/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 * Copyright (c) 2002-2006 Neterion, Inc.
 */

#include "xgehal-stats.h"
#include "xgehal-device.h"

/*
 * __hal_stats_initialize
 * @stats: xge_hal_stats_t structure that contains, in particular,
 *         Xframe hw stat counters.
 * @devh: HAL device handle.
 *
 * Initialize per-device statistics object.
 * See also: xge_hal_stats_getinfo(), xge_hal_status_e{}.
 */
xge_hal_status_e
__hal_stats_initialize (xge_hal_stats_t *stats, xge_hal_device_h devh)
{
        int dma_flags;
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;

        xge_assert(!stats->is_initialized);

        dma_flags = XGE_OS_DMA_CACHELINE_ALIGNED;
#ifdef XGE_HAL_DMA_STATS_CONSISTENT
        dma_flags |= XGE_OS_DMA_CONSISTENT;
#else
        dma_flags |= XGE_OS_DMA_STREAMING;
#endif
        if (xge_hal_device_check_id(hldev) != XGE_HAL_CARD_TITAN) {
                stats->hw_info =
                        (xge_hal_stats_hw_info_t *) xge_os_dma_malloc(
                                        hldev->pdev,
                                        sizeof(xge_hal_stats_hw_info_t),
                                        dma_flags,
                                        &stats->hw_info_dmah,
                                        &stats->hw_info_dma_acch);

                if (stats->hw_info == NULL) {
                        xge_debug_stats(XGE_ERR, "%s", "can not DMA alloc");
                        return XGE_HAL_ERR_OUT_OF_MEMORY;
                }
                xge_os_memzero(stats->hw_info,
                        sizeof(xge_hal_stats_hw_info_t));
                xge_os_memzero(&stats->hw_info_saved,
                        sizeof(xge_hal_stats_hw_info_t));
                xge_os_memzero(&stats->hw_info_latest,
                        sizeof(xge_hal_stats_hw_info_t));



                stats->dma_addr = xge_os_dma_map(hldev->pdev,
                                       stats->hw_info_dmah,
                                       stats->hw_info,
                                       sizeof(xge_hal_stats_hw_info_t),
                                       XGE_OS_DMA_DIR_FROMDEVICE,
                                       XGE_OS_DMA_CACHELINE_ALIGNED |
#ifdef XGE_HAL_DMA_STATS_CONSISTENT
                                       XGE_OS_DMA_CONSISTENT
#else
                                       XGE_OS_DMA_STREAMING
#endif
                                       );
                if (stats->dma_addr == XGE_OS_INVALID_DMA_ADDR) {
                        xge_debug_stats(XGE_ERR,
                                "can not map vaddr 0x"XGE_OS_LLXFMT" to DMA",
                                (unsigned long long)(ulong_t)stats->hw_info);
                        xge_os_dma_free(hldev->pdev,
                              stats->hw_info,
                              sizeof(xge_hal_stats_hw_info_t),
                              &stats->hw_info_dma_acch,
                              &stats->hw_info_dmah);
                        return XGE_HAL_ERR_OUT_OF_MAPPING;
                }
        }
        else {
                stats->pcim_info_saved =
                        (xge_hal_stats_pcim_info_t *)xge_os_malloc(
                        hldev->pdev, sizeof(xge_hal_stats_pcim_info_t));
                if (stats->pcim_info_saved == NULL) {
                        xge_debug_stats(XGE_ERR, "%s", "can not alloc");
                        return XGE_HAL_ERR_OUT_OF_MEMORY;
                }

                stats->pcim_info_latest =
                        (xge_hal_stats_pcim_info_t *)xge_os_malloc(
                        hldev->pdev, sizeof(xge_hal_stats_pcim_info_t));
                if (stats->pcim_info_latest == NULL) {
                        xge_os_free(hldev->pdev, stats->pcim_info_saved,
                                sizeof(xge_hal_stats_pcim_info_t));
                        xge_debug_stats(XGE_ERR, "%s", "can not alloc");
                        return XGE_HAL_ERR_OUT_OF_MEMORY;
                }

                stats->pcim_info =
                        (xge_hal_stats_pcim_info_t *) xge_os_dma_malloc(
                                        hldev->pdev,
                                        sizeof(xge_hal_stats_pcim_info_t),
                                        dma_flags,
                                        &stats->hw_info_dmah,
                                        &stats->hw_info_dma_acch);

                if (stats->pcim_info == NULL) {
                        xge_os_free(hldev->pdev, stats->pcim_info_saved,
                                sizeof(xge_hal_stats_pcim_info_t));
                        xge_os_free(hldev->pdev, stats->pcim_info_latest,
                                sizeof(xge_hal_stats_pcim_info_t));
                        xge_debug_stats(XGE_ERR, "%s", "can not DMA alloc");
                        return XGE_HAL_ERR_OUT_OF_MEMORY;
                }


                xge_os_memzero(stats->pcim_info,
                        sizeof(xge_hal_stats_pcim_info_t));
                xge_os_memzero(stats->pcim_info_saved,
                        sizeof(xge_hal_stats_pcim_info_t));
                xge_os_memzero(stats->pcim_info_latest,
                        sizeof(xge_hal_stats_pcim_info_t));



                stats->dma_addr = xge_os_dma_map(hldev->pdev,
                                       stats->hw_info_dmah,
                                       stats->pcim_info,
                                       sizeof(xge_hal_stats_pcim_info_t),
                                       XGE_OS_DMA_DIR_FROMDEVICE,
                                       XGE_OS_DMA_CACHELINE_ALIGNED |
#ifdef XGE_HAL_DMA_STATS_CONSISTENT
                                       XGE_OS_DMA_CONSISTENT
#else
                                       XGE_OS_DMA_STREAMING
#endif
                                       );
                if (stats->dma_addr == XGE_OS_INVALID_DMA_ADDR) {
                        xge_debug_stats(XGE_ERR,
                                "can not map vaddr 0x"XGE_OS_LLXFMT" to DMA",
                                (unsigned long long)(ulong_t)stats->hw_info);

