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Message-ID: <1537165763-13112-3-git-send-email-biao.huang@mediatek.com>
Date: Mon, 17 Sep 2018 14:29:23 +0800
From: Biao Huang <biao.huang@...iatek.com>
To: <davem@...emloft.net>, <robh+dt@...nel.org>
CC: <honghui.zhang@...iatek.com>, <yt.shen@...iatek.com>,
<liguo.zhang@...iatek.com>, <mark.rutland@....com>,
<sean.wang@...iatek.com>, <nelson.chang@...iatek.com>,
<matthias.bgg@...il.com>, <biao.huang@...iatek.com>,
<netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>
Subject: [PATCH 2/2] ethernet: mediatek: add support for MT2712 Ethernet
Add ethernet support for MediaTek SoCs from the MT2712 family.
Signed-off-by: Biao Huang <biao.huang@...iatek.com>
---
drivers/net/ethernet/mediatek/Kconfig | 16 +
drivers/net/ethernet/mediatek/Makefile | 1 +
drivers/net/ethernet/mediatek/gmac/Makefile | 16 +
.../net/ethernet/mediatek/gmac/mt2712-platform.c | 286 ++
.../net/ethernet/mediatek/gmac/mtk-gmac-common.c | 805 +++++
drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.c | 537 +++
drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.h | 151 +
.../net/ethernet/mediatek/gmac/mtk-gmac-ethtool.c | 342 ++
drivers/net/ethernet/mediatek/gmac/mtk-gmac-hw.c | 3446 ++++++++++++++++++++
drivers/net/ethernet/mediatek/gmac/mtk-gmac-mdio.c | 274 ++
drivers/net/ethernet/mediatek/gmac/mtk-gmac-net.c | 1638 ++++++++++
drivers/net/ethernet/mediatek/gmac/mtk-gmac-ptp.c | 153 +
drivers/net/ethernet/mediatek/gmac/mtk-gmac-reg.h | 861 +++++
drivers/net/ethernet/mediatek/gmac/mtk-gmac.h | 683 ++++
14 files changed, 9209 insertions(+)
create mode 100644 drivers/net/ethernet/mediatek/gmac/Makefile
create mode 100644 drivers/net/ethernet/mediatek/gmac/mt2712-platform.c
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-common.c
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.c
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.h
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-ethtool.c
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-hw.c
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-mdio.c
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-net.c
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-ptp.c
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac-reg.h
create mode 100644 drivers/net/ethernet/mediatek/gmac/mtk-gmac.h
diff --git a/drivers/net/ethernet/mediatek/Kconfig b/drivers/net/ethernet/mediatek/Kconfig
index f9149d2..646e250 100644
--- a/drivers/net/ethernet/mediatek/Kconfig
+++ b/drivers/net/ethernet/mediatek/Kconfig
@@ -14,4 +14,20 @@ config NET_MEDIATEK_SOC
This driver supports the gigabit ethernet MACs in the
MediaTek SoC family.
+config MTK_GMAC
+ tristate "MediaTek Gigabit AVB Ethernet support"
+ select PHYLIB
+ select PTP_1588_CLOCK
+ select VLAN_8021Q
+ ---help---
+ This driver supports the gigabit avb ethernet MACs in the
+ MediaTek MT27xx SoC family.
+
+if MTK_GMAC
+config MT2712_GMAC
+ tristate "MT2712 Gigabit Ethernet support"
+ ---help---
+ This driver supports the gigabit avb ethernet MACs in the
+ MediaTek MT2712 SoC.
+endif #MTK_GMAC
endif #NET_VENDOR_MEDIATEK
diff --git a/drivers/net/ethernet/mediatek/Makefile b/drivers/net/ethernet/mediatek/Makefile
index aa3f1c8..9c6a84a 100644
--- a/drivers/net/ethernet/mediatek/Makefile
+++ b/drivers/net/ethernet/mediatek/Makefile
@@ -3,3 +3,4 @@
#
obj-$(CONFIG_NET_MEDIATEK_SOC) += mtk_eth_soc.o
+obj-$(CONFIG_MTK_GMAC) += gmac/
diff --git a/drivers/net/ethernet/mediatek/gmac/Makefile b/drivers/net/ethernet/mediatek/gmac/Makefile
new file mode 100644
index 0000000..f0641df
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/Makefile
@@ -0,0 +1,16 @@
+# GPL-2.0
+#
+# Makefile for the MediaTek network device drivers
+#
+
+obj-$(CONFIG_MTK_GMAC) += mtk-gmac.o
+
+mtk-gmac-objs := mtk-gmac-net.o \
+ mtk-gmac-desc.o \
+ mtk-gmac-common.o \
+ mtk-gmac-hw.o \
+ mtk-gmac-ethtool.o \
+ mtk-gmac-ptp.o \
+ mtk-gmac-mdio.o
+
+mtk-gmac-${CONFIG_MT2712_GMAC} += mt2712-platform.o
diff --git a/drivers/net/ethernet/mediatek/gmac/mt2712-platform.c b/drivers/net/ethernet/mediatek/gmac/mt2712-platform.c
new file mode 100644
index 0000000..2d747ba
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mt2712-platform.c
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2018 MediaTek Inc.
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_net.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include "mtk-gmac.h"
+
+/* Infra configuration register */
+#define TOP_DCMCTL 0x10
+
+/* Infra configuration register bits */
+#define INFRA_DCM_ENABLE BIT(0)
+
+/* Peri configuration register */
+#define PERI_PHY_INTF_SEL 0x418
+#define PERI_PHY_DLY 0x428
+
+/* Peri configuration register bits and bitmasks */
+#define DLY_GTXC_ENABLE BIT(5)
+#define DLY_GTXC_INV BIT(6)
+#define DLY_GTXC_STAGES GENMASK(4, 0)
+#define DLY_RXC_ENABLE BIT(12)
+#define DLY_RXC_INV BIT(13)
+#define DLY_RXC_STAGES GENMASK(11, 7)
+#define DLY_TXC_ENABLE BIT(19)
+#define DLY_TXC_INV BIT(20)
+#define DLY_TXC_STAGES GENMASK(18, 14)
+#define PHY_INTF_MASK GENMASK(2, 0)
+#define RMII_CLK_SRC_MASK GENMASK(5, 4)
+#define RMII_CLK_SRC_RXC BIT(4)
+
+/* Peri configuration register value */
+#define DLY_VAL_RGMII 0x11a3
+#define DLY_VAL_RGMII_ID 0x0
+#define DLY_VAL_RGMII_RXID 0x23
+#define DLY_VAL_RGMII_TXID 0x1180
+#define PHY_INTF_MII_GMII 0x0
+#define PHY_INTF_RGMII 0x1
+#define PHY_INTF_RMII 0x4
+
+static const char * const gmac_clks_source_name[] = {
+ "axi", "apb", "mac_ext", "ptp", "ptp_parent", "ptp_top"
+};
+
+static int get_platform_resources(struct platform_device *pdev,
+ struct gmac_resources *gmac_res)
+{
+ struct resource *res;
+ int gpio;
+
+ /* Get irq resource */
+ gmac_res->irq = platform_get_irq_byname(pdev, "macirq");
+ if (gmac_res->irq < 0) {
+ if (gmac_res->irq != -EPROBE_DEFER) {
+ dev_err(&pdev->dev,
+ "MAC IRQ configuration information not found\n");
+ }
+ return gmac_res->irq;
+ }
+
+ /* Get memory resource */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ gmac_res->base_addr = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(gmac_res->base_addr)) {
+ dev_err(&pdev->dev, "cannot map register memory\n");
+ return PTR_ERR(gmac_res->base_addr);
+ }
+
+ gmac_res->mac_addr =
+ (const char *)of_get_mac_address(pdev->dev.of_node);
+
+ gpio = of_get_named_gpio(pdev->dev.of_node, "reset-gpio", 0);
+ if (!gpio_is_valid(gpio)) {
+ dev_err(&pdev->dev, "failed to parse phy reset gpio\n");
+ return gpio;
+ }
+
+ gmac_res->phy_rst = gpio;
+
+ return 0;
+}
+
+static int mt2712_gmac_top_regmap_get(struct plat_gmac_data *plat)
+{
+ plat->infra_regmap =
+ syscon_regmap_lookup_by_compatible("mediatek,mt2712-infracfg");
+ if (IS_ERR(plat->infra_regmap)) {
+ pr_err("Failed to get infracfg syscon\n");
+ return PTR_ERR(plat->infra_regmap);
+ }
+
+ plat->peri_regmap =
+ syscon_regmap_lookup_by_compatible("mediatek,mt2712-pericfg");
+ if (IS_ERR(plat->peri_regmap)) {
+ pr_err("Failed to get pericfg syscon\n");
+ return PTR_ERR(plat->infra_regmap);
+ }
+
+ return 0;
+}
+
+static int mt2712_gmac_clk_get(struct platform_device *pdev,
+ struct plat_gmac_data *plat)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(plat->clks); i++) {
+ plat->clks[i] = devm_clk_get(&pdev->dev,
+ gmac_clks_source_name[i]);
+ if (IS_ERR(plat->clks[i])) {
+ if (PTR_ERR(plat->clks[i]) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ plat->clks[i] = NULL;
+ }
+ }
+
+ return 0;
+}
+
+static int mt2712_gmac_clk_enable(struct plat_gmac_data *plat)
+{
+ int clk, ret;
+
+ for (clk = 0; clk < GMAC_CLK_MAX ; clk++) {
+ ret = clk_prepare_enable(plat->clks[clk]);
+ if (ret)
+ goto err_disable_clks;
+ }
+
+ ret = clk_set_parent(plat->clks[GMAC_CLK_PTP],
+ plat->clks[GMAC_CLK_PTP_PARENT]);
+ if (ret)
+ goto err_disable_clks;
+
+ return 0;
+
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(plat->clks[clk]);
+
+ return ret;
+}
+
+static void mt2712_gmac_clk_disable(struct plat_gmac_data *plat)
+{
+ int clk;
+
+ for (clk = GMAC_CLK_MAX - 1; clk >= 0; clk--)
+ clk_disable_unprepare(plat->clks[clk]);
+}
+
+static int platform_data_get(struct platform_device *pdev,
+ struct plat_gmac_data *plat)
+{
+ int ret;
+
+ ret = mt2712_gmac_top_regmap_get(plat);
+ if (ret)
+ return ret;
+
+ /* Get clock resource */
+ ret = mt2712_gmac_clk_get(pdev, plat);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void mt2712_gmac_set_interface(struct plat_gmac_data *plat)
+{
+ /* bus clock initialzation */
+ regmap_update_bits(plat->infra_regmap, TOP_DCMCTL,
+ INFRA_DCM_ENABLE, INFRA_DCM_ENABLE);
+
+ regmap_write(plat->peri_regmap, PERI_PHY_DLY, 0);
+
+ /* select phy interface in top control domain */
+ switch (plat->phy_mode) {
+ case PHY_INTERFACE_MODE_MII:
+ case PHY_INTERFACE_MODE_GMII:
+ regmap_update_bits(plat->peri_regmap,
+ PERI_PHY_INTF_SEL,
+ PHY_INTF_MASK,
+ PHY_INTF_MII_GMII);
+ break;
+ case PHY_INTERFACE_MODE_RMII:
+ regmap_update_bits(plat->peri_regmap,
+ PERI_PHY_INTF_SEL,
+ PHY_INTF_MASK,
+ PHY_INTF_RMII);
+ /* bit[5:4] = 1 ref_clk connect to rxc pad */
+ regmap_update_bits(plat->peri_regmap,
+ PERI_PHY_INTF_SEL,
+ RMII_CLK_SRC_MASK,
+ RMII_CLK_SRC_RXC);
+ break;
+ case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ regmap_update_bits(plat->peri_regmap,
+ PERI_PHY_INTF_SEL,
+ PHY_INTF_MASK,
+ PHY_INTF_RGMII);
+ break;
+ default:
+ pr_err("phy interface not support\n");
+ }
+}
+
+static void mt2712_gmac_set_delay(struct plat_gmac_data *plat)
+{
+ switch (plat->phy_mode) {
+ case PHY_INTERFACE_MODE_RGMII:
+ regmap_write(plat->peri_regmap, PERI_PHY_DLY, DLY_VAL_RGMII);
+ break;
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ regmap_write(plat->peri_regmap, PERI_PHY_DLY, DLY_VAL_RGMII_ID);
+ break;
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ regmap_write(plat->peri_regmap, PERI_PHY_DLY, DLY_VAL_RGMII_RXID);
+ break;
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ regmap_write(plat->peri_regmap, PERI_PHY_DLY, DLY_VAL_RGMII_TXID);
+ break;
+ }
+}
+
+static int mt2712_gmac_probe(struct platform_device *pdev)
+{
+ struct plat_gmac_data *plat;
+ struct gmac_resources gmac_res;
+ int ret = 0;
+
+ plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+ if (!plat)
+ return -ENOMEM;
+
+ plat->np = pdev->dev.of_node;
+ plat->phy_mode = of_get_phy_mode(plat->np);
+ plat->gmac_clk_enable = mt2712_gmac_clk_enable;
+ plat->gmac_clk_disable = mt2712_gmac_clk_disable;
+ plat->gmac_set_interface = mt2712_gmac_set_interface;
+ plat->gmac_set_delay = mt2712_gmac_set_delay;
+
+ ret = get_platform_resources(pdev, &gmac_res);
+ if (ret)
+ return ret;
+
+ ret = platform_data_get(pdev, plat);
+ if (ret)
+ return ret;
+
+ return gmac_drv_probe(&pdev->dev, plat, &gmac_res);
+}
+
+int mt2712_gmac_remove(struct platform_device *pdev)
+{
+ return gmac_drv_remove(&pdev->dev);
+}
+
+static const struct of_device_id of_mt2712_gmac_match[] = {
+ { .compatible = "mediatek,mt2712-eth"},
+ {}
+};
+
+MODULE_DEVICE_TABLE(of, of_mt2712_gmac_match);
+
+static struct platform_driver mt2712_gmac_driver = {
+ .probe = mt2712_gmac_probe,
+ .remove = mt2712_gmac_remove,
+ .driver = {
+ .name = "mt2712_gmac_eth",
+ .of_match_table = of_mt2712_gmac_match,
+ },
+};
+
+module_platform_driver(mt2712_gmac_driver);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-common.c b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-common.c
new file mode 100644
index 0000000..fd9d0a8
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-common.c
@@ -0,0 +1,805 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2018 MediaTek Inc.
+#include "mtk-gmac.h"
+
+static int debug = -1;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "MediaTek Message Level (-1: default, 0=none,...,16=all)");
+static const u32 default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
+ NETIF_MSG_LINK | NETIF_MSG_IFUP |
+ NETIF_MSG_IFDOWN | NETIF_MSG_TIMER);
+
+void gmac_dump_tx_desc(struct gmac_pdata *pdata, struct gmac_ring *ring,
+ unsigned int idx, unsigned int count, unsigned int flag)
+{
+ struct gmac_desc_data *desc_data;
+ struct gmac_dma_desc *dma_desc;
+
+ while (count--) {
+ desc_data = GMAC_GET_DESC_DATA(ring, idx);
+ dma_desc = desc_data->dma_desc;
+
+ netdev_dbg(pdata->netdev, "TX: dma_desc=%p, dma_desc_addr=%pad\n",
+ desc_data->dma_desc, &desc_data->dma_desc_addr);
+ netdev_dbg(pdata->netdev,
+ "TX_NORMAL_DESC[%d %s] = %08x:%08x:%08x:%08x\n", idx,
+ (flag == 1) ? "QUEUED FOR TX" : "TX BY DEVICE",
+ le32_to_cpu(dma_desc->desc0),
+ le32_to_cpu(dma_desc->desc1),
+ le32_to_cpu(dma_desc->desc2),
+ le32_to_cpu(dma_desc->desc3));
+
+ idx++;
+ }
+}
+
+void gmac_dump_rx_desc(struct gmac_pdata *pdata,
+ struct gmac_ring *ring,
+ unsigned int idx)
+{
+ struct gmac_desc_data *desc_data;
+ struct gmac_dma_desc *dma_desc;
+
+ desc_data = GMAC_GET_DESC_DATA(ring, idx);
+ dma_desc = desc_data->dma_desc;
+
+ netdev_dbg(pdata->netdev, "RX: dma_desc=%p, dma_desc_addr=%pad\n",
+ desc_data->dma_desc, &desc_data->dma_desc_addr);
+ netdev_dbg(pdata->netdev,
+ "RX_NORMAL_DESC[%d RX BY DEVICE] = %08x:%08x:%08x:%08x\n",
+ idx,
+ le32_to_cpu(dma_desc->desc0),
+ le32_to_cpu(dma_desc->desc1),
+ le32_to_cpu(dma_desc->desc2),
+ le32_to_cpu(dma_desc->desc3));
+}
+
+void gmac_print_pkt(struct net_device *netdev,
+ struct sk_buff *skb,
+ bool tx_rx)
+{
+ struct ethhdr *eth = (struct ethhdr *)skb->data;
+ unsigned char buffer[128];
+ unsigned int i;
+
+ netdev_dbg(netdev, "\n************** SKB dump ****************\n");
+
+ netdev_dbg(netdev, "%s packet of %d bytes\n",
+ (tx_rx ? "TX" : "RX"), skb->len);
+
+ netdev_dbg(netdev, "Dst MAC addr: %pM\n", eth->h_dest);
+ netdev_dbg(netdev, "Src MAC addr: %pM\n", eth->h_source);
+ netdev_dbg(netdev, "Protocol: %#06hx\n", ntohs(eth->h_proto));
+
+ for (i = 0; i < skb->len; i += 32) {
+ unsigned int len = min(skb->len - i, 32U);
+
+ hex_dump_to_buffer(&skb->data[i], len, 32, 1,
+ buffer, sizeof(buffer), false);
+ netdev_dbg(netdev, " %#06x: %s\n", i, buffer);
+ }
+
+ netdev_dbg(netdev, "\n************** SKB dump ****************\n");
+}
+
+static void gmac_default_config(struct gmac_pdata *pdata)
+{
+ pdata->tx_osp_mode = DMA_OSP_ENABLE;
+ pdata->tx_sf_mode = MTL_TSF_ENABLE;
+ pdata->rx_sf_mode = MTL_RSF_DISABLE;
+ pdata->pblx8 = DMA_PBL_X8_ENABLE;
+ pdata->tx_pbl = DMA_PBL_32;
+ pdata->rx_pbl = DMA_PBL_32;
+ pdata->tx_threshold = MTL_TX_THRESHOLD_128;
+ pdata->rx_threshold = MTL_RX_THRESHOLD_128;
+ pdata->tx_pause = 1;
+ pdata->rx_pause = 1;
+ pdata->phy_speed = SPEED_1000;
+ pdata->sysclk_rate = GMAC_SYSCLOCK;
+
+ strlcpy(pdata->drv_name, GMAC_DRV_NAME, sizeof(pdata->drv_name));
+ strlcpy(pdata->drv_ver, GMAC_DRV_VERSION, sizeof(pdata->drv_ver));
+}
+
+static void gmac_init_all_ops(struct gmac_pdata *pdata)
+{
+ gmac_init_desc_ops(&pdata->desc_ops);
+ gmac_init_hw_ops(&pdata->hw_ops);
+}
+
+static void gmac_get_all_hw_features(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_features *hw_feat = &pdata->hw_feat;
+ unsigned int mac_hfr0, mac_hfr1, mac_hfr2;
+
+ mac_hfr0 = GMAC_IOREAD(pdata, MAC_HWF0R);
+ mac_hfr1 = GMAC_IOREAD(pdata, MAC_HWF1R);
+ mac_hfr2 = GMAC_IOREAD(pdata, MAC_HWF2R);
+
+ memset(hw_feat, 0, sizeof(*hw_feat));
+
+ hw_feat->version = GMAC_IOREAD(pdata, MAC_VR);
+
+ /* Hardware feature register 0 */
+ hw_feat->mii = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_MIISEL_POS,
+ MAC_HW_FEAT_MIISEL_LEN);
+ hw_feat->gmii = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_GMIISEL_POS,
+ MAC_HW_FEAT_GMIISEL_LEN);
+ hw_feat->hd = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_HDSEL_POS,
+ MAC_HW_FEAT_HDSEL_LEN);
+ hw_feat->pcs = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_PCSSEL_POS,
+ MAC_HW_FEAT_PCSSEL_LEN);
+ hw_feat->vlhash = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_VLHASH_POS,
+ MAC_HW_FEAT_VLHASH_LEN);
+ hw_feat->sma = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_SMASEL_POS,
+ MAC_HW_FEAT_SMASEL_LEN);
+ hw_feat->rwk = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_RWKSEL_POS,
+ MAC_HW_FEAT_RWKSEL_LEN);
+ hw_feat->mgk = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_MGKSEL_POS,
+ MAC_HW_FEAT_MGKSEL_LEN);
+ hw_feat->mmc = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_MMCSEL_POS,
+ MAC_HW_FEAT_MMCSEL_LEN);
+ hw_feat->aoe = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_ARPOFFSEL_POS,
+ MAC_HW_FEAT_ARPOFFSEL_LEN);
+ hw_feat->ts = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_TSSEL_POS,
+ MAC_HW_FEAT_TSSEL_LEN);
+ hw_feat->eee = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_EEESEL_POS,
+ MAC_HW_FEAT_EEESEL_LEN);
+ hw_feat->tx_coe = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_TXCOSEL_POS,
+ MAC_HW_FEAT_TXCOSEL_LEN);
+ hw_feat->rx_coe = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_RXCOESEL_POS,
+ MAC_HW_FEAT_RXCOESEL_LEN);
+ hw_feat->addn_mac = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_ADDMAC_POS,
+ MAC_HW_FEAT_ADDMAC_LEN);
+ hw_feat->ts_src = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_TSSTSSEL_POS,
+ MAC_HW_FEAT_TSSTSSEL_LEN);
+ hw_feat->sa_vlan_ins = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_SAVLANINS_POS,
+ MAC_HW_FEAT_SAVLANINS_LEN);
+ hw_feat->phyifsel = GMAC_GET_REG_BITS(mac_hfr0,
+ MAC_HW_FEAT_ACTPHYSEL_POS,
+ MAC_HW_FEAT_ACTPHYSEL_LEN);
+
+ /* Hardware feature register 1 */
+ hw_feat->rx_fifo_size = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_RXFIFOSIZE_POS,
+ MAC_HW_RXFIFOSIZE_LEN);
+ hw_feat->tx_fifo_size = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_TXFIFOSIZE_POS,
+ MAC_HW_TXFIFOSIZE_LEN);
+ hw_feat->one_step_en = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_OSTEN_POS,
+ MAC_HW_OSTEN_LEN);
+ hw_feat->ptp_offload = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_PTOEN_POS,
+ MAC_HW_PTOEN_LEN);
+ hw_feat->adv_ts_hi = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_ADVTHWORD_POS,
+ MAC_HW_ADVTHWORD_LEN);
+ hw_feat->dma_width = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_ADDR64_POS,
+ MAC_HW_ADDR64_LEN);
+ hw_feat->dcb = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_DCBEN_POS,
+ MAC_HW_DCBEN_LEN);
+ hw_feat->sph = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_SPHEN_POS,
+ MAC_HW_SPHEN_LEN);
+ hw_feat->tso = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_TSOEN_POS,
+ MAC_HW_TSOEN_LEN);
+ hw_feat->dma_debug = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_DMADEBUGEN_POS,
+ MAC_HW_DMADEBUGEN_LEN);
+ hw_feat->av = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_AV_POS,
+ MAC_HW_AV_LEN);
+ hw_feat->rav = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_RAV_POS,
+ MAC_HW_RAV_LEN);
+ hw_feat->pouost = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_POUOST_POS,
+ MAC_HW_POUOST_LEN);
+ hw_feat->hash_table_size = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_HASHTBLSZ_POS,
+ MAC_HW_HASHTBLSZ_LEN);
+ hw_feat->l3l4_filter_num = GMAC_GET_REG_BITS(mac_hfr1,
+ MAC_HW_L3L4FNUM_POS,
+ MAC_HW_L3L4FNUM_LEN);
+
+ /* Hardware feature register 2 */
+ hw_feat->rx_q_cnt = GMAC_GET_REG_BITS(mac_hfr2,
+ MAC_HW_FEAT_RXQCNT_POS,
+ MAC_HW_FEAT_RXQCNT_LEN);
+ hw_feat->tx_q_cnt = GMAC_GET_REG_BITS(mac_hfr2,
+ MAC_HW_FEAT_TXQCNT_POS,
+ MAC_HW_FEAT_TXQCNT_LEN);
+ hw_feat->rx_ch_cnt = GMAC_GET_REG_BITS(mac_hfr2,
+ MAC_HW_FEAT_RXCHCNT_POS,
+ MAC_HW_FEAT_RXCHCNT_LEN);
+ hw_feat->tx_ch_cnt = GMAC_GET_REG_BITS(mac_hfr2,
+ MAC_HW_FEAT_TXCHCNT_POS,
+ MAC_HW_FEAT_TXCHCNT_LEN);
+ hw_feat->pps_out_num = GMAC_GET_REG_BITS(mac_hfr2,
+ MAC_HW_FEAT_PPSOUTNUM_POS,
+ MAC_HW_FEAT_PPSOUTNUM_LEN);
+ hw_feat->aux_snap_num = GMAC_GET_REG_BITS(mac_hfr2,
+ MAC_HW_FEAT_AUXSNAPNUM_POS,
+ MAC_HW_FEAT_AUXSNAPNUM_LEN);
+
+ /* Translate the Hash Table size into actual number */
+ switch (hw_feat->hash_table_size) {
+ case 0:
+ break;
+ case 1:
+ hw_feat->hash_table_size = 64;
+ break;
+ case 2:
+ hw_feat->hash_table_size = 128;
+ break;
+ case 3:
+ hw_feat->hash_table_size = 256;
+ break;
+ }
+
+ /* Translate the address width setting into actual number */
+ switch (hw_feat->dma_width) {
+ case 0:
+ hw_feat->dma_width = 32;
+ break;
+ case 1:
+ hw_feat->dma_width = 40;
+ break;
+ case 2:
+ hw_feat->dma_width = 48;
+ break;
+ default:
+ hw_feat->dma_width = 32;
+ }
+
+ /* The Queue and Channel counts are zero based so increment them
+ * to get the actual number
+ */
+ hw_feat->rx_q_cnt++;
+ hw_feat->tx_q_cnt++;
+ hw_feat->rx_ch_cnt++;
+ hw_feat->tx_ch_cnt++;
+}
+
+static void gmac_print_all_hw_features(struct gmac_pdata *pdata)
+{
+ char *str = NULL;
+
+ netif_info(pdata, probe, pdata->netdev, "\n");
+ netif_info(pdata, probe, pdata->netdev,
+ "=====================================================\n");
+ netif_info(pdata, probe, pdata->netdev, "\n");
+ netif_info(pdata, probe, pdata->netdev,
+ "HW support following features\n");
+ netif_info(pdata, probe, pdata->netdev, "\n");
+ /* HW Feature Register0 */
+ netif_info(pdata, probe, pdata->netdev,
+ "10/100 Mbps Support : %s\n",
+ pdata->hw_feat.mii ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "1000 Mbps Support : %s\n",
+ pdata->hw_feat.gmii ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "Half-duplex Support : %s\n",
+ pdata->hw_feat.hd ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "PCS Registers(TBI/SGMII/RTBI PHY interface) : %s\n",
+ pdata->hw_feat.pcs ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "VLAN Hash Filter Selected : %s\n",
+ pdata->hw_feat.vlhash ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "SMA (MDIO) Interface : %s\n",
+ pdata->hw_feat.sma ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "PMT Remote Wake-up Packet Enable : %s\n",
+ pdata->hw_feat.rwk ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "PMT Magic Packet Enable : %s\n",
+ pdata->hw_feat.mgk ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "RMON/MMC Module Enable : %s\n",
+ pdata->hw_feat.mmc ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "ARP Offload Enabled : %s\n",
+ pdata->hw_feat.aoe ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "IEEE 1588-2008 Timestamp Enabled : %s\n",
+ pdata->hw_feat.ts ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "Energy Efficient Ethernet Enabled : %s\n",
+ pdata->hw_feat.eee ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "Transmit Checksum Offload Enabled : %s\n",
+ pdata->hw_feat.tx_coe ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "Receive Checksum Offload Enabled : %s\n",
+ pdata->hw_feat.rx_coe ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "Additional MAC Addresses Selected : %s\n",
+ pdata->hw_feat.addn_mac ? "YES" : "NO");
+
+ if (pdata->hw_feat.addn_mac)
+ pdata->max_addr_reg_cnt = pdata->hw_feat.addn_mac;
+ else
+ pdata->max_addr_reg_cnt = 1;
+
+ switch (pdata->hw_feat.ts_src) {
+ case 0:
+ str = "RESERVED";
+ break;
+ case 1:
+ str = "INTERNAL";
+ break;
+ case 2:
+ str = "EXTERNAL";
+ break;
+ case 3:
+ str = "BOTH";
+ break;
+ }
+ netif_info(pdata, probe, pdata->netdev,
+ "Timestamp System Time Source : %s\n", str);
+
+ netif_info(pdata, probe, pdata->netdev,
+ "Source Address or VLAN Insertion Enable : %s\n",
+ pdata->hw_feat.sa_vlan_ins ? "YES" : "NO");
+
+ switch (pdata->hw_feat.phyifsel) {
+ case 0:
+ str = "GMII/MII";
+ break;
+ case 1:
+ str = "RGMII";
+ break;
+ case 2:
+ str = "SGMII";
+ break;
+ case 3:
+ str = "TBI";
+ break;
+ case 4:
+ str = "RMII";
+ break;
+ case 5:
+ str = "RTBI";
+ break;
+ case 6:
+ str = "SMII";
+ break;
+ case 7:
+ str = "RevMII";
+ break;
+ default:
+ str = "RESERVED";
+ }
+ netif_info(pdata, probe, pdata->netdev,
+ "Active PHY Selected : %s\n",
+ str);
+
+ /* HW Feature Register1 */
+ switch (pdata->hw_feat.rx_fifo_size) {
+ case 0:
+ str = "128 bytes";
+ break;
+ case 1:
+ str = "256 bytes";
+ break;
+ case 2:
+ str = "512 bytes";
+ break;
+ case 3:
+ str = "1 KBytes";
+ break;
+ case 4:
+ str = "2 KBytes";
+ break;
+ case 5:
+ str = "4 KBytes";
+ break;
+ case 6:
+ str = "8 KBytes";
+ break;
+ case 7:
+ str = "16 KBytes";
+ break;
+ case 8:
+ str = "32 kBytes";
+ break;
+ case 9:
+ str = "64 KBytes";
+ break;
+ case 10:
+ str = "128 KBytes";
+ break;
+ case 11:
+ str = "256 KBytes";
+ break;
+ default:
+ str = "RESERVED";
+ }
+ netif_info(pdata, probe, pdata->netdev,
+ "MTL Receive FIFO Size : %s\n",
+ str);
+
+ switch (pdata->hw_feat.tx_fifo_size) {
+ case 0:
+ str = "128 bytes";
+ break;
+ case 1:
+ str = "256 bytes";
+ break;
+ case 2:
+ str = "512 bytes";
+ break;
+ case 3:
+ str = "1 KBytes";
+ break;
+ case 4:
+ str = "2 KBytes";
+ break;
+ case 5:
+ str = "4 KBytes";
+ break;
+ case 6:
+ str = "8 KBytes";
+ break;
+ case 7:
+ str = "16 KBytes";
+ break;
+ case 8:
+ str = "32 kBytes";
+ break;
+ case 9:
+ str = "64 KBytes";
+ break;
+ case 10:
+ str = "128 KBytes";
+ break;
+ case 11:
+ str = "256 KBytes";
+ break;
+ default:
+ str = "RESERVED";
+ }
+ netif_info(pdata, probe, pdata->netdev,
+ "MTL Transmit FIFO Size : %s\n",
+ str);
+ netif_info(pdata, probe, pdata->netdev,
+ "One-Step Timingstamping Enable : %s\n",
+ pdata->hw_feat.one_step_en ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "PTP Offload Enable : %s\n",
+ pdata->hw_feat.ptp_offload ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "IEEE 1588 High Word Register Enable : %s\n",
+ pdata->hw_feat.adv_ts_hi ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "DMA Address width : %u\n",
+ pdata->hw_feat.dma_width);
+ pdata->dma_width = pdata->hw_feat.dma_width + 1;
+ netif_info(pdata, probe, pdata->netdev,
+ "DCB Feature Enable : %s\n",
+ pdata->hw_feat.dcb ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "Split Header Feature Enable : %s\n",
+ pdata->hw_feat.sph ? "YES" : "NO");
+ pdata->rx_sph = pdata->hw_feat.sph ? 1 : 0;
+ netif_info(pdata, probe, pdata->netdev,
+ "TCP Segmentation Offload Enable : %s\n",
+ pdata->hw_feat.tso ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "DMA Debug Registers Enabled : %s\n",
+ pdata->hw_feat.dma_debug ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "Audio-Vedio Bridge Feature Enabled : %s\n",
+ pdata->hw_feat.av ? "YES" : "NO");
+ netif_info(pdata, probe, pdata->netdev,
+ "Rx Side AV Feature Enabled : %s\n",
+ (pdata->hw_feat.rav ? "YES" : "NO"));
+ netif_info(pdata, probe, pdata->netdev,
+ "One-Step for PTP over UDP/IP Feature : %s\n",
+ (pdata->hw_feat.pouost ? "YES" : "NO"));
+ netif_info(pdata, probe, pdata->netdev,
+ "Hash Table Size : %u\n",
+ pdata->hw_feat.hash_table_size);
+ netif_info(pdata, probe, pdata->netdev,
+ "Total number of L3 or L4 Filters : %u\n",
+ pdata->hw_feat.l3l4_filter_num);
+
+ /* HW Feature Register2 */
+ netif_info(pdata, probe, pdata->netdev,
+ "Number of MTL Receive Queues : %u\n",
+ pdata->hw_feat.rx_q_cnt);
+ netif_info(pdata, probe, pdata->netdev,
+ "Number of MTL Transmit Queues : %u\n",
+ pdata->hw_feat.tx_q_cnt);
+ netif_info(pdata, probe, pdata->netdev,
+ "Number of DMA Receive Channels : %u\n",
+ pdata->hw_feat.rx_ch_cnt);
+ netif_info(pdata, probe, pdata->netdev,
+ "Number of DMA Transmit Channels : %u\n",
+ pdata->hw_feat.tx_ch_cnt);
+
+ switch (pdata->hw_feat.pps_out_num) {
+ case 0:
+ str = "No PPS output";
+ break;
+ case 1:
+ str = "1 PPS output";
+ break;
+ case 2:
+ str = "2 PPS output";
+ break;
+ case 3:
+ str = "3 PPS output";
+ break;
+ case 4:
+ str = "4 PPS output";
+ break;
+ default:
+ str = "RESERVED";
+ }
+ netif_info(pdata, probe, pdata->netdev,
+ "Number of PPS Outputs : %s\n",
+ str);
+
+ switch (pdata->hw_feat.aux_snap_num) {
+ case 0:
+ str = "No auxiliary input";
+ break;
+ case 1:
+ str = "1 auxiliary input";
+ break;
+ case 2:
+ str = "2 auxiliary input";
+ break;
+ case 3:
+ str = "3 auxiliary input";
+ break;
+ case 4:
+ str = "4 auxiliary input";
+ break;
+ default:
+ str = "RESERVED";
+ }
+ netif_info(pdata, probe, pdata->netdev,
+ "Number of Auxiliary Snapshot Inputs : %s",
+ str);
+
+ netif_info(pdata, probe, pdata->netdev, "\n");
+ netif_info(pdata, probe, pdata->netdev,
+ "=====================================================\n");
+ netif_info(pdata, probe, pdata->netdev, "\n");
+}
+
+static int gmac_init(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct net_device *netdev = pdata->netdev;
+ struct plat_gmac_data *plat = pdata->plat;
+ int ret;
+
+ /* power on PHY */
+ ret = gpio_request(pdata->phy_rst, "phy_rst");
+ if (ret < 0) {
+ dev_err(pdata->dev, "Unable to allocate PHY Reset");
+ return ret;
+ }
+ gpio_direction_output(pdata->phy_rst, 1);
+
+ /* Set the PHY mode, delay macro from top
+ * it should be set before mac reset
+ */
+ plat->gmac_set_interface(plat);
+ plat->gmac_set_delay(plat);
+
+ ret = plat->gmac_clk_enable(plat);
+ if (ret) {
+ dev_err(pdata->dev, "gmac clk enable failed\n");
+ return ret;
+ }
+
+ /* Set default configuration data */
+ gmac_default_config(pdata);
+
+ /* Set all the function pointers */
+ gmac_init_all_ops(pdata);
+
+ /* Issue software reset to device */
+ hw_ops->exit(pdata);
+
+ /* Populate the hardware features */
+ gmac_get_all_hw_features(pdata);
+
+ /* Set the DMA mask, 4GB mode enabled */
+ ret = dma_set_mask_and_coherent(pdata->dev,
+ DMA_BIT_MASK(pdata->dma_width));
+ if (ret) {
+ dev_err(pdata->dev, "dma_set_mask_and_coherent failed");
+ return ret;
+ }
+
+ /* Channel and ring params initializtion
+ * pdata->channel_count;
+ * pdata->tx_ring_count;
+ * pdata->rx_ring_count;
+ * pdata->tx_desc_count;
+ * pdata->rx_desc_count;
+ */
+ BUILD_BUG_ON_NOT_POWER_OF_2(GMAC_TX_DESC_CNT);
+ BUILD_BUG_ON_NOT_POWER_OF_2(GMAC_RX_DESC_CNT);
+ pdata->tx_desc_count = GMAC_TX_DESC_CNT;
+ pdata->rx_desc_count = GMAC_RX_DESC_CNT;
+
+ pdata->tx_ring_count = min_t(unsigned int, pdata->hw_feat.tx_ch_cnt,
+ pdata->hw_feat.tx_q_cnt);
+ pdata->tx_q_count = pdata->tx_ring_count;
+ ret = netif_set_real_num_tx_queues(netdev, pdata->tx_q_count);
+ if (ret) {
+ dev_err(pdata->dev, "error setting real tx queue count\n");
+ return ret;
+ }
+
+ pdata->rx_ring_count = min_t(unsigned int, pdata->hw_feat.rx_ch_cnt,
+ pdata->hw_feat.rx_q_cnt);
+ pdata->rx_q_count = pdata->rx_ring_count;
+ ret = netif_set_real_num_rx_queues(netdev, pdata->rx_q_count);
+ if (ret) {
+ dev_err(pdata->dev, "error setting real rx queue count\n");
+ return ret;
+ }
+
+ pdata->channel_count =
+ max_t(unsigned int, pdata->tx_ring_count, pdata->rx_ring_count);
+
+ /* Set device operations */
+ netdev->netdev_ops = gmac_get_netdev_ops();
+ netdev->ethtool_ops = gmac_get_ethtool_ops();
+
+ /* Set device features */
+ if (pdata->hw_feat.tso) {
+ netdev->hw_features = NETIF_F_TSO;
+ netdev->hw_features |= NETIF_F_TSO6;
+ netdev->hw_features |= NETIF_F_SG;
+ netdev->hw_features |= NETIF_F_IP_CSUM;
+ netdev->hw_features |= NETIF_F_IPV6_CSUM;
+ } else if (pdata->hw_feat.tx_coe) {
+ netdev->hw_features = NETIF_F_IP_CSUM;
+ netdev->hw_features |= NETIF_F_IPV6_CSUM;
+ }
+
+ if (pdata->hw_feat.rx_coe) {
+ netdev->hw_features |= NETIF_F_RXCSUM;
+ netdev->hw_features |= NETIF_F_GRO;
+ }
+
+ netdev->vlan_features |= netdev->hw_features;
+
+ netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
+ if (pdata->hw_feat.sa_vlan_ins)
+ netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
+ if (pdata->hw_feat.vlhash)
+ netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+
+ netdev->features |= netdev->hw_features;
+ pdata->netdev_features = netdev->features;
+
+ netdev->priv_flags |= IFF_UNICAST_FLT;
+
+ /* Use default watchdog timeout */
+ netdev->watchdog_timeo = 0;
+
+ /* Tx coalesce parameters initialization */
+ pdata->tx_usecs = GMAC_INIT_DMA_TX_USECS;
+ pdata->tx_frames = GMAC_INIT_DMA_TX_FRAMES;
+
+ /* Rx coalesce parameters initialization */
+ pdata->rx_riwt = hw_ops->usec_to_riwt(pdata, GMAC_INIT_DMA_RX_USECS);
+ pdata->rx_usecs = GMAC_INIT_DMA_RX_USECS;
+ pdata->rx_frames = GMAC_INIT_DMA_RX_FRAMES;
+
+ return 0;
+}
+
+int gmac_drv_probe(struct device *dev,
+ struct plat_gmac_data *plat,
+ struct gmac_resources *res)
+{
+ struct gmac_pdata *pdata;
+ struct net_device *netdev;
+ int ret = 0;
+
+ netdev = alloc_etherdev_mq(sizeof(struct gmac_pdata),
+ GMAC_MAX_DMA_CHANNELS);
+ if (!netdev) {
+ dev_err(dev, "Unable to alloc new net device\n");
+ return -ENOMEM;
+ }
+
+ SET_NETDEV_DEV(netdev, dev);
+ dev_set_drvdata(dev, netdev);
+ pdata = netdev_priv(netdev);
+ pdata->dev = dev;
+ pdata->netdev = netdev;
+ pdata->plat = plat;
+ pdata->mac_regs = res->base_addr;
+ pdata->dev_irq = res->irq;
+ pdata->phy_rst = res->phy_rst;
+ netdev->base_addr = (unsigned long)res->base_addr;
+ netdev->irq = res->irq;
+
+ if (res->mac_addr)
+ ether_addr_copy(netdev->dev_addr, res->mac_addr);
+
+ /* Check if the MAC address is valid, if not get a random one */
+ if (!is_valid_ether_addr(netdev->dev_addr)) {
+ pr_info("no valid MAC address supplied, using a random one\n");
+ eth_hw_addr_random(pdata->netdev);
+ }
+
+ pdata->msg_enable = netif_msg_init(debug, default_msg_level);
+ ret = gmac_init(pdata);
+ if (ret) {
+ dev_err(dev, "gmac init failed\n");
+ goto err_free_netdev;
+ }
+
+ ret = mdio_register(netdev);
+ if (ret < 0) {
+ dev_err(dev, "MDIO bus (id %d) registration failed\n",
+ pdata->bus_id);
+ goto err_free_netdev;
+ }
+
+ ret = register_netdev(netdev);
+ if (ret) {
+ dev_err(dev, "net device registration failed\n");
+ goto err_free_netdev;
+ }
+
+ gmac_print_all_hw_features(pdata);
+
+ return 0;
+
+err_free_netdev:
+ free_netdev(netdev);
+
+ return ret;
+}
+
+int gmac_drv_remove(struct device *dev)
+{
+ struct net_device *netdev = dev_get_drvdata(dev);
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct plat_gmac_data *plat = pdata->plat;
+
+ plat->gmac_clk_disable(plat);
+ unregister_netdev(netdev);
+ free_netdev(netdev);
+
+ return 0;
+}
+
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.c b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.c
new file mode 100644
index 0000000..be15e5d
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.c
@@ -0,0 +1,537 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2018 MediaTek Inc.
