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

   1 /*
   2  * R8A66597 HCD (Host Controller Driver)
   3  *
   4  * Copyright (C) 2006-2007 Renesas Solutions Corp.
   5  * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
   6  * Portions Copyright (C) 2004-2005 David Brownell
   7  * Portions Copyright (C) 1999 Roman Weissgaerber
   8  *
   9  * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; version 2 of the License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23  *
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/kernel.h>
  28 #include <linux/sched.h>
  29 #include <linux/smp_lock.h>
  30 #include <linux/errno.h>
  31 #include <linux/init.h>
  32 #include <linux/timer.h>
  33 #include <linux/delay.h>
  34 #include <linux/list.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/usb.h>
  37 #include <linux/platform_device.h>
  38 #include <linux/io.h>
  39 #include <linux/irq.h>
  40
  41 #include "../core/hcd.h"
  42 #include "r8a66597.h"
  43
  44 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
  45 MODULE_LICENSE("GPL");
  46 MODULE_AUTHOR("Yoshihiro Shimoda");
  47 MODULE_ALIAS("platform:r8a66597_hcd");
  48
  49 #define DRIVER_VERSION  "10 Apr 2008"
  50
  51 static const char hcd_name[] = "r8a66597_hcd";
  52
  53 /* module parameters */
  54 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  55 static unsigned short clock = XTAL12;
  56 module_param(clock, ushort, 0644);
  57 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
  58                 "(default=0)");
  59 #endif
  60
  61 static unsigned short vif = LDRV;
  62 module_param(vif, ushort, 0644);
  63 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
  64
  65 static unsigned short endian;
  66 module_param(endian, ushort, 0644);
  67 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
  68
  69 static unsigned short irq_sense = INTL;
  70 module_param(irq_sense, ushort, 0644);
  71 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
  72                 "(default=32)");
  73
  74 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
  75 static int r8a66597_get_frame(struct usb_hcd *hcd);
  76
  77 /* this function must be called with interrupt disabled */
  78 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  79                             unsigned long reg)
  80 {
  81         u16 tmp;
  82
  83         tmp = r8a66597_read(r8a66597, INTENB0);
  84         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  85         r8a66597_bset(r8a66597, 1 << pipenum, reg);
  86         r8a66597_write(r8a66597, tmp, INTENB0);
  87 }
  88
  89 /* this function must be called with interrupt disabled */
  90 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  91                              unsigned long reg)
  92 {
  93         u16 tmp;
  94
  95         tmp = r8a66597_read(r8a66597, INTENB0);
  96         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  97         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
  98         r8a66597_write(r8a66597, tmp, INTENB0);
  99 }
 100
 101 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
 102                            u16 usbspd, u8 upphub, u8 hubport, int port)
 103 {
 104         u16 val;
 105         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
 106
 107         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
 108         r8a66597_write(r8a66597, val, devadd_reg);
 109 }
 110
 111 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
 112 {
 113         u16 tmp;
 114         int i = 0;
 115
 116 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 117         do {
 118                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
 119                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 120                 if (i++ > 1000) {
 121                         err("register access fail.");
 122                         return -ENXIO;
 123                 }
 124         } while ((tmp & SCKE) != SCKE);
 125         r8a66597_write(r8a66597, 0x04, 0x02);
 126 #else
 127         do {
 128                 r8a66597_write(r8a66597, USBE, SYSCFG0);
 129                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 130                 if (i++ > 1000) {
 131                         err("register access fail.");
 132                         return -ENXIO;
 133                 }
 134         } while ((tmp & USBE) != USBE);
 135         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 136         r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
 137
 138         i = 0;
 139         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 140         do {
 141                 msleep(1);
 142                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 143                 if (i++ > 500) {
 144                         err("register access fail.");
 145                         return -ENXIO;
 146                 }
 147         } while ((tmp & SCKE) != SCKE);
 148 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 149
 150         return 0;
 151 }
 152
 153 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 154 {
 155         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 156         udelay(1);
 157 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 158         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 159         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 160         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 161 #endif
 162 }
 163
 164 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 165 {
 166         u16 val;
 167
 168         val = port ? DRPD : DCFM | DRPD;
 169         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 170         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 171
 172         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 173         r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
 174         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 175 }
 176
 177 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 178 {
 179         u16 val, tmp;
 180
 181         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 182         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 183
 184         r8a66597_port_power(r8a66597, port, 0);
 185
 186         do {
 187                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 188                 udelay(640);
 189         } while (tmp == EDGESTS);
 190
 191         val = port ? DRPD : DCFM | DRPD;
 192         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 193         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 194 }
 195
 196 static int enable_controller(struct r8a66597 *r8a66597)
 197 {
 198         int ret, port;
 199
 200         ret = r8a66597_clock_enable(r8a66597);
 201         if (ret < 0)
 202                 return ret;
 203
 204         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 205         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 206
 207         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
 208         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
 209         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
 210         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 211
 212         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 213         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 214         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 215         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 216
 217         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
 218
 219         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 220                 r8a66597_enable_port(r8a66597, port);
 221
 222         return 0;
 223 }
 224
 225 static void disable_controller(struct r8a66597 *r8a66597)
 226 {
 227         int port;
 228
 229         r8a66597_write(r8a66597, 0, INTENB0);
 230         r8a66597_write(r8a66597, 0, INTSTS0);
 231
 232         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 233                 r8a66597_disable_port(r8a66597, port);
 234
 235         r8a66597_clock_disable(r8a66597);
 236 }
 237
 238 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
 239                                        struct usb_device *udev)
 240 {
 241         struct r8a66597_device *dev;
 242
 243         if (udev->parent && udev->parent->devnum != 1)
 244                 udev = udev->parent;
 245
 246         dev = dev_get_drvdata(&udev->dev);
 247         if (dev)
 248                 return dev->address;
 249         else
 250                 return 0;
 251 }
 252
 253 static int is_child_device(char *devpath)
 254 {
 255         return (devpath[2] ? 1 : 0);
 256 }
 257
 258 static int is_hub_limit(char *devpath)
 259 {
 260         return ((strlen(devpath) >= 4) ? 1 : 0);
 261 }
 262
 263 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
 264 {
 265         if (root_port) {
 266                 *root_port = (devpath[0] & 0x0F) - 1;
 267                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
 268                         err("illegal root port number");
 269         }
 270         if (hub_port)
 271                 *hub_port = devpath[2] & 0x0F;
 272 }
 273
 274 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
 275 {
 276         u16 usbspd = 0;
 277
 278         switch (speed) {
 279         case USB_SPEED_LOW:
 280                 usbspd = LSMODE;
 281                 break;
 282         case USB_SPEED_FULL:
 283                 usbspd = FSMODE;
 284                 break;
 285         case USB_SPEED_HIGH:
 286                 usbspd = HSMODE;
 287                 break;
 288         default:
 289                 err("unknown speed");
 290                 break;
 291         }
 292
 293         return usbspd;
 294 }
 295
 296 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
 297 {
 298         int idx;
 299
 300         idx = address / 32;
 301         r8a66597->child_connect_map[idx] |= 1 << (address % 32);
 302 }
 303
 304 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
 305 {
 306         int idx;
 307
 308         idx = address / 32;
 309         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
 310 }
 311
 312 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
 313 {
 314         u16 pipenum = pipe->info.pipenum;
 315         unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
 316         unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
 317         unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
 318
 319         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
 320                 dma_ch = R8A66597_PIPE_NO_DMA;
 321
 322         pipe->fifoaddr = fifoaddr[dma_ch];
 323         pipe->fifosel = fifosel[dma_ch];
 324         pipe->fifoctr = fifoctr[dma_ch];
 325
 326         if (pipenum == 0)
 327                 pipe->pipectr = DCPCTR;
 328         else
 329                 pipe->pipectr = get_pipectr_addr(pipenum);
 330
 331         if (check_bulk_or_isoc(pipenum)) {
