drivers/usb/host/r8a66597-hcd.c

   1 /*
   2  * R8A66597 HCD (Host Controller Driver) for u-boot
   3  *
   4  * Copyright (C) 2008  Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  */
  20
  21 #include <common.h>
  22 #include <usb.h>
  23 #include <asm/io.h>
  24
  25 #include "r8a66597.h"
  26
  27 #ifdef R8A66597_DEBUG
  28 #define R8A66597_DPRINT         printf
  29 #else
  30 #define R8A66597_DPRINT(...)
  31 #endif
  32
  33 static const char hcd_name[] = "r8a66597_hcd";
  34 static struct r8a66597 gr8a66597;
  35
  36 static void get_hub_data(struct usb_device *dev, u16 *hub_devnum, u16 *hubport)
  37 {
  38         int i;
  39
  40         *hub_devnum = 0;
  41         *hubport = 0;
  42
  43         /* check a device connected to root_hub */
  44         if ((dev->parent && dev->parent->devnum == 1) ||
  45             (dev->devnum == 1))
  46                 return;
  47
  48         for (i = 0; i < USB_MAXCHILDREN; i++) {
  49                 if (dev->parent->children[i] == dev) {
  50                         *hub_devnum = (u8)dev->parent->devnum;
  51                         *hubport = i;
  52                         return;
  53                 }
  54         }
  55
  56         printf("get_hub_data error.\n");
  57 }
  58
  59 static void set_devadd(struct r8a66597 *r8a66597, u8 r8a66597_address,
  60                         struct usb_device *dev, int port)
  61 {
  62         u16 val, usbspd, upphub, hubport;
  63         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
  64
  65         get_hub_data(dev, &upphub, &hubport);
  66         usbspd = r8a66597->speed;
  67         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
  68         r8a66597_write(r8a66597, val, devadd_reg);
  69 }
  70
  71 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
  72 {
  73         u16 tmp;
  74         int i = 0;
  75
  76 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  77         do {
  78                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
  79                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  80                 if (i++ > 1000) {
  81                         printf("register access fail.\n");
  82                         return -1;
  83                 }
  84         } while ((tmp & SCKE) != SCKE);
  85         r8a66597_write(r8a66597, 0x04, 0x02);
  86 #else
  87         do {
  88                 r8a66597_write(r8a66597, USBE, SYSCFG0);
  89                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  90                 if (i++ > 1000) {
  91                         printf("register access fail.\n");
  92                         return -1;
  93                 }
  94         } while ((tmp & USBE) != USBE);
  95         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
  96         r8a66597_mdfy(r8a66597, CONFIG_R8A66597_XTAL, XTAL, SYSCFG0);
  97
  98         i = 0;
  99         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 100         do {
 101                 udelay(1000);
 102                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 103                 if (i++ > 500) {
 104                         printf("register access fail.\n");
 105                         return -1;
 106                 }
 107         } while ((tmp & SCKE) != SCKE);
 108 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 109
 110         return 0;
 111 }
 112
 113 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 114 {
 115         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 116         udelay(1);
 117 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 118         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 119         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 120         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 121 #endif
 122 }
 123
 124 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 125 {
 126         u16 val;
 127
 128         val = port ? DRPD : DCFM | DRPD;
 129         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 130         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 131
 132         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 133 }
 134
 135 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 136 {
 137         u16 val, tmp;
 138
 139         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 140         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 141
 142         r8a66597_port_power(r8a66597, port, 0);
 143
 144         do {
 145                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 146                 udelay(640);
 147         } while (tmp == EDGESTS);
 148
 149         val = port ? DRPD : DCFM | DRPD;
 150         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 151         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 152 }
 153
 154 static int enable_controller(struct r8a66597 *r8a66597)
 155 {
 156         int ret, port;
 157
 158         ret = r8a66597_clock_enable(r8a66597);
 159         if (ret < 0)
 160                 return ret;
 161
 162         r8a66597_bset(r8a66597, CONFIG_R8A66597_LDRV & LDRV, PINCFG);
 163         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 164
 165         r8a66597_bset(r8a66597, INTL, SOFCFG);
