// SPDX-License-Identifier: GPL-2.0-only

#include <linux/debugfs.h>
#include <linux/kernel.h>
#include <asm/mach-rtl838x/mach-rtl83xx.h>

#include "rtl83xx.h"

#define RTL838X_DRIVER_NAME "rtl838x"

#define RTL8390_LED_GLB_CTRL			(0x00E4)
#define RTL8390_LED_SET_2_3_CTRL		(0x00E8)
#define RTL8390_LED_SET_0_1_CTRL		(0x00EC)
#define RTL8390_LED_COPR_SET_SEL_CTRL(p)	(0x00F0 + (((p >> 4) << 2)))
#define RTL8390_LED_FIB_SET_SEL_CTRL(p)		(0x0100 + (((p >> 4) << 2)))
#define RTL8390_LED_COPR_PMASK_CTRL(p)		(0x0110 + (((p >> 5) << 2)))
#define RTL8390_LED_FIB_PMASK_CTRL(p)		(0x00118 + (((p >> 5) << 2)))
#define RTL8390_LED_COMBO_CTRL(p)		(0x0120 + (((p >> 5) << 2)))
#define RTL8390_LED_SW_CTRL			(0x0128)
#define RTL8390_LED_SW_P_EN_CTRL(p)		(0x012C + (((p / 10) << 2)))
#define RTL8390_LED_SW_P_CTRL(p)		(0x0144 + (((p) << 2)))

#define RTL838X_MIR_QID_CTRL(grp)		(0xAD44 + (((grp) << 2)))
#define RTL838X_MIR_RSPAN_VLAN_CTRL(grp)	(0xA340 + (((grp) << 2)))
#define RTL838X_MIR_RSPAN_VLAN_CTRL_MAC(grp)	(0xAA70 + (((grp) << 2)))
#define RTL838X_MIR_RSPAN_TX_CTRL		(0xA350)
#define RTL838X_MIR_RSPAN_TX_TAG_RM_CTRL	(0xAA80)
#define RTL838X_MIR_RSPAN_TX_TAG_EN_CTRL	(0xAA84)
#define RTL839X_MIR_RSPAN_VLAN_CTRL(grp)	(0xA340 + (((grp) << 2)))
#define RTL839X_MIR_RSPAN_TX_CTRL		(0x69b0)
#define RTL839X_MIR_RSPAN_TX_TAG_RM_CTRL	(0x2550)
#define RTL839X_MIR_RSPAN_TX_TAG_EN_CTRL	(0x2554)
#define RTL839X_MIR_SAMPLE_RATE_CTRL		(0x2558)

#define RTL838X_STAT_PRVTE_DROP_COUNTERS	(0x6A00)
#define RTL839X_STAT_PRVTE_DROP_COUNTERS	(0x3E00)
#define RTL930X_STAT_PRVTE_DROP_COUNTERS	(0xB5B8)
#define RTL931X_STAT_PRVTE_DROP_COUNTERS	(0xd800)

int rtl83xx_port_get_stp_state(struct rtl838x_switch_priv *priv, int port);
void rtl83xx_port_stp_state_set(struct dsa_switch *ds, int port, u8 state);
void rtl83xx_fast_age(struct dsa_switch *ds, int port);
u32 rtl838x_get_egress_rate(struct rtl838x_switch_priv *priv, int port);
u32 rtl839x_get_egress_rate(struct rtl838x_switch_priv *priv, int port);
int rtl838x_set_egress_rate(struct rtl838x_switch_priv *priv, int port, u32 rate);
int rtl839x_set_egress_rate(struct rtl838x_switch_priv *priv, int port, u32 rate);


const char *rtl838x_drop_cntr[] = {
    "ALE_TX_GOOD_PKTS", "MAC_RX_DROP", "ACL_FWD_DROP", "HW_ATTACK_PREVENTION_DROP",
    "RMA_DROP", "VLAN_IGR_FLTR_DROP", "INNER_OUTER_CFI_EQUAL_1_DROP", "PORT_MOVE_DROP",
    "NEW_SA_DROP", "MAC_LIMIT_SYS_DROP", "MAC_LIMIT_VLAN_DROP", "MAC_LIMIT_PORT_DROP",
    "SWITCH_MAC_DROP", "ROUTING_EXCEPTION_DROP", "DA_LKMISS_DROP", "RSPAN_DROP",
    "ACL_LKMISS_DROP", "ACL_DROP", "INBW_DROP", "IGR_METER_DROP",
    "ACCEPT_FRAME_TYPE_DROP", "STP_IGR_DROP", "INVALID_SA_DROP", "SA_BLOCKING_DROP",
    "DA_BLOCKING_DROP", "L2_INVALID_DPM_DROP", "MCST_INVALID_DPM_DROP", "RX_FLOW_CONTROL_DROP",
    "STORM_SPPRS_DROP", "LALS_DROP", "VLAN_EGR_FILTER_DROP", "STP_EGR_DROP",
    "SRC_PORT_FILTER_DROP", "PORT_ISOLATION_DROP", "ACL_FLTR_DROP", "MIRROR_FLTR_DROP",
    "TX_MAX_DROP", "LINK_DOWN_DROP", "FLOW_CONTROL_DROP", "BRIDGE .1d discards"
};

