/*-
 * Copyright (c) 2007-2013 QLogic Corporation. All rights reserved.
 *
 * Eric Davis        <edavis@broadcom.com>
 * David Christensen <davidch@broadcom.com>
 * Gary Zambrano     <zambrano@broadcom.com>
 *
 * Copyright (c) 2013-2015 Brocade Communications Systems, Inc.
 * Copyright (c) 2015 QLogic Corporation.
 * All rights reserved.
 * www.qlogic.com
 *
 * See LICENSE.bnx2x_pmd for copyright and licensing details.
 */

#include "bnx2x.h"
#include "bnx2x_stats.h"

#ifdef __i386__
#define BITS_PER_LONG 32
#else
#define BITS_PER_LONG 64
#endif

static inline uint16_t
bnx2x_get_port_stats_dma_len(struct bnx2x_softc *sc)
{
	uint16_t res = 0;
	uint32_t size;

	/* 'newest' convention - shmem2 contains the size of the port stats */
	if (SHMEM2_HAS(sc, sizeof_port_stats)) {
		size = SHMEM2_RD(sc, sizeof_port_stats);
		if (size) {
			res = size;
		}

		/* prevent newer BC from causing buffer overflow */
		if (res > sizeof(struct host_port_stats)) {
			res = sizeof(struct host_port_stats);
		}
	}

	/*
	 * Older convention - all BCs support the port stats fields up until
	 * the 'not_used' field
	 */
	if (!res) {
		res = (offsetof(struct host_port_stats, not_used) + 4);

		/* if PFC stats are supported by the MFW, DMA them as well */
		if (sc->devinfo.bc_ver >= REQ_BC_VER_4_PFC_STATS_SUPPORTED) {
			res += (offsetof(struct host_port_stats, pfc_frames_rx_lo) -
				offsetof(struct host_port_stats, pfc_frames_tx_hi) + 4);
		}
	}

	res >>= 2;

	return res;
}

/*
 * Init service functions
 */

/*
 * Post the next statistics ramrod. Protect it with the lock in
 * order to ensure the strict order between statistics ramrods
 * (each ramrod has a sequence number passed in a
 * sc->fw_stats_req->hdr.drv_stats_counter and ramrods must be
 * sent in order).
 */
static void
bnx2x_storm_stats_post(struct bnx2x_softc *sc)
{
	int rc;

	if (!sc->stats_pending) {
		if (sc->stats_pending) {
			return;
		}

		sc->fw_stats_req->hdr.drv_stats_counter =
			htole16(sc->stats_counter++);

		PMD_DEBUG_PERIODIC_LOG(DEBUG,
				"sending statistics ramrod %d",
				le16toh(sc->fw_stats_req->hdr.drv_stats_counter));

		/* adjust the ramrod to include VF queues statistics */

		/* send FW stats ramrod */
		rc = bnx2x_sp_post(sc, RAMROD_CMD_ID_COMMON_STAT_QUERY, 0,
				U64_HI(sc->fw_stats_req_mapping),
				U64_LO(sc->fw_stats_req_mapping),
				NONE_CONNECTION_TYPE);
		if (rc == 0) {
			sc->stats_pending = 1;
		}
	}
}

static void
bnx2x_hw_stats_post(struct bnx2x_softc *sc)
{
	struct dmae_command *dmae = &sc->stats_dmae;
	uint32_t *stats_comp = BNX2X_SP(sc, stats_comp);
	int loader_idx;
	uint32_t opcode;

	*stats_comp = DMAE_COMP_VAL;
	if (CHIP_REV_IS_SLOW(sc)) {
		return;
	}

	/* Update MCP's statistics if possible */
	if (sc->func_stx) {
		rte_memcpy(BNX2X_SP(sc, func_stats), &sc->func_stats,
				sizeof(sc->func_stats));
	}

	/* loader */
	if (sc->executer_idx) {
		loader_idx = PMF_DMAE_C(sc);
		opcode =  bnx2x_dmae_opcode(sc, DMAE_SRC_PCI, DMAE_DST_GRC,
				TRUE, DMAE_COMP_GRC);
		opcode = bnx2x_dmae_opcode_clr_src_reset(opcode);

		memset(dmae, 0, sizeof(struct dmae_command));
		dmae->opcode = opcode;
		dmae->src_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, dmae[0]));
		dmae->src_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, dmae[0]));
		dmae->dst_addr_lo = ((DMAE_REG_CMD_MEM +
					sizeof(struct dmae_command) *
					(loader_idx + 1)) >> 2);
		dmae->dst_addr_hi = 0;
		dmae->len = sizeof(struct dmae_command) >> 2;
		dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx + 1] >> 2);
		dmae->comp_addr_hi = 0;
		dmae->comp_val = 1;

		*stats_comp = 0;
		bnx2x_post_dmae(sc, dmae, loader_idx);
	} else if (sc->func_stx) {
		*stats_comp = 0;
		bnx2x_post_dmae(sc, dmae, INIT_DMAE_C(sc));
	}
}

static int
bnx2x_stats_comp(struct bnx2x_softc *sc)
{
	uint32_t *stats_comp = BNX2X_SP(sc, stats_comp);
	int cnt = 10;

	while (*stats_comp != DMAE_COMP_VAL) {
		if (!cnt) {
			PMD_DRV_LOG(ERR, "Timeout waiting for stats finished");
			break;
		}

		cnt--;
		DELAY(1000);
	}

	return 1;
}

/*
 * Statistics service functions
 */

static void
bnx2x_stats_pmf_update(struct bnx2x_softc *sc)
{
	struct dmae_command *dmae;
	uint32_t opcode;
	int loader_idx = PMF_DMAE_C(sc);
	uint32_t *stats_comp = BNX2X_SP(sc, stats_comp);

	if (sc->devinfo.bc_ver <= 0x06001400) {
		/*
		 * Bootcode v6.0.21 fixed a GRC timeout that occurs when accessing
		 * BRB registers while the BRB block is in reset. The DMA transfer
		 * below triggers this issue resulting in the DMAE to stop
		 * functioning. Skip this initial stats transfer for old bootcode
		 * versions <= 6.0.20.
		 */
		return;
	}
	/* sanity */
	if (!sc->port.pmf || !sc->port.port_stx) {
		PMD_DRV_LOG(ERR, "BUG!");
		return;
	}

	sc->executer_idx = 0;

	opcode = bnx2x_dmae_opcode(sc, DMAE_SRC_GRC, DMAE_DST_PCI, FALSE, 0);

	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = bnx2x_dmae_opcode_add_comp(opcode, DMAE_COMP_GRC);
	dmae->src_addr_lo = (sc->port.port_stx >> 2);
	dmae->src_addr_hi = 0;
	dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, port_stats));
	dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, port_stats));
	dmae->len = DMAE_LEN32_RD_MAX;
	dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx] >> 2);
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;

	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = bnx2x_dmae_opcode_add_comp(opcode, DMAE_COMP_PCI);
	dmae->src_addr_lo = ((sc->port.port_stx >> 2) + DMAE_LEN32_RD_MAX);
	dmae->src_addr_hi = 0;
	dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, port_stats) +
			DMAE_LEN32_RD_MAX * 4);
	dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, port_stats) +
			DMAE_LEN32_RD_MAX * 4);
	dmae->len = (bnx2x_get_port_stats_dma_len(sc) - DMAE_LEN32_RD_MAX);

	dmae->comp_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, stats_comp));
	dmae->comp_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, stats_comp));
	dmae->comp_val = DMAE_COMP_VAL;

	*stats_comp = 0;
	bnx2x_hw_stats_post(sc);
	bnx2x_stats_comp(sc);
}

static void
bnx2x_port_stats_init(struct bnx2x_softc *sc)
{
    struct dmae_command *dmae;
    int port = SC_PORT(sc);
    uint32_t opcode;
    int loader_idx = PMF_DMAE_C(sc);
    uint32_t mac_addr;
    uint32_t *stats_comp = BNX2X_SP(sc, stats_comp);

    /* sanity */
    if (!sc->link_vars.link_up || !sc->port.pmf) {
	PMD_DRV_LOG(ERR, "BUG!");
	return;
    }

    sc->executer_idx = 0;

    /* MCP */
    opcode = bnx2x_dmae_opcode(sc, DMAE_SRC_PCI, DMAE_DST_GRC,
			     TRUE, DMAE_COMP_GRC);

    if (sc->port.port_stx) {
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, port_stats));
	dmae->src_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, port_stats));
	dmae->dst_addr_lo = sc->port.port_stx >> 2;
	dmae->dst_addr_hi = 0;
	dmae->len = bnx2x_get_port_stats_dma_len(sc);
	dmae->comp_addr_lo = dmae_reg_go_c[loader_idx] >> 2;
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;
    }

    if (sc->func_stx) {
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, func_stats));
	dmae->src_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, func_stats));
	dmae->dst_addr_lo = (sc->func_stx >> 2);
	dmae->dst_addr_hi = 0;
	dmae->len = (sizeof(struct host_func_stats) >> 2);
	dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx] >> 2);
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;
    }

