drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c

   1 /*
   2  * Copyright 2018 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 "amdgpu.h"
  24 #include "amdgpu_atombios.h"
  25 #include "nbio_v7_4.h"
  26
  27 #include "nbio/nbio_7_4_offset.h"
  28 #include "nbio/nbio_7_4_sh_mask.h"
  29 #include "nbio/nbio_7_4_0_smn.h"
  30 #include <uapi/linux/kfd_ioctl.h>
  31
  32 #define smnNBIF_MGCG_CTRL_LCLK  0x1013a21c
  33
  34 /*
  35  * These are nbio v7_4_1 registers mask. Temporarily define these here since
  36  * nbio v7_4_1 header is incomplete.
  37  */
  38 #define GPU_HDP_FLUSH_DONE__RSVD_ENG0_MASK      0x00001000L
  39 #define GPU_HDP_FLUSH_DONE__RSVD_ENG1_MASK      0x00002000L
  40 #define GPU_HDP_FLUSH_DONE__RSVD_ENG2_MASK      0x00004000L
  41 #define GPU_HDP_FLUSH_DONE__RSVD_ENG3_MASK      0x00008000L
  42 #define GPU_HDP_FLUSH_DONE__RSVD_ENG4_MASK      0x00010000L
  43 #define GPU_HDP_FLUSH_DONE__RSVD_ENG5_MASK      0x00020000L
  44
  45 #define mmBIF_MMSCH1_DOORBELL_RANGE                     0x01dc
  46 #define mmBIF_MMSCH1_DOORBELL_RANGE_BASE_IDX            2
  47 //BIF_MMSCH1_DOORBELL_RANGE
  48 #define BIF_MMSCH1_DOORBELL_RANGE__OFFSET__SHIFT        0x2
  49 #define BIF_MMSCH1_DOORBELL_RANGE__SIZE__SHIFT          0x10
  50 #define BIF_MMSCH1_DOORBELL_RANGE__OFFSET_MASK          0x00000FFCL
  51 #define BIF_MMSCH1_DOORBELL_RANGE__SIZE_MASK            0x001F0000L
  52
  53 static void nbio_v7_4_remap_hdp_registers(struct amdgpu_device *adev)
  54 {
  55         WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
  56                 adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
  57         WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
  58                 adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
  59 }
  60
  61 static u32 nbio_v7_4_get_rev_id(struct amdgpu_device *adev)
  62 {
  63         u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);
  64
  65         tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
  66         tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;
  67
  68         return tmp;
  69 }
  70
  71 static void nbio_v7_4_mc_access_enable(struct amdgpu_device *adev, bool enable)
  72 {
  73         if (enable)
  74                 WREG32_SOC15(NBIO, 0, mmBIF_FB_EN,
  75                         BIF_FB_EN__FB_READ_EN_MASK | BIF_FB_EN__FB_WRITE_EN_MASK);
  76         else
  77                 WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 0);
  78 }
  79
  80 static void nbio_v7_4_hdp_flush(struct amdgpu_device *adev,
  81                                 struct amdgpu_ring *ring)
  82 {
  83         if (!ring || !ring->funcs->emit_wreg)
  84                 WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
  85         else
  86                 amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
  87 }
  88
  89 static u32 nbio_v7_4_get_memsize(struct amdgpu_device *adev)
  90 {
  91         return RREG32_SOC15(NBIO, 0, mmRCC_CONFIG_MEMSIZE);
  92 }
  93
  94 static void nbio_v7_4_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
  95                         bool use_doorbell, int doorbell_index, int doorbell_size)
  96 {
  97         u32 reg, doorbell_range;
  98
  99         if (instance < 2)
 100                 reg = instance +
 101                         SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE);
 102         else
 103                 /*
 104                  * These registers address of SDMA2~7 is not consecutive
 105                  * from SDMA0~1. Need plus 4 dwords offset.
