drivers/usb/r8a66597-hcd.c

   1 /*
   2  * R8A66597 HCD (Host Controller Driver) for u-boot
   3  *
   4  * Copyright (C) 2008  Yoshihiro Shimoda <[email protected]>
   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 unsigned short clock = CONFIG_R8A66597_XTAL;
  35 static unsigned short vif = CONFIG_R8A66597_LDRV;
  36 static unsigned short endian = CONFIG_R8A66597_ENDIAN;
  37 static struct r8a66597 gr8a66597;
  38
  39 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
  40                            u16 usbspd, u8 upphub, u8 hubport, int port)
  41 {
  42         u16 val;
  43         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
  44
  45         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
  46         r8a66597_write(r8a66597, val, devadd_reg);
  47 }
  48
  49 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
  50 {
  51         u16 tmp;
  52         int i = 0;
  53
  54 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  55         do {
  56                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
  57                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  58                 if (i++ > 1000) {
  59                         printf("register access fail.\n");
  60                         return -1;
  61                 }
  62         } while ((tmp & SCKE) != SCKE);
  63         r8a66597_write(r8a66597, 0x04, 0x02);
  64 #else
  65         do {
  66                 r8a66597_write(r8a66597, USBE, SYSCFG0);
  67                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  68                 if (i++ > 1000) {
  69                         printf("register access fail.\n");
  70                         return -1;
  71                 }
  72         } while ((tmp & USBE) != USBE);
  73         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
  74         r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
  75
  76         i = 0;
  77         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
  78         do {
  79                 udelay(1000);
  80                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  81                 if (i++ > 500) {
  82                         printf("register access fail.\n");
  83                         return -1;
  84                 }
  85         } while ((tmp & SCKE) != SCKE);
  86 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
  87
  88         return 0;
  89 }
  90
  91 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
  92 {
  93         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
  94         udelay(1);
  95 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  96         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
  97         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
  98         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
  99 #endif
 100 }
 101
 102 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 103 {
 104         u16 val;
 105
 106         val = port ? DRPD : DCFM | DRPD;
 107         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 108         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 109
 110         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 111 }
 112
 113 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 114 {
 115         u16 val, tmp;
 116
 117         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 118         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 119
 120         r8a66597_port_power(r8a66597, port, 0);
 121
 122         do {
 123                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 124                 udelay(640);
 125         } while (tmp == EDGESTS);
 126
 127         val = port ? DRPD : DCFM | DRPD;
 128         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 129         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 130 }
 131
 132 static int enable_controller(struct r8a66597 *r8a66597)
 133 {
 134         int ret, port;
 135
 136         ret = r8a66597_clock_enable(r8a66597);
 137         if (ret < 0)
 138                 return ret;
 139
 140         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 141         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 142
 143         r8a66597_bset(r8a66597, INTL, SOFCFG);
 144         r8a66597_write(r8a66597, 0, INTENB0);
 145         r8a66597_write(r8a66597, 0, INTENB1);
 146         r8a66597_write(r8a66597, 0, INTENB2);
 147
