uboot/drivers/usb/host/r8a66597-hcd.c
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   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
  23static const char hcd_name[] = "r8a66597_hcd";
  24static struct r8a66597 gr8a66597;
  25
  26static void get_hub_data(struct usb_device *dev, u16 *hub_devnum, u16 *hubport)
  27{
  28        int i;
  29
  30        *hub_devnum = 0;
  31        *hubport = 0;
  32
  33        /* check a device connected to root_hub */
  34        if ((dev->parent && dev->parent->devnum == 1) ||
  35            (dev->devnum == 1))
  36                return;
  37
  38        for (i = 0; i < USB_MAXCHILDREN; i++) {
  39                if (dev->parent->children[i] == dev) {
  40                        *hub_devnum = (u8)dev->parent->devnum;
  41                        *hubport = i;
  42                        return;
  43                }
  44        }
  45
  46        printf("get_hub_data error.\n");
  47}
  48
  49static void set_devadd(struct r8a66597 *r8a66597, u8 r8a66597_address,
  50                        struct usb_device *dev, int port)
  51{
  52        u16 val, usbspd, upphub, hubport;
  53        unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
  54
  55        get_hub_data(dev, &upphub, &hubport);
  56        usbspd = r8a66597->speed;
  57        val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
  58        r8a66597_write(r8a66597, val, devadd_reg);
  59}
  60
  61static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
  62{
  63        u16 tmp;
  64        int i = 0;
  65
  66#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  67        do {
  68                r8a66597_write(r8a66597, SCKE, SYSCFG0);
  69                tmp = r8a66597_read(r8a66597, SYSCFG0);
  70                if (i++ > 1000) {
  71                        printf("register access fail.\n");
  72                        return -1;
  73                }
  74        } while ((tmp & SCKE) != SCKE);
  75        r8a66597_write(r8a66597, 0x04, 0x02);
  76#else
  77        do {
  78                r8a66597_write(r8a66597, USBE, SYSCFG0);
  79                tmp = r8a66597_read(r8a66597, SYSCFG0);
  80                if (i++ > 1000) {
  81                        printf("register access fail.\n");
  82                        return -1;
  83                }
  84        } while ((tmp & USBE) != USBE);
  85        r8a66597_bclr(r8a66597, USBE, SYSCFG0);
  86#if !defined(CONFIG_RZA_USB)
  87        r8a66597_mdfy(r8a66597, CONFIG_R8A66597_XTAL, XTAL, SYSCFG0);
  88
  89        i = 0;
  90        r8a66597_bset(r8a66597, XCKE, SYSCFG0);
  91        do {
  92                udelay(1000);
  93                tmp = r8a66597_read(r8a66597, SYSCFG0);
  94                if (i++ > 500) {
  95                        printf("register access fail.\n");
  96                        return -1;
  97                }
  98        } while ((tmp & SCKE) != SCKE);
  99#else
 100        /*
 101         * RZ/A Only:
 102         * Bits XTAL(UCKSEL) and UPLLE in SYSCFG0 for USB0 controls both USB0
 103         * and USB1, so we must always set the USB0 register
 104         */
 105#if (CONFIG_R8A66597_XTAL == 1)
 106        setbits(le16, R8A66597_BASE0, XTAL);
 107#endif
 108        mdelay(1);
 109        setbits(le16, R8A66597_BASE0, UPLLE);
 110        mdelay(1);
 111        r8a66597_bset(r8a66597, SUSPM, SUSPMODE0);
 112#endif /* CONFIG_RZA_USB */
 113#endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 114
 115        return 0;
 116}
 117
 118static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 119{
 120#if !defined(CONFIG_RZA_USB)
 121        r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 122        udelay(1);
 123#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 124        r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 125        r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 126        r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 127#endif
 128#else
 129        r8a66597_bclr(r8a66597, SUSPM, SUSPMODE0);
 130
 131        clrbits(le16, R8A66597_BASE0, UPLLE);
 132        mdelay(1);
 133        r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 134        mdelay(1);
 135
 136#endif
 137}
 138
 139static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 140{
 141        u16 val;
 142
 143        val = port ? DRPD : DCFM | DRPD;
 144        r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 145        r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 146
 147#if !defined(CONFIG_RZA_USB)
