1
2
3
4#include "hclge_mbx.h"
5#include "hclgevf_main.h"
6#include "hnae3.h"
7
8#define CREATE_TRACE_POINTS
9#include "hclgevf_trace.h"
10
11static int hclgevf_resp_to_errno(u16 resp_code)
12{
13 return resp_code ? -resp_code : 0;
14}
15
16#define HCLGEVF_MBX_MATCH_ID_START 1
17static void hclgevf_reset_mbx_resp_status(struct hclgevf_dev *hdev)
18{
19
20
21
22 hdev->mbx_resp.received_resp = false;
23 hdev->mbx_resp.origin_mbx_msg = 0;
24 hdev->mbx_resp.resp_status = 0;
25 hdev->mbx_resp.match_id++;
26
27 if (hdev->mbx_resp.match_id == 0)
28 hdev->mbx_resp.match_id = HCLGEVF_MBX_MATCH_ID_START;
29 memset(hdev->mbx_resp.additional_info, 0, HCLGE_MBX_MAX_RESP_DATA_SIZE);
30}
31
32
33
34
35
36
37
38static int hclgevf_get_mbx_resp(struct hclgevf_dev *hdev, u16 code0, u16 code1,
39 u8 *resp_data, u16 resp_len)
40{
41#define HCLGEVF_MAX_TRY_TIMES 500
42#define HCLGEVF_SLEEP_USECOND 1000
43 struct hclgevf_mbx_resp_status *mbx_resp;
44 u16 r_code0, r_code1;
45 int i = 0;
46
47 if (resp_len > HCLGE_MBX_MAX_RESP_DATA_SIZE) {
48 dev_err(&hdev->pdev->dev,
49 "VF mbx response len(=%u) exceeds maximum(=%u)\n",
50 resp_len,
51 HCLGE_MBX_MAX_RESP_DATA_SIZE);
52 return -EINVAL;
53 }
54
55 while ((!hdev->mbx_resp.received_resp) && (i < HCLGEVF_MAX_TRY_TIMES)) {
56 if (test_bit(HCLGEVF_STATE_CMD_DISABLE, &hdev->state))
57 return -EIO;
58
59 usleep_range(HCLGEVF_SLEEP_USECOND, HCLGEVF_SLEEP_USECOND * 2);
60 i++;
61 }
62
63 if (i >= HCLGEVF_MAX_TRY_TIMES) {
64 dev_err(&hdev->pdev->dev,
65 "VF could not get mbx(%u,%u) resp(=%d) from PF in %d tries\n",
66 code0, code1, hdev->mbx_resp.received_resp, i);
67 return -EIO;
68 }
69
70 mbx_resp = &hdev->mbx_resp;
71 r_code0 = (u16)(mbx_resp->origin_mbx_msg >> 16);
72 r_code1 = (u16)(mbx_resp->origin_mbx_msg & 0xff);
73
74 if (mbx_resp->resp_status)
75 return mbx_resp->resp_status;
76
77 if (resp_data)
78 memcpy(resp_data, &mbx_resp->additional_info[0], resp_len);
79
80 hclgevf_reset_mbx_resp_status(hdev);
81
82 if (!(r_code0 == code0 && r_code1 == code1 && !mbx_resp->resp_status)) {
83 dev_err(&hdev->pdev->dev,
84 "VF could not match resp code(code0=%u,code1=%u), %d\n",
85 code0, code1, mbx_resp->resp_status);
86 dev_err(&hdev->pdev->dev,
87 "VF could not match resp r_code(r_code0=%u,r_code1=%u)\n",
88 r_code0, r_code1);
89 return -EIO;
90 }
91
92 return 0;
93}
94
95int hclgevf_send_mbx_msg(struct hclgevf_dev *hdev,
96 struct hclge_vf_to_pf_msg *send_msg, bool need_resp,
97 u8 *resp_data, u16 resp_len)
98{
99 struct hclge_mbx_vf_to_pf_cmd *req;
100 struct hclgevf_desc desc;
101 int status;
102
103 req = (struct hclge_mbx_vf_to_pf_cmd *)desc.data;
104
105 if (!send_msg) {
106 dev_err(&hdev->pdev->dev,
107 "failed to send mbx, msg is NULL\n");
108 return -EINVAL;
109 }
110
111 hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_VF_TO_PF, false);
112 if (need_resp)
113 hnae3_set_bit(req->mbx_need_resp, HCLGE_MBX_NEED_RESP_B, 1);
114
115 memcpy(&req->msg, send_msg, sizeof(struct hclge_vf_to_pf_msg));
116
117 trace_hclge_vf_mbx_send(hdev, req);
118
119
120 if (need_resp) {