    /* MAC */
    opcode = bnx2x_dmae_opcode(sc, DMAE_SRC_GRC, DMAE_DST_PCI,
			     TRUE, DMAE_COMP_GRC);

    /* EMAC is special */
    if (sc->link_vars.mac_type == ELINK_MAC_TYPE_EMAC) {
	mac_addr = (port ? GRCBASE_EMAC1 : GRCBASE_EMAC0);

	/* EMAC_REG_EMAC_RX_STAT_AC (EMAC_REG_EMAC_RX_STAT_AC_COUNT)*/
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_lo = (mac_addr + EMAC_REG_EMAC_RX_STAT_AC) >> 2;
	dmae->src_addr_hi = 0;
	dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, mac_stats));
	dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, mac_stats));
	dmae->len = EMAC_REG_EMAC_RX_STAT_AC_COUNT;
	dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx] >> 2);
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;

	/* EMAC_REG_EMAC_RX_STAT_AC_28 */
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_lo = ((mac_addr + EMAC_REG_EMAC_RX_STAT_AC_28) >> 2);
	dmae->src_addr_hi = 0;
	dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, mac_stats) +
				   offsetof(struct emac_stats,
					    rx_stat_falsecarriererrors));
	dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, mac_stats) +
				   offsetof(struct emac_stats,
					    rx_stat_falsecarriererrors));
	dmae->len = 1;
	dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx] >> 2);
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;

	/* EMAC_REG_EMAC_TX_STAT_AC (EMAC_REG_EMAC_TX_STAT_AC_COUNT)*/
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_lo = ((mac_addr + EMAC_REG_EMAC_TX_STAT_AC) >> 2);
	dmae->src_addr_hi = 0;
	dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, mac_stats) +
				   offsetof(struct emac_stats,
					    tx_stat_ifhcoutoctets));
	dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, mac_stats) +
				   offsetof(struct emac_stats,
					    tx_stat_ifhcoutoctets));
	dmae->len = EMAC_REG_EMAC_TX_STAT_AC_COUNT;
	dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx] >> 2);
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;
    } else {
	uint32_t tx_src_addr_lo, rx_src_addr_lo;
	uint16_t rx_len, tx_len;

	/* configure the params according to MAC type */
	switch (sc->link_vars.mac_type) {
	case ELINK_MAC_TYPE_BMAC:
	    mac_addr = (port) ? NIG_REG_INGRESS_BMAC1_MEM :
				NIG_REG_INGRESS_BMAC0_MEM;

	    /* BIGMAC_REGISTER_TX_STAT_GTPKT ..
	       BIGMAC_REGISTER_TX_STAT_GTBYT */
	    if (CHIP_IS_E1x(sc)) {
		tx_src_addr_lo =
		    ((mac_addr + BIGMAC_REGISTER_TX_STAT_GTPKT) >> 2);
		tx_len = ((8 + BIGMAC_REGISTER_TX_STAT_GTBYT -
			   BIGMAC_REGISTER_TX_STAT_GTPKT) >> 2);
		rx_src_addr_lo =
		    ((mac_addr + BIGMAC_REGISTER_RX_STAT_GR64) >> 2);
		rx_len = ((8 + BIGMAC_REGISTER_RX_STAT_GRIPJ -
			   BIGMAC_REGISTER_RX_STAT_GR64) >> 2);
	    } else {
		tx_src_addr_lo =
		    ((mac_addr + BIGMAC2_REGISTER_TX_STAT_GTPOK) >> 2);
		tx_len = ((8 + BIGMAC2_REGISTER_TX_STAT_GTBYT -
			   BIGMAC2_REGISTER_TX_STAT_GTPOK) >> 2);
		rx_src_addr_lo =
		    ((mac_addr + BIGMAC2_REGISTER_RX_STAT_GR64) >> 2);
		rx_len = ((8 + BIGMAC2_REGISTER_RX_STAT_GRIPJ -
			   BIGMAC2_REGISTER_RX_STAT_GR64) >> 2);
	    }

	    break;

	case ELINK_MAC_TYPE_UMAC: /* handled by MSTAT */
	case ELINK_MAC_TYPE_XMAC: /* handled by MSTAT */
	default:
	    mac_addr = (port) ? GRCBASE_MSTAT1 : GRCBASE_MSTAT0;
	    tx_src_addr_lo = ((mac_addr + MSTAT_REG_TX_STAT_GTXPOK_LO) >> 2);
	    rx_src_addr_lo = ((mac_addr + MSTAT_REG_RX_STAT_GR64_LO) >> 2);
	    tx_len =
		(sizeof(sc->sp->mac_stats.mstat_stats.stats_tx) >> 2);
	    rx_len =
		(sizeof(sc->sp->mac_stats.mstat_stats.stats_rx) >> 2);
	    break;
	}

	/* TX stats */
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_lo = tx_src_addr_lo;
	dmae->src_addr_hi = 0;
	dmae->len = tx_len;
	dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, mac_stats));
	dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, mac_stats));
	dmae->comp_addr_lo = dmae_reg_go_c[loader_idx] >> 2;
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;

	/* RX stats */
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_hi = 0;
	dmae->src_addr_lo = rx_src_addr_lo;
	dmae->dst_addr_lo =
	    U64_LO(BNX2X_SP_MAPPING(sc, mac_stats) + (tx_len << 2));
	dmae->dst_addr_hi =
	    U64_HI(BNX2X_SP_MAPPING(sc, mac_stats) + (tx_len << 2));
	dmae->len = rx_len;
	dmae->comp_addr_lo = dmae_reg_go_c[loader_idx] >> 2;
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;
    }

    /* NIG */
    if (!CHIP_IS_E3(sc)) {
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_lo =
	    (port ? NIG_REG_STAT1_EGRESS_MAC_PKT0 :
		    NIG_REG_STAT0_EGRESS_MAC_PKT0) >> 2;
	dmae->src_addr_hi = 0;
	dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, nig_stats) +
				   offsetof(struct nig_stats,
					    egress_mac_pkt0_lo));
	dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, nig_stats) +
				   offsetof(struct nig_stats,
					    egress_mac_pkt0_lo));
	dmae->len = ((2 * sizeof(uint32_t)) >> 2);
	dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx] >> 2);
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;

	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = opcode;
	dmae->src_addr_lo =
	    (port ? NIG_REG_STAT1_EGRESS_MAC_PKT1 :
		    NIG_REG_STAT0_EGRESS_MAC_PKT1) >> 2;
	dmae->src_addr_hi = 0;
	dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, nig_stats) +
				   offsetof(struct nig_stats,
					    egress_mac_pkt1_lo));
	dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, nig_stats) +
				   offsetof(struct nig_stats,
					    egress_mac_pkt1_lo));
	dmae->len = ((2 * sizeof(uint32_t)) >> 2);
	dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx] >> 2);
	dmae->comp_addr_hi = 0;
	dmae->comp_val = 1;
    }

    dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
    dmae->opcode = bnx2x_dmae_opcode(sc, DMAE_SRC_GRC, DMAE_DST_PCI,
				   TRUE, DMAE_COMP_PCI);
    dmae->src_addr_lo =
	(port ? NIG_REG_STAT1_BRB_DISCARD :
		NIG_REG_STAT0_BRB_DISCARD) >> 2;
    dmae->src_addr_hi = 0;
    dmae->dst_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, nig_stats));
    dmae->dst_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, nig_stats));
    dmae->len = (sizeof(struct nig_stats) - 4*sizeof(uint32_t)) >> 2;

    dmae->comp_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, stats_comp));
    dmae->comp_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, stats_comp));
    dmae->comp_val = DMAE_COMP_VAL;

    *stats_comp = 0;
}

static void
bnx2x_func_stats_init(struct bnx2x_softc *sc)
{
    struct dmae_command *dmae = &sc->stats_dmae;
    uint32_t *stats_comp = BNX2X_SP(sc, stats_comp);

    /* sanity */
    if (!sc->func_stx) {
	PMD_DRV_LOG(ERR, "BUG!");
	return;
    }

    sc->executer_idx = 0;
    memset(dmae, 0, sizeof(struct dmae_command));

    dmae->opcode = bnx2x_dmae_opcode(sc, DMAE_SRC_PCI, DMAE_DST_GRC,
				   TRUE, DMAE_COMP_PCI);
    dmae->src_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, func_stats));
    dmae->src_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, func_stats));
    dmae->dst_addr_lo = (sc->func_stx >> 2);
    dmae->dst_addr_hi = 0;
    dmae->len = (sizeof(struct host_func_stats) >> 2);
    dmae->comp_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, stats_comp));
    dmae->comp_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, stats_comp));
    dmae->comp_val = DMAE_COMP_VAL;

