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1/*
2 * Copyright 2014 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23
24#include "amdgpu.h"
25#include "nbio/nbio_2_3_offset.h"
26#include "nbio/nbio_2_3_sh_mask.h"
27#include "gc/gc_10_1_0_offset.h"
28#include "gc/gc_10_1_0_sh_mask.h"
29#include "soc15.h"
30#include "navi10_ih.h"
31#include "soc15_common.h"
32#include "mxgpu_nv.h"
33
34#include "amdgpu_reset.h"
35
36static void xgpu_nv_mailbox_send_ack(struct amdgpu_device *adev)
37{
38 WREG8(NV_MAIBOX_CONTROL_RCV_OFFSET_BYTE, 2);
39}
40
41static void xgpu_nv_mailbox_set_valid(struct amdgpu_device *adev, bool val)
42{
43 WREG8(NV_MAIBOX_CONTROL_TRN_OFFSET_BYTE, val ? 1 : 0);
44}
45
46/*
47 * this peek_msg could *only* be called in IRQ routine becuase in IRQ routine
48 * RCV_MSG_VALID filed of BIF_BX_PF_MAILBOX_CONTROL must already be set to 1
49 * by host.
50 *
51 * if called no in IRQ routine, this peek_msg cannot guaranteed to return the
52 * correct value since it doesn't return the RCV_DW0 under the case that
53 * RCV_MSG_VALID is set by host.
54 */
55static enum idh_event xgpu_nv_mailbox_peek_msg(struct amdgpu_device *adev)
56{
57 return RREG32_NO_KIQ(mmMAILBOX_MSGBUF_RCV_DW0);
58}
59
60
61static int xgpu_nv_mailbox_rcv_msg(struct amdgpu_device *adev,
62 enum idh_event event)
63{
64 int r = 0;
65 u32 reg;
66
67 reg = RREG32_NO_KIQ(mmMAILBOX_MSGBUF_RCV_DW0);
68 if (reg == IDH_FAIL)
69 r = -EINVAL;
70 else if (reg != event)
71 return -ENOENT;
72
73 xgpu_nv_mailbox_send_ack(adev);
74
75 return r;
76}
77
78static uint8_t xgpu_nv_peek_ack(struct amdgpu_device *adev)
79{
80 return RREG8(NV_MAIBOX_CONTROL_TRN_OFFSET_BYTE) & 2;
81}
82
83static int xgpu_nv_poll_ack(struct amdgpu_device *adev)
84{
85 int timeout = NV_MAILBOX_POLL_ACK_TIMEDOUT;
86 u8 reg;
87
88 do {
89 reg = RREG8(NV_MAIBOX_CONTROL_TRN_OFFSET_BYTE);
90 if (reg & 2)
91 return 0;
92
93 mdelay(5);
94 timeout -= 5;
95 } while (timeout > 1);
96
97 dev_err(adev->dev, "Doesn't get TRN_MSG_ACK from pf in %d msec \n", NV_MAILBOX_POLL_ACK_TIMEDOUT);
98
99 return -ETIME;
100}
101
102static int xgpu_nv_poll_msg(struct amdgpu_device *adev, enum idh_event event)
103{
104 int r;
105 uint64_t timeout, now;
106
107 now = (uint64_t)ktime_to_ms(ktime_get());
108 timeout = now + NV_MAILBOX_POLL_MSG_TIMEDOUT;
109
110 do {
111 r = xgpu_nv_mailbox_rcv_msg(adev, event);
112 if (!r) {
113 dev_dbg(adev->dev, "rcv_msg 0x%x after %llu ms\n", event, NV_MAILBOX_POLL_MSG_TIMEDOUT - timeout + now);
114 return 0;
115 }
116
117 msleep(10);
118 now = (uint64_t)ktime_to_ms(ktime_get());
119 } while (timeout > now);
120
121 dev_dbg(adev->dev, "nv_poll_msg timed out\n");
122
123 return -ETIME;
124}
125
126static void xgpu_nv_mailbox_trans_msg (struct amdgpu_device *adev,
127 enum idh_request req, u32 data1, u32 data2, u32 data3)
