git.sur5r.net Git - u-boot/blob - 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 #if defined(CONFIG_EHCI_DCACHE)
 112 /*
 113  * Routines to handle (flush/invalidate) the dcache for the QH and qTD
 114  * structures and data buffers. This is needed on platforms using this
 115  * EHCI support with dcache enabled.
 116  */
 117 static void flush_invalidate(u32 addr, int size, int flush)
 118 {
 119         if (flush)
 120                 flush_dcache_range(addr, addr + size);
 121         else
 122                 invalidate_dcache_range(addr, addr + size);
 123 }
 124
 125 static void cache_qtd(struct qTD *qtd, int flush)
 126 {
 127         u32 *ptr = (u32 *)qtd->qt_buffer[0];
 128         int len = (qtd->qt_token & 0x7fff0000) >> 16;
 129
 130         flush_invalidate((u32)qtd, sizeof(struct qTD), flush);
 131         if (ptr && len)
 132                 flush_invalidate((u32)ptr, len, flush);
 133 }
 134
 135
 136 static inline struct QH *qh_addr(struct QH *qh)
 137 {
 138         return (struct QH *)((u32)qh & 0xffffffe0);
 139 }
 140
 141 static void cache_qh(struct QH *qh, int flush)
 142 {
 143         struct qTD *qtd;
 144         struct qTD *next;
 145         static struct qTD *first_qtd;
 146
 147         /*
 148          * Walk the QH list and flush/invalidate all entries
 149          */
 150         while (1) {
 151                 flush_invalidate((u32)qh_addr(qh), sizeof(struct QH), flush);
 152                 if ((u32)qh & QH_LINK_TYPE_QH)
 153                         break;
 154                 qh = qh_addr(qh);
 155                 qh = (struct QH *)qh->qh_link;
 156         }
 157         qh = qh_addr(qh);
 158
 159         /*
 160          * Save first qTD pointer, needed for invalidating pass on this QH
 161          */
 162         if (flush)
 163                 first_qtd = qtd = (struct qTD *)(*(u32 *)&qh->qh_overlay &
 164                                                  0xffffffe0);
 165         else
 166                 qtd = first_qtd;
 167
 168         /*
 169          * Walk the qTD list and flush/invalidate all entries
 170          */
 171         while (1) {
 172                 if (qtd == NULL)
 173                         break;
 174                 cache_qtd(qtd, flush);
 175                 next = (struct qTD *)((u32)qtd->qt_next & 0xffffffe0);
 176                 if (next == qtd)
 177                         break;
 178                 qtd = next;
 179         }
 180 }
 181
 182 static inline void ehci_flush_dcache(struct QH *qh)
 183 {
 184         cache_qh(qh, 1);
 185 }
 186
 187 static inline void ehci_invalidate_dcache(struct QH *qh)
 188 {
 189         cache_qh(qh, 0);
 190 }
 191 #else /* CONFIG_EHCI_DCACHE */
 192 /*
 193  *
 194  */
 195 static inline void ehci_flush_dcache(struct QH *qh)
 196 {
 197 }
 198
 199 static inline void ehci_invalidate_dcache(struct QH *qh)
 200 {
 201 }
 202 #endif /* CONFIG_EHCI_DCACHE */
 203
 204 void __ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
 205 {
 206         mdelay(50);
 207 }
 208
 209 void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
 210         __attribute__((weak, alias("__ehci_powerup_fixup")));
 211
 212 static int handshake(uint32_t *ptr, uint32_t mask, uint32_t done, int usec)
 213 {
 214         uint32_t result;
 215         do {
 216                 result = ehci_readl(ptr);
 217                 udelay(5);
 218                 if (result == ~(uint32_t)0)
 219                         return -1;
 220                 result &= mask;
 221                 if (result == done)
 222                         return 0;
 223                 usec--;
 224         } while (usec > 0);
 225         return -1;
 226 }
 227
 228 static int ehci_reset(void)
 229 {
 230         uint32_t cmd;
 231         uint32_t tmp;
 232         uint32_t *reg_ptr;
 233         int ret = 0;
 234
 235         cmd = ehci_readl(&hcor->or_usbcmd);
 236         cmd = (cmd & ~CMD_RUN) | CMD_RESET;
 237         ehci_writel(&hcor->or_usbcmd, cmd);
 238         ret = handshake((uint32_t *)&hcor->or_usbcmd, CMD_RESET, 0, 250 * 1000);
 239         if (ret < 0) {
 240                 printf("EHCI fail to reset\n");
 241                 goto out;
 242         }
 243
 244         if (ehci_is_TDI()) {
 245                 reg_ptr = (uint32_t *)((u8 *)hcor + USBMODE);
 246                 tmp = ehci_readl(reg_ptr);
