| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Bryan Whitehead | 5395 | 62.90% | 8 | 34.78% |
| Raju Lakkaraju | 2201 | 25.66% | 4 | 17.39% |
| John Efstathiades | 595 | 6.94% | 1 | 4.35% |
| Yuiko Oshino | 298 | 3.47% | 1 | 4.35% |
| Vishvambar Panth S | 27 | 0.31% | 1 | 4.35% |
| Jacob E Keller | 27 | 0.31% | 2 | 8.70% |
| Arnd Bergmann | 18 | 0.21% | 2 | 8.70% |
| Richard Cochran | 9 | 0.10% | 1 | 4.35% |
| Roelof Berg | 5 | 0.06% | 1 | 4.35% |
| Yue haibing | 1 | 0.01% | 1 | 4.35% |
| David S. Miller | 1 | 0.01% | 1 | 4.35% |
| Total | 8577 | 23 |
/* SPDX-License-Identifier: GPL-2.0+ */ /* Copyright (C) 2018 Microchip Technology Inc. */ #include <linux/netdevice.h> #include <linux/ptp_clock_kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/net_tstamp.h> #include "lan743x_main.h" #include "lan743x_ptp.h" #define LAN743X_LED0_ENABLE 20 /* LED0 offset in HW_CFG */ #define LAN743X_LED_ENABLE(pin) BIT(LAN743X_LED0_ENABLE + (pin)) #define LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB (31249999) #define LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM (2047999934) static bool lan743x_ptp_is_enabled(struct lan743x_adapter *adapter); static void lan743x_ptp_enable(struct lan743x_adapter *adapter); static void lan743x_ptp_disable(struct lan743x_adapter *adapter); static void lan743x_ptp_reset(struct lan743x_adapter *adapter); static void lan743x_ptp_clock_set(struct lan743x_adapter *adapter, u32 seconds, u32 nano_seconds, u32 sub_nano_seconds); static int lan743x_get_channel(u32 ch_map) { int idx; for (idx = 0; idx < 32; idx++) { if (ch_map & (0x1 << idx)) return idx; } return -EINVAL; } int lan743x_gpio_init(struct lan743x_adapter *adapter) { struct lan743x_gpio *gpio = &adapter->gpio; spin_lock_init(&gpio->gpio_lock); gpio->gpio_cfg0 = 0; /* set all direction to input, data = 0 */ gpio->gpio_cfg1 = 0x0FFF0000;/* disable all gpio, set to open drain */ gpio->gpio_cfg2 = 0;/* set all to 1588 low polarity level */ gpio->gpio_cfg3 = 0;/* disable all 1588 output */ lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0); lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1); lan743x_csr_write(adapter, GPIO_CFG2, gpio->gpio_cfg2); lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3); return 0; } static void lan743x_ptp_wait_till_cmd_done(struct lan743x_adapter *adapter, u32 bit_mask) { int timeout = 1000; u32 data = 0; while (timeout && (data = (lan743x_csr_read(adapter, PTP_CMD_CTL) & bit_mask))) { usleep_range(1000, 20000); timeout--; } if (data) { netif_err(adapter, drv, adapter->netdev, "timeout waiting for cmd to be done, cmd = 0x%08X\n", bit_mask); } } static void lan743x_ptp_tx_ts_enqueue_ts(struct lan743x_adapter *adapter, u32 seconds, u32 nano_seconds, u32 header) { struct lan743x_ptp *ptp = &adapter->ptp; spin_lock_bh(&ptp->tx_ts_lock); if (ptp->tx_ts_queue_size < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) { ptp->tx_ts_seconds_queue[ptp->tx_ts_queue_size] = seconds; ptp->tx_ts_nseconds_queue[ptp->tx_ts_queue_size] = nano_seconds; ptp->tx_ts_header_queue[ptp->tx_ts_queue_size] = header; ptp->tx_ts_queue_size++; } else { netif_err(adapter, drv, adapter->netdev, "tx ts queue overflow\n"); } spin_unlock_bh(&ptp->tx_ts_lock); } static void lan743x_ptp_tx_ts_complete(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; struct skb_shared_hwtstamps tstamps; u32 header, nseconds, seconds; bool ignore_sync = false; struct sk_buff *skb; int c, i; spin_lock_bh(&ptp->tx_ts_lock); c = ptp->tx_ts_skb_queue_size; if (c > ptp->tx_ts_queue_size) c = ptp->tx_ts_queue_size; if (c <= 0) goto done; for (i = 0; i < c; i++) { ignore_sync = ((ptp->tx_ts_ignore_sync_queue & BIT(i)) != 0); skb = ptp->tx_ts_skb_queue[i]; nseconds = ptp->tx_ts_nseconds_queue[i]; seconds = ptp->tx_ts_seconds_queue[i]; header = ptp->tx_ts_header_queue[i]; memset(&tstamps, 0, sizeof(tstamps)); tstamps.hwtstamp = ktime_set(seconds, nseconds); if (!ignore_sync || ((header & PTP_TX_MSG_HEADER_MSG_TYPE_) != PTP_TX_MSG_HEADER_MSG_TYPE_SYNC_)) skb_tstamp_tx(skb, &tstamps); dev_kfree_skb(skb); ptp->tx_ts_skb_queue[i] = NULL; ptp->tx_ts_seconds_queue[i] = 0; ptp->tx_ts_nseconds_queue[i] = 0; ptp->tx_ts_header_queue[i] = 0; } /* shift queue */ ptp->tx_ts_ignore_sync_queue >>= c; for (i = c; i < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS; i++) { ptp->tx_ts_skb_queue[i - c] = ptp->tx_ts_skb_queue[i]; ptp->tx_ts_seconds_queue[i - c] = ptp->tx_ts_seconds_queue[i]; ptp->tx_ts_nseconds_queue[i - c] = ptp->tx_ts_nseconds_queue[i]; ptp->tx_ts_header_queue[i - c] = ptp->tx_ts_header_queue[i]; ptp->tx_ts_skb_queue[i] = NULL; ptp->tx_ts_seconds_queue[i] = 0; ptp->tx_ts_nseconds_queue[i] = 0; ptp->tx_ts_header_queue[i] = 0; } ptp->tx_ts_skb_queue_size -= c; ptp->tx_ts_queue_size -= c; done: ptp->pending_tx_timestamps -= c; spin_unlock_bh(&ptp->tx_ts_lock); } static int lan743x_ptp_reserve_event_ch(struct lan743x_adapter *adapter, int event_channel) { struct lan743x_ptp *ptp = &adapter->ptp; int result = -ENODEV; mutex_lock(&ptp->command_lock); if (!(test_bit(event_channel, &ptp->used_event_ch))) { ptp->used_event_ch |= BIT(event_channel); result = event_channel; } else { netif_warn(adapter, drv, adapter->netdev, "attempted to reserved a used event_channel = %d\n", event_channel); } mutex_unlock(&ptp->command_lock); return result; } static void lan743x_ptp_release_event_ch(struct lan743x_adapter *adapter, int event_channel) { struct lan743x_ptp *ptp = &adapter->ptp; mutex_lock(&ptp->command_lock); if (test_bit(event_channel, &ptp->used_event_ch)) { ptp->used_event_ch &= ~BIT(event_channel); } else { netif_warn(adapter, drv, adapter->netdev, "attempted release on a not used event_channel = %d\n", event_channel); } mutex_unlock(&ptp->command_lock); } static void lan743x_ptp_clock_get(struct lan743x_adapter *adapter, u32 *seconds, u32 *nano_seconds, u32 *sub_nano_seconds); static void lan743x_ptp_io_clock_get(struct lan743x_adapter *adapter, u32 *sec, u32 *nsec, u32 *sub_nsec); static void lan743x_ptp_clock_step(struct lan743x_adapter *adapter, s64 time_step_ns); static