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

   1 /*
   2  * Copyright 2022 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
  23 #include <linux/firmware.h>
  24 #include <drm/drm_drv.h>
  25
  26 #include "amdgpu.h"
  27 #include "amdgpu_ucode.h"
  28 #include "amdgpu_vpe.h"
  29 #include "amdgpu_smu.h"
  30 #include "soc15_common.h"
  31 #include "vpe_v6_1.h"
  32
  33 #define AMDGPU_CSA_VPE_SIZE     64
  34 /* VPE CSA resides in the 4th page of CSA */
  35 #define AMDGPU_CSA_VPE_OFFSET   (4096 * 3)
  36
  37 /* 1 second timeout */
  38 #define VPE_IDLE_TIMEOUT        msecs_to_jiffies(1000)
  39
  40 #define VPE_MAX_DPM_LEVEL                       4
  41 #define FIXED1_8_BITS_PER_FRACTIONAL_PART       8
  42 #define GET_PRATIO_INTEGER_PART(x)              ((x) >> FIXED1_8_BITS_PER_FRACTIONAL_PART)
  43
  44 static void vpe_set_ring_funcs(struct amdgpu_device *adev);
  45
  46 static inline uint16_t div16_u16_rem(uint16_t dividend, uint16_t divisor, uint16_t *remainder)
  47 {
  48         *remainder = dividend % divisor;
  49         return dividend / divisor;
  50 }
  51
  52 static inline uint16_t complete_integer_division_u16(
  53         uint16_t dividend,
  54         uint16_t divisor,
  55         uint16_t *remainder)
  56 {
  57         return div16_u16_rem(dividend, divisor, (uint16_t *)remainder);
  58 }
  59
  60 static uint16_t vpe_u1_8_from_fraction(uint16_t numerator, uint16_t denominator)
  61 {
  62         u16 arg1_value = numerator;
  63         u16 arg2_value = denominator;
  64
  65         uint16_t remainder;
  66
  67         /* determine integer part */
  68         uint16_t res_value = complete_integer_division_u16(
  69                 arg1_value, arg2_value, &remainder);
  70
  71         if (res_value > 127 /* CHAR_MAX */)
  72                 return 0;
  73
  74         /* determine fractional part */
  75         {
  76                 unsigned int i = FIXED1_8_BITS_PER_FRACTIONAL_PART;
  77
  78                 do {
  79                         remainder <<= 1;
  80
  81                         res_value <<= 1;
  82
  83                         if (remainder >= arg2_value) {
  84                                 res_value |= 1;
  85                                 remainder -= arg2_value;
  86                         }
  87                 } while (--i != 0);
  88         }
  89
  90         /* round up LSB */
  91         {
  92                 uint16_t summand = (remainder << 1) >= arg2_value;
  93
  94                 if ((res_value + summand) > 32767 /* SHRT_MAX */)
  95                         return 0;
  96
  97                 res_value += summand;
  98         }
  99
 100         return res_value;
 101 }
 102
 103 static uint16_t vpe_internal_get_pratio(uint16_t from_frequency, uint16_t to_frequency)
 104 {
 105         uint16_t pratio = vpe_u1_8_from_fraction(from_frequency, to_frequency);
 106
 107         if (GET_PRATIO_INTEGER_PART(pratio) > 1)
 108                 pratio = 0;
 109
 110         return pratio;
 111 }
 112
 113 /*
 114  * VPE has 4 DPM levels from level 0 (lowerest) to 3 (highest),
 115  * VPE FW will dynamically decide which level should be used according to current loading.
 116  *
 117  * Get VPE and SOC clocks from PM, and select the appropriate four clock values,
 118  * calculate the ratios of adjusting from one clock to another.
 119  * The VPE FW can then request the appropriate frequency from the PMFW.
