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[deliverable/linux.git] / drivers / misc / sgi-gru / gru_instructions.h
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4c921d4d
JS		 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
fe5bb6b0
JS		 22extern int gru_check_status_proc(void *cb);
23extern int gru_wait_proc(void *cb);
24extern void gru_wait_abort_proc(void *cb);
25
26
4c921d4d
JS		 27
28/*
29 * Architecture dependent functions
30 */
31
923f7f69 32#if defined(CONFIG_IA64)
4c921d4d
JS		 33#include <linux/compiler.h>
34#include <asm/intrinsics.h>
fe5bb6b0 35#define __flush_cache(p) ia64_fc((unsigned long)p)
4c921d4d 36/* Use volatile on IA64 to ensure ordering via st4.rel */
57ebb034 37#define gru_ordered_store_ulong(p, v) \
4c921d4d
JS		 38 do { \
39 barrier(); \
57ebb034 40 *((volatile unsigned long *)(p)) = v; /* force st.rel */ \
4c921d4d 41 } while (0)
923f7f69 42#elif defined(CONFIG_X86_64)
4c921d4d 43#define __flush_cache(p) clflush(p)
57ebb034 44#define gru_ordered_store_ulong(p, v) \
4c921d4d
JS		 45 do { \
46 barrier(); \
57ebb034 47 *(unsigned long *)p = v; \
4c921d4d
JS		 48 } while (0)
49#else
50#error "Unsupported architecture"
51#endif
52
53/*
54 * Control block status and exception codes
55 */
56#define CBS_IDLE 0
57#define CBS_EXCEPTION 1
58#define CBS_ACTIVE 2
59#define CBS_CALL_OS 3
60
61/* CB substatus bitmasks */
62#define CBSS_MSG_QUEUE_MASK 7
63#define CBSS_IMPLICIT_ABORT_ACTIVE_MASK 8
64
65/* CB substatus message queue values (low 3 bits of substatus) */
66#define CBSS_NO_ERROR 0
67#define CBSS_LB_OVERFLOWED 1
68#define CBSS_QLIMIT_REACHED 2
69#define CBSS_PAGE_OVERFLOW 3
70#define CBSS_AMO_NACKED 4
71#define CBSS_PUT_NACKED 5
72
73/*
74 * Structure used to fetch exception detail for CBs that terminate with
75 * CBS_EXCEPTION
76 */
77struct control_block_extended_exc_detail {
78 unsigned long cb;
79 int opc;
80 int ecause;
81 int exopc;
82 long exceptdet0;
83 int exceptdet1;
cd1334f0
JS		 84 int cbrstate;
85 int cbrexecstatus;
4c921d4d
JS		 86};
87
88/*
89 * Instruction formats
90 */
91
92/*
93 * Generic instruction format.
94 * This definition has precise bit field definitions.
95 */
96struct gru_instruction_bits {
97 /* DW 0 - low */
98 unsigned int icmd: 1;
99 unsigned char ima: 3; /* CB_DelRep, unmapped mode */
100 unsigned char reserved0: 4;
101 unsigned int xtype: 3;
102 unsigned int iaa0: 2;
103 unsigned int iaa1: 2;
104 unsigned char reserved1: 1;
105 unsigned char opc: 8; /* opcode */
106 unsigned char exopc: 8; /* extended opcode */
107 /* DW 0 - high */
108 unsigned int idef2: 22; /* TRi0 */
109 unsigned char reserved2: 2;
110 unsigned char istatus: 2;
111 unsigned char isubstatus:4;
cd1334f0
JS		 112 unsigned char reserved3: 1;
113 unsigned char tlb_fault_color: 1;
4c921d4d
JS		 114 /* DW 1 */
115 unsigned long idef4; /* 42 bits: TRi1, BufSize */
116 /* DW 2-6 */
117 unsigned long idef1; /* BAddr0 */
118 unsigned long idef5; /* Nelem */
119 unsigned long idef6; /* Stride, Operand1 */
120 unsigned long idef3; /* BAddr1, Value, Operand2 */
121 unsigned long reserved4;
122 /* DW 7 */
123 unsigned long avalue; /* AValue */
124};
125
126/*
127 * Generic instruction with friendlier names. This format is used
128 * for inline instructions.
