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, 1105 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
new file mode 100644
index 000000000..4b41160e5
--- /dev/null
+++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -0,0 +1,1105 @@
+/*
+ * Copyright (c) 2007-2008 Bruno Randolf <bruno@thinktube.com>
+ *
+ *  This file is free software: you may copy, redistribute and/or modify it
+ *  under the terms of the GNU General Public License as published by the
+ *  Free Software Foundation, either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ *  This file is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
+ * Copyright (c) 2004-2005 Atheros Communications, Inc.
+ * Copyright (c) 2006 Devicescape Software, Inc.
+ * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com>
+ * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ *    redistribution must be conditioned upon including a substantially
+ *    similar Disclaimer requirement for further binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
+ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/export.h>
+#include <linux/moduleparam.h>
+#include <linux/vmalloc.h>
+
+#include <linux/seq_file.h>
+#include <linux/list.h>
+#include "debug.h"
+#include "ath5k.h"
+#include "reg.h"
+#include "base.h"
+
+static unsigned int ath5k_debug;
+module_param_named(debug, ath5k_debug, uint, 0);
+
+
+/* debugfs: registers */
+
+struct reg {
+	const char *name;
+	int addr;
+};
+
+#define REG_STRUCT_INIT(r) { #r, r }
+
+/* just a few random registers, might want to add more */
+static const struct reg regs[] = {
+	REG_STRUCT_INIT(AR5K_CR),
+	REG_STRUCT_INIT(AR5K_RXDP),
+	REG_STRUCT_INIT(AR5K_CFG),
+	REG_STRUCT_INIT(AR5K_IER),
+	REG_STRUCT_INIT(AR5K_BCR),
+	REG_STRUCT_INIT(AR5K_RTSD0),
+	REG_STRUCT_INIT(AR5K_RTSD1),
+	REG_STRUCT_INIT(AR5K_TXCFG),
+	REG_STRUCT_INIT(AR5K_RXCFG),
+	REG_STRUCT_INIT(AR5K_RXJLA),
+	REG_STRUCT_INIT(AR5K_MIBC),
+	REG_STRUCT_INIT(AR5K_TOPS),
+	REG_STRUCT_INIT(AR5K_RXNOFRM),
+	REG_STRUCT_INIT(AR5K_TXNOFRM),
+	REG_STRUCT_INIT(AR5K_RPGTO),
+	REG_STRUCT_INIT(AR5K_RFCNT),
+	REG_STRUCT_INIT(AR5K_MISC),
+	REG_STRUCT_INIT(AR5K_QCUDCU_CLKGT),
+	REG_STRUCT_INIT(AR5K_ISR),
+	REG_STRUCT_INIT(AR5K_PISR),
+	REG_STRUCT_INIT(AR5K_SISR0),
+	REG_STRUCT_INIT(AR5K_SISR1),
+	REG_STRUCT_INIT(AR5K_SISR2),
+	REG_STRUCT_INIT(AR5K_SISR3),
+	REG_STRUCT_INIT(AR5K_SISR4),
+	REG_STRUCT_INIT(AR5K_IMR),
+	REG_STRUCT_INIT(AR5K_PIMR),
+	REG_STRUCT_INIT(AR5K_SIMR0),
+	REG_STRUCT_INIT(AR5K_SIMR1),
+	REG_STRUCT_INIT(AR5K_SIMR2),
+	REG_STRUCT_INIT(AR5K_SIMR3),
+	REG_STRUCT_INIT(AR5K_SIMR4),
+	REG_STRUCT_INIT(AR5K_DCM_ADDR),
+	REG_STRUCT_INIT(AR5K_DCCFG),
+	REG_STRUCT_INIT(AR5K_CCFG),
+	REG_STRUCT_INIT(AR5K_CPC0),
+	REG_STRUCT_INIT(AR5K_CPC1),
+	REG_STRUCT_INIT(AR5K_CPC2),
+	REG_STRUCT_INIT(AR5K_CPC3),
+	REG_STRUCT_INIT(AR5K_CPCOVF),
+	REG_STRUCT_INIT(AR5K_RESET_CTL),
+	REG_STRUCT_INIT(AR5K_SLEEP_CTL),
+	REG_STRUCT_INIT(AR5K_INTPEND),
+	REG_STRUCT_INIT(AR5K_SFR),
+	REG_STRUCT_INIT(AR5K_PCICFG),
+	REG_STRUCT_INIT(AR5K_GPIOCR),
+	REG_STRUCT_INIT(AR5K_GPIODO),
+	REG_STRUCT_INIT(AR5K_SREV),
+};
+
+static void *reg_start(struct seq_file *seq, loff_t *pos)
+{
+	return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
+}
+
+static void reg_stop(struct seq_file *seq, void *p)
+{
+	/* nothing to do */
+}
+
+static void *reg_next(struct seq_file *seq, void *p, loff_t *pos)
+{
+	++*pos;
+	return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
+}
+
+static int reg_show(struct seq_file *seq, void *p)
+{
+	struct ath5k_hw *ah = seq->private;
+	struct reg *r = p;
+	seq_printf(seq, "%-25s0x%08x\n", r->name,
+		ath5k_hw_reg_read(ah, r->addr));
+	return 0;
+}
+
+static const struct seq_operations registers_sops = {
+	.start = reg_start,
+	.next  = reg_next,
