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("amdgpu/bonaire_sdma.bin");
  58 MODULE_FIRMWARE("amdgpu/bonaire_sdma1.bin");
  59 MODULE_FIRMWARE("amdgpu/hawaii_sdma.bin");
  60 MODULE_FIRMWARE("amdgpu/hawaii_sdma1.bin");
  61 MODULE_FIRMWARE("amdgpu/kaveri_sdma.bin");
  62 MODULE_FIRMWARE("amdgpu/kaveri_sdma1.bin");
  63 MODULE_FIRMWARE("amdgpu/kabini_sdma.bin");
  64 MODULE_FIRMWARE("amdgpu/kabini_sdma1.bin");
  65 MODULE_FIRMWARE("amdgpu/mullins_sdma.bin");
  66 MODULE_FIRMWARE("amdgpu/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), "amdgpu/%s_sdma.bin", chip_name);
 136                 else
 137                         snprintf(fw_name, sizeof(fw_name), "amdgpu/%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                 pr_err("cik_sdma: Failed to load firmware \"%s\"\n", fw_name);
 146                 for (i = 0; i < adev->sdma.num_instances; i++) {
 147                         release_firmware(adev->sdma.instance[i].fw);
 148                         adev->sdma.instance[i].fw = NULL;
 149                 }
 150         }
 151         return err;
 152 }
 153
 154 /**
 155  * cik_sdma_ring_get_rptr - get the current read pointer
 156  *
 157  * @ring: amdgpu ring pointer
 158  *
 159  * Get the current rptr from the hardware (CIK+).
 160  */
 161 static uint64_t cik_sdma_ring_get_rptr(struct amdgpu_ring *ring)
 162 {
 163         u32 rptr;
 164
 165         rptr = ring->adev->wb.wb[ring->rptr_offs];
 166
 167         return (rptr & 0x3fffc) >> 2;
 168 }
 169
 170 /**
 171  * cik_sdma_ring_get_wptr - get the current write pointer
 172  *
 173  * @ring: amdgpu ring pointer
 174  *
 175  * Get the current wptr from the hardware (CIK+).
 176  */
 177 static uint64_t cik_sdma_ring_get_wptr(struct amdgpu_ring *ring)
 178 {
 179         struct amdgpu_device *adev = ring->adev;
 180
 181         return (RREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[ring->me]) & 0x3fffc) >> 2;
 182 }
 183
 184 /**
 185  * cik_sdma_ring_set_wptr - commit the write pointer
 186  *
 187  * @ring: amdgpu ring pointer
 188  *
 189  * Write the wptr back to the hardware (CIK+).
 190  */
 191 static void cik_sdma_ring_set_wptr(struct amdgpu_ring *ring)
 192 {
 193         struct amdgpu_device *adev = ring->adev;
 194
 195         WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[ring->me],
 196                         (lower_32_bits(ring->wptr) << 2) & 0x3fffc);
 197 }
 198
 199 static void cik_sdma_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
 200 {
 201         struct amdgpu_sdma_instance *sdma = amdgpu_sdma_get_instance_from_ring(ring);
 202         int i;
 203
 204         for (i = 0; i < count; i++)
 205                 if (sdma && sdma->burst_nop && (i == 0))
 206                         amdgpu_ring_write(ring, ring->funcs->nop |
 207                                           SDMA_NOP_COUNT(count - 1));
 208                 else
 209                         amdgpu_ring_write(ring, ring->funcs->nop);
 210 }
 211
 212 /**
 213  * cik_sdma_ring_emit_ib - Schedule an IB on the DMA engine
 214  *
 215  * @ring: amdgpu ring pointer
 216  * @ib: IB object to schedule
 217  *
 218  * Schedule an IB in the DMA ring (CIK).
 219  */
 220 static void cik_sdma_ring_emit_ib(struct amdgpu_ring *ring,
 221                                   struct amdgpu_job *job,
 222                                   struct amdgpu_ib *ib,
 223                                   uint32_t flags)
 224 {
 225         unsigned vmid = AMDGPU_JOB_GET_VMID(job);
 226         u32 extra_bits = vmid & 0xf;
 227
 228         /* IB packet must end on a 8 DW boundary */
 229         cik_sdma_ring_insert_nop(ring, (12 - (lower_32_bits(ring->wptr) & 7)) % 8);
 230
 231         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_INDIRECT_BUFFER, 0, extra_bits));
 232         amdgpu_ring_write(ring, ib->gpu_addr & 0xffffffe0); /* base must be 32 byte aligned */
 233         amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr) & 0xffffffff);
 234         amdgpu_ring_write(ring, ib->length_dw);
 235
 236 }
 237
 238 /**
 239  * cik_sdma_ring_emit_hdp_flush - emit an hdp flush on the DMA ring
 240  *
 241  * @ring: amdgpu ring pointer
 242  *
 243  * Emit an hdp flush packet on the requested DMA ring.
 244  */
 245 static void cik_sdma_ring_emit_hdp_flush(struct amdgpu_ring *ring)
 246 {
 247         u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) |
 248                           SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */
 249         u32 ref_and_mask;
 250
 251         if (ring->me == 0)
 252                 ref_and_mask = GPU_HDP_FLUSH_DONE__SDMA0_MASK;
 253         else
 254                 ref_and_mask = GPU_HDP_FLUSH_DONE__SDMA1_MASK;
 255
 256         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
 257         amdgpu_ring_write(ring, mmGPU_HDP_FLUSH_DONE << 2);
 258         amdgpu_ring_write(ring, mmGPU_HDP_FLUSH_REQ << 2);
 259         amdgpu_ring_write(ring, ref_and_mask); /* reference */
 260         amdgpu_ring_write(ring, ref_and_mask); /* mask */
 261         amdgpu_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
 262 }
 263
 264 /**
 265  * cik_sdma_ring_emit_fence - emit a fence on the DMA ring
 266  *
 267  * @ring: amdgpu ring pointer
 268  * @fence: amdgpu fence object
 269  *
 270  * Add a DMA fence packet to the ring to write
 271  * the fence seq number and DMA trap packet to generate
 272  * an interrupt if needed (CIK).
