drivers/gpu/drm/amd/amdgpu/nbio_v2_3.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 #include "amdgpu.h"
  24 #include "amdgpu_atombios.h"
  25 #include "nbio_v2_3.h"
  26
  27 #include "nbio/nbio_2_3_default.h"
  28 #include "nbio/nbio_2_3_offset.h"
  29 #include "nbio/nbio_2_3_sh_mask.h"
  30 #include <uapi/linux/kfd_ioctl.h>
  31
  32 #define smnPCIE_CONFIG_CNTL     0x11180044
  33 #define smnCPM_CONTROL          0x11180460
  34 #define smnPCIE_CNTL2           0x11180070
  35
  36
  37 static void nbio_v2_3_remap_hdp_registers(struct amdgpu_device *adev)
  38 {
  39         WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
  40                 adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
  41         WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
  42                 adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
  43 }
  44
  45 static u32 nbio_v2_3_get_rev_id(struct amdgpu_device *adev)
  46 {
  47         u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);
  48
  49         tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
  50         tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;
  51
  52         return tmp;
  53 }
  54
  55 static void nbio_v2_3_mc_access_enable(struct amdgpu_device *adev, bool enable)
  56 {
  57         if (enable)
  58                 WREG32_SOC15(NBIO, 0, mmBIF_FB_EN,
  59                              BIF_FB_EN__FB_READ_EN_MASK |
  60                              BIF_FB_EN__FB_WRITE_EN_MASK);
  61         else
  62                 WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 0);
  63 }
  64
  65 static void nbio_v2_3_hdp_flush(struct amdgpu_device *adev,
  66                                 struct amdgpu_ring *ring)
  67 {
  68         if (!ring || !ring->funcs->emit_wreg)
  69                 WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
  70         else
  71                 amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
  72 }
  73
  74 static u32 nbio_v2_3_get_memsize(struct amdgpu_device *adev)
  75 {
  76         return RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_RCC_CONFIG_MEMSIZE);
  77 }
  78
  79 static void nbio_v2_3_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
  80                                           bool use_doorbell, int doorbell_index,
  81                                           int doorbell_size)
  82 {
  83         u32 reg = instance == 0 ? SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE) :
  84                         SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA1_DOORBELL_RANGE);
  85
  86         u32 doorbell_range = RREG32(reg);
  87
  88         if (use_doorbell) {
  89                 doorbell_range = REG_SET_FIELD(doorbell_range,
  90                                                BIF_SDMA0_DOORBELL_RANGE, OFFSET,
  91                                                doorbell_index);
  92                 doorbell_range = REG_SET_FIELD(doorbell_range,
  93                                                BIF_SDMA0_DOORBELL_RANGE, SIZE,
  94                                                doorbell_size);
  95         } else
  96                 doorbell_range = REG_SET_FIELD(doorbell_range,
  97                                                BIF_SDMA0_DOORBELL_RANGE, SIZE,
  98                                                0);
  99
 100         WREG32(reg, doorbell_range);
 101 }
 102
 103 static void nbio_v2_3_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
 104                                          int doorbell_index, int instance)
 105 {
 106         u32 reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH0_DOORBELL_RANGE);
 107
 108         u32 doorbell_range = RREG32(reg);
 109
 110         if (use_doorbell) {
 111                 doorbell_range = REG_SET_FIELD(doorbell_range,
 112                                                BIF_MMSCH0_DOORBELL_RANGE, OFFSET,
 113                                                doorbell_index);
 114                 doorbell_range = REG_SET_FIELD(doorbell_range,
 115                                                BIF_MMSCH0_DOORBELL_RANGE, SIZE, 8);
 116         } else
 117                 doorbell_range = REG_SET_FIELD(doorbell_range,
 118                                                BIF_MMSCH0_DOORBELL_RANGE, SIZE, 0);
 119
 120         WREG32(reg, doorbell_range);
 121 }
 122
 123 static void nbio_v2_3_enable_doorbell_aperture(struct amdgpu_device *adev,
 124                                                bool enable)
 125 {
 126         WREG32_FIELD15(NBIO, 0, RCC_DEV0_EPF0_RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN,
 127                        enable ? 1 : 0);
 128 }
 129
 130 static void nbio_v2_3_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
 131                                                         bool enable)
 132 {
 133         u32 tmp = 0;
 134
 135         if (enable) {
 136                 tmp = REG_SET_FIELD(tmp, BIF_BX_PF_DOORBELL_SELFRING_GPA_APER_CNTL,
 137                                     DOORBELL_SELFRING_GPA_APER_EN, 1) |
 138                       REG_SET_FIELD(tmp, BIF_BX_PF_DOORBELL_SELFRING_GPA_APER_CNTL,
