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/errno.h> 30 #include <linux/init.h> 31 #include <linux/timer.h> 32 #include <linux/delay.h> 33 #include <linux/list.h> 34 #include <linux/interrupt.h> 35 #include <linux/usb.h> 36 #include <linux/platform_device.h> 37 #include <linux/io.h> 38 #include <linux/irq.h> 39 40 #include "../core/hcd.h" 41 #include "r8a66597.h" 42 43 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); 44 MODULE_LICENSE("GPL"); 45 MODULE_AUTHOR("Yoshihiro Shimoda"); 46 MODULE_ALIAS("platform:r8a66597_hcd"); 47 48 #define DRIVER_VERSION "2009-05-26" 49 50 static const char hcd_name[] = "r8a66597_hcd"; 51 52 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 53 static int r8a66597_get_frame(struct usb_hcd *hcd); 54 55 /* this function must be called with interrupt disabled */ 56 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 57 unsigned long reg) 58 { 59 u16 tmp; 60 61 tmp = r8a66597_read(r8a66597, INTENB0); 62 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 63 r8a66597_bset(r8a66597, 1 << pipenum, reg); 64 r8a66597_write(r8a66597, tmp, INTENB0); 65 } 66 67 /* this function must be called with interrupt disabled */ 68 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 69 unsigned long reg) 70 { 71 u16 tmp; 72 73 tmp = r8a66597_read(r8a66597, INTENB0); 74 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 75 r8a66597_bclr(r8a66597, 1 << pipenum, reg); 76 r8a66597_write(r8a66597, tmp, INTENB0); 77 } 78 79 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, 80 u16 usbspd, u8 upphub, u8 hubport, int port) 81 { 82 u16 val; 83 unsigned long devadd_reg = get_devadd_addr(r8a66597_address); 84 85 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); 86 r8a66597_write(r8a66597, val, devadd_reg); 87 } 88 89 static int r8a66597_clock_enable(struct r8a66597 *r8a66597) 90 { 91 u16 tmp; 92 int i = 0; 93 94 if (r8a66597->pdata->on_chip) { 95 #ifdef CONFIG_HAVE_CLK 96 clk_enable(r8a66597->clk); 97 #endif 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 } 134 135 static 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 #ifdef CONFIG_HAVE_CLK 142 clk_disable(r8a66597->clk); 143 #endif 144 } else { 145 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 146 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 147 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 148 } 149 } 150 151 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) 152 { 153 u16 val; 154 155 val = port ? DRPD : DCFM | DRPD; 156 r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); 157 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 158 159 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); 160 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); 161 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 162 } 163 164 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) 165 { 166 u16 val, tmp; 167 168 r8a66597_write(r8a66597, 0, get_intenb_reg(port)); 169 r8a66597_write(r8a66597, 0, get_intsts_reg(port)); 170 171 r8a66597_port_power(r8a66597, port, 0); 172 173 do { 174 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; 175 udelay(640); 176 } while (tmp == EDGESTS); 177 178 val = port ? DRPD : DCFM | DRPD; 179 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); 180 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 181 } 182 183 static int enable_controller(struct r8a66597 *r8a66597) 184 { 185 int ret, port; 186 u16 vif = r8a66597->pdata->vif ? LDRV : 0; 187 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; 188 u16 endian = r8a66597->pdata->endian ? BIGEND : 0; 189 190 ret = r8a66597_clock_enable(r8a66597); 191 if (ret < 0) 192 return ret; 193 194 r8a66597_bset(r8a66597, vif & LDRV, PINCFG); 195 r8a66597_bset(r8a66597, USBE, SYSCFG0); 196 197 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 198 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); 199 r8a66597_bset(r8a66597, BRDY0, BRDYENB); 200 r8a66597_bset(r8a66597, BEMP0, BEMPENB); 201 202 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); 203 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); 204 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); 205 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); 206 207 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); 208 209 for (port = 0; port < r8a66597->max_root_hub; port++) 210 r8a66597_enable_port(r8a66597, port); 211 212 return 0; 213 } 214 215 static void disable_controller(struct r8a66597 *r8a66597) 216 { 217 int port; 218 219 r8a66597_write(r8a66597, 0, INTENB0); 220 r8a66597_write(r8a66597, 0, INTSTS0); 221 222 for (port = 0; port < r8a66597->max_root_hub; port++) 223 r8a66597_disable_port(r8a66597, port); 224 225 r8a66597_clock_disable(r8a66597); 226 } 227 228 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, 229 struct usb_device *udev) 230 { 231 struct r8a66597_device *dev; 232 233 if (udev->parent && udev->parent->devnum != 1) 234 udev = udev->parent; 235 236 dev = dev_get_drvdata(&udev->dev); 237 if (dev) 238 return dev->address; 239 else 240 return 0; 241 } 242 243 static int is_child_device(char *devpath) 244 { 245 return (devpath[2] ? 1 : 0); 246 } 247 248 static int is_hub_limit(char *devpath) 249 { 250 return ((strlen(devpath) >= 4) ? 1 : 0); 251 } 252 253 static void get_port_number(struct r8a66597 *r8a66597, 254 char *devpath, u16 *root_port, u16 *hub_port) 255 { 256 if (root_port) { 257 *root_port = (devpath[0] & 0x0F) - 1; 258 if (*root_port >= r8a66597->max_root_hub) 259 printk(KERN_ERR "r8a66597: Illegal root port number.\n"); 260 } 261 if (hub_port) 262 *hub_port = devpath[2] & 0x0F; 263 } 264 265 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) 266 { 267 u16 usbspd = 0; 268 269 switch (speed) { 270 case USB_SPEED_LOW: 271 usbspd = LSMODE; 272 break; 273 case USB_SPEED_FULL: 274 usbspd = FSMODE; 275 break; 276 case USB_SPEED_HIGH: 277 usbspd = HSMODE; 278 break; 279 default: 280 printk(KERN_ERR "r8a66597: unknown speed\n"); 281 break; 282 } 283 284 return usbspd; 285 } 286 287 static void set_child_connect_map(struct r8a66597 *r8a66597, int address) 288 { 289 int idx; 290 291 idx = address / 32; 292 r8a66597->child_connect_map[idx] |= 1 << (address % 32); 293 } 294 295 static void put_child_connect_map(struct r8a66597 *r8a66597, int address) 296 { 297 int idx; 298 299 idx = address / 32; 300 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); 301 } 302 303 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) 304 { 305 u16 pipenum = pipe->info.pipenum; 306 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; 307 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; 308 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; 309 310 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ 311 dma_ch = R8A66597_PIPE_NO_DMA; 312 313 pipe->fifoaddr = fifoaddr[dma_ch]; 314 pipe->fifosel = fifosel[dma_ch]; 315 pipe->fifoctr = fifoctr[dma_ch]; 316 317 if (pipenum == 0) 318 pipe->pipectr = DCPCTR; 319 else 320 pipe->pipectr = get_pipectr_addr(pipenum); 321 322 if (check_bulk_or_isoc(pipenum)) { 323 pipe->pipetre = get_pipetre_addr(pipenum); 324 pipe->pipetrn = get_pipetrn_addr(pipenum); 325 } else { 326 pipe->pipetre = 0; 327 pipe->pipetrn = 0; 328 } 329 } 330 331 static struct r8a66597_device * 332 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) 333 { 334 if (usb_pipedevice(urb->pipe) == 0) 335 return &r8a66597->device0; 336 337 return dev_get_drvdata(&urb->dev->dev); 338 } 339 340 static int make_r8a66597_device(struct r8a66597 *r8a66597, 341 struct urb *urb, u8 addr) 342 { 343 struct r8a66597_device *dev; 344 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 345 346 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); 347 if (dev == NULL) 348 return -ENOMEM; 349 350 dev_set_drvdata(&urb->dev->dev, dev); 351 dev->udev = urb->dev; 352 dev->address = addr; 353 dev->usb_address = usb_address; 354 dev->state = USB_STATE_ADDRESS; 355 dev->ep_in_toggle = 0; 356 dev->ep_out_toggle = 0; 357 INIT_LIST_HEAD(&dev->device_list); 358 list_add_tail(&dev->device_list, &r8a66597->child_device); 359 360 get_port_number(r8a66597, urb->dev->devpath, 361 &dev->root_port, &dev->hub_port); 362 if (!is_child_device(urb->dev->devpath)) 363 r8a66597->root_hub[dev->root_port].dev = dev; 364 365 set_devadd_reg(r8a66597, dev->address, 366 get_r8a66597_usb_speed(urb->dev->speed), 367 get_parent_r8a66597_address(r8a66597, urb->dev), 368 dev->hub_port, dev->root_port); 369 370 return 0; 371 } 372 373 /* this function must be called with interrupt disabled */ 374 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) 375 { 376 u8 addr; /* R8A66597's address */ 377 struct r8a66597_device *dev; 378 379 if (is_hub_limit(urb->dev->devpath)) { 380 dev_err(&urb->dev->dev, "External hub limit reached.