1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018-2019 HiSilicon Limited.
5 #include <ethdev_driver.h>
8 #include "hns3_ethdev.h"
10 #include "hns3_logs.h"
11 #include "hns3_intr.h"
12 #include "hns3_rxtx.h"
14 #define HNS3_CMD_CODE_OFFSET 2
16 static const struct errno_respcode_map err_code_map[] = {
30 hns3_resp_to_errno(uint16_t resp_code)
34 num = sizeof(err_code_map) / sizeof(struct errno_respcode_map);
35 for (i = 0; i < num; i++) {
36 if (err_code_map[i].resp_code == resp_code)
37 return err_code_map[i].err_no;
44 hns3_poll_all_sync_msg(void)
46 struct rte_eth_dev *eth_dev;
47 struct hns3_adapter *adapter;
51 RTE_ETH_FOREACH_DEV(port_id) {
52 eth_dev = &rte_eth_devices[port_id];
53 name = eth_dev->device->driver->name;
54 if (strcmp(name, "net_hns3") && strcmp(name, "net_hns3_vf"))
56 adapter = eth_dev->data->dev_private;
57 if (!adapter || adapter->hw.adapter_state == HNS3_NIC_CLOSED)
59 /* Synchronous msg, the mbx_resp.req_msg_data is non-zero */
60 if (adapter->hw.mbx_resp.req_msg_data)
61 hns3_dev_handle_mbx_msg(&adapter->hw);
66 hns3_get_mbx_resp(struct hns3_hw *hw, uint16_t code0, uint16_t code1,
67 uint8_t *resp_data, uint16_t resp_len)
69 #define HNS3_MAX_RETRY_MS 500
70 struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
71 struct hns3_mbx_resp_status *mbx_resp;
76 if (resp_len > HNS3_MBX_MAX_RESP_DATA_SIZE) {
77 hns3_err(hw, "VF mbx response len(=%u) exceeds maximum(=%d)",
78 resp_len, HNS3_MBX_MAX_RESP_DATA_SIZE);
82 now = get_timeofday_ms();
83 end = now + HNS3_MAX_RETRY_MS;
84 while ((hw->mbx_resp.head != hw->mbx_resp.tail + hw->mbx_resp.lost) &&
86 if (__atomic_load_n(&hw->reset.disable_cmd, __ATOMIC_RELAXED)) {
87 hns3_err(hw, "Don't wait for mbx respone because of "
92 if (is_reset_pending(hns)) {
93 hw->mbx_resp.req_msg_data = 0;
94 hns3_err(hw, "Don't wait for mbx respone because of "
100 * The mbox response is running on the interrupt thread.
101 * Sending mbox in the interrupt thread cannot wait for the
102 * response, so polling the mbox response on the irq thread.
104 if (pthread_equal(hw->irq_thread_id, pthread_self())) {
106 hns3_poll_all_sync_msg();
108 rte_delay_ms(HNS3_POLL_RESPONE_MS);
110 now = get_timeofday_ms();
112 hw->mbx_resp.req_msg_data = 0;
116 "VF could not get mbx(%u,%u) head(%u) tail(%u) lost(%u) from PF in_irq:%d",
117 code0, code1, hw->mbx_resp.head, hw->mbx_resp.tail,
118 hw->mbx_resp.lost, in_irq);
122 mbx_resp = &hw->mbx_resp;
124 if (mbx_resp->resp_status)
125 return mbx_resp->resp_status;
128 memcpy(resp_data, &mbx_resp->additional_info[0], resp_len);
134 hns3_send_mbx_msg(struct hns3_hw *hw, uint16_t code, uint16_t subcode,
135 const uint8_t *msg_data, uint8_t msg_len, bool need_resp,
136 uint8_t *resp_data, uint16_t resp_len)
138 struct hns3_mbx_vf_to_pf_cmd *req;
139 struct hns3_cmd_desc desc;
140 bool is_ring_vector_msg;
144 req = (struct hns3_mbx_vf_to_pf_cmd *)desc.data;
146 /* first two bytes are reserved for code & subcode */
147 if (msg_len > (HNS3_MBX_MAX_MSG_SIZE - HNS3_CMD_CODE_OFFSET)) {
149 "VF send mbx msg fail, msg len %u exceeds max payload len %d",
150 msg_len, HNS3_MBX_MAX_MSG_SIZE - HNS3_CMD_CODE_OFFSET);
154 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_MBX_VF_TO_PF, false);
156 is_ring_vector_msg = (code == HNS3_MBX_MAP_RING_TO_VECTOR) ||
157 (code == HNS3_MBX_UNMAP_RING_TO_VECTOR) ||
158 (code == HNS3_MBX_GET_RING_VECTOR_MAP);
159 if (!is_ring_vector_msg)
160 req->msg[1] = subcode;
162 offset = is_ring_vector_msg ? 1 : HNS3_CMD_CODE_OFFSET;
163 memcpy(&req->msg[offset], msg_data, msg_len);
166 /* synchronous send */
