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  * SPDX-License-Identifier:     GPL-2.0
   7  */
   8
   9 #include <common.h>
  10 #include <console.h>
  11 #include <usb.h>
  12 #include <asm/io.h>
  13 #include <linux/iopoll.h>
  14
  15 #include "r8a66597.h"
  16
  17 #ifdef R8A66597_DEBUG
  18 #define R8A66597_DPRINT         printf
  19 #else
  20 #define R8A66597_DPRINT(...)
  21 #endif
  22
  23 static struct r8a66597 gr8a66597;
  24
  25 static void get_hub_data(struct usb_device *dev, u16 *hub_devnum, u16 *hubport)
  26 {
  27         int i;
  28
  29         *hub_devnum = 0;
  30         *hubport = 0;
  31
  32         /* check a device connected to root_hub */
  33         if ((dev->parent && dev->parent->devnum == 1) ||
  34             (dev->devnum == 1))
  35                 return;
  36
  37         for (i = 0; i < USB_MAXCHILDREN; i++) {
  38                 if (dev->parent->children[i] == dev) {
  39                         *hub_devnum = (u8)dev->parent->devnum;
  40                         *hubport = i;
  41                         return;
  42                 }
  43         }
  44
  45         printf("get_hub_data error.\n");
  46 }
  47
  48 static void set_devadd(struct r8a66597 *r8a66597, u8 r8a66597_address,
  49                         struct usb_device *dev, int port)
  50 {
  51         u16 val, usbspd, upphub, hubport;
  52         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
  53
  54         get_hub_data(dev, &upphub, &hubport);
  55         usbspd = r8a66597->speed;
  56         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
  57         r8a66597_write(r8a66597, val, devadd_reg);
  58 }
  59
  60 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
  61 {
  62         u16 tmp;
  63         int i = 0;
  64
  65 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  66         do {
  67                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
  68                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  69                 if (i++ > 1000) {
  70                         printf("register access fail.\n");
  71                         return -1;
  72                 }
  73         } while ((tmp & SCKE) != SCKE);
  74         r8a66597_write(r8a66597, 0x04, 0x02);
  75 #else
  76         do {
  77                 r8a66597_write(r8a66597, USBE, SYSCFG0);
  78                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  79                 if (i++ > 1000) {
  80                         printf("register access fail.\n");
  81                         return -1;
  82                 }
  83         } while ((tmp & USBE) != USBE);
  84         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
  85 #if !defined(CONFIG_RZA_USB)
  86         r8a66597_mdfy(r8a66597, CONFIG_R8A66597_XTAL, XTAL, SYSCFG0);
  87
  88         i = 0;
  89         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
  90         do {
  91                 udelay(1000);
  92                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  93                 if (i++ > 500) {
  94                         printf("register access fail.\n");
  95                         return -1;
  96                 }
  97         } while ((tmp & SCKE) != SCKE);
  98 #else
  99         /*
 100          * RZ/A Only:
 101          * Bits XTAL(UCKSEL) and UPLLE in SYSCFG0 for USB0 controls both USB0
 102          * and USB1, so we must always set the USB0 register
 103          */
 104 #if (CONFIG_R8A66597_XTAL == 1)
 105         setbits(le16, R8A66597_BASE0, XTAL);
 106 #endif
 107         mdelay(1);
 108         setbits(le16, R8A66597_BASE0, UPLLE);
 109         mdelay(1);
 110         r8a66597_bset(r8a66597, SUSPM, SUSPMODE0);
 111 #endif /* CONFIG_RZA_USB */
 112 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 113
 114         return 0;
 115 }
 116
 117 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 118 {
 119 #if !defined(CONFIG_RZA_USB)
 120         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 121         udelay(1);
 122 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 123         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 124         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 125         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 126 #endif
 127 #else
 128         r8a66597_bclr(r8a66597, SUSPM, SUSPMODE0);
 129
 130         clrbits(le16, R8A66597_BASE0, UPLLE);
 131         mdelay(1);
 132         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 133         mdelay(1);
 134
 135 #endif
 136 }
 137
 138 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 139 {
 140         u16 val;
 141
