drivers/usb/host/r8a66597-hcd.c

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