129 */
130struct gru_instruction {
131 /* DW 0 */
57ebb034
JS		 132 union {
133 unsigned long op64; /* icmd,xtype,iaa0,ima,opc,tri0 */
134 struct {
135 unsigned int op32;
136 unsigned int tri0;
137 };
138 };
4c921d4d
JS		 139 unsigned long tri1_bufsize; /* DW 1 */
140 unsigned long baddr0; /* DW 2 */
141 unsigned long nelem; /* DW 3 */
142 unsigned long op1_stride; /* DW 4 */
143 unsigned long op2_value_baddr1; /* DW 5 */
144 unsigned long reserved0; /* DW 6 */
145 unsigned long avalue; /* DW 7 */
146};
147
57ebb034 148/* Some shifts and masks for the low 64 bits of a GRU command */
4c921d4d
JS		 149#define GRU_CB_ICMD_SHFT 0
150#define GRU_CB_ICMD_MASK 0x1
151#define GRU_CB_XTYPE_SHFT 8
152#define GRU_CB_XTYPE_MASK 0x7
153#define GRU_CB_IAA0_SHFT 11
154#define GRU_CB_IAA0_MASK 0x3
155#define GRU_CB_IAA1_SHFT 13
156#define GRU_CB_IAA1_MASK 0x3
157#define GRU_CB_IMA_SHFT 1
158#define GRU_CB_IMA_MASK 0x3
159#define GRU_CB_OPC_SHFT 16
160#define GRU_CB_OPC_MASK 0xff
161#define GRU_CB_EXOPC_SHFT 24
162#define GRU_CB_EXOPC_MASK 0xff
57ebb034
JS		 163#define GRU_IDEF2_SHFT 32
164#define GRU_IDEF2_MASK 0x3ffff
165#define GRU_ISTATUS_SHFT 56
166#define GRU_ISTATUS_MASK 0x3
4c921d4d
JS		 167
168/* GRU instruction opcodes (opc field) */
169#define OP_NOP 0x00
170#define OP_BCOPY 0x01
171#define OP_VLOAD 0x02
172#define OP_IVLOAD 0x03
173#define OP_VSTORE 0x04
174#define OP_IVSTORE 0x05
175#define OP_VSET 0x06
176#define OP_IVSET 0x07
177#define OP_MESQ 0x08
178#define OP_GAMXR 0x09
179#define OP_GAMIR 0x0a
180#define OP_GAMIRR 0x0b
181#define OP_GAMER 0x0c
182#define OP_GAMERR 0x0d
183#define OP_BSTORE 0x0e
184#define OP_VFLUSH 0x0f
185
186
187/* Extended opcodes values (exopc field) */
188
189/* GAMIR - AMOs with implicit operands */
190#define EOP_IR_FETCH 0x01 /* Plain fetch of memory */
191#define EOP_IR_CLR 0x02 /* Fetch and clear */
192#define EOP_IR_INC 0x05 /* Fetch and increment */
193#define EOP_IR_DEC 0x07 /* Fetch and decrement */
194#define EOP_IR_QCHK1 0x0d /* Queue check, 64 byte msg */
195#define EOP_IR_QCHK2 0x0e /* Queue check, 128 byte msg */
196
197/* GAMIRR - Registered AMOs with implicit operands */
198#define EOP_IRR_FETCH 0x01 /* Registered fetch of memory */
199#define EOP_IRR_CLR 0x02 /* Registered fetch and clear */
200#define EOP_IRR_INC 0x05 /* Registered fetch and increment */
201#define EOP_IRR_DEC 0x07 /* Registered fetch and decrement */
202#define EOP_IRR_DECZ 0x0f /* Registered fetch and decrement, update on zero*/
203
204/* GAMER - AMOs with explicit operands */
205#define EOP_ER_SWAP 0x00 /* Exchange argument and memory */
206#define EOP_ER_OR 0x01 /* Logical OR with memory */
