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, 934 insertions, 0 deletions

diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c
new file mode 100644
index 000000000..f2b7675c7
--- /dev/null
+++ b/drivers/usb/dwc3/debugfs.c
@@ -0,0 +1,934 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * debugfs.c - DesignWare USB3 DRD Controller DebugFS file
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/ptrace.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/delay.h>
+#include <linux/uaccess.h>
+
+#include <linux/usb/ch9.h>
+
+#include "core.h"
+#include "gadget.h"
+#include "io.h"
+#include "debug.h"
+
+#define DWC3_LSP_MUX_UNSELECTED 0xfffff
+
+#define dump_register(nm)				\
+{							\
+	.name	= __stringify(nm),			\
+	.offset	= DWC3_ ##nm,				\
+}
+
+#define dump_ep_register_set(n)			\
+	{					\
+		.name = "DEPCMDPAR2("__stringify(n)")",	\
+		.offset = DWC3_DEP_BASE(n) +	\
+			DWC3_DEPCMDPAR2,	\
+	},					\
+	{					\
+		.name = "DEPCMDPAR1("__stringify(n)")",	\
+		.offset = DWC3_DEP_BASE(n) +	\
+			DWC3_DEPCMDPAR1,	\
+	},					\
+	{					\
+		.name = "DEPCMDPAR0("__stringify(n)")",	\
+		.offset = DWC3_DEP_BASE(n) +	\
+			DWC3_DEPCMDPAR0,	\
+	},					\
+	{					\
+		.name = "DEPCMD("__stringify(n)")",	\
+		.offset = DWC3_DEP_BASE(n) +	\
+			DWC3_DEPCMD,		\
+	}
+
+
+static const struct debugfs_reg32 dwc3_regs[] = {
+	dump_register(GSBUSCFG0),
+	dump_register(GSBUSCFG1),
+	dump_register(GTXTHRCFG),
+	dump_register(GRXTHRCFG),
+	dump_register(GCTL),
+	dump_register(GEVTEN),
+	dump_register(GSTS),
+	dump_register(GUCTL1),
+	dump_register(GSNPSID),
+	dump_register(GGPIO),
+	dump_register(GUID),
+	dump_register(GUCTL),
+	dump_register(GBUSERRADDR0),
+	dump_register(GBUSERRADDR1),
+	dump_register(GPRTBIMAP0),
+	dump_register(GPRTBIMAP1),
+	dump_register(GHWPARAMS0),
+	dump_register(GHWPARAMS1),
+	dump_register(GHWPARAMS2),
+	dump_register(GHWPARAMS3),
+	dump_register(GHWPARAMS4),
+	dump_register(GHWPARAMS5),
+	dump_register(GHWPARAMS6),
+	dump_register(GHWPARAMS7),
+	dump_register(GDBGFIFOSPACE),
+	dump_register(GDBGLTSSM),
+	dump_register(GDBGBMU),
+	dump_register(GPRTBIMAP_HS0),
+	dump_register(GPRTBIMAP_HS1),
+	dump_register(GPRTBIMAP_FS0),
+	dump_register(GPRTBIMAP_FS1),
+
+	dump_register(GUSB2PHYCFG(0)),
+	dump_register(GUSB2PHYCFG(1)),
+	dump_register(GUSB2PHYCFG(2)),
+	dump_register(GUSB2PHYCFG(3)),
+	dump_register(GUSB2PHYCFG(4)),
+	dump_register(GUSB2PHYCFG(5)),
+	dump_register(GUSB2PHYCFG(6)),
+	dump_register(GUSB2PHYCFG(7)),
+	dump_register(GUSB2PHYCFG(8)),
+	dump_register(GUSB2PHYCFG(9)),
+	dump_register(GUSB2PHYCFG(10)),
+	dump_register(GUSB2PHYCFG(11)),
+	dump_register(GUSB2PHYCFG(12)),
+	dump_register(GUSB2PHYCFG(13)),
+	dump_register(GUSB2PHYCFG(14)),
+	dump_register(GUSB2PHYCFG(15)),
+
+	dump_register(GUSB2I2CCTL(0)),
+	dump_register(GUSB2I2CCTL(1)),
+	dump_register(GUSB2I2CCTL(2)),
+	dump_register(GUSB2I2CCTL(3)),
+	dump_register(GUSB2I2CCTL(4)),