+#include "mtk-gmac.h"
+
+static void gmac_unmap_desc_data(struct gmac_pdata *pdata,
+ struct gmac_desc_data *desc_data,
+ unsigned int tx_rx)
+{
+ /* since DMA memory of tx and rx owns different direction,
+ * it should be a flag to distinguish whose DMA ummapping
+ * is doing.
+ */
+ if (desc_data->skb_dma) {
+ if (desc_data->mapped_as_page) {
+ dma_unmap_page(pdata->dev, desc_data->skb_dma,
+ desc_data->skb_dma_len, DMA_TO_DEVICE);
+ } else if (tx_rx) {
+ dma_unmap_single(pdata->dev, desc_data->skb_dma,
+ desc_data->skb_dma_len, DMA_TO_DEVICE);
+ } else {
+ dma_unmap_single(pdata->dev, desc_data->skb_dma,
+ desc_data->skb_dma_len, DMA_FROM_DEVICE);
+ }
+ desc_data->skb_dma = 0;
+ desc_data->skb_dma_len = 0;
+ }
+
+ if (desc_data->skb) {
+ dev_kfree_skb_any(desc_data->skb);
+ desc_data->skb = NULL;
+ }
+
+ memset(&desc_data->trx, 0, sizeof(desc_data->trx));
+
+ desc_data->mapped_as_page = 0;
+
+ if (desc_data->state_saved) {
+ desc_data->state_saved = 0;
+ desc_data->state.skb = NULL;
+ desc_data->state.len = 0;
+ desc_data->state.error = 0;
+ }
+}
+
+static void gmac_free_ring(struct gmac_pdata *pdata,
+ struct gmac_ring *ring,
+ unsigned int tx_rx)
+{
+ struct gmac_desc_data *desc_data;
+ unsigned int i;
+
+ if (!ring)
+ return;
+
+ if (ring->desc_data_head) {
+ for (i = 0; i < ring->dma_desc_count; i++) {
+ desc_data = GMAC_GET_DESC_DATA(ring, i);
+ gmac_unmap_desc_data(pdata, desc_data, tx_rx);
+ }
+
+ kfree(ring->desc_data_head);
+ ring->desc_data_head = NULL;
+ }
+
+ if (ring->dma_desc_head) {
+ dma_free_coherent(pdata->dev,
+ (sizeof(struct gmac_dma_desc) *
+ ring->dma_desc_count),
+ ring->dma_desc_head,
+ ring->dma_desc_head_addr);
+ ring->dma_desc_head = NULL;
+ }
+}
+
+static int gmac_init_ring(struct gmac_pdata *pdata,
+ struct gmac_ring *ring,
+ unsigned int dma_desc_count)
+{
+ if (!ring)
+ return 0;
+
+ /* Descriptors */
+ ring->dma_desc_count = dma_desc_count;
+ ring->dma_desc_head = dma_alloc_coherent(pdata->dev,
+ (sizeof(struct gmac_dma_desc) *
+ dma_desc_count),
+ &ring->dma_desc_head_addr,
+ GFP_KERNEL);
+ if (!ring->dma_desc_head)
+ return -ENOMEM;
+
+ /* Array of descriptor data */
+ ring->desc_data_head = kcalloc(dma_desc_count,
+ sizeof(struct gmac_desc_data),
+ GFP_KERNEL);
+ if (!ring->desc_data_head)
+ return -ENOMEM;
+
+ netif_dbg(pdata, drv, pdata->netdev,
+ "dma_desc_head=%p, dma_desc_head_addr=%pad, desc_data_head=%p\n",
+ ring->dma_desc_head,
+ &ring->dma_desc_head_addr,
+ ring->desc_data_head);
+
+ return 0;
+}
+
+static void gmac_free_rings(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+
+ if (!pdata->channel_head)
+ return;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ gmac_free_ring(pdata, channel->tx_ring, 1);
+ gmac_free_ring(pdata, channel->rx_ring, 0);
+ }
+}
+
+static int gmac_alloc_rings(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ int ret;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ netif_dbg(pdata, drv, pdata->netdev, "%s - Tx ring:\n",
+ channel->name);
+
+ ret = gmac_init_ring(pdata, channel->tx_ring,
+ pdata->tx_desc_count);
+
+ if (ret) {
+ netdev_alert(pdata->netdev,
+ "error initializing Tx ring");
+ goto err_init_ring;
+ }
+
+ netif_dbg(pdata, drv, pdata->netdev, "%s - Rx ring:\n",
+ channel->name);
+
+ ret = gmac_init_ring(pdata, channel->rx_ring,
+ pdata->rx_desc_count);
+ if (ret) {
+ netdev_alert(pdata->netdev,
+ "error initializing Rx ring\n");
+ goto err_init_ring;
+ }
+ }
+
+ return 0;
+
+err_init_ring:
+ gmac_free_rings(pdata);
+
+ return ret;
+}
+
+static void gmac_free_channels(struct gmac_pdata *pdata)
+{
+ if (!pdata->channel_head)
+ return;
+
+ kfree(pdata->channel_head->tx_ring);
+ pdata->channel_head->tx_ring = NULL;
+
+ kfree(pdata->channel_head->rx_ring);
+ pdata->channel_head->rx_ring = NULL;
+
+ kfree(pdata->channel_head);
+
+ pdata->channel_head = NULL;
+ pdata->channel_count = 0;
+}
+
+static int gmac_alloc_channels(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel_head, *channel;
+ struct gmac_ring *tx_ring, *rx_ring;
+ int ret = -ENOMEM;
+ unsigned int i;
+
+ channel_head = kcalloc(pdata->channel_count,
+ sizeof(struct gmac_channel), GFP_KERNEL);
+ if (!channel_head)
+ return ret;
+
+ netif_dbg(pdata, drv, pdata->netdev,
+ "channel_head=%p\n", channel_head);
+
+ tx_ring = kcalloc(pdata->tx_ring_count, sizeof(struct gmac_ring),
+ GFP_KERNEL);
+ if (!tx_ring)
+ goto err_tx_ring;
+
+ rx_ring = kcalloc(pdata->rx_ring_count, sizeof(struct gmac_ring),
+ GFP_KERNEL);
+ if (!rx_ring)
+ goto err_rx_ring;
+
+ for (i = 0, channel = channel_head; i < pdata->channel_count;
+ i++, channel++) {
+ snprintf(channel->name, sizeof(channel->name), "channel-%u", i);
+ channel->pdata = pdata;
+ channel->queue_index = i;
+
+ if (pdata->per_channel_irq) {
+ /* Get the per DMA interrupt */
+ ret = pdata->channel_irq[i];
+ if (ret < 0) {
+ netdev_err(pdata->netdev,
+ "get_irq %u failed\n",
+ i + 1);
+ goto err_irq;
+ }
+ channel->dma_irq = ret;
+ }
+
+ if (i < pdata->tx_ring_count)
+ channel->tx_ring = tx_ring++;
+
+ if (i < pdata->rx_ring_count)
+ channel->rx_ring = rx_ring++;
+
+ netif_dbg(pdata, drv, pdata->netdev,
+ "%s: dma_regs=%p, tx_ring=%p, rx_ring=%p\n",
+ channel->name, channel->dma_regs,
+ channel->tx_ring, channel->rx_ring);
+ }
+
+ pdata->channel_head = channel_head;
+
+ return 0;
+
+err_irq:
+ kfree(rx_ring);
+
+err_rx_ring:
+ kfree(tx_ring);
+
+err_tx_ring:
+ kfree(channel_head);
+
+ return ret;
+}
+
+static void gmac_free_channels_and_rings(struct gmac_pdata *pdata)
+{
+ gmac_free_rings(pdata);
+
+ gmac_free_channels(pdata);
+}
+
+static int gmac_alloc_channels_and_rings(struct gmac_pdata *pdata)
+{
+ int ret;
+
+ ret = gmac_alloc_channels(pdata);
+ if (ret)
+ goto err_alloc;
+
+ ret = gmac_alloc_rings(pdata);
+ if (ret)
+ goto err_alloc;
+
+ return 0;
+
+err_alloc:
+ gmac_free_channels_and_rings(pdata);
+
+ return ret;
+}
+
+static int gmac_map_rx_buffer(struct gmac_pdata *pdata,
+ struct gmac_ring *ring,
+ struct gmac_desc_data *desc_data)
+{
+ struct sk_buff *skb = desc_data->skb;
+
+ if (skb) {
+ skb_trim(skb, 0);
+ goto map_skb;
+ }
+
+ skb = __netdev_alloc_skb_ip_align(pdata->netdev,
+ pdata->rx_buf_size,
+ GFP_ATOMIC);
+ if (!skb) {
+ netdev_alert(pdata->netdev, "Failed to allocate skb\n");
+ return -ENOMEM;
+ }
+ desc_data->skb = skb;
+ desc_data->skb_dma_len = pdata->rx_buf_size;
+ map_skb:
+ desc_data->skb_dma = dma_map_single(pdata->dev,
+ skb->data,
+ pdata->rx_buf_size,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(pdata->dev, desc_data->skb_dma))
+ netdev_alert(pdata->netdev, "failed to do the RX dma map\n");
+
+ desc_data->mapped_as_page = 0;
+
+ return 0;
+}
+
+static void gmac_tx_desc_init(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct gmac_desc_data *desc_data;
+ struct gmac_dma_desc *dma_desc;
+ struct gmac_channel *channel;
+ struct gmac_ring *ring;
+ dma_addr_t dma_desc_addr;
+ unsigned int i, j;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ ring = channel->tx_ring;
+ if (!ring)
+ break;
+
+ dma_desc = ring->dma_desc_head;
+ dma_desc_addr = ring->dma_desc_head_addr;
+
+ for (j = 0; j < ring->dma_desc_count; j++) {
+ desc_data = GMAC_GET_DESC_DATA(ring, j);
+
+ desc_data->dma_desc = dma_desc;
+ desc_data->dma_desc_addr = dma_desc_addr;
+
+ dma_desc++;
+ dma_desc_addr += sizeof(struct gmac_dma_desc);
+ }
+
+ ring->cur = 0;
+ ring->dirty = 0;
+ memset(&ring->tx, 0, sizeof(ring->tx));
+
+ hw_ops->tx_desc_init(channel);
+ }
+}
+
+static void gmac_rx_desc_init(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct gmac_desc_ops *desc_ops = &pdata->desc_ops;
+ struct gmac_desc_data *desc_data;
+ struct gmac_dma_desc *dma_desc;
+ struct gmac_channel *channel;
+ struct gmac_ring *ring;
+ dma_addr_t dma_desc_addr;
+ unsigned int i, j;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ ring = channel->rx_ring;
+ if (!ring)
+ break;
+
+ dma_desc = ring->dma_desc_head;
+ dma_desc_addr = ring->dma_desc_head_addr;
+
+ for (j = 0; j < ring->dma_desc_count; j++) {
+ desc_data = GMAC_GET_DESC_DATA(ring, j);
+
+ desc_data->dma_desc = dma_desc;
+ desc_data->dma_desc_addr = dma_desc_addr;
+
+ if (desc_ops->map_rx_buffer(pdata, ring, desc_data))
+ break;
+
+ dma_desc++;
+ dma_desc_addr += sizeof(struct gmac_dma_desc);
+ }
+
+ ring->cur = 0;
+ ring->dirty = 0;
+
+ hw_ops->rx_desc_init(channel);
+ }
+}
+
+static int gmac_map_tx_skb(struct gmac_channel *channel,
+ struct sk_buff *skb)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_ring *ring = channel->tx_ring;
+ unsigned int start_index, cur_index;
+ struct gmac_desc_data *desc_data;
+ unsigned int offset, datalen, len;
+ struct gmac_pkt_info *pkt_info;
+ struct skb_frag_struct *frag;
+ unsigned int tso, vlan;
+ dma_addr_t skb_dma;
+ unsigned int i;
+
+ offset = 0;
+ start_index = ring->cur;
+ cur_index = ring->cur;
+
+ pkt_info = &ring->pkt_info;
+ pkt_info->desc_count = 0;
+ pkt_info->length = 0;
+
+ tso = GMAC_GET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_TSO_ENABLE_POS,
+ TX_PACKET_ATTRIBUTES_TSO_ENABLE_LEN);
+ vlan = GMAC_GET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_VLAN_CTAG_POS,
+ TX_PACKET_ATTRIBUTES_VLAN_CTAG_LEN);
+
+ /* Save space for a context descriptor if needed */
+ if ((tso && pkt_info->mss != ring->tx.cur_mss) ||
+ (vlan && pkt_info->vlan_ctag != ring->tx.cur_vlan_ctag))
+ cur_index++;
+
+ desc_data = GMAC_GET_DESC_DATA(ring, cur_index);
+
+ if (tso) {
+ /* Map the TSO header */
+ skb_dma = dma_map_single(pdata->dev, skb->data,
+ pkt_info->header_len, DMA_TO_DEVICE);
+ if (dma_mapping_error(pdata->dev, skb_dma)) {
+ netdev_alert(pdata->netdev, "dma_map_single failed\n");
+ goto err_out;
+ }
+ desc_data->skb_dma = skb_dma;
+ desc_data->skb_dma_len = pkt_info->header_len;
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "skb header: index=%u, dma=%pad, len=%u\n",
+ cur_index, &skb_dma, pkt_info->header_len);
+
+ offset = pkt_info->header_len;
+
+ pkt_info->length += pkt_info->header_len;
+
+ cur_index++;
+ desc_data = GMAC_GET_DESC_DATA(ring, cur_index);
+ }
+
+ /* Map the (remainder of the) packet */
+ for (datalen = skb_headlen(skb) - offset; datalen; ) {
+ len = min_t(unsigned int, datalen, GMAC_TX_MAX_BUF_SIZE);
+
+ skb_dma = dma_map_single(pdata->dev, skb->data + offset, len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(pdata->dev, skb_dma)) {
+ netdev_alert(pdata->netdev, "dma_map_single failed\n");
+ goto err_out;
+ }
+ desc_data->skb_dma = skb_dma;
+ desc_data->skb_dma_len = len;
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "skb data: index=%u, dma=%pad, len=%u\n",
+ cur_index, &skb_dma, len);
+
+ datalen -= len;
+ offset += len;
+
+ pkt_info->length += len;
+
+ cur_index++;
+ desc_data = GMAC_GET_DESC_DATA(ring, cur_index);
+ }
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "mapping frag %u\n", i);
+
+ frag = &skb_shinfo(skb)->frags[i];
+ offset = 0;
+
+ for (datalen = skb_frag_size(frag); datalen; ) {
+ len = min_t(unsigned int, datalen,
+ GMAC_TX_MAX_BUF_SIZE);
+
+ skb_dma = skb_frag_dma_map(pdata->dev, frag, offset,
+ len, DMA_TO_DEVICE);
+ if (dma_mapping_error(pdata->dev, skb_dma)) {
+ netdev_alert(pdata->netdev,
+ "skb_frag_dma_map failed\n");
+ goto err_out;
+ }
+ desc_data->skb_dma = skb_dma;
+ desc_data->skb_dma_len = len;
+ desc_data->mapped_as_page = 1;
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "skb frag: index=%u, dma=%pad, len=%u\n",
+ cur_index, &skb_dma, len);
+
+ datalen -= len;
+ offset += len;
+
+ pkt_info->length += len;
+
+ cur_index++;
+ desc_data = GMAC_GET_DESC_DATA(ring, cur_index);
+ }
+ }
+
+ /* Save the skb address in the last entry. We always have some data
+ * that has been mapped so desc_data is always advanced past the last
+ * piece of mapped data - use the entry pointed to by cur_index - 1.
+ */
+ desc_data = GMAC_GET_DESC_DATA(ring, cur_index - 1);
+ desc_data->skb = skb;
+
+ /* Save the number of descriptor entries used */
+ pkt_info->desc_count = cur_index - start_index;
+
+ return pkt_info->desc_count;
+
+err_out:
+ while (start_index != cur_index) {
+ desc_data = GMAC_GET_DESC_DATA(ring, start_index++);
+ gmac_unmap_desc_data(pdata, desc_data, 1);
+ }
+
+ return 0;
+}
+
+void gmac_init_desc_ops(struct gmac_desc_ops *desc_ops)
+{
+ desc_ops->alloc_channles_and_rings = gmac_alloc_channels_and_rings;
+ desc_ops->free_channels_and_rings = gmac_free_channels_and_rings;
+ desc_ops->map_tx_skb = gmac_map_tx_skb;
+ desc_ops->map_rx_buffer = gmac_map_rx_buffer;
+ desc_ops->unmap_desc_data = gmac_unmap_desc_data;
+ desc_ops->tx_desc_init = gmac_tx_desc_init;
+ desc_ops->rx_desc_init = gmac_rx_desc_init;
+}
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.h b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.h
new file mode 100644
index 0000000..8c353ed
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-desc.h
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ */
+#ifndef __MTK_GMAC_DESC_H__
+#define __MTK_GMAC_DESC_H__
+
+#include <linux/bitops.h>
+
+/* Normal transmit descriptor defines (without split feature) */
+
+#define GMAC_GET_REG_BITS_LE(var, pos, len) ({ \
+ typeof(pos) _pos = (pos); \
+ typeof(len) _len = (len); \
+ typeof(var) _var = le32_to_cpu((var)); \
+ ((_var) & GENMASK(_pos + _len - 1, _pos)) >> (_pos); \
+})
+
+#define GMAC_SET_REG_BITS_LE(var, pos, len, val) ({ \
+ typeof(var) _var = (var); \
+ typeof(pos) _pos = (pos); \
+ typeof(len) _len = (len); \
+ typeof(val) _val = (val); \
+ _val = (_val << _pos) & GENMASK(_pos + _len - 1, _pos); \
+ _var = (_var & ~GENMASK(_pos + _len - 1, _pos)) | _val; \
+ cpu_to_le32(_var); \
+})
+
+#define TX_PACKET_ATTRIBUTES_CSUM_ENABLE_POS 0
+#define TX_PACKET_ATTRIBUTES_CSUM_ENABLE_LEN 1
+#define TX_PACKET_ATTRIBUTES_TSO_ENABLE_POS 1
+#define TX_PACKET_ATTRIBUTES_TSO_ENABLE_LEN 1
+#define TX_PACKET_ATTRIBUTES_VLAN_CTAG_POS 2
+#define TX_PACKET_ATTRIBUTES_VLAN_CTAG_LEN 1
+#define TX_PACKET_ATTRIBUTES_PTP_POS 3
+#define TX_PACKET_ATTRIBUTES_PTP_LEN 1
+
+#define TX_CONTEXT_DESC2_MSS_POS 0
+#define TX_CONTEXT_DESC2_MSS_LEN 14
+#define TX_CONTEXT_DESC3_CTXT_POS 30
+#define TX_CONTEXT_DESC3_CTXT_LEN 1
+#define TX_CONTEXT_DESC3_TCMSSV_POS 26
+#define TX_CONTEXT_DESC3_TCMSSV_LEN 1
+#define TX_CONTEXT_DESC3_VLTV_POS 16
+#define TX_CONTEXT_DESC3_VLTV_LEN 1
+#define TX_CONTEXT_DESC3_VT_POS 0
+#define TX_CONTEXT_DESC3_VT_LEN 16
+
+#define TX_NORMAL_DESC2_HL_B1L_POS 0
+#define TX_NORMAL_DESC2_HL_B1L_LEN 14
+#define TX_NORMAL_DESC2_IC_POS 31
+#define TX_NORMAL_DESC2_IC_LEN 1
+#define TX_NORMAL_DESC2_TTSE_POS 30
+#define TX_NORMAL_DESC2_TTSE_LEN 1
+#define TX_NORMAL_DESC2_VTIR_POS 14
+#define TX_NORMAL_DESC2_VTIR_LEN 2
+#define TX_NORMAL_DESC3_CIC_POS 16
+#define TX_NORMAL_DESC3_CIC_LEN 2
+#define TX_NORMAL_DESC3_CPC_POS 26
+#define TX_NORMAL_DESC3_CPC_LEN 2
+#define TX_NORMAL_DESC3_CTXT_POS 30
+#define TX_NORMAL_DESC3_CTXT_LEN 1
+#define TX_NORMAL_DESC3_FD_POS 29
+#define TX_NORMAL_DESC3_FD_LEN 1
+#define TX_NORMAL_DESC3_FL_POS 0
+#define TX_NORMAL_DESC3_FL_LEN 15
+#define TX_NORMAL_DESC3_LD_POS 28
+#define TX_NORMAL_DESC3_LD_LEN 1
+#define TX_NORMAL_DESC3_OWN_POS 31
+#define TX_NORMAL_DESC3_OWN_LEN 1
+#define TX_NORMAL_DESC3_TCPHDRLEN_POS 19
+#define TX_NORMAL_DESC3_TCPHDRLEN_LEN 4
+#define TX_NORMAL_DESC3_TCPPL_POS 0
+#define TX_NORMAL_DESC3_TCPPL_LEN 18
+#define TX_NORMAL_DESC3_TSE_POS 18
+#define TX_NORMAL_DESC3_TSE_LEN 1
+#define TX_NORMAL_DESC3_TTSS_POS 17
+#define TX_NORMAL_DESC3_TTSS_LEN 1
+
+#define TX_NORMAL_DESC2_VLAN_INSERT 0x2
+
+#define RX_PACKET_ATTRIBUTES_CSUM_DONE_POS 0
+#define RX_PACKET_ATTRIBUTES_CSUM_DONE_LEN 1
+#define RX_PACKET_ATTRIBUTES_VLAN_CTAG_POS 1
+#define RX_PACKET_ATTRIBUTES_VLAN_CTAG_LEN 1
+#define RX_PACKET_ATTRIBUTES_INCOMPLETE_POS 2
+#define RX_PACKET_ATTRIBUTES_INCOMPLETE_LEN 1
+#define RX_PACKET_ATTRIBUTES_CONTEXT_POS 3
+#define RX_PACKET_ATTRIBUTES_CONTEXT_LEN 1
+#define RX_PACKET_ATTRIBUTES_RX_TSTAMP_POS 4
+#define RX_PACKET_ATTRIBUTES_RX_TSTAMP_LEN 1
+
+#define RX_PACKET_ERRORS_CRC_POS 2
+#define RX_PACKET_ERRORS_CRC_LEN 1
+#define RX_PACKET_ERRORS_FRAME_POS 3
+#define RX_PACKET_ERRORS_FRAME_LEN 1
+#define RX_PACKET_ERRORS_LENGTH_POS 0
+#define RX_PACKET_ERRORS_LENGTH_LEN 1
+#define RX_PACKET_ERRORS_OVERRUN_POS 1
+#define RX_PACKET_ERRORS_OVERRUN_LEN 1
+
+#define RX_NORMAL_DESC0_OVT_POS 0
+#define RX_NORMAL_DESC0_OVT_LEN 16
+#define RX_NORMAL_DESC1_TSA_POS 14
+#define RX_NORMAL_DESC1_TSA_LEN 1
+#define RX_NORMAL_DESC1_IPHE_POS 3
+#define RX_NORMAL_DESC1_IPHE_LEN 1
+#define RX_NORMAL_DESC1_IPCB_POS 6
+#define RX_NORMAL_DESC1_IPCB_LEN 1
+#define RX_NORMAL_DESC1_IPCE_POS 7
+#define RX_NORMAL_DESC1_IPCE_LEN 1
+#define RX_NORMAL_DESC2_HL_POS 0
+#define RX_NORMAL_DESC2_HL_LEN 10
+#define RX_NORMAL_DESC3_CDA_POS 27
+#define RX_NORMAL_DESC3_CDA_LEN 1
+#define RX_NORMAL_DESC3_CTXT_POS 30
+#define RX_NORMAL_DESC3_CTXT_LEN 1
+#define RX_NORMAL_DESC3_ES_POS 15
+#define RX_NORMAL_DESC3_ES_LEN 1
+#define RX_NORMAL_DESC3_LT_POS 16
+#define RX_NORMAL_DESC3_LT_LEN 3
+#define RX_NORMAL_DESC3_FD_POS 29
+#define RX_NORMAL_DESC3_FD_LEN 1
+#define RX_NORMAL_DESC3_INTE_POS 30
+#define RX_NORMAL_DESC3_INTE_LEN 1
+#define RX_NORMAL_DESC3_BUF2V_POS 25
+#define RX_NORMAL_DESC3_BUF2V_LEN 1
+#define RX_NORMAL_DESC3_BUF1V_POS 24
+#define RX_NORMAL_DESC3_BUF1V_LEN 1
+#define RX_NORMAL_DESC3_L34T_POS 20
+#define RX_NORMAL_DESC3_L34T_LEN 4
+#define RX_NORMAL_DESC3_LD_POS 28
+#define RX_NORMAL_DESC3_LD_LEN 1
+#define RX_NORMAL_DESC3_OWN_POS 31
+#define RX_NORMAL_DESC3_OWN_LEN 1
+#define RX_NORMAL_DESC3_PL_POS 0
+#define RX_NORMAL_DESC3_PL_LEN 15
+#define RX_NORMAL_DESC3_RS2V_POS 27
+#define RX_NORMAL_DESC3_RS2V_LEN 1
+#define RX_NORMAL_DESC3_RS1V_POS 26
+#define RX_NORMAL_DESC3_RS1V_LEN 1
+#define RX_NORMAL_DESC3_RS0V_POS 25
+#define RX_NORMAL_DESC3_RS0V_LEN 1
+
+#define RX_CONTEXT_DESC3_OWN_POS 31
+#define RX_CONTEXT_DESC3_OWN_LEN 1
+#define RX_CONTEXT_DESC3_CTXT_POS 30
+#define RX_CONTEXT_DESC3_CTXT_LEN 1
+
+#endif /* __MT2712_DESCS_H__ */
+
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-ethtool.c b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-ethtool.c
new file mode 100644
index 0000000..68eb4cf
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-ethtool.c
@@ -0,0 +1,342 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2018 MediaTek Inc.
+#include <linux/ethtool.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+
+#include "mtk-gmac.h"
+
+struct gmac_stats_desc {
+ char stat_string[ETH_GSTRING_LEN];
+ int stat_offset;
+};
+
+#define GMAC_STAT(str, var) \
+ { \
+ str, \
+ offsetof(struct gmac_pdata, stats.var), \
+ }
+
+static const struct gmac_stats_desc gmac_gstring_stats[] = {
+ /* MMC TX counters */
+ GMAC_STAT("tx_bytes", txoctetcount_gb),
+ GMAC_STAT("tx_bytes_good", txoctetcount_g),
+ GMAC_STAT("tx_packets", txframecount_gb),
+ GMAC_STAT("tx_packets_good", txframecount_g),
+ GMAC_STAT("tx_unicast_packets", txunicastframes_gb),
+ GMAC_STAT("tx_broadcast_packets", txbroadcastframes_gb),
+ GMAC_STAT("tx_broadcast_packets_good", txbroadcastframes_g),
+ GMAC_STAT("tx_multicast_packets", txmulticastframes_gb),
+ GMAC_STAT("tx_multicast_packets_good", txmulticastframes_g),
+ GMAC_STAT("tx_vlan_packets_good", txvlanframes_g),
+ GMAC_STAT("tx_over_size_packets_good", txosizeframe_g),
+ GMAC_STAT("tx_64_byte_packets", tx64octets_gb),
+ GMAC_STAT("tx_65_to_127_byte_packets", tx65to127octets_gb),
+ GMAC_STAT("tx_128_to_255_byte_packets", tx128to255octets_gb),
+ GMAC_STAT("tx_256_to_511_byte_packets", tx256to511octets_gb),
+ GMAC_STAT("tx_512_to_1023_byte_packets", tx512to1023octets_gb),
+ GMAC_STAT("tx_1024_to_max_byte_packets", tx1024tomaxoctets_gb),
+ GMAC_STAT("tx_underflow_errors", txunderflowerror),
+ GMAC_STAT("tx_single_collision_good", txsinglecol_g),
+ GMAC_STAT("tx_multiple_collision_good", txmulticol_g),
+ GMAC_STAT("tx_deferred_packets", txdeferred),
+ GMAC_STAT("tx_late_collision_packets", txlatecol),
+ GMAC_STAT("tx_excessive-collision_packets", txexesscol),
+ GMAC_STAT("tx_carrier_error_packets", txcarriererror),
+ GMAC_STAT("tx_excessive_deferral_error", txexcessdef),
+ GMAC_STAT("tx_pause_frames", txpauseframes),
+ GMAC_STAT("tx_timestamp_packets", tx_timestamp_packets),
+ GMAC_STAT("tx_lpi_microseconds", txlpiusec),
+ GMAC_STAT("tx_lpi_transition", txlpitran),
+
+ /* MMC RX counters */
+ GMAC_STAT("rx_bytes", rxoctetcount_gb),
+ GMAC_STAT("rx_bytes_good", rxoctetcount_g),
+ GMAC_STAT("rx_packets", rxframecount_gb),
+ GMAC_STAT("rx_unicast_packets_good", rxunicastframes_g),
+ GMAC_STAT("rx_broadcast_packets_good", rxbroadcastframes_g),
+ GMAC_STAT("rx_multicast_packets_good", rxmulticastframes_g),
+ GMAC_STAT("rx_vlan_packets", rxvlanframes_gb),
+ GMAC_STAT("rx_64_byte_packets", rx64octets_gb),
+ GMAC_STAT("rx_65_to_127_byte_packets", rx65to127octets_gb),
+ GMAC_STAT("rx_128_to_255_byte_packets", rx128to255octets_gb),
+ GMAC_STAT("rx_256_to_511_byte_packets", rx256to511octets_gb),
+ GMAC_STAT("rx_512_to_1023_byte_packets", rx512to1023octets_gb),
+ GMAC_STAT("rx_1024_to_max_byte_packets", rx1024tomaxoctets_gb),
+ GMAC_STAT("rx_undersize_packets_good", rxundersize_g),
+ GMAC_STAT("rx_oversize_packets_good", rxoversize_g),
+ GMAC_STAT("rx_crc_errors", rxcrcerror),
+ GMAC_STAT("rx_alignment_error_packets", rxalignerror),
+ GMAC_STAT("rx_crc_errors_small_packets", rxrunterror),
+ GMAC_STAT("rx_crc_errors_giant_packets", rxjabbererror),
+ GMAC_STAT("rx_length_errors", rxlengtherror),
+ GMAC_STAT("rx_out_of_range_errors", rxoutofrangetype),
+ GMAC_STAT("rx_fifo_overflow_errors", rxfifooverflow),
+ GMAC_STAT("rx_watchdog_errors", rxwatchdogerror),
+ GMAC_STAT("rx_receive_errors", rxreceiveerror),
+ GMAC_STAT("rx_control_packets_good", rxctrlframes_g),
+ GMAC_STAT("rx_pause_frames", rxpauseframes),
+ GMAC_STAT("rx_timestamp_packets", rx_timestamp_packets),
+ GMAC_STAT("rx_lpi_microseconds", rxlpiusec),
+ GMAC_STAT("rx_lpi_transition", rxlpitran),
+
+ /* MMC RXIPC counters */
+ GMAC_STAT("rx_ipv4_good_packets", rxipv4_g),
+ GMAC_STAT("rx_ipv4_header_error_packets", rxipv4hderr),
+ GMAC_STAT("rx_ipv4_no_payload_packets", rxipv4nopay),
+ GMAC_STAT("rx_ipv4_fragmented_packets", rxipv4frag),
+ GMAC_STAT("rx_ipv4_udp_csum_dis_packets", rxipv4udsbl),
+ GMAC_STAT("rx_ipv6_good_packets", rxipv6octets_g),
+ GMAC_STAT("rx_ipv6_header_error_packets", rxipv6hderroctets),
+ GMAC_STAT("rx_ipv6_no_payload_packets", rxipv6nopayoctets),
+ GMAC_STAT("rx_udp_good_packets", rxudp_g),
+ GMAC_STAT("rx_udp_error_packets", rxudperr),
+ GMAC_STAT("rx_tcp_good_packets", rxtcp_g),
+ GMAC_STAT("rx_tcp_error_packets", rxtcperr),
+ GMAC_STAT("rx_icmp_good_packets", rxicmp_g),
+ GMAC_STAT("rx_icmp_error_packets", rxicmperr),
+ GMAC_STAT("rx_ipv4_good_bytes", rxipv4octets_g),
+ GMAC_STAT("rx_ipv4_header_error_bytes", rxipv4hderroctets),
+ GMAC_STAT("rx_ipv4_no_payload_bytes", rxipv4nopayoctets),
+ GMAC_STAT("rx_ipv4_fragmented_bytes", rxipv4fragoctets),
+ GMAC_STAT("rx_ipv4_udp_csum_dis_bytes", rxipv4udsbloctets),
+ GMAC_STAT("rx_ipv6_good_bytes", rxipv6_g),
+ GMAC_STAT("rx_ipv6_header_error_bytes", rxipv6hderr),
+ GMAC_STAT("rx_ipv6_no_payload_bytes", rxipv6nopay),
+ GMAC_STAT("rx_udp_good_bytes", rxudpoctets_g),
+ GMAC_STAT("rx_udp_error_bytes", rxudperroctets),
+ GMAC_STAT("rx_tcp_good_bytes", rxtcpoctets_g),
+ GMAC_STAT("rx_tcp_error_bytes", rxtcperroctets),
+ GMAC_STAT("rx_icmp_good_bytes", rxicmpoctets_g),
+ GMAC_STAT("rx_icmp_error_bytes", rxicmperroctets),
+
+ /* Extra counters */
+ GMAC_STAT("tx_tso_packets", tx_tso_packets),
+ GMAC_STAT("rx_split_header_packets", rx_split_header_packets),
+ GMAC_STAT("tx_process_stopped", tx_process_stopped),
+ GMAC_STAT("rx_process_stopped", rx_process_stopped),
+ GMAC_STAT("tx_buffer_unavailable", tx_buffer_unavailable),
+ GMAC_STAT("rx_buffer_unavailable", rx_buffer_unavailable),
+ GMAC_STAT("fatal_bus_error", fatal_bus_error),
+ GMAC_STAT("tx_vlan_packets", tx_vlan_packets),
+ GMAC_STAT("rx_vlan_packets", rx_vlan_packets),
+ GMAC_STAT("napi_poll_isr", napi_poll_isr),
+ GMAC_STAT("napi_poll_txtimer", napi_poll_txtimer),
+};
+
+#define GMAC_STATS_COUNT ARRAY_SIZE(gmac_gstring_stats)
+
+static void gmac_ethtool_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ u32 ver = pdata->hw_feat.version;
+ u32 snpsver, userver;
+
+ strlcpy(drvinfo->driver, pdata->drv_name, sizeof(drvinfo->driver));
+ strlcpy(drvinfo->version, pdata->drv_ver, sizeof(drvinfo->version));
+ strlcpy(drvinfo->bus_info, dev_name(pdata->dev),
+ sizeof(drvinfo->bus_info));
+ /* S|SNPSVER: Synopsys-defined Version
+ * U|USERVER: User-defined Version
+ */
+ snpsver = GMAC_GET_REG_BITS(ver,
+ MAC_VR_SNPSVER_POS,
+ MAC_VR_SNPSVER_LEN);
+ userver = GMAC_GET_REG_BITS(ver,
+ MAC_VR_USERVER_POS,
+ MAC_VR_USERVER_LEN);
+ snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
+ "S.U: %x.%x", snpsver, userver);
+}
+
+static u32 gmac_ethtool_get_msglevel(struct net_device *netdev)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+
+ return pdata->msg_enable;
+}
+
+static void gmac_ethtool_set_msglevel(struct net_device *netdev,
+ u32 msglevel)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+
+ pdata->msg_enable = msglevel;
+}
+
+static void gmac_ethtool_get_channels(struct net_device *netdev,
+ struct ethtool_channels *channel)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+
+ channel->max_rx = GMAC_MAX_DMA_CHANNELS;
+ channel->max_tx = GMAC_MAX_DMA_CHANNELS;
+ channel->rx_count = pdata->rx_q_count;
+ channel->tx_count = pdata->tx_q_count;
+}
+
+static int gmac_ethtool_get_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ec)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+
+ memset(ec, 0, sizeof(struct ethtool_coalesce));
+ ec->rx_coalesce_usecs = pdata->rx_usecs;
+ ec->rx_max_coalesced_frames = pdata->rx_frames;
+ ec->tx_max_coalesced_frames = pdata->tx_frames;
+
+ return 0;
+}
+
+static int gmac_ethtool_set_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ec)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ unsigned int rx_frames, rx_riwt, rx_usecs;
+ unsigned int tx_frames;
+
+ /* Check for not supported parameters */
+ if (ec->rx_coalesce_usecs_irq || ec->rx_max_coalesced_frames_irq ||
+ ec->tx_coalesce_usecs || ec->tx_coalesce_usecs_high ||
+ ec->tx_max_coalesced_frames_irq || ec->tx_coalesce_usecs_irq ||
+ ec->stats_block_coalesce_usecs || ec->pkt_rate_low ||
+ ec->use_adaptive_rx_coalesce || ec->use_adaptive_tx_coalesce ||
+ ec->rx_max_coalesced_frames_low || ec->rx_coalesce_usecs_low ||
+ ec->tx_coalesce_usecs_low || ec->tx_max_coalesced_frames_low ||
+ ec->pkt_rate_high || ec->rx_coalesce_usecs_high ||
+ ec->rx_max_coalesced_frames_high ||
+ ec->tx_max_coalesced_frames_high ||
+ ec->rate_sample_interval)
+ return -EOPNOTSUPP;
+
+ rx_usecs = ec->rx_coalesce_usecs;
+ rx_riwt = hw_ops->usec_to_riwt(pdata, rx_usecs);
+ rx_frames = ec->rx_max_coalesced_frames;
+ tx_frames = ec->tx_max_coalesced_frames;
+
+ if (rx_riwt > GMAC_MAX_DMA_RIWT ||
+ rx_riwt < GMAC_MIN_DMA_RIWT ||
+ rx_frames > pdata->rx_desc_count)
+ return -EINVAL;
+
+ if (tx_frames > pdata->tx_desc_count)
+ return -EINVAL;
+
+ pdata->rx_riwt = rx_riwt;
+ pdata->rx_usecs = rx_usecs;
+ pdata->rx_frames = rx_frames;
+ hw_ops->config_rx_coalesce(pdata);
+
+ pdata->tx_frames = tx_frames;
+ hw_ops->config_tx_coalesce(pdata);
+
+ return 0;
+}
+
+static void gmac_ethtool_get_strings(struct net_device *netdev,
+ u32 stringset, u8 *data)
+{
+ int i;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ for (i = 0; i < GMAC_STATS_COUNT; i++) {
+ memcpy(data, gmac_gstring_stats[i].stat_string,
+ ETH_GSTRING_LEN);
+ data += ETH_GSTRING_LEN;
+ }
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+}
+
+static int gmac_ethtool_get_sset_count(struct net_device *netdev,
+ int stringset)
+{
+ int ret;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ ret = GMAC_STATS_COUNT;
+ break;
+
+ default:
+ ret = -EOPNOTSUPP;
+ }
+
+ return ret;
+}
+
+static void gmac_ethtool_get_ethtool_stats(struct net_device *netdev,
+ struct ethtool_stats *stats,
+ u64 *data)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ u8 *stat;
+ int i;
+
+ pdata->hw_ops.read_mmc_stats(pdata);
+ for (i = 0; i < GMAC_STATS_COUNT; i++) {
+ stat = (u8 *)pdata + gmac_gstring_stats[i].stat_offset;
+ *data++ = *(u64 *)stat;
+ }
+}
+
+static int gmac_get_ts_info(struct net_device *dev,
+ struct ethtool_ts_info *info)
+{
+ struct gmac_pdata *pdata = netdev_priv(dev);
+
+ if (pdata->hw_feat.ts_src) {
+ info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
+ SOF_TIMESTAMPING_TX_HARDWARE |
+ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_RX_HARDWARE |
+ SOF_TIMESTAMPING_SOFTWARE |
+ SOF_TIMESTAMPING_RAW_HARDWARE;
+
+ if (pdata->ptp_clock)
+ info->phc_index = ptp_clock_index(pdata->ptp_clock);
+
+ info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
+
+ info->rx_filters = ((1 << HWTSTAMP_FILTER_NONE) |
+ (1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT) |
+ (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
+ (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
+ (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
+ (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
+ (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
+ (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
+ (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
+ (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
+ (1 << HWTSTAMP_FILTER_ALL));
+ return 0;
+ } else {
+ return ethtool_op_get_ts_info(dev, info);
+ }
+}
+
+static const struct ethtool_ops gmac_ethtool_ops = {
+ .get_drvinfo = gmac_ethtool_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+ .get_msglevel = gmac_ethtool_get_msglevel,
+ .set_msglevel = gmac_ethtool_set_msglevel,
+ .get_channels = gmac_ethtool_get_channels,
+ .get_coalesce = gmac_ethtool_get_coalesce,
+ .set_coalesce = gmac_ethtool_set_coalesce,
+ .get_strings = gmac_ethtool_get_strings,
+ .get_sset_count = gmac_ethtool_get_sset_count,
+ .get_ethtool_stats = gmac_ethtool_get_ethtool_stats,
+ .get_ts_info = gmac_get_ts_info,
+};
+
+const struct ethtool_ops *gmac_get_ethtool_ops(void)
+{
+ return &gmac_ethtool_ops;
+}
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-hw.c b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-hw.c
new file mode 100644
index 0000000..82de2a57
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-hw.c
@@ -0,0 +1,3446 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2018 MediaTek Inc.
