1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * SN Platform GRU Driver 4 * 5 * GRU DRIVER TABLES, MACROS, externs, etc 6 * 7 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. 8 */ 9 10 #ifndef __GRUTABLES_H__ 11 #define __GRUTABLES_H__ 12 13 /* 14 * GRU Chiplet: 15 * The GRU is a user addressible memory accelerator. It provides 16 * several forms of load, store, memset, bcopy instructions. In addition, it 17 * contains special instructions for AMOs, sending messages to message 18 * queues, etc. 19 * 20 * The GRU is an integral part of the node controller. It connects 21 * directly to the cpu socket. In its current implementation, there are 2 22 * GRU chiplets in the node controller on each blade (~node). 23 * 24 * The entire GRU memory space is fully coherent and cacheable by the cpus. 25 * 26 * Each GRU chiplet has a physical memory map that looks like the following: 27 * 28 * +-----------------+ 29 * |/////////////////| 30 * |/////////////////| 31 * |/////////////////| 32 * |/////////////////| 33 * |/////////////////| 34 * |/////////////////| 35 * |/////////////////| 36 * |/////////////////| 37 * +-----------------+ 38 * | system control | 39 * +-----------------+ _______ +-------------+ 40 * |/////////////////| / | | 41 * |/////////////////| / | | 42 * |/////////////////| / | instructions| 43 * |/////////////////| / | | 44 * |/////////////////| / | | 45 * |/////////////////| / |-------------| 46 * |/////////////////| / | | 47 * +-----------------+ | | 48 * | context 15 | | data | 49 * +-----------------+ | | 50 * | ...... | \ | | 51 * +-----------------+ \____________ +-------------+ 52 * | context 1 | 53 * +-----------------+ 54 * | context 0 | 55 * +-----------------+ 56 * 57 * Each of the "contexts" is a chunk of memory that can be mmaped into user 58 * space. The context consists of 2 parts: 59 * 60 * - an instruction space that can be directly accessed by the user 61 * to issue GRU instructions and to check instruction status. 62 * 63 * - a data area that acts as normal RAM. 64 * 65 * User instructions contain virtual addresses of data to be accessed by the 66 * GRU. The GRU contains a TLB that is used to convert these user virtual 67 * addresses to physical addresses. 68 * 69 * The "system control" area of the GRU chiplet is used by the kernel driver 70 * to manage user contexts and to perform functions such as TLB dropin and 71 * purging. 72 * 73 * One context may be reserved for the kernel and used for cross-partition 74 * communication. The GRU will also be used to asynchronously zero out 75 * large blocks of memory (not currently implemented). 76 * 77 * 78 * Tables: 79 * 80 * VDATA-VMA Data - Holds a few parameters. Head of linked list of 81 * GTS tables for threads using the GSEG 82 * GTS - Gru Thread State - contains info for managing a GSEG context. A 83 * GTS is allocated for each thread accessing a 84 * GSEG. 85 * GTD - GRU Thread Data - contains shadow copy of GRU data when GSEG is 86 * not loaded into a GRU 87 * GMS - GRU Memory Struct - Used to manage TLB shootdowns. Tracks GRUs 88 * where a GSEG has been loaded. Similar to 89 * an mm_struct but for GRU. 90 * 91 * GS - GRU State - Used to manage the state of a GRU chiplet 92 * BS - Blade State - Used to manage state of all GRU chiplets 93 * on a blade 94 * 95 * 96 * Normal task tables for task using GRU. 97 * - 2 threads in process 98 * - 2 GSEGs open in process 99 * - GSEG1 is being used by both threads 100 * - GSEG2 is used only by thread 2 101 * 102 * task -->| 103 * task ---+---> mm ->------ (notifier) -------+-> gms 104 * | | 105 * |--> vma -> vdata ---> gts--->| GSEG1 (thread1) 106 * | | | 107 * | +-> gts--->| GSEG1 (thread2) 108 * | | 109 * |--> vma -> vdata ---> gts--->| GSEG2 (thread2) 110 * . 