1 /* 2 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. 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 FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 * 23 * Authors: 24 * Eddie Dong <eddie.dong@intel.com> 25 * Kevin Tian <kevin.tian@intel.com> 26 * 27 * Contributors: 28 * Zhi Wang <zhi.a.wang@intel.com> 29 * Changbin Du <changbin.du@intel.com> 30 * Zhenyu Wang <zhenyuw@linux.intel.com> 31 * Tina Zhang <tina.zhang@intel.com> 32 * Bing Niu <bing.niu@intel.com> 33 * 34 */ 35 36 #include "i915_drv.h" 37 #include "gt/intel_context.h" 38 #include "gt/intel_engine_regs.h" 39 #include "gt/intel_gpu_commands.h" 40 #include "gt/intel_gt_regs.h" 41 #include "gt/intel_ring.h" 42 #include "gvt.h" 43 #include "trace.h" 44 45 #define GEN9_MOCS_SIZE 64 46 47 /* Raw offset is appened to each line for convenience. */ 48 static struct engine_mmio gen8_engine_mmio_list[] __cacheline_aligned = { 49 {RCS0, RING_MODE_GEN7(RENDER_RING_BASE), 0xffff, false}, /* 0x229c */ 50 {RCS0, GEN9_CTX_PREEMPT_REG, 0x0, false}, /* 0x2248 */ 51 {RCS0, HWSTAM, 0x0, false}, /* 0x2098 */ 52 {RCS0, INSTPM, 0xffff, true}, /* 0x20c0 */ 53 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 0), 0, false}, /* 0x24d0 */ 54 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 1), 0, false}, /* 0x24d4 */ 55 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 2), 0, false}, /* 0x24d8 */ 56 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 3), 0, false}, /* 0x24dc */ 57 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 4), 0, false}, /* 0x24e0 */ 58 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 5), 0, false}, /* 0x24e4 */ 59 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 6), 0, false}, /* 0x24e8 */ 60 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 7), 0, false}, /* 0x24ec */ 61 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 8), 0, false}, /* 0x24f0 */ 62 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 9), 0, false}, /* 0x24f4 */ 63 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 10), 0, false}, /* 0x24f8 */ 64 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 11), 0, false}, /* 0x24fc */ 65 {RCS0, CACHE_MODE_1, 0xffff, true}, /* 0x7004 */ 66 {RCS0, GEN7_GT_MODE, 0xffff, true}, /* 0x7008 */ 67 {RCS0, CACHE_MODE_0_GEN7, 0xffff, true}, /* 0x7000 */ 68 {RCS0, GEN7_COMMON_SLICE_CHICKEN1, 0xffff, true}, /* 0x7010 */ 69 {RCS0, HDC_CHICKEN0, 0xffff, true}, /* 0x7300 */ 70 {RCS0, VF_GUARDBAND, 0xffff, true}, /* 0x83a4 */ 71 72 {BCS0, RING_GFX_MODE(BLT_RING_BASE), 0xffff, false}, /* 0x2229c */ 73 {BCS0, RING_MI_MODE(BLT_RING_BASE), 0xffff, false}, /* 0x2209c */ 74 {BCS0, RING_INSTPM(BLT_RING_BASE), 0xffff, false}, /* 0x220c0 */ 75 {BCS0, RING_HWSTAM(BLT_RING_BASE), 0x0, false}, /* 0x22098 */ 76 {BCS0, RING_EXCC(BLT_RING_BASE), 