207#define EOP_ER_AND 0x02 /* Logical AND with memory */
208#define EOP_ER_XOR 0x03 /* Logical XOR with memory */
209#define EOP_ER_ADD 0x04 /* Add value to memory */
210#define EOP_ER_CSWAP 0x08 /* Compare with operand2, write operand1 if match*/
211#define EOP_ER_CADD 0x0c /* Queue check, operand1*64 byte msg */
212
213/* GAMERR - Registered AMOs with explicit operands */
214#define EOP_ERR_SWAP 0x00 /* Exchange argument and memory */
215#define EOP_ERR_OR 0x01 /* Logical OR with memory */
216#define EOP_ERR_AND 0x02 /* Logical AND with memory */
217#define EOP_ERR_XOR 0x03 /* Logical XOR with memory */
218#define EOP_ERR_ADD 0x04 /* Add value to memory */
219#define EOP_ERR_CSWAP 0x08 /* Compare with operand2, write operand1 if match*/
220#define EOP_ERR_EPOLL 0x09 /* Poll for equality */
221#define EOP_ERR_NPOLL 0x0a /* Poll for inequality */
222
223/* GAMXR - SGI Arithmetic unit */
224#define EOP_XR_CSWAP 0x0b /* Masked compare exchange */
225
226
227/* Transfer types (xtype field) */
228#define XTYPE_B 0x0 /* byte */
229#define XTYPE_S 0x1 /* short (2-byte) */
230#define XTYPE_W 0x2 /* word (4-byte) */
231#define XTYPE_DW 0x3 /* doubleword (8-byte) */
232#define XTYPE_CL 0x6 /* cacheline (64-byte) */
233
234
235/* Instruction access attributes (iaa0, iaa1 fields) */
236#define IAA_RAM 0x0 /* normal cached RAM access */
237#define IAA_NCRAM 0x2 /* noncoherent RAM access */
238#define IAA_MMIO 0x1 /* noncoherent memory-mapped I/O space */
239#define IAA_REGISTER 0x3 /* memory-mapped registers, etc. */
240
241
242/* Instruction mode attributes (ima field) */
243#define IMA_MAPPED 0x0 /* Virtual mode */
244#define IMA_CB_DELAY 0x1 /* hold read responses until status changes */
245#define IMA_UNMAPPED 0x2 /* bypass the TLBs (OS only) */
246#define IMA_INTERRUPT 0x4 /* Interrupt when instruction completes */
247
248/* CBE ecause bits */
249#define CBE_CAUSE_RI (1 << 0)
250#define CBE_CAUSE_INVALID_INSTRUCTION (1 << 1)
251#define CBE_CAUSE_UNMAPPED_MODE_FORBIDDEN (1 << 2)
252#define CBE_CAUSE_PE_CHECK_DATA_ERROR (1 << 3)
253#define CBE_CAUSE_IAA_GAA_MISMATCH (1 << 4)
254#define CBE_CAUSE_DATA_SEGMENT_LIMIT_EXCEPTION (1 << 5)
255#define CBE_CAUSE_OS_FATAL_TLB_FAULT (1 << 6)
256#define CBE_CAUSE_EXECUTION_HW_ERROR (1 << 7)
257#define CBE_CAUSE_TLBHW_ERROR (1 << 8)
258#define CBE_CAUSE_RA_REQUEST_TIMEOUT (1 << 9)
259#define CBE_CAUSE_HA_REQUEST_TIMEOUT (1 << 10)
260#define CBE_CAUSE_RA_RESPONSE_FATAL (1 << 11)
261#define CBE_CAUSE_RA_RESPONSE_NON_FATAL (1 << 12)
262#define CBE_CAUSE_HA_RESPONSE_FATAL (1 << 13)
263#define CBE_CAUSE_HA_RESPONSE_NON_FATAL (1 << 14)
264#define CBE_CAUSE_ADDRESS_SPACE_DECODE_ERROR (1 << 15)
