1 /* 2 * Copyright 2015 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 * Authors: Alex Deucher 23 */ 24 25 #include "amdgpu.h" 26 #include "amdgpu_trace.h" 27 #include "si.h" 28 #include "sid.h" 29 30 const u32 sdma_offsets[SDMA_MAX_INSTANCE] = 31 { 32 DMA0_REGISTER_OFFSET, 33 DMA1_REGISTER_OFFSET 34 }; 35 36 static void si_dma_set_ring_funcs(struct amdgpu_device *adev); 37 static void si_dma_set_buffer_funcs(struct amdgpu_device *adev); 38 static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev); 39 static void si_dma_set_irq_funcs(struct amdgpu_device *adev); 40 41 static uint64_t si_dma_ring_get_rptr(struct amdgpu_ring *ring) 42 { 43 return *ring->rptr_cpu_addr; 44 } 45 46 static uint64_t si_dma_ring_get_wptr(struct amdgpu_ring *ring) 47 { 48 struct amdgpu_device *adev = ring->adev; 49 u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1; 50 51 return (RREG32(DMA_RB_WPTR + sdma_offsets[me]) & 0x3fffc) >> 2; 52 } 53 54 static void si_dma_ring_set_wptr(struct amdgpu_ring *ring) 55 { 56 struct amdgpu_device *adev = ring->adev; 57 u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1; 58 59 WREG32(DMA_RB_WPTR + sdma_offsets[me], (ring->wptr << 2) & 0x3fffc); 60 } 61 62 static void si_dma_ring_emit_ib(struct amdgpu_ring *ring, 63 struct amdgpu_job *job, 64 struct amdgpu_ib *ib, 65 uint32_t flags) 66 { 67 unsigned vmid = AMDGPU_JOB_GET_VMID(job); 68 /* The indirect buffer packet must end on an 8 DW boundary in the DMA ring. 69 * Pad as necessary with NOPs. 70 */ 71 while ((lower_32_bits(ring->wptr) & 7) != 5) 72 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0)); 73 amdgpu_ring_write(ring, DMA_IB_PACKET(DMA_PACKET_INDIRECT_BUFFER, vmid, 0)); 74 amdgpu_ring_write(ring, (ib->gpu_addr & 0xFFFFFFE0)); 75 amdgpu_ring_write(ring, (ib->length_dw << 12) | (upper_32_bits(ib->gpu_addr) & 0xFF)); 76 77 } 78 79 /** 80 * si_dma_ring_emit_fence - emit a fence on the DMA ring 81 * 82 * @ring: amdgpu ring pointer 83 * @addr: address 84 * @seq: sequence number 85 * @flags: fence related flags 86 * 87 * Add a DMA fence packet to the ring to write 88 * the fence seq number and DMA trap packet to generate 89 * an interrupt if needed (VI). 90 */ 91 static void si_dma_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq, 92 unsigned flags) 93 { 94 95 bool write64bit = flags & AMDGPU_FENCE_FLAG_64BIT; 96 /* write the fence */ 97 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0, 0, 0)); 98 amdgpu_ring_write(ring, addr & 0xfffffffc); 99 amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xff)); 100 amdgpu_ring_write(ring, seq); 101 /* optionally write high bits as well */ 102 if (write64bit) { 103 addr += 4; 104 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0, 0, 0)); 105 amdgpu_ring_write(ring, addr & 0xfffffffc); 106 amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xff)); 107 amdgpu_ring_write(ring, upper_32_bits(seq)); 108 } 109 /* generate an interrupt */ 110 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_TRAP, 0, 0, 0, 0)); 111 } 112 113 static void si_dma_stop(struct amdgpu_device *adev) 114 { 115 u32 rb_cntl; 116 unsigned i; 117 118 for (i = 0; i < adev->sdma.num_instances; i++) { 119 /* dma0 */ 120 rb_cntl = RREG32(DMA_RB_CNTL + sdma_offsets[i]); 121 rb_cntl &= ~DMA_RB_ENABLE; 122 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl); 123 } 124 } 125 126 static int si_dma_start(struct amdgpu_device *adev) 127 { 128 struct amdgpu_ring *ring; 129 u32 