drivers/usb/usb_ohci.c

   1 /*
   2  * URB OHCI HCD (Host Controller Driver) for USB on the AT91RM9200 and PCI bus.
   3  *
   4  * Interrupt support is added. Now, it has been tested
   5  * on ULI1575 chip and works well with USB keyboard.
   6  *
   7  * (C) Copyright 2007
   8  * Zhang Wei, Freescale Semiconductor, Inc. <wei.zhang@freescale.com>
   9  *
  10  * (C) Copyright 2003
  11  * Gary Jennejohn, DENX Software Engineering <gj@denx.de>
  12  *
  13  * Note: Much of this code has been derived from Linux 2.4
  14  * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
  15  * (C) Copyright 2000-2002 David Brownell
  16  *
  17  * Modified for the MP2USB by (C) Copyright 2005 Eric Benard
  18  * ebenard@eukrea.com - based on s3c24x0's driver
  19  *
  20  * See file CREDITS for list of people who contributed to this
  21  * project.
  22  *
  23  * This program is free software; you can redistribute it and/or
  24  * modify it under the terms of the GNU General Public License as
  25  * published by the Free Software Foundation; either version 2 of
  26  * the License, or (at your option) any later version.
  27  *
  28  * This program is distributed in the hope that it will be useful,
  29  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  30  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  31  * GNU General Public License for more details.
  32  *
  33  * You should have received a copy of the GNU General Public License
  34  * along with this program; if not, write to the Free Software
  35  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  36  * MA 02111-1307 USA
  37  *
  38  */
  39 /*
  40  * IMPORTANT NOTES
  41  * 1 - Read doc/README.generic_usb_ohci
  42  * 2 - this driver is intended for use with USB Mass Storage Devices
  43  *     (BBB) and USB keyboard. There is NO support for Isochronous pipes!
  44  * 2 - when running on a PQFP208 AT91RM9200, define CONFIG_AT91C_PQFP_UHPBUG
  45  *     to activate workaround for bug #41 or this driver will NOT work!
  46  */
  47
  48 #include <common.h>
  49
  50 #ifdef CONFIG_USB_OHCI_NEW
  51
  52 #include <asm/byteorder.h>
  53
  54 #if defined(CONFIG_PCI_OHCI)
  55 # include <pci.h>
  56 #endif
  57
  58 #include <malloc.h>
  59 #include <usb.h>
  60 #include "usb_ohci.h"
  61
  62 #ifdef CONFIG_AT91RM9200
  63 #include <asm/arch/hardware.h>  /* needed for AT91_USB_HOST_BASE */
  64 #endif
  65
  66 #if defined(CONFIG_ARM920T) || \
  67     defined(CONFIG_S3C2400) || \
  68     defined(CONFIG_S3C2410) || \
  69     defined(CONFIG_440EP) || \
  70     defined(CONFIG_PCI_OHCI) || \
  71     defined(CONFIG_MPC5200) || \
  72     defined(CFG_OHCI_USE_NPS)
  73 # define OHCI_USE_NPS           /* force NoPowerSwitching mode */
  74 #endif
  75
  76 #undef OHCI_VERBOSE_DEBUG       /* not always helpful */
  77 #undef DEBUG
  78 #undef SHOW_INFO
  79 #undef OHCI_FILL_TRACE
  80
  81 /* For initializing controller (mask in an HCFS mode too) */
  82 #define OHCI_CONTROL_INIT \
  83         (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
  84
  85 /*
  86  * e.g. PCI controllers need this
  87  */
  88 #ifdef CFG_OHCI_SWAP_REG_ACCESS
  89 # define readl(a) __swap_32(*((vu_long *)(a)))
  90 # define writel(a, b) (*((vu_long *)(b)) = __swap_32((vu_long)a))
  91 #else
  92 # define readl(a) (*((vu_long *)(a)))
  93 # define writel(a, b) (*((vu_long *)(b)) = ((vu_long)a))
  94 #endif /* CFG_OHCI_SWAP_REG_ACCESS */
  95
  96 #define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
  97
  98 #ifdef CONFIG_PCI_OHCI
  99 static struct pci_device_id ohci_pci_ids[] = {
 100         {0x10b9, 0x5237},       /* ULI1575 PCI OHCI module ids */
 101         {0x1033, 0x0035},       /* NEC PCI OHCI module ids */
 102         {0x1131, 0x1561},       /* Philips 1561 PCI OHCI module ids */
 103         /* Please add supported PCI OHCI controller ids here */
 104         {0, 0}
 105 };
 106 #endif
 107
 108 #ifdef DEBUG
 109 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
 110 #else
 111 #define dbg(format, arg...) do {} while(0)
 112 #endif /* DEBUG */
 113 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
 114 #ifdef SHOW_INFO
 115 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
 116 #else
 117 #define info(format, arg...) do {} while(0)
 118 #endif
 119
 120 #ifdef CFG_OHCI_BE_CONTROLLER
 121 # define m16_swap(x) cpu_to_be16(x)
 122 # define m32_swap(x) cpu_to_be32(x)
 123 #else
 124 # define m16_swap(x) cpu_to_le16(x)
 125 # define m32_swap(x) cpu_to_le32(x)
 126 #endif /* CFG_OHCI_BE_CONTROLLER */
 127
 128 /* global ohci_t */
 129 static ohci_t gohci;
 130 /* this must be aligned to a 256 byte boundary */
 131 struct ohci_hcca ghcca[1];
 132 /* a pointer to the aligned storage */
 133 struct ohci_hcca *phcca;
 134 /* this allocates EDs for all possible endpoints */
 135 struct ohci_device ohci_dev;
 136 /* RHSC flag */
 137 int got_rhsc;
 138 /* device which was disconnected */
 139 struct usb_device *devgone;
 140
 141 /*-------------------------------------------------------------------------*/
 142
 143 /* AMD-756 (D2 rev) reports corrupt register contents in some cases.
 144  * The erratum (#4) description is incorrect.  AMD's workaround waits
 145  * till some bits (mostly reserved) are clear; ok for all revs.
 146  */
 147 #define OHCI_QUIRK_AMD756 0xabcd
 148 #define read_roothub(hc, register, mask) ({ \
 149         u32 temp = readl (&hc->regs->roothub.register); \
 150         if (hc->flags & OHCI_QUIRK_AMD756) \
 151                 while (temp & mask) \
 152                         temp = readl (&hc->regs->roothub.register); \
 153         temp; })
 154
 155 static u32 roothub_a (struct ohci *hc)
 156         { return read_roothub (hc, a, 0xfc0fe000); }
 157 static inline u32 roothub_b (struct ohci *hc)
 158         { return readl (&hc->regs->roothub.b); }
 159 static inline u32 roothub_status (struct ohci *hc)
 160         { return readl (&hc->regs->roothub.status); }
 161 static u32 roothub_portstatus (struct ohci *hc, int i)
 162         { return read_roothub (hc, portstatus [i], 0xffe0fce0); }
 163
 164 /* forward declaration */
 165 static int hc_interrupt (void);
 166 static void
 167 td_submit_job (struct usb_device * dev, unsigned long pipe, void * buffer,
 168         int transfer_len, struct devrequest * setup, urb_priv_t * urb, int interval);
 169
 170 /*-------------------------------------------------------------------------*
 171  * URB support functions
 172  *-------------------------------------------------------------------------*/
 173
 174 /* free HCD-private data associated with this URB */
 175
 176 static void urb_free_priv (urb_priv_t * urb)
 177 {
 178         int             i;
 179         int             last;
 180         struct td       * td;
 181
 182         last = urb->length - 1;
 183         if (last >= 0) {
 184                 for (i = 0; i <= last; i++) {
 185                         td = urb->td[i];
 186                         if (td) {
 187                                 td->usb_dev = NULL;
 188                                 urb->td[i] = NULL;
 189                         }
 190                 }
 191         }
 192         free(urb);
 193 }
 194
 195 /*-------------------------------------------------------------------------*/
 196
 197 #ifdef DEBUG
 198 static int sohci_get_current_frame_number (struct usb_device * dev);
 199
 200 /* debug| print the main components of an URB
 201  * small: 0) header + data packets 1) just header */
 202
 203 static void pkt_print (urb_priv_t *purb, struct usb_device * dev,
 204         unsigned long pipe, void * buffer,
 205         int transfer_len, struct devrequest * setup, char * str, int small)
 206 {
 207         dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
 208                         str,
 209                         sohci_get_current_frame_number (dev),
 210                         usb_pipedevice (pipe),
 211                         usb_pipeendpoint (pipe),
 212                         usb_pipeout (pipe)? 'O': 'I',
 213                         usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"):
 214                                 (usb_pipecontrol (pipe)? "CTRL": "BULK"),
 215                         (purb ? purb->actual_length : 0),
 216                         transfer_len, dev->status);
 217 #ifdef  OHCI_VERBOSE_DEBUG
 218         if (!small) {
 219                 int i, len;
 220
 221                 if (usb_pipecontrol (pipe)) {
 222                         printf (__FILE__ ": cmd(8):");
 223                         for (i = 0; i < 8 ; i++)
 224                                 printf (" %02x", ((__u8 *) setup) [i]);
 225                         printf ("\n");
 226                 }
 227                 if (transfer_len > 0 && buffer) {
 228                         printf (__FILE__ ": data(%d/%d):",
 229                                 (purb ? purb->actual_length : 0),
 230                                 transfer_len);
 231                         len = usb_pipeout (pipe)?
