/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018-2019 Hisilicon Limited.
 */

#ifndef _HNS3_MBX_H_
#define _HNS3_MBX_H_

#define HNS3_MBX_VF_MSG_DATA_NUM	16

enum HNS3_MBX_OPCODE {
	HNS3_MBX_RESET = 0x01,          /* (VF -> PF) assert reset */
	HNS3_MBX_ASSERTING_RESET,       /* (PF -> VF) PF is asserting reset */
	HNS3_MBX_SET_UNICAST,           /* (VF -> PF) set UC addr */
	HNS3_MBX_SET_MULTICAST,         /* (VF -> PF) set MC addr */
	HNS3_MBX_SET_VLAN,              /* (VF -> PF) set VLAN */
	HNS3_MBX_MAP_RING_TO_VECTOR,    /* (VF -> PF) map ring-to-vector */
	HNS3_MBX_UNMAP_RING_TO_VECTOR,  /* (VF -> PF) unamp ring-to-vector */
	HNS3_MBX_SET_PROMISC_MODE,      /* (VF -> PF) set promiscuous mode */
	HNS3_MBX_SET_MACVLAN,           /* (VF -> PF) set unicast filter */
	HNS3_MBX_API_NEGOTIATE,         /* (VF -> PF) negotiate API version */
	HNS3_MBX_GET_QINFO,             /* (VF -> PF) get queue config */
	HNS3_MBX_GET_QDEPTH,            /* (VF -> PF) get queue depth */
	HNS3_MBX_GET_TCINFO,            /* (VF -> PF) get TC config */
	HNS3_MBX_GET_RETA,              /* (VF -> PF) get RETA */
	HNS3_MBX_GET_RSS_KEY,           /* (VF -> PF) get RSS key */
	HNS3_MBX_GET_MAC_ADDR,          /* (VF -> PF) get MAC addr */
	HNS3_MBX_PF_VF_RESP,            /* (PF -> VF) generate respone to VF */
	HNS3_MBX_GET_BDNUM,             /* (VF -> PF) get BD num */
	HNS3_MBX_GET_BUFSIZE,           /* (VF -> PF) get buffer size */
	HNS3_MBX_GET_STREAMID,          /* (VF -> PF) get stream id */
	HNS3_MBX_SET_AESTART,           /* (VF -> PF) start ae */
	HNS3_MBX_SET_TSOSTATS,          /* (VF -> PF) get tso stats */
	HNS3_MBX_LINK_STAT_CHANGE,      /* (PF -> VF) link status has changed */
	HNS3_MBX_GET_BASE_CONFIG,       /* (VF -> PF) get config */
	HNS3_MBX_BIND_FUNC_QUEUE,       /* (VF -> PF) bind function and queue */
	HNS3_MBX_GET_LINK_STATUS,       /* (VF -> PF) get link status */
	HNS3_MBX_QUEUE_RESET,           /* (VF -> PF) reset queue */
	HNS3_MBX_KEEP_ALIVE,            /* (VF -> PF) send keep alive cmd */
	HNS3_MBX_SET_ALIVE,             /* (VF -> PF) set alive state */
	HNS3_MBX_SET_MTU,               /* (VF -> PF) set mtu */
	HNS3_MBX_GET_QID_IN_PF,         /* (VF -> PF) get queue id in pf */
};

/* below are per-VF mac-vlan subcodes */
enum hns3_mbx_mac_vlan_subcode {
	HNS3_MBX_MAC_VLAN_UC_MODIFY = 0,        /* modify UC mac addr */
	HNS3_MBX_MAC_VLAN_UC_ADD,               /* add a new UC mac addr */
	HNS3_MBX_MAC_VLAN_UC_REMOVE,            /* remove a new UC mac addr */
	HNS3_MBX_MAC_VLAN_MC_MODIFY,            /* modify MC mac addr */
	HNS3_MBX_MAC_VLAN_MC_ADD,               /* add new MC mac addr */
	HNS3_MBX_MAC_VLAN_MC_REMOVE,            /* remove MC mac addr */
};

/* below are per-VF vlan cfg subcodes */
enum hns3_mbx_vlan_cfg_subcode {
	HNS3_MBX_VLAN_FILTER = 0,               /* set vlan filter */
	HNS3_MBX_VLAN_TX_OFF_CFG,               /* set tx side vlan offload */
	HNS3_MBX_VLAN_RX_OFF_CFG,               /* set rx side vlan offload */
};

#define HNS3_MBX_MAX_MSG_SIZE	16
#define HNS3_MBX_MAX_RESP_DATA_SIZE	8
#define HNS3_MBX_RING_MAP_BASIC_MSG_NUM	3
#define HNS3_MBX_RING_NODE_VARIABLE_NUM	3

struct hns3_mbx_resp_status {
	rte_spinlock_t lock; /* protects against contending sync cmd resp */
	uint32_t req_msg_data;
	uint32_t head;
	uint32_t tail;
	uint32_t lost;
	int resp_status;
	uint8_t additional_info[HNS3_MBX_MAX_RESP_DATA_SIZE];
};

struct errno_respcode_map {
	uint16_t resp_code;
	int err_no;
};

#define HNS3_MBX_NEED_RESP_BIT                BIT(0)

struct hns3_mbx_vf_to_pf_cmd {
	uint8_t rsv;
	uint8_t mbx_src_vfid;                   /* Auto filled by IMP */
	uint8_t mbx_need_resp;
	uint8_t rsv1;
	uint8_t msg_len;
	uint8_t rsv2[3];
	uint8_t msg[HNS3_MBX_MAX_MSG_SIZE];
};

struct hns3_mbx_pf_to_vf_cmd {
	uint8_t dest_vfid;
	uint8_t rsv[3];
	uint8_t msg_len;
	uint8_t rsv1[3];
	uint16_t msg[8];
};

struct hns3_vf_rst_cmd {
	uint8_t dest_vfid;
	uint8_t vf_rst;
	uint8_t rsv[22];
};

struct hns3_pf_rst_done_cmd {
	uint8_t pf_rst_done;
	uint8_t rsv[23];
};

#define HNS3_PF_RESET_DONE_BIT		BIT(0)

/* used by VF to store the received Async responses from PF */
struct hns3_mbx_arq_ring {
#define HNS3_MBX_MAX_ARQ_MSG_SIZE	8
#define HNS3_MBX_MAX_ARQ_MSG_NUM	1024
	uint32_t head;
	uint32_t tail;
	uint32_t count;
	uint16_t msg_q[HNS3_MBX_MAX_ARQ_MSG_NUM][HNS3_MBX_MAX_ARQ_MSG_SIZE];
};

#define hns3_mbx_ring_ptr_move_crq(crq) \
	((crq)->next_to_use = ((crq)->next_to_use + 1) % (crq)->desc_num)
#define hns3_mbx_tail_ptr_move_arq(arq) \
	((arq).tail = ((arq).tail + 1) % HNS3_MBX_MAX_ARQ_MSG_SIZE)
#define hns3_mbx_head_ptr_move_arq(arq) \
		((arq).head = ((arq).head + 1) % HNS3_MBX_MAX_ARQ_MSG_SIZE)

struct hns3_hw;
void hns3_dev_handle_mbx_msg(struct hns3_hw *hw);
int hns3_send_mbx_msg(struct hns3_hw *hw, uint16_t code, uint16_t subcode,
		      const uint8_t *msg_data, uint8_t msg_len, bool need_resp,
		      uint8_t *resp_data, uint16_t resp_len);
#endif /* _HNS3_MBX_H_ */
