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

   1 /*
   2  * Copyright 2013 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Alex Deucher
  23  */
  24 #include <linux/firmware.h>
  25 #include <drm/drmP.h>
  26 #include "amdgpu.h"
  27 #include "amdgpu_ucode.h"
  28 #include "amdgpu_trace.h"
  29 #include "cikd.h"
  30 #include "cik.h"
  31
  32 #include "bif/bif_4_1_d.h"
  33 #include "bif/bif_4_1_sh_mask.h"
  34
  35 #include "gca/gfx_7_2_d.h"
  36 #include "gca/gfx_7_2_enum.h"
  37 #include "gca/gfx_7_2_sh_mask.h"
  38
  39 #include "gmc/gmc_7_1_d.h"
  40 #include "gmc/gmc_7_1_sh_mask.h"
  41
  42 #include "oss/oss_2_0_d.h"
  43 #include "oss/oss_2_0_sh_mask.h"
  44
  45 static const u32 sdma_offsets[SDMA_MAX_INSTANCE] =
  46 {
  47         SDMA0_REGISTER_OFFSET,
  48         SDMA1_REGISTER_OFFSET
  49 };
  50
  51 static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev);
  52 static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev);
  53 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev);
  54 static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev);
  55 static int cik_sdma_soft_reset(void *handle);
  56
  57 MODULE_FIRMWARE("radeon/bonaire_sdma.bin");
  58 MODULE_FIRMWARE("radeon/bonaire_sdma1.bin");
  59 MODULE_FIRMWARE("radeon/hawaii_sdma.bin");
  60 MODULE_FIRMWARE("radeon/hawaii_sdma1.bin");
  61 MODULE_FIRMWARE("radeon/kaveri_sdma.bin");
  62 MODULE_FIRMWARE("radeon/kaveri_sdma1.bin");
  63 MODULE_FIRMWARE("radeon/kabini_sdma.bin");
  64 MODULE_FIRMWARE("radeon/kabini_sdma1.bin");
  65 MODULE_FIRMWARE("radeon/mullins_sdma.bin");
  66 MODULE_FIRMWARE("radeon/mullins_sdma1.bin");
  67
  68 u32 amdgpu_cik_gpu_check_soft_reset(struct amdgpu_device *adev);
  69
  70
  71 static void cik_sdma_free_microcode(struct amdgpu_device *adev)
  72 {
  73         int i;
  74         for (i = 0; i < adev->sdma.num_instances; i++) {
  75                         release_firmware(adev->sdma.instance[i].fw);
  76                         adev->sdma.instance[i].fw = NULL;
  77         }
  78 }
  79
  80 /*
  81  * sDMA - System DMA
  82  * Starting with CIK, the GPU has new asynchronous
  83  * DMA engines.  These engines are used for compute
  84  * and gfx.  There are two DMA engines (SDMA0, SDMA1)
  85  * and each one supports 1 ring buffer used for gfx
  86  * and 2 queues used for compute.
  87  *
  88  * The programming model is very similar to the CP
  89  * (ring buffer, IBs, etc.), but sDMA has it's own
  90  * packet format that is different from the PM4 format
  91  * used by the CP. sDMA supports copying data, writing
  92  * embedded data, solid fills, and a number of other
  93  * things.  It also has support for tiling/detiling of
  94  * buffers.
  95  */
  96
  97 /**
  98  * cik_sdma_init_microcode - load ucode images from disk
  99  *
 100  * @adev: amdgpu_device pointer
 101  *
 102  * Use the firmware interface to load the ucode images into
 103  * the driver (not loaded into hw).
 104  * Returns 0 on success, error on failure.
 105  */
 106 static int cik_sdma_init_microcode(struct amdgpu_device *adev)
 107 {
 108         const char *chip_name;
 109         char fw_name[30];
 110         int err = 0, i;
 111
 112         DRM_DEBUG("\n");
 113
 114         switch (adev->asic_type) {
 115         case CHIP_BONAIRE:
 116                 chip_name = "bonaire";
 117                 break;
 118         case CHIP_HAWAII:
 119                 chip_name = "hawaii";
 120                 break;
 121         case CHIP_KAVERI:
 122                 chip_name = "kaveri";
 123                 break;
 124         case CHIP_KABINI:
 125                 chip_name = "kabini";
 126                 break;
 127         case CHIP_MULLINS:
 128                 chip_name = "mullins";
 129                 break;
 130         default: BUG();
 131         }
 132
 133         for (i = 0; i < adev->sdma.num_instances; i++) {
 134                 if (i == 0)
 135                         snprintf(fw_name, sizeof(fw_name), "radeon/%s_sdma.bin", chip_name);
 136                 else
 137                         snprintf(fw_name, sizeof(fw_name), "radeon/%s_sdma1.bin", chip_name);
 138                 err = request_firmware(&adev->sdma.instance[i].fw, fw_name, adev->dev);
 139                 if (err)
 140                         goto out;
 141                 err = amdgpu_ucode_validate(adev->sdma.instance[i].fw);
 142         }
 143 out:
 144         if (err) {
 145                 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         u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1;
 181
 182         return (RREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[me]) & 0x3fffc) >> 2;
 183 }
 184
 185 /**
 186  * cik_sdma_ring_set_wptr - commit the write pointer
 187  *
 188  * @ring: amdgpu ring pointer
 189  *
 190  * Write the wptr back to the hardware (CIK+).
