// SPDX-License-Identifier: GPL-2.0
/* Marvell RVU Admin Function driver
 *
 * Copyright (C) 2018 Marvell.
 *
 */

#include <linux/bitfield.h>
#include <linux/module.h>
#include <linux/pci.h>

#include "rvu_struct.h"
#include "rvu_reg.h"
#include "rvu.h"
#include "npc.h"
#include "cgx.h"
#include "npc_profile.h"

#define RSVD_MCAM_ENTRIES_PER_PF        3 /* Broadcast, Promisc and AllMulticast */
#define RSVD_MCAM_ENTRIES_PER_NIXLF     1 /* Ucast for LFs */

#define NPC_PARSE_RESULT_DMAC_OFFSET    8
#define NPC_HW_TSTAMP_OFFSET            8ULL
#define NPC_KEX_CHAN_MASK               0xFFFULL
#define NPC_KEX_PF_FUNC_MASK            0xFFFFULL

#define ALIGN_8B_CEIL(__a)      (((__a) + 7) & (-8))

static const char def_pfl_name[] = "default";

static void npc_mcam_free_all_entries(struct rvu *rvu, struct npc_mcam *mcam,
                                      int blkaddr, u16 pcifunc);
static void npc_mcam_free_all_counters(struct rvu *rvu, struct npc_mcam *mcam,
                                       u16 pcifunc);

bool is_npc_intf_tx(u8 intf)
{
        return !!(intf & 0x1);
}

bool is_npc_intf_rx(u8 intf)
{
        return !(intf & 0x1);
}

bool is_npc_interface_valid(struct rvu *rvu, u8 intf)
{
        struct rvu_hwinfo *hw = rvu->hw;

        return intf < hw->npc_intfs;
}

int rvu_npc_get_tx_nibble_cfg(struct rvu *rvu, u64 nibble_ena)
{
        /* Due to a HW issue in these silicon versions, parse nibble enable
         * configuration has to be identical for both Rx and Tx interfaces.
         */
        if (is_rvu_96xx_B0(rvu))
                return nibble_ena;
        return 0;
}

static int npc_mcam_verify_pf_func(struct rvu *rvu,
                                   struct mcam_entry *entry_data, u8 intf,
                                   u16 pcifunc)
{
        u16 pf_func, pf_func_mask;

        if (is_npc_intf_rx(intf))
                return 0;

        pf_func_mask = (entry_data->kw_mask[0] >> 32) &
                NPC_KEX_PF_FUNC_MASK;
        pf_func = (entry_data->kw[0] >> 32) & NPC_KEX_PF_FUNC_MASK;

        pf_func = be16_to_cpu((__force __be16)pf_func);
        if (pf_func_mask != NPC_KEX_PF_FUNC_MASK ||
            ((pf_func & ~RVU_PFVF_FUNC_MASK) !=
             (pcifunc & ~RVU_PFVF_FUNC_MASK)))
                return -EINVAL;

        return 0;
}

void rvu_npc_set_pkind(struct rvu *rvu, int pkind, struct rvu_pfvf *pfvf)
{
        int blkaddr;
        u64 val = 0;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        /* Config CPI base for the PKIND */
        val = pkind | 1ULL << 62;
        rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_CPI_DEFX(pkind, 0), val);
}

int rvu_npc_get_pkind(struct rvu *rvu, u16 pf)
{
        struct npc_pkind *pkind = &rvu->hw->pkind;
        u32 map;
        int i;

        for (i = 0; i < pkind->rsrc.max; i++) {
                map = pkind->pfchan_map[i];
                if (((map >> 16) & 0x3F) == pf)
                        return i;
        }
        return -1;
}

#define NPC_AF_ACTION0_PTR_ADVANCE      GENMASK_ULL(27, 20)

int npc_config_ts_kpuaction(struct rvu *rvu, int pf, u16 pcifunc, bool enable)
{
        int pkind, blkaddr;
        u64 val;

        pkind = rvu_npc_get_pkind(rvu, pf);
        if (pkind < 0) {
                dev_err(rvu->dev, "%s: pkind not mapped\n", __func__);
                return -EINVAL;
        }

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, pcifunc);
        if (blkaddr < 0) {
                dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
                return -EINVAL;
        }

        val = rvu_read64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind));
        val &= ~NPC_AF_ACTION0_PTR_ADVANCE;
        /* If timestamp is enabled then configure NPC to shift 8 bytes */
        if (enable)
                val |= FIELD_PREP(NPC_AF_ACTION0_PTR_ADVANCE,
                                  NPC_HW_TSTAMP_OFFSET);
        rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind), val);

        return 0;
}

static int npc_get_ucast_mcam_index(struct npc_mcam *mcam, u16 pcifunc,
                                    int nixlf)
{
        struct rvu_hwinfo *hw = container_of(mcam, struct rvu_hwinfo, mcam);
        struct rvu *rvu = hw->rvu;
        int blkaddr = 0, max = 0;
        struct rvu_block *block;
        struct rvu_pfvf *pfvf;

        pfvf = rvu_get_pfvf(rvu, pcifunc);
        /* Given a PF/VF and NIX LF number calculate the unicast mcam
         * entry index based on the NIX block assigned to the PF/VF.
         */
        blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
        while (blkaddr) {
                if (pfvf->nix_blkaddr == blkaddr)
                        break;
                block = &rvu->hw->block[blkaddr];
                max += block->lf.max;
                blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
        }

        return mcam->nixlf_offset + (max + nixlf) * RSVD_MCAM_ENTRIES_PER_NIXLF;
}

int npc_get_nixlf_mcam_index(struct npc_mcam *mcam,
                             u16 pcifunc, int nixlf, int type)
{
        int pf = rvu_get_pf(pcifunc);
        int index;

        /* Check if this is for a PF */
        if (pf && !(pcifunc & RVU_PFVF_FUNC_MASK)) {
                /* Reserved entries exclude PF0 */
                pf--;
                index = mcam->pf_offset + (pf * RSVD_MCAM_ENTRIES_PER_PF);
                /* Broadcast address matching entry should be first so
                 * that the packet can be replicated to all VFs.
                 */
                if (type == NIXLF_BCAST_ENTRY)
                        return index;
                else if (type == NIXLF_ALLMULTI_ENTRY)
                        return index + 1;
                else if (type == NIXLF_PROMISC_ENTRY)
                        return index + 2;
        }

        return npc_get_ucast_mcam_index(mcam, pcifunc, nixlf);
}

int npc_get_bank(struct npc_mcam *mcam, int index)
{
        int bank = index / mcam->banksize;

        /* 0,1 & 2,3 banks are combined for this keysize */
        if (mcam->keysize == NPC_MCAM_KEY_X2)
                return bank ? 2 : 0;

        return bank;
}

bool is_mcam_entry_enabled(struct rvu *rvu, struct npc_mcam *mcam,
                           int blkaddr, int index)
{
        int bank = npc_get_bank(mcam, index);
        u64 cfg;

        index &= (mcam->banksize - 1);
        cfg = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CFG(index, bank));
        return (cfg & 1);
}

void npc_enable_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
                           int blkaddr, int index, bool enable)
{
        int bank = npc_get_bank(mcam, index);
        int actbank = bank;

        index &= (mcam->banksize - 1);
        for (; bank < (actbank + mcam->banks_per_entry); bank++) {
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CFG(index, bank),
                            enable ? 1 : 0);
        }
}

static void npc_clear_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
                                 int blkaddr, int index)
{
        int bank = npc_get_bank(mcam, index);
        int actbank = bank;

        index &= (mcam->banksize - 1);
        for (; bank < (actbank + mcam->banks_per_entry); bank++) {
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 1), 0);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 0), 0);

                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 1), 0);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 0), 0);

                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 1), 0);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 0), 0);
        }
}

static void npc_get_keyword(struct mcam_entry *entry, int idx,
                            u64 *cam0, u64 *cam1)
{
        u64 kw_mask = 0x00;

#define CAM_MASK(n)     (BIT_ULL(n) - 1)

        /* 0, 2, 4, 6 indices refer to BANKX_CAMX_W0 and
         * 1, 3, 5, 7 indices refer to BANKX_CAMX_W1.
         *
         * Also, only 48 bits of BANKX_CAMX_W1 are valid.
         */
        switch (idx) {
        case 0:
                /* BANK(X)_CAM_W0<63:0> = MCAM_KEY[KW0]<63:0> */
                *cam1 = entry->kw[0];
                kw_mask = entry->kw_mask[0];
                break;
        case 1:
                /* BANK(X)_CAM_W1<47:0> = MCAM_KEY[KW1]<47:0> */
                *cam1 = entry->kw[1] & CAM_MASK(48);
                kw_mask = entry->kw_mask[1] & CAM_MASK(48);
                break;
        case 2:
                /* BANK(X + 1)_CAM_W0<15:0> = MCAM_KEY[KW1]<63:48>
                 * BANK(X + 1)_CAM_W0<63:16> = MCAM_KEY[KW2]<47:0>
                 */
                *cam1 = (entry->kw[1] >> 48) & CAM_MASK(16);
                *cam1 |= ((entry->kw[2] & CAM_MASK(48)) << 16);
                kw_mask = (entry->kw_mask[1] >> 48) & CAM_MASK(16);
                kw_mask |= ((entry->kw_mask[2] & CAM_MASK(48)) << 16);
                break;
        case 3:
                /* BANK(X + 1)_CAM_W1<15:0> = MCAM_KEY[KW2]<63:48>
                 * BANK(X + 1)_CAM_W1<47:16> = MCAM_KEY[KW3]<31:0>
                 */
                *cam1 = (entry->kw[2] >> 48) & CAM_MASK(16);
                *cam1 |= ((entry->kw[3] & CAM_MASK(32)) << 16);
                kw_mask = (entry->kw_mask[2] >> 48) & CAM_MASK(16);
                kw_mask |= ((entry->kw_mask[3] & CAM_MASK(32)) << 16);
                break;
        case 4:
                /* BANK(X + 2)_CAM_W0<31:0> = MCAM_KEY[KW3]<63:32>
                 * BANK(X + 2)_CAM_W0<63:32> = MCAM_KEY[KW4]<31:0>
                 */
                *cam1 = (entry->kw[3] >> 32) & CAM_MASK(32);
                *cam1 |= ((entry->kw[4] & CAM_MASK(32)) << 32);
                kw_mask = (entry->kw_mask[3] >> 32) & CAM_MASK(32);
                kw_mask |= ((entry->kw_mask[4] & CAM_MASK(32)) << 32);
                break;
        case 5:
                /* BANK(X + 2)_CAM_W1<31:0> = MCAM_KEY[KW4]<63:32>
                 * BANK(X + 2)_CAM_W1<47:32> = MCAM_KEY[KW5]<15:0>
                 */
                *cam1 = (entry->kw[4] >> 32) & CAM_MASK(32);
                *cam1 |= ((entry->kw[5] & CAM_MASK(16)) << 32);
                kw_mask = (entry->kw_mask[4] >> 32) & CAM_MASK(32);
                kw_mask |= ((entry->kw_mask[5] & CAM_MASK(16)) << 32);
                break;
        case 6:
                /* BANK(X + 3)_CAM_W0<47:0> = MCAM_KEY[KW5]<63:16>
                 * BANK(X + 3)_CAM_W0<63:48> = MCAM_KEY[KW6]<15:0>
                 */
                *cam1 = (entry->kw[5] >> 16) & CAM_MASK(48);
                *cam1 |= ((entry->kw[6] & CAM_MASK(16)) << 48);
                kw_mask = (entry->kw_mask[5] >> 16) & CAM_MASK(48);
                kw_mask |= ((entry->kw_mask[6] & CAM_MASK(16)) << 48);
                break;
        case 7:
                /* BANK(X + 3)_CAM_W1<47:0> = MCAM_KEY[KW6]<63:16> */
                *cam1 = (entry->kw[6] >> 16) & CAM_MASK(48);
                kw_mask = (entry->kw_mask[6] >> 16) & CAM_MASK(48);
                break;
        }

