target/linux/lantiq/files-3.3/drivers/usb/ifxhcd/ifxhcd_es.c

   1 /*****************************************************************************
   2  **   FILE NAME       : ifxhcd_es.c
   3  **   PROJECT         : IFX USB sub-system V3
   4  **   MODULES         : IFX USB sub-system Host and Device driver
   5  **   SRC VERSION     : 1.0
   6  **   DATE            : 1/Jan/2009
   7  **   AUTHOR          : Chen, Howard
   8  **   DESCRIPTION     : The file contain function to enable host mode USB-IF Electrical Test function.
   9  *****************************************************************************/
  10
  11 /*!
  12  \file ifxhcd_es.c
  13  \ingroup IFXUSB_DRIVER_V3
  14  \brief The file contain function to enable host mode USB-IF Electrical Test function.
  15 */
  16
  17 #include <linux/version.h>
  18 #include "ifxusb_version.h"
  19
  20 #include <linux/kernel.h>
  21
  22 #include <linux/errno.h>
  23
  24 #include <linux/dma-mapping.h>
  25
  26 #include "ifxusb_plat.h"
  27 #include "ifxusb_regs.h"
  28 #include "ifxusb_cif.h"
  29 #include "ifxhcd.h"
  30
  31
  32 #ifdef __WITH_HS_ELECT_TST__
  33         /*
  34          * Quick and dirty hack to implement the HS Electrical Test
  35          * SINGLE_STEP_GET_DEVICE_DESCRIPTOR feature.
  36          *
  37          * This code was copied from our userspace app "hset". It sends a
  38          * Get Device Descriptor control sequence in two parts, first the
  39          * Setup packet by itself, followed some time later by the In and
  40          * Ack packets. Rather than trying to figure out how to add this
  41          * functionality to the normal driver code, we just hijack the
  42          * hardware, using these two function to drive the hardware
  43          * directly.
  44          */
  45
  46
  47         void do_setup(ifxusb_core_if_t *_core_if)
  48         {
  49
  50                 ifxusb_core_global_regs_t *global_regs    = _core_if->core_global_regs;
  51                 ifxusb_host_global_regs_t *hc_global_regs = _core_if->host_global_regs;
  52                 ifxusb_hc_regs_t          *hc_regs        = _core_if->hc_regs[0];
  53                 uint32_t                  *data_fifo      = _core_if->data_fifo[0];
  54
  55                 gint_data_t    gintsts;
  56                 hctsiz_data_t  hctsiz;
  57                 hcchar_data_t  hcchar;
  58                 haint_data_t   haint;
  59                 hcint_data_t   hcint;
  60
  61
  62                 /* Enable HAINTs */
  63                 ifxusb_wreg(&hc_global_regs->haintmsk, 0x0001);
  64
  65                 /* Enable HCINTs */
  66                 ifxusb_wreg(&hc_regs->hcintmsk, 0x04a3);
  67
  68                 /* Read GINTSTS */
  69                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
  70                 //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
  71
  72                 /* Read HAINT */
  73                 haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
  74                 //fprintf(stderr, "HAINT: %08x\n", haint.d32);
  75
  76                 /* Read HCINT */
  77                 hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
  78                 //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
  79
  80                 /* Read HCCHAR */
  81                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
  82                 //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
  83
  84                 /* Clear HCINT */
  85                 ifxusb_wreg(&hc_regs->hcint, hcint.d32);
  86
  87                 /* Clear HAINT */
  88                 ifxusb_wreg(&hc_global_regs->haint, haint.d32);
  89
  90                 /* Clear GINTSTS */
  91                 ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
  92
  93                 /* Read GINTSTS */
  94                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
  95                 //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
  96
  97                 /*
  98                  * Send Setup packet (Get Device Descriptor)
  99                  */
 100
 101                 /* Make sure channel is disabled */
 102                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 103                 if (hcchar.b.chen) {
 104                         //fprintf(stderr, "Channel already enabled 1, HCCHAR = %08x\n", hcchar.d32);
 105                         hcchar.b.chdis = 1;
 106         //              hcchar.b.chen = 1;
 107                         ifxusb_wreg(&hc_regs->hcchar, hcchar.d32);
 108                         //sleep(1);
 109                         mdelay(1000);
 110
 111                         /* Read GINTSTS */
 112                         gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 113                         //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 114
 115                         /* Read HAINT */
 116                         haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
