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
  30 #include "ehci.h"
  31
  32 int rootdev;
  33 struct ehci_hccr *hccr; /* R/O registers, not need for volatile */
  34 volatile struct ehci_hcor *hcor;
  35
  36 static uint16_t portreset;
  37 static struct QH qh_list __attribute__((aligned(32)));
  38
  39 static struct descriptor {
  40         struct usb_hub_descriptor hub;
  41         struct usb_device_descriptor device;
  42         struct usb_linux_config_descriptor config;
  43         struct usb_linux_interface_descriptor interface;
  44         struct usb_endpoint_descriptor endpoint;
  45 }  __attribute__ ((packed)) descriptor = {
  46         {
  47                 0x8,            /* bDescLength */
  48                 0x29,           /* bDescriptorType: hub descriptor */
  49                 2,              /* bNrPorts -- runtime modified */
  50                 0,              /* wHubCharacteristics */
  51                 10,             /* bPwrOn2PwrGood */
  52                 0,              /* bHubCntrCurrent */
  53                 {},             /* Device removable */
  54                 {}              /* at most 7 ports! XXX */
  55         },
  56         {
  57                 0x12,           /* bLength */
  58                 1,              /* bDescriptorType: UDESC_DEVICE */
  59                 cpu_to_le16(0x0200), /* bcdUSB: v2.0 */
  60                 9,              /* bDeviceClass: UDCLASS_HUB */
  61                 0,              /* bDeviceSubClass: UDSUBCLASS_HUB */
  62                 1,              /* bDeviceProtocol: UDPROTO_HSHUBSTT */
  63                 64,             /* bMaxPacketSize: 64 bytes */
  64                 0x0000,         /* idVendor */
  65                 0x0000,         /* idProduct */
  66                 cpu_to_le16(0x0100), /* bcdDevice */
  67                 1,              /* iManufacturer */
  68                 2,              /* iProduct */
  69                 0,              /* iSerialNumber */
  70                 1               /* bNumConfigurations: 1 */
  71         },
  72         {
  73                 0x9,
  74                 2,              /* bDescriptorType: UDESC_CONFIG */
  75                 cpu_to_le16(0x19),
  76                 1,              /* bNumInterface */
  77                 1,              /* bConfigurationValue */
  78                 0,              /* iConfiguration */
  79                 0x40,           /* bmAttributes: UC_SELF_POWER */
  80                 0               /* bMaxPower */
  81         },
  82         {
  83                 0x9,            /* bLength */
  84                 4,              /* bDescriptorType: UDESC_INTERFACE */
  85                 0,              /* bInterfaceNumber */
  86                 0,              /* bAlternateSetting */
  87                 1,              /* bNumEndpoints */
  88                 9,              /* bInterfaceClass: UICLASS_HUB */
  89                 0,              /* bInterfaceSubClass: UISUBCLASS_HUB */
  90                 0,              /* bInterfaceProtocol: UIPROTO_HSHUBSTT */
  91                 0               /* iInterface */
  92         },
  93         {
  94                 0x7,            /* bLength */
  95                 5,              /* bDescriptorType: UDESC_ENDPOINT */
  96                 0x81,           /* bEndpointAddress:
  97                                  * UE_DIR_IN | EHCI_INTR_ENDPT
  98                                  */
  99                 3,              /* bmAttributes: UE_INTERRUPT */
 100                 8,              /* wMaxPacketSize */
 101                 255             /* bInterval */
 102         },
 103 };
 104
 105 #if defined(CONFIG_EHCI_IS_TDI)
 106 #define ehci_is_TDI()   (1)
 107 #else
 108 #define ehci_is_TDI()   (0)
 109 #endif
 110
 111 void __ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
 112 {
 113         mdelay(50);
 114 }
 115
 116 void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
 117         __attribute__((weak, alias("__ehci_powerup_fixup")));
 118
 119 static int handshake(uint32_t *ptr, uint32_t mask, uint32_t done, int usec)
 120 {
 121         uint32_t result;
 122         do {
 123                 result = ehci_readl(ptr);
 124                 udelay(5);
 125                 if (result == ~(uint32_t)0)
 126                         return -1;
 127                 result &= mask;
 128                 if (result == done)
 129                         return 0;
 130                 usec--;
 131         } while (usec > 0);
 132         return -1;
 133 }
 134
 135 static int ehci_reset(void)
 136 {
 137         uint32_t cmd;
 138         uint32_t tmp;
 139         uint32_t *reg_ptr;
 140         int ret = 0;
 141
 142         cmd = ehci_readl(&hcor->or_usbcmd);
 143         cmd = (cmd & ~CMD_RUN) | CMD_RESET;
 144         ehci_writel(&hcor->or_usbcmd, cmd);
