--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2020 Sartura Ltd.
+ *
+ * Author: Robert Marko <robert.marko@sartura.hr>
+ *
+ * Copyright (c) 2021 Toco Technologies FZE <contact@toco.ae>
+ * Copyright (c) 2021 Gabor Juhos <j4g8y7@gmail.com>
+ *
+ * Qualcomm ESS EDMA ethernet driver
+ */
+
+#include <asm/io.h>
+#include <clk.h>
+#include <cpu_func.h>
+#include <dm.h>
+#include <dm/device_compat.h>
+#include <errno.h>
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <log.h>
+#include <miiphy.h>
+#include <net.h>
+#include <reset.h>
+
+#include "essedma.h"
+
+#define EDMA_MAX_PKT_SIZE (PKTSIZE_ALIGN + PKTALIGN)
+
+#define EDMA_RXQ_ID 0
+#define EDMA_TXQ_ID 0
+
+/* descriptor ring */
+struct edma_ring {
+ u16 count; /* number of descriptors in the ring */
+ void *hw_desc; /* descriptor ring virtual address */
+ unsigned int hw_size; /* hw descriptor ring length in bytes */
+ dma_addr_t dma; /* descriptor ring physical address */
+ u16 head; /* next Tx descriptor to fill */
+ u16 tail; /* next Tx descriptor to clean */
+};
+
+struct ess_switch {
+ phys_addr_t base;
+ struct phy_device *phydev[ESS_PORTS_NUM];
+ u32 phy_mask;
+ ofnode ports_node;
+ phy_interface_t port_wrapper_mode;
+ int num_phy;
+};
+
+struct essedma_priv {
+ phys_addr_t base;
+ struct udevice *dev;
+ struct clk ess_clk;
+ struct reset_ctl ess_rst;
+ struct udevice *mdio_dev;
+ struct ess_switch esw;
+ phys_addr_t psgmii_base;
+ struct edma_ring tpd_ring;
+ struct edma_ring rfd_ring;
+};
+
+static void esw_port_loopback_set(struct ess_switch *esw, int port,
+ bool enable)
+{
+ u32 t;
+
+ t = readl(esw->base + ESS_PORT_LOOKUP_CTRL(port));
+ if (enable)
+ t |= ESS_PORT_LOOP_BACK_EN;
+ else
+ t &= ~ESS_PORT_LOOP_BACK_EN;
+ writel(t, esw->base + ESS_PORT_LOOKUP_CTRL(port));
+}
+
+static void esw_port_loopback_set_all(struct ess_switch *esw, bool enable)
+{
+ int i;
+
+ for (i = 1; i < ESS_PORTS_NUM; i++)
+ esw_port_loopback_set(esw, i, enable);
+}
+
+static void ess_reset(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+
+ reset_assert(&priv->ess_rst);
+ mdelay(10);
+
+ reset_deassert(&priv->ess_rst);
+ mdelay(10);
+}
+
+void qca8075_ess_reset(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ struct phy_device *psgmii_phy;
+ int i, val;
+
+ /* Find the PSGMII PHY */
+ psgmii_phy = priv->esw.phydev[priv->esw.num_phy - 1];
+
+ /* Fix phy psgmii RX 20bit */
+ phy_write(psgmii_phy, MDIO_DEVAD_NONE, MII_BMCR, 0x005b);
+
+ /* Reset phy psgmii */
+ phy_write(psgmii_phy, MDIO_DEVAD_NONE, MII_BMCR, 0x001b);
+
+ /* Release reset phy psgmii */
+ phy_write(psgmii_phy, MDIO_DEVAD_NONE, MII_BMCR, 0x005b);
+ for (i = 0; i < 100; i++) {
+ val = phy_read_mmd(psgmii_phy, MDIO_MMD_PMAPMD, 0x28);
+ if (val & 0x1)
+ break;
+ mdelay(1);
+ }
+ if (i >= 100)
+ printf("QCA807x PSGMII PLL_VCO_CALIB Not Ready\n");
+
+ /*
+ * Check qca8075 psgmii calibration done end.
+ * Freeze phy psgmii RX CDR
+ */
+ phy_write(psgmii_phy, MDIO_DEVAD_NONE, 0x1a, 0x2230);
+
+ ess_reset(dev);
+
+ /* Check ipq psgmii calibration done start */
+ for (i = 0; i < 100; i++) {
+ val = readl(priv->psgmii_base + PSGMIIPHY_VCO_CALIBRATION_CTRL_REGISTER_2);
+ if (val & 0x1)
+ break;
+ mdelay(1);
+ }
+ if (i >= 100)
+ printf("PSGMII PLL_VCO_CALIB Not Ready\n");
+
+ /*
+ * Check ipq psgmii calibration done end.
+ * Relesae phy psgmii RX CDR
+ */
+ phy_write(psgmii_phy, MDIO_DEVAD_NONE, 0x1a, 0x3230);
+
+ /* Release phy psgmii RX 20bit */
+ phy_write(psgmii_phy, MDIO_DEVAD_NONE, MII_BMCR, 0x005f);
+}
+
+#define PSGMII_ST_NUM_RETRIES 20
+#define PSGMII_ST_PKT_COUNT (4 * 1024)
+#define PSGMII_ST_PKT_SIZE 1504
+
+/*
+ * Transmitting one byte over a 1000Mbps link requires 8 ns.
+ * Additionally, use + 1 ns for safety to compensate latencies
+ * and such.
