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13d19498 JS |
1 | /* |
2 | * SN Platform GRU Driver | |
3 | * | |
4 | * GRU DRIVER TABLES, MACROS, externs, etc | |
5 | * | |
6 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #ifndef __GRUTABLES_H__ | |
24 | #define __GRUTABLES_H__ | |
25 | ||
26 | /* | |
27 | * Tables: | |
28 | * | |
29 | * VDATA-VMA Data - Holds a few parameters. Head of linked list of | |
30 | * GTS tables for threads using the GSEG | |
31 | * GTS - Gru Thread State - contains info for managing a GSEG context. A | |
32 | * GTS is allocated for each thread accessing a | |
33 | * GSEG. | |
34 | * GTD - GRU Thread Data - contains shadow copy of GRU data when GSEG is | |
35 | * not loaded into a GRU | |
36 | * GMS - GRU Memory Struct - Used to manage TLB shootdowns. Tracks GRUs | |
37 | * where a GSEG has been loaded. Similar to | |
38 | * an mm_struct but for GRU. | |
39 | * | |
40 | * GS - GRU State - Used to manage the state of a GRU chiplet | |
41 | * BS - Blade State - Used to manage state of all GRU chiplets | |
42 | * on a blade | |
43 | * | |
44 | * | |
45 | * Normal task tables for task using GRU. | |
46 | * - 2 threads in process | |
47 | * - 2 GSEGs open in process | |
48 | * - GSEG1 is being used by both threads | |
49 | * - GSEG2 is used only by thread 2 | |
50 | * | |
51 | * task -->| | |
52 | * task ---+---> mm ->------ (notifier) -------+-> gms | |
53 | * | | | |
54 | * |--> vma -> vdata ---> gts--->| GSEG1 (thread1) | |
55 | * | | | | |
56 | * | +-> gts--->| GSEG1 (thread2) | |
57 | * | | | |
58 | * |--> vma -> vdata ---> gts--->| GSEG2 (thread2) | |
59 | * . | |
60 | * . | |
61 | * | |
62 | * GSEGs are marked DONTCOPY on fork | |
63 | * | |
64 | * At open | |
65 | * file.private_data -> NULL | |
66 | * | |
67 | * At mmap, | |
68 | * vma -> vdata | |
69 | * | |
70 | * After gseg reference | |
71 | * vma -> vdata ->gts | |
72 | * | |
73 | * After fork | |
74 | * parent | |
75 | * vma -> vdata -> gts | |
76 | * child | |
77 | * (vma is not copied) | |
78 | * | |
79 | */ | |
80 | ||
81 | #include <linux/rmap.h> | |
82 | #include <linux/interrupt.h> | |
83 | #include <linux/mutex.h> | |
84 | #include <linux/wait.h> | |
85 | #include <linux/mmu_notifier.h> | |
86 | #include "gru.h" | |
87 | #include "gruhandles.h" | |
88 | ||
89 | extern struct gru_stats_s gru_stats; | |
90 | extern struct gru_blade_state *gru_base[]; | |
91 | extern unsigned long gru_start_paddr, gru_end_paddr; | |
92 | ||
93 | #define GRU_MAX_BLADES MAX_NUMNODES | |
94 | #define GRU_MAX_GRUS (GRU_MAX_BLADES * GRU_CHIPLETS_PER_BLADE) | |
95 | ||
96 | #define GRU_DRIVER_ID_STR "SGI GRU Device Driver" | |
97 | #define GRU_DRIVER_VERSION_STR "0.80" | |
98 | ||
99 | /* | |
100 | * GRU statistics. | |
101 | */ | |
102 | struct gru_stats_s { | |
103 | atomic_long_t vdata_alloc; | |
104 | atomic_long_t vdata_free; | |
105 | atomic_long_t gts_alloc; | |
106 | atomic_long_t gts_free; | |
107 | atomic_long_t vdata_double_alloc; | |
108 | atomic_long_t gts_double_allocate; | |