\n"); 381 return 0; 382 } 383 384 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 385 if (dev && dev->state >= USB_STATE_ADDRESS) 386 return dev->address; 387 388 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { 389 if (r8a66597->address_map & (1 << addr)) 390 continue; 391 392 dbg("alloc_address: r8a66597_addr=%d", addr); 393 r8a66597->address_map |= 1 << addr; 394 395 if (make_r8a66597_device(r8a66597, urb, addr) < 0) 396 return 0; 397 398 return addr; 399 } 400 401 dev_err(&urb->dev->dev, 402 "cannot communicate with a USB device more than 10.(%x)\n", 403 r8a66597->address_map); 404 405 return 0; 406 } 407 408 /* this function must be called with interrupt disabled */ 409 static void free_usb_address(struct r8a66597 *r8a66597, 410 struct r8a66597_device *dev) 411 { 412 int port; 413 414 if (!dev) 415 return; 416 417 dbg("free_addr: addr=%d", dev->address); 418 419 dev->state = USB_STATE_DEFAULT; 420 r8a66597->address_map &= ~(1 << dev->address); 421 dev->address = 0; 422 dev_set_drvdata(&dev->udev->dev, NULL); 423 list_del(&dev->device_list); 424 kfree(dev); 425 426 for (port = 0; port < r8a66597->max_root_hub; port++) { 427 if (r8a66597->root_hub[port].dev == dev) { 428 r8a66597->root_hub[port].dev = NULL; 429 break; 430 } 431 } 432 } 433 434 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, 435 u16 mask, u16 loop) 436 { 437 u16 tmp; 438 int i = 0; 439 440 do { 441 tmp = r8a66597_read(r8a66597, reg); 442 if (i++ > 1000000) { 443 printk(KERN_ERR "r8a66597: register%lx, loop %x " 444 "is timeout\n", reg, loop); 445 break; 446 } 447 ndelay(1); 448 } while ((tmp & mask) != loop); 449 } 450 451 /* this function must be called with interrupt disabled */ 452 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 453 { 454 u16 tmp; 455 456 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 457 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ 458 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 459 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); 460 } 461 462 /* this function must be called with interrupt disabled */ 463 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 464 { 465 u16 tmp; 466 467 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 468 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ 469 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); 470 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 471 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); 472 } 473 474 /* this function must be called with interrupt disabled */ 475 static void clear_all_buffer(struct r8a66597 *r8a66597, 476 struct r8a66597_pipe *pipe) 477 { 478 u16 tmp; 479 480 if (!pipe || pipe->info.pipenum == 0) 481 return; 482 483 pipe_stop(r8a66597, pipe); 484 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 485 tmp = r8a66597_read(r8a66597, pipe->pipectr); 486 tmp = r8a66597_read(r8a66597, pipe->pipectr); 487 tmp = r8a66597_read(r8a66597, pipe->pipectr); 488 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 489 } 490 491 /* this function must be called with interrupt disabled */ 492 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 493 struct r8a66597_pipe *pipe, int toggle) 494 { 495 if (toggle) 496 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 497 else 498 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 499 } 500 501 static inline unsigned short mbw_value(struct r8a66597 *r8a66597) 502 { 503 if (r8a66597->pdata->on_chip) 504 return MBW_32; 505 else 506 return MBW_16; 507 } 508 509 /* this function must be called with interrupt disabled */ 510 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 511 { 512 unsigned short mbw = mbw_value(r8a66597); 513 514 r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL); 515 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 516 } 517 518 /* this function must be called with interrupt disabled */ 519 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 520 struct r8a66597_pipe *pipe) 521 { 522 unsigned short mbw = mbw_value(r8a66597); 523 524 cfifo_change(r8a66597, 0); 525 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL); 526 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL); 527 528 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE, 529 pipe->fifosel); 530 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 531 } 532 533 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 534 { 535 struct r8a66597_pipe *pipe = hep->hcpriv; 536 537 if (usb_pipeendpoint(urb->pipe) == 0) 538 return 0; 539 else 540 return pipe->info.pipenum; 541 } 542 543 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 544 { 545 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 546 547 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 548 } 549 550 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 551 int urb_pipe) 552 { 553 if (!dev) 554 return NULL; 555 556 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 557 } 558 559 /* this function must be called with interrupt disabled */ 560 static void pipe_toggle_set(struct r8a66597 *r8a66597, 561 struct r8a66597_pipe *pipe, 562 struct urb *urb, int set) 563 { 564 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 565 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 566 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 567 568 if (!toggle) 569 return; 570 571 if (set) 572 *toggle |= 1 << endpoint; 573 else 574 *toggle &= ~(1 << endpoint); 575 } 576 577 /* this function must be called with interrupt disabled */ 578 static void pipe_toggle_save(struct r8a66597 *r8a66597, 579 struct r8a66597_pipe *pipe, 580 struct urb *urb) 581 { 582 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 583 pipe_toggle_set(r8a66597, pipe, urb, 1); 584 else 585 pipe_toggle_set(r8a66597, pipe, urb, 0); 586 } 587 588 /* this function must be called with interrupt disabled */ 589 static void pipe_toggle_restore(struct r8a66597 *r8a66597, 590 struct r8a66597_pipe *pipe, 591 struct urb *urb) 592 { 593 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 594 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 595 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 596 597 if (!toggle) 598 return; 599 600 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 601 } 602 603 /* this function must be called with interrupt disabled */ 604 static void pipe_buffer_setting(struct r8a66597 *r8a66597, 605 struct r8a66597_pipe_info *info) 606 { 607 u16 val = 0; 608 609 if (info->pipenum == 0) 610 return; 611 612 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 613 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 614 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 615 if (!info->dir_in) 616 val |= R8A66597_DIR; 617 if (info->type == R8A66597_BULK && info->dir_in) 618 val |= R8A66597_DBLB | R8A66597_SHTNAK; 619 val |= info->type | info->epnum; 620 r8a66597_write(r8a66597, val, PIPECFG); 621 622 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 623 PIPEBUF); 624 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 625 PIPEMAXP); 626 r8a66597_write(r8a66597, info->interval, PIPEPERI); 627 } 628 629 /* this function must be called with interrupt disabled */ 630 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 631 { 632 struct r8a66597_pipe_info *info; 633 struct urb *urb = td->urb; 634 635 if (td->pipenum > 0) { 636 info = &td->pipe->info; 637 cfifo_change(r8a66597, 0); 638 pipe_buffer_setting(r8a66597, info); 639 640 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 641 usb_pipeout(urb->pipe)) && 642 !usb_pipecontrol(urb->pipe)) { 643 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 644 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 645 clear_all_buffer(r8a66597, td->pipe); 646 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 647 usb_pipeout(urb->pipe), 1); 648 } 649 pipe_toggle_restore(r8a66597, td->pipe, urb); 650 } 651 } 652 653 /* this function must be called with interrupt disabled */ 654 static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 655 struct usb_endpoint_descriptor *ep) 656 { 657 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 658 659 memset(array, 0, sizeof(array)); 660 switch (usb_endpoint_type(ep)) { 661 case USB_ENDPOINT_XFER_BULK: 662 if (usb_endpoint_dir_in(ep)) 663 array[i++] = 4; 664 else { 665 array[i++] = 3; 666 array[i++] = 5; 667 } 668 break; 669 case