From patchwork Tue Jan 21 02:20:31 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiawen Wu X-Patchwork-Id: 13945596 X-Patchwork-Delegate: kuba@kernel.org Received: from smtpbguseast2.qq.com (smtpbguseast2.qq.com [54.204.34.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAC2C18E3F for ; Tue, 21 Jan 2025 02:21:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.204.34.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737426080; cv=none; b=Yh0JX4C385BR/iy31VDfjirBctE7quH+/OcUjmXzWppwjmiLSzLD+0pYNU5ZLy8uxN17l+MEODb1Ncaz7xJPj+1wuOcngjKAmCHYT5dJkmYHK8EnKTS00ZLCGHRjWsQEOZpPiOtAQqVhGmxk80pEcWrppo8IkAOFSB42+0w9Azk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737426080; c=relaxed/simple; bh=e7SJElewtCcspsT3VG5tud3ZGOqnSkMj3A7ShVHuRDI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=N2dGl9/BMwERMGkZEukvEMUYV3OkxARL/Ix+amueeGa2/MR7MeUwKPQ6sRSdkizkcSM2f6UuoOgVliH2I3U2NgsG928JFgnOgWFWssxc76xCTmbq8KcT38R9aZ/kwta8BPWTplIeLy3E0p7m8S7dOyMaFAL6A5N3NDxaxDnFReY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=trustnetic.com; spf=pass smtp.mailfrom=trustnetic.com; arc=none smtp.client-ip=54.204.34.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=trustnetic.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=trustnetic.com X-QQ-mid: bizesmtpsz7t1737426062tdvdjmy X-QQ-Originating-IP: MHLWT4WIHvgfs3TUprwVrHmyeWkQJjBabBnUfNUJrgw= Received: from wxdbg.localdomain.com ( [115.197.136.137]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 21 Jan 2025 10:21:00 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 5276951506715011404 From: Jiawen Wu To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, linux@armlinux.org.uk, horms@kernel.org, jacob.e.keller@intel.com, netdev@vger.kernel.org, vadim.fedorenko@linux.dev Cc: mengyuanlou@net-swift.com, Jiawen Wu Subject: [PATCH net-next v6 1/4] net: wangxun: Add support for PTP clock Date: Tue, 21 Jan 2025 10:20:31 +0800 Message-Id: <20250121022034.2321131-2-jiawenwu@trustnetic.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20250121022034.2321131-1-jiawenwu@trustnetic.com> References: <20250121022034.2321131-1-jiawenwu@trustnetic.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtpsz:trustnetic.com:qybglogicsvrgz:qybglogicsvrgz8a-1 X-QQ-XMAILINFO: MrPQPvu31i48sT4iu1S/93ChevPsviH+TSk49dFhuIuobhH53d9seCqi s5tAkEFu9f1QLbHfbYPuJTismSihxsbCQhoYxezl8xUk1jjz2D2uYuY59LfMOzyXJZTWwvy yL9Q9AT9DfAYKy8a8DMkNDoiyOjL1df14mBgrnXf2ZOeDf7zJ5UTsVK9unv2KZT0WrCbzgd 1DMTeBYwbUxHEs9NeBUtLZb/xXPp1WGEVRbHmzZs+vny38z4rMK5YIEheyGG2d1T1Qva7if Y5S+wd2sy+dd4uO4oReHWggBN9A6aMN/r3vmI9UF8Z7OVQ2aTWs4+xiffDz05BRb2nR/789 5mMpXlcINKjI9qk/a7NT96/BoE6M9ZUaAZKp+/PEeW27SwsWv2uRB7lr8qHaG170azgm7Pn FtvGrFUjkKzSgROPUEXd6MGVJ+cYZ6L43f4Lwj3x0n+4GMCQtdhWJ1o30Ouvw+INIos22Um mdYd7pBM3VuVrEikHaal3q4gqzVEoaal/J322VcJNQtFuImTcFHWoikXoj0stqk9Hl7g5sm uzYOq+qhOMrzIuBWgNOVsGd6Cy2UmvQLdOHmHSrV+FLea8pvN8ZeP+Q9uP9XIWHSKqv8w3r dkztsWY37WhY/Fib9tauuLxb0HA+wvM+QJ1NJQff/y4RgjjkIJBlscv4SVoilGX+rwzKLVq lFEy5BovSUfwTLAk/EWlev6NfNHHw744s3ttwxkGBClCs2OFwWwhl4ZHFBZWBNwAKA9niqm rBJxQtx+pexNNt7MQkEf36KU7nMJma3MP6zo2GP/n+R1OTN2Purj2St3outEWD+VreR+/lh eI82GYYrUcUZH3u/F2/PwJz7pMfx1jVAm5WYA91NXDMKWN4A2EN3SRReZDEeRERT+ctzWpN pVAgMNaIYuUuwzTeV/rFbRZGL164Ah/3AJ8CEuEWBSQkuiC/frKbRkMUbITu2JqrAvOwQF+ SMdkQDrl0wQgkTRfaujxtIf1gdDDyy84bUGB7s+QbmrUPYg== X-QQ-XMRINFO: OWPUhxQsoeAVDbp3OJHYyFg= X-QQ-RECHKSPAM: 0 X-Patchwork-Delegate: kuba@kernel.org Implement support for PTP clock on Wangxun NICs. Signed-off-by: Jiawen Wu Reviewed-by: Vadim Fedorenko --- drivers/net/ethernet/wangxun/Kconfig | 1 + drivers/net/ethernet/wangxun/libwx/Makefile | 2 +- .../net/ethernet/wangxun/libwx/wx_ethtool.c | 3 + drivers/net/ethernet/wangxun/libwx/wx_lib.c | 52 +- drivers/net/ethernet/wangxun/libwx/wx_ptp.c | 717 ++++++++++++++++++ drivers/net/ethernet/wangxun/libwx/wx_ptp.h | 19 + drivers/net/ethernet/wangxun/libwx/wx_type.h | 69 ++ drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 8 + drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c | 10 + .../net/ethernet/wangxun/txgbe/txgbe_main.c | 11 + .../net/ethernet/wangxun/txgbe/txgbe_phy.c | 9 + 11 files changed, 895 insertions(+), 6 deletions(-) create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_ptp.c create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_ptp.h diff --git a/drivers/net/ethernet/wangxun/Kconfig b/drivers/net/ethernet/wangxun/Kconfig index e46ccebcfd22..6b60173fe1f5 100644 --- a/drivers/net/ethernet/wangxun/Kconfig +++ b/drivers/net/ethernet/wangxun/Kconfig @@ -18,6 +18,7 @@ if NET_VENDOR_WANGXUN config LIBWX tristate + depends on PTP_1588_CLOCK_OPTIONAL select PAGE_POOL help Common library for Wangxun(R) Ethernet drivers. diff --git a/drivers/net/ethernet/wangxun/libwx/Makefile b/drivers/net/ethernet/wangxun/libwx/Makefile index 42ccd6e4052e..e9f0f1f2309b 100644 --- a/drivers/net/ethernet/wangxun/libwx/Makefile +++ b/drivers/net/ethernet/wangxun/libwx/Makefile @@ -4,4 +4,4 @@ obj-$(CONFIG_LIBWX) += libwx.o -libwx-objs := wx_hw.o wx_lib.o wx_ethtool.o +libwx-objs := wx_hw.o wx_lib.o wx_ethtool.o wx_ptp.o diff --git a/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c b/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c index abe5921dde02..c4b3b00b0926 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c @@ -41,6 +41,9 @@ static const struct wx_stats wx_gstrings_stats[] = { WX_STAT("rx_csum_offload_good_count", hw_csum_rx_good), WX_STAT("rx_csum_offload_errors", hw_csum_rx_error), WX_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed), + WX_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts), + WX_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped), + WX_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared), }; static const struct wx_stats wx_gstrings_fdir_stats[] = { diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c index 2b3d6586f44a..62c837cd3fb7 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c @@ -13,6 +13,7 @@ #include "wx_type.h" #include "wx_lib.h" +#include "wx_ptp.h" #include "wx_hw.h" /* Lookup table mapping the HW PTYPE to the bit field for decoding */ @@ -597,8 +598,17 @@ static void wx_process_skb_fields(struct wx_ring *rx_ring, union wx_rx_desc *rx_desc, struct sk_buff *skb) { + struct wx *wx = netdev_priv(rx_ring->netdev); + wx_rx_hash(rx_ring, rx_desc, skb); wx_rx_checksum(rx_ring, rx_desc, skb); + + if (unlikely(test_bit(WX_FLAG_RX_HWTSTAMP_ENABLED, wx->flags)) && + unlikely(wx_test_staterr(rx_desc, WX_RXD_STAT_TS))) { + wx_ptp_rx_hwtstamp(rx_ring->q_vector->wx, skb); + rx_ring->last_rx_timestamp = jiffies; + } + wx_rx_vlan(rx_ring, rx_desc, skb); skb_record_rx_queue(skb, rx_ring->queue_index); skb->protocol = eth_type_trans(skb, rx_ring->netdev); @@ -705,6 +715,7 @@ static bool wx_clean_tx_irq(struct wx_q_vector *q_vector, { unsigned int budget = q_vector->wx->tx_work_limit; unsigned int total_bytes = 0, total_packets = 0; + struct wx *wx = netdev_priv(tx_ring->netdev); unsigned int i = tx_ring->next_to_clean; struct wx_tx_buffer *tx_buffer; union wx_tx_desc *tx_desc; @@ -737,6 +748,11 @@ static bool wx_clean_tx_irq(struct wx_q_vector *q_vector, total_bytes += tx_buffer->bytecount; total_packets += tx_buffer->gso_segs; + /* schedule check for Tx timestamp */ + if (unlikely(test_bit(WX_STATE_PTP_TX_IN_PROGRESS, wx->state)) && + skb_shinfo(tx_buffer->skb)->tx_flags & SKBTX_IN_PROGRESS) + schedule_work(&wx->ptp_tx_work); + /* free the skb */ napi_consume_skb(tx_buffer->skb, napi_budget); @@ -932,9 +948,9 @@ static void wx_tx_olinfo_status(union wx_tx_desc *tx_desc, tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); } -static void wx_tx_map(struct wx_ring *tx_ring, - struct wx_tx_buffer *first, - const u8 hdr_len) +static int wx_tx_map(struct wx_ring *tx_ring, + struct wx_tx_buffer *first, + const u8 hdr_len) { struct sk_buff *skb = first->skb; struct wx_tx_buffer *tx_buffer; @@ -1013,6 +1029,8 @@ static void wx_tx_map(struct wx_ring *tx_ring, netdev_tx_sent_queue(wx_txring_txq(tx_ring), first->bytecount); + /* set the timestamp */ + first->time_stamp = jiffies; skb_tx_timestamp(skb); /* Force memory writes to complete before letting h/w know there @@ -1038,7 +1056,7 @@ static void wx_tx_map(struct wx_ring *tx_ring, if (netif_xmit_stopped(wx_txring_txq(tx_ring)) || !netdev_xmit_more()) writel(i, tx_ring->tail); - return; + return 0; dma_error: dev_err(tx_ring->dev, "TX DMA map failed\n"); @@ -1062,6 +1080,8 @@ static void wx_tx_map(struct wx_ring *tx_ring, first->skb = NULL; tx_ring->next_to_use = i; + + return -ENOMEM; } static void wx_tx_ctxtdesc(struct wx_ring *tx_ring, u32 vlan_macip_lens, @@ -1486,6 +1506,20 @@ static netdev_tx_t wx_xmit_frame_ring(struct sk_buff *skb, tx_flags |= WX_TX_FLAGS_HW_VLAN; } + if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && + wx->ptp_clock) { + if (wx->tstamp_config.tx_type == HWTSTAMP_TX_ON && + !test_and_set_bit_lock(WX_STATE_PTP_TX_IN_PROGRESS, + wx->state)) { + skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; + tx_flags |= WX_TX_FLAGS_TSTAMP; + wx->ptp_tx_skb = skb_get(skb); + wx->ptp_tx_start = jiffies; + } else { + wx->tx_hwtstamp_skipped++; + } + } + /* record initial flags and protocol */ first->tx_flags = tx_flags; first->protocol = vlan_get_protocol(skb); @@ -1501,12 +1535,20 @@ static netdev_tx_t wx_xmit_frame_ring(struct sk_buff *skb, if (test_bit(WX_FLAG_FDIR_CAPABLE, wx->flags) && tx_ring->atr_sample_rate) wx->atr(tx_ring, first, ptype); - wx_tx_map(tx_ring, first, hdr_len); + if (wx_tx_map(tx_ring, first, hdr_len)) + goto cleanup_tx_tstamp; return