1 /* 2 * R8A66597 HCD (Host Controller Driver) 3 * 4 * Copyright (C) 2006-2007 Renesas Solutions Corp. 5 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO) 6 * Portions Copyright (C) 2004-2005 David Brownell 7 * Portions Copyright (C) 1999 Roman Weissgaerber 8 * 9 * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; version 2 of the License. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 23 * 24 */ 25 26 #include <linux/module.h> 27 #include <linux/kernel.h> 28 #include <linux/sched.h> 29 #include <linux/smp_lock.h> 30 #include <linux/errno.h> 31 #include <linux/init.h> 32 #include <linux/timer.h> 33 #include <linux/delay.h> 34 #include <linux/list.h> 35 #include <linux/interrupt.h> 36 #include <linux/usb.h> 37 #include <linux/platform_device.h> 38 #include <linux/io.h> 39 #include <linux/irq.h> 40 41 #include "../core/hcd.h" 42 #include "r8a66597.h" 43 44 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); 45 MODULE_LICENSE("GPL"); 46 MODULE_AUTHOR("Yoshihiro Shimoda"); 47 MODULE_ALIAS("platform:r8a66597_hcd"); 48 49 #define DRIVER_VERSION "10 Apr 2008" 50 51 static const char hcd_name[] = "r8a66597_hcd"; 52 53 /* module parameters */ 54 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597) 55 static unsigned short clock = XTAL12; 56 module_param(clock, ushort, 0644); 57 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 " 58 "(default=0)"); 59 #endif 60 61 static unsigned short vif = LDRV; 62 module_param(vif, ushort, 0644); 63 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)"); 64 65 static unsigned short endian; 66 module_param(endian, ushort, 0644); 67 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)"); 68 69 static unsigned short irq_sense = INTL; 70 module_param(irq_sense, ushort, 0644); 71 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 " 72 "(default=32)"); 73 74 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 75 static int r8a66597_get_frame(struct usb_hcd *hcd); 76 77 /* this function must be called with interrupt disabled */ 78 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 79 unsigned long reg) 80 { 81 u16 tmp; 82 83 tmp = r8a66597_read(r8a66597, INTENB0); 84 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 85 r8a66597_bset(r8a66597, 1 << pipenum, reg); 86 r8a66597_write(r8a66597, tmp, INTENB0); 87 } 88 89 /* this function must be called with interrupt disabled */ 90 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 91 unsigned long reg) 92 { 93 u16 tmp; 94 95 tmp = r8a66597_read(r8a66597, INTENB0); 96 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 97 r8a66597_bclr(r8a66597, 1 << pipenum, reg); 98 r8a66597_write(r8a66597, tmp, INTENB0); 99 } 100 101 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, 102 u16 usbspd, u8 upphub, u8 hubport, int port) 103 { 104 u16 val; 105 unsigned long devadd_reg = get_devadd_addr(r8a66597_address); 106 107 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); 108 r8a66597_write(r8a66597, val, devadd_reg); 109 } 110 111 static int r8a66597_clock_enable(struct r8a66597 *r8a66597) 112 { 113 u16 tmp; 114 int i = 0; 115 116 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) 117 do { 118 r8a66597_write(r8a66597, SCKE, SYSCFG0); 119 tmp = r8a66597_read(r8a66597, SYSCFG0); 120 if (i++ > 1000) { 121 err("register access fail."); 122 return -ENXIO; 123 } 124 } while ((tmp & SCKE) != SCKE); 125 r8a66597_write(r8a66597, 0x04, 0x02); 126 #else 127 do { 128 r8a66597_write(r8a66597, USBE, SYSCFG0); 129 tmp = r8a66597_read(r8a66597, SYSCFG0); 130 if (i++ > 1000) { 131 err("register access fail."); 132 return -ENXIO; 133 } 134 } while ((tmp & USBE) != USBE); 135 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 136 r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0); 137 138 i = 0; 139 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 140 do { 141 msleep(1); 142 tmp = r8a66597_read(r8a66597, SYSCFG0); 143 if (i++ > 500) { 144 err("register access fail."); 145 return -ENXIO; 146 } 147 } while ((tmp & SCKE) != SCKE); 148 #endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */ 149 150 return 0; 151 } 152 153 static void r8a66597_clock_disable(struct r8a66597 *r8a66597) 154 { 155 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 156 udelay(1); 157 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597) 158 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 159 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 160 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 161 #endif 162 } 163 164 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) 165 { 166 u16 val; 167 168 val = port ? DRPD : DCFM | DRPD; 169 r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); 170 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 171 172 