                        xge_os_dma_free(hldev->pdev,
                              stats->pcim_info,
                              sizeof(xge_hal_stats_pcim_info_t),
                              &stats->hw_info_dma_acch,
                              &stats->hw_info_dmah);

                        xge_os_free(hldev->pdev, stats->pcim_info_saved,
                                sizeof(xge_hal_stats_pcim_info_t));

                        xge_os_free(hldev->pdev, stats->pcim_info_latest,
                                sizeof(xge_hal_stats_pcim_info_t));

                        return XGE_HAL_ERR_OUT_OF_MAPPING;
                }
        }
        stats->devh = devh;
        xge_os_memzero(&stats->sw_dev_info_stats,
                     sizeof(xge_hal_stats_device_info_t));

        stats->is_initialized = 1;

        return XGE_HAL_OK;
}

static void
__hal_stats_save (xge_hal_stats_t *stats)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)stats->devh;

        if (xge_hal_device_check_id(hldev) != XGE_HAL_CARD_TITAN) {
                xge_hal_stats_hw_info_t *latest;

                (void) xge_hal_stats_hw(stats->devh, &latest);

                xge_os_memcpy(&stats->hw_info_saved, stats->hw_info,
                      sizeof(xge_hal_stats_hw_info_t));
        } else {
                xge_hal_stats_pcim_info_t       *latest;

                (void) xge_hal_stats_pcim(stats->devh, &latest);

                xge_os_memcpy(stats->pcim_info_saved, stats->pcim_info,
                      sizeof(xge_hal_stats_pcim_info_t));
        }
}

/*
 * __hal_stats_disable
 * @stats: xge_hal_stats_t structure that contains, in particular,
 *         Xframe hw stat counters.
 *
 * Ask device to stop collecting stats.
 * See also: xge_hal_stats_getinfo().
 */
void
__hal_stats_disable (xge_hal_stats_t *stats)
{
        xge_hal_device_t *hldev;
        xge_hal_pci_bar0_t *bar0;
        u64 val64;

        xge_assert(stats->hw_info);

        hldev = (xge_hal_device_t*)stats->devh;
        xge_assert(hldev);
        bar0 = (xge_hal_pci_bar0_t *)(void *)hldev->bar0;

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                &bar0->stat_cfg);
        val64 &= ~XGE_HAL_STAT_CFG_STAT_EN;
        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                &bar0->stat_cfg);
        /* flush the write */
        (void)xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                &bar0->stat_cfg);

        xge_debug_stats(XGE_TRACE, "stats disabled at 0x"XGE_OS_LLXFMT,
                 (unsigned long long)stats->dma_addr);

        stats->is_enabled = 0;
}

/*
 * __hal_stats_terminate
 * @stats: xge_hal_stats_t structure that contains, in particular,
 *         Xframe hw stat counters.
 * Terminate per-device statistics object.
 */
void
__hal_stats_terminate (xge_hal_stats_t *stats)
{
        xge_hal_device_t *hldev;

        xge_assert(stats->hw_info);

        hldev = (xge_hal_device_t*)stats->devh;
        xge_assert(hldev);
        xge_assert(stats->is_initialized);
        if (xge_hal_device_check_id(hldev) != XGE_HAL_CARD_TITAN) {
                xge_os_dma_unmap(hldev->pdev,
                       stats->hw_info_dmah,
                       stats->dma_addr,
                       sizeof(xge_hal_stats_hw_info_t),
                       XGE_OS_DMA_DIR_FROMDEVICE);

                xge_os_dma_free(hldev->pdev,
                      stats->hw_info,
                      sizeof(xge_hal_stats_hw_info_t),
                      &stats->hw_info_dma_acch,
                      &stats->hw_info_dmah);
        } else {
                xge_os_dma_unmap(hldev->pdev,
                       stats->hw_info_dmah,
                       stats->dma_addr,
                       sizeof(xge_hal_stats_pcim_info_t),
                       XGE_OS_DMA_DIR_FROMDEVICE);

                xge_os_dma_free(hldev->pdev,
                      stats->pcim_info,
                      sizeof(xge_hal_stats_pcim_info_t),
                      &stats->hw_info_dma_acch,
                      &stats->hw_info_dmah);

                xge_os_free(hldev->pdev, stats->pcim_info_saved,
                        sizeof(xge_hal_stats_pcim_info_t));

                xge_os_free(hldev->pdev, stats->pcim_info_latest,
                                sizeof(xge_hal_stats_pcim_info_t));

        }

        stats->is_initialized = 0;
        stats->is_enabled = 0;
}



/*
 * __hal_stats_enable
 * @stats: xge_hal_stats_t structure that contains, in particular,
 *         Xframe hw stat counters.
 *
 * Ask device to start collecting stats.
 * See also: xge_hal_stats_getinfo().
 */
void
__hal_stats_enable (xge_hal_stats_t *stats)
{
        xge_hal_device_t *hldev;
        xge_hal_pci_bar0_t *bar0;
        u64 val64;
        unsigned int refresh_time_pci_clocks;

        xge_assert(stats->hw_info);

        hldev = (xge_hal_device_t*)stats->devh;
        xge_assert(hldev);

        bar0 = (xge_hal_pci_bar0_t *)(void *)hldev->bar0;

        /* enable statistics
         * For Titan stat_addr offset == 0x09d8, and stat_cfg offset == 0x09d0
        */
        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0,
                stats->dma_addr, &bar0->stat_addr);

        refresh_time_pci_clocks = XGE_HAL_XENA_PER_SEC *
                hldev->config.stats_refresh_time_sec;
        refresh_time_pci_clocks =
                __hal_fix_time_ival_herc(hldev,
                        refresh_time_pci_clocks);