NETDEV_TX_OK; out_drop: dev_kfree_skb_any(first->skb); first->skb = NULL; +cleanup_tx_tstamp: + if (unlikely(tx_flags & WX_TX_FLAGS_TSTAMP)) { + dev_kfree_skb_any(wx->ptp_tx_skb); + wx->ptp_tx_skb = NULL; + wx->tx_hwtstamp_errors++; + clear_bit_unlock(WX_STATE_PTP_TX_IN_PROGRESS, wx->state); + } return NETDEV_TX_OK; } diff --git a/drivers/net/ethernet/wangxun/libwx/wx_ptp.c b/drivers/net/ethernet/wangxun/libwx/wx_ptp.c new file mode 100644 index 000000000000..e50209b12845 --- /dev/null +++ b/drivers/net/ethernet/wangxun/libwx/wx_ptp.c @@ -0,0 +1,717 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2015 - 2025 Beijing WangXun Technology Co., Ltd. */ + +#include +#include +#include + +#include "wx_type.h" +#include "wx_ptp.h" +#include "wx_hw.h" + +#define WX_INCVAL_10GB 0xCCCCCC +#define WX_INCVAL_1GB 0x800000 +#define WX_INCVAL_100 0xA00000 +#define WX_INCVAL_10 0xC7F380 +#define WX_INCVAL_EM 0x2000000 + +#define WX_INCVAL_SHIFT_10GB 20 +#define WX_INCVAL_SHIFT_1GB 18 +#define WX_INCVAL_SHIFT_100 15 +#define WX_INCVAL_SHIFT_10 12 +#define WX_INCVAL_SHIFT_EM 22 + +#define WX_OVERFLOW_PERIOD (HZ * 30) +#define WX_PTP_TX_TIMEOUT (HZ) + +#define WX_1588_PPS_WIDTH_EM 120 + +#define WX_NS_PER_SEC 1000000000ULL + +static u64 wx_ptp_timecounter_cyc2time(struct wx *wx, u64 timestamp) +{ + unsigned int seq; + u64 ns; + + do { + seq = read_seqbegin(&wx->hw_tc_lock); + ns = timecounter_cyc2time(&wx->hw_tc, timestamp); + } while (read_seqretry(&wx->hw_tc_lock, seq)); + + return ns; +} + +static u64 wx_ptp_readtime(struct wx *wx, struct ptp_system_timestamp *sts) +{ + u32 timeh1, timeh2, timel; + + timeh1 = rd32ptp(wx, WX_TSC_1588_SYSTIMH); + ptp_read_system_prets(sts); + timel = rd32ptp(wx, WX_TSC_1588_SYSTIML); + ptp_read_system_postts(sts); + timeh2 = rd32ptp(wx, WX_TSC_1588_SYSTIMH); + + if (timeh1 != timeh2) { + ptp_read_system_prets(sts); + timel = rd32ptp(wx, WX_TSC_1588_SYSTIML); + ptp_read_system_prets(sts); + } + return (u64)timel | (u64)timeh2 << 32; +} + +/** + * wx_ptp_adjfine + * @ptp: the ptp clock structure + * @ppb: parts per billion adjustment from base + * Returns 0 on success + * + * Adjust the frequency of the ptp cycle counter by the + * indicated ppb from the base frequency. + */ +static int wx_ptp_adjfine(struct ptp_clock_info *ptp, long ppb) +{ + struct wx *wx = container_of(ptp, struct wx, ptp_caps); + u64 incval, mask; + + smp_mb(); /* Force any pending update before accessing. */ + incval = READ_ONCE(wx->base_incval); + incval = adjust_by_scaled_ppm(incval, ppb); + + mask = (wx->mac.type == wx_mac_em) ? 0x7FFFFFF : 0xFFFFFF; + incval &= mask; + if (wx->mac.type != wx_mac_em) + incval |= 2 << 24; + + wr32ptp(wx, WX_TSC_1588_INC, incval); + + return 0; +} + +/** + * wx_ptp_adjtime + * @ptp: the ptp clock structure + * @delta: offset to adjust the cycle counter by ns + * Returns 0 on success + * + * Adjust the timer by resetting the timecounter structure. + */ +static int wx_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) +{ + struct wx *wx = container_of(ptp, struct wx, ptp_caps); + unsigned long flags; + + write_seqlock_irqsave(&wx->hw_tc_lock, flags); + timecounter_adjtime(&wx->hw_tc, delta); + write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); + + return 0; +} + +/** + * wx_ptp_gettimex64 + * @ptp: the ptp clock structure + * @ts: timespec structure to hold the current time value + * @sts: structure to hold the system time before and after reading the PHC + * Returns 0 on success + * + * Read the timecounter and return the correct value on ns, + * after converting it into a struct timespec64. + */ +static int wx_ptp_gettimex64(struct ptp_clock_info *ptp, + struct timespec64 *ts, + struct ptp_system_timestamp *sts) +{ + struct wx *wx = container_of(ptp, struct wx, ptp_caps); + u64 ns, stamp; + + stamp = wx_ptp_readtime(wx, sts); + ns = wx_ptp_timecounter_cyc2time(wx, stamp); + *ts = ns_to_timespec64(ns); + + return 0; +} + +/** + * wx_ptp_settime64 + * @ptp: the ptp clock structure + * @ts: the timespec64 containing the new time for the cycle counter + * Returns 0 on success + * + * Reset the timecounter to use a new base value instead of the kernel + * wall timer value. + */ +static int wx_ptp_settime64(struct ptp_clock_info *ptp, + const struct timespec64 *ts) +{ + struct wx *wx = container_of(ptp, struct wx, ptp_caps); + unsigned long flags; + u64 ns; + + ns = timespec64_to_ns(ts); + /* reset the timecounter */ + write_seqlock_irqsave(&wx->hw_tc_lock, flags); + timecounter_init(&wx->hw_tc, &wx->hw_cc, ns); + write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); + + return 0; +} + +/** + * wx_ptp_clear_tx_timestamp - utility function to clear Tx timestamp state + * @wx: the private board structure + * + * This function should be called whenever the state related to a Tx timestamp + * needs to be cleared. This helps ensure that all related bits are reset for + * the next Tx timestamp event. + */ +static void wx_ptp_clear_tx_timestamp(struct wx *wx) +{ + rd32ptp(wx, WX_TSC_1588_STMPH); + if (wx->ptp_tx_skb) { + dev_kfree_skb_any(wx->ptp_tx_skb); + wx->ptp_tx_skb = NULL; + } + clear_bit_unlock(WX_STATE_PTP_TX_IN_PROGRESS, wx->state); +} + +/** + * wx_ptp_convert_to_hwtstamp - convert register value to hw timestamp + * @wx: private board structure + * @hwtstamp: stack timestamp structure + * @timestamp: unsigned 64bit system time value + * + * We need to convert the adapter's RX/TXSTMP registers into a hwtstamp value + * which can be used by the stack's ptp functions. + * + * The lock is used to protect consistency of the cyclecounter and the SYSTIME + * registers. However, it does not need to protect against the Rx or Tx + * timestamp registers, as there can't be a new timestamp until the old one is + * unlatched by reading. + * + * In addition to the timestamp in hardware, some controllers need a software + * overflow cyclecounter, and this function takes this into account as well. + **/ +static void wx_ptp_convert_to_hwtstamp(struct wx *wx, + struct skb_shared_hwtstamps *hwtstamp, + u64 timestamp) +{ + u64 ns; + + ns = wx_ptp_timecounter_cyc2time(wx, timestamp); + hwtstamp->hwtstamp = ns_to_ktime(ns); +} + +/** + * wx_ptp_tx_hwtstamp - utility function which checks for TX time stamp + * @wx: the private board struct + * + * if the timestamp is valid, we convert it into the timecounter ns + * value, then store that result into the shhwtstamps structure which + * is passed up the network stack + */ +static void wx_ptp_tx_hwtstamp(struct wx *wx) +{ + struct skb_shared_hwtstamps shhwtstamps; + struct sk_buff *skb = wx->ptp_tx_skb; + u64 regval = 0; + + regval |= (u64)rd32ptp(wx, WX_TSC_1588_STMPL); + regval |= (u64)rd32ptp(wx, WX_TSC_1588_STMPH) << 32; + + wx_ptp_convert_to_hwtstamp(wx, &shhwtstamps, regval); + + wx->ptp_tx_skb = NULL; + clear_bit_unlock(WX_STATE_PTP_TX_IN_PROGRESS, wx->state); + skb_tstamp_tx(skb, &shhwtstamps); + dev_kfree_skb_any(skb); + wx->tx_hwtstamp_pkts++; +} + +/** + * wx_ptp_tx_hwtstamp_work + * @work: pointer to the work struct + * + * This work item polls TSC_1588_CTL valid bit to determine when a Tx hardware + * timestamp has been taken for the current skb. It is necessary, because the + * descriptor's "done" bit does not correlate with the timestamp event. + */ +static void wx_ptp_tx_hwtstamp_work(struct work_struct *work) +{ + struct wx *wx = container_of(work, struct wx, ptp_tx_work); + u32 tsynctxctl; + bool timeout; + + /* we have to have a valid skb to poll for a timestamp */ + if (!wx->ptp_tx_skb) { + wx_ptp_clear_tx_timestamp(wx); + return; + } + + /* stop polling once we have a valid timestamp */ + tsynctxctl = rd32ptp(wx, WX_TSC_1588_CTL); + if (tsynctxctl & WX_TSC_1588_CTL_VALID) { + wx_ptp_tx_hwtstamp(wx); + return; + } + + timeout = time_is_before_jiffies(wx->ptp_tx_start + WX_PTP_TX_TIMEOUT); + /* check timeout last in case timestamp event just occurred */ + if (timeout) { + wx_ptp_clear_tx_timestamp(wx); + wx->tx_hwtstamp_timeouts++; + dev_warn(&wx->pdev->dev, "clearing Tx Timestamp hang\n"); + } else { + /* reschedule to keep checking until we timeout */ + schedule_work(&wx->ptp_tx_work); + } +} + +/** + * wx_ptp_create_clock + * @wx: the private board structure + * + * Returns 0 on success, negative value on failure + * + * This function performs setup of the user entry point function table and + * initalizes the PTP clock device used by userspace to access the clock-like + * features of the PTP core. It will be called by wx_ptp_init, and may + * re-use a previously initialized clock (such as during a suspend/resume + * cycle). + */ +static long wx_ptp_create_clock(struct wx *wx) +{ + struct net_device *netdev = wx->netdev; + long err; + + /* do nothing if we already have a clock device */ + if (!IS_ERR_OR_NULL(wx->ptp_clock)) + return 0; + + snprintf(wx->ptp_caps.name, sizeof(wx->ptp_caps.name), + "%s", netdev->name); + wx->ptp_caps.owner = THIS_MODULE; + wx->ptp_caps.n_alarm = 0; + wx->ptp_caps.n_ext_ts = 0; + wx->ptp_caps.n_per_out = 0; + wx->ptp_caps.pps = 0; + wx->ptp_caps.adjfine = wx_ptp_adjfine; + wx->ptp_caps.adjtime = wx_ptp_adjtime; + wx->ptp_caps.gettimex64 = wx_ptp_gettimex64; + wx->ptp_caps.settime64 = wx_ptp_settime64; + if (wx->mac.type == wx_mac_em) + wx->ptp_caps.max_adj = 500000000; + else + wx->ptp_caps.max_adj = 250000000; + + wx->ptp_clock = ptp_clock_register(&wx->ptp_caps, &wx->pdev->dev); + if (IS_ERR(wx->ptp_clock)) { + err = PTR_ERR(wx->ptp_clock); + wx->ptp_clock = NULL; + wx_err(wx, "ptp clock