drivers/usb_ohci.c

   1 /*
   2  * URB OHCI HCD (Host Controller Driver) for USB on the AT91RM9200.
   3  *
   4  * (C) Copyright 2003
   5  * Gary Jennejohn, DENX Software Engineering <gj@denx.de>
   6  *
   7  * Note: Much of this code has been derived from Linux 2.4
   8  * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
   9  * (C) Copyright 2000-2002 David Brownell
  10  *
  11  * Modified for the MP2USB by (C) Copyright 2005 Eric Benard
  12  * ebenard@eukrea.com - based on s3c24x0's driver
  13  *
  14  * See file CREDITS for list of people who contributed to this
  15  * project.
  16  *
  17  * This program is free software; you can redistribute it and/or
  18  * modify it under the terms of the GNU General Public License as
  19  * published by the Free Software Foundation; either version 2 of
  20  * the License, or (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  30  * MA 02111-1307 USA
  31  *
  32  */
  33 /*
  34  * IMPORTANT NOTES
  35  * 1 - you MUST define LITTLEENDIAN in the configuration file for the
  36  *     board or this driver will NOT work!
  37  * 2 - this driver is intended for use with USB Mass Storage Devices
  38  *     (BBB) ONLY. There is NO support for Interrupt or Isochronous pipes!
  39  * 3 - when running on a PQFP208 AT91RM9200, define CONFIG_AT91C_PQFP_UHPBUG
  40  *     to activate workaround for bug #41 or this driver will NOT work!
  41  */
  42
  43 #include <common.h>
  44 /* #include <pci.h> no PCI on the S3C24X0 */
  45
  46 #ifdef CONFIG_USB_OHCI_NEW
  47
  48 /* mk: are these really required? */
  49 #if defined(CONFIG_S3C2400)
  50 # include <s3c2400.h>
  51 #elif defined(CONFIG_S3C2410)
  52 # include <s3c2410.h>
  53 #elif defined(CONFIG_ARM920T)
  54 # include <asm/arch/hardware.h>
  55 #elif defined(CONFIG_CPU_MONAHANS)
  56 # include <asm/arch/pxa-regs.h>
  57 #elif defined(CONFIG_MPC5200)
  58 # include <mpc5xxx.h>
  59 #endif
  60
  61 #include <malloc.h>
  62 #include <usb.h>
  63 #include "usb_ohci.h"
  64
  65 #define S3C24X0_merge
  66
  67 #if defined(CONFIG_ARM920T) || \
  68     defined(CONFIG_S3C2400) || \
  69     defined(CONFIG_S3C2410) || \
  70     defined(CONFIG_440EP) || \
  71     defined(CONFIG_MPC5200)
  72 # define OHCI_USE_NPS           /* force NoPowerSwitching mode */
  73 #endif
  74
  75 #undef OHCI_VERBOSE_DEBUG       /* not always helpful */
  76 #undef DEBUG
  77 #undef SHOW_INFO
  78 #undef OHCI_FILL_TRACE
  79
  80 /* For initializing controller (mask in an HCFS mode too) */
  81 #define OHCI_CONTROL_INIT \
  82         (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
  83
  84 #define readl(a) (*((vu_long *)(a)))
  85 #define writel(a, b) (*((vu_long *)(b)) = ((vu_long)a))
  86
  87 #define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
  88
  89 #undef DEBUG
  90 #ifdef DEBUG
  91 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
  92 #else
  93 #define dbg(format, arg...) do {} while(0)
  94 #endif /* DEBUG */
  95 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
  96 #undef SHOW_INFO
  97 #ifdef SHOW_INFO
  98 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
  99 #else
 100 #define info(format, arg...) do {} while(0)
 101 #endif
 102
 103 #if defined(CONFIG_440EP) || defined(CONFIG_MPC5200)
 104 # define m16_swap(x) (x)
 105 # define m32_swap(x) (x)
 106 #else
 107 # define m16_swap(x) swap_16(x)
 108 # define m32_swap(x) swap_32(x)
 109 #endif
 110
 111 /* global ohci_t */
 112 static ohci_t gohci;
 113 /* this must be aligned to a 256 byte boundary */
 114 struct ohci_hcca ghcca[1];
 115 /* a pointer to the aligned storage */
 116 struct ohci_hcca *phcca;
 117 /* this allocates EDs for all possible endpoints */
 118 struct ohci_device ohci_dev;
 119 /* urb_priv */
 120 urb_priv_t urb_priv;
 121 /* RHSC flag */
 122 int got_rhsc;
 123 /* device which was disconnected */
 124 struct usb_device *devgone;
 125
 126 #ifdef S3C24X0_merge
 127 /* flag guarding URB transation */
 128 int urb_finished = 0;
 129 #endif
 130
 131
 132 /*-------------------------------------------------------------------------*/
 133
 134 /* AMD-756 (D2 rev) reports corrupt register contents in some cases.
 135  * The erratum (#4) description is incorrect.  AMD's workaround waits
 136  * till some bits (mostly reserved) are clear; ok for all revs.
 137  */
 138 #define OHCI_QUIRK_AMD756 0xabcd
 139 #define read_roothub(hc, register, mask) ({ \
 140         u32 temp = readl (&hc->regs->roothub.register); \
 141         if (hc->flags & OHCI_QUIRK_AMD756) \
 142                 while (temp & mask) \
 143                         temp = readl (&hc->regs->roothub.register); \
 144         temp; })
 145
 146 static u32 roothub_a (struct ohci *hc)
 147         { return read_roothub (hc, a, 0xfc0fe000); }
 148 static inline u32 roothub_b (struct ohci *hc)
 149         { return readl (&hc->regs->roothub.b); }
 150 static inline u32 roothub_status (struct ohci *hc)
 151         { return readl (&hc->regs->roothub.status); }
 152 static u32 roothub_portstatus (struct ohci *hc, int i)
 153         { return read_roothub (hc, portstatus [i], 0xffe0fce0); }
 154
 155
 156 /* forward declaration */
 157 static int hc_interrupt (void);
 158 static void
 159 td_submit_job (struct usb_device * dev, unsigned long pipe, void * buffer,
 160         int transfer_len, struct devrequest * setup, urb_priv_t * urb, int interval);
 161
 162 /*-------------------------------------------------------------------------*
 163  * URB support functions
 164  *-------------------------------------------------------------------------*/
 165
 166 /* free HCD-private data associated with this URB */
 167
 168 static void urb_free_priv (urb_priv_t * urb)
 169 {
 170         int             i;
 171         int             last;
 172         struct td       * td;
 173
 174         last = urb->length - 1;
 175         if (last >= 0) {
 176                 for (i = 0; i <= last; i++) {
 177                         td = urb->td[i];
 178                         if (td) {
 179                                 td->usb_dev = NULL;
 180                                 urb->td[i] = NULL;
 181                         }
 182                 }
 183         }
 184 }
 185
 186 /*-------------------------------------------------------------------------*/
 187
 188 #ifdef DEBUG
 189 static int sohci_get_current_frame_number (struct usb_device * dev);
 190
 191 /* debug| print the main components of an URB
 192  * small: 0) header + data packets 1) just header */
 193
 194 static void pkt_print (struct usb_device * dev, unsigned long pipe, void * buffer,
 195         int transfer_len, struct devrequest * setup, char * str, int small)
 196 {
 197         urb_priv_t * purb = &urb_priv;
 198
 199         dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
 200                         str,
 201                         sohci_get_current_frame_number (dev),
 202                         usb_pipedevice (pipe),
 203                         usb_pipeendpoint (pipe),
 204                         usb_pipeout (pipe)? 'O': 'I',
 205                         usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"):
 206                                 (usb_pipecontrol (pipe)? "CTRL": "BULK"),
 207                         purb->actual_length,
 208                         transfer_len, dev->status);
 209 #ifdef  OHCI_VERBOSE_DEBUG
 210         if (!small) {
 211                 int i, len;
 212
 213                 if (usb_pipecontrol (pipe)) {
 214                         printf (__FILE__ ": cmd(8):");
 215                         for (i = 0; i < 8 ; i++)
 216                                 printf (" %02x", ((__u8 *) setup) [i]);
 217                         printf ("\n");
 218                 }
 219                 if (transfer_len > 0 && buffer) {
 220                         printf (__FILE__ ": data(%d/%d):",
 221                                 purb->actual_length,
 222                                 transfer_len);
 223                         len = usb_pipeout (pipe)?
