iCE40/yosys - clone of https://github.com/YosysHQ/yosys

about summary refs log tree commit diff stats

diff options

Diffstat (limited to 'misc')

0 files changed, 0 insertions, 0 deletions

' href='#n38'>38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507

#ifndef ASM_VHPT_H
#define ASM_VHPT_H

#define VHPT_ENABLED 1
#define VHPT_ENABLED_REGION_0_TO_6 1
#define VHPT_ENABLED_REGION_7 0


#if 0
#define	VHPT_CACHE_ENTRY_SIZE		64
#define	VHPT_CACHE_MASK			2097151
#define	VHPT_CACHE_NUM_ENTRIES		32768
#define	VHPT_NUM_ENTRIES		2097152
#define	VHPT_CACHE_ENTRY_SIZE_LOG2	6
#define	VHPT_SIZE_LOG2			26	//????
#define	VHPT_PAGE_SHIFT			26	//????
#else
//#define	VHPT_CACHE_NUM_ENTRIES		2048
//#define	VHPT_NUM_ENTRIES		131072
//#define	VHPT_CACHE_MASK			131071
//#define	VHPT_SIZE_LOG2			22	//????
#define	VHPT_CACHE_ENTRY_SIZE		64
#define	VHPT_CACHE_NUM_ENTRIES		8192
#define	VHPT_NUM_ENTRIES		524288
#define	VHPT_CACHE_MASK			524287
#define	VHPT_SIZE_LOG2			24	//????
#define	VHPT_PAGE_SHIFT			24	//????
#endif

// FIXME: These should be automatically generated

#define	VLE_PGFLAGS_OFFSET		0
#define	VLE_ITIR_OFFSET			8
#define	VLE_TITAG_OFFSET		16
#define	VLE_CCHAIN_OFFSET		24

#define	VCE_TITAG_OFFSET		0
#define	VCE_CCNEXT_OFFSET		8
#define	VCE_CCPREV_OFFSET		16
#define	VCE_PGFLAGS_OFFSET		24
#define	VCE_ITIR_OFFSET			32
#define	VCE_FNEXT_OFFSET		32
#define	VCE_CCHEAD_OFFSET		40
#define	VCE_VADDR_OFFSET		48

//FIXME: change and declare elsewhere
#define	CAUSE_VHPT_CC_HANDLED		0

#ifndef __ASSEMBLY__

//
// VHPT collison chain entry (part of the "V-Cache")
// DO NOT CHANGE THE SIZE OF THIS STRUCTURE (see vhpt.S banked regs calculations)
//
typedef struct vcache_entry {
    union {
        struct {
            unsigned long tag  : 63; // 0-62
            unsigned long ti   :  1; // 63
        };
        unsigned long ti_tag;
    };

    struct vcache_entry *CCNext;    // collision chain next
    struct vcache_entry *CCPrev;    // collision chain previous

    union {
        struct {
            unsigned long p    :  1; // 0
            unsigned long      :  1; // 1
            unsigned long ma   :  3; // 2-4
            unsigned long a    :  1; // 5
            unsigned long d    :  1; // 6
            unsigned long pl   :  2; // 7-8
            unsigned long ar   :  3; // 9-11
            unsigned long ppn  : 38; // 12-49
            unsigned long      :  2; // 50-51
            unsigned long ed   :  1; // 52

            unsigned long translation_type :  2; // 53-54 -- hack
            unsigned long Counter :  9; // 55-63
        };
        unsigned long page_flags;
    };

    union {
        struct {
            unsigned long      :  2; // 0-1
            unsigned long ps   :  6; // 2-7
            unsigned long key  : 24; // 8-31
            unsigned long      : 32; // 32-63
        };
        unsigned long itir;

        //
        // the free list pointer when entry not in use
        //
        struct vcache_entry *FNext;    // free list
    };

    //
    // store head of collison chain for removal since thash will only work if
    // current RID is same as when element was added to chain.
    //
    struct vhpt_lf_entry *CCHead;

    unsigned long virtual_address;

    unsigned int CChainCnt;
    unsigned int Signature;
};


//
// VHPT Long Format Entry (as recognized by hw)
//
struct vhpt_lf_entry {
    unsigned long page_flags;
    unsigned long itir;
    unsigned long ti_tag;
    struct vcache_entry *CChain;
};

#define INVALID_TI_TAG 0x8000000000000000L

#endif /* !__ASSEMBLY */

#if !VHPT_ENABLED
#define VHPT_CCHAIN_LOOKUP(Name, i_or_d)
#else
#ifdef CONFIG_SMP
#error "VHPT_CCHAIN_LOOKUP needs a semaphore on the VHPT!"
#endif

