| 1 | /* |
| 2 | * Copyright © 2016 Intel Corporation |
| 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 (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include <drm/drm_print.h> |
| 26 | |
| 27 | #include "intel_device_info.h" |
| 28 | #include "i915_drv.h" |
| 29 | |
| 30 | #define PLATFORM_NAME(x) [INTEL_##x] = #x |
| 31 | static const char * const platform_names[] = { |
| 32 | PLATFORM_NAME(I830), |
| 33 | PLATFORM_NAME(I845G), |
| 34 | PLATFORM_NAME(I85X), |
| 35 | PLATFORM_NAME(I865G), |
| 36 | PLATFORM_NAME(I915G), |
| 37 | PLATFORM_NAME(I915GM), |
| 38 | PLATFORM_NAME(I945G), |
| 39 | PLATFORM_NAME(I945GM), |
| 40 | PLATFORM_NAME(G33), |
| 41 | PLATFORM_NAME(PINEVIEW), |
| 42 | PLATFORM_NAME(I965G), |
| 43 | PLATFORM_NAME(I965GM), |
| 44 | PLATFORM_NAME(G45), |
| 45 | PLATFORM_NAME(GM45), |
| 46 | PLATFORM_NAME(IRONLAKE), |
| 47 | PLATFORM_NAME(SANDYBRIDGE), |
| 48 | PLATFORM_NAME(IVYBRIDGE), |
| 49 | PLATFORM_NAME(VALLEYVIEW), |
| 50 | PLATFORM_NAME(HASWELL), |
| 51 | PLATFORM_NAME(BROADWELL), |
| 52 | PLATFORM_NAME(CHERRYVIEW), |
| 53 | PLATFORM_NAME(SKYLAKE), |
| 54 | PLATFORM_NAME(BROXTON), |
| 55 | PLATFORM_NAME(KABYLAKE), |
| 56 | PLATFORM_NAME(GEMINILAKE), |
| 57 | PLATFORM_NAME(COFFEELAKE), |
| 58 | PLATFORM_NAME(CANNONLAKE), |
| 59 | PLATFORM_NAME(ICELAKE), |
| 60 | PLATFORM_NAME(ELKHARTLAKE), |
| 61 | PLATFORM_NAME(TIGERLAKE), |
| 62 | }; |
| 63 | #undef PLATFORM_NAME |
| 64 | |
| 65 | const char *intel_platform_name(enum intel_platform platform) |
| 66 | { |
| 67 | BUILD_BUG_ON(ARRAY_SIZE(platform_names) != INTEL_MAX_PLATFORMS); |
| 68 | |
| 69 | if (WARN_ON_ONCE(platform >= ARRAY_SIZE(platform_names) || |
| 70 | platform_names[platform] == NULL)) |
| 71 | return "<unknown>"; |
| 72 | |
| 73 | return platform_names[platform]; |
| 74 | } |
| 75 | |
| 76 | static const char *iommu_name(void) |
| 77 | { |
| 78 | const char *msg = "n/a"; |
| 79 | |
| 80 | #ifdef CONFIG_INTEL_IOMMU |
| 81 | msg = enableddisabled(intel_iommu_gfx_mapped); |
| 82 | #endif |
| 83 | |
| 84 | return msg; |
| 85 | } |
| 86 | |
| 87 | void intel_device_info_print_static(const struct intel_device_info *info, |
| 88 | struct drm_printer *p) |
| 89 | { |
| 90 | drm_printf(p, "engines: %x\n", info->engine_mask); |
| 91 | drm_printf(p, "gen: %d\n", info->gen); |
| 92 | drm_printf(p, "gt: %d\n", info->gt); |
| 93 | drm_printf(p, "iommu: %s\n", iommu_name()); |
| 94 | drm_printf(p, "memory-regions: %x\n", info->memory_regions); |
| 95 | drm_printf(p, "page-sizes: %x\n", info->page_sizes); |
| 96 | drm_printf(p, "platform: %s\n", intel_platform_name(info->platform)); |
| 97 | drm_printf(p, "ppgtt-size: %d\n", info->ppgtt_size); |
| 98 | drm_printf(p, "ppgtt-type: %d\n", info->ppgtt_type); |
| 99 | |
| 100 | #define PRINT_FLAG(name) drm_printf(p, "%s: %s\n", #name, yesno(info->name)); |
| 101 | DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG); |
| 102 | #undef PRINT_FLAG |
| 103 | |
| 104 | #define PRINT_FLAG(name) drm_printf(p, "%s: %s\n", #name, yesno(info->display.name)); |
| 105 | DEV_INFO_DISPLAY_FOR_EACH_FLAG(PRINT_FLAG); |
| 106 | #undef PRINT_FLAG |
| 107 | } |
| 108 | |
| 109 | static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p) |
| 110 | { |
| 111 | int s; |
| 112 | |
| 113 | drm_printf(p, "slice total: %u, mask=%04x\n", |
| 114 | hweight8(sseu->slice_mask), sseu->slice_mask); |
| 115 | drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu)); |
| 116 | for (s = 0; s < sseu->max_slices; s++) { |
| 117 | drm_printf(p, "slice%d: %u subslices, mask=%08x\n", |
| 118 | s, intel_sseu_subslices_per_slice(sseu, s), |
| 119 | intel_sseu_get_subslices(sseu, s)); |
| 120 | } |
| 121 | drm_printf(p, "EU total: %u\n", sseu->eu_total); |
| 122 | drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice); |
| 123 | drm_printf(p, "has slice power gating: %s\n", |
| 124 | yesno(sseu->has_slice_pg)); |
| 125 | drm_printf(p, "has subslice power gating: %s\n", |
| 126 | yesno(sseu->has_subslice_pg)); |
| 127 | drm_printf(p, "has EU power gating: %s\n", yesno(sseu->has_eu_pg)); |
| 128 | } |
| 129 | |
| 130 | void intel_device_info_print_runtime(const struct intel_runtime_info *info, |
| 131 | struct drm_printer *p) |
| 132 | { |
| 133 | sseu_dump(&info->sseu, p); |
| 134 | |
| 135 | drm_printf(p, "CS timestamp frequency: %u kHz\n", |
| 136 | info->cs_timestamp_frequency_khz); |
| 137 | } |
| 138 | |
| 139 | static int sseu_eu_idx(const struct sseu_dev_info *sseu, int slice, |
| 140 | int subslice) |
| 141 | { |
| 142 | int slice_stride = sseu->max_subslices * sseu->eu_stride; |
| 143 | |
| 144 | return slice * slice_stride + subslice * sseu->eu_stride; |
| 145 | } |
| 146 | |
| 147 | static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int slice, |
| 148 | int subslice) |
| 149 | { |
| 150 | int i, offset = sseu_eu_idx(sseu, slice, subslice); |
| 151 | u16 eu_mask = 0; |
| 152 | |
| 153 | for (i = 0; i < sseu->eu_stride; i++) { |
| 154 | eu_mask |= ((u16)sseu->eu_mask[offset + i]) << |
| 155 | (i * BITS_PER_BYTE); |
| 156 | } |
| 157 | |
| 158 | return eu_mask; |
| 159 | } |
| 160 | |
