drivers/usb/host/ehci-hcd.c

   1 /*-
   2  * Copyright (c) 2007-2008, Juniper Networks, Inc.
   3  * Copyright (c) 2008, Excito Elektronik i Skåne AB
   4  * Copyright (c) 2008, Michael Trimarchi <trimarchimichael@yahoo.it>
   5  *
   6  * All rights reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation version 2 of
  11  * the License.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23 #include <common.h>
  24 #include <asm/byteorder.h>
  25 #include <usb.h>
  26 #include <asm/io.h>
  27 #include <malloc.h>
  28 #include <watchdog.h>
  29 #ifdef CONFIG_USB_KEYBOARD
  30 #include <stdio_dev.h>
  31 extern unsigned char new[];
  32 #endif
  33
  34 #include "ehci.h"
  35
  36 int rootdev;
  37 struct ehci_hccr *hccr; /* R/O registers, not need for volatile */
  38 volatile struct ehci_hcor *hcor;
  39
  40 static uint16_t portreset;
  41 static struct QH qh_list __attribute__((aligned(32)));
  42
  43 static struct descriptor {
  44         struct usb_hub_descriptor hub;
  45         struct usb_device_descriptor device;
  46         struct usb_linux_config_descriptor config;
  47         struct usb_linux_interface_descriptor interface;
  48         struct usb_endpoint_descriptor endpoint;
  49 }  __attribute__ ((packed)) descriptor = {
  50         {
  51                 0x8,            /* bDescLength */
  52                 0x29,           /* bDescriptorType: hub descriptor */
  53                 2,              /* bNrPorts -- runtime modified */
  54                 0,              /* wHubCharacteristics */
  55                 10,             /* bPwrOn2PwrGood */
  56                 0,              /* bHubCntrCurrent */
  57                 {},             /* Device removable */
  58                 {}              /* at most 7 ports! XXX */
  59         },
  60         {
  61                 0x12,           /* bLength */
  62                 1,              /* bDescriptorType: UDESC_DEVICE */
  63                 cpu_to_le16(0x0200), /* bcdUSB: v2.0 */
  64                 9,              /* bDeviceClass: UDCLASS_HUB */
  65                 0,              /* bDeviceSubClass: UDSUBCLASS_HUB */
  66                 1,              /* bDeviceProtocol: UDPROTO_HSHUBSTT */
  67                 64,             /* bMaxPacketSize: 64 bytes */
  68                 0x0000,         /* idVendor */
  69                 0x0000,         /* idProduct */
  70                 cpu_to_le16(0x0100), /* bcdDevice */
  71                 1,              /* iManufacturer */
  72                 2,              /* iProduct */
  73                 0,              /* iSerialNumber */
  74                 1               /* bNumConfigurations: 1 */
  75         },
  76         {
  77                 0x9,
  78                 2,              /* bDescriptorType: UDESC_CONFIG */
  79                 cpu_to_le16(0x19),
  80                 1,              /* bNumInterface */
  81                 1,              /* bConfigurationValue */
  82                 0,              /* iConfiguration */
  83                 0x40,           /* bmAttributes: UC_SELF_POWER */
  84                 0               /* bMaxPower */
  85         },
  86         {
  87                 0x9,            /* bLength */
  88                 4,              /* bDescriptorType: UDESC_INTERFACE */
  89                 0,              /* bInterfaceNumber */
  90                 0,              /* bAlternateSetting */
  91                 1,              /* bNumEndpoints */
  92                 9,              /* bInterfaceClass: UICLASS_HUB */
  93                 0,              /* bInterfaceSubClass: UISUBCLASS_HUB */
  94                 0,              /* bInterfaceProtocol: UIPROTO_HSHUBSTT */
  95                 0               /* iInterface */
  96         },
  97         {
  98                 0x7,            /* bLength */
  99                 5,              /* bDescriptorType: UDESC_ENDPOINT */
 100                 0x81,           /* bEndpointAddress:
 101                                  * UE_DIR_IN | EHCI_INTR_ENDPT
 102                                  */
 103                 3,              /* bmAttributes: UE_INTERRUPT */
 104                 8,              /* wMaxPacketSize */
 105                 255             /* bInterval */
 106         },
 107 };
 108
 109 #if defined(CONFIG_EHCI_IS_TDI)
 110 #define ehci_is_TDI()   (1)
 111 #else
 112 #define ehci_is_TDI()   (0)
 113 #endif
 114
 115 #if defined(CONFIG_EHCI_DCACHE)
 116 /*
 117  * Routines to handle (flush/invalidate) the dcache for the QH and qTD
 118  * structures and data buffers. This is needed on platforms using this
 119  * EHCI support with dcache enabled.