+	dump_register(GUSB2I2CCTL(5)),
+	dump_register(GUSB2I2CCTL(6)),
+	dump_register(GUSB2I2CCTL(7)),
+	dump_register(GUSB2I2CCTL(8)),
+	dump_register(GUSB2I2CCTL(9)),
+	dump_register(GUSB2I2CCTL(10)),
+	dump_register(GUSB2I2CCTL(11)),
+	dump_register(GUSB2I2CCTL(12)),
+	dump_register(GUSB2I2CCTL(13)),
+	dump_register(GUSB2I2CCTL(14)),
+	dump_register(GUSB2I2CCTL(15)),
+
+	dump_register(GUSB2PHYACC(0)),
+	dump_register(GUSB2PHYACC(1)),
+	dump_register(GUSB2PHYACC(2)),
+	dump_register(GUSB2PHYACC(3)),
+	dump_register(GUSB2PHYACC(4)),
+	dump_register(GUSB2PHYACC(5)),
+	dump_register(GUSB2PHYACC(6)),
+	dump_register(GUSB2PHYACC(7)),
+	dump_register(GUSB2PHYACC(8)),
+	dump_register(GUSB2PHYACC(9)),
+	dump_register(GUSB2PHYACC(10)),
+	dump_register(GUSB2PHYACC(11)),
+	dump_register(GUSB2PHYACC(12)),
+	dump_register(GUSB2PHYACC(13)),
+	dump_register(GUSB2PHYACC(14)),
+	dump_register(GUSB2PHYACC(15)),
+
+	dump_register(GUSB3PIPECTL(0)),
+	dump_register(GUSB3PIPECTL(1)),
+	dump_register(GUSB3PIPECTL(2)),
+	dump_register(GUSB3PIPECTL(3)),
+	dump_register(GUSB3PIPECTL(4)),
+	dump_register(GUSB3PIPECTL(5)),
+	dump_register(GUSB3PIPECTL(6)),
+	dump_register(GUSB3PIPECTL(7)),
+	dump_register(GUSB3PIPECTL(8)),
+	dump_register(GUSB3PIPECTL(9)),
+	dump_register(GUSB3PIPECTL(10)),
+	dump_register(GUSB3PIPECTL(11)),
+	dump_register(GUSB3PIPECTL(12)),
+	dump_register(GUSB3PIPECTL(13)),
+	dump_register(GUSB3PIPECTL(14)),
+	dump_register(GUSB3PIPECTL(15)),
+
+	dump_register(GTXFIFOSIZ(0)),
+	dump_register(GTXFIFOSIZ(1)),
+	dump_register(GTXFIFOSIZ(2)),
+	dump_register(GTXFIFOSIZ(3)),
+	dump_register(GTXFIFOSIZ(4)),
+	dump_register(GTXFIFOSIZ(5)),
+	dump_register(GTXFIFOSIZ(6)),
+	dump_register(GTXFIFOSIZ(7)),
+	dump_register(GTXFIFOSIZ(8)),
+	dump_register(GTXFIFOSIZ(9)),
+	dump_register(GTXFIFOSIZ(10)),
+	dump_register(GTXFIFOSIZ(11)),
+	dump_register(GTXFIFOSIZ(12)),
+	dump_register(GTXFIFOSIZ(13)),
+	dump_register(GTXFIFOSIZ(14)),
+	dump_register(GTXFIFOSIZ(15)),
+	dump_register(GTXFIFOSIZ(16)),
+	dump_register(GTXFIFOSIZ(17)),
+	dump_register(GTXFIFOSIZ(18)),
+	dump_register(GTXFIFOSIZ(19)),
+	dump_register(GTXFIFOSIZ(20)),
+	dump_register(GTXFIFOSIZ(21)),
+	dump_register(GTXFIFOSIZ(22)),
+	dump_register(GTXFIFOSIZ(23)),
+	dump_register(GTXFIFOSIZ(24)),
+	dump_register(GTXFIFOSIZ(25)),
+	dump_register(GTXFIFOSIZ(26)),
+	dump_register(GTXFIFOSIZ(27)),
+	dump_register(GTXFIFOSIZ(28)),
+	dump_register(GTXFIFOSIZ(29)),
+	dump_register(GTXFIFOSIZ(30)),
+	dump_register(GTXFIFOSIZ(31)),
+
+	dump_register(GRXFIFOSIZ(0)),
+	dump_register(GRXFIFOSIZ(1)),
+	dump_register(GRXFIFOSIZ(2)),
+	dump_register(GRXFIFOSIZ(3)),
+	dump_register(GRXFIFOSIZ(4)),
+	dump_register(GRXFIFOSIZ(5)),
+	dump_register(GRXFIFOSIZ(6)),
+	dump_register(GRXFIFOSIZ(7)),
+	dump_register(GRXFIFOSIZ(8)),
+	dump_register(GRXFIFOSIZ(9)),
+	dump_register(GRXFIFOSIZ(10)),
+	dump_register(GRXFIFOSIZ(11)),
