drivers/gpu/drm/amd/amdgpu/si_dma.c

   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 #include <drm/drmP.h>
  25 #include "amdgpu.h"
  26 #include "amdgpu_trace.h"
  27 #include "sid.h"
  28
  29 const u32 sdma_offsets[SDMA_MAX_INSTANCE] =
  30 {
  31         DMA0_REGISTER_OFFSET,
  32         DMA1_REGISTER_OFFSET
  33 };
  34
  35 static void si_dma_set_ring_funcs(struct amdgpu_device *adev);
  36 static void si_dma_set_buffer_funcs(struct amdgpu_device *adev);
  37 static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev);
  38 static void si_dma_set_irq_funcs(struct amdgpu_device *adev);
  39
  40 static uint64_t si_dma_ring_get_rptr(struct amdgpu_ring *ring)
  41 {
  42         return ring->adev->wb.wb[ring->rptr_offs>>2];
  43 }
  44
  45 static uint64_t si_dma_ring_get_wptr(struct amdgpu_ring *ring)
  46 {
  47         struct amdgpu_device *adev = ring->adev;
  48         u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1;
  49
  50         return (RREG32(DMA_RB_WPTR + sdma_offsets[me]) & 0x3fffc) >> 2;
  51 }
  52
  53 static void si_dma_ring_set_wptr(struct amdgpu_ring *ring)
  54 {
  55         struct amdgpu_device *adev = ring->adev;
  56         u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1;
  57
  58         WREG32(DMA_RB_WPTR + sdma_offsets[me],
  59                (lower_32_bits(ring->wptr) << 2) & 0x3fffc);
  60 }
  61
  62 static void si_dma_ring_emit_ib(struct amdgpu_ring *ring,
  63                                 struct amdgpu_ib *ib,
  64                                 unsigned vm_id, bool ctx_switch)
  65 {
  66         /* The indirect buffer packet must end on an 8 DW boundary in the DMA ring.
  67          * Pad as necessary with NOPs.
  68          */
  69         while ((lower_32_bits(ring->wptr) & 7) != 5)
  70                 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0));
  71         amdgpu_ring_write(ring, DMA_IB_PACKET(DMA_PACKET_INDIRECT_BUFFER, vm_id, 0));
  72         amdgpu_ring_write(ring, (ib->gpu_addr & 0xFFFFFFE0));
  73         amdgpu_ring_write(ring, (ib->length_dw << 12) | (upper_32_bits(ib->gpu_addr) & 0xFF));
  74
  75 }
  76
  77 static void si_dma_ring_emit_hdp_flush(struct amdgpu_ring *ring)
  78 {
  79         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
  80         amdgpu_ring_write(ring, (0xf << 16) | (HDP_MEM_COHERENCY_FLUSH_CNTL));
  81         amdgpu_ring_write(ring, 1);
  82 }
  83
  84 static void si_dma_ring_emit_hdp_invalidate(struct amdgpu_ring *ring)
  85 {
  86         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
  87         amdgpu_ring_write(ring, (0xf << 16) | (HDP_DEBUG0));
  88         amdgpu_ring_write(ring, 1);
  89 }
  90
  91 /**
  92  * si_dma_ring_emit_fence - emit a fence on the DMA ring
  93  *
  94  * @ring: amdgpu ring pointer
  95  * @fence: amdgpu fence object
  96  *
  97  * Add a DMA fence packet to the ring to write
  98  * the fence seq number and DMA trap packet to generate
  99  * an interrupt if needed (VI).