void lan743x_led_mux_enable(struct lan743x_adapter *adapter, int pin, bool enable) { struct lan743x_ptp *ptp = &adapter->ptp; if (ptp->leds_multiplexed && ptp->led_enabled[pin]) { u32 val = lan743x_csr_read(adapter, HW_CFG); if (enable) val |= LAN743X_LED_ENABLE(pin); else val &= ~LAN743X_LED_ENABLE(pin); lan743x_csr_write(adapter, HW_CFG, val); } } static void lan743x_led_mux_save(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; u32 id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_; if (id_rev == ID_REV_ID_LAN7430_) { int i; u32 val = lan743x_csr_read(adapter, HW_CFG); for (i = 0; i < LAN7430_N_LED; i++) { bool led_enabled = (val & LAN743X_LED_ENABLE(i)) != 0; ptp->led_enabled[i] = led_enabled; } ptp->leds_multiplexed = true; } else { ptp->leds_multiplexed = false; } } static void lan743x_led_mux_restore(struct lan743x_adapter *adapter) { u32 id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_; if (id_rev == ID_REV_ID_LAN7430_) { int i; for (i = 0; i < LAN7430_N_LED; i++) lan743x_led_mux_enable(adapter, i, true); } } static int lan743x_gpio_rsrv_ptp_out(struct lan743x_adapter *adapter, int pin, int event_channel) { struct lan743x_gpio *gpio = &adapter->gpio; unsigned long irq_flags = 0; int bit_mask = BIT(pin); int ret = -EBUSY; spin_lock_irqsave(&gpio->gpio_lock, irq_flags); if (!(gpio->used_bits & bit_mask)) { gpio->used_bits |= bit_mask; gpio->output_bits |= bit_mask; gpio->ptp_bits |= bit_mask; /* assign pin to GPIO function */ lan743x_led_mux_enable(adapter, pin, false); /* set as output, and zero initial value */ gpio->gpio_cfg0 |= GPIO_CFG0_GPIO_DIR_BIT_(pin); gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DATA_BIT_(pin); lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0); /* enable gpio, and set buffer type to push pull */ gpio->gpio_cfg1 &= ~GPIO_CFG1_GPIOEN_BIT_(pin); gpio->gpio_cfg1 |= GPIO_CFG1_GPIOBUF_BIT_(pin); lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1); /* set 1588 polarity to high */ gpio->gpio_cfg2 |= GPIO_CFG2_1588_POL_BIT_(pin); lan743x_csr_write(adapter, GPIO_CFG2, gpio->gpio_cfg2); if (event_channel == 0) { /* use channel A */ gpio->gpio_cfg3 &= ~GPIO_CFG3_1588_CH_SEL_BIT_(pin); } else { /* use channel B */ gpio->gpio_cfg3 |= GPIO_CFG3_1588_CH_SEL_BIT_(pin); } gpio->gpio_cfg3 |= GPIO_CFG3_1588_OE_BIT_(pin); lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3); ret = pin; } spin_unlock_irqrestore(&gpio->gpio_lock, irq_flags); return ret; } static void lan743x_gpio_release(struct lan743x_adapter *adapter, int pin) { struct lan743x_gpio *gpio = &adapter->gpio; unsigned long irq_flags = 0; int bit_mask = BIT(pin); spin_lock_irqsave(&gpio->gpio_lock, irq_flags); if (gpio->used_bits & bit_mask) { gpio->used_bits &= ~bit_mask; if (gpio->output_bits & bit_mask) { gpio->output_bits &= ~bit_mask; if (gpio->ptp_bits & bit_mask) { gpio->ptp_bits &= ~bit_mask; /* disable ptp output */ gpio->gpio_cfg3 &= ~GPIO_CFG3_1588_OE_BIT_(pin); lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3); } /* release gpio output */ /* disable gpio */ gpio->gpio_cfg1 |= GPIO_CFG1_GPIOEN_BIT_(pin); gpio->gpio_cfg1 &= ~GPIO_CFG1_GPIOBUF_BIT_(pin); lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1); /* reset back to input */ gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DIR_BIT_(pin); gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DATA_BIT_(pin); lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0); /* assign pin to original function */ lan743x_led_mux_enable(adapter, pin, true); } } spin_unlock_irqrestore(&gpio->gpio_lock, irq_flags); } static int lan743x_ptpci_adjfine(struct ptp_clock_info *ptpci, long scaled_ppm) { struct lan743x_ptp *ptp = container_of(ptpci, struct lan743x_ptp, ptp_clock_info); struct lan743x_adapter *adapter = container_of(ptp, struct lan743x_adapter, ptp); u32 lan743x_rate_adj = 0; u64 u64_delta; if ((scaled_ppm < (-LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM)) || scaled_ppm > LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM) { return -EINVAL; } /* diff_by_scaled_ppm returns true if the difference is negative */ if (diff_by_scaled_ppm(1ULL << 35, scaled_ppm, &u64_delta)) lan743x_rate_adj = (u32)u64_delta; else lan743x_rate_adj = (u32)u64_delta | PTP_CLOCK_RATE_ADJ_DIR_; lan743x_csr_write(adapter, PTP_CLOCK_RATE_ADJ, lan743x_rate_adj); return 0; } static int lan743x_ptpci_adjtime(struct ptp_clock_info *ptpci, s64 delta) { struct lan743x_ptp *ptp = container_of(ptpci, struct lan743x_ptp, ptp_clock_info); struct lan743x_adapter *adapter = container_of(ptp, struct lan743x_adapter, ptp); lan743x_ptp_clock_step(adapter, delta); return 0; } static int lan743x_ptpci_gettime64(struct ptp_clock_info *ptpci, struct timespec64 *ts) { struct lan743x_ptp *ptp = container_of(ptpci, struct lan743x_ptp, ptp_clock_info); struct lan743x_adapter *adapter = container_of(ptp, struct lan743x_adapter, ptp); u32 nano_seconds = 0; u32 seconds = 0; if (adapter->is_pci11x1x) lan743x_ptp_io_clock_get(adapter, &seconds, &nano_seconds, NULL); else lan743x_ptp_clock_get(adapter, &seconds, &nano_seconds, NULL); ts->tv_sec = seconds; ts->tv_nsec = nano_seconds; return 0; } static int lan743x_ptpci_settime64(struct ptp_clock_info *ptpci, const struct timespec64 *ts) { struct lan743x_ptp *ptp = container_of(ptpci, struct lan743x_ptp, ptp_clock_info); struct lan743x_adapter *adapter = container_of(ptp, struct lan743x_adapter, ptp); u32 nano_seconds = 0; u32 seconds = 0; if (ts) { if (ts->tv_sec > 0xFFFFFFFFLL || ts->tv_sec < 0) { netif_warn(adapter, drv, adapter->netdev, "ts->tv_sec out of range, %lld\n", ts->tv_sec); return -ERANGE; } if (ts->tv_nsec >= 1000000000L || ts->tv_nsec < 0) { netif_warn(adapter, drv, adapter->netdev, "ts->tv_nsec out of range, %ld\n", ts->tv_nsec); return -ERANGE; } seconds = ts->tv_sec; nano_seconds = ts->tv_nsec; lan743x_ptp_clock_set(adapter, seconds, nano_seconds, 0); } else { netif_warn(adapter, drv, adapter->netdev, "ts == NULL\n"); return -EINVAL; } return 0; } static void lan743x_ptp_perout_off(struct lan743x_adapter *adapter, unsigned int index) { struct