109 | atomic_long_t assign_context; | |
110 | atomic_long_t assign_context_failed; | |
111 | atomic_long_t free_context; | |
112 | atomic_long_t load_context; | |
113 | atomic_long_t unload_context; | |
114 | atomic_long_t steal_context; | |
115 | atomic_long_t steal_context_failed; | |
116 | atomic_long_t nopfn; | |
117 | atomic_long_t break_cow; | |
118 | atomic_long_t asid_new; | |
119 | atomic_long_t asid_next; | |
120 | atomic_long_t asid_wrap; | |
121 | atomic_long_t asid_reuse; | |
122 | atomic_long_t intr; | |
123 | atomic_long_t call_os; | |
124 | atomic_long_t call_os_check_for_bug; | |
125 | atomic_long_t call_os_wait_queue; | |
126 | atomic_long_t user_flush_tlb; | |
127 | atomic_long_t user_unload_context; | |
128 | atomic_long_t user_exception; | |
129 | atomic_long_t set_task_slice; | |
130 | atomic_long_t migrate_check; | |
131 | atomic_long_t migrated_retarget; | |
132 | atomic_long_t migrated_unload; | |
133 | atomic_long_t migrated_unload_delay; | |
134 | atomic_long_t migrated_nopfn_retarget; | |
135 | atomic_long_t migrated_nopfn_unload; | |
136 | atomic_long_t tlb_dropin; | |
137 | atomic_long_t tlb_dropin_fail_no_asid; | |
138 | atomic_long_t tlb_dropin_fail_upm; | |
139 | atomic_long_t tlb_dropin_fail_invalid; | |
140 | atomic_long_t tlb_dropin_fail_range_active; | |
141 | atomic_long_t tlb_dropin_fail_idle; | |
142 | atomic_long_t tlb_dropin_fail_fmm; | |
143 | atomic_long_t mmu_invalidate_range; | |
144 | atomic_long_t mmu_invalidate_page; | |
145 | atomic_long_t mmu_clear_flush_young; | |
146 | atomic_long_t flush_tlb; | |
147 | atomic_long_t flush_tlb_gru; | |
148 | atomic_long_t flush_tlb_gru_tgh; | |
149 | atomic_long_t flush_tlb_gru_zero_asid; | |
150 | ||
151 | atomic_long_t copy_gpa; | |
152 | ||
153 | atomic_long_t mesq_receive; | |
154 | atomic_long_t mesq_receive_none; | |
155 | atomic_long_t mesq_send; | |
156 | atomic_long_t mesq_send_failed; | |
157 | atomic_long_t mesq_noop; | |
158 | atomic_long_t mesq_send_unexpected_error; | |
159 | atomic_long_t mesq_send_lb_overflow; | |
160 | atomic_long_t mesq_send_qlimit_reached; | |
161 | atomic_long_t mesq_send_amo_nacked; | |
162 | atomic_long_t mesq_send_put_nacked; | |
163 | atomic_long_t mesq_qf_not_full; | |
164 | atomic_long_t mesq_qf_locked; | |
165 | atomic_long_t mesq_qf_noop_not_full; | |
166 | atomic_long_t mesq_qf_switch_head_failed; | |
167 | atomic_long_t mesq_qf_unexpected_error; | |
168 | atomic_long_t mesq_noop_unexpected_error; | |
169 | atomic_long_t mesq_noop_lb_overflow; | |
170 | atomic_long_t mesq_noop_qlimit_reached; | |
171 | atomic_long_t mesq_noop_amo_nacked; | |
172 | atomic_long_t mesq_noop_put_nacked; | |
173 | ||
174 | }; | |
175 | ||
176 | #define OPT_DPRINT 1 | |
177 | #define OPT_STATS 2 | |
178 | #define GRU_QUICKLOOK 4 | |
179 | ||
180 | ||
181 | #define IRQ_GRU 110 /* Starting IRQ number for interrupts */ | |
182 | ||
183 | /* Delay in jiffies between attempts to assign a GRU context */ | |
184 | #define GRU_ASSIGN_DELAY ((HZ * 20) / 1000) | |
185 | ||
186 | /* | |
