1 /* 2 * Copyright 2013 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 #include <linux/firmware.h> 25 #include <drm/drmP.h> 26 #include "radeon.h" 27 #include "radeon_ucode.h" 28 #include "radeon_asic.h" 29 #include "radeon_trace.h" 30 #include "cikd.h" 31 32 /* sdma */ 33 #define CIK_SDMA_UCODE_SIZE 1050 34 #define CIK_SDMA_UCODE_VERSION 64 35 36 /* 37 * sDMA - System DMA 38 * Starting with CIK, the GPU has new asynchronous 39 * DMA engines. These engines are used for compute 40 * and gfx. There are two DMA engines (SDMA0, SDMA1) 41 * and each one supports 1 ring buffer used for gfx 42 * and 2 queues used for compute. 43 * 44 * The programming model is very similar to the CP 45 * (ring buffer, IBs, etc.), but sDMA has it's own 46 * packet format that is different from the PM4 format 47 * used by the CP. sDMA supports copying data, writing 48 * embedded data, solid fills, and a number of other 49 * things. It also has support for tiling/detiling of 50 * buffers. 51 */ 52 53 /** 54 * cik_sdma_get_rptr - get the current read pointer 55 * 56 * @rdev: radeon_device pointer 57 * @ring: radeon ring pointer 58 * 59 * Get the current rptr from the hardware (CIK+). 60 */ 61 uint32_t cik_sdma_get_rptr(struct radeon_device *rdev, 62 struct radeon_ring *ring) 63 { 64 u32 rptr, reg; 65 66 if (rdev->wb.enabled) { 67 rptr = rdev->wb.wb[ring->rptr_offs/4]; 68 } else { 69 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 70 reg = SDMA0_GFX_RB_RPTR + SDMA0_REGISTER_OFFSET; 71 else 72 reg = SDMA0_GFX_RB_RPTR + SDMA1_REGISTER_OFFSET; 73 74 rptr = RREG32(reg); 75 } 76 77 return (rptr & 0x3fffc) >> 2; 78 } 79 80 /** 81 * cik_sdma_get_wptr - get the current write pointer 82 * 83 * @rdev: radeon_device pointer 84 * @ring: radeon ring pointer 85 * 86 * Get the current wptr from the hardware (CIK+). 87 */ 88 uint32_t cik_sdma_get_wptr(struct radeon_device *rdev, 89 struct radeon_ring *ring) 90 { 91 u32 reg; 92 93 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 94 reg = SDMA0_GFX_RB_WPTR + SDMA0_REGISTER_OFFSET; 95 else 96 reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET; 97 98 return (RREG32(reg) & 0x3fffc) >> 2; 99 } 100 101 /** 102 * cik_sdma_set_wptr - commit the write pointer 103 * 104 * @rdev: radeon_device pointer 105 * @ring: radeon ring pointer 106 * 107 * Write the wptr back to the hardware (CIK+). 108 */ 109 void cik_sdma_set_wptr(struct radeon_device *rdev, 110 struct radeon_ring *ring) 111 { 112 u32 reg; 113 114 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 115 reg = SDMA0_GFX_RB_WPTR + SDMA0_REGISTER_OFFSET; 116 else 117 reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET; 118 119 WREG32(reg, (ring->wptr << 2) & 0x3fffc); 120 (void)RREG32(reg); 121 } 122 123 /** 124 * cik_sdma_ring_ib_execute - Schedule an IB on the DMA engine 125 * 126 * @rdev: radeon_device pointer 127 * @ib: IB object to schedule 128 * 129 * Schedule an IB in the DMA ring (CIK). 130 */ 131 void cik_sdma_ring_ib_execute(struct radeon_device *rdev, 132 struct radeon_ib *ib) 133 { 134 struct radeon_ring *ring = &rdev->ring[ib->ring]; 135 u32 extra_bits = (ib->vm ? ib->vm->ids[ib->ring].id : 0) & 0xf; 136 137 if (rdev->wb.enabled) { 138 u32 next_rptr = ring->wptr + 5; 139 while ((next_rptr & 7) != 4) 140 next_rptr++; 141 next_rptr += 4; 142 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0)); 143 radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc); 144 radeon_ring_write(ring, upper_32_bits(ring->next_rptr_gpu_addr)); 145 radeon_ring_write(ring, 1); /* number of DWs to follow */ 146 radeon_ring_write(ring, next_rptr); 147 } 148 149 /* IB packet must end on a 8 DW boundary */ 150 while ((ring->wptr & 7) != 4) 151 