2 * Copyright 2014 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
25 #include "nbio/nbio_6_1_offset.h"
26 #include "nbio/nbio_6_1_sh_mask.h"
27 #include "gc/gc_9_0_offset.h"
28 #include "gc/gc_9_0_sh_mask.h"
29 #include "mp/mp_9_0_offset.h"
31 #include "vega10_ih.h"
32 #include "soc15_common.h"
35 static void xgpu_ai_mailbox_send_ack(struct amdgpu_device *adev)
37 WREG8(AI_MAIBOX_CONTROL_RCV_OFFSET_BYTE, 2);
40 static void xgpu_ai_mailbox_set_valid(struct amdgpu_device *adev, bool val)
42 WREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE, val ? 1 : 0);
46 * this peek_msg could *only* be called in IRQ routine becuase in IRQ routine
47 * RCV_MSG_VALID filed of BIF_BX_PF0_MAILBOX_CONTROL must already be set to 1
50 * if called no in IRQ routine, this peek_msg cannot guaranteed to return the
51 * correct value since it doesn't return the RCV_DW0 under the case that
52 * RCV_MSG_VALID is set by host.
54 static enum idh_event xgpu_ai_mailbox_peek_msg(struct amdgpu_device *adev)
56 return RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
57 mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW0));
61 static int xgpu_ai_mailbox_rcv_msg(struct amdgpu_device *adev,
66 reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
67 mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW0));
71 xgpu_ai_mailbox_send_ack(adev);
76 static uint8_t xgpu_ai_peek_ack(struct amdgpu_device *adev) {
77 return RREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE) & 2;
80 static int xgpu_ai_poll_ack(struct amdgpu_device *adev)
82 int timeout = AI_MAILBOX_POLL_ACK_TIMEDOUT;
86 reg = RREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE);
92 } while (timeout > 1);
94 pr_err("Doesn't get TRN_MSG_ACK from pf in %d msec\n", AI_MAILBOX_POLL_ACK_TIMEDOUT);
99 static int xgpu_ai_poll_msg(struct amdgpu_device *adev, enum idh_event event)
101 int r, timeout = AI_MAILBOX_POLL_MSG_TIMEDOUT;
104 r = xgpu_ai_mailbox_rcv_msg(adev, event);
110 } while (timeout > 1);
112 pr_err("Doesn't get msg:%d from pf, error=%d\n", event, r);
117 static void xgpu_ai_mailbox_trans_msg (struct amdgpu_device *adev,
118 enum idh_request req, u32 data1, u32 data2, u32 data3) {
124 * clear TRN_MSG_VALID valid to clear host's RCV_MSG_ACK
125 * and with host's RCV_MSG_ACK cleared hw automatically clear host's RCV_MSG_ACK
126 * which lead to VF's TRN_MSG_ACK cleared, otherwise below xgpu_ai_poll_ack()
127 * will return immediatly
130 xgpu_ai_mailbox_set_valid(adev, false);
131 trn = xgpu_ai_peek_ack(adev);
133 pr_err("trn=%x ACK should not assert! wait again !\n", trn);
138 reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
139 mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0));
140 reg = REG_SET_FIELD(reg, BIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0,
142 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0),
144 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW1),
146 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW2),
148 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW3),
151 xgpu_ai_mailbox_set_valid(adev, true);
153 /* start to poll ack */
154 r = xgpu_ai_poll_ack(adev);
156 pr_err("Doesn't get ack from pf, continue\n");
158 xgpu_ai_mailbox_set_valid(adev, false);
161 static int xgpu_ai_send_access_requests(struct amdgpu_device *adev,
162 enum idh_request req)
166 xgpu_ai_mailbox_trans_msg(adev, req, 0, 0, 0);
168 /* start to check msg if request is idh_req_gpu_init_access */
169 if (req == IDH_REQ_GPU_INIT_ACCESS ||
170 req == IDH_REQ_GPU_FINI_ACCESS ||
171 req == IDH_REQ_GPU_RESET_ACCESS) {
172 r = xgpu_ai_poll_msg(adev, IDH_READY_TO_ACCESS_GPU);
174 pr_err("Doesn't get READY_TO_ACCESS_GPU from pf, give up\n");
177 /* Retrieve checksum from mailbox2 */
178 if (req == IDH_REQ_GPU_INIT_ACCESS || req == IDH_REQ_GPU_RESET_ACCESS) {
179 adev->virt.fw_reserve.checksum_key =
180 RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0,
181 mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW2));
188 static int xgpu_ai_request_reset(struct amdgpu_device *adev)
192 while (i < AI_MAILBOX_POLL_MSG_REP_MAX) {
193 ret = xgpu_ai_send_access_requests(adev, IDH_REQ_GPU_RESET_ACCESS);
202 static int xgpu_ai_request_full_gpu_access(struct amdgpu_device *adev,
205 enum idh_request req;
207 req = init ? IDH_REQ_GPU_INIT_ACCESS : IDH_REQ_GPU_FINI_ACCESS;
208 return xgpu_ai_send_access_requests(adev, req);
