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 #if 0
 126 static void hpi_inactivate(void);
 127 #endif
 128 static void dsp_reset(void);
 129
 130 static int hpi_write_inc(u32 addr, u32 *data, u32 count);
 131 static int hpi_read_inc(u32 addr, u32 *buf, u32 count);
 132 static int hpi_write_noinc(u32 addr, u32 data);
 133 static u32 hpi_read_noinc(u32 addr);
 134
 135 int hpi_test(void);
 136 static int hpi_write_addr_test(u32 addr);
 137 static int hpi_read_write_test(u32 addr, u32 data);
 138 #ifdef DO_TINY_TEST
 139 static int hpi_tiny_autoinc_test(void);
 140 #endif /* DO_TINY_TEST */
 141 #endif /* CONFIG_SPC1920_HPI_TEST */
 142
 143
 144 /* init the host port interface on UPMA */
 145 int hpi_init(void)
 146 {
 147         volatile immap_t *immr = (immap_t *) CFG_IMMR;
 148         volatile memctl8xx_t *memctl = &immr->im_memctl;
 149         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
 150
 151         upmconfig(UPMA, (uint *)dsp_table_slow, sizeof(dsp_table_slow)/sizeof(uint));
 152         udelay(100);
 153
 154         memctl->memc_mamr = CFG_MAMR;
 155         memctl->memc_or3 = CFG_OR3;
 156         memctl->memc_br3 = CFG_BR3;
 157
 158         /* reset dsp */
 159         dsp_reset();
 160
 161         /* activate hpi switch*/
 162         pld->dsp_hpi_on = 0x1;
 163
 164         udelay(100);
 165
 166         return 0;
 167 }
 168
 169 #ifdef CONFIG_SPC1920_HPI_TEST
 170 /* activate the Host Port interface */
 171 static int hpi_activate(void)
 172 {
 173         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
 174
 175         /* turn on hpi */
 176         pld->dsp_hpi_on = 0x1;
 177
 178         udelay(5);
 179
 180         /* turn on the power EN_DSP_POWER high*/
 181         /* currently always on TBD */
 182
 183         /* setup hpi control register */
 184         HPI_HPIC_1 = (u16) 0x0008;
 185         HPI_HPIC_2 = (u16) 0x0008;
 186
 187         udelay(100);
 188
 189         return 0;
 190 }
 191
 192 #if 0
 193 /* turn off the host port interface */
 194 static void hpi_inactivate(void)
 195 {
 196         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
 197
 198         /* deactivate hpi */
 199         pld->dsp_hpi_on = 0x0;
 200
 201         /* reset the dsp */
 202         /* pld->dsp_reset = 0x0; */
 203
 204         /* turn off the power EN_DSP_POWER# high*/
 205         /* currently always on TBD */
 206
 207 }
 208 #endif
 209
 210 /* reset the DSP */
 211 static void dsp_reset(void)
 212 {
 213         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
 214         pld->dsp_reset = 0x1;
 215         pld->dsp_hpi_on = 0x0;
 216
 217         udelay(300000);
 218
 219         pld->dsp_reset = 0x0;
 220         pld->dsp_hpi_on = 0x1;
 221 }
 222
 223
 224 /* write using autoinc (count is number of 32bit words) */
 225 static int hpi_write_inc(u32 addr, u32 *data, u32 count)
 226 {
 227         int i;
 228         u16 addr1, addr2;
 229
 230         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 231         addr2 = (u16) (addr & 0xffff);
 232
 233         /* write address */
 234         HPI_HPIA_1 = addr1;
 235         HPI_HPIA_2 = addr2;
 236
 237         debugX(4, "writing from data=0x%x to 0x%x\n", data, (data+count));
 238
 239         for(i=0; i<count; i++) {
 240                 HPI_HPID_INC_1 = (u16) ((data[i] >> 16) & 0xffff);
 241                 HPI_HPID_INC_2 = (u16) (data[i] & 0xffff);
 242                 debugX(4, "hpi_write_inc: data1=0x%x, data2=0x%x\n",
 243                        (u16) ((data[i] >> 16) & 0xffff),
 244                        (u16) (data[i] & 0xffff));
 245         }
 246 #if 0
 247         while(data_ptr < (u16*) (data + count)) {
 248                 HPI_HPID_INC_1 = *(data_ptr++);
 249                 HPI_HPID_INC_2 = *(data_ptr++);
 250         }
 251 #endif
 252
 253         /* return number of bytes written */
 254         return count;
 255 }
 256
 257 /*
 258  * read using autoinc (count is number of 32bit words)
 259  */
 260 static int hpi_read_inc(u32 addr, u32 *buf, u32 count)
 261 {
 262         int i;
 263         u16 addr1, addr2, data1, data2;
 264
 265         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 266         addr2 = (u16) (addr & 0xffff);
 267
 268         /* write address */