USB_ENDPOINT_XFER_INT: 670 if (usb_endpoint_dir_in(ep)) { 671 array[i++] = 6; 672 array[i++] = 7; 673 array[i++] = 8; 674 } else 675 array[i++] = 9; 676 break; 677 case USB_ENDPOINT_XFER_ISOC: 678 if (usb_endpoint_dir_in(ep)) 679 array[i++] = 2; 680 else 681 array[i++] = 1; 682 break; 683 default: 684 printk(KERN_ERR "r8a66597: Illegal type\n"); 685 return 0; 686 } 687 688 i = 1; 689 min = array[0]; 690 while (array[i] != 0) { 691 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 692 min = array[i]; 693 i++; 694 } 695 696 return min; 697 } 698 699 static u16 get_r8a66597_type(__u8 type) 700 { 701 u16 r8a66597_type; 702 703 switch (type) { 704 case USB_ENDPOINT_XFER_BULK: 705 r8a66597_type = R8A66597_BULK; 706 break; 707 case USB_ENDPOINT_XFER_INT: 708 r8a66597_type = R8A66597_INT; 709 break; 710 case USB_ENDPOINT_XFER_ISOC: 711 r8a66597_type = R8A66597_ISO; 712 break; 713 default: 714 printk(KERN_ERR "r8a66597: Illegal type\n"); 715 r8a66597_type = 0x0000; 716 break; 717 } 718 719 return r8a66597_type; 720 } 721 722 static u16 get_bufnum(u16 pipenum) 723 { 724 u16 bufnum = 0; 725 726 if (pipenum == 0) 727 bufnum = 0; 728 else if (check_bulk_or_isoc(pipenum)) 729 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 730 else if (check_interrupt(pipenum)) 731 bufnum = 4 + (pipenum - 6); 732 else 733 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 734 735 return bufnum; 736 } 737 738 static u16 get_buf_bsize(u16 pipenum) 739 { 740 u16 buf_bsize = 0; 741 742 if (pipenum == 0) 743 buf_bsize = 3; 744 else if (check_bulk_or_isoc(pipenum)) 745 buf_bsize = R8A66597_BUF_BSIZE - 1; 746 else if (check_interrupt(pipenum)) 747 buf_bsize = 0; 748 else 749 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 750 751 return buf_bsize; 752 } 753 754 /* this function must be called with interrupt disabled */ 755 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 756 struct r8a66597_device *dev, 757 struct r8a66597_pipe *pipe, 758 struct urb *urb) 759 { 760 int i; 761 struct r8a66597_pipe_info *info = &pipe->info; 762 unsigned short mbw = mbw_value(r8a66597); 763 764 /* pipe dma is only for external controlles */ 765 if (r8a66597->pdata->on_chip) 766 return; 767 768 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 769 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 770 if ((r8a66597->dma_map & (1 << i)) != 0) 771 continue; 772 773 dev_info(&dev->udev->dev, 774 "address %d, EndpointAddress 0x%02x use " 775 "DMA FIFO\n", usb_pipedevice(urb->pipe), 776 info->dir_in ? 777 USB_ENDPOINT_DIR_MASK + info->epnum 778 : info->epnum); 779 780 r8a66597->dma_map |= 1 << i; 781 dev->dma_map |= 1 << i; 782 set_pipe_reg_addr(pipe, i); 783 784 cfifo_change(r8a66597, 0); 785 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, 786 mbw | CURPIPE, pipe->fifosel); 787 788 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 789 pipe->info.pipenum); 790 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 791 break; 792 } 793 } 794 } 795 796 /* this function must be called with interrupt disabled */ 797 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 798 struct usb_host_endpoint *hep, 799 struct r8a66597_pipe_info *info) 800 { 801 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 802 struct r8a66597_pipe *pipe = hep->hcpriv; 803 804 dbg("enable_pipe:"); 805 806 pipe->info = *info; 807 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 808 r8a66597->pipe_cnt[pipe->info.pipenum]++; 809 dev->pipe_cnt[pipe->info.pipenum]++; 810 811 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 812 } 813 814 /* this function must be called with interrupt disabled */ 815 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 816 { 817 struct r8a66597_td *td, *next; 818 struct urb *urb; 819 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 820 821 if (list_empty(list)) 822 return; 823 824 list_for_each_entry_safe(td, next, list, queue) { 825 if (td->address != address) 826 continue; 827 828 urb = td->urb; 829 list_del(&td->queue); 830 kfree(td); 831 832 if (urb) { 833 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), 834 urb); 835 836 spin_unlock(&r8a66597->lock); 837 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, 838 -ENODEV); 839 spin_lock(&r8a66597->lock); 840 } 841 break; 842 } 843 } 844 845 /* this function must be called with interrupt disabled */ 846 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 847 struct r8a66597_device *dev) 848 { 849 int check_ep0 = 0; 850 u16 pipenum; 851 852 if (!dev) 853 return; 854 855 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 856 if (!dev->pipe_cnt[pipenum]) 857 continue; 858 859 if (!check_ep0) { 860 check_ep0 = 1; 861 force_dequeue(r8a66597, 0, dev->address); 862 } 863 864 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 865 dev->pipe_cnt[pipenum] = 0; 866 force_dequeue(r8a66597, pipenum, dev->address); 867 } 868 869 dbg("disable_pipe"); 870 871 r8a66597->dma_map &= ~(dev->dma_map); 872 dev->dma_map = 0; 873 } 874 875 static u16 get_interval(struct urb *urb, __u8 interval) 876 { 877 u16 time = 1; 878 int i; 879 880 if (urb->dev->speed == USB_SPEED_HIGH) { 881 if (interval > IITV) 882 time = IITV; 883 else 884 time = interval ? interval - 1 : 0; 885 } else { 886 if (interval > 128) { 887 time = IITV; 888 } else { 889 /* calculate the nearest value for PIPEPERI */ 890 for (i = 0; i < 7; i++) { 891 if ((1 << i) < interval && 892 (1 << (i + 1) > interval)) 893 time = 1 << i; 894 } 895 } 896 } 897 898 return time; 899 } 900 901 static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 902 { 903 __u8 i; 904 unsigned long time = 1; 905 906 if (usb_pipeisoc(urb->pipe)) 907 return 0; 908 909 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 910 for (i = 0; i < (interval - 1); i++) 911 time *= 2; 912 time = time * 125 / 1000; /* uSOF -> msec */ 913 } else { 914 time = interval; 915 } 916 917 return time; 918 } 919 920 /* this function must be called with interrupt disabled */ 921 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 922 struct usb_host_endpoint *hep, 923 struct usb_endpoint_descriptor *ep) 924 { 925 struct r8a66597_pipe_info info; 926 927 info.pipenum = get_empty_pipenum(r8a66597, ep); 928 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 929 info.epnum = usb_endpoint_num(ep); 930 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize); 931 info.type = get_r8a66597_type(usb_endpoint_type(ep)); 932 info.bufnum = get_bufnum(info.pipenum); 933 info.buf_bsize = get_buf_bsize(info.pipenum); 934 if (info.type == R8A66597_BULK) { 935 info.interval = 0; 936 info.timer_interval = 0; 937 } else { 938 info.interval = get_interval(urb, ep->bInterval); 939 info.timer_interval = get_timer_interval(urb, ep->bInterval); 940 } 941 if (usb_endpoint_dir_in(ep)) 942 info.dir_in = 1; 943 else 944 info.dir_in = 0; 945 946 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 947 } 948 949 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 950 { 951 struct r8a66597_device *dev; 952 953 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 954 dev->state = USB_STATE_CONFIGURED; 955 } 956 957 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 958 u16 pipenum) 959 { 960 if (pipenum == 0 && usb_pipeout(urb->pipe)) 961 enable_irq_empty(r8a66597, pipenum); 962 else 963 enable_irq_ready(r8a66597, pipenum); 964 965 if (!usb_pipeisoc(urb->pipe)) 966 enable_irq_nrdy(r8a66597, pipenum); 967 } 968 969 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 970 { 971 disable_irq_ready(r8a66597, pipenum); 972 disable_irq_nrdy(r8a66597, pipenum); 973 } 974 975 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 976 { 977 mod_timer(&r8a66597->rh_timer, 978 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 979 } 980 981 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, 982 int connect) 983 { 984 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 985 986 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 987 rh->scount = R8A66597_MAX_SAMPLING; 988 if (connect) 989 rh->port |= 1 << USB_PORT_FEAT_CONNECTION; 990 else 991 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION); 992 rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION; 993 994 r8a66597_root_hub_start_polling(r8a66597); 995 } 996 997 /* this function must be called with interrupt disabled */ 998 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 999 u16 syssts) 1000 { 1001 if (syssts == SE0) { 1002 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1003 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1004 } else { 1005 if (syssts == FS_JSTS) 1006 