 247                 tmp |= USBMODE_CM_HC;
 248 #if defined(CONFIG_EHCI_MMIO_BIG_ENDIAN)
 249                 tmp |= USBMODE_BE;
 250 #endif
 251                 ehci_writel(reg_ptr, tmp);
 252         }
 253
 254 #ifdef CONFIG_USB_EHCI_TXFIFO_THRESH
 255         cmd = ehci_readl(&hcor->or_txfilltuning);
 256         cmd &= ~TXFIFO_THRESH(0x3f);
 257         cmd |= TXFIFO_THRESH(CONFIG_USB_EHCI_TXFIFO_THRESH);
 258         ehci_writel(&hcor->or_txfilltuning, cmd);
 259 #endif
 260 out:
 261         return ret;
 262 }
 263
 264 static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
 265 {
 266         uint32_t addr, delta, next;
 267         int idx;
 268
 269         addr = (uint32_t) buf;
 270         idx = 0;
 271         while (idx < 5) {
 272                 td->qt_buffer[idx] = cpu_to_hc32(addr);
 273                 td->qt_buffer_hi[idx] = 0;
 274                 next = (addr + 4096) & ~4095;
 275                 delta = next - addr;
 276                 if (delta >= sz)
 277                         break;
 278                 sz -= delta;
 279                 addr = next;
 280                 idx++;
 281         }
 282
 283         if (idx == 5) {
 284                 debug("out of buffer pointers (%u bytes left)\n", sz);
 285                 return -1;
 286         }
 287
 288         return 0;
 289 }
 290
 291 static int
 292 ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 293                    int length, struct devrequest *req)
 294 {
 295         static struct QH qh __attribute__((aligned(32)));
 296         static struct qTD qtd[3] __attribute__((aligned (32)));
 297         int qtd_counter = 0;
 298
 299         volatile struct qTD *vtd;
 300         unsigned long ts;
 301         uint32_t *tdp;
 302         uint32_t endpt, token, usbsts;
 303         uint32_t c, toggle;
 304         uint32_t cmd;
 305         int timeout;
 306         int ret = 0;
 307
 308         debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
 309               buffer, length, req);
 310         if (req != NULL)
 311                 debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n",
 312                       req->request, req->request,
 313                       req->requesttype, req->requesttype,
 314                       le16_to_cpu(req->value), le16_to_cpu(req->value),
 315                       le16_to_cpu(req->index));
 316
 317         memset(&qh, 0, sizeof(struct QH));
 318         memset(qtd, 0, sizeof(qtd));
 319
 320         qh.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 321         c = (usb_pipespeed(pipe) != USB_SPEED_HIGH &&
 322              usb_pipeendpoint(pipe) == 0) ? 1 : 0;
 323         endpt = (8 << 28) |
 324             (c << 27) |
 325             (usb_maxpacket(dev, pipe) << 16) |
 326             (0 << 15) |
 327             (1 << 14) |
 328             (usb_pipespeed(pipe) << 12) |
 329             (usb_pipeendpoint(pipe) << 8) |
 330             (0 << 7) | (usb_pipedevice(pipe) << 0);
 331         qh.qh_endpt1 = cpu_to_hc32(endpt);
 332         endpt = (1 << 30) |
 333             (dev->portnr << 23) |
 334             (dev->parent->devnum << 16) | (0 << 8) | (0 << 0);
 335         qh.qh_endpt2 = cpu_to_hc32(endpt);
 336         qh.qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 337
 338         tdp = &qh.qh_overlay.qt_next;
 339
 340         toggle =
 341             usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
 342
 343         if (req != NULL) {
 344                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 345                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 346                 token = (0 << 31) |
 347                     (sizeof(*req) << 16) |
 348                     (0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0);
 349                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 350                 if (ehci_td_buffer(&qtd[qtd_counter], req, sizeof(*req)) != 0) {
 351                         debug("unable construct SETUP td\n");
 352                         goto fail;
 353                 }
 354                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 355                 tdp = &qtd[qtd_counter++].qt_next;
 356                 toggle = 1;
 357         }
 358
 359         if (length > 0 || req == NULL) {
