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, 558 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
new file mode 100644
index 000000000..4ad9ff025
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
@@ -0,0 +1,558 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RPM CN10K driver
+ *
+ * Copyright (C) 2020 Marvell.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/pci.h>
+#include "rvu.h"
+#include "cgx.h"
+#include "rvu_reg.h"
+
+/* RVU LMTST */
+#define LMT_TBL_OP_READ		0
+#define LMT_TBL_OP_WRITE	1
+#define LMT_MAP_TABLE_SIZE	(128 * 1024)
+#define LMT_MAPTBL_ENTRY_SIZE	16
+
+/* Function to perform operations (read/write) on lmtst map table */
+static int lmtst_map_table_ops(struct rvu *rvu, u32 index, u64 *val,
+			       int lmt_tbl_op)
+{
+	void __iomem *lmt_map_base;
+	u64 tbl_base;
+
+	tbl_base = rvu_read64(rvu, BLKADDR_APR, APR_AF_LMT_MAP_BASE);
+
+	lmt_map_base = ioremap_wc(tbl_base, LMT_MAP_TABLE_SIZE);
+	if (!lmt_map_base) {
+		dev_err(rvu->dev, "Failed to setup lmt map table mapping!!\n");
+		return -ENOMEM;
+	}
+
+	if (lmt_tbl_op == LMT_TBL_OP_READ) {
+		*val = readq(lmt_map_base + index);
+	} else {
+		writeq((*val), (lmt_map_base + index));
+		/* Flushing the AP interceptor cache to make APR_LMT_MAP_ENTRY_S
+		 * changes effective. Write 1 for flush and read is being used as a
+		 * barrier and sets up a data dependency. Write to 0 after a write
+		 * to 1 to complete the flush.
+		 */
+		rvu_write64(rvu, BLKADDR_APR, APR_AF_LMT_CTL, BIT_ULL(0));
+		rvu_read64(rvu, BLKADDR_APR, APR_AF_LMT_CTL);
+		rvu_write64(rvu, BLKADDR_APR, APR_AF_LMT_CTL, 0x00);
+	}
+
+	iounmap(lmt_map_base);
+	return 0;
+}
+
+#define LMT_MAP_TBL_W1_OFF  8
+static u32 rvu_get_lmtst_tbl_index(struct rvu *rvu, u16 pcifunc)
+{
+	return ((rvu_get_pf(pcifunc) * rvu->hw->total_vfs) +
+		(pcifunc & RVU_PFVF_FUNC_MASK)) * LMT_MAPTBL_ENTRY_SIZE;
+}
+
+static int rvu_get_lmtaddr(struct rvu *rvu, u16 pcifunc,
+			   u64 iova, u64 *lmt_addr)
+{
+	u64 pa, val, pf;
+	int err;
+
+	if (!iova) {
+		dev_err(rvu->dev, "%s Requested Null address for transulation\n", __func__);
+		return -EINVAL;
+	}
+
+	rvu_write64(rvu, BLKADDR_RVUM, RVU_AF_SMMU_ADDR_REQ, iova);
+	pf = rvu_get_pf(pcifunc) & 0x1F;
+	val = BIT_ULL(63) | BIT_ULL(14) | BIT_ULL(13) | pf << 8 |
+	      ((pcifunc & RVU_PFVF_FUNC_MASK) & 0xFF);
+	rvu_write64(rvu, BLKADDR_RVUM, RVU_AF_SMMU_TXN_REQ, val);
+
+	err = rvu_poll_reg(rvu, BLKADDR_RVUM, RVU_AF_SMMU_ADDR_RSP_STS, BIT_ULL(0), false);
+	if (err) {
+		dev_err(rvu->dev, "%s LMTLINE iova transulation failed\n", __func__);
+		return err;
+	}
+	val = rvu_read64(rvu, BLKADDR_RVUM, RVU_AF_SMMU_ADDR_RSP_STS);
+	if (val & ~0x1ULL) {
+		dev_err(rvu->dev, "%s LMTLINE iova transulation failed err:%llx\n", __func__, val);
+		return -EIO;
+	}
+	/* PA[51:12] = RVU_AF_SMMU_TLN_FLIT0[57:18]
+	 * PA[11:0] = IOVA[11:0]
+	 */
+	pa = rvu_read64(rvu, BLKADDR_RVUM, RVU_AF_SMMU_TLN_FLIT0) >> 18;
+	pa &= GENMASK_ULL(39, 0);
+	*lmt_addr = (pa << 12) | (iova  & 0xFFF);
+
+	return 0;
+}
+
+static int rvu_update_lmtaddr(struct rvu *rvu, u16 pcifunc, u64 lmt_addr)
+{
+	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
+	u32 tbl_idx;
+	int err = 0;
+	u64 val;
+
+	/* Read the current lmt addr of pcifunc */
+	tbl_idx = rvu_get_lmtst_tbl_index(rvu, pcifunc);
+	err = lmtst_map_table_ops(rvu, tbl_idx, &val, LMT_TBL_OP_READ);
+	if (err) {
+		dev_err(rvu->dev,
+			"Failed to read LMT map table: index 0x%x err %d\n",
+			tbl_idx, err);
+		return err;
+	}
+
+	/* Storing the seondary's lmt base address as this needs to be
+	 * reverted in FLR. Also making sure this default value doesn't
+	 * get overwritten on multiple calls to this mailbox.