 166         r8a66597_write(r8a66597, 0, INTENB0);
 167         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 168                 r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 169
 170         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, CFIFOSEL);
 171         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D0FIFOSEL);
 172         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D1FIFOSEL);
 173         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 174
 175         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 176                 r8a66597_enable_port(r8a66597, port);
 177
 178         return 0;
 179 }
 180
 181 static void disable_controller(struct r8a66597 *r8a66597)
 182 {
 183         int i;
 184
 185         if (!(r8a66597_read(r8a66597, SYSCFG0) & USBE))
 186                 return;
 187
 188         r8a66597_write(r8a66597, 0, INTENB0);
 189         r8a66597_write(r8a66597, 0, INTSTS0);
 190
 191         r8a66597_write(r8a66597, 0, D0FIFOSEL);
 192         r8a66597_write(r8a66597, 0, D1FIFOSEL);
 193         r8a66597_write(r8a66597, 0, DCPCFG);
 194         r8a66597_write(r8a66597, 0x40, DCPMAXP);
 195         r8a66597_write(r8a66597, 0, DCPCTR);
 196
 197         for (i = 0; i <= 10; i++)
 198                 r8a66597_write(r8a66597, 0, get_devadd_addr(i));
 199         for (i = 1; i <= 5; i++) {
 200                 r8a66597_write(r8a66597, 0, get_pipetre_addr(i));
 201                 r8a66597_write(r8a66597, 0, get_pipetrn_addr(i));
 202         }
 203         for (i = 1; i < R8A66597_MAX_NUM_PIPE; i++) {
 204                 r8a66597_write(r8a66597, 0, get_pipectr_addr(i));
 205                 r8a66597_write(r8a66597, i, PIPESEL);
 206                 r8a66597_write(r8a66597, 0, PIPECFG);
 207                 r8a66597_write(r8a66597, 0, PIPEBUF);
 208                 r8a66597_write(r8a66597, 0, PIPEMAXP);
 209                 r8a66597_write(r8a66597, 0, PIPEPERI);
 210         }
 211
 212         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++)
 213                 r8a66597_disable_port(r8a66597, i);
 214
 215         r8a66597_clock_disable(r8a66597);
 216 }
 217
 218 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 219                               u16 mask, u16 loop)
 220 {
 221         u16 tmp;
 222         int i = 0;
 223
 224         do {
 225                 tmp = r8a66597_read(r8a66597, reg);
 226                 if (i++ > 1000000) {
 227                         printf("register%lx, loop %x is timeout\n", reg, loop);
 228                         break;
 229                 }
 230         } while ((tmp & mask) != loop);
 231 }
 232
 233 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 234                                 struct usb_device *dev, unsigned long pipe)
 235 {
 236         u16 val = 0;
 237         u16 pipenum, bufnum, maxpacket;
 238
 239         if (usb_pipein(pipe)) {
 240                 pipenum = BULK_IN_PIPENUM;
 241                 bufnum = BULK_IN_BUFNUM;
 242                 maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 243         } else {
 244                 pipenum = BULK_OUT_PIPENUM;
 245                 bufnum = BULK_OUT_BUFNUM;
 246                 maxpacket = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 247         }
 248
 249         if (r8a66597->pipe_config & (1 << pipenum))
 250                 return;
 251         r8a66597->pipe_config |= (1 << pipenum);
 252
 253         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 254         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 255         r8a66597_write(r8a66597, pipenum, PIPESEL);
 256
 257         /* FIXME: This driver support bulk transfer only. */
 258         if (!usb_pipein(pipe))
 259                 val |= R8A66597_DIR;
 260         else
 261                 val |= R8A66597_SHTNAK;
 262         val |= R8A66597_BULK | R8A66597_DBLB | usb_pipeendpoint(pipe);
 263         r8a66597_write(r8a66597, val, PIPECFG);
 264
 265         r8a66597_write(r8a66597, (8 << 10) | bufnum, PIPEBUF);
 266         r8a66597_write(r8a66597, make_devsel(usb_pipedevice(pipe)) |
 267                                  maxpacket, PIPEMAXP);
 268         r8a66597_write(r8a66597, 0, PIPEPERI);
 269         r8a66597_write(r8a66597, SQCLR, get_pipectr_addr(pipenum));
 270 }
 271
 272 static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 273                              struct devrequest *setup)
 274 {
 275         int i;
 276         unsigned short *p = (unsigned short *)setup;
 277         unsigned long setup_addr = USBREQ;
 278         u16 intsts1;
 279         int timeout = 3000;
 280         u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
 281
 282         r8a66597_write(r8a66597, make_devsel(devsel) |
 283                                  (8 << dev->maxpacketsize), DCPMAXP);
 284         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 285
 286         for (i = 0; i < 4; i++) {
 287                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
 288                 setup_addr += 2;
 289         }
 290         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 291         r8a66597_write(r8a66597, SUREQ, DCPCTR);
 292
 293         while (1) {