+ */
+#define PSGMII_ST_TRAFFIC_TIMEOUT_NS \
+ (PSGMII_ST_PKT_COUNT * PSGMII_ST_PKT_SIZE * (8 + 1))
+
+#define PSGMII_ST_TRAFFIC_TIMEOUT \
+ DIV_ROUND_UP(PSGMII_ST_TRAFFIC_TIMEOUT_NS, 1000000)
+
+static bool psgmii_self_test_repeat = false;
+
+static void psgmii_st_phy_power_down(struct phy_device *phydev)
+{
+ int val;
+
+ val = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
+ val |= QCA807X_POWER_DOWN;
+ phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, val);
+}
+
+static void psgmii_st_phy_prepare(struct phy_device *phydev)
+{
+ int val;
+
+ /* check phydev combo port */
+ val = phy_read(phydev, MDIO_DEVAD_NONE,
+ QCA807X_CHIP_CONFIGURATION);
+ if (val) {
+ /* Select copper page */
+ val |= QCA807X_MEDIA_PAGE_SELECT;
+ phy_write(phydev, MDIO_DEVAD_NONE,
+ QCA807X_CHIP_CONFIGURATION, val);
+ }
+
+ /* Force no link by power down */
+ psgmii_st_phy_power_down(phydev);
+
+ /* Packet number (Non documented) */
+ phy_write_mmd(phydev, MDIO_MMD_AN, 0x8021, PSGMII_ST_PKT_COUNT);
+ phy_write_mmd(phydev, MDIO_MMD_AN, 0x8062, PSGMII_ST_PKT_SIZE);
+
+ /* Fix MDI status */
+ val = phy_read(phydev, MDIO_DEVAD_NONE, QCA807X_FUNCTION_CONTROL);
+ val &= ~QCA807X_MDI_CROSSOVER_MODE_MASK;
+ val |= FIELD_PREP(QCA807X_MDI_CROSSOVER_MODE_MASK,
+ QCA807X_MDI_CROSSOVER_MODE_MANUAL_MDI);
+ val &= ~QCA807X_POLARITY_REVERSAL;
+ phy_write(phydev, MDIO_DEVAD_NONE, QCA807X_FUNCTION_CONTROL, val);
+}
+
+static void psgmii_st_phy_recover(struct phy_device *phydev)
+{
+ int val;
+
+ /* Packet number (Non documented) */
+ phy_write_mmd(phydev, MDIO_MMD_AN, 0x8021, 0x0);
+
+ /* Disable CRC checker and packet counter */
+ val = phy_read_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_CRC_PACKET_COUNTER);
+ val &= ~QCA807X_MMD7_PACKET_COUNTER_SELFCLR;
+ val &= ~QCA807X_MMD7_CRC_PACKET_COUNTER_EN;
+ phy_write_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_CRC_PACKET_COUNTER, val);
+
+ /* Disable traffic (Undocumented) */
+ phy_write_mmd(phydev, MDIO_MMD_AN, 0x8020, 0x0);
+}
+
+static void psgmii_st_phy_start_traffic(struct phy_device *phydev)
+{
+ int val;
+
+ /* Enable CRC checker and packet counter */
+ val = phy_read_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_CRC_PACKET_COUNTER);
+ val |= QCA807X_MMD7_CRC_PACKET_COUNTER_EN;
+ phy_write_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_CRC_PACKET_COUNTER, val);
+
+ /* Start traffic (Undocumented) */
+ phy_write_mmd(phydev, MDIO_MMD_AN, 0x8020, 0xa000);
+}
+
+static bool psgmii_st_phy_check_counters(struct phy_device *phydev)
+{
+ u32 tx_ok;
+
+ /*
+ * The number of test packets is limited to 65535 so
+ * only read the lower 16 bits of the counter.
+ */
+ tx_ok = phy_read_mmd(phydev, MDIO_MMD_AN,
+ QCA807X_MMD7_VALID_EGRESS_COUNTER_2);
+
+ return (tx_ok == PSGMII_ST_PKT_COUNT);
+}
+
+static void psgmii_st_phy_reset_loopback(struct phy_device *phydev)
+{
+ /* reset the PHY */
+ phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, 0x9000);
+
+ /* enable loopback mode */
+ phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, 0x4140);
+}
+
+static inline bool psgmii_st_phy_link_is_up(struct phy_device *phydev)
+{
+ int val;
+
+ val = phy_read(phydev, MDIO_DEVAD_NONE, QCA807X_PHY_SPECIFIC);
+ return !!(val & QCA807X_PHY_SPECIFIC_LINK);
+}
+
+static bool psgmii_st_phy_wait(struct ess_switch *esw, u32 mask,
+ int retries, int delay,
+ bool (*check)(struct phy_device*))
+{
+ int i;
+
+ for (i = 0; i < retries; i++) {
+ int phy;
+
+ for (phy = 0; phy < esw->num_phy - 1; phy++) {
+ u32 phybit = BIT(phy);
+
+ if (!(mask & phybit))
+ continue;
+
+ if (check(esw->phydev[phy]))
+ mask &= ~phybit;
+ }
+
+ if (!mask)
+ break;
+
+ mdelay(delay);
+ }
+
+ return (!mask);
+}
+
+static bool psgmii_st_phy_wait_link(struct ess_switch *esw, u32 mask)
+{
+ return psgmii_st_phy_wait(esw, mask, 100, 10,
+ psgmii_st_phy_link_is_up);
+}
+
+static bool psgmii_st_phy_wait_tx_complete(struct ess_switch *esw, u32 mask)
+{
+ return psgmii_st_phy_wait(esw, mask, PSGMII_ST_TRAFFIC_TIMEOUT, 1,
+ psgmii_st_phy_check_counters);
+}
+
+static bool psgmii_st_run_test_serial(struct ess_switch *esw)
+{
+ bool result = true;
+ int i;
+
+ for (i = 0; i < esw->num_phy - 1; i++) {
+ struct phy_device *phydev = esw->phydev[i];
+
+ psgmii_st_phy_reset_loopback(phydev);
+
+ psgmii_st_phy_wait_link(esw, BIT(i));
+
+ psgmii_st_phy_start_traffic(phydev);
+
+ /* wait for the traffic to complete */
+ result &= psgmii_st_phy_wait_tx_complete(esw, BIT(i));
+
+ /* Power down */
+ psgmii_st_phy_power_down(phydev);
+
+ if (!result)
+ break;
+ }
+
+ return result;
+}
+
+static bool psgmii_st_run_test_parallel(struct ess_switch *esw)
+{
+ bool result;
+ int i;
+
+ /* enable loopback mode on all PHYs */
+ for (i = 0; i < esw->num_phy - 1; i++)
+ psgmii_st_phy_reset_loopback(esw->phydev[i]);
+
+ psgmii_st_phy_wait_link(esw, esw->phy_mask);
+
+ /* start traffic on all PHYs parallely */
+ for (i = 0; i < esw->num_phy - 1; i++)
+ psgmii_st_phy_start_traffic(esw->phydev[i]);
+
+ /* wait for the traffic to complete on all PHYs */
+ result = psgmii_st_phy_wait_tx_complete(esw, esw->phy_mask);
+
