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
  25 #include <linux/firmware.h>
  26 #include <linux/module.h>
  27
  28 #include "amdgpu.h"
  29 #include "amdgpu_ucode.h"
  30 #include "amdgpu_trace.h"
  31 #include "cikd.h"
  32 #include "cik.h"
  33
  34 #include "bif/bif_4_1_d.h"
  35 #include "bif/bif_4_1_sh_mask.h"
  36
  37 #include "gca/gfx_7_2_d.h"
  38 #include "gca/gfx_7_2_enum.h"
  39 #include "gca/gfx_7_2_sh_mask.h"
  40
  41 #include "gmc/gmc_7_1_d.h"
  42 #include "gmc/gmc_7_1_sh_mask.h"
  43
  44 #include "oss/oss_2_0_d.h"
  45 #include "oss/oss_2_0_sh_mask.h"
  46
  47 static const u32 sdma_offsets[SDMA_MAX_INSTANCE] =
  48 {
  49         SDMA0_REGISTER_OFFSET,
  50         SDMA1_REGISTER_OFFSET
  51 };
  52
  53 static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev);
  54 static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev);
  55 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev);
  56 static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev);
  57 static int cik_sdma_soft_reset(void *handle);
  58
  59 MODULE_FIRMWARE("amdgpu/bonaire_sdma.bin");
  60 MODULE_FIRMWARE("amdgpu/bonaire_sdma1.bin");
  61 MODULE_FIRMWARE("amdgpu/hawaii_sdma.bin");
  62 MODULE_FIRMWARE("amdgpu/hawaii_sdma1.bin");
  63 MODULE_FIRMWARE("amdgpu/kaveri_sdma.bin");
  64 MODULE_FIRMWARE("amdgpu/kaveri_sdma1.bin");
  65 MODULE_FIRMWARE("amdgpu/kabini_sdma.bin");
  66 MODULE_FIRMWARE("amdgpu/kabini_sdma1.bin");
  67 MODULE_FIRMWARE("amdgpu/mullins_sdma.bin");
  68 MODULE_FIRMWARE("amdgpu/mullins_sdma1.bin");
  69
  70 u32 amdgpu_cik_gpu_check_soft_reset(struct amdgpu_device *adev);
  71
  72
  73 static void cik_sdma_free_microcode(struct amdgpu_device *adev)
  74 {
  75         int i;
  76         for (i = 0; i < adev->sdma.num_instances; i++) {
  77                         release_firmware(adev->sdma.instance[i].fw);
  78                         adev->sdma.instance[i].fw = NULL;
  79         }
  80 }
  81
  82 /*
  83  * sDMA - System DMA
  84  * Starting with CIK, the GPU has new asynchronous
  85  * DMA engines.  These engines are used for compute
  86  * and gfx.  There are two DMA engines (SDMA0, SDMA1)
  87  * and each one supports 1 ring buffer used for gfx
  88  * and 2 queues used for compute.
  89  *
  90  * The programming model is very similar to the CP
  91  * (ring buffer, IBs, etc.), but sDMA has it's own
  92  * packet format that is different from the PM4 format
  93  * used by the CP. sDMA supports copying data, writing
  94  * embedded data, solid fills, and a number of other
  95  * things.  It also has support for tiling/detiling of
  96  * buffers.
  97  */
  98
  99 /**
 100  * cik_sdma_init_microcode - load ucode images from disk
 101  *
 102  * @adev: amdgpu_device pointer
 103  *
 104  * Use the firmware interface to load the ucode images into
 105  * the driver (not loaded into hw).
 106  * Returns 0 on success, error on failure.
 107  */
 108 static int cik_sdma_init_microcode(struct amdgpu_device *adev)
 109 {
 110         const char *chip_name;
 111         char fw_name[30];
 112         int err = 0, i;
 113
 114         DRM_DEBUG("\n");
 115
 116         switch (adev->asic_type) {
 117         case CHIP_BONAIRE:
 118                 chip_name = "bonaire";
 119                 break;
 120         case CHIP_HAWAII:
 121                 chip_name = "hawaii";
 122                 break;
 123         case CHIP_KAVERI:
 124                 chip_name = "kaveri";
 125                 break;
 126         case CHIP_KABINI:
 127                 chip_name = "kabini";
 128                 break;
 129         case CHIP_MULLINS:
 130                 chip_name = "mullins";
 131                 break;
 132         default: BUG();
 133         }
 134
 135         for (i = 0; i < adev->sdma.num_instances; i++) {
 136                 if (i == 0)
 137                         snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_sdma.bin", chip_name);
 138                 else
 139                         snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_sdma1.bin", chip_name);
 140                 err = request_firmware(&adev->sdma.instance[i].fw, fw_name, adev->dev);
 141                 if (err)
 142                         goto out;
 143                 err = amdgpu_ucode_validate(adev->sdma.instance[i].fw);
 144         }
 145 out:
 146         if (err) {
 147                 pr_err("cik_sdma: Failed to load firmware \"%s\"\n", 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 uint64_t cik_sdma_ring_get_rptr(struct amdgpu_ring *ring)
 164 {
 165         u32 rptr;
 166
 167         rptr = *ring->rptr_cpu_addr;
 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 uint64_t cik_sdma_ring_get_wptr(struct amdgpu_ring *ring)
 180 {
 181         struct amdgpu_device *adev = ring->adev;
 182
 183         return (RREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[ring->me]) & 0x3fffc) >> 2;
 184 }
 185
 186 /**
 187  * cik_sdma_ring_set_wptr - commit the write pointer
 188  *
 189  * @ring: amdgpu ring pointer
 190  *
 191  * Write the wptr back to the hardware (CIK+).