+#include <linux/phy.h>
+#include <linux/mdio.h>
+#include <linux/bitrev.h>
+#include <linux/crc32.h>
+#include <linux/dcbnl.h>
+
+#include "mtk-gmac.h"
+
+static int gmac_tx_complete(struct gmac_dma_desc *dma_desc)
+{
+ return !GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_OWN_POS,
+ TX_NORMAL_DESC3_OWN_LEN);
+}
+
+static int gmac_disable_rx_csum(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_MCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_IPC_POS,
+ MAC_MCR_IPC_LEN, 0);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ return 0;
+}
+
+static int gmac_enable_rx_csum(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_MCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_IPC_POS,
+ MAC_MCR_IPC_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ return 0;
+}
+
+static int gmac_set_mac_address(struct gmac_pdata *pdata,
+ u8 *addr,
+ unsigned int idx)
+{
+ unsigned int mac_addr_hi, mac_addr_lo;
+
+ mac_addr_hi = (addr[5] << 8) | (addr[4] << 0);
+ mac_addr_lo = (addr[3] << 24) | (addr[2] << 16) |
+ (addr[1] << 8) | (addr[0] << 0);
+ mac_addr_hi = GMAC_SET_REG_BITS(mac_addr_hi,
+ MAC_ADDR_HR_AE_POS,
+ MAC_ADDR_HR_AE_LEN,
+ 1);
+
+ GMAC_IOWRITE(pdata, MAC_ADDR_HR(idx), mac_addr_hi);
+ GMAC_IOWRITE(pdata, MAC_ADDR_LR(idx), mac_addr_lo);
+
+ return 0;
+}
+
+static void gmac_set_mac_reg(struct gmac_pdata *pdata,
+ struct netdev_hw_addr *ha,
+ unsigned int idx)
+{
+ unsigned int mac_addr_hi, mac_addr_lo;
+ u8 *mac_addr;
+
+ mac_addr_lo = 0;
+ mac_addr_hi = 0;
+
+ if (ha) {
+ mac_addr = (u8 *)&mac_addr_lo;
+ mac_addr[0] = ha->addr[0];
+ mac_addr[1] = ha->addr[1];
+ mac_addr[2] = ha->addr[2];
+ mac_addr[3] = ha->addr[3];
+ mac_addr = (u8 *)&mac_addr_hi;
+ mac_addr[0] = ha->addr[4];
+ mac_addr[1] = ha->addr[5];
+
+ netif_dbg(pdata, drv, pdata->netdev,
+ "adding mac address %pM at %#x\n",
+ ha->addr, idx);
+
+ mac_addr_hi = GMAC_SET_REG_BITS(mac_addr_hi,
+ MAC_ADDR_HR_AE_POS,
+ MAC_ADDR_HR_AE_LEN,
+ 1);
+ }
+
+ GMAC_IOWRITE(pdata, MAC_ADDR_HR(idx), mac_addr_hi);
+ GMAC_IOWRITE(pdata, MAC_ADDR_LR(idx), mac_addr_lo);
+}
+
+static int gmac_enable_rx_vlan_stripping(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_VLANTR);
+ /* Put the VLAN tag in the Rx descriptor */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_EVLRXS_POS,
+ MAC_VLANTR_EVLRXS_LEN, 1);
+ /* Don't check the VLAN type */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_DOVLTC_POS,
+ MAC_VLANTR_DOVLTC_LEN, 1);
+ /* Check only C-TAG (0x8100) packets */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_ERSVLM_POS,
+ MAC_VLANTR_ERSVLM_LEN, 0);
+ /* Don't consider an S-TAG (0x88A8) packet as a VLAN packet */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_ESVL_POS,
+ MAC_VLANTR_ESVL_LEN, 0);
+ /* Enable VLAN tag stripping */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_EVLS_POS,
+ MAC_VLANTR_EVLS_LEN, 0x3);
+ GMAC_IOWRITE(pdata, MAC_VLANTR, regval);
+
+ return 0;
+}
+
+static int gmac_disable_rx_vlan_stripping(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_VLANTR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_EVLS_POS,
+ MAC_VLANTR_EVLS_LEN, 0);
+ GMAC_IOWRITE(pdata, MAC_VLANTR, regval);
+
+ return 0;
+}
+
+static int gmac_enable_rx_vlan_filtering(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_PFR);
+ /* Enable VLAN filtering */
+ regval = GMAC_SET_REG_BITS(regval, MAC_PFR_VTFE_POS,
+ MAC_PFR_VTFE_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_PFR, regval);
+
+ regval = GMAC_IOREAD(pdata, MAC_VLANTR);
+ /* Enable VLAN Hash Table filtering */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_VTHM_POS,
+ MAC_VLANTR_VTHM_LEN, 1);
+ /* Disable VLAN tag inverse matching */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_VTIM_POS,
+ MAC_VLANTR_VTIM_LEN, 0);
+ /* Only filter on the lower 12-bits of the VLAN tag */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_ETV_POS,
+ MAC_VLANTR_ETV_LEN, 1);
+ /* In order for the VLAN Hash Table filtering to be effective,
+ * the VLAN tag identifier in the VLAN Tag Register must not
+ * be zero. Set the VLAN tag identifier to "1" to enable the
+ * VLAN Hash Table filtering. This implies that a VLAN tag of
+ * 1 will always pass filtering.
+ */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_VL_POS,
+ MAC_VLANTR_VL_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_VLANTR, regval);
+
+ return 0;
+}
+
+static int gmac_disable_rx_vlan_filtering(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_PFR);
+ /* Disable VLAN filtering */
+ regval = GMAC_SET_REG_BITS(regval, MAC_PFR_VTFE_POS,
+ MAC_PFR_VTFE_LEN, 0);
+ GMAC_IOWRITE(pdata, MAC_PFR, regval);
+
+ return 0;
+}
+
+static u32 gmac_vid_crc32_le(__le16 vid_le)
+{
+ unsigned char *data = (unsigned char *)&vid_le;
+ unsigned char data_byte = 0;
+ u32 poly = 0xedb88320;
+ u32 crc = ~0;
+ u32 temp = 0;
+ int i, bits;
+
+ bits = get_bitmask_order(VLAN_VID_MASK);
+ for (i = 0; i < bits; i++) {
+ if ((i % 8) == 0)
+ data_byte = data[i / 8];
+
+ temp = ((crc & 1) ^ data_byte) & 1;
+ crc >>= 1;
+ data_byte >>= 1;
+
+ if (temp)
+ crc ^= poly;
+ }
+
+ return crc;
+}
+
+static int gmac_update_vlan_hash_table(struct gmac_pdata *pdata)
+{
+ u16 vlan_hash_table = 0;
+ __le16 vid_le;
+ u32 regval;
+ u32 crc;
+ u16 vid;
+
+ /* Generate the VLAN Hash Table value */
+ for_each_set_bit(vid, pdata->active_vlans, VLAN_N_VID) {
+ /* Get the CRC32 value of the VLAN ID */
+ vid_le = cpu_to_le16(vid);
+ crc = bitrev32(~gmac_vid_crc32_le(vid_le)) >> 28;
+
+ vlan_hash_table |= (1 << crc);
+ }
+
+ regval = GMAC_IOREAD(pdata, MAC_VLANHTR);
+ /* Set the VLAN Hash Table filtering register */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANHTR_VLHT_POS,
+ MAC_VLANHTR_VLHT_LEN, vlan_hash_table);
+ GMAC_IOWRITE(pdata, MAC_VLANHTR, regval);
+
+ return 0;
+}
+
+static void gmac_update_vlan_id(struct gmac_pdata *pdata,
+ u16 vid,
+ unsigned int enable,
+ unsigned int ofs)
+{
+ u32 regval;
+
+ /* Set the VLAN filtering register */
+ regval = GMAC_IOREAD(pdata, MAC_VLANTFR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTFR_VID_POS,
+ MAC_VLANTFR_VID_LEN, vid);
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTFR_VEN_POS,
+ MAC_VLANTFR_VEN_LEN, enable);
+ GMAC_IOWRITE(pdata, MAC_VLANTFR, regval);
+
+ /* Set the VLAN filtering register */
+ regval = GMAC_IOREAD(pdata, MAC_VLANTR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_OFS_POS,
+ MAC_VLANTR_OFS_LEN, ofs);
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_CT_POS,
+ MAC_VLANTR_CT_POS, 0);
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANTR_OB_POS,
+ MAC_VLANTR_OB_POS, 1);
+ GMAC_IOWRITE(pdata, MAC_VLANTR, regval);
+
+ ofs++;
+}
+
+static int gmac_update_vlan(struct gmac_pdata *pdata)
+{
+ u32 ofs = 0;
+ u16 vid;
+
+ /* By default, receive only VLAN pkt with VID = 1
+ * because writing 0 will pass all VLAN pkt
+ * disable check vlan tag
+ */
+ for (ofs = 0; ofs < pdata->vlan_weight; ofs++)
+ gmac_update_vlan_id(pdata, 1, 0, ofs);
+
+ ofs = 0;
+ /* Generate the VLAN Hash Table value */
+ for_each_set_bit(vid, pdata->active_vlans, VLAN_N_VID) {
+ gmac_update_vlan_id(pdata, vid, 1, ofs);
+ ofs++;
+ }
+
+ return 0;
+}
+
+static int gmac_set_promiscuous_mode(struct gmac_pdata *pdata,
+ unsigned int enable)
+{
+ unsigned int val = enable ? 1 : 0;
+ u32 regval;
+
+ regval = GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_PFR),
+ MAC_PFR_PR_POS, MAC_PFR_PR_LEN);
+ if (regval == val)
+ return 0;
+
+ netif_dbg(pdata, drv, pdata->netdev, "%s promiscuous mode\n",
+ enable ? "entering" : "leaving");
+
+ regval = GMAC_IOREAD(pdata, MAC_PFR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_PFR_PR_POS,
+ MAC_PFR_PR_LEN, val);
+ GMAC_IOWRITE(pdata, MAC_PFR, regval);
+
+ /* Hardware will still perform VLAN filtering in promiscuous mode */
+ if (enable) {
+ gmac_disable_rx_vlan_filtering(pdata);
+ } else {
+ if (pdata->netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
+ gmac_enable_rx_vlan_filtering(pdata);
+ }
+
+ return 0;
+}
+
+static int gmac_set_all_multicast_mode(struct gmac_pdata *pdata,
+ unsigned int enable)
+{
+ unsigned int val = enable ? 1 : 0;
+ u32 regval;
+
+ regval = GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_PFR),
+ MAC_PFR_PM_POS, MAC_PFR_PM_LEN);
+ if (regval == val)
+ return 0;
+
+ netif_dbg(pdata, drv, pdata->netdev, "%s allmulti mode\n",
+ enable ? "entering" : "leaving");
+
+ regval = GMAC_IOREAD(pdata, MAC_PFR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_PFR_PM_POS,
+ MAC_PFR_PM_LEN, val);
+ GMAC_IOWRITE(pdata, MAC_PFR, regval);
+
+ return 0;
+}
+
+static void gmac_set_mac_addn_addrs(struct gmac_pdata *pdata)
+{
+ struct net_device *netdev = pdata->netdev;
+ struct netdev_hw_addr *ha;
+ unsigned int addn_macs;
+ unsigned int addr_idx;
+
+ addr_idx = 1;
+ addn_macs = pdata->hw_feat.addn_mac;
+
+ if (netdev_uc_count(netdev) > addn_macs) {
+ gmac_set_promiscuous_mode(pdata, 1);
+ } else {
+ netdev_for_each_uc_addr(ha, netdev) {
+ gmac_set_mac_reg(pdata, ha, addr_idx);
+ addr_idx++;
+ addn_macs--;
+ }
+
+ if (netdev_mc_count(netdev) > addn_macs) {
+ gmac_set_all_multicast_mode(pdata, 1);
+ } else {
+ netdev_for_each_mc_addr(ha, netdev) {
+ gmac_set_mac_reg(pdata, ha, addr_idx);
+ addr_idx++;
+ addn_macs--;
+ }
+ }
+ }
+
+ /* Clear remaining additional MAC address entries */
+ while (addn_macs--) {
+ gmac_set_mac_reg(pdata, NULL, addr_idx);
+ addr_idx++;
+ }
+}
+
+static void gmac_set_mac_hash_table(struct gmac_pdata *pdata)
+{
+ unsigned int hash_table_shift, hash_table_count;
+ u32 hash_table[GMAC_MAC_HASH_TABLE_SIZE];
+ struct net_device *netdev = pdata->netdev;
+ struct netdev_hw_addr *ha;
+ unsigned int i;
+ u32 crc;
+
+ hash_table_shift = 26 - (pdata->hw_feat.hash_table_size >> 7);
+ hash_table_count = pdata->hw_feat.hash_table_size / 32;
+ memset(hash_table, 0, sizeof(hash_table));
+
+ /* Build the MAC Hash Table register values */
+ netdev_for_each_uc_addr(ha, netdev) {
+ crc = bitrev32(~crc32_le(~0, ha->addr, ETH_ALEN));
+ crc >>= hash_table_shift;
+ hash_table[crc >> 5] |= (1 << (crc & 0x1f));
+ }
+
+ netdev_for_each_mc_addr(ha, netdev) {
+ crc = bitrev32(~crc32_le(~0, ha->addr, ETH_ALEN));
+ crc >>= hash_table_shift;
+ hash_table[crc >> 5] |= (1 << (crc & 0x1f));
+ }
+
+ /* Set the MAC Hash Table registers */
+ for (i = 0; i < hash_table_count; i++)
+ GMAC_IOWRITE(pdata, MAC_HTR(i), hash_table[i]);
+}
+
+static int gmac_add_mac_addresses(struct gmac_pdata *pdata)
+{
+ if (pdata->hw_feat.hash_table_size)
+ gmac_set_mac_hash_table(pdata);
+ else
+ gmac_set_mac_addn_addrs(pdata);
+
+ return 0;
+}
+
+static void gmac_config_mac_address(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ gmac_set_mac_address(pdata, pdata->netdev->dev_addr, 0);
+
+ /* Filtering is done using perfect filtering and hash filtering */
+ if (pdata->hw_feat.hash_table_size) {
+ regval = GMAC_IOREAD(pdata, MAC_PFR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_PFR_HPF_POS,
+ MAC_PFR_HPF_LEN, 1);
+ regval = GMAC_SET_REG_BITS(regval, MAC_PFR_HUC_POS,
+ MAC_PFR_HUC_LEN, 1);
+ regval = GMAC_SET_REG_BITS(regval, MAC_PFR_HMC_POS,
+ MAC_PFR_HMC_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_PFR, regval);
+ }
+}
+
+static void gmac_config_jumbo_disable(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_MCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_JE_POS,
+ MAC_MCR_JE_LEN, 0);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+}
+
+static void gmac_config_checksum_offload(struct gmac_pdata *pdata)
+{
+ if (pdata->netdev->features & NETIF_F_RXCSUM)
+ gmac_enable_rx_csum(pdata);
+ else
+ gmac_disable_rx_csum(pdata);
+}
+
+static void gmac_config_vlan_support(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_VLANIR);
+ /* Indicate that VLAN Tx CTAGs come from context descriptors */
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANIR_CSVL_POS,
+ MAC_VLANIR_CSVL_LEN, 0);
+ regval = GMAC_SET_REG_BITS(regval, MAC_VLANIR_VLTI_POS,
+ MAC_VLANIR_VLTI_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_VLANIR, regval);
+
+ /* Set the current VLAN Hash Table register value */
+ gmac_update_vlan_hash_table(pdata);
+
+ if (pdata->netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
+ gmac_enable_rx_vlan_filtering(pdata);
+ else
+ gmac_disable_rx_vlan_filtering(pdata);
+
+ if (pdata->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
+ gmac_enable_rx_vlan_stripping(pdata);
+ else
+ gmac_disable_rx_vlan_stripping(pdata);
+}
+
+static int gmac_config_rx_mode(struct gmac_pdata *pdata)
+{
+ struct net_device *netdev = pdata->netdev;
+ unsigned int pr_mode, am_mode;
+
+ pr_mode = ((netdev->flags & IFF_PROMISC) != 0);
+ am_mode = ((netdev->flags & IFF_ALLMULTI) != 0);
+
+ gmac_set_promiscuous_mode(pdata, pr_mode);
+ gmac_set_all_multicast_mode(pdata, am_mode);
+
+ gmac_add_mac_addresses(pdata);
+
+ return 0;
+}
+
+static void gmac_prepare_tx_stop(struct gmac_pdata *pdata,
+ struct gmac_channel *channel)
+{
+ unsigned int tx_dsr, tx_pos, tx_qidx;
+ unsigned long tx_timeout;
+ unsigned int tx_status;
+
+ /* Calculate the status register to read and the position within */
+ if (channel->queue_index < DMA_DSRX_FIRST_QUEUE) {
+ tx_dsr = DMA_DSR0;
+ tx_pos = (channel->queue_index * DMA_DSR_Q_LEN) +
+ DMA_DSR0_TPS_START;
+ } else {
+ tx_qidx = channel->queue_index - DMA_DSRX_FIRST_QUEUE;
+
+ tx_dsr = DMA_DSR1 + ((tx_qidx / DMA_DSRX_QPR) * DMA_DSRX_INC);
+ tx_pos = ((tx_qidx % DMA_DSRX_QPR) * DMA_DSR_Q_LEN) +
+ DMA_DSRX_TPS_START;
+ }
+
+ /* The Tx engine cannot be stopped if it is actively processing
+ * descriptors. Wait for the Tx engine to enter the stopped or
+ * suspended state. Don't wait forever though...
+ */
+ tx_timeout = jiffies + (GMAC_DMA_STOP_TIMEOUT * HZ);
+ while (time_before(jiffies, tx_timeout)) {
+ tx_status = GMAC_IOREAD(pdata, tx_dsr);
+ tx_status = GMAC_GET_REG_BITS(tx_status, tx_pos,
+ DMA_DSR_TPS_LEN);
+ if (tx_status == tx_stopped ||
+ tx_status == tx_suspended)
+ break;
+
+ usleep_range(500, 1000);
+ }
+
+ if (!time_before(jiffies, tx_timeout))
+ netdev_info(pdata->netdev,
+ "timed out waiting for Tx DMA channel %u to stop\n",
+ channel->queue_index);
+}
+
+static void gmac_enable_tx(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ /* Enable each Tx DMA channel */
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->tx_ring)
+ break;
+
+ regval = GMAC_IOREAD(pdata, DMA_CH_TCR(i));
+ regval = GMAC_SET_REG_BITS(regval, DMA_CH_TCR_ST_POS,
+ DMA_CH_TCR_ST_LEN, 1);
+ GMAC_IOWRITE(pdata, DMA_CH_TCR(i), regval);
+ }
+
+ /* Enable each Tx queue */
+ for (i = 0; i < pdata->tx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_TQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval, MTL_Q_TQOMR_TXQEN_POS,
+ MTL_Q_TQOMR_TXQEN_LEN,
+ MTL_Q_ENABLED);
+ GMAC_IOWRITE(pdata, MTL_Q_TQOMR(i), regval);
+ }
+
+ /* Enable MAC Tx */
+ regval = GMAC_IOREAD(pdata, MAC_MCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_TE_POS,
+ MAC_MCR_TE_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+}
+
+static void gmac_disable_tx(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ /* Disable each Tx DMA channel */
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->tx_ring)
+ break;
+ /* Issue Tx dma stop command */
+ regval = GMAC_IOREAD(pdata, DMA_CH_TCR(i));
+ regval = GMAC_SET_REG_BITS(regval, DMA_CH_TCR_ST_POS,
+ DMA_CH_TCR_ST_LEN, 0);
+ GMAC_IOWRITE(pdata, DMA_CH_TCR(i), regval);
+ /* Waiting for Tx DMA channel stop */
+ gmac_prepare_tx_stop(pdata, channel);
+ }
+
+ /* Disable MAC Tx */
+ regval = GMAC_IOREAD(pdata, MAC_MCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_TE_POS,
+ MAC_MCR_TE_LEN, 0);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ /* Disable each Tx queue */
+ for (i = 0; i < pdata->tx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_TQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval, MTL_Q_TQOMR_TXQEN_POS,
+ MTL_Q_TQOMR_TXQEN_LEN, 0);
+ GMAC_IOWRITE(pdata, MTL_Q_TQOMR(i), regval);
+ }
+}
+
+static void gmac_prepare_rx_stop(struct gmac_pdata *pdata,
+ struct gmac_channel *channel)
+{
+ unsigned int rx_dsr, rx_pos, rx_qidx;
+ unsigned long rx_timeout;
+ unsigned int rx_status;
+
+ /* Calculate the status register to read and the position within */
+ if (channel->queue_index < DMA_DSRX_FIRST_QUEUE) {
+ rx_dsr = DMA_DSR0;
+ rx_pos = (channel->queue_index * DMA_DSR_Q_LEN) +
+ DMA_DSR0_RPS_START;
+ } else {
+ rx_qidx = channel->queue_index - DMA_DSRX_FIRST_QUEUE;
+
+ rx_dsr = DMA_DSR1 + ((rx_qidx / DMA_DSRX_QPR) * DMA_DSRX_INC);
+ rx_pos = ((rx_qidx % DMA_DSRX_QPR) * DMA_DSR_Q_LEN) +
+ DMA_DSRX_RPS_START;
+ }
+
+ /* The Rx engine cannot be stopped if it is actively processing
+ * descriptors. Wait for the Rx engine to enter the stopped or
+ * suspended, waiting state. Don't wait forever though...
+ */
+ rx_timeout = jiffies + (GMAC_DMA_STOP_TIMEOUT * HZ);
+ while (time_before(jiffies, rx_timeout)) {
+ rx_status = GMAC_IOREAD(pdata, rx_dsr);
+ rx_status = GMAC_GET_REG_BITS(rx_status, rx_pos,
+ DMA_DSR_RPS_LEN);
+ if (rx_status == rx_stopped ||
+ rx_status == rx_suspended ||
+ rx_status == rx_running_waiting)
+ break;
+
+ usleep_range(500, 1000);
+ }
+
+ if (!time_before(jiffies, rx_timeout))
+ netdev_info(pdata->netdev,
+ "timed out waiting for Rx queue %u to empty\n",
+ channel->queue_index);
+}
+
+static void gmac_enable_rx(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int regval, i;
+
+ /* Enable each Rx DMA channel */
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->rx_ring)
+ break;
+
+ regval = GMAC_IOREAD(pdata, DMA_CH_RCR(i));
+ regval = GMAC_SET_REG_BITS(regval, DMA_CH_RCR_SR_POS,
+ DMA_CH_RCR_SR_LEN, 1);
+ GMAC_IOWRITE(pdata, DMA_CH_RCR(i), regval);
+ }
+
+ /* Enable each Rx queue */
+ regval = 0;
+ for (i = 0; i < pdata->rx_q_count; i++)
+ regval |= (0x02 << (i << 1));
+
+ GMAC_IOWRITE(pdata, MAC_RQC0R, regval);
+
+ /* Enable MAC Rx */
+ regval = GMAC_IOREAD(pdata, MAC_MCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_CST_POS,
+ MAC_MCR_CST_LEN, 1);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_ACS_POS,
+ MAC_MCR_ACS_LEN, 1);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_RE_POS,
+ MAC_MCR_RE_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+}
+
+static void gmac_disable_rx(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ /* Disable MAC Rx */
+ regval = GMAC_IOREAD(pdata, MAC_MCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_CST_POS,
+ MAC_MCR_CST_LEN, 0);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_ACS_POS,
+ MAC_MCR_ACS_LEN, 0);
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_RE_POS,
+ MAC_MCR_RE_LEN, 0);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ /* Disable each Rx queue */
+ GMAC_IOWRITE(pdata, MAC_RQC0R, 0);
+
+ /* Disable each Rx DMA channel */
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->rx_ring)
+ break;
+
+ regval = GMAC_IOREAD(pdata, DMA_CH_RCR(i));
+ regval = GMAC_SET_REG_BITS(regval, DMA_CH_RCR_SR_POS,
+ DMA_CH_RCR_SR_LEN, 0);
+ GMAC_IOWRITE(pdata, DMA_CH_RCR(i), regval);
+
+ /* Waiting for Rx DMA channel stop */
+ gmac_prepare_rx_stop(pdata, channel);
+ }
+}
+
+static void gmac_tx_start_xmit(struct gmac_channel *channel,
+ struct gmac_ring *ring)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_desc_data *desc_data;
+ unsigned int q = channel->queue_index;
+
+ /* Make sure everything is written before the register write */
+ wmb();
+
+ /* Issue a poll command to Tx DMA by writing address
+ * of next immediate free descriptor
+ */
+ desc_data = GMAC_GET_DESC_DATA(ring, ring->cur);
+ GMAC_IOWRITE(pdata, DMA_CH_TDTR(q),
+ lower_32_bits(desc_data->dma_desc_addr));
+
+ /* Start the Tx timer */
+ if (pdata->tx_usecs && !channel->tx_timer_active) {
+ channel->tx_timer_active = 1;
+ mod_timer(&channel->tx_timer,
+ jiffies + usecs_to_jiffies(pdata->tx_usecs));
+ }
+
+ ring->tx.xmit_more = 0;
+}
+
+static void gmac_dev_xmit(struct gmac_channel *channel)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_ring *ring = channel->tx_ring;
+ unsigned int tso_context, vlan_context;
+ struct gmac_desc_data *desc_data;
+ struct gmac_dma_desc *dma_desc;
+ struct gmac_pkt_info *pkt_info;
+ unsigned int csum, tso, vlan;
+ int start_index = ring->cur;
+ int cur_index = ring->cur;
+ unsigned int tx_set_ic;
+ int i;
+
+ pkt_info = &ring->pkt_info;
+ csum = GMAC_GET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_CSUM_ENABLE_POS,
+ TX_PACKET_ATTRIBUTES_CSUM_ENABLE_LEN);
+ tso = GMAC_GET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_TSO_ENABLE_POS,
+ TX_PACKET_ATTRIBUTES_TSO_ENABLE_LEN);
+ vlan = GMAC_GET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_VLAN_CTAG_POS,
+ TX_PACKET_ATTRIBUTES_VLAN_CTAG_LEN);
+
+ if (tso && pkt_info->mss != ring->tx.cur_mss)
+ tso_context = 1;
+ else
+ tso_context = 0;
+
+ if (vlan && pkt_info->vlan_ctag != ring->tx.cur_vlan_ctag)
+ vlan_context = 1;
+ else
+ vlan_context = 0;
+
+ /* Determine if an interrupt should be generated for this Tx:
+ * Interrupt:
+ * - Tx frame count exceeds the frame count setting
+ * - Addition of Tx frame count to the frame count since the
+ * last interrupt was set exceeds the frame count setting
+ * No interrupt:
+ * - No frame count setting specified (ethtool -C ethX tx-frames 0)
+ * - Addition of Tx frame count to the frame count since the
+ * last interrupt was set does not exceed the frame count setting
+ */
+ ring->coalesce_count += pkt_info->tx_packets;
+ if (!pdata->tx_frames)
+ tx_set_ic = 0;
+ else if (pkt_info->tx_packets > pdata->tx_frames)
+ tx_set_ic = 1;
+ else if ((ring->coalesce_count % pdata->tx_frames) <
+ pkt_info->tx_packets)
+ tx_set_ic = 1;
+ else
+ tx_set_ic = 0;
+
+ desc_data = GMAC_GET_DESC_DATA(ring, cur_index);
+ dma_desc = desc_data->dma_desc;
+
+ /* Create a context descriptor if this is a TSO pkt_info */
+ if (tso_context || vlan_context) {
+ if (tso_context) {
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "TSO context descriptor, mss=%u\n",
+ pkt_info->mss);
+
+ /* Set the MSS size */
+ dma_desc->desc2 = GMAC_SET_REG_BITS_LE(dma_desc->desc2,
+ TX_CONTEXT_DESC2_MSS_POS,
+ TX_CONTEXT_DESC2_MSS_LEN,
+ pkt_info->mss);
+
+ /* Mark it as a CONTEXT descriptor */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_CONTEXT_DESC3_CTXT_POS,
+ TX_CONTEXT_DESC3_CTXT_LEN,
+ 1);
+
+ /* Indicate this descriptor contains the MSS */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_CONTEXT_DESC3_TCMSSV_POS,
+ TX_CONTEXT_DESC3_TCMSSV_LEN,
+ 1);
+
+ ring->tx.cur_mss = pkt_info->mss;
+ }
+
+ if (vlan_context) {
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "VLAN context descriptor, ctag=%u\n",
+ pkt_info->vlan_ctag);
+
+ /* Mark it as a CONTEXT descriptor */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_CONTEXT_DESC3_CTXT_POS,
+ TX_CONTEXT_DESC3_CTXT_LEN,
+ 1);
+
+ /* Set the VLAN tag */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_CONTEXT_DESC3_VT_POS,
+ TX_CONTEXT_DESC3_VT_LEN,
+ pkt_info->vlan_ctag);
+
+ /* Indicate this descriptor contains the VLAN tag */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_CONTEXT_DESC3_VLTV_POS,
+ TX_CONTEXT_DESC3_VLTV_LEN,
+ 1);
+
+ ring->tx.cur_vlan_ctag = pkt_info->vlan_ctag;
+ }
+
+ cur_index++;
+ desc_data = GMAC_GET_DESC_DATA(ring, cur_index);
+ dma_desc = desc_data->dma_desc;
+ }
+
+ /* Update buffer address (for TSO this is the header) */
+ dma_desc->desc0 = cpu_to_le32(lower_32_bits(desc_data->skb_dma));
+
+ /* Update the buffer length */
+ dma_desc->desc2 = GMAC_SET_REG_BITS_LE(dma_desc->desc2,
+ TX_NORMAL_DESC2_HL_B1L_POS,
+ TX_NORMAL_DESC2_HL_B1L_LEN,
+ desc_data->skb_dma_len);
+
+ /* VLAN tag insertion check */
+ if (vlan) {
+ dma_desc->desc2 = GMAC_SET_REG_BITS_LE(dma_desc->desc2,
+ TX_NORMAL_DESC2_VTIR_POS,
+ TX_NORMAL_DESC2_VTIR_LEN,
+ TX_NORMAL_DESC2_VLAN_INSERT);
+ pdata->stats.tx_vlan_packets++;
+ }
+
+ /* Timestamp enablement check */
+ if (GMAC_GET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_PTP_POS,
+ TX_PACKET_ATTRIBUTES_PTP_LEN))
+ dma_desc->desc2 = GMAC_SET_REG_BITS_LE(dma_desc->desc2,
+ TX_NORMAL_DESC2_TTSE_POS,
+ TX_NORMAL_DESC2_TTSE_LEN,
+ 1);
+
+ /* Mark it as First Descriptor */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_FD_POS,
+ TX_NORMAL_DESC3_FD_LEN,
+ 1);
+
+ /* Mark it as a NORMAL descriptor */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_CTXT_POS,
+ TX_NORMAL_DESC3_CTXT_LEN,
+ 0);
+
+ /* Set OWN bit if not the first descriptor */
+ if (cur_index != start_index)
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_OWN_POS,
+ TX_NORMAL_DESC3_OWN_LEN,
+ 1);
+
+ if (tso) {
+ /* Enable TSO */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_TSE_POS,
+ TX_NORMAL_DESC3_TSE_LEN,
+ 1);
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_TCPPL_POS,
+ TX_NORMAL_DESC3_TCPPL_LEN,
+ pkt_info->tcp_payload_len);
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_TCPHDRLEN_POS,
+ TX_NORMAL_DESC3_TCPHDRLEN_LEN,
+ pkt_info->tcp_header_len / 4);
+
+ pdata->stats.tx_tso_packets++;
+ } else {
+ /* Enable CRC and Pad Insertion */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_CPC_POS,
+ TX_NORMAL_DESC3_CPC_LEN,
+ 0);
+
+ /* Enable HW CSUM */
+ if (csum)
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_CIC_POS,
+ TX_NORMAL_DESC3_CIC_LEN,
+ 0x3);
+
+ /* Set the total length to be transmitted */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_FL_POS,
+ TX_NORMAL_DESC3_FL_LEN,
+ pkt_info->length);
+ }
+
+ for (i = cur_index - start_index + 1; i < pkt_info->desc_count; i++) {
+ cur_index++;
+ desc_data = GMAC_GET_DESC_DATA(ring, cur_index);
+ dma_desc = desc_data->dma_desc;
+
+ /* Update buffer address */
+ dma_desc->desc0 =
+ cpu_to_le32(lower_32_bits(desc_data->skb_dma));
+
+ /* Update the buffer length */
+ dma_desc->desc2 = GMAC_SET_REG_BITS_LE(dma_desc->desc2,
+ TX_NORMAL_DESC2_HL_B1L_POS,
+ TX_NORMAL_DESC2_HL_B1L_LEN,
+ desc_data->skb_dma_len);
+
+ /* Set OWN bit */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_OWN_POS,
+ TX_NORMAL_DESC3_OWN_LEN,
+ 1);
+
+ /* Mark it as NORMAL descriptor */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_CTXT_POS,
+ TX_NORMAL_DESC3_CTXT_LEN,
+ 0);
+
+ /* Enable HW CSUM */
+ if (csum)
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_CIC_POS,
+ TX_NORMAL_DESC3_CIC_LEN,
+ 0x3);
+ }
+
+ /* Set LAST bit for the last descriptor */
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_LD_POS,
+ TX_NORMAL_DESC3_LD_LEN,
+ 1);
+
+ /* Set IC bit based on Tx coalescing settings */
+ if (tx_set_ic)
+ dma_desc->desc2 = GMAC_SET_REG_BITS_LE(dma_desc->desc2,
+ TX_NORMAL_DESC2_IC_POS,
+ TX_NORMAL_DESC2_IC_LEN,
+ 1);
+
+ /* Save the Tx info to report back during cleanup */
+ desc_data->trx.packets = pkt_info->tx_packets;
+ desc_data->trx.bytes = pkt_info->tx_bytes;
+
+ /* In case the Tx DMA engine is running, make sure everything
+ * is written to the descriptor(s) before setting the OWN bit
+ * for the first descriptor
+ */
+ dma_wmb();
+
+ /* Set OWN bit for the first descriptor */
+ desc_data = GMAC_GET_DESC_DATA(ring, start_index);
+ dma_desc = desc_data->dma_desc;
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_OWN_POS,
+ TX_NORMAL_DESC3_OWN_LEN,
+ 1);
+
+ if (netif_msg_tx_queued(pdata))
+ gmac_dump_tx_desc(pdata, ring, start_index,
+ pkt_info->desc_count, 1);
+
+ /* Make sure ownership is written to the descriptor */
+ smp_wmb();
+
+ ring->cur = cur_index + 1;
+ if (!pkt_info->skb->xmit_more ||
+ netif_xmit_stopped(netdev_get_tx_queue(pdata->netdev,
+ channel->queue_index)))
+ gmac_tx_start_xmit(channel, ring);
+ else
+ ring->tx.xmit_more = 1;
+
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "%s: descriptors %u to %u written, %u:%u\n",
+ channel->name, start_index & (ring->dma_desc_count - 1),
+ (ring->cur - 1) & (ring->dma_desc_count - 1),
+ start_index,
+ ring->cur);
+}
+
+static int gmac_check_rx_tstamp(struct gmac_dma_desc *dma_desc)
+{
+ u32 own, ctxt;
+ int ret = 1;
+
+ own = GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_CONTEXT_DESC3_OWN_POS,
+ RX_CONTEXT_DESC3_OWN_LEN);
+ ctxt = GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_CONTEXT_DESC3_CTXT_POS,
+ RX_CONTEXT_DESC3_CTXT_LEN);
+
+ if (likely(!own && ctxt)) {
+ if (dma_desc->desc0 == 0xffffffff &&
+ dma_desc->desc1 == 0xffffffff)
+ /* Corrupted value */
+ ret = -EINVAL;
+ else
+ /* A valid Timestamp is ready to be read */
+ ret = 0;
+ }
+
+ /* Timestamp not ready */
+ return ret;
+}
+
+static u64 gmac_get_rx_tstamp(struct gmac_dma_desc *dma_desc)
+{
+ u64 nsec;
+
+ nsec = le32_to_cpu(dma_desc->desc1);
+ nsec += le32_to_cpu(dma_desc->desc0) * 1000000000ULL;
+
+ return nsec;
+}
+
+static int gmac_get_rx_tstamp_status(struct gmac_pdata *pdata,
+ struct gmac_dma_desc *next_desc,
+ struct gmac_pkt_info *pkt_info)
+{
+ int ret = -EINVAL;
+
+ int i = 0;
+
+ /* Check if timestamp is OK from context descriptor */
+ do {
+ ret = gmac_check_rx_tstamp(next_desc);
+ if (ret <= 0)
+ goto exit;
+ i++;
+ } while ((ret == 1) && (i < 10));
+
+ if (i == 10) {
+ ret = -EBUSY;
+ netif_dbg(pdata, rx_status, pdata->netdev,
+ "Device has not yet updated the context desc to hold Rx time stamp\n");
+ }
+exit:
+ if (likely(ret == 0)) {
+ /* Timestamp Context Descriptor */
+ pkt_info->rx_tstamp =
+ gmac_get_rx_tstamp(next_desc);
+ pkt_info->attributes =
+ GMAC_SET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_RX_TSTAMP_POS,
+ RX_PACKET_ATTRIBUTES_RX_TSTAMP_LEN,
+ 1);
+ return 1;
+ }
+
+ netif_dbg(pdata, rx_status, pdata->netdev, "RX hw timestamp corrupted\n");
+
+ return ret;
+}
+
+static void gmac_tx_desc_reset(struct gmac_desc_data *desc_data)
+{
+ struct gmac_dma_desc *dma_desc = desc_data->dma_desc;
+
+ /* Reset the Tx descriptor
+ * Set buffer 1 (lo) address to zero
+ * Set buffer 1 (hi) address to zero
+ * Reset all other control bits (IC, TTSE, B2L & B1L)
+ * Reset all other control bits (OWN, CTXT, FD, LD, CPC, CIC, etc)
+ */
+ dma_desc->desc0 = 0;
+ dma_desc->desc1 = 0;
+ dma_desc->desc2 = 0;
+ dma_desc->desc3 = 0;
+
+ /* Make sure ownership is written to the descriptor */
+ dma_wmb();
+}
+
+static void gmac_tx_desc_init(struct gmac_channel *channel)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_ring *ring = channel->tx_ring;
+ struct gmac_desc_data *desc_data;
+ unsigned int q = channel->queue_index;
+ int start_index = ring->cur;
+ int i;
+
+ /* Initialize all descriptors */
+ for (i = 0; i < ring->dma_desc_count; i++) {
+ desc_data = GMAC_GET_DESC_DATA(ring, i);
+
+ /* Initialize Tx descriptor */
+ gmac_tx_desc_reset(desc_data);
+ }
+
+ /* Update the total number of Tx descriptors */
+ GMAC_IOWRITE(pdata, DMA_CH_TDRLR(q), ring->dma_desc_count - 1);
+
+ /* Update the starting address of descriptor ring */
+ desc_data = GMAC_GET_DESC_DATA(ring, start_index);
+ GMAC_IOWRITE(pdata, DMA_CH_TDLR(q),
+ lower_32_bits(desc_data->dma_desc_addr));
+}
+
+static void gmac_rx_desc_reset(struct gmac_pdata *pdata,
+ struct gmac_desc_data *desc_data,
+ unsigned int index)
+{
+ struct gmac_dma_desc *dma_desc = desc_data->dma_desc;
+ unsigned int rx_frames = pdata->rx_frames;
+ unsigned int rx_usecs = pdata->rx_usecs;
+ unsigned int inte;
+
+ memset(dma_desc, 0, sizeof(struct gmac_dma_desc));
+
+ if (!rx_usecs && !rx_frames) {
+ /* No coalescing, interrupt for every descriptor */
+ inte = 1;
+ } else {
+ /* Set interrupt based on Rx frame coalescing setting */
+ if (rx_frames && !((index + 1) % rx_frames))
+ inte = 1;
+ else
+ inte = 0;
+ }
+
+ /* Reset the Rx descriptor
+ * Normal Frame
+ * Set buffer 1 address to skb dma address
+ * Set buffer 2 address to 0 and
+ * set control bits OWN and INTE
+ */
+
+ dma_desc->desc0 = desc_data->skb_dma;
+ dma_desc->desc1 = 0;
+ dma_desc->desc2 = 0;
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_BUF2V_POS,
+ RX_NORMAL_DESC3_BUF2V_LEN,
+ 0);
+
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_BUF1V_POS,
+ RX_NORMAL_DESC3_BUF1V_LEN,
+ 1);
+
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_INTE_POS,
+ RX_NORMAL_DESC3_INTE_LEN,
+ inte);
+
+ /* Since the Rx DMA engine is likely running, make sure everything
+ * is written to the descriptor(s) before setting the OWN bit
+ * for the descriptor
+ */
+ dma_wmb();
+
+ dma_desc->desc3 = GMAC_SET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_OWN_POS,
+ RX_NORMAL_DESC3_OWN_LEN,
+ 1);
+
+ /* Make sure ownership is written to the descriptor */
+ dma_wmb();
+}
+
+static void gmac_rx_desc_init(struct gmac_channel *channel)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_ring *ring = channel->rx_ring;
+ unsigned int start_index = ring->cur;
+ struct gmac_desc_data *desc_data;
+ unsigned int q = channel->queue_index;
+ unsigned int i;
+
+ /* Initialize all descriptors */
+ for (i = 0; i < ring->dma_desc_count; i++) {
+ desc_data = GMAC_GET_DESC_DATA(ring, i);
+
+ /* Initialize Rx descriptor */
+ gmac_rx_desc_reset(pdata, desc_data, i);
+ }
+
+ /* Update the total number of Rx descriptors */
+ GMAC_IOWRITE(pdata, DMA_CH_RDRLR(q), ring->dma_desc_count - 1);
+
+ /* Update the starting address of descriptor ring */
+ desc_data = GMAC_GET_DESC_DATA(ring, start_index);
+ GMAC_IOWRITE(pdata, DMA_CH_RDLR(q),
+ lower_32_bits(desc_data->dma_desc_addr));
+
+ /* Update the Rx Descriptor Tail Pointer */
+ desc_data = GMAC_GET_DESC_DATA(ring, start_index +
+ ring->dma_desc_count - 1);
+ GMAC_IOWRITE(pdata, DMA_CH_RDTR(q),
+ lower_32_bits(desc_data->dma_desc_addr));
+}
+
+static int gmac_is_context_desc(struct gmac_dma_desc *dma_desc)
+{
+ /* Rx and Tx share CTXT bit, so check TDES3.CTXT bit */
+ return GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_CTXT_POS,
+ TX_NORMAL_DESC3_CTXT_LEN);
+}
+
+static int gmac_is_last_desc(struct gmac_dma_desc *dma_desc)
+{
+ /* Rx and Tx share LD bit, so check TDES3.LD bit */
+ return GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ TX_NORMAL_DESC3_LD_POS,
+ TX_NORMAL_DESC3_LD_LEN);
+}
+
+static int gmac_is_rx_csum_error(struct gmac_dma_desc *dma_desc)
+{
+ /* Rx csum error, so check TDES1.IPHE/IPCB/IPCE bit */
+ return GMAC_GET_REG_BITS_LE(dma_desc->desc1,
+ RX_NORMAL_DESC1_IPHE_POS,
+ RX_NORMAL_DESC1_IPHE_LEN) ||
+ GMAC_GET_REG_BITS_LE(dma_desc->desc1,
+ RX_NORMAL_DESC1_IPCB_POS,
+ RX_NORMAL_DESC1_IPCB_LEN) ||
+ GMAC_GET_REG_BITS_LE(dma_desc->desc1,
+ RX_NORMAL_DESC1_IPCE_POS,
+ RX_NORMAL_DESC1_IPCE_LEN);
+}
+
+static int gmac_is_rx_csum_valid(struct gmac_dma_desc *dma_desc)
+{
+ unsigned int vlan_type;
+
+ vlan_type = GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_LT_POS,
+ RX_NORMAL_DESC3_LT_LEN);
+
+ /* Rx csum error, so check TDES1.IPHE/IPCB/IPCE bit */
+ return GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_RS0V_POS,
+ RX_NORMAL_DESC3_RS0V_LEN) &&
+ ((vlan_type == 4) || (vlan_type == 5));
+}
+
+static int gmac_disable_tx_flow_control(struct gmac_pdata *pdata)
+{
+ unsigned int max_q_count, q_count;
+ unsigned int regval;
+ unsigned int i;
+
+ /* Clear MTL flow control */
+ for (i = 0; i < pdata->rx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_RQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval, MTL_Q_RQOMR_EHFC_POS,
+ MTL_Q_RQOMR_EHFC_LEN, 0);
+ GMAC_IOWRITE(pdata, MTL_Q_RQOMR(i), regval);
+ }
+
+ /* Clear MAC flow control */
+ max_q_count = GMAC_MAX_FLOW_CONTROL_QUEUES;
+ q_count = min_t(unsigned int, pdata->tx_q_count, max_q_count);
+ for (i = 0; i < q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MAC_Q_TFCR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MAC_QTFCR_TFE_POS,
+ MAC_QTFCR_TFE_LEN,
+ 0);
+ GMAC_IOWRITE(pdata, MAC_Q_TFCR(i), regval);
+ }
+
+ return 0;
+}
+
+static int gmac_enable_tx_flow_control(struct gmac_pdata *pdata)
+{
+ unsigned int max_q_count, q_count;
+ unsigned int regval;
+ unsigned int i;
+
+ /* Set MTL flow control */
+ for (i = 0; i < pdata->rx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_RQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval, MTL_Q_RQOMR_EHFC_POS,
+ MTL_Q_RQOMR_EHFC_LEN, 1);
+ GMAC_IOWRITE(pdata, MTL_Q_RQOMR(i), regval);
+ }
+
+ /* Set MAC flow control */
+ max_q_count = GMAC_MAX_FLOW_CONTROL_QUEUES;
+ q_count = min_t(unsigned int, pdata->tx_q_count, max_q_count);
+ for (i = 0; i < q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MAC_Q_TFCR(i));
+ /* Enable transmit flow control */
+ regval = GMAC_SET_REG_BITS(regval, MAC_QTFCR_TFE_POS,
+ MAC_QTFCR_TFE_LEN, 1);
+ /* Set pause time */
+ regval = GMAC_SET_REG_BITS(regval, MAC_QTFCR_PT_POS,
+ MAC_QTFCR_PT_LEN, 0xffff);
+ GMAC_IOWRITE(pdata, MAC_Q_TFCR(i), regval);
+ }
+
+ return 0;
+}
+
+static int gmac_disable_rx_flow_control(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_RFCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_RFCR_RFE_POS,
+ MAC_RFCR_RFE_LEN, 0);
+ GMAC_IOWRITE(pdata, MAC_RFCR, regval);
+
+ return 0;
+}
+
+static int gmac_enable_rx_flow_control(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, MAC_RFCR);
+ regval = GMAC_SET_REG_BITS(regval, MAC_RFCR_RFE_POS,
+ MAC_RFCR_RFE_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_RFCR, regval);
+
+ return 0;
+}
+
+static int gmac_config_tx_flow_control(struct gmac_pdata *pdata)
+{
+ if (pdata->tx_pause)
+ gmac_enable_tx_flow_control(pdata);
+ else
+ gmac_disable_tx_flow_control(pdata);
+
+ return 0;
+}
+
+static int gmac_config_rx_flow_control(struct gmac_pdata *pdata)
+{
+ if (pdata->rx_pause)
+ gmac_enable_rx_flow_control(pdata);
+ else
+ gmac_disable_rx_flow_control(pdata);
+
+ return 0;
+}
+
+static int gmac_config_rx_coalesce(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->rx_ring)
+ break;
+
+ regval = GMAC_IOREAD(pdata, DMA_CH_RIWT(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_CH_RIWT_RWT_POS,
+ DMA_CH_RIWT_RWT_LEN,
+ pdata->rx_riwt);
+ GMAC_IOWRITE(pdata, DMA_CH_RIWT(i), regval);
+ }
+
+ return 0;
+}
+
+static void gmac_config_flow_control(struct gmac_pdata *pdata)
+{
+ gmac_config_tx_flow_control(pdata);
+ gmac_config_rx_flow_control(pdata);
+}
+
+static void gmac_config_rx_fep_enable(struct gmac_pdata *pdata)
+{
+ unsigned int i;
+ u32 regval;
+
+ for (i = 0; i < pdata->rx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_RQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_RQOMR_FEP_POS,
+ MTL_Q_RQOMR_FEP_LEN,
+ 1);
+ GMAC_IOWRITE(pdata, MTL_Q_RQOMR(i), regval);
+ }
+}
+
+static void gmac_config_rx_fup_enable(struct gmac_pdata *pdata)
+{
+ unsigned int i;
+ u32 regval;
+
+ for (i = 0; i < pdata->rx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_RQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_RQOMR_FUP_POS,
+ MTL_Q_RQOMR_FUP_LEN,
+ 1);
+ GMAC_IOWRITE(pdata, MTL_Q_RQOMR(i), regval);
+ }
+}
+
+static int gmac_config_tx_coalesce(struct gmac_pdata *pdata)
+{
+ return 0;
+}
+
+static void gmac_config_rx_buffer_size(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->rx_ring)
+ break;
+
+ regval = GMAC_IOREAD(pdata, DMA_CH_RCR(i));
+ /* for normal case, Rx Buffer size = 2048bytes */
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_CH_RCR_RBSZ_POS,
+ DMA_CH_RCR_RBSZ_LEN,
+ pdata->rx_buf_size);
+ GMAC_IOWRITE(pdata, DMA_CH_RCR(i), regval);
+ }
+}
+
+static void gmac_config_tso_mode(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->tx_ring)
+ break;
+
+ if (pdata->hw_feat.tso) {
+ regval = GMAC_IOREAD(pdata, DMA_CH_TCR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_CH_TCR_TSE_POS,
+ DMA_CH_TCR_TSE_LEN,
+ 1);
+ GMAC_IOWRITE(pdata, DMA_CH_TCR(i), regval);
+ }
+ }
+}
+
+static void gmac_config_sph_mode(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->rx_ring)
+ break;
+
+ /* not support sph feature */
+ regval = GMAC_IOREAD(pdata, DMA_CH_CR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_CH_CR_SPH_POS,
+ DMA_CH_CR_SPH_LEN,
+ 0);
+ GMAC_IOWRITE(pdata, DMA_CH_CR(i), regval);
+ }
+}
+
+static unsigned int gmac_usec_to_riwt(struct gmac_pdata *pdata,
+ unsigned int usec)
+{
+ unsigned long rate;
+ unsigned int ret;
+
+ rate = pdata->sysclk_rate;
+
+ /* Convert the input usec value to the watchdog timer value. Each
+ * watchdog timer value is equivalent to 256 clock cycles.