+ /* Power down all PHYs */
+ for (i = 0; i < esw->num_phy - 1; i++)
+ psgmii_st_phy_power_down(esw->phydev[i]);
+
+ return result;
+}
+
+struct psgmii_st_stats {
+ int succeed;
+ int failed;
+ int failed_max;
+ int failed_cont;
+};
+
+static void psgmii_st_update_stats(struct psgmii_st_stats *stats,
+ bool success)
+{
+ if (success) {
+ stats->succeed++;
+ stats->failed_cont = 0;
+ return;
+ }
+
+ stats->failed++;
+ stats->failed_cont++;
+ if (stats->failed_max < stats->failed_cont)
+ stats->failed_max = stats->failed_cont;
+}
+
+static void psgmii_self_test(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ struct ess_switch *esw = &priv->esw;
+ struct psgmii_st_stats stats;
+ bool result = false;
+ unsigned long tm;
+ int i;
+
+ memset(&stats, 0, sizeof(stats));
+
+ tm = get_timer(0);
+
+ for (i = 0; i < esw->num_phy - 1; i++)
+ psgmii_st_phy_prepare(esw->phydev[i]);
+
+ for (i = 0; i < PSGMII_ST_NUM_RETRIES; i++) {
+ qca8075_ess_reset(dev);
+
+ /* enable loopback mode on the switch's ports */
+ esw_port_loopback_set_all(esw, true);
+
+ /* run test on each PHYs individually after each other */
+ result = psgmii_st_run_test_serial(esw);
+
+ if (result) {
+ /* run test on each PHYs parallely */
+ result = psgmii_st_run_test_parallel(esw);
+ }
+
+ psgmii_st_update_stats(&stats, result);
+
+ if (psgmii_self_test_repeat)
+ continue;
+
+ if (result)
+ break;
+ }
+
+ for (i = 0; i < esw->num_phy - 1; i++) {
+ /* Configuration recover */
+ psgmii_st_phy_recover(esw->phydev[i]);
+
+ /* Disable loopback */
+ phy_write(esw->phydev[i], MDIO_DEVAD_NONE,
+ QCA807X_FUNCTION_CONTROL, 0x6860);
+ phy_write(esw->phydev[i], MDIO_DEVAD_NONE, MII_BMCR, 0x9040);
+ }
+
+ /* disable loopback mode on the switch's ports */
+ esw_port_loopback_set_all(esw, false);
+
+ tm = get_timer(tm);
+ dev_dbg(priv->dev, "\nPSGMII self-test: succeed %d, failed %d (max %d), duration %lu.%03lu secs\n",
+ stats.succeed, stats.failed, stats.failed_max,
+ tm / 1000, tm % 1000);
+}
+
+static int ess_switch_disable_lookup(struct ess_switch *esw)
+{
+ int val;
+ int i;
+
+ /* Disable port lookup for all ports*/
+ for (i = 0; i < ESS_PORTS_NUM; i++) {
+ int ess_port_vid;
+
+ val = readl(esw->base + ESS_PORT_LOOKUP_CTRL(i));
+ val &= ~ESS_PORT_VID_MEM_MASK;
+
+ switch (i) {
+ case 0:
+ fallthrough;
+ case 5:
+ /* CPU,WAN port -> nothing */
+ ess_port_vid = 0;
+ break;
+ case 1 ... 4:
+ /* LAN ports -> all other LAN ports */
+ ess_port_vid = GENMASK(4, 1);
+ ess_port_vid &= ~BIT(i);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ val |= FIELD_PREP(ESS_PORT_VID_MEM_MASK, ess_port_vid);
+
+ writel(val, esw->base + ESS_PORT_LOOKUP_CTRL(i));
+ }
+
+ /* Set magic value for the global forwarding register 1 */
+ writel(0x3e3e3e, esw->base + ESS_GLOBAL_FW_CTRL1);
+
+ return 0;
+}
+
+static int ess_switch_enable_lookup(struct ess_switch *esw)
+{
+ int val;
+ int i;
+
+ /* Enable port lookup for all ports*/
+ for (i = 0; i < ESS_PORTS_NUM; i++) {
+ int ess_port_vid;
+
+ val = readl(esw->base + ESS_PORT_LOOKUP_CTRL(i));
+ val &= ~ESS_PORT_VID_MEM_MASK;
+
+ switch (i) {
+ case 0:
+ /* CPU port -> all other ports */
+ ess_port_vid = GENMASK(5, 1);
+ break;
+ case 1 ... 4:
+ /* LAN ports -> CPU and all other LAN ports */
+ ess_port_vid = GENMASK(4, 0);
+ ess_port_vid &= ~BIT(i);
+ break;
+ case 5:
+ /* WAN port -> CPU port only */
+ ess_port_vid = BIT(0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ val |= FIELD_PREP(ESS_PORT_VID_MEM_MASK, ess_port_vid);
+
+ writel(val, esw->base + ESS_PORT_LOOKUP_CTRL(i));
+ }
+
+ /* Set magic value for the global forwarding register 1 */
+ writel(0x3f3f3f, esw->base + ESS_GLOBAL_FW_CTRL1);
+
+ return 0;
+}
+
+static void ess_switch_init(struct ess_switch *esw)
+{
+ int val = 0;
+ int i;
+
+ /* Set magic value for the global forwarding register 1 */
+ writel(0x3e3e3e, esw->base + ESS_GLOBAL_FW_CTRL1);
+
+ /* Set 1000M speed, full duplex and RX/TX flow control for the CPU port*/
+ val &= ~ESS_PORT_SPEED_MASK;
+ val |= FIELD_PREP(ESS_PORT_SPEED_MASK, ESS_PORT_SPEED_1000);
+ val |= ESS_PORT_DUPLEX_MODE;
+ val |= ESS_PORT_TX_FLOW_EN;
+ val |= ESS_PORT_RX_FLOW_EN;
+
+ writel(val, esw->base + ESS_PORT0_STATUS);
+
+ /* Disable port lookup for all ports*/
+ for (i = 0; i < ESS_PORTS_NUM; i++) {
+ val = readl(esw->base + ESS_PORT_LOOKUP_CTRL(i));
+ val &= ~ESS_PORT_VID_MEM_MASK;
+
+ writel(val, esw->base + ESS_PORT_LOOKUP_CTRL(i));
+ }
+
+ /* Set HOL settings for all ports*/
+ for (i = 0; i < ESS_PORTS_NUM; i++) {
+ val = 0;
+
+ val |= FIELD_PREP(EG_PORT_QUEUE_NUM_MASK, 30);
+ if (i == 0 || i == 5) {
+ val |= FIELD_PREP(EG_PRI5_QUEUE_NUM_MASK, 4);
+ val |= FIELD_PREP(EG_PRI4_QUEUE_NUM_MASK, 4);
+ }
+ val |= FIELD_PREP(EG_PRI3_QUEUE_NUM_MASK, 4);
+ val |= FIELD_PREP(EG_PRI2_QUEUE_NUM_MASK, 4);
+ val |= FIELD_PREP(EG_PRI1_QUEUE_NUM_MASK, 4);
+ val |= FIELD_PREP(EG_PRI0_QUEUE_NUM_MASK, 4);
+
+ writel(val, esw->base + ESS_PORT_HOL_CTRL0(i));
+
+ val = readl(esw->base + ESS_PORT_HOL_CTRL1(i));
+ val &= ~ESS_ING_BUF_NUM_0_MASK;
+ val |= FIELD_PREP(ESS_ING_BUF_NUM_0_MASK, 6);
+
+ writel(val, esw->base + ESS_PORT_HOL_CTRL1(i));
