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 MODULE_ALIAS("platform:r8a66597_hcd");
  48
  49 #define DRIVER_VERSION  "29 May 2007"
  50
  51 static const char hcd_name[] = "r8a66597_hcd";
  52
  53 /* module parameters */
  54 static unsigned short clock = XTAL12;
  55 module_param(clock, ushort, 0644);
  56 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
  57                 "(default=0)");
  58
  59 static unsigned short vif = LDRV;
  60 module_param(vif, ushort, 0644);
  61 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
  62
  63 static unsigned short endian;
  64 module_param(endian, ushort, 0644);
  65 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
  66
  67 static unsigned short irq_sense = INTL;
  68 module_param(irq_sense, ushort, 0644);
  69 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
  70                 "(default=32)");
  71
  72 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
  73 static int r8a66597_get_frame(struct usb_hcd *hcd);
  74
  75 /* this function must be called with interrupt disabled */
  76 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  77                             unsigned long reg)
  78 {
  79         u16 tmp;
  80
  81         tmp = r8a66597_read(r8a66597, INTENB0);
  82         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  83         r8a66597_bset(r8a66597, 1 << pipenum, reg);
  84         r8a66597_write(r8a66597, tmp, INTENB0);
  85 }
  86
  87 /* this function must be called with interrupt disabled */
  88 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  89                              unsigned long reg)
  90 {
  91         u16 tmp;
  92
  93         tmp = r8a66597_read(r8a66597, INTENB0);
  94         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  95         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
  96         r8a66597_write(r8a66597, tmp, INTENB0);
  97 }
  98
  99 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
 100                            u16 usbspd, u8 upphub, u8 hubport, int port)
 101 {
 102         u16 val;
 103         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
 104
 105         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
 106         r8a66597_write(r8a66597, val, devadd_reg);
 107 }
 108
 109 static int enable_controller(struct r8a66597 *r8a66597)
 110 {
 111         u16 tmp;
 112         int i = 0;
 113
 114         do {
 115                 r8a66597_write(r8a66597, USBE, SYSCFG0);
 116                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 117                 if (i++ > 1000) {
 118                         err("register access fail.");
 119                         return -ENXIO;
 120                 }
 121         } while ((tmp & USBE) != USBE);
 122         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 123         r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
 124
 125         i = 0;
 126         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 127         do {
 128                 msleep(1);
 129                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 130                 if (i++ > 500) {
 131                         err("register access fail.");
 132                         return -ENXIO;
 133                 }
 134         } while ((tmp & SCKE) != SCKE);
 135
 136         r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0);
 137         r8a66597_bset(r8a66597, DRPD, SYSCFG1);
 138
 139         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 140         r8a66597_bset(r8a66597, HSE, SYSCFG0);
 141         r8a66597_bset(r8a66597, HSE, SYSCFG1);
 142         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 143
 144         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
 145         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
 146         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
 147         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 148
 149         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG);
 150         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG);
 151
 152         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 153         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 154         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 155
 156         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 157
 158         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
 159         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
 160         r8a66597_bset(r8a66597, ATTCHE, INTENB1);
 161         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
 162         r8a66597_bset(r8a66597, ATTCHE, INTENB2);
 163
 164         return 0;
 165 }
 166
 167 static void disable_controller(struct r8a66597 *r8a66597)
 168 {
 169         u16 tmp;
 170
 171         r8a66597_write(r8a66597, 0, INTENB0);
 172         r8a66597_write(r8a66597, 0, INTENB1);
 173         r8a66597_write(r8a66597, 0, INTENB2);
 174         r8a66597_write(r8a66597, 0, INTSTS0);
 175         r8a66597_write(r8a66597, 0, INTSTS1);
 176         r8a66597_write(r8a66597, 0, INTSTS2);
 177
 178         r8a66597_port_power(r8a66597, 0, 0);
 179         r8a66597_port_power(r8a66597, 1, 0);
 180
 181         do {
 182                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 183                 udelay(640);
 184         } while (tmp == EDGESTS);
 185
 186         r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0);
 187         r8a66597_bclr(r8a66597, DRPD, SYSCFG1);
 188         r8a66597_bclr(r8a66597, HSE, SYSCFG0);
 189         r8a66597_bclr(r8a66597, HSE, SYSCFG1);
 190
 191         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 192         udelay(1);
 193         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 194         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 195         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 196 }
 197
 198 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
 199                                        struct usb_device *udev)
 200 {
 201         struct r8a66597_device *dev;
 202
 203         if (udev->parent && udev->parent->devnum != 1)
 204                 udev = udev->parent;
 205
 206         dev = dev_get_drvdata(&udev->dev);
 207         if (dev)
 208                 return dev->address;
 209         else
 210                 return 0;
 211 }
 212
 213 static int is_child_device(char *devpath)
 214 {
 215         return (devpath[2] ? 1 : 0);
 216 }
 217
 218 static int is_hub_limit(char *devpath)
 219 {
 220         return ((strlen(devpath) >= 4) ? 1 : 0);
 221 }
 222
 223 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
 224 {
 225         if (root_port) {
 226                 *root_port = (devpath[0] & 0x0F) - 1;
 227                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
 228                         err("illegal root port number");
 229         }
 230         if (hub_port)
 231                 *hub_port = devpath[2] & 0x0F;
 232 }
 233
 234 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
 235 {
 236         u16 usbspd = 0;
 237
 238         switch (speed) {
 239         case USB_SPEED_LOW:
 240                 usbspd = LSMODE;
 241                 break;
 242         case USB_SPEED_FULL:
 243                 usbspd = FSMODE;
 244                 break;
 245         case USB_SPEED_HIGH:
 246                 usbspd = HSMODE;
 247                 break;
 248         default:
 249                 err("unknown speed");
 250                 break;
 251         }
 252
 253         return usbspd;
 254 }
 255
 256 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
 257 {
 258         int idx;
 259
 260         idx = address / 32;
 261         r8a66597->child_connect_map[idx] |= 1 << (address % 32);
 262 }
 263
 264 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
 265 {
 266         int idx;
 267
 268         idx = address / 32;
 269         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
 270 }
 271
 272 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
 273 {
 274         u16 pipenum = pipe->info.pipenum;
 275         unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
 276         unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
 277         unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
 278
 279         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
 280                 dma_ch = R8A66597_PIPE_NO_DMA;
 281
 282         pipe->fifoaddr = fifoaddr[dma_ch];
 283         pipe->fifosel = fifosel[dma_ch];
 284         pipe->fifoctr = fifoctr[dma_ch];
 285
 286         if (pipenum == 0)
 287                 pipe->pipectr = DCPCTR;
 288         else
 289                 pipe->pipectr = get_pipectr_addr(pipenum);
 290
 291         if (check_bulk_or_isoc(pipenum)) {
 292                 pipe->pipetre = get_pipetre_addr(pipenum);
 293                 pipe->pipetrn = get_pipetrn_addr(pipenum);
 294         } else {
 295                 pipe->pipetre = 0;
 296                 pipe->pipetrn = 0;
 297         }
 298 }
 299
 300 static struct r8a66597_device *
 301 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
 302 {
 303         if (usb_pipedevice(urb->pipe) == 0)
 304                 return &r8a66597->device0;
 305
 306         return dev_get_drvdata(&urb->dev->dev);
 307 }
 308
 309 static int make_r8a66597_device(struct r8a66597 *r8a66597,
 310                                 struct urb *urb, u8 addr)
 311 {
 312         struct r8a66597_device *dev;
 313         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 314
 315         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
 316         if (dev == NULL)
 317                 return -ENOMEM;
 318
 319         dev_set_drvdata(&urb->dev->dev, dev);
 320         dev->udev = urb->dev;
 321         dev->address = addr;
 322         dev->usb_address = usb_address;
 323         dev->state = USB_STATE_ADDRESS;
 324         dev->ep_in_toggle = 0;
 325         dev->ep_out_toggle = 0;
 326         INIT_LIST_HEAD(&dev->device_list);
 327         list_add_tail(&dev->device_list, &r8a66597->child_device);
 328
 329         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
 330         if (!is_child_device(urb->dev->devpath))
 331                 r8a66597->root_hub[dev->root_port].dev = dev;
 332
 333         set_devadd_reg(r8a66597, dev->address,
 334                        get_r8a66597_usb_speed(urb->dev->speed),