| 161 | static void sseu_set_eus(struct sseu_dev_info *sseu, int slice, int subslice, |
| 162 | u16 eu_mask) |
| 163 | { |
| 164 | int i, offset = sseu_eu_idx(sseu, slice, subslice); |
| 165 | |
| 166 | for (i = 0; i < sseu->eu_stride; i++) { |
| 167 | sseu->eu_mask[offset + i] = |
| 168 | (eu_mask >> (BITS_PER_BYTE * i)) & 0xff; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | void intel_device_info_print_topology(const struct sseu_dev_info *sseu, |
| 173 | struct drm_printer *p) |
| 174 | { |
| 175 | int s, ss; |
| 176 | |
| 177 | if (sseu->max_slices == 0) { |
| 178 | drm_printf(p, "Unavailable\n"); |
| 179 | return; |
| 180 | } |
| 181 | |
| 182 | for (s = 0; s < sseu->max_slices; s++) { |
| 183 | drm_printf(p, "slice%d: %u subslice(s) (0x%08x):\n", |
| 184 | s, intel_sseu_subslices_per_slice(sseu, s), |
| 185 | intel_sseu_get_subslices(sseu, s)); |
| 186 | |
| 187 | for (ss = 0; ss < sseu->max_subslices; ss++) { |
| 188 | u16 enabled_eus = sseu_get_eus(sseu, s, ss); |
| 189 | |
| 190 | drm_printf(p, "\tsubslice%d: %u EUs (0x%hx)\n", |
| 191 | ss, hweight16(enabled_eus), enabled_eus); |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | static u16 compute_eu_total(const struct sseu_dev_info *sseu) |
| 197 | { |
| 198 | u16 i, total = 0; |
| 199 | |
| 200 | for (i = 0; i < ARRAY_SIZE(sseu->eu_mask); i++) |
| 201 | total += hweight8(sseu->eu_mask[i]); |
| 202 | |
| 203 | return total; |
| 204 | } |
| 205 | |
| 206 | static void gen11_compute_sseu_info(struct sseu_dev_info *sseu, |
| 207 | u8 s_en, u32 ss_en, u16 eu_en) |
| 208 | { |
| 209 | int s, ss; |
| 210 | |
| 211 | /* ss_en represents entire subslice mask across all slices */ |
| 212 | GEM_BUG_ON(sseu->max_slices * sseu->max_subslices > |
| 213 | sizeof(ss_en) * BITS_PER_BYTE); |
| 214 | |
| 215 | for (s = 0; s < sseu->max_slices; s++) { |
| 216 | if ((s_en & BIT(s)) == 0) |
| 217 | continue; |
| 218 | |
| 219 | sseu->slice_mask |= BIT(s); |
| 220 | |
| 221 | intel_sseu_set_subslices(sseu, s, ss_en); |
| 222 | |
| 223 | for (ss = 0; ss < sseu->max_subslices; ss++) |
| 224 | if (intel_sseu_has_subslice(sseu, s, ss)) |
| 225 | sseu_set_eus(sseu, s, ss, eu_en); |
| 226 | } |
| 227 | sseu->eu_per_subslice = hweight16(eu_en); |
| 228 | sseu->eu_total = compute_eu_total(sseu); |
| 229 | } |
| 230 | |
| 231 | static void gen12_sseu_info_init(struct drm_i915_private *dev_priv) |
| 232 | { |
| 233 | struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; |
| 234 | u8 s_en; |
| 235 | u32 dss_en; |
| 236 | u16 eu_en = 0; |
| 237 | u8 eu_en_fuse; |
| 238 | int eu; |
| 239 | |
| 240 | /* |
| 241 | * Gen12 has Dual-Subslices, which behave similarly to 2 gen11 SS. |
| 242 | * Instead of splitting these, provide userspace with an array |
| 243 | * of DSS to more closely represent the hardware resource. |
| 244 | */ |
| 245 | intel_sseu_set_info(sseu, 1, 6, 16); |
| 246 | |
| 247 | s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK; |
| 248 | |
| 249 | dss_en = I915_READ(GEN12_GT_DSS_ENABLE); |
| 250 | |
| 251 | /* one bit per pair of EUs */ |
| 252 | eu_en_fuse = ~(I915_READ(GEN11_EU_DISABLE) & GEN11_EU_DIS_MASK); |
| 253 | for (eu = 0; eu < sseu->max_eus_per_subslice / 2; eu++) |
| 254 | if (eu_en_fuse & BIT(eu)) |
| 255 | eu_en |= BIT(eu * 2) | BIT(eu * 2 + 1); |
| 256 | |
| 257 | gen11_compute_sseu_info(sseu, s_en, dss_en, eu_en); |
| 258 | |
| 259 | /* TGL only supports slice-level power gating */ |
| 260 | sseu->has_slice_pg = 1; |
| 261 | } |
| 262 | |
| 263 | static void gen11_sseu_info_init(struct drm_i915_private *dev_priv) |
| 264 | { |
| 265 | struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; |
| 266 | u8 s_en; |
| 267 | u32 ss_en; |
| 268 | u8 eu_en; |
| 269 | |
| 270 | if (IS_ELKHARTLAKE(dev_priv)) |
| 271 | intel_sseu_set_info(sseu, 1, 4, 8); |
| 272 | else |
| 273 | intel_sseu_set_info(sseu, 1, 8, 8); |
| 274 | |
| 275 | s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK; |
| 276 | ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE); |
| 277 | eu_en = ~(I915_READ(GEN11_EU_DISABLE) & GEN11_EU_DIS_MASK); |
| 278 | |
| 279 | gen11_compute_sseu_info(sseu, s_en, ss_en, eu_en); |
| 280 | |
| 281 | /* ICL has no power gating restrictions. */ |
| 282 | sseu->has_slice_pg = 1; |
| 283 | sseu->has_subslice_pg = 1; |
| 284 | sseu->has_eu_pg = 1; |
| 285 | } |
| 286 | |
| 287 | static void gen10_sseu_info_init(struct drm_i915_private *dev_priv) |
| 288 | { |
| 289 | struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; |
| 290 | const u32 fuse2 = I915_READ(GEN8_FUSE2); |
| 291 | int s, ss; |
| 292 | const int eu_mask = 0xff; |
| 293 | u32 subslice_mask, eu_en; |
| 294 | |
| 295 | intel_sseu_set_info(sseu, 6, 4, 8); |
| 296 | |
| 297 | sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >> |
| 298 | GEN10_F2_S_ENA_SHIFT; |
| 299 | |
| 300 | /* Slice0 */ |
| 301 | eu_en = ~I915_READ(GEN8_EU_DISABLE0); |
| 302 | for (ss = 0; ss < sseu->max_subslices; ss++) |
| 303 | sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) & eu_mask); |
| 304 | /* Slice1 */ |
| 305 | sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask); |