 145         ret = handshake((uint32_t *)&hcor->or_usbcmd, CMD_RESET, 0, 250 * 1000);
 146         if (ret < 0) {
 147                 printf("EHCI fail to reset\n");
 148                 goto out;
 149         }
 150
 151         if (ehci_is_TDI()) {
 152                 reg_ptr = (uint32_t *)((u8 *)hcor + USBMODE);
 153                 tmp = ehci_readl(reg_ptr);
 154                 tmp |= USBMODE_CM_HC;
 155 #if defined(CONFIG_EHCI_MMIO_BIG_ENDIAN)
 156                 tmp |= USBMODE_BE;
 157 #endif
 158                 ehci_writel(reg_ptr, tmp);
 159         }
 160
 161 #ifdef CONFIG_USB_EHCI_TXFIFO_THRESH
 162         cmd = ehci_readl(&hcor->or_txfilltuning);
 163         cmd &= ~TXFIFO_THRESH(0x3f);
 164         cmd |= TXFIFO_THRESH(CONFIG_USB_EHCI_TXFIFO_THRESH);
 165         ehci_writel(&hcor->or_txfilltuning, cmd);
 166 #endif
 167 out:
 168         return ret;
 169 }
 170
 171 static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
 172 {
 173         uint32_t delta, next;
 174         uint32_t addr = (uint32_t)buf;
 175         size_t rsz = roundup(sz, 32);
 176         int idx;
 177
 178         if (sz != rsz)
 179                 debug("EHCI-HCD: Misaligned buffer size (%08x)\n", sz);
 180
 181         if (addr & 31)
 182                 debug("EHCI-HCD: Misaligned buffer address (%p)\n", buf);
 183
 184         idx = 0;
 185         while (idx < 5) {
 186                 flush_dcache_range(addr, addr + rsz);
 187                 td->qt_buffer[idx] = cpu_to_hc32(addr);
 188                 td->qt_buffer_hi[idx] = 0;
 189                 next = (addr + 4096) & ~4095;
 190                 delta = next - addr;
 191                 if (delta >= sz)
 192                         break;
 193                 sz -= delta;
 194                 addr = next;
 195                 idx++;
 196         }
 197
 198         if (idx == 5) {
 199                 debug("out of buffer pointers (%u bytes left)\n", sz);
 200                 return -1;
 201         }
 202
 203         return 0;
 204 }
 205
 206 static int
 207 ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 208                    int length, struct devrequest *req)
 209 {
 210         static struct QH qh __attribute__((aligned(32)));
 211         static struct qTD qtd[3] __attribute__((aligned (32)));
 212         int qtd_counter = 0;
 213
 214         volatile struct qTD *vtd;
 215         unsigned long ts;
 216         uint32_t *tdp;
 217         uint32_t endpt, token, usbsts;
 218         uint32_t c, toggle;
 219         uint32_t cmd;
 220         int timeout;
 221         int ret = 0;
 222
 223         debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
 224               buffer, length, req);
 225         if (req != NULL)
 226                 debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n",
 227                       req->request, req->request,
 228                       req->requesttype, req->requesttype,
 229                       le16_to_cpu(req->value), le16_to_cpu(req->value),
 230                       le16_to_cpu(req->index));
 231
 232         memset(&qh, 0, sizeof(struct QH));
 233         memset(qtd, 0, sizeof(qtd));
 234
 235         toggle = usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
 236
 237         /*
 238          * Setup QH (3.6 in ehci-r10.pdf)
 239          *
 240          *   qh_link ................. 03-00 H
 241          *   qh_endpt1 ............... 07-04 H
 242          *   qh_endpt2 ............... 0B-08 H
 243          * - qh_curtd
 244          *   qh_overlay.qt_next ...... 13-10 H
 245          * - qh_overlay.qt_altnext
 246          */
 247         qh.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 248         c = (usb_pipespeed(pipe) != USB_SPEED_HIGH &&
 249              usb_pipeendpoint(pipe) == 0) ? 1 : 0;
 250         endpt = (8 << 28) |
 251             (c << 27) |
 252             (usb_maxpacket(dev, pipe) << 16) |
 253             (0 << 15) |
 254             (1 << 14) |
 255             (usb_pipespeed(pipe) << 12) |
 256             (usb_pipeendpoint(pipe) << 8) |
 257             (0 << 7) | (usb_pipedevice(pipe) << 0);
 258         qh.qh_endpt1 = cpu_to_hc32(endpt);
 259         endpt = (1 << 30) |
 260             (dev->portnr << 23) |
 261             (dev->parent->devnum << 16) | (0 << 8) | (0 << 0);
 262         qh.qh_endpt2 = cpu_to_hc32(endpt);
 263         qh.qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 264
 265         tdp = &qh.qh_overlay.qt_next;
 266
 267         if (req != NULL) {
 268                 /*
 269                  * Setup request qTD (3.5 in ehci-r10.pdf)
 270                  *
 271                  *   qt_next ................ 03-00 H
 272                  *   qt_altnext ............. 07-04 H
 273                  *   qt_token ............... 0B-08 H
 274                  *
 275                  *   [ buffer, buffer_hi ] loaded with "req".