 192  */
 193 static void cik_sdma_ring_set_wptr(struct amdgpu_ring *ring)
 194 {
 195         struct amdgpu_device *adev = ring->adev;
 196
 197         WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[ring->me],
 198                (ring->wptr << 2) & 0x3fffc);
 199 }
 200
 201 static void cik_sdma_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
 202 {
 203         struct amdgpu_sdma_instance *sdma = amdgpu_sdma_get_instance_from_ring(ring);
 204         int i;
 205
 206         for (i = 0; i < count; i++)
 207                 if (sdma && sdma->burst_nop && (i == 0))
 208                         amdgpu_ring_write(ring, ring->funcs->nop |
 209                                           SDMA_NOP_COUNT(count - 1));
 210                 else
 211                         amdgpu_ring_write(ring, ring->funcs->nop);
 212 }
 213
 214 /**
 215  * cik_sdma_ring_emit_ib - Schedule an IB on the DMA engine
 216  *
 217  * @ring: amdgpu ring pointer
 218  * @job: job to retrive vmid from
 219  * @ib: IB object to schedule
 220  * @flags: unused
 221  *
 222  * Schedule an IB in the DMA ring (CIK).
 223  */
 224 static void cik_sdma_ring_emit_ib(struct amdgpu_ring *ring,
 225                                   struct amdgpu_job *job,
 226                                   struct amdgpu_ib *ib,
 227                                   uint32_t flags)
 228 {
 229         unsigned vmid = AMDGPU_JOB_GET_VMID(job);
 230         u32 extra_bits = vmid & 0xf;
 231
 232         /* IB packet must end on a 8 DW boundary */
 233         cik_sdma_ring_insert_nop(ring, (4 - lower_32_bits(ring->wptr)) & 7);
 234
 235         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_INDIRECT_BUFFER, 0, extra_bits));
 236         amdgpu_ring_write(ring, ib->gpu_addr & 0xffffffe0); /* base must be 32 byte aligned */
 237         amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr) & 0xffffffff);
 238         amdgpu_ring_write(ring, ib->length_dw);
 239
 240 }
 241
 242 /**
 243  * cik_sdma_ring_emit_hdp_flush - emit an hdp flush on the DMA ring
 244  *
 245  * @ring: amdgpu ring pointer
 246  *
 247  * Emit an hdp flush packet on the requested DMA ring.
 248  */
 249 static void cik_sdma_ring_emit_hdp_flush(struct amdgpu_ring *ring)
 250 {
 251         u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) |
 252                           SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */
 253         u32 ref_and_mask;
 254
 255         if (ring->me == 0)
 256                 ref_and_mask = GPU_HDP_FLUSH_DONE__SDMA0_MASK;
 257         else
 258                 ref_and_mask = GPU_HDP_FLUSH_DONE__SDMA1_MASK;
 259
 260         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
 261         amdgpu_ring_write(ring, mmGPU_HDP_FLUSH_DONE << 2);
 262         amdgpu_ring_write(ring, mmGPU_HDP_FLUSH_REQ << 2);
 263         amdgpu_ring_write(ring, ref_and_mask); /* reference */
 264         amdgpu_ring_write(ring, ref_and_mask); /* mask */
 265         amdgpu_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
 266 }
 267
 268 /**
 269  * cik_sdma_ring_emit_fence - emit a fence on the DMA ring
 270  *
 271  * @ring: amdgpu ring pointer
 272  * @addr: address
 273  * @seq: sequence number
 274  * @flags: fence related flags
 275  *
 276  * Add a DMA fence packet to the ring to write
 277  * the fence seq number and DMA trap packet to generate
 278  * an interrupt if needed (CIK).
 279  */
 280 static void cik_sdma_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq,
 281                                      unsigned flags)
 282 {
 283         bool write64bit = flags & AMDGPU_FENCE_FLAG_64BIT;
 284         /* write the fence */
 285         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0));
 286         amdgpu_ring_write(ring, lower_32_bits(addr));
 287         amdgpu_ring_write(ring, upper_32_bits(addr));
 288         amdgpu_ring_write(ring, lower_32_bits(seq));
 289
 290         /* optionally write high bits as well */
 291         if (write64bit) {
 292                 addr += 4;
 293                 amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0));
 294                 amdgpu_ring_write(ring, lower_32_bits(addr));
 295                 amdgpu_ring_write(ring, upper_32_bits(addr));
 296                 amdgpu_ring_write(ring, upper_32_bits(seq));
 297         }
 298
 299         /* generate an interrupt */
 300         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0));
 301 }
 302
 303 /**
 304  * cik_sdma_gfx_stop - stop the gfx async dma engines
 305  *
 306  * @adev: amdgpu_device pointer
 307  *
 308  * Stop the gfx async dma ring buffers (CIK).