 191  */
 192 static void cik_sdma_ring_set_wptr(struct amdgpu_ring *ring)
 193 {
 194         struct amdgpu_device *adev = ring->adev;
 195         u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1;
 196
 197         WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[me],
 198                         (lower_32_bits(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_get_sdma_instance(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  * @ib: IB object to schedule
 219  *
 220  * Schedule an IB in the DMA ring (CIK).
 221  */
 222 static void cik_sdma_ring_emit_ib(struct amdgpu_ring *ring,
 223                                   struct amdgpu_ib *ib,
 224                                   unsigned vmid, bool ctx_switch)
 225 {
 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 == &ring->adev->sdma.instance[0].ring)
 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->ready = false;
 322         sdma1->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->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_ring(ring);
 507                 if (r) {
 508                         ring->ready = false;
 509                         return r;
 510                 }
 511
 512                 if (adev->mman.buffer_funcs_ring == ring)
 513                         amdgpu_ttm_set_buffer_funcs_status(adev, true);
 514         }
 515
 516         return 0;
 517 }
 518
 519 /**
 520  * cik_sdma_rlc_resume - setup and start the async dma engines
 521  *
 522  * @adev: amdgpu_device pointer
 523  *
 524  * Set up the compute DMA queues and enable them (CIK).
 525  * Returns 0 for success, error for failure.
 526  */
 527 static int cik_sdma_rlc_resume(struct amdgpu_device *adev)
 528 {
 529         /* XXX todo */
 530         return 0;
 531 }
 532
 533 /**
 534  * cik_sdma_load_microcode - load the sDMA ME ucode
 535  *
 536  * @adev: amdgpu_device pointer
 537  *
 538  * Loads the sDMA0/1 ucode.
 539  * Returns 0 for success, -EINVAL if the ucode is not available.
 540  */
 541 static int cik_sdma_load_microcode(struct amdgpu_device *adev)
 542 {
 543         const struct sdma_firmware_header_v1_0 *hdr;
 544         const __le32 *fw_data;
 545         u32 fw_size;
 546         int i, j;
 547
 548         /* halt the MEs */
 549         cik_sdma_enable(adev, false);
 550
 551         for (i = 0; i < adev->sdma.num_instances; i++) {
 552                 if (!adev->sdma.instance[i].fw)
 553                         return -EINVAL;
 554                 hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma.instance[i].fw->data;
 555                 amdgpu_ucode_print_sdma_hdr(&hdr->header);
 556                 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
 557                 adev->sdma.instance[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
 558                 adev->sdma.instance[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
 559                 if (adev->sdma.instance[i].feature_version >= 20)
 560                         adev->sdma.instance[i].burst_nop = true;
 561                 fw_data = (const __le32 *)
 562                         (adev->sdma.instance[i].fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
 563                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], 0);
 564                 for (j = 0; j < fw_size; j++)
 565                         WREG32(mmSDMA0_UCODE_DATA + sdma_offsets[i], le32_to_cpup(fw_data++));
 566                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], adev->sdma.instance[i].fw_version);
 567         }
 568
 569         return 0;
 570 }
 571
 572 /**
 573  * cik_sdma_start - setup and start the async dma engines
 574  *
 575  * @adev: amdgpu_device pointer
 576  *
 577  * Set up the DMA engines and enable them (CIK).
 578  * Returns 0 for success, error for failure.
 579  */
 580 static int cik_sdma_start(struct amdgpu_device *adev)
 581 {
 582         int r;
 583
 584         r = cik_sdma_load_microcode(adev);
 585         if (r)
 586                 return r;
 587
 588         /* halt the engine before programing */
 589         cik_sdma_enable(adev, false);
 590         /* enable sdma ring preemption */
 591         cik_ctx_switch_enable(adev, true);
 592
 593         /* start the gfx rings and rlc compute queues */
 594         r = cik_sdma_gfx_resume(adev);
 595         if (r)
 596                 return r;
 597         r = cik_sdma_rlc_resume(adev);
 598         if (r)
 599                 return r;
 600
 601         return 0;
 602 }
 603
 604 /**
 605  * cik_sdma_ring_test_ring - simple async dma engine test
 606  *
 607  * @ring: amdgpu_ring structure holding ring information
 608  *
 609  * Test the DMA engine by writing using it to write an
 610  * value to memory. (CIK).
 611  * Returns 0 for success, error for failure.
