hw->reset.stats.merge_cnt++; \
} while (0)
+static const char *reset_string[HNS3_MAX_RESET] = {
+ "none", "vf_func", "vf_pf_func", "vf_full", "flr",
+ "vf_global", "pf_func", "global", "IMP",
+};
+
const struct hns3_hw_error mac_afifo_tnl_int[] = {
{ .int_msk = BIT(0), .msg = "egu_cge_afifo_ecc_1bit_err",
.reset_level = HNS3_NONE_RESET },
out:
rte_free(desc);
}
+
+int
+hns3_reset_init(struct hns3_hw *hw)
+{
+ rte_spinlock_init(&hw->lock);
+ hw->reset.level = HNS3_NONE_RESET;
+ hw->reset.stage = RESET_STAGE_NONE;
+ hw->reset.request = 0;
+ hw->reset.pending = 0;
+ rte_atomic16_init(&hw->reset.resetting);
+ rte_atomic16_init(&hw->reset.disable_cmd);
+ hw->reset.wait_data = rte_zmalloc("wait_data",
+ sizeof(struct hns3_wait_data), 0);
+ if (!hw->reset.wait_data) {
+ PMD_INIT_LOG(ERR, "Failed to allocate memory for wait_data");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+void
+hns3_schedule_reset(struct hns3_adapter *hns)
+{
+ struct hns3_hw *hw = &hns->hw;
+
+ /* Reschedule the reset process after successful initialization */
+ if (hw->adapter_state == HNS3_NIC_UNINITIALIZED) {
+ rte_atomic16_set(&hns->hw.reset.schedule, SCHEDULE_PENDING);
+ return;
+ }
+
+ if (hw->adapter_state >= HNS3_NIC_CLOSED)
+ return;
+
+ /* Schedule restart alarm if it is not scheduled yet */
+ if (rte_atomic16_read(&hns->hw.reset.schedule) == SCHEDULE_REQUESTED)
+ return;
+ if (rte_atomic16_read(&hns->hw.reset.schedule) == SCHEDULE_DEFERRED)
+ rte_eal_alarm_cancel(hw->reset.ops->reset_service, hns);
+ rte_atomic16_set(&hns->hw.reset.schedule, SCHEDULE_REQUESTED);
+
+ rte_eal_alarm_set(SWITCH_CONTEXT_US, hw->reset.ops->reset_service, hns);
+}
+
+void
+hns3_schedule_delayed_reset(struct hns3_adapter *hns)
+{
+#define DEFERRED_SCHED_US (3 * MSEC_PER_SEC * USEC_PER_MSEC)
+ struct hns3_hw *hw = &hns->hw;
+
+ /* Do nothing if it is uninited or closed */
+ if (hw->adapter_state == HNS3_NIC_UNINITIALIZED ||
+ hw->adapter_state >= HNS3_NIC_CLOSED) {
+ return;
+ }
+
+ if (rte_atomic16_read(&hns->hw.reset.schedule) != SCHEDULE_NONE)
+ return;
+ rte_atomic16_set(&hns->hw.reset.schedule, SCHEDULE_DEFERRED);
+ rte_eal_alarm_set(DEFERRED_SCHED_US, hw->reset.ops->reset_service, hns);
+}
+
+void
+hns3_wait_callback(void *param)
+{
+ struct hns3_wait_data *data = (struct hns3_wait_data *)param;
+ struct hns3_adapter *hns = data->hns;
+ struct hns3_hw *hw = &hns->hw;
+ uint64_t msec;
+ bool done;
+
+ data->count--;
+ if (data->check_completion) {
+ /*
+ * Check if the current time exceeds the deadline
+ * or a pending reset coming, or reset during close.
