board/spc1920/hpi.c

   1 /*
   2  * (C) Copyright 2006
   3  * Markus Klotzbuecher, DENX Software Engineering, mk@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (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,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * Host Port Interface (HPI)
  26  */
  27
  28 /* debug levels:
  29  *  0 : errors
  30  *  1 : usefull info
  31  *  2 : lots of info
  32  *  3 : noisy
  33  */
  34
  35 #define DEBUG 0
  36
  37 #include <config.h>
  38 #include <common.h>
  39 #include <mpc8xx.h>
  40
  41 #include "pld.h"
  42 #include "hpi.h"
  43
  44 #define _NOT_USED_      0xFFFFFFFF
  45
  46 /* original table:
  47  * - inserted loops to achieve long CS low and high Periods (~217ns)
  48  * - move cs high 2/4 to the right
  49  */
  50 const uint dsp_table_slow[] =
  51 {
  52         /* single read   (offset  0x00 in upm ram) */
  53         0x8fffdc04, 0x0fffdc84, 0x0fffdc84, 0x0fffdc00,
  54         0x3fffdc04, 0xffffdc84, 0xffffdc84, 0xffffdc05,
  55
  56         /* burst read    (offset 0x08 in upm ram) */
  57         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  58         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  59         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  60         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  61
  62         /* single write  (offset 0x18 in upm ram) */
  63         0x8fffd004, 0x0fffd084, 0x0fffd084, 0x3fffd000,
  64         0xffffd084, 0xffffd084, 0xffffd005, _NOT_USED_,
  65
  66         /* burst write   (offset 0x20 in upm ram) */
  67         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  68         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  69         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  70         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  71         /* refresh       (offset 0x30 in upm ram) */
  72         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  73         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  74         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  75         /* exception     (offset 0x3C in upm ram) */
  76         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  77 };
  78
  79 /* dsp hpi upm ram table
  80  * works fine for noninc access, failes on incremental.
  81  * - removed first word
  82  */
  83 const uint dsp_table_fast[] =
  84 {
  85         /* single read   (offset  0x00 in upm ram) */
  86         0x8fffdc04, 0x0fffdc04, 0x0fffdc00, 0x3fffdc04,
  87         0xffffdc05, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  88
  89         /* burst read    (offset 0x08 in upm ram) */
  90         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  91         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  92         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  93         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  94
  95         /* single write  (offset 0x18 in upm ram) */
  96         0x8fffd004, 0x0fffd004, 0x3fffd000, 0xffffd005,
  97         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  98
  99         /* burst write   (offset 0x20 in upm ram) */
 100         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 101         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 102         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 103         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 104         /* refresh       (offset 0x30 in upm ram) */
 105         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 106         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 107         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 108         /* exception     (offset 0x3C in upm ram) */
 109         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 110 };
 111
 112
 113 #ifdef CONFIG_SPC1920_HPI_TEST
 114 #undef HPI_TEST_OSZI
 115
 116 #define HPI_TEST_CHUNKSIZE      0x1000
 117 #define HPI_TEST_PATTERN        0x00000000
 118 #define HPI_TEST_START          0x0
 119 #define HPI_TEST_END            0x30000
 120
 121 #define TINY_AUTOINC_DATA_SIZE 16 /* 32bit words */
 122 #define TINY_AUTOINC_BASE_ADDR 0x0
 123
 124 static int hpi_activate(void);
