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, 363 insertions, 0 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb/espi.c b/drivers/net/ethernet/chelsio/cxgb/espi.c
new file mode 100644
index 000000000..ef7056943
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/cxgb/espi.c
@@ -0,0 +1,363 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*****************************************************************************
+ *                                                                           *
+ * File: espi.c                                                              *
+ * $Revision: 1.14 $                                                         *
+ * $Date: 2005/05/14 00:59:32 $                                              *
+ * Description:                                                              *
+ *  Ethernet SPI functionality.                                              *
+ *  part of the Chelsio 10Gb Ethernet Driver.                                *
+ *                                                                           *
+ *                                                                           *
+ * http://www.chelsio.com                                                    *
+ *                                                                           *
+ * Copyright (c) 2003 - 2005 Chelsio Communications, Inc.                    *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * Maintainers: maintainers@chelsio.com                                      *
+ *                                                                           *
+ * Authors: Dimitrios Michailidis   <dm@chelsio.com>                         *
+ *          Tina Yang               <tainay@chelsio.com>                     *
+ *          Felix Marti             <felix@chelsio.com>                      *
+ *          Scott Bardone           <sbardone@chelsio.com>                   *
+ *          Kurt Ottaway            <kottaway@chelsio.com>                   *
+ *          Frank DiMambro          <frank@chelsio.com>                      *
+ *                                                                           *
+ * History:                                                                  *
+ *                                                                           *
+ ****************************************************************************/
+
+#include "common.h"
+#include "regs.h"
+#include "espi.h"
+
+struct peespi {
+	adapter_t *adapter;
+	struct espi_intr_counts intr_cnt;
+	u32 misc_ctrl;
+	spinlock_t lock;
+};
+
+#define ESPI_INTR_MASK (F_DIP4ERR | F_RXDROP | F_TXDROP | F_RXOVERFLOW | \
+			F_RAMPARITYERR | F_DIP2PARITYERR)
+#define MON_MASK  (V_MONITORED_PORT_NUM(3) | F_MONITORED_DIRECTION \
+		   | F_MONITORED_INTERFACE)
+
+#define TRICN_CNFG 14
+#define TRICN_CMD_READ  0x11
+#define TRICN_CMD_WRITE 0x21
+#define TRICN_CMD_ATTEMPTS 10
+
+static int tricn_write(adapter_t *adapter, int bundle_addr, int module_addr,
+		       int ch_addr, int reg_offset, u32 wr_data)
+{
+	int busy, attempts = TRICN_CMD_ATTEMPTS;
+
+	writel(V_WRITE_DATA(wr_data) |
+	       V_REGISTER_OFFSET(reg_offset) |
+	       V_CHANNEL_ADDR(ch_addr) | V_MODULE_ADDR(module_addr) |