const char *rtl839x_drop_cntr[] = {
    "ALE_TX_GOOD_PKTS", "ERROR_PKTS", "EGR_ACL_DROP", "EGR_METER_DROP",
    "OAM", "CFM" "VLAN_IGR_FLTR", "VLAN_ERR",
    "INNER_OUTER_CFI_EQUAL_1", "VLAN_TAG_FORMAT", "SRC_PORT_SPENDING_TREE", "INBW",
    "RMA", "HW_ATTACK_PREVENTION", "PROTO_STORM", "MCAST_SA",
    "IGR_ACL_DROP", "IGR_METER_DROP", "DFLT_ACTION_FOR_MISS_ACL_AND_C2SC", "NEW_SA",
    "PORT_MOVE", "SA_BLOCKING", "ROUTING_EXCEPTION", "SRC_PORT_SPENDING_TREE_NON_FWDING",
    "MAC_LIMIT", "UNKNOW_STORM", "MISS_DROP", "CPU_MAC_DROP",
    "DA_BLOCKING", "SRC_PORT_FILTER_BEFORE_EGR_ACL", "VLAN_EGR_FILTER", "SPANNING_TRE",
    "PORT_ISOLATION", "OAM_EGRESS_DROP", "MIRROR_ISOLATION", "MAX_LEN_BEFORE_EGR_ACL",
    "SRC_PORT_FILTER_BEFORE_MIRROR", "MAX_LEN_BEFORE_MIRROR", "SPECIAL_CONGEST_BEFORE_MIRROR",
    "LINK_STATUS_BEFORE_MIRROR",
    "WRED_BEFORE_MIRROR", "MAX_LEN_AFTER_MIRROR", "SPECIAL_CONGEST_AFTER_MIRROR",
    "LINK_STATUS_AFTER_MIRROR",
    "WRED_AFTER_MIRROR"
};

const char *rtl930x_drop_cntr[] = {
	"OAM_PARSER", "UC_RPF", "DEI_CFI", "MAC_IP_SUBNET_BASED_VLAN", "VLAN_IGR_FILTER",
	"L2_UC_MC", "IPV_IP6_MC_BRIDGE", "PTP", "USER_DEF_0_3", "RESERVED",
	"RESERVED1", "RESERVED2", "BPDU_RMA", "LACP", "LLDP",
	"EAPOL", "XX_RMA", "L3_IPUC_NON_IP", "IP4_IP6_HEADER_ERROR", "L3_BAD_IP",
	"L3_DIP_DMAC_MISMATCH", "IP4_IP_OPTION", "IP_UC_MC_ROUTING_LOOK_UP_MISS", "L3_DST_NULL_INTF",
	"L3_PBR_NULL_INTF",
	"HOST_NULL_INTF", "ROUTE_NULL_INTF", "BRIDGING_ACTION", "ROUTING_ACTION", "IPMC_RPF",
	"L2_NEXTHOP_AGE_OUT", "L3_UC_TTL_FAIL", "L3_MC_TTL_FAIL", "L3_UC_MTU_FAIL", "L3_MC_MTU_FAIL",
	"L3_UC_ICMP_REDIR", "IP6_MLD_OTHER_ACT", "ND", "IP_MC_RESERVED", "IP6_HBH",
	"INVALID_SA", "L2_HASH_FULL", "NEW_SA", "PORT_MOVE_FORBID", "STATIC_PORT_MOVING",
	"DYNMIC_PORT_MOVING", "L3_CRC", "MAC_LIMIT", "ATTACK_PREVENT", "ACL_FWD_ACTION",
	"OAMPDU", "OAM_MUX", "TRUNK_FILTER", "ACL_DROP", "IGR_BW",
	"ACL_METER", "VLAN_ACCEPT_FRAME_TYPE", "MSTP_SRC_DROP_DISABLED_BLOCKING", "SA_BLOCK", "DA_BLOCK",
	"STORM_CONTROL", "VLAN_EGR_FILTER", "MSTP_DESTINATION_DROP", "SRC_PORT_FILTER", "PORT_ISOLATION",
	"TX_MAX_FRAME_SIZE", "EGR_LINK_STATUS", "MAC_TX_DISABLE", "MAC_PAUSE_FRAME", "MAC_RX_DROP",
	"MIRROR_ISOLATE", "RX_FC", "EGR_QUEUE", "HSM_RUNOUT", "ROUTING_DISABLE", "INVALID_L2_NEXTHOP_ENTRY",
	"L3_MC_SRC_FLT", "CPUTAG_FLT", "FWD_PMSK_NULL", "IPUC_ROUTING_LOOKUP_MISS", "MY_DEV_DROP",
	"STACK_NONUC_BLOCKING_PMSK", "STACK_PORT_NOT_FOUND", "ACL_LOOPBACK_DROP", "IP6_ROUTING_EXT_HEADER"
};

