_BACK_PRESS_STS2           ", 0x1A48ull},
+	{"DFX_DMA_WRR_DISABLE               ", 0x1A4Cull},
+	{"DFX_PA_REQ_TLP_NUM                ", 0x1C00ull},
+	{"DFX_PA_BACK_TLP_NUM               ", 0x1C04ull},
+	{"DFX_PA_RETRY_TLP_NUM              ", 0x1C08ull},
+	{"DFX_LOCAL_NP_TLP_NUM              ", 0x1C0Cull},
+	{"DFX_LOCAL_CPL_HEAD_TLP_NUM        ", 0x1C10ull},
+	{"DFX_LOCAL_CPL_DATA_TLP_NUM        ", 0x1C14ull},
+	{"DFX_LOCAL_CPL_EXT_DATA_TLP_NUM    ", 0x1C18ull},
+	{"DFX_LOCAL_P_HEAD_TLP_NUM          ", 0x1C1Cull},
+	{"DFX_LOCAL_P_ACK_TLP_NUM           ", 0x1C20ull},
+	{"DFX_BUF_ALOC_PORT_REQ_NUM         ", 0x1C24ull},
+	{"DFX_BUF_ALOC_PORT_RESULT_NUM      ", 0x1C28ull},
+	{"DFX_BUF_FAIL_SIZE_NUM             ", 0x1C2Cull},
+	{"DFX_BUF_ALOC_SIZE_NUM             ", 0x1C30ull},
+	{"DFX_BUF_NP_RELEASE_SIZE_NUM       ", 0x1C34ull},
+	{"DFX_BUF_P_RELEASE_SIZE_NUM        ", 0x1C38ull},
+	{"DFX_BUF_PORT_RELEASE_SIZE_NUM     ", 0x1C3Cull},
+	{"DFX_DMA_PREBUF_MEM0_ECC_ERR_ADDR  ", 0x1CA8ull},
+	{"DFX_DMA_PREBUF_MEM0_ECC_CNT       ", 0x1CACull},
+	{"DFX_DMA_LOC_NP_OSTB_ECC_ERR_ADDR  ", 0x1CB0ull},
+	{"DFX_DMA_LOC_NP_OSTB_ECC_CNT       ", 0x1CB4ull},
+	{"DFX_DMA_PREBUF_MEM1_ECC_ERR_ADDR  ", 0x1CC0ull},
+	{"DFX_DMA_PREBUF_MEM1_ECC_CNT       ", 0x1CC4ull},
+	{"DMA_CH_DONE_STS                   ", 0x02E0ull},
+	{"DMA_CH_ERR_STS                    ", 0x0320ull},
+};
+#endif /* CONFIG_DEBUG_FS*/
+
+static enum hisi_dma_reg_layout hisi_dma_get_reg_layout(struct pci_dev *pdev)
+{
+	if (pdev->revision == HISI_DMA_REVISION_HIP08B)
+		return HISI_DMA_REG_LAYOUT_HIP08;
+	else if (pdev->revision >= HISI_DMA_REVISION_HIP09A)
+		return HISI_DMA_REG_LAYOUT_HIP09;
+
+	return HISI_DMA_REG_LAYOUT_INVALID;
+}
+
+static u32 hisi_dma_get_chan_num(struct pci_dev *pdev)
+{
+	if (pdev->revision == HISI_DMA_REVISION_HIP08B)
+		return HISI_DMA_HIP08_CHAN_NUM;
+
+	return HISI_DMA_HIP09_CHAN_NUM;
+}
+
+static u32 hisi_dma_get_msi_num(struct pci_dev *pdev)
+{
+	if (pdev->revision == HISI_DMA_REVISION_HIP08B)
+		return HISI_DMA_HIP08_MSI_NUM;
+
+	return HISI_DMA_HIP09_MSI_NUM;
+}
+
+static u32 hisi_dma_get_queue_base(struct pci_dev *pdev)
+{
+	if (pdev->revision == HISI_DMA_REVISION_HIP08B)
+		return HISI_DMA_HIP08_Q_BASE;
+
+	return HISI_DMA_HIP09_Q_BASE;
+}
+
+static inline struct hisi_dma_chan *to_hisi_dma_chan(struct dma_chan *c)
+{
+	return container_of(c, struct hisi_dma_chan, vc.chan);
+}
+
+static inline struct hisi_dma_desc *to_hisi_dma_desc(struct virt_dma_desc *vd)
+{
+	return container_of(vd, struct hisi_dma_desc, vd);
+}
+
+static inline void hisi_dma_chan_write(void __iomem *base, u32 reg, u32 index,
+				       u32 val)
+{
+	writel_relaxed(val, base + reg + index * HISI_DMA_Q_OFFSET);
+}
+
+static inline void hisi_dma_update_bit(void __iomem *addr, u32 pos, bool val)
+{
+	u32 tmp;
+
+	tmp = readl_relaxed(addr);
+	tmp = val ? tmp | pos : tmp & ~pos;
+	writel_relaxed(tmp, addr);
+}
+
+static void hisi_dma_pause_dma(struct hisi_dma_dev *hdma_dev, u32 index,
+			       bool pause)
+{
+	void __iomem *addr;
+
+	addr = hdma_dev->queue_base + HISI_DMA_Q_CTRL0 +