        *cam1 &= kw_mask;
        *cam0 = ~*cam1 & kw_mask;
}

static void npc_fill_entryword(struct mcam_entry *entry, int idx,
                               u64 cam0, u64 cam1)
{
        /* Similar to npc_get_keyword, but fills mcam_entry structure from
         * CAM registers.
         */
        switch (idx) {
        case 0:
                entry->kw[0] = cam1;
                entry->kw_mask[0] = cam1 ^ cam0;
                break;
        case 1:
                entry->kw[1] = cam1;
                entry->kw_mask[1] = cam1 ^ cam0;
                break;
        case 2:
                entry->kw[1] |= (cam1 & CAM_MASK(16)) << 48;
                entry->kw[2] = (cam1 >> 16) & CAM_MASK(48);
                entry->kw_mask[1] |= ((cam1 ^ cam0) & CAM_MASK(16)) << 48;
                entry->kw_mask[2] = ((cam1 ^ cam0) >> 16) & CAM_MASK(48);
                break;
        case 3:
                entry->kw[2] |= (cam1 & CAM_MASK(16)) << 48;
                entry->kw[3] = (cam1 >> 16) & CAM_MASK(32);
                entry->kw_mask[2] |= ((cam1 ^ cam0) & CAM_MASK(16)) << 48;
                entry->kw_mask[3] = ((cam1 ^ cam0) >> 16) & CAM_MASK(32);
                break;
        case 4:
                entry->kw[3] |= (cam1 & CAM_MASK(32)) << 32;
                entry->kw[4] = (cam1 >> 32) & CAM_MASK(32);
                entry->kw_mask[3] |= ((cam1 ^ cam0) & CAM_MASK(32)) << 32;
                entry->kw_mask[4] = ((cam1 ^ cam0) >> 32) & CAM_MASK(32);
                break;
        case 5:
                entry->kw[4] |= (cam1 & CAM_MASK(32)) << 32;
                entry->kw[5] = (cam1 >> 32) & CAM_MASK(16);
                entry->kw_mask[4] |= ((cam1 ^ cam0) & CAM_MASK(32)) << 32;
                entry->kw_mask[5] = ((cam1 ^ cam0) >> 32) & CAM_MASK(16);
                break;
        case 6:
                entry->kw[5] |= (cam1 & CAM_MASK(48)) << 16;
                entry->kw[6] = (cam1 >> 48) & CAM_MASK(16);
                entry->kw_mask[5] |= ((cam1 ^ cam0) & CAM_MASK(48)) << 16;
                entry->kw_mask[6] = ((cam1 ^ cam0) >> 48) & CAM_MASK(16);
                break;
        case 7:
                entry->kw[6] |= (cam1 & CAM_MASK(48)) << 16;
                entry->kw_mask[6] |= ((cam1 ^ cam0) & CAM_MASK(48)) << 16;
                break;
        }
}

static u64 npc_get_default_entry_action(struct rvu *rvu, struct npc_mcam *mcam,
                                        int blkaddr, u16 pf_func)
{
        int bank, nixlf, index;

        /* get ucast entry rule entry index */
        nix_get_nixlf(rvu, pf_func, &nixlf, NULL);
        index = npc_get_nixlf_mcam_index(mcam, pf_func, nixlf,
                                         NIXLF_UCAST_ENTRY);
        bank = npc_get_bank(mcam, index);
        index &= (mcam->banksize - 1);

        return rvu_read64(rvu, blkaddr,
                          NPC_AF_MCAMEX_BANKX_ACTION(index, bank));
}

static void npc_fixup_vf_rule(struct rvu *rvu, struct npc_mcam *mcam,
                              int blkaddr, int index, struct mcam_entry *entry,
                              bool *enable)
{
        u16 owner, target_func;
        struct rvu_pfvf *pfvf;
        u64 rx_action;

        owner = mcam->entry2pfvf_map[index];
        target_func = (entry->action >> 4) & 0xffff;
        /* do nothing when target is LBK/PF or owner is not PF */
        if (is_pffunc_af(owner) || is_afvf(target_func) ||
            (owner & RVU_PFVF_FUNC_MASK) ||
            !(target_func & RVU_PFVF_FUNC_MASK))
                return;

        /* save entry2target_pffunc */
        pfvf = rvu_get_pfvf(rvu, target_func);
        mcam->entry2target_pffunc[index] = target_func;

        /* don't enable rule when nixlf not attached or initialized */
        if (!(is_nixlf_attached(rvu, target_func) &&
              test_bit(NIXLF_INITIALIZED, &pfvf->flags)))
                *enable = false;

        /* copy VF default entry action to the VF mcam entry */
        rx_action = npc_get_default_entry_action(rvu, mcam, blkaddr,
                                                 target_func);
        if (rx_action)
                entry->action = rx_action;
}

static void npc_config_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
                                  int blkaddr, int index, u8 intf,
                                  struct mcam_entry *entry, bool enable)
{
        int bank = npc_get_bank(mcam, index);
        int kw = 0, actbank, actindex;
        u8 tx_intf_mask = ~intf & 0x3;
        u8 tx_intf = intf;
        u64 cam0, cam1;

        actbank = bank; /* Save bank id, to set action later on */
        actindex = index;
        index &= (mcam->banksize - 1);

        /* Disable before mcam entry update */
        npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex, false);

        /* Clear mcam entry to avoid writes being suppressed by NPC */
        npc_clear_mcam_entry(rvu, mcam, blkaddr, actindex);

        /* CAM1 takes the comparison value and
         * CAM0 specifies match for a bit in key being '0' or '1' or 'dontcare'.
         * CAM1<n> = 0 & CAM0<n> = 1 => match if key<n> = 0
         * CAM1<n> = 1 & CAM0<n> = 0 => match if key<n> = 1
         * CAM1<n> = 0 & CAM0<n> = 0 => always match i.e dontcare.
         */
        for (; bank < (actbank + mcam->banks_per_entry); bank++, kw = kw + 2) {
                /* Interface should be set in all banks */
                if (is_npc_intf_tx(intf)) {
                        /* Last bit must be set and rest don't care
                         * for TX interfaces
                         */
                        tx_intf_mask = 0x1;
                        tx_intf = intf & tx_intf_mask;
                        tx_intf_mask = ~tx_intf & tx_intf_mask;
                }

                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 1),
                            tx_intf);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 0),
                            tx_intf_mask);

                /* Set the match key */
                npc_get_keyword(entry, kw, &cam0, &cam1);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 1), cam1);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 0), cam0);

                npc_get_keyword(entry, kw + 1, &cam0, &cam1);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 1), cam1);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 0), cam0);
        }

        /* PF installing VF rule */
        if (intf == NIX_INTF_RX && actindex < mcam->bmap_entries)
                npc_fixup_vf_rule(rvu, mcam, blkaddr, index, entry, &enable);

        /* Set 'action' */
        rvu_write64(rvu, blkaddr,
                    NPC_AF_MCAMEX_BANKX_ACTION(index, actbank), entry->action);

        /* Set TAG 'action' */
        rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_TAG_ACT(index, actbank),
                    entry->vtag_action);

        /* Enable the entry */
        if (enable)
                npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex, true);
}

void npc_read_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
                         int blkaddr, u16 src,
                         struct mcam_entry *entry, u8 *intf, u8 *ena)
{
        int sbank = npc_get_bank(mcam, src);
        int bank, kw = 0;
        u64 cam0, cam1;

        src &= (mcam->banksize - 1);
        bank = sbank;

        for (; bank < (sbank + mcam->banks_per_entry); bank++, kw = kw + 2) {
                cam1 = rvu_read64(rvu, blkaddr,
                                  NPC_AF_MCAMEX_BANKX_CAMX_W0(src, bank, 1));
                cam0 = rvu_read64(rvu, blkaddr,
                                  NPC_AF_MCAMEX_BANKX_CAMX_W0(src, bank, 0));
                npc_fill_entryword(entry, kw, cam0, cam1);

                cam1 = rvu_read64(rvu, blkaddr,
                                  NPC_AF_MCAMEX_BANKX_CAMX_W1(src, bank, 1));
                cam0 = rvu_read64(rvu, blkaddr,
                                  NPC_AF_MCAMEX_BANKX_CAMX_W1(src, bank, 0));
                npc_fill_entryword(entry, kw + 1, cam0, cam1);
        }

        entry->action = rvu_read64(rvu, blkaddr,
                                   NPC_AF_MCAMEX_BANKX_ACTION(src, sbank));
        entry->vtag_action =
                rvu_read64(rvu, blkaddr,
                           NPC_AF_MCAMEX_BANKX_TAG_ACT(src, sbank));
        *intf = rvu_read64(rvu, blkaddr,
                           NPC_AF_MCAMEX_BANKX_CAMX_INTF(src, sbank, 1)) & 3;
        *ena = rvu_read64(rvu, blkaddr,
                          NPC_AF_MCAMEX_BANKX_CFG(src, sbank)) & 1;
}

static void npc_copy_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
                                int blkaddr, u16 src, u16 dest)
{
        int dbank = npc_get_bank(mcam, dest);
        int sbank = npc_get_bank(mcam, src);
        u64 cfg, sreg, dreg;
        int bank, i;

        src &= (mcam->banksize - 1);
        dest &= (mcam->banksize - 1);

        /* Copy INTF's, W0's, W1's CAM0 and CAM1 configuration */
        for (bank = 0; bank < mcam->banks_per_entry; bank++) {
                sreg = NPC_AF_MCAMEX_BANKX_CAMX_INTF(src, sbank + bank, 0);
                dreg = NPC_AF_MCAMEX_BANKX_CAMX_INTF(dest, dbank + bank, 0);
                for (i = 0; i < 6; i++) {
                        cfg = rvu_read64(rvu, blkaddr, sreg + (i * 8));
                        rvu_write64(rvu, blkaddr, dreg + (i * 8), cfg);
                }
        }

        /* Copy action */
        cfg = rvu_read64(rvu, blkaddr,
                         NPC_AF_MCAMEX_BANKX_ACTION(src, sbank));
        rvu_write64(rvu, blkaddr,
                    NPC_AF_MCAMEX_BANKX_ACTION(dest, dbank), cfg);

        /* Copy TAG action */
        cfg = rvu_read64(rvu, blkaddr,
                         NPC_AF_MCAMEX_BANKX_TAG_ACT(src, sbank));
        rvu_write64(rvu, blkaddr,
                    NPC_AF_MCAMEX_BANKX_TAG_ACT(dest, dbank), cfg);

        /* Enable or disable */
        cfg = rvu_read64(rvu, blkaddr,
                         NPC_AF_MCAMEX_BANKX_CFG(src, sbank));
        rvu_write64(rvu, blkaddr,
                    NPC_AF_MCAMEX_BANKX_CFG(dest, dbank), cfg);
}

static u64 npc_get_mcam_action(struct rvu *rvu, struct npc_mcam *mcam,
                               int blkaddr, int index)
{
        int bank = npc_get_bank(mcam, index);

        index &= (mcam->banksize - 1);
        return rvu_read64(rvu, blkaddr,
                          NPC_AF_MCAMEX_BANKX_ACTION(index, bank));
}

void rvu_npc_install_ucast_entry(struct rvu *rvu, u16 pcifunc,
                                 int nixlf, u64 chan, u8 *mac_addr)
{
        struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
        struct npc_install_flow_req req = { 0 };
        struct npc_install_flow_rsp rsp = { 0 };
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct nix_rx_action action;
        int blkaddr, index;

        /* AF's and SDP VFs work in promiscuous mode */
        if (is_afvf(pcifunc) || is_sdp_vf(pcifunc))
                return;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        index = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                         nixlf, NIXLF_UCAST_ENTRY);

        /* Don't change the action if entry is already enabled
         * Otherwise RSS action may get overwritten.
         */
        if (is_mcam_entry_enabled(rvu, mcam, blkaddr, index)) {
                *(u64 *)&action = npc_get_mcam_action(rvu, mcam,
                                                      blkaddr, index);
        } else {
                *(u64 *)&action = 0x00;
                action.op = NIX_RX_ACTIONOP_UCAST;
                action.pf_func = pcifunc;
        }

        req.default_rule = 1;
        ether_addr_copy(req.packet.dmac, mac_addr);
        eth_broadcast_addr((u8 *)&req.mask.dmac);
        req.features = BIT_ULL(NPC_DMAC);
        req.channel = chan;
        req.chan_mask = 0xFFFU;
        req.intf = pfvf->nix_rx_intf;
        req.op = action.op;
        req.hdr.pcifunc = 0; /* AF is requester */
        req.vf = action.pf_func;
        req.index = action.index;
        req.match_id = action.match_id;
        req.flow_key_alg = action.flow_key_alg;

        rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
}

void rvu_npc_install_promisc_entry(struct rvu *rvu, u16 pcifunc,
                                   int nixlf, u64 chan, u8 chan_cnt)
{
        struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
        struct npc_install_flow_req req = { 0 };
        struct npc_install_flow_rsp rsp = { 0 };
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_hwinfo *hw = rvu->hw;
        int blkaddr, ucast_idx, index;
        struct nix_rx_action action;
        u64 relaxed_mask;

        if (!hw->cap.nix_rx_multicast && is_cgx_vf(rvu, pcifunc))
                return;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        index = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                         nixlf, NIXLF_PROMISC_ENTRY);

        if (is_cgx_vf(rvu, pcifunc))
                index = npc_get_nixlf_mcam_index(mcam,
                                                 pcifunc & ~RVU_PFVF_FUNC_MASK,
                                                 nixlf, NIXLF_PROMISC_ENTRY);

        /* If the corresponding PF's ucast action is RSS,
         * use the same action for promisc also
         */
        ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                             nixlf, NIXLF_UCAST_ENTRY);
        if (is_mcam_entry_enabled(rvu, mcam, blkaddr, ucast_idx))
                *(u64 *)&action = npc_get_mcam_action(rvu, mcam,
                                                      blkaddr, ucast_idx);

        if (action.op != NIX_RX_ACTIONOP_RSS) {
                *(u64 *)&action = 0x00;
                action.op = NIX_RX_ACTIONOP_UCAST;
        }

        /* RX_ACTION set to MCAST for CGX PF's */
        if (hw->cap.nix_rx_multicast && pfvf->use_mce_list &&
            is_pf_cgxmapped(rvu, rvu_get_pf(pcifunc))) {
                *(u64 *)&action = 0x00;
                action.op = NIX_RX_ACTIONOP_MCAST;
                pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK);
                action.index = pfvf->promisc_mce_idx;
        }