 100  */
 101 static void si_dma_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq,
 102                                       unsigned flags)
 103 {
 104
 105         bool write64bit = flags & AMDGPU_FENCE_FLAG_64BIT;
 106         /* write the fence */
 107         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0, 0, 0));
 108         amdgpu_ring_write(ring, addr & 0xfffffffc);
 109         amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xff));
 110         amdgpu_ring_write(ring, seq);
 111         /* optionally write high bits as well */
 112         if (write64bit) {
 113                 addr += 4;
 114                 amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0, 0, 0));
 115                 amdgpu_ring_write(ring, addr & 0xfffffffc);
 116                 amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xff));
 117                 amdgpu_ring_write(ring, upper_32_bits(seq));
 118         }
 119         /* generate an interrupt */
 120         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_TRAP, 0, 0, 0, 0));
 121 }
 122
 123 static void si_dma_stop(struct amdgpu_device *adev)
 124 {
 125         struct amdgpu_ring *ring;
 126         u32 rb_cntl;
 127         unsigned i;
 128
 129         for (i = 0; i < adev->sdma.num_instances; i++) {
 130                 ring = &adev->sdma.instance[i].ring;
 131                 /* dma0 */
 132                 rb_cntl = RREG32(DMA_RB_CNTL + sdma_offsets[i]);
 133                 rb_cntl &= ~DMA_RB_ENABLE;
 134                 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl);
 135
 136                 if (adev->mman.buffer_funcs_ring == ring)
 137                         amdgpu_ttm_set_active_vram_size(adev, adev->mc.visible_vram_size);
 138                 ring->ready = false;
 139         }
 140 }
 141
 142 static int si_dma_start(struct amdgpu_device *adev)
 143 {
 144         struct amdgpu_ring *ring;
 145         u32 rb_cntl, dma_cntl, ib_cntl, rb_bufsz;
 146         int i, r;
 147         uint64_t rptr_addr;
 148
 149         for (i = 0; i < adev->sdma.num_instances; i++) {
 150                 ring = &adev->sdma.instance[i].ring;
 151
 152                 WREG32(DMA_SEM_INCOMPLETE_TIMER_CNTL + sdma_offsets[i], 0);
 153                 WREG32(DMA_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0);
 154
 155                 /* Set ring buffer size in dwords */
 156                 rb_bufsz = order_base_2(ring->ring_size / 4);
 157                 rb_cntl = rb_bufsz << 1;
 158 #ifdef __BIG_ENDIAN
 159                 rb_cntl |= DMA_RB_SWAP_ENABLE | DMA_RPTR_WRITEBACK_SWAP_ENABLE;
 160 #endif
 161                 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl);
 162
 163                 /* Initialize the ring buffer's read and write pointers */
 164                 WREG32(DMA_RB_RPTR + sdma_offsets[i], 0);
 165                 WREG32(DMA_RB_WPTR + sdma_offsets[i], 0);
 166
 167                 rptr_addr = adev->wb.gpu_addr + (ring->rptr_offs * 4);
 168
 169                 WREG32(DMA_RB_RPTR_ADDR_LO + sdma_offsets[i], lower_32_bits(rptr_addr));
 170                 WREG32(DMA_RB_RPTR_ADDR_HI + sdma_offsets[i], upper_32_bits(rptr_addr) & 0xFF);
 171
 172                 rb_cntl |= DMA_RPTR_WRITEBACK_ENABLE;
 173
 174                 WREG32(DMA_RB_BASE + sdma_offsets[i], ring->gpu_addr >> 8);
 175
 176                 /* enable DMA IBs */
 177                 ib_cntl = DMA_IB_ENABLE | CMD_VMID_FORCE;
 178 #ifdef __BIG_ENDIAN
 179                 ib_cntl |= DMA_IB_SWAP_ENABLE;
 180 #endif
 181                 WREG32(DMA_IB_CNTL + sdma_offsets[i], ib_cntl);
 182
 183                 dma_cntl = RREG32(DMA_CNTL + sdma_offsets[i]);
 184                 dma_cntl &= ~CTXEMPTY_INT_ENABLE;
 185                 WREG32(DMA_CNTL + sdma_offsets[i], dma_cntl);
 186
 187                 ring->wptr = 0;
 188                 WREG32(DMA_RB_WPTR + sdma_offsets[i], lower_32_bits(ring->wptr) << 2);
 189                 WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl | DMA_RB_ENABLE);
 190
 191                 ring->ready = true;
 192
 193                 r = amdgpu_ring_test_ring(ring);
 194                 if (r) {
 195                         ring->ready = false;
 196                         return r;
 197                 }
 198
 199                 if (adev->mman.buffer_funcs_ring == ring)
 200                         amdgpu_ttm_set_active_vram_size(adev, adev->mc.real_vram_size);
 201         }
 202
 203         return 0;
 204 }
 205
 206 /**
 207  * si_dma_ring_test_ring - simple async dma engine test
 208  *
 209  * @ring: amdgpu_ring structure holding ring information
 210  *
 211  * Test the DMA engine by writing using it to write an
 212  * value to memory. (VI).
 213  * Returns 0 for success, error for failure.