 273  */
 274 static void cik_sdma_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq,
 275                                      unsigned flags)
 276 {
 277         bool write64bit = flags & AMDGPU_FENCE_FLAG_64BIT;
 278         /* write the fence */
 279         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0));
 280         amdgpu_ring_write(ring, lower_32_bits(addr));
 281         amdgpu_ring_write(ring, upper_32_bits(addr));
 282         amdgpu_ring_write(ring, lower_32_bits(seq));
 283
 284         /* optionally write high bits as well */
 285         if (write64bit) {
 286                 addr += 4;
 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, upper_32_bits(seq));
 291         }
 292
 293         /* generate an interrupt */
 294         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0));
 295 }
 296
 297 /**
 298  * cik_sdma_gfx_stop - stop the gfx async dma engines
 299  *
 300  * @adev: amdgpu_device pointer
 301  *
 302  * Stop the gfx async dma ring buffers (CIK).
 303  */
 304 static void cik_sdma_gfx_stop(struct amdgpu_device *adev)
 305 {
 306         struct amdgpu_ring *sdma0 = &adev->sdma.instance[0].ring;
 307         struct amdgpu_ring *sdma1 = &adev->sdma.instance[1].ring;
 308         u32 rb_cntl;
 309         int i;
 310
 311         if ((adev->mman.buffer_funcs_ring == sdma0) ||
 312             (adev->mman.buffer_funcs_ring == sdma1))
 313                         amdgpu_ttm_set_buffer_funcs_status(adev, false);
 314
 315         for (i = 0; i < adev->sdma.num_instances; i++) {
 316                 rb_cntl = RREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i]);
 317                 rb_cntl &= ~SDMA0_GFX_RB_CNTL__RB_ENABLE_MASK;
 318                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i], rb_cntl);
 319                 WREG32(mmSDMA0_GFX_IB_CNTL + sdma_offsets[i], 0);
 320         }
 321         sdma0->sched.ready = false;
 322         sdma1->sched.ready = false;
 323 }
 324
 325 /**
 326  * cik_sdma_rlc_stop - stop the compute async dma engines
 327  *
 328  * @adev: amdgpu_device pointer
 329  *
 330  * Stop the compute async dma queues (CIK).
 331  */
 332 static void cik_sdma_rlc_stop(struct amdgpu_device *adev)
 333 {
 334         /* XXX todo */
 335 }
 336
 337 /**
 338  * cik_ctx_switch_enable - stop the async dma engines context switch
 339  *
 340  * @adev: amdgpu_device pointer
 341  * @enable: enable/disable the DMA MEs context switch.
 342  *
 343  * Halt or unhalt the async dma engines context switch (VI).
 344  */
 345 static void cik_ctx_switch_enable(struct amdgpu_device *adev, bool enable)
 346 {
 347         u32 f32_cntl, phase_quantum = 0;
 348         int i;
 349
 350         if (amdgpu_sdma_phase_quantum) {
 351                 unsigned value = amdgpu_sdma_phase_quantum;
 352                 unsigned unit = 0;
 353
 354                 while (value > (SDMA0_PHASE0_QUANTUM__VALUE_MASK >>
 355                                 SDMA0_PHASE0_QUANTUM__VALUE__SHIFT)) {
 356                         value = (value + 1) >> 1;
 357                         unit++;
 358                 }
 359                 if (unit > (SDMA0_PHASE0_QUANTUM__UNIT_MASK >>
 360                             SDMA0_PHASE0_QUANTUM__UNIT__SHIFT)) {
 361                         value = (SDMA0_PHASE0_QUANTUM__VALUE_MASK >>
 362                                  SDMA0_PHASE0_QUANTUM__VALUE__SHIFT);
 363                         unit = (SDMA0_PHASE0_QUANTUM__UNIT_MASK >>
 364                                 SDMA0_PHASE0_QUANTUM__UNIT__SHIFT);
 365                         WARN_ONCE(1,
 366                         "clamping sdma_phase_quantum to %uK clock cycles\n",
 367                                   value << unit);
 368                 }
 369                 phase_quantum =
 370                         value << SDMA0_PHASE0_QUANTUM__VALUE__SHIFT |
 371                         unit  << SDMA0_PHASE0_QUANTUM__UNIT__SHIFT;
 372         }
 373
 374         for (i = 0; i < adev->sdma.num_instances; i++) {
 375                 f32_cntl = RREG32(mmSDMA0_CNTL + sdma_offsets[i]);
 376                 if (enable) {
 377                         f32_cntl = REG_SET_FIELD(f32_cntl, SDMA0_CNTL,
 378                                         AUTO_CTXSW_ENABLE, 1);
 379                         if (amdgpu_sdma_phase_quantum) {
 380                                 WREG32(mmSDMA0_PHASE0_QUANTUM + sdma_offsets[i],
 381                                        phase_quantum);
 382                                 WREG32(mmSDMA0_PHASE1_QUANTUM + sdma_offsets[i],
 383                                        phase_quantum);
 384                         }
 385                 } else {
 386                         f32_cntl = REG_SET_FIELD(f32_cntl, SDMA0_CNTL,
 387                                         AUTO_CTXSW_ENABLE, 0);
 388                 }
 389
 390                 WREG32(mmSDMA0_CNTL + sdma_offsets[i], f32_cntl);
 391         }
 392 }
 393
 394 /**
 395  * cik_sdma_enable - stop the async dma engines
 396  *
 397  * @adev: amdgpu_device pointer
 398  * @enable: enable/disable the DMA MEs.
 399  *
 400  * Halt or unhalt the async dma engines (CIK).
 401  */
 402 static void cik_sdma_enable(struct amdgpu_device *adev, bool enable)
 403 {
 404         u32 me_cntl;
 405         int i;
 406
 407         if (!enable) {
 408                 cik_sdma_gfx_stop(adev);
 409                 cik_sdma_rlc_stop(adev);
 410         }
 411
 412         for (i = 0; i < adev->sdma.num_instances; i++) {
 413                 me_cntl = RREG32(mmSDMA0_F32_CNTL + sdma_offsets[i]);
 414                 if (enable)
 415                         me_cntl &= ~SDMA0_F32_CNTL__HALT_MASK;
 416                 else
 417                         me_cntl |= SDMA0_F32_CNTL__HALT_MASK;
 418                 WREG32(mmSDMA0_F32_CNTL + sdma_offsets[i], me_cntl);
 419         }
 420 }
 421
 422 /**
 423  * cik_sdma_gfx_resume - setup and start the async dma engines
 424  *
 425  * @adev: amdgpu_device pointer
 426  *
 427  * Set up the gfx DMA ring buffers and enable them (CIK).