+	dump_register(GRXFIFOSIZ(12)),
+	dump_register(GRXFIFOSIZ(13)),
+	dump_register(GRXFIFOSIZ(14)),
+	dump_register(GRXFIFOSIZ(15)),
+	dump_register(GRXFIFOSIZ(16)),
+	dump_register(GRXFIFOSIZ(17)),
+	dump_register(GRXFIFOSIZ(18)),
+	dump_register(GRXFIFOSIZ(19)),
+	dump_register(GRXFIFOSIZ(20)),
+	dump_register(GRXFIFOSIZ(21)),
+	dump_register(GRXFIFOSIZ(22)),
+	dump_register(GRXFIFOSIZ(23)),
+	dump_register(GRXFIFOSIZ(24)),
+	dump_register(GRXFIFOSIZ(25)),
+	dump_register(GRXFIFOSIZ(26)),
+	dump_register(GRXFIFOSIZ(27)),
+	dump_register(GRXFIFOSIZ(28)),
+	dump_register(GRXFIFOSIZ(29)),
+	dump_register(GRXFIFOSIZ(30)),
+	dump_register(GRXFIFOSIZ(31)),
+
+	dump_register(GEVNTADRLO(0)),
+	dump_register(GEVNTADRHI(0)),
+	dump_register(GEVNTSIZ(0)),
+	dump_register(GEVNTCOUNT(0)),
+
+	dump_register(GHWPARAMS8),
+	dump_register(DCFG),
+	dump_register(DCTL),
+	dump_register(DEVTEN),
+	dump_register(DSTS),
+	dump_register(DGCMDPAR),
+	dump_register(DGCMD),
+	dump_register(DALEPENA),
+
+	dump_ep_register_set(0),
+	dump_ep_register_set(1),
+	dump_ep_register_set(2),
+	dump_ep_register_set(3),
+	dump_ep_register_set(4),
+	dump_ep_register_set(5),
+	dump_ep_register_set(6),
+	dump_ep_register_set(7),
+	dump_ep_register_set(8),
+	dump_ep_register_set(9),
+	dump_ep_register_set(10),
+	dump_ep_register_set(11),
+	dump_ep_register_set(12),
+	dump_ep_register_set(13),
+	dump_ep_register_set(14),
+	dump_ep_register_set(15),
+	dump_ep_register_set(16),
+	dump_ep_register_set(17),
+	dump_ep_register_set(18),
+	dump_ep_register_set(19),
+	dump_ep_register_set(20),
+	dump_ep_register_set(21),
+	dump_ep_register_set(22),
+	dump_ep_register_set(23),
+	dump_ep_register_set(24),
+	dump_ep_register_set(25),
+	dump_ep_register_set(26),
+	dump_ep_register_set(27),
+	dump_ep_register_set(28),
+	dump_ep_register_set(29),
+	dump_ep_register_set(30),
+	dump_ep_register_set(31),
+
+	dump_register(OCFG),
+	dump_register(OCTL),
+	dump_register(OEVT),
+	dump_register(OEVTEN),
+	dump_register(OSTS),
+};
+
+static void dwc3_host_lsp(struct seq_file *s)
+{
+	struct dwc3		*dwc = s->private;
+	bool			dbc_enabled;
+	u32			sel;
+	u32			reg;
+	u32			val;
+
+	dbc_enabled = !!(dwc->hwparams.hwparams1 & DWC3_GHWPARAMS1_ENDBC);
+
+	sel = dwc->dbg_lsp_select;
+	if (sel == DWC3_LSP_MUX_UNSELECTED) {
+		seq_puts(s, "Write LSP selection to print for host\n");
+		return;
+	}
+
+	reg = DWC3_GDBGLSPMUX_HOSTSELECT(sel);
+
+	dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg);
+	val = dwc3_readl(dwc->regs, DWC3_GDBGLSP);
+	seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", sel, val);
+
+	if (dbc_enabled && sel < 256) {
+		reg |= DWC3_GDBGLSPMUX_ENDBC;
+		dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg);
+		val = dwc3_readl(dwc->regs, DWC3_GDBGLSP);
+		seq_printf(s, "GDBGLSP_DBC[%d] = 0x%08x\n", sel, val);
+	}
+}
+
+static void dwc3_gadget_lsp(struct seq_file *s)
+{
+	struct dwc3		*dwc = s->private;
+	int			i;
