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_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" 30 #include "soc15.h" 31 #include "vega10_ih.h" 32 #include "soc15_common.h" 33 #include "mxgpu_ai.h" 34 35 #include "amdgpu_reset.h" 36 37 static void xgpu_ai_mailbox_send_ack(struct amdgpu_device *adev) 38 { 39 WREG8(AI_MAIBOX_CONTROL_RCV_OFFSET_BYTE, 2); 40 } 41 42 static void xgpu_ai_mailbox_set_valid(struct amdgpu_device *adev, bool val) 43 { 44 WREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE, val ? 1 : 0); 45 } 46 47 /* 48 * this peek_msg could *only* be called in IRQ routine becuase in IRQ routine 49 * RCV_MSG_VALID filed of BIF_BX_PF0_MAILBOX_CONTROL must already be set to 1 50 * by host. 51 * 52 * if called no in IRQ routine, this peek_msg cannot guaranteed to return the 53 * correct value since it doesn't return the RCV_DW0 under the case that 54 * RCV_MSG_VALID is set by host. 55 */ 56 static enum idh_event xgpu_ai_mailbox_peek_msg(struct amdgpu_device *adev) 57 { 58 return RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, 59 mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW0)); 60 } 61 62 63 static int xgpu_ai_mailbox_rcv_msg(struct amdgpu_device *adev, 64 enum idh_event event) 65 { 66 u32 reg; 67 68 reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, 69 mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW0)); 70 if (reg != event) 71 return -ENOENT; 72 73 xgpu_ai_mailbox_send_ack(adev); 74 75 return 0; 76 } 77 78 static uint8_t xgpu_ai_peek_ack(struct amdgpu_device *adev) { 79 return RREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE) & 2; 80 } 81 82 static int xgpu_ai_poll_ack(struct amdgpu_device *adev) 83 { 84 int timeout = AI_MAILBOX_POLL_ACK_TIMEDOUT; 85 u8 reg; 86 87 do { 88 reg = RREG8(AI_MAIBOX_CONTROL_TRN_OFFSET_BYTE); 89 if (reg & 2) 90 return 0; 91 92 mdelay(5); 93 timeout -= 5; 94 } while (timeout > 1); 95 96 pr_err("Doesn't get TRN_MSG_ACK from pf in %d msec\n", AI_MAILBOX_POLL_ACK_TIMEDOUT); 97 98 return -ETIME; 99 } 100 101 static int xgpu_ai_poll_msg(struct amdgpu_device *adev, enum idh_event event) 102 { 103 int r, timeout = AI_MAILBOX_POLL_MSG_TIMEDOUT; 104 105 do { 106 r = xgpu_ai_mailbox_rcv_msg(adev, event); 107 if (!r) 108 return 0; 109 110 msleep(10); 111 timeout -= 10; 112 } while (timeout > 1); 113 114 pr_err("Doesn't get msg:%d from pf, error=%d\n", event, r); 115 116 return -ETIME; 117 } 118 119 static void xgpu_ai_mailbox_trans_msg (struct amdgpu_device *adev, 120 enum idh_request req, u32 data1, u32 data2, u32 data3) { 121 u32 reg; 122 int r; 123 uint8_t trn; 124 125 /* IMPORTANT: 126 * clear TRN_MSG_VALID valid to clear host's RCV_MSG_ACK 127 * and with host's RCV_MSG_ACK cleared hw automatically clear host's RCV_MSG_ACK 128 * which lead to VF's TRN_MSG_ACK cleared, otherwise below xgpu_ai_poll_ack() 129 * will return immediatly 130 */ 131 do { 132 xgpu_ai_mailbox_set_valid(adev, false); 133 trn = xgpu_ai_peek_ack(adev); 134 if (trn) { 135 pr_err("trn=%x ACK should not assert! wait again !\n", trn); 136 msleep(1); 137 } 138 } while(trn); 139 140 reg = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, 141 mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0)); 142 reg = REG_SET_FIELD(reg, BIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0, 143 MSGBUF_DATA, req); 144 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW0), 145 reg); 146 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW1), 147 data1); 148 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW2), 149 data2); 150 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_MSGBUF_TRN_DW3), 151 data3); 152 153 xgpu_ai_mailbox_set_valid(adev, true); 154 155 /* start to poll ack */ 156 r = xgpu_ai_poll_ack(adev); 157 if (r) 158 pr_err("Doesn't get ack from pf, continue\n"); 159 160 xgpu_ai_mailbox_set_valid(adev, false); 161 } 162 163 static int xgpu_ai_send_access_requests(struct amdgpu_device *adev, 164 enum idh_request req) 165 { 166 int r; 167 168 xgpu_ai_mailbox_trans_msg(adev, req, 0, 0, 0); 169 170 /* start to check msg if request is idh_req_gpu_init_access */ 171 if (req == IDH_REQ_GPU_INIT_ACCESS || 172 req == IDH_REQ_GPU_FINI_ACCESS || 173 req == IDH_REQ_GPU_RESET_ACCESS) { 174 r = xgpu_ai_poll_msg(adev, IDH_READY_TO_ACCESS_GPU); 175 if (r) { 176 pr_err("Doesn't get READY_TO_ACCESS_GPU from pf, give up\n"); 177 return r; 178 } 179 /* Retrieve checksum from mailbox2 */ 180 if (req == IDH_REQ_GPU_INIT_ACCESS || req == IDH_REQ_GPU_RESET_ACCESS) { 181 adev->virt.fw_reserve.checksum_key = 182 RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, 183 mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW2)); 184 } 185 } else if (req == IDH_REQ_GPU_INIT_DATA){ 186 /* Dummy REQ_GPU_INIT_DATA handling */ 187 r = xgpu_ai_poll_msg(adev, IDH_REQ_GPU_INIT_DATA_READY); 188 /* version set to 0 since dummy */ 189 adev->virt.req_init_data_ver = 0; 190 } 191 192 return 0; 193 } 194 195 static int xgpu_ai_request_reset(struct amdgpu_device *adev) 196 { 197 int ret, i = 0; 198 199 while (i < AI_MAILBOX_POLL_MSG_REP_MAX) { 200 ret = xgpu_ai_send_access_requests(adev, IDH_REQ_GPU_RESET_ACCESS); 201 if (!ret) 202 break; 203 i++; 204 } 205 206 return ret; 207 } 208 209 static int xgpu_ai_request_full_gpu_access(struct amdgpu_device *adev, 210 bool init) 211 { 212 enum idh_request req; 213 214 req = init ? IDH_REQ_GPU_INIT_ACCESS : IDH_REQ_GPU_FINI_ACCESS; 215 return xgpu_ai_send_access_requests(adev, req); 216 } 217 218 static int xgpu_ai_release_full_gpu_access(struct amdgpu_device *adev, 219 bool init) 220 { 221 enum idh_request req; 222 int r = 0; 223 224 req = init ? IDH_REL_GPU_INIT_ACCESS : IDH_REL_GPU_FINI_ACCESS; 225 r = xgpu_ai_send_access_requests(adev, req); 226 227 return r; 228 } 229 230 static int xgpu_ai_mailbox_ack_irq(struct amdgpu_device *adev, 231 struct amdgpu_irq_src *source, 232 struct amdgpu_iv_entry *entry) 233 { 234 DRM_DEBUG("get ack intr and do nothing.\n"); 235 return 0; 236 } 237 238 static int xgpu_ai_set_mailbox_ack_irq(struct amdgpu_device *adev, 239 struct amdgpu_irq_src *source, 240 unsigned type, 241 enum amdgpu_interrupt_state state) 242 { 243 u32 tmp = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL)); 244 245 tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_MAILBOX_INT_CNTL, ACK_INT_EN, 246 (state == AMDGPU_IRQ_STATE_ENABLE) ? 1 : 0); 247 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL), tmp); 248 249 return 0; 250 } 251 252 static void xgpu_ai_mailbox_flr_work(struct work_struct *work) 253 { 254 struct amdgpu_virt *virt = container_of(work, struct amdgpu_virt, flr_work); 255 struct amdgpu_device *adev = container_of(virt, struct amdgpu_device, virt); 256 int timeout = AI_MAILBOX_POLL_FLR_TIMEDOUT; 257 258 /* block amdgpu_gpu_recover till msg FLR COMPLETE received, 259 * otherwise the mailbox msg will be ruined/reseted by 260 * the VF FLR. 261 */ 262 if (atomic_cmpxchg(&adev->reset_domain->in_gpu_reset, 0, 1) != 0) 263 return; 264 265 down_write(&adev->reset_domain->sem); 266 267 amdgpu_virt_fini_data_exchange(adev); 268 269 xgpu_ai_mailbox_trans_msg(adev, IDH_READY_TO_RESET, 0, 0, 0); 270 271 do { 272 if (xgpu_ai_mailbox_peek_msg(adev) == IDH_FLR_NOTIFICATION_CMPL) 273 goto flr_done; 274 275 msleep(10); 276 timeout -= 10; 277 } while (timeout > 1); 278 279 flr_done: 280 atomic_set(&adev->reset_domain->in_gpu_reset, 0); 281 up_write(&adev->reset_domain->sem); 282 283 /* Trigger recovery for world switch