// SPDX-License-Identifier: GPL-2.0
/* Marvell RVU Ethernet driver
 *
 * Copyright (C) 2020 Marvell.
 *
 */

#include <linux/interrupt.h>
#include <linux/pci.h>
#include <net/tso.h>

#include "otx2_reg.h"
#include "otx2_common.h"
#include "otx2_struct.h"
#include "cn10k.h"

static void otx2_nix_rq_op_stats(struct queue_stats *stats,
                                 struct otx2_nic *pfvf, int qidx)
{
        u64 incr = (u64)qidx << 32;
        u64 *ptr;

        ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_RQ_OP_OCTS);
        stats->bytes = otx2_atomic64_add(incr, ptr);

        ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_RQ_OP_PKTS);
        stats->pkts = otx2_atomic64_add(incr, ptr);
}

static void otx2_nix_sq_op_stats(struct queue_stats *stats,
                                 struct otx2_nic *pfvf, int qidx)
{
        u64 incr = (u64)qidx << 32;
        u64 *ptr;

        ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_OCTS);
        stats->bytes = otx2_atomic64_add(incr, ptr);

        ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_PKTS);
        stats->pkts = otx2_atomic64_add(incr, ptr);
}

void otx2_update_lmac_stats(struct otx2_nic *pfvf)
{
        struct msg_req *req;

        if (!netif_running(pfvf->netdev))
                return;

        mutex_lock(&pfvf->mbox.lock);
        req = otx2_mbox_alloc_msg_cgx_stats(&pfvf->mbox);
        if (!req) {
                mutex_unlock(&pfvf->mbox.lock);
                return;
        }

        otx2_sync_mbox_msg(&pfvf->mbox);
        mutex_unlock(&pfvf->mbox.lock);
}

void otx2_update_lmac_fec_stats(struct otx2_nic *pfvf)
{
        struct msg_req *req;

        if (!netif_running(pfvf->netdev))
                return;
        mutex_lock(&pfvf->mbox.lock);
        req = otx2_mbox_alloc_msg_cgx_fec_stats(&pfvf->mbox);
        if (req)
                otx2_sync_mbox_msg(&pfvf->mbox);
        mutex_unlock(&pfvf->mbox.lock);
}

int otx2_update_rq_stats(struct otx2_nic *pfvf, int qidx)
{
        struct otx2_rcv_queue *rq = &pfvf->qset.rq[qidx];

        if (!pfvf->qset.rq)
                return 0;

        otx2_nix_rq_op_stats(&rq->stats, pfvf, qidx);
        return 1;
}

int otx2_update_sq_stats(struct otx2_nic *pfvf, int qidx)
{
        struct otx2_snd_queue *sq = &pfvf->qset.sq[qidx];

        if (!pfvf->qset.sq)
                return 0;

        otx2_nix_sq_op_stats(&sq->stats, pfvf, qidx);
        return 1;
}

void otx2_get_dev_stats(struct otx2_nic *pfvf)
{
        struct otx2_dev_stats *dev_stats = &pfvf->hw.dev_stats;

#define OTX2_GET_RX_STATS(reg) \
         otx2_read64(pfvf, NIX_LF_RX_STATX(reg))
#define OTX2_GET_TX_STATS(reg) \
         otx2_read64(pfvf, NIX_LF_TX_STATX(reg))

        dev_stats->rx_bytes = OTX2_GET_RX_STATS(RX_OCTS);
        dev_stats->rx_drops = OTX2_GET_RX_STATS(RX_DROP);
        dev_stats->rx_bcast_frames = OTX2_GET_RX_STATS(RX_BCAST);
        dev_stats->rx_mcast_frames = OTX2_GET_RX_STATS(RX_MCAST);
        dev_stats->rx_ucast_frames = OTX2_GET_RX_STATS(RX_UCAST);
        dev_stats->rx_frames = dev_stats->rx_bcast_frames +
                               dev_stats->rx_mcast_frames +
                               dev_stats->rx_ucast_frames;

        dev_stats->tx_bytes = OTX2_GET_TX_STATS(TX_OCTS);
        dev_stats->tx_drops = OTX2_GET_TX_STATS(TX_DROP);
        dev_stats->tx_bcast_frames = OTX2_GET_TX_STATS(TX_BCAST);
        dev_stats->tx_mcast_frames = OTX2_GET_TX_STATS(TX_MCAST);
        dev_stats->tx_ucast_frames = OTX2_GET_TX_STATS(TX_UCAST);
        dev_stats->tx_frames = dev_stats->tx_bcast_frames +
                               dev_stats->tx_mcast_frames +
                               dev_stats->tx_ucast_frames;
}

void otx2_get_stats64(struct net_device *netdev,
                      struct rtnl_link_stats64 *stats)
{
        struct otx2_nic *pfvf = netdev_priv(netdev);
        struct otx2_dev_stats *dev_stats;

        otx2_get_dev_stats(pfvf);

        dev_stats = &pfvf->hw.dev_stats;
        stats->rx_bytes = dev_stats->rx_bytes;
        stats->rx_packets = dev_stats->rx_frames;
        stats->rx_dropped = dev_stats->rx_drops;
        stats->multicast = dev_stats->rx_mcast_frames;

        stats->tx_bytes = dev_stats->tx_bytes;
        stats->tx_packets = dev_stats->tx_frames;
        stats->tx_dropped = dev_stats->tx_drops;
}
EXPORT_SYMBOL(otx2_get_stats64);

/* Sync MAC address with RVU AF */
static int otx2_hw_set_mac_addr(struct otx2_nic *pfvf, u8 *mac)
{
        struct nix_set_mac_addr *req;
        int err;

        mutex_lock(&pfvf->mbox.lock);
        req = otx2_mbox_alloc_msg_nix_set_mac_addr(&pfvf->mbox);
        if (!req) {
                mutex_unlock(&pfvf->mbox.lock);
                return -ENOMEM;
        }

        ether_addr_copy(req->mac_addr, mac);

        err = otx2_sync_mbox_msg(&pfvf->mbox);
        mutex_unlock(&pfvf->mbox.lock);
        return err;
}

static int otx2_hw_get_mac_addr(struct otx2_nic *pfvf,
                                struct net_device *netdev)
{
        struct nix_get_mac_addr_rsp *rsp;
        struct mbox_msghdr *msghdr;
        struct msg_req *req;
        int err;

        mutex_lock(&pfvf->mbox.lock);
        req = otx2_mbox_alloc_msg_nix_get_mac_addr(&pfvf->mbox);
        if (!req) {
                mutex_unlock(&pfvf->mbox.lock);
                return -ENOMEM;
        }

        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err) {
                mutex_unlock(&pfvf->mbox.lock);
                return err;
        }

        msghdr = otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
        if (IS_ERR(msghdr)) {
                mutex_unlock(&pfvf->mbox.lock);
                return PTR_ERR(msghdr);
        }
        rsp = (struct nix_get_mac_addr_rsp *)msghdr;
        ether_addr_copy(netdev->dev_addr, rsp->mac_addr);
        mutex_unlock(&pfvf->mbox.lock);

        return 0;
}

int otx2_set_mac_address(struct net_device *netdev, void *p)
{
        struct otx2_nic *pfvf = netdev_priv(netdev);
        struct sockaddr *addr = p;

        if (!is_valid_ether_addr(addr->sa_data))
                return -EADDRNOTAVAIL;

        if (!otx2_hw_set_mac_addr(pfvf, addr->sa_data)) {
                memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
                /* update dmac field in vlan offload rule */
                if (netif_running(netdev) &&
                    pfvf->flags & OTX2_FLAG_RX_VLAN_SUPPORT)
                        otx2_install_rxvlan_offload_flow(pfvf);
                /* update dmac address in ntuple and DMAC filter list */
                if (pfvf->flags & OTX2_FLAG_DMACFLTR_SUPPORT)
                        otx2_dmacflt_update_pfmac_flow(pfvf);
        } else {
                return -EPERM;
        }

        return 0;
}
EXPORT_SYMBOL(otx2_set_mac_address);