+	u32			reg;
+
+	for (i = 0; i < 16; i++) {
+		reg = DWC3_GDBGLSPMUX_DEVSELECT(i);
+		dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg);
+		reg = dwc3_readl(dwc->regs, DWC3_GDBGLSP);
+		seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", i, reg);
+	}
+}
+
+static int dwc3_lsp_show(struct seq_file *s, void *unused)
+{
+	struct dwc3		*dwc = s->private;
+	unsigned int		current_mode;
+	unsigned long		flags;
+	u32			reg;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	reg = dwc3_readl(dwc->regs, DWC3_GSTS);
+	current_mode = DWC3_GSTS_CURMOD(reg);
+
+	switch (current_mode) {
+	case DWC3_GSTS_CURMOD_HOST:
+		dwc3_host_lsp(s);
+		break;
+	case DWC3_GSTS_CURMOD_DEVICE:
+		dwc3_gadget_lsp(s);
+		break;
+	default:
+		seq_puts(s, "Mode is unknown, no LSP register printed\n");
+		break;
+	}
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_lsp_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, dwc3_lsp_show, inode->i_private);
+}
+
+static ssize_t dwc3_lsp_write(struct file *file, const char __user *ubuf,
+			      size_t count, loff_t *ppos)
+{
+	struct seq_file		*s = file->private_data;
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	char			buf[32] = { 0 };
+	u32			sel;
+	int			ret;
+
+	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+		return -EFAULT;
+
+	ret = kstrtouint(buf, 0, &sel);
+	if (ret)
+		return ret;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	dwc->dbg_lsp_select = sel;
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return count;
+}
+
+static const struct file_operations dwc3_lsp_fops = {
+	.open			= dwc3_lsp_open,
+	.write			= dwc3_lsp_write,
+	.read			= seq_read,
+	.llseek			= seq_lseek,
+	.release		= single_release,
+};
+
+static int dwc3_mode_show(struct seq_file *s, void *unused)
+{
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	u32			reg;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	reg = dwc3_readl(dwc->regs, DWC3_GCTL);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	switch (DWC3_GCTL_PRTCAP(reg)) {
+	case DWC3_GCTL_PRTCAP_HOST:
+		seq_puts(s, "host\n");
+		break;
+	case DWC3_GCTL_PRTCAP_DEVICE:
+		seq_puts(s, "device\n");
+		break;
+	case DWC3_GCTL_PRTCAP_OTG:
+		seq_puts(s, "otg\n");
+		break;
+	default:
+		seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
+	}
+
+	return 0;
+}
+
+static int dwc3_mode_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, dwc3_mode_show, inode->i_private);
+}
+
+static ssize_t dwc3_mode_write(struct file *file,
+		const char __user *ubuf, size_t count, loff_t *ppos)
+{
+	struct seq_file		*s = file->private_data;
+	struct dwc3		*dwc = s->private;
+	u32			mode = 0;
+	char			buf[32];
+
+	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+		return -EFAULT;
+
+	if (dwc->dr_mode != USB_DR_MODE_OTG)
+		return count;
+
+	if (!strncmp(buf, "host", 4))
+		mode = DWC3_GCTL_PRTCAP_HOST;
+
+	if (!strncmp(buf, "device", 6))
+		mode = DWC3_GCTL_PRTCAP_DEVICE;