failure if no TDR */ 284 if (amdgpu_device_should_recover_gpu(adev) 285 && (!amdgpu_device_has_job_running(adev) || 286 adev->sdma_timeout == MAX_SCHEDULE_TIMEOUT)) 287 amdgpu_device_gpu_recover_imp(adev, NULL); 288 } 289 290 static int xgpu_ai_set_mailbox_rcv_irq(struct amdgpu_device *adev, 291 struct amdgpu_irq_src *src, 292 unsigned type, 293 enum amdgpu_interrupt_state state) 294 { 295 u32 tmp = RREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL)); 296 297 tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_MAILBOX_INT_CNTL, VALID_INT_EN, 298 (state == AMDGPU_IRQ_STATE_ENABLE) ? 1 : 0); 299 WREG32_NO_KIQ(SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_MAILBOX_INT_CNTL), tmp); 300 301 return 0; 302 } 303 304 static int xgpu_ai_mailbox_rcv_irq(struct amdgpu_device *adev, 305 struct amdgpu_irq_src *source, 306 struct amdgpu_iv_entry *entry) 307 { 308 enum idh_event event = xgpu_ai_mailbox_peek_msg(adev); 309 310 switch (event) { 311 case IDH_FLR_NOTIFICATION: 312 if (amdgpu_sriov_runtime(adev) && !amdgpu_in_reset(adev)) 313 WARN_ONCE(!amdgpu_reset_domain_schedule(adev->reset_domain, 314 &adev->virt.flr_work), 315 "Failed to queue work! at %s", 316 __func__); 317 break; 318 case IDH_QUERY_ALIVE: 319 xgpu_ai_mailbox_send_ack(adev); 320 break; 321 /* READY_TO_ACCESS_GPU is fetched by kernel polling, IRQ can ignore 322 * it byfar since that polling thread will handle it, 323 * other msg like flr complete is not handled here. 324 */ 325 case IDH_CLR_MSG_BUF: 326 case IDH_FLR_NOTIFICATION_CMPL: 327 case IDH_READY_TO_ACCESS_GPU: 328 default: 329 break; 330 } 331 332 return 0; 333 } 334 335 static const struct amdgpu_irq_src_funcs xgpu_ai_mailbox_ack_irq_funcs = { 336 .set = xgpu_ai_set_mailbox_ack_irq, 337 .process = xgpu_ai_mailbox_ack_irq, 338 }; 339 340 static const struct amdgpu_irq_src_funcs xgpu_ai_mailbox_rcv_irq_funcs = { 341 .set = xgpu_ai_set_mailbox_rcv_irq, 342 .process = xgpu_ai_mailbox_rcv_irq, 343 }; 344 345 void xgpu_ai_mailbox_set_irq_funcs(struct amdgpu_device *adev) 346 { 347 adev->virt.ack_irq.num_types = 1; 348 adev->virt.ack_irq.funcs = &xgpu_ai_mailbox_ack_irq_funcs; 349 adev->virt.rcv_irq.num_types = 1; 350 adev->virt.rcv_irq.funcs = &xgpu_ai_mailbox_rcv_irq_funcs; 351 } 352 353 int xgpu_ai_mailbox_add_irq_id(struct amdgpu_device *adev) 354 { 355 int r; 356 357 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 135, &adev->virt.rcv_irq); 358 if (r) 359 return r; 360 361 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_BIF, 138, &adev->virt.ack_irq); 362 if (r) { 363 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0); 364 return r; 365 } 366 367 return 0; 368 } 369 370 int xgpu_ai_mailbox_get_irq(struct amdgpu_device *adev) 371 { 372 int r; 373 374 r = amdgpu_irq_get(adev, &adev->virt.rcv_irq, 0); 375 if (r) 376 return r; 377 r = amdgpu_irq_get(adev, &adev->virt.ack_irq, 0); 378 if (r) { 379 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0); 380 return r; 381 } 382 383 INIT_WORK(&adev->virt.flr_work, xgpu_ai_mailbox_flr_work); 384 385 return 0; 386 } 387 388 void xgpu_ai_mailbox_put_irq(struct amdgpu_device *adev) 389 { 390 amdgpu_irq_put(adev, &adev->virt.ack_irq, 0); 391 amdgpu_irq_put(adev, &adev->virt.rcv_irq, 0); 392 } 393 394 static int xgpu_ai_request_init_data(struct amdgpu_device *adev) 395 { 396 return xgpu_ai_send_access_requests(adev, IDH_REQ_GPU_INIT_DATA); 397 } 398 399 const struct amdgpu_virt_ops xgpu_ai_virt_ops = { 400 .req_full_gpu = xgpu_ai_request_full_gpu_access, 401 .rel_full_gpu = xgpu_ai_release_full_gpu_access, 402 .reset_gpu = xgpu_ai_request_reset, 403 .wait_reset = NULL, 404 .trans_msg = xgpu_ai_mailbox_trans_msg, 405 .req_init_data = xgpu_ai_request_init_data, 406 }; 407