        /* enable enhanced statistics for the HERC */
        if (xge_hal_device_check_id(hldev) == XGE_HAL_CARD_HERC) {
                val64 = XGE_HAL_STAT_BYTE_CNT(0x320);
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0,
                    val64, &bar0->stat_byte_cnt);
        }

#ifdef XGE_HAL_HERC_EMULATION
        /*
         *  The clocks in the emulator are running ~1000 times slower
         *  than real world, so the stats transfer will occur ~1000
         *  times less frequent. STAT_CFG.STAT_TRSF_PERIOD should be
         *  set to 0x20C for Hercules emulation (stats transferred
         *  every 0.5 sec).
        */

        val64 = (0x20C | XGE_HAL_STAT_CFG_STAT_RO |
                XGE_HAL_STAT_CFG_STAT_EN);
#else
        val64 = XGE_HAL_SET_UPDT_PERIOD(refresh_time_pci_clocks) |
                                XGE_HAL_STAT_CFG_STAT_RO |
                                XGE_HAL_STAT_CFG_STAT_EN;
#endif

        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0,
                val64, &bar0->stat_cfg);

        xge_debug_stats(XGE_TRACE, "stats enabled at 0x"XGE_OS_LLXFMT,
                 (unsigned long long)stats->dma_addr);

        stats->is_enabled = 1;
}

/*
 * __hal_stats_pcim_update_latest - Update hw ER stats counters, based on the
 * real hardware maintained counters and the stored "reset" values.
 */
static void
__hal_stats_pcim_update_latest(xge_hal_device_h devh)
{
        xge_hal_device_t *hldev = (xge_hal_device_t *)devh;
        int i;

#define set_latest_stat_link_cnt(_link, _p)                                   \
        hldev->stats.pcim_info_latest->link_info[_link]._p =                  \
        ((hldev->stats.pcim_info->link_info[_link]._p >=                      \
                hldev->stats.pcim_info_saved->link_info[_link]._p) ?          \
                hldev->stats.pcim_info->link_info[_link]._p -                 \
                        hldev->stats.pcim_info_saved->link_info[_link]._p :   \
                ((-1) - hldev->stats.pcim_info_saved->link_info[_link]._p) +  \
                        hldev->stats.pcim_info->link_info[_link]._p)


#define set_latest_stat_aggr_cnt(_aggr, _p)                                   \
        hldev->stats.pcim_info_latest->aggr_info[_aggr]._p =                  \
        ((hldev->stats.pcim_info->aggr_info[_aggr]._p >=                      \
                hldev->stats.pcim_info_saved->aggr_info[_aggr]._p) ?          \
                hldev->stats.pcim_info->aggr_info[_aggr]._p -                 \
                        hldev->stats.pcim_info_saved->aggr_info[_aggr]._p :   \
                ((-1) - hldev->stats.pcim_info_saved->aggr_info[_aggr]._p) +  \
                        hldev->stats.pcim_info->aggr_info[_aggr]._p)


