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 31 #define smnPCIE_CONFIG_CNTL 0x11180044 32 #define smnCPM_CONTROL 0x11180460 33 #define smnPCIE_CNTL2 0x11180070 34 35 static u32 nbio_v2_3_get_rev_id(struct amdgpu_device *adev) 36 { 37 u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0); 38 39 tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK; 40 tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT; 41 42 return tmp; 43 } 44 45 static void nbio_v2_3_mc_access_enable(struct amdgpu_device *adev, bool enable) 46 { 47 if (enable) 48 WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 49 BIF_FB_EN__FB_READ_EN_MASK | 50 BIF_FB_EN__FB_WRITE_EN_MASK); 51 else 52 WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 0); 53 } 54 55 static void nbio_v2_3_hdp_flush(struct amdgpu_device *adev, 56 struct amdgpu_ring *ring) 57 { 58 if (!ring || !ring->funcs->emit_wreg) 59 WREG32_SOC15_NO_KIQ(NBIO, 0, mmBIF_BX_PF_HDP_MEM_COHERENCY_FLUSH_CNTL, 0); 60 else 61 amdgpu_ring_emit_wreg(ring, SOC15_REG_OFFSET( 62 NBIO, 0, mmBIF_BX_PF_HDP_MEM_COHERENCY_FLUSH_CNTL), 0); 63 } 64 65 static u32 nbio_v2_3_get_memsize(struct amdgpu_device *adev) 66 { 67 return RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_RCC_CONFIG_MEMSIZE); 68 } 69 70 static void nbio_v2_3_sdma_doorbell_range(struct amdgpu_device *adev, int instance, 71 bool use_doorbell, int doorbell_index, 72 int doorbell_size) 73 { 74 u32 reg = instance == 0 ? SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE) : 75 SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA1_DOORBELL_RANGE); 76 77 u32 doorbell_range = RREG32(reg); 78 79 if (use_doorbell) { 80 doorbell_range = REG_SET_FIELD(doorbell_range, 81 BIF_SDMA0_DOORBELL_RANGE, OFFSET, 82 doorbell_index); 83 doorbell_range = REG_SET_FIELD(doorbell_range, 84 BIF_SDMA0_DOORBELL_RANGE, SIZE, 85 doorbell_size); 86 } else 87 doorbell_range = REG_SET_FIELD(doorbell_range, 88 BIF_SDMA0_DOORBELL_RANGE, SIZE, 89 0); 90 91 WREG32(reg, doorbell_range); 92 } 93 94 static void nbio_v2_3_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell, 95 int doorbell_index) 96 { 97 u32 reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH0_DOORBELL_RANGE); 98 99 u32 doorbell_range = RREG32(reg); 100 101 if (use_doorbell) { 102 doorbell_range = REG_SET_FIELD(doorbell_range, 103 BIF_MMSCH0_DOORBELL_RANGE, OFFSET, 104 doorbell_index); 105 doorbell_range = REG_SET_FIELD(doorbell_range, 106 BIF_MMSCH0_DOORBELL_RANGE, SIZE, 8); 107 } else 108 doorbell_range = REG_SET_FIELD(doorbell_range, 109 BIF_MMSCH0_DOORBELL_RANGE, SIZE, 0); 110 111 WREG32(reg, doorbell_range); 112 } 113 114 static void nbio_v2_3_enable_doorbell_aperture(struct amdgpu_device *adev, 115 bool enable) 116 { 117 WREG32_FIELD15(NBIO, 0, RCC_DEV0_EPF0_RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, 118 enable ? 1 : 0); 119 } 120 121 static void nbio_v2_3_enable_doorbell_selfring_aperture(struct amdgpu_device *adev, 122 bool enable) 123 { 124 u32 tmp = 0; 125 126 if (enable) { 127 tmp = REG_SET_FIELD(tmp, BIF_BX_PF_DOORBELL_SELFRING_GPA_APER_CNTL, 128 DOORBELL_SELFRING_GPA_APER_EN, 1) | 129 REG_SET_FIELD(tmp, BIF_BX_PF_DOORBELL_SELFRING_GPA_APER_CNTL, 130 DOORBELL_SELFRING_GPA_APER_MODE, 1) | 131 REG_SET_FIELD(tmp, BIF_BX_PF_DOORBELL_SELFRING_GPA_APER_CNTL, 132 DOORBELL_SELFRING_GPA_APER_SIZE, 0); 133 134 WREG32_SOC15(NBIO, 0, mmBIF_BX_PF_DOORBELL_SELFRING_GPA_APER_BASE_LOW, 135 lower_32_bits(adev->doorbell.base)); 136 WREG32_SOC15(NBIO, 0, mmBIF_BX_PF_DOORBELL_SELFRING_GPA_APER_BASE_HIGH, 137 upper_32_bits(adev->doorbell.base)); 138 } 139 140 WREG32_SOC15(NBIO, 0, mmBIF_BX_PF_DOORBELL_SELFRING_GPA_APER_CNTL, 141 tmp); 142 } 143 144 145 static void nbio_v2_3_ih_doorbell_range(struct