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); 173 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); 174 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 175 } 176 177 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) 178 { 179 u16 val, tmp; 180 181 r8a66597_write(r8a66597, 0, get_intenb_reg(port)); 182 r8a66597_write(r8a66597, 0, get_intsts_reg(port)); 183 184 r8a66597_port_power(r8a66597, port, 0); 185 186 do { 187 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; 188 udelay(640); 189 } while (tmp == EDGESTS); 190 191 val = port ? DRPD : DCFM | DRPD; 192 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); 193 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 194 } 195 196 static int enable_controller(struct r8a66597 *r8a66597) 197 { 198 int ret, port; 199 200 ret = r8a66597_clock_enable(r8a66597); 201 if (ret < 0) 202 return ret; 203 204 r8a66597_bset(r8a66597, vif & LDRV, PINCFG); 205 r8a66597_bset(r8a66597, USBE, SYSCFG0); 206 207 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 208 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); 209 r8a66597_bset(r8a66597, BRDY0, BRDYENB); 210 r8a66597_bset(r8a66597, BEMP0, BEMPENB); 211 212 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); 213 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); 214 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); 215 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); 216 217 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); 218 219 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) 220 r8a66597_enable_port(r8a66597, port); 221 222 return 0; 223 } 224 225 static void disable_controller(struct r8a66597 *r8a66597) 226 { 227 int port; 228 229 r8a66597_write(r8a66597, 0, INTENB0); 230 r8a66597_write(r8a66597, 0, INTSTS0); 231 232 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) 233 r8a66597_disable_port(r8a66597, port); 234 235 r8a66597_clock_disable(r8a66597); 236 } 237 238 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, 239 struct usb_device *udev) 240 { 241 struct r8a66597_device *dev; 242 243 if (udev->parent && udev->parent->devnum != 1) 244 udev = udev->parent; 245 246 dev = dev_get_drvdata(&udev->dev); 247 if (dev) 248 return dev->address; 249 else 250 return 0; 251 } 252 253 static int is_child_device(char *devpath) 254 { 255 return (devpath[2] ? 1 : 0); 256 } 257 258 static int is_hub_limit(char *devpath) 259 { 260 return ((strlen(devpath) >= 4) ? 1 : 0); 261 } 262 263 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port) 264 { 265 if (root_port) { 266 *root_port = (devpath[0] & 0x0F) - 1; 267 if (*root_port >= R8A66597_MAX_ROOT_HUB) 268 err("illegal root port number"); 269 } 270 if (hub_port) 271 *hub_port = devpath[2] & 0x0F; 272 } 273 274 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) 275 { 276 u16 usbspd = 0; 277 278 switch (speed) { 279 case USB_SPEED_LOW: 280 usbspd = LSMODE; 281 break; 282 case USB_SPEED_FULL: 283 usbspd = FSMODE; 284 break; 285 case USB_SPEED_HIGH: 286 usbspd = HSMODE; 287 break; 288 default: 289 err("unknown speed"); 290 break; 291 } 292 293 return usbspd; 294 } 295 296 static void set_child_connect_map(struct r8a66597 *r8a66597, int address) 297 { 298 int idx; 299 300 idx = address / 32; 301 r8a66597->child_connect_map[idx] |= 1 << (address % 32); 302 } 303 304 static void put_child_connect_map(struct r8a66597 *r8a66597, int address) 305 { 306 int idx; 307 308 idx = address / 32; 309 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); 310 } 311 312 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) 313 { 314 u16 pipenum = pipe->info.pipenum; 315 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; 316 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; 317 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; 318 319 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ 320 dma_ch = R8A66597_PIPE_NO_DMA; 321 322 pipe->fifoaddr = fifoaddr[dma_ch]; 323 pipe->fifosel = fifosel[dma_ch]; 324 pipe->fifoctr = fifoctr[dma_ch]; 325 326 if (pipenum == 0) 327 pipe->pipectr = DCPCTR; 328 else 329 pipe->pipectr = get_pipectr_addr(pipenum); 330 331 if (check_bulk_or_isoc(pipenum)) { 332 pipe->pipetre = get_pipetre_addr(pipenum); 333 pipe->pipetrn = get_pipetrn_addr(pipenum); 334 } else { 335 pipe->pipetre = 0; 336 pipe->pipetrn = 0; 337 } 338 } 339 340 static struct r8a66597_device * 341 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) 342 { 343 if (usb_pipedevice(urb->pipe) == 0) 344 return &r8a66597->device0; 345 346 return dev_get_drvdata(&urb->dev->dev); 347 } 348 349 static int make_r8a66597_device(struct r8a66597 *r8a66597, 350 struct urb *urb, u8 addr) 351 { 352 struct r8a66597_device *dev; 353 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 