 120  */
 121 int amdgpu_vpe_configure_dpm(struct amdgpu_vpe *vpe)
 122 {
 123         struct amdgpu_device *adev = vpe->ring.adev;
 124         uint32_t dpm_ctl;
 125
 126         if (adev->pm.dpm_enabled) {
 127                 struct dpm_clocks clock_table = { 0 };
 128                 struct dpm_clock *VPEClks;
 129                 struct dpm_clock *SOCClks;
 130                 uint32_t idx;
 131                 uint32_t vpeclk_enalbled_num = 0;
 132                 uint32_t pratio_vmax_vnorm = 0, pratio_vnorm_vmid = 0, pratio_vmid_vmin = 0;
 133                 uint16_t pratio_vmin_freq = 0, pratio_vmid_freq = 0, pratio_vnorm_freq = 0, pratio_vmax_freq = 0;
 134
 135                 dpm_ctl = RREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_enable));
 136                 dpm_ctl |= 1; /* DPM enablement */
 137                 WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_enable), dpm_ctl);
 138
 139                 /* Get VPECLK and SOCCLK */
 140                 if (amdgpu_dpm_get_dpm_clock_table(adev, &clock_table)) {
 141                         dev_dbg(adev->dev, "%s: get clock failed!\n", __func__);
 142                         goto disable_dpm;
 143                 }
 144
 145                 SOCClks = clock_table.SocClocks;
 146                 VPEClks = clock_table.VPEClocks;
 147
 148                 /* Comfirm enabled vpe clk num
 149                  * Enabled VPE clocks are ordered from low to high in VPEClks
 150                  * The highest valid clock index+1 is the number of VPEClks
 151                  */
 152                 for (idx = PP_SMU_NUM_VPECLK_DPM_LEVELS; idx && !vpeclk_enalbled_num; idx--)
 153                         if (VPEClks[idx-1].Freq)
 154                                 vpeclk_enalbled_num = idx;
 155
 156                 /* vpe dpm only cares 4 levels. */
 157                 for (idx = 0; idx < VPE_MAX_DPM_LEVEL; idx++) {
 158                         uint32_t soc_dpm_level;
 159                         uint32_t min_freq;
 160
 161                         if (idx == 0)
 162                                 soc_dpm_level = 0;
 163                         else
 164                                 soc_dpm_level = (idx * 2) + 1;
 165
 166                         /* clamp the max level */
 167                         if (soc_dpm_level > vpeclk_enalbled_num - 1)
 168                                 soc_dpm_level = vpeclk_enalbled_num - 1;
 169
 170                         min_freq = (SOCClks[soc_dpm_level].Freq < VPEClks[soc_dpm_level].Freq) ?
 171                                    SOCClks[soc_dpm_level].Freq : VPEClks[soc_dpm_level].Freq;
 172
 173                         switch (idx) {
 174                         case 0:
 175                                 pratio_vmin_freq = min_freq;
 176                                 break;
 177                         case 1:
 178                                 pratio_vmid_freq = min_freq;
 179                                 break;
 180                         case 2:
 181                                 pratio_vnorm_freq = min_freq;
 182                                 break;
 183                         case 3:
 184                                 pratio_vmax_freq = min_freq;
 185                                 break;
 186                         default:
 187                                 break;
 188                         }
 189                 }
 190
 191                 if (pratio_vmin_freq && pratio_vmid_freq && pratio_vnorm_freq && pratio_vmax_freq) {
 192                         uint32_t pratio_ctl;
 193
 194                         pratio_vmax_vnorm = (uint32_t)vpe_internal_get_pratio(pratio_vmax_freq, pratio_vnorm_freq);
 195                         pratio_vnorm_vmid = (uint32_t)vpe_internal_get_pratio(pratio_vnorm_freq, pratio_vmid_freq);
 196                         pratio_vmid_vmin = (uint32_t)vpe_internal_get_pratio(pratio_vmid_freq, pratio_vmin_freq);
 197
 198                         pratio_ctl = pratio_vmax_vnorm | (pratio_vnorm_vmid << 9) | (pratio_vmid_vmin << 18);
 199                         WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_pratio), pratio_ctl);           /* PRatio */
 200                         WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_request_interval), 24000);      /* 1ms, unit=1/24MHz */
 201                         WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_decision_threshold), 1200000);  /* 50ms */
 202                         WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_busy_clamp_threshold), 1200000);/* 50ms */
 203                         WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_idle_clamp_threshold), 1200000);/* 50ms */