    *stats_comp = 0;
}

static void
bnx2x_stats_start(struct bnx2x_softc *sc)
{
    /*
     * VFs travel through here as part of the statistics FSM, but no action
     * is required
     */
    if (IS_VF(sc)) {
	return;
    }

    if (sc->port.pmf) {
	bnx2x_port_stats_init(sc);
    }

    else if (sc->func_stx) {
	bnx2x_func_stats_init(sc);
    }

    bnx2x_hw_stats_post(sc);
    bnx2x_storm_stats_post(sc);
}

static void
bnx2x_stats_pmf_start(struct bnx2x_softc *sc)
{
    bnx2x_stats_comp(sc);
    bnx2x_stats_pmf_update(sc);
    bnx2x_stats_start(sc);
}

static void
bnx2x_stats_restart(struct bnx2x_softc *sc)
{
    /*
     * VFs travel through here as part of the statistics FSM, but no action
     * is required
     */
    if (IS_VF(sc)) {
	return;
    }

    bnx2x_stats_comp(sc);
    bnx2x_stats_start(sc);
}

static void
bnx2x_bmac_stats_update(struct bnx2x_softc *sc)
{
    struct host_port_stats *pstats = BNX2X_SP(sc, port_stats);
    struct bnx2x_eth_stats *estats = &sc->eth_stats;
    struct {
	uint32_t lo;
	uint32_t hi;
    } diff;

    if (CHIP_IS_E1x(sc)) {
	struct bmac1_stats *new = BNX2X_SP(sc, mac_stats.bmac1_stats);

	/* the macros below will use "bmac1_stats" type */
	UPDATE_STAT64(rx_stat_grerb, rx_stat_ifhcinbadoctets);
	UPDATE_STAT64(rx_stat_grfcs, rx_stat_dot3statsfcserrors);
	UPDATE_STAT64(rx_stat_grund, rx_stat_etherstatsundersizepkts);
	UPDATE_STAT64(rx_stat_grovr, rx_stat_dot3statsframestoolong);
	UPDATE_STAT64(rx_stat_grfrg, rx_stat_etherstatsfragments);
	UPDATE_STAT64(rx_stat_grjbr, rx_stat_etherstatsjabbers);
	UPDATE_STAT64(rx_stat_grxcf, rx_stat_maccontrolframesreceived);
	UPDATE_STAT64(rx_stat_grxpf, rx_stat_xoffstateentered);
	UPDATE_STAT64(rx_stat_grxpf, rx_stat_mac_xpf);

	UPDATE_STAT64(tx_stat_gtxpf, tx_stat_outxoffsent);
	UPDATE_STAT64(tx_stat_gtxpf, tx_stat_flowcontroldone);
	UPDATE_STAT64(tx_stat_gt64, tx_stat_etherstatspkts64octets);
	UPDATE_STAT64(tx_stat_gt127,
		      tx_stat_etherstatspkts65octetsto127octets);
	UPDATE_STAT64(tx_stat_gt255,
		      tx_stat_etherstatspkts128octetsto255octets);
	UPDATE_STAT64(tx_stat_gt511,
		      tx_stat_etherstatspkts256octetsto511octets);
	UPDATE_STAT64(tx_stat_gt1023,
		      tx_stat_etherstatspkts512octetsto1023octets);
	UPDATE_STAT64(tx_stat_gt1518,
		      tx_stat_etherstatspkts1024octetsto1522octets);
	UPDATE_STAT64(tx_stat_gt2047, tx_stat_mac_2047);
	UPDATE_STAT64(tx_stat_gt4095, tx_stat_mac_4095);
	UPDATE_STAT64(tx_stat_gt9216, tx_stat_mac_9216);
	UPDATE_STAT64(tx_stat_gt16383, tx_stat_mac_16383);
	UPDATE_STAT64(tx_stat_gterr,
		      tx_stat_dot3statsinternalmactransmiterrors);
	UPDATE_STAT64(tx_stat_gtufl, tx_stat_mac_ufl);
    } else {
	struct bmac2_stats *new = BNX2X_SP(sc, mac_stats.bmac2_stats);
	struct bnx2x_fw_port_stats_old *fwstats = &sc->fw_stats_old;

	/* the macros below will use "bmac2_stats" type */
	UPDATE_STAT64(rx_stat_grerb, rx_stat_ifhcinbadoctets);
	UPDATE_STAT64(rx_stat_grfcs, rx_stat_dot3statsfcserrors);
	UPDATE_STAT64(rx_stat_grund, rx_stat_etherstatsundersizepkts);
	UPDATE_STAT64(rx_stat_grovr, rx_stat_dot3statsframestoolong);
	UPDATE_STAT64(rx_stat_grfrg, rx_stat_etherstatsfragments);
	UPDATE_STAT64(rx_stat_grjbr, rx_stat_etherstatsjabbers);
	UPDATE_STAT64(rx_stat_grxcf, rx_stat_maccontrolframesreceived);
	UPDATE_STAT64(rx_stat_grxpf, rx_stat_xoffstateentered);
	UPDATE_STAT64(rx_stat_grxpf, rx_stat_mac_xpf);
	UPDATE_STAT64(tx_stat_gtxpf, tx_stat_outxoffsent);
	UPDATE_STAT64(tx_stat_gtxpf, tx_stat_flowcontroldone);
	UPDATE_STAT64(tx_stat_gt64, tx_stat_etherstatspkts64octets);
	UPDATE_STAT64(tx_stat_gt127,
		      tx_stat_etherstatspkts65octetsto127octets);
	UPDATE_STAT64(tx_stat_gt255,
		      tx_stat_etherstatspkts128octetsto255octets);
	UPDATE_STAT64(tx_stat_gt511,
		      tx_stat_etherstatspkts256octetsto511octets);
	UPDATE_STAT64(tx_stat_gt1023,
		      tx_stat_etherstatspkts512octetsto1023octets);
	UPDATE_STAT64(tx_stat_gt1518,
		      tx_stat_etherstatspkts1024octetsto1522octets);
	UPDATE_STAT64(tx_stat_gt2047, tx_stat_mac_2047);
	UPDATE_STAT64(tx_stat_gt4095, tx_stat_mac_4095);
	UPDATE_STAT64(tx_stat_gt9216, tx_stat_mac_9216);
	UPDATE_STAT64(tx_stat_gt16383, tx_stat_mac_16383);
	UPDATE_STAT64(tx_stat_gterr,
		      tx_stat_dot3statsinternalmactransmiterrors);
	UPDATE_STAT64(tx_stat_gtufl, tx_stat_mac_ufl);

	/* collect PFC stats */
	pstats->pfc_frames_tx_hi = new->tx_stat_gtpp_hi;
	pstats->pfc_frames_tx_lo = new->tx_stat_gtpp_lo;
	ADD_64(pstats->pfc_frames_tx_hi, fwstats->pfc_frames_tx_hi,
	       pstats->pfc_frames_tx_lo, fwstats->pfc_frames_tx_lo);

	pstats->pfc_frames_rx_hi = new->rx_stat_grpp_hi;
	pstats->pfc_frames_rx_lo = new->rx_stat_grpp_lo;
	ADD_64(pstats->pfc_frames_rx_hi, fwstats->pfc_frames_rx_hi,
	       pstats->pfc_frames_rx_lo, fwstats->pfc_frames_rx_lo);
    }

    estats->pause_frames_received_hi = pstats->mac_stx[1].rx_stat_mac_xpf_hi;
    estats->pause_frames_received_lo = pstats->mac_stx[1].rx_stat_mac_xpf_lo;

    estats->pause_frames_sent_hi = pstats->mac_stx[1].tx_stat_outxoffsent_hi;
    estats->pause_frames_sent_lo = pstats->mac_stx[1].tx_stat_outxoffsent_lo;

    estats->pfc_frames_received_hi = pstats->pfc_frames_rx_hi;
    estats->pfc_frames_received_lo = pstats->pfc_frames_rx_lo;
    estats->pfc_frames_sent_hi = pstats->pfc_frames_tx_hi;
    estats->pfc_frames_sent_lo = pstats->pfc_frames_tx_lo;
}

static void
bnx2x_mstat_stats_update(struct bnx2x_softc *sc)
{
    struct host_port_stats *pstats = BNX2X_SP(sc, port_stats);
    struct bnx2x_eth_stats *estats = &sc->eth_stats;
    struct mstat_stats *new = BNX2X_SP(sc, mac_stats.mstat_stats);