 335                        get_parent_r8a66597_address(r8a66597, urb->dev),
 336                        dev->hub_port, dev->root_port);
 337
 338         return 0;
 339 }
 340
 341 /* this function must be called with interrupt disabled */
 342 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
 343 {
 344         u8 addr;        /* R8A66597's address */
 345         struct r8a66597_device *dev;
 346
 347         if (is_hub_limit(urb->dev->devpath)) {
 348                 err("Externel hub limit reached.");
 349                 return 0;
 350         }
 351
 352         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 353         if (dev && dev->state >= USB_STATE_ADDRESS)
 354                 return dev->address;
 355
 356         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
 357                 if (r8a66597->address_map & (1 << addr))
 358                         continue;
 359
 360                 dbg("alloc_address: r8a66597_addr=%d", addr);
 361                 r8a66597->address_map |= 1 << addr;
 362
 363                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
 364                         return 0;
 365
 366                 return addr;
 367         }
 368
 369         err("cannot communicate with a USB device more than 10.(%x)",
 370             r8a66597->address_map);
 371
 372         return 0;
 373 }
 374
 375 /* this function must be called with interrupt disabled */
 376 static void free_usb_address(struct r8a66597 *r8a66597,
 377                              struct r8a66597_device *dev)
 378 {
 379         int port;
 380
 381         if (!dev)
 382                 return;
 383
 384         dbg("free_addr: addr=%d", dev->address);
 385
 386         dev->state = USB_STATE_DEFAULT;
 387         r8a66597->address_map &= ~(1 << dev->address);
 388         dev->address = 0;
 389         dev_set_drvdata(&dev->udev->dev, NULL);
 390         list_del(&dev->device_list);
 391         kfree(dev);
 392
 393         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
 394                 if (r8a66597->root_hub[port].dev == dev) {
 395                         r8a66597->root_hub[port].dev = NULL;
 396                         break;
 397                 }
 398         }
 399 }
 400
 401 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 402                               u16 mask, u16 loop)
 403 {
 404         u16 tmp;
 405         int i = 0;
 406
 407         do {
 408                 tmp = r8a66597_read(r8a66597, reg);
 409                 if (i++ > 1000000) {
 410                         err("register%lx, loop %x is timeout", reg, loop);
 411                         break;
 412                 }
 413                 ndelay(1);
 414         } while ((tmp & mask) != loop);
 415 }
 416
 417 /* this function must be called with interrupt disabled */
 418 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 419 {
 420         u16 tmp;
 421
 422         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 423         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
 424                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 425         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
 426 }
 427
 428 /* this function must be called with interrupt disabled */
 429 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 430 {
 431         u16 tmp;
 432
 433         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 434         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
 435                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
 436         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 437         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
 438 }
 439
 440 /* this function must be called with interrupt disabled */
 441 static void clear_all_buffer(struct r8a66597 *r8a66597,
 442                              struct r8a66597_pipe *pipe)
 443 {
 444         u16 tmp;
 445
 446         if (!pipe || pipe->info.pipenum == 0)
 447                 return;
 448
 449         pipe_stop(r8a66597, pipe);
 450         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
 451         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 452         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 453         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 454         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
 455 }
 456
 457 /* this function must be called with interrupt disabled */
 458 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
 459                                  struct r8a66597_pipe *pipe, int toggle)
 460 {
 461         if (toggle)
 462                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
 463         else
 464                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
 465 }
 466
 467 /* this function must be called with interrupt disabled */
 468 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
 469 {
 470         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 471         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 472 }
 473
 474 /* this function must be called with interrupt disabled */
 475 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
 476                                          struct r8a66597_pipe *pipe)
 477 {
 478         cfifo_change(r8a66597, 0);
 479         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
 480         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
 481
 482         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
 483                       pipe->fifosel);
 484         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
 485 }
 486
 487 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
 488 {
 489         struct r8a66597_pipe *pipe = hep->hcpriv;
 490
 491         if (usb_pipeendpoint(urb->pipe) == 0)
 492                 return 0;
 493         else
 494                 return pipe->info.pipenum;
 495 }
 496
 497 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
 498 {
 499         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 500
 501         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
 502 }
 503
 504 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
 505                                           int urb_pipe)
 506 {
 507         if (!dev)
 508                 return NULL;
 509
 510         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
 511 }
 512
 513 /* this function must be called with interrupt disabled */
 514 static void pipe_toggle_set(struct r8a66597 *r8a66597,
 515                             struct r8a66597_pipe *pipe,
 516                             struct urb *urb, int set)
 517 {
 518         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 519         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 520         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 521
 522         if (!toggle)
 523                 return;
 524
 525         if (set)
 526                 *toggle |= 1 << endpoint;
 527         else
 528                 *toggle &= ~(1 << endpoint);
 529 }
 530
 531 /* this function must be called with interrupt disabled */
 532 static void pipe_toggle_save(struct r8a66597 *r8a66597,
 533                              struct r8a66597_pipe *pipe,
 534                              struct urb *urb)
 535 {
 536         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
 537                 pipe_toggle_set(r8a66597, pipe, urb, 1);
 538         else
 539                 pipe_toggle_set(r8a66597, pipe, urb, 0);
 540 }
 541
 542 /* this function must be called with interrupt disabled */
 543 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
 544                                 struct r8a66597_pipe *pipe,
 545                                 struct urb *urb)
 546 {
 547         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 548         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 549         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 550
 551         if (!toggle)
 552                 return;
 553
 554         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
 555 }
 556
 557 /* this function must be called with interrupt disabled */
 558 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 559                                 struct r8a66597_pipe_info *info)
 560 {
 561         u16 val = 0;
 562
 563         if (info->pipenum == 0)
 564                 return;
 565
 566         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 567         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 568         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
 569         if (!info->dir_in)
 570                 val |= R8A66597_DIR;
 571         if (info->type == R8A66597_BULK && info->dir_in)
 572                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
 573         val |= info->type | info->epnum;
 574         r8a66597_write(r8a66597, val, PIPECFG);
 575
 576         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
 577                        PIPEBUF);
 578         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
 579                        PIPEMAXP);
 580         if (info->interval)
 581                 info->interval--;
 582         r8a66597_write(r8a66597, info->interval, PIPEPERI);
 583 }
 584
 585
 586
 587 /* this function must be called with interrupt disabled */
 588 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 589 {
 590         struct r8a66597_pipe_info *info;
 591         struct urb *urb = td->urb;
 592
 593         if (td->pipenum > 0) {
 594                 info = &td->pipe->info;
 595                 cfifo_change(r8a66597, 0);
 596                 pipe_buffer_setting(r8a66597, info);
 597
 598                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 599                                    usb_pipeout(urb->pipe)) &&
 600                     !usb_pipecontrol(urb->pipe)) {
 601                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
 602                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
 603                         clear_all_buffer(r8a66597, td->pipe);
 604                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 605                                       usb_pipeout(urb->pipe), 1);
 606                 }
 607                 pipe_toggle_restore(r8a66597, td->pipe, urb);
 608         }
 609 }
 610
