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authorJack Steiner <steiner@sgi.com>2008-07-30 01:33:54 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-30 12:41:47 -0400
commit4c921d4d8aa74140597fd8736261837f73ca6e7a (patch)
tree54a0d98c8257f633af599177bd66f33d58c19ca7
parent34d8a380d784d1fbea941a68beebdd7f9a3bebdf (diff)
GRU Driver: GRU instructions & macros
This patchs contains macros & inline functions used to issue instructions to the GRU. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat
-rw-r--r--drivers/misc/sgi-gru/gru_instructions.h679
1 files changed, 679 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/gru_instructions.h b/drivers/misc/sgi-gru/gru_instructions.h
new file mode 100644
index 000000000000..3159b261c5a7
--- /dev/null
+++ b/drivers/misc/sgi-gru/gru_instructions.h
@@ -0,0 +1,679 @@
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_INSTRUCTIONS_H__
20#define __GRU_INSTRUCTIONS_H__
21
22#define gru_flush_cache_hook(p)
23#define gru_emulator_wait_hook(p, w)
24
25/*
26 * Architecture dependent functions
27 */
28
29#if defined CONFIG_IA64
30#include <linux/compiler.h>
31#include <asm/intrinsics.h>
32#define __flush_cache(p) ia64_fc(p)
33/* Use volatile on IA64 to ensure ordering via st4.rel */
34#define gru_ordered_store_int(p,v) \
35 do { \
36 barrier(); \
37 *((volatile int *)(p)) = v; /* force st.rel */ \
38 } while (0)
39#elif defined CONFIG_X86_64
40#define __flush_cache(p) clflush(p)
41#define gru_ordered_store_int(p,v) \
42 do { \
43 barrier(); \
44 *(int *)p = v; \
45 } while (0)
46#else
47#error "Unsupported architecture"
48#endif
49
50/*
51 * Control block status and exception codes
52 */
53#define CBS_IDLE 0
54#define CBS_EXCEPTION 1
55#define CBS_ACTIVE 2
56#define CBS_CALL_OS 3
57
58/* CB substatus bitmasks */
59#define CBSS_MSG_QUEUE_MASK 7
60#define CBSS_IMPLICIT_ABORT_ACTIVE_MASK 8
61
62/* CB substatus message queue values (low 3 bits of substatus) */
63#define CBSS_NO_ERROR 0
64#define CBSS_LB_OVERFLOWED 1
65#define CBSS_QLIMIT_REACHED 2
66#define CBSS_PAGE_OVERFLOW 3
67#define CBSS_AMO_NACKED 4
68#define CBSS_PUT_NACKED 5
69
70/*
71 * Structure used to fetch exception detail for CBs that terminate with
72 * CBS_EXCEPTION
73 */
74struct control_block_extended_exc_detail {
75 unsigned long cb;
76 int opc;
77 int ecause;
78 int exopc;
79 long exceptdet0;
80 int exceptdet1;
81};
82
83/*
84 * Instruction formats
85 */
86
87/*
88 * Generic instruction format.
89 * This definition has precise bit field definitions.
90 */
91struct gru_instruction_bits {
92 /* DW 0 - low */
93 unsigned int icmd: 1;
94 unsigned char ima: 3; /* CB_DelRep, unmapped mode */
95 unsigned char reserved0: 4;
96 unsigned int xtype: 3;
97 unsigned int iaa0: 2;
98 unsigned int iaa1: 2;
99 unsigned char reserved1: 1;
100 unsigned char opc: 8; /* opcode */
101 unsigned char exopc: 8; /* extended opcode */
102 /* DW 0 - high */
103 unsigned int idef2: 22; /* TRi0 */
104 unsigned char reserved2: 2;
105 unsigned char istatus: 2;
106 unsigned char isubstatus:4;
107 unsigned char reserved3: 2;
108 /* DW 1 */
109 unsigned long idef4; /* 42 bits: TRi1, BufSize */
110 /* DW 2-6 */
111 unsigned long idef1; /* BAddr0 */
112 unsigned long idef5; /* Nelem */
113 unsigned long idef6; /* Stride, Operand1 */
114 unsigned long idef3; /* BAddr1, Value, Operand2 */
115 unsigned long reserved4;
116 /* DW 7 */
117 unsigned long avalue; /* AValue */
118};
119
120/*
121 * Generic instruction with friendlier names. This format is used
122 * for inline instructions.