354 355 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); 356 if (dev == NULL) 357 return -ENOMEM; 358 359 dev_set_drvdata(&urb->dev->dev, dev); 360 dev->udev = urb->dev; 361 dev->address = addr; 362 dev->usb_address = usb_address; 363 dev->state = USB_STATE_ADDRESS; 364 dev->ep_in_toggle = 0; 365 dev->ep_out_toggle = 0; 366 INIT_LIST_HEAD(&dev->device_list); 367 list_add_tail(&dev->device_list, &r8a66597->child_device); 368 369 get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port); 370 if (!is_child_device(urb->dev->devpath)) 371 r8a66597->root_hub[dev->root_port].dev = dev; 372 373 set_devadd_reg(r8a66597, dev->address, 374 get_r8a66597_usb_speed(urb->dev->speed), 375 get_parent_r8a66597_address(r8a66597, urb->dev), 376 dev->hub_port, dev->root_port); 377 378 return 0; 379 } 380 381 /* this function must be called with interrupt disabled */ 382 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) 383 { 384 u8 addr; /* R8A66597's address */ 385 struct r8a66597_device *dev; 386 387 if (is_hub_limit(urb->dev->devpath)) { 388 err("Externel hub limit reached."); 389 return 0; 390 } 391 392 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 393 if (dev && dev->state >= USB_STATE_ADDRESS) 394 return dev->address; 395 396 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { 397 if (r8a66597->address_map & (1 << addr)) 398 continue; 399 400 dbg("alloc_address: r8a66597_addr=%d", addr); 401 r8a66597->address_map |= 1 << addr; 402 403 if (make_r8a66597_device(r8a66597, urb, addr) < 0) 404 return 0; 405 406 return addr; 407 } 408 409 err("cannot communicate with a USB device more than 10.(%x)", 410 r8a66597->address_map); 411 412 return 0; 413 } 414 415 /* this function must be called with interrupt disabled */ 416 static void free_usb_address(struct r8a66597 *r8a66597, 417 struct r8a66597_device *dev) 418 { 419 int port; 420 421 if (!dev) 422 return; 423 424 dbg("free_addr: addr=%d", dev->address); 425 426 dev->state = USB_STATE_DEFAULT; 427 r8a66597->address_map &= ~(1 << dev->address); 428 dev->address = 0; 429 dev_set_drvdata(&dev->udev->dev, NULL); 430 list_del(&dev->device_list); 431 kfree(dev); 432 433 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) { 434 if (r8a66597->root_hub[port].dev == dev) { 435 r8a66597->root_hub[port].dev = NULL; 436 break; 437 } 438 } 439 } 440 441 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, 442 u16 mask, u16 loop) 443 { 444 u16 tmp; 445 int i = 0; 446 447 do { 448 tmp = r8a66597_read(r8a66597, reg); 449 if (i++ > 1000000) { 450 err("register%lx, loop %x is timeout", reg, loop); 451 break; 452 } 453 ndelay(1); 454 } while ((tmp & mask) != loop); 455 } 456 457 /* this function must be called with interrupt disabled */ 458 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 459 { 460 u16 tmp; 461 462 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 463 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ 464 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 465 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); 466 } 467 468 /* this function must be called with interrupt disabled */ 469 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 470 { 471 u16 tmp; 472 473 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 474 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ 475 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); 476 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 477 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); 478 } 479 480 /* this function must be called with interrupt disabled */ 481 static void clear_all_buffer(struct r8a66597 *r8a66597, 482 struct r8a66597_pipe *pipe) 483 { 484 u16 tmp; 485 486 if (!pipe || pipe->info.pipenum == 0) 487 return; 488 489 pipe_stop(r8a66597, pipe); 490 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 491 tmp = r8a66597_read(r8a66597, pipe->pipectr); 492 tmp = r8a66597_read(r8a66597, pipe->pipectr); 493 tmp = r8a66597_read(r8a66597, pipe->pipectr); 494 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 495 } 496 497 /* this function must be called with interrupt disabled */ 498 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 499 struct r8a66597_pipe *pipe, int toggle) 500 { 501 if (toggle) 502 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 503 else 504 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 505 } 506 507 /* this function must be called with interrupt disabled */ 508 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 509 { 510 r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL); 511 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 512 } 513 514 /* this function must be called with interrupt disabled */ 515 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 