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