+	 */
+	if (!pfvf->lmt_base_addr)
+		pfvf->lmt_base_addr = val;
+
+	/* Update the LMT table with new addr */
+	err = lmtst_map_table_ops(rvu, tbl_idx, &lmt_addr, LMT_TBL_OP_WRITE);
+	if (err) {
+		dev_err(rvu->dev,
+			"Failed to update LMT map table: index 0x%x err %d\n",
+			tbl_idx, err);
+		return err;
+	}
+	return 0;
+}
+
+int rvu_mbox_handler_lmtst_tbl_setup(struct rvu *rvu,
+				     struct lmtst_tbl_setup_req *req,
+				     struct msg_rsp *rsp)
+{
+	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
+	u32 pri_tbl_idx, tbl_idx;
+	u64 lmt_addr;
+	int err = 0;
+	u64 val;
+
+	/* Check if PF_FUNC wants to use it's own local memory as LMTLINE
+	 * region, if so, convert that IOVA to physical address and
+	 * populate LMT table with that address
+	 */
+	if (req->use_local_lmt_region) {
+		err = rvu_get_lmtaddr(rvu, req->hdr.pcifunc,
+				      req->lmt_iova, &lmt_addr);
+		if (err < 0)
+			return err;
+
+		/* Update the lmt addr for this PFFUNC in the LMT table */
+		err = rvu_update_lmtaddr(rvu, req->hdr.pcifunc, lmt_addr);
+		if (err)
+			return err;
+	}
+
+	/* Reconfiguring lmtst map table in lmt region shared mode i.e. make
+	 * multiple PF_FUNCs to share an LMTLINE region, so primary/base
+	 * pcifunc (which is passed as an argument to mailbox) is the one
+	 * whose lmt base address will be shared among other secondary
+	 * pcifunc (will be the one who is calling this mailbox).
+	 */
+	if (req->base_pcifunc) {
+		/* Calculating the LMT table index equivalent to primary
+		 * pcifunc.
+		 */
+		pri_tbl_idx = rvu_get_lmtst_tbl_index(rvu, req->base_pcifunc);
+
+		/* Read the base lmt addr of the primary pcifunc */
+		err = lmtst_map_table_ops(rvu, pri_tbl_idx, &val,
+					  LMT_TBL_OP_READ);
+		if (err) {
+			dev_err(rvu->dev,
+				"Failed to read LMT map table: index 0x%x err %d\n",
+				pri_tbl_idx, err);
+			goto error;
+		}
+
+		/* Update the base lmt addr of secondary with primary's base
+		 * lmt addr.
+		 */
+		err = rvu_update_lmtaddr(rvu, req->hdr.pcifunc, val);
+		if (err)
+			return err;
+	}
+
+	/* This mailbox can also be used to update word1 of APR_LMT_MAP_ENTRY_S
+	 * like enabling scheduled LMTST, disable LMTLINE prefetch, disable
+	 * early completion for ordered LMTST.