 269         HPI_HPIA_1 = addr1;
 270         HPI_HPIA_2 = addr2;
 271
 272         for(i=0; i<count; i++) {
 273                 data1 = HPI_HPID_INC_1;
 274                 data2 = HPI_HPID_INC_2;
 275                 debugX(4, "hpi_read_inc: data1=0x%x, data2=0x%x\n", data1, data2);
 276                 buf[i] = (((u32) data1) << 16) | (data2 & 0xffff);
 277         }
 278
 279 #if 0
 280         while(buf_ptr < (u16*) (buf + count)) {
 281                 *(buf_ptr++) = HPI_HPID_INC_1;
 282                 *(buf_ptr++) = HPI_HPID_INC_2;
 283         }
 284 #endif
 285
 286         /* return number of bytes read */
 287         return count;
 288 }
 289
 290
 291 /* write to non- auto inc regs */
 292 static int hpi_write_noinc(u32 addr, u32 data)
 293 {
 294
 295         u16 addr1, addr2, data1, data2;
 296
 297         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 298         addr2 = (u16) (addr & 0xffff);
 299
 300         /* printf("hpi_write_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
 301
 302         HPI_HPIA_1 = addr1;
 303         HPI_HPIA_2 = addr2;
 304
 305         data1 = (u16) ((data >> 16) & 0xffff);
 306         data2 = (u16) (data & 0xffff);
 307
 308         /* printf("hpi_write_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
 309
 310         HPI_HPID_NOINC_1 = data1;
 311         HPI_HPID_NOINC_2 = data2;
 312
 313         return 0;
 314 }
 315
 316 /* read from non- auto inc regs */
 317 static u32 hpi_read_noinc(u32 addr)
 318 {
 319         u16 addr1, addr2, data1, data2;
 320         u32 ret;
 321
 322         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 323         addr2 = (u16) (addr & 0xffff);
 324
 325         HPI_HPIA_1 = addr1;
 326         HPI_HPIA_2 = addr2;
 327
 328         /* printf("hpi_read_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
 329
 330         data1 = HPI_HPID_NOINC_1;
 331         data2 = HPI_HPID_NOINC_2;
 332
 333         /* printf("hpi_read_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
 334
 335         ret = (((u32) data1) << 16) | (data2 & 0xffff);
 336         return ret;
 337
 338 }
 339
 340 /*
 341  * Host Port Interface Tests
 342  */
 343
 344 #ifndef HPI_TEST_OSZI
 345 /* main test function */
 346 int hpi_test(void)
 347 {
 348         int err = 0;
 349         u32 i, ii, pattern, tmp;
 350
 351         pattern = HPI_TEST_PATTERN;
 352
 353         u32 test_data[HPI_TEST_CHUNKSIZE];
 354         u32 read_data[HPI_TEST_CHUNKSIZE];
 355
 356         debugX(2, "hpi_test: activating hpi...");
 357         hpi_activate();
 358         debugX(2, "OK.\n");
 359
 360 #if 0
 361         /* Dump the first 1024 bytes
 362          *
 363          */
 364         for(i=0; i<1024; i+=4) {
 365                 if(i%16==0)
 366                         printf("\n0x%08x: ", i);
 367                 printf("0x%08x ", hpi_read_noinc(i));
 368         }
 369 #endif
 370
 371         /* HPIA read-write test
 372          *
 373          */
 374         debugX(1, "hpi_test: starting HPIA read-write tests...\n");
 375         err |= hpi_write_addr_test(0xdeadc0de);
 376         err |= hpi_write_addr_test(0xbeefd00d);
 377         err |= hpi_write_addr_test(0xabcd1234);
 378         err |= hpi_write_addr_test(0xaaaaaaaa);
 379         if(err) {
 380                 debugX(1, "hpi_test: HPIA read-write tests: *** FAILED ***\n");
 381                 return -1;
 382         }
 383         debugX(1, "hpi_test: HPIA read-write tests: OK\n");
 384
 385
 386         /* read write test using nonincremental data regs
 387          *
 388          */
 389         debugX(1, "hpi_test: starting nonincremental tests...\n");
 390         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 391                 err |= hpi_read_write_test(i, pattern);
 392
 393                 /* stolen from cmd_mem.c */
 394                 if(pattern & 0x80000000) {
 395                         pattern = -pattern;     /* complement & increment */
 396                 } else {
 397                         pattern = ~pattern;
 398                 }
 399                 err |= hpi_read_write_test(i, pattern);
 400
 401                 if(err) {
 402                         debugX(1, "hpi_test: nonincremental tests *** FAILED ***\n");