 148         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 149         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 150         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 151         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 152
 153         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 154                 r8a66597_enable_port(r8a66597, port);
 155
 156         return 0;
 157 }
 158
 159 static void disable_controller(struct r8a66597 *r8a66597)
 160 {
 161         int i;
 162
 163         if (!(r8a66597_read(r8a66597, SYSCFG0) & USBE))
 164                 return;
 165
 166         r8a66597_write(r8a66597, 0, INTENB0);
 167         r8a66597_write(r8a66597, 0, INTSTS0);
 168
 169         r8a66597_write(r8a66597, 0, D0FIFOSEL);
 170         r8a66597_write(r8a66597, 0, D1FIFOSEL);
 171         r8a66597_write(r8a66597, 0, DCPCFG);
 172         r8a66597_write(r8a66597, 0x40, DCPMAXP);
 173         r8a66597_write(r8a66597, 0, DCPCTR);
 174
 175         for (i = 0; i <= 10; i++)
 176                 r8a66597_write(r8a66597, 0, get_devadd_addr(i));
 177         for (i = 1; i <= 5; i++) {
 178                 r8a66597_write(r8a66597, 0, get_pipetre_addr(i));
 179                 r8a66597_write(r8a66597, 0, get_pipetrn_addr(i));
 180         }
 181         for (i = 1; i < R8A66597_MAX_NUM_PIPE; i++) {
 182                 r8a66597_write(r8a66597, 0, get_pipectr_addr(i));
 183                 r8a66597_write(r8a66597, i, PIPESEL);
 184                 r8a66597_write(r8a66597, 0, PIPECFG);
 185                 r8a66597_write(r8a66597, 0, PIPEBUF);
 186                 r8a66597_write(r8a66597, 0, PIPEMAXP);
 187                 r8a66597_write(r8a66597, 0, PIPEPERI);
 188         }
 189
 190         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++)
 191                 r8a66597_disable_port(r8a66597, i);
 192
 193         r8a66597_clock_disable(r8a66597);
 194 }
 195
 196 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 197                               u16 mask, u16 loop)
 198 {
 199         u16 tmp;
 200         int i = 0;
 201
 202         do {
 203                 tmp = r8a66597_read(r8a66597, reg);
 204                 if (i++ > 1000000) {
 205                         printf("register%lx, loop %x is timeout\n", reg, loop);
 206                         break;
 207                 }
 208         } while ((tmp & mask) != loop);
 209 }
 210
 211 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 212                                 struct usb_device *dev, unsigned long pipe)
 213 {
 214         u16 val = 0;
 215         u16 pipenum, bufnum, maxpacket;
 216
 217         if (usb_pipein(pipe)) {
 218                 pipenum = BULK_IN_PIPENUM;
 219                 bufnum = BULK_IN_BUFNUM;
 220                 maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 221         } else {
 222                 pipenum = BULK_OUT_PIPENUM;
 223                 bufnum = BULK_OUT_BUFNUM;
 224                 maxpacket = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 225         }
 226
 227         if (r8a66597->pipe_config & (1 << pipenum))
 228                 return;
 229         r8a66597->pipe_config |= (1 << pipenum);
 230
 231         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 232         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 233         r8a66597_write(r8a66597, pipenum, PIPESEL);
 234
 235         /* FIXME: This driver support bulk transfer only. */
 236         if (!usb_pipein(pipe))
 237                 val |= R8A66597_DIR;
 238         else
 239                 val |= R8A66597_SHTNAK;
 240         val |= R8A66597_BULK | R8A66597_DBLB | usb_pipeendpoint(pipe);
 241         r8a66597_write(r8a66597, val, PIPECFG);
 242
 243         r8a66597_write(r8a66597, (8 << 10) | bufnum, PIPEBUF);
 244         r8a66597_write(r8a66597, make_devsel(usb_pipedevice(pipe)) |
 245                                  maxpacket, PIPEMAXP);
 246         r8a66597_write(r8a66597, 0, PIPEPERI);
 247         r8a66597_write(r8a66597, SQCLR, get_pipectr_addr(pipenum));
 248 }
 249
 250 static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 251                              struct devrequest *setup)
 252 {
 253         int i;
 254         unsigned short *p = (unsigned short *)setup;
 255         unsigned long setup_addr = USBREQ;
 256         u16 intsts1;
 257         int timeout = 3000;
 258         u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
 259