rb_cntl, dma_cntl, ib_cntl, rb_bufsz; 130 int i, r; 131 uint64_t rptr_addr; 132 133 for (i = 0; i < adev->sdma.num_instances; i++) { 134 ring = &adev->sdma.instance[i].ring; 135 136 WREG32(DMA_SEM_INCOMPLETE_TIMER_CNTL + sdma_offsets[i], 0); 137 WREG32(DMA_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0); 138 139 /* Set ring buffer size in dwords */ 140 rb_bufsz = order_base_2(ring->ring_size / 4); 141 rb_cntl = rb_bufsz << 1; 142 #ifdef __BIG_ENDIAN 143 rb_cntl |= DMA_RB_SWAP_ENABLE | DMA_RPTR_WRITEBACK_SWAP_ENABLE; 144 #endif 145 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl); 146 147 /* Initialize the ring buffer's read and write pointers */ 148 WREG32(DMA_RB_RPTR + sdma_offsets[i], 0); 149 WREG32(DMA_RB_WPTR + sdma_offsets[i], 0); 150 151 rptr_addr = ring->rptr_gpu_addr; 152 153 WREG32(DMA_RB_RPTR_ADDR_LO + sdma_offsets[i], lower_32_bits(rptr_addr)); 154 WREG32(DMA_RB_RPTR_ADDR_HI + sdma_offsets[i], upper_32_bits(rptr_addr) & 0xFF); 155 156 rb_cntl |= DMA_RPTR_WRITEBACK_ENABLE; 157 158 WREG32(DMA_RB_BASE + sdma_offsets[i], ring->gpu_addr >> 8); 159 160 /* enable DMA IBs */ 161 ib_cntl = DMA_IB_ENABLE | CMD_VMID_FORCE; 162 #ifdef __BIG_ENDIAN 163 ib_cntl |= DMA_IB_SWAP_ENABLE; 164 #endif 165 WREG32(DMA_IB_CNTL + sdma_offsets[i], ib_cntl); 166 167 dma_cntl = RREG32(DMA_CNTL + sdma_offsets[i]); 168 dma_cntl &= ~CTXEMPTY_INT_ENABLE; 169 WREG32(DMA_CNTL + sdma_offsets[i], dma_cntl); 170 171 ring->wptr = 0; 172 WREG32(DMA_RB_WPTR + sdma_offsets[i], ring->wptr << 2); 173 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl | DMA_RB_ENABLE); 174 175 r = amdgpu_ring_test_helper(ring); 176 if (r) 177 return r; 178 } 179 180 return 0; 181 } 182 183 /** 184 * si_dma_ring_test_ring - simple async dma engine test 185 * 186 * @ring: amdgpu_ring structure holding ring information 187 * 188 * Test the DMA engine by writing using it to write an 189 * value to memory. (VI). 190 * Returns 0 for success, error for failure. 191 */ 192 static int si_dma_ring_test_ring(struct amdgpu_ring *ring) 193 { 194 struct amdgpu_device *adev = ring->adev; 195 unsigned i; 196 unsigned index; 197 int r; 198 u32 tmp; 199 u64 gpu_addr; 200 201 r = amdgpu_device_wb_get(adev, &index); 202 if (r) 203 return r; 204 205 gpu_addr = adev->wb.gpu_addr + (index * 4); 206 tmp = 0xCAFEDEAD; 207 adev->wb.wb[index] = cpu_to_le32(tmp); 208 209 r = amdgpu_ring_alloc(ring, 4); 210 if (r) 211 goto error_free_wb; 212 213 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1)); 214 amdgpu_ring_write(ring, lower_32_bits(gpu_addr)); 215 amdgpu_ring_write(ring, upper_32_bits(gpu_addr) & 0xff); 216 amdgpu_ring_write(ring, 0xDEADBEEF); 217 amdgpu_ring_commit(ring); 218 219 for (i = 0; i < adev->usec_timeout; i++) { 220 tmp = le32_to_cpu(adev->wb.wb[index]); 221 if (tmp == 0xDEADBEEF) 222 break; 223 udelay(1); 224 } 225 226 if (i >= adev->usec_timeout) 227 r = -ETIMEDOUT; 228 229 error_free_wb: 230 amdgpu_device_wb_free(adev, index); 231 return r; 232 } 233 234 /** 235 * si_dma_ring_test_ib - test an IB on the DMA engine 236 * 237 * @ring: amdgpu_ring structure holding ring information 238 * @timeout: timeout value in jiffies, or MAX_SCHEDULE_TIMEOUT 239 * 240 * Test a simple IB in the DMA ring (VI). 241 * Returns 0 on success, error on failure. 