+	.stop  = reg_stop,
+	.show  = reg_show
+};
+
+DEFINE_SEQ_ATTRIBUTE(registers);
+
+/* debugfs: beacons */
+
+static ssize_t read_file_beacon(struct file *file, char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	char buf[500];
+	unsigned int len = 0;
+	unsigned int v;
+	u64 tsf;
+
+	v = ath5k_hw_reg_read(ah, AR5K_BEACON);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"%-24s0x%08x\tintval: %d\tTIM: 0x%x\n",
+		"AR5K_BEACON", v, v & AR5K_BEACON_PERIOD,
+		(v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S);
+
+	len += scnprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\n",
+		"AR5K_LAST_TSTP", ath5k_hw_reg_read(ah, AR5K_LAST_TSTP));
+
+	len += scnprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\n\n",
+		"AR5K_BEACON_CNT", ath5k_hw_reg_read(ah, AR5K_BEACON_CNT));
+
+	v = ath5k_hw_reg_read(ah, AR5K_TIMER0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
+		"AR5K_TIMER0 (TBTT)", v, v);
+
+	v = ath5k_hw_reg_read(ah, AR5K_TIMER1);
+	len += scnprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
+		"AR5K_TIMER1 (DMA)", v, v >> 3);
+
+	v = ath5k_hw_reg_read(ah, AR5K_TIMER2);
+	len += scnprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
+		"AR5K_TIMER2 (SWBA)", v, v >> 3);
+
+	v = ath5k_hw_reg_read(ah, AR5K_TIMER3);
+	len += scnprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
+		"AR5K_TIMER3 (ATIM)", v, v);
+
+	tsf = ath5k_hw_get_tsf64(ah);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"TSF\t\t0x%016llx\tTU: %08x\n",
+		(unsigned long long)tsf, TSF_TO_TU(tsf));
+
+	if (len > sizeof(buf))
+		len = sizeof(buf);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_beacon(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	char buf[20];
+
+	count = min_t(size_t, count, sizeof(buf) - 1);
+	if (copy_from_user(buf, userbuf, count))
+		return -EFAULT;
+
+	buf[count] = '\0';
+	if (strncmp(buf, "disable", 7) == 0) {
+		AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
+		pr_info("debugfs disable beacons\n");
+	} else if (strncmp(buf, "enable", 6) == 0) {
+		AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
+		pr_info("debugfs enable beacons\n");
+	}
+	return count;
+}
+
+static const struct file_operations fops_beacon = {
+	.read = read_file_beacon,
+	.write = write_file_beacon,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
+
+/* debugfs: reset */
+
+static ssize_t write_file_reset(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	ATH5K_DBG(ah, ATH5K_DEBUG_RESET, "debug file triggered reset\n");
+	ieee80211_queue_work(ah->hw, &ah->reset_work);
+	return count;
+}
+
+static const struct file_operations fops_reset = {
+	.write = write_file_reset,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = noop_llseek,
+};
+
+
+/* debugfs: debug level */
+
+static const struct {
+	enum ath5k_debug_level level;
+	const char *name;
+	const char *desc;
+} dbg_info[] = {
+	{ ATH5K_DEBUG_RESET,	"reset",	"reset and initialization" },
+	{ ATH5K_DEBUG_INTR,	"intr",		"interrupt handling" },
+	{ ATH5K_DEBUG_MODE,	"mode",		"mode init/setup" },
+	{ ATH5K_DEBUG_XMIT,	"xmit",		"basic xmit operation" },
+	{ ATH5K_DEBUG_BEACON,	"beacon",	"beacon handling" },
+	{ ATH5K_DEBUG_CALIBRATE, "calib",	"periodic calibration" },
+	{ ATH5K_DEBUG_TXPOWER,	"txpower",	"transmit power setting" },
+	{ ATH5K_DEBUG_LED,	"led",		"LED management" },
+	{ ATH5K_DEBUG_DUMPBANDS, "dumpbands",	"dump bands" },
+	{ ATH5K_DEBUG_DMA,	"dma",		"dma start/stop" },
+	{ ATH5K_DEBUG_ANI,	"ani",		"adaptive noise immunity" },
+	{ ATH5K_DEBUG_DESC,	"desc",		"descriptor chains" },
+	{ ATH5K_DEBUG_ANY,	"all",		"show all debug levels" },
+};
+
+static ssize_t read_file_debug(struct file *file, char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	char buf[700];
+	unsigned int len = 0;
+	unsigned int i;