 139                                     DOORBELL_SELFRING_GPA_APER_MODE, 1) |
 140                       REG_SET_FIELD(tmp, BIF_BX_PF_DOORBELL_SELFRING_GPA_APER_CNTL,
 141                                     DOORBELL_SELFRING_GPA_APER_SIZE, 0);
 142
 143                 WREG32_SOC15(NBIO, 0, mmBIF_BX_PF_DOORBELL_SELFRING_GPA_APER_BASE_LOW,
 144                              lower_32_bits(adev->doorbell.base));
 145                 WREG32_SOC15(NBIO, 0, mmBIF_BX_PF_DOORBELL_SELFRING_GPA_APER_BASE_HIGH,
 146                              upper_32_bits(adev->doorbell.base));
 147         }
 148
 149         WREG32_SOC15(NBIO, 0, mmBIF_BX_PF_DOORBELL_SELFRING_GPA_APER_CNTL,
 150                      tmp);
 151 }
 152
 153
 154 static void nbio_v2_3_ih_doorbell_range(struct amdgpu_device *adev,
 155                                         bool use_doorbell, int doorbell_index)
 156 {
 157         u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE);
 158
 159         if (use_doorbell) {
 160                 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
 161                                                   BIF_IH_DOORBELL_RANGE, OFFSET,
 162                                                   doorbell_index);
 163                 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
 164                                                   BIF_IH_DOORBELL_RANGE, SIZE,
 165                                                   2);
 166         } else
 167                 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
 168                                                   BIF_IH_DOORBELL_RANGE, SIZE,
 169                                                   0);
 170
 171         WREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE, ih_doorbell_range);
 172 }
 173
 174 static void nbio_v2_3_ih_control(struct amdgpu_device *adev)
 175 {
 176         u32 interrupt_cntl;
 177
 178         /* setup interrupt control */
 179         WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8);
 180
 181         interrupt_cntl = RREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL);
 182         /*
 183          * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi
 184          * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN
 185          */
 186         interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL,
 187                                        IH_DUMMY_RD_OVERRIDE, 0);
 188
 189         /* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */
 190         interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL,
 191                                        IH_REQ_NONSNOOP_EN, 0);
 192
 193         WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL, interrupt_cntl);
 194 }
 195
 196 static void nbio_v2_3_update_medium_grain_clock_gating(struct amdgpu_device *adev,
 197                                                        bool enable)
 198 {
 199         uint32_t def, data;
 200
 201         def = data = RREG32_PCIE(smnCPM_CONTROL);
 202         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG)) {
 203                 data |= (CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK |
 204                          CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK |
 205                          CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK |
 206                          CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK |
 207                          CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK |
 208                          CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK);
 209         } else {
 210                 data &= ~(CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK |
 211                           CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK |
 212                           CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK |
 213                           CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK |
 214                           CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK |
 215                           CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK);
 216         }
 217
 218         if (def != data)
 219                 WREG32_PCIE(smnCPM_CONTROL, data);
 220 }
 221
 222 static void nbio_v2_3_update_medium_grain_light_sleep(struct amdgpu_device *adev,
 223                                                       bool enable)
 224 {
 225         uint32_t def, data;
 226
 227         def = data = RREG32_PCIE(smnPCIE_CNTL2);
 228         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) {
 229                 data |= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
 230                          PCIE_CNTL2__MST_MEM_LS_EN_MASK |
 231                          PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
 232         } else {
 233                 data &= ~(PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
 234                           PCIE_CNTL2__MST_MEM_LS_EN_MASK |
 235                           PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
 236         }
 237
 238         if (def != data)
 239                 WREG32_PCIE(smnPCIE_CNTL2, data);