 232                                         transfer_len:
 233                                         (purb ? purb->actual_length : 0);
 234                         for (i = 0; i < 16 && i < len; i++)
 235                                 printf (" %02x", ((__u8 *) buffer) [i]);
 236                         printf ("%s\n", i < len? "...": "");
 237                 }
 238         }
 239 #endif
 240 }
 241
 242 /* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
 243 void ep_print_int_eds (ohci_t *ohci, char * str) {
 244         int i, j;
 245          __u32 * ed_p;
 246         for (i= 0; i < 32; i++) {
 247                 j = 5;
 248                 ed_p = &(ohci->hcca->int_table [i]);
 249                 if (*ed_p == 0)
 250                     continue;
 251                 printf (__FILE__ ": %s branch int %2d(%2x):", str, i, i);
 252                 while (*ed_p != 0 && j--) {
 253                         ed_t *ed = (ed_t *)m32_swap(ed_p);
 254                         printf (" ed: %4x;", ed->hwINFO);
 255                         ed_p = &ed->hwNextED;
 256                 }
 257                 printf ("\n");
 258         }
 259 }
 260
 261 static void ohci_dump_intr_mask (char *label, __u32 mask)
 262 {
 263         dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
 264                 label,
 265                 mask,
 266                 (mask & OHCI_INTR_MIE) ? " MIE" : "",
 267                 (mask & OHCI_INTR_OC) ? " OC" : "",
 268                 (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
 269                 (mask & OHCI_INTR_FNO) ? " FNO" : "",
 270                 (mask & OHCI_INTR_UE) ? " UE" : "",
 271                 (mask & OHCI_INTR_RD) ? " RD" : "",
 272                 (mask & OHCI_INTR_SF) ? " SF" : "",
 273                 (mask & OHCI_INTR_WDH) ? " WDH" : "",
 274                 (mask & OHCI_INTR_SO) ? " SO" : ""
 275                 );
 276 }
 277
 278 static void maybe_print_eds (char *label, __u32 value)
 279 {
 280         ed_t *edp = (ed_t *)value;
 281
 282         if (value) {
 283                 dbg ("%s %08x", label, value);
 284                 dbg ("%08x", edp->hwINFO);
 285                 dbg ("%08x", edp->hwTailP);
 286                 dbg ("%08x", edp->hwHeadP);
 287                 dbg ("%08x", edp->hwNextED);
 288         }
 289 }
 290
 291 static char * hcfs2string (int state)
 292 {
 293         switch (state) {
 294                 case OHCI_USB_RESET:    return "reset";
 295                 case OHCI_USB_RESUME:   return "resume";
 296                 case OHCI_USB_OPER:     return "operational";
 297                 case OHCI_USB_SUSPEND:  return "suspend";
 298         }
 299         return "?";
 300 }
 301
 302 /* dump control and status registers */
 303 static void ohci_dump_status (ohci_t *controller)
 304 {
 305         struct ohci_regs        *regs = controller->regs;
 306         __u32                   temp;
 307
 308         temp = readl (&regs->revision) & 0xff;
 309         if (temp != 0x10)
 310                 dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f));
 311
 312         temp = readl (&regs->control);
 313         dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
 314                 (temp & OHCI_CTRL_RWE) ? " RWE" : "",
 315                 (temp & OHCI_CTRL_RWC) ? " RWC" : "",
 316                 (temp & OHCI_CTRL_IR) ? " IR" : "",
 317                 hcfs2string (temp & OHCI_CTRL_HCFS),
 318                 (temp & OHCI_CTRL_BLE) ? " BLE" : "",
 319                 (temp & OHCI_CTRL_CLE) ? " CLE" : "",
 320                 (temp & OHCI_CTRL_IE) ? " IE" : "",
 321                 (temp & OHCI_CTRL_PLE) ? " PLE" : "",
 322                 temp & OHCI_CTRL_CBSR
 323                 );
 324
 325         temp = readl (&regs->cmdstatus);
 326         dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
 327                 (temp & OHCI_SOC) >> 16,
 328                 (temp & OHCI_OCR) ? " OCR" : "",
 329                 (temp & OHCI_BLF) ? " BLF" : "",
 330                 (temp & OHCI_CLF) ? " CLF" : "",
 331                 (temp & OHCI_HCR) ? " HCR" : ""
 332                 );
 333
 334         ohci_dump_intr_mask ("intrstatus", readl (&regs->intrstatus));
 335         ohci_dump_intr_mask ("intrenable", readl (&regs->intrenable));
 336
 337         maybe_print_eds ("ed_periodcurrent", readl (&regs->ed_periodcurrent));
 338
 339         maybe_print_eds ("ed_controlhead", readl (&regs->ed_controlhead));
 340         maybe_print_eds ("ed_controlcurrent", readl (&regs->ed_controlcurrent));
 341
 342         maybe_print_eds ("ed_bulkhead", readl (&regs->ed_bulkhead));
 343         maybe_print_eds ("ed_bulkcurrent", readl (&regs->ed_bulkcurrent));
 344
 345         maybe_print_eds ("donehead", readl (&regs->donehead));
 346 }
 347
 348 static void ohci_dump_roothub (ohci_t *controller, int verbose)
 349 {
 350         __u32                   temp, ndp, i;
 351
 352         temp = roothub_a (controller);
 353         ndp = (temp & RH_A_NDP);
 354 #ifdef CONFIG_AT91C_PQFP_UHPBUG
 355         ndp = (ndp == 2) ? 1:0;
 356 #endif
 357         if (verbose) {
 358                 dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
 359                         ((temp & RH_A_POTPGT) >> 24) & 0xff,
 360                         (temp & RH_A_NOCP) ? " NOCP" : "",
 361                         (temp & RH_A_OCPM) ? " OCPM" : "",
 362                         (temp & RH_A_DT) ? " DT" : "",
 363                         (temp & RH_A_NPS) ? " NPS" : "",
 364                         (temp & RH_A_PSM) ? " PSM" : "",
 365                         ndp
 366                         );
 367                 temp = roothub_b (controller);
 368                 dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
 369                         temp,
 370                         (temp & RH_B_PPCM) >> 16,
 371                         (temp & RH_B_DR)
 372                         );
 373                 temp = roothub_status (controller);
 374                 dbg ("roothub.status: %08x%s%s%s%s%s%s",
 375                         temp,
 376                         (temp & RH_HS_CRWE) ? " CRWE" : "",
 377                         (temp & RH_HS_OCIC) ? " OCIC" : "",
 378                         (temp & RH_HS_LPSC) ? " LPSC" : "",
 379                         (temp & RH_HS_DRWE) ? " DRWE" : "",
 380                         (temp & RH_HS_OCI) ? " OCI" : "",
 381                         (temp & RH_HS_LPS) ? " LPS" : ""
 382                         );
 383         }
 384
 385         for (i = 0; i < ndp; i++) {
 386                 temp = roothub_portstatus (controller, i);
 387                 dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
 388                         i,
 389                         temp,
 390                         (temp & RH_PS_PRSC) ? " PRSC" : "",
 391                         (temp & RH_PS_OCIC) ? " OCIC" : "",
 392                         (temp & RH_PS_PSSC) ? " PSSC" : "",
 393                         (temp & RH_PS_PESC) ? " PESC" : "",
 394                         (temp & RH_PS_CSC) ? " CSC" : "",
 395
 396                         (temp & RH_PS_LSDA) ? " LSDA" : "",
 397                         (temp & RH_PS_PPS) ? " PPS" : "",
 398                         (temp & RH_PS_PRS) ? " PRS" : "",
 399                         (temp & RH_PS_POCI) ? " POCI" : "",
 400                         (temp & RH_PS_PSS) ? " PSS" : "",
 401
 402                         (temp & RH_PS_PES) ? " PES" : "",
 403                         (temp & RH_PS_CCS) ? " CCS" : ""
 404                         );
 405         }
 406 }
 407
 408 static void ohci_dump (ohci_t *controller, int verbose)
 409 {
 410         dbg ("OHCI controller usb-%s state", controller->slot_name);
 411
 412         /* dumps some of the state we know about */
 413         ohci_dump_status (controller);
 414         if (verbose)
 415                 ep_print_int_eds (controller, "hcca");
 416         dbg ("hcca frame #%04x", controller->hcca->frame_no);
 417         ohci_dump_roothub (controller, 1);
 418 }
 419 #endif /* DEBUG */
 420
 421 /*-------------------------------------------------------------------------*
 422  * Interface functions (URB)
 423  *-------------------------------------------------------------------------*/
 424
 425 /* get a transfer request */
 426
 427 int sohci_submit_job(urb_priv_t *urb, struct devrequest *setup)
 428 {
 429         ohci_t *ohci;
 430         ed_t * ed;
 431         urb_priv_t *purb_priv = urb;
 432         int i, size = 0;
 433         struct usb_device *dev = urb->dev;
 434         unsigned long pipe = urb->pipe;
 435         void *buffer = urb->transfer_buffer;
 436         int transfer_len = urb->transfer_buffer_length;
 437         int interval = urb->interval;
 438
 439         ohci = &gohci;
 440
 441         /* when controller's hung, permit only roothub cleanup attempts
 442          * such as powering down ports */
 443         if (ohci->disabled) {
 444                 err("sohci_submit_job: EPIPE");
 445                 return -1;
 446         }
 447
 448         /* we're about to begin a new transaction here so mark the URB unfinished */
 449         urb->finished = 0;
 450
 451         /* every endpoint has a ed, locate and fill it */
 452         if (!(ed = ep_add_ed (dev, pipe, interval, 1))) {
 453                 err("sohci_submit_job: ENOMEM");
 454                 return -1;
 455         }
 456
 457         /* for the private part of the URB we need the number of TDs (size) */
 458         switch (usb_pipetype (pipe)) {
 459                 case PIPE_BULK: /* one TD for every 4096 Byte */
 460                         size = (transfer_len - 1) / 4096 + 1;