 224                                         transfer_len: purb->actual_length;
 225                         for (i = 0; i < 16 && i < len; i++)
 226                                 printf (" %02x", ((__u8 *) buffer) [i]);
 227                         printf ("%s\n", i < len? "...": "");
 228                 }
 229         }
 230 #endif
 231 }
 232
 233 /* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
 234 void ep_print_int_eds (ohci_t *ohci, char * str) {
 235         int i, j;
 236          __u32 * ed_p;
 237         for (i= 0; i < 32; i++) {
 238                 j = 5;
 239                 ed_p = &(ohci->hcca->int_table [i]);
 240                 if (*ed_p == 0)
 241                     continue;
 242                 printf (__FILE__ ": %s branch int %2d(%2x):", str, i, i);
 243                 while (*ed_p != 0 && j--) {
 244                         ed_t *ed = (ed_t *)m32_swap(ed_p);
 245                         printf (" ed: %4x;", ed->hwINFO);
 246                         ed_p = &ed->hwNextED;
 247                 }
 248                 printf ("\n");
 249         }
 250 }
 251
 252 static void ohci_dump_intr_mask (char *label, __u32 mask)
 253 {
 254         dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
 255                 label,
 256                 mask,
 257                 (mask & OHCI_INTR_MIE) ? " MIE" : "",
 258                 (mask & OHCI_INTR_OC) ? " OC" : "",
 259                 (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
 260                 (mask & OHCI_INTR_FNO) ? " FNO" : "",
 261                 (mask & OHCI_INTR_UE) ? " UE" : "",
 262                 (mask & OHCI_INTR_RD) ? " RD" : "",
 263                 (mask & OHCI_INTR_SF) ? " SF" : "",
 264                 (mask & OHCI_INTR_WDH) ? " WDH" : "",
 265                 (mask & OHCI_INTR_SO) ? " SO" : ""
 266                 );
 267 }
 268
 269 static void maybe_print_eds (char *label, __u32 value)
 270 {
 271         ed_t *edp = (ed_t *)value;
 272
 273         if (value) {
 274                 dbg ("%s %08x", label, value);
 275                 dbg ("%08x", edp->hwINFO);
 276                 dbg ("%08x", edp->hwTailP);
 277                 dbg ("%08x", edp->hwHeadP);
 278                 dbg ("%08x", edp->hwNextED);
 279         }
 280 }
 281
 282 static char * hcfs2string (int state)
 283 {
 284         switch (state) {
 285                 case OHCI_USB_RESET:    return "reset";
 286                 case OHCI_USB_RESUME:   return "resume";
 287                 case OHCI_USB_OPER:     return "operational";
 288                 case OHCI_USB_SUSPEND:  return "suspend";
 289         }
 290         return "?";
 291 }
 292
 293 /* dump control and status registers */
 294 static void ohci_dump_status (ohci_t *controller)
 295 {
 296         struct ohci_regs        *regs = controller->regs;
 297         __u32                   temp;
 298
 299         temp = readl (&regs->revision) & 0xff;
 300         if (temp != 0x10)
 301                 dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f));
 302
 303         temp = readl (&regs->control);
 304         dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
 305                 (temp & OHCI_CTRL_RWE) ? " RWE" : "",
 306                 (temp & OHCI_CTRL_RWC) ? " RWC" : "",
 307                 (temp & OHCI_CTRL_IR) ? " IR" : "",
 308                 hcfs2string (temp & OHCI_CTRL_HCFS),
 309                 (temp & OHCI_CTRL_BLE) ? " BLE" : "",
 310                 (temp & OHCI_CTRL_CLE) ? " CLE" : "",
 311                 (temp & OHCI_CTRL_IE) ? " IE" : "",
 312                 (temp & OHCI_CTRL_PLE) ? " PLE" : "",
 313                 temp & OHCI_CTRL_CBSR
 314                 );
 315
 316         temp = readl (&regs->cmdstatus);
 317         dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
 318                 (temp & OHCI_SOC) >> 16,
 319                 (temp & OHCI_OCR) ? " OCR" : "",
 320                 (temp & OHCI_BLF) ? " BLF" : "",
 321                 (temp & OHCI_CLF) ? " CLF" : "",
 322                 (temp & OHCI_HCR) ? " HCR" : ""
 323                 );
 324
 325         ohci_dump_intr_mask ("intrstatus", readl (&regs->intrstatus));
 326         ohci_dump_intr_mask ("intrenable", readl (&regs->intrenable));
 327
 328         maybe_print_eds ("ed_periodcurrent", readl (&regs->ed_periodcurrent));
 329
 330         maybe_print_eds ("ed_controlhead", readl (&regs->ed_controlhead));
 331         maybe_print_eds ("ed_controlcurrent", readl (&regs->ed_controlcurrent));
 332
 333         maybe_print_eds ("ed_bulkhead", readl (&regs->ed_bulkhead));
 334         maybe_print_eds ("ed_bulkcurrent", readl (&regs->ed_bulkcurrent));
 335
 336         maybe_print_eds ("donehead", readl (&regs->donehead));
 337 }
 338
 339 static void ohci_dump_roothub (ohci_t *controller, int verbose)
 340 {
 341         __u32                   temp, ndp, i;
 342
 343         temp = roothub_a (controller);
 344         ndp = (temp & RH_A_NDP);
 345 #ifdef CONFIG_AT91C_PQFP_UHPBUG
 346         ndp = (ndp == 2) ? 1:0;
 347 #endif
 348         if (verbose) {
 349                 dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
 350                         ((temp & RH_A_POTPGT) >> 24) & 0xff,
 351                         (temp & RH_A_NOCP) ? " NOCP" : "",
 352                         (temp & RH_A_OCPM) ? " OCPM" : "",
 353                         (temp & RH_A_DT) ? " DT" : "",
 354                         (temp & RH_A_NPS) ? " NPS" : "",
 355                         (temp & RH_A_PSM) ? " PSM" : "",
 356                         ndp
 357                         );
 358                 temp = roothub_b (controller);
 359                 dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
 360                         temp,
 361                         (temp & RH_B_PPCM) >> 16,
 362                         (temp & RH_B_DR)
 363                         );
 364                 temp = roothub_status (controller);
 365                 dbg ("roothub.status: %08x%s%s%s%s%s%s",
 366                         temp,
 367                         (temp & RH_HS_CRWE) ? " CRWE" : "",
 368                         (temp & RH_HS_OCIC) ? " OCIC" : "",
 369                         (temp & RH_HS_LPSC) ? " LPSC" : "",
 370                         (temp & RH_HS_DRWE) ? " DRWE" : "",
 371                         (temp & RH_HS_OCI) ? " OCI" : "",
 372                         (temp & RH_HS_LPS) ? " LPS" : ""
 373                         );
 374         }
 375
 376         for (i = 0; i < ndp; i++) {
 377                 temp = roothub_portstatus (controller, i);
 378                 dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
 379                         i,
 380                         temp,
 381                         (temp & RH_PS_PRSC) ? " PRSC" : "",
 382                         (temp & RH_PS_OCIC) ? " OCIC" : "",
 383                         (temp & RH_PS_PSSC) ? " PSSC" : "",
 384                         (temp & RH_PS_PESC) ? " PESC" : "",
 385                         (temp & RH_PS_CSC) ? " CSC" : "",
 386
 387                         (temp & RH_PS_LSDA) ? " LSDA" : "",
 388                         (temp & RH_PS_PPS) ? " PPS" : "",
 389                         (temp & RH_PS_PRS) ? " PRS" : "",
 390                         (temp & RH_PS_POCI) ? " POCI" : "",
 391                         (temp & RH_PS_PSS) ? " PSS" : "",
 392
 393                         (temp & RH_PS_PES) ? " PES" : "",
 394                         (temp & RH_PS_CCS) ? " CCS" : ""
 395                         );
 396         }
 397 }
 398
 399 static void ohci_dump (ohci_t *controller, int verbose)
 400 {
 401         dbg ("OHCI controller usb-%s state", controller->slot_name);
 402
 403         /* dumps some of the state we know about */
 404         ohci_dump_status (controller);
 405         if (verbose)
 406                 ep_print_int_eds (controller, "hcca");
 407         dbg ("hcca frame #%04x", controller->hcca->frame_no);
 408         ohci_dump_roothub (controller, 1);
 409 }
 410
 411
 412 #endif /* DEBUG */
 413
 414 /*-------------------------------------------------------------------------*
 415  * Interface functions (URB)
 416  *-------------------------------------------------------------------------*/
 417
 418 /* get a transfer request */
 419
 420 int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
 421                 int transfer_len, struct devrequest *setup, int interval)
 422 {
 423         ohci_t *ohci;
 424         ed_t * ed;
 425         urb_priv_t *purb_priv;
 426         int i, size = 0;
 427
 428         ohci = &gohci;
 429
 430         /* when controller's hung, permit only roothub cleanup attempts
 431          * such as powering down ports */
 432         if (ohci->disabled) {
 433                 err("sohci_submit_job: EPIPE");
 434                 return -1;
 435         }
 436 #ifdef S3C24X0_merge
 437         /* if we have an unfinished URB from previous transaction let's
 438          * fail and scream as quickly as possible so as not to corrupt
 439          * further communication */
 440         if (!urb_finished) {
 441                 err("sohci_submit_job: URB NOT FINISHED");
 442                 return -1;
