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 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 dev_dbg(&dev->udev->dev, "enable_pipe:\n"); 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 static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb, 815 int status) 816 __releases(r8a66597->lock) 817 __acquires(r8a66597->lock) 818 { 819 if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { 820 void *ptr; 821 822 for (ptr = urb->transfer_buffer; 823 ptr < urb->transfer_buffer + urb->transfer_buffer_length; 824 ptr += PAGE_SIZE) 825 flush_dcache_page(virt_to_page(ptr)); 826 } 827 828 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 829 spin_unlock(&r8a66597->lock); 830 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status); 831 spin_lock(&r8a66597->lock); 832 } 833 834 /* this function must be called with interrupt disabled */ 835 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 836 { 837 struct r8a66597_td *td, *next; 838 struct urb *urb; 839 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 840 841 if (list_empty(list)) 842 return; 843 844 list_for_each_entry_safe(td, next, list, queue) { 845 if (td->address != address) 846 continue; 847 848 urb = td->urb; 849 list_del(&td->queue); 850 kfree(td); 851 852 if (urb) 853 r8a66597_urb_done(r8a66597, urb, -ENODEV); 854 855 break; 856 } 857 } 858 859 /* this function must be called with interrupt disabled */ 860 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 861 struct r8a66597_device *dev) 862 { 863 int check_ep0 = 0; 864 u16 pipenum; 865 866 if (!dev) 867 return; 868 869 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 870 if (!dev->pipe_cnt[pipenum]) 871 continue; 872 873 if (!check_ep0) { 874 check_ep0 = 1; 875 force_dequeue(r8a66597, 0, dev->address); 876 } 877 878 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 879 dev->pipe_cnt[pipenum] = 0; 880 force_dequeue(r8a66597, pipenum, dev->address); 881 } 882 883 dev_dbg(&dev->udev->dev, "disable_pipe\n"); 884 885 r8a66597->dma_map &= ~(dev->dma_map); 886 dev->dma_map = 0; 887 } 888 889 static u16 get_interval(struct urb *urb, __u8 interval) 890 { 891 u16 time = 1; 892 int i; 893 894 if (urb->dev->speed == USB_SPEED_HIGH) { 895 if (interval > IITV) 896 time = IITV; 897 else 898 time = interval ? interval - 1 : 0; 899 } else { 900 if (interval > 128) { 901 time = IITV; 902 } else { 903 /* calculate the nearest value for PIPEPERI */ 904 for (i = 0; i < 7; i++) { 905 if ((1 << i) < interval && 906 (1 << (i + 1) > interval)) 907 time = 1 << i; 908 } 909 } 910 } 911 912 return time; 913 } 914 915 static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 916 { 917 __u8 i; 918 unsigned long time = 1; 919 920 if (usb_pipeisoc(urb->pipe)) 921 return 0; 922 923 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 924 for (i = 0; i < (interval - 1); i++) 925 time *= 2; 926 time = time * 125 / 1000; /* uSOF -> msec */ 927 } else { 928 time = interval; 929 } 930 931 return time; 932 } 933 934 /* this function must be called with interrupt disabled */ 935 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 936 struct usb_host_endpoint *hep, 937 struct usb_endpoint_descriptor *ep) 938 { 939 struct r8a66597_pipe_info info; 940 941 info.pipenum = get_empty_pipenum(r8a66597, ep); 942 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 943 info.epnum = usb_endpoint_num(ep); 944 info.maxpacket = usb_endpoint_maxp(ep); 945 info.type = get_r8a66597_type(usb_endpoint_type(ep)); 946 info.bufnum = get_bufnum(info.pipenum); 947 info.buf_bsize = get_buf_bsize(info.pipenum); 948 if (info.type == R8A66597_BULK) { 949 info.interval = 0; 950 info.timer_interval = 0; 951 } else { 952 info.interval = get_interval(urb, ep->bInterval); 953 info.timer_interval = get_timer_interval(urb, ep->bInterval); 954 } 955 if (usb_endpoint_dir_in(ep)) 956 info.dir_in = 1; 957 else 958 info.dir_in = 0; 959 960 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 961 } 962 963 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 964 { 965 struct r8a66597_device *dev; 966 967 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 968 dev->state = USB_STATE_CONFIGURED; 969 } 970 971 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 972 u16 pipenum) 973 { 974 if (pipenum == 0 && usb_pipeout(urb->pipe)) 975 enable_irq_empty(r8a66597, pipenum); 976 else 977 enable_irq_ready(r8a66597, pipenum); 978 979 if (!usb_pipeisoc(urb->pipe)) 980 enable_irq_nrdy(r8a66597, pipenum); 981 } 982 983 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 984 { 985 disable_irq_ready(r8a66597, pipenum); 986 disable_irq_nrdy(r8a66597, pipenum); 987 } 988 989 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 990 { 991 mod_timer(&r8a66597->rh_timer, 992 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 993 } 994 995 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, 996 int connect) 997 { 998 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 999 1000 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1001 rh->scount = R8A66597_MAX_SAMPLING; 1002 if (connect) 1003 rh->port |= USB_PORT_STAT_CONNECTION; 1004 else 1005 rh->port &= ~USB_PORT_STAT_CONNECTION; 1006 rh->port |= USB_PORT_STAT_C_CONNECTION << 16; 1007 1008 r8a66597_root_hub_start_polling(r8a66597); 1009 } 1010 1011 /* this function must be called with interrupt disabled */ 1012 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 1013 u16 syssts) 1014 __releases(r8a66597->lock) 1015 __acquires(r8a66597->lock) 1016 { 1017 if (syssts == SE0) { 1018 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1019 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1020 } else { 1021 if (syssts == FS_JSTS) 1022 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 1023 else if (syssts == LS_JSTS) 1024 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 1025 1026 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 1027 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 1028 1029 if (r8a66597->bus_suspended) 1030 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1031 } 1032 1033 spin_unlock(&r8a66597->lock); 1034 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597)); 1035 spin_lock(&r8a66597->lock); 1036 } 1037 1038 /* this function must be called with interrupt disabled */ 1039 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 1040 { 1041 u16 speed = get_rh_usb_speed(r8a66597, port); 1042 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1043 1044 rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED); 1045 if (speed == HSMODE) 1046 rh->port |= USB_PORT_STAT_HIGH_SPEED; 1047 else if (speed == LSMODE) 1048 rh->port |= USB_PORT_STAT_LOW_SPEED; 1049 1050 rh->port &= ~USB_PORT_STAT_RESET; 1051 rh->port |= USB_PORT_STAT_ENABLE; 1052 } 1053 1054 /* this function must be called with interrupt disabled */ 1055 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1056 { 1057 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1058 1059 disable_r8a66597_pipe_all(r8a66597, dev); 1060 free_usb_address(r8a66597, dev, 0); 1061 1062 start_root_hub_sampling(r8a66597, port, 0); 1063 } 1064 1065 /* this function must be called with interrupt disabled */ 1066 static void prepare_setup_packet(struct r8a66597 *r8a66597, 1067 struct r8a66597_td *td) 1068 { 1069 int i; 1070 __le16 *p = (__le16 *)td->urb->setup_packet; 1071 unsigned long setup_addr = USBREQ; 1072 1073 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1074 DCPMAXP); 1075 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1076 1077 for (i = 0; i < 4; i++) { 1078 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1079 setup_addr += 2; 1080 } 1081 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1082 } 1083 1084 /* this function must be called with interrupt disabled */ 1085 static void prepare_packet_read(struct r8a66597 *r8a66597, 1086 struct r8a66597_td *td) 1087 { 1088 struct urb *urb = td->urb; 1089 1090 if (usb_pipecontrol(urb->pipe)) { 1091 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1092 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1093 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1094 if (urb->actual_length == 0) { 1095 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1096 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1097 } 1098 pipe_irq_disable(r8a66597, td->pipenum); 1099 pipe_start(r8a66597, td->pipe); 1100 pipe_irq_enable(r8a66597, urb, td->pipenum); 1101 } else { 1102 if (urb->actual_length == 0) { 1103 pipe_irq_disable(r8a66597, td->pipenum); 1104 pipe_setting(r8a66597, td); 1105 pipe_stop(r8a66597, td->pipe); 1106 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1107 1108 if (td->pipe->pipetre) { 1109 r8a66597_write(r8a66597, TRCLR, 1110 td->pipe->pipetre); 1111 r8a66597_write(r8a66597, 1112 DIV_ROUND_UP 1113 (urb->transfer_buffer_length, 1114 td->maxpacket), 1115 td->pipe->pipetrn); 1116 r8a66597_bset(r8a66597, TRENB, 1117 td->pipe->pipetre); 1118 } 1119 1120 pipe_start(r8a66597, td->pipe); 1121 pipe_irq_enable(r8a66597, urb, td->pipenum); 1122 } 1123 } 1124 } 1125 1126 /* this function must be called with interrupt disabled */ 1127 static void prepare_packet_write(struct r8a66597 *r8a66597, 1128 struct r8a66597_td *td) 1129 { 1130 u16 tmp; 1131 struct urb *urb = td->urb; 1132 1133 if (usb_pipecontrol(urb->pipe)) { 1134 pipe_stop(r8a66597, td->pipe); 1135 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1136 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1137 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1138 if (urb->actual_length == 0) { 1139 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1140 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1141 } 1142 } else { 1143 if (urb->actual_length == 0) 1144 pipe_setting(r8a66597, td); 1145 if (td->pipe->pipetre) 1146 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1147 } 1148 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1149 1150 fifo_change_from_pipe(r8a66597, td->pipe); 1151 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1152 if (unlikely((tmp & FRDY) == 0)) 1153 pipe_irq_enable(r8a66597, urb, td->pipenum); 1154 else 1155 packet_write(r8a66597, td->pipenum); 1156 pipe_start(r8a66597, td->pipe); 1157 } 1158 1159 /* this function must be called with interrupt disabled */ 1160 static void prepare_status_packet(struct r8a66597 *r8a66597, 1161 struct r8a66597_td *td) 1162 { 1163 struct urb *urb = td->urb; 1164 1165 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1166 pipe_stop(r8a66597, td->pipe); 1167 1168 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1169 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1170 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1171 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1172 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1173 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1174 enable_irq_empty(r8a66597, 0); 1175 } else { 1176 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1177 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1178 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1179 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1180 enable_irq_ready(r8a66597, 0); 1181 } 1182 enable_irq_nrdy(r8a66597, 0); 1183 pipe_start(r8a66597, td->pipe); 1184 } 1185 1186 static int is_set_address(unsigned char *setup_packet) 1187 { 1188 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1189 setup_packet[1] == USB_REQ_SET_ADDRESS) 1190 return 1; 1191 else 1192 return 0; 1193 } 1194 1195 /* this function must be called with interrupt disabled */ 1196 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1197 { 1198 BUG_ON(!td); 1199 1200 switch (td->type) { 1201 case USB_PID_SETUP: 1202 if (is_set_address(td->urb->setup_packet)) { 1203 td->set_address = 1; 1204 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1205 td->urb); 1206 if (td->urb->setup_packet[2] == 0) 1207 return -EPIPE; 1208 } 1209 prepare_setup_packet(r8a66597, td); 1210 break; 1211 case USB_PID_IN: 1212 prepare_packet_read(r8a66597, td); 1213 break; 1214 case USB_PID_OUT: 1215 prepare_packet_write(r8a66597, td); 1216 break; 1217 case USB_PID_ACK: 1218 prepare_status_packet(r8a66597, td); 1219 break; 1220 default: 1221 printk(KERN_ERR "r8a66597: invalid type.