Merge tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextHEADmaster

Pull networking updates from Jakub Kicinski:
 "Not much excitement - a handful of large patchsets (devmem among them)
  did not make it in time.

  Core & protocols:

   - Use local_lock in addition to local_bh_disable() to protect per-CPU
     resources in networking, a step closer for local_bh_disable() not
     to act as a big lock on PREEMPT_RT

   - Use flex array for netdevice priv area, ensure its cache alignment

   - Add a sysctl knob to allow user to specify a default rto_min at
     socket init time. Bit of a big hammer but multiple companies were
     independently carrying such patch downstream so clearly it's useful

   - Support scheduling transmission of packets based on CLOCK_TAI

   - Un-pin TCP TIMEWAIT timer to avoid it firing on CPUs later cordoned
     off using cpusets

   - Support multiple L2TPv3 UDP tunnels using the same 5-tuple address

   - Allow configuration of multipath hash seed, to both allow
     synchronizing hashing of two routers, and preventing partial
     accidental sync

   - Improve TCP compliance with RFC 9293 for simultaneous connect()

   - Support sending NAT keepalives in IPsec ESP in UDP states.
     Userspace IKE daemon had to do this before, but the kernel can
     better keep track of it

   - Support sending supervision HSR frames with MAC addresses stored in
     ProxyNodeTable when RedBox (i.e. HSR-SAN) is enabled

   - Introduce IPPROTO_SMC for selecting SMC when socket is created

   - Allow UDP GSO transmit from devices with no checksum offload

   - openvswitch: add packet sampling via psample, separating the
     sampled traffic from "upcall" packets sent to user space for
     forwarding

   - nf_tables: shrink memory consumption for transaction objects

  Things we sprinkled into general kernel code:

   - Power Sequencing subsystem (used by Qualcomm Bluetooth driver for
     QCA6390)           [ Already merged separately - Linus ]

   - Add IRQ information in sysfs for auxiliary bus

   - Introduce guard definition for local_lock

   - Add aligned flavor of __cacheline_group_{begin, end}() markings for
     grouping fields in structures

  BPF:

   - Notify user space (via epoll) when a struct_ops object is getting
     detached/unregistered

   - Add new kfuncs for a generic, open-coded bits iterator

   - Enable BPF programs to declare arrays of kptr, bpf_rb_root, and
     bpf_list_head

   - Support resilient split BTF which cuts down on duplication and
     makes BTF as compact as possible WRT BTF from modules

   - Add support for dumping kfunc prototypes from BTF which enables
     both detecting as well as dumping compilable prototypes for kfuncs

   - riscv64 BPF JIT improvements in particular to add 12-argument
     support for BPF trampolines and to utilize bpf_prog_pack for the
     latter

   - Add the capability to offload the netfilter flowtable in XDP layer
     through kfuncs

  Driver API:

   - Allow users to configure IRQ tresholds between which automatic IRQ
     moderation can choose

   - Expand Power Sourcing (PoE) status with power, class and failure
     reason. Support setting power limits

   - Track additional RSS contexts in the core, make sure configuration
     changes don't break them

   - Support IPsec crypto offload for IPv6 ESP and IPv4 UDP-encapsulated
     ESP data paths

   - Support updating firmware on SFP modules

  Tests and tooling:

   - mptcp: use net/lib.sh to manage netns

   - TCP-AO and TCP-MD5: replace debug prints used by tests with
     tracepoints

   - openvswitch: make test self-contained (don't depend on OvS CLI
     tools)

  Drivers:

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - increase the max total outstanding PTP TX packets to 4
         - add timestamping statistics support
         - implement netdev_queue_mgmt_ops
         - support new RSS context API
      - Intel (100G, ice, idpf):
         - implement FEC statistics and dumping signal quality indicators
         - support E825C products (with 56Gbps PHYs)
      - nVidia/Mellanox:
         - support HW-GRO
         - mlx4/mlx5: support per-queue statistics via netlink
         - obey the max number of EQs setting in sub-functions
      - AMD/Solarflare:
         - support new RSS context API
      - AMD/Pensando:
         - ionic: rework fix for doorbell miss to lower overhead and
           skip it on new HW
      - Wangxun:
         - txgbe: support Flow Director perfect filters

   - Ethernet NICs consumer, embedded and virtual:
      - Add driver for Tehuti Networks TN40xx chips
      - Add driver for Meta's internal NIC chips
      - Add driver for Ethernet MAC on Airoha EN7581 SoCs
      - Add driver for Renesas Ethernet-TSN devices
      - Google cloud vNIC:
         - flow steering support
      - Microsoft vNIC:
         - support page sizes other than 4KB on ARM64
      - vmware vNIC:
         - support latency measurement (update to version 9)
      - VirtIO net:
         - support for Byte Queue Limits
         - support configuring thresholds for automatic IRQ moderation
         - support for AF_XDP Rx zero-copy
      - Synopsys (stmmac):
         - support for STM32MP13 SoC
         - let platforms select the right PCS implementation
      - TI:
         - icssg-prueth: add multicast filtering support
         - icssg-prueth: enable PTP timestamping and PPS
      - Renesas:
         - ravb: improve Rx performance 30-400% by using page pool,
           theaded NAPI and timer-based IRQ coalescing
         - ravb: add MII support for R-Car V4M
      - Cadence (macb):
         - macb: add ARP support to Wake-On-LAN
      - Cortina:
         - use phylib for RX and TX pause configuration

   - Ethernet switches:
      - nVidia/Mellanox:
         - support configuration of multipath hash seed
         - report more accurate max MTU
         - use page_pool to improve Rx performance
      - MediaTek:
         - mt7530: add support for bridge port isolation
      - Qualcomm:
         - qca8k: add support for bridge port isolation
      - Microchip:
         - lan9371/2: add 100BaseTX PHY support
      - NXP:
         - vsc73xx: implement VLAN operations