270952a9
JS		 265#define CBE_CAUSE_PROTOCOL_STATE_DATA_ERROR (1 << 16)
266#define CBE_CAUSE_RA_RESPONSE_DATA_ERROR (1 << 17)
267#define CBE_CAUSE_HA_RESPONSE_DATA_ERROR (1 << 18)
5658366a 268#define CBE_CAUSE_FORCED_ERROR (1 << 19)
4c921d4d 269
cd1334f0
JS		 270/* CBE cbrexecstatus bits */
271#define CBR_EXS_ABORT_OCC_BIT 0
272#define CBR_EXS_INT_OCC_BIT 1
273#define CBR_EXS_PENDING_BIT 2
274#define CBR_EXS_QUEUED_BIT 3
270952a9 275#define CBR_EXS_TLB_INVAL_BIT 4
cd1334f0 276#define CBR_EXS_EXCEPTION_BIT 5
5658366a 277#define CBR_EXS_CB_INT_PENDING_BIT 6
cd1334f0
JS		 278
279#define CBR_EXS_ABORT_OCC (1 << CBR_EXS_ABORT_OCC_BIT)
280#define CBR_EXS_INT_OCC (1 << CBR_EXS_INT_OCC_BIT)
281#define CBR_EXS_PENDING (1 << CBR_EXS_PENDING_BIT)
282#define CBR_EXS_QUEUED (1 << CBR_EXS_QUEUED_BIT)
5658366a 283#define CBR_EXS_TLB_INVAL (1 << CBR_EXS_TLB_INVAL_BIT)
cd1334f0 284#define CBR_EXS_EXCEPTION (1 << CBR_EXS_EXCEPTION_BIT)
5658366a 285#define CBR_EXS_CB_INT_PENDING (1 << CBR_EXS_CB_INT_PENDING_BIT)
cd1334f0 286
4c921d4d
JS		 287/*
288 * Exceptions are retried for the following cases. If any OTHER bits are set
289 * in ecause, the exception is not retryable.
290 */
270952a9 291#define EXCEPTION_RETRY_BITS (CBE_CAUSE_EXECUTION_HW_ERROR | \
4c921d4d 292 CBE_CAUSE_TLBHW_ERROR | \
270952a9
JS		 293 CBE_CAUSE_RA_REQUEST_TIMEOUT | \
294 CBE_CAUSE_RA_RESPONSE_NON_FATAL | \
295 CBE_CAUSE_HA_RESPONSE_NON_FATAL | \
296 CBE_CAUSE_RA_RESPONSE_DATA_ERROR | \
297 CBE_CAUSE_HA_RESPONSE_DATA_ERROR \
298 )
4c921d4d
JS		 299
300/* Message queue head structure */
301union gru_mesqhead {
302 unsigned long val;
303 struct {
304 unsigned int head;
305 unsigned int limit;
306 };
307};
308
309
310/* Generate the low word of a GRU instruction */
57ebb034
JS		 311static inline unsigned long
312__opdword(unsigned char opcode, unsigned char exopc, unsigned char xtype,
4c921d4d 313 unsigned char iaa0, unsigned char iaa1,
57ebb034 314 unsigned long idef2, unsigned char ima)
4c921d4d
JS		 315{
316 return (1 << GRU_CB_ICMD_SHFT) |
57ebb034
JS		 317 ((unsigned long)CBS_ACTIVE << GRU_ISTATUS_SHFT) |
318 (idef2<< GRU_IDEF2_SHFT) |
4c921d4d
JS		 319 (iaa0 << GRU_CB_IAA0_SHFT) |
320 (iaa1 << GRU_CB_IAA1_SHFT) |
321 (ima << GRU_CB_IMA_SHFT) |
322 (xtype << GRU_CB_XTYPE_SHFT) |
323 (opcode << GRU_CB_OPC_SHFT) |
324 (exopc << GRU_CB_EXOPC_SHFT);
325}
326
4c921d4d
JS		 327/*
328 * Architecture specific intrinsics
329 */
330static inline void gru_flush_cache(void *p)
331{
332 __flush_cache(p);
333}
334
335/*
57ebb034 336 * Store the lower 64 bits of the command including the "start" bit. Then
4c921d4d
JS		 337 * start the instruction executing.
