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 DEFINE_ALIGN_BUFFER(struct QH, qh_list, 1, USB_DMA_MINALIGN);
  38
  39 #define ALIGN_END_ADDR(type, ptr, size)                 \
  40         ((uint32_t)(ptr) + roundup((size) * sizeof(type), USB_DMA_MINALIGN))
  41
  42 static struct descriptor {
  43         struct usb_hub_descriptor hub;
  44         struct usb_device_descriptor device;
  45         struct usb_linux_config_descriptor config;
  46         struct usb_linux_interface_descriptor interface;
  47         struct usb_endpoint_descriptor endpoint;
  48 }  __attribute__ ((packed)) descriptor = {
  49         {
  50                 0x8,            /* bDescLength */
  51                 0x29,           /* bDescriptorType: hub descriptor */
  52                 2,              /* bNrPorts -- runtime modified */
  53                 0,              /* wHubCharacteristics */
  54                 10,             /* bPwrOn2PwrGood */
  55                 0,              /* bHubCntrCurrent */
  56                 {},             /* Device removable */
  57                 {}              /* at most 7 ports! XXX */
  58         },
  59         {
  60                 0x12,           /* bLength */
  61                 1,              /* bDescriptorType: UDESC_DEVICE */
  62                 cpu_to_le16(0x0200), /* bcdUSB: v2.0 */
  63                 9,              /* bDeviceClass: UDCLASS_HUB */
  64                 0,              /* bDeviceSubClass: UDSUBCLASS_HUB */
  65                 1,              /* bDeviceProtocol: UDPROTO_HSHUBSTT */
  66                 64,             /* bMaxPacketSize: 64 bytes */
  67                 0x0000,         /* idVendor */
  68                 0x0000,         /* idProduct */
  69                 cpu_to_le16(0x0100), /* bcdDevice */
  70                 1,              /* iManufacturer */
  71                 2,              /* iProduct */
  72                 0,              /* iSerialNumber */
  73                 1               /* bNumConfigurations: 1 */
  74         },
  75         {
  76                 0x9,
  77                 2,              /* bDescriptorType: UDESC_CONFIG */
  78                 cpu_to_le16(0x19),
  79                 1,              /* bNumInterface */
  80                 1,              /* bConfigurationValue */
  81                 0,              /* iConfiguration */
  82                 0x40,           /* bmAttributes: UC_SELF_POWER */
  83                 0               /* bMaxPower */
  84         },
  85         {
  86                 0x9,            /* bLength */
  87                 4,              /* bDescriptorType: UDESC_INTERFACE */
  88                 0,              /* bInterfaceNumber */
  89                 0,              /* bAlternateSetting */
  90                 1,              /* bNumEndpoints */
  91                 9,              /* bInterfaceClass: UICLASS_HUB */
  92                 0,              /* bInterfaceSubClass: UISUBCLASS_HUB */
  93                 0,              /* bInterfaceProtocol: UIPROTO_HSHUBSTT */
  94                 0               /* iInterface */
  95         },
  96         {
  97                 0x7,            /* bLength */
  98                 5,              /* bDescriptorType: UDESC_ENDPOINT */
  99                 0x81,           /* bEndpointAddress:
 100                                  * UE_DIR_IN | EHCI_INTR_ENDPT
 101                                  */
 102                 3,              /* bmAttributes: UE_INTERRUPT */
 103                 8,              /* wMaxPacketSize */
 104                 255             /* bInterval */
 105         },
 106 };
 107
 108 #if defined(CONFIG_EHCI_IS_TDI)
 109 #define ehci_is_TDI()   (1)
 110 #else
 111 #define ehci_is_TDI()   (0)
 112 #endif
 113
 114 void __ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
 115 {
 116         mdelay(50);
 117 }
 118
 119 void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
 120         __attribute__((weak, alias("__ehci_powerup_fixup")));
 121
 122 static int handshake(uint32_t *ptr, uint32_t mask, uint32_t done, int usec)
 123 {
 124         uint32_t result;
 125         do {
 126                 result = ehci_readl(ptr);
 127                 udelay(5);
 128                 if (result == ~(uint32_t)0)
 129                         return -1;
 130                 result &= mask;
 131                 if (result == done)
 132                         return 0;
 133                 usec--;
 134         } while (usec > 0);
 135         return -1;
 136 }
 137
 138 static int ehci_reset(void)
 139 {
 140         uint32_t cmd;
 141         uint32_t tmp;
 142         uint32_t *reg_ptr;
 143         int ret = 0;
 144
 145         cmd = ehci_readl(&hcor->or_usbcmd);
 146         cmd = (cmd & ~CMD_RUN) | CMD_RESET;
 147         ehci_writel(&hcor->or_usbcmd, cmd);