 117                         //fprintf(stderr, "HAINT: %08x\n", haint.d32);
 118
 119                         /* Read HCINT */
 120                         hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
 121                         //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
 122
 123                         /* Read HCCHAR */
 124                         hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 125                         //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
 126
 127                         /* Clear HCINT */
 128                         ifxusb_wreg(&hc_regs->hcint, hcint.d32);
 129
 130                         /* Clear HAINT */
 131                         ifxusb_wreg(&hc_global_regs->haint, haint.d32);
 132
 133                         /* Clear GINTSTS */
 134                         ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 135
 136                         hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 137                         //if (hcchar.b.chen) {
 138                         //      fprintf(stderr, "** Channel _still_ enabled 1, HCCHAR = %08x **\n", hcchar.d32);
 139                         //}
 140                 }
 141
 142                 /* Set HCTSIZ */
 143                 hctsiz.d32 = 0;
 144                 hctsiz.b.xfersize = 8;
 145                 hctsiz.b.pktcnt = 1;
 146                 hctsiz.b.pid = IFXUSB_HC_PID_SETUP;
 147                 ifxusb_wreg(&hc_regs->hctsiz, hctsiz.d32);
 148
 149                 /* Set HCCHAR */
 150                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 151                 hcchar.b.eptype = IFXUSB_EP_TYPE_CTRL;
 152                 hcchar.b.epdir = 0;
 153                 hcchar.b.epnum = 0;
 154                 hcchar.b.mps = 8;
 155                 hcchar.b.chen = 1;
 156                 ifxusb_wreg(&hc_regs->hcchar, hcchar.d32);
 157
 158                 /* Fill FIFO with Setup data for Get Device Descriptor */
 159                 ifxusb_wreg(data_fifo++, 0x01000680);
 160                 ifxusb_wreg(data_fifo++, 0x00080000);
 161
 162                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 163                 //fprintf(stderr, "Waiting for HCINTR intr 1, GINTSTS = %08x\n", gintsts.d32);
 164
 165                 /* Wait for host channel interrupt */
 166                 do {
 167                         gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 168                 } while (gintsts.b.hcintr == 0);
 169
 170                 //fprintf(stderr, "Got HCINTR intr 1, GINTSTS = %08x\n", gintsts.d32);
 171
 172                 /* Disable HCINTs */
 173                 ifxusb_wreg(&hc_regs->hcintmsk, 0x0000);
 174
 175                 /* Disable HAINTs */
 176                 ifxusb_wreg(&hc_global_regs->haintmsk, 0x0000);
 177
 178                 /* Read HAINT */
 179                 haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
 180                 //fprintf(stderr, "HAINT: %08x\n", haint.d32);
 181
 182                 /* Read HCINT */
 183                 hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
 184                 //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
 185
 186                 /* Read HCCHAR */
 187                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 188                 //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
 189
 190                 /* Clear HCINT */
 191                 ifxusb_wreg(&hc_regs->hcint, hcint.d32);
 192
 193                 /* Clear HAINT */
 194                 ifxusb_wreg(&hc_global_regs->haint, haint.d32);
 195
 196                 /* Clear GINTSTS */
 197                 ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 198
 199                 /* Read GINTSTS */
 200                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 201                 //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 202         }
 203
 204         void do_in_ack(ifxusb_core_if_t *_core_if)
 205         {
 206
 207                 ifxusb_core_global_regs_t *global_regs    = _core_if->core_global_regs;
 208                 ifxusb_host_global_regs_t *hc_global_regs = _core_if->host_global_regs;
 209                 ifxusb_hc_regs_t          *hc_regs        = _core_if->hc_regs[0];
 210                 uint32_t                  *data_fifo      = _core_if->data_fifo[0];
 211
 212                 gint_data_t        gintsts;
 213                 hctsiz_data_t      hctsiz;
 214                 hcchar_data_t      hcchar;
 215                 haint_data_t       haint;
 216                 hcint_data_t       hcint;
 217                 grxsts_data_t      grxsts;
 218
 219                 /* Enable HAINTs */
 220                 ifxusb_wreg(&hc_global_regs->haintmsk, 0x0001);
 221
 222                 /* Enable HCINTs */
 223                 ifxusb_wreg(&hc_regs->hcintmsk, 0x04a3);
 224
 225                 /* Read GINTSTS */