+ */
+ msec = get_timeofday_ms();
+ if (msec > data->end_ms || is_reset_pending(hns) ||
+ hw->adapter_state == HNS3_NIC_CLOSING) {
+ done = false;
+ data->count = 0;
+ } else
+ done = data->check_completion(hw);
+ } else
+ done = true;
+
+ if (!done && data->count > 0) {
+ rte_eal_alarm_set(data->interval, hns3_wait_callback, data);
+ return;
+ }
+ if (done)
+ data->result = HNS3_WAIT_SUCCESS;
+ else {
+ hns3_err(hw, "%s wait timeout at stage %d",
+ reset_string[hw->reset.level], hw->reset.stage);
+ data->result = HNS3_WAIT_TIMEOUT;
+ }
+ hns3_schedule_reset(hns);
+}
+
+void
+hns3_notify_reset_ready(struct hns3_hw *hw, bool enable)
+{
+ uint32_t reg_val;
+
+ reg_val = hns3_read_dev(hw, HNS3_CMDQ_TX_DEPTH_REG);
+ if (enable)
+ reg_val |= HNS3_NIC_SW_RST_RDY;
+ else
+ reg_val &= ~HNS3_NIC_SW_RST_RDY;
+
+ hns3_write_dev(hw, HNS3_CMDQ_TX_DEPTH_REG, reg_val);
+}
+
+int
+hns3_reset_req_hw_reset(struct hns3_adapter *hns)
+{
+ struct hns3_hw *hw = &hns->hw;
+
+ if (hw->reset.wait_data->result == HNS3_WAIT_UNKNOWN) {
+ hw->reset.wait_data->hns = hns;
+ hw->reset.wait_data->check_completion = NULL;
+ hw->reset.wait_data->interval = HNS3_RESET_SYNC_US;
+ hw->reset.wait_data->count = 1;
+ hw->reset.wait_data->result = HNS3_WAIT_REQUEST;
+ rte_eal_alarm_set(hw->reset.wait_data->interval,
+ hns3_wait_callback, hw->reset.wait_data);
+ return -EAGAIN;
+ } else if (hw->reset.wait_data->result == HNS3_WAIT_REQUEST)
+ return -EAGAIN;
+
+ /* inform hardware that preparatory work is done */
+ hns3_notify_reset_ready(hw, true);
+ return 0;
+}
+
+static void
+hns3_clear_reset_level(struct hns3_hw *hw, uint64_t *levels)
+{
+ uint64_t merge_cnt = hw->reset.stats.merge_cnt;
+ int64_t tmp;
+
+ switch (hw->reset.level) {
+ case HNS3_IMP_RESET:
+ hns3_atomic_clear_bit(HNS3_IMP_RESET, levels);
+ tmp = hns3_test_and_clear_bit(HNS3_GLOBAL_RESET, levels);
+ HNS3_CHECK_MERGE_CNT(tmp);
+ tmp = hns3_test_and_clear_bit(HNS3_FUNC_RESET, levels);
+ HNS3_CHECK_MERGE_CNT(tmp);
+ break;
+ case HNS3_GLOBAL_RESET:
+ hns3_atomic_clear_bit(HNS3_GLOBAL_RESET, levels);
+ tmp = hns3_test_and_clear_bit(HNS3_FUNC_RESET, levels);
+ HNS3_CHECK_MERGE_CNT(tmp);
+ break;
+ case HNS3_FUNC_RESET:
+ hns3_atomic_clear_bit(HNS3_FUNC_RESET, levels);
+ break;
+ case HNS3_VF_RESET:
+ hns3_atomic_clear_bit(HNS3_VF_RESET, levels);
+ tmp = hns3_test_and_clear_bit(HNS3_VF_PF_FUNC_RESET, levels);
+ HNS3_CHECK_MERGE_CNT(tmp);
+ tmp = hns3_test_and_clear_bit(HNS3_VF_FUNC_RESET, levels);
+ HNS3_CHECK_MERGE_CNT(tmp);
+ break;
+ case HNS3_VF_FULL_RESET:
+ hns3_atomic_clear_bit(HNS3_VF_FULL_RESET, levels);
+ tmp = hns3_test_and_clear_bit(HNS3_VF_FUNC_RESET, levels);
+ HNS3_CHECK_MERGE_CNT(tmp);
+ break;
+ case HNS3_VF_PF_FUNC_RESET:
+ hns3_atomic_clear_bit(HNS3_VF_PF_FUNC_RESET, levels);
+ tmp = hns3_test_and_clear_bit(HNS3_VF_FUNC_RESET, levels);
+ HNS3_CHECK_MERGE_CNT(tmp);
+ break;
+ case HNS3_VF_FUNC_RESET:
+ hns3_atomic_clear_bit(HNS3_VF_FUNC_RESET, levels);
+ break;