const char *rtl931x_drop_cntr[] = {
	"ALE_RX_GOOD_PKTS", "RX_MAX_FRAME_SIZE", "MAC_RX_DROP", "OPENFLOW_IP_MPLS_TTL", "OPENFLOW_TBL_MISS",
	"IGR_BW", "SPECIAL_CONGEST", "EGR_QUEUE", "RESERVED", "EGR_LINK_STATUS", "STACK_UCAST_NONUCAST_TTL", /* 10 */
	"STACK_NONUC_BLOCKING_PMSK", "L2_CRC", "SRC_PORT_FILTER", "PARSER_PACKET_TOO_LONG", "PARSER_MALFORM_PACKET",
	"MPLS_OVER_2_LBL", "EACL_METER", "IACL_METER", "PROTO_STORM", "INVALID_CAPWAP_HEADER", /* 20 */
	"MAC_IP_SUBNET_BASED_VLAN", "OAM_PARSER", "UC_MC_RPF", "IP_MAC_BINDING_MATCH_MISMATCH", "SA_BLOCK",
	"TUNNEL_IP_ADDRESS_CHECK", "EACL_DROP", "IACL_DROP", "ATTACK_PREVENT", "SYSTEM_PORT_LIMIT_LEARN", /* 30 */
	"OAMPDU", "CCM_RX", "CFM_UNKNOWN_TYPE", "LBM_LBR_LTM_LTR", "Y_1731", "VLAN_LIMIT_LEARN",
	"VLAN_ACCEPT_FRAME_TYPE", "CFI_1", "STATIC_DYNAMIC_PORT_MOVING", "PORT_MOVE_FORBID", /* 40 */
	"L3_CRC", "BPDU_PTP_LLDP_EAPOL_RMA", "MSTP_SRC_DROP_DISABLED_BLOCKING", "INVALID_SA", "NEW_SA",
	"VLAN_IGR_FILTER", "IGR_VLAN_CONVERT", "GRATUITOUS_ARP", "MSTP_SRC_DROP", "L2_HASH_FULL", /* 50 */
	"MPLS_UNKNOWN_LBL", "L3_IPUC_NON_IP", "TTL", "MTU", "ICMP_REDIRECT", "STORM_CONTROL", "L3_DIP_DMAC_MISMATCH",
	"IP4_IP_OPTION", "IP6_HBH_EXT_HEADER", "IP4_IP6_HEADER_ERROR", /* 60 */
	"ROUTING_IP_ADDR_CHECK", "ROUTING_EXCEPTION", "DA_BLOCK", "OAM_MUX", "PORT_ISOLATION", "VLAN_EGR_FILTER",
	"MIRROR_ISOLATE", "MSTP_DESTINATION_DROP", "L2_MC_BRIDGE", "IP_UC_MC_ROUTING_LOOK_UP_MISS", /* 70 */
	"L2_UC", "L2_MC", "IP4_MC", "IP6_MC", "L3_UC_MC_ROUTE", "UNKNOWN_L2_UC_FLPM", "BC_FLPM",
	"VLAN_PRO_UNKNOWN_L2_MC_FLPM", "VLAN_PRO_UNKNOWN_IP4_MC_FLPM", "VLAN_PROFILE_UNKNOWN_IP6_MC_FLPM", /* 80 */
};

static ssize_t rtl838x_common_read(char __user *buffer, size_t count,
					loff_t *ppos, unsigned int value)
{
	char *buf;
	ssize_t len;