        /* For cn10k the upper two bits of the channel number are
         * cpt channel number. with masking out these bits in the
         * mcam entry, same entry used for NIX will allow packets
         * received from cpt for parsing.
         */
        if (!is_rvu_otx2(rvu)) {
                req.chan_mask = NIX_CHAN_CPT_X2P_MASK;
        } else {
                req.chan_mask = 0xFFFU;
        }

        if (chan_cnt > 1) {
                if (!is_power_of_2(chan_cnt)) {
                        dev_err(rvu->dev,
                                "%s: channel count more than 1, must be power of 2\n", __func__);
                        return;
                }
                relaxed_mask = GENMASK_ULL(BITS_PER_LONG_LONG - 1,
                                           ilog2(chan_cnt));
                req.chan_mask &= relaxed_mask;
        }

        req.channel = chan;
        req.intf = pfvf->nix_rx_intf;
        req.entry = index;
        req.op = action.op;
        req.hdr.pcifunc = 0; /* AF is requester */
        req.vf = pcifunc;
        req.index = action.index;
        req.match_id = action.match_id;
        req.flow_key_alg = action.flow_key_alg;

        rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
}

void rvu_npc_enable_promisc_entry(struct rvu *rvu, u16 pcifunc,
                                  int nixlf, bool enable)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int blkaddr, index;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        /* Get 'pcifunc' of PF device */
        pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;

        index = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                         nixlf, NIXLF_PROMISC_ENTRY);
        npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
}

void rvu_npc_install_bcast_match_entry(struct rvu *rvu, u16 pcifunc,
                                       int nixlf, u64 chan)
{
        struct rvu_pfvf *pfvf;
        struct npc_install_flow_req req = { 0 };
        struct npc_install_flow_rsp rsp = { 0 };
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_hwinfo *hw = rvu->hw;
        int blkaddr, index;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        /* Skip LBK VFs */
        if (is_afvf(pcifunc))
                return;

        /* If pkt replication is not supported,
         * then only PF is allowed to add a bcast match entry.
         */
        if (!hw->cap.nix_rx_multicast && is_vf(pcifunc))
                return;

        /* Get 'pcifunc' of PF device */
        pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;
        pfvf = rvu_get_pfvf(rvu, pcifunc);
        index = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                         nixlf, NIXLF_BCAST_ENTRY);

        if (!hw->cap.nix_rx_multicast) {
                /* Early silicon doesn't support pkt replication,
                 * so install entry with UCAST action, so that PF
                 * receives all broadcast packets.
                 */
                req.op = NIX_RX_ACTIONOP_UCAST;
        } else {
                req.op = NIX_RX_ACTIONOP_MCAST;
                req.index = pfvf->bcast_mce_idx;
        }

        eth_broadcast_addr((u8 *)&req.packet.dmac);
        eth_broadcast_addr((u8 *)&req.mask.dmac);
        req.features = BIT_ULL(NPC_DMAC);
        req.channel = chan;
        req.chan_mask = 0xFFFU;
        req.intf = pfvf->nix_rx_intf;
        req.entry = index;
        req.hdr.pcifunc = 0; /* AF is requester */
        req.vf = pcifunc;

        rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
}

void rvu_npc_enable_bcast_entry(struct rvu *rvu, u16 pcifunc, int nixlf,
                                bool enable)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int blkaddr, index;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        /* Get 'pcifunc' of PF device */
        pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;

        index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf,
                                         NIXLF_BCAST_ENTRY);
        npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
}

void rvu_npc_install_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf,
                                    u64 chan)
{
        struct npc_install_flow_req req = { 0 };
        struct npc_install_flow_rsp rsp = { 0 };
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_hwinfo *hw = rvu->hw;
        int blkaddr, ucast_idx, index;
        u8 mac_addr[ETH_ALEN] = { 0 };
        struct nix_rx_action action;
        struct rvu_pfvf *pfvf;
        u16 vf_func;

        /* Only CGX PF/VF can add allmulticast entry */
        if (is_afvf(pcifunc) && is_sdp_vf(pcifunc))
                return;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        /* Get 'pcifunc' of PF device */
        vf_func = pcifunc & RVU_PFVF_FUNC_MASK;
        pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;
        pfvf = rvu_get_pfvf(rvu, pcifunc);
        index = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                         nixlf, NIXLF_ALLMULTI_ENTRY);

        /* If the corresponding PF's ucast action is RSS,
         * use the same action for multicast entry also
         */
        ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                             nixlf, NIXLF_UCAST_ENTRY);
        if (is_mcam_entry_enabled(rvu, mcam, blkaddr, ucast_idx))
                *(u64 *)&action = npc_get_mcam_action(rvu, mcam,
                                                        blkaddr, ucast_idx);

        if (action.op != NIX_RX_ACTIONOP_RSS) {
                *(u64 *)&action = 0x00;
                action.op = NIX_RX_ACTIONOP_UCAST;
                action.pf_func = pcifunc;
        }

        /* RX_ACTION set to MCAST for CGX PF's */
        if (hw->cap.nix_rx_multicast && pfvf->use_mce_list) {
                *(u64 *)&action = 0x00;
                action.op = NIX_RX_ACTIONOP_MCAST;
                action.index = pfvf->mcast_mce_idx;
        }

        mac_addr[0] = 0x01;     /* LSB bit of 1st byte in DMAC */
        ether_addr_copy(req.packet.dmac, mac_addr);
        ether_addr_copy(req.mask.dmac, mac_addr);
        req.features = BIT_ULL(NPC_DMAC);

        /* For cn10k the upper two bits of the channel number are
         * cpt channel number. with masking out these bits in the
         * mcam entry, same entry used for NIX will allow packets
         * received from cpt for parsing.
         */
        if (!is_rvu_otx2(rvu))
                req.chan_mask = NIX_CHAN_CPT_X2P_MASK;
        else
                req.chan_mask = 0xFFFU;

        req.channel = chan;
        req.intf = pfvf->nix_rx_intf;
        req.entry = index;
        req.op = action.op;
        req.hdr.pcifunc = 0; /* AF is requester */
        req.vf = pcifunc | vf_func;
        req.index = action.index;
        req.match_id = action.match_id;
        req.flow_key_alg = action.flow_key_alg;

        rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
}

void rvu_npc_enable_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf,
                                   bool enable)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int blkaddr, index;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        /* Get 'pcifunc' of PF device */
        pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;

        index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf,
                                         NIXLF_ALLMULTI_ENTRY);
        npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
}

static void npc_update_vf_flow_entry(struct rvu *rvu, struct npc_mcam *mcam,
                                     int blkaddr, u16 pcifunc, u64 rx_action)
{
        int actindex, index, bank, entry;
        bool enable;

        if (!(pcifunc & RVU_PFVF_FUNC_MASK))
                return;

        mutex_lock(&mcam->lock);
        for (index = 0; index < mcam->bmap_entries; index++) {
                if (mcam->entry2target_pffunc[index] == pcifunc) {
                        bank = npc_get_bank(mcam, index);
                        actindex = index;
                        entry = index & (mcam->banksize - 1);

                        /* read vf flow entry enable status */
                        enable = is_mcam_entry_enabled(rvu, mcam, blkaddr,
                                                       actindex);
                        /* disable before mcam entry update */
                        npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex,
                                              false);
                        /* update 'action' */
                        rvu_write64(rvu, blkaddr,
                                    NPC_AF_MCAMEX_BANKX_ACTION(entry, bank),
                                    rx_action);
                        if (enable)
                                npc_enable_mcam_entry(rvu, mcam, blkaddr,
                                                      actindex, true);
                }
        }
        mutex_unlock(&mcam->lock);
}

void rvu_npc_update_flowkey_alg_idx(struct rvu *rvu, u16 pcifunc, int nixlf,
                                    int group, int alg_idx, int mcam_index)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_hwinfo *hw = rvu->hw;
        struct nix_rx_action action;
        int blkaddr, index, bank;
        struct rvu_pfvf *pfvf;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        /* Check if this is for reserved default entry */
        if (mcam_index < 0) {
                if (group != DEFAULT_RSS_CONTEXT_GROUP)
                        return;
                index = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                                 nixlf, NIXLF_UCAST_ENTRY);
        } else {
                /* TODO: validate this mcam index */
                index = mcam_index;
        }

        if (index >= mcam->total_entries)
                return;

        bank = npc_get_bank(mcam, index);
        index &= (mcam->banksize - 1);

        *(u64 *)&action = rvu_read64(rvu, blkaddr,
                                     NPC_AF_MCAMEX_BANKX_ACTION(index, bank));
        /* Ignore if no action was set earlier */
        if (!*(u64 *)&action)
                return;

        action.op = NIX_RX_ACTIONOP_RSS;
        action.pf_func = pcifunc;
        action.index = group;
        action.flow_key_alg = alg_idx;

        rvu_write64(rvu, blkaddr,
                    NPC_AF_MCAMEX_BANKX_ACTION(index, bank), *(u64 *)&action);

        /* update the VF flow rule action with the VF default entry action */
        if (mcam_index < 0)
                npc_update_vf_flow_entry(rvu, mcam, blkaddr, pcifunc,
                                         *(u64 *)&action);

        /* update the action change in default rule */
        pfvf = rvu_get_pfvf(rvu, pcifunc);
        if (pfvf->def_ucast_rule)

                pfvf->def_ucast_rule->rx_action = action;

        index = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                         nixlf, NIXLF_PROMISC_ENTRY);

        /* If PF's promiscuous entry is enabled,
         * Set RSS action for that entry as well
         */
        if ((!hw->cap.nix_rx_multicast || !pfvf->use_mce_list) &&
            is_mcam_entry_enabled(rvu, mcam, blkaddr, index)) {
                bank = npc_get_bank(mcam, index);
                index &= (mcam->banksize - 1);

                rvu_write64(rvu, blkaddr,
                            NPC_AF_MCAMEX_BANKX_ACTION(index, bank),
                            *(u64 *)&action);
        }
}

void npc_enadis_default_mce_entry(struct rvu *rvu, u16 pcifunc,
                                  int nixlf, int type, bool enable)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_hwinfo *hw = rvu->hw;
        struct nix_mce_list *mce_list;
        int index, blkaddr, mce_idx;
        struct rvu_pfvf *pfvf;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        index = npc_get_nixlf_mcam_index(mcam, pcifunc & ~RVU_PFVF_FUNC_MASK,
                                         nixlf, type);

        /* disable MCAM entry when packet replication is not supported by hw */
        if (!hw->cap.nix_rx_multicast && !is_vf(pcifunc)) {
                npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
                return;
        }

        /* return incase mce list is not enabled */
        pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK);
        if (hw->cap.nix_rx_multicast && is_vf(pcifunc) &&
            type != NIXLF_BCAST_ENTRY && !pfvf->use_mce_list)
                return;

        nix_get_mce_list(rvu, pcifunc, type, &mce_list, &mce_idx);

        nix_update_mce_list(rvu, pcifunc, mce_list,
                            mce_idx, index, enable);
        if (enable)
                npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
}

static void npc_enadis_default_entries(struct rvu *rvu, u16 pcifunc,
                                       int nixlf, bool enable)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int index, blkaddr;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        /* Ucast MCAM match entry of this PF/VF */
        index = npc_get_nixlf_mcam_index(mcam, pcifunc,
                                         nixlf, NIXLF_UCAST_ENTRY);
        npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);

        /* Nothing to do for VFs, on platforms where pkt replication
         * is not supported
         */
        if ((pcifunc & RVU_PFVF_FUNC_MASK) && !rvu->hw->cap.nix_rx_multicast)
                return;

        /* add/delete pf_func to broadcast MCE list */
        npc_enadis_default_mce_entry(rvu, pcifunc, nixlf,
                                     NIXLF_BCAST_ENTRY, enable);
}

void rvu_npc_disable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
{
        npc_enadis_default_entries(rvu, pcifunc, nixlf, false);

        /* Delete multicast and promisc MCAM entries */
        npc_enadis_default_mce_entry(rvu, pcifunc, nixlf,
                                     NIXLF_ALLMULTI_ENTRY, false);
        npc_enadis_default_mce_entry(rvu, pcifunc, nixlf,
                                     NIXLF_PROMISC_ENTRY, false);
}

void rvu_npc_enable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
{
        /* Enables only broadcast match entry. Promisc/Allmulti are enabled
         * in set_rx_mode mbox handler.
         */
        npc_enadis_default_entries(rvu, pcifunc, nixlf, true);
}

void rvu_npc_disable_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
{
        struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_npc_mcam_rule *rule, *tmp;
        int blkaddr;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        mutex_lock(&mcam->lock);

        /* Disable MCAM entries directing traffic to this 'pcifunc' */
        list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) {
                if (is_npc_intf_rx(rule->intf) &&
                    rule->rx_action.pf_func == pcifunc &&
                    rule->rx_action.op != NIX_RX_ACTIONOP_MCAST) {
                        npc_enable_mcam_entry(rvu, mcam, blkaddr,
                                              rule->entry, false);
                        rule->enable = false;
                        /* Indicate that default rule is disabled */
                        if (rule->default_rule) {
                                pfvf->def_ucast_rule = NULL;
                                list_del(&rule->list);
                                kfree(rule);
                        }
                }
        }

        mutex_unlock(&mcam->lock);

        npc_mcam_disable_flows(rvu, pcifunc);

        rvu_npc_disable_default_entries(rvu, pcifunc, nixlf);
}

void rvu_npc_free_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_npc_mcam_rule *rule, *tmp;
        int blkaddr;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return;

        mutex_lock(&mcam->lock);