+ }
+
+ /* Give switch some time */
+ mdelay(1);
+
+ /* Enable RX and TX MAC-s */
+ val = readl(esw->base + ESS_PORT0_STATUS);
+ val |= ESS_PORT_TXMAC_EN;
+ val |= ESS_PORT_RXMAC_EN;
+
+ writel(val, esw->base + ESS_PORT0_STATUS);
+
+ /* Set magic value for the global forwarding register 1 */
+ writel(0x7f7f7f, esw->base + ESS_GLOBAL_FW_CTRL1);
+}
+
+static int essedma_of_phy(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ struct ess_switch *esw = &priv->esw;
+ int num_phy = 0, ret = 0;
+ ofnode node;
+ int i;
+
+ ofnode_for_each_subnode(node, esw->ports_node) {
+ struct ofnode_phandle_args phandle_args;
+ struct phy_device *phydev;
+ u32 phy_addr;
+
+ if (ofnode_is_enabled(node)) {
+ if (ofnode_parse_phandle_with_args(node, "phy-handle", NULL, 0, 0,
+ &phandle_args)) {
+ dev_dbg(priv->dev, "Failed to find phy-handle\n");
+ return -ENODEV;
+ }
+
+ ret = ofnode_read_u32(phandle_args.node, "reg", &phy_addr);
+ if (ret) {
+ dev_dbg(priv->dev, "Missing reg property in PHY node %s\n",
+ ofnode_get_name(phandle_args.node));
+ return ret;
+ }
+
+ phydev = dm_mdio_phy_connect(priv->mdio_dev, phy_addr,
+ dev, priv->esw.port_wrapper_mode);
+ if (!phydev) {
+ dev_dbg(priv->dev, "Failed to find phy on addr %d\n", phy_addr);
+ return -ENODEV;
+ }
+
+ phydev->node = phandle_args.node;
+ ret = phy_config(phydev);
+
+ esw->phydev[num_phy] = phydev;
+
+ num_phy++;
+ }
+ }
+
+ esw->num_phy = num_phy;
+
+ for (i = 0; i < esw->num_phy - 1; i++)
+ esw->phy_mask |= BIT(i);
+
+ return ret;
+}
+
+static int essedma_of_switch(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ int port_wrapper_mode = -1;
+
+ priv->esw.ports_node = ofnode_find_subnode(dev_ofnode(dev), "ports");
+ if (!ofnode_valid(priv->esw.ports_node)) {
+ printf("Failed to find ports node\n");
+ return -EINVAL;
+ }
+
+ port_wrapper_mode = ofnode_read_phy_mode(priv->esw.ports_node);
+ if (port_wrapper_mode == -1)
+ return -EINVAL;
+
+ priv->esw.port_wrapper_mode = port_wrapper_mode;
+
+ return essedma_of_phy(dev);
+}
+
+static void ipq40xx_edma_start_rx_tx(struct essedma_priv *priv)
+{
+ volatile u32 data;
+
+ /* enable RX queues */
+ data = readl(priv->base + EDMA_REG_RXQ_CTRL);
+ data |= EDMA_RXQ_CTRL_EN;
+ writel(data, priv->base + EDMA_REG_RXQ_CTRL);
+
+ /* enable TX queues */
+ data = readl(priv->base + EDMA_REG_TXQ_CTRL);
+ data |= EDMA_TXQ_CTRL_TXQ_EN;
+ writel(data, priv->base + EDMA_REG_TXQ_CTRL);
+}
+
+/*
+ * ipq40xx_edma_init_desc()
+ * Update descriptor ring size,
+ * Update buffer and producer/consumer index
+ */
+static void ipq40xx_edma_init_desc(struct essedma_priv *priv)
+{
+ struct edma_ring *rfd_ring;
+ struct edma_ring *etdr;
+ volatile u32 data = 0;
+ u16 hw_cons_idx = 0;
+
+ /* Set the base address of every TPD ring. */
+ etdr = &priv->tpd_ring;
+
+ /* Update TX descriptor ring base address. */
+ writel((u32)(etdr->dma & 0xffffffff),
+ priv->base + EDMA_REG_TPD_BASE_ADDR_Q(EDMA_TXQ_ID));
+ data = readl(priv->base + EDMA_REG_TPD_IDX_Q(EDMA_TXQ_ID));
+
+ /* Calculate hardware consumer index for Tx. */
+ hw_cons_idx = FIELD_GET(EDMA_TPD_CONS_IDX_MASK, data);
+ etdr->head = hw_cons_idx;
+ etdr->tail = hw_cons_idx;
+ data &= ~EDMA_TPD_PROD_IDX_MASK;
+ data |= hw_cons_idx;
+
+ /* Update producer index for Tx. */
+ writel(data, priv->base + EDMA_REG_TPD_IDX_Q(EDMA_TXQ_ID));
+
+ /* Update SW consumer index register for Tx. */
+ writel(hw_cons_idx,
+ priv->base + EDMA_REG_TX_SW_CONS_IDX_Q(EDMA_TXQ_ID));
+
+ /* Set TPD ring size. */
+ writel((u32)(etdr->count & EDMA_TPD_RING_SIZE_MASK),
+ priv->base + EDMA_REG_TPD_RING_SIZE);
+
+ /* Configure Rx ring. */
+ rfd_ring = &priv->rfd_ring;
+
+ /* Update Receive Free descriptor ring base address. */
+ writel((u32)(rfd_ring->dma & 0xffffffff),
+ priv->base + EDMA_REG_RFD_BASE_ADDR_Q(EDMA_RXQ_ID));
+ data = readl(priv->base + EDMA_REG_RFD_BASE_ADDR_Q(EDMA_RXQ_ID));
+
+ /* Update RFD ring size and RX buffer size. */
+ data = (rfd_ring->count & EDMA_RFD_RING_SIZE_MASK)
+ << EDMA_RFD_RING_SIZE_SHIFT;
+ data |= (EDMA_MAX_PKT_SIZE & EDMA_RX_BUF_SIZE_MASK)
+ << EDMA_RX_BUF_SIZE_SHIFT;
+ writel(data, priv->base + EDMA_REG_RX_DESC0);
+
+ /* Disable TX FIFO low watermark and high watermark */
+ writel(0, priv->base + EDMA_REG_TXF_WATER_MARK);
+
+ /* Load all of base address above */
+ data = readl(priv->base + EDMA_REG_TX_SRAM_PART);
+ data |= 1 << EDMA_LOAD_PTR_SHIFT;
+ writel(data, priv->base + EDMA_REG_TX_SRAM_PART);
+}
+
+static void ipq40xx_edma_init_rfd_ring(struct essedma_priv *priv)
+{
+ struct edma_ring *erdr = &priv->rfd_ring;
+ struct edma_rfd *rfds = erdr->hw_desc;
+ int i;
+
+ for (i = 0; i < erdr->count; i++)
+ rfds[i].buffer_addr = virt_to_phys(net_rx_packets[i]);
+
+ flush_dcache_range(erdr->dma, erdr->dma + erdr->hw_size);
+
+ /* setup producer index */
+ erdr->head = erdr->count - 1;
+ writel(erdr->head, priv->base + EDMA_REG_RFD_IDX_Q(EDMA_RXQ_ID));
+}
+
+static void ipq40xx_edma_configure(struct essedma_priv *priv)
+{
+ u32 tmp;
+ int i;
+
+ /* Set RSS type */
+ writel(IPQ40XX_EDMA_RSS_TYPE_NONE, priv->base + EDMA_REG_RSS_TYPE);
+
+ /* Configure RSS indirection table.