 226                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 227                 //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 228
 229                 /* Read HAINT */
 230                 haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
 231                 //fprintf(stderr, "HAINT: %08x\n", haint.d32);
 232
 233                 /* Read HCINT */
 234                 hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
 235                 //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
 236
 237                 /* Read HCCHAR */
 238                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 239                 //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
 240
 241                 /* Clear HCINT */
 242                 ifxusb_wreg(&hc_regs->hcint, hcint.d32);
 243
 244                 /* Clear HAINT */
 245                 ifxusb_wreg(&hc_global_regs->haint, haint.d32);
 246
 247                 /* Clear GINTSTS */
 248                 ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 249
 250                 /* Read GINTSTS */
 251                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 252                 //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 253
 254                 /*
 255                  * Receive Control In packet
 256                  */
 257
 258                 /* Make sure channel is disabled */
 259                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 260                 if (hcchar.b.chen) {
 261                         //fprintf(stderr, "Channel already enabled 2, HCCHAR = %08x\n", hcchar.d32);
 262                         hcchar.b.chdis = 1;
 263                         hcchar.b.chen = 1;
 264                         ifxusb_wreg(&hc_regs->hcchar, hcchar.d32);
 265                         //sleep(1);
 266                         mdelay(1000);
 267
 268                         /* Read GINTSTS */
 269                         gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 270                         //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 271
 272                         /* Read HAINT */
 273                         haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
 274                         //fprintf(stderr, "HAINT: %08x\n", haint.d32);
 275
 276                         /* Read HCINT */
 277                         hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
 278                         //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
 279
 280                         /* Read HCCHAR */
 281                         hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 282                         //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
 283
 284                         /* Clear HCINT */
 285                         ifxusb_wreg(&hc_regs->hcint, hcint.d32);
 286
 287                         /* Clear HAINT */
 288                         ifxusb_wreg(&hc_global_regs->haint, haint.d32);
 289
 290                         /* Clear GINTSTS */
 291                         ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 292
 293                         hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 294                         //if (hcchar.b.chen) {
 295                         //      fprintf(stderr, "** Channel _still_ enabled 2, HCCHAR = %08x **\n", hcchar.d32);
 296                         //}
 297                 }
 298
 299                 /* Set HCTSIZ */
 300                 hctsiz.d32 = 0;
 301                 hctsiz.b.xfersize = 8;
 302                 hctsiz.b.pktcnt = 1;
 303                 hctsiz.b.pid = IFXUSB_HC_PID_DATA1;
 304                 ifxusb_wreg(&hc_regs->hctsiz, hctsiz.d32);
 305
 306                 /* Set HCCHAR */
 307                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 308                 hcchar.b.eptype = IFXUSB_EP_TYPE_CTRL;
 309                 hcchar.b.epdir = 1;
 310                 hcchar.b.epnum = 0;
 311                 hcchar.b.mps = 8;
 312                 hcchar.b.chen = 1;
 313                 ifxusb_wreg(&hc_regs->hcchar, hcchar.d32);
 314
 315                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 316                 //fprintf(stderr, "Waiting for RXSTSQLVL intr 1, GINTSTS = %08x\n", gintsts.d32);
 317
 318                 /* Wait for receive status queue interrupt */
 319                 do {
 320                         gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 321                 } while (gintsts.b.rxstsqlvl == 0);
 322
 323                 //fprintf(stderr, "Got RXSTSQLVL intr 1, GINTSTS = %08x\n", gintsts.d32);
 324
 325                 /* Read RXSTS */
 326                 grxsts.d32 = ifxusb_rreg(&global_regs->grxstsp);
 327                 //fprintf(stderr, "GRXSTS: %08x\n", grxsts.d32);
 328
 329                 /* Clear RXSTSQLVL in GINTSTS */
 330                 gintsts.d32 = 0;
 331                 gintsts.b.rxstsqlvl = 1;