        /* Free all MCAM entries owned by this 'pcifunc' */
        npc_mcam_free_all_entries(rvu, mcam, blkaddr, pcifunc);

        /* Free all MCAM counters owned by this 'pcifunc' */
        npc_mcam_free_all_counters(rvu, mcam, pcifunc);

        /* Delete MCAM entries owned by this 'pcifunc' */
        list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) {
                if (rule->owner == pcifunc && !rule->default_rule) {
                        list_del(&rule->list);
                        kfree(rule);
                }
        }

        mutex_unlock(&mcam->lock);

        rvu_npc_disable_default_entries(rvu, pcifunc, nixlf);
}

#define SET_KEX_LD(intf, lid, ltype, ld, cfg)   \
        rvu_write64(rvu, blkaddr,                       \
                NPC_AF_INTFX_LIDX_LTX_LDX_CFG(intf, lid, ltype, ld), cfg)

#define SET_KEX_LDFLAGS(intf, ld, flags, cfg)   \
        rvu_write64(rvu, blkaddr,                       \
                NPC_AF_INTFX_LDATAX_FLAGSX_CFG(intf, ld, flags), cfg)

static void npc_program_mkex_rx(struct rvu *rvu, int blkaddr,
                                struct npc_mcam_kex *mkex, u8 intf)
{
        int lid, lt, ld, fl;

        if (is_npc_intf_tx(intf))
                return;

        rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf),
                    mkex->keyx_cfg[NIX_INTF_RX]);

        /* Program LDATA */
        for (lid = 0; lid < NPC_MAX_LID; lid++) {
                for (lt = 0; lt < NPC_MAX_LT; lt++) {
                        for (ld = 0; ld < NPC_MAX_LD; ld++)
                                SET_KEX_LD(intf, lid, lt, ld,
                                           mkex->intf_lid_lt_ld[NIX_INTF_RX]
                                           [lid][lt][ld]);
                }
        }
        /* Program LFLAGS */
        for (ld = 0; ld < NPC_MAX_LD; ld++) {
                for (fl = 0; fl < NPC_MAX_LFL; fl++)
                        SET_KEX_LDFLAGS(intf, ld, fl,
                                        mkex->intf_ld_flags[NIX_INTF_RX]
                                        [ld][fl]);
        }
}

static void npc_program_mkex_tx(struct rvu *rvu, int blkaddr,
                                struct npc_mcam_kex *mkex, u8 intf)
{
        int lid, lt, ld, fl;

        if (is_npc_intf_rx(intf))
                return;

        rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf),
                    mkex->keyx_cfg[NIX_INTF_TX]);

        /* Program LDATA */
        for (lid = 0; lid < NPC_MAX_LID; lid++) {
                for (lt = 0; lt < NPC_MAX_LT; lt++) {
                        for (ld = 0; ld < NPC_MAX_LD; ld++)
                                SET_KEX_LD(intf, lid, lt, ld,
                                           mkex->intf_lid_lt_ld[NIX_INTF_TX]
                                           [lid][lt][ld]);
                }
        }
        /* Program LFLAGS */
        for (ld = 0; ld < NPC_MAX_LD; ld++) {
                for (fl = 0; fl < NPC_MAX_LFL; fl++)
                        SET_KEX_LDFLAGS(intf, ld, fl,
                                        mkex->intf_ld_flags[NIX_INTF_TX]
                                        [ld][fl]);
        }
}

static void npc_program_mkex_profile(struct rvu *rvu, int blkaddr,
                                     struct npc_mcam_kex *mkex)
{
        struct rvu_hwinfo *hw = rvu->hw;
        u8 intf;
        int ld;

        for (ld = 0; ld < NPC_MAX_LD; ld++)
                rvu_write64(rvu, blkaddr, NPC_AF_KEX_LDATAX_FLAGS_CFG(ld),
                            mkex->kex_ld_flags[ld]);

        for (intf = 0; intf < hw->npc_intfs; intf++) {
                npc_program_mkex_rx(rvu, blkaddr, mkex, intf);
                npc_program_mkex_tx(rvu, blkaddr, mkex, intf);
        }
}

static int npc_fwdb_prfl_img_map(struct rvu *rvu, void __iomem **prfl_img_addr,
                                 u64 *size)
{
        u64 prfl_addr, prfl_sz;

        if (!rvu->fwdata)
                return -EINVAL;

        prfl_addr = rvu->fwdata->mcam_addr;
        prfl_sz = rvu->fwdata->mcam_sz;

        if (!prfl_addr || !prfl_sz)
                return -EINVAL;

        *prfl_img_addr = ioremap_wc(prfl_addr, prfl_sz);
        if (!(*prfl_img_addr))
                return -ENOMEM;

        *size = prfl_sz;

        return 0;
}

/* strtoull of "mkexprof" with base:36 */
#define MKEX_END_SIGN  0xdeadbeef

static void npc_load_mkex_profile(struct rvu *rvu, int blkaddr,
                                  const char *mkex_profile)
{
        struct device *dev = &rvu->pdev->dev;
        struct npc_mcam_kex *mcam_kex;
        void __iomem *mkex_prfl_addr = NULL;
        u64 prfl_sz;
        int ret;

        /* If user not selected mkex profile */
        if (rvu->kpu_fwdata_sz ||
            !strncmp(mkex_profile, def_pfl_name, MKEX_NAME_LEN))
                goto program_mkex;

        /* Setting up the mapping for mkex profile image */
        ret = npc_fwdb_prfl_img_map(rvu, &mkex_prfl_addr, &prfl_sz);
        if (ret < 0)
                goto program_mkex;

        mcam_kex = (struct npc_mcam_kex __force *)mkex_prfl_addr;

        while (((s64)prfl_sz > 0) && (mcam_kex->mkex_sign != MKEX_END_SIGN)) {
                /* Compare with mkex mod_param name string */
                if (mcam_kex->mkex_sign == MKEX_SIGN &&
                    !strncmp(mcam_kex->name, mkex_profile, MKEX_NAME_LEN)) {
                        /* Due to an errata (35786) in A0/B0 pass silicon,
                         * parse nibble enable configuration has to be
                         * identical for both Rx and Tx interfaces.
                         */
                        if (!is_rvu_96xx_B0(rvu) ||
                            mcam_kex->keyx_cfg[NIX_INTF_RX] == mcam_kex->keyx_cfg[NIX_INTF_TX])
                                rvu->kpu.mkex = mcam_kex;
                        goto program_mkex;
                }

                mcam_kex++;
                prfl_sz -= sizeof(struct npc_mcam_kex);
        }
        dev_warn(dev, "Failed to load requested profile: %s\n", mkex_profile);

program_mkex:
        dev_info(rvu->dev, "Using %s mkex profile\n", rvu->kpu.mkex->name);
        /* Program selected mkex profile */
        npc_program_mkex_profile(rvu, blkaddr, rvu->kpu.mkex);
        if (mkex_prfl_addr)
                iounmap(mkex_prfl_addr);
}

static void npc_config_kpuaction(struct rvu *rvu, int blkaddr,
                                 const struct npc_kpu_profile_action *kpuaction,
                                 int kpu, int entry, bool pkind)
{
        struct npc_kpu_action0 action0 = {0};
        struct npc_kpu_action1 action1 = {0};
        u64 reg;

        action1.errlev = kpuaction->errlev;
        action1.errcode = kpuaction->errcode;
        action1.dp0_offset = kpuaction->dp0_offset;
        action1.dp1_offset = kpuaction->dp1_offset;
        action1.dp2_offset = kpuaction->dp2_offset;

        if (pkind)
                reg = NPC_AF_PKINDX_ACTION1(entry);
        else
                reg = NPC_AF_KPUX_ENTRYX_ACTION1(kpu, entry);

        rvu_write64(rvu, blkaddr, reg, *(u64 *)&action1);

        action0.byp_count = kpuaction->bypass_count;
        action0.capture_ena = kpuaction->cap_ena;
        action0.parse_done = kpuaction->parse_done;
        action0.next_state = kpuaction->next_state;
        action0.capture_lid = kpuaction->lid;
        action0.capture_ltype = kpuaction->ltype;
        action0.capture_flags = kpuaction->flags;
        action0.ptr_advance = kpuaction->ptr_advance;
        action0.var_len_offset = kpuaction->offset;
        action0.var_len_mask = kpuaction->mask;
        action0.var_len_right = kpuaction->right;
        action0.var_len_shift = kpuaction->shift;

        if (pkind)
                reg = NPC_AF_PKINDX_ACTION0(entry);
        else
                reg = NPC_AF_KPUX_ENTRYX_ACTION0(kpu, entry);

        rvu_write64(rvu, blkaddr, reg, *(u64 *)&action0);
}

static void npc_config_kpucam(struct rvu *rvu, int blkaddr,
                              const struct npc_kpu_profile_cam *kpucam,
                              int kpu, int entry)
{
        struct npc_kpu_cam cam0 = {0};
        struct npc_kpu_cam cam1 = {0};

        cam1.state = kpucam->state & kpucam->state_mask;
        cam1.dp0_data = kpucam->dp0 & kpucam->dp0_mask;
        cam1.dp1_data = kpucam->dp1 & kpucam->dp1_mask;
        cam1.dp2_data = kpucam->dp2 & kpucam->dp2_mask;

        cam0.state = ~kpucam->state & kpucam->state_mask;
        cam0.dp0_data = ~kpucam->dp0 & kpucam->dp0_mask;
        cam0.dp1_data = ~kpucam->dp1 & kpucam->dp1_mask;
        cam0.dp2_data = ~kpucam->dp2 & kpucam->dp2_mask;

        rvu_write64(rvu, blkaddr,
                    NPC_AF_KPUX_ENTRYX_CAMX(kpu, entry, 0), *(u64 *)&cam0);
        rvu_write64(rvu, blkaddr,
                    NPC_AF_KPUX_ENTRYX_CAMX(kpu, entry, 1), *(u64 *)&cam1);
}

static inline u64 enable_mask(int count)
{
        return (((count) < 64) ? ~(BIT_ULL(count) - 1) : (0x00ULL));
}

static void npc_program_kpu_profile(struct rvu *rvu, int blkaddr, int kpu,
                                    const struct npc_kpu_profile *profile)
{
        int entry, num_entries, max_entries;
        u64 entry_mask;

        if (profile->cam_entries != profile->action_entries) {
                dev_err(rvu->dev,
                        "KPU%d: CAM and action entries [%d != %d] not equal\n",
                        kpu, profile->cam_entries, profile->action_entries);
        }

        max_entries = rvu->hw->npc_kpu_entries;

        /* Program CAM match entries for previous KPU extracted data */
        num_entries = min_t(int, profile->cam_entries, max_entries);
        for (entry = 0; entry < num_entries; entry++)
                npc_config_kpucam(rvu, blkaddr,
                                  &profile->cam[entry], kpu, entry);

        /* Program this KPU's actions */
        num_entries = min_t(int, profile->action_entries, max_entries);
        for (entry = 0; entry < num_entries; entry++)
                npc_config_kpuaction(rvu, blkaddr, &profile->action[entry],
                                     kpu, entry, false);

        /* Enable all programmed entries */
        num_entries = min_t(int, profile->action_entries, profile->cam_entries);
        entry_mask = enable_mask(num_entries);
        /* Disable first KPU_MAX_CST_ENT entries for built-in profile */
        if (!rvu->kpu.custom)
                entry_mask |= GENMASK_ULL(KPU_MAX_CST_ENT - 1, 0);
        rvu_write64(rvu, blkaddr,
                    NPC_AF_KPUX_ENTRY_DISX(kpu, 0), entry_mask);
        if (num_entries > 64) {
                rvu_write64(rvu, blkaddr,
                            NPC_AF_KPUX_ENTRY_DISX(kpu, 1),
                            enable_mask(num_entries - 64));
        }