 360                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 361                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 362                 token = (toggle << 31) |
 363                     (length << 16) |
 364                     ((req == NULL ? 1 : 0) << 15) |
 365                     (0 << 12) |
 366                     (3 << 10) |
 367                     ((usb_pipein(pipe) ? 1 : 0) << 8) | (0x80 << 0);
 368                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 369                 if (ehci_td_buffer(&qtd[qtd_counter], buffer, length) != 0) {
 370                         debug("unable construct DATA td\n");
 371                         goto fail;
 372                 }
 373                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 374                 tdp = &qtd[qtd_counter++].qt_next;
 375         }
 376
 377         if (req != NULL) {
 378                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 379                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 380                 token = (toggle << 31) |
 381                     (0 << 16) |
 382                     (1 << 15) |
 383                     (0 << 12) |
 384                     (3 << 10) |
 385                     ((usb_pipein(pipe) ? 0 : 1) << 8) | (0x80 << 0);
 386                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 387                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 388                 tdp = &qtd[qtd_counter++].qt_next;
 389         }
 390
 391         qh_list.qh_link = cpu_to_hc32((uint32_t)&qh | QH_LINK_TYPE_QH);
 392
 393         /* Flush dcache */
 394         ehci_flush_dcache(&qh_list);
 395
 396         usbsts = ehci_readl(&hcor->or_usbsts);
 397         ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f));
 398
 399         /* Enable async. schedule. */
 400         cmd = ehci_readl(&hcor->or_usbcmd);
 401         cmd |= CMD_ASE;
 402         ehci_writel(&hcor->or_usbcmd, cmd);
 403
 404         ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, STD_ASS,
 405                         100 * 1000);
 406         if (ret < 0) {
 407                 printf("EHCI fail timeout STD_ASS set\n");
 408                 goto fail;
 409         }
 410
 411         /* Wait for TDs to be processed. */
 412         ts = get_timer(0);
 413         vtd = &qtd[qtd_counter - 1];
 414         timeout = USB_TIMEOUT_MS(pipe);
 415         do {
 416                 /* Invalidate dcache */
 417                 ehci_invalidate_dcache(&qh_list);
 418                 token = hc32_to_cpu(vtd->qt_token);
 419                 if (!(token & 0x80))
 420                         break;
 421                 WATCHDOG_RESET();
 422         } while (get_timer(ts) < timeout);
 423
 424         /* Check that the TD processing happened */
 425         if (token & 0x80) {
 426                 printf("EHCI timed out on TD - token=%#x\n", token);
 427         }
 428
 429         /* Disable async schedule. */
 430         cmd = ehci_readl(&hcor->or_usbcmd);
 431         cmd &= ~CMD_ASE;
 432         ehci_writel(&hcor->or_usbcmd, cmd);
 433
 434         ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, 0,
 435                         100 * 1000);
 436         if (ret < 0) {
 437                 printf("EHCI fail timeout STD_ASS reset\n");
 438                 goto fail;
 439         }
 440
 441         qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 442
 443         token = hc32_to_cpu(qh.qh_overlay.qt_token);
 444         if (!(token & 0x80)) {
 445                 debug("TOKEN=%#x\n", token);
 446                 switch (token & 0xfc) {
 447                 case 0:
 448                         toggle = token >> 31;
 449                         usb_settoggle(dev, usb_pipeendpoint(pipe),
 450                                        usb_pipeout(pipe), toggle);
 451                         dev->status = 0;
 452                         break;
 453                 case 0x40:
 454                         dev->status = USB_ST_STALLED;
 455                         break;
 456                 case 0xa0:
 457                 case 0x20:
 458                         dev->status = USB_ST_BUF_ERR;
 459                         break;
 460                 case 0x50:
 461                 case 0x10:
 462                         dev->status = USB_ST_BABBLE_DET;
