OpenCloudOS-Kernel/drivers/net/ethernet/marvell/prestera/prestera_hw.c

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved */

#include <linux/etherdevice.h>
#include <linux/if_bridge.h>
#include <linux/ethtool.h>
#include <linux/list.h>

#include "prestera.h"
#include "prestera_hw.h"
#include "prestera_acl.h"
#include "prestera_counter.h"

#define PRESTERA_SWITCH_INIT_TIMEOUT_MS (30 * 1000)

#define PRESTERA_MIN_MTU 64

enum prestera_cmd_type_t {
	PRESTERA_CMD_TYPE_SWITCH_INIT = 0x1,
	PRESTERA_CMD_TYPE_SWITCH_ATTR_SET = 0x2,

	PRESTERA_CMD_TYPE_PORT_ATTR_SET = 0x100,
	PRESTERA_CMD_TYPE_PORT_ATTR_GET = 0x101,
	PRESTERA_CMD_TYPE_PORT_INFO_GET = 0x110,

	PRESTERA_CMD_TYPE_VLAN_CREATE = 0x200,
	PRESTERA_CMD_TYPE_VLAN_DELETE = 0x201,
	PRESTERA_CMD_TYPE_VLAN_PORT_SET = 0x202,
	PRESTERA_CMD_TYPE_VLAN_PVID_SET = 0x203,

	PRESTERA_CMD_TYPE_FDB_ADD = 0x300,
	PRESTERA_CMD_TYPE_FDB_DELETE = 0x301,
	PRESTERA_CMD_TYPE_FDB_FLUSH_PORT = 0x310,
	PRESTERA_CMD_TYPE_FDB_FLUSH_VLAN = 0x311,
	PRESTERA_CMD_TYPE_FDB_FLUSH_PORT_VLAN = 0x312,

	PRESTERA_CMD_TYPE_BRIDGE_CREATE = 0x400,
	PRESTERA_CMD_TYPE_BRIDGE_DELETE = 0x401,
	PRESTERA_CMD_TYPE_BRIDGE_PORT_ADD = 0x402,
	PRESTERA_CMD_TYPE_BRIDGE_PORT_DELETE = 0x403,

	PRESTERA_CMD_TYPE_COUNTER_GET = 0x510,
	PRESTERA_CMD_TYPE_COUNTER_ABORT = 0x511,
	PRESTERA_CMD_TYPE_COUNTER_TRIGGER = 0x512,
	PRESTERA_CMD_TYPE_COUNTER_BLOCK_GET = 0x513,
	PRESTERA_CMD_TYPE_COUNTER_BLOCK_RELEASE = 0x514,
	PRESTERA_CMD_TYPE_COUNTER_CLEAR = 0x515,

	PRESTERA_CMD_TYPE_VTCAM_CREATE = 0x540,
	PRESTERA_CMD_TYPE_VTCAM_DESTROY = 0x541,
	PRESTERA_CMD_TYPE_VTCAM_RULE_ADD = 0x550,
	PRESTERA_CMD_TYPE_VTCAM_RULE_DELETE = 0x551,
	PRESTERA_CMD_TYPE_VTCAM_IFACE_BIND = 0x560,
	PRESTERA_CMD_TYPE_VTCAM_IFACE_UNBIND = 0x561,

	PRESTERA_CMD_TYPE_ROUTER_RIF_CREATE = 0x600,
	PRESTERA_CMD_TYPE_ROUTER_RIF_DELETE = 0x601,
	PRESTERA_CMD_TYPE_ROUTER_LPM_ADD = 0x610,
	PRESTERA_CMD_TYPE_ROUTER_LPM_DELETE = 0x611,
	PRESTERA_CMD_TYPE_ROUTER_VR_CREATE = 0x630,
	PRESTERA_CMD_TYPE_ROUTER_VR_DELETE = 0x631,

	PRESTERA_CMD_TYPE_RXTX_INIT = 0x800,

	PRESTERA_CMD_TYPE_LAG_MEMBER_ADD = 0x900,
	PRESTERA_CMD_TYPE_LAG_MEMBER_DELETE = 0x901,
	PRESTERA_CMD_TYPE_LAG_MEMBER_ENABLE = 0x902,
	PRESTERA_CMD_TYPE_LAG_MEMBER_DISABLE = 0x903,

	PRESTERA_CMD_TYPE_STP_PORT_SET = 0x1000,

	PRESTERA_CMD_TYPE_SPAN_GET = 0x1100,
	PRESTERA_CMD_TYPE_SPAN_BIND = 0x1101,
	PRESTERA_CMD_TYPE_SPAN_UNBIND = 0x1102,
	PRESTERA_CMD_TYPE_SPAN_RELEASE = 0x1103,

	PRESTERA_CMD_TYPE_CPU_CODE_COUNTERS_GET = 0x2000,

	PRESTERA_CMD_TYPE_ACK = 0x10000,
	PRESTERA_CMD_TYPE_MAX
};

enum {
	PRESTERA_CMD_PORT_ATTR_ADMIN_STATE = 1,
	PRESTERA_CMD_PORT_ATTR_MTU = 3,
	PRESTERA_CMD_PORT_ATTR_MAC = 4,
	PRESTERA_CMD_PORT_ATTR_SPEED = 5,
	PRESTERA_CMD_PORT_ATTR_ACCEPT_FRAME_TYPE = 6,
	PRESTERA_CMD_PORT_ATTR_LEARNING = 7,
	PRESTERA_CMD_PORT_ATTR_FLOOD = 8,
	PRESTERA_CMD_PORT_ATTR_CAPABILITY = 9,
	PRESTERA_CMD_PORT_ATTR_PHY_MODE = 12,
	PRESTERA_CMD_PORT_ATTR_TYPE = 13,
	PRESTERA_CMD_PORT_ATTR_STATS = 17,
	PRESTERA_CMD_PORT_ATTR_MAC_AUTONEG_RESTART = 18,
	PRESTERA_CMD_PORT_ATTR_PHY_AUTONEG_RESTART = 19,
	PRESTERA_CMD_PORT_ATTR_MAC_MODE = 22,
};

enum {
	PRESTERA_CMD_SWITCH_ATTR_MAC = 1,
	PRESTERA_CMD_SWITCH_ATTR_AGEING = 2,
};

enum {
	PRESTERA_CMD_ACK_OK,
	PRESTERA_CMD_ACK_FAILED,

	PRESTERA_CMD_ACK_MAX
};

enum {
	PRESTERA_PORT_TP_NA,
	PRESTERA_PORT_TP_MDI,
	PRESTERA_PORT_TP_MDIX,
	PRESTERA_PORT_TP_AUTO,
};

enum {
	PRESTERA_PORT_FLOOD_TYPE_UC = 0,
	PRESTERA_PORT_FLOOD_TYPE_MC = 1,
};

enum {
	PRESTERA_PORT_GOOD_OCTETS_RCV_CNT,
	PRESTERA_PORT_BAD_OCTETS_RCV_CNT,
	PRESTERA_PORT_MAC_TRANSMIT_ERR_CNT,
	PRESTERA_PORT_BRDC_PKTS_RCV_CNT,
	PRESTERA_PORT_MC_PKTS_RCV_CNT,
	PRESTERA_PORT_PKTS_64L_CNT,
	PRESTERA_PORT_PKTS_65TO127L_CNT,
	PRESTERA_PORT_PKTS_128TO255L_CNT,
	PRESTERA_PORT_PKTS_256TO511L_CNT,
	PRESTERA_PORT_PKTS_512TO1023L_CNT,
	PRESTERA_PORT_PKTS_1024TOMAXL_CNT,
	PRESTERA_PORT_EXCESSIVE_COLLISIONS_CNT,
	PRESTERA_PORT_MC_PKTS_SENT_CNT,
	PRESTERA_PORT_BRDC_PKTS_SENT_CNT,
	PRESTERA_PORT_FC_SENT_CNT,
	PRESTERA_PORT_GOOD_FC_RCV_CNT,
	PRESTERA_PORT_DROP_EVENTS_CNT,
	PRESTERA_PORT_UNDERSIZE_PKTS_CNT,
	PRESTERA_PORT_FRAGMENTS_PKTS_CNT,
	PRESTERA_PORT_OVERSIZE_PKTS_CNT,
	PRESTERA_PORT_JABBER_PKTS_CNT,
	PRESTERA_PORT_MAC_RCV_ERROR_CNT,
	PRESTERA_PORT_BAD_CRC_CNT,
	PRESTERA_PORT_COLLISIONS_CNT,
	PRESTERA_PORT_LATE_COLLISIONS_CNT,
	PRESTERA_PORT_GOOD_UC_PKTS_RCV_CNT,
	PRESTERA_PORT_GOOD_UC_PKTS_SENT_CNT,
	PRESTERA_PORT_MULTIPLE_PKTS_SENT_CNT,
	PRESTERA_PORT_DEFERRED_PKTS_SENT_CNT,
	PRESTERA_PORT_GOOD_OCTETS_SENT_CNT,