| 306 | eu_en = ~I915_READ(GEN8_EU_DISABLE1); |
| 307 | sseu_set_eus(sseu, 1, 1, eu_en & eu_mask); |
| 308 | /* Slice2 */ |
| 309 | sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask); |
| 310 | sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask); |
| 311 | /* Slice3 */ |
| 312 | sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask); |
| 313 | eu_en = ~I915_READ(GEN8_EU_DISABLE2); |
| 314 | sseu_set_eus(sseu, 3, 1, eu_en & eu_mask); |
| 315 | /* Slice4 */ |
| 316 | sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask); |
| 317 | sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask); |
| 318 | /* Slice5 */ |
| 319 | sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask); |
| 320 | eu_en = ~I915_READ(GEN10_EU_DISABLE3); |
| 321 | sseu_set_eus(sseu, 5, 1, eu_en & eu_mask); |
| 322 | |
| 323 | subslice_mask = (1 << 4) - 1; |
| 324 | subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >> |
| 325 | GEN10_F2_SS_DIS_SHIFT); |
| 326 | |
| 327 | for (s = 0; s < sseu->max_slices; s++) { |
| 328 | u32 subslice_mask_with_eus = subslice_mask; |
| 329 | |
| 330 | for (ss = 0; ss < sseu->max_subslices; ss++) { |
| 331 | if (sseu_get_eus(sseu, s, ss) == 0) |
| 332 | subslice_mask_with_eus &= ~BIT(ss); |
| 333 | } |
| 334 | |
| 335 | /* |
| 336 | * Slice0 can have up to 3 subslices, but there are only 2 in |
| 337 | * slice1/2. |
| 338 | */ |
| 339 | intel_sseu_set_subslices(sseu, s, s == 0 ? |
| 340 | subslice_mask_with_eus : |
| 341 | subslice_mask_with_eus & 0x3); |
| 342 | } |
| 343 | |
| 344 | sseu->eu_total = compute_eu_total(sseu); |
| 345 | |
| 346 | /* |
| 347 | * CNL is expected to always have a uniform distribution |
| 348 | * of EU across subslices with the exception that any one |
| 349 | * EU in any one subslice may be fused off for die |
| 350 | * recovery. |
| 351 | */ |
| 352 | sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ? |
| 353 | DIV_ROUND_UP(sseu->eu_total, |
| 354 | intel_sseu_subslice_total(sseu)) : |
| 355 | 0; |
| 356 | |
| 357 | /* No restrictions on Power Gating */ |
| 358 | sseu->has_slice_pg = 1; |
| 359 | sseu->has_subslice_pg = 1; |
| 360 | sseu->has_eu_pg = 1; |
| 361 | } |
| 362 | |
| 363 | static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv) |
| 364 | { |
| 365 | struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; |
| 366 | u32 fuse; |
| 367 | u8 subslice_mask = 0; |
| 368 | |
| 369 | fuse = I915_READ(CHV_FUSE_GT); |
| 370 | |
| 371 | sseu->slice_mask = BIT(0); |
| 372 | intel_sseu_set_info(sseu, 1, 2, 8); |
| 373 | |
| 374 | if (!(fuse & CHV_FGT_DISABLE_SS0)) { |
| 375 | u8 disabled_mask = |
| 376 | ((fuse & CHV_FGT_EU_DIS_SS0_R0_MASK) >> |
| 377 | CHV_FGT_EU_DIS_SS0_R0_SHIFT) | |
| 378 | (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >> |
| 379 | CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4); |
| 380 | |
| 381 | subslice_mask |= BIT(0); |
| 382 | sseu_set_eus(sseu, 0, 0, ~disabled_mask); |
| 383 | } |
| 384 | |
| 385 | if (!(fuse & CHV_FGT_DISABLE_SS1)) { |
| 386 | u8 disabled_mask = |
| 387 | ((fuse & CHV_FGT_EU_DIS_SS1_R0_MASK) >> |
| 388 | CHV_FGT_EU_DIS_SS1_R0_SHIFT) | |
| 389 | (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >> |
| 390 | CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4); |
| 391 | |
| 392 | subslice_mask |= BIT(1); |
| 393 | sseu_set_eus(sseu, 0, 1, ~disabled_mask); |
| 394 | } |
| 395 | |
| 396 | intel_sseu_set_subslices(sseu, 0, subslice_mask); |
| 397 | |
| 398 | sseu->eu_total = compute_eu_total(sseu); |
| 399 | |
| 400 | /* |
| 401 | * CHV expected to always have a uniform distribution of EU |
| 402 | * across subslices. |
| 403 | */ |
| 404 | sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ? |
| 405 | sseu->eu_total / |
| 406 | intel_sseu_subslice_total(sseu) : |
| 407 | 0; |
| 408 | /* |
| 409 | * CHV supports subslice power gating on devices with more than |
| 410 | * one subslice, and supports EU power gating on devices with |
| 411 | * more than one EU pair per subslice. |
| 412 | */ |
| 413 | sseu->has_slice_pg = 0; |
| 414 | sseu->has_subslice_pg = intel_sseu_subslice_total(sseu) > 1; |
| 415 | sseu->has_eu_pg = (sseu->eu_per_subslice > 2); |
| 416 | } |
| 417 | |
| 418 | static void gen9_sseu_info_init(struct drm_i915_private *dev_priv) |
| 419 | { |
| 420 | struct intel_device_info *info = mkwrite_device_info(dev_priv); |
| 421 | struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; |
| 422 | int s, ss; |
| 423 | u32 fuse2, eu_disable, subslice_mask; |
| 424 | const u8 eu_mask = 0xff; |
| 425 | |
| 426 | fuse2 = I915_READ(GEN8_FUSE2); |
| 427 | sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT; |
| 428 | |
| 429 | /* BXT has a single slice and at most 3 subslices. */ |
| 430 | intel_sseu_set_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3, |
| 431 | IS_GEN9_LP(dev_priv) ? 3 : 4, 8); |
| 432 | |
| 433 | /* |
| 434 | * The subslice disable field is global, i.e. it applies |
| 435 | * to each of the enabled slices. |
| 436 | */ |
| 437 | subslice_mask = (1 << sseu->max_subslices) - 1; |
| 438 | subslice_mask &= ~((fuse2 & GEN9_F2_SS_DIS_MASK) >> |
| 439 | GEN9_F2_SS_DIS_SHIFT); |