 443         }
 444         /* we're about to begin a new transaction here so mark the URB unfinished */
 445         urb_finished = 0;
 446 #endif
 447
 448         /* every endpoint has a ed, locate and fill it */
 449         if (!(ed = ep_add_ed (dev, pipe))) {
 450                 err("sohci_submit_job: ENOMEM");
 451                 return -1;
 452         }
 453
 454         /* for the private part of the URB we need the number of TDs (size) */
 455         switch (usb_pipetype (pipe)) {
 456                 case PIPE_BULK: /* one TD for every 4096 Byte */
 457                         size = (transfer_len - 1) / 4096 + 1;
 458                         break;
 459                 case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
 460                         size = (transfer_len == 0)? 2:
 461                                                 (transfer_len - 1) / 4096 + 3;
 462                         break;
 463         }
 464
 465         if (size >= (N_URB_TD - 1)) {
 466                 err("need %d TDs, only have %d", size, N_URB_TD);
 467                 return -1;
 468         }
 469         purb_priv = &urb_priv;
 470         purb_priv->pipe = pipe;
 471
 472         /* fill the private part of the URB */
 473         purb_priv->length = size;
 474         purb_priv->ed = ed;
 475         purb_priv->actual_length = 0;
 476
 477         /* allocate the TDs */
 478         /* note that td[0] was allocated in ep_add_ed */
 479         for (i = 0; i < size; i++) {
 480                 purb_priv->td[i] = td_alloc (dev);
 481                 if (!purb_priv->td[i]) {
 482                         purb_priv->length = i;
 483                         urb_free_priv (purb_priv);
 484                         err("sohci_submit_job: ENOMEM");
 485                         return -1;
 486                 }
 487         }
 488
 489         if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
 490                 urb_free_priv (purb_priv);
 491                 err("sohci_submit_job: EINVAL");
 492                 return -1;
 493         }
 494
 495         /* link the ed into a chain if is not already */
 496         if (ed->state != ED_OPER)
 497                 ep_link (ohci, ed);
 498
 499         /* fill the TDs and link it to the ed */
 500         td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv, interval);
 501
 502         return 0;
 503 }
 504
 505 /*-------------------------------------------------------------------------*/
 506
 507 #ifdef DEBUG
 508 /* tell us the current USB frame number */
 509
 510 static int sohci_get_current_frame_number (struct usb_device *usb_dev)
 511 {
 512         ohci_t *ohci = &gohci;
 513
 514         return m16_swap (ohci->hcca->frame_no);
 515 }
 516 #endif
 517
 518 /*-------------------------------------------------------------------------*
 519  * ED handling functions
 520  *-------------------------------------------------------------------------*/
 521
 522 /* link an ed into one of the HC chains */
 523
 524 static int ep_link (ohci_t *ohci, ed_t *edi)
 525 {
 526         volatile ed_t *ed = edi;
 527
 528         ed->state = ED_OPER;
 529
 530         switch (ed->type) {
 531         case PIPE_CONTROL:
 532                 ed->hwNextED = 0;
 533                 if (ohci->ed_controltail == NULL) {
 534                         writel (ed, &ohci->regs->ed_controlhead);
 535                 } else {
 536                         ohci->ed_controltail->hwNextED = m32_swap ((unsigned long)ed);
 537                 }
 538                 ed->ed_prev = ohci->ed_controltail;
 539                 if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
 540                         !ohci->ed_rm_list[1] && !ohci->sleeping) {
 541                         ohci->hc_control |= OHCI_CTRL_CLE;
 542                         writel (ohci->hc_control, &ohci->regs->control);
 543                 }
 544                 ohci->ed_controltail = edi;
 545                 break;
 546
 547         case PIPE_BULK:
 548                 ed->hwNextED = 0;
 549                 if (ohci->ed_bulktail == NULL) {
 550                         writel (ed, &ohci->regs->ed_bulkhead);
 551                 } else {
 552                         ohci->ed_bulktail->hwNextED = m32_swap ((unsigned long)ed);
 553                 }
 554                 ed->ed_prev = ohci->ed_bulktail;
 555                 if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
 556                         !ohci->ed_rm_list[1] && !ohci->sleeping) {
 557                         ohci->hc_control |= OHCI_CTRL_BLE;
 558                         writel (ohci->hc_control, &ohci->regs->control);
 559                 }
 560                 ohci->ed_bulktail = edi;
 561                 break;
 562         }
 563         return 0;
 564 }
 565
 566 /*-------------------------------------------------------------------------*/
 567
 568 /* unlink an ed from one of the HC chains.
 569  * just the link to the ed is unlinked.
 570  * the link from the ed still points to another operational ed or 0
 571  * so the HC can eventually finish the processing of the unlinked ed */
 572
 573 static int ep_unlink (ohci_t *ohci, ed_t *edi)
 574 {
 575         volatile ed_t *ed = edi;
 576
 577         ed->hwINFO |= m32_swap (OHCI_ED_SKIP);
 578
 579         switch (ed->type) {
 580         case PIPE_CONTROL:
 581                 if (ed->ed_prev == NULL) {
 582                         if (!ed->hwNextED) {
 583                                 ohci->hc_control &= ~OHCI_CTRL_CLE;
 584                                 writel (ohci->hc_control, &ohci->regs->control);
 585                         }
 586                         writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_controlhead);
 587                 } else {
 588                         ed->ed_prev->hwNextED = ed->hwNextED;
 589                 }
 590                 if (ohci->ed_controltail == ed) {
 591                         ohci->ed_controltail = ed->ed_prev;
 592                 } else {
 593                         ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
 594                 }
 595                 break;
 596
 597         case PIPE_BULK:
 598                 if (ed->ed_prev == NULL) {
 599                         if (!ed->hwNextED) {
 600                                 ohci->hc_control &= ~OHCI_CTRL_BLE;
 601                                 writel (ohci->hc_control, &ohci->regs->control);
 602                         }
 603                         writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_bulkhead);
 604                 } else {
 605                         ed->ed_prev->hwNextED = ed->hwNextED;
 606                 }
 607                 if (ohci->ed_bulktail == ed) {
 608                         ohci->ed_bulktail = ed->ed_prev;
 609                 } else {
 610                         ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
 611                 }
 612                 break;
 613         }
 614         ed->state = ED_UNLINK;
 615         return 0;
 616 }
 617
 618
 619 /*-------------------------------------------------------------------------*/
 620
 621 /* add/reinit an endpoint; this should be done once at the
 622  * usb_set_configuration command, but the USB stack is a little bit
 623  * stateless so we do it at every transaction if the state of the ed
 624  * is ED_NEW then a dummy td is added and the state is changed to
 625  * ED_UNLINK in all other cases the state is left unchanged the ed
 626  * info fields are setted anyway even though most of them should not
 627  * change
 628  */
 629 static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe)
 630 {
 631         td_t *td;
 632         ed_t *ed_ret;
 633         volatile ed_t *ed;
 634
 635         ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint (pipe) << 1) |
 636                         (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))];
 637
 638         if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
 639                 err("ep_add_ed: pending delete");
 640                 /* pending delete request */
 641                 return NULL;
 642         }
 643
 644         if (ed->state == ED_NEW) {
 645                 ed->hwINFO = m32_swap (OHCI_ED_SKIP); /* skip ed */
 646                 /* dummy td; end of td list for ed */
 647                 td = td_alloc (usb_dev);
 648                 ed->hwTailP = m32_swap ((unsigned long)td);
 649                 ed->hwHeadP = ed->hwTailP;
 650                 ed->state = ED_UNLINK;
 651                 ed->type = usb_pipetype (pipe);
 652                 ohci_dev.ed_cnt++;
 653         }
 654
 655         ed->hwINFO = m32_swap (usb_pipedevice (pipe)
 656                         | usb_pipeendpoint (pipe) << 7
 657                         | (usb_pipeisoc (pipe)? 0x8000: 0)
 658                         | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000))
 659                         | usb_pipeslow (pipe) << 13
 660                         | usb_maxpacket (usb_dev, pipe) << 16);
 661
 662         return ed_ret;
 663 }
 664
 665 /*-------------------------------------------------------------------------*
 666  * TD handling functions
