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1/* SPDX-License-Identifier: GPL-2.0+ */
2/* Copyright (C) 2018 Microchip Technology Inc. */
3
4#include <linux/netdevice.h>
5
6#include <linux/ptp_clock_kernel.h>
7#include <linux/module.h>
8#include <linux/pci.h>
9#include <linux/net_tstamp.h>
10#include "lan743x_main.h"
11
12#include "lan743x_ptp.h"
13
14#define LAN743X_LED0_ENABLE 20 /* LED0 offset in HW_CFG */
15#define LAN743X_LED_ENABLE(pin) BIT(LAN743X_LED0_ENABLE + (pin))
16
17#define LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB (31249999)
18#define LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM (2047999934)
19
20static bool lan743x_ptp_is_enabled(struct lan743x_adapter *adapter);
21static void lan743x_ptp_enable(struct lan743x_adapter *adapter);
22static void lan743x_ptp_disable(struct lan743x_adapter *adapter);
23static void lan743x_ptp_reset(struct lan743x_adapter *adapter);
24static void lan743x_ptp_clock_set(struct lan743x_adapter *adapter,
25 u32 seconds, u32 nano_seconds,
26 u32 sub_nano_seconds);
27
28static int lan743x_get_channel(u32 ch_map)
29{
30 int idx;
31
32 for (idx = 0; idx < 32; idx++) {
33 if (ch_map & (0x1 << idx))
34 return idx;
35 }
36
37 return -EINVAL;
38}
39
40int lan743x_gpio_init(struct lan743x_adapter *adapter)
41{
42 struct lan743x_gpio *gpio = &adapter->gpio;
43
44 spin_lock_init(&gpio->gpio_lock);
45
46 gpio->gpio_cfg0 = 0; /* set all direction to input, data = 0 */
47 gpio->gpio_cfg1 = 0x0FFF0000;/* disable all gpio, set to open drain */
48 gpio->gpio_cfg2 = 0;/* set all to 1588 low polarity level */
49 gpio->gpio_cfg3 = 0;/* disable all 1588 output */
50 lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
51 lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
52 lan743x_csr_write(adapter, GPIO_CFG2, gpio->gpio_cfg2);
53 lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3);
54
55 return 0;
56}
57
58static void lan743x_ptp_wait_till_cmd_done(struct lan743x_adapter *adapter,
59 u32 bit_mask)
60{
61 int timeout = PTP_CMD_CTL_TIMEOUT_CNT;
62 u32 data = 0;
63
64 while (timeout &&
65 (data = (lan743x_csr_read(adapter, PTP_CMD_CTL) &
66 bit_mask))) {
67 usleep_range(1000, 20000);
68 timeout--;
69 }
70 if (data) {
71 netif_err(adapter, drv, adapter->netdev,
72 "timeout waiting for cmd to be done, cmd = 0x%08X\n",
73 bit_mask);
74 }
75}
76
77static void lan743x_ptp_tx_ts_enqueue_ts(struct lan743x_adapter *adapter,
78 u32 seconds, u32 nano_seconds,
79 u32 header)
80{
81 struct lan743x_ptp *ptp = &adapter->ptp;
82
83 spin_lock_bh(&ptp->tx_ts_lock);
84 if (ptp->tx_ts_queue_size < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
85 ptp->tx_ts_seconds_queue[ptp->tx_ts_queue_size] = seconds;
86 ptp->tx_ts_nseconds_queue[ptp->tx_ts_queue_size] = nano_seconds;
87 ptp->tx_ts_header_queue[ptp->tx_ts_queue_size] = header;
88 ptp->tx_ts_queue_size++;
89 } else {
90 netif_err(adapter, drv, adapter->netdev,
91 "tx ts queue overflow\n");
92 }
93 spin_unlock_bh(&ptp->tx_ts_lock);
94}
95
96static void lan743x_ptp_tx_ts_complete(struct lan743x_adapter *adapter)
97{
98 struct lan743x_ptp *ptp = &adapter->ptp;
99 struct skb_shared_hwtstamps tstamps;
100 u32 header, nseconds, seconds;
101 bool ignore_sync = false;
102 struct sk_buff *skb;
103 int c, i;
104
105 spin_lock_bh(&ptp->tx_ts_lock);
106 c = ptp->tx_ts_skb_queue_size;
107
108 if (c > ptp->tx_ts_queue_size)
109 c = ptp->tx_ts_queue_size;
110 if (c <= 0)
111 goto done;
112
113 for (i = 0; i < c; i++) {
114 ignore_sync = ((ptp->tx_ts_ignore_sync_queue &
115 BIT(i)) != 0);
116 skb = ptp->tx_ts_skb_queue[i];
117 nseconds = ptp->tx_ts_nseconds_queue[i];
118 seconds = ptp->tx_ts_seconds_queue[i];
119 header = ptp->tx_ts_header_queue[i];
120
121 memset(&tstamps, 0, sizeof(tstamps));
122 tstamps.hwtstamp = ktime_set(seconds, nseconds);
123 if (!ignore_sync ||
124 ((header & PTP_TX_MSG_HEADER_MSG_TYPE_) !=
125 PTP_TX_MSG_HEADER_MSG_TYPE_SYNC_))
126 skb_tstamp_tx(skb, &tstamps);
127
128 dev_kfree_skb(skb);
129
130 ptp->tx_ts_skb_queue[i] = NULL;
131 ptp->tx_ts_seconds_queue[i] = 0;
132 ptp->tx_ts_nseconds_queue[i] = 0;
133 ptp->tx_ts_header_queue[i] = 0;
134 }
135
136 /* shift queue */
137 ptp->tx_ts_ignore_sync_queue >>= c;
138 for (i = c; i < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS; i++) {
139 ptp->tx_ts_skb_queue[i - c] = ptp->tx_ts_skb_queue[i];
140 ptp->tx_ts_seconds_queue[i - c] = ptp->tx_ts_seconds_queue[i];
141 ptp->tx_ts_nseconds_queue[i - c] = ptp->tx_ts_nseconds_queue[i];
142 ptp->tx_ts_header_queue[i - c] = ptp->tx_ts_header_queue[i];
143
144 ptp->tx_ts_skb_queue[i] = NULL;
145 ptp->tx_ts_seconds_queue[i] = 0;
146 ptp->tx_ts_nseconds_queue[i] = 0;
147 ptp->tx_ts_header_queue[i] = 0;
148 }
149 ptp->tx_ts_skb_queue_size -= c;
150 ptp->tx_ts_queue_size -= c;
151done:
152 ptp->pending_tx_timestamps -= c;
153 spin_unlock_bh(&ptp->tx_ts_lock);
154}
155
156static int lan743x_ptp_reserve_event_ch(struct lan743x_adapter *adapter,
157 int event_channel)
158{
159 struct lan743x_ptp *ptp = &adapter->ptp;
160 int result = -ENODEV;
161
162 mutex_lock(&ptp->command_lock);
163 if (!(test_bit(event_channel, &ptp->used_event_ch))) {
164 ptp->used_event_ch |= BIT(event_channel);
165 result = event_channel;
166 } else {
167 netif_warn(adapter, drv, adapter->netdev,
168 "attempted to reserved a used event_channel = %d\n",
169 event_channel);
170 }
171 mutex_unlock(&ptp->command_lock);
172 return result;
173}
174
175static void lan743x_ptp_release_event_ch(struct lan743x_adapter *adapter,
176 int event_channel)
177{
178 struct lan743x_ptp *ptp = &adapter->ptp;
179
180 mutex_lock(&ptp->command_lock);
181 if (test_bit(event_channel, &ptp->used_event_ch)) {
182 ptp->used_event_ch &= ~BIT(event_channel);
183 } else {
184 netif_warn(adapter, drv, adapter->netdev,
185 "attempted release on a not used event_channel = %d\n",
186 event_channel);
187 }
188 mutex_unlock(&ptp->command_lock);
189}
190
191static void lan743x_ptp_clock_get(struct lan743x_adapter *adapter,
192 u32 *seconds, u32 *nano_seconds,
193 u32 *sub_nano_seconds);
194static void lan743x_ptp_io_clock_get(struct lan743x_adapter *adapter,
195 u32 *sec, u32 *nsec, u32 *sub_nsec);
196static void lan743x_ptp_clock_step(struct lan743x_adapter *adapter,
197 s64 time_step_ns);
198
199static void lan743x_led_mux_enable(struct lan743x_adapter *adapter,
200 int pin, bool enable)
201{
202 struct lan743x_ptp *ptp = &adapter->ptp;
203
204 if (ptp->leds_multiplexed &&
205 ptp->led_enabled[pin]) {
206 u32 val = lan743x_csr_read(adapter, HW_CFG);
207
208 if (enable)
209 val |= LAN743X_LED_ENABLE(pin);
210 else
211 val &= ~LAN743X_LED_ENABLE(pin);
212
213 lan743x_csr_write(adapter, HW_CFG, val);
214 }
215}
216
217static void lan743x_led_mux_save(struct lan743x_adapter *adapter)
218{
219 struct lan743x_ptp *ptp = &adapter->ptp;
220 u32 id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_;
221
222 if (id_rev == ID_REV_ID_LAN7430_) {
223 int i;
224 u32 val = lan743x_csr_read(adapter, HW_CFG);
225