        for (i = 0; i < XGE_HAL_MAC_LINKS; i++) {
                set_latest_stat_link_cnt(i, tx_frms);
                set_latest_stat_link_cnt(i, tx_ttl_eth_octets);
                set_latest_stat_link_cnt(i, tx_data_octets);
                set_latest_stat_link_cnt(i, tx_mcst_frms);
                set_latest_stat_link_cnt(i, tx_bcst_frms);
                set_latest_stat_link_cnt(i, tx_ucst_frms);
                set_latest_stat_link_cnt(i, tx_tagged_frms);
                set_latest_stat_link_cnt(i, tx_vld_ip);
                set_latest_stat_link_cnt(i, tx_vld_ip_octets);
                set_latest_stat_link_cnt(i, tx_icmp);
                set_latest_stat_link_cnt(i, tx_tcp);
                set_latest_stat_link_cnt(i, tx_rst_tcp);
                set_latest_stat_link_cnt(i, tx_udp);
                set_latest_stat_link_cnt(i, tx_unknown_protocol);
                set_latest_stat_link_cnt(i, tx_parse_error);
                set_latest_stat_link_cnt(i, tx_pause_ctrl_frms);
                set_latest_stat_link_cnt(i, tx_lacpdu_frms);
                set_latest_stat_link_cnt(i, tx_marker_pdu_frms);
                set_latest_stat_link_cnt(i, tx_marker_resp_pdu_frms);
                set_latest_stat_link_cnt(i, tx_drop_ip);
                set_latest_stat_link_cnt(i, tx_xgmii_char1_match);
                set_latest_stat_link_cnt(i, tx_xgmii_char2_match);
                set_latest_stat_link_cnt(i, tx_xgmii_column1_match);
                set_latest_stat_link_cnt(i, tx_xgmii_column2_match);
                set_latest_stat_link_cnt(i, tx_drop_frms);
                set_latest_stat_link_cnt(i, tx_any_err_frms);
                set_latest_stat_link_cnt(i, rx_ttl_frms);
                set_latest_stat_link_cnt(i, rx_vld_frms);
                set_latest_stat_link_cnt(i, rx_offld_frms);
                set_latest_stat_link_cnt(i, rx_ttl_eth_octets);
                set_latest_stat_link_cnt(i, rx_data_octets);
                set_latest_stat_link_cnt(i, rx_offld_octets);
                set_latest_stat_link_cnt(i, rx_vld_mcst_frms);
                set_latest_stat_link_cnt(i, rx_vld_bcst_frms);
                set_latest_stat_link_cnt(i, rx_accepted_ucst_frms);
                set_latest_stat_link_cnt(i, rx_accepted_nucst_frms);
                set_latest_stat_link_cnt(i, rx_tagged_frms);
                set_latest_stat_link_cnt(i, rx_long_frms);
                set_latest_stat_link_cnt(i, rx_usized_frms);
                set_latest_stat_link_cnt(i, rx_osized_frms);
                set_latest_stat_link_cnt(i, rx_frag_frms);
                set_latest_stat_link_cnt(i, rx_jabber_frms);
                set_latest_stat_link_cnt(i, rx_ttl_64_frms);
                set_latest_stat_link_cnt(i, rx_ttl_65_127_frms);
                set_latest_stat_link_cnt(i, rx_ttl_128_255_frms);
                set_latest_stat_link_cnt(i, rx_ttl_256_511_frms);
                set_latest_stat_link_cnt(i, rx_ttl_512_1023_frms);
                set_latest_stat_link_cnt(i, rx_ttl_1024_1518_frms);
                set_latest_stat_link_cnt(i, rx_ttl_1519_4095_frms);
                set_latest_stat_link_cnt(i, rx_ttl_40956_8191_frms);
                set_latest_stat_link_cnt(i, rx_ttl_8192_max_frms);
                set_latest_stat_link_cnt(i, rx_ttl_gt_max_frms);
                set_latest_stat_link_cnt(i, rx_ip);
                set_latest_stat_link_cnt(i, rx_ip_octets);
                set_latest_stat_link_cnt(i, rx_hdr_err_ip);
                set_latest_stat_link_cnt(i, rx_icmp);
                set_latest_stat_link_cnt(i, rx_tcp);
                set_latest_stat_link_cnt(i, rx_udp);
                set_latest_stat_link_cnt(i, rx_err_tcp);
                set_latest_stat_link_cnt(i, rx_pause_cnt);
                set_latest_stat_link_cnt(i, rx_pause_ctrl_frms);
                set_latest_stat_link_cnt(i, rx_unsup_ctrl_frms);
                set_latest_stat_link_cnt(i, rx_in_rng_len_err_frms);
                set_latest_stat_link_cnt(i, rx_out_rng_len_err_frms);
                set_latest_stat_link_cnt(i, rx_drop_frms);
                set_latest_stat_link_cnt(i, rx_discarded_frms);
                set_latest_stat_link_cnt(i, rx_drop_ip);
                set_latest_stat_link_cnt(i, rx_err_drp_udp);
                set_latest_stat_link_cnt(i, rx_lacpdu_frms);
                set_latest_stat_link_cnt(i, rx_marker_pdu_frms);
                set_latest_stat_link_cnt(i, rx_marker_resp_pdu_frms);
                set_latest_stat_link_cnt(i, rx_unknown_pdu_frms);
                set_latest_stat_link_cnt(i, rx_illegal_pdu_frms);
                set_latest_stat_link_cnt(i, rx_fcs_discard);
                set_latest_stat_link_cnt(i, rx_len_discard);
                set_latest_stat_link_cnt(i, rx_pf_discard);
                set_latest_stat_link_cnt(i, rx_trash_discard);
                set_latest_stat_link_cnt(i, rx_rts_discard);
                set_latest_stat_link_cnt(i, rx_wol_discard);
                set_latest_stat_link_cnt(i, rx_red_discard);
                set_latest_stat_link_cnt(i, rx_ingm_full_discard);
                set_latest_stat_link_cnt(i, rx_xgmii_data_err_cnt);
                set_latest_stat_link_cnt(i, rx_xgmii_ctrl_err_cnt);
                set_latest_stat_link_cnt(i, rx_xgmii_err_sym);
                set_latest_stat_link_cnt(i, rx_xgmii_char1_match);
                set_latest_stat_link_cnt(i, rx_xgmii_char2_match);
                set_latest_stat_link_cnt(i, rx_xgmii_column1_match);
                set_latest_stat_link_cnt(i, rx_xgmii_column2_match);
                set_latest_stat_link_cnt(i, rx_local_fault);
                set_latest_stat_link_cnt(i, rx_remote_fault);
                set_latest_stat_link_cnt(i, rx_queue_full);
        }

        for (i = 0; i < XGE_HAL_MAC_AGGREGATORS; i++) {
                set_latest_stat_aggr_cnt(i, tx_frms);
                set_latest_stat_aggr_cnt(i, tx_mcst_frms);
                set_latest_stat_aggr_cnt(i, tx_bcst_frms);
                set_latest_stat_aggr_cnt(i, tx_discarded_frms);
                set_latest_stat_aggr_cnt(i, tx_errored_frms);
                set_latest_stat_aggr_cnt(i, rx_frms);
                set_latest_stat_aggr_cnt(i, rx_data_octets);
                set_latest_stat_aggr_cnt(i, rx_mcst_frms);
                set_latest_stat_aggr_cnt(i, rx_bcst_frms);
                set_latest_stat_aggr_cnt(i, rx_discarded_frms);
                set_latest_stat_aggr_cnt(i, rx_errored_frms);
                set_latest_stat_aggr_cnt(i, rx_unknown_protocol_frms);
        }
        return;
}

/*
 * __hal_stats_update_latest - Update hw stats counters, based on the real
 * hardware maintained counters and the stored "reset" values.
 */
static void
__hal_stats_update_latest(xge_hal_device_h devh)
{
        xge_hal_device_t *hldev = (xge_hal_device_t *)devh;

#define set_latest_stat_cnt(_dev, _p)                                   \
        hldev->stats.hw_info_latest._p =                                \
        ((hldev->stats.hw_info->_p >= hldev->stats.hw_info_saved._p) ?  \
          hldev->stats.hw_info->_p - hldev->stats.hw_info_saved._p :    \
          ((-1) - hldev->stats.hw_info_saved._p) + hldev->stats.hw_info->_p)

        if (xge_hal_device_check_id(hldev) == XGE_HAL_CARD_TITAN) {
                __hal_stats_pcim_update_latest(devh);
                return;
        }

