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From 412449bacdb46b548fd08af19148019e2e979294 Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Wed, 2 Mar 2016 04:27:10 +0100
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Subject: [PATCH 49/91] net-next: mediatek: add support for MT7623 ethernet
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Add ethernet support for MediaTek SoCs from the MT7623 family. These have
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dual GMAC. Depending on the exact version, there might be a built-in
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Gigabit switch (MT7530). The core does not have the typical DMA ring setup.
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Instead there is a linked list that we add descriptors to. There is only
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one linked list that both MACs use together. There is a special field
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inside the TX descriptors called the VQID. This allows us to assign packets
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to different internal queues. By using a separate id for each MAC we are
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able to get deterministic results for BQL. Additionally we need to
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provide the core with a block of scratch memory that is the same size as
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the RX ring and data buffer. This is really needed to make the HW datapath
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work. Although the driver does not support this yet, we still need to
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assign the memory and tell the core about it for RX to work.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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Signed-off-by: Michael Lee <igvtee@gmail.com>
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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drivers/net/ethernet/mediatek/mtk_eth_soc.c | 1807 +++++++++++++++++++++++++++
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drivers/net/ethernet/mediatek/mtk_eth_soc.h | 421 +++++++
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2 files changed, 2228 insertions(+)
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create mode 100644 drivers/net/ethernet/mediatek/mtk_eth_soc.c
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create mode 100644 drivers/net/ethernet/mediatek/mtk_eth_soc.h
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--- /dev/null
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@@ -0,0 +1,1807 @@
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+/* This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; version 2 of the License
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
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+ * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
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+ * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
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+ */
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+
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+#include <linux/of_device.h>
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+#include <linux/of_mdio.h>
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+#include <linux/of_net.h>
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+#include <linux/mfd/syscon.h>
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+#include <linux/regmap.h>
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+#include <linux/clk.h>
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+#include <linux/if_vlan.h>
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+#include <linux/reset.h>
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+#include <linux/tcp.h>
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+
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+#include "mtk_eth_soc.h"
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+
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+static int mtk_msg_level = -1;
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+module_param_named(msg_level, mtk_msg_level, int, 0);
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+MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)");
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+
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+#define MTK_ETHTOOL_STAT(x) { #x, \
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+ offsetof(struct mtk_hw_stats, x) / sizeof(u64) }
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+
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+/* strings used by ethtool */
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+static const struct mtk_ethtool_stats {
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+ char str[ETH_GSTRING_LEN];
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+ u32 offset;
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+} mtk_ethtool_stats[] = {
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+ MTK_ETHTOOL_STAT(tx_bytes),
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+ MTK_ETHTOOL_STAT(tx_packets),
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+ MTK_ETHTOOL_STAT(tx_skip),
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+ MTK_ETHTOOL_STAT(tx_collisions),
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+ MTK_ETHTOOL_STAT(rx_bytes),
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+ MTK_ETHTOOL_STAT(rx_packets),
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+ MTK_ETHTOOL_STAT(rx_overflow),
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+ MTK_ETHTOOL_STAT(rx_fcs_errors),
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+ MTK_ETHTOOL_STAT(rx_short_errors),
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+ MTK_ETHTOOL_STAT(rx_long_errors),
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+ MTK_ETHTOOL_STAT(rx_checksum_errors),
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+ MTK_ETHTOOL_STAT(rx_flow_control_packets),
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+};
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+
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+void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg)
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+{
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+ __raw_writel(val, eth->base + reg);
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+}
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+
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+u32 mtk_r32(struct mtk_eth *eth, unsigned reg)
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+{
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+ return __raw_readl(eth->base + reg);
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+}
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+
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+static int mtk_mdio_busy_wait(struct mtk_eth *eth)
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+{
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+ unsigned long t_start = jiffies;
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+
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+ while (1) {
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+ if (!(mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_ACCESS))
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+ return 0;
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+ if (time_after(jiffies, t_start + PHY_IAC_TIMEOUT))
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+ break;
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+ usleep_range(10, 20);
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+ }
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+
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+ dev_err(eth->dev, "mdio: MDIO timeout\n");
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+ return -1;
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+}
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+
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+u32 _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr,
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+ u32 phy_register, u32 write_data)
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+{
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+ if (mtk_mdio_busy_wait(eth))
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+ return -1;
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+
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+ write_data &= 0xffff;
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+
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+ mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_WRITE |
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+ (phy_register << PHY_IAC_REG_SHIFT) |
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+ (phy_addr << PHY_IAC_ADDR_SHIFT) | write_data,
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+ MTK_PHY_IAC);
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+
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+ if (mtk_mdio_busy_wait(eth))
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+ return -1;
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+
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+ return 0;
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+}
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+
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+u32 _mtk_mdio_read(struct mtk_eth *eth, int phy_addr, int phy_reg)
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+{
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+ u32 d;
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+
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+ if (mtk_mdio_busy_wait(eth))
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+ return 0xffff;
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+
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+ mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_READ |
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+ (phy_reg << PHY_IAC_REG_SHIFT) |
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+ (phy_addr << PHY_IAC_ADDR_SHIFT),
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+ MTK_PHY_IAC);
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+
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+ if (mtk_mdio_busy_wait(eth))
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+ return 0xffff;
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+
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+ d = mtk_r32(eth, MTK_PHY_IAC) & 0xffff;
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+
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+ return d;
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+}
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+
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+static int mtk_mdio_write(struct mii_bus *bus, int phy_addr,
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+ int phy_reg, u16 val)
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+{
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+ struct mtk_eth *eth = bus->priv;
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+
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+ return _mtk_mdio_write(eth, phy_addr, phy_reg, val);
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+}
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+
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+static int mtk_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg)
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+{
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+ struct mtk_eth *eth = bus->priv;
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+
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+ return _mtk_mdio_read(eth, phy_addr, phy_reg);
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+}
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+
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+static void mtk_phy_link_adjust(struct net_device *dev)
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+{
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+ struct mtk_mac *mac = netdev_priv(dev);