 611 /* this function must be called with interrupt disabled */
 612 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
 613                              struct usb_endpoint_descriptor *ep)
 614 {
 615         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 616
 617         memset(array, 0, sizeof(array));
 618         switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
 619         case USB_ENDPOINT_XFER_BULK:
 620                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 621                         array[i++] = 4;
 622                 else {
 623                         array[i++] = 3;
 624                         array[i++] = 5;
 625                 }
 626                 break;
 627         case USB_ENDPOINT_XFER_INT:
 628                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
 629                         array[i++] = 6;
 630                         array[i++] = 7;
 631                         array[i++] = 8;
 632                 } else
 633                         array[i++] = 9;
 634                 break;
 635         case USB_ENDPOINT_XFER_ISOC:
 636                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 637                         array[i++] = 2;
 638                 else
 639                         array[i++] = 1;
 640                 break;
 641         default:
 642                 err("Illegal type");
 643                 return 0;
 644         }
 645
 646         i = 1;
 647         min = array[0];
 648         while (array[i] != 0) {
 649                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
 650                         min = array[i];
 651                 i++;
 652         }
 653
 654         return min;
 655 }
 656
 657 static u16 get_r8a66597_type(__u8 type)
 658 {
 659         u16 r8a66597_type;
 660
 661         switch (type) {
 662         case USB_ENDPOINT_XFER_BULK:
 663                 r8a66597_type = R8A66597_BULK;
 664                 break;
 665         case USB_ENDPOINT_XFER_INT:
 666                 r8a66597_type = R8A66597_INT;
 667                 break;
 668         case USB_ENDPOINT_XFER_ISOC:
 669                 r8a66597_type = R8A66597_ISO;
 670                 break;
 671         default:
 672                 err("Illegal type");
 673                 r8a66597_type = 0x0000;
 674                 break;
 675         }
 676
 677         return r8a66597_type;
 678 }
 679
 680 static u16 get_bufnum(u16 pipenum)
 681 {
 682         u16 bufnum = 0;
 683
 684         if (pipenum == 0)
 685                 bufnum = 0;
 686         else if (check_bulk_or_isoc(pipenum))
 687                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
 688         else if (check_interrupt(pipenum))
 689                 bufnum = 4 + (pipenum - 6);
 690         else
 691                 err("Illegal pipenum (%d)", pipenum);
 692
 693         return bufnum;
 694 }
 695
 696 static u16 get_buf_bsize(u16 pipenum)
 697 {
 698         u16 buf_bsize = 0;
 699
 700         if (pipenum == 0)
 701                 buf_bsize = 3;
 702         else if (check_bulk_or_isoc(pipenum))
 703                 buf_bsize = R8A66597_BUF_BSIZE - 1;
 704         else if (check_interrupt(pipenum))
 705                 buf_bsize = 0;
 706         else
 707                 err("Illegal pipenum (%d)", pipenum);
 708
 709         return buf_bsize;
 710 }
 711
 712 /* this function must be called with interrupt disabled */
 713 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
 714                                      struct r8a66597_device *dev,
 715                                      struct r8a66597_pipe *pipe,
 716                                      struct urb *urb)
 717 {
 718         int i;
 719         struct r8a66597_pipe_info *info = &pipe->info;
 720
 721         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
 722                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
 723                         if ((r8a66597->dma_map & (1 << i)) != 0)
 724                                 continue;
 725
 726                         info("address %d, EndpointAddress 0x%02x use DMA FIFO",
 727                              usb_pipedevice(urb->pipe),
 728                              info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
 729                                             : info->epnum);
 730
 731                         r8a66597->dma_map |= 1 << i;
 732                         dev->dma_map |= 1 << i;
 733                         set_pipe_reg_addr(pipe, i);
 734
 735                         cfifo_change(r8a66597, 0);
 736                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
 737                                       MBW | CURPIPE, pipe->fifosel);
 738
 739                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
 740                                           pipe->info.pipenum);
 741                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
 742                         break;
 743                 }
 744         }
 745 }
 746
 747 /* this function must be called with interrupt disabled */
 748 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 749                                  struct usb_host_endpoint *hep,
 750                                  struct r8a66597_pipe_info *info)
 751 {
 752         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 753         struct r8a66597_pipe *pipe = hep->hcpriv;
 754
 755         dbg("enable_pipe:");
 756
 757         pipe->info = *info;
 758         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
 759         r8a66597->pipe_cnt[pipe->info.pipenum]++;
 760         dev->pipe_cnt[pipe->info.pipenum]++;
 761
 762         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 763 }
 764
 765 /* this function must be called with interrupt disabled */
 766 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 767 {
 768         struct r8a66597_td *td, *next;
 769         struct urb *urb;
 770         struct list_head *list = &r8a66597->pipe_queue[pipenum];
 771
 772         if (list_empty(list))
 773                 return;
 774
 775         list_for_each_entry_safe(td, next, list, queue) {
 776                 if (!td)
 777                         continue;
 778                 if (td->address != address)
 779                         continue;
 780
 781                 urb = td->urb;
 782                 list_del(&td->queue);
 783                 kfree(td);
 784
 785                 if (urb) {
 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                                         -ENODEV);
 792                         spin_lock(&r8a66597->lock);
 793                 }
 794                 break;
 795         }
 796 }
 797
 798 /* this function must be called with interrupt disabled */
 799 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
 800                                       struct r8a66597_device *dev)
 801 {
 802         int check_ep0 = 0;
 803         u16 pipenum;
 804
 805         if (!dev)
 806                 return;
 807
 808         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
 809                 if (!dev->pipe_cnt[pipenum])
 810                         continue;
 811
 812                 if (!check_ep0) {
 813                         check_ep0 = 1;
 814                         force_dequeue(r8a66597, 0, dev->address);
 815                 }
 816
 817                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
 818                 dev->pipe_cnt[pipenum] = 0;
 819                 force_dequeue(r8a66597, pipenum, dev->address);
 820         }
 821
 822         dbg("disable_pipe");
 823
 824         r8a66597->dma_map &= ~(dev->dma_map);
 825         dev->dma_map = 0;
 826 }
 827
 828 /* this function must be called with interrupt disabled */
 829 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
 830                            struct usb_host_endpoint *hep,
 831                            struct usb_endpoint_descriptor *ep)
 832 {
 833         struct r8a66597_pipe_info info;
 834
 835         info.pipenum = get_empty_pipenum(r8a66597, ep);
 836         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
 837         info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 838         info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
 839         info.type = get_r8a66597_type(ep->bmAttributes
 840                                       & USB_ENDPOINT_XFERTYPE_MASK);
 841         info.bufnum = get_bufnum(info.pipenum);
 842         info.buf_bsize = get_buf_bsize(info.pipenum);
 843         info.interval = ep->bInterval;
 844         if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 845                 info.dir_in = 1;
 846         else
 847                 info.dir_in = 0;
 848
 849         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
 850 }
 851
 852 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 853 {
 854         struct r8a66597_device *dev;
 855
 856         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 857         dev->state = USB_STATE_CONFIGURED;
 858 }
 859
 860 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
 861                             u16 pipenum)
 862 {
 863         if (pipenum == 0 && usb_pipeout(urb->pipe))
 864                 enable_irq_empty(r8a66597, pipenum);
 865         else
 866                 enable_irq_ready(r8a66597, pipenum);
 867
 868         if (!usb_pipeisoc(urb->pipe))
 869                 enable_irq_nrdy(r8a66597, pipenum);
 870 }
 871
 872 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 873 {
 874         disable_irq_ready(r8a66597, pipenum);
 875         disable_irq_nrdy(r8a66597, pipenum);
 876 }
 877
 878 /* this function must be called with interrupt disabled */
 879 static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
 880 {
 881         r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
 882                                          | (1 << USB_PORT_FEAT_C_CONNECTION);
 883         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
 884         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
 885 }
 886
 887 /* this function must be called with interrupt disabled */
 888 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
 889 {
 890         u16 speed = get_rh_usb_speed(r8a66597, port);
 891         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
 892
 893         if (speed == HSMODE)
 894                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