 428  * Returns 0 for success, error for failure.
 429  */
 430 static int cik_sdma_gfx_resume(struct amdgpu_device *adev)
 431 {
 432         struct amdgpu_ring *ring;
 433         u32 rb_cntl, ib_cntl;
 434         u32 rb_bufsz;
 435         u32 wb_offset;
 436         int i, j, r;
 437
 438         for (i = 0; i < adev->sdma.num_instances; i++) {
 439                 ring = &adev->sdma.instance[i].ring;
 440                 wb_offset = (ring->rptr_offs * 4);
 441
 442                 mutex_lock(&adev->srbm_mutex);
 443                 for (j = 0; j < 16; j++) {
 444                         cik_srbm_select(adev, 0, 0, 0, j);
 445                         /* SDMA GFX */
 446                         WREG32(mmSDMA0_GFX_VIRTUAL_ADDR + sdma_offsets[i], 0);
 447                         WREG32(mmSDMA0_GFX_APE1_CNTL + sdma_offsets[i], 0);
 448                         /* XXX SDMA RLC - todo */
 449                 }
 450                 cik_srbm_select(adev, 0, 0, 0, 0);
 451                 mutex_unlock(&adev->srbm_mutex);
 452
 453                 WREG32(mmSDMA0_TILING_CONFIG + sdma_offsets[i],
 454                        adev->gfx.config.gb_addr_config & 0x70);
 455
 456                 WREG32(mmSDMA0_SEM_INCOMPLETE_TIMER_CNTL + sdma_offsets[i], 0);
 457                 WREG32(mmSDMA0_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0);
 458
 459                 /* Set ring buffer size in dwords */
 460                 rb_bufsz = order_base_2(ring->ring_size / 4);
 461                 rb_cntl = rb_bufsz << 1;
 462 #ifdef __BIG_ENDIAN
 463                 rb_cntl |= SDMA0_GFX_RB_CNTL__RB_SWAP_ENABLE_MASK |
 464                         SDMA0_GFX_RB_CNTL__RPTR_WRITEBACK_SWAP_ENABLE_MASK;
 465 #endif
 466                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i], rb_cntl);
 467
 468                 /* Initialize the ring buffer's read and write pointers */
 469                 WREG32(mmSDMA0_GFX_RB_RPTR + sdma_offsets[i], 0);
 470                 WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[i], 0);
 471                 WREG32(mmSDMA0_GFX_IB_RPTR + sdma_offsets[i], 0);
 472                 WREG32(mmSDMA0_GFX_IB_OFFSET + sdma_offsets[i], 0);
 473
 474                 /* set the wb address whether it's enabled or not */
 475                 WREG32(mmSDMA0_GFX_RB_RPTR_ADDR_HI + sdma_offsets[i],
 476                        upper_32_bits(adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF);
 477                 WREG32(mmSDMA0_GFX_RB_RPTR_ADDR_LO + sdma_offsets[i],
 478                        ((adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC));
 479
 480                 rb_cntl |= SDMA0_GFX_RB_CNTL__RPTR_WRITEBACK_ENABLE_MASK;
 481
 482                 WREG32(mmSDMA0_GFX_RB_BASE + sdma_offsets[i], ring->gpu_addr >> 8);
 483                 WREG32(mmSDMA0_GFX_RB_BASE_HI + sdma_offsets[i], ring->gpu_addr >> 40);
 484
 485                 ring->wptr = 0;
 486                 WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[i], lower_32_bits(ring->wptr) << 2);
 487
 488                 /* enable DMA RB */
 489                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i],
 490                        rb_cntl | SDMA0_GFX_RB_CNTL__RB_ENABLE_MASK);
 491
 492                 ib_cntl = SDMA0_GFX_IB_CNTL__IB_ENABLE_MASK;
 493 #ifdef __BIG_ENDIAN
 494                 ib_cntl |= SDMA0_GFX_IB_CNTL__IB_SWAP_ENABLE_MASK;
 495 #endif
 496                 /* enable DMA IBs */
 497                 WREG32(mmSDMA0_GFX_IB_CNTL + sdma_offsets[i], ib_cntl);
 498
 499                 ring->sched.ready = true;
 500         }
 501
 502         cik_sdma_enable(adev, true);
 503
 504         for (i = 0; i < adev->sdma.num_instances; i++) {
 505                 ring = &adev->sdma.instance[i].ring;
 506                 r = amdgpu_ring_test_helper(ring);
 507                 if (r)
 508                         return r;
 509
 510                 if (adev->mman.buffer_funcs_ring == ring)
 511                         amdgpu_ttm_set_buffer_funcs_status(adev, true);
 512         }
 513
 514         return 0;
 515 }
 516
 517 /**
 518  * cik_sdma_rlc_resume - setup and start the async dma engines
 519  *
 520  * @adev: amdgpu_device pointer
 521  *
 522  * Set up the compute DMA queues and enable them (CIK).
 523  * Returns 0 for success, error for failure.
 524  */
 525 static int cik_sdma_rlc_resume(struct amdgpu_device *adev)
 526 {
 527         /* XXX todo */
 528         return 0;
 529 }
 530
 531 /**
 532  * cik_sdma_load_microcode - load the sDMA ME ucode
 533  *
 534  * @adev: amdgpu_device pointer
 535  *
 536  * Loads the sDMA0/1 ucode.
 537  * Returns 0 for success, -EINVAL if the ucode is not available.