 260         r8a66597_write(r8a66597, make_devsel(devsel) |
 261                                  (8 << dev->maxpacketsize), DCPMAXP);
 262         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 263
 264         for (i = 0; i < 4; i++) {
 265                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
 266                 setup_addr += 2;
 267         }
 268         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 269         r8a66597_write(r8a66597, SUREQ, DCPCTR);
 270
 271         while (1) {
 272                 intsts1 = r8a66597_read(r8a66597, INTSTS1);
 273                 if (intsts1 & SACK)
 274                         break;
 275                 if (intsts1 & SIGN) {
 276                         printf("setup packet send error\n");
 277                         return -1;
 278                 }
 279                 if (timeout-- < 0) {
 280                         printf("setup packet timeout\n");
 281                         return -1;
 282                 }
 283                 udelay(500);
 284         }
 285
 286         return 0;
 287 }
 288
 289 static int send_bulk_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 290                             unsigned long pipe, void *buffer, int transfer_len)
 291 {
 292         u16 tmp, bufsize;
 293         u16 *buf;
 294         size_t size;
 295
 296         R8A66597_DPRINT("%s\n", __func__);
 297
 298         r8a66597_mdfy(r8a66597, MBW | BULK_OUT_PIPENUM,
 299                         MBW | CURPIPE, CFIFOSEL);
 300         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, BULK_OUT_PIPENUM);
 301         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 302         if ((tmp & FRDY) == 0) {
 303                 printf("%s FRDY is not set (%x)\n", __func__, tmp);
 304                 return -1;
 305         }
 306
 307         /* prepare parameters */
 308         bufsize = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 309         buf = (u16 *)(buffer + dev->act_len);
 310         size = min((int)bufsize, transfer_len - dev->act_len);
 311
 312         /* write fifo */
 313         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 314         if (buffer) {
 315                 r8a66597_write_fifo(r8a66597, CFIFO, buf, size);
 316                 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
 317         }
 318
 319         /* update parameters */
 320         dev->act_len += size;
 321
 322         r8a66597_mdfy(r8a66597, PID_BUF, PID,
 323                         get_pipectr_addr(BULK_OUT_PIPENUM));
 324
 325         while (!(r8a66597_read(r8a66597, BEMPSTS) & (1 << BULK_OUT_PIPENUM)))
 326                 if (ctrlc())
 327                         return -1;
 328         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 329
 330         if (dev->act_len >= transfer_len)
 331                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
 332                                 get_pipectr_addr(BULK_OUT_PIPENUM));
 333
 334         return 0;
 335 }
 336
 337 static int receive_bulk_packet(struct r8a66597 *r8a66597,
 338                                struct usb_device *dev,
 339                                unsigned long pipe,
 340                                void *buffer, int transfer_len)
 341 {
 342         u16 tmp;
 343         u16 *buf;
 344         const u16 pipenum = BULK_IN_PIPENUM;
 345         int rcv_len;
 346         int maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 347
 348         R8A66597_DPRINT("%s\n", __func__);
 349
 350         /* prepare */
 351         if (dev->act_len == 0) {
 352                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
 353                                 get_pipectr_addr(pipenum));
 354                 r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 355
 356                 r8a66597_write(r8a66597, TRCLR, get_pipetre_addr(pipenum));
 357                 r8a66597_write(r8a66597,
 358                                 (transfer_len + maxpacket - 1) / maxpacket,
 359                                 get_pipetrn_addr(pipenum));
 360                 r8a66597_bset(r8a66597, TRENB, get_pipetre_addr(pipenum));
 361
 362                 r8a66597_mdfy(r8a66597, PID_BUF, PID,
 363                                 get_pipectr_addr(pipenum));
 364         }
 365
 366         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 367         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 368