 148        r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 149#endif
 150}
 151
 152static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 153{
 154        u16 val, tmp;
 155
 156        r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 157        r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 158
 159        r8a66597_port_power(r8a66597, port, 0);
 160
 161        do {
 162                tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 163                udelay(640);
 164        } while (tmp == EDGESTS);
 165
 166        val = port ? DRPD : DCFM | DRPD;
 167        r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 168        r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 169}
 170
 171static int enable_controller(struct r8a66597 *r8a66597)
 172{
 173        int ret, port;
 174
 175        ret = r8a66597_clock_enable(r8a66597);
 176        if (ret < 0)
 177                return ret;
 178
 179#if !defined(CONFIG_RZA_USB)
 180        r8a66597_bset(r8a66597, CONFIG_R8A66597_LDRV & LDRV, PINCFG);
 181#endif
 182        r8a66597_bset(r8a66597, USBE, SYSCFG0);
 183
 184        r8a66597_bset(r8a66597, INTL, SOFCFG);
 185        r8a66597_write(r8a66597, 0, INTENB0);
 186        for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 187                r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 188
 189        r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, CFIFOSEL);
 190        r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D0FIFOSEL);
 191        r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D1FIFOSEL);
 192        r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 193
 194        for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 195                r8a66597_enable_port(r8a66597, port);
 196
 197        return 0;
 198}
 199
 200static void disable_controller(struct r8a66597 *r8a66597)
 201{
 202        int i;
 203
 204        if (!(r8a66597_read(r8a66597, SYSCFG0) & USBE))
 205                return;
 206
 207        r8a66597_write(r8a66597, 0, INTENB0);
 208        r8a66597_write(r8a66597, 0, INTSTS0);
 209
 210        r8a66597_write(r8a66597, 0, D0FIFOSEL);
 211        r8a66597_write(r8a66597, 0, D1FIFOSEL);
 212        r8a66597_write(r8a66597, 0, DCPCFG);
 213        r8a66597_write(r8a66597, 0x40, DCPMAXP);
 214        r8a66597_write(r8a66597, 0, DCPCTR);
 215
 216        for (i = 0; i <= 10; i++)
 217                r8a66597_write(r8a66597, 0, get_devadd_addr(i));
 218        for (i = 1; i <= 5; i++) {
 219                r8a66597_write(r8a66597, 0, get_pipetre_addr(i));
 220                r8a66597_write(r8a66597, 0, get_pipetrn_addr(i));
 221        }
 222        for (i = 1; i < R8A66597_MAX_NUM_PIPE; i++) {
 223                r8a66597_write(r8a66597, 0, get_pipectr_addr(i));
 224                r8a66597_write(r8a66597, i, PIPESEL);
 225                r8a66597_write(r8a66597, 0, PIPECFG);
 226                r8a66597_write(r8a66597, 0, PIPEBUF);
 227                r8a66597_write(r8a66597, 0, PIPEMAXP);
 228                r8a66597_write(r8a66597, 0, PIPEPERI);
 229        }
 230
 231        for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++)
 232                r8a66597_disable_port(r8a66597, i);
 233
 234        r8a66597_clock_disable(r8a66597);
 235}
 236
 237static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 238                              u16 mask, u16 loop)
 239{
 240        u16 tmp;
 241        int i = 0;
 242
 243        do {
 244                tmp = r8a66597_read(r8a66597, reg);
 245                if (i++ > 1000000) {
 246                        printf("register%lx, loop %x is timeout\n", reg, loop);
 247                        break;
 248                }
 249        } while ((tmp & mask) != loop);
 250}
 251
 252static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 253                                struct usb_device *dev, unsigned long pipe)
 254{
 255        u16 val = 0;
 256        u16 pipenum, bufnum, maxpacket;
 257
 258        if (usb_pipein(pipe)) {
 259                pipenum = BULK_IN_PIPENUM;
 260                bufnum = BULK_IN_BUFNUM;
 261                maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 262        } else {
 263                pipenum = BULK_OUT_PIPENUM;
 264                bufnum = BULK_OUT_BUFNUM;
 265                maxpacket = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 266        }
 267
 268        if (r8a66597->pipe_config & (1 << pipenum))
 269                return;
 270        r8a66597->pipe_config |= (1 << pipenum);
