1 /* 2 * Copyright © 2014 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 * Please try to maintain the following order within this file unless it makes 24 * sense to do otherwise. From top to bottom: 25 * 1. typedefs 26 * 2. #defines, and macros 27 * 3. structure definitions 28 * 4. function prototypes 29 * 30 * Within each section, please try to order by generation in ascending order, 31 * from top to bottom (ie. gen6 on the top, gen8 on the bottom). 32 */ 33 34 #ifndef __I915_GEM_GTT_H__ 35 #define __I915_GEM_GTT_H__ 36 37 #include <linux/io-mapping.h> 38 #include <linux/mm.h> 39 #include <linux/pagevec.h> 40 41 #include "i915_gem_timeline.h" 42 #include "i915_gem_request.h" 43 #include "i915_selftest.h" 44 45 #define I915_GTT_PAGE_SIZE_4K BIT(12) 46 #define I915_GTT_PAGE_SIZE_64K BIT(16) 47 #define I915_GTT_PAGE_SIZE_2M BIT(21) 48 49 #define I915_GTT_PAGE_SIZE I915_GTT_PAGE_SIZE_4K 50 #define I915_GTT_MAX_PAGE_SIZE I915_GTT_PAGE_SIZE_2M 51 52 #define I915_GTT_MIN_ALIGNMENT I915_GTT_PAGE_SIZE 53 54 #define I915_FENCE_REG_NONE -1 55 #define I915_MAX_NUM_FENCES 32 56 /* 32 fences + sign bit for FENCE_REG_NONE */ 57 #define I915_MAX_NUM_FENCE_BITS 6 58 59 struct drm_i915_file_private; 60 struct drm_i915_fence_reg; 61 62 typedef u32 gen6_pte_t; 63 typedef u64 gen8_pte_t; 64 typedef u64 gen8_pde_t; 65 typedef u64 gen8_ppgtt_pdpe_t; 66 typedef u64 gen8_ppgtt_pml4e_t; 67 68 #define ggtt_total_entries(ggtt) ((ggtt)->base.total >> PAGE_SHIFT) 69 70 /* gen6-hsw has bit 11-4 for physical addr bit 39-32 */ 71 #define GEN6_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0xff0)) 72 #define GEN6_PTE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr) 73 #define GEN6_PDE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr) 74 #define GEN6_PTE_CACHE_LLC (2 << 1) 75 #define GEN6_PTE_UNCACHED (1 << 1) 76 #define GEN6_PTE_VALID (1 << 0) 77 78 #define I915_PTES(pte_len) ((unsigned int)(PAGE_SIZE / (pte_len))) 79 #define I915_PTE_MASK(pte_len) (I915_PTES(pte_len) - 1) 80 #define I915_PDES 512 81 #define I915_PDE_MASK (I915_PDES - 1) 82 #define NUM_PTE(pde_shift) (1 << (pde_shift - PAGE_SHIFT)) 83 84 #define GEN6_PTES I915_PTES(sizeof(gen6_pte_t)) 85 #define GEN6_PD_SIZE (I915_PDES * PAGE_SIZE) 86 #define GEN6_PD_ALIGN (PAGE_SIZE * 16) 87 #define GEN6_PDE_SHIFT 22 88 #define GEN6_PDE_VALID (1 << 0) 89 90 #define GEN7_PTE_CACHE_L3_LLC (3 << 1) 91 92 #define BYT_PTE_SNOOPED_BY_CPU_CACHES (1 << 2) 93 #define BYT_PTE_WRITEABLE (1 << 1) 94 95 /* Cacheability Control is a 4-bit value. The low three bits are stored in bits 96 * 3:1 of the PTE, while the fourth bit is stored in bit 11 of the PTE. 97 */ 98 #define HSW_CACHEABILITY_CONTROL(bits) ((((bits) & 0x7) << 1) | \ 99 (((bits) & 0x8) << (11 - 3))) 100 #define HSW_WB_LLC_AGE3 HSW_CACHEABILITY_CONTROL(0x2) 101 #define HSW_WB_LLC_AGE0 HSW_CACHEABILITY_CONTROL(0x3) 102 #define HSW_WB_ELLC_LLC_AGE3 HSW_CACHEABILITY_CONTROL(0x8) 103 #define HSW_WB_ELLC_LLC_AGE0 HSW_CACHEABILITY_CONTROL(0xb) 