 309  */
 310 static void cik_sdma_gfx_stop(struct amdgpu_device *adev)
 311 {
 312         u32 rb_cntl;
 313         int i;
 314
 315         amdgpu_sdma_unset_buffer_funcs_helper(adev);
 316
 317         for (i = 0; i < adev->sdma.num_instances; i++) {
 318                 rb_cntl = RREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i]);
 319                 rb_cntl &= ~SDMA0_GFX_RB_CNTL__RB_ENABLE_MASK;
 320                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i], rb_cntl);
 321                 WREG32(mmSDMA0_GFX_IB_CNTL + sdma_offsets[i], 0);
 322         }
 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         int i, j, r;
 436
 437         for (i = 0; i < adev->sdma.num_instances; i++) {
 438                 ring = &adev->sdma.instance[i].ring;
 439
 440                 mutex_lock(&adev->srbm_mutex);
 441                 for (j = 0; j < 16; j++) {
 442                         cik_srbm_select(adev, 0, 0, 0, j);
 443                         /* SDMA GFX */
 444                         WREG32(mmSDMA0_GFX_VIRTUAL_ADDR + sdma_offsets[i], 0);
 445                         WREG32(mmSDMA0_GFX_APE1_CNTL + sdma_offsets[i], 0);
 446                         /* XXX SDMA RLC - todo */
 447                 }
 448                 cik_srbm_select(adev, 0, 0, 0, 0);
 449                 mutex_unlock(&adev->srbm_mutex);
 450
 451                 WREG32(mmSDMA0_TILING_CONFIG + sdma_offsets[i],
 452                        adev->gfx.config.gb_addr_config & 0x70);
 453
 454                 WREG32(mmSDMA0_SEM_INCOMPLETE_TIMER_CNTL + sdma_offsets[i], 0);
 455                 WREG32(mmSDMA0_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0);
 456
 457                 /* Set ring buffer size in dwords */
 458                 rb_bufsz = order_base_2(ring->ring_size / 4);
 459                 rb_cntl = rb_bufsz << 1;
 460 #ifdef __BIG_ENDIAN
 461                 rb_cntl |= SDMA0_GFX_RB_CNTL__RB_SWAP_ENABLE_MASK |
 462                         SDMA0_GFX_RB_CNTL__RPTR_WRITEBACK_SWAP_ENABLE_MASK;
 463 #endif
 464                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i], rb_cntl);
 465
 466                 /* Initialize the ring buffer's read and write pointers */
 467                 WREG32(mmSDMA0_GFX_RB_RPTR + sdma_offsets[i], 0);
 468                 WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[i], 0);
 469                 WREG32(mmSDMA0_GFX_IB_RPTR + sdma_offsets[i], 0);
 470                 WREG32(mmSDMA0_GFX_IB_OFFSET + sdma_offsets[i], 0);
 471
 472                 /* set the wb address whether it's enabled or not */
 473                 WREG32(mmSDMA0_GFX_RB_RPTR_ADDR_HI + sdma_offsets[i],
 474                        upper_32_bits(ring->rptr_gpu_addr) & 0xFFFFFFFF);
 475                 WREG32(mmSDMA0_GFX_RB_RPTR_ADDR_LO + sdma_offsets[i],
 476                        ((ring->rptr_gpu_addr) & 0xFFFFFFFC));
 477
 478                 rb_cntl |= SDMA0_GFX_RB_CNTL__RPTR_WRITEBACK_ENABLE_MASK;
 479
 480                 WREG32(mmSDMA0_GFX_RB_BASE + sdma_offsets[i], ring->gpu_addr >> 8);
 481                 WREG32(mmSDMA0_GFX_RB_BASE_HI + sdma_offsets[i], ring->gpu_addr >> 40);
 482
 483                 ring->wptr = 0;
 484                 WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[i], ring->wptr << 2);
 485
 486                 /* enable DMA RB */
 487                 WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i],
 488                        rb_cntl | SDMA0_GFX_RB_CNTL__RB_ENABLE_MASK);
 489
 490                 ib_cntl = SDMA0_GFX_IB_CNTL__IB_ENABLE_MASK;
 491 #ifdef __BIG_ENDIAN
 492                 ib_cntl |= SDMA0_GFX_IB_CNTL__IB_SWAP_ENABLE_MASK;
 493 #endif
 494                 /* enable DMA IBs */
 495                 WREG32(mmSDMA0_GFX_IB_CNTL + sdma_offsets[i], ib_cntl);
 496
 497                 ring->sched.ready = true;
 498         }
 499
 500         cik_sdma_enable(adev, true);
 501
 502         for (i = 0; i < adev->sdma.num_instances; i++) {
 503                 ring = &adev->sdma.instance[i].ring;
 504                 r = amdgpu_ring_test_helper(ring);
 505                 if (r)
 506                         return r;
 507
 508                 if (adev->mman.buffer_funcs_ring == ring)
 509                         amdgpu_ttm_set_buffer_funcs_status(adev, true);
 510         }
 511
 512         return 0;
 513 }
 514
 515 /**
 516  * cik_sdma_rlc_resume - setup and start the async dma engines
 517  *
 518  * @adev: amdgpu_device pointer
 519  *
 520  * Set up the compute DMA queues and enable them (CIK).
 521  * Returns 0 for success, error for failure.
 522  */
 523 static int cik_sdma_rlc_resume(struct amdgpu_device *adev)
 524 {
 525         /* XXX todo */
 526         return 0;
 527 }
 528
 529 /**
 530  * cik_sdma_load_microcode - load the sDMA ME ucode
 531  *
 532  * @adev: amdgpu_device pointer
 533  *
 534  * Loads the sDMA0/1 ucode.