	if (*ppos != 0)
		return 0;

	buf = kasprintf(GFP_KERNEL, "0x%08x\n", value);
	if (!buf)
		return -ENOMEM;

	if (count < strlen(buf)) {
		kfree(buf);
		return -ENOSPC;
	}

	len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
	kfree(buf);

	return len;
}

static ssize_t rtl838x_common_write(const char __user *buffer, size_t count,
				 loff_t *ppos, unsigned int *value)
{
	char b[32];
	ssize_t len;
	int ret;

	if (*ppos != 0)
		return -EINVAL;

	if (count >= sizeof(b))
		return -ENOSPC;

	len = simple_write_to_buffer(b, sizeof(b) - 1, ppos,
				     buffer, count);
	if (len < 0)
		return len;

	b[len] = '\0';
	ret = kstrtouint(b, 16, value);
	if (ret)
		return -EIO;

	return len;
}

static ssize_t stp_state_read(struct file *filp, char __user *buffer, size_t count,
			     loff_t *ppos)
{
	struct rtl838x_port *p = filp->private_data;
	struct dsa_switch *ds = p->dp->ds;
	int value = rtl83xx_port_get_stp_state(ds->priv, p->dp->index);

	if (value < 0)
		return -EINVAL;

	return rtl838x_common_read(buffer, count, ppos, (u32)value);
}

static ssize_t stp_state_write(struct file *filp, const char __user *buffer,
				size_t count, loff_t *ppos)
{
	struct rtl838x_port *p = filp->private_data;
	u32 value;
	size_t res = rtl838x_common_write(buffer, count, ppos, &value);
	if (res < 0)
		return res;

	rtl83xx_port_stp_state_set(p->dp->ds, p->dp->index, (u8)value);

	return res;
}

static const struct file_operations stp_state_fops = {
	.owner = THIS_MODULE,
	.open = simple_open,
	.read = stp_state_read,
	.write = stp_state_write,
};

static ssize_t drop_counter_read(struct file *filp, char __user *buffer, size_t count,
			     loff_t *ppos)
{
	struct rtl838x_switch_priv *priv = filp->private_data;
	const char **d;
	u32 v;
	char *buf;
	int n = 0, len, offset;
	int num;

	switch (priv->family_id) {
	case RTL8380_FAMILY_ID:
		d = rtl838x_drop_cntr;
		offset = RTL838X_STAT_PRVTE_DROP_COUNTERS;
		num = 40;
		break;
	case RTL8390_FAMILY_ID:
		d = rtl839x_drop_cntr;
		offset = RTL839X_STAT_PRVTE_DROP_COUNTERS;
		num = 45;
		break;
	case RTL9300_FAMILY_ID:
		d = rtl930x_drop_cntr;
		offset = RTL930X_STAT_PRVTE_DROP_COUNTERS;
		num = 85;
		break;
	case RTL9310_FAMILY_ID:
		d = rtl931x_drop_cntr;
		offset = RTL931X_STAT_PRVTE_DROP_COUNTERS;
		num = 81;
		break;
	}

	buf = kmalloc(30 * num, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	for (int i = 0; i < num; i++) {
		v = sw_r32(offset + (i << 2)) & 0xffff;
		n += sprintf(buf + n, "%s: %d\n", d[i], v);
	}

	if (count < strlen(buf)) {
		kfree(buf);
		return -ENOSPC;
	}

	len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
	kfree(buf);

	return len;
}

static const struct file_operations drop_counter_fops = {
	.owner = THIS_MODULE,
	.open = simple_open,
	.read = drop_counter_read,
};

static void l2_table_print_entry(struct seq_file *m, struct rtl838x_switch_priv *priv,
				 struct rtl838x_l2_entry *e)
{
	u64 portmask;

	if (e->type == L2_UNICAST) {
		seq_puts(m, "L2_UNICAST\n");

		seq_printf(m, "  mac %02x:%02x:%02x:%02x:%02x:%02x vid %u rvid %u\n",
			e->mac[0], e->mac[1], e->mac[2], e->mac[3], e->mac[4], e->mac[5],
			e->vid, e->rvid);

		seq_printf(m, "  port %d age %d", e->port, e->age);
		if (e->is_static)
			seq_puts(m, " static");
		if (e->block_da)
			seq_puts(m, " block_da");
		if (e->block_sa)
			seq_puts(m, " block_sa");
		if (e->suspended)
			seq_puts(m, " suspended");
		if (e->next_hop)
			seq_printf(m, " next_hop route_id %u", e->nh_route_id);
		seq_puts(m, "\n");