111 * . 112 * 113 * GSEGs are marked DONTCOPY on fork 114 * 115 * At open 116 * file.private_data -> NULL 117 * 118 * At mmap, 119 * vma -> vdata 120 * 121 * After gseg reference 122 * vma -> vdata ->gts 123 * 124 * After fork 125 * parent 126 * vma -> vdata -> gts 127 * child 128 * (vma is not copied) 129 * 130 */ 131 132 #include <linux/refcount.h> 133 #include <linux/rmap.h> 134 #include <linux/interrupt.h> 135 #include <linux/mutex.h> 136 #include <linux/wait.h> 137 #include <linux/mmu_notifier.h> 138 #include <linux/mm_types.h> 139 #include "gru.h" 140 #include "grulib.h" 141 #include "gruhandles.h" 142 143 extern struct gru_stats_s gru_stats; 144 extern struct gru_blade_state *gru_base[]; 145 extern unsigned long gru_start_paddr, gru_end_paddr; 146 extern void *gru_start_vaddr; 147 extern unsigned int gru_max_gids; 148 149 #define GRU_MAX_BLADES MAX_NUMNODES 150 #define GRU_MAX_GRUS (GRU_MAX_BLADES * GRU_CHIPLETS_PER_BLADE) 151 152 #define GRU_DRIVER_ID_STR "SGI GRU Device Driver" 153 #define GRU_DRIVER_VERSION_STR "0.85" 154 155 /* 156 * GRU statistics. 157 */ 158 struct gru_stats_s { 159 atomic_long_t vdata_alloc; 160 atomic_long_t vdata_free; 161 atomic_long_t gts_alloc; 162 atomic_long_t gts_free; 163 atomic_long_t gms_alloc; 164 atomic_long_t gms_free; 165 atomic_long_t gts_double_allocate; 166 atomic_long_t assign_context; 167 atomic_long_t assign_context_failed; 168 atomic_long_t free_context; 169 atomic_long_t load_user_context; 170 atomic_long_t load_kernel_context; 171 atomic_long_t lock_kernel_context; 172 atomic_long_t unlock_kernel_context; 173 atomic_long_t steal_user_context; 174 atomic_long_t steal_kernel_context; 175 atomic_long_t steal_context_failed; 176 atomic_long_t nopfn; 177 atomic_long_t asid_new; 178 atomic_long_t asid_next; 179 atomic_long_t asid_wrap; 180 atomic_long_t asid_reuse; 181 atomic_long_t intr; 182 atomic_long_t intr_cbr; 183 atomic_long_t intr_tfh; 184 atomic_long_t intr_spurious; 185 atomic_long_t intr_mm_lock_failed; 186 atomic_long_t call_os; 187 atomic_long_t call_os_wait_queue; 188 atomic_long_t user_flush_tlb; 189 atomic_long_t user_unload_context; 190 atomic_long_t user_exception; 191 atomic_long_t set_context_option; 192 atomic_long_t check_context_retarget_intr; 193 atomic_long_t check_context_unload; 194 atomic_long_t tlb_dropin; 195 atomic_long_t tlb_preload_page; 196 atomic_long_t tlb_dropin_fail_no_asid; 197 atomic_long_t tlb_dropin_fail_upm; 198 atomic_long_t tlb_dropin_fail_invalid; 199 atomic_long_t tlb_dropin_fail_range_active; 200 atomic_long_t tlb_dropin_fail_idle; 201 atomic_long_t tlb_dropin_fail_fmm; 202 atomic_long_t tlb_dropin_fail_no_exception; 203 atomic_long_t tfh_stale_on_fault; 204 atomic_long_t mmu_invalidate_range; 205 atomic_long_t mmu_invalidate_page; 206 atomic_long_t flush_tlb; 207 atomic_long_t flush_tlb_gru; 208 atomic_long_t flush_tlb_gru_tgh; 209 atomic_long_t flush_tlb_gru_zero_asid; 210 211 atomic_long_t copy_gpa; 212 atomic_long_t read_gpa; 213 214 atomic_long_t mesq_receive; 215 atomic_long_t mesq_receive_none; 216 atomic_long_t mesq_send; 217 atomic_long_t mesq_send_failed; 218 atomic_long_t mesq_noop; 219 atomic_long_t mesq_send_unexpected_error; 220 atomic_long_t mesq_send_lb_overflow; 221 atomic_long_t mesq_send_qlimit_reached; 222 atomic_long_t mesq_send_amo_nacked; 223 atomic_long_t mesq_send_put_nacked; 224 atomic_long_t mesq_page_overflow; 225 atomic_long_t mesq_qf_locked; 226 atomic_long_t mesq_qf_noop_not_full; 227 atomic_long_t mesq_qf_switch_head_failed; 228 atomic_long_t mesq_qf_unexpected_error; 229 atomic_long_t mesq_noop_unexpected_error; 230 atomic_long_t mesq_noop_lb_overflow; 231 atomic_long_t mesq_noop_qlimit_reached; 232 atomic_long_t mesq_noop_amo_nacked; 233 atomic_long_t mesq_noop_put_nacked; 234 atomic_long_t mesq_noop_page_overflow; 235 236 }; 237 238 enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync, 239 cchop_deallocate, tfhop_write_only, tfhop_write_restart, 240 tghop_invalidate, mcsop_last}; 241 242 struct mcs_op_statistic { 243 atomic_long_t count; 244 atomic_long_t total; 245 unsigned long max; 246 }; 247 248 extern struct mcs_op_statistic mcs_op_statistics[mcsop_last]; 249 250 #define OPT_DPRINT 1 251 #define OPT_STATS 2 252 253 254 #define IRQ_GRU 110 /* Starting IRQ number for interrupts */ 255 256 /* Delay in jiffies between attempts to assign a GRU context */ 257 #define GRU_ASSIGN_DELAY ((HZ * 20) / 1000) 258 259 /* 260 * If a process has it's context stolen, min delay in jiffies before trying to 261 * steal a context from another process. 262 */ 263 #define GRU_STEAL_DELAY ((HZ * 200) / 1000) 264 265 #define STAT(id) do { \ 266 if (gru_options & OPT_STATS) \ 267 atomic_long_inc(&gru_stats.id); \ 268 } while (0) 269 270 #ifdef CONFIG_SGI_GRU_DEBUG 271 #define gru_dbg(dev, fmt, x...) \ 272 do { \ 273 if (gru_options & OPT_DPRINT) \ 274 printk(KERN_DEBUG "GRU:%d %s: " fmt, smp_processor_id(), __func__, x);\ 275 } while (0) 276 #else 277 #define gru_dbg(x...) 278 #endif 279 280 /*----------------------------------------------------------------------------- 281 * ASID management 282 */ 283 #define MAX_ASID 0xfffff0 284 #define MIN_ASID 8 285 #define ASID_INC 8 /* number of regions */ 286 287 /* Generate a GRU asid value from a GRU base asid & a virtual address. */ 288 #define VADDR_HI_BIT 64 289 #define GRUREGION(addr) ((addr) >> (VADDR_HI_BIT - 3) & 3) 290 #define GRUASID(asid, addr) ((asid) + GRUREGION(addr)) 291 292 /*------------------------------------------------------------------------------ 293 * File & VMS Tables 294 */ 295 296 struct gru_state; 297 298 /* 299 * This structure is pointed to from the mmstruct via the notifier pointer. 300 * There is one of these per address space. 301 */ 302 struct gru_mm_tracker { /* pack to reduce size */ 303 unsigned int mt_asid_gen:24; /* ASID wrap count */ 304 unsigned int mt_asid:24; /* current base ASID for gru */ 305 unsigned short mt_ctxbitmap:16;/* bitmap of contexts using 306 asid */ 307 } __attribute__ ((packed)); 308 309 struct gru_mm_struct { 310 struct mmu_notifier ms_notifier; 311 spinlock_t ms_asid_lock; /* protects ASID assignment */ 312 atomic_t ms_range_active;/* num range_invals active */ 313 wait_queue_head_t ms_wait_queue; 314 DECLARE_BITMAP(ms_asidmap, GRU_MAX_GRUS); 315 struct gru_mm_tracker ms_asids[GRU_MAX_GRUS]; 316 }; 317 318 /* 319 * One of these structures is allocated when a GSEG is mmaped. The 320 * structure is pointed to by the vma->vm_private_data field in the vma struct. 321 */ 322 struct gru_vma_data { 323 spinlock_t vd_lock; /* Serialize access to vma */ 324 struct list_head vd_head; /* head of linked list of gts */ 325 long vd_user_options;/* misc user option flags */ 326 int vd_cbr_au_count; 327 int vd_dsr_au_count; 328 unsigned char vd_tlb_preload_count; 329 }; 330 331 /* 332 * One of these is allocated for each thread accessing a mmaped GRU. A linked 333 * list of these structure is hung off the struct gru_vma_data in the mm_struct. 334 */ 335 struct gru_thread_state { 336 struct list_head ts_next; /* list - head at vma-private */ 337 struct mutex ts_ctxlock; /* load/unload CTX lock */ 338 struct mm_struct *ts_mm; /* mm currently mapped to 339 context */ 340 struct vm_area_struct *ts_vma; /* vma of GRU context */ 341 struct gru_state *ts_gru; /* GRU where the context is 342 loaded */ 343 struct gru_mm_struct *ts_gms; /* asid & ioproc struct */ 344 unsigned char ts_tlb_preload_count; /* TLB preload pages */ 345 unsigned long ts_cbr_map; /* map of allocated CBRs */ 346 unsigned long ts_dsr_map; /* map of allocated DATA 347 resources */ 348 unsigned long ts_steal_jiffies;/* jiffies when context last 349 stolen */ 350 long ts_user_options;/* misc user option flags */ 351 pid_t ts_tgid_owner; /* task that is using the 352 context - for migration */ 353 short ts_user_blade_id;/* user selected blade */ 354 signed char ts_user_chiplet_id;/* user selected chiplet */ 355 unsigned short ts_sizeavail; /* Pagesizes in use */ 356 int ts_tsid; /* thread that owns the 357 structure */ 358 int ts_tlb_int_select;/* target cpu if interrupts 359 enabled */ 360 int ts_ctxnum; /* context number where the 361 context is loaded */ 362 refcount_t ts_refcnt; /* reference count GTS */ 363 unsigned char ts_dsr_au_count;/* Number of DSR resources 364 required for contest */ 365 unsigned char ts_cbr_au_count;/* Number of CBR resources 366 required for contest */ 367 signed char ts_cch_req_slice;/* CCH packet slice */ 368 signed char ts_blade; /* If >= 0, migrate context if 369 ref from different blade */ 370 signed char ts_force_cch_reload; 371 signed char ts_cbr_idx[GRU_CBR_AU];/* CBR numbers of each 372 allocated CB */ 373 int ts_data_valid; /* Indicates if ts_gdata has 374 valid data */ 375 struct gru_gseg_statistics ustats; /* User statistics */ 376 unsigned long ts_gdata[]; /* save area for GRU data (CB, 377 DS, CBE) */ 378 }; 379 380 /* 381 * Threaded programs actually allocate an array of GSEGs when a context is 382 * created. Each thread uses a separate GSEG. TSID is the index into the GSEG 383 * array. 384 */ 385 #define TSID(a, v) (((a) - (v)->vm_start) / GRU_GSEG_PAGESIZE) 386 #define UGRUADDR(gts) ((gts)->ts_vma->vm_start + \ 387 (gts)->ts_tsid * GRU_GSEG_PAGESIZE) 388 389 #define NULLCTX (-1) /* if context not loaded into GRU */ 390 391 /*----------------------------------------------------------------------------- 392 * GRU State Tables 393 */ 394 395 /* 396 * One of these exists for each GRU chiplet. 397 */ 398 struct gru_state { 399 struct gru_blade_state *gs_blade; /* GRU state for entire 400 blade */ 401 unsigned long gs_gru_base_paddr; /* Physical address of 402 gru segments (64) */ 403 void *gs_gru_base_vaddr; /* Virtual address of 404 gru segments (64) */ 405 unsigned short gs_gid; /* unique GRU number */ 406 unsigned short gs_blade_id; /* blade of GRU */ 407 unsigned char gs_chiplet_id; /* blade chiplet of GRU */ 408 unsigned char gs_tgh_local_shift; /* used to pick TGH for 409 local flush */ 410 unsigned char gs_tgh_first_remote; /* starting TGH# for 411 remote flush */ 412 spinlock_t gs_asid_lock; /* lock used for 413 assigning asids */ 414 spinlock_t gs_lock; /* lock used for 415 assigning contexts */ 416 417 /* -- the following are protected by the gs_asid_lock spinlock ---- */ 418 unsigned int gs_asid; /* Next availe ASID */ 419 unsigned int gs_asid_limit; /* Limit of available 420 ASIDs */ 421 unsigned int gs_asid_gen; /* asid generation. 422 Inc on wrap */ 423 424 /* --- the following fields are protected by the gs_lock spinlock --- */ 425 unsigned long gs_context_map; /* bitmap to manage 426 contexts in use */ 427 unsigned long gs_cbr_map; /* bitmap to manage CB 428 resources */ 429 unsigned long gs_dsr_map; /* bitmap used to manage 430 DATA resources */ 431 unsigned int gs_reserved_cbrs; /* Number of kernel- 432 reserved cbrs */ 433 unsigned int gs_reserved_dsr_bytes; /* Bytes of kernel- 434 reserved dsrs */ 435 unsigned short gs_active_contexts; /* number of contexts 436 in use */ 437 struct gru_thread_state *gs_gts[GRU_NUM_CCH]; /* GTS currently using 438 the context */ 439 int gs_irq[GRU_NUM_TFM]; /* Interrupt irqs */ 440 }; 441 442 /* 443 * This structure contains the GRU state for all the GRUs on a blade. 444 */ 445 struct gru_blade_state { 446 void *kernel_cb; /* First kernel 447 reserved cb */ 448 void *kernel_dsr; /* First kernel 449 reserved DSR */ 450 struct rw_semaphore bs_kgts_sema; /* lock for kgts */ 451 struct gru_thread_state *bs_kgts; /* GTS for kernel use */ 452 453 /* ---- the following are used for managing kernel async GRU CBRs --- */ 454 int bs_async_dsr_bytes; /* DSRs for async */ 455 int bs_async_cbrs; /* CBRs AU for async */ 456 struct completion *bs_async_wq; 457 458 /* ---- the following are protected by the bs_lock spinlock ---- */ 459 spinlock_t bs_lock; /* lock used for 460 stealing contexts */ 461 int bs_lru_ctxnum; /* STEAL - last context 462 stolen */ 463 struct gru_state *bs_lru_gru; /* STEAL - last gru 464 stolen */ 465 466 struct gru_state bs_grus[GRU_CHIPLETS_PER_BLADE]; 467 }; 468 469 /*----------------------------------------------------------------------------- 470 * Address Primitives 471 */ 472 #define get_tfm_for_cpu(g, c) \ 473 ((struct gru_tlb_fault_map *)get_tfm((g)->gs_gru_base_vaddr, (c))) 474 #define get_tfh_by_index(g, i) \ 475 ((struct gru_tlb_fault_handle *)get_tfh((g)->gs_gru_base_vaddr, (i))) 476 #define get_tgh_by_index(g, i) \ 477 ((struct gru_tlb_global_handle *)get_tgh((g)->gs_gru_base_vaddr, (i))) 478 #define get_cbe_by_index(g, i) \ 479 ((struct gru_control_block_extended *)get_cbe((g)->gs_gru_base_vaddr,\ 480 (i))) 481 482 /*----------------------------------------------------------------------------- 483 * Useful Macros 484 */ 485 486 /* Given a blade# & chiplet#, get a pointer to