+	       V_BUNDLE_ADDR(bundle_addr) |
+	       V_SPI4_COMMAND(TRICN_CMD_WRITE),
+	       adapter->regs + A_ESPI_CMD_ADDR);
+	writel(0, adapter->regs + A_ESPI_GOSTAT);
+
+	do {
+		busy = readl(adapter->regs + A_ESPI_GOSTAT) & F_ESPI_CMD_BUSY;
+	} while (busy && --attempts);
+
+	if (busy)
+		pr_err("%s: TRICN write timed out\n", adapter->name);
+
+	return busy;
+}
+
+static int tricn_init(adapter_t *adapter)
+{
+	int i, sme = 1;
+
+	if (!(readl(adapter->regs + A_ESPI_RX_RESET)  & F_RX_CLK_STATUS)) {
+		pr_err("%s: ESPI clock not ready\n", adapter->name);
+		return -1;
+	}
+
+	writel(F_ESPI_RX_CORE_RST, adapter->regs + A_ESPI_RX_RESET);
+
+	if (sme) {
+		tricn_write(adapter, 0, 0, 0, TRICN_CNFG, 0x81);
+		tricn_write(adapter, 0, 1, 0, TRICN_CNFG, 0x81);
+		tricn_write(adapter, 0, 2, 0, TRICN_CNFG, 0x81);
+	}
+	for (i = 1; i <= 8; i++)
+		tricn_write(adapter, 0, 0, i, TRICN_CNFG, 0xf1);
+	for (i = 1; i <= 2; i++)
+		tricn_write(adapter, 0, 1, i, TRICN_CNFG, 0xf1);
+	for (i = 1; i <= 3; i++)
+		tricn_write(adapter, 0, 2, i, TRICN_CNFG, 0xe1);
+	tricn_write(adapter, 0, 2, 4, TRICN_CNFG, 0xf1);
+	tricn_write(adapter, 0, 2, 5, TRICN_CNFG, 0xe1);
+	tricn_write(adapter, 0, 2, 6, TRICN_CNFG, 0xf1);
+	tricn_write(adapter, 0, 2, 7, TRICN_CNFG, 0x80);
+	tricn_write(adapter, 0, 2, 8, TRICN_CNFG, 0xf1);
+
+	writel(F_ESPI_RX_CORE_RST | F_ESPI_RX_LNK_RST,
+	       adapter->regs + A_ESPI_RX_RESET);
+
+	return 0;
+}
+
+void t1_espi_intr_enable(struct peespi *espi)
+{
+	u32 enable, pl_intr = readl(espi->adapter->regs + A_PL_ENABLE);
+
+	/*
+	 * Cannot enable ESPI interrupts on T1B because HW asserts the
+	 * interrupt incorrectly, namely the driver gets ESPI interrupts
+	 * but no data is actually dropped (can verify this reading the ESPI
+	 * drop registers).  Also, once the ESPI interrupt is asserted it
+	 * cannot be cleared (HW bug).
+	 */
+	enable = t1_is_T1B(espi->adapter) ? 0 : ESPI_INTR_MASK;
+	writel(enable, espi->adapter->regs + A_ESPI_INTR_ENABLE);
+	writel(pl_intr | F_PL_INTR_ESPI, espi->adapter->regs + A_PL_ENABLE);
+}
+
+void t1_espi_intr_clear(struct peespi *espi)
+{
+	readl(espi->adapter->regs + A_ESPI_DIP2_ERR_COUNT);
+	writel(0xffffffff, espi->adapter->regs + A_ESPI_INTR_STATUS);
+	writel(F_PL_INTR_ESPI, espi->adapter->regs + A_PL_CAUSE);
+}
+
+void t1_espi_intr_disable(struct peespi *espi)
+{
+	u32 pl_intr = readl(espi->adapter->regs + A_PL_ENABLE);
+
+	writel(0, espi->adapter->regs + A_ESPI_INTR_ENABLE);
+	writel(pl_intr & ~F_PL_INTR_ESPI, espi->adapter->regs + A_PL_ENABLE);
+}
+
+int t1_espi_intr_handler(struct peespi *espi)
+{
+	u32 status = readl(espi->adapter->regs + A_ESPI_INTR_STATUS);
+
+	if (status & F_DIP4ERR)
+		espi->intr_cnt.DIP4_err++;
+	if (status & F_RXDROP)
+		espi->intr_cnt.rx_drops++;
+	if (status & F_TXDROP)
+		espi->intr_cnt.tx_drops++;
+	if (status & F_RXOVERFLOW)
+		espi->intr_cnt.rx_ovflw++;
+	if (status & F_RAMPARITYERR)
+		espi->intr_cnt.parity_err++;
+	if (status & F_DIP2PARITYERR) {
+		espi->intr_cnt.DIP2_parity_err++;
+
+		/*
+		 * Must read the error count to clear the interrupt
+		 * that it causes.
+		 */
+		readl(espi->adapter->regs + A_ESPI_DIP2_ERR_COUNT);
+	}
+
+	/*
+	 * For T1B we need to write 1 to clear ESPI interrupts.  For T2+ we
+	 * write the status as is.