123 */
124struct gru_instruction {
125 /* DW 0 */
126 unsigned int op32; /* icmd,xtype,iaa0,ima,opc */
127 unsigned int tri0;
128 unsigned long tri1_bufsize; /* DW 1 */
129 unsigned long baddr0; /* DW 2 */
130 unsigned long nelem; /* DW 3 */
131 unsigned long op1_stride; /* DW 4 */
132 unsigned long op2_value_baddr1; /* DW 5 */
133 unsigned long reserved0; /* DW 6 */
134 unsigned long avalue; /* DW 7 */
135};
136
137/* Some shifts and masks for the low 32 bits of a GRU command */
138#define GRU_CB_ICMD_SHFT 0
139#define GRU_CB_ICMD_MASK 0x1
140#define GRU_CB_XTYPE_SHFT 8
141#define GRU_CB_XTYPE_MASK 0x7
142#define GRU_CB_IAA0_SHFT 11
143#define GRU_CB_IAA0_MASK 0x3
144#define GRU_CB_IAA1_SHFT 13
145#define GRU_CB_IAA1_MASK 0x3
146#define GRU_CB_IMA_SHFT 1
147#define GRU_CB_IMA_MASK 0x3
148#define GRU_CB_OPC_SHFT 16
149#define GRU_CB_OPC_MASK 0xff
150#define GRU_CB_EXOPC_SHFT 24
151#define GRU_CB_EXOPC_MASK 0xff
152
153/* GRU instruction opcodes (opc field) */
154#define OP_NOP 0x00
155#define OP_BCOPY 0x01
156#define OP_VLOAD 0x02
157#define OP_IVLOAD 0x03
158#define OP_VSTORE 0x04
159#define OP_IVSTORE 0x05
160#define OP_VSET 0x06
161#define OP_IVSET 0x07
162#define OP_MESQ 0x08
163#define OP_GAMXR 0x09
164#define OP_GAMIR 0x0a
165#define OP_GAMIRR 0x0b
166#define OP_GAMER 0x0c
167#define OP_GAMERR 0x0d
168#define OP_BSTORE 0x0e
169#define OP_VFLUSH 0x0f
170
171
172/* Extended opcodes values (exopc field) */
173
174/* GAMIR - AMOs with implicit operands */
175#define EOP_IR_FETCH 0x01 /* Plain fetch of memory */
176#define EOP_IR_CLR 0x02 /* Fetch and clear */
177#define EOP_IR_INC 0x05 /* Fetch and increment */
178#define EOP_IR_DEC 0x07 /* Fetch and decrement */
179#define EOP_IR_QCHK1 0x0d /* Queue check, 64 byte msg */
180#define EOP_IR_QCHK2 0x0e /* Queue check, 128 byte msg */
181
182/* GAMIRR - Registered AMOs with implicit operands */
183#define EOP_IRR_FETCH 0x01 /* Registered fetch of memory */
184#define EOP_IRR_CLR 0x02 /* Registered fetch and clear */
185#define EOP_IRR_INC 0x05 /* Registered fetch and increment */
186#define EOP_IRR_DEC 0x07 /* Registered fetch and decrement */
187#define EOP_IRR_DECZ 0x0f /* Registered fetch and decrement, update on zero*/
188
189/* GAMER - AMOs with explicit operands */
190#define EOP_ER_SWAP 0x00 /* Exchange argument and memory */
191#define EOP_ER_OR 0x01 /* Logical OR with memory */
192#define EOP_ER_AND 0x02 /* Logical AND with memory */
193#define EOP_ER_XOR 0x03 /* Logical XOR with memory */
194#define EOP_ER_ADD 0x04 /* Add value to memory */
195#define EOP_ER_CSWAP 0x08 /* Compare with operand2, write operand1 if match*/