 667  *-------------------------------------------------------------------------*/
 668
 669 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
 670
 671 static void td_fill (ohci_t *ohci, unsigned int info,
 672         void *data, int len,
 673         struct usb_device *dev, int index, urb_priv_t *urb_priv)
 674 {
 675         volatile td_t  *td, *td_pt;
 676 #ifdef OHCI_FILL_TRACE
 677         int i;
 678 #endif
 679
 680         if (index > urb_priv->length) {
 681                 err("index > length");
 682                 return;
 683         }
 684         /* use this td as the next dummy */
 685         td_pt = urb_priv->td [index];
 686         td_pt->hwNextTD = 0;
 687
 688         /* fill the old dummy TD */
 689         td = urb_priv->td [index] = (td_t *)(m32_swap (urb_priv->ed->hwTailP) & ~0xf);
 690
 691         td->ed = urb_priv->ed;
 692         td->next_dl_td = NULL;
 693         td->index = index;
 694         td->data = (__u32)data;
 695 #ifdef OHCI_FILL_TRACE
 696         if ((usb_pipetype(urb_priv->pipe) == PIPE_BULK) && usb_pipeout(urb_priv->pipe)) {
 697                 for (i = 0; i < len; i++)
 698                 printf("td->data[%d] %#2x ",i, ((unsigned char *)td->data)[i]);
 699                 printf("\n");
 700         }
 701 #endif
 702         if (!len)
 703                 data = 0;
 704
 705         td->hwINFO = m32_swap (info);
 706         td->hwCBP = m32_swap ((unsigned long)data);
 707         if (data)
 708                 td->hwBE = m32_swap ((unsigned long)(data + len - 1));
 709         else
 710                 td->hwBE = 0;
 711         td->hwNextTD = m32_swap ((unsigned long)td_pt);
 712 #ifndef S3C24X0_merge
 713         td->hwPSW [0] = m16_swap (((__u32)data & 0x0FFF) | 0xE000);
 714 #endif
 715
 716         /* append to queue */
 717         td->ed->hwTailP = td->hwNextTD;
 718 }
 719
 720 /*-------------------------------------------------------------------------*/
 721
 722 /* prepare all TDs of a transfer */
 723
 724 static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer,
 725         int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval)
 726 {
 727         ohci_t *ohci = &gohci;
 728         int data_len = transfer_len;
 729         void *data;
 730         int cnt = 0;
 731         __u32 info = 0;
 732         unsigned int toggle = 0;
 733
 734         /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
 735         if(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
 736                 toggle = TD_T_TOGGLE;
 737         } else {
 738                 toggle = TD_T_DATA0;
 739                 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 1);
 740         }
 741         urb->td_cnt = 0;
 742         if (data_len)
 743                 data = buffer;
 744         else
 745                 data = 0;
 746
 747         switch (usb_pipetype (pipe)) {
 748         case PIPE_BULK:
 749                 info = usb_pipeout (pipe)?
 750                         TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
 751                 while(data_len > 4096) {
 752                         td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, dev, cnt, urb);
 753                         data += 4096; data_len -= 4096; cnt++;
 754                 }
 755                 info = usb_pipeout (pipe)?
 756                         TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
 757                 td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, dev, cnt, urb);
 758                 cnt++;
 759
 760                 if (!ohci->sleeping)
 761                         writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
 762                 break;
 763
 764         case PIPE_CONTROL:
 765                 info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
 766                 td_fill (ohci, info, setup, 8, dev, cnt++, urb);
 767                 if (data_len > 0) {
 768                         info = usb_pipeout (pipe)?
 769                                 TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
 770                         /* NOTE:  mishandles transfers >8K, some >4K */
 771                         td_fill (ohci, info, data, data_len, dev, cnt++, urb);
 772                 }
 773                 info = usb_pipeout (pipe)?
 774                         TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1;
 775                 td_fill (ohci, info, data, 0, dev, cnt++, urb);
 776                 if (!ohci->sleeping)
 777                         writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
 778                 break;
 779         }
 780         if (urb->length != cnt)
 781                 dbg("TD LENGTH %d != CNT %d", urb->length, cnt);
 782 }
 783
 784 /*-------------------------------------------------------------------------*
 785  * Done List handling functions
 786  *-------------------------------------------------------------------------*/
 787
 788
 789 /* calculate the transfer length and update the urb */
 790
 791 static void dl_transfer_length(td_t * td)
 792 {
 793         __u32 tdINFO, tdBE, tdCBP;
 794         urb_priv_t *lurb_priv = &urb_priv;
 795
 796         tdINFO = m32_swap (td->hwINFO);
 797         tdBE   = m32_swap (td->hwBE);
 798         tdCBP  = m32_swap (td->hwCBP);
 799
 800
 801         if (!(usb_pipetype (lurb_priv->pipe) == PIPE_CONTROL &&
 802             ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
 803                 if (tdBE != 0) {
 804                         if (td->hwCBP == 0)
 805                                 lurb_priv->actual_length += tdBE - td->data + 1;
 806                         else
 807                                 lurb_priv->actual_length += tdCBP - td->data;
 808                 }
 809         }
 810 }
 811
 812 /*-------------------------------------------------------------------------*/
 813
 814 /* replies to the request have to be on a FIFO basis so
 815  * we reverse the reversed done-list */
 816
 817 static td_t * dl_reverse_done_list (ohci_t *ohci)
 818 {
 819         __u32 td_list_hc;
 820         td_t *td_rev = NULL;
 821         td_t *td_list = NULL;
 822         urb_priv_t *lurb_priv = NULL;
 823
 824         td_list_hc = m32_swap (ohci->hcca->done_head) & 0xfffffff0;
 825         ohci->hcca->done_head = 0;
 826
 827         while (td_list_hc) {
 828                 td_list = (td_t *)td_list_hc;
 829
 830                 if (TD_CC_GET (m32_swap (td_list->hwINFO))) {
 831                         lurb_priv = &urb_priv;
 832                         dbg(" USB-error/status: %x : %p",
 833                                         TD_CC_GET (m32_swap (td_list->hwINFO)), td_list);
 834                         if (td_list->ed->hwHeadP & m32_swap (0x1)) {
 835                                 if (lurb_priv && ((td_list->index + 1) < lurb_priv->length)) {
 836                                         td_list->ed->hwHeadP =
 837                                                 (lurb_priv->td[lurb_priv->length - 1]->hwNextTD & m32_swap (0xfffffff0)) |
 838                                                                         (td_list->ed->hwHeadP & m32_swap (0x2));
 839                                         lurb_priv->td_cnt += lurb_priv->length - td_list->index - 1;
 840                                 } else
 841                                         td_list->ed->hwHeadP &= m32_swap (0xfffffff2);
 842                         }
 843 #ifdef CONFIG_MPC5200
 844                         td_list->hwNextTD = 0;
 845 #endif
 846                 }
 847
 848                 td_list->next_dl_td = td_rev;
 849                 td_rev = td_list;
 850                 td_list_hc = m32_swap (td_list->hwNextTD) & 0xfffffff0;
 851         }
 852         return td_list;
 853 }
 854
 855 /*-------------------------------------------------------------------------*/
 856
 857 /* td done list */
 858 static int dl_done_list (ohci_t *ohci, td_t *td_list)
 859 {
 860         td_t *td_list_next = NULL;
 861         ed_t *ed;
 862         int cc = 0;
 863         int stat = 0;
 864         /* urb_t *urb; */
 865         urb_priv_t *lurb_priv;
 866         __u32 tdINFO, edHeadP, edTailP;
 867
 868         while (td_list) {
 869                 td_list_next = td_list->next_dl_td;
 870
 871                 lurb_priv = &urb_priv;
 872                 tdINFO = m32_swap (td_list->hwINFO);
 873
 874                 ed = td_list->ed;
 875
 876                 dl_transfer_length(td_list);
 877
 878                 /* error code of transfer */
 879                 cc = TD_CC_GET (tdINFO);
 880                 if (cc != 0) {
 881                         dbg("ConditionCode %#x", cc);
 882                         stat = cc_to_error[cc];
 883                 }
 884 #ifdef S3C24X0_merge
 885                 /* see if this done list makes for all TD's of current URB,
 886                  * and mark the URB finished if so */
 887                 if (++(lurb_priv->td_cnt) == lurb_priv->length) {
 888 #if 1
 889                         if ((ed->state & (ED_OPER | ED_UNLINK)) &&
 890                             (lurb_priv->state != URB_DEL))
 891 #else
 892                         if ((ed->state & (ED_OPER | ED_UNLINK)))