338 */
57ebb034 339static inline void gru_start_instruction(struct gru_instruction *ins, unsigned long op64)
4c921d4d 340{
57ebb034 341 gru_ordered_store_ulong(ins, op64);
67bf04a5 342 mb();
923f7f69 343 gru_flush_cache(ins);
4c921d4d
JS		 344}
345
346
347/* Convert "hints" to IMA */
348#define CB_IMA(h) ((h) | IMA_UNMAPPED)
349
350/* Convert data segment cache line index into TRI0 / TRI1 value */
351#define GRU_DINDEX(i) ((i) * GRU_CACHE_LINE_BYTES)
352
353/* Inline functions for GRU instructions.
354 * Note:
355 * - nelem and stride are in elements
356 * - tri0/tri1 is in bytes for the beginning of the data segment.
357 */
289750d1
RH		 358static inline void gru_vload_phys(void *cb, unsigned long gpa,
359 unsigned int tri0, int iaa, unsigned long hints)
360{
361 struct gru_instruction *ins = (struct gru_instruction *)cb;
362
363 ins->baddr0 = (long)gpa | ((unsigned long)iaa << 62);
364 ins->nelem = 1;
289750d1 365 ins->op1_stride = 1;
57ebb034
JS		 366 gru_start_instruction(ins, __opdword(OP_VLOAD, 0, XTYPE_DW, iaa, 0,
367 (unsigned long)tri0, CB_IMA(hints)));
289750d1
RH		 368}
369
76148df1
JS		 370static inline void gru_vstore_phys(void *cb, unsigned long gpa,
371 unsigned int tri0, int iaa, unsigned long hints)
372{
373 struct gru_instruction *ins = (struct gru_instruction *)cb;
374
375 ins->baddr0 = (long)gpa | ((unsigned long)iaa << 62);
376 ins->nelem = 1;
377 ins->op1_stride = 1;
378 gru_start_instruction(ins, __opdword(OP_VSTORE, 0, XTYPE_DW, iaa, 0,
379 (unsigned long)tri0, CB_IMA(hints)));
380}
381
4c921d4d
JS		 382static inline void gru_vload(void *cb, unsigned long mem_addr,
383 unsigned int tri0, unsigned char xtype, unsigned long nelem,
384 unsigned long stride, unsigned long hints)
385{
386 struct gru_instruction *ins = (struct gru_instruction *)cb;
387
388 ins->baddr0 = (long)mem_addr;
389 ins->nelem = nelem;
4c921d4d 390 ins->op1_stride = stride;
57ebb034
JS		 391 gru_start_instruction(ins, __opdword(OP_VLOAD, 0, xtype, IAA_RAM, 0,
392 (unsigned long)tri0, CB_IMA(hints)));
4c921d4d
JS		 393}
394
395static inline void gru_vstore(void *cb, unsigned long mem_addr,
396 unsigned int tri0, unsigned char xtype, unsigned long nelem,
397 unsigned long stride, unsigned long hints)
398{
399 struct gru_instruction *ins = (void *)cb;
400
401 ins->baddr0 = (long)mem_addr;
402 ins->nelem = nelem;
4c921d4d 403 ins->op1_stride = stride;
57ebb034
JS		 404 gru_start_instruction(ins, __opdword(OP_VSTORE, 0, xtype, IAA_RAM, 0,
405 tri0, CB_IMA(hints)));
4c921d4d
JS		 406}
407
408static inline void gru_ivload(void *cb, unsigned long mem_addr,
409 unsigned int tri0, unsigned int tri1, unsigned char xtype,
410 unsigned long nelem, unsigned long hints)
411{
412 struct gru_instruction *ins = (void *)cb;
413
414 ins->baddr0 = (long)mem_addr;
415 ins->nelem = nelem;
4c921d4d 416 ins->tri1_bufsize = tri1;
57ebb034
JS		 417 gru_start_instruction(ins, __opdword(OP_IVLOAD, 0, xtype, IAA_RAM, 0,
418 tri0, CB_IMA(hints)));
4c921d4d
JS		 419}
420
421static inline void gru_ivstore(void *cb, unsigned long mem_addr,
