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 <yoshihiro.shimoda.uh@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/errno.h> 30#include <linux/timer.h> 31#include <linux/delay.h> 32#include <linux/list.h> 33#include <linux/interrupt.h> 34#include <linux/usb.h> 35#include <linux/usb/hcd.h> 36#include <linux/platform_device.h> 37#include <linux/io.h> 38#include <linux/mm.h> 39#include <linux/irq.h> 40#include <linux/slab.h> 41#include <asm/cacheflush.h> 42 43#include "r8a66597.h" 44 45MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); 46MODULE_LICENSE("GPL"); 47MODULE_AUTHOR("Yoshihiro Shimoda"); 48MODULE_ALIAS("platform:r8a66597_hcd"); 49 50#define DRIVER_VERSION "2009-05-26" 51 52static const char hcd_name[] = "r8a66597_hcd"; 53 54static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 55static int r8a66597_get_frame(struct usb_hcd *hcd); 56 57/* this function must be called with interrupt disabled */ 58static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 59 unsigned long reg) 60{ 61 u16 tmp; 62 63 tmp = r8a66597_read(r8a66597, INTENB0); 64 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 65 r8a66597_bset(r8a66597, 1 << pipenum, reg); 66 r8a66597_write(r8a66597, tmp, INTENB0); 67} 68 69/* this function must be called with interrupt disabled */ 70static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 71 unsigned long reg) 72{ 73 u16 tmp; 74 75 tmp = r8a66597_read(r8a66597, INTENB0); 76 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 77 r8a66597_bclr(r8a66597, 1 << pipenum, reg); 78 r8a66597_write(r8a66597, tmp, INTENB0); 79} 80 81static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, 82 u16 usbspd, u8 upphub, u8 hubport, int port) 83{ 84 u16 val; 85 unsigned long devadd_reg = get_devadd_addr(r8a66597_address); 86 87 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); 88 r8a66597_write(r8a66597, val, devadd_reg); 89} 90 91static int r8a66597_clock_enable(struct r8a66597 *r8a66597) 92{ 93 u16 tmp; 94 int i = 0; 95 96 if (r8a66597->pdata->on_chip) { 97 clk_prepare_enable(r8a66597->clk); 98 do { 99 r8a66597_write(r8a66597, SCKE, SYSCFG0); 100 tmp = r8a66597_read(r8a66597, SYSCFG0); 101 if (i++ > 1000) { 102 printk(KERN_ERR "r8a66597: reg access fail.\n"); 103 return -ENXIO; 104 } 105 } while ((tmp & SCKE) != SCKE); 106 r8a66597_write(r8a66597, 0x04, 0x02); 107 } else { 108 do { 109 r8a66597_write(r8a66597, USBE, SYSCFG0); 110 tmp = r8a66597_read(r8a66597, SYSCFG0); 111 if (i++ > 1000) { 112 printk(KERN_ERR "r8a66597: reg access fail.\n"); 113 return -ENXIO; 114 } 115 } while ((tmp & USBE) != USBE); 116 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 117 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), 118 XTAL, SYSCFG0); 119 120 i = 0; 121 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 122 do { 123 msleep(1); 124 tmp = r8a66597_read(r8a66597, SYSCFG0); 125 if (i++ > 500) { 126 printk(KERN_ERR "r8a66597: reg access fail.\n"); 127 return -ENXIO; 128 } 129 } while ((tmp & SCKE) != SCKE); 130 } 131 132 return 0; 133} 134 135static void r8a66597_clock_disable(struct r8a66597 *r8a66597) 136{ 137 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 138 udelay(1); 139 140 if (r8a66597->pdata->on_chip) { 141 clk_disable_unprepare(r8a66597->clk); 142 } else { 143 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 144 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 145 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 146 } 147} 148 149static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) 150{ 151 u16 val; 152 153 val = port ? DRPD : DCFM | DRPD; 154 r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); 155 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 156 157 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); 158 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); 159 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 160} 161 162static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) 163{ 164 u16 val, tmp; 165 166 r8a66597_write(r8a66597, 0, get_intenb_reg(port)); 167 r8a66597_write(r8a66597, 0, get_intsts_reg(port)); 168 169 r8a66597_port_power(r8a66597, port, 0); 170 171 do { 172 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; 173 udelay(640); 174 } while (tmp == EDGESTS); 175 176 val = port ? DRPD : DCFM | DRPD; 177 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); 178 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 179} 180 181static int enable_controller(struct r8a66597 *r8a66597) 182{ 183 int ret, port; 184 u16 vif = r8a66597->pdata->vif ? LDRV : 0; 185 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; 186 u16 endian = r8a66597->pdata->endian ? BIGEND : 0; 187 188 ret = r8a66597_clock_enable(r8a66597); 189 if (ret < 0) 190 return ret; 191 192 r8a66597_bset(r8a66597, vif & LDRV, PINCFG); 193 r8a66597_bset(r8a66597, USBE, SYSCFG0); 194 195 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 196 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); 197 r8a66597_bset(r8a66597, BRDY0, BRDYENB); 198 r8a66597_bset(r8a66597, BEMP0, BEMPENB); 199 200 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); 201 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); 202 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); 203 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); 204 205 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); 206 207 for (port = 0; port < r8a66597->max_root_hub; port++) 208 r8a66597_enable_port(r8a66597, port); 209 210 return 0; 211} 212 213static void disable_controller(struct r8a66597 *r8a66597) 214{ 215 int port; 216 217 /* disable interrupts */ 218 r8a66597_write(r8a66597, 0, INTENB0); 219 r8a66597_write(r8a66597, 0, INTENB1); 220 r8a66597_write(r8a66597, 0, BRDYENB); 221 r8a66597_write(r8a66597, 0, BEMPENB); 222 r8a66597_write(r8a66597, 0, NRDYENB); 223 224 /* clear status */ 225 r8a66597_write(r8a66597, 0, BRDYSTS); 226 r8a66597_write(r8a66597, 0, NRDYSTS); 227 r8a66597_write(r8a66597, 0, BEMPSTS); 228 229 for (port = 0; port < r8a66597->max_root_hub; port++) 230 r8a66597_disable_port(r8a66597, port); 231 232 r8a66597_clock_disable(r8a66597); 233} 234 235static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, 236 struct usb_device *udev) 237{ 238 struct r8a66597_device *dev; 239 240 if (udev->parent && udev->parent->devnum != 1) 241 udev = udev->parent; 242 243 dev = dev_get_drvdata(&udev->dev); 244 if (dev) 245 return dev->address; 246 else 247 return 0; 248} 249 250static int is_child_device(char *devpath) 251{ 252 return (devpath[2] ? 1 : 0); 253} 254 255static int is_hub_limit(char *devpath) 256{ 257 return ((strlen(devpath) >= 4) ? 1 : 0); 258} 259 260static void get_port_number(struct r8a66597 *r8a66597, 261 char *devpath, u16 *root_port, u16 *hub_port) 262{ 263 if (root_port) { 264 *root_port = (devpath[0] & 0x0F) - 1; 265 if (*root_port >= r8a66597->max_root_hub) 266 printk(KERN_ERR "r8a66597: Illegal root port number.\n"); 267 } 268 if (hub_port) 269 *hub_port = devpath[2] & 0x0F; 270} 271 272static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) 273{ 274 u16 usbspd = 0; 275 276 switch (speed) { 277 case USB_SPEED_LOW: 278 usbspd = LSMODE; 279 break; 280 case USB_SPEED_FULL: 281 usbspd = FSMODE; 282 break; 283 case USB_SPEED_HIGH: 284 usbspd = HSMODE; 285 break; 286 default: 287 printk(KERN_ERR "r8a66597: unknown speed\n"); 288 break; 289 } 290 291 return usbspd; 292} 293 294static void set_child_connect_map(struct r8a66597 *r8a66597, int address) 295{ 296 int idx; 297 298 idx = address / 32; 299 r8a66597->child_connect_map[idx] |= 1 << (address % 32); 300} 301 302static void put_child_connect_map(struct r8a66597 *r8a66597, int address) 303{ 304 int idx; 305 306 idx = address / 32; 307 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); 308} 309 310static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) 311{ 312 u16 pipenum = pipe->info.pipenum; 313 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; 314 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; 315 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; 316 317 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ 318 dma_ch = R8A66597_PIPE_NO_DMA; 319 320 pipe->fifoaddr = fifoaddr[dma_ch]; 321 pipe->fifosel = fifosel[dma_ch]; 322 pipe->fifoctr = fifoctr[dma_ch]; 323 324 if (pipenum == 0) 325 pipe->pipectr = DCPCTR; 326 else 327 pipe->pipectr = get_pipectr_addr(pipenum); 328 329 if (check_bulk_or_isoc(pipenum)) { 330 pipe->pipetre = get_pipetre_addr(pipenum); 331 pipe->pipetrn = get_pipetrn_addr(pipenum); 332 } else { 333 pipe->pipetre = 0; 334 pipe->pipetrn = 0; 335 } 336} 337 338static struct r8a66597_device * 339get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) 340{ 341 if (usb_pipedevice(urb->pipe) == 0) 342 return &r8a66597->device0; 343 344 return dev_get_drvdata(&urb->dev->dev); 345} 346 347static int make_r8a66597_device(struct r8a66597 *r8a66597, 348 struct urb *urb, u8 addr) 349{ 350 struct r8a66597_device *dev; 351 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 352 353 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); 354 if (dev == NULL) 355 return -ENOMEM; 356 357 dev_set_drvdata(&urb->dev->dev, dev); 358 dev->udev = urb->dev; 359 dev->address = addr; 360 dev->usb_address = usb_address; 361 dev->state = USB_STATE_ADDRESS; 362 dev->ep_in_toggle = 0; 363 dev->ep_out_toggle = 0; 364 INIT_LIST_HEAD(&dev->device_list); 365 list_add_tail(&dev->device_list, &r8a66597->child_device); 366 367 get_port_number(r8a66597, urb->dev->devpath, 368 &dev->root_port, &dev->hub_port); 369 if (!is_child_device(urb->dev->devpath)) 370 r8a66597->root_hub[dev->root_port].dev = dev; 371 372 set_devadd_reg(r8a66597, dev->address, 373 get_r8a66597_usb_speed(urb->dev->speed), 374 get_parent_r8a66597_address(r8a66597, urb->dev), 375 dev->hub_port, dev->root_port); 376 377 return 0; 378} 379 380/* this function must be called with interrupt disabled */ 381static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) 382{ 383 u8 addr; /* R8A66597's address */ 384 struct r8a66597_device *dev; 385 386 if (is_hub_limit(urb->dev->devpath)) { 387 dev_err(&urb->dev->dev, "External hub limit reached.\n"); 388 return 0; 389 } 390 391 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 392 if (dev && dev->state >= USB_STATE_ADDRESS) 393 return dev->address; 394 395 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { 396 if (r8a66597->address_map & (1 << addr)) 397 continue; 398 399 dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr); 400 r8a66597->address_map |= 1 << addr; 401 402 if (make_r8a66597_device(r8a66597, urb, addr) < 0) 403 return 0; 404 405 return addr; 406 } 407 408 dev_err(&urb->dev->dev, 409 "cannot communicate with a USB device more than 10.(%x)\n", 410 r8a66597->address_map); 411 412 return 0; 413} 414 415/* this function must be called with interrupt disabled */ 416static void free_usb_address(struct r8a66597 *r8a66597, 417 struct r8a66597_device *dev, int reset) 418{ 419 int port; 420 421 if (!dev) 422 return; 423 424 dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address); 425 426 dev->state = USB_STATE_DEFAULT; 427 r8a66597->address_map &= ~(1 << dev->address); 428 dev->address = 0; 429 /* 430 * Only when resetting USB, it is necessary to erase drvdata. When 431 * a usb device with usb hub is disconnect, "dev->udev" is already 432 * freed on usb_desconnect(). So we cannot access the data. 433 */ 434 if (reset) 435 dev_set_drvdata(&dev->udev->dev, NULL); 436 list_del(&dev->device_list); 437 kfree(dev); 438 439 for (port = 0; port < r8a66597->max_root_hub; port++) { 440 if (r8a66597->root_hub[port].dev == dev) { 441 r8a66597->root_hub[port].dev = NULL; 442 break; 443 } 444 } 445} 446 447static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, 448 u16 mask, u16 loop) 449{ 450 u16 tmp; 451 int i = 0; 452 453 do { 454 tmp = r8a66597_read(r8a66597, reg); 455 if (i++ > 1000000) { 456 printk(KERN_ERR "r8a66597: register%lx, loop %x " 457 "is timeout\n", reg, loop); 458 break; 459 } 460 ndelay(1); 461 } while ((tmp & mask) != loop); 462} 463 464/* this function must be called with interrupt disabled */ 465static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 466{ 467 u16 tmp; 468 469 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 470 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ 471 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 472 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); 473} 474 475/* this function must be called with interrupt disabled */ 476static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 477{ 478 u16 tmp; 479 480 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 481 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ 482 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); 483 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 484 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); 485} 486 487/* this function must be called with interrupt disabled */ 488static void clear_all_buffer(struct r8a66597 *r8a66597, 489 struct r8a66597_pipe *pipe) 490{ 491 u16 tmp; 492 493 if (!pipe || pipe->info.pipenum == 0) 494 return; 495 496 pipe_stop(r8a66597, pipe); 497 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 498 tmp = r8a66597_read(r8a66597, pipe->pipectr); 499 tmp = r8a66597_read(r8a66597, pipe->pipectr); 500 tmp = r8a66597_read(r8a66597, pipe->pipectr); 501 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 502} 503 504/* this function must be called with interrupt disabled */ 505static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 506 struct r8a66597_pipe *pipe, int toggle) 507{ 508 if (toggle) 509 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 510 else 511 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 512} 513 514static inline unsigned short mbw_value(struct r8a66597 *r8a66597) 515{ 516 if (r8a66597->pdata->on_chip) 517 return MBW_32; 518 else 519 return MBW_16; 520} 521 522/* this function must be called with interrupt disabled */ 523static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 524{ 525 unsigned short mbw = mbw_value(r8a66597); 526 527 r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL); 528 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 529} 530 531/* this function must be called with interrupt disabled */ 532static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 533 struct r8a66597_pipe *pipe) 534{ 535 unsigned short mbw = mbw_value(r8a66597); 536 537 cfifo_change(r8a66597, 0); 538 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL); 539 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL); 540 541 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE, 542 pipe->fifosel); 543 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 544} 545 546static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 547{ 548 struct r8a66597_pipe *pipe = hep->hcpriv; 549 550 if (usb_pipeendpoint(urb->pipe) == 0) 551 return 0; 552 else 553 return pipe->info.pipenum; 554} 555 556static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 557{ 558 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 559 560 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 561} 562 563static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 564 int urb_pipe) 565{ 566 if (!dev) 567 return NULL; 568 569 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 570} 571 572/* this function must be called with interrupt disabled */ 573static void pipe_toggle_set(struct r8a66597 *r8a66597, 574 struct r8a66597_pipe *pipe, 575 struct urb *urb, int set) 576{ 577 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 578 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 579 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 580 581 if (!toggle) 582 return; 583 584 if (set) 585 *toggle |= 1 << endpoint; 586 else 587 *toggle &= ~(1 << endpoint); 588} 589 590/* this function must be called with interrupt disabled */ 591static void pipe_toggle_save(struct r8a66597 *r8a66597, 592 struct r8a66597_pipe *pipe, 593 struct urb *urb) 594{ 595 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 596 pipe_toggle_set(r8a66597, pipe, urb, 1); 597 else 598 pipe_toggle_set(r8a66597, pipe, urb, 0); 599} 600 601/* this function must be called with interrupt disabled */ 602static void pipe_toggle_restore(struct r8a66597 *r8a66597, 603 struct r8a66597_pipe *pipe, 604 struct urb *urb) 605{ 606 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 607 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 608 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 609 610 if (!toggle) 611 return; 612 613 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 614} 615 616/* this function must be called with interrupt disabled */ 617static void pipe_buffer_setting(struct r8a66597 *r8a66597, 618 struct r8a66597_pipe_info *info) 619{ 620 u16 val = 0; 621 622 if (info->pipenum == 0) 623 return; 624 625 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 626 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 627 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 628 if (!info->dir_in) 629 val |= R8A66597_DIR; 630 if (info->type == R8A66597_BULK && info->dir_in) 631 val |= R8A66597_DBLB | R8A66597_SHTNAK; 632 val |= info->type | info->epnum; 633 r8a66597_write(r8a66597, val, PIPECFG); 634 635 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 636 PIPEBUF); 637 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 638 PIPEMAXP); 639 r8a66597_write(r8a66597, info->interval, PIPEPERI); 640} 641 642/* this