+ * 128 hash will be configured in the following
+ * pattern: hash{0,1,2,3} = {Q0,Q2,Q4,Q6} respectively
+ * and so on
+ */
+ for (i = 0; i < EDMA_NUM_IDT; i++)
+ writel(EDMA_RSS_IDT_VALUE, priv->base + EDMA_REG_RSS_IDT(i));
+
+ /* Set RFD burst number */
+ tmp = (EDMA_RFD_BURST << EDMA_RXQ_RFD_BURST_NUM_SHIFT);
+
+ /* Set RFD prefetch threshold */
+ tmp |= (EDMA_RFD_THR << EDMA_RXQ_RFD_PF_THRESH_SHIFT);
+
+ /* Set RFD in host ring low threshold to generte interrupt */
+ tmp |= (EDMA_RFD_LTHR << EDMA_RXQ_RFD_LOW_THRESH_SHIFT);
+ writel(tmp, priv->base + EDMA_REG_RX_DESC1);
+
+ /* configure reception control data. */
+
+ /* Set Rx FIFO threshold to start to DMA data to host */
+ tmp = EDMA_FIFO_THRESH_128_BYTE;
+
+ /* Set RX remove vlan bit */
+ tmp |= EDMA_RXQ_CTRL_RMV_VLAN;
+ writel(tmp, priv->base + EDMA_REG_RXQ_CTRL);
+
+ /* Configure transmission control data */
+ tmp = (EDMA_TPD_BURST << EDMA_TXQ_NUM_TPD_BURST_SHIFT);
+ tmp |= EDMA_TXQ_CTRL_TPD_BURST_EN;
+ tmp |= (EDMA_TXF_BURST << EDMA_TXQ_TXF_BURST_NUM_SHIFT);
+ writel(tmp, priv->base + EDMA_REG_TXQ_CTRL);
+}
+
+static void ipq40xx_edma_stop_rx_tx(struct essedma_priv *priv)
+{
+ volatile u32 data;
+
+ data = readl(priv->base + EDMA_REG_RXQ_CTRL);
+ data &= ~EDMA_RXQ_CTRL_EN;
+ writel(data, priv->base + EDMA_REG_RXQ_CTRL);
+ data = readl(priv->base + EDMA_REG_TXQ_CTRL);
+ data &= ~EDMA_TXQ_CTRL_TXQ_EN;
+ writel(data, priv->base + EDMA_REG_TXQ_CTRL);
+}
+
+static int ipq40xx_eth_recv(struct udevice *dev, int flags, uchar **packetp)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ struct edma_ring *erdr = &priv->rfd_ring;
+ struct edma_rrd *rrd;
+ u32 hw_tail;
+ u8 *rx_pkt;
+
+ hw_tail = readl(priv->base + EDMA_REG_RFD_IDX_Q(EDMA_RXQ_ID));
+ hw_tail = FIELD_GET(EDMA_RFD_CONS_IDX_MASK, hw_tail);
+
+ if (hw_tail == erdr->tail)
+ return -EAGAIN;
+
+ rx_pkt = net_rx_packets[erdr->tail];
+ invalidate_dcache_range((unsigned long)rx_pkt,
+ (unsigned long)(rx_pkt + EDMA_MAX_PKT_SIZE));
+
+ rrd = (struct edma_rrd *)rx_pkt;
+
+ /* Check if RRD is valid */
+ if (!(rrd->rrd7 & EDMA_RRD7_DESC_VALID))
+ return 0;
+
+ *packetp = rx_pkt + EDMA_RRD_SIZE;
+
+ /* get the packet size */
+ return rrd->rrd6;
+}
+
+static int ipq40xx_eth_free_pkt(struct udevice *dev, uchar *packet,
+ int length)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ struct edma_ring *erdr;
+
+ erdr = &priv->rfd_ring;
+
+ /* Update the producer index */
+ writel(erdr->head, priv->base + EDMA_REG_RFD_IDX_Q(EDMA_RXQ_ID));
+
+ erdr->head++;
+ if (erdr->head == erdr->count)
+ erdr->head = 0;
+
+ /* Update the consumer index */
+ erdr->tail++;
+ if (erdr->tail == erdr->count)
+ erdr->tail = 0;
+
+ writel(erdr->tail,
+ priv->base + EDMA_REG_RX_SW_CONS_IDX_Q(EDMA_RXQ_ID));
+
+ return 0;
+}
+
+static int ipq40xx_eth_start(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+
+ ipq40xx_edma_init_rfd_ring(priv);
+
+ ipq40xx_edma_start_rx_tx(priv);
+ ess_switch_enable_lookup(&priv->esw);
+
+ return 0;
+}
+
+/*
+ * One TPD would be enough for sending a packet, however because the
+ * minimal cache line size is larger than the size of a TPD it is not
+ * possible to flush only one at once. To overcome this limitation
+ * multiple TPDs are used for sending a single packet.