 369         while (!(r8a66597_read(r8a66597, BRDYSTS) & (1 << pipenum)))
 370                 if (ctrlc())
 371                         return -1;
 372         r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 373
 374         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 375         if ((tmp & FRDY) == 0) {
 376                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 377                 return -1;
 378         }
 379
 380         buf = (u16 *)(buffer + dev->act_len);
 381         rcv_len = tmp & DTLN;
 382         dev->act_len += rcv_len;
 383
 384         if (buffer) {
 385                 if (rcv_len == 0)
 386                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 387                 else
 388                         r8a66597_read_fifo(r8a66597, CFIFO, buf, rcv_len);
 389         }
 390
 391         return 0;
 392 }
 393
 394 static int receive_control_packet(struct r8a66597 *r8a66597,
 395                                   struct usb_device *dev,
 396                                   void *buffer, int transfer_len)
 397 {
 398         u16 tmp;
 399         int rcv_len;
 400
 401         /* FIXME: limit transfer size : 64byte or less */
 402
 403         r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 404         r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 405         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 406         r8a66597_bset(r8a66597, SQSET, DCPCTR);
 407         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 408         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 409
 410         while (!(r8a66597_read(r8a66597, BRDYSTS) & 0x0001))
 411                 if (ctrlc())
 412                         return -1;
 413         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 414
 415         r8a66597_mdfy(r8a66597, MBW, MBW | CURPIPE, CFIFOSEL);
 416         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 417
 418         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 419         if ((tmp & FRDY) == 0) {
 420                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 421                 return -1;
 422         }
 423
 424         rcv_len = tmp & DTLN;
 425         dev->act_len += rcv_len;
 426
 427         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 428
 429         if (buffer) {
 430                 if (rcv_len == 0)
 431                         r8a66597_write(r8a66597, BCLR, DCPCTR);
 432                 else
 433                         r8a66597_read_fifo(r8a66597, CFIFO, buffer, rcv_len);
 434         }
 435
 436         return 0;
 437 }
 438
 439 static int send_status_packet(struct r8a66597 *r8a66597,
 440                                unsigned long pipe)
 441 {
 442         r8a66597_bset(r8a66597, SQSET, DCPCTR);
 443         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 444
 445         if (usb_pipein(pipe)) {
 446                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
 447                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
 448                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 449                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
 450                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
 451         } else {
 452                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 453                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 454                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 455                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 456         }
 457         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 458
 459         while (!(r8a66597_read(r8a66597, BEMPSTS) & 0x0001))
 460                 if (ctrlc())
 461                         return -1;
 462
 463         return 0;
 464 }
 465
 466 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port)
 467 {
 468         int count = R8A66597_MAX_SAMPLING;
 469         unsigned short syssts, old_syssts;
 470
 471         R8A66597_DPRINT("%s\n", __func__);
 472
 473         old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 474         while (count > 0) {
 475                 wait_ms(R8A66597_RH_POLL_TIME);
 476
 477                 syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 478                 if (syssts == old_syssts) {
 479                         count--;
 480                 } else {
 481                         count = R8A66597_MAX_SAMPLING;