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 1007 else if (syssts == LS_JSTS) 1008 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 1009 1010 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 1011 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 1012 1013 if (r8a66597->bus_suspended) 1014 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1015 } 1016 1017 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597)); 1018 } 1019 1020 /* this function must be called with interrupt disabled */ 1021 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 1022 { 1023 u16 speed = get_rh_usb_speed(r8a66597, port); 1024 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1025 1026 rh->port &= ~((1 << USB_PORT_FEAT_HIGHSPEED) | 1027 (1 << USB_PORT_FEAT_LOWSPEED)); 1028 if (speed == HSMODE) 1029 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED); 1030 else if (speed == LSMODE) 1031 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED); 1032 1033 rh->port &= ~(1 << USB_PORT_FEAT_RESET); 1034 rh->port |= 1 << USB_PORT_FEAT_ENABLE; 1035 } 1036 1037 /* this function must be called with interrupt disabled */ 1038 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1039 { 1040 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1041 1042 disable_r8a66597_pipe_all(r8a66597, dev); 1043 free_usb_address(r8a66597, dev); 1044 1045 start_root_hub_sampling(r8a66597, port, 0); 1046 } 1047 1048 /* this function must be called with interrupt disabled */ 1049 static void prepare_setup_packet(struct r8a66597 *r8a66597, 1050 struct r8a66597_td *td) 1051 { 1052 int i; 1053 __le16 *p = (__le16 *)td->urb->setup_packet; 1054 unsigned long setup_addr = USBREQ; 1055 1056 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1057 DCPMAXP); 1058 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1059 1060 for (i = 0; i < 4; i++) { 1061 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1062 setup_addr += 2; 1063 } 1064 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1065 } 1066 1067 /* this function must be called with interrupt disabled */ 1068 static void prepare_packet_read(struct r8a66597 *r8a66597, 1069 struct r8a66597_td *td) 1070 { 1071 struct urb *urb = td->urb; 1072 1073 if (usb_pipecontrol(urb->pipe)) { 1074 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1075 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1076 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1077 if (urb->actual_length == 0) { 1078 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1079 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1080 } 1081 pipe_irq_disable(r8a66597, td->pipenum); 1082 pipe_start(r8a66597, td->pipe); 1083 pipe_irq_enable(r8a66597, urb, td->pipenum); 1084 } else { 1085 if (urb->actual_length == 0) { 1086 pipe_irq_disable(r8a66597, td->pipenum); 1087 pipe_setting(r8a66597, td); 1088 pipe_stop(r8a66597, td->pipe); 1089 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1090 1091 if (td->pipe->pipetre) { 1092 r8a66597_write(r8a66597, TRCLR, 1093 td->pipe->pipetre); 1094 r8a66597_write(r8a66597, 1095 DIV_ROUND_UP 1096 (urb->transfer_buffer_length, 1097 td->maxpacket), 1098 td->pipe->pipetrn); 1099 r8a66597_bset(r8a66597, TRENB, 1100 td->pipe->pipetre); 1101 } 1102 1103 pipe_start(r8a66597, td->pipe); 1104 pipe_irq_enable(r8a66597, urb, td->pipenum); 1105 } 1106 } 1107 } 1108 1109 /* this function must be called with interrupt disabled */ 1110 static void prepare_packet_write(struct r8a66597 *r8a66597, 1111 struct r8a66597_td *td) 1112 { 1113 u16 tmp; 1114 struct urb *urb = td->urb; 1115 1116 if (usb_pipecontrol(urb->pipe)) { 1117 pipe_stop(r8a66597, td->pipe); 1118 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1119 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1120 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1121 if (urb->actual_length == 0) { 1122 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1123 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1124 } 1125 } else { 1126 if (urb->actual_length == 0) 1127 pipe_setting(r8a66597, td); 1128 if (td->pipe->pipetre) 1129 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1130 } 1131 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1132 1133 fifo_change_from_pipe(r8a66597, td->pipe); 1134 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1135 if (unlikely((tmp & FRDY) == 0)) 1136 pipe_irq_enable(r8a66597, urb, td->pipenum); 1137 else 1138 packet_write(r8a66597, td->pipenum); 1139 pipe_start(r8a66597, td->pipe); 1140 } 1141 1142 /* this function must be called with interrupt disabled */ 1143 static void prepare_status_packet(struct r8a66597 *r8a66597, 1144 struct r8a66597_td *td) 1145 { 1146 struct urb *urb = td->urb; 1147 1148 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1149 pipe_stop(r8a66597, td->pipe); 1150 1151 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1152 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1153 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1154 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1155 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1156 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1157 enable_irq_empty(r8a66597, 0); 1158 } else { 1159 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1160 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1161 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1162 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1163 enable_irq_ready(r8a66597, 0); 1164 } 1165 enable_irq_nrdy(r8a66597, 0); 1166 pipe_start(r8a66597, td->pipe); 1167 } 1168 1169 static int is_set_address(unsigned char *setup_packet) 1170 { 1171 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1172 setup_packet[1] == USB_REQ_SET_ADDRESS) 1173 return 1; 1174 else 1175 return 0; 1176 } 1177 1178 /* this function must be called with interrupt disabled */ 1179 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1180 { 1181 BUG_ON(!td); 1182 1183 switch (td->type) { 1184 case USB_PID_SETUP: 1185 if (is_set_address(td->urb->setup_packet)) { 1186 td->set_address = 1; 1187 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1188 td->urb); 1189 if (td->urb->setup_packet[2] == 0) 1190 return -EPIPE; 1191 } 1192 prepare_setup_packet(r8a66597, td); 1193 break; 1194 case USB_PID_IN: 1195 prepare_packet_read(r8a66597, td); 1196 break; 1197 case USB_PID_OUT: 1198 prepare_packet_write(r8a66597, td); 1199 break; 1200 case USB_PID_ACK: 1201 prepare_status_packet(r8a66597, td); 1202 break; 1203 default: 1204 printk(KERN_ERR "r8a66597: invalid type.\n"); 1205 break; 1206 } 1207 1208 return 0; 1209 } 1210 1211 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1212 { 1213 if (usb_pipeisoc(urb->pipe)) { 1214 if (urb->number_of_packets == td->iso_cnt) 1215 return 1; 1216 } 1217 1218 /* control or bulk or interrupt */ 1219 if ((urb->transfer_buffer_length <= urb->actual_length) || 1220 (td->short_packet) || (td->zero_packet)) 1221 return 1; 1222 1223 return 0; 1224 } 1225 1226 /* this function must be called with interrupt disabled */ 1227 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1228 { 1229 unsigned long time; 1230 1231 BUG_ON(!td); 1232 1233 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1234 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1235 r8a66597->timeout_map |= 1 << td->pipenum; 1236 switch (usb_pipetype(td->urb->pipe)) { 1237 case PIPE_INTERRUPT: 1238 case PIPE_ISOCHRONOUS: 1239 time = 30; 1240 break; 1241 default: 1242 time = 300; 1243 break; 1244 } 1245 1246 mod_timer(&r8a66597->td_timer[td->pipenum], 1247 jiffies + msecs_to_jiffies(time)); 1248 } 1249 } 1250 1251 /* this function must be called with interrupt disabled */ 1252 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1253 u16 pipenum, struct urb *urb, int status) 1254 __releases(r8a66597->lock) __acquires(r8a66597->lock) 1255 { 1256 int restart = 0; 1257 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1258 1259 r8a66597->timeout_map &= ~(1 << pipenum); 1260 1261 if (likely(td)) { 1262 if (td->set_address && (status != 0 || urb->unlinked)) 1263 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1264 1265 pipe_toggle_save(r8a66597, td->pipe, urb); 1266 list_del(&td->queue); 1267 kfree(td); 1268 } 1269 1270 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1271 restart = 1; 1272 1273 if (likely(urb)) { 1274 if (usb_pipeisoc(urb->pipe)) 1275 urb->start_frame = r8a66597_get_frame(hcd); 1276 1277 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 1278 spin_unlock(&r8a66597->lock); 1279 