 535  * Returns 0 for success, -EINVAL if the ucode is not available.
 536  */
 537 static int cik_sdma_load_microcode(struct amdgpu_device *adev)
 538 {
 539         const struct sdma_firmware_header_v1_0 *hdr;
 540         const __le32 *fw_data;
 541         u32 fw_size;
 542         int i, j;
 543
 544         /* halt the MEs */
 545         cik_sdma_enable(adev, false);
 546
 547         for (i = 0; i < adev->sdma.num_instances; i++) {
 548                 if (!adev->sdma.instance[i].fw)
 549                         return -EINVAL;
 550                 hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma.instance[i].fw->data;
 551                 amdgpu_ucode_print_sdma_hdr(&hdr->header);
 552                 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
 553                 adev->sdma.instance[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
 554                 adev->sdma.instance[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
 555                 if (adev->sdma.instance[i].feature_version >= 20)
 556                         adev->sdma.instance[i].burst_nop = true;
 557                 fw_data = (const __le32 *)
 558                         (adev->sdma.instance[i].fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
 559                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], 0);
 560                 for (j = 0; j < fw_size; j++)
 561                         WREG32(mmSDMA0_UCODE_DATA + sdma_offsets[i], le32_to_cpup(fw_data++));
 562                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], adev->sdma.instance[i].fw_version);
 563         }
 564
 565         return 0;
 566 }
 567
 568 /**
 569  * cik_sdma_start - setup and start the async dma engines
 570  *
 571  * @adev: amdgpu_device pointer
 572  *
 573  * Set up the DMA engines and enable them (CIK).
 574  * Returns 0 for success, error for failure.
 575  */
 576 static int cik_sdma_start(struct amdgpu_device *adev)
 577 {
 578         int r;
 579
 580         r = cik_sdma_load_microcode(adev);
 581         if (r)
 582                 return r;
 583
 584         /* halt the engine before programing */
 585         cik_sdma_enable(adev, false);
 586         /* enable sdma ring preemption */
 587         cik_ctx_switch_enable(adev, true);
 588
 589         /* start the gfx rings and rlc compute queues */
 590         r = cik_sdma_gfx_resume(adev);
 591         if (r)
 592                 return r;
 593         r = cik_sdma_rlc_resume(adev);
 594         if (r)
 595                 return r;
 596
 597         return 0;
 598 }
 599
 600 /**
 601  * cik_sdma_ring_test_ring - simple async dma engine test
 602  *
 603  * @ring: amdgpu_ring structure holding ring information
 604  *
 605  * Test the DMA engine by writing using it to write an
 606  * value to memory. (CIK).
 607  * Returns 0 for success, error for failure.
 608  */
 609 static int cik_sdma_ring_test_ring(struct amdgpu_ring *ring)
 610 {
 611         struct amdgpu_device *adev = ring->adev;
 612         unsigned i;
 613         unsigned index;
 614         int r;
 615         u32 tmp;
 616         u64 gpu_addr;
 617
 618         r = amdgpu_device_wb_get(adev, &index);
 619         if (r)
 620                 return r;
 621
 622         gpu_addr = adev->wb.gpu_addr + (index * 4);
 623         tmp = 0xCAFEDEAD;
 624         adev->wb.wb[index] = cpu_to_le32(tmp);
 625
 626         r = amdgpu_ring_alloc(ring, 5);
 627         if (r)
 628                 goto error_free_wb;
 629
 630         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0));
 631         amdgpu_ring_write(ring, lower_32_bits(gpu_addr));
 632         amdgpu_ring_write(ring, upper_32_bits(gpu_addr));
 633         amdgpu_ring_write(ring, 1); /* number of DWs to follow */
 634         amdgpu_ring_write(ring, 0xDEADBEEF);
 635         amdgpu_ring_commit(ring);
 636
 637         for (i = 0; i < adev->usec_timeout; i++) {
 638                 tmp = le32_to_cpu(adev->wb.wb[index]);
 639                 if (tmp == 0xDEADBEEF)
 640                         break;
 641                 udelay(1);
 642         }
 643
 644         if (i >= adev->usec_timeout)
 645                 r = -ETIMEDOUT;
 646
 647 error_free_wb:
 648         amdgpu_device_wb_free(adev, index);
 649         return r;
 650 }
 651
 652 /**
 653  * cik_sdma_ring_test_ib - test an IB on the DMA engine
 654  *
 655  * @ring: amdgpu_ring structure holding ring information
 656  * @timeout: timeout value in jiffies, or MAX_SCHEDULE_TIMEOUT
 657  *
 658  * Test a simple IB in the DMA ring (CIK).
 659  * Returns 0 on success, error on failure.
