path: root/target/linux/ipq40xx/patches-4.14/712-mr33-essedma.patch

--- a/drivers/net/ethernet/qualcomm/essedma/edma_axi.c
+++ b/drivers/net/ethernet/qualcomm/essedma/edma_axi.c
@@ -17,6 +17,11 @@
 #include <linux/of.h>
 #include <linux/of_net.h>
 #include <linux/timer.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/clk.h>
+#include <linux/string.h>
+#include <linux/reset.h>
 #include "edma.h"
 #include "ess_edma.h"
 
@@ -83,7 +88,103 @@ void edma_read_reg(u16 reg_addr, volatil
 	*reg_value = readl((void __iomem *)(edma_hw_addr + reg_addr));
 }
 
-/* edma_change_tx_coalesce()
+static void ess_write_reg(struct edma_common_info *edma, u16 reg_addr, u32 reg_value)
+{
+	writel(reg_value, ((void __iomem *)
+		((unsigned long)edma->ess_hw_addr + reg_addr)));
+}
+
+static void ess_read_reg(struct edma_common_info *edma, u16 reg_addr,
+		  volatile u32 *reg_value)
+{
+	*reg_value = readl((void __iomem *)
+		((unsigned long)edma->ess_hw_addr + reg_addr));
+}
+
+static int ess_reset(struct edma_common_info *edma)
+{
+	struct device_node *switch_node = NULL;
+	struct reset_control *ess_rst;
+	u32 regval;
+
+	switch_node = of_find_node_by_name(NULL, "ess-switch");
+	if (!switch_node) {
+		pr_err("switch-node not found\n");
+		return -EINVAL;
+	}
+
+	ess_rst = of_reset_control_get(switch_node, "ess_rst");
+	of_node_put(switch_node);
+
+	if (IS_ERR(ess_rst)) {
+		pr_err("failed to find ess_rst!\n");
+		return -ENOENT;
+	}
+
+	reset_control_assert(ess_rst);
+	msleep(10);
+	reset_control_deassert(ess_rst);
+	msleep(100);
+	reset_control_put(ess_rst);
+
+	/* Enable only port 5 <--> port 0
+	 * bits 0:6 bitmap of ports it can fwd to */
+#define SET_PORT_BMP(r,v) \
+		ess_read_reg(edma, r, &regval); \
+		ess_write_reg(edma, r, ((regval & ~0x3F) | v));
+
+	SET_PORT_BMP(ESS_PORT0_LOOKUP_CTRL,0x20);
+	SET_PORT_BMP(ESS_PORT1_LOOKUP_CTRL,0x00);
+	SET_PORT_BMP(ESS_PORT2_LOOKUP_CTRL,0x00);
+	SET_PORT_BMP(ESS_PORT3_LOOKUP_CTRL,0x00);
+	SET_PORT_BMP(ESS_PORT4_LOOKUP_CTRL,0x00);
+	SET_PORT_BMP(ESS_PORT5_LOOKUP_CTRL,0x01);
+	ess_write_reg(edma, ESS_RGMII_CTRL, 0x400);
+	ess_write_reg(edma, ESS_PORT0_STATUS, ESS_PORT_1G_FDX);
+	ess_write_reg(edma, ESS_PORT5_STATUS, ESS_PORT_1G_FDX);
+	ess_write_reg(edma, ESS_PORT0_HEADER_CTRL, 0);
+#undef SET_PORT_BMP
+
+	/* forward multicast and broadcast frames to CPU */
+	ess_write_reg(edma, ESS_FWD_CTRL1,
+		(ESS_PORTS_ALL << ESS_FWD_CTRL1_UC_FLOOD_S) |
+		(ESS_PORTS_ALL << ESS_FWD_CTRL1_MC_FLOOD_S) |
+		(ESS_PORTS_ALL << ESS_FWD_CTRL1_BC_FLOOD_S));
+
+	return 0;
+}
+
+void ess_set_port_status_speed(struct edma_common_info *edma,
+			       struct phy_device *phydev, uint8_t port_id)
+{
+	uint16_t reg_off = ESS_PORT0_STATUS + (4 * port_id);
+	uint32_t reg_val = 0;
+
+	ess_read_reg(edma, reg_off, &reg_val);
+
+	/* reset the speed bits [0:1] */
+	reg_val &= ~ESS_PORT_STATUS_SPEED_INV;
+
+	/* set the new speed */
+	switch(phydev->speed) {
+		case SPEED_1000:  reg_val |= ESS_PORT_STATUS_SPEED_1000; break;
+		case SPEED_100:   reg_val |= ESS_PORT_STATUS_SPEED_100;  break;
+		case SPEED_10:    reg_val |= ESS_PORT_STATUS_SPEED_10;   break;
+		default:          reg_val |= ESS_PORT_STATUS_SPEED_INV;  break;
+	}
+
+	/* check full/half duplex */
+	if (phydev->duplex) {
+		reg_val |= ESS_PORT_STATUS_DUPLEX_MODE;
+	} else {
+		reg_val &= ~ESS_PORT_STATUS_DUPLEX_MODE;
+	}
+
+	ess_write_reg(edma, reg_off, reg_val);
+}
+
+/*
+ * edma_change_tx_coalesce()
  *	change tx interrupt moderation timer
  */
 void edma_change_tx_coalesce(int usecs)
@@ -551,6 +652,31 @@ static struct ctl_table edma_table[] = {
 	{}
 };
 
