SAFE public projects git trees. - safe/jmp/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
  48 #define DRIVER_VERSION  "29 May 2007"
  49
  50 static const char hcd_name[] = "r8a66597_hcd";
  51
  52 /* module parameters */
  53 static unsigned short clock = XTAL12;
  54 module_param(clock, ushort, 0644);
  55 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
  56                 "(default=0)");
  57
  58 static unsigned short vif = LDRV;
  59 module_param(vif, ushort, 0644);
  60 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
  61
  62 static unsigned short endian;
  63 module_param(endian, ushort, 0644);
  64 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
  65
  66 static unsigned short irq_sense = INTL;
  67 module_param(irq_sense, ushort, 0644);
  68 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
  69                 "(default=32)");
  70
  71 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
  72 static int r8a66597_get_frame(struct usb_hcd *hcd);
  73
  74 /* this function must be called with interrupt disabled */
  75 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  76                             unsigned long reg)
  77 {
  78         u16 tmp;
  79
  80         tmp = r8a66597_read(r8a66597, INTENB0);
  81         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  82         r8a66597_bset(r8a66597, 1 << pipenum, reg);
  83         r8a66597_write(r8a66597, tmp, INTENB0);
  84 }
  85
  86 /* this function must be called with interrupt disabled */
  87 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  88                              unsigned long reg)
  89 {
  90         u16 tmp;
  91
  92         tmp = r8a66597_read(r8a66597, INTENB0);
  93         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  94         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
  95         r8a66597_write(r8a66597, tmp, INTENB0);
  96 }
  97
  98 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
  99                            u16 usbspd, u8 upphub, u8 hubport, int port)
 100 {
 101         u16 val;
 102         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
 103
 104         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
 105         r8a66597_write(r8a66597, val, devadd_reg);
 106 }
 107
 108 static int enable_controller(struct r8a66597 *r8a66597)
 109 {
 110         u16 tmp;
 111         int i = 0;
 112
 113         do {
 114                 r8a66597_write(r8a66597, USBE, SYSCFG0);
 115                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 116                 if (i++ > 1000) {
 117                         err("register access fail.");
 118                         return -ENXIO;
 119                 }
 120         } while ((tmp & USBE) != USBE);
 121         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 122         r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
 123
 124         i = 0;
 125         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 126         do {
 127                 msleep(1);
 128                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 129                 if (i++ > 500) {
 130                         err("register access fail.");
 131                         return -ENXIO;
 132                 }
 133         } while ((tmp & SCKE) != SCKE);
 134
 135         r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0);
 136         r8a66597_bset(r8a66597, DRPD, SYSCFG1);
 137
 138         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 139         r8a66597_bset(r8a66597, HSE, SYSCFG0);
 140         r8a66597_bset(r8a66597, HSE, SYSCFG1);
 141         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 142
 143         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
 144         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
 145         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
 146         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 147
 148         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG);
 149         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG);
 150
 151         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 152         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 153         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 154
 155         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 156
 157         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
 158         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
 159         r8a66597_bset(r8a66597, ATTCHE, INTENB1);
 160         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
 161         r8a66597_bset(r8a66597, ATTCHE, INTENB2);
 162
 163         return 0;
 164 }
 165
 166 static void disable_controller(struct r8a66597 *r8a66597)
 167 {
 168         u16 tmp;
 169
 170         r8a66597_write(r8a66597, 0, INTENB0);
 171         r8a66597_write(r8a66597, 0, INTENB1);
 172         r8a66597_write(r8a66597, 0, INTENB2);
 173         r8a66597_write(r8a66597, 0, INTSTS0);
 174         r8a66597_write(r8a66597, 0, INTSTS1);
 175         r8a66597_write(r8a66597, 0, INTSTS2);
 176
 177         r8a66597_port_power(r8a66597, 0, 0);
 178         r8a66597_port_power(r8a66597, 1, 0);
 179
 180         do {
 181                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 182                 udelay(640);
 183         } while (tmp == EDGESTS);
 184
 185         r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0);
 186         r8a66597_bclr(r8a66597, DRPD, SYSCFG1);
 187         r8a66597_bclr(r8a66597, HSE, SYSCFG0);
 188         r8a66597_bclr(r8a66597, HSE, SYSCFG1);
 189
 190         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 191         udelay(1);
 192         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 193         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 194         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 195 }
 196
 197 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
 198                                        struct usb_device *udev)
 199 {
 200         struct r8a66597_device *dev;
 201
 202         if (udev->parent && udev->parent->devnum != 1)
 203                 udev = udev->parent;
 204
 205         dev = dev_get_drvdata(&udev->dev);
 206         if (dev)
 207                 return dev->address;
 208         else
 209                 return 0;
 210 }
 211
 212 static int is_child_device(char *devpath)
 213 {
 214         return (devpath[2] ? 1 : 0);
 215 }
 216
 217 static int is_hub_limit(char *devpath)
 218 {
 219         return ((strlen(devpath) >= 4) ? 1 : 0);
 220 }
 221
 222 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
 223 {
 224         if (root_port) {
 225                 *root_port = (devpath[0] & 0x0F) - 1;
 226                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
 227                         err("illegal root port number");
 228         }
 229         if (hub_port)
 230                 *hub_port = devpath[2] & 0x0F;
 231 }
 232
 233 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
 234 {
 235         u16 usbspd = 0;
 236
 237         switch (speed) {
 238         case USB_SPEED_LOW:
 239                 usbspd = LSMODE;
 240                 break;
 241         case USB_SPEED_FULL:
 242                 usbspd = FSMODE;
 243                 break;
 244         case USB_SPEED_HIGH:
 245                 usbspd = HSMODE;
 246                 break;
 247         default:
 248                 err("unknown speed");
 249                 break;
 250         }
 251
 252         return usbspd;
 253 }
 254
 255 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
 256 {
 257         int idx;
 258
 259         idx = address / 32;
 260         r8a66597->child_connect_map[idx] |= 1 << (address % 32);
 261 }
 262
 263 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
 264 {
 265         int idx;
 266
 267         idx = address / 32;
 268         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
 269 }
 270
 271 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
 272 {
 273         u16 pipenum = pipe->info.pipenum;
 274         unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
 275         unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
 276         unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
 277
 278         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
 279                 dma_ch = R8A66597_PIPE_NO_DMA;
 280
 281         pipe->fifoaddr = fifoaddr[dma_ch];
 282         pipe->fifosel = fifosel[dma_ch];
 283         pipe->fifoctr = fifoctr[dma_ch];
 284
 285         if (pipenum == 0)
 286                 pipe->pipectr = DCPCTR;
 287         else
 288                 pipe->pipectr = get_pipectr_addr(pipenum);
 289
 290         if (check_bulk_or_isoc(pipenum)) {
 291                 pipe->pipetre = get_pipetre_addr(pipenum);
 292                 pipe->pipetrn = get_pipetrn_addr(pipenum);
 293         } else {
 294                 pipe->pipetre = 0;
 295                 pipe->pipetrn = 0;
 296         }
 297 }
 298
 299 static struct r8a66597_device *
 300 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
 301 {
 302         if (usb_pipedevice(urb->pipe) == 0)
 303                 return &r8a66597->device0;
 304
 305         return dev_get_drvdata(&urb->dev->dev);
 306 }
 307
 308 static int make_r8a66597_device(struct r8a66597 *r8a66597,
 309                                 struct urb *urb, u8 addr)
 310 {
 311         struct r8a66597_device *dev;
 312         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 313
 314         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
 315         if (dev == NULL)
 316                 return -ENOMEM;
 317
 318         dev_set_drvdata(&urb->dev->dev, dev);
 319         dev->udev = urb->dev;
 320         dev->address = addr;
 321         dev->usb_address = usb_address;
 322         dev->state = USB_STATE_ADDRESS;
 323         dev->ep_in_toggle = 0;
 324         dev->ep_out_toggle = 0;
 325         INIT_LIST_HEAD(&dev->device_list);
 326         list_add_tail(&dev->device_list, &r8a66597->child_device);
 327
 328         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
 329         if (!is_child_device(urb->dev->devpath))
 330                 r8a66597->root_hub[dev->root_port].dev = dev;
 331
 332         set_devadd_reg(r8a66597, dev->address,
 333                        get_r8a66597_usb_speed(urb->dev->speed),