196#define EOP_ER_CADD 0x0c /* Queue check, operand1*64 byte msg */
197
198/* GAMERR - Registered AMOs with explicit operands */
199#define EOP_ERR_SWAP 0x00 /* Exchange argument and memory */
200#define EOP_ERR_OR 0x01 /* Logical OR with memory */
201#define EOP_ERR_AND 0x02 /* Logical AND with memory */
202#define EOP_ERR_XOR 0x03 /* Logical XOR with memory */
203#define EOP_ERR_ADD 0x04 /* Add value to memory */
204#define EOP_ERR_CSWAP 0x08 /* Compare with operand2, write operand1 if match*/
205#define EOP_ERR_EPOLL 0x09 /* Poll for equality */
206#define EOP_ERR_NPOLL 0x0a /* Poll for inequality */
207
208/* GAMXR - SGI Arithmetic unit */
209#define EOP_XR_CSWAP 0x0b /* Masked compare exchange */
210
211
212/* Transfer types (xtype field) */
213#define XTYPE_B 0x0 /* byte */
214#define XTYPE_S 0x1 /* short (2-byte) */
215#define XTYPE_W 0x2 /* word (4-byte) */
216#define XTYPE_DW 0x3 /* doubleword (8-byte) */
217#define XTYPE_CL 0x6 /* cacheline (64-byte) */
218
219
220/* Instruction access attributes (iaa0, iaa1 fields) */
221#define IAA_RAM 0x0 /* normal cached RAM access */
222#define IAA_NCRAM 0x2 /* noncoherent RAM access */
223#define IAA_MMIO 0x1 /* noncoherent memory-mapped I/O space */
224#define IAA_REGISTER 0x3 /* memory-mapped registers, etc. */
225
226
227/* Instruction mode attributes (ima field) */
228#define IMA_MAPPED 0x0 /* Virtual mode */
229#define IMA_CB_DELAY 0x1 /* hold read responses until status changes */
230#define IMA_UNMAPPED 0x2 /* bypass the TLBs (OS only) */
231#define IMA_INTERRUPT 0x4 /* Interrupt when instruction completes */
232
233/* CBE ecause bits */
234#define CBE_CAUSE_RI (1 << 0)
235#define CBE_CAUSE_INVALID_INSTRUCTION (1 << 1)
236#define CBE_CAUSE_UNMAPPED_MODE_FORBIDDEN (1 << 2)
237#define CBE_CAUSE_PE_CHECK_DATA_ERROR (1 << 3)
238#define CBE_CAUSE_IAA_GAA_MISMATCH (1 << 4)
239#define CBE_CAUSE_DATA_SEGMENT_LIMIT_EXCEPTION (1 << 5)
240#define CBE_CAUSE_OS_FATAL_TLB_FAULT (1 << 6)
241#define CBE_CAUSE_EXECUTION_HW_ERROR (1 << 7)
242#define CBE_CAUSE_TLBHW_ERROR (1 << 8)
243#define CBE_CAUSE_RA_REQUEST_TIMEOUT (1 << 9)
244#define CBE_CAUSE_HA_REQUEST_TIMEOUT (1 << 10)
245#define CBE_CAUSE_RA_RESPONSE_FATAL (1 << 11)
246#define CBE_CAUSE_RA_RESPONSE_NON_FATAL (1 << 12)
247#define CBE_CAUSE_HA_RESPONSE_FATAL (1 << 13)
248#define CBE_CAUSE_HA_RESPONSE_NON_FATAL (1 << 14)
249#define CBE_CAUSE_ADDRESS_SPACE_DECODE_ERROR (1 << 15)
250#define CBE_CAUSE_RESPONSE_DATA_ERROR (1 << 16)
251#define CBE_CAUSE_PROTOCOL_STATE_DATA_ERROR (1 << 17)
252
253/*
254 * Exceptions are retried for the following cases. If any OTHER bits are set
255 * in ecause, the exception is not retryable.