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+ u32 mcr = MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG |
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+ MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN |
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+ MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN |
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+ MAC_MCR_BACKPR_EN;
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+
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+ switch (mac->phy_dev->speed) {
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+ case SPEED_1000:
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+ mcr |= MAC_MCR_SPEED_1000;
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+ break;
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+ case SPEED_100:
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+ mcr |= MAC_MCR_SPEED_100;
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+ break;
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+ };
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+
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+ if (mac->phy_dev->link)
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+ mcr |= MAC_MCR_FORCE_LINK;
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+
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+ if (mac->phy_dev->duplex)
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+ mcr |= MAC_MCR_FORCE_DPX;
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+
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+ if (mac->phy_dev->pause)
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+ mcr |= MAC_MCR_FORCE_RX_FC | MAC_MCR_FORCE_TX_FC;
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+
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+ mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id));
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+
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+ if (mac->phy_dev->link)
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+ netif_carrier_on(dev);
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+ else
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+ netif_carrier_off(dev);
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+}
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+
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+static int mtk_phy_connect_node(struct mtk_eth *eth, struct mtk_mac *mac,
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+ struct device_node *phy_node)
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+{
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+ const __be32 *_addr = NULL;
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+ struct phy_device *phydev;
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+ int phy_mode, addr;
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+
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+ _addr = of_get_property(phy_node, "reg", NULL);
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+
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+ if (!_addr || (be32_to_cpu(*_addr) >= 0x20)) {
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+ pr_err("%s: invalid phy address\n", phy_node->name);
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+ return -EINVAL;
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+ }
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+ addr = be32_to_cpu(*_addr);
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+ phy_mode = of_get_phy_mode(phy_node);
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+ if (phy_mode < 0) {
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+ dev_err(eth->dev, "incorrect phy-mode %d\n", phy_mode);
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+ return -EINVAL;
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+ }
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+
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+ phydev = of_phy_connect(eth->netdev[mac->id], phy_node,
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+ mtk_phy_link_adjust, 0, phy_mode);
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+ if (IS_ERR(phydev)) {
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+ dev_err(eth->dev, "could not connect to PHY\n");
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+ return PTR_ERR(phydev);
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+ }
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+
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+ dev_info(eth->dev,
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+ "connected mac %d to PHY at %s [uid=%08x, driver=%s]\n",
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+ mac->id, phydev_name(phydev), phydev->phy_id,
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+ phydev->drv->name);
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+
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+ mac->phy_dev = phydev;
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+
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+ return 0;
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+}
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+
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+static int mtk_phy_connect(struct mtk_mac *mac)
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+{
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+ struct mtk_eth *eth = mac->hw;
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+ struct device_node *np;
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+ u32 val, ge_mode;
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+
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+ np = of_parse_phandle(mac->of_node, "phy-handle", 0);
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+ if (!np)
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+ return -ENODEV;
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+
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+ switch (of_get_phy_mode(np)) {
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+ case PHY_INTERFACE_MODE_RGMII:
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+ ge_mode = 0;
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+ break;
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+ case PHY_INTERFACE_MODE_MII:
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+ ge_mode = 1;
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+ break;
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+ case PHY_INTERFACE_MODE_RMII:
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+ ge_mode = 2;
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+ break;
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+ default:
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+ dev_err(eth->dev, "invalid phy_mode\n");
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+ return -1;
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+ }
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+
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+ /* put the gmac into the right mode */
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+ regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val);
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+ val &= ~SYSCFG0_GE_MODE(SYSCFG0_GE_MASK, mac->id);
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+ val |= SYSCFG0_GE_MODE(ge_mode, mac->id);
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+ regmap_write(eth->ethsys, ETHSYS_SYSCFG0, val);
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+
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+ mtk_phy_connect_node(eth, mac, np);
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+ mac->phy_dev->autoneg = AUTONEG_ENABLE;
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+ mac->phy_dev->speed = 0;
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+ mac->phy_dev->duplex = 0;
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+ mac->phy_dev->supported &= PHY_BASIC_FEATURES;
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+ mac->phy_dev->advertising = mac->phy_dev->supported |
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+ ADVERTISED_Autoneg;
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+ phy_start_aneg(mac->phy_dev);
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+
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+ return 0;
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+}
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+
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+static int mtk_mdio_init(struct mtk_eth *eth)
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+{
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+ struct device_node *mii_np;
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+ int err;
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+
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+ mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus");
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+ if (!mii_np) {
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+ dev_err(eth->dev, "no %s child node found", "mdio-bus");
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+ return -ENODEV;
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+ }
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+
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+ if (!of_device_is_available(mii_np)) {
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+ err = 0;
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+ goto err_put_node;
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+ }
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+
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+ eth->mii_bus = mdiobus_alloc();
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+ if (!eth->mii_bus) {
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+ err = -ENOMEM;
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+ goto err_put_node;
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+ }
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+
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+ eth->mii_bus->name = "mdio";
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+ eth->mii_bus->read = mtk_mdio_read;
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+ eth->mii_bus->write = mtk_mdio_write;
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+ eth->mii_bus->priv = eth;
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+ eth->mii_bus->parent = eth->dev;
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+
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+ snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%s", mii_np->name);
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+ err = of_mdiobus_register(eth->mii_bus, mii_np);
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+ if (err)
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+ goto err_free_bus;
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+
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+ return 0;
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+
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+err_free_bus:
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+ kfree(eth->mii_bus);
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+
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+err_put_node:
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+ of_node_put(mii_np);
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+ eth->mii_bus = NULL;
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+ return err;
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+}
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+
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+static void mtk_mdio_cleanup(struct mtk_eth *eth)
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+{
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+ if (!eth->mii_bus)
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+ return;
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+
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+ mdiobus_unregister(eth->mii_bus);
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+ of_node_put(eth->mii_bus->dev.of_node);
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+ kfree(eth->mii_bus);
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+}
