forked from ~ljy/RK356X_SDK_RELEASE
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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c
....@@ -89,7 +89,8 @@
8989 
9090 static u64 read_internal_timer(const struct cyclecounter *cc)
9191 {
92
-	struct mlx5_clock *clock = container_of(cc, struct mlx5_clock, cycles);
92
+	struct mlx5_timer *timer = container_of(cc, struct mlx5_timer, cycles);
93
+	struct mlx5_clock *clock = container_of(timer, struct mlx5_clock, timer);
9394 	struct mlx5_core_dev *mdev = container_of(clock, struct mlx5_core_dev,
9495 						  clock);
9596 
....@@ -100,6 +101,7 @@
100101 {
101102 	struct mlx5_ib_clock_info *clock_info = mdev->clock_info;
102103 	struct mlx5_clock *clock = &mdev->clock;
104
+	struct mlx5_timer *timer;
103105 	u32 sign;
104106 
105107 	if (!clock_info)
....@@ -109,10 +111,11 @@
109111 	smp_store_mb(clock_info->sign,
110112 		     sign | MLX5_IB_CLOCK_INFO_KERNEL_UPDATING);
111113 
112
-	clock_info->cycles = clock->tc.cycle_last;
113
-	clock_info->mult   = clock->cycles.mult;
114
-	clock_info->nsec   = clock->tc.nsec;
115
-	clock_info->frac   = clock->tc.frac;
114
+	timer = &clock->timer;
115
+	clock_info->cycles = timer->tc.cycle_last;
116
+	clock_info->mult   = timer->cycles.mult;
117
+	clock_info->nsec   = timer->tc.nsec;
118
+	clock_info->frac   = timer->tc.frac;
116119 
117120 	smp_store_release(&clock_info->sign,
118121 			  sign + MLX5_IB_CLOCK_INFO_KERNEL_UPDATING * 2);
....@@ -151,28 +154,37 @@
151154 {
152155 	struct delayed_work *dwork = to_delayed_work(work);
153156 	struct mlx5_core_dev *mdev;
157
+	struct mlx5_timer *timer;
154158 	struct mlx5_clock *clock;
155159 	unsigned long flags;
156160 
157
-	clock = container_of(dwork, struct mlx5_clock, overflow_work);
161
+	timer = container_of(dwork, struct mlx5_timer, overflow_work);
162
+	clock = container_of(timer, struct mlx5_clock, timer);
158163 	mdev = container_of(clock, struct mlx5_core_dev, clock);
164
+
165
+	if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
166
+		goto out;
167
+
159168 	write_seqlock_irqsave(&clock->lock, flags);
160
-	timecounter_read(&clock->tc);
169
+	timecounter_read(&timer->tc);
161170 	mlx5_update_clock_info_page(mdev);
162171 	write_sequnlock_irqrestore(&clock->lock, flags);
163
-	schedule_delayed_work(&clock->overflow_work, clock->overflow_period);
172
+
173
+out:
174
+	schedule_delayed_work(&timer->overflow_work, timer->overflow_period);
164175 }
165176 
166177 static int mlx5_ptp_settime(struct ptp_clock_info *ptp, const struct timespec64 *ts)
167178 {
168179 	struct mlx5_clock *clock = container_of(ptp, struct mlx5_clock, ptp_info);
180
+	struct mlx5_timer *timer = &clock->timer;
169181 	u64 ns = timespec64_to_ns(ts);
170182 	struct mlx5_core_dev *mdev;
171183 	unsigned long flags;
172184 
173185 	mdev = container_of(clock, struct mlx5_core_dev, clock);
174186 	write_seqlock_irqsave(&clock->lock, flags);
175
-	timecounter_init(&clock->tc, &clock->cycles, ns);
187
+	timecounter_init(&timer->tc, &timer->cycles, ns);
176188 	mlx5_update_clock_info_page(mdev);
177189 	write_sequnlock_irqrestore(&clock->lock, flags);
178190 
....@@ -183,6 +195,7 @@
183195 			     struct ptp_system_timestamp *sts)
184196 {
185197 	struct mlx5_clock *clock = container_of(ptp, struct mlx5_clock, ptp_info);
198
