1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * R8A66597 HCD (Host Controller Driver) 4 * 5 * Copyright (C) 2006-2007 Renesas Solutions Corp. 6 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO) 7 * Portions Copyright (C) 2004-2005 David Brownell 8 * Portions Copyright (C) 1999 Roman Weissgaerber 9 * 10 * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> 11 */ 12 13 #include <linux/module.h> 14 #include <linux/kernel.h> 15 #include <linux/sched.h> 16 #include <linux/errno.h> 17 #include <linux/timer.h> 18 #include <linux/delay.h> 19 #include <linux/list.h> 20 #include <linux/interrupt.h> 21 #include <linux/usb.h> 22 #include <linux/usb/hcd.h> 23 #include <linux/platform_device.h> 24 #include <linux/io.h> 25 #include <linux/mm.h> 26 #include <linux/irq.h> 27 #include <linux/slab.h> 28 #include <asm/cacheflush.h> 29 30 #include "r8a66597.h" 31 32 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); 33 MODULE_LICENSE("GPL"); 34 MODULE_AUTHOR("Yoshihiro Shimoda"); 35 MODULE_ALIAS("platform:r8a66597_hcd"); 36 37 #define DRIVER_VERSION "2009-05-26" 38 39 static const char hcd_name[] = "r8a66597_hcd"; 40 41 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 42 static int r8a66597_get_frame(struct usb_hcd *hcd); 43 44 /* this function must be called with interrupt disabled */ 45 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 46 unsigned long reg) 47 { 48 u16 tmp; 49 50 tmp = r8a66597_read(r8a66597, INTENB0); 51 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 52 r8a66597_bset(r8a66597, 1 << pipenum, reg); 53 r8a66597_write(r8a66597, tmp, INTENB0); 54 } 55 56 /* this function must be called with interrupt disabled */ 57 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 58 unsigned long reg) 59 { 60 u16 tmp; 61 62 tmp = r8a66597_read(r8a66597, INTENB0); 63 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 64 r8a66597_bclr(r8a66597, 1 << pipenum, reg); 65 r8a66597_write(r8a66597, tmp, INTENB0); 66 } 67 68 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, 69 u16 usbspd, u8 upphub, u8 hubport, int port) 70 { 71 u16 val; 72 unsigned long devadd_reg = get_devadd_addr(r8a66597_address); 73 74 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); 75 r8a66597_write(r8a66597, val, devadd_reg); 76 } 77 78 static int r8a66597_clock_enable(struct r8a66597 *r8a66597) 79 { 80 u16 tmp; 81 int i = 0; 82 83 if (r8a66597->pdata->on_chip) { 84 clk_prepare_enable(r8a66597->clk); 85 do { 86 r8a66597_write(r8a66597, SCKE, SYSCFG0); 87 tmp = r8a66597_read(r8a66597, SYSCFG0); 88 if (i++ > 1000) { 89 printk(KERN_ERR "r8a66597: reg access fail.\n"); 90 return -ENXIO; 91 } 92 } while ((tmp & SCKE) != SCKE); 93 r8a66597_write(r8a66597, 0x04, 0x02); 94 } else { 95 do { 96 r8a66597_write(r8a66597, USBE, SYSCFG0); 97 tmp = r8a66597_read(r8a66597, SYSCFG0); 98 if (i++ > 1000) { 99 printk(KERN_ERR "r8a66597: reg access fail.\n"); 100 return -ENXIO; 101 } 102 } while ((tmp & USBE) != USBE); 103 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 104 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), 105 XTAL, SYSCFG0); 106 107 i = 0; 108 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 109 do { 110 msleep(1); 111 tmp = r8a66597_read(r8a66597, SYSCFG0); 112 if (i++ > 500) { 113 printk(KERN_ERR "r8a66597: reg access fail.\n"); 114 return -ENXIO; 115 } 116 } while ((tmp & SCKE) != SCKE); 117 } 118 119 return 0; 120 } 121 122 static void r8a66597_clock_disable(struct r8a66597 *r8a66597) 123 { 124 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 125 udelay(1); 126 127 if (r8a66597->pdata->on_chip) { 128 clk_disable_unprepare(r8a66597->clk); 129 } else { 130 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 131 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 132 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 133 } 134 } 135 136 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) 137 { 138 u16 val; 139 140 val = port ? DRPD : DCFM | DRPD; 141 r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); 142 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 143 144 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); 145 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); 146 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 147 } 148 149 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) 150 { 151 u16 val, tmp; 152 153 r8a66597_write(r8a66597, 0, get_intenb_reg(port)); 154 r8a66597_write(r8a66597, 0, get_intsts_reg(port)); 155 156 r8a66597_port_power(r8a66597, port, 0); 157 158 do { 159 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; 160 udelay(640); 161 } while (tmp == EDGESTS); 162 163 val = port ? DRPD : DCFM | DRPD; 164 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); 165 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 166 } 167 168 static int enable_controller(struct r8a66597 *r8a66597) 169 { 170 int ret, port; 171 u16 vif = r8a66597->pdata->vif ? LDRV : 0; 172 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; 173 u16 endian = r8a66597->pdata->endian ? BIGEND : 0; 174 175 ret = r8a66597_clock_enable(r8a66597); 176 if (ret < 0) 177 return ret; 178 179 r8a66597_bset(r8a66597, vif & LDRV, PINCFG); 180 r8a66597_bset(r8a66597, USBE, SYSCFG0); 181 182 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 183 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); 184 r8a66597_bset(r8a66597, BRDY0, BRDYENB); 185 r8a66597_bset(r8a66597, BEMP0, BEMPENB); 186 187 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); 188 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); 189 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); 190 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); 191 192 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); 193 194 for (port = 0; port < r8a66597->max_root_hub; port++) 195 r8a66597_enable_port(r8a66597, port); 196 197 return 0; 198 } 199 200 static void disable_controller(struct r8a66597 *r8a66597) 201 { 202 int port; 203 204 /* disable interrupts */ 205 r8a66597_write(r8a66597, 0, INTENB0); 206 r8a66597_write(r8a66597, 0, INTENB1); 207 r8a66597_write(r8a66597, 0, BRDYENB); 208 r8a66597_write(r8a66597, 0, BEMPENB); 209 r8a66597_write(r8a66597, 0, NRDYENB); 210 211 /* clear status */ 212 r8a66597_write(r8a66597, 0, BRDYSTS); 213 r8a66597_write(r8a66597, 0, NRDYSTS); 214 r8a66597_write(r8a66597, 0, BEMPSTS); 215 216 for (port = 0; port < r8a66597->max_root_hub; port++) 217 r8a66597_disable_port(r8a66597, port); 218 219 r8a66597_clock_disable(r8a66597); 220 } 221 222 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, 223 struct usb_device *udev) 224 { 225 struct r8a66597_device *dev; 226 227 if (udev->parent && udev->parent->devnum != 1) 228 udev = udev->parent; 229 230 dev = dev_get_drvdata(&udev->dev); 231 if (dev) 232 return dev->address; 233 else 234 return 0; 235 } 236 237 static int is_child_device(char *devpath) 238 { 239 return (devpath[2] ? 1 : 0); 240 } 241 242 static int is_hub_limit(char *devpath) 243 { 244 return ((strlen(devpath) >= 4) ? 1 : 0); 245 } 246 247 static void get_port_number(struct r8a66597 *r8a66597, 248 char *devpath, u16 *root_port, u16 *hub_port) 249 { 250 if (root_port) { 251 *root_port = (devpath[0] & 0x0F) - 1; 252 if (*root_port >= r8a66597->max_root_hub) 253 printk(KERN_ERR "r8a66597: Illegal root port number.\n"); 254 } 255 if (hub_port) 256 *hub_port = devpath[2] & 0x0F; 257 } 258 259 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) 260 { 261 u16 usbspd = 0; 262 263 switch (speed) { 264 case USB_SPEED_LOW: 265 usbspd = LSMODE; 266 break; 267 case USB_SPEED_FULL: 268 usbspd = FSMODE; 269 break; 270 case USB_SPEED_HIGH: 271 usbspd = HSMODE; 272 break; 273 default: 274 printk(KERN_ERR "r8a66597: unknown speed\n"); 275 break; 276 } 277 278 return usbspd; 279 } 280 281 static void set_child_connect_map(struct r8a66597 *r8a66597, int address) 282 { 283 int idx; 284 285 idx = address / 32; 286 r8a66597->child_connect_map[idx] |= 1 << (address % 32); 287 } 288 289 static void put_child_connect_map(struct r8a66597 *r8a66597, int address) 290 { 291 int idx; 292 293 idx = address / 32; 294 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); 295 } 296 297 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) 298 { 299 u16 pipenum = pipe->info.pipenum; 300 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; 301 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; 302 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; 303 304 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ 305 dma_ch = R8A66597_PIPE_NO_DMA; 306 307 pipe->fifoaddr = fifoaddr[dma_ch]; 308 pipe->fifosel = fifosel[dma_ch]; 309 pipe->fifoctr = fifoctr[dma_ch]; 310 311 if (pipenum == 0) 312 pipe->pipectr = DCPCTR; 313 else 314 pipe->pipectr = get_pipectr_addr(pipenum); 315 316 if (check_bulk_or_isoc(pipenum)) { 317 pipe->pipetre = get_pipetre_addr(pipenum); 318 pipe->pipetrn = get_pipetrn_addr(pipenum); 319 } else { 320 pipe->pipetre = 0; 321 pipe->pipetrn = 0; 322 } 323 } 324 325 static struct r8a66597_device * 326 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) 327 { 328 if (usb_pipedevice(urb->pipe) == 0) 329 return &r8a66597->device0; 330 331 return dev_get_drvdata(&urb->dev->dev); 332 } 333 334 static int make_r8a66597_device(struct r8a66597 *r8a66597, 335 struct urb *urb, u8 addr) 336 { 337 struct r8a66597_device *dev; 338 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 339 340 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); 341 if (dev == NULL) 342 return -ENOMEM; 343 344 dev_set_drvdata(&urb->dev->dev, dev); 345 dev->udev = urb->dev; 346 dev->address = addr; 347 dev->usb_address = usb_address; 348 dev->state = USB_STATE_ADDRESS; 349 dev->ep_in_toggle = 0; 350 dev->ep_out_toggle = 0; 351 INIT_LIST_HEAD(&dev->device_list); 352 list_add_tail(&dev->device_list, &r8a66597->child_device); 353 354 get_port_number(r8a66597, urb->dev->devpath, 355 &dev->root_port, &dev->hub_port); 356 if (!is_child_device(urb->dev->devpath)) 357 r8a66597->root_hub[dev->root_port].dev = dev; 358 359 set_devadd_reg(r8a66597, dev->address, 360 get_r8a66597_usb_speed(urb->dev->speed), 361 get_parent_r8a66597_address(r8a66597, urb->dev), 362 dev->hub_port, dev->root_port); 363 364 return 0; 365 } 366 367 /* this function must be called with interrupt disabled */ 368 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) 369 { 370 u8 addr; /* R8A66597's address */ 371 struct r8a66597_device *dev; 372 373 if (is_hub_limit(urb->dev->devpath)) { 374 dev_err(&urb->dev->dev, "External hub limit reached.\n"); 375 return 0; 376 } 377 378 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 379 if (dev && dev->state >= USB_STATE_ADDRESS) 380 return dev->address; 381 382 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { 383 if (r8a66597->address_map & (1 << addr)) 384 continue; 385 386 dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr); 387 r8a66597->address_map |= 1 << addr; 388 389 if (make_r8a66597_device(r8a66597, urb, addr) < 0) 390 return 0; 391 392 return addr; 393 } 394 395 dev_err(&urb->dev->dev, 396 "cannot communicate with a USB device more than 10.(%x)\n", 397 r8a66597->address_map); 398 399 return 0; 400 } 401 402 /* this function must be called with interrupt disabled */ 403 static void free_usb_address(struct r8a66597 *r8a66597, 404 struct r8a66597_device *dev, int reset) 405 { 406 int port; 407 408 if (!dev) 409 return; 410 411 dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address); 412 413 dev->state = USB_STATE_DEFAULT; 414 r8a66597->address_map &= ~(1 << dev->address); 415 dev->address = 0; 416 /* 417 * Only when resetting USB, it is necessary to erase drvdata. When 418 * a usb device with usb hub is disconnect, "dev->udev" is already 419 * freed on usb_desconnect(). So we cannot access the data. 420 */ 421 if (reset) 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 if (!pipe || pipe->info.pipenum == 0) 479 return; 480 481 pipe_stop(r8a66597, pipe); 482 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 483 r8a66597_read(r8a66597, pipe->pipectr); 484 r8a66597_read(r8a66597, pipe->pipectr); 485 r8a66597_read(r8a66597, pipe->pipectr); 486 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 487 } 488 489 /* this function must be called with interrupt disabled */ 490 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 491 struct r8a66597_pipe *pipe, int toggle) 492 { 493 if (toggle) 494 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 495 else 496 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 497 } 498 499 static inline unsigned short mbw_value(struct r8a66597 *r8a66597) 500 { 501 if (r8a66597->pdata->on_chip) 502 return MBW_32; 503 else 504 return MBW_16; 505 } 506 507 /* this function must be called with interrupt disabled */ 508 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 509 { 510 unsigned short mbw = mbw_value(r8a66597); 511 512 r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL); 513 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 514 } 515 516 /* this function must be called with interrupt disabled */ 517 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 518 struct r8a66597_pipe *pipe) 519 { 520 unsigned short mbw = mbw_value(r8a66597); 521 522 cfifo_change(r8a66597, 0); 523 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL); 524 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL); 525 526 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE, 527 pipe->fifosel); 528 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 529 } 530 531 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 532 { 533 struct r8a66597_pipe *pipe = hep->hcpriv; 534 535 if (usb_pipeendpoint(urb->pipe) == 0) 536 return 0; 537 else 538 return pipe->info.pipenum; 539 } 540 541 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 542 { 543 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 544 545 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 546 } 547 548 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 549 int urb_pipe) 550 { 551 if (!dev) 552 return NULL; 553 554 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 555 } 556 557 /* this function must be called with interrupt disabled */ 558 static void pipe_toggle_set(struct r8a66597 *r8a66597, 559 struct r8a66597_pipe *pipe, 560 struct urb *urb, int set) 561 { 562 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 563 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 564 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 565 566 if (!toggle) 567 return; 568 569 if (set) 570 *toggle |= 1 << endpoint; 571 else 572 *toggle &= ~(1 << endpoint); 573 } 574 575 /* this function must be called with interrupt disabled */ 576 static void pipe_toggle_save(struct r8a66597 *r8a66597, 577 struct r8a66597_pipe *pipe, 578 struct urb *urb) 579 { 580 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 581 pipe_toggle_set(r8a66597, pipe, urb, 1); 582 else 583 pipe_toggle_set(r8a66597, pipe, urb, 0); 584 } 585 586 /* this function must be called with interrupt disabled */ 587 static void pipe_toggle_restore(struct r8a66597 *r8a66597, 588 struct r8a66597_pipe *pipe, 589 struct urb *urb) 590 { 591 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 592 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 593 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 594 595 if (!toggle) 596 return; 597 598 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 599 } 600 601 /* this function must be called with interrupt disabled */ 602 static void pipe_buffer_setting(struct r8a66597 *r8a66597, 603 struct r8a66597_pipe_info *info) 604 { 605 u16 val = 0; 606 607 if (info->pipenum == 0) 608 return; 609 610 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 611 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 612 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 613 if (!info->dir_in) 614 val |= R8A66597_DIR; 615 if (info->type == R8A66597_BULK && info->dir_in) 616 val |= R8A66597_DBLB | R8A66597_SHTNAK; 617 val |= info->type | info->epnum; 618 r8a66597_write(r8a66597, val, PIPECFG); 619 620 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 621 PIPEBUF); 622 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 623 PIPEMAXP); 624 r8a66597_write(r8a66597, info->interval, PIPEPERI); 625 } 626 627 /* this function must be called with interrupt disabled */ 628 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 629 { 630 struct r8a66597_pipe_info *info; 631 struct urb *urb = td->urb; 632 633 if (td->pipenum > 0) { 634 info = &td->pipe->info; 635 cfifo_change(r8a66597, 0); 636 pipe_buffer_setting(r8a66597, info); 637 638 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 639 usb_pipeout(urb->pipe)) && 640 !usb_pipecontrol(urb->pipe)) { 641 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 642 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 643 clear_all_buffer(r8a66597, td->pipe); 644 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 645 usb_pipeout(urb->pipe), 1); 646 } 647 pipe_toggle_restore(r8a66597, td->pipe, urb); 648 } 649 } 650 651 /* this function must be called with interrupt disabled */ 652 static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 653 struct usb_endpoint_descriptor *ep) 654 { 655 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 