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+
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+static inline void mtk_irq_disable(struct mtk_eth *eth, u32 mask)
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+{
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+ u32 val;
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+
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|
|
+ val = mtk_r32(eth, MTK_QDMA_INT_MASK);
|
|
|
|
+ mtk_w32(eth, val & ~mask, MTK_QDMA_INT_MASK);
|
|
|
|
+ /* flush write */
|
|
|
|
+ mtk_r32(eth, MTK_QDMA_INT_MASK);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static inline void mtk_irq_enable(struct mtk_eth *eth, u32 mask)
|
|
|
|
+{
|
|
|
|
+ u32 val;
|
|
|
|
+
|
|
|
|
+ val = mtk_r32(eth, MTK_QDMA_INT_MASK);
|
|
|
|
+ mtk_w32(eth, val | mask, MTK_QDMA_INT_MASK);
|
|
|
|
+ /* flush write */
|
|
|
|
+ mtk_r32(eth, MTK_QDMA_INT_MASK);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_set_mac_address(struct net_device *dev, void *p)
|
|
|
|
+{
|
|
|
|
+ int ret = eth_mac_addr(dev, p);
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ const char *macaddr = dev->dev_addr;
|
|
|
|
+ unsigned long flags;
|
|
|
|
+
|
|
|
|
+ if (ret)
|
|
|
|
+ return ret;
|
|
|
|
+
|
|
|
|
+ spin_lock_irqsave(&mac->hw->page_lock, flags);
|
|
|
|
+ mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1],
|
|
|
|
+ MTK_GDMA_MAC_ADRH(mac->id));
|
|
|
|
+ mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) |
|
|
|
|
+ (macaddr[4] << 8) | macaddr[5],
|
|
|
|
+ MTK_GDMA_MAC_ADRL(mac->id));
|
|
|
|
+ spin_unlock_irqrestore(&mac->hw->page_lock, flags);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+void mtk_stats_update_mac(struct mtk_mac *mac)
|
|
|
|
+{
|
|
|
|
+ struct mtk_hw_stats *hw_stats = mac->hw_stats;
|
|
|
|
+ unsigned int base = MTK_GDM1_TX_GBCNT;
|
|
|
|
+ u64 stats;
|
|
|
|
+
|
|
|
|
+ base += hw_stats->reg_offset;
|
|
|
|
+
|
|
|
|
+ u64_stats_update_begin(&hw_stats->syncp);
|
|
|
|
+
|
|
|
|
+ hw_stats->rx_bytes += mtk_r32(mac->hw, base);
|
|
|
|
+ stats = mtk_r32(mac->hw, base + 0x04);
|
|
|
|
+ if (stats)
|
|
|
|
+ hw_stats->rx_bytes += (stats << 32);
|
|
|
|
+ hw_stats->rx_packets += mtk_r32(mac->hw, base + 0x08);
|
|
|
|
+ hw_stats->rx_overflow += mtk_r32(mac->hw, base + 0x10);
|
|
|
|
+ hw_stats->rx_fcs_errors += mtk_r32(mac->hw, base + 0x14);
|
|
|
|
+ hw_stats->rx_short_errors += mtk_r32(mac->hw, base + 0x18);
|
|
|
|
+ hw_stats->rx_long_errors += mtk_r32(mac->hw, base + 0x1c);
|
|
|
|
+ hw_stats->rx_checksum_errors += mtk_r32(mac->hw, base + 0x20);
|
|
|
|
+ hw_stats->rx_flow_control_packets +=
|
|
|
|
+ mtk_r32(mac->hw, base + 0x24);
|
|
|
|
+ hw_stats->tx_skip += mtk_r32(mac->hw, base + 0x28);
|
|
|
|
+ hw_stats->tx_collisions += mtk_r32(mac->hw, base + 0x2c);
|
|
|
|
+ hw_stats->tx_bytes += mtk_r32(mac->hw, base + 0x30);
|
|
|
|
+ stats = mtk_r32(mac->hw, base + 0x34);
|
|
|
|
+ if (stats)
|
|
|
|
+ hw_stats->tx_bytes += (stats << 32);
|
|
|
|
+ hw_stats->tx_packets += mtk_r32(mac->hw, base + 0x38);
|
|
|
|
+ u64_stats_update_end(&hw_stats->syncp);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_stats_update(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < MTK_MAC_COUNT; i++) {
|
|
|
|
+ if (!eth->mac[i] || !eth->mac[i]->hw_stats)
|
|
|
|
+ continue;
|
|
|
|
+ if (spin_trylock(ð->mac[i]->hw_stats->stats_lock)) {
|
|
|
|
+ mtk_stats_update_mac(eth->mac[i]);
|
|
|
|
+ spin_unlock(ð->mac[i]->hw_stats->stats_lock);
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static struct rtnl_link_stats64 *mtk_get_stats64(struct net_device *dev,
|
|
|
|
+ struct rtnl_link_stats64 *storage)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_hw_stats *hw_stats = mac->hw_stats;
|
|
|
|
+ unsigned int start;
|
|
|
|
+
|
|
|
|
+ if (netif_running(dev) && netif_device_present(dev)) {
|
|
|
|
+ if (spin_trylock(&hw_stats->stats_lock)) {
|
|
|
|
+ mtk_stats_update_mac(mac);
|
|
|
|
+ spin_unlock(&hw_stats->stats_lock);
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ do {
|
|
|
|
+ start = u64_stats_fetch_begin_irq(&hw_stats->syncp);
|
|
|
|
+ storage->rx_packets = hw_stats->rx_packets;
|
|
|
|
+ storage->tx_packets = hw_stats->tx_packets;
|
|
|
|
+ storage->rx_bytes = hw_stats->rx_bytes;
|
|
|
|
+ storage->tx_bytes = hw_stats->tx_bytes;
|
|
|
|
+ storage->collisions = hw_stats->tx_collisions;
|
|
|
|
+ storage->rx_length_errors = hw_stats->rx_short_errors +
|
|
|
|
+ hw_stats->rx_long_errors;
|
|
|
|
+ storage->rx_over_errors = hw_stats->rx_overflow;
|
|
|
|
+ storage->rx_crc_errors = hw_stats->rx_fcs_errors;
|
|
|
|
+ storage->rx_errors = hw_stats->rx_checksum_errors;
|
|
|
|
+ storage->tx_aborted_errors = hw_stats->tx_skip;
|
|
|
|
+ } while (u64_stats_fetch_retry_irq(&hw_stats->syncp, start));
|
|
|
|
+
|
|
|
|
+ storage->tx_errors = dev->stats.tx_errors;
|
|
|
|
+ storage->rx_dropped = dev->stats.rx_dropped;
|
|
|
|
+ storage->tx_dropped = dev->stats.tx_dropped;
|
|
|
|
+
|
|
|
|
+ return storage;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static inline int mtk_max_frag_size(int mtu)
|
|
|
|
+{
|
|
|
|
+ /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */
|
|
|
|
+ if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH)
|
|
|
|
+ mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN;
|
|
|
|
+
|
|
|
|
+ return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) +
|
|
|
|
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static inline int mtk_max_buf_size(int frag_size)
|
|
|
|
+{
|
|
|
|
+ int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN -
|
|
|
|
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
|
|
|
|
+
|
|
|
|
+ WARN_ON(buf_size < MTK_MAX_RX_LENGTH);
|
|
|
|
+
|
|
|
|
+ return buf_size;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static inline void mtk_rx_get_desc(struct mtk_rx_dma *rxd,
|
|
|
|
+ struct mtk_rx_dma *dma_rxd)
|
|
|
|
+{
|
|
|
|
+ rxd->rxd1 = READ_ONCE(dma_rxd->rxd1);
|
|
|
|
+ rxd->rxd2 = READ_ONCE(dma_rxd->rxd2);
|
|
|
|
+ rxd->rxd3 = READ_ONCE(dma_rxd->rxd3);
|
|
|
|
+ rxd->rxd4 = READ_ONCE(dma_rxd->rxd4);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+/* the qdma core needs scratch memory to be setup */
|
|
|
|
+static int mtk_init_fq_dma(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ unsigned int phy_ring_head, phy_ring_tail;
|
|
|
|
+ int cnt = MTK_DMA_SIZE;
|
|
|
|
+ dma_addr_t dma_addr;
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ eth->scratch_ring = dma_alloc_coherent(eth->dev,
|
|
|
|
+ cnt * sizeof(struct mtk_tx_dma),
|
|
|
|
+ &phy_ring_head,
|
|
|
|
+ GFP_ATOMIC | __GFP_ZERO);
|
|
|
|
+ if (unlikely(!eth->scratch_ring))
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ eth->scratch_head = kcalloc(cnt, MTK_QDMA_PAGE_SIZE,
|
|
|
|
+ GFP_KERNEL);
|
|
|
|
+ dma_addr = dma_map_single(eth->dev,
|
|
|
|
+ eth->scratch_head, cnt * MTK_QDMA_PAGE_SIZE,
|
|
|
|
+ DMA_FROM_DEVICE);
|
|
|
|
+ if (unlikely(dma_mapping_error(eth->dev, dma_addr)))
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ memset(eth->scratch_ring, 0x0, sizeof(struct mtk_tx_dma) * cnt);
|
|
|
|
+ phy_ring_tail = phy_ring_head +
|
|
|
|
+ (sizeof(struct mtk_tx_dma) * (cnt - 1));
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < cnt; i++) {
|
|
|
|
+ eth->scratch_ring[i].txd1 =
|
|
|
|
+ (dma_addr + (i * MTK_QDMA_PAGE_SIZE));
|
|
|
|
+ if (i < cnt - 1)
|
|
|
|
+ eth->scratch_ring[i].txd2 = (phy_ring_head +
|
|
|
|
+ ((i + 1) * sizeof(struct mtk_tx_dma)));
|
|
|
|
+ eth->scratch_ring[i].txd3 = TX_DMA_SDL(MTK_QDMA_PAGE_SIZE);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ mtk_w32(eth, phy_ring_head, MTK_QDMA_FQ_HEAD);
|
|
|
|
+ mtk_w32(eth, phy_ring_tail, MTK_QDMA_FQ_TAIL);
|
|
|
|
+ mtk_w32(eth, (cnt << 16) | cnt, MTK_QDMA_FQ_CNT);
|
|
|
|
+ mtk_w32(eth, MTK_QDMA_PAGE_SIZE << 16, MTK_QDMA_FQ_BLEN);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static inline void *mtk_qdma_phys_to_virt(struct mtk_tx_ring *ring, u32 desc)
|
|
|
|
+{
|
|
|
|
+ void *ret = ring->dma;
|
|
|
|
+
|
|
|
|
+ return ret + (desc - ring->phys);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static inline struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring,
|
|
|
|
+ struct mtk_tx_dma *txd)
|
|
|
|
+{
|
|
|
|
+ int idx = txd - ring->dma;
|
|
|
|
+
|
|
|
|
+ return &ring->buf[idx];
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_tx_unmap(struct device *dev, struct mtk_tx_buf *tx_buf)
|
|
|
|
+{
|
|
|
|
+ if (tx_buf->flags & MTK_TX_FLAGS_SINGLE0) {
|
|
|
|
+ dma_unmap_single(dev,
|
|
|
|
+ dma_unmap_addr(tx_buf, dma_addr0),
|
|
|
|
+ dma_unmap_len(tx_buf, dma_len0),
|
|
|
|
+ DMA_TO_DEVICE);
|
|
|
|
+ } else if (tx_buf->flags & MTK_TX_FLAGS_PAGE0) {
|
|
|
|
+ dma_unmap_page(dev,
|
|
|
|
+ dma_unmap_addr(tx_buf, dma_addr0),
|
|
|
|
+ dma_unmap_len(tx_buf, dma_len0),
|
|
|
|
+ DMA_TO_DEVICE);
|
|
|
|
+ }
|
|
|
|
+ tx_buf->flags = 0;
|
|
|
|
+ if (tx_buf->skb &&
|
|
|
|
+ (tx_buf->skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC))
|
|
|
|
+ dev_kfree_skb_any(tx_buf->skb);
|
|
|
|
+ tx_buf->skb = NULL;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev,
|
|
|
|
+ int tx_num, struct mtk_tx_ring *ring, bool gso)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+ struct mtk_tx_dma *itxd, *txd;
|
|
|
|
+ struct mtk_tx_buf *tx_buf;
|
|
|
|
+ unsigned long flags;
|
|
|
|
+ dma_addr_t mapped_addr;
|
|
|
|
+ unsigned int nr_frags;
|
|
|
|
+ int i, n_desc = 1;
|
|
|
|
+ u32 txd4 = 0;
|
|
|
|
+
|
|
|
|
+ itxd = ring->next_free;
|
|
|
|
+ if (itxd == ring->last_free)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ /* set the forward port */
|
|
|
|
+ txd4 |= (mac->id + 1) << TX_DMA_FPORT_SHIFT;
|
|
|
|
+
|
|
|
|
+ tx_buf = mtk_desc_to_tx_buf(ring, itxd);
|
|
|
|
+ memset(tx_buf, 0, sizeof(*tx_buf));
|
|
|
|
+
|
|
|
|
+ if (gso)
|
|
|
|
+ txd4 |= TX_DMA_TSO;
|
|
|
|
+
|
|
|
|
+ /* TX Checksum offload */
|
|
|
|
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
|
|
|
|
+ txd4 |= TX_DMA_CHKSUM;
|
|
|
|
+
|
|
|
|
+ /* VLAN header offload */
|
|
|
|
+ if (skb_vlan_tag_present(skb))
|
|
|
|
+ txd4 |= TX_DMA_INS_VLAN | skb_vlan_tag_get(skb);
|
|
|
|
+
|
|
|
|
+ mapped_addr = dma_map_single(&dev->dev, skb->data,
|
|
|
|
+ skb_headlen(skb), DMA_TO_DEVICE);
|
|
|
|
+ if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ /* normally we can rely on the stack not calling this more than once,
|
|
|
|
+ * however we have 2 queues running ont he same ring so we need to lock
|
|
|
|
+ * the ring access
|
|
|
|
+ */
|
|
|
|
+ spin_lock_irqsave(ð->page_lock, flags);
|
|
|
|
+ WRITE_ONCE(itxd->txd1, mapped_addr);
|
|
|
|
+ tx_buf->flags |= MTK_TX_FLAGS_SINGLE0;
|
|
|
|
+ dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr);
|
|
|
|
+ dma_unmap_len_set(tx_buf, dma_len0, skb_headlen(skb));
|
|
|
|
+
|
|
|
|
+ /* TX SG offload */
|
|
|
|
+ txd = itxd;
|
|
|
|
+ nr_frags = skb_shinfo(skb)->nr_frags;
|
|
|
|
+ for (i = 0; i < nr_frags; i++) {
|
|
|
|
+ struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
|
|
|
|
+ unsigned int offset = 0;
|
|
|
|
+ int frag_size = skb_frag_size(frag);
|
|
|
|
+
|
|
|
|
+ while (frag_size) {
|
|
|
|
+ bool last_frag = false;
|
|
|
|
+ unsigned int frag_map_size;
|
|
|
|
+
|
|
|
|
+ txd = mtk_qdma_phys_to_virt(ring, txd->txd2);
|
|
|
|
+ if (txd == ring->last_free)
|
|
|
|
+ goto err_dma;
|
|
|
|
+
|
|
|
|
+ n_desc++;
|
|
|
|
+ frag_map_size = min(frag_size, MTK_TX_DMA_BUF_LEN);
|
|
|
|
+ mapped_addr = skb_frag_dma_map(&dev->dev, frag, offset,
|
|
|
|
+ frag_map_size,
|
|
|
|
+ DMA_TO_DEVICE);
|
|
|
|
+ if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
|
|
|
|
+ goto err_dma;
|
|
|
|
+
|
|
|
|
+ if (i == nr_frags - 1 &&
|
|
|
|
+ (frag_size - frag_map_size) == 0)
|
|
|
|
+ last_frag = true;
|
|
|
|
+
|
|
|
|
+ WRITE_ONCE(txd->txd1, mapped_addr);
|
|
|
|
+ WRITE_ONCE(txd->txd3, (TX_DMA_SWC |
|
|
|
|
+ TX_DMA_PLEN0(frag_map_size) |
|
|
|
|
+ last_frag * TX_DMA_LS0) |
|
|
|
|
+ mac->id);
|
|
|
|
+ WRITE_ONCE(txd->txd4, 0);
|
|
|
|
+
|
|
|
|
+ tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC;
|
|
|
|
+ tx_buf = mtk_desc_to_tx_buf(ring, txd);
|
|
|
|
+ memset(tx_buf, 0, sizeof(*tx_buf));
|
|
|
|
+
|
|
|
|
+ tx_buf->flags |= MTK_TX_FLAGS_PAGE0;
|
|
|
|
+ dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr);
|
|
|
|
+ dma_unmap_len_set(tx_buf, dma_len0, frag_map_size);
|
|
|
|
+ frag_size -= frag_map_size;
|
|
|
|
+ offset += frag_map_size;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* store skb to cleanup */
|
|
|
|
+ tx_buf->skb = skb;
|
|
|
|
+
|
|
|
|
+ WRITE_ONCE(itxd->txd4, txd4);
|
|
|
|