 276                  */
 277                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 278                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 279                 token = (0 << 31) |
 280                     (sizeof(*req) << 16) |
 281                     (0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0);
 282                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 283                 if (ehci_td_buffer(&qtd[qtd_counter], req, sizeof(*req)) != 0) {
 284                         debug("unable construct SETUP td\n");
 285                         goto fail;
 286                 }
 287                 /* Update previous qTD! */
 288                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 289                 tdp = &qtd[qtd_counter++].qt_next;
 290                 toggle = 1;
 291         }
 292
 293         if (length > 0 || req == NULL) {
 294                 /*
 295                  * Setup request qTD (3.5 in ehci-r10.pdf)
 296                  *
 297                  *   qt_next ................ 03-00 H
 298                  *   qt_altnext ............. 07-04 H
 299                  *   qt_token ............... 0B-08 H
 300                  *
 301                  *   [ buffer, buffer_hi ] loaded with "buffer".
 302                  */
 303                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 304                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 305                 token = (toggle << 31) |
 306                     (length << 16) |
 307                     ((req == NULL ? 1 : 0) << 15) |
 308                     (0 << 12) |
 309                     (3 << 10) |
 310                     ((usb_pipein(pipe) ? 1 : 0) << 8) | (0x80 << 0);
 311                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 312                 if (ehci_td_buffer(&qtd[qtd_counter], buffer, length) != 0) {
 313                         debug("unable construct DATA td\n");
 314                         goto fail;
 315                 }
 316                 /* Update previous qTD! */
 317                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 318                 tdp = &qtd[qtd_counter++].qt_next;
 319         }
 320
 321         if (req != NULL) {
 322                 /*
 323                  * Setup request qTD (3.5 in ehci-r10.pdf)
 324                  *
 325                  *   qt_next ................ 03-00 H
 326                  *   qt_altnext ............. 07-04 H
 327                  *   qt_token ............... 0B-08 H
 328                  */
 329                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 330                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 331                 token = (toggle << 31) |
 332                     (0 << 16) |
 333                     (1 << 15) |
 334                     (0 << 12) |
 335                     (3 << 10) |
 336                     ((usb_pipein(pipe) ? 0 : 1) << 8) | (0x80 << 0);
 337                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 338                 /* Update previous qTD! */
 339                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 340                 tdp = &qtd[qtd_counter++].qt_next;
 341         }
 342
 343         qh_list.qh_link = cpu_to_hc32((uint32_t)&qh | QH_LINK_TYPE_QH);
 344
 345         /* Flush dcache */
 346         flush_dcache_range((uint32_t)&qh_list,
 347                 (uint32_t)&qh_list + sizeof(struct QH));
 348         flush_dcache_range((uint32_t)&qh, (uint32_t)&qh + sizeof(struct QH));
 349         flush_dcache_range((uint32_t)qtd, (uint32_t)qtd + sizeof(qtd));
 350
 351         usbsts = ehci_readl(&hcor->or_usbsts);
 352         ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f));
 353
 354         /* Enable async. schedule. */
 355         cmd = ehci_readl(&hcor->or_usbcmd);
 356         cmd |= CMD_ASE;
 357         ehci_writel(&hcor->or_usbcmd, cmd);
 358
 359         ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, STD_ASS,
 360                         100 * 1000);
 361         if (ret < 0) {
 362                 printf("EHCI fail timeout STD_ASS set\n");
 363                 goto fail;
 364         }
 365
 366         /* Wait for TDs to be processed. */
 367         ts = get_timer(0);
 368         vtd = &qtd[qtd_counter - 1];
 369         timeout = USB_TIMEOUT_MS(pipe);
 370         do {
 371                 /* Invalidate dcache */
 372                 invalidate_dcache_range((uint32_t)&qh_list,
 373                         (uint32_t)&qh_list + sizeof(struct QH));
 374                 invalidate_dcache_range((uint32_t)&qh,
 375                         (uint32_t)&qh + sizeof(struct QH));
 376                 invalidate_dcache_range((uint32_t)qtd,
 377                         (uint32_t)qtd + sizeof(qtd));
 378