+	struct mlx5_timer *timer = &clock->timer;
186199 	struct mlx5_core_dev *mdev;
187200 	unsigned long flags;
188201 	u64 cycles, ns;
....@@ -190,7 +203,7 @@
190203 	mdev = container_of(clock, struct mlx5_core_dev, clock);
191204 	write_seqlock_irqsave(&clock->lock, flags);
192205 	cycles = mlx5_read_internal_timer(mdev, sts);
193
-	ns = timecounter_cyc2time(&clock->tc, cycles);
206
+	ns = timecounter_cyc2time(&timer->tc, cycles);
194207 	write_sequnlock_irqrestore(&clock->lock, flags);
195208 
196209 	*ts = ns_to_timespec64(ns);
....@@ -201,12 +214,13 @@
201214 static int mlx5_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
202215 {
203216 	struct mlx5_clock *clock = container_of(ptp, struct mlx5_clock, ptp_info);
217
+	struct mlx5_timer *timer = &clock->timer;
204218 	struct mlx5_core_dev *mdev;
205219 	unsigned long flags;
206220 
207221 	mdev = container_of(clock, struct mlx5_core_dev, clock);
208222 	write_seqlock_irqsave(&clock->lock, flags);
209
-	timecounter_adjtime(&clock->tc, delta);
223
+	timecounter_adjtime(&timer->tc, delta);
210224 	mlx5_update_clock_info_page(mdev);
211225 	write_sequnlock_irqrestore(&clock->lock, flags);
212226 
....@@ -216,27 +230,27 @@
216230 static int mlx5_ptp_adjfreq(struct ptp_clock_info *ptp, s32 delta)
217231 {
218232 	struct mlx5_clock *clock = container_of(ptp, struct mlx5_clock, ptp_info);
233
+	struct mlx5_timer *timer = &clock->timer;
219234 	struct mlx5_core_dev *mdev;
220235 	unsigned long flags;
221236 	int neg_adj = 0;
222237 	u32 diff;
223238 	u64 adj;
224239 
225
-
226240 	if (delta < 0) {
227241 		neg_adj = 1;
228242 		delta = -delta;
229243 	}
230244 
231
-	adj = clock->nominal_c_mult;
245
+	adj = timer->nominal_c_mult;
232246 	adj *= delta;
233247 	diff = div_u64(adj, 1000000000ULL);
234248 
235249 	mdev = container_of(clock, struct mlx5_core_dev, clock);
236250 	write_seqlock_irqsave(&clock->lock, flags);
237
-	timecounter_read(&clock->tc);
238
-	clock->cycles.mult = neg_adj ? clock->nominal_c_mult - diff :
239
-				       clock->nominal_c_mult + diff;
251
+	timecounter_read(&timer->tc);
252
+	timer->cycles.mult = neg_adj ? timer->nominal_c_mult - diff :
253
+				       timer->nominal_c_mult + diff;
240254 	mlx5_update_clock_info_page(mdev);
241255 	write_sequnlock_irqrestore(&clock->lock, flags);
242256 
....@@ -313,6 +327,7 @@
313327 			container_of(ptp, struct mlx5_clock, ptp_info);
314328 	struct mlx5_core_dev *mdev =
315329 			container_of(clock, struct mlx5_core_dev, clock);
330
+	struct mlx5_timer *timer = &clock->timer;
316331 	u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
317332 	u64 nsec_now, nsec_delta, time_stamp = 0;
318333 	u64 cycles_now, cycles_delta;
....@@ -355,10 +370,10 @@
355370 		ns = timespec64_to_ns(&ts);
356371 		cycles_now = mlx5_read_internal_timer(mdev, NULL);
357372 		write_seqlock_irqsave(&clock->lock, flags);
358
-		nsec_now = timecounter_cyc2time(&clock->tc, cycles_now);
373
+		nsec_now = timecounter_cyc2time(&timer->tc, cycles_now);
359374 		nsec_delta = ns - nsec_now;
360
-		cycles_delta = div64_u64(nsec_delta << clock->cycles.shift,
361
-					 clock->cycles.mult);
375
+		cycles_delta = div64_u64(nsec_delta << timer->cycles.shift,
376
+					 timer->cycles.mult);
362377 		write_sequnlock_irqrestore(&clock->lock, flags);
363378 		time_stamp = cycles_now + cycles_delta;