+ */
+#define EDMA_TPDS_PER_PACKET 4
+#define EDMA_TPD_MIN_BYTES 4
+#define EDMA_MIN_PKT_SIZE (EDMA_TPDS_PER_PACKET * EDMA_TPD_MIN_BYTES)
+
+#define EDMA_TX_COMPLETE_TIMEOUT 1000000
+
+static int ipq40xx_eth_send(struct udevice *dev, void *packet, int length)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ struct edma_tpd *first_tpd;
+ struct edma_tpd *tpds;
+ int i;
+
+ if (length < EDMA_MIN_PKT_SIZE)
+ return 0;
+
+ flush_dcache_range((unsigned long)(packet),
+ (unsigned long)(packet) +
+ roundup(length, ARCH_DMA_MINALIGN));
+
+ tpds = priv->tpd_ring.hw_desc;
+ for (i = 0; i < EDMA_TPDS_PER_PACKET; i++) {
+ struct edma_tpd *tpd;
+ void *frag;
+
+ frag = packet + (i * EDMA_TPD_MIN_BYTES);
+
+ /* get the next TPD */
+ tpd = &tpds[priv->tpd_ring.head];
+ if (i == 0)
+ first_tpd = tpd;
+
+ /* update the software index */
+ priv->tpd_ring.head++;
+ if (priv->tpd_ring.head == priv->tpd_ring.count)
+ priv->tpd_ring.head = 0;
+
+ tpd->svlan_tag = 0;
+ tpd->addr = virt_to_phys(frag);
+ tpd->word3 = EDMA_PORT_ENABLE_ALL << EDMA_TPD_PORT_BITMAP_SHIFT;
+
+ if (i < (EDMA_TPDS_PER_PACKET - 1)) {
+ tpd->len = EDMA_TPD_MIN_BYTES;
+ tpd->word1 = 0;
+ } else {
+ tpd->len = length;
+ tpd->word1 = 1 << EDMA_TPD_EOP_SHIFT;
+ }
+
+ length -= EDMA_TPD_MIN_BYTES;
+ }
+
+ /* make sure that memory writing completes */
+ wmb();
+
+ flush_dcache_range((unsigned long)first_tpd,
+ (unsigned long)first_tpd +
+ EDMA_TPDS_PER_PACKET * sizeof(struct edma_tpd));
+
+ /* update the TX producer index */
+ writel(priv->tpd_ring.head,
+ priv->base + EDMA_REG_TPD_IDX_Q(EDMA_TXQ_ID));
+
+ /* Wait for TX DMA completion */
+ for (i = 0; i < EDMA_TX_COMPLETE_TIMEOUT; i++) {
+ u32 r, prod, cons;
+
+ r = readl(priv->base + EDMA_REG_TPD_IDX_Q(EDMA_TXQ_ID));
+ prod = FIELD_GET(EDMA_TPD_PROD_IDX_MASK, r);
+ cons = FIELD_GET(EDMA_TPD_CONS_IDX_MASK, r);
+
+ if (cons == prod)
+ break;
+
+ udelay(1);
+ }
+
+ if (i == EDMA_TX_COMPLETE_TIMEOUT)
+ printf("TX timeout: packet not sent!\n");
+
+ /* update the software TX consumer index register */
+ writel(priv->tpd_ring.head,
+ priv->base + EDMA_REG_TX_SW_CONS_IDX_Q(EDMA_TXQ_ID));
+
+ return 0;
+}
+
+static void ipq40xx_eth_stop(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+
+ ess_switch_disable_lookup(&priv->esw);
+ ipq40xx_edma_stop_rx_tx(priv);
+}
+
+static void ipq40xx_edma_free_ring(struct edma_ring *ring)
+{
+ free(ring->hw_desc);
+}
+
+/*
+ * Free Tx and Rx rings
+ */
+static void ipq40xx_edma_free_rings(struct essedma_priv *priv)
+{
+ ipq40xx_edma_free_ring(&priv->tpd_ring);
+ ipq40xx_edma_free_ring(&priv->rfd_ring);
+}
+
+/*
+ * ipq40xx_edma_alloc_ring()
+ * allocate edma ring descriptor.
+ */
+static int ipq40xx_edma_alloc_ring(struct edma_ring *erd,
+ unsigned int desc_size)
+{
+ erd->head = 0;
+ erd->tail = 0;
+
+ /* Alloc HW descriptors */
+ erd->hw_size = roundup(desc_size * erd->count,
+ ARCH_DMA_MINALIGN);
+
+ erd->hw_desc = memalign(CONFIG_SYS_CACHELINE_SIZE, erd->hw_size);
+ if (!erd->hw_desc)
+ return -ENOMEM;
+
+ memset(erd->hw_desc, 0, erd->hw_size);
+ erd->dma = virt_to_phys(erd->hw_desc);
+
+ return 0;
+
+}
+
+/*
+ * ipq40xx_allocate_tx_rx_rings()
+ */
+static int ipq40xx_edma_alloc_tx_rx_rings(struct essedma_priv *priv)
+{
+ int ret;
+
+ ret = ipq40xx_edma_alloc_ring(&priv->tpd_ring,
+ sizeof(struct edma_tpd));
+ if (ret)
+ return ret;
+
+ ret = ipq40xx_edma_alloc_ring(&priv->rfd_ring,
+ sizeof(struct edma_rfd));
+ if (ret)
+ goto err_free_tpd;
+
+ return 0;
+
+err_free_tpd:
+ ipq40xx_edma_free_ring(&priv->tpd_ring);
+ return ret;
+}
+
+static int ipq40xx_eth_write_hwaddr(struct udevice *dev)
+{
+ struct eth_pdata *pdata = dev_get_plat(dev);
+ struct essedma_priv *priv = dev_get_priv(dev);
+ unsigned char *mac = pdata->enetaddr;
+ u32 mac_lo, mac_hi;
+
+ mac_hi = ((u32)mac[0]) << 8 | (u32)mac[1];
+ mac_lo = ((u32)mac[2]) << 24 | ((u32)mac[3]) << 16 |
+ ((u32)mac[4]) << 8 | (u32)mac[5];
+
+ writel(mac_lo, priv->base + REG_MAC_CTRL0);
+ writel(mac_hi, priv->base + REG_MAC_CTRL1);
+
+ return 0;
+}
+
+static int edma_init(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ priv->tpd_ring.count = IPQ40XX_EDMA_TX_RING_SIZE;
+ priv->rfd_ring.count = PKTBUFSRX;
+
+ ret = ipq40xx_edma_alloc_tx_rx_rings(priv);
+ if (ret)
+ return -ENOMEM;
+