+	       index * HISI_DMA_Q_OFFSET;
+	hisi_dma_update_bit(addr, HISI_DMA_Q_CTRL0_QUEUE_PAUSE, pause);
+}
+
+static void hisi_dma_enable_dma(struct hisi_dma_dev *hdma_dev, u32 index,
+				bool enable)
+{
+	void __iomem *addr;
+
+	addr = hdma_dev->queue_base + HISI_DMA_Q_CTRL0 +
+	       index * HISI_DMA_Q_OFFSET;
+	hisi_dma_update_bit(addr, HISI_DMA_Q_CTRL0_QUEUE_EN, enable);
+}
+
+static void hisi_dma_mask_irq(struct hisi_dma_dev *hdma_dev, u32 qp_index)
+{
+	void __iomem *q_base = hdma_dev->queue_base;
+
+	if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08)
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_INT_MSK,
+				    qp_index, HISI_DMA_HIP08_Q_INT_STS_MASK);
+	else {
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_INT_MSK,
+				    qp_index, HISI_DMA_HIP09_Q_INT_STS_MASK);
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_ERR_INT_MSK,
+				    qp_index,
+				    HISI_DMA_HIP09_Q_ERR_INT_STS_MASK);
+	}
+}
+
+static void hisi_dma_unmask_irq(struct hisi_dma_dev *hdma_dev, u32 qp_index)
+{
+	void __iomem *q_base = hdma_dev->queue_base;
+
+	if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08) {
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_INT_STS,
+				    qp_index, HISI_DMA_HIP08_Q_INT_STS_MASK);
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_INT_MSK,
+				    qp_index, 0);
+	} else {
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_INT_STS,
+				    qp_index, HISI_DMA_HIP09_Q_INT_STS_MASK);
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_ERR_INT_STS,
+				    qp_index,
+				    HISI_DMA_HIP09_Q_ERR_INT_STS_MASK);
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_INT_MSK,
+				    qp_index, 0);
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_ERR_INT_MSK,
+				    qp_index, 0);
+	}
+}
+
+static void hisi_dma_do_reset(struct hisi_dma_dev *hdma_dev, u32 index)
+{
+	void __iomem *addr;
+
+	addr = hdma_dev->queue_base +
+	       HISI_DMA_Q_CTRL1 + index * HISI_DMA_Q_OFFSET;
+	hisi_dma_update_bit(addr, HISI_DMA_Q_CTRL1_QUEUE_RESET, 1);
+}
+
+static void hisi_dma_reset_qp_point(struct hisi_dma_dev *hdma_dev, u32 index)
+{
+	void __iomem *q_base = hdma_dev->queue_base;
+
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_TAIL_PTR, index, 0);
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_HEAD_PTR, index, 0);
+}
+
+static void hisi_dma_reset_or_disable_hw_chan(struct hisi_dma_chan *chan,
+					      bool disable)
+{
+	struct hisi_dma_dev *hdma_dev = chan->hdma_dev;
+	u32 index = chan->qp_num, tmp;
+	void __iomem *addr;
+	int ret;
+
+	hisi_dma_pause_dma(hdma_dev, index, true);
+	hisi_dma_enable_dma(hdma_dev, index, false);
+	hisi_dma_mask_irq(hdma_dev, index);
+
+	addr = hdma_dev->queue_base +
+	       HISI_DMA_Q_FSM_STS + index * HISI_DMA_Q_OFFSET;
+
+	ret = readl_relaxed_poll_timeout(addr, tmp,
+		FIELD_GET(HISI_DMA_Q_FSM_STS_MASK, tmp) != RUN,
+		HISI_DMA_POLL_Q_STS_DELAY_US, HISI_DMA_POLL_Q_STS_TIME_OUT_US);
+	if (ret) {
+		dev_err(&hdma_dev->pdev->dev, "disable channel timeout!\n");
+		WARN_ON(1);
+	}
+
+	hisi_dma_do_reset(hdma_dev, index);