226 for (i = 0; i < LAN7430_N_LED; i++) {
227 bool led_enabled = (val & LAN743X_LED_ENABLE(i)) != 0;
228
229 ptp->led_enabled[i] = led_enabled;
230 }
231 ptp->leds_multiplexed = true;
232 } else {
233 ptp->leds_multiplexed = false;
234 }
235}
236
237static void lan743x_led_mux_restore(struct lan743x_adapter *adapter)
238{
239 u32 id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_;
240
241 if (id_rev == ID_REV_ID_LAN7430_) {
242 int i;
243
244 for (i = 0; i < LAN7430_N_LED; i++)
245 lan743x_led_mux_enable(adapter, i, true);
246 }
247}
248
249static int lan743x_gpio_rsrv_ptp_out(struct lan743x_adapter *adapter,
250 int pin, int event_channel)
251{
252 struct lan743x_gpio *gpio = &adapter->gpio;
253 unsigned long irq_flags = 0;
254 int bit_mask = BIT(pin);
255 int ret = -EBUSY;
256
257 spin_lock_irqsave(&gpio->gpio_lock, irq_flags);
258
259 if (!(gpio->used_bits & bit_mask)) {
260 gpio->used_bits |= bit_mask;
261 gpio->output_bits |= bit_mask;
262 gpio->ptp_bits |= bit_mask;
263
264 /* assign pin to GPIO function */
265 lan743x_led_mux_enable(adapter, pin, false);
266
267 /* set as output, and zero initial value */
268 gpio->gpio_cfg0 |= GPIO_CFG0_GPIO_DIR_BIT_(pin);
269 gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DATA_BIT_(pin);
270 lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
271
272 /* enable gpio, and set buffer type to push pull */
273 gpio->gpio_cfg1 &= ~GPIO_CFG1_GPIOEN_BIT_(pin);
274 gpio->gpio_cfg1 |= GPIO_CFG1_GPIOBUF_BIT_(pin);
275 lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
276
277 /* set 1588 polarity to high */
278 gpio->gpio_cfg2 |= GPIO_CFG2_1588_POL_BIT_(pin);
279 lan743x_csr_write(adapter, GPIO_CFG2, gpio->gpio_cfg2);
280
281 if (event_channel == 0) {
282 /* use channel A */
283 gpio->gpio_cfg3 &= ~GPIO_CFG3_1588_CH_SEL_BIT_(pin);
284 } else {
285 /* use channel B */
286 gpio->gpio_cfg3 |= GPIO_CFG3_1588_CH_SEL_BIT_(pin);
287 }
288 gpio->gpio_cfg3 |= GPIO_CFG3_1588_OE_BIT_(pin);
289 lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3);
290
291 ret = pin;
292 }
293 spin_unlock_irqrestore(&gpio->gpio_lock, irq_flags);
294 return ret;
295}
296
297static void lan743x_gpio_release(struct lan743x_adapter *adapter, int pin)
298{
299 struct lan743x_gpio *gpio = &adapter->gpio;
300 unsigned long irq_flags = 0;
301 int bit_mask = BIT(pin);
302
303 spin_lock_irqsave(&gpio->gpio_lock, irq_flags);
304 if (gpio->used_bits & bit_mask) {
305 gpio->used_bits &= ~bit_mask;
306 if (gpio->output_bits & bit_mask) {
307 gpio->output_bits &= ~bit_mask;
308
309 if (gpio->ptp_bits & bit_mask) {
310 gpio->ptp_bits &= ~bit_mask;
311 /* disable ptp output */
312 gpio->gpio_cfg3 &= ~GPIO_CFG3_1588_OE_BIT_(pin);
313 lan743x_csr_write(adapter, GPIO_CFG3,
314 gpio->gpio_cfg3);
315 }
316 /* release gpio output */
317
318 /* disable gpio */
319 gpio->gpio_cfg1 |= GPIO_CFG1_GPIOEN_BIT_(pin);
320 gpio->gpio_cfg1 &= ~GPIO_CFG1_GPIOBUF_BIT_(pin);
321 lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
322
323 /* reset back to input */
324 gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DIR_BIT_(pin);
325 gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DATA_BIT_(pin);
326 lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
327
328 /* assign pin to original function */
329 lan743x_led_mux_enable(adapter, pin, true);
330 }
331 }
332 spin_unlock_irqrestore(&gpio->gpio_lock, irq_flags);
333}
334
335static int lan743x_ptpci_adjfine(struct ptp_clock_info *ptpci, long scaled_ppm)
336{
337 struct lan743x_ptp *ptp =
338 container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
339 struct lan743x_adapter *adapter =
340 container_of(ptp, struct lan743x_adapter, ptp);
341 u32 lan743x_rate_adj = 0;
342 u64 u64_delta;
343
344 if ((scaled_ppm < (-LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM)) ||
345 scaled_ppm > LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM) {
346 return -EINVAL;
347 }
348
349 /* diff_by_scaled_ppm returns true if the difference is negative */
350 if (diff_by_scaled_ppm(1ULL << 35, scaled_ppm, &u64_delta))
351 lan743x_rate_adj = (u32)u64_delta;
352 else
353 lan743x_rate_adj = (u32)u64_delta | PTP_CLOCK_RATE_ADJ_DIR_;
354
355 lan743x_csr_write(adapter, PTP_CLOCK_RATE_ADJ,
356 lan743x_rate_adj);
357
358 return 0;
359}
360
361static int lan743x_ptpci_adjtime(struct ptp_clock_info *ptpci, s64 delta)
362{
363 struct lan743x_ptp *ptp =
364 container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
365 struct lan743x_adapter *adapter =
366 container_of(ptp, struct lan743x_adapter, ptp);
367
368 lan743x_ptp_clock_step(adapter, delta);
369
370 return 0;
371}
372
373static int lan743x_ptpci_gettime64(struct ptp_clock_info *ptpci,
374 struct timespec64 *ts)
375{
376 struct lan743x_ptp *ptp =
377 container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
378 struct lan743x_adapter *adapter =
379 container_of(ptp, struct lan743x_adapter, ptp);
380 u32 nano_seconds = 0;
381 u32 seconds = 0;
382
383 if (adapter->is_pci11x1x)
384 lan743x_ptp_io_clock_get(adapter, &seconds, &nano_seconds,
385 NULL);
386 else
387 lan743x_ptp_clock_get(adapter, &seconds, &nano_seconds, NULL);
388 ts->tv_sec = seconds;
389 ts->tv_nsec = nano_seconds;
390
391 return 0;
392}
393
394static int lan743x_ptpci_settime64(struct ptp_clock_info *ptpci,
395 const struct timespec64 *ts)
396{
397 struct lan743x_ptp *ptp =
398 container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
399 struct lan743x_adapter *adapter =
400 container_of(ptp, struct lan743x_adapter, ptp);
401 u32 nano_seconds = 0;
402 u32 seconds = 0;
403
404 if (ts->tv_sec > 0xFFFFFFFFLL) {
405 netif_warn(adapter, drv, adapter->netdev,
406 "ts->tv_sec out of range, %lld\n",
407 ts->tv_sec);
408 return -ERANGE;
409 }
410 if (ts->tv_nsec < 0) {
411 netif_warn(adapter, drv, adapter->netdev,
412 "ts->tv_nsec out of range, %ld\n",
413 ts->tv_nsec);
414 return -ERANGE;
415 }
416 seconds = ts->tv_sec;
417 nano_seconds = ts->tv_nsec;
418 lan743x_ptp_clock_set(adapter, seconds, nano_seconds, 0);
419
420 return 0;
421}
422
423static void lan743x_ptp_perout_off(struct lan743x_adapter *adapter,
424 unsigned int index)
425{
426 struct lan743x_ptp *ptp = &adapter->ptp;
427 u32 general_config = 0;
428 struct lan743x_ptp_perout *perout = &ptp->perout[index];
429
430 if (perout->gpio_pin >= 0) {
431 lan743x_gpio_release(adapter, perout->gpio_pin);
432 perout->gpio_pin = -1;
433 }
434
435 if (perout->event_ch >= 0) {
436 /* set target to far in the future, effectively disabling it */
437 lan743x_csr_write(adapter,
438 PTP_CLOCK_TARGET_SEC_X(perout->event_ch),
439 0xFFFF0000);
440 lan743x_csr_write(adapter,
441 PTP_CLOCK_TARGET_NS_X(perout->event_ch),
442 0);
443
444 general_config = lan743x_csr_read(adapter, PTP_GENERAL_CONFIG);
445 general_config |= PTP_GENERAL_CONFIG_RELOAD_ADD_X_
446 (perout->event_ch);
447 lan743x_csr_write(adapter, PTP_GENERAL_CONFIG, general_config);
448 lan743x_ptp_release_event_ch(adapter, perout->event_ch);
449 perout->event_ch = -1;
450 }
451}
452