656 657 memset(array, 0, sizeof(array)); 658 switch (usb_endpoint_type(ep)) { 659 case USB_ENDPOINT_XFER_BULK: 660 if (usb_endpoint_dir_in(ep)) 661 array[i++] = 4; 662 else { 663 array[i++] = 3; 664 array[i++] = 5; 665 } 666 break; 667 case USB_ENDPOINT_XFER_INT: 668 if (usb_endpoint_dir_in(ep)) { 669 array[i++] = 6; 670 array[i++] = 7; 671 array[i++] = 8; 672 } else 673 array[i++] = 9; 674 break; 675 case USB_ENDPOINT_XFER_ISOC: 676 if (usb_endpoint_dir_in(ep)) 677 array[i++] = 2; 678 else 679 array[i++] = 1; 680 break; 681 default: 682 printk(KERN_ERR "r8a66597: Illegal type\n"); 683 return 0; 684 } 685 686 i = 1; 687 min = array[0]; 688 while (array[i] != 0) { 689 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 690 min = array[i]; 691 i++; 692 } 693 694 return min; 695 } 696 697 static u16 get_r8a66597_type(__u8 type) 698 { 699 u16 r8a66597_type; 700 701 switch (type) { 702 case USB_ENDPOINT_XFER_BULK: 703 r8a66597_type = R8A66597_BULK; 704 break; 705 case USB_ENDPOINT_XFER_INT: 706 r8a66597_type = R8A66597_INT; 707 break; 708 case USB_ENDPOINT_XFER_ISOC: 709 r8a66597_type = R8A66597_ISO; 710 break; 711 default: 712 printk(KERN_ERR "r8a66597: Illegal type\n"); 713 r8a66597_type = 0x0000; 714 break; 715 } 716 717 return r8a66597_type; 718 } 719 720 static u16 get_bufnum(u16 pipenum) 721 { 722 u16 bufnum = 0; 723 724 if (pipenum == 0) 725 bufnum = 0; 726 else if (check_bulk_or_isoc(pipenum)) 727 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 728 else if (check_interrupt(pipenum)) 729 bufnum = 4 + (pipenum - 6); 730 else 731 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 732 733 return bufnum; 734 } 735 736 static u16 get_buf_bsize(u16 pipenum) 737 { 738 u16 buf_bsize = 0; 739 740 if (pipenum == 0) 741 buf_bsize = 3; 742 else if (check_bulk_or_isoc(pipenum)) 743 buf_bsize = R8A66597_BUF_BSIZE - 1; 744 else if (check_interrupt(pipenum)) 745 buf_bsize = 0; 746 else 747 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 748 749 return buf_bsize; 750 } 751 752 /* this function must be called with interrupt disabled */ 753 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 754 struct r8a66597_device *dev, 755 struct r8a66597_pipe *pipe, 756 struct urb *urb) 757 { 758 int i; 759 struct r8a66597_pipe_info *info = &pipe->info; 760 unsigned short mbw = mbw_value(r8a66597); 761 762 /* pipe dma is only for external controlles */ 763 if (r8a66597->pdata->on_chip) 764 return; 765 766 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 767 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 768 if ((r8a66597->dma_map & (1 << i)) != 0) 769 continue; 770 771 dev_info(&dev->udev->dev, 772 "address %d, EndpointAddress 0x%02x use " 773 "DMA FIFO\n", usb_pipedevice(urb->pipe), 774 info->dir_in ? 775 USB_ENDPOINT_DIR_MASK + info->epnum 776 : info->epnum); 777 778 r8a66597->dma_map |= 1 << i; 779 dev->dma_map |= 1 << i; 780 set_pipe_reg_addr(pipe, i); 781 782 cfifo_change(r8a66597, 0); 783 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, 784 mbw | CURPIPE, pipe->fifosel); 785 786 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 787 pipe->info.pipenum); 788 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 789 break; 790 } 791 } 792 } 793 794 /* this function must be called with interrupt disabled */ 795 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 796 struct usb_host_endpoint *hep, 797 struct r8a66597_pipe_info *info) 798 { 799 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 800 struct r8a66597_pipe *pipe = hep->hcpriv; 801 802 dev_dbg(&dev->udev->dev, "enable_pipe:\n"); 803 804 pipe->info = *info; 805 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 806 r8a66597->pipe_cnt[pipe->info.pipenum]++; 807 dev->pipe_cnt[pipe->info.pipenum]++; 808 809 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 810 } 811 812 static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb, 813 int status) 814 __releases(r8a66597->lock) 815 __acquires(r8a66597->lock) 816 { 817 if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { 818 void *ptr; 819 820 for (ptr = urb->transfer_buffer; 821 ptr < urb->transfer_buffer + urb->transfer_buffer_length; 822 ptr += PAGE_SIZE) 823 flush_dcache_page(virt_to_page(ptr)); 824 } 825 826 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 827 spin_unlock(&r8a66597->lock); 828 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status); 829 spin_lock(&r8a66597->lock); 830 } 831 832 /* this function must be called with interrupt disabled */ 833 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 834 { 835 struct r8a66597_td *td, *next; 836 struct urb *urb; 837 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 838 839 if (list_empty(list)) 840 return; 841 842 list_for_each_entry_safe(td, next, list, queue) { 843 if (td->address != address) 844 continue; 845 846 urb = td->urb; 847 list_del(&td->queue); 848 kfree(td); 849 850 if (urb) 851 r8a66597_urb_done(r8a66597, urb, -ENODEV); 852 853 break; 854 } 855 } 856 857 /* this function must be called with interrupt disabled */ 858 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 859 struct r8a66597_device *dev) 860 { 861 int check_ep0 = 0; 862 u16 pipenum; 863 864 if (!dev) 865 return; 866 867 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 868 if (!dev->pipe_cnt[pipenum]) 869 continue; 870 871 if (!check_ep0) { 872 check_ep0 = 1; 873 force_dequeue(r8a66597, 0, dev->address); 874 } 875 876 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 877 dev->pipe_cnt[pipenum] = 0; 878 force_dequeue(r8a66597, pipenum, dev->address); 879 } 880 881 dev_dbg(&dev->udev->dev, "disable_pipe\n"); 882 883 r8a66597->dma_map &= ~(dev->dma_map); 884 dev->dma_map = 0; 885 } 886 887 static u16 get_interval(struct urb *urb, __u8 interval) 888 { 889 u16 time = 1; 890 int i; 891 892 if (urb->dev->speed == USB_SPEED_HIGH) { 893 if (interval > IITV) 894 time = IITV; 895 else 896 time = interval ? interval - 1 : 0; 897 } else { 898 if (interval > 128) { 899 time = IITV; 900 } else { 901 /* calculate the nearest value for PIPEPERI */ 902 for (i = 0; i < 7; i++) { 903 if ((1 << i) < interval && 904 (1 << (i + 1) > interval)) 905 time = 1 << i; 906 } 907 } 908 } 909 910 return time; 911 } 912 913 static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 914 { 915 __u8 i; 916 unsigned long time = 1; 917 918 if (usb_pipeisoc(urb->pipe)) 919 return 0; 920 921 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 922 for (i = 0; i < (interval - 1); i++) 923 time *= 2; 924 time = time * 125 / 1000; /* uSOF -> msec */ 925 } else { 926 time = interval; 927 } 928 929 return time; 930 } 931 932 /* this function must be called with interrupt disabled */ 933 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 934 struct usb_host_endpoint *hep, 935 struct usb_endpoint_descriptor *ep) 936 { 937 struct r8a66597_pipe_info info; 938 939 info.pipenum = get_empty_pipenum(r8a66597, ep); 940 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 941 info.epnum = usb_endpoint_num(ep); 942 info.maxpacket = usb_endpoint_maxp(ep); 943 info.type = get_r8a66597_type(usb_endpoint_type(ep)); 944 info.bufnum = get_bufnum(info.pipenum); 945 info.buf_bsize = get_buf_bsize(info.pipenum); 946 if (info.type == R8A66597_BULK) { 947 info.interval = 0; 948 info.timer_interval = 0; 949 } else { 950 info.interval = get_interval(urb, ep->bInterval); 951 info.timer_interval = get_timer_interval(urb, ep->bInterval); 952 } 953 if (usb_endpoint_dir_in(ep)) 954 info.dir_in = 1; 955 else 956 info.dir_in = 0; 957 958 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 959 } 960 961 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 962 { 963 struct r8a66597_device *dev; 964 965 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 966 dev->state = USB_STATE_CONFIGURED; 967 } 968 969 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 970 u16 pipenum) 971 { 972 if (pipenum == 0 && usb_pipeout(urb->pipe)) 973 enable_irq_empty(r8a66597, pipenum); 974 else 975 enable_irq_ready(r8a66597, pipenum); 976 977 if (!usb_pipeisoc(urb->pipe)) 978 enable_irq_nrdy(r8a66597, pipenum); 979 } 980 981 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 982 { 983 disable_irq_ready(r8a66597, pipenum); 984 disable_irq_nrdy(r8a66597, pipenum); 985 } 986 987 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 988 { 989 mod_timer(&r8a66597->rh_timer, 990 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 991 } 992 993 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, 994 int connect) 995 { 996 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 997 998 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 999 