 461                         break;
 462                 case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
 463                         size = (transfer_len == 0)? 2:
 464                                                 (transfer_len - 1) / 4096 + 3;
 465                         break;
 466                 case PIPE_INTERRUPT: /* 1 TD */
 467                         size = 1;
 468                         break;
 469         }
 470
 471         ed->purb = urb;
 472
 473         if (size >= (N_URB_TD - 1)) {
 474                 err("need %d TDs, only have %d", size, N_URB_TD);
 475                 return -1;
 476         }
 477         purb_priv->pipe = pipe;
 478
 479         /* fill the private part of the URB */
 480         purb_priv->length = size;
 481         purb_priv->ed = ed;
 482         purb_priv->actual_length = 0;
 483
 484         /* allocate the TDs */
 485         /* note that td[0] was allocated in ep_add_ed */
 486         for (i = 0; i < size; i++) {
 487                 purb_priv->td[i] = td_alloc (dev);
 488                 if (!purb_priv->td[i]) {
 489                         purb_priv->length = i;
 490                         urb_free_priv (purb_priv);
 491                         err("sohci_submit_job: ENOMEM");
 492                         return -1;
 493                 }
 494         }
 495
 496         if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
 497                 urb_free_priv (purb_priv);
 498                 err("sohci_submit_job: EINVAL");
 499                 return -1;
 500         }
 501
 502         /* link the ed into a chain if is not already */
 503         if (ed->state != ED_OPER)
 504                 ep_link (ohci, ed);
 505
 506         /* fill the TDs and link it to the ed */
 507         td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv, interval);
 508
 509         return 0;
 510 }
 511
 512 static inline int sohci_return_job(struct ohci *hc, urb_priv_t *urb)
 513 {
 514         struct ohci_regs *regs = hc->regs;
 515
 516         switch (usb_pipetype (urb->pipe)) {
 517         case PIPE_INTERRUPT:
 518                 /* implicitly requeued */
 519                 if (urb->dev->irq_handle &&
 520                                 (urb->dev->irq_act_len = urb->actual_length)) {
 521                         writel (OHCI_INTR_WDH, &regs->intrenable);
 522                         readl (&regs->intrenable); /* PCI posting flush */
 523                         urb->dev->irq_handle(urb->dev);
 524                         writel (OHCI_INTR_WDH, &regs->intrdisable);
 525                         readl (&regs->intrdisable); /* PCI posting flush */
 526                 }
 527                 urb->actual_length = 0;
 528                 td_submit_job (
 529                                 urb->dev,
 530                                 urb->pipe,
 531                                 urb->transfer_buffer,
 532                                 urb->transfer_buffer_length,
 533                                 NULL,
 534                                 urb,
 535                                 urb->interval);
 536                 break;
 537         case PIPE_CONTROL:
 538         case PIPE_BULK:
 539                 break;
 540         default:
 541                 return 0;
 542         }
 543         return 1;
 544 }
 545
 546 /*-------------------------------------------------------------------------*/
 547
 548 #ifdef DEBUG
 549 /* tell us the current USB frame number */
 550
 551 static int sohci_get_current_frame_number (struct usb_device *usb_dev)
 552 {
 553         ohci_t *ohci = &gohci;
 554
 555         return m16_swap (ohci->hcca->frame_no);
 556 }
 557 #endif
 558
 559 /*-------------------------------------------------------------------------*
 560  * ED handling functions
 561  *-------------------------------------------------------------------------*/
 562
 563 /* search for the right branch to insert an interrupt ed into the int tree
 564  * do some load ballancing;
 565  * returns the branch and
 566  * sets the interval to interval = 2^integer (ld (interval)) */
 567
 568 static int ep_int_ballance (ohci_t * ohci, int interval, int load)
 569 {
 570         int i, branch = 0;
 571
 572         /* search for the least loaded interrupt endpoint
 573          * branch of all 32 branches
 574          */
 575         for (i = 0; i < 32; i++)
 576                 if (ohci->ohci_int_load [branch] > ohci->ohci_int_load [i])
 577                         branch = i;
 578
 579         branch = branch % interval;
 580         for (i = branch; i < 32; i += interval)
 581                 ohci->ohci_int_load [i] += load;
 582
 583         return branch;
 584 }
 585
 586 /*-------------------------------------------------------------------------*/
 587
 588 /*  2^int( ld (inter)) */
 589
 590 static int ep_2_n_interval (int inter)
 591 {
 592         int i;
 593         for (i = 0; ((inter >> i) > 1 ) && (i < 5); i++);
 594         return 1 << i;
 595 }
 596
 597 /*-------------------------------------------------------------------------*/
 598
 599 /* the int tree is a binary tree
 600  * in order to process it sequentially the indexes of the branches have to be mapped
 601  * the mapping reverses the bits of a word of num_bits length */
 602
 603 static int ep_rev (int num_bits, int word)
 604 {
 605         int i, wout = 0;
 606
 607         for (i = 0; i < num_bits; i++)
 608                 wout |= (((word >> i) & 1) << (num_bits - i - 1));
 609         return wout;
 610 }
 611
 612 /*-------------------------------------------------------------------------*
 613  * ED handling functions
 614  *-------------------------------------------------------------------------*/
 615
 616 /* link an ed into one of the HC chains */
 617
 618 static int ep_link (ohci_t *ohci, ed_t *edi)
 619 {
 620         volatile ed_t *ed = edi;
 621         int int_branch;
 622         int i;
 623         int inter;
 624         int interval;
 625         int load;
 626         __u32 * ed_p;
 627
 628         ed->state = ED_OPER;
 629         ed->int_interval = 0;
 630
 631         switch (ed->type) {
 632         case PIPE_CONTROL:
 633                 ed->hwNextED = 0;
 634                 if (ohci->ed_controltail == NULL) {
 635                         writel (ed, &ohci->regs->ed_controlhead);
 636                 } else {
 637                         ohci->ed_controltail->hwNextED = m32_swap ((unsigned long)ed);
 638                 }
 639                 ed->ed_prev = ohci->ed_controltail;
 640                 if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
 641                         !ohci->ed_rm_list[1] && !ohci->sleeping) {
 642                         ohci->hc_control |= OHCI_CTRL_CLE;
 643                         writel (ohci->hc_control, &ohci->regs->control);
 644                 }
 645                 ohci->ed_controltail = edi;
 646                 break;
 647
 648         case PIPE_BULK:
 649                 ed->hwNextED = 0;
 650                 if (ohci->ed_bulktail == NULL) {
 651                         writel (ed, &ohci->regs->ed_bulkhead);
 652                 } else {
 653                         ohci->ed_bulktail->hwNextED = m32_swap ((unsigned long)ed);
 654                 }
 655                 ed->ed_prev = ohci->ed_bulktail;
 656                 if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
 657                         !ohci->ed_rm_list[1] && !ohci->sleeping) {
 658                         ohci->hc_control |= OHCI_CTRL_BLE;
 659                         writel (ohci->hc_control, &ohci->regs->control);
 660                 }
 661                 ohci->ed_bulktail = edi;
 662                 break;
 663
 664         case PIPE_INTERRUPT:
 665                 load = ed->int_load;
 666                 interval = ep_2_n_interval (ed->int_period);
 667                 ed->int_interval = interval;
 668                 int_branch = ep_int_ballance (ohci, interval, load);
 669                 ed->int_branch = int_branch;
 670
 671                 for (i = 0; i < ep_rev (6, interval); i += inter) {
 672                         inter = 1;
 673                         for (ed_p = &(ohci->hcca->int_table[ep_rev (5, i) + int_branch]);
 674                                 (*ed_p != 0) && (((ed_t *)ed_p)->int_interval >= interval);
 675                                 ed_p = &(((ed_t *)ed_p)->hwNextED))
 676                                         inter = ep_rev (6, ((ed_t *)ed_p)->int_interval);
 677                         ed->hwNextED = *ed_p;
 678                         *ed_p = m32_swap((unsigned long)ed);
 679                 }
 680                 break;
 681         }
 682         return 0;
 683 }
 684
 685 /*-------------------------------------------------------------------------*/
 686
 687 /* scan the periodic table to find and unlink this ED */
 688 static void periodic_unlink ( struct ohci *ohci, volatile struct ed *ed,
 689                 unsigned index, unsigned period)
 690 {
 691         for (; index < NUM_INTS; index += period) {
 692                 __u32   *ed_p = &ohci->hcca->int_table [index];
 693
 694                 /* ED might have been unlinked through another path */
 695                 while (*ed_p != 0) {
 696                         if (((struct ed *)m32_swap ((unsigned long)ed_p)) == ed) {
 697                                 *ed_p = ed->hwNextED;
 698                                 break;
 699                         }
 700                         ed_p = & (((struct ed *)m32_swap ((unsigned long)ed_p))->hwNextED);
 701                 }
 702         }
 703 }
 704
 705 /* unlink an ed from one of the HC chains.