 334                        get_parent_r8a66597_address(r8a66597, urb->dev),
 335                        dev->hub_port, dev->root_port);
 336
 337         return 0;
 338 }
 339
 340 /* this function must be called with interrupt disabled */
 341 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
 342 {
 343         u8 addr;        /* R8A66597's address */
 344         struct r8a66597_device *dev;
 345
 346         if (is_hub_limit(urb->dev->devpath)) {
 347                 err("Externel hub limit reached.");
 348                 return 0;
 349         }
 350
 351         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 352         if (dev && dev->state >= USB_STATE_ADDRESS)
 353                 return dev->address;
 354
 355         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
 356                 if (r8a66597->address_map & (1 << addr))
 357                         continue;
 358
 359                 dbg("alloc_address: r8a66597_addr=%d", addr);
 360                 r8a66597->address_map |= 1 << addr;
 361
 362                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
 363                         return 0;
 364
 365                 return addr;
 366         }
 367
 368         err("cannot communicate with a USB device more than 10.(%x)",
 369             r8a66597->address_map);
 370
 371         return 0;
 372 }
 373
 374 /* this function must be called with interrupt disabled */
 375 static void free_usb_address(struct r8a66597 *r8a66597,
 376                              struct r8a66597_device *dev)
 377 {
 378         int port;
 379
 380         if (!dev)
 381                 return;
 382
 383         dbg("free_addr: addr=%d", dev->address);
 384
 385         dev->state = USB_STATE_DEFAULT;
 386         r8a66597->address_map &= ~(1 << dev->address);
 387         dev->address = 0;
 388         dev_set_drvdata(&dev->udev->dev, NULL);
 389         list_del(&dev->device_list);
 390         kfree(dev);
 391
 392         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
 393                 if (r8a66597->root_hub[port].dev == dev) {
 394                         r8a66597->root_hub[port].dev = NULL;
 395                         break;
 396                 }
 397         }
 398 }
 399
 400 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 401                               u16 mask, u16 loop)
 402 {
 403         u16 tmp;
 404         int i = 0;
 405
 406         do {
 407                 tmp = r8a66597_read(r8a66597, reg);
 408                 if (i++ > 1000000) {
 409                         err("register%lx, loop %x is timeout", reg, loop);
 410                         break;
 411                 }
 412                 ndelay(1);
 413         } while ((tmp & mask) != loop);
 414 }
 415
 416 /* this function must be called with interrupt disabled */
 417 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 418 {
 419         u16 tmp;
 420
 421         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 422         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
 423                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 424         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
 425 }
 426
 427 /* this function must be called with interrupt disabled */
 428 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 429 {
 430         u16 tmp;
 431
 432         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 433         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
 434                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
 435         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 436         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
 437 }
 438
 439 /* this function must be called with interrupt disabled */
 440 static void clear_all_buffer(struct r8a66597 *r8a66597,
 441                              struct r8a66597_pipe *pipe)
 442 {
 443         u16 tmp;
 444
 445         if (!pipe || pipe->info.pipenum == 0)
 446                 return;
 447
 448         pipe_stop(r8a66597, pipe);
 449         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
 450         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 451         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 452         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 453         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
 454 }
 455
 456 /* this function must be called with interrupt disabled */
 457 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
 458                                  struct r8a66597_pipe *pipe, int toggle)
 459 {
 460         if (toggle)
 461                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
 462         else
 463                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
 464 }
 465
 466 /* this function must be called with interrupt disabled */
 467 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
 468 {
 469         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 470         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 471 }
 472
 473 /* this function must be called with interrupt disabled */
 474 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
 475                                          struct r8a66597_pipe *pipe)
 476 {
 477         cfifo_change(r8a66597, 0);
 478         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
 479         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
 480
 481         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
 482                       pipe->fifosel);
 483         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
 484 }
 485
 486 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
 487 {
 488         struct r8a66597_pipe *pipe = hep->hcpriv;
 489
 490         if (usb_pipeendpoint(urb->pipe) == 0)
 491                 return 0;
 492         else
 493                 return pipe->info.pipenum;
 494 }
 495
 496 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
 497 {
 498         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 499
 500         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
 501 }
 502
 503 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
 504                                           int urb_pipe)
 505 {
 506         if (!dev)
 507                 return NULL;
 508
 509         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
 510 }
 511
 512 /* this function must be called with interrupt disabled */
 513 static void pipe_toggle_set(struct r8a66597 *r8a66597,
 514                             struct r8a66597_pipe *pipe,
 515                             struct urb *urb, int set)
 516 {
 517         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 518         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 519         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 520
 521         if (!toggle)
 522                 return;
 523
 524         if (set)
 525                 *toggle |= 1 << endpoint;
 526         else
 527                 *toggle &= ~(1 << endpoint);
 528 }
 529
 530 /* this function must be called with interrupt disabled */
 531 static void pipe_toggle_save(struct r8a66597 *r8a66597,
 532                              struct r8a66597_pipe *pipe,
 533                              struct urb *urb)
 534 {
 535         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
 536                 pipe_toggle_set(r8a66597, pipe, urb, 1);
 537         else
 538                 pipe_toggle_set(r8a66597, pipe, urb, 0);
 539 }
 540
 541 /* this function must be called with interrupt disabled */
 542 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
 543                                 struct r8a66597_pipe *pipe,
 544                                 struct urb *urb)
 545 {
 546         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 547         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 548         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 549
 550         if (!toggle)
 551                 return;
 552
 553         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
 554 }
 555
 556 /* this function must be called with interrupt disabled */
 557 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 558                                 struct r8a66597_pipe_info *info)
 559 {
 560         u16 val = 0;
 561
 562         if (info->pipenum == 0)
 563                 return;
 564
 565         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 566         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 567         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
 568         if (!info->dir_in)
 569                 val |= R8A66597_DIR;
 570         if (info->type == R8A66597_BULK && info->dir_in)
 571                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
 572         val |= info->type | info->epnum;
 573         r8a66597_write(r8a66597, val, PIPECFG);
 574
 575         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
 576                        PIPEBUF);
 577         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
 578                        PIPEMAXP);
 579         if (info->interval)
 580                 info->interval--;
 581         r8a66597_write(r8a66597, info->interval, PIPEPERI);
 582 }
 583
 584
 585
 586 /* this function must be called with interrupt disabled */
 587 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 588 {
 589         struct r8a66597_pipe_info *info;
 590         struct urb *urb = td->urb;
 591
 592         if (td->pipenum > 0) {
 593                 info = &td->pipe->info;
 594                 cfifo_change(r8a66597, 0);
 595                 pipe_buffer_setting(r8a66597, info);
 596
 597                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 598                                    usb_pipeout(urb->pipe)) &&
 599                     !usb_pipecontrol(urb->pipe)) {
 600                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
 601                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
 602                         clear_all_buffer(r8a66597, td->pipe);
 603                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 604                                       usb_pipeout(urb->pipe), 1);
 605                 }
 606                 pipe_toggle_restore(r8a66597, td->pipe, urb);
 607         }
 608 }
 609