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0)); 152 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_INDIRECT_BUFFER, 0, extra_bits)); 153 radeon_ring_write(ring, ib->gpu_addr & 0xffffffe0); /* base must be 32 byte aligned */ 154 radeon_ring_write(ring, upper_32_bits(ib->gpu_addr)); 155 radeon_ring_write(ring, ib->length_dw); 156 157 } 158 159 /** 160 * cik_sdma_hdp_flush_ring_emit - emit an hdp flush on the DMA ring 161 * 162 * @rdev: radeon_device pointer 163 * @ridx: radeon ring index 164 * 165 * Emit an hdp flush packet on the requested DMA ring. 166 */ 167 static void cik_sdma_hdp_flush_ring_emit(struct radeon_device *rdev, 168 int ridx) 169 { 170 struct radeon_ring *ring = &rdev->ring[ridx]; 171 u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) | 172 SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */ 173 u32 ref_and_mask; 174 175 if (ridx == R600_RING_TYPE_DMA_INDEX) 176 ref_and_mask = SDMA0; 177 else 178 ref_and_mask = SDMA1; 179 180 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits)); 181 radeon_ring_write(ring, GPU_HDP_FLUSH_DONE); 182 radeon_ring_write(ring, GPU_HDP_FLUSH_REQ); 183 radeon_ring_write(ring, ref_and_mask); /* reference */ 184 radeon_ring_write(ring, ref_and_mask); /* mask */ 185 radeon_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */ 186 } 187 188 /** 189 * cik_sdma_fence_ring_emit - emit a fence on the DMA ring 190 * 191 * @rdev: radeon_device pointer 192 * @fence: radeon fence object 193 * 194 * Add a DMA fence packet to the ring to write 195 * the fence seq number and DMA trap packet to generate 196 * an interrupt if needed (CIK). 197 */ 198 void cik_sdma_fence_ring_emit(struct radeon_device *rdev, 199 struct radeon_fence *fence) 200 { 201 struct radeon_ring *ring = &rdev->ring[fence->ring]; 202 u64 addr = rdev->fence_drv[fence->ring].gpu_addr; 203 204 /* write the fence */ 205 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0)); 206 radeon_ring_write(ring, lower_32_bits(addr)); 207 radeon_ring_write(ring, upper_32_bits(addr)); 208 radeon_ring_write(ring, fence->seq); 209 /* generate an interrupt */ 210 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0)); 211 /* flush HDP */ 212 cik_sdma_hdp_flush_ring_emit(rdev, fence->ring); 213 } 214 215 /** 216 * cik_sdma_semaphore_ring_emit - emit a semaphore on the dma ring 217 * 218 * @rdev: radeon_device pointer 219 * @ring: radeon_ring structure holding ring information 220 * @semaphore: radeon semaphore object 221 * @emit_wait: wait or signal semaphore 222 * 223 * Add a DMA semaphore packet to the ring wait on or signal 224 * other rings (CIK). 225 */ 226 bool cik_sdma_semaphore_ring_emit(struct radeon_device *rdev, 227 struct radeon_ring *ring, 228 struct radeon_semaphore *semaphore, 229 bool emit_wait) 230 { 231 u64 addr = semaphore->gpu_addr; 232 u32 extra_bits = emit_wait ? 0 : SDMA_SEMAPHORE_EXTRA_S; 233 234 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SEMAPHORE, 0, extra_bits)); 235 radeon_ring_write(ring, addr & 0xfffffff8); 236 radeon_ring_write(ring, upper_32_bits(addr)); 237 238 return true; 239 } 240 241 /** 242 * cik_sdma_gfx_stop - stop the gfx async dma engines 243 * 244 * @rdev: radeon_device pointer 245 * 246 * Stop the gfx async dma ring buffers (CIK). 