104 #define HSW_WT_ELLC_LLC_AGE3 HSW_CACHEABILITY_CONTROL(0x7) 105 #define HSW_WT_ELLC_LLC_AGE0 HSW_CACHEABILITY_CONTROL(0x6) 106 #define HSW_PTE_UNCACHED (0) 107 #define HSW_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0x7f0)) 108 #define HSW_PTE_ADDR_ENCODE(addr) HSW_GTT_ADDR_ENCODE(addr) 109 110 /* GEN8 32b style address is defined as a 3 level page table: 111 * 31:30 | 29:21 | 20:12 | 11:0 112 * PDPE | PDE | PTE | offset 113 * The difference as compared to normal x86 3 level page table is the PDPEs are 114 * programmed via register. 115 */ 116 #define GEN8_3LVL_PDPES 4 117 #define GEN8_PDE_SHIFT 21 118 #define GEN8_PDE_MASK 0x1ff 119 #define GEN8_PTE_SHIFT 12 120 #define GEN8_PTE_MASK 0x1ff 121 #define GEN8_PTES I915_PTES(sizeof(gen8_pte_t)) 122 123 /* GEN8 48b style address is defined as a 4 level page table: 124 * 47:39 | 38:30 | 29:21 | 20:12 | 11:0 125 * PML4E | PDPE | PDE | PTE | offset 126 */ 127 #define GEN8_PML4ES_PER_PML4 512 128 #define GEN8_PML4E_SHIFT 39 129 #define GEN8_PML4E_MASK (GEN8_PML4ES_PER_PML4 - 1) 130 #define GEN8_PDPE_SHIFT 30 131 /* NB: GEN8_PDPE_MASK is untrue for 32b platforms, but it has no impact on 32b page 132 * tables */ 133 #define GEN8_PDPE_MASK 0x1ff 134 135 #define PPAT_UNCACHED (_PAGE_PWT | _PAGE_PCD) 136 #define PPAT_CACHED_PDE 0 /* WB LLC */ 137 #define PPAT_CACHED _PAGE_PAT /* WB LLCeLLC */ 138 #define PPAT_DISPLAY_ELLC _PAGE_PCD /* WT eLLC */ 139 140 #define CHV_PPAT_SNOOP (1<<6) 141 #define GEN8_PPAT_AGE(x) ((x)<<4) 142 #define GEN8_PPAT_LLCeLLC (3<<2) 143 #define GEN8_PPAT_LLCELLC (2<<2) 144 #define GEN8_PPAT_LLC (1<<2) 145 #define GEN8_PPAT_WB (3<<0) 146 #define GEN8_PPAT_WT (2<<0) 147 #define GEN8_PPAT_WC (1<<0) 148 #define GEN8_PPAT_UC (0<<0) 149 #define GEN8_PPAT_ELLC_OVERRIDE (0<<2) 150 #define GEN8_PPAT(i, x) ((u64)(x) << ((i) * 8)) 151 152 #define GEN8_PPAT_GET_CA(x) ((x) & 3) 153 #define GEN8_PPAT_GET_TC(x) ((x) & (3 << 2)) 154 #define GEN8_PPAT_GET_AGE(x) ((x) & (3 << 4)) 155 #define CHV_PPAT_GET_SNOOP(x) ((x) & (1 << 6)) 156 157 #define GEN8_PDE_IPS_64K BIT(11) 158 #define GEN8_PDE_PS_2M BIT(7) 159 160 struct sg_table; 161 162 struct intel_rotation_info { 163 struct intel_rotation_plane_info { 164 /* tiles */ 165 unsigned int width, height, stride, offset; 166 } plane[2]; 167 } __packed; 168 169 static inline void assert_intel_rotation_info_is_packed(void) 170 { 171 BUILD_BUG_ON(sizeof(struct intel_rotation_info) != 8*sizeof(unsigned int)); 172 } 173 174 struct intel_partial_info { 175 u64 offset; 176 unsigned int size; 177 } __packed; 178 179 static inline void assert_intel_partial_info_is_packed(void) 180 { 181 BUILD_BUG_ON(sizeof(struct intel_partial_info) != sizeof(u64) + sizeof(unsigned int)); 182 } 183 184 enum i915_ggtt_view_type { 185 I915_GGTT_VIEW_NORMAL = 0, 186 I915_GGTT_VIEW_ROTATED = sizeof(struct intel_rotation_info), 187 I915_GGTT_VIEW_PARTIAL = sizeof(struct intel_partial_info), 188 }; 189 190 static inline void