+	hisi_dma_reset_qp_point(hdma_dev, index);
+	hisi_dma_pause_dma(hdma_dev, index, false);
+
+	if (!disable) {
+		hisi_dma_enable_dma(hdma_dev, index, true);
+		hisi_dma_unmask_irq(hdma_dev, index);
+	}
+
+	ret = readl_relaxed_poll_timeout(addr, tmp,
+		FIELD_GET(HISI_DMA_Q_FSM_STS_MASK, tmp) == IDLE,
+		HISI_DMA_POLL_Q_STS_DELAY_US, HISI_DMA_POLL_Q_STS_TIME_OUT_US);
+	if (ret) {
+		dev_err(&hdma_dev->pdev->dev, "reset channel timeout!\n");
+		WARN_ON(1);
+	}
+}
+
+static void hisi_dma_free_chan_resources(struct dma_chan *c)
+{
+	struct hisi_dma_chan *chan = to_hisi_dma_chan(c);
+	struct hisi_dma_dev *hdma_dev = chan->hdma_dev;
+
+	hisi_dma_reset_or_disable_hw_chan(chan, false);
+	vchan_free_chan_resources(&chan->vc);
+
+	memset(chan->sq, 0, sizeof(struct hisi_dma_sqe) * hdma_dev->chan_depth);
+	memset(chan->cq, 0, sizeof(struct hisi_dma_cqe) * hdma_dev->chan_depth);
+	chan->sq_tail = 0;
+	chan->cq_head = 0;
+	chan->status = DISABLE;
+}
+
+static void hisi_dma_desc_free(struct virt_dma_desc *vd)
+{
+	kfree(to_hisi_dma_desc(vd));
+}
+
+static struct dma_async_tx_descriptor *
+hisi_dma_prep_dma_memcpy(struct dma_chan *c, dma_addr_t dst, dma_addr_t src,
+			 size_t len, unsigned long flags)
+{
+	struct hisi_dma_chan *chan = to_hisi_dma_chan(c);
+	struct hisi_dma_desc *desc;
+
+	desc = kzalloc(sizeof(*desc), GFP_NOWAIT);
+	if (!desc)
+		return NULL;
+
+	desc->sqe.length = cpu_to_le32(len);
+	desc->sqe.src_addr = cpu_to_le64(src);
+	desc->sqe.dst_addr = cpu_to_le64(dst);
+
+	return vchan_tx_prep(&chan->vc, &desc->vd, flags);
+}
+
+static enum dma_status
+hisi_dma_tx_status(struct dma_chan *c, dma_cookie_t cookie,
+		   struct dma_tx_state *txstate)
+{
+	return dma_cookie_status(c, cookie, txstate);
+}
+
+static void hisi_dma_start_transfer(struct hisi_dma_chan *chan)
+{
+	struct hisi_dma_sqe *sqe = chan->sq + chan->sq_tail;
+	struct hisi_dma_dev *hdma_dev = chan->hdma_dev;
+	struct hisi_dma_desc *desc;
+	struct virt_dma_desc *vd;
+
+	vd = vchan_next_desc(&chan->vc);
+	if (!vd) {
+		chan->desc = NULL;
+		return;
+	}
+	list_del(&vd->node);
+	desc = to_hisi_dma_desc(vd);
+	chan->desc = desc;
+
+	memcpy(sqe, &desc->sqe, sizeof(struct hisi_dma_sqe));
+
+	/* update other field in sqe */
+	sqe->dw0 = cpu_to_le32(FIELD_PREP(OPCODE_MASK, OPCODE_M2M));
+	sqe->dw0 |= cpu_to_le32(LOCAL_IRQ_EN);
+
+	/* make sure data has been updated in sqe */
+	wmb();
+
+	/* update sq tail, point to new sqe position */
+	chan->sq_tail = (chan->sq_tail + 1) % hdma_dev->chan_depth;
+
+	/* update sq_tail to trigger a new task */
+	hisi_dma_chan_write(hdma_dev->queue_base, HISI_DMA_Q_SQ_TAIL_PTR,
+			    chan->qp_num, chan->sq_tail);
+}
+
+static void hisi_dma_issue_pending(struct dma_chan *c)
+{
+	struct hisi_dma_chan *chan = to_hisi_dma_chan(c);
+	unsigned long flags;
+
+	spin_lock_irqsave(&chan->vc.lock, flags);
+
+	if (vchan_issue_pending(&chan->vc) && !chan->desc)
+		hisi_dma_start_transfer(chan);
+
+	spin_unlock_irqrestore(&chan->vc.lock, flags);
+}
+
+static int hisi_dma_terminate_all(struct dma_chan *c)
+{
+	struct hisi_dma_chan *chan = to_hisi_dma_chan(c);