256 */
257#define EXCEPTION_RETRY_BITS (CBE_CAUSE_RESPONSE_DATA_ERROR | \
258 CBE_CAUSE_RA_REQUEST_TIMEOUT | \
259 CBE_CAUSE_TLBHW_ERROR | \
260 CBE_CAUSE_HA_REQUEST_TIMEOUT)
261
262/* Message queue head structure */
263union gru_mesqhead {
264 unsigned long val;
265 struct {
266 unsigned int head;
267 unsigned int limit;
268 };
269};
270
271
272/* Generate the low word of a GRU instruction */
273static inline unsigned int
274__opword(unsigned char opcode, unsigned char exopc, unsigned char xtype,
275 unsigned char iaa0, unsigned char iaa1,
276 unsigned char ima)
277{
278 return (1 << GRU_CB_ICMD_SHFT) |
279 (iaa0 << GRU_CB_IAA0_SHFT) |
280 (iaa1 << GRU_CB_IAA1_SHFT) |
281 (ima << GRU_CB_IMA_SHFT) |
282 (xtype << GRU_CB_XTYPE_SHFT) |
283 (opcode << GRU_CB_OPC_SHFT) |
284 (exopc << GRU_CB_EXOPC_SHFT);
285}
286
287/*
288 * Prefetch a cacheline. Fetch is unconditional. Must page fault if
289 * no valid TLB entry is found.
290 * ??? should I use actual "load" or hardware prefetch???
291 */
292static inline void gru_prefetch(void *p)
293{
294 *(volatile char *)p;
295}
296
297/*
298 * Architecture specific intrinsics
299 */
300static inline void gru_flush_cache(void *p)
301{
302 __flush_cache(p);
303}
304
305/*
306 * Store the lower 32 bits of the command including the "start" bit. Then
307 * start the instruction executing.
308 */
309static inline void gru_start_instruction(struct gru_instruction *ins, int op32)
310{
311 gru_ordered_store_int(ins, op32);
312}
313
314
315/* Convert "hints" to IMA */
316#define CB_IMA(h) ((h) | IMA_UNMAPPED)
317
318/* Convert data segment cache line index into TRI0 / TRI1 value */
319#define GRU_DINDEX(i) ((i) * GRU_CACHE_LINE_BYTES)
320
321/* Inline functions for GRU instructions.
322 * Note:
323 * - nelem and stride are in elements
324 * - tri0/tri1 is in bytes for the beginning of the data segment.
325 */
326static inline void gru_vload(void *cb, unsigned long mem_addr,
327 unsigned int tri0, unsigned char xtype, unsigned long nelem,
328 unsigned long stride, unsigned long hints)
329{
330 struct gru_instruction *ins = (struct gru_instruction *)cb;
331
332 ins->baddr0 = (long)mem_addr;
333 ins->nelem = nelem;
334 ins->tri0 = tri0;
335 ins->op1_stride = stride;
336 gru_start_instruction(ins, __opword(OP_VLOAD, 0, xtype, IAA_RAM, 0,
337 CB_IMA(hints)));
338}
339
340static inline void gru_vstore(void *cb, unsigned long mem_addr,
341 unsigned int tri0, unsigned char xtype, unsigned long nelem,
342 unsigned long stride, unsigned long hints)
343{
344 struct gru_instruction *ins = (void *)cb;
345
346 ins->baddr0 = (long)mem_addr;
347 ins->nelem = nelem;
348 ins->tri0 = tri0;
349 ins->op1_stride = stride;
350 gru_start_instruction(ins, __opword(OP_VSTORE, 0, xtype, IAA_RAM, 0,
351 CB_IMA(hints)));
352}
353
354static inline void gru_ivload(void *cb, unsigned long mem_addr,
355 unsigned int tri0, unsigned int tri1, unsigned char xtype,
356 unsigned long nelem, unsigned long hints)
357{
358 struct gru_instruction *ins = (void *)cb;