 142         val = port ? DRPD : DCFM | DRPD;
 143         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 144         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 145
 146 #if !defined(CONFIG_RZA_USB)
 147         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 148 #endif
 149 }
 150
 151 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 152 {
 153         u16 val, tmp;
 154
 155         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 156         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 157
 158         r8a66597_port_power(r8a66597, port, 0);
 159
 160         do {
 161                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 162                 udelay(640);
 163         } while (tmp == EDGESTS);
 164
 165         val = port ? DRPD : DCFM | DRPD;
 166         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 167         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 168 }
 169
 170 static int enable_controller(struct r8a66597 *r8a66597)
 171 {
 172         int ret, port;
 173
 174         ret = r8a66597_clock_enable(r8a66597);
 175         if (ret < 0)
 176                 return ret;
 177
 178 #if !defined(CONFIG_RZA_USB)
 179         r8a66597_bset(r8a66597, CONFIG_R8A66597_LDRV & LDRV, PINCFG);
 180 #endif
 181         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 182
 183         r8a66597_bset(r8a66597, INTL, SOFCFG);
 184         r8a66597_write(r8a66597, 0, INTENB0);
 185         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 186                 r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 187
 188         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, CFIFOSEL);
 189         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D0FIFOSEL);
 190         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D1FIFOSEL);
 191         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 192
 193         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 194                 r8a66597_enable_port(r8a66597, port);
 195
 196         return 0;
 197 }
 198
 199 static void disable_controller(struct r8a66597 *r8a66597)
 200 {
 201         int i;
 202
 203         if (!(r8a66597_read(r8a66597, SYSCFG0) & USBE))
 204                 return;
 205
 206         r8a66597_write(r8a66597, 0, INTENB0);
 207         r8a66597_write(r8a66597, 0, INTSTS0);
 208
 209         r8a66597_write(r8a66597, 0, D0FIFOSEL);
 210         r8a66597_write(r8a66597, 0, D1FIFOSEL);
 211         r8a66597_write(r8a66597, 0, DCPCFG);
 212         r8a66597_write(r8a66597, 0x40, DCPMAXP);
 213         r8a66597_write(r8a66597, 0, DCPCTR);
 214
 215         for (i = 0; i <= 10; i++)
 216                 r8a66597_write(r8a66597, 0, get_devadd_addr(i));
 217         for (i = 1; i <= 5; i++) {
 218                 r8a66597_write(r8a66597, 0, get_pipetre_addr(i));
 219                 r8a66597_write(r8a66597, 0, get_pipetrn_addr(i));
 220         }
 221         for (i = 1; i < R8A66597_MAX_NUM_PIPE; i++) {
 222                 r8a66597_write(r8a66597, 0, get_pipectr_addr(i));
 223                 r8a66597_write(r8a66597, i, PIPESEL);
 224                 r8a66597_write(r8a66597, 0, PIPECFG);
 225                 r8a66597_write(r8a66597, 0, PIPEBUF);
 226                 r8a66597_write(r8a66597, 0, PIPEMAXP);
 227                 r8a66597_write(r8a66597, 0, PIPEPERI);
 228         }
 229
 230         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++)
 231                 r8a66597_disable_port(r8a66597, i);
 232
 233         r8a66597_clock_disable(r8a66597);
 234 }
 235
 236 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 237                               u16 mask, u16 loop)
 238 {
 239         u16 tmp;
 240         int i = 0;
 241
 242         do {
 243                 tmp = r8a66597_read(r8a66597, reg);
 244                 if (i++ > 1000000) {
 245                         printf("register%lx, loop %x is timeout\n", reg, loop);
 246                         break;
 247                 }
 248         } while ((tmp & mask) != loop);
 249 }
 250
 251 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 252                                 struct usb_device *dev, unsigned long pipe)
 253 {
 254         u16 val = 0;
 255         u16 pipenum, bufnum, maxpacket;
 256
 257         if (usb_pipein(pipe)) {
 258                 pipenum = BULK_IN_PIPENUM;
 259                 bufnum = BULK_IN_BUFNUM;
 260                 maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 261         } else {
 262                 pipenum = BULK_OUT_PIPENUM;
 263                 bufnum = BULK_OUT_BUFNUM;
 264                 maxpacket = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 265         }