247 */ 248 static void cik_sdma_gfx_stop(struct radeon_device *rdev) 249 { 250 u32 rb_cntl, reg_offset; 251 int i; 252 253 if ((rdev->asic->copy.copy_ring_index == R600_RING_TYPE_DMA_INDEX) || 254 (rdev->asic->copy.copy_ring_index == CAYMAN_RING_TYPE_DMA1_INDEX)) 255 radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); 256 257 for (i = 0; i < 2; i++) { 258 if (i == 0) 259 reg_offset = SDMA0_REGISTER_OFFSET; 260 else 261 reg_offset = SDMA1_REGISTER_OFFSET; 262 rb_cntl = RREG32(SDMA0_GFX_RB_CNTL + reg_offset); 263 rb_cntl &= ~SDMA_RB_ENABLE; 264 WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl); 265 WREG32(SDMA0_GFX_IB_CNTL + reg_offset, 0); 266 } 267 rdev->ring[R600_RING_TYPE_DMA_INDEX].ready = false; 268 rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready = false; 269 270 /* FIXME use something else than big hammer but after few days can not 271 * seem to find good combination so reset SDMA blocks as it seems we 272 * do not shut them down properly. This fix hibernation and does not 273 * affect suspend to ram. 274 */ 275 WREG32(SRBM_SOFT_RESET, SOFT_RESET_SDMA | SOFT_RESET_SDMA1); 276 (void)RREG32(SRBM_SOFT_RESET); 277 udelay(50); 278 WREG32(SRBM_SOFT_RESET, 0); 279 (void)RREG32(SRBM_SOFT_RESET); 280 } 281 282 /** 283 * cik_sdma_rlc_stop - stop the compute async dma engines 284 * 285 * @rdev: radeon_device pointer 286 * 287 * Stop the compute async dma queues (CIK). 288 */ 289 static void cik_sdma_rlc_stop(struct radeon_device *rdev) 290 { 291 /* XXX todo */ 292 } 293 294 /** 295 * cik_sdma_ctx_switch_enable - enable/disable sdma engine preemption 296 * 297 * @rdev: radeon_device pointer 298 * @enable: enable/disable preemption. 299 * 300 * Halt or unhalt the async dma engines (CIK). 301 */ 302 static void cik_sdma_ctx_switch_enable(struct radeon_device *rdev, bool enable) 303 { 304 uint32_t reg_offset, value; 305 int i; 306 307 for (i = 0; i < 2; i++) { 308 if (i == 0) 309 reg_offset = SDMA0_REGISTER_OFFSET; 310 else 311 reg_offset = SDMA1_REGISTER_OFFSET; 312 value = RREG32(SDMA0_CNTL + reg_offset); 313 if (enable) 314 value |= AUTO_CTXSW_ENABLE; 315 else 316 value &= ~AUTO_CTXSW_ENABLE; 317 WREG32(SDMA0_CNTL + reg_offset, value); 318 } 319 } 320 321 /** 322 * cik_sdma_enable - stop the async dma engines 323 * 324 * @rdev: radeon_device pointer 325 * @enable: enable/disable the DMA MEs. 326 * 327 * Halt or unhalt the async dma engines (CIK). 328 */ 329 void cik_sdma_enable(struct radeon_device *rdev, bool enable) 330 { 331 u32 me_cntl, reg_offset; 332 int i; 333 334 if (enable == false) { 335 cik_sdma_gfx_stop(rdev); 336 cik_sdma_rlc_stop(rdev); 337 } 338 339 for (i = 0; i < 2; i++) { 340 if (i == 0) 341 reg_offset = SDMA0_REGISTER_OFFSET; 342 else 343 reg_offset = SDMA1_REGISTER_OFFSET; 344 me_cntl = RREG32(SDMA0_ME_CNTL + reg_offset); 345 if (enable) 346 me_cntl &= ~SDMA_HALT; 347 else 348 me_cntl |= SDMA_HALT; 349 WREG32(SDMA0_ME_CNTL + reg_offset, me_cntl); 350 } 351 352 cik_sdma_ctx_switch_enable(rdev, enable); 353 } 354 355 /** 356 * cik_sdma_gfx_resume - setup and start the async dma engines 357 * 358 * @rdev: radeon_device pointer 359 * 360 * Set up the gfx DMA ring buffers and enable them (CIK). 361 * Returns 0 for success, error for failure. 362 */ 363 static int cik_sdma_gfx_resume(struct radeon_device *rdev) 364 { 365 struct radeon_ring *ring; 366 u32 rb_cntl, ib_cntl; 367 u32 rb_bufsz; 368 u32 reg_offset, wb_offset; 369 int i, r; 370 371 for (i = 0; i < 2; i++) { 372 if (i == 0) { 373 ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX]; 374 reg_offset = SDMA0_REGISTER_OFFSET; 375 wb_offset = R600_WB_DMA_RPTR_OFFSET; 376 } else { 377 ring = &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]; 378 reg_offset = SDMA1_REGISTER_OFFSET; 379 wb_offset = CAYMAN_WB_DMA1_RPTR_OFFSET; 380 } 381 382 WREG32(SDMA0_SEM_INCOMPLETE_TIMER_CNTL + reg_offset, 0); 383 WREG32(SDMA0_SEM_WAIT_FAIL_TIMER_CNTL + reg_offset, 0); 384 385 /* Set ring buffer size in dwords */ 386 rb_bufsz = order_base_2(ring->ring_size / 4); 387 rb_cntl = rb_bufsz << 1; 388 #ifdef __BIG_ENDIAN 389 rb_cntl |= SDMA_RB_SWAP_ENABLE | SDMA_RPTR_WRITEBACK_SWAP_ENABLE; 390 #endif 391 WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl); 