 148         ret = handshake((uint32_t *)&hcor->or_usbcmd, CMD_RESET, 0, 250 * 1000);
 149         if (ret < 0) {
 150                 printf("EHCI fail to reset\n");
 151                 goto out;
 152         }
 153
 154         if (ehci_is_TDI()) {
 155                 reg_ptr = (uint32_t *)((u8 *)hcor + USBMODE);
 156                 tmp = ehci_readl(reg_ptr);
 157                 tmp |= USBMODE_CM_HC;
 158 #if defined(CONFIG_EHCI_MMIO_BIG_ENDIAN)
 159                 tmp |= USBMODE_BE;
 160 #endif
 161                 ehci_writel(reg_ptr, tmp);
 162         }
 163
 164 #ifdef CONFIG_USB_EHCI_TXFIFO_THRESH
 165         cmd = ehci_readl(&hcor->or_txfilltuning);
 166         cmd &= ~TXFIFO_THRESH(0x3f);
 167         cmd |= TXFIFO_THRESH(CONFIG_USB_EHCI_TXFIFO_THRESH);
 168         ehci_writel(&hcor->or_txfilltuning, cmd);
 169 #endif
 170 out:
 171         return ret;
 172 }
 173
 174 static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
 175 {
 176         uint32_t delta, next;
 177         uint32_t addr = (uint32_t)buf;
 178         size_t rsz = roundup(sz, 32);
 179         int idx;
 180
 181         if (sz != rsz)
 182                 debug("EHCI-HCD: Misaligned buffer size (%08x)\n", sz);
 183
 184         if (addr & 31)
 185                 debug("EHCI-HCD: Misaligned buffer address (%p)\n", buf);
 186
 187         idx = 0;
 188         while (idx < 5) {
 189                 flush_dcache_range(addr, addr + rsz);
 190                 td->qt_buffer[idx] = cpu_to_hc32(addr);
 191                 td->qt_buffer_hi[idx] = 0;
 192                 next = (addr + 4096) & ~4095;
 193                 delta = next - addr;
 194                 if (delta >= sz)
 195                         break;
 196                 sz -= delta;
 197                 addr = next;
 198                 idx++;
 199         }
 200
 201         if (idx == 5) {
 202                 debug("out of buffer pointers (%u bytes left)\n", sz);
 203                 return -1;
 204         }
 205
 206         return 0;
 207 }
 208
 209 static int
 210 ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
 211                    int length, struct devrequest *req)
 212 {
 213         ALLOC_ALIGN_BUFFER(struct QH, qh, 1, USB_DMA_MINALIGN);
 214         ALLOC_ALIGN_BUFFER(struct qTD, qtd, 3, USB_DMA_MINALIGN);
 215         int qtd_counter = 0;
 216
 217         volatile struct qTD *vtd;
 218         unsigned long ts;
 219         uint32_t *tdp;
 220         uint32_t endpt, token, usbsts;
 221         uint32_t c, toggle;
 222         uint32_t cmd;
 223         int timeout;
 224         int ret = 0;
 225
 226         debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
 227               buffer, length, req);
 228         if (req != NULL)
 229                 debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n",
 230                       req->request, req->request,
 231                       req->requesttype, req->requesttype,
 232                       le16_to_cpu(req->value), le16_to_cpu(req->value),
 233                       le16_to_cpu(req->index));
 234
 235         memset(qh, 0, sizeof(struct QH));
 236         memset(qtd, 0, 3 * sizeof(*qtd));
 237
 238         toggle = usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
 239
 240         /*
 241          * Setup QH (3.6 in ehci-r10.pdf)
 242          *
 243          *   qh_link ................. 03-00 H
 244          *   qh_endpt1 ............... 07-04 H
 245          *   qh_endpt2 ............... 0B-08 H
 246          * - qh_curtd
 247          *   qh_overlay.qt_next ...... 13-10 H
 248          * - qh_overlay.qt_altnext
 249          */
 250         qh->qh_link = cpu_to_hc32((uint32_t)qh_list | QH_LINK_TYPE_QH);
 251         c = (usb_pipespeed(pipe) != USB_SPEED_HIGH &&
 252              usb_pipeendpoint(pipe) == 0) ? 1 : 0;
 253         endpt = (8 << 28) |
 254             (c << 27) |
 255             (usb_maxpacket(dev, pipe) << 16) |
 256             (0 << 15) |
 257             (1 << 14) |
 258             (usb_pipespeed(pipe) << 12) |
 259             (usb_pipeendpoint(pipe) << 8) |
 260             (0 << 7) | (usb_pipedevice(pipe) << 0);
 261         qh->qh_endpt1 = cpu_to_hc32(endpt);
 262         endpt = (1 << 30) |
 263             (dev->portnr << 23) |
 264             (dev->parent->devnum << 16) | (0 << 8) | (0 << 0);
 265         qh->qh_endpt2 = cpu_to_hc32(endpt);
 266         qh->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 267
 268         tdp = &qh->qh_overlay.qt_next;
 269
 270         if (req != NULL) {
 271                 /*
 272                  * Setup request qTD (3.5 in ehci-r10.pdf)
 273                  *
 274                  *   qt_next ................ 03-00 H
 275                  *   qt_altnext ............. 07-04 H
 276                  *   qt_token ............... 0B-08 H
 277                  *
 278                  *   [ buffer, buffer_hi ] loaded with "req".