lan743x_ptp *ptp = &adapter->ptp; u32 general_config = 0; struct lan743x_ptp_perout *perout = &ptp->perout[index]; if (perout->gpio_pin >= 0) { lan743x_gpio_release(adapter, perout->gpio_pin); perout->gpio_pin = -1; } if (perout->event_ch >= 0) { /* set target to far in the future, effectively disabling it */ lan743x_csr_write(adapter, PTP_CLOCK_TARGET_SEC_X(perout->event_ch), 0xFFFF0000); lan743x_csr_write(adapter, PTP_CLOCK_TARGET_NS_X(perout->event_ch), 0); general_config = lan743x_csr_read(adapter, PTP_GENERAL_CONFIG); general_config |= PTP_GENERAL_CONFIG_RELOAD_ADD_X_ (perout->event_ch); lan743x_csr_write(adapter, PTP_GENERAL_CONFIG, general_config); lan743x_ptp_release_event_ch(adapter, perout->event_ch); perout->event_ch = -1; } } static int lan743x_ptp_perout(struct lan743x_adapter *adapter, int on, struct ptp_perout_request *perout_request) { struct lan743x_ptp *ptp = &adapter->ptp; u32 period_sec = 0, period_nsec = 0; u32 start_sec = 0, start_nsec = 0; u32 general_config = 0; int pulse_width = 0; int perout_pin = 0; unsigned int index = perout_request->index; struct lan743x_ptp_perout *perout = &ptp->perout[index]; int ret = 0; /* Reject requests with unsupported flags */ if (perout_request->flags & ~PTP_PEROUT_DUTY_CYCLE) return -EOPNOTSUPP; if (on) { perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT, perout_request->index); if (perout_pin < 0) return -EBUSY; } else { lan743x_ptp_perout_off(adapter, index); return 0; } if (perout->event_ch >= 0 || perout->gpio_pin >= 0) { /* already on, turn off first */ lan743x_ptp_perout_off(adapter, index); } perout->event_ch = lan743x_ptp_reserve_event_ch(adapter, index); if (perout->event_ch < 0) { netif_warn(adapter, drv, adapter->netdev, "Failed to reserve event channel %d for PEROUT\n", index); ret = -EBUSY; goto failed; } perout->gpio_pin = lan743x_gpio_rsrv_ptp_out(adapter, perout_pin, perout->event_ch); if (perout->gpio_pin < 0) { netif_warn(adapter, drv, adapter->netdev, "Failed to reserve gpio %d for PEROUT\n", perout_pin); ret = -EBUSY; goto failed; } start_sec = perout_request->start.sec; start_sec += perout_request->start.nsec / 1000000000; start_nsec = perout_request->start.nsec % 1000000000; period_sec = perout_request->period.sec; period_sec += perout_request->period.nsec / 1000000000; period_nsec = perout_request->period.nsec % 1000000000; if (perout_request->flags & PTP_PEROUT_DUTY_CYCLE) { struct timespec64 ts_on, ts_period; s64 wf_high, period64, half; s32 reminder; ts_on.tv_sec = perout_request->on.sec; ts_on.tv_nsec = perout_request->on.nsec; wf_high = timespec64_to_ns(&ts_on); ts_period.tv_sec = perout_request->period.sec; ts_period.tv_nsec = perout_request->period.nsec; period64 = timespec64_to_ns(&ts_period); if (period64 < 200) { netif_warn(adapter, drv, adapter->netdev, "perout period too small, minimum is 200nS\n"); ret = -EOPNOTSUPP; goto failed; } if (wf_high >= period64) { netif_warn(adapter, drv, adapter->netdev, "pulse width must be smaller than period\n"); ret = -EINVAL; goto failed; } /* Check if we can do 50% toggle on an even value of period. * If the period number is odd, then check if the requested * pulse width is the same as one of pre-defined width values. * Otherwise, return failure. */ half = div_s64_rem(period64, 2, &reminder); if (!reminder) { if (half == wf_high) { /* It's 50% match. Use the toggle option */ pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_TOGGLE_; /* In this case, devide period value by 2 */ ts_period = ns_to_timespec64(div_s64(period64, 2)); period_sec = ts_period.tv_sec; period_nsec = ts_period.tv_nsec; goto program; } } /* if we can't do toggle, then the width option needs to be the exact match */ if (wf_high == 200000000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_; } else if (wf_high == 10000000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_; } else if (wf_high == 1000000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_; } else if (wf_high == 100000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_; } else if (wf_high == 10000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_; } else if (wf_high == 100) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_; } else { netif_warn(adapter, drv, adapter->netdev, "duty cycle specified is not supported\n"); ret = -EOPNOTSUPP; goto failed; } } else { if (period_sec == 0) { if (period_nsec >= 400000000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_; } else if (period_nsec >= 20000000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_; } else if (period_nsec >= 2000000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_; } else if (period_nsec >= 200000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_; } else if (period_nsec >= 20000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_; } else if (period_nsec >= 200) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_; } else { netif_warn(adapter, drv, adapter->netdev, "perout period too small, minimum is 200nS\n"); ret = -EOPNOTSUPP; goto failed; } } else { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_; } } program: /* turn off by setting target far in future */ lan743x_csr_write(adapter, PTP_CLOCK_TARGET_SEC_X(perout->event_ch), 0xFFFF0000); lan743x_csr_write(adapter, PTP_CLOCK_TARGET_NS_X(perout->event_ch), 0); /* Configure to pulse every period */ general_config = lan743x_csr_read(adapter, PTP_GENERAL_CONFIG); general_config &= ~(PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_ (perout->event_ch)); general_config |= PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_ (perout->event_ch, pulse_width); general_config &= ~PTP_GENERAL_CONFIG_RELOAD_ADD_X_ (perout->event_ch); lan743x_csr_write(adapter, PTP_GENERAL_CONFIG, general_config); /* set the reload to one toggle cycle */ lan743x_csr_write(adapter, PTP_CLOCK_TARGET_RELOAD_SEC_X(perout->event_ch), period_sec); lan743x_csr_write(adapter, PTP_CLOCK_TARGET_RELOAD_NS_X(perout->event_ch), period_nsec); /* set the start time */ lan743x_csr_write(adapter, PTP_CLOCK_TARGET_SEC_X(perout->event_ch), start_sec); lan743x_csr_write(adapter, PTP_CLOCK_TARGET_NS_X(perout->event_ch), start_nsec); return 