git.oblomov.eu Git - linux-2.6/blob - drivers/usb/host/r8a66597-hcd.c

   1 /*
   2  * R8A66597 HCD (Host Controller Driver)
   3  *
   4  * Copyright (C) 2006-2007 Renesas Solutions Corp.
   5  * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
   6  * Portions Copyright (C) 2004-2005 David Brownell
   7  * Portions Copyright (C) 1999 Roman Weissgaerber
   8  *
   9  * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; version 2 of the License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23  *
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/kernel.h>
  28 #include <linux/sched.h>
  29 #include <linux/smp_lock.h>
  30 #include <linux/errno.h>
  31 #include <linux/init.h>
  32 #include <linux/timer.h>
  33 #include <linux/delay.h>
  34 #include <linux/list.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/usb.h>
  37 #include <linux/platform_device.h>
  38 #include <linux/io.h>
  39 #include <linux/irq.h>
  40
  41 #include "../core/hcd.h"
  42 #include "r8a66597.h"
  43
  44 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
  45 MODULE_LICENSE("GPL");
  46 MODULE_AUTHOR("Yoshihiro Shimoda");
  47 MODULE_ALIAS("platform:r8a66597_hcd");
  48
  49 #define DRIVER_VERSION  "10 Apr 2008"
  50
  51 static const char hcd_name[] = "r8a66597_hcd";
  52
  53 /* module parameters */
  54 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  55 static unsigned short clock = XTAL12;
  56 module_param(clock, ushort, 0644);
  57 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
  58                 "(default=0)");
  59 #endif
  60
  61 static unsigned short vif = LDRV;
  62 module_param(vif, ushort, 0644);
  63 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
  64
  65 static unsigned short endian;
  66 module_param(endian, ushort, 0644);
  67 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
  68
  69 static unsigned short irq_sense = INTL;
  70 module_param(irq_sense, ushort, 0644);
  71 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
  72                 "(default=32)");
  73
  74 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
  75 static int r8a66597_get_frame(struct usb_hcd *hcd);
  76
  77 /* this function must be called with interrupt disabled */
  78 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  79                             unsigned long reg)
  80 {
  81         u16 tmp;
  82
  83         tmp = r8a66597_read(r8a66597, INTENB0);
  84         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  85         r8a66597_bset(r8a66597, 1 << pipenum, reg);
  86         r8a66597_write(r8a66597, tmp, INTENB0);
  87 }
  88
  89 /* this function must be called with interrupt disabled */
  90 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  91                              unsigned long reg)
  92 {
  93         u16 tmp;
  94
  95         tmp = r8a66597_read(r8a66597, INTENB0);
  96         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  97         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
  98         r8a66597_write(r8a66597, tmp, INTENB0);
  99 }
 100
 101 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
 102                            u16 usbspd, u8 upphub, u8 hubport, int port)
 103 {
 104         u16 val;
 105         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
 106
 107         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
 108         r8a66597_write(r8a66597, val, devadd_reg);
 109 }
 110
 111 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
 112 {
 113         u16 tmp;
 114         int i = 0;
 115
 116 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 117         do {
 118                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
 119                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 120                 if (i++ > 1000) {
 121                         err("register access fail.");
 122                         return -ENXIO;
 123                 }
 124         } while ((tmp & SCKE) != SCKE);
 125         r8a66597_write(r8a66597, 0x04, 0x02);
 126 #else
 127         do {
 128                 r8a66597_write(r8a66597, USBE, SYSCFG0);
 129                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 130                 if (i++ > 1000) {
 131                         err("register access fail.");
 132                         return -ENXIO;
 133                 }
 134         } while ((tmp & USBE) != USBE);
 135         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 136         r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
 137
 138         i = 0;
 139         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 140         do {
 141                 msleep(1);
 142                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 143                 if (i++ > 500) {
 144                         err("register access fail.");
 145                         return -ENXIO;
 146                 }
 147         } while ((tmp & SCKE) != SCKE);
 148 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 149
 150         return 0;
 151 }
 152
 153 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 154 {
 155         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 156         udelay(1);
 157 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 158         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 159         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 160         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 161 #endif
 162 }
 163
 164 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 165 {
 166         u16 val;
 167
 168         val = port ? DRPD : DCFM | DRPD;
 169         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 170         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 171
 172         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 173         r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
 174         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 175 }
 176
 177 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 178 {
 179         u16 val, tmp;
 180
 181         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 182         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 183
 184         r8a66597_port_power(r8a66597, port, 0);
 185
 186         do {
 187                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 188                 udelay(640);
 189         } while (tmp == EDGESTS);
 190
 191         val = port ? DRPD : DCFM | DRPD;
 192         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 193         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 194 }
 195
 196 static int enable_controller(struct r8a66597 *r8a66597)
 197 {
 198         int ret, port;
 199
 200         ret = r8a66597_clock_enable(r8a66597);
 201         if (ret < 0)
 202                 return ret;
 203
 204         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 205         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 206
 207         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
 208         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
 209         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
 210         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 211
 212         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 213         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 214         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 215         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 216
 217         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
 218
 219         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 220                 r8a66597_enable_port(r8a66597, port);
 221
 222         return 0;
 223 }
 224
 225 static void disable_controller(struct r8a66597 *r8a66597)
 226 {
 227         int port;
 228
 229         r8a66597_write(r8a66597, 0, INTENB0);
 230         r8a66597_write(r8a66597, 0, INTSTS0);
 231
 232         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 233                 r8a66597_disable_port(r8a66597, port);
 234
 235         r8a66597_clock_disable(r8a66597);
 236 }
 237
 238 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
 239                                        struct usb_device *udev)
 240 {
 241         struct r8a66597_device *dev;
 242
 243         if (udev->parent && udev->parent->devnum != 1)
 244                 udev = udev->parent;
 245
 246         dev = dev_get_drvdata(&udev->dev);
 247         if (dev)
 248                 return dev->address;
 249         else
 250                 return 0;
 251 }
 252
 253 static int is_child_device(char *devpath)
 254 {
 255         return (devpath[2] ? 1 : 0);
 256 }
 257
 258 static int is_hub_limit(char *devpath)
 259 {
 260         return ((strlen(devpath) >= 4) ? 1 : 0);
 261 }
 262
 263 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
 264 {
 265         if (root_port) {
 266                 *root_port = (devpath[0] & 0x0F) - 1;
 267                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
 268                         err("illegal root port number");
 269         }
 270         if (hub_port)
 271                 *hub_port = devpath[2] & 0x0F;
 272 }
 273
 274 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
 275 {
 276         u16 usbspd = 0;
 277
 278         switch (speed) {
 279         case USB_SPEED_LOW:
 280                 usbspd = LSMODE;
 281                 break;
 282         case USB_SPEED_FULL:
 283                 usbspd = FSMODE;
 284                 break;
 285         case USB_SPEED_HIGH:
 286                 usbspd = HSMODE;
 287                 break;
 288         default:
 289                 err("unknown speed");
 290                 break;
 291         }
 292
 293         return usbspd;
 294 }
 295
 296 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
 297 {
 298         int idx;
 299
 300         idx = address / 32;
 301         r8a66597->child_connect_map[idx] |= 1 << (address % 32);
 302 }
 303
 304 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
 305 {
 306         int idx;
 307
 308         idx = address / 32;
 309         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
 310 }
 311
 312 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
 313 {
 314         u16 pipenum = pipe->info.pipenum;
 315         const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
 316         const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
 317         const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
 318
 319         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
 320                 dma_ch = R8A66597_PIPE_NO_DMA;
 321
 322         pipe->fifoaddr = fifoaddr[dma_ch];
 323         pipe->fifosel = fifosel[dma_ch];
 324         pipe->fifoctr = fifoctr[dma_ch];
 325
 326         if (pipenum == 0)
 327                 pipe->pipectr = DCPCTR;
 328         else
 329                 pipe->pipectr = get_pipectr_addr(pipenum);
 330
 331         if (check_bulk_or_isoc(pipenum)) {
 332                 pipe->pipetre = get_pipetre_addr(pipenum);
 333                 pipe->pipetrn = get_pipetrn_addr(pipenum);