 120  */
 121 static void flush_invalidate(u32 addr, int size, int flush)
 122 {
 123         if (flush)
 124                 flush_dcache_range(addr, addr + size);
 125         else
 126                 invalidate_dcache_range(addr, addr + size);
 127 }
 128
 129 static void cache_qtd(struct qTD *qtd, int flush)
 130 {
 131         u32 *ptr = (u32 *)qtd->qt_buffer[0];
 132         int len = (qtd->qt_token & 0x7fff0000) >> 16;
 133
 134         flush_invalidate((u32)qtd, sizeof(struct qTD), flush);
 135         if (ptr && len)
 136                 flush_invalidate((u32)ptr, len, flush);
 137 }
 138
 139
 140 static inline struct QH *qh_addr(struct QH *qh)
 141 {
 142         return (struct QH *)((u32)qh & 0xffffffe0);
 143 }
 144
 145 static void cache_qh(struct QH *qh, int flush)
 146 {
 147         struct qTD *qtd;
 148         struct qTD *next;
 149         static struct qTD *first_qtd;
 150
 151         /*
 152          * Walk the QH list and flush/invalidate all entries
 153          */
 154         while (1) {
 155                 flush_invalidate((u32)qh_addr(qh), sizeof(struct QH), flush);
 156                 if ((u32)qh & QH_LINK_TYPE_QH)
 157                         break;
 158                 qh = qh_addr(qh);
 159                 qh = (struct QH *)qh->qh_link;
 160         }
 161         qh = qh_addr(qh);
 162
 163         /*
 164          * Save first qTD pointer, needed for invalidating pass on this QH
 165          */
 166         if (flush)
 167                 first_qtd = qtd = (struct qTD *)(*(u32 *)&qh->qh_overlay &
 168                                                  0xffffffe0);
 169         else
 170                 qtd = first_qtd;
 171
 172         /*
 173          * Walk the qTD list and flush/invalidate all entries
 174          */
 175         while (1) {
 176                 if (qtd == NULL)
 177                         break;
 178                 cache_qtd(qtd, flush);
 179                 next = (struct qTD *)((u32)qtd->qt_next & 0xffffffe0);
 180                 if (next == qtd)
 181                         break;
 182                 qtd = next;
 183         }
 184 }
 185
 186 static inline void ehci_flush_dcache(struct QH *qh)
 187 {
 188         cache_qh(qh, 1);
 189 }
 190
 191 static inline void ehci_invalidate_dcache(struct QH *qh)
 192 {
 193         cache_qh(qh, 0);
 194 }
 195 #else /* CONFIG_EHCI_DCACHE */
 196 /*
 197  *
 198  */
 199 static inline void ehci_flush_dcache(struct QH *qh)
 200 {
 201 }
 202
 203 static inline void ehci_invalidate_dcache(struct QH *qh)
 204 {
 205 }
 206 #endif /* CONFIG_EHCI_DCACHE */
 207
 208 void __ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
 209 {
 210         mdelay(50);
 211 }
 212
 213 void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
 214         __attribute__((weak, alias("__ehci_powerup_fixup")));
 215
 216 static int handshake(uint32_t *ptr, uint32_t mask, uint32_t done, int usec)
 217 {
 218         uint32_t result;
 219         do {
 220                 result = ehci_readl(ptr);
 221                 udelay(5);
 222                 if (result == ~(uint32_t)0)
 223                         return -1;
 224                 result &= mask;
 225                 if (result == done)
 226                         return 0;
 227                 usec--;
 228         } while (usec > 0);
 229         return -1;
 230 }
 231
 232 static void ehci_free(void *p, size_t sz)
 233 {
 234
 235 }
 236
 237 static int ehci_reset(void)
 238 {
 239         uint32_t cmd;
 240         uint32_t tmp;
 241         uint32_t *reg_ptr;
 242         int ret = 0;
 243
 244         cmd = ehci_readl(&hcor->or_usbcmd);
 245         cmd = (cmd & ~CMD_RUN) | CMD_RESET;
 246         ehci_writel(&hcor->or_usbcmd, cmd);
 247         ret = handshake((uint32_t *)&hcor->or_usbcmd, CMD_RESET, 0, 250 * 1000);
 248         if (ret < 0) {
 249                 printf("EHCI fail to reset\n");
 250                 goto out;
 251         }
 252
 253         if (ehci_is_TDI()) {
 254                 reg_ptr = (uint32_t *)((u8 *)hcor + USBMODE);
 255                 tmp = ehci_readl(reg_ptr);
 256                 tmp |= USBMODE_CM_HC;
 257 #if defined(CONFIG_EHCI_MMIO_BIG_ENDIAN)
 258                 tmp |= USBMODE_BE;
 259 #endif
 260                 ehci_writel(reg_ptr, tmp);
 261         }
 262 out:
 263         return ret;
 264 }
 265
 266 static void *ehci_alloc(size_t sz, size_t align)
 267 {
 268         static struct QH qh __attribute__((aligned(32)));
 269         static struct qTD td[3] __attribute__((aligned (32)));
 270         static int ntds;
 271         void *p;
 272
 273         switch (sz) {
 274         case sizeof(struct QH):