0; failed: lan743x_ptp_perout_off(adapter, index); return ret; } static void lan743x_ptp_io_perout_off(struct lan743x_adapter *adapter, u32 index) { struct lan743x_ptp *ptp = &adapter->ptp; int perout_pin; int event_ch; u32 gen_cfg; int val; event_ch = ptp->ptp_io_perout[index]; if (event_ch >= 0) { /* set target to far in the future, effectively disabling it */ lan743x_csr_write(adapter, PTP_CLOCK_TARGET_SEC_X(event_ch), 0xFFFF0000); lan743x_csr_write(adapter, PTP_CLOCK_TARGET_NS_X(event_ch), 0); gen_cfg = lan743x_csr_read(adapter, HS_PTP_GENERAL_CONFIG); gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_ (event_ch)); gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_EVENT_POL_X_(event_ch)); gen_cfg |= HS_PTP_GENERAL_CONFIG_RELOAD_ADD_X_(event_ch); lan743x_csr_write(adapter, HS_PTP_GENERAL_CONFIG, gen_cfg); if (event_ch) lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_TIMER_INT_B_); else lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_TIMER_INT_A_); lan743x_ptp_release_event_ch(adapter, event_ch); ptp->ptp_io_perout[index] = -1; } perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT, index); /* Deselect Event output */ val = lan743x_csr_read(adapter, PTP_IO_EVENT_OUTPUT_CFG); /* Disables the output of Local Time Target compare events */ val &= ~PTP_IO_EVENT_OUTPUT_CFG_EN_(perout_pin); lan743x_csr_write(adapter, PTP_IO_EVENT_OUTPUT_CFG, val); /* Configured as an opendrain driver*/ val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG); val &= ~PTP_IO_PIN_CFG_OBUF_TYPE_(perout_pin); lan743x_csr_write(adapter, PTP_IO_PIN_CFG, val); /* Dummy read to make sure write operation success */ val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG); } static int lan743x_ptp_io_perout(struct lan743x_adapter *adapter, int on, struct ptp_perout_request *perout_request) { struct lan743x_ptp *ptp = &adapter->ptp; u32 period_sec, period_nsec; u32 start_sec, start_nsec; u32 pulse_sec, pulse_nsec; int pulse_width; int perout_pin; int event_ch; u32 gen_cfg; u32 index; int val; index = perout_request->index; event_ch = ptp->ptp_io_perout[index]; if (on) { perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT, index); if (perout_pin < 0) return -EBUSY; } else { lan743x_ptp_io_perout_off(adapter, index); return 0; } if (event_ch >= LAN743X_PTP_N_EVENT_CHAN) { /* already on, turn off first */ lan743x_ptp_io_perout_off(adapter, index); } event_ch = lan743x_ptp_reserve_event_ch(adapter, index); if (event_ch < 0) { netif_warn(adapter, drv, adapter->netdev, "Failed to reserve event channel %d for PEROUT\n", index); goto failed; } ptp->ptp_io_perout[index] = event_ch; if (perout_request->flags & PTP_PEROUT_DUTY_CYCLE) { pulse_sec = perout_request->on.sec; pulse_sec += perout_request->on.nsec / 1000000000; pulse_nsec = perout_request->on.nsec % 1000000000; } else { pulse_sec = perout_request->period.sec; pulse_sec += perout_request->period.nsec / 1000000000; pulse_nsec = perout_request->period.nsec % 1000000000; } if (pulse_sec == 0) { if (pulse_nsec >= 400000000) { pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_; } else if (pulse_nsec >= 200000000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100MS_; } else if (pulse_nsec >= 100000000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_50MS_; } else if (pulse_nsec >= 20000000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_; } else if (pulse_nsec >= 10000000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_5MS_; } else if (pulse_nsec >= 2000000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_; } else if (pulse_nsec >= 1000000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_500US_; } else if (pulse_nsec >= 200000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_; } else if (pulse_nsec >= 100000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_50US_; } else if (pulse_nsec >= 20000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_; } else if (pulse_nsec >= 10000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_5US_; } else if (pulse_nsec >= 2000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_1US_; } else if (pulse_nsec >= 1000) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_500NS_; } else if (pulse_nsec >= 200) { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_; } else { netif_warn(adapter, drv, adapter->netdev, "perout period too small, min is 200nS\n"); goto failed; } } else { pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_; } /* turn off by setting target far in future */ lan743x_csr_write(adapter, PTP_CLOCK_TARGET_SEC_X(event_ch), 0xFFFF0000); lan743x_csr_write(adapter, PTP_CLOCK_TARGET_NS_X(event_ch), 0); /* Configure to pulse every period */ gen_cfg = lan743x_csr_read(adapter, HS_PTP_GENERAL_CONFIG); gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_(event_ch)); gen_cfg |= HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_ (event_ch, pulse_width); gen_cfg |= HS_PTP_GENERAL_CONFIG_EVENT_POL_X_(event_ch); gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_RELOAD_ADD_X_(event_ch)); lan743x_csr_write(adapter, HS_PTP_GENERAL_CONFIG, gen_cfg); /* set the reload to one toggle cycle */ period_sec = perout_request->period.sec; period_sec += perout_request->period.nsec / 1000000000; period_nsec = perout_request->period.nsec % 1000000000; lan743x_csr_write(adapter, PTP_CLOCK_TARGET_RELOAD_SEC_X(event_ch), period_sec); lan743x_csr_write(adapter, PTP_CLOCK_TARGET_RELOAD_NS_X(event_ch), period_nsec); start_sec = perout_request->start.sec; start_sec += perout_request->start.nsec / 1000000000; start_nsec = perout_request->start.nsec % 1000000000; /* set the start time */ lan743x_csr_write(adapter, PTP_CLOCK_TARGET_SEC_X(event_ch), start_sec); lan743x_csr_write(adapter, PTP_CLOCK_TARGET_NS_X(event_ch), start_nsec); /* Enable LTC Target Read */ val = lan743x_csr_read(adapter, PTP_CMD_CTL); val |= PTP_CMD_CTL_PTP_LTC_TARGET_READ_; lan743x_csr_write(adapter, PTP_CMD_CTL, val); /* Configure as an push/pull driver */ val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG); val |= PTP_IO_PIN_CFG_OBUF_TYPE_(perout_pin); lan743x_csr_write(adapter, PTP_IO_PIN_CFG, val); /* Select Event output */ val = lan743x_csr_read(adapter, PTP_IO_EVENT_OUTPUT_CFG); if (event_ch) /* Channel B as the output */ val |= PTP_IO_EVENT_OUTPUT_CFG_SEL_(perout_pin); else /* Channel A as the output */ val &= ~PTP_IO_EVENT_OUTPUT_CFG_SEL_(perout_pin); /* Enables the output of Local Time Target compare events */ val |= PTP_IO_EVENT_OUTPUT_CFG_EN_(perout_pin); lan743x_csr_write(adapter, PTP_IO_EVENT_OUTPUT_CFG, val); return 0; failed: lan743x_ptp_io_perout_off(adapter, index); return -ENODEV; } static void lan743x_ptp_io_extts_off(struct lan743x_adapter *adapter, u32 index) { struct lan743x_ptp *ptp = &adapter->ptp; struct lan743x_extts *extts; int val; extts = &ptp->extts[index]; /* PTP Interrupt Enable Clear Register */ if (extts->flags & PTP_FALLING_EDGE) val = PTP_INT_EN_FE_EN_CLR_(index); else val = PTP_INT_EN_RE_EN_CLR_(index); lan743x_csr_write(adapter, PTP_INT_EN_CLR, val); /* Disables PTP-IO edge lock */ val = lan743x_csr_read(adapter, PTP_IO_CAP_CONFIG); if (extts->flags & PTP_FALLING_EDGE) { val &= ~PTP_IO_CAP_CONFIG_LOCK_FE_(index); val &= ~PTP_IO_CAP_CONFIG_FE_CAP_EN_(index); } else { val &= ~PTP_IO_CAP_CONFIG_LOCK_RE_(index); val &= ~PTP_IO_CAP_CONFIG_RE_CAP_EN_(index); } lan743x_csr_write(adapter, PTP_IO_CAP_CONFIG, val); /* PTP-IO De-select register */ val = lan743x_csr_read(adapter, PTP_IO_SEL); val &= ~PTP_IO_SEL_MASK_; lan743x_csr_write(adapter, PTP_IO_SEL, val); /* Clear timestamp */ memset(&extts->ts, 0, sizeof(struct timespec64)); extts->flags = 0; } static int lan743x_ptp_io_event_cap_en(struct lan743x_adapter *adapter, u32 flags, u32 channel) { struct lan743x_ptp *ptp = &adapter->ptp; int val; if ((flags & PTP_EXTTS_EDGES) == PTP_EXTTS_EDGES) return -EOPNOTSUPP; mutex_lock(&ptp->command_lock); /* PTP-IO Event Capture Enable */ val = lan743x_csr_read(adapter, PTP_IO_CAP_CONFIG); if (flags & PTP_FALLING_EDGE) { val &= ~PTP_IO_CAP_CONFIG_LOCK_RE_(channel); val &= ~PTP_IO_CAP_CONFIG_RE_CAP_EN_(channel); val |= PTP_IO_CAP_CONFIG_LOCK_FE_(channel); val |= PTP_IO_CAP_CONFIG_FE_CAP_EN_(channel); } else { /* Rising eventing as Default */ val &= ~PTP_IO_CAP_CONFIG_LOCK_FE_(channel); val &= ~PTP_IO_CAP_CONFIG_FE_CAP_EN_(channel); val |= PTP_IO_CAP_CONFIG_LOCK_RE_(channel); val |= PTP_IO_CAP_CONFIG_RE_CAP_EN_(channel); } lan743x_csr_write(adapter, PTP_IO_CAP_CONFIG, val); /* PTP-IO Select */ val = lan743x_csr_read(adapter, PTP_IO_SEL); val &= ~PTP_IO_SEL_MASK_; val |= channel << PTP_IO_SEL_SHIFT_; lan743x_csr_write(adapter, PTP_IO_SEL, val); /* PTP Interrupt Enable Register */ if (flags & PTP_FALLING_EDGE) val = PTP_INT_EN_FE_EN_SET_(channel); else val = PTP_INT_EN_RE_EN_SET_(channel); lan743x_csr_write(adapter, PTP_INT_EN_SET, val); mutex_unlock(&ptp->command_lock); return 0; } static int lan743x_ptp_io_extts(struct lan743x_adapter *adapter, int on, struct ptp_extts_request *extts_request) { struct lan743x_ptp *ptp = &adapter->ptp; u32 flags = extts_request->flags; u32 index = extts_request->index; struct lan743x_extts *extts; int extts_pin; int ret = 0; extts = &ptp->extts[index]; if (on) { extts_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_EXTTS, index); if (extts_pin < 0) return -EBUSY; ret = lan743x_ptp_io_event_cap_en(adapter, flags, index); if (!ret) extts->flags = flags; } else { lan743x_ptp_io_extts_off(adapter, index); } return ret; } static int lan743x_ptpci_enable(struct ptp_clock_info *ptpci, struct ptp_clock_request *request, int on) { struct lan743x_ptp *ptp = container_of(ptpci, struct lan743x_ptp, ptp_clock_info); struct lan743x_adapter *adapter = container_of(ptp, struct lan743x_adapter, ptp); if (request) { switch (request->type) { case PTP_CLK_REQ_EXTTS: if (request->extts.index < ptpci->n_ext_ts) return lan743x_ptp_io_extts(adapter, on, &request->extts); return -EINVAL; case PTP_CLK_REQ_PEROUT: if (request->perout.index < ptpci->n_per_out) { if (adapter->is_pci11x1x) return lan743x_ptp_io_perout(adapter, on, &request->perout); else return lan743x_ptp_perout(adapter, on, &request->perout); } return -EINVAL; case PTP_CLK_REQ_PPS: return -EINVAL; default: netif_err(adapter, drv, adapter->netdev, "request->type == %d, Unknown\n", request->type); break; } } else { netif_err(adapter, drv, adapter->netdev, "request == NULL\n"); } return 0; } static int lan743x_ptpci_verify_pin_config(struct ptp_clock_info *ptp, unsigned int pin, enum ptp_pin_function func, unsigned int chan) { struct lan743x_ptp *lan_ptp = container_of(ptp, struct lan743x_ptp, ptp_clock_info); struct lan743x_adapter *adapter = container_of(lan_ptp, struct lan743x_adapter, ptp); int result = 0; /* Confirm the requested function is supported. Parameter * validation is done by the caller. */ switch (func) { case PTP_PF_NONE: case PTP_PF_PEROUT: break; case PTP_PF_EXTTS: if (!adapter->is_pci11x1x) result = -1; break; case PTP_PF_PHYSYNC: default: result = -1; break; } return result; } static void lan743x_ptp_io_event_clock_get(struct lan743x_adapter *adapter, bool fe, u8 channel, struct timespec64 *ts) { struct lan743x_ptp *ptp = &adapter->ptp; struct lan743x_extts *extts; u32 sec, nsec; mutex_lock(&ptp->command_lock); if (fe) { sec = lan743x_csr_read(adapter, PTP_IO_FE_LTC_SEC_CAP_X); nsec = lan743x_csr_read(adapter, PTP_IO_FE_LTC_NS_CAP_X); } else { sec = lan743x_csr_read(adapter, PTP_IO_RE_LTC_SEC_CAP_X); nsec = lan743x_csr_read(adapter, PTP_IO_RE_LTC_NS_CAP_X); } mutex_unlock(&ptp->command_lock); /* Update Local timestamp */ extts = &ptp->extts[channel]; extts->ts.tv_sec = sec; extts->ts.tv_nsec = nsec; ts->tv_sec = sec; ts->tv_nsec = nsec; } static long lan743x_ptpci_do_aux_work(struct ptp_clock_info *ptpci) { struct lan743x_ptp *ptp = container_of(ptpci, struct lan743x_ptp, ptp_clock_info); struct lan743x_adapter *adapter = container_of(ptp, struct lan743x_adapter, ptp); u32 cap_info, cause, header, nsec, seconds; bool new_timestamp_available = false; struct ptp_clock_event ptp_event; struct timespec64 ts; int ptp_int_sts; int