 125 static void hpi_inactivate(void);
 126 static void dsp_reset(void);
 127
 128 static int hpi_write_inc(u32 addr, u32 *data, u32 count);
 129 static int hpi_read_inc(u32 addr, u32 *buf, u32 count);
 130 static int hpi_write_noinc(u32 addr, u32 data);
 131 static u32 hpi_read_noinc(u32 addr);
 132
 133 int hpi_test(void);
 134 static int hpi_write_addr_test(u32 addr);
 135 static int hpi_read_write_test(u32 addr, u32 data);
 136 static int hpi_tiny_autoinc_test(void);
 137 #endif /* CONFIG_SPC1920_HPI_TEST */
 138
 139
 140 /* init the host port interface on UPMA */
 141 int hpi_init(void)
 142 {
 143         volatile immap_t *immr = (immap_t *) CFG_IMMR;
 144         volatile memctl8xx_t *memctl = &immr->im_memctl;
 145         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
 146
 147         upmconfig(UPMA, (uint *)dsp_table_slow, sizeof(dsp_table_slow)/sizeof(uint));
 148         udelay(100);
 149
 150         memctl->memc_mamr = CFG_MAMR;
 151         memctl->memc_or3 = CFG_OR3;
 152         memctl->memc_br3 = CFG_BR3;
 153
 154         /* reset dsp */
 155         dsp_reset();
 156
 157         /* activate hpi switch*/
 158         pld->dsp_hpi_on = 0x1;
 159
 160         udelay(100);
 161
 162         return 0;
 163 }
 164
 165 #ifdef CONFIG_SPC1920_HPI_TEST
 166 /* activate the Host Port interface */
 167 static int hpi_activate(void)
 168 {
 169         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
 170
 171         /* turn on hpi */
 172         pld->dsp_hpi_on = 0x1;
 173
 174         udelay(5);
 175
 176         /* turn on the power EN_DSP_POWER high*/
 177         /* currently always on TBD */
 178
 179         /* setup hpi control register */
 180         HPI_HPIC_1 = (u16) 0x0008;
 181         HPI_HPIC_2 = (u16) 0x0008;
 182
 183         udelay(100);
 184
 185         return 0;
 186 }
 187
 188 /* turn off the host port interface */
 189 static void hpi_inactivate(void)
 190 {
 191         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
 192
 193         /* deactivate hpi */
 194         pld->dsp_hpi_on = 0x0;
 195
 196         /* reset the dsp */
 197         /* pld->dsp_reset = 0x0; */
 198
 199         /* turn off the power EN_DSP_POWER# high*/
 200         /* currently always on TBD */
 201
 202 }
 203
 204 /* reset the DSP */
 205 static void dsp_reset(void)
 206 {
 207         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
 208         pld->dsp_reset = 0x1;
 209         pld->dsp_hpi_on = 0x0;
 210
 211         udelay(300000);
 212
 213         pld->dsp_reset = 0x0;
 214         pld->dsp_hpi_on = 0x1;
 215 }
 216
 217
 218 /* write using autoinc (count is number of 32bit words) */
 219 static int hpi_write_inc(u32 addr, u32 *data, u32 count)
 220 {
 221         int i;
 222         u16 addr1, addr2;
 223
 224         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 225         addr2 = (u16) (addr & 0xffff);
 226
 227         /* write address */
 228         HPI_HPIA_1 = addr1;
 229         HPI_HPIA_2 = addr2;
 230
 231         debugX(4, "writing from data=0x%x to 0x%x\n", data, (data+count));
 232
 233         for(i=0; i<count; i++) {
 234                 HPI_HPID_INC_1 = (u16) ((data[i] >> 16) & 0xffff);
 235                 HPI_HPID_INC_2 = (u16) (data[i] & 0xffff);
 236                 debugX(4, "hpi_write_inc: data1=0x%x, data2=0x%x\n",
 237                        (u16) ((data[i] >> 16) & 0xffff),
 238                        (u16) (data[i] & 0xffff));
 239         }
 240 #if 0
 241         while(data_ptr < (u16*) (data + count)) {
 242                 HPI_HPID_INC_1 = *(data_ptr++);
 243                 HPI_HPID_INC_2 = *(data_ptr++);
 244         }
 245 #endif
 246
 247         /* return number of bytes written */
 248         return count;
 249 }
 250
 251 /*
 252  * read using autoinc (count is number of 32bit words)
 253  */
 254 static int hpi_read_inc(u32 addr, u32 *buf, u32 count)
 255 {
 256         int i;
 257         u16 addr1, addr2, data1, data2;
 258
 259         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 260         addr2 = (u16) (addr & 0xffff);
 261
 262         /* write address */
 263         HPI_HPIA_1 = addr1;
 264         HPI_HPIA_2 = addr2;
 265