 895         else if (speed == LSMODE)
 896                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
 897
 898         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
 899         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
 900 }
 901
 902 /* this function must be called with interrupt disabled */
 903 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
 904 {
 905         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
 906
 907         r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
 908         r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
 909
 910         disable_r8a66597_pipe_all(r8a66597, dev);
 911         free_usb_address(r8a66597, dev);
 912
 913         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 914 }
 915
 916 /* this function must be called with interrupt disabled */
 917 static void prepare_setup_packet(struct r8a66597 *r8a66597,
 918                                  struct r8a66597_td *td)
 919 {
 920         int i;
 921         u16 *p = (u16 *)td->urb->setup_packet;
 922         unsigned long setup_addr = USBREQ;
 923
 924         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
 925                        DCPMAXP);
 926         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 927
 928         for (i = 0; i < 4; i++) {
 929                 r8a66597_write(r8a66597, cpu_to_le16(p[i]), setup_addr);
 930                 setup_addr += 2;
 931         }
 932         r8a66597_write(r8a66597, SUREQ, DCPCTR);
 933 }
 934
 935 /* this function must be called with interrupt disabled */
 936 static void prepare_packet_read(struct r8a66597 *r8a66597,
 937                                 struct r8a66597_td *td)
 938 {
 939         struct urb *urb = td->urb;
 940
 941         if (usb_pipecontrol(urb->pipe)) {
 942                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 943                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 944                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 945                 if (urb->actual_length == 0) {
 946                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
 947                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 948                 }
 949                 pipe_irq_disable(r8a66597, td->pipenum);
 950                 pipe_start(r8a66597, td->pipe);
 951                 pipe_irq_enable(r8a66597, urb, td->pipenum);
 952         } else {
 953                 if (urb->actual_length == 0) {
 954                         pipe_irq_disable(r8a66597, td->pipenum);
 955                         pipe_setting(r8a66597, td);
 956                         pipe_stop(r8a66597, td->pipe);
 957                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
 958
 959                         if (td->pipe->pipetre) {
 960                                 r8a66597_write(r8a66597, TRCLR,
 961                                                 td->pipe->pipetre);
 962                                 r8a66597_write(r8a66597,
 963                                                 DIV_ROUND_UP
 964                                                   (urb->transfer_buffer_length,
 965                                                    td->maxpacket),
 966                                                 td->pipe->pipetrn);
 967                                 r8a66597_bset(r8a66597, TRENB,
 968                                                 td->pipe->pipetre);
 969                         }
 970
 971                         pipe_start(r8a66597, td->pipe);
 972                         pipe_irq_enable(r8a66597, urb, td->pipenum);
 973                 }
 974         }
 975 }
 976
 977 /* this function must be called with interrupt disabled */
 978 static void prepare_packet_write(struct r8a66597 *r8a66597,
 979                                  struct r8a66597_td *td)
 980 {
 981         u16 tmp;
 982         struct urb *urb = td->urb;
 983
 984         if (usb_pipecontrol(urb->pipe)) {
 985                 pipe_stop(r8a66597, td->pipe);
 986                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
 987                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
 988                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 989                 if (urb->actual_length == 0) {
 990                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
 991                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 992                 }
 993         } else {
 994                 if (urb->actual_length == 0)
 995                         pipe_setting(r8a66597, td);
 996                 if (td->pipe->pipetre)
 997                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
 998         }
 999         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1000
1001         fifo_change_from_pipe(r8a66597, td->pipe);
1002         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1003         if (unlikely((tmp & FRDY) == 0))
1004                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1005         else
1006                 packet_write(r8a66597, td->pipenum);
1007         pipe_start(r8a66597, td->pipe);
1008 }
1009
1010 /* this function must be called with interrupt disabled */
1011 static void prepare_status_packet(struct r8a66597 *r8a66597,
1012                                   struct r8a66597_td *td)
1013 {
1014         struct urb *urb = td->urb;
1015
1016         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1017         pipe_stop(r8a66597, td->pipe);
1018
1019         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1020                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1021                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1022                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1023                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1024                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1025                 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
1026                 enable_irq_empty(r8a66597, 0);
1027         } else {
1028                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1029                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1030                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1031                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1032                 enable_irq_ready(r8a66597, 0);
1033         }
1034         enable_irq_nrdy(r8a66597, 0);
1035         pipe_start(r8a66597, td->pipe);
1036 }
1037
1038 static int is_set_address(unsigned char *setup_packet)
1039 {
1040         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1041                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1042                 return 1;
1043         else
1044                 return 0;
1045 }
1046
1047 /* this function must be called with interrupt disabled */
1048 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1049 {
1050         BUG_ON(!td);
1051
1052         switch (td->type) {
1053         case USB_PID_SETUP:
1054                 if (is_set_address(td->urb->setup_packet)) {
1055                         td->set_address = 1;
1056                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1057                                                                      td->urb);
1058                         if (td->urb->setup_packet[2] == 0)
1059                                 return -EPIPE;
1060                 }
1061                 prepare_setup_packet(r8a66597, td);
1062                 break;
1063         case USB_PID_IN:
1064                 prepare_packet_read(r8a66597, td);
1065                 break;
1066         case USB_PID_OUT:
1067                 prepare_packet_write(r8a66597, td);
1068                 break;
1069         case USB_PID_ACK:
1070                 prepare_status_packet(r8a66597, td);
1071                 break;
1072         default:
1073                 err("invalid type.");
1074                 break;
1075         }
1076
1077         return 0;
1078 }
1079
1080 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1081 {
1082         if (usb_pipeisoc(urb->pipe)) {
1083                 if (urb->number_of_packets == td->iso_cnt)
1084                         return 1;
1085         }
1086
1087         /* control or bulk or interrupt */
1088         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1089             (td->short_packet) || (td->zero_packet))
1090                 return 1;
1091
1092         return 0;
1093 }
1094
1095 /* this function must be called with interrupt disabled */
1096 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1097 {
1098         unsigned long time;
1099
1100         BUG_ON(!td);
1101
1102         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1103             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1104                 r8a66597->timeout_map |= 1 << td->pipenum;
1105                 switch (usb_pipetype(td->urb->pipe)) {
1106                 case PIPE_INTERRUPT:
1107                 case PIPE_ISOCHRONOUS:
1108                         time = 30;
1109                         break;
1110                 default:
1111                         time = 300;
1112                         break;
1113                 }
1114
1115                 mod_timer(&r8a66597->td_timer[td->pipenum],
1116                           jiffies + msecs_to_jiffies(time));
1117         }
1118 }
1119
1120 /* this function must be called with interrupt disabled */
1121 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1122                 u16 pipenum, struct urb *urb, int status)
1123 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1124 {
1125         int restart = 0;
1126         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1127
1128         r8a66597->timeout_map &= ~(1 << pipenum);
1129
1130         if (likely(td)) {
1131                 if (td->set_address && (status != 0 || urb->unlinked))
1132                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1133
1134                 pipe_toggle_save(r8a66597, td->pipe, urb);
1135                 list_del(&td->queue);
1136                 kfree(td);
1137         }
1138
1139         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1140                 restart = 1;
1141
1142         if (likely(urb)) {
1143                 if (usb_pipeisoc(urb->pipe))