   - Ethernet PHYs:
      - aquantia: enable support for aqr115c
      - aquantia: add support for PHY LEDs
      - realtek: add support for rtl8224 2.5Gbps PHY
      - xpcs: add memory-mapped device support
      - add BroadR-Reach link mode and support in Broadcom's PHY driver

   - CAN:
      - add document for ISO 15765-2 protocol support
      - mcp251xfd: workaround for erratum DS80000789E, use timestamps to
        catch when device returns incorrect FIFO status

   - WiFi:
      - mac80211/cfg80211:
         - parse Transmit Power Envelope (TPE) data in mac80211 instead
           of in drivers
         - improvements for 6 GHz regulatory flexibility
         - multi-link improvements
         - support multiple radios per wiphy
         - remove DEAUTH_NEED_MGD_TX_PREP flag
      - Intel (iwlwifi):
         - bump FW API to 91 for BZ/SC devices
         - report 64-bit radiotap timestamp
         - enable P2P low latency by default
         - handle Transmit Power Envelope (TPE) advertised by AP
         - remove support for older FW for new devices
         - fast resume (keeping the device configured)
         - mvm: re-enable Multi-Link Operation (MLO)
         - aggregation (A-MSDU) optimizations
      - MediaTek (mt76):
         - mt7925 Multi-Link Operation (MLO) support
      - Qualcomm (ath10k):
         - LED support for various chipsets
      - Qualcomm (ath12k):
         - remove unsupported Tx monitor handling
         - support channel 2 in 6 GHz band
         - support Spatial Multiplexing Power Save (SMPS) in 6 GHz band
         - supprt multiple BSSID (MBSSID) and Enhanced Multi-BSSID
           Advertisements (EMA)
         - support dynamic VLAN
         - add panic handler for resetting the firmware state
         - DebugFS support for datapath statistics
         - WCN7850: support for Wake on WLAN
      - Microchip (wilc1000):
         - read MAC address during probe to make it visible to user space
         - suspend/resume improvements
      - TI (wl18xx):
         - support newer firmware versions
      - RealTek (rtw89):
         - preparation for RTL8852BE-VT support
         - Wake on WLAN support for WiFi 6 chips
         - 36-bit PCI DMA support
      - RealTek (rtlwifi):
         - RTL8192DU support
      - Broadcom (brcmfmac):
         - Management Frame Protection support (to enable WPA3)

   - Bluetooth:
      - qualcomm: use the power sequencer for QCA6390
      - btusb: mediatek: add ISO data transmission functions
      - hci_bcm4377: add BCM4388 support
      - btintel: add support for BlazarU core
      - btintel: add support for Whale Peak2
      - btnxpuart: add support for AW693 A1 chipset
      - btnxpuart: add support for IW615 chipset
      - btusb: add Realtek RTL8852BE support ID 0x13d3:0x3591"

* tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1589 commits)
  eth: fbnic: Fix spelling mistake "tiggerring" -> "triggering"
  tcp: Replace strncpy() with strscpy()
  wifi: ath12k: fix build vs old compiler
  tcp: Don't access uninit tcp_rsk(req)->ao_keyid in tcp_create_openreq_child().
  eth: fbnic: Write the TCAM tables used for RSS control and Rx to host
  eth: fbnic: Add L2 address programming
  eth: fbnic: Add basic Rx handling
  eth: fbnic: Add basic Tx handling
  eth: fbnic: Add link detection
  eth: fbnic: Add initial messaging to notify FW of our presence
  eth: fbnic: Implement Rx queue alloc/start/stop/free
  eth: fbnic: Implement Tx queue alloc/start/stop/free
  eth: fbnic: Allocate a netdevice and napi vectors with queues
  eth: fbnic: Add FW communication mechanism
  eth: fbnic: Add message parsing for FW messages
  eth: fbnic: Add register init to set PCIe/Ethernet device config
  eth: fbnic: Allocate core device specific structures and devlink interface
  eth: fbnic: Add scaffolding for Meta's NIC driver
  PCI: Add Meta Platforms vendor ID
  net/sched: cls_flower: propagate tca[TCA_OPTIONS] to NL_REQ_ATTR_CHECK
  ...