422 unsigned int tri0, unsigned int tri1,
423 unsigned char xtype, unsigned long nelem, unsigned long hints)
424{
425 struct gru_instruction *ins = (void *)cb;
426
427 ins->baddr0 = (long)mem_addr;
428 ins->nelem = nelem;
4c921d4d 429 ins->tri1_bufsize = tri1;
57ebb034
JS		 430 gru_start_instruction(ins, __opdword(OP_IVSTORE, 0, xtype, IAA_RAM, 0,
431 tri0, CB_IMA(hints)));
4c921d4d
JS		 432}
433
434static inline void gru_vset(void *cb, unsigned long mem_addr,
435 unsigned long value, unsigned char xtype, unsigned long nelem,
436 unsigned long stride, unsigned long hints)
437{
438 struct gru_instruction *ins = (void *)cb;
439
440 ins->baddr0 = (long)mem_addr;
441 ins->op2_value_baddr1 = value;
442 ins->nelem = nelem;
443 ins->op1_stride = stride;
57ebb034
JS		 444 gru_start_instruction(ins, __opdword(OP_VSET, 0, xtype, IAA_RAM, 0,
445 0, CB_IMA(hints)));
4c921d4d
JS		 446}
447
448static inline void gru_ivset(void *cb, unsigned long mem_addr,
449 unsigned int tri1, unsigned long value, unsigned char xtype,
450 unsigned long nelem, unsigned long hints)
451{
452 struct gru_instruction *ins = (void *)cb;
453
454 ins->baddr0 = (long)mem_addr;
455 ins->op2_value_baddr1 = value;
456 ins->nelem = nelem;
457 ins->tri1_bufsize = tri1;
57ebb034
JS		 458 gru_start_instruction(ins, __opdword(OP_IVSET, 0, xtype, IAA_RAM, 0,
459 0, CB_IMA(hints)));
4c921d4d
JS		 460}
461
462static inline void gru_vflush(void *cb, unsigned long mem_addr,
463 unsigned long nelem, unsigned char xtype, unsigned long stride,
464 unsigned long hints)
465{
466 struct gru_instruction *ins = (void *)cb;
467
468 ins->baddr0 = (long)mem_addr;
469 ins->op1_stride = stride;
470 ins->nelem = nelem;
57ebb034
JS		 471 gru_start_instruction(ins, __opdword(OP_VFLUSH, 0, xtype, IAA_RAM, 0,
472 0, CB_IMA(hints)));
4c921d4d
JS		 473}
474
475static inline void gru_nop(void *cb, int hints)
476{
477 struct gru_instruction *ins = (void *)cb;
478
57ebb034 479 gru_start_instruction(ins, __opdword(OP_NOP, 0, 0, 0, 0, 0, CB_IMA(hints)));
4c921d4d
JS		 480}
481
482
483static inline void gru_bcopy(void *cb, const unsigned long src,
484 unsigned long dest,
485 unsigned int tri0, unsigned int xtype, unsigned long nelem,
486 unsigned int bufsize, unsigned long hints)
487{
488 struct gru_instruction *ins = (void *)cb;
489
490 ins->baddr0 = (long)src;
491 ins->op2_value_baddr1 = (long)dest;
492 ins->nelem = nelem;
4c921d4d 493 ins->tri1_bufsize = bufsize;
57ebb034
JS		 494 gru_start_instruction(ins, __opdword(OP_BCOPY, 0, xtype, IAA_RAM,
495 IAA_RAM, tri0, CB_IMA(hints)));
4c921d4d
JS		 496}
497
498static inline void gru_bstore(void *cb, const unsigned long src,
499 unsigned long dest, unsigned int tri0, unsigned int xtype,
500 unsigned long nelem, unsigned long hints)
501{
502 struct gru_instruction *ins = (void *)cb;
503
504 ins->baddr0 = (long)src;
505 ins->op2_value_baddr1 = (long)dest;
506 ins->nelem = nelem;
57ebb034
JS		 507 gru_start_instruction(ins, __opdword(OP_BSTORE, 0, xtype, 0, IAA_RAM,
508 tri0, CB_IMA(hints)));
4c921d4d
JS		 509}