the GRU */ 487 #define get_gru(b, c) (&gru_base[b]->bs_grus[c]) 488 489 /* Number of bytes to save/restore when unloading/loading GRU contexts */ 490 #define DSR_BYTES(dsr) ((dsr) * GRU_DSR_AU_BYTES) 491 #define CBR_BYTES(cbr) ((cbr) * GRU_HANDLE_BYTES * GRU_CBR_AU_SIZE * 2) 492 493 /* Convert a user CB number to the actual CBRNUM */ 494 #define thread_cbr_number(gts, n) ((gts)->ts_cbr_idx[(n) / GRU_CBR_AU_SIZE] \ 495 * GRU_CBR_AU_SIZE + (n) % GRU_CBR_AU_SIZE) 496 497 /* Convert a gid to a pointer to the GRU */ 498 #define GID_TO_GRU(gid) \ 499 (gru_base[(gid) / GRU_CHIPLETS_PER_BLADE] ? \ 500 (&gru_base[(gid) / GRU_CHIPLETS_PER_BLADE]-> \ 501 bs_grus[(gid) % GRU_CHIPLETS_PER_BLADE]) : \ 502 NULL) 503 504 /* Scan all active GRUs in a GRU bitmap */ 505 #define for_each_gru_in_bitmap(gid, map) \ 506 for_each_set_bit((gid), (map), GRU_MAX_GRUS) 507 508 /* Scan all active GRUs on a specific blade */ 509 #define for_each_gru_on_blade(gru, nid, i) \ 510 for ((gru) = gru_base[nid]->bs_grus, (i) = 0; \ 511 (i) < GRU_CHIPLETS_PER_BLADE; \ 512 (i)++, (gru)++) 513 514 /* Scan all GRUs */ 515 #define foreach_gid(gid) \ 516 for ((gid) = 0; (gid) < gru_max_gids; (gid)++) 517 518 /* Scan all active GTSs on a gru. Note: must hold ss_lock to use this macro. */ 519 #define for_each_gts_on_gru(gts, gru, ctxnum) \ 520 for ((ctxnum) = 0; (ctxnum) < GRU_NUM_CCH; (ctxnum)++) \ 521 if (((gts) = (gru)->gs_gts[ctxnum])) 522 523 /* Scan each CBR whose bit is set in a TFM (or copy of) */ 524 #define for_each_cbr_in_tfm(i, map) \ 525 for_each_set_bit((i), (map), GRU_NUM_CBE) 526 527 /* Scan each CBR in a CBR bitmap. Note: multiple CBRs in an allocation unit */ 528 #define for_each_cbr_in_allocation_map(i, map, k) \ 529 for_each_set_bit((k), (map), GRU_CBR_AU) \ 530 for ((i) = (k)*GRU_CBR_AU_SIZE; \ 531 (i) < ((k) + 1) * GRU_CBR_AU_SIZE; (i)++) 532 533 #define gseg_physical_address(gru, ctxnum) \ 534 ((gru)->gs_gru_base_paddr + ctxnum * GRU_GSEG_STRIDE) 535 #define gseg_virtual_address(gru, ctxnum) \ 536 ((gru)->gs_gru_base_vaddr + ctxnum * GRU_GSEG_STRIDE) 537 538 /*----------------------------------------------------------------------------- 539 * Lock / Unlock GRU handles 540 * Use the "delresp" bit in the handle as a "lock" bit. 541 */ 542 543 /* Lock hierarchy checking enabled only in emulator */ 544 545 /* 0 = lock failed, 1 = locked */ 546 static inline int __trylock_handle(void *h) 547 { 548 return !test_and_set_bit(1, h); 549 } 550 551 static inline void __lock_handle(void *h) 552 { 553 while (test_and_set_bit(1, h)) 554 cpu_relax(); 555 } 556 557 static inline void __unlock_handle(void *h) 558 { 559 clear_bit(1, h); 560 } 561 562 static inline int trylock_cch_handle(struct gru_context_configuration_handle *cch) 563 { 564 return __trylock_handle(cch); 565 } 566 567 static inline void lock_cch_handle(struct gru_context_configuration_handle *cch) 568 { 569 __lock_handle(cch); 570 } 571 572 static inline void unlock_cch_handle(struct gru_context_configuration_handle 573 *cch) 574 { 575 __unlock_handle(cch); 576 } 577 578 static inline void lock_tgh_handle(struct gru_tlb_global_handle *tgh) 579 { 580 __lock_handle(tgh); 581 } 582 583 static inline void unlock_tgh_handle(struct gru_tlb_global_handle *tgh) 584 { 585 __unlock_handle(tgh); 586 } 587 588 static inline int is_kernel_context(struct gru_thread_state *gts) 589 { 590 return !gts->ts_mm; 591 } 592 593 /* 594 * The following are for Nehelem-EX. A more general scheme is needed for 595 * future processors. 