+	unsigned long flags;
+	LIST_HEAD(head);
+
+	spin_lock_irqsave(&chan->vc.lock, flags);
+
+	hisi_dma_pause_dma(chan->hdma_dev, chan->qp_num, true);
+	if (chan->desc) {
+		vchan_terminate_vdesc(&chan->desc->vd);
+		chan->desc = NULL;
+	}
+
+	vchan_get_all_descriptors(&chan->vc, &head);
+
+	spin_unlock_irqrestore(&chan->vc.lock, flags);
+
+	vchan_dma_desc_free_list(&chan->vc, &head);
+	hisi_dma_pause_dma(chan->hdma_dev, chan->qp_num, false);
+
+	return 0;
+}
+
+static void hisi_dma_synchronize(struct dma_chan *c)
+{
+	struct hisi_dma_chan *chan = to_hisi_dma_chan(c);
+
+	vchan_synchronize(&chan->vc);
+}
+
+static int hisi_dma_alloc_qps_mem(struct hisi_dma_dev *hdma_dev)
+{
+	size_t sq_size = sizeof(struct hisi_dma_sqe) * hdma_dev->chan_depth;
+	size_t cq_size = sizeof(struct hisi_dma_cqe) * hdma_dev->chan_depth;
+	struct device *dev = &hdma_dev->pdev->dev;
+	struct hisi_dma_chan *chan;
+	int i;
+
+	for (i = 0; i < hdma_dev->chan_num; i++) {
+		chan = &hdma_dev->chan[i];
+		chan->sq = dmam_alloc_coherent(dev, sq_size, &chan->sq_dma,
+					       GFP_KERNEL);
+		if (!chan->sq)
+			return -ENOMEM;
+
+		chan->cq = dmam_alloc_coherent(dev, cq_size, &chan->cq_dma,
+					       GFP_KERNEL);
+		if (!chan->cq)
+			return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void hisi_dma_init_hw_qp(struct hisi_dma_dev *hdma_dev, u32 index)
+{
+	struct hisi_dma_chan *chan = &hdma_dev->chan[index];
+	void __iomem *q_base = hdma_dev->queue_base;
+	u32 hw_depth = hdma_dev->chan_depth - 1;
+	void __iomem *addr;
+	u32 tmp;
+
+	/* set sq, cq base */
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_BASE_L, index,
+			    lower_32_bits(chan->sq_dma));
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_BASE_H, index,
+			    upper_32_bits(chan->sq_dma));
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_BASE_L, index,
+			    lower_32_bits(chan->cq_dma));
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_BASE_H, index,
+			    upper_32_bits(chan->cq_dma));
+
+	/* set sq, cq depth */
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_DEPTH, index, hw_depth);
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_DEPTH, index, hw_depth);
+
+	/* init sq tail and cq head */
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_TAIL_PTR, index, 0);
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_HEAD_PTR, index, 0);
+
+	/* init error interrupt stats */
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_ERR_INT_NUM0, index, 0);
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_ERR_INT_NUM1, index, 0);
+	hisi_dma_chan_write(q_base, HISI_DMA_Q_ERR_INT_NUM2, index, 0);
+
+	if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08) {
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_ERR_INT_NUM3,
+				    index, 0);
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_ERR_INT_NUM4,
+				    index, 0);
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_ERR_INT_NUM5,
+				    index, 0);
+		hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_ERR_INT_NUM6,
+				    index, 0);
+		/*
+		 * init SQ/CQ direction selecting register.