510
511static inline void gru_gamir(void *cb, int exopc, unsigned long src,
512 unsigned int xtype, unsigned long hints)
513{
514 struct gru_instruction *ins = (void *)cb;
515
516 ins->baddr0 = (long)src;
57ebb034
JS		 517 gru_start_instruction(ins, __opdword(OP_GAMIR, exopc, xtype, IAA_RAM, 0,
518 0, CB_IMA(hints)));
4c921d4d
JS		 519}
520
521static inline void gru_gamirr(void *cb, int exopc, unsigned long src,
522 unsigned int xtype, unsigned long hints)
523{
524 struct gru_instruction *ins = (void *)cb;
525
526 ins->baddr0 = (long)src;
57ebb034
JS		 527 gru_start_instruction(ins, __opdword(OP_GAMIRR, exopc, xtype, IAA_RAM, 0,
528 0, CB_IMA(hints)));
4c921d4d
JS		 529}
530
531static inline void gru_gamer(void *cb, int exopc, unsigned long src,
532 unsigned int xtype,
533 unsigned long operand1, unsigned long operand2,
534 unsigned long hints)
535{
536 struct gru_instruction *ins = (void *)cb;
537
538 ins->baddr0 = (long)src;
539 ins->op1_stride = operand1;
540 ins->op2_value_baddr1 = operand2;
57ebb034
JS		 541 gru_start_instruction(ins, __opdword(OP_GAMER, exopc, xtype, IAA_RAM, 0,
542 0, CB_IMA(hints)));
4c921d4d
JS		 543}
544
545static inline void gru_gamerr(void *cb, int exopc, unsigned long src,
546 unsigned int xtype, unsigned long operand1,
547 unsigned long operand2, unsigned long hints)
548{
549 struct gru_instruction *ins = (void *)cb;
550
551 ins->baddr0 = (long)src;
552 ins->op1_stride = operand1;
553 ins->op2_value_baddr1 = operand2;
57ebb034
JS		 554 gru_start_instruction(ins, __opdword(OP_GAMERR, exopc, xtype, IAA_RAM, 0,
555 0, CB_IMA(hints)));
4c921d4d
JS		 556}
557
558static inline void gru_gamxr(void *cb, unsigned long src,
559 unsigned int tri0, unsigned long hints)
560{
561 struct gru_instruction *ins = (void *)cb;
562
563 ins->baddr0 = (long)src;
564 ins->nelem = 4;
57ebb034
JS		 565 gru_start_instruction(ins, __opdword(OP_GAMXR, EOP_XR_CSWAP, XTYPE_DW,
566 IAA_RAM, 0, 0, CB_IMA(hints)));
4c921d4d
JS		 567}
568
569static inline void gru_mesq(void *cb, unsigned long queue,
570 unsigned long tri0, unsigned long nelem,
571 unsigned long hints)
572{
573 struct gru_instruction *ins = (void *)cb;
574
575 ins->baddr0 = (long)queue;
576 ins->nelem = nelem;
57ebb034
JS		 577 gru_start_instruction(ins, __opdword(OP_MESQ, 0, XTYPE_CL, IAA_RAM, 0,
578 tri0, CB_IMA(hints)));
4c921d4d
JS		 579}
580
581static inline unsigned long gru_get_amo_value(void *cb)
582{
583 struct gru_instruction *ins = (void *)cb;
584
585 return ins->avalue;
586}
587
588static inline int gru_get_amo_value_head(void *cb)
589{
590 struct gru_instruction *ins = (void *)cb;
591
592 return ins->avalue & 0xffffffff;
593}
594
595static inline int gru_get_amo_value_limit(void *cb)
596{
597 struct gru_instruction *ins = (void *)cb;
598
599 return ins->avalue >> 32;
600}
601
602static inline union gru_mesqhead gru_mesq_head(int head, int limit)
603{
604 union gru_mesqhead mqh;
605
606 mqh.head = head;
607 mqh.limit = limit;
608 return mqh;
609}
610
611/*
612 * Get struct control_block_extended_exc_detail for CB.