 214  */
 215 static int si_dma_ring_test_ring(struct amdgpu_ring *ring)
 216 {
 217         struct amdgpu_device *adev = ring->adev;
 218         unsigned i;
 219         unsigned index;
 220         int r;
 221         u32 tmp;
 222         u64 gpu_addr;
 223
 224         r = amdgpu_wb_get(adev, &index);
 225         if (r) {
 226                 dev_err(adev->dev, "(%d) failed to allocate wb slot\n", r);
 227                 return r;
 228         }
 229
 230         gpu_addr = adev->wb.gpu_addr + (index * 4);
 231         tmp = 0xCAFEDEAD;
 232         adev->wb.wb[index] = cpu_to_le32(tmp);
 233
 234         r = amdgpu_ring_alloc(ring, 4);
 235         if (r) {
 236                 DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
 237                 amdgpu_wb_free(adev, index);
 238                 return r;
 239         }
 240
 241         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1));
 242         amdgpu_ring_write(ring, lower_32_bits(gpu_addr));
 243         amdgpu_ring_write(ring, upper_32_bits(gpu_addr) & 0xff);
 244         amdgpu_ring_write(ring, 0xDEADBEEF);
 245         amdgpu_ring_commit(ring);
 246
 247         for (i = 0; i < adev->usec_timeout; i++) {
 248                 tmp = le32_to_cpu(adev->wb.wb[index]);
 249                 if (tmp == 0xDEADBEEF)
 250                         break;
 251                 DRM_UDELAY(1);
 252         }
 253
 254         if (i < adev->usec_timeout) {
 255                 DRM_INFO("ring test on %d succeeded in %d usecs\n", ring->idx, i);
 256         } else {
 257                 DRM_ERROR("amdgpu: ring %d test failed (0x%08X)\n",
 258                           ring->idx, tmp);
 259                 r = -EINVAL;
 260         }
 261         amdgpu_wb_free(adev, index);
 262
 263         return r;
 264 }
 265
 266 /**
 267  * si_dma_ring_test_ib - test an IB on the DMA engine
 268  *
 269  * @ring: amdgpu_ring structure holding ring information
 270  *
 271  * Test a simple IB in the DMA ring (VI).
 272  * Returns 0 on success, error on failure.
 273  */
 274 static int si_dma_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 275 {
 276         struct amdgpu_device *adev = ring->adev;
 277         struct amdgpu_ib ib;
 278         struct dma_fence *f = NULL;
 279         unsigned index;
 280         u32 tmp = 0;
 281         u64 gpu_addr;
 282         long r;
 283
 284         r = amdgpu_wb_get(adev, &index);
 285         if (r) {
 286                 dev_err(adev->dev, "(%ld) failed to allocate wb slot\n", r);
 287                 return r;
 288         }
 289
 290         gpu_addr = adev->wb.gpu_addr + (index * 4);
 291         tmp = 0xCAFEDEAD;
 292         adev->wb.wb[index] = cpu_to_le32(tmp);
 293         memset(&ib, 0, sizeof(ib));
 294         r = amdgpu_ib_get(adev, NULL, 256, &ib);
 295         if (r) {
 296                 DRM_ERROR("amdgpu: failed to get ib (%ld).\n", r);
 297                 goto err0;
 298         }
 299
 300         ib.ptr[0] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1);
 301         ib.ptr[1] = lower_32_bits(gpu_addr);
 302         ib.ptr[2] = upper_32_bits(gpu_addr) & 0xff;
 303         ib.ptr[3] = 0xDEADBEEF;
 304         ib.length_dw = 4;
 305         r = amdgpu_ib_schedule(ring, 1, &ib, NULL, &f);
 306         if (r)
 307                 goto err1;
 308
 309         r = dma_fence_wait_timeout(f, false, timeout);
 310         if (r == 0) {
 311                 DRM_ERROR("amdgpu: IB test timed out\n");
 312                 r = -ETIMEDOUT;
 313                 goto err1;
 314         } else if (r < 0) {
 315                 DRM_ERROR("amdgpu: fence wait failed (%ld).\n", r);
 316                 goto err1;
 317         }
 318         tmp = le32_to_cpu(adev->wb.wb[index]);
 319         if (tmp == 0xDEADBEEF) {
 320                 DRM_INFO("ib test on ring %d succeeded\n", ring->idx);
 321                 r = 0;
 322         } else {
 323                 DRM_ERROR("amdgpu: ib test failed (0x%08X)\n", tmp);
 324                 r = -EINVAL;
 325         }
 326
 327 err1:
 328         amdgpu_ib_free(adev, &ib, NULL);
 329         dma_fence_put(f);
 330 err0:
 331         amdgpu_wb_free(adev, index);
 332         return r;
 333 }
 334
 335 /**
 336  * cik_dma_vm_copy_pte - update PTEs by copying them from the GART
 337  *
 338  * @ib: indirect buffer to fill with commands
 339  * @pe: addr of the page entry
 340  * @src: src addr to copy from
 341  * @count: number of page entries to update
 342  *
 343  * Update PTEs by copying them from the GART using DMA (SI).
