drivers/gpu/drm/amd/amdgpu/navi10_ih.c

   1 /*
   2  * Copyright 2019 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
  24 #include <linux/pci.h>
  25
  26 #include "amdgpu.h"
  27 #include "amdgpu_ih.h"
  28
  29 #include "oss/osssys_5_0_0_offset.h"
  30 #include "oss/osssys_5_0_0_sh_mask.h"
  31
  32 #include "soc15_common.h"
  33 #include "navi10_ih.h"
  34
  35 #define MAX_REARM_RETRY 10
  36
  37 #define mmIH_CHICKEN_Sienna_Cichlid                 0x018d
  38 #define mmIH_CHICKEN_Sienna_Cichlid_BASE_IDX        0
  39
  40 static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev);
  41
  42 /**
  43  * force_update_wptr_for_self_int - Force update the wptr for self interrupt
  44  *
  45  * @adev: amdgpu_device pointer
  46  * @threshold: threshold to trigger the wptr reporting
  47  * @timeout: timeout to trigger the wptr reporting
  48  * @enabled: Enable/disable timeout flush mechanism
  49  *
  50  * threshold input range: 0 ~ 15, default 0,
  51  * real_threshold = 2^threshold
  52  * timeout input range: 0 ~ 20, default 8,
  53  * real_timeout = (2^timeout) * 1024 / (socclk_freq)
  54  *
  55  * Force update wptr for self interrupt ( >= SIENNA_CICHLID).
  56  */
  57 static void
  58 force_update_wptr_for_self_int(struct amdgpu_device *adev,
  59                                u32 threshold, u32 timeout, bool enabled)
  60 {
  61         u32 ih_cntl, ih_rb_cntl;
  62
  63         if (adev->asic_type < CHIP_SIENNA_CICHLID)
  64                 return;
  65
  66         ih_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_CNTL2);
  67         ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
  68
  69         ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL2,
  70                                 SELF_IV_FORCE_WPTR_UPDATE_TIMEOUT, timeout);
  71         ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL2,
  72                                 SELF_IV_FORCE_WPTR_UPDATE_ENABLE, enabled);
  73         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
  74                                    RB_USED_INT_THRESHOLD, threshold);
  75
  76         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
  77         ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
  78         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
  79                                    RB_USED_INT_THRESHOLD, threshold);
  80         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
  81         WREG32_SOC15(OSSSYS, 0, mmIH_CNTL2, ih_cntl);
  82 }
  83
  84 /**
  85  * navi10_ih_enable_interrupts - Enable the interrupt ring buffer
  86  *
  87  * @adev: amdgpu_device pointer
  88  *
  89  * Enable the interrupt ring buffer (NAVI10).
  90  */
  91 static void navi10_ih_enable_interrupts(struct amdgpu_device *adev)
  92 {
  93         u32 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL);
  94
  95         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1);
  96         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1);
  97         if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
  98                 if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL, ih_rb_cntl)) {
  99                         DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
 100                         return;
 101                 }
 102         } else {
 103                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
 104         }
 105
 106         adev->irq.ih.enabled = true;
 107
 108         if (adev->irq.ih1.ring_size) {
 109                 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
 110                 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
 111                                            RB_ENABLE, 1);
 112                 if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 113                         if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1,
 114                                                 ih_rb_cntl)) {
 115                                 DRM_ERROR("program IH_RB_CNTL_RING1 failed!\n");
 116                                 return;
 117                         }
 118                 } else {
 119                         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
 120                 }
 121                 adev->irq.ih1.enabled = true;
 122         }
 123
 124         if (adev->irq.ih2.ring_size) {
 125                 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
 126                 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
 127                                            RB_ENABLE, 1);
 128                 if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 129                         if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2,
 130                                                 ih_rb_cntl)) {
 131                                 DRM_ERROR("program IH_RB_CNTL_RING2 failed!\n");
 132                                 return;
 133                         }
 134                 } else {
 135                         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
 136                 }
 137                 adev->irq.ih2.enabled = true;
 138         }
 139 }
 140
 141 /**
 142  * navi10_ih_disable_interrupts - Disable the interrupt ring buffer
 143  *
 144  * @adev: amdgpu_device pointer
 145  *
 146  * Disable the interrupt ring buffer (NAVI10).
