1 // SPDX-License-Identifier: GPL-2.0+
2 // Copyright (c) 2016-2017 Hisilicon Limited.
4 #include "hclge_main.h"
8 /* hclge_gen_resp_to_vf: used to generate a synchronous response to VF when PF
9 * receives a mailbox message from VF.
10 * @vport: pointer to struct hclge_vport
11 * @vf_to_pf_req: pointer to hclge_mbx_vf_to_pf_cmd of the original mailbox
13 * @resp_status: indicate to VF whether its request success(0) or failed.
15 static int hclge_gen_resp_to_vf(struct hclge_vport *vport,
16 struct hclge_mbx_vf_to_pf_cmd *vf_to_pf_req,
18 u8 *resp_data, u16 resp_data_len)
20 struct hclge_mbx_pf_to_vf_cmd *resp_pf_to_vf;
21 struct hclge_dev *hdev = vport->back;
22 enum hclge_cmd_status status;
23 struct hclge_desc desc;
25 resp_pf_to_vf = (struct hclge_mbx_pf_to_vf_cmd *)desc.data;
27 if (resp_data_len > HCLGE_MBX_MAX_RESP_DATA_SIZE) {
28 dev_err(&hdev->pdev->dev,
29 "PF fail to gen resp to VF len %d exceeds max len %d\n",
31 HCLGE_MBX_MAX_RESP_DATA_SIZE);
34 hclge_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_PF_TO_VF, false);
36 resp_pf_to_vf->dest_vfid = vf_to_pf_req->mbx_src_vfid;
37 resp_pf_to_vf->msg_len = vf_to_pf_req->msg_len;
39 resp_pf_to_vf->msg[0] = HCLGE_MBX_PF_VF_RESP;
40 resp_pf_to_vf->msg[1] = vf_to_pf_req->msg[0];
41 resp_pf_to_vf->msg[2] = vf_to_pf_req->msg[1];
42 resp_pf_to_vf->msg[3] = (resp_status == 0) ? 0 : 1;
44 if (resp_data && resp_data_len > 0)
45 memcpy(&resp_pf_to_vf->msg[4], resp_data, resp_data_len);
47 status = hclge_cmd_send(&hdev->hw, &desc, 1);
49 dev_err(&hdev->pdev->dev,
50 "PF failed(=%d) to send response to VF\n", status);
55 static int hclge_send_mbx_msg(struct hclge_vport *vport, u8 *msg, u16 msg_len,
56 u16 mbx_opcode, u8 dest_vfid)
58 struct hclge_mbx_pf_to_vf_cmd *resp_pf_to_vf;
59 struct hclge_dev *hdev = vport->back;
60 enum hclge_cmd_status status;
61 struct hclge_desc desc;
63 resp_pf_to_vf = (struct hclge_mbx_pf_to_vf_cmd *)desc.data;
65 hclge_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_PF_TO_VF, false);
67 resp_pf_to_vf->dest_vfid = dest_vfid;
68 resp_pf_to_vf->msg_len = msg_len;
69 resp_pf_to_vf->msg[0] = mbx_opcode;
71 memcpy(&resp_pf_to_vf->msg[1], msg, msg_len);
73 status = hclge_cmd_send(&hdev->hw, &desc, 1);
75 dev_err(&hdev->pdev->dev,
76 "PF failed(=%d) to send mailbox message to VF\n",
82 int hclge_inform_reset_assert_to_vf(struct hclge_vport *vport)
87 dest_vfid = (u8)vport->vport_id;
89 /* send this requested info to VF */
90 return hclge_send_mbx_msg(vport, msg_data, sizeof(u8),
91 HCLGE_MBX_ASSERTING_RESET, dest_vfid);
94 static void hclge_free_vector_ring_chain(struct hnae3_ring_chain_node *head)
96 struct hnae3_ring_chain_node *chain_tmp, *chain;
101 chain_tmp = chain->next;
107 /* hclge_get_ring_chain_from_mbx: get ring type & tqp id & int_gl idx
108 * from mailbox message
110 * msg[1]: <not relevant to this function>
112 * msg[3]: first ring type (TX|RX)
113 * msg[4]: first tqp id
114 * msg[5]: first int_gl idx
115 * msg[6] ~ msg[14]: other ring type, tqp id and int_gl idx
117 static int hclge_get_ring_chain_from_mbx(
118 struct hclge_mbx_vf_to_pf_cmd *req,