+ WRITE_ONCE(itxd->txd3, (TX_DMA_SWC | TX_DMA_PLEN0(skb_headlen(skb)) |
|
|
|
|
+ (!nr_frags * TX_DMA_LS0)));
|
|
|
|
+
|
|
|
|
+ spin_unlock_irqrestore(ð->page_lock, flags);
|
|
|
|
+
|
|
|
|
+ netdev_sent_queue(dev, skb->len);
|
|
|
|
+ skb_tx_timestamp(skb);
|
|
|
|
+
|
|
|
|
+ ring->next_free = mtk_qdma_phys_to_virt(ring, txd->txd2);
|
|
|
|
+ atomic_sub(n_desc, &ring->free_count);
|
|
|
|
+
|
|
|
|
+ /* make sure that all changes to the dma ring are flushed before we
|
|
|
|
+ * continue
|
|
|
|
+ */
|
|
|
|
+ wmb();
|
|
|
|
+
|
|
|
|
+ if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || !skb->xmit_more)
|
|
|
|
+ mtk_w32(eth, txd->txd2, MTK_QTX_CTX_PTR);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+
|
|
|
|
+err_dma:
|
|
|
|
+ do {
|
|
|
|
+ tx_buf = mtk_desc_to_tx_buf(ring, txd);
|
|
|
|
+
|
|
|
|
+ /* unmap dma */
|
|
|
|
+ mtk_tx_unmap(&dev->dev, tx_buf);
|
|
|
|
+
|
|
|
|
+ itxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU;
|
|
|
|
+ itxd = mtk_qdma_phys_to_virt(ring, itxd->txd2);
|
|
|
|
+ } while (itxd != txd);
|
|
|
|
+
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static inline int mtk_cal_txd_req(struct sk_buff *skb)
|
|
|
|
+{
|
|
|
|
+ int i, nfrags;
|
|
|
|
+ struct skb_frag_struct *frag;
|
|
|
|
+
|
|
|
|
+ nfrags = 1;
|
|
|
|
+ if (skb_is_gso(skb)) {
|
|
|
|
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
|
|
|
|
+ frag = &skb_shinfo(skb)->frags[i];
|
|
|
|
+ nfrags += DIV_ROUND_UP(frag->size, MTK_TX_DMA_BUF_LEN);
|
|
|
|
+ }
|
|
|
|
+ } else {
|
|
|
|
+ nfrags += skb_shinfo(skb)->nr_frags;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return DIV_ROUND_UP(nfrags, 2);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+ struct mtk_tx_ring *ring = ð->tx_ring;
|
|
|
|
+ struct net_device_stats *stats = &dev->stats;
|
|
|
|
+ bool gso = false;
|
|
|
|
+ int tx_num;
|
|
|
|
+
|
|
|
|
+ tx_num = mtk_cal_txd_req(skb);
|
|
|
|
+ if (unlikely(atomic_read(&ring->free_count) <= tx_num)) {
|
|
|
|
+ netif_stop_queue(dev);
|
|
|
|
+ netif_err(eth, tx_queued, dev,
|
|
|
|
+ "Tx Ring full when queue awake!\n");
|
|
|
|
+ return NETDEV_TX_BUSY;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* TSO: fill MSS info in tcp checksum field */
|
|
|
|
+ if (skb_is_gso(skb)) {
|
|
|
|
+ if (skb_cow_head(skb, 0)) {
|
|
|
|
+ netif_warn(eth, tx_err, dev,
|
|
|
|
+ "GSO expand head fail.\n");
|
|
|
|
+ goto drop;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (skb_shinfo(skb)->gso_type &
|
|
|
|
+ (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
|
|
|
|
+ gso = true;
|
|
|
|
+ tcp_hdr(skb)->check = htons(skb_shinfo(skb)->gso_size);
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (mtk_tx_map(skb, dev, tx_num, ring, gso) < 0)
|
|
|
|
+ goto drop;
|
|
|
|
+
|
|
|
|
+ if (unlikely(atomic_read(&ring->free_count) <= ring->thresh)) {
|
|
|
|
+ netif_stop_queue(dev);
|
|
|
|
+ if (unlikely(atomic_read(&ring->free_count) >
|
|
|
|
+ ring->thresh))
|
|
|
|
+ netif_wake_queue(dev);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return NETDEV_TX_OK;
|
|
|
|
+
|
|
|
|
+drop:
|
|
|
|
+ stats->tx_dropped++;
|
|
|
|
+ dev_kfree_skb(skb);
|
|
|
|
+ return NETDEV_TX_OK;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_poll_rx(struct napi_struct *napi, int budget,
|
|
|
|
+ struct mtk_eth *eth, u32 rx_intr)
|
|
|
|
+{
|
|
|
|
+ struct mtk_rx_ring *ring = ð->rx_ring;
|
|
|
|
+ int idx = ring->calc_idx;
|
|
|
|
+ struct sk_buff *skb;
|
|
|
|
+ u8 *data, *new_data;
|
|
|
|
+ struct mtk_rx_dma *rxd, trxd;
|
|
|
|
+ int done = 0;
|
|
|
|
+
|
|
|
|
+ while (done < budget) {
|
|
|
|
+ struct net_device *netdev;
|
|
|
|
+ unsigned int pktlen;
|
|
|
|
+ dma_addr_t dma_addr;
|
|
|
|
+ int mac = 0;
|
|
|
|
+
|
|
|
|
+ idx = NEXT_RX_DESP_IDX(idx);
|
|
|
|
+ rxd = &ring->dma[idx];
|
|
|
|
+ data = ring->data[idx];
|
|
|
|
+
|
|
|
|
+ mtk_rx_get_desc(&trxd, rxd);
|
|
|
|
+ if (!(trxd.rxd2 & RX_DMA_DONE))
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ /* find out which mac the packet come from. values start at 1 */
|
|
|
|
+ mac = (trxd.rxd4 >> RX_DMA_FPORT_SHIFT) &
|
|
|
|
+ RX_DMA_FPORT_MASK;
|
|
|
|
+ mac--;
|
|
|
|
+
|
|
|
|
+ netdev = eth->netdev[mac];
|
|
|
|
+
|
|
|
|
+ /* alloc new buffer */
|
|
|
|
+ new_data = napi_alloc_frag(ring->frag_size);
|
|
|
|
+ if (unlikely(!new_data)) {
|
|
|
|
+ netdev->stats.rx_dropped++;
|
|
|
|
+ goto release_desc;
|
|
|
|
+ }
|
|
|
|
+ dma_addr = dma_map_single(ð->netdev[mac]->dev,
|
|
|
|
+ new_data + NET_SKB_PAD,
|
|
|
|
+ ring->buf_size,
|
|
|
|
+ DMA_FROM_DEVICE);
|
|
|
|
+ if (unlikely(dma_mapping_error(&netdev->dev, dma_addr))) {
|
|
|
|
+ skb_free_frag(new_data);
|
|
|
|
+ goto release_desc;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* receive data */
|
|
|
|
+ skb = build_skb(data, ring->frag_size);
|
|
|
|
+ if (unlikely(!skb)) {
|
|
|
|
+ put_page(virt_to_head_page(new_data));
|
|
|
|
+ goto release_desc;
|
|
|
|
+ }
|
|
|
|
+ skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
|
|
|
|
+
|
|
|
|
+ dma_unmap_single(&netdev->dev, trxd.rxd1,
|
|
|
|
+ ring->buf_size, DMA_FROM_DEVICE);
|
|
|
|
+ pktlen = RX_DMA_GET_PLEN0(trxd.rxd2);
|
|
|
|
+ skb->dev = netdev;
|
|
|
|
+ skb_put(skb, pktlen);
|
|
|
|
+ if (trxd.rxd4 & RX_DMA_L4_VALID)
|
|
|
|
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
|
|
+ else
|
|
|
|
+ skb_checksum_none_assert(skb);
|
|
|
|
+ skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
+
|
|
|
|
+ if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
|
|
|
|
+ RX_DMA_VID(trxd.rxd3))
|
|
|
|
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
|
|
|
|
+ RX_DMA_VID(trxd.rxd3));
|
|
|
|
+ napi_gro_receive(napi, skb);
|
|
|
|
+
|
|
|
|
+ ring->data[idx] = new_data;
|
|
|
|
+ rxd->rxd1 = (unsigned int)dma_addr;
|
|
|
|
+
|
|
|
|
+release_desc:
|
|
|
|
+ rxd->rxd2 = RX_DMA_PLEN0(ring->buf_size);
|
|
|
|
+
|
|
|
|
+ ring->calc_idx = idx;
|
|
|
|
+ /* make sure that all changes to the dma ring are flushed before
|
|
|
|
+ * we continue
|
|
|
|
+ */
|
|
|
|
+ wmb();
|
|
|
|
+ mtk_w32(eth, ring->calc_idx, MTK_QRX_CRX_IDX0);
|
|
|
|
+ done++;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (done < budget)
|
|
|
|
+ mtk_w32(eth, rx_intr, MTK_QMTK_INT_STATUS);
|
|
|
|
+
|
|
|
|
+ return done;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
|
|
|
|
+{
|
|
|
|
+ struct mtk_tx_ring *ring = ð->tx_ring;
|
|
|
|
+ struct mtk_tx_dma *desc;
|
|
|
|
+ struct sk_buff *skb;
|
|
|
|
+ struct mtk_tx_buf *tx_buf;
|
|
|
|
+ int total = 0, done[MTK_MAX_DEVS];
|
|
|
|
+ unsigned int bytes[MTK_MAX_DEVS];
|
|
|
|
+ u32 cpu, dma;
|
|
|
|
+ static int condition;
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ memset(done, 0, sizeof(done));
|
|
|
|
+ memset(bytes, 0, sizeof(bytes));
|
|
|
|
+
|
|
|
|
+ cpu = mtk_r32(eth, MTK_QTX_CRX_PTR);
|
|
|
|
+ dma = mtk_r32(eth, MTK_QTX_DRX_PTR);
|
|
|
|
+
|
|
|
|
+ desc = mtk_qdma_phys_to_virt(ring, cpu);
|
|
|
|
+
|
|
|
|
+ while ((cpu != dma) && budget) {
|
|
|
|
+ u32 next_cpu = desc->txd2;
|
|
|
|
+ int mac;
|
|
|
|
+
|
|
|
|
+ desc = mtk_qdma_phys_to_virt(ring, desc->txd2);
|
|
|
|
+ if ((desc->txd3 & TX_DMA_OWNER_CPU) == 0)
|
|
|
|
+ break;
|
|
|
|
+
|
|
|
|
+ mac = (desc->txd4 >> TX_DMA_FPORT_SHIFT) &
|
|
|
|
+ TX_DMA_FPORT_MASK;
|
|
|
|
+ mac--;
|
|
|
|
+
|
|
|
|
+ tx_buf = mtk_desc_to_tx_buf(ring, desc);
|
|
|
|
+ skb = tx_buf->skb;
|
|
|
|
+ if (!skb) {
|
|
|
|
+ condition = 1;
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC) {
|
|
|
|
+ bytes[mac] += skb->len;
|
|
|
|
+ done[mac]++;
|
|
|
|
+ budget--;
|
|
|
|
+ }
|
|
|
|
+ mtk_tx_unmap(eth->dev, tx_buf);
|
|
|
|
+
|
|
|
|
+ ring->last_free->txd2 = next_cpu;
|
|
|
|
+ ring->last_free = desc;
|
|
|
|
+ atomic_inc(&ring->free_count);
|
|
|
|
+
|
|
|
|
+ cpu = next_cpu;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ mtk_w32(eth, cpu, MTK_QTX_CRX_PTR);
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < MTK_MAC_COUNT; i++) {
|
|
|
|
+ if (!eth->netdev[i] || !done[i])
|
|
|
|
+ continue;
|
|
|
|
+ netdev_completed_queue(eth->netdev[i], done[i], bytes[i]);
|
|
|
|
+ total += done[i];
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* read hw index again make sure no new tx packet */
|
|
|
|
+ if (cpu != dma || cpu != mtk_r32(eth, MTK_QTX_DRX_PTR))
|
|
|
|
+ *tx_again = true;
|
|
|
|
+ else
|
|
|
|
+ mtk_w32(eth, MTK_TX_DONE_INT, MTK_QMTK_INT_STATUS);
|
|
|
|
+
|
|
|
|
+ if (!total)
|
|
|
|
+ return 0;
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < MTK_MAC_COUNT; i++) {
|
|
|
|
+ if (!eth->netdev[i] ||
|
|
|
|
+ unlikely(!netif_queue_stopped(eth->netdev[i])))
|
|
|
|
+ continue;
|
|
|
|
+ if (atomic_read(&ring->free_count) > ring->thresh)
|
|
|
|
+ netif_wake_queue(eth->netdev[i]);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return total;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_poll(struct napi_struct *napi, int budget)
|
|
|
|
+{
|
|
|
|
+ struct mtk_eth *eth = container_of(napi, struct mtk_eth, rx_napi);
|
|
|
|
+ u32 status, status2, mask, tx_intr, rx_intr, status_intr;
|
|
|
|
+ int tx_done, rx_done;
|
|
|
|
+ bool tx_again = false;
|
|
|
|
+
|
|
|
|
+ status = mtk_r32(eth, MTK_QMTK_INT_STATUS);
|
|
|
|
+ status2 = mtk_r32(eth, MTK_INT_STATUS2);
|
|
|
|
+ tx_intr = MTK_TX_DONE_INT;
|
|
|
|
+ rx_intr = MTK_RX_DONE_INT;
|
|
|
|
+ status_intr = (MTK_GDM1_AF | MTK_GDM2_AF);
|
|
|
|
+ tx_done = 0;
|
|
|
|
+ rx_done = 0;
|
|
|
|
+ tx_again = 0;
|
|
|
|
+
|
|
|
|
+ if (status & tx_intr)
|
|
|
|
+ tx_done = mtk_poll_tx(eth, budget, &tx_again);
|
|
|
|
+
|
|
|
|
+ if (status & rx_intr)
|
|
|
|
+ rx_done = mtk_poll_rx(napi, budget, eth, rx_intr);
|
|
|
|
+
|
|
|
|
+ if (unlikely(status2 & status_intr)) {
|
|
|
|
+ mtk_stats_update(eth);
|
|
|
|
+ mtk_w32(eth, status_intr, MTK_INT_STATUS2);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (unlikely(netif_msg_intr(eth))) {
|
|
|
|
+ mask = mtk_r32(eth, MTK_QDMA_INT_MASK);
|
|
|
|
+ netdev_info(eth->netdev[0],
|
|
|
|
+ "done tx %d, rx %d, intr 0x%08x/0x%x\n",
|
|
|
|
+ tx_done, rx_done, status, mask);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (tx_again || rx_done == budget)
|
|
|
|
+ return budget;
|
|
|
|
+
|
|
|
|
+ status = mtk_r32(eth, MTK_QMTK_INT_STATUS);
|
|
|
|
+ if (status & (tx_intr | rx_intr))
|
|
|
|
+ return budget;
|
|
|
|
+
|
|
|
|
+ napi_complete(napi);
|
|
|
|
+ mtk_irq_enable(eth, tx_intr | rx_intr);
|
|
|
|
+
|
|
|
|
+ return rx_done;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_tx_alloc(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ struct mtk_tx_ring *ring = ð->tx_ring;
|
|
|
|
+ int i, sz = sizeof(*ring->dma);
|
|
|
|
+
|
|
|
|
+ ring->buf = kcalloc(MTK_DMA_SIZE, sizeof(*ring->buf),
|
|
|
|
+ GFP_KERNEL);
|
|
|
|
+ if (!ring->buf)
|
|
|
|
+ goto no_tx_mem;
|
|
|
|
+
|
|
|
|
+ ring->dma = dma_alloc_coherent(eth->dev,
|
|
|
|
+ MTK_DMA_SIZE * sz,
|
|
|
|
+ &ring->phys,
|
|
|
|
+ GFP_ATOMIC | __GFP_ZERO);
|
|
|
|
+ if (!ring->dma)
|
|
|
|
+ goto no_tx_mem;
|
|
|
|
+
|
|
|
|
+ memset(ring->dma, 0, MTK_DMA_SIZE * sz);
|
|
|
|
+ for (i = 0; i < MTK_DMA_SIZE; i++) {
|
|
|
|
+ int next = (i + 1) % MTK_DMA_SIZE;
|
|
|
|
+ u32 next_ptr = ring->phys + next * sz;
|
|
|
|
+
|
|
|
|
+ ring->dma[i].txd2 = next_ptr;
|
|
|
|
+ ring->dma[i].txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ atomic_set(&ring->free_count, MTK_DMA_SIZE - 2);
|
|
|
|
+ ring->next_free = &ring->dma[0];
|
|
|
|
+ ring->last_free = &ring->dma[MTK_DMA_SIZE - 2];
|
|
|
|
+ ring->thresh = max((unsigned long)MTK_DMA_SIZE >> 2,
|
|
|
|
+ MAX_SKB_FRAGS);
|
|
|
|
+
|
|
|
|
+ /* make sure that all changes to the dma ring are flushed before we
|
|
|
|
+ * continue
|
|
|
|
+ */
|
|
|
|
+ wmb();
|
|
|
|
+
|
|
|
|
+ mtk_w32(eth, ring->phys, MTK_QTX_CTX_PTR);
|
|
|
|
+ mtk_w32(eth, ring->phys, MTK_QTX_DTX_PTR);
|
|
|
|
+ mtk_w32(eth,
|
|
|
|
+ ring->phys + ((MTK_DMA_SIZE - 1) * sz),
|
|
|
|
+ MTK_QTX_CRX_PTR);
|
|
|
|
+ mtk_w32(eth,
|
|
|
|
+ ring->phys + ((MTK_DMA_SIZE - 1) * sz),
|
|
|
|
+ MTK_QTX_DRX_PTR);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+
|
|
|
|
+no_tx_mem:
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_tx_clean(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ struct mtk_tx_ring *ring = ð->tx_ring;
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ if (ring->buf) {
|
|
|
|
+ for (i = 0; i < MTK_DMA_SIZE; i++)
|
|
|
|
+ mtk_tx_unmap(eth->dev, &ring->buf[i]);
|
|
|
|
+ kfree(ring->buf);
|
|
|
|
+ ring->buf = NULL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (ring->dma) {
|
|
|
|
+ dma_free_coherent(eth->dev,
|
|
|
|
+ MTK_DMA_SIZE * sizeof(*ring->dma),
|
|
|
|
+ ring->dma,
|
|
|
|
+ ring->phys);