 334         } else {
 335                 pipe->pipetre = 0;
 336                 pipe->pipetrn = 0;
 337         }
 338 }
 339
 340 static struct r8a66597_device *
 341 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
 342 {
 343         if (usb_pipedevice(urb->pipe) == 0)
 344                 return &r8a66597->device0;
 345
 346         return dev_get_drvdata(&urb->dev->dev);
 347 }
 348
 349 static int make_r8a66597_device(struct r8a66597 *r8a66597,
 350                                 struct urb *urb, u8 addr)
 351 {
 352         struct r8a66597_device *dev;
 353         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 354
 355         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
 356         if (dev == NULL)
 357                 return -ENOMEM;
 358
 359         dev_set_drvdata(&urb->dev->dev, dev);
 360         dev->udev = urb->dev;
 361         dev->address = addr;
 362         dev->usb_address = usb_address;
 363         dev->state = USB_STATE_ADDRESS;
 364         dev->ep_in_toggle = 0;
 365         dev->ep_out_toggle = 0;
 366         INIT_LIST_HEAD(&dev->device_list);
 367         list_add_tail(&dev->device_list, &r8a66597->child_device);
 368
 369         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
 370         if (!is_child_device(urb->dev->devpath))
 371                 r8a66597->root_hub[dev->root_port].dev = dev;
 372
 373         set_devadd_reg(r8a66597, dev->address,
 374                        get_r8a66597_usb_speed(urb->dev->speed),
 375                        get_parent_r8a66597_address(r8a66597, urb->dev),
 376                        dev->hub_port, dev->root_port);
 377
 378         return 0;
 379 }
 380
 381 /* this function must be called with interrupt disabled */
 382 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
 383 {
 384         u8 addr;        /* R8A66597's address */
 385         struct r8a66597_device *dev;
 386
 387         if (is_hub_limit(urb->dev->devpath)) {
 388                 err("Externel hub limit reached.");
 389                 return 0;
 390         }
 391
 392         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 393         if (dev && dev->state >= USB_STATE_ADDRESS)
 394                 return dev->address;
 395
 396         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
 397                 if (r8a66597->address_map & (1 << addr))
 398                         continue;
 399
 400                 dbg("alloc_address: r8a66597_addr=%d", addr);
 401                 r8a66597->address_map |= 1 << addr;
 402
 403                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
 404                         return 0;
 405
 406                 return addr;
 407         }
 408
 409         err("cannot communicate with a USB device more than 10.(%x)",
 410             r8a66597->address_map);
 411
 412         return 0;
 413 }
 414
 415 /* this function must be called with interrupt disabled */
 416 static void free_usb_address(struct r8a66597 *r8a66597,
 417                              struct r8a66597_device *dev)
 418 {
 419         int port;
 420
 421         if (!dev)
 422                 return;
 423
 424         dbg("free_addr: addr=%d", dev->address);
 425
 426         dev->state = USB_STATE_DEFAULT;
 427         r8a66597->address_map &= ~(1 << dev->address);
 428         dev->address = 0;
 429         dev_set_drvdata(&dev->udev->dev, NULL);
 430         list_del(&dev->device_list);
 431         kfree(dev);
 432
 433         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
 434                 if (r8a66597->root_hub[port].dev == dev) {
 435                         r8a66597->root_hub[port].dev = NULL;
 436                         break;
 437                 }
 438         }
 439 }
 440
 441 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 442                               u16 mask, u16 loop)
 443 {
 444         u16 tmp;
 445         int i = 0;
 446
 447         do {
 448                 tmp = r8a66597_read(r8a66597, reg);
 449                 if (i++ > 1000000) {
 450                         err("register%lx, loop %x is timeout", reg, loop);
 451                         break;
 452                 }
 453                 ndelay(1);
 454         } while ((tmp & mask) != loop);
 455 }
 456
 457 /* this function must be called with interrupt disabled */
 458 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 459 {
 460         u16 tmp;
 461
 462         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 463         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
 464                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 465         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
 466 }
 467
 468 /* this function must be called with interrupt disabled */
 469 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 470 {
 471         u16 tmp;
 472
 473         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 474         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
 475                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
 476         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 477         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
 478 }
 479
 480 /* this function must be called with interrupt disabled */
 481 static void clear_all_buffer(struct r8a66597 *r8a66597,
 482                              struct r8a66597_pipe *pipe)
 483 {
 484         u16 tmp;
 485
 486         if (!pipe || pipe->info.pipenum == 0)
 487                 return;
 488
 489         pipe_stop(r8a66597, pipe);
 490         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
 491         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 492         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 493         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 494         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
 495 }
 496
 497 /* this function must be called with interrupt disabled */
 498 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
 499                                  struct r8a66597_pipe *pipe, int toggle)
 500 {
 501         if (toggle)
 502                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
 503         else
 504                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
 505 }
 506
 507 /* this function must be called with interrupt disabled */
 508 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
 509 {
 510         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 511         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 512 }
 513
 514 /* this function must be called with interrupt disabled */
 515 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
 516                                          struct r8a66597_pipe *pipe)
 517 {
 518         cfifo_change(r8a66597, 0);
 519         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
 520         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
 521
 522         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
 523                       pipe->fifosel);
 524         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
 525 }
 526
 527 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
 528 {
 529         struct r8a66597_pipe *pipe = hep->hcpriv;
 530
 531         if (usb_pipeendpoint(urb->pipe) == 0)
 532                 return 0;
 533         else
 534                 return pipe->info.pipenum;
 535 }
 536
 537 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
 538 {
 539         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 540
 541         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
 542 }
 543
 544 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
 545                                           int urb_pipe)
 546 {
 547         if (!dev)
 548                 return NULL;
 549
 550         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
 551 }
 552
 553 /* this function must be called with interrupt disabled */
 554 static void pipe_toggle_set(struct r8a66597 *r8a66597,
 555                             struct r8a66597_pipe *pipe,
 556                             struct urb *urb, int set)
 557 {
 558         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 559         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 560         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 561
 562         if (!toggle)
 563                 return;
 564
 565         if (set)
 566                 *toggle |= 1 << endpoint;
 567         else
 568                 *toggle &= ~(1 << endpoint);
 569 }
 570
 571 /* this function must be called with interrupt disabled */
 572 static void pipe_toggle_save(struct r8a66597 *r8a66597,
 573                              struct r8a66597_pipe *pipe,
 574                              struct urb *urb)
 575 {
 576         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
 577                 pipe_toggle_set(r8a66597, pipe, urb, 1);
 578         else
 579                 pipe_toggle_set(r8a66597, pipe, urb, 0);
 580 }
 581
 582 /* this function must be called with interrupt disabled */
 583 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
 584                                 struct r8a66597_pipe *pipe,
 585                                 struct urb *urb)
 586 {
 587         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 588         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 589         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 590
 591         if (!toggle)
 592                 return;
 593
 594         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
 595 }
 596
 597 /* this function must be called with interrupt disabled */
 598 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 599                                 struct r8a66597_pipe_info *info)
 600 {
 601         u16 val = 0;
 602
 603         if (info->pipenum == 0)
 604                 return;
 605
 606         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 607         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 608         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
 609         if (!info->dir_in)
 610                 val |= R8A66597_DIR;
 611         if (info->type == R8A66597_BULK && info->dir_in)
 612                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
 613         val |= info->type | info->epnum;
 614         r8a66597_write(r8a66597, val, PIPECFG);
 615
 616         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
 617                        PIPEBUF);
 618         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
 619                        PIPEMAXP);
 620         r8a66597_write(r8a66597, info->interval, PIPEPERI);
 621 }
 622
 623 /* this function must be called with interrupt disabled */
 624 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 625 {
 626         struct r8a66597_pipe_info *info;
 627         struct urb *urb = td->urb;
 628
 629         if (td->pipenum > 0) {
 630                 info = &td->pipe->info;
 631                 cfifo_change(r8a66597, 0);
 632                 pipe_buffer_setting(r8a66597, info);
 633