usb_hcd_giveback_urb(hcd, urb, status); 1280 spin_lock(&r8a66597->lock); 1281 } 1282 1283 if (restart) { 1284 td = r8a66597_get_td(r8a66597, pipenum); 1285 if (unlikely(!td)) 1286 return; 1287 1288 start_transfer(r8a66597, td); 1289 set_td_timer(r8a66597, td); 1290 } 1291 } 1292 1293 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1294 { 1295 u16 tmp; 1296 int rcv_len, bufsize, urb_len, size; 1297 u16 *buf; 1298 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1299 struct urb *urb; 1300 int finish = 0; 1301 int status = 0; 1302 1303 if (unlikely(!td)) 1304 return; 1305 urb = td->urb; 1306 1307 fifo_change_from_pipe(r8a66597, td->pipe); 1308 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1309 if (unlikely((tmp & FRDY) == 0)) { 1310 pipe_stop(r8a66597, td->pipe); 1311 pipe_irq_disable(r8a66597, pipenum); 1312 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); 1313 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1314 return; 1315 } 1316 1317 /* prepare parameters */ 1318 rcv_len = tmp & DTLN; 1319 if (usb_pipeisoc(urb->pipe)) { 1320 buf = (u16 *)(urb->transfer_buffer + 1321 urb->iso_frame_desc[td->iso_cnt].offset); 1322 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1323 } else { 1324 buf = (void *)urb->transfer_buffer + urb->actual_length; 1325 urb_len = urb->transfer_buffer_length - urb->actual_length; 1326 } 1327 bufsize = min(urb_len, (int) td->maxpacket); 1328 if (rcv_len <= bufsize) { 1329 size = rcv_len; 1330 } else { 1331 size = bufsize; 1332 status = -EOVERFLOW; 1333 finish = 1; 1334 } 1335 1336 /* update parameters */ 1337 urb->actual_length += size; 1338 if (rcv_len == 0) 1339 td->zero_packet = 1; 1340 if (rcv_len < bufsize) { 1341 td->short_packet = 1; 1342 } 1343 if (usb_pipeisoc(urb->pipe)) { 1344 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1345 urb->iso_frame_desc[td->iso_cnt].status = status; 1346 td->iso_cnt++; 1347 finish = 0; 1348 } 1349 1350 /* check transfer finish */ 1351 if (finish || check_transfer_finish(td, urb)) { 1352 pipe_stop(r8a66597, td->pipe); 1353 pipe_irq_disable(r8a66597, pipenum); 1354 finish = 1; 1355 } 1356 1357 /* read fifo */ 1358 if (urb->transfer_buffer) { 1359 if (size == 0) 1360 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1361 else 1362 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1363 buf, size); 1364 } 1365 1366 if (finish && pipenum != 0) 1367 finish_request(r8a66597, td, pipenum, urb, status); 1368 } 1369 1370 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1371 { 1372 u16 tmp; 1373 int bufsize, size; 1374 u16 *buf; 1375 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1376 struct urb *urb; 1377 1378 if (unlikely(!td)) 1379 return; 1380 urb = td->urb; 1381 1382 fifo_change_from_pipe(r8a66597, td->pipe); 1383 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1384 if (unlikely((tmp & FRDY) == 0)) { 1385 pipe_stop(r8a66597, td->pipe); 1386 pipe_irq_disable(r8a66597, pipenum); 1387 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); 1388 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1389 return; 1390 } 1391 1392 /* prepare parameters */ 1393 bufsize = td->maxpacket; 1394 if (usb_pipeisoc(urb->pipe)) { 1395 buf = (u16 *)(urb->transfer_buffer + 1396 urb->iso_frame_desc[td->iso_cnt].offset); 1397 size = min(bufsize, 1398 (int)urb->iso_frame_desc[td->iso_cnt].length); 1399 } else { 1400 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1401 size = min_t(u32, bufsize, 1402 urb->transfer_buffer_length - urb->actual_length); 1403 } 1404 1405 /* write fifo */ 1406 if (pipenum > 0) 1407 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1408 if (urb->transfer_buffer) { 1409 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size); 1410 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1411 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1412 } 1413 1414 /* update parameters */ 1415 urb->actual_length += size; 1416 if (usb_pipeisoc(urb->pipe)) { 1417 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1418 urb->iso_frame_desc[td->iso_cnt].status = 0; 1419 td->iso_cnt++; 1420 } 1421 1422 /* check transfer finish */ 1423 if (check_transfer_finish(td, urb)) { 1424 disable_irq_ready(r8a66597, pipenum); 1425 enable_irq_empty(r8a66597, pipenum); 1426 if (!usb_pipeisoc(urb->pipe)) 1427 enable_irq_nrdy(r8a66597, pipenum); 1428 } else 1429 pipe_irq_enable(r8a66597, urb, pipenum); 1430 } 1431 1432 1433 static void check_next_phase(struct r8a66597 *r8a66597, int status) 1434 { 1435 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1436 struct urb *urb; 1437 u8 finish = 0; 1438 1439 if (unlikely(!td)) 1440 return; 1441 urb = td->urb; 1442 1443 switch (td->type) { 1444 case USB_PID_IN: 1445 case USB_PID_OUT: 1446 if (check_transfer_finish(td, urb)) 1447 td->type = USB_PID_ACK; 1448 break; 1449 case USB_PID_SETUP: 1450 if (urb->transfer_buffer_length == urb->actual_length) 1451 td->type = USB_PID_ACK; 1452 else if (usb_pipeout(urb->pipe)) 1453 td->type = USB_PID_OUT; 1454 else 1455 td->type = USB_PID_IN; 1456 break; 1457 case USB_PID_ACK: 1458 finish = 1; 1459 break; 1460 } 1461 1462 if (finish || status != 0 || urb->unlinked) 1463 finish_request(r8a66597, td, 0, urb, status); 1464 else 1465 start_transfer(r8a66597, td); 1466 } 1467 1468 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1469 { 1470 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1471 1472 if (td) { 1473 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1474 1475 if (pid == PID_NAK) 1476 return -ECONNRESET; 1477 else 1478 return -EPIPE; 1479 } 1480 return 0; 1481 } 1482 1483 static void irq_pipe_ready(struct r8a66597 *r8a66597) 1484 { 1485 u16 check; 1486 u16 pipenum; 1487 u16 mask; 1488 struct r8a66597_td *td; 1489 1490 mask = r8a66597_read(r8a66597, BRDYSTS) 1491 & r8a66597_read(r8a66597, BRDYENB); 1492 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1493 if (mask & BRDY0) { 1494 td = r8a66597_get_td(r8a66597, 0); 1495 if (td && td->type == USB_PID_IN) 1496 packet_read(r8a66597, 0); 1497 else 1498 pipe_irq_disable(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 td = r8a66597_get_td(r8a66597, pipenum); 1506 if (unlikely(!td)) 1507 continue; 1508 1509 if (td->type == USB_PID_IN) 1510 packet_read(r8a66597, pipenum); 1511 else if (td->type == USB_PID_OUT) 1512 packet_write(r8a66597, pipenum); 1513 } 1514 } 1515 } 1516 1517 static void irq_pipe_empty(struct r8a66597 *r8a66597) 1518 { 1519 u16 tmp; 1520 u16 check; 1521 u16 pipenum; 1522 u16 mask; 1523 struct r8a66597_td *td; 1524 1525 mask = r8a66597_read(r8a66597, BEMPSTS) 1526 & r8a66597_read(r8a66597, BEMPENB); 1527 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1528 if (mask & BEMP0) { 1529 cfifo_change(r8a66597, 0); 1530 td = r8a66597_get_td(r8a66597, 0); 1531 if (td && td->type != USB_PID_OUT) 1532 disable_irq_empty(r8a66597, 0); 1533 check_next_phase(r8a66597, 0); 1534 } 1535 1536 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1537 check = 1 << pipenum; 1538 if (mask & check) { 1539 struct r8a66597_td *td; 1540 td = r8a66597_get_td(r8a66597, pipenum); 1541 if (unlikely(!td)) 1542 continue; 1543 1544 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1545 if ((tmp & INBUFM) == 0) { 1546 disable_irq_empty(r8a66597, pipenum); 1547 pipe_irq_disable(r8a66597, pipenum); 1548 finish_request(r8a66597, td, pipenum, td->urb, 1549 0); 1550 } 1551 } 1552 } 1553 } 1554 1555 static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1556 { 1557 u16 check; 1558 u16 pipenum; 1559 u16 mask; 1560 int status; 1561 1562 mask = r8a66597_read(r8a66597, NRDYSTS) 1563 & r8a66597_read(r8a66597, NRDYENB); 1564 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1565 if (mask & NRDY0) { 1566 cfifo_change(r8a66597, 0); 1567 status = get_urb_error(r8a66597, 0); 1568 pipe_irq_disable(r8a66597, 0); 1569 check_next_phase(r8a66597, status); 1570 } 1571 1572 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1573 check = 1 << pipenum; 1574 if (mask & check) { 1575 struct r8a66597_td *td; 1576 td = r8a66597_get_td(r8a66597, pipenum); 1577 if (unlikely(!td)) 1578 continue; 1579 1580 status = get_urb_error(r8a66597, pipenum); 1581 pipe_irq_disable(r8a66597, pipenum); 1582 pipe_stop(r8a66597, td->pipe); 1583 finish_request(r8a66597, td, pipenum, td->urb, status); 1584 } 1585 } 1586 } 1587 1588 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1589 { 1590 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1591 u16 intsts0, intsts1, intsts2; 1592 u16 intenb0, intenb1, intenb2; 1593 u16 mask0, mask1, mask2; 1594 int status; 1595 1596 spin_lock(&r8a66597->lock); 