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

   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 "amdgpu.h"
  27 #include "amdgpu_ucode.h"
  28 #include "amdgpu_trace.h"
  29 #include "cikd.h"
  30 #include "cik.h"
  31
  32 #include "bif/bif_4_1_d.h"
  33 #include "bif/bif_4_1_sh_mask.h"
  34
  35 #include "gca/gfx_7_2_d.h"
  36 #include "gca/gfx_7_2_enum.h"
  37 #include "gca/gfx_7_2_sh_mask.h"
  38
  39 #include "gmc/gmc_7_1_d.h"
  40 #include "gmc/gmc_7_1_sh_mask.h"
  41
  42 #include "oss/oss_2_0_d.h"
  43 #include "oss/oss_2_0_sh_mask.h"
  44
  45 static const u32 sdma_offsets[SDMA_MAX_INSTANCE] =
  46 {
  47         SDMA0_REGISTER_OFFSET,
  48         SDMA1_REGISTER_OFFSET
  49 };
  50
  51 static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev);
  52 static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev);
  53 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev);
  54 static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev);
  55 static int cik_sdma_soft_reset(void *handle);
  56
  57 MODULE_FIRMWARE("radeon/bonaire_sdma.bin");
  58 MODULE_FIRMWARE("radeon/bonaire_sdma1.bin");
  59 MODULE_FIRMWARE("radeon/hawaii_sdma.bin");
  60 MODULE_FIRMWARE("radeon/hawaii_sdma1.bin");
  61 MODULE_FIRMWARE("radeon/kaveri_sdma.bin");
  62 MODULE_FIRMWARE("radeon/kaveri_sdma1.bin");
  63 MODULE_FIRMWARE("radeon/kabini_sdma.bin");
  64 MODULE_FIRMWARE("radeon/kabini_sdma1.bin");
  65 MODULE_FIRMWARE("radeon/mullins_sdma.bin");
  66 MODULE_FIRMWARE("radeon/mullins_sdma1.bin");
  67
  68 u32 amdgpu_cik_gpu_check_soft_reset(struct amdgpu_device *adev);
  69
  70
  71 static void cik_sdma_free_microcode(struct amdgpu_device *adev)
  72 {
  73         int i;
  74         for (i = 0; i < adev->sdma.num_instances; i++) {
  75                         release_firmware(adev->sdma.instance[i].fw);
  76                         adev->sdma.instance[i].fw = NULL;
  77         }
  78 }
  79
  80 /*
  81  * sDMA - System DMA
  82  * Starting with CIK, the GPU has new asynchronous
  83  * DMA engines.  These engines are used for compute
  84  * and gfx.  There are two DMA engines (SDMA0, SDMA1)
  85  * and each one supports 1 ring buffer used for gfx
  86  * and 2 queues used for compute.
  87  *
  88  * The programming model is very similar to the CP
  89  * (ring buffer, IBs, etc.), but sDMA has it's own
  90  * packet format that is different from the PM4 format
  91  * used by the CP. sDMA supports copying data, writing
  92  * embedded data, solid fills, and a number of other
  93  * things.  It also has support for tiling/detiling of
  94  * buffers.
  95  */
  96
  97 /**
  98  * cik_sdma_init_microcode - load ucode images from disk
  99  *
 100  * @adev: amdgpu_device pointer
 101  *
 102  * Use the firmware interface to load the ucode images into
 103  * the driver (not loaded into hw).
 104  * Returns 0 on success, error on failure.
 105  */
 106 static int cik_sdma_init_microcode(struct amdgpu_device *adev)
 107 {
 108         const char *chip_name;
 109         char fw_name[30];
 110         int err = 0, i;
 111
 112         DRM_DEBUG("\n");
 113
 114         switch (adev->asic_type) {
 115         case CHIP_BONAIRE:
 116                 chip_name = "bonaire";
 117                 break;
 118         case CHIP_HAWAII:
 119                 chip_name = "hawaii";
 120                 break;
 121         case CHIP_KAVERI:
 122                 chip_name = "kaveri";
 123                 break;
 124         case CHIP_KABINI:
 125                 chip_name = "kabini";
 126                 break;
 127         case CHIP_MULLINS:
 128                 chip_name = "mullins";
 129                 break;
 130         default: BUG();
 131         }
 132
 133         for (i = 0; i < adev->sdma.num_instances; i++) {
 134                 if (i == 0)
 135                         snprintf(fw_name, sizeof(fw_name), "radeon/%s_sdma.bin", chip_name);
 136                 else
 137                         snprintf(fw_name, sizeof(fw_name), "radeon/%s_sdma1.bin", chip_name);
 138                 err = request_firmware(&adev->sdma.instance[i].fw, fw_name, adev->dev);
 139                 if (err)
 140                         goto out;
 141                 err = amdgpu_ucode_validate(adev->sdma.instance[i].fw);
 142         }
 143 out:
 144         if (err) {
 145                 printk(KERN_ERR
 146                        "cik_sdma: Failed to load firmware \"%s\"\n",
 147                        fw_name);
 148                 for (i = 0; i < adev->sdma.num_instances; i++) {
 149                         release_firmware(adev->sdma.instance[i].fw);
 150                         adev->sdma.instance[i].fw = NULL;
 151                 }
 152         }
 153         return err;
 154 }
 155
 156 /**
 157  * cik_sdma_ring_get_rptr - get the current read pointer
 158  *
 159  * @ring: amdgpu ring pointer
 160  *
 161  * Get the current rptr from the hardware (CIK+).
 162  */
 163 static uint32_t cik_sdma_ring_get_rptr(struct amdgpu_ring *ring)
 164 {
 165         u32 rptr;
 166
 167         rptr = ring->adev->wb.wb[ring->rptr_offs];
 168
 169         return (rptr & 0x3fffc) >> 2;
 170 }
 171
 172 /**
 173  * cik_sdma_ring_get_wptr - get the current write pointer
 174  *
 175  * @ring: amdgpu ring pointer
 176  *
 177  * Get the current wptr from the hardware (CIK+).
 178  */
 179 static uint32_t cik_sdma_ring_get_wptr(struct amdgpu_ring *ring)
 180 {
 181         struct amdgpu_device *adev = ring->adev;
 182         u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1;
 183
 184         return (RREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[me]) & 0x3fffc) >> 2;
 185 }
 186
 187 /**
 188  * cik_sdma_ring_set_wptr - commit the write pointer
 189  *
 190  * @ring: amdgpu ring pointer
 191  *
 192  * Write the wptr back to the hardware (CIK+).