 612  */
 613 static int cik_sdma_ring_test_ring(struct amdgpu_ring *ring)
 614 {
 615         struct amdgpu_device *adev = ring->adev;
 616         unsigned i;
 617         unsigned index;
 618         int r;
 619         u32 tmp;
 620         u64 gpu_addr;
 621
 622         r = amdgpu_device_wb_get(adev, &index);
 623         if (r) {
 624                 dev_err(adev->dev, "(%d) failed to allocate wb slot\n", r);
 625                 return r;
 626         }
 627
 628         gpu_addr = adev->wb.gpu_addr + (index * 4);
 629         tmp = 0xCAFEDEAD;
 630         adev->wb.wb[index] = cpu_to_le32(tmp);
 631
 632         r = amdgpu_ring_alloc(ring, 5);
 633         if (r) {
 634                 DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
 635                 amdgpu_device_wb_free(adev, index);
 636                 return r;
 637         }
 638         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0));
 639         amdgpu_ring_write(ring, lower_32_bits(gpu_addr));
 640         amdgpu_ring_write(ring, upper_32_bits(gpu_addr));
 641         amdgpu_ring_write(ring, 1); /* number of DWs to follow */
 642         amdgpu_ring_write(ring, 0xDEADBEEF);
 643         amdgpu_ring_commit(ring);
 644
 645         for (i = 0; i < adev->usec_timeout; i++) {
 646                 tmp = le32_to_cpu(adev->wb.wb[index]);
 647                 if (tmp == 0xDEADBEEF)
 648                         break;
 649                 DRM_UDELAY(1);
 650         }
 651
 652         if (i < adev->usec_timeout) {
 653                 DRM_DEBUG("ring test on %d succeeded in %d usecs\n", ring->idx, i);
 654         } else {
 655                 DRM_ERROR("amdgpu: ring %d test failed (0x%08X)\n",
 656                           ring->idx, tmp);
 657                 r = -EINVAL;
 658         }
 659         amdgpu_device_wb_free(adev, index);
 660
 661         return r;
 662 }
 663
 664 /**
 665  * cik_sdma_ring_test_ib - test an IB on the DMA engine
 666  *
 667  * @ring: amdgpu_ring structure holding ring information
 668  *
 669  * Test a simple IB in the DMA ring (CIK).
 670  * Returns 0 on success, error on failure.
 671  */
 672 static int cik_sdma_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 673 {
 674         struct amdgpu_device *adev = ring->adev;
 675         struct amdgpu_ib ib;
 676         struct dma_fence *f = NULL;
 677         unsigned index;
 678         u32 tmp = 0;
 679         u64 gpu_addr;
 680         long r;
 681
 682         r = amdgpu_device_wb_get(adev, &index);
 683         if (r) {
 684                 dev_err(adev->dev, "(%ld) failed to allocate wb slot\n", r);
 685                 return r;
 686         }
 687
 688         gpu_addr = adev->wb.gpu_addr + (index * 4);
 689         tmp = 0xCAFEDEAD;
 690         adev->wb.wb[index] = cpu_to_le32(tmp);
 691         memset(&ib, 0, sizeof(ib));
 692         r = amdgpu_ib_get(adev, NULL, 256, &ib);
 693         if (r) {
 694                 DRM_ERROR("amdgpu: failed to get ib (%ld).\n", r);
 695                 goto err0;
 696         }
 697
 698         ib.ptr[0] = SDMA_PACKET(SDMA_OPCODE_WRITE,
 699                                 SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 700         ib.ptr[1] = lower_32_bits(gpu_addr);
 701         ib.ptr[2] = upper_32_bits(gpu_addr);
 702         ib.ptr[3] = 1;
 703         ib.ptr[4] = 0xDEADBEEF;
 704         ib.length_dw = 5;
 705         r = amdgpu_ib_schedule(ring, 1, &ib, NULL, &f);
 706         if (r)
 707                 goto err1;
 708
 709         r = dma_fence_wait_timeout(f, false, timeout);
 710         if (r == 0) {
 711                 DRM_ERROR("amdgpu: IB test timed out\n");
 712                 r = -ETIMEDOUT;
 713                 goto err1;
 714         } else if (r < 0) {
 715                 DRM_ERROR("amdgpu: fence wait failed (%ld).\n", r);
 716                 goto err1;
 717         }
 718         tmp = le32_to_cpu(adev->wb.wb[index]);
 719         if (tmp == 0xDEADBEEF) {
 720                 DRM_DEBUG("ib test on ring %d succeeded\n", ring->idx);
 721                 r = 0;
 722         } else {
 723                 DRM_ERROR("amdgpu: ib test failed (0x%08X)\n", tmp);
 724                 r = -EINVAL;
 725         }
 726
 727 err1:
 728         amdgpu_ib_free(adev, &ib, NULL);
 729         dma_fence_put(f);
 730 err0:
 731         amdgpu_device_wb_free(adev, index);
 732         return r;
 733 }
 734
 735 /**
 736  * cik_sdma_vm_copy_pages - update PTEs by copying them from the GART
 737  *
 738  * @ib: indirect buffer to fill with commands
 739  * @pe: addr of the page entry
 740  * @src: src addr to copy from
 741  * @count: number of page entries to update
 742  *
 743  * Update PTEs by copying them from the GART using sDMA (CIK).