register failed\n"); + return err; + } else if (wx->ptp_clock) { + dev_info(&wx->pdev->dev, "registered PHC device on %s\n", + netdev->name); + } + + /* Set the default timestamp mode to disabled here. We do this in + * create_clock instead of initialization, because we don't want to + * override the previous settings during a suspend/resume cycle. + */ + wx->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; + wx->tstamp_config.tx_type = HWTSTAMP_TX_OFF; + + return 0; +} + +/** + * wx_ptp_set_timestamp_mode - setup the hardware for the requested mode + * @wx: the private board structure + * @config: the hwtstamp configuration requested + * + * Returns 0 on success, negative on failure + * + * Outgoing time stamping can be enabled and disabled. Play nice and + * disable it when requested, although it shouldn't cause any overhead + * when no packet needs it. At most one packet in the queue may be + * marked for time stamping, otherwise it would be impossible to tell + * for sure to which packet the hardware time stamp belongs. + * + * Incoming time stamping has to be configured via the hardware + * filters. Not all combinations are supported, in particular event + * type has to be specified. Matching the kind of event packet is + * not supported, with the exception of "all V2 events regardless of + * level 2 or 4". + * + * Since hardware always timestamps Path delay packets when timestamping V2 + * packets, regardless of the type specified in the register, only use V2 + * Event mode. This more accurately tells the user what the hardware is going + * to do anyways. + * + * Note: this may modify the hwtstamp configuration towards a more general + * mode, if required to support the specifically requested mode. + */ +static int wx_ptp_set_timestamp_mode(struct wx *wx, + struct kernel_hwtstamp_config *config) +{ + u32 tsync_tx_ctl = WX_TSC_1588_CTL_ENABLED; + u32 tsync_rx_ctl = WX_PSR_1588_CTL_ENABLED; + DECLARE_BITMAP(flags, WX_PF_FLAGS_NBITS); + u32 tsync_rx_mtrl = PTP_EV_PORT << 16; + bool is_l2 = false; + u32 regval; + + memcpy(flags, wx->flags, sizeof(wx->flags)); + + switch (config->tx_type) { + case HWTSTAMP_TX_OFF: + tsync_tx_ctl = 0; + break; + case HWTSTAMP_TX_ON: + break; + default: + return -ERANGE; + } + + switch (config->rx_filter) { + case HWTSTAMP_FILTER_NONE: + tsync_rx_ctl = 0; + tsync_rx_mtrl = 0; + clear_bit(WX_FLAG_RX_HWTSTAMP_ENABLED, flags); + clear_bit(WX_FLAG_RX_HWTSTAMP_IN_REGISTER, flags); + break; + case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: + tsync_rx_ctl |= WX_PSR_1588_CTL_TYPE_L4_V1; + tsync_rx_mtrl |= WX_PSR_1588_MSG_V1_SYNC; + set_bit(WX_FLAG_RX_HWTSTAMP_ENABLED, flags); + set_bit(WX_FLAG_RX_HWTSTAMP_IN_REGISTER, flags); + break; + case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: + tsync_rx_ctl |= WX_PSR_1588_CTL_TYPE_L4_V1; + tsync_rx_mtrl |= WX_PSR_1588_MSG_V1_DELAY_REQ; + set_bit(WX_FLAG_RX_HWTSTAMP_ENABLED, flags); + set_bit(WX_FLAG_RX_HWTSTAMP_IN_REGISTER, flags); + break; + case HWTSTAMP_FILTER_PTP_V2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: + tsync_rx_ctl |= WX_PSR_1588_CTL_TYPE_EVENT_V2; + is_l2 = true; + config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; + set_bit(WX_FLAG_RX_HWTSTAMP_ENABLED, flags); + set_bit(WX_FLAG_RX_HWTSTAMP_IN_REGISTER, flags); + break; + default: + /* register PSR_1588_MSG must be set in order to do V1 packets, + * therefore it is not possible to time stamp both V1 Sync and + * Delay_Req messages unless hardware supports timestamping all + * packets => return error + */ + config->rx_filter = HWTSTAMP_FILTER_NONE; + return -ERANGE; + } + + /* define ethertype filter for timestamping L2 packets */ + if (is_l2) + wr32(wx, WX_PSR_ETYPE_SWC(WX_PSR_ETYPE_SWC_FILTER_1588), + (WX_PSR_ETYPE_SWC_FILTER_EN | /* enable filter */ + WX_PSR_ETYPE_SWC_1588 | /* enable timestamping */ + ETH_P_1588)); /* 1588 eth protocol type */ + else + wr32(wx, WX_PSR_ETYPE_SWC(WX_PSR_ETYPE_SWC_FILTER_1588), 0); + + /* enable/disable TX */ + regval = rd32ptp(wx, WX_TSC_1588_CTL); + regval &= ~WX_TSC_1588_CTL_ENABLED; + regval |= tsync_tx_ctl; + wr32ptp(wx, WX_TSC_1588_CTL, regval); + + /* enable/disable RX */ + regval = rd32(wx, WX_PSR_1588_CTL); + regval &= ~(WX_PSR_1588_CTL_ENABLED | WX_PSR_1588_CTL_TYPE_MASK); + regval |= tsync_rx_ctl; + wr32(wx, WX_PSR_1588_CTL, regval); + + /* define which PTP packets are time stamped */ + wr32(wx, WX_PSR_1588_MSG, tsync_rx_mtrl); + + WX_WRITE_FLUSH(wx); + + /* configure adapter flags only when HW is actually configured */ + memcpy(wx->flags, flags, sizeof(wx->flags)); + + /* clear TX/RX timestamp state, just to be sure */ + wx_ptp_clear_tx_timestamp(wx); + rd32(wx, WX_PSR_1588_STMPH); + + return 0; +} + +/** + * wx_ptp_read - read raw cycle counter (to be used by time counter) + * @hw_cc: the cyclecounter structure + * + * this function reads the cyclecounter registers and is called by the + * cyclecounter structure used to construct a ns counter from the + * arbitrary fixed point registers + */ +static u64 wx_ptp_read(const struct cyclecounter *hw_cc) +{ + struct wx *wx = container_of(hw_cc, struct wx, hw_cc); + + return wx_ptp_readtime(wx, NULL); +} + +static void wx_ptp_link_speed_adjust(struct wx *wx, u32 *shift, u32 *incval) +{ + if (wx->mac.type == wx_mac_em) { + *shift = WX_INCVAL_SHIFT_EM; + *incval = WX_INCVAL_EM; + return; + } + + switch (wx->speed) { + case SPEED_10: + *shift = WX_INCVAL_SHIFT_10; + *incval = WX_INCVAL_10; + break; + case SPEED_100: + *shift = WX_INCVAL_SHIFT_100; + *incval = WX_INCVAL_100; + break; + case SPEED_1000: + *shift = WX_INCVAL_SHIFT_1GB; + *incval = WX_INCVAL_1GB; + break; + case SPEED_10000: + default: + *shift = WX_INCVAL_SHIFT_10GB; + *incval = WX_INCVAL_10GB; + break; + } +} + +/** + * wx_ptp_reset_cyclecounter - create the cycle counter from hw + * @wx: pointer to the wx structure + * + * This function should be called to set the proper values for the TSC_1588_INC + * register and tell the cyclecounter structure what the tick rate of SYSTIME + * is. It does not directly modify SYSTIME registers or the timecounter + * structure. It should be called whenever a new TSC_1588_INC value is + * necessary, such as during initialization or when the link speed changes. + */ +void wx_ptp_reset_cyclecounter(struct wx *wx) +{ + u32 incval = 0, mask = 0; + struct cyclecounter cc; + unsigned long flags; + + /* For some of the boards below this mask is technically incorrect. + * The timestamp mask overflows at approximately 61bits. However the + * particular hardware does not overflow on an even bitmask value. + * Instead, it overflows due to conversion of upper 32bits billions of + * cycles. Timecounters are not really intended for this purpose so + * they do not properly function if the overflow point isn't 2^N-1. + * However, the actual SYSTIME values in question take ~138 years to + * overflow. In practice this means they won't actually overflow. A + * proper fix to this problem would require modification of the + * timecounter delta calculations. + */ + cc.mask = CLOCKSOURCE_MASK(64); + cc.mult = 1; + cc.shift = 0; + + cc.read = wx_ptp_read; + wx_ptp_link_speed_adjust(wx, &cc.shift, &incval); + + /* update the base incval used to calculate frequency adjustment */ + WRITE_ONCE(wx->base_incval, incval); + + mask = (wx->mac.type == wx_mac_em) ? 0x7FFFFFF : 0xFFFFFF; + incval &= mask; + if (wx->mac.type != wx_mac_em) + incval |= 2 << 24; + wr32ptp(wx, WX_TSC_1588_INC, incval); + + smp_mb(); /* Force the above update. */ + + /* need lock to prevent incorrect read while modifying cyclecounter */ + write_seqlock_irqsave(&wx->hw_tc_lock, flags); + memcpy(&wx->hw_cc, &cc, sizeof(wx->hw_cc)); + write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); +} +EXPORT_SYMBOL(wx_ptp_reset_cyclecounter); + +/** + * wx_ptp_reset + * @wx: the private board structure + * + * When the MAC resets, all of the hardware configuration for timesync is + * reset. This function should be called to re-enable the device for PTP, + * using the last known settings. However, we do lose the current clock time, + * so we fallback to resetting it based on the kernel's realtime clock. + * + * This function will maintain the hwtstamp_config settings, and it retriggers + * the SDP output if it's enabled. + */ +void wx_ptp_reset(struct wx *wx) +{ + unsigned long flags; + + /* reset the hardware timestamping mode */ + wx_ptp_set_timestamp_mode(wx, &wx->tstamp_config); + wx_ptp_reset_cyclecounter(wx); + + wr32ptp(wx, WX_TSC_1588_SYSTIML, 0); + wr32ptp(wx, WX_TSC_1588_SYSTIMH, 0); + WX_WRITE_FLUSH(wx); + + write_seqlock_irqsave(&wx->hw_tc_lock, flags); + timecounter_init(&wx->hw_tc, &wx->hw_cc, + ktime_to_ns(ktime_get_real())); + write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); +} +EXPORT_SYMBOL(wx_ptp_reset); + +/** + * wx_ptp_init + * @wx: the private board structure + * + * This function performs the required steps for enabling ptp + * support. If ptp support has already been loaded it simply calls the + * cyclecounter init routine and exits. + */ +void wx_ptp_init(struct wx *wx) +{ + /* Initialize the seqlock_t first, since the user might call the clock + * functions any time after we've initialized the ptp clock device. + */ + seqlock_init(&wx->hw_tc_lock); + + /* obtain a ptp clock device, or re-use an existing device */ + if (wx_ptp_create_clock(wx)) + return; + + /* we have a clock, so we can initialize work for timestamps now */ + INIT_WORK(&wx->ptp_tx_work, wx_ptp_tx_hwtstamp_work); + + wx->tx_hwtstamp_pkts = 0; + wx->tx_hwtstamp_timeouts = 0; + wx->tx_hwtstamp_skipped = 0; + wx->tx_hwtstamp_errors = 0; + wx->rx_hwtstamp_cleared = 0; + /* reset the ptp related hardware bits */ + wx_ptp_reset(wx); + + /* enter the WX_STATE_PTP_RUNNING state */ + set_bit(WX_STATE_PTP_RUNNING, wx->state); +} +EXPORT_SYMBOL(wx_ptp_init); + +/** + * wx_ptp_suspend - stop ptp work items + * @wx: pointer to wx struct + * + * This function suspends ptp activity, and prevents more work from being + * generated, but does not destroy the clock device. + */ +void wx_ptp_suspend(struct wx *wx) +{ + /* leave the WX_STATE_PTP_RUNNING STATE */ + if (!test_and_clear_bit(WX_STATE_PTP_RUNNING, wx->state)) + return; + + cancel_work_sync(&wx->ptp_tx_work); + wx_ptp_clear_tx_timestamp(wx); +} +EXPORT_SYMBOL(wx_ptp_suspend); + +/** + * wx_ptp_stop - destroy the ptp_clock device + * @wx: pointer to wx struct + * + * Completely destroy the ptp_clock device, and disable all PTP related + * features. Intended to be run when the device is being closed. + */ +void wx_ptp_stop(struct wx *wx) +{ + /* first, suspend ptp activity */ + wx_ptp_suspend(wx); + + /* now destroy the ptp clock device */ + if (wx->ptp_clock) { + ptp_clock_unregister(wx->ptp_clock); + wx->ptp_clock = NULL; + dev_info(&wx->pdev->dev, "removed PHC on %s\n", wx->netdev->name); + } +} +EXPORT_SYMBOL(wx_ptp_stop); + +/** + * wx_ptp_rx_hwtstamp - utility function which checks for RX time stamp + * @wx: pointer to wx struct + * @skb: particular skb to send timestamp with + * + * if the timestamp is valid, we convert it into the timecounter ns + * value, then store that result into the shhwtstamps structure which + * is passed up the network stack + */ +void wx_ptp_rx_hwtstamp(struct wx *wx, struct sk_buff *skb) +{ + u64 regval = 0; + u32 tsyncrxctl; + + /* Read the tsyncrxctl register afterwards in order to prevent taking an + * I/O hit on every packet. + */ + tsyncrxctl = rd32(wx, WX_PSR_1588_CTL); + if (!(tsyncrxctl & WX_PSR_1588_CTL_VALID)) + return; + + regval |= (u64)rd32(wx, WX_PSR_1588_STMPL); + regval |= (u64)rd32(wx, WX_PSR_1588_STMPH) << 32; + + wx_ptp_convert_to_hwtstamp(wx, skb_hwtstamps(skb), regval); +} + +int wx_hwtstamp_get(struct net_device *dev, + struct kernel_hwtstamp_config *cfg) +{ + struct wx *wx = netdev_priv(dev); + + if (!netif_running(dev)) + return -EINVAL; + + *cfg = wx->tstamp_config; + + return 0; +} +EXPORT_SYMBOL(wx_hwtstamp_get); + +int wx_hwtstamp_set(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) +{ + struct wx *wx = netdev_priv(dev); + int err; + + if (!netif_running(dev)) + return -EINVAL; + + err = wx_ptp_set_timestamp_mode(wx, cfg); + if (err) + return err; + + /* save these settings for future reference */ + memcpy(&wx->tstamp_config, cfg, sizeof(wx->tstamp_config)); + + return 0; +} +EXPORT_SYMBOL(wx_hwtstamp_set); diff --git a/drivers/net/ethernet/wangxun/libwx/wx_ptp.h b/drivers/net/ethernet/wangxun/libwx/wx_ptp.h new file mode 100644 index 000000000000..8742d2797363 --- /dev/null +++ b/drivers/net/ethernet/wangxun/libwx/wx_ptp.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2019 - 2025 Beijing WangXun Technology Co., Ltd. */ + +#ifndef _WX_PTP_H_ +#define _WX_PTP_H_ + +void wx_ptp_reset_cyclecounter(struct wx *wx); +void wx_ptp_reset(struct wx *wx); +void wx_ptp_init(struct wx *wx); +void wx_ptp_suspend(struct wx *wx); +void wx_ptp_stop(struct wx *wx); +void wx_ptp_rx_hwtstamp(struct wx *wx, struct sk_buff *skb); +int wx_hwtstamp_get(struct net_device *dev, + struct kernel_hwtstamp_config *cfg); +int wx_hwtstamp_set(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack); + +#endif /* _WX_PTP_H_ */ diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h index b54bffda027b..9199317f7175 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_type.h +++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h @@ -4,6 +4,8 @@ #ifndef _WX_TYPE_H_ #define _WX_TYPE_H_ +#include +#include #include #include #include @@ -180,6 +182,23 @@ #define WX_PSR_VLAN_CTL 0x15088 #define WX_PSR_VLAN_CTL_CFIEN BIT(29) /* bit 29 */ #define WX_PSR_VLAN_CTL_VFE BIT(30) /* bit 30 */ +/* EType Queue Filter */ +#define WX_PSR_ETYPE_SWC(_i) (0x15128 + ((_i) * 4)) +#define WX_PSR_ETYPE_SWC_FILTER_1588 3 +#define WX_PSR_ETYPE_SWC_FILTER_EN BIT(31) +#define WX_PSR_ETYPE_SWC_1588 BIT(30) +/* 1588 */ +#define WX_PSR_1588_MSG 0x15120 +#define WX_PSR_1588_MSG_V1_SYNC FIELD_PREP(GENMASK(7, 0), 0) +#define WX_PSR_1588_MSG_V1_DELAY_REQ FIELD_PREP(GENMASK(7, 0), 1) +#define WX_PSR_1588_STMPL 0x151E8 +#define WX_PSR_1588_STMPH 0x151A4 +#define WX_PSR_1588_CTL 0x15188 +#define WX_PSR_1588_CTL_ENABLED BIT(4) +#define WX_PSR_1588_CTL_TYPE_MASK GENMASK(3, 1) +#define WX_PSR_1588_CTL_TYPE_L4_V1 FIELD_PREP(GENMASK(3, 1), 1) +#define WX_PSR_1588_CTL_TYPE_EVENT_V2 FIELD_PREP(GENMASK(3, 1), 5) +#define WX_PSR_1588_CTL_VALID BIT(0) /* mcasst/ucast overflow tbl */ #define WX_PSR_MC_TBL(_i) (0x15200 + ((_i) * 4)) #define WX_PSR_UC_TBL(_i) (0x15400 + ((_i) * 4)) @@ -253,6 +272,15 @@ #define WX_TSC_ST_SECTX_RDY BIT(0) #define WX_TSC_BUF_AE 0x1D00C #define WX_TSC_BUF_AE_THR GENMASK(9, 0) +/* 1588 */ +#define WX_TSC_1588_CTL 0x11F00 +#define WX_TSC_1588_CTL_ENABLED BIT(4) +#define WX_TSC_1588_CTL_VALID BIT(0) +#define WX_TSC_1588_STMPL 0x11F04 +#define WX_TSC_1588_STMPH 0x11F08 +#define WX_TSC_1588_SYSTIML 0x11F0C +#define WX_TSC_1588_SYSTIMH 0x11F10 +#define WX_TSC_1588_INC 0x11F14 /************************************** MNG ********************************/ #define WX_MNG_SWFW_SYNC 0x1E008 @@ -460,6 +488,7 @@ enum WX_MSCA_CMD_value { #define WX_RXD_STAT_L4CS BIT(7) /* L4 xsum calculated */ #define WX_RXD_STAT_IPCS BIT(8) /* IP xsum calculated */ #define WX_RXD_STAT_OUTERIPCS BIT(10) /* Cloud IP xsum calculated*/ +#define WX_RXD_STAT_TS BIT(14) /* IEEE1588 Time Stamp */ #define WX_RXD_ERR_OUTERIPER BIT(26) /* CRC IP Header error */ #define WX_RXD_ERR_RXE BIT(29) /* Any MAC Error */ @@ -863,6 +892,7 @@ struct wx_tx_context_desc { */ struct wx_tx_buffer { union wx_tx_desc *next_to_watch; + unsigned long time_stamp; struct sk_buff *skb; unsigned int bytecount; unsigned short gso_segs; @@ -924,6 +954,7 @@ struct wx_ring { unsigned int size; /* length in bytes */ u16 count; /* amount of descriptors */ + unsigned long last_rx_timestamp; u8 queue_index; /* needed for multiqueue queue management */ u8 reg_idx; /* holds the special value that gets @@ -1026,6 +1057,8 @@ struct wx_hw_stats { enum wx_state { WX_STATE_RESETTING, + WX_STATE_PTP_RUNNING, + WX_STATE_PTP_TX_IN_PROGRESS, WX_STATE_NBITS, /* must be last */ }; @@ -1033,6 +1066,8 @@ enum wx_pf_flags { WX_FLAG_FDIR_CAPABLE, WX_FLAG_FDIR_HASH, WX_FLAG_FDIR_PERFECT, + WX_FLAG_RX_HWTSTAMP_ENABLED, + WX_FLAG_RX_HWTSTAMP_IN_REGISTER, WX_PF_FLAGS_NBITS /* must be last */ }; @@ -1133,6 +1168,22 @@ struct wx { void (*atr)(struct wx_ring *ring, struct wx_tx_buffer *first, u8 ptype); void (*configure_fdir)(struct wx *wx); void (*do_reset)(struct net_device *netdev); + + u32 base_incval; + u32 tx_hwtstamp_pkts; + u32 tx_hwtstamp_timeouts; + u32 tx_hwtstamp_skipped; + u32 tx_hwtstamp_errors; + u32 rx_hwtstamp_cleared; + unsigned long ptp_tx_start; + seqlock_t hw_tc_lock; /* seqlock for ptp */ + struct cyclecounter hw_cc; + struct timecounter hw_tc; + struct ptp_clock *ptp_clock; + struct ptp_clock_info ptp_caps; + struct kernel_hwtstamp_config tstamp_config; + struct work_struct ptp_tx_work; + struct sk_buff *ptp_tx_skb; }; #define WX_INTR_ALL (~0ULL) @@ -1177,6 +1228,24 @@ rd64(struct wx *wx, u32 reg) return (lsb | msb << 32); } +static inline u32 +rd32ptp(struct wx *wx, u32 reg) +{ + if (wx->mac.type == wx_mac_em) + return rd32(wx, reg); + + return rd32(wx, reg + 0xB500); +} + +static inline void +wr32ptp(struct wx *wx, u32 reg, u32 value) +{ + if (wx->mac.type == wx_mac_em) + return wr32(wx, reg, value); + + return wr32(wx, reg + 0xB500, value); +} + /* On some domestic CPU platforms, sometimes IO is not synchronized with * flushing memory, here use readl() to flush PCI read and write. */ diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c index 53aeae2f884b..c60a96cc3508 100644 --- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c @@ -14,6 +14,7 @@ #include "../libwx/wx_type.h" #include "../libwx/wx_hw.h" #include "../libwx/wx_lib.h" +#include "../libwx/wx_ptp.h" #include "ngbe_type.h" #include "ngbe_mdio.h" #include "ngbe_hw.h" @@ -317,6 +318,8 @@ void ngbe_down(struct wx *wx) { phylink_stop(wx->phylink); ngbe_disable_device(wx); + if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) + wx_ptp_reset(wx); wx_clean_all_tx_rings(wx); wx_clean_all_rx_rings(wx); } @@ -379,6 +382,8 @@ static int ngbe_open(struct net_device *netdev) if (err) goto err_dis_phy; + wx_ptp_init(wx); + ngbe_up(wx); return 0; @@ -407,6 +412,7 @@ static int ngbe_close(struct net_device *netdev) { struct wx *wx = netdev_priv(netdev); + wx_ptp_stop(wx); ngbe_down(wx); wx_free_irq(wx); wx_free_isb_resources(wx); @@ -507,6 +513,8 @@ static const struct net_device_ops ngbe_netdev_ops = { .ndo_get_stats64 = wx_get_stats64, .