 482                         old_syssts = syssts;
 483                 }
 484         }
 485 }
 486
 487 static void r8a66597_bus_reset(struct r8a66597 *r8a66597, int port)
 488 {
 489         wait_ms(10);
 490         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port));
 491         wait_ms(50);
 492         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, get_dvstctr_reg(port));
 493         wait_ms(50);
 494 }
 495
 496 static int check_usb_device_connecting(struct r8a66597 *r8a66597)
 497 {
 498         int timeout = 10000;    /* 100usec * 10000 = 1sec */
 499         int i;
 500
 501         for (i = 0; i < 5; i++) {
 502                 /* check a usb cable connect */
 503                 while (!(r8a66597_read(r8a66597, INTSTS1) & ATTCH)) {
 504                         if (timeout-- < 0) {
 505                                 printf("%s timeout.\n", __func__);
 506                                 return -1;
 507                         }
 508                         udelay(100);
 509                 }
 510
 511                 /* check a data line */
 512                 r8a66597_check_syssts(r8a66597, 0);
 513
 514                 r8a66597_bus_reset(r8a66597, 0);
 515                 r8a66597->speed = get_rh_usb_speed(r8a66597, 0);
 516
 517                 if (!(r8a66597_read(r8a66597, INTSTS1) & DTCH)) {
 518                         r8a66597->port_change = USB_PORT_STAT_C_CONNECTION;
 519                         r8a66597->port_status = USB_PORT_STAT_CONNECTION |
 520                                                 USB_PORT_STAT_ENABLE;
 521                         return 0;       /* success */
 522                 }
 523
 524                 R8A66597_DPRINT("USB device has detached. retry = %d\n", i);
 525                 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
 526         }
 527
 528         return -1;      /* fail */
 529 }
 530
 531 /* based on usb_ohci.c */
 532 #define min_t(type, x, y) \
 533                 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
 534 /*-------------------------------------------------------------------------*
 535  * Virtual Root Hub
 536  *-------------------------------------------------------------------------*/
 537
 538 /* Device descriptor */
 539 static __u8 root_hub_dev_des[] =
 540 {
 541         0x12,       /*  __u8  bLength; */
 542         0x01,       /*  __u8  bDescriptorType; Device */
 543         0x10,       /*  __u16 bcdUSB; v1.1 */
 544         0x01,
 545         0x09,       /*  __u8  bDeviceClass; HUB_CLASSCODE */
 546         0x00,       /*  __u8  bDeviceSubClass; */
 547         0x00,       /*  __u8  bDeviceProtocol; */
 548         0x08,       /*  __u8  bMaxPacketSize0; 8 Bytes */
 549         0x00,       /*  __u16 idVendor; */
 550         0x00,
 551         0x00,       /*  __u16 idProduct; */
 552         0x00,
 553         0x00,       /*  __u16 bcdDevice; */
 554         0x00,
 555         0x00,       /*  __u8  iManufacturer; */
 556         0x01,       /*  __u8  iProduct; */
 557         0x00,       /*  __u8  iSerialNumber; */
 558         0x01        /*  __u8  bNumConfigurations; */
 559 };
 560
 561 /* Configuration descriptor */
 562 static __u8 root_hub_config_des[] =
 563 {
 564         0x09,       /*  __u8  bLength; */
 565         0x02,       /*  __u8  bDescriptorType; Configuration */
 566         0x19,       /*  __u16 wTotalLength; */
 567         0x00,
 568         0x01,       /*  __u8  bNumInterfaces; */
 569         0x01,       /*  __u8  bConfigurationValue; */
 570         0x00,       /*  __u8  iConfiguration; */
 571         0x40,       /*  __u8  bmAttributes; */
 572
 573         0x00,       /*  __u8  MaxPower; */
 574
 575         /* interface */
 576         0x09,       /*  __u8  if_bLength; */
 577         0x04,       /*  __u8  if_bDescriptorType; Interface */
 578         0x00,       /*  __u8  if_bInterfaceNumber; */
 579         0x00,       /*  __u8  if_bAlternateSetting; */
 580         0x01,       /*  __u8  if_bNumEndpoints; */
 581         0x09,       /*  __u8  if_bInterfaceClass; HUB_CLASSCODE */
 582         0x00,       /*  __u8  if_bInterfaceSubClass; */
 583         0x00,       /*  __u8  if_bInterfaceProtocol; */
 584         0x00,       /*  __u8  if_iInterface; */
 585
 586         /* endpoint */
 587         0x07,       /*  __u8  ep_bLength; */
 588         0x05,       /*  __u8  ep_bDescriptorType; Endpoint */
 589         0x81,       /*  __u8  ep_bEndpointAddress; IN Endpoint 1 */