1144                         urb->start_frame = r8a66597_get_frame(hcd);
1145
1146                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1147                 spin_unlock(&r8a66597->lock);
1148                 usb_hcd_giveback_urb(hcd, urb, status);
1149                 spin_lock(&r8a66597->lock);
1150         }
1151
1152         if (restart) {
1153                 td = r8a66597_get_td(r8a66597, pipenum);
1154                 if (unlikely(!td))
1155                         return;
1156
1157                 start_transfer(r8a66597, td);
1158                 set_td_timer(r8a66597, td);
1159         }
1160 }
1161
1162 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1163 {
1164         u16 tmp;
1165         int rcv_len, bufsize, urb_len, size;
1166         u16 *buf;
1167         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1168         struct urb *urb;
1169         int finish = 0;
1170         int status = 0;
1171
1172         if (unlikely(!td))
1173                 return;
1174         urb = td->urb;
1175
1176         fifo_change_from_pipe(r8a66597, td->pipe);
1177         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1178         if (unlikely((tmp & FRDY) == 0)) {
1179                 pipe_stop(r8a66597, td->pipe);
1180                 pipe_irq_disable(r8a66597, pipenum);
1181                 err("in fifo not ready (%d)", pipenum);
1182                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1183                 return;
1184         }
1185
1186         /* prepare parameters */
1187         rcv_len = tmp & DTLN;
1188         if (usb_pipeisoc(urb->pipe)) {
1189                 buf = (u16 *)(urb->transfer_buffer +
1190                                 urb->iso_frame_desc[td->iso_cnt].offset);
1191                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1192         } else {
1193                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1194                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1195         }
1196         bufsize = min(urb_len, (int) td->maxpacket);
1197         if (rcv_len <= bufsize) {
1198                 size = rcv_len;
1199         } else {
1200                 size = bufsize;
1201                 status = -EOVERFLOW;
1202                 finish = 1;
1203         }
1204
1205         /* update parameters */
1206         urb->actual_length += size;
1207         if (rcv_len == 0)
1208                 td->zero_packet = 1;
1209         if (rcv_len < bufsize) {
1210                 td->short_packet = 1;
1211         }
1212         if (usb_pipeisoc(urb->pipe)) {
1213                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1214                 urb->iso_frame_desc[td->iso_cnt].status = status;
1215                 td->iso_cnt++;
1216                 finish = 0;
1217         }
1218
1219         /* check transfer finish */
1220         if (finish || check_transfer_finish(td, urb)) {
1221                 pipe_stop(r8a66597, td->pipe);
1222                 pipe_irq_disable(r8a66597, pipenum);
1223                 finish = 1;
1224         }
1225
1226         /* read fifo */
1227         if (urb->transfer_buffer) {
1228                 if (size == 0)
1229                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1230                 else
1231                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1232                                            buf, size);
1233         }
1234
1235         if (finish && pipenum != 0)
1236                 finish_request(r8a66597, td, pipenum, urb, status);
1237 }
1238
1239 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1240 {
1241         u16 tmp;
1242         int bufsize, size;
1243         u16 *buf;
1244         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1245         struct urb *urb;
1246
1247         if (unlikely(!td))
1248                 return;
1249         urb = td->urb;
1250
1251         fifo_change_from_pipe(r8a66597, td->pipe);
1252         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1253         if (unlikely((tmp & FRDY) == 0)) {
1254                 pipe_stop(r8a66597, td->pipe);
1255                 pipe_irq_disable(r8a66597, pipenum);
1256                 err("out write fifo not ready. (%d)", pipenum);
1257                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1258                 return;
1259         }
1260
1261         /* prepare parameters */
1262         bufsize = td->maxpacket;
1263         if (usb_pipeisoc(urb->pipe)) {
1264                 buf = (u16 *)(urb->transfer_buffer +
1265                                 urb->iso_frame_desc[td->iso_cnt].offset);
1266                 size = min(bufsize,
1267                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1268         } else {
1269                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1270                 size = min((int)bufsize,
1271                            urb->transfer_buffer_length - urb->actual_length);
1272         }
1273
1274         /* write fifo */
1275         if (pipenum > 0)
1276                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1277         if (urb->transfer_buffer) {
1278                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1279                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1280                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1281         }
1282
1283         /* update parameters */
1284         urb->actual_length += size;
1285         if (usb_pipeisoc(urb->pipe)) {
1286                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1287                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1288                 td->iso_cnt++;
1289         }
1290
1291         /* check transfer finish */
1292         if (check_transfer_finish(td, urb)) {
1293                 disable_irq_ready(r8a66597, pipenum);
1294                 enable_irq_empty(r8a66597, pipenum);
1295                 if (!usb_pipeisoc(urb->pipe))
1296                         enable_irq_nrdy(r8a66597, pipenum);
1297         } else
1298                 pipe_irq_enable(r8a66597, urb, pipenum);
1299 }
1300
1301
1302 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1303 {
1304         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1305         struct urb *urb;
1306         u8 finish = 0;
1307
1308         if (unlikely(!td))
1309                 return;
1310         urb = td->urb;
1311
1312         switch (td->type) {
1313         case USB_PID_IN:
1314         case USB_PID_OUT:
1315                 if (check_transfer_finish(td, urb))
1316                         td->type = USB_PID_ACK;
1317                 break;
1318         case USB_PID_SETUP:
1319                 if (urb->transfer_buffer_length == urb->actual_length)
1320                         td->type = USB_PID_ACK;
1321                 else if (usb_pipeout(urb->pipe))
1322                         td->type = USB_PID_OUT;
1323                 else
1324                         td->type = USB_PID_IN;
1325                 break;
1326         case USB_PID_ACK:
1327                 finish = 1;
1328                 break;
1329         }
1330
1331         if (finish || status != 0 || urb->unlinked)
1332                 finish_request(r8a66597, td, 0, urb, status);
1333         else
1334                 start_transfer(r8a66597, td);
1335 }
1336
1337 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1338 {
1339         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1340
1341         if (td) {
1342                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1343
1344                 if (pid == PID_NAK)
1345                         return -ECONNRESET;
1346                 else
1347                         return -EPIPE;
1348         }
1349         return 0;
1350 }
1351
1352 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1353 {
1354         u16 check;
1355         u16 pipenum;
1356         u16 mask;
1357         struct r8a66597_td *td;
1358
1359         mask = r8a66597_read(r8a66597, BRDYSTS)
1360                & r8a66597_read(r8a66597, BRDYENB);
1361         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1362         if (mask & BRDY0) {
1363                 td = r8a66597_get_td(r8a66597, 0);
1364                 if (td && td->type == USB_PID_IN)
1365                         packet_read(r8a66597, 0);
1366                 else
1367                         pipe_irq_disable(r8a66597, 0);
1368                 check_next_phase(r8a66597, 0);
1369         }
1370
1371         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1372                 check = 1 << pipenum;
1373                 if (mask & check) {
1374                         td = r8a66597_get_td(r8a66597, pipenum);
1375                         if (unlikely(!td))
1376                                 continue;
1377
1378                         if (td->type == USB_PID_IN)
1379                                 packet_read(r8a66597, pipenum);
1380                         else if (td->type == USB_PID_OUT)
1381                                 packet_write(r8a66597, pipenum);
1382                 }
1383         }
1384 }
1385
1386 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1387 {
1388         u16 tmp;
1389         u16 check;
1390         u16 pipenum;
1391         u16 mask;
1392         struct r8a66597_td *td;
1393
1394         mask = r8a66597_read(r8a66597, BEMPSTS)
1395                & r8a66597_read(r8a66597, BEMPENB);
1396         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1397         if (mask & BEMP0) {
1398                 cfifo_change(r8a66597, 0);
1399                 td = r8a66597_get_td(r8a66597, 0);
1400                 if (td && td->type != USB_PID_OUT)
1401                         disable_irq_empty(r8a66597, 0);
1402                 check_next_phase(r8a66597, 0);
1403         }
1404
1405         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1406                 check = 1 << pipenum;
1407                 if (mask &  check) {
1408                         struct r8a66597_td *td;
1409                         td = r8a66597_get_td(r8a66597, pipenum);
1410                         if (unlikely(!td))
1411                                 continue;
1412
1413                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1414                         if ((tmp & INBUFM) == 0) {
1415                                 disable_irq_empty(r8a66597, pipenum);
1416                                 pipe_irq_disable(r8a66597, pipenum);
1417                                 finish_request(r8a66597, td, pipenum, td->urb,
1418                                                 0);
1419                         }
1420                 }
1421         }
1422 }
1423
1424 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1425 {
1426         u16 check;
1427         u16 pipenum;
1428         u16 mask;
1429         int status;
1430
1431         mask = r8a66597_read(r8a66597, NRDYSTS)
1432                & r8a66597_read(r8a66597, NRDYENB);
1433         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1434         if (mask & NRDY0) {
1435                 cfifo_change(r8a66597, 0);
1436                 status = get_urb_error(r8a66597, 0);
1437                 pipe_irq_disable(r8a66597, 0);
1438                 check_next_phase(r8a66597, status);
1439         }
1440
1441         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1442                 check = 1 << pipenum;
1443                 if (mask & check) {
1444                         struct r8a66597_td *td;
1445                         td = r8a66597_get_td(r8a66597, pipenum);
1446                         if (unlikely(!td))
1447                                 continue;
1448
1449                         status = get_urb_error(r8a66597, pipenum);
1450                         pipe_irq_disable(r8a66597, pipenum);
1451                         pipe_stop(r8a66597, td->pipe);
1452                         finish_request(r8a66597, td, pipenum, td->urb, status);
1453                 }
1454         }
1455 }
1456
1457 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
1458 {
1459         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1460
1461         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1462         rh->scount = R8A66597_MAX_SAMPLING;
1463         mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
1464 }
1465
1466 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1467 {
1468         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1469         u16 intsts0, intsts1, intsts2;
1470         u16 intenb0, intenb1, intenb2;
1471         u16 mask0, mask1, mask2;
1472         int status;
1473
1474         spin_lock(&r8a66597->lock);
1475
1476         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1477         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1478         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1479         intenb0 = r8a66597_read(r8a66597, INTENB0);
1480         intenb1 = r8a66597_read(r8a66597, INTENB1);
1481         intenb2 = r8a66597_read(r8a66597, INTENB2);
1482
1483         mask2 = intsts2 & intenb2;
1484         mask1 = intsts1 & intenb1;
1485         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1486         if (mask2) {
1487                 if (mask2 & ATTCH) {
1488                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1489                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1490
1491                         /* start usb bus sampling */
1492                         start_root_hub_sampling(r8a66597, 1);
1493                 }
1494                 if (mask2 & DTCH) {
1495                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1496                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1497                         r8a66597_usb_disconnect(r8a66597, 1);
1498                 }
1499         }
1500
1501         if (mask1) {
1502                 if (mask1 & ATTCH) {
1503                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1504                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1505
1506                         /* start usb bus sampling */
1507                         start_root_hub_sampling(r8a66597, 0);
1508                 }
1509                 if (mask1 & DTCH) {
1510                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1511                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1512                         r8a66597_usb_disconnect(r8a66597, 0);
1513                 }
1514                 if (mask1 & SIGN) {
1515                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1516                         status = get_urb_error(r8a66597, 0);
1517                         check_next_phase(r8a66597, status);
1518                 }
1519                 if (mask1 & SACK) {
1520                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1521                         check_next_phase(r8a66597, 0);
1522                 }
1523         }
1524         if (mask0) {
1525                 if (mask0 & BRDY)
1526                         irq_pipe_ready(r8a66597);
1527                 if (mask0 & BEMP)
1528                         irq_pipe_empty(r8a66597);
1529                 if (mask0 & NRDY)
1530                         irq_pipe_nrdy(r8a66597);
1531         }
1532
1533         spin_unlock(&r8a66597->lock);
1534         return IRQ_HANDLED;
1535 }
1536
1537 /* this function must be called with interrupt disabled */
1538 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1539 {
1540         u16 tmp;
1541         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1542
1543         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1544                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1545
1546                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1547                 if ((tmp & USBRST) == USBRST) {
1548                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1549                                       dvstctr_reg);
1550                         mod_timer(&r8a66597->rh_timer,
1551                                   jiffies + msecs_to_jiffies(50));
1552                 } else
1553                         r8a66597_usb_connect(r8a66597, port);
1554         }
1555
1556         if (rh->scount > 0) {
1557                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1558                 if (tmp == rh->old_syssts) {
1559                         rh->scount--;
1560                         if (rh->scount == 0) {
1561                                 if (tmp == FS_JSTS) {
1562                                         r8a66597_bset(r8a66597, HSE,
1563                                                       get_syscfg_reg(port));
1564                                         r8a66597_usb_preconnect(r8a66597, port);
1565                                 } else if (tmp == LS_JSTS) {
1566                                         r8a66597_bclr(r8a66597, HSE,
1567                                                       get_syscfg_reg(port));
1568                                         r8a66597_usb_preconnect(r8a66597, port);
1569                                 } else if (tmp == SE0)
1570                                         r8a66597_bset(r8a66597, ATTCHE,
1571                                                       get_intenb_reg(port));
1572                         } else {
1573                                 mod_timer(&r8a66597->rh_timer,
1574                                           jiffies + msecs_to_jiffies(50));
1575                         }
1576                 } else {
1577                         rh->scount = R8A66597_MAX_SAMPLING;
1578                         rh->old_syssts = tmp;
1579                         mod_timer(&r8a66597->rh_timer,
1580                                   jiffies + msecs_to_jiffies(50));
1581                 }
1582         }
1583 }
1584
1585 static void r8a66597_td_timer(unsigned long _r8a66597)
1586 {
1587         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1588         unsigned long flags;
1589         u16 pipenum;
1590         struct r8a66597_td *td, *new_td = NULL;
1591         struct r8a66597_pipe *pipe;
1592
1593         spin_lock_irqsave(&r8a66597->lock, flags);
1594         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1595                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1596                         continue;
1597                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1598                         continue;
1599
1600                 td = r8a66597_get_td(r8a66597, pipenum);
1601                 if (!td) {
1602                         r8a66597->timeout_map &= ~(1 << pipenum);
1603                         continue;
1604                 }
1605
1606                 if (td->urb->actual_length) {
1607                         set_td_timer(r8a66597, td);
1608                         break;
1609                 }
1610
1611                 pipe = td->pipe;
1612                 pipe_stop(r8a66597, pipe);
1613
1614                 new_td = td;
1615                 do {
1616                         list_move_tail(&new_td->queue,
1617                                        &r8a66597->pipe_queue[pipenum]);
1618                         new_td = r8a66597_get_td(r8a66597, pipenum);
1619                         if (!new_td) {
1620                                 new_td = td;
1621                                 break;
1622                         }
1623                 } while (td != new_td && td->address == new_td->address);
1624
1625                 start_transfer(r8a66597, new_td);
1626
1627                 if (td == new_td)
1628                         r8a66597->timeout_map &= ~(1 << pipenum);
1629                 else
1630                         set_td_timer(r8a66597, new_td);
1631                 break;
1632         }
1633         spin_unlock_irqrestore(&r8a66597->lock, flags);
1634 }
1635
1636 static void r8a66597_timer(unsigned long _r8a66597)
1637 {
1638         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1639         unsigned long flags;
1640
1641         spin_lock_irqsave(&r8a66597->lock, flags);
1642
1643         r8a66597_root_hub_control(r8a66597, 0);
1644         r8a66597_root_hub_control(r8a66597, 1);
1645
1646         spin_unlock_irqrestore(&r8a66597->lock, flags);
1647 }
1648
1649 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1650 {
1651         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1652
1653         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1654             (urb->dev->state == USB_STATE_CONFIGURED))
1655                 return 1;
1656         else
1657                 return 0;
1658 }
1659
1660 static int r8a66597_start(struct usb_hcd *hcd)
1661 {
1662         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1663
1664         hcd->state = HC_STATE_RUNNING;
1665         return enable_controller(r8a66597);
