fae9b062b0
The link fails code should be parsed using the structure
hns3_mbx_vf_to_pf_cmd, else it will parse fail.
Fixes: 109e4dd1bd
("net/hns3: get link state change through mailbox")
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
556 lines
15 KiB
C
556 lines
15 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2018-2021 HiSilicon Limited.
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*/
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#include <ethdev_driver.h>
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#include <rte_io.h>
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#include "hns3_ethdev.h"
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#include "hns3_regs.h"
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#include "hns3_logs.h"
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#include "hns3_intr.h"
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#include "hns3_rxtx.h"
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#define HNS3_CMD_CODE_OFFSET 2
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static const struct errno_respcode_map err_code_map[] = {
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{0, 0},
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{1, -EPERM},
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{2, -ENOENT},
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{5, -EIO},
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{11, -EAGAIN},
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{12, -ENOMEM},
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{16, -EBUSY},
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{22, -EINVAL},
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{28, -ENOSPC},
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{95, -EOPNOTSUPP},
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};
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static int
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hns3_resp_to_errno(uint16_t resp_code)
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{
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uint32_t i, num;
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num = sizeof(err_code_map) / sizeof(struct errno_respcode_map);
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for (i = 0; i < num; i++) {
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if (err_code_map[i].resp_code == resp_code)
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return err_code_map[i].err_no;
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}
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return -EIO;
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}
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static void
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hns3_mbx_proc_timeout(struct hns3_hw *hw, uint16_t code, uint16_t subcode)
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{
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if (hw->mbx_resp.matching_scheme ==
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HNS3_MBX_RESP_MATCHING_SCHEME_OF_ORIGINAL) {
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hw->mbx_resp.lost++;
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hns3_err(hw,
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"VF could not get mbx(%u,%u) head(%u) tail(%u) "
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"lost(%u) from PF",
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code, subcode, hw->mbx_resp.head, hw->mbx_resp.tail,
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hw->mbx_resp.lost);
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return;
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}
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hns3_err(hw, "VF could not get mbx(%u,%u) from PF", code, subcode);
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}
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static int
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hns3_get_mbx_resp(struct hns3_hw *hw, uint16_t code, uint16_t subcode,
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uint8_t *resp_data, uint16_t resp_len)
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{
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#define HNS3_MAX_RETRY_US 500000
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#define HNS3_WAIT_RESP_US 100
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struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
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struct hns3_mbx_resp_status *mbx_resp;
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uint32_t wait_time = 0;
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bool received;
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if (resp_len > HNS3_MBX_MAX_RESP_DATA_SIZE) {
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hns3_err(hw, "VF mbx response len(=%u) exceeds maximum(=%d)",
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resp_len, HNS3_MBX_MAX_RESP_DATA_SIZE);
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return -EINVAL;
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}
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while (wait_time < HNS3_MAX_RETRY_US) {
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if (__atomic_load_n(&hw->reset.disable_cmd, __ATOMIC_RELAXED)) {
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hns3_err(hw, "Don't wait for mbx respone because of "
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"disable_cmd");
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return -EBUSY;
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}
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if (is_reset_pending(hns)) {
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hw->mbx_resp.req_msg_data = 0;
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hns3_err(hw, "Don't wait for mbx respone because of "
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"reset pending");
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return -EIO;
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}
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hns3_dev_handle_mbx_msg(hw);
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rte_delay_us(HNS3_WAIT_RESP_US);
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if (hw->mbx_resp.matching_scheme ==
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HNS3_MBX_RESP_MATCHING_SCHEME_OF_ORIGINAL)
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received = (hw->mbx_resp.head ==
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hw->mbx_resp.tail + hw->mbx_resp.lost);
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else
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received = hw->mbx_resp.received_match_resp;
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if (received)
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break;
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wait_time += HNS3_WAIT_RESP_US;
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}
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hw->mbx_resp.req_msg_data = 0;
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if (wait_time >= HNS3_MAX_RETRY_US) {
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hns3_mbx_proc_timeout(hw, code, subcode);
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return -ETIME;
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}
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rte_io_rmb();
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mbx_resp = &hw->mbx_resp;
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if (mbx_resp->resp_status)
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return mbx_resp->resp_status;
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if (resp_data)
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memcpy(resp_data, &mbx_resp->additional_info[0], resp_len);
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return 0;
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}
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static void
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hns3_mbx_prepare_resp(struct hns3_hw *hw, uint16_t code, uint16_t subcode)
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{
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/*
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* Init both matching scheme fields because we may not know the exact
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* scheme will be used when in the initial phase.