+ case HNS3_FLR_RESET:
+ hns3_atomic_clear_bit(HNS3_FLR_RESET, levels);
+ break;
+ case HNS3_NONE_RESET:
+ default:
+ return;
+ };
+ if (merge_cnt != hw->reset.stats.merge_cnt)
+ hns3_warn(hw,
+ "No need to do low-level reset after %s reset. "
+ "merge cnt: %" PRIx64 " total merge cnt: %" PRIx64,
+ reset_string[hw->reset.level],
+ hw->reset.stats.merge_cnt - merge_cnt,
+ hw->reset.stats.merge_cnt);
+}
+
+static bool
+hns3_reset_err_handle(struct hns3_adapter *hns)
+{
+#define MAX_RESET_FAIL_CNT 5
+
+ struct hns3_hw *hw = &hns->hw;
+
+ if (hw->adapter_state == HNS3_NIC_CLOSING)
+ goto reset_fail;
+
+ if (is_reset_pending(hns)) {
+ hw->reset.attempts = 0;
+ hw->reset.stats.fail_cnt++;
+ hns3_warn(hw, "%s reset fail because new Reset is pending "
+ "attempts:%" PRIx64,
+ reset_string[hw->reset.level],
+ hw->reset.stats.fail_cnt);
+ hw->reset.level = HNS3_NONE_RESET;
+ return true;
+ }
+
+ hw->reset.attempts++;
+ if (hw->reset.attempts < MAX_RESET_FAIL_CNT) {
+ hns3_atomic_set_bit(hw->reset.level, &hw->reset.pending);
+ hns3_warn(hw, "%s retry to reset attempts: %d",
+ reset_string[hw->reset.level],
+ hw->reset.attempts);
+ return true;
+ }
+
+ if (rte_atomic16_read(&hw->reset.disable_cmd))
+ hns3_cmd_init(hw);
+reset_fail:
+ hw->reset.attempts = 0;
+ hw->reset.stats.fail_cnt++;
+ hns3_warn(hw, "%s reset fail fail_cnt:%" PRIx64 " success_cnt:%" PRIx64
+ " global_cnt:%" PRIx64 " imp_cnt:%" PRIx64
+ " request_cnt:%" PRIx64 " exec_cnt:%" PRIx64
+ " merge_cnt:%" PRIx64,
+ reset_string[hw->reset.level], hw->reset.stats.fail_cnt,
+ hw->reset.stats.success_cnt, hw->reset.stats.global_cnt,
+ hw->reset.stats.imp_cnt, hw->reset.stats.request_cnt,
+ hw->reset.stats.exec_cnt, hw->reset.stats.merge_cnt);
+
+ /* IMP no longer waiting the ready flag */
+ hns3_notify_reset_ready(hw, true);
+ return false;
+}
+
+static int
+hns3_reset_pre(struct hns3_adapter *hns)
+{
+ struct hns3_hw *hw = &hns->hw;
+ struct timeval tv;
+ int ret;
+
+ if (hw->reset.stage == RESET_STAGE_NONE) {
+ rte_atomic16_set(&hns->hw.reset.resetting, 1);
+ hw->reset.stage = RESET_STAGE_DOWN;
+ ret = hw->reset.ops->stop_service(hns);
+ gettimeofday(&tv, NULL);
+ if (ret) {
+ hns3_warn(hw, "Reset step1 down fail=%d time=%ld.%.6ld",
+ ret, tv.tv_sec, tv.tv_usec);
+ return ret;
+ }
+ hns3_warn(hw, "Reset step1 down success time=%ld.%.6ld",
+ tv.tv_sec, tv.tv_usec);
+ hw->reset.stage = RESET_STAGE_PREWAIT;
+ }
+ if (hw->reset.stage == RESET_STAGE_PREWAIT) {
+ ret = hw->reset.ops->prepare_reset(hns);
+ gettimeofday(&tv, NULL);
+ if (ret) {
+ hns3_warn(hw,
+ "Reset step2 prepare wait fail=%d time=%ld.%.6ld",
+ ret, tv.tv_sec, tv.tv_usec);
+ return ret;
+ }
+ hns3_warn(hw, "Reset step2 prepare wait success time=%ld.%.6ld",
+ tv.tv_sec, tv.tv_usec);
+ hw->reset.stage = RESET_STAGE_REQ_HW_RESET;
+ hw->reset.wait_data->result = HNS3_WAIT_UNKNOWN;
+ }
+ return 0;
+}
+
+static int
+hns3_reset_post(struct hns3_adapter *hns)
+{
+#define TIMEOUT_RETRIES_CNT 5
+ struct hns3_hw *hw = &hns->hw;