 279                  */
 280                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 281                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 282                 token = (0 << 31) |
 283                     (sizeof(*req) << 16) |
 284                     (0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0);
 285                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 286                 if (ehci_td_buffer(&qtd[qtd_counter], req, sizeof(*req)) != 0) {
 287                         debug("unable construct SETUP td\n");
 288                         goto fail;
 289                 }
 290                 /* Update previous qTD! */
 291                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 292                 tdp = &qtd[qtd_counter++].qt_next;
 293                 toggle = 1;
 294         }
 295
 296         if (length > 0 || req == NULL) {
 297                 /*
 298                  * Setup request qTD (3.5 in ehci-r10.pdf)
 299                  *
 300                  *   qt_next ................ 03-00 H
 301                  *   qt_altnext ............. 07-04 H
 302                  *   qt_token ............... 0B-08 H
 303                  *
 304                  *   [ buffer, buffer_hi ] loaded with "buffer".
 305                  */
 306                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 307                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 308                 token = (toggle << 31) |
 309                     (length << 16) |
 310                     ((req == NULL ? 1 : 0) << 15) |
 311                     (0 << 12) |
 312                     (3 << 10) |
 313                     ((usb_pipein(pipe) ? 1 : 0) << 8) | (0x80 << 0);
 314                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 315                 if (ehci_td_buffer(&qtd[qtd_counter], buffer, length) != 0) {
 316                         debug("unable construct DATA td\n");
 317                         goto fail;
 318                 }
 319                 /* Update previous qTD! */
 320                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 321                 tdp = &qtd[qtd_counter++].qt_next;
 322         }
 323
 324         if (req != NULL) {
 325                 /*
 326                  * Setup request qTD (3.5 in ehci-r10.pdf)
 327                  *
 328                  *   qt_next ................ 03-00 H
 329                  *   qt_altnext ............. 07-04 H
 330                  *   qt_token ............... 0B-08 H
 331                  */
 332                 qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 333                 qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 334                 token = (toggle << 31) |
 335                     (0 << 16) |
 336                     (1 << 15) |
 337                     (0 << 12) |
 338                     (3 << 10) |
 339                     ((usb_pipein(pipe) ? 0 : 1) << 8) | (0x80 << 0);
 340                 qtd[qtd_counter].qt_token = cpu_to_hc32(token);
 341                 /* Update previous qTD! */
 342                 *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]);
 343                 tdp = &qtd[qtd_counter++].qt_next;
 344         }
 345
 346         qh_list->qh_link = cpu_to_hc32((uint32_t)qh | QH_LINK_TYPE_QH);
 347
 348         /* Flush dcache */
 349         flush_dcache_range((uint32_t)qh_list,
 350                 ALIGN_END_ADDR(struct QH, qh_list, 1));
 351         flush_dcache_range((uint32_t)qh, ALIGN_END_ADDR(struct QH, qh, 1));
 352         flush_dcache_range((uint32_t)qtd, ALIGN_END_ADDR(struct qTD, qtd, 3));
 353
 354         /* Set async. queue head pointer. */
 355         ehci_writel(&hcor->or_asynclistaddr, (uint32_t)qh_list);
 356
 357         usbsts = ehci_readl(&hcor->or_usbsts);
 358         ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f));
 359
 360         /* Enable async. schedule. */
 361         cmd = ehci_readl(&hcor->or_usbcmd);
 362         cmd |= CMD_ASE;
 363         ehci_writel(&hcor->or_usbcmd, cmd);
 364
 365         ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, STD_ASS,
 366                         100 * 1000);
 367         if (ret < 0) {
 368                 printf("EHCI fail timeout STD_ASS set\n");
 369                 goto fail;
 370         }
 371
 372         /* Wait for TDs to be processed. */
 373         ts = get_timer(0);
 374         vtd = &qtd[qtd_counter - 1];
 375         timeout = USB_TIMEOUT_MS(pipe);
 376         do {
 377                 /* Invalidate dcache */
 378                 invalidate_dcache_range((uint32_t)qh_list,
 379                         ALIGN_END_ADDR(struct QH, qh_list, 1));
 380                 invalidate_dcache_range((uint32_t)qh,
 381                         ALIGN_END_ADDR(struct QH, qh, 1));