 403                         return -1;
 404                 }
 405         }
 406         debugX(1, "hpi_test: nonincremental test OK\n");
 407
 408         /* read write a chunk of data using nonincremental data regs
 409          *
 410          */
 411         debugX(1, "hpi_test: starting nonincremental chunk tests...\n");
 412         pattern = HPI_TEST_PATTERN;
 413         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 414                 hpi_write_noinc(i, pattern);
 415
 416                 /* stolen from cmd_mem.c */
 417                 if(pattern & 0x80000000) {
 418                         pattern = -pattern;     /* complement & increment */
 419                 } else {
 420                         pattern = ~pattern;
 421                 }
 422         }
 423         pattern = HPI_TEST_PATTERN;
 424         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 425                 tmp = hpi_read_noinc(i);
 426
 427                 if(tmp != pattern) {
 428                         debugX(1, "hpi_test: noninc chunk test *** FAILED *** @ 0x%x, written=0x%x, read=0x%x\n", i, pattern, tmp);
 429                         err = -1;
 430                 }
 431                 /* stolen from cmd_mem.c */
 432                 if(pattern & 0x80000000) {
 433                         pattern = -pattern;     /* complement & increment */
 434                 } else {
 435                         pattern = ~pattern;
 436                 }
 437         }
 438         if(err)
 439                 return -1;
 440         debugX(1, "hpi_test: nonincremental chunk test OK\n");
 441
 442
 443 #ifdef DO_TINY_TEST
 444         /* small verbose test using autoinc and nonautoinc to compare
 445          *
 446          */
 447         debugX(1, "hpi_test: tiny_autoinc_test...\n");
 448         hpi_tiny_autoinc_test();
 449         debugX(1, "hpi_test: tiny_autoinc_test done\n");
 450 #endif /* DO_TINY_TEST */
 451
 452
 453         /* $%& write a chunk of data using the autoincremental regs
 454          *
 455          */
 456         debugX(1, "hpi_test: starting autoinc test %d chunks with 0x%x bytes...\n",
 457                ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE),
 458                HPI_TEST_CHUNKSIZE);
 459
 460         for(i=HPI_TEST_START;
 461             i < ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE);
 462             i++) {
 463                 /* generate the pattern data */
 464                 debugX(3, "generating pattern data: ");
 465                 for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
 466                         debugX(3, "0x%x ", pattern);
 467
 468                         test_data[ii] = pattern;
 469                         read_data[ii] = 0x0; /* zero to be sure */
 470
 471                         /* stolen from cmd_mem.c */
 472                         if(pattern & 0x80000000) {
 473                                 pattern = -pattern;     /* complement & increment */
 474                         } else {
 475                                 pattern = ~pattern;
 476                         }
 477                 }
 478                 debugX(3, "done\n");
 479
 480                 debugX(2, "Writing autoinc data @ 0x%x\n", i);
 481                 hpi_write_inc(i, test_data, HPI_TEST_CHUNKSIZE);
 482
 483                 debugX(2, "Reading autoinc data @ 0x%x\n", i);
 484                 hpi_read_inc(i, read_data, HPI_TEST_CHUNKSIZE);
 485
 486                 /* compare */
 487                 for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
 488                         debugX(3, "hpi_test_autoinc: @ 0x%x, written=0x%x, read=0x%x", i+ii, test_data[ii], read_data[ii]);
 489                         if(read_data[ii] != test_data[ii]) {
 490                                 debugX(0, "hpi_test: autoinc test @ 0x%x, written=0x%x, read=0x%x *** FAILED ***\n", i+ii, test_data[ii], read_data[ii]);
 491                                 return -1;
 492                         }
 493                 }
 494         }
 495         debugX(1, "hpi_test: autoinc test OK\n");
 496
 497         return 0;
 498 }
 499 #else /* HPI_TEST_OSZI */
 500 int hpi_test(void)
 501 {
 502         int i;
 503         u32 read_data[TINY_AUTOINC_DATA_SIZE];