+ struct timeval tv_delta;
+ struct timeval tv;
+ int ret = 0;
+
+ if (hw->adapter_state == HNS3_NIC_CLOSING) {
+ hns3_warn(hw, "Don't do reset_post during closing, just uninit cmd");
+ hns3_cmd_uninit(hw);
+ return -EPERM;
+ }
+
+ if (hw->reset.stage == RESET_STAGE_DEV_INIT) {
+ rte_spinlock_lock(&hw->lock);
+ if (hw->reset.mbuf_deferred_free) {
+ hns3_dev_release_mbufs(hns);
+ hw->reset.mbuf_deferred_free = false;
+ }
+ ret = hw->reset.ops->reinit_dev(hns);
+ rte_spinlock_unlock(&hw->lock);
+ gettimeofday(&tv, NULL);
+ if (ret) {
+ hns3_warn(hw, "Reset step5 devinit fail=%d retries=%d",
+ ret, hw->reset.retries);
+ goto err;
+ }
+ hns3_warn(hw, "Reset step5 devinit success time=%ld.%.6ld",
+ tv.tv_sec, tv.tv_usec);
+ hw->reset.retries = 0;
+ hw->reset.stage = RESET_STAGE_RESTORE;
+ rte_eal_alarm_set(SWITCH_CONTEXT_US,
+ hw->reset.ops->reset_service, hns);
+ return -EAGAIN;
+ }
+ if (hw->reset.stage == RESET_STAGE_RESTORE) {
+ rte_spinlock_lock(&hw->lock);
+ ret = hw->reset.ops->restore_conf(hns);
+ rte_spinlock_unlock(&hw->lock);
+ gettimeofday(&tv, NULL);
+ if (ret) {
+ hns3_warn(hw,
+ "Reset step6 restore fail=%d retries=%d",
+ ret, hw->reset.retries);
+ goto err;
+ }
+ hns3_warn(hw, "Reset step6 restore success time=%ld.%.6ld",
+ tv.tv_sec, tv.tv_usec);
+ hw->reset.retries = 0;
+ hw->reset.stage = RESET_STAGE_DONE;
+ }
+ if (hw->reset.stage == RESET_STAGE_DONE) {
+ /* IMP will wait ready flag before reset */
+ hns3_notify_reset_ready(hw, false);
+ hns3_clear_reset_level(hw, &hw->reset.pending);
+ rte_atomic16_clear(&hns->hw.reset.resetting);
+ hw->reset.attempts = 0;
+ hw->reset.stats.success_cnt++;
+ hw->reset.stage = RESET_STAGE_NONE;
+ hw->reset.ops->start_service(hns);
+ gettimeofday(&tv, NULL);
+ timersub(&tv, &hw->reset.start_time, &tv_delta);
+ hns3_warn(hw, "%s reset done fail_cnt:%" PRIx64
+ " success_cnt:%" PRIx64 " global_cnt:%" PRIx64
+ " imp_cnt:%" PRIx64 " request_cnt:%" PRIx64
+ " exec_cnt:%" PRIx64 " merge_cnt:%" PRIx64,
+ reset_string[hw->reset.level],
+ hw->reset.stats.fail_cnt, hw->reset.stats.success_cnt,
+ hw->reset.stats.global_cnt, hw->reset.stats.imp_cnt,
+ hw->reset.stats.request_cnt, hw->reset.stats.exec_cnt,
+ hw->reset.stats.merge_cnt);
+ hns3_warn(hw,
+ "%s reset done delta %ld ms time=%ld.%.6ld",
+ reset_string[hw->reset.level],
+ tv_delta.tv_sec * MSEC_PER_SEC +
+ tv_delta.tv_usec / USEC_PER_MSEC,
+ tv.tv_sec, tv.tv_usec);
+ hw->reset.level = HNS3_NONE_RESET;
+ }
+ return 0;
+
+err:
+ if (ret == -ETIME) {
+ hw->reset.retries++;
+ if (hw->reset.retries < TIMEOUT_RETRIES_CNT) {
+ rte_eal_alarm_set(HNS3_RESET_SYNC_US,
+ hw->reset.ops->reset_service, hns);
+ return -EAGAIN;
+ }
+ }
+ hw->reset.retries = 0;
+ return -EIO;
+}
+
+/*
+ * There are three scenarios as follows:
+ * When the reset is not in progress, the reset process starts.
+ * During the reset process, if the reset level has not changed,
+ * the reset process continues; otherwise, the reset process is aborted.