 266         for(i=0; i<count; i++) {
 267                 data1 = HPI_HPID_INC_1;
 268                 data2 = HPI_HPID_INC_2;
 269                 debugX(4, "hpi_read_inc: data1=0x%x, data2=0x%x\n", data1, data2);
 270                 buf[i] = (((u32) data1) << 16) | (data2 & 0xffff);
 271         }
 272
 273 #if 0
 274         while(buf_ptr < (u16*) (buf + count)) {
 275                 *(buf_ptr++) = HPI_HPID_INC_1;
 276                 *(buf_ptr++) = HPI_HPID_INC_2;
 277         }
 278 #endif
 279
 280         /* return number of bytes read */
 281         return count;
 282 }
 283
 284
 285 /* write to non- auto inc regs */
 286 static int hpi_write_noinc(u32 addr, u32 data)
 287 {
 288
 289         u16 addr1, addr2, data1, data2;
 290
 291         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 292         addr2 = (u16) (addr & 0xffff);
 293
 294         /* printf("hpi_write_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
 295
 296         HPI_HPIA_1 = addr1;
 297         HPI_HPIA_2 = addr2;
 298
 299         data1 = (u16) ((data >> 16) & 0xffff);
 300         data2 = (u16) (data & 0xffff);
 301
 302         /* printf("hpi_write_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
 303
 304         HPI_HPID_NOINC_1 = data1;
 305         HPI_HPID_NOINC_2 = data2;
 306
 307         return 0;
 308 }
 309
 310 /* read from non- auto inc regs */
 311 static u32 hpi_read_noinc(u32 addr)
 312 {
 313         u16 addr1, addr2, data1, data2;
 314         u32 ret;
 315
 316         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 317         addr2 = (u16) (addr & 0xffff);
 318
 319         HPI_HPIA_1 = addr1;
 320         HPI_HPIA_2 = addr2;
 321
 322         /* printf("hpi_read_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
 323
 324         data1 = HPI_HPID_NOINC_1;
 325         data2 = HPI_HPID_NOINC_2;
 326
 327         /* printf("hpi_read_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
 328
 329         ret = (((u32) data1) << 16) | (data2 & 0xffff);
 330         return ret;
 331
 332 }
 333
 334 /*
 335  * Host Port Interface Tests
 336  */
 337
 338 #ifndef HPI_TEST_OSZI
 339 /* main test function */
 340 int hpi_test(void)
 341 {
 342         int err = 0;
 343         u32 i, ii, pattern, tmp;
 344
 345         pattern = HPI_TEST_PATTERN;
 346
 347         u32 test_data[HPI_TEST_CHUNKSIZE];
 348         u32 read_data[HPI_TEST_CHUNKSIZE];
 349
 350         debugX(2, "hpi_test: activating hpi...");
 351         hpi_activate();
 352         debugX(2, "OK.\n");
 353
 354 #if 0
 355         /* Dump the first 1024 bytes
 356          *
 357          */
 358         for(i=0; i<1024; i+=4) {
 359                 if(i%16==0)
 360                         printf("\n0x%08x: ", i);
 361                 printf("0x%08x ", hpi_read_noinc(i));
 362         }
 363 #endif
 364
 365         /* HPIA read-write test
 366          *
 367          */
 368         debugX(1, "hpi_test: starting HPIA read-write tests...\n");
 369         err |= hpi_write_addr_test(0xdeadc0de);
 370         err |= hpi_write_addr_test(0xbeefd00d);
 371         err |= hpi_write_addr_test(0xabcd1234);
 372         err |= hpi_write_addr_test(0xaaaaaaaa);
 373         if(err) {
 374                 debugX(1, "hpi_test: HPIA read-write tests: *** FAILED ***\n");
 375                 return -1;
 376         }
 377         debugX(1, "hpi_test: HPIA read-write tests: OK\n");
 378
 379
 380         /* read write test using nonincremental data regs
 381          *
 382          */
 383         debugX(1, "hpi_test: starting nonincremental tests...\n");
 384         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 385                 err |= hpi_read_write_test(i, pattern);
 386
 387                 /* stolen from cmd_mem.c */
 388                 if(pattern & 0x80000000) {
 389                         pattern = -pattern;     /* complement & increment */
 390                 } else {
 391                         pattern = ~pattern;
 392                 }
 393                 err |= hpi_read_write_test(i, pattern);
 394
 395                 if(err) {
 396                         debugX(1, "hpi_test: nonincremental tests *** FAILED ***\n");
 397                         return -1;