 204                         dev_dbg(adev->dev, "%s: configure vpe dpm pratio done!\n", __func__);
 205                 } else {
 206                         dev_dbg(adev->dev, "%s: invalid pratio parameters!\n", __func__);
 207                         goto disable_dpm;
 208                 }
 209         }
 210         return 0;
 211
 212 disable_dpm:
 213         dpm_ctl = RREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_enable));
 214         dpm_ctl &= 0xfffffffe; /* Disable DPM */
 215         WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_enable), dpm_ctl);
 216         dev_dbg(adev->dev, "%s: disable vpe dpm\n", __func__);
 217         return -EINVAL;
 218 }
 219
 220 int amdgpu_vpe_psp_update_sram(struct amdgpu_device *adev)
 221 {
 222         struct amdgpu_firmware_info ucode = {
 223                 .ucode_id = AMDGPU_UCODE_ID_VPE,
 224                 .mc_addr = adev->vpe.cmdbuf_gpu_addr,
 225                 .ucode_size = 8,
 226         };
 227
 228         return psp_execute_ip_fw_load(&adev->psp, &ucode);
 229 }
 230
 231 int amdgpu_vpe_init_microcode(struct amdgpu_vpe *vpe)
 232 {
 233         struct amdgpu_device *adev = vpe->ring.adev;
 234         const struct vpe_firmware_header_v1_0 *vpe_hdr;
 235         char fw_prefix[32];
 236         int ret;
 237
 238         amdgpu_ucode_ip_version_decode(adev, VPE_HWIP, fw_prefix, sizeof(fw_prefix));
 239         ret = amdgpu_ucode_request(adev, &adev->vpe.fw, "amdgpu/%s.bin", fw_prefix);
 240         if (ret)
 241                 goto out;
 242
 243         vpe_hdr = (const struct vpe_firmware_header_v1_0 *)adev->vpe.fw->data;
 244         adev->vpe.fw_version = le32_to_cpu(vpe_hdr->header.ucode_version);
 245         adev->vpe.feature_version = le32_to_cpu(vpe_hdr->ucode_feature_version);
 246
 247         if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
 248                 struct amdgpu_firmware_info *info;
 249
 250                 info = &adev->firmware.ucode[AMDGPU_UCODE_ID_VPE_CTX];
 251                 info->ucode_id = AMDGPU_UCODE_ID_VPE_CTX;
 252                 info->fw = adev->vpe.fw;
 253                 adev->firmware.fw_size +=
 254                         ALIGN(le32_to_cpu(vpe_hdr->ctx_ucode_size_bytes), PAGE_SIZE);
 255
 256                 info = &adev->firmware.ucode[AMDGPU_UCODE_ID_VPE_CTL];
 257                 info->ucode_id = AMDGPU_UCODE_ID_VPE_CTL;
 258                 info->fw = adev->vpe.fw;
 259                 adev->firmware.fw_size +=
 260                         ALIGN(le32_to_cpu(vpe_hdr->ctl_ucode_size_bytes), PAGE_SIZE);
 261         }
 262
 263         return 0;
 264 out:
 265         dev_err(adev->dev, "fail to initialize vpe microcode\n");
 266         release_firmware(adev->vpe.fw);
 267         adev->vpe.fw = NULL;
 268         return ret;
 269 }
 270
 271 int amdgpu_vpe_ring_init(struct amdgpu_vpe *vpe)
 272 {
 273         struct amdgpu_device *adev = container_of(vpe, struct amdgpu_device, vpe);
 274         struct amdgpu_ring *ring = &vpe->ring;
 275         int ret;
 276
 277         ring->ring_obj = NULL;
 278         ring->use_doorbell = true;
 279         ring->vm_hub = AMDGPU_MMHUB0(0);
 280         ring->doorbell_index = (adev->doorbell_index.vpe_ring << 1);
 281         snprintf(ring->name, 4, "vpe");
 282
 283         ret = amdgpu_ring_init(adev, ring, 1024, &vpe->trap_irq, 0,
 284                              AMDGPU_RING_PRIO_DEFAULT, NULL);
 285         if (ret)
 286                 return ret;
 287
 288         return 0;
 289 }
 290
 291 int amdgpu_vpe_ring_fini(struct amdgpu_vpe *vpe)
 292 {
 293         amdgpu_ring_fini(&vpe->ring);
 294
 295         return 0;
 296 }
 297
 298 static int vpe_early_init(struct amdgpu_ip_block *ip_block)
 299 {
 300         struct amdgpu_device *adev = ip_block->adev;
 301         struct amdgpu_vpe *vpe = &adev->vpe;
 302
 303         switch (amdgpu_ip_version(adev, VPE_HWIP, 0)) {
 304         case IP_VERSION(6, 1, 0):
 305         case IP_VERSION(6, 1, 3):
 306                 vpe_v6_1_set_funcs(vpe);
 307                 break;
 308         case IP_VERSION(6, 1, 1):
 309                 vpe_v6_1_set_funcs(vpe);
 310                 vpe->collaborate_mode = true;
 311                 break;
 312         default:
 313                 return -EINVAL;
 314         }
 315
 316         vpe_set_ring_funcs(adev);
 317         vpe_set_regs(vpe);
 318
 319         dev_info(adev->dev, "VPE: collaborate mode %s", vpe->collaborate_mode ? "true" : "false");
 320
 321         return 0;
 322 }
 323
 324 static void vpe_idle_work_handler(struct work_struct *work)
 325 {
 326         struct amdgpu_device *adev =