 706  * just the link to the ed is unlinked.
 707  * the link from the ed still points to another operational ed or 0
 708  * so the HC can eventually finish the processing of the unlinked ed */
 709
 710 static int ep_unlink (ohci_t *ohci, ed_t *edi)
 711 {
 712         volatile ed_t *ed = edi;
 713         int i;
 714
 715         ed->hwINFO |= m32_swap (OHCI_ED_SKIP);
 716
 717         switch (ed->type) {
 718         case PIPE_CONTROL:
 719                 if (ed->ed_prev == NULL) {
 720                         if (!ed->hwNextED) {
 721                                 ohci->hc_control &= ~OHCI_CTRL_CLE;
 722                                 writel (ohci->hc_control, &ohci->regs->control);
 723                         }
 724                         writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_controlhead);
 725                 } else {
 726                         ed->ed_prev->hwNextED = ed->hwNextED;
 727                 }
 728                 if (ohci->ed_controltail == ed) {
 729                         ohci->ed_controltail = ed->ed_prev;
 730                 } else {
 731                         ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
 732                 }
 733                 break;
 734
 735         case PIPE_BULK:
 736                 if (ed->ed_prev == NULL) {
 737                         if (!ed->hwNextED) {
 738                                 ohci->hc_control &= ~OHCI_CTRL_BLE;
 739                                 writel (ohci->hc_control, &ohci->regs->control);
 740                         }
 741                         writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_bulkhead);
 742                 } else {
 743                         ed->ed_prev->hwNextED = ed->hwNextED;
 744                 }
 745                 if (ohci->ed_bulktail == ed) {
 746                         ohci->ed_bulktail = ed->ed_prev;
 747                 } else {
 748                         ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
 749                 }
 750                 break;
 751
 752         case PIPE_INTERRUPT:
 753                 periodic_unlink (ohci, ed, 0, 1);
 754                 for (i = ed->int_branch; i < 32; i += ed->int_interval)
 755                     ohci->ohci_int_load[i] -= ed->int_load;
 756                 break;
 757         }
 758         ed->state = ED_UNLINK;
 759         return 0;
 760 }
 761
 762 /*-------------------------------------------------------------------------*/
 763
 764 /* add/reinit an endpoint; this should be done once at the
 765  * usb_set_configuration command, but the USB stack is a little bit
 766  * stateless so we do it at every transaction if the state of the ed
 767  * is ED_NEW then a dummy td is added and the state is changed to
 768  * ED_UNLINK in all other cases the state is left unchanged the ed
 769  * info fields are setted anyway even though most of them should not
 770  * change
 771  */
 772 static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe,
 773                 int interval, int load)
 774 {
 775         td_t *td;
 776         ed_t *ed_ret;
 777         volatile ed_t *ed;
 778
 779         ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint (pipe) << 1) |
 780                         (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))];
 781
 782         if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
 783                 err("ep_add_ed: pending delete");
 784                 /* pending delete request */
 785                 return NULL;
 786         }
 787
 788         if (ed->state == ED_NEW) {
 789                 ed->hwINFO = m32_swap (OHCI_ED_SKIP); /* skip ed */
 790                 /* dummy td; end of td list for ed */
 791                 td = td_alloc (usb_dev);
 792                 ed->hwTailP = m32_swap ((unsigned long)td);
 793                 ed->hwHeadP = ed->hwTailP;
 794                 ed->state = ED_UNLINK;
 795                 ed->type = usb_pipetype (pipe);
 796                 ohci_dev.ed_cnt++;
 797         }
 798
 799         ed->hwINFO = m32_swap (usb_pipedevice (pipe)
 800                         | usb_pipeendpoint (pipe) << 7
 801                         | (usb_pipeisoc (pipe)? 0x8000: 0)
 802                         | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000))
 803                         | usb_pipeslow (pipe) << 13
 804                         | usb_maxpacket (usb_dev, pipe) << 16);
 805
 806         if (ed->type == PIPE_INTERRUPT && ed->state == ED_UNLINK) {
 807                 ed->int_period = interval;
 808                 ed->int_load = load;
 809         }
 810
 811         return ed_ret;
 812 }
 813
 814 /*-------------------------------------------------------------------------*
 815  * TD handling functions
 816  *-------------------------------------------------------------------------*/
 817
 818 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
 819
 820 static void td_fill (ohci_t *ohci, unsigned int info,
 821         void *data, int len,
 822         struct usb_device *dev, int index, urb_priv_t *urb_priv)
 823 {
 824         volatile td_t  *td, *td_pt;
 825 #ifdef OHCI_FILL_TRACE
 826         int i;
 827 #endif
 828
 829         if (index > urb_priv->length) {
 830                 err("index > length");
 831                 return;
 832         }
 833         /* use this td as the next dummy */
 834         td_pt = urb_priv->td [index];
 835         td_pt->hwNextTD = 0;
 836
 837         /* fill the old dummy TD */
 838         td = urb_priv->td [index] = (td_t *)(m32_swap (urb_priv->ed->hwTailP) & ~0xf);
 839
 840         td->ed = urb_priv->ed;
 841         td->next_dl_td = NULL;
 842         td->index = index;
 843         td->data = (__u32)data;
 844 #ifdef OHCI_FILL_TRACE
 845         if ((usb_pipetype(urb_priv->pipe) == PIPE_BULK) && usb_pipeout(urb_priv->pipe)) {
 846                 for (i = 0; i < len; i++)
 847                 printf("td->data[%d] %#2x ",i, ((unsigned char *)td->data)[i]);
 848                 printf("\n");
 849         }
 850 #endif
 851         if (!len)
 852                 data = 0;
 853
 854         td->hwINFO = m32_swap (info);
 855         td->hwCBP = m32_swap ((unsigned long)data);
 856         if (data)
 857                 td->hwBE = m32_swap ((unsigned long)(data + len - 1));
 858         else
 859                 td->hwBE = 0;
 860         td->hwNextTD = m32_swap ((unsigned long)td_pt);
 861
 862         /* append to queue */
 863         td->ed->hwTailP = td->hwNextTD;
 864 }
 865
 866 /*-------------------------------------------------------------------------*/
 867
 868 /* prepare all TDs of a transfer */
 869
 870 static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer,
 871         int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval)
 872 {
 873         ohci_t *ohci = &gohci;
 874         int data_len = transfer_len;
 875         void *data;
 876         int cnt = 0;
 877         __u32 info = 0;
 878         unsigned int toggle = 0;
 879
 880         /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
 881         if(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
 882                 toggle = TD_T_TOGGLE;
 883         } else {
 884                 toggle = TD_T_DATA0;
 885                 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 1);
 886         }
 887         urb->td_cnt = 0;
 888         if (data_len)
 889                 data = buffer;
 890         else
 891                 data = 0;
 892
 893         switch (usb_pipetype (pipe)) {
 894         case PIPE_BULK:
 895                 info = usb_pipeout (pipe)?
 896                         TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
 897                 while(data_len > 4096) {
 898                         td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, dev, cnt, urb);
 899                         data += 4096; data_len -= 4096; cnt++;
 900                 }
 901                 info = usb_pipeout (pipe)?
 902                         TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
 903                 td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, dev, cnt, urb);
 904                 cnt++;
 905
 906                 if (!ohci->sleeping)
 907                         writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
 908                 break;
 909
 910         case PIPE_CONTROL:
 911                 info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
 912                 td_fill (ohci, info, setup, 8, dev, cnt++, urb);
 913                 if (data_len > 0) {
 914                         info = usb_pipeout (pipe)?
 915                                 TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
 916                         /* NOTE:  mishandles transfers >8K, some >4K */
 917                         td_fill (ohci, info, data, data_len, dev, cnt++, urb);
 918                 }
 919                 info = usb_pipeout (pipe)?
 920                         TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1;
 921                 td_fill (ohci, info, data, 0, dev, cnt++, urb);
 922                 if (!ohci->sleeping)
 923                         writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
 924                 break;
 925
 926         case PIPE_INTERRUPT:
 927                 info = usb_pipeout (urb->pipe)?