1597 1598 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1599 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1600 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1601 intenb0 = r8a66597_read(r8a66597, INTENB0); 1602 intenb1 = r8a66597_read(r8a66597, INTENB1); 1603 intenb2 = r8a66597_read(r8a66597, INTENB2); 1604 1605 mask2 = intsts2 & intenb2; 1606 mask1 = intsts1 & intenb1; 1607 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1608 if (mask2) { 1609 if (mask2 & ATTCH) { 1610 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1611 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1612 1613 /* start usb bus sampling */ 1614 start_root_hub_sampling(r8a66597, 1, 1); 1615 } 1616 if (mask2 & DTCH) { 1617 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1618 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1619 r8a66597_usb_disconnect(r8a66597, 1); 1620 } 1621 if (mask2 & BCHG) { 1622 r8a66597_write(r8a66597, ~BCHG, INTSTS2); 1623 r8a66597_bclr(r8a66597, BCHGE, INTENB2); 1624 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1625 } 1626 } 1627 1628 if (mask1) { 1629 if (mask1 & ATTCH) { 1630 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1631 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1632 1633 /* start usb bus sampling */ 1634 start_root_hub_sampling(r8a66597, 0, 1); 1635 } 1636 if (mask1 & DTCH) { 1637 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1638 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1639 r8a66597_usb_disconnect(r8a66597, 0); 1640 } 1641 if (mask1 & BCHG) { 1642 r8a66597_write(r8a66597, ~BCHG, INTSTS1); 1643 r8a66597_bclr(r8a66597, BCHGE, INTENB1); 1644 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1645 } 1646 1647 if (mask1 & SIGN) { 1648 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1649 status = get_urb_error(r8a66597, 0); 1650 check_next_phase(r8a66597, status); 1651 } 1652 if (mask1 & SACK) { 1653 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1654 check_next_phase(r8a66597, 0); 1655 } 1656 } 1657 if (mask0) { 1658 if (mask0 & BRDY) 1659 irq_pipe_ready(r8a66597); 1660 if (mask0 & BEMP) 1661 irq_pipe_empty(r8a66597); 1662 if (mask0 & NRDY) 1663 irq_pipe_nrdy(r8a66597); 1664 } 1665 1666 spin_unlock(&r8a66597->lock); 1667 return IRQ_HANDLED; 1668 } 1669 1670 /* this function must be called with interrupt disabled */ 1671 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1672 { 1673 u16 tmp; 1674 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1675 1676 if (rh->port & (1 << USB_PORT_FEAT_RESET)) { 1677 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1678 1679 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1680 if ((tmp & USBRST) == USBRST) { 1681 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1682 dvstctr_reg); 1683 r8a66597_root_hub_start_polling(r8a66597); 1684 } else 1685 r8a66597_usb_connect(r8a66597, port); 1686 } 1687 1688 if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) { 1689 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1690 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1691 } 1692 1693 if (rh->scount > 0) { 1694 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1695 if (tmp == rh->old_syssts) { 1696 rh->scount--; 1697 if (rh->scount == 0) 1698 r8a66597_check_syssts(r8a66597, port, tmp); 1699 else 1700 r8a66597_root_hub_start_polling(r8a66597); 1701 } else { 1702 rh->scount = R8A66597_MAX_SAMPLING; 1703 rh->old_syssts = tmp; 1704 r8a66597_root_hub_start_polling(r8a66597); 1705 } 1706 } 1707 } 1708 1709 static void r8a66597_interval_timer(unsigned long _r8a66597) 1710 { 1711 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1712 unsigned long flags; 1713 u16 pipenum; 1714 struct r8a66597_td *td; 1715 1716 spin_lock_irqsave(&r8a66597->lock, flags); 1717 1718 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1719 if (!(r8a66597->interval_map & (1 << pipenum))) 1720 continue; 1721 if (timer_pending(&r8a66597->interval_timer[pipenum])) 1722 continue; 1723 1724 td = r8a66597_get_td(r8a66597, pipenum); 1725 if (td) 1726 start_transfer(r8a66597, td); 1727 } 1728 1729 spin_unlock_irqrestore(&r8a66597->lock, flags); 1730 } 1731 1732 static void r8a66597_td_timer(unsigned long _r8a66597) 1733 { 1734 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1735 unsigned long flags; 1736 u16 pipenum; 1737 struct r8a66597_td *td, *new_td = NULL; 1738 struct r8a66597_pipe *pipe; 1739 1740 spin_lock_irqsave(&r8a66597->lock, flags); 1741 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1742 if (!(r8a66597->timeout_map & (1 << pipenum))) 1743 continue; 1744 if (timer_pending(&r8a66597->td_timer[pipenum])) 1745 continue; 1746 1747 td = r8a66597_get_td(r8a66597, pipenum); 1748 if (!td) { 1749 r8a66597->timeout_map &= ~(1 << pipenum); 1750 continue; 1751 } 1752 1753 if (td->urb->actual_length) { 1754 set_td_timer(r8a66597, td); 1755 break; 1756 } 1757 1758 pipe = td->pipe; 1759 pipe_stop(r8a66597, pipe); 1760 1761 new_td = td; 1762 do { 1763 list_move_tail(&new_td->queue, 1764 &r8a66597->pipe_queue[pipenum]); 1765 new_td = r8a66597_get_td(r8a66597, pipenum); 1766 if (!new_td) { 1767 new_td = td; 1768 break; 1769 } 1770 } while (td != new_td && td->address == new_td->address); 1771 1772 start_transfer(r8a66597, new_td); 1773 1774 if (td == new_td) 1775 r8a66597->timeout_map &= ~(1 << pipenum); 1776 else 1777 set_td_timer(r8a66597, new_td); 1778 break; 1779 } 1780 spin_unlock_irqrestore(&r8a66597->lock, flags); 1781 } 1782 1783 static void r8a66597_timer(unsigned long _r8a66597) 1784 { 1785 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1786 unsigned long flags; 1787 int port; 1788 1789 spin_lock_irqsave(&r8a66597->lock, flags); 1790 1791 for (port = 0; port < r8a66597->max_root_hub; port++) 1792 r8a66597_root_hub_control(r8a66597, port); 1793 1794 spin_unlock_irqrestore(&r8a66597->lock, flags); 1795 } 1796 1797 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1798 { 1799 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1800 1801 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1802 (urb->dev->state == USB_STATE_CONFIGURED)) 1803 return 1; 1804 else 1805 return 0; 1806 } 1807 1808 static int r8a66597_start(struct usb_hcd *hcd) 1809 { 1810 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1811 1812 hcd->state = HC_STATE_RUNNING; 1813 return enable_controller(r8a66597); 1814 } 1815 1816 static void r8a66597_stop(struct usb_hcd *hcd) 1817 { 1818 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1819 1820 disable_controller(r8a66597); 1821 } 1822 1823 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1824 { 1825 unsigned int usb_address = usb_pipedevice(urb->pipe); 1826 u16 root_port, hub_port; 1827 1828 if (usb_address == 0) { 1829 get_port_number(r8a66597, urb->dev->devpath, 1830 &root_port, &hub_port); 1831 set_devadd_reg(r8a66597, 0, 1832 get_r8a66597_usb_speed(urb->dev->speed), 1833 get_parent_r8a66597_address(r8a66597, urb->dev), 1834 hub_port, root_port); 1835 } 1836 } 1837 1838 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1839 struct urb *urb, 1840 struct usb_host_endpoint *hep) 1841 { 1842 struct r8a66597_td *td; 1843 u16 pipenum; 1844 1845 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1846 if (td == NULL) 1847 return NULL; 1848 1849 pipenum = r8a66597_get_pipenum(urb, hep); 1850 td->pipenum = pipenum; 1851 td->pipe = hep->hcpriv; 1852 td->urb = urb; 1853 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1854 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1855 !usb_pipein(urb->pipe)); 1856 if (usb_pipecontrol(urb->pipe)) 1857 td->type = USB_PID_SETUP; 1858 else if (usb_pipein(urb->pipe)) 1859 td->type = USB_PID_IN; 1860 else 1861 td->type = USB_PID_OUT; 1862 INIT_LIST_HEAD(&td->queue); 1863 1864 return td; 1865 } 1866 1867 static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1868 struct urb *urb, 1869 gfp_t mem_flags) 1870 { 1871 struct usb_host_endpoint *hep = urb->ep; 1872 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1873 struct r8a66597_td *td = NULL; 1874 int ret, request = 0; 1875 unsigned long flags; 1876 1877 spin_lock_irqsave(&r8a66597->lock, flags); 1878 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1879 ret = -ENODEV; 1880 goto error_not_linked; 1881 } 1882 1883 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1884 if (ret) 1885 goto error_not_linked; 1886 1887 if (!hep->hcpriv) { 1888 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1889 GFP_ATOMIC); 1890 if (!hep->hcpriv) { 1891 ret = -ENOMEM; 1892 goto error; 1893 } 1894 