+ * Calculate the required value as:
+ * ( usec * ( system_clock_mhz / 10^6 ) / 256
+ */
+ ret = (usec * (rate / 1000000)) / 256;
+
+ return ret;
+}
+
+static unsigned int gmac_riwt_to_usec(struct gmac_pdata *pdata,
+ unsigned int riwt)
+{
+ unsigned long rate;
+ unsigned int ret;
+
+ rate = pdata->sysclk_rate;
+
+ /* Convert the input watchdog timer value to the usec value. Each
+ * watchdog timer value is equivalent to 256 clock cycles.
+ * Calculate the required value as:
+ * ( riwt * 256 ) / ( system_clock_mhz / 10^6 )
+ */
+ ret = (riwt * 256) / (rate / 1000000);
+
+ return ret;
+}
+
+static int gmac_config_rx_threshold(struct gmac_pdata *pdata,
+ unsigned int val)
+{
+ unsigned int i;
+ u32 regval;
+
+ for (i = 0; i < pdata->rx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_RQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_RQOMR_RTC_POS,
+ MTL_Q_RQOMR_RTC_LEN,
+ val);
+ GMAC_IOWRITE(pdata, MTL_Q_RQOMR(i), regval);
+ }
+
+ return 0;
+}
+
+static void gmac_config_mtl_mode(struct gmac_pdata *pdata)
+{
+ unsigned int i;
+ u32 regval;
+
+ /* Set Tx to weighted round robin scheduling algorithm */
+ regval = GMAC_IOREAD(pdata, MTL_OMR);
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_OMR_TSA_POS,
+ MTL_OMR_TSA_LEN,
+ MTL_TSA_WRR);
+ GMAC_IOWRITE(pdata, MTL_OMR, regval);
+
+ for (i = 0; i < pdata->hw_feat.tx_ch_cnt; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_TQWR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_TQWR_QW_POS,
+ MTL_Q_TQWR_QW_LEN,
+ (0x10 + i));
+ GMAC_IOWRITE(pdata, MTL_Q_TQWR(i), regval);
+ }
+
+ /* Set Rx to strict priority algorithm */
+ regval = GMAC_IOREAD(pdata, MTL_OMR);
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_OMR_RAA_POS,
+ MTL_OMR_RAA_LEN,
+ MTL_RAA_SP);
+ GMAC_IOWRITE(pdata, MTL_OMR, regval);
+}
+
+static void gmac_config_queue_mapping(struct gmac_pdata *pdata)
+{
+ u32 value;
+
+ /* Configure one to one, MTL Rx queue to DMA Rx channel mapping
+ * ie Q0 <--> CH0, Q1 <--> CH1 ... Q7 <--> CH7
+ */
+ value = (MTL_RQDCM0R_Q0MDMACH | MTL_RQDCM0R_Q1MDMACH |
+ MTL_RQDCM0R_Q2MDMACH | MTL_RQDCM0R_Q3MDMACH);
+ GMAC_IOWRITE(pdata, MTL_RQDCM0R, value);
+
+ value = (MTL_RQDCM1R_Q4MDMACH | MTL_RQDCM1R_Q5MDMACH |
+ MTL_RQDCM1R_Q5MDMACH | MTL_RQDCM1R_Q6MDMACH);
+ GMAC_IOWRITE(pdata, MTL_RQDCM1R, value);
+}
+
+static unsigned int gmac_calculate_per_queue_fifo(unsigned int fifo_size,
+ unsigned int queue_count)
+{
+ unsigned int q_fifo_size;
+ unsigned int p_fifo;
+
+ /* Calculate the configured fifo size */
+ q_fifo_size = 1 << (fifo_size + 7);
+
+ /* The configured value may not be the actual amount of fifo RAM */
+ q_fifo_size = min_t(unsigned int, GMAC_MAX_FIFO, q_fifo_size);
+
+ q_fifo_size = q_fifo_size / queue_count;
+
+ /* Each increment in the queue fifo size represents 256 bytes of
+ * fifo, with 0 representing 256 bytes. Distribute the fifo equally
+ * between the queues.
+ */
+ p_fifo = fls(q_fifo_size / 256) - 1;
+
+ p_fifo = (1 << p_fifo);
+
+ p_fifo--;
+
+ return p_fifo;
+}
+
+static void gmac_config_tx_fifo_size(struct gmac_pdata *pdata)
+{
+ unsigned int fifo_size;
+ unsigned int i;
+ u32 regval;
+
+ fifo_size = gmac_calculate_per_queue_fifo(pdata->hw_feat.tx_fifo_size,
+ pdata->tx_q_count);
+
+ for (i = 0; i < pdata->tx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_TQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_TQOMR_TQS_POS,
+ MTL_Q_TQOMR_TQS_LEN,
+ fifo_size);
+ GMAC_IOWRITE(pdata, MTL_Q_TQOMR(i), regval);
+ }
+
+ netif_info(pdata, drv, pdata->netdev,
+ "%d Tx hardware queues, %d byte fifo per queue\n",
+ pdata->tx_q_count, ((fifo_size + 1) * 256));
+}
+
+static void gmac_config_rx_fifo_size(struct gmac_pdata *pdata)
+{
+ unsigned int fifo_size;
+ unsigned int i;
+ u32 regval;
+
+ fifo_size = gmac_calculate_per_queue_fifo(pdata->hw_feat.rx_fifo_size,
+ pdata->rx_q_count);
+
+ for (i = 0; i < pdata->rx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_RQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_RQOMR_RQS_POS,
+ MTL_Q_RQOMR_RQS_LEN,
+ fifo_size);
+ GMAC_IOWRITE(pdata, MTL_Q_RQOMR(i), regval);
+ }
+
+ netif_info(pdata, drv, pdata->netdev,
+ "%d Rx hardware queues, %d byte fifo per queue\n",
+ pdata->rx_q_count, ((fifo_size + 1) * 256));
+}
+
+static void gmac_config_flow_control_threshold(struct gmac_pdata *pdata)
+{
+ unsigned int i;
+ u32 regval;
+
+ for (i = 0; i < pdata->rx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_RQOMR(i));
+ /* Activate flow control when less than 1.5k left in fifo */
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_RQOMR_RFA_POS,
+ MTL_Q_RQOMR_RFA_LEN,
+ 1);
+ /* De-activate flow control when more than 2.5k left in fifo */
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_RQOMR_RFD_POS,
+ MTL_Q_RQOMR_RFD_LEN, 3);
+ GMAC_IOWRITE(pdata, MTL_Q_RQOMR(i), regval);
+ }
+}
+
+static int gmac_config_tx_threshold(struct gmac_pdata *pdata,
+ unsigned int val)
+{
+ unsigned int i;
+ u32 regval;
+
+ for (i = 0; i < pdata->tx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_TQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_TQOMR_TTC_POS,
+ MTL_Q_TQOMR_TTC_LEN,
+ val);
+ GMAC_IOWRITE(pdata, MTL_Q_TQOMR(i), regval);
+ }
+
+ return 0;
+}
+
+static int gmac_config_rsf_mode(struct gmac_pdata *pdata,
+ unsigned int val)
+{
+ unsigned int i;
+ u32 regval;
+
+ for (i = 0; i < pdata->rx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_RQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_RQOMR_RSF_POS,
+ MTL_Q_RQOMR_RSF_LEN, val);
+ GMAC_IOWRITE(pdata, MTL_Q_RQOMR(i), regval);
+ }
+
+ return 0;
+}
+
+static int gmac_config_tsf_mode(struct gmac_pdata *pdata,
+ unsigned int val)
+{
+ unsigned int i;
+ u32 regval;
+
+ for (i = 0; i < pdata->tx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_TQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_Q_TQOMR_TSF_POS,
+ MTL_Q_TQOMR_TSF_LEN,
+ val);
+ GMAC_IOWRITE(pdata, MTL_Q_TQOMR(i), regval);
+ }
+
+ return 0;
+}
+
+static int gmac_config_osp_mode(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->tx_ring)
+ break;
+
+ regval = GMAC_IOREAD(pdata, DMA_CH_TCR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_CH_TCR_OSP_POS,
+ DMA_CH_TCR_OSP_LEN,
+ pdata->tx_osp_mode);
+ GMAC_IOWRITE(pdata, DMA_CH_TCR(i), regval);
+ }
+
+ return 0;
+}
+
+static int gmac_config_pblx8(struct gmac_pdata *pdata)
+{
+ unsigned int i;
+ u32 regval;
+
+ for (i = 0; i < pdata->channel_count; i++) {
+ regval = GMAC_IOREAD(pdata, DMA_CH_CR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_CH_CR_PBLX8_POS,
+ DMA_CH_CR_PBLX8_LEN,
+ pdata->pblx8);
+ GMAC_IOWRITE(pdata, DMA_CH_CR(i), regval);
+ }
+
+ return 0;
+}
+
+static int gmac_config_tx_pbl_val(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->tx_ring)
+ break;
+
+ regval = GMAC_IOREAD(pdata, DMA_CH_TCR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_CH_TCR_PBL_POS,
+ DMA_CH_TCR_PBL_LEN,
+ pdata->tx_pbl);
+ GMAC_IOWRITE(pdata, DMA_CH_TCR(i), regval);
+ }
+
+ return 0;
+}
+
+static int gmac_config_rx_pbl_val(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+ u32 regval;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->rx_ring)
+ break;
+
+ regval = GMAC_IOREAD(pdata, DMA_CH_RCR(i));
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_CH_RCR_PBL_POS,
+ DMA_CH_RCR_PBL_LEN,
+ pdata->rx_pbl);
+ GMAC_IOWRITE(pdata, DMA_CH_RCR(i), regval);
+ }
+
+ return 0;
+}
+
+static void gmac_tx_mmc_int(struct gmac_pdata *pdata)
+{
+ unsigned int mmc_isr = GMAC_IOREAD(pdata, MMC_TISR);
+ struct gmac_stats *stats = &pdata->stats;
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXOCTETCOUNT_GB_POS,
+ MMC_TISR_TXOCTETCOUNT_GB_LEN))
+ stats->txoctetcount_gb +=
+ GMAC_IOREAD(pdata, MMC_TXOCTETCOUNT_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXFRAMECOUNT_GB_POS,
+ MMC_TISR_TXFRAMECOUNT_GB_LEN))
+ stats->txframecount_gb +=
+ GMAC_IOREAD(pdata, MMC_TXPACKETCOUNT_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXBROADCASTFRAMES_G_POS,
+ MMC_TISR_TXBROADCASTFRAMES_G_LEN))
+ stats->txbroadcastframes_g +=
+ GMAC_IOREAD(pdata, MMC_TXBROADCASTFRAMES_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXMULTICASTFRAMES_G_POS,
+ MMC_TISR_TXMULTICASTFRAMES_G_LEN))
+ stats->txmulticastframes_g +=
+ GMAC_IOREAD(pdata, MMC_TXMULTICASTFRAMES_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TX64OCTETS_GB_POS,
+ MMC_TISR_TX64OCTETS_GB_LEN))
+ stats->tx64octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX64OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TX65TO127OCTETS_GB_POS,
+ MMC_TISR_TX65TO127OCTETS_GB_LEN))
+ stats->tx65to127octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX65TO127OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TX128TO255OCTETS_GB_POS,
+ MMC_TISR_TX128TO255OCTETS_GB_LEN))
+ stats->tx128to255octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX128TO255OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TX256TO511OCTETS_GB_POS,
+ MMC_TISR_TX256TO511OCTETS_GB_LEN))
+ stats->tx256to511octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX256TO511OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TX512TO1023OCTETS_GB_POS,
+ MMC_TISR_TX512TO1023OCTETS_GB_LEN))
+ stats->tx512to1023octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX512TO1023OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TX1024TOMAXOCTETS_GB_POS,
+ MMC_TISR_TX1024TOMAXOCTETS_GB_LEN))
+ stats->tx1024tomaxoctets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX1024TOMAXOCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXUNICASTFRAMES_GB_POS,
+ MMC_TISR_TXUNICASTFRAMES_GB_LEN))
+ stats->txunicastframes_gb +=
+ GMAC_IOREAD(pdata, MMC_TXUNICASTFRAMES_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXMULTICASTFRAMES_GB_POS,
+ MMC_TISR_TXMULTICASTFRAMES_GB_LEN))
+ stats->txmulticastframes_gb +=
+ GMAC_IOREAD(pdata, MMC_TXMULTICASTFRAMES_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXBROADCASTFRAMES_GB_POS,
+ MMC_TISR_TXBROADCASTFRAMES_GB_LEN))
+ stats->txbroadcastframes_g +=
+ GMAC_IOREAD(pdata, MMC_TXBROADCASTFRAMES_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXUNDERFLOWERROR_POS,
+ MMC_TISR_TXUNDERFLOWERROR_LEN))
+ stats->txunderflowerror +=
+ GMAC_IOREAD(pdata, MMC_TXUNDERFLOWERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXSINGLECOL_G_POS,
+ MMC_TISR_TXSINGLECOL_G_POS))
+ stats->txsinglecol_g +=
+ GMAC_IOREAD(pdata, MMC_TXSINGLECOL_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXMULTICOL_G_POS,
+ MMC_TISR_TXMULTICOL_G_LEN))
+ stats->txmulticol_g +=
+ GMAC_IOREAD(pdata, MMC_TXMULTICOL_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXDEFERRED_POS,
+ MMC_TISR_TXDEFERRED_LEN))
+ stats->txdeferred +=
+ GMAC_IOREAD(pdata, MMC_TXDEFERRED);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXLATECOL_POS,
+ MMC_TISR_TXLATECOL_LEN))
+ stats->txlatecol +=
+ GMAC_IOREAD(pdata, MMC_TXLATECOL);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXEXESSCOL_POS,
+ MMC_TISR_TXEXESSCOL_LEN))
+ stats->txexesscol +=
+ GMAC_IOREAD(pdata, MMC_TXEXESSCOL);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXCARRIERERROR_POS,
+ MMC_TISR_TXCARRIERERROR_LEN))
+ stats->txcarriererror +=
+ GMAC_IOREAD(pdata, MMC_TXCARRIERERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXOCTETCOUNT_G_POS,
+ MMC_TISR_TXOCTETCOUNT_G_LEN))
+ stats->txoctetcount_g +=
+ GMAC_IOREAD(pdata, MMC_TXOCTETCOUNT_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXFRAMECOUNT_G_POS,
+ MMC_TISR_TXFRAMECOUNT_G_LEN))
+ stats->txframecount_g +=
+ GMAC_IOREAD(pdata, MMC_TXPACKETSCOUNT_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXEXCESSDEF_POS,
+ MMC_TISR_TXEXCESSDEF_LEN))
+ stats->txexcessdef +=
+ GMAC_IOREAD(pdata, MMC_TXEXCESSDEF);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXPAUSEFRAMES_POS,
+ MMC_TISR_TXPAUSEFRAMES_LEN))
+ stats->txpauseframes +=
+ GMAC_IOREAD(pdata, MMC_TXPAUSEFRAMES);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXVLANFRAMES_G_POS,
+ MMC_TISR_TXVLANFRAMES_G_LEN))
+ stats->txvlanframes_g +=
+ GMAC_IOREAD(pdata, MMC_TXVLANFRAMES_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXOVERSIZE_G_POS,
+ MMC_TISR_TXOVERSIZE_G_LEN))
+ stats->txosizeframe_g +=
+ GMAC_IOREAD(pdata, MMC_TXOVERSIZE_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXLPIUSEC_POS,
+ MMC_TISR_TXLPIUSEC_LEN))
+ stats->txlpiusec +=
+ GMAC_IOREAD(pdata, MMC_TXLPIUSEC);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_TISR_TXLPITRAN_POS,
+ MMC_TISR_TXLPITRAN_LEN))
+ stats->txlpitran +=
+ GMAC_IOREAD(pdata, MMC_TXLPITRAN);
+}
+
+static void gmac_rx_mmc_int(struct gmac_pdata *pdata)
+{
+ unsigned int mmc_isr = GMAC_IOREAD(pdata, MMC_RISR);
+ struct gmac_stats *stats = &pdata->stats;
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXFRAMECOUNT_GB_POS,
+ MMC_RISR_RXFRAMECOUNT_GB_LEN))
+ stats->rxframecount_gb +=
+ GMAC_IOREAD(pdata, MMC_RXPACKETCOUNT_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXOCTETCOUNT_GB_POS,
+ MMC_RISR_RXOCTETCOUNT_GB_LEN))
+ stats->rxoctetcount_gb +=
+ GMAC_IOREAD(pdata, MMC_RXOCTETCOUNT_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXOCTETCOUNT_G_POS,
+ MMC_RISR_RXOCTETCOUNT_G_LEN))
+ stats->rxoctetcount_g +=
+ GMAC_IOREAD(pdata, MMC_RXOCTETCOUNT_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXBROADCASTFRAMES_G_POS,
+ MMC_RISR_RXBROADCASTFRAMES_G_LEN))
+ stats->rxbroadcastframes_g +=
+ GMAC_IOREAD(pdata, MMC_RXBROADCASTFRAMES_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXMULTICASTFRAMES_G_POS,
+ MMC_RISR_RXMULTICASTFRAMES_G_LEN))
+ stats->rxmulticastframes_g +=
+ GMAC_IOREAD(pdata, MMC_RXMULTICASTFRAMES_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXCRCERROR_POS,
+ MMC_RISR_RXCRCERROR_LEN))
+ stats->rxcrcerror +=
+ GMAC_IOREAD(pdata, MMC_RXCRCERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXALIGNMENTERROR_POS,
+ MMC_RISR_RXALIGNMENTERROR_LEN))
+ stats->rxalignerror +=
+ GMAC_IOREAD(pdata, MMC_RXALIGNMENTERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXRUNTERROR_POS,
+ MMC_RISR_RXRUNTERROR_LEN))
+ stats->rxrunterror +=
+ GMAC_IOREAD(pdata, MMC_RXRUNTERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXJABBERERROR_POS,
+ MMC_RISR_RXJABBERERROR_LEN))
+ stats->rxjabbererror +=
+ GMAC_IOREAD(pdata, MMC_RXJABBERERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXUNDERSIZE_G_POS,
+ MMC_RISR_RXUNDERSIZE_G_LEN))
+ stats->rxundersize_g +=
+ GMAC_IOREAD(pdata, MMC_RXUNDERSIZE_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXOVERSIZE_G_POS,
+ MMC_RISR_RXOVERSIZE_G_LEN))
+ stats->rxoversize_g +=
+ GMAC_IOREAD(pdata, MMC_RXOVERSIZE_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RX64OCTETS_GB_POS,
+ MMC_RISR_RX64OCTETS_GB_LEN))
+ stats->rx64octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX64OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RX65TO127OCTETS_GB_POS,
+ MMC_RISR_RX65TO127OCTETS_GB_LEN))
+ stats->rx65to127octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX65TO127OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RX128TO255OCTETS_GB_POS,
+ MMC_RISR_RX128TO255OCTETS_GB_LEN))
+ stats->rx128to255octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX128TO255OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RX256TO511OCTETS_GB_POS,
+ MMC_RISR_RX256TO511OCTETS_GB_LEN))
+ stats->rx256to511octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX256TO511OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RX512TO1023OCTETS_GB_POS,
+ MMC_RISR_RX512TO1023OCTETS_GB_LEN))
+ stats->rx512to1023octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX512TO1023OCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RX1024TOMAXOCTETS_GB_POS,
+ MMC_RISR_RX1024TOMAXOCTETS_GB_LEN))
+ stats->rx1024tomaxoctets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX1024TOMAXOCTETS_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXUNICASTFRAMES_G_POS,
+ MMC_RISR_RXUNICASTFRAMES_G_LEN))
+ stats->rxunicastframes_g +=
+ GMAC_IOREAD(pdata, MMC_RXUNICASTFRAMES_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXLENGTHERROR_POS,
+ MMC_RISR_RXLENGTHERROR_LEN))
+ stats->rxlengtherror +=
+ GMAC_IOREAD(pdata, MMC_RXLENGTHERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXOUTOFRANGETYPE_POS,
+ MMC_RISR_RXOUTOFRANGETYPE_LEN))
+ stats->rxoutofrangetype +=
+ GMAC_IOREAD(pdata, MMC_RXOUTOFRANGETYPE);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXPAUSEFRAMES_POS,
+ MMC_RISR_RXPAUSEFRAMES_LEN))
+ stats->rxpauseframes +=
+ GMAC_IOREAD(pdata, MMC_RXPAUSEFRAMES);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXFIFOOVERFLOW_POS,
+ MMC_RISR_RXFIFOOVERFLOW_LEN))
+ stats->rxfifooverflow +=
+ GMAC_IOREAD(pdata, MMC_RXFIFOOVERFLOW);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXVLANFRAMES_GB_POS,
+ MMC_RISR_RXVLANFRAMES_GB_LEN))
+ stats->rxvlanframes_gb +=
+ GMAC_IOREAD(pdata, MMC_RXVLANFRAMES_GB);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXWATCHDOGERROR_POS,
+ MMC_RISR_RXWATCHDOGERROR_LEN))
+ stats->rxwatchdogerror +=
+ GMAC_IOREAD(pdata, MMC_RXWATCHDOGERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXRCVERROR_POS,
+ MMC_RISR_RXRCVERROR_LEN))
+ stats->rxreceiveerror +=
+ GMAC_IOREAD(pdata, MMC_RXRCVERROR);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXCTRLFRAMES_POS,
+ MMC_RISR_RXCTRLFRAMES_LEN))
+ stats->rxctrlframes_g +=
+ GMAC_IOREAD(pdata, MMC_RXCTRLFRAMES_G);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXLPIUSEC_POS,
+ MMC_RISR_RXLPIUSEC_LEN))
+ stats->rxlpiusec +=
+ GMAC_IOREAD(pdata, MMC_RXLPIUSEC);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_RISR_RXLPITRAN_POS,
+ MMC_RISR_RXLPITRAN_LEN))
+ stats->rxlpitran += GMAC_IOREAD(pdata, MMC_RXLPITRAN);
+}
+
+static void gmac_rxipc_mmc_int(struct gmac_pdata *pdata)
+{
+ unsigned int mmc_isr = GMAC_IOREAD(pdata, MMC_IPCSR);
+ struct gmac_stats *stats = &pdata->stats;
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4GDPKTS_POS,
+ MMC_IPCSR_RXIPV4GDPKTS_LEN))
+ stats->rxipv4_g +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4GDPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4HDRERRPKTS_POS,
+ MMC_IPCSR_RXIPV4HDRERRPKTS_LEN))
+ stats->rxipv4hderr +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4HDRERRPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4NOPAYPKTS_POS,
+ MMC_IPCSR_RXIPV4NOPAYPKTS_LEN))
+ stats->rxipv4nopay +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4NOPAYPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4FRAGPKTS_POS,
+ MMC_IPCSR_RXIPV4FRAGPKTS_LEN))
+ stats->rxipv4frag +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4FRAGPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4UBSBLPKTS_POS,
+ MMC_IPCSR_RXIPV4UBSBLPKTS_LEN))
+ stats->rxipv4udsbl +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4UBSBLPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV6GDPKTS_POS,
+ MMC_IPCSR_RXIPV6GDPKTS_LEN))
+ stats->rxipv6_g +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6GDPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV6HDRERRPKTS_POS,
+ MMC_IPCSR_RXIPV6HDRERRPKTS_LEN))
+ stats->rxipv6hderr +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6HDRERRPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV6NOPAYPKTS_POS,
+ MMC_IPCSR_RXIPV6NOPAYPKTS_LEN))
+ stats->rxipv6nopay +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6NOPAYPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXUDPGDPKTS_POS,
+ MMC_IPCSR_RXUDPGDPKTS_LEN))
+ stats->rxudp_g +=
+ GMAC_IOREAD(pdata, MMC_RXUDPGDPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXUDPERRPKTS_POS,
+ MMC_IPCSR_RXUDPERRPKTS_LEN))
+ stats->rxudperr +=
+ GMAC_IOREAD(pdata, MMC_RXUDPERRPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXTCPGDPKTS_POS,
+ MMC_IPCSR_RXTCPGDPKTS_LEN))
+ stats->rxtcp_g +=
+ GMAC_IOREAD(pdata, MMC_RXTCPGDPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXTCPERRPKTS_POS,
+ MMC_IPCSR_RXTCPERRPKTS_LEN))
+ stats->rxtcperr +=
+ GMAC_IOREAD(pdata, MMC_RXTCPERRPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXICMPGDPKTS_POS,
+ MMC_IPCSR_RXICMPGDPKTS_LEN))
+ stats->rxicmp_g +=
+ GMAC_IOREAD(pdata, MMC_RXICMPGDPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXICMPERRPKTS_POS,
+ MMC_IPCSR_RXICMPERRPKTS_LEN))
+ stats->rxicmperr +=
+ GMAC_IOREAD(pdata, MMC_RXICMPERRPKTS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4GDOCTETS_POS,
+ MMC_IPCSR_RXIPV4GDOCTETS_LEN))
+ stats->rxipv4octets_g +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4GDOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4GDOCTETS_POS,
+ MMC_IPCSR_RXIPV4GDOCTETS_LEN))
+ stats->rxipv4hderroctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4HDRERROCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4NOPAYOCTETS_POS,
+ MMC_IPCSR_RXIPV4NOPAYOCTETS_LEN))
+ stats->rxipv4nopayoctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4NOPAYOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4FRAGOCTETS_POS,
+ MMC_IPCSR_RXIPV4FRAGOCTETS_LEN))
+ stats->rxipv4fragoctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4FRAGOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV4UDSBLOCTETS_POS,
+ MMC_IPCSR_RXIPV4UDSBLOCTETS_LEN))
+ stats->rxipv4udsbloctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4UDSBLOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV6GDOCTETS_POS,
+ MMC_IPCSR_RXIPV6GDOCTETS_LEN))
+ stats->rxipv6octets_g +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6GDOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV6HDRERROCTETS_POS,
+ MMC_IPCSR_RXIPV6HDRERROCTETS_LEN))
+ stats->rxipv6hderroctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6HDRERROCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXIPV6NOPAYOCTETS_POS,
+ MMC_IPCSR_RXIPV6NOPAYOCTETS_LEN))
+ stats->rxipv6nopayoctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6NOPAYOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXUDPGDOCTETS_POS,
+ MMC_IPCSR_RXUDPGDOCTETS_LEN))
+ stats->rxudpoctets_g +=
+ GMAC_IOREAD(pdata, MMC_RXUDPGDOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXUDPERROCTETS_POS,
+ MMC_IPCSR_RXUDPERROCTETS_LEN))
+ stats->rxudperroctets +=
+ GMAC_IOREAD(pdata, MMC_RXUDPERROCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXTCPGDOCTETS_POS,
+ MMC_IPCSR_RXTCPGDOCTETS_LEN))
+ stats->rxtcpoctets_g +=
+ GMAC_IOREAD(pdata, MMC_RXTCPGDOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXTCPERROCTETS_POS,
+ MMC_IPCSR_RXTCPERROCTETS_LEN))
+ stats->rxtcperroctets +=
+ GMAC_IOREAD(pdata, MMC_RXTCPERROCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXICMPGDOCTETS_POS,
+ MMC_IPCSR_RXICMPGDOCTETS_LEN))
+ stats->rxicmpoctets_g +=
+ GMAC_IOREAD(pdata, MMC_RXICMPGDOCTETS);
+
+ if (GMAC_GET_REG_BITS(mmc_isr,
+ MMC_IPCSR_RXICMPERROCTETS_POS,
+ MMC_IPCSR_RXICMPERROCTETS_LEN))
+ stats->rxicmperroctets +=
+ GMAC_IOREAD(pdata, MMC_RXICMPERROCTETS);
+}
+
+static void gmac_read_mmc_stats(struct gmac_pdata *pdata)
+{
+ struct gmac_stats *stats = &pdata->stats;
+ u32 regval;
+
+ /* Freeze counters */
+ regval = GMAC_IOREAD(pdata, MMC_CR);
+ regval = GMAC_SET_REG_BITS(regval,
+ MMC_CR_MCF_POS,
+ MMC_CR_MCF_LEN,
+ 1);
+ GMAC_IOWRITE(pdata, MMC_CR, regval);
+
+ /* MMC TX counter registers */
+ stats->txoctetcount_gb +=
+ GMAC_IOREAD(pdata, MMC_TXOCTETCOUNT_GB);
+ stats->txframecount_gb +=
+ GMAC_IOREAD(pdata, MMC_TXPACKETCOUNT_GB);
+ stats->txbroadcastframes_g +=
+ GMAC_IOREAD(pdata, MMC_TXBROADCASTFRAMES_G);
+ stats->txmulticastframes_g +=
+ GMAC_IOREAD(pdata, MMC_TXMULTICASTFRAMES_G);
+ stats->tx64octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX64OCTETS_GB);
+ stats->tx65to127octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX65TO127OCTETS_GB);
+ stats->tx128to255octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX128TO255OCTETS_GB);
+ stats->tx256to511octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX256TO511OCTETS_GB);
+ stats->tx512to1023octets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX512TO1023OCTETS_GB);
+ stats->tx1024tomaxoctets_gb +=
+ GMAC_IOREAD(pdata, MMC_TX1024TOMAXOCTETS_GB);
+ stats->txunicastframes_gb +=
+ GMAC_IOREAD(pdata, MMC_TXUNICASTFRAMES_GB);
+ stats->txmulticastframes_gb +=
+ GMAC_IOREAD(pdata, MMC_TXMULTICASTFRAMES_GB);
+ stats->txbroadcastframes_gb +=
+ GMAC_IOREAD(pdata, MMC_TXBROADCASTFRAMES_GB);
+ stats->txunderflowerror +=
+ GMAC_IOREAD(pdata, MMC_TXUNDERFLOWERROR);
+ stats->txsinglecol_g +=
+ GMAC_IOREAD(pdata, MMC_TXSINGLECOL_G);
+ stats->txmulticol_g +=
+ GMAC_IOREAD(pdata, MMC_TXMULTICOL_G);
+ stats->txdeferred +=
+ GMAC_IOREAD(pdata, MMC_TXDEFERRED);
+ stats->txlatecol +=
+ GMAC_IOREAD(pdata, MMC_TXLATECOL);
+ stats->txexesscol +=
+ GMAC_IOREAD(pdata, MMC_TXEXESSCOL);
+ stats->txcarriererror +=
+ GMAC_IOREAD(pdata, MMC_TXCARRIERERROR);
+ stats->txoctetcount_g +=
+ GMAC_IOREAD(pdata, MMC_TXOCTETCOUNT_G);
+ stats->txframecount_g +=
+ GMAC_IOREAD(pdata, MMC_TXPACKETSCOUNT_G);
+ stats->txexcessdef +=
+ GMAC_IOREAD(pdata, MMC_TXEXCESSDEF);
+ stats->txpauseframes +=
+ GMAC_IOREAD(pdata, MMC_TXPAUSEFRAMES);
+ stats->txvlanframes_g +=
+ GMAC_IOREAD(pdata, MMC_TXVLANFRAMES_G);
+ stats->txosizeframe_g +=
+ GMAC_IOREAD(pdata, MMC_TXOVERSIZE_G);
+ stats->txlpiusec +=
+ GMAC_IOREAD(pdata, MMC_TXLPIUSEC);
+ stats->txlpitran +=
+ GMAC_IOREAD(pdata, MMC_TXLPITRAN);
+
+ /* MMC RX counter registers */
+ stats->rxframecount_gb +=
+ GMAC_IOREAD(pdata, MMC_RXPACKETCOUNT_GB);
+ stats->rxoctetcount_gb +=
+ GMAC_IOREAD(pdata, MMC_RXOCTETCOUNT_GB);
+ stats->rxoctetcount_g +=
+ GMAC_IOREAD(pdata, MMC_RXOCTETCOUNT_G);
+ stats->rxbroadcastframes_g +=
+ GMAC_IOREAD(pdata, MMC_RXBROADCASTFRAMES_G);
+ stats->rxmulticastframes_g +=
+ GMAC_IOREAD(pdata, MMC_RXMULTICASTFRAMES_G);
+ stats->rxcrcerror +=
+ GMAC_IOREAD(pdata, MMC_RXCRCERROR);
+ stats->rxalignerror +=
+ GMAC_IOREAD(pdata, MMC_RXALIGNMENTERROR);
+ stats->rxrunterror +=
+ GMAC_IOREAD(pdata, MMC_RXRUNTERROR);
+ stats->rxjabbererror +=
+ GMAC_IOREAD(pdata, MMC_RXJABBERERROR);
+ stats->rxundersize_g +=
+ GMAC_IOREAD(pdata, MMC_RXUNDERSIZE_G);
+ stats->rxoversize_g +=
+ GMAC_IOREAD(pdata, MMC_RXOVERSIZE_G);
+ stats->rx64octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX64OCTETS_GB);
+ stats->rx65to127octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX65TO127OCTETS_GB);
+ stats->rx128to255octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX128TO255OCTETS_GB);
+ stats->rx256to511octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX256TO511OCTETS_GB);
+ stats->rx512to1023octets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX512TO1023OCTETS_GB);
+ stats->rx1024tomaxoctets_gb +=
+ GMAC_IOREAD(pdata, MMC_RX1024TOMAXOCTETS_GB);
+ stats->rxunicastframes_g +=
+ GMAC_IOREAD(pdata, MMC_RXUNICASTFRAMES_G);
+ stats->rxlengtherror +=
+ GMAC_IOREAD(pdata, MMC_RXLENGTHERROR);
+ stats->rxoutofrangetype +=
+ GMAC_IOREAD(pdata, MMC_RXOUTOFRANGETYPE);
+ stats->rxpauseframes +=
+ GMAC_IOREAD(pdata, MMC_RXPAUSEFRAMES);
+ stats->rxfifooverflow +=
+ GMAC_IOREAD(pdata, MMC_RXFIFOOVERFLOW);
+ stats->rxvlanframes_gb +=
+ GMAC_IOREAD(pdata, MMC_RXVLANFRAMES_GB);
+ stats->rxwatchdogerror +=
+ GMAC_IOREAD(pdata, MMC_RXWATCHDOGERROR);
+ stats->rxreceiveerror +=
+ GMAC_IOREAD(pdata, MMC_RXRCVERROR);
+ stats->rxctrlframes_g +=
+ GMAC_IOREAD(pdata, MMC_RXCTRLFRAMES_G);
+ stats->rxlpiusec +=
+ GMAC_IOREAD(pdata, MMC_RXLPIUSEC);
+ stats->rxlpitran +=
+ GMAC_IOREAD(pdata, MMC_RXLPITRAN);
+
+ /* MMC RX IPC counter registers */
+ stats->rxipv4_g +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4GDPKTS);
+ stats->rxipv4hderr +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4HDRERRPKTS);
+ stats->rxipv4nopay +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4NOPAYPKTS);
+ stats->rxipv4frag +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4FRAGPKTS);
+ stats->rxipv4udsbl +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4UBSBLPKTS);
+ stats->rxipv6_g +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6GDPKTS);
+ stats->rxipv6hderr +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6HDRERRPKTS);
+ stats->rxipv6nopay +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6NOPAYPKTS);
+ stats->rxudp_g +=
+ GMAC_IOREAD(pdata, MMC_RXUDPGDPKTS);
+ stats->rxudperr +=
+ GMAC_IOREAD(pdata, MMC_RXUDPERRPKTS);
+ stats->rxtcp_g +=
+ GMAC_IOREAD(pdata, MMC_RXTCPGDPKTS);
+ stats->rxtcperr +=
+ GMAC_IOREAD(pdata, MMC_RXTCPERRPKTS);
+ stats->rxicmp_g +=
+ GMAC_IOREAD(pdata, MMC_RXICMPGDPKTS);
+ stats->rxicmperr +=
+ GMAC_IOREAD(pdata, MMC_RXICMPERRPKTS);
+ stats->rxipv4octets_g +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4GDOCTETS);
+ stats->rxipv4hderroctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4HDRERROCTETS);
+ stats->rxipv4nopayoctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4NOPAYOCTETS);
+ stats->rxipv4fragoctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4FRAGOCTETS);
+ stats->rxipv4udsbloctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV4UDSBLOCTETS);
+ stats->rxipv6octets_g +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6GDOCTETS);
+ stats->rxipv6hderroctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6HDRERROCTETS);
+ stats->rxipv6nopayoctets +=
+ GMAC_IOREAD(pdata, MMC_RXIPV6NOPAYOCTETS);
+ stats->rxudpoctets_g +=
+ GMAC_IOREAD(pdata, MMC_RXUDPGDOCTETS);
+ stats->rxudperroctets +=
+ GMAC_IOREAD(pdata, MMC_RXUDPERROCTETS);
+ stats->rxtcpoctets_g +=
+ GMAC_IOREAD(pdata, MMC_RXTCPGDOCTETS);
+ stats->rxtcperroctets +=
+ GMAC_IOREAD(pdata, MMC_RXTCPERROCTETS);
+ stats->rxicmpoctets_g +=
+ GMAC_IOREAD(pdata, MMC_RXICMPGDOCTETS);
+ stats->rxicmperroctets +=
+ GMAC_IOREAD(pdata, MMC_RXICMPERROCTETS);
+
+ /* Un-freeze counters */
+ regval = GMAC_IOREAD(pdata, MMC_CR);
+ regval = GMAC_SET_REG_BITS(regval, MMC_CR_MCF_POS,
+ MMC_CR_MCF_LEN, 0);
+ GMAC_IOWRITE(pdata, MMC_CR, regval);
+}
+
+static void gmac_config_mmc(struct gmac_pdata *pdata)
+{
+ unsigned int regval;
+
+ regval = GMAC_IOREAD(pdata, MMC_CR);
+ /* Set counters to reset on read */
+ regval = GMAC_SET_REG_BITS(regval, MMC_CR_ROR_POS,
+ MMC_CR_ROR_LEN, 1);
+ /* Reset the counters */
+ regval = GMAC_SET_REG_BITS(regval, MMC_CR_CR_POS,
+ MMC_CR_CR_LEN, 1);
+ GMAC_IOWRITE(pdata, MMC_CR, regval);