 893 #endif
 894                                 urb_finished = 1;
 895                         else
 896                                 dbg("dl_done_list: strange.., ED state %x, ed->state\n");
 897                 } else
 898                         dbg("dl_done_list: processing TD %x, len %x\n", lurb_priv->td_cnt,
 899                                 lurb_priv->length);
 900 #endif
 901                 if (ed->state != ED_NEW) {
 902                         edHeadP = m32_swap (ed->hwHeadP) & 0xfffffff0;
 903                         edTailP = m32_swap (ed->hwTailP);
 904
 905                         /* unlink eds if they are not busy */
 906                         if ((edHeadP == edTailP) && (ed->state == ED_OPER))
 907                                 ep_unlink (ohci, ed);
 908                 }
 909
 910                 td_list = td_list_next;
 911         }
 912         return stat;
 913 }
 914
 915 /*-------------------------------------------------------------------------*
 916  * Virtual Root Hub
 917  *-------------------------------------------------------------------------*/
 918
 919 /* Device descriptor */
 920 static __u8 root_hub_dev_des[] =
 921 {
 922         0x12,       /*  __u8  bLength; */
 923         0x01,       /*  __u8  bDescriptorType; Device */
 924         0x10,       /*  __u16 bcdUSB; v1.1 */
 925         0x01,
 926         0x09,       /*  __u8  bDeviceClass; HUB_CLASSCODE */
 927         0x00,       /*  __u8  bDeviceSubClass; */
 928         0x00,       /*  __u8  bDeviceProtocol; */
 929         0x08,       /*  __u8  bMaxPacketSize0; 8 Bytes */
 930         0x00,       /*  __u16 idVendor; */
 931         0x00,
 932         0x00,       /*  __u16 idProduct; */
 933         0x00,
 934         0x00,       /*  __u16 bcdDevice; */
 935         0x00,
 936         0x00,       /*  __u8  iManufacturer; */
 937         0x01,       /*  __u8  iProduct; */
 938         0x00,       /*  __u8  iSerialNumber; */
 939         0x01        /*  __u8  bNumConfigurations; */
 940 };
 941
 942
 943 /* Configuration descriptor */
 944 static __u8 root_hub_config_des[] =
 945 {
 946         0x09,       /*  __u8  bLength; */
 947         0x02,       /*  __u8  bDescriptorType; Configuration */
 948         0x19,       /*  __u16 wTotalLength; */
 949         0x00,
 950         0x01,       /*  __u8  bNumInterfaces; */
 951         0x01,       /*  __u8  bConfigurationValue; */
 952         0x00,       /*  __u8  iConfiguration; */
 953         0x40,       /*  __u8  bmAttributes;
 954                  Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
 955         0x00,       /*  __u8  MaxPower; */
 956
 957         /* interface */
 958         0x09,       /*  __u8  if_bLength; */
 959         0x04,       /*  __u8  if_bDescriptorType; Interface */
 960         0x00,       /*  __u8  if_bInterfaceNumber; */
 961         0x00,       /*  __u8  if_bAlternateSetting; */
 962         0x01,       /*  __u8  if_bNumEndpoints; */
 963         0x09,       /*  __u8  if_bInterfaceClass; HUB_CLASSCODE */
 964         0x00,       /*  __u8  if_bInterfaceSubClass; */
 965         0x00,       /*  __u8  if_bInterfaceProtocol; */
 966         0x00,       /*  __u8  if_iInterface; */
 967
 968         /* endpoint */
 969         0x07,       /*  __u8  ep_bLength; */
 970         0x05,       /*  __u8  ep_bDescriptorType; Endpoint */
 971         0x81,       /*  __u8  ep_bEndpointAddress; IN Endpoint 1 */
 972         0x03,       /*  __u8  ep_bmAttributes; Interrupt */
 973         0x02,       /*  __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
 974         0x00,
 975         0xff        /*  __u8  ep_bInterval; 255 ms */
 976 };
 977
 978 static unsigned char root_hub_str_index0[] =
 979 {
 980         0x04,                   /*  __u8  bLength; */
 981         0x03,                   /*  __u8  bDescriptorType; String-descriptor */
 982         0x09,                   /*  __u8  lang ID */
 983         0x04,                   /*  __u8  lang ID */
 984 };
 985
 986 static unsigned char root_hub_str_index1[] =
 987 {
 988         28,                     /*  __u8  bLength; */
 989         0x03,                   /*  __u8  bDescriptorType; String-descriptor */
 990         'O',                    /*  __u8  Unicode */
 991         0,                              /*  __u8  Unicode */
 992         'H',                    /*  __u8  Unicode */
 993         0,                              /*  __u8  Unicode */
 994         'C',                    /*  __u8  Unicode */
 995         0,                              /*  __u8  Unicode */
 996         'I',                    /*  __u8  Unicode */
 997         0,                              /*  __u8  Unicode */
 998         ' ',                    /*  __u8  Unicode */
 999         0,                              /*  __u8  Unicode */
1000         'R',                    /*  __u8  Unicode */
1001         0,                              /*  __u8  Unicode */
1002         'o',                    /*  __u8  Unicode */
1003         0,                              /*  __u8  Unicode */
1004         'o',                    /*  __u8  Unicode */
1005         0,                              /*  __u8  Unicode */
1006         't',                    /*  __u8  Unicode */
1007         0,                              /*  __u8  Unicode */
1008         ' ',                    /*  __u8  Unicode */
1009         0,                              /*  __u8  Unicode */
1010         'H',                    /*  __u8  Unicode */
1011         0,                              /*  __u8  Unicode */
1012         'u',                    /*  __u8  Unicode */
1013         0,                              /*  __u8  Unicode */
1014         'b',                    /*  __u8  Unicode */
1015         0,                              /*  __u8  Unicode */
1016 };
1017
1018 /* Hub class-specific descriptor is constructed dynamically */
1019
1020
1021 /*-------------------------------------------------------------------------*/
1022
1023 #define OK(x)                   len = (x); break
1024 #ifdef DEBUG
1025 #define WR_RH_STAT(x)           {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);}
1026 #define WR_RH_PORTSTAT(x)       {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);}
1027 #else
1028 #define WR_RH_STAT(x)           writel((x), &gohci.regs->roothub.status)
1029 #define WR_RH_PORTSTAT(x)       writel((x), &gohci.regs->roothub.portstatus[wIndex-1])
1030 #endif
1031 #define RD_RH_STAT              roothub_status(&gohci)
1032 #define RD_RH_PORTSTAT          roothub_portstatus(&gohci,wIndex-1)
1033
1034 /* request to virtual root hub */
1035
1036 int rh_check_port_status(ohci_t *controller)
1037 {
1038         __u32 temp, ndp, i;
1039         int res;
1040
1041         res = -1;
1042         temp = roothub_a (controller);
1043         ndp = (temp & RH_A_NDP);
1044 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1045         ndp = (ndp == 2) ? 1:0;
1046 #endif
1047         for (i = 0; i < ndp; i++) {
1048                 temp = roothub_portstatus (controller, i);
1049                 /* check for a device disconnect */
1050                 if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
1051                         (RH_PS_PESC | RH_PS_CSC)) &&
1052                         ((temp & RH_PS_CCS) == 0)) {
1053                         res = i;
1054                         break;
1055                 }
1056         }
1057         return res;
1058 }
1059
1060 static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
1061                 void *buffer, int transfer_len, struct devrequest *cmd)
1062 {
1063         void * data = buffer;
1064         int leni = transfer_len;
1065         int len = 0;
1066         int stat = 0;
1067         __u32 datab[4];
1068         __u8 *data_buf = (__u8 *)datab;
1069         __u16 bmRType_bReq;
1070         __u16 wValue;
1071         __u16 wIndex;
1072         __u16 wLength;
1073
1074 #ifdef DEBUG
1075 urb_priv.actual_length = 0;
1076 pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
1077 #else
1078         wait_ms(1);
1079 #endif
1080         if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
1081                 info("Root-Hub submit IRQ: NOT implemented");
1082                 return 0;
1083         }
1084
1085         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
1086 #if defined(CONFIG_440EP) || defined(CONFIG_MPC5200)
1087         wValue        = __swap_16(cmd->value);
1088         wIndex        = __swap_16(cmd->index);
1089         wLength       = __swap_16(cmd->length);
1090 #else
1091         wValue        = m16_swap (cmd->value);
1092         wIndex        = m16_swap (cmd->index);
1093         wLength       = m16_swap (cmd->length);
1094 #endif /* CONFIG_440EP || CONFIG_MPC5200 */
1095
1096         info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
1097                 dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength);
1098
1099         switch (bmRType_bReq) {
1100         /* Request Destination:
1101            without flags: Device,
1102            RH_INTERFACE: interface,
1103            RH_ENDPOINT: endpoint,
1104            RH_CLASS means HUB here,
1105            RH_OTHER | RH_CLASS  almost ever means HUB_PORT here
1106         */
1107
1108 #if defined(CONFIG_440EP) || defined(CONFIG_MPC5200)
1109         case RH_GET_STATUS:
1110                         *(__u16 *) data_buf = __swap_16(1); OK (2);
1111         case RH_GET_STATUS | RH_INTERFACE:
1112                         *(__u16 *) data_buf = __swap_16(0); OK (2);
1113         case RH_GET_STATUS | RH_ENDPOINT:
1114                         *(__u16 *) data_buf = __swap_16(0); OK (2);
1115         case RH_GET_STATUS | RH_CLASS:
1116                         *(__u32 *) data_buf = __swap_32(
1117                                 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
1118                         OK (4);
1119         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1120                         *(__u32 *) data_buf = __swap_32(RD_RH_PORTSTAT); OK (4);
1121 #else
1122         case RH_GET_STATUS:
1123                         *(__u16 *) data_buf = m16_swap (1); OK (2);
1124         case RH_GET_STATUS | RH_INTERFACE:
1125                         *(__u16 *) data_buf = m16_swap (0); OK (2);
1126         case RH_GET_STATUS | RH_ENDPOINT:
1127                         *(__u16 *) data_buf = m16_swap (0); OK (2);
1128         case RH_GET_STATUS | RH_CLASS:
1129                         *(__u32 *) data_buf = m32_swap (
1130                                 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
1131                         OK (4);
1132         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1133                         *(__u32 *) data_buf = m32_swap (RD_RH_PORTSTAT); OK (4);
1134 #endif /* CONFIG_440EP || CONFIG_MPC5200 */
1135
1136         case RH_CLEAR_FEATURE | RH_ENDPOINT:
1137                 switch (wValue) {
1138                         case (RH_ENDPOINT_STALL): OK (0);
1139                 }
1140                 break;
1141
1142         case RH_CLEAR_FEATURE | RH_CLASS:
1143                 switch (wValue) {
1144                         case RH_C_HUB_LOCAL_POWER:
1145                                 OK(0);
1146                         case (RH_C_HUB_OVER_CURRENT):
1147                                         WR_RH_STAT(RH_HS_OCIC); OK (0);
1148                 }
1149                 break;
1150
1151         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
1152                 switch (wValue) {
1153                         case (RH_PORT_ENABLE):
1154                                         WR_RH_PORTSTAT (RH_PS_CCS ); OK (0);
1155                         case (RH_PORT_SUSPEND):
1156                                         WR_RH_PORTSTAT (RH_PS_POCI); OK (0);
1157                         case (RH_PORT_POWER):
1158                                         WR_RH_PORTSTAT (RH_PS_LSDA); OK (0);
1159                         case (RH_C_PORT_CONNECTION):
1160                                         WR_RH_PORTSTAT (RH_PS_CSC ); OK (0);
1161                         case (RH_C_PORT_ENABLE):
1162                                         WR_RH_PORTSTAT (RH_PS_PESC); OK (0);
1163                         case (RH_C_PORT_SUSPEND):
1164                                         WR_RH_PORTSTAT (RH_PS_PSSC); OK (0);
1165                         case (RH_C_PORT_OVER_CURRENT):
1166                                         WR_RH_PORTSTAT (RH_PS_OCIC); OK (0);
1167                         case (RH_C_PORT_RESET):
1168                                         WR_RH_PORTSTAT (RH_PS_PRSC); OK (0);
1169                 }
1170                 break;
1171
1172         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
1173                 switch (wValue) {
1174                         case (RH_PORT_SUSPEND):
1175                                         WR_RH_PORTSTAT (RH_PS_PSS ); OK (0);
1176                         case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
1177                                         if (RD_RH_PORTSTAT & RH_PS_CCS)
1178                                             WR_RH_PORTSTAT (RH_PS_PRS);
1179                                         OK (0);
1180                         case (RH_PORT_POWER):
1181                                         WR_RH_PORTSTAT (RH_PS_PPS ); OK (0);
1182                         case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
1183                                         if (RD_RH_PORTSTAT & RH_PS_CCS)
1184                                             WR_RH_PORTSTAT (RH_PS_PES );
1185                                         OK (0);
1186                 }
1187                 break;
1188
1189         case RH_SET_ADDRESS: gohci.rh.devnum = wValue; OK(0);
1190
1191         case RH_GET_DESCRIPTOR:
1192                 switch ((wValue & 0xff00) >> 8) {
1193                         case (0x01): /* device descriptor */
1194                                 len = min_t(unsigned int,
1195                                           leni,
1196                                           min_t(unsigned int,
1197                                               sizeof (root_hub_dev_des),
1198                                               wLength));
1199                                 data_buf = root_hub_dev_des; OK(len);
1200                         case (0x02): /* configuration descriptor */
1201                                 len = min_t(unsigned int,
1202                                           leni,
1203                                           min_t(unsigned int,
1204                                               sizeof (root_hub_config_des),
1205                                               wLength));
1206                                 data_buf = root_hub_config_des; OK(len);
1207                         case (0x03): /* string descriptors */
1208                                 if(wValue==0x0300) {
1209                                         len = min_t(unsigned int,
1210                                                   leni,
1211                                                   min_t(unsigned int,
1212                                                       sizeof (root_hub_str_index0),
1213                                                       wLength));
1214                                         data_buf = root_hub_str_index0;
1215                                         OK(len);
1216                                 }
1217                                 if(wValue==0x0301) {
1218                                         len = min_t(unsigned int,
1219                                                   leni,
1220                                                   min_t(unsigned int,
1221                                                       sizeof (root_hub_str_index1),
1222                                                       wLength));
1223                                         data_buf = root_hub_str_index1;
1224                                         OK(len);
1225                         }
1226                         default:
1227                                 stat = USB_ST_STALLED;
1228                 }
1229                 break;
1230
1231         case RH_GET_DESCRIPTOR | RH_CLASS:
1232         {
1233                 __u32 temp = roothub_a (&gohci);
1234
1235                 data_buf [0] = 9;               /* min length; */
1236                 data_buf [1] = 0x29;
1237                 data_buf [2] = temp & RH_A_NDP;
1238 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1239                 data_buf [2] = (data_buf [2] == 2) ? 1:0;
1240 #endif
1241                 data_buf [3] = 0;
1242                 if (temp & RH_A_PSM)    /* per-port power switching? */
1243                         data_buf [3] |= 0x1;
1244                 if (temp & RH_A_NOCP)   /* no overcurrent reporting? */
1245                         data_buf [3] |= 0x10;
1246                 else if (temp & RH_A_OCPM)      /* per-port overcurrent reporting? */
1247                         data_buf [3] |= 0x8;
1248
1249                 /* corresponds to data_buf[4-7] */
1250                 datab [1] = 0;
1251                 data_buf [5] = (temp & RH_A_POTPGT) >> 24;
1252                 temp = roothub_b (&gohci);
1253                 data_buf [7] = temp & RH_B_DR;
1254                 if (data_buf [2] < 7) {
1255                         data_buf [8] = 0xff;
1256                 } else {
1257                         data_buf [0] += 2;
1258                         data_buf [8] = (temp & RH_B_DR) >> 8;
1259                         data_buf [10] = data_buf [9] = 0xff;
1260                 }
1261
1262                 len = min_t(unsigned int, leni,
1263                             min_t(unsigned int, data_buf [0], wLength));
1264                 OK (len);
1265         }
1266
1267         case RH_GET_CONFIGURATION:      *(__u8 *) data_buf = 0x01; OK (1);
1268
1269         case RH_SET_CONFIGURATION:      WR_RH_STAT (0x10000); OK (0);
1270
1271         default:
1272                 dbg ("unsupported root hub command");
1273                 stat = USB_ST_STALLED;
1274         }
1275
1276 #ifdef  DEBUG
1277         ohci_dump_roothub (&gohci, 1);
1278 #else
1279         wait_ms(1);
1280 #endif
1281
1282         len = min_t(int, len, leni);
1283         if (data != data_buf)
1284             memcpy (data, data_buf, len);
1285         dev->act_len = len;
1286         dev->status = stat;
1287
1288 #ifdef DEBUG
1289         if (transfer_len)
1290                 urb_priv.actual_length = transfer_len;
1291         pkt_print(dev, pipe, buffer, transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
1292 #else
1293         wait_ms(1);
1294 #endif
1295
1296         return stat;
1297 }
1298
1299 /*-------------------------------------------------------------------------*/
1300
1301 /* common code for handling submit messages - used for all but root hub */
1302 /* accesses. */
1303 int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1304                 int transfer_len, struct devrequest *setup, int interval)
1305 {
1306         int stat = 0;
1307         int maxsize = usb_maxpacket(dev, pipe);
1308         int timeout;
1309
1310         /* device pulled? Shortcut the action. */
1311         if (devgone == dev) {
1312                 dev->status = USB_ST_CRC_ERR;
1313                 return 0;
1314         }
1315
1316 #ifdef DEBUG
1317         urb_priv.actual_length = 0;
1318         pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1319 #else
1320         wait_ms(1);
1321 #endif
1322         if (!maxsize) {
1323                 err("submit_common_message: pipesize for pipe %lx is zero",
1324                         pipe);
1325                 return -1;
1326         }
1327
1328         if (sohci_submit_job(dev, pipe, buffer, transfer_len, setup, interval) < 0) {
1329                 err("sohci_submit_job failed");
1330                 return -1;
1331         }
1332
1333 #if 0
1334         wait_ms(10);
1335         /* ohci_dump_status(&gohci); */
1336 #endif
1337
1338         /* allow more time for a BULK device to react - some are slow */
1339 #define BULK_TO  5000   /* timeout in milliseconds */
1340         if (usb_pipetype (pipe) == PIPE_BULK)
1341                 timeout = BULK_TO;
1342         else
1343                 timeout = 100;
1344
1345         /* wait for it to complete */
1346         for (;;) {
1347                 /* check whether the controller is done */
1348                 stat = hc_interrupt();
1349                 if (stat < 0) {
1350                         stat = USB_ST_CRC_ERR;
1351                         break;
1352                 }
1353
1354 #ifdef S3C24X0_merge
1355                 /* NOTE: since we are not interrupt driven in U-Boot and always
1356                  * handle only one URB at a time, we cannot assume the
1357                  * transaction finished on the first successful return from
1358                  * hc_interrupt().. unless the flag for current URB is set,
1359                  * meaning that all TD's to/from device got actually
1360                  * transferred and processed. If the current URB is not
1361                  * finished we need to re-iterate this loop so as
1362                  * hc_interrupt() gets called again as there needs to be some
1363                  * more TD's to process still */
1364                 if ((stat >= 0) && (stat != 0xff) && (urb_finished)) {
1365 #else
1366                 if (stat >= 0 && stat != 0xff) {
1367 #endif
1368                         /* 0xff is returned for an SF-interrupt */
1369                         break;
1370                 }
1371
1372                 if (--timeout) {
1373                         wait_ms(1);
1374                 } else {
1375                         err("CTL:TIMEOUT ");
1376 #ifdef S3C24X0_merge
1377                         dbg("submit_common_msg: TO status %x\n", stat);
1378                         stat = USB_ST_CRC_ERR;
1379                         urb_finished = 1;
1380 #endif
1381                         stat = USB_ST_CRC_ERR;
1382                         break;
1383                 }
1384         }
1385 #ifndef S3C24X0_merge
1386         /* we got an Root Hub Status Change interrupt */
1387         if (got_rhsc) {
1388 #ifdef DEBUG
1389                 ohci_dump_roothub (&gohci, 1);
1390 #endif
1391                 got_rhsc = 0;
1392                 /* abuse timeout */
1393                 timeout = rh_check_port_status(&gohci);
1394                 if (timeout >= 0) {
1395 #if 0 /* this does nothing useful, but leave it here in case that changes */
1396                         /* the called routine adds 1 to the passed value */
1397                         usb_hub_port_connect_change(gohci.rh.dev, timeout - 1);
1398 #endif
1399                         /*
1400                          * XXX
1401                          * This is potentially dangerous because it assumes
1402                          * that only one device is ever plugged in!
1403                          */
1404                         devgone = dev;
1405                 }
1406         }
1407 #endif /* S3C24X0_merge */
1408
1409         dev->status = stat;
1410         dev->act_len = transfer_len;
1411
1412 #ifdef DEBUG
1413         pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)", usb_pipein(pipe));
1414 #else
1415         wait_ms(1);
1416 #endif
1417
1418         /* free TDs in urb_priv */
1419         urb_free_priv (&urb_priv);
1420         return 0;
1421 }
1422
1423 /* submit routines called from usb.c */
1424 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1425                 int transfer_len)
1426 {
1427         info("submit_bulk_msg");
1428         return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
1429 }
1430
1431 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1432                 int transfer_len, struct devrequest *setup)
1433 {
1434         int maxsize = usb_maxpacket(dev, pipe);
1435
1436         info("submit_control_msg");
1437 #ifdef DEBUG
1438         urb_priv.actual_length = 0;
1439         pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1440 #else
1441         wait_ms(1);
1442 #endif
1443         if (!maxsize) {
1444                 err("submit_control_message: pipesize for pipe %lx is zero",
1445                         pipe);
1446                 return -1;
1447         }
1448         if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
1449                 gohci.rh.dev = dev;
1450                 /* root hub - redirect */
1451                 return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
1452                         setup);
1453         }
1454
1455         return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
1456 }
1457
1458 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1459                 int transfer_len, int interval)
1460 {
1461         info("submit_int_msg");
1462         return -1;
1463 }
1464
1465 /*-------------------------------------------------------------------------*
1466  * HC functions
1467  *-------------------------------------------------------------------------*/
1468
1469 /* reset the HC and BUS */
1470
1471 static int hc_reset (ohci_t *ohci)
1472 {
1473         int timeout = 30;
1474         int smm_timeout = 50; /* 0,5 sec */
1475
1476         dbg("%s\n", __FUNCTION__);
1477
1478         if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
1479                 writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */
1480                 info("USB HC TakeOver from SMM");
1481                 while (readl (&ohci->regs->control) & OHCI_CTRL_IR) {
1482                         wait_ms (10);
1483                         if (--smm_timeout == 0) {
1484                                 err("USB HC TakeOver failed!");
1485                                 return -1;
1486                         }
1487                 }
1488         }
1489
1490         /* Disable HC interrupts */
1491         writel (OHCI_INTR_MIE, &ohci->regs->intrdisable);
1492
1493         dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;\n",
1494                 ohci->slot_name,
1495                 readl(&ohci->regs->control));
1496
1497         /* Reset USB (needed by some controllers) */
1498         ohci->hc_control = 0;
1499         writel (ohci->hc_control, &ohci->regs->control);
1500
1501         /* HC Reset requires max 10 us delay */
1502         writel (OHCI_HCR,  &ohci->regs->cmdstatus);
1503         while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
1504                 if (--timeout == 0) {
1505                         err("USB HC reset timed out!");
1506                         return -1;
1507                 }
1508                 udelay (1);
1509         }
1510         return 0;
1511 }
1512
1513 /*-------------------------------------------------------------------------*/
1514
1515 /* Start an OHCI controller, set the BUS operational
1516  * enable interrupts
1517  * connect the virtual root hub */
1518
1519 static int hc_start (ohci_t * ohci)
1520 {
1521         __u32 mask;
1522         unsigned int fminterval;
1523
1524         ohci->disabled = 1;
1525
1526         /* Tell the controller where the control and bulk lists are
1527          * The lists are empty now. */
1528
1529         writel (0, &ohci->regs->ed_controlhead);
1530         writel (0, &ohci->regs->ed_bulkhead);
1531
1532         writel ((__u32)ohci->hcca, &ohci->regs->hcca); /* a reset clears this */
1533
1534         fminterval = 0x2edf;
1535         writel ((fminterval * 9) / 10, &ohci->regs->periodicstart);
1536         fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
1537         writel (fminterval, &ohci->regs->fminterval);
1538         writel (0x628, &ohci->regs->lsthresh);
1539
1540         /* start controller operations */
1541         ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
1542         ohci->disabled = 0;
1543         writel (ohci->hc_control, &ohci->regs->control);
1544
1545         /* disable all interrupts */
1546         mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD |
1547                         OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
1548                         OHCI_INTR_OC | OHCI_INTR_MIE);
1549         writel (mask, &ohci->regs->intrdisable);
1550         /* clear all interrupts */
1551         mask &= ~OHCI_INTR_MIE;
1552         writel (mask, &ohci->regs->intrstatus);
1553         /* Choose the interrupts we care about now  - but w/o MIE */
1554         mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
1555         writel (mask, &ohci->regs->intrenable);
1556
1557 #ifdef  OHCI_USE_NPS
1558         /* required for AMD-756 and some Mac platforms */
1559         writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM,
1560                 &ohci->regs->roothub.a);
1561         writel (RH_HS_LPSC, &ohci->regs->roothub.status);
1562 #endif  /* OHCI_USE_NPS */
1563
1564 #define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);})
1565         /* POTPGT delay is bits 24-31, in 2 ms units. */
1566         mdelay ((roothub_a (ohci) >> 23) & 0x1fe);
1567
1568         /* connect the virtual root hub */
1569         ohci->rh.devnum = 0;
1570
1571         return 0;
1572 }
1573
1574 /*-------------------------------------------------------------------------*/
1575
1576 /* an interrupt happens */
1577
1578 static int hc_interrupt (void)
1579 {
1580         ohci_t *ohci = &gohci;
1581         struct ohci_regs *regs = ohci->regs;
1582         int ints;
1583         int stat = -1;
1584
1585 #ifdef S3C24X0_merge
1586
1587         if ((ohci->hcca->done_head != 0) &&
1588             !(m32_swap (ohci->hcca->done_head) & 0x01)) {
1589                 ints =  OHCI_INTR_WDH;
1590         } else if ((ints = readl (&regs->intrstatus)) == ~(u32)0) {
1591                 ohci->disabled++;
1592                 err ("%s device removed!", ohci->slot_name);
1593                 return -1;
1594         } else if ((ints &= readl (&regs->intrenable)) == 0) {
1595                 dbg("hc_interrupt: returning..\n");
1596                 return 0xff;
1597         }
1598 #else
1599         if ((ohci->hcca->done_head != 0) && !(m32_swap (ohci->hcca->done_head) & 0x01)) {
1600                 ints =  OHCI_INTR_WDH;
1601         } else {
1602                 ints = readl (&regs->intrstatus);
1603         }
1604 #endif
1605         /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
1606
1607         if (ints & OHCI_INTR_RHSC) {
1608                 got_rhsc = 1;
1609 #ifdef S3C24X0_merge
1610                 stat = 0xff;
1611 #endif
1612         }
1613
1614         if (ints & OHCI_INTR_UE) {
1615                 ohci->disabled++;
1616                 err ("OHCI Unrecoverable Error, controller usb-%s disabled",
1617                         ohci->slot_name);
1618                 /* e.g. due to PCI Master/Target Abort */
1619
1620 #ifdef  DEBUG
1621                 ohci_dump (ohci, 1);
1622 #else
1623         wait_ms(1);
1624 #endif
1625                 /* FIXME: be optimistic, hope that bug won't repeat often. */
1626                 /* Make some non-interrupt context restart the controller. */
1627                 /* Count and limit the retries though; either hardware or */
1628                 /* software errors can go forever... */
1629                 hc_reset (ohci);
1630                 return -1;
1631         }
1632
1633         if (ints & OHCI_INTR_WDH) {
1634                 wait_ms(1);
1635                 writel (OHCI_INTR_WDH, &regs->intrdisable);
1636                 stat = dl_done_list (&gohci, dl_reverse_done_list (&gohci));
1637                 writel (OHCI_INTR_WDH, &regs->intrenable);
1638         }
1639
1640         if (ints & OHCI_INTR_SO) {
1641                 dbg("USB Schedule overrun\n");
1642                 writel (OHCI_INTR_SO, &regs->intrenable);
1643                 stat = -1;
1644         }
1645
1646         /* FIXME:  this assumes SOF (1/ms) interrupts don't get lost... */
1647         if (ints & OHCI_INTR_SF) {
1648                 unsigned int frame = m16_swap (ohci->hcca->frame_no) & 1;
1649                 wait_ms(1);
1650                 writel (OHCI_INTR_SF, &regs->intrdisable);
1651                 if (ohci->ed_rm_list[frame] != NULL)
1652                         writel (OHCI_INTR_SF, &regs->intrenable);
1653                 stat = 0xff;
1654         }
1655
1656         writel (ints, &regs->intrstatus);
1657         return stat;
1658 }
1659
1660 /*-------------------------------------------------------------------------*/
1661
1662 /*-------------------------------------------------------------------------*/
1663
1664 /* De-allocate all resources.. */
1665
1666 static void hc_release_ohci (ohci_t *ohci)
1667 {
1668         dbg ("USB HC release ohci usb-%s", ohci->slot_name);
1669
1670         if (!ohci->disabled)
1671                 hc_reset (ohci);
1672 }
1673
1674 /*-------------------------------------------------------------------------*/
1675
1676 /*
1677  * low level initalisation routine, called from usb.c
1678  */
1679 static char ohci_inited = 0;
1680
1681 int usb_lowlevel_init(void)
1682 {
1683
1684 #ifdef CFG_USB_OHCI_CPU_INIT
1685         /* cpu dependant init */
1686         if(usb_cpu_init())
1687                 return -1;
1688 #endif
1689
1690 #ifdef CFG_USB_OHCI_BOARD_INIT
1691         /*  board dependant init */
1692         if(usb_board_init())
1693                 return -1;
1694 #endif
1695         memset (&gohci, 0, sizeof (ohci_t));
1696         memset (&urb_priv, 0, sizeof (urb_priv_t));
1697
1698         /* align the storage */
1699         if ((__u32)&ghcca[0] & 0xff) {
1700                 err("HCCA not aligned!!");
1701                 return -1;
1702         }
1703         phcca = &ghcca[0];
1704         info("aligned ghcca %p", phcca);
1705         memset(&ohci_dev, 0, sizeof(struct ohci_device));
1706         if ((__u32)&ohci_dev.ed[0] & 0x7) {
1707                 err("EDs not aligned!!");
1708                 return -1;
1709         }
1710         memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
1711         if ((__u32)gtd & 0x7) {
1712                 err("TDs not aligned!!");
1713                 return -1;
1714         }
1715         ptd = gtd;
1716         gohci.hcca = phcca;
1717         memset (phcca, 0, sizeof (struct ohci_hcca));
1718
1719         gohci.disabled = 1;
1720         gohci.sleeping = 0;
1721         gohci.irq = -1;
1722         gohci.regs = (struct ohci_regs *)CFG_USB_OHCI_REGS_BASE;
1723
1724         gohci.flags = 0;
1725         gohci.slot_name = CFG_USB_OHCI_SLOT_NAME;
1726
1727         if (hc_reset (&gohci) < 0) {
1728                 hc_release_ohci (&gohci);
1729                 err ("can't reset usb-%s", gohci.slot_name);
1730 #ifdef CFG_USB_OHCI_BOARD_INIT
1731                 /* board dependant cleanup */
1732                 usb_board_init_fail();
1733 #endif
1734
1735 #ifdef CFG_USB_OHCI_CPU_INIT
1736                 /* cpu dependant cleanup */
1737                 usb_cpu_init_fail();
1738 #endif
1739                 return -1;
1740         }
1741
1742         /* FIXME this is a second HC reset; why?? */
1743         /* writel(gohci.hc_control = OHCI_USB_RESET, &gohci.regs->control);
1744            wait_ms(10); */
1745         if (hc_start (&gohci) < 0) {
1746                 err ("can't start usb-%s", gohci.slot_name);
1747                 hc_release_ohci (&gohci);
1748                 /* Initialization failed */
1749 #ifdef CFG_USB_OHCI_BOARD_INIT
1750                 /* board dependant cleanup */
1751                 usb_board_stop();
1752 #endif
1753
1754 #ifdef CFG_USB_OHCI_CPU_INIT
1755                 /* cpu dependant cleanup */
1756                 usb_cpu_stop();
1757 #endif
1758                 return -1;
1759         }
1760
1761 #ifdef  DEBUG
1762         ohci_dump (&gohci, 1);
1763 #else
1764         wait_ms(1);
1765 # ifdef S3C24X0_merge
1766         urb_finished = 1;
1767 # endif
1768 #endif
1769         ohci_inited = 1;
1770         return 0;
1771 }
1772
1773 int usb_lowlevel_stop(void)
1774 {
1775         /* this gets called really early - before the controller has */
1776         /* even been initialized! */
1777         if (!ohci_inited)
1778                 return 0;
1779         /* TODO release any interrupts, etc. */
1780         /* call hc_release_ohci() here ? */
1781         hc_reset (&gohci);
1782
1783 #ifdef CFG_USB_OHCI_BOARD_INIT
1784         /* board dependant cleanup */
1785         if(usb_board_stop())
1786                 return -1;
1787 #endif
1788
1789 #ifdef CFG_USB_OHCI_CPU_INIT
1790         /* cpu dependant cleanup */
1791         if(usb_cpu_stop())
1792                 return -1;
1793 #endif
1794
1795         return 0;
1796 }
1797 #endif /* CONFIG_USB_OHCI_NEW */