 106                  *
 107                  *   BIF_SDMA0_DOORBELL_RANGE:  0x3bc0
 108                  *   BIF_SDMA1_DOORBELL_RANGE:  0x3bc4
 109                  *   BIF_SDMA2_DOORBELL_RANGE:  0x3bd8
 110                  */
 111                 reg = instance + 0x4 +
 112                         SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE);
 113
 114         doorbell_range = RREG32(reg);
 115
 116         if (use_doorbell) {
 117                 doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);
 118                 doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, doorbell_size);
 119         } else
 120                 doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);
 121
 122         WREG32(reg, doorbell_range);
 123 }
 124
 125 static void nbio_v7_4_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
 126                                          int doorbell_index, int instance)
 127 {
 128         u32 reg;
 129         u32 doorbell_range;
 130
 131         if (instance)
 132                 reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH1_DOORBELL_RANGE);
 133         else
 134                 reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH0_DOORBELL_RANGE);
 135
 136         doorbell_range = RREG32(reg);
 137
 138         if (use_doorbell) {
 139                 doorbell_range = REG_SET_FIELD(doorbell_range,
 140                                                BIF_MMSCH0_DOORBELL_RANGE, OFFSET,
 141                                                doorbell_index);
 142                 doorbell_range = REG_SET_FIELD(doorbell_range,
 143                                                BIF_MMSCH0_DOORBELL_RANGE, SIZE, 8);
 144         } else
 145                 doorbell_range = REG_SET_FIELD(doorbell_range,
 146                                                BIF_MMSCH0_DOORBELL_RANGE, SIZE, 0);
 147
 148         WREG32(reg, doorbell_range);
 149 }
 150
 151 static void nbio_v7_4_enable_doorbell_aperture(struct amdgpu_device *adev,
 152                                                bool enable)
 153 {
 154         WREG32_FIELD15(NBIO, 0, RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, enable ? 1 : 0);
 155 }
 156
 157 static void nbio_v7_4_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
 158                                                         bool enable)
 159 {
 160         u32 tmp = 0;
 161
 162         if (enable) {
 163                 tmp = REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_EN, 1) |
 164                       REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_MODE, 1) |
 165                       REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_SIZE, 0);
 166
 167                 WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_BASE_LOW,
 168                              lower_32_bits(adev->doorbell.base));
 169                 WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_BASE_HIGH,
 170                              upper_32_bits(adev->doorbell.base));
 171         }
 172
 173         WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_CNTL, tmp);
 174 }
 175
 176 static void nbio_v7_4_ih_doorbell_range(struct amdgpu_device *adev,
 177                                         bool use_doorbell, int doorbell_index)
 178 {
 179         u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0 , mmBIF_IH_DOORBELL_RANGE);
 180
 181         if (use_doorbell) {
 182                 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
 183                 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 2);
 184         } else
 185                 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 0);
 186
 187         WREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE, ih_doorbell_range);
 188 }
 189
 190
 191 static void nbio_v7_4_update_medium_grain_clock_gating(struct amdgpu_device *adev,
 192                                                        bool enable)
 193 {
 194         //TODO: Add support for v7.4
 195 }
 196
 197 static void nbio_v7_4_update_medium_grain_light_sleep(struct amdgpu_device *adev,
 198                                                       bool enable)
 199 {