rh->scount = R8A66597_MAX_SAMPLING; 1000 if (connect) 1001 rh->port |= USB_PORT_STAT_CONNECTION; 1002 else 1003 rh->port &= ~USB_PORT_STAT_CONNECTION; 1004 rh->port |= USB_PORT_STAT_C_CONNECTION << 16; 1005 1006 r8a66597_root_hub_start_polling(r8a66597); 1007 } 1008 1009 /* this function must be called with interrupt disabled */ 1010 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 1011 u16 syssts) 1012 __releases(r8a66597->lock) 1013 __acquires(r8a66597->lock) 1014 { 1015 if (syssts == SE0) { 1016 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1017 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1018 } else { 1019 if (syssts == FS_JSTS) 1020 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 1021 else if (syssts == LS_JSTS) 1022 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 1023 1024 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 1025 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 1026 1027 if (r8a66597->bus_suspended) 1028 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1029 } 1030 1031 spin_unlock(&r8a66597->lock); 1032 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597)); 1033 spin_lock(&r8a66597->lock); 1034 } 1035 1036 /* this function must be called with interrupt disabled */ 1037 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 1038 { 1039 u16 speed = get_rh_usb_speed(r8a66597, port); 1040 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1041 1042 rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED); 1043 if (speed == HSMODE) 1044 rh->port |= USB_PORT_STAT_HIGH_SPEED; 1045 else if (speed == LSMODE) 1046 rh->port |= USB_PORT_STAT_LOW_SPEED; 1047 1048 rh->port &= ~USB_PORT_STAT_RESET; 1049 rh->port |= USB_PORT_STAT_ENABLE; 1050 } 1051 1052 /* this function must be called with interrupt disabled */ 1053 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1054 { 1055 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1056 1057 disable_r8a66597_pipe_all(r8a66597, dev); 1058 free_usb_address(r8a66597, dev, 0); 1059 1060 start_root_hub_sampling(r8a66597, port, 0); 1061 } 1062 1063 /* this function must be called with interrupt disabled */ 1064 static void prepare_setup_packet(struct r8a66597 *r8a66597, 1065 struct r8a66597_td *td) 1066 { 1067 int i; 1068 __le16 *p = (__le16 *)td->urb->setup_packet; 1069 unsigned long setup_addr = USBREQ; 1070 1071 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1072 DCPMAXP); 1073 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1074 1075 for (i = 0; i < 4; i++) { 1076 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1077 setup_addr += 2; 1078 } 1079 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1080 } 1081 1082 /* this function must be called with interrupt disabled */ 1083 static void prepare_packet_read(struct r8a66597 *r8a66597, 1084 struct r8a66597_td *td) 1085 { 1086 struct urb *urb = td->urb; 1087 1088 if (usb_pipecontrol(urb->pipe)) { 1089 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1090 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1091 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1092 if (urb->actual_length == 0) { 1093 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1094 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1095 } 1096 pipe_irq_disable(r8a66597, td->pipenum); 1097 pipe_start(r8a66597, td->pipe); 1098 pipe_irq_enable(r8a66597, urb, td->pipenum); 1099 } else { 1100 if (urb->actual_length == 0) { 1101 pipe_irq_disable(r8a66597, td->pipenum); 1102 pipe_setting(r8a66597, td); 1103 pipe_stop(r8a66597, td->pipe); 1104 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1105 1106 if (td->pipe->pipetre) { 1107 r8a66597_write(r8a66597, TRCLR, 1108 td->pipe->pipetre); 1109 r8a66597_write(r8a66597, 1110 DIV_ROUND_UP 1111 (urb->transfer_buffer_length, 1112 td->maxpacket), 1113 td->pipe->pipetrn); 1114 r8a66597_bset(r8a66597, TRENB, 1115 td->pipe->pipetre); 1116 } 1117 1118 pipe_start(r8a66597, td->pipe); 1119 pipe_irq_enable(r8a66597, urb, td->pipenum); 1120 } 1121 } 1122 } 1123 1124 /* this function must be called with interrupt disabled */ 1125 static void prepare_packet_write(struct r8a66597 *r8a66597, 1126 struct r8a66597_td *td) 1127 { 1128 u16 tmp; 1129 struct urb *urb = td->urb; 1130 1131 if (usb_pipecontrol(urb->pipe)) { 1132 pipe_stop(r8a66597, td->pipe); 1133 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1134 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1135 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1136 if (urb->actual_length == 0) { 1137 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1138 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1139 } 1140 } else { 1141 if (urb->actual_length == 0) 1142 pipe_setting(r8a66597, td); 1143 if (td->pipe->pipetre) 1144 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1145 } 1146 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1147 1148 fifo_change_from_pipe(r8a66597, td->pipe); 1149 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1150 if (unlikely((tmp & FRDY) == 0)) 1151 pipe_irq_enable(r8a66597, urb, td->pipenum); 1152 else 1153 packet_write(r8a66597, td->pipenum); 1154 pipe_start(r8a66597, td->pipe); 1155 } 1156 1157 /* this function must be called with interrupt disabled */ 1158 static void prepare_status_packet(struct r8a66597 *r8a66597, 1159 struct r8a66597_td *td) 1160 { 1161 struct urb *urb = td->urb; 1162 1163 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1164 pipe_stop(r8a66597, td->pipe); 1165 1166 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1167 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1168 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1169 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1170 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1171 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1172 enable_irq_empty(r8a66597, 0); 1173 } else { 1174 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1175 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1176 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1177 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1178 enable_irq_ready(r8a66597, 0); 1179 } 1180 enable_irq_nrdy(r8a66597, 0); 1181 pipe_start(r8a66597, td->pipe); 1182 } 1183 1184 static int is_set_address(unsigned char *setup_packet) 1185 { 1186 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1187 setup_packet[1] == USB_REQ_SET_ADDRESS) 1188 return 1; 1189 else 1190 return 0; 1191 } 1192 1193 /* this function must be called with interrupt disabled */ 1194 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1195 { 1196 BUG_ON(!td); 1197 1198 switch (td->type) { 1199 case USB_PID_SETUP: 1200 if (is_set_address(td->urb->setup_packet)) { 1201 td->set_address = 1; 1202 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1203 td->urb); 1204 if (td->urb->setup_packet[2] == 0) 1205 return -EPIPE; 1206 } 1207 prepare_setup_packet(r8a66597, td); 1208 break; 1209 case USB_PID_IN: 1210 prepare_packet_read(r8a66597, td); 1211 break; 1212 case USB_PID_OUT: 1213 prepare_packet_write(r8a66597, td); 1214 break; 1215 case USB_PID_ACK: 1216 prepare_status_packet(r8a66597, td); 1217 break; 1218 default: 1219 printk(KERN_ERR "r8a66597: invalid type.\n"); 1220 break; 1221 } 1222 1223 return 0; 1224 } 1225 1226 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1227 { 1228 if (usb_pipeisoc(urb->pipe)) { 1229 if (urb->number_of_packets == td->iso_cnt) 1230 return 1; 1231 } 1232 1233 /* control or bulk or interrupt */ 1234 if ((urb->transfer_buffer_length <= urb->actual_length) || 1235 (td->short_packet) || (td->zero_packet)) 1236 return 1; 1237 1238 return 0; 1239 } 1240 1241 /* this function must be called with interrupt disabled */ 1242 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1243 { 1244 unsigned long time; 1245 1246 BUG_ON(!td); 1247 1248 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1249 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1250 r8a66597->timeout_map |= 1 << td->pipenum; 1251 switch (usb_pipetype(td->urb->pipe)) { 1252 case PIPE_INTERRUPT: 1253 case PIPE_ISOCHRONOUS: 1254 time = 30; 1255 break; 1256 default: 1257 time = 50; 1258 break; 1259 } 1260 1261 mod_timer(&r8a66597->timers[td->pipenum].td, 1262 jiffies + msecs_to_jiffies(time)); 1263 } 1264 } 1265 1266 /* this function must be called with interrupt disabled */ 1267 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1268 u16 pipenum, struct urb *urb, int status) 1269 __releases(r8a66597->lock) __acquires(r8a66597->lock) 1270 { 1271 int restart = 0; 1272 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1273 1274 r8a66597->timeout_map &= ~(1 << pipenum); 1275 1276 if (likely(td)) { 1277 if (td->set_address && (status != 0 || urb->unlinked)) 1278 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1279 1280 pipe_toggle_save(r8a66597, td->pipe, urb); 1281 list_del(&td->queue); 1282 kfree(td); 1283 } 1284 1285 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1286 restart = 1; 1287 1288 if (likely(urb)) { 1289 if (usb_pipeisoc(urb->pipe)) 1290 urb->start_frame = r8a66597_get_frame(hcd); 1291 1292 r8a66597_urb_done(r8a66597, urb, status); 1293 } 1294 1295 if (restart) { 1296 td = r8a66597_get_td(r8a66597, pipenum); 1297 if (unlikely(!td)) 1298 return; 1299 1300 start_transfer(r8a66597, td); 1301 set_td_timer(r8a66597, td); 1302 } 1303 } 1304 1305 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1306 { 1307 u16 tmp; 1308 int rcv_len, bufsize, urb_len, size; 1309 u16 *buf; 1310 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1311 struct urb *urb; 1312 int finish = 0; 1313 int status = 0; 1314 1315 if (unlikely(!td)) 1316 return; 1317 urb = td->urb; 1318 1319 fifo_change_from_pipe(r8a66597, td->pipe); 1320 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1321 if (unlikely((tmp & FRDY) == 0)) { 1322 pipe_stop(r8a66597, td->pipe); 1323 pipe_irq_disable(r8a66597, pipenum); 1324 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); 1325 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1326 return; 1327 } 1328 1329 /* prepare parameters */ 1330 rcv_len = tmp & DTLN; 1331 if (usb_pipeisoc(urb->pipe)) { 1332 buf = (u16 *)(urb->transfer_buffer + 1333 urb->iso_frame_desc[td->iso_cnt].offset); 1334 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1335 } else { 1336 buf = (void *)urb->transfer_buffer + urb->actual_length; 1337 urb_len = urb->transfer_buffer_length - urb->actual_length; 1338 } 1339 bufsize = min(urb_len, (int) td->maxpacket); 1340 if (rcv_len <= bufsize) { 1341 size = rcv_len; 1342 } else { 1343 size = bufsize; 1344 status = -EOVERFLOW; 1345 finish = 1; 1346 } 1347 1348 /* update parameters */ 1349 urb->actual_length += size; 1350 if (rcv_len == 0) 1351 td->zero_packet = 1; 1352 if (rcv_len < bufsize) { 1353 td->short_packet = 1; 1354 } 1355 if (usb_pipeisoc(urb->pipe)) { 1356 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1357 urb->iso_frame_desc[td->iso_cnt].status = status; 1358 td->iso_cnt++; 1359 finish = 0; 1360 } 1361 1362 /* check transfer finish */ 1363 if (finish || check_transfer_finish(td, urb)) { 1364 pipe_stop(r8a66597, td->pipe); 1365 pipe_irq_disable(r8a66597, pipenum); 1366 finish = 1; 1367 } 1368 1369 /* read fifo */ 1370 if (urb->transfer_buffer) { 1371 if (size == 0) 1372 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1373 else 1374 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1375 buf, size); 1376 } 1377 1378 if (finish && pipenum != 0) 1379 finish_request(r8a66597, td, pipenum, urb, status); 1380 } 1381 1382 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1383 { 1384 u16 tmp; 1385 int bufsize, size; 1386 u16 *buf; 1387 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1388 struct urb *urb; 1389 1390 if (unlikely(!td)) 1391 return; 1392 urb = td->urb; 1393 1394 fifo_change_from_pipe(r8a66597, td->pipe); 1395 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1396 if (unlikely((tmp & FRDY) == 0)) { 1397 pipe_stop(r8a66597, td->pipe); 1398 pipe_irq_disable(r8a66597, pipenum); 1399 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); 1400 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1401 return; 1402 } 1403 1404 /* prepare parameters */ 1405 bufsize = td->maxpacket; 1406 if (usb_pipeisoc(urb->pipe)) { 1407 buf = (u16 *)(urb->transfer_buffer + 1408 urb->iso_frame_desc[td->iso_cnt].offset); 1409 size = min(bufsize, 1410 (int)urb->iso_frame_desc[td->iso_cnt].length); 1411 } else { 1412 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1413 size = min_t(u32, bufsize, 1414 urb->transfer_buffer_length - urb->actual_length); 1415 } 1416 1417 /* write fifo */ 1418 if (pipenum > 0) 1419 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1420 if (urb->transfer_buffer) { 1421 r8a66597_write_fifo(r8a66597, td->pipe, buf, size); 1422 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1423 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1424 } 1425 1426 /* update parameters */ 1427 urb->actual_length += size; 1428 if (usb_pipeisoc(urb->pipe)) { 1429 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1430 urb->iso_frame_desc[td->iso_cnt].status = 0; 1431 td->iso_cnt++; 1432 } 1433 1434 /* check transfer finish */ 1435 if (check_transfer_finish(td, urb)) { 1436 disable_irq_ready(r8a66597, pipenum); 1437 enable_irq_empty(r8a66597, pipenum); 1438 if (!usb_pipeisoc(urb->pipe)) 1439 enable_irq_nrdy(r8a66597, pipenum); 1440 } else 1441 pipe_irq_enable(r8a66597, urb, pipenum); 1442 } 1443 1444 1445 static void check_next_phase(struct r8a66597 *r8a66597, int status) 1446 { 1447 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1448 struct urb *urb; 1449 u8 finish = 0; 1450 1451 if (unlikely(!td)) 1452 return; 1453 urb = td->urb; 1454 1455 switch (td->type) { 1456 case USB_PID_IN: 1457 case USB_PID_OUT: 1458 if (check_transfer_finish(td, urb)) 1459 td->type = USB_PID_ACK; 1460 break; 1461 case USB_PID_SETUP: 1462 if (urb->transfer_buffer_length == urb->actual_length) 1463 td->type = USB_PID_ACK; 1464 else if (usb_pipeout(urb->pipe)) 1465 td->type = USB_PID_OUT; 1466 else 1467 td->type = USB_PID_IN; 1468 break; 1469 case USB_PID_ACK: 1470 finish = 1; 1471 break; 1472 } 1473 1474 if (finish || status != 0 || urb->unlinked) 1475 finish_request(r8a66597, td, 0, urb, status); 1476 else 1477 start_transfer(r8a66597, td); 1478 } 1479 1480 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1481 { 1482 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1483 1484 if (td) { 1485 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1486 1487 if (pid == PID_NAK) 1488 return -ECONNRESET; 1489 else 1490 return -EPIPE; 1491 } 1492 return 0; 1493 } 1494 1495 static void irq_pipe_ready(struct r8a66597 *r8a66597) 1496 { 1497 u16 check; 1498 u16 pipenum; 1499 u16 mask; 1500 struct r8a66597_td *td; 1501 1502 mask = r8a66597_read(r8a66597, BRDYSTS) 1503 & r8a66597_read(r8a66597, BRDYENB); 1504 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1505 if (mask & BRDY0) { 1506 td = r8a66597_get_td(r8a66597, 0); 1507 if (td && td->type == USB_PID_IN) 1508 packet_read(r8a66597, 0); 1509 else 1510 pipe_irq_disable(r8a66597, 0); 1511 check_next_phase(r8a66597, 0); 1512 } 1513 1514 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1515 check = 1 << pipenum; 1516 if (mask & check) { 1517 td = r8a66597_get_td(r8a66597, pipenum); 1518 if (unlikely(!td)) 1519 continue; 1520 1521 if (td->type == USB_PID_IN) 1522 packet_read(r8a66597, pipenum); 1523 else if (td->type == USB_PID_OUT) 1524 packet_write(r8a66597, pipenum); 1525 } 1526 } 1527 } 1528 1529 static void irq_pipe_empty(struct r8a66597 *r8a66597) 1530 { 1531 u16 tmp; 1532 u16 check; 1533 u16 pipenum; 1534 u16 mask; 1535 struct r8a66597_td *td; 1536 1537 mask = r8a66597_read(r8a66597, BEMPSTS) 1538 & r8a66597_read(r8a66597, BEMPENB); 1539 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1540 if (mask & BEMP0) { 1541 cfifo_change(r8a66597, 0); 1542 td = r8a66597_get_td(r8a66597, 0); 1543 if (td && td->type != USB_PID_OUT) 1544 disable_irq_empty(r8a66597, 0); 1545 check_next_phase(r8a66597, 0); 1546 } 1547 1548 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1549 check = 1 << pipenum; 1550 if (mask & check) { 1551 struct r8a66597_td *td; 1552 td = r8a66597_get_td(r8a66597, pipenum); 1553 if (unlikely(!td)) 1554 continue; 1555 1556 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1557 if ((tmp & INBUFM) == 0) { 1558 disable_irq_empty(r8a66597, pipenum); 1559 pipe_irq_disable(r8a66597, pipenum); 1560 finish_request(r8a66597, td, pipenum, td->urb, 1561 0); 1562 } 1563 } 1564 } 1565 } 1566 1567 static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1568 { 1569 u16 check; 1570 u16 pipenum; 1571 u16 mask; 1572 int status; 1573 1574 mask = r8a66597_read(r8a66597, NRDYSTS) 1575 & r8a66597_read(r8a66597, NRDYENB); 1576 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1577 if (mask & NRDY0) { 1578 cfifo_change(r8a66597, 0); 1579 status = get_urb_error(r8a66597, 0); 1580 pipe_irq_disable(r8a66597, 0); 1581 check_next_phase(r8a66597, status); 1582 } 1583 1584 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1585 check = 1 << pipenum; 1586 if (mask & check) { 1587 struct r8a66597_td *td; 1588 td = r8a66597_get_td(r8a66597, pipenum); 1589 if (unlikely(!td)) 1590 continue; 1591 1592 status = get_urb_error(r8a66597, pipenum); 1593 pipe_irq_disable(r8a66597, pipenum); 1594 pipe_stop(r8a66597, td->pipe); 1595 finish_request(r8a66597, td, pipenum, td->urb, status); 1596 } 1597 } 1598 } 1599 1600 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1601 { 1602 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1603 u16 intsts0, intsts1, intsts2; 1604 u16 intenb0, intenb1, intenb2; 1605 u16 mask0, mask1, mask2; 1606 int status; 1607 1608 spin_lock(&r8a66597->lock); 1609 1610 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1611 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1612 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1613 intenb0 = r8a66597_read(r8a66597, INTENB0); 1614 intenb1 = r8a66597_read(r8a66597, INTENB1); 1615 intenb2 = r8a66597_read(r8a66597, INTENB2); 1616 1617 mask2 = intsts2 & intenb2; 1618 mask1 = intsts1 & intenb1; 1619 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1620 if (mask2) { 1621 if (mask2 & ATTCH) { 1622 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1623 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1624 1625 /* start usb bus sampling */ 1626 start_root_hub_sampling(r8a66597, 1, 1); 1627 } 1628 if (mask2 & DTCH) { 1629 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1630 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1631 r8a66597_usb_disconnect(r8a66597, 1); 1632 } 1633 if (mask2 & BCHG) { 1634 r8a66597_write(r8a66597, ~BCHG, INTSTS2); 1635 r8a66597_bclr(r8a66597, BCHGE, INTENB2); 1636 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1637 } 1638 } 1639 1640 if (mask1) { 1641 if (mask1 & ATTCH) { 1642 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1643 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1644 1645 /* start usb bus sampling */ 1646 start_root_hub_sampling(r8a66597, 0, 1); 1647 } 1648 if (mask1 & DTCH) { 1649 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1650 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1651 r8a66597_usb_disconnect(r8a66597, 0); 1652 } 1653 if (mask1 & BCHG) { 1654 r8a66597_write(r8a66597, ~BCHG, INTSTS1); 1655 r8a66597_bclr(r8a66597, BCHGE, INTENB1); 1656 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1657 } 1658 1659 if (mask1 & SIGN) { 1660 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1661 status = get_urb_error(r8a66597, 0); 1662 check_next_phase(r8a66597, status); 1663 } 1664 if (mask1 & SACK) { 1665 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1666 check_next_phase(r8a66597, 0); 1667 } 1668 } 1669 if (mask0) { 1670 if (mask0 & BRDY) 1671 irq_pipe_ready(r8a66597); 1672 if (mask0 & BEMP) 1673 irq_pipe_empty(r8a66597); 1674 if (mask0 & NRDY) 1675 irq_pipe_nrdy(r8a66597); 1676 } 1677 1678 spin_unlock(&r8a66597->lock); 1679 return IRQ_HANDLED; 1680 } 1681 1682 /* this function must be called with interrupt disabled */ 1683 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1684 { 1685 u16 tmp; 1686 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1687 1688 if (rh->port & USB_PORT_STAT_RESET) { 1689 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1690 1691 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1692 if ((tmp & USBRST) == USBRST) { 1693 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1694 dvstctr_reg); 1695 r8a66597_root_hub_start_polling(r8a66597); 1696 } else 1697 r8a66597_usb_connect(r8a66597, port); 1698 } 1699 1700 if (!(rh->port & USB_PORT_STAT_CONNECTION)) { 1701 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1702 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1703 } 1704 1705 if (rh->scount > 0) { 1706 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1707 if (tmp == rh->old_syssts) { 1708 rh->scount--; 1709 if (rh->scount == 0) 1710 r8a66597_check_syssts(r8a66597, port, tmp); 1711 else 1712 r8a66597_root_hub_start_polling(r8a66597); 1713 } else { 1714 rh->scount = R8A66597_MAX_SAMPLING; 1715 rh->old_syssts = tmp; 1716 r8a66597_root_hub_start_polling(r8a66597); 1717 } 1718 } 1719 } 1720 1721 static void r8a66597_interval_timer(struct timer_list *t) 1722 { 1723 struct r8a66597_timers *timers = from_timer(timers, t, interval); 1724 struct r8a66597 *r8a66597 = timers->r8a66597; 1725 unsigned long flags; 1726 u16 pipenum; 1727 struct r8a66597_td *td; 1728 1729 spin_lock_irqsave(&r8a66597->lock, flags); 1730 1731 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1732 if (!(r8a66597->interval_map & (1 << pipenum))) 1733 continue; 1734 if (timer_pending(&r8a66597->timers[pipenum].interval)) 1735 continue; 1736 1737 td = r8a66597_get_td(r8a66597, pipenum); 1738 if (td) 1739 start_transfer(r8a66597, td); 1740 } 1741 1742 spin_unlock_irqrestore(&r8a66597->lock, flags); 1743 } 1744 1745 static void r8a66597_td_timer(struct timer_list *t) 1746 { 1747 struct r8a66597_timers *timers = from_timer(timers, t, td); 1748 struct r8a66597 *r8a66597 = timers->r8a66597; 1749 unsigned long flags; 1750 u16 pipenum; 1751 struct r8a66597_td *td, *new_td = NULL; 1752 struct r8a66597_pipe *pipe; 1753 1754 spin_lock_irqsave(&r8a66597->lock, flags); 1755 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1756 if (!(r8a66597->timeout_map & (1 << pipenum))) 1757 continue; 1758 if (timer_pending(&r8a66597->timers[pipenum].td)) 1759 continue; 1760 1761 td = r8a66597_get_td(r8a66597, pipenum); 1762 if (!td) { 1763 r8a66597->timeout_map &= ~(1 << pipenum); 1764 continue; 1765 } 1766 1767 if (td->urb->actual_length) { 1768 set_td_timer(r8a66597, td); 1769 break; 1770 } 1771 1772 pipe = td->pipe; 1773 pipe_stop(r8a66597, pipe); 1774 1775 /* Select a different address or endpoint */ 1776 new_td = td; 1777 do { 1778 list_move_tail(&new_td->queue, 1779 &r8a66597->pipe_queue[pipenum]); 1780 new_td = r8a66597_get_td(r8a66597, pipenum); 1781 if (!new_td) { 1782 new_td = td; 1783 break; 1784 } 1785 } while (td != new_td && td->address == new_td->address && 1786 td->pipe->info.epnum == new_td->pipe->info.epnum); 1787 1788 start_transfer(r8a66597, new_td); 1789 1790 if (td == new_td) 1791 r8a66597->timeout_map &= ~(1 << pipenum); 1792 else 1793 set_td_timer(r8a66597, new_td); 1794 break; 1795 } 1796 spin_unlock_irqrestore(&r8a66597->lock, flags); 1797 } 1798 1799 static void r8a66597_timer(struct timer_list *t) 1800 { 1801 struct r8a66597 *r8a66597 = from_timer(r8a66597, t, rh_timer); 1802 unsigned long flags; 1803 int port; 1804 1805 spin_lock_irqsave(&r8a66597->lock, flags); 1806 1807 for (port = 0; port < r8a66597->max_root_hub; port++) 1808 r8a66597_root_hub_control(r8a66597, port); 1809 1810 spin_unlock_irqrestore(&r8a66597->lock, flags); 1811 } 1812 1813 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1814 { 1815 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1816 1817 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1818 (urb->dev->state == USB_STATE_CONFIGURED)) 1819 return 1; 1820 else 1821 return 0; 1822 } 1823 1824 static int r8a66597_start(struct usb_hcd *hcd) 1825 { 1826 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1827 1828 hcd->state = HC_STATE_RUNNING; 1829 return enable_controller(r8a66597); 1830 } 1831 1832 static void r8a66597_stop(struct usb_hcd *hcd) 1833 { 1834 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1835 1836 disable_controller(r8a66597); 1837 } 1838 1839 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1840 { 1841 unsigned int usb_address = usb_pipedevice(urb->pipe); 1842 u16 root_port, hub_port; 1843 1844 if (usb_address == 0) { 1845 get_port_number(r8a66597, urb->dev->devpath, 1846 &root_port, &hub_port); 1847 set_devadd_reg(r8a66597, 0, 1848 get_r8a66597_usb_speed(urb->dev->speed), 1849 get_parent_r8a66597_address(r8a66597, urb->dev), 1850 hub_port, root_port); 1851 } 1852 } 1853 1854 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1855 struct urb *urb, 1856 struct usb_host_endpoint *hep) 1857 { 1858 struct r8a66597_td *td; 1859 u16 pipenum; 1860 1861 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1862 if (td == NULL) 1863 return NULL; 1864 1865 pipenum = r8a66597_get_pipenum(urb, hep); 1866 td->pipenum = pipenum; 1867 td->pipe = hep->hcpriv; 1868 td->urb = urb; 1869 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1870 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe); 1871 if (usb_pipecontrol(urb->pipe)) 1872 td->type = USB_PID_SETUP; 1873 else if (usb_pipein(urb->pipe)) 1874 td->type = USB_PID_IN; 1875 else 1876 td->type = USB_PID_OUT; 1877 INIT_LIST_HEAD(&td->queue); 1878 1879 return td; 1880 } 1881 1882 static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1883 struct urb *urb, 1884 gfp_t mem_flags) 1885 { 1886 struct usb_host_endpoint *hep = urb->ep; 1887 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1888 