453static int lan743x_ptp_perout(struct lan743x_adapter *adapter, int on,
454 struct ptp_perout_request *perout_request)
455{
456 struct lan743x_ptp *ptp = &adapter->ptp;
457 u32 period_sec = 0, period_nsec = 0;
458 u32 start_sec = 0, start_nsec = 0;
459 u32 general_config = 0;
460 int pulse_width = 0;
461 int perout_pin = 0;
462 unsigned int index = perout_request->index;
463 struct lan743x_ptp_perout *perout = &ptp->perout[index];
464 int ret = 0;
465
466 /* Reject requests with unsupported flags */
467 if (perout_request->flags & ~PTP_PEROUT_DUTY_CYCLE)
468 return -EOPNOTSUPP;
469
470 if (on) {
471 perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT,
472 perout_request->index);
473 if (perout_pin < 0)
474 return -EBUSY;
475 } else {
476 lan743x_ptp_perout_off(adapter, index);
477 return 0;
478 }
479
480 if (perout->event_ch >= 0 ||
481 perout->gpio_pin >= 0) {
482 /* already on, turn off first */
483 lan743x_ptp_perout_off(adapter, index);
484 }
485
486 perout->event_ch = lan743x_ptp_reserve_event_ch(adapter, index);
487
488 if (perout->event_ch < 0) {
489 netif_warn(adapter, drv, adapter->netdev,
490 "Failed to reserve event channel %d for PEROUT\n",
491 index);
492 ret = -EBUSY;
493 goto failed;
494 }
495
496 perout->gpio_pin = lan743x_gpio_rsrv_ptp_out(adapter,
497 perout_pin,
498 perout->event_ch);
499
500 if (perout->gpio_pin < 0) {
501 netif_warn(adapter, drv, adapter->netdev,
502 "Failed to reserve gpio %d for PEROUT\n",
503 perout_pin);
504 ret = -EBUSY;
505 goto failed;
506 }
507
508 start_sec = perout_request->start.sec;
509 start_sec += perout_request->start.nsec / 1000000000;
510 start_nsec = perout_request->start.nsec % 1000000000;
511
512 period_sec = perout_request->period.sec;
513 period_sec += perout_request->period.nsec / 1000000000;
514 period_nsec = perout_request->period.nsec % 1000000000;
515
516 if (perout_request->flags & PTP_PEROUT_DUTY_CYCLE) {
517 struct timespec64 ts_on, ts_period;
518 s64 wf_high, period64, half;
519 s32 reminder;
520
521 ts_on.tv_sec = perout_request->on.sec;
522 ts_on.tv_nsec = perout_request->on.nsec;
523 wf_high = timespec64_to_ns(&ts_on);
524 ts_period.tv_sec = perout_request->period.sec;
525 ts_period.tv_nsec = perout_request->period.nsec;
526 period64 = timespec64_to_ns(&ts_period);
527
528 if (period64 < 200) {
529 netif_warn(adapter, drv, adapter->netdev,
530 "perout period too small, minimum is 200nS\n");
531 ret = -EOPNOTSUPP;
532 goto failed;
533 }
534 if (wf_high >= period64) {
535 netif_warn(adapter, drv, adapter->netdev,
536 "pulse width must be smaller than period\n");
537 ret = -EINVAL;
538 goto failed;
539 }
540
541 /* Check if we can do 50% toggle on an even value of period.
542 * If the period number is odd, then check if the requested
543 * pulse width is the same as one of pre-defined width values.
544 * Otherwise, return failure.
545 */
546 half = div_s64_rem(period64, 2, &reminder);
547 if (!reminder) {
548 if (half == wf_high) {
549 /* It's 50% match. Use the toggle option */
550 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_TOGGLE_;
551 /* In this case, divide period value by 2 */
552 ts_period = ns_to_timespec64(div_s64(period64, 2));
553 period_sec = ts_period.tv_sec;
554 period_nsec = ts_period.tv_nsec;
555
556 goto program;
557 }
558 }
559 /* if we can't do toggle, then the width option needs to be the exact match */
560 if (wf_high == 200000000) {
561 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
562 } else if (wf_high == 10000000) {
563 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_;
564 } else if (wf_high == 1000000) {
565 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_;
566 } else if (wf_high == 100000) {
567 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_;
568 } else if (wf_high == 10000) {
569 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_;
570 } else if (wf_high == 100) {
571 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_;
572 } else {
573 netif_warn(adapter, drv, adapter->netdev,
574 "duty cycle specified is not supported\n");
575 ret = -EOPNOTSUPP;
576 goto failed;
577 }
578 } else {
579 if (period_sec == 0) {
580 if (period_nsec >= 400000000) {
581 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
582 } else if (period_nsec >= 20000000) {
583 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_;
584 } else if (period_nsec >= 2000000) {
585 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_;
586 } else if (period_nsec >= 200000) {
587 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_;
588 } else if (period_nsec >= 20000) {
589 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_;
590 } else if (period_nsec >= 200) {
591 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_;
592 } else {
593 netif_warn(adapter, drv, adapter->netdev,
594 "perout period too small, minimum is 200nS\n");
595 ret = -EOPNOTSUPP;
596 goto failed;
597 }
598 } else {
599 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
600 }
601 }
602program:
603
604 /* turn off by setting target far in future */
605 lan743x_csr_write(adapter,
606 PTP_CLOCK_TARGET_SEC_X(perout->event_ch),
607 0xFFFF0000);
608 lan743x_csr_write(adapter,
609 PTP_CLOCK_TARGET_NS_X(perout->event_ch), 0);
610
611 /* Configure to pulse every period */
612 general_config = lan743x_csr_read(adapter, PTP_GENERAL_CONFIG);
613 general_config &= ~(PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_
614 (perout->event_ch));
615 general_config |= PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_
616 (perout->event_ch, pulse_width);
617 general_config &= ~PTP_GENERAL_CONFIG_RELOAD_ADD_X_
618 (perout->event_ch);
619 lan743x_csr_write(adapter, PTP_GENERAL_CONFIG, general_config);
620
621 /* set the reload to one toggle cycle */
622 lan743x_csr_write(adapter,
623 PTP_CLOCK_TARGET_RELOAD_SEC_X(perout->event_ch),
624 period_sec);
625 lan743x_csr_write(adapter,
626 PTP_CLOCK_TARGET_RELOAD_NS_X(perout->event_ch),
627 period_nsec);
628
629 /* set the start time */
630 lan743x_csr_write(adapter,
631 PTP_CLOCK_TARGET_SEC_X(perout->event_ch),
632 start_sec);
633 lan743x_csr_write(adapter,
634 PTP_CLOCK_TARGET_NS_X(perout->event_ch),
635 start_nsec);
636
637 return 0;
638
639failed:
640 lan743x_ptp_perout_off(adapter, index);
641 return ret;
642}
643
644static void lan743x_ptp_io_perout_off(struct lan743x_adapter *adapter,
645 u32 index)
646{
647 struct lan743x_ptp *ptp = &adapter->ptp;
648 int perout_pin;
649 int event_ch;
650 u32 gen_cfg;
651 int val;
652
653 event_ch = ptp->ptp_io_perout[index];
654 if (event_ch >= 0) {
655 /* set target to far in the future, effectively disabling it */
656 lan743x_csr_write(adapter,
657 PTP_CLOCK_TARGET_SEC_X(event_ch),
658 0xFFFF0000);
659 lan743x_csr_write(adapter,
660 PTP_CLOCK_TARGET_NS_X(event_ch),
661 0);
662
663 gen_cfg = lan743x_csr_read(adapter, HS_PTP_GENERAL_CONFIG);
664 gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_
665 (event_ch));
666 gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_EVENT_POL_X_(event_ch));