 271
 272        r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 273        r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 274        r8a66597_write(r8a66597, pipenum, PIPESEL);
 275
 276        /* FIXME: This driver support bulk transfer only. */
 277        if (!usb_pipein(pipe))
 278                val |= R8A66597_DIR;
 279        else
 280                val |= R8A66597_SHTNAK;
 281        val |= R8A66597_BULK | R8A66597_DBLB | usb_pipeendpoint(pipe);
 282        r8a66597_write(r8a66597, val, PIPECFG);
 283
 284        r8a66597_write(r8a66597, (8 << 10) | bufnum, PIPEBUF);
 285        r8a66597_write(r8a66597, make_devsel(usb_pipedevice(pipe)) |
 286                                 maxpacket, PIPEMAXP);
 287        r8a66597_write(r8a66597, 0, PIPEPERI);
 288        r8a66597_write(r8a66597, SQCLR, get_pipectr_addr(pipenum));
 289}
 290
 291static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 292                             struct devrequest *setup)
 293{
 294        int i;
 295        unsigned short *p = (unsigned short *)setup;
 296        unsigned long setup_addr = USBREQ;
 297        u16 intsts1;
 298        int timeout = 3000;
 299#if defined(CONFIG_RZA_USB)
 300        u16 dcpctr;
 301#endif
 302        u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
 303
 304        r8a66597_write(r8a66597, make_devsel(devsel) |
 305                                 (8 << dev->maxpacketsize), DCPMAXP);
 306        r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 307
 308#if defined(CONFIG_RZA_USB)
 309        dcpctr = r8a66597_read(r8a66597, DCPCTR);
 310        if ((dcpctr & PID) == PID_BUF) {
 311                if (readw_poll_timeout(r8a66597->reg + DCPCTR, dcpctr,
 312                                       dcpctr & BSTS, 1000) < 0) {
 313                        printf("DCPCTR BSTS timeout!\n");
 314                        return -ETIMEDOUT;
 315                }
 316        }
 317#endif
 318
 319        for (i = 0; i < 4; i++) {
 320                r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
 321                setup_addr += 2;
 322        }
 323        r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 324        r8a66597_write(r8a66597, SUREQ, DCPCTR);
 325
 326        while (1) {
 327                intsts1 = r8a66597_read(r8a66597, INTSTS1);
 328                if (intsts1 & SACK)
 329                        break;
 330                if (intsts1 & SIGN) {
 331                        printf("setup packet send error\n");
 332                        return -1;
 333                }
 334                if (timeout-- < 0) {
 335                        printf("setup packet timeout\n");
 336                        return -1;
 337                }
 338                udelay(500);
 339        }
 340
 341        return 0;
 342}
 343
 344static int send_bulk_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 345                            unsigned long pipe, void *buffer, int transfer_len)
 346{
 347        u16 tmp, bufsize;
 348        u16 *buf;
 349        size_t size;
 350
 351        R8A66597_DPRINT("%s\n", __func__);
 352
 353        r8a66597_mdfy(r8a66597, MBW | BULK_OUT_PIPENUM,
 354                        MBW | CURPIPE, CFIFOSEL);
 355        r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, BULK_OUT_PIPENUM);
 356        tmp = r8a66597_read(r8a66597, CFIFOCTR);
 357        if ((tmp & FRDY) == 0) {
 358                printf("%s FRDY is not set (%x)\n", __func__, tmp);
 359                return -1;
 360        }
 361
 362        /* prepare parameters */
 363        bufsize = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 364        buf = (u16 *)(buffer + dev->act_len);
 365        size = min((int)bufsize, transfer_len - dev->act_len);
 366
 367        /* write fifo */
 368        r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 369        if (buffer) {
 370                r8a66597_write_fifo(r8a66597, CFIFO, buf, size);
 371                r8a66597_write(r8a66597, BVAL, CFIFOCTR);
 372        }
 373
 374        /* update parameters */
 375        dev->act_len += size;
 376
 377        r8a66597_mdfy(r8a66597, PID_BUF, PID,
 378                        get_pipectr_addr(BULK_OUT_PIPENUM));
 379
 380        while (!(r8a66597_read(r8a66597, BEMPSTS) & (1 << BULK_OUT_PIPENUM)))
 381                if (ctrlc())
 382                        return -1;
 383        r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 384
 385        if (dev->act_len >= transfer_len)
 386                r8a66597_mdfy(r8a66597, PID_NAK, PID,