| 440 | |
| 441 | /* |
| 442 | * Iterate through enabled slices and subslices to |
| 443 | * count the total enabled EU. |
| 444 | */ |
| 445 | for (s = 0; s < sseu->max_slices; s++) { |
| 446 | if (!(sseu->slice_mask & BIT(s))) |
| 447 | /* skip disabled slice */ |
| 448 | continue; |
| 449 | |
| 450 | intel_sseu_set_subslices(sseu, s, subslice_mask); |
| 451 | |
| 452 | eu_disable = I915_READ(GEN9_EU_DISABLE(s)); |
| 453 | for (ss = 0; ss < sseu->max_subslices; ss++) { |
| 454 | int eu_per_ss; |
| 455 | u8 eu_disabled_mask; |
| 456 | |
| 457 | if (!intel_sseu_has_subslice(sseu, s, ss)) |
| 458 | /* skip disabled subslice */ |
| 459 | continue; |
| 460 | |
| 461 | eu_disabled_mask = (eu_disable >> (ss * 8)) & eu_mask; |
| 462 | |
| 463 | sseu_set_eus(sseu, s, ss, ~eu_disabled_mask); |
| 464 | |
| 465 | eu_per_ss = sseu->max_eus_per_subslice - |
| 466 | hweight8(eu_disabled_mask); |
| 467 | |
| 468 | /* |
| 469 | * Record which subslice(s) has(have) 7 EUs. we |
| 470 | * can tune the hash used to spread work among |
| 471 | * subslices if they are unbalanced. |
| 472 | */ |
| 473 | if (eu_per_ss == 7) |
| 474 | sseu->subslice_7eu[s] |= BIT(ss); |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | sseu->eu_total = compute_eu_total(sseu); |
| 479 | |
| 480 | /* |
| 481 | * SKL is expected to always have a uniform distribution |
| 482 | * of EU across subslices with the exception that any one |
| 483 | * EU in any one subslice may be fused off for die |
| 484 | * recovery. BXT is expected to be perfectly uniform in EU |
| 485 | * distribution. |
| 486 | */ |
| 487 | sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ? |
| 488 | DIV_ROUND_UP(sseu->eu_total, |
| 489 | intel_sseu_subslice_total(sseu)) : |
| 490 | 0; |
| 491 | /* |
| 492 | * SKL+ supports slice power gating on devices with more than |
| 493 | * one slice, and supports EU power gating on devices with |
| 494 | * more than one EU pair per subslice. BXT+ supports subslice |
| 495 | * power gating on devices with more than one subslice, and |
| 496 | * supports EU power gating on devices with more than one EU |
| 497 | * pair per subslice. |
| 498 | */ |
| 499 | sseu->has_slice_pg = |
| 500 | !IS_GEN9_LP(dev_priv) && hweight8(sseu->slice_mask) > 1; |
| 501 | sseu->has_subslice_pg = |
| 502 | IS_GEN9_LP(dev_priv) && intel_sseu_subslice_total(sseu) > 1; |
| 503 | sseu->has_eu_pg = sseu->eu_per_subslice > 2; |
| 504 | |
| 505 | if (IS_GEN9_LP(dev_priv)) { |
| 506 | #define IS_SS_DISABLED(ss) (!(sseu->subslice_mask[0] & BIT(ss))) |
| 507 | info->has_pooled_eu = hweight8(sseu->subslice_mask[0]) == 3; |
| 508 | |
| 509 | sseu->min_eu_in_pool = 0; |
| 510 | if (info->has_pooled_eu) { |
| 511 | if (IS_SS_DISABLED(2) || IS_SS_DISABLED(0)) |
| 512 | sseu->min_eu_in_pool = 3; |
| 513 | else if (IS_SS_DISABLED(1)) |
| 514 | sseu->min_eu_in_pool = 6; |
| 515 | else |
| 516 | sseu->min_eu_in_pool = 9; |
| 517 | } |
| 518 | #undef IS_SS_DISABLED |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv) |
| 523 | { |
| 524 | struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; |
| 525 | int s, ss; |
| 526 | u32 fuse2, subslice_mask, eu_disable[3]; /* s_max */ |
| 527 | |
| 528 | fuse2 = I915_READ(GEN8_FUSE2); |
| 529 | sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT; |
| 530 | intel_sseu_set_info(sseu, 3, 3, 8); |
| 531 | |
| 532 | /* |
| 533 | * The subslice disable field is global, i.e. it applies |
| 534 | * to each of the enabled slices. |
| 535 | */ |
| 536 | subslice_mask = GENMASK(sseu->max_subslices - 1, 0); |
| 537 | subslice_mask &= ~((fuse2 & GEN8_F2_SS_DIS_MASK) >> |
| 538 | GEN8_F2_SS_DIS_SHIFT); |
| 539 | |
| 540 | eu_disable[0] = I915_READ(GEN8_EU_DISABLE0) & GEN8_EU_DIS0_S0_MASK; |
| 541 | eu_disable[1] = (I915_READ(GEN8_EU_DISABLE0) >> GEN8_EU_DIS0_S1_SHIFT) | |
| 542 | ((I915_READ(GEN8_EU_DISABLE1) & GEN8_EU_DIS1_S1_MASK) << |
| 543 | (32 - GEN8_EU_DIS0_S1_SHIFT)); |
| 544 | eu_disable[2] = (I915_READ(GEN8_EU_DISABLE1) >> GEN8_EU_DIS1_S2_SHIFT) | |
| 545 | ((I915_READ(GEN8_EU_DISABLE2) & GEN8_EU_DIS2_S2_MASK) << |
| 546 | (32 - GEN8_EU_DIS1_S2_SHIFT)); |
| 547 | |
| 548 | /* |
| 549 | * Iterate through enabled slices and subslices to |
| 550 | * count the total enabled EU. |
| 551 | */ |
| 552 | for (s = 0; s < sseu->max_slices; s++) { |
| 553 | if (!(sseu->slice_mask & BIT(s))) |
| 554 | /* skip disabled slice */ |
| 555 | continue; |
| 556 | |
| 557 | intel_sseu_set_subslices(sseu, s, subslice_mask); |
| 558 | |
| 559 | for (ss = 0; ss < sseu->max_subslices; ss++) { |
| 560 | u8 eu_disabled_mask; |
| 561 | u32 n_disabled; |
| 562 | |
| 563 | if (!intel_sseu_has_subslice(sseu, s, ss)) |
| 564 | /* skip disabled subslice */ |
| 565 | continue; |
| 566 | |
| 567 | eu_disabled_mask = |
| 568 | eu_disable[s] >> (ss * sseu->max_eus_per_subslice); |
| 569 | |
| 570 | sseu_set_eus(sseu, s, ss, ~eu_disabled_mask); |
| 571 | |
| 572 | n_disabled = hweight8(eu_disabled_mask); |
| 573 | |
| 574 | /* |
| 575 | * Record which subslices have 7 EUs. |
| 576 | */ |
| 577 | if (sseu->max_eus_per_subslice - n_disabled == 7) |