667 gen_cfg |= HS_PTP_GENERAL_CONFIG_RELOAD_ADD_X_(event_ch);
668 lan743x_csr_write(adapter, HS_PTP_GENERAL_CONFIG, gen_cfg);
669 if (event_ch)
670 lan743x_csr_write(adapter, PTP_INT_STS,
671 PTP_INT_TIMER_INT_B_);
672 else
673 lan743x_csr_write(adapter, PTP_INT_STS,
674 PTP_INT_TIMER_INT_A_);
675 lan743x_ptp_release_event_ch(adapter, event_ch);
676 ptp->ptp_io_perout[index] = -1;
677 }
678
679 perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT, index);
680
681 /* Deselect Event output */
682 val = lan743x_csr_read(adapter, PTP_IO_EVENT_OUTPUT_CFG);
683
684 /* Disables the output of Local Time Target compare events */
685 val &= ~PTP_IO_EVENT_OUTPUT_CFG_EN_(perout_pin);
686 lan743x_csr_write(adapter, PTP_IO_EVENT_OUTPUT_CFG, val);
687
688 /* Configured as an opendrain driver*/
689 val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG);
690 val &= ~PTP_IO_PIN_CFG_OBUF_TYPE_(perout_pin);
691 lan743x_csr_write(adapter, PTP_IO_PIN_CFG, val);
692 /* Dummy read to make sure write operation success */
693 val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG);
694}
695
696static int lan743x_ptp_io_perout(struct lan743x_adapter *adapter, int on,
697 struct ptp_perout_request *perout_request)
698{
699 struct lan743x_ptp *ptp = &adapter->ptp;
700 u32 period_sec, period_nsec;
701 u32 start_sec, start_nsec;
702 u32 pulse_sec, pulse_nsec;
703 int pulse_width;
704 int perout_pin;
705 int event_ch;
706 u32 gen_cfg;
707 u32 index;
708 int val;
709
710 index = perout_request->index;
711 event_ch = ptp->ptp_io_perout[index];
712
713 if (on) {
714 perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT, index);
715 if (perout_pin < 0)
716 return -EBUSY;
717 } else {
718 lan743x_ptp_io_perout_off(adapter, index);
719 return 0;
720 }
721
722 if (event_ch >= LAN743X_PTP_N_EVENT_CHAN) {
723 /* already on, turn off first */
724 lan743x_ptp_io_perout_off(adapter, index);
725 }
726
727 event_ch = lan743x_ptp_reserve_event_ch(adapter, index);
728 if (event_ch < 0) {
729 netif_warn(adapter, drv, adapter->netdev,
730 "Failed to reserve event channel %d for PEROUT\n",
731 index);
732 goto failed;
733 }
734 ptp->ptp_io_perout[index] = event_ch;
735
736 if (perout_request->flags & PTP_PEROUT_DUTY_CYCLE) {
737 pulse_sec = perout_request->on.sec;
738 pulse_sec += perout_request->on.nsec / 1000000000;
739 pulse_nsec = perout_request->on.nsec % 1000000000;
740 } else {
741 pulse_sec = perout_request->period.sec;
742 pulse_sec += perout_request->period.nsec / 1000000000;
743 pulse_nsec = perout_request->period.nsec % 1000000000;
744 }
745
746 if (pulse_sec == 0) {
747 if (pulse_nsec >= 400000000) {
748 pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
749 } else if (pulse_nsec >= 200000000) {
750 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100MS_;
751 } else if (pulse_nsec >= 100000000) {
752 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_50MS_;
753 } else if (pulse_nsec >= 20000000) {
754 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_;
755 } else if (pulse_nsec >= 10000000) {
756 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_5MS_;
757 } else if (pulse_nsec >= 2000000) {
758 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_;
759 } else if (pulse_nsec >= 1000000) {
760 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_500US_;
761 } else if (pulse_nsec >= 200000) {
762 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_;
763 } else if (pulse_nsec >= 100000) {
764 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_50US_;
765 } else if (pulse_nsec >= 20000) {
766 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_;
767 } else if (pulse_nsec >= 10000) {
768 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_5US_;
769 } else if (pulse_nsec >= 2000) {
770 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_1US_;
771 } else if (pulse_nsec >= 1000) {
772 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_500NS_;
773 } else if (pulse_nsec >= 200) {
774 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_;
775 } else {
776 netif_warn(adapter, drv, adapter->netdev,
777 "perout period too small, min is 200nS\n");
778 goto failed;
779 }
780 } else {
781 pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
782 }
783
784 /* turn off by setting target far in future */
785 lan743x_csr_write(adapter,
786 PTP_CLOCK_TARGET_SEC_X(event_ch),
787 0xFFFF0000);
788 lan743x_csr_write(adapter,
789 PTP_CLOCK_TARGET_NS_X(event_ch), 0);
790
791 /* Configure to pulse every period */
792 gen_cfg = lan743x_csr_read(adapter, HS_PTP_GENERAL_CONFIG);
793 gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_(event_ch));
794 gen_cfg |= HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_
795 (event_ch, pulse_width);
796 gen_cfg |= HS_PTP_GENERAL_CONFIG_EVENT_POL_X_(event_ch);
797 gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_RELOAD_ADD_X_(event_ch));
798 lan743x_csr_write(adapter, HS_PTP_GENERAL_CONFIG, gen_cfg);
799
800 /* set the reload to one toggle cycle */
801 period_sec = perout_request->period.sec;
802 period_sec += perout_request->period.nsec / 1000000000;
803 period_nsec = perout_request->period.nsec % 1000000000;
804 lan743x_csr_write(adapter,
805 PTP_CLOCK_TARGET_RELOAD_SEC_X(event_ch),
806 period_sec);
807 lan743x_csr_write(adapter,
808 PTP_CLOCK_TARGET_RELOAD_NS_X(event_ch),
809 period_nsec);
810
811 start_sec = perout_request->start.sec;
812 start_sec += perout_request->start.nsec / 1000000000;
813 start_nsec = perout_request->start.nsec % 1000000000;
814
815 /* set the start time */
816 lan743x_csr_write(adapter,
817 PTP_CLOCK_TARGET_SEC_X(event_ch),
818 start_sec);
819 lan743x_csr_write(adapter,
820 PTP_CLOCK_TARGET_NS_X(event_ch),
821 start_nsec);
822
823 /* Enable LTC Target Read */
824 val = lan743x_csr_read(adapter, PTP_CMD_CTL);
825 val |= PTP_CMD_CTL_PTP_LTC_TARGET_READ_;
826 lan743x_csr_write(adapter, PTP_CMD_CTL, val);
827
828 /* Configure as an push/pull driver */
829 val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG);
830 val |= PTP_IO_PIN_CFG_OBUF_TYPE_(perout_pin);
831 lan743x_csr_write(adapter, PTP_IO_PIN_CFG, val);
832
833 /* Select Event output */
834 val = lan743x_csr_read(adapter, PTP_IO_EVENT_OUTPUT_CFG);
835 if (event_ch)
836 /* Channel B as the output */
837 val |= PTP_IO_EVENT_OUTPUT_CFG_SEL_(perout_pin);
838 else
839 /* Channel A as the output */
840 val &= ~PTP_IO_EVENT_OUTPUT_CFG_SEL_(perout_pin);
841
842 /* Enables the output of Local Time Target compare events */
843 val |= PTP_IO_EVENT_OUTPUT_CFG_EN_(perout_pin);
844 lan743x_csr_write(adapter, PTP_IO_EVENT_OUTPUT_CFG, val);
845
846 return 0;
847
848failed:
849 lan743x_ptp_io_perout_off(adapter, index);
850 return -ENODEV;
851}
852
853static void lan743x_ptp_io_extts_off(struct lan743x_adapter *adapter,
854 u32 index)
855{
856 struct lan743x_ptp *ptp = &adapter->ptp;
857 struct lan743x_extts *extts;
858 int val;
859
860 extts = &ptp->extts[index];
861 /* PTP Interrupt Enable Clear Register */
862 if (extts->flags & PTP_FALLING_EDGE)