count = 0; int channel; s64 ns; ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS); while ((count < 100) && ptp_int_sts) { count++; if (ptp_int_sts & PTP_INT_BIT_TX_TS_) { cap_info = lan743x_csr_read(adapter, PTP_CAP_INFO); if (PTP_CAP_INFO_TX_TS_CNT_GET_(cap_info) > 0) { seconds = lan743x_csr_read(adapter, PTP_TX_EGRESS_SEC); nsec = lan743x_csr_read(adapter, PTP_TX_EGRESS_NS); cause = (nsec & PTP_TX_EGRESS_NS_CAPTURE_CAUSE_MASK_); header = lan743x_csr_read(adapter, PTP_TX_MSG_HEADER); if (cause == PTP_TX_EGRESS_NS_CAPTURE_CAUSE_SW_) { nsec &= PTP_TX_EGRESS_NS_TS_NS_MASK_; lan743x_ptp_tx_ts_enqueue_ts(adapter, seconds, nsec, header); new_timestamp_available = true; } else if (cause == PTP_TX_EGRESS_NS_CAPTURE_CAUSE_AUTO_) { netif_err(adapter, drv, adapter->netdev, "Auto capture cause not supported\n"); } else { netif_warn(adapter, drv, adapter->netdev, "unknown tx timestamp capture cause\n"); } } else { netif_warn(adapter, drv, adapter->netdev, "TX TS INT but no TX TS CNT\n"); } lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_BIT_TX_TS_); } if (ptp_int_sts & PTP_INT_IO_FE_MASK_) { do { channel = lan743x_get_channel((ptp_int_sts & PTP_INT_IO_FE_MASK_) >> PTP_INT_IO_FE_SHIFT_); if (channel >= 0 && channel < PCI11X1X_PTP_IO_MAX_CHANNELS) { lan743x_ptp_io_event_clock_get(adapter, true, channel, &ts); /* PTP Falling Event post */ ns = timespec64_to_ns(&ts); ptp_event.timestamp = ns; ptp_event.index = channel; ptp_event.type = PTP_CLOCK_EXTTS; ptp_clock_event(ptp->ptp_clock, &ptp_event); lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_IO_FE_SET_ (channel)); ptp_int_sts &= ~(1 << (PTP_INT_IO_FE_SHIFT_ + channel)); } else { /* Clear falling event interrupts */ lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_IO_FE_MASK_); ptp_int_sts &= ~PTP_INT_IO_FE_MASK_; } } while (ptp_int_sts & PTP_INT_IO_FE_MASK_); } if (ptp_int_sts & PTP_INT_IO_RE_MASK_) { do { channel = lan743x_get_channel((ptp_int_sts & PTP_INT_IO_RE_MASK_) >> PTP_INT_IO_RE_SHIFT_); if (channel >= 0 && channel < PCI11X1X_PTP_IO_MAX_CHANNELS) { lan743x_ptp_io_event_clock_get(adapter, false, channel, &ts); /* PTP Rising Event post */ ns = timespec64_to_ns(&ts); ptp_event.timestamp = ns; ptp_event.index = channel; ptp_event.type = PTP_CLOCK_EXTTS; ptp_clock_event(ptp->ptp_clock, &ptp_event); lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_IO_RE_SET_ (channel)); ptp_int_sts &= ~(1 << (PTP_INT_IO_RE_SHIFT_ + channel)); } else { /* Clear Rising event interrupt */ lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_IO_RE_MASK_); ptp_int_sts &= ~PTP_INT_IO_RE_MASK_; } } while (ptp_int_sts & PTP_INT_IO_RE_MASK_); } ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS); } if (new_timestamp_available) lan743x_ptp_tx_ts_complete(adapter); lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_); return -1; } static void lan743x_ptp_clock_get(struct lan743x_adapter *adapter, u32 *seconds, u32 *nano_seconds, u32 *sub_nano_seconds) { struct lan743x_ptp *ptp = &adapter->ptp; mutex_lock(&ptp->command_lock); lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_READ_); lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_READ_); if (seconds) (*seconds) = lan743x_csr_read(adapter, PTP_CLOCK_SEC); if (nano_seconds) (*nano_seconds) = lan743x_csr_read(adapter, PTP_CLOCK_NS); if (sub_nano_seconds) (*sub_nano_seconds) = lan743x_csr_read(adapter, PTP_CLOCK_SUBNS); mutex_unlock(&ptp->command_lock); } static void lan743x_ptp_io_clock_get(struct lan743x_adapter *adapter, u32 *sec, u32 *nsec, u32 *sub_nsec) { struct lan743x_ptp *ptp = &adapter->ptp; mutex_lock(&ptp->command_lock); lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_READ_); lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_READ_); if (sec) (*sec) = lan743x_csr_read(adapter, PTP_LTC_RD_SEC_LO); if (nsec) (*nsec) = lan743x_csr_read(adapter, PTP_LTC_RD_NS); if (sub_nsec) (*sub_nsec) = lan743x_csr_read(adapter, PTP_LTC_RD_SUBNS); mutex_unlock(&ptp->command_lock); } static void lan743x_ptp_clock_step(struct lan743x_adapter *adapter, s64 time_step_ns) { struct lan743x_ptp *ptp = &adapter->ptp; u32 nano_seconds_step = 0; u64 abs_time_step_ns = 0; u32 unsigned_seconds = 0; u32 nano_seconds = 0; u32 remainder = 0; s32 seconds = 0; if (time_step_ns > 15000000000LL) { /* convert to clock set */ if (adapter->is_pci11x1x) lan743x_ptp_io_clock_get(adapter, &unsigned_seconds, &nano_seconds, NULL); else lan743x_ptp_clock_get(adapter, &unsigned_seconds, &nano_seconds, NULL); unsigned_seconds += div_u64_rem(time_step_ns, 1000000000LL, &remainder); nano_seconds += remainder; if (nano_seconds >= 1000000000) { unsigned_seconds++; nano_seconds -= 1000000000; } lan743x_ptp_clock_set(adapter, unsigned_seconds, nano_seconds, 0); return; } else if (time_step_ns < -15000000000LL) { /* convert to clock set */ time_step_ns = -time_step_ns; if (adapter->is_pci11x1x) { lan743x_ptp_io_clock_get(adapter, &unsigned_seconds, &nano_seconds, NULL); } else { lan743x_ptp_clock_get(adapter, &unsigned_seconds, &nano_seconds, NULL); } unsigned_seconds -= div_u64_rem(time_step_ns, 1000000000LL, &remainder); nano_seconds_step = remainder; if (nano_seconds < nano_seconds_step) { unsigned_seconds--; nano_seconds += 1000000000; } nano_seconds -= nano_seconds_step; lan743x_ptp_clock_set(adapter, unsigned_seconds, nano_seconds, 0); return; } /* do clock step */ if (time_step_ns >= 0) { abs_time_step_ns = (u64)(time_step_ns); seconds = (s32)div_u64_rem(abs_time_step_ns, 1000000000, &remainder); nano_seconds = (u32)remainder; } else { abs_time_step_ns = (u64)(-time_step_ns); seconds = -((s32)div_u64_rem(abs_time_step_ns, 1000000000, &remainder)); nano_seconds = (u32)remainder; if (nano_seconds > 0) { /* subtracting nano seconds is not allowed * convert to subtracting from seconds, * and adding to nanoseconds */ seconds--; nano_seconds = (1000000000 - nano_seconds); } } if (nano_seconds > 0) { /* add 8 ns to cover the likely normal increment */ nano_seconds += 8; } if (nano_seconds >= 1000000000) { /* carry into seconds */ seconds++; nano_seconds -= 1000000000; } while (seconds) { mutex_lock(&ptp->command_lock); if (seconds > 0) { u32 adjustment_value = (u32)seconds; if (adjustment_value > 0xF) adjustment_value = 0xF; lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ, PTP_CLOCK_STEP_ADJ_DIR_ | adjustment_value); seconds -= ((s32)adjustment_value); } else { u32 adjustment_value = (u32)(-seconds); if (adjustment_value > 0xF) adjustment_value = 0xF; lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ, adjustment_value); seconds += ((s32)adjustment_value); } lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_); lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_); mutex_unlock(&ptp->command_lock); } if (nano_seconds) { mutex_lock(&ptp->command_lock); lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ, PTP_CLOCK_STEP_ADJ_DIR_ | (nano_seconds & PTP_CLOCK_STEP_ADJ_VALUE_MASK_)); lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLK_STP_NSEC_); lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLK_STP_NSEC_); mutex_unlock(&ptp->command_lock); } } void lan743x_ptp_isr(void *context) { struct lan743x_adapter *adapter = (struct lan743x_adapter *)context; struct lan743x_ptp *ptp = NULL; int enable_flag = 1; u32 ptp_int_sts = 0; ptp = &adapter->ptp; lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_1588_); ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS); ptp_int_sts &= lan743x_csr_read(adapter, PTP_INT_EN_SET); if (ptp_int_sts & PTP_INT_BIT_TX_TS_) { ptp_schedule_worker(ptp->ptp_clock, 0); enable_flag = 0;/* tasklet will re-enable later */ } if (ptp_int_sts & PTP_INT_BIT_TX_SWTS_ERR_) { netif_err(adapter, drv, adapter->netdev, "PTP TX Software Timestamp Error\n"); /* clear int status bit */ lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_BIT_TX_SWTS_ERR_); } if (ptp_int_sts & PTP_INT_BIT_TIMER_B_) { /* clear int status bit */ lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_BIT_TIMER_B_); } if (ptp_int_sts & PTP_INT_BIT_TIMER_A_) { /* clear int status bit */ lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_BIT_TIMER_A_); } if (enable_flag) { /* re-enable isr */ lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_); } } static void lan743x_ptp_tx_ts_enqueue_skb(struct lan743x_adapter *adapter, struct sk_buff *skb, bool ignore_sync) { struct lan743x_ptp *ptp = &adapter->ptp; spin_lock_bh(&ptp->tx_ts_lock); if (ptp->tx_ts_skb_queue_size < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) { ptp->tx_ts_skb_queue[ptp->tx_ts_skb_queue_size] = skb; if (ignore_sync) ptp->tx_ts_ignore_sync_queue |= BIT(ptp->tx_ts_skb_queue_size); ptp->tx_ts_skb_queue_size++; } else { /* this should never happen, so long as the tx channel * calls and honors the result from * lan743x_ptp_request_tx_timestamp */ netif_err(adapter, drv, adapter->netdev, "tx ts skb queue overflow\n"); dev_kfree_skb(skb); } spin_unlock_bh(&ptp->tx_ts_lock); } static void lan743x_ptp_sync_to_system_clock(struct lan743x_adapter *adapter) { struct timespec64 ts; ktime_get_clocktai_ts64(&ts); lan743x_ptp_clock_set(adapter, ts.tv_sec, ts.tv_nsec, 0); } void lan743x_ptp_update_latency(struct lan743x_adapter *adapter, u32 link_speed) { switch (link_speed) { case 10: lan743x_csr_write(adapter, PTP_LATENCY, PTP_LATENCY_TX_SET_(0) | PTP_LATENCY_RX_SET_(0)); break; case 100: lan743x_csr_write(adapter, PTP_LATENCY, PTP_LATENCY_TX_SET_(181) | PTP_LATENCY_RX_SET_(594)); break; case 1000: lan743x_csr_write(adapter, PTP_LATENCY, PTP_LATENCY_TX_SET_(30) | PTP_LATENCY_RX_SET_(525)); break; } } int lan743x_ptp_init(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; int i; mutex_init(&ptp->command_lock); spin_lock_init(&ptp->tx_ts_lock); ptp->used_event_ch = 0; for (i = 0; i < LAN743X_PTP_N_EVENT_CHAN; i++) { ptp->perout[i].event_ch = -1; ptp->perout[i].gpio_pin = -1; } lan743x_led_mux_save(adapter); return 0; } int lan743x_ptp_open(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; int ret = -ENODEV; u32 temp; int i; int n_pins; lan743x_ptp_reset(adapter); lan743x_ptp_sync_to_system_clock(adapter); temp = lan743x_csr_read(adapter, PTP_TX_MOD2); temp |= PTP_TX_MOD2_TX_PTP_CLR_UDPV4_CHKSUM_; lan743x_csr_write(adapter, PTP_TX_MOD2, temp); /* Default Timestamping */ lan743x_rx_set_tstamp_mode(adapter, HWTSTAMP_FILTER_NONE); lan743x_ptp_enable(adapter); lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_); lan743x_csr_write(adapter, PTP_INT_EN_SET, PTP_INT_BIT_TX_SWTS_ERR_ | PTP_INT_BIT_TX_TS_); ptp->flags |= PTP_FLAG_ISR_ENABLED; if (!IS_ENABLED(CONFIG_PTP_1588_CLOCK)) return 0; switch (adapter->csr.id_rev & ID_REV_ID_MASK_) { case ID_REV_ID_LAN7430_: n_pins = LAN7430_N_GPIO; break; case ID_REV_ID_LAN7431_: case ID_REV_ID_A011_: case ID_REV_ID_A041_: n_pins = LAN7431_N_GPIO; break; default: netif_warn(adapter, drv, adapter->netdev, "Unknown LAN743x (%08x). Assuming no GPIO\n", adapter->csr.id_rev); n_pins = 0; break; } if (n_pins > LAN743X_PTP_N_GPIO) n_pins = LAN743X_PTP_N_GPIO; for (i = 0; i < n_pins; i++) { struct ptp_pin_desc *ptp_pin = &ptp->pin_config[i]; snprintf(ptp_pin->name, sizeof(ptp_pin->name), "lan743x_ptp_pin_%02d", i); ptp_pin->index = i; ptp_pin->func = PTP_PF_NONE; } ptp->ptp_clock_info.owner = THIS_MODULE; snprintf(ptp->ptp_clock_info.name, 16, "%pm", adapter->netdev->dev_addr); ptp->ptp_clock_info.max_adj = LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB; ptp->ptp_clock_info.n_alarm = 0; ptp->ptp_clock_info.n_ext_ts = LAN743X_PTP_N_EXTTS; ptp->ptp_clock_info.n_per_out = LAN743X_PTP_N_EVENT_CHAN; ptp->ptp_clock_info.n_pins = n_pins; ptp->ptp_clock_info.pps = LAN743X_PTP_N_PPS; ptp->ptp_clock_info.pin_config = ptp->pin_config; ptp->ptp_clock_info.adjfine = lan743x_ptpci_adjfine; ptp->ptp_clock_info.adjtime = lan743x_ptpci_adjtime; ptp->ptp_clock_info.gettime64 = lan743x_ptpci_gettime64; ptp->ptp_clock_info.getcrosststamp = NULL; ptp->ptp_clock_info.settime64 = lan743x_ptpci_settime64; ptp->ptp_clock_info.enable = lan743x_ptpci_enable; ptp->ptp_clock_info.do_aux_work = lan743x_ptpci_do_aux_work; ptp->ptp_clock_info.verify = lan743x_ptpci_verify_pin_config; ptp->ptp_clock = ptp_clock_register(&ptp->ptp_clock_info, &adapter->pdev->dev); if (IS_ERR(ptp->ptp_clock)) { netif_err(adapter, ifup, adapter->netdev, "ptp_clock_register failed\n"); goto done; } ptp->flags |= PTP_FLAG_PTP_CLOCK_REGISTERED; netif_info(adapter, ifup, adapter->netdev, "successfully registered ptp clock\n"); return 0; done: lan743x_ptp_close(adapter); return ret; } void lan743x_ptp_close(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; int index; if (IS_ENABLED(CONFIG_PTP_1588_CLOCK) && (ptp->flags & PTP_FLAG_PTP_CLOCK_REGISTERED)) { ptp_clock_unregister(ptp->ptp_clock); ptp->ptp_clock = NULL; ptp->flags &= ~PTP_FLAG_PTP_CLOCK_REGISTERED; netif_info(adapter, drv, adapter->netdev, "ptp clock unregister\n"); } if (ptp->flags & PTP_FLAG_ISR_ENABLED) { lan743x_csr_write(adapter, PTP_INT_EN_CLR, PTP_INT_BIT_TX_SWTS_ERR_ | PTP_INT_BIT_TX_TS_); lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_1588_); ptp->flags &= ~PTP_FLAG_ISR_ENABLED; } /* clean up pending timestamp requests */ lan743x_ptp_tx_ts_complete(adapter); spin_lock_bh(&ptp->tx_ts_lock); for (index = 0; index < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS; index++) { struct sk_buff *skb = ptp->tx_ts_skb_queue[index]; dev_kfree_skb(skb); ptp->tx_ts_skb_queue[index] = NULL; ptp->tx_ts_seconds_queue[index] = 0; ptp->tx_ts_nseconds_queue[index] = 0; } ptp->tx_ts_skb_queue_size = 0; ptp->tx_ts_queue_size = 0; ptp->pending_tx_timestamps = 0; spin_unlock_bh(&ptp->tx_ts_lock); lan743x_led_mux_restore(adapter); lan743x_ptp_disable(adapter); } static void lan743x_ptp_set_sync_ts_insert(struct lan743x_adapter *adapter, bool ts_insert_enable) { u32 ptp_tx_mod = lan743x_csr_read(adapter, PTP_TX_MOD); if (ts_insert_enable) ptp_tx_mod |= PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_; else ptp_tx_mod &= ~PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_; lan743x_csr_write(adapter, PTP_TX_MOD, ptp_tx_mod); } static bool lan743x_ptp_is_enabled(struct lan743x_adapter *adapter) { if (lan743x_csr_read(adapter, PTP_CMD_CTL) & PTP_CMD_CTL_PTP_ENABLE_) return true; return false; } static void lan743x_ptp_enable(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; mutex_lock(&ptp->command_lock); if (lan743x_ptp_is_enabled(adapter)) { netif_warn(adapter, drv, adapter->netdev, "PTP already enabled\n"); goto done; } lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_ENABLE_); done: mutex_unlock(&ptp->command_lock); } static void lan743x_ptp_disable(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; /* Disable Timestamping */ lan743x_rx_set_tstamp_mode(adapter, HWTSTAMP_FILTER_NONE); mutex_lock(&ptp->command_lock); if (!lan743x_ptp_is_enabled(adapter)) { netif_warn(adapter, drv, adapter->netdev, "PTP already disabled\n"); goto done; } lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_DISABLE_); lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_ENABLE_); done: mutex_unlock(&ptp->command_lock); } static void lan743x_ptp_reset(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; mutex_lock(&ptp->command_lock); if (lan743x_ptp_is_enabled(adapter)) { netif_err(adapter, drv, adapter->netdev, "Attempting reset while enabled\n"); goto done; } lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_RESET_); lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_RESET_); done: mutex_unlock(&ptp->command_lock); } static void lan743x_ptp_clock_set(struct lan743x_adapter *adapter, u32 seconds, u32 nano_seconds, u32 sub_nano_seconds) { struct lan743x_ptp *ptp = &adapter->ptp; mutex_lock(&ptp->command_lock); lan743x_csr_write(adapter, PTP_CLOCK_SEC, seconds); lan743x_csr_write(adapter, PTP_CLOCK_NS, nano_seconds); lan743x_csr_write(adapter, PTP_CLOCK_SUBNS, sub_nano_seconds); lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_LOAD_); lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_LOAD_); mutex_unlock(&ptp->command_lock); } bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; bool result = false; spin_lock_bh(&ptp->tx_ts_lock); if (ptp->pending_tx_timestamps < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) { /* request granted */ ptp->pending_tx_timestamps++; result = true; } spin_unlock_bh(&ptp->tx_ts_lock); return result; } void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter) { struct lan743x_ptp *ptp = &adapter->ptp; spin_lock_bh(&ptp->tx_ts_lock); if (ptp->pending_tx_timestamps > 0) ptp->pending_tx_timestamps--; else netif_err(adapter, drv, adapter->netdev, "unrequest failed, pending_tx_timestamps==0\n"); spin_unlock_bh(&ptp->tx_ts_lock); } void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter, struct sk_buff *skb, bool ignore_sync) { lan743x_ptp_tx_ts_enqueue_skb(adapter, skb, ignore_sync); lan743x_ptp_tx_ts_complete(adapter); } int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) { struct lan743x_adapter *adapter = netdev_priv(netdev); struct hwtstamp_config config; int ret = 0; int index; if (!ifr) { netif_err(adapter, drv, adapter->netdev, "SIOCSHWTSTAMP, ifr == NULL\n"); return -EINVAL; } if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) return -EFAULT; switch (config.tx_type) { case HWTSTAMP_TX_OFF: for (index = 0; index < adapter->used_tx_channels; index++) lan743x_tx_set_timestamping_mode(&adapter->tx[index], false, false); lan743x_ptp_set_sync_ts_insert(adapter, false); break; case HWTSTAMP_TX_ON: for (index = 0; index < adapter->used_tx_channels; index++) lan743x_tx_set_timestamping_mode(&adapter->tx[index], true, false); lan743x_ptp_set_sync_ts_insert(adapter, false); break; case HWTSTAMP_TX_ONESTEP_SYNC: for (index = 0; index < adapter->used_tx_channels; index++) lan743x_tx_set_timestamping_mode(&adapter->tx[index], true, true); lan743x_ptp_set_sync_ts_insert(adapter, true); break; case HWTSTAMP_TX_ONESTEP_P2P: ret = -ERANGE; break; default: netif_warn(adapter, drv, adapter->netdev, " tx_type = %d, UNKNOWN\n", config.tx_type); ret = -EINVAL; break; } ret = lan743x_rx_set_tstamp_mode(adapter, config.rx_filter); if (!ret) return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? -EFAULT : 0; return ret; }
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1