364379 		field_select = MLX5_MTPPS_FS_PIN_MODE |
....@@ -440,7 +455,7 @@
440455 static const struct ptp_clock_info mlx5_ptp_clock_info = {
441456 	.owner		= THIS_MODULE,
442457 	.name		= "mlx5_ptp",
443
-	.max_adj	= 100000000,
458
+	.max_adj	= 50000000,
444459 	.n_alarm	= 0,
445460 	.n_ext_ts	= 0,
446461 	.n_per_out	= 0,
....@@ -541,6 +556,7 @@
541556 			  unsigned long type, void *data)
542557 {
543558 	struct mlx5_clock *clock = mlx5_nb_cof(nb, struct mlx5_clock, pps_nb);
559
+	struct mlx5_timer *timer = &clock->timer;
544560 	struct ptp_clock_event ptp_event;
545561 	u64 cycles_now, cycles_delta;
546562 	u64 nsec_now, nsec_delta, ns;
....@@ -575,10 +591,10 @@
575591 		ts.tv_nsec = 0;
576592 		ns = timespec64_to_ns(&ts);
577593 		write_seqlock_irqsave(&clock->lock, flags);
578
-		nsec_now = timecounter_cyc2time(&clock->tc, cycles_now);
594
+		nsec_now = timecounter_cyc2time(&timer->tc, cycles_now);
579595 		nsec_delta = ns - nsec_now;
580
-		cycles_delta = div64_u64(nsec_delta << clock->cycles.shift,
581
-					 clock->cycles.mult);
596
+		cycles_delta = div64_u64(nsec_delta << timer->cycles.shift,
597
+					 timer->cycles.mult);
582598 		clock->pps_info.start[pin] = cycles_now + cycles_delta;
583599 		write_sequnlock_irqrestore(&clock->lock, flags);
584600 		schedule_work(&clock->pps_info.out_work);
....@@ -591,29 +607,32 @@
591607 	return NOTIFY_OK;
592608 }
593609 
594
-void mlx5_init_clock(struct mlx5_core_dev *mdev)
610
+static void mlx5_timecounter_init(struct mlx5_core_dev *mdev)
595611 {
596612 	struct mlx5_clock *clock = &mdev->clock;
597
-	u64 overflow_cycles;
598
-	u64 ns;
599
-	u64 frac = 0;
613
+	struct mlx5_timer *timer = &clock->timer;
600614 	u32 dev_freq;
601615 
602616 	dev_freq = MLX5_CAP_GEN(mdev, device_frequency_khz);
603
-	if (!dev_freq) {
604
-		mlx5_core_warn(mdev, "invalid device_frequency_khz, aborting HW clock init\n");
605
-		return;
606
-	}
607
-	seqlock_init(&clock->lock);
608
-	clock->cycles.read = read_internal_timer;
609
-	clock->cycles.shift = MLX5_CYCLES_SHIFT;
610
-	clock->cycles.mult = clocksource_khz2mult(dev_freq,
611
-						  clock->cycles.shift);
612
-	clock->nominal_c_mult = clock->cycles.mult;
613
-	clock->cycles.mask = CLOCKSOURCE_MASK(41);
617
+	timer->cycles.read = read_internal_timer;
618
+	timer->cycles.shift = MLX5_CYCLES_SHIFT;
619
+	timer->cycles.mult = clocksource_khz2mult(dev_freq,
620
+						  timer->cycles.shift);
621
+	timer->nominal_c_mult = timer->cycles.mult;
622
+	timer->cycles.mask = CLOCKSOURCE_MASK(41);
614623 
615
-	timecounter_init(&clock->tc, &clock->cycles,
624
+	timecounter_init(&timer->tc, &timer->cycles,
616625 			 ktime_to_ns(ktime_get_real()));
626
+}
627
+
628
+static void mlx5_init_overflow_period(struct mlx5_clock *clock)
629
+{
630
+	struct mlx5_core_dev *mdev = container_of(clock, struct mlx5_core_dev, clock);
631
+	struct mlx5_ib_clock_info *clock_info = mdev->clock_info;
632
+	struct mlx5_timer *timer = &clock->timer;
633
+	u64 overflow_cycles;
634
+	u64 frac = 0;
635
+	u64 ns;
617636 
618637 	/* Calculate period in seconds to call the overflow watchdog - to make
619638 	 * sure counter is checked at least twice every wrap around.
....@@ -622,32 +641,63 @@
622641 	 * multiplied by clock multiplier where the result doesn't exceed
623642 	 * 64bits.