128{
129 int r;
130 uint8_t trn;
131
132 /* IMPORTANT:
133 * clear TRN_MSG_VALID valid to clear host's RCV_MSG_ACK
134 * and with host's RCV_MSG_ACK cleared hw automatically clear host's RCV_MSG_ACK
135 * which lead to VF's TRN_MSG_ACK cleared, otherwise below xgpu_nv_poll_ack()
136 * will return immediatly
137 */
138 do {
139 xgpu_nv_mailbox_set_valid(adev, false);
140 trn = xgpu_nv_peek_ack(adev);
141 if (trn) {
142 dev_err_ratelimited(adev->dev, "trn=%x ACK should not assert! wait again !\n", trn);
143 msleep(1);
144 }
145 } while (trn);
146
147 dev_dbg(adev->dev, "trans_msg req = 0x%x, data1 = 0x%x\n", req, data1);
148 WREG32_NO_KIQ(mmMAILBOX_MSGBUF_TRN_DW0, req);
149 WREG32_NO_KIQ(mmMAILBOX_MSGBUF_TRN_DW1, data1);
150 WREG32_NO_KIQ(mmMAILBOX_MSGBUF_TRN_DW2, data2);
151 WREG32_NO_KIQ(mmMAILBOX_MSGBUF_TRN_DW3, data3);
152 xgpu_nv_mailbox_set_valid(adev, true);
153
154 /* start to poll ack */
155 r = xgpu_nv_poll_ack(adev);
156 if (r)
157 dev_err(adev->dev, "Doesn't get ack from pf, continue\n");
158
159 xgpu_nv_mailbox_set_valid(adev, false);
160}
161
162static int xgpu_nv_send_access_requests_with_param(struct amdgpu_device *adev,
163 enum idh_request req, u32 data1, u32 data2, u32 data3)
164{
165 int r, retry = 1;
166 enum idh_event event = -1;
167
168send_request:
169 xgpu_nv_mailbox_trans_msg(adev, req, data1, data2, data3);
170
171 switch (req) {
172 case IDH_REQ_GPU_INIT_ACCESS:
173 case IDH_REQ_GPU_FINI_ACCESS:
174 case IDH_REQ_GPU_RESET_ACCESS:
175 event = IDH_READY_TO_ACCESS_GPU;
176 break;
177 case IDH_REQ_GPU_INIT_DATA:
178 event = IDH_REQ_GPU_INIT_DATA_READY;
179 break;
180 case IDH_RAS_POISON:
181 if (data1 != 0)
182 event = IDH_RAS_POISON_READY;
183 break;
184 case IDH_REQ_RAS_ERROR_COUNT:
185 event = IDH_RAS_ERROR_COUNT_READY;
186 break;
187 default:
188 break;
189 }
190
191 if (event != -1) {
192 r = xgpu_nv_poll_msg(adev, event);
193 if (r) {
194 if (retry++ < 5)
195 goto send_request;
196
197 if (req != IDH_REQ_GPU_INIT_DATA) {
198 dev_err(adev->dev, "Doesn't get msg:%d from pf, error=%d\n", event, r);
199 return r;
200 } else /* host doesn't support REQ_GPU_INIT_DATA handshake */
201 adev->virt.req_init_data_ver = 0;
202 } else {
203 if (req == IDH_REQ_GPU_INIT_DATA) {
204 adev->virt.req_init_data_ver =
205 RREG32_NO_KIQ(mmMAILBOX_MSGBUF_RCV_DW1);
206
207 /* assume V1 in case host doesn't set version number */
208 if (adev->virt.req_init_data_ver < 1)
209 adev->virt.req_init_data_ver = 1;
210 }
211 }
212
213 /* Retrieve checksum from mailbox2 */
214 if (req == IDH_REQ_GPU_INIT_ACCESS || req == IDH_REQ_GPU_RESET_ACCESS) {
215 adev->virt.fw_reserve.checksum_key =
216 RREG32_NO_KIQ(mmMAILBOX_MSGBUF_RCV_DW2);
217 }
218 }
219
220 return 0;
221}
222
223static int xgpu_nv_send_access_requests(struct amdgpu_device *adev,