+	 */
+	if (req->sch_ena || req->dis_sched_early_comp || req->dis_line_pref) {
+		tbl_idx = rvu_get_lmtst_tbl_index(rvu, req->hdr.pcifunc);
+		err = lmtst_map_table_ops(rvu, tbl_idx + LMT_MAP_TBL_W1_OFF,
+					  &val, LMT_TBL_OP_READ);
+		if (err) {
+			dev_err(rvu->dev,
+				"Failed to read LMT map table: index 0x%x err %d\n",
+				tbl_idx + LMT_MAP_TBL_W1_OFF, err);
+			goto error;
+		}
+
+		/* Storing lmt map table entry word1 default value as this needs
+		 * to be reverted in FLR. Also making sure this default value
+		 * doesn't get overwritten on multiple calls to this mailbox.
+		 */
+		if (!pfvf->lmt_map_ent_w1)
+			pfvf->lmt_map_ent_w1 = val;
+
+		/* Disable early completion for Ordered LMTSTs. */
+		if (req->dis_sched_early_comp)
+			val |= (req->dis_sched_early_comp <<
+				APR_LMT_MAP_ENT_DIS_SCH_CMP_SHIFT);
+		/* Enable scheduled LMTST */
+		if (req->sch_ena)
+			val |= (req->sch_ena << APR_LMT_MAP_ENT_SCH_ENA_SHIFT) |
+				req->ssow_pf_func;
+		/* Disables LMTLINE prefetch before receiving store data. */
+		if (req->dis_line_pref)
+			val |= (req->dis_line_pref <<
+				APR_LMT_MAP_ENT_DIS_LINE_PREF_SHIFT);
+
+		err = lmtst_map_table_ops(rvu, tbl_idx + LMT_MAP_TBL_W1_OFF,
+					  &val, LMT_TBL_OP_WRITE);
+		if (err) {
+			dev_err(rvu->dev,
+				"Failed to update LMT map table: index 0x%x err %d\n",
+				tbl_idx + LMT_MAP_TBL_W1_OFF, err);
+			goto error;
+		}
+	}
+
+error:
+	return err;
+}
+
+/* Resetting the lmtst map table to original base addresses */
+void rvu_reset_lmt_map_tbl(struct rvu *rvu, u16 pcifunc)
+{
+	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
+	u32 tbl_idx;
+	int err;
+
+	if (is_rvu_otx2(rvu))
+		return;
+
+	if (pfvf->lmt_base_addr || pfvf->lmt_map_ent_w1) {
+		/* This corresponds to lmt map table index */
+		tbl_idx = rvu_get_lmtst_tbl_index(rvu, pcifunc);
+		/* Reverting back original lmt base addr for respective
+		 * pcifunc.
+		 */
+		if (pfvf->lmt_base_addr) {
+			err = lmtst_map_table_ops(rvu, tbl_idx,
+						  &pfvf->lmt_base_addr,
+						  LMT_TBL_OP_WRITE);
+			if (err)
+				dev_err(rvu->dev,
+					"Failed to update LMT map table: index 0x%x err %d\n",
+					tbl_idx, err);
+			pfvf->lmt_base_addr = 0;
+		}
+		/* Reverting back to orginal word1 val of lmtst map table entry
+		 * which underwent changes.
+		 */
+		if (pfvf->lmt_map_ent_w1) {
+			err = lmtst_map_table_ops(rvu,
+						  tbl_idx + LMT_MAP_TBL_W1_OFF,
+						  &pfvf->lmt_map_ent_w1,
+						  LMT_TBL_OP_WRITE);
+			if (err)
+				dev_err(rvu->dev,
+					"Failed to update LMT map table: index 0x%x err %d\n",
+					tbl_idx + LMT_MAP_TBL_W1_OFF, err);
+			pfvf->lmt_map_ent_w1 = 0;
+		}
+	}
+}
+
+int rvu_set_channels_base(struct rvu *rvu)
+{
+	u16 nr_lbk_chans, nr_sdp_chans, nr_cgx_chans, nr_cpt_chans;
+	u16 sdp_chan_base, cgx_chan_base, cpt_chan_base;
+	struct rvu_hwinfo *hw = rvu->hw;
+	u64 nix_const, nix_const1;
+	int blkaddr;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, 0);
+	if (blkaddr < 0)
+		return blkaddr;
+
+	nix_const = rvu_read64(rvu, blkaddr, NIX_AF_CONST);
+	nix_const1 = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
+
+	hw->cgx = (nix_const >> 12) & 0xFULL;
+	hw->lmac_per_cgx = (nix_const >> 8) & 0xFULL;
+	hw->cgx_links = hw->cgx * hw->lmac_per_cgx;
+	hw->lbk_links = (nix_const >> 24) & 0xFULL;
+	hw->cpt_links = (nix_const >> 44) & 0xFULL;
+	hw->sdp_links = 1;
+
+	hw->cgx_chan_base = NIX_CHAN_CGX_LMAC_CHX(0, 0, 0);
+	hw->lbk_chan_base = NIX_CHAN_LBK_CHX(0, 0);
+	hw->sdp_chan_base = NIX_CHAN_SDP_CH_START;
+
+	/* No Programmable channels */
+	if (!(nix_const & BIT_ULL(60)))
+		return 0;
+
+	hw->cap.programmable_chans = true;
+
+	/* If programmable channels are present then configure
+	 * channels such that all channel numbers are contiguous
+	 * leaving no holes. This way the new CPT channels can be
+	 * accomodated. The order of channel numbers assigned is
+	 * LBK, SDP, CGX and CPT. Also the base channel number
+	 * of a block must be multiple of number of channels
+	 * of the block.