 590         0x03,       /*  __u8  ep_bmAttributes; Interrupt */
 591         0x02,       /*  __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
 592         0x00,
 593         0xff        /*  __u8  ep_bInterval; 255 ms */
 594 };
 595
 596 static unsigned char root_hub_str_index0[] =
 597 {
 598         0x04,                   /*  __u8  bLength; */
 599         0x03,                   /*  __u8  bDescriptorType; String-descriptor */
 600         0x09,                   /*  __u8  lang ID */
 601         0x04,                   /*  __u8  lang ID */
 602 };
 603
 604 static unsigned char root_hub_str_index1[] =
 605 {
 606         34,                     /*  __u8  bLength; */
 607         0x03,                   /*  __u8  bDescriptorType; String-descriptor */
 608         'R',                    /*  __u8  Unicode */
 609         0,                              /*  __u8  Unicode */
 610         '8',                    /*  __u8  Unicode */
 611         0,                              /*  __u8  Unicode */
 612         'A',                    /*  __u8  Unicode */
 613         0,                              /*  __u8  Unicode */
 614         '6',                    /*  __u8  Unicode */
 615         0,                              /*  __u8  Unicode */
 616         '6',                    /*  __u8  Unicode */
 617         0,                              /*  __u8  Unicode */
 618         '5',                    /*  __u8  Unicode */
 619         0,                              /*  __u8  Unicode */
 620         '9',                    /*  __u8  Unicode */
 621         0,                              /*  __u8  Unicode */
 622         '7',                    /*  __u8  Unicode */
 623         0,                              /*  __u8  Unicode */
 624         ' ',                    /*  __u8  Unicode */
 625         0,                              /*  __u8  Unicode */
 626         'R',                    /*  __u8  Unicode */
 627         0,                              /*  __u8  Unicode */
 628         'o',                    /*  __u8  Unicode */
 629         0,                              /*  __u8  Unicode */
 630         'o',                    /*  __u8  Unicode */
 631         0,                              /*  __u8  Unicode */
 632         't',                    /*  __u8  Unicode */
 633         0,                              /*  __u8  Unicode */
 634         'H',                    /*  __u8  Unicode */
 635         0,                              /*  __u8  Unicode */
 636         'u',                    /*  __u8  Unicode */
 637         0,                              /*  __u8  Unicode */
 638         'b',                    /*  __u8  Unicode */
 639         0,                              /*  __u8  Unicode */
 640 };
 641
 642 static int r8a66597_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
 643                         void *buffer, int transfer_len, struct devrequest *cmd)
 644 {
 645         struct r8a66597 *r8a66597 = &gr8a66597;
 646         int leni = transfer_len;
 647         int len = 0;
 648         int stat = 0;
 649         __u16 bmRType_bReq;
 650         __u16 wValue;
 651         __u16 wIndex;
 652         __u16 wLength;
 653         unsigned char data[32];
 654
 655         R8A66597_DPRINT("%s\n", __func__);
 656
 657         if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
 658                 printf("Root-Hub submit IRQ: NOT implemented");
 659                 return 0;
 660         }
 661
 662         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
 663         wValue        = cpu_to_le16 (cmd->value);
 664         wIndex        = cpu_to_le16 (cmd->index);
 665         wLength       = cpu_to_le16 (cmd->length);
 666
 667         switch (bmRType_bReq) {
 668         case RH_GET_STATUS:
 669                 *(__u16 *)buffer = cpu_to_le16(1);
 670                 len = 2;
 671                 break;
 672         case RH_GET_STATUS | RH_INTERFACE:
 673                 *(__u16 *)buffer = cpu_to_le16(0);
 674                 len = 2;
 675                 break;
 676         case RH_GET_STATUS | RH_ENDPOINT:
 677                 *(__u16 *)buffer = cpu_to_le16(0);
 678                 len = 2;
 679                 break;
 680         case RH_GET_STATUS | RH_CLASS:
 681                 *(__u32 *)buffer = cpu_to_le32(0);
 682                 len = 4;
 683                 break;
 684         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