+}
+
+static void gmac_enable_dma_interrupts(struct gmac_pdata *pdata)
+{
+ unsigned int dma_ch_isr, dma_ch_ier;
+ struct gmac_channel *channel;
+ unsigned int i;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ /* Clear all the interrupts which are set */
+ dma_ch_isr = GMAC_IOREAD(pdata, DMA_CH_SR(i));
+ GMAC_IOWRITE(pdata, DMA_CH_SR(i), dma_ch_isr);
+
+ /* Clear all interrupt enable bits */
+ dma_ch_ier = 0;
+
+ /* Enable following interrupts
+ * NIE - Normal Interrupt Summary Enable
+ * AIE - Abnormal Interrupt Summary Enable
+ * FBEE - Fatal Bus Error Enable
+ */
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier,
+ DMA_CH_IER_NIE_POS,
+ DMA_CH_IER_NIE_LEN, 1);
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier,
+ DMA_CH_IER_AIE_POS,
+ DMA_CH_IER_AIE_LEN, 1);
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier,
+ DMA_CH_IER_FBEE_POS,
+ DMA_CH_IER_FBEE_LEN, 1);
+
+ if (channel->tx_ring) {
+ /* Enable the following Tx interrupts
+ * TIE - Transmit Interrupt Enable (unless using
+ * per channel interrupts)
+ */
+ if (!pdata->per_channel_irq)
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier,
+ DMA_CH_IER_TIE_POS,
+ DMA_CH_IER_TIE_LEN,
+ 1);
+ }
+ if (channel->rx_ring) {
+ /* Enable following Rx interrupts
+ * RBUE - Receive Buffer Unavailable Enable
+ * RIE - Receive Interrupt Enable (unless using
+ * per channel interrupts)
+ */
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier,
+ DMA_CH_IER_RBUE_POS,
+ DMA_CH_IER_RBUE_LEN,
+ 1);
+ if (!pdata->per_channel_irq)
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier,
+ DMA_CH_IER_RIE_POS,
+ DMA_CH_IER_RIE_LEN,
+ 1);
+ }
+
+ GMAC_IOWRITE(pdata, DMA_CH_IER(i), dma_ch_ier);
+ }
+}
+
+static void gmac_enable_mtl_interrupts(struct gmac_pdata *pdata)
+{
+ unsigned int q_count, i;
+ unsigned int regval;
+
+ q_count = max(pdata->hw_feat.tx_q_cnt, pdata->hw_feat.rx_q_cnt);
+ for (i = 0; i < q_count; i++) {
+ /* No MTL interrupts to be enabled */
+ regval = 0;
+
+ /* Clear all the interrupts which are set */
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_ICR_RXOVFIS_POS,
+ MTL_ICR_RXOVFIS_LEN,
+ 1);
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_ICR_ABPSIS_POS,
+ MTL_ICR_ABPSIS_LEN,
+ 1);
+ regval = GMAC_SET_REG_BITS(regval,
+ MTL_ICR_TXUNFIS_POS,
+ MTL_ICR_TXUNFIS_LEN,
+ 1);
+ GMAC_IOWRITE(pdata, MTL_Q_ICSR(i), regval);
+ }
+}
+
+static void gmac_enable_mac_interrupts(struct gmac_pdata *pdata)
+{
+ unsigned int mac_ier = 0;
+
+ /* Enable RGMII interrupt */
+ mac_ier = GMAC_SET_REG_BITS(mac_ier, MAC_IER_RGMII_POS,
+ MAC_IER_RGMII_LEN, 1);
+ GMAC_IOWRITE(pdata, MAC_IER, mac_ier);
+
+ /* Enable all TX interrupts */
+ GMAC_IOWRITE(pdata, MMC_TIER, 0);
+ /* Enable all RX interrupts */
+ GMAC_IOWRITE(pdata, MMC_RIER, 0);
+ /* Enable MMC Rx Interrupts for IPC */
+ GMAC_IOWRITE(pdata, MMC_IPCER, 0);
+}
+
+static int gmac_set_gmii_10_speed(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MCR),
+ MAC_MCR_SS_POS, MAC_MCR_SS_LEN);
+ if (regval == 0x2)
+ return 0;
+
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_SS_POS,
+ MAC_MCR_SS_LEN, 0x2);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ return 0;
+}
+
+static int gmac_set_gmii_100_speed(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MCR),
+ MAC_MCR_SS_POS, MAC_MCR_SS_LEN);
+ if (regval == 0x3)
+ return 0;
+
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_SS_POS,
+ MAC_MCR_SS_LEN, 0x3);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ return 0;
+}
+
+static int gmac_set_gmii_1000_speed(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MCR),
+ MAC_MCR_SS_POS, MAC_MCR_SS_LEN);
+ if (regval == 0x0)
+ return 0;
+
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_SS_POS,
+ MAC_MCR_SS_LEN, 0x0);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ return 0;
+}
+
+static void gmac_config_mac_speed(struct gmac_pdata *pdata)
+{
+ switch (pdata->phy_speed) {
+ case SPEED_10:
+ gmac_set_gmii_10_speed(pdata);
+ break;
+
+ case SPEED_100:
+ gmac_set_gmii_100_speed(pdata);
+ break;
+
+ case SPEED_1000:
+ gmac_set_gmii_1000_speed(pdata);
+ break;
+ }
+}
+
+static int gmac_set_full_duplex(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MCR),
+ MAC_MCR_DM_POS, MAC_MCR_DM_LEN);
+ if (regval == 0x1)
+ return 0;
+
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_DM_POS,
+ MAC_MCR_DM_LEN, 0x1);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ return 0;
+}
+
+static int gmac_set_half_duplex(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MCR),
+ MAC_MCR_DM_POS, MAC_MCR_DM_LEN);
+ if (regval == 0x0)
+ return 0;
+
+ regval = GMAC_SET_REG_BITS(regval, MAC_MCR_DM_POS,
+ MAC_MCR_DM_LEN, 0x0);
+ GMAC_IOWRITE(pdata, MAC_MCR, regval);
+
+ return 0;
+}
+
+static int gmac_dev_read(struct gmac_channel *channel)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_ring *ring = channel->rx_ring;
+ struct net_device *netdev = pdata->netdev;
+ struct gmac_desc_data *desc_data, *next_data;
+ struct gmac_dma_desc *dma_desc, *next_desc;
+ struct gmac_pkt_info *pkt_info;
+ int ret;
+
+ desc_data = GMAC_GET_DESC_DATA(ring, ring->cur);
+ dma_desc = desc_data->dma_desc;
+ pkt_info = &ring->pkt_info;
+
+ /* Check for data availability */
+ if (GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_OWN_POS,
+ RX_NORMAL_DESC3_OWN_LEN))
+ return 1;
+
+ /* Make sure descriptor fields are read after reading the OWN bit */
+ dma_rmb();
+
+ if (netif_msg_rx_status(pdata))
+ gmac_dump_rx_desc(pdata, ring, ring->cur);
+
+ /* Normal Descriptor, be sure Context Descriptor bit is off */
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_CONTEXT_POS,
+ RX_PACKET_ATTRIBUTES_CONTEXT_LEN,
+ 0);
+
+ /* Get the pkt_info length */
+ desc_data->trx.bytes = GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_PL_POS,
+ RX_NORMAL_DESC3_PL_LEN);
+
+ if (!GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_LD_POS,
+ RX_NORMAL_DESC3_LD_LEN)) {
+ /* Not all the data has been transferred for this pkt_info */
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_INCOMPLETE_POS,
+ RX_PACKET_ATTRIBUTES_INCOMPLETE_LEN,
+ 1);
+ return 0;
+ }
+
+ /* This is the last of the data for this pkt_info */
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_INCOMPLETE_POS,
+ RX_PACKET_ATTRIBUTES_INCOMPLETE_LEN,
+ 0);
+
+ /* Set checksum done indicator as appropriate */
+ if (netdev->features & NETIF_F_RXCSUM)
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_CSUM_DONE_POS,
+ RX_PACKET_ATTRIBUTES_CSUM_DONE_LEN,
+ 1);
+
+ if (GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_RS1V_POS,
+ RX_NORMAL_DESC3_RS1V_LEN)) {
+ if (GMAC_GET_REG_BITS_LE(dma_desc->desc1,
+ RX_NORMAL_DESC1_TSA_POS,
+ RX_NORMAL_DESC1_TSA_LEN)){
+ ring->cur++;
+
+ next_data = GMAC_GET_DESC_DATA(ring, ring->cur);
+ next_desc = next_data->dma_desc;
+
+ ret = gmac_get_rx_tstamp_status(pdata,
+ next_desc,
+ pkt_info);
+ if (ret == -EBUSY) {
+ ring->cur--;
+ return ret;
+ }
+ }
+
+ if (gmac_is_rx_csum_error(dma_desc))
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_CSUM_DONE_POS,
+ RX_PACKET_ATTRIBUTES_CSUM_DONE_LEN,
+ 0);
+ }
+
+ if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) {
+ if (gmac_is_rx_csum_valid(dma_desc)) {
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_VLAN_CTAG_POS,
+ RX_PACKET_ATTRIBUTES_VLAN_CTAG_LEN,
+ 1);
+ pkt_info->vlan_ctag = GMAC_GET_REG_BITS_LE(dma_desc->desc0,
+ RX_NORMAL_DESC0_OVT_POS,
+ RX_NORMAL_DESC0_OVT_LEN);
+ netif_dbg(pdata, rx_status, netdev, "vlan-ctag=%#06x\n",
+ pkt_info->vlan_ctag);
+ }
+ }
+
+ if (GMAC_GET_REG_BITS_LE(dma_desc->desc3,
+ RX_NORMAL_DESC3_ES_POS,
+ RX_NORMAL_DESC3_ES_LEN))
+ pkt_info->errors = GMAC_SET_REG_BITS(pkt_info->errors,
+ RX_PACKET_ERRORS_FRAME_POS,
+ RX_PACKET_ERRORS_FRAME_LEN,
+ 1);
+
+ netif_dbg(pdata, rx_status, netdev,
+ "%s - descriptor=%u (cur=%d)\n", channel->name,
+ ring->cur & (ring->dma_desc_count - 1), ring->cur);
+
+ return 0;
+}
+
+static int gmac_enable_int(struct gmac_channel *channel,
+ enum gmac_int int_id)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ unsigned int dma_ch_ier;
+
+ dma_ch_ier = GMAC_IOREAD(pdata, DMA_CH_IER(channel->queue_index));
+
+ switch (int_id) {
+ case GMAC_INT_DMA_CH_SR_TI:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_TIE_POS,
+ DMA_CH_IER_TIE_LEN, 1);
+ break;
+ case GMAC_INT_DMA_CH_SR_TPS:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_TXSE_POS,
+ DMA_CH_IER_TXSE_LEN, 1);
+ break;
+ case GMAC_INT_DMA_CH_SR_TBU:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_TBUE_POS,
+ DMA_CH_IER_TBUE_LEN, 1);
+ break;
+ case GMAC_INT_DMA_CH_SR_RI:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_RIE_POS,
+ DMA_CH_IER_RIE_LEN, 1);
+ break;
+ case GMAC_INT_DMA_CH_SR_RBU:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_RBUE_POS,
+ DMA_CH_IER_RBUE_LEN, 1);
+ break;
+ case GMAC_INT_DMA_CH_SR_RPS:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_RSE_POS,
+ DMA_CH_IER_RSE_LEN, 1);
+ break;
+ case GMAC_INT_DMA_CH_SR_TI_RI:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_TIE_POS,
+ DMA_CH_IER_TIE_LEN, 1);
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_RIE_POS,
+ DMA_CH_IER_RIE_LEN, 1);
+ break;
+ case GMAC_INT_DMA_CH_SR_FBE:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_FBEE_POS,
+ DMA_CH_IER_FBEE_LEN, 1);
+ break;
+ case GMAC_INT_DMA_ALL:
+ dma_ch_ier |= channel->saved_ier;
+ break;
+ default:
+ return -1;
+ }
+
+ GMAC_IOWRITE(pdata, DMA_CH_IER(channel->queue_index), dma_ch_ier);
+
+ return 0;
+}
+
+static int gmac_disable_int(struct gmac_channel *channel,
+ enum gmac_int int_id)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ unsigned int dma_ch_ier;
+
+ dma_ch_ier = GMAC_IOREAD(pdata, DMA_CH_IER(channel->queue_index));
+
+ switch (int_id) {
+ case GMAC_INT_DMA_CH_SR_TI:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_TIE_POS,
+ DMA_CH_IER_TIE_LEN, 0);
+ break;
+ case GMAC_INT_DMA_CH_SR_TPS:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_TXSE_POS,
+ DMA_CH_IER_TXSE_LEN, 0);
+ break;
+ case GMAC_INT_DMA_CH_SR_TBU:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_TBUE_POS,
+ DMA_CH_IER_TBUE_LEN, 0);
+ break;
+ case GMAC_INT_DMA_CH_SR_RI:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_RIE_POS,
+ DMA_CH_IER_RIE_LEN, 0);
+ break;
+ case GMAC_INT_DMA_CH_SR_RBU:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_RBUE_POS,
+ DMA_CH_IER_RBUE_LEN, 0);
+ break;
+ case GMAC_INT_DMA_CH_SR_RPS:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_RSE_POS,
+ DMA_CH_IER_RSE_LEN, 0);
+ break;
+ case GMAC_INT_DMA_CH_SR_TI_RI:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_TIE_POS,
+ DMA_CH_IER_TIE_LEN, 0);
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_RIE_POS,
+ DMA_CH_IER_RIE_LEN, 0);
+ break;
+ case GMAC_INT_DMA_CH_SR_FBE:
+ dma_ch_ier = GMAC_SET_REG_BITS(dma_ch_ier, DMA_CH_IER_FBEE_POS,
+ DMA_CH_IER_FBEE_LEN, 0);
+ break;
+ case GMAC_INT_DMA_ALL:
+ channel->saved_ier = dma_ch_ier & GMAC_DMA_INTERRUPT_MASK;
+ dma_ch_ier &= ~GMAC_DMA_INTERRUPT_MASK;
+ break;
+ default:
+ return -1;
+ }
+
+ GMAC_IOWRITE(pdata, DMA_CH_IER(channel->queue_index), dma_ch_ier);
+
+ return 0;
+}
+
+static int gmac_flush_tx_queues(struct gmac_pdata *pdata)
+{
+ unsigned int i;
+ u32 regval;
+ int limit;
+
+ for (i = 0; i < pdata->tx_q_count; i++) {
+ regval = GMAC_IOREAD(pdata, MTL_Q_TQOMR(i));
+ regval = GMAC_SET_REG_BITS(regval, MTL_Q_TQOMR_FTQ_POS,
+ MTL_Q_TQOMR_FTQ_LEN, 1);
+ GMAC_IOWRITE(pdata, MTL_Q_TQOMR(i), regval);
+ }
+
+ /* Poll Until Poll Condition */
+ for (i = 0; i < pdata->tx_q_count; i++) {
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MTL_Q_TQOMR(i)),
+ MTL_Q_TQOMR_FTQ_POS,
+ MTL_Q_TQOMR_FTQ_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static void gmac_config_dma_bus(struct gmac_pdata *pdata)
+{
+ u32 regval;
+
+ regval = GMAC_IOREAD(pdata, DMA_SBMR);
+ /* Set maximum read outstanding request limit*/
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_SBMR_WR_OSR_LMT_POS,
+ DMA_SBMR_WR_OSR_LMT_LEN,
+ DMA_SBMR_OSR_MAX);
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_SBMR_RD_OSR_LMT_POS,
+ DMA_SBMR_RD_OSR_LMT_LEN,
+ DMA_SBMR_OSR_MAX);
+ /* Set the System Bus mode */
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_SBMR_FB_POS,
+ DMA_SBMR_FB_LEN,
+ 0);
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_SBMR_BLEN_16_POS,
+ DMA_SBMR_BLEN_16_LEN,
+ 1);
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_SBMR_BLEN_8_POS,
+ DMA_SBMR_BLEN_8_LEN,
+ 1);
+ regval = GMAC_SET_REG_BITS(regval,
+ DMA_SBMR_BLEN_4_POS,
+ DMA_SBMR_BLEN_4_LEN,
+ 1);
+ GMAC_IOWRITE(pdata, DMA_SBMR, regval);
+}
+
+static int gmac_hw_init(struct gmac_pdata *pdata)
+{
+ struct gmac_desc_ops *desc_ops = &pdata->desc_ops;
+ int ret;
+
+ /* Flush Tx queues */
+ ret = gmac_flush_tx_queues(pdata);
+ if (ret)
+ return ret;
+
+ /* Initialize DMA related features */
+ gmac_config_dma_bus(pdata);
+ gmac_config_osp_mode(pdata);
+ gmac_config_pblx8(pdata);
+ gmac_config_tx_pbl_val(pdata);
+ gmac_config_rx_pbl_val(pdata);
+ gmac_config_rx_coalesce(pdata);
+ gmac_config_tx_coalesce(pdata);
+ gmac_config_rx_buffer_size(pdata);
+ gmac_config_tso_mode(pdata);
+ gmac_config_sph_mode(pdata);
+ desc_ops->tx_desc_init(pdata);
+ desc_ops->rx_desc_init(pdata);
+ gmac_enable_dma_interrupts(pdata);
+
+ /* Initialize MTL related features */
+ gmac_config_mtl_mode(pdata);
+ gmac_config_queue_mapping(pdata);
+ gmac_config_tsf_mode(pdata, pdata->tx_sf_mode);
+ gmac_config_rsf_mode(pdata, pdata->rx_sf_mode);
+ gmac_config_tx_threshold(pdata, pdata->tx_threshold);
+ gmac_config_rx_threshold(pdata, pdata->rx_threshold);
+ gmac_config_tx_fifo_size(pdata);
+ gmac_config_rx_fifo_size(pdata);
+ gmac_config_flow_control_threshold(pdata);
+ gmac_config_rx_fep_enable(pdata);
+ gmac_config_rx_fup_enable(pdata);
+ gmac_enable_mtl_interrupts(pdata);
+
+ /* Initialize MAC related features */
+ gmac_config_mac_address(pdata);
+ gmac_config_rx_mode(pdata);
+ gmac_config_jumbo_disable(pdata);
+ gmac_config_flow_control(pdata);
+ gmac_config_mac_speed(pdata);
+ gmac_config_checksum_offload(pdata);
+ gmac_config_vlan_support(pdata);
+ gmac_config_mmc(pdata);
+ gmac_enable_mac_interrupts(pdata);
+
+ return 0;
+}
+
+static int gmac_hw_exit(struct gmac_pdata *pdata)
+{
+ u32 regval;
+ int limit;
+
+ /* Issue a software reset */
+ regval = GMAC_IOREAD(pdata, DMA_MR);
+ regval = GMAC_SET_REG_BITS(regval, DMA_MR_SWR_POS,
+ DMA_MR_SWR_LEN, 1);
+ GMAC_IOWRITE(pdata, DMA_MR, regval);
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, DMA_MR),
+ DMA_MR_SWR_POS, DMA_MR_SWR_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+
+ return 0;
+}
+
+static void gmac_config_hw_timestamping(struct gmac_pdata *pdata,
+ u32 data)
+{
+ GMAC_IOWRITE(pdata, PTP_TCR, data);
+}
+
+static void gmac_config_sub_second_increment(struct gmac_pdata *pdata,
+ u32 ptp_clock,
+ u32 *ssinc)
+{
+ u32 value = GMAC_IOREAD(pdata, PTP_TCR);
+ unsigned long data;
+ u32 reg_value = 0;
+
+ /* Convert the ptp_clock to nano second
+ * formula = (1/ptp_clock) * 1000000000
+ * where ptp_clock is 50MHz if fine method is used to update system
+ */
+ if (GMAC_GET_REG_BITS(value,
+ PTP_TCR_TSCFUPDT_POS,
+ PTP_TCR_TSCFUPDT_LEN))
+ data = (1000000000ULL / 50000000);
+ else
+ data = (1000000000ULL / ptp_clock);
+
+ /* 0.465ns accuracy */
+ if (!GMAC_GET_REG_BITS(value,
+ PTP_TCR_TSCTRLSSR_POS,
+ PTP_TCR_TSCTRLSSR_LEN))
+ data = (data * 1000) / 465;
+
+ reg_value = GMAC_SET_REG_BITS(reg_value,
+ PTP_SSIR_SSINC_POS,
+ PTP_SSIR_SSINC_LEN,
+ data);
+
+ GMAC_IOWRITE(pdata, PTP_SSIR, reg_value);
+
+ if (ssinc)
+ *ssinc = data;
+}
+
+static int gmac_init_systime(struct gmac_pdata *pdata, u32 sec, u32 nsec)
+{
+ int limit;
+ u32 value;
+
+ GMAC_IOWRITE(pdata, PTP_STSUR, sec);
+ GMAC_IOWRITE(pdata, PTP_STNSUR, nsec);
+
+ /* issue command to initialize the system time value */
+ value = GMAC_IOREAD(pdata, PTP_TCR);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSINIT_POS,
+ PTP_TCR_TSINIT_LEN, 1);
+ GMAC_IOWRITE(pdata, PTP_TCR, value);
+
+ /* wait for present system time initialize to complete */
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, PTP_TCR),
+ PTP_TCR_TSINIT_POS, PTP_TCR_TSINIT_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+
+ return 0;
+}
+
+static int gmac_config_addend(struct gmac_pdata *pdata, u32 addend)
+{
+ u32 value;
+ int limit;
+
+ GMAC_IOWRITE(pdata, PTP_TAR, addend);
+ /* issue command to update the addend value */
+ value = GMAC_IOREAD(pdata, PTP_TCR);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSADDREG_POS,
+ PTP_TCR_TSADDREG_LEN, 1);
+ GMAC_IOWRITE(pdata, PTP_TCR, value);
+
+ /* wait for present addend update to complete */
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, PTP_TCR),
+ PTP_TCR_TSADDREG_POS,
+ PTP_TCR_TSADDREG_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+
+ return 0;
+}
+
+static int gmac_adjust_systime(struct gmac_pdata *pdata,
+ u32 sec,
+ u32 nsec,
+ int add_sub)
+{
+ u32 value;
+ int limit;
+
+ if (add_sub) {
+ /* If the new sec value needs to be subtracted with
+ * the system time, then MAC_STSUR reg should be
+ * programmed with (2^32 - <new_sec_value>)
+ */
+ sec = (0x100000000ULL - sec);
+
+ value = GMAC_IOREAD(pdata, PTP_TCR);
+ if (GMAC_GET_REG_BITS(value,
+ PTP_TCR_TSCTRLSSR_POS,
+ PTP_TCR_TSCTRLSSR_LEN))
+ nsec = (PTP_DIGITAL_ROLLOVER_MODE - nsec);
+ else
+ nsec = (PTP_BINARY_ROLLOVER_MODE - nsec);
+ }
+
+ GMAC_IOWRITE(pdata, PTP_STSUR, sec);
+
+ value = 0;
+ value = GMAC_SET_REG_BITS(value, PTP_STNSUR_ADDSUB_POS,
+ PTP_STNSUR_ADDSUB_LEN, add_sub);
+ value = GMAC_SET_REG_BITS(value, PTP_STNSUR_TSSSS_POS,
+ PTP_STNSUR_TSSSS_LEN, nsec);
+ GMAC_IOWRITE(pdata, PTP_STNSUR, value);
+
+ /* issue command to initialize the system time value */
+ value = GMAC_IOREAD(pdata, PTP_TCR);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSUPDT_POS,
+ PTP_TCR_TSUPDT_LEN, 1);
+ GMAC_IOWRITE(pdata, PTP_TCR, value);
+
+ /* wait for present system time adjust/update to complete */
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, PTP_TCR),
+ PTP_TCR_TSUPDT_POS, PTP_TCR_TSUPDT_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+
+ return 0;
+}
+
+static void gmac_get_systime(struct gmac_pdata *pdata, u64 *systime)
+{
+ u64 ns;
+
+ /* Get the TSSS value */
+ ns = GMAC_IOREAD(pdata, PTP_STNSR);
+ /* Get the TSS and convert sec time value to nanosecond */
+ ns += GMAC_IOREAD(pdata, PTP_STSR) * 1000000000ULL;
+
+ if (systime)
+ *systime = ns;
+}
+
+static int gmac_get_tx_timestamp_status(struct gmac_dma_desc *dma_desc)
+{
+ return GMAC_GET_REG_BITS_LE(dma_desc->desc0,
+ TX_NORMAL_DESC3_TTSS_POS,
+ TX_NORMAL_DESC3_TTSS_LEN);
+}
+
+static void gmac_get_tx_timestamp(struct gmac_dma_desc *desc, u64 *ts)
+{
+ u64 ns;
+
+ ns = desc->desc0;
+ /* convert high/sec time stamp value to nanosecond */
+ ns += (desc->desc1 * 1000000000ULL);
+
+ *ts = ns;
+}
+
+static void gmac_get_tx_hwtstamp(struct gmac_pdata *pdata,
+ struct gmac_dma_desc *desc,
+ struct sk_buff *skb)
+{
+ struct skb_shared_hwtstamps shhwtstamp;
+ u64 ns;
+
+ if (!pdata->hwts_tx_en)
+ return;
+
+ /* exit if skb doesn't support hw tstamp */
+ if (likely(!skb || !(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)))
+ return;
+
+ /* check tx tstamp status */
+ if (gmac_get_tx_timestamp_status(desc)) {
+ /* get the valid tstamp */
+ gmac_get_tx_timestamp(desc, &ns);
+
+ memset(&shhwtstamp, 0, sizeof(struct skb_shared_hwtstamps));
+ shhwtstamp.hwtstamp = ns_to_ktime(ns);
+
+ netdev_dbg(pdata->netdev,
+ "get valid TX hw timestamp %llu\n",
+ ns);
+ /* pass tstamp to stack */
+ skb_tstamp_tx(skb, &shhwtstamp);
+ pdata->stats.tx_timestamp_packets++;
+ }
+}
+
+void gmac_init_hw_ops(struct gmac_hw_ops *hw_ops)
+{
+ hw_ops->init = gmac_hw_init;
+ hw_ops->exit = gmac_hw_exit;
+
+ hw_ops->tx_complete = gmac_tx_complete;
+
+ hw_ops->enable_tx = gmac_enable_tx;
+ hw_ops->disable_tx = gmac_disable_tx;
+ hw_ops->enable_rx = gmac_enable_rx;
+ hw_ops->disable_rx = gmac_disable_rx;
+
+ hw_ops->dev_xmit = gmac_dev_xmit;
+ hw_ops->dev_read = gmac_dev_read;
+ hw_ops->enable_int = gmac_enable_int;
+ hw_ops->disable_int = gmac_disable_int;
+
+ hw_ops->set_mac_address = gmac_set_mac_address;
+ hw_ops->config_rx_mode = gmac_config_rx_mode;
+ hw_ops->enable_rx_csum = gmac_enable_rx_csum;
+ hw_ops->disable_rx_csum = gmac_disable_rx_csum;
+
+ /* For MII speed configuration */
+ hw_ops->set_gmii_10_speed = gmac_set_gmii_10_speed;
+ hw_ops->set_gmii_100_speed = gmac_set_gmii_100_speed;
+ hw_ops->set_gmii_1000_speed = gmac_set_gmii_1000_speed;
+
+ hw_ops->set_full_duplex = gmac_set_full_duplex;
+ hw_ops->set_half_duplex = gmac_set_half_duplex;
+
+ /* For descriptor related operation */
+ hw_ops->tx_desc_init = gmac_tx_desc_init;
+ hw_ops->rx_desc_init = gmac_rx_desc_init;
+ hw_ops->tx_desc_reset = gmac_tx_desc_reset;
+ hw_ops->rx_desc_reset = gmac_rx_desc_reset;
+ hw_ops->is_last_desc = gmac_is_last_desc;
+ hw_ops->is_context_desc = gmac_is_context_desc;
+ hw_ops->tx_start_xmit = gmac_tx_start_xmit;
+
+ /* For Flow Control */
+ hw_ops->config_tx_flow_control = gmac_config_tx_flow_control;
+ hw_ops->config_rx_flow_control = gmac_config_rx_flow_control;
+
+ /* For Vlan related config */
+ hw_ops->enable_rx_vlan_stripping = gmac_enable_rx_vlan_stripping;
+ hw_ops->disable_rx_vlan_stripping = gmac_disable_rx_vlan_stripping;
+ hw_ops->enable_rx_vlan_filtering = gmac_enable_rx_vlan_filtering;
+ hw_ops->disable_rx_vlan_filtering = gmac_disable_rx_vlan_filtering;
+ hw_ops->update_vlan_hash_table = gmac_update_vlan_hash_table;
+ hw_ops->update_vlan = gmac_update_vlan;
+
+ /* For RX coalescing */
+ hw_ops->config_rx_coalesce = gmac_config_rx_coalesce;
+ hw_ops->config_tx_coalesce = gmac_config_tx_coalesce;
+ hw_ops->usec_to_riwt = gmac_usec_to_riwt;
+ hw_ops->riwt_to_usec = gmac_riwt_to_usec;
+
+ /* For RX and TX threshold config */
+ hw_ops->config_rx_threshold = gmac_config_rx_threshold;
+ hw_ops->config_tx_threshold = gmac_config_tx_threshold;
+
+ /* For RX and TX Store and Forward Mode config */
+ hw_ops->config_rsf_mode = gmac_config_rsf_mode;
+ hw_ops->config_tsf_mode = gmac_config_tsf_mode;
+
+ /* For TX DMA Operating on Second Frame config */
+ hw_ops->config_osp_mode = gmac_config_osp_mode;
+
+ /* For RX and TX PBL config */
+ hw_ops->config_rx_pbl_val = gmac_config_rx_pbl_val;
+ hw_ops->config_tx_pbl_val = gmac_config_tx_pbl_val;
+ hw_ops->config_pblx8 = gmac_config_pblx8;
+
+ /* For MMC statistics support */
+ hw_ops->tx_mmc_int = gmac_tx_mmc_int;
+ hw_ops->rx_mmc_int = gmac_rx_mmc_int;
+ hw_ops->rxipc_mmc_int = gmac_rxipc_mmc_int;
+ hw_ops->read_mmc_stats = gmac_read_mmc_stats;
+
+ /* For HW timestamping */
+ hw_ops->config_hw_timestamping = gmac_config_hw_timestamping;
+ hw_ops->config_sub_second_increment = gmac_config_sub_second_increment;
+ hw_ops->init_systime = gmac_init_systime;
+ hw_ops->config_addend = gmac_config_addend;
+ hw_ops->adjust_systime = gmac_adjust_systime;
+ hw_ops->get_systime = gmac_get_systime;
+ hw_ops->get_tx_hwtstamp = gmac_get_tx_hwtstamp;
+}
+
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-mdio.c b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-mdio.c
new file mode 100644
index 0000000..2088498
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-mdio.c
@@ -0,0 +1,274 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2018 MediaTek Inc.
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/mii.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_mdio.h>
+#include <linux/phy.h>
+#include <linux/slab.h>
+
+#include "mtk-gmac.h"
+
+static int gmac_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
+{
+ struct net_device *ndev = bus->priv;
+ struct gmac_pdata *pdata = netdev_priv(ndev);
+ int data;
+ u32 value = 0;
+ int limit;
+
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_PA_POS,
+ MAC_MDIOAR_PA_LEN, phyaddr);
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_RDA_POS,
+ MAC_MDIOAR_RDA_LEN, phyreg);
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_CR_POS,
+ MAC_MDIOAR_CR_LEN, 0);
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_GOC_POS,
+ MAC_MDIOAR_GOC_LEN, 3);
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_GB_POS,
+ MAC_MDIOAR_GB_LEN, 1);
+
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MDIOAR),
+ MAC_MDIOAR_GB_POS,
+ MAC_MDIOAR_GB_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+
+ GMAC_IOWRITE(pdata, MAC_MDIOAR, value);
+
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MDIOAR),
+ MAC_MDIOAR_GB_POS,
+ MAC_MDIOAR_GB_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+
+ /* Read the data from the MII data register */
+ data = (int)GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MDIODR),
+ MAC_MDIODR_GD_POS,
+ MAC_MDIODR_GD_LEN);
+
+ return data;
+}
+
+static int gmac_mdio_write(struct mii_bus *bus,
+ int phyaddr,
+ int phyreg,
+ u16 phydata)
+{
+ struct net_device *ndev = bus->priv;
+ struct gmac_pdata *pdata = netdev_priv(ndev);
+ u32 value = 0;
+ int limit;
+
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_PA_POS,
+ MAC_MDIOAR_PA_LEN, phyaddr);
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_RDA_POS,
+ MAC_MDIOAR_RDA_LEN, phyreg);
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_CR_POS,
+ MAC_MDIOAR_CR_LEN, 0);
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_GOC_POS,
+ MAC_MDIOAR_GOC_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, MAC_MDIOAR_GB_POS,
+ MAC_MDIOAR_GB_LEN, 1);
+
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MDIOAR),
+ MAC_MDIOAR_GB_POS,
+ MAC_MDIOAR_GB_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+
+ /* Set the MII address register to write */
+ GMAC_IOWRITE(pdata, MAC_MDIODR, phydata);
+ GMAC_IOWRITE(pdata, MAC_MDIOAR, value);
+
+ limit = 10;
+ while (limit-- &&
+ GMAC_GET_REG_BITS(GMAC_IOREAD(pdata, MAC_MDIOAR),
+ MAC_MDIOAR_GB_POS,
+ MAC_MDIOAR_GB_LEN))
+ mdelay(10);
+
+ if (limit < 0)
+ return -EBUSY;
+
+ return 0;
+}
+
+static int gmac_mdio_reset(struct mii_bus *bus)
+{
+ struct net_device *ndev = bus->priv;
+ struct gmac_pdata *pdata = netdev_priv(ndev);
+
+ gpio_direction_output(pdata->phy_rst, 0);
+
+ msleep(20);
+
+ gpio_direction_output(pdata->phy_rst, 1);
+
+ return 0;
+}
+
+static void adjust_link(struct net_device *ndev)
+{
+ struct gmac_pdata *pdata = netdev_priv(ndev);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct phy_device *phydev = pdata->phydev;
+
+ if (!phydev)
+ return;
+
+ if (phydev->link) {
+ /* Now we make sure that we can be in full duplex mode.
+ * If not, we operate in half-duplex mode
+ */
+ if (phydev->duplex)
+ hw_ops->set_full_duplex(pdata);
+ else
+ hw_ops->set_full_duplex(pdata);
+
+ switch (phydev->speed) {
+ case SPEED_1000:
+ hw_ops->set_gmii_1000_speed(pdata);
+ break;
+ case SPEED_100:
+ hw_ops->set_gmii_100_speed(pdata);
+ break;
+ case SPEED_10:
+ hw_ops->set_gmii_10_speed(pdata);
+ break;
+ }
+ }
+}
+
+static int init_phy(struct net_device *ndev)
+{
+ struct gmac_pdata *pdata = netdev_priv(ndev);
+ struct phy_device *phydev = NULL;
+ char phy_id_fmt[MII_BUS_ID_SIZE + 3];
+ char bus_id[MII_BUS_ID_SIZE];
+
+ snprintf(bus_id, MII_BUS_ID_SIZE, "mtk_gmac-%x", pdata->bus_id);
+
+ snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3,
+ PHY_ID_FMT, bus_id,
+ pdata->phyaddr);
+
+ phydev = phy_connect(ndev, phy_id_fmt, &adjust_link,
+ pdata->plat->phy_mode);
+ if (IS_ERR(phydev)) {
+ dev_err(pdata->dev, "%s: Could not attach to PHY\n", ndev->name);
+ return PTR_ERR(phydev);
+ }
+
+ if (phydev->phy_id == 0) {
+ phy_disconnect(phydev);
+ return -ENODEV;
+ }
+
+ if (pdata->plat->phy_mode == PHY_INTERFACE_MODE_GMII) {
+ phydev->supported = PHY_GBIT_FEATURES;
+ } else if ((pdata->plat->phy_mode == PHY_INTERFACE_MODE_MII) ||
+ (pdata->plat->phy_mode == PHY_INTERFACE_MODE_RMII)) {
+ phydev->supported = PHY_BASIC_FEATURES;
+ }
+
+ phydev->advertising = phydev->supported;
+
+ pdata->phydev = phydev;
+ phy_start(pdata->phydev);
+
+ return 0;
+}
+
+int mdio_register(struct net_device *ndev)
+{
+ struct gmac_pdata *pdata = netdev_priv(ndev);
+ struct mii_bus *new_bus = NULL;
+ int phyaddr = 0;
+ unsigned short phy_detected = 0;
+ int ret = 0;
+
+ new_bus = mdiobus_alloc();
+ if (!new_bus)
+ return -ENOMEM;
+
+ pdata->bus_id = 0x1;
+ new_bus->name = "mtk_gmac";
+ new_bus->read = gmac_mdio_read;
+ new_bus->write = gmac_mdio_write;
+ new_bus->reset = gmac_mdio_reset;
+ snprintf(new_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+ new_bus->name, pdata->bus_id);
+ new_bus->priv = ndev;
+ new_bus->phy_mask = 0;
+ new_bus->parent = pdata->dev;
+
+ ret = mdiobus_register(new_bus);
+ if (ret != 0) {
+ dev_err(pdata->dev, "%s: Cannot register as MDIO bus\n", new_bus->name);
+ mdiobus_free(new_bus);
+ return ret;
+ }
+ pdata->mii = new_bus;
+
+ for (phyaddr = 0; phyaddr < PHY_MAX_ADDR; phyaddr++) {
+ struct phy_device *phydev = mdiobus_get_phy(new_bus, phyaddr);
+
+ if (!phydev)
+ continue;
+
+ pdata->phyaddr = phyaddr;
+
+ phy_attached_info(phydev);
+ phy_detected = 1;
+ }
+ if (!phy_detected) {
+ dev_warn(pdata->dev, "No PHY found\n");
+ ret = -ENODEV;
+ goto err_out_phy_connect;
+ }
+
+ ret = init_phy(ndev);
+ if (unlikely(ret)) {
+ dev_err(pdata->dev, "Cannot attach to PHY (error: %d)\n", ret);
+ goto err_out_phy_connect;
+ }
+
+ return ret;
+
+ err_out_phy_connect:
+ mdiobus_unregister(new_bus);
+ mdiobus_free(new_bus);
+ return ret;
+}
+
+void mdio_unregister(struct net_device *ndev)
+{
+ struct gmac_pdata *pdata = netdev_priv(ndev);
+
+ if (pdata->phydev) {
+ phy_stop(pdata->phydev);
+ phy_disconnect(pdata->phydev);
+ pdata->phydev = NULL;
+ }
+
+ mdiobus_unregister(pdata->mii);
+ pdata->mii->priv = NULL;
+ mdiobus_free(pdata->mii);
+ pdata->mii = NULL;
+}
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-net.c b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-net.c
new file mode 100644
index 0000000..ea504e3
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-net.c
@@ -0,0 +1,1638 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2018 MediaTek Inc.