 200         uint32_t def, data;
 201
 202         def = data = RREG32_PCIE(smnPCIE_CNTL2);
 203         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) {
 204                 data |= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
 205                          PCIE_CNTL2__MST_MEM_LS_EN_MASK |
 206                          PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
 207         } else {
 208                 data &= ~(PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
 209                           PCIE_CNTL2__MST_MEM_LS_EN_MASK |
 210                           PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
 211         }
 212
 213         if (def != data)
 214                 WREG32_PCIE(smnPCIE_CNTL2, data);
 215 }
 216
 217 static void nbio_v7_4_get_clockgating_state(struct amdgpu_device *adev,
 218                                             u32 *flags)
 219 {
 220         int data;
 221
 222         /* AMD_CG_SUPPORT_BIF_MGCG */
 223         data = RREG32_PCIE(smnCPM_CONTROL);
 224         if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
 225                 *flags |= AMD_CG_SUPPORT_BIF_MGCG;
 226
 227         /* AMD_CG_SUPPORT_BIF_LS */
 228         data = RREG32_PCIE(smnPCIE_CNTL2);
 229         if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
 230                 *flags |= AMD_CG_SUPPORT_BIF_LS;
 231 }
 232
 233 static void nbio_v7_4_ih_control(struct amdgpu_device *adev)
 234 {
 235         u32 interrupt_cntl;
 236
 237         /* setup interrupt control */
 238         WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8);
 239         interrupt_cntl = RREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL);
 240         /* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi
 241          * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN
 242          */
 243         interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0);
 244         /* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */
 245         interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0);
 246         WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL, interrupt_cntl);
 247 }
 248
 249 static u32 nbio_v7_4_get_hdp_flush_req_offset(struct amdgpu_device *adev)
 250 {
 251         return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_REQ);
 252 }
 253
 254 static u32 nbio_v7_4_get_hdp_flush_done_offset(struct amdgpu_device *adev)
 255 {
 256         return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_DONE);
 257 }
 258
 259 static u32 nbio_v7_4_get_pcie_index_offset(struct amdgpu_device *adev)
 260 {
 261         return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2);
 262 }
 263
 264 static u32 nbio_v7_4_get_pcie_data_offset(struct amdgpu_device *adev)
 265 {
 266         return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2);
 267 }
 268
 269 const struct nbio_hdp_flush_reg nbio_v7_4_hdp_flush_reg = {
 270         .ref_and_mask_cp0 = GPU_HDP_FLUSH_DONE__CP0_MASK,
 271         .ref_and_mask_cp1 = GPU_HDP_FLUSH_DONE__CP1_MASK,
 272         .ref_and_mask_cp2 = GPU_HDP_FLUSH_DONE__CP2_MASK,
 273         .ref_and_mask_cp3 = GPU_HDP_FLUSH_DONE__CP3_MASK,
 274         .ref_and_mask_cp4 = GPU_HDP_FLUSH_DONE__CP4_MASK,
 275         .ref_and_mask_cp5 = GPU_HDP_FLUSH_DONE__CP5_MASK,
 276         .ref_and_mask_cp6 = GPU_HDP_FLUSH_DONE__CP6_MASK,
 277         .ref_and_mask_cp7 = GPU_HDP_FLUSH_DONE__CP7_MASK,
 278         .ref_and_mask_cp8 = GPU_HDP_FLUSH_DONE__CP8_MASK,
 279         .ref_and_mask_cp9 = GPU_HDP_FLUSH_DONE__CP9_MASK,
 280         .ref_and_mask_sdma0 = GPU_HDP_FLUSH_DONE__SDMA0_MASK,
 281         .ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__SDMA1_MASK,
 282         .ref_and_mask_sdma2 = GPU_HDP_FLUSH_DONE__RSVD_ENG0_MASK,
 283         .ref_and_mask_sdma3 = GPU_HDP_FLUSH_DONE__RSVD_ENG1_MASK,
 284         .ref_and_mask_sdma4 = GPU_HDP_FLUSH_DONE__RSVD_ENG2_MASK,
 285         .ref_and_mask_sdma5 = GPU_HDP_FLUSH_DONE__RSVD_ENG3_MASK,
 286         .ref_and_mask_sdma6 = GPU_HDP_FLUSH_DONE__RSVD_ENG4_MASK,
 287         .ref_and_mask_sdma7 = GPU_HDP_FLUSH_DONE__RSVD_ENG5_MASK,
 288 };
 289
 290 static void nbio_v7_4_detect_hw_virt(struct amdgpu_device *adev)