function must be called with interrupt disabled */ 643static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 644{ 645 struct r8a66597_pipe_info *info; 646 struct urb *urb = td->urb; 647 648 if (td->pipenum > 0) { 649 info = &td->pipe->info; 650 cfifo_change(r8a66597, 0); 651 pipe_buffer_setting(r8a66597, info); 652 653 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 654 usb_pipeout(urb->pipe)) && 655 !usb_pipecontrol(urb->pipe)) { 656 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 657 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 658 clear_all_buffer(r8a66597, td->pipe); 659 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 660 usb_pipeout(urb->pipe), 1); 661 } 662 pipe_toggle_restore(r8a66597, td->pipe, urb); 663 } 664} 665 666/* this function must be called with interrupt disabled */ 667static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 668 struct usb_endpoint_descriptor *ep) 669{ 670 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 671 672 memset(array, 0, sizeof(array)); 673 switch (usb_endpoint_type(ep)) { 674 case USB_ENDPOINT_XFER_BULK: 675 if (usb_endpoint_dir_in(ep)) 676 array[i++] = 4; 677 else { 678 array[i++] = 3; 679 array[i++] = 5; 680 } 681 break; 682 case USB_ENDPOINT_XFER_INT: 683 if (usb_endpoint_dir_in(ep)) { 684 array[i++] = 6; 685 array[i++] = 7; 686 array[i++] = 8; 687 } else 688 array[i++] = 9; 689 break; 690 case USB_ENDPOINT_XFER_ISOC: 691 if (usb_endpoint_dir_in(ep)) 692 array[i++] = 2; 693 else 694 array[i++] = 1; 695 break; 696 default: 697 printk(KERN_ERR "r8a66597: Illegal type\n"); 698 return 0; 699 } 700 701 i = 1; 702 min = array[0]; 703 while (array[i] != 0) { 704 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 705 min = array[i]; 706 i++; 707 } 708 709 return min; 710} 711 712static u16 get_r8a66597_type(__u8 type) 713{ 714 u16 r8a66597_type; 715 716 switch (type) { 717 case USB_ENDPOINT_XFER_BULK: 718 r8a66597_type = R8A66597_BULK; 719 break; 720 case USB_ENDPOINT_XFER_INT: 721 r8a66597_type = R8A66597_INT; 722 break; 723 case USB_ENDPOINT_XFER_ISOC: 724 r8a66597_type = R8A66597_ISO; 725 break; 726 default: 727 printk(KERN_ERR "r8a66597: Illegal type\n"); 728 r8a66597_type = 0x0000; 729 break; 730 } 731 732 return r8a66597_type; 733} 734 735static u16 get_bufnum(u16 pipenum) 736{ 737 u16 bufnum = 0; 738 739 if (pipenum == 0) 740 bufnum = 0; 741 else if (check_bulk_or_isoc(pipenum)) 742 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 743 else if (check_interrupt(pipenum)) 744 bufnum = 4 + (pipenum - 6); 745 else 746 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 747 748 return bufnum; 749} 750 751static u16 get_buf_bsize(u16 pipenum) 752{ 753 u16 buf_bsize = 0; 754 755 if (pipenum == 0) 756 buf_bsize = 3; 757 else if (check_bulk_or_isoc(pipenum)) 758 buf_bsize = R8A66597_BUF_BSIZE - 1; 759 else if (check_interrupt(pipenum)) 760 buf_bsize = 0; 761 else 762 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 763 764 return buf_bsize; 765} 766 767/* this function must be called with interrupt disabled */ 768static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 769 struct r8a66597_device *dev, 770 struct r8a66597_pipe *pipe, 771 struct urb *urb) 772{ 773 int i; 774 struct r8a66597_pipe_info *info = &pipe->info; 775 unsigned short mbw = mbw_value(r8a66597); 776 777 /* pipe dma is only for external controlles */ 778 if (r8a66597->pdata->on_chip) 779 return; 780 781 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 782 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 783 if ((r8a66597->dma_map & (1 << i)) != 0) 784 continue; 785 786 dev_info(&dev->udev->dev, 787 "address %d, EndpointAddress 0x%02x use " 788 "DMA FIFO\n", usb_pipedevice(urb->pipe), 789 info->dir_in ? 790 USB_ENDPOINT_DIR_MASK + info->epnum 791 : info->epnum); 792 793 r8a66597->dma_map |= 1 << i; 794 dev->dma_map |= 1 << i; 795 set_pipe_reg_addr(pipe, i); 796 797 cfifo_change(r8a66597, 0); 798 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, 799 mbw | CURPIPE, pipe->fifosel); 800 801 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 802 pipe->info.pipenum); 803 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 804 break; 805 } 806 } 807} 808 809/* this function must be called with interrupt disabled */ 810static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 811 struct usb_host_endpoint *hep, 812 struct r8a66597_pipe_info *info) 813{ 814 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 815 struct r8a66597_pipe *pipe = hep->hcpriv; 816 817 dev_dbg(&dev->udev->dev, "enable_pipe:\n"); 818 819 pipe->info = *info; 820 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 821 r8a66597->pipe_cnt[pipe->info.pipenum]++; 822 dev->pipe_cnt[pipe->info.pipenum]++; 823 824 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 825} 826 827static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb, 828 int status) 829__releases(r8a66597->lock) 830__acquires(r8a66597->lock) 831{ 832 if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { 833 void *ptr; 834 835 for (ptr = urb->transfer_buffer; 836 ptr < urb->transfer_buffer + urb->transfer_buffer_length; 837 ptr += PAGE_SIZE) 838 flush_dcache_page(virt_to_page(ptr)); 839 } 840 841 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 842 spin_unlock(&r8a66597->lock); 843 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status); 844 spin_lock(&r8a66597->lock); 845} 846 847/* this function must be called with interrupt disabled */ 848static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 849{ 850 struct r8a66597_td *td, *next; 851 struct urb *urb; 852 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 853 854 if (list_empty(list)) 855 return; 856 857 list_for_each_entry_safe(td, next, list, queue) { 858 if (td->address != address) 859 continue; 860 861 urb = td->urb; 862 list_del(&td->queue); 863 kfree(td); 864 865 if (urb) 866 r8a66597_urb_done(r8a66597, urb, -ENODEV); 867 868 break; 869 } 870} 871 872/* this function must be called with interrupt disabled */ 873static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 874 struct r8a66597_device *dev) 875{ 876 int check_ep0 = 0; 877 u16 pipenum; 878 879 if (!dev) 880 return; 881 882 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 883 if (!dev->pipe_cnt[pipenum]) 884 continue; 885 886 if (!check_ep0) { 887 check_ep0 = 1; 888 force_dequeue(r8a66597, 0, dev->address); 889 } 890 891 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 892 dev->pipe_cnt[pipenum] = 0; 893 force_dequeue(r8a66597, pipenum, dev->address); 894 } 895 896 dev_dbg(&dev->udev->dev, "disable_pipe\n"); 897 898 r8a66597->dma_map &= ~(dev->dma_map); 899 dev->dma_map = 0; 900} 901 902static u16 get_interval(struct urb *urb, __u8 interval) 903{ 904 u16 time = 1; 905 int i; 906 907 if (urb->dev->speed == USB_SPEED_HIGH) { 908 if (interval > IITV) 909 time = IITV; 910 else 911 time = interval ? interval - 1 : 0; 912 } else { 913 if (interval > 128) { 914 time = IITV; 915 } else { 916 /* calculate the nearest value for PIPEPERI */ 917 for (i = 0; i < 7; i++) { 918 if ((1 << i) < interval && 919 (1 << (i + 1) > interval)) 920 time = 1 << i; 921 } 922 } 923 } 924 925 return time; 926} 927 928static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 929{ 930 __u8 i; 931 unsigned long time = 1; 932 933 if (usb_pipeisoc(urb->pipe)) 934 return 0; 935 936 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 937 for (i = 0; i < (interval - 1); i++) 938 time *= 2; 939 time = time * 125 / 1000; /* uSOF -> msec */ 940 } else { 941 time = interval; 942 } 943 944 return time; 945} 946 947/* this function must be called with interrupt disabled */ 948static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 949 struct usb_host_endpoint *hep, 950 struct usb_endpoint_descriptor *ep) 951{ 952 struct r8a66597_pipe_info info; 953 954 info.pipenum = get_empty_pipenum(r8a66597, ep); 955 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 956 info.epnum = usb_endpoint_num(ep); 957 info.maxpacket = usb_endpoint_maxp(ep); 958 info.type = get_r8a66597_type(usb_endpoint_type(ep)); 959 info.bufnum = get_bufnum(info.pipenum); 960 info.buf_bsize = get_buf_bsize(info.pipenum); 961 if (info.type == R8A66597_BULK) { 962 info.interval = 0; 963 info.timer_interval = 0; 964 } else { 965 info.interval = get_interval(urb, ep->bInterval); 966 info.timer_interval = get_timer_interval(urb, ep->bInterval); 967 } 968 if (usb_endpoint_dir_in(ep)) 969 info.dir_in = 1; 970 else 971 info.dir_in = 0; 972 973 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 974} 975 976static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 977{ 978 struct r8a66597_device *dev; 979 980 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 981 dev->state = USB_STATE_CONFIGURED; 982} 