 744  */
 745 static void cik_sdma_vm_copy_pte(struct amdgpu_ib *ib,
 746                                  uint64_t pe, uint64_t src,
 747                                  unsigned count)
 748 {
 749         unsigned bytes = count * 8;
 750
 751         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY,
 752                 SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 753         ib->ptr[ib->length_dw++] = bytes;
 754         ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */
 755         ib->ptr[ib->length_dw++] = lower_32_bits(src);
 756         ib->ptr[ib->length_dw++] = upper_32_bits(src);
 757         ib->ptr[ib->length_dw++] = lower_32_bits(pe);
 758         ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 759 }
 760
 761 /**
 762  * cik_sdma_vm_write_pages - update PTEs by writing them manually
 763  *
 764  * @ib: indirect buffer to fill with commands
 765  * @pe: addr of the page entry
 766  * @value: dst addr to write into pe
 767  * @count: number of page entries to update
 768  * @incr: increase next addr by incr bytes
 769  *
 770  * Update PTEs by writing them manually using sDMA (CIK).
 771  */
 772 static void cik_sdma_vm_write_pte(struct amdgpu_ib *ib, uint64_t pe,
 773                                   uint64_t value, unsigned count,
 774                                   uint32_t incr)
 775 {
 776         unsigned ndw = count * 2;
 777
 778         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_WRITE,
 779                 SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
 780         ib->ptr[ib->length_dw++] = lower_32_bits(pe);
 781         ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 782         ib->ptr[ib->length_dw++] = ndw;
 783         for (; ndw > 0; ndw -= 2) {
 784                 ib->ptr[ib->length_dw++] = lower_32_bits(value);
 785                 ib->ptr[ib->length_dw++] = upper_32_bits(value);
 786                 value += incr;
 787         }
 788 }
 789
 790 /**
 791  * cik_sdma_vm_set_pages - update the page tables using sDMA
 792  *
 793  * @ib: indirect buffer to fill with commands
 794  * @pe: addr of the page entry
 795  * @addr: dst addr to write into pe
 796  * @count: number of page entries to update
 797  * @incr: increase next addr by incr bytes
 798  * @flags: access flags
 799  *
 800  * Update the page tables using sDMA (CIK).
 801  */
 802 static void cik_sdma_vm_set_pte_pde(struct amdgpu_ib *ib, uint64_t pe,
 803                                     uint64_t addr, unsigned count,
 804                                     uint32_t incr, uint64_t flags)
 805 {
 806         /* for physically contiguous pages (vram) */
 807         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_GENERATE_PTE_PDE, 0, 0);
 808         ib->ptr[ib->length_dw++] = lower_32_bits(pe); /* dst addr */
 809         ib->ptr[ib->length_dw++] = upper_32_bits(pe);
 810         ib->ptr[ib->length_dw++] = lower_32_bits(flags); /* mask */
 811         ib->ptr[ib->length_dw++] = upper_32_bits(flags);
 812         ib->ptr[ib->length_dw++] = lower_32_bits(addr); /* value */
 813         ib->ptr[ib->length_dw++] = upper_32_bits(addr);
 814         ib->ptr[ib->length_dw++] = incr; /* increment size */
 815         ib->ptr[ib->length_dw++] = 0;
 816         ib->ptr[ib->length_dw++] = count; /* number of entries */
 817 }
 818
 819 /**
 820  * cik_sdma_vm_pad_ib - pad the IB to the required number of dw
 821  *
 822  * @ib: indirect buffer to fill with padding
 823  *
 824  */
 825 static void cik_sdma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib)
 826 {
 827         struct amdgpu_sdma_instance *sdma = amdgpu_get_sdma_instance(ring);
 828         u32 pad_count;
 829         int i;
 830
 831         pad_count = (8 - (ib->length_dw & 0x7)) % 8;
 832         for (i = 0; i < pad_count; i++)
 833                 if (sdma && sdma->burst_nop && (i == 0))
 834                         ib->ptr[ib->length_dw++] =
 835                                         SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0) |
 836                                         SDMA_NOP_COUNT(pad_count - 1);
 837                 else
 838                         ib->ptr[ib->length_dw++] =
 839                                         SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0);
 840 }
 841
 842 /**
 843  * cik_sdma_ring_emit_pipeline_sync - sync the pipeline
 844  *
 845  * @ring: amdgpu_ring pointer
 846  *
 847  * Make sure all previous operations are completed (CIK).
 848  */
 849 static void cik_sdma_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
 850 {
 851         uint32_t seq = ring->fence_drv.sync_seq;
 852         uint64_t addr = ring->fence_drv.gpu_addr;
 853
 854         /* wait for idle */
 855         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0,
 856                                             SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 857                                             SDMA_POLL_REG_MEM_EXTRA_FUNC(3) | /* equal */
 858                                             SDMA_POLL_REG_MEM_EXTRA_M));
 859         amdgpu_ring_write(ring, addr & 0xfffffffc);
 860         amdgpu_ring_write(ring, upper_32_bits(addr) & 0xffffffff);
 861         amdgpu_ring_write(ring, seq); /* reference */
 862         amdgpu_ring_write(ring, 0xffffffff); /* mask */
 863         amdgpu_ring_write(ring, (0xfff << 16) | 4); /* retry count, poll interval */
 864 }
 865
 866 /**
 867  * cik_sdma_ring_emit_vm_flush - cik vm flush using sDMA
 868  *
 869  * @ring: amdgpu_ring pointer
 870  * @vm: amdgpu_vm pointer
 871  *
 872  * Update the page table base and flush the VM TLB
 873  * using sDMA (CIK).