+
+	if (!strncmp(buf, "otg", 3))
+		mode = DWC3_GCTL_PRTCAP_OTG;
+
+	dwc3_set_mode(dwc, mode);
+
+	return count;
+}
+
+static const struct file_operations dwc3_mode_fops = {
+	.open			= dwc3_mode_open,
+	.write			= dwc3_mode_write,
+	.read			= seq_read,
+	.llseek			= seq_lseek,
+	.release		= single_release,
+};
+
+static int dwc3_testmode_show(struct seq_file *s, void *unused)
+{
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	u32			reg;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+	reg &= DWC3_DCTL_TSTCTRL_MASK;
+	reg >>= 1;
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	switch (reg) {
+	case 0:
+		seq_puts(s, "no test\n");
+		break;
+	case USB_TEST_J:
+		seq_puts(s, "test_j\n");
+		break;
+	case USB_TEST_K:
+		seq_puts(s, "test_k\n");
+		break;
+	case USB_TEST_SE0_NAK:
+		seq_puts(s, "test_se0_nak\n");
+		break;
+	case USB_TEST_PACKET:
+		seq_puts(s, "test_packet\n");
+		break;
+	case USB_TEST_FORCE_ENABLE:
+		seq_puts(s, "test_force_enable\n");
+		break;
+	default:
+		seq_printf(s, "UNKNOWN %d\n", reg);
+	}
+
+	return 0;
+}
+
+static int dwc3_testmode_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, dwc3_testmode_show, inode->i_private);
+}
+
+static ssize_t dwc3_testmode_write(struct file *file,
+		const char __user *ubuf, size_t count, loff_t *ppos)
+{
+	struct seq_file		*s = file->private_data;
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	u32			testmode = 0;
+	char			buf[32];
+
+	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+		return -EFAULT;
+
+	if (!strncmp(buf, "test_j", 6))
+		testmode = USB_TEST_J;
+	else if (!strncmp(buf, "test_k", 6))
+		testmode = USB_TEST_K;
+	else if (!strncmp(buf, "test_se0_nak", 12))
+		testmode = USB_TEST_SE0_NAK;
+	else if (!strncmp(buf, "test_packet", 11))
+		testmode = USB_TEST_PACKET;
+	else if (!strncmp(buf, "test_force_enable", 17))
+		testmode = USB_TEST_FORCE_ENABLE;
+	else
+		testmode = 0;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	dwc3_gadget_set_test_mode(dwc, testmode);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return count;
+}
+
+static const struct file_operations dwc3_testmode_fops = {
+	.open			= dwc3_testmode_open,
+	.write			= dwc3_testmode_write,
+	.read			= seq_read,
+	.llseek			= seq_lseek,
+	.release		= single_release,
+};
+
+static int dwc3_link_state_show(struct seq_file *s, void *unused)
+{
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	enum dwc3_link_state	state;
+	u32			reg;
+	u8			speed;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	reg = dwc3_readl(dwc->regs, DWC3_GSTS);
+	if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) {
+		seq_puts(s, "Not available\n");
+		spin_unlock_irqrestore(&dwc->lock, flags);
+		return 0;
+	}
+
+	reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+	state = DWC3_DSTS_USBLNKST(reg);
+	speed = reg & DWC3_DSTS_CONNECTSPD;
+
+	seq_printf(s, "%s\n", (speed >= DWC3_DSTS_SUPERSPEED) ?