224 enum idh_request req)
225{
226 return xgpu_nv_send_access_requests_with_param(adev,
227 req, 0, 0, 0);
228}
229
230static int xgpu_nv_request_reset(struct amdgpu_device *adev)
231{
232 int ret, i = 0;
233
234 while (i < NV_MAILBOX_POLL_MSG_REP_MAX) {
235 ret = xgpu_nv_send_access_requests(adev, IDH_REQ_GPU_RESET_ACCESS);
236 if (!ret)
237 break;
238 i++;
239 }
240
241 return ret;
242}
243
244static int xgpu_nv_request_full_gpu_access(struct amdgpu_device *adev,
245 bool init)
246{
247 enum idh_request req;
248
249 req = init ? IDH_REQ_GPU_INIT_ACCESS : IDH_REQ_GPU_FINI_ACCESS;
250 return xgpu_nv_send_access_requests(adev, req);
251}
252
253static int xgpu_nv_release_full_gpu_access(struct amdgpu_device *adev,
254 bool init)
255{
256 enum idh_request req;
257 int r = 0;
258
259 req = init ? IDH_REL_GPU_INIT_ACCESS : IDH_REL_GPU_FINI_ACCESS;
260 r = xgpu_nv_send_access_requests(adev, req);
261
262 return r;
263}
264
265static int xgpu_nv_request_init_data(struct amdgpu_device *adev)
266{
267 return xgpu_nv_send_access_requests(adev, IDH_REQ_GPU_INIT_DATA);
268}
269
270static int xgpu_nv_mailbox_ack_irq(struct amdgpu_device *adev,
271 struct amdgpu_irq_src *source,
272 struct amdgpu_iv_entry *entry)
273{
274 dev_dbg(adev->dev, "get ack intr and do nothing.\n");
275 return 0;
276}
277
278static int xgpu_nv_set_mailbox_ack_irq(struct amdgpu_device *adev,
279 struct amdgpu_irq_src *source,
280 unsigned type,
281 enum amdgpu_interrupt_state state)
282{
283 u32 tmp = RREG32_NO_KIQ(mmMAILBOX_INT_CNTL);
284
285 if (state == AMDGPU_IRQ_STATE_ENABLE)
286 tmp |= 2;
287 else
288 tmp &= ~2;
289
290 WREG32_NO_KIQ(mmMAILBOX_INT_CNTL, tmp);
291
292 return 0;
293}
294
295static void xgpu_nv_ready_to_reset(struct amdgpu_device *adev)
296{
297 xgpu_nv_mailbox_trans_msg(adev, IDH_READY_TO_RESET, 0, 0, 0);
298}
299
300static int xgpu_nv_wait_reset(struct amdgpu_device *adev)
301{
302 int timeout = NV_MAILBOX_POLL_FLR_TIMEDOUT;
303 do {
304 if (xgpu_nv_mailbox_peek_msg(adev) == IDH_FLR_NOTIFICATION_CMPL) {
305 dev_dbg(adev->dev, "Got NV IDH_FLR_NOTIFICATION_CMPL after %d ms\n", NV_MAILBOX_POLL_FLR_TIMEDOUT - timeout);
306 return 0;
307 }
308 msleep(10);
309 timeout -= 10;
310 } while (timeout > 1);
311
312 dev_dbg(adev->dev, "waiting NV IDH_FLR_NOTIFICATION_CMPL timeout\n");
313 return -ETIME;
314}
315
316static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
317{
318 struct amdgpu_virt *virt = container_of(work, struct amdgpu_virt, flr_work);
319 struct amdgpu_device *adev = container_of(virt, struct amdgpu_device, virt);
320
321 amdgpu_virt_fini_data_exchange(adev);
322
323 /* Trigger recovery for world switch failure if no TDR */
324 if (amdgpu_device_should_recover_gpu(adev)
325 && (!amdgpu_device_has_job_running(adev) ||
326 adev->sdma_timeout == MAX_SCHEDULE_TIMEOUT ||