+	 */
+	if (status && t1_is_T1B(espi->adapter))
+		status = 1;
+	writel(status, espi->adapter->regs + A_ESPI_INTR_STATUS);
+	return 0;
+}
+
+const struct espi_intr_counts *t1_espi_get_intr_counts(struct peespi *espi)
+{
+	return &espi->intr_cnt;
+}
+
+static void espi_setup_for_pm3393(adapter_t *adapter)
+{
+	u32 wmark = t1_is_T1B(adapter) ? 0x4000 : 0x3200;
+
+	writel(0x1f4, adapter->regs + A_ESPI_SCH_TOKEN0);
+	writel(0x1f4, adapter->regs + A_ESPI_SCH_TOKEN1);
+	writel(0x1f4, adapter->regs + A_ESPI_SCH_TOKEN2);
+	writel(0x1f4, adapter->regs + A_ESPI_SCH_TOKEN3);
+	writel(0x100, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+	writel(wmark, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+	writel(3, adapter->regs + A_ESPI_CALENDAR_LENGTH);
+	writel(0x08000008, adapter->regs + A_ESPI_TRAIN);
+	writel(V_RX_NPORTS(1) | V_TX_NPORTS(1), adapter->regs + A_PORT_CONFIG);
+}
+
+static void espi_setup_for_vsc7321(adapter_t *adapter)
+{
+	writel(0x1f4, adapter->regs + A_ESPI_SCH_TOKEN0);
+	writel(0x1f401f4, adapter->regs + A_ESPI_SCH_TOKEN1);
+	writel(0x1f4, adapter->regs + A_ESPI_SCH_TOKEN2);
+	writel(0xa00, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+	writel(0x1ff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+	writel(1, adapter->regs + A_ESPI_CALENDAR_LENGTH);
+	writel(V_RX_NPORTS(4) | V_TX_NPORTS(4), adapter->regs + A_PORT_CONFIG);
+
+	writel(0x08000008, adapter->regs + A_ESPI_TRAIN);
+}
+
+/*
+ * Note that T1B requires at least 2 ports for IXF1010 due to a HW bug.
+ */
+static void espi_setup_for_ixf1010(adapter_t *adapter, int nports)
+{
+	writel(1, adapter->regs + A_ESPI_CALENDAR_LENGTH);
+	if (nports == 4) {
+		if (is_T2(adapter)) {
+			writel(0xf00, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+			writel(0x3c0, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+		} else {
+			writel(0x7ff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+			writel(0x1ff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+		}
+	} else {
+		writel(0x1fff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+		writel(0x7ff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+	}
+	writel(V_RX_NPORTS(nports) | V_TX_NPORTS(nports), adapter->regs + A_PORT_CONFIG);
+
+}
+
+int t1_espi_init(struct peespi *espi, int mac_type, int nports)
+{
+	u32 status_enable_extra = 0;
+	adapter_t *adapter = espi->adapter;
+
+	/* Disable ESPI training.  MACs that can handle it enable it below. */
+	writel(0, adapter->regs + A_ESPI_TRAIN);
+
+	if (is_T2(adapter)) {
+		writel(V_OUT_OF_SYNC_COUNT(4) |
+		       V_DIP2_PARITY_ERR_THRES(3) |
+		       V_DIP4_THRES(1), adapter->regs + A_ESPI_MISC_CONTROL);
+		writel(nports == 4 ? 0x200040 : 0x1000080,
+		       adapter->regs + A_ESPI_MAXBURST1_MAXBURST2);
+	} else
+		writel(0x800100, adapter->regs + A_ESPI_MAXBURST1_MAXBURST2);
+
+	if (mac_type == CHBT_MAC_PM3393)
+		espi_setup_for_pm3393(adapter);
+	else if (mac_type == CHBT_MAC_VSC7321)
+		espi_setup_for_vsc7321(adapter);
+	else if (mac_type == CHBT_MAC_IXF1010) {
+		status_enable_extra = F_INTEL1010MODE;
+		espi_setup_for_ixf1010(adapter, nports);
+	} else
+		return -1;
+
+	writel(status_enable_extra | F_RXSTATUSENABLE,
+	       adapter->regs + A_ESPI_FIFO_STATUS_ENABLE);
+
+	if (is_T2(adapter)) {
+		tricn_init(adapter);
+		/*
+		 * Always position the control at the 1st port egress IN
+		 * (sop,eop) counter to reduce PIOs for T/N210 workaround.