|
|
|
|
+ ring->dma = NULL;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_rx_alloc(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ struct mtk_rx_ring *ring = ð->rx_ring;
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ ring->frag_size = mtk_max_frag_size(ETH_DATA_LEN);
|
|
|
|
+ ring->buf_size = mtk_max_buf_size(ring->frag_size);
|
|
|
|
+ ring->data = kcalloc(MTK_DMA_SIZE, sizeof(*ring->data),
|
|
|
|
+ GFP_KERNEL);
|
|
|
|
+ if (!ring->data)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < MTK_DMA_SIZE; i++) {
|
|
|
|
+ ring->data[i] = netdev_alloc_frag(ring->frag_size);
|
|
|
|
+ if (!ring->data[i])
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ ring->dma = dma_alloc_coherent(eth->dev,
|
|
|
|
+ MTK_DMA_SIZE * sizeof(*ring->dma),
|
|
|
|
+ &ring->phys,
|
|
|
|
+ GFP_ATOMIC | __GFP_ZERO);
|
|
|
|
+ if (!ring->dma)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < MTK_DMA_SIZE; i++) {
|
|
|
|
+ dma_addr_t dma_addr = dma_map_single(eth->dev,
|
|
|
|
+ ring->data[i] + NET_SKB_PAD,
|
|
|
|
+ ring->buf_size,
|
|
|
|
+ DMA_FROM_DEVICE);
|
|
|
|
+ if (unlikely(dma_mapping_error(eth->dev, dma_addr)))
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+ ring->dma[i].rxd1 = (unsigned int)dma_addr;
|
|
|
|
+
|
|
|
|
+ ring->dma[i].rxd2 = RX_DMA_PLEN0(ring->buf_size);
|
|
|
|
+ }
|
|
|
|
+ ring->calc_idx = MTK_DMA_SIZE - 1;
|
|
|
|
+ /* make sure that all changes to the dma ring are flushed before we
|
|
|
|
+ * continue
|
|
|
|
+ */
|
|
|
|
+ wmb();
|
|
|
|
+
|
|
|
|
+ mtk_w32(eth, eth->rx_ring.phys, MTK_QRX_BASE_PTR0);
|
|
|
|
+ mtk_w32(eth, MTK_DMA_SIZE, MTK_QRX_MAX_CNT0);
|
|
|
|
+ mtk_w32(eth, eth->rx_ring.calc_idx, MTK_QRX_CRX_IDX0);
|
|
|
|
+ mtk_w32(eth, MTK_PST_DRX_IDX0, MTK_QDMA_RST_IDX);
|
|
|
|
+ mtk_w32(eth, (QDMA_RES_THRES << 8) | QDMA_RES_THRES, MTK_QTX_CFG(0));
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_rx_clean(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ struct mtk_rx_ring *ring = ð->rx_ring;
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ if (ring->data && ring->dma) {
|
|
|
|
+ for (i = 0; i < MTK_DMA_SIZE; i++) {
|
|
|
|
+ if (!ring->data[i])
|
|
|
|
+ continue;
|
|
|
|
+ if (!ring->dma[i].rxd1)
|
|
|
|
+ continue;
|
|
|
|
+ dma_unmap_single(eth->dev,
|
|
|
|
+ ring->dma[i].rxd1,
|
|
|
|
+ ring->buf_size,
|
|
|
|
+ DMA_FROM_DEVICE);
|
|
|
|
+ skb_free_frag(ring->data[i]);
|
|
|
|
+ }
|
|
|
|
+ kfree(ring->data);
|
|
|
|
+ ring->data = NULL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (ring->dma) {
|
|
|
|
+ dma_free_coherent(eth->dev,
|
|
|
|
+ MTK_DMA_SIZE * sizeof(*ring->dma),
|
|
|
|
+ ring->dma,
|
|
|
|
+ ring->phys);
|
|
|
|
+ ring->dma = NULL;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+/* wait for DMA to finish whatever it is doing before we start using it again */
|
|
|
|
+static int mtk_dma_busy_wait(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ unsigned long t_start = jiffies;
|
|
|
|
+
|
|
|
|
+ while (1) {
|
|
|
|
+ if (!(mtk_r32(eth, MTK_QDMA_GLO_CFG) &
|
|
|
|
+ (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY)))
|
|
|
|
+ return 0;
|
|
|
|
+ if (time_after(jiffies, t_start + MTK_DMA_BUSY_TIMEOUT))
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ dev_err(eth->dev, "DMA init timeout\n");
|
|
|
|
+ return -1;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_dma_init(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ int err;
|
|
|
|
+
|
|
|
|
+ if (mtk_dma_busy_wait(eth))
|
|
|
|
+ return -EBUSY;
|
|
|
|
+
|
|
|
|
+ /* QDMA needs scratch memory for internal reordering of the
|
|
|
|
+ * descriptors
|
|
|
|
+ */
|
|
|
|
+ err = mtk_init_fq_dma(eth);
|
|
|
|
+ if (err)
|
|
|
|
+ return err;
|
|
|
|
+
|
|
|
|
+ err = mtk_tx_alloc(eth);
|
|
|
|
+ if (err)
|
|
|
|
+ return err;
|
|
|
|
+
|
|
|
|
+ err = mtk_rx_alloc(eth);
|
|
|
|
+ if (err)
|
|
|
|
+ return err;
|
|
|
|
+
|
|
|
|
+ /* Enable random early drop and set drop threshold automatically */
|
|
|
|
+ mtk_w32(eth, FC_THRES_DROP_MODE | FC_THRES_DROP_EN | FC_THRES_MIN,
|
|
|
|
+ MTK_QDMA_FC_THRES);
|
|
|
|
+ mtk_w32(eth, 0x0, MTK_QDMA_HRED2);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_dma_free(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < MTK_MAC_COUNT; i++)
|
|
|
|
+ if (eth->netdev[i])
|
|
|
|
+ netdev_reset_queue(eth->netdev[i]);
|
|
|
|
+ mtk_tx_clean(eth);
|
|
|
|
+ mtk_rx_clean(eth);
|
|
|
|
+ kfree(eth->scratch_head);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_tx_timeout(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+
|
|
|
|
+ eth->netdev[mac->id]->stats.tx_errors++;
|
|
|
|
+ netif_err(eth, tx_err, dev,
|
|
|
|
+ "transmit timed out\n");
|
|
|
|
+ schedule_work(&mac->pending_work);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static irqreturn_t mtk_handle_irq(int irq, void *_eth)
|
|
|
|
+{
|
|
|
|
+ struct mtk_eth *eth = _eth;
|
|
|
|
+ u32 status;
|
|
|
|
+
|
|
|
|
+ status = mtk_r32(eth, MTK_QMTK_INT_STATUS);
|
|
|
|
+ if (unlikely(!status))
|
|
|
|
+ return IRQ_NONE;
|
|
|
|
+
|
|
|
|
+ if (likely(status & (MTK_RX_DONE_INT | MTK_TX_DONE_INT))) {
|
|
|
|
+ if (likely(napi_schedule_prep(ð->rx_napi)))
|
|
|
|
+ __napi_schedule(ð->rx_napi);
|
|
|
|
+ } else {
|
|
|
|
+ mtk_w32(eth, status, MTK_QMTK_INT_STATUS);
|
|
|
|
+ }
|
|
|
|
+ mtk_irq_disable(eth, (MTK_RX_DONE_INT | MTK_TX_DONE_INT));
|
|
|
|
+
|
|
|
|
+ return IRQ_HANDLED;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
|
|
+static void mtk_poll_controller(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+ u32 int_mask = MTK_TX_DONE_INT | MTK_RX_DONE_INT;
|
|
|
|
+
|
|
|
|
+ mtk_irq_disable(eth, int_mask);
|
|
|
|
+ mtk_handle_irq(dev->irq, dev);
|
|
|
|
+ mtk_irq_enable(eth, int_mask);
|
|
|
|
+}
|
|
|
|
+#endif
|
|
|
|
+
|
|
|
|
+static int mtk_start_dma(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ int err;
|
|
|
|
+
|
|
|
|
+ err = mtk_dma_init(eth);
|
|
|
|
+ if (err) {
|
|
|
|
+ mtk_dma_free(eth);
|
|
|
|
+ return err;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ mtk_w32(eth,
|
|
|
|
+ MTK_TX_WB_DDONE | MTK_RX_DMA_EN | MTK_TX_DMA_EN |
|
|
|
|
+ MTK_RX_2B_OFFSET | MTK_DMA_SIZE_16DWORDS |
|
|
|
|
+ MTK_RX_BT_32DWORDS,
|
|
|
|
+ MTK_QDMA_GLO_CFG);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_open(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+
|
|
|
|
+ /* we run 2 netdevs on the same dma ring so we only bring it up once */
|
|
|
|
+ if (!atomic_read(ð->dma_refcnt)) {
|
|
|
|
+ int err = mtk_start_dma(eth);
|
|
|
|
+
|
|
|
|
+ if (err)
|
|
|
|
+ return err;
|
|
|
|
+
|
|
|
|
+ napi_enable(ð->rx_napi);
|
|
|
|
+ mtk_irq_enable(eth, MTK_TX_DONE_INT | MTK_RX_DONE_INT);
|
|
|
|
+ }
|
|
|
|
+ atomic_inc(ð->dma_refcnt);
|
|
|
|
+
|
|
|
|
+ phy_start(mac->phy_dev);
|
|
|
|
+ netif_start_queue(dev);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_stop_dma(struct mtk_eth *eth, u32 glo_cfg)
|
|
|
|
+{
|
|
|
|
+ unsigned long flags;
|
|
|
|
+ u32 val;
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ /* stop the dma engine */
|
|
|
|
+ spin_lock_irqsave(ð->page_lock, flags);
|
|
|
|
+ val = mtk_r32(eth, glo_cfg);
|
|
|
|
+ mtk_w32(eth, val & ~(MTK_TX_WB_DDONE | MTK_RX_DMA_EN | MTK_TX_DMA_EN),
|
|
|
|
+ glo_cfg);
|
|
|
|
+ spin_unlock_irqrestore(ð->page_lock, flags);
|
|
|
|
+
|
|
|
|
+ /* wait for dma stop */
|
|
|
|
+ for (i = 0; i < 10; i++) {
|
|
|
|
+ val = mtk_r32(eth, glo_cfg);
|
|
|
|
+ if (val & (MTK_TX_DMA_BUSY | MTK_RX_DMA_BUSY)) {
|
|
|
|
+ msleep(20);
|
|
|
|
+ continue;
|
|
|
|
+ }
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_stop(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+
|
|
|
|
+ netif_tx_disable(dev);
|
|
|
|
+ phy_stop(mac->phy_dev);
|
|
|
|
+
|
|
|
|
+ /* only shutdown DMA if this is the last user */
|
|
|
|
+ if (!atomic_dec_and_test(ð->dma_refcnt))
|
|
|
|
+ return 0;
|
|
|
|
+
|
|
|
|
+ mtk_irq_disable(eth, MTK_TX_DONE_INT | MTK_RX_DONE_INT);
|
|
|
|
+ napi_disable(ð->rx_napi);
|
|
|
|
+
|
|
|
|
+ mtk_stop_dma(eth, MTK_QDMA_GLO_CFG);
|
|
|
|
+
|
|
|
|
+ mtk_dma_free(eth);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int __init mtk_hw_init(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ int err, i;
|
|
|
|
+
|
|
|
|
+ /* reset the frame engine */
|
|
|
|
+ reset_control_assert(eth->rstc);
|
|
|
|
+ usleep_range(10, 20);
|
|
|
|
+ reset_control_deassert(eth->rstc);
|
|
|
|
+ usleep_range(10, 20);
|
|
|
|
+
|
|
|
|
+ /* Set GE2 driving and slew rate */
|
|
|
|
+ regmap_write(eth->pctl, GPIO_DRV_SEL10, 0xa00);
|
|
|
|
+
|
|
|
|
+ /* set GE2 TDSEL */
|
|
|
|
+ regmap_write(eth->pctl, GPIO_OD33_CTRL8, 0x5);
|
|
|
|
+
|
|
|
|
+ /* set GE2 TUNE */
|
|
|
|
+ regmap_write(eth->pctl, GPIO_BIAS_CTRL, 0x0);
|
|
|
|
+
|
|
|
|
+ /* GE1, Force 1000M/FD, FC ON */
|
|
|
|
+ mtk_w32(eth, MAC_MCR_FIXED_LINK, MTK_MAC_MCR(0));
|
|
|
|
+
|
|
|
|
+ /* GE2, Force 1000M/FD, FC ON */
|
|
|
|
+ mtk_w32(eth, MAC_MCR_FIXED_LINK, MTK_MAC_MCR(1));
|
|
|
|
+
|
|
|
|
+ /* Enable RX VLan Offloading */
|
|
|
|
+ mtk_w32(eth, 1, MTK_CDMP_EG_CTRL);
|
|
|
|
+
|
|
|
|
+ err = devm_request_irq(eth->dev, eth->irq, mtk_handle_irq, 0,
|
|
|
|
+ dev_name(eth->dev), eth);
|
|
|
|
+ if (err)
|
|
|
|
+ return err;
|
|
|
|
+
|
|
|
|
+ err = mtk_mdio_init(eth);
|
|
|
|
+ if (err)
|
|
|
|
+ return err;
|
|
|
|
+
|
|
|
|
+ /* disable delay and normal interrupt */
|
|
|
|
+ mtk_w32(eth, 0, MTK_QDMA_DELAY_INT);
|
|
|
|
+ mtk_irq_disable(eth, MTK_TX_DONE_INT | MTK_RX_DONE_INT);
|
|
|
|
+ mtk_w32(eth, RST_GL_PSE, MTK_RST_GL);
|
|
|
|
+ mtk_w32(eth, 0, MTK_RST_GL);
|
|
|
|
+
|
|
|
|
+ /* FE int grouping */
|
|
|
|
+ mtk_w32(eth, 0, MTK_FE_INT_GRP);
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < 2; i++) {
|
|
|
|
+ u32 val = mtk_r32(eth, MTK_GDMA_FWD_CFG(i));
|
|
|
|
+
|
|
|
|
+ /* setup the forward port to send frame to QDMA */
|
|
|
|
+ val &= ~0xffff;
|
|
|
|
+ val |= 0x5555;
|
|
|
|
+
|
|
|
|
+ /* Enable RX checksum */
|
|
|
|
+ val |= MTK_GDMA_ICS_EN | MTK_GDMA_TCS_EN | MTK_GDMA_UCS_EN;
|
|
|
|
+
|
|
|
|
+ /* setup the mac dma */
|
|
|
|
+ mtk_w32(eth, val, MTK_GDMA_FWD_CFG(i));
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int __init mtk_init(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+ const char *mac_addr;
|
|
|
|
+
|
|
|
|
+ mac_addr = of_get_mac_address(mac->of_node);
|
|
|
|
+ if (mac_addr)
|
|
|
|
+ ether_addr_copy(dev->dev_addr, mac_addr);
|
|
|
|
+
|
|
|
|
+ /* If the mac address is invalid, use random mac address */
|
|
|
|
+ if (!is_valid_ether_addr(dev->dev_addr)) {
|
|
|
|
+ random_ether_addr(dev->dev_addr);
|
|
|
|
+ dev_err(eth->dev, "generated random MAC address %pM\n",
|
|
|
|
+ dev->dev_addr);
|
|
|
|
+ dev->addr_assign_type = NET_ADDR_RANDOM;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return mtk_phy_connect(mac);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_uninit(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+
|
|
|
|
+ phy_disconnect(mac->phy_dev);
|
|
|
|
+ mtk_mdio_cleanup(eth);
|
|
|
|
+ mtk_irq_disable(eth, ~0);
|
|
|
|
+ free_irq(dev->irq, dev);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+
|
|
|
|
+ switch (cmd) {
|
|
|
|
+ case SIOCGMIIPHY:
|
|
|
|
+ case SIOCGMIIREG:
|
|
|
|
+ case SIOCSMIIREG:
|
|
|
|
+ return phy_mii_ioctl(mac->phy_dev, ifr, cmd);
|
|
|
|
+ default:
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return -EOPNOTSUPP;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_pending_work(struct work_struct *work)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = container_of(work, struct mtk_mac, pending_work);
|
|
|
|
+ struct mtk_eth *eth = mac->hw;
|
|
|
|
+ struct net_device *dev = eth->netdev[mac->id];
|
|
|
|
+ int err;
|
|
|
|
+
|
|
|
|
+ rtnl_lock();
|
|
|
|
+ mtk_stop(dev);
|
|
|
|
+
|
|
|
|
+ err = mtk_open(dev);
|
|
|
|
+ if (err) {
|
|
|
|
+ netif_alert(eth, ifup, dev,
|
|
|
|
+ "Driver up/down cycle failed, closing device.\n");
|
|
|
|
+ dev_close(dev);
|
|
|
|
+ }
|
|
|
|
+ rtnl_unlock();
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_cleanup(struct mtk_eth *eth)
|
|
|
|
+{
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < MTK_MAC_COUNT; i++) {
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(eth->netdev[i]);
|
|
|
|
+
|
|
|
|
+ if (!eth->netdev[i])
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ unregister_netdev(eth->netdev[i]);
|
|
|
|
+ free_netdev(eth->netdev[i]);
|
|
|
|
+ cancel_work_sync(&mac->pending_work);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_get_settings(struct net_device *dev,
|
|
|
|
+ struct ethtool_cmd *cmd)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ int err;
|
|
|
|
+
|
|
|
|