 660  */
 661 static int cik_sdma_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 662 {
 663         struct amdgpu_device *adev = ring->adev;
 664         struct amdgpu_ib ib;
 665         struct dma_fence *f = NULL;
 666         unsigned index;
 667         u32 tmp = 0;
 668         u64 gpu_addr;
 669         long r;
 670
 671         r = amdgpu_device_wb_get(adev, &index);
 672         if (r)
 673                 return r;
 674
 675         gpu_addr = adev->wb.gpu_addr + (index * 4);
 676         tmp = 0xCAFEDEAD;
 677         adev->wb.wb[index] = cpu_to_le32(tmp);
 678         memset(&ib, 0, sizeof(ib));
 679         r = amdgpu_ib_get(adev, NULL, 256,
 680                                         AMDGPU_IB_POOL_DIRECT, &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_pte - 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_pte - 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_pte_pde - 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_ring_pad_ib - pad the IB to the required number of dw
 802  *
 803  * @ring: amdgpu_ring structure holding ring information
 804  * @ib: indirect buffer to fill with padding
 805  *
 806  */
 807 static void cik_sdma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib)
 808 {
 809         struct amdgpu_sdma_instance *sdma = amdgpu_sdma_get_instance_from_ring(ring);
 810         u32 pad_count;
 811         int i;
 812
 813         pad_count = (-ib->length_dw) & 7;
 814         for (i = 0; i < pad_count; i++)
 815                 if (sdma && sdma->burst_nop && (i == 0))
 816                         ib->ptr[ib->length_dw++] =
 817                                         SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0) |
 818                                         SDMA_NOP_COUNT(pad_count - 1);
 819                 else
 820                         ib->ptr[ib->length_dw++] =
 821                                         SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0);
 822 }
 823
 824 /**
 825  * cik_sdma_ring_emit_pipeline_sync - sync the pipeline
 826  *
 827  * @ring: amdgpu_ring pointer
 828  *
 829  * Make sure all previous operations are completed (CIK).
 830  */
 831 static void cik_sdma_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
 832 {
 833         uint32_t seq = ring->fence_drv.sync_seq;
 834         uint64_t addr = ring->fence_drv.gpu_addr;
 835
 836         /* wait for idle */
 837         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0,
 838                                             SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 839                                             SDMA_POLL_REG_MEM_EXTRA_FUNC(3) | /* equal */
 840                                             SDMA_POLL_REG_MEM_EXTRA_M));
 841         amdgpu_ring_write(ring, addr & 0xfffffffc);
 842         amdgpu_ring_write(ring, upper_32_bits(addr) & 0xffffffff);
 843         amdgpu_ring_write(ring, seq); /* reference */
 844         amdgpu_ring_write(ring, 0xffffffff); /* mask */
 845         amdgpu_ring_write(ring, (0xfff << 16) | 4); /* retry count, poll interval */
 846 }
 847
 848 /**
 849  * cik_sdma_ring_emit_vm_flush - cik vm flush using sDMA
 850  *
 851  * @ring: amdgpu_ring pointer
 852  * @vmid: vmid number to use
 853  * @pd_addr: address
 854  *
 855  * Update the page table base and flush the VM TLB
 856  * using sDMA (CIK).
 857  */
 858 static void cik_sdma_ring_emit_vm_flush(struct amdgpu_ring *ring,
 859                                         unsigned vmid, uint64_t pd_addr)
 860 {
 861         u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 862                           SDMA_POLL_REG_MEM_EXTRA_FUNC(0)); /* always */
 863
 864         amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
 865
 866         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
 867         amdgpu_ring_write(ring, mmVM_INVALIDATE_REQUEST << 2);
 868         amdgpu_ring_write(ring, 0);
 869         amdgpu_ring_write(ring, 0); /* reference */
 870         amdgpu_ring_write(ring, 0); /* mask */
 871         amdgpu_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
 872 }
 873
 874 static void cik_sdma_ring_emit_wreg(struct amdgpu_ring *ring,
 875                                     uint32_t reg, uint32_t val)
 876 {
 877         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 878         amdgpu_ring_write(ring, reg);
 879         amdgpu_ring_write(ring, val);
 880 }
 881
 882 static void cik_enable_sdma_mgcg(struct amdgpu_device *adev,
 883                                  bool enable)
 884 {
 885         u32 orig, data;
 886
 887         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) {
 888                 WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, 0x00000100);
 889                 WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, 0x00000100);
 890         } else {
 891                 orig = data = RREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET);
 892                 data |= 0xff000000;
 893                 if (data != orig)
 894                         WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, data);
 895
 896                 orig = data = RREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET);
 897                 data |= 0xff000000;
 898                 if (data != orig)
 899                         WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, data);
 900         }
 901 }
 902
 903 static void cik_enable_sdma_mgls(struct amdgpu_device *adev,
 904                                  bool enable)
 905 {
 906         u32 orig, data;
 907
 908         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_LS)) {
 909                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET);
 910                 data |= 0x100;
 911                 if (orig != data)
 912                         WREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET, data);
