// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2021 Gerhard Engleder <gerhard@engleder-embedded.com> */

#include "tsnep.h"

#include <net/pkt_sched.h>

enum tsnep_test {
        TSNEP_TEST_ENABLE = 0,
        TSNEP_TEST_TAPRIO,
        TSNEP_TEST_TAPRIO_CHANGE,
        TSNEP_TEST_TAPRIO_EXTENSION,
};

static const char tsnep_test_strings[][ETH_GSTRING_LEN] = {
        "Enable timeout        (offline)",
        "TAPRIO                (offline)",
        "TAPRIO change         (offline)",
        "TAPRIO extension      (offline)",
};

#define TSNEP_TEST_COUNT (sizeof(tsnep_test_strings) / ETH_GSTRING_LEN)

static bool enable_gc_timeout(struct tsnep_adapter *adapter)
{
        iowrite8(TSNEP_GC_ENABLE_TIMEOUT, adapter->addr + TSNEP_GC);
        if (!(ioread32(adapter->addr + TSNEP_GC) & TSNEP_GC_TIMEOUT_ACTIVE))
                return false;

        return true;
}

static bool gc_timeout_signaled(struct tsnep_adapter *adapter)
{
        if (ioread32(adapter->addr + TSNEP_GC) & TSNEP_GC_TIMEOUT_SIGNAL)
                return true;

        return false;
}

static bool ack_gc_timeout(struct tsnep_adapter *adapter)
{
        iowrite8(TSNEP_GC_ENABLE_TIMEOUT, adapter->addr + TSNEP_GC);
        if (ioread32(adapter->addr + TSNEP_GC) &
            (TSNEP_GC_TIMEOUT_ACTIVE | TSNEP_GC_TIMEOUT_SIGNAL))
                return false;
        return true;
}

static bool enable_gc(struct tsnep_adapter *adapter, bool a)
{
        u8 enable;
        u8 active;

        if (a) {
                enable = TSNEP_GC_ENABLE_A;
                active = TSNEP_GC_ACTIVE_A;
        } else {
                enable = TSNEP_GC_ENABLE_B;
                active = TSNEP_GC_ACTIVE_B;
        }

        iowrite8(enable, adapter->addr + TSNEP_GC);
        if (!(ioread32(adapter->addr + TSNEP_GC) & active))
                return false;

        return true;
}

static bool disable_gc(struct tsnep_adapter *adapter)
{
        iowrite8(TSNEP_GC_DISABLE, adapter->addr + TSNEP_GC);
        if (ioread32(adapter->addr + TSNEP_GC) &
            (TSNEP_GC_ACTIVE_A | TSNEP_GC_ACTIVE_B))
                return false;

        return true;
}

static bool gc_delayed_enable(struct tsnep_adapter *adapter, bool a, int delay)
{
        u64 before, after;
        u32 time;
        bool enabled;

        if (!disable_gc(adapter))
                return false;

        before = ktime_get_ns();

        if (!enable_gc_timeout(adapter))
                return false;

        /* for start time after timeout, the timeout can guarantee, that enable
         * is blocked if too late
         */
        time = ioread32(adapter->addr + ECM_SYSTEM_TIME_LOW);
        time += TSNEP_GC_TIMEOUT;
        iowrite32(time, adapter->addr + TSNEP_GC_TIME);

        ndelay(delay);

        enabled = enable_gc(adapter, a);
        after = ktime_get_ns();

        if (delay > TSNEP_GC_TIMEOUT) {
                /* timeout must have blocked enable */
                if (enabled)
                        return false;
        } else if ((after - before) < TSNEP_GC_TIMEOUT * 14 / 16) {
                /* timeout must not have blocked enable */
                if (!enabled)
                        return false;
        }

        if (enabled) {
                if (gc_timeout_signaled(adapter))
                        return false;
        } else {
                if (!gc_timeout_signaled(adapter))
                        return false;
                if (!ack_gc_timeout(adapter))
                        return false;
        }

        if (!disable_gc(adapter))
                return false;

        return true;
}

static bool tsnep_test_gc_enable(struct tsnep_adapter *adapter)
{
        int i;

        iowrite32(0x80000001, adapter->addr + TSNEP_GCL_A + 0);
        iowrite32(100000, adapter->addr + TSNEP_GCL_A + 4);

        for (i = 0; i < 200000; i += 100) {
                if (!gc_delayed_enable(adapter, true, i))
                        return false;
        }