1 files changed, 666 insertions, 0 deletions

diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_mac.c b/drivers/net/ethernet/meta/fbnic/fbnic_mac.c
new file mode 100644
index 000000000000..7920e7af82d9
--- /dev/null
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_mac.c
@@ -0,0 +1,666 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) Meta Platforms, Inc. and affiliates. */
+
+#include <linux/bitfield.h>
+#include <net/tcp.h>
+
+#include "fbnic.h"
+#include "fbnic_mac.h"
+#include "fbnic_netdev.h"
+
+static void fbnic_init_readrq(struct fbnic_dev *fbd, unsigned int offset,
+			      unsigned int cls, unsigned int readrq)
+{
+	u32 val = rd32(fbd, offset);
+
+	/* The TDF_CTL masks are a superset of the RNI_RBP ones. So we can
+	 * use them when setting either the TDE_CTF or RNI_RBP registers.
+	 */
+	val &= FBNIC_QM_TNI_TDF_CTL_MAX_OT | FBNIC_QM_TNI_TDF_CTL_MAX_OB;
+
+	val |= FIELD_PREP(FBNIC_QM_TNI_TDF_CTL_MRRS, readrq) |
+	       FIELD_PREP(FBNIC_QM_TNI_TDF_CTL_CLS, cls);
+
+	wr32(fbd, offset, val);
+}
+
+static void fbnic_init_mps(struct fbnic_dev *fbd, unsigned int offset,
+			   unsigned int cls, unsigned int mps)
+{
+	u32 val = rd32(fbd, offset);
+
+	/* Currently all MPS masks are identical so just use the first one */
+	val &= ~(FBNIC_QM_TNI_TCM_CTL_MPS | FBNIC_QM_TNI_TCM_CTL_CLS);
+
+	val |= FIELD_PREP(FBNIC_QM_TNI_TCM_CTL_MPS, mps) |
+	       FIELD_PREP(FBNIC_QM_TNI_TCM_CTL_CLS, cls);
+
+	wr32(fbd, offset, val);
+}
+
+static void fbnic_mac_init_axi(struct fbnic_dev *fbd)
+{
+	bool override_1k = false;
+	int readrq, mps, cls;
+
+	/* All of the values are based on being a power of 2 starting
+	 * with 64 == 0. Therefore we can either divide by 64 in the
+	 * case of constants, or just subtract 6 from the log2 of the value
+	 * in order to get the value we will be programming into the
+	 * registers.
+	 */
+	readrq = ilog2(fbd->readrq) - 6;
+	if (readrq > 3)
+		override_1k = true;
+	readrq = clamp(readrq, 0, 3);
+
+	mps = ilog2(fbd->mps) - 6;
+	mps = clamp(mps, 0, 3);
+
+	cls = ilog2(L1_CACHE_BYTES) - 6;
+	cls = clamp(cls, 0, 3);
+
+	/* Configure Tx/Rx AXI Paths w/ Read Request and Max Payload sizes */
+	fbnic_init_readrq(fbd, FBNIC_QM_TNI_TDF_CTL, cls, readrq);
+	fbnic_init_mps(fbd, FBNIC_QM_TNI_TCM_CTL, cls, mps);
+
+	/* Configure QM TNI TDE:
+	 * - Max outstanding AXI beats to 704(768 - 64) - guaranetees 8% of
+	 *   buffer capacity to descriptors.
+	 * - Max outstanding transactions to 128
+	 */
+	wr32(fbd, FBNIC_QM_TNI_TDE_CTL,
+	     FIELD_PREP(FBNIC_QM_TNI_TDE_CTL_MRRS_1K, override_1k ? 1 : 0) |
+	     FIELD_PREP(FBNIC_QM_TNI_TDE_CTL_MAX_OB, 704) |
+	     FIELD_PREP(FBNIC_QM_TNI_TDE_CTL_MAX_OT, 128) |
+	     FIELD_PREP(FBNIC_QM_TNI_TDE_CTL_MRRS, readrq) |
+	     FIELD_PREP(FBNIC_QM_TNI_TDE_CTL_CLS, cls));
+
+	fbnic_init_readrq(fbd, FBNIC_QM_RNI_RBP_CTL, cls, readrq);
+	fbnic_init_mps(fbd, FBNIC_QM_RNI_RDE_CTL, cls, mps);
+	fbnic_init_mps(fbd, FBNIC_QM_RNI_RCM_CTL, cls, mps);
+
+	/* Enable XALI AR/AW outbound */
+	wr32(fbd, FBNIC_PUL_OB_TLP_HDR_AW_CFG,
+	     FBNIC_PUL_OB_TLP_HDR_AW_CFG_BME);
+	wr32(fbd, FBNIC_PUL_OB_TLP_HDR_AR_CFG,
+	     FBNIC_PUL_OB_TLP_HDR_AR_CFG_BME);
+}
+
+static void fbnic_mac_init_qm(struct fbnic_dev *fbd)
+{
+	u32 clock_freq;
+
+	/* Configure TSO behavior */
+	wr32(fbd, FBNIC_QM_TQS_CTL0,
+	     FIELD_PREP(FBNIC_QM_TQS_CTL0_LSO_TS_MASK,
+			FBNIC_QM_TQS_CTL0_LSO_TS_LAST) |
+	     FIELD_PREP(FBNIC_QM_TQS_CTL0_PREFETCH_THRESH,
+			FBNIC_QM_TQS_CTL0_PREFETCH_THRESH_MIN));
+