+ err = phy_read_status(mac->phy_dev);
|
|
|
|
+ if (err)
|
|
|
|
+ return -ENODEV;
|
|
|
|
+
|
|
|
|
+ return phy_ethtool_gset(mac->phy_dev, cmd);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_set_settings(struct net_device *dev,
|
|
|
|
+ struct ethtool_cmd *cmd)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+
|
|
|
|
+ if (cmd->phy_address != mac->phy_dev->mdio.addr) {
|
|
|
|
+ mac->phy_dev = mdiobus_get_phy(mac->hw->mii_bus,
|
|
|
|
+ cmd->phy_address);
|
|
|
|
+ if (!mac->phy_dev)
|
|
|
|
+ return -ENODEV;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return phy_ethtool_sset(mac->phy_dev, cmd);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_get_drvinfo(struct net_device *dev,
|
|
|
|
+ struct ethtool_drvinfo *info)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+
|
|
|
|
+ strlcpy(info->driver, mac->hw->dev->driver->name, sizeof(info->driver));
|
|
|
|
+ strlcpy(info->bus_info, dev_name(mac->hw->dev), sizeof(info->bus_info));
|
|
|
|
+ info->n_stats = ARRAY_SIZE(mtk_ethtool_stats);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static u32 mtk_get_msglevel(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+
|
|
|
|
+ return mac->hw->msg_enable;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_set_msglevel(struct net_device *dev, u32 value)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+
|
|
|
|
+ mac->hw->msg_enable = value;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_nway_reset(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+
|
|
|
|
+ return genphy_restart_aneg(mac->phy_dev);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static u32 mtk_get_link(struct net_device *dev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ int err;
|
|
|
|
+
|
|
|
|
+ err = genphy_update_link(mac->phy_dev);
|
|
|
|
+ if (err)
|
|
|
|
+ return ethtool_op_get_link(dev);
|
|
|
|
+
|
|
|
|
+ return mac->phy_dev->link;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_get_strings(struct net_device *dev, u32 stringset, u8 *data)
|
|
|
|
+{
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ switch (stringset) {
|
|
|
|
+ case ETH_SS_STATS:
|
|
|
|
+ for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++) {
|
|
|
|
+ memcpy(data, mtk_ethtool_stats[i].str, ETH_GSTRING_LEN);
|
|
|
|
+ data += ETH_GSTRING_LEN;
|
|
|
|
+ }
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_get_sset_count(struct net_device *dev, int sset)
|
|
|
|
+{
|
|
|
|
+ switch (sset) {
|
|
|
|
+ case ETH_SS_STATS:
|
|
|
|
+ return ARRAY_SIZE(mtk_ethtool_stats);
|
|
|
|
+ default:
|
|
|
|
+ return -EOPNOTSUPP;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void mtk_get_ethtool_stats(struct net_device *dev,
|
|
|
|
+ struct ethtool_stats *stats, u64 *data)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac = netdev_priv(dev);
|
|
|
|
+ struct mtk_hw_stats *hwstats = mac->hw_stats;
|
|
|
|
+ u64 *data_src, *data_dst;
|
|
|
|
+ unsigned int start;
|
|
|
|
+ int i;
|
|
|
|
+
|
|
|
|
+ if (netif_running(dev) && netif_device_present(dev)) {
|
|
|
|
+ if (spin_trylock(&hwstats->stats_lock)) {
|
|
|
|
+ mtk_stats_update_mac(mac);
|
|
|
|
+ spin_unlock(&hwstats->stats_lock);
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ do {
|
|
|
|
+ data_src = (u64*)hwstats;
|
|
|
|
+ data_dst = data;
|
|
|
|
+ start = u64_stats_fetch_begin_irq(&hwstats->syncp);
|
|
|
|
+
|
|
|
|
+ for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++)
|
|
|
|
+ *data_dst++ = *(data_src + mtk_ethtool_stats[i].offset);
|
|
|
|
+ } while (u64_stats_fetch_retry_irq(&hwstats->syncp, start));
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static struct ethtool_ops mtk_ethtool_ops = {
|
|
|
|
+ .get_settings = mtk_get_settings,
|
|
|
|
+ .set_settings = mtk_set_settings,
|
|
|
|
+ .get_drvinfo = mtk_get_drvinfo,
|
|
|
|
+ .get_msglevel = mtk_get_msglevel,
|
|
|
|
+ .set_msglevel = mtk_set_msglevel,
|
|
|
|
+ .nway_reset = mtk_nway_reset,
|
|
|
|
+ .get_link = mtk_get_link,
|
|
|
|
+ .get_strings = mtk_get_strings,
|
|
|
|
+ .get_sset_count = mtk_get_sset_count,
|
|
|
|
+ .get_ethtool_stats = mtk_get_ethtool_stats,
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+static const struct net_device_ops mtk_netdev_ops = {
|
|
|
|
+ .ndo_init = mtk_init,
|
|
|
|
+ .ndo_uninit = mtk_uninit,
|
|
|
|
+ .ndo_open = mtk_open,
|
|
|
|
+ .ndo_stop = mtk_stop,
|
|
|
|
+ .ndo_start_xmit = mtk_start_xmit,
|
|
|
|
+ .ndo_set_mac_address = mtk_set_mac_address,
|
|
|
|
+ .ndo_validate_addr = eth_validate_addr,
|
|
|
|
+ .ndo_do_ioctl = mtk_do_ioctl,
|
|
|
|
+ .ndo_change_mtu = eth_change_mtu,
|
|
|
|
+ .ndo_tx_timeout = mtk_tx_timeout,
|
|
|
|
+ .ndo_get_stats64 = mtk_get_stats64,
|
|
|
|
+#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
|
|
+ .ndo_poll_controller = mtk_poll_controller,
|
|
|
|
+#endif
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
|
|
|
|
+{
|
|
|
|
+ struct mtk_mac *mac;
|
|
|
|
+ const __be32 *_id = of_get_property(np, "reg", NULL);
|
|
|
|
+ int id, err;
|
|
|
|
+
|
|
|
|
+ if (!_id) {
|
|
|
|
+ dev_err(eth->dev, "missing mac id\n");
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ id = be32_to_cpup(_id);
|
|
|
|
+ if (id >= MTK_MAC_COUNT) {
|
|
|
|
+ dev_err(eth->dev, "%d is not a valid mac id\n", id);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (eth->netdev[id]) {
|
|
|
|
+ dev_err(eth->dev, "duplicate mac id found: %d\n", id);
|
|
|
|
+ return -EINVAL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ eth->netdev[id] = alloc_etherdev(sizeof(*mac));
|
|
|
|
+ if (!eth->netdev[id]) {
|
|
|
|
+ dev_err(eth->dev, "alloc_etherdev failed\n");
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+ }
|
|
|
|
+ mac = netdev_priv(eth->netdev[id]);
|
|
|
|
+ eth->mac[id] = mac;
|
|
|
|
+ mac->id = id;
|
|
|
|
+ mac->hw = eth;
|
|
|
|
+ mac->of_node = np;
|
|
|
|
+ INIT_WORK(&mac->pending_work, mtk_pending_work);
|
|
|
|
+
|
|
|
|
+ mac->hw_stats = devm_kzalloc(eth->dev,
|
|
|
|
+ sizeof(*mac->hw_stats),
|
|
|
|
+ GFP_KERNEL);
|
|
|
|
+ if (!mac->hw_stats) {
|
|
|
|
+ dev_err(eth->dev, "failed to allocate counter memory\n");
|
|
|
|
+ err = -ENOMEM;
|
|
|
|
+ goto free_netdev;
|
|
|
|
+ }
|
|
|
|
+ spin_lock_init(&mac->hw_stats->stats_lock);
|
|
|
|
+ mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET;
|
|
|
|
+
|
|
|
|
+ SET_NETDEV_DEV(eth->netdev[id], eth->dev);
|
|
|
|
+ eth->netdev[id]->netdev_ops = &mtk_netdev_ops;
|
|
|
|
+ eth->netdev[id]->base_addr = (unsigned long)eth->base;
|
|
|
|
+ eth->netdev[id]->vlan_features = MTK_HW_FEATURES &
|
|
|
|
+ ~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX);
|
|
|
|
+ eth->netdev[id]->features |= MTK_HW_FEATURES;
|
|
|
|
+ eth->netdev[id]->ethtool_ops = &mtk_ethtool_ops;
|
|
|
|
+
|
|
|
|
+ err = register_netdev(eth->netdev[id]);
|
|
|
|
+ if (err) {
|
|
|
|
+ dev_err(eth->dev, "error bringing up device\n");
|
|
|
|
+ goto free_netdev;
|
|
|
|
+ }
|
|
|
|
+ eth->netdev[id]->irq = eth->irq;
|
|
|
|
+ netif_info(eth, probe, eth->netdev[id],
|
|
|
|
+ "mediatek frame engine at 0x%08lx, irq %d\n",
|
|
|
|
+ eth->netdev[id]->base_addr, eth->netdev[id]->irq);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+
|
|
|
|
+free_netdev:
|
|
|
|
+ free_netdev(eth->netdev[id]);
|
|
|
|
+ return err;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_probe(struct platform_device *pdev)
|
|
|
|
+{
|
|
|
|
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
|
|
+ struct device_node *mac_np;
|
|
|
|
+ const struct of_device_id *match;
|
|
|
|
+ struct mtk_soc_data *soc;
|
|
|
|
+ struct mtk_eth *eth;
|
|
|
|
+ int err;
|
|
|
|
+
|
|
|
|
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
|
|
|
|
+ pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
|
|
|
|
+
|
|
|
|
+ device_reset(&pdev->dev);
|
|
|
|
+
|
|
|
|
+ match = of_match_device(of_mtk_match, &pdev->dev);
|
|
|
|
+ soc = (struct mtk_soc_data *)match->data;
|
|
|
|
+
|
|
|
|
+ eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
|
|
|
|
+ if (!eth)
|
|
|
|
+ return -ENOMEM;
|
|
|
|
+
|
|
|
|
+ eth->base = devm_ioremap_resource(&pdev->dev, res);
|
|
|
|
+ if (!eth->base)
|
|
|
|
+ return -EADDRNOTAVAIL;
|
|
|
|
+
|
|
|
|
+ spin_lock_init(ð->page_lock);
|
|
|
|
+
|
|
|
|
+ eth->ethsys = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
|
|
|
|
+ "mediatek,ethsys");
|
|
|
|
+ if (IS_ERR(eth->ethsys)) {
|
|
|
|
+ dev_err(&pdev->dev, "no ethsys regmap found\n");
|
|
|
|
+ return PTR_ERR(eth->ethsys);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ eth->pctl = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
|
|
|
|
+ "mediatek,pctl");
|
|
|
|
+ if (IS_ERR(eth->pctl)) {
|
|
|
|
+ dev_err(&pdev->dev, "no pctl regmap found\n");
|
|
|
|
+ return PTR_ERR(eth->pctl);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ eth->rstc = devm_reset_control_get(&pdev->dev, "eth");
|
|
|
|
+ if (IS_ERR(eth->rstc)) {
|
|
|
|
+ dev_err(&pdev->dev, "no eth reset found\n");
|
|
|
|
+ return PTR_ERR(eth->rstc);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ eth->irq = platform_get_irq(pdev, 0);
|
|
|
|
+ if (eth->irq < 0) {
|
|
|
|
+ dev_err(&pdev->dev, "no IRQ resource found\n");
|
|
|
|
+ return -ENXIO;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ eth->clk_ethif = devm_clk_get(&pdev->dev, "ethif");
|
|
|
|
+ eth->clk_esw = devm_clk_get(&pdev->dev, "esw");
|
|
|
|
+ eth->clk_gp1 = devm_clk_get(&pdev->dev, "gp1");
|
|
|
|
+ eth->clk_gp2 = devm_clk_get(&pdev->dev, "gp2");
|
|
|
|
+ if (IS_ERR(eth->clk_esw) || IS_ERR(eth->clk_gp1) ||
|
|
|
|
+ IS_ERR(eth->clk_gp2) || IS_ERR(eth->clk_ethif))
|
|
|
|
+ return -ENODEV;
|
|
|
|
+
|
|
|
|
+ clk_prepare_enable(eth->clk_ethif);
|
|
|
|
+ clk_prepare_enable(eth->clk_esw);
|
|
|
|
+ clk_prepare_enable(eth->clk_gp1);
|
|
|
|
+ clk_prepare_enable(eth->clk_gp2);
|
|
|
|
+
|
|
|
|
+ eth->dev = &pdev->dev;
|
|
|
|
+ eth->msg_enable = netif_msg_init(mtk_msg_level, MTK_DEFAULT_MSG_ENABLE);
|
|
|
|
+
|
|
|
|
+ err = mtk_hw_init(eth);
|
|
|
|
+ if (err)
|
|
|
|
+ return err;
|
|
|
|
+
|
|
|
|
+ for_each_child_of_node(pdev->dev.of_node, mac_np) {
|
|
|
|
+ if (!of_device_is_compatible(mac_np,
|
|
|
|
+ "mediatek,eth-mac"))
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ if (!of_device_is_available(mac_np))
|
|
|
|
+ continue;
|
|
|
|
+
|
|
|
|
+ err = mtk_add_mac(eth, mac_np);
|
|
|
|
+ if (err)
|
|
|
|
+ goto err_free_dev;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /* we run 2 devices on the same DMA ring so we need a dummy device
|
|
|
|
+ * for NAPI to work
|
|
|
|
+ */
|
|
|
|
+ init_dummy_netdev(ð->dummy_dev);
|
|
|
|
+ netif_napi_add(ð->dummy_dev, ð->rx_napi, mtk_poll,
|
|
|
|
+ MTK_NAPI_WEIGHT);
|
|
|
|
+
|
|
|
|
+ platform_set_drvdata(pdev, eth);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+
|
|
|
|
+err_free_dev:
|
|
|
|
+ mtk_cleanup(eth);
|
|
|
|
+ return err;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int mtk_remove(struct platform_device *pdev)
|
|
|
|
+{
|
|
|
|
+ struct mtk_eth *eth = platform_get_drvdata(pdev);
|
|
|
|
+
|
|
|
|
+ clk_disable_unprepare(eth->clk_ethif);
|
|
|
|
+ clk_disable_unprepare(eth->clk_esw);
|
|
|
|
+ clk_disable_unprepare(eth->clk_gp1);
|
|
|
|
+ clk_disable_unprepare(eth->clk_gp2);
|
|
|
|
+
|
|
|
|
+ netif_napi_del(ð->rx_napi);
|
|
|
|
+ mtk_cleanup(eth);
|
|
|
|
+ platform_set_drvdata(pdev, NULL);
|
|
|
|
+
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+const struct of_device_id of_mtk_match[] = {
|
|
|
|
+ { .compatible = "mediatek,mt7623-eth" },
|
|
|
|
+ {},
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+static struct platform_driver mtk_driver = {
|
|
|
|
+ .probe = mtk_probe,
|
|
|
|
+ .remove = mtk_remove,
|
|
|
|
+ .driver = {
|
|
|
|
+ .name = "mtk_soc_eth",
|
|
|
|
+ .owner = THIS_MODULE,
|
|
|
|
+ .of_match_table = of_mtk_match,
|
|
|
|
+ },
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+module_platform_driver(mtk_driver);
|
|
|
|
+
|
|
|
|
+MODULE_LICENSE("GPL");
|
|
|
|
+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
|
|
|
|
+MODULE_DESCRIPTION("Ethernet driver for MediaTek SoC");
|
|
|
|
--- /dev/null
|
|
|
|
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
|
|
|
|
@@ -0,0 +1,421 @@
|
|
|
|
+/* This program is free software; you can redistribute it and/or modify
|
|
|
|
+ * it under the terms of the GNU General Public License as published by
|
|
|
|
+ * the Free Software Foundation; version 2 of the License
|
|
|
|
+ *
|
|
|
|
+ * This program is distributed in the hope that it will be useful,
|
|
|
|
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
+ * GNU General Public License for more details.