 685                 *(__u32 *)buffer = cpu_to_le32(r8a66597->port_status |
 686                                                 (r8a66597->port_change << 16));
 687                 len = 4;
 688                 break;
 689         case RH_CLEAR_FEATURE | RH_ENDPOINT:
 690         case RH_CLEAR_FEATURE | RH_CLASS:
 691                 break;
 692
 693         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
 694                 switch (wValue) {
 695                 case RH_C_PORT_CONNECTION:
 696                         r8a66597->port_change &= ~USB_PORT_STAT_C_CONNECTION;
 697                         break;
 698                 }
 699                 break;
 700
 701         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
 702                 switch (wValue) {
 703                 case (RH_PORT_SUSPEND):
 704                         break;
 705                 case (RH_PORT_RESET):
 706                         r8a66597_bus_reset(r8a66597, 0);
 707                         break;
 708                 case (RH_PORT_POWER):
 709                         break;
 710                 case (RH_PORT_ENABLE):
 711                         break;
 712                 }
 713                 break;
 714         case RH_SET_ADDRESS:
 715                 gr8a66597.rh_devnum = wValue;
 716                 break;
 717         case RH_GET_DESCRIPTOR:
 718                 switch ((wValue & 0xff00) >> 8) {
 719                 case (0x01): /* device descriptor */
 720                         len = min_t(unsigned int,
 721                                   leni,
 722                                   min_t(unsigned int,
 723                                       sizeof(root_hub_dev_des),
 724                                       wLength));
 725                         memcpy(buffer, root_hub_dev_des, len);
 726                         break;
 727                 case (0x02): /* configuration descriptor */
 728                         len = min_t(unsigned int,
 729                                   leni,
 730                                   min_t(unsigned int,
 731                                       sizeof(root_hub_config_des),
 732                                       wLength));
 733                         memcpy(buffer, root_hub_config_des, len);
 734                         break;
 735                 case (0x03): /* string descriptors */
 736                         if (wValue == 0x0300) {
 737                                 len = min_t(unsigned int,
 738                                           leni,
 739                                           min_t(unsigned int,
 740                                               sizeof(root_hub_str_index0),
 741                                               wLength));
 742                                 memcpy(buffer, root_hub_str_index0, len);
 743                         }
 744                         if (wValue == 0x0301) {
 745                                 len = min_t(unsigned int,
 746                                           leni,
 747                                           min_t(unsigned int,
 748                                               sizeof(root_hub_str_index1),
 749                                               wLength));
 750                                 memcpy(buffer, root_hub_str_index1, len);
 751                         }
 752                         break;
 753                 default:
 754                         stat = USB_ST_STALLED;
 755                 }
 756                 break;
 757
 758         case RH_GET_DESCRIPTOR | RH_CLASS:
 759         {
 760                 __u32 temp = 0x00000001;
 761
 762                 data[0] = 9;            /* min length; */
 763                 data[1] = 0x29;
 764                 data[2] = temp & RH_A_NDP;
 765                 data[3] = 0;
 766                 if (temp & RH_A_PSM)
 767                         data[3] |= 0x1;
 768                 if (temp & RH_A_NOCP)
 769                         data[3] |= 0x10;
 770                 else if (temp & RH_A_OCPM)
 771                         data[3] |= 0x8;
 772
 773                 /* corresponds to data[4-7] */
 774                 data[5] = (temp & RH_A_POTPGT) >> 24;
 775                 data[7] = temp & RH_B_DR;
 776                 if (data[2] < 7) {
 777                         data[8] = 0xff;
 778                 } else {
 779                         data[0] += 2;
 780                         data[8] = (temp & RH_B_DR) >> 8;