+		 * "0" is to local side and "1" is to remote side.
+		 */
+		addr = q_base + HISI_DMA_Q_CTRL0 + index * HISI_DMA_Q_OFFSET;
+		hisi_dma_update_bit(addr, HISI_DMA_HIP08_Q_CTRL0_SQCQ_DRCT, 0);
+
+		/*
+		 * 0 - Continue to next descriptor if error occurs.
+		 * 1 - Abort the DMA queue if error occurs.
+		 */
+		hisi_dma_update_bit(addr,
+				    HISI_DMA_HIP08_Q_CTRL0_ERR_ABORT_EN, 0);
+	} else {
+		addr = q_base + HISI_DMA_Q_CTRL0 + index * HISI_DMA_Q_OFFSET;
+
+		/*
+		 * init SQ/CQ direction selecting register.
+		 * "0" is to local side and "1" is to remote side.
+		 */
+		hisi_dma_update_bit(addr, HISI_DMA_HIP09_Q_CTRL0_SQ_DRCT, 0);
+		hisi_dma_update_bit(addr, HISI_DMA_HIP09_Q_CTRL0_CQ_DRCT, 0);
+
+		/*
+		 * 0 - Continue to next descriptor if error occurs.
+		 * 1 - Abort the DMA queue if error occurs.
+		 */
+
+		tmp = readl_relaxed(addr);
+		tmp &= ~HISI_DMA_HIP09_Q_CTRL0_ERR_ABORT_EN;
+		writel_relaxed(tmp, addr);
+
+		/*
+		 * 0 - dma should process FLR whith CPU.
+		 * 1 - dma not process FLR, only cpu process FLR.
+		 */
+		addr = q_base + HISI_DMA_HIP09_DMA_FLR_DISABLE +
+		       index * HISI_DMA_Q_OFFSET;
+		hisi_dma_update_bit(addr, HISI_DMA_HIP09_DMA_FLR_DISABLE_B, 0);
+
+		addr = q_base + HISI_DMA_Q_CTRL1 + index * HISI_DMA_Q_OFFSET;
+		hisi_dma_update_bit(addr, HISI_DMA_HIP09_Q_CTRL1_VA_ENABLE, 1);
+	}
+}
+
+static void hisi_dma_enable_qp(struct hisi_dma_dev *hdma_dev, u32 qp_index)
+{
+	hisi_dma_init_hw_qp(hdma_dev, qp_index);
+	hisi_dma_unmask_irq(hdma_dev, qp_index);
+	hisi_dma_enable_dma(hdma_dev, qp_index, true);
+}
+
+static void hisi_dma_disable_qp(struct hisi_dma_dev *hdma_dev, u32 qp_index)
+{
+	hisi_dma_reset_or_disable_hw_chan(&hdma_dev->chan[qp_index], true);
+}
+
+static void hisi_dma_enable_qps(struct hisi_dma_dev *hdma_dev)
+{
+	int i;
+
+	for (i = 0; i < hdma_dev->chan_num; i++) {
+		hdma_dev->chan[i].qp_num = i;
+		hdma_dev->chan[i].hdma_dev = hdma_dev;
+		hdma_dev->chan[i].vc.desc_free = hisi_dma_desc_free;
+		vchan_init(&hdma_dev->chan[i].vc, &hdma_dev->dma_dev);
+		hisi_dma_enable_qp(hdma_dev, i);
+	}
+}
+
+static void hisi_dma_disable_qps(struct hisi_dma_dev *hdma_dev)
+{
+	int i;
+
+	for (i = 0; i < hdma_dev->chan_num; i++) {
+		hisi_dma_disable_qp(hdma_dev, i);
+		tasklet_kill(&hdma_dev->chan[i].vc.task);
+	}
+}
+
+static irqreturn_t hisi_dma_irq(int irq, void *data)
+{
+	struct hisi_dma_chan *chan = data;
+	struct hisi_dma_dev *hdma_dev = chan->hdma_dev;
+	struct hisi_dma_desc *desc;
+	struct hisi_dma_cqe *cqe;
+	void __iomem *q_base;
+
+	spin_lock(&chan->vc.lock);
+
+	desc = chan->desc;
+	cqe = chan->cq + chan->cq_head;
+	q_base = hdma_dev->queue_base;
+	if (desc) {
+		chan->cq_head = (chan->cq_head + 1) % hdma_dev->chan_depth;
+		hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_HEAD_PTR,