863 val = PTP_INT_EN_FE_EN_CLR_(index);
864 else
865 val = PTP_INT_EN_RE_EN_CLR_(index);
866 lan743x_csr_write(adapter, PTP_INT_EN_CLR, val);
867
868 /* Disables PTP-IO edge lock */
869 val = lan743x_csr_read(adapter, PTP_IO_CAP_CONFIG);
870 if (extts->flags & PTP_FALLING_EDGE) {
871 val &= ~PTP_IO_CAP_CONFIG_LOCK_FE_(index);
872 val &= ~PTP_IO_CAP_CONFIG_FE_CAP_EN_(index);
873 } else {
874 val &= ~PTP_IO_CAP_CONFIG_LOCK_RE_(index);
875 val &= ~PTP_IO_CAP_CONFIG_RE_CAP_EN_(index);
876 }
877 lan743x_csr_write(adapter, PTP_IO_CAP_CONFIG, val);
878
879 /* PTP-IO De-select register */
880 val = lan743x_csr_read(adapter, PTP_IO_SEL);
881 val &= ~PTP_IO_SEL_MASK_;
882 lan743x_csr_write(adapter, PTP_IO_SEL, val);
883
884 /* Clear timestamp */
885 memset(&extts->ts, 0, sizeof(struct timespec64));
886 extts->flags = 0;
887}
888
889static int lan743x_ptp_io_event_cap_en(struct lan743x_adapter *adapter,
890 u32 flags, u32 channel)
891{
892 struct lan743x_ptp *ptp = &adapter->ptp;
893 int val;
894
895 if ((flags & PTP_EXTTS_EDGES) == PTP_EXTTS_EDGES)
896 return -EOPNOTSUPP;
897
898 mutex_lock(&ptp->command_lock);
899 /* PTP-IO Event Capture Enable */
900 val = lan743x_csr_read(adapter, PTP_IO_CAP_CONFIG);
901 if (flags & PTP_FALLING_EDGE) {
902 val &= ~PTP_IO_CAP_CONFIG_LOCK_RE_(channel);
903 val &= ~PTP_IO_CAP_CONFIG_RE_CAP_EN_(channel);
904 val |= PTP_IO_CAP_CONFIG_LOCK_FE_(channel);
905 val |= PTP_IO_CAP_CONFIG_FE_CAP_EN_(channel);
906 } else {
907 /* Rising eventing as Default */
908 val &= ~PTP_IO_CAP_CONFIG_LOCK_FE_(channel);
909 val &= ~PTP_IO_CAP_CONFIG_FE_CAP_EN_(channel);
910 val |= PTP_IO_CAP_CONFIG_LOCK_RE_(channel);
911 val |= PTP_IO_CAP_CONFIG_RE_CAP_EN_(channel);
912 }
913 lan743x_csr_write(adapter, PTP_IO_CAP_CONFIG, val);
914
915 /* PTP-IO Select */
916 val = lan743x_csr_read(adapter, PTP_IO_SEL);
917 val &= ~PTP_IO_SEL_MASK_;
918 val |= channel << PTP_IO_SEL_SHIFT_;
919 lan743x_csr_write(adapter, PTP_IO_SEL, val);
920
921 /* PTP Interrupt Enable Register */
922 if (flags & PTP_FALLING_EDGE)
923 val = PTP_INT_EN_FE_EN_SET_(channel);
924 else
925 val = PTP_INT_EN_RE_EN_SET_(channel);
926 lan743x_csr_write(adapter, PTP_INT_EN_SET, val);
927
928 mutex_unlock(&ptp->command_lock);
929
930 return 0;
931}
932
933static int lan743x_ptp_io_extts(struct lan743x_adapter *adapter, int on,
934 struct ptp_extts_request *extts_request)
935{
936 struct lan743x_ptp *ptp = &adapter->ptp;
937 u32 flags = extts_request->flags;
938 u32 index = extts_request->index;
939 struct lan743x_extts *extts;
940 int extts_pin;
941 int ret = 0;
942
943 extts = &ptp->extts[index];
944
945 if (on) {
946 extts_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_EXTTS, index);
947 if (extts_pin < 0)
948 return -EBUSY;
949
950 ret = lan743x_ptp_io_event_cap_en(adapter, flags, index);
951 if (!ret)
952 extts->flags = flags;
953 } else {
954 lan743x_ptp_io_extts_off(adapter, index);
955 }
956
957 return ret;
958}
959
960static int lan743x_ptpci_enable(struct ptp_clock_info *ptpci,
961 struct ptp_clock_request *request, int on)
962{
963 struct lan743x_ptp *ptp =
964 container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
965 struct lan743x_adapter *adapter =
966 container_of(ptp, struct lan743x_adapter, ptp);
967
968 if (request) {
969 switch (request->type) {
970 case PTP_CLK_REQ_EXTTS:
971 if (request->extts.index < ptpci->n_ext_ts)
972 return lan743x_ptp_io_extts(adapter, on,
973 &request->extts);
974 return -EINVAL;
975 case PTP_CLK_REQ_PEROUT:
976 if (request->perout.index < ptpci->n_per_out) {
977 if (adapter->is_pci11x1x)
978 return lan743x_ptp_io_perout(adapter, on,
979 &request->perout);
980 else
981 return lan743x_ptp_perout(adapter, on,
982 &request->perout);
983 }
984 return -EINVAL;
985 case PTP_CLK_REQ_PPS:
986 return -EINVAL;
987 default:
988 netif_err(adapter, drv, adapter->netdev,
989 "request->type == %d, Unknown\n",
990 request->type);
991 break;
992 }
993 } else {
994 netif_err(adapter, drv, adapter->netdev, "request == NULL\n");
995 }
996 return 0;
997}
998
999static int lan743x_ptpci_verify_pin_config(struct ptp_clock_info *ptp,
1000 unsigned int pin,
1001 enum ptp_pin_function func,
1002 unsigned int chan)
1003{
1004 struct lan743x_ptp *lan_ptp =
1005 container_of(ptp, struct lan743x_ptp, ptp_clock_info);
1006 struct lan743x_adapter *adapter =
1007 container_of(lan_ptp, struct lan743x_adapter, ptp);
1008 int result = 0;
1009
1010 /* Confirm the requested function is supported. Parameter
1011 * validation is done by the caller.
1012 */
1013 switch (func) {
1014 case PTP_PF_NONE:
1015 case PTP_PF_PEROUT:
1016 break;
1017 case PTP_PF_EXTTS:
1018 if (!adapter->is_pci11x1x)
1019 result = -1;
1020 break;
1021 case PTP_PF_PHYSYNC:
1022 default:
1023 result = -1;
1024 break;
1025 }
1026 return result;
1027}
1028
1029static void lan743x_ptp_io_event_clock_get(struct lan743x_adapter *adapter,
1030 bool fe, u8 channel,
1031 struct timespec64 *ts)
1032{
1033 struct lan743x_ptp *ptp = &adapter->ptp;
1034 struct lan743x_extts *extts;
1035 u32 sec, nsec;
1036
1037 mutex_lock(&ptp->command_lock);
1038 if (fe) {
1039 sec = lan743x_csr_read(adapter, PTP_IO_FE_LTC_SEC_CAP_X);
1040 nsec = lan743x_csr_read(adapter, PTP_IO_FE_LTC_NS_CAP_X);
1041 } else {
1042 sec = lan743x_csr_read(adapter, PTP_IO_RE_LTC_SEC_CAP_X);
1043 nsec = lan743x_csr_read(adapter, PTP_IO_RE_LTC_NS_CAP_X);
1044 }
1045
1046 mutex_unlock(&ptp->command_lock);
1047
1048 /* Update Local timestamp */
1049 extts = &ptp->extts[channel];
1050 extts->ts.tv_sec = sec;
1051 extts->ts.tv_nsec = nsec;
1052 ts->tv_sec = sec;
1053 ts->tv_nsec = nsec;
1054}
1055
1056static long lan743x_ptpci_do_aux_work(struct ptp_clock_info *ptpci)
1057{
1058 struct lan743x_ptp *ptp =
1059 container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
1060 struct lan743x_adapter *adapter =
1061 container_of(ptp, struct lan743x_adapter, ptp);
1062 u32 cap_info, cause, header, nsec, seconds;
1063 bool new_timestamp_available = false;
1064 struct ptp_clock_event ptp_event;
1065 struct timespec64 ts;
1066 int ptp_int_sts;
1067 int count = 0;
1068 int channel;
1069 s64 ns;
1070
1071 ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS);
1072 while ((count < 100) && ptp_int_sts) {
1073 count++;
1074
1075 if (ptp_int_sts & PTP_INT_BIT_TX_TS_) {
1076 cap_info = lan743x_csr_read(adapter, PTP_CAP_INFO);
1077
1078 if (PTP_CAP_INFO_TX_TS_CNT_GET_(cap_info) > 0) {
1079 seconds = lan743x_csr_read(adapter,
1080 PTP_TX_EGRESS_SEC);
1081 nsec = lan743x_csr_read(adapter,
1082 PTP_TX_EGRESS_NS);
1083 cause = (nsec &
1084 PTP_TX_EGRESS_NS_CAPTURE_CAUSE_MASK_);
1085 header = lan743x_csr_read(adapter,
1086 PTP_TX_MSG_HEADER);
1087
1088 if (cause ==
1089 PTP_TX_EGRESS_NS_CAPTURE_CAUSE_SW_) {
1090 nsec &= PTP_TX_EGRESS_NS_TS_NS_MASK_;
1091 lan743x_ptp_tx_ts_enqueue_ts(adapter,
1092 seconds,
1093 nsec,
1094 header);
1095 new_timestamp_available = true;
1096 } else if (cause ==
1097 PTP_TX_EGRESS_NS_CAPTURE_CAUSE_AUTO_) {
1098 netif_err(adapter, drv, adapter->netdev,