327 adev->gfx_timeout == MAX_SCHEDULE_TIMEOUT ||
328 adev->compute_timeout == MAX_SCHEDULE_TIMEOUT ||
329 adev->video_timeout == MAX_SCHEDULE_TIMEOUT)) {
330 struct amdgpu_reset_context reset_context;
331 memset(&reset_context, 0, sizeof(reset_context));
332
333 reset_context.method = AMD_RESET_METHOD_NONE;
334 reset_context.reset_req_dev = adev;
335 clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
336 set_bit(AMDGPU_HOST_FLR, &reset_context.flags);
337
338 amdgpu_device_gpu_recover(adev, NULL, &reset_context);
339 }
340}
341
342static int xgpu_nv_set_mailbox_rcv_irq(struct amdgpu_device *adev,
343 struct amdgpu_irq_src *src,
344 unsigned type,
345 enum amdgpu_interrupt_state state)
346{
347 u32 tmp = RREG32_NO_KIQ(mmMAILBOX_INT_CNTL);
348
349 if (state == AMDGPU_IRQ_STATE_ENABLE)
350 tmp |= 1;
351 else
352 tmp &= ~1;
353
354 WREG32_NO_KIQ(mmMAILBOX_INT_CNTL, tmp);
355
356 return 0;
357}
358
359static int xgpu_nv_mailbox_rcv_irq(struct amdgpu_device *adev,
360 struct amdgpu_irq_src *source,
361 struct amdgpu_iv_entry *entry)
362{
363 enum idh_event event = xgpu_nv_mailbox_peek_msg(adev);
364
365 switch (event) {
366 case IDH_FLR_NOTIFICATION:
367 if (amdgpu_sriov_runtime(adev))
368 WARN_ONCE(!amdgpu_reset_domain_schedule(adev->reset_domain,
369 &adev->virt.flr_work),
370 "Failed to queue work! at %s",
371 __func__);
372 break;
373 /* READY_TO_ACCESS_GPU is fetched by kernel polling, IRQ can ignore
374 * it byfar since that polling thread will handle it,
375 * other msg like flr complete is not handled here.
376 */
377 case IDH_CLR_MSG_BUF:
378 case IDH_FLR_NOTIFICATION_CMPL:
379 case IDH_READY_TO_ACCESS_GPU:
380 default:
381 break;
382 }
383
384 return 0;
385}
386
387static const struct amdgpu_irq_src_funcs xgpu_nv_mailbox_ack_irq_funcs = {
388 .set = xgpu_nv_set_mailbox_ack_irq,
389 .process = xgpu_nv_mailbox_ack_irq,
390};
391
392static const struct amdgpu_irq_src_funcs xgpu_nv_mailbox_rcv_irq_funcs = {
393 .set = xgpu_nv_set_mailbox_rcv_irq,
394 .process = xgpu_nv_mailbox_rcv_irq,
395};
396
397void xgpu_nv_mailbox_set_irq_funcs(struct amdgpu_device *adev)
398{
399 adev->virt.ack_irq.num_types = 1;
400 adev->virt.ack_irq.funcs = &xgpu_nv_mailbox_ack_irq_funcs;
401 adev->virt.rcv_irq.num_types = 1;
402 adev->virt.rcv_irq.funcs = &xgpu_nv_mailbox_rcv_irq_funcs;
403}
404
405int xgpu_nv_mailbox_add_irq_id(struct amdgpu_device *adev)
406{
407 int r;
408
409 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 135, &adev->virt.rcv_irq);
410 if (r)
411 return r;
412
413 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 138, &adev->virt.ack_irq);
414 if (r) {
415 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
416 return r;
417 }
418
419 return 0;
420}
421
422int xgpu_nv_mailbox_get_irq(struct amdgpu_device *adev)