 327                 container_of(work, struct amdgpu_device, vpe.idle_work.work);
 328         unsigned int fences = 0;
 329
 330         fences += amdgpu_fence_count_emitted(&adev->vpe.ring);
 331
 332         if (fences == 0)
 333                 amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VPE, AMD_PG_STATE_GATE);
 334         else
 335                 schedule_delayed_work(&adev->vpe.idle_work, VPE_IDLE_TIMEOUT);
 336 }
 337
 338 static int vpe_common_init(struct amdgpu_vpe *vpe)
 339 {
 340         struct amdgpu_device *adev = container_of(vpe, struct amdgpu_device, vpe);
 341         int r;
 342
 343         r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE,
 344                                     AMDGPU_GEM_DOMAIN_GTT,
 345                                     &adev->vpe.cmdbuf_obj,
 346                                     &adev->vpe.cmdbuf_gpu_addr,
 347                                     (void **)&adev->vpe.cmdbuf_cpu_addr);
 348         if (r) {
 349                 dev_err(adev->dev, "VPE: failed to allocate cmdbuf bo %d\n", r);
 350                 return r;
 351         }
 352
 353         vpe->context_started = false;
 354         INIT_DELAYED_WORK(&adev->vpe.idle_work, vpe_idle_work_handler);
 355
 356         return 0;
 357 }
 358
 359 static int vpe_sw_init(struct amdgpu_ip_block *ip_block)
 360 {
 361         struct amdgpu_device *adev = ip_block->adev;
 362         struct amdgpu_vpe *vpe = &adev->vpe;
 363         int ret;
 364
 365         ret = vpe_common_init(vpe);
 366         if (ret)
 367                 goto out;
 368
 369         ret = vpe_irq_init(vpe);
 370         if (ret)
 371                 goto out;
 372
 373         ret = vpe_ring_init(vpe);
 374         if (ret)
 375                 goto out;
 376
 377         ret = vpe_init_microcode(vpe);
 378         if (ret)
 379                 goto out;
 380 out:
 381         return ret;
 382 }
 383
 384 static int vpe_sw_fini(struct amdgpu_ip_block *ip_block)
 385 {
 386         struct amdgpu_device *adev = ip_block->adev;
 387         struct amdgpu_vpe *vpe = &adev->vpe;
 388
 389         release_firmware(vpe->fw);
 390         vpe->fw = NULL;
 391
 392         vpe_ring_fini(vpe);
 393
 394         amdgpu_bo_free_kernel(&adev->vpe.cmdbuf_obj,
 395                               &adev->vpe.cmdbuf_gpu_addr,
 396                               (void **)&adev->vpe.cmdbuf_cpu_addr);
 397
 398         return 0;
 399 }
 400
 401 static int vpe_hw_init(struct amdgpu_ip_block *ip_block)
 402 {
 403         struct amdgpu_device *adev = ip_block->adev;
 404         struct amdgpu_vpe *vpe = &adev->vpe;
 405         int ret;
 406
 407         /* Power on VPE */
 408         ret = amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VPE,
 409                                                      AMD_PG_STATE_UNGATE);
 410         if (ret)
 411                 return ret;
 412
 413         ret = vpe_load_microcode(vpe);
 414         if (ret)
 415                 return ret;
 416
 417         ret = vpe_ring_start(vpe);
 418         if (ret)
 419                 return ret;
 420
 421         return 0;
 422 }
 423
 424 static int vpe_hw_fini(struct amdgpu_ip_block *ip_block)
 425 {
 426         struct amdgpu_device *adev = ip_block->adev;
 427         struct amdgpu_vpe *vpe = &adev->vpe;
 428
 429         vpe_ring_stop(vpe);
 430
 431         /* Power off VPE */
 432         amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VPE, AMD_PG_STATE_GATE);
 433
 434         return 0;
 435 }
 436
 437 static int vpe_suspend(struct amdgpu_ip_block *ip_block)
 438 {
 439         struct amdgpu_device *adev = ip_block->adev;
 440
 441         cancel_delayed_work_sync(&adev->vpe.idle_work);
 442
 443         return vpe_hw_fini(ip_block);
 444 }
 445
 446 static int vpe_resume(struct amdgpu_ip_block *ip_block)
 447 {
 448         return vpe_hw_init(ip_block);
 449 }
 450
 451 static void vpe_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
 452 {
 453         int i;
 454
 455         for (i = 0; i < count; i++)
 456                 if (i == 0)
 457                         amdgpu_ring_write(ring, ring->funcs->nop |
 458                                 VPE_CMD_NOP_HEADER_COUNT(count - 1));
 459                 else
 460                         amdgpu_ring_write(ring, ring->funcs->nop);
 461 }
 462
 463 static uint64_t vpe_get_csa_mc_addr(struct amdgpu_ring *ring, uint32_t vmid)
 464 {
 465         struct amdgpu_device *adev = ring->adev;
 466         uint32_t index = 0;
 467         uint64_t csa_mc_addr;
 468
 469         if (amdgpu_sriov_vf(adev) || vmid == 0 || !adev->gfx.mcbp)
 470                 return 0;
 471