 266
 267         if (r8a66597->pipe_config & (1 << pipenum))
 268                 return;
 269         r8a66597->pipe_config |= (1 << pipenum);
 270
 271         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 272         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 273         r8a66597_write(r8a66597, pipenum, PIPESEL);
 274
 275         /* FIXME: This driver support bulk transfer only. */
 276         if (!usb_pipein(pipe))
 277                 val |= R8A66597_DIR;
 278         else
 279                 val |= R8A66597_SHTNAK;
 280         val |= R8A66597_BULK | R8A66597_DBLB | usb_pipeendpoint(pipe);
 281         r8a66597_write(r8a66597, val, PIPECFG);
 282
 283         r8a66597_write(r8a66597, (8 << 10) | bufnum, PIPEBUF);
 284         r8a66597_write(r8a66597, make_devsel(usb_pipedevice(pipe)) |
 285                                  maxpacket, PIPEMAXP);
 286         r8a66597_write(r8a66597, 0, PIPEPERI);
 287         r8a66597_write(r8a66597, SQCLR, get_pipectr_addr(pipenum));
 288 }
 289
 290 static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 291                              struct devrequest *setup)
 292 {
 293         int i;
 294         unsigned short *p = (unsigned short *)setup;
 295         unsigned long setup_addr = USBREQ;
 296         u16 intsts1;
 297         int timeout = 3000;
 298 #if defined(CONFIG_RZA_USB)
 299         u16 dcpctr;
 300 #endif
 301         u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
 302
 303         r8a66597_write(r8a66597, make_devsel(devsel) |
 304                                  (8 << dev->maxpacketsize), DCPMAXP);
 305         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 306
 307 #if defined(CONFIG_RZA_USB)
 308         dcpctr = r8a66597_read(r8a66597, DCPCTR);
 309         if ((dcpctr & PID) == PID_BUF) {
 310                 if (readw_poll_timeout(r8a66597->reg + DCPCTR, dcpctr,
 311                                        dcpctr & BSTS, 1000) < 0) {
 312                         printf("DCPCTR BSTS timeout!\n");
 313                         return -ETIMEDOUT;
 314                 }
 315         }
 316 #endif
 317
 318         for (i = 0; i < 4; i++) {
 319                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
 320                 setup_addr += 2;
 321         }
 322         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 323         r8a66597_write(r8a66597, SUREQ, DCPCTR);
 324
 325         while (1) {
 326                 intsts1 = r8a66597_read(r8a66597, INTSTS1);
 327                 if (intsts1 & SACK)
 328                         break;
 329                 if (intsts1 & SIGN) {
 330                         printf("setup packet send error\n");
 331                         return -1;
 332                 }
 333                 if (timeout-- < 0) {
 334                         printf("setup packet timeout\n");
 335                         return -1;
 336                 }
 337                 udelay(500);
 338         }
 339
 340         return 0;
 341 }
 342
 343 static int send_bulk_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 344                             unsigned long pipe, void *buffer, int transfer_len)
 345 {
 346         u16 tmp, bufsize;
 347         u16 *buf;
 348         size_t size;
 349
 350         R8A66597_DPRINT("%s\n", __func__);
 351
 352         r8a66597_mdfy(r8a66597, MBW | BULK_OUT_PIPENUM,
 353                         MBW | CURPIPE, CFIFOSEL);
 354         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, BULK_OUT_PIPENUM);
 355         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 356         if ((tmp & FRDY) == 0) {
 357                 printf("%s FRDY is not set (%x)\n", __func__, tmp);
 358                 return -1;
 359         }
 360
 361         /* prepare parameters */
 362         bufsize = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 363         buf = (u16 *)(buffer + dev->act_len);
 364         size = min((int)bufsize, transfer_len - dev->act_len);
 365
 366         /* write fifo */
 367         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 368         if (buffer) {
 369                 r8a66597_write_fifo(r8a66597, CFIFO, buf, size);
 370                 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
 371         }
 372
 373         /* update parameters */
 374         dev->act_len += size;
 375
 376         r8a66597_mdfy(r8a66597, PID_BUF, PID,
 377                         get_pipectr_addr(BULK_OUT_PIPENUM));
 378
 379         while (!(r8a66597_read(r8a66597, BEMPSTS) & (1 << BULK_OUT_PIPENUM)))
 380                 if (ctrlc())
 381                         return -1;
