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 *) CONFIG_SYS_IMMR;
 148         volatile memctl8xx_t *memctl = &immr->im_memctl;
 149         volatile spc1920_pld_t *pld = (spc1920_pld_t *) CONFIG_SYS_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 = CONFIG_SYS_MAMR;
 155         memctl->memc_or3 = CONFIG_SYS_OR3;
 156         memctl->memc_br3 = CONFIG_SYS_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 *) CONFIG_SYS_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 *) CONFIG_SYS_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 *) CONFIG_SYS_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%lx to 0x%lx\n",
 238                 (ulong)data, (ulong)(data+count));
 239
 240         for(i=0; i<count; i++) {
 241                 HPI_HPID_INC_1 = (u16) ((data[i] >> 16) & 0xffff);
 242                 HPI_HPID_INC_2 = (u16) (data[i] & 0xffff);
 243                 debugX(4, "hpi_write_inc: data1=0x%x, data2=0x%x\n",
 244                        (u16) ((data[i] >> 16) & 0xffff),
 245                        (u16) (data[i] & 0xffff));
 246         }
 247 #if 0
 248         while(data_ptr < (u16*) (data + count)) {
 249                 HPI_HPID_INC_1 = *(data_ptr++);
 250                 HPI_HPID_INC_2 = *(data_ptr++);
 251         }
 252 #endif
 253
 254         /* return number of bytes written */
 255         return count;
 256 }
 257
 258 /*
 259  * read using autoinc (count is number of 32bit words)
 260  */
 261 static int hpi_read_inc(u32 addr, u32 *buf, u32 count)
 262 {
 263         int i;
 264         u16 addr1, addr2, data1, data2;
 265
 266         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 267         addr2 = (u16) (addr & 0xffff);
 268
 269         /* write address */
 270         HPI_HPIA_1 = addr1;
 271         HPI_HPIA_2 = addr2;
 272
 273         for(i=0; i<count; i++) {
 274                 data1 = HPI_HPID_INC_1;
 275                 data2 = HPI_HPID_INC_2;
 276                 debugX(4, "hpi_read_inc: data1=0x%x, data2=0x%x\n", data1, data2);
 277                 buf[i] = (((u32) data1) << 16) | (data2 & 0xffff);
 278         }
 279
 280 #if 0
 281         while(buf_ptr < (u16*) (buf + count)) {
 282                 *(buf_ptr++) = HPI_HPID_INC_1;
 283                 *(buf_ptr++) = HPI_HPID_INC_2;
 284         }
 285 #endif
 286
 287         /* return number of bytes read */
 288         return count;
 289 }
 290
 291
 292 /* write to non- auto inc regs */
 293 static int hpi_write_noinc(u32 addr, u32 data)
 294 {
 295
 296         u16 addr1, addr2, data1, data2;
 297
 298         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 299         addr2 = (u16) (addr & 0xffff);
 300
 301         /* printf("hpi_write_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
 302
 303         HPI_HPIA_1 = addr1;
 304         HPI_HPIA_2 = addr2;
 305
 306         data1 = (u16) ((data >> 16) & 0xffff);
 307         data2 = (u16) (data & 0xffff);
 308
 309         /* printf("hpi_write_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
 310
 311         HPI_HPID_NOINC_1 = data1;
 312         HPI_HPID_NOINC_2 = data2;
 313
 314         return 0;
 315 }
 316
 317 /* read from non- auto inc regs */
 318 static u32 hpi_read_noinc(u32 addr)
 319 {
 320         u16 addr1, addr2, data1, data2;
 321         u32 ret;
 322
 323         addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
 324         addr2 = (u16) (addr & 0xffff);
 325
 326         HPI_HPIA_1 = addr1;
 327         HPI_HPIA_2 = addr2;
 328
 329         /* printf("hpi_read_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
 330
 331         data1 = HPI_HPID_NOINC_1;
 332         data2 = HPI_HPID_NOINC_2;
 333
 334         /* printf("hpi_read_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
 335
 336         ret = (((u32) data1) << 16) | (data2 & 0xffff);
 337         return ret;
 338
 339 }
 340
 341 /*
 342  * Host Port Interface Tests
 343  */
 344
 345 #ifndef HPI_TEST_OSZI
 346 /* main test function */
 347 int hpi_test(void)
 348 {
 349         int err = 0;
 350         u32 i, ii, pattern, tmp;
 351
 352         pattern = HPI_TEST_PATTERN;
 353
 354         u32 test_data[HPI_TEST_CHUNKSIZE];
 355         u32 read_data[HPI_TEST_CHUNKSIZE];
 356
 357         debugX(2, "hpi_test: activating hpi...");
 358         hpi_activate();
 359         debugX(2, "OK.\n");
 360
 361 #if 0
 362         /* Dump the first 1024 bytes
 363          *
 364          */
 365         for(i=0; i<1024; i+=4) {
 366                 if(i%16==0)
 367                         printf("\n0x%08x: ", i);
 368                 printf("0x%08x ", hpi_read_noinc(i));
 369         }
 370 #endif
 371
 372         /* HPIA read-write test
 373          *
 374          */
 375         debugX(1, "hpi_test: starting HPIA read-write tests...\n");
 376         err |= hpi_write_addr_test(0xdeadc0de);