	PRESTERA_PORT_CNT_MAX
};

enum {
	PRESTERA_FC_NONE,
	PRESTERA_FC_SYMMETRIC,
	PRESTERA_FC_ASYMMETRIC,
	PRESTERA_FC_SYMM_ASYMM,
};

enum {
	PRESTERA_HW_FDB_ENTRY_TYPE_REG_PORT = 0,
	PRESTERA_HW_FDB_ENTRY_TYPE_LAG = 1,
	PRESTERA_HW_FDB_ENTRY_TYPE_MAX = 2,
};

struct prestera_fw_event_handler {
	struct list_head list;
	struct rcu_head rcu;
	enum prestera_event_type type;
	prestera_event_cb_t func;
	void *arg;
};

struct prestera_msg_cmd {
	__le32 type;
};

struct prestera_msg_ret {
	struct prestera_msg_cmd cmd;
	__le32 status;
};

struct prestera_msg_common_req {
	struct prestera_msg_cmd cmd;
};

struct prestera_msg_common_resp {
	struct prestera_msg_ret ret;
};

struct prestera_msg_switch_attr_req {
	struct prestera_msg_cmd cmd;
	__le32 attr;
	union {
		__le32 ageing_timeout_ms;
		struct {
			u8 mac[ETH_ALEN];
			u8 __pad[2];
		};
	} param;
};

struct prestera_msg_switch_init_resp {
	struct prestera_msg_ret ret;
	__le32 port_count;
	__le32 mtu_max;
	__le32 size_tbl_router_nexthop;
	u8 switch_id;
	u8 lag_max;
	u8 lag_member_max;
};

struct prestera_msg_event_port_param {
	union {
		struct {
			__le32 mode;
			__le32 speed;
			u8 oper;
			u8 duplex;
			u8 fc;
			u8 fec;
		} mac;
		struct {
			__le64 lmode_bmap;
			u8 mdix;
			u8 fc;
			u8 __pad[2];
		} __packed phy; /* make sure always 12 bytes size */
	};
};

struct prestera_msg_port_cap_param {
	__le64 link_mode;
	u8 type;
	u8 fec;
	u8 fc;
	u8 transceiver;
};

struct prestera_msg_port_flood_param {
	u8 type;
	u8 enable;
	u8 __pad[2];
};

union prestera_msg_port_param {
	__le32 mtu;
	__le32 speed;
	__le32 link_mode;
	u8 admin_state;
	u8 oper_state;
	u8 mac[ETH_ALEN];
	u8 accept_frm_type;
	u8 learning;
	u8 flood;
	u8 type;
	u8 duplex;
	u8 fec;
	u8 fc;
	union {
		struct {
			u8 admin;
			u8 fc;
			u8 ap_enable;
			u8 __reserved[5];
			union {
				struct {
					__le32 mode;
					__le32 speed;
					u8 inband;
					u8 duplex;
					u8 fec;
					u8 fec_supp;
				} reg_mode;
				struct {
					__le32 mode;
					__le32 speed;
					u8 fec;
					u8 fec_supp;
					u8 __pad[2];
				} ap_modes[PRESTERA_AP_PORT_MAX];
			};
		} mac;
		struct {
			__le64 modes;
			__le32 mode;
			u8 admin;
			u8 adv_enable;
			u8 mdix;
			u8 __pad;
		} phy;
	} link;

	struct prestera_msg_port_cap_param cap;
	struct prestera_msg_port_flood_param flood_ext;
	struct prestera_msg_event_port_param link_evt;
};

struct prestera_msg_port_attr_req {
	struct prestera_msg_cmd cmd;
	__le32 attr;
	__le32 port;
	__le32 dev;
	union prestera_msg_port_param param;
};

struct prestera_msg_port_attr_resp {
	struct prestera_msg_ret ret;
	union prestera_msg_port_param param;
};

struct prestera_msg_port_stats_resp {
	struct prestera_msg_ret ret;
	__le64 stats[PRESTERA_PORT_CNT_MAX];
};

struct prestera_msg_port_info_req {
	struct prestera_msg_cmd cmd;
	__le32 port;
};

struct prestera_msg_port_info_resp {
	struct prestera_msg_ret ret;
	__le32 hw_id;
	__le32 dev_id;
	__le16 fp_id;
	u8 pad[2];
};

struct prestera_msg_vlan_req {
	struct prestera_msg_cmd cmd;
	__le32 port;
	__le32 dev;
	__le16 vid;
	u8 is_member;
	u8 is_tagged;
};

struct prestera_msg_fdb_req {
	struct prestera_msg_cmd cmd;
	__le32 flush_mode;
	union {
		struct {
			__le32 port;
			__le32 dev;
		};
		__le16 lag_id;
	} dest;
	__le16 vid;
	u8 dest_type;
	u8 dynamic;
	u8 mac[ETH_ALEN];
	u8 __pad[2];
};

struct prestera_msg_bridge_req {
	struct prestera_msg_cmd cmd;
	__le32 port;
	__le32 dev;
	__le16 bridge;
	u8 pad[2];
};

struct prestera_msg_bridge_resp {
	struct prestera_msg_ret ret;
	__le16 bridge;
	u8 pad[2];
};

struct prestera_msg_vtcam_create_req {
	struct prestera_msg_cmd cmd;
	__le32 keymask[__PRESTERA_ACL_RULE_MATCH_TYPE_MAX];
	u8 direction;
	u8 lookup;
	u8 pad[2];
};

struct prestera_msg_vtcam_destroy_req {
	struct prestera_msg_cmd cmd;
	__le32 vtcam_id;
};

struct prestera_msg_vtcam_rule_add_req {
	struct prestera_msg_cmd cmd;
	__le32 key[__PRESTERA_ACL_RULE_MATCH_TYPE_MAX];
	__le32 keymask[__PRESTERA_ACL_RULE_MATCH_TYPE_MAX];
	__le32 vtcam_id;
	__le32 prio;
	__le32 n_act;
};

struct prestera_msg_vtcam_rule_del_req {
	struct prestera_msg_cmd cmd;
	__le32 vtcam_id;
	__le32 id;
};

struct prestera_msg_vtcam_bind_req {
	struct prestera_msg_cmd cmd;
	union {
		struct {
			__le32 hw_id;
			__le32 dev_id;
		} port;
		__le32 index;
	};
	__le32 vtcam_id;
	__le16 pcl_id;
	__le16 type;
};

struct prestera_msg_vtcam_resp {
	struct prestera_msg_ret ret;
	__le32 vtcam_id;
	__le32 rule_id;
};

struct prestera_msg_acl_action {
	__le32 id;
	__le32 __reserved;
	union {
		struct {
			__le32 index;
		} jump;
		struct {
			__le32 id;
		} count;
		__le32 reserved[6];
	};
};

struct prestera_msg_counter_req {
	struct prestera_msg_cmd cmd;
	__le32 client;
	__le32 block_id;
	__le32 num_counters;
};

struct prestera_msg_counter_stats {
	__le64 packets;
	__le64 bytes;
};