    ADD_STAT64(stats_rx.rx_grerb, rx_stat_ifhcinbadoctets);
    ADD_STAT64(stats_rx.rx_grfcs, rx_stat_dot3statsfcserrors);
    ADD_STAT64(stats_rx.rx_grund, rx_stat_etherstatsundersizepkts);
    ADD_STAT64(stats_rx.rx_grovr, rx_stat_dot3statsframestoolong);
    ADD_STAT64(stats_rx.rx_grfrg, rx_stat_etherstatsfragments);
    ADD_STAT64(stats_rx.rx_grxcf, rx_stat_maccontrolframesreceived);
    ADD_STAT64(stats_rx.rx_grxpf, rx_stat_xoffstateentered);
    ADD_STAT64(stats_rx.rx_grxpf, rx_stat_mac_xpf);
    ADD_STAT64(stats_tx.tx_gtxpf, tx_stat_outxoffsent);
    ADD_STAT64(stats_tx.tx_gtxpf, tx_stat_flowcontroldone);

    /* collect pfc stats */
    ADD_64(pstats->pfc_frames_tx_hi, new->stats_tx.tx_gtxpp_hi,
	   pstats->pfc_frames_tx_lo, new->stats_tx.tx_gtxpp_lo);
    ADD_64(pstats->pfc_frames_rx_hi, new->stats_rx.rx_grxpp_hi,
	   pstats->pfc_frames_rx_lo, new->stats_rx.rx_grxpp_lo);

    ADD_STAT64(stats_tx.tx_gt64, tx_stat_etherstatspkts64octets);
    ADD_STAT64(stats_tx.tx_gt127, tx_stat_etherstatspkts65octetsto127octets);
    ADD_STAT64(stats_tx.tx_gt255, tx_stat_etherstatspkts128octetsto255octets);
    ADD_STAT64(stats_tx.tx_gt511, tx_stat_etherstatspkts256octetsto511octets);
    ADD_STAT64(stats_tx.tx_gt1023,
	       tx_stat_etherstatspkts512octetsto1023octets);
    ADD_STAT64(stats_tx.tx_gt1518,
	       tx_stat_etherstatspkts1024octetsto1522octets);
    ADD_STAT64(stats_tx.tx_gt2047, tx_stat_mac_2047);

    ADD_STAT64(stats_tx.tx_gt4095, tx_stat_mac_4095);
    ADD_STAT64(stats_tx.tx_gt9216, tx_stat_mac_9216);
    ADD_STAT64(stats_tx.tx_gt16383, tx_stat_mac_16383);

    ADD_STAT64(stats_tx.tx_gterr, tx_stat_dot3statsinternalmactransmiterrors);
    ADD_STAT64(stats_tx.tx_gtufl, tx_stat_mac_ufl);

    estats->etherstatspkts1024octetsto1522octets_hi =
	pstats->mac_stx[1].tx_stat_etherstatspkts1024octetsto1522octets_hi;
    estats->etherstatspkts1024octetsto1522octets_lo =
	pstats->mac_stx[1].tx_stat_etherstatspkts1024octetsto1522octets_lo;

    estats->etherstatspktsover1522octets_hi =
	pstats->mac_stx[1].tx_stat_mac_2047_hi;
    estats->etherstatspktsover1522octets_lo =
	pstats->mac_stx[1].tx_stat_mac_2047_lo;

    ADD_64(estats->etherstatspktsover1522octets_hi,
	   pstats->mac_stx[1].tx_stat_mac_4095_hi,
	   estats->etherstatspktsover1522octets_lo,
	   pstats->mac_stx[1].tx_stat_mac_4095_lo);

    ADD_64(estats->etherstatspktsover1522octets_hi,
	   pstats->mac_stx[1].tx_stat_mac_9216_hi,
	   estats->etherstatspktsover1522octets_lo,
	   pstats->mac_stx[1].tx_stat_mac_9216_lo);

    ADD_64(estats->etherstatspktsover1522octets_hi,
	   pstats->mac_stx[1].tx_stat_mac_16383_hi,
	   estats->etherstatspktsover1522octets_lo,
	   pstats->mac_stx[1].tx_stat_mac_16383_lo);

    estats->pause_frames_received_hi = pstats->mac_stx[1].rx_stat_mac_xpf_hi;
    estats->pause_frames_received_lo = pstats->mac_stx[1].rx_stat_mac_xpf_lo;

    estats->pause_frames_sent_hi = pstats->mac_stx[1].tx_stat_outxoffsent_hi;
    estats->pause_frames_sent_lo = pstats->mac_stx[1].tx_stat_outxoffsent_lo;

    estats->pfc_frames_received_hi = pstats->pfc_frames_rx_hi;
    estats->pfc_frames_received_lo = pstats->pfc_frames_rx_lo;
    estats->pfc_frames_sent_hi = pstats->pfc_frames_tx_hi;
    estats->pfc_frames_sent_lo = pstats->pfc_frames_tx_lo;
}

static void
bnx2x_emac_stats_update(struct bnx2x_softc *sc)
{
    struct emac_stats *new = BNX2X_SP(sc, mac_stats.emac_stats);
    struct host_port_stats *pstats = BNX2X_SP(sc, port_stats);
    struct bnx2x_eth_stats *estats = &sc->eth_stats;

    UPDATE_EXTEND_STAT(rx_stat_ifhcinbadoctets);
    UPDATE_EXTEND_STAT(tx_stat_ifhcoutbadoctets);
    UPDATE_EXTEND_STAT(rx_stat_dot3statsfcserrors);
    UPDATE_EXTEND_STAT(rx_stat_dot3statsalignmenterrors);
    UPDATE_EXTEND_STAT(rx_stat_dot3statscarriersenseerrors);
    UPDATE_EXTEND_STAT(rx_stat_falsecarriererrors);
    UPDATE_EXTEND_STAT(rx_stat_etherstatsundersizepkts);
    UPDATE_EXTEND_STAT(rx_stat_dot3statsframestoolong);
    UPDATE_EXTEND_STAT(rx_stat_etherstatsfragments);
    UPDATE_EXTEND_STAT(rx_stat_etherstatsjabbers);
    UPDATE_EXTEND_STAT(rx_stat_maccontrolframesreceived);
    UPDATE_EXTEND_STAT(rx_stat_xoffstateentered);
    UPDATE_EXTEND_STAT(rx_stat_xonpauseframesreceived);
    UPDATE_EXTEND_STAT(rx_stat_xoffpauseframesreceived);
    UPDATE_EXTEND_STAT(tx_stat_outxonsent);
    UPDATE_EXTEND_STAT(tx_stat_outxoffsent);
    UPDATE_EXTEND_STAT(tx_stat_flowcontroldone);
    UPDATE_EXTEND_STAT(tx_stat_etherstatscollisions);
    UPDATE_EXTEND_STAT(tx_stat_dot3statssinglecollisionframes);
    UPDATE_EXTEND_STAT(tx_stat_dot3statsmultiplecollisionframes);
    UPDATE_EXTEND_STAT(tx_stat_dot3statsdeferredtransmissions);
    UPDATE_EXTEND_STAT(tx_stat_dot3statsexcessivecollisions);
    UPDATE_EXTEND_STAT(tx_stat_dot3statslatecollisions);
    UPDATE_EXTEND_STAT(tx_stat_etherstatspkts64octets);
    UPDATE_EXTEND_STAT(tx_stat_etherstatspkts65octetsto127octets);
    UPDATE_EXTEND_STAT(tx_stat_etherstatspkts128octetsto255octets);
    UPDATE_EXTEND_STAT(tx_stat_etherstatspkts256octetsto511octets);
    UPDATE_EXTEND_STAT(tx_stat_etherstatspkts512octetsto1023octets);
    UPDATE_EXTEND_STAT(tx_stat_etherstatspkts1024octetsto1522octets);
    UPDATE_EXTEND_STAT(tx_stat_etherstatspktsover1522octets);
    UPDATE_EXTEND_STAT(tx_stat_dot3statsinternalmactransmiterrors);

    estats->pause_frames_received_hi =
	pstats->mac_stx[1].rx_stat_xonpauseframesreceived_hi;
    estats->pause_frames_received_lo =
	pstats->mac_stx[1].rx_stat_xonpauseframesreceived_lo;
    ADD_64(estats->pause_frames_received_hi,
	   pstats->mac_stx[1].rx_stat_xoffpauseframesreceived_hi,
	   estats->pause_frames_received_lo,
	   pstats->mac_stx[1].rx_stat_xoffpauseframesreceived_lo);