624643 	 */
625
-	overflow_cycles = div64_u64(~0ULL >> 1, clock->cycles.mult);
626
-	overflow_cycles = min(overflow_cycles, div_u64(clock->cycles.mask, 3));
644
+	overflow_cycles = div64_u64(~0ULL >> 1, timer->cycles.mult);
645
+	overflow_cycles = min(overflow_cycles, div_u64(timer->cycles.mask, 3));
627646 
628
-	ns = cyclecounter_cyc2ns(&clock->cycles, overflow_cycles,
647
+	ns = cyclecounter_cyc2ns(&timer->cycles, overflow_cycles,
629648 				 frac, &frac);
630649 	do_div(ns, NSEC_PER_SEC / HZ);
631
-	clock->overflow_period = ns;
650
+	timer->overflow_period = ns;
632651 
633
-	mdev->clock_info =
634
-		(struct mlx5_ib_clock_info *)get_zeroed_page(GFP_KERNEL);
635
-	if (mdev->clock_info) {
636
-		mdev->clock_info->nsec = clock->tc.nsec;
637
-		mdev->clock_info->cycles = clock->tc.cycle_last;
638
-		mdev->clock_info->mask = clock->cycles.mask;
639
-		mdev->clock_info->mult = clock->nominal_c_mult;
640
-		mdev->clock_info->shift = clock->cycles.shift;
641
-		mdev->clock_info->frac = clock->tc.frac;
642
-		mdev->clock_info->overflow_period = clock->overflow_period;
652
+	INIT_DELAYED_WORK(&timer->overflow_work, mlx5_timestamp_overflow);
653
+	if (timer->overflow_period)
654
+		schedule_delayed_work(&timer->overflow_work, 0);
655
+	else
656
+		mlx5_core_warn(mdev,
657
+			       "invalid overflow period, overflow_work is not scheduled\n");
658
+
659
+	if (clock_info)
660
+		clock_info->overflow_period = timer->overflow_period;
661
+}
662
+
663
+static void mlx5_init_clock_info(struct mlx5_core_dev *mdev)
664
+{
665
+	struct mlx5_clock *clock = &mdev->clock;
666
+	struct mlx5_ib_clock_info *info;
667
+	struct mlx5_timer *timer;
668
+
669
+	mdev->clock_info = (struct mlx5_ib_clock_info *)get_zeroed_page(GFP_KERNEL);
670
+	if (!mdev->clock_info) {
671
+		mlx5_core_warn(mdev, "Failed to allocate IB clock info page\n");
672
+		return;
643673 	}
644674 
675
+	info = mdev->clock_info;
676
+	timer = &clock->timer;
677
+
678
+	info->nsec = timer->tc.nsec;
679
+	info->cycles = timer->tc.cycle_last;
680
+	info->mask = timer->cycles.mask;
681
+	info->mult = timer->nominal_c_mult;
682
+	info->shift = timer->cycles.shift;
683
+	info->frac = timer->tc.frac;
684
+}
685
+
686
+void mlx5_init_clock(struct mlx5_core_dev *mdev)
687
+{
688
+	struct mlx5_clock *clock = &mdev->clock;
689
+
690
+	if (!MLX5_CAP_GEN(mdev, device_frequency_khz)) {
691
+		mlx5_core_warn(mdev, "invalid device_frequency_khz, aborting HW clock init\n");
692
+		return;
693
+	}
694
+
695
+	seqlock_init(&clock->lock);
696
+
697
+	mlx5_timecounter_init(mdev);
698
+	mlx5_init_clock_info(mdev);
699
+	mlx5_init_overflow_period(clock);
645700 	INIT_WORK(&clock->pps_info.out_work, mlx5_pps_out);
646
-	INIT_DELAYED_WORK(&clock->overflow_work, mlx5_timestamp_overflow);
647
-	if (clock->overflow_period)
648
-		schedule_delayed_work(&clock->overflow_work, 0);
649
-	else
650
-		mlx5_core_warn(mdev, "invalid overflow period, overflow_work is not scheduled\n");
651701 
652702 	/* Configure the PHC */
653703 	clock->ptp_info = mlx5_ptp_clock_info;
....@@ -684,7 +734,7 @@
684734 	}
685735 
686736 	cancel_work_sync(&clock->pps_info.out_work);
687
-	cancel_delayed_work_sync(&clock->overflow_work);
737
+	cancel_delayed_work_sync(&clock->timer.overflow_work);
688738 
689739 	if (mdev->clock_info) {
690740 		free_page((unsigned long)mdev->clock_info);