392 393 /* Initialize the ring buffer's read and write pointers */ 394 WREG32(SDMA0_GFX_RB_RPTR + reg_offset, 0); 395 WREG32(SDMA0_GFX_RB_WPTR + reg_offset, 0); 396 397 /* set the wb address whether it's enabled or not */ 398 WREG32(SDMA0_GFX_RB_RPTR_ADDR_HI + reg_offset, 399 upper_32_bits(rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF); 400 WREG32(SDMA0_GFX_RB_RPTR_ADDR_LO + reg_offset, 401 ((rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC)); 402 403 if (rdev->wb.enabled) 404 rb_cntl |= SDMA_RPTR_WRITEBACK_ENABLE; 405 406 WREG32(SDMA0_GFX_RB_BASE + reg_offset, ring->gpu_addr >> 8); 407 WREG32(SDMA0_GFX_RB_BASE_HI + reg_offset, ring->gpu_addr >> 40); 408 409 ring->wptr = 0; 410 WREG32(SDMA0_GFX_RB_WPTR + reg_offset, ring->wptr << 2); 411 412 /* enable DMA RB */ 413 WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl | SDMA_RB_ENABLE); 414 415 ib_cntl = SDMA_IB_ENABLE; 416 #ifdef __BIG_ENDIAN 417 ib_cntl |= SDMA_IB_SWAP_ENABLE; 418 #endif 419 /* enable DMA IBs */ 420 WREG32(SDMA0_GFX_IB_CNTL + reg_offset, ib_cntl); 421 422 ring->ready = true; 423 424 r = radeon_ring_test(rdev, ring->idx, ring); 425 if (r) { 426 ring->ready = false; 427 return r; 428 } 429 } 430 431 if ((rdev->asic->copy.copy_ring_index == R600_RING_TYPE_DMA_INDEX) || 432 (rdev->asic->copy.copy_ring_index == CAYMAN_RING_TYPE_DMA1_INDEX)) 433 radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size); 434 435 return 0; 436 } 437 438 /** 439 * cik_sdma_rlc_resume - setup and start the async dma engines 440 * 441 * @rdev: radeon_device pointer 442 * 443 * Set up the compute DMA queues and enable them (CIK). 444 * Returns 0 for success, error for failure. 445 */ 446 static int cik_sdma_rlc_resume(struct radeon_device *rdev) 447 { 448 /* XXX todo */ 449 return 0; 450 } 451 452 /** 453 * cik_sdma_load_microcode - load the sDMA ME ucode 454 * 455 * @rdev: radeon_device pointer 456 * 457 * Loads the sDMA0/1 ucode. 458 * Returns 0 for success, -EINVAL if the ucode is not available. 459 */ 460 static int cik_sdma_load_microcode(struct radeon_device *rdev) 461 { 462 int i; 463 464 if (!rdev->sdma_fw) 465 return -EINVAL; 466 467 /* halt the MEs */ 468 cik_sdma_enable(rdev, false); 469 470 if (rdev->new_fw) { 471 const struct sdma_firmware_header_v1_0 *hdr = 472 (const struct sdma_firmware_header_v1_0 *)rdev->sdma_fw->data; 473 const __le32 *fw_data; 474 u32 fw_size; 475 476 radeon_ucode_print_sdma_hdr(&hdr->header); 477 478 /* sdma0 */ 479 fw_data = (const __le32 *) 480 (rdev->sdma_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes)); 481 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4; 482 WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0); 483 for (i = 0; i < fw_size; i++) 484 WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, le32_to_cpup(fw_data++)); 485 WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); 486 487 /* sdma1 */ 488 fw_data = (const __le32 *) 489 (rdev->sdma_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes)); 490 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4; 491 WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0); 492 for (i = 0; i < fw_size; i++) 493 WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, le32_to_cpup(fw_data++)); 494 WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); 495 } else { 496 const __be32 *fw_data; 497 498 /* sdma0 */ 499 fw_data = (const __be32 *)rdev->sdma_fw->data; 500 WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0); 501 for (i = 0; i < CIK_SDMA_UCODE_SIZE; i++) 502 WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, be32_to_cpup(fw_data++)); 503 WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); 504 505 /* sdma1 */ 