 344  */
 345 static void si_dma_vm_copy_pte(struct amdgpu_ib *ib,
 346                                uint64_t pe, uint64_t src,
 347                                unsigned count)
 348 {
 349         unsigned bytes = count * 8;
 350
 351         ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
 352                                               1, 0, 0, bytes);
 353         ib->ptr[ib->length_dw++] = lower_32_bits(pe);
 354         ib->ptr[ib->length_dw++] = lower_32_bits(src);
 355         ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
 356         ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff;
 357 }
 358
 359 /**
 360  * si_dma_vm_write_pte - update PTEs by writing them manually
 361  *
 362  * @ib: indirect buffer to fill with commands
 363  * @pe: addr of the page entry
 364  * @value: dst addr to write into pe
 365  * @count: number of page entries to update
 366  * @incr: increase next addr by incr bytes
 367  *
 368  * Update PTEs by writing them manually using DMA (SI).
 369  */
 370 static void si_dma_vm_write_pte(struct amdgpu_ib *ib, uint64_t pe,
 371                                 uint64_t value, unsigned count,
 372                                 uint32_t incr)
 373 {
 374         unsigned ndw = count * 2;
 375
 376         ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw);
 377         ib->ptr[ib->length_dw++] = lower_32_bits(pe);
 378         ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 379         for (; ndw > 0; ndw -= 2) {
 380                 ib->ptr[ib->length_dw++] = lower_32_bits(value);
 381                 ib->ptr[ib->length_dw++] = upper_32_bits(value);
 382                 value += incr;
 383         }
 384 }
 385
 386 /**
 387  * si_dma_vm_set_pte_pde - update the page tables using sDMA
 388  *
 389  * @ib: indirect buffer to fill with commands
 390  * @pe: addr of the page entry
 391  * @addr: dst addr to write into pe
 392  * @count: number of page entries to update
 393  * @incr: increase next addr by incr bytes
 394  * @flags: access flags
 395  *
 396  * Update the page tables using sDMA (CIK).
 397  */
 398 static void si_dma_vm_set_pte_pde(struct amdgpu_ib *ib,
 399                                      uint64_t pe,
 400                                      uint64_t addr, unsigned count,
 401                                      uint32_t incr, uint64_t flags)
 402 {
 403         uint64_t value;
 404         unsigned ndw;
 405
 406         while (count) {
 407                 ndw = count * 2;
 408                 if (ndw > 0xFFFFE)
 409                         ndw = 0xFFFFE;
 410
 411                 if (flags & AMDGPU_PTE_VALID)
 412                         value = addr;
 413                 else
 414                         value = 0;
 415
 416                 /* for physically contiguous pages (vram) */
 417                 ib->ptr[ib->length_dw++] = DMA_PTE_PDE_PACKET(ndw);
 418                 ib->ptr[ib->length_dw++] = pe; /* dst addr */
 419                 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
 420                 ib->ptr[ib->length_dw++] = lower_32_bits(flags); /* mask */
 421                 ib->ptr[ib->length_dw++] = upper_32_bits(flags);
 422                 ib->ptr[ib->length_dw++] = value; /* value */
 423                 ib->ptr[ib->length_dw++] = upper_32_bits(value);
 424                 ib->ptr[ib->length_dw++] = incr; /* increment size */
 425                 ib->ptr[ib->length_dw++] = 0;
 426                 pe += ndw * 4;
 427                 addr += (ndw / 2) * incr;
 428                 count -= ndw / 2;
 429         }
 430 }
 431
 432 /**
 433  * si_dma_pad_ib - pad the IB to the required number of dw
 434  *
 435  * @ib: indirect buffer to fill with padding
 436  *
 437  */
 438 static void si_dma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib)
 439 {
 440         while (ib->length_dw & 0x7)
 441                 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0);
 442 }
 443
 444 /**
 445  * cik_sdma_ring_emit_pipeline_sync - sync the pipeline
 446  *
 447  * @ring: amdgpu_ring pointer
 448  *
 449  * Make sure all previous operations are completed (CIK).