 398                 }
 399         }
 400         debugX(1, "hpi_test: nonincremental test OK\n");
 401
 402         /* read write a chunk of data using nonincremental data regs
 403          *
 404          */
 405         debugX(1, "hpi_test: starting nonincremental chunk tests...\n");
 406         pattern = HPI_TEST_PATTERN;
 407         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 408                 hpi_write_noinc(i, pattern);
 409
 410                 /* stolen from cmd_mem.c */
 411                 if(pattern & 0x80000000) {
 412                         pattern = -pattern;     /* complement & increment */
 413                 } else {
 414                         pattern = ~pattern;
 415                 }
 416         }
 417         pattern = HPI_TEST_PATTERN;
 418         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 419                 tmp = hpi_read_noinc(i);
 420
 421                 if(tmp != pattern) {
 422                         debugX(1, "hpi_test: noninc chunk test *** FAILED *** @ 0x%x, written=0x%x, read=0x%x\n", i, pattern, tmp);
 423                         err = -1;
 424                 }
 425                 /* stolen from cmd_mem.c */
 426                 if(pattern & 0x80000000) {
 427                         pattern = -pattern;     /* complement & increment */
 428                 } else {
 429                         pattern = ~pattern;
 430                 }
 431         }
 432         if(err)
 433                 return -1;
 434         debugX(1, "hpi_test: nonincremental chunk test OK\n");
 435
 436
 437 #ifdef DO_TINY_TEST
 438         /* small verbose test using autoinc and nonautoinc to compare
 439          *
 440          */
 441         debugX(1, "hpi_test: tiny_autoinc_test...\n");
 442         hpi_tiny_autoinc_test();
 443         debugX(1, "hpi_test: tiny_autoinc_test done\n");
 444 #endif /* DO_TINY_TEST */
 445
 446
 447         /* $%& write a chunk of data using the autoincremental regs
 448          *
 449          */
 450         debugX(1, "hpi_test: starting autoinc test %d chunks with 0x%x bytes...\n",
 451                ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE),
 452                HPI_TEST_CHUNKSIZE);
 453
 454         for(i=HPI_TEST_START;
 455             i < ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE);
 456             i++) {
 457                 /* generate the pattern data */
 458                 debugX(3, "generating pattern data: ");
 459                 for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
 460                         debugX(3, "0x%x ", pattern);
 461
 462                         test_data[ii] = pattern;
 463                         read_data[ii] = 0x0; /* zero to be sure */
 464
 465                         /* stolen from cmd_mem.c */
 466                         if(pattern & 0x80000000) {
 467                                 pattern = -pattern;     /* complement & increment */
 468                         } else {
 469                                 pattern = ~pattern;
 470                         }
 471                 }
 472                 debugX(3, "done\n");
 473
 474                 debugX(2, "Writing autoinc data @ 0x%x\n", i);
 475                 hpi_write_inc(i, test_data, HPI_TEST_CHUNKSIZE);
 476
 477                 debugX(2, "Reading autoinc data @ 0x%x\n", i);
 478                 hpi_read_inc(i, read_data, HPI_TEST_CHUNKSIZE);
 479
 480                 /* compare */
 481                 for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
 482                         debugX(3, "hpi_test_autoinc: @ 0x%x, written=0x%x, read=0x%x", i+ii, test_data[ii], read_data[ii]);
 483                         if(read_data[ii] != test_data[ii]) {
 484                                 debugX(0, "hpi_test: autoinc test @ 0x%x, written=0x%x, read=0x%x *** FAILED ***\n", i+ii, test_data[ii], read_data[ii]);
 485                                 return -1;
 486                         }
 487                 }
 488         }
 489         debugX(1, "hpi_test: autoinc test OK\n");
 490
 491         return 0;
 492 }
 493 #else /* HPI_TEST_OSZI */
 494 int hpi_test(void)
 495 {
 496         int i;
 497         u32 read_data[TINY_AUTOINC_DATA_SIZE];
