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(struct amdgpu_ip_block *ip_block) 461 { 462 struct amdgpu_device *adev = ip_block->adev; 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(struct amdgpu_ip_block *ip_block) 475 { 476 struct amdgpu_ring *ring; 477 int r, i; 478 struct amdgpu_device *adev = ip_block->adev; 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(struct amdgpu_ip_block *ip_block) 510 { 511 struct amdgpu_device *adev = ip_block->adev; 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(struct amdgpu_ip_block *ip_block) 521 { 522 struct amdgpu_device *adev = ip_block->adev; 523 524 return si_dma_start(adev); 525 } 526 527 static int si_dma_hw_fini(struct amdgpu_ip_block *ip_block) 528 { 529 si_dma_stop(ip_block->adev); 530 531 return 0; 532 } 533 534 static int si_dma_suspend(struct amdgpu_ip_block *ip_block) 535 { 536 return si_dma_hw_fini(ip_block); 537 } 538 539 static int si_dma_resume(struct amdgpu_ip_block *ip_block) 540 { 541 return si_dma_hw_init(ip_block); 542 } 543 544 static bool si_dma_is_idle(void *handle) 545 { 546 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 547 548 u32 tmp = RREG32(SRBM_STATUS2); 549 550 if (tmp & (DMA_BUSY_MASK | DMA1_BUSY_MASK)) 551 return false; 552 553 return true; 554 } 555 556 static int si_dma_wait_for_idle(struct amdgpu_ip_block *ip_block) 557 { 558 unsigned i; 559 struct amdgpu_device *adev = ip_block->adev; 560 561 for (i = 0; i < adev->usec_timeout; i++) { 562 if (si_dma_is_idle(adev)) 563 return 0; 564 udelay(1); 565 } 566 return -ETIMEDOUT; 567 } 568 569 static int si_dma_soft_reset(struct amdgpu_ip_block *ip_block) 570 { 571 DRM_INFO("si_dma_soft_reset --- not implemented !!!!!!!\n"); 572 return 0; 573 } 574 575 static int si_dma_set_trap_irq_state(struct amdgpu_device *adev, 576 struct amdgpu_irq_src *src, 577 unsigned type, 578 enum amdgpu_interrupt_state state) 579 { 580 u32 sdma_cntl; 581 582 switch (type) { 583 case AMDGPU_SDMA_IRQ_INSTANCE0: 584 switch (state) { 585 case AMDGPU_IRQ_STATE_DISABLE: 586 sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET); 587 sdma_cntl &= ~TRAP_ENABLE; 588 WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl); 589 break; 590 case AMDGPU_IRQ_STATE_ENABLE: 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 default: 596 break; 597 } 598 break; 599 case AMDGPU_SDMA_IRQ_INSTANCE1: 600 switch (state) { 601 case AMDGPU_IRQ_STATE_DISABLE: 602 sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET); 603 sdma_cntl &= ~TRAP_ENABLE; 604 WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl); 605 break; 606 case AMDGPU_IRQ_STATE_ENABLE: 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 default: 612 break; 613 } 614 break; 615 default: 616 break; 617 } 618 return 0; 619 } 620 621 static int si_dma_process_trap_irq(struct amdgpu_device *adev, 622 struct amdgpu_irq_src *source, 623 struct amdgpu_iv_entry *entry) 624 { 625 if (entry->src_id == 224) 626 amdgpu_fence_process(&adev->sdma.instance[0].ring); 627 else 628 amdgpu_fence_process(&adev->sdma.instance[1].ring); 629 return 0; 630 } 631 632 static int si_dma_set_clockgating_state(void *handle, 633 enum amd_clockgating_state state) 634 { 635 u32 orig, data, offset; 636 int i; 637 bool