 147  */
 148 static void navi10_ih_disable_interrupts(struct amdgpu_device *adev)
 149 {
 150         u32 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL);
 151
 152         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 0);
 153         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 0);
 154         if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 155                 if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL, ih_rb_cntl)) {
 156                         DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
 157                         return;
 158                 }
 159         } else {
 160                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
 161         }
 162
 163         /* set rptr, wptr to 0 */
 164         WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, 0);
 165         WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR, 0);
 166         adev->irq.ih.enabled = false;
 167         adev->irq.ih.rptr = 0;
 168
 169         if (adev->irq.ih1.ring_size) {
 170                 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
 171                 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
 172                                            RB_ENABLE, 0);
 173                 if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 174                         if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1,
 175                                                 ih_rb_cntl)) {
 176                                 DRM_ERROR("program IH_RB_CNTL_RING1 failed!\n");
 177                                 return;
 178                         }
 179                 } else {
 180                         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
 181                 }
 182                 /* set rptr, wptr to 0 */
 183                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, 0);
 184                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING1, 0);
 185                 adev->irq.ih1.enabled = false;
 186                 adev->irq.ih1.rptr = 0;
 187         }
 188
 189         if (adev->irq.ih2.ring_size) {
 190                 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
 191                 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
 192                                            RB_ENABLE, 0);
 193                 if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 194                         if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2,
 195                                                 ih_rb_cntl)) {
 196                                 DRM_ERROR("program IH_RB_CNTL_RING2 failed!\n");
 197                                 return;
 198                         }
 199                 } else {
 200                         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
 201                 }
 202                 /* set rptr, wptr to 0 */
 203                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, 0);
 204                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING2, 0);
 205                 adev->irq.ih2.enabled = false;
 206                 adev->irq.ih2.rptr = 0;
 207         }
 208
 209 }
 210
 211 static uint32_t navi10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl)
 212 {
 213         int rb_bufsz = order_base_2(ih->ring_size / 4);
 214
 215         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
 216                                    MC_SPACE, ih->use_bus_addr ? 1 : 4);
 217         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
 218                                    WPTR_OVERFLOW_CLEAR, 1);
 219         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
 220                                    WPTR_OVERFLOW_ENABLE, 1);
 221         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz);
 222         /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register
 223          * value is written to memory
 224          */
 225         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
 226                                    WPTR_WRITEBACK_ENABLE, 1);
 227         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1);
 228         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0);
 229         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0);
 230
 231         return ih_rb_cntl;
 232 }
 233
 234 static uint32_t navi10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih)
 235 {
 236         u32 ih_doorbell_rtpr = 0;
 237
 238         if (ih->use_doorbell) {
 239                 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
 240                                                  IH_DOORBELL_RPTR, OFFSET,
 241                                                  ih->doorbell_index);
 242                 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
 243                                                  IH_DOORBELL_RPTR,
 244                                                  ENABLE, 1);
 245         } else {
 246                 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
 247                                                  IH_DOORBELL_RPTR,
 248                                                  ENABLE, 0);
 249         }
 250         return ih_doorbell_rtpr;
 251 }
 252
 253 static void navi10_ih_reroute_ih(struct amdgpu_device *adev)
 254 {
 255         uint32_t tmp;
 256
 257         /* Reroute to IH ring 1 for VMC */
 258         WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x12);
 259         tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA);
 260         tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, CLIENT_TYPE, 1);
 261         tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1);
 262         WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp);
 263
 264         /* Reroute IH ring 1 for UMC */
 265         WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x1B);
 266         tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA);
 267         tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1);
 268         WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp);
 269 }
 270
 271 /**
 272  * navi10_ih_irq_init - init and enable the interrupt ring
 273  *
 274  * @adev: amdgpu_device pointer
 275  *
 276  * Allocate a ring buffer for the interrupt controller,
 277  * enable the RLC, disable interrupts, enable the IH
 278  * ring buffer and enable it (NAVI).