 382         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 383
 384         if (dev->act_len >= transfer_len)
 385                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
 386                                 get_pipectr_addr(BULK_OUT_PIPENUM));
 387
 388         return 0;
 389 }
 390
 391 static int receive_bulk_packet(struct r8a66597 *r8a66597,
 392                                struct usb_device *dev,
 393                                unsigned long pipe,
 394                                void *buffer, int transfer_len)
 395 {
 396         u16 tmp;
 397         u16 *buf;
 398         const u16 pipenum = BULK_IN_PIPENUM;
 399         int rcv_len;
 400         int maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 401
 402         R8A66597_DPRINT("%s\n", __func__);
 403
 404         /* prepare */
 405         if (dev->act_len == 0) {
 406                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
 407                                 get_pipectr_addr(pipenum));
 408                 r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 409
 410                 r8a66597_write(r8a66597, TRCLR, get_pipetre_addr(pipenum));
 411                 r8a66597_write(r8a66597,
 412                                 (transfer_len + maxpacket - 1) / maxpacket,
 413                                 get_pipetrn_addr(pipenum));
 414                 r8a66597_bset(r8a66597, TRENB, get_pipetre_addr(pipenum));
 415
 416                 r8a66597_mdfy(r8a66597, PID_BUF, PID,
 417                                 get_pipectr_addr(pipenum));
 418         }
 419
 420         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 421         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 422
 423         while (!(r8a66597_read(r8a66597, BRDYSTS) & (1 << pipenum)))
 424                 if (ctrlc())
 425                         return -1;
 426         r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 427
 428         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 429         if ((tmp & FRDY) == 0) {
 430                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 431                 return -1;
 432         }
 433
 434         buf = (u16 *)(buffer + dev->act_len);
 435         rcv_len = tmp & DTLN;
 436         dev->act_len += rcv_len;
 437
 438         if (buffer) {
 439                 if (rcv_len == 0)
 440                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 441                 else
 442                         r8a66597_read_fifo(r8a66597, CFIFO, buf, rcv_len);
 443         }
 444
 445         return 0;
 446 }
 447
 448 static int receive_control_packet(struct r8a66597 *r8a66597,
 449                                   struct usb_device *dev,
 450                                   void *buffer, int transfer_len)
 451 {
 452         u16 tmp;
 453         int rcv_len;
 454
 455         /* FIXME: limit transfer size : 64byte or less */
 456
 457         r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 458         r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 459         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 460         r8a66597_bset(r8a66597, SQSET, DCPCTR);
 461         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 462         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 463
 464         while (!(r8a66597_read(r8a66597, BRDYSTS) & 0x0001))
 465                 if (ctrlc())
 466                         return -1;
 467         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 468
 469         r8a66597_mdfy(r8a66597, MBW, MBW | CURPIPE, CFIFOSEL);
 470         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 471
 472         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 473         if ((tmp & FRDY) == 0) {
 474                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 475                 return -1;
 476         }
 477
 478         rcv_len = tmp & DTLN;
 479         dev->act_len += rcv_len;
 480
 481         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 482
 483         if (buffer) {
 484                 if (rcv_len == 0)
 485                         r8a66597_write(r8a66597, BCLR, DCPCTR);
 486                 else
 487                         r8a66597_read_fifo(r8a66597, CFIFO, buffer, rcv_len);
 488         }
 489
 490         return 0;
 491 }
 492
 493 static int send_status_packet(struct r8a66597 *r8a66597,
 494                                unsigned long pipe)
 495 {
 496         r8a66597_bset(r8a66597, SQSET, DCPCTR);
 497         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 498
 499         if (usb_pipein(pipe)) {
 500                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