        /* Tx MAC statistics counters. */
        set_latest_stat_cnt(hldev, tmac_frms);
        set_latest_stat_cnt(hldev, tmac_data_octets);
        set_latest_stat_cnt(hldev, tmac_drop_frms);
        set_latest_stat_cnt(hldev, tmac_mcst_frms);
        set_latest_stat_cnt(hldev, tmac_bcst_frms);
        set_latest_stat_cnt(hldev, tmac_pause_ctrl_frms);
        set_latest_stat_cnt(hldev, tmac_ttl_octets);
        set_latest_stat_cnt(hldev, tmac_ucst_frms);
        set_latest_stat_cnt(hldev, tmac_nucst_frms);
        set_latest_stat_cnt(hldev, tmac_any_err_frms);
        set_latest_stat_cnt(hldev, tmac_ttl_less_fb_octets);
        set_latest_stat_cnt(hldev, tmac_vld_ip_octets);
        set_latest_stat_cnt(hldev, tmac_vld_ip);
        set_latest_stat_cnt(hldev, tmac_drop_ip);
        set_latest_stat_cnt(hldev, tmac_icmp);
        set_latest_stat_cnt(hldev, tmac_rst_tcp);
        set_latest_stat_cnt(hldev, tmac_tcp);
        set_latest_stat_cnt(hldev, tmac_udp);
        set_latest_stat_cnt(hldev, reserved_0);

        /* Rx MAC Statistics counters. */
        set_latest_stat_cnt(hldev, rmac_vld_frms);
        set_latest_stat_cnt(hldev, rmac_data_octets);
        set_latest_stat_cnt(hldev, rmac_fcs_err_frms);
        set_latest_stat_cnt(hldev, rmac_drop_frms);
        set_latest_stat_cnt(hldev, rmac_vld_mcst_frms);
        set_latest_stat_cnt(hldev, rmac_vld_bcst_frms);
        set_latest_stat_cnt(hldev, rmac_in_rng_len_err_frms);
        set_latest_stat_cnt(hldev, rmac_out_rng_len_err_frms);
        set_latest_stat_cnt(hldev, rmac_long_frms);
        set_latest_stat_cnt(hldev, rmac_pause_ctrl_frms);
        set_latest_stat_cnt(hldev, rmac_unsup_ctrl_frms);
        set_latest_stat_cnt(hldev, rmac_ttl_octets);
        set_latest_stat_cnt(hldev, rmac_accepted_ucst_frms);
        set_latest_stat_cnt(hldev, rmac_accepted_nucst_frms);
        set_latest_stat_cnt(hldev, rmac_discarded_frms);
        set_latest_stat_cnt(hldev, rmac_drop_events);
        set_latest_stat_cnt(hldev, reserved_1);
        set_latest_stat_cnt(hldev, rmac_ttl_less_fb_octets);
        set_latest_stat_cnt(hldev, rmac_ttl_frms);
        set_latest_stat_cnt(hldev, reserved_2);
        set_latest_stat_cnt(hldev, reserved_3);
        set_latest_stat_cnt(hldev, rmac_usized_frms);
        set_latest_stat_cnt(hldev, rmac_osized_frms);
        set_latest_stat_cnt(hldev, rmac_frag_frms);
        set_latest_stat_cnt(hldev, rmac_jabber_frms);
        set_latest_stat_cnt(hldev, reserved_4);
        set_latest_stat_cnt(hldev, rmac_ttl_64_frms);
        set_latest_stat_cnt(hldev, rmac_ttl_65_127_frms);
        set_latest_stat_cnt(hldev, reserved_5);
        set_latest_stat_cnt(hldev, rmac_ttl_128_255_frms);
        set_latest_stat_cnt(hldev, rmac_ttl_256_511_frms);
        set_latest_stat_cnt(hldev, reserved_6);
        set_latest_stat_cnt(hldev, rmac_ttl_512_1023_frms);
        set_latest_stat_cnt(hldev, rmac_ttl_1024_1518_frms);
        set_latest_stat_cnt(hldev, reserved_7);
        set_latest_stat_cnt(hldev, rmac_ip);
        set_latest_stat_cnt(hldev, rmac_ip_octets);
        set_latest_stat_cnt(hldev, rmac_hdr_err_ip);
        set_latest_stat_cnt(hldev, rmac_drop_ip);
        set_latest_stat_cnt(hldev, rmac_icmp);
        set_latest_stat_cnt(hldev, reserved_8);
        set_latest_stat_cnt(hldev, rmac_tcp);
        set_latest_stat_cnt(hldev, rmac_udp);
        set_latest_stat_cnt(hldev, rmac_err_drp_udp);
        set_latest_stat_cnt(hldev, rmac_xgmii_err_sym);
        set_latest_stat_cnt(hldev, rmac_frms_q0);
        set_latest_stat_cnt(hldev, rmac_frms_q1);
        set_latest_stat_cnt(hldev, rmac_frms_q2);
        set_latest_stat_cnt(hldev, rmac_frms_q3);
        set_latest_stat_cnt(hldev, rmac_frms_q4);
        set_latest_stat_cnt(hldev, rmac_frms_q5);
        set_latest_stat_cnt(hldev, rmac_frms_q6);
        set_latest_stat_cnt(hldev, rmac_frms_q7);
        set_latest_stat_cnt(hldev, rmac_full_q0);
        set_latest_stat_cnt(hldev, rmac_full_q1);
        set_latest_stat_cnt(hldev, rmac_full_q2);
        set_latest_stat_cnt(hldev, rmac_full_q3);
        set_latest_stat_cnt(hldev, rmac_full_q4);
        set_latest_stat_cnt(hldev, rmac_full_q5);
        set_latest_stat_cnt(hldev, rmac_full_q6);
        set_latest_stat_cnt(hldev, rmac_full_q7);
        set_latest_stat_cnt(hldev, rmac_pause_cnt);
        set_latest_stat_cnt(hldev, reserved_9);
        set_latest_stat_cnt(hldev, rmac_xgmii_data_err_cnt);
        set_latest_stat_cnt(hldev, rmac_xgmii_ctrl_err_cnt);
        set_latest_stat_cnt(hldev, rmac_accepted_ip);
        set_latest_stat_cnt(hldev, rmac_err_tcp);