+		   dwc3_gadget_link_string(state) :
+		   dwc3_gadget_hs_link_string(state));
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_link_state_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, dwc3_link_state_show, inode->i_private);
+}
+
+static ssize_t dwc3_link_state_write(struct file *file,
+		const char __user *ubuf, size_t count, loff_t *ppos)
+{
+	struct seq_file		*s = file->private_data;
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	enum dwc3_link_state	state = 0;
+	char			buf[32];
+	u32			reg;
+	u8			speed;
+
+	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+		return -EFAULT;
+
+	if (!strncmp(buf, "SS.Disabled", 11))
+		state = DWC3_LINK_STATE_SS_DIS;
+	else if (!strncmp(buf, "Rx.Detect", 9))
+		state = DWC3_LINK_STATE_RX_DET;
+	else if (!strncmp(buf, "SS.Inactive", 11))
+		state = DWC3_LINK_STATE_SS_INACT;
+	else if (!strncmp(buf, "Recovery", 8))
+		state = DWC3_LINK_STATE_RECOV;
+	else if (!strncmp(buf, "Compliance", 10))
+		state = DWC3_LINK_STATE_CMPLY;
+	else if (!strncmp(buf, "Loopback", 8))
+		state = DWC3_LINK_STATE_LPBK;
+	else
+		return -EINVAL;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	reg = dwc3_readl(dwc->regs, DWC3_GSTS);
+	if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) {
+		spin_unlock_irqrestore(&dwc->lock, flags);
+		return -EINVAL;
+	}
+
+	reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+	speed = reg & DWC3_DSTS_CONNECTSPD;
+
+	if (speed < DWC3_DSTS_SUPERSPEED &&
+	    state != DWC3_LINK_STATE_RECOV) {
+		spin_unlock_irqrestore(&dwc->lock, flags);
+		return -EINVAL;
+	}
+
+	dwc3_gadget_set_link_state(dwc, state);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return count;
+}
+
+static const struct file_operations dwc3_link_state_fops = {
+	.open			= dwc3_link_state_open,
+	.write			= dwc3_link_state_write,
+	.read			= seq_read,
+	.llseek			= seq_lseek,
+	.release		= single_release,
+};
+
+struct dwc3_ep_file_map {
+	const char name[25];
+	const struct file_operations *const fops;
+};
+
+static int dwc3_tx_fifo_size_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	u32			mdwidth;
+	u32			val;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	val = dwc3_core_fifo_space(dep, DWC3_TXFIFO);
+
+	/* Convert to bytes */
+	mdwidth = dwc3_mdwidth(dwc);
+
+	val *= mdwidth;
+	val >>= 3;
+	seq_printf(s, "%u\n", val);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_rx_fifo_size_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	u32			mdwidth;
+	u32			val;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	val = dwc3_core_fifo_space(dep, DWC3_RXFIFO);
+
+	/* Convert to bytes */
+	mdwidth = dwc3_mdwidth(dwc);
+
+	val *= mdwidth;
+	val >>= 3;
+	seq_printf(s, "%u\n", val);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	u32			val;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
+	seq_printf(s, "%u\n", val);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	u32			val;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	val = dwc3_core_fifo_space(dep, DWC3_RXREQQ);
+	seq_printf(s, "%u\n", val);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	u32			val;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ);
+	seq_printf(s, "%u\n", val);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	u32			val;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ);
+	seq_printf(s, "%u\n", val);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_event_queue_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	u32			val;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	val = dwc3_core_fifo_space(dep, DWC3_EVENTQ);
+	seq_printf(s, "%u\n", val);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_transfer_type_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	if (!(dep->flags & DWC3_EP_ENABLED) || !dep->endpoint.desc) {
+		seq_puts(s, "--\n");
+		goto out;
+	}
+
+	switch (usb_endpoint_type(dep->endpoint.desc)) {
+	case USB_ENDPOINT_XFER_CONTROL:
+		seq_puts(s, "control\n");
+		break;
+	case USB_ENDPOINT_XFER_ISOC:
+		seq_puts(s, "isochronous\n");
+		break;
+	case USB_ENDPOINT_XFER_BULK:
+		seq_puts(s, "bulk\n");
+		break;
+	case USB_ENDPOINT_XFER_INT:
+		seq_puts(s, "interrupt\n");
+		break;
+	default:
+		seq_puts(s, "--\n");
+	}
+
+out:
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_trb_ring_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	int			i;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	if (dep->number <= 1) {