423{
424 int r;
425
426 r = amdgpu_irq_get(adev, &adev->virt.rcv_irq, 0);
427 if (r)
428 return r;
429 r = amdgpu_irq_get(adev, &adev->virt.ack_irq, 0);
430 if (r) {
431 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
432 return r;
433 }
434
435 INIT_WORK(&adev->virt.flr_work, xgpu_nv_mailbox_flr_work);
436
437 return 0;
438}
439
440void xgpu_nv_mailbox_put_irq(struct amdgpu_device *adev)
441{
442 amdgpu_irq_put(adev, &adev->virt.ack_irq, 0);
443 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
444}
445
446static void xgpu_nv_ras_poison_handler(struct amdgpu_device *adev,
447 enum amdgpu_ras_block block)
448{
449 if (amdgpu_ip_version(adev, UMC_HWIP, 0) < IP_VERSION(12, 0, 0)) {
450 xgpu_nv_send_access_requests(adev, IDH_RAS_POISON);
451 } else {
452 amdgpu_virt_fini_data_exchange(adev);
453 xgpu_nv_send_access_requests_with_param(adev,
454 IDH_RAS_POISON, block, 0, 0);
455 }
456}
457
458static bool xgpu_nv_rcvd_ras_intr(struct amdgpu_device *adev)
459{
460 enum idh_event msg = xgpu_nv_mailbox_peek_msg(adev);
461
462 return (msg == IDH_RAS_ERROR_DETECTED || msg == 0xFFFFFFFF);
463}
464
465static int xgpu_nv_req_ras_err_count(struct amdgpu_device *adev)
466{
467 return xgpu_nv_send_access_requests(adev, IDH_REQ_RAS_ERROR_COUNT);
468}
469
470const struct amdgpu_virt_ops xgpu_nv_virt_ops = {
471 .req_full_gpu = xgpu_nv_request_full_gpu_access,
472 .rel_full_gpu = xgpu_nv_release_full_gpu_access,
473 .req_init_data = xgpu_nv_request_init_data,
474 .reset_gpu = xgpu_nv_request_reset,
475 .ready_to_reset = xgpu_nv_ready_to_reset,
476 .wait_reset = xgpu_nv_wait_reset,
477 .trans_msg = xgpu_nv_mailbox_trans_msg,
478 .ras_poison_handler = xgpu_nv_ras_poison_handler,
479 .rcvd_ras_intr = xgpu_nv_rcvd_ras_intr,
480 .req_ras_err_count = xgpu_nv_req_ras_err_count,
481};
1/*
2 * Copyright 2014 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23
24#include "amdgpu.h"
25#include "nbio/nbio_2_3_offset.h"
26#include "nbio/nbio_2_3_sh_mask.h"
27#include "gc/gc_10_1_0_offset.h"
28#include "gc/gc_10_1_0_sh_mask.h"
29#include "soc15.h"
30#include "navi10_ih.h"
31#include "soc15_common.h"
32#include "mxgpu_nv.h"
33
34static void xgpu_nv_mailbox_send_ack(struct amdgpu_device *adev)
35{
36 WREG8(NV_MAIBOX_CONTROL_RCV_OFFSET_BYTE, 2);
37}
38
39static void xgpu_nv_mailbox_set_valid(struct amdgpu_device *adev, bool val)
40{
41 WREG8(NV_MAIBOX_CONTROL_TRN_OFFSET_BYTE, val ? 1 : 0);
42}
43
44/*
45 * this peek_msg could *only* be called in IRQ routine becuase in IRQ routine
46 * RCV_MSG_VALID filed of BIF_BX_PF_MAILBOX_CONTROL must already be set to 1
47 * by host.
48 *
49 * if called no in IRQ routine, this peek_msg cannot guaranteed to return the
50 * correct value since it doesn't return the RCV_DW0 under the case that
51 * RCV_MSG_VALID is set by host.