        /* PCI/PCI-X Read transaction statistics. */
        set_latest_stat_cnt(hldev, rd_req_cnt);
        set_latest_stat_cnt(hldev, new_rd_req_cnt);
        set_latest_stat_cnt(hldev, new_rd_req_rtry_cnt);
        set_latest_stat_cnt(hldev, rd_rtry_cnt);
        set_latest_stat_cnt(hldev, wr_rtry_rd_ack_cnt);

        /* PCI/PCI-X write transaction statistics. */
        set_latest_stat_cnt(hldev, wr_req_cnt);
        set_latest_stat_cnt(hldev, new_wr_req_cnt);
        set_latest_stat_cnt(hldev, new_wr_req_rtry_cnt);
        set_latest_stat_cnt(hldev, wr_rtry_cnt);
        set_latest_stat_cnt(hldev, wr_disc_cnt);
        set_latest_stat_cnt(hldev, rd_rtry_wr_ack_cnt);

        /* DMA Transaction statistics. */
        set_latest_stat_cnt(hldev, txp_wr_cnt);
        set_latest_stat_cnt(hldev, txd_rd_cnt);
        set_latest_stat_cnt(hldev, txd_wr_cnt);
        set_latest_stat_cnt(hldev, rxd_rd_cnt);
        set_latest_stat_cnt(hldev, rxd_wr_cnt);
        set_latest_stat_cnt(hldev, txf_rd_cnt);
        set_latest_stat_cnt(hldev, rxf_wr_cnt);

        /* Enhanced Herc statistics */
        set_latest_stat_cnt(hldev, tmac_frms_oflow);
        set_latest_stat_cnt(hldev, tmac_data_octets_oflow);
        set_latest_stat_cnt(hldev, tmac_mcst_frms_oflow);
        set_latest_stat_cnt(hldev, tmac_bcst_frms_oflow);
        set_latest_stat_cnt(hldev, tmac_ttl_octets_oflow);
        set_latest_stat_cnt(hldev, tmac_ucst_frms_oflow);
        set_latest_stat_cnt(hldev, tmac_nucst_frms_oflow);
        set_latest_stat_cnt(hldev, tmac_any_err_frms_oflow);
        set_latest_stat_cnt(hldev, tmac_vlan_frms);
        set_latest_stat_cnt(hldev, tmac_vld_ip_oflow);
        set_latest_stat_cnt(hldev, tmac_drop_ip_oflow);
        set_latest_stat_cnt(hldev, tmac_icmp_oflow);
        set_latest_stat_cnt(hldev, tmac_rst_tcp_oflow);
        set_latest_stat_cnt(hldev, tmac_udp_oflow);
        set_latest_stat_cnt(hldev, tpa_unknown_protocol);
        set_latest_stat_cnt(hldev, tpa_parse_failure);
        set_latest_stat_cnt(hldev, rmac_vld_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_data_octets_oflow);
        set_latest_stat_cnt(hldev, rmac_vld_mcst_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_vld_bcst_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_ttl_octets_oflow);
        set_latest_stat_cnt(hldev, rmac_accepted_ucst_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_accepted_nucst_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_discarded_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_drop_events_oflow);
        set_latest_stat_cnt(hldev, rmac_usized_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_osized_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_frag_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_jabber_frms_oflow);
        set_latest_stat_cnt(hldev, rmac_ip_oflow);
        set_latest_stat_cnt(hldev, rmac_drop_ip_oflow);
        set_latest_stat_cnt(hldev, rmac_icmp_oflow);
        set_latest_stat_cnt(hldev, rmac_udp_oflow);
        set_latest_stat_cnt(hldev, rmac_err_drp_udp_oflow);
        set_latest_stat_cnt(hldev, rmac_pause_cnt_oflow);
        set_latest_stat_cnt(hldev, rmac_ttl_1519_4095_frms);
        set_latest_stat_cnt(hldev, rmac_ttl_4096_8191_frms);
        set_latest_stat_cnt(hldev, rmac_ttl_8192_max_frms);
        set_latest_stat_cnt(hldev, rmac_ttl_gt_max_frms);
        set_latest_stat_cnt(hldev, rmac_osized_alt_frms);
        set_latest_stat_cnt(hldev, rmac_jabber_alt_frms);
        set_latest_stat_cnt(hldev, rmac_gt_max_alt_frms);
        set_latest_stat_cnt(hldev, rmac_vlan_frms);
        set_latest_stat_cnt(hldev, rmac_fcs_discard);
        set_latest_stat_cnt(hldev, rmac_len_discard);
        set_latest_stat_cnt(hldev, rmac_da_discard);
        set_latest_stat_cnt(hldev, rmac_pf_discard);
        set_latest_stat_cnt(hldev, rmac_rts_discard);
        set_latest_stat_cnt(hldev, rmac_red_discard);
        set_latest_stat_cnt(hldev, rmac_ingm_full_discard);
        set_latest_stat_cnt(hldev, rmac_accepted_ip_oflow);
        set_latest_stat_cnt(hldev, link_fault_cnt);
}