 498
 499         unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
 500                 0x11112222, 0x33334444, 0x55556666, 0x77778888,
 501                 0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
 502                 0x00010002, 0x00030004, 0x00050006, 0x00070008,
 503                 0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
 504         };
 505
 506         debugX(0, "hpi_test: activating hpi...");
 507         hpi_activate();
 508         debugX(0, "OK.\n");
 509
 510         while(1) {
 511                 led9(1);
 512                 debugX(0, " writing to autoinc...\n");
 513                 hpi_write_inc(TINY_AUTOINC_BASE_ADDR,
 514                               dummy_data, TINY_AUTOINC_DATA_SIZE);
 515
 516                 debugX(0, " reading from autoinc...\n");
 517                 hpi_read_inc(TINY_AUTOINC_BASE_ADDR,
 518                              read_data, TINY_AUTOINC_DATA_SIZE);
 519
 520                 for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
 521                         debugX(0, " written=0x%x, read(inc)=0x%x\n",
 522                                dummy_data[i], read_data[i]);
 523                 }
 524                 led9(0);
 525                 udelay(2000000);
 526         }
 527         return 0;
 528 }
 529 #endif
 530
 531 /* test if Host Port Address Register can be written correctly */
 532 static int hpi_write_addr_test(u32 addr)
 533 {
 534         u32 read_back;
 535         /* write address */
 536         HPI_HPIA_1 = ((u16) (addr >> 16)); /* First HW is most significant */
 537         HPI_HPIA_2 = ((u16) addr);
 538
 539         read_back = (((u32) HPI_HPIA_1)<<16) | ((u32) HPI_HPIA_2);
 540
 541         if(read_back == addr) {
 542                 debugX(2, " hpi_write_addr_test OK: written=0x%x, read=0x%x\n",
 543                        addr, read_back);
 544                 return 0;
 545         } else {
 546                 debugX(0, " hpi_write_addr_test *** FAILED ***: written=0x%x, read=0x%x\n",
 547                       addr, read_back);
 548                 return -1;
 549         }
 550
 551         return 0;
 552 }
 553
 554 /* test if a simple read/write sequence succeeds */
 555 static int hpi_read_write_test(u32 addr, u32 data)
 556 {
 557         u32 read_back;
 558
 559         hpi_write_noinc(addr, data);
 560         read_back = hpi_read_noinc(addr);
 561
 562         if(read_back == data) {
 563                 debugX(2, " hpi_read_write_test: OK, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
 564                 return 0;
 565         } else {
 566                 debugX(0, " hpi_read_write_test: *** FAILED ***, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
 567                 return -1;
 568         }
 569
 570         return 0;
 571 }
 572
 573 static int hpi_tiny_autoinc_test(void)
 574 {
 575         int i;
 576         u32 read_data[TINY_AUTOINC_DATA_SIZE];
 577         u32 read_data_noinc[TINY_AUTOINC_DATA_SIZE];
 578
 579         unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
 580                 0x11112222, 0x33334444, 0x55556666, 0x77778888,
 581                 0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
 582                 0x00010002, 0x00030004, 0x00050006, 0x00070008,
 583                 0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
 584         };
 585
 586         printf(" writing to autoinc...\n");
 587         hpi_write_inc(TINY_AUTOINC_BASE_ADDR, dummy_data, TINY_AUTOINC_DATA_SIZE);
 588
 589         printf(" reading from autoinc...\n");
 590         hpi_read_inc(TINY_AUTOINC_BASE_ADDR, read_data, TINY_AUTOINC_DATA_SIZE);
 591
 592         printf(" reading from noinc for comparison...\n");
 593         for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++)
 594                 read_data_noinc[i] = hpi_read_noinc(TINY_AUTOINC_BASE_ADDR+i*4);
 595
 596         for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
 597                 printf(" written=0x%x, read(inc)=0x%x, read(noinc)=0x%x\n",
 598                        dummy_data[i], read_data[i], read_data_noinc[i]);
 599         }
 600         return 0;
 601 }
 602
 603 #endif /* CONFIG_SPC1920_HPI_TEST */