613 */
614extern int gru_get_cb_exception_detail(void *cb,
615 struct control_block_extended_exc_detail *excdet);
616
617#define GRU_EXC_STR_SIZE 256
618
4c921d4d
JS		 619
620/*
621 * Control block definition for checking status
622 */
623struct gru_control_block_status {
624 unsigned int icmd :1;
fe5bb6b0
JS		 625 unsigned int ima :3;
626 unsigned int reserved0 :4;
627 unsigned int unused1 :24;
4c921d4d
JS		 628 unsigned int unused2 :24;
629 unsigned int istatus :2;
630 unsigned int isubstatus :4;
fe5bb6b0 631 unsigned int unused3 :2;
4c921d4d
JS		 632};
633
634/* Get CB status */
635static inline int gru_get_cb_status(void *cb)
636{
637 struct gru_control_block_status *cbs = (void *)cb;
638
639 return cbs->istatus;
640}
641
642/* Get CB message queue substatus */
643static inline int gru_get_cb_message_queue_substatus(void *cb)
644{
645 struct gru_control_block_status *cbs = (void *)cb;
646
647 return cbs->isubstatus & CBSS_MSG_QUEUE_MASK;
648}
649
650/* Get CB substatus */
651static inline int gru_get_cb_substatus(void *cb)
652{
653 struct gru_control_block_status *cbs = (void *)cb;
654
655 return cbs->isubstatus;
656}
657
9f250114
JS		 658/*
659 * User interface to check an instruction status. UPM and exceptions
660 * are handled automatically. However, this function does NOT wait
661 * for an active instruction to complete.
662 *
4c921d4d
JS		 663 */
664static inline int gru_check_status(void *cb)
665{
666 struct gru_control_block_status *cbs = (void *)cb;
923f7f69 667 int ret;
4c921d4d 668
923f7f69 669 ret = cbs->istatus;
9f250114 670 if (ret != CBS_ACTIVE)
4c921d4d
JS		 671 ret = gru_check_status_proc(cb);
672 return ret;
673}
674
9f250114
JS		 675/*
676 * User interface (via inline function) to wait for an instruction
677 * to complete. Completion status (IDLE or EXCEPTION is returned
678 * to the user. Exception due to hardware errors are automatically
679 * retried before returning an exception.
680 *
4c921d4d
JS		 681 */
682static inline int gru_wait(void *cb)
683{
9f250114 684 return gru_wait_proc(cb);
4c921d4d
JS		 685}
686
9f250114
JS		 687/*
688 * Wait for CB to complete. Aborts program if error. (Note: error does NOT
4c921d4d
JS		 689 * mean TLB mis - only fatal errors such as memory parity error or user
690 * bugs will cause termination.
691 */
692static inline void gru_wait_abort(void *cb)
693{
9f250114 694 gru_wait_abort_proc(cb);
4c921d4d
JS		 695}
696
57ebb034
JS		 697/*
698 * Get a pointer to the start of a gseg
699 * p - Any valid pointer within the gseg
700 */
701static inline void *gru_get_gseg_pointer (void *p)
702{
703 return (void *)((unsigned long)p & ~(GRU_GSEG_PAGESIZE - 1));
704}
4c921d4d
JS		 705
706/*
707 * Get a pointer to a control block
708 * gseg - GSeg address returned from gru_get_thread_gru_segment()
709 * index - index of desired CB
710 */
711static inline void *gru_get_cb_pointer(void *gseg,
712 int index)
713{
714 return gseg + GRU_CB_BASE + index * GRU_HANDLE_STRIDE;
715}
716
717/*
718 * Get a pointer to a cacheline in the data segment portion of a GSeg
719 * gseg - GSeg address returned from gru_get_thread_gru_segment()
720 * index - index of desired cache line
721 */
722static inline void *gru_get_data_pointer(void *gseg, int index)
723{
724 return gseg + GRU_DS_BASE + index * GRU_CACHE_LINE_BYTES;
725}
726
727/*
728 * Convert a vaddr into the tri index within the GSEG
729 * vaddr - virtual address of within gseg
730 */
731static inline int gru_get_tri(void *vaddr)
732{
733 return ((unsigned long)vaddr & (GRU_GSEG_PAGESIZE - 1)) - GRU_DS_BASE;
734}
735#endif /* __GRU_INSTRUCTIONS_H__ */
Linux kernel - Deliverables
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