 874  */
 875 static void cik_sdma_ring_emit_vm_flush(struct amdgpu_ring *ring,
 876                                         unsigned vmid, uint64_t pd_addr)
 877 {
 878         u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 879                           SDMA_POLL_REG_MEM_EXTRA_FUNC(0)); /* always */
 880
 881         amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
 882
 883         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
 884         amdgpu_ring_write(ring, mmVM_INVALIDATE_REQUEST << 2);
 885         amdgpu_ring_write(ring, 0);
 886         amdgpu_ring_write(ring, 0); /* reference */
 887         amdgpu_ring_write(ring, 0); /* mask */
 888         amdgpu_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
 889 }
 890
 891 static void cik_sdma_ring_emit_wreg(struct amdgpu_ring *ring,
 892                                     uint32_t reg, uint32_t val)
 893 {
 894         amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 895         amdgpu_ring_write(ring, reg);
 896         amdgpu_ring_write(ring, val);
 897 }
 898
 899 static void cik_enable_sdma_mgcg(struct amdgpu_device *adev,
 900                                  bool enable)
 901 {
 902         u32 orig, data;
 903
 904         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) {
 905                 WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, 0x00000100);
 906                 WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, 0x00000100);
 907         } else {
 908                 orig = data = RREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET);
 909                 data |= 0xff000000;
 910                 if (data != orig)
 911                         WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, data);
 912
 913                 orig = data = RREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET);
 914                 data |= 0xff000000;
 915                 if (data != orig)
 916                         WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, data);
 917         }
 918 }
 919
 920 static void cik_enable_sdma_mgls(struct amdgpu_device *adev,
 921                                  bool enable)
 922 {
 923         u32 orig, data;
 924
 925         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_LS)) {
 926                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET);
 927                 data |= 0x100;
 928                 if (orig != data)
 929                         WREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET, data);
 930
 931                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET);
 932                 data |= 0x100;
 933                 if (orig != data)
 934                         WREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET, data);
 935         } else {
 936                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET);
 937                 data &= ~0x100;
 938                 if (orig != data)
 939                         WREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET, data);
 940
 941                 orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET);
 942                 data &= ~0x100;
 943                 if (orig != data)
 944                         WREG32(mmSDMA0_POWER_CNTL + SDMA1_REGISTER_OFFSET, data);
 945         }
 946 }
 947
 948 static int cik_sdma_early_init(void *handle)
 949 {
 950         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 951
 952         adev->sdma.num_instances = SDMA_MAX_INSTANCE;
 953
 954         cik_sdma_set_ring_funcs(adev);
 955         cik_sdma_set_irq_funcs(adev);
 956         cik_sdma_set_buffer_funcs(adev);
 957         cik_sdma_set_vm_pte_funcs(adev);
 958
 959         return 0;
 960 }
 961
 962 static int cik_sdma_sw_init(void *handle)
 963 {
 964         struct amdgpu_ring *ring;
 965         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 966         int r, i;
 967
 968         r = cik_sdma_init_microcode(adev);
 969         if (r) {
 970                 DRM_ERROR("Failed to load sdma firmware!\n");
 971                 return r;
 972         }
 973
 974         /* SDMA trap event */
 975         r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, 224,
 976                               &adev->sdma.trap_irq);
 977         if (r)
 978                 return r;
 979
 980         /* SDMA Privileged inst */
 981         r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, 241,
 982                               &adev->sdma.illegal_inst_irq);
 983         if (r)
 984                 return r;
 985
 986         /* SDMA Privileged inst */
 987         r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, 247,
 988                               &adev->sdma.illegal_inst_irq);
 989         if (r)
 990                 return r;
 991
 992         for (i = 0; i < adev->sdma.num_instances; i++) {
 993                 ring = &adev->sdma.instance[i].ring;
 994                 ring->ring_obj = NULL;
 995                 sprintf(ring->name, "sdma%d", i);
 996                 r = amdgpu_ring_init(adev, ring, 1024,
 997                                      &adev->sdma.trap_irq,
 998                                      (i == 0) ?