359
360 ins->baddr0 = (long)mem_addr;
361 ins->nelem = nelem;
362 ins->tri0 = tri0;
363 ins->tri1_bufsize = tri1;
364 gru_start_instruction(ins, __opword(OP_IVLOAD, 0, xtype, IAA_RAM, 0,
365 CB_IMA(hints)));
366}
367
368static inline void gru_ivstore(void *cb, unsigned long mem_addr,
369 unsigned int tri0, unsigned int tri1,
370 unsigned char xtype, unsigned long nelem, unsigned long hints)
371{
372 struct gru_instruction *ins = (void *)cb;
373
374 ins->baddr0 = (long)mem_addr;
375 ins->nelem = nelem;
376 ins->tri0 = tri0;
377 ins->tri1_bufsize = tri1;
378 gru_start_instruction(ins, __opword(OP_IVSTORE, 0, xtype, IAA_RAM, 0,
379 CB_IMA(hints)));
380}
381
382static inline void gru_vset(void *cb, unsigned long mem_addr,
383 unsigned long value, unsigned char xtype, unsigned long nelem,
384 unsigned long stride, unsigned long hints)
385{
386 struct gru_instruction *ins = (void *)cb;
387
388 ins->baddr0 = (long)mem_addr;
389 ins->op2_value_baddr1 = value;
390 ins->nelem = nelem;
391 ins->op1_stride = stride;
392 gru_start_instruction(ins, __opword(OP_VSET, 0, xtype, IAA_RAM, 0,
393 CB_IMA(hints)));
394}
395
396static inline void gru_ivset(void *cb, unsigned long mem_addr,
397 unsigned int tri1, unsigned long value, unsigned char xtype,
398 unsigned long nelem, unsigned long hints)
399{
400 struct gru_instruction *ins = (void *)cb;
401
402 ins->baddr0 = (long)mem_addr;
403 ins->op2_value_baddr1 = value;
404 ins->nelem = nelem;
405 ins->tri1_bufsize = tri1;
406 gru_start_instruction(ins, __opword(OP_IVSET, 0, xtype, IAA_RAM, 0,
407 CB_IMA(hints)));
408}
409
410static inline void gru_vflush(void *cb, unsigned long mem_addr,
411 unsigned long nelem, unsigned char xtype, unsigned long stride,
412 unsigned long hints)
413{
414 struct gru_instruction *ins = (void *)cb;
415
416 ins->baddr0 = (long)mem_addr;
417 ins->op1_stride = stride;
418 ins->nelem = nelem;
419 gru_start_instruction(ins, __opword(OP_VFLUSH, 0, xtype, IAA_RAM, 0,
420 CB_IMA(hints)));
421}
422
423static inline void gru_nop(void *cb, int hints)
424{
425 struct gru_instruction *ins = (void *)cb;
426
427 gru_start_instruction(ins, __opword(OP_NOP, 0, 0, 0, 0, CB_IMA(hints)));
428}
429
430
431static inline void gru_bcopy(void *cb, const unsigned long src,
432 unsigned long dest,
433 unsigned int tri0, unsigned int xtype, unsigned long nelem,
434 unsigned int bufsize, unsigned long hints)
435{
436 struct gru_instruction *ins = (void *)cb;
437
438 ins->baddr0 = (long)src;
439 ins->op2_value_baddr1 = (long)dest;
440 ins->nelem = nelem;
441 ins->tri0 = tri0;
442 ins->tri1_bufsize = bufsize;
443 gru_start_instruction(ins, __opword(OP_BCOPY, 0, xtype, IAA_RAM,
444 IAA_RAM, CB_IMA(hints)));
445}
446
447static inline void gru_bstore(void *cb, const unsigned long src,
448 unsigned long dest, unsigned int tri0, unsigned int xtype,
449 unsigned long nelem, unsigned long hints)
450{
451 struct gru_instruction *ins = (void *)cb;
452
453 ins->baddr0 = (long)src;
454 ins->op2_value_baddr1 = (long)dest;