52 */
53static enum idh_event xgpu_nv_mailbox_peek_msg(struct amdgpu_device *adev)
54{
55 return RREG32_NO_KIQ(mmMAILBOX_MSGBUF_RCV_DW0);
56}
57
58
59static int xgpu_nv_mailbox_rcv_msg(struct amdgpu_device *adev,
60 enum idh_event event)
61{
62 u32 reg;
63
64 reg = RREG32_NO_KIQ(mmMAILBOX_MSGBUF_RCV_DW0);
65 if (reg != event)
66 return -ENOENT;
67
68 xgpu_nv_mailbox_send_ack(adev);
69
70 return 0;
71}
72
73static uint8_t xgpu_nv_peek_ack(struct amdgpu_device *adev)
74{
75 return RREG8(NV_MAIBOX_CONTROL_TRN_OFFSET_BYTE) & 2;
76}
77
78static int xgpu_nv_poll_ack(struct amdgpu_device *adev)
79{
80 int timeout = NV_MAILBOX_POLL_ACK_TIMEDOUT;
81 u8 reg;
82
83 do {
84 reg = RREG8(NV_MAIBOX_CONTROL_TRN_OFFSET_BYTE);
85 if (reg & 2)
86 return 0;
87
88 mdelay(5);
89 timeout -= 5;
90 } while (timeout > 1);
91
92 pr_err("Doesn't get TRN_MSG_ACK from pf in %d msec\n", NV_MAILBOX_POLL_ACK_TIMEDOUT);
93
94 return -ETIME;
95}
96
97static int xgpu_nv_poll_msg(struct amdgpu_device *adev, enum idh_event event)
98{
99 int r, timeout = NV_MAILBOX_POLL_MSG_TIMEDOUT;
100
101 do {
102 r = xgpu_nv_mailbox_rcv_msg(adev, event);
103 if (!r)
104 return 0;
105
106 msleep(10);
107 timeout -= 10;
108 } while (timeout > 1);
109
110
111 return -ETIME;
112}
113
114static void xgpu_nv_mailbox_trans_msg (struct amdgpu_device *adev,
115 enum idh_request req, u32 data1, u32 data2, u32 data3)
116{
117 int r;
118 uint8_t trn;
119
120 /* IMPORTANT:
121 * clear TRN_MSG_VALID valid to clear host's RCV_MSG_ACK
122 * and with host's RCV_MSG_ACK cleared hw automatically clear host's RCV_MSG_ACK
123 * which lead to VF's TRN_MSG_ACK cleared, otherwise below xgpu_nv_poll_ack()
124 * will return immediatly
125 */
126 do {
127 xgpu_nv_mailbox_set_valid(adev, false);
128 trn = xgpu_nv_peek_ack(adev);
129 if (trn) {
130 pr_err("trn=%x ACK should not assert! wait again !\n", trn);
131 msleep(1);
132 }
133 } while (trn);
134
135 WREG32_NO_KIQ(mmMAILBOX_MSGBUF_TRN_DW0, req);
136 WREG32_NO_KIQ(mmMAILBOX_MSGBUF_TRN_DW1, data1);
137 WREG32_NO_KIQ(mmMAILBOX_MSGBUF_TRN_DW2, data2);
138 WREG32_NO_KIQ(mmMAILBOX_MSGBUF_TRN_DW3, data3);
139 xgpu_nv_mailbox_set_valid(adev, true);
140
141 /* start to poll ack */
142 r = xgpu_nv_poll_ack(adev);
143 if (r)
144 pr_err("Doesn't get ack from pf, continue\n");
145
146 xgpu_nv_mailbox_set_valid(adev, false);
147}
148
149static int xgpu_nv_send_access_requests(struct amdgpu_device *adev,
150 enum idh_request req)
151{
152 int r;
153 enum idh_event event = -1;
154
155 xgpu_nv_mailbox_trans_msg(adev, req, 0, 0, 0);
156
157 switch (req) {
158 case IDH_REQ_GPU_INIT_ACCESS:
159 case IDH_REQ_GPU_FINI_ACCESS:
160 case IDH_REQ_GPU_RESET_ACCESS:
161 event = IDH_READY_TO_ACCESS_GPU;
162 break;
163 case IDH_REQ_GPU_INIT_DATA:
164 event = IDH_REQ_GPU_INIT_DATA_READY;
165 break;
166 default:
167 break;
168 }
169
170 if (event != -1) {