+#include <linux/netdevice.h>
+#include <linux/tcp.h>
+#include <linux/interrupt.h>
+
+#include "mtk-gmac.h"
+
+static int gmac_one_poll(struct napi_struct *, int);
+static int gmac_all_poll(struct napi_struct *, int);
+
+static inline unsigned int gmac_tx_avail_desc(struct gmac_ring *ring)
+{
+ return (ring->dma_desc_count - (ring->cur - ring->dirty));
+}
+
+static inline unsigned int gmac_rx_dirty_desc(struct gmac_ring *ring)
+{
+ return (ring->cur - ring->dirty);
+}
+
+static int gmac_maybe_stop_tx_queue(struct gmac_channel *channel,
+ struct gmac_ring *ring,
+ unsigned int count)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+
+ if (count > gmac_tx_avail_desc(ring)) {
+ netif_info(pdata, drv, pdata->netdev,
+ "Tx queue stopped, not enough descriptors available\n");
+ netif_stop_subqueue(pdata->netdev, channel->queue_index);
+ ring->tx.queue_stopped = 1;
+
+ /* If we haven't notified the hardware because of xmit_more
+ * support, tell it now
+ */
+ if (ring->tx.xmit_more)
+ pdata->hw_ops.tx_start_xmit(channel, ring);
+
+ return NETDEV_TX_BUSY;
+ }
+
+ return 0;
+}
+
+static void gmac_prep_vlan(struct sk_buff *skb,
+ struct gmac_pkt_info *pkt_info)
+{
+ if (skb_vlan_tag_present(skb))
+ pkt_info->vlan_ctag = skb_vlan_tag_get(skb);
+}
+
+static int gmac_prep_tso(struct gmac_pdata *pdata,
+ struct sk_buff *skb,
+ struct gmac_pkt_info *pkt_info)
+{
+ int ret;
+
+ if (!GMAC_GET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_TSO_ENABLE_POS,
+ TX_PACKET_ATTRIBUTES_TSO_ENABLE_LEN))
+ return 0;
+
+ ret = skb_cow_head(skb, 0);
+ if (ret)
+ return ret;
+
+ pkt_info->header_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ pkt_info->tcp_header_len = tcp_hdrlen(skb);
+ pkt_info->tcp_payload_len = skb->len - pkt_info->header_len;
+ pkt_info->mss = skb_shinfo(skb)->gso_size;
+
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "header_len=%u\n", pkt_info->header_len);
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "tcp_header_len=%u, tcp_payload_len=%u\n",
+ pkt_info->tcp_header_len, pkt_info->tcp_payload_len);
+ netif_dbg(pdata, tx_queued, pdata->netdev, "mss=%u\n", pkt_info->mss);
+
+ /* Update the number of packets that will ultimately be transmitted
+ * along with the extra bytes for each extra packet
+ */
+ pkt_info->tx_packets = skb_shinfo(skb)->gso_segs;
+ pkt_info->tx_bytes +=
+ (pkt_info->tx_packets - 1) * pkt_info->header_len;
+
+ return 0;
+}
+
+static int gmac_is_tso(struct sk_buff *skb)
+{
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ return 0;
+
+ if (!skb_is_gso(skb))
+ return 0;
+
+ return 1;
+}
+
+static void gmac_prep_tx_pkt(struct gmac_pdata *pdata,
+ struct gmac_ring *ring,
+ struct sk_buff *skb,
+ struct gmac_pkt_info *pkt_info)
+{
+ struct skb_frag_struct *frag;
+ unsigned int context_desc;
+ unsigned int len;
+ unsigned int i;
+
+ pkt_info->skb = skb;
+
+ context_desc = 0;
+ pkt_info->desc_count = 0;
+
+ pkt_info->tx_packets = 1;
+ pkt_info->tx_bytes = skb->len;
+
+ if (gmac_is_tso(skb)) {
+ /* TSO requires an extra descriptor if mss is different */
+ if (skb_shinfo(skb)->gso_size != ring->tx.cur_mss) {
+ context_desc = 1;
+ pkt_info->desc_count++;
+ }
+
+ /* TSO requires an extra descriptor for TSO header */
+ pkt_info->desc_count++;
+
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_TSO_ENABLE_POS,
+ TX_PACKET_ATTRIBUTES_TSO_ENABLE_LEN,
+ 1);
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_CSUM_ENABLE_POS,
+ TX_PACKET_ATTRIBUTES_CSUM_ENABLE_LEN,
+ 1);
+ } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_CSUM_ENABLE_POS,
+ TX_PACKET_ATTRIBUTES_CSUM_ENABLE_LEN,
+ 1);
+ }
+
+ if (skb_vlan_tag_present(skb)) {
+ /* VLAN requires an extra descriptor if tag is different */
+ if (skb_vlan_tag_get(skb) != ring->tx.cur_vlan_ctag)
+ /* We can share with the TSO context descriptor */
+ if (!context_desc) {
+ context_desc = 1;
+ pkt_info->desc_count++;
+ }
+
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_VLAN_CTAG_POS,
+ TX_PACKET_ATTRIBUTES_VLAN_CTAG_LEN,
+ 1);
+ }
+
+ if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
+ pdata->hw_feat.ts_src &&
+ pdata->hwts_tx_en)) {
+ /* declare that device is doing timestamping */
+ skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+ pkt_info->attributes = GMAC_SET_REG_BITS(pkt_info->attributes,
+ TX_PACKET_ATTRIBUTES_PTP_POS,
+ TX_PACKET_ATTRIBUTES_PTP_LEN,
+ 1);
+ }
+
+ for (len = skb_headlen(skb); len;) {
+ pkt_info->desc_count++;
+ len -= min_t(unsigned int, len, GMAC_TX_MAX_BUF_SIZE);
+ }
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ frag = &skb_shinfo(skb)->frags[i];
+ for (len = skb_frag_size(frag); len; ) {
+ pkt_info->desc_count++;
+ len -= min_t(unsigned int, len, GMAC_TX_MAX_BUF_SIZE);
+ }
+ }
+}
+
+static int gmac_calc_rx_buf_size(struct net_device *netdev, unsigned int mtu)
+{
+ unsigned int rx_buf_size;
+
+ if (mtu > ETH_DATA_LEN) {
+ netdev_alert(netdev, "MTU exceeds maximum supported value\n");
+ return -EINVAL;
+ }
+
+ rx_buf_size = mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
+
+ return rx_buf_size;
+}
+
+static void gmac_enable_rx_tx_ints(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct gmac_channel *channel;
+ enum gmac_int int_id;
+ unsigned int i;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (channel->tx_ring && channel->rx_ring)
+ int_id = GMAC_INT_DMA_CH_SR_TI_RI;
+ else if (channel->tx_ring)
+ int_id = GMAC_INT_DMA_CH_SR_TI;
+ else if (channel->rx_ring)
+ int_id = GMAC_INT_DMA_CH_SR_RI;
+ else
+ continue;
+
+ hw_ops->enable_int(channel, int_id);
+ }
+}
+
+static void gmac_disable_rx_tx_ints(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct gmac_channel *channel;
+ enum gmac_int int_id;
+ unsigned int i;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (channel->tx_ring && channel->rx_ring)
+ int_id = GMAC_INT_DMA_CH_SR_TI_RI;
+ else if (channel->tx_ring)
+ int_id = GMAC_INT_DMA_CH_SR_TI;
+ else if (channel->rx_ring)
+ int_id = GMAC_INT_DMA_CH_SR_RI;
+ else
+ continue;
+
+ hw_ops->disable_int(channel, int_id);
+ }
+}
+
+static void gmac_rgsmii(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct net_device *ndev = pdata->netdev;
+ u32 status, duplex;
+
+ status = GMAC_IOREAD(pdata, MAC_PCSR);
+ if (GMAC_GET_REG_BITS(status, MAC_RGMII_LNKSTS_POS,
+ MAC_RGMII_LNKSTS_LEN)) {
+ int speed_value;
+
+ speed_value = GMAC_GET_REG_BITS(status,
+ MAC_RGMII_SPEED_POS,
+ MAC_RGMII_SPEED_LEN);
+ if (speed_value == GMAC_RGSMIIIS_SPEED_125) {
+ hw_ops->set_gmii_1000_speed(pdata);
+ pdata->phy_speed = SPEED_1000;
+ } else if (speed_value == GMAC_RGSMIIIS_SPEED_25) {
+ hw_ops->set_gmii_100_speed(pdata);
+ pdata->phy_speed = SPEED_100;
+ } else {
+ hw_ops->set_gmii_10_speed(pdata);
+ pdata->phy_speed = SPEED_10;
+ }
+
+ duplex = GMAC_GET_REG_BITS(status,
+ MAC_RGMII_LNKMODE_POS,
+ MAC_RGMII_LNKMODE_LEN);
+ if (duplex) {
+ hw_ops->set_full_duplex(pdata);
+ pdata->phy_speed = DUPLEX_FULL;
+ } else {
+ hw_ops->set_half_duplex(pdata);
+ pdata->phy_speed = DUPLEX_HALF;
+ }
+
+ netif_carrier_on(ndev);
+ } else {
+ netif_carrier_off(ndev);
+ }
+}
+
+static int gmac_hw_dma_interrupt(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int dma_isr, dma_ch_isr;
+ int ret = 0, i;
+
+ dma_isr = GMAC_IOREAD(pdata, DMA_ISR);
+
+ /* Handle DMA interrupts */
+ for (i = 0; i < pdata->channel_count; i++) {
+ if (!(dma_isr & (1 << i)))
+ continue;
+
+ channel = pdata->channel_head + i;
+
+ dma_ch_isr =
+ GMAC_IOREAD(pdata, DMA_CH_SR(channel->queue_index));
+ netif_dbg(pdata, intr, pdata->netdev, "DMA_CH%u_ISR=%#010x\n",
+ i, dma_ch_isr);
+
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_AIS_POS,
+ DMA_CH_ISR_AIS_LEN)) {
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_TPS_POS,
+ DMA_CH_ISR_TPS_LEN))
+ pdata->stats.tx_process_stopped++;
+
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_RPS_POS,
+ DMA_CH_ISR_RPS_LEN))
+ pdata->stats.rx_process_stopped++;
+
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_TBU_POS,
+ DMA_CH_ISR_TBU_LEN))
+ pdata->stats.tx_buffer_unavailable++;
+
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_RBU_POS,
+ DMA_CH_ISR_RBU_LEN))
+ pdata->stats.rx_buffer_unavailable++;
+
+ /* Restart the device on a Fatal Bus Error */
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_FBE_POS,
+ DMA_CH_ISR_FBE_LEN)) {
+ pdata->stats.fatal_bus_error++;
+ schedule_work(&pdata->restart_work);
+ ret = tx_hard_error;
+ }
+ }
+
+ /* TX/RX NORMAL interrupts */
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_NIS_POS,
+ DMA_CH_ISR_NIS_LEN)) {
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_RI_POS,
+ DMA_CH_ISR_RI_LEN)) {
+ ret |= handle_rx;
+ }
+ if (GMAC_GET_REG_BITS(dma_ch_isr,
+ DMA_CH_ISR_TI_POS,
+ DMA_CH_ISR_TI_LEN))
+ ret |= handle_tx;
+ }
+
+ /* Clear the interrupt by writing a logic 1 to the CSR5[15-0] */
+ GMAC_IOWRITE(pdata,
+ DMA_CH_SR(channel->queue_index),
+ dma_ch_isr & 0x1ffff);
+ }
+
+ return ret;
+}
+
+static void gmac_dma_interrupt(struct gmac_pdata *pdata)
+{
+ int status;
+
+ status = gmac_hw_dma_interrupt(pdata);
+
+ if (!pdata->per_channel_irq &&
+ likely((status & handle_rx) || (status & handle_tx)))
+ if (likely(napi_schedule_prep(&pdata->napi))) {
+ gmac_disable_rx_tx_ints(pdata);
+ pdata->stats.napi_poll_isr++;
+ /* Turn on polling */
+ __napi_schedule_irqoff(&pdata->napi);
+ }
+}
+
+static irqreturn_t gmac_isr(int irq, void *data)
+{
+ unsigned int dma_isr, mac_isr;
+ struct gmac_pdata *pdata = data;
+ struct gmac_hw_ops *hw_ops;
+
+ hw_ops = &pdata->hw_ops;
+
+ /* The DMA interrupt status register also reports MAC and MTL
+ * interrupts. So for polling mode, we just need to check for
+ * this register to be non-zero
+ */
+ dma_isr = GMAC_IOREAD(pdata, DMA_ISR);
+ if (!dma_isr)
+ return IRQ_HANDLED;
+
+ netif_dbg(pdata, intr, pdata->netdev, "DMA_ISR=%#010x\n", dma_isr);
+
+ if (GMAC_GET_REG_BITS(dma_isr, DMA_ISR_MACIS_POS,
+ DMA_ISR_MACIS_LEN)) {
+ mac_isr = GMAC_IOREAD(pdata, MAC_ISR);
+
+ if (GMAC_GET_REG_BITS(mac_isr,
+ MAC_ISR_MMCTXIS_POS,
+ MAC_ISR_MMCTXIS_LEN))
+ hw_ops->tx_mmc_int(pdata);
+
+ if (GMAC_GET_REG_BITS(mac_isr,
+ MAC_ISR_MMCRXIS_POS,
+ MAC_ISR_MMCRXIS_LEN))
+ hw_ops->rx_mmc_int(pdata);
+
+ if (GMAC_GET_REG_BITS(mac_isr,
+ MAC_ISR_MMCRXIPIS_POS,
+ MAC_ISR_MMCRXIPIS_LEN))
+ hw_ops->rxipc_mmc_int(pdata);
+
+ if (GMAC_GET_REG_BITS(mac_isr,
+ MAC_ISR_RGSMIIS_POS,
+ MAC_ISR_RGSMIIS_LEN))
+ gmac_rgsmii(pdata);
+ }
+
+ gmac_dma_interrupt(pdata);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t gmac_dma_isr(int irq, void *data)
+{
+ struct gmac_channel *channel = data;
+
+ /* Per channel DMA interrupts are enabled, so we use the per
+ * channel napi structure and not the private data napi structure
+ */
+ if (napi_schedule_prep(&channel->napi)) {
+ /* Disable Tx and Rx interrupts */
+ disable_irq_nosync(channel->dma_irq);
+
+ /* Turn on polling */
+ __napi_schedule_irqoff(&channel->napi);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void gmac_tx_timer(struct timer_list *t)
+{
+ struct gmac_channel *channel = from_timer(channel, t, tx_timer);
+ struct gmac_pdata *pdata = channel->pdata;
+ struct napi_struct *napi;
+
+ napi = (pdata->per_channel_irq) ? &channel->napi : &pdata->napi;
+
+ if (napi_schedule_prep(napi)) {
+ /* Disable Tx and Rx interrupts */
+ if (pdata->per_channel_irq)
+ disable_irq_nosync(channel->dma_irq);
+ else
+ gmac_disable_rx_tx_ints(pdata);
+
+ pdata->stats.napi_poll_txtimer++;
+ /* Turn on polling */
+ __napi_schedule(napi);
+ }
+
+ channel->tx_timer_active = 0;
+}
+
+static void gmac_init_timers(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->tx_ring)
+ break;
+
+ timer_setup(&channel->tx_timer, gmac_tx_timer, 0);
+ }
+}
+
+static void gmac_stop_timers(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->tx_ring)
+ break;
+
+ del_timer_sync(&channel->tx_timer);
+ }
+}
+
+static void gmac_napi_enable(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+
+ if (pdata->per_channel_irq) {
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ netif_napi_add(pdata->netdev,
+ &channel->napi,
+ gmac_one_poll,
+ NAPI_POLL_WEIGHT);
+
+ napi_enable(&channel->napi);
+ }
+ } else {
+ netif_napi_add(pdata->netdev,
+ &pdata->napi,
+ gmac_all_poll,
+ NAPI_POLL_WEIGHT);
+
+ napi_enable(&pdata->napi);
+ }
+}
+
+static void gmac_napi_disable(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+
+ if (pdata->per_channel_irq) {
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ napi_disable(&channel->napi);
+
+ netif_napi_del(&channel->napi);
+ }
+ } else {
+ napi_disable(&pdata->napi);
+
+ netif_napi_del(&pdata->napi);
+ }
+}
+
+static int gmac_request_irqs(struct gmac_pdata *pdata)
+{
+ struct net_device *netdev = pdata->netdev;
+ struct gmac_channel *channel;
+ unsigned int i;
+ int ret;
+
+ ret = devm_request_irq(pdata->dev, pdata->dev_irq, gmac_isr,
+ IRQF_SHARED, netdev->name, pdata);
+ if (ret) {
+ netdev_alert(netdev, "error requesting irq %d\n",
+ pdata->dev_irq);
+ return ret;
+ }
+
+ if (!pdata->per_channel_irq)
+ return 0;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ snprintf(channel->dma_irq_name,
+ sizeof(channel->dma_irq_name) - 1,
+ "%s-TxRx-%u", netdev_name(netdev),
+ channel->queue_index);
+
+ ret = devm_request_irq(pdata->dev, channel->dma_irq,
+ gmac_dma_isr, 0,
+ channel->dma_irq_name, channel);
+ if (ret) {
+ netdev_alert(netdev, "error requesting irq %d\n",
+ channel->dma_irq);
+ goto err_irq;
+ }
+ }
+
+ return 0;
+
+err_irq:
+ /* Using an unsigned int, 'i' will go to UINT_MAX and exit */
+ for (i--, channel--; i < pdata->channel_count; i--, channel--)
+ devm_free_irq(pdata->dev, channel->dma_irq, channel);
+
+ devm_free_irq(pdata->dev, pdata->dev_irq, pdata);
+
+ return ret;
+}
+
+static void gmac_free_irqs(struct gmac_pdata *pdata)
+{
+ struct gmac_channel *channel;
+ unsigned int i;
+
+ devm_free_irq(pdata->dev, pdata->dev_irq, pdata);
+
+ if (!pdata->per_channel_irq)
+ return;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++)
+ devm_free_irq(pdata->dev, channel->dma_irq, channel);
+}
+
+static void gmac_free_tx_data(struct gmac_pdata *pdata)
+{
+ struct gmac_desc_ops *desc_ops = &pdata->desc_ops;
+ struct gmac_desc_data *desc_data;
+ struct gmac_channel *channel;
+ struct gmac_ring *ring;
+ unsigned int i, j;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ ring = channel->tx_ring;
+ if (!ring)
+ break;
+
+ for (j = 0; j < ring->dma_desc_count; j++) {
+ desc_data = GMAC_GET_DESC_DATA(ring, j);
+ desc_ops->unmap_desc_data(pdata, desc_data, 1);
+ }
+ }
+}
+
+static void gmac_free_rx_data(struct gmac_pdata *pdata)
+{
+ struct gmac_desc_ops *desc_ops = &pdata->desc_ops;
+ struct gmac_desc_data *desc_data;
+ struct gmac_channel *channel;
+ struct gmac_ring *ring;
+ unsigned int i, j;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ ring = channel->rx_ring;
+ if (!ring)
+ break;
+
+ for (j = 0; j < ring->dma_desc_count; j++) {
+ desc_data = GMAC_GET_DESC_DATA(ring, j);
+ desc_ops->unmap_desc_data(pdata, desc_data, 0);
+ }
+ }
+}
+
+static int gmac_start(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct net_device *netdev = pdata->netdev;
+ int ret;
+
+ hw_ops->init(pdata);
+ gmac_napi_enable(pdata);
+
+ ret = gmac_request_irqs(pdata);
+ if (ret)
+ goto err_napi;
+
+ hw_ops->enable_tx(pdata);
+ hw_ops->enable_rx(pdata);
+ netif_tx_start_all_queues(netdev);
+
+ return 0;
+
+err_napi:
+ gmac_napi_disable(pdata);
+ hw_ops->exit(pdata);
+
+ return ret;
+}
+
+static void gmac_stop(struct gmac_pdata *pdata)
+{
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct net_device *netdev = pdata->netdev;
+ struct gmac_channel *channel;
+ struct netdev_queue *txq;
+ unsigned int i;
+
+ netif_tx_stop_all_queues(netdev);
+ gmac_stop_timers(pdata);
+ hw_ops->disable_tx(pdata);
+ hw_ops->disable_rx(pdata);
+ gmac_free_irqs(pdata);
+ gmac_napi_disable(pdata);
+ hw_ops->exit(pdata);
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ if (!channel->tx_ring)
+ continue;
+
+ txq = netdev_get_tx_queue(netdev, channel->queue_index);
+ netdev_tx_reset_queue(txq);
+ }
+}
+
+static void gmac_restart_dev(struct gmac_pdata *pdata)
+{
+ /* If not running, "restart" will happen on open */
+ if (!netif_running(pdata->netdev))
+ return;
+
+ gmac_stop(pdata);
+
+ gmac_free_tx_data(pdata);
+ gmac_free_rx_data(pdata);
+
+ gmac_start(pdata);
+}
+
+static void gmac_restart(struct work_struct *work)
+{
+ struct gmac_pdata *pdata = container_of(work,
+ struct gmac_pdata,
+ restart_work);
+
+ rtnl_lock();
+
+ gmac_restart_dev(pdata);
+
+ rtnl_unlock();
+}
+
+static int gmac_open(struct net_device *netdev)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_desc_ops *desc_ops;
+ int ret;
+
+ desc_ops = &pdata->desc_ops;
+
+ /* Calculate the Rx buffer size before allocating rings */
+ ret = gmac_calc_rx_buf_size(netdev, netdev->mtu);
+ if (ret < 0)
+ return ret;
+ pdata->rx_buf_size = ret;
+
+ /* Allocate the channels and rings */
+ ret = desc_ops->alloc_channles_and_rings(pdata);
+ if (ret)
+ return ret;
+
+ INIT_WORK(&pdata->restart_work, gmac_restart);
+ gmac_init_timers(pdata);
+
+ ret = gmac_start(pdata);
+ if (ret)
+ goto err_channels_and_rings;
+
+ return 0;
+
+err_channels_and_rings:
+ desc_ops->free_channels_and_rings(pdata);
+
+ return ret;
+}
+
+static int gmac_close(struct net_device *netdev)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_desc_ops *desc_ops;
+
+ desc_ops = &pdata->desc_ops;
+
+ /* Stop the device */
+ gmac_stop(pdata);
+
+ gmac_free_tx_data(pdata);
+ gmac_free_rx_data(pdata);
+
+ /* Free the channels and rings */
+ desc_ops->free_channels_and_rings(pdata);
+
+ return 0;
+}
+
+static void gmac_tx_timeout(struct net_device *netdev)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+
+ netdev_warn(netdev, "tx timeout, device restarting\n");
+ schedule_work(&pdata->restart_work);
+}
+
+static int gmac_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_pkt_info *tx_pkt_info;
+ struct gmac_desc_ops *desc_ops;
+ struct gmac_channel *channel;
+ struct gmac_hw_ops *hw_ops;
+ struct netdev_queue *txq;
+ struct gmac_ring *ring;
+ int ret;
+
+ desc_ops = &pdata->desc_ops;
+ hw_ops = &pdata->hw_ops;
+
+ netif_dbg(pdata, tx_queued, pdata->netdev,
+ "skb->len = %d\n", skb->len);
+
+ channel = pdata->channel_head + skb->queue_mapping;
+ txq = netdev_get_tx_queue(netdev, channel->queue_index);
+ ring = channel->tx_ring;
+ tx_pkt_info = &ring->pkt_info;
+
+ if (skb->len == 0) {
+ netif_err(pdata, tx_err, netdev,
+ "empty skb received from stack\n");
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ /* Prepare preliminary packet info for TX */
+ memset(tx_pkt_info, 0, sizeof(*tx_pkt_info));
+ gmac_prep_tx_pkt(pdata, ring, skb, tx_pkt_info);
+
+ /* Check that there are enough descriptors available */
+ ret = gmac_maybe_stop_tx_queue(channel,
+ ring,
+ tx_pkt_info->desc_count);
+ if (ret)
+ return ret;
+
+ ret = gmac_prep_tso(pdata, skb, tx_pkt_info);
+ if (ret) {
+ netif_err(pdata, tx_err, netdev,
+ "error processing TSO packet\n");
+ dev_kfree_skb_any(skb);
+ return ret;
+ }
+ gmac_prep_vlan(skb, tx_pkt_info);
+
+ if (!desc_ops->map_tx_skb(channel, skb)) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ /* Report on the actual number of bytes (to be) sent */
+ netdev_tx_sent_queue(txq, tx_pkt_info->tx_bytes);
+
+ /* Fallback to software timestamping if
+ * core doesn't support hardware timestamping
+ */
+ if (pdata->hw_feat.ts_src == 0 ||
+ pdata->hwts_tx_en == 0)
+ skb_tx_timestamp(skb);
+
+ /* Configure required descriptor fields for transmission */
+ hw_ops->dev_xmit(channel);
+
+ if (netif_msg_pktdata(pdata))
+ gmac_print_pkt(netdev, skb, true);
+
+ /* Stop the queue in advance if there may not be enough descriptors */
+ gmac_maybe_stop_tx_queue(channel, ring, GMAC_TX_MAX_DESC_NR);
+
+ return NETDEV_TX_OK;
+}
+
+static void gmac_get_stats64(struct net_device *netdev,
+ struct rtnl_link_stats64 *s)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_stats *pstats = &pdata->stats;
+
+ pdata->hw_ops.read_mmc_stats(pdata);
+
+ s->rx_packets = pstats->rxframecount_gb;
+ s->rx_bytes = pstats->rxoctetcount_gb;
+ s->rx_errors = pstats->rxframecount_gb -
+ pstats->rxbroadcastframes_g -
+ pstats->rxmulticastframes_g -
+ pstats->rxunicastframes_g;
+ s->multicast = pstats->rxmulticastframes_g;
+ s->rx_length_errors = pstats->rxlengtherror;
+ s->rx_crc_errors = pstats->rxcrcerror;
+ s->rx_fifo_errors = pstats->rxfifooverflow;
+
+ s->tx_packets = pstats->txframecount_gb;
+ s->tx_bytes = pstats->txoctetcount_gb;
+ s->tx_errors = pstats->txframecount_gb - pstats->txframecount_g;
+ s->tx_dropped = netdev->stats.tx_dropped;
+}
+
+static int gmac_set_mac_address(struct net_device *netdev, void *addr)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct sockaddr *saddr = addr;
+
+ if (!is_valid_ether_addr(saddr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(netdev->dev_addr, saddr->sa_data, netdev->addr_len);
+
+ hw_ops->set_mac_address(pdata, netdev->dev_addr, 0);
+
+ return 0;
+}
+
+static int gmac_hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ struct hwtstamp_config config;
+ struct timespec64 now;
+ u64 temp = 0;
+ u32 value = 0;
+ u32 sec_inc;
+
+ if (!pdata->hw_feat.ts_src) {
+ netdev_alert(pdata->netdev, "No support for HW timestamping\n");
+ pdata->hwts_tx_en = 0;
+ pdata->hwts_rx_en = 0;
+
+ return -EOPNOTSUPP;
+ }
+
+ if (copy_from_user(&config, ifr->ifr_data,
+ sizeof(struct hwtstamp_config)))
+ return -EFAULT;
+
+ netdev_dbg(pdata->netdev, "%s config flags:0x%x, tx_type:0x%x, rx_filter:0x%x\n",
+ __func__, config.flags, config.tx_type, config.rx_filter);
+
+ /* reserved for future extensions */
+ if (config.flags)
+ return -EINVAL;
+
+ if (config.tx_type != HWTSTAMP_TX_OFF &&
+ config.tx_type != HWTSTAMP_TX_ON)
+ return -ERANGE;
+
+ switch (config.rx_filter) {
+ case HWTSTAMP_FILTER_NONE:
+ /* time stamp no incoming packet at all */
+ config.rx_filter = HWTSTAMP_FILTER_NONE;
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+ /* PTP v1, UDP, any kind of event packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
+ /* take time stamp for all event messages */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_SNAPTYPSEL_POS,
+ PTP_TCR_SNAPTYPSEL_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+ /* PTP v1, UDP, Sync packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_SYNC;
+ /* take time stamp for SYNC messages only */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSEVNTENA_POS,
+ PTP_TCR_TSEVNTENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+ /* PTP v1, UDP, Delay_req packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ;
+ /* take time stamp for Delay_Req messages only */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSMSTRENA_POS,
+ PTP_TCR_TSMSTRENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSEVNTENA_POS,
+ PTP_TCR_TSEVNTENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+ /* PTP v2, UDP, any kind of event packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
+
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSVER2ENA_POS,
+ PTP_TCR_TSVER2ENA_LEN, 1);
+ /* take time stamp for all event messages */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_SNAPTYPSEL_POS,
+ PTP_TCR_SNAPTYPSEL_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+ /* PTP v2, UDP, Sync packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_SYNC;
+
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSVER2ENA_POS,
+ PTP_TCR_TSVER2ENA_LEN, 1);
+ /* take time stamp for SYNC messages only */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSEVNTENA_POS,
+ PTP_TCR_TSEVNTENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+ /* PTP v2, UDP, Delay_req packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ;
+
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSVER2ENA_POS,
+ PTP_TCR_TSVER2ENA_LEN, 1);
+ /* take time stamp for Delay_Req messages only */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSMSTRENA_POS,
+ PTP_TCR_TSMSTRENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSEVNTENA_POS,
+ PTP_TCR_TSEVNTENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V2_EVENT:
+ /* PTP v2/802.AS1 any layer, any kind of event packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
+
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSVER2ENA_POS,
+ PTP_TCR_TSVER2ENA_LEN, 1);
+ /* take time stamp for all event messages */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_SNAPTYPSEL_POS,
+ PTP_TCR_SNAPTYPSEL_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPENA_POS,
+ PTP_TCR_TSIPENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_AV8021ASMEN_POS,
+ PTP_TCR_AV8021ASMEN_LEN, 1);
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V2_SYNC:
+ /* PTP v2/802.AS1, any layer, Sync packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V2_SYNC;
+
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSVER2ENA_POS,
+ PTP_TCR_TSVER2ENA_LEN, 1);
+ /* take time stamp for SYNC messages only */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSEVNTENA_POS,
+ PTP_TCR_TSEVNTENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPENA_POS,
+ PTP_TCR_TSIPENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_AV8021ASMEN_POS,
+ PTP_TCR_AV8021ASMEN_LEN, 1);
+ break;
+
+ case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+ /* PTP v2/802.AS1, any layer, Delay_req packet */
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V2_DELAY_REQ;
+
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSVER2ENA_POS,
+ PTP_TCR_TSVER2ENA_LEN, 1);
+ /* take time stamp for Delay_Req messages only */
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSMSTRENA_POS,
+ PTP_TCR_TSMSTRENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSEVNTENA_POS,
+ PTP_TCR_TSEVNTENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV4ENA_POS,
+ PTP_TCR_TSIPV4ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPV6ENA_POS,
+ PTP_TCR_TSIPV6ENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSIPENA_POS,
+ PTP_TCR_TSIPENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_AV8021ASMEN_POS,
+ PTP_TCR_AV8021ASMEN_LEN, 1);
+ break;
+
+ case HWTSTAMP_FILTER_ALL:
+ /* time stamp any incoming packet */
+ config.rx_filter = HWTSTAMP_FILTER_ALL;
+
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSENALL_POS,
+ PTP_TCR_TSENALL_LEN, 1);
+ break;
+
+ default:
+ return -ERANGE;
+ }
+ pdata->hwts_rx_en =
+ ((config.rx_filter == HWTSTAMP_FILTER_NONE) ? 0 : 1);
+ pdata->hwts_tx_en = config.tx_type == HWTSTAMP_TX_ON;
+
+ if (!pdata->hwts_tx_en && !pdata->hwts_rx_en) {
+ hw_ops->config_hw_timestamping(pdata, 0);
+ } else {
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSENA_POS,
+ PTP_TCR_TSENA_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSCFUPDT_POS,
+ PTP_TCR_TSCFUPDT_LEN, 1);
+ value = GMAC_SET_REG_BITS(value, PTP_TCR_TSCTRLSSR_POS,
+ PTP_TCR_TSCTRLSSR_LEN, 1);
+ hw_ops->config_hw_timestamping(pdata, value);
+
+ /* program Sub Second Increment reg */
+ hw_ops->config_sub_second_increment(pdata,
+ pdata->ptpclk_rate,
+ &sec_inc);
+ temp = div_u64(1000000000, sec_inc);
+
+ /* calculate default added value:
+ * formula is :
+ * addend = (2^32)/freq_div_ratio;
+ * where, freq_div_ratio = 1e9ns/sec_inc
+ */
+ temp = (u64)(temp << 32);
+ pdata->default_addend = div_u64(temp, pdata->ptpclk_rate);
+ hw_ops->config_addend(pdata, pdata->default_addend);
+
+ /* initialize system time */
+ ktime_get_real_ts64(&now);
+
+ hw_ops->init_systime(pdata, (u32)now.tv_sec, now.tv_nsec);
+ }
+
+ return copy_to_user(ifr->ifr_data, &config,
+ sizeof(struct hwtstamp_config)) ? -EFAULT : 0;
+}
+
+static int gmac_ioctl(struct net_device *netdev,
+ struct ifreq *ifreq, int cmd)
+{
+ int ret = -EOPNOTSUPP;
+
+ if (!netif_running(netdev))
+ return -ENODEV;
+
+ switch (cmd) {
+ case SIOCSHWTSTAMP:
+ ret = gmac_hwtstamp_ioctl(netdev, ifreq);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static int gmac_change_mtu(struct net_device *netdev, int mtu)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ int ret;
+
+ if (netif_running(netdev)) {
+ netdev_err(netdev, "must be stopped to change its MTU\n");
+ return -EBUSY;
+ }
+
+ ret = gmac_calc_rx_buf_size(netdev, mtu);
+ if (ret < 0)
+ return ret;
+
+ pdata->rx_buf_size = ret;
+ netdev->mtu = mtu;
+
+ gmac_restart_dev(pdata);
+
+ return 0;
+}
+
+static int gmac_vlan_rx_add_vid(struct net_device *netdev,
+ __be16 proto,
+ u16 vid)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+
+ if (pdata->hw_feat.vlhash) {
+ set_bit(vid, pdata->active_vlans);
+ hw_ops->update_vlan_hash_table(pdata);
+ } else if (pdata->vlan_weight < 4) {
+ set_bit(vid, pdata->active_vlans);
+ pdata->vlan_weight =
+ __bitmap_weight(pdata->active_vlans, VLAN_N_VID);
+ hw_ops->update_vlan(pdata);
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int gmac_vlan_rx_kill_vid(struct net_device *netdev,
+ __be16 proto,
+ u16 vid)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+
+ clear_bit(vid, pdata->active_vlans);
+
+ if (pdata->hw_feat.vlhash)
+ hw_ops->update_vlan_hash_table(pdata);
+ else
+ hw_ops->update_vlan(pdata);
+
+ return 0;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void gmac_poll_controller(struct net_device *netdev)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_channel *channel;
+ unsigned int i;
+
+ if (pdata->per_channel_irq) {
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++)
+ gmac_dma_isr(channel->dma_irq, channel);
+ } else {
+ disable_irq(pdata->dev_irq);
+ gmac_isr(pdata->dev_irq, pdata);
+ enable_irq(pdata->dev_irq);
+ }
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+static int gmac_set_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ netdev_features_t rxcsum, rxvlan, rxvlan_filter;
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+
+ rxcsum = pdata->netdev_features & NETIF_F_RXCSUM;
+ rxvlan = pdata->netdev_features & NETIF_F_HW_VLAN_CTAG_RX;
+ rxvlan_filter = pdata->netdev_features & NETIF_F_HW_VLAN_CTAG_FILTER;
+
+ if ((features & NETIF_F_RXCSUM) && !rxcsum)
+ hw_ops->enable_rx_csum(pdata);
+ else if (!(features & NETIF_F_RXCSUM) && rxcsum)
+ hw_ops->disable_rx_csum(pdata);
+
+ if ((features & NETIF_F_HW_VLAN_CTAG_RX) && !rxvlan)
+ hw_ops->enable_rx_vlan_stripping(pdata);
+ else if (!(features & NETIF_F_HW_VLAN_CTAG_RX) && rxvlan)
+ hw_ops->disable_rx_vlan_stripping(pdata);
+
+ if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) && !rxvlan_filter)
+ hw_ops->enable_rx_vlan_filtering(pdata);
+ else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) && rxvlan_filter)
+ hw_ops->disable_rx_vlan_filtering(pdata);
+
+ pdata->netdev_features = features;
+
+ return 0;
+}
+
+static void gmac_set_rx_mode(struct net_device *netdev)
+{
+ struct gmac_pdata *pdata = netdev_priv(netdev);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+
+ hw_ops->config_rx_mode(pdata);
+}
+
+static const struct net_device_ops gmac_netdev_ops = {
+ .ndo_open = gmac_open,
+ .ndo_stop = gmac_close,
+ .ndo_start_xmit = gmac_xmit,
+ .ndo_tx_timeout = gmac_tx_timeout,
+ .ndo_get_stats64 = gmac_get_stats64,
+ .ndo_change_mtu = gmac_change_mtu,
+ .ndo_set_mac_address = gmac_set_mac_address,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_do_ioctl = gmac_ioctl,
+ .ndo_vlan_rx_add_vid = gmac_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = gmac_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = gmac_poll_controller,
+#endif
+ .ndo_set_features = gmac_set_features,
+ .ndo_set_rx_mode = gmac_set_rx_mode,
+};
+
+const struct net_device_ops *gmac_get_netdev_ops(void)
+{
+ return &gmac_netdev_ops;
+}
+
+static void gmac_rx_refresh(struct gmac_channel *channel)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_ring *ring = channel->rx_ring;
+ struct gmac_desc_data *desc_data;
+ struct gmac_desc_ops *desc_ops;
+ struct gmac_hw_ops *hw_ops;
+
+ desc_ops = &pdata->desc_ops;
+ hw_ops = &pdata->hw_ops;
+
+ while (ring->dirty != ring->cur) {
+ desc_data = GMAC_GET_DESC_DATA(ring, ring->dirty);
+
+ /* Reset desc_data values */
+ desc_ops->unmap_desc_data(pdata, desc_data, 0);
+
+ if (desc_ops->map_rx_buffer(pdata, ring, desc_data))
+ break;
+
+ hw_ops->rx_desc_reset(pdata, desc_data, ring->dirty);
+
+ ring->dirty++;
+ }
+
+ /* Make sure everything is written before the register write */
+ wmb();
+
+ /* Update the Rx Tail Pointer Register with address of
+ * the last cleaned entry
+ */
+ desc_data = GMAC_GET_DESC_DATA(ring, ring->dirty - 1);
+ GMAC_IOWRITE(pdata, DMA_CH_RDTR(channel->queue_index),
+ lower_32_bits(desc_data->dma_desc_addr));
+}
+
+static int gmac_tx_poll(struct gmac_channel *channel)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_ring *ring = channel->tx_ring;
+ struct net_device *netdev = pdata->netdev;
+ unsigned int tx_packets = 0, tx_bytes = 0;
+ struct gmac_desc_data *desc_data;
+ struct gmac_dma_desc *dma_desc;
+ struct gmac_desc_ops *desc_ops;
+ struct gmac_hw_ops *hw_ops;
+ struct netdev_queue *txq;
+ int processed = 0;
+ unsigned int cur;
+
+ desc_ops = &pdata->desc_ops;
+ hw_ops = &pdata->hw_ops;
+
+ /* Nothing to do if there isn't a Tx ring for this channel */
+ if (!ring)
+ return 0;
+
+ cur = ring->cur;
+
+ /* Be sure we get ring->cur before accessing descriptor data */
+ smp_rmb();
+
+ txq = netdev_get_tx_queue(netdev, channel->queue_index);
+
+ while ((processed < GMAC_TX_DESC_MAX_PROC) &&
+ (ring->dirty != cur)) {
+ desc_data = GMAC_GET_DESC_DATA(ring, ring->dirty);
+ dma_desc = desc_data->dma_desc;
+
+ if (!hw_ops->tx_complete(dma_desc))
+ break;
+
+ /* Make sure descriptor fields are read after reading
+ * the OWN bit
+ */
+ dma_rmb();
+
+ if (netif_msg_tx_done(pdata))
+ gmac_dump_tx_desc(pdata, ring, ring->dirty, 1, 0);
+
+ if (hw_ops->is_last_desc(dma_desc) &&
+ !hw_ops->is_context_desc(dma_desc)) {
+ tx_packets += desc_data->trx.packets;
+ tx_bytes += desc_data->trx.bytes;
+ hw_ops->get_tx_hwtstamp(pdata, dma_desc,
+ desc_data->skb);
+ }
+
+ /* Free the SKB and reset the descriptor for re-use */
+ desc_ops->unmap_desc_data(pdata, desc_data, 1);
+ hw_ops->tx_desc_reset(desc_data);
+
+ processed++;
+ ring->dirty++;
+ }
+
+ if (!processed)
+ return 0;
+
+ netdev_tx_completed_queue(txq, tx_packets, tx_bytes);
+
+ if (ring->tx.queue_stopped == 1 &&
+ gmac_tx_avail_desc(ring) > GMAC_TX_DESC_MIN_FREE) {
+ ring->tx.queue_stopped = 0;
+ netif_tx_wake_queue(txq);
+ }
+
+ netif_dbg(pdata, tx_done, pdata->netdev, "processed=%d\n", processed);
+
+ return processed;
+}
+
+static int gmac_rx_poll(struct gmac_channel *channel, int budget)
+{
+ struct gmac_pdata *pdata = channel->pdata;
+ struct gmac_ring *ring = channel->rx_ring;
+ struct net_device *netdev = pdata->netdev;
+ unsigned int frame_len, max_len;
+ unsigned int context_next, context;
+ struct gmac_desc_data *desc_data;
+ struct gmac_pkt_info *pkt_info;
+ unsigned int incomplete, error;
+ struct gmac_hw_ops *hw_ops;
+ unsigned int received = 0;
+ struct napi_struct *napi;
+ struct sk_buff *skb;
+ struct skb_shared_hwtstamps *shhwtstamp = NULL;
+ int packet_count = 0;
+
+ hw_ops = &pdata->hw_ops;
+
+ /* Nothing to do if there isn't a Rx ring for this channel */
+ if (!ring)
+ return 0;
+
+ incomplete = 0;
+ context_next = 0;
+
+ napi = (pdata->per_channel_irq) ? &channel->napi : &pdata->napi;
+
+ desc_data = GMAC_GET_DESC_DATA(ring, ring->cur);
+ pkt_info = &ring->pkt_info;
+ while (packet_count < budget) {
+ memset(pkt_info, 0, sizeof(*pkt_info));
+ skb = NULL;
+ error = 0;
+
+ desc_data = GMAC_GET_DESC_DATA(ring, ring->cur);
+
+ if (gmac_rx_dirty_desc(ring) > GMAC_RX_DESC_MAX_DIRTY)
+ gmac_rx_refresh(channel);
+
+ if (hw_ops->dev_read(channel))
+ break;
+
+ received++;
+ ring->cur++;
+
+ incomplete = GMAC_GET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_INCOMPLETE_POS,
+ RX_PACKET_ATTRIBUTES_INCOMPLETE_LEN);
+ context = GMAC_GET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_CONTEXT_POS,
+ RX_PACKET_ATTRIBUTES_CONTEXT_LEN);
+
+ if (error || pkt_info->errors || incomplete) {
+ if (pkt_info->errors)
+ netif_err(pdata, rx_err, netdev,
+ "error in received packet\n");
+ dev_kfree_skb(skb);
+ goto next_packet;
+ }
+
+ if (!context) {
+ frame_len = desc_data->trx.bytes;
+
+ if (frame_len < GMAC_COPYBREAK_DEFAULT) {
+ skb = netdev_alloc_skb_ip_align(netdev,
+ frame_len);
+ if (unlikely(!skb)) {
+ if (net_ratelimit())
+ dev_warn(pdata->dev,
+ "packet dropped\n");
+ pdata->netdev->stats.rx_dropped++;
+ break;
+ }
+
+ dma_sync_single_for_cpu(pdata->dev,
+ desc_data->skb_dma,
+ frame_len,
+ DMA_FROM_DEVICE);
+ skb_copy_to_linear_data(skb,
+ desc_data->skb->data,
+ frame_len);
+
+ skb_put(skb, frame_len);
+ dma_sync_single_for_device(pdata->dev,
+ desc_data->skb_dma,
+ frame_len,
+ DMA_FROM_DEVICE);
+ } else {
+ skb = desc_data->skb;
+ desc_data->skb = NULL;
+ dma_unmap_single(pdata->dev,
+ desc_data->skb_dma,
+ pdata->rx_buf_size,
+ DMA_FROM_DEVICE);
+ desc_data->skb_dma = 0;
+
+ skb_put(skb, frame_len);
+ }
+ }
+
+ /* Be sure we don't exceed the configured MTU */
+ max_len = netdev->mtu + ETH_HLEN;
+ if (!(netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
+ skb->protocol == htons(ETH_P_8021Q))
+ max_len += VLAN_HLEN;
+
+ if (skb->len > max_len) {
+ netif_err(pdata, rx_err, netdev,
+ "packet length exceeds configured MTU\n");
+ dev_kfree_skb(skb);
+ goto next_packet;
+ }
+
+ if (netif_msg_pktdata(pdata))
+ gmac_print_pkt(netdev, skb, false);
+
+ skb_checksum_none_assert(skb);
+ if (GMAC_GET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_CSUM_DONE_POS,
+ RX_PACKET_ATTRIBUTES_CSUM_DONE_LEN))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ if (GMAC_GET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_VLAN_CTAG_POS,
+ RX_PACKET_ATTRIBUTES_VLAN_CTAG_LEN)) {
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+ pkt_info->vlan_ctag);
+ pdata->stats.rx_vlan_packets++;
+ }
+
+ if (GMAC_GET_REG_BITS(pkt_info->attributes,
+ RX_PACKET_ATTRIBUTES_RX_TSTAMP_POS,
+ RX_PACKET_ATTRIBUTES_RX_TSTAMP_LEN)) {
+ shhwtstamp = skb_hwtstamps(skb);
+ memset(shhwtstamp, 0,
+ sizeof(struct skb_shared_hwtstamps));
+ shhwtstamp->hwtstamp =
+ ns_to_ktime(pkt_info->rx_tstamp);
+ pdata->stats.rx_timestamp_packets++;
+ }
+
+ skb->dev = netdev;
+ skb->protocol = eth_type_trans(skb, netdev);
+ skb_record_rx_queue(skb, channel->queue_index);
+
+ napi_gro_receive(napi, skb);
+
+next_packet:
+ packet_count++;
+ }
+
+ netif_dbg(pdata, rx_status, pdata->netdev,
+ "packet_count = %d\n", packet_count);
+
+ return packet_count;
+}
+
+static int gmac_one_poll(struct napi_struct *napi, int budget)
+{
+ struct gmac_channel *channel = container_of(napi,
+ struct gmac_channel,
+ napi);
+ struct gmac_pdata *pdata = channel->pdata;
+ int processed = 0;
+
+ netif_dbg(pdata, intr, pdata->netdev, "budget=%d\n", budget);
+
+ /* Cleanup Tx ring first */
+ gmac_tx_poll(channel);
+
+ /* Process Rx ring next */
+ processed = gmac_rx_poll(channel, budget);
+
+ /* If we processed everything, we are done */
+ if (processed < budget) {
+ /* Turn off polling */
+ napi_complete_done(napi, processed);
+
+ /* Enable Tx and Rx interrupts */
+ enable_irq(channel->dma_irq);
+ }
+
+ netif_dbg(pdata, intr, pdata->netdev, "received = %d\n", processed);
+
+ return processed;
+}
+
+static int gmac_all_poll(struct napi_struct *napi, int budget)
+{
+ struct gmac_pdata *pdata = container_of(napi,
+ struct gmac_pdata,
+ napi);
+ struct gmac_channel *channel;
+ int processed, last_processed;
+ int ring_budget;
+ unsigned int i;
+
+ netif_dbg(pdata, intr, pdata->netdev, "budget=%d\n", budget);
+
+ processed = 0;
+ ring_budget = budget / pdata->rx_ring_count;
+ do {
+ last_processed = processed;
+
+ channel = pdata->channel_head;
+ for (i = 0; i < pdata->channel_count; i++, channel++) {
+ /* Cleanup Tx ring first */
+ gmac_tx_poll(channel);
+
+ /* Process Rx ring next */
+ if (ring_budget > (budget - processed))
+ ring_budget = budget - processed;
+ processed += gmac_rx_poll(channel, ring_budget);
+ }
+ } while ((processed < budget) && (processed != last_processed));
+
+ /* If we processed everything, we are done */
+ if (processed < budget) {
+ /* Turn off polling */
+ napi_complete_done(napi, processed);
+
+ /* Enable Tx and Rx interrupts */
+ gmac_enable_rx_tx_ints(pdata);
+ }
+
+ netif_dbg(pdata, intr, pdata->netdev, "received = %d\n", processed);
+
+ return processed;
+}
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-ptp.c b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-ptp.c
new file mode 100644
index 0000000..e74154c
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-ptp.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2018 MediaTek Inc.
+#include "mtk-gmac.h"
+
+static int gmac_adjust_freq(struct ptp_clock_info *ptp, s32 ppb)
+{
+ struct gmac_pdata *pdata =
+ container_of(ptp, struct gmac_pdata, ptp_clock_info);
+ unsigned long adj, diff, freq_top;
+ int neg_adj = 0;
+
+ if (ppb < 0) {
+ neg_adj = 1;
+ ppb = -ppb;
+ }
+
+ freq_top = pdata->ptptop_rate;
+ adj = freq_top;
+ adj *= ppb;
+ /* div_u64 will divided the "adj" by "1000000000ULL"
+ * and return the quotient.
+ */
+ diff = div_u64(adj, 1000000000ULL);
+ freq_top = neg_adj ? (freq_top - diff) : (freq_top + diff);
+
+ clk_set_rate(pdata->plat->clks[GMAC_CLK_PTP_TOP], freq_top);
+
+ return 0;
+}
+
+static int gmac_adjust_time(struct ptp_clock_info *ptp, s64 delta)
+{
+ struct gmac_pdata *pdata =
+ container_of(ptp, struct gmac_pdata, ptp_clock_info);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ unsigned long flags;
+ u32 sec, nsec, quotient, reminder;
+ int neg_adj = 0;
+
+ if (delta < 0) {
+ neg_adj = 1;
+ delta = -delta;
+ }
+
+ quotient = div_u64_rem(delta, 1000000000ULL, &reminder);
+ sec = quotient;
+ nsec = reminder;
+
+ spin_lock_irqsave(&pdata->ptp_lock, flags);
+
+ hw_ops->adjust_systime(pdata, sec, nsec, neg_adj);
+
+ spin_unlock_irqrestore(&pdata->ptp_lock, flags);
+
+ return 0;
+}
+
+static int gmac_get_time(struct ptp_clock_info *ptp, struct timespec64 *ts)
+{
+ struct gmac_pdata *pdata =
+ container_of(ptp, struct gmac_pdata, ptp_clock_info);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ u64 ns;
+ u32 reminder;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->ptp_lock, flags);
+
+ hw_ops->get_systime(pdata, &ns);
+
+ spin_unlock_irqrestore(&pdata->ptp_lock, flags);
+
+ ts->tv_sec = div_u64_rem(ns, 1000000000ULL, &reminder);
+ ts->tv_nsec = reminder;
+
+ return 0;
+}
+
+static int gmac_set_time(struct ptp_clock_info *ptp,
+ const struct timespec64 *ts)
+{
+ struct gmac_pdata *pdata =
+ container_of(ptp, struct gmac_pdata, ptp_clock_info);
+ struct gmac_hw_ops *hw_ops = &pdata->hw_ops;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->ptp_lock, flags);
+
+ hw_ops->init_systime(pdata, ts->tv_sec, ts->tv_nsec);
+
+ spin_unlock_irqrestore(&pdata->ptp_lock, flags);
+
+ return 0;
+}
+
+static int gmac_enable(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq,
+ int on)
+{
+ return -EOPNOTSUPP;
+}
+
+int ptp_init(struct gmac_pdata *pdata)
+{
+ struct ptp_clock_info *info = &pdata->ptp_clock_info;
+ struct ptp_clock *clock;
+ int ret = 0;
+
+ if (!pdata->hw_feat.ts_src) {
+ pdata->ptp_clock = NULL;
+ pr_err("No PTP supports in HW\n"
+ "Aborting PTP clock driver registration\n");
+ return -EOPNOTSUPP;
+ }
+
+ spin_lock_init(&pdata->ptp_lock);
+
+ pdata->ptpclk_rate = clk_get_rate(pdata->plat->clks[GMAC_CLK_PTP]);
+ pdata->ptptop_rate = clk_get_rate(pdata->plat->clks[GMAC_CLK_PTP_TOP]);
+ pdata->ptp_divider = pdata->ptptop_rate / pdata->ptpclk_rate;
+
+ snprintf(info->name, sizeof(info->name), "%s",
+ netdev_name(pdata->netdev));
+ info->owner = THIS_MODULE;
+ info->max_adj = pdata->ptpclk_rate;
+ info->adjfreq = gmac_adjust_freq;
+ info->adjtime = gmac_adjust_time;
+ info->gettime64 = gmac_get_time;
+ info->settime64 = gmac_set_time;
+ info->enable = gmac_enable;
+
+ clock = ptp_clock_register(info, pdata->dev);
+ if (IS_ERR(clock)) {
+ pdata->ptp_clock = NULL;
+ netdev_err(pdata->netdev, "ptp_clock_register() failed\n");
+ } else {
+ pdata->ptp_clock = clock;
+ netdev_info(pdata->netdev, "Added PTP HW clock successfully\n");
+ }
+
+ return ret;
+}
+
+void ptp_remove(struct gmac_pdata *pdata)
+{
+ if (pdata->ptp_clock) {
+ ptp_clock_unregister(pdata->ptp_clock);
+ pdata->ptp_clock = NULL;
+ pr_debug("Removed PTP HW clock successfully on %s\n",
+ pdata->netdev->name);
+ }
+}
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac-reg.h b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-reg.h
new file mode 100644
index 0000000..2e462dc
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac-reg.h
@@ -0,0 +1,861 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ */
+#ifndef __MTK_GMAC_REG_H__
+#define __MTK_GMAC_REG_H__
+
+/* Macros for reading or writing registers
+ * The ioread macros will get bit fields or full values using the
+ * register definitions formed using the input names
+ *
+ * The iowrite macros will set bit fields or full values using the
+ * register definitions formed using the input names
+ */
+#define GMAC_IOREAD(_pdata, _reg) \
+ ioread32((_pdata)->mac_regs + (_reg))
+
+#define GMAC_IOWRITE(_pdata, _reg, _val) \
+ iowrite32((_val), (_pdata)->mac_regs + (_reg))
+
+#define GMAC_GET_REG_BITS(var, pos, len) ({ \
+ typeof(pos) _pos = (pos); \
+ typeof(len) _len = (len); \
+ ((var) & GENMASK(_pos + _len - 1, _pos)) >> (_pos); \
+})
+
+#define GMAC_SET_REG_BITS(var, pos, len, val) ({ \
+ typeof(var) _var = (var); \
+ typeof(pos) _pos = (pos); \
+ typeof(len) _len = (len); \
+ typeof(val) _val = (val); \
+ _val = (_val << _pos) & GENMASK(_pos + _len - 1, _pos); \
+ _var = (_var & ~GENMASK(_pos + _len - 1, _pos)) | _val; \
+})
+
+enum dma_irq_status {
+ tx_hard_error = 0x1,
+ tx_hard_error_bump_tc = 0x2,
+ handle_rx = 0x4,
+ handle_tx = 0x8,
+};
+
+enum rx_dma_dbg_state {
+ rx_stopped = 0x0,
+ rx_running_fetching = 0x1,
+ rx_running_waiting = 0x3,
+ rx_suspended = 0x4,
+ rx_running_closing = 0x5,
+ rx_timestamp_write = 0x6,
+ rx_running_transfer = 0x7,
+};
+
+enum tx_dma_dbg_state {
+ tx_stopped = 0x0,
+ tx_running_fetching = 0x1,
+ tx_running_waiting = 0x2,
+ tx_running_queuing = 0x3,
+ tx_timestamp_write = 0x4,
+ tx_suspended = 0x6,
+ tx_running_closing = 0x7,
+};
+
+/* MAC register offsets */
+#define MAC_MCR 0x0000
+#define MAC_PFR 0x0008
+#define MAC_HTR(x) (0x0010 + (x) * 4)
+#define MAC_VLANTR 0x0050
+#define MAC_VLANTFR 0x0054
+#define MAC_VLANHTR 0x0058
+#define MAC_VLANIR 0x0060
+#define MAC_Q_TFCR(x) (0x70 + (x) * 4)
+#define MAC_RFCR 0x0090
+#define MAC_RQC0R 0x00a0
+#define MAC_RQC1R 0x00a4
+#define MAC_RQC2R 0x00a8
+#define MAC_RQC3R 0x00ac
+#define MAC_ISR 0x00b0
+#define MAC_IER 0x00b4
+#define MAC_PCSR 0x00f8
+#define MAC_VR 0x0110
+#define MAC_HWF0R 0x011c
+#define MAC_HWF1R 0x0120
+#define MAC_HWF2R 0x0124
+#define MAC_MDIOAR 0x0200
+#define MAC_MDIODR 0x0204
+#define MAC_ADDR_HR(x) (0x0300 + (x) * 8)
+#define MAC_ADDR_LR(x) (0x0304 + (x) * 8)
+
+/* MAC register entry bit positions and sizes */
+#define MAC_ADDR_HR_AE_POS 31
+#define MAC_ADDR_HR_AE_LEN 1
+#define MAC_HW_FEAT_ACTPHYSEL_POS 28
+#define MAC_HW_FEAT_ACTPHYSEL_LEN 3
+#define MAC_HW_FEAT_SAVLANINS_POS 27
+#define MAC_HW_FEAT_SAVLANINS_LEN 1
+#define MAC_HW_FEAT_TSSTSSEL_POS 25
+#define MAC_HW_FEAT_TSSTSSEL_LEN 2
+#define MAC_HW_FEAT_ADDMAC_POS 18
+#define MAC_HW_FEAT_ADDMAC_LEN 7
+#define MAC_HW_FEAT_RXCOESEL_POS 16
+#define MAC_HW_FEAT_RXCOESEL_LEN 1
+#define MAC_HW_FEAT_TXCOSEL_POS 14
+#define MAC_HW_FEAT_TXCOSEL_LEN 1
+#define MAC_HW_FEAT_EEESEL_POS 13
+#define MAC_HW_FEAT_EEESEL_LEN 1
+#define MAC_HW_FEAT_TSSEL_POS 12
+#define MAC_HW_FEAT_TSSEL_LEN 1
+#define MAC_HW_FEAT_ARPOFFSEL_POS 9
+#define MAC_HW_FEAT_ARPOFFSEL_LEN 1
+#define MAC_HW_FEAT_MMCSEL_POS 8
+#define MAC_HW_FEAT_MMCSEL_LEN 1
+#define MAC_HW_FEAT_MGKSEL_POS 7
+#define MAC_HW_FEAT_MGKSEL_LEN 1
+#define MAC_HW_FEAT_RWKSEL_POS 6
+#define MAC_HW_FEAT_RWKSEL_LEN 1
+#define MAC_HW_FEAT_SMASEL_POS 5
+#define MAC_HW_FEAT_SMASEL_LEN 1
+#define MAC_HW_FEAT_VLHASH_POS 4
+#define MAC_HW_FEAT_VLHASH_LEN 1
+#define MAC_HW_FEAT_PCSSEL_POS 3
+#define MAC_HW_FEAT_PCSSEL_LEN 1
+#define MAC_HW_FEAT_HDSEL_POS 2
+#define MAC_HW_FEAT_HDSEL_LEN 1
+#define MAC_HW_FEAT_GMIISEL_POS 1
+#define MAC_HW_FEAT_GMIISEL_LEN 1
+#define MAC_HW_FEAT_MIISEL_POS 0
+#define MAC_HW_FEAT_MIISEL_LEN 1
+#define MAC_HW_L3L4FNUM_POS 27
+#define MAC_HW_L3L4FNUM_LEN 4
+#define MAC_HW_HASHTBLSZ_POS 24
+#define MAC_HW_HASHTBLSZ_LEN 2
+#define MAC_HW_POUOST_POS 23
+#define MAC_HW_POUOST_LEN 1
+#define MAC_HW_RAV_POS 21
+#define MAC_HW_RAV_LEN 1
+#define MAC_HW_AV_POS 20
+#define MAC_HW_AV_LEN 1
+#define MAC_HW_DMADEBUGEN_POS 19
+#define MAC_HW_DMADEBUGEN_LEN 1
+#define MAC_HW_TSOEN_POS 18
+#define MAC_HW_TSOEN_LEN 1
+#define MAC_HW_SPHEN_POS 17
+#define MAC_HW_SPHEN_LEN 1
+#define MAC_HW_DCBEN_POS 16
+#define MAC_HW_DCBEN_LEN 1
+#define MAC_HW_ADDR64_POS 14
+#define MAC_HW_ADDR64_LEN 2
+#define MAC_HW_ADVTHWORD_POS 13
+#define MAC_HW_ADVTHWORD_LEN 1
+#define MAC_HW_PTOEN_POS 12
+#define MAC_HW_PTOEN_LEN 1
+#define MAC_HW_OSTEN_POS 11
+#define MAC_HW_OSTEN_LEN 1
+#define MAC_HW_TXFIFOSIZE_POS 6
+#define MAC_HW_TXFIFOSIZE_LEN 5
+#define MAC_HW_RXFIFOSIZE_POS 0
+#define MAC_HW_RXFIFOSIZE_LEN 5
+#define MAC_HW_FEAT_AUXSNAPNUM_POS 28
+#define MAC_HW_FEAT_AUXSNAPNUM_LEN 3
+#define MAC_HW_FEAT_PPSOUTNUM_POS 24
+#define MAC_HW_FEAT_PPSOUTNUM_LEN 3
+#define MAC_HW_FEAT_TXCHCNT_POS 18
+#define MAC_HW_FEAT_TXCHCNT_LEN 4
+#define MAC_HW_FEAT_RXCHCNT_POS 12
+#define MAC_HW_FEAT_RXCHCNT_LEN 4
+#define MAC_HW_FEAT_TXQCNT_POS 6
+#define MAC_HW_FEAT_TXQCNT_LEN 4
+#define MAC_HW_FEAT_RXQCNT_POS 0
+#define MAC_HW_FEAT_RXQCNT_LEN 4
+#define MAC_IER_RGMII_POS 0
+#define MAC_IER_RGMII_LEN 1
+#define MAC_ISR_MMCRXIS_POS 9
+#define MAC_ISR_MMCRXIS_LEN 1
+#define MAC_ISR_MMCTXIS_POS 10
+#define MAC_ISR_MMCTXIS_LEN 1
+#define MAC_ISR_MMCRXIPIS_POS 11
+#define MAC_ISR_MMCRXIPIS_LEN 1
+#define MAC_ISR_RGSMIIS_POS 0
+#define MAC_ISR_RGSMIIS_LEN 1
+#define MAC_MDIOAR_GB_POS 0
+#define MAC_MDIOAR_GB_LEN 1
+#define MAC_MDIOAR_C45E_POS 1
+#define MAC_MDIOAR_C45E_LEN 1
+#define MAC_MDIOAR_GOC_POS 2
+#define MAC_MDIOAR_GOC_LEN 2
+#define MAC_MDIOAR_CR_POS 8
+#define MAC_MDIOAR_CR_LEN 4
+#define MAC_MDIOAR_RDA_POS 16
+#define MAC_MDIOAR_RDA_LEN 5
+#define MAC_MDIOAR_PA_POS 21
+#define MAC_MDIOAR_PA_LEN 5
+#define MAC_MDIODR_GD_POS 0
+#define MAC_MDIODR_GD_LEN 16
+#define MAC_MDIODR_RA_POS 16
+#define MAC_MDIODR_RA_LEN 16
+#define MAC_MCR_ACS_POS 20
+#define MAC_MCR_ACS_LEN 1
+#define MAC_MCR_CST_POS 21
+#define MAC_MCR_CST_LEN 1
+#define MAC_MCR_IPC_POS 27
+#define MAC_MCR_IPC_LEN 1
+#define MAC_MCR_JE_POS 16
+#define MAC_MCR_JE_LEN 1
+#define MAC_MCR_LM_POS 12
+#define MAC_MCR_LM_LEN 1
+#define MAC_MCR_SS_POS 14
+#define MAC_MCR_SS_LEN 2
+#define MAC_MCR_DM_POS 13
+#define MAC_MCR_DM_LEN 2
+#define MAC_MCR_TE_POS 1
+#define MAC_MCR_TE_LEN 1
+#define MAC_MCR_RE_POS 0
+#define MAC_MCR_RE_LEN 1
+#define MAC_PFR_HMC_POS 2
+#define MAC_PFR_HMC_LEN 1
+#define MAC_PFR_HPF_POS 10
+#define MAC_PFR_HPF_LEN 1
+#define MAC_PFR_HUC_POS 1
+#define MAC_PFR_HUC_LEN 1
+#define MAC_PFR_PM_POS 4
+#define MAC_PFR_PM_LEN 1
+#define MAC_PFR_PR_POS 0
+#define MAC_PFR_PR_LEN 1
+#define MAC_PFR_VTFE_POS 16
+#define MAC_PFR_VTFE_LEN 1
+#define MAC_QTFCR_PT_POS 16
+#define MAC_QTFCR_PT_LEN 16
+#define MAC_QTFCR_TFE_POS 1
+#define MAC_QTFCR_TFE_LEN 1
+#define MAC_RFCR_RFE_POS 0
+#define MAC_RFCR_RFE_LEN 1
+#define MAC_RGMII_LNKSTS_POS 19
+#define MAC_RGMII_LNKSTS_LEN 1
+#define MAC_RGMII_SPEED_POS 17
+#define MAC_RGMII_SPEED_LEN 2
+#define MAC_RGMII_LNKMODE_POS 16
+#define MAC_RGMII_LNKMODE_LEN 1
+#define MAC_VLANHTR_VLHT_POS 0
+#define MAC_VLANHTR_VLHT_LEN 16
+#define MAC_VLANIR_VLTI_POS 20
+#define MAC_VLANIR_VLTI_LEN 1
+#define MAC_VLANIR_CSVL_POS 19
+#define MAC_VLANIR_CSVL_LEN 1
+#define MAC_VLANTR_EVLRXS_POS 24
+#define MAC_VLANTR_EVLRXS_LEN 1
+#define MAC_VLANTR_EVLS_POS 21
+#define MAC_VLANTR_EVLS_LEN 2
+#define MAC_VLANTR_DOVLTC_POS 20
+#define MAC_VLANTR_DOVLTC_LEN 1
+#define MAC_VLANTR_ERSVLM_POS 19
+#define MAC_VLANTR_ERSVLM_LEN 1
+#define MAC_VLANTR_ESVL_POS 18
+#define MAC_VLANTR_ESVL_LEN 1
+#define MAC_VLANTR_ETV_POS 16
+#define MAC_VLANTR_ETV_LEN 1
+#define MAC_VLANTR_VL_POS 0
+#define MAC_VLANTR_VL_LEN 16
+#define MAC_VLANTR_VTHM_POS 25
+#define MAC_VLANTR_VTHM_LEN 1
+#define MAC_VLANTR_VTIM_POS 17
+#define MAC_VLANTR_VTIM_LEN 1
+/* For HASH VLAN DISABLE */
+#define MAC_VLANTR_OFS_POS 2
+#define MAC_VLANTR_OFS_LEN 2
+#define MAC_VLANTR_CT_POS 1
+#define MAC_VLANTR_CT_LEN 1
+#define MAC_VLANTR_OB_POS 0
+#define MAC_VLANTR_OB_LEN 1
+#define MAC_VLANTFR_VEN_POS 16
+#define MAC_VLANTFR_VEN_LEN 1
+#define MAC_VLANTFR_VID_POS 0
+#define MAC_VLANTFR_VID_LEN 16
+#define MAC_VR_SNPSVER_POS 0
+#define MAC_VR_SNPSVER_LEN 8
+#define MAC_VR_USERVER_POS 8
+#define MAC_VR_USERVER_LEN 8
+
+/* MAC register value */
+#define GMAC_RGSMIIIS_SPEED_125 2
+#define GMAC_RGSMIIIS_SPEED_25 1
+#define GMAC_RGSMIIIS_SPEED_2_5 0
+
+/* MMC register offsets */
+/* Note:
+ * _GB register stands for good and bad frames
+ * _G is for good only.
+ */
+#define MMC_CR 0x0700
+#define MMC_RISR 0x0704
+#define MMC_TISR 0x0708
+#define MMC_RIER 0x070c
+#define MMC_TIER 0x0710
+#define MMC_IPCER 0x0800
+#define MMC_IPCSR 0x0808
+#define MMC_TXOCTETCOUNT_GB 0x714
+#define MMC_TXPACKETCOUNT_GB 0x718
+#define MMC_TXBROADCASTFRAMES_G 0x71c
+#define MMC_TXMULTICASTFRAMES_G 0x720
+#define MMC_TX64OCTETS_GB 0x724
+#define MMC_TX65TO127OCTETS_GB 0x728
+#define MMC_TX128TO255OCTETS_GB 0x72c
+#define MMC_TX256TO511OCTETS_GB 0x730
+#define MMC_TX512TO1023OCTETS_GB 0x734
+#define MMC_TX1024TOMAXOCTETS_GB 0x738
+#define MMC_TXUNICASTFRAMES_GB 0x73c
+#define MMC_TXMULTICASTFRAMES_GB 0x740
+#define MMC_TXBROADCASTFRAMES_GB 0x744
+#define MMC_TXUNDERFLOWERROR 0x748
+#define MMC_TXSINGLECOL_G 0x74c
+#define MMC_TXMULTICOL_G 0x750
+#define MMC_TXDEFERRED 0x754
+#define MMC_TXLATECOL 0x758
+#define MMC_TXEXESSCOL 0x75c
+#define MMC_TXCARRIERERROR 0x760
+#define MMC_TXOCTETCOUNT_G 0x764
+#define MMC_TXPACKETSCOUNT_G 0x768
+#define MMC_TXEXCESSDEF 0x76c
+#define MMC_TXPAUSEFRAMES 0x770
+#define MMC_TXVLANFRAMES_G 0x774
+#define MMC_TXOVERSIZE_G 0x778
+#define MMC_RXPACKETCOUNT_GB 0x780
+#define MMC_RXOCTETCOUNT_GB 0x784
+#define MMC_RXOCTETCOUNT_G 0x788
+#define MMC_RXBROADCASTFRAMES_G 0x78c
+#define MMC_RXMULTICASTFRAMES_G 0x790
+#define MMC_RXCRCERROR 0x794
+#define MMC_RXALIGNMENTERROR 0x798
+#define MMC_RXRUNTERROR 0x79c
+#define MMC_RXJABBERERROR 0x7a0
+#define MMC_RXUNDERSIZE_G 0x7a4
+#define MMC_RXOVERSIZE_G 0x7a8
+#define MMC_RX64OCTETS_GB 0x7ac
+#define MMC_RX65TO127OCTETS_GB 0x7b0
+#define MMC_RX128TO255OCTETS_GB 0x7b4
+#define MMC_RX256TO511OCTETS_GB 0x7b8
+#define MMC_RX512TO1023OCTETS_GB 0x7bc
+#define MMC_RX1024TOMAXOCTETS_GB 0x7c0
+#define MMC_RXUNICASTFRAMES_G 0x7c4
+#define MMC_RXLENGTHERROR 0x7c8
+#define MMC_RXOUTOFRANGETYPE 0x7cc
+#define MMC_RXPAUSEFRAMES 0x7d0
+#define MMC_RXFIFOOVERFLOW 0x7d4
+#define MMC_RXVLANFRAMES_GB 0x7d8
+#define MMC_RXWATCHDOGERROR 0x7dc
+#define MMC_RXRCVERROR 0x7e0
+#define MMC_RXCTRLFRAMES_G 0x7e4
+#define MMC_TXLPIUSEC 0x7ec
+#define MMC_TXLPITRAN 0x7f0
+#define MMC_RXLPIUSEC 0x7f4
+#define MMC_RXLPITRAN 0x7f8
+#define MMC_RXIPV4GDPKTS 0x810
+#define MMC_RXIPV4HDRERRPKTS 0x814
+#define MMC_RXIPV4NOPAYPKTS 0x818
+#define MMC_RXIPV4FRAGPKTS 0x81c
+#define MMC_RXIPV4UBSBLPKTS 0x820
+#define MMC_RXIPV6GDPKTS 0x824
+#define MMC_RXIPV6HDRERRPKTS 0x828
+#define MMC_RXIPV6NOPAYPKTS 0x82c
+#define MMC_RXUDPGDPKTS 0x830
+#define MMC_RXUDPERRPKTS 0x834
+#define MMC_RXTCPGDPKTS 0x838
+#define MMC_RXTCPERRPKTS 0x83c
+#define MMC_RXICMPGDPKTS 0x840
+#define MMC_RXICMPERRPKTS 0x844
+#define MMC_RXIPV4GDOCTETS 0x850
+#define MMC_RXIPV4HDRERROCTETS 0x854
+#define MMC_RXIPV4NOPAYOCTETS 0x858
+#define MMC_RXIPV4FRAGOCTETS 0x85c
+#define MMC_RXIPV4UDSBLOCTETS 0x860
+#define MMC_RXIPV6GDOCTETS 0x864
+#define MMC_RXIPV6HDRERROCTETS 0x868
+#define MMC_RXIPV6NOPAYOCTETS 0x86c
+#define MMC_RXUDPGDOCTETS 0x870
+#define MMC_RXUDPERROCTETS 0x874
+#define MMC_RXTCPGDOCTETS 0x878
+#define MMC_RXTCPERROCTETS 0x87c
+#define MMC_RXICMPGDOCTETS 0x880
+#define MMC_RXICMPERROCTETS 0x884
+
+/* MMC register entry bit positions and sizes */
+#define MMC_CR_MCF_POS 3
+#define MMC_CR_MCF_LEN 1
+#define MMC_CR_ROR_POS 2
+#define MMC_CR_ROR_LEN 1
+#define MMC_CR_CR_POS 0
+#define MMC_CR_CR_LEN 1
+#define MMC_IPCSR_RXICMPERROCTETS_POS 29
+#define MMC_IPCSR_RXICMPERROCTETS_LEN 1
+#define MMC_IPCSR_RXICMPGDOCTETS_POS 28
+#define MMC_IPCSR_RXICMPGDOCTETS_LEN 1
+#define MMC_IPCSR_RXTCPERROCTETS_POS 27
+#define MMC_IPCSR_RXTCPERROCTETS_LEN 1
+#define MMC_IPCSR_RXTCPGDOCTETS_POS 26
+#define MMC_IPCSR_RXTCPGDOCTETS_LEN 1
+#define MMC_IPCSR_RXUDPERROCTETS_POS 25
+#define MMC_IPCSR_RXUDPERROCTETS_LEN 1
+#define MMC_IPCSR_RXUDPGDOCTETS_POS 24
+#define MMC_IPCSR_RXUDPGDOCTETS_LEN 1
+#define MMC_IPCSR_RXIPV6NOPAYOCTETS_POS 23
+#define MMC_IPCSR_RXIPV6NOPAYOCTETS_LEN 1
+#define MMC_IPCSR_RXIPV6HDRERROCTETS_POS 22
+#define MMC_IPCSR_RXIPV6HDRERROCTETS_LEN 1
+#define MMC_IPCSR_RXIPV6GDOCTETS_POS 21
+#define MMC_IPCSR_RXIPV6GDOCTETS_LEN 1
+#define MMC_IPCSR_RXIPV4UDSBLOCTETS_POS 20
+#define MMC_IPCSR_RXIPV4UDSBLOCTETS_LEN 1
+#define MMC_IPCSR_RXIPV4FRAGOCTETS_POS 19
+#define MMC_IPCSR_RXIPV4FRAGOCTETS_LEN 1
+#define MMC_IPCSR_RXIPV4NOPAYOCTETS_POS 18
+#define MMC_IPCSR_RXIPV4NOPAYOCTETS_LEN 1
+#define MMC_IPCSR_RXIPV4HDRERROCTETS_POS 17
+#define MMC_IPCSR_RXIPV4HDRERROCTETS_LEN 1
+#define MMC_IPCSR_RXIPV4GDOCTETS_POS 16
+#define MMC_IPCSR_RXIPV4GDOCTETS_LEN 1
+#define MMC_IPCSR_RXICMPERRPKTS_POS 13
+#define MMC_IPCSR_RXICMPERRPKTS_LEN 1
+#define MMC_IPCSR_RXICMPGDPKTS_POS 12
+#define MMC_IPCSR_RXICMPGDPKTS_LEN 1
+#define MMC_IPCSR_RXTCPERRPKTS_POS 11
+#define MMC_IPCSR_RXTCPERRPKTS_LEN 1
+#define MMC_IPCSR_RXTCPGDPKTS_POS 10
+#define MMC_IPCSR_RXTCPGDPKTS_LEN 1
+#define MMC_IPCSR_RXUDPERRPKTS_POS 9
+#define MMC_IPCSR_RXUDPERRPKTS_LEN 1
+#define MMC_IPCSR_RXUDPGDPKTS_POS 8
+#define MMC_IPCSR_RXUDPGDPKTS_LEN 1
+#define MMC_IPCSR_RXIPV6NOPAYPKTS_POS 7
+#define MMC_IPCSR_RXIPV6NOPAYPKTS_LEN 1
+#define MMC_IPCSR_RXIPV6HDRERRPKTS_POS 6
+#define MMC_IPCSR_RXIPV6HDRERRPKTS_LEN 1
+#define MMC_IPCSR_RXIPV6GDPKTS_POS 5
+#define MMC_IPCSR_RXIPV6GDPKTS_LEN 1
+#define MMC_IPCSR_RXIPV4UBSBLPKTS_POS 4
+#define MMC_IPCSR_RXIPV4UBSBLPKTS_LEN 1
+#define MMC_IPCSR_RXIPV4FRAGPKTS_POS 3
+#define MMC_IPCSR_RXIPV4FRAGPKTS_LEN 1
+#define MMC_IPCSR_RXIPV4NOPAYPKTS_POS 2
+#define MMC_IPCSR_RXIPV4NOPAYPKTS_LEN 1
+#define MMC_IPCSR_RXIPV4HDRERRPKTS_POS 1
+#define MMC_IPCSR_RXIPV4HDRERRPKTS_LEN 1
+#define MMC_IPCSR_RXIPV4GDPKTS_POS 0
+#define MMC_IPCSR_RXIPV4GDPKTS_LEN 1
+#define MMC_RISR_RXLPITRAN_POS 27
+#define MMC_RISR_RXLPITRAN_LEN 1
+#define MMC_RISR_RXLPIUSEC_POS 26
+#define MMC_RISR_RXLPIUSEC_LEN 1
+#define MMC_RISR_RXCTRLFRAMES_POS 25
+#define MMC_RISR_RXCTRLFRAMES_LEN 1
+#define MMC_RISR_RXRCVERROR_POS 24
+#define MMC_RISR_RXRCVERROR_LEN 1
+#define MMC_RISR_RXWATCHDOGERROR_POS 23
+#define MMC_RISR_RXWATCHDOGERROR_LEN 1
+#define MMC_RISR_RXVLANFRAMES_GB_POS 22
+#define MMC_RISR_RXVLANFRAMES_GB_LEN 1
+#define MMC_RISR_RXFIFOOVERFLOW_POS 21
+#define MMC_RISR_RXFIFOOVERFLOW_LEN 1
+#define MMC_RISR_RXPAUSEFRAMES_POS 20
+#define MMC_RISR_RXPAUSEFRAMES_LEN 1
+#define MMC_RISR_RXOUTOFRANGETYPE_POS 19
+#define MMC_RISR_RXOUTOFRANGETYPE_LEN 1
+#define MMC_RISR_RXLENGTHERROR_POS 18
+#define MMC_RISR_RXLENGTHERROR_LEN 1
+#define MMC_RISR_RXUNICASTFRAMES_G_POS 17
+#define MMC_RISR_RXUNICASTFRAMES_G_LEN 1
+#define MMC_RISR_RX1024TOMAXOCTETS_GB_POS 16
+#define MMC_RISR_RX1024TOMAXOCTETS_GB_LEN 1
+#define MMC_RISR_RX512TO1023OCTETS_GB_POS 15
+#define MMC_RISR_RX512TO1023OCTETS_GB_LEN 1
+#define MMC_RISR_RX256TO511OCTETS_GB_POS 14
+#define MMC_RISR_RX256TO511OCTETS_GB_LEN 1
+#define MMC_RISR_RX128TO255OCTETS_GB_POS 13
+#define MMC_RISR_RX128TO255OCTETS_GB_LEN 1
+#define MMC_RISR_RX65TO127OCTETS_GB_POS 12
+#define MMC_RISR_RX65TO127OCTETS_GB_LEN 1
+#define MMC_RISR_RX64OCTETS_GB_POS 11
+#define MMC_RISR_RX64OCTETS_GB_LEN 1
+#define MMC_RISR_RXOVERSIZE_G_POS 10
+#define MMC_RISR_RXOVERSIZE_G_LEN 1
+#define MMC_RISR_RXUNDERSIZE_G_POS 9
+#define MMC_RISR_RXUNDERSIZE_G_LEN 1
+#define MMC_RISR_RXJABBERERROR_POS 8
+#define MMC_RISR_RXJABBERERROR_LEN 1
+#define MMC_RISR_RXRUNTERROR_POS 7
+#define MMC_RISR_RXRUNTERROR_LEN 1
+#define MMC_RISR_RXALIGNMENTERROR_POS 6
+#define MMC_RISR_RXALIGNMENTERROR_LEN 1
+#define MMC_RISR_RXCRCERROR_POS 5
+#define MMC_RISR_RXCRCERROR_LEN 1
+#define MMC_RISR_RXMULTICASTFRAMES_G_POS 4
+#define MMC_RISR_RXMULTICASTFRAMES_G_LEN 1
+#define MMC_RISR_RXBROADCASTFRAMES_G_POS 3
+#define MMC_RISR_RXBROADCASTFRAMES_G_LEN 1
+#define MMC_RISR_RXOCTETCOUNT_G_POS 2
+#define MMC_RISR_RXOCTETCOUNT_G_LEN 1
+#define MMC_RISR_RXOCTETCOUNT_GB_POS 1
+#define MMC_RISR_RXOCTETCOUNT_GB_LEN 1
+#define MMC_RISR_RXFRAMECOUNT_GB_POS 0
+#define MMC_RISR_RXFRAMECOUNT_GB_LEN 1
+#define MMC_TISR_TXLPITRAN_POS 27
+#define MMC_TISR_TXLPITRAN_LEN 1
+#define MMC_TISR_TXLPIUSEC_POS 26
+#define MMC_TISR_TXLPIUSEC_LEN 1
+#define MMC_TISR_TXOVERSIZE_G_POS 25
+#define MMC_TISR_TXOVERSIZE_G_LEN 1
+#define MMC_TISR_TXVLANFRAMES_G_POS 24
+#define MMC_TISR_TXVLANFRAMES_G_LEN 1
+#define MMC_TISR_TXPAUSEFRAMES_POS 23
+#define MMC_TISR_TXPAUSEFRAMES_LEN 1
+#define MMC_TISR_TXEXCESSDEF_POS 22
+#define MMC_TISR_TXEXCESSDEF_LEN 1
+#define MMC_TISR_TXFRAMECOUNT_G_POS 21
+#define MMC_TISR_TXFRAMECOUNT_G_LEN 1
+#define MMC_TISR_TXOCTETCOUNT_G_POS 20
+#define MMC_TISR_TXOCTETCOUNT_G_LEN 1
+#define MMC_TISR_TXCARRIERERROR_POS 19
+#define MMC_TISR_TXCARRIERERROR_LEN 1
+#define MMC_TISR_TXEXESSCOL_POS 18
+#define MMC_TISR_TXEXESSCOL_LEN 1
+#define MMC_TISR_TXLATECOL_POS 17
+#define MMC_TISR_TXLATECOL_LEN 1
+#define MMC_TISR_TXDEFERRED_POS 16
+#define MMC_TISR_TXDEFERRED_LEN 1
+#define MMC_TISR_TXMULTICOL_G_POS 15
+#define MMC_TISR_TXMULTICOL_G_LEN 1
+#define MMC_TISR_TXSINGLECOL_G_POS 14
+#define MMC_TISR_TXSINGLECOL_G_LEN 1
+#define MMC_TISR_TXUNDERFLOWERROR_POS 13
+#define MMC_TISR_TXUNDERFLOWERROR_LEN 1
+#define MMC_TISR_TXBROADCASTFRAMES_GB_POS 12
+#define MMC_TISR_TXBROADCASTFRAMES_GB_LEN 1
+#define MMC_TISR_TXMULTICASTFRAMES_GB_POS 11
+#define MMC_TISR_TXMULTICASTFRAMES_GB_LEN 1
+#define MMC_TISR_TXUNICASTFRAMES_GB_POS 10
+#define MMC_TISR_TXUNICASTFRAMES_GB_LEN 1
+#define MMC_TISR_TX1024TOMAXOCTETS_GB_POS 9
+#define MMC_TISR_TX1024TOMAXOCTETS_GB_LEN 1
+#define MMC_TISR_TX512TO1023OCTETS_GB_POS 8
+#define MMC_TISR_TX512TO1023OCTETS_GB_LEN 1
+#define MMC_TISR_TX256TO511OCTETS_GB_POS 7
+#define MMC_TISR_TX256TO511OCTETS_GB_LEN 1
+#define MMC_TISR_TX128TO255OCTETS_GB_POS 6
+#define MMC_TISR_TX128TO255OCTETS_GB_LEN 1
+#define MMC_TISR_TX65TO127OCTETS_GB_POS 5
+#define MMC_TISR_TX65TO127OCTETS_GB_LEN 1
+#define MMC_TISR_TX64OCTETS_GB_POS 4
+#define MMC_TISR_TX64OCTETS_GB_LEN 1
+#define MMC_TISR_TXMULTICASTFRAMES_G_POS 3
+#define MMC_TISR_TXMULTICASTFRAMES_G_LEN 1
+#define MMC_TISR_TXBROADCASTFRAMES_G_POS 2
+#define MMC_TISR_TXBROADCASTFRAMES_G_LEN 1
+#define MMC_TISR_TXFRAMECOUNT_GB_POS 1
+#define MMC_TISR_TXFRAMECOUNT_GB_LEN 1
+#define MMC_TISR_TXOCTETCOUNT_GB_POS 0
+#define MMC_TISR_TXOCTETCOUNT_GB_LEN 1
+
+/* IEEE 1588 PTP register offsets */
+#define PTP_TCR 0xb00 /* Timestamp Control Reg */
+#define PTP_SSIR 0xb04 /* Sub-Second Increment Reg */
+#define PTP_STSR 0xb08 /* System Time Seconds Reg */
+#define PTP_STNSR 0xb0c /* System Time Nanoseconds Reg */
+#define PTP_STSUR 0xb10 /* System Time Seconds Update Reg */
+#define PTP_STNSUR 0xb14 /* System Time Nanoseconds Update Reg */
+#define PTP_TAR 0xb18 /* Timestamp Addend Reg */
+#define PTP_TTSN 0xb30 /* Tx Timestamp status Nanoseconds Reg */
+#define PTP_TTN 0xb34 /* Tx Timestamp status Seconds Reg */
+
+/* PTP Timestamp control register entry bit positions and sizes */
+#define PTP_SSIR_SSINC_POS 16
+#define PTP_SSIR_SSINC_LEN 8
+#define PTP_STNSUR_ADDSUB_POS 31
+#define PTP_STNSUR_ADDSUB_LEN 1
+#define PTP_STNSUR_TSSSS_POS 0
+#define PTP_STNSUR_TSSSS_LEN 31
+#define PTP_TCR_AV8021ASMEN_POS 28
+#define PTP_TCR_AV8021ASMEN_LEN 1
+#define PTP_TCR_SNAPTYPSEL_POS 16
+#define PTP_TCR_SNAPTYPSEL_LEN 2
+#define PTP_TCR_TSMSTRENA_POS 15
+#define PTP_TCR_TSMSTRENA_LEN 1
+#define PTP_TCR_TSEVNTENA_POS 14
+#define PTP_TCR_TSEVNTENA_LEN 1
+#define PTP_TCR_TSIPV4ENA_POS 13
+#define PTP_TCR_TSIPV4ENA_LEN 1
+#define PTP_TCR_TSIPV6ENA_POS 12
+#define PTP_TCR_TSIPV6ENA_LEN 1
+#define PTP_TCR_TSIPENA_POS 11
+#define PTP_TCR_TSIPENA_LEN 1
+#define PTP_TCR_TSVER2ENA_POS 10
+#define PTP_TCR_TSVER2ENA_LEN 1
+#define PTP_TCR_TSCTRLSSR_POS 9
+#define PTP_TCR_TSCTRLSSR_LEN 1
+#define PTP_TCR_TSENALL_POS 8
+#define PTP_TCR_TSENALL_LEN 1
+#define PTP_TCR_TSADDREG_POS 5
+#define PTP_TCR_TSADDREG_LEN 1
+#define PTP_TCR_TSUPDT_POS 3
+#define PTP_TCR_TSUPDT_LEN 1
+#define PTP_TCR_TSINIT_POS 2
+#define PTP_TCR_TSINIT_LEN 1
+#define PTP_TCR_TSCFUPDT_POS 1
+#define PTP_TCR_TSCFUPDT_LEN 1
+#define PTP_TCR_TSENA_POS 0
+#define PTP_TCR_TSENA_LEN 1
+
+/* PTP Timestamp control register value */
+#define PTP_DIGITAL_ROLLOVER_MODE 0x3B9ACA00 /* 10e9-1 ns */
+#define PTP_BINARY_ROLLOVER_MODE 0x80000000 /* ~0.466 ns */
+
+/* MTL register offsets */
+#define MTL_OMR 0xc00
+#define MTL_RQDCM0R 0xc30
+#define MTL_RQDCM1R 0xc34
+
+/* MTL register entry bit positions and sizes */
+#define MTL_OMR_TSA_POS 5
+#define MTL_OMR_TSA_LEN 2
+#define MTL_OMR_RAA_POS 2
+#define MTL_OMR_RAA_LEN 1
+
+/* MTL queue register offsets
+ * Multiple queues can be active. The first queue has registers
+ * that begin at 0xd00. Each subsequent queue has registers that
+ * are accessed using an offset of 0x40 from the previous queue.