+
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"DEBUG LEVEL: 0x%08x\n\n", ah->debug.level);
+
+	for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) {
+		len += scnprintf(buf + len, sizeof(buf) - len,
+			"%10s %c 0x%08x - %s\n", dbg_info[i].name,
+			ah->debug.level & dbg_info[i].level ? '+' : ' ',
+			dbg_info[i].level, dbg_info[i].desc);
+	}
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"%10s %c 0x%08x - %s\n", dbg_info[i].name,
+		ah->debug.level == dbg_info[i].level ? '+' : ' ',
+		dbg_info[i].level, dbg_info[i].desc);
+
+	if (len > sizeof(buf))
+		len = sizeof(buf);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_debug(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	unsigned int i;
+	char buf[20];
+
+	count = min_t(size_t, count, sizeof(buf) - 1);
+	if (copy_from_user(buf, userbuf, count))
+		return -EFAULT;
+
+	buf[count] = '\0';
+	for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
+		if (strncmp(buf, dbg_info[i].name,
+					strlen(dbg_info[i].name)) == 0) {
+			ah->debug.level ^= dbg_info[i].level; /* toggle bit */
+			break;
+		}
+	}
+	return count;
+}
+
+static const struct file_operations fops_debug = {
+	.read = read_file_debug,
+	.write = write_file_debug,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
+
+/* debugfs: antenna */
+
+static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	char buf[700];
+	unsigned int len = 0;
+	unsigned int i;
+	unsigned int v;
+
+	len += scnprintf(buf + len, sizeof(buf) - len, "antenna mode\t%d\n",
+		ah->ah_ant_mode);
+	len += scnprintf(buf + len, sizeof(buf) - len, "default antenna\t%d\n",
+		ah->ah_def_ant);
+	len += scnprintf(buf + len, sizeof(buf) - len, "tx antenna\t%d\n",
+		ah->ah_tx_ant);
+
+	len += scnprintf(buf + len, sizeof(buf) - len, "\nANTENNA\t\tRX\tTX\n");
+	for (i = 1; i < ARRAY_SIZE(ah->stats.antenna_rx); i++) {
+		len += scnprintf(buf + len, sizeof(buf) - len,
+			"[antenna %d]\t%d\t%d\n",
+			i, ah->stats.antenna_rx[i], ah->stats.antenna_tx[i]);
+	}
+	len += scnprintf(buf + len, sizeof(buf) - len, "[invalid]\t%d\t%d\n",
+			ah->stats.antenna_rx[0], ah->stats.antenna_tx[0]);
+
+	v = ath5k_hw_reg_read(ah, AR5K_DEFAULT_ANTENNA);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
+
+	v = ath5k_hw_reg_read(ah, AR5K_STA_ID1);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
+		(v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
+		(v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
+		(v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
+		(v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
+
+	v = ath5k_hw_reg_read(ah, AR5K_PHY_AGCCTL);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
+		(v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
+
+	v = ath5k_hw_reg_read(ah, AR5K_PHY_RESTART);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
+		(v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
+
+	v = ath5k_hw_reg_read(ah, AR5K_PHY_FAST_ANT_DIV);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
+		(v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
+
+	v = ath5k_hw_reg_read(ah, AR5K_PHY_ANT_SWITCH_TABLE_0);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"\nAR5K_PHY_ANT_SWITCH_TABLE_0\t0x%08x\n", v);
+	v = ath5k_hw_reg_read(ah, AR5K_PHY_ANT_SWITCH_TABLE_1);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"AR5K_PHY_ANT_SWITCH_TABLE_1\t0x%08x\n", v);
+
+	if (len > sizeof(buf))
+		len = sizeof(buf);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_antenna(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	unsigned int i;
+	char buf[20];
+
+	count = min_t(size_t, count, sizeof(buf) - 1);
+	if (copy_from_user(buf, userbuf, count))
+		return -EFAULT;
+
+	buf[count] = '\0';
+	if (strncmp(buf, "diversity", 9) == 0) {