 999                                      AMDGPU_SDMA_IRQ_TRAP0 :
1000                                      AMDGPU_SDMA_IRQ_TRAP1);
1001                 if (r)
1002                         return r;
1003         }
1004
1005         return r;
1006 }
1007
1008 static int cik_sdma_sw_fini(void *handle)
1009 {
1010         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1011         int i;
1012
1013         for (i = 0; i < adev->sdma.num_instances; i++)
1014                 amdgpu_ring_fini(&adev->sdma.instance[i].ring);
1015
1016         cik_sdma_free_microcode(adev);
1017         return 0;
1018 }
1019
1020 static int cik_sdma_hw_init(void *handle)
1021 {
1022         int r;
1023         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1024
1025         r = cik_sdma_start(adev);
1026         if (r)
1027                 return r;
1028
1029         return r;
1030 }
1031
1032 static int cik_sdma_hw_fini(void *handle)
1033 {
1034         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1035
1036         cik_ctx_switch_enable(adev, false);
1037         cik_sdma_enable(adev, false);
1038
1039         return 0;
1040 }
1041
1042 static int cik_sdma_suspend(void *handle)
1043 {
1044         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1045
1046         return cik_sdma_hw_fini(adev);
1047 }
1048
1049 static int cik_sdma_resume(void *handle)
1050 {
1051         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1052
1053         cik_sdma_soft_reset(handle);
1054
1055         return cik_sdma_hw_init(adev);
1056 }
1057
1058 static bool cik_sdma_is_idle(void *handle)
1059 {
1060         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1061         u32 tmp = RREG32(mmSRBM_STATUS2);
1062
1063         if (tmp & (SRBM_STATUS2__SDMA_BUSY_MASK |
1064                                 SRBM_STATUS2__SDMA1_BUSY_MASK))
1065             return false;
1066
1067         return true;
1068 }
1069
1070 static int cik_sdma_wait_for_idle(void *handle)
1071 {
1072         unsigned i;
1073         u32 tmp;
1074         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1075
1076         for (i = 0; i < adev->usec_timeout; i++) {
1077                 tmp = RREG32(mmSRBM_STATUS2) & (SRBM_STATUS2__SDMA_BUSY_MASK |
1078                                 SRBM_STATUS2__SDMA1_BUSY_MASK);
1079
1080                 if (!tmp)
1081                         return 0;
1082                 udelay(1);
1083         }
1084         return -ETIMEDOUT;
1085 }
1086
1087 static int cik_sdma_soft_reset(void *handle)
1088 {
1089         u32 srbm_soft_reset = 0;
1090         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1091         u32 tmp = RREG32(mmSRBM_STATUS2);
1092
1093         if (tmp & SRBM_STATUS2__SDMA_BUSY_MASK) {
1094                 /* sdma0 */
1095                 tmp = RREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET);
1096                 tmp |= SDMA0_F32_CNTL__HALT_MASK;
1097                 WREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET, tmp);
1098                 srbm_soft_reset |= SRBM_SOFT_RESET__SOFT_RESET_SDMA_MASK;
1099         }
1100         if (tmp & SRBM_STATUS2__SDMA1_BUSY_MASK) {
1101                 /* sdma1 */
1102                 tmp = RREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET);
1103                 tmp |= SDMA0_F32_CNTL__HALT_MASK;
1104                 WREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET, tmp);
1105                 srbm_soft_reset |= SRBM_SOFT_RESET__SOFT_RESET_SDMA1_MASK;
1106         }
1107
1108         if (srbm_soft_reset) {
1109                 tmp = RREG32(mmSRBM_SOFT_RESET);
1110                 tmp |= srbm_soft_reset;
1111                 dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp);
1112                 WREG32(mmSRBM_SOFT_RESET, tmp);
1113                 tmp = RREG32(mmSRBM_SOFT_RESET);
1114
1115                 udelay(50);
1116
1117                 tmp &= ~srbm_soft_reset;
1118                 WREG32(mmSRBM_SOFT_RESET, tmp);
1119                 tmp = RREG32(mmSRBM_SOFT_RESET);
1120
1121                 /* Wait a little for things to settle down */
1122                 udelay(50);
1123         }
1124
1125         return 0;
1126 }
1127
1128 static int cik_sdma_set_trap_irq_state(struct amdgpu_device *adev,
1129                                        struct amdgpu_irq_src *src,
1130                                        unsigned type,
1131                                        enum amdgpu_interrupt_state state)
1132 {
1133         u32 sdma_cntl;
1134
1135         switch (type) {
1136         case AMDGPU_SDMA_IRQ_TRAP0:
1137                 switch (state) {
1138                 case AMDGPU_IRQ_STATE_DISABLE:
1139                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET);
1140                         sdma_cntl &= ~SDMA0_CNTL__TRAP_ENABLE_MASK;
1141                         WREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET, sdma_cntl);
1142                         break;
1143                 case AMDGPU_IRQ_STATE_ENABLE:
1144                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET);
1145                         sdma_cntl |= SDMA0_CNTL__TRAP_ENABLE_MASK;
1146                         WREG32(mmSDMA0_CNTL + SDMA0_REGISTER_OFFSET, sdma_cntl);
1147                         break;