        /* Enable this KPU */
        rvu_write64(rvu, blkaddr, NPC_AF_KPUX_CFG(kpu), 0x01);
}

static int npc_prepare_default_kpu(struct npc_kpu_profile_adapter *profile)
{
        profile->custom = 0;
        profile->name = def_pfl_name;
        profile->version = NPC_KPU_PROFILE_VER;
        profile->ikpu = ikpu_action_entries;
        profile->pkinds = ARRAY_SIZE(ikpu_action_entries);
        profile->kpu = npc_kpu_profiles;
        profile->kpus = ARRAY_SIZE(npc_kpu_profiles);
        profile->lt_def = &npc_lt_defaults;
        profile->mkex = &npc_mkex_default;

        return 0;
}

static int npc_apply_custom_kpu(struct rvu *rvu,
                                struct npc_kpu_profile_adapter *profile)
{
        size_t hdr_sz = sizeof(struct npc_kpu_profile_fwdata), offset = 0;
        struct npc_kpu_profile_fwdata *fw = rvu->kpu_fwdata;
        struct npc_kpu_profile_action *action;
        struct npc_kpu_profile_cam *cam;
        struct npc_kpu_fwdata *fw_kpu;
        int entries;
        u16 kpu, entry;

        if (rvu->kpu_fwdata_sz < hdr_sz) {
                dev_warn(rvu->dev, "Invalid KPU profile size\n");
                return -EINVAL;
        }
        if (le64_to_cpu(fw->signature) != KPU_SIGN) {
                dev_warn(rvu->dev, "Invalid KPU profile signature %llx\n",
                         fw->signature);
                return -EINVAL;
        }
        /* Verify if the using known profile structure */
        if (NPC_KPU_VER_MAJ(profile->version) >
            NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER)) {
                dev_warn(rvu->dev, "Not supported Major version: %d > %d\n",
                         NPC_KPU_VER_MAJ(profile->version),
                         NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER));
                return -EINVAL;
        }
        /* Verify if profile is aligned with the required kernel changes */
        if (NPC_KPU_VER_MIN(profile->version) <
            NPC_KPU_VER_MIN(NPC_KPU_PROFILE_VER)) {
                dev_warn(rvu->dev,
                         "Invalid KPU profile version: %d.%d.%d expected version <= %d.%d.%d\n",
                         NPC_KPU_VER_MAJ(profile->version),
                         NPC_KPU_VER_MIN(profile->version),
                         NPC_KPU_VER_PATCH(profile->version),
                         NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER),
                         NPC_KPU_VER_MIN(NPC_KPU_PROFILE_VER),
                         NPC_KPU_VER_PATCH(NPC_KPU_PROFILE_VER));
                return -EINVAL;
        }
        /* Verify if profile fits the HW */
        if (fw->kpus > profile->kpus) {
                dev_warn(rvu->dev, "Not enough KPUs: %d > %ld\n", fw->kpus,
                         profile->kpus);
                return -EINVAL;
        }

        profile->custom = 1;
        profile->name = fw->name;
        profile->version = le64_to_cpu(fw->version);
        profile->mkex = &fw->mkex;
        profile->lt_def = &fw->lt_def;

        for (kpu = 0; kpu < fw->kpus; kpu++) {
                fw_kpu = (struct npc_kpu_fwdata *)(fw->data + offset);
                if (fw_kpu->entries > KPU_MAX_CST_ENT)
                        dev_warn(rvu->dev,
                                 "Too many custom entries on KPU%d: %d > %d\n",
                                 kpu, fw_kpu->entries, KPU_MAX_CST_ENT);
                entries = min(fw_kpu->entries, KPU_MAX_CST_ENT);
                cam = (struct npc_kpu_profile_cam *)fw_kpu->data;
                offset += sizeof(*fw_kpu) + fw_kpu->entries * sizeof(*cam);
                action = (struct npc_kpu_profile_action *)(fw->data + offset);
                offset += fw_kpu->entries * sizeof(*action);
                if (rvu->kpu_fwdata_sz < hdr_sz + offset) {
                        dev_warn(rvu->dev,
                                 "Profile size mismatch on KPU%i parsing.\n",
                                 kpu + 1);
                        return -EINVAL;
                }
                for (entry = 0; entry < entries; entry++) {
                        profile->kpu[kpu].cam[entry] = cam[entry];
                        profile->kpu[kpu].action[entry] = action[entry];
                }
        }

        return 0;
}

static int npc_load_kpu_prfl_img(struct rvu *rvu, void __iomem *prfl_addr,
                                 u64 prfl_sz, const char *kpu_profile)
{
        struct npc_kpu_profile_fwdata *kpu_data = NULL;
        int rc = -EINVAL;

        kpu_data = (struct npc_kpu_profile_fwdata __force *)prfl_addr;
        if (le64_to_cpu(kpu_data->signature) == KPU_SIGN &&
            !strncmp(kpu_data->name, kpu_profile, KPU_NAME_LEN)) {
                dev_info(rvu->dev, "Loading KPU profile from firmware db: %s\n",
                         kpu_profile);
                rvu->kpu_fwdata = kpu_data;
                rvu->kpu_fwdata_sz = prfl_sz;
                rvu->kpu_prfl_addr = prfl_addr;
                rc = 0;
        }

        return rc;
}

static int npc_fwdb_detect_load_prfl_img(struct rvu *rvu, uint64_t prfl_sz,
                                         const char *kpu_profile)
{
        struct npc_coalesced_kpu_prfl *img_data = NULL;
        int i = 0, rc = -EINVAL;
        void __iomem *kpu_prfl_addr;
        u16 offset;

        img_data = (struct npc_coalesced_kpu_prfl __force *)rvu->kpu_prfl_addr;
        if (le64_to_cpu(img_data->signature) == KPU_SIGN &&
            !strncmp(img_data->name, kpu_profile, KPU_NAME_LEN)) {
                /* Loaded profile is a single KPU profile. */
                rc = npc_load_kpu_prfl_img(rvu, rvu->kpu_prfl_addr,
                                           prfl_sz, kpu_profile);
                goto done;
        }

        /* Loaded profile is coalesced image, offset of first KPU profile.*/
        offset = offsetof(struct npc_coalesced_kpu_prfl, prfl_sz) +
                (img_data->num_prfl * sizeof(uint16_t));
        /* Check if mapped image is coalesced image. */
        while (i < img_data->num_prfl) {
                /* Profile image offsets are rounded up to next 8 multiple.*/
                offset = ALIGN_8B_CEIL(offset);
                kpu_prfl_addr = (void __iomem *)((uintptr_t)rvu->kpu_prfl_addr +
                                         offset);
                rc = npc_load_kpu_prfl_img(rvu, kpu_prfl_addr,
                                           img_data->prfl_sz[i], kpu_profile);
                if (!rc)
                        break;
                /* Calculating offset of profile image based on profile size.*/
                offset += img_data->prfl_sz[i];
                i++;
        }
done:
        return rc;
}

static int npc_load_kpu_profile_fwdb(struct rvu *rvu, const char *kpu_profile)
{
        int ret = -EINVAL;
        u64 prfl_sz;

        /* Setting up the mapping for NPC profile image */
        ret = npc_fwdb_prfl_img_map(rvu, &rvu->kpu_prfl_addr, &prfl_sz);
        if (ret < 0)
                goto done;

        /* Detect if profile is coalesced or single KPU profile and load */
        ret = npc_fwdb_detect_load_prfl_img(rvu, prfl_sz, kpu_profile);
        if (ret == 0)
                goto done;

        /* Cleaning up if KPU profile image from fwdata is not valid. */
        if (rvu->kpu_prfl_addr) {
                iounmap(rvu->kpu_prfl_addr);
                rvu->kpu_prfl_addr = NULL;
                rvu->kpu_fwdata_sz = 0;
                rvu->kpu_fwdata = NULL;
        }

done:
        return ret;
}

static void npc_load_kpu_profile(struct rvu *rvu)
{
        struct npc_kpu_profile_adapter *profile = &rvu->kpu;
        const char *kpu_profile = rvu->kpu_pfl_name;
        const struct firmware *fw = NULL;
        bool retry_fwdb = false;

        /* If user not specified profile customization */
        if (!strncmp(kpu_profile, def_pfl_name, KPU_NAME_LEN))
                goto revert_to_default;
        /* First prepare default KPU, then we'll customize top entries. */
        npc_prepare_default_kpu(profile);

        /* Order of preceedence for load loading NPC profile (high to low)
         * Firmware binary in filesystem.
         * Firmware database method.
         * Default KPU profile.
         */
        if (!request_firmware(&fw, kpu_profile, rvu->dev)) {
                dev_info(rvu->dev, "Loading KPU profile from firmware: %s\n",
                         kpu_profile);
                rvu->kpu_fwdata = kzalloc(fw->size, GFP_KERNEL);
                if (rvu->kpu_fwdata) {
                        memcpy(rvu->kpu_fwdata, fw->data, fw->size);
                        rvu->kpu_fwdata_sz = fw->size;
                }
                release_firmware(fw);
                retry_fwdb = true;
                goto program_kpu;
        }

load_image_fwdb:
        /* Loading the KPU profile using firmware database */
        if (npc_load_kpu_profile_fwdb(rvu, kpu_profile))
                goto revert_to_default;

program_kpu:
        /* Apply profile customization if firmware was loaded. */
        if (!rvu->kpu_fwdata_sz || npc_apply_custom_kpu(rvu, profile)) {
                /* If image from firmware filesystem fails to load or invalid
                 * retry with firmware database method.
                 */
                if (rvu->kpu_fwdata || rvu->kpu_fwdata_sz) {
                        /* Loading image from firmware database failed. */
                        if (rvu->kpu_prfl_addr) {
                                iounmap(rvu->kpu_prfl_addr);
                                rvu->kpu_prfl_addr = NULL;
                        } else {
                                kfree(rvu->kpu_fwdata);
                        }
                        rvu->kpu_fwdata = NULL;
                        rvu->kpu_fwdata_sz = 0;
                        if (retry_fwdb) {
                                retry_fwdb = false;
                                goto load_image_fwdb;
                        }
                }

                dev_warn(rvu->dev,
                         "Can't load KPU profile %s. Using default.\n",
                         kpu_profile);
                kfree(rvu->kpu_fwdata);
                rvu->kpu_fwdata = NULL;
                goto revert_to_default;
        }

        dev_info(rvu->dev, "Using custom profile '%s', version %d.%d.%d\n",
                 profile->name, NPC_KPU_VER_MAJ(profile->version),
                 NPC_KPU_VER_MIN(profile->version),
                 NPC_KPU_VER_PATCH(profile->version));

        return;

revert_to_default:
        npc_prepare_default_kpu(profile);
}

static void npc_parser_profile_init(struct rvu *rvu, int blkaddr)
{
        struct rvu_hwinfo *hw = rvu->hw;
        int num_pkinds, num_kpus, idx;

        /* Disable all KPUs and their entries */
        for (idx = 0; idx < hw->npc_kpus; idx++) {
                rvu_write64(rvu, blkaddr,
                            NPC_AF_KPUX_ENTRY_DISX(idx, 0), ~0ULL);
                rvu_write64(rvu, blkaddr,
                            NPC_AF_KPUX_ENTRY_DISX(idx, 1), ~0ULL);
                rvu_write64(rvu, blkaddr, NPC_AF_KPUX_CFG(idx), 0x00);
        }

        /* Load and customize KPU profile. */
        npc_load_kpu_profile(rvu);

        /* First program IKPU profile i.e PKIND configs.
         * Check HW max count to avoid configuring junk or
         * writing to unsupported CSR addresses.
         */
        num_pkinds = rvu->kpu.pkinds;
        num_pkinds = min_t(int, hw->npc_pkinds, num_pkinds);

        for (idx = 0; idx < num_pkinds; idx++)
                npc_config_kpuaction(rvu, blkaddr, &rvu->kpu.ikpu[idx], 0, idx, true);

        /* Program KPU CAM and Action profiles */
        num_kpus = rvu->kpu.kpus;
        num_kpus = min_t(int, hw->npc_kpus, num_kpus);

        for (idx = 0; idx < num_kpus; idx++)
                npc_program_kpu_profile(rvu, blkaddr, idx, &rvu->kpu.kpu[idx]);
}

static int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
{
        int nixlf_count = rvu_get_nixlf_count(rvu);
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int rsvd, err;
        u16 index;
        int cntr;
        u64 cfg;

        /* Actual number of MCAM entries vary by entry size */
        cfg = (rvu_read64(rvu, blkaddr,
                          NPC_AF_INTFX_KEX_CFG(0)) >> 32) & 0x07;
        mcam->total_entries = (mcam->banks / BIT_ULL(cfg)) * mcam->banksize;
        mcam->keysize = cfg;

        /* Number of banks combined per MCAM entry */
        if (cfg == NPC_MCAM_KEY_X4)
                mcam->banks_per_entry = 4;
        else if (cfg == NPC_MCAM_KEY_X2)
                mcam->banks_per_entry = 2;
        else
                mcam->banks_per_entry = 1;

        /* Reserve one MCAM entry for each of the NIX LF to
         * guarantee space to install default matching DMAC rule.
         * Also reserve 2 MCAM entries for each PF for default
         * channel based matching or 'bcast & promisc' matching to
         * support BCAST and PROMISC modes of operation for PFs.
         * PF0 is excluded.
         */
        rsvd = (nixlf_count * RSVD_MCAM_ENTRIES_PER_NIXLF) +
                ((rvu->hw->total_pfs - 1) * RSVD_MCAM_ENTRIES_PER_PF);
        if (mcam->total_entries <= rsvd) {
                dev_warn(rvu->dev,
                         "Insufficient NPC MCAM size %d for pkt I/O, exiting\n",
                         mcam->total_entries);
                return -ENOMEM;
        }

        mcam->bmap_entries = mcam->total_entries - rsvd;
        mcam->nixlf_offset = mcam->bmap_entries;
        mcam->pf_offset = mcam->nixlf_offset + nixlf_count;

        /* Allocate bitmaps for managing MCAM entries */
        mcam->bmap = devm_kcalloc(rvu->dev, BITS_TO_LONGS(mcam->bmap_entries),
                                  sizeof(long), GFP_KERNEL);
        if (!mcam->bmap)
                return -ENOMEM;

        mcam->bmap_reverse = devm_kcalloc(rvu->dev,
                                          BITS_TO_LONGS(mcam->bmap_entries),
                                          sizeof(long), GFP_KERNEL);
        if (!mcam->bmap_reverse)
                return -ENOMEM;

        mcam->bmap_fcnt = mcam->bmap_entries;