struct r8a66597_td *td = NULL; 1889 int ret, request = 0; 1890 unsigned long flags; 1891 1892 spin_lock_irqsave(&r8a66597->lock, flags); 1893 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1894 ret = -ENODEV; 1895 goto error_not_linked; 1896 } 1897 1898 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1899 if (ret) 1900 goto error_not_linked; 1901 1902 if (!hep->hcpriv) { 1903 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1904 GFP_ATOMIC); 1905 if (!hep->hcpriv) { 1906 ret = -ENOMEM; 1907 goto error; 1908 } 1909 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1910 if (usb_pipeendpoint(urb->pipe)) 1911 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1912 } 1913 1914 if (unlikely(check_pipe_config(r8a66597, urb))) 1915 init_pipe_config(r8a66597, urb); 1916 1917 set_address_zero(r8a66597, urb); 1918 td = r8a66597_make_td(r8a66597, urb, hep); 1919 if (td == NULL) { 1920 ret = -ENOMEM; 1921 goto error; 1922 } 1923 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1924 request = 1; 1925 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1926 urb->hcpriv = td; 1927 1928 if (request) { 1929 if (td->pipe->info.timer_interval) { 1930 r8a66597->interval_map |= 1 << td->pipenum; 1931 mod_timer(&r8a66597->timers[td->pipenum].interval, 1932 jiffies + msecs_to_jiffies( 1933 td->pipe->info.timer_interval)); 1934 } else { 1935 ret = start_transfer(r8a66597, td); 1936 if (ret < 0) { 1937 list_del(&td->queue); 1938 kfree(td); 1939 } 1940 } 1941 } else 1942 set_td_timer(r8a66597, td); 1943 1944 error: 1945 if (ret) 1946 usb_hcd_unlink_urb_from_ep(hcd, urb); 1947 error_not_linked: 1948 spin_unlock_irqrestore(&r8a66597->lock, flags); 1949 return ret; 1950 } 1951 1952 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1953 int status) 1954 { 1955 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1956 struct r8a66597_td *td; 1957 unsigned long flags; 1958 int rc; 1959 1960 spin_lock_irqsave(&r8a66597->lock, flags); 1961 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1962 if (rc) 1963 goto done; 1964 1965 if (urb->hcpriv) { 1966 td = urb->hcpriv; 1967 pipe_stop(r8a66597, td->pipe); 1968 pipe_irq_disable(r8a66597, td->pipenum); 1969 disable_irq_empty(r8a66597, td->pipenum); 1970 finish_request(r8a66597, td, td->pipenum, urb, status); 1971 } 1972 done: 1973 spin_unlock_irqrestore(&r8a66597->lock, flags); 1974 return rc; 1975 } 1976 1977 static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1978 struct usb_host_endpoint *hep) 1979 __acquires(r8a66597->lock) 1980 __releases(r8a66597->lock) 1981 { 1982 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1983 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1984 struct r8a66597_td *td; 1985 struct urb *urb = NULL; 1986 u16 pipenum; 1987 unsigned long flags; 1988 1989 if (pipe == NULL) 1990 return; 1991 pipenum = pipe->info.pipenum; 1992 1993 spin_lock_irqsave(&r8a66597->lock, flags); 1994 if (pipenum == 0) { 1995 kfree(hep->hcpriv); 1996 hep->hcpriv = NULL; 1997 spin_unlock_irqrestore(&r8a66597->lock, flags); 1998 return; 1999 } 2000 2001 pipe_stop(r8a66597, pipe); 2002 pipe_irq_disable(r8a66597, pipenum); 2003 disable_irq_empty(r8a66597, pipenum); 2004 td = r8a66597_get_td(r8a66597, pipenum); 2005 if (td) 2006 urb = td->urb; 2007 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 2008 kfree(hep->hcpriv); 2009 hep->hcpriv = NULL; 2010 spin_unlock_irqrestore(&r8a66597->lock, flags); 2011 } 2012 2013 static int r8a66597_get_frame(struct usb_hcd *hcd) 2014 { 2015 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2016 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 2017 } 2018 2019 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 2020 { 2021 int chix; 2022 struct usb_device *childdev; 2023 2024 if (udev->state == USB_STATE_CONFIGURED && 2025 udev->parent && udev->parent->devnum > 1 && 2026 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 2027 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 2028 2029 usb_hub_for_each_child(udev, chix, childdev) 2030 collect_usb_address_map(childdev, map); 2031 } 2032 2033 /* this function must be called with interrupt disabled */ 2034 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 2035 int addr) 2036 { 2037 struct r8a66597_device *dev; 2038 struct list_head *list = &r8a66597->child_device; 2039 2040 list_for_each_entry(dev, list, device_list) { 2041 if (dev->usb_address != addr) 2042 continue; 2043 2044 return dev; 2045 } 2046 2047 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); 2048 return NULL; 2049 } 2050 2051 static void update_usb_address_map(struct r8a66597 *r8a66597, 2052 struct usb_device *root_hub, 2053 unsigned long *map) 2054 { 2055 int i, j, addr; 2056 unsigned long diff; 2057 unsigned long flags; 2058 2059 for (i = 0; i < 4; i++) { 2060 diff = r8a66597->child_connect_map[i] ^ map[i]; 2061 if (!diff) 2062 continue; 2063 2064 for (j = 0; j < 32; j++) { 2065 if (!(diff & (1 << j))) 2066 continue; 2067 2068 addr = i * 32 + j; 2069 if (map[i] & (1 << j)) 2070 set_child_connect_map(r8a66597, addr); 2071 else { 2072 struct r8a66597_device *dev; 2073 2074 spin_lock_irqsave(&r8a66597->lock, flags); 2075 dev = get_r8a66597_device(r8a66597, addr); 2076 disable_r8a66597_pipe_all(r8a66597, dev); 2077 free_usb_address(r8a66597, dev, 0); 2078 put_child_connect_map(r8a66597, addr); 2079 spin_unlock_irqrestore(&r8a66597->lock, flags); 2080 } 2081 } 2082 } 2083 } 2084 2085 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2086 struct usb_hcd *hcd) 2087 { 2088 struct usb_bus *bus; 2089 unsigned long now_map[4]; 2090 2091 memset(now_map, 0, sizeof(now_map)); 2092 2093 mutex_lock(&usb_bus_idr_lock); 2094 bus = idr_find(&usb_bus_idr, hcd->self.busnum); 2095 if (bus && bus->root_hub) { 2096 collect_usb_address_map(bus->root_hub, now_map); 2097 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2098 } 2099 mutex_unlock(&usb_bus_idr_lock); 2100 } 2101 2102 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2103 { 2104 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2105 unsigned long flags; 2106 int i; 2107 2108 r8a66597_check_detect_child(r8a66597, hcd); 2109 2110 spin_lock_irqsave(&r8a66597->lock, flags); 2111 2112 *buf = 0; /* initialize (no change) */ 2113 2114 for (i = 0; i < r8a66597->max_root_hub; i++) { 2115 if (r8a66597->root_hub[i].port & 0xffff0000) 2116 *buf |= 1 << (i + 1); 2117 } 2118 2119 spin_unlock_irqrestore(&r8a66597->lock, flags); 2120 2121 return (*buf != 0); 2122 } 2123 2124 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2125 struct usb_hub_descriptor *desc) 2126 { 2127 desc->bDescriptorType = USB_DT_HUB; 2128 desc->bHubContrCurrent = 0; 2129 desc->bNbrPorts = r8a66597->max_root_hub; 2130 desc->bDescLength = 9; 2131 desc->bPwrOn2PwrGood = 0; 2132 desc->wHubCharacteristics = 2133 cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM); 2134 desc->u.hs.DeviceRemovable[0] = 2135 ((1 << r8a66597->max_root_hub) - 1) << 1; 2136 desc->u.hs.DeviceRemovable[1] = ~0; 2137 } 2138 2139 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 2140 u16 wIndex, char *buf, u16 wLength) 2141 { 2142 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2143 int ret; 2144 int port = (wIndex & 0x00FF) - 1; 2145 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2146 unsigned long flags; 2147 2148 ret = 0; 2149 2150 spin_lock_irqsave(&r8a66597->lock, flags); 2151 switch (typeReq) { 2152 case ClearHubFeature: 2153 case SetHubFeature: 2154 switch (wValue) { 2155 case C_HUB_OVER_CURRENT: 2156 case C_HUB_LOCAL_POWER: 2157 break; 2158 default: 2159 goto error; 2160 } 2161 break; 2162 case ClearPortFeature: 2163 if (wIndex > r8a66597->max_root_hub) 2164 goto error; 2165 if (wLength != 0) 2166 goto error; 2167 2168 switch (wValue) { 2169 case USB_PORT_FEAT_ENABLE: 2170 rh->port &= ~USB_PORT_STAT_POWER; 2171 break; 2172 case USB_PORT_FEAT_SUSPEND: 2173 break; 2174 case USB_PORT_FEAT_POWER: 2175 r8a66597_port_power(r8a66597, port, 0); 2176 break; 2177 case USB_PORT_FEAT_C_ENABLE: 2178 case USB_PORT_FEAT_C_SUSPEND: 2179 case USB_PORT_FEAT_C_CONNECTION: 2180 case USB_PORT_FEAT_C_OVER_CURRENT: 2181 case USB_PORT_FEAT_C_RESET: 2182 break; 2183 default: 2184 goto error; 2185 } 2186 rh->port &= ~(1 << wValue); 2187 break; 2188 case GetHubDescriptor: 2189 r8a66597_hub_descriptor(r8a66597, 2190 (struct usb_hub_descriptor *)buf); 2191 break; 2192 case GetHubStatus: 2193 *buf = 0x00; 2194 break; 2195 case GetPortStatus: 2196 if (wIndex > r8a66597->max_root_hub) 2197 goto error; 2198 *(__le32 *)buf = cpu_to_le32(rh->port); 2199 break; 2200 case SetPortFeature: 2201 if (wIndex > r8a66597->max_root_hub) 2202 goto error; 