516 struct r8a66597_pipe *pipe) 517 { 518 cfifo_change(r8a66597, 0); 519 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL); 520 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL); 521 522 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE, 523 pipe->fifosel); 524 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 525 } 526 527 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 528 { 529 struct r8a66597_pipe *pipe = hep->hcpriv; 530 531 if (usb_pipeendpoint(urb->pipe) == 0) 532 return 0; 533 else 534 return pipe->info.pipenum; 535 } 536 537 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 538 { 539 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 540 541 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 542 } 543 544 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 545 int urb_pipe) 546 { 547 if (!dev) 548 return NULL; 549 550 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 551 } 552 553 /* this function must be called with interrupt disabled */ 554 static void pipe_toggle_set(struct r8a66597 *r8a66597, 555 struct r8a66597_pipe *pipe, 556 struct urb *urb, int set) 557 { 558 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 559 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 560 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 561 562 if (!toggle) 563 return; 564 565 if (set) 566 *toggle |= 1 << endpoint; 567 else 568 *toggle &= ~(1 << endpoint); 569 } 570 571 /* this function must be called with interrupt disabled */ 572 static void pipe_toggle_save(struct r8a66597 *r8a66597, 573 struct r8a66597_pipe *pipe, 574 struct urb *urb) 575 { 576 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 577 pipe_toggle_set(r8a66597, pipe, urb, 1); 578 else 579 pipe_toggle_set(r8a66597, pipe, urb, 0); 580 } 581 582 /* this function must be called with interrupt disabled */ 583 static void pipe_toggle_restore(struct r8a66597 *r8a66597, 584 struct r8a66597_pipe *pipe, 585 struct urb *urb) 586 { 587 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 588 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 589 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 590 591 if (!toggle) 592 return; 593 594 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 595 } 596 597 /* this function must be called with interrupt disabled */ 598 static void pipe_buffer_setting(struct r8a66597 *r8a66597, 599 struct r8a66597_pipe_info *info) 600 { 601 u16 val = 0; 602 603 if (info->pipenum == 0) 604 return; 605 606 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 607 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 608 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 609 if (!info->dir_in) 610 val |= R8A66597_DIR; 611 if (info->type == R8A66597_BULK && info->dir_in) 612 val |= R8A66597_DBLB | R8A66597_SHTNAK; 613 val |= info->type | info->epnum; 614 r8a66597_write(r8a66597, val, PIPECFG); 615 616 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 617 PIPEBUF); 618 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 619 PIPEMAXP); 620 r8a66597_write(r8a66597, info->interval, PIPEPERI); 621 } 622 623 /* this function must be called with interrupt disabled */ 624 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 625 { 626 struct r8a66597_pipe_info *info; 627 struct urb *urb = td->urb; 628 629 if (td->pipenum > 0) { 630 info = &td->pipe->info; 631 cfifo_change(r8a66597, 0); 632 pipe_buffer_setting(r8a66597, info); 633 634 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 635 usb_pipeout(urb->pipe)) && 636 !usb_pipecontrol(urb->pipe)) { 637 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 638 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 639 clear_all_buffer(r8a66597, td->pipe); 640 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 641 usb_pipeout(urb->pipe), 1); 642 } 643 pipe_toggle_restore(r8a66597, td->pipe, urb); 644 } 645 } 646 647 /* this function must be called with interrupt disabled */ 648 static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 649 struct usb_endpoint_descriptor *ep) 650 { 651 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 652 653 memset(array, 0, sizeof(array)); 654 switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 655 case USB_ENDPOINT_XFER_BULK: 656 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 657 array[i++] = 4; 658 else { 659 array[i++] = 3; 660 array[i++] = 5; 661 } 662 break; 663 case USB_ENDPOINT_XFER_INT: 664 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { 665 array[i++] = 6; 666 array[i++] = 7; 667 array[i++] = 8; 668 } else 669 array[i++] = 9; 670 break; 671 case USB_ENDPOINT_XFER_ISOC: 672 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 673 array[i++] = 2; 674 else 675 array[i++] = 1; 676 break; 677 default: 