187 | * If a process has it's context stolen, min delay in jiffies before trying to | |
188 | * steal a context from another process. | |
189 | */ | |
190 | #define GRU_STEAL_DELAY ((HZ * 200) / 1000) | |
191 | ||
192 | #define STAT(id) do { \ | |
193 | if (options & OPT_STATS) \ | |
194 | atomic_long_inc(&gru_stats.id); \ | |
195 | } while (0) | |
196 | ||
197 | #ifdef CONFIG_SGI_GRU_DEBUG | |
198 | #define gru_dbg(dev, fmt, x...) \ | |
199 | do { \ | |
200 | if (options & OPT_DPRINT) \ | |
201 | dev_dbg(dev, "%s: " fmt, __func__, x); \ | |
202 | } while (0) | |
203 | #else | |
204 | #define gru_dbg(x...) | |
205 | #endif | |
206 | ||
207 | /*----------------------------------------------------------------------------- | |
208 | * ASID management | |
209 | */ | |
210 | #define MAX_ASID 0xfffff0 | |
211 | #define MIN_ASID 8 | |
212 | #define ASID_INC 8 /* number of regions */ | |
213 | ||
214 | /* Generate a GRU asid value from a GRU base asid & a virtual address. */ | |
215 | #if defined CONFIG_IA64 | |
216 | #define VADDR_HI_BIT 64 | |
217 | #define GRUREGION(addr) ((addr) >> (VADDR_HI_BIT - 3) & 3) | |
218 | #elif defined __x86_64 | |
219 | #define VADDR_HI_BIT 48 | |
220 | #define GRUREGION(addr) (0) /* ZZZ could do better */ | |
221 | #else | |
222 | #error "Unsupported architecture" | |
223 | #endif | |
224 | #define GRUASID(asid, addr) ((asid) + GRUREGION(addr)) | |
225 | ||
226 | /*------------------------------------------------------------------------------ | |
227 | * File & VMS Tables | |
228 | */ | |
229 | ||
230 | struct gru_state; | |
231 | ||
232 | /* | |
233 | * This structure is pointed to from the mmstruct via the notifier pointer. | |
234 | * There is one of these per address space. | |
235 | */ | |
236 | struct gru_mm_tracker { | |
237 | unsigned int mt_asid_gen; /* ASID wrap count */ | |
238 | int mt_asid; /* current base ASID for gru */ | |
239 | unsigned short mt_ctxbitmap; /* bitmap of contexts using | |
240 | asid */ | |
241 | }; | |
242 | ||
243 | struct gru_mm_struct { | |
244 | struct mmu_notifier ms_notifier; | |
245 | atomic_t ms_refcnt; | |
246 | spinlock_t ms_asid_lock; /* protects ASID assignment */ | |
247 | atomic_t ms_range_active;/* num range_invals active */ | |
248 | char ms_released; | |
249 | wait_queue_head_t ms_wait_queue; | |
250 | DECLARE_BITMAP(ms_asidmap, GRU_MAX_GRUS); | |
251 | struct gru_mm_tracker ms_asids[GRU_MAX_GRUS]; | |
252 | }; | |
253 | ||
254 | /* | |
255 | * One of these structures is allocated when a GSEG is mmaped. The | |
256 | * structure is pointed to by the vma->vm_private_data field in the vma struct. | |
257 | */ | |
258 | struct gru_vma_data { | |
259 | spinlock_t vd_lock; /* Serialize access to vma */ | |
260 | struct list_head vd_head; /* head of linked list of gts */ | |
261 | long vd_user_options;/* misc user option flags */ | |
262 | int vd_cbr_au_count; | |
263 | int vd_dsr_au_count; | |
264 | }; | |
265 | ||
266 | /* | |
267 | * One of these is allocated for each thread accessing a mmaped GRU. A linked | |