 279  * Called at device load and reume.
 280  * Returns 0 for success, errors for failure.
 281  */
 282 static int navi10_ih_irq_init(struct amdgpu_device *adev)
 283 {
 284         struct amdgpu_ih_ring *ih = &adev->irq.ih;
 285         u32 ih_rb_cntl, ih_chicken;
 286         u32 tmp;
 287
 288         /* disable irqs */
 289         navi10_ih_disable_interrupts(adev);
 290
 291         adev->nbio.funcs->ih_control(adev);
 292
 293         /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/
 294         WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE, ih->gpu_addr >> 8);
 295         WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI, (ih->gpu_addr >> 40) & 0xff);
 296
 297         ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL);
 298         ih_rb_cntl = navi10_ih_rb_cntl(ih, ih_rb_cntl);
 299         ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RPTR_REARM,
 300                                    !!adev->irq.msi_enabled);
 301         if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 302                 if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL, ih_rb_cntl)) {
 303                         DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
 304                         return -ETIMEDOUT;
 305                 }
 306         } else {
 307                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
 308         }
 309         navi10_ih_reroute_ih(adev);
 310
 311         if (unlikely(adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT)) {
 312                 if (ih->use_bus_addr) {
 313                         switch (adev->asic_type) {
 314                         case CHIP_SIENNA_CICHLID:
 315                         case CHIP_NAVY_FLOUNDER:
 316                                 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid);
 317                                 ih_chicken = REG_SET_FIELD(ih_chicken,
 318                                                 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1);
 319                                 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid, ih_chicken);
 320                                 break;
 321                         default:
 322                                 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN);
 323                                 ih_chicken = REG_SET_FIELD(ih_chicken,
 324                                                 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1);
 325                                 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken);
 326                                 break;
 327                         }
 328                 }
 329         }
 330
 331         /* set the writeback address whether it's enabled or not */
 332         WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO,
 333                      lower_32_bits(ih->wptr_addr));
 334         WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_ADDR_HI,
 335                      upper_32_bits(ih->wptr_addr) & 0xFFFF);
 336
 337         /* set rptr, wptr to 0 */
 338         WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, 0);
 339         WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR, 0);
 340
 341         WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR,
 342                         navi10_ih_doorbell_rptr(ih));
 343
 344         adev->nbio.funcs->ih_doorbell_range(adev, ih->use_doorbell,
 345                                             ih->doorbell_index);
 346
 347         ih = &adev->irq.ih1;
 348         if (ih->ring_size) {
 349                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_RING1, ih->gpu_addr >> 8);
 350                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI_RING1,
 351                              (ih->gpu_addr >> 40) & 0xff);
 352
 353                 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
 354                 ih_rb_cntl = navi10_ih_rb_cntl(ih, ih_rb_cntl);
 355                 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
 356                                            WPTR_OVERFLOW_ENABLE, 0);
 357                 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
 358                                            RB_FULL_DRAIN_ENABLE, 1);
 359                 if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 360                         if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1,
 361                                                 ih_rb_cntl)) {
 362                                 DRM_ERROR("program IH_RB_CNTL_RING1 failed!\n");
 363                                 return -ETIMEDOUT;
 364                         }
 365                 } else {
 366                         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
 367                 }
 368                 /* set rptr, wptr to 0 */
 369                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING1, 0);
 370                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, 0);
 371
 372                 WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING1,
 373                                 navi10_ih_doorbell_rptr(ih));
 374         }
 375
 376         ih = &adev->irq.ih2;
 377         if (ih->ring_size) {
 378                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_RING2, ih->gpu_addr >> 8);
 379                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI_RING2,
 380                              (ih->gpu_addr >> 40) & 0xff);
 381
 382                 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
 383                 ih_rb_cntl = navi10_ih_rb_cntl(ih, ih_rb_cntl);
 384
 385                 if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 386                         if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2,
 387                                                 ih_rb_cntl)) {
 388                                 DRM_ERROR("program IH_RB_CNTL_RING2 failed!\n");
 389                                 return -ETIMEDOUT;
 390                         }
 391                 } else {
 392                         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
 393                 }
 394                 /* set rptr, wptr to 0 */
 395                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING2, 0);
 396                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, 0);
 397
 398                 WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING2,
 399                              navi10_ih_doorbell_rptr(ih));
 400         }
 401
 402
 403         tmp = RREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL);
 404         tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL,
 405                             CLIENT18_IS_STORM_CLIENT, 1);
 406         WREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL, tmp);
 407
 408         tmp = RREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL);
 409         tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1);
 410         WREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL, tmp);
 411
 412         pci_set_master(adev->pdev);
 413
 414         /* enable interrupts */
 415         navi10_ih_enable_interrupts(adev);
 416         /* enable wptr force update for self int */
 417         force_update_wptr_for_self_int(adev, 0, 8, true);
 418
 419         return 0;
 420 }
 421
 422 /**
 423  * navi10_ih_irq_disable - disable interrupts
 424  *
 425  * @adev: amdgpu_device pointer
 426  *
 427  * Disable interrupts on the hw (NAVI10).