983 984static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 985 u16 pipenum) 986{ 987 if (pipenum == 0 && usb_pipeout(urb->pipe)) 988 enable_irq_empty(r8a66597, pipenum); 989 else 990 enable_irq_ready(r8a66597, pipenum); 991 992 if (!usb_pipeisoc(urb->pipe)) 993 enable_irq_nrdy(r8a66597, pipenum); 994} 995 996static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 997{ 998 disable_irq_ready(r8a66597, pipenum); 999 disable_irq_nrdy(r8a66597, pipenum); 1000} 1001 1002static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 1003{ 1004 mod_timer(&r8a66597->rh_timer, 1005 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 1006} 1007 1008static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, 1009 int connect) 1010{ 1011 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1012 1013 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1014 rh->scount = R8A66597_MAX_SAMPLING; 1015 if (connect) 1016 rh->port |= USB_PORT_STAT_CONNECTION; 1017 else 1018 rh->port &= ~USB_PORT_STAT_CONNECTION; 1019 rh->port |= USB_PORT_STAT_C_CONNECTION << 16; 1020 1021 r8a66597_root_hub_start_polling(r8a66597); 1022} 1023 1024/* this function must be called with interrupt disabled */ 1025static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 1026 u16 syssts) 1027__releases(r8a66597->lock) 1028__acquires(r8a66597->lock) 1029{ 1030 if (syssts == SE0) { 1031 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1032 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1033 } else { 1034 if (syssts == FS_JSTS) 1035 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 1036 else if (syssts == LS_JSTS) 1037 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 1038 1039 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 1040 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 1041 1042 if (r8a66597->bus_suspended) 1043 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1044 } 1045 1046 spin_unlock(&r8a66597->lock); 1047 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597)); 1048 spin_lock(&r8a66597->lock); 1049} 1050 1051/* this function must be called with interrupt disabled */ 1052static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 1053{ 1054 u16 speed = get_rh_usb_speed(r8a66597, port); 1055 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1056 1057 rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED); 1058 if (speed == HSMODE) 1059 rh->port |= USB_PORT_STAT_HIGH_SPEED; 1060 else if (speed == LSMODE) 1061 rh->port |= USB_PORT_STAT_LOW_SPEED; 1062 1063 rh->port &= ~USB_PORT_STAT_RESET; 1064 rh->port |= USB_PORT_STAT_ENABLE; 1065} 1066 1067/* this function must be called with interrupt disabled */ 1068static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1069{ 1070 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1071 1072 disable_r8a66597_pipe_all(r8a66597, dev); 1073 free_usb_address(r8a66597, dev, 0); 1074 1075 start_root_hub_sampling(r8a66597, port, 0); 1076} 1077 1078/* this function must be called with interrupt disabled */ 1079static void prepare_setup_packet(struct r8a66597 *r8a66597, 1080 struct r8a66597_td *td) 1081{ 1082 int i; 1083 __le16 *p = (__le16 *)td->urb->setup_packet; 1084 unsigned long setup_addr = USBREQ; 1085 1086 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1087 DCPMAXP); 1088 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1089 1090 for (i = 0; i < 4; i++) { 1091 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1092 setup_addr += 2; 1093 } 1094 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1095} 1096 1097/* this function must be called with interrupt disabled */ 1098static void prepare_packet_read(struct r8a66597 *r8a66597, 1099 struct r8a66597_td *td) 1100{ 1101 struct urb *urb = td->urb; 1102 1103 if (usb_pipecontrol(urb->pipe)) { 1104 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1105 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1106 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1107 if (urb->actual_length == 0) { 1108 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1109 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1110 } 1111 pipe_irq_disable(r8a66597, td->pipenum); 1112 pipe_start(r8a66597, td->pipe); 1113 pipe_irq_enable(r8a66597, urb, td->pipenum); 1114 } else { 1115 if (urb->actual_length == 0) { 1116 pipe_irq_disable(r8a66597, td->pipenum); 1117 pipe_setting(r8a66597, td); 1118 pipe_stop(r8a66597, td->pipe); 1119 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1120 1121 if (td->pipe->pipetre) { 1122 r8a66597_write(r8a66597, TRCLR, 1123 td->pipe->pipetre); 1124 r8a66597_write(r8a66597, 1125 DIV_ROUND_UP 1126 (urb->transfer_buffer_length, 1127 td->maxpacket), 1128 td->pipe->pipetrn); 1129 r8a66597_bset(r8a66597, TRENB, 1130 td->pipe->pipetre); 1131 } 1132 1133 pipe_start(r8a66597, td->pipe); 1134 pipe_irq_enable(r8a66597, urb, td->pipenum); 1135 } 1136 } 1137} 1138 1139/* this function must be called with interrupt disabled */ 1140static void prepare_packet_write(struct r8a66597 *r8a66597, 1141 struct r8a66597_td *td) 1142{ 1143 u16 tmp; 1144 struct urb *urb = td->urb; 1145 1146 if (usb_pipecontrol(urb->pipe)) { 1147 pipe_stop(r8a66597, td->pipe); 1148 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1149 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1150 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1151 if (urb->actual_length == 0) { 1152 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1153 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1154 } 1155 } else { 1156 if (urb->actual_length == 0) 1157 pipe_setting(r8a66597, td); 1158 if (td->pipe->pipetre) 1159 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1160 } 1161 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1162 1163 fifo_change_from_pipe(r8a66597, td->pipe); 1164 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1165 if (unlikely((tmp & FRDY) == 0)) 1166 pipe_irq_enable(r8a66597, urb, td->pipenum); 1167 else 1168 packet_write(r8a66597, td->pipenum); 1169 pipe_start(r8a66597, td->pipe); 1170} 1171 1172/* this function must be called with interrupt disabled */ 1173static void prepare_status_packet(struct r8a66597 *r8a66597, 1174 struct r8a66597_td *td) 1175{ 1176 struct urb *urb = td->urb; 1177 1178 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1179 pipe_stop(r8a66597, td->pipe); 1180 1181 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1182 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1183 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1184 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1185 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1186 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1187 enable_irq_empty(r8a66597, 0); 1188 } else { 1189 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1190 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1191 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1192 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1193 enable_irq_ready(r8a66597, 0); 1194 } 1195 enable_irq_nrdy(r8a66597, 0); 1196 pipe_start(r8a66597, td->pipe); 1197} 1198 1199static int is_set_address(unsigned char *setup_packet) 1200{ 1201 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1202 setup_packet[1] == USB_REQ_SET_ADDRESS) 1203 return 1; 1204 else 1205 return 0; 1206} 1207 1208/* this function must be called with interrupt disabled */ 1209static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1210{ 1211 BUG_ON(!td); 1212 1213 switch (td->type) { 1214 case USB_PID_SETUP: 1215 if (is_set_address(td->urb->setup_packet)) { 1216 td->set_address = 1; 1217 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1218 td->urb); 1219 if (td->urb->setup_packet[2] == 0) 1220 return -EPIPE; 1221 } 1222 prepare_setup_packet(r8a66597, td); 1223 break; 1224 case USB_PID_IN: 1225 prepare_packet_read(r8a66597, td); 1226 break; 1227 case USB_PID_OUT: 1228 prepare_packet_write(r8a66597, td); 1229 break; 1230 case USB_PID_ACK: 1231 prepare_status_packet(r8a66597, td); 1232 break; 1233 default: 1234 printk(KERN_ERR "r8a66597: invalid type.