506 fw_data = (const __be32 *)rdev->sdma_fw->data; 507 WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0); 508 for (i = 0; i < CIK_SDMA_UCODE_SIZE; i++) 509 WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, be32_to_cpup(fw_data++)); 510 WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION); 511 } 512 513 WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0); 514 WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0); 515 return 0; 516 } 517 518 /** 519 * cik_sdma_resume - setup and start the async dma engines 520 * 521 * @rdev: radeon_device pointer 522 * 523 * Set up the DMA engines and enable them (CIK). 524 * Returns 0 for success, error for failure. 525 */ 526 int cik_sdma_resume(struct radeon_device *rdev) 527 { 528 int r; 529 530 r = cik_sdma_load_microcode(rdev); 531 if (r) 532 return r; 533 534 /* unhalt the MEs */ 535 cik_sdma_enable(rdev, true); 536 537 /* start the gfx rings and rlc compute queues */ 538 r = cik_sdma_gfx_resume(rdev); 539 if (r) 540 return r; 541 r = cik_sdma_rlc_resume(rdev); 542 if (r) 543 return r; 544 545 return 0; 546 } 547 548 /** 549 * cik_sdma_fini - tear down the async dma engines 550 * 551 * @rdev: radeon_device pointer 552 * 553 * Stop the async dma engines and free the rings (CIK). 554 */ 555 void cik_sdma_fini(struct radeon_device *rdev) 556 { 557 /* halt the MEs */ 558 cik_sdma_enable(rdev, false); 559 radeon_ring_fini(rdev, &rdev->ring[R600_RING_TYPE_DMA_INDEX]); 560 radeon_ring_fini(rdev, &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]); 561 /* XXX - compute dma queue tear down */ 562 } 563 564 /** 565 * cik_copy_dma - copy pages using the DMA engine 566 * 567 * @rdev: radeon_device pointer 568 * @src_offset: src GPU address 569 * @dst_offset: dst GPU address 570 * @num_gpu_pages: number of GPU pages to xfer 571 * @resv: reservation object to sync to 572 * 573 * Copy GPU paging using the DMA engine (CIK). 574 * Used by the radeon ttm implementation to move pages if 575 * registered as the asic copy callback. 576 */ 577 struct radeon_fence *cik_copy_dma(struct radeon_device *rdev, 578 uint64_t src_offset, uint64_t dst_offset, 579 unsigned num_gpu_pages, 580 struct reservation_object *resv) 581 { 582 struct radeon_fence *fence; 583 struct radeon_sync sync; 584 int ring_index = rdev->asic->copy.dma_ring_index; 585 struct radeon_ring *ring = &rdev->ring[ring_index]; 586 u32 size_in_bytes, cur_size_in_bytes; 587 int i, num_loops; 588 int r = 0; 589 590 radeon_sync_create(&sync); 591 592 size_in_bytes = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT); 593 num_loops = DIV_ROUND_UP(size_in_bytes, 0x1fffff); 594 r = radeon_ring_lock(rdev, ring, num_loops * 7 + 14); 595 if (r) { 596 DRM_ERROR("radeon: moving bo (%d).\n", r); 597 radeon_sync_free(rdev, &sync, NULL); 598 return ERR_PTR(r); 599 } 600 601 radeon_sync_resv(rdev, &sync, resv, false); 602 radeon_sync_rings(rdev, &sync, ring->idx); 603 604 for (i = 0; i < num_loops; i++) { 605 cur_size_in_bytes = size_in_bytes; 606 if (cur_size_in_bytes > 0x1fffff) 607 cur_size_in_bytes = 0x1fffff; 608 size_in_bytes -= cur_size_in_bytes; 609 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_COPY, SDMA_COPY_SUB_OPCODE_LINEAR, 0)); 610 radeon_ring_write(ring, cur_size_in_bytes); 611 radeon_ring_write(ring, 0); /* src/dst endian swap */ 612 radeon_ring_write(ring, lower_32_bits(src_offset)); 613 radeon_ring_write(ring, upper_32_bits(src_offset)); 614 radeon_ring_write(ring, lower_32_bits(dst_offset)); 615 radeon_ring_write(ring, upper_32_bits(dst_offset)); 616 src_offset += cur_size_in_bytes; 617 dst_offset += cur_size_in_bytes; 618 } 619 620 r = radeon_fence_emit(rdev, &fence, ring->idx); 621 if (r) { 622 radeon_ring_unlock_undo(rdev, ring); 623 radeon_sync_free(rdev, &sync, NULL); 624 return ERR_PTR(r); 625 } 626 627 radeon_ring_unlock_commit(rdev, ring, false); 628 radeon_sync_free(rdev, &sync, fence); 629 630 return fence; 631 } 632 633 /** 634 * cik_sdma_ring_test - simple async dma engine test 635 * 636 * @rdev: radeon_device pointer 637 * @ring: radeon_ring structure holding ring information 638 * 639 * Test the DMA engine by writing using it to write an 640 * value to memory. (CIK). 