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid, + .ndo_hwtstamp_set = wx_hwtstamp_set, + .ndo_hwtstamp_get = wx_hwtstamp_get, }; /** diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c index a5e9b779c44d..c7944e62838a 100644 --- a/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c @@ -7,6 +7,7 @@ #include #include "../libwx/wx_type.h" +#include "../libwx/wx_ptp.h" #include "../libwx/wx_hw.h" #include "ngbe_type.h" #include "ngbe_mdio.h" @@ -64,6 +65,11 @@ static void ngbe_mac_config(struct phylink_config *config, unsigned int mode, static void ngbe_mac_link_down(struct phylink_config *config, unsigned int mode, phy_interface_t interface) { + struct wx *wx = phylink_to_wx(config); + + wx->speed = SPEED_UNKNOWN; + if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) + wx_ptp_reset_cyclecounter(wx); } static void ngbe_mac_link_up(struct phylink_config *config, @@ -103,6 +109,10 @@ static void ngbe_mac_link_up(struct phylink_config *config, wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR); reg = rd32(wx, WX_MAC_WDG_TIMEOUT); wr32(wx, WX_MAC_WDG_TIMEOUT, reg); + + wx->speed = speed; + if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) + wx_ptp_reset_cyclecounter(wx); } static const struct phylink_mac_ops ngbe_mac_ops = { diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c index f77450268036..734450af9a43 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c @@ -13,6 +13,7 @@ #include "../libwx/wx_type.h" #include "../libwx/wx_lib.h" +#include "../libwx/wx_ptp.h" #include "../libwx/wx_hw.h" #include "txgbe_type.h" #include "txgbe_hw.h" @@ -116,6 +117,9 @@ static void txgbe_reset(struct wx *wx) memcpy(old_addr, &wx->mac_table[0].addr, netdev->addr_len); wx_flush_sw_mac_table(wx); wx_mac_set_default_filter(wx, old_addr); + + if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) + wx_ptp_reset(wx); } static void txgbe_disable_device(struct wx *wx) @@ -176,6 +180,7 @@ void txgbe_down(struct wx *wx) void txgbe_up(struct wx *wx) { wx_configure(wx); + wx_ptp_init(wx); txgbe_up_complete(wx); } @@ -321,6 +326,8 @@ static int txgbe_open(struct net_device *netdev) if (err) goto err_free_irq; + wx_ptp_init(wx); + txgbe_up_complete(wx); return 0; @@ -344,6 +351,7 @@ static int txgbe_open(struct net_device *netdev) */ static void txgbe_close_suspend(struct wx *wx) { + wx_ptp_suspend(wx); txgbe_disable_device(wx); wx_free_resources(wx); } @@ -363,6 +371,7 @@ static int txgbe_close(struct net_device *netdev) { struct wx *wx = netdev_priv(netdev); + wx_ptp_stop(wx); txgbe_down(wx); wx_free_irq(wx); wx_free_resources(wx); @@ -479,6 +488,8 @@ static const struct net_device_ops txgbe_netdev_ops = { .ndo_get_stats64 = wx_get_stats64, .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid, + .ndo_hwtstamp_set = wx_hwtstamp_set, + .ndo_hwtstamp_get = wx_hwtstamp_get, }; /** diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c index 1ae68f94dd49..60e5f3288ad8 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c @@ -15,6 +15,7 @@ #include "../libwx/wx_type.h" #include "../libwx/wx_lib.h" +#include "../libwx/wx_ptp.h" #include "../libwx/wx_hw.h" #include "txgbe_type.h" #include "txgbe_phy.h" @@ -179,6 +180,10 @@ static void txgbe_mac_link_down(struct phylink_config *config, struct wx *wx = phylink_to_wx(config); wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0); + + wx->speed = SPEED_UNKNOWN; + if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) + wx_ptp_reset_cyclecounter(wx); } static void txgbe_mac_link_up(struct phylink_config *config, @@ -215,6 +220,10 @@ static void txgbe_mac_link_up(struct phylink_config *config, wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR); wdg = rd32(wx, WX_MAC_WDG_TIMEOUT); wr32(wx, WX_MAC_WDG_TIMEOUT, wdg); + + wx->speed = speed; + if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) + wx_ptp_reset_cyclecounter(wx); } static int txgbe_mac_prepare(struct phylink_config *config, unsigned int mode, From patchwork Tue Jan 21 02:20:32 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiawen Wu X-Patchwork-Id: 13945595 X-Patchwork-Delegate: kuba@kernel.org Received: from smtpbgeu1.qq.com (smtpbgeu1.qq.com [52.59.177.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 452C514F102 for ; Tue, 21 Jan 2025 02:21:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=52.59.177.22 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737426079; cv=none; b=B5DlNLMDC/eDuCdWIKZ6xEfT7IrxD+9qnTWVz2Gs0mjxcCF6br2DKPbnTxsCxvcExKzcG9CaYm6fGwDZtz8k/2GGmdz4Cuxk1w0XF2zPxepNw+RAZpOYPIuu98IMA+Qqwy1V4N0H9hNVgfRTGG+HeanR9I6wRDNhnnvt7jBgYrA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737426079; c=relaxed/simple; bh=Qq8SSureU8S3Ou0zbBou6Got6asQczN5/bB2E+jm894=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=tQDwZJVqlkxabmq709DinwIDGmNjE15s28JKPoP2Ra4yP2sDH1YTEjMNN2Vf7QqlKshE/Jlib3h4L2GN7lcqGcHUw9UUQc2m798kf5+Vlci3dpx8zhCaTXbhi87J2t4XCYIMH4EkQVVQALbq7/ut7rQn+e1kfjZtMqa8flCL0oA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=trustnetic.com; spf=pass smtp.mailfrom=trustnetic.com; arc=none smtp.client-ip=52.59.177.22 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=trustnetic.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=trustnetic.com X-QQ-mid: bizesmtpsz7t1737426065tlh4a5j X-QQ-Originating-IP: 4GniKO5LTGuVtzqKArswU9/zBicqXOjPwSBTh8CuvFw= Received: from wxdbg.localdomain.com ( [115.197.136.137]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 21 Jan 2025 10:21:03 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 4162427598436202465 From: Jiawen Wu To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, linux@armlinux.org.uk, horms@kernel.org, jacob.e.keller@intel.com, netdev@vger.kernel.org, vadim.fedorenko@linux.dev Cc: mengyuanlou@net-swift.com, Jiawen Wu Subject: [PATCH net-next v6 2/4] net: wangxun: Support to get ts info Date: Tue, 21 Jan 2025 10:20:32 +0800 Message-Id: <20250121022034.2321131-3-jiawenwu@trustnetic.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20250121022034.2321131-1-jiawenwu@trustnetic.com> References: <20250121022034.2321131-1-jiawenwu@trustnetic.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtpsz:trustnetic.com:qybglogicsvrgz:qybglogicsvrgz8a-1 X-QQ-XMAILINFO: MRY6qckr/MVJe+EJqxTGTBWjhPgmMc5UUqabebmyCqCAmBpGlj9wNyDS WBl5fsJ/DCP3zwg1Sc9vS88Hx8hT4nK+vUqtPROraGekQ0ofXXSLtyRsoTLup65KRGdnARe 9ziUYJwpXhcA1tzvBOeknyZnFp+/GL1/5b2/fvNqVhR5OBZEjaEgzEuGR4NxhSirWzYuvTk y1QdkbRtwOa2lnlZd99yGyPfz/s+cP/YQqjWQ/YvQ3fgWdboUSKUuMzlmx1aIs35DQSJTtk Bk9mBbmlJn4a+DWTjy2RVA4SPVK5BxO8RNPnuBvFueFapNESl2tk4HAfGjsn0QVEStpyJqC q84LOvkfM3X8fVxYahIENyv6BJvoUAu2dw2f1XOtmrdFBREAiLMT9RlM9N+qqsJmjiMqeIS ZFu9ESEBtqxoAkQeKisqW/vetzZkLE927tgd+ebSr5HOxFaYebnrBZZJTztLi5Uu4troiKF hAJnCDilVR8yRftKUtT/z1+1OL+T1OChSboGNck7qDQNH7T+W2cC0WqugFYA+sy3rRcwMnM m470UVKzGzZOZec3EsdhD3x5xZ5812vqUaTx9VXqsGXniCsoFLgg3DIq2zBJR5lGvCyCvlz 0DFE7NwtenF1lWD472fOmGdtEpk1REiVg4Zk8M1gjm+U4kLlDmuqk7/XlzbzYX3nESVVjSo ZqzITkqTVB2OTPZIckvxFEphS+CacwWYwea35O/dRsNpBEfwazsP8RmXHMauPob+EVLMT89 Da+5pOkoezQtZE1nikbbgLRBFhxwrFdbwqWQo8J5bDU0RsakEtDgoUuHKLpnDULcGB7CWPj iBD4KGwPPN3UPNeRHLMkZfzFLPB/pWHe2176qveXLKD+BJsqhBvJA57jC2CMVdIR1OE12Ra hALUL40/nZtnNIIG8adAv4SdvCHoXvBQBU7MRIQCL9t4A4fPHbKI5OqvTJOHnpQ3Aw6tiE0 Or9xAmOr9Nsojzi0ze+RF/MjYqehkDI3C1nNVrhn4FYerbA== X-QQ-XMRINFO: MSVp+SPm3vtS1Vd6Y4Mggwc= X-QQ-RECHKSPAM: 0 X-Patchwork-Delegate: kuba@kernel.org Implement the function get_ts_info and get_ts_stats in ethtool_ops to get the HW capabilities and statistics for timestamping. Signed-off-by: Jiawen Wu Reviewed-by: Vadim Fedorenko --- .../net/ethernet/wangxun/libwx/wx_ethtool.c | 50 +++++++++++++++++++ .../net/ethernet/wangxun/libwx/wx_ethtool.h | 4 ++ .../net/ethernet/wangxun/ngbe/ngbe_ethtool.c | 2 + .../ethernet/wangxun/txgbe/txgbe_ethtool.c | 2 + 4 files changed, 58 insertions(+) diff --git a/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c b/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c index c4b3b00b0926..28f982fbc64c 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_ethtool.c @@ -455,3 +455,53 @@ void wx_set_msglevel(struct net_device *netdev, u32 data) wx->msg_enable = data; } EXPORT_SYMBOL(wx_set_msglevel); + +int wx_get_ts_info(struct net_device *dev, + struct kernel_ethtool_ts_info *info) +{ + struct wx *wx = netdev_priv(dev); + + info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | + BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) | + BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) | + BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | + BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) | + BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) | + BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) | + BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) | + BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) | + BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) | + BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) | + BIT(HWTSTAMP_FILTER_PTP_V2_EVENT); + + info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | + SOF_TIMESTAMPING_TX_HARDWARE | + SOF_TIMESTAMPING_RX_HARDWARE | + SOF_TIMESTAMPING_RAW_HARDWARE; + + if (wx->ptp_clock) + info->phc_index = ptp_clock_index(wx->ptp_clock); + else + info->phc_index = -1; + + info->tx_types = BIT(HWTSTAMP_TX_OFF) | + BIT(HWTSTAMP_TX_ON); + + return 0; +} +EXPORT_SYMBOL(wx_get_ts_info); + +void wx_get_ptp_stats(struct net_device *dev, + struct ethtool_ts_stats *ts_stats) +{ + struct wx *wx = netdev_priv(dev); + + if (wx->ptp_clock) { + ts_stats->pkts = wx->tx_hwtstamp_pkts; + ts_stats->lost = wx->tx_hwtstamp_timeouts + + wx->tx_hwtstamp_skipped + + wx->rx_hwtstamp_cleared; + ts_stats->err = wx->tx_hwtstamp_errors; + } +} +EXPORT_SYMBOL(wx_get_ptp_stats); diff --git a/drivers/net/ethernet/wangxun/libwx/wx_ethtool.h b/drivers/net/ethernet/wangxun/libwx/wx_ethtool.h index 600c3b597d1a..9e002e699eca 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_ethtool.h +++ b/drivers/net/ethernet/wangxun/libwx/wx_ethtool.h @@ -40,4 +40,8 @@ int wx_set_channels(struct net_device *dev, struct ethtool_channels *ch); u32 wx_get_msglevel(struct net_device *netdev); void wx_set_msglevel(struct net_device *netdev, u32 data); +int wx_get_ts_info(struct net_device *dev, + struct kernel_ethtool_ts_info *info); +void wx_get_ptp_stats(struct net_device *dev, + struct ethtool_ts_stats *ts_stats); #endif /* _WX_ETHTOOL_H_ */ diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c index e868f7ef4920..7e2d9ec38a30 100644 --- a/drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c @@ -138,6 +138,8 @@ static const struct ethtool_ops ngbe_ethtool_ops = { .set_channels = ngbe_set_channels, .get_msglevel = wx_get_msglevel, .set_msglevel = wx_set_msglevel, + .get_ts_info = wx_get_ts_info, + .get_ts_stats = wx_get_ptp_stats, }; void ngbe_set_ethtool_ops(struct net_device *netdev) diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c index d98314b26c19..78999d484f18 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c @@ -529,6 +529,8 @@ static const struct ethtool_ops txgbe_ethtool_ops = { .set_rxnfc = txgbe_set_rxnfc, .get_msglevel = wx_get_msglevel, .set_msglevel = wx_set_msglevel, + .get_ts_info = wx_get_ts_info, + .get_ts_stats = wx_get_ptp_stats, }; void txgbe_set_ethtool_ops(struct net_device *netdev) From patchwork Tue Jan 21 02:20:33 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiawen Wu X-Patchwork-Id: 13945598 X-Patchwork-Delegate: kuba@kernel.org Received: from smtpbgeu2.qq.com (smtpbgeu2.qq.com [18.194.254.142]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 83B1518E3F for ; Tue, 21 Jan 2025 02:21:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=18.194.254.142 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737426086; cv=none; b=s+17ko5GcrJiuwQab8m98cAOgNjFJffMFkeAV/Wq3fZSro4K5Hh4NRbQUSTsvRLDtQmOky+hsqwUTe5h1sUlVB2lqKgJBTJboUwB13CZkM+UdDfl0uPalh/4kbkz0PKyoCoMroLJ0xBPuzru5iFK3PgekD4u+RMlIgs7Kgjt/sY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737426086; c=relaxed/simple; bh=AzlYGc/DEAsD4C1HQAFUs7hHDPCnh2QEggAD5x7dEvo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ukhR5ocZk1sAb72GF7AulG+Wqx2wbkmTbGlpxxDh2ZEV6Z/8bDsibD03Z1ZNmLw2e0BUZ8bggGDzJYfyGebBOMiZXUFNp/w4jkP1fMxkW+wiYhln1d5gczoC0vEC/kUjoilYh9f5H/aGKpG8mlmkAYBzkIIwJ8tP6k+x4HOtuc0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=trustnetic.com; spf=pass smtp.mailfrom=trustnetic.com; arc=none smtp.client-ip=18.194.254.142 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=trustnetic.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=trustnetic.com X-QQ-mid: bizesmtpsz7t1737426067t22p9mg X-QQ-Originating-IP: O3sqi0UicVv04pYgfj+z85iJfj6DyExxbu+rxsd4ybs= Received: from wxdbg.localdomain.com ( [115.197.136.137]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 21 Jan 2025 10:21:06 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 7415060779553432430 From: Jiawen Wu To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, linux@armlinux.org.uk, horms@kernel.org, jacob.e.keller@intel.com, netdev@vger.kernel.org, vadim.fedorenko@linux.dev Cc: mengyuanlou@net-swift.com, Jiawen Wu Subject: [PATCH net-next v6 3/4] net: wangxun: Implement do_aux_work of ptp_clock_info Date: Tue, 21 Jan 2025 10:20:33 +0800 Message-Id: <20250121022034.2321131-4-jiawenwu@trustnetic.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20250121022034.2321131-1-jiawenwu@trustnetic.com> References: <20250121022034.2321131-1-jiawenwu@trustnetic.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtpsz:trustnetic.com:qybglogicsvrgz:qybglogicsvrgz8a-1 X-QQ-XMAILINFO: M4lPCacZ9Yleq5EtLZmvVItOhcWvZ42TiH56TK0TQyXY41EdKUwR92y1 SKV5QY0bEUz3VyDjbP10/xilDKebJ7kIzkHKuqncCFX3OZ6XMOZH0UL5tj7pUPA/qwaIDFy 23h/QGEvzY0Hj6BfeFMaYYpowdUucWE50cUmMfCAhDQVeWTnvXPDnpCgoDqaD4oHhawnau2 2llvpZrEWbLzKN8Li0NK2DudjOSSxyfvAOs4398ILuDiKBEWV8xTqNWYijGYbuWdpH8H3zm B+W68e5etS27vdCRHASnyUj7sQKf3xs8m2IJ+r1DipALVVsIhPXwJ2Bs7ATXeps2wr1Mz3i 25yzrtLgc4SYae+AmlDt489SkDZfe4lrWmdCwfrpQHa1jIvtm7p6M5d90hszJEXa65tXuFE TuvpduEXVxBmmeyF7GxenruMWQkLbhuGl9CVwVuHe/q1lbjLYuJOBMDTGaoN/7gFaY3BDuC L58OywxpqtPrfb42pZ2p3Qv6lMYtiUp6YnxMViVtM7e7EWC/EliLOufUToRGD3+ki3yAORX NsSO75nqtgBlERTKLeaeKEFt4rNCsYhfbZSZYOxCf/ISuyAEtkDlx8BfDUioR+n8wiTB+ga 2yNULi27ujJXMpMTOWs+a3+jgZq2C9oZWs6pKXFxhJmtSyYhl3ujTK5c4zG/Et91vl14g02 RZxWHQqRH16aJpYnbcN9uYGNXDZw7KtQuzfKYUQfgcv6AZJUJgcioU8DJtzAxaRCbUvVYX0 AQ5bkvuJbS0+mroKFvKvs6rHLrtF3ONxX6Rn67CVBchtT4P9WOVaOMjGS1CnGO83vSEZobT 8I2ktWlke9L7GUFYyF/qjuVWsQqpBA4J8yZGBtX//FjB2Bchld8U7Ub/JrwQvcC9eXAgNkU odZWUh+ssOcOC76+XVj1Uil9ZwbWmr1o/bWUH/e1jy7PmCXKJcpMbhfnHUq15jV3jzduoXN sUDB2s6DTMgjrcqcMp5KSbwYlqEsygxcA5zdDnLWYIEZC+Uk7W2dEeuqj0GN0xM/MXzlKR+ P2eLisOw== X-QQ-XMRINFO: NI4Ajvh11aEj8Xl/2s1/T8w= X-QQ-RECHKSPAM: 0 X-Patchwork-Delegate: kuba@kernel.org Implement watchdog task to detect SYSTIME overflow and error cases of Rx/Tx timestamp. Signed-off-by: Jiawen Wu Reviewed-by: Vadim Fedorenko --- drivers/net/ethernet/wangxun/libwx/wx_ptp.c | 114 ++++++++++++++++++ drivers/net/ethernet/wangxun/libwx/wx_type.h | 2 + drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c | 1 + .../net/ethernet/wangxun/txgbe/txgbe_phy.c | 1 + 4 files changed, 118 insertions(+) diff --git a/drivers/net/ethernet/wangxun/libwx/wx_ptp.c b/drivers/net/ethernet/wangxun/libwx/wx_ptp.c index e50209b12845..69b8989b7712 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_ptp.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_ptp.c @@ -266,6 +266,116 @@ static void wx_ptp_tx_hwtstamp_work(struct work_struct *work) } } +/** + * wx_ptp_overflow_check - watchdog task to detect SYSTIME overflow + * @wx: pointer to wx struct + * + * this watchdog task periodically reads the timecounter + * in order to prevent missing when the system time registers wrap + * around. This needs to be run approximately twice a minute for the fastest + * overflowing hardware. We run it for all hardware since it shouldn't have a + * large impact. + */ +static void wx_ptp_overflow_check(struct wx *wx) +{ + bool timeout = time_is_before_jiffies(wx->last_overflow_check + + WX_OVERFLOW_PERIOD); + unsigned long flags; + + if (timeout) { + /* Update the timecounter */ + write_seqlock_irqsave(&wx->hw_tc_lock, flags); + timecounter_read(&wx->hw_tc); + write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); + + wx->last_overflow_check = jiffies; + } +} + +/** + * wx_ptp_rx_hang - detect error case when Rx timestamp registers latched + * @wx: pointer to wx struct + * + * this watchdog task is scheduled to detect error case where hardware has + * dropped an Rx packet that was timestamped when the ring is full. The + * particular error is rare but leaves the device in a state unable to + * timestamp any future packets. + */ +static void wx_ptp_rx_hang(struct wx *wx) +{ + struct wx_ring *rx_ring; + unsigned long rx_event; + u32 tsyncrxctl; + int n; + + tsyncrxctl = rd32(wx, WX_PSR_1588_CTL); + + /* if we don't have a valid timestamp in the registers, just update the + * timeout counter and exit + */ + if (!(tsyncrxctl & WX_PSR_1588_CTL_VALID)) { + wx->last_rx_ptp_check = jiffies; + return; + } + + /* determine the most recent watchdog or rx_timestamp event */ + rx_event = wx->last_rx_ptp_check; + for (n = 0; n < wx->num_rx_queues; n++) { + rx_ring = wx->rx_ring[n]; + if (time_after(rx_ring->last_rx_timestamp, rx_event)) + rx_event = rx_ring->last_rx_timestamp; + } + + /* only need to read the high RXSTMP register to clear the lock */ + if (time_is_before_jiffies(rx_event + 5 * HZ)) { + rd32(wx, WX_PSR_1588_STMPH); + wx->last_rx_ptp_check = jiffies; + + wx->rx_hwtstamp_cleared++; + dev_warn(&wx->pdev->dev, "clearing RX Timestamp hang"); + } +} + +/** + * wx_ptp_tx_hang - detect error case where Tx timestamp never finishes + * @wx: private network wx structure + */ +static void wx_ptp_tx_hang(struct wx *wx) +{ + bool timeout = time_is_before_jiffies(wx->ptp_tx_start + + WX_PTP_TX_TIMEOUT); + + if (!wx->ptp_tx_skb) + return; + + if (!test_bit(WX_STATE_PTP_TX_IN_PROGRESS, wx->state)) + return; + + /* If we haven't received a timestamp within the timeout, it is + * reasonable to assume that it will never occur, so we can unlock the + * timestamp bit when this occurs. + */ + if (timeout) { + cancel_work_sync(&wx->ptp_tx_work); + wx_ptp_clear_tx_timestamp(wx); + wx->tx_hwtstamp_timeouts++; + dev_warn(&wx->pdev->dev, "clearing Tx timestamp hang\n"); + } +} + +static long wx_ptp_do_aux_work(struct ptp_clock_info *ptp) +{ + struct wx *wx = container_of(ptp, struct wx, ptp_caps); + + wx_ptp_overflow_check(wx); + if (unlikely(test_bit(WX_FLAG_RX_HWTSTAMP_IN_REGISTER, + wx->flags))) + wx_ptp_rx_hang(wx); + wx_ptp_tx_hang(wx); + + return HZ; +} + /** * wx_ptp_create_clock * @wx: the private board structure @@ -298,6 +408,7 @@ static long wx_ptp_create_clock(struct wx *wx) wx->ptp_caps.adjtime = wx_ptp_adjtime; wx->ptp_caps.gettimex64 = wx_ptp_gettimex64; wx->ptp_caps.settime64 = wx_ptp_settime64; + wx->ptp_caps.do_aux_work = wx_ptp_do_aux_work; if (wx->mac.type == wx_mac_em) wx->ptp_caps.max_adj = 500000000; else @@ -577,6 +688,9 @@ void wx_ptp_reset(struct wx *wx) timecounter_init(&wx->hw_tc, &wx->hw_cc, ktime_to_ns(ktime_get_real())); write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); + + wx->last_overflow_check = jiffies; + ptp_schedule_worker(wx->ptp_clock, HZ); } EXPORT_SYMBOL(wx_ptp_reset); diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h index 9199317f7175..c2e58de3559a 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_type.h +++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h @@ -1175,6 +1175,8 @@ struct wx { u32 tx_hwtstamp_skipped; u32 tx_hwtstamp_errors; u32 rx_hwtstamp_cleared; + unsigned long last_overflow_check; + unsigned long last_rx_ptp_check; unsigned long ptp_tx_start; seqlock_t hw_tc_lock; /* seqlock for ptp */ struct cyclecounter hw_cc; diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c index c7944e62838a..ea1d7e9a91f3 100644 --- a/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c @@ -111,6 +111,7 @@ static void ngbe_mac_link_up(struct phylink_config *config, wr32(wx, WX_MAC_WDG_TIMEOUT, reg); wx->speed = speed; + wx->last_rx_ptp_check = jiffies; if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) wx_ptp_reset_cyclecounter(wx); } diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c index 60e5f3288ad8..7e17d727c2ba 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c @@ -222,6 +222,7 @@ static void txgbe_mac_link_up(struct phylink_config *config, wr32(wx, WX_MAC_WDG_TIMEOUT, wdg); wx->speed = speed; + wx->last_rx_ptp_check = jiffies; if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) wx_ptp_reset_cyclecounter(wx); } From patchwork Tue Jan 21 02:20:34 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiawen Wu X-Patchwork-Id: 13945597 X-Patchwork-Delegate: kuba@kernel.org Received: from smtpbguseast3.qq.com (smtpbguseast3.qq.com [54.243.244.