 634                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 635                                    usb_pipeout(urb->pipe)) &&
 636                     !usb_pipecontrol(urb->pipe)) {
 637                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
 638                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
 639                         clear_all_buffer(r8a66597, td->pipe);
 640                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 641                                       usb_pipeout(urb->pipe), 1);
 642                 }
 643                 pipe_toggle_restore(r8a66597, td->pipe, urb);
 644         }
 645 }
 646
 647 /* this function must be called with interrupt disabled */
 648 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
 649                              struct usb_endpoint_descriptor *ep)
 650 {
 651         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 652
 653         memset(array, 0, sizeof(array));
 654         switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
 655         case USB_ENDPOINT_XFER_BULK:
 656                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 657                         array[i++] = 4;
 658                 else {
 659                         array[i++] = 3;
 660                         array[i++] = 5;
 661                 }
 662                 break;
 663         case USB_ENDPOINT_XFER_INT:
 664                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
 665                         array[i++] = 6;
 666                         array[i++] = 7;
 667                         array[i++] = 8;
 668                 } else
 669                         array[i++] = 9;
 670                 break;
 671         case USB_ENDPOINT_XFER_ISOC:
 672                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 673                         array[i++] = 2;
 674                 else
 675                         array[i++] = 1;
 676                 break;
 677         default:
 678                 err("Illegal type");
 679                 return 0;
 680         }
 681
 682         i = 1;
 683         min = array[0];
 684         while (array[i] != 0) {
 685                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
 686                         min = array[i];
 687                 i++;
 688         }
 689
 690         return min;
 691 }
 692
 693 static u16 get_r8a66597_type(__u8 type)
 694 {
 695         u16 r8a66597_type;
 696
 697         switch (type) {
 698         case USB_ENDPOINT_XFER_BULK:
 699                 r8a66597_type = R8A66597_BULK;
 700                 break;
 701         case USB_ENDPOINT_XFER_INT:
 702                 r8a66597_type = R8A66597_INT;
 703                 break;
 704         case USB_ENDPOINT_XFER_ISOC:
 705                 r8a66597_type = R8A66597_ISO;
 706                 break;
 707         default:
 708                 err("Illegal type");
 709                 r8a66597_type = 0x0000;
 710                 break;
 711         }
 712
 713         return r8a66597_type;
 714 }
 715
 716 static u16 get_bufnum(u16 pipenum)
 717 {
 718         u16 bufnum = 0;
 719
 720         if (pipenum == 0)
 721                 bufnum = 0;
 722         else if (check_bulk_or_isoc(pipenum))
 723                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
 724         else if (check_interrupt(pipenum))
 725                 bufnum = 4 + (pipenum - 6);
 726         else
 727                 err("Illegal pipenum (%d)", pipenum);
 728
 729         return bufnum;
 730 }
 731
 732 static u16 get_buf_bsize(u16 pipenum)
 733 {
 734         u16 buf_bsize = 0;
 735
 736         if (pipenum == 0)
 737                 buf_bsize = 3;
 738         else if (check_bulk_or_isoc(pipenum))
 739                 buf_bsize = R8A66597_BUF_BSIZE - 1;
 740         else if (check_interrupt(pipenum))
 741                 buf_bsize = 0;
 742         else
 743                 err("Illegal pipenum (%d)", pipenum);
 744
 745         return buf_bsize;
 746 }
 747
 748 /* this function must be called with interrupt disabled */
 749 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
 750                                      struct r8a66597_device *dev,
 751                                      struct r8a66597_pipe *pipe,
 752                                      struct urb *urb)
 753 {
 754 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 755         int i;
 756         struct r8a66597_pipe_info *info = &pipe->info;
 757
 758         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
 759                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
 760                         if ((r8a66597->dma_map & (1 << i)) != 0)
 761                                 continue;
 762
 763                         info("address %d, EndpointAddress 0x%02x use DMA FIFO",
 764                              usb_pipedevice(urb->pipe),
 765                              info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
 766                                             : info->epnum);
 767
 768                         r8a66597->dma_map |= 1 << i;
 769                         dev->dma_map |= 1 << i;
 770                         set_pipe_reg_addr(pipe, i);
 771
 772                         cfifo_change(r8a66597, 0);
 773                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
 774                                       MBW | CURPIPE, pipe->fifosel);
 775
 776                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
 777                                           pipe->info.pipenum);
 778                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
 779                         break;
 780                 }
 781         }
 782 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 783 }
 784
 785 /* this function must be called with interrupt disabled */
 786 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 787                                  struct usb_host_endpoint *hep,
 788                                  struct r8a66597_pipe_info *info)
 789 {
 790         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 791         struct r8a66597_pipe *pipe = hep->hcpriv;
 792
 793         dbg("enable_pipe:");
 794
 795         pipe->info = *info;
 796         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
 797         r8a66597->pipe_cnt[pipe->info.pipenum]++;
 798         dev->pipe_cnt[pipe->info.pipenum]++;
 799
 800         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 801 }
 802
 803 /* this function must be called with interrupt disabled */
 804 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 805 {
 806         struct r8a66597_td *td, *next;
 807         struct urb *urb;
 808         struct list_head *list = &r8a66597->pipe_queue[pipenum];
 809
 810         if (list_empty(list))
 811                 return;
 812
 813         list_for_each_entry_safe(td, next, list, queue) {
 814                 if (!td)
 815                         continue;
 816                 if (td->address != address)
 817                         continue;
 818
 819                 urb = td->urb;
 820                 list_del(&td->queue);
 821                 kfree(td);
 822
 823                 if (urb) {
 824                         usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
 825                                         urb);
 826
 827                         spin_unlock(&r8a66597->lock);
 828                         usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
 829                                         -ENODEV);
 830                         spin_lock(&r8a66597->lock);
 831                 }
 832                 break;
 833         }
 834 }
 835
 836 /* this function must be called with interrupt disabled */
 837 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
 838                                       struct r8a66597_device *dev)
 839 {
 840         int check_ep0 = 0;
 841         u16 pipenum;
 842
 843         if (!dev)
 844                 return;
 845
 846         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
 847                 if (!dev->pipe_cnt[pipenum])
 848                         continue;
 849
 850                 if (!check_ep0) {
 851                         check_ep0 = 1;
 852                         force_dequeue(r8a66597, 0, dev->address);
 853                 }
 854
 855                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
 856                 dev->pipe_cnt[pipenum] = 0;
 857                 force_dequeue(r8a66597, pipenum, dev->address);
 858         }
 859
 860         dbg("disable_pipe");
 861
 862         r8a66597->dma_map &= ~(dev->dma_map);
 863         dev->dma_map = 0;
 864 }
 865
 866 static u16 get_interval(struct urb *urb, __u8 interval)
 867 {
 868         u16 time = 1;
 869         int i;
 870
 871         if (urb->dev->speed == USB_SPEED_HIGH) {
 872                 if (interval > IITV)
 873                         time = IITV;
 874                 else
 875                         time = interval ? interval - 1 : 0;
 876         } else {
 877                 if (interval > 128) {
 878                         time = IITV;
 879                 } else {
 880                         /* calculate the nearest value for PIPEPERI */
 881                         for (i = 0; i < 7; i++) {
 882                                 if ((1 << i) < interval &&
 883                                     (1 << (i + 1) > interval))
 884                                         time = 1 << i;
 885                         }
 886                 }
 887         }
 888
 889         return time;
 890 }
 891
 892 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
 893 {
 894         __u8 i;
 895         unsigned long time = 1;
 896
 897         if (usb_pipeisoc(urb->pipe))
 898                 return 0;
 899
 900         if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
 901                 for (i = 0; i < (interval - 1); i++)
 902                         time *= 2;
 903                 time = time * 125 / 1000;       /* uSOF -> msec */
 904         } else {
 905                 time = interval;
 906         }
 907
 908         return time;
 909 }
 910
 911 /* this function must be called with interrupt disabled */
 912 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
 913                            struct usb_host_endpoint *hep,
 914                            struct usb_endpoint_descriptor *ep)
 915 {
 916         struct r8a66597_pipe_info info;
 917
 918         info.pipenum = get_empty_pipenum(r8a66597, ep);
 919         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
 920         info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 921         info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
 922         info.type = get_r8a66597_type(ep->bmAttributes
 923                                       & USB_ENDPOINT_XFERTYPE_MASK);
 924         info.bufnum = get_bufnum(info.pipenum);
 925         info.buf_bsize = get_buf_bsize(info.pipenum);
 926         if (info.type == R8A66597_BULK) {
 927                 info.interval = 0;
 928                 info.timer_interval = 0;
 929         } else {