 275                 p = &qh;
 276                 ntds = 0;
 277                 break;
 278         case sizeof(struct qTD):
 279                 if (ntds == 3) {
 280                         debug("out of TDs\n");
 281                         return NULL;
 282                 }
 283                 p = &td[ntds];
 284                 ntds++;
 285                 break;
 286         default:
 287                 debug("unknown allocation size\n");
 288                 return NULL;
 289         }
 290
 291         memset(p, 0, sz);
 292         return p;
 293 }
 294
 295 static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
 296 {
 297         uint32_t addr, delta, next;
 298         int idx;
 299
 300         addr = (uint32_t) buf;
 301         idx = 0;
 302         while (idx < 5) {
 303                 td->qt_buffer[idx] = cpu_to_hc32(addr);
 304                 td->qt_buffer_hi[idx] = 0;
 305                 next = (addr + 4096) & ~4095;
 306                 delta = next - addr;
 307                 if (delta >= sz)
 308                         break;
 309                 sz -= delta;
 310                 addr = next;
 311                 idx++;
 312         }
 313
 314         if (idx == 5) {
 315                 debug("out of buffer pointers (%u bytes left)\n", sz);
 316                 return -1;
 317         }
 318
 319         return 0;
 320 }
 321
 322 static int
 323 ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 324                    int length, struct devrequest *req)
 325 {
 326         struct QH *qh;
 327         struct qTD *td;
 328         volatile struct qTD *vtd;
 329         unsigned long ts;
 330         uint32_t *tdp;
 331         uint32_t endpt, token, usbsts;
 332         uint32_t c, toggle;
 333         uint32_t cmd;
 334         int timeout;
 335         int ret = 0;
 336
 337         debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
 338               buffer, length, req);
 339         if (req != NULL)
 340                 debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n",
 341                       req->request, req->request,
 342                       req->requesttype, req->requesttype,
 343                       le16_to_cpu(req->value), le16_to_cpu(req->value),
 344                       le16_to_cpu(req->index));
 345
 346         qh = ehci_alloc(sizeof(struct QH), 32);
 347         if (qh == NULL) {
 348                 debug("unable to allocate QH\n");
 349                 return -1;
 350         }
 351         qh->qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 352         c = (usb_pipespeed(pipe) != USB_SPEED_HIGH &&
 353              usb_pipeendpoint(pipe) == 0) ? 1 : 0;
 354         endpt = (8 << 28) |
 355             (c << 27) |
 356             (usb_maxpacket(dev, pipe) << 16) |
 357             (0 << 15) |
 358             (1 << 14) |
 359             (usb_pipespeed(pipe) << 12) |
 360             (usb_pipeendpoint(pipe) << 8) |
 361             (0 << 7) | (usb_pipedevice(pipe) << 0);
 362         qh->qh_endpt1 = cpu_to_hc32(endpt);
 363         endpt = (1 << 30) |
 364             (dev->portnr << 23) |
 365             (dev->parent->devnum << 16) | (0 << 8) | (0 << 0);
 366         qh->qh_endpt2 = cpu_to_hc32(endpt);
 367         qh->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 368
 369         td = NULL;
 370         tdp = &qh->qh_overlay.qt_next;
 371
 372         toggle =
 373             usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
 374
 375         if (req != NULL) {
 376                 td = ehci_alloc(sizeof(struct qTD), 32);
 377                 if (td == NULL) {
 378                         debug("unable to allocate SETUP td\n");
 379                         goto fail;
 380                 }
 381                 td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 382                 td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 383                 token = (0 << 31) |
 384                     (sizeof(*req) << 16) |
 385                     (0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0);
 386                 td->qt_token = cpu_to_hc32(token);
 387                 if (ehci_td_buffer(td, req, sizeof(*req)) != 0) {
 388                         debug("unable construct SETUP td\n");
 389                         ehci_free(td, sizeof(*td));
 390                         goto fail;
 391                 }
 392                 *tdp = cpu_to_hc32((uint32_t) td);
 393                 tdp = &td->qt_next;
 394                 toggle = 1;
 395         }
 396
 397         if (length > 0 || req == NULL) {
 398                 td = ehci_alloc(sizeof(struct qTD), 32);
 399                 if (td == NULL) {