+	 */
+	nr_lbk_chans = (nix_const >> 16) & 0xFFULL;
+	nr_sdp_chans = nix_const1 & 0xFFFULL;
+	nr_cgx_chans = nix_const & 0xFFULL;
+	nr_cpt_chans = (nix_const >> 32) & 0xFFFULL;
+
+	sdp_chan_base = hw->lbk_chan_base + hw->lbk_links * nr_lbk_chans;
+	/* Round up base channel to multiple of number of channels */
+	hw->sdp_chan_base = ALIGN(sdp_chan_base, nr_sdp_chans);
+
+	cgx_chan_base = hw->sdp_chan_base + hw->sdp_links * nr_sdp_chans;
+	hw->cgx_chan_base = ALIGN(cgx_chan_base, nr_cgx_chans);
+
+	cpt_chan_base = hw->cgx_chan_base + hw->cgx_links * nr_cgx_chans;
+	hw->cpt_chan_base = ALIGN(cpt_chan_base, nr_cpt_chans);
+
+	/* Out of 4096 channels start CPT from 2048 so
+	 * that MSB for CPT channels is always set
+	 */
+	if (cpt_chan_base <= NIX_CHAN_CPT_CH_START) {
+		hw->cpt_chan_base = NIX_CHAN_CPT_CH_START;
+	} else {
+		dev_err(rvu->dev,
+			"CPT channels could not fit in the range 2048-4095\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+#define LBK_CONNECT_NIXX(a)		(0x0 + (a))
+
+static void __rvu_lbk_set_chans(struct rvu *rvu, void __iomem *base,
+				u64 offset, int lbkid, u16 chans)
+{
+	struct rvu_hwinfo *hw = rvu->hw;
+	u64 cfg;
+
+	cfg = readq(base + offset);
+	cfg &= ~(LBK_LINK_CFG_RANGE_MASK |
+		 LBK_LINK_CFG_ID_MASK | LBK_LINK_CFG_BASE_MASK);
+	cfg |=	FIELD_PREP(LBK_LINK_CFG_RANGE_MASK, ilog2(chans));
+	cfg |=	FIELD_PREP(LBK_LINK_CFG_ID_MASK, lbkid);
+	cfg |=	FIELD_PREP(LBK_LINK_CFG_BASE_MASK, hw->lbk_chan_base);
+
+	writeq(cfg, base + offset);
+}
+
+static void rvu_lbk_set_channels(struct rvu *rvu)
+{
+	struct pci_dev *pdev = NULL;
+	void __iomem *base;
+	u64 lbk_const;
+	u8 src, dst;
+	u16 chans;
+
+	/* To loopback packets between multiple NIX blocks
+	 * mutliple LBK blocks are needed. With two NIX blocks,
+	 * four LBK blocks are needed and each LBK block
+	 * source and destination are as follows:
+	 * LBK0 - source NIX0 and destination NIX1
+	 * LBK1 - source NIX0 and destination NIX1
+	 * LBK2 - source NIX1 and destination NIX0
+	 * LBK3 - source NIX1 and destination NIX1
+	 * As per the HRM channel numbers should be programmed as:
+	 * P2X and X2P of LBK0 as same
+	 * P2X and X2P of LBK3 as same
+	 * P2X of LBK1 and X2P of LBK2 as same
+	 * P2X of LBK2 and X2P of LBK1 as same
+	 */
+	while (true) {
+		pdev = pci_get_device(PCI_VENDOR_ID_CAVIUM,
+				      PCI_DEVID_OCTEONTX2_LBK, pdev);
+		if (!pdev)
+			return;
+
+		base = pci_ioremap_bar(pdev, 0);
+		if (!base)
+			goto err_put;
+
+		lbk_const = readq(base + LBK_CONST);
+		chans = FIELD_GET(LBK_CONST_CHANS, lbk_const);