268 | * list of these structure is hung off the struct gru_vma_data in the mm_struct. | |
269 | */ | |
270 | struct gru_thread_state { | |
271 | struct list_head ts_next; /* list - head at vma-private */ | |
272 | struct mutex ts_ctxlock; /* load/unload CTX lock */ | |
273 | struct mm_struct *ts_mm; /* mm currently mapped to | |
274 | context */ | |
275 | struct vm_area_struct *ts_vma; /* vma of GRU context */ | |
276 | struct gru_state *ts_gru; /* GRU where the context is | |
277 | loaded */ | |
278 | struct gru_mm_struct *ts_gms; /* asid & ioproc struct */ | |
279 | unsigned long ts_cbr_map; /* map of allocated CBRs */ | |
280 | unsigned long ts_dsr_map; /* map of allocated DATA | |
281 | resources */ | |
282 | unsigned long ts_steal_jiffies;/* jiffies when context last | |
283 | stolen */ | |
284 | long ts_user_options;/* misc user option flags */ | |
285 | pid_t ts_tgid_owner; /* task that is using the | |
286 | context - for migration */ | |
287 | int ts_tsid; /* thread that owns the | |
288 | structure */ | |
289 | int ts_tlb_int_select;/* target cpu if interrupts | |
290 | enabled */ | |
291 | int ts_ctxnum; /* context number where the | |
292 | context is loaded */ | |
293 | atomic_t ts_refcnt; /* reference count GTS */ | |
294 | unsigned char ts_dsr_au_count;/* Number of DSR resources | |
295 | required for contest */ | |
296 | unsigned char ts_cbr_au_count;/* Number of CBR resources | |
297 | required for contest */ | |
298 | char ts_force_unload;/* force context to be unloaded | |
299 | after migration */ | |
300 | char ts_cbr_idx[GRU_CBR_AU];/* CBR numbers of each | |
301 | allocated CB */ | |
302 | unsigned long ts_gdata[0]; /* save area for GRU data (CB, | |
303 | DS, CBE) */ | |
304 | }; | |
305 | ||
306 | /* | |
307 | * Threaded programs actually allocate an array of GSEGs when a context is | |
308 | * created. Each thread uses a separate GSEG. TSID is the index into the GSEG | |
309 | * array. | |
310 | */ | |
311 | #define TSID(a, v) (((a) - (v)->vm_start) / GRU_GSEG_PAGESIZE) | |
312 | #define UGRUADDR(gts) ((gts)->ts_vma->vm_start + \ | |
313 | (gts)->ts_tsid * GRU_GSEG_PAGESIZE) | |
314 | ||
315 | #define NULLCTX (-1) /* if context not loaded into GRU */ | |
316 | ||
317 | /*----------------------------------------------------------------------------- | |
318 | * GRU State Tables | |
319 | */ | |
320 | ||
321 | /* | |
322 | * One of these exists for each GRU chiplet. | |
323 | */ | |
324 | struct gru_state { | |
325 | struct gru_blade_state *gs_blade; /* GRU state for entire | |
326 | blade */ | |
327 | unsigned long gs_gru_base_paddr; /* Physical address of | |
328 | gru segments (64) */ | |
329 | void *gs_gru_base_vaddr; /* Virtual address of | |
330 | gru segments (64) */ | |
331 | unsigned char gs_gid; /* unique GRU number */ | |
332 | unsigned char gs_tgh_local_shift; /* used to pick TGH for | |
333 | local flush */ | |
334 | unsigned char gs_tgh_first_remote; /* starting TGH# for | |
335 | remote flush */ | |
336 | unsigned short gs_blade_id; /* blade of GRU */ | |