\n"); 1235 break; 1236 } 1237 1238 return 0; 1239} 1240 1241static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1242{ 1243 if (usb_pipeisoc(urb->pipe)) { 1244 if (urb->number_of_packets == td->iso_cnt) 1245 return 1; 1246 } 1247 1248 /* control or bulk or interrupt */ 1249 if ((urb->transfer_buffer_length <= urb->actual_length) || 1250 (td->short_packet) || (td->zero_packet)) 1251 return 1; 1252 1253 return 0; 1254} 1255 1256/* this function must be called with interrupt disabled */ 1257static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1258{ 1259 unsigned long time; 1260 1261 BUG_ON(!td); 1262 1263 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1264 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1265 r8a66597->timeout_map |= 1 << td->pipenum; 1266 switch (usb_pipetype(td->urb->pipe)) { 1267 case PIPE_INTERRUPT: 1268 case PIPE_ISOCHRONOUS: 1269 time = 30; 1270 break; 1271 default: 1272 time = 300; 1273 break; 1274 } 1275 1276 mod_timer(&r8a66597->td_timer[td->pipenum], 1277 jiffies + msecs_to_jiffies(time)); 1278 } 1279} 1280 1281/* this function must be called with interrupt disabled */ 1282static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1283 u16 pipenum, struct urb *urb, int status) 1284__releases(r8a66597->lock) __acquires(r8a66597->lock) 1285{ 1286 int restart = 0; 1287 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1288 1289 r8a66597->timeout_map &= ~(1 << pipenum); 1290 1291 if (likely(td)) { 1292 if (td->set_address && (status != 0 || urb->unlinked)) 1293 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1294 1295 pipe_toggle_save(r8a66597, td->pipe, urb); 1296 list_del(&td->queue); 1297 kfree(td); 1298 } 1299 1300 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1301 restart = 1; 1302 1303 if (likely(urb)) { 1304 if (usb_pipeisoc(urb->pipe)) 1305 urb->start_frame = r8a66597_get_frame(hcd); 1306 1307 r8a66597_urb_done(r8a66597, urb, status); 1308 } 1309 1310 if (restart) { 1311 td = r8a66597_get_td(r8a66597, pipenum); 1312 if (unlikely(!td)) 1313 return; 1314 1315 start_transfer(r8a66597, td); 1316 set_td_timer(r8a66597, td); 1317 } 1318} 1319 1320static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1321{ 1322 u16 tmp; 1323 int rcv_len, bufsize, urb_len, size; 1324 u16 *buf; 1325 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1326 struct urb *urb; 1327 int finish = 0; 1328 int status = 0; 1329 1330 if (unlikely(!td)) 1331 return; 1332 urb = td->urb; 1333 1334 fifo_change_from_pipe(r8a66597, td->pipe); 1335 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1336 if (unlikely((tmp & FRDY) == 0)) { 1337 pipe_stop(r8a66597, td->pipe); 1338 pipe_irq_disable(r8a66597, pipenum); 1339 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); 1340 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1341 return; 1342 } 1343 1344 /* prepare parameters */ 1345 rcv_len = tmp & DTLN; 1346 if (usb_pipeisoc(urb->pipe)) { 1347 buf = (u16 *)(urb->transfer_buffer + 1348 urb->iso_frame_desc[td->iso_cnt].offset); 1349 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1350 } else { 1351 buf = (void *)urb->transfer_buffer + urb->actual_length; 1352 urb_len = urb->transfer_buffer_length - urb->actual_length; 1353 } 1354 bufsize = min(urb_len, (int) td->maxpacket); 1355 if (rcv_len <= bufsize) { 1356 size = rcv_len; 1357 } else { 1358 size = bufsize; 1359 status = -EOVERFLOW; 1360 finish = 1; 1361 } 1362 1363 /* update parameters */ 1364 urb->actual_length += size; 1365 if (rcv_len == 0) 1366 td->zero_packet = 1; 1367 if (rcv_len < bufsize) { 1368 td->short_packet = 1; 1369 } 1370 if (usb_pipeisoc(urb->pipe)) { 1371 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1372 urb->iso_frame_desc[td->iso_cnt].status = status; 1373 td->iso_cnt++; 1374 finish = 0; 1375 } 1376 1377 /* check transfer finish */ 1378 if (finish || check_transfer_finish(td, urb)) { 1379 pipe_stop(r8a66597, td->pipe); 1380 pipe_irq_disable(r8a66597, pipenum); 1381 finish = 1; 1382 } 1383 1384 /* read fifo */ 1385 if (urb->transfer_buffer) { 1386 if (size == 0) 1387 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1388 else 1389 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1390 buf, size); 1391 } 1392 1393 if (finish && pipenum != 0) 1394 finish_request(r8a66597, td, pipenum, urb, status); 1395} 1396 1397static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1398{ 1399 u16 tmp; 1400 int bufsize, size; 1401 u16 *buf; 1402 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1403 struct urb *urb; 1404 1405 if (unlikely(!td)) 1406 return; 1407 urb = td->urb; 1408 1409 fifo_change_from_pipe(r8a66597, td->pipe); 1410 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1411 if (unlikely((tmp & FRDY) == 0)) { 1412 pipe_stop(r8a66597, td->pipe); 1413 pipe_irq_disable(r8a66597, pipenum); 1414 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); 1415 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1416 return; 1417 } 1418 1419 /* prepare parameters */ 1420 bufsize = td->maxpacket; 1421 if (usb_pipeisoc(urb->pipe)) { 1422 buf = (u16 *)(urb->transfer_buffer + 1423 urb->iso_frame_desc[td->iso_cnt].offset); 1424 size = min(bufsize, 1425 (int)urb->iso_frame_desc[td->iso_cnt].length); 1426 } else { 1427 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1428 size = min_t(u32, bufsize, 1429 urb->transfer_buffer_length - urb->actual_length); 1430 } 1431 1432 /* write fifo */ 1433 if (pipenum > 0) 1434 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1435 if (urb->transfer_buffer) { 1436 r8a66597_write_fifo(r8a66597, td->pipe, buf, size); 1437 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1438 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1439 } 1440 1441 /* update parameters */ 1442 urb->actual_length += size; 1443 if (usb_pipeisoc(urb->pipe)) { 1444 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1445 urb->iso_frame_desc[td->iso_cnt].status = 0; 1446 td->iso_cnt++; 1447 } 1448 1449 /* check transfer finish */ 1450 if (check_transfer_finish(td, urb)) { 1451 disable_irq_ready(r8a66597, pipenum); 1452 enable_irq_empty(r8a66597, pipenum); 1453 if (!usb_pipeisoc(urb->pipe)) 1454 enable_irq_nrdy(r8a66597, pipenum); 1455 } else 1456 pipe_irq_enable(r8a66597, urb, pipenum); 1457} 1458 1459 1460static void check_next_phase(struct r8a66597 *r8a66597, int status) 1461{ 1462 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1463 struct urb *urb; 1464 u8 finish = 0; 1465 1466 if (unlikely(!td)) 1467 return; 1468 urb = td->urb; 1469 1470 switch (td->type) { 1471 case USB_PID_IN: 1472 case USB_PID_OUT: 1473 if (check_transfer_finish(td, urb)) 1474 td->type = USB_PID_ACK; 1475 break; 1476 case USB_PID_SETUP: 1477 if (urb->transfer_buffer_length == urb->actual_length) 1478 td->type = USB_PID_ACK; 1479 else if (usb_pipeout(urb->pipe)) 1480 td->type = USB_PID_OUT; 1481 else 1482 td->type = USB_PID_IN; 1483 break; 1484 case USB_PID_ACK: 1485 finish = 1; 1486 break; 1487 } 1488 1489 if (finish || status != 0 || urb->unlinked) 1490 finish_request(r8a66597, td, 0, urb, status); 1491 else 1492 start_transfer(r8a66597, td); 1493} 1494 1495static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1496{ 1497 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1498 1499 if (td) { 1500 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1501 1502 if (pid == PID_NAK) 1503 return -ECONNRESET; 1504 else 1505 return -EPIPE; 1506 } 1507 return 0; 1508} 1509 1510static void irq_pipe_ready(struct r8a66597 *r8a66597) 1511{ 1512 u16 check; 1513 u16 pipenum; 1514 u16 mask; 1515 struct r8a66597_td *td; 1516 1517 mask = r8a66597_read(r8a66597, BRDYSTS) 1518 & r8a66597_read(r8a66597, BRDYENB); 1519 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1520 if (mask & BRDY0) { 1521 td = r8a66597_get_td(r8a66597, 0); 1522 if (td && td->type == USB_PID_IN) 1523 packet_read(r8a66597, 0); 1524 else 1525 pipe_irq_disable(r8a66597, 0); 1526 check_next_phase(r8a66597, 0); 1527 } 1528 1529 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1530 check = 1 << pipenum; 1531 if (mask & check) { 1532 td = r8a66597_get_td(r8a66597, pipenum); 1533 if (unlikely(!td)) 1534 continue; 1535 1536 if (td->type == USB_PID_IN) 1537 packet_read(r8a66597, pipenum); 1538 else if (td->type == USB_PID_OUT) 1539 packet_write(r8a66597, pipenum); 1540 } 1541 } 1542} 1543 1544static void irq_pipe_empty(struct r8a66597 *r8a66597) 1545{ 1546 u16 tmp; 1547 u16 check; 1548 u16 pipenum; 1549 u16 mask; 1550 struct r8a66597_td *td; 1551 1552 mask = r8a66597_read(r8a66597, BEMPSTS) 1553 & r8a66597_read(r8a66597, BEMPENB); 1554 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1555 if (mask & BEMP0) { 1556 cfifo_change(r8a66597, 0); 1557 td = r8a66597_get_td(r8a66597, 0); 1558 if (td && td->type != USB_PID_OUT) 1559 disable_irq_empty(r8a66597, 0); 1560 check_next_phase(r8a66597, 0); 1561 } 1562 1563 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1564 check = 1 << pipenum; 1565 if (mask & check) { 1566 struct r8a66597_td *td; 1567 td = r8a66597_get_td(r8a66597, pipenum); 1568 if (unlikely(!td)) 1569 continue; 1570 1571 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1572 if ((tmp & INBUFM) == 0) { 1573 disable_irq_empty(r8a66597, pipenum); 1574 pipe_irq_disable(r8a66597, pipenum); 1575 finish_request(r8a66597, td, pipenum, td->urb, 1576 0); 1577 } 1578 } 1579 } 1580} 1581 1582static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1583{ 1584 u16 check; 1585 u16 pipenum; 1586 u16 mask; 