 428  */
 429 static void navi10_ih_irq_disable(struct amdgpu_device *adev)
 430 {
 431         force_update_wptr_for_self_int(adev, 0, 8, false);
 432         navi10_ih_disable_interrupts(adev);
 433
 434         /* Wait and acknowledge irq */
 435         mdelay(1);
 436 }
 437
 438 /**
 439  * navi10_ih_get_wptr - get the IH ring buffer wptr
 440  *
 441  * @adev: amdgpu_device pointer
 442  *
 443  * Get the IH ring buffer wptr from either the register
 444  * or the writeback memory buffer (NAVI10).  Also check for
 445  * ring buffer overflow and deal with it.
 446  * Returns the value of the wptr.
 447  */
 448 static u32 navi10_ih_get_wptr(struct amdgpu_device *adev,
 449                               struct amdgpu_ih_ring *ih)
 450 {
 451         u32 wptr, reg, tmp;
 452
 453         wptr = le32_to_cpu(*ih->wptr_cpu);
 454
 455         if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
 456                 goto out;
 457
 458         if (ih == &adev->irq.ih)
 459                 reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR);
 460         else if (ih == &adev->irq.ih1)
 461                 reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING1);
 462         else if (ih == &adev->irq.ih2)
 463                 reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING2);
 464         else
 465                 BUG();
 466
 467         wptr = RREG32_NO_KIQ(reg);
 468         if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
 469                 goto out;
 470         wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
 471
 472         /* When a ring buffer overflow happen start parsing interrupt
 473          * from the last not overwritten vector (wptr + 32). Hopefully
 474          * this should allow us to catch up.
 475          */
 476         tmp = (wptr + 32) & ih->ptr_mask;
 477         dev_warn(adev->dev, "IH ring buffer overflow "
 478                  "(0x%08X, 0x%08X, 0x%08X)\n",
 479                  wptr, ih->rptr, tmp);
 480         ih->rptr = tmp;
 481
 482         if (ih == &adev->irq.ih)
 483                 reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL);
 484         else if (ih == &adev->irq.ih1)
 485                 reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING1);
 486         else if (ih == &adev->irq.ih2)
 487                 reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING2);
 488         else
 489                 BUG();
 490
 491         tmp = RREG32_NO_KIQ(reg);
 492         tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
 493         WREG32_NO_KIQ(reg, tmp);
 494 out:
 495         return (wptr & ih->ptr_mask);
 496 }
 497
 498 /**
 499  * navi10_ih_decode_iv - decode an interrupt vector
 500  *
 501  * @adev: amdgpu_device pointer
 502  *
 503  * Decodes the interrupt vector at the current rptr
 504  * position and also advance the position.