enable; 638 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 639 640 enable = (state == AMD_CG_STATE_GATE); 641 642 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) { 643 for (i = 0; i < adev->sdma.num_instances; i++) { 644 if (i == 0) 645 offset = DMA0_REGISTER_OFFSET; 646 else 647 offset = DMA1_REGISTER_OFFSET; 648 orig = data = RREG32(DMA_POWER_CNTL + offset); 649 data &= ~MEM_POWER_OVERRIDE; 650 if (data != orig) 651 WREG32(DMA_POWER_CNTL + offset, data); 652 WREG32(DMA_CLK_CTRL + offset, 0x00000100); 653 } 654 } else { 655 for (i = 0; i < adev->sdma.num_instances; i++) { 656 if (i == 0) 657 offset = DMA0_REGISTER_OFFSET; 658 else 659 offset = DMA1_REGISTER_OFFSET; 660 orig = data = RREG32(DMA_POWER_CNTL + offset); 661 data |= MEM_POWER_OVERRIDE; 662 if (data != orig) 663 WREG32(DMA_POWER_CNTL + offset, data); 664 665 orig = data = RREG32(DMA_CLK_CTRL + offset); 666 data = 0xff000000; 667 if (data != orig) 668 WREG32(DMA_CLK_CTRL + offset, data); 669 } 670 } 671 672 return 0; 673 } 674 675 static int si_dma_set_powergating_state(void *handle, 676 enum amd_powergating_state state) 677 { 678 u32 tmp; 679 680 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 681 682 WREG32(DMA_PGFSM_WRITE, 0x00002000); 683 WREG32(DMA_PGFSM_CONFIG, 0x100010ff); 684 685 for (tmp = 0; tmp < 5; tmp++) 686 WREG32(DMA_PGFSM_WRITE, 0); 687 688 return 0; 689 } 690 691 static const struct amd_ip_funcs si_dma_ip_funcs = { 692 .name = "si_dma", 693 .early_init = si_dma_early_init, 694 .sw_init = si_dma_sw_init, 695 .sw_fini = si_dma_sw_fini, 696 .hw_init = si_dma_hw_init, 697 .hw_fini = si_dma_hw_fini, 698 .suspend = si_dma_suspend, 699 .resume = si_dma_resume, 700 .is_idle = si_dma_is_idle, 701 .wait_for_idle = si_dma_wait_for_idle, 702 .soft_reset = si_dma_soft_reset, 703 .set_clockgating_state = si_dma_set_clockgating_state, 704 .set_powergating_state = si_dma_set_powergating_state, 705 }; 706 707 static const struct amdgpu_ring_funcs si_dma_ring_funcs = { 708 .type = AMDGPU_RING_TYPE_SDMA, 709 .align_mask = 0xf, 710 .nop = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0), 711 .support_64bit_ptrs = false, 712 .get_rptr = si_dma_ring_get_rptr, 713 .get_wptr = si_dma_ring_get_wptr, 714 .set_wptr = si_dma_ring_set_wptr, 715 .emit_frame_size = 716 3 + 3 + /* hdp flush / invalidate */ 717 6 + /* si_dma_ring_emit_pipeline_sync */ 718 SI_FLUSH_GPU_TLB_NUM_WREG * 3 + 6 + /* si_dma_ring_emit_vm_flush */ 719 9 + 9 + 9, /* si_dma_ring_emit_fence x3 for user fence, vm fence */ 720 .emit_ib_size = 7 + 3, /* si_dma_ring_emit_ib */ 721 .emit_ib = si_dma_ring_emit_ib, 722 .emit_fence = si_dma_ring_emit_fence, 723 .emit_pipeline_sync = si_dma_ring_emit_pipeline_sync, 724 .emit_vm_flush = si_dma_ring_emit_vm_flush, 725 .test_ring = si_dma_ring_test_ring, 726 .test_ib = si_dma_ring_test_ib, 727 .insert_nop = amdgpu_ring_insert_nop, 728 .pad_ib = si_dma_ring_pad_ib, 729 .emit_wreg = si_dma_ring_emit_wreg, 730 }; 731 732 static void si_dma_set_ring_funcs(struct amdgpu_device *adev) 733 { 734 int i; 735 736 for (i = 0; i < adev->sdma.num_instances; i++) 737 adev->sdma.instance[i].ring.funcs = &si_dma_ring_funcs; 738 } 739 740 static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs = { 741 .set = si_dma_set_trap_irq_state, 742 .process = si_dma_process_trap_irq, 743 }; 744 745 static void si_dma_set_irq_funcs(struct amdgpu_device *adev) 746 { 747 adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST; 748 adev->sdma.trap_irq.funcs = &si_dma_trap_irq_funcs; 749 } 750 751 /** 752 * si_dma_emit_copy_buffer - copy buffer using the sDMA engine 753 * 754 * @ib: indirect buffer to copy to 755 * @src_offset: src GPU address 756 * @dst_offset: dst GPU address 757 * @byte_count: number of bytes to xfer 758 * @copy_flags: unused 759 * 760 * Copy GPU buffers using the DMA engine (VI). 761 * Used by the amdgpu ttm implementation to move pages if 762 * registered as the asic copy callback. 763 */ 764 static void si_dma_emit_copy_buffer(struct amdgpu_ib *ib, 765 uint64_t src_offset, 766 uint64_t dst_offset, 767 uint32_t byte_count, 768 uint32_t copy_flags) 769 { 770 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY, 771 1, 0, 0, byte_count); 772 ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset); 773 ib->ptr[ib->length_dw++] = lower_32_bits(src_offset); 774 ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) & 0xff; 775 ib->ptr[ib->length_dw++] = upper_32_bits(src_offset) & 0xff; 776 } 777 778 /** 779 * si_dma_emit_fill_buffer - fill buffer using the sDMA engine 780 * 781 * @ib: indirect buffer to copy to 782 * @src_data: value to write to buffer 783 * @dst_offset: dst GPU address 784 * @byte_count: number of bytes to xfer 785 * 786 * Fill GPU buffers using the DMA engine (VI). 787 */ 788 static void si_dma_emit_fill_buffer(struct amdgpu_ib *ib, 789 uint32_t src_data, 790 uint64_t dst_offset, 791 uint32_t byte_count) 792 { 793 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_CONSTANT_FILL, 794 0, 0, 0, byte_count / 4); 795 ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset); 796 ib->ptr[ib->length_dw++] = src_data; 797 ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) << 16; 798 } 799 800 801 static const struct amdgpu_buffer_funcs si_dma_buffer_funcs = { 802 .copy_max_bytes = 0xffff8, 803 .copy_num_dw = 5, 804 .emit_copy_buffer = si_dma_emit_copy_buffer, 805 806 .fill_max_bytes = 0xffff8, 807 .fill_num_dw = 4, 808 .emit_fill_buffer = si_dma_emit_fill_buffer, 809 }; 810 811 static void si_dma_set_buffer_funcs(struct amdgpu_device *adev) 812 { 813 adev->mman.buffer_funcs = &si_dma_buffer_funcs; 814 adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring; 815 } 816 817 static const struct amdgpu_vm_pte_funcs si_dma_vm_pte_funcs = { 818 .copy_pte_num_dw = 5, 819 .copy_pte = si_dma_vm_copy_pte, 820 821 .write_pte = si_dma_vm_write_pte, 822 .set_pte_pde = si_dma_vm_set_pte_pde, 823 }; 824 825 static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev) 826 { 827 unsigned i; 828 829 adev->vm_manager.vm_pte_funcs = &si_dma_vm_pte_funcs; 830 for (i = 0; i < adev->sdma.num_instances; i++) { 831 adev->vm_manager.vm_pte_scheds[i] = 832 &adev->sdma.instance[i].ring.sched; 833 } 834 adev->vm_manager.vm_pte_num_scheds = adev->sdma.num_instances; 835 } 836 837 const struct amdgpu_ip_block_version si_dma_ip_block = 838 { 839 .type = AMD_IP_BLOCK_TYPE_SDMA, 840 .major = 1, 841 .minor = 0, 842 .rev = 0, 843 .funcs = &si_dma_ip_funcs, 844 }; 845