struct prestera_msg_counter_resp {
	struct prestera_msg_ret ret;
	__le32 block_id;
	__le32 offset;
	__le32 num_counters;
	__le32 done;
	struct prestera_msg_counter_stats stats[];
};

struct prestera_msg_span_req {
	struct prestera_msg_cmd cmd;
	__le32 port;
	__le32 dev;
	u8 id;
	u8 pad[3];
};

struct prestera_msg_span_resp {
	struct prestera_msg_ret ret;
	u8 id;
	u8 pad[3];
};

struct prestera_msg_stp_req {
	struct prestera_msg_cmd cmd;
	__le32 port;
	__le32 dev;
	__le16 vid;
	u8 state;
	u8 __pad;
};

struct prestera_msg_rxtx_req {
	struct prestera_msg_cmd cmd;
	u8 use_sdma;
	u8 pad[3];
};

struct prestera_msg_rxtx_resp {
	struct prestera_msg_ret ret;
	__le32 map_addr;
};

struct prestera_msg_iface {
	union {
		struct {
			__le32 dev;
			__le32 port;
		};
		__le16 lag_id;
	};
	__le16 vr_id;
	__le16 vid;
	u8 type;
	u8 __pad[3];
};

struct prestera_msg_ip_addr {
	union {
		__be32 ipv4;
		__be32 ipv6[4];
	} u;
	u8 v; /* e.g. PRESTERA_IPV4 */
	u8 __pad[3];
};

struct prestera_msg_rif_req {
	struct prestera_msg_cmd cmd;
	struct prestera_msg_iface iif;
	__le32 mtu;
	__le16 rif_id;
	__le16 __reserved;
	u8 mac[ETH_ALEN];
	u8 __pad[2];
};

struct prestera_msg_rif_resp {
	struct prestera_msg_ret ret;
	__le16 rif_id;
	u8 __pad[2];
};

struct prestera_msg_lpm_req {
	struct prestera_msg_cmd cmd;
	struct prestera_msg_ip_addr dst;
	__le32 grp_id;
	__le32 dst_len;
	__le16 vr_id;
	u8 __pad[2];
};

struct prestera_msg_vr_req {
	struct prestera_msg_cmd cmd;
	__le16 vr_id;
	u8 __pad[2];
};

struct prestera_msg_vr_resp {
	struct prestera_msg_ret ret;
	__le16 vr_id;
	u8 __pad[2];
};

struct prestera_msg_lag_req {
	struct prestera_msg_cmd cmd;
	__le32 port;
	__le32 dev;
	__le16 lag_id;
	u8 pad[2];
};

struct prestera_msg_cpu_code_counter_req {
	struct prestera_msg_cmd cmd;
	u8 counter_type;
	u8 code;
	u8 pad[2];
};

struct mvsw_msg_cpu_code_counter_ret {
	struct prestera_msg_ret ret;
	__le64 packet_count;
};

struct prestera_msg_event {
	__le16 type;
	__le16 id;
};

struct prestera_msg_event_port {
	struct prestera_msg_event id;
	__le32 port_id;
	struct prestera_msg_event_port_param param;
};

union prestera_msg_event_fdb_param {
	u8 mac[ETH_ALEN];
};

struct prestera_msg_event_fdb {
	struct prestera_msg_event id;
	__le32 vid;
	union {
		__le32 port_id;
		__le16 lag_id;
	} dest;
	union prestera_msg_event_fdb_param param;
	u8 dest_type;
};

static void prestera_hw_build_tests(void)
{
	/* check requests */
	BUILD_BUG_ON(sizeof(struct prestera_msg_common_req) != 4);
	BUILD_BUG_ON(sizeof(struct prestera_msg_switch_attr_req) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_req) != 144);
	BUILD_BUG_ON(sizeof(struct prestera_msg_port_info_req) != 8);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vlan_req) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_fdb_req) != 28);
	BUILD_BUG_ON(sizeof(struct prestera_msg_bridge_req) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_span_req) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_stp_req) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_rxtx_req) != 8);
	BUILD_BUG_ON(sizeof(struct prestera_msg_lag_req) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_cpu_code_counter_req) != 8);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vtcam_create_req) != 84);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vtcam_destroy_req) != 8);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vtcam_rule_add_req) != 168);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vtcam_rule_del_req) != 12);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vtcam_bind_req) != 20);
	BUILD_BUG_ON(sizeof(struct prestera_msg_acl_action) != 32);
	BUILD_BUG_ON(sizeof(struct prestera_msg_counter_req) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_counter_stats) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_rif_req) != 36);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vr_req) != 8);
	BUILD_BUG_ON(sizeof(struct prestera_msg_lpm_req) != 36);

	/*  structure that are part of req/resp fw messages */
	BUILD_BUG_ON(sizeof(struct prestera_msg_iface) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_ip_addr) != 20);

	/* check responses */
	BUILD_BUG_ON(sizeof(struct prestera_msg_common_resp) != 8);
	BUILD_BUG_ON(sizeof(struct prestera_msg_switch_init_resp) != 24);
	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_resp) != 136);
	BUILD_BUG_ON(sizeof(struct prestera_msg_port_stats_resp) != 248);
	BUILD_BUG_ON(sizeof(struct prestera_msg_port_info_resp) != 20);
	BUILD_BUG_ON(sizeof(struct prestera_msg_bridge_resp) != 12);
	BUILD_BUG_ON(sizeof(struct prestera_msg_span_resp) != 12);
	BUILD_BUG_ON(sizeof(struct prestera_msg_rxtx_resp) != 12);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vtcam_resp) != 16);
	BUILD_BUG_ON(sizeof(struct prestera_msg_counter_resp) != 24);
	BUILD_BUG_ON(sizeof(struct prestera_msg_rif_resp) != 12);
	BUILD_BUG_ON(sizeof(struct prestera_msg_vr_resp) != 12);

	/* check events */
	BUILD_BUG_ON(sizeof(struct prestera_msg_event_port) != 20);
	BUILD_BUG_ON(sizeof(struct prestera_msg_event_fdb) != 20);
}

static u8 prestera_hw_mdix_to_eth(u8 mode);
static void prestera_hw_remote_fc_to_eth(u8 fc, bool *pause, bool *asym_pause);

static int __prestera_cmd_ret(struct prestera_switch *sw,
			      enum prestera_cmd_type_t type,
			      struct prestera_msg_cmd *cmd, size_t clen,
			      struct prestera_msg_ret *ret, size_t rlen,
			      int waitms)
{
	struct prestera_device *dev = sw->dev;
	int err;

	cmd->type = __cpu_to_le32(type);

	err = dev->send_req(dev, 0, cmd, clen, ret, rlen, waitms);
	if (err)
		return err;

	if (ret->cmd.type != __cpu_to_le32(PRESTERA_CMD_TYPE_ACK))
		return -EBADE;
	if (ret->status != __cpu_to_le32(PRESTERA_CMD_ACK_OK))
		return -EINVAL;

	return 0;
}

static int prestera_cmd_ret(struct prestera_switch *sw,
			    enum prestera_cmd_type_t type,
			    struct prestera_msg_cmd *cmd, size_t clen,
			    struct prestera_msg_ret *ret, size_t rlen)
{
	return __prestera_cmd_ret(sw, type, cmd, clen, ret, rlen, 0);
}

static int prestera_cmd_ret_wait(struct prestera_switch *sw,
				 enum prestera_cmd_type_t type,
				 struct prestera_msg_cmd *cmd, size_t clen,
				 struct prestera_msg_ret *ret, size_t rlen,
				 int waitms)
{
	return __prestera_cmd_ret(sw, type, cmd, clen, ret, rlen, waitms);
}

static int prestera_cmd(struct prestera_switch *sw,
			enum prestera_cmd_type_t type,
			struct prestera_msg_cmd *cmd, size_t clen)
{
	struct prestera_msg_common_resp resp;

	return prestera_cmd_ret(sw, type, cmd, clen, &resp.ret, sizeof(resp));
}

static int prestera_fw_parse_port_evt(void *msg, struct prestera_event *evt)
{
	struct prestera_msg_event_port *hw_evt;