+		ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT);
+		pr_info("debug: enable diversity\n");
+	} else if (strncmp(buf, "fixed-a", 7) == 0) {
+		ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A);
+		pr_info("debug: fixed antenna A\n");
+	} else if (strncmp(buf, "fixed-b", 7) == 0) {
+		ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B);
+		pr_info("debug: fixed antenna B\n");
+	} else if (strncmp(buf, "clear", 5) == 0) {
+		for (i = 0; i < ARRAY_SIZE(ah->stats.antenna_rx); i++) {
+			ah->stats.antenna_rx[i] = 0;
+			ah->stats.antenna_tx[i] = 0;
+		}
+		pr_info("debug: cleared antenna stats\n");
+	}
+	return count;
+}
+
+static const struct file_operations fops_antenna = {
+	.read = read_file_antenna,
+	.write = write_file_antenna,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
+/* debugfs: misc */
+
+static ssize_t read_file_misc(struct file *file, char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	char buf[700];
+	unsigned int len = 0;
+	u32 filt = ath5k_hw_get_rx_filter(ah);
+
+	len += scnprintf(buf + len, sizeof(buf) - len, "bssid-mask: %pM\n",
+			ah->bssidmask);
+	len += scnprintf(buf + len, sizeof(buf) - len, "filter-flags: 0x%x ",
+			filt);
+	if (filt & AR5K_RX_FILTER_UCAST)
+		len += scnprintf(buf + len, sizeof(buf) - len, " UCAST");
+	if (filt & AR5K_RX_FILTER_MCAST)
+		len += scnprintf(buf + len, sizeof(buf) - len, " MCAST");
+	if (filt & AR5K_RX_FILTER_BCAST)
+		len += scnprintf(buf + len, sizeof(buf) - len, " BCAST");
+	if (filt & AR5K_RX_FILTER_CONTROL)
+		len += scnprintf(buf + len, sizeof(buf) - len, " CONTROL");
+	if (filt & AR5K_RX_FILTER_BEACON)
+		len += scnprintf(buf + len, sizeof(buf) - len, " BEACON");
+	if (filt & AR5K_RX_FILTER_PROM)
+		len += scnprintf(buf + len, sizeof(buf) - len, " PROM");
+	if (filt & AR5K_RX_FILTER_XRPOLL)
+		len += scnprintf(buf + len, sizeof(buf) - len, " XRPOLL");
+	if (filt & AR5K_RX_FILTER_PROBEREQ)
+		len += scnprintf(buf + len, sizeof(buf) - len, " PROBEREQ");
+	if (filt & AR5K_RX_FILTER_PHYERR_5212)
+		len += scnprintf(buf + len, sizeof(buf) - len, " PHYERR-5212");
+	if (filt & AR5K_RX_FILTER_RADARERR_5212)
+		len += scnprintf(buf + len, sizeof(buf) - len, " RADARERR-5212");
+	if (filt & AR5K_RX_FILTER_PHYERR_5211)
+		snprintf(buf + len, sizeof(buf) - len, " PHYERR-5211");
+	if (filt & AR5K_RX_FILTER_RADARERR_5211)
+		len += scnprintf(buf + len, sizeof(buf) - len, " RADARERR-5211");
+
+	len += scnprintf(buf + len, sizeof(buf) - len, "\nopmode: %s (%d)\n",
+			ath_opmode_to_string(ah->opmode), ah->opmode);
+
+	if (len > sizeof(buf))
+		len = sizeof(buf);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_misc = {
+	.read = read_file_misc,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+};
+
+
+/* debugfs: frameerrors */
+
+static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	struct ath5k_statistics *st = &ah->stats;
+	char buf[700];
+	unsigned int len = 0;
+	int i;
+
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"RX\n---------------------\n");
+	len += scnprintf(buf + len, sizeof(buf) - len, "CRC\t%u\t(%u%%)\n",
+			st->rxerr_crc,
+			st->rx_all_count > 0 ?
+				st->rxerr_crc * 100 / st->rx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "PHY\t%u\t(%u%%)\n",
+			st->rxerr_phy,
+			st->rx_all_count > 0 ?
+				st->rxerr_phy * 100 / st->rx_all_count : 0);
+	for (i = 0; i < 32; i++) {
+		if (st->rxerr_phy_code[i])
+			len += scnprintf(buf + len, sizeof(buf) - len,
+				" phy_err[%u]\t%u\n",
+				i, st->rxerr_phy_code[i]);
+	}
+
+	len += scnprintf(buf + len, sizeof(buf) - len, "FIFO\t%u\t(%u%%)\n",
+			st->rxerr_fifo,
+			st->rx_all_count > 0 ?
+				st->rxerr_fifo * 100 / st->rx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "decrypt\t%u\t(%u%%)\n",
+			st->rxerr_decrypt,
+			st->rx_all_count > 0 ?