1666 }
1667
1668 static void r8a66597_stop(struct usb_hcd *hcd)
1669 {
1670         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1671
1672         disable_controller(r8a66597);
1673 }
1674
1675 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1676 {
1677         unsigned int usb_address = usb_pipedevice(urb->pipe);
1678         u16 root_port, hub_port;
1679
1680         if (usb_address == 0) {
1681                 get_port_number(urb->dev->devpath,
1682                                 &root_port, &hub_port);
1683                 set_devadd_reg(r8a66597, 0,
1684                                get_r8a66597_usb_speed(urb->dev->speed),
1685                                get_parent_r8a66597_address(r8a66597, urb->dev),
1686                                hub_port, root_port);
1687         }
1688 }
1689
1690 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1691                                             struct urb *urb,
1692                                             struct usb_host_endpoint *hep)
1693 {
1694         struct r8a66597_td *td;
1695         u16 pipenum;
1696
1697         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1698         if (td == NULL)
1699                 return NULL;
1700
1701         pipenum = r8a66597_get_pipenum(urb, hep);
1702         td->pipenum = pipenum;
1703         td->pipe = hep->hcpriv;
1704         td->urb = urb;
1705         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1706         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1707                                       !usb_pipein(urb->pipe));
1708         if (usb_pipecontrol(urb->pipe))
1709                 td->type = USB_PID_SETUP;
1710         else if (usb_pipein(urb->pipe))
1711                 td->type = USB_PID_IN;
1712         else
1713                 td->type = USB_PID_OUT;
1714         INIT_LIST_HEAD(&td->queue);
1715
1716         return td;
1717 }
1718
1719 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1720                                 struct urb *urb,
1721                                 gfp_t mem_flags)
1722 {
1723         struct usb_host_endpoint *hep = urb->ep;
1724         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1725         struct r8a66597_td *td = NULL;
1726         int ret, request = 0;
1727         unsigned long flags;
1728
1729         spin_lock_irqsave(&r8a66597->lock, flags);
1730         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1731                 ret = -ENODEV;
1732                 goto error_not_linked;
1733         }
1734
1735         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1736         if (ret)
1737                 goto error_not_linked;
1738
1739         if (!hep->hcpriv) {
1740                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1741                                 GFP_ATOMIC);
1742                 if (!hep->hcpriv) {
1743                         ret = -ENOMEM;
1744                         goto error;
1745                 }
1746                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1747                 if (usb_pipeendpoint(urb->pipe))
1748                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1749         }
1750
1751         if (unlikely(check_pipe_config(r8a66597, urb)))
1752                 init_pipe_config(r8a66597, urb);
1753
1754         set_address_zero(r8a66597, urb);
1755         td = r8a66597_make_td(r8a66597, urb, hep);
1756         if (td == NULL) {
1757                 ret = -ENOMEM;
1758                 goto error;
1759         }
1760         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1761                 request = 1;
1762         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1763         urb->hcpriv = td;
1764
1765         if (request) {
1766                 ret = start_transfer(r8a66597, td);
1767                 if (ret < 0) {
1768                         list_del(&td->queue);
1769                         kfree(td);
1770                 }
1771         } else
1772                 set_td_timer(r8a66597, td);
1773
1774 error:
1775         if (ret)
1776                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1777 error_not_linked:
1778         spin_unlock_irqrestore(&r8a66597->lock, flags);
1779         return ret;
1780 }
1781
1782 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1783                 int status)
1784 {
1785         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1786         struct r8a66597_td *td;
1787         unsigned long flags;
1788         int rc;
1789
1790         spin_lock_irqsave(&r8a66597->lock, flags);
1791         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1792         if (rc)
1793                 goto done;
1794
1795         if (urb->hcpriv) {
1796                 td = urb->hcpriv;
1797                 pipe_stop(r8a66597, td->pipe);
1798                 pipe_irq_disable(r8a66597, td->pipenum);
1799                 disable_irq_empty(r8a66597, td->pipenum);
1800                 finish_request(r8a66597, td, td->pipenum, urb, status);
1801         }
1802  done:
1803         spin_unlock_irqrestore(&r8a66597->lock, flags);
1804         return rc;
1805 }
1806
1807 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1808                                       struct usb_host_endpoint *hep)
1809 {
1810         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1811         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1812         struct r8a66597_td *td;
1813         struct urb *urb = NULL;
1814         u16 pipenum;
1815         unsigned long flags;
1816
1817         if (pipe == NULL)
1818                 return;
1819         pipenum = pipe->info.pipenum;
1820
1821         if (pipenum == 0) {
1822                 kfree(hep->hcpriv);
1823                 hep->hcpriv = NULL;
1824                 return;
1825         }
1826
1827         spin_lock_irqsave(&r8a66597->lock, flags);
1828         pipe_stop(r8a66597, pipe);
1829         pipe_irq_disable(r8a66597, pipenum);
1830         disable_irq_empty(r8a66597, pipenum);
1831         td = r8a66597_get_td(r8a66597, pipenum);
1832         if (td)
1833                 urb = td->urb;
1834         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1835         kfree(hep->hcpriv);
1836         hep->hcpriv = NULL;
1837         spin_unlock_irqrestore(&r8a66597->lock, flags);
1838 }
1839
1840 static int r8a66597_get_frame(struct usb_hcd *hcd)
1841 {
1842         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1843         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1844 }
1845
1846 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1847 {
1848         int chix;
1849
1850         if (udev->state == USB_STATE_CONFIGURED &&
1851             udev->parent && udev->parent->devnum > 1 &&
1852             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1853                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1854
1855         for (chix = 0; chix < udev->maxchild; chix++) {
1856                 struct usb_device *childdev = udev->children[chix];
1857
1858                 if (childdev)
1859                         collect_usb_address_map(childdev, map);
1860         }
1861 }
1862
1863 /* this function must be called with interrupt disabled */
1864 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1865                                                    int addr)
1866 {
1867         struct r8a66597_device *dev;
1868         struct list_head *list = &r8a66597->child_device;
1869
1870         list_for_each_entry(dev, list, device_list) {
1871                 if (!dev)
1872                         continue;
1873                 if (dev->usb_address != addr)
1874                         continue;
1875
1876                 return dev;
1877         }
1878
1879         err("get_r8a66597_device fail.(%d)\n", addr);
1880         return NULL;
1881 }
1882
1883 static void update_usb_address_map(struct r8a66597 *r8a66597,
1884                                    struct usb_device *root_hub,
1885                                    unsigned long *map)
1886 {
1887         int i, j, addr;
1888         unsigned long diff;
1889         unsigned long flags;
1890
1891         for (i = 0; i < 4; i++) {
1892                 diff = r8a66597->child_connect_map[i] ^ map[i];
1893                 if (!diff)
1894                         continue;
1895
1896                 for (j = 0; j < 32; j++) {
1897                         if (!(diff & (1 << j)))
1898                                 continue;
1899
1900                         addr = i * 32 + j;
1901                         if (map[i] & (1 << j))
1902                                 set_child_connect_map(r8a66597, addr);
1903                         else {
1904                                 struct r8a66597_device *dev;
1905
1906                                 spin_lock_irqsave(&r8a66597->lock, flags);
1907                                 dev = get_r8a66597_device(r8a66597, addr);
1908                                 disable_r8a66597_pipe_all(r8a66597, dev);
1909                                 free_usb_address(r8a66597, dev);
1910                                 put_child_connect_map(r8a66597, addr);
1911                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
1912                         }
1913                 }
1914         }
1915 }
1916
1917 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
1918                                         struct usb_hcd *hcd)
1919 {
1920         struct usb_bus *bus;
1921         unsigned long now_map[4];
1922
1923         memset(now_map, 0, sizeof(now_map));
1924
1925         list_for_each_entry(bus, &usb_bus_list, bus_list) {
1926                 if (!bus->root_hub)
1927                         continue;
1928
1929                 if (bus->busnum != hcd->self.busnum)
1930                         continue;
1931
1932                 collect_usb_address_map(bus->root_hub, now_map);
1933                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
1934         }
1935 }
1936
1937 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
1938 {
1939         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1940         unsigned long flags;
1941         int i;
1942
1943         r8a66597_check_detect_child(r8a66597, hcd);
1944
1945         spin_lock_irqsave(&r8a66597->lock, flags);
1946
1947         *buf = 0;       /* initialize (no change) */
1948