+	/* Limit EDT to INT_MAX as this is the limit of the EDT Qdisc */
+	wr32(fbd, FBNIC_QM_TQS_EDT_TS_RANGE, INT_MAX);
+
+	/* Configure MTU
+	 * Due to known HW issue we cannot set the MTU to within 16 octets
+	 * of a 64 octet aligned boundary. So we will set the TQS_MTU(s) to
+	 * MTU + 1.
+	 */
+	wr32(fbd, FBNIC_QM_TQS_MTU_CTL0, FBNIC_MAX_JUMBO_FRAME_SIZE + 1);
+	wr32(fbd, FBNIC_QM_TQS_MTU_CTL1,
+	     FIELD_PREP(FBNIC_QM_TQS_MTU_CTL1_BULK,
+			FBNIC_MAX_JUMBO_FRAME_SIZE + 1));
+
+	clock_freq = FBNIC_CLOCK_FREQ;
+
+	/* Be aggressive on the timings. We will have the interrupt
+	 * threshold timer tick once every 1 usec and coalesce writes for
+	 * up to 80 usecs.
+	 */
+	wr32(fbd, FBNIC_QM_TCQ_CTL0,
+	     FIELD_PREP(FBNIC_QM_TCQ_CTL0_TICK_CYCLES,
+			clock_freq / 1000000) |
+	     FIELD_PREP(FBNIC_QM_TCQ_CTL0_COAL_WAIT,
+			clock_freq / 12500));
+
+	/* We will have the interrupt threshold timer tick once every
+	 * 1 usec and coalesce writes for up to 2 usecs.
+	 */
+	wr32(fbd, FBNIC_QM_RCQ_CTL0,
+	     FIELD_PREP(FBNIC_QM_RCQ_CTL0_TICK_CYCLES,
+			clock_freq / 1000000) |
+	     FIELD_PREP(FBNIC_QM_RCQ_CTL0_COAL_WAIT,
+			clock_freq / 500000));
+
+	/* Configure spacer control to 64 beats. */
+	wr32(fbd, FBNIC_FAB_AXI4_AR_SPACER_2_CFG,
+	     FBNIC_FAB_AXI4_AR_SPACER_MASK |
+	     FIELD_PREP(FBNIC_FAB_AXI4_AR_SPACER_THREADSHOLD, 2));
+}
+
+#define FBNIC_DROP_EN_MASK	0x7d
+#define FBNIC_PAUSE_EN_MASK	0x14
+#define FBNIC_ECN_EN_MASK	0x10
+
+struct fbnic_fifo_config {
+	unsigned int addr;
+	unsigned int size;
+};
+
+/* Rx FIFO Configuration
+ * The table consists of 8 entries, of which only 4 are currently used
+ * The starting addr is in units of 64B and the size is in 2KB units
+ * Below is the human readable version of the table defined below:
+ * Function		Addr	Size
+ * ----------------------------------
+ * Network to Host/BMC	384K	64K
+ * Unused
+ * Unused
+ * Network to BMC	448K	32K
+ * Network to Host	0	384K
+ * Unused
+ * BMC to Host		480K	32K
+ * Unused
+ */
+static const struct fbnic_fifo_config fifo_config[] = {
+	{ .addr = 0x1800, .size = 0x20 },	/* Network to Host/BMC */
+	{ },					/* Unused */
+	{ },					/* Unused */
+	{ .addr = 0x1c00, .size = 0x10 },	/* Network to BMC */
+	{ .addr = 0x0000, .size = 0xc0 },	/* Network to Host */
+	{ },					/* Unused */
+	{ .addr = 0x1e00, .size = 0x10 },	/* BMC to Host */
+	{ }					/* Unused */
+};
+
+static void fbnic_mac_init_rxb(struct fbnic_dev *fbd)
+{
+	bool rx_enable;
+	int i;
+
+	rx_enable = !!(rd32(fbd, FBNIC_RPC_RMI_CONFIG) &
+		       FBNIC_RPC_RMI_CONFIG_ENABLE);
+
+	for (i = 0; i < 8; i++) {
+		unsigned int size = fifo_config[i].size;
+
+		/* If we are coming up on a system that already has the
+		 * Rx data path enabled we don't need to reconfigure the
+		 * FIFOs. Instead we can check to verify the values are
+		 * large enough to meet our needs, and use the values to
+		 * populate the flow control, ECN, and drop thresholds.
+		 */
+		if (rx_enable) {
+			size = FIELD_GET(FBNIC_RXB_PBUF_SIZE,
+					 rd32(fbd, FBNIC_RXB_PBUF_CFG(i)));
+			if (size < fifo_config[i].size)
+				dev_warn(fbd->dev,
+					 "fifo%d size of %d smaller than expected value of %d\n",
+					 i, size << 11,
+					 fifo_config[i].size << 11);
+		} else {
+			/* Program RXB Cuthrough */
+			wr32(fbd, FBNIC_RXB_CT_SIZE(i),
+			     FIELD_PREP(FBNIC_RXB_CT_SIZE_HEADER, 4) |
+			     FIELD_PREP(FBNIC_RXB_CT_SIZE_PAYLOAD, 2));
+
+			/* The granularity for the packet buffer size is 2KB
+			 * granularity while the packet buffer base address is