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1895 if (usb_pipeendpoint(urb->pipe)) 1896 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1897 } 1898 1899 if (unlikely(check_pipe_config(r8a66597, urb))) 1900 init_pipe_config(r8a66597, urb); 1901 1902 set_address_zero(r8a66597, urb); 1903 td = r8a66597_make_td(r8a66597, urb, hep); 1904 if (td == NULL) { 1905 ret = -ENOMEM; 1906 goto error; 1907 } 1908 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1909 request = 1; 1910 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1911 urb->hcpriv = td; 1912 1913 if (request) { 1914 if (td->pipe->info.timer_interval) { 1915 r8a66597->interval_map |= 1 << td->pipenum; 1916 mod_timer(&r8a66597->interval_timer[td->pipenum], 1917 jiffies + msecs_to_jiffies( 1918 td->pipe->info.timer_interval)); 1919 } else { 1920 ret = start_transfer(r8a66597, td); 1921 if (ret < 0) { 1922 list_del(&td->queue); 1923 kfree(td); 1924 } 1925 } 1926 } else 1927 set_td_timer(r8a66597, td); 1928 1929 error: 1930 if (ret) 1931 usb_hcd_unlink_urb_from_ep(hcd, urb); 1932 error_not_linked: 1933 spin_unlock_irqrestore(&r8a66597->lock, flags); 1934 return ret; 1935 } 1936 1937 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1938 int status) 1939 { 1940 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1941 struct r8a66597_td *td; 1942 unsigned long flags; 1943 int rc; 1944 1945 spin_lock_irqsave(&r8a66597->lock, flags); 1946 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1947 if (rc) 1948 goto done; 1949 1950 if (urb->hcpriv) { 1951 td = urb->hcpriv; 1952 pipe_stop(r8a66597, td->pipe); 1953 pipe_irq_disable(r8a66597, td->pipenum); 1954 disable_irq_empty(r8a66597, td->pipenum); 1955 finish_request(r8a66597, td, td->pipenum, urb, status); 1956 } 1957 done: 1958 spin_unlock_irqrestore(&r8a66597->lock, flags); 1959 return rc; 1960 } 1961 1962 static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1963 struct usb_host_endpoint *hep) 1964 { 1965 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1966 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1967 struct r8a66597_td *td; 1968 struct urb *urb = NULL; 1969 u16 pipenum; 1970 unsigned long flags; 1971 1972 if (pipe == NULL) 1973 return; 1974 pipenum = pipe->info.pipenum; 1975 1976 if (pipenum == 0) { 1977 kfree(hep->hcpriv); 1978 hep->hcpriv = NULL; 1979 return; 1980 } 1981 1982 spin_lock_irqsave(&r8a66597->lock, flags); 1983 pipe_stop(r8a66597, pipe); 1984 pipe_irq_disable(r8a66597, pipenum); 1985 disable_irq_empty(r8a66597, pipenum); 1986 td = r8a66597_get_td(r8a66597, pipenum); 1987 if (td) 1988 urb = td->urb; 1989 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 1990 kfree(hep->hcpriv); 1991 hep->hcpriv = NULL; 1992 spin_unlock_irqrestore(&r8a66597->lock, flags); 1993 } 1994 1995 static int r8a66597_get_frame(struct usb_hcd *hcd) 1996 { 1997 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1998 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 1999 } 2000 2001 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 2002 { 2003 int chix; 2004 2005 if (udev->state == USB_STATE_CONFIGURED && 2006 udev->parent && udev->parent->devnum > 1 && 2007 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 2008 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 2009 2010 for (chix = 0; chix < udev->maxchild; chix++) { 2011 struct usb_device *childdev = udev->children[chix]; 2012 2013 if (childdev) 2014 collect_usb_address_map(childdev, map); 2015 } 2016 } 2017 2018 /* this function must be called with interrupt disabled */ 2019 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 2020 int addr) 2021 { 2022 struct r8a66597_device *dev; 2023 struct list_head *list = &r8a66597->child_device; 2024 2025 list_for_each_entry(dev, list, device_list) { 2026 if (dev->usb_address != addr) 2027 continue; 2028 2029 return dev; 2030 } 2031 2032 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); 2033 return NULL; 2034 } 2035 2036 static void update_usb_address_map(struct r8a66597 *r8a66597, 2037 struct usb_device *root_hub, 2038 unsigned long *map) 2039 { 2040 int i, j, addr; 2041 unsigned long diff; 2042 unsigned long flags; 2043 2044 for (i = 0; i < 4; i++) { 2045 diff = r8a66597->child_connect_map[i] ^ map[i]; 2046 if (!diff) 2047 continue; 2048 2049 for (j = 0; j < 32; j++) { 2050 if (!(diff & (1 << j))) 2051 continue; 2052 2053 addr = i * 32 + j; 2054 if (map[i] & (1 << j)) 2055 set_child_connect_map(r8a66597, addr); 2056 else { 2057 struct r8a66597_device *dev; 2058 2059 spin_lock_irqsave(&r8a66597->lock, flags); 2060 dev = get_r8a66597_device(r8a66597, addr); 2061 disable_r8a66597_pipe_all(r8a66597, dev); 2062 free_usb_address(r8a66597, dev); 2063 put_child_connect_map(r8a66597, addr); 2064 spin_unlock_irqrestore(&r8a66597->lock, flags); 2065 } 2066 } 2067 } 2068 } 2069 2070 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2071 struct usb_hcd *hcd) 2072 { 2073 struct usb_bus *bus; 2074 unsigned long now_map[4]; 2075 2076 memset(now_map, 0, sizeof(now_map)); 2077 2078 list_for_each_entry(bus, &usb_bus_list, bus_list) { 2079 if (!bus->root_hub) 2080 continue; 2081 2082 if (bus->busnum != hcd->self.busnum) 2083 continue; 2084 2085 collect_usb_address_map(bus->root_hub, now_map); 2086 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2087 } 2088 } 2089 2090 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2091 { 2092 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2093 unsigned long flags; 2094 int i; 2095 2096 r8a66597_check_detect_child(r8a66597, hcd); 2097 2098 spin_lock_irqsave(&r8a66597->lock, flags); 2099 2100 *buf = 0; /* initialize (no change) */ 2101 2102 for (i = 0; i < r8a66597->max_root_hub; i++) { 2103 if (r8a66597->root_hub[i].port & 0xffff0000) 2104 *buf |= 1 << (i + 1); 2105 } 2106 2107 spin_unlock_irqrestore(&r8a66597->lock, flags); 2108 2109 return (*buf != 0); 2110 } 2111 2112 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2113 struct usb_hub_descriptor *desc) 2114 { 2115 desc->bDescriptorType = 0x29; 2116 desc->bHubContrCurrent = 0; 2117 desc->bNbrPorts = r8a66597->max_root_hub; 2118 desc->bDescLength = 9; 2119 desc->bPwrOn2PwrGood = 0; 2120 desc->wHubCharacteristics = cpu_to_le16(0x0011); 2121 desc->bitmap[0] = ((1 << r8a66597->max_root_hub) - 1) << 1; 2122 desc->bitmap[1] = ~0; 2123 } 2124 2125 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 2126 u16 wIndex, char *buf, u16 wLength) 2127 { 2128 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2129 int ret; 2130 int port = (wIndex & 0x00FF) - 1; 2131 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2132 unsigned long flags; 2133 2134 ret = 0; 2135 2136 spin_lock_irqsave(&r8a66597->lock, flags); 2137 switch (typeReq) { 2138 case ClearHubFeature: 2139 case SetHubFeature: 2140 switch (wValue) { 2141 case C_HUB_OVER_CURRENT: 2142 case C_HUB_LOCAL_POWER: 2143 break; 2144 default: 2145 goto error; 2146 } 2147 break; 2148 case ClearPortFeature: 2149 if (wIndex > r8a66597->max_root_hub) 2150 goto error; 2151 if (wLength != 0) 2152 goto error; 2153 2154 switch (wValue) { 2155 case USB_PORT_FEAT_ENABLE: 2156 rh->port &= ~(1 << USB_PORT_FEAT_POWER); 2157 break; 2158 case USB_PORT_FEAT_SUSPEND: 2159 break; 2160 case USB_PORT_FEAT_POWER: 2161 r8a66597_port_power(r8a66597, port, 0); 2162 break; 2163 case USB_PORT_FEAT_C_ENABLE: 2164 case USB_PORT_FEAT_C_SUSPEND: 2165 case USB_PORT_FEAT_C_CONNECTION: 2166 case USB_PORT_FEAT_C_OVER_CURRENT: 2167 case USB_PORT_FEAT_C_RESET: 2168 break; 2169 default: 2170 goto error; 2171 } 2172 rh->port &= ~(1 << wValue); 2173 break; 2174 case GetHubDescriptor: 2175 r8a66597_hub_descriptor(r8a66597, 2176 (struct usb_hub_descriptor *)buf); 2177 break; 2178 case GetHubStatus: 2179 *buf = 0x00; 2180 break; 2181 case GetPortStatus: 2182 if (wIndex > r8a66597->max_root_hub) 2183 goto error; 2184 *(__le32 *)buf = cpu_to_le32(rh->port); 2185 break; 2186 case SetPortFeature: 2187 if (wIndex > r8a66597->max_root_hub) 2188 goto error; 2189 if (wLength != 0) 2190 goto error; 2191 2192 switch (wValue) { 2193 case USB_PORT_FEAT_SUSPEND: 2194 break; 2195 case USB_PORT_FEAT_POWER: 2196 r8a66597_port_power(r8a66597, port, 1); 2197 rh->port |= (1 << USB_PORT_FEAT_POWER); 2198 break; 2199 case USB_PORT_FEAT_RESET: { 2200 struct r8a66597_device *dev = rh->dev; 2201 2202 rh->port |= (1 << USB_PORT_FEAT_RESET); 2203 2204 disable_r8a66597_pipe_all(r8a66597, dev); 2205 free_usb_address(r8a66597, dev); 2206 2207 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2208 get_dvstctr_reg(port)); 2209 mod_timer(&r8a66597->rh_timer, 2210 jiffies + msecs_to_jiffies(50)); 2211 } 2212 break; 2213 default: 2214 goto error; 2215 } 2216 rh->port |= 1 << wValue; 2217 break; 2218 default: 2219 error: 2220 ret = -EPIPE; 2221 break; 2222 } 2223 2224 spin_unlock_irqrestore(&r8a66597->lock, flags); 2225 return ret; 2226 } 2227 2228 #if defined(CONFIG_PM) 2229 static int r8a66597_bus_suspend(struct usb_hcd *hcd) 2230 { 2231 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2232 int port; 2233 2234 dbg("%s", __func__); 2235 2236 for (port = 0; port < r8a66597->max_root_hub; port++) { 2237 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2238 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2239 2240 if (!