+				st->rxerr_decrypt * 100 / st->rx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "MIC\t%u\t(%u%%)\n",
+			st->rxerr_mic,
+			st->rx_all_count > 0 ?
+				st->rxerr_mic * 100 / st->rx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "process\t%u\t(%u%%)\n",
+			st->rxerr_proc,
+			st->rx_all_count > 0 ?
+				st->rxerr_proc * 100 / st->rx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "jumbo\t%u\t(%u%%)\n",
+			st->rxerr_jumbo,
+			st->rx_all_count > 0 ?
+				st->rxerr_jumbo * 100 / st->rx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "[RX all\t%u]\n",
+			st->rx_all_count);
+	len += scnprintf(buf + len, sizeof(buf) - len, "RX-all-bytes\t%u\n",
+			st->rx_bytes_count);
+
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"\nTX\n---------------------\n");
+	len += scnprintf(buf + len, sizeof(buf) - len, "retry\t%u\t(%u%%)\n",
+			st->txerr_retry,
+			st->tx_all_count > 0 ?
+				st->txerr_retry * 100 / st->tx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "FIFO\t%u\t(%u%%)\n",
+			st->txerr_fifo,
+			st->tx_all_count > 0 ?
+				st->txerr_fifo * 100 / st->tx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "filter\t%u\t(%u%%)\n",
+			st->txerr_filt,
+			st->tx_all_count > 0 ?
+				st->txerr_filt * 100 / st->tx_all_count : 0);
+	len += scnprintf(buf + len, sizeof(buf) - len, "[TX all\t%u]\n",
+			st->tx_all_count);
+	len += scnprintf(buf + len, sizeof(buf) - len, "TX-all-bytes\t%u\n",
+			st->tx_bytes_count);
+
+	if (len > sizeof(buf))
+		len = sizeof(buf);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_frameerrors(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	struct ath5k_statistics *st = &ah->stats;
+	char buf[20];
+
+	count = min_t(size_t, count, sizeof(buf) - 1);
+	if (copy_from_user(buf, userbuf, count))
+		return -EFAULT;
+
+	buf[count] = '\0';
+	if (strncmp(buf, "clear", 5) == 0) {
+		st->rxerr_crc = 0;
+		st->rxerr_phy = 0;
+		st->rxerr_fifo = 0;
+		st->rxerr_decrypt = 0;
+		st->rxerr_mic = 0;
+		st->rxerr_proc = 0;
+		st->rxerr_jumbo = 0;
+		st->rx_all_count = 0;
+		st->txerr_retry = 0;
+		st->txerr_fifo = 0;
+		st->txerr_filt = 0;
+		st->tx_all_count = 0;
+		pr_info("debug: cleared frameerrors stats\n");
+	}
+	return count;
+}
+
+static const struct file_operations fops_frameerrors = {
+	.read = read_file_frameerrors,
+	.write = write_file_frameerrors,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
+
+/* debugfs: ani */
+
+static ssize_t read_file_ani(struct file *file, char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	struct ath5k_statistics *st = &ah->stats;
+	struct ath5k_ani_state *as = &ah->ani_state;
+
+	char buf[700];
+	unsigned int len = 0;
+
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"HW has PHY error counters:\t%s\n",
+			ah->ah_capabilities.cap_has_phyerr_counters ?