\n"); 1222 break; 1223 } 1224 1225 return 0; 1226 } 1227 1228 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1229 { 1230 if (usb_pipeisoc(urb->pipe)) { 1231 if (urb->number_of_packets == td->iso_cnt) 1232 return 1; 1233 } 1234 1235 /* control or bulk or interrupt */ 1236 if ((urb->transfer_buffer_length <= urb->actual_length) || 1237 (td->short_packet) || (td->zero_packet)) 1238 return 1; 1239 1240 return 0; 1241 } 1242 1243 /* this function must be called with interrupt disabled */ 1244 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1245 { 1246 unsigned long time; 1247 1248 BUG_ON(!td); 1249 1250 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1251 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1252 r8a66597->timeout_map |= 1 << td->pipenum; 1253 switch (usb_pipetype(td->urb->pipe)) { 1254 case PIPE_INTERRUPT: 1255 case PIPE_ISOCHRONOUS: 1256 time = 30; 1257 break; 1258 default: 1259 time = 50; 1260 break; 1261 } 1262 1263 mod_timer(&r8a66597->timers[td->pipenum].td, 1264 jiffies + msecs_to_jiffies(time)); 1265 } 1266 } 1267 1268 /* this function must be called with interrupt disabled */ 1269 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1270 u16 pipenum, struct urb *urb, int status) 1271 __releases(r8a66597->lock) __acquires(r8a66597->lock) 1272 { 1273 int restart = 0; 1274 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1275 1276 r8a66597->timeout_map &= ~(1 << pipenum); 1277 1278 if (likely(td)) { 1279 if (td->set_address && (status != 0 || urb->unlinked)) 1280 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1281 1282 pipe_toggle_save(r8a66597, td->pipe, urb); 1283 list_del(&td->queue); 1284 kfree(td); 1285 } 1286 1287 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1288 restart = 1; 1289 1290 if (likely(urb)) { 1291 if (usb_pipeisoc(urb->pipe)) 1292 urb->start_frame = r8a66597_get_frame(hcd); 1293 1294 r8a66597_urb_done(r8a66597, urb, status); 1295 } 1296 1297 if (restart) { 1298 td = r8a66597_get_td(r8a66597, pipenum); 1299 if (unlikely(!td)) 1300 return; 1301 1302 start_transfer(r8a66597, td); 1303 set_td_timer(r8a66597, td); 1304 } 1305 } 1306 1307 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1308 { 1309 u16 tmp; 1310 int rcv_len, bufsize, urb_len, size; 1311 u16 *buf; 1312 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1313 struct urb *urb; 1314 int finish = 0; 1315 int status = 0; 1316 1317 if (unlikely(!td)) 1318 return; 1319 urb = td->urb; 1320 1321 fifo_change_from_pipe(r8a66597, td->pipe); 1322 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1323 if (unlikely((tmp & FRDY) == 0)) { 1324 pipe_stop(r8a66597, td->pipe); 1325 pipe_irq_disable(r8a66597, pipenum); 1326 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); 1327 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1328 return; 1329 } 1330 1331 /* prepare parameters */ 1332 rcv_len = tmp & DTLN; 1333 if (usb_pipeisoc(urb->pipe)) { 1334 buf = (u16 *)(urb->transfer_buffer + 1335 urb->iso_frame_desc[td->iso_cnt].offset); 1336 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1337 } else { 1338 buf = (void *)urb->transfer_buffer + urb->actual_length; 1339 urb_len = urb->transfer_buffer_length - urb->actual_length; 1340 } 1341 bufsize = min(urb_len, (int) td->maxpacket); 1342 if (rcv_len <= bufsize) { 1343 size = rcv_len; 1344 } else { 1345 size = bufsize; 1346 status = -EOVERFLOW; 1347 finish = 1; 1348 } 1349 1350 /* update parameters */ 1351 urb->actual_length += size; 1352 if (rcv_len == 0) 1353 td->zero_packet = 1; 1354 if (rcv_len < bufsize) { 1355 td->short_packet = 1; 1356 } 1357 if (usb_pipeisoc(urb->pipe)) { 1358 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1359 urb->iso_frame_desc[td->iso_cnt].status = status; 1360 td->iso_cnt++; 1361 finish = 0; 1362 } 1363 1364 /* check transfer finish */ 1365 if (finish || check_transfer_finish(td, urb)) { 1366 pipe_stop(r8a66597, td->pipe); 1367 pipe_irq_disable(r8a66597, pipenum); 1368 finish = 1; 1369 } 1370 1371 /* read fifo */ 1372 if (urb->transfer_buffer) { 1373 if (size == 0) 1374 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1375 else 1376 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1377 buf, size); 1378 } 1379 1380 if (finish && pipenum != 0) 1381 finish_request(r8a66597, td, pipenum, urb, status); 1382 } 1383 1384 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1385 { 1386 u16 tmp; 1387 int bufsize, size; 1388 u16 *buf; 1389 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1390 struct urb *urb; 1391 1392 if (unlikely(!td)) 1393 return; 1394 urb = td->urb; 1395 1396 fifo_change_from_pipe(r8a66597, td->pipe); 1397 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1398 if (unlikely((tmp & FRDY) == 0)) { 1399 pipe_stop(r8a66597, td->pipe); 1400 pipe_irq_disable(r8a66597, pipenum); 1401 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); 1402 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1403 return; 1404 } 1405 1406 /* prepare parameters */ 1407 bufsize = td->maxpacket; 1408 if (usb_pipeisoc(urb->pipe)) { 1409 buf = (u16 *)(urb->transfer_buffer + 1410 urb->iso_frame_desc[td->iso_cnt].offset); 1411 size = min(bufsize, 1412 (int)urb->iso_frame_desc[td->iso_cnt].length); 1413 } else { 1414 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1415 size = min_t(u32, bufsize, 1416 urb->transfer_buffer_length - urb->actual_length); 1417 } 1418 1419 /* write fifo */ 1420 if (pipenum > 0) 1421 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1422 if (urb->transfer_buffer) { 1423 r8a66597_write_fifo(r8a66597, td->pipe, buf, size); 1424 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1425 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1426 } 1427 1428 /* update parameters */ 1429 urb->actual_length += size; 1430 if (usb_pipeisoc(urb->pipe)) { 1431 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1432 