2203 if (wLength != 0) 2204 goto error; 2205 2206 switch (wValue) { 2207 case USB_PORT_FEAT_SUSPEND: 2208 break; 2209 case USB_PORT_FEAT_POWER: 2210 r8a66597_port_power(r8a66597, port, 1); 2211 rh->port |= USB_PORT_STAT_POWER; 2212 break; 2213 case USB_PORT_FEAT_RESET: { 2214 struct r8a66597_device *dev = rh->dev; 2215 2216 rh->port |= USB_PORT_STAT_RESET; 2217 2218 disable_r8a66597_pipe_all(r8a66597, dev); 2219 free_usb_address(r8a66597, dev, 1); 2220 2221 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2222 get_dvstctr_reg(port)); 2223 mod_timer(&r8a66597->rh_timer, 2224 jiffies + msecs_to_jiffies(50)); 2225 } 2226 break; 2227 default: 2228 goto error; 2229 } 2230 rh->port |= 1 << wValue; 2231 break; 2232 default: 2233 error: 2234 ret = -EPIPE; 2235 break; 2236 } 2237 2238 spin_unlock_irqrestore(&r8a66597->lock, flags); 2239 return ret; 2240 } 2241 2242 #if defined(CONFIG_PM) 2243 static int r8a66597_bus_suspend(struct usb_hcd *hcd) 2244 { 2245 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2246 int port; 2247 2248 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); 2249 2250 for (port = 0; port < r8a66597->max_root_hub; port++) { 2251 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2252 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2253 2254 if (!(rh->port & USB_PORT_STAT_ENABLE)) 2255 continue; 2256 2257 dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port); 2258 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ 2259 rh->port |= USB_PORT_STAT_SUSPEND; 2260 2261 if (rh->dev->udev->do_remote_wakeup) { 2262 msleep(3); /* waiting last SOF */ 2263 r8a66597_bset(r8a66597, RWUPE, dvstctr_reg); 2264 r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port)); 2265 r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port)); 2266 } 2267 } 2268 2269 r8a66597->bus_suspended = 1; 2270 2271 return 0; 2272 } 2273 2274 static int r8a66597_bus_resume(struct usb_hcd *hcd) 2275 { 2276 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2277 int port; 2278 2279 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); 2280 2281 for (port = 0; port < r8a66597->max_root_hub; port++) { 2282 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2283 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2284 2285 if (!(rh->port & USB_PORT_STAT_SUSPEND)) 2286 continue; 2287 2288 dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port); 2289 rh->port &= ~USB_PORT_STAT_SUSPEND; 2290 rh->port |= USB_PORT_STAT_C_SUSPEND << 16; 2291 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg); 2292 msleep(USB_RESUME_TIMEOUT); 2293 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg); 2294 } 2295 2296 return 0; 2297 2298 } 2299 #else 2300 #define r8a66597_bus_suspend NULL 2301 #define r8a66597_bus_resume NULL 2302 #endif 2303 2304 static const struct hc_driver r8a66597_hc_driver = { 2305 .description = hcd_name, 2306 .hcd_priv_size = sizeof(struct r8a66597), 2307 .irq = r8a66597_irq, 2308 2309 /* 2310 * generic hardware linkage 2311 */ 2312 .flags = HCD_USB2, 2313 2314 .start = r8a66597_start, 2315 .stop = r8a66597_stop, 2316 2317 /* 2318 * managing i/o requests and associated device resources 2319 */ 2320 .urb_enqueue = r8a66597_urb_enqueue, 2321 .urb_dequeue = r8a66597_urb_dequeue, 2322 .endpoint_disable = r8a66597_endpoint_disable, 2323 2324 /* 2325 * periodic schedule support 2326 */ 2327 .get_frame_number = r8a66597_get_frame, 2328 2329 /* 2330 * root hub support 2331 */ 2332 .hub_status_data = r8a66597_hub_status_data, 2333 .hub_control = r8a66597_hub_control, 2334 .bus_suspend = r8a66597_bus_suspend, 2335 .bus_resume = r8a66597_bus_resume, 2336 }; 2337 2338 #if defined(CONFIG_PM) 2339 static int r8a66597_suspend(struct device *dev) 2340 { 2341 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2342 int port; 2343 2344 dev_dbg(dev, "%s\n", __func__); 2345 2346 disable_controller(r8a66597); 2347 2348 for (port = 0; port < r8a66597->max_root_hub; port++) { 2349 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2350 2351 rh->port = 0x00000000; 2352 } 2353 2354 return 0; 2355 } 2356 2357 static int r8a66597_resume(struct device *dev) 2358 { 2359 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2360 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2361 2362 dev_dbg(dev, "%s\n", __func__); 2363 2364 enable_controller(r8a66597); 2365 usb_root_hub_lost_power(hcd->self.root_hub); 2366 2367 return 0; 2368 } 2369 2370 static const struct dev_pm_ops r8a66597_dev_pm_ops = { 2371 .suspend = r8a66597_suspend, 2372 .resume = r8a66597_resume, 2373 .poweroff = r8a66597_suspend, 2374 .restore = r8a66597_resume, 2375 }; 2376 2377 #define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops) 2378 #else /* if defined(CONFIG_PM) */ 2379 #define R8A66597_DEV_PM_OPS NULL 2380 #endif 2381 2382 static int r8a66597_remove(struct platform_device *pdev) 2383 { 2384 struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); 2385 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2386 2387 del_timer_sync(&r8a66597->rh_timer); 2388 usb_remove_hcd(hcd); 2389 iounmap(r8a66597->reg); 2390 if (r8a66597->pdata->on_chip) 2391 clk_put(r8a66597->clk); 2392 usb_put_hcd(hcd); 2393 return 0; 2394 } 2395 2396 static int r8a66597_probe(struct platform_device *pdev) 2397 { 2398 char clk_name[8]; 2399 struct resource *res = NULL, *ires; 2400 int irq = -1; 2401 void __iomem *reg = NULL; 2402 struct usb_hcd *hcd = NULL; 2403 struct r8a66597 *r8a66597; 2404 int ret = 0; 2405 int i; 2406 unsigned long irq_trigger; 2407 2408 if (usb_disabled()) 2409 return -ENODEV; 2410 2411 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2412 if (!res) { 2413 ret = -ENODEV; 2414 dev_err(&pdev->dev, "platform_get_resource error.\n"); 2415 goto clean_up; 2416 } 2417 2418 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2419 if (!ires) { 2420 ret = -ENODEV; 2421 dev_err(&pdev->dev, 2422 "platform_get_resource IORESOURCE_IRQ error.\n"); 2423 goto clean_up; 2424 } 2425 2426 irq = ires->start; 2427 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 2428 2429 reg = ioremap(res->start, resource_size(res)); 2430 if (reg == NULL) { 2431 ret = -ENOMEM; 2432 dev_err(&pdev->dev, "ioremap error.\n"); 2433 goto clean_up; 2434 } 2435 2436 if (pdev->dev.platform_data == NULL) { 2437 dev_err(&pdev->dev, "no platform data\n"); 2438 ret = -ENODEV; 2439 goto clean_up; 2440 } 2441 2442 /* initialize hcd */ 2443 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2444 if (!hcd) { 2445 ret = -ENOMEM; 2446 dev_err(&pdev->dev, "Failed to create hcd\n"); 2447 goto clean_up; 2448 } 2449 r8a66597 = hcd_to_r8a66597(hcd); 2450 memset(r8a66597, 0, sizeof(struct r8a66597)); 2451 platform_set_drvdata(pdev, r8a66597); 2452 r8a66597->pdata = dev_get_platdata(&pdev->dev); 2453 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; 2454 2455 if (r8a66597->pdata->on_chip) { 2456 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); 2457 r8a66597->clk = clk_get(&pdev->dev, clk_name); 2458 if (IS_ERR(r8a66597->clk)) { 2459 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", 2460 clk_name); 2461 ret = PTR_ERR(r8a66597->clk); 2462 goto clean_up2; 2463 } 2464 r8a66597->max_root_hub = 1; 2465 } else 2466 r8a66597->max_root_hub = 2; 2467 2468 spin_lock_init(&r8a66597->lock); 2469 timer_setup(&r8a66597->rh_timer, r8a66597_timer, 0); 2470 r8a66597->reg = reg; 2471 2472 /* make sure no interrupts are pending */ 2473 ret = r8a66597_clock_enable(r8a66597); 2474 if (ret < 0) 2475 goto clean_up3; 2476 disable_controller(r8a66597); 2477 2478 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2479 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2480 r8a66597->timers[i].r8a66597 = r8a66597; 2481 timer_setup(&r8a66597->timers[i].td, r8a66597_td_timer, 0); 2482 timer_setup(&r8a66597->timers[i].interval, 2483 r8a66597_interval_timer, 0); 2484 } 2485 INIT_LIST_HEAD(&r8a66597->child_device); 2486 2487 hcd->rsrc_start = res->start; 2488 hcd->has_tt = 1; 2489 2490 ret = usb_add_hcd(hcd, irq, irq_trigger); 2491 if (ret != 0) { 2492 dev_err(&pdev->dev, "Failed to add hcd\n"); 2493 goto clean_up3; 2494 } 2495 device_wakeup_enable(hcd->self.controller); 2496 2497 return 0; 2498 2499 clean_up3: 2500 if (r8a66597->pdata->on_chip) 2501 clk_put(r8a66597->clk); 2502 clean_up2: 2503 usb_put_hcd(hcd); 2504 2505 clean_up: 2506 if (reg) 2507 iounmap(reg); 2508 2509 return ret; 2510 } 2511 2512 static struct platform_driver r8a66597_driver = { 2513 .probe = r8a66597_probe, 2514 .remove = r8a66597_remove, 2515 .driver = { 2516 .name = hcd_name, 2517 .pm = R8A66597_DEV_PM_OPS, 2518 }, 2519 }; 2520 2521 module_platform_driver(r8a66597_driver); 2522