+static int ess_parse(struct edma_common_info *edma)
+{
+	struct device_node *switch_node;
+	int ret = -EINVAL;
+
+	switch_node = of_find_node_by_name(NULL, "ess-switch");
+	if (!switch_node) {
+		pr_err("cannot find ess-switch node\n");
+		goto out;
+	}
+
+	edma->ess_hw_addr = of_io_request_and_map(switch_node,
+						  0, KBUILD_MODNAME);
+	if (!edma->ess_hw_addr) {
+		pr_err("%s ioremap fail.", __func__);
+		goto out;
+	}
+
+	edma->ess_clk = of_clk_get_by_name(switch_node, "ess_clk");
+	ret = clk_prepare_enable(edma->ess_clk);
+out:
+	of_node_put(switch_node);
+	return ret;
+}
+
 /* edma_axi_netdev_ops
  *	Describe the operations supported by registered netdevices
  *
@@ -786,6 +912,17 @@ static int edma_axi_probe(struct platfor
 		miibus = mdio_data->mii_bus;
 	}
 
+	if (of_property_read_bool(np, "qcom,single-phy") &&
+	    edma_cinfo->num_gmac == 1) {
+		err = ess_parse(edma_cinfo);
+		if (!err)
+			err = ess_reset(edma_cinfo);
+		if (err)
+			goto err_single_phy_init;
+		else
+			edma_cinfo->is_single_phy = true;
+	}
+
 	for_each_available_child_of_node(np, pnp) {
 		const char *mac_addr;
 
@@ -1074,11 +1211,15 @@ static int edma_axi_probe(struct platfor
 
 	for (i = 0; i < edma_cinfo->num_gmac; i++) {
 		if (adapter[i]->poll_required) {
+			int phy_mode = of_get_phy_mode(np);
+
+			if (phy_mode < 0)
+				phy_mode = PHY_INTERFACE_MODE_SGMII;
 			adapter[i]->phydev =
 				phy_connect(edma_netdev[i],
 					    (const char *)adapter[i]->phy_id,
 					    &edma_adjust_link,
-					    PHY_INTERFACE_MODE_SGMII);
+					    phy_mode);
 			if (IS_ERR(adapter[i]->phydev)) {
 				dev_dbg(&pdev->dev, "PHY attach FAIL");
 				err = -EIO;
@@ -1125,6 +1266,9 @@ err_rmap_alloc_fail:
 	for (i = 0; i < edma_cinfo->num_gmac; i++)
 		unregister_netdev(edma_netdev[i]);
 err_register:
+err_single_phy_init:
+	iounmap(edma_cinfo->ess_hw_addr);
+	clk_disable_unprepare(edma_cinfo->ess_clk);
 err_mdiobus_init_fail:
 	edma_free_rx_rings(edma_cinfo);
 err_rx_rinit:
@@ -1185,6 +1329,8 @@ static int edma_axi_remove(struct platfo
 	del_timer_sync(&edma_stats_timer);
 	edma_free_irqs(adapter);
 	unregister_net_sysctl_table(edma_cinfo->edma_ctl_table_hdr);
+	iounmap(edma_cinfo->ess_hw_addr);
+	clk_disable_unprepare(edma_cinfo->ess_clk);
 	edma_free_tx_resources(edma_cinfo);
 	edma_free_rx_resources(edma_cinfo);
 	edma_free_tx_rings(edma_cinfo);
--- a/drivers/net/ethernet/qualcomm/essedma/edma.c
+++ b/drivers/net/ethernet/qualcomm/essedma/edma.c
@@ -161,8 +161,10 @@ static void edma_configure_rx(struct edm
 	/* Set Rx FIFO threshold to start to DMA data to host */
 	rxq_ctrl_data = EDMA_FIFO_THRESH_128_BYTE;
 
