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linux/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
Peng Li 4671042f1e net: hns3: add match_id to check mailbox response from PF to VF 
When VF need response from PF, VF will wait (1us - 1s) to receive
the response, or it will wait timeout and the VF action fails.
If VF do not receive response in 1st action because timeout,
the 2nd action may receive response for the 1st action, and get
incorrect response data.VF must reciveve the right response from
PF,or it will cause unexpected error.

This patch adds match_id to check mailbox response from PF to VF,
to make sure VF get the right response:
1. The message sent from VF was labelled with match_id which was a
unique 16-bit non-zero value.
2. The response sent from PF will label with match_id which got from
the request.
3. The VF uses the match_id to match request and response message.

This scheme depends on PF driver supports match_id, if PF driver doesn't
support then VF will uses the original scheme.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-07-20 13:12:49 +02:00

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/* SPDX-License-Identifier: GPL-2.0+ */
/* Copyright (c) 2016-2017 Hisilicon Limited. */
#ifndef __HCLGE_MBX_H
#define __HCLGE_MBX_H
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/types.h>
enum HCLGE_MBX_OPCODE {
HCLGE_MBX_RESET = 0x01, /* (VF -> PF) assert reset */
HCLGE_MBX_ASSERTING_RESET, /* (PF -> VF) PF is asserting reset*/
HCLGE_MBX_SET_UNICAST, /* (VF -> PF) set UC addr */
HCLGE_MBX_SET_MULTICAST, /* (VF -> PF) set MC addr */
HCLGE_MBX_SET_VLAN, /* (VF -> PF) set VLAN */
HCLGE_MBX_MAP_RING_TO_VECTOR, /* (VF -> PF) map ring-to-vector */
HCLGE_MBX_UNMAP_RING_TO_VECTOR, /* (VF -> PF) unamp ring-to-vector */
HCLGE_MBX_SET_PROMISC_MODE, /* (VF -> PF) set promiscuous mode */
HCLGE_MBX_SET_MACVLAN, /* (VF -> PF) set unicast filter */
HCLGE_MBX_API_NEGOTIATE, /* (VF -> PF) negotiate API version */
HCLGE_MBX_GET_QINFO, /* (VF -> PF) get queue config */
HCLGE_MBX_GET_QDEPTH, /* (VF -> PF) get queue depth */
HCLGE_MBX_GET_BASIC_INFO, /* (VF -> PF) get basic info */
HCLGE_MBX_GET_RETA, /* (VF -> PF) get RETA */
HCLGE_MBX_GET_RSS_KEY, /* (VF -> PF) get RSS key */
HCLGE_MBX_GET_MAC_ADDR, /* (VF -> PF) get MAC addr */
HCLGE_MBX_PF_VF_RESP, /* (PF -> VF) generate response to VF */
HCLGE_MBX_GET_BDNUM, /* (VF -> PF) get BD num */
HCLGE_MBX_GET_BUFSIZE, /* (VF -> PF) get buffer size */
HCLGE_MBX_GET_STREAMID, /* (VF -> PF) get stream id */
HCLGE_MBX_SET_AESTART, /* (VF -> PF) start ae */
HCLGE_MBX_SET_TSOSTATS, /* (VF -> PF) get tso stats */
HCLGE_MBX_LINK_STAT_CHANGE, /* (PF -> VF) link status has changed */
HCLGE_MBX_GET_BASE_CONFIG, /* (VF -> PF) get config */
HCLGE_MBX_BIND_FUNC_QUEUE, /* (VF -> PF) bind function and queue */
HCLGE_MBX_GET_LINK_STATUS, /* (VF -> PF) get link status */
HCLGE_MBX_QUEUE_RESET, /* (VF -> PF) reset queue */
HCLGE_MBX_KEEP_ALIVE, /* (VF -> PF) send keep alive cmd */
HCLGE_MBX_SET_ALIVE, /* (VF -> PF) set alive state */
HCLGE_MBX_SET_MTU, /* (VF -> PF) set mtu */
HCLGE_MBX_GET_QID_IN_PF, /* (VF -> PF) get queue id in pf */
HCLGE_MBX_LINK_STAT_MODE, /* (PF -> VF) link mode has changed */
HCLGE_MBX_GET_LINK_MODE, /* (VF -> PF) get the link mode of pf */
HCLGE_MBX_PUSH_VLAN_INFO, /* (PF -> VF) push port base vlan */
HCLGE_MBX_GET_MEDIA_TYPE, /* (VF -> PF) get media type */
HCLGE_MBX_PUSH_PROMISC_INFO, /* (PF -> VF) push vf promisc info */
