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-rw-r--r--drivers/misc/sgi-gru/gru.h67
-rw-r--r--drivers/misc/sgi-gru/grulib.h97
-rw-r--r--drivers/misc/sgi-gru/grutables.h545
3 files changed, 709 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/gru.h b/drivers/misc/sgi-gru/gru.h
new file mode 100644
index 000000000000..40df7cb3f0a5
--- /dev/null
+++ b/drivers/misc/sgi-gru/gru.h
@@ -0,0 +1,67 @@
1/*
2 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation; either version 2.1 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19#ifndef __GRU_H__
20#define __GRU_H__
21
22/*
23 * GRU architectural definitions
24 */
25#define GRU_CACHE_LINE_BYTES 64
26#define GRU_HANDLE_STRIDE 256
27#define GRU_CB_BASE 0
28#define GRU_DS_BASE 0x20000
29
30/*
31 * Size used to map GRU GSeg
32 */
33#if defined CONFIG_IA64
34#define GRU_GSEG_PAGESIZE (256 * 1024UL)
35#elif defined CONFIG_X86_64
36#define GRU_GSEG_PAGESIZE (256 * 1024UL) /* ZZZ 2MB ??? */
37#else
38#error "Unsupported architecture"
39#endif
40
41/*
42 * Structure for obtaining GRU resource information
43 */
44struct gru_chiplet_info {
45 int node;
46 int chiplet;
47 int blade;
48 int total_dsr_bytes;
49 int total_cbr;
50 int total_user_dsr_bytes;
51 int total_user_cbr;
52 int free_user_dsr_bytes;
53 int free_user_cbr;
54};
55
56/* Flags for GRU options on the gru_create_context() call */
57/* Select one of the follow 4 options to specify how TLB misses are handled */
58#define GRU_OPT_MISS_DEFAULT 0x0000 /* Use default mode */
59#define GRU_OPT_MISS_USER_POLL 0x0001 /* User will poll CB for faults */
60#define GRU_OPT_MISS_FMM_INTR 0x0002 /* Send interrupt to cpu to
61 handle fault */
62#define GRU_OPT_MISS_FMM_POLL 0x0003 /* Use system polling thread */
63#define GRU_OPT_MISS_MASK 0x0003 /* Mask for TLB MISS option */
64
65
66
67#endif /* __GRU_H__ */
diff --git a/drivers/misc/sgi-gru/grulib.h b/drivers/misc/sgi-gru/grulib.h
new file mode 100644
index 000000000000..e56e196a6998
--- /dev/null
+++ b/drivers/misc/sgi-gru/grulib.h
@@ -0,0 +1,97 @@
1/*
2 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation; either version 2.1 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19#ifndef __GRULIB_H__
20#define __GRULIB_H__
21
22#define GRU_BASENAME "gru"
23#define GRU_FULLNAME "/dev/gru"
24#define GRU_IOCTL_NUM 'G'
25
26/*
27 * Maximum number of GRU segments that a user can have open
28 * ZZZ temp - set high for testing. Revisit.
29 */
30#define GRU_MAX_OPEN_CONTEXTS 32
31
32/* Set Number of Request Blocks */
33#define GRU_CREATE_CONTEXT _IOWR(GRU_IOCTL_NUM, 1, void *)
34
35/* Register task as using the slice */
36#define GRU_SET_TASK_SLICE _IOWR(GRU_IOCTL_NUM, 5, void *)
37
38/* Fetch exception detail */
39#define GRU_USER_GET_EXCEPTION_DETAIL _IOWR(GRU_IOCTL_NUM, 6, void *)
40
41/* For user call_os handling - normally a TLB fault */
42#define GRU_USER_CALL_OS _IOWR(GRU_IOCTL_NUM, 8, void *)
43
44/* For user unload context */
45#define GRU_USER_UNLOAD_CONTEXT _IOWR(GRU_IOCTL_NUM, 9, void *)
46
47/* For fetching GRU chiplet status */
48#define GRU_GET_CHIPLET_STATUS _IOWR(GRU_IOCTL_NUM, 10, void *)
49
50/* For user TLB flushing (primarily for tests) */
51#define GRU_USER_FLUSH_TLB _IOWR(GRU_IOCTL_NUM, 50, void *)
52
53/* Get some config options (primarily for tests & emulator) */
54#define GRU_GET_CONFIG_INFO _IOWR(GRU_IOCTL_NUM, 51, void *)
55
56#define CONTEXT_WINDOW_BYTES(th) (GRU_GSEG_PAGESIZE * (th))
57#define THREAD_POINTER(p, th) (p + GRU_GSEG_PAGESIZE * (th))
58
59/*
60 * Structure used to pass TLB flush parameters to the driver
61 */
62struct gru_create_context_req {
63 unsigned long gseg;
64 unsigned int data_segment_bytes;
65 unsigned int control_blocks;
66 unsigned int maximum_thread_count;
67 unsigned int options;
68};
69
70/*
71 * Structure used to pass unload context parameters to the driver
72 */
73struct gru_unload_context_req {
74 unsigned long gseg;
75};
76
77/*
78 * Structure used to pass TLB flush parameters to the driver
79 */
80struct gru_flush_tlb_req {
81 unsigned long gseg;
82 unsigned long vaddr;
83 size_t len;
84};
85
86/*
87 * GRU configuration info (temp - for testing)
88 */
89struct gru_config_info {
90 int cpus;
91 int blades;
92 int nodes;
93 int chiplets;
94 int fill[16];
95};
96
97#endif /* __GRULIB_H__ */
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
new file mode 100644
index 000000000000..f97d84640129
--- /dev/null
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -0,0 +1,545 @@
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
89extern struct gru_stats_s gru_stats;
90extern struct gru_blade_state *gru_base[];
91extern 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 */
102struct 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
230struct 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 */
236struct 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
243struct 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 */
258struct 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 */
270struct 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 */
324struct 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 */
369struct 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
470static inline void __lock_handle(void *h)
471{
472 while (test_and_set_bit(1, h))
473 cpu_relax();
474}
475
476static inline void __unlock_handle(void *h)
477{
478 clear_bit(1, h);
479}
480
481static inline void lock_cch_handle(struct gru_context_configuration_handle *cch)
482{
483 __lock_handle(cch);
484}
485
486static inline void unlock_cch_handle(struct gru_context_configuration_handle
487 *cch)
488{
489 __unlock_handle(cch);
490}
491
492static inline void lock_tgh_handle(struct gru_tlb_global_handle *tgh)
493{
494 __lock_handle(tgh);
495}
496
497static inline void unlock_tgh_handle(struct gru_tlb_global_handle *tgh)
498{
499 __unlock_handle(tgh);
500}
501
502/*-----------------------------------------------------------------------------
503 * Function prototypes & externs
504 */
505struct gru_unload_context_req;
506
507extern struct vm_operations_struct gru_vm_ops;
508extern struct device *grudev;
509
510extern struct gru_vma_data *gru_alloc_vma_data(struct vm_area_struct *vma,
511 int tsid);
512extern struct gru_thread_state *gru_find_thread_state(struct vm_area_struct
513 *vma, int tsid);
514extern struct gru_thread_state *gru_alloc_thread_state(struct vm_area_struct
515 *vma, int tsid);
516extern void gru_unload_context(struct gru_thread_state *gts, int savestate);
517extern void gts_drop(struct gru_thread_state *gts);
518extern void gru_tgh_flush_init(struct gru_state *gru);
519extern int gru_kservices_init(struct gru_state *gru);
520extern irqreturn_t gru_intr(int irq, void *dev_id);
521extern int gru_handle_user_call_os(unsigned long address);
522extern int gru_user_flush_tlb(unsigned long arg);
523extern int gru_user_unload_context(unsigned long arg);
524extern int gru_get_exception_detail(unsigned long arg);
525extern int gru_set_task_slice(long address);
526extern int gru_cpu_fault_map_id(void);
527extern struct vm_area_struct *gru_find_vma(unsigned long vaddr);
528extern void gru_flush_all_tlb(struct gru_state *gru);
529extern int gru_proc_init(void);
530extern void gru_proc_exit(void);
531
532extern unsigned long reserve_gru_cb_resources(struct gru_state *gru,
533 int cbr_au_count, char *cbmap);
534extern unsigned long reserve_gru_ds_resources(struct gru_state *gru,
535 int dsr_au_count, char *dsmap);
536extern int gru_fault(struct vm_area_struct *, struct vm_fault *vmf);
537extern struct gru_mm_struct *gru_register_mmu_notifier(void);
538extern void gru_drop_mmu_notifier(struct gru_mm_struct *gms);
539
540extern void gru_flush_tlb_range(struct gru_mm_struct *gms, unsigned long start,
541 unsigned long len);
542
543extern unsigned long options;
544
545#endif /* __GRUTABLES_H__ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 21:03:07 -0500