211 static int xgpu_ai_release_full_gpu_access(struct amdgpu_device *adev,
214 enum idh_request req;
217 req = init ? IDH_REL_GPU_INIT_ACCESS : IDH_REL_GPU_FINI_ACCESS;
218 r = xgpu_ai_send_access_requests(adev, req);
223 static int xgpu_ai_mailbox_ack_irq(struct amdgpu_device *adev,
224 struct amdgpu_irq_src *source,
225 struct amdgpu_iv_entry *entry)
227 DRM_DEBUG("get ack intr and do nothing.\n");
231 static int xgpu_ai_set_mailbox_ack_irq(struct amdgpu_device *adev,
232 struct amdgpu_irq_src *source,
234 enum amdgpu_interrupt_state state)
236 u32 tmp = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL));
238 tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_MAILBOX_INT_CNTL, ACK_INT_EN,
239 (state == AMDGPU_IRQ_STATE_ENABLE) ? 1 : 0);
240 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL), tmp);
245 static void xgpu_ai_mailbox_flr_work(struct work_struct *work)
247 struct amdgpu_virt *virt = container_of(work, struct amdgpu_virt, flr_work);
248 struct amdgpu_device *adev = container_of(virt, struct amdgpu_device, virt);
249 int timeout = AI_MAILBOX_POLL_FLR_TIMEDOUT;
251 /* block amdgpu_gpu_recover till msg FLR COMPLETE received,
252 * otherwise the mailbox msg will be ruined/reseted by
255 if (!down_read_trylock(&adev->reset_sem))
258 amdgpu_virt_fini_data_exchange(adev);
259 atomic_set(&adev->in_gpu_reset, 1);
262 if (xgpu_ai_mailbox_peek_msg(adev) == IDH_FLR_NOTIFICATION_CMPL)
267 } while (timeout > 1);
270 atomic_set(&adev->in_gpu_reset, 0);
271 up_read(&adev->reset_sem);
273 /* Trigger recovery for world switch failure if no TDR */
274 if (amdgpu_device_should_recover_gpu(adev)
275 && (!amdgpu_device_has_job_running(adev) ||
276 adev->sdma_timeout == MAX_SCHEDULE_TIMEOUT))
277 amdgpu_device_gpu_recover(adev, NULL);
280 static int xgpu_ai_set_mailbox_rcv_irq(struct amdgpu_device *adev,
281 struct amdgpu_irq_src *src,
283 enum amdgpu_interrupt_state state)
285 u32 tmp = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL));
287 tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_MAILBOX_INT_CNTL, VALID_INT_EN,
288 (state == AMDGPU_IRQ_STATE_ENABLE) ? 1 : 0);
289 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL), tmp);
294 static int xgpu_ai_mailbox_rcv_irq(struct amdgpu_device *adev,
295 struct amdgpu_irq_src *source,
296 struct amdgpu_iv_entry *entry)
298 enum idh_event event = xgpu_ai_mailbox_peek_msg(adev);
301 case IDH_FLR_NOTIFICATION:
302 if (amdgpu_sriov_runtime(adev))
303 schedule_work(&adev->virt.flr_work);
305 case IDH_QUERY_ALIVE:
306 xgpu_ai_mailbox_send_ack(adev);
308 /* READY_TO_ACCESS_GPU is fetched by kernel polling, IRQ can ignore
309 * it byfar since that polling thread will handle it,
310 * other msg like flr complete is not handled here.
312 case IDH_CLR_MSG_BUF:
313 case IDH_FLR_NOTIFICATION_CMPL:
314 case IDH_READY_TO_ACCESS_GPU:
322 static const struct amdgpu_irq_src_funcs xgpu_ai_mailbox_ack_irq_funcs = {
323 .set = xgpu_ai_set_mailbox_ack_irq,
324 .process = xgpu_ai_mailbox_ack_irq,
327 static const struct amdgpu_irq_src_funcs xgpu_ai_mailbox_rcv_irq_funcs = {
328 .set = xgpu_ai_set_mailbox_rcv_irq,
329 .process = xgpu_ai_mailbox_rcv_irq,
332 void xgpu_ai_mailbox_set_irq_funcs(struct amdgpu_device *adev)
334 adev->virt.ack_irq.num_types = 1;
335 adev->virt.ack_irq.funcs = &xgpu_ai_mailbox_ack_irq_funcs;
336 adev->virt.rcv_irq.num_types = 1;
337 adev->virt.rcv_irq.funcs = &xgpu_ai_mailbox_rcv_irq_funcs;
340 int xgpu_ai_mailbox_add_irq_id(struct amdgpu_device *adev)
344 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 135, &adev->virt.rcv_irq);
348 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 138, &adev->virt.ack_irq);
350 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
357 int xgpu_ai_mailbox_get_irq(struct amdgpu_device *adev)
361 r = amdgpu_irq_get(adev, &adev->virt.rcv_irq, 0);
364 r = amdgpu_irq_get(adev, &adev->virt.ack_irq, 0);
366 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
370 INIT_WORK(&adev->virt.flr_work, xgpu_ai_mailbox_flr_work);
375 void xgpu_ai_mailbox_put_irq(struct amdgpu_device *adev)
377 amdgpu_irq_put(adev, &adev->virt.ack_irq, 0);
378 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0);
381 const struct amdgpu_virt_ops xgpu_ai_virt_ops = {
382 .req_full_gpu = xgpu_ai_request_full_gpu_access,
383 .rel_full_gpu = xgpu_ai_release_full_gpu_access,
384 .reset_gpu = xgpu_ai_request_reset,
386 .trans_msg = xgpu_ai_mailbox_trans_msg,