 332                 ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 333
 334                 switch (grxsts.hb.pktsts) {
 335                         case IFXUSB_HSTS_DATA_UPDT:
 336                                 /* Read the data into the host buffer */
 337                                 if (grxsts.hb.bcnt > 0) {
 338                                         int i;
 339                                         int word_count = (grxsts.hb.bcnt + 3) / 4;
 340
 341                                         for (i = 0; i < word_count; i++) {
 342                                                 (void)ifxusb_rreg(data_fifo++);
 343                                         }
 344                                 }
 345
 346                                 //fprintf(stderr, "Received %u bytes\n", (unsigned)grxsts.hb.bcnt);
 347                                 break;
 348
 349                         default:
 350                                 //fprintf(stderr, "** Unexpected GRXSTS packet status 1 **\n");
 351                                 break;
 352                 }
 353
 354                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 355                 //fprintf(stderr, "Waiting for RXSTSQLVL intr 2, GINTSTS = %08x\n", gintsts.d32);
 356
 357                 /* Wait for receive status queue interrupt */
 358                 do {
 359                         gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 360                 } while (gintsts.b.rxstsqlvl == 0);
 361
 362                 //fprintf(stderr, "Got RXSTSQLVL intr 2, GINTSTS = %08x\n", gintsts.d32);
 363
 364                 /* Read RXSTS */
 365                 grxsts.d32 = ifxusb_rreg(&global_regs->grxstsp);
 366                 //fprintf(stderr, "GRXSTS: %08x\n", grxsts.d32);
 367
 368                 /* Clear RXSTSQLVL in GINTSTS */
 369                 gintsts.d32 = 0;
 370                 gintsts.b.rxstsqlvl = 1;
 371                 ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 372
 373                 switch (grxsts.hb.pktsts) {
 374                         case IFXUSB_HSTS_XFER_COMP:
 375                                 break;
 376
 377                         default:
 378                                 //fprintf(stderr, "** Unexpected GRXSTS packet status 2 **\n");
 379                                 break;
 380                 }
 381
 382                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 383                 //fprintf(stderr, "Waiting for HCINTR intr 2, GINTSTS = %08x\n", gintsts.d32);
 384
 385                 /* Wait for host channel interrupt */
 386                 do {
 387                         gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 388                 } while (gintsts.b.hcintr == 0);
 389
 390                 //fprintf(stderr, "Got HCINTR intr 2, GINTSTS = %08x\n", gintsts.d32);
 391
 392                 /* Read HAINT */
 393                 haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
 394                 //fprintf(stderr, "HAINT: %08x\n", haint.d32);
 395
 396                 /* Read HCINT */
 397                 hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
 398                 //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
 399
 400                 /* Read HCCHAR */
 401                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 402                 //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
 403
 404                 /* Clear HCINT */
 405                 ifxusb_wreg(&hc_regs->hcint, hcint.d32);
 406
 407                 /* Clear HAINT */
 408                 ifxusb_wreg(&hc_global_regs->haint, haint.d32);
 409
 410                 /* Clear GINTSTS */
 411                 ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 412
 413                 /* Read GINTSTS */
 414                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 415                 //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 416
 417         //      usleep(100000);
 418         //      mdelay(100);
 419                 mdelay(1);
 420
 421                 /*
 422                  * Send handshake packet
 423                  */
 424
 425                 /* Read HAINT */
 426                 haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
 427                 //fprintf(stderr, "HAINT: %08x\n", haint.d32);
 428
 429                 /* Read HCINT */
 430                 hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
 431                 //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
 432
 433                 /* Read HCCHAR */
 434                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 435                 //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
 436
 437                 /* Clear HCINT */
 438                 ifxusb_wreg(&hc_regs->hcint, hcint.d32);
 439
 440                 /* Clear HAINT */
 441                 ifxusb_wreg(&hc_global_regs->haint, haint.d32);