171 r = xgpu_nv_poll_msg(adev, event);
172 if (r) {
173 if (req != IDH_REQ_GPU_INIT_DATA) {
174 pr_err("Doesn't get msg:%d from pf, error=%d\n", event, r);
175 return r;
176 }
177 else /* host doesn't support REQ_GPU_INIT_DATA handshake */
178 adev->virt.req_init_data_ver = 0;
179 } else {
180 if (req == IDH_REQ_GPU_INIT_DATA)
181 {
182 adev->virt.req_init_data_ver =
183 RREG32_NO_KIQ(mmMAILBOX_MSGBUF_RCV_DW1);
184
185 /* assume V1 in case host doesn't set version number */
186 if (adev->virt.req_init_data_ver < 1)
187 adev->virt.req_init_data_ver = 1;
188 }
189 }
190
191 /* Retrieve checksum from mailbox2 */
192 if (req == IDH_REQ_GPU_INIT_ACCESS || req == IDH_REQ_GPU_RESET_ACCESS) {
193 adev->virt.fw_reserve.checksum_key =
194 RREG32_NO_KIQ(mmMAILBOX_MSGBUF_RCV_DW2);
195 }
196 }
197
198 return 0;
199}
200
201static int xgpu_nv_request_reset(struct amdgpu_device *adev)
202{
203 return xgpu_nv_send_access_requests(adev, IDH_REQ_GPU_RESET_ACCESS);
204}
205
206static int xgpu_nv_request_full_gpu_access(struct amdgpu_device *adev,
207 bool init)
208{
209 enum idh_request req;
210
211 req = init ? IDH_REQ_GPU_INIT_ACCESS : IDH_REQ_GPU_FINI_ACCESS;
212 return xgpu_nv_send_access_requests(adev, req);
213}
214
215static int xgpu_nv_release_full_gpu_access(struct amdgpu_device *adev,
216 bool init)
217{
218 enum idh_request req;
219 int r = 0;
220
221 req = init ? IDH_REL_GPU_INIT_ACCESS : IDH_REL_GPU_FINI_ACCESS;
222 r = xgpu_nv_send_access_requests(adev, req);
223
224 return r;
225}
226
227static int xgpu_nv_request_init_data(struct amdgpu_device *adev)
228{
229 return xgpu_nv_send_access_requests(adev, IDH_REQ_GPU_INIT_DATA);
230}
231
232static int xgpu_nv_mailbox_ack_irq(struct amdgpu_device *adev,
233 struct amdgpu_irq_src *source,
234 struct amdgpu_iv_entry *entry)
235{
236 DRM_DEBUG("get ack intr and do nothing.\n");
237 return 0;
238}
239
240static int xgpu_nv_set_mailbox_ack_irq(struct amdgpu_device *adev,
241 struct amdgpu_irq_src *source,
242 unsigned type,
243 enum amdgpu_interrupt_state state)
244{
245 u32 tmp = RREG32_NO_KIQ(mmMAILBOX_INT_CNTL);
246
247 if (state == AMDGPU_IRQ_STATE_ENABLE)
248 tmp |= 2;
249 else
250 tmp &= ~2;
251
252 WREG32_NO_KIQ(mmMAILBOX_INT_CNTL, tmp);
253
254 return 0;
255}
256
257static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
258{
259 struct amdgpu_virt *virt = container_of(work, struct amdgpu_virt, flr_work);
260 struct amdgpu_device *adev = container_of(virt, struct amdgpu_device, virt);
261 int timeout = NV_MAILBOX_POLL_FLR_TIMEDOUT;
262 int locked;
263
264 /* block amdgpu_gpu_recover till msg FLR COMPLETE received,
265 * otherwise the mailbox msg will be ruined/reseted by
266 * the VF FLR.
267 *
268 * we can unlock the lock_reset to allow "amdgpu_job_timedout"
269 * to run gpu_recover() after FLR_NOTIFICATION_CMPL received
270 * which means host side had finished this VF's FLR.