 332                 pipe->pipetre = get_pipetre_addr(pipenum);
 333                 pipe->pipetrn = get_pipetrn_addr(pipenum);
 334         } else {
 335                 pipe->pipetre = 0;
 336                 pipe->pipetrn = 0;
 337         }
 338 }
 339
 340 static struct r8a66597_device *
 341 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
 342 {
 343         if (usb_pipedevice(urb->pipe) == 0)
 344                 return &r8a66597->device0;
 345
 346         return dev_get_drvdata(&urb->dev->dev);
 347 }
 348
 349 static int make_r8a66597_device(struct r8a66597 *r8a66597,
 350                                 struct urb *urb, u8 addr)
 351 {
 352         struct r8a66597_device *dev;
 353         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 354
 355         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
 356         if (dev == NULL)
 357                 return -ENOMEM;
 358
 359         dev_set_drvdata(&urb->dev->dev, dev);
 360         dev->udev = urb->dev;
 361         dev->address = addr;
 362         dev->usb_address = usb_address;
 363         dev->state = USB_STATE_ADDRESS;
 364         dev->ep_in_toggle = 0;
 365         dev->ep_out_toggle = 0;
 366         INIT_LIST_HEAD(&dev->device_list);
 367         list_add_tail(&dev->device_list, &r8a66597->child_device);
 368
 369         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
 370         if (!is_child_device(urb->dev->devpath))
 371                 r8a66597->root_hub[dev->root_port].dev = dev;
 372
 373         set_devadd_reg(r8a66597, dev->address,
 374                        get_r8a66597_usb_speed(urb->dev->speed),
 375                        get_parent_r8a66597_address(r8a66597, urb->dev),
 376                        dev->hub_port, dev->root_port);
 377
 378         return 0;
 379 }
 380
 381 /* this function must be called with interrupt disabled */
 382 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
 383 {
 384         u8 addr;        /* R8A66597's address */
 385         struct r8a66597_device *dev;
 386
 387         if (is_hub_limit(urb->dev->devpath)) {
 388                 err("Externel hub limit reached.");
 389                 return 0;
 390         }
 391
 392         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 393         if (dev && dev->state >= USB_STATE_ADDRESS)
 394                 return dev->address;
 395
 396         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
 397                 if (r8a66597->address_map & (1 << addr))
 398                         continue;
 399
 400                 dbg("alloc_address: r8a66597_addr=%d", addr);
 401                 r8a66597->address_map |= 1 << addr;
 402
 403                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
 404                         return 0;
 405
 406                 return addr;
 407         }
 408
 409         err("cannot communicate with a USB device more than 10.(%x)",
 410             r8a66597->address_map);
 411
 412         return 0;
 413 }
 414
 415 /* this function must be called with interrupt disabled */
 416 static void free_usb_address(struct r8a66597 *r8a66597,
 417                              struct r8a66597_device *dev)
 418 {
 419         int port;
 420
 421         if (!dev)
 422                 return;
 423
 424         dbg("free_addr: addr=%d", dev->address);
 425
 426         dev->state = USB_STATE_DEFAULT;
 427         r8a66597->address_map &= ~(1 << dev->address);
 428         dev->address = 0;
 429         dev_set_drvdata(&dev->udev->dev, NULL);
 430         list_del(&dev->device_list);
 431         kfree(dev);
 432
 433         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
 434                 if (r8a66597->root_hub[port].dev == dev) {
 435                         r8a66597->root_hub[port].dev = NULL;
 436                         break;
 437                 }
 438         }
 439 }
 440
 441 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 442                               u16 mask, u16 loop)
 443 {
 444         u16 tmp;
 445         int i = 0;
 446
 447         do {
 448                 tmp = r8a66597_read(r8a66597, reg);
 449                 if (i++ > 1000000) {
 450                         err("register%lx, loop %x is timeout", reg, loop);
 451                         break;
 452                 }
 453                 ndelay(1);
 454         } while ((tmp & mask) != loop);
 455 }
 456
 457 /* this function must be called with interrupt disabled */
 458 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 459 {
 460         u16 tmp;
 461
 462         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 463         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
 464                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 465         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
 466 }
 467
 468 /* this function must be called with interrupt disabled */
 469 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 470 {
 471         u16 tmp;
 472
 473         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 474         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
 475                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
 476         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 477         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
 478 }
 479
 480 /* this function must be called with interrupt disabled */
 481 static void clear_all_buffer(struct r8a66597 *r8a66597,
 482                              struct r8a66597_pipe *pipe)
 483 {
 484         u16 tmp;
 485
 486         if (!pipe || pipe->info.pipenum == 0)
 487                 return;
 488
 489         pipe_stop(r8a66597, pipe);
 490         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
 491         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 492         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 493         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 494         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
 495 }
 496
 497 /* this function must be called with interrupt disabled */
 498 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
 499                                  struct r8a66597_pipe *pipe, int toggle)
 500 {
 501         if (toggle)
 502                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
 503         else
 504                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
 505 }
 506
 507 /* this function must be called with interrupt disabled */
 508 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
 509 {
 510         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 511         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 512 }
 513
 514 /* this function must be called with interrupt disabled */
 515 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
 516                                          struct r8a66597_pipe *pipe)
 517 {
 518         cfifo_change(r8a66597, 0);
 519         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
 520         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
 521
 522         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
 523                       pipe->fifosel);
 524         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
 525 }
 526
 527 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
 528 {
 529         struct r8a66597_pipe *pipe = hep->hcpriv;
 530
 531         if (usb_pipeendpoint(urb->pipe) == 0)
 532                 return 0;
 533         else
 534                 return pipe->info.pipenum;
 535 }
 536
 537 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
 538 {
 539         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 540
 541         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
 542 }
 543
 544 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
 545                                           int urb_pipe)
 546 {
 547         if (!dev)
 548                 return NULL;
 549
 550         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
 551 }
 552
 553 /* this function must be called with interrupt disabled */
 554 static void pipe_toggle_set(struct r8a66597 *r8a66597,
 555                             struct r8a66597_pipe *pipe,
 556                             struct urb *urb, int set)
 557 {
 558         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 559         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 560         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 561
 562         if (!toggle)
 563                 return;
 564
 565         if (set)
 566                 *toggle |= 1 << endpoint;
 567         else
 568                 *toggle &= ~(1 << endpoint);
 569 }
 570
 571 /* this function must be called with interrupt disabled */
 572 static void pipe_toggle_save(struct r8a66597 *r8a66597,
 573                              struct r8a66597_pipe *pipe,
 574                              struct urb *urb)
 575 {
 576         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
 577                 pipe_toggle_set(r8a66597, pipe, urb, 1);
 578         else
 579                 pipe_toggle_set(r8a66597, pipe, urb, 0);
 580 }
 581
 582 /* this function must be called with interrupt disabled */
 583 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
 584                                 struct r8a66597_pipe *pipe,
 585                                 struct urb *urb)
 586 {
 587         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 588         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 589         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 590
 591         if (!toggle)
 592                 return;
 593
 594         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
 595 }
 596
 597 /* this function must be called with interrupt disabled */
 598 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 599                                 struct r8a66597_pipe_info *info)
 600 {
 601         u16 val = 0;
 602
 603         if (info->pipenum == 0)
 604                 return;
 605
 606         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 607         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 608         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
 609         if (!info->dir_in)
 610                 val |= R8A66597_DIR;
 611         if (info->type == R8A66597_BULK && info->dir_in)
 612                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
 613         val |= info->type | info->epnum;
 614         r8a66597_write(r8a66597, val, PIPECFG);
 615
 616         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
 617                        PIPEBUF);
 618         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
 619                        PIPEMAXP);
 620         r8a66597_write(r8a66597, info->interval, PIPEPERI);
 621 }
 622
 623 /* this function must be called with interrupt disabled */
 624 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 625 {
 626         struct r8a66597_pipe_info *info;