 294                 intsts1 = r8a66597_read(r8a66597, INTSTS1);
 295                 if (intsts1 & SACK)
 296                         break;
 297                 if (intsts1 & SIGN) {
 298                         printf("setup packet send error\n");
 299                         return -1;
 300                 }
 301                 if (timeout-- < 0) {
 302                         printf("setup packet timeout\n");
 303                         return -1;
 304                 }
 305                 udelay(500);
 306         }
 307
 308         return 0;
 309 }
 310
 311 static int send_bulk_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 312                             unsigned long pipe, void *buffer, int transfer_len)
 313 {
 314         u16 tmp, bufsize;
 315         u16 *buf;
 316         size_t size;
 317
 318         R8A66597_DPRINT("%s\n", __func__);
 319
 320         r8a66597_mdfy(r8a66597, MBW | BULK_OUT_PIPENUM,
 321                         MBW | CURPIPE, CFIFOSEL);
 322         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, BULK_OUT_PIPENUM);
 323         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 324         if ((tmp & FRDY) == 0) {
 325                 printf("%s FRDY is not set (%x)\n", __func__, tmp);
 326                 return -1;
 327         }
 328
 329         /* prepare parameters */
 330         bufsize = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 331         buf = (u16 *)(buffer + dev->act_len);
 332         size = min((int)bufsize, transfer_len - dev->act_len);
 333
 334         /* write fifo */
 335         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 336         if (buffer) {
 337                 r8a66597_write_fifo(r8a66597, CFIFO, buf, size);
 338                 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
 339         }
 340
 341         /* update parameters */
 342         dev->act_len += size;
 343
 344         r8a66597_mdfy(r8a66597, PID_BUF, PID,
 345                         get_pipectr_addr(BULK_OUT_PIPENUM));
 346
 347         while (!(r8a66597_read(r8a66597, BEMPSTS) & (1 << BULK_OUT_PIPENUM)))
 348                 if (ctrlc())
 349                         return -1;
 350         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 351
 352         if (dev->act_len >= transfer_len)
 353                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
 354                                 get_pipectr_addr(BULK_OUT_PIPENUM));
 355
 356         return 0;
 357 }
 358
 359 static int receive_bulk_packet(struct r8a66597 *r8a66597,
 360                                struct usb_device *dev,
 361                                unsigned long pipe,
 362                                void *buffer, int transfer_len)
 363 {
 364         u16 tmp;
 365         u16 *buf;
 366         const u16 pipenum = BULK_IN_PIPENUM;
 367         int rcv_len;
 368         int maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 369
 370         R8A66597_DPRINT("%s\n", __func__);
 371
 372         /* prepare */
 373         if (dev->act_len == 0) {
 374                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
 375                                 get_pipectr_addr(pipenum));
 376                 r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 377
 378                 r8a66597_write(r8a66597, TRCLR, get_pipetre_addr(pipenum));
 379                 r8a66597_write(r8a66597,
 380                                 (transfer_len + maxpacket - 1) / maxpacket,
 381                                 get_pipetrn_addr(pipenum));
 382                 r8a66597_bset(r8a66597, TRENB, get_pipetre_addr(pipenum));
 383
 384                 r8a66597_mdfy(r8a66597, PID_BUF, PID,
 385                                 get_pipectr_addr(pipenum));
 386         }
 387
 388         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 389         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 390
 391         while (!(r8a66597_read(r8a66597, BRDYSTS) & (1 << pipenum)))
 392                 if (ctrlc())
 393                         return -1;
 394         r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 395
 396         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 397         if ((tmp & FRDY) == 0) {
 398                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 399                 return -1;
 400         }
 401
 402         buf = (u16 *)(buffer + dev->act_len);
 403         rcv_len = tmp & DTLN;
 404         dev->act_len += rcv_len;
 405
 406         if (buffer) {
 407                 if (rcv_len == 0)
 408                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 409                 else
 410                         r8a66597_read_fifo(r8a66597, CFIFO, buf, rcv_len);
 411         }
 412
 413         return 0;
 414 }
 415
 416 static int receive_control_packet(struct r8a66597 *r8a66597,
 417                                   struct usb_device *dev,
 418                                   void *buffer, int transfer_len)
 419 {
 420         u16 tmp;
 421         int rcv_len;
 422
 423         /* FIXME: limit transfer size : 64byte or less */
 424