	hw_evt = (struct prestera_msg_event_port *)msg;

	evt->port_evt.port_id = __le32_to_cpu(hw_evt->port_id);

	if (evt->id == PRESTERA_PORT_EVENT_MAC_STATE_CHANGED) {
		evt->port_evt.data.mac.oper = hw_evt->param.mac.oper;
		evt->port_evt.data.mac.mode =
			__le32_to_cpu(hw_evt->param.mac.mode);
		evt->port_evt.data.mac.speed =
			__le32_to_cpu(hw_evt->param.mac.speed);
		evt->port_evt.data.mac.duplex = hw_evt->param.mac.duplex;
		evt->port_evt.data.mac.fc = hw_evt->param.mac.fc;
		evt->port_evt.data.mac.fec = hw_evt->param.mac.fec;
	} else {
		return -EINVAL;
	}

	return 0;
}

static int prestera_fw_parse_fdb_evt(void *msg, struct prestera_event *evt)
{
	struct prestera_msg_event_fdb *hw_evt = msg;

	switch (hw_evt->dest_type) {
	case PRESTERA_HW_FDB_ENTRY_TYPE_REG_PORT:
		evt->fdb_evt.type = PRESTERA_FDB_ENTRY_TYPE_REG_PORT;
		evt->fdb_evt.dest.port_id = __le32_to_cpu(hw_evt->dest.port_id);
		break;
	case PRESTERA_HW_FDB_ENTRY_TYPE_LAG:
		evt->fdb_evt.type = PRESTERA_FDB_ENTRY_TYPE_LAG;
		evt->fdb_evt.dest.lag_id = __le16_to_cpu(hw_evt->dest.lag_id);
		break;
	default:
		return -EINVAL;
	}

	evt->fdb_evt.vid = __le32_to_cpu(hw_evt->vid);

	ether_addr_copy(evt->fdb_evt.data.mac, hw_evt->param.mac);

	return 0;
}

static struct prestera_fw_evt_parser {
	int (*func)(void *msg, struct prestera_event *evt);
} fw_event_parsers[PRESTERA_EVENT_TYPE_MAX] = {
	[PRESTERA_EVENT_TYPE_PORT] = { .func = prestera_fw_parse_port_evt },
	[PRESTERA_EVENT_TYPE_FDB] = { .func = prestera_fw_parse_fdb_evt },
};

static struct prestera_fw_event_handler *
__find_event_handler(const struct prestera_switch *sw,
		     enum prestera_event_type type)
{
	struct prestera_fw_event_handler *eh;

	list_for_each_entry_rcu(eh, &sw->event_handlers, list) {
		if (eh->type == type)
			return eh;
	}

	return NULL;
}

static int prestera_find_event_handler(const struct prestera_switch *sw,
				       enum prestera_event_type type,
				       struct prestera_fw_event_handler *eh)
{
	struct prestera_fw_event_handler *tmp;
	int err = 0;

	rcu_read_lock();
	tmp = __find_event_handler(sw, type);
	if (tmp)
		*eh = *tmp;
	else
		err = -ENOENT;
	rcu_read_unlock();

	return err;
}

static int prestera_evt_recv(struct prestera_device *dev, void *buf, size_t size)
{
	struct prestera_switch *sw = dev->priv;
	struct prestera_msg_event *msg = buf;
	struct prestera_fw_event_handler eh;
	struct prestera_event evt;
	u16 msg_type;
	int err;

	msg_type = __le16_to_cpu(msg->type);
	if (msg_type >= PRESTERA_EVENT_TYPE_MAX)
		return -EINVAL;
	if (!fw_event_parsers[msg_type].func)
		return -ENOENT;

	err = prestera_find_event_handler(sw, msg_type, &eh);
	if (err)
		return err;

	evt.id = __le16_to_cpu(msg->id);

	err = fw_event_parsers[msg_type].func(buf, &evt);
	if (err)
		return err;

	eh.func(sw, &evt, eh.arg);

	return 0;
}

static void prestera_pkt_recv(struct prestera_device *dev)
{
	struct prestera_switch *sw = dev->priv;
	struct prestera_fw_event_handler eh;
	struct prestera_event ev;
	int err;

	ev.id = PRESTERA_RXTX_EVENT_RCV_PKT;

	err = prestera_find_event_handler(sw, PRESTERA_EVENT_TYPE_RXTX, &eh);
	if (err)
		return;

	eh.func(sw, &ev, eh.arg);
}

static u8 prestera_hw_mdix_to_eth(u8 mode)
{
	switch (mode) {
	case PRESTERA_PORT_TP_MDI:
		return ETH_TP_MDI;
	case PRESTERA_PORT_TP_MDIX:
		return ETH_TP_MDI_X;
	case PRESTERA_PORT_TP_AUTO:
		return ETH_TP_MDI_AUTO;
	default:
		return ETH_TP_MDI_INVALID;
	}
}

static u8 prestera_hw_mdix_from_eth(u8 mode)
{
	switch (mode) {
	case ETH_TP_MDI:
		return PRESTERA_PORT_TP_MDI;
	case ETH_TP_MDI_X:
		return PRESTERA_PORT_TP_MDIX;
	case ETH_TP_MDI_AUTO:
		return PRESTERA_PORT_TP_AUTO;
	default:
		return PRESTERA_PORT_TP_NA;
	}
}

int prestera_hw_port_info_get(const struct prestera_port *port,
			      u32 *dev_id, u32 *hw_id, u16 *fp_id)
{
	struct prestera_msg_port_info_req req = {
		.port = __cpu_to_le32(port->id),
	};
	struct prestera_msg_port_info_resp resp;
	int err;

	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_INFO_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*dev_id = __le32_to_cpu(resp.dev_id);
	*hw_id = __le32_to_cpu(resp.hw_id);
	*fp_id = __le16_to_cpu(resp.fp_id);

	return 0;
}

int prestera_hw_switch_mac_set(struct prestera_switch *sw, const char *mac)
{
	struct prestera_msg_switch_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_SWITCH_ATTR_MAC),
	};

	ether_addr_copy(req.param.mac, mac);

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_SWITCH_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_switch_init(struct prestera_switch *sw)
{
	struct prestera_msg_switch_init_resp resp;
	struct prestera_msg_common_req req;
	int err;

	INIT_LIST_HEAD(&sw->event_handlers);

	prestera_hw_build_tests();

	err = prestera_cmd_ret_wait(sw, PRESTERA_CMD_TYPE_SWITCH_INIT,
				    &req.cmd, sizeof(req),
				    &resp.ret, sizeof(resp),
				    PRESTERA_SWITCH_INIT_TIMEOUT_MS);
	if (err)
		return err;

	sw->dev->recv_msg = prestera_evt_recv;
	sw->dev->recv_pkt = prestera_pkt_recv;
	sw->port_count = __le32_to_cpu(resp.port_count);
	sw->mtu_min = PRESTERA_MIN_MTU;
	sw->mtu_max = __le32_to_cpu(resp.mtu_max);
	sw->id = resp.switch_id;
	sw->lag_member_max = resp.lag_member_max;
	sw->lag_max = resp.lag_max;

	return 0;
}

void prestera_hw_switch_fini(struct prestera_switch *sw)
{
	WARN_ON(!list_empty(&sw->event_handlers));
}

int prestera_hw_switch_ageing_set(struct prestera_switch *sw, u32 ageing_ms)
{
	struct prestera_msg_switch_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_SWITCH_ATTR_AGEING),
		.param = {
			.ageing_timeout_ms = __cpu_to_le32(ageing_ms),
		},
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_SWITCH_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_mac_mode_get(const struct prestera_port *port,
				  u32 *mode, u32 *speed, u8 *duplex, u8 *fec)
{
	struct prestera_msg_port_attr_resp resp;
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_MAC_MODE),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id)
	};
	int err;