 193  */
 194 static void cik_sdma_ring_set_wptr(struct amdgpu_ring *ring)
 195 {
 196         struct amdgpu_device *adev = ring->adev;
 197         u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1;
 198
 199         WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[me], (ring->wptr << 2) & 0x3fffc);
 200 }
 201
 202 static void cik_sdma_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
 203 {
 204         struct amdgpu_sdma_instance *sdma = amdgpu_get_sdma_instance(ring);
 205         int i;
 206
 207         for (i = 0; i < count; i++)
 208                 if (sdma && sdma->burst_nop && (i == 0))
 209                         amdgpu_ring_write(ring, ring->nop |
 210                                           SDMA_NOP_COUNT(count - 1));
 211                 else
 212                         amdgpu_ring_write(ring, ring->nop);
 213 }
 214
 215 /**
 216  * cik_sdma_ring_emit_ib - Schedule an IB on the DMA engine
 217  *
 218  * @ring: amdgpu ring pointer
 219  * @ib: IB object to schedule
 220  *
 221  * Schedule an IB in the DMA ring (CIK).
 222  */
 223 static void cik_sdma_ring_emit_ib(struct amdgpu_ring *ring,
 224                                   struct amdgpu_ib *ib,
 225                                   unsigned vm_id, bool ctx_switch)
 226 {
 227         u32 extra_bits = vm_id & 0xf;
 228
 229         /* IB packet must end on a 8 DW boundary */
 230         cik_sdma_ring_insert_nop(ring, (12 - (ring->wptr & 7)) % 8);
 231
 232         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_INDIRECT_BUFFER, 0, extra_bits));
 233         amdgpu_ring_write(ring, ib->gpu_addr & 0xffffffe0); /* base must be 32 byte aligned */
 234         amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr) & 0xffffffff);
 235         amdgpu_ring_write(ring, ib->length_dw);
 236
 237 }
 238
 239 /**
 240  * cik_sdma_ring_emit_hdp_flush - emit an hdp flush on the DMA ring
 241  *
 242  * @ring: amdgpu ring pointer
 243  *
 244  * Emit an hdp flush packet on the requested DMA ring.
 245  */
 246 static void cik_sdma_ring_emit_hdp_flush(struct amdgpu_ring *ring)
 247 {
 248         u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) |
 249                           SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */
 250         u32 ref_and_mask;
 251
 252         if (ring == &ring->adev->sdma.instance[0].ring)
 253                 ref_and_mask = GPU_HDP_FLUSH_DONE__SDMA0_MASK;
 254         else
 255                 ref_and_mask = GPU_HDP_FLUSH_DONE__SDMA1_MASK;
 256
 257         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
 258         amdgpu_ring_write(ring, mmGPU_HDP_FLUSH_DONE << 2);
 259         amdgpu_ring_write(ring, mmGPU_HDP_FLUSH_REQ << 2);
 260         amdgpu_ring_write(ring, ref_and_mask); /* reference */
 261         amdgpu_ring_write(ring, ref_and_mask); /* mask */
 262         amdgpu_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
 263 }
 264
 265 static void cik_sdma_ring_emit_hdp_invalidate(struct amdgpu_ring *ring)
 266 {
 267         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 268         amdgpu_ring_write(ring, mmHDP_DEBUG0);
 269         amdgpu_ring_write(ring, 1);
 270 }
 271
 272 /**
 273  * cik_sdma_ring_emit_fence - emit a fence on the DMA ring
 274  *
 275  * @ring: amdgpu ring pointer
 276  * @fence: amdgpu fence object
 277  *
 278  * Add a DMA fence packet to the ring to write
 279  * the fence seq number and DMA trap packet to generate
 280  * an interrupt if needed (CIK).
 281  */
 282 static void cik_sdma_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq,
 283                                      unsigned flags)
 284 {
 285         bool write64bit = flags & AMDGPU_FENCE_FLAG_64BIT;
 286         /* write the fence */
 287         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0));
 288         amdgpu_ring_write(ring, lower_32_bits(addr));
 289         amdgpu_ring_write(ring, upper_32_bits(addr));
 290         amdgpu_ring_write(ring, lower_32_bits(seq));
 291
 292         /* optionally write high bits as well */
 293         if (write64bit) {
 294                 addr += 4;
 295                 amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0));
 296                 amdgpu_ring_write(ring, lower_32_bits(addr));
 297                 amdgpu_ring_write(ring, upper_32_bits(addr));
 298                 amdgpu_ring_write(ring, upper_32_bits(seq));
 299         }
 300
 301         /* generate an interrupt */
 302         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0));
 303 }
 304
 305 /**
 306  * cik_sdma_gfx_stop - stop the gfx async dma engines
 307  *
 308  * @adev: amdgpu_device pointer
 309  *
 310  * Stop the gfx async dma ring buffers (CIK).
 311  */
 312 static void cik_sdma_gfx_stop(struct amdgpu_device *adev)
 313 {
 314         struct amdgpu_ring *sdma0 = &adev->sdma.instance[0].ring;
 315         struct amdgpu_ring *sdma1 = &adev->sdma.instance[1].ring;
 316         u32 rb_cntl;
 317         int i;
 318
 319         if ((adev->mman.buffer_funcs_ring == sdma0) ||
 320             (adev->mman.buffer_funcs_ring == sdma1))
 321                 amdgpu_ttm_set_active_vram_size(adev, adev->mc.visible_vram_size);
 322
 323         for (i = 0; i < adev->sdma.num_instances; i++) {
 324                 rb_cntl = RREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i]);
 325                 rb_cntl &= ~SDMA0_GFX_RB_CNTL__RB_ENABLE_MASK;
 326                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i], rb_cntl);
 327                 WREG32(mmSDMA0_GFX_IB_CNTL + sdma_offsets[i], 0);
 328         }
 329         sdma0->ready = false;
 330         sdma1->ready = false;
 331 }
 332
 333 /**
 334  * cik_sdma_rlc_stop - stop the compute async dma engines
 335  *
 336  * @adev: amdgpu_device pointer
 337  *
 338  * Stop the compute async dma queues (CIK).
 339  */
 340 static void cik_sdma_rlc_stop(struct amdgpu_device *adev)
 341 {
 342         /* XXX todo */
 343 }
 344
 345 /**
 346  * cik_sdma_enable - stop the async dma engines
 347  *
 348  * @adev: amdgpu_device pointer
 349  * @enable: enable/disable the DMA MEs.
 350  *
 351  * Halt or unhalt the async dma engines (CIK).