 505  */
 506 static void navi10_ih_decode_iv(struct amdgpu_device *adev,
 507                                 struct amdgpu_ih_ring *ih,
 508                                 struct amdgpu_iv_entry *entry)
 509 {
 510         /* wptr/rptr are in bytes! */
 511         u32 ring_index = ih->rptr >> 2;
 512         uint32_t dw[8];
 513
 514         dw[0] = le32_to_cpu(ih->ring[ring_index + 0]);
 515         dw[1] = le32_to_cpu(ih->ring[ring_index + 1]);
 516         dw[2] = le32_to_cpu(ih->ring[ring_index + 2]);
 517         dw[3] = le32_to_cpu(ih->ring[ring_index + 3]);
 518         dw[4] = le32_to_cpu(ih->ring[ring_index + 4]);
 519         dw[5] = le32_to_cpu(ih->ring[ring_index + 5]);
 520         dw[6] = le32_to_cpu(ih->ring[ring_index + 6]);
 521         dw[7] = le32_to_cpu(ih->ring[ring_index + 7]);
 522
 523         entry->client_id = dw[0] & 0xff;
 524         entry->src_id = (dw[0] >> 8) & 0xff;
 525         entry->ring_id = (dw[0] >> 16) & 0xff;
 526         entry->vmid = (dw[0] >> 24) & 0xf;
 527         entry->vmid_src = (dw[0] >> 31);
 528         entry->timestamp = dw[1] | ((u64)(dw[2] & 0xffff) << 32);
 529         entry->timestamp_src = dw[2] >> 31;
 530         entry->pasid = dw[3] & 0xffff;
 531         entry->pasid_src = dw[3] >> 31;
 532         entry->src_data[0] = dw[4];
 533         entry->src_data[1] = dw[5];
 534         entry->src_data[2] = dw[6];
 535         entry->src_data[3] = dw[7];
 536
 537         /* wptr/rptr are in bytes! */
 538         ih->rptr += 32;
 539 }
 540
 541 /**
 542  * navi10_ih_irq_rearm - rearm IRQ if lost
 543  *
 544  * @adev: amdgpu_device pointer
 545  *
 546  */
 547 static void navi10_ih_irq_rearm(struct amdgpu_device *adev,
 548                                struct amdgpu_ih_ring *ih)
 549 {
 550         uint32_t reg_rptr = 0;
 551         uint32_t v = 0;
 552         uint32_t i = 0;
 553
 554         if (ih == &adev->irq.ih)
 555                 reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR);
 556         else if (ih == &adev->irq.ih1)
 557                 reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING1);
 558         else if (ih == &adev->irq.ih2)
 559                 reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING2);
 560         else
 561                 return;
 562
 563         /* Rearm IRQ / re-write doorbell if doorbell write is lost */
 564         for (i = 0; i < MAX_REARM_RETRY; i++) {
 565                 v = RREG32_NO_KIQ(reg_rptr);
 566                 if ((v < ih->ring_size) && (v != ih->rptr))
 567                         WDOORBELL32(ih->doorbell_index, ih->rptr);
 568                 else
 569                         break;
 570         }
 571 }
 572
 573 /**
 574  * navi10_ih_set_rptr - set the IH ring buffer rptr
 575  *
 576  * @adev: amdgpu_device pointer
 577  *
 578  * Set the IH ring buffer rptr.
 579  */
 580 static void navi10_ih_set_rptr(struct amdgpu_device *adev,
 581                                struct amdgpu_ih_ring *ih)
 582 {
 583         if (ih->use_doorbell) {
 584                 /* XXX check if swapping is necessary on BE */
 585                 *ih->rptr_cpu = ih->rptr;
 586                 WDOORBELL32(ih->doorbell_index, ih->rptr);
 587
 588                 if (amdgpu_sriov_vf(adev))
 589                         navi10_ih_irq_rearm(adev, ih);
 590         } else if (ih == &adev->irq.ih) {
 591                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, ih->rptr);
 592         } else if (ih == &adev->irq.ih1) {
 593                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, ih->rptr);
 594         } else if (ih == &adev->irq.ih2) {
 595                 WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, ih->rptr);
 596         }
 597 }
 598
 599 /**
 600  * navi10_ih_self_irq - dispatch work for ring 1 and 2
 601  *
 602  * @adev: amdgpu_device pointer
 603  * @source: irq source
 604  * @entry: IV with WPTR update
 605  *
 606  * Update the WPTR from the IV and schedule work to handle the entries.