 538  */
 539 static int cik_sdma_load_microcode(struct amdgpu_device *adev)
 540 {
 541         const struct sdma_firmware_header_v1_0 *hdr;
 542         const __le32 *fw_data;
 543         u32 fw_size;
 544         int i, j;
 545
 546         /* halt the MEs */
 547         cik_sdma_enable(adev, false);
 548
 549         for (i = 0; i < adev->sdma.num_instances; i++) {
 550                 if (!adev->sdma.instance[i].fw)
 551                         return -EINVAL;
 552                 hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma.instance[i].fw->data;
 553                 amdgpu_ucode_print_sdma_hdr(&hdr->header);
 554                 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
 555                 adev->sdma.instance[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
 556                 adev->sdma.instance[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
 557                 if (adev->sdma.instance[i].feature_version >= 20)
 558                         adev->sdma.instance[i].burst_nop = true;
 559                 fw_data = (const __le32 *)
 560                         (adev->sdma.instance[i].fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
 561                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], 0);
 562                 for (j = 0; j < fw_size; j++)
 563                         WREG32(mmSDMA0_UCODE_DATA + sdma_offsets[i], le32_to_cpup(fw_data++));
 564                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], adev->sdma.instance[i].fw_version);
 565         }
 566
 567         return 0;
 568 }
 569
 570 /**
 571  * cik_sdma_start - setup and start the async dma engines
 572  *
 573  * @adev: amdgpu_device pointer
 574  *
 575  * Set up the DMA engines and enable them (CIK).
 576  * Returns 0 for success, error for failure.
 577  */
 578 static int cik_sdma_start(struct amdgpu_device *adev)
 579 {
 580         int r;
 581
 582         r = cik_sdma_load_microcode(adev);
 583         if (r)
 584                 return r;
 585
 586         /* halt the engine before programing */
 587         cik_sdma_enable(adev, false);
 588         /* enable sdma ring preemption */
 589         cik_ctx_switch_enable(adev, true);
 590
 591         /* start the gfx rings and rlc compute queues */
 592         r = cik_sdma_gfx_resume(adev);
 593         if (r)
 594                 return r;
 595         r = cik_sdma_rlc_resume(adev);
 596         if (r)
 597                 return r;
 598
 599         return 0;
 600 }
 601
 602 /**
 603  * cik_sdma_ring_test_ring - simple async dma engine test
 604  *
 605  * @ring: amdgpu_ring structure holding ring information
 606  *
 607  * Test the DMA engine by writing using it to write an
 608  * value to memory. (CIK).
 609  * Returns 0 for success, error for failure.
 610  */
 611 static int cik_sdma_ring_test_ring(struct amdgpu_ring *ring)
 612 {
 613         struct amdgpu_device *adev = ring->adev;
 614         unsigned i;
 615         unsigned index;
 616         int r;
 617         u32 tmp;
 618         u64 gpu_addr;
 619
 620         r = amdgpu_device_wb_get(adev, &index);
 621         if (r)
 622                 return r;
 623
 624         gpu_addr = adev->wb.gpu_addr + (index * 4);
 625         tmp = 0xCAFEDEAD;
 626         adev->wb.wb[index] = cpu_to_le32(tmp);
 627
 628         r = amdgpu_ring_alloc(ring, 5);
 629         if (r)
 630                 goto error_free_wb;
 631
 632         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0));
 633         amdgpu_ring_write(ring, lower_32_bits(gpu_addr));
 634         amdgpu_ring_write(ring, upper_32_bits(gpu_addr));
 635         amdgpu_ring_write(ring, 1); /* number of DWs to follow */
 636         amdgpu_ring_write(ring, 0xDEADBEEF);
 637         amdgpu_ring_commit(ring);
 638
 639         for (i = 0; i < adev->usec_timeout; i++) {
 640                 tmp = le32_to_cpu(adev->wb.wb[index]);
 641                 if (tmp == 0xDEADBEEF)
 642                         break;
 643                 DRM_UDELAY(1);
 644         }
 645
 646         if (i >= adev->usec_timeout)
 647                 r = -ETIMEDOUT;
 648
 649 error_free_wb:
 650         amdgpu_device_wb_free(adev, index);
 651         return r;
 652 }
 653
 654 /**
 655  * cik_sdma_ring_test_ib - test an IB on the DMA engine
 656  *
 657  * @ring: amdgpu_ring structure holding ring information
 658  *
 659  * Test a simple IB in the DMA ring (CIK).
 660  * Returns 0 on success, error on failure.
 661  */
 662 static int cik_sdma_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 663 {
 664         struct amdgpu_device *adev = ring->adev;
 665         struct amdgpu_ib ib;
 666         struct dma_fence *f = NULL;
 667         unsigned index;
 668         u32 tmp = 0;
 669         u64 gpu_addr;
 670         long r;
 671
 672         r = amdgpu_device_wb_get(adev, &index);
 673         if (r)
 674                 return r;
 675
 676         gpu_addr = adev->wb.gpu_addr + (index * 4);
 677         tmp = 0xCAFEDEAD;
 678         adev->wb.wb[index] = cpu_to_le32(tmp);
 679         memset(&ib, 0, sizeof(ib));
 680         r = amdgpu_ib_get(adev, NULL, 256, &ib);
 681         if (r)
 682                 goto err0;
 683
 684         ib.ptr[0] = SDMA_PACKET(SDMA_OPCODE_WRITE,
 685                                 SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 686         ib.ptr[1] = lower_32_bits(gpu_addr);
 687         ib.ptr[2] = upper_32_bits(gpu_addr);
 688         ib.ptr[3] = 1;
 689         ib.ptr[4] = 0xDEADBEEF;
 690         ib.length_dw = 5;
 691         r = amdgpu_ib_schedule(ring, 1, &ib, NULL, &f);
 692         if (r)
 693                 goto err1;
 694
 695         r = dma_fence_wait_timeout(f, false, timeout);
 696         if (r == 0) {
 697                 r = -ETIMEDOUT;
 698                 goto err1;
 699         } else if (r < 0) {
 700                 goto err1;
 701         }
 702         tmp = le32_to_cpu(adev->wb.wb[index]);
 703         if (tmp == 0xDEADBEEF)
 704                 r = 0;
 705         else
 706                 r = -EINVAL;
 707
 708 err1:
 709         amdgpu_ib_free(adev, &ib, NULL);
 710         dma_fence_put(f);
 711 err0:
 712         amdgpu_device_wb_free(adev, index);
 713         return r;
 714 }
 715
 716 /**
 717  * cik_sdma_vm_copy_pages - update PTEs by copying them from the GART
 718  *
 719  * @ib: indirect buffer to fill with commands
 720  * @pe: addr of the page entry
 721  * @src: src addr to copy from
 722  * @count: number of page entries to update
 723  *
 724  * Update PTEs by copying them from the GART using sDMA (CIK).