urb->iso_frame_desc[td->iso_cnt].status = 0; 1433 td->iso_cnt++; 1434 } 1435 1436 /* check transfer finish */ 1437 if (check_transfer_finish(td, urb)) { 1438 disable_irq_ready(r8a66597, pipenum); 1439 enable_irq_empty(r8a66597, pipenum); 1440 if (!usb_pipeisoc(urb->pipe)) 1441 enable_irq_nrdy(r8a66597, pipenum); 1442 } else 1443 pipe_irq_enable(r8a66597, urb, pipenum); 1444 } 1445 1446 1447 static void check_next_phase(struct r8a66597 *r8a66597, int status) 1448 { 1449 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1450 struct urb *urb; 1451 u8 finish = 0; 1452 1453 if (unlikely(!td)) 1454 return; 1455 urb = td->urb; 1456 1457 switch (td->type) { 1458 case USB_PID_IN: 1459 case USB_PID_OUT: 1460 if (check_transfer_finish(td, urb)) 1461 td->type = USB_PID_ACK; 1462 break; 1463 case USB_PID_SETUP: 1464 if (urb->transfer_buffer_length == urb->actual_length) 1465 td->type = USB_PID_ACK; 1466 else if (usb_pipeout(urb->pipe)) 1467 td->type = USB_PID_OUT; 1468 else 1469 td->type = USB_PID_IN; 1470 break; 1471 case USB_PID_ACK: 1472 finish = 1; 1473 break; 1474 } 1475 1476 if (finish || status != 0 || urb->unlinked) 1477 finish_request(r8a66597, td, 0, urb, status); 1478 else 1479 start_transfer(r8a66597, td); 1480 } 1481 1482 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1483 { 1484 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1485 1486 if (td) { 1487 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1488 1489 if (pid == PID_NAK) 1490 return -ECONNRESET; 1491 else 1492 return -EPIPE; 1493 } 1494 return 0; 1495 } 1496 1497 static void irq_pipe_ready(struct r8a66597 *r8a66597) 1498 { 1499 u16 check; 1500 u16 pipenum; 1501 u16 mask; 1502 struct r8a66597_td *td; 1503 1504 mask = r8a66597_read(r8a66597, BRDYSTS) 1505 & r8a66597_read(r8a66597, BRDYENB); 1506 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1507 if (mask & BRDY0) { 1508 td = r8a66597_get_td(r8a66597, 0); 1509 if (td && td->type == USB_PID_IN) 1510 packet_read(r8a66597, 0); 1511 else 1512 pipe_irq_disable(r8a66597, 0); 1513 check_next_phase(r8a66597, 0); 1514 } 1515 1516 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1517 check = 1 << pipenum; 1518 if (mask & check) { 1519 td = r8a66597_get_td(r8a66597, pipenum); 1520 if (unlikely(!td)) 1521 continue; 1522 1523 if (td->type == USB_PID_IN) 1524 packet_read(r8a66597, pipenum); 1525 else if (td->type == USB_PID_OUT) 1526 packet_write(r8a66597, pipenum); 1527 } 1528 } 1529 } 1530 1531 static void irq_pipe_empty(struct r8a66597 *r8a66597) 1532 { 1533 u16 tmp; 1534 u16 check; 1535 u16 pipenum; 1536 u16 mask; 1537 struct r8a66597_td *td; 1538 1539 mask = r8a66597_read(r8a66597, BEMPSTS) 1540 & r8a66597_read(r8a66597, BEMPENB); 1541 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1542 if (mask & BEMP0) { 1543 cfifo_change(r8a66597, 0); 1544 td = r8a66597_get_td(r8a66597, 0); 1545 if (td && td->type != USB_PID_OUT) 1546 disable_irq_empty(r8a66597, 0); 1547 check_next_phase(r8a66597, 0); 1548 } 1549 1550 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1551 check = 1 << pipenum; 1552 if (mask & check) { 1553 struct r8a66597_td *td; 1554 td = r8a66597_get_td(r8a66597, pipenum); 1555 if (unlikely(!td)) 1556 continue; 1557 1558 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1559 if ((tmp & INBUFM) == 0) { 1560 disable_irq_empty(r8a66597, pipenum); 1561 pipe_irq_disable(r8a66597, pipenum); 1562 finish_request(r8a66597, td, pipenum, td->urb, 1563 0); 1564 } 1565 } 1566 } 1567 } 1568 1569 static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1570 { 1571 u16 check; 1572 u16 pipenum; 1573 u16 mask; 1574 int status; 1575 1576 mask = r8a66597_read(r8a66597, NRDYSTS) 1577 & r8a66597_read(r8a66597, NRDYENB); 1578 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1579 if (mask & NRDY0) { 1580 cfifo_change(r8a66597, 0); 1581 status = get_urb_error(r8a66597, 0); 1582 pipe_irq_disable(r8a66597, 0); 1583 check_next_phase(r8a66597, status); 1584 } 1585 1586 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1587 check = 1 << pipenum; 1588 if (mask & check) { 1589 struct r8a66597_td *td; 1590 td = r8a66597_get_td(r8a66597, pipenum); 1591 if (unlikely(!td)) 1592 continue; 1593 1594 status = get_urb_error(r8a66597, pipenum); 1595 pipe_irq_disable(r8a66597, pipenum); 1596 pipe_stop(r8a66597, td->pipe); 1597 finish_request(r8a66597, td, pipenum, td->urb, status); 1598 } 1599 } 1600 } 1601 1602 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1603 { 1604 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1605 u16 intsts0, intsts1, intsts2; 1606 u16 intenb0, intenb1, intenb2; 1607 u16 mask0, mask1, mask2; 1608 int status; 1609 1610 spin_lock(&r8a66597->lock); 1611 1612 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1613 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1614 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1615 intenb0 = r8a66597_read(r8a66597, INTENB0); 1616 intenb1 = r8a66597_read(r8a66597, INTENB1); 1617 intenb2 = r8a66597_read(r8a66597, INTENB2); 1618 1619 mask2 = intsts2 & intenb2; 1620 mask1 = intsts1 & intenb1; 1621 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1622 if (mask2) { 1623 if (mask2 & ATTCH) { 1624 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1625 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1626 1627 /* start usb bus sampling */ 1628 start_root_hub_sampling(r8a66597, 1, 1); 1629 } 1630 if (mask2 & DTCH) { 1631 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1632 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1633 r8a66597_usb_disconnect(r8a66597, 1); 1634 } 1635 if (mask2 & BCHG) { 1636 r8a66597_write(r8a66597, ~BCHG, INTSTS2); 1637 r8a66597_bclr(r8a66597, BCHGE, INTENB2); 1638 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1639 } 1640 } 1641 1642 if (mask1) { 1643 if (mask1 & ATTCH) { 1644 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1645 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1646 1647 /* start usb bus sampling */ 1648 start_root_hub_sampling(r8a66597, 0, 1); 1649 } 