 627         struct urb *urb = td->urb;
 628
 629         if (td->pipenum > 0) {
 630                 info = &td->pipe->info;
 631                 cfifo_change(r8a66597, 0);
 632                 pipe_buffer_setting(r8a66597, info);
 633
 634                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 635                                    usb_pipeout(urb->pipe)) &&
 636                     !usb_pipecontrol(urb->pipe)) {
 637                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
 638                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
 639                         clear_all_buffer(r8a66597, td->pipe);
 640                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 641                                       usb_pipeout(urb->pipe), 1);
 642                 }
 643                 pipe_toggle_restore(r8a66597, td->pipe, urb);
 644         }
 645 }
 646
 647 /* this function must be called with interrupt disabled */
 648 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
 649                              struct usb_endpoint_descriptor *ep)
 650 {
 651         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 652
 653         memset(array, 0, sizeof(array));
 654         switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
 655         case USB_ENDPOINT_XFER_BULK:
 656                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 657                         array[i++] = 4;
 658                 else {
 659                         array[i++] = 3;
 660                         array[i++] = 5;
 661                 }
 662                 break;
 663         case USB_ENDPOINT_XFER_INT:
 664                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
 665                         array[i++] = 6;
 666                         array[i++] = 7;
 667                         array[i++] = 8;
 668                 } else
 669                         array[i++] = 9;
 670                 break;
 671         case USB_ENDPOINT_XFER_ISOC:
 672                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 673                         array[i++] = 2;
 674                 else
 675                         array[i++] = 1;
 676                 break;
 677         default:
 678                 err("Illegal type");
 679                 return 0;
 680         }
 681
 682         i = 1;
 683         min = array[0];
 684         while (array[i] != 0) {
 685                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
 686                         min = array[i];
 687                 i++;
 688         }
 689
 690         return min;
 691 }
 692
 693 static u16 get_r8a66597_type(__u8 type)
 694 {
 695         u16 r8a66597_type;
 696
 697         switch (type) {
 698         case USB_ENDPOINT_XFER_BULK:
 699                 r8a66597_type = R8A66597_BULK;
 700                 break;
 701         case USB_ENDPOINT_XFER_INT:
 702                 r8a66597_type = R8A66597_INT;
 703                 break;
 704         case USB_ENDPOINT_XFER_ISOC:
 705                 r8a66597_type = R8A66597_ISO;
 706                 break;
 707         default:
 708                 err("Illegal type");
 709                 r8a66597_type = 0x0000;
 710                 break;
 711         }
 712
 713         return r8a66597_type;
 714 }
 715
 716 static u16 get_bufnum(u16 pipenum)
 717 {
 718         u16 bufnum = 0;
 719
 720         if (pipenum == 0)
 721                 bufnum = 0;
 722         else if (check_bulk_or_isoc(pipenum))
 723                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
 724         else if (check_interrupt(pipenum))
 725                 bufnum = 4 + (pipenum - 6);
 726         else
 727                 err("Illegal pipenum (%d)", pipenum);
 728
 729         return bufnum;
 730 }
 731
 732 static u16 get_buf_bsize(u16 pipenum)
 733 {
 734         u16 buf_bsize = 0;
 735
 736         if (pipenum == 0)
 737                 buf_bsize = 3;
 738         else if (check_bulk_or_isoc(pipenum))
 739                 buf_bsize = R8A66597_BUF_BSIZE - 1;
 740         else if (check_interrupt(pipenum))
 741                 buf_bsize = 0;
 742         else
 743                 err("Illegal pipenum (%d)", pipenum);
 744
 745         return buf_bsize;
 746 }
 747
 748 /* this function must be called with interrupt disabled */
 749 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
 750                                      struct r8a66597_device *dev,
 751                                      struct r8a66597_pipe *pipe,
 752                                      struct urb *urb)
 753 {
 754 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 755         int i;
 756         struct r8a66597_pipe_info *info = &pipe->info;
 757
 758         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
 759                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
 760                         if ((r8a66597->dma_map & (1 << i)) != 0)
 761                                 continue;
 762
 763                         info("address %d, EndpointAddress 0x%02x use DMA FIFO",
 764                              usb_pipedevice(urb->pipe),
 765                              info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
 766                                             : info->epnum);
 767
 768                         r8a66597->dma_map |= 1 << i;
 769                         dev->dma_map |= 1 << i;
 770                         set_pipe_reg_addr(pipe, i);
 771
 772                         cfifo_change(r8a66597, 0);
 773                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
 774                                       MBW | CURPIPE, pipe->fifosel);
 775
 776                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
 777                                           pipe->info.pipenum);
 778                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
 779                         break;
 780                 }
 781         }
 782 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 783 }
 784
 785 /* this function must be called with interrupt disabled */
 786 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 787                                  struct usb_host_endpoint *hep,
 788                                  struct r8a66597_pipe_info *info)
 789 {
 790         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 791         struct r8a66597_pipe *pipe = hep->hcpriv;
 792
 793         dbg("enable_pipe:");
 794
 795         pipe->info = *info;
 796         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
 797         r8a66597->pipe_cnt[pipe->info.pipenum]++;
 798         dev->pipe_cnt[pipe->info.pipenum]++;
 799
 800         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 801 }
 802
 803 /* this function must be called with interrupt disabled */
 804 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 805 {
 806         struct r8a66597_td *td, *next;
 807         struct urb *urb;
 808         struct list_head *list = &r8a66597->pipe_queue[pipenum];
 809
 810         if (list_empty(list))
 811                 return;
 812
 813         list_for_each_entry_safe(td, next, list, queue) {
 814                 if (!td)
 815                         continue;
 816                 if (td->address != address)
 817                         continue;
 818
 819                 urb = td->urb;
 820                 list_del(&td->queue);
 821                 kfree(td);
 822
 823                 if (urb) {
 824                         usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
 825                                         urb);
 826
 827                         spin_unlock(&r8a66597->lock);
 828                         usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
 829                                         -ENODEV);
 830                         spin_lock(&r8a66597->lock);
 831                 }
 832                 break;
 833         }
 834 }
 835
 836 /* this function must be called with interrupt disabled */
 837 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
 838                                       struct r8a66597_device *dev)
 839 {
 840         int check_ep0 = 0;
 841         u16 pipenum;
 842
 843         if (!dev)
 844                 return;
 845
 846         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
 847                 if (!dev->pipe_cnt[pipenum])
 848                         continue;
 849
 850                 if (!check_ep0) {
 851                         check_ep0 = 1;
 852                         force_dequeue(r8a66597, 0, dev->address);
 853                 }
 854
 855                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
 856                 dev->pipe_cnt[pipenum] = 0;
 857                 force_dequeue(r8a66597, pipenum, dev->address);
 858         }
 859
 860         dbg("disable_pipe");
 861
 862         r8a66597->dma_map &= ~(dev->dma_map);
 863         dev->dma_map = 0;
 864 }
 865
 866 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
 867 {
 868         __u8 i;
 869         unsigned long time = 1;
 870
 871         if (usb_pipeisoc(urb->pipe))
 872                 return 0;
 873
 874         if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
 875                 for (i = 0; i < (interval - 1); i++)
 876                         time *= 2;
 877                 time = time * 125 / 1000;       /* uSOF -> msec */
 878         } else {
 879                 time = interval;
 880         }
 881
 882         return time;
 883 }
 884
 885 /* this function must be called with interrupt disabled */
 886 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
 887                            struct usb_host_endpoint *hep,
 888                            struct usb_endpoint_descriptor *ep)
 889 {
 890         struct r8a66597_pipe_info info;
 891
 892         info.pipenum = get_empty_pipenum(r8a66597, ep);
 893         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
 894         info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 895         info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
 896         info.type = get_r8a66597_type(ep->bmAttributes
 897                                       & USB_ENDPOINT_XFERTYPE_MASK);
 898         info.bufnum = get_bufnum(info.pipenum);
 899         info.buf_bsize = get_buf_bsize(info.pipenum);
 900         if (info.type == R8A66597_BULK) {
 901                 info.interval = 0;
 902                 info.timer_interval = 0;
 903         } else {
 904                 if (ep->bInterval > IITV)
 905                         info.interval = IITV;
 906                 else
 907                         info.interval = ep->bInterval ? ep->bInterval - 1 : 0;
 908                 info.timer_interval = get_timer_interval(urb, ep->bInterval);
 909         }
 910         if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 911                 info.dir_in = 1;
 912         else
 913                 info.dir_in = 0;
 914
 915         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