 781                         data[10] = data[9] = 0xff;
 782                 }
 783
 784                 len = min_t(unsigned int, leni,
 785                             min_t(unsigned int, data[0], wLength));
 786                 memcpy(buffer, data, len);
 787                 break;
 788         }
 789
 790         case RH_GET_CONFIGURATION:
 791                 *(__u8 *) buffer = 0x01;
 792                 len = 1;
 793                 break;
 794         case RH_SET_CONFIGURATION:
 795                 break;
 796         default:
 797                 dbg("unsupported root hub command");
 798                 stat = USB_ST_STALLED;
 799         }
 800
 801         wait_ms(1);
 802
 803         len = min_t(int, len, leni);
 804
 805         dev->act_len = len;
 806         dev->status = stat;
 807
 808         return stat;
 809 }
 810
 811 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 812                     int transfer_len)
 813 {
 814         struct r8a66597 *r8a66597 = &gr8a66597;
 815         int ret = 0;
 816
 817         R8A66597_DPRINT("%s\n", __func__);
 818         R8A66597_DPRINT("pipe = %08x, buffer = %p, len = %d, devnum = %d\n",
 819                         pipe, buffer, transfer_len, dev->devnum);
 820
 821         set_devadd_reg(r8a66597, dev->devnum, r8a66597->speed, 0, 0, 0);
 822
 823         pipe_buffer_setting(r8a66597, dev, pipe);
 824
 825         dev->act_len = 0;
 826         while (dev->act_len < transfer_len && ret == 0) {
 827                 if (ctrlc())
 828                         return -1;
 829
 830                 if (usb_pipein(pipe))
 831                         ret = receive_bulk_packet(r8a66597, dev, pipe, buffer,
 832                                                         transfer_len);
 833                 else
 834                         ret = send_bulk_packet(r8a66597, dev, pipe, buffer,
 835                                                         transfer_len);
 836         }
 837
 838         if (ret == 0)
 839                 dev->status = 0;
 840
 841         return ret;
 842 }
 843
 844 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
 845                        void *buffer, int transfer_len, struct devrequest *setup)
 846 {
 847         struct r8a66597 *r8a66597 = &gr8a66597;
 848         u16 r8a66597_address = setup->request == USB_REQ_SET_ADDRESS ?
 849                                         0 : dev->devnum;
 850
 851         R8A66597_DPRINT("%s\n", __func__);
 852         if (usb_pipedevice(pipe) == r8a66597->rh_devnum)
 853                 return r8a66597_submit_rh_msg(dev, pipe, buffer, transfer_len,
 854                                                 setup);
 855
 856         R8A66597_DPRINT("%s: setup\n", __func__);
 857         set_devadd_reg(r8a66597, r8a66597_address, r8a66597->speed, 0, 0, 0);
 858
 859         if (send_setup_packet(r8a66597, dev, setup) < 0) {
 860                 printf("setup packet send error\n");
 861                 return -1;
 862         }
 863
 864         if (usb_pipein(pipe))
 865                 if (receive_control_packet(r8a66597, dev, buffer,
 866                                                 transfer_len) < 0)
 867                         return -1;
 868
 869         if (send_status_packet(r8a66597, pipe) < 0)
 870                 return -1;
 871
 872         dev->status = 0;
 873
 874         return 0;
 875 }
 876
 877 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 878                         int transfer_len, int interval)
 879 {
 880         /* no implement */
 881         R8A66597_DPRINT("%s\n", __func__);
 882         return 0;
 883 }
 884
 885 void usb_event_poll(void)
 886 {
 887         /* no implement */
 888         R8A66597_DPRINT("%s\n", __func__);
 889 }
 890
 891 int usb_lowlevel_init(void)
 892 {
 893         struct r8a66597 *r8a66597 = &gr8a66597;
 894
 895         R8A66597_DPRINT("%s\n", __func__);
 896
 897         memset(r8a66597, 0, sizeof(r8a66597));
 898         r8a66597->reg = CONFIG_R8A66597_BASE_ADDR;
 899
 900         disable_controller(r8a66597);
 901         wait_ms(100);
 902
 903         enable_controller(r8a66597);
 904         r8a66597_port_power(r8a66597, 0 , 1);
 905
 906         /* check usb device */
 907         check_usb_device_connecting(r8a66597);
 908
 909         wait_ms(50);
 910
 911         return 0;
 912 }
 913
 914 int usb_lowlevel_stop(void)
 915 {
 916         disable_controller(&gr8a66597);
 917
 918         return 0;
 919 }