+ * hw->reset.level new_level action
+ * HNS3_NONE_RESET HNS3_XXXX_RESET start reset
+ * HNS3_XXXX_RESET HNS3_XXXX_RESET continue reset
+ * HNS3_LOW_RESET HNS3_HIGH_RESET abort
+ */
+int
+hns3_reset_process(struct hns3_adapter *hns, enum hns3_reset_level new_level)
+{
+ struct hns3_hw *hw = &hns->hw;
+ struct timeval tv_delta;
+ struct timeval tv;
+ int ret;
+
+ if (hw->reset.level == HNS3_NONE_RESET) {
+ hw->reset.level = new_level;
+ hw->reset.stats.exec_cnt++;
+ gettimeofday(&hw->reset.start_time, NULL);
+ hns3_warn(hw, "Start %s reset time=%ld.%.6ld",
+ reset_string[hw->reset.level],
+ hw->reset.start_time.tv_sec,
+ hw->reset.start_time.tv_usec);
+ }
+
+ if (is_reset_pending(hns)) {
+ gettimeofday(&tv, NULL);
+ hns3_warn(hw,
+ "%s reset is aborted by high level time=%ld.%.6ld",
+ reset_string[hw->reset.level], tv.tv_sec, tv.tv_usec);
+ if (hw->reset.wait_data->result == HNS3_WAIT_REQUEST)
+ rte_eal_alarm_cancel(hns3_wait_callback,
+ hw->reset.wait_data);
+ ret = -EBUSY;
+ goto err;
+ }
+
+ ret = hns3_reset_pre(hns);
+ if (ret)
+ goto err;
+
+ if (hw->reset.stage == RESET_STAGE_REQ_HW_RESET) {
+ ret = hns3_reset_req_hw_reset(hns);
+ if (ret == -EAGAIN)
+ return ret;
+ gettimeofday(&tv, NULL);
+ hns3_warn(hw,
+ "Reset step3 request IMP reset success time=%ld.%.6ld",
+ tv.tv_sec, tv.tv_usec);
+ hw->reset.stage = RESET_STAGE_WAIT;
+ hw->reset.wait_data->result = HNS3_WAIT_UNKNOWN;
+ }
+ if (hw->reset.stage == RESET_STAGE_WAIT) {
+ ret = hw->reset.ops->wait_hardware_ready(hns);
+ if (ret)
+ goto retry;
+ gettimeofday(&tv, NULL);
+ hns3_warn(hw, "Reset step4 reset wait success time=%ld.%.6ld",
+ tv.tv_sec, tv.tv_usec);
+ hw->reset.stage = RESET_STAGE_DEV_INIT;
+ }
+
+ ret = hns3_reset_post(hns);
+ if (ret)
+ goto retry;
+
+ return 0;
+retry:
+ if (ret == -EAGAIN)
+ return ret;
+err:
+ hns3_clear_reset_level(hw, &hw->reset.pending);
+ if (hns3_reset_err_handle(hns)) {
+ hw->reset.stage = RESET_STAGE_PREWAIT;
+ hns3_schedule_reset(hns);
+ } else {
+ rte_spinlock_lock(&hw->lock);
+ if (hw->reset.mbuf_deferred_free) {
+ hns3_dev_release_mbufs(hns);
+ hw->reset.mbuf_deferred_free = false;
+ }
+ rte_spinlock_unlock(&hw->lock);
+ rte_atomic16_clear(&hns->hw.reset.resetting);
+ hw->reset.stage = RESET_STAGE_NONE;
+ gettimeofday(&tv, NULL);
+ timersub(&tv, &hw->reset.start_time, &tv_delta);
+ hns3_warn(hw, "%s reset fail delta %ld ms time=%ld.%.6ld",
+ reset_string[hw->reset.level],
+ tv_delta.tv_sec * MSEC_PER_SEC +
+ tv_delta.tv_usec / USEC_PER_MSEC,
+ tv.tv_sec, tv.tv_usec);
+ hw->reset.level = HNS3_NONE_RESET;
+ }
+
+ return -EIO;
+}
+
+/*
+ * The reset process can only be terminated after handshake with IMP(step3),
+ * so that IMP can complete the reset process normally.
+ */
+void
+hns3_reset_abort(struct hns3_adapter *hns)
+{
+ struct hns3_hw *hw = &hns->hw;
+ struct timeval tv;
+ int i;
+
+ for (i = 0; i < HNS3_QUIT_RESET_CNT; i++) {
+ if (hw->reset.level == HNS3_NONE_RESET)
+ break;
+ rte_delay_ms(HNS3_QUIT_RESET_DELAY_MS);
+ }
+
+ /* IMP no longer waiting the ready flag */
+ hns3_notify_reset_ready(hw, true);
+
+ rte_eal_alarm_cancel(hw->reset.ops->reset_service, hns);
+ rte_eal_alarm_cancel(hns3_wait_callback, hw->reset.wait_data);
+
+ if (hw->reset.level != HNS3_NONE_RESET) {
+ gettimeofday(&tv, NULL);
+ hns3_err(hw, "Failed to terminate reset: %s time=%ld.%.6ld",
+ reset_string[hw->reset.level], tv.tv_sec, tv.tv_usec);
+ }
+}
git.droids-corp.org / dpdk.git / blobdiff