 387                                get_pipectr_addr(BULK_OUT_PIPENUM));
 388
 389        return 0;
 390}
 391
 392static int receive_bulk_packet(struct r8a66597 *r8a66597,
 393                               struct usb_device *dev,
 394                               unsigned long pipe,
 395                               void *buffer, int transfer_len)
 396{
 397        u16 tmp;
 398        u16 *buf;
 399        const u16 pipenum = BULK_IN_PIPENUM;
 400        int rcv_len;
 401        int maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 402
 403        R8A66597_DPRINT("%s\n", __func__);
 404
 405        /* prepare */
 406        if (dev->act_len == 0) {
 407                r8a66597_mdfy(r8a66597, PID_NAK, PID,
 408                                get_pipectr_addr(pipenum));
 409                r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 410
 411                r8a66597_write(r8a66597, TRCLR, get_pipetre_addr(pipenum));
 412                r8a66597_write(r8a66597,
 413                                (transfer_len + maxpacket - 1) / maxpacket,
 414                                get_pipetrn_addr(pipenum));
 415                r8a66597_bset(r8a66597, TRENB, get_pipetre_addr(pipenum));
 416
 417                r8a66597_mdfy(r8a66597, PID_BUF, PID,
 418                                get_pipectr_addr(pipenum));
 419        }
 420
 421        r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 422        r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 423
 424        while (!(r8a66597_read(r8a66597, BRDYSTS) & (1 << pipenum)))
 425                if (ctrlc())
 426                        return -1;
 427        r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 428
 429        tmp = r8a66597_read(r8a66597, CFIFOCTR);
 430        if ((tmp & FRDY) == 0) {
 431                printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 432                return -1;
 433        }
 434
 435        buf = (u16 *)(buffer + dev->act_len);
 436        rcv_len = tmp & DTLN;
 437        dev->act_len += rcv_len;
 438
 439        if (buffer) {
 440                if (rcv_len == 0)
 441                        r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 442                else
 443                        r8a66597_read_fifo(r8a66597, CFIFO, buf, rcv_len);
 444        }
 445
 446        return 0;
 447}
 448
 449static int receive_control_packet(struct r8a66597 *r8a66597,
 450                                  struct usb_device *dev,
 451                                  void *buffer, int transfer_len)
 452{
 453        u16 tmp;
 454        int rcv_len;
 455
 456        /* FIXME: limit transfer size : 64byte or less */
 457
 458        r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 459        r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 460        r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 461        r8a66597_bset(r8a66597, SQSET, DCPCTR);
 462        r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 463        r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 464
 465        while (!(r8a66597_read(r8a66597, BRDYSTS) & 0x0001))
 466                if (ctrlc())
 467                        return -1;
 468        r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 469
 470        r8a66597_mdfy(r8a66597, MBW, MBW | CURPIPE, CFIFOSEL);
 471        r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 472
 473        tmp = r8a66597_read(r8a66597, CFIFOCTR);
 474        if ((tmp & FRDY) == 0) {
 475                printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 476                return -1;
 477        }
 478
 479        rcv_len = tmp & DTLN;
 480        dev->act_len += rcv_len;
 481
 482        r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 483
 484        if (buffer) {
 485                if (rcv_len == 0)
 486                        r8a66597_write(r8a66597, BCLR, DCPCTR);
 487                else
 488                        r8a66597_read_fifo(r8a66597, CFIFO, buffer, rcv_len);
 489        }
 490
 491        return 0;
 492}
 493
 494static int send_status_packet(struct r8a66597 *r8a66597,
 495                               unsigned long pipe)
 496{
 497        r8a66597_bset(r8a66597, SQSET, DCPCTR);
 498        r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 499
 500        if (usb_pipein(pipe)) {
 501                r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
 502                r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