 610 /* this function must be called with interrupt disabled */
 611 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
 612                              struct usb_endpoint_descriptor *ep)
 613 {
 614         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 615
 616         memset(array, 0, sizeof(array));
 617         switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
 618         case USB_ENDPOINT_XFER_BULK:
 619                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 620                         array[i++] = 4;
 621                 else {
 622                         array[i++] = 3;
 623                         array[i++] = 5;
 624                 }
 625                 break;
 626         case USB_ENDPOINT_XFER_INT:
 627                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
 628                         array[i++] = 6;
 629                         array[i++] = 7;
 630                         array[i++] = 8;
 631                 } else
 632                         array[i++] = 9;
 633                 break;
 634         case USB_ENDPOINT_XFER_ISOC:
 635                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 636                         array[i++] = 2;
 637                 else
 638                         array[i++] = 1;
 639                 break;
 640         default:
 641                 err("Illegal type");
 642                 return 0;
 643         }
 644
 645         i = 1;
 646         min = array[0];
 647         while (array[i] != 0) {
 648                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
 649                         min = array[i];
 650                 i++;
 651         }
 652
 653         return min;
 654 }
 655
 656 static u16 get_r8a66597_type(__u8 type)
 657 {
 658         u16 r8a66597_type;
 659
 660         switch (type) {
 661         case USB_ENDPOINT_XFER_BULK:
 662                 r8a66597_type = R8A66597_BULK;
 663                 break;
 664         case USB_ENDPOINT_XFER_INT:
 665                 r8a66597_type = R8A66597_INT;
 666                 break;
 667         case USB_ENDPOINT_XFER_ISOC:
 668                 r8a66597_type = R8A66597_ISO;
 669                 break;
 670         default:
 671                 err("Illegal type");
 672                 r8a66597_type = 0x0000;
 673                 break;
 674         }
 675
 676         return r8a66597_type;
 677 }
 678
 679 static u16 get_bufnum(u16 pipenum)
 680 {
 681         u16 bufnum = 0;
 682
 683         if (pipenum == 0)
 684                 bufnum = 0;
 685         else if (check_bulk_or_isoc(pipenum))
 686                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
 687         else if (check_interrupt(pipenum))
 688                 bufnum = 4 + (pipenum - 6);
 689         else
 690                 err("Illegal pipenum (%d)", pipenum);
 691
 692         return bufnum;
 693 }
 694
 695 static u16 get_buf_bsize(u16 pipenum)
 696 {
 697         u16 buf_bsize = 0;
 698
 699         if (pipenum == 0)
 700                 buf_bsize = 3;
 701         else if (check_bulk_or_isoc(pipenum))
 702                 buf_bsize = R8A66597_BUF_BSIZE - 1;
 703         else if (check_interrupt(pipenum))
 704                 buf_bsize = 0;
 705         else
 706                 err("Illegal pipenum (%d)", pipenum);
 707
 708         return buf_bsize;
 709 }
 710
 711 /* this function must be called with interrupt disabled */
 712 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
 713                                      struct r8a66597_device *dev,
 714                                      struct r8a66597_pipe *pipe,
 715                                      struct urb *urb)
 716 {
 717         int i;
 718         struct r8a66597_pipe_info *info = &pipe->info;
 719
 720         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
 721                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
 722                         if ((r8a66597->dma_map & (1 << i)) != 0)
 723                                 continue;
 724
 725                         info("address %d, EndpointAddress 0x%02x use DMA FIFO",
 726                              usb_pipedevice(urb->pipe),
 727                              info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
 728                                             : info->epnum);
 729
 730                         r8a66597->dma_map |= 1 << i;
 731                         dev->dma_map |= 1 << i;
 732                         set_pipe_reg_addr(pipe, i);
 733
 734                         cfifo_change(r8a66597, 0);
 735                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
 736                                       MBW | CURPIPE, pipe->fifosel);
 737
 738                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
 739                                           pipe->info.pipenum);
 740                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
 741                         break;
 742                 }
 743         }
 744 }
 745
 746 /* this function must be called with interrupt disabled */
 747 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 748                                  struct usb_host_endpoint *hep,
 749                                  struct r8a66597_pipe_info *info)
 750 {
 751         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 752         struct r8a66597_pipe *pipe = hep->hcpriv;
 753
 754         dbg("enable_pipe:");
 755
 756         pipe->info = *info;
 757         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
 758         r8a66597->pipe_cnt[pipe->info.pipenum]++;
 759         dev->pipe_cnt[pipe->info.pipenum]++;
 760
 761         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 762 }
 763
 764 /* this function must be called with interrupt disabled */
 765 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 766 {
 767         struct r8a66597_td *td, *next;
 768         struct urb *urb;
 769         struct list_head *list = &r8a66597->pipe_queue[pipenum];
 770
 771         if (list_empty(list))
 772                 return;
 773
 774         list_for_each_entry_safe(td, next, list, queue) {
 775                 if (!td)
 776                         continue;
 777                 if (td->address != address)
 778                         continue;
 779
 780                 urb = td->urb;
 781                 list_del(&td->queue);
 782                 kfree(td);
 783
 784                 if (urb) {
 785                         urb->status = -ENODEV;
 786                         usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
 787                                         urb);
 788
 789                         spin_unlock(&r8a66597->lock);
 790                         usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb);
 791                         spin_lock(&r8a66597->lock);
 792                 }
 793                 break;
 794         }
 795 }
 796
 797 /* this function must be called with interrupt disabled */
 798 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
 799                                       struct r8a66597_device *dev)
 800 {
 801         int check_ep0 = 0;
 802         u16 pipenum;
 803
 804         if (!dev)
 805                 return;
 806
 807         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
 808                 if (!dev->pipe_cnt[pipenum])
 809                         continue;
 810
 811                 if (!check_ep0) {
 812                         check_ep0 = 1;
 813                         force_dequeue(r8a66597, 0, dev->address);
 814                 }
 815
 816                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
 817                 dev->pipe_cnt[pipenum] = 0;
 818                 force_dequeue(r8a66597, pipenum, dev->address);
 819         }
 820
 821         dbg("disable_pipe");
 822
 823         r8a66597->dma_map &= ~(dev->dma_map);
 824         dev->dma_map = 0;
 825 }
 826
 827 /* this function must be called with interrupt disabled */
 828 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
 829                            struct usb_host_endpoint *hep,
 830                            struct usb_endpoint_descriptor *ep)
 831 {
 832         struct r8a66597_pipe_info info;
 833
 834         info.pipenum = get_empty_pipenum(r8a66597, ep);
 835         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
 836         info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 837         info.maxpacket = ep->wMaxPacketSize;
 838         info.type = get_r8a66597_type(ep->bmAttributes
 839                                       & USB_ENDPOINT_XFERTYPE_MASK);
 840         info.bufnum = get_bufnum(info.pipenum);
 841         info.buf_bsize = get_buf_bsize(info.pipenum);
 842         info.interval = ep->bInterval;
 843         if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 844                 info.dir_in = 1;
 845         else
 846                 info.dir_in = 0;
 847
 848         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
 849 }
 850
 851 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 852 {
 853         struct r8a66597_device *dev;
 854
 855         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 856         dev->state = USB_STATE_CONFIGURED;
 857 }
 858
 859 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
 860                             u16 pipenum)
 861 {
 862         if (pipenum == 0 && usb_pipeout(urb->pipe))
 863                 enable_irq_empty(r8a66597, pipenum);
 864         else
 865                 enable_irq_ready(r8a66597, pipenum);
 866
 867         if (!usb_pipeisoc(urb->pipe))
 868                 enable_irq_nrdy(r8a66597, pipenum);
 869 }
 870
 871 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 872 {
 873         disable_irq_ready(r8a66597, pipenum);
 874         disable_irq_nrdy(r8a66597, pipenum);
 875 }
 876
 877 /* this function must be called with interrupt disabled */
 878 static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
 879 {
 880         r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
 881                                          | (1 << USB_PORT_FEAT_C_CONNECTION);
 882         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
 883         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
 884 }
 885
 886 /* this function must be called with interrupt disabled */
 887 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
 888 {