int otx2_hw_set_mtu(struct otx2_nic *pfvf, int mtu)
{
        struct nix_frs_cfg *req;
        int err;

        mutex_lock(&pfvf->mbox.lock);
        req = otx2_mbox_alloc_msg_nix_set_hw_frs(&pfvf->mbox);
        if (!req) {
                mutex_unlock(&pfvf->mbox.lock);
                return -ENOMEM;
        }

        req->maxlen = pfvf->max_frs;

        err = otx2_sync_mbox_msg(&pfvf->mbox);
        mutex_unlock(&pfvf->mbox.lock);
        return err;
}

int otx2_config_pause_frm(struct otx2_nic *pfvf)
{
        struct cgx_pause_frm_cfg *req;
        int err;

        if (is_otx2_lbkvf(pfvf->pdev))
                return 0;

        mutex_lock(&pfvf->mbox.lock);
        req = otx2_mbox_alloc_msg_cgx_cfg_pause_frm(&pfvf->mbox);
        if (!req) {
                err = -ENOMEM;
                goto unlock;
        }

        req->rx_pause = !!(pfvf->flags & OTX2_FLAG_RX_PAUSE_ENABLED);
        req->tx_pause = !!(pfvf->flags & OTX2_FLAG_TX_PAUSE_ENABLED);
        req->set = 1;

        err = otx2_sync_mbox_msg(&pfvf->mbox);
unlock:
        mutex_unlock(&pfvf->mbox.lock);
        return err;
}

int otx2_set_flowkey_cfg(struct otx2_nic *pfvf)
{
        struct otx2_rss_info *rss = &pfvf->hw.rss_info;
        struct nix_rss_flowkey_cfg_rsp *rsp;
        struct nix_rss_flowkey_cfg *req;
        int err;

        mutex_lock(&pfvf->mbox.lock);
        req = otx2_mbox_alloc_msg_nix_rss_flowkey_cfg(&pfvf->mbox);
        if (!req) {
                mutex_unlock(&pfvf->mbox.lock);
                return -ENOMEM;
        }
        req->mcam_index = -1; /* Default or reserved index */
        req->flowkey_cfg = rss->flowkey_cfg;
        req->group = DEFAULT_RSS_CONTEXT_GROUP;

        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err)
                goto fail;

        rsp = (struct nix_rss_flowkey_cfg_rsp *)
                        otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
        if (IS_ERR(rsp)) {
                err = PTR_ERR(rsp);
                goto fail;
        }

        pfvf->hw.flowkey_alg_idx = rsp->alg_idx;
fail:
        mutex_unlock(&pfvf->mbox.lock);
        return err;
}

int otx2_set_rss_table(struct otx2_nic *pfvf, int ctx_id)
{
        struct otx2_rss_info *rss = &pfvf->hw.rss_info;
        const int index = rss->rss_size * ctx_id;
        struct mbox *mbox = &pfvf->mbox;
        struct otx2_rss_ctx *rss_ctx;
        struct nix_aq_enq_req *aq;
        int idx, err;

        mutex_lock(&mbox->lock);
        rss_ctx = rss->rss_ctx[ctx_id];
        /* Get memory to put this msg */
        for (idx = 0; idx < rss->rss_size; idx++) {
                aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox);
                if (!aq) {
                        /* The shared memory buffer can be full.
                         * Flush it and retry
                         */
                        err = otx2_sync_mbox_msg(mbox);
                        if (err) {
                                mutex_unlock(&mbox->lock);
                                return err;
                        }
                        aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox);
                        if (!aq) {
                                mutex_unlock(&mbox->lock);
                                return -ENOMEM;
                        }
                }

                aq->rss.rq = rss_ctx->ind_tbl[idx];

                /* Fill AQ info */
                aq->qidx = index + idx;
                aq->ctype = NIX_AQ_CTYPE_RSS;
                aq->op = NIX_AQ_INSTOP_INIT;
        }
        err = otx2_sync_mbox_msg(mbox);
        mutex_unlock(&mbox->lock);
        return err;
}

void otx2_set_rss_key(struct otx2_nic *pfvf)
{
        struct otx2_rss_info *rss = &pfvf->hw.rss_info;
        u64 *key = (u64 *)&rss->key[4];
        int idx;

        /* 352bit or 44byte key needs to be configured as below
         * NIX_LF_RX_SECRETX0 = key<351:288>
         * NIX_LF_RX_SECRETX1 = key<287:224>
         * NIX_LF_RX_SECRETX2 = key<223:160>
         * NIX_LF_RX_SECRETX3 = key<159:96>
         * NIX_LF_RX_SECRETX4 = key<95:32>
         * NIX_LF_RX_SECRETX5<63:32> = key<31:0>
         */
        otx2_write64(pfvf, NIX_LF_RX_SECRETX(5),
                     (u64)(*((u32 *)&rss->key)) << 32);
        idx = sizeof(rss->key) / sizeof(u64);
        while (idx > 0) {
                idx--;
                otx2_write64(pfvf, NIX_LF_RX_SECRETX(idx), *key++);
        }
}

int otx2_rss_init(struct otx2_nic *pfvf)
{
        struct otx2_rss_info *rss = &pfvf->hw.rss_info;
        struct otx2_rss_ctx *rss_ctx;
        int idx, ret = 0;

        rss->rss_size = sizeof(*rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]);

        /* Init RSS key if it is not setup already */
        if (!rss->enable)
                netdev_rss_key_fill(rss->key, sizeof(rss->key));
        otx2_set_rss_key(pfvf);

        if (!netif_is_rxfh_configured(pfvf->netdev)) {
                /* Set RSS group 0 as default indirection table */
                rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP] = kzalloc(rss->rss_size,
                                                                  GFP_KERNEL);
                if (!rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP])
                        return -ENOMEM;

                rss_ctx = rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP];
                for (idx = 0; idx < rss->rss_size; idx++)
                        rss_ctx->ind_tbl[idx] =
                                ethtool_rxfh_indir_default(idx,
                                                           pfvf->hw.rx_queues);
        }
        ret = otx2_set_rss_table(pfvf, DEFAULT_RSS_CONTEXT_GROUP);
        if (ret)
                return ret;

        /* Flowkey or hash config to be used for generating flow tag */
        rss->flowkey_cfg = rss->enable ? rss->flowkey_cfg :
                           NIX_FLOW_KEY_TYPE_IPV4 | NIX_FLOW_KEY_TYPE_IPV6 |
                           NIX_FLOW_KEY_TYPE_TCP | NIX_FLOW_KEY_TYPE_UDP |
                           NIX_FLOW_KEY_TYPE_SCTP | NIX_FLOW_KEY_TYPE_VLAN |
                           NIX_FLOW_KEY_TYPE_IPV4_PROTO;

        ret = otx2_set_flowkey_cfg(pfvf);
        if (ret)
                return ret;

        rss->enable = true;
        return 0;
}

/* Setup UDP segmentation algorithm in HW */
static void otx2_setup_udp_segmentation(struct nix_lso_format_cfg *lso, bool v4)
{
        struct nix_lso_format *field;

        field = (struct nix_lso_format *)&lso->fields[0];
        lso->field_mask = GENMASK(18, 0);

        /* IP's Length field */
        field->layer = NIX_TXLAYER_OL3;
        /* In ipv4, length field is at offset 2 bytes, for ipv6 it's 4 */
        field->offset = v4 ? 2 : 4;
        field->sizem1 = 1; /* i.e 2 bytes */
        field->alg = NIX_LSOALG_ADD_PAYLEN;
        field++;

        /* No ID field in IPv6 header */
        if (v4) {
                /* Increment IPID */
                field->layer = NIX_TXLAYER_OL3;
                field->offset = 4;
                field->sizem1 = 1; /* i.e 2 bytes */
                field->alg = NIX_LSOALG_ADD_SEGNUM;
                field++;
        }

        /* Update length in UDP header */
        field->layer = NIX_TXLAYER_OL4;
        field->offset = 4;
        field->sizem1 = 1;
        field->alg = NIX_LSOALG_ADD_PAYLEN;
}