 501                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
 502                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 503                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
 504                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
 505         } else {
 506                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 507                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 508                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 509                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 510         }
 511         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 512
 513         while (!(r8a66597_read(r8a66597, BEMPSTS) & 0x0001))
 514                 if (ctrlc())
 515                         return -1;
 516
 517         return 0;
 518 }
 519
 520 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port)
 521 {
 522         int count = R8A66597_MAX_SAMPLING;
 523         unsigned short syssts, old_syssts;
 524
 525         R8A66597_DPRINT("%s\n", __func__);
 526
 527         old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 528         while (count > 0) {
 529                 mdelay(R8A66597_RH_POLL_TIME);
 530
 531                 syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 532                 if (syssts == old_syssts) {
 533                         count--;
 534                 } else {
 535                         count = R8A66597_MAX_SAMPLING;
 536                         old_syssts = syssts;
 537                 }
 538         }
 539 }
 540
 541 static void r8a66597_bus_reset(struct r8a66597 *r8a66597, int port)
 542 {
 543         mdelay(10);
 544         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port));
 545         mdelay(50);
 546         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, get_dvstctr_reg(port));
 547         mdelay(50);
 548 }
 549
 550 static int check_usb_device_connecting(struct r8a66597 *r8a66597)
 551 {
 552         int timeout = 10000;    /* 100usec * 10000 = 1sec */
 553         int i;
 554
 555         for (i = 0; i < 5; i++) {
 556                 /* check a usb cable connect */
 557                 while (!(r8a66597_read(r8a66597, INTSTS1) & ATTCH)) {
 558                         if (timeout-- < 0) {
 559                                 printf("%s timeout.\n", __func__);
 560                                 return -1;
 561                         }
 562                         udelay(100);
 563                 }
 564
 565                 /* check a data line */
 566                 r8a66597_check_syssts(r8a66597, 0);
 567
 568                 r8a66597_bus_reset(r8a66597, 0);
 569                 r8a66597->speed = get_rh_usb_speed(r8a66597, 0);
 570
 571                 if (!(r8a66597_read(r8a66597, INTSTS1) & DTCH)) {
 572                         r8a66597->port_change = USB_PORT_STAT_C_CONNECTION;
 573                         r8a66597->port_status = USB_PORT_STAT_CONNECTION |
 574                                                 USB_PORT_STAT_ENABLE;
 575                         return 0;       /* success */
 576                 }
 577
 578                 R8A66597_DPRINT("USB device has detached. retry = %d\n", i);
 579                 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
 580         }
 581
 582         return -1;      /* fail */
 583 }
 584
 585 /*-------------------------------------------------------------------------*
 586  * Virtual Root Hub
 587  *-------------------------------------------------------------------------*/
 588
 589 #include <usbroothubdes.h>
 590
 591 static int r8a66597_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
 592                         void *buffer, int transfer_len, struct devrequest *cmd)
 593 {
 594         struct r8a66597 *r8a66597 = &gr8a66597;
 595         int leni = transfer_len;
 596         int len = 0;
 597         int stat = 0;
 598         __u16 bmRType_bReq;
 599         __u16 wValue;
 600         __u16 wLength;
 601         unsigned char data[32];
 602
 603         R8A66597_DPRINT("%s\n", __func__);
 604
 605         if (usb_pipeint(pipe)) {
 606                 printf("Root-Hub submit IRQ: NOT implemented");
 607                 return 0;
 608         }
 609
 610         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
 611         wValue        = cpu_to_le16 (cmd->value);
 612         wLength       = cpu_to_le16 (cmd->length);
 613
 614         switch (bmRType_bReq) {
 615         case RH_GET_STATUS:
 616                 *(__u16 *)buffer = cpu_to_le16(1);
 617                 len = 2;
 618                 break;