455 ins->nelem = nelem;
456 ins->tri0 = tri0;
457 gru_start_instruction(ins, __opword(OP_BSTORE, 0, xtype, 0, IAA_RAM,
458 CB_IMA(hints)));
459}
460
461static inline void gru_gamir(void *cb, int exopc, unsigned long src,
462 unsigned int xtype, unsigned long hints)
463{
464 struct gru_instruction *ins = (void *)cb;
465
466 ins->baddr0 = (long)src;
467 gru_start_instruction(ins, __opword(OP_GAMIR, exopc, xtype, IAA_RAM, 0,
468 CB_IMA(hints)));
469}
470
471static inline void gru_gamirr(void *cb, int exopc, unsigned long src,
472 unsigned int xtype, unsigned long hints)
473{
474 struct gru_instruction *ins = (void *)cb;
475
476 ins->baddr0 = (long)src;
477 gru_start_instruction(ins, __opword(OP_GAMIRR, exopc, xtype, IAA_RAM, 0,
478 CB_IMA(hints)));
479}
480
481static inline void gru_gamer(void *cb, int exopc, unsigned long src,
482 unsigned int xtype,
483 unsigned long operand1, unsigned long operand2,
484 unsigned long hints)
485{
486 struct gru_instruction *ins = (void *)cb;
487
488 ins->baddr0 = (long)src;
489 ins->op1_stride = operand1;
490 ins->op2_value_baddr1 = operand2;
491 gru_start_instruction(ins, __opword(OP_GAMER, exopc, xtype, IAA_RAM, 0,
492 CB_IMA(hints)));
493}
494
495static inline void gru_gamerr(void *cb, int exopc, unsigned long src,
496 unsigned int xtype, unsigned long operand1,
497 unsigned long operand2, unsigned long hints)
498{
499 struct gru_instruction *ins = (void *)cb;
500
501 ins->baddr0 = (long)src;
502 ins->op1_stride = operand1;
503 ins->op2_value_baddr1 = operand2;
504 gru_start_instruction(ins, __opword(OP_GAMERR, exopc, xtype, IAA_RAM, 0,
505 CB_IMA(hints)));
506}
507
508static inline void gru_gamxr(void *cb, unsigned long src,
509 unsigned int tri0, unsigned long hints)
510{
511 struct gru_instruction *ins = (void *)cb;
512
513 ins->baddr0 = (long)src;
514 ins->nelem = 4;
515 gru_start_instruction(ins, __opword(OP_GAMXR, EOP_XR_CSWAP, XTYPE_DW,
516 IAA_RAM, 0, CB_IMA(hints)));
517}
518
519static inline void gru_mesq(void *cb, unsigned long queue,
520 unsigned long tri0, unsigned long nelem,
521 unsigned long hints)
522{
523 struct gru_instruction *ins = (void *)cb;
524
525 ins->baddr0 = (long)queue;
526 ins->nelem = nelem;
527 ins->tri0 = tri0;
528 gru_start_instruction(ins, __opword(OP_MESQ, 0, XTYPE_CL, IAA_RAM, 0,
529 CB_IMA(hints)));
530}
531
532static inline unsigned long gru_get_amo_value(void *cb)
533{
534 struct gru_instruction *ins = (void *)cb;
535
536 return ins->avalue;
537}
538
539static inline int gru_get_amo_value_head(void *cb)
540{
541 struct gru_instruction *ins = (void *)cb;
542
543 return ins->avalue & 0xffffffff;
544}
545
546static inline int gru_get_amo_value_limit(void *cb)
547{
548 struct gru_instruction *ins = (void *)cb;
549
550 return ins->avalue >> 32;
551}
552
553static inline union gru_mesqhead gru_mesq_head(int head, int limit)
554{
555 union gru_mesqhead mqh;
556
557 mqh.head = head;
558 mqh.limit = limit;
559 return mqh;
560}
561
562/*
563 * Get struct control_block_extended_exc_detail for CB.