assert_i915_ggtt_view_type_is_unique(void) 191 { 192 /* As we encode the size of each branch inside the union into its type, 193 * we have to be careful that each branch has a unique size. 194 */ 195 switch ((enum i915_ggtt_view_type)0) { 196 case I915_GGTT_VIEW_NORMAL: 197 case I915_GGTT_VIEW_PARTIAL: 198 case I915_GGTT_VIEW_ROTATED: 199 /* gcc complains if these are identical cases */ 200 break; 201 } 202 } 203 204 struct i915_ggtt_view { 205 enum i915_ggtt_view_type type; 206 union { 207 /* Members need to contain no holes/padding */ 208 struct intel_partial_info partial; 209 struct intel_rotation_info rotated; 210 }; 211 }; 212 213 enum i915_cache_level; 214 215 struct i915_vma; 216 217 struct i915_page_dma { 218 struct page *page; 219 int order; 220 union { 221 dma_addr_t daddr; 222 223 /* For gen6/gen7 only. This is the offset in the GGTT 224 * where the page directory entries for PPGTT begin 225 */ 226 u32 ggtt_offset; 227 }; 228 }; 229 230 #define px_base(px) (&(px)->base) 231 #define px_page(px) (px_base(px)->page) 232 #define px_dma(px) (px_base(px)->daddr) 233 234 struct i915_page_table { 235 struct i915_page_dma base; 236 unsigned int used_ptes; 237 }; 238 239 struct i915_page_directory { 240 struct i915_page_dma base; 241 242 struct i915_page_table *page_table[I915_PDES]; /* PDEs */ 243 unsigned int used_pdes; 244 }; 245 246 struct i915_page_directory_pointer { 247 struct i915_page_dma base; 248 struct i915_page_directory **page_directory; 249 unsigned int used_pdpes; 250 }; 251 252 struct i915_pml4 { 253 struct i915_page_dma base; 254 struct i915_page_directory_pointer *pdps[GEN8_PML4ES_PER_PML4]; 255 }; 256 257 struct i915_address_space { 258 struct drm_mm mm; 259 struct i915_gem_timeline timeline; 260 struct drm_i915_private *i915; 261 struct device *dma; 262 /* Every address space belongs to a struct file - except for the global 263 * GTT that is owned by the driver (and so @file is set to NULL). In 264 * principle, no information should leak from one context to another 265 * (or between files/processes etc) unless explicitly shared by the 266 * owner. Tracking the owner is important in order to free up per-file 267 * objects along with the file, to aide resource tracking, and to 268 * assign blame. 269 */ 270 struct drm_i915_file_private *file; 271 struct list_head global_link; 272 u64 total; /* size addr space maps (ex. 2GB for ggtt) */ 273 u64 reserved; /* size addr space reserved */ 274 275 bool closed; 276 277 struct i915_page_dma scratch_page; 278 struct i915_page_table *scratch_pt; 279 struct i915_page_directory *scratch_pd; 280 struct i915_page_directory_pointer *scratch_pdp; /* GEN8+ & 48b PPGTT */ 281 282 /** 283 * List of objects currently involved in rendering. 284 * 285 * Includes buffers having the contents of their GPU caches 286 * flushed, not necessarily primitives. last_read_req 287 * represents when the rendering involved will be completed. 