    estats->pause_frames_sent_hi =
	pstats->mac_stx[1].tx_stat_outxonsent_hi;
    estats->pause_frames_sent_lo =
	pstats->mac_stx[1].tx_stat_outxonsent_lo;
    ADD_64(estats->pause_frames_sent_hi,
	   pstats->mac_stx[1].tx_stat_outxoffsent_hi,
	   estats->pause_frames_sent_lo,
	   pstats->mac_stx[1].tx_stat_outxoffsent_lo);
}

static int
bnx2x_hw_stats_update(struct bnx2x_softc *sc)
{
    struct nig_stats *new = BNX2X_SP(sc, nig_stats);
    struct nig_stats *old = &(sc->port.old_nig_stats);
    struct host_port_stats *pstats = BNX2X_SP(sc, port_stats);
    struct bnx2x_eth_stats *estats = &sc->eth_stats;
    uint32_t lpi_reg, nig_timer_max;
    struct {
	uint32_t lo;
	uint32_t hi;
    } diff;

    switch (sc->link_vars.mac_type) {
    case ELINK_MAC_TYPE_BMAC:
	bnx2x_bmac_stats_update(sc);
	break;

    case ELINK_MAC_TYPE_EMAC:
	bnx2x_emac_stats_update(sc);
	break;

    case ELINK_MAC_TYPE_UMAC:
    case ELINK_MAC_TYPE_XMAC:
	bnx2x_mstat_stats_update(sc);
	break;

    case ELINK_MAC_TYPE_NONE: /* unreached */
	PMD_DRV_LOG(DEBUG,
	      "stats updated by DMAE but no MAC active");
	return -1;

    default: /* unreached */
	PMD_DRV_LOG(ERR, "stats update failed, unknown MAC type");
    }

    ADD_EXTEND_64(pstats->brb_drop_hi, pstats->brb_drop_lo,
		  new->brb_discard - old->brb_discard);
    ADD_EXTEND_64(estats->brb_truncate_hi, estats->brb_truncate_lo,
		  new->brb_truncate - old->brb_truncate);

    if (!CHIP_IS_E3(sc)) {
	UPDATE_STAT64_NIG(egress_mac_pkt0,
			  etherstatspkts1024octetsto1522octets);
	UPDATE_STAT64_NIG(egress_mac_pkt1,
			  etherstatspktsover1522octets);
    }

    rte_memcpy(old, new, sizeof(struct nig_stats));

    rte_memcpy(&(estats->rx_stat_ifhcinbadoctets_hi), &(pstats->mac_stx[1]),
	   sizeof(struct mac_stx));
    estats->brb_drop_hi = pstats->brb_drop_hi;
    estats->brb_drop_lo = pstats->brb_drop_lo;

    pstats->host_port_stats_counter++;

    if (CHIP_IS_E3(sc)) {
	lpi_reg = (SC_PORT(sc)) ?
		      MISC_REG_CPMU_LP_SM_ENT_CNT_P1 :
		      MISC_REG_CPMU_LP_SM_ENT_CNT_P0;
	estats->eee_tx_lpi += REG_RD(sc, lpi_reg);
    }

    if (!BNX2X_NOMCP(sc)) {
	nig_timer_max = SHMEM_RD(sc, port_mb[SC_PORT(sc)].stat_nig_timer);
	if (nig_timer_max != estats->nig_timer_max) {
	    estats->nig_timer_max = nig_timer_max;
	    PMD_DRV_LOG(ERR, "invalid NIG timer max (%u)",
		  estats->nig_timer_max);
	}
    }

    return 0;
}

static int
bnx2x_storm_stats_validate_counters(struct bnx2x_softc *sc)
{
    struct stats_counter *counters = &sc->fw_stats_data->storm_counters;
    uint16_t cur_stats_counter;

    /*
     * Make sure we use the value of the counter
     * used for sending the last stats ramrod.
     */
    cur_stats_counter = (sc->stats_counter - 1);

    /* are storm stats valid? */
    if (le16toh(counters->xstats_counter) != cur_stats_counter) {
	PMD_DRV_LOG(DEBUG,
	      "stats not updated by xstorm, "
	      "counter 0x%x != stats_counter 0x%x",
	      le16toh(counters->xstats_counter), sc->stats_counter);
	return -EAGAIN;
    }

    if (le16toh(counters->ustats_counter) != cur_stats_counter) {
	PMD_DRV_LOG(DEBUG,
	      "stats not updated by ustorm, "
	      "counter 0x%x != stats_counter 0x%x",
	      le16toh(counters->ustats_counter), sc->stats_counter);
	return -EAGAIN;
    }

    if (le16toh(counters->cstats_counter) != cur_stats_counter) {
	PMD_DRV_LOG(DEBUG,
	      "stats not updated by cstorm, "
	      "counter 0x%x != stats_counter 0x%x",
	      le16toh(counters->cstats_counter), sc->stats_counter);
	return -EAGAIN;
    }

    if (le16toh(counters->tstats_counter) != cur_stats_counter) {
	PMD_DRV_LOG(DEBUG,
	      "stats not updated by tstorm, "
	      "counter 0x%x != stats_counter 0x%x",
	      le16toh(counters->tstats_counter), sc->stats_counter);
	return -EAGAIN;
    }

    return 0;
}

static int
bnx2x_storm_stats_update(struct bnx2x_softc *sc)
{
	struct tstorm_per_port_stats *tport =
		&sc->fw_stats_data->port.tstorm_port_statistics;
	struct tstorm_per_pf_stats *tfunc =
		&sc->fw_stats_data->pf.tstorm_pf_statistics;
	struct host_func_stats *fstats = &sc->func_stats;
	struct bnx2x_eth_stats *estats = &sc->eth_stats;
	struct bnx2x_eth_stats_old *estats_old = &sc->eth_stats_old;
	int i;

	/* vfs stat counter is managed by pf */
	if (IS_PF(sc) && bnx2x_storm_stats_validate_counters(sc)) {
		return -EAGAIN;
	}

	estats->error_bytes_received_hi = 0;
	estats->error_bytes_received_lo = 0;

	for (i = 0; i < sc->num_queues; i++) {
		struct bnx2x_fastpath *fp = &sc->fp[i];
		struct tstorm_per_queue_stats *tclient =
			&sc->fw_stats_data->queue_stats[i].tstorm_queue_statistics;
		struct tstorm_per_queue_stats *old_tclient = &fp->old_tclient;
		struct ustorm_per_queue_stats *uclient =
			&sc->fw_stats_data->queue_stats[i].ustorm_queue_statistics;
		struct ustorm_per_queue_stats *old_uclient = &fp->old_uclient;
		struct xstorm_per_queue_stats *xclient =
			&sc->fw_stats_data->queue_stats[i].xstorm_queue_statistics;
		struct xstorm_per_queue_stats *old_xclient = &fp->old_xclient;
		struct bnx2x_eth_q_stats *qstats = &fp->eth_q_stats;
		struct bnx2x_eth_q_stats_old *qstats_old = &fp->eth_q_stats_old;

		uint32_t diff;

		/* PMD_DRV_LOG(DEBUG,
				"queue[%d]: ucast_sent 0x%x bcast_sent 0x%x mcast_sent 0x%x",
				i, xclient->ucast_pkts_sent, xclient->bcast_pkts_sent,
				xclient->mcast_pkts_sent);

		PMD_DRV_LOG(DEBUG, "---------------"); */

		UPDATE_QSTAT(tclient->rcv_bcast_bytes,
				total_broadcast_bytes_received);
		UPDATE_QSTAT(tclient->rcv_mcast_bytes,
				total_multicast_bytes_received);
		UPDATE_QSTAT(tclient->rcv_ucast_bytes,
				total_unicast_bytes_received);

		/*
		 * sum to total_bytes_received all
		 * unicast/multicast/broadcast
		 */
		qstats->total_bytes_received_hi =
			qstats->total_broadcast_bytes_received_hi;
		qstats->total_bytes_received_lo =
			qstats->total_broadcast_bytes_received_lo;

		ADD_64(qstats->total_bytes_received_hi,
				qstats->total_multicast_bytes_received_hi,
				qstats->total_bytes_received_lo,
				qstats->total_multicast_bytes_received_lo);

		ADD_64(qstats->total_bytes_received_hi,
				qstats->total_unicast_bytes_received_hi,
				qstats->total_bytes_received_lo,
				qstats->total_unicast_bytes_received_lo);

		qstats->valid_bytes_received_hi = qstats->total_bytes_received_hi;
		qstats->valid_bytes_received_lo = qstats->total_bytes_received_lo;

		UPDATE_EXTEND_TSTAT(rcv_ucast_pkts, total_unicast_packets_received);
		UPDATE_EXTEND_TSTAT(rcv_mcast_pkts, total_multicast_packets_received);
		UPDATE_EXTEND_TSTAT(rcv_bcast_pkts, total_broadcast_packets_received);
		UPDATE_EXTEND_E_TSTAT(pkts_too_big_discard,
				etherstatsoverrsizepkts, 32);
		UPDATE_EXTEND_E_TSTAT(no_buff_discard, no_buff_discard, 16);