-	/* Set RX remove vlan bit */
-	rxq_ctrl_data |= EDMA_RXQ_CTRL_RMV_VLAN;
+	if (!edma_cinfo->is_single_phy) {
+		/* Set RX remove vlan bit */
+		rxq_ctrl_data |= EDMA_RXQ_CTRL_RMV_VLAN;
+	}
 
 	edma_write_reg(EDMA_REG_RXQ_CTRL, rxq_ctrl_data);
 }
@@ -1295,6 +1297,10 @@ void edma_adjust_link(struct net_device
 	if (status == __EDMA_LINKUP && adapter->link_state == __EDMA_LINKDOWN) {
 		dev_info(&adapter->pdev->dev, "%s: GMAC Link is up with phy_speed=%d\n", netdev->name, phydev->speed);
 		adapter->link_state = __EDMA_LINKUP;
+		if (adapter->edma_cinfo->is_single_phy) {
+			ess_set_port_status_speed(adapter->edma_cinfo, phydev,
+						  ffs(adapter->dp_bitmap) - 1);
+		}
 		netif_carrier_on(netdev);
 		if (netif_running(netdev))
 			netif_tx_wake_all_queues(netdev);
@@ -1388,10 +1394,12 @@ netdev_tx_t edma_xmit(struct sk_buff *sk
 	}
 
 	/* Check and mark VLAN tag offload */
-	if (skb_vlan_tag_present(skb))
-		flags_transmit |= EDMA_VLAN_TX_TAG_INSERT_FLAG;
-	else if (adapter->default_vlan_tag)
-		flags_transmit |= EDMA_VLAN_TX_TAG_INSERT_DEFAULT_FLAG;
+	if (!adapter->edma_cinfo->is_single_phy) {
+		if (unlikely(skb_vlan_tag_present(skb)))
+			flags_transmit |= EDMA_VLAN_TX_TAG_INSERT_FLAG;
+		else if (adapter->default_vlan_tag)
+			flags_transmit |= EDMA_VLAN_TX_TAG_INSERT_DEFAULT_FLAG;
+	}
 
 	/* Check and mark checksum offload */
 	if (likely(skb->ip_summed == CHECKSUM_PARTIAL))
--- a/drivers/net/ethernet/qualcomm/essedma/edma.h
+++ b/drivers/net/ethernet/qualcomm/essedma/edma.h
@@ -31,6 +31,7 @@
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/clk.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/sysctl.h>
@@ -331,6 +332,10 @@ struct edma_common_info {
 	struct edma_hw hw; /* edma hw specific structure */
 	struct edma_per_cpu_queues_info edma_percpu_info[CONFIG_NR_CPUS]; /* per cpu information */
 	spinlock_t stats_lock; /* protect edma stats area for updation */
+
+	bool is_single_phy;
+	void __iomem *ess_hw_addr;
+	struct clk *ess_clk;
 };
 