|
|
|
|
+ *
|
|
|
|
+ * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
|
|
|
|
+ * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
|
|
|
|
+ * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
|
|
|
|
+ */
|
|
|
|
+
|
|
|
|
+#ifndef MTK_ETH_H
|
|
|
|
+#define MTK_ETH_H
|
|
|
|
+
|
|
|
|
+#define MTK_QDMA_PAGE_SIZE 2048
|
|
|
|
+#define MTK_MAX_RX_LENGTH 1536
|
|
|
|
+#define MTK_TX_DMA_BUF_LEN 0x3fff
|
|
|
|
+#define MTK_DMA_SIZE 256
|
|
|
|
+#define MTK_NAPI_WEIGHT 64
|
|
|
|
+#define MTK_MAC_COUNT 2
|
|
|
|
+#define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
|
|
|
|
+#define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN)
|
|
|
|
+#define MTK_DMA_DUMMY_DESC 0xffffffff
|
|
|
|
+#define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \
|
|
|
|
+ NETIF_MSG_PROBE | \
|
|
|
|
+ NETIF_MSG_LINK | \
|
|
|
|
+ NETIF_MSG_TIMER | \
|
|
|
|
+ NETIF_MSG_IFDOWN | \
|
|
|
|
+ NETIF_MSG_IFUP | \
|
|
|
|
+ NETIF_MSG_RX_ERR | \
|
|
|
|
+ NETIF_MSG_TX_ERR)
|
|
|
|
+#define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \
|
|
|
|
+ NETIF_F_RXCSUM | \
|
|
|
|
+ NETIF_F_HW_VLAN_CTAG_TX | \
|
|
|
|
+ NETIF_F_HW_VLAN_CTAG_RX | \
|
|
|
|
+ NETIF_F_SG | NETIF_F_TSO | \
|
|
|
|
+ NETIF_F_TSO6 | \
|
|
|
|
+ NETIF_F_IPV6_CSUM)
|
|
|
|
+#define NEXT_RX_DESP_IDX(X) (((X) + 1) & (MTK_DMA_SIZE - 1))
|
|
|
|
+
|
|
|
|
+/* Frame Engine Global Reset Register */
|
|
|
|
+#define MTK_RST_GL 0x04
|
|
|
|
+#define RST_GL_PSE BIT(0)
|
|
|
|
+
|
|
|
|
+/* Frame Engine Interrupt Status Register */
|
|
|
|
+#define MTK_INT_STATUS2 0x08
|
|
|
|
+#define MTK_GDM1_AF BIT(28)
|
|
|
|
+#define MTK_GDM2_AF BIT(29)
|
|
|
|
+
|
|
|
|
+/* Frame Engine Interrupt Grouping Register */
|
|
|
|
+#define MTK_FE_INT_GRP 0x20
|
|
|
|
+
|
|
|
|
+/* CDMP Exgress Control Register */
|
|
|
|
+#define MTK_CDMP_EG_CTRL 0x404
|
|
|
|
+
|
|
|
|
+/* GDM Exgress Control Register */
|
|
|
|
+#define MTK_GDMA_FWD_CFG(x) (0x500 + (x * 0x1000))
|
|
|
|
+#define MTK_GDMA_ICS_EN BIT(22)
|
|
|
|
+#define MTK_GDMA_TCS_EN BIT(21)
|
|
|
|
+#define MTK_GDMA_UCS_EN BIT(20)
|
|
|
|
+
|
|
|
|
+/* Unicast Filter MAC Address Register - Low */
|
|
|
|
+#define MTK_GDMA_MAC_ADRL(x) (0x508 + (x * 0x1000))
|
|
|
|
+
|
|
|
|
+/* Unicast Filter MAC Address Register - High */
|
|
|
|
+#define MTK_GDMA_MAC_ADRH(x) (0x50C + (x * 0x1000))
|
|
|
|
+
|
|
|
|
+/* QDMA TX Queue Configuration Registers */
|
|
|
|
+#define MTK_QTX_CFG(x) (0x1800 + (x * 0x10))
|
|
|
|
+#define QDMA_RES_THRES 4
|
|
|
|
+
|
|
|
|
+/* QDMA TX Queue Scheduler Registers */
|
|
|
|
+#define MTK_QTX_SCH(x) (0x1804 + (x * 0x10))
|
|
|
|
+
|
|
|
|
+/* QDMA RX Base Pointer Register */
|
|
|
|
+#define MTK_QRX_BASE_PTR0 0x1900
|
|
|
|
+
|
|
|
|
+/* QDMA RX Maximum Count Register */
|
|
|
|
+#define MTK_QRX_MAX_CNT0 0x1904
|
|
|
|
+
|
|
|
|
+/* QDMA RX CPU Pointer Register */
|
|
|
|
+#define MTK_QRX_CRX_IDX0 0x1908
|
|
|
|
+
|
|
|
|
+/* QDMA RX DMA Pointer Register */
|
|
|
|
+#define MTK_QRX_DRX_IDX0 0x190C
|
|
|
|
+
|
|
|
|
+/* QDMA Global Configuration Register */
|
|
|
|
+#define MTK_QDMA_GLO_CFG 0x1A04
|
|
|
|
+#define MTK_RX_2B_OFFSET BIT(31)
|
|
|
|
+#define MTK_RX_BT_32DWORDS (3 << 11)
|
|
|
|
+#define MTK_TX_WB_DDONE BIT(6)
|
|
|
|
+#define MTK_DMA_SIZE_16DWORDS (2 << 4)
|
|
|
|
+#define MTK_RX_DMA_BUSY BIT(3)
|
|
|
|
+#define MTK_TX_DMA_BUSY BIT(1)
|
|
|
|
+#define MTK_RX_DMA_EN BIT(2)
|
|
|
|
+#define MTK_TX_DMA_EN BIT(0)
|
|
|
|
+#define MTK_DMA_BUSY_TIMEOUT HZ
|
|
|
|
+
|
|
|
|
+/* QDMA Reset Index Register */
|
|
|
|
+#define MTK_QDMA_RST_IDX 0x1A08
|
|
|
|
+#define MTK_PST_DRX_IDX0 BIT(16)
|
|
|
|
+
|
|
|
|
+/* QDMA Delay Interrupt Register */
|
|
|
|
+#define MTK_QDMA_DELAY_INT 0x1A0C
|
|
|
|
+
|
|
|
|
+/* QDMA Flow Control Register */
|
|
|
|
+#define MTK_QDMA_FC_THRES 0x1A10
|
|
|
|
+#define FC_THRES_DROP_MODE BIT(20)
|
|
|
|
+#define FC_THRES_DROP_EN (7 << 16)
|
|
|
|
+#define FC_THRES_MIN 0x4444
|
|
|
|
+
|
|
|
|
+/* QDMA Interrupt Status Register */
|
|
|
|
+#define MTK_QMTK_INT_STATUS 0x1A18
|
|
|
|
+#define MTK_RX_DONE_INT1 BIT(17)
|
|
|
|
+#define MTK_RX_DONE_INT0 BIT(16)
|
|
|
|
+#define MTK_TX_DONE_INT3 BIT(3)
|
|
|
|
+#define MTK_TX_DONE_INT2 BIT(2)
|
|
|
|
+#define MTK_TX_DONE_INT1 BIT(1)
|
|
|
|
+#define MTK_TX_DONE_INT0 BIT(0)
|
|
|
|
+#define MTK_RX_DONE_INT (MTK_RX_DONE_INT0 | MTK_RX_DONE_INT1)
|
|
|
|
+#define MTK_TX_DONE_INT (MTK_TX_DONE_INT0 | MTK_TX_DONE_INT1 | \
|
|
|
|
+ MTK_TX_DONE_INT2 | MTK_TX_DONE_INT3)
|
|
|
|
+
|
|
|
|
+/* QDMA Interrupt Status Register */
|
|
|
|
+#define MTK_QDMA_INT_MASK 0x1A1C
|
|
|
|
+
|
|
|
|
+/* QDMA Interrupt Mask Register */
|
|
|
|
+#define MTK_QDMA_HRED2 0x1A44
|
|
|
|
+
|
|
|
|
+/* QDMA TX Forward CPU Pointer Register */
|
|
|
|
+#define MTK_QTX_CTX_PTR 0x1B00
|
|
|
|
+
|
|
|
|
+/* QDMA TX Forward DMA Pointer Register */
|
|
|
|
+#define MTK_QTX_DTX_PTR 0x1B04
|
|
|
|
+
|
|
|
|
+/* QDMA TX Release CPU Pointer Register */
|
|
|
|
+#define MTK_QTX_CRX_PTR 0x1B10
|
|
|
|
+
|
|
|
|
+/* QDMA TX Release DMA Pointer Register */
|
|
|
|
+#define MTK_QTX_DRX_PTR 0x1B14
|
|
|
|
+
|
|
|
|
+/* QDMA FQ Head Pointer Register */
|
|
|
|
+#define MTK_QDMA_FQ_HEAD 0x1B20
|
|
|
|
+
|
|
|
|
+/* QDMA FQ Head Pointer Register */
|
|
|
|
+#define MTK_QDMA_FQ_TAIL 0x1B24
|
|
|
|
+
|
|
|
|
+/* QDMA FQ Free Page Counter Register */
|
|
|
|
+#define MTK_QDMA_FQ_CNT 0x1B28
|
|
|
|
+
|
|
|
|
+/* QDMA FQ Free Page Buffer Length Register */
|
|
|
|
+#define MTK_QDMA_FQ_BLEN 0x1B2C
|
|
|
|
+
|
|
|
|
+/* GMA1 Received Good Byte Count Register */
|
|
|
|
+#define MTK_GDM1_TX_GBCNT 0x2400
|
|
|
|
+#define MTK_STAT_OFFSET 0x40
|
|
|
|
+
|
|
|
|
+/* QDMA descriptor txd4 */
|
|
|
|
+#define TX_DMA_CHKSUM (0x7 << 29)
|
|
|
|
+#define TX_DMA_TSO BIT(28)
|
|
|
|
+#define TX_DMA_FPORT_SHIFT 25
|
|
|
|
+#define TX_DMA_FPORT_MASK 0x7
|
|
|
|
+#define TX_DMA_INS_VLAN BIT(16)
|
|
|
|
+
|
|
|
|
+/* QDMA descriptor txd3 */
|
|
|
|
+#define TX_DMA_OWNER_CPU BIT(31)
|
|
|
|
+#define TX_DMA_LS0 BIT(30)
|
|
|
|
+#define TX_DMA_PLEN0(_x) (((_x) & MTK_TX_DMA_BUF_LEN) << 16)
|
|
|
|
+#define TX_DMA_SWC BIT(14)
|
|
|
|
+#define TX_DMA_SDL(_x) (((_x) & 0x3fff) << 16)
|
|
|
|
+
|
|
|
|
+/* QDMA descriptor rxd2 */
|
|
|
|
+#define RX_DMA_DONE BIT(31)
|
|
|
|
+#define RX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16)
|
|
|
|
+#define RX_DMA_GET_PLEN0(_x) (((_x) >> 16) & 0x3fff)
|
|
|
|
+
|
|
|
|
+/* QDMA descriptor rxd3 */
|
|
|
|
+#define RX_DMA_VID(_x) ((_x) & 0xfff)
|
|
|
|
+
|
|
|
|
+/* QDMA descriptor rxd4 */
|
|
|
|
+#define RX_DMA_L4_VALID BIT(24)
|
|
|
|
+#define RX_DMA_FPORT_SHIFT 19
|
|
|
|
+#define RX_DMA_FPORT_MASK 0x7
|
|
|
|
+
|
|
|
|
+/* PHY Indirect Access Control registers */
|
|
|
|
+#define MTK_PHY_IAC 0x10004
|
|
|
|
+#define PHY_IAC_ACCESS BIT(31)
|
|
|
|
+#define PHY_IAC_READ BIT(19)
|
|
|
|
+#define PHY_IAC_WRITE BIT(18)
|
|
|
|
+#define PHY_IAC_START BIT(16)
|
|
|
|
+#define PHY_IAC_ADDR_SHIFT 20
|
|
|
|
+#define PHY_IAC_REG_SHIFT 25
|
|
|
|
+#define PHY_IAC_TIMEOUT HZ
|
|
|
|
+
|
|
|
|
+/* Mac control registers */
|
|
|
|
+#define MTK_MAC_MCR(x) (0x10100 + (x * 0x100))
|
|
|
|
+#define MAC_MCR_MAX_RX_1536 BIT(24)
|
|
|
|
+#define MAC_MCR_IPG_CFG (BIT(18) | BIT(16))
|
|
|
|
+#define MAC_MCR_FORCE_MODE BIT(15)
|
|
|
|
+#define MAC_MCR_TX_EN BIT(14)
|
|
|
|
+#define MAC_MCR_RX_EN BIT(13)
|
|
|
|
+#define MAC_MCR_BACKOFF_EN BIT(9)
|
|
|
|
+#define MAC_MCR_BACKPR_EN BIT(8)
|
|
|
|
+#define MAC_MCR_FORCE_RX_FC BIT(5)
|
|
|
|
+#define MAC_MCR_FORCE_TX_FC BIT(4)
|
|
|
|
+#define MAC_MCR_SPEED_1000 BIT(3)
|
|
|
|
+#define MAC_MCR_SPEED_100 BIT(2)
|
|
|
|
+#define MAC_MCR_FORCE_DPX BIT(1)
|
|
|
|
+#define MAC_MCR_FORCE_LINK BIT(0)
|
|
|
|
+#define MAC_MCR_FIXED_LINK (MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | \
|
|
|
|
+ MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | \
|
|
|
|
+ MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | \
|
|
|
|
+ MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_RX_FC | \
|
|
|
|
+ MAC_MCR_FORCE_TX_FC | MAC_MCR_SPEED_1000 | \
|
|
|
|
+ MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_LINK)
|
|
|
|
+
|
|
|
|
+/* GPIO port control registers for GMAC 2*/
|
|
|
|
+#define GPIO_OD33_CTRL8 0x4c0
|
|
|
|
+#define GPIO_BIAS_CTRL 0xed0
|
|
|
|
+#define GPIO_DRV_SEL10 0xf00
|
|
|
|
+
|
|
|
|
+/* ethernet subsystem config register */
|
|
|
|
+#define ETHSYS_SYSCFG0 0x14
|
|
|
|
+#define SYSCFG0_GE_MASK 0x3
|
|
|
|
+#define SYSCFG0_GE_MODE(x, y) (x << (12 + (y * 2)))
|
|
|
|
+
|
|
|
|
+struct mtk_rx_dma {
|
|
|
|
+ unsigned int rxd1;
|
|
|
|
+ unsigned int rxd2;
|
|
|
|
+ unsigned int rxd3;
|
|
|
|
+ unsigned int rxd4;
|
|
|
|
+} __packed __aligned(4);
|
|
|
|
+
|
|
|
|
+struct mtk_tx_dma {
|
|
|
|
+ unsigned int txd1;
|
|
|
|
+ unsigned int txd2;
|
|
|
|
+ unsigned int txd3;
|
|
|
|
+ unsigned int txd4;
|
|
|
|
+} __packed __aligned(4);
|
|
|
|
+
|
|
|
|
+struct mtk_eth;
|
|
|
|
+struct mtk_mac;
|
|
|
|
+
|
|
|
|
+/* struct mtk_hw_stats - the structure that holds the traffic statistics.