596 */ 597 #define UV_MAX_INT_CORES 8 598 #define uv_cpu_socket_number(p) ((cpu_physical_id(p) >> 5) & 1) 599 #define uv_cpu_ht_number(p) (cpu_physical_id(p) & 1) 600 #define uv_cpu_core_number(p) (((cpu_physical_id(p) >> 2) & 4) | \ 601 ((cpu_physical_id(p) >> 1) & 3)) 602 /*----------------------------------------------------------------------------- 603 * Function prototypes & externs 604 */ 605 struct gru_unload_context_req; 606 607 extern const struct vm_operations_struct gru_vm_ops; 608 extern struct device *grudev; 609 610 extern struct gru_vma_data *gru_alloc_vma_data(struct vm_area_struct *vma, 611 int tsid); 612 extern struct gru_thread_state *gru_find_thread_state(struct vm_area_struct 613 *vma, int tsid); 614 extern struct gru_thread_state *gru_alloc_thread_state(struct vm_area_struct 615 *vma, int tsid); 616 extern struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts); 617 extern void gru_load_context(struct gru_thread_state *gts); 618 extern void gru_steal_context(struct gru_thread_state *gts); 619 extern void gru_unload_context(struct gru_thread_state *gts, int savestate); 620 extern int gru_update_cch(struct gru_thread_state *gts); 621 extern void gts_drop(struct gru_thread_state *gts); 622 extern void gru_tgh_flush_init(struct gru_state *gru); 623 extern int gru_kservices_init(void); 624 extern void gru_kservices_exit(void); 625 extern irqreturn_t gru0_intr(int irq, void *dev_id); 626 extern irqreturn_t gru1_intr(int irq, void *dev_id); 627 extern irqreturn_t gru_intr_mblade(int irq, void *dev_id); 628 extern int gru_dump_chiplet_request(unsigned long arg); 629 extern long gru_get_gseg_statistics(unsigned long arg); 630 extern int gru_handle_user_call_os(unsigned long address); 631 extern int gru_user_flush_tlb(unsigned long arg); 632 extern int gru_user_unload_context(unsigned long arg); 633 extern int gru_get_exception_detail(unsigned long arg); 634 extern int gru_set_context_option(unsigned long address); 635 extern void gru_check_context_placement(struct gru_thread_state *gts); 636 extern int gru_cpu_fault_map_id(void); 637 extern struct vm_area_struct *gru_find_vma(unsigned long vaddr); 638 extern void gru_flush_all_tlb(struct gru_state *gru); 639 extern int gru_proc_init(void); 640 extern void gru_proc_exit(void); 641 642 extern struct gru_thread_state *gru_alloc_gts(struct vm_area_struct *vma, 643 int cbr_au_count, int dsr_au_count, 644 unsigned char tlb_preload_count, int options, int tsid); 645 extern unsigned long gru_reserve_cb_resources(struct gru_state *gru, 646 int cbr_au_count, signed char *cbmap); 647 extern unsigned long gru_reserve_ds_resources(struct gru_state *gru, 648 int dsr_au_count, signed char *dsmap); 649 extern vm_fault_t gru_fault(struct vm_fault *vmf); 650 extern struct gru_mm_struct *gru_register_mmu_notifier(void); 651 extern void gru_drop_mmu_notifier(struct gru_mm_struct *gms); 652 653 extern int gru_ktest(unsigned long arg); 654 extern void gru_flush_tlb_range(struct gru_mm_struct *gms, unsigned long start, 655 unsigned long len); 656 657 extern unsigned long gru_options; 658 659 #endif /* __GRUTABLES_H__ */ 660