 400                         debug("unable to allocate DATA td\n");
 401                         goto fail;
 402                 }
 403                 td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 404                 td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 405                 token = (toggle << 31) |
 406                     (length << 16) |
 407                     ((req == NULL ? 1 : 0) << 15) |
 408                     (0 << 12) |
 409                     (3 << 10) |
 410                     ((usb_pipein(pipe) ? 1 : 0) << 8) | (0x80 << 0);
 411                 td->qt_token = cpu_to_hc32(token);
 412                 if (ehci_td_buffer(td, buffer, length) != 0) {
 413                         debug("unable construct DATA td\n");
 414                         ehci_free(td, sizeof(*td));
 415                         goto fail;
 416                 }
 417                 *tdp = cpu_to_hc32((uint32_t) td);
 418                 tdp = &td->qt_next;
 419         }
 420
 421         if (req != NULL) {
 422                 td = ehci_alloc(sizeof(struct qTD), 32);
 423                 if (td == NULL) {
 424                         debug("unable to allocate ACK td\n");
 425                         goto fail;
 426                 }
 427                 td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 428                 td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 429                 token = (toggle << 31) |
 430                     (0 << 16) |
 431                     (1 << 15) |
 432                     (0 << 12) |
 433                     (3 << 10) |
 434                     ((usb_pipein(pipe) ? 0 : 1) << 8) | (0x80 << 0);
 435                 td->qt_token = cpu_to_hc32(token);
 436                 *tdp = cpu_to_hc32((uint32_t) td);
 437                 tdp = &td->qt_next;
 438         }
 439
 440         qh_list.qh_link = cpu_to_hc32((uint32_t) qh | QH_LINK_TYPE_QH);
 441
 442         /* Flush dcache */
 443         ehci_flush_dcache(&qh_list);
 444
 445         usbsts = ehci_readl(&hcor->or_usbsts);
 446         ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f));
 447
 448         /* Enable async. schedule. */
 449         cmd = ehci_readl(&hcor->or_usbcmd);
 450         cmd |= CMD_ASE;
 451         ehci_writel(&hcor->or_usbcmd, cmd);
 452
 453         ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, STD_ASS,
 454                         100 * 1000);
 455         if (ret < 0) {
 456                 printf("EHCI fail timeout STD_ASS set\n");
 457                 goto fail;
 458         }
 459
 460         /* Wait for TDs to be processed. */
 461         ts = get_timer(0);
 462         vtd = td;
 463         timeout = USB_TIMEOUT_MS(pipe);
 464         do {
 465                 /* Invalidate dcache */
 466                 ehci_invalidate_dcache(&qh_list);
 467                 token = hc32_to_cpu(vtd->qt_token);
 468                 if (!(token & 0x80))
 469                         break;
 470                 WATCHDOG_RESET();
 471         } while (get_timer(ts) < timeout);
 472
 473         /* Check that the TD processing happened */
 474         if (token & 0x80) {
 475                 printf("EHCI timed out on TD - token=%#x\n", token);
 476         }
 477
 478         /* Disable async schedule. */
 479         cmd = ehci_readl(&hcor->or_usbcmd);
 480         cmd &= ~CMD_ASE;
 481         ehci_writel(&hcor->or_usbcmd, cmd);
 482
 483         ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, 0,
 484                         100 * 1000);
 485         if (ret < 0) {
 486                 printf("EHCI fail timeout STD_ASS reset\n");
 487                 goto fail;
 488         }
 489
 490         qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 491
 492         token = hc32_to_cpu(qh->qh_overlay.qt_token);
 493         if (!(token & 0x80)) {
 494                 debug("TOKEN=%#x\n", token);
 495                 switch (token & 0xfc) {
 496                 case 0:
 497                         toggle = token >> 31;
 498                         usb_settoggle(dev, usb_pipeendpoint(pipe),
 499                                        usb_pipeout(pipe), toggle);
 500                         dev->status = 0;
 501                         break;
 502                 case 0x40:
 503                         dev->status = USB_ST_STALLED;
 504                         break;
 505                 case 0xa0:
 506                 case 0x20:
 507                         dev->status = USB_ST_BUF_ERR;
 508                         break;
 509                 case 0x50:
 510                 case 0x10:
 511                         dev->status = USB_ST_BABBLE_DET;