119 struct hnae3_ring_chain_node *ring_chain,
120 struct hclge_vport *vport)
122 struct hnae3_ring_chain_node *cur_chain, *new_chain;
126 ring_num = req->msg[2];
128 if (ring_num > ((HCLGE_MBX_VF_MSG_DATA_NUM -
129 HCLGE_MBX_RING_MAP_BASIC_MSG_NUM) /
130 HCLGE_MBX_RING_NODE_VARIABLE_NUM))
133 hnae3_set_bit(ring_chain->flag, HNAE3_RING_TYPE_B, req->msg[3]);
134 ring_chain->tqp_index =
135 hclge_get_queue_id(vport->nic.kinfo.tqp[req->msg[4]]);
136 hnae3_set_field(ring_chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
140 cur_chain = ring_chain;
142 for (i = 1; i < ring_num; i++) {
143 new_chain = kzalloc(sizeof(*new_chain), GFP_KERNEL);
147 hnae3_set_bit(new_chain->flag, HNAE3_RING_TYPE_B,
148 req->msg[HCLGE_MBX_RING_NODE_VARIABLE_NUM * i +
149 HCLGE_MBX_RING_MAP_BASIC_MSG_NUM]);
151 new_chain->tqp_index =
152 hclge_get_queue_id(vport->nic.kinfo.tqp
153 [req->msg[HCLGE_MBX_RING_NODE_VARIABLE_NUM * i +
154 HCLGE_MBX_RING_MAP_BASIC_MSG_NUM + 1]]);
156 hnae3_set_field(new_chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
158 req->msg[HCLGE_MBX_RING_NODE_VARIABLE_NUM * i +
159 HCLGE_MBX_RING_MAP_BASIC_MSG_NUM + 2]);
161 cur_chain->next = new_chain;
162 cur_chain = new_chain;
167 hclge_free_vector_ring_chain(ring_chain);
171 static int hclge_map_unmap_ring_to_vf_vector(struct hclge_vport *vport, bool en,
172 struct hclge_mbx_vf_to_pf_cmd *req)
174 struct hnae3_ring_chain_node ring_chain;
175 int vector_id = req->msg[1];
178 memset(&ring_chain, 0, sizeof(ring_chain));
179 ret = hclge_get_ring_chain_from_mbx(req, &ring_chain, vport);
183 ret = hclge_bind_ring_with_vector(vport, vector_id, en, &ring_chain);
187 hclge_free_vector_ring_chain(&ring_chain);
192 static int hclge_set_vf_promisc_mode(struct hclge_vport *vport,
193 struct hclge_mbx_vf_to_pf_cmd *req)
195 bool en_uc = req->msg[1] ? true : false;
196 bool en_mc = req->msg[2] ? true : false;
197 struct hclge_promisc_param param;
199 /* always enable broadcast promisc bit */
200 hclge_promisc_param_init(¶m, en_uc, en_mc, true, vport->vport_id);
201 return hclge_cmd_set_promisc_mode(vport->back, ¶m);
204 static int hclge_set_vf_uc_mac_addr(struct hclge_vport *vport,
205 struct hclge_mbx_vf_to_pf_cmd *mbx_req,
208 const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]);
209 struct hclge_dev *hdev = vport->back;
212 if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_MODIFY) {
213 const u8 *old_addr = (const u8 *)(&mbx_req->msg[8]);
215 hclge_rm_uc_addr_common(vport, old_addr);
216 status = hclge_add_uc_addr_common(vport, mac_addr);
218 hclge_add_uc_addr_common(vport, old_addr);
219 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_ADD) {
220 status = hclge_add_uc_addr_common(vport, mac_addr);
221 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_REMOVE) {
222 status = hclge_rm_uc_addr_common(vport, mac_addr);
224 dev_err(&hdev->pdev->dev,
225 "failed to set unicast mac addr, unknown subcode %d\n",
231 hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0);
236 static int hclge_set_vf_mc_mac_addr(struct hclge_vport *vport,