 916 }
 917
 918 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 919 {
 920         struct r8a66597_device *dev;
 921
 922         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 923         dev->state = USB_STATE_CONFIGURED;
 924 }
 925
 926 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
 927                             u16 pipenum)
 928 {
 929         if (pipenum == 0 && usb_pipeout(urb->pipe))
 930                 enable_irq_empty(r8a66597, pipenum);
 931         else
 932                 enable_irq_ready(r8a66597, pipenum);
 933
 934         if (!usb_pipeisoc(urb->pipe))
 935                 enable_irq_nrdy(r8a66597, pipenum);
 936 }
 937
 938 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 939 {
 940         disable_irq_ready(r8a66597, pipenum);
 941         disable_irq_nrdy(r8a66597, pipenum);
 942 }
 943
 944 /* this function must be called with interrupt disabled */
 945 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
 946                                         u16 syssts)
 947 {
 948         if (syssts == SE0) {
 949                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 950                 return;
 951         }
 952
 953         if (syssts == FS_JSTS)
 954                 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 955         else if (syssts == LS_JSTS)
 956                 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 957
 958         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
 959         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
 960 }
 961
 962 /* this function must be called with interrupt disabled */
 963 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
 964 {
 965         u16 speed = get_rh_usb_speed(r8a66597, port);
 966         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
 967
 968         if (speed == HSMODE)
 969                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
 970         else if (speed == LSMODE)
 971                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
 972
 973         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
 974         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
 975 }
 976
 977 /* this function must be called with interrupt disabled */
 978 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
 979 {
 980         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
 981
 982         r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
 983         r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
 984
 985         disable_r8a66597_pipe_all(r8a66597, dev);
 986         free_usb_address(r8a66597, dev);
 987
 988         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 989 }
 990
 991 /* this function must be called with interrupt disabled */
 992 static void prepare_setup_packet(struct r8a66597 *r8a66597,
 993                                  struct r8a66597_td *td)
 994 {
 995         int i;
 996         u16 *p = (u16 *)td->urb->setup_packet;
 997         unsigned long setup_addr = USBREQ;
 998
 999         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1000                        DCPMAXP);
1001         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1002
1003         for (i = 0; i < 4; i++) {
1004                 r8a66597_write(r8a66597, cpu_to_le16(p[i]), setup_addr);
1005                 setup_addr += 2;
1006         }
1007         r8a66597_write(r8a66597, SUREQ, DCPCTR);
1008 }
1009
1010 /* this function must be called with interrupt disabled */
1011 static void prepare_packet_read(struct r8a66597 *r8a66597,
1012                                 struct r8a66597_td *td)
1013 {
1014         struct urb *urb = td->urb;
1015
1016         if (usb_pipecontrol(urb->pipe)) {
1017                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1018                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1019                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1020                 if (urb->actual_length == 0) {
1021                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1022                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1023                 }
1024                 pipe_irq_disable(r8a66597, td->pipenum);
1025                 pipe_start(r8a66597, td->pipe);
1026                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1027         } else {
1028                 if (urb->actual_length == 0) {
1029                         pipe_irq_disable(r8a66597, td->pipenum);
1030                         pipe_setting(r8a66597, td);
1031                         pipe_stop(r8a66597, td->pipe);
1032                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1033
1034                         if (td->pipe->pipetre) {
1035                                 r8a66597_write(r8a66597, TRCLR,
1036                                                 td->pipe->pipetre);
1037                                 r8a66597_write(r8a66597,
1038                                                 DIV_ROUND_UP
1039                                                   (urb->transfer_buffer_length,
1040                                                    td->maxpacket),
1041                                                 td->pipe->pipetrn);
1042                                 r8a66597_bset(r8a66597, TRENB,
1043                                                 td->pipe->pipetre);
1044                         }
1045
1046                         pipe_start(r8a66597, td->pipe);
1047                         pipe_irq_enable(r8a66597, urb, td->pipenum);
1048                 }
1049         }
1050 }
1051
1052 /* this function must be called with interrupt disabled */
1053 static void prepare_packet_write(struct r8a66597 *r8a66597,
1054                                  struct r8a66597_td *td)
1055 {
1056         u16 tmp;
1057         struct urb *urb = td->urb;
1058
1059         if (usb_pipecontrol(urb->pipe)) {
1060                 pipe_stop(r8a66597, td->pipe);
1061                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1062                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1063                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1064                 if (urb->actual_length == 0) {
1065                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1066                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1067                 }
1068         } else {
1069                 if (urb->actual_length == 0)
1070                         pipe_setting(r8a66597, td);
1071                 if (td->pipe->pipetre)
1072                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1073         }
1074         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1075
1076         fifo_change_from_pipe(r8a66597, td->pipe);
1077         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1078         if (unlikely((tmp & FRDY) == 0))
1079                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1080         else
1081                 packet_write(r8a66597, td->pipenum);
1082         pipe_start(r8a66597, td->pipe);
1083 }
1084
1085 /* this function must be called with interrupt disabled */
1086 static void prepare_status_packet(struct r8a66597 *r8a66597,
1087                                   struct r8a66597_td *td)
1088 {
1089         struct urb *urb = td->urb;
1090
1091         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1092         pipe_stop(r8a66597, td->pipe);
1093
1094         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1095                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1096                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1097                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1098                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1099                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1100                 enable_irq_empty(r8a66597, 0);
1101         } else {
1102                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1103                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1104                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1105                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1106                 enable_irq_ready(r8a66597, 0);
1107         }
1108         enable_irq_nrdy(r8a66597, 0);
1109         pipe_start(r8a66597, td->pipe);
1110 }
1111
1112 static int is_set_address(unsigned char *setup_packet)
1113 {
1114         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1115                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1116                 return 1;
1117         else
1118                 return 0;
1119 }
1120
1121 /* this function must be called with interrupt disabled */
1122 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1123 {
1124         BUG_ON(!td);
1125
1126         switch (td->type) {
1127         case USB_PID_SETUP:
1128                 if (is_set_address(td->urb->setup_packet)) {
1129                         td->set_address = 1;
1130                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1131                                                                      td->urb);
1132                         if (td->urb->setup_packet[2] == 0)
1133                                 return -EPIPE;
1134                 }
1135                 prepare_setup_packet(r8a66597, td);
1136                 break;
1137         case USB_PID_IN:
1138                 prepare_packet_read(r8a66597, td);
1139                 break;
1140         case USB_PID_OUT:
1141                 prepare_packet_write(r8a66597, td);
1142                 break;
1143         case USB_PID_ACK:
1144                 prepare_status_packet(r8a66597, td);
1145                 break;
1146         default:
1147                 err("invalid type.");
1148                 break;
1149         }
1150
1151         return 0;
1152 }
1153
1154 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1155 {
1156         if (usb_pipeisoc(urb->pipe)) {
1157                 if (urb->number_of_packets == td->iso_cnt)
1158                         return 1;
1159         }
1160
1161         /* control or bulk or interrupt */
1162         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1163             (td->short_packet) || (td->zero_packet))
1164                 return 1;
1165
1166         return 0;
1167 }
1168
1169 /* this function must be called with interrupt disabled */
1170 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1171 {
1172         unsigned long time;
1173
1174         BUG_ON(!td);
1175
1176         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1177             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1178                 r8a66597->timeout_map |= 1 << td->pipenum;
1179                 switch (usb_pipetype(td->urb->pipe)) {
1180                 case PIPE_INTERRUPT:
1181                 case PIPE_ISOCHRONOUS:
1182                         time = 30;