641 * Returns 0 for success, error for failure. 642 */ 643 int cik_sdma_ring_test(struct radeon_device *rdev, 644 struct radeon_ring *ring) 645 { 646 unsigned i; 647 int r; 648 unsigned index; 649 u32 tmp; 650 u64 gpu_addr; 651 652 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 653 index = R600_WB_DMA_RING_TEST_OFFSET; 654 else 655 index = CAYMAN_WB_DMA1_RING_TEST_OFFSET; 656 657 gpu_addr = rdev->wb.gpu_addr + index; 658 659 tmp = 0xCAFEDEAD; 660 rdev->wb.wb[index/4] = cpu_to_le32(tmp); 661 662 r = radeon_ring_lock(rdev, ring, 5); 663 if (r) { 664 DRM_ERROR("radeon: dma failed to lock ring %d (%d).\n", ring->idx, r); 665 return r; 666 } 667 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0)); 668 radeon_ring_write(ring, lower_32_bits(gpu_addr)); 669 radeon_ring_write(ring, upper_32_bits(gpu_addr)); 670 radeon_ring_write(ring, 1); /* number of DWs to follow */ 671 radeon_ring_write(ring, 0xDEADBEEF); 672 radeon_ring_unlock_commit(rdev, ring, false); 673 674 for (i = 0; i < rdev->usec_timeout; i++) { 675 tmp = le32_to_cpu(rdev->wb.wb[index/4]); 676 if (tmp == 0xDEADBEEF) 677 break; 678 DRM_UDELAY(1); 679 } 680 681 if (i < rdev->usec_timeout) { 682 DRM_INFO("ring test on %d succeeded in %d usecs\n", ring->idx, i); 683 } else { 684 DRM_ERROR("radeon: ring %d test failed (0x%08X)\n", 685 ring->idx, tmp); 686 r = -EINVAL; 687 } 688 return r; 689 } 690 691 /** 692 * cik_sdma_ib_test - test an IB on the DMA engine 693 * 694 * @rdev: radeon_device pointer 695 * @ring: radeon_ring structure holding ring information 696 * 697 * Test a simple IB in the DMA ring (CIK). 698 * Returns 0 on success, error on failure. 699 */ 700 int cik_sdma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring) 701 { 702 struct radeon_ib ib; 703 unsigned i; 704 unsigned index; 705 int r; 706 u32 tmp = 0; 707 u64 gpu_addr; 708 709 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 710 index = R600_WB_DMA_RING_TEST_OFFSET; 711 else 712 index = CAYMAN_WB_DMA1_RING_TEST_OFFSET; 713 714 gpu_addr = rdev->wb.gpu_addr + index; 715 716 tmp = 0xCAFEDEAD; 717 rdev->wb.wb[index/4] = cpu_to_le32(tmp); 718 719 r = radeon_ib_get(rdev, ring->idx, &ib, NULL, 256); 720 if (r) { 721 DRM_ERROR("radeon: failed to get ib (%d).\n", r); 722 return r; 723 } 724 725 ib.ptr[0] = SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0); 726 ib.ptr[1] = lower_32_bits(gpu_addr); 727 ib.ptr[2] = upper_32_bits(gpu_addr); 728 ib.ptr[3] = 1; 729 ib.ptr[4] = 0xDEADBEEF; 730 ib.length_dw = 5; 731 732 r = radeon_ib_schedule(rdev, &ib, NULL, false); 733 if (r) { 734 radeon_ib_free(rdev, &ib); 735 DRM_ERROR("radeon: failed to schedule ib (%d).\n", r); 736 return r; 737 } 738 r = radeon_fence_wait_timeout(ib.fence, false, usecs_to_jiffies( 739 RADEON_USEC_IB_TEST_TIMEOUT)); 740 if (r < 0) { 741 DRM_ERROR("radeon: fence wait failed (%d).\n", r); 742 return r; 743 } else if (r == 0) { 744 DRM_ERROR("radeon: fence wait timed out.