 463                         break;
 464                 default:
 465                         dev->status = USB_ST_CRC_ERR;
 466                         if ((token & 0x40) == 0x40)
 467                                 dev->status |= USB_ST_STALLED;
 468                         break;
 469                 }
 470                 dev->act_len = length - ((token >> 16) & 0x7fff);
 471         } else {
 472                 dev->act_len = 0;
 473                 debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x\n",
 474                       dev->devnum, ehci_readl(&hcor->or_usbsts),
 475                       ehci_readl(&hcor->or_portsc[0]),
 476                       ehci_readl(&hcor->or_portsc[1]));
 477         }
 478
 479         return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
 480
 481 fail:
 482         return -1;
 483 }
 484
 485 static inline int min3(int a, int b, int c)
 486 {
 487
 488         if (b < a)
 489                 a = b;
 490         if (c < a)
 491                 a = c;
 492         return a;
 493 }
 494
 495 int
 496 ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
 497                  int length, struct devrequest *req)
 498 {
 499         uint8_t tmpbuf[4];
 500         u16 typeReq;
 501         void *srcptr = NULL;
 502         int len, srclen;
 503         uint32_t reg;
 504         uint32_t *status_reg;
 505
 506         if (le16_to_cpu(req->index) > CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS) {
 507                 printf("The request port(%d) is not configured\n",
 508                         le16_to_cpu(req->index) - 1);
 509                 return -1;
 510         }
 511         status_reg = (uint32_t *)&hcor->or_portsc[
 512                                                 le16_to_cpu(req->index) - 1];
 513         srclen = 0;
 514
 515         debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u\n",
 516               req->request, req->request,
 517               req->requesttype, req->requesttype,
 518               le16_to_cpu(req->value), le16_to_cpu(req->index));
 519
 520         typeReq = req->request | req->requesttype << 8;
 521
 522         switch (typeReq) {
 523         case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
 524                 switch (le16_to_cpu(req->value) >> 8) {
 525                 case USB_DT_DEVICE:
 526                         debug("USB_DT_DEVICE request\n");
 527                         srcptr = &descriptor.device;
 528                         srclen = 0x12;
 529                         break;
 530                 case USB_DT_CONFIG:
 531                         debug("USB_DT_CONFIG config\n");
 532                         srcptr = &descriptor.config;
 533                         srclen = 0x19;
 534                         break;
 535                 case USB_DT_STRING:
 536                         debug("USB_DT_STRING config\n");
 537                         switch (le16_to_cpu(req->value) & 0xff) {
 538                         case 0: /* Language */
 539                                 srcptr = "\4\3\1\0";
 540                                 srclen = 4;
 541                                 break;
 542                         case 1: /* Vendor */
 543                                 srcptr = "\16\3u\0-\0b\0o\0o\0t\0";
 544                                 srclen = 14;
 545                                 break;
 546                         case 2: /* Product */
 547                                 srcptr = "\52\3E\0H\0C\0I\0 "
 548                                          "\0H\0o\0s\0t\0 "
 549                                          "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0";
 550                                 srclen = 42;
 551                                 break;
 552                         default:
 553                                 debug("unknown value DT_STRING %x\n",
 554                                         le16_to_cpu(req->value));
 555                                 goto unknown;
 556                         }
 557                         break;
 558                 default:
 559                         debug("unknown value %x\n", le16_to_cpu(req->value));
 560                         goto unknown;
 561                 }
 562                 break;
 563         case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