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*
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* Also, there are OK to init both matching scheme fields even though
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* we get the exact scheme which is used.
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*/
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hw->mbx_resp.req_msg_data = (uint32_t)code << 16 | subcode;
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hw->mbx_resp.head++;
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/* Update match_id and ensure the value of match_id is not zero */
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hw->mbx_resp.match_id++;
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if (hw->mbx_resp.match_id == 0)
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hw->mbx_resp.match_id = 1;
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hw->mbx_resp.received_match_resp = false;
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hw->mbx_resp.resp_status = 0;
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memset(hw->mbx_resp.additional_info, 0, HNS3_MBX_MAX_RESP_DATA_SIZE);
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}
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int
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hns3_send_mbx_msg(struct hns3_hw *hw, uint16_t code, uint16_t subcode,
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const uint8_t *msg_data, uint8_t msg_len, bool need_resp,
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uint8_t *resp_data, uint16_t resp_len)
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{
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struct hns3_mbx_vf_to_pf_cmd *req;
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struct hns3_cmd_desc desc;
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bool is_ring_vector_msg;
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int offset;
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int ret;
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req = (struct hns3_mbx_vf_to_pf_cmd *)desc.data;
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/* first two bytes are reserved for code & subcode */
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if (msg_len > (HNS3_MBX_MAX_MSG_SIZE - HNS3_CMD_CODE_OFFSET)) {
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hns3_err(hw,
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"VF send mbx msg fail, msg len %u exceeds max payload len %d",
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msg_len, HNS3_MBX_MAX_MSG_SIZE - HNS3_CMD_CODE_OFFSET);
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return -EINVAL;
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}
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hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_MBX_VF_TO_PF, false);
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req->msg[0] = code;
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is_ring_vector_msg = (code == HNS3_MBX_MAP_RING_TO_VECTOR) ||
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(code == HNS3_MBX_UNMAP_RING_TO_VECTOR) ||
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(code == HNS3_MBX_GET_RING_VECTOR_MAP);
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if (!is_ring_vector_msg)
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req->msg[1] = subcode;
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if (msg_data) {
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offset = is_ring_vector_msg ? 1 : HNS3_CMD_CODE_OFFSET;
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memcpy(&req->msg[offset], msg_data, msg_len);
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}
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/* synchronous send */
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if (need_resp) {
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req->mbx_need_resp |= HNS3_MBX_NEED_RESP_BIT;
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rte_spinlock_lock(&hw->mbx_resp.lock);
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hns3_mbx_prepare_resp(hw, code, subcode);
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req->match_id = hw->mbx_resp.match_id;
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ret = hns3_cmd_send(hw, &desc, 1);
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if (ret) {
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hw->mbx_resp.head--;
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rte_spinlock_unlock(&hw->mbx_resp.lock);
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hns3_err(hw, "VF failed(=%d) to send mbx message to PF",
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ret);
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return ret;
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}
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ret = hns3_get_mbx_resp(hw, code, subcode, resp_data, resp_len);
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rte_spinlock_unlock(&hw->mbx_resp.lock);
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} else {
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/* asynchronous send */
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ret = hns3_cmd_send(hw, &desc, 1);
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if (ret) {
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hns3_err(hw, "VF failed(=%d) to send mbx message to PF",
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ret);
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return ret;
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}
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}
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return ret;
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}
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static bool
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hns3_cmd_crq_empty(struct hns3_hw *hw)
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{
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uint32_t tail = hns3_read_dev(hw, HNS3_CMDQ_RX_TAIL_REG);
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return tail == hw->cmq.crq.next_to_use;
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}
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static void
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hns3vf_handle_link_change_event(struct hns3_hw *hw,
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struct hns3_mbx_pf_to_vf_cmd *req)
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{
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uint8_t link_status, link_duplex;
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uint16_t *msg_q = req->msg;
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uint8_t support_push_lsc;
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uint32_t link_speed;
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memcpy(&link_speed, &msg_q[2], sizeof(link_speed));
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link_status = rte_le_to_cpu_16(msg_q[1]);
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link_duplex = (uint8_t)rte_le_to_cpu_16(msg_q[4]);
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hns3vf_update_link_status(hw, link_status, link_speed,
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link_duplex);
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support_push_lsc = (*(uint8_t *)&msg_q[5]) & 1u;
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hns3vf_update_push_lsc_cap(hw, support_push_lsc);
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}
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static void
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hns3_handle_asserting_reset(struct hns3_hw *hw,
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struct hns3_mbx_pf_to_vf_cmd *req)
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{
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enum hns3_reset_level reset_level;
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uint16_t *msg_q = req->msg;
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/*
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* PF has asserted reset hence VF should go in pending
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* state and poll for the hardware reset status till it
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* has been completely reset. After this stack should
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* eventually be re-initialized.