 352  */
 353 static void cik_sdma_enable(struct amdgpu_device *adev, bool enable)
 354 {
 355         u32 me_cntl;
 356         int i;
 357
 358         if (!enable) {
 359                 cik_sdma_gfx_stop(adev);
 360                 cik_sdma_rlc_stop(adev);
 361         }
 362
 363         for (i = 0; i < adev->sdma.num_instances; i++) {
 364                 me_cntl = RREG32(mmSDMA0_F32_CNTL + sdma_offsets[i]);
 365                 if (enable)
 366                         me_cntl &= ~SDMA0_F32_CNTL__HALT_MASK;
 367                 else
 368                         me_cntl |= SDMA0_F32_CNTL__HALT_MASK;
 369                 WREG32(mmSDMA0_F32_CNTL + sdma_offsets[i], me_cntl);
 370         }
 371 }
 372
 373 /**
 374  * cik_sdma_gfx_resume - setup and start the async dma engines
 375  *
 376  * @adev: amdgpu_device pointer
 377  *
 378  * Set up the gfx DMA ring buffers and enable them (CIK).
 379  * Returns 0 for success, error for failure.
 380  */
 381 static int cik_sdma_gfx_resume(struct amdgpu_device *adev)
 382 {
 383         struct amdgpu_ring *ring;
 384         u32 rb_cntl, ib_cntl;
 385         u32 rb_bufsz;
 386         u32 wb_offset;
 387         int i, j, r;
 388
 389         for (i = 0; i < adev->sdma.num_instances; i++) {
 390                 ring = &adev->sdma.instance[i].ring;
 391                 wb_offset = (ring->rptr_offs * 4);
 392
 393                 mutex_lock(&adev->srbm_mutex);
 394                 for (j = 0; j < 16; j++) {
 395                         cik_srbm_select(adev, 0, 0, 0, j);
 396                         /* SDMA GFX */
 397                         WREG32(mmSDMA0_GFX_VIRTUAL_ADDR + sdma_offsets[i], 0);
 398                         WREG32(mmSDMA0_GFX_APE1_CNTL + sdma_offsets[i], 0);
 399                         /* XXX SDMA RLC - todo */
 400                 }
 401                 cik_srbm_select(adev, 0, 0, 0, 0);
 402                 mutex_unlock(&adev->srbm_mutex);
 403
 404                 WREG32(mmSDMA0_TILING_CONFIG + sdma_offsets[i],
 405                        adev->gfx.config.gb_addr_config & 0x70);
 406
 407                 WREG32(mmSDMA0_SEM_INCOMPLETE_TIMER_CNTL + sdma_offsets[i], 0);
 408                 WREG32(mmSDMA0_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0);
 409
 410                 /* Set ring buffer size in dwords */
 411                 rb_bufsz = order_base_2(ring->ring_size / 4);
 412                 rb_cntl = rb_bufsz << 1;
 413 #ifdef __BIG_ENDIAN
 414                 rb_cntl |= SDMA0_GFX_RB_CNTL__RB_SWAP_ENABLE_MASK |
 415                         SDMA0_GFX_RB_CNTL__RPTR_WRITEBACK_SWAP_ENABLE_MASK;
 416 #endif
 417                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i], rb_cntl);
 418
 419                 /* Initialize the ring buffer's read and write pointers */
 420                 WREG32(mmSDMA0_GFX_RB_RPTR + sdma_offsets[i], 0);
 421                 WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[i], 0);
 422                 WREG32(mmSDMA0_GFX_IB_RPTR + sdma_offsets[i], 0);
 423                 WREG32(mmSDMA0_GFX_IB_OFFSET + sdma_offsets[i], 0);
 424
 425                 /* set the wb address whether it's enabled or not */
 426                 WREG32(mmSDMA0_GFX_RB_RPTR_ADDR_HI + sdma_offsets[i],
 427                        upper_32_bits(adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF);
 428                 WREG32(mmSDMA0_GFX_RB_RPTR_ADDR_LO + sdma_offsets[i],
 429                        ((adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC));
 430
 431                 rb_cntl |= SDMA0_GFX_RB_CNTL__RPTR_WRITEBACK_ENABLE_MASK;
 432
 433                 WREG32(mmSDMA0_GFX_RB_BASE + sdma_offsets[i], ring->gpu_addr >> 8);
 434                 WREG32(mmSDMA0_GFX_RB_BASE_HI + sdma_offsets[i], ring->gpu_addr >> 40);
 435
 436                 ring->wptr = 0;
 437                 WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[i], ring->wptr << 2);
 438
 439                 /* enable DMA RB */
 440                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i],
 441                        rb_cntl | SDMA0_GFX_RB_CNTL__RB_ENABLE_MASK);
 442
 443                 ib_cntl = SDMA0_GFX_IB_CNTL__IB_ENABLE_MASK;
 444 #ifdef __BIG_ENDIAN
 445                 ib_cntl |= SDMA0_GFX_IB_CNTL__IB_SWAP_ENABLE_MASK;
 446 #endif
 447                 /* enable DMA IBs */
 448                 WREG32(mmSDMA0_GFX_IB_CNTL + sdma_offsets[i], ib_cntl);
 449
 450                 ring->ready = true;
 451         }
 452
 453         cik_sdma_enable(adev, true);
 454
 455         for (i = 0; i < adev->sdma.num_instances; i++) {
 456                 ring = &adev->sdma.instance[i].ring;
 457                 r = amdgpu_ring_test_ring(ring);
 458                 if (r) {
 459                         ring->ready = false;
 460                         return r;
 461                 }
 462
 463                 if (adev->mman.buffer_funcs_ring == ring)
 464                         amdgpu_ttm_set_active_vram_size(adev, adev->mc.real_vram_size);
 465         }
 466
 467         return 0;
 468 }
 469
 470 /**
 471  * cik_sdma_rlc_resume - setup and start the async dma engines
 472  *
 473  * @adev: amdgpu_device pointer
 474  *
 475  * Set up the compute DMA queues and enable them (CIK).
 476  * Returns 0 for success, error for failure.
 477  */
 478 static int cik_sdma_rlc_resume(struct amdgpu_device *adev)
 479 {
 480         /* XXX todo */
 481         return 0;
 482 }
 483
 484 /**
 485  * cik_sdma_load_microcode - load the sDMA ME ucode
 486  *
 487  * @adev: amdgpu_device pointer
 488  *
 489  * Loads the sDMA0/1 ucode.
 490  * Returns 0 for success, -EINVAL if the ucode is not available.