		SUB_EXTEND_USTAT(ucast_no_buff_pkts, total_unicast_packets_received);
		SUB_EXTEND_USTAT(mcast_no_buff_pkts,
				total_multicast_packets_received);
		SUB_EXTEND_USTAT(bcast_no_buff_pkts,
				total_broadcast_packets_received);
		UPDATE_EXTEND_E_USTAT(ucast_no_buff_pkts, no_buff_discard);
		UPDATE_EXTEND_E_USTAT(mcast_no_buff_pkts, no_buff_discard);
		UPDATE_EXTEND_E_USTAT(bcast_no_buff_pkts, no_buff_discard);

		UPDATE_QSTAT(xclient->bcast_bytes_sent,
				total_broadcast_bytes_transmitted);
		UPDATE_QSTAT(xclient->mcast_bytes_sent,
				total_multicast_bytes_transmitted);
		UPDATE_QSTAT(xclient->ucast_bytes_sent,
				total_unicast_bytes_transmitted);

		/*
		 * sum to total_bytes_transmitted all
		 * unicast/multicast/broadcast
		 */
		qstats->total_bytes_transmitted_hi =
			qstats->total_unicast_bytes_transmitted_hi;
		qstats->total_bytes_transmitted_lo =
			qstats->total_unicast_bytes_transmitted_lo;

		ADD_64(qstats->total_bytes_transmitted_hi,
				qstats->total_broadcast_bytes_transmitted_hi,
				qstats->total_bytes_transmitted_lo,
				qstats->total_broadcast_bytes_transmitted_lo);

		ADD_64(qstats->total_bytes_transmitted_hi,
				qstats->total_multicast_bytes_transmitted_hi,
				qstats->total_bytes_transmitted_lo,
				qstats->total_multicast_bytes_transmitted_lo);

		UPDATE_EXTEND_XSTAT(ucast_pkts_sent,
				total_unicast_packets_transmitted);
		UPDATE_EXTEND_XSTAT(mcast_pkts_sent,
				total_multicast_packets_transmitted);
		UPDATE_EXTEND_XSTAT(bcast_pkts_sent,
				total_broadcast_packets_transmitted);

		UPDATE_EXTEND_TSTAT(checksum_discard,
				total_packets_received_checksum_discarded);
		UPDATE_EXTEND_TSTAT(ttl0_discard,
				total_packets_received_ttl0_discarded);

		UPDATE_EXTEND_XSTAT(error_drop_pkts,
				total_transmitted_dropped_packets_error);

		UPDATE_FSTAT_QSTAT(total_bytes_received);
		UPDATE_FSTAT_QSTAT(total_bytes_transmitted);
		UPDATE_FSTAT_QSTAT(total_unicast_packets_received);
		UPDATE_FSTAT_QSTAT(total_multicast_packets_received);
		UPDATE_FSTAT_QSTAT(total_broadcast_packets_received);
		UPDATE_FSTAT_QSTAT(total_unicast_packets_transmitted);
		UPDATE_FSTAT_QSTAT(total_multicast_packets_transmitted);
		UPDATE_FSTAT_QSTAT(total_broadcast_packets_transmitted);
		UPDATE_FSTAT_QSTAT(valid_bytes_received);
	}

	ADD_64(estats->total_bytes_received_hi,
			estats->rx_stat_ifhcinbadoctets_hi,
			estats->total_bytes_received_lo,
			estats->rx_stat_ifhcinbadoctets_lo);

	ADD_64_LE(estats->total_bytes_received_hi,
			tfunc->rcv_error_bytes.hi,
			estats->total_bytes_received_lo,
			tfunc->rcv_error_bytes.lo);

	ADD_64_LE(estats->error_bytes_received_hi,
			tfunc->rcv_error_bytes.hi,
			estats->error_bytes_received_lo,
			tfunc->rcv_error_bytes.lo);

	UPDATE_ESTAT(etherstatsoverrsizepkts, rx_stat_dot3statsframestoolong);

	ADD_64(estats->error_bytes_received_hi,
			estats->rx_stat_ifhcinbadoctets_hi,
			estats->error_bytes_received_lo,
			estats->rx_stat_ifhcinbadoctets_lo);

	if (sc->port.pmf) {
		struct bnx2x_fw_port_stats_old *fwstats = &sc->fw_stats_old;
		UPDATE_FW_STAT(mac_filter_discard);
		UPDATE_FW_STAT(mf_tag_discard);
		UPDATE_FW_STAT(brb_truncate_discard);
		UPDATE_FW_STAT(mac_discard);
	}

	fstats->host_func_stats_start = ++fstats->host_func_stats_end;

	sc->stats_pending = 0;

	return 0;
}

static void
bnx2x_drv_stats_update(struct bnx2x_softc *sc)
{
    struct bnx2x_eth_stats *estats = &sc->eth_stats;
    int i;

    for (i = 0; i < sc->num_queues; i++) {
	struct bnx2x_eth_q_stats *qstats = &sc->fp[i].eth_q_stats;
	struct bnx2x_eth_q_stats_old *qstats_old = &sc->fp[i].eth_q_stats_old;

	UPDATE_ESTAT_QSTAT(rx_calls);
	UPDATE_ESTAT_QSTAT(rx_pkts);
	UPDATE_ESTAT_QSTAT(rx_soft_errors);
	UPDATE_ESTAT_QSTAT(rx_hw_csum_errors);
	UPDATE_ESTAT_QSTAT(rx_ofld_frames_csum_ip);
	UPDATE_ESTAT_QSTAT(rx_ofld_frames_csum_tcp_udp);
	UPDATE_ESTAT_QSTAT(rx_budget_reached);
	UPDATE_ESTAT_QSTAT(tx_pkts);
	UPDATE_ESTAT_QSTAT(tx_soft_errors);
	UPDATE_ESTAT_QSTAT(tx_ofld_frames_csum_ip);
	UPDATE_ESTAT_QSTAT(tx_ofld_frames_csum_tcp);
	UPDATE_ESTAT_QSTAT(tx_ofld_frames_csum_udp);
	UPDATE_ESTAT_QSTAT(tx_encap_failures);
	UPDATE_ESTAT_QSTAT(tx_hw_queue_full);
	UPDATE_ESTAT_QSTAT(tx_hw_max_queue_depth);
	UPDATE_ESTAT_QSTAT(tx_dma_mapping_failure);
	UPDATE_ESTAT_QSTAT(tx_max_drbr_queue_depth);
	UPDATE_ESTAT_QSTAT(tx_window_violation_std);
	UPDATE_ESTAT_QSTAT(tx_chain_lost_mbuf);
	UPDATE_ESTAT_QSTAT(tx_frames_deferred);
	UPDATE_ESTAT_QSTAT(tx_queue_xoff);

	/* mbuf driver statistics */
	UPDATE_ESTAT_QSTAT(mbuf_defrag_attempts);
	UPDATE_ESTAT_QSTAT(mbuf_defrag_failures);
	UPDATE_ESTAT_QSTAT(mbuf_rx_bd_alloc_failed);
	UPDATE_ESTAT_QSTAT(mbuf_rx_bd_mapping_failed);

	/* track the number of allocated mbufs */
	UPDATE_ESTAT_QSTAT(mbuf_alloc_tx);
	UPDATE_ESTAT_QSTAT(mbuf_alloc_rx);
    }
}

static uint8_t
bnx2x_edebug_stats_stopped(struct bnx2x_softc *sc)
{
    uint32_t val;

    if (SHMEM2_HAS(sc, edebug_driver_if[1])) {
	val = SHMEM2_RD(sc, edebug_driver_if[1]);

	if (val == EDEBUG_DRIVER_IF_OP_CODE_DISABLE_STAT) {
	    return TRUE;
	}
    }

    return FALSE;
}

static void
bnx2x_stats_update(struct bnx2x_softc *sc)
{
	uint32_t *stats_comp = BNX2X_SP(sc, stats_comp);

	if (bnx2x_edebug_stats_stopped(sc)) {
		return;
	}

	if (IS_PF(sc)) {

		bnx2x_storm_stats_update(sc);
		bnx2x_hw_stats_post(sc);
		bnx2x_storm_stats_post(sc);
		DELAY_MS(5);

		if (*stats_comp != DMAE_COMP_VAL) {
			return;
		}

		if (sc->port.pmf) {
			bnx2x_hw_stats_update(sc);
		}

		if (bnx2x_storm_stats_update(sc)) {
			if (sc->stats_pending++ == 3) {
				rte_panic("storm stats not updated for 3 times");
			}
			return;
		}
	} else {
		/*
		 * VF doesn't collect HW statistics, and doesn't get completions,
		 * performs only update.
		 */
		bnx2x_storm_stats_update(sc);
	}