1587 int status; 1588 1589 mask = r8a66597_read(r8a66597, NRDYSTS) 1590 & r8a66597_read(r8a66597, NRDYENB); 1591 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1592 if (mask & NRDY0) { 1593 cfifo_change(r8a66597, 0); 1594 status = get_urb_error(r8a66597, 0); 1595 pipe_irq_disable(r8a66597, 0); 1596 check_next_phase(r8a66597, status); 1597 } 1598 1599 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1600 check = 1 << pipenum; 1601 if (mask & check) { 1602 struct r8a66597_td *td; 1603 td = r8a66597_get_td(r8a66597, pipenum); 1604 if (unlikely(!td)) 1605 continue; 1606 1607 status = get_urb_error(r8a66597, pipenum); 1608 pipe_irq_disable(r8a66597, pipenum); 1609 pipe_stop(r8a66597, td->pipe); 1610 finish_request(r8a66597, td, pipenum, td->urb, status); 1611 } 1612 } 1613} 1614 1615static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1616{ 1617 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1618 u16 intsts0, intsts1, intsts2; 1619 u16 intenb0, intenb1, intenb2; 1620 u16 mask0, mask1, mask2; 1621 int status; 1622 1623 spin_lock(&r8a66597->lock); 1624 1625 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1626 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1627 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1628 intenb0 = r8a66597_read(r8a66597, INTENB0); 1629 intenb1 = r8a66597_read(r8a66597, INTENB1); 1630 intenb2 = r8a66597_read(r8a66597, INTENB2); 1631 1632 mask2 = intsts2 & intenb2; 1633 mask1 = intsts1 & intenb1; 1634 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1635 if (mask2) { 1636 if (mask2 & ATTCH) { 1637 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1638 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1639 1640 /* start usb bus sampling */ 1641 start_root_hub_sampling(r8a66597, 1, 1); 1642 } 1643 if (mask2 & DTCH) { 1644 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1645 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1646 r8a66597_usb_disconnect(r8a66597, 1); 1647 } 1648 if (mask2 & BCHG) { 1649 r8a66597_write(r8a66597, ~BCHG, INTSTS2); 1650 r8a66597_bclr(r8a66597, BCHGE, INTENB2); 1651 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1652 } 1653 } 1654 1655 if (mask1) { 1656 if (mask1 & ATTCH) { 1657 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1658 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1659 1660 /* start usb bus sampling */ 1661 start_root_hub_sampling(r8a66597, 0, 1); 1662 } 1663 if (mask1 & DTCH) { 1664 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1665 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1666 r8a66597_usb_disconnect(r8a66597, 0); 1667 } 1668 if (mask1 & BCHG) { 1669 r8a66597_write(r8a66597, ~BCHG, INTSTS1); 1670 r8a66597_bclr(r8a66597, BCHGE, INTENB1); 1671 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1672 } 1673 1674 if (mask1 & SIGN) { 1675 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1676 status = get_urb_error(r8a66597, 0); 1677 check_next_phase(r8a66597, status); 1678 } 1679 if (mask1 & SACK) { 1680 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1681 check_next_phase(r8a66597, 0); 1682 } 1683 } 1684 if (mask0) { 1685 if (mask0 & BRDY) 1686 irq_pipe_ready(r8a66597); 1687 if (mask0 & BEMP) 1688 irq_pipe_empty(r8a66597); 1689 if (mask0 & NRDY) 1690 irq_pipe_nrdy(r8a66597); 1691 } 1692 1693 spin_unlock(&r8a66597->lock); 1694 return IRQ_HANDLED; 1695} 1696 1697/* this function must be called with interrupt disabled */ 1698static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1699{ 1700 u16 tmp; 1701 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1702 1703 if (rh->port & USB_PORT_STAT_RESET) { 1704 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1705 1706 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1707 if ((tmp & USBRST) == USBRST) { 1708 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1709 dvstctr_reg); 1710 r8a66597_root_hub_start_polling(r8a66597); 1711 } else 1712 r8a66597_usb_connect(r8a66597, port); 1713 } 1714 1715 if (!(rh->port & USB_PORT_STAT_CONNECTION)) { 1716 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1717 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1718 } 1719 1720 if (rh->scount > 0) { 1721 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1722 if (tmp == rh->old_syssts) { 1723 rh->scount--; 1724 if (rh->scount == 0) 1725 r8a66597_check_syssts(r8a66597, port, tmp); 1726 else 1727 r8a66597_root_hub_start_polling(r8a66597); 1728 } else { 1729 rh->scount = R8A66597_MAX_SAMPLING; 1730 rh->old_syssts = tmp; 1731 r8a66597_root_hub_start_polling(r8a66597); 1732 } 1733 } 1734} 1735 1736static void r8a66597_interval_timer(unsigned long _r8a66597) 1737{ 1738 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1739 unsigned long flags; 1740 u16 pipenum; 1741 struct r8a66597_td *td; 1742 1743 spin_lock_irqsave(&r8a66597->lock, flags); 1744 1745 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1746 if (!(r8a66597->interval_map & (1 << pipenum))) 1747 continue; 1748 if (timer_pending(&r8a66597->interval_timer[pipenum])) 1749 continue; 1750 1751 td = r8a66597_get_td(r8a66597, pipenum); 1752 if (td) 1753 start_transfer(r8a66597, td); 1754 } 1755 1756 spin_unlock_irqrestore(&r8a66597->lock, flags); 1757} 1758 1759static void r8a66597_td_timer(unsigned long _r8a66597) 1760{ 1761 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1762 unsigned long flags; 1763 u16 pipenum; 1764 struct r8a66597_td *td, *new_td = NULL; 1765 struct r8a66597_pipe *pipe; 1766 1767 spin_lock_irqsave(&r8a66597->lock, flags); 1768 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1769 if (!(r8a66597->timeout_map & (1 << pipenum))) 1770 continue; 1771 if (timer_pending(&r8a66597->td_timer[pipenum])) 1772 continue; 1773 1774 td = r8a66597_get_td(r8a66597, pipenum); 1775 if (!td) { 1776 r8a66597->timeout_map &= ~(1 << pipenum); 1777 continue; 1778 } 1779 1780 if (td->urb->actual_length) { 1781 set_td_timer(r8a66597, td); 1782 break; 1783 } 1784 1785 pipe = td->pipe; 1786 pipe_stop(r8a66597, pipe); 1787 1788 new_td = td; 1789 do { 1790 list_move_tail(&new_td->queue, 1791 &r8a66597->pipe_queue[pipenum]); 1792 new_td = r8a66597_get_td(r8a66597, pipenum); 1793 if (!new_td) { 1794 new_td = td; 1795 break; 1796 } 1797 } while (td != new_td && td->address == new_td->address); 1798 1799 start_transfer(r8a66597, new_td); 1800 1801 if (td == new_td) 1802 r8a66597->timeout_map &= ~(1 << pipenum); 1803 else 1804 set_td_timer(r8a66597, new_td); 1805 break; 1806 } 1807 spin_unlock_irqrestore(&r8a66597->lock, flags); 1808} 1809 1810static void r8a66597_timer(unsigned long _r8a66597) 1811{ 1812 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1813 unsigned long flags; 1814 int port; 1815 1816 spin_lock_irqsave(&r8a66597->lock, flags); 1817 1818 for (port = 0; port < r8a66597->max_root_hub; port++) 1819 r8a66597_root_hub_control(r8a66597, port); 1820 1821 spin_unlock_irqrestore(&r8a66597->lock, flags); 1822} 1823 1824static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1825{ 1826 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1827 1828 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1829 (urb->dev->state == USB_STATE_CONFIGURED)) 1830 return 1; 1831 else 1832 return 0; 1833} 1834 1835static int r8a66597_start(struct usb_hcd *hcd) 1836{ 1837 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1838 1839 hcd->state = HC_STATE_RUNNING; 1840 return enable_controller(r8a66597); 1841} 1842 1843static void r8a66597_stop(struct usb_hcd *hcd) 1844{ 1845 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1846 1847 disable_controller(r8a66597); 1848} 1849 1850static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1851{ 1852 unsigned int usb_address = usb_pipedevice(urb->pipe); 1853 u16 root_port, hub_port; 1854 1855 if (usb_address == 0) { 1856 get_port_number(r8a66597, urb->dev->devpath, 1857 &root_port, &hub_port); 1858 set_devadd_reg(r8a66597, 0, 1859 get_r8a66597_usb_speed(urb->dev->speed), 1860 get_parent_r8a66597_address(r8a66597, urb->dev), 1861 hub_port, root_port); 1862 } 1863} 1864 1865static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1866 struct urb *urb, 1867 struct usb_host_endpoint *hep) 1868{ 1869 struct r8a66597_td *td; 1870 u16 pipenum; 1871 1872 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1873 if (td == NULL) 1874 return NULL; 1875 1876 pipenum = r8a66597_get_pipenum(urb, hep); 1877 td->pipenum = pipenum; 1878 td->pipe = hep->hcpriv; 1879 td->urb = urb; 1880 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1881 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1882 !usb_pipein(urb->pipe)); 1883 if (usb_pipecontrol(urb->pipe)) 1884 td->type = USB_PID_SETUP; 1885 else if (usb_pipein(urb->pipe)) 1886 td->type = USB_PID_IN; 1887 else 1888 td->type = USB_PID_OUT; 1889 