 442
 443                 /* Clear GINTSTS */
 444                 ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 445
 446                 /* Read GINTSTS */
 447                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 448                 //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 449
 450                 /* Make sure channel is disabled */
 451                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 452                 if (hcchar.b.chen) {
 453                         //fprintf(stderr, "Channel already enabled 3, HCCHAR = %08x\n", hcchar.d32);
 454                         hcchar.b.chdis = 1;
 455                         hcchar.b.chen = 1;
 456                         ifxusb_wreg(&hc_regs->hcchar, hcchar.d32);
 457                         //sleep(1);
 458                         mdelay(1000);
 459
 460                         /* Read GINTSTS */
 461                         gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 462                         //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 463
 464                         /* Read HAINT */
 465                         haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
 466                         //fprintf(stderr, "HAINT: %08x\n", haint.d32);
 467
 468                         /* Read HCINT */
 469                         hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
 470                         //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
 471
 472                         /* Read HCCHAR */
 473                         hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 474                         //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
 475
 476                         /* Clear HCINT */
 477                         ifxusb_wreg(&hc_regs->hcint, hcint.d32);
 478
 479                         /* Clear HAINT */
 480                         ifxusb_wreg(&hc_global_regs->haint, haint.d32);
 481
 482                         /* Clear GINTSTS */
 483                         ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 484
 485                         hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 486                         //if (hcchar.b.chen) {
 487                         //      fprintf(stderr, "** Channel _still_ enabled 3, HCCHAR = %08x **\n", hcchar.d32);
 488                         //}
 489                 }
 490
 491                 /* Set HCTSIZ */
 492                 hctsiz.d32 = 0;
 493                 hctsiz.b.xfersize = 0;
 494                 hctsiz.b.pktcnt = 1;
 495                 hctsiz.b.pid = IFXUSB_HC_PID_DATA1;
 496                 ifxusb_wreg(&hc_regs->hctsiz, hctsiz.d32);
 497
 498                 /* Set HCCHAR */
 499                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 500                 hcchar.b.eptype = IFXUSB_EP_TYPE_CTRL;
 501                 hcchar.b.epdir = 0;
 502                 hcchar.b.epnum = 0;
 503                 hcchar.b.mps = 8;
 504                 hcchar.b.chen = 1;
 505                 ifxusb_wreg(&hc_regs->hcchar, hcchar.d32);
 506
 507                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 508                 //fprintf(stderr, "Waiting for HCINTR intr 3, GINTSTS = %08x\n", gintsts.d32);
 509
 510                 /* Wait for host channel interrupt */
 511                 do {
 512                         gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 513                 } while (gintsts.b.hcintr == 0);
 514
 515                 //fprintf(stderr, "Got HCINTR intr 3, GINTSTS = %08x\n", gintsts.d32);
 516
 517                 /* Disable HCINTs */
 518                 ifxusb_wreg(&hc_regs->hcintmsk, 0x0000);
 519
 520                 /* Disable HAINTs */
 521                 ifxusb_wreg(&hc_global_regs->haintmsk, 0x0000);
 522
 523                 /* Read HAINT */
 524                 haint.d32 = ifxusb_rreg(&hc_global_regs->haint);
 525                 //fprintf(stderr, "HAINT: %08x\n", haint.d32);
 526
 527                 /* Read HCINT */
 528                 hcint.d32 = ifxusb_rreg(&hc_regs->hcint);
 529                 //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
 530
 531                 /* Read HCCHAR */
 532                 hcchar.d32 = ifxusb_rreg(&hc_regs->hcchar);
 533                 //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
 534
 535                 /* Clear HCINT */
 536                 ifxusb_wreg(&hc_regs->hcint, hcint.d32);
 537
 538                 /* Clear HAINT */
 539                 ifxusb_wreg(&hc_global_regs->haint, haint.d32);
 540
 541                 /* Clear GINTSTS */
 542                 ifxusb_wreg(&global_regs->gintsts, gintsts.d32);
 543
 544                 /* Read GINTSTS */
 545                 gintsts.d32 = ifxusb_rreg(&global_regs->gintsts);
 546                 //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
 547         }
 548 #endif //__WITH_HS_ELECT_TST__
 549