        iowrite32(0x80000001, adapter->addr + TSNEP_GCL_B + 0);
        iowrite32(100000, adapter->addr + TSNEP_GCL_B + 4);

        for (i = 0; i < 200000; i += 100) {
                if (!gc_delayed_enable(adapter, false, i))
                        return false;
        }

        return true;
}

static void delay_base_time(struct tsnep_adapter *adapter,
                            struct tc_taprio_qopt_offload *qopt, s64 ms)
{
        u64 system_time;
        u64 base_time = ktime_to_ns(qopt->base_time);
        u64 n;

        tsnep_get_system_time(adapter, &system_time);
        system_time += ms * 1000000;
        n = div64_u64(system_time - base_time, qopt->cycle_time);

        qopt->base_time = ktime_add_ns(qopt->base_time,
                                       (n + 1) * qopt->cycle_time);
}

static void get_gate_state(struct tsnep_adapter *adapter, u32 *gc, u32 *gc_time,
                           u64 *system_time)
{
        u32 time_high_before;
        u32 time_low;
        u32 time_high;
        u32 gc_time_before;

        time_high = ioread32(adapter->addr + ECM_SYSTEM_TIME_HIGH);
        *gc_time = ioread32(adapter->addr + TSNEP_GC_TIME);
        do {
                time_low = ioread32(adapter->addr + ECM_SYSTEM_TIME_LOW);
                *gc = ioread32(adapter->addr + TSNEP_GC);

                gc_time_before = *gc_time;
                *gc_time = ioread32(adapter->addr + TSNEP_GC_TIME);
                time_high_before = time_high;
                time_high = ioread32(adapter->addr + ECM_SYSTEM_TIME_HIGH);
        } while ((time_high != time_high_before) ||
                 (*gc_time != gc_time_before));

        *system_time = (((u64)time_high) << 32) | ((u64)time_low);
}

static int get_operation(struct tsnep_gcl *gcl, u64 system_time, u64 *next)
{
        u64 n = div64_u64(system_time - gcl->base_time, gcl->cycle_time);
        u64 cycle_start = gcl->base_time + gcl->cycle_time * n;
        int i;

        *next = cycle_start;
        for (i = 0; i < gcl->count; i++) {
                *next += gcl->operation[i].interval;
                if (*next > system_time)
                        break;
        }

        return i;
}

static bool check_gate(struct tsnep_adapter *adapter)
{
        u32 gc_time;
        u32 gc;
        u64 system_time;
        struct tsnep_gcl *curr;
        struct tsnep_gcl *prev;
        u64 next_time;
        u8 gate_open;
        u8 next_gate_open;

        get_gate_state(adapter, &gc, &gc_time, &system_time);

        if (gc & TSNEP_GC_ACTIVE_A) {
                curr = &adapter->gcl[0];
                prev = &adapter->gcl[1];
        } else if (gc & TSNEP_GC_ACTIVE_B) {
                curr = &adapter->gcl[1];
                prev = &adapter->gcl[0];
        } else {
                return false;
        }
        if (curr->start_time <= system_time) {
                /* GCL is already active */
                int index;

                index = get_operation(curr, system_time, &next_time);
                gate_open = curr->operation[index].properties & TSNEP_GCL_MASK;
                if (index == curr->count - 1)
                        index = 0;
                else
                        index++;
                next_gate_open =
                        curr->operation[index].properties & TSNEP_GCL_MASK;
        } else if (curr->change) {
                /* operation of previous GCL is active */
                int index;
                u64 start_before;
                u64 n;

                index = get_operation(prev, system_time, &next_time);
                next_time = curr->start_time;
                start_before = prev->base_time;
                n = div64_u64(curr->start_time - start_before,
                              prev->cycle_time);
                start_before += n * prev->cycle_time;
                if (curr->start_time == start_before)
                        start_before -= prev->cycle_time;
                if (((start_before + prev->cycle_time_extension) >=
                     curr->start_time) &&
                    (curr->start_time - prev->cycle_time_extension <=
                     system_time)) {
                        /* extend */
                        index = prev->count - 1;
                }
                gate_open = prev->operation[index].properties & TSNEP_GCL_MASK;
                next_gate_open =
                        curr->operation[0].properties & TSNEP_GCL_MASK;
        } else {
                /* GCL is waiting for start */
                next_time = curr->start_time;
                gate_open = 0xFF;
                next_gate_open = curr->operation[0].properties & TSNEP_GCL_MASK;
        }