 377         err |= hpi_write_addr_test(0xbeefd00d);
 378         err |= hpi_write_addr_test(0xabcd1234);
 379         err |= hpi_write_addr_test(0xaaaaaaaa);
 380         if(err) {
 381                 debugX(1, "hpi_test: HPIA read-write tests: *** FAILED ***\n");
 382                 return -1;
 383         }
 384         debugX(1, "hpi_test: HPIA read-write tests: OK\n");
 385
 386
 387         /* read write test using nonincremental data regs
 388          *
 389          */
 390         debugX(1, "hpi_test: starting nonincremental tests...\n");
 391         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 392                 err |= hpi_read_write_test(i, pattern);
 393
 394                 /* stolen from cmd_mem.c */
 395                 if(pattern & 0x80000000) {
 396                         pattern = -pattern;     /* complement & increment */
 397                 } else {
 398                         pattern = ~pattern;
 399                 }
 400                 err |= hpi_read_write_test(i, pattern);
 401
 402                 if(err) {
 403                         debugX(1, "hpi_test: nonincremental tests *** FAILED ***\n");
 404                         return -1;
 405                 }
 406         }
 407         debugX(1, "hpi_test: nonincremental test OK\n");
 408
 409         /* read write a chunk of data using nonincremental data regs
 410          *
 411          */
 412         debugX(1, "hpi_test: starting nonincremental chunk tests...\n");
 413         pattern = HPI_TEST_PATTERN;
 414         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 415                 hpi_write_noinc(i, pattern);
 416
 417                 /* stolen from cmd_mem.c */
 418                 if(pattern & 0x80000000) {
 419                         pattern = -pattern;     /* complement & increment */
 420                 } else {
 421                         pattern = ~pattern;
 422                 }
 423         }
 424         pattern = HPI_TEST_PATTERN;
 425         for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
 426                 tmp = hpi_read_noinc(i);
 427
 428                 if(tmp != pattern) {
 429                         debugX(1, "hpi_test: noninc chunk test *** FAILED *** @ 0x%x, written=0x%x, read=0x%x\n", i, pattern, tmp);
 430                         err = -1;
 431                 }
 432                 /* stolen from cmd_mem.c */
 433                 if(pattern & 0x80000000) {
 434                         pattern = -pattern;     /* complement & increment */
 435                 } else {
 436                         pattern = ~pattern;
 437                 }
 438         }
 439         if(err)
 440                 return -1;
 441         debugX(1, "hpi_test: nonincremental chunk test OK\n");
 442
 443
 444 #ifdef DO_TINY_TEST
 445         /* small verbose test using autoinc and nonautoinc to compare
 446          *
 447          */
 448         debugX(1, "hpi_test: tiny_autoinc_test...\n");
 449         hpi_tiny_autoinc_test();
 450         debugX(1, "hpi_test: tiny_autoinc_test done\n");
 451 #endif /* DO_TINY_TEST */
 452
 453
 454         /* $%& write a chunk of data using the autoincremental regs
 455          *
 456          */
 457         debugX(1, "hpi_test: starting autoinc test %d chunks with 0x%x bytes...\n",
 458                ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE),
 459                HPI_TEST_CHUNKSIZE);
 460
 461         for(i=HPI_TEST_START;
 462             i < ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE);
 463             i++) {
 464                 /* generate the pattern data */
 465                 debugX(3, "generating pattern data: ");
 466                 for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
 467                         debugX(3, "0x%x ", pattern);
 468
 469                         test_data[ii] = pattern;
 470                         read_data[ii] = 0x0; /* zero to be sure */
 471
 472                         /* stolen from cmd_mem.c */
 473                         if(pattern & 0x80000000) {
 474                                 pattern = -pattern;     /* complement & increment */
 475                         } else {
 476                                 pattern = ~pattern;
 477                         }
 478                 }
 479                 debugX(3, "done\n");
 480
 481                 debugX(2, "Writing autoinc data @ 0x%x\n", i);
 482                 hpi_write_inc(i, test_data, HPI_TEST_CHUNKSIZE);
 483
 484                 debugX(2, "Reading autoinc data @ 0x%x\n", i);
 485                 hpi_read_inc(i, read_data, HPI_TEST_CHUNKSIZE);
 486
 487                 /* compare */
 488                 for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
 489                         debugX(3, "hpi_test_autoinc: @ 0x%x, written=0x%x, read=0x%x", i+ii, test_data[ii], read_data[ii]);
