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 */
__trylock_handle(void * h)546 static inline int __trylock_handle(void *h)
547 {
548 return !test_and_set_bit(1, h);
549 }
550
__lock_handle(void * h)551 static inline void __lock_handle(void *h)
552 {
553 while (test_and_set_bit(1, h))
554 cpu_relax();
555 }
556
__unlock_handle(void * h)557 static inline void __unlock_handle(void *h)
558 {
559 clear_bit(1, h);
560 }
561
trylock_cch_handle(struct gru_context_configuration_handle * cch)562 static inline int trylock_cch_handle(struct gru_context_configuration_handle *cch)
563 {
564 return __trylock_handle(cch);
565 }
566
lock_cch_handle(struct gru_context_configuration_handle * cch)567 static inline void lock_cch_handle(struct gru_context_configuration_handle *cch)
568 {
569 __lock_handle(cch);
570 }
571
unlock_cch_handle(struct gru_context_configuration_handle * cch)572 static inline void unlock_cch_handle(struct gru_context_configuration_handle
573 *cch)
574 {
575 __unlock_handle(cch);
576 }
577
lock_tgh_handle(struct gru_tlb_global_handle * tgh)578 static inline void lock_tgh_handle(struct gru_tlb_global_handle *tgh)
579 {
580 __lock_handle(tgh);
581 }
582
unlock_tgh_handle(struct gru_tlb_global_handle * tgh)583 static inline void unlock_tgh_handle(struct gru_tlb_global_handle *tgh)
584 {
585 __unlock_handle(tgh);
586 }
587
is_kernel_context(struct gru_thread_state * gts)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 int 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