 504
 505         unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
 506                 0x11112222, 0x33334444, 0x55556666, 0x77778888,
 507                 0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
 508                 0x00010002, 0x00030004, 0x00050006, 0x00070008,
 509                 0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
 510         };
 511
 512         debugX(0, "hpi_test: activating hpi...");
 513         hpi_activate();
 514         debugX(0, "OK.\n");
 515
 516         while(1) {
 517                 led9(1);
 518                 debugX(0, " writing to autoinc...\n");
 519                 hpi_write_inc(TINY_AUTOINC_BASE_ADDR,
 520                               dummy_data, TINY_AUTOINC_DATA_SIZE);
 521
 522                 debugX(0, " reading from autoinc...\n");
 523                 hpi_read_inc(TINY_AUTOINC_BASE_ADDR,
 524                              read_data, TINY_AUTOINC_DATA_SIZE);
 525
 526                 for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
 527                         debugX(0, " written=0x%x, read(inc)=0x%x\n",
 528                                dummy_data[i], read_data[i]);
 529                 }
 530                 led9(0);
 531                 udelay(2000000);
 532         }
 533         return 0;
 534 }
 535 #endif
 536
 537 /* test if Host Port Address Register can be written correctly */
 538 static int hpi_write_addr_test(u32 addr)
 539 {
 540         u32 read_back;
 541         /* write address */
 542         HPI_HPIA_1 = ((u16) (addr >> 16)); /* First HW is most significant */
 543         HPI_HPIA_2 = ((u16) addr);
 544
 545         read_back = (((u32) HPI_HPIA_1)<<16) | ((u32) HPI_HPIA_2);
 546
 547         if(read_back == addr) {
 548                 debugX(2, " hpi_write_addr_test OK: written=0x%x, read=0x%x\n",
 549                        addr, read_back);
 550                 return 0;
 551         } else {
 552                 debugX(0, " hpi_write_addr_test *** FAILED ***: written=0x%x, read=0x%x\n",
 553                       addr, read_back);
 554                 return -1;
 555         }
 556
 557         return 0;
 558 }
 559
 560 /* test if a simple read/write sequence succeeds */
 561 static int hpi_read_write_test(u32 addr, u32 data)
 562 {
 563         u32 read_back;
 564
 565         hpi_write_noinc(addr, data);
 566         read_back = hpi_read_noinc(addr);
 567
 568         if(read_back == data) {
 569                 debugX(2, " hpi_read_write_test: OK, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
 570                 return 0;
 571         } else {
 572                 debugX(0, " hpi_read_write_test: *** FAILED ***, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
 573                 return -1;
 574         }
 575
 576         return 0;
 577 }
 578
 579 #ifdef DO_TINY_TEST
 580 static int hpi_tiny_autoinc_test(void)
 581 {
 582         int i;
 583         u32 read_data[TINY_AUTOINC_DATA_SIZE];
 584         u32 read_data_noinc[TINY_AUTOINC_DATA_SIZE];
 585
 586         unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
 587                 0x11112222, 0x33334444, 0x55556666, 0x77778888,
 588                 0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
 589                 0x00010002, 0x00030004, 0x00050006, 0x00070008,
 590                 0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
 591         };
 592
 593         printf(" writing to autoinc...\n");
 594         hpi_write_inc(TINY_AUTOINC_BASE_ADDR, dummy_data, TINY_AUTOINC_DATA_SIZE);
 595
 596         printf(" reading from autoinc...\n");
 597         hpi_read_inc(TINY_AUTOINC_BASE_ADDR, read_data, TINY_AUTOINC_DATA_SIZE);
 598
 599         printf(" reading from noinc for comparison...\n");
 600         for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++)
 601                 read_data_noinc[i] = hpi_read_noinc(TINY_AUTOINC_BASE_ADDR+i*4);
 602
 603         for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
 604                 printf(" written=0x%x, read(inc)=0x%x, read(noinc)=0x%x\n",
 605                        dummy_data[i], read_data[i], read_data_noinc[i]);
 606         }
 607         return 0;
 608 }
 609 #endif /* DO_TINY_TEST */
 610
 611 #endif /* CONFIG_SPC1920_HPI_TEST */