 425         r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 426         r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 427         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 428         r8a66597_bset(r8a66597, SQSET, DCPCTR);
 429         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 430         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 431
 432         while (!(r8a66597_read(r8a66597, BRDYSTS) & 0x0001))
 433                 if (ctrlc())
 434                         return -1;
 435         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 436
 437         r8a66597_mdfy(r8a66597, MBW, MBW | CURPIPE, CFIFOSEL);
 438         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 439
 440         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 441         if ((tmp & FRDY) == 0) {
 442                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 443                 return -1;
 444         }
 445
 446         rcv_len = tmp & DTLN;
 447         dev->act_len += rcv_len;
 448
 449         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 450
 451         if (buffer) {
 452                 if (rcv_len == 0)
 453                         r8a66597_write(r8a66597, BCLR, DCPCTR);
 454                 else
 455                         r8a66597_read_fifo(r8a66597, CFIFO, buffer, rcv_len);
 456         }
 457
 458         return 0;
 459 }
 460
 461 static int send_status_packet(struct r8a66597 *r8a66597,
 462                                unsigned long pipe)
 463 {
 464         r8a66597_bset(r8a66597, SQSET, DCPCTR);
 465         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 466
 467         if (usb_pipein(pipe)) {
 468                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
 469                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
 470                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 471                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
 472                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
 473         } else {
 474                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 475                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 476                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 477                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 478         }
 479         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 480
 481         while (!(r8a66597_read(r8a66597, BEMPSTS) & 0x0001))
 482                 if (ctrlc())
 483                         return -1;
 484
 485         return 0;
 486 }
 487
 488 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port)
 489 {
 490         int count = R8A66597_MAX_SAMPLING;
 491         unsigned short syssts, old_syssts;
 492
 493         R8A66597_DPRINT("%s\n", __func__);
 494
 495         old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 496         while (count > 0) {
 497                 mdelay(R8A66597_RH_POLL_TIME);
 498
 499                 syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 500                 if (syssts == old_syssts) {
 501                         count--;
 502                 } else {
 503                         count = R8A66597_MAX_SAMPLING;
 504                         old_syssts = syssts;
 505                 }
 506         }
 507 }
 508
 509 static void r8a66597_bus_reset(struct r8a66597 *r8a66597, int port)
 510 {
 511         mdelay(10);
 512         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port));
 513         mdelay(50);
 514         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, get_dvstctr_reg(port));
 515         mdelay(50);
 516 }
 517
 518 static int check_usb_device_connecting(struct r8a66597 *r8a66597)
 519 {
 520         int timeout = 10000;    /* 100usec * 10000 = 1sec */
 521         int i;
 522
 523         for (i = 0; i < 5; i++) {
 524                 /* check a usb cable connect */
 525                 while (!(r8a66597_read(r8a66597, INTSTS1) & ATTCH)) {
 526                         if (timeout-- < 0) {
 527                                 printf("%s timeout.\n", __func__);
 528                                 return -1;
 529                         }
 530                         udelay(100);
 531                 }
 532
 533                 /* check a data line */
 534                 r8a66597_check_syssts(r8a66597, 0);
 535
 536                 r8a66597_bus_reset(r8a66597, 0);
 537                 r8a66597->speed = get_rh_usb_speed(r8a66597, 0);
 538
 539                 if (!(r8a66597_read(r8a66597, INTSTS1) & DTCH)) {
 540                         r8a66597->port_change = USB_PORT_STAT_C_CONNECTION;
 541                         r8a66597->port_status = USB_PORT_STAT_CONNECTION |
 542                                                 USB_PORT_STAT_ENABLE;
 543                         return 0;       /* success */
 544                 }
 545
 546                 R8A66597_DPRINT("USB device has detached. retry = %d\n", i);
 547                 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
 548         }
 549
 550         return -1;      /* fail */
 551 }
 552
 553 /*-------------------------------------------------------------------------*
 554  * Virtual Root Hub
 555  *-------------------------------------------------------------------------*/