 619         case RH_GET_STATUS | RH_INTERFACE:
 620                 *(__u16 *)buffer = cpu_to_le16(0);
 621                 len = 2;
 622                 break;
 623         case RH_GET_STATUS | RH_ENDPOINT:
 624                 *(__u16 *)buffer = cpu_to_le16(0);
 625                 len = 2;
 626                 break;
 627         case RH_GET_STATUS | RH_CLASS:
 628                 *(__u32 *)buffer = cpu_to_le32(0);
 629                 len = 4;
 630                 break;
 631         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
 632                 *(__u32 *)buffer = cpu_to_le32(r8a66597->port_status |
 633                                                 (r8a66597->port_change << 16));
 634                 len = 4;
 635                 break;
 636         case RH_CLEAR_FEATURE | RH_ENDPOINT:
 637         case RH_CLEAR_FEATURE | RH_CLASS:
 638                 break;
 639
 640         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
 641                 switch (wValue) {
 642                 case RH_C_PORT_CONNECTION:
 643                         r8a66597->port_change &= ~USB_PORT_STAT_C_CONNECTION;
 644                         break;
 645                 }
 646                 break;
 647
 648         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
 649                 switch (wValue) {
 650                 case (RH_PORT_SUSPEND):
 651                         break;
 652                 case (RH_PORT_RESET):
 653                         r8a66597_bus_reset(r8a66597, 0);
 654                         break;
 655                 case (RH_PORT_POWER):
 656                         break;
 657                 case (RH_PORT_ENABLE):
 658                         break;
 659                 }
 660                 break;
 661         case RH_SET_ADDRESS:
 662                 gr8a66597.rh_devnum = wValue;
 663                 break;
 664         case RH_GET_DESCRIPTOR:
 665                 switch ((wValue & 0xff00) >> 8) {
 666                 case (0x01): /* device descriptor */
 667                         len = min_t(unsigned int,
 668                                   leni,
 669                                   min_t(unsigned int,
 670                                       sizeof(root_hub_dev_des),
 671                                       wLength));
 672                         memcpy(buffer, root_hub_dev_des, len);
 673                         break;
 674                 case (0x02): /* configuration descriptor */
 675                         len = min_t(unsigned int,
 676                                   leni,
 677                                   min_t(unsigned int,
 678                                       sizeof(root_hub_config_des),
 679                                       wLength));
 680                         memcpy(buffer, root_hub_config_des, len);
 681                         break;
 682                 case (0x03): /* string descriptors */
 683                         if (wValue == 0x0300) {
 684                                 len = min_t(unsigned int,
 685                                           leni,
 686                                           min_t(unsigned int,
 687                                               sizeof(root_hub_str_index0),
 688                                               wLength));
 689                                 memcpy(buffer, root_hub_str_index0, len);
 690                         }
 691                         if (wValue == 0x0301) {
 692                                 len = min_t(unsigned int,
 693                                           leni,
 694                                           min_t(unsigned int,
 695                                               sizeof(root_hub_str_index1),
 696                                               wLength));
 697                                 memcpy(buffer, root_hub_str_index1, len);
 698                         }
 699                         break;
 700                 default:
 701                         stat = USB_ST_STALLED;
 702                 }
 703                 break;
 704
 705         case RH_GET_DESCRIPTOR | RH_CLASS:
 706         {
 707                 __u32 temp = 0x00000001;
 708
 709                 data[0] = 9;            /* min length; */
 710                 data[1] = 0x29;
 711                 data[2] = temp & RH_A_NDP;
 712                 data[3] = 0;
 713                 if (temp & RH_A_PSM)
 714                         data[3] |= 0x1;
 715                 if (temp & RH_A_NOCP)
 716                         data[3] |= 0x10;
 717                 else if (temp & RH_A_OCPM)
 718                         data[3] |= 0x8;
 719
 720                 /* corresponds to data[4-7] */