 /* transimit packet descriptor (tpd) ring */
@@ -443,4 +448,6 @@ void edma_change_tx_coalesce(int usecs);
 void edma_change_rx_coalesce(int usecs);
 void edma_get_tx_rx_coalesce(u32 *reg_val);
 void edma_clear_irq_status(void);
+void ess_set_port_status_speed(struct edma_common_info *edma_cinfo,
+                               struct phy_device *phydev, uint8_t port_id);
 #endif /* _EDMA_H_ */
--- a/drivers/net/ethernet/qualcomm/essedma/ess_edma.h
+++ b/drivers/net/ethernet/qualcomm/essedma/ess_edma.h
@@ -329,4 +329,61 @@ struct edma_hw;
 #define EDMA_RRD_PRIORITY_MASK 0x7
 #define EDMA_RRD_PORT_TYPE_SHIFT 7
 #define EDMA_RRD_PORT_TYPE_MASK 0x1F
+
+#define ESS_RGMII_CTRL		0x0004
+
+/* Port status registers */
+#define ESS_PORT0_STATUS	0x007C
+#define ESS_PORT1_STATUS	0x0080
+#define ESS_PORT2_STATUS	0x0084
+#define ESS_PORT3_STATUS	0x0088
+#define ESS_PORT4_STATUS	0x008C
+#define ESS_PORT5_STATUS	0x0090
+
+#define ESS_PORT_STATUS_HDX_FLOW_CTL	0x80
+#define ESS_PORT_STATUS_DUPLEX_MODE	0x40
+#define ESS_PORT_STATUS_RX_FLOW_EN	0x20
+#define ESS_PORT_STATUS_TX_FLOW_EN	0x10
+#define ESS_PORT_STATUS_RX_MAC_EN	0x08
+#define ESS_PORT_STATUS_TX_MAC_EN	0x04
+#define ESS_PORT_STATUS_SPEED_INV	0x03
+#define ESS_PORT_STATUS_SPEED_1000	0x02
+#define ESS_PORT_STATUS_SPEED_100	0x01
+#define ESS_PORT_STATUS_SPEED_10	0x00
+
+#define ESS_PORT_1G_FDX      (ESS_PORT_STATUS_DUPLEX_MODE | ESS_PORT_STATUS_RX_FLOW_EN | \
+			       ESS_PORT_STATUS_TX_FLOW_EN  | ESS_PORT_STATUS_RX_MAC_EN  | \
+			       ESS_PORT_STATUS_TX_MAC_EN   | ESS_PORT_STATUS_SPEED_1000)
+
+#define PHY_STATUS_REG			0x11
+#define PHY_STATUS_SPEED		0xC000
+#define PHY_STATUS_SPEED_SHIFT		14
+#define PHY_STATUS_DUPLEX		0x2000
+#define PHY_STATUS_DUPLEX_SHIFT	13
+#define PHY_STATUS_SPEED_DUPLEX_RESOLVED 0x0800
+#define PHY_STATUS_CARRIER		0x0400
+#define PHY_STATUS_CARRIER_SHIFT	10
+
+/* Port lookup control registers */
+#define ESS_PORT0_LOOKUP_CTRL	0x0660
+#define ESS_PORT1_LOOKUP_CTRL	0x066C
+#define ESS_PORT2_LOOKUP_CTRL	0x0678
+#define ESS_PORT3_LOOKUP_CTRL	0x0684
+#define ESS_PORT4_LOOKUP_CTRL	0x0690
+#define ESS_PORT5_LOOKUP_CTRL	0x069C
+
+#define ESS_PORT0_HEADER_CTRL	0x009C
+
+#define ESS_PORTS_ALL		0x3f
+
+#define ESS_FWD_CTRL1		0x0624
+#define   ESS_FWD_CTRL1_UC_FLOOD		BITS(0, 7)
+#define   ESS_FWD_CTRL1_UC_FLOOD_S		0
+#define   ESS_FWD_CTRL1_MC_FLOOD		BITS(8, 7)
+#define   ESS_FWD_CTRL1_MC_FLOOD_S		8
+#define   ESS_FWD_CTRL1_BC_FLOOD		BITS(16, 7)
+#define   ESS_FWD_CTRL1_BC_FLOOD_S		16
+#define   ESS_FWD_CTRL1_IGMP			BITS(24, 7)
+#define   ESS_FWD_CTRL1_IGMP_S			24
+
 #endif /* _ESS_EDMA_H_ */