 725  */
 726 static void cik_sdma_vm_copy_pte(struct amdgpu_ib *ib,
 727                                  uint64_t pe, uint64_t src,
 728                                  unsigned count)
 729 {
 730         unsigned bytes = count * 8;
 731
 732         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY,
 733                 SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 734         ib->ptr[ib->length_dw++] = bytes;
 735         ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */
 736         ib->ptr[ib->length_dw++] = lower_32_bits(src);
 737         ib->ptr[ib->length_dw++] = upper_32_bits(src);
 738         ib->ptr[ib->length_dw++] = lower_32_bits(pe);
 739         ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 740 }
 741
 742 /**
 743  * cik_sdma_vm_write_pages - update PTEs by writing them manually
 744  *
 745  * @ib: indirect buffer to fill with commands
 746  * @pe: addr of the page entry
 747  * @value: dst addr to write into pe
 748  * @count: number of page entries to update
 749  * @incr: increase next addr by incr bytes
 750  *
 751  * Update PTEs by writing them manually using sDMA (CIK).
 752  */
 753 static void cik_sdma_vm_write_pte(struct amdgpu_ib *ib, uint64_t pe,
 754                                   uint64_t value, unsigned count,
 755                                   uint32_t incr)
 756 {
 757         unsigned ndw = count * 2;
 758
 759         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_WRITE,
 760                 SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 761         ib->ptr[ib->length_dw++] = lower_32_bits(pe);
 762         ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 763         ib->ptr[ib->length_dw++] = ndw;
 764         for (; ndw > 0; ndw -= 2) {
 765                 ib->ptr[ib->length_dw++] = lower_32_bits(value);
 766                 ib->ptr[ib->length_dw++] = upper_32_bits(value);
 767                 value += incr;
 768         }
 769 }
 770
 771 /**
 772  * cik_sdma_vm_set_pages - update the page tables using sDMA
 773  *
 774  * @ib: indirect buffer to fill with commands
 775  * @pe: addr of the page entry
 776  * @addr: dst addr to write into pe
 777  * @count: number of page entries to update
 778  * @incr: increase next addr by incr bytes
 779  * @flags: access flags
 780  *
 781  * Update the page tables using sDMA (CIK).
 782  */
 783 static void cik_sdma_vm_set_pte_pde(struct amdgpu_ib *ib, uint64_t pe,
 784                                     uint64_t addr, unsigned count,
 785                                     uint32_t incr, uint64_t flags)
 786 {
 787         /* for physically contiguous pages (vram) */
 788         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_GENERATE_PTE_PDE, 0, 0);
 789         ib->ptr[ib->length_dw++] = lower_32_bits(pe); /* dst addr */
 790         ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 791         ib->ptr[ib->length_dw++] = lower_32_bits(flags); /* mask */
 792         ib->ptr[ib->length_dw++] = upper_32_bits(flags);
 793         ib->ptr[ib->length_dw++] = lower_32_bits(addr); /* value */
 794         ib->ptr[ib->length_dw++] = upper_32_bits(addr);
 795         ib->ptr[ib->length_dw++] = incr; /* increment size */
 796         ib->ptr[ib->length_dw++] = 0;
 797         ib->ptr[ib->length_dw++] = count; /* number of entries */
 798 }
 799
 800 /**
 801  * cik_sdma_vm_pad_ib - pad the IB to the required number of dw
 802  *
 803  * @ib: indirect buffer to fill with padding
 804  *
 805  */
 806 static void cik_sdma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib)
 807 {
 808         struct amdgpu_sdma_instance *sdma = amdgpu_sdma_get_instance_from_ring(ring);
 809         u32 pad_count;
 810         int i;
 811
 812         pad_count = (8 - (ib->length_dw & 0x7)) % 8;
 813         for (i = 0; i < pad_count; i++)
 814                 if (sdma && sdma->burst_nop && (i == 0))
 815                         ib->ptr[ib->length_dw++] =
 816                                         SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0) |
 817                                         SDMA_NOP_COUNT(pad_count - 1);
 818                 else
 819                         ib->ptr[ib->length_dw++] =
 820                                         SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0);
 821 }
 822
 823 /**
 824  * cik_sdma_ring_emit_pipeline_sync - sync the pipeline
 825  *
 826  * @ring: amdgpu_ring pointer
 827  *
 828  * Make sure all previous operations are completed (CIK).
 829  */
 830 static void cik_sdma_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
 831 {
 832         uint32_t seq = ring->fence_drv.sync_seq;
 833         uint64_t addr = ring->fence_drv.gpu_addr;
 834
 835         /* wait for idle */
 836         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0,
 837                                             SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 838                                             SDMA_POLL_REG_MEM_EXTRA_FUNC(3) | /* equal */
 839                                             SDMA_POLL_REG_MEM_EXTRA_M));
 840         amdgpu_ring_write(ring, addr & 0xfffffffc);
 841         amdgpu_ring_write(ring, upper_32_bits(addr) & 0xffffffff);
 842         amdgpu_ring_write(ring, seq); /* reference */
 843         amdgpu_ring_write(ring, 0xffffffff); /* mask */
 844         amdgpu_ring_write(ring, (0xfff << 16) | 4); /* retry count, poll interval */
 845 }
 846
 847 /**
 848  * cik_sdma_ring_emit_vm_flush - cik vm flush using sDMA
 849  *
 850  * @ring: amdgpu_ring pointer
 851  * @vm: amdgpu_vm pointer
 852  *
 853  * Update the page table base and flush the VM TLB
 854  * using sDMA (CIK).