| 578 | sseu->subslice_7eu[s] |= 1 << ss; |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | sseu->eu_total = compute_eu_total(sseu); |
| 583 | |
| 584 | /* |
| 585 | * BDW is expected to always have a uniform distribution of EU across |
| 586 | * subslices with the exception that any one EU in any one subslice may |
| 587 | * be fused off for die recovery. |
| 588 | */ |
| 589 | sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ? |
| 590 | DIV_ROUND_UP(sseu->eu_total, |
| 591 | intel_sseu_subslice_total(sseu)) : |
| 592 | 0; |
| 593 | |
| 594 | /* |
| 595 | * BDW supports slice power gating on devices with more than |
| 596 | * one slice. |
| 597 | */ |
| 598 | sseu->has_slice_pg = hweight8(sseu->slice_mask) > 1; |
| 599 | sseu->has_subslice_pg = 0; |
| 600 | sseu->has_eu_pg = 0; |
| 601 | } |
| 602 | |
| 603 | static void haswell_sseu_info_init(struct drm_i915_private *dev_priv) |
| 604 | { |
| 605 | struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; |
| 606 | u32 fuse1; |
| 607 | u8 subslice_mask = 0; |
| 608 | int s, ss; |
| 609 | |
| 610 | /* |
| 611 | * There isn't a register to tell us how many slices/subslices. We |
| 612 | * work off the PCI-ids here. |
| 613 | */ |
| 614 | switch (INTEL_INFO(dev_priv)->gt) { |
| 615 | default: |
| 616 | MISSING_CASE(INTEL_INFO(dev_priv)->gt); |
| 617 | /* fall through */ |
| 618 | case 1: |
| 619 | sseu->slice_mask = BIT(0); |
| 620 | subslice_mask = BIT(0); |
| 621 | break; |
| 622 | case 2: |
| 623 | sseu->slice_mask = BIT(0); |
| 624 | subslice_mask = BIT(0) | BIT(1); |
| 625 | break; |
| 626 | case 3: |
| 627 | sseu->slice_mask = BIT(0) | BIT(1); |
| 628 | subslice_mask = BIT(0) | BIT(1); |
| 629 | break; |
| 630 | } |
| 631 | |
| 632 | fuse1 = I915_READ(HSW_PAVP_FUSE1); |
| 633 | switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) { |
| 634 | default: |
| 635 | MISSING_CASE((fuse1 & HSW_F1_EU_DIS_MASK) >> |
| 636 | HSW_F1_EU_DIS_SHIFT); |
| 637 | /* fall through */ |
| 638 | case HSW_F1_EU_DIS_10EUS: |
| 639 | sseu->eu_per_subslice = 10; |
| 640 | break; |
| 641 | case HSW_F1_EU_DIS_8EUS: |
| 642 | sseu->eu_per_subslice = 8; |
| 643 | break; |
| 644 | case HSW_F1_EU_DIS_6EUS: |
| 645 | sseu->eu_per_subslice = 6; |
| 646 | break; |
| 647 | } |
| 648 | |
| 649 | intel_sseu_set_info(sseu, hweight8(sseu->slice_mask), |
| 650 | hweight8(subslice_mask), |
| 651 | sseu->eu_per_subslice); |
| 652 | |
| 653 | for (s = 0; s < sseu->max_slices; s++) { |
| 654 | intel_sseu_set_subslices(sseu, s, subslice_mask); |
| 655 | |
| 656 | for (ss = 0; ss < sseu->max_subslices; ss++) { |
| 657 | sseu_set_eus(sseu, s, ss, |
| 658 | (1UL << sseu->eu_per_subslice) - 1); |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | sseu->eu_total = compute_eu_total(sseu); |
| 663 | |
| 664 | /* No powergating for you. */ |
| 665 | sseu->has_slice_pg = 0; |
| 666 | sseu->has_subslice_pg = 0; |
| 667 | sseu->has_eu_pg = 0; |
| 668 | } |
| 669 | |
| 670 | static u32 read_reference_ts_freq(struct drm_i915_private *dev_priv) |
| 671 | { |
| 672 | u32 ts_override = I915_READ(GEN9_TIMESTAMP_OVERRIDE); |
| 673 | u32 base_freq, frac_freq; |
| 674 | |
| 675 | base_freq = ((ts_override & GEN9_TIMESTAMP_OVERRIDE_US_COUNTER_DIVIDER_MASK) >> |
| 676 | GEN9_TIMESTAMP_OVERRIDE_US_COUNTER_DIVIDER_SHIFT) + 1; |
| 677 | base_freq *= 1000; |
| 678 | |
| 679 | frac_freq = ((ts_override & |
| 680 | GEN9_TIMESTAMP_OVERRIDE_US_COUNTER_DENOMINATOR_MASK) >> |
| 681 | GEN9_TIMESTAMP_OVERRIDE_US_COUNTER_DENOMINATOR_SHIFT); |
| 682 | frac_freq = 1000 / (frac_freq + 1); |
| 683 | |
| 684 | return base_freq + frac_freq; |
| 685 | } |
| 686 | |
| 687 | static u32 gen10_get_crystal_clock_freq(struct drm_i915_private *dev_priv, |
| 688 | u32 rpm_config_reg) |
| 689 | { |
| 690 | u32 f19_2_mhz = 19200; |
| 691 | u32 f24_mhz = 24000; |
| 692 | u32 crystal_clock = (rpm_config_reg & |
| 693 | GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_MASK) >> |
| 694 | GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_SHIFT; |
| 695 | |
| 696 | switch (crystal_clock) { |
| 697 | case GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_19_2_MHZ: |
| 698 | return f19_2_mhz; |
| 699 | case GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_24_MHZ: |
| 700 | return f24_mhz; |
| 701 | default: |
| 702 | MISSING_CASE(crystal_clock); |
| 703 | return 0; |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | static u32 gen11_get_crystal_clock_freq(struct drm_i915_private *dev_priv, |
| 708 | u32 rpm_config_reg) |
| 709 | { |
| 710 | u32 f19_2_mhz = 19200; |
| 711 | u32 f24_mhz = 24000; |
| 712 | u32 f25_mhz = 25000; |
| 713 | u32 f38_4_mhz = 38400; |
| 714 | u32 crystal_clock = (rpm_config_reg & |
| 715 | GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_MASK) >> |
| 716 | GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_SHIFT; |
| 717 | |
| 718 | switch (crystal_clock) { |
| 719 | case GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_24_MHZ: |
| 720 | return f24_mhz; |
| 721 | case GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_19_2_MHZ: |
| 722 | return f19_2_mhz; |