/**
 * xge_hal_stats_hw - Get HW device statistics.
 * @devh: HAL device handle.
 * @hw_info: Xframe statistic counters. See xge_hal_stats_hw_info_t.
 *           Returned by HAL.
 *
 * Get device and HAL statistics. The latter is part of the in-host statistics
 * that HAL maintains for _that_ device.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_INF_STATS_IS_NOT_READY - Statistics information is not
 * currently available.
 *
 * See also: xge_hal_status_e{}.
 */
xge_hal_status_e
xge_hal_stats_hw(xge_hal_device_h devh, xge_hal_stats_hw_info_t **hw_info)
{
        xge_hal_device_t *hldev = (xge_hal_device_t *)devh;

        xge_assert(xge_hal_device_check_id(hldev) != XGE_HAL_CARD_TITAN)

        if (!hldev->stats.is_initialized ||
            !hldev->stats.is_enabled) {
                *hw_info = NULL;
                return XGE_HAL_INF_STATS_IS_NOT_READY;
        }

#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_STATS_STREAMING)
        xge_os_dma_sync(hldev->pdev,
                      hldev->stats.hw_info_dmah,
                      hldev->stats.dma_addr,
                      0,
                      sizeof(xge_hal_stats_hw_info_t),
                      XGE_OS_DMA_DIR_FROMDEVICE);
#endif

        /*
         * update hw counters, taking into account
         * the "reset" or "saved"
         * values
         */
        __hal_stats_update_latest(devh);

        /*
         * statistics HW bug fixups for Xena and Herc
         */
        if (xge_hal_device_check_id(hldev) == XGE_HAL_CARD_XENA ||
            xge_hal_device_check_id(hldev) == XGE_HAL_CARD_HERC) {
                u64 mcst, bcst;
                xge_hal_stats_hw_info_t *hwsta = &hldev->stats.hw_info_latest;

                mcst = ((u64)hwsta->rmac_vld_mcst_frms_oflow << 32) |
                        hwsta->rmac_vld_mcst_frms;

                bcst = ((u64)hwsta->rmac_vld_bcst_frms_oflow << 32) |
                        hwsta->rmac_vld_bcst_frms;

                mcst -= bcst;

                hwsta->rmac_vld_mcst_frms_oflow = (u32)(mcst >> 32);
                hwsta->rmac_vld_mcst_frms = (u32)mcst;
        }

        *hw_info = &hldev->stats.hw_info_latest;

        return XGE_HAL_OK;
}

/**
 * xge_hal_stats_pcim - Get HW device statistics.
 * @devh: HAL device handle.
 * @hw_info: Xframe statistic counters. See xge_hal_stats_pcim_info_t.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_INF_STATS_IS_NOT_READY - Statistics information is not
 * currently available.
 *
 * See also: xge_hal_status_e{}.
 */
xge_hal_status_e
xge_hal_stats_pcim(xge_hal_device_h devh, xge_hal_stats_pcim_info_t **hw_info)
{
        xge_hal_device_t *hldev = (xge_hal_device_t *)devh;

        xge_assert(xge_hal_device_check_id(hldev) == XGE_HAL_CARD_TITAN)

        if (!hldev->stats.is_initialized ||
            !hldev->stats.is_enabled) {
                *hw_info = NULL;
                return XGE_HAL_INF_STATS_IS_NOT_READY;
        }

#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_STATS_STREAMING)
        xge_os_dma_sync(hldev->pdev,
                      hldev->stats.hw_info_dmah,
                      hldev->stats.dma_addr,
                      0,
                      sizeof(xge_hal_stats_pcim_info_t),
                      XGE_OS_DMA_DIR_FROMDEVICE);
#endif

        /*
         * update hw counters, taking into account
         * the "reset" or "saved"
         * values
         */
        __hal_stats_pcim_update_latest(devh);

        *hw_info = hldev->stats.pcim_info_latest;

        return XGE_HAL_OK;
}

/**
 * xge_hal_stats_device - Get HAL statistics.
 * @devh: HAL device handle.
 * @hw_info: Xframe statistic counters. See xge_hal_stats_hw_info_t.
 *           Returned by HAL.
 * @device_info: HAL statistics. See xge_hal_stats_device_info_t.
 *               Returned by HAL.
 *
 * Get device and HAL statistics. The latter is part of the in-host statistics
 * that HAL maintains for _that_ device.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_INF_STATS_IS_NOT_READY - Statistics information is not
 * currently available.
 *
 * See also: xge_hal_status_e{}.
 */
xge_hal_status_e
xge_hal_stats_device(xge_hal_device_h devh,
                xge_hal_stats_device_info_t **device_info)
{
        xge_hal_device_t *hldev = (xge_hal_device_t *)devh;

        if (!hldev->stats.is_initialized ||
            !hldev->stats.is_enabled) {
                *device_info = NULL;
                return XGE_HAL_INF_STATS_IS_NOT_READY;
        }

        hldev->stats.sw_dev_info_stats.traffic_intr_cnt =
                hldev->stats.sw_dev_info_stats.total_intr_cnt -
                        hldev->stats.sw_dev_info_stats.not_traffic_intr_cnt;