 855  */
 856 static void cik_sdma_ring_emit_vm_flush(struct amdgpu_ring *ring,
 857                                         unsigned vmid, uint64_t pd_addr)
 858 {
 859         u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 860                           SDMA_POLL_REG_MEM_EXTRA_FUNC(0)); /* always */
 861
 862         amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
 863
 864         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
 865         amdgpu_ring_write(ring, mmVM_INVALIDATE_REQUEST << 2);
 866         amdgpu_ring_write(ring, 0);
 867         amdgpu_ring_write(ring, 0); /* reference */
 868         amdgpu_ring_write(ring, 0); /* mask */
 869         amdgpu_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
 870 }
 871
 872 static void cik_sdma_ring_emit_wreg(struct amdgpu_ring *ring,
 873                                     uint32_t reg, uint32_t val)
 874 {
 875         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 876         amdgpu_ring_write(ring, reg);
 877         amdgpu_ring_write(ring, val);
 878 }
 879
 880 static void cik_enable_sdma_mgcg(struct amdgpu_device *adev,
 881                                  bool enable)
 882 {
 883         u32 orig, data;
 884
 885         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) {
 886                 WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, 0x00000100);
 887                 WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, 0x00000100);
 888         } else {
 889                 orig = data = RREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET);
 890                 data |= 0xff000000;
 891                 if (data != orig)
 892                         WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, data);
 893
 894                 orig = data = RREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET);
 895                 data |= 0xff000000;
 896                 if (data != orig)
 897                         WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, data);
 898         }
 899 }
 900
 901 static void cik_enable_sdma_mgls(struct amdgpu_device *adev,
 902                                  bool enable)
 903 {
 904         u32 orig, data;
 905
 906         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_LS)) {
 907                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET);
 908                 data |= 0x100;
 909                 if (orig != data)
 910                         WREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET, data);
 911
 912                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET);
 913                 data |= 0x100;
 914                 if (orig != data)
 915                         WREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET, data);
 916         } else {
 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         }
 927 }
 928
 929 static int cik_sdma_early_init(void *handle)
 930 {
 931         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 932
 933         adev->sdma.num_instances = SDMA_MAX_INSTANCE;
 934
 935         cik_sdma_set_ring_funcs(adev);
 936         cik_sdma_set_irq_funcs(adev);
 937         cik_sdma_set_buffer_funcs(adev);
 938         cik_sdma_set_vm_pte_funcs(adev);
 939
 940         return 0;
 941 }
 942
 943 static int cik_sdma_sw_init(void *handle)
 944 {
 945         struct amdgpu_ring *ring;
 946         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 947         int r, i;
 948
 949         r = cik_sdma_init_microcode(adev);
 950         if (r) {
 951                 DRM_ERROR("Failed to load sdma firmware!\n");
 952                 return r;
 953         }
 954
 955         /* SDMA trap event */
 956         r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 224,
 957                               &adev->sdma.trap_irq);
 958         if (r)
 959                 return r;
 960
 961         /* SDMA Privileged inst */
 962         r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 241,
 963                               &adev->sdma.illegal_inst_irq);
 964         if (r)
 965                 return r;
 966
 967         /* SDMA Privileged inst */
 968         r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 247,
 969                               &adev->sdma.illegal_inst_irq);
 970         if (r)
 971                 return r;
 972
 973         for (i = 0; i < adev->sdma.num_instances; i++) {
 974                 ring = &adev->sdma.instance[i].ring;
 975                 ring->ring_obj = NULL;
 976                 sprintf(ring->name, "sdma%d", i);
 977                 r = amdgpu_ring_init(adev, ring, 1024,
 978                                      &adev->sdma.trap_irq,
 979                                      (i == 0) ?
 980                                      AMDGPU_SDMA_IRQ_INSTANCE0 :
 981                                      AMDGPU_SDMA_IRQ_INSTANCE1);
 982                 if (r)
 983                         return r;
 984         }
 985
 986         return r;
 987 }
 988
 989 static int cik_sdma_sw_fini(void *handle)
 990 {
 991         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 992         int i;
 993
 994         for (i = 0; i < adev->sdma.num_instances; i++)
 995                 amdgpu_ring_fini(&adev->sdma.instance[i].ring);
 996
 997         cik_sdma_free_microcode(adev);
 998         return 0;
 999 }
1000
1001 static int cik_sdma_hw_init(void *handle)
1002 {
1003         int r;
1004         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1005
1006         r = cik_sdma_start(adev);
1007         if (r)
1008                 return r;
1009
1010         return r;
1011 }
1012
1013 static int cik_sdma_hw_fini(void *handle)
1014 {
1015         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1016
1017         cik_ctx_switch_enable(adev, false);
1018         cik_sdma_enable(adev, false);
1019
1020         return 0;
1021 }
1022
1023 static int cik_sdma_suspend(void *handle)
1024 {
1025         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1026
1027         return cik_sdma_hw_fini(adev);
1028 }
1029
1030 static int cik_sdma_resume(void *handle)
1031 {
1032         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1033
1034         cik_sdma_soft_reset(handle);
1035
1036         return cik_sdma_hw_init(adev);
1037 }
1038
1039 static bool cik_sdma_is_idle(void *handle)
1040 {
1041         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1042         u32 tmp = RREG32(mmSRBM_STATUS2);
1043
1044         if (tmp & (SRBM_STATUS2__SDMA_BUSY_MASK |
1045                                 SRBM_STATUS2__SDMA1_BUSY_MASK))
1046             return false;
1047
1048         return true;
1049 }
1050
1051 static int cik_sdma_wait_for_idle(void *handle)
1052 {
1053         unsigned i;
1054         u32 tmp;
1055         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1056