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*/
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reset_level = rte_le_to_cpu_16(msg_q[1]);
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hns3_atomic_set_bit(reset_level, &hw->reset.pending);
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hns3_warn(hw, "PF inform reset level %d", reset_level);
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hw->reset.stats.request_cnt++;
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hns3_schedule_reset(HNS3_DEV_HW_TO_ADAPTER(hw));
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}
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/*
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* Case1: receive response after timeout, req_msg_data
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* is 0, not equal resp_msg, do lost--
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* Case2: receive last response during new send_mbx_msg,
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* req_msg_data is different with resp_msg, let
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* lost--, continue to wait for response.
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*/
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static void
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hns3_update_resp_position(struct hns3_hw *hw, uint32_t resp_msg)
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{
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struct hns3_mbx_resp_status *resp = &hw->mbx_resp;
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uint32_t tail = resp->tail + 1;
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if (tail > resp->head)
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tail = resp->head;
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if (resp->req_msg_data != resp_msg) {
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if (resp->lost)
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resp->lost--;
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hns3_warn(hw, "Received a mismatched response req_msg(%x) "
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"resp_msg(%x) head(%u) tail(%u) lost(%u)",
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resp->req_msg_data, resp_msg, resp->head, tail,
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resp->lost);
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} else if (tail + resp->lost > resp->head) {
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resp->lost--;
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hns3_warn(hw, "Received a new response again resp_msg(%x) "
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"head(%u) tail(%u) lost(%u)", resp_msg,
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resp->head, tail, resp->lost);
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}
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rte_io_wmb();
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resp->tail = tail;
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}
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static void
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hns3_handle_mbx_response(struct hns3_hw *hw, struct hns3_mbx_pf_to_vf_cmd *req)
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{
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struct hns3_mbx_resp_status *resp = &hw->mbx_resp;
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uint32_t msg_data;
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if (req->match_id != 0) {
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/*
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* If match_id is not zero, it means PF support copy request's
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* match_id to its response. So VF could use the match_id
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* to match the request.
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*/
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if (resp->matching_scheme !=
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HNS3_MBX_RESP_MATCHING_SCHEME_OF_MATCH_ID) {
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resp->matching_scheme =
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HNS3_MBX_RESP_MATCHING_SCHEME_OF_MATCH_ID;
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hns3_info(hw, "detect mailbox support match id!");
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}
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if (req->match_id == resp->match_id) {
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resp->resp_status = hns3_resp_to_errno(req->msg[3]);
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memcpy(resp->additional_info, &req->msg[4],
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HNS3_MBX_MAX_RESP_DATA_SIZE);
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rte_io_wmb();
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resp->received_match_resp = true;
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}
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return;
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}
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/*
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* If the below instructions can be executed, it means PF does not
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* support copy request's match_id to its response. So VF follows the
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* original scheme to process.
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*/
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resp->resp_status = hns3_resp_to_errno(req->msg[3]);
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memcpy(resp->additional_info, &req->msg[4],
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HNS3_MBX_MAX_RESP_DATA_SIZE);
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msg_data = (uint32_t)req->msg[1] << 16 | req->msg[2];
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hns3_update_resp_position(hw, msg_data);
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}
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static void
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hns3_link_fail_parse(struct hns3_hw *hw, uint8_t link_fail_code)
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{
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switch (link_fail_code) {
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case HNS3_MBX_LF_NORMAL:
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break;
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case HNS3_MBX_LF_REF_CLOCK_LOST:
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hns3_warn(hw, "Reference clock lost!");
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break;
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case HNS3_MBX_LF_XSFP_TX_DISABLE:
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hns3_warn(hw, "SFP tx is disabled!");
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break;
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case HNS3_MBX_LF_XSFP_ABSENT:
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hns3_warn(hw, "SFP is absent!");
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break;
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default:
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hns3_warn(hw, "Unknown fail code:%u!", link_fail_code);
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break;
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}
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}
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static void
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hns3pf_handle_link_change_event(struct hns3_hw *hw,
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struct hns3_mbx_vf_to_pf_cmd *req)
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{
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#define LINK_STATUS_OFFSET 1
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#define LINK_FAIL_CODE_OFFSET 2
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if (!req->msg[LINK_STATUS_OFFSET])
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hns3_link_fail_parse(hw, req->msg[LINK_FAIL_CODE_OFFSET]);
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hns3_update_linkstatus_and_event(hw, true);
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}
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static void
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hns3_update_port_base_vlan_info(struct hns3_hw *hw,
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struct hns3_mbx_pf_to_vf_cmd *req)
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{
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#define PVID_STATE_OFFSET 1
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uint16_t new_pvid_state = req->msg[PVID_STATE_OFFSET] ?