 607  */
 608 static int navi10_ih_self_irq(struct amdgpu_device *adev,
 609                               struct amdgpu_irq_src *source,
 610                               struct amdgpu_iv_entry *entry)
 611 {
 612         uint32_t wptr = cpu_to_le32(entry->src_data[0]);
 613
 614         switch (entry->ring_id) {
 615         case 1:
 616                 *adev->irq.ih1.wptr_cpu = wptr;
 617                 schedule_work(&adev->irq.ih1_work);
 618                 break;
 619         case 2:
 620                 *adev->irq.ih2.wptr_cpu = wptr;
 621                 schedule_work(&adev->irq.ih2_work);
 622                 break;
 623         default: break;
 624         }
 625         return 0;
 626 }
 627
 628 static const struct amdgpu_irq_src_funcs navi10_ih_self_irq_funcs = {
 629         .process = navi10_ih_self_irq,
 630 };
 631
 632 static void navi10_ih_set_self_irq_funcs(struct amdgpu_device *adev)
 633 {
 634         adev->irq.self_irq.num_types = 0;
 635         adev->irq.self_irq.funcs = &navi10_ih_self_irq_funcs;
 636 }
 637
 638 static int navi10_ih_early_init(void *handle)
 639 {
 640         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 641
 642         navi10_ih_set_interrupt_funcs(adev);
 643         navi10_ih_set_self_irq_funcs(adev);
 644         return 0;
 645 }
 646
 647 static int navi10_ih_sw_init(void *handle)
 648 {
 649         int r;
 650         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 651         bool use_bus_addr;
 652
 653         r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0,
 654                                 &adev->irq.self_irq);
 655
 656         if (r)
 657                 return r;
 658
 659         /* use gpu virtual address for ih ring
 660          * until ih_checken is programmed to allow
 661          * use bus address for ih ring by psp bl */
 662         use_bus_addr =
 663                 (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) ? false : true;
 664         r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 256 * 1024, use_bus_addr);
 665         if (r)
 666                 return r;
 667
 668         adev->irq.ih.use_doorbell = true;
 669         adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1;
 670
 671         r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, PAGE_SIZE, true);
 672         if (r)
 673                 return r;
 674
 675         adev->irq.ih1.use_doorbell = true;
 676         adev->irq.ih1.doorbell_index = (adev->doorbell_index.ih + 1) << 1;
 677
 678         r = amdgpu_ih_ring_init(adev, &adev->irq.ih2, PAGE_SIZE, true);
 679         if (r)
 680                 return r;
 681
 682         adev->irq.ih2.use_doorbell = true;
 683         adev->irq.ih2.doorbell_index = (adev->doorbell_index.ih + 2) << 1;
 684
 685         r = amdgpu_irq_init(adev);
 686
 687         return r;
 688 }
 689
 690 static int navi10_ih_sw_fini(void *handle)
 691 {
 692         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 693
 694         amdgpu_irq_fini(adev);
 695         amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
 696         amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
 697         amdgpu_ih_ring_fini(adev, &adev->irq.ih);
 698
 699         return 0;
 700 }
 701
 702 static int navi10_ih_hw_init(void *handle)
 703 {
 704         int r;
 705         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 706
 707         r = navi10_ih_irq_init(adev);
 708         if (r)
 709                 return r;
 710
 711         return 0;
 712 }
 713
 714 static int navi10_ih_hw_fini(void *handle)
 715 {
 716         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 717
 718         navi10_ih_irq_disable(adev);
 719
 720         return 0;
 721 }
 722
 723 static int navi10_ih_suspend(void *handle)
 724 {
 725         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 726
 727         return navi10_ih_hw_fini(adev);
 728 }
 729
 730 static int navi10_ih_resume(void *handle)
 731 {
 732         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 733