1183                         break;
1184                 default:
1185                         time = 300;
1186                         break;
1187                 }
1188
1189                 mod_timer(&r8a66597->td_timer[td->pipenum],
1190                           jiffies + msecs_to_jiffies(time));
1191         }
1192 }
1193
1194 /* this function must be called with interrupt disabled */
1195 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1196                 u16 pipenum, struct urb *urb, int status)
1197 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1198 {
1199         int restart = 0;
1200         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1201
1202         r8a66597->timeout_map &= ~(1 << pipenum);
1203
1204         if (likely(td)) {
1205                 if (td->set_address && (status != 0 || urb->unlinked))
1206                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1207
1208                 pipe_toggle_save(r8a66597, td->pipe, urb);
1209                 list_del(&td->queue);
1210                 kfree(td);
1211         }
1212
1213         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1214                 restart = 1;
1215
1216         if (likely(urb)) {
1217                 if (usb_pipeisoc(urb->pipe))
1218                         urb->start_frame = r8a66597_get_frame(hcd);
1219
1220                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1221                 spin_unlock(&r8a66597->lock);
1222                 usb_hcd_giveback_urb(hcd, urb, status);
1223                 spin_lock(&r8a66597->lock);
1224         }
1225
1226         if (restart) {
1227                 td = r8a66597_get_td(r8a66597, pipenum);
1228                 if (unlikely(!td))
1229                         return;
1230
1231                 start_transfer(r8a66597, td);
1232                 set_td_timer(r8a66597, td);
1233         }
1234 }
1235
1236 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1237 {
1238         u16 tmp;
1239         int rcv_len, bufsize, urb_len, size;
1240         u16 *buf;
1241         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1242         struct urb *urb;
1243         int finish = 0;
1244         int status = 0;
1245
1246         if (unlikely(!td))
1247                 return;
1248         urb = td->urb;
1249
1250         fifo_change_from_pipe(r8a66597, td->pipe);
1251         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1252         if (unlikely((tmp & FRDY) == 0)) {
1253                 pipe_stop(r8a66597, td->pipe);
1254                 pipe_irq_disable(r8a66597, pipenum);
1255                 err("in fifo not ready (%d)", pipenum);
1256                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1257                 return;
1258         }
1259
1260         /* prepare parameters */
1261         rcv_len = tmp & DTLN;
1262         if (usb_pipeisoc(urb->pipe)) {
1263                 buf = (u16 *)(urb->transfer_buffer +
1264                                 urb->iso_frame_desc[td->iso_cnt].offset);
1265                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1266         } else {
1267                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1268                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1269         }
1270         bufsize = min(urb_len, (int) td->maxpacket);
1271         if (rcv_len <= bufsize) {
1272                 size = rcv_len;
1273         } else {
1274                 size = bufsize;
1275                 status = -EOVERFLOW;
1276                 finish = 1;
1277         }
1278
1279         /* update parameters */
1280         urb->actual_length += size;
1281         if (rcv_len == 0)
1282                 td->zero_packet = 1;
1283         if (rcv_len < bufsize) {
1284                 td->short_packet = 1;
1285         }
1286         if (usb_pipeisoc(urb->pipe)) {
1287                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1288                 urb->iso_frame_desc[td->iso_cnt].status = status;
1289                 td->iso_cnt++;
1290                 finish = 0;
1291         }
1292
1293         /* check transfer finish */
1294         if (finish || check_transfer_finish(td, urb)) {
1295                 pipe_stop(r8a66597, td->pipe);
1296                 pipe_irq_disable(r8a66597, pipenum);
1297                 finish = 1;
1298         }
1299
1300         /* read fifo */
1301         if (urb->transfer_buffer) {
1302                 if (size == 0)
1303                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1304                 else
1305                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1306                                            buf, size);
1307         }
1308
1309         if (finish && pipenum != 0)
1310                 finish_request(r8a66597, td, pipenum, urb, status);
1311 }
1312
1313 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1314 {
1315         u16 tmp;
1316         int bufsize, size;
1317         u16 *buf;
1318         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1319         struct urb *urb;
1320
1321         if (unlikely(!td))
1322                 return;
1323         urb = td->urb;
1324
1325         fifo_change_from_pipe(r8a66597, td->pipe);
1326         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1327         if (unlikely((tmp & FRDY) == 0)) {
1328                 pipe_stop(r8a66597, td->pipe);
1329                 pipe_irq_disable(r8a66597, pipenum);
1330                 err("out write fifo not ready. (%d)", pipenum);
1331                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1332                 return;
1333         }
1334
1335         /* prepare parameters */
1336         bufsize = td->maxpacket;
1337         if (usb_pipeisoc(urb->pipe)) {
1338                 buf = (u16 *)(urb->transfer_buffer +
1339                                 urb->iso_frame_desc[td->iso_cnt].offset);
1340                 size = min(bufsize,
1341                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1342         } else {
1343                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1344                 size = min((int)bufsize,
1345                            urb->transfer_buffer_length - urb->actual_length);
1346         }
1347
1348         /* write fifo */
1349         if (pipenum > 0)
1350                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1351         if (urb->transfer_buffer) {
1352                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1353                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1354                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1355         }
1356
1357         /* update parameters */
1358         urb->actual_length += size;
1359         if (usb_pipeisoc(urb->pipe)) {
1360                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1361                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1362                 td->iso_cnt++;
1363         }
1364
1365         /* check transfer finish */
1366         if (check_transfer_finish(td, urb)) {
1367                 disable_irq_ready(r8a66597, pipenum);
1368                 enable_irq_empty(r8a66597, pipenum);
1369                 if (!usb_pipeisoc(urb->pipe))
1370                         enable_irq_nrdy(r8a66597, pipenum);
1371         } else
1372                 pipe_irq_enable(r8a66597, urb, pipenum);
1373 }
1374
1375
1376 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1377 {
1378         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1379         struct urb *urb;
1380         u8 finish = 0;
1381
1382         if (unlikely(!td))
1383                 return;
1384         urb = td->urb;
1385
1386         switch (td->type) {
1387         case USB_PID_IN:
1388         case USB_PID_OUT:
1389                 if (check_transfer_finish(td, urb))
1390                         td->type = USB_PID_ACK;
1391                 break;
1392         case USB_PID_SETUP:
1393                 if (urb->transfer_buffer_length == urb->actual_length)
1394                         td->type = USB_PID_ACK;
1395                 else if (usb_pipeout(urb->pipe))
1396                         td->type = USB_PID_OUT;
1397                 else
1398                         td->type = USB_PID_IN;
1399                 break;
1400         case USB_PID_ACK:
1401                 finish = 1;
1402                 break;
1403         }
1404
1405         if (finish || status != 0 || urb->unlinked)
1406                 finish_request(r8a66597, td, 0, urb, status);
1407         else
1408                 start_transfer(r8a66597, td);
1409 }
1410
1411 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1412 {
1413         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1414
1415         if (td) {
1416                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1417
1418                 if (pid == PID_NAK)
1419                         return -ECONNRESET;
1420                 else
1421                         return -EPIPE;
1422         }
1423         return 0;
1424 }
1425
1426 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1427 {
1428         u16 check;
1429         u16 pipenum;
1430         u16 mask;
1431         struct r8a66597_td *td;
1432
1433         mask = r8a66597_read(r8a66597, BRDYSTS)
1434                & r8a66597_read(r8a66597, BRDYENB);
1435         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1436         if (mask & BRDY0) {
1437                 td = r8a66597_get_td(r8a66597, 0);
1438                 if (td && td->type == USB_PID_IN)
1439                         packet_read(r8a66597, 0);
1440                 else
1441                         pipe_irq_disable(r8a66597, 0);
1442                 check_next_phase(r8a66597, 0);
1443         }
1444
1445         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1446                 check = 1 << pipenum;
1447                 if (mask & check) {
1448                         td = r8a66597_get_td(r8a66597, pipenum);
1449                         if (unlikely(!td))
1450                                 continue;
1451
1452                         if (td->type == USB_PID_IN)
1453                                 packet_read(r8a66597, pipenum);
1454                         else if (td->type == USB_PID_OUT)
1455                                 packet_write(r8a66597, pipenum);
1456                 }
1457         }
1458 }
1459
1460 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1461 {
1462         u16 tmp;
1463         u16 check;
1464         u16 pipenum;
1465         u16 mask;
1466         struct r8a66597_td *td;
1467
1468         mask = r8a66597_read(r8a66597, BEMPSTS)
1469                & r8a66597_read(r8a66597, BEMPENB);
1470         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1471         if (mask & BEMP0) {
1472                 cfifo_change(r8a66597, 0);
1473                 td = r8a66597_get_td(r8a66597, 0);
1474                 if (td && td->type != USB_PID_OUT)
1475                         disable_irq_empty(r8a66597, 0);