 564                 switch (le16_to_cpu(req->value) >> 8) {
 565                 case USB_DT_HUB:
 566                         debug("USB_DT_HUB config\n");
 567                         srcptr = &descriptor.hub;
 568                         srclen = 0x8;
 569                         break;
 570                 default:
 571                         debug("unknown value %x\n", le16_to_cpu(req->value));
 572                         goto unknown;
 573                 }
 574                 break;
 575         case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
 576                 debug("USB_REQ_SET_ADDRESS\n");
 577                 rootdev = le16_to_cpu(req->value);
 578                 break;
 579         case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
 580                 debug("USB_REQ_SET_CONFIGURATION\n");
 581                 /* Nothing to do */
 582                 break;
 583         case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8):
 584                 tmpbuf[0] = 1;  /* USB_STATUS_SELFPOWERED */
 585                 tmpbuf[1] = 0;
 586                 srcptr = tmpbuf;
 587                 srclen = 2;
 588                 break;
 589         case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
 590                 memset(tmpbuf, 0, 4);
 591                 reg = ehci_readl(status_reg);
 592                 if (reg & EHCI_PS_CS)
 593                         tmpbuf[0] |= USB_PORT_STAT_CONNECTION;
 594                 if (reg & EHCI_PS_PE)
 595                         tmpbuf[0] |= USB_PORT_STAT_ENABLE;
 596                 if (reg & EHCI_PS_SUSP)
 597                         tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
 598                 if (reg & EHCI_PS_OCA)
 599                         tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
 600                 if (reg & EHCI_PS_PR)
 601                         tmpbuf[0] |= USB_PORT_STAT_RESET;
 602                 if (reg & EHCI_PS_PP)
 603                         tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
 604
 605                 if (ehci_is_TDI()) {
 606                         switch ((reg >> 26) & 3) {
 607                         case 0:
 608                                 break;
 609                         case 1:
 610                                 tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8;
 611                                 break;
 612                         case 2:
 613                         default:
 614                                 tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
 615                                 break;
 616                         }
 617                 } else {
 618                         tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
 619                 }
 620
 621                 if (reg & EHCI_PS_CSC)
 622                         tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION;
 623                 if (reg & EHCI_PS_PEC)
 624                         tmpbuf[2] |= USB_PORT_STAT_C_ENABLE;
 625                 if (reg & EHCI_PS_OCC)
 626                         tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT;
 627                 if (portreset & (1 << le16_to_cpu(req->index)))
 628                         tmpbuf[2] |= USB_PORT_STAT_C_RESET;
 629
 630                 srcptr = tmpbuf;
 631                 srclen = 4;
 632                 break;
 633         case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
 634                 reg = ehci_readl(status_reg);
 635                 reg &= ~EHCI_PS_CLEAR;
 636                 switch (le16_to_cpu(req->value)) {
 637                 case USB_PORT_FEAT_ENABLE:
 638                         reg |= EHCI_PS_PE;
 639                         ehci_writel(status_reg, reg);
 640                         break;
 641                 case USB_PORT_FEAT_POWER:
 642                         if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams))) {
 643                                 reg |= EHCI_PS_PP;
 644                                 ehci_writel(status_reg, reg);
 645                         }
 646                         break;
 647                 case USB_PORT_FEAT_RESET:
 648                         if ((reg & (EHCI_PS_PE | EHCI_PS_CS)) == EHCI_PS_CS &&
 649                             !ehci_is_TDI() &&