 913
 914                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET);
 915                 data |= 0x100;
 916                 if (orig != data)
 917                         WREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET, data);
 918         } else {
 919                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET);
 920                 data &= ~0x100;
 921                 if (orig != data)
 922                         WREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET, data);
 923
 924                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET);
 925                 data &= ~0x100;
 926                 if (orig != data)
 927                         WREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET, data);
 928         }
 929 }
 930
 931 static int cik_sdma_early_init(void *handle)
 932 {
 933         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 934
 935         adev->sdma.num_instances = SDMA_MAX_INSTANCE;
 936
 937         cik_sdma_set_ring_funcs(adev);
 938         cik_sdma_set_irq_funcs(adev);
 939         cik_sdma_set_buffer_funcs(adev);
 940         cik_sdma_set_vm_pte_funcs(adev);
 941
 942         return 0;
 943 }
 944
 945 static int cik_sdma_sw_init(void *handle)
 946 {
 947         struct amdgpu_ring *ring;
 948         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 949         int r, i;
 950
 951         r = cik_sdma_init_microcode(adev);
 952         if (r) {
 953                 DRM_ERROR("Failed to load sdma firmware!\n");
 954                 return r;
 955         }
 956
 957         /* SDMA trap event */
 958         r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 224,
 959                               &adev->sdma.trap_irq);
 960         if (r)
 961                 return r;
 962
 963         /* SDMA Privileged inst */
 964         r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 241,
 965                               &adev->sdma.illegal_inst_irq);
 966         if (r)
 967                 return r;
 968
 969         /* SDMA Privileged inst */
 970         r = amdgpu_irq_add_id(adev, AMDGPU_IRQ_CLIENTID_LEGACY, 247,
 971                               &adev->sdma.illegal_inst_irq);
 972         if (r)
 973                 return r;
 974
 975         for (i = 0; i < adev->sdma.num_instances; i++) {
 976                 ring = &adev->sdma.instance[i].ring;
 977                 ring->ring_obj = NULL;
 978                 sprintf(ring->name, "sdma%d", i);
 979                 r = amdgpu_ring_init(adev, ring, 1024,
 980                                      &adev->sdma.trap_irq,
 981                                      (i == 0) ? AMDGPU_SDMA_IRQ_INSTANCE0 :
 982                                      AMDGPU_SDMA_IRQ_INSTANCE1,
 983                                      AMDGPU_RING_PRIO_DEFAULT, NULL);
 984                 if (r)
 985                         return r;
 986         }
 987
 988         return r;
 989 }
 990
 991 static int cik_sdma_sw_fini(void *handle)
 992 {
 993         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 994         int i;
 995
 996         for (i = 0; i < adev->sdma.num_instances; i++)
 997                 amdgpu_ring_fini(&adev->sdma.instance[i].ring);
 998
 999         cik_sdma_free_microcode(adev);
1000         return 0;
1001 }
1002
1003 static int cik_sdma_hw_init(void *handle)
1004 {
1005         int r;
1006         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1007
1008         r = cik_sdma_start(adev);
1009         if (r)
1010                 return r;
1011
1012         return r;
1013 }
1014
1015 static int cik_sdma_hw_fini(void *handle)
1016 {
1017         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1018
1019         cik_ctx_switch_enable(adev, false);
1020         cik_sdma_enable(adev, false);
1021
1022         return 0;
1023 }
1024
1025 static int cik_sdma_suspend(void *handle)
1026 {
1027         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1028
1029         return cik_sdma_hw_fini(adev);
1030 }
1031
1032 static int cik_sdma_resume(void *handle)
1033 {
1034         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1035
1036         cik_sdma_soft_reset(handle);
1037
1038         return cik_sdma_hw_init(adev);
1039 }
1040
1041 static bool cik_sdma_is_idle(void *handle)
1042 {
1043         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1044         u32 tmp = RREG32(mmSRBM_STATUS2);
1045
1046         if (tmp & (SRBM_STATUS2__SDMA_BUSY_MASK |
1047                                 SRBM_STATUS2__SDMA1_BUSY_MASK))
1048             return false;
1049
1050         return true;
1051 }
1052
1053 static int cik_sdma_wait_for_idle(void *handle)
1054 {
1055         unsigned i;
1056         u32 tmp;
1057         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1058
1059         for (i = 0; i < adev->usec_timeout; i++) {
1060                 tmp = RREG32(mmSRBM_STATUS2) & (SRBM_STATUS2__SDMA_BUSY_MASK |
1061                                 SRBM_STATUS2__SDMA1_BUSY_MASK);
1062
1063                 if (!tmp)
1064                         return 0;
1065                 udelay(1);
1066         }
1067         return -ETIMEDOUT;
1068 }
1069
1070 static int cik_sdma_soft_reset(void *handle)
1071 {
1072         u32 srbm_soft_reset = 0;
1073         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1074         u32 tmp;
1075
1076         /* sdma0 */
1077         tmp = RREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET);
1078         tmp |= SDMA0_F32_CNTL__HALT_MASK;
1079         WREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET, tmp);
1080         srbm_soft_reset |= SRBM_SOFT_RESET__SOFT_RESET_SDMA_MASK;
1081
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         if (srbm_soft_reset) {
1089                 tmp = RREG32(mmSRBM_SOFT_RESET);