/* Setup segmentation algorithms in HW and retrieve algorithm index */
void otx2_setup_segmentation(struct otx2_nic *pfvf)
{
        struct nix_lso_format_cfg_rsp *rsp;
        struct nix_lso_format_cfg *lso;
        struct otx2_hw *hw = &pfvf->hw;
        int err;

        mutex_lock(&pfvf->mbox.lock);

        /* UDPv4 segmentation */
        lso = otx2_mbox_alloc_msg_nix_lso_format_cfg(&pfvf->mbox);
        if (!lso)
                goto fail;

        /* Setup UDP/IP header fields that HW should update per segment */
        otx2_setup_udp_segmentation(lso, true);

        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err)
                goto fail;

        rsp = (struct nix_lso_format_cfg_rsp *)
                        otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &lso->hdr);
        if (IS_ERR(rsp))
                goto fail;

        hw->lso_udpv4_idx = rsp->lso_format_idx;

        /* UDPv6 segmentation */
        lso = otx2_mbox_alloc_msg_nix_lso_format_cfg(&pfvf->mbox);
        if (!lso)
                goto fail;

        /* Setup UDP/IP header fields that HW should update per segment */
        otx2_setup_udp_segmentation(lso, false);

        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err)
                goto fail;

        rsp = (struct nix_lso_format_cfg_rsp *)
                        otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &lso->hdr);
        if (IS_ERR(rsp))
                goto fail;

        hw->lso_udpv6_idx = rsp->lso_format_idx;
        mutex_unlock(&pfvf->mbox.lock);
        return;
fail:
        mutex_unlock(&pfvf->mbox.lock);
        netdev_info(pfvf->netdev,
                    "Failed to get LSO index for UDP GSO offload, disabling\n");
        pfvf->netdev->hw_features &= ~NETIF_F_GSO_UDP_L4;
}

void otx2_config_irq_coalescing(struct otx2_nic *pfvf, int qidx)
{
        /* Configure CQE interrupt coalescing parameters
         *
         * HW triggers an irq when ECOUNT > cq_ecount_wait, hence
         * set 1 less than cq_ecount_wait. And cq_time_wait is in
         * usecs, convert that to 100ns count.
         */
        otx2_write64(pfvf, NIX_LF_CINTX_WAIT(qidx),
                     ((u64)(pfvf->hw.cq_time_wait * 10) << 48) |
                     ((u64)pfvf->hw.cq_qcount_wait << 32) |
                     (pfvf->hw.cq_ecount_wait - 1));
}

int __otx2_alloc_rbuf(struct otx2_nic *pfvf, struct otx2_pool *pool,
                      dma_addr_t *dma)
{
        u8 *buf;

        buf = napi_alloc_frag_align(pool->rbsize, OTX2_ALIGN);
        if (unlikely(!buf))
                return -ENOMEM;

        *dma = dma_map_single_attrs(pfvf->dev, buf, pool->rbsize,
                                    DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
        if (unlikely(dma_mapping_error(pfvf->dev, *dma))) {
                page_frag_free(buf);
                return -ENOMEM;
        }

        return 0;
}

static int otx2_alloc_rbuf(struct otx2_nic *pfvf, struct otx2_pool *pool,
                           dma_addr_t *dma)
{
        int ret;

        local_bh_disable();
        ret = __otx2_alloc_rbuf(pfvf, pool, dma);
        local_bh_enable();
        return ret;
}

int otx2_alloc_buffer(struct otx2_nic *pfvf, struct otx2_cq_queue *cq,
                      dma_addr_t *dma)
{
        if (unlikely(__otx2_alloc_rbuf(pfvf, cq->rbpool, dma))) {
                struct refill_work *work;
                struct delayed_work *dwork;

                work = &pfvf->refill_wrk[cq->cq_idx];
                dwork = &work->pool_refill_work;
                /* Schedule a task if no other task is running */
                if (!cq->refill_task_sched) {
                        cq->refill_task_sched = true;
                        schedule_delayed_work(dwork,
                                              msecs_to_jiffies(100));
                }
                return -ENOMEM;
        }
        return 0;
}

void otx2_tx_timeout(struct net_device *netdev, unsigned int txq)
{
        struct otx2_nic *pfvf = netdev_priv(netdev);

        schedule_work(&pfvf->reset_task);
}
EXPORT_SYMBOL(otx2_tx_timeout);

void otx2_get_mac_from_af(struct net_device *netdev)
{
        struct otx2_nic *pfvf = netdev_priv(netdev);
        int err;

        err = otx2_hw_get_mac_addr(pfvf, netdev);
        if (err)
                dev_warn(pfvf->dev, "Failed to read mac from hardware\n");

        /* If AF doesn't provide a valid MAC, generate a random one */
        if (!is_valid_ether_addr(netdev->dev_addr))
                eth_hw_addr_random(netdev);
}
EXPORT_SYMBOL(otx2_get_mac_from_af);

int otx2_txschq_config(struct otx2_nic *pfvf, int lvl)
{
        struct otx2_hw *hw = &pfvf->hw;
        struct nix_txschq_config *req;
        u64 schq, parent;
        u64 dwrr_val;

        dwrr_val = mtu_to_dwrr_weight(pfvf, pfvf->max_frs);

        req = otx2_mbox_alloc_msg_nix_txschq_cfg(&pfvf->mbox);
        if (!req)
                return -ENOMEM;

        req->lvl = lvl;
        req->num_regs = 1;

        schq = hw->txschq_list[lvl][0];
        /* Set topology e.t.c configuration */
        if (lvl == NIX_TXSCH_LVL_SMQ) {
                req->reg[0] = NIX_AF_SMQX_CFG(schq);
                req->regval[0] = ((pfvf->netdev->max_mtu + OTX2_ETH_HLEN) << 8)
                                  | OTX2_MIN_MTU;

                req->regval[0] |= (0x20ULL << 51) | (0x80ULL << 39) |
                                  (0x2ULL << 36);
                req->num_regs++;
                /* MDQ config */
                parent =  hw->txschq_list[NIX_TXSCH_LVL_TL4][0];
                req->reg[1] = NIX_AF_MDQX_PARENT(schq);
                req->regval[1] = parent << 16;
                req->num_regs++;
                /* Set DWRR quantum */
                req->reg[2] = NIX_AF_MDQX_SCHEDULE(schq);
                req->regval[2] =  dwrr_val;
        } else if (lvl == NIX_TXSCH_LVL_TL4) {
                parent =  hw->txschq_list[NIX_TXSCH_LVL_TL3][0];
                req->reg[0] = NIX_AF_TL4X_PARENT(schq);
                req->regval[0] = parent << 16;
                req->num_regs++;
                req->reg[1] = NIX_AF_TL4X_SCHEDULE(schq);
                req->regval[1] = dwrr_val;
        } else if (lvl == NIX_TXSCH_LVL_TL3) {
                parent = hw->txschq_list[NIX_TXSCH_LVL_TL2][0];
                req->reg[0] = NIX_AF_TL3X_PARENT(schq);
                req->regval[0] = parent << 16;
                req->num_regs++;
                req->reg[1] = NIX_AF_TL3X_SCHEDULE(schq);
                req->regval[1] = dwrr_val;
        } else if (lvl == NIX_TXSCH_LVL_TL2) {
                parent =  hw->txschq_list[NIX_TXSCH_LVL_TL1][0];
                req->reg[0] = NIX_AF_TL2X_PARENT(schq);
                req->regval[0] = parent << 16;

                req->num_regs++;
                req->reg[1] = NIX_AF_TL2X_SCHEDULE(schq);
                req->regval[1] = TXSCH_TL1_DFLT_RR_PRIO << 24 | dwrr_val;

                req->num_regs++;
                req->reg[2] = NIX_AF_TL3_TL2X_LINKX_CFG(schq, hw->tx_link);
                /* Enable this queue and backpressure */
                req->regval[2] = BIT_ULL(13) | BIT_ULL(12);

        } else if (lvl == NIX_TXSCH_LVL_TL1) {
                /* Default config for TL1.
                 * For VF this is always ignored.
                 */