| 723 | case GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_38_4_MHZ: |
| 724 | return f38_4_mhz; |
| 725 | case GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_25_MHZ: |
| 726 | return f25_mhz; |
| 727 | default: |
| 728 | MISSING_CASE(crystal_clock); |
| 729 | return 0; |
| 730 | } |
| 731 | } |
| 732 | |
| 733 | static u32 read_timestamp_frequency(struct drm_i915_private *dev_priv) |
| 734 | { |
| 735 | u32 f12_5_mhz = 12500; |
| 736 | u32 f19_2_mhz = 19200; |
| 737 | u32 f24_mhz = 24000; |
| 738 | |
| 739 | if (INTEL_GEN(dev_priv) <= 4) { |
| 740 | /* PRMs say: |
| 741 | * |
| 742 | * "The value in this register increments once every 16 |
| 743 | * hclks." (through the “Clocking Configuration” |
| 744 | * (“CLKCFG”) MCHBAR register) |
| 745 | */ |
| 746 | return dev_priv->rawclk_freq / 16; |
| 747 | } else if (INTEL_GEN(dev_priv) <= 8) { |
| 748 | /* PRMs say: |
| 749 | * |
| 750 | * "The PCU TSC counts 10ns increments; this timestamp |
| 751 | * reflects bits 38:3 of the TSC (i.e. 80ns granularity, |
| 752 | * rolling over every 1.5 hours). |
| 753 | */ |
| 754 | return f12_5_mhz; |
| 755 | } else if (INTEL_GEN(dev_priv) <= 9) { |
| 756 | u32 ctc_reg = I915_READ(CTC_MODE); |
| 757 | u32 freq = 0; |
| 758 | |
| 759 | if ((ctc_reg & CTC_SOURCE_PARAMETER_MASK) == CTC_SOURCE_DIVIDE_LOGIC) { |
| 760 | freq = read_reference_ts_freq(dev_priv); |
| 761 | } else { |
| 762 | freq = IS_GEN9_LP(dev_priv) ? f19_2_mhz : f24_mhz; |
| 763 | |
| 764 | /* Now figure out how the command stream's timestamp |
| 765 | * register increments from this frequency (it might |
| 766 | * increment only every few clock cycle). |
| 767 | */ |
| 768 | freq >>= 3 - ((ctc_reg & CTC_SHIFT_PARAMETER_MASK) >> |
| 769 | CTC_SHIFT_PARAMETER_SHIFT); |
| 770 | } |
| 771 | |
| 772 | return freq; |
| 773 | } else if (INTEL_GEN(dev_priv) <= 12) { |
| 774 | u32 ctc_reg = I915_READ(CTC_MODE); |
| 775 | u32 freq = 0; |
| 776 | |
| 777 | /* First figure out the reference frequency. There are 2 ways |
| 778 | * we can compute the frequency, either through the |
| 779 | * TIMESTAMP_OVERRIDE register or through RPM_CONFIG. CTC_MODE |
| 780 | * tells us which one we should use. |
| 781 | */ |
| 782 | if ((ctc_reg & CTC_SOURCE_PARAMETER_MASK) == CTC_SOURCE_DIVIDE_LOGIC) { |
| 783 | freq = read_reference_ts_freq(dev_priv); |
| 784 | } else { |
| 785 | u32 rpm_config_reg = I915_READ(RPM_CONFIG0); |
| 786 | |
| 787 | if (INTEL_GEN(dev_priv) <= 10) |
| 788 | freq = gen10_get_crystal_clock_freq(dev_priv, |
| 789 | rpm_config_reg); |
| 790 | else |
| 791 | freq = gen11_get_crystal_clock_freq(dev_priv, |
| 792 | rpm_config_reg); |
| 793 | |
| 794 | /* Now figure out how the command stream's timestamp |
| 795 | * register increments from this frequency (it might |
| 796 | * increment only every few clock cycle). |
| 797 | */ |
| 798 | freq >>= 3 - ((rpm_config_reg & |
| 799 | GEN10_RPM_CONFIG0_CTC_SHIFT_PARAMETER_MASK) >> |
| 800 | GEN10_RPM_CONFIG0_CTC_SHIFT_PARAMETER_SHIFT); |
| 801 | } |
| 802 | |
| 803 | return freq; |
| 804 | } |
| 805 | |
| 806 | MISSING_CASE("Unknown gen, unable to read command streamer timestamp frequency\n"); |
| 807 | return 0; |
| 808 | } |
| 809 | |
| 810 | #undef INTEL_VGA_DEVICE |
| 811 | #define INTEL_VGA_DEVICE(id, info) (id) |
| 812 | |
| 813 | static const u16 subplatform_ult_ids[] = { |
| 814 | INTEL_HSW_ULT_GT1_IDS(0), |
| 815 | INTEL_HSW_ULT_GT2_IDS(0), |
| 816 | INTEL_HSW_ULT_GT3_IDS(0), |
| 817 | INTEL_BDW_ULT_GT1_IDS(0), |
| 818 | INTEL_BDW_ULT_GT2_IDS(0), |
| 819 | INTEL_BDW_ULT_GT3_IDS(0), |
| 820 | INTEL_BDW_ULT_RSVD_IDS(0), |
| 821 | INTEL_SKL_ULT_GT1_IDS(0), |
| 822 | INTEL_SKL_ULT_GT2_IDS(0), |
| 823 | INTEL_SKL_ULT_GT3_IDS(0), |
| 824 | INTEL_KBL_ULT_GT1_IDS(0), |
| 825 | INTEL_KBL_ULT_GT2_IDS(0), |
| 826 | INTEL_KBL_ULT_GT3_IDS(0), |
| 827 | INTEL_CFL_U_GT2_IDS(0), |
| 828 | INTEL_CFL_U_GT3_IDS(0), |
| 829 | INTEL_WHL_U_GT1_IDS(0), |
| 830 | INTEL_WHL_U_GT2_IDS(0), |
| 831 | INTEL_WHL_U_GT3_IDS(0), |
| 832 | }; |
| 833 | |
| 834 | static const u16 subplatform_ulx_ids[] = { |
| 835 | INTEL_HSW_ULX_GT1_IDS(0), |
| 836 | INTEL_HSW_ULX_GT2_IDS(0), |
| 837 | INTEL_BDW_ULX_GT1_IDS(0), |
| 838 | INTEL_BDW_ULX_GT2_IDS(0), |
| 839 | INTEL_BDW_ULX_GT3_IDS(0), |
| 840 | INTEL_BDW_ULX_RSVD_IDS(0), |
| 841 | INTEL_SKL_ULX_GT1_IDS(0), |
| 842 | INTEL_SKL_ULX_GT2_IDS(0), |
| 843 | INTEL_KBL_ULX_GT1_IDS(0), |
| 844 | INTEL_KBL_ULX_GT2_IDS(0), |
| 845 | INTEL_AML_KBL_GT2_IDS(0), |
| 846 | INTEL_AML_CFL_GT2_IDS(0), |
| 847 | }; |
| 848 | |
| 849 | static const u16 subplatform_portf_ids[] = { |
| 850 | INTEL_CNL_PORT_F_IDS(0), |
| 851 | INTEL_ICL_PORT_F_IDS(0), |
| 852 | }; |
| 853 | |
| 854 | static bool find_devid(u16 id, const u16 *p, unsigned int num) |
| 855 | { |
| 856 | for (; num; num--, p++) { |
| 857 | if (*p == id) |
| 858 | return true; |
| 859 | } |
| 860 | |
| 861 | return false; |
| 862 | } |
| 863 | |
| 864 | void intel_device_info_subplatform_init(struct drm_i915_private *i915) |
| 865 | { |
| 866 | const struct intel_device_info *info = INTEL_INFO(i915); |
| 867 | const struct intel_runtime_info *rinfo = RUNTIME_INFO(i915); |