 889         u16 speed = get_rh_usb_speed(r8a66597, port);
 890         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
 891
 892         if (speed == HSMODE)
 893                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
 894         else if (speed == LSMODE)
 895                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
 896
 897         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
 898         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
 899 }
 900
 901 /* this function must be called with interrupt disabled */
 902 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
 903 {
 904         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
 905
 906         r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
 907         r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
 908
 909         disable_r8a66597_pipe_all(r8a66597, dev);
 910         free_usb_address(r8a66597, dev);
 911
 912         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 913 }
 914
 915 /* this function must be called with interrupt disabled */
 916 static void prepare_setup_packet(struct r8a66597 *r8a66597,
 917                                  struct r8a66597_td *td)
 918 {
 919         int i;
 920         u16 *p = (u16 *)td->urb->setup_packet;
 921         unsigned long setup_addr = USBREQ;
 922
 923         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
 924                        DCPMAXP);
 925         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 926
 927         for (i = 0; i < 4; i++) {
 928                 r8a66597_write(r8a66597, p[i], setup_addr);
 929                 setup_addr += 2;
 930         }
 931         r8a66597_write(r8a66597, SUREQ, DCPCTR);
 932 }
 933
 934 /* this function must be called with interrupt disabled */
 935 static void prepare_packet_read(struct r8a66597 *r8a66597,
 936                                 struct r8a66597_td *td)
 937 {
 938         struct urb *urb = td->urb;
 939
 940         if (usb_pipecontrol(urb->pipe)) {
 941                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 942                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 943                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 944                 if (urb->actual_length == 0) {
 945                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
 946                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 947                 }
 948                 pipe_irq_disable(r8a66597, td->pipenum);
 949                 pipe_start(r8a66597, td->pipe);
 950                 pipe_irq_enable(r8a66597, urb, td->pipenum);
 951         } else {
 952                 if (urb->actual_length == 0) {
 953                         pipe_irq_disable(r8a66597, td->pipenum);
 954                         pipe_setting(r8a66597, td);
 955                         pipe_stop(r8a66597, td->pipe);
 956                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
 957
 958                         if (td->pipe->pipetre) {
 959                                 r8a66597_write(r8a66597, TRCLR,
 960                                                 td->pipe->pipetre);
 961                                 r8a66597_write(r8a66597,
 962                                                 (urb->transfer_buffer_length
 963                                                 + td->maxpacket - 1)
 964                                                 / td->maxpacket,
 965                                                 td->pipe->pipetrn);
 966                                 r8a66597_bset(r8a66597, TRENB,
 967                                                 td->pipe->pipetre);
 968                         }
 969
 970                         pipe_start(r8a66597, td->pipe);
 971                         pipe_irq_enable(r8a66597, urb, td->pipenum);
 972                 }
 973         }
 974 }
 975
 976 /* this function must be called with interrupt disabled */
 977 static void prepare_packet_write(struct r8a66597 *r8a66597,
 978                                  struct r8a66597_td *td)
 979 {
 980         u16 tmp;
 981         struct urb *urb = td->urb;
 982
 983         if (usb_pipecontrol(urb->pipe)) {
 984                 pipe_stop(r8a66597, td->pipe);
 985                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
 986                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
 987                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 988                 if (urb->actual_length == 0) {
 989                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
 990                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 991                 }
 992         } else {
 993                 if (urb->actual_length == 0)
 994                         pipe_setting(r8a66597, td);
 995                 if (td->pipe->pipetre)
 996                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
 997         }
 998         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
 999
1000         fifo_change_from_pipe(r8a66597, td->pipe);
1001         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1002         if (unlikely((tmp & FRDY) == 0))
1003                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1004         else
1005                 packet_write(r8a66597, td->pipenum);
1006         pipe_start(r8a66597, td->pipe);
1007 }
1008
1009 /* this function must be called with interrupt disabled */
1010 static void prepare_status_packet(struct r8a66597 *r8a66597,
1011                                   struct r8a66597_td *td)
1012 {
1013         struct urb *urb = td->urb;
1014
1015         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1016         pipe_stop(r8a66597, td->pipe);
1017
1018         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1019                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1020                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1021                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1022                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1023                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1024                 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
1025                 enable_irq_empty(r8a66597, 0);
1026         } else {
1027                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1028                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1029                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1030                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1031                 enable_irq_ready(r8a66597, 0);
1032         }
1033         enable_irq_nrdy(r8a66597, 0);
1034         pipe_start(r8a66597, td->pipe);
1035 }
1036
1037 /* this function must be called with interrupt disabled */
1038 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1039 {
1040         BUG_ON(!td);
1041
1042         switch (td->type) {
1043         case USB_PID_SETUP:
1044                 if (td->urb->setup_packet[1] == USB_REQ_SET_ADDRESS) {
1045                         td->set_address = 1;
1046                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1047                                                                      td->urb);
1048                         if (td->urb->setup_packet[2] == 0)
1049                                 return -EPIPE;
1050                 }
1051                 prepare_setup_packet(r8a66597, td);
1052                 break;
1053         case USB_PID_IN:
1054                 prepare_packet_read(r8a66597, td);
1055                 break;
1056         case USB_PID_OUT:
1057                 prepare_packet_write(r8a66597, td);
1058                 break;
1059         case USB_PID_ACK:
1060                 prepare_status_packet(r8a66597, td);
1061                 break;
1062         default:
1063                 err("invalid type.");
1064                 break;
1065         }
1066
1067         return 0;
1068 }
1069
1070 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1071 {
1072         if (usb_pipeisoc(urb->pipe)) {
1073                 if (urb->number_of_packets == td->iso_cnt)
1074                         return 1;
1075         }
1076
1077         /* control or bulk or interrupt */
1078         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1079             (td->short_packet) || (td->zero_packet))
1080                 return 1;
1081
1082         return 0;
1083 }
1084
1085 /* this function must be called with interrupt disabled */
1086 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1087 {
1088         unsigned long time;
1089
1090         BUG_ON(!td);
1091
1092         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1093             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1094                 r8a66597->timeout_map |= 1 << td->pipenum;
1095                 switch (usb_pipetype(td->urb->pipe)) {
1096                 case PIPE_INTERRUPT:
1097                 case PIPE_ISOCHRONOUS:
1098                         time = 30;
1099                         break;
1100                 default:
1101                         time = 300;
1102                         break;
1103                 }
1104
1105                 mod_timer(&r8a66597->td_timer[td->pipenum],
1106                           jiffies + msecs_to_jiffies(time));
1107         }
1108 }
1109
1110 /* this function must be called with interrupt disabled */
1111 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1112                 u16 pipenum, struct urb *urb, int status)
1113 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1114 {
1115         int restart = 0;
1116         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1117
1118         r8a66597->timeout_map &= ~(1 << pipenum);
1119
1120         if (likely(td)) {
1121                 if (td->set_address && (status != 0 || urb->unlinked))
1122                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1123
1124                 pipe_toggle_save(r8a66597, td->pipe, urb);
1125                 list_del(&td->queue);
1126                 kfree(td);
1127         }
1128
1129         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1130                 restart = 1;
1131
1132         if (likely(urb)) {
1133                 if (usb_pipeisoc(urb->pipe))
1134                         urb->start_frame = r8a66597_get_frame(hcd);
1135