amdgpu_device *adev, 146 bool use_doorbell, int doorbell_index) 147 { 148 u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE); 149 150 if (use_doorbell) { 151 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, 152 BIF_IH_DOORBELL_RANGE, OFFSET, 153 doorbell_index); 154 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, 155 BIF_IH_DOORBELL_RANGE, SIZE, 156 2); 157 } else 158 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, 159 BIF_IH_DOORBELL_RANGE, SIZE, 160 0); 161 162 WREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE, ih_doorbell_range); 163 } 164 165 static void nbio_v2_3_ih_control(struct amdgpu_device *adev) 166 { 167 u32 interrupt_cntl; 168 169 /* setup interrupt control */ 170 WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8); 171 172 interrupt_cntl = RREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL); 173 /* 174 * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi 175 * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN 176 */ 177 interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, 178 IH_DUMMY_RD_OVERRIDE, 0); 179 180 /* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */ 181 interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, 182 IH_REQ_NONSNOOP_EN, 0); 183 184 WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL, interrupt_cntl); 185 } 186 187 static void nbio_v2_3_update_medium_grain_clock_gating(struct amdgpu_device *adev, 188 bool enable) 189 { 190 uint32_t def, data; 191 192 def = data = RREG32_PCIE(smnCPM_CONTROL); 193 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG)) { 194 data |= (CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK | 195 CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK | 196 CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK | 197 CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK | 198 CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK | 199 CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK); 200 } else { 201 data &= ~(CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK | 202 CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK | 203 CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK | 204 CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK | 205 CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK | 206 CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK); 207 } 208 209 if (def != data) 210 WREG32_PCIE(smnCPM_CONTROL, data); 211 } 212 213 static void nbio_v2_3_update_medium_grain_light_sleep(struct amdgpu_device *adev, 214 bool enable) 215 { 216 uint32_t def, data; 217 218 def = data = RREG32_PCIE(smnPCIE_CNTL2); 219 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) { 220 data |= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK | 221 PCIE_CNTL2__MST_MEM_LS_EN_MASK | 222 PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK); 223 } else { 224 data &= ~(PCIE_CNTL2__SLV_MEM_LS_EN_MASK | 225 PCIE_CNTL2__MST_MEM_LS_EN_MASK | 226 PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK); 227 } 228 229 if (def != data) 230 WREG32_PCIE(smnPCIE_CNTL2, data); 231 } 232 233 static void nbio_v2_3_get_clockgating_state(struct amdgpu_device *adev, 234 u32 *flags) 235 { 236 int data; 237 238 /* AMD_CG_SUPPORT_BIF_MGCG */ 239 data = RREG32_PCIE(smnCPM_CONTROL); 240 if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK) 241 *flags |= AMD_CG_SUPPORT_BIF_MGCG; 242 243 /* AMD_CG_SUPPORT_BIF_LS */ 244 data = RREG32_PCIE(smnPCIE_CNTL2); 245 if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK) 246 *flags |= AMD_CG_SUPPORT_BIF_LS; 247 } 248 249 static u32 nbio_v2_3_get_hdp_flush_req_offset(struct amdgpu_device *adev) 250 { 251 return SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_GPU_HDP_FLUSH_REQ); 