	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	if (mode)
		*mode = __le32_to_cpu(resp.param.link_evt.mac.mode);

	if (speed)
		*speed = __le32_to_cpu(resp.param.link_evt.mac.speed);

	if (duplex)
		*duplex = resp.param.link_evt.mac.duplex;

	if (fec)
		*fec = resp.param.link_evt.mac.fec;

	return err;
}

int prestera_hw_port_mac_mode_set(const struct prestera_port *port,
				  bool admin, u32 mode, u8 inband,
				  u32 speed, u8 duplex, u8 fec)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_MAC_MODE),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.param = {
			.link = {
				.mac = {
					.admin = admin,
					.reg_mode.mode = __cpu_to_le32(mode),
					.reg_mode.inband = inband,
					.reg_mode.speed = __cpu_to_le32(speed),
					.reg_mode.duplex = duplex,
					.reg_mode.fec = fec
				}
			}
		}
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_phy_mode_get(const struct prestera_port *port,
				  u8 *mdix, u64 *lmode_bmap,
				  bool *fc_pause, bool *fc_asym)
{
	struct prestera_msg_port_attr_resp resp;
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_PHY_MODE),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id)
	};
	int err;

	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	if (mdix)
		*mdix = prestera_hw_mdix_to_eth(resp.param.link_evt.phy.mdix);

	if (lmode_bmap)
		*lmode_bmap = __le64_to_cpu(resp.param.link_evt.phy.lmode_bmap);

	if (fc_pause && fc_asym)
		prestera_hw_remote_fc_to_eth(resp.param.link_evt.phy.fc,
					     fc_pause, fc_asym);

	return err;
}

int prestera_hw_port_phy_mode_set(const struct prestera_port *port,
				  bool admin, bool adv, u32 mode, u64 modes,
				  u8 mdix)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_PHY_MODE),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.param = {
			.link = {
				.phy = {
					.admin = admin,
					.adv_enable = adv ? 1 : 0,
					.mode = __cpu_to_le32(mode),
					.modes = __cpu_to_le64(modes),
				}
			}
		}
	};

	req.param.link.phy.mdix = prestera_hw_mdix_from_eth(mdix);

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_mtu_set(const struct prestera_port *port, u32 mtu)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_MTU),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.param = {
			.mtu = __cpu_to_le32(mtu),
		}
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_mac_set(const struct prestera_port *port, const char *mac)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_MAC),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};

	ether_addr_copy(req.param.mac, mac);

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_accept_frm_type(struct prestera_port *port,
				     enum prestera_accept_frm_type type)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_ACCEPT_FRAME_TYPE),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.param = {
			.accept_frm_type = type,
		}
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_cap_get(const struct prestera_port *port,
			     struct prestera_port_caps *caps)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_CAPABILITY),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};
	struct prestera_msg_port_attr_resp resp;
	int err;

	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	caps->supp_link_modes = __le64_to_cpu(resp.param.cap.link_mode);
	caps->transceiver = resp.param.cap.transceiver;
	caps->supp_fec = resp.param.cap.fec;
	caps->type = resp.param.cap.type;

	return err;
}

static void prestera_hw_remote_fc_to_eth(u8 fc, bool *pause, bool *asym_pause)
{
	switch (fc) {
	case PRESTERA_FC_SYMMETRIC:
		*pause = true;
		*asym_pause = false;
		break;
	case PRESTERA_FC_ASYMMETRIC:
		*pause = false;
		*asym_pause = true;
		break;
	case PRESTERA_FC_SYMM_ASYMM:
		*pause = true;
		*asym_pause = true;
		break;
	default:
		*pause = false;
		*asym_pause = false;
	}
}

int prestera_hw_vtcam_create(struct prestera_switch *sw,
			     u8 lookup, const u32 *keymask, u32 *vtcam_id,
			     enum prestera_hw_vtcam_direction_t dir)
{
	int err;
	struct prestera_msg_vtcam_resp resp;
	struct prestera_msg_vtcam_create_req req = {
		.lookup = lookup,
		.direction = dir,
	};

	if (keymask)
		memcpy(req.keymask, keymask, sizeof(req.keymask));
	else
		memset(req.keymask, 0, sizeof(req.keymask));

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_VTCAM_CREATE,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*vtcam_id = __le32_to_cpu(resp.vtcam_id);
	return 0;
}

int prestera_hw_vtcam_destroy(struct prestera_switch *sw, u32 vtcam_id)
{
	struct prestera_msg_vtcam_destroy_req req = {
		.vtcam_id = __cpu_to_le32(vtcam_id),
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_VTCAM_DESTROY,
			    &req.cmd, sizeof(req));
}

static int
prestera_acl_rule_add_put_action(struct prestera_msg_acl_action *action,
				 struct prestera_acl_hw_action_info *info)
{
	action->id = __cpu_to_le32(info->id);

	switch (info->id) {
	case PRESTERA_ACL_RULE_ACTION_ACCEPT:
	case PRESTERA_ACL_RULE_ACTION_DROP:
	case PRESTERA_ACL_RULE_ACTION_TRAP:
		/* just rule action id, no specific data */
		break;
	case PRESTERA_ACL_RULE_ACTION_JUMP:
		action->jump.index = __cpu_to_le32(info->jump.index);
		break;
	case PRESTERA_ACL_RULE_ACTION_COUNT:
		action->count.id = __cpu_to_le32(info->count.id);
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

int prestera_hw_vtcam_rule_add(struct prestera_switch *sw,
			       u32 vtcam_id, u32 prio, void *key, void *keymask,
			       struct prestera_acl_hw_action_info *act,
			       u8 n_act, u32 *rule_id)
{
	struct prestera_msg_acl_action *actions_msg;
	struct prestera_msg_vtcam_rule_add_req *req;
	struct prestera_msg_vtcam_resp resp;
	void *buff;
	u32 size;
	int err;
	u8 i;

	size = sizeof(*req) + sizeof(*actions_msg) * n_act;

	buff = kzalloc(size, GFP_KERNEL);
	if (!buff)
		return -ENOMEM;

	req = buff;
	req->n_act = __cpu_to_le32(n_act);
	actions_msg = buff + sizeof(*req);

	/* put acl matches into the message */
	memcpy(req->key, key, sizeof(req->key));
	memcpy(req->keymask, keymask, sizeof(req->keymask));

	/* put acl actions into the message */
	for (i = 0; i < n_act; i++) {
		err = prestera_acl_rule_add_put_action(&actions_msg[i],
						       &act[i]);
		if (err)
			goto free_buff;
	}

	req->vtcam_id = __cpu_to_le32(vtcam_id);
	req->prio = __cpu_to_le32(prio);

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_VTCAM_RULE_ADD,
			       &req->cmd, size, &resp.ret, sizeof(resp));
	if (err)
		goto free_buff;

	*rule_id = __le32_to_cpu(resp.rule_id);
free_buff:
	kfree(buff);
	return err;
}

int prestera_hw_vtcam_rule_del(struct prestera_switch *sw,
			       u32 vtcam_id, u32 rule_id)
{
	struct prestera_msg_vtcam_rule_del_req req = {
		.vtcam_id = __cpu_to_le32(vtcam_id),
		.id = __cpu_to_le32(rule_id)
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_VTCAM_RULE_DELETE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_vtcam_iface_bind(struct prestera_switch *sw,
				 struct prestera_acl_iface *iface,
				 u32 vtcam_id, u16 pcl_id)
{
	struct prestera_msg_vtcam_bind_req req = {
		.vtcam_id = __cpu_to_le32(vtcam_id),
		.type = __cpu_to_le16(iface->type),
		.pcl_id = __cpu_to_le16(pcl_id)
	};

	if (iface->type == PRESTERA_ACL_IFACE_TYPE_PORT) {
		req.port.dev_id = __cpu_to_le32(iface->port->dev_id);
		req.port.hw_id = __cpu_to_le32(iface->port->hw_id);
	} else {
		req.index = __cpu_to_le32(iface->index);
	}