+ ipq40xx_edma_stop_rx_tx(priv);
+
+ /* Configure EDMA. */
+ ipq40xx_edma_configure(priv);
+
+ /* Configure descriptor Ring */
+ ipq40xx_edma_init_desc(priv);
+
+ ess_switch_disable_lookup(&priv->esw);
+
+ return 0;
+}
+
+static int essedma_probe(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ priv->dev = dev;
+
+ priv->base = dev_read_addr_name(dev, "edma");
+ if (priv->base == FDT_ADDR_T_NONE)
+ return -EINVAL;
+
+ priv->psgmii_base = dev_read_addr_name(dev, "psgmii_phy");
+ if (priv->psgmii_base == FDT_ADDR_T_NONE)
+ return -EINVAL;
+
+ priv->esw.base = dev_read_addr_name(dev, "base");
+ if (priv->esw.base == FDT_ADDR_T_NONE)
+ return -EINVAL;
+
+ ret = clk_get_by_name(dev, "ess", &priv->ess_clk);
+ if (ret)
+ return ret;
+
+ ret = reset_get_by_name(dev, "ess", &priv->ess_rst);
+ if (ret)
+ return ret;
+
+ ret = clk_enable(&priv->ess_clk);
+ if (ret)
+ return ret;
+
+ ess_reset(dev);
+
+ ret = uclass_get_device_by_driver(UCLASS_MDIO,
+ DM_DRIVER_GET(ipq4019_mdio),
+ &priv->mdio_dev);
+ if (ret) {
+ dev_dbg(dev, "Cant find IPQ4019 MDIO: %d\n", ret);
+ goto err;
+ }
+
+ /* OF switch and PHY parsing and configuration */
+ ret = essedma_of_switch(dev);
+ if (ret)
+ goto err;
+
+ switch (priv->esw.port_wrapper_mode) {
+ case PHY_INTERFACE_MODE_PSGMII:
+ writel(PSGMIIPHY_PLL_VCO_VAL,
+ priv->psgmii_base + PSGMIIPHY_PLL_VCO_RELATED_CTRL);
+ writel(PSGMIIPHY_VCO_VAL, priv->psgmii_base +
+ PSGMIIPHY_VCO_CALIBRATION_CTRL_REGISTER_1);
+ /* wait for 10ms */
+ mdelay(10);
+ writel(PSGMIIPHY_VCO_RST_VAL, priv->psgmii_base +
+ PSGMIIPHY_VCO_CALIBRATION_CTRL_REGISTER_1);
+ break;
+ case PHY_INTERFACE_MODE_RGMII:
+ writel(0x1, RGMII_TCSR_ESS_CFG);
+ writel(0x400, priv->esw.base + ESS_RGMII_CTRL);
+ break;
+ default:
+ printf("Unknown MII interface\n");
+ }
+
+ if (priv->esw.port_wrapper_mode == PHY_INTERFACE_MODE_PSGMII)
+ psgmii_self_test(dev);
+
+ ess_switch_init(&priv->esw);
+
+ ret = edma_init(dev);
+ if (ret)
+ goto err;
+
+ return 0;
+
+err:
+ reset_assert(&priv->ess_rst);
+ clk_disable(&priv->ess_clk);
+ return ret;
+}
+
+static int essedma_remove(struct udevice *dev)
+{
+ struct essedma_priv *priv = dev_get_priv(dev);
+
+ ipq40xx_edma_free_rings(priv);
+
+ clk_disable(&priv->ess_clk);
+ reset_assert(&priv->ess_rst);
+
+ return 0;
+}
+
+static const struct eth_ops essedma_eth_ops = {
+ .start = ipq40xx_eth_start,
+ .send = ipq40xx_eth_send,
+ .recv = ipq40xx_eth_recv,
+ .free_pkt = ipq40xx_eth_free_pkt,
+ .stop = ipq40xx_eth_stop,
+ .write_hwaddr = ipq40xx_eth_write_hwaddr,
+};
+
+static const struct udevice_id essedma_ids[] = {
+ { .compatible = "qcom,ipq4019-ess", },
+ { }
+};
+
+U_BOOT_DRIVER(essedma) = {
+ .name = "essedma",
+ .id = UCLASS_ETH,
+ .of_match = essedma_ids,
+ .probe = essedma_probe,
+ .remove = essedma_remove,
+ .priv_auto = sizeof(struct essedma_priv),
+ .plat_auto = sizeof(struct eth_pdata),
+ .ops = &essedma_eth_ops,
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2020 Sartura Ltd.
+ *
+ * Author: Robert Marko <robert.marko@sartura.hr>
+ *
+ * Copyright (c) 2021 Toco Technologies FZE <contact@toco.ae>
+ * Copyright (c) 2021 Gabor Juhos <j4g8y7@gmail.com>
+ *
+ * Qualcomm ESS EDMA ethernet driver
+ */
+
+#ifndef _ESSEDMA_ETH_H
+#define _ESSEDMA_ETH_H
+
+#define ESS_PORTS_NUM 6
+
+#define ESS_RGMII_CTRL 0x4
+
+#define ESS_GLOBAL_FW_CTRL1 0x624
+
+#define ESS_PORT0_STATUS 0x7c
+#define ESS_PORT_SPEED_MASK GENMASK(1, 0)
+#define ESS_PORT_SPEED_1000 3
+#define ESS_PORT_SPEED_100 2
+#define ESS_PORT_SPEED_10 1
+#define ESS_PORT_TXMAC_EN BIT(2)
+#define ESS_PORT_RXMAC_EN BIT(3)
+#define ESS_PORT_TX_FLOW_EN BIT(4)
+#define ESS_PORT_RX_FLOW_EN BIT(5)
+#define ESS_PORT_DUPLEX_MODE BIT(6)
+
+#define ESS_PORT_LOOKUP_CTRL(_p) (0x660 + (_p) * 12)
+#define ESS_PORT_LOOP_BACK_EN BIT(21)
+#define ESS_PORT_VID_MEM_MASK GENMASK(6, 0)
+
+#define ESS_PORT_HOL_CTRL0(_p) (0x970 + (_p) * 8)
+#define EG_PORT_QUEUE_NUM_MASK GENMASK(29, 24)
+
+/* Ports 0 and 5 have queues 0-5
+ * Ports 1 to 4 have queues 0-3
+ */
+#define EG_PRI5_QUEUE_NUM_MASK GENMASK(23, 20)
+#define EG_PRI4_QUEUE_NUM_MASK GENMASK(19, 16)
+#define EG_PRI3_QUEUE_NUM_MASK GENMASK(15, 12)
+#define EG_PRI2_QUEUE_NUM_MASK GENMASK(11, 8)
+#define EG_PRI1_QUEUE_NUM_MASK GENMASK(7, 4)
+#define EG_PRI0_QUEUE_NUM_MASK GENMASK(3, 0)