 556
 557 #include <usbroothubdes.h>
 558
 559 static int r8a66597_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
 560                         void *buffer, int transfer_len, struct devrequest *cmd)
 561 {
 562         struct r8a66597 *r8a66597 = &gr8a66597;
 563         int leni = transfer_len;
 564         int len = 0;
 565         int stat = 0;
 566         __u16 bmRType_bReq;
 567         __u16 wValue;
 568         __u16 wLength;
 569         unsigned char data[32];
 570
 571         R8A66597_DPRINT("%s\n", __func__);
 572
 573         if (usb_pipeint(pipe)) {
 574                 printf("Root-Hub submit IRQ: NOT implemented");
 575                 return 0;
 576         }
 577
 578         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
 579         wValue        = cpu_to_le16 (cmd->value);
 580         wLength       = cpu_to_le16 (cmd->length);
 581
 582         switch (bmRType_bReq) {
 583         case RH_GET_STATUS:
 584                 *(__u16 *)buffer = cpu_to_le16(1);
 585                 len = 2;
 586                 break;
 587         case RH_GET_STATUS | RH_INTERFACE:
 588                 *(__u16 *)buffer = cpu_to_le16(0);
 589                 len = 2;
 590                 break;
 591         case RH_GET_STATUS | RH_ENDPOINT:
 592                 *(__u16 *)buffer = cpu_to_le16(0);
 593                 len = 2;
 594                 break;
 595         case RH_GET_STATUS | RH_CLASS:
 596                 *(__u32 *)buffer = cpu_to_le32(0);
 597                 len = 4;
 598                 break;
 599         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
 600                 *(__u32 *)buffer = cpu_to_le32(r8a66597->port_status |
 601                                                 (r8a66597->port_change << 16));
 602                 len = 4;
 603                 break;
 604         case RH_CLEAR_FEATURE | RH_ENDPOINT:
 605         case RH_CLEAR_FEATURE | RH_CLASS:
 606                 break;
 607
 608         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
 609                 switch (wValue) {
 610                 case RH_C_PORT_CONNECTION:
 611                         r8a66597->port_change &= ~USB_PORT_STAT_C_CONNECTION;
 612                         break;
 613                 }
 614                 break;
 615
 616         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
 617                 switch (wValue) {
 618                 case (RH_PORT_SUSPEND):
 619                         break;
 620                 case (RH_PORT_RESET):
 621                         r8a66597_bus_reset(r8a66597, 0);
 622                         break;
 623                 case (RH_PORT_POWER):
 624                         break;
 625                 case (RH_PORT_ENABLE):
 626                         break;
 627                 }
 628                 break;
 629         case RH_SET_ADDRESS:
 630                 gr8a66597.rh_devnum = wValue;
 631                 break;
 632         case RH_GET_DESCRIPTOR:
 633                 switch ((wValue & 0xff00) >> 8) {
 634                 case (0x01): /* device descriptor */
 635                         len = min_t(unsigned int,
 636                                   leni,
 637                                   min_t(unsigned int,
 638                                       sizeof(root_hub_dev_des),
 639                                       wLength));
 640                         memcpy(buffer, root_hub_dev_des, len);
 641                         break;
 642                 case (0x02): /* configuration descriptor */
 643                         len = min_t(unsigned int,
 644                                   leni,
 645                                   min_t(unsigned int,
 646                                       sizeof(root_hub_config_des),
 647                                       wLength));
 648                         memcpy(buffer, root_hub_config_des, len);
 649                         break;
 650                 case (0x03): /* string descriptors */
 651                         if (wValue == 0x0300) {
 652                                 len = min_t(unsigned int,
 653                                           leni,
 654                                           min_t(unsigned int,
 655                                               sizeof(root_hub_str_index0),
 656                                               wLength));
 657                                 memcpy(buffer, root_hub_str_index0, len);
 658                         }
 659                         if (wValue == 0x0301) {
 660                                 len = min_t(unsigned int,
 661                                           leni,
 662                                           min_t(unsigned int,
 663                                               sizeof(root_hub_str_index1),
 664                                               wLength));
 665                                 memcpy(buffer, root_hub_str_index1, len);
 666                         }
 667                         break;
 668                 default:
 669                         stat = USB_ST_STALLED;
 670                 }
 671                 break;
 672
 673         case RH_GET_DESCRIPTOR | RH_CLASS:
 674         {