242 */ 243 static int si_dma_ring_test_ib(struct amdgpu_ring *ring, long timeout) 244 { 245 struct amdgpu_device *adev = ring->adev; 246 struct amdgpu_ib ib; 247 struct dma_fence *f = NULL; 248 unsigned index; 249 u32 tmp = 0; 250 u64 gpu_addr; 251 long r; 252 253 r = amdgpu_device_wb_get(adev, &index); 254 if (r) 255 return r; 256 257 gpu_addr = adev->wb.gpu_addr + (index * 4); 258 tmp = 0xCAFEDEAD; 259 adev->wb.wb[index] = cpu_to_le32(tmp); 260 memset(&ib, 0, sizeof(ib)); 261 r = amdgpu_ib_get(adev, NULL, 256, 262 AMDGPU_IB_POOL_DIRECT, &ib); 263 if (r) 264 goto err0; 265 266 ib.ptr[0] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1); 267 ib.ptr[1] = lower_32_bits(gpu_addr); 268 ib.ptr[2] = upper_32_bits(gpu_addr) & 0xff; 269 ib.ptr[3] = 0xDEADBEEF; 270 ib.length_dw = 4; 271 r = amdgpu_ib_schedule(ring, 1, &ib, NULL, &f); 272 if (r) 273 goto err1; 274 275 r = dma_fence_wait_timeout(f, false, timeout); 276 if (r == 0) { 277 r = -ETIMEDOUT; 278 goto err1; 279 } else if (r < 0) { 280 goto err1; 281 } 282 tmp = le32_to_cpu(adev->wb.wb[index]); 283 if (tmp == 0xDEADBEEF) 284 r = 0; 285 else 286 r = -EINVAL; 287 288 err1: 289 amdgpu_ib_free(adev, &ib, NULL); 290 dma_fence_put(f); 291 err0: 292 amdgpu_device_wb_free(adev, index); 293 return r; 294 } 295 296 /** 297 * si_dma_vm_copy_pte - update PTEs by copying them from the GART 298 * 299 * @ib: indirect buffer to fill with commands 300 * @pe: addr of the page entry 301 * @src: src addr to copy from 302 * @count: number of page entries to update 303 * 304 * Update PTEs by copying them from the GART using DMA (SI). 305 */ 306 static void si_dma_vm_copy_pte(struct amdgpu_ib *ib, 307 uint64_t pe, uint64_t src, 308 unsigned count) 309 { 310 unsigned bytes = count * 8; 311 312 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY, 313 1, 0, 0, bytes); 314 ib->ptr[ib->length_dw++] = lower_32_bits(pe); 315 ib->ptr[ib->length_dw++] = lower_32_bits(src); 316 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; 317 ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff; 318 } 319 320 /** 321 * si_dma_vm_write_pte - update PTEs by writing them manually 322 * 323 * @ib: indirect buffer to fill with commands 324 * @pe: addr of the page entry 325 * @value: dst addr to write into pe 326 * @count: number of page entries to update 327 * @incr: increase next addr by incr bytes 328 * 329 * Update PTEs by writing them manually using DMA (SI). 330 */ 331 static void si_dma_vm_write_pte(struct amdgpu_ib *ib, uint64_t pe, 332 uint64_t value, unsigned count, 333 uint32_t incr) 334 { 335 unsigned ndw = count * 2; 336 337 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw); 338 ib->ptr[ib->length_dw++] = lower_32_bits(pe); 339 ib->ptr[ib->length_dw++] = upper_32_bits(pe); 340 for (; ndw > 0; ndw -= 2) { 341 ib->ptr[ib->length_dw++] = lower_32_bits(value); 342 ib->ptr[ib->length_dw++] = upper_32_bits(value); 343 value += incr; 344 } 345 } 346 347 /** 348 * si_dma_vm_set_pte_pde - update the page tables using sDMA 349 * 350 * @ib: indirect buffer to fill with commands 351 * @pe: addr of the page entry 352 * @addr: dst addr to write into pe 353 * @count: number of page entries to update 354 * @incr: increase next addr by incr bytes 355 * @flags: access flags 356 * 357 * Update the page tables using sDMA (CIK). 