 491  */
 492 static int cik_sdma_load_microcode(struct amdgpu_device *adev)
 493 {
 494         const struct sdma_firmware_header_v1_0 *hdr;
 495         const __le32 *fw_data;
 496         u32 fw_size;
 497         int i, j;
 498
 499         /* halt the MEs */
 500         cik_sdma_enable(adev, false);
 501
 502         for (i = 0; i < adev->sdma.num_instances; i++) {
 503                 if (!adev->sdma.instance[i].fw)
 504                         return -EINVAL;
 505                 hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma.instance[i].fw->data;
 506                 amdgpu_ucode_print_sdma_hdr(&hdr->header);
 507                 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
 508                 adev->sdma.instance[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
 509                 adev->sdma.instance[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
 510                 if (adev->sdma.instance[i].feature_version >= 20)
 511                         adev->sdma.instance[i].burst_nop = true;
 512                 fw_data = (const __le32 *)
 513                         (adev->sdma.instance[i].fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
 514                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], 0);
 515                 for (j = 0; j < fw_size; j++)
 516                         WREG32(mmSDMA0_UCODE_DATA + sdma_offsets[i], le32_to_cpup(fw_data++));
 517                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], adev->sdma.instance[i].fw_version);
 518         }
 519
 520         return 0;
 521 }
 522
 523 /**
 524  * cik_sdma_start - setup and start the async dma engines
 525  *
 526  * @adev: amdgpu_device pointer
 527  *
 528  * Set up the DMA engines and enable them (CIK).
 529  * Returns 0 for success, error for failure.
 530  */
 531 static int cik_sdma_start(struct amdgpu_device *adev)
 532 {
 533         int r;
 534
 535         r = cik_sdma_load_microcode(adev);
 536         if (r)
 537                 return r;
 538
 539         /* halt the engine before programing */
 540         cik_sdma_enable(adev, false);
 541
 542         /* start the gfx rings and rlc compute queues */
 543         r = cik_sdma_gfx_resume(adev);
 544         if (r)
 545                 return r;
 546         r = cik_sdma_rlc_resume(adev);
 547         if (r)
 548                 return r;
 549
 550         return 0;
 551 }
 552
 553 /**
 554  * cik_sdma_ring_test_ring - simple async dma engine test
 555  *
 556  * @ring: amdgpu_ring structure holding ring information
 557  *
 558  * Test the DMA engine by writing using it to write an
 559  * value to memory. (CIK).
 560  * Returns 0 for success, error for failure.
 561  */
 562 static int cik_sdma_ring_test_ring(struct amdgpu_ring *ring)
 563 {
 564         struct amdgpu_device *adev = ring->adev;
 565         unsigned i;
 566         unsigned index;
 567         int r;
 568         u32 tmp;
 569         u64 gpu_addr;
 570
 571         r = amdgpu_wb_get(adev, &index);
 572         if (r) {
 573                 dev_err(adev->dev, "(%d) failed to allocate wb slot\n", r);
 574                 return r;
 575         }
 576
 577         gpu_addr = adev->wb.gpu_addr + (index * 4);
 578         tmp = 0xCAFEDEAD;
 579         adev->wb.wb[index] = cpu_to_le32(tmp);
 580
 581         r = amdgpu_ring_alloc(ring, 5);
 582         if (r) {
 583                 DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
 584                 amdgpu_wb_free(adev, index);
 585                 return r;
 586         }
 587         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0));
 588         amdgpu_ring_write(ring, lower_32_bits(gpu_addr));
 589         amdgpu_ring_write(ring, upper_32_bits(gpu_addr));
 590         amdgpu_ring_write(ring, 1); /* number of DWs to follow */
 591         amdgpu_ring_write(ring, 0xDEADBEEF);
 592         amdgpu_ring_commit(ring);
 593
 594         for (i = 0; i < adev->usec_timeout; i++) {
 595                 tmp = le32_to_cpu(adev->wb.wb[index]);
 596                 if (tmp == 0xDEADBEEF)
 597                         break;
 598                 DRM_UDELAY(1);
 599         }
 600
 601         if (i < adev->usec_timeout) {
 602                 DRM_INFO("ring test on %d succeeded in %d usecs\n", ring->idx, i);
 603         } else {
 604                 DRM_ERROR("amdgpu: ring %d test failed (0x%08X)\n",
 605                           ring->idx, tmp);
 606                 r = -EINVAL;
 607         }
 608         amdgpu_wb_free(adev, index);
 609
 610         return r;
 611 }
 612
 613 /**
 614  * cik_sdma_ring_test_ib - test an IB on the DMA engine
 615  *
 616  * @ring: amdgpu_ring structure holding ring information
 617  *
 618  * Test a simple IB in the DMA ring (CIK).
 619  * Returns 0 on success, error on failure.
 620  */
 621 static int cik_sdma_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 622 {
 623         struct amdgpu_device *adev = ring->adev;
 624         struct amdgpu_ib ib;
 625         struct fence *f = NULL;
 626         unsigned index;
 627         u32 tmp = 0;
 628         u64 gpu_addr;
 629         long r;
 630
 631         r = amdgpu_wb_get(adev, &index);
 632         if (r) {
 633                 dev_err(adev->dev, "(%ld) failed to allocate wb slot\n", r);
 634                 return r;
 635         }
 636
 637         gpu_addr = adev->wb.gpu_addr + (index * 4);
 638         tmp = 0xCAFEDEAD;
 639         adev->wb.wb[index] = cpu_to_le32(tmp);
 640         memset(&ib, 0, sizeof(ib));
 641         r = amdgpu_ib_get(adev, NULL, 256, &ib);
 642         if (r) {
 643                 DRM_ERROR("amdgpu: failed to get ib (%ld).\n", r);
 644                 goto err0;
 645         }
 646
 647         ib.ptr[0] = SDMA_PACKET(SDMA_OPCODE_WRITE,
 648                                 SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 649         ib.ptr[1] = lower_32_bits(gpu_addr);
 650         ib.ptr[2] = upper_32_bits(gpu_addr);
 651         ib.ptr[3] = 1;
 652         ib.ptr[4] = 0xDEADBEEF;
 653         ib.length_dw = 5;
 654         r = amdgpu_ib_schedule(ring, 1, &ib, NULL, NULL, &f);
 655         if (r)
 656                 goto err1;
 657
 658         r = fence_wait_timeout(f, false, timeout);
 659         if (r == 0) {
 660                 DRM_ERROR("amdgpu: IB test timed out\n");
 661                 r = -ETIMEDOUT;
 662                 goto err1;
 663         } else if (r < 0) {
 664                 DRM_ERROR("amdgpu: fence wait failed (%ld).\n", r);
 665                 goto err1;
 666         }
 667         tmp = le32_to_cpu(adev->wb.wb[index]);
 668         if (tmp == 0xDEADBEEF) {
 669                 DRM_INFO("ib test on ring %d succeeded\n", ring->idx);
 670                 r = 0;
 671         } else {
 672                 DRM_ERROR("amdgpu: ib test failed (0x%08X)\n", tmp);
 673                 r = -EINVAL;
 674         }
 675
 676 err1:
 677         amdgpu_ib_free(adev, &ib, NULL);
 678         fence_put(f);
 679 err0:
 680         amdgpu_wb_free(adev, index);
 681         return r;
 682 }
 683
 684 /**
 685  * cik_sdma_vm_copy_pages - update PTEs by copying them from the GART
 686  *
 687  * @ib: indirect buffer to fill with commands
 688  * @pe: addr of the page entry
 689  * @src: src addr to copy from
 690  * @count: number of page entries to update
 691  *
 692  * Update PTEs by copying them from the GART using sDMA (CIK).