 472         csa_mc_addr = amdgpu_csa_vaddr(adev) + AMDGPU_CSA_VPE_OFFSET +
 473                       index * AMDGPU_CSA_VPE_SIZE;
 474
 475         return csa_mc_addr;
 476 }
 477
 478 static void vpe_ring_emit_pred_exec(struct amdgpu_ring *ring,
 479                                     uint32_t device_select,
 480                                     uint32_t exec_count)
 481 {
 482         if (!ring->adev->vpe.collaborate_mode)
 483                 return;
 484
 485         amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_PRED_EXE, 0) |
 486                                 (device_select << 16));
 487         amdgpu_ring_write(ring, exec_count & 0x1fff);
 488 }
 489
 490 static void vpe_ring_emit_ib(struct amdgpu_ring *ring,
 491                              struct amdgpu_job *job,
 492                              struct amdgpu_ib *ib,
 493                              uint32_t flags)
 494 {
 495         uint32_t vmid = AMDGPU_JOB_GET_VMID(job);
 496         uint64_t csa_mc_addr = vpe_get_csa_mc_addr(ring, vmid);
 497
 498         amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_INDIRECT, 0) |
 499                                 VPE_CMD_INDIRECT_HEADER_VMID(vmid & 0xf));
 500
 501         /* base must be 32 byte aligned */
 502         amdgpu_ring_write(ring, ib->gpu_addr & 0xffffffe0);
 503         amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr));
 504         amdgpu_ring_write(ring, ib->length_dw);
 505         amdgpu_ring_write(ring, lower_32_bits(csa_mc_addr));
 506         amdgpu_ring_write(ring, upper_32_bits(csa_mc_addr));
 507 }
 508
 509 static void vpe_ring_emit_fence(struct amdgpu_ring *ring, uint64_t addr,
 510                                 uint64_t seq, unsigned int flags)
 511 {
 512         int i = 0;
 513
 514         do {
 515                 /* write the fence */
 516                 amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_FENCE, 0));
 517                 /* zero in first two bits */
 518                 WARN_ON_ONCE(addr & 0x3);
 519                 amdgpu_ring_write(ring, lower_32_bits(addr));
 520                 amdgpu_ring_write(ring, upper_32_bits(addr));
 521                 amdgpu_ring_write(ring, i == 0 ? lower_32_bits(seq) : upper_32_bits(seq));
 522                 addr += 4;
 523         } while ((flags & AMDGPU_FENCE_FLAG_64BIT) && (i++ < 1));
 524
 525         if (flags & AMDGPU_FENCE_FLAG_INT) {
 526                 /* generate an interrupt */
 527                 amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_TRAP, 0));
 528                 amdgpu_ring_write(ring, 0);
 529         }
 530
 531 }
 532
 533 static void vpe_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
 534 {
 535         uint32_t seq = ring->fence_drv.sync_seq;
 536         uint64_t addr = ring->fence_drv.gpu_addr;
 537
 538         vpe_ring_emit_pred_exec(ring, 0, 6);
 539
 540         /* wait for idle */
 541         amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_POLL_REGMEM,
 542                                 VPE_POLL_REGMEM_SUBOP_REGMEM) |
 543                                 VPE_CMD_POLL_REGMEM_HEADER_FUNC(3) | /* equal */
 544                                 VPE_CMD_POLL_REGMEM_HEADER_MEM(1));
 545         amdgpu_ring_write(ring, addr & 0xfffffffc);
 546         amdgpu_ring_write(ring, upper_32_bits(addr));
 547         amdgpu_ring_write(ring, seq); /* reference */
 548         amdgpu_ring_write(ring, 0xffffffff); /* mask */
 549         amdgpu_ring_write(ring, VPE_CMD_POLL_REGMEM_DW5_RETRY_COUNT(0xfff) |
 550                                 VPE_CMD_POLL_REGMEM_DW5_INTERVAL(4));
 551 }
 552
 553 static void vpe_ring_emit_wreg(struct amdgpu_ring *ring, uint32_t reg, uint32_t val)
 554 {
 555         vpe_ring_emit_pred_exec(ring, 0, 3);
 556
 557         amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_REG_WRITE, 0));
 558         amdgpu_ring_write(ring, reg << 2);
 559         amdgpu_ring_write(ring, val);
 560 }
 561
 562 static void vpe_ring_emit_reg_wait(struct amdgpu_ring *ring, uint32_t reg,
 563                                    uint32_t val, uint32_t mask)
 564 {
 565         vpe_ring_emit_pred_exec(ring, 0, 6);
 566
 567         amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_POLL_REGMEM,
 568                                 VPE_POLL_REGMEM_SUBOP_REGMEM) |
 569                                 VPE_CMD_POLL_REGMEM_HEADER_FUNC(3) | /* equal */
 570                                 VPE_CMD_POLL_REGMEM_HEADER_MEM(0));
 571         amdgpu_ring_write(ring, reg << 2);
 572         amdgpu_ring_write(ring, 0);
 573         amdgpu_ring_write(ring, val); /* reference */
 574         amdgpu_ring_write(ring, mask); /* mask */