(rh->port & (1 << USB_PORT_FEAT_ENABLE))) 2241 continue; 2242 2243 dbg("suspend port = %d", port); 2244 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ 2245 rh->port |= 1 << USB_PORT_FEAT_SUSPEND; 2246 2247 if (rh->dev->udev->do_remote_wakeup) { 2248 msleep(3); /* waiting last SOF */ 2249 r8a66597_bset(r8a66597, RWUPE, dvstctr_reg); 2250 r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port)); 2251 r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port)); 2252 } 2253 } 2254 2255 r8a66597->bus_suspended = 1; 2256 2257 return 0; 2258 } 2259 2260 static int r8a66597_bus_resume(struct usb_hcd *hcd) 2261 { 2262 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2263 int port; 2264 2265 dbg("%s", __func__); 2266 2267 for (port = 0; port < r8a66597->max_root_hub; port++) { 2268 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2269 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2270 2271 if (!(rh->port & (1 << USB_PORT_FEAT_SUSPEND))) 2272 continue; 2273 2274 dbg("resume port = %d", port); 2275 rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND); 2276 rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND; 2277 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg); 2278 msleep(50); 2279 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg); 2280 } 2281 2282 return 0; 2283 2284 } 2285 #else 2286 #define r8a66597_bus_suspend NULL 2287 #define r8a66597_bus_resume NULL 2288 #endif 2289 2290 static struct hc_driver r8a66597_hc_driver = { 2291 .description = hcd_name, 2292 .hcd_priv_size = sizeof(struct r8a66597), 2293 .irq = r8a66597_irq, 2294 2295 /* 2296 * generic hardware linkage 2297 */ 2298 .flags = HCD_USB2, 2299 2300 .start = r8a66597_start, 2301 .stop = r8a66597_stop, 2302 2303 /* 2304 * managing i/o requests and associated device resources 2305 */ 2306 .urb_enqueue = r8a66597_urb_enqueue, 2307 .urb_dequeue = r8a66597_urb_dequeue, 2308 .endpoint_disable = r8a66597_endpoint_disable, 2309 2310 /* 2311 * periodic schedule support 2312 */ 2313 .get_frame_number = r8a66597_get_frame, 2314 2315 /* 2316 * root hub support 2317 */ 2318 .hub_status_data = r8a66597_hub_status_data, 2319 .hub_control = r8a66597_hub_control, 2320 .bus_suspend = r8a66597_bus_suspend, 2321 .bus_resume = r8a66597_bus_resume, 2322 }; 2323 2324 #if defined(CONFIG_PM) 2325 static int r8a66597_suspend(struct device *dev) 2326 { 2327 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2328 int port; 2329 2330 dbg("%s", __func__); 2331 2332 disable_controller(r8a66597); 2333 2334 for (port = 0; port < r8a66597->max_root_hub; port++) { 2335 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2336 2337 rh->port = 0x00000000; 2338 } 2339 2340 return 0; 2341 } 2342 2343 static int r8a66597_resume(struct device *dev) 2344 { 2345 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2346 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2347 2348 dbg("%s", __func__); 2349 2350 enable_controller(r8a66597); 2351 usb_root_hub_lost_power(hcd->self.root_hub); 2352 2353 return 0; 2354 } 2355 2356 static const struct dev_pm_ops r8a66597_dev_pm_ops = { 2357 .suspend = r8a66597_suspend, 2358 .resume = r8a66597_resume, 2359 .poweroff = r8a66597_suspend, 2360 .restore = r8a66597_resume, 2361 }; 2362 2363 #define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops) 2364 #else /* if defined(CONFIG_PM) */ 2365 #define R8A66597_DEV_PM_OPS NULL 2366 #endif 2367 2368 static int __init_or_module r8a66597_remove(struct platform_device *pdev) 2369 { 2370 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); 2371 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2372 2373 del_timer_sync(&r8a66597->rh_timer); 2374 usb_remove_hcd(hcd); 2375 iounmap((void *)r8a66597->reg); 2376 #ifdef CONFIG_HAVE_CLK 2377 if (r8a66597->pdata->on_chip) 2378 clk_put(r8a66597->clk); 2379 #endif 2380 usb_put_hcd(hcd); 2381 return 0; 2382 } 2383 2384 static int __devinit r8a66597_probe(struct platform_device *pdev) 2385 { 2386 #ifdef CONFIG_HAVE_CLK 2387 char clk_name[8]; 2388 #endif 2389 struct resource *res = NULL, *ires; 2390 int irq = -1; 2391 void __iomem *reg = NULL; 2392 struct usb_hcd *hcd = NULL; 2393 struct r8a66597 *r8a66597; 2394 int ret = 0; 2395 int i; 2396 unsigned long irq_trigger; 2397 2398 if (pdev->dev.dma_mask) { 2399 ret = -EINVAL; 2400 dev_err(&pdev->dev, "dma not supported\n"); 2401 goto clean_up; 2402 } 2403 2404 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2405 if (!res) { 2406 ret = -ENODEV; 2407 dev_err(&pdev->dev, "platform_get_resource error.\n"); 2408 goto clean_up; 2409 } 2410 2411 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2412 if (!ires) { 2413 ret = -ENODEV; 2414 dev_err(&pdev->dev, 2415 "platform_get_resource IORESOURCE_IRQ error.\n"); 2416 goto clean_up; 2417 } 2418 2419 irq = ires->start; 2420 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 2421 2422 reg = ioremap(res->start, resource_size(res)); 2423 if (reg == NULL) { 2424 ret = -ENOMEM; 2425 dev_err(&pdev->dev, "ioremap error.\n"); 2426 goto clean_up; 2427 } 2428 2429 if (pdev->dev.platform_data == NULL) { 2430 dev_err(&pdev->dev, "no platform data\n"); 2431 ret = -ENODEV; 2432 goto clean_up; 2433 } 2434 2435 /* initialize hcd */ 2436 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2437 if (!hcd) { 2438 ret = -ENOMEM; 2439 dev_err(&pdev->dev, "Failed to create hcd\n"); 2440 goto clean_up; 2441 } 2442 r8a66597 = hcd_to_r8a66597(hcd); 2443 memset(r8a66597, 0, sizeof(struct r8a66597)); 2444 dev_set_drvdata(&pdev->dev, r8a66597); 2445 r8a66597->pdata = pdev->dev.platform_data; 2446 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; 2447 2448 if (r8a66597->pdata->on_chip) { 2449 #ifdef CONFIG_HAVE_CLK 2450 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); 2451 r8a66597->clk = clk_get(&pdev->dev, clk_name); 2452 if (IS_ERR(r8a66597->clk)) { 2453 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", 2454 clk_name); 2455 ret = PTR_ERR(r8a66597->clk); 2456 goto clean_up2; 2457 } 2458 #endif 2459 r8a66597->max_root_hub = 1; 2460 } else 2461 r8a66597->max_root_hub = 2; 2462 2463 spin_lock_init(&r8a66597->lock); 2464 init_timer(&r8a66597->rh_timer); 2465 r8a66597->rh_timer.function = r8a66597_timer; 2466 r8a66597->rh_timer.data = (unsigned long)r8a66597; 2467 r8a66597->reg = (unsigned long)reg; 2468 2469 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2470 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2471 init_timer(&r8a66597->td_timer[i]); 2472 r8a66597->td_timer[i].function = r8a66597_td_timer; 2473 r8a66597->td_timer[i].data = (unsigned long)r8a66597; 2474 setup_timer(&r8a66597->interval_timer[i], 2475 r8a66597_interval_timer, 2476 (unsigned long)r8a66597); 2477 } 2478 INIT_LIST_HEAD(&r8a66597->child_device); 2479 2480 hcd->rsrc_start = res->start; 2481 2482 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger); 2483 if (ret != 0) { 2484 dev_err(&pdev->dev, "Failed to add hcd\n"); 2485 goto clean_up3; 2486 } 2487 2488 return 0; 2489 2490 clean_up3: 2491 #ifdef CONFIG_HAVE_CLK 2492 if (r8a66597->pdata->on_chip) 2493 clk_put(r8a66597->clk); 2494 clean_up2: 2495 #endif 2496 usb_put_hcd(hcd); 2497 2498 clean_up: 2499 if (reg) 2500 iounmap(reg); 2501 2502 return ret; 2503 } 2504 2505 static struct platform_driver r8a66597_driver = { 2506 .probe = r8a66597_probe, 2507 .remove = r8a66597_remove, 2508 .driver = { 2509 .name = (char *) hcd_name, 2510 .owner = THIS_MODULE, 2511 .pm = R8A66597_DEV_PM_OPS, 2512 }, 2513 }; 2514 2515 static int __init r8a66597_init(void) 2516 { 2517 if (usb_disabled()) 2518 return -ENODEV; 2519 2520 printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name, 2521 DRIVER_VERSION); 2522 return platform_driver_register(&r8a66597_driver); 2523 } 2524 module_init(r8a66597_init); 2525 2526 static void __exit r8a66597_cleanup(void) 2527 { 2528 platform_driver_unregister(&r8a66597_driver); 2529 } 2530 module_exit(r8a66597_cleanup); 2531 2532