252 } 253 254 static u32 nbio_v2_3_get_hdp_flush_done_offset(struct amdgpu_device *adev) 255 { 256 return SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF_GPU_HDP_FLUSH_DONE); 257 } 258 259 static u32 nbio_v2_3_get_pcie_index_offset(struct amdgpu_device *adev) 260 { 261 return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2); 262 } 263 264 static u32 nbio_v2_3_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_v2_3_hdp_flush_reg = { 270 .ref_and_mask_cp0 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP0_MASK, 271 .ref_and_mask_cp1 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP1_MASK, 272 .ref_and_mask_cp2 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP2_MASK, 273 .ref_and_mask_cp3 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP3_MASK, 274 .ref_and_mask_cp4 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP4_MASK, 275 .ref_and_mask_cp5 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP5_MASK, 276 .ref_and_mask_cp6 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP6_MASK, 277 .ref_and_mask_cp7 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP7_MASK, 278 .ref_and_mask_cp8 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP8_MASK, 279 .ref_and_mask_cp9 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP9_MASK, 280 .ref_and_mask_sdma0 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__SDMA0_MASK, 281 .ref_and_mask_sdma1 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__SDMA1_MASK, 282 }; 283 284 static void nbio_v2_3_detect_hw_virt(struct amdgpu_device *adev) 285 { 286 uint32_t reg; 287 288 reg = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_RCC_IOV_FUNC_IDENTIFIER); 289 if (reg & 1) 290 adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF; 291 292 if (reg & 0x80000000) 293 adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV; 294 295 if (!reg) { 296 if (is_virtual_machine()) /* passthrough mode exclus sriov mod */ 297 adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE; 298 } 299 } 300 301 static void nbio_v2_3_init_registers(struct amdgpu_device *adev) 302 { 303 uint32_t def, data; 304 305 def = data = RREG32_PCIE(smnPCIE_CONFIG_CNTL); 306 data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL, CI_SWUS_MAX_READ_REQUEST_SIZE_MODE, 1); 307 data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL, CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV, 1); 308 309 if (def != data) 310 WREG32_PCIE(smnPCIE_CONFIG_CNTL, data); 311 } 312 313 const struct amdgpu_nbio_funcs nbio_v2_3_funcs = { 314 .hdp_flush_reg = &nbio_v2_3_hdp_flush_reg, 315 .get_hdp_flush_req_offset = nbio_v2_3_get_hdp_flush_req_offset, 316 .get_hdp_flush_done_offset = nbio_v2_3_get_hdp_flush_done_offset, 317 .get_pcie_index_offset = nbio_v2_3_get_pcie_index_offset, 318 .get_pcie_data_offset = nbio_v2_3_get_pcie_data_offset, 319 .get_rev_id = nbio_v2_3_get_rev_id, 320 .mc_access_enable = nbio_v2_3_mc_access_enable, 321 .hdp_flush = nbio_v2_3_hdp_flush, 322 .get_memsize = nbio_v2_3_get_memsize, 323 .sdma_doorbell_range = nbio_v2_3_sdma_doorbell_range, 324 .vcn_doorbell_range = nbio_v2_3_vcn_doorbell_range, 325 .enable_doorbell_aperture = nbio_v2_3_enable_doorbell_aperture, 326 .enable_doorbell_selfring_aperture = nbio_v2_3_enable_doorbell_selfring_aperture, 327 .ih_doorbell_range = nbio_v2_3_ih_doorbell_range, 328 .update_medium_grain_clock_gating = nbio_v2_3_update_medium_grain_clock_gating, 329 .update_medium_grain_light_sleep = nbio_v2_3_update_medium_grain_light_sleep, 330 .get_clockgating_state = nbio_v2_3_get_clockgating_state, 331 .ih_control = nbio_v2_3_ih_control, 332 .init_registers = nbio_v2_3_init_registers, 333 .detect_hw_virt = nbio_v2_3_detect_hw_virt, 334 }; 335