288 * 289 * A reference is held on the buffer while on this list. 290 */ 291 struct list_head active_list; 292 293 /** 294 * LRU list of objects which are not in the ringbuffer and 295 * are ready to unbind, but are still in the GTT. 296 * 297 * last_read_req is NULL while an object is in this list. 298 * 299 * A reference is not held on the buffer while on this list, 300 * as merely being GTT-bound shouldn't prevent its being 301 * freed, and we'll pull it off the list in the free path. 302 */ 303 struct list_head inactive_list; 304 305 /** 306 * List of vma that have been unbound. 307 * 308 * A reference is not held on the buffer while on this list. 309 */ 310 struct list_head unbound_list; 311 312 struct pagevec free_pages; 313 bool pt_kmap_wc; 314 315 /* FIXME: Need a more generic return type */ 316 gen6_pte_t (*pte_encode)(dma_addr_t addr, 317 enum i915_cache_level level, 318 u32 flags); /* Create a valid PTE */ 319 /* flags for pte_encode */ 320 #define PTE_READ_ONLY (1<<0) 321 int (*allocate_va_range)(struct i915_address_space *vm, 322 u64 start, u64 length); 323 void (*clear_range)(struct i915_address_space *vm, 324 u64 start, u64 length); 325 void (*insert_page)(struct i915_address_space *vm, 326 dma_addr_t addr, 327 u64 offset, 328 enum i915_cache_level cache_level, 329 u32 flags); 330 void (*insert_entries)(struct i915_address_space *vm, 331 struct i915_vma *vma, 332 enum i915_cache_level cache_level, 333 u32 flags); 334 void (*cleanup)(struct i915_address_space *vm); 335 /** Unmap an object from an address space. This usually consists of 336 * setting the valid PTE entries to a reserved scratch page. */ 337 void (*unbind_vma)(struct i915_vma *vma); 338 /* Map an object into an address space with the given cache flags. */ 339 int (*bind_vma)(struct i915_vma *vma, 340 enum i915_cache_level cache_level, 341 u32 flags); 342 int (*set_pages)(struct i915_vma *vma); 343 void (*clear_pages)(struct i915_vma *vma); 344 345 I915_SELFTEST_DECLARE(struct fault_attr fault_attr); 346 }; 347 348 #define i915_is_ggtt(V) (!(V)->file) 349 350 static inline bool 351 i915_vm_is_48bit(const struct i915_address_space *vm) 352 { 353 return (vm->total - 1) >> 32; 354 } 355 356 static inline bool 357 i915_vm_has_scratch_64K(struct i915_address_space *vm) 358 { 359 return vm->scratch_page.order == get_order(I915_GTT_PAGE_SIZE_64K); 360 } 361 362 /* The Graphics Translation Table is the way in which GEN hardware translates a 363 * Graphics Virtual Address into a Physical Address. In addition to the normal 364 * collateral associated with any va->pa translations GEN hardware also has a 365 * portion of the GTT which can be mapped by the CPU and remain both coherent 366 * and correct (in cases like swizzling). That region is referred to as GMADR in 367 * the spec. 368 */ 369 struct i915_ggtt { 370 struct i915_address_space base; 371 372 struct io_mapping iomap; /* Mapping to our CPU mappable region */ 373 struct resource gmadr; /* GMADR resource */ 374 resource_size_t mappable_end; /* End offset that we