	} else {
		if (e->type == L2_MULTICAST) {
			seq_puts(m, "L2_MULTICAST\n");

			seq_printf(m, "  mac %02x:%02x:%02x:%02x:%02x:%02x vid %u rvid %u\n",
				e->mac[0], e->mac[1], e->mac[2], e->mac[3], e->mac[4], e->mac[5],
				e->vid, e->rvid);
		}

		if (e->type == IP4_MULTICAST || e->type == IP6_MULTICAST) {
			seq_puts(m, (e->type == IP4_MULTICAST) ?
				    "IP4_MULTICAST\n" : "IP6_MULTICAST\n");

			seq_printf(m, "  gip %08x sip %08x vid %u rvid %u\n",
				e->mc_gip, e->mc_sip, e->vid, e->rvid);
		}

		portmask = priv->r->read_mcast_pmask(e->mc_portmask_index);
		seq_printf(m, "  index %u ports", e->mc_portmask_index);
		for (int i = 0; i < 64; i++) {
			if (portmask & BIT_ULL(i))
				seq_printf(m, " %d", i);
		}
		seq_puts(m, "\n");
	}

	seq_puts(m, "\n");
}

static int l2_table_show(struct seq_file *m, void *v)
{
	struct rtl838x_switch_priv *priv = m->private;
	struct rtl838x_l2_entry e;
	int bucket, index;

	mutex_lock(&priv->reg_mutex);

	for (int i = 0; i < priv->fib_entries; i++) {
		bucket = i >> 2;
		index = i & 0x3;
		priv->r->read_l2_entry_using_hash(bucket, index, &e);

		if (!e.valid)
			continue;

		seq_printf(m, "Hash table bucket %d index %d ", bucket, index);
		l2_table_print_entry(m, priv, &e);

		if (!((i + 1) % 64))
			cond_resched();
	}

	for (int i = 0; i < 64; i++) {
		priv->r->read_cam(i, &e);

		if (!e.valid)
			continue;

		seq_printf(m, "CAM index %d ", i);
		l2_table_print_entry(m, priv, &e);
	}

	mutex_unlock(&priv->reg_mutex);

	return 0;
}

static int l2_table_open(struct inode *inode, struct file *filp)
{
	return single_open(filp, l2_table_show, inode->i_private);
}

static const struct file_operations l2_table_fops = {
	.owner = THIS_MODULE,
	.open = l2_table_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

static ssize_t age_out_read(struct file *filp, char __user *buffer, size_t count,
			     loff_t *ppos)
{
	struct rtl838x_port *p = filp->private_data;
	struct dsa_switch *ds = p->dp->ds;
	struct rtl838x_switch_priv *priv = ds->priv;
	int value = sw_r32(priv->r->l2_port_aging_out);

	if (value < 0)
		return -EINVAL;

	return rtl838x_common_read(buffer, count, ppos, (u32)value);
}

static ssize_t age_out_write(struct file *filp, const char __user *buffer,
				size_t count, loff_t *ppos)
{
	struct rtl838x_port *p = filp->private_data;
	u32 value;
	size_t res = rtl838x_common_write(buffer, count, ppos, &value);
	if (res < 0)
		return res;

	rtl83xx_fast_age(p->dp->ds, p->dp->index);

	return res;
}

static const struct file_operations age_out_fops = {
	.owner = THIS_MODULE,
	.open = simple_open,
	.read = age_out_read,
	.write = age_out_write,
};

static ssize_t port_egress_rate_read(struct file *filp, char __user *buffer, size_t count,
				loff_t *ppos)
{
	struct rtl838x_port *p = filp->private_data;
	struct dsa_switch *ds = p->dp->ds;
	struct rtl838x_switch_priv *priv = ds->priv;
	int value;
	if (priv->family_id == RTL8380_FAMILY_ID)
		value = rtl838x_get_egress_rate(priv, p->dp->index);
	else
		value = rtl839x_get_egress_rate(priv, p->dp->index);

	if (value < 0)
		return -EINVAL;

	return rtl838x_common_read(buffer, count, ppos, (u32)value);
}

static ssize_t port_egress_rate_write(struct file *filp, const char __user *buffer,
				size_t count, loff_t *ppos)
{
	struct rtl838x_port *p = filp->private_data;
	struct dsa_switch *ds = p->dp->ds;
	struct rtl838x_switch_priv *priv = ds->priv;
	u32 value;
	size_t res = rtl838x_common_write(buffer, count, ppos, &value);
	if (res < 0)
		return res;