+		 */
+		espi->misc_ctrl = readl(adapter->regs + A_ESPI_MISC_CONTROL);
+		espi->misc_ctrl &= ~MON_MASK;
+		espi->misc_ctrl |= F_MONITORED_DIRECTION;
+		if (adapter->params.nports == 1)
+			espi->misc_ctrl |= F_MONITORED_INTERFACE;
+		writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
+		spin_lock_init(&espi->lock);
+	}
+
+	return 0;
+}
+
+void t1_espi_destroy(struct peespi *espi)
+{
+	kfree(espi);
+}
+
+struct peespi *t1_espi_create(adapter_t *adapter)
+{
+	struct peespi *espi = kzalloc(sizeof(*espi), GFP_KERNEL);
+
+	if (espi)
+		espi->adapter = adapter;
+	return espi;
+}
+
+#if 0
+void t1_espi_set_misc_ctrl(adapter_t *adapter, u32 val)
+{
+	struct peespi *espi = adapter->espi;
+
+	if (!is_T2(adapter))
+		return;
+	spin_lock(&espi->lock);
+	espi->misc_ctrl = (val & ~MON_MASK) |
+			  (espi->misc_ctrl & MON_MASK);
+	writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
+	spin_unlock(&espi->lock);
+}
+#endif  /*  0  */
+
+u32 t1_espi_get_mon(adapter_t *adapter, u32 addr, u8 wait)
+{
+	struct peespi *espi = adapter->espi;
+	u32 sel;
+
+	if (!is_T2(adapter))
+		return 0;
+
+	sel = V_MONITORED_PORT_NUM((addr & 0x3c) >> 2);
+	if (!wait) {
+		if (!spin_trylock(&espi->lock))
+			return 0;
+	} else
+		spin_lock(&espi->lock);
+
+	if ((sel != (espi->misc_ctrl & MON_MASK))) {
+		writel(((espi->misc_ctrl & ~MON_MASK) | sel),
+		       adapter->regs + A_ESPI_MISC_CONTROL);
+		sel = readl(adapter->regs + A_ESPI_SCH_TOKEN3);
+		writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
+	} else
+		sel = readl(adapter->regs + A_ESPI_SCH_TOKEN3);
+	spin_unlock(&espi->lock);
+	return sel;
+}
+
+/*
+ * This function is for T204 only.
+ * compare with t1_espi_get_mon(), it reads espiInTxSop[0 ~ 3] in
+ * one shot, since there is no per port counter on the out side.
+ */
+int t1_espi_get_mon_t204(adapter_t *adapter, u32 *valp, u8 wait)
+{
+	struct peespi *espi = adapter->espi;
+	u8 i, nport = (u8)adapter->params.nports;
+
+	if (!wait) {
+		if (!spin_trylock(&espi->lock))
+			return -1;
+	} else
+		spin_lock(&espi->lock);
+
+	if ((espi->misc_ctrl & MON_MASK) != F_MONITORED_DIRECTION) {
+		espi->misc_ctrl = (espi->misc_ctrl & ~MON_MASK) |
+					F_MONITORED_DIRECTION;
+		writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
+	}
+	for (i = 0 ; i < nport; i++, valp++) {
+		if (i) {
+			writel(espi->misc_ctrl | V_MONITORED_PORT_NUM(i),
+			       adapter->regs + A_ESPI_MISC_CONTROL);
+		}
+		*valp = readl(adapter->regs + A_ESPI_SCH_TOKEN3);
+	}
+
+	writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
+	spin_unlock(&espi->lock);
+	return 0;
+}