1650 if (mask1 & DTCH) { 1651 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1652 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1653 r8a66597_usb_disconnect(r8a66597, 0); 1654 } 1655 if (mask1 & BCHG) { 1656 r8a66597_write(r8a66597, ~BCHG, INTSTS1); 1657 r8a66597_bclr(r8a66597, BCHGE, INTENB1); 1658 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1659 } 1660 1661 if (mask1 & SIGN) { 1662 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1663 status = get_urb_error(r8a66597, 0); 1664 check_next_phase(r8a66597, status); 1665 } 1666 if (mask1 & SACK) { 1667 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1668 check_next_phase(r8a66597, 0); 1669 } 1670 } 1671 if (mask0) { 1672 if (mask0 & BRDY) 1673 irq_pipe_ready(r8a66597); 1674 if (mask0 & BEMP) 1675 irq_pipe_empty(r8a66597); 1676 if (mask0 & NRDY) 1677 irq_pipe_nrdy(r8a66597); 1678 } 1679 1680 spin_unlock(&r8a66597->lock); 1681 return IRQ_HANDLED; 1682 } 1683 1684 /* this function must be called with interrupt disabled */ 1685 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1686 { 1687 u16 tmp; 1688 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1689 1690 if (rh->port & USB_PORT_STAT_RESET) { 1691 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1692 1693 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1694 if ((tmp & USBRST) == USBRST) { 1695 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1696 dvstctr_reg); 1697 r8a66597_root_hub_start_polling(r8a66597); 1698 } else 1699 r8a66597_usb_connect(r8a66597, port); 1700 } 1701 1702 if (!(rh->port & USB_PORT_STAT_CONNECTION)) { 1703 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1704 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1705 } 1706 1707 if (rh->scount > 0) { 1708 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1709 if (tmp == rh->old_syssts) { 1710 rh->scount--; 1711 if (rh->scount == 0) 1712 r8a66597_check_syssts(r8a66597, port, tmp); 1713 else 1714 r8a66597_root_hub_start_polling(r8a66597); 1715 } else { 1716 rh->scount = R8A66597_MAX_SAMPLING; 1717 rh->old_syssts = tmp; 1718 r8a66597_root_hub_start_polling(r8a66597); 1719 } 1720 } 1721 } 1722 1723 static void r8a66597_interval_timer(struct timer_list *t) 1724 { 1725 struct r8a66597_timers *timers = from_timer(timers, t, interval); 1726 struct r8a66597 *r8a66597 = timers->r8a66597; 1727 unsigned long flags; 1728 u16 pipenum; 1729 struct r8a66597_td *td; 1730 1731 spin_lock_irqsave(&r8a66597->lock, flags); 1732 1733 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1734 if (!(r8a66597->interval_map & (1 << pipenum))) 1735 continue; 1736 if (timer_pending(&r8a66597->timers[pipenum].interval)) 1737 continue; 1738 1739 td = r8a66597_get_td(r8a66597, pipenum); 1740 if (td) 1741 start_transfer(r8a66597, td); 1742 } 1743 1744 spin_unlock_irqrestore(&r8a66597->lock, flags); 1745 } 1746 1747 static void r8a66597_td_timer(struct timer_list *t) 1748 { 1749 struct r8a66597_timers *timers = from_timer(timers, t, td); 1750 struct r8a66597 *r8a66597 = timers->r8a66597; 1751 unsigned long flags; 1752 u16 pipenum; 1753 struct r8a66597_td *td, *new_td = NULL; 1754 struct r8a66597_pipe *pipe; 1755 1756 spin_lock_irqsave(&r8a66597->lock, flags); 1757 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1758 if (!(r8a66597->timeout_map & (1 << pipenum))) 1759 continue; 1760 if (timer_pending(&r8a66597->timers[pipenum].td)) 1761 continue; 1762 1763 td = r8a66597_get_td(r8a66597, pipenum); 1764 if (!td) { 1765 r8a66597->timeout_map &= ~(1 << pipenum); 1766 continue; 1767 } 1768 1769 if (td->urb->actual_length) { 1770 set_td_timer(r8a66597, td); 1771 break; 1772 } 1773 1774 pipe = td->pipe; 1775 pipe_stop(r8a66597, pipe); 1776 1777 /* Select a different address or endpoint */ 1778 new_td = td; 1779 do { 1780 list_move_tail(&new_td->queue, 1781 &r8a66597->pipe_queue[pipenum]); 1782 new_td = r8a66597_get_td(r8a66597, pipenum); 1783 if (!new_td) { 1784 new_td = td; 1785 break; 1786 } 1787 } while (td != new_td && td->address == new_td->address && 1788 td->pipe->info.epnum == new_td->pipe->info.epnum); 1789 1790 start_transfer(r8a66597, new_td); 1791 1792 if (td == new_td) 1793 r8a66597->timeout_map &= ~(1 << pipenum); 1794 else 1795 set_td_timer(r8a66597, new_td); 1796 break; 1797 } 1798 spin_unlock_irqrestore(&r8a66597->lock, flags); 1799 } 1800 1801 static void r8a66597_timer(struct timer_list *t) 1802 { 1803 struct r8a66597 *r8a66597 = from_timer(r8a66597, t, rh_timer); 1804 unsigned long flags; 1805 int port; 1806 1807 spin_lock_irqsave(&r8a66597->lock, flags); 1808 1809 for (port = 0; port < r8a66597->max_root_hub; port++) 1810 r8a66597_root_hub_control(r8a66597, port); 1811 1812 spin_unlock_irqrestore(&r8a66597->lock, flags); 1813 } 1814 1815 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1816 { 1817 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1818 1819 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1820 (urb->dev->state == USB_STATE_CONFIGURED)) 1821 return 1; 1822 else 1823 return 0; 1824 } 1825 1826 static int r8a66597_start(struct usb_hcd *hcd) 1827 { 1828 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1829 1830 hcd->state = HC_STATE_RUNNING; 1831 return enable_controller(r8a66597); 1832 } 1833 1834 static void r8a66597_stop(struct usb_hcd *hcd) 1835 { 1836 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1837 1838 disable_controller(r8a66597); 1839 } 1840 1841 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1842 { 1843 unsigned int usb_address = usb_pipedevice(urb->pipe); 1844 u16 root_port, hub_port; 1845 1846 if (usb_address == 0) { 1847 get_port_number(r8a66597, urb->dev->devpath, 1848 &root_port, &hub_port); 1849 set_devadd_reg(r8a66597, 0, 1850 get_r8a66597_usb_speed(urb->dev->speed), 1851 get_parent_r8a66597_address(r8a66597, urb->dev), 1852 hub_port, root_port); 1853 } 1854 } 1855 1856 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1857 struct urb *urb, 1858 struct usb_host_endpoint *hep) 1859 { 1860 struct r8a66597_td *td; 1861 u16 pipenum; 1862 1863 