1136                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1137
1138                 urb->status = status;
1139                 spin_unlock(&r8a66597->lock);
1140                 usb_hcd_giveback_urb(hcd, urb);
1141                 spin_lock(&r8a66597->lock);
1142         }
1143
1144         if (restart) {
1145                 td = r8a66597_get_td(r8a66597, pipenum);
1146                 if (unlikely(!td))
1147                         return;
1148
1149                 start_transfer(r8a66597, td);
1150                 set_td_timer(r8a66597, td);
1151         }
1152 }
1153
1154 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1155 {
1156         u16 tmp;
1157         int rcv_len, bufsize, urb_len, size;
1158         u16 *buf;
1159         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1160         struct urb *urb;
1161         int finish = 0;
1162         int status = 0;
1163
1164         if (unlikely(!td))
1165                 return;
1166         urb = td->urb;
1167
1168         fifo_change_from_pipe(r8a66597, td->pipe);
1169         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1170         if (unlikely((tmp & FRDY) == 0)) {
1171                 pipe_stop(r8a66597, td->pipe);
1172                 pipe_irq_disable(r8a66597, pipenum);
1173                 err("in fifo not ready (%d)", pipenum);
1174                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1175                 return;
1176         }
1177
1178         /* prepare parameters */
1179         rcv_len = tmp & DTLN;
1180         if (usb_pipeisoc(urb->pipe)) {
1181                 buf = (u16 *)(urb->transfer_buffer +
1182                                 urb->iso_frame_desc[td->iso_cnt].offset);
1183                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1184         } else {
1185                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1186                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1187         }
1188         bufsize = min(urb_len, (int) td->maxpacket);
1189         if (rcv_len <= bufsize) {
1190                 size = rcv_len;
1191         } else {
1192                 size = bufsize;
1193                 status = -EOVERFLOW;
1194                 finish = 1;
1195         }
1196
1197         /* update parameters */
1198         urb->actual_length += size;
1199         if (rcv_len == 0)
1200                 td->zero_packet = 1;
1201         if (rcv_len < bufsize) {
1202                 td->short_packet = 1;
1203         }
1204         if (usb_pipeisoc(urb->pipe)) {
1205                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1206                 urb->iso_frame_desc[td->iso_cnt].status = status;
1207                 td->iso_cnt++;
1208                 finish = 0;
1209         }
1210
1211         /* check transfer finish */
1212         if (finish || check_transfer_finish(td, urb)) {
1213                 pipe_stop(r8a66597, td->pipe);
1214                 pipe_irq_disable(r8a66597, pipenum);
1215                 finish = 1;
1216         }
1217
1218         /* read fifo */
1219         if (urb->transfer_buffer) {
1220                 if (size == 0)
1221                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1222                 else
1223                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1224                                            buf, size);
1225         }
1226
1227         if (finish && pipenum != 0)
1228                 finish_request(r8a66597, td, pipenum, urb, status);
1229 }
1230
1231 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1232 {
1233         u16 tmp;
1234         int bufsize, size;
1235         u16 *buf;
1236         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1237         struct urb *urb;
1238
1239         if (unlikely(!td))
1240                 return;
1241         urb = td->urb;
1242
1243         fifo_change_from_pipe(r8a66597, td->pipe);
1244         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1245         if (unlikely((tmp & FRDY) == 0)) {
1246                 pipe_stop(r8a66597, td->pipe);
1247                 pipe_irq_disable(r8a66597, pipenum);
1248                 err("out write fifo not ready. (%d)", pipenum);
1249                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1250                 return;
1251         }
1252
1253         /* prepare parameters */
1254         bufsize = td->maxpacket;
1255         if (usb_pipeisoc(urb->pipe)) {
1256                 buf = (u16 *)(urb->transfer_buffer +
1257                                 urb->iso_frame_desc[td->iso_cnt].offset);
1258                 size = min(bufsize,
1259                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1260         } else {
1261                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1262                 size = min((int)bufsize,
1263                            urb->transfer_buffer_length - urb->actual_length);
1264         }
1265
1266         /* write fifo */
1267         if (pipenum > 0)
1268                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1269         if (urb->transfer_buffer) {
1270                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1271                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1272                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1273         }
1274
1275         /* update parameters */
1276         urb->actual_length += size;
1277         if (usb_pipeisoc(urb->pipe)) {
1278                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1279                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1280                 td->iso_cnt++;
1281         }
1282
1283         /* check transfer finish */
1284         if (check_transfer_finish(td, urb)) {
1285                 disable_irq_ready(r8a66597, pipenum);
1286                 enable_irq_empty(r8a66597, pipenum);
1287                 if (!usb_pipeisoc(urb->pipe))
1288                         enable_irq_nrdy(r8a66597, pipenum);
1289         } else
1290                 pipe_irq_enable(r8a66597, urb, pipenum);
1291 }
1292
1293
1294 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1295 {
1296         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1297         struct urb *urb;
1298         u8 finish = 0;
1299
1300         if (unlikely(!td))
1301                 return;
1302         urb = td->urb;
1303
1304         switch (td->type) {
1305         case USB_PID_IN:
1306         case USB_PID_OUT:
1307                 if (check_transfer_finish(td, urb))
1308                         td->type = USB_PID_ACK;
1309                 break;
1310         case USB_PID_SETUP:
1311                 if (urb->transfer_buffer_length == urb->actual_length)
1312                         td->type = USB_PID_ACK;
1313                 else if (usb_pipeout(urb->pipe))
1314                         td->type = USB_PID_OUT;
1315                 else
1316                         td->type = USB_PID_IN;
1317                 break;
1318         case USB_PID_ACK:
1319                 finish = 1;
1320                 break;
1321         }
1322
1323         if (finish || status != 0 || urb->unlinked)
1324                 finish_request(r8a66597, td, 0, urb, status);
1325         else
1326                 start_transfer(r8a66597, td);
1327 }
1328
1329 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1330 {
1331         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1332
1333         if (td) {
1334                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1335
1336                 if (pid == PID_NAK)
1337                         return -ECONNRESET;
1338                 else
1339                         return -EPIPE;
1340         }
1341         return 0;
1342 }
1343
1344 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1345 {
1346         u16 check;
1347         u16 pipenum;
1348         u16 mask;
1349         struct r8a66597_td *td;
1350
1351         mask = r8a66597_read(r8a66597, BRDYSTS)
1352                & r8a66597_read(r8a66597, BRDYENB);
1353         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1354         if (mask & BRDY0) {
1355                 td = r8a66597_get_td(r8a66597, 0);
1356                 if (td && td->type == USB_PID_IN)
1357                         packet_read(r8a66597, 0);
1358                 else
1359                         pipe_irq_disable(r8a66597, 0);
1360                 check_next_phase(r8a66597, 0);
1361         }
1362
1363         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1364                 check = 1 << pipenum;
1365                 if (mask & check) {
1366                         td = r8a66597_get_td(r8a66597, pipenum);
1367                         if (unlikely(!td))
1368                                 continue;
1369
1370                         if (td->type == USB_PID_IN)
1371                                 packet_read(r8a66597, pipenum);
1372                         else if (td->type == USB_PID_OUT)
1373                                 packet_write(r8a66597, pipenum);
1374                 }
1375         }
1376 }
1377
1378 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1379 {
1380         u16 tmp;
1381         u16 check;
1382         u16 pipenum;
1383         u16 mask;
1384         struct r8a66597_td *td;
1385
1386         mask = r8a66597_read(r8a66597, BEMPSTS)
1387                & r8a66597_read(r8a66597, BEMPENB);
1388         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1389         if (mask & BEMP0) {
1390                 cfifo_change(r8a66597, 0);
1391                 td = r8a66597_get_td(r8a66597, 0);
1392                 if (td && td->type != USB_PID_OUT)
1393                         disable_irq_empty(r8a66597, 0);
1394                 check_next_phase(r8a66597, 0);
1395         }
1396
1397         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1398                 check = 1 << pipenum;
1399                 if (mask &  check) {
1400                         struct r8a66597_td *td;
1401                         td = r8a66597_get_td(r8a66597, pipenum);
1402                         if (unlikely(!td))
1403                                 continue;
1404
1405                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1406                         if ((tmp & INBUFM) == 0) {
1407                                 disable_irq_empty(r8a66597, pipenum);
1408                                 pipe_irq_disable(r8a66597, pipenum);