        *device_info = &hldev->stats.sw_dev_info_stats;

        return XGE_HAL_OK;
}

/**
 * xge_hal_stats_channel - Get channel statistics.
 * @channelh: Channel handle.
 * @channel_info: HAL channel statistic counters.
 *                See xge_hal_stats_channel_info_t{}. Returned by HAL.
 *
 * Retrieve statistics of a particular HAL channel. This includes, for instance,
 * number of completions per interrupt, number of traffic interrupts, etc.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_INF_STATS_IS_NOT_READY - Statistics information is not
 * currently available.
 *
 * See also: xge_hal_status_e{}.
 */
xge_hal_status_e
xge_hal_stats_channel(xge_hal_channel_h channelh,
                xge_hal_stats_channel_info_t **channel_info)
{
        xge_hal_stats_hw_info_t *latest;
        xge_hal_channel_t *channel;
        xge_hal_device_t *hldev;

        channel = (xge_hal_channel_t *)channelh;
        if ((channel == NULL) || (channel->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }
        hldev = (xge_hal_device_t *)channel->devh;
        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (!hldev->stats.is_initialized ||
            !hldev->stats.is_enabled ||
            !channel->is_open) {
                *channel_info = NULL;
                return XGE_HAL_INF_STATS_IS_NOT_READY;
        }

        hldev->stats.sw_dev_info_stats.traffic_intr_cnt =
                hldev->stats.sw_dev_info_stats.total_intr_cnt -
                        hldev->stats.sw_dev_info_stats.not_traffic_intr_cnt;

        if (hldev->stats.sw_dev_info_stats.traffic_intr_cnt) {
                int rxcnt = hldev->stats.sw_dev_info_stats.rx_traffic_intr_cnt;
                int txcnt = hldev->stats.sw_dev_info_stats.tx_traffic_intr_cnt;
                if (channel->type == XGE_HAL_CHANNEL_TYPE_FIFO) {
                        if (!txcnt)
                                txcnt = 1;
                        channel->stats.avg_compl_per_intr_cnt =
                                channel->stats.total_compl_cnt / txcnt;
                } else if (channel->type == XGE_HAL_CHANNEL_TYPE_RING &&
                           !hldev->config.bimodal_interrupts) {
                        if (!rxcnt)
                                rxcnt = 1;
                        channel->stats.avg_compl_per_intr_cnt =
                                channel->stats.total_compl_cnt / rxcnt;
                }
                if (channel->stats.avg_compl_per_intr_cnt == 0) {
                        /* to not confuse user */
                        channel->stats.avg_compl_per_intr_cnt = 1;
                }
        }

        (void) xge_hal_stats_hw(hldev, &latest);

        if (channel->stats.total_posts) {
                channel->stats.avg_buffers_per_post =
                        channel->stats.total_buffers /
                                channel->stats.total_posts;
#ifdef XGE_OS_PLATFORM_64BIT
                if (channel->type == XGE_HAL_CHANNEL_TYPE_FIFO) {
                        channel->stats.avg_post_size =
                        (u32)(latest->tmac_ttl_less_fb_octets /
                                channel->stats.total_posts);
                }
#endif
        }

#ifdef XGE_OS_PLATFORM_64BIT
        if (channel->stats.total_buffers &&
            channel->type == XGE_HAL_CHANNEL_TYPE_FIFO) {
                channel->stats.avg_buffer_size =
                        (u32)(latest->tmac_ttl_less_fb_octets /
                                channel->stats.total_buffers);
        }
#endif

        *channel_info = &channel->stats;
        return XGE_HAL_OK;
}

/**
 * xge_hal_stats_reset - Reset (zero-out) device statistics
 * @devh: HAL device handle.
 *
 * Reset all device statistics.
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_INF_STATS_IS_NOT_READY - Statistics information is not
 * currently available.
 *
 * See also: xge_hal_status_e{}, xge_hal_stats_channel_info_t{},
 * xge_hal_stats_sw_err_t{}, xge_hal_stats_device_info_t{}.
 */
xge_hal_status_e
xge_hal_stats_reset(xge_hal_device_h devh)
{
        xge_hal_device_t *hldev = (xge_hal_device_t *)devh;

        if (!hldev->stats.is_initialized ||
            !hldev->stats.is_enabled) {
                return XGE_HAL_INF_STATS_IS_NOT_READY;
        }

        /* save hw stats to calculate the after-reset values */
        __hal_stats_save(&hldev->stats);

        /* zero-out driver-maintained stats, don't reset the saved */
        __hal_stats_soft_reset(hldev, 0);

        return XGE_HAL_OK;
}

/*
 * __hal_stats_soft_reset - Reset software-maintained statistics.
 */
void
__hal_stats_soft_reset (xge_hal_device_h devh, int reset_all)
{
        xge_list_t *item;
        xge_hal_channel_t *channel;
        xge_hal_device_t *hldev = (xge_hal_device_t *)devh;

        if (reset_all)  {
                if (xge_hal_device_check_id(hldev) != XGE_HAL_CARD_TITAN) {
                        xge_os_memzero(&hldev->stats.hw_info_saved,
                               sizeof(xge_hal_stats_hw_info_t));
                        xge_os_memzero(&hldev->stats.hw_info_latest,
                               sizeof(xge_hal_stats_hw_info_t));
                } else {
                        xge_os_memzero(&hldev->stats.pcim_info_saved,
                               sizeof(xge_hal_stats_pcim_info_t));
                        xge_os_memzero(&hldev->stats.pcim_info_latest,
                               sizeof(xge_hal_stats_pcim_info_t));
                }
        }

        /* Reset the "soft" error and informational statistics */
        xge_os_memzero(&hldev->stats.sw_dev_err_stats,
                     sizeof(xge_hal_stats_sw_err_t));
        xge_os_memzero(&hldev->stats.sw_dev_info_stats,
                     sizeof(xge_hal_stats_device_info_t));

        /* for each Rx channel */
        xge_list_for_each(item, &hldev->ring_channels) {
                channel = xge_container_of(item, xge_hal_channel_t, item);
                xge_os_memzero(&channel->stats,
                             sizeof(xge_hal_stats_channel_info_t));
        }

        /* for each Tx channel */
        xge_list_for_each(item, &hldev->fifo_channels) {
                channel = xge_container_of(item, xge_hal_channel_t, item);
                xge_os_memzero(&channel->stats,
                             sizeof(xge_hal_stats_channel_info_t));
        }
}