1476                 check_next_phase(r8a66597, 0);
1477         }
1478
1479         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1480                 check = 1 << pipenum;
1481                 if (mask &  check) {
1482                         struct r8a66597_td *td;
1483                         td = r8a66597_get_td(r8a66597, pipenum);
1484                         if (unlikely(!td))
1485                                 continue;
1486
1487                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1488                         if ((tmp & INBUFM) == 0) {
1489                                 disable_irq_empty(r8a66597, pipenum);
1490                                 pipe_irq_disable(r8a66597, pipenum);
1491                                 finish_request(r8a66597, td, pipenum, td->urb,
1492                                                 0);
1493                         }
1494                 }
1495         }
1496 }
1497
1498 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1499 {
1500         u16 check;
1501         u16 pipenum;
1502         u16 mask;
1503         int status;
1504
1505         mask = r8a66597_read(r8a66597, NRDYSTS)
1506                & r8a66597_read(r8a66597, NRDYENB);
1507         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1508         if (mask & NRDY0) {
1509                 cfifo_change(r8a66597, 0);
1510                 status = get_urb_error(r8a66597, 0);
1511                 pipe_irq_disable(r8a66597, 0);
1512                 check_next_phase(r8a66597, status);
1513         }
1514
1515         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1516                 check = 1 << pipenum;
1517                 if (mask & check) {
1518                         struct r8a66597_td *td;
1519                         td = r8a66597_get_td(r8a66597, pipenum);
1520                         if (unlikely(!td))
1521                                 continue;
1522
1523                         status = get_urb_error(r8a66597, pipenum);
1524                         pipe_irq_disable(r8a66597, pipenum);
1525                         pipe_stop(r8a66597, td->pipe);
1526                         finish_request(r8a66597, td, pipenum, td->urb, status);
1527                 }
1528         }
1529 }
1530
1531 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
1532 {
1533         mod_timer(&r8a66597->rh_timer,
1534                         jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
1535 }
1536
1537 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
1538 {
1539         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1540
1541         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1542         rh->scount = R8A66597_MAX_SAMPLING;
1543         r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
1544                                          | (1 << USB_PORT_FEAT_C_CONNECTION);
1545         r8a66597_root_hub_start_polling(r8a66597);
1546 }
1547
1548 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1549 {
1550         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1551         u16 intsts0, intsts1, intsts2;
1552         u16 intenb0, intenb1, intenb2;
1553         u16 mask0, mask1, mask2;
1554         int status;
1555
1556         spin_lock(&r8a66597->lock);
1557
1558         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1559         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1560         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1561         intenb0 = r8a66597_read(r8a66597, INTENB0);
1562         intenb1 = r8a66597_read(r8a66597, INTENB1);
1563         intenb2 = r8a66597_read(r8a66597, INTENB2);
1564
1565         mask2 = intsts2 & intenb2;
1566         mask1 = intsts1 & intenb1;
1567         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1568         if (mask2) {
1569                 if (mask2 & ATTCH) {
1570                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1571                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1572
1573                         /* start usb bus sampling */
1574                         start_root_hub_sampling(r8a66597, 1);
1575                 }
1576                 if (mask2 & DTCH) {
1577                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1578                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1579                         r8a66597_usb_disconnect(r8a66597, 1);
1580                 }
1581         }
1582
1583         if (mask1) {
1584                 if (mask1 & ATTCH) {
1585                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1586                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1587
1588                         /* start usb bus sampling */
1589                         start_root_hub_sampling(r8a66597, 0);
1590                 }
1591                 if (mask1 & DTCH) {
1592                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1593                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1594                         r8a66597_usb_disconnect(r8a66597, 0);
1595                 }
1596                 if (mask1 & SIGN) {
1597                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1598                         status = get_urb_error(r8a66597, 0);
1599                         check_next_phase(r8a66597, status);
1600                 }
1601                 if (mask1 & SACK) {
1602                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1603                         check_next_phase(r8a66597, 0);
1604                 }
1605         }
1606         if (mask0) {
1607                 if (mask0 & BRDY)
1608                         irq_pipe_ready(r8a66597);
1609                 if (mask0 & BEMP)
1610                         irq_pipe_empty(r8a66597);
1611                 if (mask0 & NRDY)
1612                         irq_pipe_nrdy(r8a66597);
1613         }
1614
1615         spin_unlock(&r8a66597->lock);
1616         return IRQ_HANDLED;
1617 }
1618
1619 /* this function must be called with interrupt disabled */
1620 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1621 {
1622         u16 tmp;
1623         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1624
1625         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1626                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1627
1628                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1629                 if ((tmp & USBRST) == USBRST) {
1630                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1631                                       dvstctr_reg);
1632                         r8a66597_root_hub_start_polling(r8a66597);
1633                 } else
1634                         r8a66597_usb_connect(r8a66597, port);
1635         }
1636
1637         if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1638                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1639                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1640         }
1641
1642         if (rh->scount > 0) {
1643                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1644                 if (tmp == rh->old_syssts) {
1645                         rh->scount--;
1646                         if (rh->scount == 0)
1647                                 r8a66597_check_syssts(r8a66597, port, tmp);
1648                         else
1649                                 r8a66597_root_hub_start_polling(r8a66597);
1650                 } else {
1651                         rh->scount = R8A66597_MAX_SAMPLING;
1652                         rh->old_syssts = tmp;
1653                         r8a66597_root_hub_start_polling(r8a66597);
1654                 }
1655         }
1656 }
1657
1658 static void r8a66597_interval_timer(unsigned long _r8a66597)
1659 {
1660         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1661         unsigned long flags;
1662         u16 pipenum;
1663         struct r8a66597_td *td;
1664
1665         spin_lock_irqsave(&r8a66597->lock, flags);
1666
1667         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1668                 if (!(r8a66597->interval_map & (1 << pipenum)))
1669                         continue;
1670                 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1671                         continue;
1672
1673                 td = r8a66597_get_td(r8a66597, pipenum);
1674                 if (td)
1675                         start_transfer(r8a66597, td);
1676         }
1677
1678         spin_unlock_irqrestore(&r8a66597->lock, flags);
1679 }
1680
1681 static void r8a66597_td_timer(unsigned long _r8a66597)
1682 {
1683         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1684         unsigned long flags;
1685         u16 pipenum;
1686         struct r8a66597_td *td, *new_td = NULL;
1687         struct r8a66597_pipe *pipe;
1688
1689         spin_lock_irqsave(&r8a66597->lock, flags);
1690         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1691                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1692                         continue;
1693                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1694                         continue;
1695
1696                 td = r8a66597_get_td(r8a66597, pipenum);
1697                 if (!td) {
1698                         r8a66597->timeout_map &= ~(1 << pipenum);
1699                         continue;
1700                 }
1701
1702                 if (td->urb->actual_length) {
1703                         set_td_timer(r8a66597, td);
1704                         break;
1705                 }
1706
1707                 pipe = td->pipe;
1708                 pipe_stop(r8a66597, pipe);
1709
1710                 new_td = td;
1711                 do {
1712                         list_move_tail(&new_td->queue,
1713                                        &r8a66597->pipe_queue[pipenum]);
1714                         new_td = r8a66597_get_td(r8a66597, pipenum);
1715                         if (!new_td) {
1716                                 new_td = td;
1717                                 break;
1718                         }
1719                 } while (td != new_td && td->address == new_td->address);
1720
1721                 start_transfer(r8a66597, new_td);
1722
1723                 if (td == new_td)
1724                         r8a66597->timeout_map &= ~(1 << pipenum);
1725                 else
1726                         set_td_timer(r8a66597, new_td);
1727                 break;
1728         }
1729         spin_unlock_irqrestore(&r8a66597->lock, flags);
1730 }
1731
1732 static void r8a66597_timer(unsigned long _r8a66597)
1733 {
1734         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1735         unsigned long flags;
1736
1737         spin_lock_irqsave(&r8a66597->lock, flags);
1738
1739         r8a66597_root_hub_control(r8a66597, 0);
1740         r8a66597_root_hub_control(r8a66597, 1);
1741
1742         spin_unlock_irqrestore(&r8a66597->lock, flags);
1743 }
1744