 512                         break;
 513                 default:
 514                         dev->status = USB_ST_CRC_ERR;
 515                         if ((token & 0x40) == 0x40)
 516                                 dev->status |= USB_ST_STALLED;
 517                         break;
 518                 }
 519                 dev->act_len = length - ((token >> 16) & 0x7fff);
 520         } else {
 521                 dev->act_len = 0;
 522                 debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x\n",
 523                       dev->devnum, ehci_readl(&hcor->or_usbsts),
 524                       ehci_readl(&hcor->or_portsc[0]),
 525                       ehci_readl(&hcor->or_portsc[1]));
 526         }
 527
 528         return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
 529
 530 fail:
 531         td = (void *)hc32_to_cpu(qh->qh_overlay.qt_next);
 532         while (td != (void *)QT_NEXT_TERMINATE) {
 533                 qh->qh_overlay.qt_next = td->qt_next;
 534                 ehci_free(td, sizeof(*td));
 535                 td = (void *)hc32_to_cpu(qh->qh_overlay.qt_next);
 536         }
 537         ehci_free(qh, sizeof(*qh));
 538         return -1;
 539 }
 540
 541 static inline int min3(int a, int b, int c)
 542 {
 543
 544         if (b < a)
 545                 a = b;
 546         if (c < a)
 547                 a = c;
 548         return a;
 549 }
 550
 551 int
 552 ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
 553                  int length, struct devrequest *req)
 554 {
 555         uint8_t tmpbuf[4];
 556         u16 typeReq;
 557         void *srcptr = NULL;
 558         int len, srclen;
 559         uint32_t reg;
 560         uint32_t *status_reg;
 561
 562         if (le16_to_cpu(req->index) > CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS) {
 563                 printf("The request port(%d) is not configured\n",
 564                         le16_to_cpu(req->index) - 1);
 565                 return -1;
 566         }
 567         status_reg = (uint32_t *)&hcor->or_portsc[
 568                                                 le16_to_cpu(req->index) - 1];
 569         srclen = 0;
 570
 571         debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u\n",
 572               req->request, req->request,
 573               req->requesttype, req->requesttype,
 574               le16_to_cpu(req->value), le16_to_cpu(req->index));
 575
 576         typeReq = req->request | req->requesttype << 8;
 577
 578         switch (typeReq) {
 579         case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
 580                 switch (le16_to_cpu(req->value) >> 8) {
 581                 case USB_DT_DEVICE:
 582                         debug("USB_DT_DEVICE request\n");
 583                         srcptr = &descriptor.device;
 584                         srclen = 0x12;
 585                         break;
 586                 case USB_DT_CONFIG:
 587                         debug("USB_DT_CONFIG config\n");
 588                         srcptr = &descriptor.config;
 589                         srclen = 0x19;
 590                         break;
 591                 case USB_DT_STRING:
 592                         debug("USB_DT_STRING config\n");
 593                         switch (le16_to_cpu(req->value) & 0xff) {
 594                         case 0: /* Language */
 595                                 srcptr = "\4\3\1\0";
 596                                 srclen = 4;
 597                                 break;
 598                         case 1: /* Vendor */
 599                                 srcptr = "\16\3u\0-\0b\0o\0o\0t\0";
 600                                 srclen = 14;
 601                                 break;
 602                         case 2: /* Product */
 603                                 srcptr = "\52\3E\0H\0C\0I\0 "
 604                                          "\0H\0o\0s\0t\0 "
 605                                          "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0";
 606                                 srclen = 42;
 607                                 break;
 608                         default:
 609                                 debug("unknown value DT_STRING %x\n",
 610                                         le16_to_cpu(req->value));
 611                                 goto unknown;
 612                         }
 613                         break;
 614                 default:
 615                         debug("unknown value %x\n", le16_to_cpu(req->value));
 616                         goto unknown;
 617                 }
 618                 break;
 619         case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
 620                 switch (le16_to_cpu(req->value) >> 8) {
 621                 case USB_DT_HUB:
 622                         debug("USB_DT_HUB config\n");
 623                         srcptr = &descriptor.hub;
 624                         srclen = 0x8;
 625                         break;
 626                 default:
 627                         debug("unknown value %x\n", le16_to_cpu(req->value));
 628                         goto unknown;
 629                 }
 630                 break;
 631         case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
 632                 debug("USB_REQ_SET_ADDRESS\n");
 633                 rootdev = le16_to_cpu(req->value);
 634                 break;
 635         case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
 636                 debug("USB_REQ_SET_CONFIGURATION\n");
 637                 /* Nothing to do */
 638                 break;
 639         case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8):
 640                 tmpbuf[0] = 1;  /* USB_STATUS_SELFPOWERED */
 641                 tmpbuf[1] = 0;
 642                 srcptr = tmpbuf;
 643                 srclen = 2;
 644                 break;
 645         case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
 646                 memset(tmpbuf, 0, 4);
 647                 reg = ehci_readl(status_reg);
 648                 if (reg & EHCI_PS_CS)
 649                         tmpbuf[0] |= USB_PORT_STAT_CONNECTION;
 650                 if (reg & EHCI_PS_PE)
 651                         tmpbuf[0] |= USB_PORT_STAT_ENABLE;
 652                 if (reg & EHCI_PS_SUSP)
 653                         tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
 654                 if (reg & EHCI_PS_OCA)
 655                         tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
 656                 if (reg & EHCI_PS_PR)
 657                         tmpbuf[0] |= USB_PORT_STAT_RESET;
 658                 if (reg & EHCI_PS_PP)
 659                         tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
 660
 661                 if (ehci_is_TDI()) {
 662                         switch ((reg >> 26) & 3) {
 663                         case 0:
 664                                 break;
 665                         case 1:
 666                                 tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8;
 667                                 break;
 668                         case 2:
 669                         default:
 670                                 tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
 671                                 break;
 672                         }
 673                 } else {
 674                         tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
 675                 }
 676
 677                 if (reg & EHCI_PS_CSC)
 678                         tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION;
 679                 if (reg & EHCI_PS_PEC)
 680                         tmpbuf[2] |= USB_PORT_STAT_C_ENABLE;
 681                 if (reg & EHCI_PS_OCC)
 682                         tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT;
 683                 if (portreset & (1 << le16_to_cpu(req->index)))
 684                         tmpbuf[2] |= USB_PORT_STAT_C_RESET;
 685
 686                 srcptr = tmpbuf;
 687                 srclen = 4;
 688                 break;
 689         case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
 690                 reg = ehci_readl(status_reg);
 691                 reg &= ~EHCI_PS_CLEAR;
 692                 switch (le16_to_cpu(req->value)) {
 693                 case USB_PORT_FEAT_ENABLE:
 694                         reg |= EHCI_PS_PE;
 695                         ehci_writel(status_reg, reg);
 696                         break;
 697                 case USB_PORT_FEAT_POWER:
 698                         if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams))) {
 699                                 reg |= EHCI_PS_PP;
 700                                 ehci_writel(status_reg, reg);
 701                         }
 702                         break;
 703                 case USB_PORT_FEAT_RESET:
 704                         if ((reg & (EHCI_PS_PE | EHCI_PS_CS)) == EHCI_PS_CS &&
 705                             !ehci_is_TDI() &&
 706                             EHCI_PS_IS_LOWSPEED(reg)) {
 707                                 /* Low speed device, give up ownership. */
 708                                 debug("port %d low speed --> companion\n",
 709                                       req->index - 1);
 710                                 reg |= EHCI_PS_PO;