        if (gc_time != (next_time & 0xFFFFFFFF)) {
                dev_err(&adapter->pdev->dev, "gate control time 0x%x!=0x%llx\n",
                        gc_time, next_time);
                return false;
        }
        if (((gc & TSNEP_GC_OPEN) >> TSNEP_GC_OPEN_SHIFT) != gate_open) {
                dev_err(&adapter->pdev->dev,
                        "gate control open 0x%02x!=0x%02x\n",
                        ((gc & TSNEP_GC_OPEN) >> TSNEP_GC_OPEN_SHIFT),
                        gate_open);
                return false;
        }
        if (((gc & TSNEP_GC_NEXT_OPEN) >> TSNEP_GC_NEXT_OPEN_SHIFT) !=
            next_gate_open) {
                dev_err(&adapter->pdev->dev,
                        "gate control next open 0x%02x!=0x%02x\n",
                        ((gc & TSNEP_GC_NEXT_OPEN) >> TSNEP_GC_NEXT_OPEN_SHIFT),
                        next_gate_open);
                return false;
        }

        return true;
}

static bool check_gate_duration(struct tsnep_adapter *adapter, s64 ms)
{
        ktime_t start = ktime_get();

        do {
                if (!check_gate(adapter))
                        return false;
        } while (ktime_ms_delta(ktime_get(), start) < ms);

        return true;
}

static bool enable_check_taprio(struct tsnep_adapter *adapter,
                                struct tc_taprio_qopt_offload *qopt, s64 ms)
{
        int retval;

        retval = tsnep_tc_setup(adapter->netdev, TC_SETUP_QDISC_TAPRIO, qopt);
        if (retval)
                return false;

        if (!check_gate_duration(adapter, ms))
                return false;

        return true;
}

static bool disable_taprio(struct tsnep_adapter *adapter)
{
        struct tc_taprio_qopt_offload qopt;
        int retval;

        memset(&qopt, 0, sizeof(qopt));
        qopt.cmd = TAPRIO_CMD_DESTROY;
        retval = tsnep_tc_setup(adapter->netdev, TC_SETUP_QDISC_TAPRIO, &qopt);
        if (retval)
                return false;

        return true;
}

static bool run_taprio(struct tsnep_adapter *adapter,
                       struct tc_taprio_qopt_offload *qopt, s64 ms)
{
        if (!enable_check_taprio(adapter, qopt, ms))
                return false;

        if (!disable_taprio(adapter))
                return false;

        return true;
}

static bool tsnep_test_taprio(struct tsnep_adapter *adapter)
{
        struct tc_taprio_qopt_offload *qopt;
        int i;

        qopt = kzalloc_flex(*qopt, entries, 255);
        if (!qopt)
                return false;
        for (i = 0; i < 255; i++)
                qopt->entries[i].command = TC_TAPRIO_CMD_SET_GATES;

        qopt->cmd = TAPRIO_CMD_REPLACE;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 1500000;
        qopt->cycle_time_extension = 0;
        qopt->entries[0].gate_mask = 0x02;
        qopt->entries[0].interval = 200000;
        qopt->entries[1].gate_mask = 0x03;
        qopt->entries[1].interval = 800000;
        qopt->entries[2].gate_mask = 0x07;
        qopt->entries[2].interval = 240000;
        qopt->entries[3].gate_mask = 0x01;
        qopt->entries[3].interval = 80000;
        qopt->entries[4].gate_mask = 0x04;
        qopt->entries[4].interval = 70000;
        qopt->entries[5].gate_mask = 0x06;
        qopt->entries[5].interval = 60000;
        qopt->entries[6].gate_mask = 0x0F;
        qopt->entries[6].interval = 50000;
        qopt->num_entries = 7;
        if (!run_taprio(adapter, qopt, 100))
                goto failed;

        qopt->cmd = TAPRIO_CMD_REPLACE;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 411854;
        qopt->cycle_time_extension = 0;
        qopt->entries[0].gate_mask = 0x17;
        qopt->entries[0].interval = 23842;
        qopt->entries[1].gate_mask = 0x16;
        qopt->entries[1].interval = 13482;
        qopt->entries[2].gate_mask = 0x15;
        qopt->entries[2].interval = 49428;
        qopt->entries[3].gate_mask = 0x14;
        qopt->entries[3].interval = 38189;
        qopt->entries[4].gate_mask = 0x13;
        qopt->entries[4].interval = 92321;
        qopt->entries[5].gate_mask = 0x12;
        qopt->entries[5].interval = 71239;
        qopt->entries[6].gate_mask = 0x11;
        qopt->entries[6].interval = 69932;
        qopt->entries[7].gate_mask = 0x10;
        qopt->entries[7].interval = 53421;
        qopt->num_entries = 8;
        if (!run_taprio(adapter, qopt, 100))
                goto failed;