 450  */
 451 static void si_dma_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
 452 {
 453         uint32_t seq = ring->fence_drv.sync_seq;
 454         uint64_t addr = ring->fence_drv.gpu_addr;
 455
 456         /* wait for idle */
 457         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0) |
 458                           (1 << 27)); /* Poll memory */
 459         amdgpu_ring_write(ring, lower_32_bits(addr));
 460         amdgpu_ring_write(ring, (0xff << 16) | upper_32_bits(addr)); /* retry, addr_hi */
 461         amdgpu_ring_write(ring, 0xffffffff); /* mask */
 462         amdgpu_ring_write(ring, seq); /* value */
 463         amdgpu_ring_write(ring, (3 << 28) | 0x20); /* func(equal) | poll interval */
 464 }
 465
 466 /**
 467  * si_dma_ring_emit_vm_flush - cik vm flush using sDMA
 468  *
 469  * @ring: amdgpu_ring pointer
 470  * @vm: amdgpu_vm pointer
 471  *
 472  * Update the page table base and flush the VM TLB
 473  * using sDMA (VI).
 474  */
 475 static void si_dma_ring_emit_vm_flush(struct amdgpu_ring *ring,
 476                                       unsigned vm_id, uint64_t pd_addr)
 477 {
 478         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
 479         if (vm_id < 8)
 480                 amdgpu_ring_write(ring, (0xf << 16) | (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + vm_id));
 481         else
 482                 amdgpu_ring_write(ring, (0xf << 16) | (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + (vm_id - 8)));
 483         amdgpu_ring_write(ring, pd_addr >> 12);
 484
 485         /* bits 0-7 are the VM contexts0-7 */
 486         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
 487         amdgpu_ring_write(ring, (0xf << 16) | (VM_INVALIDATE_REQUEST));
 488         amdgpu_ring_write(ring, 1 << vm_id);
 489
 490         /* wait for invalidate to complete */
 491         amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0));
 492         amdgpu_ring_write(ring, VM_INVALIDATE_REQUEST);
 493         amdgpu_ring_write(ring, 0xff << 16); /* retry */
 494         amdgpu_ring_write(ring, 1 << vm_id); /* mask */
 495         amdgpu_ring_write(ring, 0); /* value */
 496         amdgpu_ring_write(ring, (0 << 28) | 0x20); /* func(always) | poll interval */
 497 }
 498
 499 static int si_dma_early_init(void *handle)
 500 {
 501         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 502
 503         adev->sdma.num_instances = 2;
 504
 505         si_dma_set_ring_funcs(adev);
 506         si_dma_set_buffer_funcs(adev);
 507         si_dma_set_vm_pte_funcs(adev);
 508         si_dma_set_irq_funcs(adev);
 509
 510         return 0;
 511 }
 512
 513 static int si_dma_sw_init(void *handle)
 514 {
 515         struct amdgpu_ring *ring;
 516         int r, i;
 517         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 518
 519         /* DMA0 trap event */
 520         r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, 224, &adev->sdma.trap_irq);
 521         if (r)
 522                 return r;
 523
 524         /* DMA1 trap event */
 525         r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, 244, &adev->sdma.trap_irq_1);
 526         if (r)
 527                 return r;
 528
 529         for (i = 0; i < adev->sdma.num_instances; i++) {
 530                 ring = &adev->sdma.instance[i].ring;
 531                 ring->ring_obj = NULL;
 532                 ring->use_doorbell = false;
 533                 sprintf(ring->name, "sdma%d", i);
 534                 r = amdgpu_ring_init(adev, ring, 1024,
 535                                      &adev->sdma.trap_irq,
 536                                      (i == 0) ?