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HNS3_PORT_BASE_VLAN_ENABLE : HNS3_PORT_BASE_VLAN_DISABLE;
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/*
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* Currently, hardware doesn't support more than two layers VLAN offload
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* based on hns3 network engine, which would cause packets loss or wrong
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* packets for these types of packets. If the hns3 PF kernel ethdev
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* driver sets the PVID for VF device after initialization of the
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* related VF device, the PF driver will notify VF driver to update the
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* PVID configuration state. The VF driver will update the PVID
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* configuration state immediately to ensure that the VLAN process in Tx
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* and Rx is correct. But in the window period of this state transition,
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* packets loss or packets with wrong VLAN may occur.
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*/
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if (hw->port_base_vlan_cfg.state != new_pvid_state) {
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hw->port_base_vlan_cfg.state = new_pvid_state;
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hns3_update_all_queues_pvid_proc_en(hw);
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}
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}
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static void
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hns3_handle_promisc_info(struct hns3_hw *hw, uint16_t promisc_en)
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{
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if (!promisc_en) {
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/*
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* When promisc/allmulti mode is closed by the hns3 PF kernel
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* ethdev driver for untrusted, modify VF's related status.
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*/
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hns3_warn(hw, "Promisc mode will be closed by host for being "
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"untrusted.");
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hw->data->promiscuous = 0;
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hw->data->all_multicast = 0;
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}
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}
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static void
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hns3_handle_mbx_msg_out_intr(struct hns3_hw *hw)
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{
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struct hns3_cmq_ring *crq = &hw->cmq.crq;
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struct hns3_mbx_pf_to_vf_cmd *req;
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struct hns3_cmd_desc *desc;
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uint32_t tail, next_to_use;
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uint8_t opcode;
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uint16_t flag;
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tail = hns3_read_dev(hw, HNS3_CMDQ_RX_TAIL_REG);
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next_to_use = crq->next_to_use;
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while (next_to_use != tail) {
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desc = &crq->desc[next_to_use];
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req = (struct hns3_mbx_pf_to_vf_cmd *)desc->data;
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opcode = req->msg[0] & 0xff;
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flag = rte_le_to_cpu_16(crq->desc[next_to_use].flag);
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if (!hns3_get_bit(flag, HNS3_CMDQ_RX_OUTVLD_B))
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goto scan_next;
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if (crq->desc[next_to_use].opcode == 0)
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goto scan_next;
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if (opcode == HNS3_MBX_PF_VF_RESP) {
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hns3_handle_mbx_response(hw, req);
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/*
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* Clear opcode to inform intr thread don't process
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* again.
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*/
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crq->desc[crq->next_to_use].opcode = 0;
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}
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scan_next:
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next_to_use = (next_to_use + 1) % hw->cmq.crq.desc_num;
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}
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}
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void
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hns3_dev_handle_mbx_msg(struct hns3_hw *hw)
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{
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struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
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struct hns3_cmq_ring *crq = &hw->cmq.crq;
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struct hns3_mbx_pf_to_vf_cmd *req;
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struct hns3_cmd_desc *desc;
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bool handle_out;
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uint8_t opcode;
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uint16_t flag;
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rte_spinlock_lock(&hw->cmq.crq.lock);
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handle_out = (rte_eal_process_type() != RTE_PROC_PRIMARY ||
|
|
!rte_thread_is_intr()) && hns->is_vf;
|
|
if (handle_out) {
|
|
/*
|
|
* Currently, any threads in the primary and secondary processes
|
|
* could send mailbox sync request, so it will need to process
|
|
* the crq message (which is the HNS3_MBX_PF_VF_RESP) in there
|
|
* own thread context. It may also process other messages
|
|
* because it uses the policy of processing all pending messages
|
|
* at once.