 379                 token = hc32_to_cpu(vtd->qt_token);
 380                 if (!(token & 0x80))
 381                         break;
 382                 WATCHDOG_RESET();
 383         } while (get_timer(ts) < timeout);
 384
 385         /* Invalidate the memory area occupied by buffer */
 386         invalidate_dcache_range(((uint32_t)buffer & ~31),
 387                 ((uint32_t)buffer & ~31) + roundup(length, 32));
 388
 389         /* Check that the TD processing happened */
 390         if (token & 0x80) {
 391                 printf("EHCI timed out on TD - token=%#x\n", token);
 392         }
 393
 394         /* Disable async schedule. */
 395         cmd = ehci_readl(&hcor->or_usbcmd);
 396         cmd &= ~CMD_ASE;
 397         ehci_writel(&hcor->or_usbcmd, cmd);
 398
 399         ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, 0,
 400                         100 * 1000);
 401         if (ret < 0) {
 402                 printf("EHCI fail timeout STD_ASS reset\n");
 403                 goto fail;
 404         }
 405
 406         qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 407
 408         token = hc32_to_cpu(qh.qh_overlay.qt_token);
 409         if (!(token & 0x80)) {
 410                 debug("TOKEN=%#x\n", token);
 411                 switch (token & 0xfc) {
 412                 case 0:
 413                         toggle = token >> 31;
 414                         usb_settoggle(dev, usb_pipeendpoint(pipe),
 415                                        usb_pipeout(pipe), toggle);
 416                         dev->status = 0;
 417                         break;
 418                 case 0x40:
 419                         dev->status = USB_ST_STALLED;
 420                         break;
 421                 case 0xa0:
 422                 case 0x20:
 423                         dev->status = USB_ST_BUF_ERR;
 424                         break;
 425                 case 0x50:
 426                 case 0x10:
 427                         dev->status = USB_ST_BABBLE_DET;
 428                         break;
 429                 default:
 430                         dev->status = USB_ST_CRC_ERR;
 431                         if ((token & 0x40) == 0x40)
 432                                 dev->status |= USB_ST_STALLED;
 433                         break;
 434                 }
 435                 dev->act_len = length - ((token >> 16) & 0x7fff);
 436         } else {
 437                 dev->act_len = 0;
 438                 debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x\n",
 439                       dev->devnum, ehci_readl(&hcor->or_usbsts),
 440                       ehci_readl(&hcor->or_portsc[0]),
 441                       ehci_readl(&hcor->or_portsc[1]));
 442         }
 443
 444         return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
 445
 446 fail:
 447         return -1;
 448 }
 449
 450 static inline int min3(int a, int b, int c)
 451 {
 452
 453         if (b < a)
 454                 a = b;
 455         if (c < a)
 456                 a = c;
 457         return a;
 458 }
 459
 460 int
 461 ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
 462                  int length, struct devrequest *req)
 463 {
 464         uint8_t tmpbuf[4];
 465         u16 typeReq;
 466         void *srcptr = NULL;
 467         int len, srclen;
 468         uint32_t reg;
 469         uint32_t *status_reg;
 470
 471         if (le16_to_cpu(req->index) > CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS) {
 472                 printf("The request port(%d) is not configured\n",
 473                         le16_to_cpu(req->index) - 1);
 474                 return -1;
 475         }
 476         status_reg = (uint32_t *)&hcor->or_portsc[
 477                                                 le16_to_cpu(req->index) - 1];
 478         srclen = 0;
 479
 480         debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u\n",
 481               req->request, req->request,
 482               req->requesttype, req->requesttype,
 483               le16_to_cpu(req->value), le16_to_cpu(req->index));
 484
 485         typeReq = req->request | req->requesttype << 8;
 486
 487         switch (typeReq) {
 488         case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
 489                 switch (le16_to_cpu(req->value) >> 8) {
 490                 case USB_DT_DEVICE:
 491                         debug("USB_DT_DEVICE request\n");
 492                         srcptr = &descriptor.device;
 493                         srclen = 0x12;
 494                         break;
 495                 case USB_DT_CONFIG:
 496                         debug("USB_DT_CONFIG config\n");
 497                         srcptr = &descriptor.config;
 498                         srclen = 0x19;
 499                         break;
 500                 case USB_DT_STRING:
 501                         debug("USB_DT_STRING config\n");
 502                         switch (le16_to_cpu(req->value) & 0xff) {
 503                         case 0: /* Language */
 504                                 srcptr = "\4\3\1\0";
 505                                 srclen = 4;
 506                                 break;
 507                         case 1: /* Vendor */
 508                                 srcptr = "\16\3u\0-\0b\0o\0o\0t\0";
 509                                 srclen = 14;
 510                                 break;
 511                         case 2: /* Product */
 512                                 srcptr = "\52\3E\0H\0C\0I\0 "
 513                                          "\0H\0o\0s\0t\0 "
 514                                          "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0";
 515                                 srclen = 42;
 516                                 break;
 517                         default:
 518                                 debug("unknown value DT_STRING %x\n",
 519                                         le16_to_cpu(req->value));
 520                                 goto unknown;
 521                         }
 522                         break;
 523                 default:
 524                         debug("unknown value %x\n", le16_to_cpu(req->value));
 525                         goto unknown;
 526                 }
 527                 break;
 528         case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
 529                 switch (le16_to_cpu(req->value) >> 8) {
 530                 case USB_DT_HUB:
 531                         debug("USB_DT_HUB config\n");
 532                         srcptr = &descriptor.hub;
 533                         srclen = 0x8;
 534                         break;
 535                 default:
 536                         debug("unknown value %x\n", le16_to_cpu(req->value));
 537                         goto unknown;
 538                 }
 539                 break;
 540         case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
 541                 debug("USB_REQ_SET_ADDRESS\n");
 542                 rootdev = le16_to_cpu(req->value);
 543                 break;
 544         case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
 545                 debug("USB_REQ_SET_CONFIGURATION\n");
 546                 /* Nothing to do */
 547                 break;
 548         case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8):
 549                 tmpbuf[0] = 1;  /* USB_STATUS_SELFPOWERED */
 550                 tmpbuf[1] = 0;
 551                 srcptr = tmpbuf;
 552                 srclen = 2;
 553                 break;
 554         case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
 555                 memset(tmpbuf, 0, 4);
 556                 reg = ehci_readl(status_reg);
 557                 if (reg & EHCI_PS_CS)
 558                         tmpbuf[0] |= USB_PORT_STAT_CONNECTION;
 559                 if (reg & EHCI_PS_PE)
 560                         tmpbuf[0] |= USB_PORT_STAT_ENABLE;
 561                 if (reg & EHCI_PS_SUSP)
 562                         tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
 563                 if (reg & EHCI_PS_OCA)
 564                         tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
 565                 if (reg & EHCI_PS_PR)
 566                         tmpbuf[0] |= USB_PORT_STAT_RESET;
 567                 if (reg & EHCI_PS_PP)
 568                         tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
 569
 570                 if (ehci_is_TDI()) {
 571                         switch ((reg >> 26) & 3) {
 572                         case 0:
 573                                 break;
 574                         case 1:
 575                                 tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8;
 576                                 break;
 577                         case 2:
 578                         default:
 579                                 tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
 580                                 break;
 581                         }
 582                 } else {
 583                         tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
 584                 }
 585
 586                 if (reg & EHCI_PS_CSC)
 587                         tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION;
 588                 if (reg & EHCI_PS_PEC)
 589                         tmpbuf[2] |= USB_PORT_STAT_C_ENABLE;
 590                 if (reg & EHCI_PS_OCC)
 591                         tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT;
 592                 if (portreset & (1 << le16_to_cpu(req->index)))
 593                         tmpbuf[2] |= USB_PORT_STAT_C_RESET;
 594
 595                 srcptr = tmpbuf;