1099 "Auto capture cause not supported\n");
1100 } else {
1101 netif_warn(adapter, drv, adapter->netdev,
1102 "unknown tx timestamp capture cause\n");
1103 }
1104 } else {
1105 netif_warn(adapter, drv, adapter->netdev,
1106 "TX TS INT but no TX TS CNT\n");
1107 }
1108 lan743x_csr_write(adapter, PTP_INT_STS,
1109 PTP_INT_BIT_TX_TS_);
1110 }
1111
1112 if (ptp_int_sts & PTP_INT_IO_FE_MASK_) {
1113 do {
1114 channel = lan743x_get_channel((ptp_int_sts &
1115 PTP_INT_IO_FE_MASK_) >>
1116 PTP_INT_IO_FE_SHIFT_);
1117 if (channel >= 0 &&
1118 channel < PCI11X1X_PTP_IO_MAX_CHANNELS) {
1119 lan743x_ptp_io_event_clock_get(adapter,
1120 true,
1121 channel,
1122 &ts);
1123 /* PTP Falling Event post */
1124 ns = timespec64_to_ns(&ts);
1125 ptp_event.timestamp = ns;
1126 ptp_event.index = channel;
1127 ptp_event.type = PTP_CLOCK_EXTTS;
1128 ptp_clock_event(ptp->ptp_clock,
1129 &ptp_event);
1130 lan743x_csr_write(adapter, PTP_INT_STS,
1131 PTP_INT_IO_FE_SET_
1132 (channel));
1133 ptp_int_sts &= ~(1 <<
1134 (PTP_INT_IO_FE_SHIFT_ +
1135 channel));
1136 } else {
1137 /* Clear falling event interrupts */
1138 lan743x_csr_write(adapter, PTP_INT_STS,
1139 PTP_INT_IO_FE_MASK_);
1140 ptp_int_sts &= ~PTP_INT_IO_FE_MASK_;
1141 }
1142 } while (ptp_int_sts & PTP_INT_IO_FE_MASK_);
1143 }
1144
1145 if (ptp_int_sts & PTP_INT_IO_RE_MASK_) {
1146 do {
1147 channel = lan743x_get_channel((ptp_int_sts &
1148 PTP_INT_IO_RE_MASK_) >>
1149 PTP_INT_IO_RE_SHIFT_);
1150 if (channel >= 0 &&
1151 channel < PCI11X1X_PTP_IO_MAX_CHANNELS) {
1152 lan743x_ptp_io_event_clock_get(adapter,
1153 false,
1154 channel,
1155 &ts);
1156 /* PTP Rising Event post */
1157 ns = timespec64_to_ns(&ts);
1158 ptp_event.timestamp = ns;
1159 ptp_event.index = channel;
1160 ptp_event.type = PTP_CLOCK_EXTTS;
1161 ptp_clock_event(ptp->ptp_clock,
1162 &ptp_event);
1163 lan743x_csr_write(adapter, PTP_INT_STS,
1164 PTP_INT_IO_RE_SET_
1165 (channel));
1166 ptp_int_sts &= ~(1 <<
1167 (PTP_INT_IO_RE_SHIFT_ +
1168 channel));
1169 } else {
1170 /* Clear Rising event interrupt */
1171 lan743x_csr_write(adapter, PTP_INT_STS,
1172 PTP_INT_IO_RE_MASK_);
1173 ptp_int_sts &= ~PTP_INT_IO_RE_MASK_;
1174 }
1175 } while (ptp_int_sts & PTP_INT_IO_RE_MASK_);
1176 }
1177
1178 ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS);
1179 }
1180
1181 if (new_timestamp_available)
1182 lan743x_ptp_tx_ts_complete(adapter);
1183
1184 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
1185
1186 return -1;
1187}
1188
1189static void lan743x_ptp_clock_get(struct lan743x_adapter *adapter,
1190 u32 *seconds, u32 *nano_seconds,
1191 u32 *sub_nano_seconds)
1192{
1193 struct lan743x_ptp *ptp = &adapter->ptp;
1194
1195 mutex_lock(&ptp->command_lock);
1196
1197 lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_READ_);
1198 lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_READ_);
1199
1200 if (seconds)
1201 (*seconds) = lan743x_csr_read(adapter, PTP_CLOCK_SEC);
1202
1203 if (nano_seconds)
1204 (*nano_seconds) = lan743x_csr_read(adapter, PTP_CLOCK_NS);
1205
1206 if (sub_nano_seconds)
1207 (*sub_nano_seconds) =
1208 lan743x_csr_read(adapter, PTP_CLOCK_SUBNS);
1209
1210 mutex_unlock(&ptp->command_lock);
1211}
1212
1213static void lan743x_ptp_io_clock_get(struct lan743x_adapter *adapter,
1214 u32 *sec, u32 *nsec, u32 *sub_nsec)
1215{
1216 struct lan743x_ptp *ptp = &adapter->ptp;
1217
1218 mutex_lock(&ptp->command_lock);
1219 lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_READ_);
1220 lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_READ_);
1221
1222 if (sec)
1223 (*sec) = lan743x_csr_read(adapter, PTP_LTC_RD_SEC_LO);
1224
1225 if (nsec)
1226 (*nsec) = lan743x_csr_read(adapter, PTP_LTC_RD_NS);
1227
1228 if (sub_nsec)
1229 (*sub_nsec) =
1230 lan743x_csr_read(adapter, PTP_LTC_RD_SUBNS);
1231
1232 mutex_unlock(&ptp->command_lock);
1233}
1234
1235static void lan743x_ptp_clock_step(struct lan743x_adapter *adapter,
1236 s64 time_step_ns)
1237{
1238 struct lan743x_ptp *ptp = &adapter->ptp;
1239 u32 nano_seconds_step = 0;
1240 u64 abs_time_step_ns = 0;
1241 u32 unsigned_seconds = 0;
1242 u32 nano_seconds = 0;
1243 u32 remainder = 0;
1244 s32 seconds = 0;
1245
1246 if (time_step_ns > 15000000000LL) {
1247 /* convert to clock set */
1248 if (adapter->is_pci11x1x)
1249 lan743x_ptp_io_clock_get(adapter, &unsigned_seconds,
1250 &nano_seconds, NULL);
1251 else
1252 lan743x_ptp_clock_get(adapter, &unsigned_seconds,
1253 &nano_seconds, NULL);
1254 unsigned_seconds += div_u64_rem(time_step_ns, 1000000000LL,
1255 &remainder);
1256 nano_seconds += remainder;
1257 if (nano_seconds >= 1000000000) {
1258 unsigned_seconds++;
1259 nano_seconds -= 1000000000;
1260 }
1261 lan743x_ptp_clock_set(adapter, unsigned_seconds,
1262 nano_seconds, 0);
1263 return;
1264 } else if (time_step_ns < -15000000000LL) {
1265 /* convert to clock set */
1266 time_step_ns = -time_step_ns;
1267
1268 if (adapter->is_pci11x1x) {
1269 lan743x_ptp_io_clock_get(adapter, &unsigned_seconds,
1270 &nano_seconds, NULL);
1271 } else {
1272 lan743x_ptp_clock_get(adapter, &unsigned_seconds,
1273 &nano_seconds, NULL);
1274 }
1275 unsigned_seconds -= div_u64_rem(time_step_ns, 1000000000LL,
1276 &remainder);
1277 nano_seconds_step = remainder;
1278 if (nano_seconds < nano_seconds_step) {
1279 unsigned_seconds--;
1280 nano_seconds += 1000000000;
1281 }
1282 nano_seconds -= nano_seconds_step;
1283 lan743x_ptp_clock_set(adapter, unsigned_seconds,
1284 nano_seconds, 0);
1285 return;
1286 }
1287
1288 /* do clock step */
1289 if (time_step_ns >= 0) {
1290 abs_time_step_ns = (u64)(time_step_ns);
1291 seconds = (s32)div_u64_rem(abs_time_step_ns, 1000000000,
1292 &remainder);
1293 nano_seconds = (u32)remainder;
1294 } else {
1295 abs_time_step_ns = (u64)(-time_step_ns);
1296 seconds = -((s32)div_u64_rem(abs_time_step_ns, 1000000000,
1297 &remainder));
1298 nano_seconds = (u32)remainder;
1299 if (nano_seconds > 0) {
1300 /* subtracting nano seconds is not allowed
1301 * convert to subtracting from seconds,
1302 * and adding to nanoseconds
1303 */
1304 seconds--;
1305 nano_seconds = (1000000000 - nano_seconds);
1306 }
1307 }
1308
1309 if (nano_seconds > 0) {
1310 /* add 8 ns to cover the likely normal increment */
1311 nano_seconds += 8;
1312 }
1313
1314 if (nano_seconds >= 1000000000) {
1315 /* carry into seconds */
1316 seconds++;
1317 nano_seconds -= 1000000000;
1318 }
1319
1320 while (seconds) {
1321 mutex_lock(&ptp->command_lock);
1322 if (seconds > 0) {
1323 u32 adjustment_value = (u32)seconds;
1324
1325 if (adjustment_value > 0xF)
1326 adjustment_value = 0xF;
1327 lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
1328 PTP_CLOCK_STEP_ADJ_DIR_ |
1329 adjustment_value);
1330 seconds -= ((s32)adjustment_value);
1331 } else {
1332 u32 adjustment_value = (u32)(-seconds);
1333
1334 if (adjustment_value > 0xF)
1335 adjustment_value = 0xF;
1336 lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
1337 adjustment_value);
1338 seconds += ((s32)adjustment_value);
1339 }
1340 lan743x_csr_write(adapter, PTP_CMD_CTL,