+			 * only 64B granularity
+			 */
+			wr32(fbd, FBNIC_RXB_PBUF_CFG(i),
+			     FIELD_PREP(FBNIC_RXB_PBUF_BASE_ADDR,
+					fifo_config[i].addr) |
+			     FIELD_PREP(FBNIC_RXB_PBUF_SIZE, size));
+
+			/* The granularity for the credits is 64B. This is
+			 * based on RXB_PBUF_SIZE * 32 + 4.
+			 */
+			wr32(fbd, FBNIC_RXB_PBUF_CREDIT(i),
+			     FIELD_PREP(FBNIC_RXB_PBUF_CREDIT_MASK,
+					size ? size * 32 + 4 : 0));
+		}
+
+		if (!size)
+			continue;
+
+		/* Pause is size of FIFO with 56KB skid to start/stop */
+		wr32(fbd, FBNIC_RXB_PAUSE_THLD(i),
+		     !(FBNIC_PAUSE_EN_MASK & (1u << i)) ? 0x1fff :
+		     FIELD_PREP(FBNIC_RXB_PAUSE_THLD_ON,
+				size * 32 - 0x380) |
+		     FIELD_PREP(FBNIC_RXB_PAUSE_THLD_OFF, 0x380));
+
+		/* Enable Drop when only one packet is left in the FIFO */
+		wr32(fbd, FBNIC_RXB_DROP_THLD(i),
+		     !(FBNIC_DROP_EN_MASK & (1u << i)) ? 0x1fff :
+		     FIELD_PREP(FBNIC_RXB_DROP_THLD_ON,
+				size * 32 -
+				FBNIC_MAX_JUMBO_FRAME_SIZE / 64) |
+		     FIELD_PREP(FBNIC_RXB_DROP_THLD_OFF,
+				size * 32 -
+				FBNIC_MAX_JUMBO_FRAME_SIZE / 64));
+
+		/* Enable ECN bit when 1/4 of RXB is filled with at least
+		 * 1 room for one full jumbo frame before setting ECN
+		 */
+		wr32(fbd, FBNIC_RXB_ECN_THLD(i),
+		     !(FBNIC_ECN_EN_MASK & (1u << i)) ? 0x1fff :
+		     FIELD_PREP(FBNIC_RXB_ECN_THLD_ON,
+				max_t(unsigned int,
+				      size * 32 / 4,
+				      FBNIC_MAX_JUMBO_FRAME_SIZE / 64)) |
+		     FIELD_PREP(FBNIC_RXB_ECN_THLD_OFF,
+				max_t(unsigned int,
+				      size * 32 / 4,
+				      FBNIC_MAX_JUMBO_FRAME_SIZE / 64)));
+	}
+
+	/* For now only enable drop and ECN. We need to add driver/kernel
+	 * interfaces for configuring pause.
+	 */
+	wr32(fbd, FBNIC_RXB_PAUSE_DROP_CTRL,
+	     FIELD_PREP(FBNIC_RXB_PAUSE_DROP_CTRL_DROP_ENABLE,
+			FBNIC_DROP_EN_MASK) |
+	     FIELD_PREP(FBNIC_RXB_PAUSE_DROP_CTRL_ECN_ENABLE,
+			FBNIC_ECN_EN_MASK));
+
+	/* Program INTF credits */
+	wr32(fbd, FBNIC_RXB_INTF_CREDIT,
+	     FBNIC_RXB_INTF_CREDIT_MASK0 |
+	     FBNIC_RXB_INTF_CREDIT_MASK1 |
+	     FBNIC_RXB_INTF_CREDIT_MASK2 |
+	     FIELD_PREP(FBNIC_RXB_INTF_CREDIT_MASK3, 8));
+
+	/* Configure calendar slots.
+	 * Rx: 0 - 62	RDE 1st, BMC 2nd
+	 *     63	BMC 1st, RDE 2nd
+	 */
+	for (i = 0; i < 16; i++) {
+		u32 calendar_val = (i == 15) ? 0x1e1b1b1b : 0x1b1b1b1b;
+
+		wr32(fbd, FBNIC_RXB_CLDR_PRIO_CFG(i), calendar_val);
+	}
+
+	/* Split the credits for the DRR up as follows:
+	 * Quantum0: 8000	Network to Host
+	 * Quantum1: 0		Not used
+	 * Quantum2: 80		BMC to Host
+	 * Quantum3: 0		Not used
+	 * Quantum4: 8000	Multicast to Host and BMC
+	 */
+	wr32(fbd, FBNIC_RXB_DWRR_RDE_WEIGHT0,
+	     FIELD_PREP(FBNIC_RXB_DWRR_RDE_WEIGHT0_QUANTUM0, 0x40) |
+	     FIELD_PREP(FBNIC_RXB_DWRR_RDE_WEIGHT0_QUANTUM2, 0x50));
+	wr32(fbd, FBNIC_RXB_DWRR_RDE_WEIGHT0_EXT,
+	     FIELD_PREP(FBNIC_RXB_DWRR_RDE_WEIGHT0_QUANTUM0, 0x1f));
+	wr32(fbd, FBNIC_RXB_DWRR_RDE_WEIGHT1,
+	     FIELD_PREP(FBNIC_RXB_DWRR_RDE_WEIGHT1_QUANTUM4, 0x40));
+	wr32(fbd, FBNIC_RXB_DWRR_RDE_WEIGHT1_EXT,
+	     FIELD_PREP(FBNIC_RXB_DWRR_RDE_WEIGHT1_QUANTUM4, 0x1f));
+
+	/* Program RXB FCS Endian register */
+	wr32(fbd, FBNIC_RXB_ENDIAN_FCS, 0x0aaaaaa0);
+}
+
+static void fbnic_mac_init_txb(struct fbnic_dev *fbd)
+{
+	int i;
+
+	wr32(fbd, FBNIC_TCE_TXB_CTRL, 0);
+
+	/* Configure Tx QM Credits */
+	wr32(fbd, FBNIC_QM_TQS_CTL1,
+	     FIELD_PREP(FBNIC_QM_TQS_CTL1_MC_MAX_CREDITS, 0x40) |
+	     FIELD_PREP(FBNIC_QM_TQS_CTL1_BULK_MAX_CREDITS, 0x20));
+
+	/* Initialize internal Tx queues */