+				    chan->qp_num, chan->cq_head);
+		if (FIELD_GET(STATUS_MASK, cqe->w0) == STATUS_SUCC) {
+			vchan_cookie_complete(&desc->vd);
+			hisi_dma_start_transfer(chan);
+		} else {
+			dev_err(&hdma_dev->pdev->dev, "task error!\n");
+		}
+	}
+
+	spin_unlock(&chan->vc.lock);
+
+	return IRQ_HANDLED;
+}
+
+static int hisi_dma_request_qps_irq(struct hisi_dma_dev *hdma_dev)
+{
+	struct pci_dev *pdev = hdma_dev->pdev;
+	int i, ret;
+
+	for (i = 0; i < hdma_dev->chan_num; i++) {
+		ret = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i),
+				       hisi_dma_irq, IRQF_SHARED, "hisi_dma",
+				       &hdma_dev->chan[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+/* This function enables all hw channels in a device */
+static int hisi_dma_enable_hw_channels(struct hisi_dma_dev *hdma_dev)
+{
+	int ret;
+
+	ret = hisi_dma_alloc_qps_mem(hdma_dev);
+	if (ret) {
+		dev_err(&hdma_dev->pdev->dev, "fail to allocate qp memory!\n");
+		return ret;
+	}
+
+	ret = hisi_dma_request_qps_irq(hdma_dev);
+	if (ret) {
+		dev_err(&hdma_dev->pdev->dev, "fail to request qp irq!\n");
+		return ret;
+	}
+
+	hisi_dma_enable_qps(hdma_dev);
+
+	return 0;
+}
+
+static void hisi_dma_disable_hw_channels(void *data)
+{
+	hisi_dma_disable_qps(data);
+}
+
+static void hisi_dma_set_mode(struct hisi_dma_dev *hdma_dev,
+			      enum hisi_dma_mode mode)
+{
+	if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08)
+		writel_relaxed(mode == RC ? 1 : 0,
+			       hdma_dev->base + HISI_DMA_HIP08_MODE);
+}
+
+static void hisi_dma_init_hw(struct hisi_dma_dev *hdma_dev)
+{
+	void __iomem *addr;
+	int i;
+
+	if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP09) {
+		for (i = 0; i < HISI_DMA_HIP09_MAX_PORT_NUM; i++) {
+			addr = hdma_dev->base + HISI_DMA_HIP09_PORT_CFG_REG(i);
+			hisi_dma_update_bit(addr,
+				HISI_DMA_HIP09_PORT_CFG_LINK_DOWN_MASK_B, 1);
+		}
+	}
+}
+
+static void hisi_dma_init_dma_dev(struct hisi_dma_dev *hdma_dev)
+{
+	struct dma_device *dma_dev;
+
+	dma_dev = &hdma_dev->dma_dev;
+	dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask);
+	dma_dev->device_free_chan_resources = hisi_dma_free_chan_resources;
+	dma_dev->device_prep_dma_memcpy = hisi_dma_prep_dma_memcpy;
+	dma_dev->device_tx_status = hisi_dma_tx_status;
+	dma_dev->device_issue_pending = hisi_dma_issue_pending;
+	dma_dev->device_terminate_all = hisi_dma_terminate_all;
+	dma_dev->device_synchronize = hisi_dma_synchronize;
+	dma_dev->directions = BIT(DMA_MEM_TO_MEM);
+	dma_dev->dev = &hdma_dev->pdev->dev;
+	INIT_LIST_HEAD(&dma_dev->channels);
+}
+
+/* --- debugfs implementation --- */
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+static struct debugfs_reg32 *hisi_dma_get_ch_regs(struct hisi_dma_dev *hdma_dev,
+						  u32 *regs_sz)
+{
+	struct device *dev = &hdma_dev->pdev->dev;