 928                         TD_CC | TD_DP_OUT | toggle:
 929                         TD_CC | TD_R | TD_DP_IN | toggle;
 930                 td_fill (ohci, info, data, data_len, dev, cnt++, urb);
 931                 break;
 932         }
 933         if (urb->length != cnt)
 934                 dbg("TD LENGTH %d != CNT %d", urb->length, cnt);
 935 }
 936
 937 /*-------------------------------------------------------------------------*
 938  * Done List handling functions
 939  *-------------------------------------------------------------------------*/
 940
 941 /* calculate the transfer length and update the urb */
 942
 943 static void dl_transfer_length(td_t * td)
 944 {
 945         __u32 tdINFO, tdBE, tdCBP;
 946         urb_priv_t *lurb_priv = td->ed->purb;
 947
 948         tdINFO = m32_swap (td->hwINFO);
 949         tdBE   = m32_swap (td->hwBE);
 950         tdCBP  = m32_swap (td->hwCBP);
 951
 952         if (!(usb_pipetype (lurb_priv->pipe) == PIPE_CONTROL &&
 953             ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
 954                 if (tdBE != 0) {
 955                         if (td->hwCBP == 0)
 956                                 lurb_priv->actual_length += tdBE - td->data + 1;
 957                         else
 958                                 lurb_priv->actual_length += tdCBP - td->data;
 959                 }
 960         }
 961 }
 962
 963 /*-------------------------------------------------------------------------*/
 964
 965 /* replies to the request have to be on a FIFO basis so
 966  * we reverse the reversed done-list */
 967
 968 static td_t * dl_reverse_done_list (ohci_t *ohci)
 969 {
 970         __u32 td_list_hc;
 971         td_t *td_rev = NULL;
 972         td_t *td_list = NULL;
 973         urb_priv_t *lurb_priv = NULL;
 974
 975         td_list_hc = m32_swap (ohci->hcca->done_head) & 0xfffffff0;
 976         ohci->hcca->done_head = 0;
 977
 978         while (td_list_hc) {
 979                 td_list = (td_t *)td_list_hc;
 980
 981                 if (TD_CC_GET (m32_swap (td_list->hwINFO))) {
 982                         lurb_priv = td_list->ed->purb;
 983                         dbg(" USB-error/status: %x : %p",
 984                                         TD_CC_GET (m32_swap (td_list->hwINFO)), td_list);
 985                         if (td_list->ed->hwHeadP & m32_swap (0x1)) {
 986                                 if (lurb_priv && ((td_list->index + 1) < lurb_priv->length)) {
 987                                         td_list->ed->hwHeadP =
 988                                                 (lurb_priv->td[lurb_priv->length - 1]->hwNextTD & m32_swap (0xfffffff0)) |
 989                                                                         (td_list->ed->hwHeadP & m32_swap (0x2));
 990                                         lurb_priv->td_cnt += lurb_priv->length - td_list->index - 1;
 991                                 } else
 992                                         td_list->ed->hwHeadP &= m32_swap (0xfffffff2);
 993                         }
 994 #ifdef CONFIG_MPC5200
 995                         td_list->hwNextTD = 0;
 996 #endif
 997                 }
 998
 999                 td_list->next_dl_td = td_rev;
1000                 td_rev = td_list;
1001                 td_list_hc = m32_swap (td_list->hwNextTD) & 0xfffffff0;
1002         }
1003         return td_list;
1004 }
1005
1006 /*-------------------------------------------------------------------------*/
1007
1008 /* td done list */
1009 static int dl_done_list (ohci_t *ohci, td_t *td_list)
1010 {
1011         td_t *td_list_next = NULL;
1012         ed_t *ed;
1013         int cc = 0;
1014         int stat = 0;
1015         /* urb_t *urb; */
1016         urb_priv_t *lurb_priv;
1017         __u32 tdINFO, edHeadP, edTailP;
1018
1019         while (td_list) {
1020                 td_list_next = td_list->next_dl_td;
1021
1022                 tdINFO = m32_swap (td_list->hwINFO);
1023
1024                 ed = td_list->ed;
1025                 lurb_priv = ed->purb;
1026
1027                 dl_transfer_length(td_list);
1028
1029                 /* error code of transfer */
1030                 cc = TD_CC_GET (tdINFO);
1031                 if (cc != 0) {
1032                         dbg("ConditionCode %#x", cc);
1033                         stat = cc_to_error[cc];
1034                 }
1035
1036                 /* see if this done list makes for all TD's of current URB,
1037                  * and mark the URB finished if so */
1038                 if (++(lurb_priv->td_cnt) == lurb_priv->length) {
1039 #if 1
1040                         if ((ed->state & (ED_OPER | ED_UNLINK)) &&
1041                             (lurb_priv->state != URB_DEL))
1042 #else
1043                         if ((ed->state & (ED_OPER | ED_UNLINK)))
1044 #endif
1045                                 lurb_priv->finished = sohci_return_job(ohci,
1046                                                 lurb_priv);
1047                         else
1048                                 dbg("dl_done_list: strange.., ED state %x, ed->state\n");
1049                 } else
1050                         dbg("dl_done_list: processing TD %x, len %x\n", lurb_priv->td_cnt,
1051                                 lurb_priv->length);
1052                 if (ed->state != ED_NEW &&
1053                           (usb_pipetype (lurb_priv->pipe) != PIPE_INTERRUPT)) {
1054                         edHeadP = m32_swap (ed->hwHeadP) & 0xfffffff0;
1055                         edTailP = m32_swap (ed->hwTailP);
1056
1057                         /* unlink eds if they are not busy */
1058                         if ((edHeadP == edTailP) && (ed->state == ED_OPER))
1059                                 ep_unlink (ohci, ed);
1060                 }
1061
1062                 td_list = td_list_next;
1063         }
1064         return stat;
1065 }
1066
1067 /*-------------------------------------------------------------------------*
1068  * Virtual Root Hub
1069  *-------------------------------------------------------------------------*/
1070
1071 /* Device descriptor */
1072 static __u8 root_hub_dev_des[] =
1073 {
1074         0x12,       /*  __u8  bLength; */
1075         0x01,       /*  __u8  bDescriptorType; Device */
1076         0x10,       /*  __u16 bcdUSB; v1.1 */
1077         0x01,
1078         0x09,       /*  __u8  bDeviceClass; HUB_CLASSCODE */
1079         0x00,       /*  __u8  bDeviceSubClass; */
1080         0x00,       /*  __u8  bDeviceProtocol; */
1081         0x08,       /*  __u8  bMaxPacketSize0; 8 Bytes */
1082         0x00,       /*  __u16 idVendor; */
1083         0x00,
1084         0x00,       /*  __u16 idProduct; */
1085         0x00,
1086         0x00,       /*  __u16 bcdDevice; */
1087         0x00,
1088         0x00,       /*  __u8  iManufacturer; */
1089         0x01,       /*  __u8  iProduct; */
1090         0x00,       /*  __u8  iSerialNumber; */
1091         0x01        /*  __u8  bNumConfigurations; */
1092 };
1093
1094 /* Configuration descriptor */
1095 static __u8 root_hub_config_des[] =
1096 {
1097         0x09,       /*  __u8  bLength; */
1098         0x02,       /*  __u8  bDescriptorType; Configuration */
1099         0x19,       /*  __u16 wTotalLength; */
1100         0x00,
1101         0x01,       /*  __u8  bNumInterfaces; */
1102         0x01,       /*  __u8  bConfigurationValue; */
1103         0x00,       /*  __u8  iConfiguration; */
1104         0x40,       /*  __u8  bmAttributes;
1105                  Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
1106         0x00,       /*  __u8  MaxPower; */
1107
1108         /* interface */
1109         0x09,       /*  __u8  if_bLength; */
1110         0x04,       /*  __u8  if_bDescriptorType; Interface */
1111         0x00,       /*  __u8  if_bInterfaceNumber; */
1112         0x00,       /*  __u8  if_bAlternateSetting; */
1113         0x01,       /*  __u8  if_bNumEndpoints; */
1114         0x09,       /*  __u8  if_bInterfaceClass; HUB_CLASSCODE */
1115         0x00,       /*  __u8  if_bInterfaceSubClass; */
1116         0x00,       /*  __u8  if_bInterfaceProtocol; */
1117         0x00,       /*  __u8  if_iInterface; */
1118
1119         /* endpoint */
1120         0x07,       /*  __u8  ep_bLength; */
1121         0x05,       /*  __u8  ep_bDescriptorType; Endpoint */
1122         0x81,       /*  __u8  ep_bEndpointAddress; IN Endpoint 1 */
1123         0x03,       /*  __u8  ep_bmAttributes; Interrupt */
1124         0x02,       /*  __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
1125         0x00,
1126         0xff        /*  __u8  ep_bInterval; 255 ms */
1127 };
1128
1129 static unsigned char root_hub_str_index0[] =
1130 {
1131         0x04,                   /*  __u8  bLength; */
1132         0x03,                   /*  __u8  bDescriptorType; String-descriptor */
1133         0x09,                   /*  __u8  lang ID */
1134         0x04,                   /*  __u8  lang ID */
1135 };
1136
1137 static unsigned char root_hub_str_index1[] =
1138 {
1139         28,                     /*  __u8  bLength; */
1140         0x03,                   /*  __u8  bDescriptorType; String-descriptor */
1141         'O',                    /*  __u8  Unicode */
1142         0,                              /*  __u8  Unicode */
1143         'H',                    /*  __u8  Unicode */
1144         0,                              /*  __u8  Unicode */
1145         'C',                    /*  __u8  Unicode */
1146         0,                              /*  __u8  Unicode */
1147         'I',                    /*  __u8  Unicode */
1148         0,                              /*  __u8  Unicode */
1149         ' ',                    /*  __u8  Unicode */
1150         0,                              /*  __u8  Unicode */
1151         'R',                    /*  __u8  Unicode */
1152         0,                              /*  __u8  Unicode */
1153         'o',                    /*  __u8  Unicode */
1154         0,                              /*  __u8  Unicode */
1155         'o',                    /*  __u8  Unicode */
1156         0,                              /*  __u8  Unicode */