can CPU map */ 375 376 /** "Graphics Stolen Memory" holds the global PTEs */ 377 void __iomem *gsm; 378 void (*invalidate)(struct drm_i915_private *dev_priv); 379 380 bool do_idle_maps; 381 382 int mtrr; 383 384 struct drm_mm_node error_capture; 385 }; 386 387 struct i915_hw_ppgtt { 388 struct i915_address_space base; 389 struct kref ref; 390 struct drm_mm_node node; 391 unsigned long pd_dirty_rings; 392 union { 393 struct i915_pml4 pml4; /* GEN8+ & 48b PPGTT */ 394 struct i915_page_directory_pointer pdp; /* GEN8+ */ 395 struct i915_page_directory pd; /* GEN6-7 */ 396 }; 397 398 gen6_pte_t __iomem *pd_addr; 399 400 int (*switch_mm)(struct i915_hw_ppgtt *ppgtt, 401 struct drm_i915_gem_request *req); 402 void (*debug_dump)(struct i915_hw_ppgtt *ppgtt, struct seq_file *m); 403 }; 404 405 /* 406 * gen6_for_each_pde() iterates over every pde from start until start+length. 407 * If start and start+length are not perfectly divisible, the macro will round 408 * down and up as needed. Start=0 and length=2G effectively iterates over 409 * every PDE in the system. The macro modifies ALL its parameters except 'pd', 410 * so each of the other parameters should preferably be a simple variable, or 411 * at most an lvalue with no side-effects! 412 */ 413 #define gen6_for_each_pde(pt, pd, start, length, iter) \ 414 for (iter = gen6_pde_index(start); \ 415 length > 0 && iter < I915_PDES && \ 416 (pt = (pd)->page_table[iter], true); \ 417 ({ u32 temp = ALIGN(start+1, 1 << GEN6_PDE_SHIFT); \ 418 temp = min(temp - start, length); \ 419 start += temp, length -= temp; }), ++iter) 420 421 #define gen6_for_all_pdes(pt, pd, iter) \ 422 for (iter = 0; \ 423 iter < I915_PDES && \ 424 (pt = (pd)->page_table[iter], true); \ 425 ++iter) 426 427 static inline u32 i915_pte_index(u64 address, unsigned int pde_shift) 428 { 429 const u32 mask = NUM_PTE(pde_shift) - 1; 430 431 return (address >> PAGE_SHIFT) & mask; 432 } 433 434 /* Helper to counts the number of PTEs within the given length. This count 435 * does not cross a page table boundary, so the max value would be 436 * GEN6_PTES for GEN6, and GEN8_PTES for GEN8. 437 */ 438 static inline u32 i915_pte_count(u64 addr, u64 length, unsigned int pde_shift) 439 { 440 const u64 mask = ~((1ULL << pde_shift) - 1); 441 u64 end; 442 443 WARN_ON(length == 0); 444 WARN_ON(offset_in_page(addr|length)); 445 446 end = addr + length; 447 448 if ((addr & mask) != (end & mask)) 449 return NUM_PTE(pde_shift) - i915_pte_index(addr, pde_shift); 450 451 return i915_pte_index(end, pde_shift) - i915_pte_index(addr, pde_shift); 452 } 453 454 static inline u32 i915_pde_index(u64 addr, u32 shift) 455 { 456 return (addr >> shift) & I915_PDE_MASK; 457 } 458 459 static inline u32 gen6_pte_index(u32 addr) 460 { 461 return i915_pte_index(addr, GEN6_PDE_SHIFT); 462 } 463 464 static inline u32 gen6_pte_count(u32 addr, u32 length) 465 { 466 return i915_pte_count(addr, length, GEN6_PDE_SHIFT); 467 } 468 469 static inline u32 gen6_pde_index(u32 