 721                 data[5] = (temp & RH_A_POTPGT) >> 24;
 722                 data[7] = temp & RH_B_DR;
 723                 if (data[2] < 7) {
 724                         data[8] = 0xff;
 725                 } else {
 726                         data[0] += 2;
 727                         data[8] = (temp & RH_B_DR) >> 8;
 728                         data[10] = data[9] = 0xff;
 729                 }
 730
 731                 len = min_t(unsigned int, leni,
 732                             min_t(unsigned int, data[0], wLength));
 733                 memcpy(buffer, data, len);
 734                 break;
 735         }
 736
 737         case RH_GET_CONFIGURATION:
 738                 *(__u8 *) buffer = 0x01;
 739                 len = 1;
 740                 break;
 741         case RH_SET_CONFIGURATION:
 742                 break;
 743         default:
 744                 R8A66597_DPRINT("unsupported root hub command");
 745                 stat = USB_ST_STALLED;
 746         }
 747
 748         mdelay(1);
 749
 750         len = min_t(int, len, leni);
 751
 752         dev->act_len = len;
 753         dev->status = stat;
 754
 755         return stat;
 756 }
 757
 758 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 759                     int transfer_len)
 760 {
 761         struct r8a66597 *r8a66597 = &gr8a66597;
 762         int ret = 0;
 763
 764         R8A66597_DPRINT("%s\n", __func__);
 765         R8A66597_DPRINT("pipe = %08x, buffer = %p, len = %d, devnum = %d\n",
 766                         pipe, buffer, transfer_len, dev->devnum);
 767
 768         set_devadd(r8a66597, dev->devnum, dev, 0);
 769
 770         pipe_buffer_setting(r8a66597, dev, pipe);
 771
 772         dev->act_len = 0;
 773         while (dev->act_len < transfer_len && ret == 0) {
 774                 if (ctrlc())
 775                         return -1;
 776
 777                 if (usb_pipein(pipe))
 778                         ret = receive_bulk_packet(r8a66597, dev, pipe, buffer,
 779                                                         transfer_len);
 780                 else
 781                         ret = send_bulk_packet(r8a66597, dev, pipe, buffer,
 782                                                         transfer_len);
 783         }
 784
 785         if (ret == 0)
 786                 dev->status = 0;
 787
 788         return ret;
 789 }
 790
 791 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
 792                        void *buffer, int transfer_len, struct devrequest *setup)
 793 {
 794         struct r8a66597 *r8a66597 = &gr8a66597;
 795         u16 r8a66597_address = setup->request == USB_REQ_SET_ADDRESS ?
 796                                         0 : dev->devnum;
 797
 798         R8A66597_DPRINT("%s\n", __func__);
 799         if (usb_pipedevice(pipe) == r8a66597->rh_devnum)
 800                 return r8a66597_submit_rh_msg(dev, pipe, buffer, transfer_len,
 801                                                 setup);
 802
 803         R8A66597_DPRINT("%s: setup\n", __func__);
 804         set_devadd(r8a66597, r8a66597_address, dev, 0);
 805
 806         if (send_setup_packet(r8a66597, dev, setup) < 0) {
 807                 printf("setup packet send error\n");
 808                 return -1;
 809         }
 810
 811         dev->act_len = 0;
 812         if (usb_pipein(pipe))
 813                 if (receive_control_packet(r8a66597, dev, buffer,
 814                                                 transfer_len) < 0)
 815                         return -1;
 816
 817         if (send_status_packet(r8a66597, pipe) < 0)
 818                 return -1;
 819
 820         dev->status = 0;
 821
 822         return 0;
 823 }
 824
 825 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 826                         int transfer_len, int interval)
 827 {
 828         /* no implement */
 829         R8A66597_DPRINT("%s\n", __func__);
 830         return 0;
 831 }
 832
 833 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 834 {
 835         struct r8a66597 *r8a66597 = &gr8a66597;
 836
 837         R8A66597_DPRINT("%s\n", __func__);
 838
 839         memset(r8a66597, 0, sizeof(*r8a66597));
 840         r8a66597->reg = CONFIG_R8A66597_BASE_ADDR;
 841
 842         disable_controller(r8a66597);
 843         mdelay(100);
 844
 845         enable_controller(r8a66597);
 846         r8a66597_port_power(r8a66597, 0 , 1);
 847
 848         /* check usb device */
 849         check_usb_device_connecting(r8a66597);
 850
 851         mdelay(50);
 852
 853         return 0;
 854 }
 855
 856 int usb_lowlevel_stop(int index)
 857 {
 858         disable_controller(&gr8a66597);
 859
 860         return 0;
 861 }