1157         't',                    /*  __u8  Unicode */
1158         0,                              /*  __u8  Unicode */
1159         ' ',                    /*  __u8  Unicode */
1160         0,                              /*  __u8  Unicode */
1161         'H',                    /*  __u8  Unicode */
1162         0,                              /*  __u8  Unicode */
1163         'u',                    /*  __u8  Unicode */
1164         0,                              /*  __u8  Unicode */
1165         'b',                    /*  __u8  Unicode */
1166         0,                              /*  __u8  Unicode */
1167 };
1168
1169 /* Hub class-specific descriptor is constructed dynamically */
1170
1171 /*-------------------------------------------------------------------------*/
1172
1173 #define OK(x)                   len = (x); break
1174 #ifdef DEBUG
1175 #define WR_RH_STAT(x)           {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);}
1176 #define WR_RH_PORTSTAT(x)       {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);}
1177 #else
1178 #define WR_RH_STAT(x)           writel((x), &gohci.regs->roothub.status)
1179 #define WR_RH_PORTSTAT(x)       writel((x), &gohci.regs->roothub.portstatus[wIndex-1])
1180 #endif
1181 #define RD_RH_STAT              roothub_status(&gohci)
1182 #define RD_RH_PORTSTAT          roothub_portstatus(&gohci,wIndex-1)
1183
1184 /* request to virtual root hub */
1185
1186 int rh_check_port_status(ohci_t *controller)
1187 {
1188         __u32 temp, ndp, i;
1189         int res;
1190
1191         res = -1;
1192         temp = roothub_a (controller);
1193         ndp = (temp & RH_A_NDP);
1194 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1195         ndp = (ndp == 2) ? 1:0;
1196 #endif
1197         for (i = 0; i < ndp; i++) {
1198                 temp = roothub_portstatus (controller, i);
1199                 /* check for a device disconnect */
1200                 if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
1201                         (RH_PS_PESC | RH_PS_CSC)) &&
1202                         ((temp & RH_PS_CCS) == 0)) {
1203                         res = i;
1204                         break;
1205                 }
1206         }
1207         return res;
1208 }
1209
1210 static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
1211                 void *buffer, int transfer_len, struct devrequest *cmd)
1212 {
1213         void * data = buffer;
1214         int leni = transfer_len;
1215         int len = 0;
1216         int stat = 0;
1217         __u32 datab[4];
1218         __u8 *data_buf = (__u8 *)datab;
1219         __u16 bmRType_bReq;
1220         __u16 wValue;
1221         __u16 wIndex;
1222         __u16 wLength;
1223
1224 #ifdef DEBUG
1225 pkt_print(NULL, dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
1226 #else
1227         wait_ms(1);
1228 #endif
1229         if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
1230                 info("Root-Hub submit IRQ: NOT implemented");
1231                 return 0;
1232         }
1233
1234         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
1235         wValue        = cpu_to_le16 (cmd->value);
1236         wIndex        = cpu_to_le16 (cmd->index);
1237         wLength       = cpu_to_le16 (cmd->length);
1238
1239         info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
1240                 dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength);
1241
1242         switch (bmRType_bReq) {
1243         /* Request Destination:
1244            without flags: Device,
1245            RH_INTERFACE: interface,
1246            RH_ENDPOINT: endpoint,
1247            RH_CLASS means HUB here,
1248            RH_OTHER | RH_CLASS  almost ever means HUB_PORT here
1249         */
1250
1251         case RH_GET_STATUS:
1252                         *(__u16 *) data_buf = cpu_to_le16 (1); OK (2);
1253         case RH_GET_STATUS | RH_INTERFACE:
1254                         *(__u16 *) data_buf = cpu_to_le16 (0); OK (2);
1255         case RH_GET_STATUS | RH_ENDPOINT:
1256                         *(__u16 *) data_buf = cpu_to_le16 (0); OK (2);
1257         case RH_GET_STATUS | RH_CLASS:
1258                         *(__u32 *) data_buf = cpu_to_le32 (
1259                                 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
1260                         OK (4);
1261         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1262                         *(__u32 *) data_buf = cpu_to_le32 (RD_RH_PORTSTAT); OK (4);
1263
1264         case RH_CLEAR_FEATURE | RH_ENDPOINT:
1265                 switch (wValue) {
1266                         case (RH_ENDPOINT_STALL): OK (0);
1267                 }
1268                 break;
1269
1270         case RH_CLEAR_FEATURE | RH_CLASS:
1271                 switch (wValue) {
1272                         case RH_C_HUB_LOCAL_POWER:
1273                                 OK(0);
1274                         case (RH_C_HUB_OVER_CURRENT):
1275                                         WR_RH_STAT(RH_HS_OCIC); OK (0);
1276                 }
1277                 break;
1278
1279         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
1280                 switch (wValue) {
1281                         case (RH_PORT_ENABLE):
1282                                         WR_RH_PORTSTAT (RH_PS_CCS ); OK (0);
1283                         case (RH_PORT_SUSPEND):
1284                                         WR_RH_PORTSTAT (RH_PS_POCI); OK (0);
1285                         case (RH_PORT_POWER):
1286                                         WR_RH_PORTSTAT (RH_PS_LSDA); OK (0);
1287                         case (RH_C_PORT_CONNECTION):
1288                                         WR_RH_PORTSTAT (RH_PS_CSC ); OK (0);
1289                         case (RH_C_PORT_ENABLE):
1290                                         WR_RH_PORTSTAT (RH_PS_PESC); OK (0);
1291                         case (RH_C_PORT_SUSPEND):
1292                                         WR_RH_PORTSTAT (RH_PS_PSSC); OK (0);
1293                         case (RH_C_PORT_OVER_CURRENT):
1294                                         WR_RH_PORTSTAT (RH_PS_OCIC); OK (0);
1295                         case (RH_C_PORT_RESET):
1296                                         WR_RH_PORTSTAT (RH_PS_PRSC); OK (0);
1297                 }
1298                 break;
1299
1300         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
1301                 switch (wValue) {
1302                         case (RH_PORT_SUSPEND):
1303                                         WR_RH_PORTSTAT (RH_PS_PSS ); OK (0);
1304                         case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
1305                                         if (RD_RH_PORTSTAT & RH_PS_CCS)
1306                                             WR_RH_PORTSTAT (RH_PS_PRS);
1307                                         OK (0);
1308                         case (RH_PORT_POWER):
1309                                         WR_RH_PORTSTAT (RH_PS_PPS );
1310                                         wait_ms(100);
1311                                         OK (0);
1312                         case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
1313                                         if (RD_RH_PORTSTAT & RH_PS_CCS)
1314                                             WR_RH_PORTSTAT (RH_PS_PES );
1315                                         OK (0);
1316                 }
1317                 break;
1318
1319         case RH_SET_ADDRESS: gohci.rh.devnum = wValue; OK(0);
1320
1321         case RH_GET_DESCRIPTOR:
1322                 switch ((wValue & 0xff00) >> 8) {
1323                         case (0x01): /* device descriptor */
1324                                 len = min_t(unsigned int,
1325                                           leni,
1326                                           min_t(unsigned int,
1327                                               sizeof (root_hub_dev_des),
1328                                               wLength));
1329                                 data_buf = root_hub_dev_des; OK(len);
1330                         case (0x02): /* configuration descriptor */
1331                                 len = min_t(unsigned int,
1332                                           leni,
1333                                           min_t(unsigned int,
1334                                               sizeof (root_hub_config_des),
1335                                               wLength));
1336                                 data_buf = root_hub_config_des; OK(len);
1337                         case (0x03): /* string descriptors */
1338                                 if(wValue==0x0300) {
1339                                         len = min_t(unsigned int,
1340                                                   leni,
1341                                                   min_t(unsigned int,
1342                                                       sizeof (root_hub_str_index0),
1343                                                       wLength));
1344                                         data_buf = root_hub_str_index0;
1345                                         OK(len);
1346                                 }
1347                                 if(wValue==0x0301) {
1348                                         len = min_t(unsigned int,
1349                                                   leni,
1350                                                   min_t(unsigned int,
1351                                                       sizeof (root_hub_str_index1),
1352                                                       wLength));
1353                                         data_buf = root_hub_str_index1;
1354                                         OK(len);
1355                         }
1356                         default:
1357                                 stat = USB_ST_STALLED;
1358                 }
1359                 break;
1360
1361         case RH_GET_DESCRIPTOR | RH_CLASS:
1362         {
1363                 __u32 temp = roothub_a (&gohci);
1364
1365                 data_buf [0] = 9;               /* min length; */