1148                 default:
1149                         break;
1150                 }
1151                 break;
1152         case AMDGPU_SDMA_IRQ_TRAP1:
1153                 switch (state) {
1154                 case AMDGPU_IRQ_STATE_DISABLE:
1155                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET);
1156                         sdma_cntl &= ~SDMA0_CNTL__TRAP_ENABLE_MASK;
1157                         WREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET, sdma_cntl);
1158                         break;
1159                 case AMDGPU_IRQ_STATE_ENABLE:
1160                         sdma_cntl = RREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET);
1161                         sdma_cntl |= SDMA0_CNTL__TRAP_ENABLE_MASK;
1162                         WREG32(mmSDMA0_CNTL + SDMA1_REGISTER_OFFSET, sdma_cntl);
1163                         break;
1164                 default:
1165                         break;
1166                 }
1167                 break;
1168         default:
1169                 break;
1170         }
1171         return 0;
1172 }
1173
1174 static int cik_sdma_process_trap_irq(struct amdgpu_device *adev,
1175                                      struct amdgpu_irq_src *source,
1176                                      struct amdgpu_iv_entry *entry)
1177 {
1178         u8 instance_id, queue_id;
1179
1180         instance_id = (entry->ring_id & 0x3) >> 0;
1181         queue_id = (entry->ring_id & 0xc) >> 2;
1182         DRM_DEBUG("IH: SDMA trap\n");
1183         switch (instance_id) {
1184         case 0:
1185                 switch (queue_id) {
1186                 case 0:
1187                         amdgpu_fence_process(&adev->sdma.instance[0].ring);
1188                         break;
1189                 case 1:
1190                         /* XXX compute */
1191                         break;
1192                 case 2:
1193                         /* XXX compute */
1194                         break;
1195                 }
1196                 break;
1197         case 1:
1198                 switch (queue_id) {
1199                 case 0:
1200                         amdgpu_fence_process(&adev->sdma.instance[1].ring);
1201                         break;
1202                 case 1:
1203                         /* XXX compute */
1204                         break;
1205                 case 2:
1206                         /* XXX compute */
1207                         break;
1208                 }
1209                 break;
1210         }
1211
1212         return 0;
1213 }
1214
1215 static int cik_sdma_process_illegal_inst_irq(struct amdgpu_device *adev,
1216                                              struct amdgpu_irq_src *source,
1217                                              struct amdgpu_iv_entry *entry)
1218 {
1219         DRM_ERROR("Illegal instruction in SDMA command stream\n");
1220         schedule_work(&adev->reset_work);
1221         return 0;
1222 }
1223
1224 static int cik_sdma_set_clockgating_state(void *handle,
1225                                           enum amd_clockgating_state state)
1226 {
1227         bool gate = false;
1228         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
1229
1230         if (state == AMD_CG_STATE_GATE)
1231                 gate = true;
1232
1233         cik_enable_sdma_mgcg(adev, gate);
1234         cik_enable_sdma_mgls(adev, gate);
1235
1236         return 0;
1237 }
1238
1239 static int cik_sdma_set_powergating_state(void *handle,
1240                                           enum amd_powergating_state state)
1241 {
1242         return 0;
1243 }
1244
1245 static const struct amd_ip_funcs cik_sdma_ip_funcs = {
1246         .name = "cik_sdma",
1247         .early_init = cik_sdma_early_init,
1248         .late_init = NULL,
1249         .sw_init = cik_sdma_sw_init,
1250         .sw_fini = cik_sdma_sw_fini,
1251         .hw_init = cik_sdma_hw_init,
1252         .hw_fini = cik_sdma_hw_fini,
1253         .suspend = cik_sdma_suspend,
1254         .resume = cik_sdma_resume,
1255         .is_idle = cik_sdma_is_idle,
1256         .wait_for_idle = cik_sdma_wait_for_idle,
1257         .soft_reset = cik_sdma_soft_reset,
1258         .set_clockgating_state = cik_sdma_set_clockgating_state,
1259         .set_powergating_state = cik_sdma_set_powergating_state,
1260 };
1261
1262 static const struct amdgpu_ring_funcs cik_sdma_ring_funcs = {
1263         .type = AMDGPU_RING_TYPE_SDMA,
1264         .align_mask = 0xf,
1265         .nop = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0),
1266         .support_64bit_ptrs = false,
1267         .get_rptr = cik_sdma_ring_get_rptr,
1268         .get_wptr = cik_sdma_ring_get_wptr,
1269         .set_wptr = cik_sdma_ring_set_wptr,
1270         .emit_frame_size =
1271                 6 + /* cik_sdma_ring_emit_hdp_flush */
1272                 3 + /* hdp invalidate */
1273                 6 + /* cik_sdma_ring_emit_pipeline_sync */
1274                 CIK_FLUSH_GPU_TLB_NUM_WREG * 3 + 6 + /* cik_sdma_ring_emit_vm_flush */
1275                 9 + 9 + 9, /* cik_sdma_ring_emit_fence x3 for user fence, vm fence */
1276         .emit_ib_size = 7 + 4, /* cik_sdma_ring_emit_ib */
1277         .emit_ib = cik_sdma_ring_emit_ib,