+		seq_puts(s, "--\n");
+		goto out;
+	}
+
+	seq_puts(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
+
+	for (i = 0; i < DWC3_TRB_NUM; i++) {
+		struct dwc3_trb *trb = &dep->trb_pool[i];
+		unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl);
+
+		seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d       %c%c\n",
+				trb->bph, trb->bpl, trb->size,
+				dwc3_trb_type_string(type),
+				!!(trb->ctrl & DWC3_TRB_CTRL_IOC),
+				!!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI),
+				!!(trb->ctrl & DWC3_TRB_CTRL_CSP),
+				!!(trb->ctrl & DWC3_TRB_CTRL_CHN),
+				!!(trb->ctrl & DWC3_TRB_CTRL_LST),
+				!!(trb->ctrl & DWC3_TRB_CTRL_HWO),
+				dep->trb_enqueue == i ? 'E' : ' ',
+				dep->trb_dequeue == i ? 'D' : ' ');
+	}
+
+out:
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+static int dwc3_ep_info_register_show(struct seq_file *s, void *unused)
+{
+	struct dwc3_ep		*dep = s->private;
+	struct dwc3		*dwc = dep->dwc;
+	unsigned long		flags;
+	u64			ep_info;
+	u32			lower_32_bits;
+	u32			upper_32_bits;
+	u32			reg;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	reg = DWC3_GDBGLSPMUX_EPSELECT(dep->number);
+	dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg);
+
+	lower_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO0);
+	upper_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO1);
+
+	ep_info = ((u64)upper_32_bits << 32) | lower_32_bits;
+	seq_printf(s, "0x%016llx\n", ep_info);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_size);
+DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_size);
+DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue);
+DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue);
+DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue);
+DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue);
+DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue);
+DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type);
+DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring);
+DEFINE_SHOW_ATTRIBUTE(dwc3_ep_info_register);
+
+static const struct dwc3_ep_file_map dwc3_ep_file_map[] = {
+	{ "tx_fifo_size", &dwc3_tx_fifo_size_fops, },
+	{ "rx_fifo_size", &dwc3_rx_fifo_size_fops, },
+	{ "tx_request_queue", &dwc3_tx_request_queue_fops, },
+	{ "rx_request_queue", &dwc3_rx_request_queue_fops, },
+	{ "rx_info_queue", &dwc3_rx_info_queue_fops, },
+	{ "descriptor_fetch_queue", &dwc3_descriptor_fetch_queue_fops, },
+	{ "event_queue", &dwc3_event_queue_fops, },
+	{ "transfer_type", &dwc3_transfer_type_fops, },
+	{ "trb_ring", &dwc3_trb_ring_fops, },
+	{ "GDBGEPINFO", &dwc3_ep_info_register_fops, },
+};
+
+static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep,
+		struct dentry *parent)
+{
+	int			i;
+
+	for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) {
+		const struct file_operations *fops = dwc3_ep_file_map[i].fops;
+		const char *name = dwc3_ep_file_map[i].name;
+
+		debugfs_create_file(name, 0444, parent, dep, fops);
+	}
+}
+
+void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep)
+{
+	struct dentry		*dir;
+	struct dentry		*root;
+
+	root = debugfs_lookup(dev_name(dep->dwc->dev), usb_debug_root);
+	dir = debugfs_create_dir(dep->name, root);
+	dwc3_debugfs_create_endpoint_files(dep, dir);
+}
+
+void dwc3_debugfs_init(struct dwc3 *dwc)
+{
+	struct dentry		*root;
+
+	dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
+	if (!dwc->regset)
+		return;
+
+	dwc->dbg_lsp_select = DWC3_LSP_MUX_UNSELECTED;
+
+	dwc->regset->regs = dwc3_regs;
+	dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
+	dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
+
+	root = debugfs_create_dir(dev_name(dwc->dev), usb_debug_root);
+	debugfs_create_regset32("regdump", 0444, root, dwc->regset);
+	debugfs_create_file("lsp_dump", 0644, root, dwc, &dwc3_lsp_fops);
+
+	if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE))
+		debugfs_create_file("mode", 0644, root, dwc,
+				    &dwc3_mode_fops);
+
+	if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
+			IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
+		debugfs_create_file("testmode", 0644, root, dwc,
+				&dwc3_testmode_fops);
+		debugfs_create_file("link_state", 0644, root, dwc,
+				    &dwc3_link_state_fops);
+	}
+}
+
+void dwc3_debugfs_exit(struct dwc3 *dwc)
+{
+	debugfs_remove(debugfs_lookup(dev_name(dwc->dev), usb_debug_root));
+	kfree(dwc->regset);
+}