                /* On CN10K, if RR_WEIGHT is greater than 16384, HW will
                 * clip it to 16384, so configuring a 24bit max value
                 * will work on both OTx2 and CN10K.
                 */
                req->reg[0] = NIX_AF_TL1X_SCHEDULE(schq);
                req->regval[0] = TXSCH_TL1_DFLT_RR_QTM;

                req->num_regs++;
                req->reg[1] = NIX_AF_TL1X_TOPOLOGY(schq);
                req->regval[1] = (TXSCH_TL1_DFLT_RR_PRIO << 1);

                req->num_regs++;
                req->reg[2] = NIX_AF_TL1X_CIR(schq);
                req->regval[2] = 0;
        }

        return otx2_sync_mbox_msg(&pfvf->mbox);
}

int otx2_txsch_alloc(struct otx2_nic *pfvf)
{
        struct nix_txsch_alloc_req *req;
        int lvl;

        /* Get memory to put this msg */
        req = otx2_mbox_alloc_msg_nix_txsch_alloc(&pfvf->mbox);
        if (!req)
                return -ENOMEM;

        /* Request one schq per level */
        for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++)
                req->schq[lvl] = 1;

        return otx2_sync_mbox_msg(&pfvf->mbox);
}

int otx2_txschq_stop(struct otx2_nic *pfvf)
{
        struct nix_txsch_free_req *free_req;
        int lvl, schq, err;

        mutex_lock(&pfvf->mbox.lock);
        /* Free the transmit schedulers */
        free_req = otx2_mbox_alloc_msg_nix_txsch_free(&pfvf->mbox);
        if (!free_req) {
                mutex_unlock(&pfvf->mbox.lock);
                return -ENOMEM;
        }

        free_req->flags = TXSCHQ_FREE_ALL;
        err = otx2_sync_mbox_msg(&pfvf->mbox);
        mutex_unlock(&pfvf->mbox.lock);

        /* Clear the txschq list */
        for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
                for (schq = 0; schq < MAX_TXSCHQ_PER_FUNC; schq++)
                        pfvf->hw.txschq_list[lvl][schq] = 0;
        }
        return err;
}

void otx2_sqb_flush(struct otx2_nic *pfvf)
{
        int qidx, sqe_tail, sqe_head;
        u64 incr, *ptr, val;
        int timeout = 1000;

        ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_STATUS);
        for (qidx = 0; qidx < pfvf->hw.tx_queues; qidx++) {
                incr = (u64)qidx << 32;
                while (timeout) {
                        val = otx2_atomic64_add(incr, ptr);
                        sqe_head = (val >> 20) & 0x3F;
                        sqe_tail = (val >> 28) & 0x3F;
                        if (sqe_head == sqe_tail)
                                break;
                        usleep_range(1, 3);
                        timeout--;
                }
        }
}

/* RED and drop levels of CQ on packet reception.
 * For CQ level is measure of emptiness ( 0x0 = full, 255 = empty).
 */
#define RQ_PASS_LVL_CQ(skid, qsize)     ((((skid) + 16) * 256) / (qsize))
#define RQ_DROP_LVL_CQ(skid, qsize)     (((skid) * 256) / (qsize))

/* RED and drop levels of AURA for packet reception.
 * For AURA level is measure of fullness (0x0 = empty, 255 = full).
 * Eg: For RQ length 1K, for pass/drop level 204/230.
 * RED accepts pkts if free pointers > 102 & <= 205.
 * Drops pkts if free pointers < 102.
 */
#define RQ_BP_LVL_AURA   (255 - ((85 * 256) / 100)) /* BP when 85% is full */
#define RQ_PASS_LVL_AURA (255 - ((95 * 256) / 100)) /* RED when 95% is full */
#define RQ_DROP_LVL_AURA (255 - ((99 * 256) / 100)) /* Drop when 99% is full */

static int otx2_rq_init(struct otx2_nic *pfvf, u16 qidx, u16 lpb_aura)
{
        struct otx2_qset *qset = &pfvf->qset;
        struct nix_aq_enq_req *aq;

        /* Get memory to put this msg */
        aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox);
        if (!aq)
                return -ENOMEM;

        aq->rq.cq = qidx;
        aq->rq.ena = 1;
        aq->rq.pb_caching = 1;
        aq->rq.lpb_aura = lpb_aura; /* Use large packet buffer aura */
        aq->rq.lpb_sizem1 = (DMA_BUFFER_LEN(pfvf->rbsize) / 8) - 1;
        aq->rq.xqe_imm_size = 0; /* Copying of packet to CQE not needed */
        aq->rq.flow_tagw = 32; /* Copy full 32bit flow_tag to CQE header */
        aq->rq.qint_idx = 0;
        aq->rq.lpb_drop_ena = 1; /* Enable RED dropping for AURA */
        aq->rq.xqe_drop_ena = 1; /* Enable RED dropping for CQ/SSO */
        aq->rq.xqe_pass = RQ_PASS_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt);
        aq->rq.xqe_drop = RQ_DROP_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt);
        aq->rq.lpb_aura_pass = RQ_PASS_LVL_AURA;
        aq->rq.lpb_aura_drop = RQ_DROP_LVL_AURA;

        /* Fill AQ info */
        aq->qidx = qidx;
        aq->ctype = NIX_AQ_CTYPE_RQ;
        aq->op = NIX_AQ_INSTOP_INIT;

        return otx2_sync_mbox_msg(&pfvf->mbox);
}

int otx2_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura)
{
        struct otx2_nic *pfvf = dev;
        struct otx2_snd_queue *sq;
        struct nix_aq_enq_req *aq;

        sq = &pfvf->qset.sq[qidx];
        sq->lmt_addr = (__force u64 *)(pfvf->reg_base + LMT_LF_LMTLINEX(qidx));
        /* Get memory to put this msg */
        aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox);
        if (!aq)
                return -ENOMEM;

        aq->sq.cq = pfvf->hw.rx_queues + qidx;
        aq->sq.max_sqe_size = NIX_MAXSQESZ_W16; /* 128 byte */
        aq->sq.cq_ena = 1;
        aq->sq.ena = 1;
        /* Only one SMQ is allocated, map all SQ's to that SMQ  */
        aq->sq.smq = pfvf->hw.txschq_list[NIX_TXSCH_LVL_SMQ][0];
        aq->sq.smq_rr_quantum = mtu_to_dwrr_weight(pfvf, pfvf->max_frs);
        aq->sq.default_chan = pfvf->hw.tx_chan_base;
        aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */
        aq->sq.sqb_aura = sqb_aura;
        aq->sq.sq_int_ena = NIX_SQINT_BITS;
        aq->sq.qint_idx = 0;
        /* Due pipelining impact minimum 2000 unused SQ CQE's
         * need to maintain to avoid CQ overflow.
         */
        aq->sq.cq_limit = ((SEND_CQ_SKID * 256) / (pfvf->qset.sqe_cnt));

        /* Fill AQ info */
        aq->qidx = qidx;
        aq->ctype = NIX_AQ_CTYPE_SQ;
        aq->op = NIX_AQ_INSTOP_INIT;

        return otx2_sync_mbox_msg(&pfvf->mbox);
}

static int otx2_sq_init(struct otx2_nic *pfvf, u16 qidx, u16 sqb_aura)
{
        struct otx2_qset *qset = &pfvf->qset;
        struct otx2_snd_queue *sq;
        struct otx2_pool *pool;
        int err;

        pool = &pfvf->qset.pool[sqb_aura];
        sq = &qset->sq[qidx];
        sq->sqe_size = NIX_SQESZ_W16 ? 64 : 128;
        sq->sqe_cnt = qset->sqe_cnt;

        err = qmem_alloc(pfvf->dev, &sq->sqe, 1, sq->sqe_size);
        if (err)
                return err;

        err = qmem_alloc(pfvf->dev, &sq->tso_hdrs, qset->sqe_cnt,
                         TSO_HEADER_SIZE);
        if (err)
                return err;

        sq->sqe_base = sq->sqe->base;
        sq->sg = kcalloc(qset->sqe_cnt, sizeof(struct sg_list), GFP_KERNEL);
        if (!sq->sg)
                return -ENOMEM;

        if (pfvf->ptp) {
                err = qmem_alloc(pfvf->dev, &sq->timestamps, qset->sqe_cnt,
                                 sizeof(*sq->timestamps));
                if (err)
                        return err;
        }

        sq->head = 0;
        sq->sqe_per_sqb = (pfvf->hw.sqb_size / sq->sqe_size) - 1;
        sq->num_sqbs = (qset->sqe_cnt + sq->sqe_per_sqb) / sq->sqe_per_sqb;
        /* Set SQE threshold to 10% of total SQEs */
        sq->sqe_thresh = ((sq->num_sqbs * sq->sqe_per_sqb) * 10) / 100;
        sq->aura_id = sqb_aura;
        sq->aura_fc_addr = pool->fc_addr->base;
        sq->io_addr = (__force u64)otx2_get_regaddr(pfvf, NIX_LF_OP_SENDX(0));

        sq->stats.bytes = 0;
        sq->stats.pkts = 0;

        return pfvf->hw_ops->sq_aq_init(pfvf, qidx, sqb_aura);