 596                 srclen = 4;
 597                 break;
 598         case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
 599                 reg = ehci_readl(status_reg);
 600                 reg &= ~EHCI_PS_CLEAR;
 601                 switch (le16_to_cpu(req->value)) {
 602                 case USB_PORT_FEAT_ENABLE:
 603                         reg |= EHCI_PS_PE;
 604                         ehci_writel(status_reg, reg);
 605                         break;
 606                 case USB_PORT_FEAT_POWER:
 607                         if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams))) {
 608                                 reg |= EHCI_PS_PP;
 609                                 ehci_writel(status_reg, reg);
 610                         }
 611                         break;
 612                 case USB_PORT_FEAT_RESET:
 613                         if ((reg & (EHCI_PS_PE | EHCI_PS_CS)) == EHCI_PS_CS &&
 614                             !ehci_is_TDI() &&
 615                             EHCI_PS_IS_LOWSPEED(reg)) {
 616                                 /* Low speed device, give up ownership. */
 617                                 debug("port %d low speed --> companion\n",
 618                                       req->index - 1);
 619                                 reg |= EHCI_PS_PO;
 620                                 ehci_writel(status_reg, reg);
 621                                 break;
 622                         } else {
 623                                 int ret;
 624
 625                                 reg |= EHCI_PS_PR;
 626                                 reg &= ~EHCI_PS_PE;
 627                                 ehci_writel(status_reg, reg);
 628                                 /*
 629                                  * caller must wait, then call GetPortStatus
 630                                  * usb 2.0 specification say 50 ms resets on
 631                                  * root
 632                                  */
 633                                 ehci_powerup_fixup(status_reg, &reg);
 634
 635                                 ehci_writel(status_reg, reg & ~EHCI_PS_PR);
 636                                 /*
 637                                  * A host controller must terminate the reset
 638                                  * and stabilize the state of the port within
 639                                  * 2 milliseconds
 640                                  */
 641                                 ret = handshake(status_reg, EHCI_PS_PR, 0,
 642                                                 2 * 1000);
 643                                 if (!ret)
 644                                         portreset |=
 645                                                 1 << le16_to_cpu(req->index);
 646                                 else
 647                                         printf("port(%d) reset error\n",
 648                                         le16_to_cpu(req->index) - 1);
 649                         }
 650                         break;
 651                 default:
 652                         debug("unknown feature %x\n", le16_to_cpu(req->value));
 653                         goto unknown;
 654                 }
 655                 /* unblock posted writes */
 656                 (void) ehci_readl(&hcor->or_usbcmd);
 657                 break;
 658         case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
 659                 reg = ehci_readl(status_reg);
 660                 switch (le16_to_cpu(req->value)) {
 661                 case USB_PORT_FEAT_ENABLE:
 662                         reg &= ~EHCI_PS_PE;
 663                         break;
 664                 case USB_PORT_FEAT_C_ENABLE:
 665                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_PE;
 666                         break;
 667                 case USB_PORT_FEAT_POWER:
 668                         if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams)))
 669                                 reg = reg & ~(EHCI_PS_CLEAR | EHCI_PS_PP);
 670                 case USB_PORT_FEAT_C_CONNECTION:
 671                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_CSC;
 672                         break;
 673                 case USB_PORT_FEAT_OVER_CURRENT:
 674                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_OCC;
 675                         break;
 676                 case USB_PORT_FEAT_C_RESET:
 677                         portreset &= ~(1 << le16_to_cpu(req->index));
 678                         break;
 679                 default:
 680                         debug("unknown feature %x\n", le16_to_cpu(req->value));
 681                         goto unknown;
 682                 }
 683                 ehci_writel(status_reg, reg);
 684                 /* unblock posted write */