358 */ 359 static void si_dma_vm_set_pte_pde(struct amdgpu_ib *ib, 360 uint64_t pe, 361 uint64_t addr, unsigned count, 362 uint32_t incr, uint64_t flags) 363 { 364 uint64_t value; 365 unsigned ndw; 366 367 while (count) { 368 ndw = count * 2; 369 if (ndw > 0xFFFFE) 370 ndw = 0xFFFFE; 371 372 if (flags & AMDGPU_PTE_VALID) 373 value = addr; 374 else 375 value = 0; 376 377 /* for physically contiguous pages (vram) */ 378 ib->ptr[ib->length_dw++] = DMA_PTE_PDE_PACKET(ndw); 379 ib->ptr[ib->length_dw++] = pe; /* dst addr */ 380 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; 381 ib->ptr[ib->length_dw++] = lower_32_bits(flags); /* mask */ 382 ib->ptr[ib->length_dw++] = upper_32_bits(flags); 383 ib->ptr[ib->length_dw++] = value; /* value */ 384 ib->ptr[ib->length_dw++] = upper_32_bits(value); 385 ib->ptr[ib->length_dw++] = incr; /* increment size */ 386 ib->ptr[ib->length_dw++] = 0; 387 pe += ndw * 4; 388 addr += (ndw / 2) * incr; 389 count -= ndw / 2; 390 } 391 } 392 393 /** 394 * si_dma_ring_pad_ib - pad the IB to the required number of dw 395 * 396 * @ring: amdgpu_ring pointer 397 * @ib: indirect buffer to fill with padding 398 * 399 */ 400 static void si_dma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib) 401 { 402 while (ib->length_dw & 0x7) 403 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0); 404 } 405 406 /** 407 * si_dma_ring_emit_pipeline_sync - sync the pipeline 408 * 409 * @ring: amdgpu_ring pointer 410 * 411 * Make sure all previous operations are completed (CIK). 412 */ 413 static void si_dma_ring_emit_pipeline_sync(struct amdgpu_ring *ring) 414 { 415 uint32_t seq = ring->fence_drv.sync_seq; 416 uint64_t addr = ring->fence_drv.gpu_addr; 417 418 /* wait for idle */ 419 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0) | 420 (1 << 27)); /* Poll memory */ 421 amdgpu_ring_write(ring, lower_32_bits(addr)); 422 amdgpu_ring_write(ring, (0xff << 16) | upper_32_bits(addr)); /* retry, addr_hi */ 423 amdgpu_ring_write(ring, 0xffffffff); /* mask */ 424 amdgpu_ring_write(ring, seq); /* value */ 425 amdgpu_ring_write(ring, (3 << 28) | 0x20); /* func(equal) | poll interval */ 426 } 427 428 /** 429 * si_dma_ring_emit_vm_flush - cik vm flush using sDMA 430 * 431 * @ring: amdgpu_ring pointer 432 * @vmid: vmid number to use 433 * @pd_addr: address 434 * 435 * Update the page table base and flush the VM TLB 436 * using sDMA (VI). 437 */ 438 static void si_dma_ring_emit_vm_flush(struct amdgpu_ring *ring, 439 unsigned vmid, uint64_t pd_addr) 440 { 441 amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr); 442 443 /* wait for invalidate to complete */ 444 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0)); 445 amdgpu_ring_write(ring, VM_INVALIDATE_REQUEST); 446 amdgpu_ring_write(ring, 0xff << 16); /* retry */ 447 amdgpu_ring_write(ring, 1 << vmid); /* mask */ 448 amdgpu_ring_write(ring, 0); /* value */ 449 amdgpu_ring_write(ring, (0 << 28) | 0x20); /* func(always) | poll interval */ 450 } 451 452 static void si_dma_ring_emit_wreg(struct amdgpu_ring *ring, 453 uint32_t reg, uint32_t val) 454 { 455 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0)); 456 amdgpu_ring_write(ring, (0xf << 16) | reg); 457 amdgpu_ring_write(ring, val); 458 } 459 460 static int si_dma_early_init(void *handle) 461 { 462 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 463 464 adev->sdma.num_instances = 2; 465 466 si_dma_set_ring_funcs(adev); 467 si_dma_set_buffer_funcs(adev); 468 si_dma_set_vm_pte_funcs(adev); 469 si_dma_set_irq_funcs(adev); 470 471 return 0; 472 } 473 474 static int si_dma_sw_init(void *handle) 475 { 476 struct amdgpu_ring *ring; 477 int r, i; 478 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 479 480 /* DMA0 trap event */ 481 r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 224, 482 &adev->sdma.trap_irq); 483 if (r) 484 return r; 