}

static int otx2_cq_init(struct otx2_nic *pfvf, u16 qidx)
{
        struct otx2_qset *qset = &pfvf->qset;
        struct nix_aq_enq_req *aq;
        struct otx2_cq_queue *cq;
        int err, pool_id;

        cq = &qset->cq[qidx];
        cq->cq_idx = qidx;
        if (qidx < pfvf->hw.rx_queues) {
                cq->cq_type = CQ_RX;
                cq->cint_idx = qidx;
                cq->cqe_cnt = qset->rqe_cnt;
        } else {
                cq->cq_type = CQ_TX;
                cq->cint_idx = qidx - pfvf->hw.rx_queues;
                cq->cqe_cnt = qset->sqe_cnt;
        }
        cq->cqe_size = pfvf->qset.xqe_size;

        /* Allocate memory for CQEs */
        err = qmem_alloc(pfvf->dev, &cq->cqe, cq->cqe_cnt, cq->cqe_size);
        if (err)
                return err;

        /* Save CQE CPU base for faster reference */
        cq->cqe_base = cq->cqe->base;
        /* In case where all RQs auras point to single pool,
         * all CQs receive buffer pool also point to same pool.
         */
        pool_id = ((cq->cq_type == CQ_RX) &&
                   (pfvf->hw.rqpool_cnt != pfvf->hw.rx_queues)) ? 0 : qidx;
        cq->rbpool = &qset->pool[pool_id];
        cq->refill_task_sched = false;

        /* Get memory to put this msg */
        aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox);
        if (!aq)
                return -ENOMEM;

        aq->cq.ena = 1;
        aq->cq.qsize = Q_SIZE(cq->cqe_cnt, 4);
        aq->cq.caching = 1;
        aq->cq.base = cq->cqe->iova;
        aq->cq.cint_idx = cq->cint_idx;
        aq->cq.cq_err_int_ena = NIX_CQERRINT_BITS;
        aq->cq.qint_idx = 0;
        aq->cq.avg_level = 255;

        if (qidx < pfvf->hw.rx_queues) {
                aq->cq.drop = RQ_DROP_LVL_CQ(pfvf->hw.rq_skid, cq->cqe_cnt);
                aq->cq.drop_ena = 1;

                if (!is_otx2_lbkvf(pfvf->pdev)) {
                        /* Enable receive CQ backpressure */
                        aq->cq.bp_ena = 1;
                        aq->cq.bpid = pfvf->bpid[0];

                        /* Set backpressure level is same as cq pass level */
                        aq->cq.bp = RQ_PASS_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt);
                }
        }

        /* Fill AQ info */
        aq->qidx = qidx;
        aq->ctype = NIX_AQ_CTYPE_CQ;
        aq->op = NIX_AQ_INSTOP_INIT;

        return otx2_sync_mbox_msg(&pfvf->mbox);
}

static void otx2_pool_refill_task(struct work_struct *work)
{
        struct otx2_cq_queue *cq;
        struct otx2_pool *rbpool;
        struct refill_work *wrk;
        int qidx, free_ptrs = 0;
        struct otx2_nic *pfvf;
        dma_addr_t bufptr;

        wrk = container_of(work, struct refill_work, pool_refill_work.work);
        pfvf = wrk->pf;
        qidx = wrk - pfvf->refill_wrk;
        cq = &pfvf->qset.cq[qidx];
        rbpool = cq->rbpool;
        free_ptrs = cq->pool_ptrs;

        while (cq->pool_ptrs) {
                if (otx2_alloc_rbuf(pfvf, rbpool, &bufptr)) {
                        /* Schedule a WQ if we fails to free atleast half of the
                         * pointers else enable napi for this RQ.
                         */
                        if (!((free_ptrs - cq->pool_ptrs) > free_ptrs / 2)) {
                                struct delayed_work *dwork;

                                dwork = &wrk->pool_refill_work;
                                schedule_delayed_work(dwork,
                                                      msecs_to_jiffies(100));
                        } else {
                                cq->refill_task_sched = false;
                        }
                        return;
                }
                pfvf->hw_ops->aura_freeptr(pfvf, qidx, bufptr + OTX2_HEAD_ROOM);
                cq->pool_ptrs--;
        }
        cq->refill_task_sched = false;
}

int otx2_config_nix_queues(struct otx2_nic *pfvf)
{
        int qidx, err;

        /* Initialize RX queues */
        for (qidx = 0; qidx < pfvf->hw.rx_queues; qidx++) {
                u16 lpb_aura = otx2_get_pool_idx(pfvf, AURA_NIX_RQ, qidx);

                err = otx2_rq_init(pfvf, qidx, lpb_aura);
                if (err)
                        return err;
        }

        /* Initialize TX queues */
        for (qidx = 0; qidx < pfvf->hw.tx_queues; qidx++) {
                u16 sqb_aura = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx);

                err = otx2_sq_init(pfvf, qidx, sqb_aura);
                if (err)
                        return err;
        }

        /* Initialize completion queues */
        for (qidx = 0; qidx < pfvf->qset.cq_cnt; qidx++) {
                err = otx2_cq_init(pfvf, qidx);
                if (err)
                        return err;
        }

        /* Initialize work queue for receive buffer refill */
        pfvf->refill_wrk = devm_kcalloc(pfvf->dev, pfvf->qset.cq_cnt,
                                        sizeof(struct refill_work), GFP_KERNEL);
        if (!pfvf->refill_wrk)
                return -ENOMEM;

        for (qidx = 0; qidx < pfvf->qset.cq_cnt; qidx++) {
                pfvf->refill_wrk[qidx].pf = pfvf;
                INIT_DELAYED_WORK(&pfvf->refill_wrk[qidx].pool_refill_work,
                                  otx2_pool_refill_task);
        }
        return 0;
}

int otx2_config_nix(struct otx2_nic *pfvf)
{
        struct nix_lf_alloc_req  *nixlf;
        struct nix_lf_alloc_rsp *rsp;
        int err;

        pfvf->qset.xqe_size = NIX_XQESZ_W16 ? 128 : 512;

        /* Get memory to put this msg */
        nixlf = otx2_mbox_alloc_msg_nix_lf_alloc(&pfvf->mbox);
        if (!nixlf)
                return -ENOMEM;

        /* Set RQ/SQ/CQ counts */
        nixlf->rq_cnt = pfvf->hw.rx_queues;
        nixlf->sq_cnt = pfvf->hw.tx_queues;
        nixlf->cq_cnt = pfvf->qset.cq_cnt;
        nixlf->rss_sz = MAX_RSS_INDIR_TBL_SIZE;
        nixlf->rss_grps = MAX_RSS_GROUPS;
        nixlf->xqe_sz = NIX_XQESZ_W16;
        /* We don't know absolute NPA LF idx attached.
         * AF will replace 'RVU_DEFAULT_PF_FUNC' with
         * NPA LF attached to this RVU PF/VF.
         */
        nixlf->npa_func = RVU_DEFAULT_PF_FUNC;
        /* Disable alignment pad, enable L2 length check,
         * enable L4 TCP/UDP checksum verification.
         */
        nixlf->rx_cfg = BIT_ULL(33) | BIT_ULL(35) | BIT_ULL(37);