564 */
565extern int gru_get_cb_exception_detail(void *cb,
566 struct control_block_extended_exc_detail *excdet);
567
568#define GRU_EXC_STR_SIZE 256
569
570extern int gru_check_status_proc(void *cb);
571extern int gru_wait_proc(void *cb);
572extern void gru_wait_abort_proc(void *cb);
573
574/*
575 * Control block definition for checking status
576 */
577struct gru_control_block_status {
578 unsigned int icmd :1;
579 unsigned int unused1 :31;
580 unsigned int unused2 :24;
581 unsigned int istatus :2;
582 unsigned int isubstatus :4;
583 unsigned int inused3 :2;
584};
585
586/* Get CB status */
587static inline int gru_get_cb_status(void *cb)
588{
589 struct gru_control_block_status *cbs = (void *)cb;
590
591 return cbs->istatus;
592}
593
594/* Get CB message queue substatus */
595static inline int gru_get_cb_message_queue_substatus(void *cb)
596{
597 struct gru_control_block_status *cbs = (void *)cb;
598
599 return cbs->isubstatus & CBSS_MSG_QUEUE_MASK;
600}
601
602/* Get CB substatus */
603static inline int gru_get_cb_substatus(void *cb)
604{
605 struct gru_control_block_status *cbs = (void *)cb;
606
607 return cbs->isubstatus;
608}
609
610/* Check the status of a CB. If the CB is in UPM mode, call the
611 * OS to handle the UPM status.
612 * Returns the CB status field value (0 for normal completion)
613 */
614static inline int gru_check_status(void *cb)
615{
616 struct gru_control_block_status *cbs = (void *)cb;
617 int ret = cbs->istatus;
618
619 if (ret == CBS_CALL_OS)
620 ret = gru_check_status_proc(cb);
621 return ret;
622}
623
624/* Wait for CB to complete.
625 * Returns the CB status field value (0 for normal completion)
626 */
627static inline int gru_wait(void *cb)
628{
629 struct gru_control_block_status *cbs = (void *)cb;
630 int ret = cbs->istatus;;
631
632 if (ret != CBS_IDLE)
633 ret = gru_wait_proc(cb);
634 return ret;
635}
636
637/* Wait for CB to complete. Aborts program if error. (Note: error does NOT
638 * mean TLB mis - only fatal errors such as memory parity error or user
639 * bugs will cause termination.
640 */
641static inline void gru_wait_abort(void *cb)
642{
643 struct gru_control_block_status *cbs = (void *)cb;
644
645 if (cbs->istatus != CBS_IDLE)
646 gru_wait_abort_proc(cb);
647}
648
649
650/*
651 * Get a pointer to a control block
652 * gseg - GSeg address returned from gru_get_thread_gru_segment()
653 * index - index of desired CB
654 */
655static inline void *gru_get_cb_pointer(void *gseg,
656 int index)
657{
658 return gseg + GRU_CB_BASE + index * GRU_HANDLE_STRIDE;
659}
660
661/*
662 * Get a pointer to a cacheline in the data segment portion of a GSeg
663 * gseg - GSeg address returned from gru_get_thread_gru_segment()
664 * index - index of desired cache line
665 */
666static inline void *gru_get_data_pointer(void *gseg, int index)
667{
668 return gseg + GRU_DS_BASE + index * GRU_CACHE_LINE_BYTES;
669}
670
671/*
672 * Convert a vaddr into the tri index within the GSEG
673 * vaddr - virtual address of within gseg
674 */
675static inline int gru_get_tri(void *vaddr)
676{
677 return ((unsigned long)vaddr & (GRU_GSEG_PAGESIZE - 1)) - GRU_DS_BASE;
678}
679#endif /* __GRU_INSTRUCTIONS_H__ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 22:50:57 -0500