1341 PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_);
1342 lan743x_ptp_wait_till_cmd_done(adapter,
1343 PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_);
1344 mutex_unlock(&ptp->command_lock);
1345 }
1346 if (nano_seconds) {
1347 mutex_lock(&ptp->command_lock);
1348 lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
1349 PTP_CLOCK_STEP_ADJ_DIR_ |
1350 (nano_seconds &
1351 PTP_CLOCK_STEP_ADJ_VALUE_MASK_));
1352 lan743x_csr_write(adapter, PTP_CMD_CTL,
1353 PTP_CMD_CTL_PTP_CLK_STP_NSEC_);
1354 lan743x_ptp_wait_till_cmd_done(adapter,
1355 PTP_CMD_CTL_PTP_CLK_STP_NSEC_);
1356 mutex_unlock(&ptp->command_lock);
1357 }
1358}
1359
1360void lan743x_ptp_isr(void *context)
1361{
1362 struct lan743x_adapter *adapter = (struct lan743x_adapter *)context;
1363 struct lan743x_ptp *ptp = NULL;
1364 int enable_flag = 1;
1365 u32 ptp_int_sts = 0;
1366
1367 ptp = &adapter->ptp;
1368
1369 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_1588_);
1370
1371 ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS);
1372 ptp_int_sts &= lan743x_csr_read(adapter, PTP_INT_EN_SET);
1373
1374 if (ptp_int_sts & PTP_INT_BIT_TX_TS_) {
1375 ptp_schedule_worker(ptp->ptp_clock, 0);
1376 enable_flag = 0;/* tasklet will re-enable later */
1377 }
1378 if (ptp_int_sts & PTP_INT_BIT_TX_SWTS_ERR_) {
1379 netif_err(adapter, drv, adapter->netdev,
1380 "PTP TX Software Timestamp Error\n");
1381 /* clear int status bit */
1382 lan743x_csr_write(adapter, PTP_INT_STS,
1383 PTP_INT_BIT_TX_SWTS_ERR_);
1384 }
1385 if (ptp_int_sts & PTP_INT_BIT_TIMER_B_) {
1386 /* clear int status bit */
1387 lan743x_csr_write(adapter, PTP_INT_STS,
1388 PTP_INT_BIT_TIMER_B_);
1389 }
1390 if (ptp_int_sts & PTP_INT_BIT_TIMER_A_) {
1391 /* clear int status bit */
1392 lan743x_csr_write(adapter, PTP_INT_STS,
1393 PTP_INT_BIT_TIMER_A_);
1394 }
1395
1396 if (enable_flag) {
1397 /* re-enable isr */
1398 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
1399 }
1400}
1401
1402static void lan743x_ptp_tx_ts_enqueue_skb(struct lan743x_adapter *adapter,
1403 struct sk_buff *skb, bool ignore_sync)
1404{
1405 struct lan743x_ptp *ptp = &adapter->ptp;
1406
1407 spin_lock_bh(&ptp->tx_ts_lock);
1408 if (ptp->tx_ts_skb_queue_size < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
1409 ptp->tx_ts_skb_queue[ptp->tx_ts_skb_queue_size] = skb;
1410 if (ignore_sync)
1411 ptp->tx_ts_ignore_sync_queue |=
1412 BIT(ptp->tx_ts_skb_queue_size);
1413 ptp->tx_ts_skb_queue_size++;
1414 } else {
1415 /* this should never happen, so long as the tx channel
1416 * calls and honors the result from
1417 * lan743x_ptp_request_tx_timestamp
1418 */
1419 netif_err(adapter, drv, adapter->netdev,
1420 "tx ts skb queue overflow\n");
1421 dev_kfree_skb(skb);
1422 }
1423 spin_unlock_bh(&ptp->tx_ts_lock);
1424}
1425
1426static void lan743x_ptp_sync_to_system_clock(struct lan743x_adapter *adapter)
1427{
1428 struct timespec64 ts;
1429
1430 ktime_get_clocktai_ts64(&ts);
1431
1432 lan743x_ptp_clock_set(adapter, ts.tv_sec, ts.tv_nsec, 0);
1433}
1434
1435void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
1436 u32 link_speed)
1437{
1438 switch (link_speed) {
1439 case 10:
1440 lan743x_csr_write(adapter, PTP_LATENCY,
1441 PTP_LATENCY_TX_SET_(0) |
1442 PTP_LATENCY_RX_SET_(0));
1443 break;
1444 case 100:
1445 lan743x_csr_write(adapter, PTP_LATENCY,
1446 PTP_LATENCY_TX_SET_(181) |
1447 PTP_LATENCY_RX_SET_(594));
1448 break;
1449 case 1000:
1450 lan743x_csr_write(adapter, PTP_LATENCY,
1451 PTP_LATENCY_TX_SET_(30) |
1452 PTP_LATENCY_RX_SET_(525));
1453 break;
1454 }
1455}
1456
1457int lan743x_ptp_init(struct lan743x_adapter *adapter)
1458{
1459 struct lan743x_ptp *ptp = &adapter->ptp;
1460 int i;
1461
1462 mutex_init(&ptp->command_lock);
1463 spin_lock_init(&ptp->tx_ts_lock);
1464 ptp->used_event_ch = 0;
1465
1466 for (i = 0; i < LAN743X_PTP_N_EVENT_CHAN; i++) {
1467 ptp->perout[i].event_ch = -1;
1468 ptp->perout[i].gpio_pin = -1;
1469 }
1470
1471 lan743x_led_mux_save(adapter);
1472
1473 return 0;
1474}
1475
1476int lan743x_ptp_open(struct lan743x_adapter *adapter)
1477{
1478 struct lan743x_ptp *ptp = &adapter->ptp;
1479 int ret = -ENODEV;
1480 u32 temp;
1481 int i;
1482 int n_pins;
1483
1484 lan743x_ptp_reset(adapter);
1485 lan743x_ptp_sync_to_system_clock(adapter);
1486 temp = lan743x_csr_read(adapter, PTP_TX_MOD2);
1487 temp |= PTP_TX_MOD2_TX_PTP_CLR_UDPV4_CHKSUM_;
1488 lan743x_csr_write(adapter, PTP_TX_MOD2, temp);
1489
1490 /* Default Timestamping */
1491 lan743x_rx_set_tstamp_mode(adapter, HWTSTAMP_FILTER_NONE);
1492
1493 lan743x_ptp_enable(adapter);
1494 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
1495 lan743x_csr_write(adapter, PTP_INT_EN_SET,
1496 PTP_INT_BIT_TX_SWTS_ERR_ | PTP_INT_BIT_TX_TS_);
1497 ptp->flags |= PTP_FLAG_ISR_ENABLED;
1498
1499 if (!IS_ENABLED(CONFIG_PTP_1588_CLOCK))
1500 return 0;
1501
1502 switch (adapter->csr.id_rev & ID_REV_ID_MASK_) {
1503 case ID_REV_ID_LAN7430_:
1504 n_pins = LAN7430_N_GPIO;
1505 break;
1506 case ID_REV_ID_LAN7431_:
1507 case ID_REV_ID_A011_:
1508 case ID_REV_ID_A041_:
1509 n_pins = LAN7431_N_GPIO;
1510 break;
1511 default:
1512 netif_warn(adapter, drv, adapter->netdev,
1513 "Unknown LAN743x (%08x). Assuming no GPIO\n",
1514 adapter->csr.id_rev);
1515 n_pins = 0;
1516 break;
1517 }
1518
1519 if (n_pins > LAN743X_PTP_N_GPIO)
1520 n_pins = LAN743X_PTP_N_GPIO;
1521
1522 for (i = 0; i < n_pins; i++) {
1523 struct ptp_pin_desc *ptp_pin = &ptp->pin_config[i];
1524
1525 snprintf(ptp_pin->name,
1526 sizeof(ptp_pin->name), "lan743x_ptp_pin_%02d", i);
1527 ptp_pin->index = i;
1528 ptp_pin->func = PTP_PF_NONE;
1529 }
1530
1531 ptp->ptp_clock_info.owner = THIS_MODULE;
1532 snprintf(ptp->ptp_clock_info.name, 16, "%pm",
1533 adapter->netdev->dev_addr);
1534 ptp->ptp_clock_info.max_adj = LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB;
1535 ptp->ptp_clock_info.n_alarm = 0;
1536 ptp->ptp_clock_info.n_ext_ts = LAN743X_PTP_N_EXTTS;
1537 ptp->ptp_clock_info.n_per_out = LAN743X_PTP_N_EVENT_CHAN;
1538 ptp->ptp_clock_info.n_pins = n_pins;
1539 ptp->ptp_clock_info.pps = LAN743X_PTP_N_PPS;
1540 ptp->ptp_clock_info.pin_config = ptp->pin_config;
1541 ptp->ptp_clock_info.adjfine = lan743x_ptpci_adjfine;
1542 ptp->ptp_clock_info.adjtime = lan743x_ptpci_adjtime;
1543 ptp->ptp_clock_info.gettime64 = lan743x_ptpci_gettime64;
1544 ptp->ptp_clock_info.getcrosststamp = NULL;
1545 ptp->ptp_clock_info.settime64 = lan743x_ptpci_settime64;
1546 ptp->ptp_clock_info.enable = lan743x_ptpci_enable;
1547 ptp->ptp_clock_info.do_aux_work = lan743x_ptpci_do_aux_work;
1548 ptp->ptp_clock_info.verify = lan743x_ptpci_verify_pin_config;
1549
1550 ptp->ptp_clock = ptp_clock_register(&ptp->ptp_clock_info,
1551 &adapter->pdev->dev);
1552
1553 if (IS_ERR(ptp->ptp_clock)) {
1554 netif_err(adapter, ifup, adapter->netdev,
1555 "ptp_clock_register failed\n");
1556 goto done;
1557 }
1558 ptp->flags |= PTP_FLAG_PTP_CLOCK_REGISTERED;
1559 netif_info(adapter, ifup, adapter->netdev,
1560 "successfully registered ptp clock\n");