 650                             EHCI_PS_IS_LOWSPEED(reg)) {
 651                                 /* Low speed device, give up ownership. */
 652                                 debug("port %d low speed --> companion\n",
 653                                       req->index - 1);
 654                                 reg |= EHCI_PS_PO;
 655                                 ehci_writel(status_reg, reg);
 656                                 break;
 657                         } else {
 658                                 int ret;
 659
 660                                 reg |= EHCI_PS_PR;
 661                                 reg &= ~EHCI_PS_PE;
 662                                 ehci_writel(status_reg, reg);
 663                                 /*
 664                                  * caller must wait, then call GetPortStatus
 665                                  * usb 2.0 specification say 50 ms resets on
 666                                  * root
 667                                  */
 668                                 ehci_powerup_fixup(status_reg, &reg);
 669
 670                                 ehci_writel(status_reg, reg & ~EHCI_PS_PR);
 671                                 /*
 672                                  * A host controller must terminate the reset
 673                                  * and stabilize the state of the port within
 674                                  * 2 milliseconds
 675                                  */
 676                                 ret = handshake(status_reg, EHCI_PS_PR, 0,
 677                                                 2 * 1000);
 678                                 if (!ret)
 679                                         portreset |=
 680                                                 1 << le16_to_cpu(req->index);
 681                                 else
 682                                         printf("port(%d) reset error\n",
 683                                         le16_to_cpu(req->index) - 1);
 684                         }
 685                         break;
 686                 default:
 687                         debug("unknown feature %x\n", le16_to_cpu(req->value));
 688                         goto unknown;
 689                 }
 690                 /* unblock posted writes */
 691                 (void) ehci_readl(&hcor->or_usbcmd);
 692                 break;
 693         case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
 694                 reg = ehci_readl(status_reg);
 695                 switch (le16_to_cpu(req->value)) {
 696                 case USB_PORT_FEAT_ENABLE:
 697                         reg &= ~EHCI_PS_PE;
 698                         break;
 699                 case USB_PORT_FEAT_C_ENABLE:
 700                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_PE;
 701                         break;
 702                 case USB_PORT_FEAT_POWER:
 703                         if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams)))
 704                                 reg = reg & ~(EHCI_PS_CLEAR | EHCI_PS_PP);
 705                 case USB_PORT_FEAT_C_CONNECTION:
 706                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_CSC;
 707                         break;
 708                 case USB_PORT_FEAT_OVER_CURRENT:
 709                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_OCC;
 710                         break;
 711                 case USB_PORT_FEAT_C_RESET:
 712                         portreset &= ~(1 << le16_to_cpu(req->index));
 713                         break;
 714                 default:
 715                         debug("unknown feature %x\n", le16_to_cpu(req->value));
 716                         goto unknown;
 717                 }
 718                 ehci_writel(status_reg, reg);
 719                 /* unblock posted write */
 720                 (void) ehci_readl(&hcor->or_usbcmd);
 721                 break;
 722         default:
 723                 debug("Unknown request\n");
 724                 goto unknown;
 725         }
 726
 727         mdelay(1);
 728         len = min3(srclen, le16_to_cpu(req->length), length);
 729         if (srcptr != NULL && len > 0)
 730                 memcpy(buffer, srcptr, len);
 731         else
 732                 debug("Len is 0\n");
 733
 734         dev->act_len = len;