1409                                 finish_request(r8a66597, td, pipenum, td->urb,
1410                                                 0);
1411                         }
1412                 }
1413         }
1414 }
1415
1416 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1417 {
1418         u16 check;
1419         u16 pipenum;
1420         u16 mask;
1421         int status;
1422
1423         mask = r8a66597_read(r8a66597, NRDYSTS)
1424                & r8a66597_read(r8a66597, NRDYENB);
1425         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1426         if (mask & NRDY0) {
1427                 cfifo_change(r8a66597, 0);
1428                 status = get_urb_error(r8a66597, 0);
1429                 pipe_irq_disable(r8a66597, 0);
1430                 check_next_phase(r8a66597, status);
1431         }
1432
1433         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1434                 check = 1 << pipenum;
1435                 if (mask & check) {
1436                         struct r8a66597_td *td;
1437                         td = r8a66597_get_td(r8a66597, pipenum);
1438                         if (unlikely(!td))
1439                                 continue;
1440
1441                         status = get_urb_error(r8a66597, pipenum);
1442                         pipe_irq_disable(r8a66597, pipenum);
1443                         pipe_stop(r8a66597, td->pipe);
1444                         finish_request(r8a66597, td, pipenum, td->urb, status);
1445                 }
1446         }
1447 }
1448
1449 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
1450 {
1451         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1452
1453         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1454         rh->scount = R8A66597_MAX_SAMPLING;
1455         mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
1456 }
1457
1458 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1459 {
1460         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1461         u16 intsts0, intsts1, intsts2;
1462         u16 intenb0, intenb1, intenb2;
1463         u16 mask0, mask1, mask2;
1464         int status;
1465
1466         spin_lock(&r8a66597->lock);
1467
1468         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1469         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1470         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1471         intenb0 = r8a66597_read(r8a66597, INTENB0);
1472         intenb1 = r8a66597_read(r8a66597, INTENB1);
1473         intenb2 = r8a66597_read(r8a66597, INTENB2);
1474
1475         mask2 = intsts2 & intenb2;
1476         mask1 = intsts1 & intenb1;
1477         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1478         if (mask2) {
1479                 if (mask2 & ATTCH) {
1480                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1481                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1482
1483                         /* start usb bus sampling */
1484                         start_root_hub_sampling(r8a66597, 1);
1485                 }
1486                 if (mask2 & DTCH) {
1487                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1488                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1489                         r8a66597_usb_disconnect(r8a66597, 1);
1490                 }
1491         }
1492
1493         if (mask1) {
1494                 if (mask1 & ATTCH) {
1495                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1496                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1497
1498                         /* start usb bus sampling */
1499                         start_root_hub_sampling(r8a66597, 0);
1500                 }
1501                 if (mask1 & DTCH) {
1502                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1503                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1504                         r8a66597_usb_disconnect(r8a66597, 0);
1505                 }
1506                 if (mask1 & SIGN) {
1507                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1508                         status = get_urb_error(r8a66597, 0);
1509                         check_next_phase(r8a66597, status);
1510                 }
1511                 if (mask1 & SACK) {
1512                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1513                         check_next_phase(r8a66597, 0);
1514                 }
1515         }
1516         if (mask0) {
1517                 if (mask0 & BRDY)
1518                         irq_pipe_ready(r8a66597);
1519                 if (mask0 & BEMP)
1520                         irq_pipe_empty(r8a66597);
1521                 if (mask0 & NRDY)
1522                         irq_pipe_nrdy(r8a66597);
1523         }
1524
1525         spin_unlock(&r8a66597->lock);
1526         return IRQ_HANDLED;
1527 }
1528
1529 /* this function must be called with interrupt disabled */
1530 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1531 {
1532         u16 tmp;
1533         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1534
1535         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1536                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1537
1538                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1539                 if ((tmp & USBRST) == USBRST) {
1540                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1541                                       dvstctr_reg);
1542                         mod_timer(&r8a66597->rh_timer,
1543                                   jiffies + msecs_to_jiffies(50));
1544                 } else
1545                         r8a66597_usb_connect(r8a66597, port);
1546         }
1547
1548         if (rh->scount > 0) {
1549                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1550                 if (tmp == rh->old_syssts) {
1551                         rh->scount--;
1552                         if (rh->scount == 0) {
1553                                 if (tmp == FS_JSTS) {
1554                                         r8a66597_bset(r8a66597, HSE,
1555                                                       get_syscfg_reg(port));
1556                                         r8a66597_usb_preconnect(r8a66597, port);
1557                                 } else if (tmp == LS_JSTS) {
1558                                         r8a66597_bclr(r8a66597, HSE,
1559                                                       get_syscfg_reg(port));
1560                                         r8a66597_usb_preconnect(r8a66597, port);
1561                                 } else if (tmp == SE0)
1562                                         r8a66597_bset(r8a66597, ATTCHE,
1563                                                       get_intenb_reg(port));
1564                         } else {
1565                                 mod_timer(&r8a66597->rh_timer,
1566                                           jiffies + msecs_to_jiffies(50));
1567                         }
1568                 } else {
1569                         rh->scount = R8A66597_MAX_SAMPLING;
1570                         rh->old_syssts = tmp;
1571                         mod_timer(&r8a66597->rh_timer,
1572                                   jiffies + msecs_to_jiffies(50));
1573                 }
1574         }
1575 }
1576
1577 static void r8a66597_td_timer(unsigned long _r8a66597)
1578 {
1579         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1580         unsigned long flags;
1581         u16 pipenum;
1582         struct r8a66597_td *td, *new_td = NULL;
1583         struct r8a66597_pipe *pipe;
1584
1585         spin_lock_irqsave(&r8a66597->lock, flags);
1586         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1587                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1588                         continue;
1589                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1590                         continue;
1591
1592                 td = r8a66597_get_td(r8a66597, pipenum);
1593                 if (!td) {
1594                         r8a66597->timeout_map &= ~(1 << pipenum);
1595                         continue;
1596                 }
1597
1598                 if (td->urb->actual_length) {
1599                         set_td_timer(r8a66597, td);
1600                         break;
1601                 }
1602
1603                 pipe = td->pipe;
1604                 pipe_stop(r8a66597, pipe);
1605
1606                 new_td = td;
1607                 do {
1608                         list_move_tail(&new_td->queue,
1609                                        &r8a66597->pipe_queue[pipenum]);
1610                         new_td = r8a66597_get_td(r8a66597, pipenum);
1611                         if (!new_td) {
1612                                 new_td = td;
1613                                 break;
1614                         }
1615                 } while (td != new_td && td->address == new_td->address);
1616
1617                 start_transfer(r8a66597, new_td);
1618
1619                 if (td == new_td)
1620                         r8a66597->timeout_map &= ~(1 << pipenum);
1621                 else
1622                         set_td_timer(r8a66597, new_td);
1623                 break;
1624         }
1625         spin_unlock_irqrestore(&r8a66597->lock, flags);
1626 }
1627
1628 static void r8a66597_timer(unsigned long _r8a66597)
1629 {
1630         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1631         unsigned long flags;
1632
1633         spin_lock_irqsave(&r8a66597->lock, flags);
1634
1635         r8a66597_root_hub_control(r8a66597, 0);
1636         r8a66597_root_hub_control(r8a66597, 1);
1637
1638         spin_unlock_irqrestore(&r8a66597->lock, flags);
1639 }
1640
1641 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1642 {
1643         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1644
1645         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1646             (urb->dev->state == USB_STATE_CONFIGURED))
1647                 return 1;
1648         else
1649                 return 0;
1650 }
1651
1652 static int r8a66597_start(struct usb_hcd *hcd)
1653 {
1654         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1655
1656         hcd->state = HC_STATE_RUNNING;
1657         return enable_controller(r8a66597);
1658 }