 734         return navi10_ih_hw_init(adev);
 735 }
 736
 737 static bool navi10_ih_is_idle(void *handle)
 738 {
 739         /* todo */
 740         return true;
 741 }
 742
 743 static int navi10_ih_wait_for_idle(void *handle)
 744 {
 745         /* todo */
 746         return -ETIMEDOUT;
 747 }
 748
 749 static int navi10_ih_soft_reset(void *handle)
 750 {
 751         /* todo */
 752         return 0;
 753 }
 754
 755 static void navi10_ih_update_clockgating_state(struct amdgpu_device *adev,
 756                                                bool enable)
 757 {
 758         uint32_t data, def, field_val;
 759
 760         if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) {
 761                 def = data = RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL);
 762                 field_val = enable ? 0 : 1;
 763                 data = REG_SET_FIELD(data, IH_CLK_CTRL,
 764                                      DBUS_MUX_CLK_SOFT_OVERRIDE, field_val);
 765                 data = REG_SET_FIELD(data, IH_CLK_CTRL,
 766                                      OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val);
 767                 data = REG_SET_FIELD(data, IH_CLK_CTRL,
 768                                      LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val);
 769                 data = REG_SET_FIELD(data, IH_CLK_CTRL,
 770                                      DYN_CLK_SOFT_OVERRIDE, field_val);
 771                 data = REG_SET_FIELD(data, IH_CLK_CTRL,
 772                                      REG_CLK_SOFT_OVERRIDE, field_val);
 773                 if (def != data)
 774                         WREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL, data);
 775         }
 776
 777         return;
 778 }
 779
 780 static int navi10_ih_set_clockgating_state(void *handle,
 781                                            enum amd_clockgating_state state)
 782 {
 783         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 784
 785         navi10_ih_update_clockgating_state(adev,
 786                                 state == AMD_CG_STATE_GATE);
 787         return 0;
 788 }
 789
 790 static int navi10_ih_set_powergating_state(void *handle,
 791                                            enum amd_powergating_state state)
 792 {
 793         return 0;
 794 }
 795
 796 static void navi10_ih_get_clockgating_state(void *handle, u32 *flags)
 797 {
 798         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 799
 800         if (!RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL))
 801                 *flags |= AMD_CG_SUPPORT_IH_CG;
 802
 803         return;
 804 }
 805
 806 static const struct amd_ip_funcs navi10_ih_ip_funcs = {
 807         .name = "navi10_ih",
 808         .early_init = navi10_ih_early_init,
 809         .late_init = NULL,
 810         .sw_init = navi10_ih_sw_init,
 811         .sw_fini = navi10_ih_sw_fini,
 812         .hw_init = navi10_ih_hw_init,
 813         .hw_fini = navi10_ih_hw_fini,
 814         .suspend = navi10_ih_suspend,
 815         .resume = navi10_ih_resume,
 816         .is_idle = navi10_ih_is_idle,
 817         .wait_for_idle = navi10_ih_wait_for_idle,
 818         .soft_reset = navi10_ih_soft_reset,
 819         .set_clockgating_state = navi10_ih_set_clockgating_state,
 820         .set_powergating_state = navi10_ih_set_powergating_state,
 821         .get_clockgating_state = navi10_ih_get_clockgating_state,
 822 };
 823
 824 static const struct amdgpu_ih_funcs navi10_ih_funcs = {
 825         .get_wptr = navi10_ih_get_wptr,
 826         .decode_iv = navi10_ih_decode_iv,
 827         .set_rptr = navi10_ih_set_rptr
 828 };
 829
 830 static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev)
 831 {
 832         if (adev->irq.ih_funcs == NULL)
 833                 adev->irq.ih_funcs = &navi10_ih_funcs;
 834 }
 835
 836 const struct amdgpu_ip_block_version navi10_ih_ip_block =
 837 {
 838         .type = AMD_IP_BLOCK_TYPE_IH,
 839         .major = 5,
 840         .minor = 0,
 841         .rev = 0,
 842         .funcs = &navi10_ih_ip_funcs,
 843 };