 382                 invalidate_dcache_range((uint32_t)qtd,
 383                         ALIGN_END_ADDR(struct qTD, qtd, 3));
 384
 385                 token = hc32_to_cpu(vtd->qt_token);
 386                 if (!(token & 0x80))
 387                         break;
 388                 WATCHDOG_RESET();
 389         } while (get_timer(ts) < timeout);
 390
 391         /* Invalidate the memory area occupied by buffer */
 392         invalidate_dcache_range(((uint32_t)buffer & ~31),
 393                 ((uint32_t)buffer & ~31) + roundup(length, 32));
 394
 395         /* Check that the TD processing happened */
 396         if (token & 0x80) {
 397                 printf("EHCI timed out on TD - token=%#x\n", token);
 398         }
 399
 400         /* Disable async schedule. */
 401         cmd = ehci_readl(&hcor->or_usbcmd);
 402         cmd &= ~CMD_ASE;
 403         ehci_writel(&hcor->or_usbcmd, cmd);
 404
 405         ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, 0,
 406                         100 * 1000);
 407         if (ret < 0) {
 408                 printf("EHCI fail timeout STD_ASS reset\n");
 409                 goto fail;
 410         }
 411
 412         token = hc32_to_cpu(qh->qh_overlay.qt_token);
 413         if (!(token & 0x80)) {
 414                 debug("TOKEN=%#x\n", token);
 415                 switch (token & 0xfc) {
 416                 case 0:
 417                         toggle = token >> 31;
 418                         usb_settoggle(dev, usb_pipeendpoint(pipe),
 419                                        usb_pipeout(pipe), toggle);
 420                         dev->status = 0;
 421                         break;
 422                 case 0x40:
 423                         dev->status = USB_ST_STALLED;
 424                         break;
 425                 case 0xa0:
 426                 case 0x20:
 427                         dev->status = USB_ST_BUF_ERR;
 428                         break;
 429                 case 0x50:
 430                 case 0x10:
 431                         dev->status = USB_ST_BABBLE_DET;
 432                         break;
 433                 default:
 434                         dev->status = USB_ST_CRC_ERR;
 435                         if ((token & 0x40) == 0x40)
 436                                 dev->status |= USB_ST_STALLED;
 437                         break;
 438                 }
 439                 dev->act_len = length - ((token >> 16) & 0x7fff);
 440         } else {
 441                 dev->act_len = 0;
 442                 debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x\n",
 443                       dev->devnum, ehci_readl(&hcor->or_usbsts),
 444                       ehci_readl(&hcor->or_portsc[0]),
 445                       ehci_readl(&hcor->or_portsc[1]));
 446         }
 447
 448         return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
 449
 450 fail:
 451         return -1;
 452 }
 453
 454 static inline int min3(int a, int b, int c)
 455 {
 456
 457         if (b < a)
 458                 a = b;
 459         if (c < a)
 460                 a = c;
 461         return a;
 462 }
 463
 464 int
 465 ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
 466                  int length, struct devrequest *req)
 467 {
 468         uint8_t tmpbuf[4];
 469         u16 typeReq;
 470         void *srcptr = NULL;
 471         int len, srclen;
 472         uint32_t reg;
 473         uint32_t *status_reg;
 474
 475         if (le16_to_cpu(req->index) > CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS) {
 476                 printf("The request port(%d) is not configured\n",
 477                         le16_to_cpu(req->index) - 1);
 478                 return -1;
 479         }
 480         status_reg = (uint32_t *)&hcor->or_portsc[
 481                                                 le16_to_cpu(req->index) - 1];
 482         srclen = 0;
 483
 484         debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u\n",
 485               req->request, req->request,
 486               req->requesttype, req->requesttype,
 487               le16_to_cpu(req->value), le16_to_cpu(req->index));
 488
 489         typeReq = req->request | req->requesttype << 8;
 490
 491         switch (typeReq) {
 492         case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
 493                 switch (le16_to_cpu(req->value) >> 8) {
 494                 case USB_DT_DEVICE:
 495                         debug("USB_DT_DEVICE request\n");
 496                         srcptr = &descriptor.device;
 497                         srclen = 0x12;
 498                         break;
 499                 case USB_DT_CONFIG:
 500                         debug("USB_DT_CONFIG config\n");
 501                         srcptr = &descriptor.config;
 502                         srclen = 0x19;