	if (priv->family_id == RTL8380_FAMILY_ID)
		rtl838x_set_egress_rate(priv, p->dp->index, value);
	else
		rtl839x_set_egress_rate(priv, p->dp->index, value);

	return res;
}

static const struct file_operations port_egress_fops = {
	.owner = THIS_MODULE,
	.open = simple_open,
	.read = port_egress_rate_read,
	.write = port_egress_rate_write,
};


static const struct debugfs_reg32 port_ctrl_regs[] = {
	{ .name = "port_isolation", .offset = RTL838X_PORT_ISO_CTRL(0), },
	{ .name = "mac_force_mode", .offset = RTL838X_MAC_FORCE_MODE_CTRL, },
};

void rtl838x_dbgfs_cleanup(struct rtl838x_switch_priv *priv)
{
	debugfs_remove_recursive(priv->dbgfs_dir);

/*	kfree(priv->dbgfs_entries); */
}

static int rtl838x_dbgfs_port_init(struct dentry *parent, struct rtl838x_switch_priv *priv,
				   int port)
{
	struct dentry *port_dir;
	struct debugfs_regset32 *port_ctrl_regset;

	port_dir = debugfs_create_dir(priv->ports[port].dp->name, parent);

	if (priv->family_id == RTL8380_FAMILY_ID) {
		debugfs_create_x32("storm_rate_uc", 0644, port_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_STORM_CTRL_PORT_UC(port)));

		debugfs_create_x32("storm_rate_mc", 0644, port_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_STORM_CTRL_PORT_MC(port)));

		debugfs_create_x32("storm_rate_bc", 0644, port_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_STORM_CTRL_PORT_BC(port)));
	} else {
		debugfs_create_x32("storm_rate_uc", 0644, port_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_STORM_CTRL_PORT_UC_0(port)));

		debugfs_create_x32("storm_rate_mc", 0644, port_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_STORM_CTRL_PORT_MC_0(port)));

		debugfs_create_x32("storm_rate_bc", 0644, port_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_STORM_CTRL_PORT_BC_0(port)));
	}

	debugfs_create_u32("id", 0444, port_dir, (u32 *)&priv->ports[port].dp->index);

	port_ctrl_regset = devm_kzalloc(priv->dev, sizeof(*port_ctrl_regset), GFP_KERNEL);
	if (!port_ctrl_regset)
		return -ENOMEM;

	port_ctrl_regset->regs = port_ctrl_regs;
	port_ctrl_regset->nregs = ARRAY_SIZE(port_ctrl_regs);
	port_ctrl_regset->base = (void *)(RTL838X_SW_BASE + (port << 2));
	debugfs_create_regset32("port_ctrl", 0400, port_dir, port_ctrl_regset);

	debugfs_create_file("stp_state", 0600, port_dir, &priv->ports[port], &stp_state_fops);
	debugfs_create_file("age_out", 0600, port_dir, &priv->ports[port], &age_out_fops);
	debugfs_create_file("port_egress_rate", 0600, port_dir, &priv->ports[port],
			    &port_egress_fops);
	return 0;
}

static int rtl838x_dbgfs_leds(struct dentry *parent, struct rtl838x_switch_priv *priv)
{
	struct dentry *led_dir;

	led_dir = debugfs_create_dir("led", parent);

	if (priv->family_id == RTL8380_FAMILY_ID) {
		debugfs_create_x32("led_glb_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED_GLB_CTRL));
		debugfs_create_x32("led_mode_sel", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED_MODE_SEL));
		debugfs_create_x32("led_mode_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED_MODE_CTRL));
		debugfs_create_x32("led_p_en_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED_P_EN_CTRL));
		debugfs_create_x32("led_sw_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED_SW_CTRL));
		debugfs_create_x32("led0_sw_p_en_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED0_SW_P_EN_CTRL));
		debugfs_create_x32("led1_sw_p_en_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED1_SW_P_EN_CTRL));
		debugfs_create_x32("led2_sw_p_en_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED2_SW_P_EN_CTRL));
		for (int p = 0; p < 28; p++) {
			char led_sw_p_ctrl_name[20];

			snprintf(led_sw_p_ctrl_name, sizeof(led_sw_p_ctrl_name),
				 "led_sw_p_ctrl.%02d", p);
			debugfs_create_x32(led_sw_p_ctrl_name, 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_LED_SW_P_CTRL_PORT(p)));
		}
	} else if (priv->family_id == RTL8390_FAMILY_ID) {
		char port_led_name[20];