 575         amdgpu_ring_write(ring, VPE_CMD_POLL_REGMEM_DW5_RETRY_COUNT(0xfff) |
 576                                 VPE_CMD_POLL_REGMEM_DW5_INTERVAL(10));
 577 }
 578
 579 static void vpe_ring_emit_vm_flush(struct amdgpu_ring *ring, unsigned int vmid,
 580                                    uint64_t pd_addr)
 581 {
 582         amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
 583 }
 584
 585 static unsigned int vpe_ring_init_cond_exec(struct amdgpu_ring *ring,
 586                                             uint64_t addr)
 587 {
 588         unsigned int ret;
 589
 590         amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_COND_EXE, 0));
 591         amdgpu_ring_write(ring, lower_32_bits(addr));
 592         amdgpu_ring_write(ring, upper_32_bits(addr));
 593         amdgpu_ring_write(ring, 1);
 594         ret = ring->wptr & ring->buf_mask;
 595         amdgpu_ring_write(ring, 0);
 596
 597         return ret;
 598 }
 599
 600 static int vpe_ring_preempt_ib(struct amdgpu_ring *ring)
 601 {
 602         struct amdgpu_device *adev = ring->adev;
 603         struct amdgpu_vpe *vpe = &adev->vpe;
 604         uint32_t preempt_reg = vpe->regs.queue0_preempt;
 605         int i, r = 0;
 606
 607         /* assert preemption condition */
 608         amdgpu_ring_set_preempt_cond_exec(ring, false);
 609
 610         /* emit the trailing fence */
 611         ring->trail_seq += 1;
 612         amdgpu_ring_alloc(ring, 10);
 613         vpe_ring_emit_fence(ring, ring->trail_fence_gpu_addr, ring->trail_seq, 0);
 614         amdgpu_ring_commit(ring);
 615
 616         /* assert IB preemption */
 617         WREG32(vpe_get_reg_offset(vpe, ring->me, preempt_reg), 1);
 618
 619         /* poll the trailing fence */
 620         for (i = 0; i < adev->usec_timeout; i++) {
 621                 if (ring->trail_seq ==
 622                     le32_to_cpu(*(ring->trail_fence_cpu_addr)))
 623                         break;
 624                 udelay(1);
 625         }
 626
 627         if (i >= adev->usec_timeout) {
 628                 r = -EINVAL;
 629                 dev_err(adev->dev, "ring %d failed to be preempted\n", ring->idx);
 630         }
 631
 632         /* deassert IB preemption */
 633         WREG32(vpe_get_reg_offset(vpe, ring->me, preempt_reg), 0);
 634
 635         /* deassert the preemption condition */
 636         amdgpu_ring_set_preempt_cond_exec(ring, true);
 637
 638         return r;
 639 }
 640
 641 static int vpe_set_clockgating_state(void *handle,
 642                                      enum amd_clockgating_state state)
 643 {
 644         return 0;
 645 }
 646
 647 static int vpe_set_powergating_state(void *handle,
 648                                      enum amd_powergating_state state)
 649 {
 650         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 651         struct amdgpu_vpe *vpe = &adev->vpe;
 652
 653         if (!adev->pm.dpm_enabled)
 654                 dev_err(adev->dev, "Without PM, cannot support powergating\n");
 655
 656         dev_dbg(adev->dev, "%s: %s!\n", __func__, (state == AMD_PG_STATE_GATE) ? "GATE":"UNGATE");
 657
 658         if (state == AMD_PG_STATE_GATE) {
 659                 amdgpu_dpm_enable_vpe(adev, false);
 660                 vpe->context_started = false;
 661         } else {
 662                 amdgpu_dpm_enable_vpe(adev, true);
 663         }
 664
 665         return 0;
 666 }
 667
 668 static uint64_t vpe_ring_get_rptr(struct amdgpu_ring *ring)
 669 {
 670         struct amdgpu_device *adev = ring->adev;
 671         struct amdgpu_vpe *vpe = &adev->vpe;
 672         uint64_t rptr;
 673
 674         if (ring->use_doorbell) {
 675                 rptr = atomic64_read((atomic64_t *)ring->rptr_cpu_addr);
 676                 dev_dbg(adev->dev, "rptr/doorbell before shift == 0x%016llx\n", rptr);
 677         } else {
 678                 rptr = RREG32(vpe_get_reg_offset(vpe, ring->me, vpe->regs.queue0_rb_rptr_hi));
 679                 rptr = rptr << 32;
 680                 rptr |= RREG32(vpe_get_reg_offset(vpe, ring->me, vpe->regs.queue0_rb_rptr_lo));
 681                 dev_dbg(adev->dev, "rptr before shift [%i] == 0x%016llx\n", ring->me, rptr);
 682         }
 683
 684         return (rptr >> 2);
 685 }
 686
 687 static uint64_t vpe_ring_get_wptr(struct amdgpu_ring *ring)
 688 {
 689         struct amdgpu_device *adev = ring->adev;
 690         struct amdgpu_vpe *vpe = &adev->vpe;
 691         uint64_t wptr;
 692
 693         if (ring->use_doorbell) {
 694                 wptr = atomic64_read((atomic64_t *)ring->wptr_cpu_addr);
 695                 dev_dbg(adev->dev, "wptr/doorbell before shift == 0x%016llx\n", wptr);
 696         } else {