1278         .emit_fence = cik_sdma_ring_emit_fence,
1279         .emit_pipeline_sync = cik_sdma_ring_emit_pipeline_sync,
1280         .emit_vm_flush = cik_sdma_ring_emit_vm_flush,
1281         .emit_hdp_flush = cik_sdma_ring_emit_hdp_flush,
1282         .test_ring = cik_sdma_ring_test_ring,
1283         .test_ib = cik_sdma_ring_test_ib,
1284         .insert_nop = cik_sdma_ring_insert_nop,
1285         .pad_ib = cik_sdma_ring_pad_ib,
1286         .emit_wreg = cik_sdma_ring_emit_wreg,
1287 };
1288
1289 static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev)
1290 {
1291         int i;
1292
1293         for (i = 0; i < adev->sdma.num_instances; i++)
1294                 adev->sdma.instance[i].ring.funcs = &cik_sdma_ring_funcs;
1295 }
1296
1297 static const struct amdgpu_irq_src_funcs cik_sdma_trap_irq_funcs = {
1298         .set = cik_sdma_set_trap_irq_state,
1299         .process = cik_sdma_process_trap_irq,
1300 };
1301
1302 static const struct amdgpu_irq_src_funcs cik_sdma_illegal_inst_irq_funcs = {
1303         .process = cik_sdma_process_illegal_inst_irq,
1304 };
1305
1306 static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev)
1307 {
1308         adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST;
1309         adev->sdma.trap_irq.funcs = &cik_sdma_trap_irq_funcs;
1310         adev->sdma.illegal_inst_irq.funcs = &cik_sdma_illegal_inst_irq_funcs;
1311 }
1312
1313 /**
1314  * cik_sdma_emit_copy_buffer - copy buffer using the sDMA engine
1315  *
1316  * @ring: amdgpu_ring structure holding ring information
1317  * @src_offset: src GPU address
1318  * @dst_offset: dst GPU address
1319  * @byte_count: number of bytes to xfer
1320  *
1321  * Copy GPU buffers using the DMA engine (CIK).
1322  * Used by the amdgpu ttm implementation to move pages if
1323  * registered as the asic copy callback.
1324  */
1325 static void cik_sdma_emit_copy_buffer(struct amdgpu_ib *ib,
1326                                       uint64_t src_offset,
1327                                       uint64_t dst_offset,
1328                                       uint32_t byte_count)
1329 {
1330         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY, SDMA_COPY_SUB_OPCODE_LINEAR, 0);
1331         ib->ptr[ib->length_dw++] = byte_count;
1332         ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */
1333         ib->ptr[ib->length_dw++] = lower_32_bits(src_offset);
1334         ib->ptr[ib->length_dw++] = upper_32_bits(src_offset);
1335         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
1336         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset);
1337 }
1338
1339 /**
1340  * cik_sdma_emit_fill_buffer - fill buffer using the sDMA engine
1341  *
1342  * @ring: amdgpu_ring structure holding ring information
1343  * @src_data: value to write to buffer
1344  * @dst_offset: dst GPU address
1345  * @byte_count: number of bytes to xfer
1346  *
1347  * Fill GPU buffers using the DMA engine (CIK).
1348  */
1349 static void cik_sdma_emit_fill_buffer(struct amdgpu_ib *ib,
1350                                       uint32_t src_data,
1351                                       uint64_t dst_offset,
1352                                       uint32_t byte_count)
1353 {
1354         ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_CONSTANT_FILL, 0, 0);
1355         ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset);
1356         ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset);
1357         ib->ptr[ib->length_dw++] = src_data;
1358         ib->ptr[ib->length_dw++] = byte_count;
1359 }
1360
1361 static const struct amdgpu_buffer_funcs cik_sdma_buffer_funcs = {
1362         .copy_max_bytes = 0x1fffff,
1363         .copy_num_dw = 7,
1364         .emit_copy_buffer = cik_sdma_emit_copy_buffer,
1365
1366         .fill_max_bytes = 0x1fffff,
1367         .fill_num_dw = 5,
1368         .emit_fill_buffer = cik_sdma_emit_fill_buffer,
1369 };
1370
1371 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev)
1372 {
1373         if (adev->mman.buffer_funcs == NULL) {
1374                 adev->mman.buffer_funcs = &cik_sdma_buffer_funcs;
1375                 adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
1376         }
1377 }
1378
1379 static const struct amdgpu_vm_pte_funcs cik_sdma_vm_pte_funcs = {
1380         .copy_pte_num_dw = 7,
1381         .copy_pte = cik_sdma_vm_copy_pte,
1382
1383         .write_pte = cik_sdma_vm_write_pte,
1384         .set_pte_pde = cik_sdma_vm_set_pte_pde,
1385 };
1386
1387 static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev)
1388 {
1389         unsigned i;
1390
1391         if (adev->vm_manager.vm_pte_funcs == NULL) {
1392                 adev->vm_manager.vm_pte_funcs = &cik_sdma_vm_pte_funcs;
1393                 for (i = 0; i < adev->sdma.num_instances; i++)
1394                         adev->vm_manager.vm_pte_rings[i] =
1395                                 &adev->sdma.instance[i].ring;
1396
1397                 adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
1398         }
1399 }
1400
1401 const struct amdgpu_ip_block_version cik_sdma_ip_block =
1402 {
1403         .type = AMD_IP_BLOCK_TYPE_SDMA,
1404         .major = 2,
1405         .minor = 0,
1406         .rev = 0,
1407         .funcs = &cik_sdma_ip_funcs,
1408 };