1090                 tmp |= srbm_soft_reset;
1091                 dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp);
1092                 WREG32(mmSRBM_SOFT_RESET, tmp);
1093                 tmp = RREG32(mmSRBM_SOFT_RESET);
1094
1095                 udelay(50);
1096
1097                 tmp &= ~srbm_soft_reset;
1098                 WREG32(mmSRBM_SOFT_RESET, tmp);
1099                 tmp = RREG32(mmSRBM_SOFT_RESET);
1100
1101                 /* Wait a little for things to settle down */
1102                 udelay(50);
1103         }
1104
1105         return 0;
1106 }
1107
1108 static int cik_sdma_set_trap_irq_state(struct amdgpu_device *adev,
1109                                        struct amdgpu_irq_src *src,
1110                                        unsigned type,
1111                                        enum amdgpu_interrupt_state state)
1112 {
1113         u32 sdma_cntl;
1114
1115         switch (type) {
1116         case AMDGPU_SDMA_IRQ_INSTANCE0:
1117                 switch (state) {
1118                 case AMDGPU_IRQ_STATE_DISABLE:
1119                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET);
1120                         sdma_cntl &= ~SDMA0_CNTL__TRAP_ENABLE_MASK;
1121                         WREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET, sdma_cntl);
1122                         break;
1123                 case AMDGPU_IRQ_STATE_ENABLE:
1124                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET);
1125                         sdma_cntl |= SDMA0_CNTL__TRAP_ENABLE_MASK;
1126                         WREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET, sdma_cntl);
1127                         break;
1128                 default:
1129                         break;
1130                 }
1131                 break;
1132         case AMDGPU_SDMA_IRQ_INSTANCE1:
1133                 switch (state) {
1134                 case AMDGPU_IRQ_STATE_DISABLE:
1135                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET);
1136                         sdma_cntl &= ~SDMA0_CNTL__TRAP_ENABLE_MASK;
1137                         WREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET, sdma_cntl);
1138                         break;
1139                 case AMDGPU_IRQ_STATE_ENABLE:
1140                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET);
1141                         sdma_cntl |= SDMA0_CNTL__TRAP_ENABLE_MASK;
1142                         WREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET, sdma_cntl);
1143                         break;
1144                 default:
1145                         break;
1146                 }
1147                 break;
1148         default:
1149                 break;
1150         }
1151         return 0;
1152 }
1153
1154 static int cik_sdma_process_trap_irq(struct amdgpu_device *adev,
1155                                      struct amdgpu_irq_src *source,
1156                                      struct amdgpu_iv_entry *entry)
1157 {
1158         u8 instance_id, queue_id;
1159
1160         instance_id = (entry->ring_id & 0x3) >> 0;
1161         queue_id = (entry->ring_id & 0xc) >> 2;
1162         DRM_DEBUG("IH: SDMA trap\n");
1163         switch (instance_id) {
1164         case 0:
1165                 switch (queue_id) {
1166                 case 0:
1167                         amdgpu_fence_process(&adev->sdma.instance[0].ring);
1168                         break;
1169                 case 1:
1170                         /* XXX compute */
1171                         break;
1172                 case 2:
1173                         /* XXX compute */
1174                         break;
1175                 }
1176                 break;
1177         case 1:
1178                 switch (queue_id) {
1179                 case 0:
1180                         amdgpu_fence_process(&adev->sdma.instance[1].ring);
1181                         break;
1182                 case 1:
1183                         /* XXX compute */
1184                         break;
1185                 case 2:
1186                         /* XXX compute */
1187                         break;
1188                 }
1189                 break;
1190         }
1191
1192         return 0;
1193 }
1194
1195 static int cik_sdma_process_illegal_inst_irq(struct amdgpu_device *adev,
1196                                              struct amdgpu_irq_src *source,
1197                                              struct amdgpu_iv_entry *entry)
1198 {
1199         u8 instance_id;
1200
1201         DRM_ERROR("Illegal instruction in SDMA command stream\n");
1202         instance_id = (entry->ring_id & 0x3) >> 0;
1203         drm_sched_fault(&adev->sdma.instance[instance_id].ring.sched);
1204         return 0;
1205 }
1206
1207 static int cik_sdma_set_clockgating_state(void *handle,
1208                                           enum amd_clockgating_state state)
1209 {
1210         bool gate = false;
1211         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1212
1213         if (state == AMD_CG_STATE_GATE)
1214                 gate = true;
1215
1216         cik_enable_sdma_mgcg(adev, gate);
1217         cik_enable_sdma_mgls(adev, gate);
1218
1219         return 0;
1220 }
1221
1222 static int cik_sdma_set_powergating_state(void *handle,
1223                                           enum amd_powergating_state state)
1224 {
1225         return 0;
1226 }
1227
1228 static const struct amd_ip_funcs cik_sdma_ip_funcs = {
1229         .name = "cik_sdma",
1230         .early_init = cik_sdma_early_init,
1231         .late_init = NULL,
1232         .sw_init = cik_sdma_sw_init,
1233         .sw_fini = cik_sdma_sw_fini,
1234         .hw_init = cik_sdma_hw_init,
1235         .hw_fini = cik_sdma_hw_fini,
1236         .suspend = cik_sdma_suspend,
1237         .resume = cik_sdma_resume,
1238         .is_idle = cik_sdma_is_idle,