168 req->mbx_need_resp |= HNS3_MBX_NEED_RESP_BIT;
169 rte_spinlock_lock(&hw->mbx_resp.lock);
170 hw->mbx_resp.req_msg_data = (uint32_t)code << 16 | subcode;
172 ret = hns3_cmd_send(hw, &desc, 1);
174 rte_spinlock_unlock(&hw->mbx_resp.lock);
175 hns3_err(hw, "VF failed(=%d) to send mbx message to PF",
180 ret = hns3_get_mbx_resp(hw, code, subcode, resp_data, resp_len);
181 rte_spinlock_unlock(&hw->mbx_resp.lock);
183 /* asynchronous send */
184 ret = hns3_cmd_send(hw, &desc, 1);
186 hns3_err(hw, "VF failed(=%d) to send mbx message to PF",
196 hns3_cmd_crq_empty(struct hns3_hw *hw)
198 uint32_t tail = hns3_read_dev(hw, HNS3_CMDQ_RX_TAIL_REG);
200 return tail == hw->cmq.crq.next_to_use;
204 hns3_mbx_handler(struct hns3_hw *hw)
206 enum hns3_reset_level reset_level;
207 uint8_t link_status, link_duplex;
215 /* process all the async queue messages */
216 while (tail != hw->arq.head) {
217 msg_q = hw->arq.msg_q[hw->arq.head];
219 opcode = msg_q[0] & 0xff;
221 case HNS3_MBX_LINK_STAT_CHANGE:
222 memcpy(&link_speed, &msg_q[2], sizeof(link_speed));
223 link_status = rte_le_to_cpu_16(msg_q[1]);
224 link_duplex = (uint8_t)rte_le_to_cpu_16(msg_q[4]);
225 hns3vf_update_link_status(hw, link_status, link_speed,
228 case HNS3_MBX_ASSERTING_RESET:
229 /* PF has asserted reset hence VF should go in pending
230 * state and poll for the hardware reset status till it
231 * has been completely reset. After this stack should
232 * eventually be re-initialized.
234 reset_level = rte_le_to_cpu_16(msg_q[1]);
235 hns3_atomic_set_bit(reset_level, &hw->reset.pending);
237 hns3_warn(hw, "PF inform reset level %d", reset_level);
238 hw->reset.stats.request_cnt++;
239 hns3_schedule_reset(HNS3_DEV_HW_TO_ADAPTER(hw));
242 hns3_err(hw, "Fetched unsupported(%u) message from arq",
247 hns3_mbx_head_ptr_move_arq(hw->arq);
248 msg_q = hw->arq.msg_q[hw->arq.head];
253 * Case1: receive response after timeout, req_msg_data
254 * is 0, not equal resp_msg, do lost--
255 * Case2: receive last response during new send_mbx_msg,
256 * req_msg_data is different with resp_msg, let
257 * lost--, continue to wait for response.
260 hns3_update_resp_position(struct hns3_hw *hw, uint32_t resp_msg)
262 struct hns3_mbx_resp_status *resp = &hw->mbx_resp;
263 uint32_t tail = resp->tail + 1;
265 if (tail > resp->head)
267 if (resp->req_msg_data != resp_msg) {
270 hns3_warn(hw, "Received a mismatched response req_msg(%x) "
271 "resp_msg(%x) head(%u) tail(%u) lost(%u)",
272 resp->req_msg_data, resp_msg, resp->head, tail,
274 } else if (tail + resp->lost > resp->head) {
276 hns3_warn(hw, "Received a new response again resp_msg(%x) "
277 "head(%u) tail(%u) lost(%u)", resp_msg,
278 resp->head, tail, resp->lost);
285 hns3_link_fail_parse(struct hns3_hw *hw, uint8_t link_fail_code)
287 switch (link_fail_code) {
288 case HNS3_MBX_LF_NORMAL:
290 case HNS3_MBX_LF_REF_CLOCK_LOST:
291 hns3_warn(hw, "Reference clock lost!");
293 case HNS3_MBX_LF_XSFP_TX_DISABLE:
294 hns3_warn(hw, "SFP tx is disabled!");
296 case HNS3_MBX_LF_XSFP_ABSENT:
297 hns3_warn(hw, "SFP is absent!");
300 hns3_warn(hw, "Unknown fail code:%u!", link_fail_code);
306 hns3_handle_link_change_event(struct hns3_hw *hw,
307 struct hns3_mbx_pf_to_vf_cmd *req)
309 #define LINK_STATUS_OFFSET 1
310 #define LINK_FAIL_CODE_OFFSET 2
312 if (!req->msg[LINK_STATUS_OFFSET])
313 hns3_link_fail_parse(hw, req->msg[LINK_FAIL_CODE_OFFSET]);
315 hns3_update_link_status_and_event(hw);
319 hns3_update_port_base_vlan_info(struct hns3_hw *hw,
320 struct hns3_mbx_pf_to_vf_cmd *req)
322 #define PVID_STATE_OFFSET 1
323 uint16_t new_pvid_state = req->msg[PVID_STATE_OFFSET] ?