 503                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 504                r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
 505                r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
 506        } else {
 507                r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 508                r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 509                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 510                r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 511        }
 512        r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 513
 514        while (!(r8a66597_read(r8a66597, BEMPSTS) & 0x0001))
 515                if (ctrlc())
 516                        return -1;
 517
 518        return 0;
 519}
 520
 521static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port)
 522{
 523        int count = R8A66597_MAX_SAMPLING;
 524        unsigned short syssts, old_syssts;
 525
 526        R8A66597_DPRINT("%s\n", __func__);
 527
 528        old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 529        while (count > 0) {
 530                mdelay(R8A66597_RH_POLL_TIME);
 531
 532                syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 533                if (syssts == old_syssts) {
 534                        count--;
 535                } else {
 536                        count = R8A66597_MAX_SAMPLING;
 537                        old_syssts = syssts;
 538                }
 539        }
 540}
 541
 542static void r8a66597_bus_reset(struct r8a66597 *r8a66597, int port)
 543{
 544        mdelay(10);
 545        r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port));
 546        mdelay(50);
 547        r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, get_dvstctr_reg(port));
 548        mdelay(50);
 549}
 550
 551static int check_usb_device_connecting(struct r8a66597 *r8a66597)
 552{
 553        int timeout = 10000;    /* 100usec * 10000 = 1sec */
 554        int i;
 555
 556        for (i = 0; i < 5; i++) {
 557                /* check a usb cable connect */
 558                while (!(r8a66597_read(r8a66597, INTSTS1) & ATTCH)) {
 559                        if (timeout-- < 0) {
 560                                printf("%s timeout.\n", __func__);
 561                                return -1;
 562                        }
 563                        udelay(100);
 564                }
 565
 566                /* check a data line */
 567                r8a66597_check_syssts(r8a66597, 0);
 568
 569                r8a66597_bus_reset(r8a66597, 0);
 570                r8a66597->speed = get_rh_usb_speed(r8a66597, 0);
 571
 572                if (!(r8a66597_read(r8a66597, INTSTS1) & DTCH)) {
 573                        r8a66597->port_change = USB_PORT_STAT_C_CONNECTION;
 574                        r8a66597->port_status = USB_PORT_STAT_CONNECTION |
 575                                                USB_PORT_STAT_ENABLE;
 576                        return 0;       /* success */
 577                }
 578
 579                R8A66597_DPRINT("USB device has detached. retry = %d\n", i);
 580                r8a66597_write(r8a66597, ~DTCH, INTSTS1);
 581        }
 582
 583        return -1;      /* fail */
 584}
 585
 586/*-------------------------------------------------------------------------*
 587 * Virtual Root Hub
 588 *-------------------------------------------------------------------------*/
 589
 590#include <usbroothubdes.h>
 591
 592static int r8a66597_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
 593                        void *buffer, int transfer_len, struct devrequest *cmd)
 594{
 595        struct r8a66597 *r8a66597 = &gr8a66597;
 596        int leni = transfer_len;
 597        int len = 0;
 598        int stat = 0;
 599        __u16 bmRType_bReq;
 600        __u16 wValue;
 601        __u16 wLength;
 602        unsigned char data[32];
 603
 604        R8A66597_DPRINT("%s\n", __func__);
 605
 606        if (usb_pipeint(pipe)) {
 607                printf("Root-Hub submit IRQ: NOT implemented");
 608                return 0;
 609        }
 610
 611        bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
 612        wValue        = cpu_to_le16 (cmd->value);
 613        wLength       = cpu_to_le16 (cmd->length);
 614
 615        switch (bmRType_bReq) {
 616        case RH_GET_STATUS:
 617                *(__u16 *)buffer = cpu_to_le16(1);
 618                len = 2;
 619                break;
 620        case RH_GET_STATUS | RH_INTERFACE:
 621                *(__u16 *)buffer = cpu_to_le16(0);