 930                 info.interval = get_interval(urb, ep->bInterval);
 931                 info.timer_interval = get_timer_interval(urb, ep->bInterval);
 932         }
 933         if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 934                 info.dir_in = 1;
 935         else
 936                 info.dir_in = 0;
 937
 938         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
 939 }
 940
 941 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 942 {
 943         struct r8a66597_device *dev;
 944
 945         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 946         dev->state = USB_STATE_CONFIGURED;
 947 }
 948
 949 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
 950                             u16 pipenum)
 951 {
 952         if (pipenum == 0 && usb_pipeout(urb->pipe))
 953                 enable_irq_empty(r8a66597, pipenum);
 954         else
 955                 enable_irq_ready(r8a66597, pipenum);
 956
 957         if (!usb_pipeisoc(urb->pipe))
 958                 enable_irq_nrdy(r8a66597, pipenum);
 959 }
 960
 961 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 962 {
 963         disable_irq_ready(r8a66597, pipenum);
 964         disable_irq_nrdy(r8a66597, pipenum);
 965 }
 966
 967 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
 968 {
 969         mod_timer(&r8a66597->rh_timer,
 970                         jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
 971 }
 972
 973 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
 974                                         int connect)
 975 {
 976         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
 977
 978         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
 979         rh->scount = R8A66597_MAX_SAMPLING;
 980         if (connect)
 981                 rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
 982         else
 983                 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
 984         rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
 985
 986         r8a66597_root_hub_start_polling(r8a66597);
 987 }
 988
 989 /* this function must be called with interrupt disabled */
 990 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
 991                                         u16 syssts)
 992 {
 993         if (syssts == SE0) {
 994                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
 995                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 996                 return;
 997         }
 998
 999         if (syssts == FS_JSTS)
1000                 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1001         else if (syssts == LS_JSTS)
1002                 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1003
1004         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1005         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1006 }
1007
1008 /* this function must be called with interrupt disabled */
1009 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1010 {
1011         u16 speed = get_rh_usb_speed(r8a66597, port);
1012         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1013
1014         if (speed == HSMODE)
1015                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1016         else if (speed == LSMODE)
1017                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1018
1019         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1020         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1021 }
1022
1023 /* this function must be called with interrupt disabled */
1024 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1025 {
1026         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1027
1028         disable_r8a66597_pipe_all(r8a66597, dev);
1029         free_usb_address(r8a66597, dev);
1030
1031         start_root_hub_sampling(r8a66597, port, 0);
1032 }
1033
1034 /* this function must be called with interrupt disabled */
1035 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1036                                  struct r8a66597_td *td)
1037 {
1038         int i;
1039         __le16 *p = (__le16 *)td->urb->setup_packet;
1040         unsigned long setup_addr = USBREQ;
1041
1042         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1043                        DCPMAXP);
1044         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1045
1046         for (i = 0; i < 4; i++) {
1047                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1048                 setup_addr += 2;
1049         }
1050         r8a66597_write(r8a66597, SUREQ, DCPCTR);
1051 }
1052
1053 /* this function must be called with interrupt disabled */
1054 static void prepare_packet_read(struct r8a66597 *r8a66597,
1055                                 struct r8a66597_td *td)
1056 {
1057         struct urb *urb = td->urb;
1058
1059         if (usb_pipecontrol(urb->pipe)) {
1060                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1061                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1062                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1063                 if (urb->actual_length == 0) {
1064                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1065                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1066                 }
1067                 pipe_irq_disable(r8a66597, td->pipenum);
1068                 pipe_start(r8a66597, td->pipe);
1069                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1070         } else {
1071                 if (urb->actual_length == 0) {
1072                         pipe_irq_disable(r8a66597, td->pipenum);
1073                         pipe_setting(r8a66597, td);
1074                         pipe_stop(r8a66597, td->pipe);
1075                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1076
1077                         if (td->pipe->pipetre) {
1078                                 r8a66597_write(r8a66597, TRCLR,
1079                                                 td->pipe->pipetre);
1080                                 r8a66597_write(r8a66597,
1081                                                 DIV_ROUND_UP
1082                                                   (urb->transfer_buffer_length,
1083                                                    td->maxpacket),
1084                                                 td->pipe->pipetrn);
1085                                 r8a66597_bset(r8a66597, TRENB,
1086                                                 td->pipe->pipetre);
1087                         }
1088
1089                         pipe_start(r8a66597, td->pipe);
1090                         pipe_irq_enable(r8a66597, urb, td->pipenum);
1091                 }
1092         }
1093 }
1094
1095 /* this function must be called with interrupt disabled */
1096 static void prepare_packet_write(struct r8a66597 *r8a66597,
1097                                  struct r8a66597_td *td)
1098 {
1099         u16 tmp;
1100         struct urb *urb = td->urb;
1101
1102         if (usb_pipecontrol(urb->pipe)) {
1103                 pipe_stop(r8a66597, td->pipe);
1104                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1105                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1106                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1107                 if (urb->actual_length == 0) {
1108                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1109                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1110                 }
1111         } else {
1112                 if (urb->actual_length == 0)
1113                         pipe_setting(r8a66597, td);
1114                 if (td->pipe->pipetre)
1115                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1116         }
1117         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1118
1119         fifo_change_from_pipe(r8a66597, td->pipe);
1120         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1121         if (unlikely((tmp & FRDY) == 0))
1122                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1123         else
1124                 packet_write(r8a66597, td->pipenum);
1125         pipe_start(r8a66597, td->pipe);
1126 }
1127
1128 /* this function must be called with interrupt disabled */
1129 static void prepare_status_packet(struct r8a66597 *r8a66597,
1130                                   struct r8a66597_td *td)
1131 {
1132         struct urb *urb = td->urb;
1133
1134         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1135         pipe_stop(r8a66597, td->pipe);
1136
1137         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1138                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1139                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1140                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1141                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1142                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1143                 enable_irq_empty(r8a66597, 0);
1144         } else {
1145                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1146                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1147                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1148                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1149                 enable_irq_ready(r8a66597, 0);
1150         }
1151         enable_irq_nrdy(r8a66597, 0);
1152         pipe_start(r8a66597, td->pipe);
1153 }
1154
1155 static int is_set_address(unsigned char *setup_packet)
1156 {
1157         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1158                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1159                 return 1;
1160         else
1161                 return 0;
1162 }
1163
1164 /* this function must be called with interrupt disabled */
1165 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1166 {
1167         BUG_ON(!td);
1168
1169         switch (td->type) {
1170         case USB_PID_SETUP:
1171                 if (is_set_address(td->urb->setup_packet)) {
1172                         td->set_address = 1;
1173                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1174                                                                      td->urb);
1175                         if (td->urb->setup_packet[2] == 0)
1176                                 return -EPIPE;
1177                 }
1178                 prepare_setup_packet(r8a66597, td);
1179                 break;
1180         case USB_PID_IN:
1181                 prepare_packet_read(r8a66597, td);
1182                 break;
1183         case USB_PID_OUT:
1184                 prepare_packet_write(r8a66597, td);
1185                 break;
1186         case USB_PID_ACK:
1187                 prepare_status_packet(r8a66597, td);
1188                 break;
1189         default:
1190                 err("invalid type.");
1191                 break;
1192         }
1193
1194         return 0;
1195 }
1196
1197 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1198 {