1366                 data_buf [1] = 0x29;
1367                 data_buf [2] = temp & RH_A_NDP;
1368 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1369                 data_buf [2] = (data_buf [2] == 2) ? 1:0;
1370 #endif
1371                 data_buf [3] = 0;
1372                 if (temp & RH_A_PSM)    /* per-port power switching? */
1373                         data_buf [3] |= 0x1;
1374                 if (temp & RH_A_NOCP)   /* no overcurrent reporting? */
1375                         data_buf [3] |= 0x10;
1376                 else if (temp & RH_A_OCPM)      /* per-port overcurrent reporting? */
1377                         data_buf [3] |= 0x8;
1378
1379                 /* corresponds to data_buf[4-7] */
1380                 datab [1] = 0;
1381                 data_buf [5] = (temp & RH_A_POTPGT) >> 24;
1382                 temp = roothub_b (&gohci);
1383                 data_buf [7] = temp & RH_B_DR;
1384                 if (data_buf [2] < 7) {
1385                         data_buf [8] = 0xff;
1386                 } else {
1387                         data_buf [0] += 2;
1388                         data_buf [8] = (temp & RH_B_DR) >> 8;
1389                         data_buf [10] = data_buf [9] = 0xff;
1390                 }
1391
1392                 len = min_t(unsigned int, leni,
1393                             min_t(unsigned int, data_buf [0], wLength));
1394                 OK (len);
1395         }
1396
1397         case RH_GET_CONFIGURATION:      *(__u8 *) data_buf = 0x01; OK (1);
1398
1399         case RH_SET_CONFIGURATION:      WR_RH_STAT (0x10000); OK (0);
1400
1401         default:
1402                 dbg ("unsupported root hub command");
1403                 stat = USB_ST_STALLED;
1404         }
1405
1406 #ifdef  DEBUG
1407         ohci_dump_roothub (&gohci, 1);
1408 #else
1409         wait_ms(1);
1410 #endif
1411
1412         len = min_t(int, len, leni);
1413         if (data != data_buf)
1414             memcpy (data, data_buf, len);
1415         dev->act_len = len;
1416         dev->status = stat;
1417
1418 #ifdef DEBUG
1419         pkt_print(NULL, dev, pipe, buffer, transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
1420 #else
1421         wait_ms(1);
1422 #endif
1423
1424         return stat;
1425 }
1426
1427 /*-------------------------------------------------------------------------*/
1428
1429 /* common code for handling submit messages - used for all but root hub */
1430 /* accesses. */
1431 int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1432                 int transfer_len, struct devrequest *setup, int interval)
1433 {
1434         int stat = 0;
1435         int maxsize = usb_maxpacket(dev, pipe);
1436         int timeout;
1437         urb_priv_t *urb;
1438
1439         urb = malloc(sizeof(urb_priv_t));
1440         memset(urb, 0, sizeof(urb_priv_t));
1441
1442         urb->dev = dev;
1443         urb->pipe = pipe;
1444         urb->transfer_buffer = buffer;
1445         urb->transfer_buffer_length = transfer_len;
1446         urb->interval = interval;
1447
1448         /* device pulled? Shortcut the action. */
1449         if (devgone == dev) {
1450                 dev->status = USB_ST_CRC_ERR;
1451                 return 0;
1452         }
1453
1454 #ifdef DEBUG
1455         urb->actual_length = 0;
1456         pkt_print(urb, dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1457 #else
1458         wait_ms(1);
1459 #endif
1460         if (!maxsize) {
1461                 err("submit_common_message: pipesize for pipe %lx is zero",
1462                         pipe);
1463                 return -1;
1464         }
1465
1466         if (sohci_submit_job(urb, setup) < 0) {
1467                 err("sohci_submit_job failed");
1468                 return -1;
1469         }
1470
1471 #if 0
1472         wait_ms(10);
1473         /* ohci_dump_status(&gohci); */
1474 #endif
1475
1476         /* allow more time for a BULK device to react - some are slow */
1477 #define BULK_TO  5000   /* timeout in milliseconds */
1478         if (usb_pipetype (pipe) == PIPE_BULK)
1479                 timeout = BULK_TO;
1480         else
1481                 timeout = 100;
1482
1483         /* wait for it to complete */
1484         for (;;) {
1485                 /* check whether the controller is done */
1486                 stat = hc_interrupt();
1487                 if (stat < 0) {
1488                         stat = USB_ST_CRC_ERR;
1489                         break;
1490                 }
1491
1492                 /* NOTE: since we are not interrupt driven in U-Boot and always
1493                  * handle only one URB at a time, we cannot assume the
1494                  * transaction finished on the first successful return from
1495                  * hc_interrupt().. unless the flag for current URB is set,
1496                  * meaning that all TD's to/from device got actually
1497                  * transferred and processed. If the current URB is not
1498                  * finished we need to re-iterate this loop so as
1499                  * hc_interrupt() gets called again as there needs to be some
1500                  * more TD's to process still */
1501                 if ((stat >= 0) && (stat != 0xff) && (urb->finished)) {
1502                         /* 0xff is returned for an SF-interrupt */
1503                         break;
1504                 }
1505
1506                 if (--timeout) {
1507                         wait_ms(1);
1508                         if (!urb->finished)
1509                                 dbg("\%");
1510
1511                 } else {
1512                         err("CTL:TIMEOUT ");
1513                         dbg("submit_common_msg: TO status %x\n", stat);
1514                         urb->finished = 1;
1515                         stat = USB_ST_CRC_ERR;
1516                         break;
1517                 }
1518         }
1519
1520         dev->status = stat;
1521         dev->act_len = transfer_len;
1522
1523 #ifdef DEBUG
1524         pkt_print(urb, dev, pipe, buffer, transfer_len, setup, "RET(ctlr)", usb_pipein(pipe));
1525 #else
1526         wait_ms(1);
1527 #endif
1528
1529         /* free TDs in urb_priv */
1530         if (usb_pipetype (pipe) != PIPE_INTERRUPT)
1531                 urb_free_priv (urb);
1532         return 0;
1533 }
1534
1535 /* submit routines called from usb.c */
1536 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1537                 int transfer_len)
1538 {
1539         info("submit_bulk_msg");
1540         return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
1541 }
1542
1543 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1544                 int transfer_len, struct devrequest *setup)
1545 {
1546         int maxsize = usb_maxpacket(dev, pipe);
1547
1548         info("submit_control_msg");
1549 #ifdef DEBUG
1550         pkt_print(NULL, dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1551 #else
1552         wait_ms(1);
1553 #endif
1554         if (!maxsize) {
1555                 err("submit_control_message: pipesize for pipe %lx is zero",
1556                         pipe);
1557                 return -1;
1558         }
1559         if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
1560                 gohci.rh.dev = dev;
1561                 /* root hub - redirect */
1562                 return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
1563                         setup);
1564         }
1565
1566         return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
1567 }
1568
1569 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1570                 int transfer_len, int interval)
1571 {
1572         info("submit_int_msg");
1573         return submit_common_msg(dev, pipe, buffer, transfer_len, NULL,
1574                         interval);
1575 }
1576
1577 /*-------------------------------------------------------------------------*
1578  * HC functions
1579  *-------------------------------------------------------------------------*/
1580
1581 /* reset the HC and BUS */
1582
1583 static int hc_reset (ohci_t *ohci)
1584 {
1585         int timeout = 30;
1586         int smm_timeout = 50; /* 0,5 sec */
1587
1588         dbg("%s\n", __FUNCTION__);
1589
1590         if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
1591                 writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */
1592                 info("USB HC TakeOver from SMM");
1593                 while (readl (&ohci->regs->control) & OHCI_CTRL_IR) {
1594                         wait_ms (10);
1595                         if (--smm_timeout == 0) {
1596                                 err("USB HC TakeOver failed!");
1597                                 return -1;
1598                         }
1599                 }
1600         }
1601
1602         /* Disable HC interrupts */
1603         writel (OHCI_INTR_MIE, &ohci->regs->intrdisable);
1604
1605         dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;\n",
1606                 ohci->slot_name,
1607                 readl(&ohci->regs->control));
1608
1609         /* Reset USB (needed by some controllers) */
1610         ohci->hc_control = 0;
1611         writel (ohci->hc_control, &ohci->regs->control);
1612
1613         /* HC Reset requires max 10 us delay */
1614         writel (OHCI_HCR,  &ohci->regs->cmdstatus);
1615         while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
1616                 if (--timeout == 0) {
1617                         err("USB HC reset timed out!");
1618                         return -1;
1619                 }
1620                 udelay (1);
1621         }
1622         return 0;
1623 }
1624
1625 /*-------------------------------------------------------------------------*/
1626
1627 /* Start an OHCI controller, set the BUS operational
1628  * enable interrupts
1629  * connect the virtual root hub */
1630
1631 static int hc_start (ohci_t * ohci)
1632 {
1633         __u32 mask;
1634         unsigned int fminterval;
1635
1636         ohci->disabled = 1;
1637
1638         /* Tell the controller where the control and bulk lists are
1639          * The lists are empty now. */
1640
1641         writel (0, &ohci->regs->ed_controlhead);