addr) 470 { 471 return i915_pde_index(addr, GEN6_PDE_SHIFT); 472 } 473 474 static inline unsigned int 475 i915_pdpes_per_pdp(const struct i915_address_space *vm) 476 { 477 if (i915_vm_is_48bit(vm)) 478 return GEN8_PML4ES_PER_PML4; 479 480 return GEN8_3LVL_PDPES; 481 } 482 483 /* Equivalent to the gen6 version, For each pde iterates over every pde 484 * between from start until start + length. On gen8+ it simply iterates 485 * over every page directory entry in a page directory. 486 */ 487 #define gen8_for_each_pde(pt, pd, start, length, iter) \ 488 for (iter = gen8_pde_index(start); \ 489 length > 0 && iter < I915_PDES && \ 490 (pt = (pd)->page_table[iter], true); \ 491 ({ u64 temp = ALIGN(start+1, 1 << GEN8_PDE_SHIFT); \ 492 temp = min(temp - start, length); \ 493 start += temp, length -= temp; }), ++iter) 494 495 #define gen8_for_each_pdpe(pd, pdp, start, length, iter) \ 496 for (iter = gen8_pdpe_index(start); \ 497 length > 0 && iter < i915_pdpes_per_pdp(vm) && \ 498 (pd = (pdp)->page_directory[iter], true); \ 499 ({ u64 temp = ALIGN(start+1, 1 << GEN8_PDPE_SHIFT); \ 500 temp = min(temp - start, length); \ 501 start += temp, length -= temp; }), ++iter) 502 503 #define gen8_for_each_pml4e(pdp, pml4, start, length, iter) \ 504 for (iter = gen8_pml4e_index(start); \ 505 length > 0 && iter < GEN8_PML4ES_PER_PML4 && \ 506 (pdp = (pml4)->pdps[iter], true); \ 507 ({ u64 temp = ALIGN(start+1, 1ULL << GEN8_PML4E_SHIFT); \ 508 temp = min(temp - start, length); \ 509 start += temp, length -= temp; }), ++iter) 510 511 static inline u32 gen8_pte_index(u64 address) 512 { 513 return i915_pte_index(address, GEN8_PDE_SHIFT); 514 } 515 516 static inline u32 gen8_pde_index(u64 address) 517 { 518 return i915_pde_index(address, GEN8_PDE_SHIFT); 519 } 520 521 static inline u32 gen8_pdpe_index(u64 address) 522 { 523 return (address >> GEN8_PDPE_SHIFT) & GEN8_PDPE_MASK; 524 } 525 526 static inline u32 gen8_pml4e_index(u64 address) 527 { 528 return (address >> GEN8_PML4E_SHIFT) & GEN8_PML4E_MASK; 529 } 530 531 static inline u64 gen8_pte_count(u64 address, u64 length) 532 { 533 return i915_pte_count(address, length, GEN8_PDE_SHIFT); 534 } 535 536 static inline dma_addr_t 537 i915_page_dir_dma_addr(const struct i915_hw_ppgtt *ppgtt, const unsigned n) 538 { 539 return px_dma(ppgtt->pdp.page_directory[n]); 540 } 541 542 static inline struct i915_ggtt * 543 i915_vm_to_ggtt(struct i915_address_space *vm) 544 { 545 GEM_BUG_ON(!i915_is_ggtt(vm)); 546 return container_of(vm, struct i915_ggtt, base); 547 } 548 549 #define INTEL_MAX_PPAT_ENTRIES 8 550 #define INTEL_PPAT_PERFECT_MATCH (~0U) 551 552 struct intel_ppat; 553 554 struct intel_ppat_entry { 555 struct intel_ppat *ppat; 556 struct kref ref; 557 u8 value; 558 }; 559 560 struct intel_ppat { 561 struct intel_ppat_entry entries[INTEL_MAX_PPAT_ENTRIES]; 562 DECLARE_BITMAP(used, INTEL_MAX_PPAT_ENTRIES); 563 DECLARE_BITMAP(dirty, INTEL_MAX_PPAT_ENTRIES); 564 unsigned int max_entries; 565 u8 