1239         .wait_for_idle = cik_sdma_wait_for_idle,
1240         .soft_reset = cik_sdma_soft_reset,
1241         .set_clockgating_state = cik_sdma_set_clockgating_state,
1242         .set_powergating_state = cik_sdma_set_powergating_state,
1243 };
1244
1245 static const struct amdgpu_ring_funcs cik_sdma_ring_funcs = {
1246         .type = AMDGPU_RING_TYPE_SDMA,
1247         .align_mask = 0xf,
1248         .nop = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0),
1249         .support_64bit_ptrs = false,
1250         .get_rptr = cik_sdma_ring_get_rptr,
1251         .get_wptr = cik_sdma_ring_get_wptr,
1252         .set_wptr = cik_sdma_ring_set_wptr,
1253         .emit_frame_size =
1254                 6 + /* cik_sdma_ring_emit_hdp_flush */
1255                 3 + /* hdp invalidate */
1256                 6 + /* cik_sdma_ring_emit_pipeline_sync */
1257                 CIK_FLUSH_GPU_TLB_NUM_WREG * 3 + 6 + /* cik_sdma_ring_emit_vm_flush */
1258                 9 + 9 + 9, /* cik_sdma_ring_emit_fence x3 for user fence, vm fence */
1259         .emit_ib_size = 7 + 4, /* cik_sdma_ring_emit_ib */
1260         .emit_ib = cik_sdma_ring_emit_ib,
1261         .emit_fence = cik_sdma_ring_emit_fence,
1262         .emit_pipeline_sync = cik_sdma_ring_emit_pipeline_sync,
1263         .emit_vm_flush = cik_sdma_ring_emit_vm_flush,
1264         .emit_hdp_flush = cik_sdma_ring_emit_hdp_flush,
1265         .test_ring = cik_sdma_ring_test_ring,
1266         .test_ib = cik_sdma_ring_test_ib,
1267         .insert_nop = cik_sdma_ring_insert_nop,
1268         .pad_ib = cik_sdma_ring_pad_ib,
1269         .emit_wreg = cik_sdma_ring_emit_wreg,
1270 };
1271
1272 static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev)
1273 {
1274         int i;
1275
1276         for (i = 0; i < adev->sdma.num_instances; i++) {
1277                 adev->sdma.instance[i].ring.funcs = &cik_sdma_ring_funcs;
1278                 adev->sdma.instance[i].ring.me = i;
1279         }
1280 }
1281
1282 static const struct amdgpu_irq_src_funcs cik_sdma_trap_irq_funcs = {
1283         .set = cik_sdma_set_trap_irq_state,
1284         .process = cik_sdma_process_trap_irq,
1285 };
1286
1287 static const struct amdgpu_irq_src_funcs cik_sdma_illegal_inst_irq_funcs = {
1288         .process = cik_sdma_process_illegal_inst_irq,
1289 };
1290
1291 static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev)
1292 {
1293         adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST;
1294         adev->sdma.trap_irq.funcs = &cik_sdma_trap_irq_funcs;
1295         adev->sdma.illegal_inst_irq.funcs = &cik_sdma_illegal_inst_irq_funcs;
1296 }
1297
1298 /**
1299  * cik_sdma_emit_copy_buffer - copy buffer using the sDMA engine
1300  *
1301  * @ib: indirect buffer to copy to
1302  * @src_offset: src GPU address
1303  * @dst_offset: dst GPU address
1304  * @byte_count: number of bytes to xfer
1305  * @tmz: is this a secure operation
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                                       bool tmz)
1316 {
1317         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY, SDMA_COPY_SUB_OPCODE_LINEAR, 0);
1318         ib->ptr[ib->length_dw++] = byte_count;
1319         ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */
1320         ib->ptr[ib->length_dw++] = lower_32_bits(src_offset);
1321         ib->ptr[ib->length_dw++] = upper_32_bits(src_offset);
1322         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
1323         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset);
1324 }
1325
1326 /**
1327  * cik_sdma_emit_fill_buffer - fill buffer using the sDMA engine
1328  *
1329  * @ib: indirect buffer to fill
1330  * @src_data: value to write to buffer
1331  * @dst_offset: dst GPU address
1332  * @byte_count: number of bytes to xfer
1333  *
1334  * Fill GPU buffers using the DMA engine (CIK).
1335  */
1336 static void cik_sdma_emit_fill_buffer(struct amdgpu_ib *ib,
1337                                       uint32_t src_data,
1338                                       uint64_t dst_offset,
1339                                       uint32_t byte_count)
1340 {
1341         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_CONSTANT_FILL, 0, 0);
1342         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
1343         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset);
1344         ib->ptr[ib->length_dw++] = src_data;
1345         ib->ptr[ib->length_dw++] = byte_count;
1346 }
1347
1348 static const struct amdgpu_buffer_funcs cik_sdma_buffer_funcs = {
1349         .copy_max_bytes = 0x1fffff,
1350         .copy_num_dw = 7,
1351         .emit_copy_buffer = cik_sdma_emit_copy_buffer,
1352
1353         .fill_max_bytes = 0x1fffff,
1354         .fill_num_dw = 5,
1355         .emit_fill_buffer = cik_sdma_emit_fill_buffer,
1356 };
1357
1358 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev)
1359 {
1360         adev->mman.buffer_funcs = &cik_sdma_buffer_funcs;
1361         adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
1362 }
1363
1364 static const struct amdgpu_vm_pte_funcs cik_sdma_vm_pte_funcs = {
1365         .copy_pte_num_dw = 7,
1366         .copy_pte = cik_sdma_vm_copy_pte,
1367
1368         .write_pte = cik_sdma_vm_write_pte,
1369         .set_pte_pde = cik_sdma_vm_set_pte_pde,
1370 };
1371
1372 static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev)
1373 {
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                 adev->vm_manager.vm_pte_scheds[i] =
1379                         &adev->sdma.instance[i].ring.sched;
1380         }
1381         adev->vm_manager.vm_pte_num_scheds = adev->sdma.num_instances;
1382 }
1383
1384 const struct amdgpu_ip_block_version cik_sdma_ip_block =
1385 {
1386         .type = AMD_IP_BLOCK_TYPE_SDMA,
1387         .major = 2,
1388         .minor = 0,
1389         .rev = 0,
1390         .funcs = &cik_sdma_ip_funcs,
1391 };