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 73A9E14D444 for ; Tue, 21 Jan 2025 02:21:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.243.244.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737426084; cv=none; b=ZLXlsDkCsXbguPq8zp9HbZcfOQg1vGUuNYs0ZMCZvThk3ZKEnn4Ma6CrnQuM38l+ftlrfymXSYH2VNNbKchGZovnWgXWi8rW88cy1MAxQDyQdYmGdUQYAJJjVLKQzWPuvdSL0c4PEgBkDur9w+uVJr/PP9ecMlam9pzhTZSSZO8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737426084; c=relaxed/simple; bh=JK0is7ZkEKCHgK+L/rSsDYKm2YmkQ13Q8xK3VGG5C0I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Z8tDpAHPqhxtC8oFVAv8LxcAJcsJJyDEWRtzV4AbsSs9o066m03qMP+WbG4cfYHlqa3AjAw1FKSt5lGgixD8hplNVpH1+gxVMdhx19LUYO/9MhmHo5aMeo81z7+1hwiJe02foKgFA/v9Irv221ZMqQ6zIHT93/H+5PK5DAjqgUA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=trustnetic.com; spf=pass smtp.mailfrom=trustnetic.com; arc=none smtp.client-ip=54.243.244.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=trustnetic.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=trustnetic.com X-QQ-mid: bizesmtpsz7t1737426070tdvh3lm X-QQ-Originating-IP: loBXz/K3aOntwBNQ7L2Gf+qq0POkPGWCH6bllvSWyj4= Received: from wxdbg.localdomain.com ( [115.197.136.137]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 21 Jan 2025 10:21:09 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 9649766258015813327 From: Jiawen Wu To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, linux@armlinux.org.uk, horms@kernel.org, jacob.e.keller@intel.com, netdev@vger.kernel.org, vadim.fedorenko@linux.dev Cc: mengyuanlou@net-swift.com, Jiawen Wu Subject: [PATCH net-next v6 4/4] net: ngbe: Add support for 1PPS and TOD Date: Tue, 21 Jan 2025 10:20:34 +0800 Message-Id: <20250121022034.2321131-5-jiawenwu@trustnetic.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20250121022034.2321131-1-jiawenwu@trustnetic.com> References: <20250121022034.2321131-1-jiawenwu@trustnetic.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtpsz:trustnetic.com:qybglogicsvrgz:qybglogicsvrgz8a-1 X-QQ-XMAILINFO: MZChPk4K8ikNaVDUu9GsoXQ2Dt2u0eHsSGhgp/1IgO9apqHnXPuNV3sD 08swxTM2oYZAaP0b2Gmx4ydpc2kr4yHnADKrpMiXYucIfkO57Xtz250qFkiTT0vrRTo2s8a 962yQEBIDJM5RLntoUOzuPaerokVKpROtTNL+5/BFzyM6qD2/xcWJ9+pImceO3GpggZeMbl KnOsv5aTxn17iS2YJpCq34wK4SVinjAj0wdL0Vuq9KJbs92z0WG88pVxHWKxA0otAB4k2uf bid6bTZzztRH2Tvp14l+yTI6xbh341n5s8zDo2zryLCh4H9s1/2rW6gCuVmh8/VOLOs4spI cdDgWpUR+6D9KRNJIS5jdYnG90Aff4biNlGX8y0apv1d1rd1rn7Nv53bdKasUkDNn8W79dd RHVKhJkQd0L93PAVmaALQSEw5IzBPLS+zXQQ77ca2IKH43gINp6Sj8t9BVEL+YrxAR2bBaV L1M0IyJsmvSP1NEE4g3g9acmJ4ArvEY5yZJMtNqS8IFXhSpWx7KMh6Qg2I8QL/6gyIKpFnx ZK5g0jOdNVNE/SldvZ1bKC0yzl6jx+kh3oV9zwf3qTUFMg1PG7bbAkbTknDZklr6w14I6I4 atevLkEo7TGmx4fK8mtHPZI+JOYEs6qe0AHajGqaa8MDPp0QKui1V76j1XRssRJpWvbcM3d cos6IDXuHWCrCT1ZFuyZx+/i0soH2XhAiisR6UXuTgQtOyqJrZI7cRLLoQNJl/ZxXTzfnJe fFJ5KyiI7kbsljW1XhQ8Mc2edK0IFB7dMstgZD9svvwH30vHDguHjzrz0NSdKD3UFcWiuDI 50g9WBEWJ7tvSNfItioj15d/eRRVEICaSC22SJOS0EaFg6EbhZZjf1vrNd/7flLpxvhFNSC TA+eZlJinJmTV0ldW6Ym00L30eowHGfD2d6r415MLqnj+/7PDf1877RczY4wX5Y/Tsod5A8 qgnKGpZ+DpsIGJPE6vT1GkeIZwPbivSg3Zc+7c/nyAHR10PU3q5Hc9dzyCxaux0YNlAktYy 0oQow0zc6DndYcAIJ8 X-QQ-XMRINFO: M/715EihBoGSf6IYSX1iLFg= X-QQ-RECHKSPAM: 0 X-Patchwork-Delegate: kuba@kernel.org Implement support for generating a 1pps output signal on SDP0. And support custom firmware to output TOD. Signed-off-by: Jiawen Wu --- drivers/net/ethernet/wangxun/libwx/wx_hw.c | 19 ++ drivers/net/ethernet/wangxun/libwx/wx_hw.h | 1 + drivers/net/ethernet/wangxun/libwx/wx_ptp.c | 196 +++++++++++++++++- drivers/net/ethernet/wangxun/libwx/wx_ptp.h | 1 + drivers/net/ethernet/wangxun/libwx/wx_type.h | 35 ++++ drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 12 +- drivers/net/ethernet/wangxun/ngbe/ngbe_type.h | 5 + 7 files changed, 265 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c index deaf670c160e..907d13ade404 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c @@ -393,6 +393,25 @@ int wx_host_interface_command(struct wx *wx, u32 *buffer, } EXPORT_SYMBOL(wx_host_interface_command); +int wx_set_pps(struct wx *wx, bool enable, u64 nsec, u64 cycles) +{ + struct wx_hic_set_pps pps_cmd; + + pps_cmd.hdr.cmd = FW_PPS_SET_CMD; + pps_cmd.hdr.buf_len = FW_PPS_SET_LEN; + pps_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED; + pps_cmd.lan_id = wx->bus.func; + pps_cmd.enable = (u8)enable; + pps_cmd.nsec = nsec; + pps_cmd.cycles = cycles; + pps_cmd.hdr.checksum = FW_DEFAULT_CHECKSUM; + + return wx_host_interface_command(wx, (u32 *)&pps_cmd, + sizeof(pps_cmd), + WX_HI_COMMAND_TIMEOUT, + false); +} + /** * wx_read_ee_hostif_data - Read EEPROM word using a host interface cmd * assuming that the semaphore is already obtained. diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.h b/drivers/net/ethernet/wangxun/libwx/wx_hw.h index 11fb33349482..b883342bb576 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_hw.h +++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.h @@ -18,6 +18,7 @@ void wx_control_hw(struct wx *wx, bool drv); int wx_mng_present(struct wx *wx); int wx_host_interface_command(struct wx *wx, u32 *buffer, u32 length, u32 timeout, bool return_data); +int wx_set_pps(struct wx *wx, bool enable, u64 nsec, u64 cycles); int wx_read_ee_hostif(struct wx *wx, u16 offset, u16 *data); int wx_read_ee_hostif_buffer(struct wx *wx, u16 offset, u16 words, u16 *data); diff --git a/drivers/net/ethernet/wangxun/libwx/wx_ptp.c b/drivers/net/ethernet/wangxun/libwx/wx_ptp.c index 69b8989b7712..721b4ec6e466 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_ptp.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_ptp.c @@ -104,6 +104,9 @@ static int wx_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) timecounter_adjtime(&wx->hw_tc, delta); write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); + if (wx->ptp_setup_sdp) + wx->ptp_setup_sdp(wx); + return 0; } @@ -153,6 +156,9 @@ static int wx_ptp_settime64(struct ptp_clock_info *ptp, timecounter_init(&wx->hw_tc, &wx->hw_cc, ns); write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); + if (wx->ptp_setup_sdp) + wx->ptp_setup_sdp(wx); + return 0; } @@ -376,6 +382,175 @@ static long wx_ptp_do_aux_work(struct ptp_clock_info *ptp) return HZ; } +static u64 wx_ptp_trigger_calc(struct wx *wx) +{ + struct cyclecounter *cc = &wx->hw_cc; + unsigned long flags; + u64 ns = 0; + u32 rem; + + /* Read the current clock time, and save the cycle counter value */ + write_seqlock_irqsave(&wx->hw_tc_lock, flags); + ns = timecounter_read(&wx->hw_tc); + wx->pps_edge_start = wx->hw_tc.cycle_last; + write_sequnlock_irqrestore(&wx->hw_tc_lock, flags); + wx->pps_edge_end = wx->pps_edge_start; + + /* Figure out how far past the next second we are */ + div_u64_rem(ns, WX_NS_PER_SEC, &rem); + + /* Figure out how many nanoseconds to add to round the clock edge up + * to the next full second + */ + rem = (WX_NS_PER_SEC - rem); + + /* Adjust the clock edge to align with the next full second. */ + wx->pps_edge_start += div_u64(((u64)rem << cc->shift), cc->mult); + wx->pps_edge_end += div_u64(((u64)(rem + wx->pps_width) << + cc->shift), cc->mult); + + return (ns + rem); +} + +static int wx_ptp_setup_sdp(struct wx *wx) +{ + struct cyclecounter *cc = &wx->hw_cc; + u32 tsauxc; + u64 nsec; + + if (wx->pps_width >= WX_NS_PER_SEC) { + wx_err(wx, "PTP pps width cannot be longer than 1s!