1745 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1746 {
1747         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1748
1749         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1750             (urb->dev->state == USB_STATE_CONFIGURED))
1751                 return 1;
1752         else
1753                 return 0;
1754 }
1755
1756 static int r8a66597_start(struct usb_hcd *hcd)
1757 {
1758         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1759
1760         hcd->state = HC_STATE_RUNNING;
1761         return enable_controller(r8a66597);
1762 }
1763
1764 static void r8a66597_stop(struct usb_hcd *hcd)
1765 {
1766         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1767
1768         disable_controller(r8a66597);
1769 }
1770
1771 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1772 {
1773         unsigned int usb_address = usb_pipedevice(urb->pipe);
1774         u16 root_port, hub_port;
1775
1776         if (usb_address == 0) {
1777                 get_port_number(urb->dev->devpath,
1778                                 &root_port, &hub_port);
1779                 set_devadd_reg(r8a66597, 0,
1780                                get_r8a66597_usb_speed(urb->dev->speed),
1781                                get_parent_r8a66597_address(r8a66597, urb->dev),
1782                                hub_port, root_port);
1783         }
1784 }
1785
1786 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1787                                             struct urb *urb,
1788                                             struct usb_host_endpoint *hep)
1789 {
1790         struct r8a66597_td *td;
1791         u16 pipenum;
1792
1793         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1794         if (td == NULL)
1795                 return NULL;
1796
1797         pipenum = r8a66597_get_pipenum(urb, hep);
1798         td->pipenum = pipenum;
1799         td->pipe = hep->hcpriv;
1800         td->urb = urb;
1801         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1802         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1803                                       !usb_pipein(urb->pipe));
1804         if (usb_pipecontrol(urb->pipe))
1805                 td->type = USB_PID_SETUP;
1806         else if (usb_pipein(urb->pipe))
1807                 td->type = USB_PID_IN;
1808         else
1809                 td->type = USB_PID_OUT;
1810         INIT_LIST_HEAD(&td->queue);
1811
1812         return td;
1813 }
1814
1815 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1816                                 struct urb *urb,
1817                                 gfp_t mem_flags)
1818 {
1819         struct usb_host_endpoint *hep = urb->ep;
1820         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1821         struct r8a66597_td *td = NULL;
1822         int ret, request = 0;
1823         unsigned long flags;
1824
1825         spin_lock_irqsave(&r8a66597->lock, flags);
1826         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1827                 ret = -ENODEV;
1828                 goto error_not_linked;
1829         }
1830
1831         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1832         if (ret)
1833                 goto error_not_linked;
1834
1835         if (!hep->hcpriv) {
1836                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1837                                 GFP_ATOMIC);
1838                 if (!hep->hcpriv) {
1839                         ret = -ENOMEM;
1840                         goto error;
1841                 }
1842                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1843                 if (usb_pipeendpoint(urb->pipe))
1844                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1845         }
1846
1847         if (unlikely(check_pipe_config(r8a66597, urb)))
1848                 init_pipe_config(r8a66597, urb);
1849
1850         set_address_zero(r8a66597, urb);
1851         td = r8a66597_make_td(r8a66597, urb, hep);
1852         if (td == NULL) {
1853                 ret = -ENOMEM;
1854                 goto error;
1855         }
1856         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1857                 request = 1;
1858         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1859         urb->hcpriv = td;
1860
1861         if (request) {
1862                 if (td->pipe->info.timer_interval) {
1863                         r8a66597->interval_map |= 1 << td->pipenum;
1864                         mod_timer(&r8a66597->interval_timer[td->pipenum],
1865                                   jiffies + msecs_to_jiffies(
1866                                         td->pipe->info.timer_interval));
1867                 } else {
1868                         ret = start_transfer(r8a66597, td);
1869                         if (ret < 0) {
1870                                 list_del(&td->queue);
1871                                 kfree(td);
1872                         }
1873                 }
1874         } else
1875                 set_td_timer(r8a66597, td);
1876
1877 error:
1878         if (ret)
1879                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1880 error_not_linked:
1881         spin_unlock_irqrestore(&r8a66597->lock, flags);
1882         return ret;
1883 }
1884
1885 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1886                 int status)
1887 {
1888         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1889         struct r8a66597_td *td;
1890         unsigned long flags;
1891         int rc;
1892
1893         spin_lock_irqsave(&r8a66597->lock, flags);
1894         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1895         if (rc)
1896                 goto done;
1897
1898         if (urb->hcpriv) {
1899                 td = urb->hcpriv;
1900                 pipe_stop(r8a66597, td->pipe);
1901                 pipe_irq_disable(r8a66597, td->pipenum);
1902                 disable_irq_empty(r8a66597, td->pipenum);
1903                 finish_request(r8a66597, td, td->pipenum, urb, status);
1904         }
1905  done:
1906         spin_unlock_irqrestore(&r8a66597->lock, flags);
1907         return rc;
1908 }
1909
1910 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1911                                       struct usb_host_endpoint *hep)
1912 {
1913         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1914         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1915         struct r8a66597_td *td;
1916         struct urb *urb = NULL;
1917         u16 pipenum;
1918         unsigned long flags;
1919
1920         if (pipe == NULL)
1921                 return;
1922         pipenum = pipe->info.pipenum;
1923
1924         if (pipenum == 0) {
1925                 kfree(hep->hcpriv);
1926                 hep->hcpriv = NULL;
1927                 return;
1928         }
1929
1930         spin_lock_irqsave(&r8a66597->lock, flags);
1931         pipe_stop(r8a66597, pipe);
1932         pipe_irq_disable(r8a66597, pipenum);
1933         disable_irq_empty(r8a66597, pipenum);
1934         td = r8a66597_get_td(r8a66597, pipenum);
1935         if (td)
1936                 urb = td->urb;
1937         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1938         kfree(hep->hcpriv);
1939         hep->hcpriv = NULL;
1940         spin_unlock_irqrestore(&r8a66597->lock, flags);
1941 }
1942
1943 static int r8a66597_get_frame(struct usb_hcd *hcd)
1944 {
1945         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1946         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1947 }
1948
1949 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1950 {
1951         int chix;
1952
1953         if (udev->state == USB_STATE_CONFIGURED &&
1954             udev->parent && udev->parent->devnum > 1 &&
1955             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1956                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1957
1958         for (chix = 0; chix < udev->maxchild; chix++) {
1959                 struct usb_device *childdev = udev->children[chix];
1960
1961                 if (childdev)
1962                         collect_usb_address_map(childdev, map);
1963         }
1964 }
1965
1966 /* this function must be called with interrupt disabled */
1967 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1968                                                    int addr)
1969 {
1970         struct r8a66597_device *dev;
1971         struct list_head *list = &r8a66597->child_device;
1972
1973         list_for_each_entry(dev, list, device_list) {
1974                 if (!dev)
1975                         continue;
1976                 if (dev->usb_address != addr)
1977                         continue;
1978
1979                 return dev;
1980         }
1981
1982         err("get_r8a66597_device fail.(%d)\n", addr);
1983         return NULL;
1984 }
1985
1986 static void update_usb_address_map(struct r8a66597 *r8a66597,
1987                                    struct usb_device *root_hub,
1988                                    unsigned long *map)
1989 {
1990         int i, j, addr;
1991         unsigned long diff;
1992         unsigned long flags;
1993
1994         for (i = 0; i < 4; i++) {
1995                 diff = r8a66597->child_connect_map[i] ^ map[i];
1996                 if (!diff)
1997                         continue;
1998
1999                 for (j = 0; j < 32; j++) {
2000                         if (!(diff & (1 << j)))
2001                                 continue;
2002
2003                         addr = i * 32 + j;
2004                         if (map[i] & (1 << j))
2005                                 set_child_connect_map(r8a66597, addr);
2006                         else {
2007                                 struct r8a66597_device *dev;
2008
2009                                 spin_lock_irqsave(&r8a66597->lock, flags);
2010                                 dev = get_r8a66597_device(r8a66597, addr);
2011                                 disable_r8a66597_pipe_all(r8a66597, dev);
2012                                 free_usb_address(r8a66597, dev);
2013                                 put_child_connect_map(r8a66597, addr);
2014                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
2015                         }
2016                 }
2017         }
2018 }
2019
2020 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2021                                         struct usb_hcd *hcd)
2022 {
2023         struct usb_bus *bus;
2024         unsigned long now_map[4];
2025
2026         memset(now_map, 0, sizeof(now_map));
2027
2028         list_for_each_entry(bus, &usb_bus_list, bus_list) {
2029                 if (!bus->root_hub)
2030                         continue;
2031
2032                 if (bus->busnum != hcd->self.busnum)
2033                         continue;
2034
2035                 collect_usb_address_map(bus->root_hub, now_map);
2036                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2037         }
2038 }
2039