\n"); 745 return -ETIMEDOUT; 746 } 747 r = 0; 748 for (i = 0; i < rdev->usec_timeout; i++) { 749 tmp = le32_to_cpu(rdev->wb.wb[index/4]); 750 if (tmp == 0xDEADBEEF) 751 break; 752 DRM_UDELAY(1); 753 } 754 if (i < rdev->usec_timeout) { 755 DRM_INFO("ib test on ring %d succeeded in %u usecs\n", ib.fence->ring, i); 756 } else { 757 DRM_ERROR("radeon: ib test failed (0x%08X)\n", tmp); 758 r = -EINVAL; 759 } 760 radeon_ib_free(rdev, &ib); 761 return r; 762 } 763 764 /** 765 * cik_sdma_is_lockup - Check if the DMA engine is locked up 766 * 767 * @rdev: radeon_device pointer 768 * @ring: radeon_ring structure holding ring information 769 * 770 * Check if the async DMA engine is locked up (CIK). 771 * Returns true if the engine appears to be locked up, false if not. 772 */ 773 bool cik_sdma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring) 774 { 775 u32 reset_mask = cik_gpu_check_soft_reset(rdev); 776 u32 mask; 777 778 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 779 mask = RADEON_RESET_DMA; 780 else 781 mask = RADEON_RESET_DMA1; 782 783 if (!(reset_mask & mask)) { 784 radeon_ring_lockup_update(rdev, ring); 785 return false; 786 } 787 return radeon_ring_test_lockup(rdev, ring); 788 } 789 790 /** 791 * cik_sdma_vm_copy_pages - update PTEs by copying them from the GART 792 * 793 * @rdev: radeon_device pointer 794 * @ib: indirect buffer to fill with commands 795 * @pe: addr of the page entry 796 * @src: src addr to copy from 797 * @count: number of page entries to update 798 * 799 * Update PTEs by copying them from the GART using sDMA (CIK). 800 */ 801 void cik_sdma_vm_copy_pages(struct radeon_device *rdev, 802 struct radeon_ib *ib, 803 uint64_t pe, uint64_t src, 804 unsigned count) 805 { 806 while (count) { 807 unsigned bytes = count * 8; 808 if (bytes > 0x1FFFF8) 809 bytes = 0x1FFFF8; 810 811 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY, 812 SDMA_WRITE_SUB_OPCODE_LINEAR, 0); 813 ib->ptr[ib->length_dw++] = bytes; 814 ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */ 815 ib->ptr[ib->length_dw++] = lower_32_bits(src); 816 ib->ptr[ib->length_dw++] = upper_32_bits(src); 817 ib->ptr[ib->length_dw++] = lower_32_bits(pe); 818 ib->ptr[ib->length_dw++] = upper_32_bits(pe); 819 820 pe += bytes; 821 src += bytes; 822 count -= bytes / 8; 823 } 824 } 825 826 /** 827 * cik_sdma_vm_write_pages - update PTEs by writing them manually 828 * 829 * @rdev: radeon_device pointer 830 * @ib: indirect buffer to fill with commands 831 * @pe: addr of the page entry 832 * @addr: dst addr to write into pe 833 * @count: number of page entries to update 834 * @incr: increase next addr by incr bytes 835 * @flags: access flags 836 * 837 * Update PTEs by writing them manually using sDMA (CIK). 838 */ 839 void cik_sdma_vm_write_pages(struct radeon_device *rdev, 840 struct radeon_ib *ib, 841 uint64_t pe, 842 uint64_t addr, unsigned count, 843 uint32_t incr, uint32_t flags) 844 { 845 uint64_t value; 846 unsigned ndw; 847 848 while (count) { 849 ndw = count * 2; 850 if (ndw > 0xFFFFE) 851 ndw = 0xFFFFE; 852 853 /* for non-physically contiguous pages (system) */ 854 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_WRITE, 855 SDMA_WRITE_SUB_OPCODE_LINEAR, 0); 856 ib->ptr[ib->length_dw++] = pe; 857 ib->ptr[ib->length_dw++] = upper_32_bits(pe); 858 ib->ptr[ib->length_dw++] = ndw; 859 for (; ndw > 0; ndw -= 2, --count, pe += 8) { 860 if (flags & R600_PTE_SYSTEM) { 861 value = radeon_vm_map_gart(rdev, addr); 862 } else if (flags & R600_PTE_VALID) { 863 value = addr; 864 } else { 865 value = 0; 866 } 867 addr += incr; 868 value |= flags; 869 ib->ptr[ib->length_dw++] = value; 870 ib->ptr[ib->length_dw++] = upper_32_bits(value); 871 } 872 } 873 } 874 875 /** 876 * cik_sdma_vm_set_pages - update the page tables using sDMA 877 * 878 * @rdev: radeon_device pointer 879 * @ib: indirect buffer to fill with commands 880 * @pe: addr of the page entry 881 * @addr: dst addr to write into pe 882 * @count: number of page entries to update 883 * @incr: increase next addr by incr bytes 884 * @flags: access flags 885 * 886 * Update the page tables using sDMA (CIK). 