        /* Alloc memory for saving entry to RVU PFFUNC allocation mapping */
        mcam->entry2pfvf_map = devm_kcalloc(rvu->dev, mcam->bmap_entries,
                                            sizeof(u16), GFP_KERNEL);
        if (!mcam->entry2pfvf_map)
                return -ENOMEM;

        /* Reserve 1/8th of MCAM entries at the bottom for low priority
         * allocations and another 1/8th at the top for high priority
         * allocations.
         */
        mcam->lprio_count = mcam->bmap_entries / 8;
        if (mcam->lprio_count > BITS_PER_LONG)
                mcam->lprio_count = round_down(mcam->lprio_count,
                                               BITS_PER_LONG);
        mcam->lprio_start = mcam->bmap_entries - mcam->lprio_count;
        mcam->hprio_count = mcam->lprio_count;
        mcam->hprio_end = mcam->hprio_count;


        /* Allocate bitmap for managing MCAM counters and memory
         * for saving counter to RVU PFFUNC allocation mapping.
         */
        err = rvu_alloc_bitmap(&mcam->counters);
        if (err)
                return err;

        mcam->cntr2pfvf_map = devm_kcalloc(rvu->dev, mcam->counters.max,
                                           sizeof(u16), GFP_KERNEL);
        if (!mcam->cntr2pfvf_map)
                goto free_mem;

        /* Alloc memory for MCAM entry to counter mapping and for tracking
         * counter's reference count.
         */
        mcam->entry2cntr_map = devm_kcalloc(rvu->dev, mcam->bmap_entries,
                                            sizeof(u16), GFP_KERNEL);
        if (!mcam->entry2cntr_map)
                goto free_mem;

        mcam->cntr_refcnt = devm_kcalloc(rvu->dev, mcam->counters.max,
                                         sizeof(u16), GFP_KERNEL);
        if (!mcam->cntr_refcnt)
                goto free_mem;

        /* Alloc memory for saving target device of mcam rule */
        mcam->entry2target_pffunc = devm_kcalloc(rvu->dev, mcam->total_entries,
                                                 sizeof(u16), GFP_KERNEL);
        if (!mcam->entry2target_pffunc)
                goto free_mem;

        for (index = 0; index < mcam->bmap_entries; index++) {
                mcam->entry2pfvf_map[index] = NPC_MCAM_INVALID_MAP;
                mcam->entry2cntr_map[index] = NPC_MCAM_INVALID_MAP;
        }

        for (cntr = 0; cntr < mcam->counters.max; cntr++)
                mcam->cntr2pfvf_map[cntr] = NPC_MCAM_INVALID_MAP;

        mutex_init(&mcam->lock);

        return 0;

free_mem:
        kfree(mcam->counters.bmap);
        return -ENOMEM;
}

static void rvu_npc_hw_init(struct rvu *rvu, int blkaddr)
{
        struct npc_pkind *pkind = &rvu->hw->pkind;
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_hwinfo *hw = rvu->hw;
        u64 npc_const, npc_const1;
        u64 npc_const2 = 0;

        npc_const = rvu_read64(rvu, blkaddr, NPC_AF_CONST);
        npc_const1 = rvu_read64(rvu, blkaddr, NPC_AF_CONST1);
        if (npc_const1 & BIT_ULL(63))
                npc_const2 = rvu_read64(rvu, blkaddr, NPC_AF_CONST2);

        pkind->rsrc.max = NPC_UNRESERVED_PKIND_COUNT;
        hw->npc_pkinds = (npc_const1 >> 12) & 0xFFULL;
        hw->npc_kpu_entries = npc_const1 & 0xFFFULL;
        hw->npc_kpus = (npc_const >> 8) & 0x1FULL;
        hw->npc_intfs = npc_const & 0xFULL;
        hw->npc_counters = (npc_const >> 48) & 0xFFFFULL;

        mcam->banks = (npc_const >> 44) & 0xFULL;
        mcam->banksize = (npc_const >> 28) & 0xFFFFULL;
        hw->npc_stat_ena = BIT_ULL(9);
        /* Extended set */
        if (npc_const2) {
                hw->npc_ext_set = true;
                /* 96xx supports only match_stats and npc_counters
                 * reflected in NPC_AF_CONST reg.
                 * STAT_SEL and ENA are at [0:8] and 9 bit positions.
                 * 98xx has both match_stat and ext and npc_counter
                 * reflected in NPC_AF_CONST2
                 * STAT_SEL_EXT added at [12:14] bit position.
                 * cn10k supports only ext and hence npc_counters in
                 * NPC_AF_CONST is 0 and npc_counters reflected in NPC_AF_CONST2.
                 * STAT_SEL bitpos incremented from [0:8] to [0:11] and ENA bit moved to 63
                 */
                if (!hw->npc_counters)
                        hw->npc_stat_ena = BIT_ULL(63);
                hw->npc_counters = (npc_const2 >> 16) & 0xFFFFULL;
                mcam->banksize = npc_const2 & 0xFFFFULL;
        }

        mcam->counters.max = hw->npc_counters;
}

static void rvu_npc_setup_interfaces(struct rvu *rvu, int blkaddr)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        struct rvu_hwinfo *hw = rvu->hw;
        u64 nibble_ena, rx_kex, tx_kex;
        u8 intf;

        /* Reserve last counter for MCAM RX miss action which is set to
         * drop packet. This way we will know how many pkts didn't match
         * any MCAM entry.
         */
        mcam->counters.max--;
        mcam->rx_miss_act_cntr = mcam->counters.max;

        rx_kex = npc_mkex_default.keyx_cfg[NIX_INTF_RX];
        tx_kex = npc_mkex_default.keyx_cfg[NIX_INTF_TX];
        nibble_ena = FIELD_GET(NPC_PARSE_NIBBLE, rx_kex);

        nibble_ena = rvu_npc_get_tx_nibble_cfg(rvu, nibble_ena);
        if (nibble_ena) {
                tx_kex &= ~NPC_PARSE_NIBBLE;
                tx_kex |= FIELD_PREP(NPC_PARSE_NIBBLE, nibble_ena);
                npc_mkex_default.keyx_cfg[NIX_INTF_TX] = tx_kex;
        }

        /* Configure RX interfaces */
        for (intf = 0; intf < hw->npc_intfs; intf++) {
                if (is_npc_intf_tx(intf))
                        continue;

                /* Set RX MCAM search key size. LA..LE (ltype only) + Channel */
                rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf),
                            rx_kex);

                /* If MCAM lookup doesn't result in a match, drop the received
                 * packet. And map this action to a counter to count dropped
                 * packets.
                 */
                rvu_write64(rvu, blkaddr,
                            NPC_AF_INTFX_MISS_ACT(intf), NIX_RX_ACTIONOP_DROP);

                /* NPC_AF_INTFX_MISS_STAT_ACT[14:12] - counter[11:9]
                 * NPC_AF_INTFX_MISS_STAT_ACT[8:0] - counter[8:0]
                 */
                rvu_write64(rvu, blkaddr,
                            NPC_AF_INTFX_MISS_STAT_ACT(intf),
                            ((mcam->rx_miss_act_cntr >> 9) << 12) |
                            hw->npc_stat_ena | mcam->rx_miss_act_cntr);
        }

        /* Configure TX interfaces */
        for (intf = 0; intf < hw->npc_intfs; intf++) {
                if (is_npc_intf_rx(intf))
                        continue;

                /* Extract Ltypes LID_LA to LID_LE */
                rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf),
                            tx_kex);

                /* Set TX miss action to UCAST_DEFAULT i.e
                 * transmit the packet on NIX LF SQ's default channel.
                 */
                rvu_write64(rvu, blkaddr,
                            NPC_AF_INTFX_MISS_ACT(intf),
                            NIX_TX_ACTIONOP_UCAST_DEFAULT);
        }
}

int rvu_npc_init(struct rvu *rvu)
{
        struct npc_kpu_profile_adapter *kpu = &rvu->kpu;
        struct npc_pkind *pkind = &rvu->hw->pkind;
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int blkaddr, entry, bank, err;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0) {
                dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
                return -ENODEV;
        }

        rvu_npc_hw_init(rvu, blkaddr);

        /* First disable all MCAM entries, to stop traffic towards NIXLFs */
        for (bank = 0; bank < mcam->banks; bank++) {
                for (entry = 0; entry < mcam->banksize; entry++)
                        rvu_write64(rvu, blkaddr,
                                    NPC_AF_MCAMEX_BANKX_CFG(entry, bank), 0);
        }

        err = rvu_alloc_bitmap(&pkind->rsrc);
        if (err)
                return err;
        /* Reserve PKIND#0 for LBKs. Power reset value of LBK_CH_PKIND is '0',
         * no need to configure PKIND for all LBKs separately.
         */
        rvu_alloc_rsrc(&pkind->rsrc);

        /* Allocate mem for pkind to PF and channel mapping info */
        pkind->pfchan_map = devm_kcalloc(rvu->dev, pkind->rsrc.max,

                                         sizeof(u32), GFP_KERNEL);
        if (!pkind->pfchan_map)
                return -ENOMEM;

        /* Configure KPU profile */
        npc_parser_profile_init(rvu, blkaddr);

        /* Config Outer L2, IPv4's NPC layer info */
        rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OL2,
                    (kpu->lt_def->pck_ol2.lid << 8) | (kpu->lt_def->pck_ol2.ltype_match << 4) |
                    kpu->lt_def->pck_ol2.ltype_mask);
        rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OIP4,
                    (kpu->lt_def->pck_oip4.lid << 8) | (kpu->lt_def->pck_oip4.ltype_match << 4) |
                    kpu->lt_def->pck_oip4.ltype_mask);

        /* Config Inner IPV4 NPC layer info */
        rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_IIP4,
                    (kpu->lt_def->pck_iip4.lid << 8) | (kpu->lt_def->pck_iip4.ltype_match << 4) |
                    kpu->lt_def->pck_iip4.ltype_mask);

        /* Enable below for Rx pkts.
         * - Outer IPv4 header checksum validation.
         * - Detect outer L2 broadcast address and set NPC_RESULT_S[L2B].
         * - Detect outer L2 multicast address and set NPC_RESULT_S[L2M].
         * - Inner IPv4 header checksum validation.
         * - Set non zero checksum error code value
         */
        rvu_write64(rvu, blkaddr, NPC_AF_PCK_CFG,
                    rvu_read64(rvu, blkaddr, NPC_AF_PCK_CFG) |
                    ((u64)NPC_EC_OIP4_CSUM << 32) | (NPC_EC_IIP4_CSUM << 24) |
                    BIT_ULL(7) | BIT_ULL(6) | BIT_ULL(2) | BIT_ULL(1));

        rvu_npc_setup_interfaces(rvu, blkaddr);

        /* Configure MKEX profile */
        npc_load_mkex_profile(rvu, blkaddr, rvu->mkex_pfl_name);

        err = npc_mcam_rsrcs_init(rvu, blkaddr);
        if (err)
                return err;

        err = npc_flow_steering_init(rvu, blkaddr);
        if (err) {
                dev_err(rvu->dev,
                        "Incorrect mkex profile loaded using default mkex\n");
                npc_load_mkex_profile(rvu, blkaddr, def_pfl_name);
        }

        return 0;
}

void rvu_npc_freemem(struct rvu *rvu)
{
        struct npc_pkind *pkind = &rvu->hw->pkind;
        struct npc_mcam *mcam = &rvu->hw->mcam;

        kfree(pkind->rsrc.bmap);
        kfree(mcam->counters.bmap);
        if (rvu->kpu_prfl_addr)
                iounmap(rvu->kpu_prfl_addr);
        else
                kfree(rvu->kpu_fwdata);
        mutex_destroy(&mcam->lock);
}

void rvu_npc_get_mcam_entry_alloc_info(struct rvu *rvu, u16 pcifunc,
                                       int blkaddr, int *alloc_cnt,
                                       int *enable_cnt)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int entry;

        *alloc_cnt = 0;
        *enable_cnt = 0;

        for (entry = 0; entry < mcam->bmap_entries; entry++) {
                if (mcam->entry2pfvf_map[entry] == pcifunc) {
                        (*alloc_cnt)++;
                        if (is_mcam_entry_enabled(rvu, mcam, blkaddr, entry))
                                (*enable_cnt)++;
                }
        }
}

void rvu_npc_get_mcam_counter_alloc_info(struct rvu *rvu, u16 pcifunc,
                                         int blkaddr, int *alloc_cnt,
                                         int *enable_cnt)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int cntr;

        *alloc_cnt = 0;
        *enable_cnt = 0;

        for (cntr = 0; cntr < mcam->counters.max; cntr++) {
                if (mcam->cntr2pfvf_map[cntr] == pcifunc) {
                        (*alloc_cnt)++;
                        if (mcam->cntr_refcnt[cntr])
                                (*enable_cnt)++;
                }
        }
}

static int npc_mcam_verify_entry(struct npc_mcam *mcam,
                                 u16 pcifunc, int entry)
{
        /* verify AF installed entries */
        if (is_pffunc_af(pcifunc))
                return 0;
        /* Verify if entry is valid and if it is indeed
         * allocated to the requesting PFFUNC.
         */
        if (entry >= mcam->bmap_entries)
                return NPC_MCAM_INVALID_REQ;

        if (pcifunc != mcam->entry2pfvf_map[entry])
                return NPC_MCAM_PERM_DENIED;

        return 0;
}

static int npc_mcam_verify_counter(struct npc_mcam *mcam,
                                   u16 pcifunc, int cntr)
{
        /* Verify if counter is valid and if it is indeed
         * allocated to the requesting PFFUNC.
         */
        if (cntr >= mcam->counters.max)
                return NPC_MCAM_INVALID_REQ;

        if (pcifunc != mcam->cntr2pfvf_map[cntr])
                return NPC_MCAM_PERM_DENIED;

        return 0;
}

static void npc_map_mcam_entry_and_cntr(struct rvu *rvu, struct npc_mcam *mcam,
                                        int blkaddr, u16 entry, u16 cntr)
{
        u16 index = entry & (mcam->banksize - 1);
        u32 bank = npc_get_bank(mcam, entry);
        struct rvu_hwinfo *hw = rvu->hw;