1199         if (usb_pipeisoc(urb->pipe)) {
1200                 if (urb->number_of_packets == td->iso_cnt)
1201                         return 1;
1202         }
1203
1204         /* control or bulk or interrupt */
1205         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1206             (td->short_packet) || (td->zero_packet))
1207                 return 1;
1208
1209         return 0;
1210 }
1211
1212 /* this function must be called with interrupt disabled */
1213 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1214 {
1215         unsigned long time;
1216
1217         BUG_ON(!td);
1218
1219         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1220             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1221                 r8a66597->timeout_map |= 1 << td->pipenum;
1222                 switch (usb_pipetype(td->urb->pipe)) {
1223                 case PIPE_INTERRUPT:
1224                 case PIPE_ISOCHRONOUS:
1225                         time = 30;
1226                         break;
1227                 default:
1228                         time = 300;
1229                         break;
1230                 }
1231
1232                 mod_timer(&r8a66597->td_timer[td->pipenum],
1233                           jiffies + msecs_to_jiffies(time));
1234         }
1235 }
1236
1237 /* this function must be called with interrupt disabled */
1238 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1239                 u16 pipenum, struct urb *urb, int status)
1240 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1241 {
1242         int restart = 0;
1243         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1244
1245         r8a66597->timeout_map &= ~(1 << pipenum);
1246
1247         if (likely(td)) {
1248                 if (td->set_address && (status != 0 || urb->unlinked))
1249                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1250
1251                 pipe_toggle_save(r8a66597, td->pipe, urb);
1252                 list_del(&td->queue);
1253                 kfree(td);
1254         }
1255
1256         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1257                 restart = 1;
1258
1259         if (likely(urb)) {
1260                 if (usb_pipeisoc(urb->pipe))
1261                         urb->start_frame = r8a66597_get_frame(hcd);
1262
1263                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1264                 spin_unlock(&r8a66597->lock);
1265                 usb_hcd_giveback_urb(hcd, urb, status);
1266                 spin_lock(&r8a66597->lock);
1267         }
1268
1269         if (restart) {
1270                 td = r8a66597_get_td(r8a66597, pipenum);
1271                 if (unlikely(!td))
1272                         return;
1273
1274                 start_transfer(r8a66597, td);
1275                 set_td_timer(r8a66597, td);
1276         }
1277 }
1278
1279 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1280 {
1281         u16 tmp;
1282         int rcv_len, bufsize, urb_len, size;
1283         u16 *buf;
1284         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1285         struct urb *urb;
1286         int finish = 0;
1287         int status = 0;
1288
1289         if (unlikely(!td))
1290                 return;
1291         urb = td->urb;
1292
1293         fifo_change_from_pipe(r8a66597, td->pipe);
1294         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1295         if (unlikely((tmp & FRDY) == 0)) {
1296                 pipe_stop(r8a66597, td->pipe);
1297                 pipe_irq_disable(r8a66597, pipenum);
1298                 err("in fifo not ready (%d)", pipenum);
1299                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1300                 return;
1301         }
1302
1303         /* prepare parameters */
1304         rcv_len = tmp & DTLN;
1305         if (usb_pipeisoc(urb->pipe)) {
1306                 buf = (u16 *)(urb->transfer_buffer +
1307                                 urb->iso_frame_desc[td->iso_cnt].offset);
1308                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1309         } else {
1310                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1311                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1312         }
1313         bufsize = min(urb_len, (int) td->maxpacket);
1314         if (rcv_len <= bufsize) {
1315                 size = rcv_len;
1316         } else {
1317                 size = bufsize;
1318                 status = -EOVERFLOW;
1319                 finish = 1;
1320         }
1321
1322         /* update parameters */
1323         urb->actual_length += size;
1324         if (rcv_len == 0)
1325                 td->zero_packet = 1;
1326         if (rcv_len < bufsize) {
1327                 td->short_packet = 1;
1328         }
1329         if (usb_pipeisoc(urb->pipe)) {
1330                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1331                 urb->iso_frame_desc[td->iso_cnt].status = status;
1332                 td->iso_cnt++;
1333                 finish = 0;
1334         }
1335
1336         /* check transfer finish */
1337         if (finish || check_transfer_finish(td, urb)) {
1338                 pipe_stop(r8a66597, td->pipe);
1339                 pipe_irq_disable(r8a66597, pipenum);
1340                 finish = 1;
1341         }
1342
1343         /* read fifo */
1344         if (urb->transfer_buffer) {
1345                 if (size == 0)
1346                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1347                 else
1348                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1349                                            buf, size);
1350         }
1351
1352         if (finish && pipenum != 0)
1353                 finish_request(r8a66597, td, pipenum, urb, status);
1354 }
1355
1356 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1357 {
1358         u16 tmp;
1359         int bufsize, size;
1360         u16 *buf;
1361         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1362         struct urb *urb;
1363
1364         if (unlikely(!td))
1365                 return;
1366         urb = td->urb;
1367
1368         fifo_change_from_pipe(r8a66597, td->pipe);
1369         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1370         if (unlikely((tmp & FRDY) == 0)) {
1371                 pipe_stop(r8a66597, td->pipe);
1372                 pipe_irq_disable(r8a66597, pipenum);
1373                 err("out write fifo not ready. (%d)", pipenum);
1374                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1375                 return;
1376         }
1377
1378         /* prepare parameters */
1379         bufsize = td->maxpacket;
1380         if (usb_pipeisoc(urb->pipe)) {
1381                 buf = (u16 *)(urb->transfer_buffer +
1382                                 urb->iso_frame_desc[td->iso_cnt].offset);
1383                 size = min(bufsize,
1384                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1385         } else {
1386                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1387                 size = min((int)bufsize,
1388                            urb->transfer_buffer_length - urb->actual_length);
1389         }
1390
1391         /* write fifo */
1392         if (pipenum > 0)
1393                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1394         if (urb->transfer_buffer) {
1395                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1396                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1397                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1398         }
1399
1400         /* update parameters */
1401         urb->actual_length += size;
1402         if (usb_pipeisoc(urb->pipe)) {
1403                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1404                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1405                 td->iso_cnt++;
1406         }
1407
1408         /* check transfer finish */
1409         if (check_transfer_finish(td, urb)) {
1410                 disable_irq_ready(r8a66597, pipenum);
1411                 enable_irq_empty(r8a66597, pipenum);
1412                 if (!usb_pipeisoc(urb->pipe))
1413                         enable_irq_nrdy(r8a66597, pipenum);
1414         } else
1415                 pipe_irq_enable(r8a66597, urb, pipenum);
1416 }
1417
1418
1419 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1420 {
1421         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1422         struct urb *urb;
1423         u8 finish = 0;
1424
1425         if (unlikely(!td))
1426                 return;
1427         urb = td->urb;
1428
1429         switch (td->type) {
1430         case USB_PID_IN:
1431         case USB_PID_OUT:
1432                 if (check_transfer_finish(td, urb))
1433                         td->type = USB_PID_ACK;
1434                 break;
1435         case USB_PID_SETUP:
1436                 if (urb->transfer_buffer_length == urb->actual_length)
1437                         td->type = USB_PID_ACK;
1438                 else if (usb_pipeout(urb->pipe))
1439                         td->type = USB_PID_OUT;
1440                 else
1441                         td->type = USB_PID_IN;
1442                 break;
1443         case USB_PID_ACK:
1444                 finish = 1;
1445                 break;
1446         }
1447
1448         if (finish || status != 0 || urb->unlinked)
1449                 finish_request(r8a66597, td, 0, urb, status);
1450         else
1451                 start_transfer(r8a66597, td);
1452 }
1453
1454 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1455 {
1456         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1457
1458         if (td) {
1459                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1460
1461                 if (pid == PID_NAK)
1462                         return -ECONNRESET;
1463                 else
1464                         return -EPIPE;
1465         }
1466         return 0;
1467 }
1468
1469 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1470 {
1471         u16 check;
1472         u16 pipenum;
1473         u16 mask;
1474         struct r8a66597_td *td;
1475
1476         mask = r8a66597_read(r8a66597, BRDYSTS)
1477                & r8a66597_read(r8a66597, BRDYENB);
1478         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1479         if (mask & BRDY0) {
1480                 td = r8a66597_get_td(r8a66597, 0);
1481                 if (td && td->type == USB_PID_IN)
1482                         packet_read(r8a66597, 0);
1483                 else
1484                         pipe_irq_disable(r8a66597, 0);
1485                 check_next_phase(r8a66597, 0);
1486         }
1487
1488         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1489                 check = 1 << pipenum;
1490                 if (mask & check) {
1491                         td = r8a66597_get_td(r8a66597, pipenum);
1492                         if (unlikely(!td))
1493                                 continue;
1494
1495                         if (td->type == USB_PID_IN)