+	wr32(fbd, FBNIC_TCE_TXB_TEI_Q0_CTRL, 0);
+	wr32(fbd, FBNIC_TCE_TXB_TEI_Q1_CTRL, 0);
+	wr32(fbd, FBNIC_TCE_TXB_MC_Q_CTRL,
+	     FIELD_PREP(FBNIC_TCE_TXB_Q_CTRL_SIZE, 0x400) |
+	     FIELD_PREP(FBNIC_TCE_TXB_Q_CTRL_START, 0x000));
+	wr32(fbd, FBNIC_TCE_TXB_RX_TEI_Q_CTRL, 0);
+	wr32(fbd, FBNIC_TCE_TXB_TX_BMC_Q_CTRL,
+	     FIELD_PREP(FBNIC_TCE_TXB_Q_CTRL_SIZE, 0x200) |
+	     FIELD_PREP(FBNIC_TCE_TXB_Q_CTRL_START, 0x400));
+	wr32(fbd, FBNIC_TCE_TXB_RX_BMC_Q_CTRL,
+	     FIELD_PREP(FBNIC_TCE_TXB_Q_CTRL_SIZE, 0x200) |
+	     FIELD_PREP(FBNIC_TCE_TXB_Q_CTRL_START, 0x600));
+
+	wr32(fbd, FBNIC_TCE_LSO_CTRL,
+	     FBNIC_TCE_LSO_CTRL_IPID_MODE_INC |
+	     FIELD_PREP(FBNIC_TCE_LSO_CTRL_TCPF_CLR_1ST, TCPHDR_PSH |
+							 TCPHDR_FIN) |
+	     FIELD_PREP(FBNIC_TCE_LSO_CTRL_TCPF_CLR_MID, TCPHDR_PSH |
+							 TCPHDR_CWR |
+							 TCPHDR_FIN) |
+	     FIELD_PREP(FBNIC_TCE_LSO_CTRL_TCPF_CLR_END, TCPHDR_CWR));
+	wr32(fbd, FBNIC_TCE_CSO_CTRL, 0);
+
+	wr32(fbd, FBNIC_TCE_BMC_MAX_PKTSZ,
+	     FIELD_PREP(FBNIC_TCE_BMC_MAX_PKTSZ_TX,
+			FBNIC_MAX_JUMBO_FRAME_SIZE) |
+	     FIELD_PREP(FBNIC_TCE_BMC_MAX_PKTSZ_RX,
+			FBNIC_MAX_JUMBO_FRAME_SIZE));
+	wr32(fbd, FBNIC_TCE_MC_MAX_PKTSZ,
+	     FIELD_PREP(FBNIC_TCE_MC_MAX_PKTSZ_TMI,
+			FBNIC_MAX_JUMBO_FRAME_SIZE));
+
+	/* Configure calendar slots.
+	 * Tx: 0 - 62	TMI 1st, BMC 2nd
+	 *     63	BMC 1st, TMI 2nd
+	 */
+	for (i = 0; i < 16; i++) {
+		u32 calendar_val = (i == 15) ? 0x1e1b1b1b : 0x1b1b1b1b;
+
+		wr32(fbd, FBNIC_TCE_TXB_CLDR_SLOT_CFG(i), calendar_val);
+	}
+
+	/* Configure DWRR */
+	wr32(fbd, FBNIC_TCE_TXB_ENQ_WRR_CTRL,
+	     FIELD_PREP(FBNIC_TCE_TXB_ENQ_WRR_CTRL_WEIGHT0, 0x64) |
+	     FIELD_PREP(FBNIC_TCE_TXB_ENQ_WRR_CTRL_WEIGHT2, 0x04));
+	wr32(fbd, FBNIC_TCE_TXB_TEI_DWRR_CTRL, 0);
+	wr32(fbd, FBNIC_TCE_TXB_TEI_DWRR_CTRL_EXT, 0);
+	wr32(fbd, FBNIC_TCE_TXB_BMC_DWRR_CTRL,
+	     FIELD_PREP(FBNIC_TCE_TXB_BMC_DWRR_CTRL_QUANTUM0, 0x50) |
+	     FIELD_PREP(FBNIC_TCE_TXB_BMC_DWRR_CTRL_QUANTUM1, 0x82));
+	wr32(fbd, FBNIC_TCE_TXB_BMC_DWRR_CTRL_EXT, 0);
+	wr32(fbd, FBNIC_TCE_TXB_NTWRK_DWRR_CTRL,
+	     FIELD_PREP(FBNIC_TCE_TXB_NTWRK_DWRR_CTRL_QUANTUM1, 0x50) |
+	     FIELD_PREP(FBNIC_TCE_TXB_NTWRK_DWRR_CTRL_QUANTUM2, 0x20));
+	wr32(fbd, FBNIC_TCE_TXB_NTWRK_DWRR_CTRL_EXT,
+	     FIELD_PREP(FBNIC_TCE_TXB_NTWRK_DWRR_CTRL_QUANTUM2, 0x03));
+
+	/* Configure SOP protocol protection */
+	wr32(fbd, FBNIC_TCE_SOP_PROT_CTRL,
+	     FIELD_PREP(FBNIC_TCE_SOP_PROT_CTRL_TBI, 0x78) |
+	     FIELD_PREP(FBNIC_TCE_SOP_PROT_CTRL_TTI_FRM, 0x40) |
+	     FIELD_PREP(FBNIC_TCE_SOP_PROT_CTRL_TTI_CM, 0x0c));
+
+	/* Conservative configuration on MAC interface Start of Packet
+	 * protection FIFO. This sets the minimum depth of the FIFO before
+	 * we start sending packets to the MAC measured in 64B units and
+	 * up to 160 entries deep.
+	 *
+	 * For the ASIC the clock is fast enough that we will likely fill
+	 * the SOP FIFO before the MAC can drain it. So just use a minimum
+	 * value of 8.
+	 */
+	wr32(fbd, FBNIC_TMI_SOP_PROT_CTRL, 8);
+
+	wrfl(fbd);
+	wr32(fbd, FBNIC_TCE_TXB_CTRL, FBNIC_TCE_TXB_CTRL_TCAM_ENABLE |
+				      FBNIC_TCE_TXB_CTRL_LOAD);
+}
+
+static void fbnic_mac_init_regs(struct fbnic_dev *fbd)
+{
+	fbnic_mac_init_axi(fbd);
+	fbnic_mac_init_qm(fbd);
+	fbnic_mac_init_rxb(fbd);
+	fbnic_mac_init_txb(fbd);
+}
+
+static void fbnic_mac_tx_pause_config(struct fbnic_dev *fbd, bool tx_pause)
+{
+	u32 rxb_pause_ctrl;
+
+	/* Enable generation of pause frames if enabled */
+	rxb_pause_ctrl = rd32(fbd, FBNIC_RXB_PAUSE_DROP_CTRL);