 697                 wptr = RREG32(vpe_get_reg_offset(vpe, ring->me, vpe->regs.queue0_rb_wptr_hi));
 698                 wptr = wptr << 32;
 699                 wptr |= RREG32(vpe_get_reg_offset(vpe, ring->me, vpe->regs.queue0_rb_wptr_lo));
 700                 dev_dbg(adev->dev, "wptr before shift [%i] == 0x%016llx\n", ring->me, wptr);
 701         }
 702
 703         return (wptr >> 2);
 704 }
 705
 706 static void vpe_ring_set_wptr(struct amdgpu_ring *ring)
 707 {
 708         struct amdgpu_device *adev = ring->adev;
 709         struct amdgpu_vpe *vpe = &adev->vpe;
 710
 711         if (ring->use_doorbell) {
 712                 dev_dbg(adev->dev, "Using doorbell, \
 713                         wptr_offs == 0x%08x, \
 714                         lower_32_bits(ring->wptr) << 2 == 0x%08x, \
 715                         upper_32_bits(ring->wptr) << 2 == 0x%08x\n",
 716                         ring->wptr_offs,
 717                         lower_32_bits(ring->wptr << 2),
 718                         upper_32_bits(ring->wptr << 2));
 719                 atomic64_set((atomic64_t *)ring->wptr_cpu_addr, ring->wptr << 2);
 720                 WDOORBELL64(ring->doorbell_index, ring->wptr << 2);
 721                 if (vpe->collaborate_mode)
 722                         WDOORBELL64(ring->doorbell_index + 4, ring->wptr << 2);
 723         } else {
 724                 int i;
 725
 726                 for (i = 0; i < vpe->num_instances; i++) {
 727                         dev_dbg(adev->dev, "Not using doorbell, \
 728                                 regVPEC_QUEUE0_RB_WPTR == 0x%08x, \
 729                                 regVPEC_QUEUE0_RB_WPTR_HI == 0x%08x\n",
 730                                 lower_32_bits(ring->wptr << 2),
 731                                 upper_32_bits(ring->wptr << 2));
 732                         WREG32(vpe_get_reg_offset(vpe, i, vpe->regs.queue0_rb_wptr_lo),
 733                                lower_32_bits(ring->wptr << 2));
 734                         WREG32(vpe_get_reg_offset(vpe, i, vpe->regs.queue0_rb_wptr_hi),
 735                                upper_32_bits(ring->wptr << 2));
 736                 }
 737         }
 738 }
 739
 740 static int vpe_ring_test_ring(struct amdgpu_ring *ring)
 741 {
 742         struct amdgpu_device *adev = ring->adev;
 743         const uint32_t test_pattern = 0xdeadbeef;
 744         uint32_t index, i;
 745         uint64_t wb_addr;
 746         int ret;
 747
 748         ret = amdgpu_device_wb_get(adev, &index);
 749         if (ret) {
 750                 dev_err(adev->dev, "(%d) failed to allocate wb slot\n", ret);
 751                 return ret;
 752         }
 753
 754         adev->wb.wb[index] = 0;
 755         wb_addr = adev->wb.gpu_addr + (index * 4);
 756
 757         ret = amdgpu_ring_alloc(ring, 4);
 758         if (ret) {
 759                 dev_err(adev->dev, "amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, ret);
 760                 goto out;
 761         }
 762
 763         amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_FENCE, 0));
 764         amdgpu_ring_write(ring, lower_32_bits(wb_addr));
 765         amdgpu_ring_write(ring, upper_32_bits(wb_addr));
 766         amdgpu_ring_write(ring, test_pattern);
 767         amdgpu_ring_commit(ring);
 768
 769         for (i = 0; i < adev->usec_timeout; i++) {
 770                 if (le32_to_cpu(adev->wb.wb[index]) == test_pattern)
 771                         goto out;
 772                 udelay(1);
 773         }
 774
 775         ret = -ETIMEDOUT;
 776 out:
 777         amdgpu_device_wb_free(adev, index);
 778
 779         return ret;
 780 }
 781
 782 static int vpe_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 783 {
 784         struct amdgpu_device *adev = ring->adev;
 785         const uint32_t test_pattern = 0xdeadbeef;
 786         struct amdgpu_ib ib = {};
 787         struct dma_fence *f = NULL;
 788         uint32_t index;
 789         uint64_t wb_addr;
 790         int ret;
 791
 792         ret = amdgpu_device_wb_get(adev, &index);
 793         if (ret) {
 794                 dev_err(adev->dev, "(%d) failed to allocate wb slot\n", ret);
 795                 return ret;
 796         }
 797
 798         adev->wb.wb[index] = 0;
 799         wb_addr = adev->wb.gpu_addr + (index * 4);
 800
 801         ret = amdgpu_ib_get(adev, NULL, 256, AMDGPU_IB_POOL_DIRECT, &ib);
 802         if (ret)
 803                 goto err0;
 804
 805         ib.ptr[0] = VPE_CMD_HEADER(VPE_CMD_OPCODE_FENCE, 0);
 806         ib.ptr[1] = lower_32_bits(wb_addr);
 807         ib.ptr[2] = upper_32_bits(wb_addr);
 808         ib.ptr[3] = test_pattern;
