Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39B42C4332F for ; Mon, 29 Nov 2021 12:44:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347229AbhK2Mr4 (ORCPT ); Mon, 29 Nov 2021 07:47:56 -0500 Received: from esa.microchip.iphmx.com ([68.232.153.233]:50671 "EHLO esa.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344148AbhK2Mpu (ORCPT ); Mon, 29 Nov 2021 07:45:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1638189754; x=1669725754; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0Gr7793jst005GfBb5TE1h/8NRGDnGJMhDyw8THz4aQ=; b=YqeiVhb3yN5xCrl3wrryqfDMUYrTP2Iq3CByNSox39odZnf7Sikih08M 235/ZxjcygG4BtZc4rOnqpGS2TZnNlLNV6NZ8VL+zONpLuEliuWMFnSVA lrHIrT8hq6iu2sgDPdCl0ixFphwnQE62+ABLgYyMBgXtMn1c+0cmkZ3Rf Tqmoj+aSl0BKRooTsYQXwKEeKVxuYovRFmhd4Z0EuNPn0c8T5pvpSi/2P OSH2HwQClyQCNwxe1efanSYK+5fFwtOkqnl9SJOzqQbBUAXA+LDGP5+ZY gXqUIQZXshYM8MiA3Qeb10wEMUa2g7tvspwNC+yYEa1o4uTa8rKeH9RtQ Q==; IronPort-SDR: pphL44hGFZptVyeMsRC3FG6V2Hz68ltlIlGhlOIYuAbwm0r7KosJX7T9RKQXS52NuegnAyX789 lmmVh5VueZg9hOyNrno2SHnz7EF/evIwn1wSqd06gpQNcr4bFjcZMm0oNHNA+Kv/ueTflYsneX bAmd+phP5npQ7chGi/9156G7jmg6B7S3W9HTEKKwDMVKHuzJFR7KO5eS833EMm/B2pKs0Jf4hm gT3t5rKZDymJLwF9FKUoMQ2KTUsAXAfChLJKLxrIep+CqOZX7sPrYZvmg49DRZq8cykeUm4TRN wa1MM4MTuiNHClJaHLAXOekT X-IronPort-AV: E=Sophos;i="5.87,273,1631602800"; d="scan'208";a="144833712" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 29 Nov 2021 05:42:34 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.14; Mon, 29 Nov 2021 05:42:32 -0700 Received: from soft-dev3-1.microsemi.net (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2176.14 via Frontend Transport; Mon, 29 Nov 2021 05:42:29 -0700 From: Horatiu Vultur To: , , , , , , , , , CC: Horatiu Vultur Subject: [PATCH net-next v5 3/6] net: lan966x: add port module support Date: Mon, 29 Nov 2021 13:43:56 +0100 Message-ID: <20211129124359.4069432-4-horatiu.vultur@microchip.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211129124359.4069432-1-horatiu.vultur@microchip.com> References: <20211129124359.4069432-1-horatiu.vultur@microchip.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds support for netdev and phylink in the switch. The injection + extraction is register based. This will be replaced with DMA accees. Signed-off-by: Horatiu Vultur --- .../net/ethernet/microchip/lan966x/Makefile | 2 +- .../ethernet/microchip/lan966x/lan966x_ifh.h | 173 ++++++ .../ethernet/microchip/lan966x/lan966x_main.c | 512 +++++++++++++++++- .../ethernet/microchip/lan966x/lan966x_main.h | 38 ++ .../microchip/lan966x/lan966x_phylink.c | 127 +++++ .../ethernet/microchip/lan966x/lan966x_port.c | 412 ++++++++++++++ 6 files changed, 1259 insertions(+), 5 deletions(-) create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_ifh.h create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_phylink.c create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_port.c diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile index 7ea90410a0b2..e18c9b2d0bb7 100644 --- a/drivers/net/ethernet/microchip/lan966x/Makefile +++ b/drivers/net/ethernet/microchip/lan966x/Makefile @@ -5,4 +5,4 @@ obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o -lan966x-switch-objs := lan966x_main.o +lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_ifh.h b/drivers/net/ethernet/microchip/lan966x/lan966x_ifh.h new file mode 100644 index 000000000000..ca3314789d18 --- /dev/null +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_ifh.h @@ -0,0 +1,173 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef __LAN966X_IFH_H__ +#define __LAN966X_IFH_H__ + +/* Fields with description (*) should just be cleared upon injection + * IFH is transmitted MSByte first (Highest bit pos sent as MSB of first byte) + */ + +#define IFH_LEN 7 + +/* Timestamp for frame */ +#define IFH_POS_TIMESTAMP 192 + +/* Bypass analyzer with a prefilled IFH */ +#define IFH_POS_BYPASS 191 + +/* Masqueraded injection with masq_port defining logical source port */ +#define IFH_POS_MASQ 190 + +/* Masqueraded port number for injection */ +#define IFH_POS_MASQ_PORT 186 + +/* Frame length (*) */ +#define IFH_POS_LEN 178 + +/* Cell filling mode. Full(0),Etype(1), LlctOpt(2), Llct(3) */ +#define IFH_POS_WRDMODE 176 + +/* Frame has 16 bits rtag removed compared to line data */ +#define IFH_POS_RTAG48 175 + +/* Frame has a redundancy tag */ +#define IFH_POS_HAS_RED_TAG 174 + +/* Frame has been cut through forwarded (*) */ +#define IFH_POS_CUTTHRU 173 + +/* Rewriter command */ +#define IFH_POS_REW_CMD 163 + +/* Enable OAM-related rewriting. PDU_TYPE encodes OAM type. */ +#define IFH_POS_REW_OAM 162 + +/* PDU type. Encoding: (0-NONE, 1-Y1731_CCM, 2-MRP_TST, 3-MRP_ITST, 4-DLR_BCN, + * 5-DLR_ADV, 6-RTE_NULL_INJ, 7-IPV4, 8-IPV6, 9-Y1731_NON_CCM). + */ +#define IFH_POS_PDU_TYPE 158 + +/* Update FCS before transmission */ +#define IFH_POS_FCS_UPD 157 + +/* Classified DSCP value of frame */ +#define IFH_POS_DSCP 151 + +/* Yellow indication */ +#define IFH_POS_DP 150 + +/* Process in RTE/inbound */ +#define IFH_POS_RTE_INB_UPDATE 149 + +/* Number of tags to pop from frame */ +#define IFH_POS_POP_CNT 147 + +/* Number of tags in front of the ethertype */ +#define IFH_POS_ETYPE_OFS 145 + +/* Logical source port of frame (*) */ +#define IFH_POS_SRCPORT 141 + +/* Sequence number in redundancy tag */ +#define IFH_POS_SEQ_NUM 120 + +/* Stagd flag and classified TCI of frame (PCP/DEI/VID) */ +#define IFH_POS_TCI 103 + +/* Classified internal priority for queuing */ +#define IFH_POS_QOS_CLASS 100 + +/* Bit mask with eight cpu copy classses */ +#define IFH_POS_CPUQ 92 + +/* Relearn + learn flags (*) */ +#define IFH_POS_LEARN_FLAGS 90 + +/* SFLOW identifier for frame (0-8: Tx port, 9: Rx sampling, 15: No sampling) */ +#define IFH_POS_SFLOW_ID 86 + +/* Set if an ACL/S2 rule was hit (*). + * Super priority: acl_hit=0 and acl_hit(4)=1. + */ +#define IFH_POS_ACL_HIT 85 + +/* S2 rule index hit (*) */ +#define IFH_POS_ACL_IDX 79 + +/* ISDX as classified by S1 */ +#define IFH_POS_ISDX 71 + +/* Destination ports for frame */ +#define IFH_POS_DSTS 62 + +/* Storm policer to be applied: None/Uni/Multi/Broad (*) */ +#define IFH_POS_FLOOD 60 + +/* Redundancy tag operation */ +#define IFH_POS_SEQ_OP 58 + +/* Classified internal priority for resourcemgt, tagging etc */ +#define IFH_POS_IPV 55 + +/* Frame is for AFI use */ +#define IFH_POS_AFI 54 + +/* Internal aging value (*) */ +#define IFH_POS_AGED 52 + +/* RTP Identifier */ +#define IFH_POS_RTP_ID 42 + +/* RTP MRPD flow */ +#define IFH_POS_RTP_SUBID 41 + +/* Profinet DataStatus or opcua GroupVersion MSB */ +#define IFH_POS_PN_DATA_STATUS 33 + +/* Profinet transfer status (1 iff the status is 0) */ +#define IFH_POS_PN_TRANSF_STATUS_ZERO 32 + +/* Profinet cycle counter or opcua NetworkMessageNumber */ +#define IFH_POS_PN_CC 16 + +#define IFH_WID_TIMESTAMP 32 +#define IFH_WID_BYPASS 1 +#define IFH_WID_MASQ 1 +#define IFH_WID_MASQ_PORT 4 +#define IFH_WID_LEN 14 +#define IFH_WID_WRDMODE 2 +#define IFH_WID_RTAG48 1 +#define IFH_WID_HAS_RED_TAG 1 +#define IFH_WID_CUTTHRU 1 +#define IFH_WID_REW_CMD 10 +#define IFH_WID_REW_OAM 1 +#define IFH_WID_PDU_TYPE 4 +#define IFH_WID_FCS_UPD 1 +#define IFH_WID_DSCP 6 +#define IFH_WID_DP 1 +#define IFH_WID_RTE_INB_UPDATE 1 +#define IFH_WID_POP_CNT 2 +#define IFH_WID_ETYPE_OFS 2 +#define IFH_WID_SRCPORT 4 +#define IFH_WID_SEQ_NUM 16 +#define IFH_WID_TCI 17 +#define IFH_WID_QOS_CLASS 3 +#define IFH_WID_CPUQ 8 +#define IFH_WID_LEARN_FLAGS 2 +#define IFH_WID_SFLOW_ID 4 +#define IFH_WID_ACL_HIT 1 +#define IFH_WID_ACL_IDX 6 +#define IFH_WID_ISDX 8 +#define IFH_WID_DSTS 9 +#define IFH_WID_FLOOD 2 +#define IFH_WID_SEQ_OP 2 +#define IFH_WID_IPV 3 +#define IFH_WID_AFI 1 +#define IFH_WID_AGED 2 +#define IFH_WID_RTP_ID 10 +#define IFH_WID_RTP_SUBID 1 +#define IFH_WID_PN_DATA_STATUS 8 +#define IFH_WID_PN_TRANSF_STATUS_ZERO 1 +#define IFH_WID_PN_CC 16 + +#endif /* __LAN966X_IFH_H__ */ diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index a2825525ef78..4743cd7d2982 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -2,13 +2,26 @@ #include #include +#include #include #include #include +#include +#include #include #include "lan966x_main.h" +#define XTR_EOF_0 0x00000080U +#define XTR_EOF_1 0x01000080U +#define XTR_EOF_2 0x02000080U +#define XTR_EOF_3 0x03000080U +#define XTR_PRUNED 0x04000080U +#define XTR_ABORT 0x05000080U +#define XTR_ESCAPE 0x06000080U +#define XTR_NOT_READY 0x07000080U +#define XTR_VALID_BYTES(x) (4 - (((x) >> 24) & 3)) + #define READL_SLEEP_US 10 #define READL_TIMEOUT_US 100000000 @@ -87,23 +100,478 @@ static int lan966x_create_targets(struct platform_device *pdev, return 0; } +static int lan966x_port_get_phys_port_name(struct net_device *dev, + char *buf, size_t len) +{ + struct lan966x_port *port = netdev_priv(dev); + int ret; + + ret = snprintf(buf, len, "p%d", port->chip_port); + if (ret >= len) + return -EINVAL; + + return 0; +} + +static int lan966x_port_open(struct net_device *dev) +{ + struct lan966x_port *port = netdev_priv(dev); + struct lan966x *lan966x = port->lan966x; + int err; + + /* Enable receiving frames on the port, and activate auto-learning of + * MAC addresses. + */ + lan_rmw(ANA_PORT_CFG_LEARNAUTO_SET(1) | + ANA_PORT_CFG_RECV_ENA_SET(1) | + ANA_PORT_CFG_PORTID_VAL_SET(port->chip_port), + ANA_PORT_CFG_LEARNAUTO | + ANA_PORT_CFG_RECV_ENA | + ANA_PORT_CFG_PORTID_VAL, + lan966x, ANA_PORT_CFG(port->chip_port)); + + err = phylink_fwnode_phy_connect(port->phylink, port->fwnode, 0); + if (err) { + netdev_err(dev, "Could not attach to PHY\n"); + return err; + } + + phylink_start(port->phylink); + + return 0; +} + +static int lan966x_port_stop(struct net_device *dev) +{ + struct lan966x_port *port = netdev_priv(dev); + + lan966x_port_config_down(port); + phylink_stop(port->phylink); + phylink_disconnect_phy(port->phylink); + + return 0; +} + +static int lan966x_port_inj_status(struct lan966x *lan966x) +{ + return lan_rd(lan966x, QS_INJ_STATUS); +} + +static int lan966x_port_inj_ready(struct lan966x *lan966x, u8 grp) +{ + u32 val; + + return readx_poll_timeout(lan966x_port_inj_status, lan966x, val, + QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp), + READL_SLEEP_US, READL_TIMEOUT_US); +} + +static int lan966x_port_ifh_xmit(struct sk_buff *skb, + __be32 *ifh, + struct net_device *dev) +{ + struct lan966x_port *port = netdev_priv(dev); + struct lan966x *lan966x = port->lan966x; + u32 i, count, last; + u8 grp = 0; + u32 val; + int err; + + val = lan_rd(lan966x, QS_INJ_STATUS); + if (!(QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp)) || + (QS_INJ_STATUS_WMARK_REACHED_GET(val) & BIT(grp))) + return NETDEV_TX_BUSY; + + /* Write start of frame */ + lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) | + QS_INJ_CTRL_SOF_SET(1), + lan966x, QS_INJ_CTRL(grp)); + + /* Write IFH header */ + for (i = 0; i < IFH_LEN; ++i) { + /* Wait until the fifo is ready */ + err = lan966x_port_inj_ready(lan966x, grp); + if (err) + return NETDEV_TX_BUSY; + + lan_wr((__force u32)ifh[i], lan966x, QS_INJ_WR(grp)); + } + + /* Write frame */ + count = DIV_ROUND_UP(skb->len, 4); + last = skb->len % 4; + for (i = 0; i < count; ++i) { + /* Wait until the fifo is ready */ + err = lan966x_port_inj_ready(lan966x, grp); + if (err) + return NETDEV_TX_BUSY; + + lan_wr(((u32 *)skb->data)[i], lan966x, QS_INJ_WR(grp)); + } + + /* Add padding */ + while (i < (LAN966X_BUFFER_MIN_SZ / 4)) { + /* Wait until the fifo is ready */ + err = lan966x_port_inj_ready(lan966x, grp); + if (err) + return NETDEV_TX_BUSY; + + lan_wr(0, lan966x, QS_INJ_WR(grp)); + ++i; + } + + /* Inidcate EOF and valid bytes in the last word */ + lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) | + QS_INJ_CTRL_VLD_BYTES_SET(skb->len < LAN966X_BUFFER_MIN_SZ ? + 0 : last) | + QS_INJ_CTRL_EOF_SET(1), + lan966x, QS_INJ_CTRL(grp)); + + /* Add dummy CRC */ + lan_wr(0, lan966x, QS_INJ_WR(grp)); + skb_tx_timestamp(skb); + + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; + + dev_consume_skb_any(skb); + return NETDEV_TX_OK; +} + +static void lan966x_ifh_set_bypass(void *ifh, u64 bypass) +{ + packing(ifh, &bypass, IFH_POS_BYPASS + IFH_WID_BYPASS - 1, + IFH_POS_BYPASS, IFH_LEN * 4, PACK, 0); +} + +static void lan966x_ifh_set_port(void *ifh, u64 bypass) +{ + packing(ifh, &bypass, IFH_POS_DSTS + IFH_WID_DSTS - 1, + IFH_POS_DSTS, IFH_LEN * 4, PACK, 0); +} + +static void lan966x_ifh_set_qos_class(void *ifh, u64 bypass) +{ + packing(ifh, &bypass, IFH_POS_QOS_CLASS + IFH_WID_QOS_CLASS - 1, + IFH_POS_QOS_CLASS, IFH_LEN * 4, PACK, 0); +} + +static void lan966x_ifh_set_ipv(void *ifh, u64 bypass) +{ + packing(ifh, &bypass, IFH_POS_IPV + IFH_WID_IPV - 1, + IFH_POS_IPV, IFH_LEN * 4, PACK, 0); +} + +static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct lan966x_port *port = netdev_priv(dev); + __be32 ifh[IFH_LEN]; + + memset(ifh, 0x0, sizeof(__be32) * IFH_LEN); + + lan966x_ifh_set_bypass(ifh, 1); + lan966x_ifh_set_port(ifh, BIT_ULL(port->chip_port)); + lan966x_ifh_set_qos_class(ifh, skb->priority >= 7 ? 0x7 : skb->priority); + lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority); + + return lan966x_port_ifh_xmit(skb, ifh, dev); +} + +static void lan966x_set_promisc(struct lan966x_port *port, bool enable) +{ + struct lan966x *lan966x = port->lan966x; + + lan_rmw(ANA_CPU_FWD_CFG_SRC_COPY_ENA_SET(enable), + ANA_CPU_FWD_CFG_SRC_COPY_ENA, + lan966x, ANA_CPU_FWD_CFG(port->chip_port)); +} + +static void lan966x_port_change_rx_flags(struct net_device *dev, int flags) +{ + struct lan966x_port *port = netdev_priv(dev); + + if (!(flags & IFF_PROMISC)) + return; + + if (dev->flags & IFF_PROMISC) + lan966x_set_promisc(port, true); + else + lan966x_set_promisc(port, false); +} + +static int lan966x_port_change_mtu(struct net_device *dev, int new_mtu) +{ + struct lan966x_port *port = netdev_priv(dev); + struct lan966x *lan966x = port->lan966x; + + lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(new_mtu), + lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port)); + dev->mtu = new_mtu; + + return 0; +} + +static const struct net_device_ops lan966x_port_netdev_ops = { + .ndo_open = lan966x_port_open, + .ndo_stop = lan966x_port_stop, + .ndo_start_xmit = lan966x_port_xmit, + .ndo_change_rx_flags = lan966x_port_change_rx_flags, + .ndo_change_mtu = lan966x_port_change_mtu, + .ndo_get_phys_port_name = lan966x_port_get_phys_port_name, +}; + +static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp) +{ + return lan_rd(lan966x, QS_XTR_RD(grp)); +} + +static int lan966x_port_xtr_ready(struct lan966x *lan966x, u8 grp) +{ + u32 val; + + return read_poll_timeout(lan966x_port_xtr_status, val, + val != XTR_NOT_READY, + READL_SLEEP_US, READL_TIMEOUT_US, false, + lan966x, grp); +} + +static int lan966x_rx_frame_word(struct lan966x *lan966x, u8 grp, u32 *rval) +{ + u32 bytes_valid; + u32 val; + int err; + + val = lan_rd(lan966x, QS_XTR_RD(grp)); + if (val == XTR_NOT_READY) { + err = lan966x_port_xtr_ready(lan966x, grp); + if (err) + return -EIO; + } + + switch (val) { + case XTR_ABORT: + return -EIO; + case XTR_EOF_0: + case XTR_EOF_1: + case XTR_EOF_2: + case XTR_EOF_3: + case XTR_PRUNED: + bytes_valid = XTR_VALID_BYTES(val); + val = lan_rd(lan966x, QS_XTR_RD(grp)); + if (val == XTR_ESCAPE) + *rval = lan_rd(lan966x, QS_XTR_RD(grp)); + else + *rval = val; + + return bytes_valid; + case XTR_ESCAPE: + *rval = lan_rd(lan966x, QS_XTR_RD(grp)); + + return 4; + default: + *rval = val; + + return 4; + } +} + +static void lan966x_ifh_get_src_port(void *ifh, u64 *src_port) +{ + packing(ifh, src_port, IFH_POS_SRCPORT + IFH_WID_SRCPORT - 1, + IFH_POS_SRCPORT, IFH_LEN * 4, UNPACK, 0); +} + +static void lan966x_ifh_get_len(void *ifh, u64 *len) +{ + packing(ifh, len, IFH_POS_LEN + IFH_WID_LEN - 1, + IFH_POS_LEN, IFH_LEN * 4, UNPACK, 0); +} + +static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args) +{ + struct lan966x *lan966x = args; + int i, grp = 0, err = 0; + + if (!(lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp))) + return IRQ_NONE; + + do { + struct net_device *dev; + struct sk_buff *skb; + int sz = 0, buf_len; + u64 src_port, len; + u32 ifh[IFH_LEN]; + u32 *buf; + u32 val; + + for (i = 0; i < IFH_LEN; i++) { + err = lan966x_rx_frame_word(lan966x, grp, &ifh[i]); + if (err != 4) + goto recover; + } + + err = 0; + + lan966x_ifh_get_src_port(ifh, &src_port); + lan966x_ifh_get_len(ifh, &len); + + WARN_ON(src_port >= lan966x->num_phys_ports); + + dev = lan966x->ports[src_port]->dev; + skb = netdev_alloc_skb(dev, len); + if (unlikely(!skb)) { + netdev_err(dev, "Unable to allocate sk_buff\n"); + err = -ENOMEM; + break; + } + buf_len = len - ETH_FCS_LEN; + buf = (u32 *)skb_put(skb, buf_len); + + len = 0; + do { + sz = lan966x_rx_frame_word(lan966x, grp, &val); + if (sz < 0) { + kfree_skb(skb); + goto recover; + } + + *buf++ = val; + len += sz; + } while (len < buf_len); + + /* Read the FCS */ + sz = lan966x_rx_frame_word(lan966x, grp, &val); + if (sz < 0) { + kfree_skb(skb); + goto recover; + } + + /* Update the statistics if part of the FCS was read before */ + len -= ETH_FCS_LEN - sz; + + if (unlikely(dev->features & NETIF_F_RXFCS)) { + buf = (u32 *)skb_put(skb, ETH_FCS_LEN); + *buf = val; + } + + if (sz < 0) { + err = sz; + break; + } + + skb->protocol = eth_type_trans(skb, dev); + + netif_rx_ni(skb); + dev->stats.rx_bytes += len; + dev->stats.rx_packets++; + +recover: + if (sz < 0 || err) + lan_rd(lan966x, QS_XTR_RD(grp)); + + } while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp)); + + return IRQ_HANDLED; +} + +static void lan966x_cleanup_ports(struct lan966x *lan966x) +{ + struct lan966x_port *port; + int p; + + for (p = 0; p < lan966x->num_phys_ports; p++) { + port = lan966x->ports[p]; + if (!port) + continue; + + if (port->dev) + unregister_netdev(port->dev); + + if (port->phylink) { + rtnl_lock(); + lan966x_port_stop(port->dev); + rtnl_unlock(); + phylink_destroy(port->phylink); + port->phylink = NULL; + } + + if (port->fwnode) + fwnode_handle_put(port->fwnode); + } + + disable_irq(lan966x->xtr_irq); + lan966x->xtr_irq = -ENXIO; +} + static int lan966x_probe_port(struct lan966x *lan966x, u32 p, - phy_interface_t phy_mode) + phy_interface_t phy_mode, + struct fwnode_handle *portnp) { struct lan966x_port *port; + struct phylink *phylink; + struct net_device *dev; + int err; if (p >= lan966x->num_phys_ports) return -EINVAL; - port = devm_kzalloc(lan966x->dev, sizeof(*port), GFP_KERNEL); - if (!port) + dev = devm_alloc_etherdev_mqs(lan966x->dev, + sizeof(struct lan966x_port), 8, 1); + if (!dev) return -ENOMEM; + SET_NETDEV_DEV(dev, lan966x->dev); + port = netdev_priv(dev); + port->dev = dev; port->lan966x = lan966x; port->chip_port = p; port->pvid = PORT_PVID; lan966x->ports[p] = port; + dev->max_mtu = ETH_MAX_MTU; + + dev->netdev_ops = &lan966x_port_netdev_ops; + dev->needed_headroom = IFH_LEN * sizeof(u32); + + port->phylink_config.dev = &port->dev->dev; + port->phylink_config.type = PHYLINK_NETDEV; + port->phylink_pcs.poll = true; + port->phylink_pcs.ops = &lan966x_phylink_pcs_ops; + + port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | + MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD; + + __set_bit(PHY_INTERFACE_MODE_MII, + port->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_GMII, + port->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_SGMII, + port->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_QSGMII, + port->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_1000BASEX, + port->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_2500BASEX, + port->phylink_config.supported_interfaces); + + phylink = phylink_create(&port->phylink_config, + portnp, + phy_mode, + &lan966x_phylink_mac_ops); + if (IS_ERR(phylink)) { + port->dev = NULL; + return PTR_ERR(phylink); + } + + port->phylink = phylink; + phylink_set_pcs(phylink, &port->phylink_pcs); + + err = register_netdev(dev); + if (err) { + dev_err(lan966x->dev, "register_netdev failed\n"); + return err; + } + return 0; } @@ -318,21 +786,45 @@ static int lan966x_probe(struct platform_device *pdev) /* There QS system has 32KB of memory */ lan966x->shared_queue_sz = LAN966X_BUFFER_MEMORY; + /* set irq */ + lan966x->xtr_irq = platform_get_irq_byname(pdev, "xtr"); + if (lan966x->xtr_irq <= 0) + return -EINVAL; + + err = devm_request_threaded_irq(&pdev->dev, lan966x->xtr_irq, NULL, + lan966x_xtr_irq_handler, IRQF_ONESHOT, + "frame extraction", lan966x); + if (err) { + pr_err("Unable to use xtr irq"); + return -ENODEV; + } + /* init switch */ lan966x_init(lan966x); /* go over the child nodes */ fwnode_for_each_available_child_node(ports, portnp) { phy_interface_t phy_mode; + struct phy *serdes; u32 p; if (fwnode_property_read_u32(portnp, "reg", &p)) continue; phy_mode = fwnode_get_phy_mode(portnp); - err = lan966x_probe_port(lan966x, p, phy_mode); + err = lan966x_probe_port(lan966x, p, phy_mode, portnp); if (err) goto cleanup_ports; + + /* Read needed configuration */ + lan966x->ports[p]->config.portmode = phy_mode; + lan966x->ports[p]->fwnode = fwnode_handle_get(portnp); + + serdes = devm_of_phy_get(lan966x->dev, to_of_node(portnp), NULL); + if (!IS_ERR(serdes)) + lan966x->ports[p]->serdes = serdes; + + lan966x_port_init(lan966x->ports[p]); } return 0; @@ -340,11 +832,23 @@ static int lan966x_probe(struct platform_device *pdev) cleanup_ports: fwnode_handle_put(portnp); + lan966x_cleanup_ports(lan966x); + return err; } +static int lan966x_remove(struct platform_device *pdev) +{ + struct lan966x *lan966x = platform_get_drvdata(pdev); + + lan966x_cleanup_ports(lan966x); + + return 0; +} + static struct platform_driver lan966x_driver = { .probe = lan966x_probe, + .remove = lan966x_remove, .driver = { .name = "lan966x-switch", .of_match_table = lan966x_match, diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h index 7a1ff9d19fbf..39aecf532ba9 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h @@ -3,7 +3,12 @@ #ifndef __LAN966X_MAIN_H__ #define __LAN966X_MAIN_H__ +#include +#include +#include + #include "lan966x_regs.h" +#include "lan966x_ifh.h" #define LAN966X_BUFFER_CELL_SZ 64 #define LAN966X_BUFFER_MEMORY (160 * 1024) @@ -27,6 +32,7 @@ #define PGID_MCIPV6 (PGID_AGGR - 1) #define LAN966X_SPEED_NONE 0 +#define LAN966X_SPEED_2500 1 #define LAN966X_SPEED_1000 1 #define LAN966X_SPEED_100 2 #define LAN966X_SPEED_10 3 @@ -44,15 +50,47 @@ struct lan966x { void __iomem *regs[NUM_TARGETS]; int shared_queue_sz; + + /* interrupts */ + int xtr_irq; +}; + +struct lan966x_port_config { + phy_interface_t portmode; + const unsigned long *advertising; + int speed; + int duplex; + u32 pause; + bool inband; + bool autoneg; }; struct lan966x_port { + struct net_device *dev; struct lan966x *lan966x; u8 chip_port; u16 pvid; + + struct phylink_config phylink_config; + struct phylink_pcs phylink_pcs; + struct lan966x_port_config config; + struct phylink *phylink; + struct phy *serdes; + struct fwnode_handle *fwnode; }; +extern const struct phylink_mac_ops lan966x_phylink_mac_ops; +extern const struct phylink_pcs_ops lan966x_phylink_pcs_ops; + +void lan966x_port_config_down(struct lan966x_port *port); +void lan966x_port_config_up(struct lan966x_port *port); +void lan966x_port_status_get(struct lan966x_port *port, + struct phylink_link_state *state); +int lan966x_port_pcs_set(struct lan966x_port *port, + struct lan966x_port_config *config); +void lan966x_port_init(struct lan966x_port *port); + static inline void __iomem *lan_addr(void __iomem *base[], int id, int tinst, int tcnt, int gbase, int ginst, diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_phylink.c b/drivers/net/ethernet/microchip/lan966x/lan966x_phylink.c new file mode 100644 index 000000000000..b66a9aa00ea4 --- /dev/null +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_phylink.c @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include +#include +#include +#include +#include +#include + +#include "lan966x_main.h" + +static void lan966x_phylink_mac_config(struct phylink_config *config, + unsigned int mode, + const struct phylink_link_state *state) +{ +} + +static int lan966x_phylink_mac_prepare(struct phylink_config *config, + unsigned int mode, + phy_interface_t iface) +{ + struct lan966x_port *port = netdev_priv(to_net_dev(config->dev)); + int err; + + if (port->serdes) { + err = phy_set_mode_ext(port->serdes, PHY_MODE_ETHERNET, + iface); + if (err) { + netdev_err(to_net_dev(config->dev), + "Could not set mode of SerDes\n"); + return err; + } + } + + return 0; +} + +static void lan966x_phylink_mac_link_up(struct phylink_config *config, + struct phy_device *phy, + unsigned int mode, + phy_interface_t