324 HNS3_PORT_BASE_VLAN_ENABLE : HNS3_PORT_BASE_VLAN_DISABLE;
326 * Currently, hardware doesn't support more than two layers VLAN offload
327 * based on hns3 network engine, which would cause packets loss or wrong
328 * packets for these types of packets. If the hns3 PF kernel ethdev
329 * driver sets the PVID for VF device after initialization of the
330 * related VF device, the PF driver will notify VF driver to update the
331 * PVID configuration state. The VF driver will update the PVID
332 * configuration state immediately to ensure that the VLAN process in Tx
333 * and Rx is correct. But in the window period of this state transition,
334 * packets loss or packets with wrong VLAN may occur.
336 if (hw->port_base_vlan_cfg.state != new_pvid_state) {
337 hw->port_base_vlan_cfg.state = new_pvid_state;
338 hns3_update_all_queues_pvid_proc_en(hw);
343 hns3_handle_promisc_info(struct hns3_hw *hw, uint16_t promisc_en)
347 * When promisc/allmulti mode is closed by the hns3 PF kernel
348 * ethdev driver for untrusted, modify VF's related status.
350 hns3_warn(hw, "Promisc mode will be closed by host for being "
352 hw->data->promiscuous = 0;
353 hw->data->all_multicast = 0;
358 hns3_dev_handle_mbx_msg(struct hns3_hw *hw)
360 struct hns3_mbx_resp_status *resp = &hw->mbx_resp;
361 struct hns3_cmq_ring *crq = &hw->cmq.crq;
362 struct hns3_mbx_pf_to_vf_cmd *req;
363 struct hns3_cmd_desc *desc;
371 while (!hns3_cmd_crq_empty(hw)) {
372 if (__atomic_load_n(&hw->reset.disable_cmd, __ATOMIC_RELAXED))
375 desc = &crq->desc[crq->next_to_use];
376 req = (struct hns3_mbx_pf_to_vf_cmd *)desc->data;
377 opcode = req->msg[0] & 0xff;
379 flag = rte_le_to_cpu_16(crq->desc[crq->next_to_use].flag);
380 if (unlikely(!hns3_get_bit(flag, HNS3_CMDQ_RX_OUTVLD_B))) {
382 "dropped invalid mailbox message, code = %u",
385 /* dropping/not processing this invalid message */
386 crq->desc[crq->next_to_use].flag = 0;
387 hns3_mbx_ring_ptr_move_crq(crq);
392 case HNS3_MBX_PF_VF_RESP:
393 resp->resp_status = hns3_resp_to_errno(req->msg[3]);
395 temp = (uint8_t *)&req->msg[4];
396 for (i = 0; i < HNS3_MBX_MAX_RESP_DATA_SIZE; i++) {
397 resp->additional_info[i] = *temp;
400 msg_data = (uint32_t)req->msg[1] << 16 | req->msg[2];
401 hns3_update_resp_position(hw, msg_data);
403 case HNS3_MBX_LINK_STAT_CHANGE:
404 case HNS3_MBX_ASSERTING_RESET:
405 msg_q = hw->arq.msg_q[hw->arq.tail];
406 memcpy(&msg_q[0], req->msg,
407 HNS3_MBX_MAX_ARQ_MSG_SIZE * sizeof(uint16_t));
408 hns3_mbx_tail_ptr_move_arq(hw->arq);
410 hns3_mbx_handler(hw);
412 case HNS3_MBX_PUSH_LINK_STATUS:
413 hns3_handle_link_change_event(hw, req);
415 case HNS3_MBX_PUSH_VLAN_INFO:
417 * When the PVID configuration status of VF device is
418 * changed by the hns3 PF kernel driver, VF driver will
419 * receive this mailbox message from PF driver.
421 hns3_update_port_base_vlan_info(hw, req);
423 case HNS3_MBX_PUSH_PROMISC_INFO:
425 * When the trust status of VF device changed by the
426 * hns3 PF kernel driver, VF driver will receive this
427 * mailbox message from PF driver.
429 hns3_handle_promisc_info(hw, req->msg[1]);
433 "VF received unsupported(%u) mbx msg from PF",
438 crq->desc[crq->next_to_use].flag = 0;
439 hns3_mbx_ring_ptr_move_crq(crq);
442 /* Write back CMDQ_RQ header pointer, IMP need this pointer */
443 hns3_write_dev(hw, HNS3_CMDQ_RX_HEAD_REG, crq->next_to_use);