        qopt->cmd = TAPRIO_CMD_REPLACE;
        qopt->base_time = ktime_set(0, 0);
        delay_base_time(adapter, qopt, 12);
        qopt->cycle_time = 125000;
        qopt->cycle_time_extension = 0;
        qopt->entries[0].gate_mask = 0x27;
        qopt->entries[0].interval = 15000;
        qopt->entries[1].gate_mask = 0x26;
        qopt->entries[1].interval = 15000;
        qopt->entries[2].gate_mask = 0x25;
        qopt->entries[2].interval = 12500;
        qopt->entries[3].gate_mask = 0x24;
        qopt->entries[3].interval = 17500;
        qopt->entries[4].gate_mask = 0x23;
        qopt->entries[4].interval = 10000;
        qopt->entries[5].gate_mask = 0x22;
        qopt->entries[5].interval = 11000;
        qopt->entries[6].gate_mask = 0x21;
        qopt->entries[6].interval = 9000;
        qopt->entries[7].gate_mask = 0x20;
        qopt->entries[7].interval = 10000;
        qopt->entries[8].gate_mask = 0x20;
        qopt->entries[8].interval = 12500;
        qopt->entries[9].gate_mask = 0x20;
        qopt->entries[9].interval = 12500;
        qopt->num_entries = 10;
        if (!run_taprio(adapter, qopt, 100))
                goto failed;

        kfree(qopt);

        return true;

failed:
        disable_taprio(adapter);
        kfree(qopt);

        return false;
}

static bool tsnep_test_taprio_change(struct tsnep_adapter *adapter)
{
        struct tc_taprio_qopt_offload *qopt;
        int i;

        qopt = kzalloc_flex(*qopt, entries, 255);
        if (!qopt)
                return false;
        for (i = 0; i < 255; i++)
                qopt->entries[i].command = TC_TAPRIO_CMD_SET_GATES;

        qopt->cmd = TAPRIO_CMD_REPLACE;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 100000;
        qopt->cycle_time_extension = 0;
        qopt->entries[0].gate_mask = 0x30;
        qopt->entries[0].interval = 20000;
        qopt->entries[1].gate_mask = 0x31;
        qopt->entries[1].interval = 80000;
        qopt->num_entries = 2;
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to identical */
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        delay_base_time(adapter, qopt, 17);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to same cycle time */
        qopt->base_time = ktime_set(0, 0);
        qopt->entries[0].gate_mask = 0x42;
        qopt->entries[1].gate_mask = 0x43;
        delay_base_time(adapter, qopt, 2);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 0);
        qopt->entries[0].gate_mask = 0x54;
        qopt->entries[0].interval = 33333;
        qopt->entries[1].gate_mask = 0x55;
        qopt->entries[1].interval = 66667;
        delay_base_time(adapter, qopt, 23);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 0);
        qopt->entries[0].gate_mask = 0x66;
        qopt->entries[0].interval = 50000;
        qopt->entries[1].gate_mask = 0x67;
        qopt->entries[1].interval = 25000;
        qopt->entries[2].gate_mask = 0x68;
        qopt->entries[2].interval = 25000;
        qopt->num_entries = 3;
        delay_base_time(adapter, qopt, 11);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to multiple of cycle time */
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 200000;
        qopt->entries[0].gate_mask = 0x79;
        qopt->entries[0].interval = 50000;
        qopt->entries[1].gate_mask = 0x7A;
        qopt->entries[1].interval = 150000;
        qopt->num_entries = 2;
        delay_base_time(adapter, qopt, 11);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 1000000;
        qopt->entries[0].gate_mask = 0x7B;
        qopt->entries[0].interval = 125000;
        qopt->entries[1].gate_mask = 0x7C;
        qopt->entries[1].interval = 250000;
        qopt->entries[2].gate_mask = 0x7D;
        qopt->entries[2].interval = 375000;
        qopt->entries[3].gate_mask = 0x7E;
        qopt->entries[3].interval = 250000;
        qopt->num_entries = 4;
        delay_base_time(adapter, qopt, 3);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to shorter cycle time */
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 333333;
        qopt->entries[0].gate_mask = 0x8F;
        qopt->entries[0].interval = 166666;
        qopt->entries[1].gate_mask = 0x80;
        qopt->entries[1].interval = 166667;
        qopt->num_entries = 2;
        delay_base_time(adapter, qopt, 11);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 62500;
        qopt->entries[0].gate_mask = 0x81;
        qopt->entries[0].interval = 31250;
        qopt->entries[1].gate_mask = 0x82;
        qopt->entries[1].interval = 15625;
        qopt->entries[2].gate_mask = 0x83;
        qopt->entries[2].interval = 15625;
        qopt->num_entries = 3;
        delay_base_time(adapter, qopt, 1);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to longer cycle time */
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 400000;
        qopt->entries[0].gate_mask = 0x84;
        qopt->entries[0].interval = 100000;
        qopt->entries[1].gate_mask = 0x85;
        qopt->entries[1].interval = 100000;
        qopt->entries[2].gate_mask = 0x86;
        qopt->entries[2].interval = 100000;
        qopt->entries[3].gate_mask = 0x87;
        qopt->entries[3].interval = 100000;
        qopt->num_entries = 4;
        delay_base_time(adapter, qopt, 7);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 1700000;
        qopt->entries[0].gate_mask = 0x88;
        qopt->entries[0].interval = 200000;
        qopt->entries[1].gate_mask = 0x89;
        qopt->entries[1].interval = 300000;
        qopt->entries[2].gate_mask = 0x8A;
        qopt->entries[2].interval = 600000;
        qopt->entries[3].gate_mask = 0x8B;
        qopt->entries[3].interval = 100000;
        qopt->entries[4].gate_mask = 0x8C;
        qopt->entries[4].interval = 500000;
        qopt->num_entries = 5;
        delay_base_time(adapter, qopt, 6);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        if (!disable_taprio(adapter))
                goto failed;