// VHPT_CCHAIN_LOOKUP is intended to run with psr.i+ic off
#define VHPT_CCHAIN_LOOKUP(Name, i_or_d) 			\
								\
CC_##Name:;							\
	mov r31 = pr;						\
	mov r16 = cr.ifa;					\
	movl r30 = int_counts;					\
	;;							\
	extr.u r17=r16,59,5					\
	;;							\
	cmp.eq p6,p0=0x1e,r17;					\
(p6)	br.cond.spnt	.Alt_##Name				\
	;;							\
	cmp.eq p6,p0=0x1d,r17;					\
(p6)	br.cond.spnt	.Alt_##Name				\
	;;							\
	thash r28 = r16;					\
	adds  r30 = CAUSE_VHPT_CC_HANDLED << 3, r30;		\
	;;							\
	ttag r19 = r16;						\
ld8 r27 = [r30];					\
adds r17 = VLE_CCHAIN_OFFSET, r28;			\
	;;							\
	ld8 r17 = [r17];					\
	;;							\
	cmp.eq p6,p0 = 0, r17;					\
	mov r21 = r17;						\
	adds r22 = VCE_CCNEXT_OFFSET, r17;			\
	adds r28 = VLE_ITIR_OFFSET, r28;			\
(p6)	br .Out_##Name;						\
	;;							\
								\
.loop_##Name:;							\
	ld8 r20 = [r21];					\
	ld8 r18 = [r22];					\
	adds r23 = VCE_PGFLAGS_OFFSET, r21;			\
	adds r24 = VCE_ITIR_OFFSET, r21;			\
	cmp.eq p6,p0 = r17, r21;				\
	cmp.eq p7,p0 = r0, r0;					\
	;;							\
	lfetch [r18];						\
	cmp.eq.andcm p6,p7 = r19, r20;				\
	mov r21 = r18;						\
	adds r22 = VCE_CCNEXT_OFFSET, r18;			\
(p6)	br.spnt .Out_##Name;					\
(p7)	br.sptk .loop_##Name;					\
	;;							\
								\
	ld8 r26 = [r23];					\
	ld8 r25 = [r24];					\
	adds r29 = VLE_TITAG_OFFSET - VLE_ITIR_OFFSET, r28;	\
	adds  r27 = 1, r27;					\
	;;							\
	mov cr.itir = r25;					\
	st8 [r28] = r25, VLE_PGFLAGS_OFFSET - VLE_ITIR_OFFSET;	\
	or r26 = 1, r26;					\
	st8 [r30] = r27;					\
	;;							\
	itc.i_or_d r26;						\
	;;							\
	srlz.i_or_d;						\
	;;							\
	st8 [r28] = r26;					\
	mov pr = r31, 0x1ffff;					\
	st8 [r29] = r20;					\
	rfi;							\
	;;							\
								\
.Alt_##Name:;							\
	mov pr = r31, 0x1ffff;					\
	;;							\
	br.cond.sptk late_alt_##Name				\
	;;							\
.Out_##Name:;							\
	mov pr = r31, 0x1ffff;					\
	;;							\
.End_##Name:;

//	 br.cond.sptk.few dorfi;	



#define VHPT_INSERT() \
	{.mmi;\
		thash r17 = r16;\
		or r26 = 1, r26;\
		nop 0;\
		;;\
	};\
	{.mii;\
		ttag r21 = r16;\
		adds r18 = VLE_ITIR_OFFSET, r17;\
		adds r19 = VLE_PGFLAGS_OFFSET, r17;\
		;;\
	};\
	{.mmi;\
\
		st8[r18] = r27;\
		adds r20 = VLE_TITAG_OFFSET, r17;\
		nop 0;\
		;;\
	};\
	{.mmb;\
		st8[r19] = r26;\
		st8[r20] = r21;\
		nop 0;\
		;;\
	};\
