+			"yes" : "no");
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"HW max spur immunity level:\t%d\n",
+			as->max_spur_level);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+		"\nANI state\n--------------------------------------------\n");
+	len += scnprintf(buf + len, sizeof(buf) - len, "operating mode:\t\t\t");
+	switch (as->ani_mode) {
+	case ATH5K_ANI_MODE_OFF:
+		len += scnprintf(buf + len, sizeof(buf) - len, "OFF\n");
+		break;
+	case ATH5K_ANI_MODE_MANUAL_LOW:
+		len += scnprintf(buf + len, sizeof(buf) - len,
+			"MANUAL LOW\n");
+		break;
+	case ATH5K_ANI_MODE_MANUAL_HIGH:
+		len += scnprintf(buf + len, sizeof(buf) - len,
+			"MANUAL HIGH\n");
+		break;
+	case ATH5K_ANI_MODE_AUTO:
+		len += scnprintf(buf + len, sizeof(buf) - len, "AUTO\n");
+		break;
+	default:
+		len += scnprintf(buf + len, sizeof(buf) - len,
+			"??? (not good)\n");
+		break;
+	}
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"noise immunity level:\t\t%d\n",
+			as->noise_imm_level);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"spur immunity level:\t\t%d\n",
+			as->spur_level);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"firstep level:\t\t\t%d\n",
+			as->firstep_level);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"OFDM weak signal detection:\t%s\n",
+			as->ofdm_weak_sig ? "on" : "off");
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"CCK weak signal detection:\t%s\n",
+			as->cck_weak_sig ? "on" : "off");
+
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"\nMIB INTERRUPTS:\t\t%u\n",
+			st->mib_intr);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"beacon RSSI average:\t%d\n",
+			(int)ewma_beacon_rssi_read(&ah->ah_beacon_rssi_avg));
+
+#define CC_PRINT(_struct, _field) \
+	_struct._field, \
+	_struct.cycles > 0 ? \
+	_struct._field * 100 / _struct.cycles : 0
+
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"profcnt tx\t\t%u\t(%d%%)\n",
+			CC_PRINT(as->last_cc, tx_frame));
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"profcnt rx\t\t%u\t(%d%%)\n",
+			CC_PRINT(as->last_cc, rx_frame));
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"profcnt busy\t\t%u\t(%d%%)\n",
+			CC_PRINT(as->last_cc, rx_busy));
+#undef CC_PRINT
+	len += scnprintf(buf + len, sizeof(buf) - len, "profcnt cycles\t\t%u\n",
+			as->last_cc.cycles);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"listen time\t\t%d\tlast: %d\n",
+			as->listen_time, as->last_listen);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"OFDM errors\t\t%u\tlast: %u\tsum: %u\n",
+			as->ofdm_errors, as->last_ofdm_errors,
+			as->sum_ofdm_errors);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"CCK errors\t\t%u\tlast: %u\tsum: %u\n",
+			as->cck_errors, as->last_cck_errors,
+			as->sum_cck_errors);
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"AR5K_PHYERR_CNT1\t%x\t(=%d)\n",
+			ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT1),
+			ATH5K_ANI_OFDM_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
+			ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT1)));
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"AR5K_PHYERR_CNT2\t%x\t(=%d)\n",
+			ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT2),
+			ATH5K_ANI_CCK_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
+			ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT2)));
+
+	if (len > sizeof(buf))
+		len = sizeof(buf);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_ani(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	char buf[20];
+
+	count = min_t(size_t, count, sizeof(buf) - 1);
+	if (copy_from_user(buf, userbuf, count))
+		return -EFAULT;
+
+	buf[count] = '\0';
+	if (strncmp(buf, "sens-low", 8) == 0) {
+		ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_HIGH);
+	} else if (strncmp(buf, "sens-high", 9) == 0) {
+		ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_LOW);
+	} else if (strncmp(buf, "ani-off", 7) == 0) {
+		ath5k_ani_init(ah, ATH5K_ANI_MODE_OFF);
+	} else if (strncmp(buf, "ani-on", 6) == 0) {
+		ath5k_ani_init(ah, ATH5K_ANI_MODE_AUTO);
+	} else if (strncmp(buf, "noise-low", 9) == 0) {
+		ath5k_ani_set_noise_immunity_level(ah, 0);
+	} else if (strncmp(buf, "noise-high", 10) == 0) {
+		ath5k_ani_set_noise_immunity_level(ah,
+						   ATH5K_ANI_MAX_NOISE_IMM_LVL);
+	} else if (strncmp(buf, "spur-low", 8) == 0) {
+		ath5k_ani_set_spur_immunity_level(ah, 0);
+	} else if (strncmp(buf, "spur-high", 9) == 0) {
+		ath5k_ani_set_spur_immunity_level(ah,
+						  ah->ani_state.max_spur_level);
+	} else if (strncmp(buf, "fir-low", 7) == 0) {
+		ath5k_ani_set_firstep_level(ah, 0);
+	} else if (strncmp(buf, "fir-high", 8) == 0) {
+		ath5k_ani_set_firstep_level(ah, ATH5K_ANI_MAX_FIRSTEP_LVL);
+	} else if (strncmp(buf, "ofdm-off", 8) == 0) {
+		ath5k_ani_set_ofdm_weak_signal_detection(ah, false);
+	} else if (strncmp(buf, "ofdm-on", 7) == 0) {
+		ath5k_ani_set_ofdm_weak_signal_detection(ah, true);
+	} else if (strncmp(buf, "cck-off", 7) == 0) {
+		ath5k_ani_set_cck_weak_signal_detection(ah, false);
+	} else if (strncmp(buf, "cck-on", 6) == 0) {
+		ath5k_ani_set_cck_weak_signal_detection(ah, true);
+	}
+	return count;
+}
+
+static const struct file_operations fops_ani = {
+	.read = read_file_ani,
+	.write = write_file_ani,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
+
+/* debugfs: queues etc */
+
+static ssize_t read_file_queue(struct file *file, char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	char buf[700];
+	unsigned int len = 0;
+
+	struct ath5k_txq *txq;
+	struct ath5k_buf *bf, *bf0;
+	int i, n;
+
+	len += scnprintf(buf + len, sizeof(buf) - len,
+			"available txbuffers: %d\n", ah->txbuf_len);
+
+	for (i = 0; i < ARRAY_SIZE(ah->txqs); i++) {
+		txq = &ah->txqs[i];
+
+		len += scnprintf(buf + len, sizeof(buf) - len,
+			"%02d: %ssetup\n", i, txq->setup ? "" : "not ");
+
+		if (!txq->setup)
+			continue;
+
+		n = 0;
+		spin_lock_bh(&txq->lock);
+		list_for_each_entry_safe(bf, bf0, &txq->q, list)
+			n++;
+		spin_unlock_bh(&txq->lock);
+
+		len += scnprintf(buf + len, sizeof(buf) - len,
+				"  len: %d bufs: %d\n", txq->txq_len, n);
+		len += scnprintf(buf + len, sizeof(buf) - len,
+				"  stuck: %d\n", txq->txq_stuck);
+	}
+
+	if (len > sizeof(buf))
+		len = sizeof(buf);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_queue(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct ath5k_hw *ah = file->private_data;
+	char buf[20];
+
+	count = min_t(size_t, count, sizeof(buf) - 1);
+	if (copy_from_user(buf, userbuf, count))
+		return -EFAULT;
+
+	buf[count] = '\0';
+	if (strncmp(buf, "start", 5) == 0)
+		ieee80211_wake_queues(ah->hw);
+	else if (strncmp(buf, "stop", 4) == 0)
+		ieee80211_stop_queues(ah->hw);
+
+	return count;
+}
+
+
+static const struct file_operations fops_queue = {
+	.read = read_file_queue,
+	.write = write_file_queue,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
+/* debugfs: eeprom */
+
+struct eeprom_private {
+	u16 *buf;
+	int len;
+};
+
+static int open_file_eeprom(struct inode *inode, struct file *file)
+{
+	struct eeprom_private *ep;
+	struct ath5k_hw *ah = inode->i_private;
+	bool res;
+	int i, ret;
+	u32 eesize;	/* NB: in 16-bit words */
+	u16 val, *buf;
+
+	/* Get eeprom size */
+
+	res = ath5k_hw_nvram_read(ah, AR5K_EEPROM_SIZE_UPPER, &val);
+	if (!res)
+		return -EACCES;
+
+	if (val == 0) {
+		eesize = AR5K_EEPROM_INFO_MAX + AR5K_EEPROM_INFO_BASE;
+	} else {
+		eesize = (val & AR5K_EEPROM_SIZE_UPPER_MASK) <<
+			AR5K_EEPROM_SIZE_ENDLOC_SHIFT;
+		ath5k_hw_nvram_read(ah, AR5K_EEPROM_SIZE_LOWER, &val);
+		eesize = eesize | val;
+	}
+
+	if (eesize > 4096)
+		return -EINVAL;
+
+	/* Create buffer and read in eeprom */
+
+	buf = vmalloc(array_size(eesize, 2));
+	if (!buf) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	for (i = 0; i < eesize; ++i) {
+		if (!ath5k_hw_nvram_read(ah, i, &val)) {
+			ret = -EIO;
+			goto freebuf;
+		}
+		buf[i] = val;
+	}
+
+	/* Create private struct and assign to file */
+
+	ep = kmalloc(sizeof(*ep), GFP_KERNEL);
+	if (!ep) {
+		ret = -ENOMEM;
+		goto freebuf;
+	}
+
+	ep->buf = buf;
+	ep->len = eesize * 2;
+
+	file->private_data = (void *)ep;
+
+	return 0;
+
+freebuf:
+	vfree(buf);
+err:
+	return ret;
+
+}
+
+static ssize_t read_file_eeprom(struct file *file, char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct eeprom_private *ep = file->private_data;
+
+	return simple_read_from_buffer(user_buf, count, ppos, ep->buf, ep->len);
+}
+
+static int release_file_eeprom(struct inode *inode, struct file *file)
+{