        kfree(qopt);

        return true;

failed:
        disable_taprio(adapter);
        kfree(qopt);

        return false;
}

static bool tsnep_test_taprio_extension(struct tsnep_adapter *adapter)
{
        struct tc_taprio_qopt_offload *qopt;
        int i;

        qopt = kzalloc_flex(*qopt, entries, 255);
        if (!qopt)
                return false;
        for (i = 0; i < 255; i++)
                qopt->entries[i].command = TC_TAPRIO_CMD_SET_GATES;

        qopt->cmd = TAPRIO_CMD_REPLACE;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 100000;
        qopt->cycle_time_extension = 50000;
        qopt->entries[0].gate_mask = 0x90;
        qopt->entries[0].interval = 20000;
        qopt->entries[1].gate_mask = 0x91;
        qopt->entries[1].interval = 80000;
        qopt->num_entries = 2;
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to different phase */
        qopt->base_time = ktime_set(0, 50000);
        qopt->entries[0].gate_mask = 0x92;
        qopt->entries[0].interval = 33000;
        qopt->entries[1].gate_mask = 0x93;
        qopt->entries[1].interval = 67000;
        qopt->num_entries = 2;
        delay_base_time(adapter, qopt, 2);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to different phase and longer cycle time */
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 1000000;
        qopt->cycle_time_extension = 700000;
        qopt->entries[0].gate_mask = 0x94;
        qopt->entries[0].interval = 400000;
        qopt->entries[1].gate_mask = 0x95;
        qopt->entries[1].interval = 600000;
        qopt->num_entries = 2;
        delay_base_time(adapter, qopt, 7);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 700000);
        qopt->cycle_time = 2000000;
        qopt->cycle_time_extension = 1900000;
        qopt->entries[0].gate_mask = 0x96;
        qopt->entries[0].interval = 400000;
        qopt->entries[1].gate_mask = 0x97;
        qopt->entries[1].interval = 1600000;
        qopt->num_entries = 2;
        delay_base_time(adapter, qopt, 9);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to different phase and shorter cycle time */
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 1500000;
        qopt->cycle_time_extension = 700000;
        qopt->entries[0].gate_mask = 0x98;
        qopt->entries[0].interval = 400000;
        qopt->entries[1].gate_mask = 0x99;
        qopt->entries[1].interval = 600000;
        qopt->entries[2].gate_mask = 0x9A;
        qopt->entries[2].interval = 500000;
        qopt->num_entries = 3;
        delay_base_time(adapter, qopt, 3);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 100000);
        qopt->cycle_time = 500000;
        qopt->cycle_time_extension = 300000;
        qopt->entries[0].gate_mask = 0x9B;
        qopt->entries[0].interval = 150000;
        qopt->entries[1].gate_mask = 0x9C;
        qopt->entries[1].interval = 350000;
        qopt->num_entries = 2;
        delay_base_time(adapter, qopt, 9);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        /* change to different cycle time */
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 1000000;
        qopt->cycle_time_extension = 700000;
        qopt->entries[0].gate_mask = 0xAD;
        qopt->entries[0].interval = 400000;
        qopt->entries[1].gate_mask = 0xAE;
        qopt->entries[1].interval = 300000;
        qopt->entries[2].gate_mask = 0xAF;
        qopt->entries[2].interval = 300000;
        qopt->num_entries = 3;
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 400000;
        qopt->cycle_time_extension = 100000;
        qopt->entries[0].gate_mask = 0xA0;
        qopt->entries[0].interval = 200000;
        qopt->entries[1].gate_mask = 0xA1;
        qopt->entries[1].interval = 200000;
        qopt->num_entries = 2;
        delay_base_time(adapter, qopt, 19);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 500000;
        qopt->cycle_time_extension = 499999;
        qopt->entries[0].gate_mask = 0xB2;
        qopt->entries[0].interval = 100000;
        qopt->entries[1].gate_mask = 0xB3;
        qopt->entries[1].interval = 100000;
        qopt->entries[2].gate_mask = 0xB4;
        qopt->entries[2].interval = 100000;
        qopt->entries[3].gate_mask = 0xB5;
        qopt->entries[3].interval = 200000;
        qopt->num_entries = 4;
        delay_base_time(adapter, qopt, 19);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;
        qopt->base_time = ktime_set(0, 0);
        qopt->cycle_time = 6000000;
        qopt->cycle_time_extension = 5999999;
        qopt->entries[0].gate_mask = 0xC6;
        qopt->entries[0].interval = 1000000;
        qopt->entries[1].gate_mask = 0xC7;
        qopt->entries[1].interval = 1000000;
        qopt->entries[2].gate_mask = 0xC8;
        qopt->entries[2].interval = 1000000;
        qopt->entries[3].gate_mask = 0xC9;
        qopt->entries[3].interval = 1500000;
        qopt->entries[4].gate_mask = 0xCA;
        qopt->entries[4].interval = 1500000;
        qopt->num_entries = 5;
        delay_base_time(adapter, qopt, 1);
        if (!enable_check_taprio(adapter, qopt, 100))
                goto failed;