 622                len = 2;
 623                break;
 624        case RH_GET_STATUS | RH_ENDPOINT:
 625                *(__u16 *)buffer = cpu_to_le16(0);
 626                len = 2;
 627                break;
 628        case RH_GET_STATUS | RH_CLASS:
 629                *(__u32 *)buffer = cpu_to_le32(0);
 630                len = 4;
 631                break;
 632        case RH_GET_STATUS | RH_OTHER | RH_CLASS:
 633                *(__u32 *)buffer = cpu_to_le32(r8a66597->port_status |
 634                                                (r8a66597->port_change << 16));
 635                len = 4;
 636                break;
 637        case RH_CLEAR_FEATURE | RH_ENDPOINT:
 638        case RH_CLEAR_FEATURE | RH_CLASS:
 639                break;
 640
 641        case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
 642                switch (wValue) {
 643                case RH_C_PORT_CONNECTION:
 644                        r8a66597->port_change &= ~USB_PORT_STAT_C_CONNECTION;
 645                        break;
 646                }
 647                break;
 648
 649        case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
 650                switch (wValue) {
 651                case (RH_PORT_SUSPEND):
 652                        break;
 653                case (RH_PORT_RESET):
 654                        r8a66597_bus_reset(r8a66597, 0);
 655                        break;
 656                case (RH_PORT_POWER):
 657                        break;
 658                case (RH_PORT_ENABLE):
 659                        break;
 660                }
 661                break;
 662        case RH_SET_ADDRESS:
 663                gr8a66597.rh_devnum = wValue;
 664                break;
 665        case RH_GET_DESCRIPTOR:
 666                switch ((wValue & 0xff00) >> 8) {
 667                case (0x01): /* device descriptor */
 668                        len = min_t(unsigned int,
 669                                  leni,
 670                                  min_t(unsigned int,
 671                                      sizeof(root_hub_dev_des),
 672                                      wLength));
 673                        memcpy(buffer, root_hub_dev_des, len);
 674                        break;
 675                case (0x02): /* configuration descriptor */
 676                        len = min_t(unsigned int,
 677                                  leni,
 678                                  min_t(unsigned int,
 679                                      sizeof(root_hub_config_des),
 680                                      wLength));
 681                        memcpy(buffer, root_hub_config_des, len);
 682                        break;
 683                case (0x03): /* string descriptors */
 684                        if (wValue == 0x0300) {
 685                                len = min_t(unsigned int,
 686                                          leni,
 687                                          min_t(unsigned int,
 688                                              sizeof(root_hub_str_index0),
 689                                              wLength));
 690                                memcpy(buffer, root_hub_str_index0, len);
 691                        }
 692                        if (wValue == 0x0301) {
 693                                len = min_t(unsigned int,
 694                                          leni,
 695                                          min_t(unsigned int,
 696                                              sizeof(root_hub_str_index1),
 697                                              wLength));
 698                                memcpy(buffer, root_hub_str_index1, len);
 699                        }
 700                        break;
 701                default:
 702                        stat = USB_ST_STALLED;
 703                }
 704                break;
 705
 706        case RH_GET_DESCRIPTOR | RH_CLASS:
 707        {
 708                __u32 temp = 0x00000001;
 709
 710                data[0] = 9;            /* min length; */
 711                data[1] = 0x29;
 712                data[2] = temp & RH_A_NDP;
 713                data[3] = 0;
 714                if (temp & RH_A_PSM)
 715                        data[3] |= 0x1;
 716                if (temp & RH_A_NOCP)
 717                        data[3] |= 0x10;
 718                else if (temp & RH_A_OCPM)
 719                        data[3] |= 0x8;
 720
 721                /* corresponds to data[4-7] */
 722                data[5] = (temp & RH_A_POTPGT) >> 24;