485 486 /* DMA1 trap event */ 487 r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 244, 488 &adev->sdma.trap_irq); 489 if (r) 490 return r; 491 492 for (i = 0; i < adev->sdma.num_instances; i++) { 493 ring = &adev->sdma.instance[i].ring; 494 ring->ring_obj = NULL; 495 ring->use_doorbell = false; 496 sprintf(ring->name, "sdma%d", i); 497 r = amdgpu_ring_init(adev, ring, 1024, 498 &adev->sdma.trap_irq, 499 (i == 0) ? AMDGPU_SDMA_IRQ_INSTANCE0 : 500 AMDGPU_SDMA_IRQ_INSTANCE1, 501 AMDGPU_RING_PRIO_DEFAULT, NULL); 502 if (r) 503 return r; 504 } 505 506 return r; 507 } 508 509 static int si_dma_sw_fini(void *handle) 510 { 511 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 512 int i; 513 514 for (i = 0; i < adev->sdma.num_instances; i++) 515 amdgpu_ring_fini(&adev->sdma.instance[i].ring); 516 517 return 0; 518 } 519 520 static int si_dma_hw_init(void *handle) 521 { 522 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 523 524 return si_dma_start(adev); 525 } 526 527 static int si_dma_hw_fini(void *handle) 528 { 529 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 530 531 si_dma_stop(adev); 532 533 return 0; 534 } 535 536 static int si_dma_suspend(void *handle) 537 { 538 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 539 540 return si_dma_hw_fini(adev); 541 } 542 543 static int si_dma_resume(void *handle) 544 { 545 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 546 547 return si_dma_hw_init(adev); 548 } 549 550 static bool si_dma_is_idle(void *handle) 551 { 552 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 553 u32 tmp = RREG32(SRBM_STATUS2); 554 555 if (tmp & (DMA_BUSY_MASK | DMA1_BUSY_MASK)) 556 return false; 557 558 return true; 559 } 560 561 static int si_dma_wait_for_idle(void *handle) 562 { 563 unsigned i; 564 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 565 566 for (i = 0; i < adev->usec_timeout; i++) { 567 if (si_dma_is_idle(handle)) 568 return 0; 569 udelay(1); 570 } 571 return -ETIMEDOUT; 572 } 573 574 static int si_dma_soft_reset(void *handle) 575 { 576 DRM_INFO("si_dma_soft_reset --- not implemented !!!!!!!\n"); 577 return 0; 578 } 579 580 static int si_dma_set_trap_irq_state(struct amdgpu_device *adev, 581 struct amdgpu_irq_src *src, 582 unsigned type, 583 enum amdgpu_interrupt_state state) 584 { 585 u32 sdma_cntl; 586 587 switch (type) { 588 case AMDGPU_SDMA_IRQ_INSTANCE0: 589 switch (state) { 590 case AMDGPU_IRQ_STATE_DISABLE: 591 sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET); 592 sdma_cntl &= ~TRAP_ENABLE; 593 WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl); 594 break; 595 case AMDGPU_IRQ_STATE_ENABLE: 596 sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET); 597 sdma_cntl |= TRAP_ENABLE; 598 WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl); 599 break; 600 default: 601 break; 602 } 603 break; 604 case AMDGPU_SDMA_IRQ_INSTANCE1: 605 switch (state) { 606 case AMDGPU_IRQ_STATE_DISABLE: 607 sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET); 608 sdma_cntl &= ~TRAP_ENABLE; 609 WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl); 610 break; 611 case AMDGPU_IRQ_STATE_ENABLE: 612 sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET); 613 sdma_cntl |= TRAP_ENABLE; 614 WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl); 615 break; 616 default: 617 break; 618 } 619 break; 620 default: 621 break; 622 } 623 return 0; 624 } 625 626 static int si_dma_process_trap_irq(struct amdgpu_device *adev, 627 