 693  */
 694 static void cik_sdma_vm_copy_pte(struct amdgpu_ib *ib,
 695                                  uint64_t pe, uint64_t src,
 696                                  unsigned count)
 697 {
 698         while (count) {
 699                 unsigned bytes = count * 8;
 700                 if (bytes > 0x1FFFF8)
 701                         bytes = 0x1FFFF8;
 702
 703                 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY,
 704                         SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 705                 ib->ptr[ib->length_dw++] = bytes;
 706                 ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */
 707                 ib->ptr[ib->length_dw++] = lower_32_bits(src);
 708                 ib->ptr[ib->length_dw++] = upper_32_bits(src);
 709                 ib->ptr[ib->length_dw++] = lower_32_bits(pe);
 710                 ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 711
 712                 pe += bytes;
 713                 src += bytes;
 714                 count -= bytes / 8;
 715         }
 716 }
 717
 718 /**
 719  * cik_sdma_vm_write_pages - update PTEs by writing them manually
 720  *
 721  * @ib: indirect buffer to fill with commands
 722  * @pe: addr of the page entry
 723  * @addr: dst addr to write into pe
 724  * @count: number of page entries to update
 725  * @incr: increase next addr by incr bytes
 726  * @flags: access flags
 727  *
 728  * Update PTEs by writing them manually using sDMA (CIK).
 729  */
 730 static void cik_sdma_vm_write_pte(struct amdgpu_ib *ib,
 731                                   const dma_addr_t *pages_addr, uint64_t pe,
 732                                   uint64_t addr, unsigned count,
 733                                   uint32_t incr, uint32_t flags)
 734 {
 735         uint64_t value;
 736         unsigned ndw;
 737
 738         while (count) {
 739                 ndw = count * 2;
 740                 if (ndw > 0xFFFFE)
 741                         ndw = 0xFFFFE;
 742
 743                 /* for non-physically contiguous pages (system) */
 744                 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_WRITE,
 745                         SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 746                 ib->ptr[ib->length_dw++] = pe;
 747                 ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 748                 ib->ptr[ib->length_dw++] = ndw;
 749                 for (; ndw > 0; ndw -= 2, --count, pe += 8) {
 750                         value = amdgpu_vm_map_gart(pages_addr, addr);
 751                         addr += incr;
 752                         value |= flags;
 753                         ib->ptr[ib->length_dw++] = value;
 754                         ib->ptr[ib->length_dw++] = upper_32_bits(value);
 755                 }
 756         }
 757 }
 758
 759 /**
 760  * cik_sdma_vm_set_pages - update the page tables using sDMA
 761  *
 762  * @ib: indirect buffer to fill with commands
 763  * @pe: addr of the page entry
 764  * @addr: dst addr to write into pe
 765  * @count: number of page entries to update
 766  * @incr: increase next addr by incr bytes
 767  * @flags: access flags
 768  *
 769  * Update the page tables using sDMA (CIK).
 770  */
 771 static void cik_sdma_vm_set_pte_pde(struct amdgpu_ib *ib,
 772                                     uint64_t pe,
 773                                     uint64_t addr, unsigned count,
 774                                     uint32_t incr, uint32_t flags)
 775 {
 776         uint64_t value;
 777         unsigned ndw;
 778
 779         while (count) {
 780                 ndw = count;
 781                 if (ndw > 0x7FFFF)
 782                         ndw = 0x7FFFF;
 783
 784                 if (flags & AMDGPU_PTE_VALID)
 785                         value = addr;
 786                 else
 787                         value = 0;
 788
 789                 /* for physically contiguous pages (vram) */
 790                 ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_GENERATE_PTE_PDE, 0, 0);
 791                 ib->ptr[ib->length_dw++] = pe; /* dst addr */
 792                 ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 793                 ib->ptr[ib->length_dw++] = flags; /* mask */
 794                 ib->ptr[ib->length_dw++] = 0;
 795                 ib->ptr[ib->length_dw++] = value; /* value */
 796                 ib->ptr[ib->length_dw++] = upper_32_bits(value);
 797                 ib->ptr[ib->length_dw++] = incr; /* increment size */
 798                 ib->ptr[ib->length_dw++] = 0;
 799                 ib->ptr[ib->length_dw++] = ndw; /* number of entries */
 800
 801                 pe += ndw * 8;
 802                 addr += ndw * incr;
 803                 count -= ndw;
 804         }
 805 }
 806
 807 /**
 808  * cik_sdma_vm_pad_ib - pad the IB to the required number of dw
 809  *
 810  * @ib: indirect buffer to fill with padding
 811  *
 812  */
 813 static void cik_sdma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib)
 814 {
 815         struct amdgpu_sdma_instance *sdma = amdgpu_get_sdma_instance(ring);
 816         u32 pad_count;
 817         int i;
 818
 819         pad_count = (8 - (ib->length_dw & 0x7)) % 8;
 820         for (i = 0; i < pad_count; i++)
 821                 if (sdma && sdma->burst_nop && (i == 0))
 822                         ib->ptr[ib->length_dw++] =
 823                                         SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0) |
 824                                         SDMA_NOP_COUNT(pad_count - 1);
 825                 else
 826                         ib->ptr[ib->length_dw++] =
 827                                         SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0);
 828 }
 829
 830 /**
 831  * cik_sdma_ring_emit_pipeline_sync - sync the pipeline
 832  *
 833  * @ring: amdgpu_ring pointer
 834  *
 835  * Make sure all previous operations are completed (CIK).