121 mutex_lock(&hdev->mbx_resp.mbx_mutex);
122 hclgevf_reset_mbx_resp_status(hdev);
123 req->match_id = hdev->mbx_resp.match_id;
124 status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
125 if (status) {
126 dev_err(&hdev->pdev->dev,
127 "VF failed(=%d) to send mbx message to PF\n",
128 status);
129 mutex_unlock(&hdev->mbx_resp.mbx_mutex);
130 return status;
131 }
132
133 status = hclgevf_get_mbx_resp(hdev, send_msg->code,
134 send_msg->subcode, resp_data,
135 resp_len);
136 mutex_unlock(&hdev->mbx_resp.mbx_mutex);
137 } else {
138
139 status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
140 if (status) {
141 dev_err(&hdev->pdev->dev,
142 "VF failed(=%d) to send mbx message to PF\n",
143 status);
144 return status;
145 }
146 }
147
148 return status;
149}
150
151static bool hclgevf_cmd_crq_empty(struct hclgevf_hw *hw)
152{
153 u32 tail = hclgevf_read_dev(hw, HCLGEVF_NIC_CRQ_TAIL_REG);
154
155 return tail == hw->cmq.crq.next_to_use;
156}
157
158static void hclgevf_handle_mbx_response(struct hclgevf_dev *hdev,
159 struct hclge_mbx_pf_to_vf_cmd *req)
160{
161 struct hclgevf_mbx_resp_status *resp = &hdev->mbx_resp;
162
163 if (resp->received_resp)
164 dev_warn(&hdev->pdev->dev,
165 "VF mbx resp flag not clear(%u)\n",
166 req->msg.vf_mbx_msg_code);
167
168 resp->origin_mbx_msg =
169 (req->msg.vf_mbx_msg_code << 16);
170 resp->origin_mbx_msg |= req->msg.vf_mbx_msg_subcode;
171 resp->resp_status =
172 hclgevf_resp_to_errno(req->msg.resp_status);
173 memcpy(resp->additional_info, req->msg.resp_data,
174 HCLGE_MBX_MAX_RESP_DATA_SIZE * sizeof(u8));
175 if (req->match_id) {
176
177
178
179
180
181 if (req->match_id == resp->match_id)
182 resp->received_resp = true;
183 } else {
184 resp->received_resp = true;
185 }
186}
187
188static void hclgevf_handle_mbx_msg(struct hclgevf_dev *hdev,
189 struct hclge_mbx_pf_to_vf_cmd *req)
190{
191
192
193
194 if (atomic_read(&hdev->arq.count) >=
195 HCLGE_MBX_MAX_ARQ_MSG_NUM) {
196 dev_warn(&hdev->pdev->dev,
197 "Async Q full, dropping msg(%u)\n",
198 req->msg.code);
199 return;
200 }
201
202
203 memcpy(hdev->arq.msg_q[hdev->arq.tail], &req->msg,
204 HCLGE_MBX_MAX_ARQ_MSG_SIZE * sizeof(u16));
205 hclge_mbx_tail_ptr_move_arq(hdev->arq);
206 atomic_inc(&hdev->arq.count);
207
208 hclgevf_mbx_task_schedule(hdev);
209}
210
211void hclgevf_mbx_handler(struct hclgevf_dev *hdev)
212{
213 struct hclge_mbx_pf_to_vf_cmd *req;
214 struct hclgevf_cmq_ring *crq;
215 struct hclgevf_desc *desc;
216 u16 flag;
217
218 crq = &hdev->hw.cmq.crq;
219
220 while (!hclgevf_cmd_crq_empty(&hdev->hw)) {
221 if (test_bit(HCLGEVF_STATE_CMD_DISABLE, &hdev->state)) {
222 dev_info(&hdev->pdev->dev, "vf crq need init\n");
223 return;
224 }
225
226 desc = &crq->desc[crq->next_to_use];
227 req = (struct hclge_mbx_pf_to_vf_cmd *)desc->data;
228
229 flag = le16_to_cpu(crq->desc[crq->next_to_use].flag);
230 if (unlikely(!hnae3_get_bit(flag, HCLGEVF_CMDQ_RX_OUTVLD_B))) {
231 dev_warn(&hdev->pdev->dev,
232 "dropped invalid mailbox message, code = %u\n",
233 req->msg.code);
