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