interface, + int speed, int duplex, + bool tx_pause, bool rx_pause) +{ + struct lan966x_port *port = netdev_priv(to_net_dev(config->dev)); + struct lan966x_port_config *port_config = &port->config; + + port_config->duplex = duplex; + port_config->speed = speed; + port_config->pause = 0; + port_config->pause |= tx_pause ? MLO_PAUSE_TX : 0; + port_config->pause |= rx_pause ? MLO_PAUSE_RX : 0; + + lan966x_port_config_up(port); +} + +static void lan966x_phylink_mac_link_down(struct phylink_config *config, + unsigned int mode, + phy_interface_t interface) +{ + struct lan966x_port *port = netdev_priv(to_net_dev(config->dev)); + struct lan966x *lan966x = port->lan966x; + + lan966x_port_config_down(port); + + /* Take PCS out of reset */ + lan_rmw(DEV_CLOCK_CFG_PCS_RX_RST_SET(0) | + DEV_CLOCK_CFG_PCS_TX_RST_SET(0), + DEV_CLOCK_CFG_PCS_RX_RST | + DEV_CLOCK_CFG_PCS_TX_RST, + lan966x, DEV_CLOCK_CFG(port->chip_port)); +} + +static struct lan966x_port *lan966x_pcs_to_port(struct phylink_pcs *pcs) +{ + return container_of(pcs, struct lan966x_port, phylink_pcs); +} + +static void lan966x_pcs_get_state(struct phylink_pcs *pcs, + struct phylink_link_state *state) +{ + struct lan966x_port *port = lan966x_pcs_to_port(pcs); + + lan966x_port_status_get(port, state); +} + +static int lan966x_pcs_config(struct phylink_pcs *pcs, + unsigned int mode, + phy_interface_t interface, + const unsigned long *advertising, + bool permit_pause_to_mac) +{ + struct lan966x_port *port = lan966x_pcs_to_port(pcs); + struct lan966x_port_config config; + int ret; + + config = port->config; + config.portmode = interface; + config.inband = phylink_autoneg_inband(mode); + config.autoneg = phylink_test(advertising, Autoneg); + config.advertising = advertising; + + ret = lan966x_port_pcs_set(port, &config); + if (ret) + netdev_err(port->dev, "port PCS config failed: %d\n", ret); + + return ret; +} + +static void lan966x_pcs_aneg_restart(struct phylink_pcs *pcs) +{ + /* Currently not used */ +} + +const struct phylink_mac_ops lan966x_phylink_mac_ops = { + .validate = phylink_generic_validate, + .mac_config = lan966x_phylink_mac_config, + .mac_prepare = lan966x_phylink_mac_prepare, + .mac_link_down = lan966x_phylink_mac_link_down, + .mac_link_up = lan966x_phylink_mac_link_up, +}; + +const struct phylink_pcs_ops lan966x_phylink_pcs_ops = { + .pcs_get_state = lan966x_pcs_get_state, + .pcs_config = lan966x_pcs_config, + .pcs_an_restart = lan966x_pcs_aneg_restart, +}; diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_port.c b/drivers/net/ethernet/microchip/lan966x/lan966x_port.c new file mode 100644 index 000000000000..2ddb20585d40 --- /dev/null +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_port.c @@ -0,0 +1,412 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include +#include + +#include "lan966x_main.h" + +/* Watermark encode */ +#define MULTIPLIER_BIT BIT(8) +static u32 lan966x_wm_enc(u32 value) +{ + value /= LAN966X_BUFFER_CELL_SZ; + + if (value >= MULTIPLIER_BIT) { + value /= 16; + if (value >= MULTIPLIER_BIT) + value = (MULTIPLIER_BIT - 1); + + value |= MULTIPLIER_BIT; + } + + return value; +} + +static void lan966x_port_link_down(struct lan966x_port *port) +{ + struct lan966x *lan966x = port->lan966x; + u32 val, delay = 0; + + /* 0.5: Disable any AFI */ + lan_rmw(AFI_PORT_CFG_FC_SKIP_TTI_INJ_SET(1) | + AFI_PORT_CFG_FRM_OUT_MAX_SET(0), + AFI_PORT_CFG_FC_SKIP_TTI_INJ | + AFI_PORT_CFG_FRM_OUT_MAX, + lan966x, AFI_PORT_CFG(port->chip_port)); + + /* wait for reg afi_port_frm_out to become 0 for the port */ + while (true) { + val = lan_rd(lan966x, AFI_PORT_FRM_OUT(port->chip_port)); + if (!AFI_PORT_FRM_OUT_FRM_OUT_CNT_GET(val)) + break; + + usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC); + delay++; + if (delay == 2000) { + pr_err("AFI timeout chip port %u", port->chip_port); + break; + } + } + + delay = 0; + + /* 1: Reset the PCS Rx clock domain */ + lan_rmw(DEV_CLOCK_CFG_PCS_RX_RST_SET(1), + DEV_CLOCK_CFG_PCS_RX_RST, + lan966x, DEV_CLOCK_CFG(port->chip_port)); + + /* 2: Disable MAC frame reception */ + lan_rmw(DEV_MAC_ENA_CFG_RX_ENA_SET(0), + DEV_MAC_ENA_CFG_RX_ENA, + lan966x, DEV_MAC_ENA_CFG(port->chip_port)); + + /* 3: Disable traffic being sent to or from switch port */ + lan_rmw(QSYS_SW_PORT_MODE_PORT_ENA_SET(0), + QSYS_SW_PORT_MODE_PORT_ENA, + lan966x, QSYS_SW_PORT_MODE(port->chip_port)); + + /* 4: Disable dequeuing from the egress queues */ + lan_rmw(QSYS_PORT_MODE_DEQUEUE_DIS_SET(1), + QSYS_PORT_MODE_DEQUEUE_DIS, + lan966x, QSYS_PORT_MODE(port->chip_port)); + + /* 5: Disable Flowcontrol */ + lan_rmw(SYS_PAUSE_CFG_PAUSE_ENA_SET(0), + SYS_PAUSE_CFG_PAUSE_ENA, + lan966x, SYS_PAUSE_CFG(port->chip_port)); + + /* 5.1: Disable PFC */ + lan_rmw(QSYS_SW_PORT_MODE_TX_PFC_ENA_SET(0), + QSYS_SW_PORT_MODE_TX_PFC_ENA, + lan966x, QSYS_SW_PORT_MODE(port->chip_port)); + + /* 6: Wait a worst case time 8ms (jumbo/10Mbit) */ + usleep_range(8 * USEC_PER_MSEC, 