|
|
* But some messages such as HNS3_MBX_PUSH_LINK_STATUS could
|
|
* only process within the intr thread in primary process,
|
|
* otherwise it may lead to report lsc event in secondary
|
|
* process.
|
|
* So the threads other than intr thread in primary process
|
|
* could only process HNS3_MBX_PF_VF_RESP message, if the
|
|
* message processed, its opcode will rewrite with zero, then
|
|
* the intr thread in primary process will not process again.
|
|
*/
|
|
hns3_handle_mbx_msg_out_intr(hw);
|
|
rte_spinlock_unlock(&hw->cmq.crq.lock);
|
|
return;
|
|
}
|
|
|
|
while (!hns3_cmd_crq_empty(hw)) {
|
|
if (__atomic_load_n(&hw->reset.disable_cmd, __ATOMIC_RELAXED)) {
|
|
rte_spinlock_unlock(&hw->cmq.crq.lock);
|
|
return;
|
|
}
|
|
|
|
desc = &crq->desc[crq->next_to_use];
|
|
req = (struct hns3_mbx_pf_to_vf_cmd *)desc->data;
|
|
opcode = req->msg[0] & 0xff;
|
|
|
|
flag = rte_le_to_cpu_16(crq->desc[crq->next_to_use].flag);
|
|
if (unlikely(!hns3_get_bit(flag, HNS3_CMDQ_RX_OUTVLD_B))) {
|
|
hns3_warn(hw,
|
|
"dropped invalid mailbox message, code = %u",
|
|
opcode);
|
|
|
|
/* dropping/not processing this invalid message */
|
|
crq->desc[crq->next_to_use].flag = 0;
|
|
hns3_mbx_ring_ptr_move_crq(crq);
|
|
continue;
|
|
}
|
|
|
|
handle_out = hns->is_vf && desc->opcode == 0;
|
|
if (handle_out) {
|
|
/* Message already processed by other thread */
|
|
crq->desc[crq->next_to_use].flag = 0;
|
|
hns3_mbx_ring_ptr_move_crq(crq);
|
|
continue;
|
|
}
|
|
|
|
switch (opcode) {
|
|
case HNS3_MBX_PF_VF_RESP:
|
|
hns3_handle_mbx_response(hw, req);
|
|
break;
|
|
case HNS3_MBX_LINK_STAT_CHANGE:
|
|
hns3vf_handle_link_change_event(hw, req);
|
|
break;
|
|
case HNS3_MBX_ASSERTING_RESET:
|
|
hns3_handle_asserting_reset(hw, req);
|
|
break;
|
|
case HNS3_MBX_PUSH_LINK_STATUS:
|
|
/*
|
|
* This message is reported by the firmware and is
|
|
* reported in 'struct hns3_mbx_vf_to_pf_cmd' format.
|
|
* Therefore, we should cast the req variable to
|
|
* 'struct hns3_mbx_vf_to_pf_cmd' and then process it.
|
|
*/
|
|
hns3pf_handle_link_change_event(hw,
|
|
(struct hns3_mbx_vf_to_pf_cmd *)req);
|
|
break;
|
|
case HNS3_MBX_PUSH_VLAN_INFO:
|
|
/*
|
|
* When the PVID configuration status of VF device is
|
|
* changed by the hns3 PF kernel driver, VF driver will
|
|
* receive this mailbox message from PF driver.
|
|
*/
|
|
hns3_update_port_base_vlan_info(hw, req);
|
|
break;
|
|
case HNS3_MBX_PUSH_PROMISC_INFO:
|
|
/*
|
|
* When the trust status of VF device changed by the
|
|
* hns3 PF kernel driver, VF driver will receive this
|
|
* mailbox message from PF driver.
|
|
*/
|
|
hns3_handle_promisc_info(hw, req->msg[1]);
|
|
break;
|
|
default:
|
|
hns3_err(hw, "received unsupported(%u) mbx msg",
|
|
req->msg[0]);
|
|
break;
|
|
}
|
|
|
|
crq->desc[crq->next_to_use].flag = 0;
|
|
hns3_mbx_ring_ptr_move_crq(crq);
|
|
}
|
|
|
|
/* Write back CMDQ_RQ header pointer, IMP need this pointer */
|
|
hns3_write_dev(hw, HNS3_CMDQ_RX_HEAD_REG, crq->next_to_use);
|
|
|
|
rte_spinlock_unlock(&hw->cmq.crq.lock);
|
|
}
|