 537                                      AMDGPU_SDMA_IRQ_TRAP0 :
 538                                      AMDGPU_SDMA_IRQ_TRAP1);
 539                 if (r)
 540                         return r;
 541         }
 542
 543         return r;
 544 }
 545
 546 static int si_dma_sw_fini(void *handle)
 547 {
 548         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 549         int i;
 550
 551         for (i = 0; i < adev->sdma.num_instances; i++)
 552                 amdgpu_ring_fini(&adev->sdma.instance[i].ring);
 553
 554         return 0;
 555 }
 556
 557 static int si_dma_hw_init(void *handle)
 558 {
 559         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 560
 561         return si_dma_start(adev);
 562 }
 563
 564 static int si_dma_hw_fini(void *handle)
 565 {
 566         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 567
 568         si_dma_stop(adev);
 569
 570         return 0;
 571 }
 572
 573 static int si_dma_suspend(void *handle)
 574 {
 575         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 576
 577         return si_dma_hw_fini(adev);
 578 }
 579
 580 static int si_dma_resume(void *handle)
 581 {
 582         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 583
 584         return si_dma_hw_init(adev);
 585 }
 586
 587 static bool si_dma_is_idle(void *handle)
 588 {
 589         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 590         u32 tmp = RREG32(SRBM_STATUS2);
 591
 592         if (tmp & (DMA_BUSY_MASK | DMA1_BUSY_MASK))
 593             return false;
 594
 595         return true;
 596 }
 597
 598 static int si_dma_wait_for_idle(void *handle)
 599 {
 600         unsigned i;
 601         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 602
 603         for (i = 0; i < adev->usec_timeout; i++) {
 604                 if (si_dma_is_idle(handle))
 605                         return 0;
 606                 udelay(1);
 607         }
 608         return -ETIMEDOUT;
 609 }
 610
 611 static int si_dma_soft_reset(void *handle)
 612 {
 613         DRM_INFO("si_dma_soft_reset --- not implemented !!!!!!!\n");
 614         return 0;
 615 }
 616
 617 static int si_dma_set_trap_irq_state(struct amdgpu_device *adev,
 618                                         struct amdgpu_irq_src *src,
 619                                         unsigned type,
 620                                         enum amdgpu_interrupt_state state)
 621 {
 622         u32 sdma_cntl;
 623
 624         switch (type) {
 625         case AMDGPU_SDMA_IRQ_TRAP0:
 626                 switch (state) {
 627                 case AMDGPU_IRQ_STATE_DISABLE:
 628                         sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET);
 629                         sdma_cntl &= ~TRAP_ENABLE;
 630                         WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl);
 631                         break;
 632                 case AMDGPU_IRQ_STATE_ENABLE:
 633                         sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET);
 634                         sdma_cntl |= TRAP_ENABLE;
 635                         WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl);
 636                         break;
 637                 default:
 638                         break;
 639                 }
 640                 break;
 641         case AMDGPU_SDMA_IRQ_TRAP1:
 642                 switch (state) {
 643                 case AMDGPU_IRQ_STATE_DISABLE:
 644                         sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET);
 645                         sdma_cntl &= ~TRAP_ENABLE;
 646                         WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl);
 647                         break;
 648                 case AMDGPU_IRQ_STATE_ENABLE:
 649                         sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET);
 650                         sdma_cntl |= TRAP_ENABLE;
 651                         WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl);
 652                         break;
 653                 default:
 654                         break;
 655                 }
 656                 break;
 657         default:
 658                 break;
 659         }
 660         return 0;
 661 }
 662
 663 static int si_dma_process_trap_irq(struct amdgpu_device *adev,
 664                                       struct amdgpu_irq_src *source,
 665                                       struct amdgpu_iv_entry *entry)
 666 {
 667         amdgpu_fence_process(&adev->sdma.instance[0].ring);
 668
 669         return 0;
 670 }
 671
 672 static int si_dma_process_trap_irq_1(struct amdgpu_device *adev,
 673                                       struct amdgpu_irq_src *source,
 674                                       struct amdgpu_iv_entry *entry)
 675 {
 676         amdgpu_fence_process(&adev->sdma.instance[1].ring);
 677
 678         return 0;
 679 }
 680
 681 static int si_dma_process_illegal_inst_irq(struct amdgpu_device *adev,
 682                                               struct amdgpu_irq_src *source,
 683                                               struct amdgpu_iv_entry *entry)
 684 {
 685         DRM_ERROR("Illegal instruction in SDMA command stream\n");
 686         schedule_work(&adev->reset_work);
 687         return 0;
 688 }
 689
 690 static int si_dma_set_clockgating_state(void *handle,
 691                                           enum amd_clockgating_state state)
 692 {
 693         u32 orig, data, offset;
 694         int i;
 695         bool enable;
 696         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 697