HCLGE_MBX_VF_UNINIT, /* (VF -> PF) vf is unintializing */
HCLGE_MBX_HANDLE_VF_TBL, /* (VF -> PF) store/clear hw table */
HCLGE_MBX_GET_VF_FLR_STATUS = 200, /* (M7 -> PF) get vf flr status */
HCLGE_MBX_PUSH_LINK_STATUS, /* (M7 -> PF) get port link status */
HCLGE_MBX_NCSI_ERROR, /* (M7 -> PF) receive a NCSI error */
};
/* below are per-VF mac-vlan subcodes */
enum hclge_mbx_mac_vlan_subcode {
HCLGE_MBX_MAC_VLAN_UC_MODIFY = 0, /* modify UC mac addr */
HCLGE_MBX_MAC_VLAN_UC_ADD, /* add a new UC mac addr */
HCLGE_MBX_MAC_VLAN_UC_REMOVE, /* remove a new UC mac addr */
HCLGE_MBX_MAC_VLAN_MC_MODIFY, /* modify MC mac addr */
HCLGE_MBX_MAC_VLAN_MC_ADD, /* add new MC mac addr */
HCLGE_MBX_MAC_VLAN_MC_REMOVE, /* remove MC mac addr */
};
/* below are per-VF vlan cfg subcodes */
enum hclge_mbx_vlan_cfg_subcode {
HCLGE_MBX_VLAN_FILTER = 0, /* set vlan filter */
HCLGE_MBX_VLAN_TX_OFF_CFG, /* set tx side vlan offload */
HCLGE_MBX_VLAN_RX_OFF_CFG, /* set rx side vlan offload */
HCLGE_MBX_PORT_BASE_VLAN_CFG, /* set port based vlan configuration */
HCLGE_MBX_GET_PORT_BASE_VLAN_STATE, /* get port based vlan state */
HCLGE_MBX_ENABLE_VLAN_FILTER,
};
enum hclge_mbx_tbl_cfg_subcode {
HCLGE_MBX_VPORT_LIST_CLEAR,
};
#define HCLGE_MBX_MAX_MSG_SIZE 14
#define HCLGE_MBX_MAX_RESP_DATA_SIZE 8U
#define HCLGE_MBX_MAX_RING_CHAIN_PARAM_NUM 4
struct hclge_ring_chain_param {
u8 ring_type;
u8 tqp_index;
u8 int_gl_index;
};
struct hclge_basic_info {
u8 hw_tc_map;
u8 rsv;
u16 mbx_api_version;
u32 pf_caps;
};
struct hclgevf_mbx_resp_status {
struct mutex mbx_mutex; /* protects against contending sync cmd resp */
u32 origin_mbx_msg;
bool received_resp;
int resp_status;
u16 match_id;
u8 additional_info[HCLGE_MBX_MAX_RESP_DATA_SIZE];
};
struct hclge_respond_to_vf_msg {
int status;
u8 data[HCLGE_MBX_MAX_RESP_DATA_SIZE];
u16 len;
};
struct hclge_vf_to_pf_msg {
u8 code;
union {
struct {
u8 subcode;
u8 data[HCLGE_MBX_MAX_MSG_SIZE];
};
struct {
u8 en_bc;
u8 en_uc;
u8 en_mc;
u8 en_limit_promisc;
};
struct {
u8 vector_id;
u8 ring_num;
struct hclge_ring_chain_param
param[HCLGE_MBX_MAX_RING_CHAIN_PARAM_NUM];
};
};
};
struct hclge_pf_to_vf_msg {
u16 code;
u16 vf_mbx_msg_code;
u16 vf_mbx_msg_subcode;
u16 resp_status;
u8 resp_data[HCLGE_MBX_MAX_RESP_DATA_SIZE];
};
struct hclge_mbx_vf_to_pf_cmd {
u8 rsv;
u8 mbx_src_vfid; /* Auto filled by IMP */
u8 mbx_need_resp;
u8 rsv1[1];
u8 msg_len;
u8 rsv2;
u16 match_id;
struct hclge_vf_to_pf_msg msg;
};
#define HCLGE_MBX_NEED_RESP_B 0
struct hclge_mbx_pf_to_vf_cmd {
u8 dest_vfid;
u8 rsv[3];
u8 msg_len;
u8 rsv1;
u16 match_id;
struct hclge_pf_to_vf_msg msg;
};
struct hclge_vf_rst_cmd {
u8 dest_vfid;
u8 vf_rst;
u8 rsv[22];
};
/* used by VF to store the received Async responses from PF */
struct hclgevf_mbx_arq_ring {
#define HCLGE_MBX_MAX_ARQ_MSG_SIZE 8
#define HCLGE_MBX_MAX_ARQ_MSG_NUM 1024
struct hclgevf_dev *hdev;
u32 head;
u32 tail;
atomic_t count;
u16 msg_q[HCLGE_MBX_MAX_ARQ_MSG_NUM][HCLGE_MBX_MAX_ARQ_MSG_SIZE];
};
#define hclge_mbx_ring_ptr_move_crq(crq) \
(crq->next_to_use = (crq->next_to_use + 1) % crq->desc_num)
#define hclge_mbx_tail_ptr_move_arq(arq) \
(arq.tail = (arq.tail + 1) % HCLGE_MBX_MAX_ARQ_MSG_NUM)
#define hclge_mbx_head_ptr_move_arq(arq) \
(arq.head = (arq.head + 1) % HCLGE_MBX_MAX_ARQ_MSG_NUM)
/* PF immediately push link status to VFs when link status changed */
#define HCLGE_MBX_PUSH_LINK_STATUS_EN BIT(0)
#endif
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