		debugfs_create_x32("led_glb_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_GLB_CTRL));
		debugfs_create_x32("led_set_2_3", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_SET_2_3_CTRL));
		debugfs_create_x32("led_set_0_1", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_SET_0_1_CTRL));
		for (int p = 0; p < 4; p++) {
			snprintf(port_led_name, sizeof(port_led_name), "led_copr_set_sel.%1d", p);
			debugfs_create_x32(port_led_name, 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_COPR_SET_SEL_CTRL(p << 4)));
			snprintf(port_led_name, sizeof(port_led_name), "led_fib_set_sel.%1d", p);
			debugfs_create_x32(port_led_name, 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_FIB_SET_SEL_CTRL(p << 4)));
		}
		debugfs_create_x32("led_copr_pmask_ctrl_0", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_COPR_PMASK_CTRL(0)));
		debugfs_create_x32("led_copr_pmask_ctrl_1", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_COPR_PMASK_CTRL(32)));
		debugfs_create_x32("led_fib_pmask_ctrl_0", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_FIB_PMASK_CTRL(0)));
		debugfs_create_x32("led_fib_pmask_ctrl_1", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_FIB_PMASK_CTRL(32)));
		debugfs_create_x32("led_combo_ctrl_0", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_COMBO_CTRL(0)));
		debugfs_create_x32("led_combo_ctrl_1", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_COMBO_CTRL(32)));
		debugfs_create_x32("led_sw_ctrl", 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_SW_CTRL));
		for (int p = 0; p < 5; p++) {
			snprintf(port_led_name, sizeof(port_led_name), "led_sw_p_en_ctrl.%1d", p);
			debugfs_create_x32(port_led_name, 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_SW_P_EN_CTRL(p * 10)));
		}
		for (int p = 0; p < 28; p++) {
			snprintf(port_led_name, sizeof(port_led_name), "led_sw_p_ctrl.%02d", p);
			debugfs_create_x32(port_led_name, 0644, led_dir,
				(u32 *)(RTL838X_SW_BASE + RTL8390_LED_SW_P_CTRL(p)));
		}
	}
	return 0;
}

void rtl838x_dbgfs_init(struct rtl838x_switch_priv *priv)
{
	struct dentry *rtl838x_dir;
	struct dentry *port_dir;
	struct dentry *mirror_dir;
	struct debugfs_regset32 *port_ctrl_regset;
	int ret;
	char lag_name[10];
	char mirror_name[10];

	pr_info("%s called\n", __func__);
	rtl838x_dir = debugfs_lookup(RTL838X_DRIVER_NAME, NULL);
	if (!rtl838x_dir)
		rtl838x_dir = debugfs_create_dir(RTL838X_DRIVER_NAME, NULL);

	priv->dbgfs_dir = rtl838x_dir;

	debugfs_create_x32("soc", 0444, rtl838x_dir,
			   (u32 *)(RTL838X_SW_BASE + RTL838X_MODEL_NAME_INFO));

	/* Create one directory per port */
	for (int i = 0; i < priv->cpu_port; i++) {
		if (priv->ports[i].phy) {
			ret = rtl838x_dbgfs_port_init(rtl838x_dir, priv, i);
			if (ret)
				goto err;
		}
	}

	/* Create directory for CPU-port */
	port_dir = debugfs_create_dir("cpu_port", rtl838x_dir);
	port_ctrl_regset = devm_kzalloc(priv->dev, sizeof(*port_ctrl_regset), GFP_KERNEL);
	if (!port_ctrl_regset) {
		ret = -ENOMEM;
		goto err;
	}

	port_ctrl_regset->regs = port_ctrl_regs;
	port_ctrl_regset->nregs = ARRAY_SIZE(port_ctrl_regs);
	port_ctrl_regset->base = (void *)(RTL838X_SW_BASE + (priv->cpu_port << 2));
	debugfs_create_regset32("port_ctrl", 0400, port_dir, port_ctrl_regset);
	debugfs_create_u8("id", 0444, port_dir, &priv->cpu_port);

	/* Create entries for LAGs */
	for (int i = 0; i < priv->n_lags; i++) {
		snprintf(lag_name, sizeof(lag_name), "lag.%02d", i);
		if (priv->family_id == RTL8380_FAMILY_ID)
			debugfs_create_x32(lag_name, 0644, rtl838x_dir,
				(u32 *)(RTL838X_SW_BASE + priv->r->trk_mbr_ctr(i)));
		else
			debugfs_create_x64(lag_name, 0644, rtl838x_dir,
				(u64 *)(RTL838X_SW_BASE + priv->r->trk_mbr_ctr(i)));
	}