+
+#define ESS_PORT_HOL_CTRL1(_p) (0x974 + (_p) * 8)
+#define ESS_ING_BUF_NUM_0_MASK GENMASK(3, 0)
+
+/* QCA807x PHY registers */
+#define QCA807X_CHIP_CONFIGURATION 0x1f
+#define QCA807X_MEDIA_PAGE_SELECT BIT(15)
+
+#define QCA807X_POWER_DOWN BIT(11)
+
+#define QCA807X_FUNCTION_CONTROL 0x10
+#define QCA807X_MDI_CROSSOVER_MODE_MASK GENMASK(6, 5)
+#define QCA807X_MDI_CROSSOVER_MODE_MANUAL_MDI 0
+#define QCA807X_POLARITY_REVERSAL BIT(1)
+
+#define QCA807X_PHY_SPECIFIC 0x11
+#define QCA807X_PHY_SPECIFIC_LINK BIT(10)
+
+#define QCA807X_MMD7_CRC_PACKET_COUNTER 0x8029
+#define QCA807X_MMD7_PACKET_COUNTER_SELFCLR BIT(1)
+#define QCA807X_MMD7_CRC_PACKET_COUNTER_EN BIT(0)
+#define QCA807X_MMD7_VALID_EGRESS_COUNTER_2 0x802e
+
+/* PSGMII specific registers */
+#define PSGMIIPHY_VCO_CALIBRATION_CTRL_REGISTER_1 0x9c
+#define PSGMIIPHY_VCO_VAL 0x4ada
+#define PSGMIIPHY_VCO_RST_VAL 0xada
+#define PSGMIIPHY_VCO_CALIBRATION_CTRL_REGISTER_2 0xa0
+
+#define PSGMIIPHY_PLL_VCO_RELATED_CTRL 0x78c
+#define PSGMIIPHY_PLL_VCO_VAL 0x2803
+
+#define RGMII_TCSR_ESS_CFG 0x01953000
+
+/* EDMA registers */
+#define IPQ40XX_EDMA_TX_RING_SIZE 8
+#define IPQ40XX_EDMA_RSS_TYPE_NONE 0x1
+
+#define EDMA_RSS_TYPE 0
+#define EDMA_TPD_EOP_SHIFT 31
+
+/* tpd word 3 bit 18-28 */
+#define EDMA_TPD_PORT_BITMAP_SHIFT 18
+
+/* Enable Tx for all ports */
+#define EDMA_PORT_ENABLE_ALL 0x3E
+
+/* Edma receive consumer index */
+/* x = queue id */
+#define EDMA_REG_RX_SW_CONS_IDX_Q(x) (0x220 + ((x) << 2))
+/* Edma transmit consumer index */
+#define EDMA_REG_TX_SW_CONS_IDX_Q(x) (0x240 + ((x) << 2))
+/* TPD Index Register */
+#define EDMA_REG_TPD_IDX_Q(x) (0x460 + ((x) << 2))
+/* Tx Descriptor Control Register */
+#define EDMA_REG_TPD_RING_SIZE 0x41C
+#define EDMA_TPD_RING_SIZE_MASK 0xFFFF
+
+/* Transmit descriptor base address */
+ /* x = queue id */
+#define EDMA_REG_TPD_BASE_ADDR_Q(x) (0x420 + ((x) << 2))
+#define EDMA_TPD_PROD_IDX_MASK GENMASK(15, 0)
+#define EDMA_TPD_CONS_IDX_MASK GENMASK(31, 16)
+
+#define EDMA_REG_TX_SRAM_PART 0x400
+#define EDMA_LOAD_PTR_SHIFT 16
+
+/* TXQ Control Register */
+#define EDMA_REG_TXQ_CTRL 0x404
+#define EDMA_TXQ_CTRL_TXQ_EN 0x20
+#define EDMA_TXQ_CTRL_TPD_BURST_EN 0x100
+#define EDMA_TXQ_NUM_TPD_BURST_SHIFT 0
+#define EDMA_TXQ_TXF_BURST_NUM_SHIFT 16
+#define EDMA_TXF_BURST 0x100
+#define EDMA_TPD_BURST 5
+
+#define EDMA_REG_TXF_WATER_MARK 0x408
+
+/* RSS Indirection Register */
+/* x = No. of indirection table */
+#define EDMA_REG_RSS_IDT(x) (0x840 + ((x) << 2))
+#define EDMA_NUM_IDT 16
+#define EDMA_RSS_IDT_VALUE 0x64206420
+
+/* RSS Hash Function Type Register */
+#define EDMA_REG_RSS_TYPE 0x894
+
+/* x = queue id */
+#define EDMA_REG_RFD_BASE_ADDR_Q(x) (0x950 + ((x) << 2))
+/* RFD Index Register */
+#define EDMA_RFD_BURST 8
+#define EDMA_RFD_THR 16
+#define EDMA_RFD_LTHR 0
+#define EDMA_REG_RFD_IDX_Q(x) (0x9B0 + ((x) << 2))
+
+#define EDMA_RFD_CONS_IDX_MASK GENMASK(27, 16)
+
+/* Rx Descriptor Control Register */
+#define EDMA_REG_RX_DESC0 0xA10
+#define EDMA_RFD_RING_SIZE_MASK 0xFFF
+#define EDMA_RX_BUF_SIZE_MASK 0xFFFF
+#define EDMA_RFD_RING_SIZE_SHIFT 0
+#define EDMA_RX_BUF_SIZE_SHIFT 16
+
+#define EDMA_REG_RX_DESC1 0xA14
+#define EDMA_RXQ_RFD_BURST_NUM_SHIFT 0
+#define EDMA_RXQ_RFD_PF_THRESH_SHIFT 8
+#define EDMA_RXQ_RFD_LOW_THRESH_SHIFT 16
+
+/* RXQ Control Register */
+#define EDMA_REG_RXQ_CTRL 0xA18
+#define EDMA_FIFO_THRESH_128_BYTE 0x0
+#define EDMA_RXQ_CTRL_RMV_VLAN 0x00000002
+#define EDMA_RXQ_CTRL_EN 0x0000FF00
+
+/* MAC Control Register */
+#define REG_MAC_CTRL0 0xC20
+#define REG_MAC_CTRL1 0xC24
+
+/* Transmit Packet Descriptor */
+struct edma_tpd {
+ u16 len; /* full packet including CRC */
+ u16 svlan_tag; /* vlan tag */
+ u32 word1; /* byte 4-7 */
+ u32 addr; /* address of buffer */
+ u32 word3; /* byte 12 */
+};
+
+/* Receive Return Descriptor */
+struct edma_rrd {
+ u16 rrd0;
+ u16 rrd1;
+ u16 rrd2;
+ u16 rrd3;
+ u16 rrd4;
+ u16 rrd5;
+ u16 rrd6;
+ u16 rrd7;
+} __packed;
+
+#define EDMA_RRD_SIZE sizeof(struct edma_rrd)
+
+#define EDMA_RRD7_DESC_VALID BIT(15)
+
+/* Receive Free Descriptor */
+struct edma_rfd {
+ u32 buffer_addr; /* buffer address */
+};
+
+#endif /* _ESSEDMA_ETH_H */
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