        if (!disable_taprio(adapter))
                goto failed;

        kfree(qopt);

        return true;

failed:
        disable_taprio(adapter);
        kfree(qopt);

        return false;
}

int tsnep_ethtool_get_test_count(void)
{
        return TSNEP_TEST_COUNT;
}

void tsnep_ethtool_get_test_strings(u8 *data)
{
        memcpy(data, tsnep_test_strings, sizeof(tsnep_test_strings));
}

void tsnep_ethtool_self_test(struct net_device *netdev,
                             struct ethtool_test *eth_test, u64 *data)
{
        struct tsnep_adapter *adapter = netdev_priv(netdev);

        eth_test->len = TSNEP_TEST_COUNT;

        if (eth_test->flags != ETH_TEST_FL_OFFLINE) {
                /* no tests are done online */
                data[TSNEP_TEST_ENABLE] = 0;
                data[TSNEP_TEST_TAPRIO] = 0;
                data[TSNEP_TEST_TAPRIO_CHANGE] = 0;
                data[TSNEP_TEST_TAPRIO_EXTENSION] = 0;

                return;
        }

        if (tsnep_test_gc_enable(adapter)) {
                data[TSNEP_TEST_ENABLE] = 0;
        } else {
                eth_test->flags |= ETH_TEST_FL_FAILED;
                data[TSNEP_TEST_ENABLE] = 1;
        }

        if (tsnep_test_taprio(adapter)) {
                data[TSNEP_TEST_TAPRIO] = 0;
        } else {
                eth_test->flags |= ETH_TEST_FL_FAILED;
                data[TSNEP_TEST_TAPRIO] = 1;
        }

        if (tsnep_test_taprio_change(adapter)) {
                data[TSNEP_TEST_TAPRIO_CHANGE] = 0;
        } else {
                eth_test->flags |= ETH_TEST_FL_FAILED;
                data[TSNEP_TEST_TAPRIO_CHANGE] = 1;
        }

        if (tsnep_test_taprio_extension(adapter)) {
                data[TSNEP_TEST_TAPRIO_EXTENSION] = 0;
        } else {
                eth_test->flags |= ETH_TEST_FL_FAILED;
                data[TSNEP_TEST_TAPRIO_EXTENSION] = 1;
        }
}