|
|
|
|
+ * @stats_lock: make sure that stats operations are atomic
|
|
|
|
+ * @reg_offset: the status register offset of the SoC
|
|
|
|
+ * @syncp: the refcount
|
|
|
|
+ *
|
|
|
|
+ * All of the supported SoCs have hardware counters for traffic statistics.
|
|
|
|
+ * Whenever the status IRQ triggers we can read the latest stats from these
|
|
|
|
+ * counters and store them in this struct.
|
|
|
|
+ */
|
|
|
|
+struct mtk_hw_stats {
|
|
|
|
+ u64 tx_bytes;
|
|
|
|
+ u64 tx_packets;
|
|
|
|
+ u64 tx_skip;
|
|
|
|
+ u64 tx_collisions;
|
|
|
|
+ u64 rx_bytes;
|
|
|
|
+ u64 rx_packets;
|
|
|
|
+ u64 rx_overflow;
|
|
|
|
+ u64 rx_fcs_errors;
|
|
|
|
+ u64 rx_short_errors;
|
|
|
|
+ u64 rx_long_errors;
|
|
|
|
+ u64 rx_checksum_errors;
|
|
|
|
+ u64 rx_flow_control_packets;
|
|
|
|
+
|
|
|
|
+ spinlock_t stats_lock;
|
|
|
|
+ u32 reg_offset;
|
|
|
|
+ struct u64_stats_sync syncp;
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+/* PDMA descriptor can point at 1-2 segments. This enum allows us to track how
|
|
|
|
+ * memory was allocated so that it can be freed properly
|
|
|
|
+ */
|
|
|
|
+enum mtk_tx_flags {
|
|
|
|
+ MTK_TX_FLAGS_SINGLE0 = 0x01,
|
|
|
|
+ MTK_TX_FLAGS_PAGE0 = 0x02,
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+/* struct mtk_tx_buf - This struct holds the pointers to the memory pointed at
|
|
|
|
+ * by the TX descriptor s
|
|
|
|
+ * @skb: The SKB pointer of the packet being sent
|
|
|
|
+ * @dma_addr0: The base addr of the first segment
|
|
|
|
+ * @dma_len0: The length of the first segment
|
|
|
|
+ * @dma_addr1: The base addr of the second segment
|
|
|
|
+ * @dma_len1: The length of the second segment
|
|
|
|
+ */
|
|
|
|
+struct mtk_tx_buf {
|
|
|
|
+ struct sk_buff *skb;
|
|
|
|
+ u32 flags;
|
|
|
|
+ DEFINE_DMA_UNMAP_ADDR(dma_addr0);
|
|
|
|
+ DEFINE_DMA_UNMAP_LEN(dma_len0);
|
|
|
|
+ DEFINE_DMA_UNMAP_ADDR(dma_addr1);
|
|
|
|
+ DEFINE_DMA_UNMAP_LEN(dma_len1);
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+/* struct mtk_tx_ring - This struct holds info describing a TX ring
|
|
|
|
+ * @dma: The descriptor ring
|
|
|
|
+ * @buf: The memory pointed at by the ring
|
|
|
|
+ * @phys: The physical addr of tx_buf
|
|
|
|
+ * @next_free: Pointer to the next free descriptor
|
|
|
|
+ * @last_free: Pointer to the last free descriptor
|
|
|
|
+ * @thresh: The threshold of minimum amount of free descriptors
|
|
|
|
+ * @free_count: QDMA uses a linked list. Track how many free descriptors
|
|
|
|
+ * are present
|
|
|
|
+ */
|
|
|
|
+struct mtk_tx_ring {
|
|
|
|
+ struct mtk_tx_dma *dma;
|
|
|
|
+ struct mtk_tx_buf *buf;
|
|
|
|
+ dma_addr_t phys;
|
|
|
|
+ struct mtk_tx_dma *next_free;
|
|
|
|
+ struct mtk_tx_dma *last_free;
|
|
|
|
+ u16 thresh;
|
|
|
|
+ atomic_t free_count;
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+/* struct mtk_rx_ring - This struct holds info describing a RX ring
|
|
|
|
+ * @dma: The descriptor ring
|
|
|
|
+ * @data: The memory pointed at by the ring
|
|
|
|
+ * @phys: The physical addr of rx_buf
|
|
|
|
+ * @frag_size: How big can each fragment be
|
|
|
|
+ * @buf_size: The size of each packet buffer
|
|
|
|
+ * @calc_idx: The current head of ring
|
|
|
|
+ */
|
|
|
|
+struct mtk_rx_ring {
|
|
|
|
+ struct mtk_rx_dma *dma;
|
|
|
|
+ u8 **data;
|
|
|
|
+ dma_addr_t phys;
|
|
|
|
+ u16 frag_size;
|
|
|
|
+ u16 buf_size;
|
|
|
|
+ u16 calc_idx;
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+/* currently no SoC has more than 2 macs */
|
|
|
|
+#define MTK_MAX_DEVS 2
|
|
|
|
+
|
|
|
|
+/* struct mtk_eth - This is the main datasructure for holding the state
|
|
|
|
+ * of the driver
|
|
|
|
+ * @dev: The device pointer
|
|
|
|
+ * @base: The mapped register i/o base
|
|
|
|
+ * @page_lock: Make sure that register operations are atomic
|
|
|
|
+ * @dummy_dev: we run 2 netdevs on 1 physical DMA ring and need a
|
|
|
|
+ * dummy for NAPI to work
|
|
|
|
+ * @netdev: The netdev instances
|
|
|
|
+ * @mac: Each netdev is linked to a physical MAC
|
|
|
|
+ * @irq: The IRQ that we are using
|
|
|
|
+ * @msg_enable: Ethtool msg level
|
|
|
|
+ * @ethsys: The register map pointing at the range used to setup
|
|
|
|
+ * MII modes
|
|
|
|
+ * @pctl: The register map pointing at the range used to setup
|
|
|
|
+ * GMAC port drive/slew values
|
|
|
|
+ * @dma_refcnt: track how many netdevs are using the DMA engine
|
|
|
|
+ * @tx_ring: Pointer to the memore holding info about the TX ring
|
|
|
|
+ * @rx_ring: Pointer to the memore holding info about the RX ring
|
|
|
|
+ * @rx_napi: The NAPI struct
|
|
|
|
+ * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring
|
|
|
|
+ * @scratch_head: The scratch memory that scratch_ring points to.
|
|
|
|
+ * @clk_ethif: The ethif clock
|
|
|
|
+ * @clk_esw: The switch clock
|
|
|
|
+ * @clk_gp1: The gmac1 clock
|
|
|
|
+ * @clk_gp2: The gmac2 clock
|
|
|
|
+ * @mii_bus: If there is a bus we need to create an instance for it
|
|
|
|
+ */
|
|
|
|
+
|
|
|
|
+struct mtk_eth {
|
|
|
|
+ struct device *dev;
|
|
|
|
+ void __iomem *base;
|
|
|
|
+ struct reset_control *rstc;
|
|
|
|
+ spinlock_t page_lock;
|
|
|
|
+ struct net_device dummy_dev;
|
|
|
|
+ struct net_device *netdev[MTK_MAX_DEVS];
|
|
|
|
+ struct mtk_mac *mac[MTK_MAX_DEVS];
|
|
|
|
+ int irq;
|
|
|
|
+ u32 msg_enable;
|
|
|
|
+ unsigned long sysclk;
|
|
|
|
+ struct regmap *ethsys;
|
|
|
|
+ struct regmap *pctl;
|
|
|
|
+ atomic_t dma_refcnt;
|
|
|
|
+ struct mtk_tx_ring tx_ring;
|
|
|
|
+ struct mtk_rx_ring rx_ring;
|
|
|
|
+ struct napi_struct rx_napi;
|
|
|
|
+ struct mtk_tx_dma *scratch_ring;
|
|
|
|
+ void *scratch_head;
|
|
|
|
+ struct clk *clk_ethif;
|
|
|
|
+ struct clk *clk_esw;
|
|
|
|
+ struct clk *clk_gp1;
|
|
|
|
+ struct clk *clk_gp2;
|
|
|
|
+ struct mii_bus *mii_bus;
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+/* struct mtk_mac - the structure that holds the info about the MACs of the
|
|
|
|
+ * SoC
|
|
|
|
+ * @id: The number of the MAC
|
|
|
|
+ * @of_node: Our devicetree node
|
|
|
|
+ * @hw: Backpointer to our main datastruture
|
|
|
|
+ * @hw_stats: Packet statistics counter
|
|
|
|
+ * @phy_dev: The attached PHY if available
|
|
|
|
+ * @pending_work: The workqueue used to reset the dma ring
|
|
|
|
+ */
|
|
|
|
+struct mtk_mac {
|
|
|
|
+ int id;
|
|
|
|
+ struct device_node *of_node;
|
|
|
|
+ struct mtk_eth *hw;
|
|
|
|
+ struct mtk_hw_stats *hw_stats;
|
|
|
|
+ struct phy_device *phy_dev;
|
|
|
|
+ struct work_struct pending_work;
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+/* the struct describing the SoC. these are declared in the soc_xyz.c files */
|
|
|
|
+extern const struct of_device_id of_mtk_match[];
|
|
|
|
+
|
|
|
|
+/* read the hardware status register */
|
|
|
|
+void mtk_stats_update_mac(struct mtk_mac *mac);
|
|
|
|
+
|
|
|
|
+void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg);
|
|
|
|
+u32 mtk_r32(struct mtk_eth *eth, unsigned reg);
|
|
|
|
+
|
|
|
|
+#endif /* MTK_ETH_H */
|