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_VTCAM_IFACE_BIND,
			    &req.cmd, sizeof(req));
}

int prestera_hw_vtcam_iface_unbind(struct prestera_switch *sw,
				   struct prestera_acl_iface *iface,
				   u32 vtcam_id)
{
	struct prestera_msg_vtcam_bind_req req = {
		.vtcam_id = __cpu_to_le32(vtcam_id),
		.type = __cpu_to_le16(iface->type)
	};

	if (iface->type == PRESTERA_ACL_IFACE_TYPE_PORT) {
		req.port.dev_id = __cpu_to_le32(iface->port->dev_id);
		req.port.hw_id = __cpu_to_le32(iface->port->hw_id);
	} else {
		req.index = __cpu_to_le32(iface->index);
	}

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_VTCAM_IFACE_UNBIND,
			    &req.cmd, sizeof(req));
}

int prestera_hw_span_get(const struct prestera_port *port, u8 *span_id)
{
	struct prestera_msg_span_resp resp;
	struct prestera_msg_span_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};
	int err;

	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_SPAN_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*span_id = resp.id;

	return 0;
}

int prestera_hw_span_bind(const struct prestera_port *port, u8 span_id)
{
	struct prestera_msg_span_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.id = span_id,
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_SPAN_BIND,
			    &req.cmd, sizeof(req));
}

int prestera_hw_span_unbind(const struct prestera_port *port)
{
	struct prestera_msg_span_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_SPAN_UNBIND,
			    &req.cmd, sizeof(req));
}

int prestera_hw_span_release(struct prestera_switch *sw, u8 span_id)
{
	struct prestera_msg_span_req req = {
		.id = span_id
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_SPAN_RELEASE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_type_get(const struct prestera_port *port, u8 *type)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_TYPE),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};
	struct prestera_msg_port_attr_resp resp;
	int err;

	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*type = resp.param.type;

	return 0;
}

int prestera_hw_port_speed_get(const struct prestera_port *port, u32 *speed)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_SPEED),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};
	struct prestera_msg_port_attr_resp resp;
	int err;

	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*speed = __le32_to_cpu(resp.param.speed);

	return 0;
}

int prestera_hw_port_autoneg_restart(struct prestera_port *port)
{
	struct prestera_msg_port_attr_req req = {
		.attr =
		    __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_PHY_AUTONEG_RESTART),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_stats_get(const struct prestera_port *port,
			       struct prestera_port_stats *st)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_STATS),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};
	struct prestera_msg_port_stats_resp resp;
	__le64 *hw = resp.stats;
	int err;

	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	st->good_octets_received =
		__le64_to_cpu(hw[PRESTERA_PORT_GOOD_OCTETS_RCV_CNT]);
	st->bad_octets_received =
		__le64_to_cpu(hw[PRESTERA_PORT_BAD_OCTETS_RCV_CNT]);
	st->mac_trans_error =
		__le64_to_cpu(hw[PRESTERA_PORT_MAC_TRANSMIT_ERR_CNT]);
	st->broadcast_frames_received =
		__le64_to_cpu(hw[PRESTERA_PORT_BRDC_PKTS_RCV_CNT]);
	st->multicast_frames_received =
		__le64_to_cpu(hw[PRESTERA_PORT_MC_PKTS_RCV_CNT]);
	st->frames_64_octets = __le64_to_cpu(hw[PRESTERA_PORT_PKTS_64L_CNT]);
	st->frames_65_to_127_octets =
		__le64_to_cpu(hw[PRESTERA_PORT_PKTS_65TO127L_CNT]);
	st->frames_128_to_255_octets =
		__le64_to_cpu(hw[PRESTERA_PORT_PKTS_128TO255L_CNT]);
	st->frames_256_to_511_octets =
		__le64_to_cpu(hw[PRESTERA_PORT_PKTS_256TO511L_CNT]);
	st->frames_512_to_1023_octets =
		__le64_to_cpu(hw[PRESTERA_PORT_PKTS_512TO1023L_CNT]);
	st->frames_1024_to_max_octets =
		__le64_to_cpu(hw[PRESTERA_PORT_PKTS_1024TOMAXL_CNT]);
	st->excessive_collision =
		__le64_to_cpu(hw[PRESTERA_PORT_EXCESSIVE_COLLISIONS_CNT]);
	st->multicast_frames_sent =
		__le64_to_cpu(hw[PRESTERA_PORT_MC_PKTS_SENT_CNT]);
	st->broadcast_frames_sent =
		__le64_to_cpu(hw[PRESTERA_PORT_BRDC_PKTS_SENT_CNT]);
	st->fc_sent = __le64_to_cpu(hw[PRESTERA_PORT_FC_SENT_CNT]);
	st->fc_received = __le64_to_cpu(hw[PRESTERA_PORT_GOOD_FC_RCV_CNT]);
	st->buffer_overrun = __le64_to_cpu(hw[PRESTERA_PORT_DROP_EVENTS_CNT]);
	st->undersize = __le64_to_cpu(hw[PRESTERA_PORT_UNDERSIZE_PKTS_CNT]);
	st->fragments = __le64_to_cpu(hw[PRESTERA_PORT_FRAGMENTS_PKTS_CNT]);
	st->oversize = __le64_to_cpu(hw[PRESTERA_PORT_OVERSIZE_PKTS_CNT]);
	st->jabber = __le64_to_cpu(hw[PRESTERA_PORT_JABBER_PKTS_CNT]);
	st->rx_error_frame_received =
		__le64_to_cpu(hw[PRESTERA_PORT_MAC_RCV_ERROR_CNT]);
	st->bad_crc = __le64_to_cpu(hw[PRESTERA_PORT_BAD_CRC_CNT]);
	st->collisions = __le64_to_cpu(hw[PRESTERA_PORT_COLLISIONS_CNT]);
	st->late_collision =
		__le64_to_cpu(hw[PRESTERA_PORT_LATE_COLLISIONS_CNT]);
	st->unicast_frames_received =
		__le64_to_cpu(hw[PRESTERA_PORT_GOOD_UC_PKTS_RCV_CNT]);
	st->unicast_frames_sent =
		__le64_to_cpu(hw[PRESTERA_PORT_GOOD_UC_PKTS_SENT_CNT]);
	st->sent_multiple =
		__le64_to_cpu(hw[PRESTERA_PORT_MULTIPLE_PKTS_SENT_CNT]);
	st->sent_deferred =
		__le64_to_cpu(hw[PRESTERA_PORT_DEFERRED_PKTS_SENT_CNT]);
	st->good_octets_sent =
		__le64_to_cpu(hw[PRESTERA_PORT_GOOD_OCTETS_SENT_CNT]);

	return 0;
}

int prestera_hw_port_learning_set(struct prestera_port *port, bool enable)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_LEARNING),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.param = {
			.learning = enable,
		}
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

static int prestera_hw_port_uc_flood_set(struct prestera_port *port, bool flood)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_FLOOD),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.param = {
			.flood_ext = {
				.type = PRESTERA_PORT_FLOOD_TYPE_UC,
				.enable = flood,
			}
		}
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

static int prestera_hw_port_mc_flood_set(struct prestera_port *port, bool flood)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_FLOOD),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.param = {
			.flood_ext = {
				.type = PRESTERA_PORT_FLOOD_TYPE_MC,
				.enable = flood,
			}
		}
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

static int prestera_hw_port_flood_set_v2(struct prestera_port *port, bool flood)
{
	struct prestera_msg_port_attr_req req = {
		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_FLOOD),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.param = {
			.flood = flood,
		}
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_port_flood_set(struct prestera_port *port, unsigned long mask,
			       unsigned long val)
{
	int err;

	if (port->sw->dev->fw_rev.maj <= 2) {
		if (!(mask & BR_FLOOD))
			return 0;

		return prestera_hw_port_flood_set_v2(port, val & BR_FLOOD);
	}

	if (mask & BR_FLOOD) {
		err = prestera_hw_port_uc_flood_set(port, val & BR_FLOOD);
		if (err)
			goto err_uc_flood;
	}

	if (mask & BR_MCAST_FLOOD) {
		err = prestera_hw_port_mc_flood_set(port, val & BR_MCAST_FLOOD);
		if (err)
			goto err_mc_flood;
	}

	return 0;