 723                data[7] = temp & RH_B_DR;
 724                if (data[2] < 7) {
 725                        data[8] = 0xff;
 726                } else {
 727                        data[0] += 2;
 728                        data[8] = (temp & RH_B_DR) >> 8;
 729                        data[10] = data[9] = 0xff;
 730                }
 731
 732                len = min_t(unsigned int, leni,
 733                            min_t(unsigned int, data[0], wLength));
 734                memcpy(buffer, data, len);
 735                break;
 736        }
 737
 738        case RH_GET_CONFIGURATION:
 739                *(__u8 *) buffer = 0x01;
 740                len = 1;
 741                break;
 742        case RH_SET_CONFIGURATION:
 743                break;
 744        default:
 745                R8A66597_DPRINT("unsupported root hub command");
 746                stat = USB_ST_STALLED;
 747        }
 748
 749        mdelay(1);
 750
 751        len = min_t(int, len, leni);
 752
 753        dev->act_len = len;
 754        dev->status = stat;
 755
 756        return stat;
 757}
 758
 759int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 760                    int transfer_len)
 761{
 762        struct r8a66597 *r8a66597 = &gr8a66597;
 763        int ret = 0;
 764
 765        R8A66597_DPRINT("%s\n", __func__);
 766        R8A66597_DPRINT("pipe = %08x, buffer = %p, len = %d, devnum = %d\n",
 767                        pipe, buffer, transfer_len, dev->devnum);
 768
 769        set_devadd(r8a66597, dev->devnum, dev, 0);
 770
 771        pipe_buffer_setting(r8a66597, dev, pipe);
 772
 773        dev->act_len = 0;
 774        while (dev->act_len < transfer_len && ret == 0) {
 775                if (ctrlc())
 776                        return -1;
 777
 778                if (usb_pipein(pipe))
 779                        ret = receive_bulk_packet(r8a66597, dev, pipe, buffer,
 780                                                        transfer_len);
 781                else
 782                        ret = send_bulk_packet(r8a66597, dev, pipe, buffer,
 783                                                        transfer_len);
 784        }
 785
 786        if (ret == 0)
 787                dev->status = 0;
 788
 789        return ret;
 790}
 791
 792int submit_control_msg(struct usb_device *dev, unsigned long pipe,
 793                       void *buffer, int transfer_len, struct devrequest *setup)
 794{
 795        struct r8a66597 *r8a66597 = &gr8a66597;
 796        u16 r8a66597_address = setup->request == USB_REQ_SET_ADDRESS ?
 797                                        0 : dev->devnum;
 798
 799        R8A66597_DPRINT("%s\n", __func__);
 800        if (usb_pipedevice(pipe) == r8a66597->rh_devnum)
 801                return r8a66597_submit_rh_msg(dev, pipe, buffer, transfer_len,
 802                                                setup);
 803
 804        R8A66597_DPRINT("%s: setup\n", __func__);
 805        set_devadd(r8a66597, r8a66597_address, dev, 0);
 806
 807        if (send_setup_packet(r8a66597, dev, setup) < 0) {
 808                printf("setup packet send error\n");
 809                return -1;
 810        }
 811
 812        dev->act_len = 0;
 813        if (usb_pipein(pipe))
 814                if (receive_control_packet(r8a66597, dev, buffer,
 815                                                transfer_len) < 0)
 816                        return -1;
 817
 818        if (send_status_packet(r8a66597, pipe) < 0)
 819                return -1;
 820
 821        dev->status = 0;
 822
 823        return 0;
 824}
 825
 826int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 827                        int transfer_len, int interval)
 828{
 829        /* no implement */
 830        R8A66597_DPRINT("%s\n", __func__);
 831        return 0;
 832}
 833
 834int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 835{
 836        struct r8a66597 *r8a66597 = &gr8a66597;
 837
 838        R8A66597_DPRINT("%s\n", __func__);
 839
 840        memset(r8a66597, 0, sizeof(*r8a66597));
 841        r8a66597->reg = CONFIG_R8A66597_BASE_ADDR;
 842
 843        disable_controller(r8a66597);
 844        mdelay(100);
 845
 846        enable_controller(r8a66597);
 847        r8a66597_port_power(r8a66597, 0 , 1);
 848
 849        /* check usb device */
 850        check_usb_device_connecting(r8a66597);
 851
 852        mdelay(50);
 853
 854        return 0;
 855}
 856
 857int usb_lowlevel_stop(int index)
 858{
 859        disable_controller(&gr8a66597);
 860
 861        return 0;
 862}
 863