	bnx2x_drv_stats_update(sc);
}

static void
bnx2x_port_stats_stop(struct bnx2x_softc *sc)
{
    struct dmae_command *dmae;
    uint32_t opcode;
    int loader_idx = PMF_DMAE_C(sc);
    uint32_t *stats_comp = BNX2X_SP(sc, stats_comp);

    sc->executer_idx = 0;

    opcode = bnx2x_dmae_opcode(sc, DMAE_SRC_PCI, DMAE_DST_GRC, FALSE, 0);

    if (sc->port.port_stx) {
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);

	if (sc->func_stx) {
	    dmae->opcode = bnx2x_dmae_opcode_add_comp(opcode, DMAE_COMP_GRC);
	} else {
	    dmae->opcode = bnx2x_dmae_opcode_add_comp(opcode, DMAE_COMP_PCI);
	}

	dmae->src_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, port_stats));
	dmae->src_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, port_stats));
	dmae->dst_addr_lo = sc->port.port_stx >> 2;
	dmae->dst_addr_hi = 0;
	dmae->len = bnx2x_get_port_stats_dma_len(sc);
	if (sc->func_stx) {
	    dmae->comp_addr_lo = (dmae_reg_go_c[loader_idx] >> 2);
	    dmae->comp_addr_hi = 0;
	    dmae->comp_val = 1;
	} else {
	    dmae->comp_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, stats_comp));
	    dmae->comp_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, stats_comp));
	    dmae->comp_val = DMAE_COMP_VAL;

	    *stats_comp = 0;
	}
    }

    if (sc->func_stx) {
	dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
	dmae->opcode = bnx2x_dmae_opcode_add_comp(opcode, DMAE_COMP_PCI);
	dmae->src_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, func_stats));
	dmae->src_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, func_stats));
	dmae->dst_addr_lo = (sc->func_stx >> 2);
	dmae->dst_addr_hi = 0;
	dmae->len = (sizeof(struct host_func_stats) >> 2);
	dmae->comp_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, stats_comp));
	dmae->comp_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, stats_comp));
	dmae->comp_val = DMAE_COMP_VAL;

	*stats_comp = 0;
    }
}

static void
bnx2x_stats_stop(struct bnx2x_softc *sc)
{
    uint8_t update = FALSE;

    bnx2x_stats_comp(sc);

    if (sc->port.pmf) {
	update = bnx2x_hw_stats_update(sc) == 0;
    }

    update |= bnx2x_storm_stats_update(sc) == 0;

    if (update) {

	if (sc->port.pmf) {
	    bnx2x_port_stats_stop(sc);
	}

	bnx2x_hw_stats_post(sc);
	bnx2x_stats_comp(sc);
    }
}

static void
bnx2x_stats_do_nothing(__rte_unused struct bnx2x_softc *sc)
{
    return;
}

static const struct {
    void (*action)(struct bnx2x_softc *sc);
    enum bnx2x_stats_state next_state;
} bnx2x_stats_stm[STATS_STATE_MAX][STATS_EVENT_MAX] = {
    {
    /* DISABLED PMF */ { bnx2x_stats_pmf_update, STATS_STATE_DISABLED },
    /*      LINK_UP */ { bnx2x_stats_start,      STATS_STATE_ENABLED },
    /*      UPDATE  */ { bnx2x_stats_do_nothing, STATS_STATE_DISABLED },
    /*      STOP    */ { bnx2x_stats_do_nothing, STATS_STATE_DISABLED }
    },
    {
    /* ENABLED  PMF */ { bnx2x_stats_pmf_start,  STATS_STATE_ENABLED },
    /*      LINK_UP */ { bnx2x_stats_restart,    STATS_STATE_ENABLED },
    /*      UPDATE  */ { bnx2x_stats_update,     STATS_STATE_ENABLED },
    /*      STOP    */ { bnx2x_stats_stop,       STATS_STATE_DISABLED }
    }
};

void bnx2x_stats_handle(struct bnx2x_softc *sc, enum bnx2x_stats_event event)
{
	enum bnx2x_stats_state state;

	if (unlikely(sc->panic)) {
		return;
	}

	state = sc->stats_state;
	sc->stats_state = bnx2x_stats_stm[state][event].next_state;

	bnx2x_stats_stm[state][event].action(sc);

	if (event != STATS_EVENT_UPDATE) {
		PMD_DRV_LOG(DEBUG,
				"state %d -> event %d -> state %d",
				state, event, sc->stats_state);
	}
}

static void
bnx2x_port_stats_base_init(struct bnx2x_softc *sc)
{
    struct dmae_command *dmae;
    uint32_t *stats_comp = BNX2X_SP(sc, stats_comp);

    /* sanity */
    if (!sc->port.pmf || !sc->port.port_stx) {
	PMD_DRV_LOG(ERR, "BUG!");
	return;
    }

    sc->executer_idx = 0;

    dmae = BNX2X_SP(sc, dmae[sc->executer_idx++]);
    dmae->opcode = bnx2x_dmae_opcode(sc, DMAE_SRC_PCI, DMAE_DST_GRC,
				   TRUE, DMAE_COMP_PCI);
    dmae->src_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, port_stats));
    dmae->src_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, port_stats));
    dmae->dst_addr_lo = (sc->port.port_stx >> 2);
    dmae->dst_addr_hi = 0;
    dmae->len = bnx2x_get_port_stats_dma_len(sc);
    dmae->comp_addr_lo = U64_LO(BNX2X_SP_MAPPING(sc, stats_comp));
    dmae->comp_addr_hi = U64_HI(BNX2X_SP_MAPPING(sc, stats_comp));
    dmae->comp_val = DMAE_COMP_VAL;

    *stats_comp = 0;
    bnx2x_hw_stats_post(sc);
    bnx2x_stats_comp(sc);
}

/*
 * This function will prepare the statistics ramrod data the way
 * we will only have to increment the statistics counter and
 * send the ramrod each time we have to.
 */
static void
bnx2x_prep_fw_stats_req(struct bnx2x_softc *sc)
{
    int i;
    int first_queue_query_index;
    struct stats_query_header *stats_hdr = &sc->fw_stats_req->hdr;
    rte_iova_t cur_data_offset;
    struct stats_query_entry *cur_query_entry;

    stats_hdr->cmd_num = sc->fw_stats_num;
    stats_hdr->drv_stats_counter = 0;

    /*
     * The storm_counters struct contains the counters of completed
     * statistics requests per storm which are incremented by FW
     * each time it completes hadning a statistics ramrod. We will
     * check these counters in the timer handler and discard a
     * (statistics) ramrod completion.
     */
    cur_data_offset = (sc->fw_stats_data_mapping +
		       offsetof(struct bnx2x_fw_stats_data, storm_counters));

    stats_hdr->stats_counters_addrs.hi = htole32(U64_HI(cur_data_offset));
    stats_hdr->stats_counters_addrs.lo = htole32(U64_LO(cur_data_offset));

    /*
     * Prepare the first stats ramrod (will be completed with
     * the counters equal to zero) - init counters to somethig different.
     */
    memset(&sc->fw_stats_data->storm_counters, 0xff,
	   sizeof(struct stats_counter));

    /**** Port FW statistics data ****/
    cur_data_offset = (sc->fw_stats_data_mapping +
		       offsetof(struct bnx2x_fw_stats_data, port));

    cur_query_entry = &sc->fw_stats_req->query[BNX2X_PORT_QUERY_IDX];

    cur_query_entry->kind = STATS_TYPE_PORT;
    /* For port query index is a DON'T CARE */
    cur_query_entry->index = SC_PORT(sc);
    /* For port query funcID is a DON'T CARE */
    cur_query_entry->funcID = htole16(SC_FUNC(sc));
    cur_query_entry->address.hi = htole32(U64_HI(cur_data_offset));
    cur_query_entry->address.lo = htole32(U64_LO(cur_data_offset));

    /**** PF FW statistics data ****/
    cur_data_offset = (sc->fw_stats_data_mapping +
		       offsetof(struct bnx2x_fw_stats_data, pf));

    cur_query_entry = &sc->fw_stats_req->query[BNX2X_PF_QUERY_IDX];

    cur_query_entry->kind = STATS_TYPE_PF;
    /* For PF query index is a DON'T CARE */
    cur_query_entry->index = SC_PORT(sc);
    cur_query_entry->funcID = htole16(SC_FUNC(sc));
    cur_query_entry->address.hi = htole32(U64_HI(cur_data_offset));
    cur_query_entry->address.lo = htole32(U64_LO(cur_data_offset));