337 | spinlock_t gs_asid_lock; /* lock used for | |
338 | assigning asids */ | |
339 | spinlock_t gs_lock; /* lock used for | |
340 | assigning contexts */ | |
341 | ||
342 | /* -- the following are protected by the gs_asid_lock spinlock ---- */ | |
343 | unsigned int gs_asid; /* Next availe ASID */ | |
344 | unsigned int gs_asid_limit; /* Limit of available | |
345 | ASIDs */ | |
346 | unsigned int gs_asid_gen; /* asid generation. | |
347 | Inc on wrap */ | |
348 | ||
349 | /* --- the following fields are protected by the gs_lock spinlock --- */ | |
350 | unsigned long gs_context_map; /* bitmap to manage | |
351 | contexts in use */ | |
352 | unsigned long gs_cbr_map; /* bitmap to manage CB | |
353 | resources */ | |
354 | unsigned long gs_dsr_map; /* bitmap used to manage | |
355 | DATA resources */ | |
356 | unsigned int gs_reserved_cbrs; /* Number of kernel- | |
357 | reserved cbrs */ | |
358 | unsigned int gs_reserved_dsr_bytes; /* Bytes of kernel- | |
359 | reserved dsrs */ | |
360 | unsigned short gs_active_contexts; /* number of contexts | |
361 | in use */ | |
362 | struct gru_thread_state *gs_gts[GRU_NUM_CCH]; /* GTS currently using | |
363 | the context */ | |
364 | }; | |
365 | ||
366 | /* | |
367 | * This structure contains the GRU state for all the GRUs on a blade. | |
368 | */ | |
369 | struct gru_blade_state { | |
370 | void *kernel_cb; /* First kernel | |
371 | reserved cb */ | |
372 | void *kernel_dsr; /* First kernel | |
373 | reserved DSR */ | |
374 | /* ---- the following are protected by the bs_lock spinlock ---- */ | |
375 | spinlock_t bs_lock; /* lock used for | |
376 | stealing contexts */ | |
377 | int bs_lru_ctxnum; /* STEAL - last context | |
378 | stolen */ | |
379 | struct gru_state *bs_lru_gru; /* STEAL - last gru | |
380 | stolen */ | |
381 | ||
382 | struct gru_state bs_grus[GRU_CHIPLETS_PER_BLADE]; | |
383 | }; | |
384 | ||
385 | /*----------------------------------------------------------------------------- | |
386 | * Address Primitives | |
387 | */ | |
388 | #define get_tfm_for_cpu(g, c) \ | |
389 | ((struct gru_tlb_fault_map *)get_tfm((g)->gs_gru_base_vaddr, (c))) | |
390 | #define get_tfh_by_index(g, i) \ | |
391 | ((struct gru_tlb_fault_handle *)get_tfh((g)->gs_gru_base_vaddr, (i))) | |
392 | #define get_tgh_by_index(g, i) \ | |
393 | ((struct gru_tlb_global_handle *)get_tgh((g)->gs_gru_base_vaddr, (i))) | |
394 | #define get_cbe_by_index(g, i) \ | |
395 | ((struct gru_control_block_extended *)get_cbe((g)->gs_gru_base_vaddr,\ | |
396 | (i))) | |
397 | ||
398 | /*----------------------------------------------------------------------------- | |
399 | * Useful Macros | |
400 | */ | |
401 | ||
402 | /* Given a blade# & chiplet#, get a pointer to the GRU */ | |
403 | #define get_gru(b, c) (&gru_base[b]->bs_grus[c]) | |
404 | ||
405 | /* Number of bytes to save/restore when unloading/loading GRU contexts */ | |
406 | #define DSR_BYTES(dsr) ((dsr) * GRU_DSR_AU_BYTES) | |
407 | #define CBR_BYTES(cbr) ((cbr) * GRU_HANDLE_BYTES * GRU_CBR_AU_SIZE * 2) | |