INIT_LIST_HEAD(&td->queue); 1890 1891 return td; 1892} 1893 1894static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1895 struct urb *urb, 1896 gfp_t mem_flags) 1897{ 1898 struct usb_host_endpoint *hep = urb->ep; 1899 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1900 struct r8a66597_td *td = NULL; 1901 int ret, request = 0; 1902 unsigned long flags; 1903 1904 spin_lock_irqsave(&r8a66597->lock, flags); 1905 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1906 ret = -ENODEV; 1907 goto error_not_linked; 1908 } 1909 1910 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1911 if (ret) 1912 goto error_not_linked; 1913 1914 if (!hep->hcpriv) { 1915 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1916 GFP_ATOMIC); 1917 if (!hep->hcpriv) { 1918 ret = -ENOMEM; 1919 goto error; 1920 } 1921 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1922 if (usb_pipeendpoint(urb->pipe)) 1923 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1924 } 1925 1926 if (unlikely(check_pipe_config(r8a66597, urb))) 1927 init_pipe_config(r8a66597, urb); 1928 1929 set_address_zero(r8a66597, urb); 1930 td = r8a66597_make_td(r8a66597, urb, hep); 1931 if (td == NULL) { 1932 ret = -ENOMEM; 1933 goto error; 1934 } 1935 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1936 request = 1; 1937 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1938 urb->hcpriv = td; 1939 1940 if (request) { 1941 if (td->pipe->info.timer_interval) { 1942 r8a66597->interval_map |= 1 << td->pipenum; 1943 mod_timer(&r8a66597->interval_timer[td->pipenum], 1944 jiffies + msecs_to_jiffies( 1945 td->pipe->info.timer_interval)); 1946 } else { 1947 ret = start_transfer(r8a66597, td); 1948 if (ret < 0) { 1949 list_del(&td->queue); 1950 kfree(td); 1951 } 1952 } 1953 } else 1954 set_td_timer(r8a66597, td); 1955 1956error: 1957 if (ret) 1958 usb_hcd_unlink_urb_from_ep(hcd, urb); 1959error_not_linked: 1960 spin_unlock_irqrestore(&r8a66597->lock, flags); 1961 return ret; 1962} 1963 1964static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1965 int status) 1966{ 1967 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1968 struct r8a66597_td *td; 1969 unsigned long flags; 1970 int rc; 1971 1972 spin_lock_irqsave(&r8a66597->lock, flags); 1973 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1974 if (rc) 1975 goto done; 1976 1977 if (urb->hcpriv) { 1978 td = urb->hcpriv; 1979 pipe_stop(r8a66597, td->pipe); 1980 pipe_irq_disable(r8a66597, td->pipenum); 1981 disable_irq_empty(r8a66597, td->pipenum); 1982 finish_request(r8a66597, td, td->pipenum, urb, status); 1983 } 1984 done: 1985 spin_unlock_irqrestore(&r8a66597->lock, flags); 1986 return rc; 1987} 1988 1989static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1990 struct usb_host_endpoint *hep) 1991{ 1992 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1993 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1994 struct r8a66597_td *td; 1995 struct urb *urb = NULL; 1996 u16 pipenum; 1997 unsigned long flags; 1998 1999 if (pipe == NULL) 2000 return; 2001 pipenum = pipe->info.pipenum; 2002 2003 if (pipenum == 0) { 2004 kfree(hep->hcpriv); 2005 hep->hcpriv = NULL; 2006 return; 2007 } 2008 2009 spin_lock_irqsave(&r8a66597->lock, flags); 2010 pipe_stop(r8a66597, pipe); 2011 pipe_irq_disable(r8a66597, pipenum); 2012 disable_irq_empty(r8a66597, pipenum); 2013 td = r8a66597_get_td(r8a66597, pipenum); 2014 if (td) 2015 urb = td->urb; 2016 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 2017 kfree(hep->hcpriv); 2018 hep->hcpriv = NULL; 2019 spin_unlock_irqrestore(&r8a66597->lock, flags); 2020} 2021 2022static int r8a66597_get_frame(struct usb_hcd *hcd) 2023{ 2024 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2025 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 2026} 2027 2028static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 2029{ 2030 int chix; 2031 struct usb_device *childdev; 2032 2033 if (udev->state == USB_STATE_CONFIGURED && 2034 udev->parent && udev->parent->devnum > 1 && 2035 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 2036 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 2037 2038 usb_hub_for_each_child(udev, chix, childdev) 2039 collect_usb_address_map(childdev, map); 2040} 2041 2042/* this function must be called with interrupt disabled */ 2043static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 2044 int addr) 2045{ 2046 struct r8a66597_device *dev; 2047 struct list_head *list = &r8a66597->child_device; 2048 2049 list_for_each_entry(dev, list, device_list) { 2050 if (dev->usb_address != addr) 2051 continue; 2052 2053 return dev; 2054 } 2055 2056 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); 2057 return NULL; 2058} 2059 2060static void update_usb_address_map(struct r8a66597 *r8a66597, 2061 struct usb_device *root_hub, 2062 unsigned long *map) 2063{ 2064 int i, j, addr; 2065 unsigned long diff; 2066 unsigned long flags; 2067 2068 for (i = 0; i < 4; i++) { 2069 diff = r8a66597->child_connect_map[i] ^ map[i]; 2070 if (!diff) 2071 continue; 2072 2073 for (j = 0; j < 32; j++) { 2074 if (!(diff & (1 << j))) 2075 continue; 2076 2077 addr = i * 32 + j; 2078 if (map[i] & (1 << j)) 2079 set_child_connect_map(r8a66597, addr); 2080 else { 2081 struct r8a66597_device *dev; 2082 2083 spin_lock_irqsave(&r8a66597->lock, flags); 2084 dev = get_r8a66597_device(r8a66597, addr); 2085 disable_r8a66597_pipe_all(r8a66597, dev); 2086 free_usb_address(r8a66597, dev, 0); 2087 put_child_connect_map(r8a66597, addr); 2088 spin_unlock_irqrestore(&r8a66597->lock, flags); 2089 } 2090 } 2091 } 2092} 2093 2094static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2095 struct usb_hcd *hcd) 2096{ 2097 struct usb_bus *bus; 2098 unsigned long now_map[4]; 2099 2100 memset(now_map, 0, sizeof(now_map)); 2101 2102 list_for_each_entry(bus, &usb_bus_list, bus_list) { 2103 if (!bus->root_hub) 2104 continue; 2105 2106 if (bus->busnum != hcd->self.busnum) 2107 continue; 2108 2109 collect_usb_address_map(bus->root_hub, now_map); 2110 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2111 } 2112} 2113 2114static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2115{ 2116 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2117 unsigned long flags; 2118 int i; 2119 2120 r8a66597_check_detect_child(r8a66597, hcd); 2121 2122 spin_lock_irqsave(&r8a66597->lock, flags); 2123 2124 *buf = 0; /* initialize (no change) */ 2125 2126 for (i = 0; i < r8a66597->max_root_hub; i++) { 2127 if (r8a66597->root_hub[i].port & 0xffff0000) 2128 *buf |= 1 << (i + 1); 2129 } 2130 2131 spin_unlock_irqrestore(&r8a66597->lock, flags); 2132 2133 return (*buf != 0); 2134} 2135 2136static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2137 struct usb_hub_descriptor *desc) 2138{ 2139 desc->bDescriptorType = USB_DT_HUB; 2140 desc->bHubContrCurrent = 0; 2141 desc->bNbrPorts = r8a66597->max_root_hub; 2142 desc->bDescLength = 9; 2143 desc->bPwrOn2PwrGood = 0; 2144 desc->wHubCharacteristics = 2145 cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM); 2146 desc->u.hs.DeviceRemovable[0] = 2147 ((1 << r8a66597->max_root_hub) - 1) << 1; 2148 desc->u.hs.DeviceRemovable[1] = ~0; 2149} 2150 2151static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 2152 u16 wIndex, char *buf, u16 wLength) 2153{ 2154 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2155 int ret; 2156 int port = (wIndex & 0x00FF) - 1; 2157 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2158 unsigned long flags; 2159 2160 ret = 0; 2161 2162 spin_lock_irqsave(&r8a66597->lock, flags); 2163 switch (typeReq) { 2164 case ClearHubFeature: 2165 case SetHubFeature: 2166 switch (wValue) { 2167 case C_HUB_OVER_CURRENT: 2168 case C_HUB_LOCAL_POWER: 2169 break; 2170 default: 2171 goto error; 2172 } 2173 break; 2174 case ClearPortFeature: 2175 if (wIndex > r8a66597->max_root_hub) 2176 goto error; 2177 if (wLength != 0) 2178 goto error; 2179 2180 switch (wValue) { 2181 case USB_PORT_FEAT_ENABLE: 2182 rh->port &= ~USB_PORT_STAT_POWER; 2183 break; 2184 case USB_PORT_FEAT_SUSPEND: 2185 break; 2186 case USB_PORT_FEAT_POWER: 2187 r8a66597_port_power(r8a66597, port, 0); 2188 break; 2189 case USB_PORT_FEAT_C_ENABLE: 2190 case USB_PORT_FEAT_C_SUSPEND: 2191 case USB_PORT_FEAT_C_CONNECTION: 2192 case USB_PORT_FEAT_C_OVER_CURRENT: 2193 case USB_PORT_FEAT_C_RESET: 2194 break; 2195 default: 2196 goto error; 2197 } 2198 rh->port &= ~(1 << wValue); 2199 break; 2200 case GetHubDescriptor: 2201 r8a66597_hub_descriptor(r8a66597, 2202 (struct usb_hub_descriptor *)buf); 2203 break; 2204 case GetHubStatus: 2205 *buf = 0x00; 2206 break; 2207 case GetPortStatus: 2208 if (wIndex > r8a66597->max_root_hub) 2209 goto error; 2210 *(__le32 *)buf = cpu_to_le32(rh->port); 2211 break; 2212 case SetPortFeature: 2213 if (wIndex > r8a66597->max_root_hub) 2214 goto error; 2215 if (wLength != 0) 2216 goto error; 2217 2218 switch (wValue) { 2219 case USB_PORT_FEAT_SUSPEND: 2220 break; 2221 case USB_PORT_FEAT_POWER: 2222 r8a66597_port_power(r8a66597, port, 1); 2223 rh->port |= USB_PORT_STAT_POWER; 2224 break; 2225 case USB_PORT_FEAT_RESET: { 2226 struct r8a66597_device *dev = rh->dev; 2227 2228 rh->port |= USB_PORT_STAT_RESET; 2229 2230 disable_r8a66597_pipe_all(r8a66597, dev); 2231 free_usb_address(r8a66597, dev, 1); 2232 2233 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2234 get_dvstctr_reg(port)); 2235 mod_timer(&r8a66597->rh_timer, 2236 jiffies + msecs_to_jiffies(50)); 2237 } 2238 break; 2239 default: 2240 goto error; 2241 } 2242 rh->port |= 1 << wValue; 2243 break; 2244 default: 2245error: 2246 ret = -EPIPE; 2247 break; 2248 } 2249 2250 spin_unlock_irqrestore(&r8a66597->lock, flags); 2251 return ret; 2252} 2253 2254#if defined(CONFIG_PM) 2255static int r8a66597_bus_suspend(struct usb_hcd *hcd) 2256{ 2257 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2258 int port; 2259 2260 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); 2261 2262 for (port = 0; port < r8a66597->max_root_hub; port++) { 2263 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2264 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2265 2266 if (!