 685                 (void) ehci_readl(&hcor->or_usbcmd);
 686                 break;
 687         default:
 688                 debug("Unknown request\n");
 689                 goto unknown;
 690         }
 691
 692         mdelay(1);
 693         len = min3(srclen, le16_to_cpu(req->length), length);
 694         if (srcptr != NULL && len > 0)
 695                 memcpy(buffer, srcptr, len);
 696         else
 697                 debug("Len is 0\n");
 698
 699         dev->act_len = len;
 700         dev->status = 0;
 701         return 0;
 702
 703 unknown:
 704         debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x\n",
 705               req->requesttype, req->request, le16_to_cpu(req->value),
 706               le16_to_cpu(req->index), le16_to_cpu(req->length));
 707
 708         dev->act_len = 0;
 709         dev->status = USB_ST_STALLED;
 710         return -1;
 711 }
 712
 713 int usb_lowlevel_stop(void)
 714 {
 715         return ehci_hcd_stop();
 716 }
 717
 718 int usb_lowlevel_init(void)
 719 {
 720         uint32_t reg;
 721         uint32_t cmd;
 722
 723         if (ehci_hcd_init() != 0)
 724                 return -1;
 725
 726         /* EHCI spec section 4.1 */
 727         if (ehci_reset() != 0)
 728                 return -1;
 729
 730 #if defined(CONFIG_EHCI_HCD_INIT_AFTER_RESET)
 731         if (ehci_hcd_init() != 0)
 732                 return -1;
 733 #endif
 734
 735         /* Set head of reclaim list */
 736         memset(&qh_list, 0, sizeof(qh_list));
 737         qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 738         qh_list.qh_endpt1 = cpu_to_hc32((1 << 15) | (USB_SPEED_HIGH << 12));
 739         qh_list.qh_curtd = cpu_to_hc32(QT_NEXT_TERMINATE);
 740         qh_list.qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 741         qh_list.qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 742         qh_list.qh_overlay.qt_token = cpu_to_hc32(0x40);
 743
 744         /* Set async. queue head pointer. */
 745         ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list);
 746
 747         reg = ehci_readl(&hccr->cr_hcsparams);
 748         descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
 749         printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);
 750         /* Port Indicators */
 751         if (HCS_INDICATOR(reg))
 752                 descriptor.hub.wHubCharacteristics |= 0x80;
 753         /* Port Power Control */
 754         if (HCS_PPC(reg))
 755                 descriptor.hub.wHubCharacteristics |= 0x01;
 756
 757         /* Start the host controller. */
 758         cmd = ehci_readl(&hcor->or_usbcmd);
 759         /*
 760          * Philips, Intel, and maybe others need CMD_RUN before the
 761          * root hub will detect new devices (why?); NEC doesn't
 762          */
 763         cmd &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
 764         cmd |= CMD_RUN;
 765         ehci_writel(&hcor->or_usbcmd, cmd);
 766
 767         /* take control over the ports */
 768         cmd = ehci_readl(&hcor->or_configflag);
 769         cmd |= FLAG_CF;
 770         ehci_writel(&hcor->or_configflag, cmd);
 771         /* unblock posted write */
 772         cmd = ehci_readl(&hcor->or_usbcmd);
 773         mdelay(5);
 774         reg = HC_VERSION(ehci_readl(&hccr->cr_capbase));
 775         printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff);
 776
 777         rootdev = 0;
 778
 779         return 0;
 780 }
 781
 782 int
 783 submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 784                 int length)
 785 {
 786
 787         if (usb_pipetype(pipe) != PIPE_BULK) {
 788                 debug("non-bulk pipe (type=%lu)", usb_pipetype(pipe));
 789                 return -1;
 790         }
 791         return ehci_submit_async(dev, pipe, buffer, length, NULL);
 792 }
 793
 794 int
 795 submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 796                    int length, struct devrequest *setup)
 797 {
 798
 799         if (usb_pipetype(pipe) != PIPE_CONTROL) {
 800                 debug("non-control pipe (type=%lu)", usb_pipetype(pipe));
 801                 return -1;
 802         }
 803
 804         if (usb_pipedevice(pipe) == rootdev) {
 805                 if (rootdev == 0)
 806                         dev->speed = USB_SPEED_HIGH;
 807                 return ehci_submit_root(dev, pipe, buffer, length, setup);
 808         }
 809         return ehci_submit_async(dev, pipe, buffer, length, setup);
 810 }
 811
 812 int
 813 submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 814                int length, int interval)
 815 {
 816
 817         debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
 818               dev, pipe, buffer, length, interval);
 819         return ehci_submit_async(dev, pipe, buffer, length, NULL);
 820 }