+ */
+#define MTL_Q_BASE 0x0d00
+#define MTL_Q_BASE_OFFSET 0x0040
+#define MTL_QX_BASE(x) (MTL_Q_BASE + \
+ ((x) * MTL_Q_BASE_OFFSET))
+
+#define MTL_Q_TQOMR(x) MTL_QX_BASE(x)
+#define MTL_Q_TESR(x) (MTL_QX_BASE(x) + 0x14)
+#define MTL_Q_TQWR(x) (MTL_QX_BASE(x) + 0x18)
+#define MTL_Q_ICSR(x) (MTL_QX_BASE(x) + 0x2c)
+#define MTL_Q_RQOMR(x) (MTL_QX_BASE(x) + 0x30)
+
+/* MTL queue register entry bit positions and sizes */
+#define MTL_ICR_RXOIE_POS 24
+#define MTL_ICR_RXOIE_LEN 1
+#define MTL_ICR_RXOVFIS_POS 16
+#define MTL_ICR_RXOVFIS_LEN 1
+#define MTL_ICR_ABPSIE_POS 9
+#define MTL_ICR_ABPSIE_LEN 1
+#define MTL_ICR_TXUIE_POS 8
+#define MTL_ICR_TXUIE_LEN 1
+#define MTL_ICR_ABPSIS_POS 1
+#define MTL_ICR_ABPSIS_LEN 1
+#define MTL_ICR_TXUNFIS_POS 0
+#define MTL_ICR_TXUNFIS_LEN 1
+#define MTL_Q_RQOMR_RQS_POS 20
+#define MTL_Q_RQOMR_RQS_LEN 10
+#define MTL_Q_RQOMR_RFD_POS 14
+#define MTL_Q_RQOMR_RFD_LEN 6
+#define MTL_Q_RQOMR_RFA_POS 8
+#define MTL_Q_RQOMR_RFA_LEN 6
+#define MTL_Q_RQOMR_EHFC_POS 7
+#define MTL_Q_RQOMR_EHFC_LEN 1
+#define MTL_Q_RQOMR_RSF_POS 5
+#define MTL_Q_RQOMR_RSF_LEN 1
+#define MTL_Q_RQOMR_FEP_POS 4
+#define MTL_Q_RQOMR_FEP_LEN 1
+#define MTL_Q_RQOMR_FUP_POS 3
+#define MTL_Q_RQOMR_FUP_LEN 1
+#define MTL_Q_RQOMR_RTC_POS 0
+#define MTL_Q_RQOMR_RTC_LEN 2
+#define MTL_Q_TQWR_QW_POS 0
+#define MTL_Q_TQWR_QW_LEN 21
+#define MTL_Q_TQOMR_FTQ_POS 0
+#define MTL_Q_TQOMR_FTQ_LEN 1
+#define MTL_Q_TQOMR_TQS_POS 16
+#define MTL_Q_TQOMR_TQS_LEN 10
+#define MTL_Q_TQOMR_TSF_POS 1
+#define MTL_Q_TQOMR_TSF_LEN 1
+#define MTL_Q_TQOMR_TTC_POS 4
+#define MTL_Q_TQOMR_TTC_LEN 3
+#define MTL_Q_TQOMR_TXQEN_POS 2
+#define MTL_Q_TQOMR_TXQEN_LEN 2
+
+/* MTL queue register value */
+#define MTL_RSF_DISABLE 0x00
+#define MTL_RSF_ENABLE 0x01
+#define MTL_TSF_DISABLE 0x00
+#define MTL_TSF_ENABLE 0x01
+#define MTL_RX_THRESHOLD_64 0x00
+#define MTL_RX_THRESHOLD_96 0x02
+#define MTL_RX_THRESHOLD_128 0x03
+#define MTL_TX_THRESHOLD_64 0x00
+#define MTL_TX_THRESHOLD_96 0x02
+#define MTL_TX_THRESHOLD_128 0x03
+#define MTL_TX_THRESHOLD_192 0x04
+#define MTL_TX_THRESHOLD_256 0x05
+#define MTL_TX_THRESHOLD_384 0x06
+#define MTL_TX_THRESHOLD_512 0x07
+#define MTL_TSA_WRR 0x00
+#define MTL_TSA_WFQ 0x01
+#define MTL_TSA_DWRR 0x02
+#define MTL_TSA_SP 0x03
+#define MTL_RAA_SP 0x00
+#define MTL_RAA_WSP 0x01
+#define MTL_Q_DISABLED 0x00
+#define MTL_Q_ENABLED 0x02
+#define MTL_RQDCM0R_Q0MDMACH 0x00000000
+#define MTL_RQDCM0R_Q1MDMACH 0x00000100
+#define MTL_RQDCM0R_Q2MDMACH 0x00020000
+#define MTL_RQDCM0R_Q3MDMACH 0x03000000
+#define MTL_RQDCM1R_Q4MDMACH 0x00000004
+#define MTL_RQDCM1R_Q5MDMACH 0x00000500
+#define MTL_RQDCM1R_Q6MDMACH 0x00060000
+#define MTL_RQDCM1R_Q7MDMACH 0x07000000
+
+/* DMA register offsets */
+#define DMA_MR 0x1000
+#define DMA_SBMR 0x1004
+#define DMA_ISR 0x1008
+#define DMA_DSR0 0x100c
+#define DMA_DSR1 0x1010
+
+/* DMA register entry bit positions and sizes */
+#define DMA_ISR_MACIS_POS 17
+#define DMA_ISR_MACIS_LEN 1
+#define DMA_ISR_MTLIS_POS 16
+#define DMA_ISR_MTLIS_LEN 1
+#define DMA_MR_SWR_POS 0
+#define DMA_MR_SWR_LEN 1
+#define DMA_SBMR_WR_OSR_LMT_POS 24
+#define DMA_SBMR_WR_OSR_LMT_LEN 3
+#define DMA_SBMR_RD_OSR_LMT_POS 16
+#define DMA_SBMR_RD_OSR_LMT_LEN 3
+#define DMA_SBMR_BLEN_16_POS 3
+#define DMA_SBMR_BLEN_16_LEN 1
+#define DMA_SBMR_BLEN_8_POS 2
+#define DMA_SBMR_BLEN_8_LEN 1
+#define DMA_SBMR_BLEN_4_POS 1
+#define DMA_SBMR_BLEN_4_LEN 1
+#define DMA_SBMR_FB_POS 0
+#define DMA_SBMR_FB_LEN 1
+
+/* DMA register values */
+#define DMA_SBMR_OSR_MAX 7
+#define DMA_DSR_RPS_LEN 4
+#define DMA_DSR_TPS_LEN 4
+#define DMA_DSR_Q_LEN (DMA_DSR_RPS_LEN + DMA_DSR_TPS_LEN)
+#define DMA_DSR0_TPS_START 12
+#define DMA_DSR0_RPS_START 8
+#define DMA_DSRX_FIRST_QUEUE 3
+#define DMA_DSRX_INC 4
+#define DMA_DSRX_QPR 4
+#define DMA_DSRX_TPS_START 4
+#define DMA_DSRX_RPS_START 0
+#define DMA_ISR_MACIS_POS 17
+#define DMA_ISR_MACIS_LEN 1
+#define MAC_ISR_RGSMIIS_POS 0
+#define MAC_ISR_RGSMIIS_LEN 1
+
+/* DMA channel register offsets
+ * Multiple channels can be active. The first channel has registers
+ * that begin at 0x1100. Each subsequent channel has registers that
+ * are accessed using an offset of 0x80 from the previous channel.
+ */
+#define DMA_CH_BASE 0x1100
+#define DMA_CH_INC 0x80
+
+#define DMA_CHX_BASE(x) (DMA_CH_BASE + \
+ ((x) * DMA_CH_INC))
+
+#define DMA_CH_CR(x) DMA_CHX_BASE(x)
+#define DMA_CH_TCR(x) (DMA_CHX_BASE(x) + 0x04)
+#define DMA_CH_RCR(x) (DMA_CHX_BASE(x) + 0x08)
+#define DMA_CH_TDLR(x) (DMA_CHX_BASE(x) + 0x14)
+#define DMA_CH_RDLR(x) (DMA_CHX_BASE(x) + 0x1c)
+#define DMA_CH_TDTR(x) (DMA_CHX_BASE(x) + 0x20)
+#define DMA_CH_RDTR(x) (DMA_CHX_BASE(x) + 0x28)
+#define DMA_CH_TDRLR(x) (DMA_CHX_BASE(x) + 0x2c)
+#define DMA_CH_RDRLR(x) (DMA_CHX_BASE(x) + 0x30)
+#define DMA_CH_IER(x) (DMA_CHX_BASE(x) + 0x34)
+#define DMA_CH_RIWT(x) (DMA_CHX_BASE(x) + 0x38)
+#define DMA_CH_SR(x) (DMA_CHX_BASE(x) + 0x60)
+
+/* DMA channel register entry bit positions and sizes */
+#define DMA_CH_CR_PBLX8_POS 16
+#define DMA_CH_CR_PBLX8_LEN 1
+#define DMA_CH_CR_SPH_POS 24
+#define DMA_CH_CR_SPH_LEN 1
+#define DMA_CH_IER_AIE_POS 14
+#define DMA_CH_IER_AIE_LEN 1
+#define DMA_CH_IER_FBEE_POS 12
+#define DMA_CH_IER_FBEE_LEN 1
+#define DMA_CH_IER_NIE_POS 15
+#define DMA_CH_IER_NIE_LEN 1
+#define DMA_CH_IER_RBUE_POS 7
+#define DMA_CH_IER_RBUE_LEN 1
+#define DMA_CH_IER_RIE_POS 6
+#define DMA_CH_IER_RIE_LEN 1
+#define DMA_CH_IER_RSE_POS 8
+#define DMA_CH_IER_RSE_LEN 1
+#define DMA_CH_IER_TBUE_POS 2
+#define DMA_CH_IER_TBUE_LEN 1
+#define DMA_CH_IER_TIE_POS 0
+#define DMA_CH_IER_TIE_LEN 1
+#define DMA_CH_IER_TXSE_POS 1
+#define DMA_CH_IER_TXSE_LEN 1
+#define DMA_CH_ISR_NIS_POS 15
+#define DMA_CH_ISR_NIS_LEN 1
+#define DMA_CH_ISR_AIS_POS 14
+#define DMA_CH_ISR_AIS_LEN 1
+#define DMA_CH_ISR_CDE_POS 13
+#define DMA_CH_ISR_CDE_LEN 1
+#define DMA_CH_ISR_FBE_POS 12
+#define DMA_CH_ISR_FBE_LEN 1
+#define DMA_CH_ISR_ERI_POS 11
+#define DMA_CH_ISR_ERI_LEN 1
+#define DMA_CH_ISR_ETI_POS 10
+#define DMA_CH_ISR_ETI_LEN 1
+#define DMA_CH_ISR_RWT_POS 9
+#define DMA_CH_ISR_RWT_LEN 1
+#define DMA_CH_ISR_RPS_POS 8
+#define DMA_CH_ISR_RPS_LEN 1
+#define DMA_CH_ISR_RBU_POS 7
+#define DMA_CH_ISR_RBU_LEN 1
+#define DMA_CH_ISR_RI_POS 6
+#define DMA_CH_ISR_RI_LEN 1
+#define DMA_CH_ISR_TBU_POS 2
+#define DMA_CH_ISR_TBU_LEN 1
+#define DMA_CH_ISR_TPS_POS 1
+#define DMA_CH_ISR_TPS_LEN 1
+#define DMA_CH_ISR_TI_POS 0
+#define DMA_CH_ISR_TI_LEN 1
+#define DMA_CH_RCR_PBL_POS 16
+#define DMA_CH_RCR_PBL_LEN 6
+#define DMA_CH_RCR_RBSZ_POS 1
+#define DMA_CH_RCR_RBSZ_LEN 14
+#define DMA_CH_RCR_SR_POS 0
+#define DMA_CH_RCR_SR_LEN 1
+#define DMA_CH_RIWT_RWT_POS 0
+#define DMA_CH_RIWT_RWT_LEN 8
+#define DMA_CH_TCR_PBL_POS 16
+#define DMA_CH_TCR_PBL_LEN 6
+#define DMA_CH_TCR_TSE_POS 12
+#define DMA_CH_TCR_TSE_LEN 1
+#define DMA_CH_TCR_OSP_POS 4
+#define DMA_CH_TCR_OSP_LEN 1
+#define DMA_CH_TCR_ST_POS 0
+#define DMA_CH_TCR_ST_LEN 1
+
+/* DMA channel register values */
+#define DMA_OSP_DISABLE 0x00
+#define DMA_OSP_ENABLE 0x01
+#define DMA_PBL_1 1
+#define DMA_PBL_2 2
+#define DMA_PBL_4 4
+#define DMA_PBL_8 8
+#define DMA_PBL_16 16
+#define DMA_PBL_32 32
+#define DMA_PBL_64 64
+#define DMA_PBL_128 128
+#define DMA_PBL_256 256
+#define DMA_PBL_X8_DISABLE 0x00
+#define DMA_PBL_X8_ENABLE 0x01
+
+#define GMAC_COPYBREAK_DEFAULT 256
+
+#endif /* __MT2712_REG_H__ */
diff --git a/drivers/net/ethernet/mediatek/gmac/mtk-gmac.h b/drivers/net/ethernet/mediatek/gmac/mtk-gmac.h
new file mode 100644
index 0000000..8dedcce
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/gmac/mtk-gmac.h
@@ -0,0 +1,683 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ */
+#ifndef __MTK_GMAC_H__
+#define __MTK_GMAC_H__
+
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/clocksource.h>
+#include <linux/dma-mapping.h>
+#include <linux/gpio.h>
+#include <linux/if_vlan.h>
+#include <linux/netdevice.h>
+#include <linux/net_tstamp.h>
+#include <linux/phy.h>
+#include <linux/ptp_clock_kernel.h>
+#include <linux/timecounter.h>
+#include <linux/timer.h>
+#include <linux/time64.h>
+#include <linux/workqueue.h>
+
+#include "mtk-gmac-desc.h"
+#include "mtk-gmac-reg.h"
+
+#define GMAC_DRV_NAME "mtk-gmac"
+#define GMAC_DRV_VERSION "1.0.0"
+#define GMAC_DRV_DESC "MediaTek GMAC Driver"
+
+/* Descriptor related parameters */
+#define GMAC_TX_DESC_CNT 1024
+#define GMAC_TX_DESC_MIN_FREE (GMAC_TX_DESC_CNT >> 3)
+#define GMAC_TX_DESC_MAX_PROC (GMAC_TX_DESC_CNT >> 1)
+#define GMAC_RX_DESC_CNT 1024
+#define GMAC_RX_DESC_MAX_DIRTY (GMAC_RX_DESC_CNT >> 3)
+
+/* Descriptors required for maximum contiguous TSO/GSO packet */
+#define GMAC_TX_MAX_SPLIT ((GSO_MAX_SIZE / GMAC_TX_MAX_BUF_SIZE) + 1)
+
+/* Maximum possible descriptors needed for a SKB */
+#define GMAC_TX_MAX_DESC_NR (MAX_SKB_FRAGS + GMAC_TX_MAX_SPLIT + 2)
+
+#define GMAC_TX_MAX_BUF_SIZE (SZ_16K - 1)
+#define GMAC_RX_MIN_BUF_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
+#define GMAC_RX_BUF_ALIGN 64
+
+#define GMAC_MAX_FIFO 81920
+
+#define GMAC_MAX_DMA_CHANNELS 8
+#define GMAC_DMA_STOP_TIMEOUT 5
+#define GMAC_DMA_INTERRUPT_MASK 0x31c7
+
+/* Default coalescing parameters */
+#define GMAC_INIT_DMA_TX_USECS 1000
+#define GMAC_INIT_DMA_TX_FRAMES 25
+#define GMAC_INIT_DMA_RX_USECS 30
+#define GMAC_INIT_DMA_RX_FRAMES 25
+#define GMAC_MAX_DMA_RIWT 0xff
+#define GMAC_MIN_DMA_RIWT 0x01
+
+/* Flow control queue count */
+#define GMAC_MAX_FLOW_CONTROL_QUEUES 8
+
+/* System clock is axi clk */
+#define GMAC_SYSCLOCK (273000000 / 2)
+
+/* Maximum MAC address hash table size (256 bits = 8 bytes) */
+#define GMAC_MAC_HASH_TABLE_SIZE 8
+
+/* Helper macro for descriptor handling
+ * Always use GMAC_GET_DESC_DATA to access the descriptor data
+ */
+#define GMAC_GET_DESC_DATA(ring, idx) ({ \
+ typeof(ring) _ring = (ring); \
+ ((_ring)->desc_data_head + \
+ ((idx) & ((_ring)->dma_desc_count - 1))); \
+})
+
+struct gmac_pdata;
+
+enum gmac_clks_map {
+ GMAC_CLK_AXI_DRAM,
+ GMAC_CLK_APB_REG,
+ GMAC_CLK_MAC_EXT,
+ GMAC_CLK_PTP,
+ GMAC_CLK_PTP_PARENT,
+ GMAC_CLK_PTP_TOP,
+ GMAC_CLK_MAX
+};
+
+enum gmac_int {
+ GMAC_INT_DMA_CH_SR_TI,
+ GMAC_INT_DMA_CH_SR_TPS,
+ GMAC_INT_DMA_CH_SR_TBU,
+ GMAC_INT_DMA_CH_SR_RI,
+ GMAC_INT_DMA_CH_SR_RBU,
+ GMAC_INT_DMA_CH_SR_RPS,
+ GMAC_INT_DMA_CH_SR_TI_RI,
+ GMAC_INT_DMA_CH_SR_FBE,
+ GMAC_INT_DMA_ALL,
+};
+
+struct gmac_stats {
+ /* MMC TX counters */
+ u64 txoctetcount_gb;
+ u64 txframecount_gb;
+ u64 txbroadcastframes_g;
+ u64 txmulticastframes_g;
+ u64 tx64octets_gb;
+ u64 tx65to127octets_gb;
+ u64 tx128to255octets_gb;
+ u64 tx256to511octets_gb;
+ u64 tx512to1023octets_gb;
+ u64 tx1024tomaxoctets_gb;
+ u64 txunicastframes_gb;
+ u64 txmulticastframes_gb;
+ u64 txbroadcastframes_gb;
+ u64 txunderflowerror;
+ u64 txsinglecol_g;
+ u64 txmulticol_g;
+ u64 txdeferred;
+ u64 txlatecol;
+ u64 txexesscol;
+ u64 txcarriererror;
+ u64 txoctetcount_g;
+ u64 txframecount_g;
+ u64 txexcessdef;
+ u64 txpauseframes;
+ u64 txvlanframes_g;
+ u64 txosizeframe_g;
+ u64 txlpiusec;
+ u64 txlpitran;
+
+ /* MMC RX counters */
+ u64 rxframecount_gb;
+ u64 rxoctetcount_gb;
+ u64 rxoctetcount_g;
+ u64 rxbroadcastframes_g;
+ u64 rxmulticastframes_g;
+ u64 rxcrcerror;
+ u64 rxalignerror;
+ u64 rxrunterror;
+ u64 rxjabbererror;
+ u64 rxundersize_g;
+ u64 rxoversize_g;
+ u64 rx64octets_gb;
+ u64 rx65to127octets_gb;
+ u64 rx128to255octets_gb;
+ u64 rx256to511octets_gb;
+ u64 rx512to1023octets_gb;
+ u64 rx1024tomaxoctets_gb;
+ u64 rxunicastframes_g;
+ u64 rxlengtherror;
+ u64 rxoutofrangetype;
+ u64 rxpauseframes;
+ u64 rxfifooverflow;
+ u64 rxvlanframes_gb;
+ u64 rxwatchdogerror;
+ u64 rxreceiveerror;
+ u64 rxctrlframes_g;
+ u64 rxlpiusec;
+ u64 rxlpitran;
+
+ /* MMC RXIPC counters */
+ u64 rxipv4_g;
+ u64 rxipv4hderr;
+ u64 rxipv4nopay;
+ u64 rxipv4frag;
+ u64 rxipv4udsbl;
+ u64 rxipv6octets_g;
+ u64 rxipv6hderroctets;
+ u64 rxipv6nopayoctets;
+ u64 rxudp_g;
+ u64 rxudperr;
+ u64 rxtcp_g;
+ u64 rxtcperr;
+ u64 rxicmp_g;
+ u64 rxicmperr;
+ u64 rxipv4octets_g;
+ u64 rxipv4hderroctets;
+ u64 rxipv4nopayoctets;
+ u64 rxipv4fragoctets;
+ u64 rxipv4udsbloctets;
+ u64 rxipv6_g;
+ u64 rxipv6hderr;
+ u64 rxipv6nopay;
+ u64 rxudpoctets_g;
+ u64 rxudperroctets;
+ u64 rxtcpoctets_g;
+ u64 rxtcperroctets;
+ u64 rxicmpoctets_g;
+ u64 rxicmperroctets;
+
+ /* Extra counters */
+ u64 tx_tso_packets;
+ u64 rx_split_header_packets;
+ u64 tx_process_stopped;
+ u64 rx_process_stopped;
+ u64 tx_buffer_unavailable;
+ u64 rx_buffer_unavailable;
+ u64 fatal_bus_error;
+ u64 tx_vlan_packets;
+ u64 rx_vlan_packets;
+ u64 tx_timestamp_packets;
+ u64 rx_timestamp_packets;
+ u64 napi_poll_isr;
+ u64 napi_poll_txtimer;
+};
+
+struct gmac_ring_buf {
+ struct sk_buff *skb;
+ dma_addr_t skb_dma;
+ unsigned int skb_len;
+};
+
+/* Common Tx and Rx DMA hardware descriptor */
+struct gmac_dma_desc {
+ u32 desc0;
+ u32 desc1;
+ u32 desc2;
+ u32 desc3;
+};
+
+/* TxRx-related desc data */
+struct gmac_trx_desc_data {
+ unsigned int packets; /* BQL packet count */
+ unsigned int bytes; /* BQL byte count */
+};
+
+struct gmac_pkt_info {
+ struct sk_buff *skb;
+
+ unsigned int attributes;
+
+ unsigned int errors;
+
+ /* descriptors needed for this packet */
+ unsigned int desc_count;
+ unsigned int length;
+
+ unsigned int tx_packets;
+ unsigned int tx_bytes;
+
+ unsigned int header_len;
+ unsigned int tcp_header_len;
+ unsigned int tcp_payload_len;
+ unsigned short mss;
+
+ unsigned short vlan_ctag;
+
+ u64 rx_tstamp;
+};
+
+struct gmac_desc_data {
+ /* dma_desc: Virtual address of descriptor
+ * dma_desc_addr: DMA address of descriptor
+ */
+ struct gmac_dma_desc *dma_desc;
+ dma_addr_t dma_desc_addr;
+
+ /* skb: Virtual address of SKB
+ * skb_dma: DMA address of SKB data
+ * skb_dma_len: Length of SKB DMA area
+ */
+ struct sk_buff *skb;
+ dma_addr_t skb_dma;
+ unsigned int skb_dma_len;
+
+ /* Tx/Rx -related data */
+ struct gmac_trx_desc_data trx;
+
+ unsigned int mapped_as_page;
+
+ /* Incomplete receive save location. If the budget is exhausted
+ * or the last descriptor (last normal descriptor or a following
+ * context descriptor) has not been DMA'd yet the current state
+ * of the receive processing needs to be saved.
+ */
+ unsigned int state_saved;
+ struct {
+ struct sk_buff *skb;
+ unsigned int len;
+ unsigned int error;
+ } state;
+};
+
+struct gmac_ring {
+ /* Per packet related information */
+ struct gmac_pkt_info pkt_info;
+
+ /* Virtual/DMA addresses of DMA descriptor list and the total count */
+ struct gmac_dma_desc *dma_desc_head;
+ dma_addr_t dma_desc_head_addr;
+ unsigned int dma_desc_count;
+
+ /* Array of descriptor data corresponding the DMA descriptor
+ * (always use the GMAC_GET_DESC_DATA macro to access this data)
+ */
+ struct gmac_desc_data *desc_data_head;
+
+ /* Ring index values
+ * cur - Tx: index of descriptor to be used for current transfer
+ * Rx: index of descriptor to check for packet availability
+ * dirty - Tx: index of descriptor to check for transfer complete
+ * Rx: index of descriptor to check for buffer reallocation
+ */
+ unsigned int cur;
+ unsigned int dirty;
+
+ /* Coalesce frame count used for interrupt bit setting */
+ unsigned int coalesce_count;
+
+ union {
+ struct {
+ unsigned int xmit_more;
+ unsigned int queue_stopped;
+ unsigned short cur_mss;
+ unsigned short cur_vlan_ctag;
+ } tx;
+ };
+} ____cacheline_aligned;
+
+struct gmac_channel {
+ char name[16];
+
+ /* Address of private data area for device */
+ struct gmac_pdata *pdata;
+
+ /* Queue index and base address of queue's DMA registers */
+ unsigned int queue_index;
+ void __iomem *dma_regs;
+
+ /* Per channel interrupt irq number */
+ int dma_irq;
+ char dma_irq_name[IFNAMSIZ + 32];
+
+ /* Netdev related settings */
+ struct napi_struct napi;
+
+ unsigned int saved_ier;
+
+ unsigned int tx_timer_active;
+ struct timer_list tx_timer;
+
+ struct gmac_ring *tx_ring;
+ struct gmac_ring *rx_ring;
+} ____cacheline_aligned;
+
+struct gmac_desc_ops {
+ int (*alloc_channles_and_rings)(struct gmac_pdata *pdata);
+ void (*free_channels_and_rings)(struct gmac_pdata *pdata);
+ int (*map_tx_skb)(struct gmac_channel *channel,
+ struct sk_buff *skb);
+ int (*map_rx_buffer)(struct gmac_pdata *pdata,
+ struct gmac_ring *ring,
+ struct gmac_desc_data *desc_data);
+ void (*unmap_desc_data)(struct gmac_pdata *pdata,
+ struct gmac_desc_data *desc_data,
+ unsigned int tx_rx);
+ void (*tx_desc_init)(struct gmac_pdata *pdata);
+ void (*rx_desc_init)(struct gmac_pdata *pdata);
+};
+
+struct gmac_hw_ops {
+ int (*init)(struct gmac_pdata *pdata);
+ int (*exit)(struct gmac_pdata *pdata);
+
+ int (*tx_complete)(struct gmac_dma_desc *dma_desc);
+
+ void (*enable_tx)(struct gmac_pdata *pdata);
+ void (*disable_tx)(struct gmac_pdata *pdata);
+ void (*enable_rx)(struct gmac_pdata *pdata);
+ void (*disable_rx)(struct gmac_pdata *pdata);
+
+ int (*enable_int)(struct gmac_channel *channel,
+ enum gmac_int int_id);
+ int (*disable_int)(struct gmac_channel *channel,
+ enum gmac_int int_id);
+ void (*dev_xmit)(struct gmac_channel *channel);
+ int (*dev_read)(struct gmac_channel *channel);
+
+ int (*set_mac_address)(struct gmac_pdata *pdata, u8 *addr,
+ unsigned int idx);
+ int (*config_rx_mode)(struct gmac_pdata *pdata);
+ int (*enable_rx_csum)(struct gmac_pdata *pdata);
+ int (*disable_rx_csum)(struct gmac_pdata *pdata);
+
+ /* For MII speed configuration */
+ int (*set_gmii_10_speed)(struct gmac_pdata *pdata);
+ int (*set_gmii_100_speed)(struct gmac_pdata *pdata);
+ int (*set_gmii_1000_speed)(struct gmac_pdata *pdata);
+
+ int (*set_full_duplex)(struct gmac_pdata *pdata);
+ int (*set_half_duplex)(struct gmac_pdata *pdata);
+
+ /* For descriptor related operation */
+ void (*tx_desc_init)(struct gmac_channel *channel);
+ void (*rx_desc_init)(struct gmac_channel *channel);
+ void (*tx_desc_reset)(struct gmac_desc_data *desc_data);
+ void (*rx_desc_reset)(struct gmac_pdata *pdata,
+ struct gmac_desc_data *desc_data,
+ unsigned int index);
+ int (*is_last_desc)(struct gmac_dma_desc *dma_desc);
+ int (*is_context_desc)(struct gmac_dma_desc *dma_desc);
+ void (*tx_start_xmit)(struct gmac_channel *channel,
+ struct gmac_ring *ring);
+
+ /* For Flow Control */
+ int (*config_tx_flow_control)(struct gmac_pdata *pdata);
+ int (*config_rx_flow_control)(struct gmac_pdata *pdata);
+
+ /* For Vlan related config */
+ int (*enable_rx_vlan_stripping)(struct gmac_pdata *pdata);
+ int (*disable_rx_vlan_stripping)(struct gmac_pdata *pdata);
+ int (*enable_rx_vlan_filtering)(struct gmac_pdata *pdata);
+ int (*disable_rx_vlan_filtering)(struct gmac_pdata *pdata);
+ int (*update_vlan_hash_table)(struct gmac_pdata *pdata);
+ int (*update_vlan)(struct gmac_pdata *pdata);
+
+ /* For RX coalescing */
+ int (*config_rx_coalesce)(struct gmac_pdata *pdata);
+ int (*config_tx_coalesce)(struct gmac_pdata *pdata);
+ unsigned int (*usec_to_riwt)(struct gmac_pdata *pdata,
+ unsigned int usec);
+ unsigned int (*riwt_to_usec)(struct gmac_pdata *pdata,
+ unsigned int riwt);
+
+ /* For RX and TX threshold config */
+ int (*config_rx_threshold)(struct gmac_pdata *pdata,
+ unsigned int val);
+ int (*config_tx_threshold)(struct gmac_pdata *pdata,
+ unsigned int val);
+
+ /* For RX and TX Store and Forward Mode config */
+ int (*config_rsf_mode)(struct gmac_pdata *pdata,
+ unsigned int val);
+ int (*config_tsf_mode)(struct gmac_pdata *pdata,
+ unsigned int val);
+
+ /* For TX DMA Operate on Second Frame config */
+ int (*config_osp_mode)(struct gmac_pdata *pdata);
+
+ /* For RX and TX PBL config */
+ int (*config_rx_pbl_val)(struct gmac_pdata *pdata);
+ int (*config_tx_pbl_val)(struct gmac_pdata *pdata);
+ int (*config_pblx8)(struct gmac_pdata *pdata);
+
+ /* For MMC statistics */
+ void (*rxipc_mmc_int)(struct gmac_pdata *pdata);
+ void (*rx_mmc_int)(struct gmac_pdata *pdata);
+ void (*tx_mmc_int)(struct gmac_pdata *pdata);
+ void (*read_mmc_stats)(struct gmac_pdata *pdata);
+
+ void (*config_hw_timestamping)(struct gmac_pdata *pdata,
+ u32 data);
+ void (*config_sub_second_increment)(struct gmac_pdata *pdata,
+ u32 ptp_clock,
+ u32 *ssinc);
+ int (*init_systime)(struct gmac_pdata *pdata, u32 sec, u32 nsec);
+ int (*config_addend)(struct gmac_pdata *pdata, u32 addend);
+ int (*adjust_systime)(struct gmac_pdata *pdata,
+ u32 sec,
+ u32 nsec,
+ int add_sub);
+ void (*get_systime)(struct gmac_pdata *pdata, u64 *systime);
+ void (*get_tx_hwtstamp)(struct gmac_pdata *pdata,
+ struct gmac_dma_desc *desc,
+ struct sk_buff *skb);
+
+};
+
+/* This structure contains flags that indicate what hardware features
+ * or configurations are present in the device.
+ */
+struct gmac_hw_features {
+ /* HW Version */
+ unsigned int version;
+
+ /* HW Feature Register0 */
+ unsigned int mii; /* 10/100Mbps support */
+ unsigned int gmii; /* 1000Mbps support */
+ unsigned int hd; /* Half Duplex support */
+ unsigned int pcs; /* TBI/SGMII/RTBI PHY interface */
+ unsigned int vlhash; /* VLAN Hash Filter */
+ unsigned int sma; /* SMA(MDIO) Interface */
+ unsigned int rwk; /* PMT remote wake-up packet */
+ unsigned int mgk; /* PMT magic packet */
+ unsigned int mmc; /* RMON module */
+ unsigned int aoe; /* ARP Offload */
+ unsigned int ts; /* IEEE 1588-2008 Advanced Timestamp */
+ unsigned int eee; /* Energy Efficient Ethernet */
+ unsigned int tx_coe; /* Tx Checksum Offload */
+ unsigned int rx_coe; /* Rx Checksum Offload */
+ unsigned int addn_mac; /* Additional MAC Addresses */
+ unsigned int ts_src; /* Timestamp Source */
+ unsigned int sa_vlan_ins; /* Source Address or VLAN Insertion */
+ unsigned int phyifsel; /* PHY interface support */
+
+ /* HW Feature Register1 */
+ unsigned int rx_fifo_size; /* MTL Receive FIFO Size */
+ unsigned int tx_fifo_size; /* MTL Transmit FIFO Size */
+ unsigned int one_step_en; /* One-Step Timingstamping Enable */
+ unsigned int ptp_offload; /* PTP Offload Enable */
+ unsigned int adv_ts_hi; /* Advance Timestamping High Word */
+ unsigned int dma_width; /* DMA width */
+ unsigned int dcb; /* DCB Feature */
+ unsigned int sph; /* Split Header Feature */
+ unsigned int tso; /* TCP Segmentation Offload */
+ unsigned int dma_debug; /* DMA Debug Registers */
+ unsigned int av; /* Audio-Vedio Bridge Option */
+ unsigned int rav; /* Rx Side AV Feature */
+ unsigned int pouost; /* One-Step for PTP over UDP/IP */
+ unsigned int hash_table_size; /* Hash Table Size */
+ unsigned int l3l4_filter_num; /* Number of L3-L4 Filters */
+
+ /* HW Feature Register2 */
+ unsigned int rx_q_cnt; /* Number of MTL Receive Queues */
+ unsigned int tx_q_cnt; /* Number of MTL Transmit Queues */
+ unsigned int rx_ch_cnt; /* Number of DMA Receive Channels */
+ unsigned int tx_ch_cnt; /* Number of DMA Transmit Channels */
+ unsigned int pps_out_num; /* Number of PPS outputs */
+ unsigned int aux_snap_num; /* Number of Aux snapshot inputs */
+};
+
+struct plat_gmac_data {
+ struct regmap *infra_regmap, *peri_regmap;
+ struct clk *clks[GMAC_CLK_MAX];
+ struct device_node *np;
+ int phy_mode;
+ void (*gmac_set_interface)(struct plat_gmac_data *plat);
+ void (*gmac_set_delay)(struct plat_gmac_data *plat);
+ int (*gmac_clk_enable)(struct plat_gmac_data *plat);
+ void (*gmac_clk_disable)(struct plat_gmac_data *plat);
+};
+
+struct gmac_resources {
+ void __iomem *base_addr;
+ const char *mac_addr;
+ int irq;
+ int phy_rst;
+};
+
+struct gmac_pdata {
+ struct net_device *netdev;
+ struct device *dev;
+
+ struct plat_gmac_data *plat;
+
+ struct gmac_hw_ops hw_ops;
+ struct gmac_desc_ops desc_ops;
+
+ /* Device statistics */
+ struct gmac_stats stats;
+
+ u32 msg_enable;
+
+ /* MAC registers base */
+ void __iomem *mac_regs;
+
+ /* phydev */
+ struct mii_bus *mii;
+ struct phy_device *phydev;
+ int phyaddr;
+ int bus_id;
+
+ /* Hardware features of the device */
+ struct gmac_hw_features hw_feat;
+
+ struct work_struct restart_work;
+
+ /* Rings for Tx/Rx on a DMA channel */
+ struct gmac_channel *channel_head;
+ unsigned int channel_count;
+ unsigned int tx_ring_count;
+ unsigned int rx_ring_count;
+ unsigned int tx_desc_count;
+ unsigned int rx_desc_count;
+ unsigned int tx_q_count;
+ unsigned int rx_q_count;
+
+ /* Tx/Rx common settings */
+ unsigned int pblx8;
+
+ /* Tx settings */
+ unsigned int tx_sf_mode;
+ unsigned int tx_threshold;
+ unsigned int tx_pbl;
+ unsigned int tx_osp_mode;
+
+ /* Rx settings */
+ unsigned int rx_sf_mode;
+ unsigned int rx_threshold;
+ unsigned int rx_pbl;
+ unsigned int rx_sph;
+
+ /* Tx coalescing settings */
+ unsigned int tx_usecs;
+ unsigned int tx_frames;
+
+ /* Rx coalescing settings */
+ unsigned int rx_riwt;
+ unsigned int rx_usecs;
+ unsigned int rx_frames;
+
+ /* Current Rx buffer size */
+ unsigned int rx_buf_size;
+
+ /* Flow control settings */
+ unsigned int tx_pause;
+ unsigned int rx_pause;
+
+ unsigned int max_addr_reg_cnt;
+
+ /* Device interrupt number */
+ int phy_rst;
+ int dev_irq;
+ unsigned int per_channel_irq;
+ int channel_irq[GMAC_MAX_DMA_CHANNELS];
+
+ /* Netdev related settings */
+ unsigned char mac_addr[ETH_ALEN];
+ netdev_features_t netdev_features;
+ struct napi_struct napi;
+
+ /* Filtering support */
+ unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+ int vlan_weight;
+
+ /* Device clocks */
+ unsigned long sysclk_rate;
+
+ /* DMA width */
+ unsigned int dma_width;
+
+ /* HW timestamping */
+ unsigned char hwts_tx_en;
+ unsigned char hwts_rx_en;
+ unsigned long ptpclk_rate, ptptop_rate;
+ unsigned int ptp_divider;
+ struct ptp_clock_info ptp_clock_info;
+ struct ptp_clock *ptp_clock;
+ u64 default_addend;
+ /* protects registers access */
+ spinlock_t ptp_lock;
+
+ int phy_speed;
+ int duplex;
+
+ char drv_name[32];
+ char drv_ver[32];
+};
+
+void gmac_init_desc_ops(struct gmac_desc_ops *desc_ops);
+void gmac_init_hw_ops(struct gmac_hw_ops *hw_ops);
+const struct net_device_ops *gmac_get_netdev_ops(void);
+const struct ethtool_ops *gmac_get_ethtool_ops(void);
+void gmac_dump_tx_desc(struct gmac_pdata *pdata,
+ struct gmac_ring *ring,
+ unsigned int idx,
+ unsigned int count,
+ unsigned int flag);
+void gmac_dump_rx_desc(struct gmac_pdata *pdata,
+ struct gmac_ring *ring,
+ unsigned int idx);
+void gmac_print_pkt(struct net_device *netdev,
+ struct sk_buff *skb, bool tx_rx);
+int gmac_drv_probe(struct device *dev,
+ struct plat_gmac_data *plat,
+ struct gmac_resources *res);
+int gmac_drv_remove(struct device *dev);
+
+int mdio_register(struct net_device *ndev);
+void mdio_unregister(struct net_device *ndev);
+
+/* For debug prints */
+#ifdef GMAC_DEBUG
+#define GMAC_PR(fmt, args...) \
+ pr_alert("[%s,%d]:" fmt, __func__, __LINE__, ## args)
+#else
+#define GMAC_PR(x...) do { } while (0)
+#endif
+
+#endif /* __MTK_GMAC_H__ */
--
1.7.9.5
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