0xffff, false}, /* 0x22028 */ 77 {RCS0, INVALID_MMIO_REG, 0, false } /* Terminated */ 78 }; 79 80 static struct engine_mmio gen9_engine_mmio_list[] __cacheline_aligned = { 81 {RCS0, RING_MODE_GEN7(RENDER_RING_BASE), 0xffff, false}, /* 0x229c */ 82 {RCS0, GEN9_CTX_PREEMPT_REG, 0x0, false}, /* 0x2248 */ 83 {RCS0, HWSTAM, 0x0, false}, /* 0x2098 */ 84 {RCS0, INSTPM, 0xffff, true}, /* 0x20c0 */ 85 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 0), 0, false}, /* 0x24d0 */ 86 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 1), 0, false}, /* 0x24d4 */ 87 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 2), 0, false}, /* 0x24d8 */ 88 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 3), 0, false}, /* 0x24dc */ 89 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 4), 0, false}, /* 0x24e0 */ 90 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 5), 0, false}, /* 0x24e4 */ 91 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 6), 0, false}, /* 0x24e8 */ 92 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 7), 0, false}, /* 0x24ec */ 93 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 8), 0, false}, /* 0x24f0 */ 94 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 9), 0, false}, /* 0x24f4 */ 95 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 10), 0, false}, /* 0x24f8 */ 96 {RCS0, RING_FORCE_TO_NONPRIV(RENDER_RING_BASE, 11), 0, false}, /* 0x24fc */ 97 {RCS0, CACHE_MODE_1, 0xffff, true}, /* 0x7004 */ 98 {RCS0, GEN7_GT_MODE, 0xffff, true}, /* 0x7008 */ 99 {RCS0, CACHE_MODE_0_GEN7, 0xffff, true}, /* 0x7000 */ 100 {RCS0, GEN7_COMMON_SLICE_CHICKEN1, 0xffff, true}, /* 0x7010 */ 101 {RCS0, HDC_CHICKEN0, 0xffff, true}, /* 0x7300 */ 102 {RCS0, VF_GUARDBAND, 0xffff, true}, /* 0x83a4 */ 103 104 {RCS0, GEN8_PRIVATE_PAT_LO, 0, false}, /* 0x40e0 */ 105 {RCS0, GEN8_PRIVATE_PAT_HI, 0, false}, /* 0x40e4 */ 106 {RCS0, GEN8_CS_CHICKEN1, 0xffff, true}, /* 0x2580 */ 107 {RCS0, COMMON_SLICE_CHICKEN2, 0xffff, true}, /* 0x7014 */ 108 {RCS0, GEN9_CS_DEBUG_MODE1, 0xffff, false}, /* 0x20ec */ 109 {RCS0, GEN8_L3SQCREG4, 0, false}, /* 0xb118 */ 110 {RCS0, GEN9_SCRATCH1, 0, false}, /* 0xb11c */ 111 {RCS0, GEN9_SCRATCH_LNCF1, 0, false}, /* 0xb008 */ 112 {RCS0, GEN7_HALF_SLICE_CHICKEN1, 0xffff, true}, /* 0xe100 */ 113 {RCS0, HALF_SLICE_CHICKEN2, 0xffff, true}, /* 0xe180 */ 114 {RCS0, HALF_SLICE_CHICKEN3, 0xffff, true}, /* 0xe184 */ 115 {RCS0, GEN9_HALF_SLICE_CHICKEN5, 0xffff, true}, /* 0xe188 */ 116 {RCS0, GEN9_HALF_SLICE_CHICKEN7, 0xffff, true}, /* 0xe194 */ 117 {RCS0, GEN8_ROW_CHICKEN, 0xffff, true}, /* 0xe4f0 */ 118 {RCS0, TRVATTL3PTRDW(0), 0, true}, /* 0x4de0 */ 119 {RCS0, TRVATTL3PTRDW(1), 0, true}, /* 0x4de4 */ 120 {RCS0, TRNULLDETCT, 0, true}, /* 0x4de8 */ 121 {RCS0, TRINVTILEDETCT, 0, true}, /* 0x4dec */ 122 {RCS0, TRVADR, 0, true}, /* 0x4df0 */ 123 {RCS0, TRTTE, 0, true}, /* 0x4df4 */ 124 {RCS0, _MMIO(0x4dfc), 0, true}, 125 126 {BCS0, RING_GFX_MODE(BLT_RING_BASE), 0xffff, false}, /* 0x2229c */ 127 {BCS0, RING_MI_MODE(BLT_RING_BASE), 0xffff, false}, /* 0x2209c */ 128 {BCS0, RING_INSTPM(BLT_RING_BASE), 0xffff, false}, /* 0x220c0 */ 129 {BCS0, RING_HWSTAM(BLT_RING_BASE), 0x0, false}, /* 0x22098 */ 130 {BCS0, RING_EXCC(BLT_RING_BASE), 0xffff, false}, /* 0x22028 */ 131 132 {VCS1, RING_EXCC(GEN8_BSD2_RING_BASE), 0xffff, false}, /* 0x1c028 */ 133 134 {VECS0, RING_EXCC(VEBOX_RING_BASE), 0xffff, false}, /* 0x1a028 */ 135 136 {RCS0, GEN8_HDC_CHICKEN1, 0xffff, true}, /* 0x7304 */ 137 {RCS0, GEN9_CTX_PREEMPT_REG, 0x0, false}, /* 0x2248 */ 138 {RCS0, GEN7_UCGCTL4, 0x0, false}, /* 0x940c */ 139 {RCS0, GAMT_CHKN_BIT_REG, 0x0, false}, /* 0x4ab8 */ 140 141 {RCS0, GEN9_GAMT_ECO_REG_RW_IA, 0x0, false}, /* 0x4ab0 */ 142 {RCS0, GEN9_CSFE_CHICKEN1_RCS, 0xffff, false}, /* 0x20d4 */ 143 {RCS0, _MMIO(0x20D8), 0xffff, true}, /* 0x20d8 */ 144 145 {RCS0, GEN8_GARBCNTL, 0x0, false}, /* 0xb004 */ 146 {RCS0, GEN7_FF_THREAD_MODE, 0x0, false}, /* 0x20a0 */ 147 {RCS0, FF_SLICE_CS_CHICKEN2, 0xffff, false}, /* 0x20e4 */ 148 {RCS0, INVALID_MMIO_REG, 0, false } /* Terminated */ 149 }; 150 151 static struct { 152 bool initialized; 153 u32 control_table[I915_NUM_ENGINES][GEN9_MOCS_SIZE]; 154 u32 l3cc_table[GEN9_MOCS_SIZE / 2]; 155 } gen9_render_mocs; 156 157 static u32 gen9_mocs_mmio_offset_list[] = { 158 [RCS0] = 0xc800, 159 [VCS0] = 0xc900, 160 [VCS1] = 0xca00, 161 [BCS0] = 0xcc00, 162 [VECS0] = 0xcb00, 163 }; 164 165 static void load_render_mocs(const struct intel_engine_cs *engine) 166 { 167 struct intel_gvt *gvt = engine->i915->gvt; 168 struct intel_uncore *uncore = engine->uncore; 169 u32 cnt = gvt->engine_mmio_list.mocs_mmio_offset_list_cnt; 170 u32 *regs = gvt->engine_mmio_list.mocs_mmio_offset_list; 171 i915_reg_t offset; 172 int ring_id, i; 173 174 /* Platform doesn't have mocs mmios. */ 175 if (!regs) 176 return; 177 178 for (ring_id = 0; ring_id < cnt; ring_id++) { 179 if (!HAS_ENGINE(engine->gt, ring_id)) 180 continue; 181 182 offset.reg = regs[ring_id]; 183 for (i = 0; i < GEN9_MOCS_SIZE; i++) { 184 gen9_render_mocs.control_table[ring_id][i] = 185 intel_uncore_read_fw(uncore, offset); 186 offset.reg += 4; 187 } 188 } 189 190 offset.reg = 0xb020; 191 for (i = 0; i < GEN9_MOCS_SIZE / 2; i++) { 192 gen9_render_mocs.l3cc_table[i] = 193 intel_uncore_read_fw(uncore, offset); 194 offset.reg += 4; 195 } 196 gen9_render_mocs.initialized = true; 197 } 198 199 static int 200 restore_context_mmio_for_inhibit(struct intel_vgpu *vgpu, 201 struct i915_request *req) 202 { 203 u32 *cs; 204 int ret; 205 struct engine_mmio *mmio; 206 struct intel_gvt *gvt = vgpu->gvt; 