+		dst = FIELD_GET(LBK_CONST_DST, lbk_const);
+		src = FIELD_GET(LBK_CONST_SRC, lbk_const);
+
+		if (src == dst) {
+			if (src == LBK_CONNECT_NIXX(0)) { /* LBK0 */
+				__rvu_lbk_set_chans(rvu, base, LBK_LINK_CFG_X2P,
+						    0, chans);
+				__rvu_lbk_set_chans(rvu, base, LBK_LINK_CFG_P2X,
+						    0, chans);
+			} else if (src == LBK_CONNECT_NIXX(1)) { /* LBK3 */
+				__rvu_lbk_set_chans(rvu, base, LBK_LINK_CFG_X2P,
+						    1, chans);
+				__rvu_lbk_set_chans(rvu, base, LBK_LINK_CFG_P2X,
+						    1, chans);
+			}
+		} else {
+			if (src == LBK_CONNECT_NIXX(0)) { /* LBK1 */
+				__rvu_lbk_set_chans(rvu, base, LBK_LINK_CFG_X2P,
+						    0, chans);
+				__rvu_lbk_set_chans(rvu, base, LBK_LINK_CFG_P2X,
+						    1, chans);
+			} else if (src == LBK_CONNECT_NIXX(1)) { /* LBK2 */
+				__rvu_lbk_set_chans(rvu, base, LBK_LINK_CFG_X2P,
+						    1, chans);
+				__rvu_lbk_set_chans(rvu, base, LBK_LINK_CFG_P2X,
+						    0, chans);
+			}
+		}
+		iounmap(base);
+	}
+err_put:
+	pci_dev_put(pdev);
+}
+
+static void __rvu_nix_set_channels(struct rvu *rvu, int blkaddr)
+{
+	u64 nix_const1 = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
+	u64 nix_const = rvu_read64(rvu, blkaddr, NIX_AF_CONST);
+	u16 cgx_chans, lbk_chans, sdp_chans, cpt_chans;
+	struct rvu_hwinfo *hw = rvu->hw;
+	int link, nix_link = 0;
+	u16 start;
+	u64 cfg;
+
+	cgx_chans = nix_const & 0xFFULL;
+	lbk_chans = (nix_const >> 16) & 0xFFULL;
+	sdp_chans = nix_const1 & 0xFFFULL;
+	cpt_chans = (nix_const >> 32) & 0xFFFULL;
+
+	start = hw->cgx_chan_base;
+	for (link = 0; link < hw->cgx_links; link++, nix_link++) {
+		cfg = rvu_read64(rvu, blkaddr, NIX_AF_LINKX_CFG(nix_link));
+		cfg &= ~(NIX_AF_LINKX_BASE_MASK | NIX_AF_LINKX_RANGE_MASK);
+		cfg |=	FIELD_PREP(NIX_AF_LINKX_RANGE_MASK, ilog2(cgx_chans));
+		cfg |=	FIELD_PREP(NIX_AF_LINKX_BASE_MASK, start);
+		rvu_write64(rvu, blkaddr, NIX_AF_LINKX_CFG(nix_link), cfg);
+		start += cgx_chans;
+	}
+
+	start = hw->lbk_chan_base;
+	for (link = 0; link < hw->lbk_links; link++, nix_link++) {
+		cfg = rvu_read64(rvu, blkaddr, NIX_AF_LINKX_CFG(nix_link));
+		cfg &= ~(NIX_AF_LINKX_BASE_MASK | NIX_AF_LINKX_RANGE_MASK);
+		cfg |=	FIELD_PREP(NIX_AF_LINKX_RANGE_MASK, ilog2(lbk_chans));
+		cfg |=	FIELD_PREP(NIX_AF_LINKX_BASE_MASK, start);
+		rvu_write64(rvu, blkaddr, NIX_AF_LINKX_CFG(nix_link), cfg);
+		start += lbk_chans;
+	}
+
+	start = hw->sdp_chan_base;
+	for (link = 0; link < hw->sdp_links; link++, nix_link++) {
+		cfg = rvu_read64(rvu, blkaddr, NIX_AF_LINKX_CFG(nix_link));