 735         dev->status = 0;
 736         return 0;
 737
 738 unknown:
 739         debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x\n",
 740               req->requesttype, req->request, le16_to_cpu(req->value),
 741               le16_to_cpu(req->index), le16_to_cpu(req->length));
 742
 743         dev->act_len = 0;
 744         dev->status = USB_ST_STALLED;
 745         return -1;
 746 }
 747
 748 int usb_lowlevel_stop(void)
 749 {
 750         return ehci_hcd_stop();
 751 }
 752
 753 int usb_lowlevel_init(void)
 754 {
 755         uint32_t reg;
 756         uint32_t cmd;
 757
 758         if (ehci_hcd_init() != 0)
 759                 return -1;
 760
 761         /* EHCI spec section 4.1 */
 762         if (ehci_reset() != 0)
 763                 return -1;
 764
 765 #if defined(CONFIG_EHCI_HCD_INIT_AFTER_RESET)
 766         if (ehci_hcd_init() != 0)
 767                 return -1;
 768 #endif
 769
 770         /* Set head of reclaim list */
 771         memset(&qh_list, 0, sizeof(qh_list));
 772         qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
 773         qh_list.qh_endpt1 = cpu_to_hc32((1 << 15) | (USB_SPEED_HIGH << 12));
 774         qh_list.qh_curtd = cpu_to_hc32(QT_NEXT_TERMINATE);
 775         qh_list.qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 776         qh_list.qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 777         qh_list.qh_overlay.qt_token = cpu_to_hc32(0x40);
 778
 779         /* Set async. queue head pointer. */
 780         ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list);
 781
 782         reg = ehci_readl(&hccr->cr_hcsparams);
 783         descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
 784         printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);
 785         /* Port Indicators */
 786         if (HCS_INDICATOR(reg))
 787                 descriptor.hub.wHubCharacteristics |= 0x80;
 788         /* Port Power Control */
 789         if (HCS_PPC(reg))
 790                 descriptor.hub.wHubCharacteristics |= 0x01;
 791
 792         /* Start the host controller. */
 793         cmd = ehci_readl(&hcor->or_usbcmd);
 794         /*
 795          * Philips, Intel, and maybe others need CMD_RUN before the
 796          * root hub will detect new devices (why?); NEC doesn't
 797          */
 798         cmd &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
 799         cmd |= CMD_RUN;
 800         ehci_writel(&hcor->or_usbcmd, cmd);
 801
 802         /* take control over the ports */
 803         cmd = ehci_readl(&hcor->or_configflag);
 804         cmd |= FLAG_CF;
 805         ehci_writel(&hcor->or_configflag, cmd);
 806         /* unblock posted write */
 807         cmd = ehci_readl(&hcor->or_usbcmd);
 808         mdelay(5);
 809         reg = HC_VERSION(ehci_readl(&hccr->cr_capbase));
 810         printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff);
 811
 812         rootdev = 0;
 813
 814         return 0;
 815 }
 816
 817 int
 818 submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 819                 int length)
 820 {
 821
 822         if (usb_pipetype(pipe) != PIPE_BULK) {
 823                 debug("non-bulk pipe (type=%lu)", usb_pipetype(pipe));
 824                 return -1;
 825         }
 826         return ehci_submit_async(dev, pipe, buffer, length, NULL);
 827 }
 828
 829 int
 830 submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 831                    int length, struct devrequest *setup)
 832 {
 833
 834         if (usb_pipetype(pipe) != PIPE_CONTROL) {
 835                 debug("non-control pipe (type=%lu)", usb_pipetype(pipe));
 836                 return -1;
 837         }
 838
 839         if (usb_pipedevice(pipe) == rootdev) {
 840                 if (rootdev == 0)
 841                         dev->speed = USB_SPEED_HIGH;
 842                 return ehci_submit_root(dev, pipe, buffer, length, setup);
 843         }
 844         return ehci_submit_async(dev, pipe, buffer, length, setup);
 845 }
 846
 847 int
 848 submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 849                int length, int interval)
 850 {
 851
 852         debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
 853               dev, pipe, buffer, length, interval);
 854         return ehci_submit_async(dev, pipe, buffer, length, NULL);
 855 }