1561
1562 return 0;
1563done:
1564 lan743x_ptp_close(adapter);
1565 return ret;
1566}
1567
1568void lan743x_ptp_close(struct lan743x_adapter *adapter)
1569{
1570 struct lan743x_ptp *ptp = &adapter->ptp;
1571 int index;
1572
1573 if (IS_ENABLED(CONFIG_PTP_1588_CLOCK) &&
1574 (ptp->flags & PTP_FLAG_PTP_CLOCK_REGISTERED)) {
1575 ptp_clock_unregister(ptp->ptp_clock);
1576 ptp->ptp_clock = NULL;
1577 ptp->flags &= ~PTP_FLAG_PTP_CLOCK_REGISTERED;
1578 netif_info(adapter, drv, adapter->netdev,
1579 "ptp clock unregister\n");
1580 }
1581
1582 if (ptp->flags & PTP_FLAG_ISR_ENABLED) {
1583 lan743x_csr_write(adapter, PTP_INT_EN_CLR,
1584 PTP_INT_BIT_TX_SWTS_ERR_ |
1585 PTP_INT_BIT_TX_TS_);
1586 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_1588_);
1587 ptp->flags &= ~PTP_FLAG_ISR_ENABLED;
1588 }
1589
1590 /* clean up pending timestamp requests */
1591 lan743x_ptp_tx_ts_complete(adapter);
1592 spin_lock_bh(&ptp->tx_ts_lock);
1593 for (index = 0;
1594 index < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS;
1595 index++) {
1596 struct sk_buff *skb = ptp->tx_ts_skb_queue[index];
1597
1598 dev_kfree_skb(skb);
1599 ptp->tx_ts_skb_queue[index] = NULL;
1600 ptp->tx_ts_seconds_queue[index] = 0;
1601 ptp->tx_ts_nseconds_queue[index] = 0;
1602 }
1603 ptp->tx_ts_skb_queue_size = 0;
1604 ptp->tx_ts_queue_size = 0;
1605 ptp->pending_tx_timestamps = 0;
1606 spin_unlock_bh(&ptp->tx_ts_lock);
1607
1608 lan743x_led_mux_restore(adapter);
1609
1610 lan743x_ptp_disable(adapter);
1611}
1612
1613static void lan743x_ptp_set_sync_ts_insert(struct lan743x_adapter *adapter,
1614 bool ts_insert_enable)
1615{
1616 u32 ptp_tx_mod = lan743x_csr_read(adapter, PTP_TX_MOD);
1617
1618 if (ts_insert_enable)
1619 ptp_tx_mod |= PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_;
1620 else
1621 ptp_tx_mod &= ~PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_;
1622
1623 lan743x_csr_write(adapter, PTP_TX_MOD, ptp_tx_mod);
1624}
1625
1626static bool lan743x_ptp_is_enabled(struct lan743x_adapter *adapter)
1627{
1628 if (lan743x_csr_read(adapter, PTP_CMD_CTL) & PTP_CMD_CTL_PTP_ENABLE_)
1629 return true;
1630 return false;
1631}
1632
1633static void lan743x_ptp_enable(struct lan743x_adapter *adapter)
1634{
1635 struct lan743x_ptp *ptp = &adapter->ptp;
1636
1637 mutex_lock(&ptp->command_lock);
1638
1639 if (lan743x_ptp_is_enabled(adapter)) {
1640 netif_warn(adapter, drv, adapter->netdev,
1641 "PTP already enabled\n");
1642 goto done;
1643 }
1644 lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_ENABLE_);
1645done:
1646 mutex_unlock(&ptp->command_lock);
1647}
1648
1649static void lan743x_ptp_disable(struct lan743x_adapter *adapter)
1650{
1651 struct lan743x_ptp *ptp = &adapter->ptp;
1652
1653 /* Disable Timestamping */
1654 lan743x_rx_set_tstamp_mode(adapter, HWTSTAMP_FILTER_NONE);
1655
1656 mutex_lock(&ptp->command_lock);
1657 if (!lan743x_ptp_is_enabled(adapter)) {
1658 netif_warn(adapter, drv, adapter->netdev,
1659 "PTP already disabled\n");
1660 goto done;
1661 }
1662 lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_DISABLE_);
1663 lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_ENABLE_);
1664done:
1665 mutex_unlock(&ptp->command_lock);
1666}
1667
1668static void lan743x_ptp_reset(struct lan743x_adapter *adapter)
1669{
1670 struct lan743x_ptp *ptp = &adapter->ptp;
1671
1672 mutex_lock(&ptp->command_lock);
1673
1674 if (lan743x_ptp_is_enabled(adapter)) {
1675 netif_err(adapter, drv, adapter->netdev,
1676 "Attempting reset while enabled\n");
1677 goto done;
1678 }
1679
1680 lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_RESET_);
1681 lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_RESET_);
1682done:
1683 mutex_unlock(&ptp->command_lock);
1684}
1685
1686static void lan743x_ptp_clock_set(struct lan743x_adapter *adapter,
1687 u32 seconds, u32 nano_seconds,
1688 u32 sub_nano_seconds)
1689{
1690 struct lan743x_ptp *ptp = &adapter->ptp;
1691
1692 mutex_lock(&ptp->command_lock);
1693
1694 lan743x_csr_write(adapter, PTP_CLOCK_SEC, seconds);
1695 lan743x_csr_write(adapter, PTP_CLOCK_NS, nano_seconds);
1696 lan743x_csr_write(adapter, PTP_CLOCK_SUBNS, sub_nano_seconds);
1697
1698 lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_LOAD_);
1699 lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_LOAD_);
1700 mutex_unlock(&ptp->command_lock);
1701}
1702
1703bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter)
1704{
1705 struct lan743x_ptp *ptp = &adapter->ptp;
1706 bool result = false;
1707
1708 spin_lock(&ptp->tx_ts_lock);
1709 if (ptp->pending_tx_timestamps < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
1710 /* request granted */
1711 ptp->pending_tx_timestamps++;
1712 result = true;
1713 }
1714 spin_unlock(&ptp->tx_ts_lock);
1715 return result;
1716}
1717
1718void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter)
1719{
1720 struct lan743x_ptp *ptp = &adapter->ptp;
1721
1722 spin_lock_bh(&ptp->tx_ts_lock);
1723 if (ptp->pending_tx_timestamps > 0)
1724 ptp->pending_tx_timestamps--;
1725 else
1726 netif_err(adapter, drv, adapter->netdev,
1727 "unrequest failed, pending_tx_timestamps==0\n");
1728 spin_unlock_bh(&ptp->tx_ts_lock);
1729}
1730
1731void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
1732 struct sk_buff *skb, bool ignore_sync)
1733{
1734 lan743x_ptp_tx_ts_enqueue_skb(adapter, skb, ignore_sync);
1735
1736 lan743x_ptp_tx_ts_complete(adapter);
1737}
1738
1739int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1740{
1741 struct lan743x_adapter *adapter = netdev_priv(netdev);
1742 struct hwtstamp_config config;
1743 int ret = 0;
1744 int index;
1745
1746 if (!ifr) {
1747 netif_err(adapter, drv, adapter->netdev,
1748 "SIOCSHWTSTAMP, ifr == NULL\n");
1749 return -EINVAL;
1750 }
1751
1752 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
1753 return -EFAULT;
1754
1755 switch (config.tx_type) {
1756 case HWTSTAMP_TX_OFF:
1757 for (index = 0; index < adapter->used_tx_channels;
1758 index++)
1759 lan743x_tx_set_timestamping_mode(&adapter->tx[index],
1760 false, false);
1761 lan743x_ptp_set_sync_ts_insert(adapter, false);
1762 break;
1763 case HWTSTAMP_TX_ON:
1764 for (index = 0; index < adapter->used_tx_channels;
1765 index++)
1766 lan743x_tx_set_timestamping_mode(&adapter->tx[index],
1767 true, false);
1768 lan743x_ptp_set_sync_ts_insert(adapter, false);
1769 break;
1770 case HWTSTAMP_TX_ONESTEP_SYNC:
1771 for (index = 0; index < adapter->used_tx_channels;
1772 index++)
1773 lan743x_tx_set_timestamping_mode(&adapter->tx[index],
1774 true, true);
1775
1776 lan743x_ptp_set_sync_ts_insert(adapter, true);
1777 break;
1778 case HWTSTAMP_TX_ONESTEP_P2P:
1779 ret = -ERANGE;
1780 break;
1781 default:
1782 netif_warn(adapter, drv, adapter->netdev,
1783 " tx_type = %d, UNKNOWN\n", config.tx_type);
1784 ret = -EINVAL;
1785 break;
1786 }
1787
1788 ret = lan743x_rx_set_tstamp_mode(adapter, config.rx_filter);
1789
1790 if (!ret)
1791 return copy_to_user(ifr->ifr_data, &config,
1792 sizeof(config)) ? -EFAULT : 0;
1793 return ret;
1794}