207 int ring_id = req->engine->id; 208 int count = gvt->engine_mmio_list.ctx_mmio_count[ring_id]; 209 210 if (count == 0) 211 return 0; 212 213 ret = req->engine->emit_flush(req, EMIT_BARRIER); 214 if (ret) 215 return ret; 216 217 cs = intel_ring_begin(req, count * 2 + 2); 218 if (IS_ERR(cs)) 219 return PTR_ERR(cs); 220 221 *cs++ = MI_LOAD_REGISTER_IMM(count); 222 for (mmio = gvt->engine_mmio_list.mmio; 223 i915_mmio_reg_valid(mmio->reg); mmio++) { 224 if (mmio->id != ring_id || !mmio->in_context) 225 continue; 226 227 *cs++ = i915_mmio_reg_offset(mmio->reg); 228 *cs++ = vgpu_vreg_t(vgpu, mmio->reg) | (mmio->mask << 16); 229 gvt_dbg_core("add lri reg pair 0x%x:0x%x in inhibit ctx, vgpu:%d, rind_id:%d\n", 230 *(cs-2), *(cs-1), vgpu->id, ring_id); 231 } 232 233 *cs++ = MI_NOOP; 234 intel_ring_advance(req, cs); 235 236 ret = req->engine->emit_flush(req, EMIT_BARRIER); 237 if (ret) 238 return ret; 239 240 return 0; 241 } 242 243 static int 244 restore_render_mocs_control_for_inhibit(struct intel_vgpu *vgpu, 245 struct i915_request *req) 246 { 247 unsigned int index; 248 u32 *cs; 249 250 cs = intel_ring_begin(req, 2 * GEN9_MOCS_SIZE + 2); 251 if (IS_ERR(cs)) 252 return PTR_ERR(cs); 253 254 *cs++ = MI_LOAD_REGISTER_IMM(GEN9_MOCS_SIZE); 255 256 for (index = 0; index < GEN9_MOCS_SIZE; index++) { 257 *cs++ = i915_mmio_reg_offset(GEN9_GFX_MOCS(index)); 258 *cs++ = vgpu_vreg_t(vgpu, GEN9_GFX_MOCS(index)); 259 gvt_dbg_core("add lri reg pair 0x%x:0x%x in inhibit ctx, vgpu:%d, rind_id:%d\n", 260 *(cs-2), *(cs-1), vgpu->id, req->engine->id); 261 262 } 263 264 *cs++ = MI_NOOP; 265 intel_ring_advance(req, cs); 266 267 return 0; 268 } 269 270 static int 271 restore_render_mocs_l3cc_for_inhibit(struct intel_vgpu *vgpu, 272 struct i915_request *req) 273 { 274 unsigned int index; 275 u32 *cs; 276 277 cs = intel_ring_begin(req, 2 * GEN9_MOCS_SIZE / 2 + 2); 278 if (IS_ERR(cs)) 279 return PTR_ERR(cs); 280 281 *cs++ = MI_LOAD_REGISTER_IMM(GEN9_MOCS_SIZE / 2); 282 283 for (index = 0; index < GEN9_MOCS_SIZE / 2; index++) { 284 *cs++ = i915_mmio_reg_offset(GEN9_LNCFCMOCS(index)); 285 *cs++ = vgpu_vreg_t(vgpu, GEN9_LNCFCMOCS(index)); 286 gvt_dbg_core("add lri reg pair 0x%x:0x%x in inhibit ctx, vgpu:%d, rind_id:%d\n", 287 *(cs-2), *(cs-1), vgpu->id, req->engine->id); 288 289 } 290 291 *cs++ = MI_NOOP; 292 intel_ring_advance(req, cs); 293 294 return 0; 295 } 296 297 /* 298 * Use lri command to initialize the mmio which is in context state image for 299 * inhibit context, it contains tracked engine mmio, render_mocs and 300 * render_mocs_l3cc. 301 */ 302 int intel_vgpu_restore_inhibit_context(struct intel_vgpu *vgpu, 303 struct i915_request *req) 304 { 305 int ret; 306 u32 *cs; 307 308 cs = intel_ring_begin(req, 2); 309 if (IS_ERR(cs)) 310 return PTR_ERR(cs); 