234
235
236 crq->desc[crq->next_to_use].flag = 0;
237 hclge_mbx_ring_ptr_move_crq(crq);
238 continue;
239 }
240
241 trace_hclge_vf_mbx_get(hdev, req);
242
243
244
245
246
247
248
249 switch (req->msg.code) {
250 case HCLGE_MBX_PF_VF_RESP:
251 hclgevf_handle_mbx_response(hdev, req);
252 break;
253 case HCLGE_MBX_LINK_STAT_CHANGE:
254 case HCLGE_MBX_ASSERTING_RESET:
255 case HCLGE_MBX_LINK_STAT_MODE:
256 case HCLGE_MBX_PUSH_VLAN_INFO:
257 case HCLGE_MBX_PUSH_PROMISC_INFO:
258 hclgevf_handle_mbx_msg(hdev, req);
259 break;
260 default:
261 dev_err(&hdev->pdev->dev,
262 "VF received unsupported(%u) mbx msg from PF\n",
263 req->msg.code);
264 break;
265 }
266 crq->desc[crq->next_to_use].flag = 0;
267 hclge_mbx_ring_ptr_move_crq(crq);
268 }
269
270
271 hclgevf_write_dev(&hdev->hw, HCLGEVF_NIC_CRQ_HEAD_REG,
272 crq->next_to_use);
273}
274
275static void hclgevf_parse_promisc_info(struct hclgevf_dev *hdev,
276 u16 promisc_info)
277{
278 if (!promisc_info)
279 dev_info(&hdev->pdev->dev,
280 "Promisc mode is closed by host for being untrusted.\n");
281}
282
283void hclgevf_mbx_async_handler(struct hclgevf_dev *hdev)
284{
285 enum hnae3_reset_type reset_type;
286 u16 link_status, state;
287 u16 *msg_q, *vlan_info;
288 u8 duplex;
289 u32 speed;
290 u32 tail;
291 u8 flag;
292 u8 idx;
293
294 tail = hdev->arq.tail;
295
296
297 while (tail != hdev->arq.head) {
298 if (test_bit(HCLGEVF_STATE_CMD_DISABLE, &hdev->state)) {
299 dev_info(&hdev->pdev->dev,
300 "vf crq need init in async\n");
301 return;
302 }
303
304 msg_q = hdev->arq.msg_q[hdev->arq.head];
305
306 switch (msg_q[0]) {
307 case HCLGE_MBX_LINK_STAT_CHANGE:
308 link_status = msg_q[1];
309 memcpy(&speed, &msg_q[2], sizeof(speed));
310 duplex = (u8)msg_q[4];
311 flag = (u8)msg_q[5];
312
313
314 hclgevf_update_speed_duplex(hdev, speed, duplex);
315 hclgevf_update_link_status(hdev, link_status);
316
317 if (flag & HCLGE_MBX_PUSH_LINK_STATUS_EN)
318 set_bit(HCLGEVF_STATE_PF_PUSH_LINK_STATUS,
319 &hdev->state);
320
321 break;
322 case HCLGE_MBX_LINK_STAT_MODE:
323 idx = (u8)msg_q[1];
324 if (idx)
325 memcpy(&hdev->hw.mac.supported, &msg_q[2],
326 sizeof(unsigned long));
327 else
328 memcpy(&hdev->hw.mac.advertising, &msg_q[2],
329 sizeof(unsigned long));
330 break;
331 case HCLGE_MBX_ASSERTING_RESET:
332
333
334
335
336
337 reset_type = (enum hnae3_reset_type)msg_q[1];
338 set_bit(reset_type, &hdev->reset_pending);
339 set_bit(HCLGEVF_RESET_PENDING, &hdev->reset_state);
340 hclgevf_reset_task_schedule(hdev);
341
342 break;
343 case HCLGE_MBX_PUSH_VLAN_INFO:
344 state = msg_q[1];
345 vlan_info = &msg_q[1];
346 hclgevf_update_port_base_vlan_info(hdev, state,
347 (u8 *)vlan_info, 8);
348 break;
349 case HCLGE_MBX_PUSH_PROMISC_INFO:
350 hclgevf_parse_promisc_info(hdev, msg_q[1]);
351 break;
352 default:
353 dev_err(&hdev->pdev->dev,
354 "fetched unsupported(%u) message from arq\n",
355 msg_q[0]);
356 break;
357 }
358
359 hclge_mbx_head_ptr_move_arq(hdev->arq);
360 atomic_dec(&hdev->arq.count);
361 msg_q = hdev->arq.msg_q[hdev->arq.head];
362 }
363}
364