+	struct eeprom_private *ep = file->private_data;
+
+	vfree(ep->buf);
+	kfree(ep);
+
+	return 0;
+}
+
+static const struct file_operations fops_eeprom = {
+	.open = open_file_eeprom,
+	.read = read_file_eeprom,
+	.release = release_file_eeprom,
+	.owner = THIS_MODULE,
+};
+
+
+void
+ath5k_debug_init_device(struct ath5k_hw *ah)
+{
+	struct dentry *phydir;
+
+	ah->debug.level = ath5k_debug;
+
+	phydir = debugfs_create_dir("ath5k", ah->hw->wiphy->debugfsdir);
+	if (!phydir)
+		return;
+
+	debugfs_create_file("debug", 0600, phydir, ah, &fops_debug);
+	debugfs_create_file("registers", 0400, phydir, ah, &registers_fops);
+	debugfs_create_file("beacon", 0600, phydir, ah, &fops_beacon);
+	debugfs_create_file("reset", 0200, phydir, ah, &fops_reset);
+	debugfs_create_file("antenna", 0600, phydir, ah, &fops_antenna);
+	debugfs_create_file("misc", 0400, phydir, ah, &fops_misc);
+	debugfs_create_file("eeprom", 0400, phydir, ah, &fops_eeprom);
+	debugfs_create_file("frameerrors", 0600, phydir, ah, &fops_frameerrors);
+	debugfs_create_file("ani", 0600, phydir, ah, &fops_ani);
+	debugfs_create_file("queue", 0600, phydir, ah, &fops_queue);
+	debugfs_create_bool("32khz_clock", 0600, phydir,
+			    &ah->ah_use_32khz_clock);
+}
+
+/* functions used in other places */
+
+void
+ath5k_debug_dump_bands(struct ath5k_hw *ah)
+{
+	unsigned int b, i;
+
+	if (likely(!(ah->debug.level & ATH5K_DEBUG_DUMPBANDS)))
+		return;
+
+	for (b = 0; b < NUM_NL80211_BANDS; b++) {
+		struct ieee80211_supported_band *band = &ah->sbands[b];
+		char bname[6];
+		switch (band->band) {
+		case NL80211_BAND_2GHZ:
+			strcpy(bname, "2 GHz");
+			break;
+		case NL80211_BAND_5GHZ:
+			strcpy(bname, "5 GHz");
+			break;
+		default:
+			printk(KERN_DEBUG "Band not supported: %d\n",
+				band->band);
+			return;
+		}
+		printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
+				band->n_channels, band->n_bitrates);
+		printk(KERN_DEBUG " channels:\n");
+		for (i = 0; i < band->n_channels; i++)
+			printk(KERN_DEBUG "  %3d %d %.4x %.4x\n",
+					ieee80211_frequency_to_channel(
+						band->channels[i].center_freq),
+					band->channels[i].center_freq,
+					band->channels[i].hw_value,
+					band->channels[i].flags);
+		printk(KERN_DEBUG " rates:\n");
+		for (i = 0; i < band->n_bitrates; i++)
+			printk(KERN_DEBUG "  %4d %.4x %.4x %.4x\n",
+					band->bitrates[i].bitrate,
+					band->bitrates[i].hw_value,
+					band->bitrates[i].flags,
+					band->bitrates[i].hw_value_short);
+	}
+}
+
+static inline void
+ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
+		       struct ath5k_rx_status *rs)
+{
+	struct ath5k_desc *ds = bf->desc;
+	struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
+
+	printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
+		ds, (unsigned long long)bf->daddr,
+		ds->ds_link, ds->ds_data,
+		rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
+		rd->rx_stat.rx_status_0, rd->rx_stat.rx_status_1,
+		!done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
+}
+
+void
+ath5k_debug_printrxbuffs(struct ath5k_hw *ah)
+{
+	struct ath5k_desc *ds;
+	struct ath5k_buf *bf;
+	struct ath5k_rx_status rs = {};
+	int status;
+
+	if (likely(!(ah->debug.level & ATH5K_DEBUG_DESC)))
+		return;
+
+	printk(KERN_DEBUG "rxdp %x, rxlink %p\n",
+		ath5k_hw_get_rxdp(ah), ah->rxlink);
+
+	spin_lock_bh(&ah->rxbuflock);
+	list_for_each_entry(bf, &ah->rxbuf, list) {
+		ds = bf->desc;
+		status = ah->ah_proc_rx_desc(ah, ds, &rs);
+		if (!status)
+			ath5k_debug_printrxbuf(bf, status == 0, &rs);
+	}
+	spin_unlock_bh(&ah->rxbuflock);
+}
+
+void
+ath5k_debug_printtxbuf(struct ath5k_hw *ah, struct ath5k_buf *bf)
+{
+	struct ath5k_desc *ds = bf->desc;
+	struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
+	struct ath5k_tx_status ts = {};
+	int done;
+
+	if (likely(!(ah->debug.level & ATH5K_DEBUG_DESC)))
+		return;
+
+	done = ah->ah_proc_tx_desc(ah, bf->desc, &ts);
+
+	printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
+		"%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
+		ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
+		td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
+		td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
+		done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
+}