9 * USEC_PER_MSEC); + + /* 7: Disable HDX backpressure */ + lan_rmw(SYS_FRONT_PORT_MODE_HDX_MODE_SET(0), + SYS_FRONT_PORT_MODE_HDX_MODE, + lan966x, SYS_FRONT_PORT_MODE(port->chip_port)); + + /* 8: Flush the queues accociated with the port */ + lan_rmw(QSYS_SW_PORT_MODE_AGING_MODE_SET(3), + QSYS_SW_PORT_MODE_AGING_MODE, + lan966x, QSYS_SW_PORT_MODE(port->chip_port)); + + /* 9: Enable dequeuing from the egress queues */ + lan_rmw(QSYS_PORT_MODE_DEQUEUE_DIS_SET(0), + QSYS_PORT_MODE_DEQUEUE_DIS, + lan966x, QSYS_PORT_MODE(port->chip_port)); + + /* 10: Wait until flushing is complete */ + while (true) { + val = lan_rd(lan966x, QSYS_SW_STATUS(port->chip_port)); + if (!QSYS_SW_STATUS_EQ_AVAIL_GET(val)) + break; + + usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC); + delay++; + if (delay == 2000) { + pr_err("Flush timeout chip port %u", port->chip_port); + break; + } + } + + /* 11: Reset the Port and MAC clock domains */ + lan_rmw(DEV_MAC_ENA_CFG_TX_ENA_SET(0), + DEV_MAC_ENA_CFG_TX_ENA, + lan966x, DEV_MAC_ENA_CFG(port->chip_port)); + + lan_rmw(DEV_CLOCK_CFG_PORT_RST_SET(1), + DEV_CLOCK_CFG_PORT_RST, + lan966x, DEV_CLOCK_CFG(port->chip_port)); + + usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC); + + lan_rmw(DEV_CLOCK_CFG_MAC_TX_RST_SET(1) | + DEV_CLOCK_CFG_MAC_RX_RST_SET(1) | + DEV_CLOCK_CFG_PORT_RST_SET(1), + DEV_CLOCK_CFG_MAC_TX_RST | + DEV_CLOCK_CFG_MAC_RX_RST | + DEV_CLOCK_CFG_PORT_RST, + lan966x, DEV_CLOCK_CFG(port->chip_port)); + + /* 12: Clear flushing */ + lan_rmw(QSYS_SW_PORT_MODE_AGING_MODE_SET(2), + QSYS_SW_PORT_MODE_AGING_MODE, + lan966x, QSYS_SW_PORT_MODE(port->chip_port)); + + /* The port is disabled and flushed, now set up the port in the + * new operating mode + */ +} + +static void lan966x_port_link_up(struct lan966x_port *port) +{ + struct lan966x_port_config *config = &port->config; + struct lan966x *lan966x = port->lan966x; + int speed = 0, mode = 0; + int atop_wm = 0; + + switch (config->speed) { + case SPEED_10: + speed = LAN966X_SPEED_10; + break; + case SPEED_100: + speed = LAN966X_SPEED_100; + break; + case SPEED_1000: + speed = LAN966X_SPEED_1000; + mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA_SET(1); + break; + case SPEED_2500: + speed = LAN966X_SPEED_2500; + mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA_SET(1); + break; + } + + /* Also the GIGA_MODE_ENA(1) needs to be set regardless of the + * port speed for QSGMII ports. + */ + if (config->portmode == PHY_INTERFACE_MODE_QSGMII) + mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA_SET(1); + + lan_wr(config->duplex | mode, + lan966x, DEV_MAC_MODE_CFG(port->chip_port)); + + lan_rmw(DEV_MAC_IFG_CFG_TX_IFG_SET(config->duplex ? 6 : 5) | + DEV_MAC_IFG_CFG_RX_IFG1_SET(config->speed == SPEED_10 ? 2 : 1) | + DEV_MAC_IFG_CFG_RX_IFG2_SET(2), + DEV_MAC_IFG_CFG_TX_IFG | + DEV_MAC_IFG_CFG_RX_IFG1 | + DEV_MAC_IFG_CFG_RX_IFG2, + lan966x, DEV_MAC_IFG_CFG(port->chip_port)); + + lan_rmw(DEV_MAC_HDX_CFG_SEED_SET(4) | + DEV_MAC_HDX_CFG_SEED_LOAD_SET(1), + DEV_MAC_HDX_CFG_SEED | + DEV_MAC_HDX_CFG_SEED_LOAD, + lan966x, DEV_MAC_HDX_CFG(port->chip_port)); + + if (config->portmode == PHY_INTERFACE_MODE_GMII) { + if (config->speed == SPEED_1000) + lan_rmw(CHIP_TOP_CUPHY_PORT_CFG_GTX_CLK_ENA_SET(1), + CHIP_TOP_CUPHY_PORT_CFG_GTX_CLK_ENA, + lan966x, + CHIP_TOP_CUPHY_PORT_CFG(port->chip_port)); + else + lan_rmw(CHIP_TOP_CUPHY_PORT_CFG_GTX_CLK_ENA_SET(0), + CHIP_TOP_CUPHY_PORT_CFG_GTX_CLK_ENA, + lan966x, + CHIP_TOP_CUPHY_PORT_CFG(port->chip_port)); + } + + /* No PFC */ + lan_wr(ANA_PFC_CFG_FC_LINK_SPEED_SET(speed), + lan966x, ANA_PFC_CFG(port->chip_port)); + + lan_rmw(DEV_PCS1G_CFG_PCS_ENA_SET(1), + DEV_PCS1G_CFG_PCS_ENA, + lan966x, DEV_PCS1G_CFG(port->chip_port)); + + lan_rmw(DEV_PCS1G_SD_CFG_SD_ENA_SET(0), + DEV_PCS1G_SD_CFG_SD_ENA, + lan966x, DEV_PCS1G_SD_CFG(port->chip_port)); + + /* Set Pause WM hysteresis, start/stop are in 1518 byte units */ + lan_wr(SYS_PAUSE_CFG_PAUSE_ENA_SET(1) | + SYS_PAUSE_CFG_PAUSE_STOP_SET(lan966x_wm_enc(4 * 1518)) | + SYS_PAUSE_CFG_PAUSE_START_SET(lan966x_wm_enc(6 * 1518)), + lan966x, SYS_PAUSE_CFG(port->chip_port)); + + /* Set SMAC of Pause frame (00:00:00:00:00:00) */ + lan_wr(0, lan966x, DEV_FC_MAC_LOW_CFG(port->chip_port)); + lan_wr(0, lan966x, DEV_FC_MAC_HIGH_CFG(port->chip_port)); + + /* Flow control */ + lan_rmw(SYS_MAC_FC_CFG_FC_LINK_SPEED_SET(speed) | + SYS_MAC_FC_CFG_FC_LATENCY_CFG_SET(7) | + SYS_MAC_FC_CFG_ZERO_PAUSE_ENA_SET(1) | + SYS_MAC_FC_CFG_PAUSE_VAL_CFG_SET(0xffff) | + SYS_MAC_FC_CFG_RX_FC_ENA_SET(config->pause & MLO_PAUSE_RX ? 1 : 0) | + SYS_MAC_FC_CFG_TX_FC_ENA_SET(config->pause & MLO_PAUSE_TX ? 