 490                         if(read_data[ii] != test_data[ii]) {
 491                                 debugX(0, "hpi_test: autoinc test @ 0x%x, written=0x%x, read=0x%x *** FAILED ***\n", i+ii, test_data[ii], read_data[ii]);
 492                                 return -1;
 493                         }
 494                 }
 495         }
 496         debugX(1, "hpi_test: autoinc test OK\n");
 497
 498         return 0;
 499 }
 500 #else /* HPI_TEST_OSZI */
 501 int hpi_test(void)
 502 {
 503         int i;
 504         u32 read_data[TINY_AUTOINC_DATA_SIZE];
 505
 506         unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
 507                 0x11112222, 0x33334444, 0x55556666, 0x77778888,
 508                 0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
 509                 0x00010002, 0x00030004, 0x00050006, 0x00070008,
 510                 0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
 511         };
 512
 513         debugX(0, "hpi_test: activating hpi...");
 514         hpi_activate();
 515         debugX(0, "OK.\n");
 516
 517         while(1) {
 518                 led9(1);
 519                 debugX(0, " writing to autoinc...\n");
 520                 hpi_write_inc(TINY_AUTOINC_BASE_ADDR,
 521                               dummy_data, TINY_AUTOINC_DATA_SIZE);
 522
 523                 debugX(0, " reading from autoinc...\n");
 524                 hpi_read_inc(TINY_AUTOINC_BASE_ADDR,
 525                              read_data, TINY_AUTOINC_DATA_SIZE);
 526
 527                 for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
 528                         debugX(0, " written=0x%x, read(inc)=0x%x\n",
 529                                dummy_data[i], read_data[i]);
 530                 }
 531                 led9(0);
 532                 udelay(2000000);
 533         }
 534         return 0;
 535 }
 536 #endif
 537
 538 /* test if Host Port Address Register can be written correctly */
 539 static int hpi_write_addr_test(u32 addr)
 540 {
 541         u32 read_back;
 542         /* write address */
 543         HPI_HPIA_1 = ((u16) (addr >> 16)); /* First HW is most significant */
 544         HPI_HPIA_2 = ((u16) addr);
 545
 546         read_back = (((u32) HPI_HPIA_1)<<16) | ((u32) HPI_HPIA_2);
 547
 548         if(read_back == addr) {
 549                 debugX(2, " hpi_write_addr_test OK: written=0x%x, read=0x%x\n",
 550                        addr, read_back);
 551                 return 0;
 552         } else {
 553                 debugX(0, " hpi_write_addr_test *** FAILED ***: written=0x%x, read=0x%x\n",
 554                       addr, read_back);
 555                 return -1;
 556         }
 557
 558         return 0;
 559 }
 560
 561 /* test if a simple read/write sequence succeeds */
 562 static int hpi_read_write_test(u32 addr, u32 data)
 563 {
 564         u32 read_back;
 565
 566         hpi_write_noinc(addr, data);
 567         read_back = hpi_read_noinc(addr);
 568
 569         if(read_back == data) {
 570                 debugX(2, " hpi_read_write_test: OK, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
 571                 return 0;
 572         } else {
 573                 debugX(0, " hpi_read_write_test: *** FAILED ***, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
 574                 return -1;
 575         }
 576
 577         return 0;
 578 }
 579
 580 #ifdef DO_TINY_TEST
 581 static int hpi_tiny_autoinc_test(void)
 582 {
 583         int i;
 584         u32 read_data[TINY_AUTOINC_DATA_SIZE];
 585         u32 read_data_noinc[TINY_AUTOINC_DATA_SIZE];
 586
 587         unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
 588                 0x11112222, 0x33334444, 0x55556666, 0x77778888,
 589                 0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
 590                 0x00010002, 0x00030004, 0x00050006, 0x00070008,
 591                 0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
 592         };
 593
 594         printf(" writing to autoinc...\n");
 595         hpi_write_inc(TINY_AUTOINC_BASE_ADDR, dummy_data, TINY_AUTOINC_DATA_SIZE);
 596
 597         printf(" reading from autoinc...\n");
 598         hpi_read_inc(TINY_AUTOINC_BASE_ADDR, read_data, TINY_AUTOINC_DATA_SIZE);
 599
 600         printf(" reading from noinc for comparison...\n");
 601         for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++)
 602                 read_data_noinc[i] = hpi_read_noinc(TINY_AUTOINC_BASE_ADDR+i*4);
 603
 604         for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
 605                 printf(" written=0x%x, read(inc)=0x%x, read(noinc)=0x%x\n",
 606                        dummy_data[i], read_data[i], read_data_noinc[i]);
 607         }
 608         return 0;
 609 }
 610 #endif /* DO_TINY_TEST */
 611
 612 #endif /* CONFIG_SPC1920_HPI_TEST */