271 */
272 locked = mutex_trylock(&adev->lock_reset);
273 if (locked)
274 adev->in_gpu_reset = true;
275
276 do {
277 if (xgpu_nv_mailbox_peek_msg(adev) == IDH_FLR_NOTIFICATION_CMPL)
278 goto flr_done;
279
280 msleep(10);
281 timeout -= 10;
282 } while (timeout > 1);
283
284flr_done:
285 if (locked) {
286 adev->in_gpu_reset = false;
287 mutex_unlock(&adev->lock_reset);
288 }
289
290 /* Trigger recovery for world switch failure if no TDR */
291 if (amdgpu_device_should_recover_gpu(adev)
292 && (adev->sdma_timeout == MAX_SCHEDULE_TIMEOUT ||
293 adev->gfx_timeout == MAX_SCHEDULE_TIMEOUT ||
294 adev->compute_timeout == MAX_SCHEDULE_TIMEOUT ||
295 adev->video_timeout == MAX_SCHEDULE_TIMEOUT))
296 amdgpu_device_gpu_recover(adev, NULL);
297}
298
299static int xgpu_nv_set_mailbox_rcv_irq(struct amdgpu_device *adev,
300 struct amdgpu_irq_src *src,
301 unsigned type,
302 enum amdgpu_interrupt_state state)
303{
304 u32 tmp = RREG32_NO_KIQ(mmMAILBOX_INT_CNTL);
305
306 if (state == AMDGPU_IRQ_STATE_ENABLE)
307 tmp |= 1;
308 else
309 tmp &= ~1;
310
311 WREG32_NO_KIQ(mmMAILBOX_INT_CNTL, tmp);
312
313 return 0;
314}
315
316static int xgpu_nv_mailbox_rcv_irq(struct amdgpu_device *adev,
317 struct amdgpu_irq_src *source,
318 struct amdgpu_iv_entry *entry)
319{
320 enum idh_event event = xgpu_nv_mailbox_peek_msg(adev);
321
322 switch (event) {
323 case IDH_FLR_NOTIFICATION:
324 if (amdgpu_sriov_runtime(adev))
325 schedule_work(&adev->virt.flr_work);
326 break;
327 /* READY_TO_ACCESS_GPU is fetched by kernel polling, IRQ can ignore
328 * it byfar since that polling thread will handle it,
329 * other msg like flr complete is not handled here.
330 */
331 case IDH_CLR_MSG_BUF:
332 case IDH_FLR_NOTIFICATION_CMPL:
333 case IDH_READY_TO_ACCESS_GPU:
334 default:
335 break;
336 }
337
338 return 0;
339}
340
341static const struct amdgpu_irq_src_funcs xgpu_nv_mailbox_ack_irq_funcs = {
342 .set = xgpu_nv_set_mailbox_ack_irq,
343 .process = xgpu_nv_mailbox_ack_irq,
344};
345
346static const struct amdgpu_irq_src_funcs xgpu_nv_mailbox_rcv_irq_funcs = {
347 .set = xgpu_nv_set_mailbox_rcv_irq,
348 .process = xgpu_nv_mailbox_rcv_irq,
349};
350
351void xgpu_nv_mailbox_set_irq_funcs(struct amdgpu_device *adev)
352{
353 adev->virt.ack_irq.num_types = 1;
354 adev->virt.ack_irq.funcs = &xgpu_nv_mailbox_ack_irq_funcs;
355 adev->virt.rcv_irq.num_types = 1;
356 adev->virt.rcv_irq.funcs = &xgpu_nv_mailbox_rcv_irq_funcs;
357}
358
359int xgpu_nv_mailbox_add_irq_id(struct amdgpu_device *adev)
360{
361 int r;
362
363 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 135, &adev->virt.rcv_irq);
364 if (r)
365 return r;
366
367 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 138, &adev->virt.ack_irq);
368 if (r) {
369 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
370 return r;
371 }
372
373 return 0;
374}
375
376int xgpu_nv_mailbox_get_irq(struct amdgpu_device *adev)
377{
378 int r;
379
380 r = amdgpu_irq_get(adev, &adev->virt.rcv_irq, 0);
381 if (r)
382 return r;
383 r = amdgpu_irq_get(adev, &adev->virt.ack_irq, 0);
384 if (r) {
385 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
386 return r;
387 }
388
389 INIT_WORK(&adev->virt.flr_work, xgpu_nv_mailbox_flr_work);
390
391 return 0;
392}
393
394void xgpu_nv_mailbox_put_irq(struct amdgpu_device *adev)
395{
396 amdgpu_irq_put(adev, &adev->virt.ack_irq, 0);
397 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
398}
399
400const struct amdgpu_virt_ops xgpu_nv_virt_ops = {
401 .req_full_gpu = xgpu_nv_request_full_gpu_access,
402 .rel_full_gpu = xgpu_nv_release_full_gpu_access,
403 .req_init_data = xgpu_nv_request_init_data,
404 .reset_gpu = xgpu_nv_request_reset,
405 .wait_reset = NULL,
406 .trans_msg = xgpu_nv_mailbox_trans_msg,
407};