1057         for (i = 0; i < adev->usec_timeout; i++) {
1058                 tmp = RREG32(mmSRBM_STATUS2) & (SRBM_STATUS2__SDMA_BUSY_MASK |
1059                                 SRBM_STATUS2__SDMA1_BUSY_MASK);
1060
1061                 if (!tmp)
1062                         return 0;
1063                 udelay(1);
1064         }
1065         return -ETIMEDOUT;
1066 }
1067
1068 static int cik_sdma_soft_reset(void *handle)
1069 {
1070         u32 srbm_soft_reset = 0;
1071         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1072         u32 tmp = RREG32(mmSRBM_STATUS2);
1073
1074         if (tmp & SRBM_STATUS2__SDMA_BUSY_MASK) {
1075                 /* sdma0 */
1076                 tmp = RREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET);
1077                 tmp |= SDMA0_F32_CNTL__HALT_MASK;
1078                 WREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET, tmp);
1079                 srbm_soft_reset |= SRBM_SOFT_RESET__SOFT_RESET_SDMA_MASK;
1080         }
1081         if (tmp & SRBM_STATUS2__SDMA1_BUSY_MASK) {
1082                 /* sdma1 */
1083                 tmp = RREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET);
1084                 tmp |= SDMA0_F32_CNTL__HALT_MASK;
1085                 WREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET, tmp);
1086                 srbm_soft_reset |= SRBM_SOFT_RESET__SOFT_RESET_SDMA1_MASK;
1087         }
1088
1089         if (srbm_soft_reset) {
1090                 tmp = RREG32(mmSRBM_SOFT_RESET);
1091                 tmp |= srbm_soft_reset;
1092                 dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp);
1093                 WREG32(mmSRBM_SOFT_RESET, tmp);
1094                 tmp = RREG32(mmSRBM_SOFT_RESET);
1095
1096                 udelay(50);
1097
1098                 tmp &= ~srbm_soft_reset;
1099                 WREG32(mmSRBM_SOFT_RESET, tmp);
1100                 tmp = RREG32(mmSRBM_SOFT_RESET);
1101
1102                 /* Wait a little for things to settle down */
1103                 udelay(50);
1104         }
1105
1106         return 0;
1107 }
1108
1109 static int cik_sdma_set_trap_irq_state(struct amdgpu_device *adev,
1110                                        struct amdgpu_irq_src *src,
1111                                        unsigned type,
1112                                        enum amdgpu_interrupt_state state)
1113 {
1114         u32 sdma_cntl;
1115
1116         switch (type) {
1117         case AMDGPU_SDMA_IRQ_INSTANCE0:
1118                 switch (state) {
1119                 case AMDGPU_IRQ_STATE_DISABLE:
1120                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET);
1121                         sdma_cntl &= ~SDMA0_CNTL__TRAP_ENABLE_MASK;
1122                         WREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET, sdma_cntl);
1123                         break;
1124                 case AMDGPU_IRQ_STATE_ENABLE:
1125                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET);
1126                         sdma_cntl |= SDMA0_CNTL__TRAP_ENABLE_MASK;
1127                         WREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET, sdma_cntl);
1128                         break;
1129                 default:
1130                         break;
1131                 }
1132                 break;
1133         case AMDGPU_SDMA_IRQ_INSTANCE1:
1134                 switch (state) {
1135                 case AMDGPU_IRQ_STATE_DISABLE:
1136                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET);
1137                         sdma_cntl &= ~SDMA0_CNTL__TRAP_ENABLE_MASK;
1138                         WREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET, sdma_cntl);
1139                         break;
1140                 case AMDGPU_IRQ_STATE_ENABLE:
1141                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET);
1142                         sdma_cntl |= SDMA0_CNTL__TRAP_ENABLE_MASK;
1143                         WREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET, sdma_cntl);
1144                         break;
1145                 default:
1146                         break;
1147                 }
1148                 break;
1149         default:
1150                 break;
1151         }
1152         return 0;
1153 }
1154
1155 static int cik_sdma_process_trap_irq(struct amdgpu_device *adev,
1156                                      struct amdgpu_irq_src *source,
1157                                      struct amdgpu_iv_entry *entry)
1158 {
1159         u8 instance_id, queue_id;
1160
1161         instance_id = (entry->ring_id & 0x3) >> 0;
1162         queue_id = (entry->ring_id & 0xc) >> 2;
1163         DRM_DEBUG("IH: SDMA trap\n");
1164         switch (instance_id) {
1165         case 0:
1166                 switch (queue_id) {
1167                 case 0:
1168                         amdgpu_fence_process(&adev->sdma.instance[0].ring);
1169                         break;
1170                 case 1:
1171                         /* XXX compute */
1172                         break;
1173                 case 2:
1174                         /* XXX compute */
1175                         break;
1176                 }
1177                 break;
1178         case 1:
1179                 switch (queue_id) {
1180                 case 0:
1181                         amdgpu_fence_process(&adev->sdma.instance[1].ring);
1182                         break;
1183                 case 1:
1184                         /* XXX compute */
1185                         break;
1186                 case 2:
1187                         /* XXX compute */
1188                         break;
1189                 }
1190                 break;
1191         }
1192
1193         return 0;
1194 }
1195
1196 static int cik_sdma_process_illegal_inst_irq(struct amdgpu_device *adev,
1197                                              struct amdgpu_irq_src *source,
1198                                              struct amdgpu_iv_entry *entry)
1199 {
1200         u8 instance_id;
1201
1202         DRM_ERROR("Illegal instruction in SDMA command stream\n");
1203         instance_id = (entry->ring_id & 0x3) >> 0;
1204         drm_sched_fault(&adev->sdma.instance[instance_id].ring.sched);
1205         return 0;
1206 }
1207
1208 static int cik_sdma_set_clockgating_state(void *handle,
1209                                           enum amd_clockgating_state state)
1210 {
1211         bool gate = false;
1212         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1213
1214         if (state == AMD_CG_STATE_GATE)
1215                 gate = true;
1216
1217         cik_enable_sdma_mgcg(adev, gate);
1218         cik_enable_sdma_mgls(adev, gate);
1219
1220         return 0;
1221 }
1222
1223 static int cik_sdma_set_powergating_state(void *handle,
1224                                           enum amd_powergating_state state)