2040 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2041 {
2042         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2043         unsigned long flags;
2044         int i;
2045
2046         r8a66597_check_detect_child(r8a66597, hcd);
2047
2048         spin_lock_irqsave(&r8a66597->lock, flags);
2049
2050         *buf = 0;       /* initialize (no change) */
2051
2052         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2053                 if (r8a66597->root_hub[i].port & 0xffff0000)
2054                         *buf |= 1 << (i + 1);
2055         }
2056
2057         spin_unlock_irqrestore(&r8a66597->lock, flags);
2058
2059         return (*buf != 0);
2060 }
2061
2062 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2063                                     struct usb_hub_descriptor *desc)
2064 {
2065         desc->bDescriptorType = 0x29;
2066         desc->bHubContrCurrent = 0;
2067         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2068         desc->bDescLength = 9;
2069         desc->bPwrOn2PwrGood = 0;
2070         desc->wHubCharacteristics = cpu_to_le16(0x0011);
2071         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2072         desc->bitmap[1] = ~0;
2073 }
2074
2075 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2076                                 u16 wIndex, char *buf, u16 wLength)
2077 {
2078         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2079         int ret;
2080         int port = (wIndex & 0x00FF) - 1;
2081         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2082         unsigned long flags;
2083
2084         ret = 0;
2085
2086         spin_lock_irqsave(&r8a66597->lock, flags);
2087         switch (typeReq) {
2088         case ClearHubFeature:
2089         case SetHubFeature:
2090                 switch (wValue) {
2091                 case C_HUB_OVER_CURRENT:
2092                 case C_HUB_LOCAL_POWER:
2093                         break;
2094                 default:
2095                         goto error;
2096                 }
2097                 break;
2098         case ClearPortFeature:
2099                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2100                         goto error;
2101                 if (wLength != 0)
2102                         goto error;
2103
2104                 switch (wValue) {
2105                 case USB_PORT_FEAT_ENABLE:
2106                         rh->port &= (1 << USB_PORT_FEAT_POWER);
2107                         break;
2108                 case USB_PORT_FEAT_SUSPEND:
2109                         break;
2110                 case USB_PORT_FEAT_POWER:
2111                         r8a66597_port_power(r8a66597, port, 0);
2112                         break;
2113                 case USB_PORT_FEAT_C_ENABLE:
2114                 case USB_PORT_FEAT_C_SUSPEND:
2115                 case USB_PORT_FEAT_C_CONNECTION:
2116                 case USB_PORT_FEAT_C_OVER_CURRENT:
2117                 case USB_PORT_FEAT_C_RESET:
2118                         break;
2119                 default:
2120                         goto error;
2121                 }
2122                 rh->port &= ~(1 << wValue);
2123                 break;
2124         case GetHubDescriptor:
2125                 r8a66597_hub_descriptor(r8a66597,
2126                                         (struct usb_hub_descriptor *)buf);
2127                 break;
2128         case GetHubStatus:
2129                 *buf = 0x00;
2130                 break;
2131         case GetPortStatus:
2132                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2133                         goto error;
2134                 *(u32 *)buf = cpu_to_le32(rh->port);
2135                 break;
2136         case SetPortFeature:
2137                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2138                         goto error;
2139                 if (wLength != 0)
2140                         goto error;
2141
2142                 switch (wValue) {
2143                 case USB_PORT_FEAT_SUSPEND:
2144                         break;
2145                 case USB_PORT_FEAT_POWER:
2146                         r8a66597_port_power(r8a66597, port, 1);
2147                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2148                         break;
2149                 case USB_PORT_FEAT_RESET: {
2150                         struct r8a66597_device *dev = rh->dev;
2151
2152                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2153
2154                         disable_r8a66597_pipe_all(r8a66597, dev);
2155                         free_usb_address(r8a66597, dev);
2156
2157                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2158                                       get_dvstctr_reg(port));
2159                         mod_timer(&r8a66597->rh_timer,
2160                                   jiffies + msecs_to_jiffies(50));
2161                         }
2162                         break;
2163                 default:
2164                         goto error;
2165                 }
2166                 rh->port |= 1 << wValue;
2167                 break;
2168         default:
2169 error:
2170                 ret = -EPIPE;
2171                 break;
2172         }
2173
2174         spin_unlock_irqrestore(&r8a66597->lock, flags);
2175         return ret;
2176 }
2177
2178 static struct hc_driver r8a66597_hc_driver = {
2179         .description =          hcd_name,
2180         .hcd_priv_size =        sizeof(struct r8a66597),
2181         .irq =                  r8a66597_irq,
2182
2183         /*
2184          * generic hardware linkage
2185          */
2186         .flags =                HCD_USB2,
2187
2188         .start =                r8a66597_start,
2189         .stop =                 r8a66597_stop,
2190
2191         /*
2192          * managing i/o requests and associated device resources
2193          */
2194         .urb_enqueue =          r8a66597_urb_enqueue,
2195         .urb_dequeue =          r8a66597_urb_dequeue,
2196         .endpoint_disable =     r8a66597_endpoint_disable,
2197
2198         /*
2199          * periodic schedule support
2200          */
2201         .get_frame_number =     r8a66597_get_frame,
2202
2203         /*
2204          * root hub support
2205          */
2206         .hub_status_data =      r8a66597_hub_status_data,
2207         .hub_control =          r8a66597_hub_control,
2208 };
2209
2210 #if defined(CONFIG_PM)
2211 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2212 {
2213         return 0;
2214 }
2215
2216 static int r8a66597_resume(struct platform_device *pdev)
2217 {
2218         return 0;
2219 }
2220 #else   /* if defined(CONFIG_PM) */
2221 #define r8a66597_suspend        NULL
2222 #define r8a66597_resume         NULL
2223 #endif
2224
2225 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2226 {
2227         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2228         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2229
2230         del_timer_sync(&r8a66597->rh_timer);
2231         usb_remove_hcd(hcd);
2232         iounmap((void *)r8a66597->reg);
2233         usb_put_hcd(hcd);
2234         return 0;
2235 }
2236
2237 #define resource_len(r) (((r)->end - (r)->start) + 1)
2238 static int __init r8a66597_probe(struct platform_device *pdev)
2239 {
2240         struct resource *res = NULL;
2241         int irq = -1;
2242         void __iomem *reg = NULL;
2243         struct usb_hcd *hcd = NULL;
2244         struct r8a66597 *r8a66597;
2245         int ret = 0;
2246         int i;
2247
2248         if (pdev->dev.dma_mask) {
2249                 ret = -EINVAL;
2250                 err("dma not support");
2251                 goto clean_up;
2252         }
2253
2254         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2255                                            (char *)hcd_name);
2256         if (!res) {
2257                 ret = -ENODEV;
2258                 err("platform_get_resource_byname error.");
2259                 goto clean_up;
2260         }
2261
2262         irq = platform_get_irq(pdev, 0);
2263         if (irq < 0) {
2264                 ret = -ENODEV;
2265                 err("platform_get_irq error.");
2266                 goto clean_up;
2267         }
2268
2269         reg = ioremap(res->start, resource_len(res));
2270         if (reg == NULL) {
2271                 ret = -ENOMEM;
2272                 err("ioremap error.");
2273                 goto clean_up;
2274         }
2275
2276         /* initialize hcd */
2277         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2278         if (!hcd) {
2279                 ret = -ENOMEM;
2280                 err("Failed to create hcd");
2281                 goto clean_up;
2282         }
2283         r8a66597 = hcd_to_r8a66597(hcd);
2284         memset(r8a66597, 0, sizeof(struct r8a66597));
2285         dev_set_drvdata(&pdev->dev, r8a66597);
2286
2287         spin_lock_init(&r8a66597->lock);
2288         init_timer(&r8a66597->rh_timer);
2289         r8a66597->rh_timer.function = r8a66597_timer;
2290         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2291         r8a66597->reg = (unsigned long)reg;
2292
2293         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2294                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2295                 init_timer(&r8a66597->td_timer[i]);
2296                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2297                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2298                 setup_timer(&r8a66597->interval_timer[i],
2299                                 r8a66597_interval_timer,
2300                                 (unsigned long)r8a66597);
2301         }
2302         INIT_LIST_HEAD(&r8a66597->child_device);
2303
2304         hcd->rsrc_start = res->start;
2305         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
2306         if (ret != 0) {
2307                 err("Failed to add hcd");
2308                 goto clean_up;
2309         }
2310
2311         return 0;
2312
2313 clean_up:
2314         if (reg)
2315                 iounmap(reg);
2316
2317         return ret;
2318 }
2319
2320 static struct platform_driver r8a66597_driver = {
2321         .probe =        r8a66597_probe,
2322         .remove =       r8a66597_remove,
2323         .suspend =      r8a66597_suspend,
2324         .resume =       r8a66597_resume,
2325         .driver         = {
2326                 .name = (char *) hcd_name,
2327                 .owner  = THIS_MODULE,
2328         },
2329 };
2330
2331 static int __init r8a66597_init(void)
2332 {
2333         if (usb_disabled())
2334                 return -ENODEV;
2335
2336         info("driver %s, %s", hcd_name, DRIVER_VERSION);
2337         return platform_driver_register(&r8a66597_driver);
2338 }
2339 module_init(r8a66597_init);
2340
2341 static void __exit r8a66597_cleanup(void)
2342 {
2343         platform_driver_unregister(&r8a66597_driver);
2344 }
2345 module_exit(r8a66597_cleanup);
2346