 675                 __u32 temp = 0x00000001;
 676
 677                 data[0] = 9;            /* min length; */
 678                 data[1] = 0x29;
 679                 data[2] = temp & RH_A_NDP;
 680                 data[3] = 0;
 681                 if (temp & RH_A_PSM)
 682                         data[3] |= 0x1;
 683                 if (temp & RH_A_NOCP)
 684                         data[3] |= 0x10;
 685                 else if (temp & RH_A_OCPM)
 686                         data[3] |= 0x8;
 687
 688                 /* corresponds to data[4-7] */
 689                 data[5] = (temp & RH_A_POTPGT) >> 24;
 690                 data[7] = temp & RH_B_DR;
 691                 if (data[2] < 7) {
 692                         data[8] = 0xff;
 693                 } else {
 694                         data[0] += 2;
 695                         data[8] = (temp & RH_B_DR) >> 8;
 696                         data[10] = data[9] = 0xff;
 697                 }
 698
 699                 len = min_t(unsigned int, leni,
 700                             min_t(unsigned int, data[0], wLength));
 701                 memcpy(buffer, data, len);
 702                 break;
 703         }
 704
 705         case RH_GET_CONFIGURATION:
 706                 *(__u8 *) buffer = 0x01;
 707                 len = 1;
 708                 break;
 709         case RH_SET_CONFIGURATION:
 710                 break;
 711         default:
 712                 R8A66597_DPRINT("unsupported root hub command");
 713                 stat = USB_ST_STALLED;
 714         }
 715
 716         mdelay(1);
 717
 718         len = min_t(int, len, leni);
 719
 720         dev->act_len = len;
 721         dev->status = stat;
 722
 723         return stat;
 724 }
 725
 726 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 727                     int transfer_len)
 728 {
 729         struct r8a66597 *r8a66597 = &gr8a66597;
 730         int ret = 0;
 731
 732         R8A66597_DPRINT("%s\n", __func__);
 733         R8A66597_DPRINT("pipe = %08x, buffer = %p, len = %d, devnum = %d\n",
 734                         pipe, buffer, transfer_len, dev->devnum);
 735
 736         set_devadd(r8a66597, dev->devnum, dev, 0);
 737
 738         pipe_buffer_setting(r8a66597, dev, pipe);
 739
 740         dev->act_len = 0;
 741         while (dev->act_len < transfer_len && ret == 0) {
 742                 if (ctrlc())
 743                         return -1;
 744
 745                 if (usb_pipein(pipe))
 746                         ret = receive_bulk_packet(r8a66597, dev, pipe, buffer,
 747                                                         transfer_len);
 748                 else
 749                         ret = send_bulk_packet(r8a66597, dev, pipe, buffer,
 750                                                         transfer_len);
 751         }
 752
 753         if (ret == 0)
 754                 dev->status = 0;
 755
 756         return ret;
 757 }
 758
 759 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
 760                        void *buffer, int transfer_len, struct devrequest *setup)
 761 {
 762         struct r8a66597 *r8a66597 = &gr8a66597;
 763         u16 r8a66597_address = setup->request == USB_REQ_SET_ADDRESS ?
 764                                         0 : dev->devnum;
 765
 766         R8A66597_DPRINT("%s\n", __func__);
 767         if (usb_pipedevice(pipe) == r8a66597->rh_devnum)
 768                 return r8a66597_submit_rh_msg(dev, pipe, buffer, transfer_len,
 769                                                 setup);
 770
 771         R8A66597_DPRINT("%s: setup\n", __func__);
 772         set_devadd(r8a66597, r8a66597_address, dev, 0);
 773
 774         if (send_setup_packet(r8a66597, dev, setup) < 0) {
 775                 printf("setup packet send error\n");
 776                 return -1;
 777         }
 778
 779         dev->act_len = 0;
 780         if (usb_pipein(pipe))
 781                 if (receive_control_packet(r8a66597, dev, buffer,
 782                                                 transfer_len) < 0)
 783                         return -1;
 784
 785         if (send_status_packet(r8a66597, pipe) < 0)
 786                 return -1;
 787
 788         dev->status = 0;
 789
 790         return 0;
 791 }
 792
 793 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 794                         int transfer_len, int interval)
 795 {
 796         /* no implement */
 797         R8A66597_DPRINT("%s\n", __func__);
 798         return 0;
 799 }
 800
 801 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 802 {
 803         struct r8a66597 *r8a66597 = &gr8a66597;
 804
 805         R8A66597_DPRINT("%s\n", __func__);
 806
 807         memset(r8a66597, 0, sizeof(*r8a66597));
 808         r8a66597->reg = CONFIG_R8A66597_BASE_ADDR;
 809
 810         disable_controller(r8a66597);
 811         mdelay(100);
 812
 813         enable_controller(r8a66597);
 814         r8a66597_port_power(r8a66597, 0 , 1);
 815
 816         /* check usb device */
 817         check_usb_device_connecting(r8a66597);
 818
 819         mdelay(50);
 820
 821         return 0;
 822 }
 823
 824 int usb_lowlevel_stop(int index)
 825 {
 826         disable_controller(&gr8a66597);
 827
 828         return 0;
 829 }