1496                                 packet_read(r8a66597, pipenum);
1497                         else if (td->type == USB_PID_OUT)
1498                                 packet_write(r8a66597, pipenum);
1499                 }
1500         }
1501 }
1502
1503 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1504 {
1505         u16 tmp;
1506         u16 check;
1507         u16 pipenum;
1508         u16 mask;
1509         struct r8a66597_td *td;
1510
1511         mask = r8a66597_read(r8a66597, BEMPSTS)
1512                & r8a66597_read(r8a66597, BEMPENB);
1513         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1514         if (mask & BEMP0) {
1515                 cfifo_change(r8a66597, 0);
1516                 td = r8a66597_get_td(r8a66597, 0);
1517                 if (td && td->type != USB_PID_OUT)
1518                         disable_irq_empty(r8a66597, 0);
1519                 check_next_phase(r8a66597, 0);
1520         }
1521
1522         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1523                 check = 1 << pipenum;
1524                 if (mask &  check) {
1525                         struct r8a66597_td *td;
1526                         td = r8a66597_get_td(r8a66597, pipenum);
1527                         if (unlikely(!td))
1528                                 continue;
1529
1530                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1531                         if ((tmp & INBUFM) == 0) {
1532                                 disable_irq_empty(r8a66597, pipenum);
1533                                 pipe_irq_disable(r8a66597, pipenum);
1534                                 finish_request(r8a66597, td, pipenum, td->urb,
1535                                                 0);
1536                         }
1537                 }
1538         }
1539 }
1540
1541 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1542 {
1543         u16 check;
1544         u16 pipenum;
1545         u16 mask;
1546         int status;
1547
1548         mask = r8a66597_read(r8a66597, NRDYSTS)
1549                & r8a66597_read(r8a66597, NRDYENB);
1550         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1551         if (mask & NRDY0) {
1552                 cfifo_change(r8a66597, 0);
1553                 status = get_urb_error(r8a66597, 0);
1554                 pipe_irq_disable(r8a66597, 0);
1555                 check_next_phase(r8a66597, status);
1556         }
1557
1558         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1559                 check = 1 << pipenum;
1560                 if (mask & check) {
1561                         struct r8a66597_td *td;
1562                         td = r8a66597_get_td(r8a66597, pipenum);
1563                         if (unlikely(!td))
1564                                 continue;
1565
1566                         status = get_urb_error(r8a66597, pipenum);
1567                         pipe_irq_disable(r8a66597, pipenum);
1568                         pipe_stop(r8a66597, td->pipe);
1569                         finish_request(r8a66597, td, pipenum, td->urb, status);
1570                 }
1571         }
1572 }
1573
1574 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1575 {
1576         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1577         u16 intsts0, intsts1, intsts2;
1578         u16 intenb0, intenb1, intenb2;
1579         u16 mask0, mask1, mask2;
1580         int status;
1581
1582         spin_lock(&r8a66597->lock);
1583
1584         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1585         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1586         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1587         intenb0 = r8a66597_read(r8a66597, INTENB0);
1588         intenb1 = r8a66597_read(r8a66597, INTENB1);
1589         intenb2 = r8a66597_read(r8a66597, INTENB2);
1590
1591         mask2 = intsts2 & intenb2;
1592         mask1 = intsts1 & intenb1;
1593         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1594         if (mask2) {
1595                 if (mask2 & ATTCH) {
1596                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1597                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1598
1599                         /* start usb bus sampling */
1600                         start_root_hub_sampling(r8a66597, 1, 1);
1601                 }
1602                 if (mask2 & DTCH) {
1603                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1604                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1605                         r8a66597_usb_disconnect(r8a66597, 1);
1606                 }
1607         }
1608
1609         if (mask1) {
1610                 if (mask1 & ATTCH) {
1611                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1612                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1613
1614                         /* start usb bus sampling */
1615                         start_root_hub_sampling(r8a66597, 0, 1);
1616                 }
1617                 if (mask1 & DTCH) {
1618                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1619                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1620                         r8a66597_usb_disconnect(r8a66597, 0);
1621                 }
1622                 if (mask1 & SIGN) {
1623                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1624                         status = get_urb_error(r8a66597, 0);
1625                         check_next_phase(r8a66597, status);
1626                 }
1627                 if (mask1 & SACK) {
1628                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1629                         check_next_phase(r8a66597, 0);
1630                 }
1631         }
1632         if (mask0) {
1633                 if (mask0 & BRDY)
1634                         irq_pipe_ready(r8a66597);
1635                 if (mask0 & BEMP)
1636                         irq_pipe_empty(r8a66597);
1637                 if (mask0 & NRDY)
1638                         irq_pipe_nrdy(r8a66597);
1639         }
1640
1641         spin_unlock(&r8a66597->lock);
1642         return IRQ_HANDLED;
1643 }
1644
1645 /* this function must be called with interrupt disabled */
1646 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1647 {
1648         u16 tmp;
1649         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1650
1651         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1652                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1653
1654                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1655                 if ((tmp & USBRST) == USBRST) {
1656                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1657                                       dvstctr_reg);
1658                         r8a66597_root_hub_start_polling(r8a66597);
1659                 } else
1660                         r8a66597_usb_connect(r8a66597, port);
1661         }
1662
1663         if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1664                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1665                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1666         }
1667
1668         if (rh->scount > 0) {
1669                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1670                 if (tmp == rh->old_syssts) {
1671                         rh->scount--;
1672                         if (rh->scount == 0)
1673                                 r8a66597_check_syssts(r8a66597, port, tmp);
1674                         else
1675                                 r8a66597_root_hub_start_polling(r8a66597);
1676                 } else {
1677                         rh->scount = R8A66597_MAX_SAMPLING;
1678                         rh->old_syssts = tmp;
1679                         r8a66597_root_hub_start_polling(r8a66597);
1680                 }
1681         }
1682 }
1683
1684 static void r8a66597_interval_timer(unsigned long _r8a66597)
1685 {
1686         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1687         unsigned long flags;
1688         u16 pipenum;
1689         struct r8a66597_td *td;
1690
1691         spin_lock_irqsave(&r8a66597->lock, flags);
1692
1693         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1694                 if (!(r8a66597->interval_map & (1 << pipenum)))
1695                         continue;
1696                 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1697                         continue;
1698
1699                 td = r8a66597_get_td(r8a66597, pipenum);
1700                 if (td)
1701                         start_transfer(r8a66597, td);
1702         }
1703
1704         spin_unlock_irqrestore(&r8a66597->lock, flags);
1705 }
1706
1707 static void r8a66597_td_timer(unsigned long _r8a66597)
1708 {
1709         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1710         unsigned long flags;
1711         u16 pipenum;
1712         struct r8a66597_td *td, *new_td = NULL;
1713         struct r8a66597_pipe *pipe;
1714
1715         spin_lock_irqsave(&r8a66597->lock, flags);
1716         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1717                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1718                         continue;
1719                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1720                         continue;
1721
1722                 td = r8a66597_get_td(r8a66597, pipenum);
1723                 if (!td) {
1724                         r8a66597->timeout_map &= ~(1 << pipenum);
1725                         continue;
1726                 }
1727
1728                 if (td->urb->actual_length) {
1729                         set_td_timer(r8a66597, td);
1730                         break;
1731                 }
1732
1733                 pipe = td->pipe;
1734                 pipe_stop(r8a66597, pipe);
1735
1736                 new_td = td;
1737                 do {
1738                         list_move_tail(&new_td->queue,
1739                                        &r8a66597->pipe_queue[pipenum]);
1740                         new_td = r8a66597_get_td(r8a66597, pipenum);
1741                         if (!new_td) {
1742                                 new_td = td;
1743                                 break;
1744                         }
1745                 } while (td != new_td && td->address == new_td->address);
1746
1747                 start_transfer(r8a66597, new_td);
1748
1749                 if (td == new_td)
1750                         r8a66597->timeout_map &= ~(1 << pipenum);
1751                 else
1752                         set_td_timer(r8a66597, new_td);
1753                 break;
1754         }
1755         spin_unlock_irqrestore(&r8a66597->lock, flags);
1756 }
1757
1758 static void r8a66597_timer(unsigned long _r8a66597)
1759 {
1760         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1761         unsigned long flags;
1762
1763         spin_lock_irqsave(&r8a66597->lock, flags);
1764
1765         r8a66597_root_hub_control(r8a66597, 0);
1766         r8a66597_root_hub_control(r8a66597, 1);
1767