 809         ib.ptr[4] = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0);
 810         ib.ptr[5] = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0);
 811         ib.ptr[6] = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0);
 812         ib.ptr[7] = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0);
 813         ib.length_dw = 8;
 814
 815         ret = amdgpu_ib_schedule(ring, 1, &ib, NULL, &f);
 816         if (ret)
 817                 goto err1;
 818
 819         ret = dma_fence_wait_timeout(f, false, timeout);
 820         if (ret <= 0) {
 821                 ret = ret ? : -ETIMEDOUT;
 822                 goto err1;
 823         }
 824
 825         ret = (le32_to_cpu(adev->wb.wb[index]) == test_pattern) ? 0 : -EINVAL;
 826
 827 err1:
 828         amdgpu_ib_free(adev, &ib, NULL);
 829         dma_fence_put(f);
 830 err0:
 831         amdgpu_device_wb_free(adev, index);
 832
 833         return ret;
 834 }
 835
 836 static void vpe_ring_begin_use(struct amdgpu_ring *ring)
 837 {
 838         struct amdgpu_device *adev = ring->adev;
 839         struct amdgpu_vpe *vpe = &adev->vpe;
 840
 841         cancel_delayed_work_sync(&adev->vpe.idle_work);
 842
 843         /* Power on VPE and notify VPE of new context  */
 844         if (!vpe->context_started) {
 845                 uint32_t context_notify;
 846
 847                 /* Power on VPE */
 848                 amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VPE, AMD_PG_STATE_UNGATE);
 849
 850                 /* Indicates that a job from a new context has been submitted. */
 851                 context_notify = RREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.context_indicator));
 852                 if ((context_notify & 0x1) == 0)
 853                         context_notify |= 0x1;
 854                 else
 855                         context_notify &= ~(0x1);
 856                 WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.context_indicator), context_notify);
 857                 vpe->context_started = true;
 858         }
 859 }
 860
 861 static void vpe_ring_end_use(struct amdgpu_ring *ring)
 862 {
 863         struct amdgpu_device *adev = ring->adev;
 864
 865         schedule_delayed_work(&adev->vpe.idle_work, VPE_IDLE_TIMEOUT);
 866 }
 867
 868 static const struct amdgpu_ring_funcs vpe_ring_funcs = {
 869         .type = AMDGPU_RING_TYPE_VPE,
 870         .align_mask = 0xf,
 871         .nop = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0),
 872         .support_64bit_ptrs = true,
 873         .get_rptr = vpe_ring_get_rptr,
 874         .get_wptr = vpe_ring_get_wptr,
 875         .set_wptr = vpe_ring_set_wptr,
 876         .emit_frame_size =
 877                 5 + /* vpe_ring_init_cond_exec */
 878                 6 + /* vpe_ring_emit_pipeline_sync */
 879                 10 + 10 + 10 + /* vpe_ring_emit_fence */
 880                 /* vpe_ring_emit_vm_flush */
 881                 SOC15_FLUSH_GPU_TLB_NUM_WREG * 3 +
 882                 SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT * 6,
 883         .emit_ib_size = 7 + 6,
 884         .emit_ib = vpe_ring_emit_ib,
 885         .emit_pipeline_sync = vpe_ring_emit_pipeline_sync,
 886         .emit_fence = vpe_ring_emit_fence,
 887         .emit_vm_flush = vpe_ring_emit_vm_flush,
 888         .emit_wreg = vpe_ring_emit_wreg,
 889         .emit_reg_wait = vpe_ring_emit_reg_wait,
 890         .emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
 891         .insert_nop = vpe_ring_insert_nop,
 892         .pad_ib = amdgpu_ring_generic_pad_ib,
 893         .test_ring = vpe_ring_test_ring,
 894         .test_ib = vpe_ring_test_ib,
 895         .init_cond_exec = vpe_ring_init_cond_exec,
 896         .preempt_ib = vpe_ring_preempt_ib,
 897         .begin_use = vpe_ring_begin_use,
 898         .end_use = vpe_ring_end_use,
 899 };
 900
 901 static void vpe_set_ring_funcs(struct amdgpu_device *adev)
 902 {
 903         adev->vpe.ring.funcs = &vpe_ring_funcs;
 904 }
 905
 906 const struct amd_ip_funcs vpe_ip_funcs = {
 907         .name = "vpe_v6_1",
 908         .early_init = vpe_early_init,
 909         .sw_init = vpe_sw_init,
 910         .sw_fini = vpe_sw_fini,
 911         .hw_init = vpe_hw_init,
 912         .hw_fini = vpe_hw_fini,
 913         .suspend = vpe_suspend,
 914         .resume = vpe_resume,
 915         .set_clockgating_state = vpe_set_clockgating_state,
 916         .set_powergating_state = vpe_set_powergating_state,
 917 };
 918
 919 const struct amdgpu_ip_block_version vpe_v6_1_ip_block = {
 920         .type = AMD_IP_BLOCK_TYPE_VPE,
 921         .major = 6,
 922         .minor = 1,
 923         .rev = 0,
 924         .funcs = &vpe_ip_funcs,
 925 };