 836  */
 837 static void cik_sdma_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
 838 {
 839         uint32_t seq = ring->fence_drv.sync_seq;
 840         uint64_t addr = ring->fence_drv.gpu_addr;
 841
 842         /* wait for idle */
 843         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0,
 844                                             SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 845                                             SDMA_POLL_REG_MEM_EXTRA_FUNC(3) | /* equal */
 846                                             SDMA_POLL_REG_MEM_EXTRA_M));
 847         amdgpu_ring_write(ring, addr & 0xfffffffc);
 848         amdgpu_ring_write(ring, upper_32_bits(addr) & 0xffffffff);
 849         amdgpu_ring_write(ring, seq); /* reference */
 850         amdgpu_ring_write(ring, 0xfffffff); /* mask */
 851         amdgpu_ring_write(ring, (0xfff << 16) | 4); /* retry count, poll interval */
 852 }
 853
 854 /**
 855  * cik_sdma_ring_emit_vm_flush - cik vm flush using sDMA
 856  *
 857  * @ring: amdgpu_ring pointer
 858  * @vm: amdgpu_vm pointer
 859  *
 860  * Update the page table base and flush the VM TLB
 861  * using sDMA (CIK).
 862  */
 863 static void cik_sdma_ring_emit_vm_flush(struct amdgpu_ring *ring,
 864                                         unsigned vm_id, uint64_t pd_addr)
 865 {
 866         u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 867                           SDMA_POLL_REG_MEM_EXTRA_FUNC(0)); /* always */
 868
 869         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 870         if (vm_id < 8) {
 871                 amdgpu_ring_write(ring, (mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR + vm_id));
 872         } else {
 873                 amdgpu_ring_write(ring, (mmVM_CONTEXT8_PAGE_TABLE_BASE_ADDR + vm_id - 8));
 874         }
 875         amdgpu_ring_write(ring, pd_addr >> 12);
 876
 877         /* flush TLB */
 878         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 879         amdgpu_ring_write(ring, mmVM_INVALIDATE_REQUEST);
 880         amdgpu_ring_write(ring, 1 << vm_id);
 881
 882         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
 883         amdgpu_ring_write(ring, mmVM_INVALIDATE_REQUEST << 2);
 884         amdgpu_ring_write(ring, 0);
 885         amdgpu_ring_write(ring, 0); /* reference */
 886         amdgpu_ring_write(ring, 0); /* mask */
 887         amdgpu_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
 888 }
 889
 890 static void cik_enable_sdma_mgcg(struct amdgpu_device *adev,
 891                                  bool enable)
 892 {
 893         u32 orig, data;
 894
 895         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) {
 896                 WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, 0x00000100);
 897                 WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, 0x00000100);
 898         } else {
 899                 orig = data = RREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET);
 900                 data |= 0xff000000;
 901                 if (data != orig)
 902                         WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, data);
 903
 904                 orig = data = RREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET);
 905                 data |= 0xff000000;
 906                 if (data != orig)
 907                         WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, data);
 908         }
 909 }
 910
 911 static void cik_enable_sdma_mgls(struct amdgpu_device *adev,
 912                                  bool enable)
 913 {
 914         u32 orig, data;
 915
 916         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_LS)) {
 917                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET);
 918                 data |= 0x100;
 919                 if (orig != data)
 920                         WREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET, data);
 921
 922                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET);
 923                 data |= 0x100;
 924                 if (orig != data)
 925                         WREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET, data);
 926         } else {
 927                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET);
 928                 data &= ~0x100;
 929                 if (orig != data)
 930                         WREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET, data);
 931
 932                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET);
 933                 data &= ~0x100;
 934                 if (orig != data)
 935                         WREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET, data);
 936         }
 937 }
 938
 939 static int cik_sdma_early_init(void *handle)
 940 {
 941         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 942
 943         adev->sdma.num_instances = SDMA_MAX_INSTANCE;
 944
 945         cik_sdma_set_ring_funcs(adev);
 946         cik_sdma_set_irq_funcs(adev);
 947         cik_sdma_set_buffer_funcs(adev);
 948         cik_sdma_set_vm_pte_funcs(adev);
 949
 950         return 0;
 951 }
 952
 953 static int cik_sdma_sw_init(void *handle)
 954 {
 955         struct amdgpu_ring *ring;
 956         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 957         int r, i;
 958
 959         r = cik_sdma_init_microcode(adev);
 960         if (r) {
 961                 DRM_ERROR("Failed to load sdma firmware!\n");
 962                 return r;
 963         }
 964
 965         /* SDMA trap event */
 966         r = amdgpu_irq_add_id(adev, 224, &adev->sdma.trap_irq);
 967         if (r)
 968                 return r;
 969
 970         /* SDMA Privileged inst */
 971         r = amdgpu_irq_add_id(adev, 241, &adev->sdma.illegal_inst_irq);
 972         if (r)
 973                 return r;
 974
 975         /* SDMA Privileged inst */
 976         r = amdgpu_irq_add_id(adev, 247, &adev->sdma.illegal_inst_irq);
 977         if (r)
 978                 return r;
 979
 980         for (i = 0; i < adev->sdma.num_instances; i++) {
 981                 ring = &adev->sdma.instance[i].ring;
 982                 ring->ring_obj = NULL;
 983                 sprintf(ring->name, "sdma%d", i);
 984                 r = amdgpu_ring_init(adev, ring, 1024,
 985                                      SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0), 0xf,
 986                                      &adev->sdma.trap_irq,
 987                                      (i == 0) ?