 240 }
 241
 242 static void nbio_v2_3_get_clockgating_state(struct amdgpu_device *adev,
 243                                             u32 *flags)
 244 {
 245         int data;
 246
 247         /* AMD_CG_SUPPORT_BIF_MGCG */
 248         data = RREG32_PCIE(smnCPM_CONTROL);
 249         if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
 250                 *flags |= AMD_CG_SUPPORT_BIF_MGCG;
 251
 252         /* AMD_CG_SUPPORT_BIF_LS */
 253         data = RREG32_PCIE(smnPCIE_CNTL2);
 254         if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
 255                 *flags |= AMD_CG_SUPPORT_BIF_LS;
 256 }
 257
 258 static u32 nbio_v2_3_get_hdp_flush_req_offset(struct amdgpu_device *adev)
 259 {
 260         return SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_GPU_HDP_FLUSH_REQ);
 261 }
 262
 263 static u32 nbio_v2_3_get_hdp_flush_done_offset(struct amdgpu_device *adev)
 264 {
 265         return SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_GPU_HDP_FLUSH_DONE);
 266 }
 267
 268 static u32 nbio_v2_3_get_pcie_index_offset(struct amdgpu_device *adev)
 269 {
 270         return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2);
 271 }
 272
 273 static u32 nbio_v2_3_get_pcie_data_offset(struct amdgpu_device *adev)
 274 {
 275         return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2);
 276 }
 277
 278 const struct nbio_hdp_flush_reg nbio_v2_3_hdp_flush_reg = {
 279         .ref_and_mask_cp0 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP0_MASK,
 280         .ref_and_mask_cp1 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP1_MASK,
 281         .ref_and_mask_cp2 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP2_MASK,
 282         .ref_and_mask_cp3 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP3_MASK,
 283         .ref_and_mask_cp4 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP4_MASK,
 284         .ref_and_mask_cp5 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP5_MASK,
 285         .ref_and_mask_cp6 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP6_MASK,
 286         .ref_and_mask_cp7 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP7_MASK,
 287         .ref_and_mask_cp8 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP8_MASK,
 288         .ref_and_mask_cp9 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP9_MASK,
 289         .ref_and_mask_sdma0 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__SDMA0_MASK,
 290         .ref_and_mask_sdma1 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__SDMA1_MASK,
 291 };
 292
 293 static void nbio_v2_3_detect_hw_virt(struct amdgpu_device *adev)
 294 {
 295         uint32_t reg;
 296
 297         reg = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_RCC_IOV_FUNC_IDENTIFIER);
 298         if (reg & 1)
 299                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF;
 300
 301         if (reg & 0x80000000)
 302                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV;
 303
 304         if (!reg) {
 305                 if (is_virtual_machine())       /* passthrough mode exclus sriov mod */
 306                         adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
 307         }
 308 }
 309
 310 static void nbio_v2_3_init_registers(struct amdgpu_device *adev)
 311 {
 312         uint32_t def, data;
 313
 314         def = data = RREG32_PCIE(smnPCIE_CONFIG_CNTL);
 315         data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL, CI_SWUS_MAX_READ_REQUEST_SIZE_MODE, 1);
 316         data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL, CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV, 1);
 317
 318         if (def != data)
 319                 WREG32_PCIE(smnPCIE_CONFIG_CNTL, data);
 320 }
 321
 322 const struct amdgpu_nbio_funcs nbio_v2_3_funcs = {
 323         .get_hdp_flush_req_offset = nbio_v2_3_get_hdp_flush_req_offset,
 324         .get_hdp_flush_done_offset = nbio_v2_3_get_hdp_flush_done_offset,
 325         .get_pcie_index_offset = nbio_v2_3_get_pcie_index_offset,
 326         .get_pcie_data_offset = nbio_v2_3_get_pcie_data_offset,
 327         .get_rev_id = nbio_v2_3_get_rev_id,
 328         .mc_access_enable = nbio_v2_3_mc_access_enable,
 329         .hdp_flush = nbio_v2_3_hdp_flush,
 330         .get_memsize = nbio_v2_3_get_memsize,
 331         .sdma_doorbell_range = nbio_v2_3_sdma_doorbell_range,
 332         .vcn_doorbell_range = nbio_v2_3_vcn_doorbell_range,
 333         .enable_doorbell_aperture = nbio_v2_3_enable_doorbell_aperture,
 334         .enable_doorbell_selfring_aperture = nbio_v2_3_enable_doorbell_selfring_aperture,
 335         .ih_doorbell_range = nbio_v2_3_ih_doorbell_range,
 336         .update_medium_grain_clock_gating = nbio_v2_3_update_medium_grain_clock_gating,
 337         .update_medium_grain_light_sleep = nbio_v2_3_update_medium_grain_light_sleep,
 338         .get_clockgating_state = nbio_v2_3_get_clockgating_state,
 339         .ih_control = nbio_v2_3_ih_control,
 340         .init_registers = nbio_v2_3_init_registers,
 341         .detect_hw_virt = nbio_v2_3_detect_hw_virt,
 342         .remap_hdp_registers = nbio_v2_3_remap_hdp_registers,
 343 };