| 868 | const unsigned int pi = __platform_mask_index(rinfo, info->platform); |
| 869 | const unsigned int pb = __platform_mask_bit(rinfo, info->platform); |
| 870 | u16 devid = INTEL_DEVID(i915); |
| 871 | u32 mask = 0; |
| 872 | |
| 873 | /* Make sure IS_<platform> checks are working. */ |
| 874 | RUNTIME_INFO(i915)->platform_mask[pi] = BIT(pb); |
| 875 | |
| 876 | /* Find and mark subplatform bits based on the PCI device id. */ |
| 877 | if (find_devid(devid, subplatform_ult_ids, |
| 878 | ARRAY_SIZE(subplatform_ult_ids))) { |
| 879 | mask = BIT(INTEL_SUBPLATFORM_ULT); |
| 880 | } else if (find_devid(devid, subplatform_ulx_ids, |
| 881 | ARRAY_SIZE(subplatform_ulx_ids))) { |
| 882 | mask = BIT(INTEL_SUBPLATFORM_ULX); |
| 883 | if (IS_HASWELL(i915) || IS_BROADWELL(i915)) { |
| 884 | /* ULX machines are also considered ULT. */ |
| 885 | mask |= BIT(INTEL_SUBPLATFORM_ULT); |
| 886 | } |
| 887 | } else if (find_devid(devid, subplatform_portf_ids, |
| 888 | ARRAY_SIZE(subplatform_portf_ids))) { |
| 889 | mask = BIT(INTEL_SUBPLATFORM_PORTF); |
| 890 | } |
| 891 | |
| 892 | GEM_BUG_ON(mask & ~INTEL_SUBPLATFORM_BITS); |
| 893 | |
| 894 | RUNTIME_INFO(i915)->platform_mask[pi] |= mask; |
| 895 | } |
| 896 | |
| 897 | /** |
| 898 | * intel_device_info_runtime_init - initialize runtime info |
| 899 | * @dev_priv: the i915 device |
| 900 | * |
| 901 | * Determine various intel_device_info fields at runtime. |
| 902 | * |
| 903 | * Use it when either: |
| 904 | * - it's judged too laborious to fill n static structures with the limit |
| 905 | * when a simple if statement does the job, |
| 906 | * - run-time checks (eg read fuse/strap registers) are needed. |
| 907 | * |
| 908 | * This function needs to be called: |
| 909 | * - after the MMIO has been setup as we are reading registers, |
| 910 | * - after the PCH has been detected, |
| 911 | * - before the first usage of the fields it can tweak. |
| 912 | */ |
| 913 | void intel_device_info_runtime_init(struct drm_i915_private *dev_priv) |
| 914 | { |
| 915 | struct intel_device_info *info = mkwrite_device_info(dev_priv); |
| 916 | struct intel_runtime_info *runtime = RUNTIME_INFO(dev_priv); |
| 917 | enum pipe pipe; |
| 918 | |
| 919 | if (INTEL_GEN(dev_priv) >= 10) { |
| 920 | for_each_pipe(dev_priv, pipe) |
| 921 | runtime->num_scalers[pipe] = 2; |
| 922 | } else if (IS_GEN(dev_priv, 9)) { |
| 923 | runtime->num_scalers[PIPE_A] = 2; |
| 924 | runtime->num_scalers[PIPE_B] = 2; |
| 925 | runtime->num_scalers[PIPE_C] = 1; |
| 926 | } |
| 927 | |
| 928 | BUILD_BUG_ON(BITS_PER_TYPE(intel_engine_mask_t) < I915_NUM_ENGINES); |
| 929 | |
| 930 | if (INTEL_GEN(dev_priv) >= 11) |
| 931 | for_each_pipe(dev_priv, pipe) |
| 932 | runtime->num_sprites[pipe] = 6; |
| 933 | else if (IS_GEN(dev_priv, 10) || IS_GEMINILAKE(dev_priv)) |
| 934 | for_each_pipe(dev_priv, pipe) |
| 935 | runtime->num_sprites[pipe] = 3; |
| 936 | else if (IS_BROXTON(dev_priv)) { |
| 937 | /* |
| 938 | * Skylake and Broxton currently don't expose the topmost plane as its |
| 939 | * use is exclusive with the legacy cursor and we only want to expose |
| 940 | * one of those, not both. Until we can safely expose the topmost plane |
| 941 | * as a DRM_PLANE_TYPE_CURSOR with all the features exposed/supported, |
| 942 | * we don't expose the topmost plane at all to prevent ABI breakage |
| 943 | * down the line. |
| 944 | */ |
| 945 | |
| 946 | runtime->num_sprites[PIPE_A] = 2; |
| 947 | runtime->num_sprites[PIPE_B] = 2; |
| 948 | runtime->num_sprites[PIPE_C] = 1; |
| 949 | } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
| 950 | for_each_pipe(dev_priv, pipe) |
| 951 | runtime->num_sprites[pipe] = 2; |
| 952 | } else if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv)) { |
| 953 | for_each_pipe(dev_priv, pipe) |
| 954 | runtime->num_sprites[pipe] = 1; |
| 955 | } |
| 956 | |
| 957 | if (HAS_DISPLAY(dev_priv) && IS_GEN_RANGE(dev_priv, 7, 8) && |
| 958 | HAS_PCH_SPLIT(dev_priv)) { |
| 959 | u32 fuse_strap = I915_READ(FUSE_STRAP); |
| 960 | u32 sfuse_strap = I915_READ(SFUSE_STRAP); |
| 961 | |
| 962 | /* |
| 963 | * SFUSE_STRAP is supposed to have a bit signalling the display |
| 964 | * is fused off. Unfortunately it seems that, at least in |
| 965 | * certain cases, fused off display means that PCH display |
| 966 | * reads don't land anywhere. In that case, we read 0s. |
| 967 | * |
| 968 | * On CPT/PPT, we can detect this case as SFUSE_STRAP_FUSE_LOCK |
| 969 | * should be set when taking over after the firmware. |
| 970 | */ |
| 971 | if (fuse_strap & ILK_INTERNAL_DISPLAY_DISABLE || |
| 972 | sfuse_strap & SFUSE_STRAP_DISPLAY_DISABLED || |
| 973 | (HAS_PCH_CPT(dev_priv) && |
| 974 | !(sfuse_strap & SFUSE_STRAP_FUSE_LOCK))) { |
| 975 | DRM_INFO("Display fused off, disabling\n"); |
| 976 | info->pipe_mask = 0; |
| 977 | } else if (fuse_strap & IVB_PIPE_C_DISABLE) { |
| 978 | DRM_INFO("PipeC fused off\n"); |
| 979 | info->pipe_mask &= ~BIT(PIPE_C); |
| 980 | } |
| 981 | } else if (HAS_DISPLAY(dev_priv) && INTEL_GEN(dev_priv) >= 9) { |
| 982 | u32 dfsm = I915_READ(SKL_DFSM); |
| 983 | u8 enabled_mask = info->pipe_mask; |