+	rxb_pause_ctrl &= ~FBNIC_RXB_PAUSE_DROP_CTRL_PAUSE_ENABLE;
+	if (tx_pause)
+		rxb_pause_ctrl |=
+			FIELD_PREP(FBNIC_RXB_PAUSE_DROP_CTRL_PAUSE_ENABLE,
+				   FBNIC_PAUSE_EN_MASK);
+	wr32(fbd, FBNIC_RXB_PAUSE_DROP_CTRL, rxb_pause_ctrl);
+}
+
+static int fbnic_pcs_get_link_event_asic(struct fbnic_dev *fbd)
+{
+	u32 pcs_intr_mask = rd32(fbd, FBNIC_SIG_PCS_INTR_STS);
+
+	if (pcs_intr_mask & FBNIC_SIG_PCS_INTR_LINK_DOWN)
+		return FBNIC_LINK_EVENT_DOWN;
+
+	return (pcs_intr_mask & FBNIC_SIG_PCS_INTR_LINK_UP) ?
+	       FBNIC_LINK_EVENT_UP : FBNIC_LINK_EVENT_NONE;
+}
+
+static u32 __fbnic_mac_cmd_config_asic(struct fbnic_dev *fbd,
+				       bool tx_pause, bool rx_pause)
+{
+	/* Enable MAC Promiscuous mode and Tx padding */
+	u32 command_config = FBNIC_MAC_COMMAND_CONFIG_TX_PAD_EN |
+			     FBNIC_MAC_COMMAND_CONFIG_PROMISC_EN;
+	struct fbnic_net *fbn = netdev_priv(fbd->netdev);
+
+	/* Disable pause frames if not enabled */
+	if (!tx_pause)
+		command_config |= FBNIC_MAC_COMMAND_CONFIG_TX_PAUSE_DIS;
+	if (!rx_pause)
+		command_config |= FBNIC_MAC_COMMAND_CONFIG_RX_PAUSE_DIS;
+
+	/* Disable fault handling if no FEC is requested */
+	if ((fbn->fec & FBNIC_FEC_MODE_MASK) == FBNIC_FEC_OFF)
+		command_config |= FBNIC_MAC_COMMAND_CONFIG_FLT_HDL_DIS;
+
+	return command_config;
+}
+
+static bool fbnic_mac_get_pcs_link_status(struct fbnic_dev *fbd)
+{
+	struct fbnic_net *fbn = netdev_priv(fbd->netdev);
+	u32 pcs_status, lane_mask = ~0;
+
+	pcs_status = rd32(fbd, FBNIC_SIG_PCS_OUT0);
+	if (!(pcs_status & FBNIC_SIG_PCS_OUT0_LINK))
+		return false;
+
+	/* Define the expected lane mask for the status bits we need to check */
+	switch (fbn->link_mode & FBNIC_LINK_MODE_MASK) {
+	case FBNIC_LINK_100R2:
+		lane_mask = 0xf;
+		break;
+	case FBNIC_LINK_50R1:
+		lane_mask = 3;
+		break;
+	case FBNIC_LINK_50R2:
+		switch (fbn->fec & FBNIC_FEC_MODE_MASK) {
+		case FBNIC_FEC_OFF:
+			lane_mask = 0x63;
+			break;
+		case FBNIC_FEC_RS:
+			lane_mask = 5;
+			break;
+		case FBNIC_FEC_BASER:
+			lane_mask = 0xf;
+			break;
+		}
+		break;
+	case FBNIC_LINK_25R1:
+		lane_mask = 1;
+		break;
+	}
+
+	/* Use an XOR to remove the bits we expect to see set */
+	switch (fbn->fec & FBNIC_FEC_MODE_MASK) {
+	case FBNIC_FEC_OFF:
+		lane_mask ^= FIELD_GET(FBNIC_SIG_PCS_OUT0_BLOCK_LOCK,
+				       pcs_status);
+		break;
+	case FBNIC_FEC_RS:
+		lane_mask ^= FIELD_GET(FBNIC_SIG_PCS_OUT0_AMPS_LOCK,
+				       pcs_status);
+		break;
+	case FBNIC_FEC_BASER:
+		lane_mask ^= FIELD_GET(FBNIC_SIG_PCS_OUT1_FCFEC_LOCK,
+				       rd32(fbd, FBNIC_SIG_PCS_OUT1));
+		break;
+	}
+
+	/* If all lanes cancelled then we have a lock on all lanes */
+	return !lane_mask;
+}
+
+static bool fbnic_pcs_get_link_asic(struct fbnic_dev *fbd)
+{
+	bool link;
+
+	/* Flush status bits to clear possible stale data,
+	 * bits should reset themselves back to 1 if link is truly up
+	 */
+	wr32(fbd, FBNIC_SIG_PCS_OUT0, FBNIC_SIG_PCS_OUT0_LINK |
+				      FBNIC_SIG_PCS_OUT0_BLOCK_LOCK |
+				      FBNIC_SIG_PCS_OUT0_AMPS_LOCK);
+	wr32(fbd, FBNIC_SIG_PCS_OUT1, FBNIC_SIG_PCS_OUT1_FCFEC_LOCK);
+	wrfl(fbd);
+
+	/* Clear interrupt state due to recent changes. */
+	wr32(fbd, FBNIC_SIG_PCS_INTR_STS,
+	     FBNIC_SIG_PCS_INTR_LINK_DOWN | FBNIC_SIG_PCS_INTR_LINK_UP);
+
+	link = fbnic_mac_get_pcs_link_status(fbd);
+
+	/* Enable interrupt to only capture changes in link state */
+	wr32(fbd, FBNIC_SIG_PCS_INTR_MASK,
+	     ~FBNIC_SIG_PCS_INTR_LINK_DOWN & ~FBNIC_SIG_PCS_INTR_LINK_UP);
+	wr32(fbd, FBNIC_INTR_MASK_CLEAR(0), 1u << FBNIC_PCS_MSIX_ENTRY);