 503                         break;
 504                 case USB_DT_STRING:
 505                         debug("USB_DT_STRING config\n");
 506                         switch (le16_to_cpu(req->value) & 0xff) {
 507                         case 0: /* Language */
 508                                 srcptr = "\4\3\1\0";
 509                                 srclen = 4;
 510                                 break;
 511                         case 1: /* Vendor */
 512                                 srcptr = "\16\3u\0-\0b\0o\0o\0t\0";
 513                                 srclen = 14;
 514                                 break;
 515                         case 2: /* Product */
 516                                 srcptr = "\52\3E\0H\0C\0I\0 "
 517                                          "\0H\0o\0s\0t\0 "
 518                                          "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0";
 519                                 srclen = 42;
 520                                 break;
 521                         default:
 522                                 debug("unknown value DT_STRING %x\n",
 523                                         le16_to_cpu(req->value));
 524                                 goto unknown;
 525                         }
 526                         break;
 527                 default:
 528                         debug("unknown value %x\n", le16_to_cpu(req->value));
 529                         goto unknown;
 530                 }
 531                 break;
 532         case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
 533                 switch (le16_to_cpu(req->value) >> 8) {
 534                 case USB_DT_HUB:
 535                         debug("USB_DT_HUB config\n");
 536                         srcptr = &descriptor.hub;
 537                         srclen = 0x8;
 538                         break;
 539                 default:
 540                         debug("unknown value %x\n", le16_to_cpu(req->value));
 541                         goto unknown;
 542                 }
 543                 break;
 544         case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
 545                 debug("USB_REQ_SET_ADDRESS\n");
 546                 rootdev = le16_to_cpu(req->value);
 547                 break;
 548         case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
 549                 debug("USB_REQ_SET_CONFIGURATION\n");
 550                 /* Nothing to do */
 551                 break;
 552         case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8):
 553                 tmpbuf[0] = 1;  /* USB_STATUS_SELFPOWERED */
 554                 tmpbuf[1] = 0;
 555                 srcptr = tmpbuf;
 556                 srclen = 2;
 557                 break;
 558         case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
 559                 memset(tmpbuf, 0, 4);
 560                 reg = ehci_readl(status_reg);
 561                 if (reg & EHCI_PS_CS)
 562                         tmpbuf[0] |= USB_PORT_STAT_CONNECTION;
 563                 if (reg & EHCI_PS_PE)
 564                         tmpbuf[0] |= USB_PORT_STAT_ENABLE;
 565                 if (reg & EHCI_PS_SUSP)
 566                         tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
 567                 if (reg & EHCI_PS_OCA)
 568                         tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
 569                 if (reg & EHCI_PS_PR)
 570                         tmpbuf[0] |= USB_PORT_STAT_RESET;
 571                 if (reg & EHCI_PS_PP)
 572                         tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
 573
 574                 if (ehci_is_TDI()) {
 575                         switch ((reg >> 26) & 3) {
 576                         case 0:
 577                                 break;
 578                         case 1:
 579                                 tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8;
 580                                 break;
 581                         case 2:
 582                         default:
 583                                 tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
 584                                 break;
 585                         }
 586                 } else {
 587                         tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
 588                 }
 589
 590                 if (reg & EHCI_PS_CSC)
 591                         tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION;
 592                 if (reg & EHCI_PS_PEC)
 593                         tmpbuf[2] |= USB_PORT_STAT_C_ENABLE;
 594                 if (reg & EHCI_PS_OCC)
 595                         tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT;
 596                 if (portreset & (1 << le16_to_cpu(req->index)))