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1864 if (td == NULL) 1865 return NULL; 1866 1867 pipenum = r8a66597_get_pipenum(urb, hep); 1868 td->pipenum = pipenum; 1869 td->pipe = hep->hcpriv; 1870 td->urb = urb; 1871 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1872 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1873 !usb_pipein(urb->pipe)); 1874 if (usb_pipecontrol(urb->pipe)) 1875 td->type = USB_PID_SETUP; 1876 else if (usb_pipein(urb->pipe)) 1877 td->type = USB_PID_IN; 1878 else 1879 td->type = USB_PID_OUT; 1880 INIT_LIST_HEAD(&td->queue); 1881 1882 return td; 1883 } 1884 1885 static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1886 struct urb *urb, 1887 gfp_t mem_flags) 1888 { 1889 struct usb_host_endpoint *hep = urb->ep; 1890 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1891 struct r8a66597_td *td = NULL; 1892 int ret, request = 0; 1893 unsigned long flags; 1894 1895 spin_lock_irqsave(&r8a66597->lock, flags); 1896 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1897 ret = -ENODEV; 1898 goto error_not_linked; 1899 } 1900 1901 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1902 if (ret) 1903 goto error_not_linked; 1904 1905 if (!hep->hcpriv) { 1906 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1907 GFP_ATOMIC); 1908 if (!hep->hcpriv) { 1909 ret = -ENOMEM; 1910 goto error; 1911 } 1912 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1913 if (usb_pipeendpoint(urb->pipe)) 1914 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1915 } 1916 1917 if (unlikely(check_pipe_config(r8a66597, urb))) 1918 init_pipe_config(r8a66597, urb); 1919 1920 set_address_zero(r8a66597, urb); 1921 td = r8a66597_make_td(r8a66597, urb, hep); 1922 if (td == NULL) { 1923 ret = -ENOMEM; 1924 goto error; 1925 } 1926 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1927 request = 1; 1928 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1929 urb->hcpriv = td; 1930 1931 if (request) { 1932 if (td->pipe->info.timer_interval) { 1933 r8a66597->interval_map |= 1 << td->pipenum; 1934 mod_timer(&r8a66597->timers[td->pipenum].interval, 1935 jiffies + msecs_to_jiffies( 1936 td->pipe->info.timer_interval)); 1937 } else { 1938 ret = start_transfer(r8a66597, td); 1939 if (ret < 0) { 1940 list_del(&td->queue); 1941 kfree(td); 1942 } 1943 } 1944 } else 1945 set_td_timer(r8a66597, td); 1946 1947 error: 1948 if (ret) 1949 usb_hcd_unlink_urb_from_ep(hcd, urb); 1950 error_not_linked: 1951 spin_unlock_irqrestore(&r8a66597->lock, flags); 1952 return ret; 1953 } 1954 1955 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1956 int status) 1957 { 1958 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1959 struct r8a66597_td *td; 1960 unsigned long flags; 1961 int rc; 1962 1963 spin_lock_irqsave(&r8a66597->lock, flags); 1964 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1965 if (rc) 1966 goto done; 1967 1968 if (urb->hcpriv) { 1969 td = urb->hcpriv; 1970 pipe_stop(r8a66597, td->pipe); 1971 pipe_irq_disable(r8a66597, td->pipenum); 1972 disable_irq_empty(r8a66597, td->pipenum); 1973 finish_request(r8a66597, td, td->pipenum, urb, status); 1974 } 1975 done: 1976 spin_unlock_irqrestore(&r8a66597->lock, flags); 1977 return rc; 1978 } 1979 1980 static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1981 struct usb_host_endpoint *hep) 1982 __acquires(r8a66597->lock) 1983 __releases(r8a66597->lock) 1984 { 1985 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1986 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1987 struct r8a66597_td *td; 1988 struct urb *urb = NULL; 1989 u16 pipenum; 1990 unsigned long flags; 1991 1992 if (pipe == NULL) 1993 return; 1994 pipenum = pipe->info.pipenum; 1995 1996 spin_lock_irqsave(&r8a66597->lock, flags); 1997 if (pipenum == 0) { 1998 kfree(hep->hcpriv); 1999 hep->hcpriv = NULL; 2000 spin_unlock_irqrestore(&r8a66597->lock, flags); 2001 return; 2002 } 2003 2004 pipe_stop(r8a66597, pipe); 2005 pipe_irq_disable(r8a66597, pipenum); 2006 disable_irq_empty(r8a66597, pipenum); 2007 td = r8a66597_get_td(r8a66597, pipenum); 2008 if (td) 2009 urb = td->urb; 2010 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 2011 kfree(hep->hcpriv); 2012 hep->hcpriv = NULL; 2013 spin_unlock_irqrestore(&r8a66597->lock, flags); 2014 } 2015 2016 static int r8a66597_get_frame(struct usb_hcd *hcd) 2017 { 2018 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2019 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 2020 } 2021 2022 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 2023 { 2024 int chix; 2025 struct usb_device *childdev; 2026 2027 if (udev->state == USB_STATE_CONFIGURED && 2028 udev->parent && udev->parent->devnum > 1 && 2029 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 2030 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 2031 2032 usb_hub_for_each_child(udev, chix, childdev) 2033 collect_usb_address_map(childdev, map); 2034 } 2035 2036 /* this function must be called with interrupt disabled */ 2037 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 2038 int addr) 2039 { 2040 struct r8a66597_device *dev; 2041 struct list_head *list = &r8a66597->child_device; 2042 2043 list_for_each_entry(dev, list, device_list) { 2044 if (dev->usb_address != addr) 2045 continue; 2046 2047 return dev; 2048 } 2049 2050 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); 2051 return NULL; 2052 } 2053 2054 static void update_usb_address_map(struct r8a66597 *r8a66597, 2055 struct usb_device *root_hub, 2056 unsigned long *map) 2057 { 2058 int i, j, addr; 2059 unsigned long diff; 2060 unsigned long flags; 2061 2062 for (i = 0; i < 4; i++) { 2063 diff = r8a66597->child_connect_map[i] ^ map[i]; 2064 if (!diff) 2065 continue; 2066 2067 for (j = 0; j < 32; j++) { 2068 if (!