311 312 *cs++ = MI_ARB_ON_OFF | MI_ARB_DISABLE; 313 *cs++ = MI_NOOP; 314 intel_ring_advance(req, cs); 315 316 ret = restore_context_mmio_for_inhibit(vgpu, req); 317 if (ret) 318 goto out; 319 320 /* no MOCS register in context except render engine */ 321 if (req->engine->id != RCS0) 322 goto out; 323 324 ret = restore_render_mocs_control_for_inhibit(vgpu, req); 325 if (ret) 326 goto out; 327 328 ret = restore_render_mocs_l3cc_for_inhibit(vgpu, req); 329 if (ret) 330 goto out; 331 332 out: 333 cs = intel_ring_begin(req, 2); 334 if (IS_ERR(cs)) 335 return PTR_ERR(cs); 336 337 *cs++ = MI_ARB_ON_OFF | MI_ARB_ENABLE; 338 *cs++ = MI_NOOP; 339 intel_ring_advance(req, cs); 340 341 return ret; 342 } 343 344 static u32 gen8_tlb_mmio_offset_list[] = { 345 [RCS0] = 0x4260, 346 [VCS0] = 0x4264, 347 [VCS1] = 0x4268, 348 [BCS0] = 0x426c, 349 [VECS0] = 0x4270, 350 }; 351 352 static void handle_tlb_pending_event(struct intel_vgpu *vgpu, 353 const struct intel_engine_cs *engine) 354 { 355 struct intel_uncore *uncore = engine->uncore; 356 struct intel_vgpu_submission *s = &vgpu->submission; 357 u32 *regs = vgpu->gvt->engine_mmio_list.tlb_mmio_offset_list; 358 u32 cnt = vgpu->gvt->engine_mmio_list.tlb_mmio_offset_list_cnt; 359 enum forcewake_domains fw; 360 i915_reg_t reg; 361 362 if (!regs) 363 return; 364 365 if (drm_WARN_ON(&engine->i915->drm, engine->id >= cnt)) 366 return; 367 368 if (!test_and_clear_bit(engine->id, (void *)s->tlb_handle_pending)) 369 return; 370 371 reg = _MMIO(regs[engine->id]); 372 373 /* WaForceWakeRenderDuringMmioTLBInvalidate:skl 374 * we need to put a forcewake when invalidating RCS TLB caches, 375 * otherwise device can go to RC6 state and interrupt invalidation 376 * process 377 */ 378 fw = intel_uncore_forcewake_for_reg(uncore, reg, 379 FW_REG_READ | FW_REG_WRITE); 380 if (engine->id == RCS0 && GRAPHICS_VER(engine->i915) >= 9) 381 fw |= FORCEWAKE_RENDER; 382 383 intel_uncore_forcewake_get(uncore, fw); 384 385 intel_uncore_write_fw(uncore, reg, 0x1); 386 387 if (wait_for_atomic(intel_uncore_read_fw(uncore, reg) == 0, 50)) 388 gvt_vgpu_err("timeout in invalidate ring %s tlb\n", 389 engine->name); 390 else 391 vgpu_vreg_t(vgpu, reg) = 0; 392 393 intel_uncore_forcewake_put(uncore, fw); 394 395 gvt_dbg_core("invalidate TLB for ring %s\n", engine->name); 396 } 397 398 static void switch_mocs(struct intel_vgpu *pre, struct intel_vgpu *next, 399 const struct intel_engine_cs *engine) 400 { 401 u32 regs[] = { 402 [RCS0] = 0xc800, 403 [VCS0] = 0xc900, 404 [VCS1] = 0xca00, 405 [BCS0] = 0xcc00, 406 [VECS0] = 0xcb00, 407 }; 408 struct intel_uncore *uncore = engine->uncore; 409 i915_reg_t offset, l3_offset; 410 u32 old_v, new_v; 411 int i; 412 413 if (drm_WARN_ON(&engine->i915->drm, engine->id >= ARRAY_SIZE(regs))) 414 return; 415 