        /* Set mapping and increment counter's refcnt */
        mcam->entry2cntr_map[entry] = cntr;
        mcam->cntr_refcnt[cntr]++;
        /* Enable stats */
        rvu_write64(rvu, blkaddr,
                    NPC_AF_MCAMEX_BANKX_STAT_ACT(index, bank),
                    ((cntr >> 9) << 12) | hw->npc_stat_ena | cntr);
}

static void npc_unmap_mcam_entry_and_cntr(struct rvu *rvu,
                                          struct npc_mcam *mcam,
                                          int blkaddr, u16 entry, u16 cntr)
{
        u16 index = entry & (mcam->banksize - 1);
        u32 bank = npc_get_bank(mcam, entry);

        /* Remove mapping and reduce counter's refcnt */
        mcam->entry2cntr_map[entry] = NPC_MCAM_INVALID_MAP;
        mcam->cntr_refcnt[cntr]--;
        /* Disable stats */
        rvu_write64(rvu, blkaddr,
                    NPC_AF_MCAMEX_BANKX_STAT_ACT(index, bank), 0x00);
}

/* Sets MCAM entry in bitmap as used. Update
 * reverse bitmap too. Should be called with
 * 'mcam->lock' held.
 */
static void npc_mcam_set_bit(struct npc_mcam *mcam, u16 index)
{
        u16 entry, rentry;

        entry = index;
        rentry = mcam->bmap_entries - index - 1;

        __set_bit(entry, mcam->bmap);
        __set_bit(rentry, mcam->bmap_reverse);
        mcam->bmap_fcnt--;
}

/* Sets MCAM entry in bitmap as free. Update
 * reverse bitmap too. Should be called with
 * 'mcam->lock' held.
 */
static void npc_mcam_clear_bit(struct npc_mcam *mcam, u16 index)
{
        u16 entry, rentry;

        entry = index;
        rentry = mcam->bmap_entries - index - 1;

        __clear_bit(entry, mcam->bmap);
        __clear_bit(rentry, mcam->bmap_reverse);
        mcam->bmap_fcnt++;
}

static void npc_mcam_free_all_entries(struct rvu *rvu, struct npc_mcam *mcam,
                                      int blkaddr, u16 pcifunc)
{
        u16 index, cntr;

        /* Scan all MCAM entries and free the ones mapped to 'pcifunc' */
        for (index = 0; index < mcam->bmap_entries; index++) {
                if (mcam->entry2pfvf_map[index] == pcifunc) {
                        mcam->entry2pfvf_map[index] = NPC_MCAM_INVALID_MAP;
                        /* Free the entry in bitmap */
                        npc_mcam_clear_bit(mcam, index);
                        /* Disable the entry */
                        npc_enable_mcam_entry(rvu, mcam, blkaddr, index, false);

                        /* Update entry2counter mapping */
                        cntr = mcam->entry2cntr_map[index];
                        if (cntr != NPC_MCAM_INVALID_MAP)
                                npc_unmap_mcam_entry_and_cntr(rvu, mcam,
                                                              blkaddr, index,
                                                              cntr);
                        mcam->entry2target_pffunc[index] = 0x0;
                }
        }
}

static void npc_mcam_free_all_counters(struct rvu *rvu, struct npc_mcam *mcam,
                                       u16 pcifunc)
{
        u16 cntr;

        /* Scan all MCAM counters and free the ones mapped to 'pcifunc' */
        for (cntr = 0; cntr < mcam->counters.max; cntr++) {
                if (mcam->cntr2pfvf_map[cntr] == pcifunc) {
                        mcam->cntr2pfvf_map[cntr] = NPC_MCAM_INVALID_MAP;
                        mcam->cntr_refcnt[cntr] = 0;
                        rvu_free_rsrc(&mcam->counters, cntr);
                        /* This API is expected to be called after freeing
                         * MCAM entries, which inturn will remove
                         * 'entry to counter' mapping.
                         * No need to do it again.
                         */
                }
        }
}

/* Find area of contiguous free entries of size 'nr'.
 * If not found return max contiguous free entries available.
 */
static u16 npc_mcam_find_zero_area(unsigned long *map, u16 size, u16 start,
                                   u16 nr, u16 *max_area)
{
        u16 max_area_start = 0;
        u16 index, next, end;

        *max_area = 0;

again:
        index = find_next_zero_bit(map, size, start);
        if (index >= size)
                return max_area_start;

        end = ((index + nr) >= size) ? size : index + nr;
        next = find_next_bit(map, end, index);
        if (*max_area < (next - index)) {
                *max_area = next - index;
                max_area_start = index;
        }

        if (next < end) {
                start = next + 1;
                goto again;
        }

        return max_area_start;
}

/* Find number of free MCAM entries available
 * within range i.e in between 'start' and 'end'.
 */
static u16 npc_mcam_get_free_count(unsigned long *map, u16 start, u16 end)
{
        u16 index, next;
        u16 fcnt = 0;

again:
        if (start >= end)
                return fcnt;

        index = find_next_zero_bit(map, end, start);
        if (index >= end)
                return fcnt;

        next = find_next_bit(map, end, index);
        if (next <= end) {
                fcnt += next - index;
                start = next + 1;
                goto again;
        }

        fcnt += end - index;
        return fcnt;
}

static void
npc_get_mcam_search_range_priority(struct npc_mcam *mcam,
                                   struct npc_mcam_alloc_entry_req *req,
                                   u16 *start, u16 *end, bool *reverse)
{
        u16 fcnt;

        if (req->priority == NPC_MCAM_HIGHER_PRIO)
                goto hprio;

        /* For a low priority entry allocation
         * - If reference entry is not in hprio zone then
         *      search range: ref_entry to end.
         * - If reference entry is in hprio zone and if
         *   request can be accomodated in non-hprio zone then
         *      search range: 'start of middle zone' to 'end'
         * - else search in reverse, so that less number of hprio
         *   zone entries are allocated.
         */

        *reverse = false;
        *start = req->ref_entry + 1;
        *end = mcam->bmap_entries;

        if (req->ref_entry >= mcam->hprio_end)
                return;

        fcnt = npc_mcam_get_free_count(mcam->bmap,
                                       mcam->hprio_end, mcam->bmap_entries);
        if (fcnt > req->count)
                *start = mcam->hprio_end;
        else
                *reverse = true;
        return;

hprio:
        /* For a high priority entry allocation, search is always
         * in reverse to preserve hprio zone entries.
         * - If reference entry is not in lprio zone then
         *      search range: 0 to ref_entry.
         * - If reference entry is in lprio zone and if
         *   request can be accomodated in middle zone then
         *      search range: 'hprio_end' to 'lprio_start'
         */

        *reverse = true;
        *start = 0;
        *end = req->ref_entry;

        if (req->ref_entry <= mcam->lprio_start)
                return;

        fcnt = npc_mcam_get_free_count(mcam->bmap,
                                       mcam->hprio_end, mcam->lprio_start);
        if (fcnt < req->count)
                return;
        *start = mcam->hprio_end;
        *end = mcam->lprio_start;
}

static int npc_mcam_alloc_entries(struct npc_mcam *mcam, u16 pcifunc,
                                  struct npc_mcam_alloc_entry_req *req,
                                  struct npc_mcam_alloc_entry_rsp *rsp)
{
        u16 entry_list[NPC_MAX_NONCONTIG_ENTRIES];
        u16 fcnt, hp_fcnt, lp_fcnt;
        u16 start, end, index;
        int entry, next_start;
        bool reverse = false;
        unsigned long *bmap;
        u16 max_contig;

        mutex_lock(&mcam->lock);

        /* Check if there are any free entries */
        if (!mcam->bmap_fcnt) {
                mutex_unlock(&mcam->lock);
                return NPC_MCAM_ALLOC_FAILED;
        }

        /* MCAM entries are divided into high priority, middle and
         * low priority zones. Idea is to not allocate top and lower
         * most entries as much as possible, this is to increase
         * probability of honouring priority allocation requests.
         *
         * Two bitmaps are used for mcam entry management,
         * mcam->bmap for forward search i.e '0 to mcam->bmap_entries'.
         * mcam->bmap_reverse for reverse search i.e 'mcam->bmap_entries to 0'.
         *
         * Reverse bitmap is used to allocate entries
         * - when a higher priority entry is requested
         * - when available free entries are less.
         * Lower priority ones out of avaialble free entries are always
         * chosen when 'high vs low' question arises.
         */

        /* Get the search range for priority allocation request */
        if (req->priority) {
                npc_get_mcam_search_range_priority(mcam, req,
                                                   &start, &end, &reverse);
                goto alloc;
        }

        /* For a VF base MCAM match rule is set by its PF. And all the
         * further MCAM rules installed by VF on its own are
         * concatenated with the base rule set by its PF. Hence PF entries
         * should be at lower priority compared to VF entries. Otherwise
         * base rule is hit always and rules installed by VF will be of
         * no use. Hence if the request is from PF and NOT a priority
         * allocation request then allocate low priority entries.
         */
        if (!(pcifunc & RVU_PFVF_FUNC_MASK))
                goto lprio_alloc;

        /* Find out the search range for non-priority allocation request
         *
         * Get MCAM free entry count in middle zone.
         */
        lp_fcnt = npc_mcam_get_free_count(mcam->bmap,
                                          mcam->lprio_start,
                                          mcam->bmap_entries);
        hp_fcnt = npc_mcam_get_free_count(mcam->bmap, 0, mcam->hprio_end);
        fcnt = mcam->bmap_fcnt - lp_fcnt - hp_fcnt;

        /* Check if request can be accomodated in the middle zone */
        if (fcnt > req->count) {
                start = mcam->hprio_end;
                end = mcam->lprio_start;
        } else if ((fcnt + (hp_fcnt / 2) + (lp_fcnt / 2)) > req->count) {
                /* Expand search zone from half of hprio zone to
                 * half of lprio zone.
                 */
                start = mcam->hprio_end / 2;
                end = mcam->bmap_entries - (mcam->lprio_count / 2);
                reverse = true;
        } else {
                /* Not enough free entries, search all entries in reverse,
                 * so that low priority ones will get used up.
                 */
lprio_alloc:
                reverse = true;
                start = 0;
                end = mcam->bmap_entries;
        }

alloc:
        if (reverse) {
                bmap = mcam->bmap_reverse;
                start = mcam->bmap_entries - start;
                end = mcam->bmap_entries - end;
                index = start;
                start = end;
                end = index;
        } else {
                bmap = mcam->bmap;
        }

        if (req->contig) {
                /* Allocate requested number of contiguous entries, if
                 * unsuccessful find max contiguous entries available.
                 */
                index = npc_mcam_find_zero_area(bmap, end, start,
                                                req->count, &max_contig);
                rsp->count = max_contig;
                if (reverse)
                        rsp->entry = mcam->bmap_entries - index - max_contig;
                else
                        rsp->entry = index;
        } else {
                /* Allocate requested number of non-contiguous entries,
                 * if unsuccessful allocate as many as possible.
                 */
                rsp->count = 0;
                next_start = start;
                for (entry = 0; entry < req->count; entry++) {
                        index = find_next_zero_bit(bmap, end, next_start);
                        if (index >= end)
                                break;

                        next_start = start + (index - start) + 1;

                        /* Save the entry's index */
                        if (reverse)
                                index = mcam->bmap_entries - index - 1;
                        entry_list[entry] = index;
                        rsp->count++;
                }
        }

        /* If allocating requested no of entries is unsucessful,
         * expand the search range to full bitmap length and retry.
         */
        if (!req->priority && (rsp->count < req->count) &&
            ((end - start) != mcam->bmap_entries)) {
                reverse = true;
                start = 0;
                end = mcam->bmap_entries;
                goto alloc;
        }

        /* For priority entry allocation requests, if allocation is
         * failed then expand search to max possible range and retry.
         */
        if (req->priority && rsp->count < req->count) {
                if (req->priority == NPC_MCAM_LOWER_PRIO &&
                    (start != (req->ref_entry + 1))) {
                        start = req->ref_entry + 1;
                        end = mcam->bmap_entries;
                        reverse = false;
                        goto alloc;
                } else if ((req->priority == NPC_MCAM_HIGHER_PRIO) &&
                           ((end - start) != req->ref_entry)) {
                        start = 0;
                        end = req->ref_entry;
                        reverse = true;
                        goto alloc;
                }
        }