clear_value; 566 /* 567 * Return a score to show how two PPAT values match, 568 * a INTEL_PPAT_PERFECT_MATCH indicates a perfect match 569 */ 570 unsigned int (*match)(u8 src, u8 dst); 571 void (*update_hw)(struct drm_i915_private *i915); 572 573 struct drm_i915_private *i915; 574 }; 575 576 const struct intel_ppat_entry * 577 intel_ppat_get(struct drm_i915_private *i915, u8 value); 578 void intel_ppat_put(const struct intel_ppat_entry *entry); 579 580 int i915_gem_init_aliasing_ppgtt(struct drm_i915_private *i915); 581 void i915_gem_fini_aliasing_ppgtt(struct drm_i915_private *i915); 582 583 int i915_ggtt_probe_hw(struct drm_i915_private *dev_priv); 584 int i915_ggtt_init_hw(struct drm_i915_private *dev_priv); 585 int i915_ggtt_enable_hw(struct drm_i915_private *dev_priv); 586 void i915_ggtt_enable_guc(struct drm_i915_private *i915); 587 void i915_ggtt_disable_guc(struct drm_i915_private *i915); 588 int i915_gem_init_ggtt(struct drm_i915_private *dev_priv); 589 void i915_ggtt_cleanup_hw(struct drm_i915_private *dev_priv); 590 591 int i915_ppgtt_init_hw(struct drm_i915_private *dev_priv); 592 void i915_ppgtt_release(struct kref *kref); 593 struct i915_hw_ppgtt *i915_ppgtt_create(struct drm_i915_private *dev_priv, 594 struct drm_i915_file_private *fpriv, 595 const char *name); 596 void i915_ppgtt_close(struct i915_address_space *vm); 597 static inline void i915_ppgtt_get(struct i915_hw_ppgtt *ppgtt) 598 { 599 if (ppgtt) 600 kref_get(&ppgtt->ref); 601 } 602 static inline void i915_ppgtt_put(struct i915_hw_ppgtt *ppgtt) 603 { 604 if (ppgtt) 605 kref_put(&ppgtt->ref, i915_ppgtt_release); 606 } 607 608 void i915_check_and_clear_faults(struct drm_i915_private *dev_priv); 609 void i915_gem_suspend_gtt_mappings(struct drm_i915_private *dev_priv); 610 void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv); 611 612 int __must_check i915_gem_gtt_prepare_pages(struct drm_i915_gem_object *obj, 613 struct sg_table *pages); 614 void i915_gem_gtt_finish_pages(struct drm_i915_gem_object *obj, 615 struct sg_table *pages); 616 617 int i915_gem_gtt_reserve(struct i915_address_space *vm, 618 struct drm_mm_node *node, 619 u64 size, u64 offset, unsigned long color, 620 unsigned int flags); 621 622 int i915_gem_gtt_insert(struct i915_address_space *vm, 623 struct drm_mm_node *node, 624 u64 size, u64 alignment, unsigned long color, 625 u64 start, u64 end, unsigned int flags); 626 627 /* Flags used by pin/bind&friends. */ 628 #define PIN_NONBLOCK BIT(0) 629 #define PIN_MAPPABLE BIT(1) 630 #define PIN_ZONE_4G BIT(2) 631 #define PIN_NONFAULT BIT(3) 632 #define PIN_NOEVICT BIT(4) 633 634 #define PIN_MBZ BIT(5) /* I915_VMA_PIN_OVERFLOW */ 635 #define PIN_GLOBAL BIT(6) /* I915_VMA_GLOBAL_BIND */ 636 #define PIN_USER BIT(7) /* I915_VMA_LOCAL_BIND */ 637 #define PIN_UPDATE BIT(8) 638 639 #define PIN_HIGH BIT(9) 640 #define PIN_OFFSET_BIAS BIT(10) 641 #define PIN_OFFSET_FIXED BIT(11) 642 #define PIN_OFFSET_MASK (-I915_GTT_PAGE_SIZE) 643 644 #endif 645