416 if (engine->id == RCS0 && GRAPHICS_VER(engine->i915) == 9) 417 return; 418 419 if (!pre && !gen9_render_mocs.initialized) 420 load_render_mocs(engine); 421 422 offset.reg = regs[engine->id]; 423 for (i = 0; i < GEN9_MOCS_SIZE; i++) { 424 if (pre) 425 old_v = vgpu_vreg_t(pre, offset); 426 else 427 old_v = gen9_render_mocs.control_table[engine->id][i]; 428 if (next) 429 new_v = vgpu_vreg_t(next, offset); 430 else 431 new_v = gen9_render_mocs.control_table[engine->id][i]; 432 433 if (old_v != new_v) 434 intel_uncore_write_fw(uncore, offset, new_v); 435 436 offset.reg += 4; 437 } 438 439 if (engine->id == RCS0) { 440 l3_offset.reg = 0xb020; 441 for (i = 0; i < GEN9_MOCS_SIZE / 2; i++) { 442 if (pre) 443 old_v = vgpu_vreg_t(pre, l3_offset); 444 else 445 old_v = gen9_render_mocs.l3cc_table[i]; 446 if (next) 447 new_v = vgpu_vreg_t(next, l3_offset); 448 else 449 new_v = gen9_render_mocs.l3cc_table[i]; 450 451 if (old_v != new_v) 452 intel_uncore_write_fw(uncore, l3_offset, new_v); 453 454 l3_offset.reg += 4; 455 } 456 } 457 } 458 459 #define CTX_CONTEXT_CONTROL_VAL 0x03 460 461 bool is_inhibit_context(struct intel_context *ce) 462 { 463 const u32 *reg_state = ce->lrc_reg_state; 464 u32 inhibit_mask = 465 _MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT); 466 467 return inhibit_mask == 468 (reg_state[CTX_CONTEXT_CONTROL_VAL] & inhibit_mask); 469 } 470 471 /* Switch ring mmio values (context). */ 472 static void switch_mmio(struct intel_vgpu *pre, 473 struct intel_vgpu *next, 474 const struct intel_engine_cs *engine) 475 { 476 struct intel_uncore *uncore = engine->uncore; 477 struct intel_vgpu_submission *s; 478 struct engine_mmio *mmio; 479 u32 old_v, new_v; 480 481 if (GRAPHICS_VER(engine->i915) >= 9) 482 switch_mocs(pre, next, engine); 483 484 for (mmio = engine->i915->gvt->engine_mmio_list.mmio; 485 i915_mmio_reg_valid(mmio->reg); mmio++) { 486 if (mmio->id != engine->id) 487 continue; 488 /* 489 * No need to do save or restore of the mmio which is in context 490 * state image on gen9, it's initialized by lri command and 491 * save or restore with context together. 492 */ 493 if (GRAPHICS_VER(engine->i915) == 9 && mmio->in_context) 494 continue; 495 496 // save 497 if (pre) { 498 vgpu_vreg_t(pre, mmio->reg) = 499 intel_uncore_read_fw(uncore, mmio->reg); 500 if (mmio->mask) 501 vgpu_vreg_t(pre, mmio->reg) &= 502 ~(mmio->mask << 16); 503 old_v = vgpu_vreg_t(pre, mmio->reg); 504 } else { 505 old_v = mmio->value = 506 intel_uncore_read_fw(uncore, mmio->reg); 507 } 508 509 // restore 510 if (next) { 511 s = &next->submission; 512 /* 513 * No need to restore the mmio which is in context state 514 * image if it's not inhibit context, it will restore 515 * itself. 