+	struct debugfs_reg32 *regs;
+	u32 regs_sz_comm;
+
+	regs_sz_comm = ARRAY_SIZE(hisi_dma_comm_chan_regs);
+
+	if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08)
+		*regs_sz = regs_sz_comm + ARRAY_SIZE(hisi_dma_hip08_chan_regs);
+	else
+		*regs_sz = regs_sz_comm + ARRAY_SIZE(hisi_dma_hip09_chan_regs);
+
+	regs = devm_kcalloc(dev, *regs_sz, sizeof(struct debugfs_reg32),
+			    GFP_KERNEL);
+	if (!regs)
+		return NULL;
+	memcpy(regs, hisi_dma_comm_chan_regs, sizeof(hisi_dma_comm_chan_regs));
+
+	if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08)
+		memcpy(regs + regs_sz_comm, hisi_dma_hip08_chan_regs,
+		       sizeof(hisi_dma_hip08_chan_regs));
+	else
+		memcpy(regs + regs_sz_comm, hisi_dma_hip09_chan_regs,
+		       sizeof(hisi_dma_hip09_chan_regs));
+
+	return regs;
+}
+
+static int hisi_dma_create_chan_dir(struct hisi_dma_dev *hdma_dev)
+{
+	char dir_name[HISI_DMA_MAX_DIR_NAME_LEN];
+	struct debugfs_regset32 *regsets;
+	struct debugfs_reg32 *regs;
+	struct dentry *chan_dir;
+	struct device *dev;
+	u32 regs_sz;
+	int ret;
+	int i;
+
+	dev = &hdma_dev->pdev->dev;
+
+	regsets = devm_kcalloc(dev, hdma_dev->chan_num,
+			       sizeof(*regsets), GFP_KERNEL);
+	if (!regsets)
+		return -ENOMEM;
+
+	regs = hisi_dma_get_ch_regs(hdma_dev, &regs_sz);
+	if (!regs)
+		return -ENOMEM;
+
+	for (i = 0; i < hdma_dev->chan_num; i++) {
+		regsets[i].regs = regs;
+		regsets[i].nregs = regs_sz;
+		regsets[i].base = hdma_dev->queue_base + i * HISI_DMA_Q_OFFSET;
+		regsets[i].dev = dev;
+
+		memset(dir_name, 0, HISI_DMA_MAX_DIR_NAME_LEN);
+		ret = sprintf(dir_name, "channel%d", i);
+		if (ret < 0)
+			return ret;
+
+		chan_dir = debugfs_create_dir(dir_name,
+					      hdma_dev->dma_dev.dbg_dev_root);
+		debugfs_create_regset32("regs", 0444, chan_dir, &regsets[i]);
+	}
+
+	return 0;
+}
+
+static void hisi_dma_create_debugfs(struct hisi_dma_dev *hdma_dev)
+{
+	struct debugfs_regset32 *regset;
+	struct device *dev;
+	int ret;
+
+	dev = &hdma_dev->pdev->dev;
+
+	if (hdma_dev->dma_dev.dbg_dev_root == NULL)
+		return;
+
+	regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
+	if (!regset)
+		return;
+
+	if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08) {
+		regset->regs = hisi_dma_hip08_comm_regs;
+		regset->nregs = ARRAY_SIZE(hisi_dma_hip08_comm_regs);
+	} else {
+		regset->regs = hisi_dma_hip09_comm_regs;
+		regset->nregs = ARRAY_SIZE(hisi_dma_hip09_comm_regs);
+	}
+	regset->base = hdma_dev->base;
+	regset->dev = dev;
+
+	debugfs_create_regset32("regs", 0444,
+				hdma_dev->dma_dev.dbg_dev_root, regset);
+
+	ret = hisi_dma_create_chan_dir(hdma_dev);
+	if (ret < 0)
+		dev_info(&hdma_dev->pdev->dev, "fail to create debugfs for channels!\n");
+}
+#else
+static void hisi_dma_create_debugfs(struct hisi_dma_dev *hdma_dev) { }