1949         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
1950                 if (r8a66597->root_hub[i].port & 0xffff0000)
1951                         *buf |= 1 << (i + 1);
1952         }
1953
1954         spin_unlock_irqrestore(&r8a66597->lock, flags);
1955
1956         return (*buf != 0);
1957 }
1958
1959 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
1960                                     struct usb_hub_descriptor *desc)
1961 {
1962         desc->bDescriptorType = 0x29;
1963         desc->bHubContrCurrent = 0;
1964         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
1965         desc->bDescLength = 9;
1966         desc->bPwrOn2PwrGood = 0;
1967         desc->wHubCharacteristics = cpu_to_le16(0x0011);
1968         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
1969         desc->bitmap[1] = ~0;
1970 }
1971
1972 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1973                                 u16 wIndex, char *buf, u16 wLength)
1974 {
1975         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1976         int ret;
1977         int port = (wIndex & 0x00FF) - 1;
1978         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1979         unsigned long flags;
1980
1981         ret = 0;
1982
1983         spin_lock_irqsave(&r8a66597->lock, flags);
1984         switch (typeReq) {
1985         case ClearHubFeature:
1986         case SetHubFeature:
1987                 switch (wValue) {
1988                 case C_HUB_OVER_CURRENT:
1989                 case C_HUB_LOCAL_POWER:
1990                         break;
1991                 default:
1992                         goto error;
1993                 }
1994                 break;
1995         case ClearPortFeature:
1996                 if (wIndex > R8A66597_MAX_ROOT_HUB)
1997                         goto error;
1998                 if (wLength != 0)
1999                         goto error;
2000
2001                 switch (wValue) {
2002                 case USB_PORT_FEAT_ENABLE:
2003                         rh->port &= (1 << USB_PORT_FEAT_POWER);
2004                         break;
2005                 case USB_PORT_FEAT_SUSPEND:
2006                         break;
2007                 case USB_PORT_FEAT_POWER:
2008                         r8a66597_port_power(r8a66597, port, 0);
2009                         break;
2010                 case USB_PORT_FEAT_C_ENABLE:
2011                 case USB_PORT_FEAT_C_SUSPEND:
2012                 case USB_PORT_FEAT_C_CONNECTION:
2013                 case USB_PORT_FEAT_C_OVER_CURRENT:
2014                 case USB_PORT_FEAT_C_RESET:
2015                         break;
2016                 default:
2017                         goto error;
2018                 }
2019                 rh->port &= ~(1 << wValue);
2020                 break;
2021         case GetHubDescriptor:
2022                 r8a66597_hub_descriptor(r8a66597,
2023                                         (struct usb_hub_descriptor *)buf);
2024                 break;
2025         case GetHubStatus:
2026                 *buf = 0x00;
2027                 break;
2028         case GetPortStatus:
2029                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2030                         goto error;
2031                 *(u32 *)buf = cpu_to_le32(rh->port);
2032                 break;
2033         case SetPortFeature:
2034                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2035                         goto error;
2036                 if (wLength != 0)
2037                         goto error;
2038
2039                 switch (wValue) {
2040                 case USB_PORT_FEAT_SUSPEND:
2041                         break;
2042                 case USB_PORT_FEAT_POWER:
2043                         r8a66597_port_power(r8a66597, port, 1);
2044                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2045                         break;
2046                 case USB_PORT_FEAT_RESET: {
2047                         struct r8a66597_device *dev = rh->dev;
2048
2049                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2050
2051                         disable_r8a66597_pipe_all(r8a66597, dev);
2052                         free_usb_address(r8a66597, dev);
2053
2054                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2055                                       get_dvstctr_reg(port));
2056                         mod_timer(&r8a66597->rh_timer,
2057                                   jiffies + msecs_to_jiffies(50));
2058                         }
2059                         break;
2060                 default:
2061                         goto error;
2062                 }
2063                 rh->port |= 1 << wValue;
2064                 break;
2065         default:
2066 error:
2067                 ret = -EPIPE;
2068                 break;
2069         }
2070
2071         spin_unlock_irqrestore(&r8a66597->lock, flags);
2072         return ret;
2073 }
2074
2075 static struct hc_driver r8a66597_hc_driver = {
2076         .description =          hcd_name,
2077         .hcd_priv_size =        sizeof(struct r8a66597),
2078         .irq =                  r8a66597_irq,
2079
2080         /*
2081          * generic hardware linkage
2082          */
2083         .flags =                HCD_USB2,
2084
2085         .start =                r8a66597_start,
2086         .stop =                 r8a66597_stop,
2087
2088         /*
2089          * managing i/o requests and associated device resources
2090          */
2091         .urb_enqueue =          r8a66597_urb_enqueue,
2092         .urb_dequeue =          r8a66597_urb_dequeue,
2093         .endpoint_disable =     r8a66597_endpoint_disable,
2094
2095         /*
2096          * periodic schedule support
2097          */
2098         .get_frame_number =     r8a66597_get_frame,
2099
2100         /*
2101          * root hub support
2102          */
2103         .hub_status_data =      r8a66597_hub_status_data,
2104         .hub_control =          r8a66597_hub_control,
2105 };
2106
2107 #if defined(CONFIG_PM)
2108 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2109 {
2110         return 0;
2111 }
2112
2113 static int r8a66597_resume(struct platform_device *pdev)
2114 {
2115         return 0;
2116 }
2117 #else   /* if defined(CONFIG_PM) */
2118 #define r8a66597_suspend        NULL
2119 #define r8a66597_resume         NULL
2120 #endif
2121
2122 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2123 {
2124         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2125         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2126
2127         del_timer_sync(&r8a66597->rh_timer);
2128         usb_remove_hcd(hcd);
2129         iounmap((void *)r8a66597->reg);
2130         usb_put_hcd(hcd);
2131         return 0;
2132 }
2133
2134 #define resource_len(r) (((r)->end - (r)->start) + 1)
2135 static int __init r8a66597_probe(struct platform_device *pdev)
2136 {
2137         struct resource *res = NULL;
2138         int irq = -1;
2139         void __iomem *reg = NULL;
2140         struct usb_hcd *hcd = NULL;
2141         struct r8a66597 *r8a66597;
2142         int ret = 0;
2143         int i;
2144
2145         if (pdev->dev.dma_mask) {
2146                 ret = -EINVAL;
2147                 err("dma not support");
2148                 goto clean_up;
2149         }
2150
2151         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2152                                            (char *)hcd_name);
2153         if (!res) {
2154                 ret = -ENODEV;
2155                 err("platform_get_resource_byname error.");
2156                 goto clean_up;
2157         }
2158
2159         irq = platform_get_irq(pdev, 0);
2160         if (irq < 0) {
2161                 ret = -ENODEV;
2162                 err("platform_get_irq error.");
2163                 goto clean_up;
2164         }
2165
2166         reg = ioremap(res->start, resource_len(res));
2167         if (reg == NULL) {
2168                 ret = -ENOMEM;
2169                 err("ioremap error.");
2170                 goto clean_up;
2171         }
2172
2173         /* initialize hcd */
2174         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2175         if (!hcd) {
2176                 ret = -ENOMEM;
2177                 err("Failed to create hcd");
2178                 goto clean_up;
2179         }
2180         r8a66597 = hcd_to_r8a66597(hcd);
2181         memset(r8a66597, 0, sizeof(struct r8a66597));
2182         dev_set_drvdata(&pdev->dev, r8a66597);
2183
2184         spin_lock_init(&r8a66597->lock);
2185         init_timer(&r8a66597->rh_timer);
2186         r8a66597->rh_timer.function = r8a66597_timer;
2187         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2188         r8a66597->reg = (unsigned long)reg;
2189
2190         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2191                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2192                 init_timer(&r8a66597->td_timer[i]);
2193                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2194                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2195         }
2196         INIT_LIST_HEAD(&r8a66597->child_device);
2197
2198         hcd->rsrc_start = res->start;
2199         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
2200         if (ret != 0) {
2201                 err("Failed to add hcd");
2202                 goto clean_up;
2203         }
2204
2205         return 0;
2206
2207 clean_up:
2208         if (reg)
2209                 iounmap(reg);
2210
2211         return ret;
2212 }
2213
2214 static struct platform_driver r8a66597_driver = {
2215         .probe =        r8a66597_probe,
2216         .remove =       r8a66597_remove,
2217         .suspend =      r8a66597_suspend,
2218         .resume =       r8a66597_resume,
2219         .driver         = {
2220                 .name = (char *) hcd_name,
2221                 .owner  = THIS_MODULE,
2222         },
2223 };
2224
2225 static int __init r8a66597_init(void)
2226 {
2227         if (usb_disabled())
2228                 return -ENODEV;
2229
2230         info("driver %s, %s", hcd_name, DRIVER_VERSION);
2231         return platform_driver_register(&r8a66597_driver);
2232 }
2233 module_init(r8a66597_init);
2234
2235 static void __exit r8a66597_cleanup(void)
2236 {
2237         platform_driver_unregister(&r8a66597_driver);
2238 }
2239 module_exit(r8a66597_cleanup);
2240