516 */ 517 if (mmio->in_context && 518 !is_inhibit_context(s->shadow[engine->id])) 519 continue; 520 521 if (mmio->mask) 522 new_v = vgpu_vreg_t(next, mmio->reg) | 523 (mmio->mask << 16); 524 else 525 new_v = vgpu_vreg_t(next, mmio->reg); 526 } else { 527 if (mmio->in_context) 528 continue; 529 if (mmio->mask) 530 new_v = mmio->value | (mmio->mask << 16); 531 else 532 new_v = mmio->value; 533 } 534 535 intel_uncore_write_fw(uncore, mmio->reg, new_v); 536 537 trace_render_mmio(pre ? pre->id : 0, 538 next ? next->id : 0, 539 "switch", 540 i915_mmio_reg_offset(mmio->reg), 541 old_v, new_v); 542 } 543 544 if (next) 545 handle_tlb_pending_event(next, engine); 546 } 547 548 /** 549 * intel_gvt_switch_mmio - switch mmio context of specific engine 550 * @pre: the last vGPU that own the engine 551 * @next: the vGPU to switch to 552 * @engine: the engine 553 * 554 * If pre is null indicates that host own the engine. If next is null 555 * indicates that we are switching to host workload. 556 */ 557 void intel_gvt_switch_mmio(struct intel_vgpu *pre, 558 struct intel_vgpu *next, 559 const struct intel_engine_cs *engine) 560 { 561 if (WARN(!pre && !next, "switch ring %s from host to HOST\n", 562 engine->name)) 563 return; 564 565 gvt_dbg_render("switch ring %s from %s to %s\n", engine->name, 566 pre ? "vGPU" : "host", next ? "vGPU" : "HOST"); 567 568 /** 569 * We are using raw mmio access wrapper to improve the 570 * performace for batch mmio read/write, so we need 571 * handle forcewake mannually. 572 */ 573 intel_uncore_forcewake_get(engine->uncore, FORCEWAKE_ALL); 574 switch_mmio(pre, next, engine); 575 intel_uncore_forcewake_put(engine->uncore, FORCEWAKE_ALL); 576 } 577 578 /** 579 * intel_gvt_init_engine_mmio_context - Initiate the engine mmio list 580 * @gvt: GVT device 581 * 582 */ 583 void intel_gvt_init_engine_mmio_context(struct intel_gvt *gvt) 584 { 585 struct engine_mmio *mmio; 586 587 if (GRAPHICS_VER(gvt->gt->i915) >= 9) { 588 gvt->engine_mmio_list.mmio = gen9_engine_mmio_list; 589 gvt->engine_mmio_list.tlb_mmio_offset_list = gen8_tlb_mmio_offset_list; 590 gvt->engine_mmio_list.tlb_mmio_offset_list_cnt = ARRAY_SIZE(gen8_tlb_mmio_offset_list); 591 gvt->engine_mmio_list.mocs_mmio_offset_list = gen9_mocs_mmio_offset_list; 592 gvt->engine_mmio_list.mocs_mmio_offset_list_cnt = ARRAY_SIZE(gen9_mocs_mmio_offset_list); 593 } else { 594 gvt->engine_mmio_list.mmio = gen8_engine_mmio_list; 595 gvt->engine_mmio_list.tlb_mmio_offset_list = gen8_tlb_mmio_offset_list; 596 gvt->engine_mmio_list.tlb_mmio_offset_list_cnt = ARRAY_SIZE(gen8_tlb_mmio_offset_list); 597 } 598 599 for (mmio = gvt->engine_mmio_list.mmio; 600 i915_mmio_reg_valid(mmio->reg); mmio++) { 601 if (mmio->in_context) { 602 gvt->engine_mmio_list.ctx_mmio_count[mmio->id]++; 603 intel_gvt_mmio_set_sr_in_ctx(gvt, mmio->reg.reg); 604 } 605 } 606 } 607