struct amdgpu_irq_src *source, 628 struct amdgpu_iv_entry *entry) 629 { 630 if (entry->src_id == 224) 631 amdgpu_fence_process(&adev->sdma.instance[0].ring); 632 else 633 amdgpu_fence_process(&adev->sdma.instance[1].ring); 634 return 0; 635 } 636 637 static int si_dma_set_clockgating_state(void *handle, 638 enum amd_clockgating_state state) 639 { 640 u32 orig, data, offset; 641 int i; 642 bool enable; 643 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 644 645 enable = (state == AMD_CG_STATE_GATE); 646 647 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) { 648 for (i = 0; i < adev->sdma.num_instances; i++) { 649 if (i == 0) 650 offset = DMA0_REGISTER_OFFSET; 651 else 652 offset = DMA1_REGISTER_OFFSET; 653 orig = data = RREG32(DMA_POWER_CNTL + offset); 654 data &= ~MEM_POWER_OVERRIDE; 655 if (data != orig) 656 WREG32(DMA_POWER_CNTL + offset, data); 657 WREG32(DMA_CLK_CTRL + offset, 0x00000100); 658 } 659 } else { 660 for (i = 0; i < adev->sdma.num_instances; i++) { 661 if (i == 0) 662 offset = DMA0_REGISTER_OFFSET; 663 else 664 offset = DMA1_REGISTER_OFFSET; 665 orig = data = RREG32(DMA_POWER_CNTL + offset); 666 data |= MEM_POWER_OVERRIDE; 667 if (data != orig) 668 WREG32(DMA_POWER_CNTL + offset, data); 669 670 orig = data = RREG32(DMA_CLK_CTRL + offset); 671 data = 0xff000000; 672 if (data != orig) 673 WREG32(DMA_CLK_CTRL + offset, data); 674 } 675 } 676 677 return 0; 678 } 679 680 static int si_dma_set_powergating_state(void *handle, 681 enum amd_powergating_state state) 682 { 683 u32 tmp; 684 685 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 686 687 WREG32(DMA_PGFSM_WRITE, 0x00002000); 688 WREG32(DMA_PGFSM_CONFIG, 0x100010ff); 689 690 for (tmp = 0; tmp < 5; tmp++) 691 WREG32(DMA_PGFSM_WRITE, 0); 692 693 return 0; 694 } 695 696 static const struct amd_ip_funcs si_dma_ip_funcs = { 697 .name = "si_dma", 698 .early_init = si_dma_early_init, 699 .late_init = NULL, 700 .sw_init = si_dma_sw_init, 701 .sw_fini = si_dma_sw_fini, 702 .hw_init = si_dma_hw_init, 703 .hw_fini = si_dma_hw_fini, 704 .suspend = si_dma_suspend, 705 .resume = si_dma_resume, 706 .is_idle = si_dma_is_idle, 707 .wait_for_idle = si_dma_wait_for_idle, 708 .soft_reset = si_dma_soft_reset, 709 .set_clockgating_state = si_dma_set_clockgating_state, 710 .set_powergating_state = si_dma_set_powergating_state, 711 .dump_ip_state = NULL, 712 .print_ip_state = NULL, 713 }; 714 715 static const struct amdgpu_ring_funcs si_dma_ring_funcs = { 716 .type = AMDGPU_RING_TYPE_SDMA, 717 .align_mask = 0xf, 718 .nop = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0), 719 .support_64bit_ptrs = false, 720 .get_rptr = si_dma_ring_get_rptr, 721 .get_wptr = si_dma_ring_get_wptr, 722 .set_wptr = si_dma_ring_set_wptr, 723 .emit_frame_size = 724 3 + 3 + /* hdp flush / invalidate */ 725 6 + /* si_dma_ring_emit_pipeline_sync */ 726 SI_FLUSH_GPU_TLB_NUM_WREG * 3 + 6 + /* si_dma_ring_emit_vm_flush */ 727 9 + 9 + 9, /* si_dma_ring_emit_fence x3 for user fence, vm fence */ 728 .emit_ib_size = 7 + 3, /* si_dma_ring_emit_ib */ 729 .emit_ib = si_dma_ring_emit_ib, 730 .emit_fence = si_dma_ring_emit_fence, 731 .emit_pipeline_sync = si_dma_ring_emit_pipeline_sync, 732 .emit_vm_flush = si_dma_ring_emit_vm_flush, 733 .test_ring = si_dma_ring_test_ring, 734 .test_ib = si_dma_ring_test_ib, 735 .insert_nop = amdgpu_ring_insert_nop, 736 .pad_ib = si_dma_ring_pad_ib, 737 .emit_wreg = si_dma_ring_emit_wreg, 738 }; 739 740 static void si_dma_set_ring_funcs(struct