(diff & (1 << j))) 2069 continue; 2070 2071 addr = i * 32 + j; 2072 if (map[i] & (1 << j)) 2073 set_child_connect_map(r8a66597, addr); 2074 else { 2075 struct r8a66597_device *dev; 2076 2077 spin_lock_irqsave(&r8a66597->lock, flags); 2078 dev = get_r8a66597_device(r8a66597, addr); 2079 disable_r8a66597_pipe_all(r8a66597, dev); 2080 free_usb_address(r8a66597, dev, 0); 2081 put_child_connect_map(r8a66597, addr); 2082 spin_unlock_irqrestore(&r8a66597->lock, flags); 2083 } 2084 } 2085 } 2086 } 2087 2088 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2089 struct usb_hcd *hcd) 2090 { 2091 struct usb_bus *bus; 2092 unsigned long now_map[4]; 2093 2094 memset(now_map, 0, sizeof(now_map)); 2095 2096 mutex_lock(&usb_bus_idr_lock); 2097 bus = idr_find(&usb_bus_idr, hcd->self.busnum); 2098 if (bus && bus->root_hub) { 2099 collect_usb_address_map(bus->root_hub, now_map); 2100 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2101 } 2102 mutex_unlock(&usb_bus_idr_lock); 2103 } 2104 2105 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2106 { 2107 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2108 unsigned long flags; 2109 int i; 2110 2111 r8a66597_check_detect_child(r8a66597, hcd); 2112 2113 spin_lock_irqsave(&r8a66597->lock, flags); 2114 2115 *buf = 0; /* initialize (no change) */ 2116 2117 for (i = 0; i < r8a66597->max_root_hub; i++) { 2118 if (r8a66597->root_hub[i].port & 0xffff0000) 2119 *buf |= 1 << (i + 1); 2120 } 2121 2122 spin_unlock_irqrestore(&r8a66597->lock, flags); 2123 2124 return (*buf != 0); 2125 } 2126 2127 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2128 struct usb_hub_descriptor *desc) 2129 { 2130 desc->bDescriptorType = USB_DT_HUB; 2131 desc->bHubContrCurrent = 0; 2132 desc->bNbrPorts = r8a66597->max_root_hub; 2133 desc->bDescLength = 9; 2134 desc->bPwrOn2PwrGood = 0; 2135 desc->wHubCharacteristics = 2136 cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM); 2137 desc->u.hs.DeviceRemovable[0] = 2138 ((1 << r8a66597->max_root_hub) - 1) << 1; 2139 desc->u.hs.DeviceRemovable[1] = ~0; 2140 } 2141 2142 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 2143 u16 wIndex, char *buf, u16 wLength) 2144 { 2145 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2146 int ret; 2147 int port = (wIndex & 0x00FF) - 1; 2148 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2149 unsigned long flags; 2150 2151 ret = 0; 2152 2153 spin_lock_irqsave(&r8a66597->lock, flags); 2154 switch (typeReq) { 2155 case ClearHubFeature: 2156 case SetHubFeature: 2157 switch (wValue) { 2158 case C_HUB_OVER_CURRENT: 2159 case C_HUB_LOCAL_POWER: 2160 break; 2161 default: 2162 goto error; 2163 } 2164 break; 2165 case ClearPortFeature: 2166 if (wIndex > r8a66597->max_root_hub) 2167 goto error; 2168 if (wLength != 0) 2169 goto error; 2170 2171 switch (wValue) { 2172 case USB_PORT_FEAT_ENABLE: 2173 rh->port &= ~USB_PORT_STAT_POWER; 2174 break; 2175 case USB_PORT_FEAT_SUSPEND: 2176 break; 2177 case USB_PORT_FEAT_POWER: 2178 r8a66597_port_power(r8a66597, port, 0); 2179 break; 2180 case USB_PORT_FEAT_C_ENABLE: 2181 case USB_PORT_FEAT_C_SUSPEND: 2182 case USB_PORT_FEAT_C_CONNECTION: 2183 case USB_PORT_FEAT_C_OVER_CURRENT: 2184 case USB_PORT_FEAT_C_RESET: 2185 break; 2186 default: 2187 goto error; 2188 } 2189 rh->port &= ~(1 << wValue); 2190 break; 2191 case GetHubDescriptor: 2192 r8a66597_hub_descriptor(r8a66597, 2193 (struct usb_hub_descriptor *)buf); 2194 break; 2195 case GetHubStatus: 2196 *buf = 0x00; 2197 break; 2198 case GetPortStatus: 2199 if (wIndex > r8a66597->max_root_hub) 2200 goto error; 2201 *(__le32 *)buf = cpu_to_le32(rh->port); 2202 break; 2203 case SetPortFeature: 2204 if (wIndex > r8a66597->max_root_hub) 2205 goto error; 2206 if (wLength != 0) 2207 goto error; 2208 2209 switch (wValue) { 2210 case USB_PORT_FEAT_SUSPEND: 2211 break; 2212 case USB_PORT_FEAT_POWER: 2213 r8a66597_port_power(r8a66597, port, 1); 2214 rh->port |= USB_PORT_STAT_POWER; 2215 break; 2216 case USB_PORT_FEAT_RESET: { 2217 struct r8a66597_device *dev = rh->dev; 2218 2219 rh->port |= USB_PORT_STAT_RESET; 2220 2221 disable_r8a66597_pipe_all(r8a66597, dev); 2222 free_usb_address(r8a66597, dev, 1); 2223 2224 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2225 get_dvstctr_reg(port)); 2226 mod_timer(&r8a66597->rh_timer, 2227 jiffies + msecs_to_jiffies(50)); 2228 } 2229 break; 2230 default: 2231 goto error; 2232 } 2233 rh->port |= 1 << wValue; 2234 break; 2235 default: 2236 error: 2237 ret = -EPIPE; 2238 break; 2239 } 2240 2241 spin_unlock_irqrestore(&r8a66597->lock, flags); 2242 return ret; 2243 } 2244 2245 #if defined(CONFIG_PM) 2246 static int r8a66597_bus_suspend(struct usb_hcd *hcd) 2247 { 2248 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2249 int port; 2250 2251 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); 2252 2253 for (port = 0; port < r8a66597->max_root_hub; port++) { 2254 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2255 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2256 2257 if (!(rh->port & USB_PORT_STAT_ENABLE)) 2258 continue; 2259 2260 dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port); 2261 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ 2262 rh->port |= USB_PORT_STAT_SUSPEND; 2263 2264 if (rh->dev->udev->do_remote_wakeup) { 2265 msleep(3); /* waiting last SOF */ 2266 r8a66597_bset(r8a66597, RWUPE, dvstctr_reg); 2267 r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port)); 2268 r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port)); 2269 } 2270 } 2271 2272 r8a66597->bus_suspended = 1; 2273 2274 return 0; 2275 } 2276 2277 static int r8a66597_bus_resume(struct usb_hcd *hcd) 2278 { 2279 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2280 int port; 2281 2282 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); 2283 2284 for (port = 0; port < r8a66597->max_root_hub; port++) { 2285 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2286 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2287 2288 if (!