1642         writel (0, &ohci->regs->ed_bulkhead);
1643
1644         writel ((__u32)ohci->hcca, &ohci->regs->hcca); /* a reset clears this */
1645
1646         fminterval = 0x2edf;
1647         writel ((fminterval * 9) / 10, &ohci->regs->periodicstart);
1648         fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
1649         writel (fminterval, &ohci->regs->fminterval);
1650         writel (0x628, &ohci->regs->lsthresh);
1651
1652         /* start controller operations */
1653         ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
1654         ohci->disabled = 0;
1655         writel (ohci->hc_control, &ohci->regs->control);
1656
1657         /* disable all interrupts */
1658         mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD |
1659                         OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
1660                         OHCI_INTR_OC | OHCI_INTR_MIE);
1661         writel (mask, &ohci->regs->intrdisable);
1662         /* clear all interrupts */
1663         mask &= ~OHCI_INTR_MIE;
1664         writel (mask, &ohci->regs->intrstatus);
1665         /* Choose the interrupts we care about now  - but w/o MIE */
1666         mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
1667         writel (mask, &ohci->regs->intrenable);
1668
1669 #ifdef  OHCI_USE_NPS
1670         /* required for AMD-756 and some Mac platforms */
1671         writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM,
1672                 &ohci->regs->roothub.a);
1673         writel (RH_HS_LPSC, &ohci->regs->roothub.status);
1674 #endif  /* OHCI_USE_NPS */
1675
1676 #define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);})
1677         /* POTPGT delay is bits 24-31, in 2 ms units. */
1678         mdelay ((roothub_a (ohci) >> 23) & 0x1fe);
1679
1680         /* connect the virtual root hub */
1681         ohci->rh.devnum = 0;
1682
1683         return 0;
1684 }
1685
1686 /*-------------------------------------------------------------------------*/
1687
1688 /* Poll USB interrupt. */
1689 void usb_event_poll(void)
1690 {
1691         hc_interrupt();
1692 }
1693
1694 /* an interrupt happens */
1695
1696 static int hc_interrupt (void)
1697 {
1698         ohci_t *ohci = &gohci;
1699         struct ohci_regs *regs = ohci->regs;
1700         int ints;
1701         int stat = -1;
1702
1703         if ((ohci->hcca->done_head != 0) &&
1704             !(m32_swap (ohci->hcca->done_head) & 0x01)) {
1705                 ints =  OHCI_INTR_WDH;
1706         } else if ((ints = readl (&regs->intrstatus)) == ~(u32)0) {
1707                 ohci->disabled++;
1708                 err ("%s device removed!", ohci->slot_name);
1709                 return -1;
1710         } else if ((ints &= readl (&regs->intrenable)) == 0) {
1711                 dbg("hc_interrupt: returning..\n");
1712                 return 0xff;
1713         }
1714
1715         /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
1716
1717         if (ints & OHCI_INTR_RHSC) {
1718                 got_rhsc = 1;
1719                 stat = 0xff;
1720         }
1721
1722         if (ints & OHCI_INTR_UE) {
1723                 ohci->disabled++;
1724                 err ("OHCI Unrecoverable Error, controller usb-%s disabled",
1725                         ohci->slot_name);
1726                 /* e.g. due to PCI Master/Target Abort */
1727
1728 #ifdef  DEBUG
1729                 ohci_dump (ohci, 1);
1730 #else
1731         wait_ms(1);
1732 #endif
1733                 /* FIXME: be optimistic, hope that bug won't repeat often. */
1734                 /* Make some non-interrupt context restart the controller. */
1735                 /* Count and limit the retries though; either hardware or */
1736                 /* software errors can go forever... */
1737                 hc_reset (ohci);
1738                 return -1;
1739         }
1740
1741         if (ints & OHCI_INTR_WDH) {
1742                 wait_ms(1);
1743                 writel (OHCI_INTR_WDH, &regs->intrdisable);
1744                 (void)readl (&regs->intrdisable); /* flush */
1745                 stat = dl_done_list (&gohci, dl_reverse_done_list (&gohci));
1746                 writel (OHCI_INTR_WDH, &regs->intrenable);
1747                 (void)readl (&regs->intrdisable); /* flush */
1748         }
1749
1750         if (ints & OHCI_INTR_SO) {
1751                 dbg("USB Schedule overrun\n");
1752                 writel (OHCI_INTR_SO, &regs->intrenable);
1753                 stat = -1;
1754         }
1755
1756         /* FIXME:  this assumes SOF (1/ms) interrupts don't get lost... */
1757         if (ints & OHCI_INTR_SF) {
1758                 unsigned int frame = m16_swap (ohci->hcca->frame_no) & 1;
1759                 wait_ms(1);
1760                 writel (OHCI_INTR_SF, &regs->intrdisable);
1761                 if (ohci->ed_rm_list[frame] != NULL)
1762                         writel (OHCI_INTR_SF, &regs->intrenable);
1763                 stat = 0xff;
1764         }
1765
1766         writel (ints, &regs->intrstatus);
1767         return stat;
1768 }
1769
1770 /*-------------------------------------------------------------------------*/
1771
1772 /*-------------------------------------------------------------------------*/
1773
1774 /* De-allocate all resources.. */
1775
1776 static void hc_release_ohci (ohci_t *ohci)
1777 {
1778         dbg ("USB HC release ohci usb-%s", ohci->slot_name);
1779
1780         if (!ohci->disabled)
1781                 hc_reset (ohci);
1782 }
1783
1784 /*-------------------------------------------------------------------------*/
1785
1786 /*
1787  * low level initalisation routine, called from usb.c
1788  */
1789 static char ohci_inited = 0;
1790
1791 int usb_lowlevel_init(void)
1792 {
1793 #ifdef CONFIG_PCI_OHCI
1794         pci_dev_t pdev;
1795 #endif
1796
1797 #ifdef CFG_USB_OHCI_CPU_INIT
1798         /* cpu dependant init */
1799         if(usb_cpu_init())
1800                 return -1;
1801 #endif
1802
1803 #ifdef CFG_USB_OHCI_BOARD_INIT
1804         /*  board dependant init */
1805         if(usb_board_init())
1806                 return -1;
1807 #endif
1808         memset (&gohci, 0, sizeof (ohci_t));
1809
1810         /* align the storage */
1811         if ((__u32)&ghcca[0] & 0xff) {
1812                 err("HCCA not aligned!!");
1813                 return -1;
1814         }
1815         phcca = &ghcca[0];
1816         info("aligned ghcca %p", phcca);
1817         memset(&ohci_dev, 0, sizeof(struct ohci_device));
1818         if ((__u32)&ohci_dev.ed[0] & 0x7) {
1819                 err("EDs not aligned!!");
1820                 return -1;
1821         }
1822         memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
1823         if ((__u32)gtd & 0x7) {
1824                 err("TDs not aligned!!");
1825                 return -1;
1826         }
1827         ptd = gtd;
1828         gohci.hcca = phcca;
1829         memset (phcca, 0, sizeof (struct ohci_hcca));
1830
1831         gohci.disabled = 1;
1832         gohci.sleeping = 0;
1833         gohci.irq = -1;
1834 #ifdef CONFIG_PCI_OHCI
1835         pdev = pci_find_devices(ohci_pci_ids, 0);
1836
1837         if (pdev != -1) {
1838                 u16 vid, did;
1839                 u32 base;
1840                 pci_read_config_word(pdev, PCI_VENDOR_ID, &vid);
1841                 pci_read_config_word(pdev, PCI_DEVICE_ID, &did);
1842                 printf("OHCI pci controller (%04x, %04x) found @(%d:%d:%d)\n",
1843                                 vid, did, (pdev >> 16) & 0xff,
1844                                 (pdev >> 11) & 0x1f, (pdev >> 8) & 0x7);
1845                 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &base);
1846                 printf("OHCI regs address 0x%08x\n", base);
1847                 gohci.regs = (struct ohci_regs *)base;
1848         } else
1849                 return -1;
1850 #else
1851         gohci.regs = (struct ohci_regs *)CFG_USB_OHCI_REGS_BASE;
1852 #endif
1853
1854         gohci.flags = 0;
1855         gohci.slot_name = CFG_USB_OHCI_SLOT_NAME;
1856
1857         if (hc_reset (&gohci) < 0) {
1858                 hc_release_ohci (&gohci);
1859                 err ("can't reset usb-%s", gohci.slot_name);
1860 #ifdef CFG_USB_OHCI_BOARD_INIT
1861                 /* board dependant cleanup */
1862                 usb_board_init_fail();
1863 #endif
1864
1865 #ifdef CFG_USB_OHCI_CPU_INIT
1866                 /* cpu dependant cleanup */
1867                 usb_cpu_init_fail();
1868 #endif
1869                 return -1;
1870         }
1871
1872         /* FIXME this is a second HC reset; why?? */
1873         /* writel(gohci.hc_control = OHCI_USB_RESET, &gohci.regs->control);
1874            wait_ms(10); */
1875         if (hc_start (&gohci) < 0) {
1876                 err ("can't start usb-%s", gohci.slot_name);
1877                 hc_release_ohci (&gohci);
1878                 /* Initialization failed */
1879 #ifdef CFG_USB_OHCI_BOARD_INIT
1880                 /* board dependant cleanup */
1881                 usb_board_stop();
1882 #endif
1883
1884 #ifdef CFG_USB_OHCI_CPU_INIT
1885                 /* cpu dependant cleanup */
1886                 usb_cpu_stop();
1887 #endif
1888                 return -1;
1889         }
1890
1891 #ifdef  DEBUG
1892         ohci_dump (&gohci, 1);
1893 #else
1894         wait_ms(1);
1895 #endif
1896         ohci_inited = 1;
1897         return 0;
1898 }
1899
1900 int usb_lowlevel_stop(void)
1901 {
1902         /* this gets called really early - before the controller has */
1903         /* even been initialized! */
1904         if (!ohci_inited)
1905                 return 0;
1906         /* TODO release any interrupts, etc. */
1907         /* call hc_release_ohci() here ? */
1908         hc_reset (&gohci);
1909
1910 #ifdef CFG_USB_OHCI_BOARD_INIT
1911         /* board dependant cleanup */
1912         if(usb_board_stop())
1913                 return -1;
1914 #endif
1915
1916 #ifdef CFG_USB_OHCI_CPU_INIT
1917         /* cpu dependant cleanup */
1918         if(usb_cpu_stop())
1919                 return -1;
1920 #endif
1921
1922         return 0;
1923 }
1924 #endif /* CONFIG_USB_OHCI_NEW */