887 */ 888 void cik_sdma_vm_set_pages(struct radeon_device *rdev, 889 struct radeon_ib *ib, 890 uint64_t pe, 891 uint64_t addr, unsigned count, 892 uint32_t incr, uint32_t flags) 893 { 894 uint64_t value; 895 unsigned ndw; 896 897 while (count) { 898 ndw = count; 899 if (ndw > 0x7FFFF) 900 ndw = 0x7FFFF; 901 902 if (flags & R600_PTE_VALID) 903 value = addr; 904 else 905 value = 0; 906 907 /* for physically contiguous pages (vram) */ 908 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_GENERATE_PTE_PDE, 0, 0); 909 ib->ptr[ib->length_dw++] = pe; /* dst addr */ 910 ib->ptr[ib->length_dw++] = upper_32_bits(pe); 911 ib->ptr[ib->length_dw++] = flags; /* mask */ 912 ib->ptr[ib->length_dw++] = 0; 913 ib->ptr[ib->length_dw++] = value; /* value */ 914 ib->ptr[ib->length_dw++] = upper_32_bits(value); 915 ib->ptr[ib->length_dw++] = incr; /* increment size */ 916 ib->ptr[ib->length_dw++] = 0; 917 ib->ptr[ib->length_dw++] = ndw; /* number of entries */ 918 919 pe += ndw * 8; 920 addr += ndw * incr; 921 count -= ndw; 922 } 923 } 924 925 /** 926 * cik_sdma_vm_pad_ib - pad the IB to the required number of dw 927 * 928 * @ib: indirect buffer to fill with padding 929 * 930 */ 931 void cik_sdma_vm_pad_ib(struct radeon_ib *ib) 932 { 933 while (ib->length_dw & 0x7) 934 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0); 935 } 936 937 /** 938 * cik_dma_vm_flush - cik vm flush using sDMA 939 * 940 * @rdev: radeon_device pointer 941 * 942 * Update the page table base and flush the VM TLB 943 * using sDMA (CIK). 944 */ 945 void cik_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring, 946 unsigned vm_id, uint64_t pd_addr) 947 { 948 u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(0) | 949 SDMA_POLL_REG_MEM_EXTRA_FUNC(0)); /* always */ 950 951 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 952 if (vm_id < 8) { 953 radeon_ring_write(ring, (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2)) >> 2); 954 } else { 955 radeon_ring_write(ring, (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm_id - 8) << 2)) >> 2); 956 } 957 radeon_ring_write(ring, pd_addr >> 12); 958 959 /* update SH_MEM_* regs */ 960 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 961 radeon_ring_write(ring, SRBM_GFX_CNTL >> 2); 962 radeon_ring_write(ring, VMID(vm_id)); 963 964 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 965 radeon_ring_write(ring, SH_MEM_BASES >> 2); 966 radeon_ring_write(ring, 0); 967 968 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 969 radeon_ring_write(ring, SH_MEM_CONFIG >> 2); 970 radeon_ring_write(ring, 0); 971 972 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 973 radeon_ring_write(ring, SH_MEM_APE1_BASE >> 2); 974 radeon_ring_write(ring, 1); 975 976 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 977 radeon_ring_write(ring, SH_MEM_APE1_LIMIT >> 2); 978 radeon_ring_write(ring, 0); 979 980 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 981 radeon_ring_write(ring, SRBM_GFX_CNTL >> 2); 982 radeon_ring_write(ring, VMID(0)); 983 984 /* flush HDP */ 985 cik_sdma_hdp_flush_ring_emit(rdev, ring->idx); 986 987 /* flush TLB */ 988 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); 989 radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2); 990 radeon_ring_write(ring, 1 << vm_id); 991 992 radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits)); 993 radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2); 994 radeon_ring_write(ring, 0); 995 radeon_ring_write(ring, 0); /* reference */ 996 radeon_ring_write(ring, 0); /* mask */ 997 radeon_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */ 998 } 999 1000