(rh->port & USB_PORT_STAT_ENABLE)) 2267 continue; 2268 2269 dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port); 2270 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ 2271 rh->port |= USB_PORT_STAT_SUSPEND; 2272 2273 if (rh->dev->udev->do_remote_wakeup) { 2274 msleep(3); /* waiting last SOF */ 2275 r8a66597_bset(r8a66597, RWUPE, dvstctr_reg); 2276 r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port)); 2277 r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port)); 2278 } 2279 } 2280 2281 r8a66597->bus_suspended = 1; 2282 2283 return 0; 2284} 2285 2286static int r8a66597_bus_resume(struct usb_hcd *hcd) 2287{ 2288 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2289 int port; 2290 2291 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); 2292 2293 for (port = 0; port < r8a66597->max_root_hub; port++) { 2294 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2295 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2296 2297 if (!(rh->port & USB_PORT_STAT_SUSPEND)) 2298 continue; 2299 2300 dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port); 2301 rh->port &= ~USB_PORT_STAT_SUSPEND; 2302 rh->port |= USB_PORT_STAT_C_SUSPEND << 16; 2303 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg); 2304 msleep(USB_RESUME_TIMEOUT); 2305 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg); 2306 } 2307 2308 return 0; 2309 2310} 2311#else 2312#define r8a66597_bus_suspend NULL 2313#define r8a66597_bus_resume NULL 2314#endif 2315 2316static struct hc_driver r8a66597_hc_driver = { 2317 .description = hcd_name, 2318 .hcd_priv_size = sizeof(struct r8a66597), 2319 .irq = r8a66597_irq, 2320 2321 /* 2322 * generic hardware linkage 2323 */ 2324 .flags = HCD_USB2, 2325 2326 .start = r8a66597_start, 2327 .stop = r8a66597_stop, 2328 2329 /* 2330 * managing i/o requests and associated device resources 2331 */ 2332 .urb_enqueue = r8a66597_urb_enqueue, 2333 .urb_dequeue = r8a66597_urb_dequeue, 2334 .endpoint_disable = r8a66597_endpoint_disable, 2335 2336 /* 2337 * periodic schedule support 2338 */ 2339 .get_frame_number = r8a66597_get_frame, 2340 2341 /* 2342 * root hub support 2343 */ 2344 .hub_status_data = r8a66597_hub_status_data, 2345 .hub_control = r8a66597_hub_control, 2346 .bus_suspend = r8a66597_bus_suspend, 2347 .bus_resume = r8a66597_bus_resume, 2348}; 2349 2350#if defined(CONFIG_PM) 2351static int r8a66597_suspend(struct device *dev) 2352{ 2353 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2354 int port; 2355 2356 dev_dbg(dev, "%s\n", __func__); 2357 2358 disable_controller(r8a66597); 2359 2360 for (port = 0; port < r8a66597->max_root_hub; port++) { 2361 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2362 2363 rh->port = 0x00000000; 2364 } 2365 2366 return 0; 2367} 2368 2369static int r8a66597_resume(struct device *dev) 2370{ 2371 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2372 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2373 2374 dev_dbg(dev, "%s\n", __func__); 2375 2376 enable_controller(r8a66597); 2377 usb_root_hub_lost_power(hcd->self.root_hub); 2378 2379 return 0; 2380} 2381 2382static const struct dev_pm_ops r8a66597_dev_pm_ops = { 2383 .suspend = r8a66597_suspend, 2384 .resume = r8a66597_resume, 2385 .poweroff = r8a66597_suspend, 2386 .restore = r8a66597_resume, 2387}; 2388 2389#define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops) 2390#else /* if defined(CONFIG_PM) */ 2391#define R8A66597_DEV_PM_OPS NULL 2392#endif 2393 2394static int r8a66597_remove(struct platform_device *pdev) 2395{ 2396 struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); 2397 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2398 2399 del_timer_sync(&r8a66597->rh_timer); 2400 usb_remove_hcd(hcd); 2401 iounmap(r8a66597->reg); 2402 if (r8a66597->pdata->on_chip) 2403 clk_put(r8a66597->clk); 2404 usb_put_hcd(hcd); 2405 return 0; 2406} 2407 2408static int r8a66597_probe(struct platform_device *pdev) 2409{ 2410 char clk_name[8]; 2411 struct resource *res = NULL, *ires; 2412 int irq = -1; 2413 void __iomem *reg = NULL; 2414 struct usb_hcd *hcd = NULL; 2415 struct r8a66597 *r8a66597; 2416 int ret = 0; 2417 int i; 2418 unsigned long irq_trigger; 2419 2420 if (usb_disabled()) 2421 return -ENODEV; 2422 2423 if (pdev->dev.dma_mask) { 2424 ret = -EINVAL; 2425 dev_err(&pdev->dev, "dma not supported\n"); 2426 goto clean_up; 2427 } 2428 2429 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2430 if (!res) { 2431 ret = -ENODEV; 2432 dev_err(&pdev->dev, "platform_get_resource error.\n"); 2433 goto clean_up; 2434 } 2435 2436 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2437 if (!ires) { 2438 ret = -ENODEV; 2439 dev_err(&pdev->dev, 2440 "platform_get_resource IORESOURCE_IRQ error.\n"); 2441 goto clean_up; 2442 } 2443 2444 irq = ires->start; 2445 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 2446 2447 reg = ioremap(res->start, resource_size(res)); 2448 if (reg == NULL) { 2449 ret = -ENOMEM; 2450 dev_err(&pdev->dev, "ioremap error.\n"); 2451 goto clean_up; 2452 } 2453 2454 if (pdev->dev.platform_data == NULL) { 2455 dev_err(&pdev->dev, "no platform data\n"); 2456 ret = -ENODEV; 2457 goto clean_up; 2458 } 2459 2460 /* initialize hcd */ 2461 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2462 if (!hcd) { 2463 ret = -ENOMEM; 2464 dev_err(&pdev->dev, "Failed to create hcd\n"); 2465 goto clean_up; 2466 } 2467 r8a66597 = hcd_to_r8a66597(hcd); 2468 memset(r8a66597, 0, sizeof(struct r8a66597)); 2469 platform_set_drvdata(pdev, r8a66597); 2470 r8a66597->pdata = dev_get_platdata(&pdev->dev); 2471 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; 2472 2473 if (r8a66597->pdata->on_chip) { 2474 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); 2475 r8a66597->clk = clk_get(&pdev->dev, clk_name); 2476 if (IS_ERR(r8a66597->clk)) { 2477 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", 2478 clk_name); 2479 ret = PTR_ERR(r8a66597->clk); 2480 goto clean_up2; 2481 } 2482 r8a66597->max_root_hub = 1; 2483 } else 2484 r8a66597->max_root_hub = 2; 2485 2486 spin_lock_init(&r8a66597->lock); 2487 setup_timer(&r8a66597->rh_timer, r8a66597_timer, 2488 (unsigned long)r8a66597); 2489 r8a66597->reg = reg; 2490 2491 /* make sure no interrupts are pending */ 2492 ret = r8a66597_clock_enable(r8a66597); 2493 if (ret < 0) 2494 goto clean_up3; 2495 disable_controller(r8a66597); 2496 2497 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2498 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2499 setup_timer(&r8a66597->td_timer[i], r8a66597_td_timer, 2500 (unsigned long)r8a66597); 2501 setup_timer(&r8a66597->interval_timer[i], 2502 r8a66597_interval_timer, 2503 (unsigned long)r8a66597); 2504 } 2505 INIT_LIST_HEAD(&r8a66597->child_device); 2506 2507 hcd->rsrc_start = res->start; 2508 hcd->has_tt = 1; 2509 2510 ret = usb_add_hcd(hcd, irq, irq_trigger); 2511 if (ret != 0) { 2512 dev_err(&pdev->dev, "Failed to add hcd\n"); 2513 goto clean_up3; 2514 } 2515 device_wakeup_enable(hcd->self.controller); 2516 2517 return 0; 2518 2519clean_up3: 2520 if (r8a66597->pdata->on_chip) 2521 clk_put(r8a66597->clk); 2522clean_up2: 2523 usb_put_hcd(hcd); 2524 2525clean_up: 2526 if (reg) 2527 iounmap(reg); 2528 2529 return ret; 2530} 2531 2532static struct platform_driver r8a66597_driver = { 2533 .probe = r8a66597_probe, 2534 .remove = r8a66597_remove, 2535 .driver = { 2536 .name = hcd_name, 2537 .pm = R8A66597_DEV_PM_OPS, 2538 }, 2539}; 2540 2541module_platform_driver(r8a66597_driver); 2542