err_mc_flood:
	prestera_hw_port_mc_flood_set(port, 0);
err_uc_flood:
	if (mask & BR_FLOOD)
		prestera_hw_port_uc_flood_set(port, 0);

	return err;
}

int prestera_hw_vlan_create(struct prestera_switch *sw, u16 vid)
{
	struct prestera_msg_vlan_req req = {
		.vid = __cpu_to_le16(vid),
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_VLAN_CREATE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_vlan_delete(struct prestera_switch *sw, u16 vid)
{
	struct prestera_msg_vlan_req req = {
		.vid = __cpu_to_le16(vid),
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_VLAN_DELETE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_vlan_port_set(struct prestera_port *port, u16 vid,
			      bool is_member, bool untagged)
{
	struct prestera_msg_vlan_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.vid = __cpu_to_le16(vid),
		.is_member = is_member,
		.is_tagged = !untagged,
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_VLAN_PORT_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_vlan_port_vid_set(struct prestera_port *port, u16 vid)
{
	struct prestera_msg_vlan_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.vid = __cpu_to_le16(vid),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_VLAN_PVID_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_vlan_port_stp_set(struct prestera_port *port, u16 vid, u8 state)
{
	struct prestera_msg_stp_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.vid = __cpu_to_le16(vid),
		.state = state,
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_STP_PORT_SET,
			    &req.cmd, sizeof(req));
}

int prestera_hw_fdb_add(struct prestera_port *port, const unsigned char *mac,
			u16 vid, bool dynamic)
{
	struct prestera_msg_fdb_req req = {
		.dest = {
			.dev = __cpu_to_le32(port->dev_id),
			.port = __cpu_to_le32(port->hw_id),
		},
		.vid = __cpu_to_le16(vid),
		.dynamic = dynamic,
	};

	ether_addr_copy(req.mac, mac);

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_FDB_ADD,
			    &req.cmd, sizeof(req));
}

int prestera_hw_fdb_del(struct prestera_port *port, const unsigned char *mac,
			u16 vid)
{
	struct prestera_msg_fdb_req req = {
		.dest = {
			.dev = __cpu_to_le32(port->dev_id),
			.port = __cpu_to_le32(port->hw_id),
		},
		.vid = __cpu_to_le16(vid),
	};

	ether_addr_copy(req.mac, mac);

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_FDB_DELETE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_lag_fdb_add(struct prestera_switch *sw, u16 lag_id,
			    const unsigned char *mac, u16 vid, bool dynamic)
{
	struct prestera_msg_fdb_req req = {
		.dest_type = PRESTERA_HW_FDB_ENTRY_TYPE_LAG,
		.dest = {
			.lag_id = __cpu_to_le16(lag_id),
		},
		.vid = __cpu_to_le16(vid),
		.dynamic = dynamic,
	};

	ether_addr_copy(req.mac, mac);

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_FDB_ADD,
			    &req.cmd, sizeof(req));
}

int prestera_hw_lag_fdb_del(struct prestera_switch *sw, u16 lag_id,
			    const unsigned char *mac, u16 vid)
{
	struct prestera_msg_fdb_req req = {
		.dest_type = PRESTERA_HW_FDB_ENTRY_TYPE_LAG,
		.dest = {
			.lag_id = __cpu_to_le16(lag_id),
		},
		.vid = __cpu_to_le16(vid),
	};

	ether_addr_copy(req.mac, mac);

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_FDB_DELETE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_fdb_flush_port(struct prestera_port *port, u32 mode)
{
	struct prestera_msg_fdb_req req = {
		.dest = {
			.dev = __cpu_to_le32(port->dev_id),
			.port = __cpu_to_le32(port->hw_id),
		},
		.flush_mode = __cpu_to_le32(mode),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_FDB_FLUSH_PORT,
			    &req.cmd, sizeof(req));
}

int prestera_hw_fdb_flush_vlan(struct prestera_switch *sw, u16 vid, u32 mode)
{
	struct prestera_msg_fdb_req req = {
		.vid = __cpu_to_le16(vid),
		.flush_mode = __cpu_to_le32(mode),
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_FDB_FLUSH_VLAN,
			    &req.cmd, sizeof(req));
}

int prestera_hw_fdb_flush_port_vlan(struct prestera_port *port, u16 vid,
				    u32 mode)
{
	struct prestera_msg_fdb_req req = {
		.dest = {
			.dev = __cpu_to_le32(port->dev_id),
			.port = __cpu_to_le32(port->hw_id),
		},
		.vid = __cpu_to_le16(vid),
		.flush_mode = __cpu_to_le32(mode),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_FDB_FLUSH_PORT_VLAN,
			    &req.cmd, sizeof(req));
}

int prestera_hw_fdb_flush_lag(struct prestera_switch *sw, u16 lag_id,
			      u32 mode)
{
	struct prestera_msg_fdb_req req = {
		.dest_type = PRESTERA_HW_FDB_ENTRY_TYPE_LAG,
		.dest = {
			.lag_id = __cpu_to_le16(lag_id),
		},
		.flush_mode = __cpu_to_le32(mode),
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_FDB_FLUSH_PORT,
			    &req.cmd, sizeof(req));
}

int prestera_hw_fdb_flush_lag_vlan(struct prestera_switch *sw,
				   u16 lag_id, u16 vid, u32 mode)
{
	struct prestera_msg_fdb_req req = {
		.dest_type = PRESTERA_HW_FDB_ENTRY_TYPE_LAG,
		.dest = {
			.lag_id = __cpu_to_le16(lag_id),
		},
		.vid = __cpu_to_le16(vid),
		.flush_mode = __cpu_to_le32(mode),
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_FDB_FLUSH_PORT_VLAN,
			    &req.cmd, sizeof(req));
}

int prestera_hw_bridge_create(struct prestera_switch *sw, u16 *bridge_id)
{
	struct prestera_msg_bridge_resp resp;
	struct prestera_msg_bridge_req req;
	int err;

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_BRIDGE_CREATE,
			       &req.cmd, sizeof(req),
			       &resp.ret, sizeof(resp));
	if (err)
		return err;

	*bridge_id = __le16_to_cpu(resp.bridge);

	return 0;
}

int prestera_hw_bridge_delete(struct prestera_switch *sw, u16 bridge_id)
{
	struct prestera_msg_bridge_req req = {
		.bridge = __cpu_to_le16(bridge_id),
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_BRIDGE_DELETE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_bridge_port_add(struct prestera_port *port, u16 bridge_id)
{
	struct prestera_msg_bridge_req req = {
		.bridge = __cpu_to_le16(bridge_id),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_BRIDGE_PORT_ADD,
			    &req.cmd, sizeof(req));
}

int prestera_hw_bridge_port_delete(struct prestera_port *port, u16 bridge_id)
{
	struct prestera_msg_bridge_req req = {
		.bridge = __cpu_to_le16(bridge_id),
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_BRIDGE_PORT_DELETE,
			    &req.cmd, sizeof(req));
}

static int prestera_iface_to_msg(struct prestera_iface *iface,
				 struct prestera_msg_iface *msg_if)
{
	switch (iface->type) {
	case PRESTERA_IF_PORT_E:
	case PRESTERA_IF_VID_E:
		msg_if->port = __cpu_to_le32(iface->dev_port.port_num);
		msg_if->dev = __cpu_to_le32(iface->dev_port.hw_dev_num);
		break;
	case PRESTERA_IF_LAG_E:
		msg_if->lag_id = __cpu_to_le16(iface->lag_id);
		break;
	default:
		return -EOPNOTSUPP;
	}

	msg_if->vr_id = __cpu_to_le16(iface->vr_id);
	msg_if->vid = __cpu_to_le16(iface->vlan_id);
	msg_if->type = iface->type;
	return 0;
}

int prestera_hw_rif_create(struct prestera_switch *sw,
			   struct prestera_iface *iif, u8 *mac, u16 *rif_id)
{
	struct prestera_msg_rif_resp resp;
	struct prestera_msg_rif_req req;
	int err;

	memcpy(req.mac, mac, ETH_ALEN);

	err = prestera_iface_to_msg(iif, &req.iif);
	if (err)
		return err;