        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err)
                return err;

        rsp = (struct nix_lf_alloc_rsp *)otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0,
                                                           &nixlf->hdr);
        if (IS_ERR(rsp))
                return PTR_ERR(rsp);

        if (rsp->qints < 1)
                return -ENXIO;

        return rsp->hdr.rc;
}

void otx2_sq_free_sqbs(struct otx2_nic *pfvf)
{
        struct otx2_qset *qset = &pfvf->qset;
        struct otx2_hw *hw = &pfvf->hw;
        struct otx2_snd_queue *sq;
        int sqb, qidx;
        u64 iova, pa;

        for (qidx = 0; qidx < hw->tx_queues; qidx++) {
                sq = &qset->sq[qidx];
                if (!sq->sqb_ptrs)
                        continue;
                for (sqb = 0; sqb < sq->sqb_count; sqb++) {
                        if (!sq->sqb_ptrs[sqb])
                                continue;
                        iova = sq->sqb_ptrs[sqb];
                        pa = otx2_iova_to_phys(pfvf->iommu_domain, iova);
                        dma_unmap_page_attrs(pfvf->dev, iova, hw->sqb_size,
                                             DMA_FROM_DEVICE,
                                             DMA_ATTR_SKIP_CPU_SYNC);
                        put_page(virt_to_page(phys_to_virt(pa)));
                }
                sq->sqb_count = 0;
        }
}

void otx2_free_aura_ptr(struct otx2_nic *pfvf, int type)
{
        int pool_id, pool_start = 0, pool_end = 0, size = 0;
        u64 iova, pa;

        if (type == AURA_NIX_SQ) {
                pool_start = otx2_get_pool_idx(pfvf, type, 0);
                pool_end =  pool_start + pfvf->hw.sqpool_cnt;
                size = pfvf->hw.sqb_size;
        }
        if (type == AURA_NIX_RQ) {
                pool_start = otx2_get_pool_idx(pfvf, type, 0);
                pool_end = pfvf->hw.rqpool_cnt;
                size = pfvf->rbsize;
        }

        /* Free SQB and RQB pointers from the aura pool */
        for (pool_id = pool_start; pool_id < pool_end; pool_id++) {
                iova = otx2_aura_allocptr(pfvf, pool_id);
                while (iova) {
                        if (type == AURA_NIX_RQ)
                                iova -= OTX2_HEAD_ROOM;

                        pa = otx2_iova_to_phys(pfvf->iommu_domain, iova);
                        dma_unmap_page_attrs(pfvf->dev, iova, size,
                                             DMA_FROM_DEVICE,
                                             DMA_ATTR_SKIP_CPU_SYNC);
                        put_page(virt_to_page(phys_to_virt(pa)));
                        iova = otx2_aura_allocptr(pfvf, pool_id);
                }
        }
}

void otx2_aura_pool_free(struct otx2_nic *pfvf)
{
        struct otx2_pool *pool;
        int pool_id;

        if (!pfvf->qset.pool)
                return;

        for (pool_id = 0; pool_id < pfvf->hw.pool_cnt; pool_id++) {
                pool = &pfvf->qset.pool[pool_id];
                qmem_free(pfvf->dev, pool->stack);
                qmem_free(pfvf->dev, pool->fc_addr);
        }
        devm_kfree(pfvf->dev, pfvf->qset.pool);
        pfvf->qset.pool = NULL;
}

static int otx2_aura_init(struct otx2_nic *pfvf, int aura_id,
                          int pool_id, int numptrs)
{
        struct npa_aq_enq_req *aq;
        struct otx2_pool *pool;
        int err;

        pool = &pfvf->qset.pool[pool_id];

        /* Allocate memory for HW to update Aura count.
         * Alloc one cache line, so that it fits all FC_STYPE modes.
         */
        if (!pool->fc_addr) {
                err = qmem_alloc(pfvf->dev, &pool->fc_addr, 1, OTX2_ALIGN);
                if (err)
                        return err;
        }

        /* Initialize this aura's context via AF */
        aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
        if (!aq) {
                /* Shared mbox memory buffer is full, flush it and retry */
                err = otx2_sync_mbox_msg(&pfvf->mbox);
                if (err)
                        return err;
                aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
                if (!aq)
                        return -ENOMEM;
        }

        aq->aura_id = aura_id;
        /* Will be filled by AF with correct pool context address */
        aq->aura.pool_addr = pool_id;
        aq->aura.pool_caching = 1;
        aq->aura.shift = ilog2(numptrs) - 8;
        aq->aura.count = numptrs;
        aq->aura.limit = numptrs;
        aq->aura.avg_level = 255;
        aq->aura.ena = 1;
        aq->aura.fc_ena = 1;
        aq->aura.fc_addr = pool->fc_addr->iova;
        aq->aura.fc_hyst_bits = 0; /* Store count on all updates */

        /* Enable backpressure for RQ aura */
        if (aura_id < pfvf->hw.rqpool_cnt && !is_otx2_lbkvf(pfvf->pdev)) {
                aq->aura.bp_ena = 0;
                /* If NIX1 LF is attached then specify NIX1_RX.
                 *
                 * Below NPA_AURA_S[BP_ENA] is set according to the
                 * NPA_BPINTF_E enumeration given as:
                 * 0x0 + a*0x1 where 'a' is 0 for NIX0_RX and 1 for NIX1_RX so
                 * NIX0_RX is 0x0 + 0*0x1 = 0
                 * NIX1_RX is 0x0 + 1*0x1 = 1
                 * But in HRM it is given that
                 * "NPA_AURA_S[BP_ENA](w1[33:32]) - Enable aura backpressure to
                 * NIX-RX based on [BP] level. One bit per NIX-RX; index
                 * enumerated by NPA_BPINTF_E."
                 */
                if (pfvf->nix_blkaddr == BLKADDR_NIX1)
                        aq->aura.bp_ena = 1;
                aq->aura.nix0_bpid = pfvf->bpid[0];

                /* Set backpressure level for RQ's Aura */
                aq->aura.bp = RQ_BP_LVL_AURA;
        }

        /* Fill AQ info */
        aq->ctype = NPA_AQ_CTYPE_AURA;
        aq->op = NPA_AQ_INSTOP_INIT;

        return 0;
}

static int otx2_pool_init(struct otx2_nic *pfvf, u16 pool_id,
                          int stack_pages, int numptrs, int buf_size)
{
        struct npa_aq_enq_req *aq;
        struct otx2_pool *pool;
        int err;

        pool = &pfvf->qset.pool[pool_id];
        /* Alloc memory for stack which is used to store buffer pointers */
        err = qmem_alloc(pfvf->dev, &pool->stack,
                         stack_pages, pfvf->hw.stack_pg_bytes);
        if (err)
                return err;

        pool->rbsize = buf_size;

        /* Initialize this pool's context via AF */
        aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
        if (!aq) {
                /* Shared mbox memory buffer is full, flush it and retry */
                err = otx2_sync_mbox_msg(&pfvf->mbox);
                if (err) {
                        qmem_free(pfvf->dev, pool->stack);
                        return err;
                }
                aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
                if (!aq) {
                        qmem_free(pfvf->dev, pool->stack);
                        return -ENOMEM;
                }
        }

        aq->aura_id = pool_id;
        aq->pool.stack_base = pool->stack->iova;
        aq->pool.stack_caching = 1;
        aq->pool.ena = 1;
        aq->pool.buf_size = buf_size / 128;
        aq->pool.stack_max_pages = stack_pages;
        aq->pool.shift = ilog2(numptrs) - 8;
        aq->pool.ptr_start = 0;
        aq->pool.ptr_end = ~0ULL;