408 | ||
409 | /* Convert a user CB number to the actual CBRNUM */ | |
410 | #define thread_cbr_number(gts, n) ((gts)->ts_cbr_idx[(n) / GRU_CBR_AU_SIZE] \ | |
411 | * GRU_CBR_AU_SIZE + (n) % GRU_CBR_AU_SIZE) | |
412 | ||
413 | /* Convert a gid to a pointer to the GRU */ | |
414 | #define GID_TO_GRU(gid) \ | |
415 | (gru_base[(gid) / GRU_CHIPLETS_PER_BLADE] ? \ | |
416 | (&gru_base[(gid) / GRU_CHIPLETS_PER_BLADE]-> \ | |
417 | bs_grus[(gid) % GRU_CHIPLETS_PER_BLADE]) : \ | |
418 | NULL) | |
419 | ||
420 | /* Scan all active GRUs in a GRU bitmap */ | |
421 | #define for_each_gru_in_bitmap(gid, map) \ | |
422 | for ((gid) = find_first_bit((map), GRU_MAX_GRUS); (gid) < GRU_MAX_GRUS;\ | |
423 | (gid)++, (gid) = find_next_bit((map), GRU_MAX_GRUS, (gid))) | |
424 | ||
425 | /* Scan all active GRUs on a specific blade */ | |
426 | #define for_each_gru_on_blade(gru, nid, i) \ | |
427 | for ((gru) = gru_base[nid]->bs_grus, (i) = 0; \ | |
428 | (i) < GRU_CHIPLETS_PER_BLADE; \ | |
429 | (i)++, (gru)++) | |
430 | ||
431 | /* Scan all active GTSs on a gru. Note: must hold ss_lock to use this macro. */ | |
432 | #define for_each_gts_on_gru(gts, gru, ctxnum) \ | |
433 | for ((ctxnum) = 0; (ctxnum) < GRU_NUM_CCH; (ctxnum)++) \ | |
434 | if (((gts) = (gru)->gs_gts[ctxnum])) | |
435 | ||
436 | /* Scan each CBR whose bit is set in a TFM (or copy of) */ | |
437 | #define for_each_cbr_in_tfm(i, map) \ | |
438 | for ((i) = find_first_bit(map, GRU_NUM_CBE); \ | |
439 | (i) < GRU_NUM_CBE; \ | |
440 | (i)++, (i) = find_next_bit(map, GRU_NUM_CBE, i)) | |
441 | ||
442 | /* Scan each CBR in a CBR bitmap. Note: multiple CBRs in an allocation unit */ | |
443 | #define for_each_cbr_in_allocation_map(i, map, k) \ | |
444 | for ((k) = find_first_bit(map, GRU_CBR_AU); (k) < GRU_CBR_AU; \ | |
445 | (k) = find_next_bit(map, GRU_CBR_AU, (k) + 1)) \ | |
446 | for ((i) = (k)*GRU_CBR_AU_SIZE; \ | |
447 | (i) < ((k) + 1) * GRU_CBR_AU_SIZE; (i)++) | |
448 | ||
449 | /* Scan each DSR in a DSR bitmap. Note: multiple DSRs in an allocation unit */ | |
450 | #define for_each_dsr_in_allocation_map(i, map, k) \ | |
451 | for ((k) = find_first_bit((const unsigned long *)map, GRU_DSR_AU);\ | |
452 | (k) < GRU_DSR_AU; \ | |
453 | (k) = find_next_bit((const unsigned long *)map, \ | |
454 | GRU_DSR_AU, (k) + 1)) \ | |
455 | for ((i) = (k) * GRU_DSR_AU_CL; \ | |
456 | (i) < ((k) + 1) * GRU_DSR_AU_CL; (i)++) | |
457 | ||
458 | #define gseg_physical_address(gru, ctxnum) \ | |
459 | ((gru)->gs_gru_base_paddr + ctxnum * GRU_GSEG_STRIDE) | |
460 | #define gseg_virtual_address(gru, ctxnum) \ | |
461 | ((gru)->gs_gru_base_vaddr + ctxnum * GRU_GSEG_STRIDE) | |
462 | ||
463 | /*----------------------------------------------------------------------------- | |
464 | * Lock / Unlock GRU handles | |
465 | * Use the "delresp" bit in the handle as a "lock" bit. | |
466 | */ | |
467 | ||
468 | /* Lock hierarchy checking enabled only in emulator */ | |
469 | ||
470 | static inline void __lock_handle(void *h) | |
471 | { | |
472 | while (test_and_set_bit(1, h)) | |