1659
1660 static void r8a66597_stop(struct usb_hcd *hcd)
1661 {
1662         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1663
1664         disable_controller(r8a66597);
1665 }
1666
1667 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1668 {
1669         unsigned int usb_address = usb_pipedevice(urb->pipe);
1670         u16 root_port, hub_port;
1671
1672         if (usb_address == 0) {
1673                 get_port_number(urb->dev->devpath,
1674                                 &root_port, &hub_port);
1675                 set_devadd_reg(r8a66597, 0,
1676                                get_r8a66597_usb_speed(urb->dev->speed),
1677                                get_parent_r8a66597_address(r8a66597, urb->dev),
1678                                hub_port, root_port);
1679         }
1680 }
1681
1682 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1683                                             struct urb *urb,
1684                                             struct usb_host_endpoint *hep)
1685 {
1686         struct r8a66597_td *td;
1687         u16 pipenum;
1688
1689         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1690         if (td == NULL)
1691                 return NULL;
1692
1693         pipenum = r8a66597_get_pipenum(urb, hep);
1694         td->pipenum = pipenum;
1695         td->pipe = hep->hcpriv;
1696         td->urb = urb;
1697         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1698         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1699                                       !usb_pipein(urb->pipe));
1700         if (usb_pipecontrol(urb->pipe))
1701                 td->type = USB_PID_SETUP;
1702         else if (usb_pipein(urb->pipe))
1703                 td->type = USB_PID_IN;
1704         else
1705                 td->type = USB_PID_OUT;
1706         INIT_LIST_HEAD(&td->queue);
1707
1708         return td;
1709 }
1710
1711 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1712                                 struct urb *urb,
1713                                 gfp_t mem_flags)
1714 {
1715         struct usb_host_endpoint *hep = urb->ep;
1716         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1717         struct r8a66597_td *td = NULL;
1718         int ret, request = 0;
1719         unsigned long flags;
1720
1721         spin_lock_irqsave(&r8a66597->lock, flags);
1722         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1723                 ret = -ENODEV;
1724                 goto error_not_linked;
1725         }
1726
1727         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1728         if (ret)
1729                 goto error_not_linked;
1730
1731         if (!hep->hcpriv) {
1732                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1733                                 GFP_ATOMIC);
1734                 if (!hep->hcpriv) {
1735                         ret = -ENOMEM;
1736                         goto error;
1737                 }
1738                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1739                 if (usb_pipeendpoint(urb->pipe))
1740                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1741         }
1742
1743         if (unlikely(check_pipe_config(r8a66597, urb)))
1744                 init_pipe_config(r8a66597, urb);
1745
1746         set_address_zero(r8a66597, urb);
1747         td = r8a66597_make_td(r8a66597, urb, hep);
1748         if (td == NULL) {
1749                 ret = -ENOMEM;
1750                 goto error;
1751         }
1752         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1753                 request = 1;
1754         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1755         urb->hcpriv = td;
1756
1757         if (request) {
1758                 ret = start_transfer(r8a66597, td);
1759                 if (ret < 0) {
1760                         list_del(&td->queue);
1761                         kfree(td);
1762                 }
1763         } else
1764                 set_td_timer(r8a66597, td);
1765
1766 error:
1767         if (ret)
1768                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1769 error_not_linked:
1770         spin_unlock_irqrestore(&r8a66597->lock, flags);
1771         return ret;
1772 }
1773
1774 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1775                 int status)
1776 {
1777         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1778         struct r8a66597_td *td;
1779         unsigned long flags;
1780         int rc;
1781
1782         spin_lock_irqsave(&r8a66597->lock, flags);
1783         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1784         if (rc)
1785                 goto done;
1786
1787         if (urb->hcpriv) {
1788                 td = urb->hcpriv;
1789                 pipe_stop(r8a66597, td->pipe);
1790                 pipe_irq_disable(r8a66597, td->pipenum);
1791                 disable_irq_empty(r8a66597, td->pipenum);
1792                 finish_request(r8a66597, td, td->pipenum, urb, status);
1793         }
1794  done:
1795         spin_unlock_irqrestore(&r8a66597->lock, flags);
1796         return rc;
1797 }
1798
1799 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1800                                       struct usb_host_endpoint *hep)
1801 {
1802         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1803         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1804         struct r8a66597_td *td;
1805         struct urb *urb = NULL;
1806         u16 pipenum;
1807         unsigned long flags;
1808
1809         if (pipe == NULL)
1810                 return;
1811         pipenum = pipe->info.pipenum;
1812
1813         if (pipenum == 0) {
1814                 kfree(hep->hcpriv);
1815                 hep->hcpriv = NULL;
1816                 return;
1817         }
1818
1819         spin_lock_irqsave(&r8a66597->lock, flags);
1820         pipe_stop(r8a66597, pipe);
1821         pipe_irq_disable(r8a66597, pipenum);
1822         disable_irq_empty(r8a66597, pipenum);
1823         td = r8a66597_get_td(r8a66597, pipenum);
1824         if (td)
1825                 urb = td->urb;
1826         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1827         kfree(hep->hcpriv);
1828         hep->hcpriv = NULL;
1829         spin_unlock_irqrestore(&r8a66597->lock, flags);
1830 }
1831
1832 static int r8a66597_get_frame(struct usb_hcd *hcd)
1833 {
1834         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1835         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1836 }
1837
1838 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1839 {
1840         int chix;
1841
1842         if (udev->state == USB_STATE_CONFIGURED &&
1843             udev->parent && udev->parent->devnum > 1 &&
1844             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1845                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1846
1847         for (chix = 0; chix < udev->maxchild; chix++) {
1848                 struct usb_device *childdev = udev->children[chix];
1849
1850                 if (childdev)
1851                         collect_usb_address_map(childdev, map);
1852         }
1853 }
1854
1855 /* this function must be called with interrupt disabled */
1856 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1857                                                    int addr)
1858 {
1859         struct r8a66597_device *dev;
1860         struct list_head *list = &r8a66597->child_device;
1861
1862         list_for_each_entry(dev, list, device_list) {
1863                 if (!dev)
1864                         continue;
1865                 if (dev->usb_address != addr)
1866                         continue;
1867
1868                 return dev;
1869         }
1870
1871         err("get_r8a66597_device fail.(%d)\n", addr);
1872         return NULL;
1873 }
1874
1875 static void update_usb_address_map(struct r8a66597 *r8a66597,
1876                                    struct usb_device *root_hub,
1877                                    unsigned long *map)
1878 {
1879         int i, j, addr;
1880         unsigned long diff;
1881         unsigned long flags;
1882
1883         for (i = 0; i < 4; i++) {
1884                 diff = r8a66597->child_connect_map[i] ^ map[i];
1885                 if (!diff)
1886                         continue;
1887
1888                 for (j = 0; j < 32; j++) {
1889                         if (!(diff & (1 << j)))
1890                                 continue;
1891
1892                         addr = i * 32 + j;
1893                         if (map[i] & (1 << j))
1894                                 set_child_connect_map(r8a66597, addr);
1895                         else {
1896                                 struct r8a66597_device *dev;
1897
1898                                 spin_lock_irqsave(&r8a66597->lock, flags);
1899                                 dev = get_r8a66597_device(r8a66597, addr);
1900                                 disable_r8a66597_pipe_all(r8a66597, dev);
1901                                 free_usb_address(r8a66597, dev);
1902                                 put_child_connect_map(r8a66597, addr);
1903                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
1904                         }
1905                 }
1906         }
1907 }
1908
1909 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
1910                                         struct usb_hcd *hcd)
1911 {
1912         struct usb_bus *bus;
1913         unsigned long now_map[4];
1914
1915         memset(now_map, 0, sizeof(now_map));
1916
1917         list_for_each_entry(bus, &usb_bus_list, bus_list) {
1918                 if (!bus->root_hub)
1919                         continue;
1920
1921                 if (bus->busnum != hcd->self.busnum)
1922                         continue;
1923
1924                 collect_usb_address_map(bus->root_hub, now_map);
1925                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
1926         }
1927 }
1928
1929 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
1930 {
1931         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1932         unsigned long flags;
1933         int i;
1934
1935         r8a66597_check_detect_child(r8a66597, hcd);
1936
1937         spin_lock_irqsave(&r8a66597->lock, flags);
1938
1939         *buf = 0;       /* initialize (no change) */
1940
1941         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