+
+	return link;
+}
+
+static void fbnic_pcs_get_fw_settings(struct fbnic_dev *fbd)
+{
+	struct fbnic_net *fbn = netdev_priv(fbd->netdev);
+	u8 link_mode = fbn->link_mode;
+	u8 fec = fbn->fec;
+
+	/* Update FEC first to reflect FW current mode */
+	if (fbn->fec & FBNIC_FEC_AUTO) {
+		switch (fbd->fw_cap.link_fec) {
+		case FBNIC_FW_LINK_FEC_NONE:
+			fec = FBNIC_FEC_OFF;
+			break;
+		case FBNIC_FW_LINK_FEC_RS:
+			fec = FBNIC_FEC_RS;
+			break;
+		case FBNIC_FW_LINK_FEC_BASER:
+			fec = FBNIC_FEC_BASER;
+			break;
+		default:
+			return;
+		}
+
+		fbn->fec = fec;
+	}
+
+	/* Do nothing if AUTO mode is not engaged */
+	if (fbn->link_mode & FBNIC_LINK_AUTO) {
+		switch (fbd->fw_cap.link_speed) {
+		case FBNIC_FW_LINK_SPEED_25R1:
+			link_mode = FBNIC_LINK_25R1;
+			break;
+		case FBNIC_FW_LINK_SPEED_50R2:
+			link_mode = FBNIC_LINK_50R2;
+			break;
+		case FBNIC_FW_LINK_SPEED_50R1:
+			link_mode = FBNIC_LINK_50R1;
+			fec = FBNIC_FEC_RS;
+			break;
+		case FBNIC_FW_LINK_SPEED_100R2:
+			link_mode = FBNIC_LINK_100R2;
+			fec = FBNIC_FEC_RS;
+			break;
+		default:
+			return;
+		}
+
+		fbn->link_mode = link_mode;
+	}
+}
+
+static int fbnic_pcs_enable_asic(struct fbnic_dev *fbd)
+{
+	/* Mask and clear the PCS interrupt, will be enabled by link handler */
+	wr32(fbd, FBNIC_SIG_PCS_INTR_MASK, ~0);
+	wr32(fbd, FBNIC_SIG_PCS_INTR_STS, ~0);
+
+	/* Pull in settings from FW */
+	fbnic_pcs_get_fw_settings(fbd);
+
+	return 0;
+}
+
+static void fbnic_pcs_disable_asic(struct fbnic_dev *fbd)
+{
+	/* Mask and clear the PCS interrupt */
+	wr32(fbd, FBNIC_SIG_PCS_INTR_MASK, ~0);
+	wr32(fbd, FBNIC_SIG_PCS_INTR_STS, ~0);
+}
+
+static void fbnic_mac_link_down_asic(struct fbnic_dev *fbd)
+{
+	u32 cmd_cfg, mac_ctrl;
+
+	cmd_cfg = __fbnic_mac_cmd_config_asic(fbd, false, false);
+	mac_ctrl = rd32(fbd, FBNIC_SIG_MAC_IN0);
+
+	mac_ctrl |= FBNIC_SIG_MAC_IN0_RESET_FF_TX_CLK |
+		    FBNIC_SIG_MAC_IN0_RESET_TX_CLK |
+		    FBNIC_SIG_MAC_IN0_RESET_FF_RX_CLK |
+		    FBNIC_SIG_MAC_IN0_RESET_RX_CLK;
+
+	wr32(fbd, FBNIC_SIG_MAC_IN0, mac_ctrl);
+	wr32(fbd, FBNIC_MAC_COMMAND_CONFIG, cmd_cfg);
+}
+
+static void fbnic_mac_link_up_asic(struct fbnic_dev *fbd,
+				   bool tx_pause, bool rx_pause)
+{
+	u32 cmd_cfg, mac_ctrl;
+
+	fbnic_mac_tx_pause_config(fbd, tx_pause);
+
+	cmd_cfg = __fbnic_mac_cmd_config_asic(fbd, tx_pause, rx_pause);
+	mac_ctrl = rd32(fbd, FBNIC_SIG_MAC_IN0);
+
+	mac_ctrl &= ~(FBNIC_SIG_MAC_IN0_RESET_FF_TX_CLK |
+		      FBNIC_SIG_MAC_IN0_RESET_TX_CLK |
+		      FBNIC_SIG_MAC_IN0_RESET_FF_RX_CLK |
+		      FBNIC_SIG_MAC_IN0_RESET_RX_CLK);
+	cmd_cfg |= FBNIC_MAC_COMMAND_CONFIG_RX_ENA |
+		   FBNIC_MAC_COMMAND_CONFIG_TX_ENA;
+
+	wr32(fbd, FBNIC_SIG_MAC_IN0, mac_ctrl);
+	wr32(fbd, FBNIC_MAC_COMMAND_CONFIG, cmd_cfg);
+}
+
+static const struct fbnic_mac fbnic_mac_asic = {
+	.init_regs = fbnic_mac_init_regs,
+	.pcs_enable = fbnic_pcs_enable_asic,
+	.pcs_disable = fbnic_pcs_disable_asic,
+	.pcs_get_link = fbnic_pcs_get_link_asic,
+	.pcs_get_link_event = fbnic_pcs_get_link_event_asic,
+	.link_down = fbnic_mac_link_down_asic,
+	.link_up = fbnic_mac_link_up_asic,
+};
+
+/**
+ * fbnic_mac_init - Assign a MAC type and initialize the fbnic device
+ * @fbd: Device pointer to device to initialize
+ *
+ * Return: zero on success, negative on failure
+ *
+ * Initialize the MAC function pointers and initializes the MAC of
+ * the device.
+ **/
+int fbnic_mac_init(struct fbnic_dev *fbd)
+{
+	fbd->mac = &fbnic_mac_asic;
+
+	fbd->mac->init_regs(fbd);
+
+	return 0;
+}