 988                                      AMDGPU_SDMA_IRQ_TRAP0 : AMDGPU_SDMA_IRQ_TRAP1,
 989                                      AMDGPU_RING_TYPE_SDMA);
 990                 if (r)
 991                         return r;
 992         }
 993
 994         return r;
 995 }
 996
 997 static int cik_sdma_sw_fini(void *handle)
 998 {
 999         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1000         int i;
1001
1002         for (i = 0; i < adev->sdma.num_instances; i++)
1003                 amdgpu_ring_fini(&adev->sdma.instance[i].ring);
1004
1005         cik_sdma_free_microcode(adev);
1006         return 0;
1007 }
1008
1009 static int cik_sdma_hw_init(void *handle)
1010 {
1011         int r;
1012         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1013
1014         r = cik_sdma_start(adev);
1015         if (r)
1016                 return r;
1017
1018         return r;
1019 }
1020
1021 static int cik_sdma_hw_fini(void *handle)
1022 {
1023         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1024
1025         cik_sdma_enable(adev, false);
1026
1027         return 0;
1028 }
1029
1030 static int cik_sdma_suspend(void *handle)
1031 {
1032         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1033
1034         return cik_sdma_hw_fini(adev);
1035 }
1036
1037 static int cik_sdma_resume(void *handle)
1038 {
1039         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1040
1041         cik_sdma_soft_reset(handle);
1042
1043         return cik_sdma_hw_init(adev);
1044 }
1045
1046 static bool cik_sdma_is_idle(void *handle)
1047 {
1048         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1049         u32 tmp = RREG32(mmSRBM_STATUS2);
1050
1051         if (tmp & (SRBM_STATUS2__SDMA_BUSY_MASK |
1052                                 SRBM_STATUS2__SDMA1_BUSY_MASK))
1053             return false;
1054
1055         return true;
1056 }
1057
1058 static int cik_sdma_wait_for_idle(void *handle)
1059 {
1060         unsigned i;
1061         u32 tmp;
1062         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1063
1064         for (i = 0; i < adev->usec_timeout; i++) {
1065                 tmp = RREG32(mmSRBM_STATUS2) & (SRBM_STATUS2__SDMA_BUSY_MASK |
1066                                 SRBM_STATUS2__SDMA1_BUSY_MASK);
1067
1068                 if (!tmp)
1069                         return 0;
1070                 udelay(1);
1071         }
1072         return -ETIMEDOUT;
1073 }
1074
1075 static int cik_sdma_soft_reset(void *handle)
1076 {
1077         u32 srbm_soft_reset = 0;
1078         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1079         u32 tmp = RREG32(mmSRBM_STATUS2);
1080
1081         if (tmp & SRBM_STATUS2__SDMA_BUSY_MASK) {
1082                 /* sdma0 */
1083                 tmp = RREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET);
1084                 tmp |= SDMA0_F32_CNTL__HALT_MASK;
1085                 WREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET, tmp);
1086                 srbm_soft_reset |= SRBM_SOFT_RESET__SOFT_RESET_SDMA_MASK;
1087         }
1088         if (tmp & SRBM_STATUS2__SDMA1_BUSY_MASK) {
1089                 /* sdma1 */
1090                 tmp = RREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET);
1091                 tmp |= SDMA0_F32_CNTL__HALT_MASK;
1092                 WREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET, tmp);
1093                 srbm_soft_reset |= SRBM_SOFT_RESET__SOFT_RESET_SDMA1_MASK;
1094         }
1095
1096         if (srbm_soft_reset) {
1097                 tmp = RREG32(mmSRBM_SOFT_RESET);
1098                 tmp |= srbm_soft_reset;
1099                 dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp);
1100                 WREG32(mmSRBM_SOFT_RESET, tmp);
1101                 tmp = RREG32(mmSRBM_SOFT_RESET);
1102
1103                 udelay(50);
1104
1105                 tmp &= ~srbm_soft_reset;
1106                 WREG32(mmSRBM_SOFT_RESET, tmp);
1107                 tmp = RREG32(mmSRBM_SOFT_RESET);
1108
1109                 /* Wait a little for things to settle down */
1110                 udelay(50);
1111         }
1112
1113         return 0;
1114 }
1115
1116 static int cik_sdma_set_trap_irq_state(struct amdgpu_device *adev,
1117                                        struct amdgpu_irq_src *src,
1118                                        unsigned type,
1119                                        enum amdgpu_interrupt_state state)
1120 {
1121         u32 sdma_cntl;
1122
1123         switch (type) {
1124         case AMDGPU_SDMA_IRQ_TRAP0:
1125                 switch (state) {
1126                 case AMDGPU_IRQ_STATE_DISABLE:
1127                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET);
1128                         sdma_cntl &= ~SDMA0_CNTL__TRAP_ENABLE_MASK;
1129                         WREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET, sdma_cntl);
1130                         break;
1131                 case AMDGPU_IRQ_STATE_ENABLE:
1132                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET);
1133                         sdma_cntl |= SDMA0_CNTL__TRAP_ENABLE_MASK;
1134                         WREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET, sdma_cntl);
1135                         break;
1136                 default:
1137                         break;
1138                 }
1139                 break;
1140         case AMDGPU_SDMA_IRQ_TRAP1:
1141                 switch (state) {
1142                 case AMDGPU_IRQ_STATE_DISABLE:
1143                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET);
1144                         sdma_cntl &= ~SDMA0_CNTL__TRAP_ENABLE_MASK;
1145                         WREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET, sdma_cntl);
1146                         break;
1147                 case AMDGPU_IRQ_STATE_ENABLE:
1148                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET);
1149                         sdma_cntl |= SDMA0_CNTL__TRAP_ENABLE_MASK;
1150                         WREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET, sdma_cntl);
1151                         break;
1152                 default:
1153                         break;
1154                 }
1155                 break;
1156         default:
1157                 break;
1158         }
1159         return 0;
1160 }
1161
1162 static int cik_sdma_process_trap_irq(struct amdgpu_device *adev,
1163                                      struct amdgpu_irq_src *source,
1164                                      struct amdgpu_iv_entry *entry)
1165 {
1166         u8 instance_id, queue_id;
1167
1168         instance_id = (entry->ring_id & 0x3) >> 0;
1169         queue_id = (entry->ring_id & 0xc) >> 2;
1170         DRM_DEBUG("IH: SDMA trap\n");
1171         switch (instance_id) {
1172         case 0:
1173                 switch (queue_id) {
1174                 case 0:
1175                         amdgpu_fence_process(&adev->sdma.instance[0].ring);
1176                         break;
1177                 case 1:
1178                         /* XXX compute */
1179                         break;
1180                 case 2:
1181                         /* XXX compute */
1182                         break;
1183                 }
1184                 break;
1185         case 1:
1186                 switch (queue_id) {
1187                 case 0:
1188                         amdgpu_fence_process(&adev->sdma.instance[1].ring);