473 | cpu_relax(); | |
474 | } | |
475 | ||
476 | static inline void __unlock_handle(void *h) | |
477 | { | |
478 | clear_bit(1, h); | |
479 | } | |
480 | ||
481 | static inline void lock_cch_handle(struct gru_context_configuration_handle *cch) | |
482 | { | |
483 | __lock_handle(cch); | |
484 | } | |
485 | ||
486 | static inline void unlock_cch_handle(struct gru_context_configuration_handle | |
487 | *cch) | |
488 | { | |
489 | __unlock_handle(cch); | |
490 | } | |
491 | ||
492 | static inline void lock_tgh_handle(struct gru_tlb_global_handle *tgh) | |
493 | { | |
494 | __lock_handle(tgh); | |
495 | } | |
496 | ||
497 | static inline void unlock_tgh_handle(struct gru_tlb_global_handle *tgh) | |
498 | { | |
499 | __unlock_handle(tgh); | |
500 | } | |
501 | ||
502 | /*----------------------------------------------------------------------------- | |
503 | * Function prototypes & externs | |
504 | */ | |
505 | struct gru_unload_context_req; | |
506 | ||
507 | extern struct vm_operations_struct gru_vm_ops; | |
508 | extern struct device *grudev; | |
509 | ||
510 | extern struct gru_vma_data *gru_alloc_vma_data(struct vm_area_struct *vma, | |
511 | int tsid); | |
512 | extern struct gru_thread_state *gru_find_thread_state(struct vm_area_struct | |
513 | *vma, int tsid); | |
514 | extern struct gru_thread_state *gru_alloc_thread_state(struct vm_area_struct | |
515 | *vma, int tsid); | |
516 | extern void gru_unload_context(struct gru_thread_state *gts, int savestate); | |
517 | extern void gts_drop(struct gru_thread_state *gts); | |
518 | extern void gru_tgh_flush_init(struct gru_state *gru); | |
519 | extern int gru_kservices_init(struct gru_state *gru); | |
520 | extern irqreturn_t gru_intr(int irq, void *dev_id); | |
521 | extern int gru_handle_user_call_os(unsigned long address); | |
522 | extern int gru_user_flush_tlb(unsigned long arg); | |
523 | extern int gru_user_unload_context(unsigned long arg); | |
524 | extern int gru_get_exception_detail(unsigned long arg); | |
525 | extern int gru_set_task_slice(long address); | |
526 | extern int gru_cpu_fault_map_id(void); | |
527 | extern struct vm_area_struct *gru_find_vma(unsigned long vaddr); | |
528 | extern void gru_flush_all_tlb(struct gru_state *gru); | |
529 | extern int gru_proc_init(void); | |
530 | extern void gru_proc_exit(void); | |
531 | ||
532 | extern unsigned long reserve_gru_cb_resources(struct gru_state *gru, | |
533 | int cbr_au_count, char *cbmap); | |
534 | extern unsigned long reserve_gru_ds_resources(struct gru_state *gru, | |
535 | int dsr_au_count, char *dsmap); | |
536 | extern int gru_fault(struct vm_area_struct *, struct vm_fault *vmf); | |
537 | extern struct gru_mm_struct *gru_register_mmu_notifier(void); | |
538 | extern void gru_drop_mmu_notifier(struct gru_mm_struct *gms); | |
539 | ||
540 | extern void gru_flush_tlb_range(struct gru_mm_struct *gms, unsigned long start, | |
541 | unsigned long len); | |
542 | ||
543 | extern unsigned long options; | |
544 | ||
545 | #endif /* __GRUTABLES_H__ */ |