 291 {
 292         uint32_t reg;
 293
 294         reg = RREG32_SOC15(NBIO, 0, mmRCC_IOV_FUNC_IDENTIFIER);
 295         if (reg & 1)
 296                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF;
 297
 298         if (reg & 0x80000000)
 299                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV;
 300
 301         if (!reg) {
 302                 if (is_virtual_machine())       /* passthrough mode exclus sriov mod */
 303                         adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
 304         }
 305 }
 306
 307 static void nbio_v7_4_init_registers(struct amdgpu_device *adev)
 308 {
 309         uint32_t def, data;
 310
 311         def = data = RREG32_PCIE(smnPCIE_CI_CNTL);
 312         data = REG_SET_FIELD(data, PCIE_CI_CNTL, CI_SLV_ORDERING_DIS, 1);
 313
 314         if (def != data)
 315                 WREG32_PCIE(smnPCIE_CI_CNTL, data);
 316 }
 317
 318 static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device *adev)
 319 {
 320         uint32_t bif_doorbell_intr_cntl;
 321
 322         bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL);
 323         if (REG_GET_FIELD(bif_doorbell_intr_cntl,
 324                 BIF_DOORBELL_INT_CNTL, RAS_CNTLR_INTERRUPT_STATUS)) {
 325                 /* driver has to clear the interrupt status when bif ring is disabled */
 326                 bif_doorbell_intr_cntl = REG_SET_FIELD(bif_doorbell_intr_cntl,
 327                                                 BIF_DOORBELL_INT_CNTL,
 328                                                 RAS_CNTLR_INTERRUPT_CLEAR, 1);
 329                 WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL, bif_doorbell_intr_cntl);
 330         }
 331 }
 332
 333 static void nbio_v7_4_handle_ras_err_event_athub_intr_no_bifring(struct amdgpu_device *adev)
 334 {
 335         uint32_t bif_doorbell_intr_cntl;
 336
 337         bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL);
 338         if (REG_GET_FIELD(bif_doorbell_intr_cntl,
 339                 BIF_DOORBELL_INT_CNTL, RAS_ATHUB_ERR_EVENT_INTERRUPT_STATUS)) {
 340                 /* driver has to clear the interrupt status when bif ring is disabled */
 341                 bif_doorbell_intr_cntl = REG_SET_FIELD(bif_doorbell_intr_cntl,
 342                                                 BIF_DOORBELL_INT_CNTL,
 343                                                 RAS_ATHUB_ERR_EVENT_INTERRUPT_CLEAR, 1);
 344                 WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL, bif_doorbell_intr_cntl);
 345         }
 346 }
 347
 348 const struct amdgpu_nbio_funcs nbio_v7_4_funcs = {
 349         .get_hdp_flush_req_offset = nbio_v7_4_get_hdp_flush_req_offset,
 350         .get_hdp_flush_done_offset = nbio_v7_4_get_hdp_flush_done_offset,
 351         .get_pcie_index_offset = nbio_v7_4_get_pcie_index_offset,
 352         .get_pcie_data_offset = nbio_v7_4_get_pcie_data_offset,
 353         .get_rev_id = nbio_v7_4_get_rev_id,
 354         .mc_access_enable = nbio_v7_4_mc_access_enable,
 355         .hdp_flush = nbio_v7_4_hdp_flush,
 356         .get_memsize = nbio_v7_4_get_memsize,
 357         .sdma_doorbell_range = nbio_v7_4_sdma_doorbell_range,
 358         .vcn_doorbell_range = nbio_v7_4_vcn_doorbell_range,
 359         .enable_doorbell_aperture = nbio_v7_4_enable_doorbell_aperture,
 360         .enable_doorbell_selfring_aperture = nbio_v7_4_enable_doorbell_selfring_aperture,
 361         .ih_doorbell_range = nbio_v7_4_ih_doorbell_range,
 362         .update_medium_grain_clock_gating = nbio_v7_4_update_medium_grain_clock_gating,
 363         .update_medium_grain_light_sleep = nbio_v7_4_update_medium_grain_light_sleep,
 364         .get_clockgating_state = nbio_v7_4_get_clockgating_state,
 365         .ih_control = nbio_v7_4_ih_control,
 366         .init_registers = nbio_v7_4_init_registers,
 367         .detect_hw_virt = nbio_v7_4_detect_hw_virt,
 368         .remap_hdp_registers = nbio_v7_4_remap_hdp_registers,
 369         .handle_ras_controller_intr_no_bifring = nbio_v7_4_handle_ras_controller_intr_no_bifring,
 370         .handle_ras_err_event_athub_intr_no_bifring = nbio_v7_4_handle_ras_err_event_athub_intr_no_bifring,
 371 };