1942                 if (r8a66597->root_hub[i].port & 0xffff0000)
1943                         *buf |= 1 << (i + 1);
1944         }
1945
1946         spin_unlock_irqrestore(&r8a66597->lock, flags);
1947
1948         return (*buf != 0);
1949 }
1950
1951 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
1952                                     struct usb_hub_descriptor *desc)
1953 {
1954         desc->bDescriptorType = 0x29;
1955         desc->bHubContrCurrent = 0;
1956         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
1957         desc->bDescLength = 9;
1958         desc->bPwrOn2PwrGood = 0;
1959         desc->wHubCharacteristics = cpu_to_le16(0x0011);
1960         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
1961         desc->bitmap[1] = ~0;
1962 }
1963
1964 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1965                                 u16 wIndex, char *buf, u16 wLength)
1966 {
1967         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1968         int ret;
1969         int port = (wIndex & 0x00FF) - 1;
1970         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1971         unsigned long flags;
1972
1973         ret = 0;
1974
1975         spin_lock_irqsave(&r8a66597->lock, flags);
1976         switch (typeReq) {
1977         case ClearHubFeature:
1978         case SetHubFeature:
1979                 switch (wValue) {
1980                 case C_HUB_OVER_CURRENT:
1981                 case C_HUB_LOCAL_POWER:
1982                         break;
1983                 default:
1984                         goto error;
1985                 }
1986                 break;
1987         case ClearPortFeature:
1988                 if (wIndex > R8A66597_MAX_ROOT_HUB)
1989                         goto error;
1990                 if (wLength != 0)
1991                         goto error;
1992
1993                 switch (wValue) {
1994                 case USB_PORT_FEAT_ENABLE:
1995                         rh->port &= (1 << USB_PORT_FEAT_POWER);
1996                         break;
1997                 case USB_PORT_FEAT_SUSPEND:
1998                         break;
1999                 case USB_PORT_FEAT_POWER:
2000                         r8a66597_port_power(r8a66597, port, 0);
2001                         break;
2002                 case USB_PORT_FEAT_C_ENABLE:
2003                 case USB_PORT_FEAT_C_SUSPEND:
2004                 case USB_PORT_FEAT_C_CONNECTION:
2005                 case USB_PORT_FEAT_C_OVER_CURRENT:
2006                 case USB_PORT_FEAT_C_RESET:
2007                         break;
2008                 default:
2009                         goto error;
2010                 }
2011                 rh->port &= ~(1 << wValue);
2012                 break;
2013         case GetHubDescriptor:
2014                 r8a66597_hub_descriptor(r8a66597,
2015                                         (struct usb_hub_descriptor *)buf);
2016                 break;
2017         case GetHubStatus:
2018                 *buf = 0x00;
2019                 break;
2020         case GetPortStatus:
2021                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2022                         goto error;
2023                 *(u32 *)buf = rh->port;
2024                 break;
2025         case SetPortFeature:
2026                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2027                         goto error;
2028                 if (wLength != 0)
2029                         goto error;
2030
2031                 switch (wValue) {
2032                 case USB_PORT_FEAT_SUSPEND:
2033                         break;
2034                 case USB_PORT_FEAT_POWER:
2035                         r8a66597_port_power(r8a66597, port, 1);
2036                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2037                         break;
2038                 case USB_PORT_FEAT_RESET: {
2039                         struct r8a66597_device *dev = rh->dev;
2040
2041                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2042
2043                         disable_r8a66597_pipe_all(r8a66597, dev);
2044                         free_usb_address(r8a66597, dev);
2045
2046                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2047                                       get_dvstctr_reg(port));
2048                         mod_timer(&r8a66597->rh_timer,
2049                                   jiffies + msecs_to_jiffies(50));
2050                         }
2051                         break;
2052                 default:
2053                         goto error;
2054                 }
2055                 rh->port |= 1 << wValue;
2056                 break;
2057         default:
2058 error:
2059                 ret = -EPIPE;
2060                 break;
2061         }
2062
2063         spin_unlock_irqrestore(&r8a66597->lock, flags);
2064         return ret;
2065 }
2066
2067 static struct hc_driver r8a66597_hc_driver = {
2068         .description =          hcd_name,
2069         .hcd_priv_size =        sizeof(struct r8a66597),
2070         .irq =                  r8a66597_irq,
2071
2072         /*
2073          * generic hardware linkage
2074          */
2075         .flags =                HCD_USB2,
2076
2077         .start =                r8a66597_start,
2078         .stop =                 r8a66597_stop,
2079
2080         /*
2081          * managing i/o requests and associated device resources
2082          */
2083         .urb_enqueue =          r8a66597_urb_enqueue,
2084         .urb_dequeue =          r8a66597_urb_dequeue,
2085         .endpoint_disable =     r8a66597_endpoint_disable,
2086
2087         /*
2088          * periodic schedule support
2089          */
2090         .get_frame_number =     r8a66597_get_frame,
2091
2092         /*
2093          * root hub support
2094          */
2095         .hub_status_data =      r8a66597_hub_status_data,
2096         .hub_control =          r8a66597_hub_control,
2097 };
2098
2099 #if defined(CONFIG_PM)
2100 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2101 {
2102         pdev->dev.power.power_state = state;
2103         return 0;
2104 }
2105
2106 static int r8a66597_resume(struct platform_device *pdev)
2107 {
2108         pdev->dev.power.power_state = PMSG_ON;
2109         return 0;
2110 }
2111 #else   /* if defined(CONFIG_PM) */
2112 #define r8a66597_suspend        NULL
2113 #define r8a66597_resume         NULL
2114 #endif
2115
2116 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2117 {
2118         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2119         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2120
2121         del_timer_sync(&r8a66597->rh_timer);
2122         iounmap((void *)r8a66597->reg);
2123         usb_remove_hcd(hcd);
2124         usb_put_hcd(hcd);
2125         return 0;
2126 }
2127
2128 #define resource_len(r) (((r)->end - (r)->start) + 1)
2129 static int __init r8a66597_probe(struct platform_device *pdev)
2130 {
2131         struct resource *res = NULL;
2132         int irq = -1;
2133         void __iomem *reg = NULL;
2134         struct usb_hcd *hcd = NULL;
2135         struct r8a66597 *r8a66597;
2136         int ret = 0;
2137         int i;
2138
2139         if (pdev->dev.dma_mask) {
2140                 ret = -EINVAL;
2141                 err("dma not support");
2142                 goto clean_up;
2143         }
2144
2145         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2146                                            (char *)hcd_name);
2147         if (!res) {
2148                 ret = -ENODEV;
2149                 err("platform_get_resource_byname error.");
2150                 goto clean_up;
2151         }
2152
2153         irq = platform_get_irq(pdev, 0);
2154         if (irq < 0) {
2155                 ret = -ENODEV;
2156                 err("platform_get_irq error.");
2157                 goto clean_up;
2158         }
2159
2160         reg = ioremap(res->start, resource_len(res));
2161         if (reg == NULL) {
2162                 ret = -ENOMEM;
2163                 err("ioremap error.");
2164                 goto clean_up;
2165         }
2166
2167         /* initialize hcd */
2168         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2169         if (!hcd) {
2170                 ret = -ENOMEM;
2171                 err("Failed to create hcd");
2172                 goto clean_up;
2173         }
2174         r8a66597 = hcd_to_r8a66597(hcd);
2175         memset(r8a66597, 0, sizeof(struct r8a66597));
2176         dev_set_drvdata(&pdev->dev, r8a66597);
2177
2178         spin_lock_init(&r8a66597->lock);
2179         init_timer(&r8a66597->rh_timer);
2180         r8a66597->rh_timer.function = r8a66597_timer;
2181         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2182         r8a66597->reg = (unsigned long)reg;
2183
2184         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2185                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2186                 init_timer(&r8a66597->td_timer[i]);
2187                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2188                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2189         }
2190         INIT_LIST_HEAD(&r8a66597->child_device);
2191
2192         hcd->rsrc_start = res->start;
2193         ret = usb_add_hcd(hcd, irq, 0);
2194         if (ret != 0) {
2195                 err("Failed to add hcd");
2196                 goto clean_up;
2197         }
2198
2199         return 0;
2200
2201 clean_up:
2202         if (reg)
2203                 iounmap(reg);
2204
2205         return ret;
2206 }
2207
2208 static struct platform_driver r8a66597_driver = {
2209         .probe =        r8a66597_probe,
2210         .remove =       r8a66597_remove,
2211         .suspend =      r8a66597_suspend,
2212         .resume =       r8a66597_resume,
2213         .driver         = {
2214                 .name = (char *) hcd_name,
2215         },
2216 };
2217
2218 static int __init r8a66597_init(void)
2219 {
2220         if (usb_disabled())
2221                 return -ENODEV;
2222
2223         info("driver %s, %s", hcd_name, DRIVER_VERSION);
2224         return platform_driver_register(&r8a66597_driver);
2225 }
2226 module_init(r8a66597_init);
2227
2228 static void __exit r8a66597_cleanup(void)
2229 {
2230         platform_driver_unregister(&r8a66597_driver);
2231 }
2232 module_exit(r8a66597_cleanup);
2233