	/* Create directories for mirror groups */
	for (int i = 0; i < 4; i++) {
		snprintf(mirror_name, sizeof(mirror_name), "mirror.%1d", i);
		mirror_dir = debugfs_create_dir(mirror_name, rtl838x_dir);
		if (priv->family_id == RTL8380_FAMILY_ID) {
			debugfs_create_x32("ctrl", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_MIR_CTRL + i * 4));
			debugfs_create_x32("ingress_pm", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + priv->r->mir_spm + i * 4));
			debugfs_create_x32("egress_pm", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + priv->r->mir_dpm + i * 4));
			debugfs_create_x32("qid", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_MIR_QID_CTRL(i)));
			debugfs_create_x32("rspan_vlan", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_MIR_RSPAN_VLAN_CTRL(i)));
			debugfs_create_x32("rspan_vlan_mac", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_MIR_RSPAN_VLAN_CTRL_MAC(i)));
			debugfs_create_x32("rspan_tx", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_MIR_RSPAN_TX_CTRL));
			debugfs_create_x32("rspan_tx_tag_rm", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_MIR_RSPAN_TX_TAG_RM_CTRL));
			debugfs_create_x32("rspan_tx_tag_en", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_MIR_RSPAN_TX_TAG_EN_CTRL));
		} else {
			debugfs_create_x32("ctrl", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_MIR_CTRL + i * 4));
			debugfs_create_x64("ingress_pm", 0644, mirror_dir,
				(u64 *)(RTL838X_SW_BASE + priv->r->mir_spm + i * 8));
			debugfs_create_x64("egress_pm", 0644, mirror_dir,
				(u64 *)(RTL838X_SW_BASE + priv->r->mir_dpm + i * 8));
			debugfs_create_x32("rspan_vlan", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_MIR_RSPAN_VLAN_CTRL(i)));
			debugfs_create_x32("rspan_tx", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_MIR_RSPAN_TX_CTRL));
			debugfs_create_x32("rspan_tx_tag_rm", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_MIR_RSPAN_TX_TAG_RM_CTRL));
			debugfs_create_x32("rspan_tx_tag_en", 0644, mirror_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_MIR_RSPAN_TX_TAG_EN_CTRL));
			debugfs_create_x64("sample_rate", 0644, mirror_dir,
				(u64 *)(RTL838X_SW_BASE + RTL839X_MIR_SAMPLE_RATE_CTRL));
		}
	}

	if (priv->family_id == RTL8380_FAMILY_ID)
		debugfs_create_x32("bpdu_flood_mask", 0644, rtl838x_dir,
				(u32 *)(RTL838X_SW_BASE + priv->r->rma_bpdu_fld_pmask));
	else
		debugfs_create_x64("bpdu_flood_mask", 0644, rtl838x_dir,
				(u64 *)(RTL838X_SW_BASE + priv->r->rma_bpdu_fld_pmask));

	if (priv->family_id == RTL8380_FAMILY_ID)
		debugfs_create_x32("vlan_ctrl", 0644, rtl838x_dir,
				(u32 *)(RTL838X_SW_BASE + RTL838X_VLAN_CTRL));
	else
		debugfs_create_x32("vlan_ctrl", 0644, rtl838x_dir,
				(u32 *)(RTL838X_SW_BASE + RTL839X_VLAN_CTRL));

	ret = rtl838x_dbgfs_leds(rtl838x_dir, priv);
	if (ret)
		goto err;

	debugfs_create_file("drop_counters", 0400, rtl838x_dir, priv, &drop_counter_fops);

	debugfs_create_file("l2_table", 0400, rtl838x_dir, priv, &l2_table_fops);

	return;
err:
	rtl838x_dbgfs_cleanup(priv);
}

void rtl930x_dbgfs_init(struct rtl838x_switch_priv *priv)
{
	struct dentry *dbg_dir;

	pr_info("%s called\n", __func__);
	dbg_dir = debugfs_lookup(RTL838X_DRIVER_NAME, NULL);
	if (!dbg_dir)
		dbg_dir = debugfs_create_dir(RTL838X_DRIVER_NAME, NULL);

	priv->dbgfs_dir = dbg_dir;

	debugfs_create_file("drop_counters", 0400, dbg_dir, priv, &drop_counter_fops);

	debugfs_create_file("l2_table", 0400, dbg_dir, priv, &l2_table_fops);
}