(rh->port & USB_PORT_STAT_SUSPEND)) 2289 continue; 2290 2291 dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port); 2292 rh->port &= ~USB_PORT_STAT_SUSPEND; 2293 rh->port |= USB_PORT_STAT_C_SUSPEND << 16; 2294 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg); 2295 msleep(USB_RESUME_TIMEOUT); 2296 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg); 2297 } 2298 2299 return 0; 2300 2301 } 2302 #else 2303 #define r8a66597_bus_suspend NULL 2304 #define r8a66597_bus_resume NULL 2305 #endif 2306 2307 static const struct hc_driver r8a66597_hc_driver = { 2308 .description = hcd_name, 2309 .hcd_priv_size = sizeof(struct r8a66597), 2310 .irq = r8a66597_irq, 2311 2312 /* 2313 * generic hardware linkage 2314 */ 2315 .flags = HCD_USB2, 2316 2317 .start = r8a66597_start, 2318 .stop = r8a66597_stop, 2319 2320 /* 2321 * managing i/o requests and associated device resources 2322 */ 2323 .urb_enqueue = r8a66597_urb_enqueue, 2324 .urb_dequeue = r8a66597_urb_dequeue, 2325 .endpoint_disable = r8a66597_endpoint_disable, 2326 2327 /* 2328 * periodic schedule support 2329 */ 2330 .get_frame_number = r8a66597_get_frame, 2331 2332 /* 2333 * root hub support 2334 */ 2335 .hub_status_data = r8a66597_hub_status_data, 2336 .hub_control = r8a66597_hub_control, 2337 .bus_suspend = r8a66597_bus_suspend, 2338 .bus_resume = r8a66597_bus_resume, 2339 }; 2340 2341 #if defined(CONFIG_PM) 2342 static int r8a66597_suspend(struct device *dev) 2343 { 2344 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2345 int port; 2346 2347 dev_dbg(dev, "%s\n", __func__); 2348 2349 disable_controller(r8a66597); 2350 2351 for (port = 0; port < r8a66597->max_root_hub; port++) { 2352 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2353 2354 rh->port = 0x00000000; 2355 } 2356 2357 return 0; 2358 } 2359 2360 static int r8a66597_resume(struct device *dev) 2361 { 2362 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2363 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2364 2365 dev_dbg(dev, "%s\n", __func__); 2366 2367 enable_controller(r8a66597); 2368 usb_root_hub_lost_power(hcd->self.root_hub); 2369 2370 return 0; 2371 } 2372 2373 static const struct dev_pm_ops r8a66597_dev_pm_ops = { 2374 .suspend = r8a66597_suspend, 2375 .resume = r8a66597_resume, 2376 .poweroff = r8a66597_suspend, 2377 .restore = r8a66597_resume, 2378 }; 2379 2380 #define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops) 2381 #else /* if defined(CONFIG_PM) */ 2382 #define R8A66597_DEV_PM_OPS NULL 2383 #endif 2384 2385 static int r8a66597_remove(struct platform_device *pdev) 2386 { 2387 struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); 2388 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2389 2390 del_timer_sync(&r8a66597->rh_timer); 2391 usb_remove_hcd(hcd); 2392 iounmap(r8a66597->reg); 2393 if (r8a66597->pdata->on_chip) 2394 clk_put(r8a66597->clk); 2395 usb_put_hcd(hcd); 2396 return 0; 2397 } 2398 2399 static int r8a66597_probe(struct platform_device *pdev) 2400 { 2401 char clk_name[8]; 2402 struct resource *res = NULL, *ires; 2403 int irq = -1; 2404 void __iomem *reg = NULL; 2405 struct usb_hcd *hcd = NULL; 2406 struct r8a66597 *r8a66597; 2407 int ret = 0; 2408 int i; 2409 unsigned long irq_trigger; 2410 2411 if (usb_disabled()) 2412 return -ENODEV; 2413 2414 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2415 if (!res) { 2416 ret = -ENODEV; 2417 dev_err(&pdev->dev, "platform_get_resource error.\n"); 2418 goto clean_up; 2419 } 2420 2421 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2422 if (!ires) { 2423 ret = -ENODEV; 2424 dev_err(&pdev->dev, 2425 "platform_get_resource IORESOURCE_IRQ error.\n"); 2426 goto clean_up; 2427 } 2428 2429 irq = ires->start; 2430 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 2431 2432 reg = ioremap(res->start, resource_size(res)); 2433 if (reg == NULL) { 2434 ret = -ENOMEM; 2435 dev_err(&pdev->dev, "ioremap error.\n"); 2436 goto clean_up; 2437 } 2438 2439 if (pdev->dev.platform_data == NULL) { 2440 dev_err(&pdev->dev, "no platform data\n"); 2441 ret = -ENODEV; 2442 goto clean_up; 2443 } 2444 2445 /* initialize hcd */ 2446 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2447 if (!hcd) { 2448 ret = -ENOMEM; 2449 dev_err(&pdev->dev, "Failed to create hcd\n"); 2450 goto clean_up; 2451 } 2452 r8a66597 = hcd_to_r8a66597(hcd); 2453 memset(r8a66597, 0, sizeof(struct r8a66597)); 2454 platform_set_drvdata(pdev, r8a66597); 2455 r8a66597->pdata = dev_get_platdata(&pdev->dev); 2456 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; 2457 2458 if (r8a66597->pdata->on_chip) { 2459 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); 2460 r8a66597->clk = clk_get(&pdev->dev, clk_name); 2461 if (IS_ERR(r8a66597->clk)) { 2462 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", 2463 clk_name); 2464 ret = PTR_ERR(r8a66597->clk); 2465 goto clean_up2; 2466 } 2467 r8a66597->max_root_hub = 1; 2468 } else 2469 r8a66597->max_root_hub = 2; 2470 2471 spin_lock_init(&r8a66597->lock); 2472 timer_setup(&r8a66597->rh_timer, r8a66597_timer, 0); 2473 r8a66597->reg = reg; 2474 2475 /* make sure no interrupts are pending */ 2476 ret = r8a66597_clock_enable(r8a66597); 2477 if (ret < 0) 2478 goto clean_up3; 2479 disable_controller(r8a66597); 2480 2481 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2482 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2483 r8a66597->timers[i].r8a66597 = r8a66597; 2484 timer_setup(&r8a66597->timers[i].td, r8a66597_td_timer, 0); 2485 timer_setup(&r8a66597->timers[i].interval, 2486 r8a66597_interval_timer, 0); 2487 } 2488 INIT_LIST_HEAD(&r8a66597->child_device); 2489 2490 hcd->rsrc_start = res->start; 2491 hcd->has_tt = 1; 2492 2493 ret = usb_add_hcd(hcd, irq, irq_trigger); 2494 if (ret != 0) { 2495 dev_err(&pdev->dev, "Failed to add hcd\n"); 2496 goto clean_up3; 2497 } 2498 device_wakeup_enable(hcd->self.controller); 2499 2500 return 0; 2501 2502 clean_up3: 2503 if (r8a66597->pdata->on_chip) 2504 clk_put(r8a66597->clk); 2505 clean_up2: 2506 usb_put_hcd(hcd); 2507 2508 clean_up: 2509 if (reg) 2510 iounmap(reg); 2511 2512 return ret; 2513 } 2514 2515 static struct platform_driver r8a66597_driver = { 2516 .probe = r8a66597_probe, 2517 .remove = r8a66597_remove, 2518 .driver = { 2519 .name = hcd_name, 2520 .pm = R8A66597_DEV_PM_OPS, 2521 }, 2522 }; 2523 2524 module_platform_driver(r8a66597_driver); 2525