    /**** Clients' queries ****/
    cur_data_offset = (sc->fw_stats_data_mapping +
		       offsetof(struct bnx2x_fw_stats_data, queue_stats));

    /*
     * First queue query index depends whether FCoE offloaded request will
     * be included in the ramrod
     */
	first_queue_query_index = (BNX2X_FIRST_QUEUE_QUERY_IDX - 1);

    for (i = 0; i < sc->num_queues; i++) {
	cur_query_entry =
	    &sc->fw_stats_req->query[first_queue_query_index + i];

	cur_query_entry->kind = STATS_TYPE_QUEUE;
	cur_query_entry->index = bnx2x_stats_id(&sc->fp[i]);
	cur_query_entry->funcID = htole16(SC_FUNC(sc));
	cur_query_entry->address.hi = htole32(U64_HI(cur_data_offset));
	cur_query_entry->address.lo = htole32(U64_LO(cur_data_offset));

	cur_data_offset += sizeof(struct per_queue_stats);
    }
}

void bnx2x_memset_stats(struct bnx2x_softc *sc)
{
	int i;

	/* function stats */
	for (i = 0; i < sc->num_queues; i++) {
		struct bnx2x_fastpath *fp = &sc->fp[i];

		memset(&fp->old_tclient, 0,
				sizeof(fp->old_tclient));
		memset(&fp->old_uclient, 0,
				sizeof(fp->old_uclient));
		memset(&fp->old_xclient, 0,
				sizeof(fp->old_xclient));
		if (sc->stats_init) {
			memset(&fp->eth_q_stats, 0,
					sizeof(fp->eth_q_stats));
			memset(&fp->eth_q_stats_old, 0,
					sizeof(fp->eth_q_stats_old));
		}
	}

	if (sc->stats_init) {
		memset(&sc->net_stats_old, 0, sizeof(sc->net_stats_old));
		memset(&sc->fw_stats_old, 0, sizeof(sc->fw_stats_old));
		memset(&sc->eth_stats_old, 0, sizeof(sc->eth_stats_old));
		memset(&sc->eth_stats, 0, sizeof(sc->eth_stats));
		memset(&sc->func_stats, 0, sizeof(sc->func_stats));
	}

	sc->stats_state = STATS_STATE_DISABLED;

	if (sc->port.pmf && sc->port.port_stx)
		bnx2x_port_stats_base_init(sc);

	/* mark the end of statistics initialization */
	sc->stats_init = false;
}

void
bnx2x_stats_init(struct bnx2x_softc *sc)
{
	int /*abs*/port = SC_PORT(sc);
	int mb_idx = SC_FW_MB_IDX(sc);
	int i;

	sc->stats_pending = 0;
	sc->executer_idx = 0;
	sc->stats_counter = 0;

	sc->stats_init = TRUE;

	/* port and func stats for management */
	if (!BNX2X_NOMCP(sc)) {
		sc->port.port_stx = SHMEM_RD(sc, port_mb[port].port_stx);
		sc->func_stx = SHMEM_RD(sc, func_mb[mb_idx].fw_mb_param);
	} else {
		sc->port.port_stx = 0;
		sc->func_stx = 0;
	}

	PMD_DRV_LOG(DEBUG, "port_stx 0x%x func_stx 0x%x",
			sc->port.port_stx, sc->func_stx);

	/* pmf should retrieve port statistics from SP on a non-init*/
	if (!sc->stats_init && sc->port.pmf && sc->port.port_stx) {
		bnx2x_stats_handle(sc, STATS_EVENT_PMF);
	}

	port = SC_PORT(sc);
	/* port stats */
	memset(&(sc->port.old_nig_stats), 0, sizeof(struct nig_stats));
	sc->port.old_nig_stats.brb_discard =
		REG_RD(sc, NIG_REG_STAT0_BRB_DISCARD + port*0x38);
	sc->port.old_nig_stats.brb_truncate =
		REG_RD(sc, NIG_REG_STAT0_BRB_TRUNCATE + port*0x38);
	if (!CHIP_IS_E3(sc)) {
		REG_RD_DMAE(sc, NIG_REG_STAT0_EGRESS_MAC_PKT0 + port*0x50,
				&(sc->port.old_nig_stats.egress_mac_pkt0_lo), 2);
		REG_RD_DMAE(sc, NIG_REG_STAT0_EGRESS_MAC_PKT1 + port*0x50,
				&(sc->port.old_nig_stats.egress_mac_pkt1_lo), 2);
	}

	/* function stats */
	for (i = 0; i < sc->num_queues; i++) {
		memset(&sc->fp[i].old_tclient, 0, sizeof(sc->fp[i].old_tclient));
		memset(&sc->fp[i].old_uclient, 0, sizeof(sc->fp[i].old_uclient));
		memset(&sc->fp[i].old_xclient, 0, sizeof(sc->fp[i].old_xclient));
		if (sc->stats_init) {
			memset(&sc->fp[i].eth_q_stats, 0,
					sizeof(sc->fp[i].eth_q_stats));
			memset(&sc->fp[i].eth_q_stats_old, 0,
					sizeof(sc->fp[i].eth_q_stats_old));
		}
	}

	/* prepare statistics ramrod data */
	bnx2x_prep_fw_stats_req(sc);

	if (sc->stats_init) {
		memset(&sc->net_stats_old, 0, sizeof(sc->net_stats_old));
		memset(&sc->fw_stats_old, 0, sizeof(sc->fw_stats_old));
		memset(&sc->eth_stats_old, 0, sizeof(sc->eth_stats_old));
		memset(&sc->eth_stats, 0, sizeof(sc->eth_stats));
		memset(&sc->func_stats, 0, sizeof(sc->func_stats));

		/* Clean SP from previous statistics */
		if (sc->func_stx) {
			memset(BNX2X_SP(sc, func_stats), 0, sizeof(struct host_func_stats));
			bnx2x_func_stats_init(sc);
			bnx2x_hw_stats_post(sc);
			bnx2x_stats_comp(sc);
		}
	}

	sc->stats_state = STATS_STATE_DISABLED;

	if (sc->port.pmf && sc->port.port_stx) {
		bnx2x_port_stats_base_init(sc);
	}

	/* mark the end of statistics initialization */
	sc->stats_init = FALSE;
}

void
bnx2x_save_statistics(struct bnx2x_softc *sc)
{
	int i;

	/* save queue statistics */
	for (i = 0; i < sc->num_queues; i++) {
		struct bnx2x_fastpath *fp = &sc->fp[i];
		struct bnx2x_eth_q_stats *qstats = &fp->eth_q_stats;
		struct bnx2x_eth_q_stats_old *qstats_old = &fp->eth_q_stats_old;

		UPDATE_QSTAT_OLD(total_unicast_bytes_received_hi);
		UPDATE_QSTAT_OLD(total_unicast_bytes_received_lo);
		UPDATE_QSTAT_OLD(total_broadcast_bytes_received_hi);
		UPDATE_QSTAT_OLD(total_broadcast_bytes_received_lo);
		UPDATE_QSTAT_OLD(total_multicast_bytes_received_hi);
		UPDATE_QSTAT_OLD(total_multicast_bytes_received_lo);
		UPDATE_QSTAT_OLD(total_unicast_bytes_transmitted_hi);
		UPDATE_QSTAT_OLD(total_unicast_bytes_transmitted_lo);
		UPDATE_QSTAT_OLD(total_broadcast_bytes_transmitted_hi);
		UPDATE_QSTAT_OLD(total_broadcast_bytes_transmitted_lo);
		UPDATE_QSTAT_OLD(total_multicast_bytes_transmitted_hi);
		UPDATE_QSTAT_OLD(total_multicast_bytes_transmitted_lo);
	}

	/* store port firmware statistics */
	if (sc->port.pmf) {
		struct bnx2x_eth_stats *estats = &sc->eth_stats;
		struct bnx2x_fw_port_stats_old *fwstats = &sc->fw_stats_old;
		struct host_port_stats *pstats = BNX2X_SP(sc, port_stats);

		fwstats->pfc_frames_rx_hi = pstats->pfc_frames_rx_hi;
		fwstats->pfc_frames_rx_lo = pstats->pfc_frames_rx_lo;
		fwstats->pfc_frames_tx_hi = pstats->pfc_frames_tx_hi;
		fwstats->pfc_frames_tx_lo = pstats->pfc_frames_tx_lo;

		if (IS_MF(sc)) {
			UPDATE_FW_STAT_OLD(mac_filter_discard);
			UPDATE_FW_STAT_OLD(mf_tag_discard);
			UPDATE_FW_STAT_OLD(brb_truncate_discard);
			UPDATE_FW_STAT_OLD(mac_discard);
		}
	}
}