1189                         break;
1190                 case 1:
1191                         /* XXX compute */
1192                         break;
1193                 case 2:
1194                         /* XXX compute */
1195                         break;
1196                 }
1197                 break;
1198         }
1199
1200         return 0;
1201 }
1202
1203 static int cik_sdma_process_illegal_inst_irq(struct amdgpu_device *adev,
1204                                              struct amdgpu_irq_src *source,
1205                                              struct amdgpu_iv_entry *entry)
1206 {
1207         DRM_ERROR("Illegal instruction in SDMA command stream\n");
1208         schedule_work(&adev->reset_work);
1209         return 0;
1210 }
1211
1212 static int cik_sdma_set_clockgating_state(void *handle,
1213                                           enum amd_clockgating_state state)
1214 {
1215         bool gate = false;
1216         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1217
1218         if (state == AMD_CG_STATE_GATE)
1219                 gate = true;
1220
1221         cik_enable_sdma_mgcg(adev, gate);
1222         cik_enable_sdma_mgls(adev, gate);
1223
1224         return 0;
1225 }
1226
1227 static int cik_sdma_set_powergating_state(void *handle,
1228                                           enum amd_powergating_state state)
1229 {
1230         return 0;
1231 }
1232
1233 const struct amd_ip_funcs cik_sdma_ip_funcs = {
1234         .name = "cik_sdma",
1235         .early_init = cik_sdma_early_init,
1236         .late_init = NULL,
1237         .sw_init = cik_sdma_sw_init,
1238         .sw_fini = cik_sdma_sw_fini,
1239         .hw_init = cik_sdma_hw_init,
1240         .hw_fini = cik_sdma_hw_fini,
1241         .suspend = cik_sdma_suspend,
1242         .resume = cik_sdma_resume,
1243         .is_idle = cik_sdma_is_idle,
1244         .wait_for_idle = cik_sdma_wait_for_idle,
1245         .soft_reset = cik_sdma_soft_reset,
1246         .set_clockgating_state = cik_sdma_set_clockgating_state,
1247         .set_powergating_state = cik_sdma_set_powergating_state,
1248 };
1249
1250 static const struct amdgpu_ring_funcs cik_sdma_ring_funcs = {
1251         .get_rptr = cik_sdma_ring_get_rptr,
1252         .get_wptr = cik_sdma_ring_get_wptr,
1253         .set_wptr = cik_sdma_ring_set_wptr,
1254         .parse_cs = NULL,
1255         .emit_ib = cik_sdma_ring_emit_ib,
1256         .emit_fence = cik_sdma_ring_emit_fence,
1257         .emit_pipeline_sync = cik_sdma_ring_emit_pipeline_sync,
1258         .emit_vm_flush = cik_sdma_ring_emit_vm_flush,
1259         .emit_hdp_flush = cik_sdma_ring_emit_hdp_flush,
1260         .emit_hdp_invalidate = cik_sdma_ring_emit_hdp_invalidate,
1261         .test_ring = cik_sdma_ring_test_ring,
1262         .test_ib = cik_sdma_ring_test_ib,
1263         .insert_nop = cik_sdma_ring_insert_nop,
1264         .pad_ib = cik_sdma_ring_pad_ib,
1265 };
1266
1267 static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev)
1268 {
1269         int i;
1270
1271         for (i = 0; i < adev->sdma.num_instances; i++)
1272                 adev->sdma.instance[i].ring.funcs = &cik_sdma_ring_funcs;
1273 }
1274
1275 static const struct amdgpu_irq_src_funcs cik_sdma_trap_irq_funcs = {
1276         .set = cik_sdma_set_trap_irq_state,
1277         .process = cik_sdma_process_trap_irq,
1278 };
1279
1280 static const struct amdgpu_irq_src_funcs cik_sdma_illegal_inst_irq_funcs = {
1281         .process = cik_sdma_process_illegal_inst_irq,
1282 };
1283
1284 static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev)
1285 {
1286         adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST;
1287         adev->sdma.trap_irq.funcs = &cik_sdma_trap_irq_funcs;
1288         adev->sdma.illegal_inst_irq.funcs = &cik_sdma_illegal_inst_irq_funcs;
1289 }
1290
1291 /**
1292  * cik_sdma_emit_copy_buffer - copy buffer using the sDMA engine
1293  *
1294  * @ring: amdgpu_ring structure holding ring information
1295  * @src_offset: src GPU address
1296  * @dst_offset: dst GPU address
1297  * @byte_count: number of bytes to xfer
1298  *
1299  * Copy GPU buffers using the DMA engine (CIK).
1300  * Used by the amdgpu ttm implementation to move pages if
1301  * registered as the asic copy callback.
1302  */
1303 static void cik_sdma_emit_copy_buffer(struct amdgpu_ib *ib,
1304                                       uint64_t src_offset,
1305                                       uint64_t dst_offset,
1306                                       uint32_t byte_count)
1307 {
1308         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY, SDMA_COPY_SUB_OPCODE_LINEAR, 0);
1309         ib->ptr[ib->length_dw++] = byte_count;
1310         ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */
1311         ib->ptr[ib->length_dw++] = lower_32_bits(src_offset);
1312         ib->ptr[ib->length_dw++] = upper_32_bits(src_offset);
1313         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
1314         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset);
1315 }
1316
1317 /**
1318  * cik_sdma_emit_fill_buffer - fill buffer using the sDMA engine
1319  *
1320  * @ring: amdgpu_ring structure holding ring information
1321  * @src_data: value to write to buffer
1322  * @dst_offset: dst GPU address
1323  * @byte_count: number of bytes to xfer
1324  *
1325  * Fill GPU buffers using the DMA engine (CIK).
1326  */
1327 static void cik_sdma_emit_fill_buffer(struct amdgpu_ib *ib,
1328                                       uint32_t src_data,
1329                                       uint64_t dst_offset,
1330                                       uint32_t byte_count)
1331 {
1332         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_CONSTANT_FILL, 0, 0);
1333         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
1334         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset);
1335         ib->ptr[ib->length_dw++] = src_data;
1336         ib->ptr[ib->length_dw++] = byte_count;
1337 }
1338
1339 static const struct amdgpu_buffer_funcs cik_sdma_buffer_funcs = {
1340         .copy_max_bytes = 0x1fffff,
1341         .copy_num_dw = 7,
1342         .emit_copy_buffer = cik_sdma_emit_copy_buffer,
1343
1344         .fill_max_bytes = 0x1fffff,
1345         .fill_num_dw = 5,
1346         .emit_fill_buffer = cik_sdma_emit_fill_buffer,
1347 };
1348
1349 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev)
1350 {
1351         if (adev->mman.buffer_funcs == NULL) {
1352                 adev->mman.buffer_funcs = &cik_sdma_buffer_funcs;
1353                 adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
1354         }
1355 }
1356
1357 static const struct amdgpu_vm_pte_funcs cik_sdma_vm_pte_funcs = {
1358         .copy_pte = cik_sdma_vm_copy_pte,
1359         .write_pte = cik_sdma_vm_write_pte,
1360         .set_pte_pde = cik_sdma_vm_set_pte_pde,
1361 };
1362
1363 static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev)
1364 {
1365         unsigned i;
1366
1367         if (adev->vm_manager.vm_pte_funcs == NULL) {
1368                 adev->vm_manager.vm_pte_funcs = &cik_sdma_vm_pte_funcs;
1369                 for (i = 0; i < adev->sdma.num_instances; i++)
1370                         adev->vm_manager.vm_pte_rings[i] =
1371                                 &adev->sdma.instance[i].ring;
1372
1373                 adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
1374         }
1375 }