        /* Fill AQ info */
        aq->ctype = NPA_AQ_CTYPE_POOL;
        aq->op = NPA_AQ_INSTOP_INIT;

        return 0;
}

int otx2_sq_aura_pool_init(struct otx2_nic *pfvf)
{
        int qidx, pool_id, stack_pages, num_sqbs;
        struct otx2_qset *qset = &pfvf->qset;
        struct otx2_hw *hw = &pfvf->hw;
        struct otx2_snd_queue *sq;
        struct otx2_pool *pool;
        dma_addr_t bufptr;
        int err, ptr;

        /* Calculate number of SQBs needed.
         *
         * For a 128byte SQE, and 4K size SQB, 31 SQEs will fit in one SQB.
         * Last SQE is used for pointing to next SQB.
         */
        num_sqbs = (hw->sqb_size / 128) - 1;
        num_sqbs = (qset->sqe_cnt + num_sqbs) / num_sqbs;

        /* Get no of stack pages needed */
        stack_pages =
                (num_sqbs + hw->stack_pg_ptrs - 1) / hw->stack_pg_ptrs;

        for (qidx = 0; qidx < hw->tx_queues; qidx++) {
                pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx);
                /* Initialize aura context */
                err = otx2_aura_init(pfvf, pool_id, pool_id, num_sqbs);
                if (err)
                        goto fail;

                /* Initialize pool context */
                err = otx2_pool_init(pfvf, pool_id, stack_pages,
                                     num_sqbs, hw->sqb_size);
                if (err)
                        goto fail;
        }

        /* Flush accumulated messages */
        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err)
                goto fail;

        /* Allocate pointers and free them to aura/pool */
        for (qidx = 0; qidx < hw->tx_queues; qidx++) {
                pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx);
                pool = &pfvf->qset.pool[pool_id];

                sq = &qset->sq[qidx];
                sq->sqb_count = 0;
                sq->sqb_ptrs = kcalloc(num_sqbs, sizeof(*sq->sqb_ptrs), GFP_KERNEL);
                if (!sq->sqb_ptrs)
                        return -ENOMEM;

                for (ptr = 0; ptr < num_sqbs; ptr++) {
                        if (otx2_alloc_rbuf(pfvf, pool, &bufptr))
                                return -ENOMEM;
                        pfvf->hw_ops->aura_freeptr(pfvf, pool_id, bufptr);
                        sq->sqb_ptrs[sq->sqb_count++] = (u64)bufptr;
                }
        }

        return 0;
fail:
        otx2_mbox_reset(&pfvf->mbox.mbox, 0);
        otx2_aura_pool_free(pfvf);
        return err;
}

int otx2_rq_aura_pool_init(struct otx2_nic *pfvf)
{
        struct otx2_hw *hw = &pfvf->hw;
        int stack_pages, pool_id, rq;
        struct otx2_pool *pool;
        int err, ptr, num_ptrs;
        dma_addr_t bufptr;

        num_ptrs = pfvf->qset.rqe_cnt;

        stack_pages =
                (num_ptrs + hw->stack_pg_ptrs - 1) / hw->stack_pg_ptrs;

        for (rq = 0; rq < hw->rx_queues; rq++) {
                pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_RQ, rq);
                /* Initialize aura context */
                err = otx2_aura_init(pfvf, pool_id, pool_id, num_ptrs);
                if (err)
                        goto fail;
        }
        for (pool_id = 0; pool_id < hw->rqpool_cnt; pool_id++) {
                err = otx2_pool_init(pfvf, pool_id, stack_pages,
                                     num_ptrs, pfvf->rbsize);
                if (err)
                        goto fail;
        }

        /* Flush accumulated messages */
        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err)
                goto fail;

        /* Allocate pointers and free them to aura/pool */
        for (pool_id = 0; pool_id < hw->rqpool_cnt; pool_id++) {
                pool = &pfvf->qset.pool[pool_id];
                for (ptr = 0; ptr < num_ptrs; ptr++) {
                        if (otx2_alloc_rbuf(pfvf, pool, &bufptr))
                                return -ENOMEM;
                        pfvf->hw_ops->aura_freeptr(pfvf, pool_id,
                                                   bufptr + OTX2_HEAD_ROOM);
                }
        }

        return 0;
fail:
        otx2_mbox_reset(&pfvf->mbox.mbox, 0);
        otx2_aura_pool_free(pfvf);
        return err;
}

int otx2_config_npa(struct otx2_nic *pfvf)
{
        struct otx2_qset *qset = &pfvf->qset;
        struct npa_lf_alloc_req  *npalf;
        struct otx2_hw *hw = &pfvf->hw;
        int aura_cnt;

        /* Pool - Stack of free buffer pointers
         * Aura - Alloc/frees pointers from/to pool for NIX DMA.
         */

        if (!hw->pool_cnt)
                return -EINVAL;

        qset->pool = devm_kcalloc(pfvf->dev, hw->pool_cnt,
                                  sizeof(struct otx2_pool), GFP_KERNEL);
        if (!qset->pool)
                return -ENOMEM;

        /* Get memory to put this msg */
        npalf = otx2_mbox_alloc_msg_npa_lf_alloc(&pfvf->mbox);
        if (!npalf)
                return -ENOMEM;

        /* Set aura and pool counts */
        npalf->nr_pools = hw->pool_cnt;
        aura_cnt = ilog2(roundup_pow_of_two(hw->pool_cnt));
        npalf->aura_sz = (aura_cnt >= ilog2(128)) ? (aura_cnt - 6) : 1;

        return otx2_sync_mbox_msg(&pfvf->mbox);
}

int otx2_detach_resources(struct mbox *mbox)
{
        struct rsrc_detach *detach;

        mutex_lock(&mbox->lock);
        detach = otx2_mbox_alloc_msg_detach_resources(mbox);
        if (!detach) {
                mutex_unlock(&mbox->lock);
                return -ENOMEM;
        }

        /* detach all */
        detach->partial = false;

        /* Send detach request to AF */
        otx2_mbox_msg_send(&mbox->mbox, 0);
        mutex_unlock(&mbox->lock);
        return 0;
}
EXPORT_SYMBOL(otx2_detach_resources);

int otx2_attach_npa_nix(struct otx2_nic *pfvf)
{
        struct rsrc_attach *attach;
        struct msg_req *msix;
        int err;

        mutex_lock(&pfvf->mbox.lock);
        /* Get memory to put this msg */
        attach = otx2_mbox_alloc_msg_attach_resources(&pfvf->mbox);
        if (!attach) {
                mutex_unlock(&pfvf->mbox.lock);
                return -ENOMEM;
        }

        attach->npalf = true;
        attach->nixlf = true;

        /* Send attach request to AF */
        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err) {
                mutex_unlock(&pfvf->mbox.lock);
                return err;
        }

        pfvf->nix_blkaddr = BLKADDR_NIX0;

        /* If the platform has two NIX blocks then LF may be
         * allocated from NIX1.
         */
        if (otx2_read64(pfvf, RVU_PF_BLOCK_ADDRX_DISC(BLKADDR_NIX1)) & 0x1FFULL)
                pfvf->nix_blkaddr = BLKADDR_NIX1;