+#endif /* CONFIG_DEBUG_FS*/
+/* --- debugfs implementation --- */
+
+static int hisi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	enum hisi_dma_reg_layout reg_layout;
+	struct device *dev = &pdev->dev;
+	struct hisi_dma_dev *hdma_dev;
+	struct dma_device *dma_dev;
+	u32 chan_num;
+	u32 msi_num;
+	int ret;
+
+	reg_layout = hisi_dma_get_reg_layout(pdev);
+	if (reg_layout == HISI_DMA_REG_LAYOUT_INVALID) {
+		dev_err(dev, "unsupported device!\n");
+		return -EINVAL;
+	}
+
+	ret = pcim_enable_device(pdev);
+	if (ret) {
+		dev_err(dev, "failed to enable device mem!\n");
+		return ret;
+	}
+
+	ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_2, pci_name(pdev));
+	if (ret) {
+		dev_err(dev, "failed to remap I/O region!\n");
+		return ret;
+	}
+
+	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (ret)
+		return ret;
+
+	chan_num = hisi_dma_get_chan_num(pdev);
+	hdma_dev = devm_kzalloc(dev, struct_size(hdma_dev, chan, chan_num),
+				GFP_KERNEL);
+	if (!hdma_dev)
+		return -EINVAL;
+
+	hdma_dev->base = pcim_iomap_table(pdev)[PCI_BAR_2];
+	hdma_dev->pdev = pdev;
+	hdma_dev->chan_depth = HISI_DMA_Q_DEPTH_VAL;
+	hdma_dev->chan_num = chan_num;
+	hdma_dev->reg_layout = reg_layout;
+	hdma_dev->queue_base = hdma_dev->base + hisi_dma_get_queue_base(pdev);
+
+	pci_set_drvdata(pdev, hdma_dev);
+	pci_set_master(pdev);
+
+	msi_num = hisi_dma_get_msi_num(pdev);
+
+	/* This will be freed by 'pcim_release()'. See 'pcim_enable_device()' */
+	ret = pci_alloc_irq_vectors(pdev, msi_num, msi_num, PCI_IRQ_MSI);
+	if (ret < 0) {
+		dev_err(dev, "Failed to allocate MSI vectors!\n");
+		return ret;
+	}
+
+	hisi_dma_init_dma_dev(hdma_dev);
+
+	hisi_dma_set_mode(hdma_dev, RC);
+
+	hisi_dma_init_hw(hdma_dev);
+
+	ret = hisi_dma_enable_hw_channels(hdma_dev);
+	if (ret < 0) {
+		dev_err(dev, "failed to enable hw channel!\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(dev, hisi_dma_disable_hw_channels,
+				       hdma_dev);
+	if (ret)
+		return ret;
+
+	dma_dev = &hdma_dev->dma_dev;
+	ret = dmaenginem_async_device_register(dma_dev);
+	if (ret < 0) {
+		dev_err(dev, "failed to register device!\n");
+		return ret;
+	}
+
+	hisi_dma_create_debugfs(hdma_dev);
+
+	return 0;
+}
+
+static const struct pci_device_id hisi_dma_pci_tbl[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, 0xa122) },
+	{ 0, }
+};
+
+static struct pci_driver hisi_dma_pci_driver = {
+	.name		= "hisi_dma",
+	.id_table	= hisi_dma_pci_tbl,
+	.probe		= hisi_dma_probe,
+};
+
+module_pci_driver(hisi_dma_pci_driver);
+
+MODULE_AUTHOR("Zhou Wang <wangzhou1@hisilicon.com>");
+MODULE_AUTHOR("Zhenfa Qiu <qiuzhenfa@hisilicon.com>");
+MODULE_DESCRIPTION("HiSilicon Kunpeng DMA controller driver");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(pci, hisi_dma_pci_tbl);