1768         spin_unlock_irqrestore(&r8a66597->lock, flags);
1769 }
1770
1771 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1772 {
1773         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1774
1775         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1776             (urb->dev->state == USB_STATE_CONFIGURED))
1777                 return 1;
1778         else
1779                 return 0;
1780 }
1781
1782 static int r8a66597_start(struct usb_hcd *hcd)
1783 {
1784         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1785
1786         hcd->state = HC_STATE_RUNNING;
1787         return enable_controller(r8a66597);
1788 }
1789
1790 static void r8a66597_stop(struct usb_hcd *hcd)
1791 {
1792         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1793
1794         disable_controller(r8a66597);
1795 }
1796
1797 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1798 {
1799         unsigned int usb_address = usb_pipedevice(urb->pipe);
1800         u16 root_port, hub_port;
1801
1802         if (usb_address == 0) {
1803                 get_port_number(urb->dev->devpath,
1804                                 &root_port, &hub_port);
1805                 set_devadd_reg(r8a66597, 0,
1806                                get_r8a66597_usb_speed(urb->dev->speed),
1807                                get_parent_r8a66597_address(r8a66597, urb->dev),
1808                                hub_port, root_port);
1809         }
1810 }
1811
1812 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1813                                             struct urb *urb,
1814                                             struct usb_host_endpoint *hep)
1815 {
1816         struct r8a66597_td *td;
1817         u16 pipenum;
1818
1819         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1820         if (td == NULL)
1821                 return NULL;
1822
1823         pipenum = r8a66597_get_pipenum(urb, hep);
1824         td->pipenum = pipenum;
1825         td->pipe = hep->hcpriv;
1826         td->urb = urb;
1827         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1828         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1829                                       !usb_pipein(urb->pipe));
1830         if (usb_pipecontrol(urb->pipe))
1831                 td->type = USB_PID_SETUP;
1832         else if (usb_pipein(urb->pipe))
1833                 td->type = USB_PID_IN;
1834         else
1835                 td->type = USB_PID_OUT;
1836         INIT_LIST_HEAD(&td->queue);
1837
1838         return td;
1839 }
1840
1841 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1842                                 struct urb *urb,
1843                                 gfp_t mem_flags)
1844 {
1845         struct usb_host_endpoint *hep = urb->ep;
1846         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1847         struct r8a66597_td *td = NULL;
1848         int ret, request = 0;
1849         unsigned long flags;
1850
1851         spin_lock_irqsave(&r8a66597->lock, flags);
1852         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1853                 ret = -ENODEV;
1854                 goto error_not_linked;
1855         }
1856
1857         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1858         if (ret)
1859                 goto error_not_linked;
1860
1861         if (!hep->hcpriv) {
1862                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1863                                 GFP_ATOMIC);
1864                 if (!hep->hcpriv) {
1865                         ret = -ENOMEM;
1866                         goto error;
1867                 }
1868                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1869                 if (usb_pipeendpoint(urb->pipe))
1870                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1871         }
1872
1873         if (unlikely(check_pipe_config(r8a66597, urb)))
1874                 init_pipe_config(r8a66597, urb);
1875
1876         set_address_zero(r8a66597, urb);
1877         td = r8a66597_make_td(r8a66597, urb, hep);
1878         if (td == NULL) {
1879                 ret = -ENOMEM;
1880                 goto error;
1881         }
1882         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1883                 request = 1;
1884         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1885         urb->hcpriv = td;
1886
1887         if (request) {
1888                 if (td->pipe->info.timer_interval) {
1889                         r8a66597->interval_map |= 1 << td->pipenum;
1890                         mod_timer(&r8a66597->interval_timer[td->pipenum],
1891                                   jiffies + msecs_to_jiffies(
1892                                         td->pipe->info.timer_interval));
1893                 } else {
1894                         ret = start_transfer(r8a66597, td);
1895                         if (ret < 0) {
1896                                 list_del(&td->queue);
1897                                 kfree(td);
1898                         }
1899                 }
1900         } else
1901                 set_td_timer(r8a66597, td);
1902
1903 error:
1904         if (ret)
1905                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1906 error_not_linked:
1907         spin_unlock_irqrestore(&r8a66597->lock, flags);
1908         return ret;
1909 }
1910
1911 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1912                 int status)
1913 {
1914         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1915         struct r8a66597_td *td;
1916         unsigned long flags;
1917         int rc;
1918
1919         spin_lock_irqsave(&r8a66597->lock, flags);
1920         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1921         if (rc)
1922                 goto done;
1923
1924         if (urb->hcpriv) {
1925                 td = urb->hcpriv;
1926                 pipe_stop(r8a66597, td->pipe);
1927                 pipe_irq_disable(r8a66597, td->pipenum);
1928                 disable_irq_empty(r8a66597, td->pipenum);
1929                 finish_request(r8a66597, td, td->pipenum, urb, status);
1930         }
1931  done:
1932         spin_unlock_irqrestore(&r8a66597->lock, flags);
1933         return rc;
1934 }
1935
1936 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1937                                       struct usb_host_endpoint *hep)
1938 {
1939         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1940         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1941         struct r8a66597_td *td;
1942         struct urb *urb = NULL;
1943         u16 pipenum;
1944         unsigned long flags;
1945
1946         if (pipe == NULL)
1947                 return;
1948         pipenum = pipe->info.pipenum;
1949
1950         if (pipenum == 0) {
1951                 kfree(hep->hcpriv);
1952                 hep->hcpriv = NULL;
1953                 return;
1954         }
1955
1956         spin_lock_irqsave(&r8a66597->lock, flags);
1957         pipe_stop(r8a66597, pipe);
1958         pipe_irq_disable(r8a66597, pipenum);
1959         disable_irq_empty(r8a66597, pipenum);
1960         td = r8a66597_get_td(r8a66597, pipenum);
1961         if (td)
1962                 urb = td->urb;
1963         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1964         kfree(hep->hcpriv);
1965         hep->hcpriv = NULL;
1966         spin_unlock_irqrestore(&r8a66597->lock, flags);
1967 }
1968
1969 static int r8a66597_get_frame(struct usb_hcd *hcd)
1970 {
1971         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1972         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1973 }
1974
1975 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1976 {
1977         int chix;
1978
1979         if (udev->state == USB_STATE_CONFIGURED &&
1980             udev->parent && udev->parent->devnum > 1 &&
1981             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1982                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1983
1984         for (chix = 0; chix < udev->maxchild; chix++) {
1985                 struct usb_device *childdev = udev->children[chix];
1986
1987                 if (childdev)
1988                         collect_usb_address_map(childdev, map);
1989         }
1990 }
1991
1992 /* this function must be called with interrupt disabled */
1993 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1994                                                    int addr)
1995 {
1996         struct r8a66597_device *dev;
1997         struct list_head *list = &r8a66597->child_device;
1998
1999         list_for_each_entry(dev, list, device_list) {
2000                 if (!dev)
2001                         continue;
2002                 if (dev->usb_address != addr)
2003                         continue;
2004
2005                 return dev;
2006         }
2007
2008         err("get_r8a66597_device fail.(%d)\n", addr);
2009         return NULL;
2010 }
2011
2012 static void update_usb_address_map(struct r8a66597 *r8a66597,
2013                                    struct usb_device *root_hub,
2014                                    unsigned long *map)
2015 {
2016         int i, j, addr;
2017         unsigned long diff;
2018         unsigned long flags;
2019
2020         for (i = 0; i < 4; i++) {
2021                 diff = r8a66597->child_connect_map[i] ^ map[i];
2022                 if (!diff)
2023                         continue;
2024
2025                 for (j = 0; j < 32; j++) {
2026                         if (!(diff & (1 << j)))
2027                                 continue;
2028
2029                         addr = i * 32 + j;
2030                         if (map[i] & (1 << j))
2031                                 set_child_connect_map(r8a66597, addr);
2032                         else {
2033                                 struct r8a66597_device *dev;
2034
2035                                 spin_lock_irqsave(&r8a66597->lock, flags);
2036                                 dev = get_r8a66597_device(r8a66597, addr);
2037                                 disable_r8a66597_pipe_all(r8a66597, dev);
2038                                 free_usb_address(r8a66597, dev);
2039                                 put_child_connect_map(r8a66597, addr);
2040                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
2041                         }
2042                 }
2043         }
2044 }
2045
2046 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2047                                         struct usb_hcd *hcd)
2048 {
2049         struct usb_bus *bus;
2050         unsigned long now_map[4];
2051
2052         memset(now_map, 0, sizeof(now_map));
2053
2054         list_for_each_entry(bus, &usb_bus_list, bus_list) {
2055                 if (!bus->root_hub)
2056                         continue;
2057
2058                 if (bus->busnum != hcd->self.busnum)
2059                         continue;
2060
2061                 collect_usb_address_map(bus->root_hub, now_map);
2062                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2063         }
2064 }
2065
2066 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2067 {