1 : 0), + SYS_MAC_FC_CFG_FC_LINK_SPEED | + SYS_MAC_FC_CFG_FC_LATENCY_CFG | + SYS_MAC_FC_CFG_ZERO_PAUSE_ENA | + SYS_MAC_FC_CFG_PAUSE_VAL_CFG | + SYS_MAC_FC_CFG_RX_FC_ENA | + SYS_MAC_FC_CFG_TX_FC_ENA, + lan966x, SYS_MAC_FC_CFG(port->chip_port)); + + /* Tail dropping watermark */ + atop_wm = lan966x->shared_queue_sz; + + /* The total memory size is diveded by number of front ports plus CPU + * port + */ + lan_wr(lan966x_wm_enc(atop_wm / lan966x->num_phys_ports + 1), lan966x, + SYS_ATOP(port->chip_port)); + lan_wr(lan966x_wm_enc(atop_wm), lan966x, SYS_ATOP_TOT_CFG); + + /* This needs to be at the end */ + /* Enable MAC module */ + lan_wr(DEV_MAC_ENA_CFG_RX_ENA_SET(1) | + DEV_MAC_ENA_CFG_TX_ENA_SET(1), + lan966x, DEV_MAC_ENA_CFG(port->chip_port)); + + /* Take out the clock from reset */ + lan_wr(DEV_CLOCK_CFG_LINK_SPEED_SET(speed), + lan966x, DEV_CLOCK_CFG(port->chip_port)); + + /* Core: Enable port for frame transfer */ + lan_wr(QSYS_SW_PORT_MODE_PORT_ENA_SET(1) | + QSYS_SW_PORT_MODE_SCH_NEXT_CFG_SET(1) | + QSYS_SW_PORT_MODE_INGRESS_DROP_MODE_SET(1), + lan966x, QSYS_SW_PORT_MODE(port->chip_port)); + + lan_rmw(AFI_PORT_CFG_FC_SKIP_TTI_INJ_SET(0) | + AFI_PORT_CFG_FRM_OUT_MAX_SET(16), + AFI_PORT_CFG_FC_SKIP_TTI_INJ | + AFI_PORT_CFG_FRM_OUT_MAX, + lan966x, AFI_PORT_CFG(port->chip_port)); +} + +void lan966x_port_config_down(struct lan966x_port *port) +{ + lan966x_port_link_down(port); +} + +void lan966x_port_config_up(struct lan966x_port *port) +{ + lan966x_port_link_up(port); +} + +void lan966x_port_status_get(struct lan966x_port *port, + struct phylink_link_state *state) +{ + struct lan966x *lan966x = port->lan966x; + bool link_down; + u16 bmsr = 0; + u16 lp_adv; + u32 val; + + val = lan_rd(lan966x, DEV_PCS1G_STICKY(port->chip_port)); + link_down = DEV_PCS1G_STICKY_LINK_DOWN_STICKY_GET(val); + if (link_down) + lan_wr(val, lan966x, DEV_PCS1G_STICKY(port->chip_port)); + + /* Get both current Link and Sync status */ + val = lan_rd(lan966x, DEV_PCS1G_LINK_STATUS(port->chip_port)); + state->link = DEV_PCS1G_LINK_STATUS_LINK_STATUS_GET(val) && + DEV_PCS1G_LINK_STATUS_SYNC_STATUS_GET(val); + state->link &= !link_down; + + /* Get PCS ANEG status register */ + val = lan_rd(lan966x, DEV_PCS1G_ANEG_STATUS(port->chip_port)); + /* Aneg complete provides more information */ + if (DEV_PCS1G_ANEG_STATUS_ANEG_COMPLETE_GET(val)) { + state->an_complete = true; + + bmsr |= state->link ? BMSR_LSTATUS : 0; + bmsr |= BMSR_ANEGCOMPLETE; + + lp_adv = DEV_PCS1G_ANEG_STATUS_LP_ADV_GET(val); + phylink_mii_c22_pcs_decode_state(state, bmsr, lp_adv); + } else { + if (!state->link) + return; + + if (state->interface == PHY_INTERFACE_MODE_1000BASEX) + state->speed = SPEED_1000; + else if (state->interface == PHY_INTERFACE_MODE_2500BASEX) + state->speed = SPEED_2500; + + state->duplex = DUPLEX_FULL; + } +} + +int lan966x_port_pcs_set(struct lan966x_port *port, + struct lan966x_port_config *config) +{ + struct lan966x *lan966x = port->lan966x; + bool inband_aneg = false; + bool outband; + int err; + + if (config->inband) { + if (config->portmode == PHY_INTERFACE_MODE_SGMII || + config->portmode == PHY_INTERFACE_MODE_QSGMII) + inband_aneg = true; /* Cisco-SGMII in-band-aneg */ + else if (config->portmode == PHY_INTERFACE_MODE_1000BASEX && + config->autoneg) + inband_aneg = true; /* Clause-37 in-band-aneg */ + + if (config->speed > 0) { + err = phy_set_speed(port->serdes, config->speed); + if (err) + return err; + } + outband = false; + } else { + outband = true; + } + + /* Disable or enable inband */ + lan_rmw(DEV_PCS1G_MODE_CFG_SGMII_MODE_ENA_SET(outband), + DEV_PCS1G_MODE_CFG_SGMII_MODE_ENA, + lan966x, DEV_PCS1G_MODE_CFG(port->chip_port)); + + /* Enable PCS */ + lan_wr(DEV_PCS1G_CFG_PCS_ENA_SET(1), + lan966x, DEV_PCS1G_CFG(port->chip_port)); + + if (inband_aneg) { + int adv = phylink_mii_c22_pcs_encode_advertisement(config->portmode, + config->advertising); + if (adv >= 0) + /* Enable in-band aneg */ + lan_wr(DEV_PCS1G_ANEG_CFG_ADV_ABILITY_SET(adv) | + DEV_PCS1G_ANEG_CFG_SW_RESOLVE_ENA_SET(1) | + DEV_PCS1G_ANEG_CFG_ENA_SET(1) | + DEV_PCS1G_ANEG_CFG_RESTART_ONE_SHOT_SET(1), + lan966x, DEV_PCS1G_ANEG_CFG(port->chip_port)); + } else { + lan_wr(0, lan966x, DEV_PCS1G_ANEG_CFG(port->chip_port)); + } + + /* Take PCS out of reset */ + lan_rmw(DEV_CLOCK_CFG_LINK_SPEED_SET(2) | + DEV_CLOCK_CFG_PCS_RX_RST_SET(0) | + DEV_CLOCK_CFG_PCS_TX_RST_SET(0), + DEV_CLOCK_CFG_LINK_SPEED | + DEV_CLOCK_CFG_PCS_RX_RST | + DEV_CLOCK_CFG_PCS_TX_RST, + lan966x, DEV_CLOCK_CFG(port->chip_port)); + + port->config = *config; + + return 0; +} + +void lan966x_port_init(struct lan966x_port *port) +{ + struct lan966x_port_config *config = &port->config; + struct lan966x *lan966x = port->lan966x; + + lan_rmw(ANA_PORT_CFG_LEARN_ENA_SET(0), + ANA_PORT_CFG_LEARN_ENA, + lan966x, ANA_PORT_CFG(port->chip_port)); + + lan966x_port_config_down(port); + + if (config->portmode != PHY_INTERFACE_MODE_QSGMII) + return; + + lan_rmw(DEV_CLOCK_CFG_PCS_RX_RST_SET(0) | + DEV_CLOCK_CFG_PCS_TX_RST_SET(0) | + DEV_CLOCK_CFG_LINK_SPEED_SET(LAN966X_SPEED_1000), + DEV_CLOCK_CFG_PCS_RX_RST | + DEV_CLOCK_CFG_PCS_TX_RST | + DEV_CLOCK_CFG_LINK_SPEED, + lan966x, DEV_CLOCK_CFG(port->chip_port)); +} -- 2.33.0