\n"); + return -EINVAL; + } + + /* disable the pin first */ + wr32ptp(wx, WX_TSC_1588_AUX_CTL, 0); + WX_WRITE_FLUSH(wx); + + if (!test_bit(WX_FLAG_PTP_PPS_ENABLED, wx->flags)) { + if (wx->pps_enabled) { + wx->pps_enabled = false; + wx_set_pps(wx, false, 0, 0); + } + return 0; + } + + wx->pps_enabled = true; + nsec = wx_ptp_trigger_calc(wx); + wx_set_pps(wx, wx->pps_enabled, nsec, wx->pps_edge_start); + + tsauxc = WX_TSC_1588_AUX_CTL_PLSG | WX_TSC_1588_AUX_CTL_EN_TT0 | + WX_TSC_1588_AUX_CTL_EN_TT1 | WX_TSC_1588_AUX_CTL_EN_TS0; + wr32ptp(wx, WX_TSC_1588_TRGT_L(0), (u32)wx->pps_edge_start); + wr32ptp(wx, WX_TSC_1588_TRGT_H(0), (u32)(wx->pps_edge_start >> 32)); + wr32ptp(wx, WX_TSC_1588_TRGT_L(1), (u32)wx->pps_edge_end); + wr32ptp(wx, WX_TSC_1588_TRGT_H(1), (u32)(wx->pps_edge_end >> 32)); + wr32ptp(wx, WX_TSC_1588_SDP(0), + WX_TSC_1588_SDP_FUN_SEL_TT0 | WX_TSC_1588_SDP_OUT_LEVEL_H); + wr32ptp(wx, WX_TSC_1588_SDP(1), WX_TSC_1588_SDP_FUN_SEL_TS0); + wr32ptp(wx, WX_TSC_1588_AUX_CTL, tsauxc); + wr32ptp(wx, WX_TSC_1588_INT_EN, WX_TSC_1588_INT_EN_TT1); + WX_WRITE_FLUSH(wx); + + /* Adjust the clock edge to align with the next full second. */ + wx->sec_to_cc = div_u64(((u64)WX_NS_PER_SEC << cc->shift), cc->mult); + + return 0; +} + +/** + * wx_ptp_feature_enable + * @ptp: the ptp clock structure + * @rq: the requested feature to change + * @on: whether to enable or disable the feature + * + * enable (or disable) ancillary features of the phc subsystem. + */ +static int wx_ptp_feature_enable(struct ptp_clock_info *ptp, + struct ptp_clock_request *rq, int on) +{ + struct wx *wx = container_of(ptp, struct wx, ptp_caps); + + /** + * When PPS is enabled, unmask the interrupt for the ClockOut + * feature, so that the interrupt handler can send the PPS + * event when the clock SDP triggers. Clear mask when PPS is + * disabled + */ + if (rq->type != PTP_CLK_REQ_PEROUT || !wx->ptp_setup_sdp) + return -EOPNOTSUPP; + + /* Reject requests with unsupported flags */ + if (rq->perout.flags & ~(PTP_PEROUT_DUTY_CYCLE | + PTP_PEROUT_PHASE)) + return -EOPNOTSUPP; + + if (rq->perout.phase.sec || rq->perout.phase.nsec) { + wx_err(wx, "Absolute start time not supported.\n"); + return -EINVAL; + } + + if (rq->perout.period.sec != 1 || rq->perout.period.nsec) { + wx_err(wx, "Only 1pps is supported.\n"); + return -EINVAL; + } + + if (rq->perout.flags & PTP_PEROUT_DUTY_CYCLE) { + struct timespec64 ts_on; + + ts_on.tv_sec = rq->perout.on.sec; + ts_on.tv_nsec = rq->perout.on.nsec; + wx->pps_width = timespec64_to_ns(&ts_on); + } else { + wx->pps_width = 120000000; + } + + if (on) + set_bit(WX_FLAG_PTP_PPS_ENABLED, wx->flags); + else + clear_bit(WX_FLAG_PTP_PPS_ENABLED, wx->flags); + + return wx->ptp_setup_sdp(wx); +} + +/** + * wx_ptp_check_pps_event + * @wx: the private wx structure + * + * This function is called by the interrupt routine when checking for + * interrupts. It will check and handle a pps event. + */ +void wx_ptp_check_pps_event(struct wx *wx) +{ + u32 tsauxc, int_status; + + /* this check is necessary in case the interrupt was enabled via some + * alternative means (ex. debug_fs). Better to check here than + * everywhere that calls this function. + */ + if (!wx->ptp_clock) + return; + + int_status = rd32ptp(wx, WX_TSC_1588_INT_ST); + if (int_status & WX_TSC_1588_INT_ST_TT1) { + /* disable the pin first */ + wr32ptp(wx, WX_TSC_1588_AUX_CTL, 0); + WX_WRITE_FLUSH(wx); + + wx_ptp_trigger_calc(wx); + + tsauxc = WX_TSC_1588_AUX_CTL_PLSG | WX_TSC_1588_AUX_CTL_EN_TT0 | + WX_TSC_1588_AUX_CTL_EN_TT1 | WX_TSC_1588_AUX_CTL_EN_TS0; + wr32ptp(wx, WX_TSC_1588_TRGT_L(0), (u32)wx->pps_edge_start); + wr32ptp(wx, WX_TSC_1588_TRGT_H(0), (u32)(wx->pps_edge_start >> 32)); + wr32ptp(wx, WX_TSC_1588_TRGT_L(1), (u32)wx->pps_edge_end); + wr32ptp(wx, WX_TSC_1588_TRGT_H(1), (u32)(wx->pps_edge_end >> 32)); + wr32ptp(wx, WX_TSC_1588_AUX_CTL, tsauxc); + WX_WRITE_FLUSH(wx); + } +} +EXPORT_SYMBOL(wx_ptp_check_pps_event); + /** * wx_ptp_create_clock * @wx: the private board structure @@ -402,17 +577,22 @@ static long wx_ptp_create_clock(struct wx *wx) wx->ptp_caps.owner = THIS_MODULE; wx->ptp_caps.n_alarm = 0; wx->ptp_caps.n_ext_ts = 0; - wx->ptp_caps.n_per_out = 0; wx->ptp_caps.pps = 0; wx->ptp_caps.adjfine = wx_ptp_adjfine; wx->ptp_caps.adjtime = wx_ptp_adjtime; wx->ptp_caps.gettimex64 = wx_ptp_gettimex64; wx->ptp_caps.settime64 = wx_ptp_settime64; wx->ptp_caps.do_aux_work = wx_ptp_do_aux_work; - if (wx->mac.type == wx_mac_em) + if (wx->mac.type == wx_mac_em) { wx->ptp_caps.max_adj = 500000000; - else + wx->ptp_caps.n_per_out = 1; + wx->ptp_setup_sdp = wx_ptp_setup_sdp; + wx->ptp_caps.enable = wx_ptp_feature_enable; + } else { wx->ptp_caps.max_adj = 250000000; + wx->ptp_caps.n_per_out = 0; + wx->ptp_setup_sdp = NULL; + } wx->ptp_clock = ptp_clock_register(&wx->ptp_caps, &wx->pdev->dev); if (IS_ERR(wx->ptp_clock)) { @@ -691,6 +871,12 @@ void wx_ptp_reset(struct wx *wx) wx->last_overflow_check = jiffies; ptp_schedule_worker(wx->ptp_clock, HZ); + + /* Now that the shift has been calculated and the systime + * registers reset, (re-)enable the Clock out feature + */ + if (wx->ptp_setup_sdp) + wx->ptp_setup_sdp(wx); } EXPORT_SYMBOL(wx_ptp_reset); @@ -742,6 +928,10 @@ void wx_ptp_suspend(struct wx *wx) if (!test_and_clear_bit(WX_STATE_PTP_RUNNING, wx->state)) return; + clear_bit(WX_FLAG_PTP_PPS_ENABLED, wx->flags); + if (wx->ptp_setup_sdp) + wx->ptp_setup_sdp(wx); + cancel_work_sync(&wx->ptp_tx_work); wx_ptp_clear_tx_timestamp(wx); } diff --git a/drivers/net/ethernet/wangxun/libwx/wx_ptp.h b/drivers/net/ethernet/wangxun/libwx/wx_ptp.h index 8742d2797363..50db90a6e3ee 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_ptp.h +++ b/drivers/net/ethernet/wangxun/libwx/wx_ptp.h @@ -4,6 +4,7 @@ #ifndef _WX_PTP_H_ #define _WX_PTP_H_ +void wx_ptp_check_pps_event(struct wx *wx); void wx_ptp_reset_cyclecounter(struct wx *wx); void wx_ptp_reset(struct wx *wx); void wx_ptp_init(struct wx *wx); diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h index c2e58de3559a..7f6af62f5e94 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_type.h +++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h @@ -281,6 +281,23 @@ #define WX_TSC_1588_SYSTIML 0x11F0C #define WX_TSC_1588_SYSTIMH 0x11F10 #define WX_TSC_1588_INC 0x11F14 +#define WX_TSC_1588_INT_ST 0x11F20 +#define WX_TSC_1588_INT_ST_TT1 BIT(5) +#define WX_TSC_1588_INT_EN 0x11F24 +#define WX_TSC_1588_INT_EN_TT1 BIT(5) +#define WX_TSC_1588_AUX_CTL 0x11F28 +#define WX_TSC_1588_AUX_CTL_EN_TS0 BIT(8) +#define WX_TSC_1588_AUX_CTL_EN_TT1 BIT(2) +#define WX_TSC_1588_AUX_CTL_PLSG BIT(1) +#define WX_TSC_1588_AUX_CTL_EN_TT0 BIT(0) +#define WX_TSC_1588_TRGT_L(i) (0x11F2C + ((i) * 8)) /* [0,1] */ +#define WX_TSC_1588_TRGT_H(i) (0x11F30 + ((i) * 8)) /* [0,1] */ +#define WX_TSC_1588_SDP(i) (0x11F5C + ((i) * 4)) /* [0,3] */ +#define WX_TSC_1588_SDP_OUT_LEVEL_H FIELD_PREP(BIT(4), 0) +#define WX_TSC_1588_SDP_OUT_LEVEL_L FIELD_PREP(BIT(4), 1) +#define WX_TSC_1588_SDP_FUN_SEL_MASK GENMASK(2, 0) +#define WX_TSC_1588_SDP_FUN_SEL_TT0 FIELD_PREP(WX_TSC_1588_SDP_FUN_SEL_MASK, 1) +#define WX_TSC_1588_SDP_FUN_SEL_TS0 FIELD_PREP(WX_TSC_1588_SDP_FUN_SEL_MASK, 5) /************************************** MNG ********************************/ #define WX_MNG_SWFW_SYNC 0x1E008 @@ -410,6 +427,8 @@ enum WX_MSCA_CMD_value { #define FW_CEM_CMD_RESERVED 0X0 #define FW_CEM_MAX_RETRIES 3 #define FW_CEM_RESP_STATUS_SUCCESS 0x1 +#define FW_PPS_SET_CMD 0xF6 +#define FW_PPS_SET_LEN 0x14 #define WX_SW_REGION_PTR 0x1C @@ -730,6 +749,15 @@ struct wx_hic_reset { u16 reset_type; }; +struct wx_hic_set_pps { + struct wx_hic_hdr hdr; + u8 lan_id; + u8 enable; + u16 pad2; + u64 nsec; + u64 cycles; +}; + /* Bus parameters */ struct wx_bus_info { u8 func; @@ -1068,6 +1096,7 @@ enum wx_pf_flags { WX_FLAG_FDIR_PERFECT, WX_FLAG_RX_HWTSTAMP_ENABLED, WX_FLAG_RX_HWTSTAMP_IN_REGISTER, + WX_FLAG_PTP_PPS_ENABLED, WX_PF_FLAGS_NBITS /* must be last */ }; @@ -1168,7 +1197,13 @@ struct wx { void (*atr)(struct wx_ring *ring, struct wx_tx_buffer *first, u8 ptype); void (*configure_fdir)(struct wx *wx); void (*do_reset)(struct net_device *netdev); + int (*ptp_setup_sdp)(struct wx *wx); + bool pps_enabled; + u64 pps_width; + u64 pps_edge_start; + u64 pps_edge_end; + u64 sec_to_cc; u32 base_incval; u32 tx_hwtstamp_pkts; u32 tx_hwtstamp_timeouts; diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c index c60a96cc3508..a6159214ec0a 100644 --- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c @@ -168,7 +168,7 @@ static irqreturn_t ngbe_intr(int __always_unused irq, void *data) struct wx_q_vector *q_vector; struct wx *wx = data; struct pci_dev *pdev; - u32 eicr; + u32 eicr, eicr_misc; q_vector = wx->q_vector[0]; pdev = wx->pdev; @@ -186,6 +186,10 @@ static irqreturn_t ngbe_intr(int __always_unused irq, void *data) if (!(pdev->msi_enabled)) wr32(wx, WX_PX_INTA, 1); + eicr_misc = wx_misc_isb(wx, WX_ISB_MISC); + if (unlikely(eicr_misc & NGBE_PX_MISC_IC_TIMESYNC)) + wx_ptp_check_pps_event(wx); + wx->isb_mem[WX_ISB_MISC] = 0; /* would disable interrupts here but it is auto disabled */ napi_schedule_irqoff(&q_vector->napi); @@ -199,6 +203,12 @@ static irqreturn_t ngbe_intr(int __always_unused irq, void *data) static irqreturn_t ngbe_msix_other(int __always_unused irq, void *data) { struct wx *wx = data; + u32 eicr; + + eicr = wx_misc_isb(wx, WX_ISB_MISC); + + if (unlikely(eicr & NGBE_PX_MISC_IC_TIMESYNC)) + wx_ptp_check_pps_event(wx); /* re-enable the original interrupt state, no lsc, no queues */ if (netif_running(wx->netdev)) diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h b/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h index f48ed7fc1805..992adbb98c7d 100644 --- a/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h @@ -70,15 +70,20 @@ /* Extended Interrupt Enable Set */ #define NGBE_PX_MISC_IEN_DEV_RST BIT(10) +#define NGBE_PX_MISC_IEN_TIMESYNC BIT(11) #define NGBE_PX_MISC_IEN_ETH_LK BIT(18) #define NGBE_PX_MISC_IEN_INT_ERR BIT(20) #define NGBE_PX_MISC_IEN_GPIO BIT(26) #define NGBE_PX_MISC_IEN_MASK ( \ NGBE_PX_MISC_IEN_DEV_RST | \ + NGBE_PX_MISC_IEN_TIMESYNC | \ NGBE_PX_MISC_IEN_ETH_LK | \ NGBE_PX_MISC_IEN_INT_ERR | \ NGBE_PX_MISC_IEN_GPIO) +/* Extended Interrupt Cause Read */ +#define NGBE_PX_MISC_IC_TIMESYNC BIT(11) /* time sync */ + #define NGBE_INTR_ALL 0x1FF #define NGBE_INTR_MISC BIT(0)