#define VHPT_INSERT1() \
VCacheInsert:;\
		mov r18 = 1;\
		extr.u r17 = r27, 2, 6;\
		;;\
\
\
		shl r17 = r18, r17;\
		;;\
\
\
		add r30 = r16, r17;\
		;;\
\
.MainLoop:;\
		thash r18 = r16;\
		;;\
\
		ttag  r24 = r16;\
		adds r29 = VLE_CCHAIN_OFFSET, r18;\
		;;\
\
\
		ld8 r21 = [r29];\
		;;\
\
		adds r19 = VCE_CCNEXT_OFFSET, r21;\
		adds r20 = VCE_TITAG_OFFSET, r21;\
		mov r28 = r21;\
\
		cmp.eq p11, p4 = r0, r21;\
(p11)    br FindOne;\
		;;\
\
\
.find_loop:;\
\
		ld8 r17 = [r19];\
		ld8 r18 = [r20];\
		;;\
\
		adds r19 = VCE_CCNEXT_OFFSET, r17;\
		adds r20 = VCE_TITAG_OFFSET, r17;\
		cmp.eq.unc p10, p8 = r18, r24;\
\
\
\
		cmp.eq.unc p1, p2 = r17, r21;\
\
\
(p10)      br .FillVce;\
		;;\
\
\
(p8)   mov r28 = r17;\
\
		lfetch [r19];\
\
(p2)   br .find_loop;\
		;;\
\
FindOne:;\
\
\
\
		movl r22 = G_VCacheRpl;\
		;;\
\
\
		ld8 r23 = [r22];\
		;;\
\
\
		mov r28 = r23;\
\
\
		adds r17 = VCE_FNEXT_OFFSET, r23;\
\
\
		cmp.eq p14, p3 = r0, r23;\
		;;\
\
(p3)  ld8 r23 = [r17];\
		;;\
\
\
(p3)  st8 [r22] = r23;\
(p3)  br .AddChain;\
		;;\
\
\
\
\
		movl r24 = VHPT_CACHE_MASK;\
\
\
		adds r25 = 8, r22;\
		;;\
\
\
		ld8 r23 = [r25];\
		;;\
\
\
		adds r23 = VHPT_CACHE_ENTRY_SIZE, r23;\
		;;\
\
\
		and r23 = r23, r24;\
\
\
		movl r17 = VHPT_ADDR;\
		;;\
\
\
		st8 [r25] = r23;\
\
\
		add r28 = r17, r23;\
		;;\
\
\
		adds r22 = VCE_CCHEAD_OFFSET, r28;\
		;;\
\
		ld8 r17 = [r22], VLE_PGFLAGS_OFFSET - VLE_CCHAIN_OFFSET;\
\
		adds r19 = VCE_CCNEXT_OFFSET, r28;\
		adds r20 = VCE_CCPREV_OFFSET, r28;\
		;;\
\
		ld8 r20 = [r20];\
		ld8 r19 = [r19];\
\
		adds r21 = VLE_CCHAIN_OFFSET, r17;\
		;;\
\
		ld8 r18 = [r21];\
\
\
		cmp.eq.unc p9, p7 = r19, r28;\
\
\
		adds r23 = VLE_TITAG_OFFSET + 7, r17;\
\
\
		mov r17 = 0x80;\
		;;\
\
\
(p9)       st8 [r21] = r0;\
\
\
(p9)       st1 [r23] = r17;\
\
		adds r24 = VCE_CCPREV_OFFSET, r19;\
		adds r25 = VCE_CCNEXT_OFFSET, r20;\
\
\
(p7)    cmp.eq.unc p13, p6 = r18, r28;\
		;;\
\
(p7)    st8 [r24] = r20;\
(p7)    st8 [r25] = r19;\
\
		adds r17 = VCE_PGFLAGS_OFFSET, r28;\
		;;\
\
(p13)     st8 [r21] = r19;\
(p13)     ld8 r18 = [r17], VCE_ITIR_OFFSET - VCE_PGFLAGS_OFFSET;\
		;;\
(p13)     st8 [r22] = r18, VLE_ITIR_OFFSET - VLE_PGFLAGS_OFFSET;\
\
		;;\
(p13)     ld8 r18 = [r17], VCE_TITAG_OFFSET - VCE_ITIR_OFFSET;\
		;;\
\
(p13)     st8 [r22] = r18, VLE_TITAG_OFFSET - VLE_ITIR_OFFSET;\
		;;\
\
.AddChain:;\
\
\
		ld8 r24 = [r29];\
		;;\
\
\
		st8 [r29] = r28, 0 - VLE_CCHAIN_OFFSET;\
\
		adds r25 = VCE_CCNEXT_OFFSET, r28;\
		adds r19 = VCE_CCPREV_OFFSET, r28;\
		adds r20 = VCE_CCHEAD_OFFSET, r28;\
		;;\
\
\
		st8 [r20] = r29;\
\
		cmp.eq p12, p5 = r0, r24;\
\
		adds r23 = VCE_CCPREV_OFFSET, r24;\
		;;\
\
(p12)   st8 [r25] = r28;\
(p12)   st8 [r19] = r28;\
\
(p5)ld8 r21 = [r23];\
		adds r29 = VLE_CCHAIN_OFFSET, r29;\
		;;\
\
(p5)st8 [r25] = r24;\
(p5)st8 [r19] = r21;\
\
		adds r22 = VCE_CCNEXT_OFFSET, r21;\
		;;\
\
(p5)st8 [r22] = r28;\
(p5)st8 [r23] = r28;\
		;;\
\
.FillVce:;\
		ttag r24 = r16;\
\
\
		adds r29 = 0 - VLE_CCHAIN_OFFSET, r29;\
		adds r17 = VCE_PGFLAGS_OFFSET, r28;\
		movl r19 = PAGE_SIZE_OFFSET;\
		;;\
\
		st8 [r29] = r26, VLE_ITIR_OFFSET - VLE_PGFLAGS_OFFSET;\
		st8 [r17] = r26, VCE_ITIR_OFFSET - VCE_PGFLAGS_OFFSET;\
		add r16 = r16, r19;\
		;;\
\
		st8 [r29] = r27, VLE_TITAG_OFFSET - VLE_ITIR_OFFSET;\
		st8 [r17] = r27, VCE_TITAG_OFFSET - VCE_ITIR_OFFSET;\
		;;\
\
		st8 [r29] = r24;\
		st8 [r17] = r24;\
\
		cmp.lt p15, p0 = r16, r30;\
(p15)     br  .MainLoop;\
		;;\




#endif	/* VHPT_ENABLED */
#endif


context:
space:
mode: