git.sur5r.net Git - u-boot/blob - 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 #if defined(CONFIG_ARM920T) || \
  66     defined(CONFIG_S3C2400) || \
  67     defined(CONFIG_S3C2410) || \
  68     defined(CONFIG_440EP) || \
  69     defined(CONFIG_MPC5200)
  70 # define OHCI_USE_NPS           /* force NoPowerSwitching mode */
  71 #endif
  72
  73 #undef OHCI_VERBOSE_DEBUG       /* not always helpful */
  74 #undef DEBUG
  75 #undef SHOW_INFO
  76 #undef OHCI_FILL_TRACE
  77
  78 /* For initializing controller (mask in an HCFS mode too) */
  79 #define OHCI_CONTROL_INIT \
  80         (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
  81
  82 #define readl(a) (*((vu_long *)(a)))
  83 #define writel(a, b) (*((vu_long *)(b)) = ((vu_long)a))
  84
  85 #define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
  86
  87 #undef DEBUG
  88 #ifdef DEBUG
  89 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
  90 #else
  91 #define dbg(format, arg...) do {} while(0)
  92 #endif /* DEBUG */
  93 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
  94 #undef SHOW_INFO
  95 #ifdef SHOW_INFO
  96 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
  97 #else
  98 #define info(format, arg...) do {} while(0)
  99 #endif
 100
 101 #if defined(CONFIG_440EP) || defined(CONFIG_MPC5200)
 102 # define m16_swap(x) (x)
 103 # define m32_swap(x) (x)
 104 #else
 105 # define m16_swap(x) swap_16(x)
 106 # define m32_swap(x) swap_32(x)
 107 #endif
 108
 109 /* global ohci_t */
 110 static ohci_t gohci;
 111 /* this must be aligned to a 256 byte boundary */
 112 struct ohci_hcca ghcca[1];
 113 /* a pointer to the aligned storage */
 114 struct ohci_hcca *phcca;
 115 /* this allocates EDs for all possible endpoints */
 116 struct ohci_device ohci_dev;
 117 /* urb_priv */
 118 urb_priv_t urb_priv;
 119 /* RHSC flag */
 120 int got_rhsc;
 121 /* device which was disconnected */
 122 struct usb_device *devgone;
 123
 124 /* flag guarding URB transation */
 125 int urb_finished = 0;
 126
 127
 128 /*-------------------------------------------------------------------------*/
 129
 130 /* AMD-756 (D2 rev) reports corrupt register contents in some cases.
 131  * The erratum (#4) description is incorrect.  AMD's workaround waits
 132  * till some bits (mostly reserved) are clear; ok for all revs.
 133  */
 134 #define OHCI_QUIRK_AMD756 0xabcd
 135 #define read_roothub(hc, register, mask) ({ \
 136         u32 temp = readl (&hc->regs->roothub.register); \
 137         if (hc->flags & OHCI_QUIRK_AMD756) \
 138                 while (temp & mask) \
 139                         temp = readl (&hc->regs->roothub.register); \
 140         temp; })
 141
 142 static u32 roothub_a (struct ohci *hc)
 143         { return read_roothub (hc, a, 0xfc0fe000); }
 144 static inline u32 roothub_b (struct ohci *hc)
 145         { return readl (&hc->regs->roothub.b); }
 146 static inline u32 roothub_status (struct ohci *hc)
 147         { return readl (&hc->regs->roothub.status); }
 148 static u32 roothub_portstatus (struct ohci *hc, int i)
 149         { return read_roothub (hc, portstatus [i], 0xffe0fce0); }
 150
 151
 152 /* forward declaration */
 153 static int hc_interrupt (void);
 154 static void
 155 td_submit_job (struct usb_device * dev, unsigned long pipe, void * buffer,
 156         int transfer_len, struct devrequest * setup, urb_priv_t * urb, int interval);
 157
 158 /*-------------------------------------------------------------------------*
 159  * URB support functions
 160  *-------------------------------------------------------------------------*/
 161
 162 /* free HCD-private data associated with this URB */
 163
 164 static void urb_free_priv (urb_priv_t * urb)
 165 {
 166         int             i;
 167         int             last;
 168         struct td       * td;
 169
 170         last = urb->length - 1;
 171         if (last >= 0) {
 172                 for (i = 0; i <= last; i++) {
 173                         td = urb->td[i];
 174                         if (td) {
 175                                 td->usb_dev = NULL;
 176                                 urb->td[i] = NULL;
 177                         }
 178                 }
 179         }
 180 }
 181
 182 /*-------------------------------------------------------------------------*/
 183
 184 #ifdef DEBUG
 185 static int sohci_get_current_frame_number (struct usb_device * dev);
 186
 187 /* debug| print the main components of an URB
 188  * small: 0) header + data packets 1) just header */
 189
 190 static void pkt_print (struct usb_device * dev, unsigned long pipe, void * buffer,
 191         int transfer_len, struct devrequest * setup, char * str, int small)
 192 {
 193         urb_priv_t * purb = &urb_priv;
 194
 195         dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
 196                         str,
 197                         sohci_get_current_frame_number (dev),
 198                         usb_pipedevice (pipe),
 199                         usb_pipeendpoint (pipe),
 200                         usb_pipeout (pipe)? 'O': 'I',
 201                         usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"):
 202                                 (usb_pipecontrol (pipe)? "CTRL": "BULK"),
 203                         purb->actual_length,
 204                         transfer_len, dev->status);
 205 #ifdef  OHCI_VERBOSE_DEBUG
 206         if (!small) {
 207                 int i, len;
 208
 209                 if (usb_pipecontrol (pipe)) {
 210                         printf (__FILE__ ": cmd(8):");
 211                         for (i = 0; i < 8 ; i++)
 212                                 printf (" %02x", ((__u8 *) setup) [i]);
 213                         printf ("\n");
 214                 }
 215                 if (transfer_len > 0 && buffer) {
 216                         printf (__FILE__ ": data(%d/%d):",
 217                                 purb->actual_length,
 218                                 transfer_len);
 219                         len = usb_pipeout (pipe)?
 220                                         transfer_len: purb->actual_length;
 221                         for (i = 0; i < 16 && i < len; i++)
 222                                 printf (" %02x", ((__u8 *) buffer) [i]);
 223                         printf ("%s\n", i < len? "...": "");
 224                 }
 225         }
 226 #endif
 227 }
 228
 229 /* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
 230 void ep_print_int_eds (ohci_t *ohci, char * str) {
 231         int i, j;
 232          __u32 * ed_p;
 233         for (i= 0; i < 32; i++) {
 234                 j = 5;
 235                 ed_p = &(ohci->hcca->int_table [i]);
 236                 if (*ed_p == 0)
 237                     continue;
 238                 printf (__FILE__ ": %s branch int %2d(%2x):", str, i, i);
 239                 while (*ed_p != 0 && j--) {
 240                         ed_t *ed = (ed_t *)m32_swap(ed_p);
 241                         printf (" ed: %4x;", ed->hwINFO);
 242                         ed_p = &ed->hwNextED;
 243                 }
 244                 printf ("\n");
 245         }
 246 }
 247
 248 static void ohci_dump_intr_mask (char *label, __u32 mask)
 249 {
 250         dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
 251                 label,
 252                 mask,
 253                 (mask & OHCI_INTR_MIE) ? " MIE" : "",
 254                 (mask & OHCI_INTR_OC) ? " OC" : "",
 255                 (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
 256                 (mask & OHCI_INTR_FNO) ? " FNO" : "",
 257                 (mask & OHCI_INTR_UE) ? " UE" : "",
 258                 (mask & OHCI_INTR_RD) ? " RD" : "",
 259                 (mask & OHCI_INTR_SF) ? " SF" : "",
 260                 (mask & OHCI_INTR_WDH) ? " WDH" : "",
 261                 (mask & OHCI_INTR_SO) ? " SO" : ""
 262                 );
 263 }
 264
 265 static void maybe_print_eds (char *label, __u32 value)
 266 {
 267         ed_t *edp = (ed_t *)value;
 268
 269         if (value) {
 270                 dbg ("%s %08x", label, value);
 271                 dbg ("%08x", edp->hwINFO);
 272                 dbg ("%08x", edp->hwTailP);
 273                 dbg ("%08x", edp->hwHeadP);
 274                 dbg ("%08x", edp->hwNextED);
 275         }
 276 }
 277
 278 static char * hcfs2string (int state)
 279 {
 280         switch (state) {
 281                 case OHCI_USB_RESET:    return "reset";
 282                 case OHCI_USB_RESUME:   return "resume";
 283                 case OHCI_USB_OPER:     return "operational";
 284                 case OHCI_USB_SUSPEND:  return "suspend";
 285         }
 286         return "?";
 287 }
 288
 289 /* dump control and status registers */
 290 static void ohci_dump_status (ohci_t *controller)
 291 {
 292         struct ohci_regs        *regs = controller->regs;
 293         __u32                   temp;
 294
 295         temp = readl (&regs->revision) & 0xff;
 296         if (temp != 0x10)
 297                 dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f));
 298
 299         temp = readl (&regs->control);
 300         dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
 301                 (temp & OHCI_CTRL_RWE) ? " RWE" : "",
 302                 (temp & OHCI_CTRL_RWC) ? " RWC" : "",
 303                 (temp & OHCI_CTRL_IR) ? " IR" : "",
 304                 hcfs2string (temp & OHCI_CTRL_HCFS),
 305                 (temp & OHCI_CTRL_BLE) ? " BLE" : "",
 306                 (temp & OHCI_CTRL_CLE) ? " CLE" : "",
 307                 (temp & OHCI_CTRL_IE) ? " IE" : "",
 308                 (temp & OHCI_CTRL_PLE) ? " PLE" : "",
 309                 temp & OHCI_CTRL_CBSR
 310                 );
 311
 312         temp = readl (&regs->cmdstatus);
 313         dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
 314                 (temp & OHCI_SOC) >> 16,
 315                 (temp & OHCI_OCR) ? " OCR" : "",
 316                 (temp & OHCI_BLF) ? " BLF" : "",
 317                 (temp & OHCI_CLF) ? " CLF" : "",
 318                 (temp & OHCI_HCR) ? " HCR" : ""
 319                 );
 320
 321         ohci_dump_intr_mask ("intrstatus", readl (&regs->intrstatus));
 322         ohci_dump_intr_mask ("intrenable", readl (&regs->intrenable));
 323
 324         maybe_print_eds ("ed_periodcurrent", readl (&regs->ed_periodcurrent));
 325
 326         maybe_print_eds ("ed_controlhead", readl (&regs->ed_controlhead));
 327         maybe_print_eds ("ed_controlcurrent", readl (&regs->ed_controlcurrent));
 328
 329         maybe_print_eds ("ed_bulkhead", readl (&regs->ed_bulkhead));
 330         maybe_print_eds ("ed_bulkcurrent", readl (&regs->ed_bulkcurrent));
 331
 332         maybe_print_eds ("donehead", readl (&regs->donehead));
 333 }
 334
 335 static void ohci_dump_roothub (ohci_t *controller, int verbose)
 336 {
 337         __u32                   temp, ndp, i;
 338
 339         temp = roothub_a (controller);
 340         ndp = (temp & RH_A_NDP);
 341 #ifdef CONFIG_AT91C_PQFP_UHPBUG
 342         ndp = (ndp == 2) ? 1:0;
 343 #endif
 344         if (verbose) {
 345                 dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
 346                         ((temp & RH_A_POTPGT) >> 24) & 0xff,
 347                         (temp & RH_A_NOCP) ? " NOCP" : "",
 348                         (temp & RH_A_OCPM) ? " OCPM" : "",
 349                         (temp & RH_A_DT) ? " DT" : "",
 350                         (temp & RH_A_NPS) ? " NPS" : "",
 351                         (temp & RH_A_PSM) ? " PSM" : "",
 352                         ndp
 353                         );
 354                 temp = roothub_b (controller);
 355                 dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
 356                         temp,
 357                         (temp & RH_B_PPCM) >> 16,
 358                         (temp & RH_B_DR)
 359                         );
 360                 temp = roothub_status (controller);
 361                 dbg ("roothub.status: %08x%s%s%s%s%s%s",
 362                         temp,
 363                         (temp & RH_HS_CRWE) ? " CRWE" : "",
 364                         (temp & RH_HS_OCIC) ? " OCIC" : "",
 365                         (temp & RH_HS_LPSC) ? " LPSC" : "",
 366                         (temp & RH_HS_DRWE) ? " DRWE" : "",
 367                         (temp & RH_HS_OCI) ? " OCI" : "",
 368                         (temp & RH_HS_LPS) ? " LPS" : ""
 369                         );
 370         }
 371
 372         for (i = 0; i < ndp; i++) {
 373                 temp = roothub_portstatus (controller, i);
 374                 dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
 375                         i,
 376                         temp,
 377                         (temp & RH_PS_PRSC) ? " PRSC" : "",
 378                         (temp & RH_PS_OCIC) ? " OCIC" : "",
 379                         (temp & RH_PS_PSSC) ? " PSSC" : "",
 380                         (temp & RH_PS_PESC) ? " PESC" : "",
 381                         (temp & RH_PS_CSC) ? " CSC" : "",
 382
 383                         (temp & RH_PS_LSDA) ? " LSDA" : "",
 384                         (temp & RH_PS_PPS) ? " PPS" : "",
 385                         (temp & RH_PS_PRS) ? " PRS" : "",
 386                         (temp & RH_PS_POCI) ? " POCI" : "",
 387                         (temp & RH_PS_PSS) ? " PSS" : "",
 388
 389                         (temp & RH_PS_PES) ? " PES" : "",
 390                         (temp & RH_PS_CCS) ? " CCS" : ""
 391                         );
 392         }
 393 }
 394
 395 static void ohci_dump (ohci_t *controller, int verbose)
 396 {
 397         dbg ("OHCI controller usb-%s state", controller->slot_name);
 398
 399         /* dumps some of the state we know about */
 400         ohci_dump_status (controller);
 401         if (verbose)
 402                 ep_print_int_eds (controller, "hcca");
 403         dbg ("hcca frame #%04x", controller->hcca->frame_no);
 404         ohci_dump_roothub (controller, 1);
 405 }
 406
 407
 408 #endif /* DEBUG */
 409
 410 /*-------------------------------------------------------------------------*
 411  * Interface functions (URB)
 412  *-------------------------------------------------------------------------*/
 413
 414 /* get a transfer request */
 415
 416 int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
 417                 int transfer_len, struct devrequest *setup, int interval)
 418 {
 419         ohci_t *ohci;
 420         ed_t * ed;
 421         urb_priv_t *purb_priv;
 422         int i, size = 0;
 423
 424         ohci = &gohci;
 425
 426         /* when controller's hung, permit only roothub cleanup attempts
 427          * such as powering down ports */
 428         if (ohci->disabled) {
 429                 err("sohci_submit_job: EPIPE");
 430                 return -1;
 431         }
 432
 433         /* if we have an unfinished URB from previous transaction let's
 434          * fail and scream as quickly as possible so as not to corrupt
 435          * further communication */
 436         if (!urb_finished) {
 437                 err("sohci_submit_job: URB NOT FINISHED");
 438                 return -1;
 439         }
 440         /* we're about to begin a new transaction here so mark the URB unfinished */
 441         urb_finished = 0;
 442
 443         /* every endpoint has a ed, locate and fill it */
 444         if (!(ed = ep_add_ed (dev, pipe))) {
 445                 err("sohci_submit_job: ENOMEM");
 446                 return -1;
 447         }
 448
 449         /* for the private part of the URB we need the number of TDs (size) */
 450         switch (usb_pipetype (pipe)) {
 451                 case PIPE_BULK: /* one TD for every 4096 Byte */
 452                         size = (transfer_len - 1) / 4096 + 1;
 453                         break;
 454                 case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
 455                         size = (transfer_len == 0)? 2:
 456                                                 (transfer_len - 1) / 4096 + 3;
 457                         break;
 458         }
 459
 460         if (size >= (N_URB_TD - 1)) {
 461                 err("need %d TDs, only have %d", size, N_URB_TD);
 462                 return -1;
 463         }
 464         purb_priv = &urb_priv;
 465         purb_priv->pipe = pipe;
 466
 467         /* fill the private part of the URB */
 468         purb_priv->length = size;
 469         purb_priv->ed = ed;
 470         purb_priv->actual_length = 0;
 471
 472         /* allocate the TDs */
 473         /* note that td[0] was allocated in ep_add_ed */
 474         for (i = 0; i < size; i++) {
 475                 purb_priv->td[i] = td_alloc (dev);
 476                 if (!purb_priv->td[i]) {
 477                         purb_priv->length = i;
 478                         urb_free_priv (purb_priv);
 479                         err("sohci_submit_job: ENOMEM");
 480                         return -1;
 481                 }
 482         }
 483
 484         if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
 485                 urb_free_priv (purb_priv);
 486                 err("sohci_submit_job: EINVAL");
 487                 return -1;
 488         }
 489
 490         /* link the ed into a chain if is not already */
 491         if (ed->state != ED_OPER)
 492                 ep_link (ohci, ed);
 493
 494         /* fill the TDs and link it to the ed */
 495         td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv, interval);
 496
 497         return 0;
 498 }
 499
 500 /*-------------------------------------------------------------------------*/
 501
 502 #ifdef DEBUG
 503 /* tell us the current USB frame number */
 504
 505 static int sohci_get_current_frame_number (struct usb_device *usb_dev)
 506 {
 507         ohci_t *ohci = &gohci;
 508
 509         return m16_swap (ohci->hcca->frame_no);
 510 }
 511 #endif
 512
 513 /*-------------------------------------------------------------------------*
 514  * ED handling functions
 515  *-------------------------------------------------------------------------*/
 516
 517 /* link an ed into one of the HC chains */
 518
 519 static int ep_link (ohci_t *ohci, ed_t *edi)
 520 {
 521         volatile ed_t *ed = edi;
 522
 523         ed->state = ED_OPER;
 524
 525         switch (ed->type) {
 526         case PIPE_CONTROL:
 527                 ed->hwNextED = 0;
 528                 if (ohci->ed_controltail == NULL) {
 529                         writel (ed, &ohci->regs->ed_controlhead);
 530                 } else {
 531                         ohci->ed_controltail->hwNextED = m32_swap ((unsigned long)ed);
 532                 }
 533                 ed->ed_prev = ohci->ed_controltail;
 534                 if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
 535                         !ohci->ed_rm_list[1] && !ohci->sleeping) {
 536                         ohci->hc_control |= OHCI_CTRL_CLE;
 537                         writel (ohci->hc_control, &ohci->regs->control);
 538                 }
 539                 ohci->ed_controltail = edi;
 540                 break;
 541
 542         case PIPE_BULK:
 543                 ed->hwNextED = 0;
 544                 if (ohci->ed_bulktail == NULL) {
 545                         writel (ed, &ohci->regs->ed_bulkhead);
 546                 } else {
 547                         ohci->ed_bulktail->hwNextED = m32_swap ((unsigned long)ed);
 548                 }
 549                 ed->ed_prev = ohci->ed_bulktail;
 550                 if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
 551                         !ohci->ed_rm_list[1] && !ohci->sleeping) {
 552                         ohci->hc_control |= OHCI_CTRL_BLE;
 553                         writel (ohci->hc_control, &ohci->regs->control);
 554                 }
 555                 ohci->ed_bulktail = edi;
 556                 break;
 557         }
 558         return 0;
 559 }
 560
 561 /*-------------------------------------------------------------------------*/
 562
 563 /* unlink an ed from one of the HC chains.
 564  * just the link to the ed is unlinked.
 565  * the link from the ed still points to another operational ed or 0
 566  * so the HC can eventually finish the processing of the unlinked ed */
 567
 568 static int ep_unlink (ohci_t *ohci, ed_t *edi)
 569 {
 570         volatile ed_t *ed = edi;
 571
 572         ed->hwINFO |= m32_swap (OHCI_ED_SKIP);
 573
 574         switch (ed->type) {
 575         case PIPE_CONTROL:
 576                 if (ed->ed_prev == NULL) {
 577                         if (!ed->hwNextED) {
 578                                 ohci->hc_control &= ~OHCI_CTRL_CLE;
 579                                 writel (ohci->hc_control, &ohci->regs->control);
 580                         }
 581                         writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_controlhead);
 582                 } else {
 583                         ed->ed_prev->hwNextED = ed->hwNextED;
 584                 }
 585                 if (ohci->ed_controltail == ed) {
 586                         ohci->ed_controltail = ed->ed_prev;
 587                 } else {
 588                         ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
 589                 }
 590                 break;
 591
 592         case PIPE_BULK:
 593                 if (ed->ed_prev == NULL) {
 594                         if (!ed->hwNextED) {
 595                                 ohci->hc_control &= ~OHCI_CTRL_BLE;
 596                                 writel (ohci->hc_control, &ohci->regs->control);
 597                         }
 598                         writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_bulkhead);
 599                 } else {
 600                         ed->ed_prev->hwNextED = ed->hwNextED;
 601                 }
 602                 if (ohci->ed_bulktail == ed) {
 603                         ohci->ed_bulktail = ed->ed_prev;
 604                 } else {
 605                         ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
 606                 }
 607                 break;
 608         }
 609         ed->state = ED_UNLINK;
 610         return 0;
 611 }
 612
 613
 614 /*-------------------------------------------------------------------------*/
 615
 616 /* add/reinit an endpoint; this should be done once at the
 617  * usb_set_configuration command, but the USB stack is a little bit
 618  * stateless so we do it at every transaction if the state of the ed
 619  * is ED_NEW then a dummy td is added and the state is changed to
 620  * ED_UNLINK in all other cases the state is left unchanged the ed
 621  * info fields are setted anyway even though most of them should not
 622  * change
 623  */
 624 static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe)
 625 {
 626         td_t *td;
 627         ed_t *ed_ret;
 628         volatile ed_t *ed;
 629
 630         ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint (pipe) << 1) |
 631                         (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))];
 632
 633         if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
 634                 err("ep_add_ed: pending delete");
 635                 /* pending delete request */
 636                 return NULL;
 637         }
 638
 639         if (ed->state == ED_NEW) {
 640                 ed->hwINFO = m32_swap (OHCI_ED_SKIP); /* skip ed */
 641                 /* dummy td; end of td list for ed */
 642                 td = td_alloc (usb_dev);
 643                 ed->hwTailP = m32_swap ((unsigned long)td);
 644                 ed->hwHeadP = ed->hwTailP;
 645                 ed->state = ED_UNLINK;
 646                 ed->type = usb_pipetype (pipe);
 647                 ohci_dev.ed_cnt++;
 648         }
 649
 650         ed->hwINFO = m32_swap (usb_pipedevice (pipe)
 651                         | usb_pipeendpoint (pipe) << 7
 652                         | (usb_pipeisoc (pipe)? 0x8000: 0)
 653                         | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000))
 654                         | usb_pipeslow (pipe) << 13
 655                         | usb_maxpacket (usb_dev, pipe) << 16);
 656
 657         return ed_ret;
 658 }
 659
 660 /*-------------------------------------------------------------------------*
 661  * TD handling functions
 662  *-------------------------------------------------------------------------*/
 663
 664 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
 665
 666 static void td_fill (ohci_t *ohci, unsigned int info,
 667         void *data, int len,
 668         struct usb_device *dev, int index, urb_priv_t *urb_priv)
 669 {
 670         volatile td_t  *td, *td_pt;
 671 #ifdef OHCI_FILL_TRACE
 672         int i;
 673 #endif
 674
 675         if (index > urb_priv->length) {
 676                 err("index > length");
 677                 return;
 678         }
 679         /* use this td as the next dummy */
 680         td_pt = urb_priv->td [index];
 681         td_pt->hwNextTD = 0;
 682
 683         /* fill the old dummy TD */
 684         td = urb_priv->td [index] = (td_t *)(m32_swap (urb_priv->ed->hwTailP) & ~0xf);
 685
 686         td->ed = urb_priv->ed;
 687         td->next_dl_td = NULL;
 688         td->index = index;
 689         td->data = (__u32)data;
 690 #ifdef OHCI_FILL_TRACE
 691         if ((usb_pipetype(urb_priv->pipe) == PIPE_BULK) && usb_pipeout(urb_priv->pipe)) {
 692                 for (i = 0; i < len; i++)
 693                 printf("td->data[%d] %#2x ",i, ((unsigned char *)td->data)[i]);
 694                 printf("\n");
 695         }
 696 #endif
 697         if (!len)
 698                 data = 0;
 699
 700         td->hwINFO = m32_swap (info);
 701         td->hwCBP = m32_swap ((unsigned long)data);
 702         if (data)
 703                 td->hwBE = m32_swap ((unsigned long)(data + len - 1));
 704         else
 705                 td->hwBE = 0;
 706         td->hwNextTD = m32_swap ((unsigned long)td_pt);
 707
 708         /* append to queue */
 709         td->ed->hwTailP = td->hwNextTD;
 710 }
 711
 712 /*-------------------------------------------------------------------------*/
 713
 714 /* prepare all TDs of a transfer */
 715
 716 static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer,
 717         int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval)
 718 {
 719         ohci_t *ohci = &gohci;
 720         int data_len = transfer_len;
 721         void *data;
 722         int cnt = 0;
 723         __u32 info = 0;
 724         unsigned int toggle = 0;
 725
 726         /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
 727         if(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
 728                 toggle = TD_T_TOGGLE;
 729         } else {
 730                 toggle = TD_T_DATA0;
 731                 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 1);
 732         }
 733         urb->td_cnt = 0;
 734         if (data_len)
 735                 data = buffer;
 736         else
 737                 data = 0;
 738
 739         switch (usb_pipetype (pipe)) {
 740         case PIPE_BULK:
 741                 info = usb_pipeout (pipe)?
 742                         TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
 743                 while(data_len > 4096) {
 744                         td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, dev, cnt, urb);
 745                         data += 4096; data_len -= 4096; cnt++;
 746                 }
 747                 info = usb_pipeout (pipe)?
 748                         TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
 749                 td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, dev, cnt, urb);
 750                 cnt++;
 751
 752                 if (!ohci->sleeping)
 753                         writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
 754                 break;
 755
 756         case PIPE_CONTROL:
 757                 info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
 758                 td_fill (ohci, info, setup, 8, dev, cnt++, urb);
 759                 if (data_len > 0) {
 760                         info = usb_pipeout (pipe)?
 761                                 TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
 762                         /* NOTE:  mishandles transfers >8K, some >4K */
 763                         td_fill (ohci, info, data, data_len, dev, cnt++, urb);
 764                 }
 765                 info = usb_pipeout (pipe)?
 766                         TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1;
 767                 td_fill (ohci, info, data, 0, dev, cnt++, urb);
 768                 if (!ohci->sleeping)
 769                         writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
 770                 break;
 771         }
 772         if (urb->length != cnt)
 773                 dbg("TD LENGTH %d != CNT %d", urb->length, cnt);
 774 }
 775
 776 /*-------------------------------------------------------------------------*
 777  * Done List handling functions
 778  *-------------------------------------------------------------------------*/
 779
 780
 781 /* calculate the transfer length and update the urb */
 782
 783 static void dl_transfer_length(td_t * td)
 784 {
 785         __u32 tdINFO, tdBE, tdCBP;
 786         urb_priv_t *lurb_priv = &urb_priv;
 787
 788         tdINFO = m32_swap (td->hwINFO);
 789         tdBE   = m32_swap (td->hwBE);
 790         tdCBP  = m32_swap (td->hwCBP);
 791
 792
 793         if (!(usb_pipetype (lurb_priv->pipe) == PIPE_CONTROL &&
 794             ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
 795                 if (tdBE != 0) {
 796                         if (td->hwCBP == 0)
 797                                 lurb_priv->actual_length += tdBE - td->data + 1;
 798                         else
 799                                 lurb_priv->actual_length += tdCBP - td->data;
 800                 }
 801         }
 802 }
 803
 804 /*-------------------------------------------------------------------------*/
 805
 806 /* replies to the request have to be on a FIFO basis so
 807  * we reverse the reversed done-list */
 808
 809 static td_t * dl_reverse_done_list (ohci_t *ohci)
 810 {
 811         __u32 td_list_hc;
 812         td_t *td_rev = NULL;
 813         td_t *td_list = NULL;
 814         urb_priv_t *lurb_priv = NULL;
 815
 816         td_list_hc = m32_swap (ohci->hcca->done_head) & 0xfffffff0;
 817         ohci->hcca->done_head = 0;
 818
 819         while (td_list_hc) {
 820                 td_list = (td_t *)td_list_hc;
 821
 822                 if (TD_CC_GET (m32_swap (td_list->hwINFO))) {
 823                         lurb_priv = &urb_priv;
 824                         dbg(" USB-error/status: %x : %p",
 825                                         TD_CC_GET (m32_swap (td_list->hwINFO)), td_list);
 826                         if (td_list->ed->hwHeadP & m32_swap (0x1)) {
 827                                 if (lurb_priv && ((td_list->index + 1) < lurb_priv->length)) {
 828                                         td_list->ed->hwHeadP =
 829                                                 (lurb_priv->td[lurb_priv->length - 1]->hwNextTD & m32_swap (0xfffffff0)) |
 830                                                                         (td_list->ed->hwHeadP & m32_swap (0x2));
 831                                         lurb_priv->td_cnt += lurb_priv->length - td_list->index - 1;
 832                                 } else
 833                                         td_list->ed->hwHeadP &= m32_swap (0xfffffff2);
 834                         }
 835 #ifdef CONFIG_MPC5200
 836                         td_list->hwNextTD = 0;
 837 #endif
 838                 }
 839
 840                 td_list->next_dl_td = td_rev;
 841                 td_rev = td_list;
 842                 td_list_hc = m32_swap (td_list->hwNextTD) & 0xfffffff0;
 843         }
 844         return td_list;
 845 }
 846
 847 /*-------------------------------------------------------------------------*/
 848
 849 /* td done list */
 850 static int dl_done_list (ohci_t *ohci, td_t *td_list)
 851 {
 852         td_t *td_list_next = NULL;
 853         ed_t *ed;
 854         int cc = 0;
 855         int stat = 0;
 856         /* urb_t *urb; */
 857         urb_priv_t *lurb_priv;
 858         __u32 tdINFO, edHeadP, edTailP;
 859
 860         while (td_list) {
 861                 td_list_next = td_list->next_dl_td;
 862
 863                 lurb_priv = &urb_priv;
 864                 tdINFO = m32_swap (td_list->hwINFO);
 865
 866                 ed = td_list->ed;
 867
 868                 dl_transfer_length(td_list);
 869
 870                 /* error code of transfer */
 871                 cc = TD_CC_GET (tdINFO);
 872                 if (cc != 0) {
 873                         dbg("ConditionCode %#x", cc);
 874                         stat = cc_to_error[cc];
 875                 }
 876
 877                 /* see if this done list makes for all TD's of current URB,
 878                  * and mark the URB finished if so */
 879                 if (++(lurb_priv->td_cnt) == lurb_priv->length) {
 880 #if 1
 881                         if ((ed->state & (ED_OPER | ED_UNLINK)) &&
 882                             (lurb_priv->state != URB_DEL))
 883 #else
 884                         if ((ed->state & (ED_OPER | ED_UNLINK)))
 885                                 urb_finished = 1;
 886                         else
 887                                 dbg("dl_done_list: strange.., ED state %x, ed->state\n");
 888                 } else
 889                         dbg("dl_done_list: processing TD %x, len %x\n", lurb_priv->td_cnt,
 890                                 lurb_priv->length);
 891 #endif
 892                 if (ed->state != ED_NEW) {
 893                         edHeadP = m32_swap (ed->hwHeadP) & 0xfffffff0;
 894                         edTailP = m32_swap (ed->hwTailP);
 895
 896                         /* unlink eds if they are not busy */
 897                         if ((edHeadP == edTailP) && (ed->state == ED_OPER))
 898                                 ep_unlink (ohci, ed);
 899                 }
 900
 901                 td_list = td_list_next;
 902         }
 903         return stat;
 904 }
 905
 906 /*-------------------------------------------------------------------------*
 907  * Virtual Root Hub
 908  *-------------------------------------------------------------------------*/
 909
 910 /* Device descriptor */
 911 static __u8 root_hub_dev_des[] =
 912 {
 913         0x12,       /*  __u8  bLength; */
 914         0x01,       /*  __u8  bDescriptorType; Device */
 915         0x10,       /*  __u16 bcdUSB; v1.1 */
 916         0x01,
 917         0x09,       /*  __u8  bDeviceClass; HUB_CLASSCODE */
 918         0x00,       /*  __u8  bDeviceSubClass; */
 919         0x00,       /*  __u8  bDeviceProtocol; */
 920         0x08,       /*  __u8  bMaxPacketSize0; 8 Bytes */
 921         0x00,       /*  __u16 idVendor; */
 922         0x00,
 923         0x00,       /*  __u16 idProduct; */
 924         0x00,
 925         0x00,       /*  __u16 bcdDevice; */
 926         0x00,
 927         0x00,       /*  __u8  iManufacturer; */
 928         0x01,       /*  __u8  iProduct; */
 929         0x00,       /*  __u8  iSerialNumber; */
 930         0x01        /*  __u8  bNumConfigurations; */
 931 };
 932
 933
 934 /* Configuration descriptor */
 935 static __u8 root_hub_config_des[] =
 936 {
 937         0x09,       /*  __u8  bLength; */
 938         0x02,       /*  __u8  bDescriptorType; Configuration */
 939         0x19,       /*  __u16 wTotalLength; */
 940         0x00,
 941         0x01,       /*  __u8  bNumInterfaces; */
 942         0x01,       /*  __u8  bConfigurationValue; */
 943         0x00,       /*  __u8  iConfiguration; */
 944         0x40,       /*  __u8  bmAttributes;
 945                  Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
 946         0x00,       /*  __u8  MaxPower; */
 947
 948         /* interface */
 949         0x09,       /*  __u8  if_bLength; */
 950         0x04,       /*  __u8  if_bDescriptorType; Interface */
 951         0x00,       /*  __u8  if_bInterfaceNumber; */
 952         0x00,       /*  __u8  if_bAlternateSetting; */
 953         0x01,       /*  __u8  if_bNumEndpoints; */
 954         0x09,       /*  __u8  if_bInterfaceClass; HUB_CLASSCODE */
 955         0x00,       /*  __u8  if_bInterfaceSubClass; */
 956         0x00,       /*  __u8  if_bInterfaceProtocol; */
 957         0x00,       /*  __u8  if_iInterface; */
 958
 959         /* endpoint */
 960         0x07,       /*  __u8  ep_bLength; */
 961         0x05,       /*  __u8  ep_bDescriptorType; Endpoint */
 962         0x81,       /*  __u8  ep_bEndpointAddress; IN Endpoint 1 */
 963         0x03,       /*  __u8  ep_bmAttributes; Interrupt */
 964         0x02,       /*  __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
 965         0x00,
 966         0xff        /*  __u8  ep_bInterval; 255 ms */
 967 };
 968
 969 static unsigned char root_hub_str_index0[] =
 970 {
 971         0x04,                   /*  __u8  bLength; */
 972         0x03,                   /*  __u8  bDescriptorType; String-descriptor */
 973         0x09,                   /*  __u8  lang ID */
 974         0x04,                   /*  __u8  lang ID */
 975 };
 976
 977 static unsigned char root_hub_str_index1[] =
 978 {
 979         28,                     /*  __u8  bLength; */
 980         0x03,                   /*  __u8  bDescriptorType; String-descriptor */
 981         'O',                    /*  __u8  Unicode */
 982         0,                              /*  __u8  Unicode */
 983         'H',                    /*  __u8  Unicode */
 984         0,                              /*  __u8  Unicode */
 985         'C',                    /*  __u8  Unicode */
 986         0,                              /*  __u8  Unicode */
 987         'I',                    /*  __u8  Unicode */
 988         0,                              /*  __u8  Unicode */
 989         ' ',                    /*  __u8  Unicode */
 990         0,                              /*  __u8  Unicode */
 991         'R',                    /*  __u8  Unicode */
 992         0,                              /*  __u8  Unicode */
 993         'o',                    /*  __u8  Unicode */
 994         0,                              /*  __u8  Unicode */
 995         'o',                    /*  __u8  Unicode */
 996         0,                              /*  __u8  Unicode */
 997         't',                    /*  __u8  Unicode */
 998         0,                              /*  __u8  Unicode */
 999         ' ',                    /*  __u8  Unicode */
1000         0,                              /*  __u8  Unicode */
1001         'H',                    /*  __u8  Unicode */
1002         0,                              /*  __u8  Unicode */
1003         'u',                    /*  __u8  Unicode */
1004         0,                              /*  __u8  Unicode */
1005         'b',                    /*  __u8  Unicode */
1006         0,                              /*  __u8  Unicode */
1007 };
1008
1009 /* Hub class-specific descriptor is constructed dynamically */
1010
1011
1012 /*-------------------------------------------------------------------------*/
1013
1014 #define OK(x)                   len = (x); break
1015 #ifdef DEBUG
1016 #define WR_RH_STAT(x)           {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);}
1017 #define WR_RH_PORTSTAT(x)       {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);}
1018 #else
1019 #define WR_RH_STAT(x)           writel((x), &gohci.regs->roothub.status)
1020 #define WR_RH_PORTSTAT(x)       writel((x), &gohci.regs->roothub.portstatus[wIndex-1])
1021 #endif
1022 #define RD_RH_STAT              roothub_status(&gohci)
1023 #define RD_RH_PORTSTAT          roothub_portstatus(&gohci,wIndex-1)
1024
1025 /* request to virtual root hub */
1026
1027 int rh_check_port_status(ohci_t *controller)
1028 {
1029         __u32 temp, ndp, i;
1030         int res;
1031
1032         res = -1;
1033         temp = roothub_a (controller);
1034         ndp = (temp & RH_A_NDP);
1035 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1036         ndp = (ndp == 2) ? 1:0;
1037 #endif
1038         for (i = 0; i < ndp; i++) {
1039                 temp = roothub_portstatus (controller, i);
1040                 /* check for a device disconnect */
1041                 if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
1042                         (RH_PS_PESC | RH_PS_CSC)) &&
1043                         ((temp & RH_PS_CCS) == 0)) {
1044                         res = i;
1045                         break;
1046                 }
1047         }
1048         return res;
1049 }
1050
1051 static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
1052                 void *buffer, int transfer_len, struct devrequest *cmd)
1053 {
1054         void * data = buffer;
1055         int leni = transfer_len;
1056         int len = 0;
1057         int stat = 0;
1058         __u32 datab[4];
1059         __u8 *data_buf = (__u8 *)datab;
1060         __u16 bmRType_bReq;
1061         __u16 wValue;
1062         __u16 wIndex;
1063         __u16 wLength;
1064
1065 #ifdef DEBUG
1066 urb_priv.actual_length = 0;
1067 pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
1068 #else
1069         wait_ms(1);
1070 #endif
1071         if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
1072                 info("Root-Hub submit IRQ: NOT implemented");
1073                 return 0;
1074         }
1075
1076         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
1077 #if defined(CONFIG_440EP) || defined(CONFIG_MPC5200)
1078         wValue        = __swap_16(cmd->value);
1079         wIndex        = __swap_16(cmd->index);
1080         wLength       = __swap_16(cmd->length);
1081 #else
1082         wValue        = m16_swap (cmd->value);
1083         wIndex        = m16_swap (cmd->index);
1084         wLength       = m16_swap (cmd->length);
1085 #endif /* CONFIG_440EP || CONFIG_MPC5200 */
1086
1087         info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
1088                 dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength);
1089
1090         switch (bmRType_bReq) {
1091         /* Request Destination:
1092            without flags: Device,
1093            RH_INTERFACE: interface,
1094            RH_ENDPOINT: endpoint,
1095            RH_CLASS means HUB here,
1096            RH_OTHER | RH_CLASS  almost ever means HUB_PORT here
1097         */
1098
1099 #if defined(CONFIG_440EP) || defined(CONFIG_MPC5200)
1100         case RH_GET_STATUS:
1101                         *(__u16 *) data_buf = __swap_16(1); OK (2);
1102         case RH_GET_STATUS | RH_INTERFACE:
1103                         *(__u16 *) data_buf = __swap_16(0); OK (2);
1104         case RH_GET_STATUS | RH_ENDPOINT:
1105                         *(__u16 *) data_buf = __swap_16(0); OK (2);
1106         case RH_GET_STATUS | RH_CLASS:
1107                         *(__u32 *) data_buf = __swap_32(
1108                                 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
1109                         OK (4);
1110         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1111                         *(__u32 *) data_buf = __swap_32(RD_RH_PORTSTAT); OK (4);
1112 #else
1113         case RH_GET_STATUS:
1114                         *(__u16 *) data_buf = m16_swap (1); OK (2);
1115         case RH_GET_STATUS | RH_INTERFACE:
1116                         *(__u16 *) data_buf = m16_swap (0); OK (2);
1117         case RH_GET_STATUS | RH_ENDPOINT:
1118                         *(__u16 *) data_buf = m16_swap (0); OK (2);
1119         case RH_GET_STATUS | RH_CLASS:
1120                         *(__u32 *) data_buf = m32_swap (
1121                                 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
1122                         OK (4);
1123         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1124                         *(__u32 *) data_buf = m32_swap (RD_RH_PORTSTAT); OK (4);
1125 #endif /* CONFIG_440EP || CONFIG_MPC5200 */
1126
1127         case RH_CLEAR_FEATURE | RH_ENDPOINT:
1128                 switch (wValue) {
1129                         case (RH_ENDPOINT_STALL): OK (0);
1130                 }
1131                 break;
1132
1133         case RH_CLEAR_FEATURE | RH_CLASS:
1134                 switch (wValue) {
1135                         case RH_C_HUB_LOCAL_POWER:
1136                                 OK(0);
1137                         case (RH_C_HUB_OVER_CURRENT):
1138                                         WR_RH_STAT(RH_HS_OCIC); OK (0);
1139                 }
1140                 break;
1141
1142         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
1143                 switch (wValue) {
1144                         case (RH_PORT_ENABLE):
1145                                         WR_RH_PORTSTAT (RH_PS_CCS ); OK (0);
1146                         case (RH_PORT_SUSPEND):
1147                                         WR_RH_PORTSTAT (RH_PS_POCI); OK (0);
1148                         case (RH_PORT_POWER):
1149                                         WR_RH_PORTSTAT (RH_PS_LSDA); OK (0);
1150                         case (RH_C_PORT_CONNECTION):
1151                                         WR_RH_PORTSTAT (RH_PS_CSC ); OK (0);
1152                         case (RH_C_PORT_ENABLE):
1153                                         WR_RH_PORTSTAT (RH_PS_PESC); OK (0);
1154                         case (RH_C_PORT_SUSPEND):
1155                                         WR_RH_PORTSTAT (RH_PS_PSSC); OK (0);
1156                         case (RH_C_PORT_OVER_CURRENT):
1157                                         WR_RH_PORTSTAT (RH_PS_OCIC); OK (0);
1158                         case (RH_C_PORT_RESET):
1159                                         WR_RH_PORTSTAT (RH_PS_PRSC); OK (0);
1160                 }
1161                 break;
1162
1163         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
1164                 switch (wValue) {
1165                         case (RH_PORT_SUSPEND):
1166                                         WR_RH_PORTSTAT (RH_PS_PSS ); OK (0);
1167                         case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
1168                                         if (RD_RH_PORTSTAT & RH_PS_CCS)
1169                                             WR_RH_PORTSTAT (RH_PS_PRS);
1170                                         OK (0);
1171                         case (RH_PORT_POWER):
1172                                         WR_RH_PORTSTAT (RH_PS_PPS );
1173                                         wait_ms(100);
1174                                         OK (0);
1175                         case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
1176                                         if (RD_RH_PORTSTAT & RH_PS_CCS)
1177                                             WR_RH_PORTSTAT (RH_PS_PES );
1178                                         OK (0);
1179                 }
1180                 break;
1181
1182         case RH_SET_ADDRESS: gohci.rh.devnum = wValue; OK(0);
1183
1184         case RH_GET_DESCRIPTOR:
1185                 switch ((wValue & 0xff00) >> 8) {
1186                         case (0x01): /* device descriptor */
1187                                 len = min_t(unsigned int,
1188                                           leni,
1189                                           min_t(unsigned int,
1190                                               sizeof (root_hub_dev_des),
1191                                               wLength));
1192                                 data_buf = root_hub_dev_des; OK(len);
1193                         case (0x02): /* configuration descriptor */
1194                                 len = min_t(unsigned int,
1195                                           leni,
1196                                           min_t(unsigned int,
1197                                               sizeof (root_hub_config_des),
1198                                               wLength));
1199                                 data_buf = root_hub_config_des; OK(len);
1200                         case (0x03): /* string descriptors */
1201                                 if(wValue==0x0300) {
1202                                         len = min_t(unsigned int,
1203                                                   leni,
1204                                                   min_t(unsigned int,
1205                                                       sizeof (root_hub_str_index0),
1206                                                       wLength));
1207                                         data_buf = root_hub_str_index0;
1208                                         OK(len);
1209                                 }
1210                                 if(wValue==0x0301) {
1211                                         len = min_t(unsigned int,
1212                                                   leni,
1213                                                   min_t(unsigned int,
1214                                                       sizeof (root_hub_str_index1),
1215                                                       wLength));
1216                                         data_buf = root_hub_str_index1;
1217                                         OK(len);
1218                         }
1219                         default:
1220                                 stat = USB_ST_STALLED;
1221                 }
1222                 break;
1223
1224         case RH_GET_DESCRIPTOR | RH_CLASS:
1225         {
1226                 __u32 temp = roothub_a (&gohci);
1227
1228                 data_buf [0] = 9;               /* min length; */
1229                 data_buf [1] = 0x29;
1230                 data_buf [2] = temp & RH_A_NDP;
1231 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1232                 data_buf [2] = (data_buf [2] == 2) ? 1:0;
1233 #endif
1234                 data_buf [3] = 0;
1235                 if (temp & RH_A_PSM)    /* per-port power switching? */
1236                         data_buf [3] |= 0x1;
1237                 if (temp & RH_A_NOCP)   /* no overcurrent reporting? */
1238                         data_buf [3] |= 0x10;
1239                 else if (temp & RH_A_OCPM)      /* per-port overcurrent reporting? */
1240                         data_buf [3] |= 0x8;
1241
1242                 /* corresponds to data_buf[4-7] */
1243                 datab [1] = 0;
1244                 data_buf [5] = (temp & RH_A_POTPGT) >> 24;
1245                 temp = roothub_b (&gohci);
1246                 data_buf [7] = temp & RH_B_DR;
1247                 if (data_buf [2] < 7) {
1248                         data_buf [8] = 0xff;
1249                 } else {
1250                         data_buf [0] += 2;
1251                         data_buf [8] = (temp & RH_B_DR) >> 8;
1252                         data_buf [10] = data_buf [9] = 0xff;
1253                 }
1254
1255                 len = min_t(unsigned int, leni,
1256                             min_t(unsigned int, data_buf [0], wLength));
1257                 OK (len);
1258         }
1259
1260         case RH_GET_CONFIGURATION:      *(__u8 *) data_buf = 0x01; OK (1);
1261
1262         case RH_SET_CONFIGURATION:      WR_RH_STAT (0x10000); OK (0);
1263
1264         default:
1265                 dbg ("unsupported root hub command");
1266                 stat = USB_ST_STALLED;
1267         }
1268
1269 #ifdef  DEBUG
1270         ohci_dump_roothub (&gohci, 1);
1271 #else
1272         wait_ms(1);
1273 #endif
1274
1275         len = min_t(int, len, leni);
1276         if (data != data_buf)
1277             memcpy (data, data_buf, len);
1278         dev->act_len = len;
1279         dev->status = stat;
1280
1281 #ifdef DEBUG
1282         if (transfer_len)
1283                 urb_priv.actual_length = transfer_len;
1284         pkt_print(dev, pipe, buffer, transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
1285 #else
1286         wait_ms(1);
1287 #endif
1288
1289         return stat;
1290 }
1291
1292 /*-------------------------------------------------------------------------*/
1293
1294 /* common code for handling submit messages - used for all but root hub */
1295 /* accesses. */
1296 int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1297                 int transfer_len, struct devrequest *setup, int interval)
1298 {
1299         int stat = 0;
1300         int maxsize = usb_maxpacket(dev, pipe);
1301         int timeout;
1302
1303         /* device pulled? Shortcut the action. */
1304         if (devgone == dev) {
1305                 dev->status = USB_ST_CRC_ERR;
1306                 return 0;
1307         }
1308
1309 #ifdef DEBUG
1310         urb_priv.actual_length = 0;
1311         pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1312 #else
1313         wait_ms(1);
1314 #endif
1315         if (!maxsize) {
1316                 err("submit_common_message: pipesize for pipe %lx is zero",
1317                         pipe);
1318                 return -1;
1319         }
1320
1321         if (sohci_submit_job(dev, pipe, buffer, transfer_len, setup, interval) < 0) {
1322                 err("sohci_submit_job failed");
1323                 return -1;
1324         }
1325
1326 #if 0
1327         wait_ms(10);
1328         /* ohci_dump_status(&gohci); */
1329 #endif
1330
1331         /* allow more time for a BULK device to react - some are slow */
1332 #define BULK_TO  5000   /* timeout in milliseconds */
1333         if (usb_pipetype (pipe) == PIPE_BULK)
1334                 timeout = BULK_TO;
1335         else
1336                 timeout = 100;
1337
1338         /* wait for it to complete */
1339         for (;;) {
1340                 /* check whether the controller is done */
1341                 stat = hc_interrupt();
1342                 if (stat < 0) {
1343                         stat = USB_ST_CRC_ERR;
1344                         break;
1345                 }
1346
1347                 /* NOTE: since we are not interrupt driven in U-Boot and always
1348                  * handle only one URB at a time, we cannot assume the
1349                  * transaction finished on the first successful return from
1350                  * hc_interrupt().. unless the flag for current URB is set,
1351                  * meaning that all TD's to/from device got actually
1352                  * transferred and processed. If the current URB is not
1353                  * finished we need to re-iterate this loop so as
1354                  * hc_interrupt() gets called again as there needs to be some
1355                  * more TD's to process still */
1356                 if ((stat >= 0) && (stat != 0xff) && (urb_finished)) {
1357                         /* 0xff is returned for an SF-interrupt */
1358                         break;
1359                 }
1360
1361                 if (--timeout) {
1362                         wait_ms(1);
1363                 } else {
1364                         err("CTL:TIMEOUT ");
1365                         dbg("submit_common_msg: TO status %x\n", stat);
1366                         stat = USB_ST_CRC_ERR;
1367                         urb_finished = 1;
1368                         stat = USB_ST_CRC_ERR;
1369                         break;
1370                 }
1371         }
1372
1373         dev->status = stat;
1374         dev->act_len = transfer_len;
1375
1376 #ifdef DEBUG
1377         pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)", usb_pipein(pipe));
1378 #else
1379         wait_ms(1);
1380 #endif
1381
1382         /* free TDs in urb_priv */
1383         urb_free_priv (&urb_priv);
1384         return 0;
1385 }
1386
1387 /* submit routines called from usb.c */
1388 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1389                 int transfer_len)
1390 {
1391         info("submit_bulk_msg");
1392         return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
1393 }
1394
1395 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1396                 int transfer_len, struct devrequest *setup)
1397 {
1398         int maxsize = usb_maxpacket(dev, pipe);
1399
1400         info("submit_control_msg");
1401 #ifdef DEBUG
1402         urb_priv.actual_length = 0;
1403         pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1404 #else
1405         wait_ms(1);
1406 #endif
1407         if (!maxsize) {
1408                 err("submit_control_message: pipesize for pipe %lx is zero",
1409                         pipe);
1410                 return -1;
1411         }
1412         if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
1413                 gohci.rh.dev = dev;
1414                 /* root hub - redirect */
1415                 return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
1416                         setup);
1417         }
1418
1419         return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
1420 }
1421
1422 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1423                 int transfer_len, int interval)
1424 {
1425         info("submit_int_msg");
1426         return -1;
1427 }
1428
1429 /*-------------------------------------------------------------------------*
1430  * HC functions
1431  *-------------------------------------------------------------------------*/
1432
1433 /* reset the HC and BUS */
1434
1435 static int hc_reset (ohci_t *ohci)
1436 {
1437         int timeout = 30;
1438         int smm_timeout = 50; /* 0,5 sec */
1439
1440         dbg("%s\n", __FUNCTION__);
1441
1442         if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
1443                 writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */
1444                 info("USB HC TakeOver from SMM");
1445                 while (readl (&ohci->regs->control) & OHCI_CTRL_IR) {
1446                         wait_ms (10);
1447                         if (--smm_timeout == 0) {
1448                                 err("USB HC TakeOver failed!");
1449                                 return -1;
1450                         }
1451                 }
1452         }
1453
1454         /* Disable HC interrupts */
1455         writel (OHCI_INTR_MIE, &ohci->regs->intrdisable);
1456
1457         dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;\n",
1458                 ohci->slot_name,
1459                 readl(&ohci->regs->control));
1460
1461         /* Reset USB (needed by some controllers) */
1462         ohci->hc_control = 0;
1463         writel (ohci->hc_control, &ohci->regs->control);
1464
1465         /* HC Reset requires max 10 us delay */
1466         writel (OHCI_HCR,  &ohci->regs->cmdstatus);
1467         while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
1468                 if (--timeout == 0) {
1469                         err("USB HC reset timed out!");
1470                         return -1;
1471                 }
1472                 udelay (1);
1473         }
1474         return 0;
1475 }
1476
1477 /*-------------------------------------------------------------------------*/
1478
1479 /* Start an OHCI controller, set the BUS operational
1480  * enable interrupts
1481  * connect the virtual root hub */
1482
1483 static int hc_start (ohci_t * ohci)
1484 {
1485         __u32 mask;
1486         unsigned int fminterval;
1487
1488         ohci->disabled = 1;
1489
1490         /* Tell the controller where the control and bulk lists are
1491          * The lists are empty now. */
1492
1493         writel (0, &ohci->regs->ed_controlhead);
1494         writel (0, &ohci->regs->ed_bulkhead);
1495
1496         writel ((__u32)ohci->hcca, &ohci->regs->hcca); /* a reset clears this */
1497
1498         fminterval = 0x2edf;
1499         writel ((fminterval * 9) / 10, &ohci->regs->periodicstart);
1500         fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
1501         writel (fminterval, &ohci->regs->fminterval);
1502         writel (0x628, &ohci->regs->lsthresh);
1503
1504         /* start controller operations */
1505         ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
1506         ohci->disabled = 0;
1507         writel (ohci->hc_control, &ohci->regs->control);
1508
1509         /* disable all interrupts */
1510         mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD |
1511                         OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
1512                         OHCI_INTR_OC | OHCI_INTR_MIE);
1513         writel (mask, &ohci->regs->intrdisable);
1514         /* clear all interrupts */
1515         mask &= ~OHCI_INTR_MIE;
1516         writel (mask, &ohci->regs->intrstatus);
1517         /* Choose the interrupts we care about now  - but w/o MIE */
1518         mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
1519         writel (mask, &ohci->regs->intrenable);
1520
1521 #ifdef  OHCI_USE_NPS
1522         /* required for AMD-756 and some Mac platforms */
1523         writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM,
1524                 &ohci->regs->roothub.a);
1525         writel (RH_HS_LPSC, &ohci->regs->roothub.status);
1526 #endif  /* OHCI_USE_NPS */
1527
1528 #define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);})
1529         /* POTPGT delay is bits 24-31, in 2 ms units. */
1530         mdelay ((roothub_a (ohci) >> 23) & 0x1fe);
1531
1532         /* connect the virtual root hub */
1533         ohci->rh.devnum = 0;
1534
1535         return 0;
1536 }
1537
1538 /*-------------------------------------------------------------------------*/
1539
1540 /* an interrupt happens */
1541
1542 static int hc_interrupt (void)
1543 {
1544         ohci_t *ohci = &gohci;
1545         struct ohci_regs *regs = ohci->regs;
1546         int ints;
1547         int stat = -1;
1548
1549         if ((ohci->hcca->done_head != 0) &&
1550             !(m32_swap (ohci->hcca->done_head) & 0x01)) {
1551                 ints =  OHCI_INTR_WDH;
1552         } else if ((ints = readl (&regs->intrstatus)) == ~(u32)0) {
1553                 ohci->disabled++;
1554                 err ("%s device removed!", ohci->slot_name);
1555                 return -1;
1556         } else if ((ints &= readl (&regs->intrenable)) == 0) {
1557                 dbg("hc_interrupt: returning..\n");
1558                 return 0xff;
1559         }
1560
1561         /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
1562
1563         if (ints & OHCI_INTR_RHSC) {
1564                 got_rhsc = 1;
1565                 stat = 0xff;
1566         }
1567
1568         if (ints & OHCI_INTR_UE) {
1569                 ohci->disabled++;
1570                 err ("OHCI Unrecoverable Error, controller usb-%s disabled",
1571                         ohci->slot_name);
1572                 /* e.g. due to PCI Master/Target Abort */
1573
1574 #ifdef  DEBUG
1575                 ohci_dump (ohci, 1);
1576 #else
1577         wait_ms(1);
1578 #endif
1579                 /* FIXME: be optimistic, hope that bug won't repeat often. */
1580                 /* Make some non-interrupt context restart the controller. */
1581                 /* Count and limit the retries though; either hardware or */
1582                 /* software errors can go forever... */
1583                 hc_reset (ohci);
1584                 return -1;
1585         }
1586
1587         if (ints & OHCI_INTR_WDH) {
1588                 wait_ms(1);
1589                 writel (OHCI_INTR_WDH, &regs->intrdisable);
1590                 stat = dl_done_list (&gohci, dl_reverse_done_list (&gohci));
1591                 writel (OHCI_INTR_WDH, &regs->intrenable);
1592         }
1593
1594         if (ints & OHCI_INTR_SO) {
1595                 dbg("USB Schedule overrun\n");
1596                 writel (OHCI_INTR_SO, &regs->intrenable);
1597                 stat = -1;
1598         }
1599
1600         /* FIXME:  this assumes SOF (1/ms) interrupts don't get lost... */
1601         if (ints & OHCI_INTR_SF) {
1602                 unsigned int frame = m16_swap (ohci->hcca->frame_no) & 1;
1603                 wait_ms(1);
1604                 writel (OHCI_INTR_SF, &regs->intrdisable);
1605                 if (ohci->ed_rm_list[frame] != NULL)
1606                         writel (OHCI_INTR_SF, &regs->intrenable);
1607                 stat = 0xff;
1608         }
1609
1610         writel (ints, &regs->intrstatus);
1611         return stat;
1612 }
1613
1614 /*-------------------------------------------------------------------------*/
1615
1616 /*-------------------------------------------------------------------------*/
1617
1618 /* De-allocate all resources.. */
1619
1620 static void hc_release_ohci (ohci_t *ohci)
1621 {
1622         dbg ("USB HC release ohci usb-%s", ohci->slot_name);
1623
1624         if (!ohci->disabled)
1625                 hc_reset (ohci);
1626 }
1627
1628 /*-------------------------------------------------------------------------*/
1629
1630 /*
1631  * low level initalisation routine, called from usb.c
1632  */
1633 static char ohci_inited = 0;
1634
1635 int usb_lowlevel_init(void)
1636 {
1637
1638 #ifdef CFG_USB_OHCI_CPU_INIT
1639         /* cpu dependant init */
1640         if(usb_cpu_init())
1641                 return -1;
1642 #endif
1643
1644 #ifdef CFG_USB_OHCI_BOARD_INIT
1645         /*  board dependant init */
1646         if(usb_board_init())
1647                 return -1;
1648 #endif
1649         memset (&gohci, 0, sizeof (ohci_t));
1650         memset (&urb_priv, 0, sizeof (urb_priv_t));
1651
1652         /* align the storage */
1653         if ((__u32)&ghcca[0] & 0xff) {
1654                 err("HCCA not aligned!!");
1655                 return -1;
1656         }
1657         phcca = &ghcca[0];
1658         info("aligned ghcca %p", phcca);
1659         memset(&ohci_dev, 0, sizeof(struct ohci_device));
1660         if ((__u32)&ohci_dev.ed[0] & 0x7) {
1661                 err("EDs not aligned!!");
1662                 return -1;
1663         }
1664         memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
1665         if ((__u32)gtd & 0x7) {
1666                 err("TDs not aligned!!");
1667                 return -1;
1668         }
1669         ptd = gtd;
1670         gohci.hcca = phcca;
1671         memset (phcca, 0, sizeof (struct ohci_hcca));
1672
1673         gohci.disabled = 1;
1674         gohci.sleeping = 0;
1675         gohci.irq = -1;
1676         gohci.regs = (struct ohci_regs *)CFG_USB_OHCI_REGS_BASE;
1677
1678         gohci.flags = 0;
1679         gohci.slot_name = CFG_USB_OHCI_SLOT_NAME;
1680
1681         if (hc_reset (&gohci) < 0) {
1682                 hc_release_ohci (&gohci);
1683                 err ("can't reset usb-%s", gohci.slot_name);
1684 #ifdef CFG_USB_OHCI_BOARD_INIT
1685                 /* board dependant cleanup */
1686                 usb_board_init_fail();
1687 #endif
1688
1689 #ifdef CFG_USB_OHCI_CPU_INIT
1690                 /* cpu dependant cleanup */
1691                 usb_cpu_init_fail();
1692 #endif
1693                 return -1;
1694         }
1695
1696         /* FIXME this is a second HC reset; why?? */
1697         /* writel(gohci.hc_control = OHCI_USB_RESET, &gohci.regs->control);
1698            wait_ms(10); */
1699         if (hc_start (&gohci) < 0) {
1700                 err ("can't start usb-%s", gohci.slot_name);
1701                 hc_release_ohci (&gohci);
1702                 /* Initialization failed */
1703 #ifdef CFG_USB_OHCI_BOARD_INIT
1704                 /* board dependant cleanup */
1705                 usb_board_stop();
1706 #endif
1707
1708 #ifdef CFG_USB_OHCI_CPU_INIT
1709                 /* cpu dependant cleanup */
1710                 usb_cpu_stop();
1711 #endif
1712                 return -1;
1713         }
1714
1715 #ifdef  DEBUG
1716         ohci_dump (&gohci, 1);
1717 #else
1718         wait_ms(1);
1719         urb_finished = 1;
1720 #endif
1721         ohci_inited = 1;
1722         return 0;
1723 }
1724
1725 int usb_lowlevel_stop(void)
1726 {
1727         /* this gets called really early - before the controller has */
1728         /* even been initialized! */
1729         if (!ohci_inited)
1730                 return 0;
1731         /* TODO release any interrupts, etc. */
1732         /* call hc_release_ohci() here ? */
1733         hc_reset (&gohci);
1734
1735 #ifdef CFG_USB_OHCI_BOARD_INIT
1736         /* board dependant cleanup */
1737         if(usb_board_stop())
1738                 return -1;
1739 #endif
1740
1741 #ifdef CFG_USB_OHCI_CPU_INIT
1742         /* cpu dependant cleanup */
1743         if(usb_cpu_stop())
1744                 return -1;
1745 #endif
1746
1747         return 0;
1748 }
1749 #endif /* CONFIG_USB_OHCI_NEW */