 711                                 ehci_writel(status_reg, reg);
 712                                 break;
 713                         } else {
 714                                 int ret;
 715
 716                                 reg |= EHCI_PS_PR;
 717                                 reg &= ~EHCI_PS_PE;
 718                                 ehci_writel(status_reg, reg);
 719                                 /*
 720                                  * caller must wait, then call GetPortStatus
 721                                  * usb 2.0 specification say 50 ms resets on
 722                                  * root
 723                                  */
 724                                 ehci_powerup_fixup(status_reg, &reg);
 725
 726                                 ehci_writel(status_reg, reg & ~EHCI_PS_PR);
 727                                 /*
 728                                  * A host controller must terminate the reset
 729                                  * and stabilize the state of the port within
 730                                  * 2 milliseconds
 731                                  */
 732                                 ret = handshake(status_reg, EHCI_PS_PR, 0,
 733                                                 2 * 1000);
 734                                 if (!ret)
 735                                         portreset |=
 736                                                 1 << le16_to_cpu(req->index);
 737                                 else
 738                                         printf("port(%d) reset error\n",
 739                                         le16_to_cpu(req->index) - 1);
 740                         }
 741                         break;
 742                 default:
 743                         debug("unknown feature %x\n", le16_to_cpu(req->value));
 744                         goto unknown;
 745                 }
 746                 /* unblock posted writes */
 747                 (void) ehci_readl(&hcor->or_usbcmd);
 748                 break;
 749         case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
 750                 reg = ehci_readl(status_reg);
 751                 switch (le16_to_cpu(req->value)) {
 752                 case USB_PORT_FEAT_ENABLE:
 753                         reg &= ~EHCI_PS_PE;
 754                         break;
 755                 case USB_PORT_FEAT_C_ENABLE:
 756                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_PE;
 757                         break;
 758                 case USB_PORT_FEAT_POWER:
 759                         if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams)))
 760                                 reg = reg & ~(EHCI_PS_CLEAR | EHCI_PS_PP);
 761                 case USB_PORT_FEAT_C_CONNECTION:
 762                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_CSC;
 763                         break;
 764                 case USB_PORT_FEAT_OVER_CURRENT:
 765                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_OCC;
 766                         break;
 767                 case USB_PORT_FEAT_C_RESET:
 768                         portreset &= ~(1 << le16_to_cpu(req->index));
 769                         break;
 770                 default:
 771                         debug("unknown feature %x\n", le16_to_cpu(req->value));
 772                         goto unknown;
 773                 }
 774                 ehci_writel(status_reg, reg);
 775                 /* unblock posted write */
 776                 (void) ehci_readl(&hcor->or_usbcmd);
 777                 break;
 778         default:
 779                 debug("Unknown request\n");
 780                 goto unknown;
 781         }
 782
 783         wait_ms(1);
 784         len = min3(srclen, le16_to_cpu(req->length), length);
 785         if (srcptr != NULL && len > 0)
 786                 memcpy(buffer, srcptr, len);
 787         else
 788                 debug("Len is 0\n");
 789
 790         dev->act_len = len;
 791         dev->status = 0;
 792         return 0;
 793
 794 unknown:
 795         debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x\n",
 796               req->requesttype, req->request, le16_to_cpu(req->value),
 797               le16_to_cpu(req->index), le16_to_cpu(req->length));
 798
 799         dev->act_len = 0;
 800         dev->status = USB_ST_STALLED;
 801         return -1;
 802 }
 803
 804 int usb_lowlevel_stop(void)
 805 {
 806         return ehci_hcd_stop();
 807 }
 808
 809 int usb_lowlevel_init(void)
 810 {
 811         uint32_t reg;
 812         uint32_t cmd;
 813
 814         if (ehci_hcd_init() != 0)
 815                 return -1;