2068         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2069         unsigned long flags;
2070         int i;
2071
2072         r8a66597_check_detect_child(r8a66597, hcd);
2073
2074         spin_lock_irqsave(&r8a66597->lock, flags);
2075
2076         *buf = 0;       /* initialize (no change) */
2077
2078         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2079                 if (r8a66597->root_hub[i].port & 0xffff0000)
2080                         *buf |= 1 << (i + 1);
2081         }
2082
2083         spin_unlock_irqrestore(&r8a66597->lock, flags);
2084
2085         return (*buf != 0);
2086 }
2087
2088 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2089                                     struct usb_hub_descriptor *desc)
2090 {
2091         desc->bDescriptorType = 0x29;
2092         desc->bHubContrCurrent = 0;
2093         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2094         desc->bDescLength = 9;
2095         desc->bPwrOn2PwrGood = 0;
2096         desc->wHubCharacteristics = cpu_to_le16(0x0011);
2097         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2098         desc->bitmap[1] = ~0;
2099 }
2100
2101 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2102                                 u16 wIndex, char *buf, u16 wLength)
2103 {
2104         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2105         int ret;
2106         int port = (wIndex & 0x00FF) - 1;
2107         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2108         unsigned long flags;
2109
2110         ret = 0;
2111
2112         spin_lock_irqsave(&r8a66597->lock, flags);
2113         switch (typeReq) {
2114         case ClearHubFeature:
2115         case SetHubFeature:
2116                 switch (wValue) {
2117                 case C_HUB_OVER_CURRENT:
2118                 case C_HUB_LOCAL_POWER:
2119                         break;
2120                 default:
2121                         goto error;
2122                 }
2123                 break;
2124         case ClearPortFeature:
2125                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2126                         goto error;
2127                 if (wLength != 0)
2128                         goto error;
2129
2130                 switch (wValue) {
2131                 case USB_PORT_FEAT_ENABLE:
2132                         rh->port &= (1 << USB_PORT_FEAT_POWER);
2133                         break;
2134                 case USB_PORT_FEAT_SUSPEND:
2135                         break;
2136                 case USB_PORT_FEAT_POWER:
2137                         r8a66597_port_power(r8a66597, port, 0);
2138                         break;
2139                 case USB_PORT_FEAT_C_ENABLE:
2140                 case USB_PORT_FEAT_C_SUSPEND:
2141                 case USB_PORT_FEAT_C_CONNECTION:
2142                 case USB_PORT_FEAT_C_OVER_CURRENT:
2143                 case USB_PORT_FEAT_C_RESET:
2144                         break;
2145                 default:
2146                         goto error;
2147                 }
2148                 rh->port &= ~(1 << wValue);
2149                 break;
2150         case GetHubDescriptor:
2151                 r8a66597_hub_descriptor(r8a66597,
2152                                         (struct usb_hub_descriptor *)buf);
2153                 break;
2154         case GetHubStatus:
2155                 *buf = 0x00;
2156                 break;
2157         case GetPortStatus:
2158                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2159                         goto error;
2160                 *(__le32 *)buf = cpu_to_le32(rh->port);
2161                 break;
2162         case SetPortFeature:
2163                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2164                         goto error;
2165                 if (wLength != 0)
2166                         goto error;
2167
2168                 switch (wValue) {
2169                 case USB_PORT_FEAT_SUSPEND:
2170                         break;
2171                 case USB_PORT_FEAT_POWER:
2172                         r8a66597_port_power(r8a66597, port, 1);
2173                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2174                         break;
2175                 case USB_PORT_FEAT_RESET: {
2176                         struct r8a66597_device *dev = rh->dev;
2177
2178                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2179
2180                         disable_r8a66597_pipe_all(r8a66597, dev);
2181                         free_usb_address(r8a66597, dev);
2182
2183                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2184                                       get_dvstctr_reg(port));
2185                         mod_timer(&r8a66597->rh_timer,
2186                                   jiffies + msecs_to_jiffies(50));
2187                         }
2188                         break;
2189                 default:
2190                         goto error;
2191                 }
2192                 rh->port |= 1 << wValue;
2193                 break;
2194         default:
2195 error:
2196                 ret = -EPIPE;
2197                 break;
2198         }
2199
2200         spin_unlock_irqrestore(&r8a66597->lock, flags);
2201         return ret;
2202 }
2203
2204 static struct hc_driver r8a66597_hc_driver = {
2205         .description =          hcd_name,
2206         .hcd_priv_size =        sizeof(struct r8a66597),
2207         .irq =                  r8a66597_irq,
2208
2209         /*
2210          * generic hardware linkage
2211          */
2212         .flags =                HCD_USB2,
2213
2214         .start =                r8a66597_start,
2215         .stop =                 r8a66597_stop,
2216
2217         /*
2218          * managing i/o requests and associated device resources
2219          */
2220         .urb_enqueue =          r8a66597_urb_enqueue,
2221         .urb_dequeue =          r8a66597_urb_dequeue,
2222         .endpoint_disable =     r8a66597_endpoint_disable,
2223
2224         /*
2225          * periodic schedule support
2226          */
2227         .get_frame_number =     r8a66597_get_frame,
2228
2229         /*
2230          * root hub support
2231          */
2232         .hub_status_data =      r8a66597_hub_status_data,
2233         .hub_control =          r8a66597_hub_control,
2234 };
2235
2236 #if defined(CONFIG_PM)
2237 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2238 {
2239         return 0;
2240 }
2241
2242 static int r8a66597_resume(struct platform_device *pdev)
2243 {
2244         return 0;
2245 }
2246 #else   /* if defined(CONFIG_PM) */
2247 #define r8a66597_suspend        NULL
2248 #define r8a66597_resume         NULL
2249 #endif
2250
2251 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2252 {
2253         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2254         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2255
2256         del_timer_sync(&r8a66597->rh_timer);
2257         usb_remove_hcd(hcd);
2258         iounmap((void *)r8a66597->reg);
2259         usb_put_hcd(hcd);
2260         return 0;
2261 }
2262
2263 #define resource_len(r) (((r)->end - (r)->start) + 1)
2264 static int __init r8a66597_probe(struct platform_device *pdev)
2265 {
2266         struct resource *res = NULL;
2267         int irq = -1;
2268         void __iomem *reg = NULL;
2269         struct usb_hcd *hcd = NULL;
2270         struct r8a66597 *r8a66597;
2271         int ret = 0;
2272         int i;
2273         unsigned long irq_trigger;
2274
2275         if (pdev->dev.dma_mask) {
2276                 ret = -EINVAL;
2277                 err("dma not support");
2278                 goto clean_up;
2279         }
2280
2281         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2282                                            (char *)hcd_name);
2283         if (!res) {
2284                 ret = -ENODEV;
2285                 err("platform_get_resource_byname error.");
2286                 goto clean_up;
2287         }
2288
2289         irq = platform_get_irq(pdev, 0);
2290         if (irq < 0) {
2291                 ret = -ENODEV;
2292                 err("platform_get_irq error.");
2293                 goto clean_up;
2294         }
2295
2296         reg = ioremap(res->start, resource_len(res));
2297         if (reg == NULL) {
2298                 ret = -ENOMEM;
2299                 err("ioremap error.");
2300                 goto clean_up;
2301         }
2302
2303         /* initialize hcd */
2304         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2305         if (!hcd) {
2306                 ret = -ENOMEM;
2307                 err("Failed to create hcd");
2308                 goto clean_up;
2309         }
2310         r8a66597 = hcd_to_r8a66597(hcd);
2311         memset(r8a66597, 0, sizeof(struct r8a66597));
2312         dev_set_drvdata(&pdev->dev, r8a66597);
2313
2314         spin_lock_init(&r8a66597->lock);
2315         init_timer(&r8a66597->rh_timer);
2316         r8a66597->rh_timer.function = r8a66597_timer;
2317         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2318         r8a66597->reg = (unsigned long)reg;
2319
2320         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2321                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2322                 init_timer(&r8a66597->td_timer[i]);
2323                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2324                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2325                 setup_timer(&r8a66597->interval_timer[i],
2326                                 r8a66597_interval_timer,
2327                                 (unsigned long)r8a66597);
2328         }
2329         INIT_LIST_HEAD(&r8a66597->child_device);
2330
2331         hcd->rsrc_start = res->start;
2332         if (irq_sense == INTL)
2333                 irq_trigger = IRQF_TRIGGER_LOW;
2334         else
2335                 irq_trigger = IRQF_TRIGGER_FALLING;
2336         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2337         if (ret != 0) {
2338                 err("Failed to add hcd");
2339                 goto clean_up;
2340         }
2341
2342         return 0;
2343
2344 clean_up:
2345         if (reg)
2346                 iounmap(reg);
2347
2348         return ret;
2349 }
2350
2351 static struct platform_driver r8a66597_driver = {
2352         .probe =        r8a66597_probe,
2353         .remove =       r8a66597_remove,
2354         .suspend =      r8a66597_suspend,
2355         .resume =       r8a66597_resume,
2356         .driver         = {
2357                 .name = (char *) hcd_name,
2358                 .owner  = THIS_MODULE,
2359         },
2360 };
2361
2362 static int __init r8a66597_init(void)
2363 {
2364         if (usb_disabled())
2365                 return -ENODEV;
2366
2367         info("driver %s, %s", hcd_name, DRIVER_VERSION);
2368         return platform_driver_register(&r8a66597_driver);
2369 }
2370 module_init(r8a66597_init);
2371
2372 static void __exit r8a66597_cleanup(void)
2373 {
2374         platform_driver_unregister(&r8a66597_driver);
2375 }
2376 module_exit(r8a66597_cleanup);
2377