237 struct hclge_mbx_vf_to_pf_cmd *mbx_req,
240 const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]);
241 struct hclge_dev *hdev = vport->back;
246 if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_ADD) {
247 status = hclge_add_mc_addr_common(vport, mac_addr);
248 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_REMOVE) {
249 status = hclge_rm_mc_addr_common(vport, mac_addr);
251 dev_err(&hdev->pdev->dev,
252 "failed to set mcast mac addr, unknown subcode %d\n",
258 hclge_gen_resp_to_vf(vport, mbx_req, status,
259 &resp_data, resp_len);
264 static int hclge_set_vf_vlan_cfg(struct hclge_vport *vport,
265 struct hclge_mbx_vf_to_pf_cmd *mbx_req,
270 if (mbx_req->msg[1] == HCLGE_MBX_VLAN_FILTER) {
271 struct hnae3_handle *handle = &vport->nic;
275 is_kill = !!mbx_req->msg[2];
276 memcpy(&vlan, &mbx_req->msg[3], sizeof(vlan));
277 memcpy(&proto, &mbx_req->msg[5], sizeof(proto));
278 status = hclge_set_vlan_filter(handle, cpu_to_be16(proto),
280 } else if (mbx_req->msg[1] == HCLGE_MBX_VLAN_RX_OFF_CFG) {
281 struct hnae3_handle *handle = &vport->nic;
282 bool en = mbx_req->msg[2] ? true : false;
284 status = hclge_en_hw_strip_rxvtag(handle, en);
288 status = hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0);
293 static int hclge_get_vf_tcinfo(struct hclge_vport *vport,
294 struct hclge_mbx_vf_to_pf_cmd *mbx_req,
297 struct hclge_dev *hdev = vport->back;
300 ret = hclge_gen_resp_to_vf(vport, mbx_req, 0, &hdev->hw_tc_map,
306 static int hclge_get_vf_queue_info(struct hclge_vport *vport,
307 struct hclge_mbx_vf_to_pf_cmd *mbx_req,
310 #define HCLGE_TQPS_RSS_INFO_LEN 8
311 u8 resp_data[HCLGE_TQPS_RSS_INFO_LEN];
312 struct hclge_dev *hdev = vport->back;
314 /* get the queue related info */
315 memcpy(&resp_data[0], &vport->alloc_tqps, sizeof(u16));
316 memcpy(&resp_data[2], &vport->nic.kinfo.rss_size, sizeof(u16));
317 memcpy(&resp_data[4], &hdev->num_desc, sizeof(u16));
318 memcpy(&resp_data[6], &hdev->rx_buf_len, sizeof(u16));
320 return hclge_gen_resp_to_vf(vport, mbx_req, 0, resp_data,
321 HCLGE_TQPS_RSS_INFO_LEN);
324 static int hclge_get_link_info(struct hclge_vport *vport,
325 struct hclge_mbx_vf_to_pf_cmd *mbx_req)
327 struct hclge_dev *hdev = vport->back;
333 /* mac.link can only be 0 or 1 */
334 link_status = (u16)hdev->hw.mac.link;
335 duplex = hdev->hw.mac.duplex;
336 memcpy(&msg_data[0], &link_status, sizeof(u16));
337 memcpy(&msg_data[2], &hdev->hw.mac.speed, sizeof(u32));
338 memcpy(&msg_data[6], &duplex, sizeof(u16));
339 dest_vfid = mbx_req->mbx_src_vfid;
341 /* send this requested info to VF */
342 return hclge_send_mbx_msg(vport, msg_data, sizeof(msg_data),
343 HCLGE_MBX_LINK_STAT_CHANGE, dest_vfid);
346 static void hclge_mbx_reset_vf_queue(struct hclge_vport *vport,
347 struct hclge_mbx_vf_to_pf_cmd *mbx_req)
351 memcpy(&queue_id, &mbx_req->msg[2], sizeof(queue_id));
353 hclge_reset_vf_queue(vport, queue_id);
355 /* send response msg to VF after queue reset complete*/
356 hclge_gen_resp_to_vf(vport, mbx_req, 0, NULL, 0);
359 static void hclge_reset_vf(struct hclge_vport *vport,
360 struct hclge_mbx_vf_to_pf_cmd *mbx_req)