 816
 817         /* EHCI spec section 4.1 */
 818         if (ehci_reset() != 0)
 819                 return -1;
 820
 821 #if defined(CONFIG_EHCI_HCD_INIT_AFTER_RESET)
 822         if (ehci_hcd_init() != 0)
 823                 return -1;
 824 #endif
 825
 826         /* Set head of reclaim list */
 827         memset(&qh_list, 0, sizeof(qh_list));
 828         qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 829         qh_list.qh_endpt1 = cpu_to_hc32((1 << 15) | (USB_SPEED_HIGH << 12));
 830         qh_list.qh_curtd = cpu_to_hc32(QT_NEXT_TERMINATE);
 831         qh_list.qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 832         qh_list.qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 833         qh_list.qh_overlay.qt_token = cpu_to_hc32(0x40);
 834
 835         /* Set async. queue head pointer. */
 836         ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list);
 837
 838         reg = ehci_readl(&hccr->cr_hcsparams);
 839         descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
 840         printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);
 841         /* Port Indicators */
 842         if (HCS_INDICATOR(reg))
 843                 descriptor.hub.wHubCharacteristics |= 0x80;
 844         /* Port Power Control */
 845         if (HCS_PPC(reg))
 846                 descriptor.hub.wHubCharacteristics |= 0x01;
 847
 848         /* Start the host controller. */
 849         cmd = ehci_readl(&hcor->or_usbcmd);
 850         /*
 851          * Philips, Intel, and maybe others need CMD_RUN before the
 852          * root hub will detect new devices (why?); NEC doesn't
 853          */
 854         cmd &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
 855         cmd |= CMD_RUN;
 856         ehci_writel(&hcor->or_usbcmd, cmd);
 857
 858         /* take control over the ports */
 859         cmd = ehci_readl(&hcor->or_configflag);
 860         cmd |= FLAG_CF;
 861         ehci_writel(&hcor->or_configflag, cmd);
 862         /* unblock posted write */
 863         cmd = ehci_readl(&hcor->or_usbcmd);
 864         wait_ms(5);
 865         reg = HC_VERSION(ehci_readl(&hccr->cr_capbase));
 866         printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff);
 867
 868         rootdev = 0;
 869
 870         return 0;
 871 }
 872
 873 int
 874 submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 875                 int length)
 876 {
 877
 878         if (usb_pipetype(pipe) != PIPE_BULK) {
 879                 debug("non-bulk pipe (type=%lu)", usb_pipetype(pipe));
 880                 return -1;
 881         }
 882         return ehci_submit_async(dev, pipe, buffer, length, NULL);
 883 }
 884
 885 int
 886 submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 887                    int length, struct devrequest *setup)
 888 {
 889
 890         if (usb_pipetype(pipe) != PIPE_CONTROL) {
 891                 debug("non-control pipe (type=%lu)", usb_pipetype(pipe));
 892                 return -1;
 893         }
 894
 895         if (usb_pipedevice(pipe) == rootdev) {
 896                 if (rootdev == 0)
 897                         dev->speed = USB_SPEED_HIGH;
 898                 return ehci_submit_root(dev, pipe, buffer, length, setup);
 899         }
 900         return ehci_submit_async(dev, pipe, buffer, length, setup);
 901 }
 902
 903 int
 904 submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 905                int length, int interval)
 906 {
 907
 908         debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
 909               dev, pipe, buffer, length, interval);
 910         return ehci_submit_async(dev, pipe, buffer, length, NULL);
 911 }
 912
 913 #ifdef CONFIG_SYS_USB_EVENT_POLL
 914 /*
 915  * This function polls for USB keyboard data.
 916  */
 917 void usb_event_poll()
 918 {
 919         struct stdio_dev *dev;
 920         struct usb_device *usb_kbd_dev;
 921         struct usb_interface *iface;
 922         struct usb_endpoint_descriptor *ep;
 923         int pipe;
 924         int maxp;
 925
 926         /* Get the pointer to USB Keyboard device pointer */
 927         dev = stdio_get_by_name("usbkbd");
 928         usb_kbd_dev = (struct usb_device *)dev->priv;
 929         iface = &usb_kbd_dev->config.if_desc[0];
 930         ep = &iface->ep_desc[0];
 931         pipe = usb_rcvintpipe(usb_kbd_dev, ep->bEndpointAddress);
 932
 933         /* Submit a interrupt transfer request */
 934         maxp = usb_maxpacket(usb_kbd_dev, pipe);
 935         usb_submit_int_msg(usb_kbd_dev, pipe, &new[0],
 936                         maxp > 8 ? 8 : maxp, ep->bInterval);
 937 }
 938 #endif /* CONFIG_SYS_USB_EVENT_POLL */