+		cfg &= ~(NIX_AF_LINKX_BASE_MASK | NIX_AF_LINKX_RANGE_MASK);
+		cfg |=	FIELD_PREP(NIX_AF_LINKX_RANGE_MASK, ilog2(sdp_chans));
+		cfg |=	FIELD_PREP(NIX_AF_LINKX_BASE_MASK, start);
+		rvu_write64(rvu, blkaddr, NIX_AF_LINKX_CFG(nix_link), cfg);
+		start += sdp_chans;
+	}
+
+	start = hw->cpt_chan_base;
+	for (link = 0; link < hw->cpt_links; link++, nix_link++) {
+		cfg = rvu_read64(rvu, blkaddr, NIX_AF_LINKX_CFG(nix_link));
+		cfg &= ~(NIX_AF_LINKX_BASE_MASK | NIX_AF_LINKX_RANGE_MASK);
+		cfg |=	FIELD_PREP(NIX_AF_LINKX_RANGE_MASK, ilog2(cpt_chans));
+		cfg |=	FIELD_PREP(NIX_AF_LINKX_BASE_MASK, start);
+		rvu_write64(rvu, blkaddr, NIX_AF_LINKX_CFG(nix_link), cfg);
+		start += cpt_chans;
+	}
+}
+
+static void rvu_nix_set_channels(struct rvu *rvu)
+{
+	int blkaddr = 0;
+
+	blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
+	while (blkaddr) {
+		__rvu_nix_set_channels(rvu, blkaddr);
+		blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
+	}
+}
+
+static void __rvu_rpm_set_channels(int cgxid, int lmacid, u16 base)
+{
+	u64 cfg;
+
+	cfg = cgx_lmac_read(cgxid, lmacid, RPMX_CMRX_LINK_CFG);
+	cfg &= ~(RPMX_CMRX_LINK_BASE_MASK | RPMX_CMRX_LINK_RANGE_MASK);
+
+	/* There is no read-only constant register to read
+	 * the number of channels for LMAC and it is always 16.
+	 */
+	cfg |=	FIELD_PREP(RPMX_CMRX_LINK_RANGE_MASK, ilog2(16));
+	cfg |=	FIELD_PREP(RPMX_CMRX_LINK_BASE_MASK, base);
+	cgx_lmac_write(cgxid, lmacid, RPMX_CMRX_LINK_CFG, cfg);
+}
+
+static void rvu_rpm_set_channels(struct rvu *rvu)
+{
+	struct rvu_hwinfo *hw = rvu->hw;
+	u16 base = hw->cgx_chan_base;
+	int cgx, lmac;
+
+	for (cgx = 0; cgx < rvu->cgx_cnt_max; cgx++) {
+		for (lmac = 0; lmac < hw->lmac_per_cgx; lmac++) {
+			__rvu_rpm_set_channels(cgx, lmac, base);
+			base += 16;
+		}
+	}
+}
+
+void rvu_program_channels(struct rvu *rvu)
+{
+	struct rvu_hwinfo *hw = rvu->hw;
+
+	if (!hw->cap.programmable_chans)
+		return;
+
+	rvu_nix_set_channels(rvu);
+	rvu_lbk_set_channels(rvu);
+	rvu_rpm_set_channels(rvu);
+}
+
+void rvu_nix_block_cn10k_init(struct rvu *rvu, struct nix_hw *nix_hw)
+{
+	int blkaddr = nix_hw->blkaddr;
+	u64 cfg;
+
+	/* Set AF vWQE timer interval to a LF configurable range of
+	 * 6.4us to 1.632ms.
+	 */
+	rvu_write64(rvu, blkaddr, NIX_AF_VWQE_TIMER, 0x3FULL);
+
+	/* Enable NIX RX stream and global conditional clock to
+	 * avoild multiple free of NPA buffers.
+	 */
+	cfg = rvu_read64(rvu, blkaddr, NIX_AF_CFG);
+	cfg |= BIT_ULL(1) | BIT_ULL(2);
+	rvu_write64(rvu, blkaddr, NIX_AF_CFG, cfg);
+}