 698         enable = (state == AMD_CG_STATE_GATE) ? true : false;
 699
 700         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) {
 701                 for (i = 0; i < adev->sdma.num_instances; i++) {
 702                         if (i == 0)
 703                                 offset = DMA0_REGISTER_OFFSET;
 704                         else
 705                                 offset = DMA1_REGISTER_OFFSET;
 706                         orig = data = RREG32(DMA_POWER_CNTL + offset);
 707                         data &= ~MEM_POWER_OVERRIDE;
 708                         if (data != orig)
 709                                 WREG32(DMA_POWER_CNTL + offset, data);
 710                         WREG32(DMA_CLK_CTRL + offset, 0x00000100);
 711                 }
 712         } else {
 713                 for (i = 0; i < adev->sdma.num_instances; i++) {
 714                         if (i == 0)
 715                                 offset = DMA0_REGISTER_OFFSET;
 716                         else
 717                                 offset = DMA1_REGISTER_OFFSET;
 718                         orig = data = RREG32(DMA_POWER_CNTL + offset);
 719                         data |= MEM_POWER_OVERRIDE;
 720                         if (data != orig)
 721                                 WREG32(DMA_POWER_CNTL + offset, data);
 722
 723                         orig = data = RREG32(DMA_CLK_CTRL + offset);
 724                         data = 0xff000000;
 725                         if (data != orig)
 726                                 WREG32(DMA_CLK_CTRL + offset, data);
 727                 }
 728         }
 729
 730         return 0;
 731 }
 732
 733 static int si_dma_set_powergating_state(void *handle,
 734                                           enum amd_powergating_state state)
 735 {
 736         u32 tmp;
 737
 738         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 739
 740         WREG32(DMA_PGFSM_WRITE,  0x00002000);
 741         WREG32(DMA_PGFSM_CONFIG, 0x100010ff);
 742
 743         for (tmp = 0; tmp < 5; tmp++)
 744                 WREG32(DMA_PGFSM_WRITE, 0);
 745
 746         return 0;
 747 }
 748
 749 static const struct amd_ip_funcs si_dma_ip_funcs = {
 750         .name = "si_dma",
 751         .early_init = si_dma_early_init,
 752         .late_init = NULL,
 753         .sw_init = si_dma_sw_init,
 754         .sw_fini = si_dma_sw_fini,
 755         .hw_init = si_dma_hw_init,
 756         .hw_fini = si_dma_hw_fini,
 757         .suspend = si_dma_suspend,
 758         .resume = si_dma_resume,
 759         .is_idle = si_dma_is_idle,
 760         .wait_for_idle = si_dma_wait_for_idle,
 761         .soft_reset = si_dma_soft_reset,
 762         .set_clockgating_state = si_dma_set_clockgating_state,
 763         .set_powergating_state = si_dma_set_powergating_state,
 764 };
 765
 766 static const struct amdgpu_ring_funcs si_dma_ring_funcs = {
 767         .type = AMDGPU_RING_TYPE_SDMA,
 768         .align_mask = 0xf,
 769         .nop = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0),
 770         .support_64bit_ptrs = false,
 771         .get_rptr = si_dma_ring_get_rptr,
 772         .get_wptr = si_dma_ring_get_wptr,
 773         .set_wptr = si_dma_ring_set_wptr,
 774         .emit_frame_size =
 775                 3 + /* si_dma_ring_emit_hdp_flush */
 776                 3 + /* si_dma_ring_emit_hdp_invalidate */
 777                 6 + /* si_dma_ring_emit_pipeline_sync */
 778                 12 + /* si_dma_ring_emit_vm_flush */
 779                 9 + 9 + 9, /* si_dma_ring_emit_fence x3 for user fence, vm fence */
 780         .emit_ib_size = 7 + 3, /* si_dma_ring_emit_ib */
 781         .emit_ib = si_dma_ring_emit_ib,
 782         .emit_fence = si_dma_ring_emit_fence,
 783         .emit_pipeline_sync = si_dma_ring_emit_pipeline_sync,
 784         .emit_vm_flush = si_dma_ring_emit_vm_flush,
 785         .emit_hdp_flush = si_dma_ring_emit_hdp_flush,
 786         .emit_hdp_invalidate = si_dma_ring_emit_hdp_invalidate,
 787         .test_ring = si_dma_ring_test_ring,
 788         .test_ib = si_dma_ring_test_ib,
 789         .insert_nop = amdgpu_ring_insert_nop,
 790         .pad_ib = si_dma_ring_pad_ib,
 791 };
 792
 793 static void si_dma_set_ring_funcs(struct amdgpu_device *adev)
 794 {
 795         int i;
 796
 797         for (i = 0; i < adev->sdma.num_instances; i++)
 798                 adev->sdma.instance[i].ring.funcs = &si_dma_ring_funcs;
 799 }
 800
 801 static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs = {
 802         .set = si_dma_set_trap_irq_state,
 803         .process = si_dma_process_trap_irq,
 804 };
 805
 806 static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs_1 = {
 807         .set = si_dma_set_trap_irq_state,
 808         .process = si_dma_process_trap_irq_1,
 809 };
 810
 811 static const struct amdgpu_irq_src_funcs si_dma_illegal_inst_irq_funcs = {
 812         .process = si_dma_process_illegal_inst_irq,
 813 };
 814
 815 static void si_dma_set_irq_funcs(struct amdgpu_device *adev)
 816 {
 817         adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST;
 818         adev->sdma.trap_irq.funcs = &si_dma_trap_irq_funcs;
 819         adev->sdma.trap_irq_1.funcs = &si_dma_trap_irq_funcs_1;
 820         adev->sdma.illegal_inst_irq.funcs = &si_dma_illegal_inst_irq_funcs;
 821 }
 822
 823 /**
 824  * si_dma_emit_copy_buffer - copy buffer using the sDMA engine
 825  *
 826  * @ring: amdgpu_ring structure holding ring information
 827  * @src_offset: src GPU address
 828  * @dst_offset: dst GPU address
 829  * @byte_count: number of bytes to xfer
 830  *
 831  * Copy GPU buffers using the DMA engine (VI).