 597                         tmpbuf[2] |= USB_PORT_STAT_C_RESET;
 598
 599                 srcptr = tmpbuf;
 600                 srclen = 4;
 601                 break;
 602         case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
 603                 reg = ehci_readl(status_reg);
 604                 reg &= ~EHCI_PS_CLEAR;
 605                 switch (le16_to_cpu(req->value)) {
 606                 case USB_PORT_FEAT_ENABLE:
 607                         reg |= EHCI_PS_PE;
 608                         ehci_writel(status_reg, reg);
 609                         break;
 610                 case USB_PORT_FEAT_POWER:
 611                         if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams))) {
 612                                 reg |= EHCI_PS_PP;
 613                                 ehci_writel(status_reg, reg);
 614                         }
 615                         break;
 616                 case USB_PORT_FEAT_RESET:
 617                         if ((reg & (EHCI_PS_PE | EHCI_PS_CS)) == EHCI_PS_CS &&
 618                             !ehci_is_TDI() &&
 619                             EHCI_PS_IS_LOWSPEED(reg)) {
 620                                 /* Low speed device, give up ownership. */
 621                                 debug("port %d low speed --> companion\n",
 622                                       req->index - 1);
 623                                 reg |= EHCI_PS_PO;
 624                                 ehci_writel(status_reg, reg);
 625                                 break;
 626                         } else {
 627                                 int ret;
 628
 629                                 reg |= EHCI_PS_PR;
 630                                 reg &= ~EHCI_PS_PE;
 631                                 ehci_writel(status_reg, reg);
 632                                 /*
 633                                  * caller must wait, then call GetPortStatus
 634                                  * usb 2.0 specification say 50 ms resets on
 635                                  * root
 636                                  */
 637                                 ehci_powerup_fixup(status_reg, &reg);
 638
 639                                 ehci_writel(status_reg, reg & ~EHCI_PS_PR);
 640                                 /*
 641                                  * A host controller must terminate the reset
 642                                  * and stabilize the state of the port within
 643                                  * 2 milliseconds
 644                                  */
 645                                 ret = handshake(status_reg, EHCI_PS_PR, 0,
 646                                                 2 * 1000);
 647                                 if (!ret)
 648                                         portreset |=
 649                                                 1 << le16_to_cpu(req->index);
 650                                 else
 651                                         printf("port(%d) reset error\n",
 652                                         le16_to_cpu(req->index) - 1);
 653                         }
 654                         break;
 655                 default:
 656                         debug("unknown feature %x\n", le16_to_cpu(req->value));
 657                         goto unknown;
 658                 }
 659                 /* unblock posted writes */
 660                 (void) ehci_readl(&hcor->or_usbcmd);
 661                 break;
 662         case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
 663                 reg = ehci_readl(status_reg);
 664                 switch (le16_to_cpu(req->value)) {
 665                 case USB_PORT_FEAT_ENABLE:
 666                         reg &= ~EHCI_PS_PE;
 667                         break;
 668                 case USB_PORT_FEAT_C_ENABLE:
 669                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_PE;
 670                         break;
 671                 case USB_PORT_FEAT_POWER:
 672                         if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams)))
 673                                 reg = reg & ~(EHCI_PS_CLEAR | EHCI_PS_PP);
 674                 case USB_PORT_FEAT_C_CONNECTION:
 675                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_CSC;
 676                         break;
 677                 case USB_PORT_FEAT_OVER_CURRENT:
 678                         reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_OCC;
 679                         break;
 680                 case USB_PORT_FEAT_C_RESET:
 681                         portreset &= ~(1 << le16_to_cpu(req->index));
 682                         break;
 683                 default:
 684                         debug("unknown feature %x\n", le16_to_cpu(req->value));
 685                         goto unknown;
 686                 }