1225 {
1226         return 0;
1227 }
1228
1229 static const struct amd_ip_funcs cik_sdma_ip_funcs = {
1230         .name = "cik_sdma",
1231         .early_init = cik_sdma_early_init,
1232         .late_init = NULL,
1233         .sw_init = cik_sdma_sw_init,
1234         .sw_fini = cik_sdma_sw_fini,
1235         .hw_init = cik_sdma_hw_init,
1236         .hw_fini = cik_sdma_hw_fini,
1237         .suspend = cik_sdma_suspend,
1238         .resume = cik_sdma_resume,
1239         .is_idle = cik_sdma_is_idle,
1240         .wait_for_idle = cik_sdma_wait_for_idle,
1241         .soft_reset = cik_sdma_soft_reset,
1242         .set_clockgating_state = cik_sdma_set_clockgating_state,
1243         .set_powergating_state = cik_sdma_set_powergating_state,
1244 };
1245
1246 static const struct amdgpu_ring_funcs cik_sdma_ring_funcs = {
1247         .type = AMDGPU_RING_TYPE_SDMA,
1248         .align_mask = 0xf,
1249         .nop = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0),
1250         .support_64bit_ptrs = false,
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         .emit_frame_size =
1255                 6 + /* cik_sdma_ring_emit_hdp_flush */
1256                 3 + /* hdp invalidate */
1257                 6 + /* cik_sdma_ring_emit_pipeline_sync */
1258                 CIK_FLUSH_GPU_TLB_NUM_WREG * 3 + 6 + /* cik_sdma_ring_emit_vm_flush */
1259                 9 + 9 + 9, /* cik_sdma_ring_emit_fence x3 for user fence, vm fence */
1260         .emit_ib_size = 7 + 4, /* cik_sdma_ring_emit_ib */
1261         .emit_ib = cik_sdma_ring_emit_ib,
1262         .emit_fence = cik_sdma_ring_emit_fence,
1263         .emit_pipeline_sync = cik_sdma_ring_emit_pipeline_sync,
1264         .emit_vm_flush = cik_sdma_ring_emit_vm_flush,
1265         .emit_hdp_flush = cik_sdma_ring_emit_hdp_flush,
1266         .test_ring = cik_sdma_ring_test_ring,
1267         .test_ib = cik_sdma_ring_test_ib,
1268         .insert_nop = cik_sdma_ring_insert_nop,
1269         .pad_ib = cik_sdma_ring_pad_ib,
1270         .emit_wreg = cik_sdma_ring_emit_wreg,
1271 };
1272
1273 static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev)
1274 {
1275         int i;
1276
1277         for (i = 0; i < adev->sdma.num_instances; i++) {
1278                 adev->sdma.instance[i].ring.funcs = &cik_sdma_ring_funcs;
1279                 adev->sdma.instance[i].ring.me = i;
1280         }
1281 }
1282
1283 static const struct amdgpu_irq_src_funcs cik_sdma_trap_irq_funcs = {
1284         .set = cik_sdma_set_trap_irq_state,
1285         .process = cik_sdma_process_trap_irq,
1286 };
1287
1288 static const struct amdgpu_irq_src_funcs cik_sdma_illegal_inst_irq_funcs = {
1289         .process = cik_sdma_process_illegal_inst_irq,
1290 };
1291
1292 static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev)
1293 {
1294         adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST;
1295         adev->sdma.trap_irq.funcs = &cik_sdma_trap_irq_funcs;
1296         adev->sdma.illegal_inst_irq.funcs = &cik_sdma_illegal_inst_irq_funcs;
1297 }
1298
1299 /**
1300  * cik_sdma_emit_copy_buffer - copy buffer using the sDMA engine
1301  *
1302  * @ring: amdgpu_ring structure holding ring information
1303  * @src_offset: src GPU address
1304  * @dst_offset: dst GPU address
1305  * @byte_count: number of bytes to xfer
1306  *
1307  * Copy GPU buffers using the DMA engine (CIK).
1308  * Used by the amdgpu ttm implementation to move pages if
1309  * registered as the asic copy callback.
1310  */
1311 static void cik_sdma_emit_copy_buffer(struct amdgpu_ib *ib,
1312                                       uint64_t src_offset,
1313                                       uint64_t dst_offset,
1314                                       uint32_t byte_count)
1315 {
1316         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY, SDMA_COPY_SUB_OPCODE_LINEAR, 0);
1317         ib->ptr[ib->length_dw++] = byte_count;
1318         ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */
1319         ib->ptr[ib->length_dw++] = lower_32_bits(src_offset);
1320         ib->ptr[ib->length_dw++] = upper_32_bits(src_offset);
1321         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
1322         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset);
1323 }
1324
1325 /**
1326  * cik_sdma_emit_fill_buffer - fill buffer using the sDMA engine
1327  *
1328  * @ring: amdgpu_ring structure holding ring information
1329  * @src_data: value to write to buffer
1330  * @dst_offset: dst GPU address
1331  * @byte_count: number of bytes to xfer
1332  *
1333  * Fill GPU buffers using the DMA engine (CIK).
1334  */
1335 static void cik_sdma_emit_fill_buffer(struct amdgpu_ib *ib,
1336                                       uint32_t src_data,
1337                                       uint64_t dst_offset,
1338                                       uint32_t byte_count)
1339 {
1340         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_CONSTANT_FILL, 0, 0);
1341         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
1342         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset);
1343         ib->ptr[ib->length_dw++] = src_data;
1344         ib->ptr[ib->length_dw++] = byte_count;
1345 }
1346
1347 static const struct amdgpu_buffer_funcs cik_sdma_buffer_funcs = {
1348         .copy_max_bytes = 0x1fffff,
1349         .copy_num_dw = 7,
1350         .emit_copy_buffer = cik_sdma_emit_copy_buffer,
1351
1352         .fill_max_bytes = 0x1fffff,
1353         .fill_num_dw = 5,
1354         .emit_fill_buffer = cik_sdma_emit_fill_buffer,
1355 };
1356
1357 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev)
1358 {
1359         adev->mman.buffer_funcs = &cik_sdma_buffer_funcs;
1360         adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
1361 }
1362
1363 static const struct amdgpu_vm_pte_funcs cik_sdma_vm_pte_funcs = {
1364         .copy_pte_num_dw = 7,
1365         .copy_pte = cik_sdma_vm_copy_pte,
1366
1367         .write_pte = cik_sdma_vm_write_pte,
1368         .set_pte_pde = cik_sdma_vm_set_pte_pde,
1369 };
1370
1371 static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev)
1372 {
1373         struct drm_gpu_scheduler *sched;
1374         unsigned i;
1375
1376         adev->vm_manager.vm_pte_funcs = &cik_sdma_vm_pte_funcs;
1377         for (i = 0; i < adev->sdma.num_instances; i++) {
1378                 sched = &adev->sdma.instance[i].ring.sched;
1379                 adev->vm_manager.vm_pte_rqs[i] =
1380                         &sched->sched_rq[DRM_SCHED_PRIORITY_KERNEL];
1381         }
1382         adev->vm_manager.vm_pte_num_rqs = adev->sdma.num_instances;
1383 }
1384
1385 const struct amdgpu_ip_block_version cik_sdma_ip_block =
1386 {
1387         .type = AMD_IP_BLOCK_TYPE_SDMA,
1388         .major = 2,
1389         .minor = 0,
1390         .rev = 0,
1391         .funcs = &cik_sdma_ip_funcs,
1392 };