| 984 | |
| 985 | if (dfsm & SKL_DFSM_PIPE_A_DISABLE) |
| 986 | enabled_mask &= ~BIT(PIPE_A); |
| 987 | if (dfsm & SKL_DFSM_PIPE_B_DISABLE) |
| 988 | enabled_mask &= ~BIT(PIPE_B); |
| 989 | if (dfsm & SKL_DFSM_PIPE_C_DISABLE) |
| 990 | enabled_mask &= ~BIT(PIPE_C); |
| 991 | if (INTEL_GEN(dev_priv) >= 12 && |
| 992 | (dfsm & TGL_DFSM_PIPE_D_DISABLE)) |
| 993 | enabled_mask &= ~BIT(PIPE_D); |
| 994 | |
| 995 | /* |
| 996 | * At least one pipe should be enabled and if there are |
| 997 | * disabled pipes, they should be the last ones, with no holes |
| 998 | * in the mask. |
| 999 | */ |
| 1000 | if (enabled_mask == 0 || !is_power_of_2(enabled_mask + 1)) |
| 1001 | DRM_ERROR("invalid pipe fuse configuration: enabled_mask=0x%x\n", |
| 1002 | enabled_mask); |
| 1003 | else |
| 1004 | info->pipe_mask = enabled_mask; |
| 1005 | |
| 1006 | if (dfsm & SKL_DFSM_DISPLAY_HDCP_DISABLE) |
| 1007 | info->display.has_hdcp = 0; |
| 1008 | |
| 1009 | if (dfsm & SKL_DFSM_DISPLAY_PM_DISABLE) |
| 1010 | info->display.has_fbc = 0; |
| 1011 | |
| 1012 | if (INTEL_GEN(dev_priv) >= 11 && (dfsm & ICL_DFSM_DMC_DISABLE)) |
| 1013 | info->display.has_csr = 0; |
| 1014 | |
| 1015 | if (INTEL_GEN(dev_priv) >= 10 && |
| 1016 | (dfsm & CNL_DFSM_DISPLAY_DSC_DISABLE)) |
| 1017 | info->display.has_dsc = 0; |
| 1018 | } |
| 1019 | |
| 1020 | /* Initialize slice/subslice/EU info */ |
| 1021 | if (IS_HASWELL(dev_priv)) |
| 1022 | haswell_sseu_info_init(dev_priv); |
| 1023 | else if (IS_CHERRYVIEW(dev_priv)) |
| 1024 | cherryview_sseu_info_init(dev_priv); |
| 1025 | else if (IS_BROADWELL(dev_priv)) |
| 1026 | broadwell_sseu_info_init(dev_priv); |
| 1027 | else if (IS_GEN(dev_priv, 9)) |
| 1028 | gen9_sseu_info_init(dev_priv); |
| 1029 | else if (IS_GEN(dev_priv, 10)) |
| 1030 | gen10_sseu_info_init(dev_priv); |
| 1031 | else if (IS_GEN(dev_priv, 11)) |
| 1032 | gen11_sseu_info_init(dev_priv); |
| 1033 | else if (INTEL_GEN(dev_priv) >= 12) |
| 1034 | gen12_sseu_info_init(dev_priv); |
| 1035 | |
| 1036 | if (IS_GEN(dev_priv, 6) && intel_vtd_active()) { |
| 1037 | DRM_INFO("Disabling ppGTT for VT-d support\n"); |
| 1038 | info->ppgtt_type = INTEL_PPGTT_NONE; |
| 1039 | } |
| 1040 | |
| 1041 | /* Initialize command stream timestamp frequency */ |
| 1042 | runtime->cs_timestamp_frequency_khz = read_timestamp_frequency(dev_priv); |
| 1043 | } |
| 1044 | |
| 1045 | void intel_driver_caps_print(const struct intel_driver_caps *caps, |
| 1046 | struct drm_printer *p) |
| 1047 | { |
| 1048 | drm_printf(p, "Has logical contexts? %s\n", |
| 1049 | yesno(caps->has_logical_contexts)); |
| 1050 | drm_printf(p, "scheduler: %x\n", caps->scheduler); |
| 1051 | } |
| 1052 | |
| 1053 | /* |
| 1054 | * Determine which engines are fused off in our particular hardware. Since the |
| 1055 | * fuse register is in the blitter powerwell, we need forcewake to be ready at |
| 1056 | * this point (but later we need to prune the forcewake domains for engines that |
| 1057 | * are indeed fused off). |
| 1058 | */ |
| 1059 | void intel_device_info_init_mmio(struct drm_i915_private *dev_priv) |
| 1060 | { |
| 1061 | struct intel_device_info *info = mkwrite_device_info(dev_priv); |
| 1062 | unsigned int logical_vdbox = 0; |
| 1063 | unsigned int i; |
| 1064 | u32 media_fuse; |
| 1065 | u16 vdbox_mask; |
| 1066 | u16 vebox_mask; |
| 1067 | |
| 1068 | if (INTEL_GEN(dev_priv) < 11) |
| 1069 | return; |
| 1070 | |
| 1071 | media_fuse = ~I915_READ(GEN11_GT_VEBOX_VDBOX_DISABLE); |
| 1072 | |
| 1073 | vdbox_mask = media_fuse & GEN11_GT_VDBOX_DISABLE_MASK; |
| 1074 | vebox_mask = (media_fuse & GEN11_GT_VEBOX_DISABLE_MASK) >> |
| 1075 | GEN11_GT_VEBOX_DISABLE_SHIFT; |
| 1076 | |
| 1077 | for (i = 0; i < I915_MAX_VCS; i++) { |
| 1078 | if (!HAS_ENGINE(dev_priv, _VCS(i))) { |
| 1079 | vdbox_mask &= ~BIT(i); |
| 1080 | continue; |
| 1081 | } |
| 1082 | |
| 1083 | if (!(BIT(i) & vdbox_mask)) { |
| 1084 | info->engine_mask &= ~BIT(_VCS(i)); |
| 1085 | DRM_DEBUG_DRIVER("vcs%u fused off\n", i); |
| 1086 | continue; |
| 1087 | } |
| 1088 | |
| 1089 | /* |
| 1090 | * In Gen11, only even numbered logical VDBOXes are |
| 1091 | * hooked up to an SFC (Scaler & Format Converter) unit. |
| 1092 | * In TGL each VDBOX has access to an SFC. |
| 1093 | */ |
| 1094 | if (IS_TIGERLAKE(dev_priv) || logical_vdbox++ % 2 == 0) |
| 1095 | RUNTIME_INFO(dev_priv)->vdbox_sfc_access |= BIT(i); |
| 1096 | } |
| 1097 | DRM_DEBUG_DRIVER("vdbox enable: %04x, instances: %04lx\n", |
| 1098 | vdbox_mask, VDBOX_MASK(dev_priv)); |
| 1099 | GEM_BUG_ON(vdbox_mask != VDBOX_MASK(dev_priv)); |
| 1100 | |
| 1101 | for (i = 0; i < I915_MAX_VECS; i++) { |
| 1102 | if (!HAS_ENGINE(dev_priv, _VECS(i))) { |
| 1103 | vebox_mask &= ~BIT(i); |
| 1104 | continue; |
| 1105 | } |
| 1106 | |
| 1107 | if (!(BIT(i) & vebox_mask)) { |
| 1108 | info->engine_mask &= ~BIT(_VECS(i)); |
| 1109 | DRM_DEBUG_DRIVER("vecs%u fused off\n", i); |
| 1110 | } |
| 1111 | } |
| 1112 | DRM_DEBUG_DRIVER("vebox enable: %04x, instances: %04lx\n", |
| 1113 | vebox_mask, VEBOX_MASK(dev_priv)); |
| 1114 | GEM_BUG_ON(vebox_mask != VEBOX_MASK(dev_priv)); |
| 1115 | } |