 687                 ehci_writel(status_reg, reg);
 688                 /* unblock posted write */
 689                 (void) ehci_readl(&hcor->or_usbcmd);
 690                 break;
 691         default:
 692                 debug("Unknown request\n");
 693                 goto unknown;
 694         }
 695
 696         mdelay(1);
 697         len = min3(srclen, le16_to_cpu(req->length), length);
 698         if (srcptr != NULL && len > 0)
 699                 memcpy(buffer, srcptr, len);
 700         else
 701                 debug("Len is 0\n");
 702
 703         dev->act_len = len;
 704         dev->status = 0;
 705         return 0;
 706
 707 unknown:
 708         debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x\n",
 709               req->requesttype, req->request, le16_to_cpu(req->value),
 710               le16_to_cpu(req->index), le16_to_cpu(req->length));
 711
 712         dev->act_len = 0;
 713         dev->status = USB_ST_STALLED;
 714         return -1;
 715 }
 716
 717 int usb_lowlevel_stop(void)
 718 {
 719         return ehci_hcd_stop();
 720 }
 721
 722 int usb_lowlevel_init(void)
 723 {
 724         uint32_t reg;
 725         uint32_t cmd;
 726
 727         if (ehci_hcd_init() != 0)
 728                 return -1;
 729
 730         /* EHCI spec section 4.1 */
 731         if (ehci_reset() != 0)
 732                 return -1;
 733
 734 #if defined(CONFIG_EHCI_HCD_INIT_AFTER_RESET)
 735         if (ehci_hcd_init() != 0)
 736                 return -1;
 737 #endif
 738
 739         /* Set head of reclaim list */
 740         memset(qh_list, 0, sizeof(*qh_list));
 741         qh_list->qh_link = cpu_to_hc32((uint32_t)qh_list | QH_LINK_TYPE_QH);
 742         qh_list->qh_endpt1 = cpu_to_hc32((1 << 15) | (USB_SPEED_HIGH << 12));
 743         qh_list->qh_curtd = cpu_to_hc32(QT_NEXT_TERMINATE);
 744         qh_list->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
 745         qh_list->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 746         qh_list->qh_overlay.qt_token = cpu_to_hc32(0x40);
 747
 748         reg = ehci_readl(&hccr->cr_hcsparams);
 749         descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
 750         printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);
 751         /* Port Indicators */
 752         if (HCS_INDICATOR(reg))
 753                 descriptor.hub.wHubCharacteristics |= 0x80;
 754         /* Port Power Control */
 755         if (HCS_PPC(reg))
 756                 descriptor.hub.wHubCharacteristics |= 0x01;
 757
 758         /* Start the host controller. */
 759         cmd = ehci_readl(&hcor->or_usbcmd);
 760         /*
 761          * Philips, Intel, and maybe others need CMD_RUN before the
 762          * root hub will detect new devices (why?); NEC doesn't
 763          */
 764         cmd &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
 765         cmd |= CMD_RUN;
 766         ehci_writel(&hcor->or_usbcmd, cmd);
 767
 768         /* take control over the ports */
 769         cmd = ehci_readl(&hcor->or_configflag);
 770         cmd |= FLAG_CF;
 771         ehci_writel(&hcor->or_configflag, cmd);
 772         /* unblock posted write */
 773         cmd = ehci_readl(&hcor->or_usbcmd);
 774         mdelay(5);
 775         reg = HC_VERSION(ehci_readl(&hccr->cr_capbase));
 776         printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff);
 777
 778         rootdev = 0;
 779
 780         return 0;
 781 }
 782
 783 int
 784 submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 785                 int length)
 786 {
 787
 788         if (usb_pipetype(pipe) != PIPE_BULK) {
 789                 debug("non-bulk pipe (type=%lu)", usb_pipetype(pipe));
 790                 return -1;
 791         }
 792         return ehci_submit_async(dev, pipe, buffer, length, NULL);
 793 }
 794
 795 int
 796 submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 797                    int length, struct devrequest *setup)
 798 {
 799
 800         if (usb_pipetype(pipe) != PIPE_CONTROL) {
 801                 debug("non-control pipe (type=%lu)", usb_pipetype(pipe));
 802                 return -1;
 803         }
 804
 805         if (usb_pipedevice(pipe) == rootdev) {
 806                 if (rootdev == 0)
 807                         dev->speed = USB_SPEED_HIGH;
 808                 return ehci_submit_root(dev, pipe, buffer, length, setup);
 809         }
 810         return ehci_submit_async(dev, pipe, buffer, length, setup);
 811 }
 812
 813 int
 814 submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 815                int length, int interval)
 816 {
 817
 818         debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
 819               dev, pipe, buffer, length, interval);
 820         return ehci_submit_async(dev, pipe, buffer, length, NULL);
 821 }