362 struct hclge_dev *hdev = vport->back;
365 dev_warn(&hdev->pdev->dev, "PF received VF reset request from VF %d!",
368 ret = hclge_func_reset_cmd(hdev, vport->vport_id);
369 hclge_gen_resp_to_vf(vport, mbx_req, ret, NULL, 0);
372 static bool hclge_cmd_crq_empty(struct hclge_hw *hw)
374 u32 tail = hclge_read_dev(hw, HCLGE_NIC_CRQ_TAIL_REG);
376 return tail == hw->cmq.crq.next_to_use;
379 void hclge_mbx_handler(struct hclge_dev *hdev)
381 struct hclge_cmq_ring *crq = &hdev->hw.cmq.crq;
382 struct hclge_mbx_vf_to_pf_cmd *req;
383 struct hclge_vport *vport;
384 struct hclge_desc *desc;
387 /* handle all the mailbox requests in the queue */
388 while (!hclge_cmd_crq_empty(&hdev->hw)) {
389 if (test_bit(HCLGE_STATE_CMD_DISABLE, &hdev->state)) {
390 dev_warn(&hdev->pdev->dev,
391 "command queue needs re-initializing\n");
395 desc = &crq->desc[crq->next_to_use];
396 req = (struct hclge_mbx_vf_to_pf_cmd *)desc->data;
398 flag = le16_to_cpu(crq->desc[crq->next_to_use].flag);
399 if (unlikely(!hnae3_get_bit(flag, HCLGE_CMDQ_RX_OUTVLD_B))) {
400 dev_warn(&hdev->pdev->dev,
401 "dropped invalid mailbox message, code = %d\n",
404 /* dropping/not processing this invalid message */
405 crq->desc[crq->next_to_use].flag = 0;
406 hclge_mbx_ring_ptr_move_crq(crq);
410 vport = &hdev->vport[req->mbx_src_vfid];
412 switch (req->msg[0]) {
413 case HCLGE_MBX_MAP_RING_TO_VECTOR:
414 ret = hclge_map_unmap_ring_to_vf_vector(vport, true,
417 case HCLGE_MBX_UNMAP_RING_TO_VECTOR:
418 ret = hclge_map_unmap_ring_to_vf_vector(vport, false,
421 case HCLGE_MBX_SET_PROMISC_MODE:
422 ret = hclge_set_vf_promisc_mode(vport, req);
424 dev_err(&hdev->pdev->dev,
425 "PF fail(%d) to set VF promisc mode\n",
428 case HCLGE_MBX_SET_UNICAST:
429 ret = hclge_set_vf_uc_mac_addr(vport, req, true);
431 dev_err(&hdev->pdev->dev,
432 "PF fail(%d) to set VF UC MAC Addr\n",
435 case HCLGE_MBX_SET_MULTICAST:
436 ret = hclge_set_vf_mc_mac_addr(vport, req, false);
438 dev_err(&hdev->pdev->dev,
439 "PF fail(%d) to set VF MC MAC Addr\n",
442 case HCLGE_MBX_SET_VLAN:
443 ret = hclge_set_vf_vlan_cfg(vport, req, false);
445 dev_err(&hdev->pdev->dev,
446 "PF failed(%d) to config VF's VLAN\n",
449 case HCLGE_MBX_GET_QINFO:
450 ret = hclge_get_vf_queue_info(vport, req, true);
452 dev_err(&hdev->pdev->dev,
453 "PF failed(%d) to get Q info for VF\n",
456 case HCLGE_MBX_GET_TCINFO:
457 ret = hclge_get_vf_tcinfo(vport, req, true);
459 dev_err(&hdev->pdev->dev,
460 "PF failed(%d) to get TC info for VF\n",
463 case HCLGE_MBX_GET_LINK_STATUS:
464 ret = hclge_get_link_info(vport, req);
466 dev_err(&hdev->pdev->dev,
467 "PF fail(%d) to get link stat for VF\n",
470 case HCLGE_MBX_QUEUE_RESET:
471 hclge_mbx_reset_vf_queue(vport, req);
473 case HCLGE_MBX_RESET:
474 hclge_reset_vf(vport, req);
477 dev_err(&hdev->pdev->dev,
478 "un-supported mailbox message, code = %d\n",
482 crq->desc[crq->next_to_use].flag = 0;
483 hclge_mbx_ring_ptr_move_crq(crq);
486 /* Write back CMDQ_RQ header pointer, M7 need this pointer */
487 hclge_write_dev(&hdev->hw, HCLGE_NIC_CRQ_HEAD_REG, crq->next_to_use);