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_ROUTER_RIF_CREATE,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*rif_id = __le16_to_cpu(resp.rif_id);
	return err;
}

int prestera_hw_rif_delete(struct prestera_switch *sw, u16 rif_id,
			   struct prestera_iface *iif)
{
	struct prestera_msg_rif_req req = {
		.rif_id = __cpu_to_le16(rif_id),
	};
	int err;

	err = prestera_iface_to_msg(iif, &req.iif);
	if (err)
		return err;

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_ROUTER_RIF_DELETE, &req.cmd,
			    sizeof(req));
}

int prestera_hw_vr_create(struct prestera_switch *sw, u16 *vr_id)
{
	struct prestera_msg_vr_resp resp;
	struct prestera_msg_vr_req req;
	int err;

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_ROUTER_VR_CREATE,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*vr_id = __le16_to_cpu(resp.vr_id);
	return err;
}

int prestera_hw_vr_delete(struct prestera_switch *sw, u16 vr_id)
{
	struct prestera_msg_vr_req req = {
		.vr_id = __cpu_to_le16(vr_id),
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_ROUTER_VR_DELETE, &req.cmd,
			    sizeof(req));
}

int prestera_hw_lpm_add(struct prestera_switch *sw, u16 vr_id,
			__be32 dst, u32 dst_len, u32 grp_id)
{
	struct prestera_msg_lpm_req req = {
		.dst_len = __cpu_to_le32(dst_len),
		.vr_id = __cpu_to_le16(vr_id),
		.grp_id = __cpu_to_le32(grp_id),
		.dst.u.ipv4 = dst
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_ROUTER_LPM_ADD, &req.cmd,
			    sizeof(req));
}

int prestera_hw_lpm_del(struct prestera_switch *sw, u16 vr_id,
			__be32 dst, u32 dst_len)
{
	struct prestera_msg_lpm_req req = {
		.dst_len = __cpu_to_le32(dst_len),
		.vr_id = __cpu_to_le16(vr_id),
		.dst.u.ipv4 = dst
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_ROUTER_LPM_DELETE, &req.cmd,
			    sizeof(req));
}

int prestera_hw_rxtx_init(struct prestera_switch *sw,
			  struct prestera_rxtx_params *params)
{
	struct prestera_msg_rxtx_resp resp;
	struct prestera_msg_rxtx_req req;
	int err;

	req.use_sdma = params->use_sdma;

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_RXTX_INIT,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	params->map_addr = __le32_to_cpu(resp.map_addr);

	return 0;
}

int prestera_hw_lag_member_add(struct prestera_port *port, u16 lag_id)
{
	struct prestera_msg_lag_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.lag_id = __cpu_to_le16(lag_id),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_LAG_MEMBER_ADD,
			    &req.cmd, sizeof(req));
}

int prestera_hw_lag_member_del(struct prestera_port *port, u16 lag_id)
{
	struct prestera_msg_lag_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.lag_id = __cpu_to_le16(lag_id),
	};

	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_LAG_MEMBER_DELETE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_lag_member_enable(struct prestera_port *port, u16 lag_id,
				  bool enable)
{
	struct prestera_msg_lag_req req = {
		.port = __cpu_to_le32(port->hw_id),
		.dev = __cpu_to_le32(port->dev_id),
		.lag_id = __cpu_to_le16(lag_id),
	};
	u32 cmd;

	cmd = enable ? PRESTERA_CMD_TYPE_LAG_MEMBER_ENABLE :
			PRESTERA_CMD_TYPE_LAG_MEMBER_DISABLE;

	return prestera_cmd(port->sw, cmd, &req.cmd, sizeof(req));
}

int
prestera_hw_cpu_code_counters_get(struct prestera_switch *sw, u8 code,
				  enum prestera_hw_cpu_code_cnt_t counter_type,
				  u64 *packet_count)
{
	struct prestera_msg_cpu_code_counter_req req = {
		.counter_type = counter_type,
		.code = code,
	};
	struct mvsw_msg_cpu_code_counter_ret resp;
	int err;

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_CPU_CODE_COUNTERS_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*packet_count = __le64_to_cpu(resp.packet_count);

	return 0;
}

int prestera_hw_event_handler_register(struct prestera_switch *sw,
				       enum prestera_event_type type,
				       prestera_event_cb_t fn,
				       void *arg)
{
	struct prestera_fw_event_handler *eh;

	eh = __find_event_handler(sw, type);
	if (eh)
		return -EEXIST;

	eh = kmalloc(sizeof(*eh), GFP_KERNEL);
	if (!eh)
		return -ENOMEM;

	eh->type = type;
	eh->func = fn;
	eh->arg = arg;

	INIT_LIST_HEAD(&eh->list);

	list_add_rcu(&eh->list, &sw->event_handlers);

	return 0;
}

void prestera_hw_event_handler_unregister(struct prestera_switch *sw,
					  enum prestera_event_type type,
					  prestera_event_cb_t fn)
{
	struct prestera_fw_event_handler *eh;

	eh = __find_event_handler(sw, type);
	if (!eh)
		return;

	list_del_rcu(&eh->list);
	kfree_rcu(eh, rcu);
}

int prestera_hw_counter_trigger(struct prestera_switch *sw, u32 block_id)
{
	struct prestera_msg_counter_req req = {
		.block_id = __cpu_to_le32(block_id)
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_COUNTER_TRIGGER,
			    &req.cmd, sizeof(req));
}

int prestera_hw_counter_abort(struct prestera_switch *sw)
{
	struct prestera_msg_counter_req req;

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_COUNTER_ABORT,
			    &req.cmd, sizeof(req));
}

int prestera_hw_counters_get(struct prestera_switch *sw, u32 idx,
			     u32 *len, bool *done,
			     struct prestera_counter_stats *stats)
{
	struct prestera_msg_counter_resp *resp;
	struct prestera_msg_counter_req req = {
		.block_id = __cpu_to_le32(idx),
		.num_counters = __cpu_to_le32(*len),
	};
	size_t size = struct_size(resp, stats, *len);
	int err, i;

	resp = kmalloc(size, GFP_KERNEL);
	if (!resp)
		return -ENOMEM;

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_COUNTER_GET,
			       &req.cmd, sizeof(req), &resp->ret, size);
	if (err)
		goto free_buff;

	for (i = 0; i < __le32_to_cpu(resp->num_counters); i++) {
		stats[i].packets += __le64_to_cpu(resp->stats[i].packets);
		stats[i].bytes += __le64_to_cpu(resp->stats[i].bytes);
	}

	*len = __le32_to_cpu(resp->num_counters);
	*done = __le32_to_cpu(resp->done);

free_buff:
	kfree(resp);
	return err;
}

int prestera_hw_counter_block_get(struct prestera_switch *sw,
				  u32 client, u32 *block_id, u32 *offset,
				  u32 *num_counters)
{
	struct prestera_msg_counter_resp resp;
	struct prestera_msg_counter_req req = {
		.client = __cpu_to_le32(client)
	};
	int err;

	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_COUNTER_BLOCK_GET,
			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
	if (err)
		return err;

	*block_id = __le32_to_cpu(resp.block_id);
	*offset = __le32_to_cpu(resp.offset);
	*num_counters = __le32_to_cpu(resp.num_counters);

	return 0;
}

int prestera_hw_counter_block_release(struct prestera_switch *sw,
				      u32 block_id)
{
	struct prestera_msg_counter_req req = {
		.block_id = __cpu_to_le32(block_id)
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_COUNTER_BLOCK_RELEASE,
			    &req.cmd, sizeof(req));
}

int prestera_hw_counter_clear(struct prestera_switch *sw, u32 block_id,
			      u32 counter_id)
{
	struct prestera_msg_counter_req req = {
		.block_id = __cpu_to_le32(block_id),
		.num_counters = __cpu_to_le32(counter_id)
	};

	return prestera_cmd(sw, PRESTERA_CMD_TYPE_COUNTER_CLEAR,
			    &req.cmd, sizeof(req));
}