 832  * Used by the amdgpu ttm implementation to move pages if
 833  * registered as the asic copy callback.
 834  */
 835 static void si_dma_emit_copy_buffer(struct amdgpu_ib *ib,
 836                                        uint64_t src_offset,
 837                                        uint64_t dst_offset,
 838                                        uint32_t byte_count)
 839 {
 840         ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
 841                                               1, 0, 0, byte_count);
 842         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
 843         ib->ptr[ib->length_dw++] = lower_32_bits(src_offset);
 844         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) & 0xff;
 845         ib->ptr[ib->length_dw++] = upper_32_bits(src_offset) & 0xff;
 846 }
 847
 848 /**
 849  * si_dma_emit_fill_buffer - fill buffer using the sDMA engine
 850  *
 851  * @ring: amdgpu_ring structure holding ring information
 852  * @src_data: value to write to buffer
 853  * @dst_offset: dst GPU address
 854  * @byte_count: number of bytes to xfer
 855  *
 856  * Fill GPU buffers using the DMA engine (VI).
 857  */
 858 static void si_dma_emit_fill_buffer(struct amdgpu_ib *ib,
 859                                        uint32_t src_data,
 860                                        uint64_t dst_offset,
 861                                        uint32_t byte_count)
 862 {
 863         ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_CONSTANT_FILL,
 864                                               0, 0, 0, byte_count / 4);
 865         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
 866         ib->ptr[ib->length_dw++] = src_data;
 867         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) << 16;
 868 }
 869
 870
 871 static const struct amdgpu_buffer_funcs si_dma_buffer_funcs = {
 872         .copy_max_bytes = 0xffff8,
 873         .copy_num_dw = 5,
 874         .emit_copy_buffer = si_dma_emit_copy_buffer,
 875
 876         .fill_max_bytes = 0xffff8,
 877         .fill_num_dw = 4,
 878         .emit_fill_buffer = si_dma_emit_fill_buffer,
 879 };
 880
 881 static void si_dma_set_buffer_funcs(struct amdgpu_device *adev)
 882 {
 883         if (adev->mman.buffer_funcs == NULL) {
 884                 adev->mman.buffer_funcs = &si_dma_buffer_funcs;
 885                 adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
 886         }
 887 }
 888
 889 static const struct amdgpu_vm_pte_funcs si_dma_vm_pte_funcs = {
 890         .copy_pte = si_dma_vm_copy_pte,
 891         .write_pte = si_dma_vm_write_pte,
 892         .set_pte_pde = si_dma_vm_set_pte_pde,
 893 };
 894
 895 static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev)
 896 {
 897         unsigned i;
 898
 899         if (adev->vm_manager.vm_pte_funcs == NULL) {
 900                 adev->vm_manager.vm_pte_funcs = &si_dma_vm_pte_funcs;
 901                 for (i = 0; i < adev->sdma.num_instances; i++)
 902                         adev->vm_manager.vm_pte_rings[i] =
 903                                 &adev->sdma.instance[i].ring;
 904
 905                 adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
 906         }
 907 }
 908
 909 const struct amdgpu_ip_block_version si_dma_ip_block =
 910 {
 911         .type = AMD_IP_BLOCK_TYPE_SDMA,
 912         .major = 1,
 913         .minor = 0,
 914         .rev = 0,
 915         .funcs = &si_dma_ip_funcs,
 916 };