        /* Copy MCAM entry indices into mbox response entry_list.
         * Requester always expects indices in ascending order, so
         * so reverse the list if reverse bitmap is used for allocation.
         */
        if (!req->contig && rsp->count) {
                index = 0;
                for (entry = rsp->count - 1; entry >= 0; entry--) {
                        if (reverse)
                                rsp->entry_list[index++] = entry_list[entry];
                        else
                                rsp->entry_list[entry] = entry_list[entry];
                }
        }

        /* Mark the allocated entries as used and set nixlf mapping */
        for (entry = 0; entry < rsp->count; entry++) {
                index = req->contig ?
                        (rsp->entry + entry) : rsp->entry_list[entry];
                npc_mcam_set_bit(mcam, index);
                mcam->entry2pfvf_map[index] = pcifunc;
                mcam->entry2cntr_map[index] = NPC_MCAM_INVALID_MAP;
        }

        /* Update available free count in mbox response */
        rsp->free_count = mcam->bmap_fcnt;

        mutex_unlock(&mcam->lock);
        return 0;
}

int rvu_mbox_handler_npc_mcam_alloc_entry(struct rvu *rvu,
                                          struct npc_mcam_alloc_entry_req *req,
                                          struct npc_mcam_alloc_entry_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 pcifunc = req->hdr.pcifunc;
        int blkaddr;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        rsp->entry = NPC_MCAM_ENTRY_INVALID;
        rsp->free_count = 0;

        /* Check if ref_entry is within range */
        if (req->priority && req->ref_entry >= mcam->bmap_entries) {
                dev_err(rvu->dev, "%s: reference entry %d is out of range\n",
                        __func__, req->ref_entry);
                return NPC_MCAM_INVALID_REQ;
        }

        /* ref_entry can't be '0' if requested priority is high.
         * Can't be last entry if requested priority is low.
         */
        if ((!req->ref_entry && req->priority == NPC_MCAM_HIGHER_PRIO) ||
            ((req->ref_entry == (mcam->bmap_entries - 1)) &&
             req->priority == NPC_MCAM_LOWER_PRIO))
                return NPC_MCAM_INVALID_REQ;

        /* Since list of allocated indices needs to be sent to requester,
         * max number of non-contiguous entries per mbox msg is limited.
         */
        if (!req->contig && req->count > NPC_MAX_NONCONTIG_ENTRIES) {
                dev_err(rvu->dev,
                        "%s: %d Non-contiguous MCAM entries requested is more than max (%d) allowed\n",
                        __func__, req->count, NPC_MAX_NONCONTIG_ENTRIES);
                return NPC_MCAM_INVALID_REQ;
        }

        /* Alloc request from PFFUNC with no NIXLF attached should be denied */
        if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc))
                return NPC_MCAM_ALLOC_DENIED;

        return npc_mcam_alloc_entries(mcam, pcifunc, req, rsp);
}

int rvu_mbox_handler_npc_mcam_free_entry(struct rvu *rvu,
                                         struct npc_mcam_free_entry_req *req,
                                         struct msg_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 pcifunc = req->hdr.pcifunc;
        int blkaddr, rc = 0;
        u16 cntr;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        /* Free request from PFFUNC with no NIXLF attached, ignore */
        if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc))
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);

        if (req->all)
                goto free_all;

        rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
        if (rc)
                goto exit;

        mcam->entry2pfvf_map[req->entry] = NPC_MCAM_INVALID_MAP;
        mcam->entry2target_pffunc[req->entry] = 0x0;
        npc_mcam_clear_bit(mcam, req->entry);
        npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, false);

        /* Update entry2counter mapping */
        cntr = mcam->entry2cntr_map[req->entry];
        if (cntr != NPC_MCAM_INVALID_MAP)
                npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr,
                                              req->entry, cntr);

        goto exit;

free_all:
        /* Free up all entries allocated to requesting PFFUNC */
        npc_mcam_free_all_entries(rvu, mcam, blkaddr, pcifunc);
exit:
        mutex_unlock(&mcam->lock);
        return rc;
}

int rvu_mbox_handler_npc_mcam_read_entry(struct rvu *rvu,
                                         struct npc_mcam_read_entry_req *req,
                                         struct npc_mcam_read_entry_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 pcifunc = req->hdr.pcifunc;
        int blkaddr, rc;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);
        rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
        if (!rc) {
                npc_read_mcam_entry(rvu, mcam, blkaddr, req->entry,
                                    &rsp->entry_data,
                                    &rsp->intf, &rsp->enable);
        }

        mutex_unlock(&mcam->lock);
        return rc;
}

int rvu_mbox_handler_npc_mcam_write_entry(struct rvu *rvu,
                                          struct npc_mcam_write_entry_req *req,
                                          struct msg_rsp *rsp)
{
        struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 pcifunc = req->hdr.pcifunc;
        int blkaddr, rc;
        u8 nix_intf;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);
        rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
        if (rc)
                goto exit;

        if (req->set_cntr &&
            npc_mcam_verify_counter(mcam, pcifunc, req->cntr)) {
                rc = NPC_MCAM_INVALID_REQ;
                goto exit;
        }

        if (!is_npc_interface_valid(rvu, req->intf)) {
                rc = NPC_MCAM_INVALID_REQ;
                goto exit;
        }

        if (is_npc_intf_tx(req->intf))
                nix_intf = pfvf->nix_tx_intf;
        else
                nix_intf = pfvf->nix_rx_intf;

        if (!is_pffunc_af(pcifunc) &&
            npc_mcam_verify_pf_func(rvu, &req->entry_data, req->intf, pcifunc)) {
                rc = NPC_MCAM_INVALID_REQ;
                goto exit;
        }

        /* For AF installed rules, the nix_intf should be set to target NIX */
        if (is_pffunc_af(req->hdr.pcifunc))
                nix_intf = req->intf;

        npc_config_mcam_entry(rvu, mcam, blkaddr, req->entry, nix_intf,
                              &req->entry_data, req->enable_entry);

        if (req->set_cntr)
                npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr,
                                            req->entry, req->cntr);

        rc = 0;
exit:
        mutex_unlock(&mcam->lock);
        return rc;
}

int rvu_mbox_handler_npc_mcam_ena_entry(struct rvu *rvu,
                                        struct npc_mcam_ena_dis_entry_req *req,
                                        struct msg_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 pcifunc = req->hdr.pcifunc;
        int blkaddr, rc;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);
        rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
        mutex_unlock(&mcam->lock);
        if (rc)
                return rc;

        npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, true);

        return 0;
}

int rvu_mbox_handler_npc_mcam_dis_entry(struct rvu *rvu,
                                        struct npc_mcam_ena_dis_entry_req *req,
                                        struct msg_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 pcifunc = req->hdr.pcifunc;
        int blkaddr, rc;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);
        rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
        mutex_unlock(&mcam->lock);
        if (rc)
                return rc;

        npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, false);

        return 0;
}

int rvu_mbox_handler_npc_mcam_shift_entry(struct rvu *rvu,
                                          struct npc_mcam_shift_entry_req *req,
                                          struct npc_mcam_shift_entry_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 pcifunc = req->hdr.pcifunc;
        u16 old_entry, new_entry;
        int blkaddr, rc = 0;
        u16 index, cntr;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        if (req->shift_count > NPC_MCAM_MAX_SHIFTS)
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);
        for (index = 0; index < req->shift_count; index++) {
                old_entry = req->curr_entry[index];
                new_entry = req->new_entry[index];

                /* Check if both old and new entries are valid and
                 * does belong to this PFFUNC or not.
                 */
                rc = npc_mcam_verify_entry(mcam, pcifunc, old_entry);
                if (rc)
                        break;

                rc = npc_mcam_verify_entry(mcam, pcifunc, new_entry);
                if (rc)
                        break;

                /* new_entry should not have a counter mapped */
                if (mcam->entry2cntr_map[new_entry] != NPC_MCAM_INVALID_MAP) {
                        rc = NPC_MCAM_PERM_DENIED;
                        break;
                }

                /* Disable the new_entry */
                npc_enable_mcam_entry(rvu, mcam, blkaddr, new_entry, false);

                /* Copy rule from old entry to new entry */
                npc_copy_mcam_entry(rvu, mcam, blkaddr, old_entry, new_entry);

                /* Copy counter mapping, if any */
                cntr = mcam->entry2cntr_map[old_entry];
                if (cntr != NPC_MCAM_INVALID_MAP) {
                        npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr,
                                                      old_entry, cntr);
                        npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr,
                                                    new_entry, cntr);
                }

                /* Enable new_entry and disable old_entry */
                npc_enable_mcam_entry(rvu, mcam, blkaddr, new_entry, true);
                npc_enable_mcam_entry(rvu, mcam, blkaddr, old_entry, false);
        }

        /* If shift has failed then report the failed index */
        if (index != req->shift_count) {
                rc = NPC_MCAM_PERM_DENIED;
                rsp->failed_entry_idx = index;
        }

        mutex_unlock(&mcam->lock);
        return rc;
}

int rvu_mbox_handler_npc_mcam_alloc_counter(struct rvu *rvu,
                        struct npc_mcam_alloc_counter_req *req,
                        struct npc_mcam_alloc_counter_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 pcifunc = req->hdr.pcifunc;
        u16 max_contig, cntr;
        int blkaddr, index;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        /* If the request is from a PFFUNC with no NIXLF attached, ignore */
        if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc))
                return NPC_MCAM_INVALID_REQ;

        /* Since list of allocated counter IDs needs to be sent to requester,
         * max number of non-contiguous counters per mbox msg is limited.
         */
        if (!req->contig && req->count > NPC_MAX_NONCONTIG_COUNTERS)
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);

        /* Check if unused counters are available or not */
        if (!rvu_rsrc_free_count(&mcam->counters)) {
                mutex_unlock(&mcam->lock);
                return NPC_MCAM_ALLOC_FAILED;
        }

        rsp->count = 0;

        if (req->contig) {
                /* Allocate requested number of contiguous counters, if
                 * unsuccessful find max contiguous entries available.
                 */
                index = npc_mcam_find_zero_area(mcam->counters.bmap,
                                                mcam->counters.max, 0,
                                                req->count, &max_contig);
                rsp->count = max_contig;
                rsp->cntr = index;
                for (cntr = index; cntr < (index + max_contig); cntr++) {
                        __set_bit(cntr, mcam->counters.bmap);
                        mcam->cntr2pfvf_map[cntr] = pcifunc;
                }
        } else {
                /* Allocate requested number of non-contiguous counters,
                 * if unsuccessful allocate as many as possible.
                 */
                for (cntr = 0; cntr < req->count; cntr++) {
                        index = rvu_alloc_rsrc(&mcam->counters);
                        if (index < 0)
                                break;
                        rsp->cntr_list[cntr] = index;
                        rsp->count++;
                        mcam->cntr2pfvf_map[index] = pcifunc;
                }
        }

        mutex_unlock(&mcam->lock);
        return 0;
}

int rvu_mbox_handler_npc_mcam_free_counter(struct rvu *rvu,
                struct npc_mcam_oper_counter_req *req, struct msg_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 index, entry = 0;
        int blkaddr, err;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);
        err = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr);
        if (err) {
                mutex_unlock(&mcam->lock);
                return err;
        }

        /* Mark counter as free/unused */
        mcam->cntr2pfvf_map[req->cntr] = NPC_MCAM_INVALID_MAP;
        rvu_free_rsrc(&mcam->counters, req->cntr);

        /* Disable all MCAM entry's stats which are using this counter */
        while (entry < mcam->bmap_entries) {
                if (!mcam->cntr_refcnt[req->cntr])
                        break;

                index = find_next_bit(mcam->bmap, mcam->bmap_entries, entry);
                if (index >= mcam->bmap_entries)
                        break;
                entry = index + 1;
                if (mcam->entry2cntr_map[index] != req->cntr)
                        continue;

                npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr,
                                              index, req->cntr);
        }

        mutex_unlock(&mcam->lock);
        return 0;
}

int rvu_mbox_handler_npc_mcam_unmap_counter(struct rvu *rvu,
                struct npc_mcam_unmap_counter_req *req, struct msg_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        u16 index, entry = 0;
        int blkaddr, rc;

        blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
        if (blkaddr < 0)
                return NPC_MCAM_INVALID_REQ;

        mutex_lock(&mcam->lock);
        rc = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr);
        if (rc)
                goto exit;

        /* Unmap the MCAM entry and counter */
        if (!req->all) {
                rc = npc_mcam_verify_entry(mcam, req->hdr.pcifunc, req->entry);
                if (rc)
                        goto exit;
                npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr,
                                              req->entry, req->cntr);
                goto exit;
        }

        /* Disable all MCAM entry's stats which are using this counter */
        while (entry < mcam->bmap_entries) {
                if (!mcam->cntr_refcnt[req->cntr])
                        break;

                index = find_next_bit(mcam->bmap, mcam->bmap_entries, entry);
                if (index >= mcam->bmap_entries)
                        break;
                entry = index + 1;

                if (mcam->entry2cntr_map[index] != req->cntr)
                        continue;

                npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr,
                                              index, req->cntr);
        }
exit:
        mutex_unlock(&mcam->lock);
        return rc;
}

int rvu_mbox_handler_npc_mcam_clear_counter(struct rvu *rvu,
                struct npc_mcam_oper_counter_req *req, struct msg_rsp *rsp)
{
        struct npc_mcam *mcam = &rvu->hw->mcam;
        int blkaddr, err;