        /* Get NPA and NIX MSIX vector offsets */
        msix = otx2_mbox_alloc_msg_msix_offset(&pfvf->mbox);
        if (!msix) {
                mutex_unlock(&pfvf->mbox.lock);
                return -ENOMEM;
        }

        err = otx2_sync_mbox_msg(&pfvf->mbox);
        if (err) {
                mutex_unlock(&pfvf->mbox.lock);
                return err;
        }
        mutex_unlock(&pfvf->mbox.lock);

        if (pfvf->hw.npa_msixoff == MSIX_VECTOR_INVALID ||
            pfvf->hw.nix_msixoff == MSIX_VECTOR_INVALID) {
                dev_err(pfvf->dev,
                        "RVUPF: Invalid MSIX vector offset for NPA/NIX\n");
                return -EINVAL;
        }

        return 0;
}
EXPORT_SYMBOL(otx2_attach_npa_nix);

void otx2_ctx_disable(struct mbox *mbox, int type, bool npa)
{
        struct hwctx_disable_req *req;

        mutex_lock(&mbox->lock);
        /* Request AQ to disable this context */
        if (npa)
                req = otx2_mbox_alloc_msg_npa_hwctx_disable(mbox);
        else
                req = otx2_mbox_alloc_msg_nix_hwctx_disable(mbox);

        if (!req) {
                mutex_unlock(&mbox->lock);
                return;
        }

        req->ctype = type;

        if (otx2_sync_mbox_msg(mbox))
                dev_err(mbox->pfvf->dev, "%s failed to disable context\n",
                        __func__);

        mutex_unlock(&mbox->lock);
}

int otx2_nix_config_bp(struct otx2_nic *pfvf, bool enable)
{
        struct nix_bp_cfg_req *req;

        if (enable)
                req = otx2_mbox_alloc_msg_nix_bp_enable(&pfvf->mbox);
        else
                req = otx2_mbox_alloc_msg_nix_bp_disable(&pfvf->mbox);

        if (!req)
                return -ENOMEM;

        req->chan_base = 0;
        req->chan_cnt = 1;
        req->bpid_per_chan = 0;

        return otx2_sync_mbox_msg(&pfvf->mbox);
}

/* Mbox message handlers */
void mbox_handler_cgx_stats(struct otx2_nic *pfvf,
                            struct cgx_stats_rsp *rsp)
{
        int id;

        for (id = 0; id < CGX_RX_STATS_COUNT; id++)
                pfvf->hw.cgx_rx_stats[id] = rsp->rx_stats[id];
        for (id = 0; id < CGX_TX_STATS_COUNT; id++)
                pfvf->hw.cgx_tx_stats[id] = rsp->tx_stats[id];
}

void mbox_handler_cgx_fec_stats(struct otx2_nic *pfvf,
                                struct cgx_fec_stats_rsp *rsp)
{
        pfvf->hw.cgx_fec_corr_blks += rsp->fec_corr_blks;
        pfvf->hw.cgx_fec_uncorr_blks += rsp->fec_uncorr_blks;
}

void mbox_handler_nix_txsch_alloc(struct otx2_nic *pf,
                                  struct nix_txsch_alloc_rsp *rsp)
{
        int lvl, schq;

        /* Setup transmit scheduler list */
        for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++)
                for (schq = 0; schq < rsp->schq[lvl]; schq++)
                        pf->hw.txschq_list[lvl][schq] =
                                rsp->schq_list[lvl][schq];
}
EXPORT_SYMBOL(mbox_handler_nix_txsch_alloc);

void mbox_handler_npa_lf_alloc(struct otx2_nic *pfvf,
                               struct npa_lf_alloc_rsp *rsp)
{
        pfvf->hw.stack_pg_ptrs = rsp->stack_pg_ptrs;
        pfvf->hw.stack_pg_bytes = rsp->stack_pg_bytes;
}
EXPORT_SYMBOL(mbox_handler_npa_lf_alloc);

void mbox_handler_nix_lf_alloc(struct otx2_nic *pfvf,
                               struct nix_lf_alloc_rsp *rsp)
{
        pfvf->hw.sqb_size = rsp->sqb_size;
        pfvf->hw.rx_chan_base = rsp->rx_chan_base;
        pfvf->hw.tx_chan_base = rsp->tx_chan_base;
        pfvf->hw.lso_tsov4_idx = rsp->lso_tsov4_idx;
        pfvf->hw.lso_tsov6_idx = rsp->lso_tsov6_idx;
        pfvf->hw.cgx_links = rsp->cgx_links;
        pfvf->hw.lbk_links = rsp->lbk_links;
        pfvf->hw.tx_link = rsp->tx_link;
}
EXPORT_SYMBOL(mbox_handler_nix_lf_alloc);

void mbox_handler_msix_offset(struct otx2_nic *pfvf,
                              struct msix_offset_rsp *rsp)
{
        pfvf->hw.npa_msixoff = rsp->npa_msixoff;
        pfvf->hw.nix_msixoff = rsp->nix_msixoff;
}
EXPORT_SYMBOL(mbox_handler_msix_offset);

void mbox_handler_nix_bp_enable(struct otx2_nic *pfvf,
                                struct nix_bp_cfg_rsp *rsp)
{
        int chan, chan_id;

        for (chan = 0; chan < rsp->chan_cnt; chan++) {
                chan_id = ((rsp->chan_bpid[chan] >> 10) & 0x7F);
                pfvf->bpid[chan_id] = rsp->chan_bpid[chan] & 0x3FF;
        }
}
EXPORT_SYMBOL(mbox_handler_nix_bp_enable);

void otx2_free_cints(struct otx2_nic *pfvf, int n)
{
        struct otx2_qset *qset = &pfvf->qset;
        struct otx2_hw *hw = &pfvf->hw;
        int irq, qidx;

        for (qidx = 0, irq = hw->nix_msixoff + NIX_LF_CINT_VEC_START;
             qidx < n;
             qidx++, irq++) {
                int vector = pci_irq_vector(pfvf->pdev, irq);

                irq_set_affinity_hint(vector, NULL);
                free_cpumask_var(hw->affinity_mask[irq]);
                free_irq(vector, &qset->napi[qidx]);
        }
}

void otx2_set_cints_affinity(struct otx2_nic *pfvf)
{
        struct otx2_hw *hw = &pfvf->hw;
        int vec, cpu, irq, cint;

        vec = hw->nix_msixoff + NIX_LF_CINT_VEC_START;
        cpu = cpumask_first(cpu_online_mask);

        /* CQ interrupts */
        for (cint = 0; cint < pfvf->hw.cint_cnt; cint++, vec++) {
                if (!alloc_cpumask_var(&hw->affinity_mask[vec], GFP_KERNEL))
                        return;

                cpumask_set_cpu(cpu, hw->affinity_mask[vec]);

                irq = pci_irq_vector(pfvf->pdev, vec);
                irq_set_affinity_hint(irq, hw->affinity_mask[vec]);

                cpu = cpumask_next(cpu, cpu_online_mask);
                if (unlikely(cpu >= nr_cpu_ids))
                        cpu = 0;
        }
}

u16 otx2_get_max_mtu(struct otx2_nic *pfvf)
{
        struct nix_hw_info *rsp;
        struct msg_req *req;
        u16 max_mtu;
        int rc;

        mutex_lock(&pfvf->mbox.lock);

        req = otx2_mbox_alloc_msg_nix_get_hw_info(&pfvf->mbox);
        if (!req) {
                rc =  -ENOMEM;
                goto out;
        }

        rc = otx2_sync_mbox_msg(&pfvf->mbox);
        if (!rc) {
                rsp = (struct nix_hw_info *)
                       otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);

                /* HW counts VLAN insertion bytes (8 for double tag)
                 * irrespective of whether SQE is requesting to insert VLAN
                 * in the packet or not. Hence these 8 bytes have to be
                 * discounted from max packet size otherwise HW will throw
                 * SMQ errors
                 */
                max_mtu = rsp->max_mtu - 8 - OTX2_ETH_HLEN;

                /* Also save DWRR MTU, needed for DWRR weight calculation */
                pfvf->hw.dwrr_mtu = rsp->rpm_dwrr_mtu;
                if (!pfvf->hw.dwrr_mtu)
                        pfvf->hw.dwrr_mtu = 1;
        }

out:
        mutex_unlock(&pfvf->mbox.lock);
        if (rc) {
                dev_warn(pfvf->dev,
                         "Failed to get MTU from hardware setting default value(1500)\n");
                max_mtu = 1500;
        }
        return max_mtu;
}
EXPORT_SYMBOL(otx2_get_max_mtu);

#define M(_name, _id, _fn_name, _req_type, _rsp_type)                   \
int __weak                                                              \
otx2_mbox_up_handler_ ## _fn_name(struct otx2_nic *pfvf,                \
                                struct _req_type *req,                  \
                                struct _rsp_type *rsp)                  \
{                                                                       \
        /* Nothing to do here */                                        \
        return 0;                                                       \
}                                                                       \
EXPORT_SYMBOL(otx2_mbox_up_handler_ ## _fn_name);
MBOX_UP_CGX_MESSAGES
#undef M