amdgpu_device *adev) 741 { 742 int i; 743 744 for (i = 0; i < adev->sdma.num_instances; i++) 745 adev->sdma.instance[i].ring.funcs = &si_dma_ring_funcs; 746 } 747 748 static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs = { 749 .set = si_dma_set_trap_irq_state, 750 .process = si_dma_process_trap_irq, 751 }; 752 753 static void si_dma_set_irq_funcs(struct amdgpu_device *adev) 754 { 755 adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST; 756 adev->sdma.trap_irq.funcs = &si_dma_trap_irq_funcs; 757 } 758 759 /** 760 * si_dma_emit_copy_buffer - copy buffer using the sDMA engine 761 * 762 * @ib: indirect buffer to copy to 763 * @src_offset: src GPU address 764 * @dst_offset: dst GPU address 765 * @byte_count: number of bytes to xfer 766 * @copy_flags: unused 767 * 768 * Copy GPU buffers using the DMA engine (VI). 769 * Used by the amdgpu ttm implementation to move pages if 770 * registered as the asic copy callback. 771 */ 772 static void si_dma_emit_copy_buffer(struct amdgpu_ib *ib, 773 uint64_t src_offset, 774 uint64_t dst_offset, 775 uint32_t byte_count, 776 uint32_t copy_flags) 777 { 778 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY, 779 1, 0, 0, byte_count); 780 ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset); 781 ib->ptr[ib->length_dw++] = lower_32_bits(src_offset); 782 ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) & 0xff; 783 ib->ptr[ib->length_dw++] = upper_32_bits(src_offset) & 0xff; 784 } 785 786 /** 787 * si_dma_emit_fill_buffer - fill buffer using the sDMA engine 788 * 789 * @ib: indirect buffer to copy to 790 * @src_data: value to write to buffer 791 * @dst_offset: dst GPU address 792 * @byte_count: number of bytes to xfer 793 * 794 * Fill GPU buffers using the DMA engine (VI). 795 */ 796 static void si_dma_emit_fill_buffer(struct amdgpu_ib *ib, 797 uint32_t src_data, 798 uint64_t dst_offset, 799 uint32_t byte_count) 800 { 801 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_CONSTANT_FILL, 802 0, 0, 0, byte_count / 4); 803 ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset); 804 ib->ptr[ib->length_dw++] = src_data; 805 ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) << 16; 806 } 807 808 809 static const struct amdgpu_buffer_funcs si_dma_buffer_funcs = { 810 .copy_max_bytes = 0xffff8, 811 .copy_num_dw = 5, 812 .emit_copy_buffer = si_dma_emit_copy_buffer, 813 814 .fill_max_bytes = 0xffff8, 815 .fill_num_dw = 4, 816 .emit_fill_buffer = si_dma_emit_fill_buffer, 817 }; 818 819 static void si_dma_set_buffer_funcs(struct amdgpu_device *adev) 820 { 821 adev->mman.buffer_funcs = &si_dma_buffer_funcs; 822 adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring; 823 } 824 825 static const struct amdgpu_vm_pte_funcs si_dma_vm_pte_funcs = { 826 .copy_pte_num_dw = 5, 827 .copy_pte = si_dma_vm_copy_pte, 828 829 .write_pte = si_dma_vm_write_pte, 830 .set_pte_pde = si_dma_vm_set_pte_pde, 831 }; 832 833 static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev) 834 { 835 unsigned i; 836 837 adev->vm_manager.vm_pte_funcs = &si_dma_vm_pte_funcs; 838 for (i = 0; i < adev->sdma.num_instances; i++) { 839 adev->vm_manager.vm_pte_scheds[i] = 840 &adev->sdma.instance[i].ring.sched; 841 } 842 adev->vm_manager.vm_pte_num_scheds = adev->sdma.num_instances; 843 } 844 845 const struct amdgpu_ip_block_version si_dma_ip_block = 846 { 847 .type = AMD_IP_BLOCK_TYPE_SDMA, 848 .major = 1, 849 .minor = 0, 850 .rev = 0, 851 .funcs = &si_dma_ip_funcs, 852 }; 853