678 err("Illegal type"); 679 return 0; 680 } 681 682 i = 1; 683 min = array[0]; 684 while (array[i] != 0) { 685 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 686 min = array[i]; 687 i++; 688 } 689 690 return min; 691 } 692 693 static u16 get_r8a66597_type(__u8 type) 694 { 695 u16 r8a66597_type; 696 697 switch (type) { 698 case USB_ENDPOINT_XFER_BULK: 699 r8a66597_type = R8A66597_BULK; 700 break; 701 case USB_ENDPOINT_XFER_INT: 702 r8a66597_type = R8A66597_INT; 703 break; 704 case USB_ENDPOINT_XFER_ISOC: 705 r8a66597_type = R8A66597_ISO; 706 break; 707 default: 708 err("Illegal type"); 709 r8a66597_type = 0x0000; 710 break; 711 } 712 713 return r8a66597_type; 714 } 715 716 static u16 get_bufnum(u16 pipenum) 717 { 718 u16 bufnum = 0; 719 720 if (pipenum == 0) 721 bufnum = 0; 722 else if (check_bulk_or_isoc(pipenum)) 723 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 724 else if (check_interrupt(pipenum)) 725 bufnum = 4 + (pipenum - 6); 726 else 727 err("Illegal pipenum (%d)", pipenum); 728 729 return bufnum; 730 } 731 732 static u16 get_buf_bsize(u16 pipenum) 733 { 734 u16 buf_bsize = 0; 735 736 if (pipenum == 0) 737 buf_bsize = 3; 738 else if (check_bulk_or_isoc(pipenum)) 739 buf_bsize = R8A66597_BUF_BSIZE - 1; 740 else if (check_interrupt(pipenum)) 741 buf_bsize = 0; 742 else 743 err("Illegal pipenum (%d)", pipenum); 744 745 return buf_bsize; 746 } 747 748 /* this function must be called with interrupt disabled */ 749 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 750 struct r8a66597_device *dev, 751 struct r8a66597_pipe *pipe, 752 struct urb *urb) 753 { 754 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597) 755 int i; 756 struct r8a66597_pipe_info *info = &pipe->info; 757 758 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 759 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 760 if ((r8a66597->dma_map & (1 << i)) != 0) 761 continue; 762 763 info("address %d, EndpointAddress 0x%02x use DMA FIFO", 764 usb_pipedevice(urb->pipe), 765 info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum 766 : info->epnum); 767 768 r8a66597->dma_map |= 1 << i; 769 dev->dma_map |= 1 << i; 770 set_pipe_reg_addr(pipe, i); 771 772 cfifo_change(r8a66597, 0); 773 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, 774 MBW | CURPIPE, pipe->fifosel); 775 776 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 777 pipe->info.pipenum); 778 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 779 break; 780 } 781 } 782 #endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */ 783 } 784 785 /* this function must be called with interrupt disabled */ 786 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 787 struct usb_host_endpoint *hep, 788 struct r8a66597_pipe_info *info) 789 { 790 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 791 struct r8a66597_pipe *pipe = hep->hcpriv; 792 793 dbg("enable_pipe:"); 794 795 pipe->info = *info; 796 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 797 r8a66597->pipe_cnt[pipe->info.pipenum]++; 798 dev->pipe_cnt[pipe->info.pipenum]++; 799 800 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 801 } 802 803 /* this function must be called with interrupt disabled */ 804 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 805 { 806 struct r8a66597_td *td, *next; 807 struct urb *urb; 808 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 809 810 if (list_empty(list)) 811 return; 812 813 list_for_each_entry_safe(td, next, list, queue) { 814 if (!td) 815 continue; 816 if (td->address != address) 817 continue; 818 819 urb = td->urb; 820 list_del(&td->queue); 821 kfree(td); 822 823 if (urb) { 824 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), 825 urb); 826 827 spin_unlock(&r8a66597->lock); 828 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, 829 -ENODEV); 830 spin_lock(&r8a66597->lock); 831 } 832 break; 833 } 834 } 835 836 /* this function must be called with interrupt disabled */ 837 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 838 struct r8a66597_device *dev) 839 { 840 int check_ep0 = 0; 841 u16 pipenum; 842 843 if (!dev) 844 return; 845 846 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 847 if (!dev->pipe_cnt[pipenum]) 848 continue; 849 850 if (!check_ep0) { 851 check_ep0 = 1; 852 force_dequeue(r8a66597, 0, dev->address); 853 } 854 855 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 856 dev->pipe_cnt[pipenum] = 0; 857 force_dequeue(r8a66597, pipenum, dev->address); 858 } 859 860 dbg("disable_pipe"); 861 862 r8a66597->dma_map &= ~(dev->dma_map); 863 dev->dma_map = 0; 864 } 865 866 static u16 get_interval(struct urb *urb, __u8 interval) 867 { 868 u16 time = 1; 869 int i; 870 871 if (urb->dev->speed == USB_SPEED_HIGH) { 872 if (interval > IITV) 873 time = IITV; 874 else 875 time = interval ? interval - 1 : 0; 876 } else { 877 if (interval > 128) { 878 time = IITV; 879 } else { 880 /* calculate the nearest value for PIPEPERI */ 881 for (i = 0; i < 7; i++) { 882 if ((1 << i) < interval && 883 (1 << (i + 1) > interval)) 884 time = 1 << i; 885 } 886 } 887 } 888 889 return time; 890 } 891 892 static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 893 { 894 __u8 i; 895 unsigned long time = 1; 896 897 if (usb_pipeisoc(urb->pipe)) 898 return 0; 899 900 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 901 for (i = 0; i < (interval - 1); i++) 902 time *= 2; 903 time = time * 125 / 1000; /* uSOF -> msec */ 904 } else { 905 time = interval; 906 } 907 908 return time; 909 } 910 911 /* this function must be called with interrupt disabled */ 912 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 913 struct usb_host_endpoint *hep, 914 struct usb_endpoint_descriptor *ep) 915 { 916 struct r8a66597_pipe_info info; 917 918 info.pipenum = get_empty_pipenum(r8a66597, ep); 919 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 920 info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; 921 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize); 922 info.type = get_r8a66597_type(ep->bmAttributes 923 & USB_ENDPOINT_XFERTYPE_MASK); 924 info.bufnum = get_bufnum(info.pipenum); 925 info.buf_bsize = get_buf_bsize(info.pipenum); 926 if (info.type == R8A66597_BULK) { 927 info.interval = 0; 928 info.timer_interval = 0; 929 } else { 930 info.interval = get_interval(urb, ep->bInterval); 931 info.timer_interval = get_timer_interval(urb, ep->bInterval); 932 } 933 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 934 info.dir_in = 1; 935 else 936 info.dir_in = 0; 937 938 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 939 } 940 941 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 942 { 943 struct r8a66597_device *dev; 944 945 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 946 dev->state = USB_STATE_CONFIGURED; 947 } 948 949 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 950 u16 pipenum) 951 { 952 if (pipenum == 0 && usb_pipeout(urb->pipe)) 953 enable_irq_empty(r8a66597, pipenum); 954 else 955 enable_irq_ready(r8a66597, pipenum); 956 957 if (!usb_pipeisoc(urb->pipe)) 958 enable_irq_nrdy(r8a66597, pipenum); 959 } 960 961 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 962 { 963 disable_irq_ready(r8a66597, pipenum); 964 disable_irq_nrdy(r8a66597, pipenum); 965 } 966 967 /* this function must be called with interrupt disabled */ 968 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 969 u16 syssts) 970 { 971 if (syssts == SE0) { 972 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 973 return; 974 } 975 976 if (syssts == FS_JSTS) 977 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 978 else if (syssts == LS_JSTS) 979 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 980 981 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 982 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 983 } 984 985 /* this function must be called with interrupt disabled */ 986 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 987 { 988 u16 speed = get_rh_usb_speed(r8a66597, port); 989 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 990 991 if (speed == HSMODE) 992 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED); 993 else if (speed == LSMODE) 994 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED); 995 996 rh->port &= ~(1 << USB_PORT_FEAT_RESET); 997 rh->port |= 1 << USB_PORT_FEAT_ENABLE; 998 } 999 1000 /* this function must be called with interrupt disabled */ 1001 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1002 { 1003 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1004 1005 r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION); 1006 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION); 1007 1008 disable_r8a66597_pipe_all(r8a66597, dev); 1009 free_usb_address(r8a66597, dev); 1010 1011 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1012 } 1013 1014 /* this function must be called with interrupt disabled */ 1015 static void prepare_setup_packet(struct r8a66597 *r8a66597, 1016 struct r8a66597_td *td) 1017 { 1018 int i; 1019 __le16 *p = (__le16 *)td->urb->setup_packet; 1020 unsigned long setup_addr = USBREQ; 1021 1022 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1023 DCPMAXP); 1024 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1025 1026 for (i = 0; i < 4; i++) { 1027 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1028 setup_addr += 2; 1029 } 1030 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1031 } 1032 1033 /* this function must be called with interrupt disabled */ 1034 static void prepare_packet_read(struct r8a66597 *r8a66597, 1035 struct r8a66597_td *td) 1036 { 1037 struct urb *urb = td->urb; 1038 1039 if (usb_pipecontrol(urb->pipe)) { 1040 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1041 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1042 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1043 if (urb->actual_length == 0) { 1044 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1045 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1046 } 1047 pipe_irq_disable(r8a66597, td->pipenum); 1048 pipe_start(r8a66597, td->pipe); 1049 pipe_irq_enable(r8a66597, urb, td->pipenum); 1050 } else { 1051 if (urb->actual_length == 0) { 1052 pipe_irq_disable(r8a66597, td->pipenum); 1053 pipe_setting(r8a66597, td); 1054 pipe_stop(r8a66597, td->pipe); 1055 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1056 1057 if (td->pipe->pipetre) { 1058 r8a66597_write(r8a66597, TRCLR, 1059 td->pipe->pipetre); 1060 r8a66597_write(r8a66597, 1061 DIV_ROUND_UP 1062 (urb->transfer_buffer_length, 1063 td->maxpacket), 1064 td->pipe->pipetrn); 1065 r8a66597_bset(r8a66597, TRENB, 1066 td->pipe->pipetre); 1067 } 1068 1069 pipe_start(r8a66597, td->pipe); 1070 pipe_irq_enable(r8a66597, urb, td->pipenum); 1071 } 1072 } 1073 } 1074 1075 /* this function must be called with interrupt disabled */ 1076 static void prepare_packet_write(struct r8a66597 *r8a66597, 1077 struct r8a66597_td *td) 1078 { 1079 u16 tmp; 1080 struct urb *urb = td->urb; 1081 1082 if (usb_pipecontrol(urb->pipe)) { 1083 pipe_stop(r8a66597, td->pipe); 1084 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1085 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1086 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1087 if (urb->actual_length == 0) { 1088 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1089 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1090 } 1091 } else { 1092 if (urb->actual_length == 0) 1093 pipe_setting(r8a66597, td); 1094 if (td->pipe->pipetre) 1095 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1096 } 1097 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1098 1099 fifo_change_from_pipe(r8a66597, td->pipe); 1100 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1101 if (unlikely((tmp & FRDY) == 0)) 1102 pipe_irq_enable(r8a66597, urb, td->pipenum); 1103 else 1104 packet_write(r8a66597, td->pipenum); 1105 pipe_start(r8a66597, td->pipe); 1106 } 1107 1108 /* this function must be called with interrupt disabled */ 1109 static void prepare_status_packet(struct r8a66597 *r8a66597, 1110 struct r8a66597_td *td) 1111 { 1112 struct urb *urb = td->urb; 1113 1114 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1115 pipe_stop(r8a66597, td->pipe); 1116 1117 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1118 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1119 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1120 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1121 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1122 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1123 enable_irq_empty(r8a66597, 0); 1124 } else { 1125 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1126 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1127 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1128 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1129 enable_irq_ready(r8a66597, 0); 1130 } 1131 enable_irq_nrdy(r8a66597, 0); 1132 pipe_start(r8a66597, td->pipe); 1133 } 1134 1135 static int is_set_address(unsigned char *setup_packet) 1136 { 1137 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1138 setup_packet[1] == USB_REQ_SET_ADDRESS) 1139 return 1; 1140 else 1141 return 0; 1142 } 1143 1144 /* this function must be called with interrupt disabled */ 1145 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1146 { 1147 BUG_ON(!td); 1148 1149 switch (td->type) { 1150 case USB_PID_SETUP: 1151 if (is_set_address(td->urb->setup_packet)) { 1152 td->set_address = 1; 1153 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1154 td->urb); 1155 if (td->urb->setup_packet[2] == 0) 1156 return -EPIPE; 1157 } 1158 prepare_setup_packet(r8a66597, td); 1159 break; 1160 case USB_PID_IN: 1161 prepare_packet_read(r8a66597, td); 1162 break; 1163 case USB_PID_OUT: 1164 prepare_packet_write(r8a66597, td); 1165 break; 1166 case USB_PID_ACK: 1167 prepare_status_packet(r8a66597, td); 1168 break; 1169 default: 1170 err("invalid type."); 1171 break; 1172 } 1173 1174 return 0; 1175 } 1176 1177 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1178 { 1179 if (usb_pipeisoc(urb->pipe)) { 1180 if (urb->number_of_packets == td->iso_cnt) 1181 return 1; 1182 } 1183 1184 /* control or bulk or interrupt */ 1185 if ((urb->transfer_buffer_length <= urb->actual_length) || 1186 (td->short_packet) || (td->zero_packet)) 1187 return 1; 1188 1189 return 0; 1190 } 1191 1192 /* this function must be called with interrupt disabled */ 1193 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1194 { 1195 unsigned long time; 1196 1197 BUG_ON(!td); 1198 1199 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1200 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1201 r8a66597->timeout_map |= 1 << td->pipenum; 1202 switch (usb_pipetype(td->urb->pipe)) { 1203 case PIPE_INTERRUPT: 1204 case PIPE_ISOCHRONOUS: 1205 time = 30; 1206 break; 1207 default: 1208 time = 300; 1209 break; 1210 } 1211 1212 mod_timer(&r8a66597->td_timer[td->pipenum], 1213 jiffies + msecs_to_jiffies(time)); 1214 } 1215 } 1216 1217 /* this function must be called with interrupt disabled */ 1218 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1219 u16 pipenum, struct urb *urb, int status) 1220 __releases(r8a66597->lock) __acquires(r8a66597->lock) 1221 { 1222 int restart = 0; 1223 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1224 1225 r8a66597->timeout_map &= ~(1 << pipenum); 1226 1227 if (likely(td)) { 1228 if (td->set_address && (status != 0 || urb->unlinked)) 1229 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1230 1231 pipe_toggle_save(r8a66597, td->pipe, urb); 1232 list_del(&td->queue); 1233 kfree(td); 1234 } 1235 1236 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1237 restart = 1; 1238 1239 if (likely(urb)) { 1240 if (usb_pipeisoc(urb->pipe)) 1241 urb->start_frame = r8a66597_get_frame(hcd); 1242 1243 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 1244 spin_unlock(&r8a66597->lock); 1245 usb_hcd_giveback_urb(hcd, urb, status); 1246 spin_lock(&r8a66597->lock); 1247 } 1248 1249 if (restart) { 1250 td = r8a66597_get_td(r8a66597, pipenum); 1251 if (unlikely(!td)) 1252 return; 1253 1254 start_transfer(r8a66597, td); 1255 set_td_timer(r8a66597, td); 1256 } 1257 } 1258 1259 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1260 { 1261 u16 tmp; 1262 int rcv_len, bufsize, urb_len, size; 1263 u16 *buf; 1264 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1265 struct urb *urb; 1266 int finish = 0; 1267 int status = 0; 1268 1269 if (unlikely(!td)) 1270 return; 1271 urb = td->urb; 1272 1273 fifo_change_from_pipe(r8a66597, td->pipe); 1274 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1275 if (unlikely((tmp & FRDY) == 0)) { 1276 pipe_stop(r8a66597, td->pipe); 1277 pipe_irq_disable(r8a66597, pipenum); 1278 err("in fifo not ready (%d)", pipenum); 1279 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1280 return; 1281 } 1282 1283 /* prepare parameters */ 1284 rcv_len = tmp & DTLN; 1285 if (usb_pipeisoc(urb->pipe)) { 1286 buf = (u16 *)(urb->transfer_buffer + 1287 urb->iso_frame_desc[td->iso_cnt].offset); 1288 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1289 } else { 1290 buf = (void *)urb->transfer_buffer + urb->actual_length; 1291 urb_len = urb->transfer_buffer_length - urb->actual_length; 1292 } 1293 bufsize = min(urb_len, (int) td->maxpacket); 1294 if (rcv_len <= bufsize) { 1295 size = rcv_len; 1296 } else { 1297 size = bufsize; 1298 status = -EOVERFLOW; 1299 finish = 1; 1300 } 1301 1302 /* update parameters */ 1303 urb->actual_length += size; 1304 if (rcv_len == 0) 1305 td->zero_packet = 1; 1306 if (rcv_len < bufsize) { 1307 td->short_packet = 1; 1308 } 1309 if (usb_pipeisoc(urb->pipe)) { 1310 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1311 urb->iso_frame_desc[td->iso_cnt].status = status; 1312 td->iso_cnt++; 1313 finish = 0; 1314 } 1315 1316 /* check transfer finish */ 1317 if (finish || check_transfer_finish(td, urb)) { 1318 pipe_stop(r8a66597, td->pipe); 1319 pipe_irq_disable(r8a66597, pipenum); 1320 finish = 1; 1321 } 1322 1323 /* read fifo */ 1324 if (urb->transfer_buffer) { 1325 if (size == 0) 1326 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1327 else 1328 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1329 buf, size); 1330 } 1331 1332 if (finish && pipenum != 0) 1333 finish_request(r8a66597, td, pipenum, urb, status); 1334 } 1335 1336 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1337 { 1338 u16 tmp; 1339 int bufsize, size; 1340 u16 *buf; 1341 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1342 struct urb *urb; 1343 1344 if (unlikely(!td)) 1345 return; 1346 urb = td->urb; 1347 1348 fifo_change_from_pipe(r8a66597, td->pipe); 1349 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1350 if (unlikely((tmp & FRDY) == 0)) { 1351 pipe_stop(r8a66597, td->pipe); 1352 pipe_irq_disable(r8a66597, pipenum); 1353 err("out write fifo not ready. (%d)", pipenum); 1354 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1355 return; 1356 } 1357 1358 /* prepare parameters */ 1359 bufsize = td->maxpacket; 1360 if (usb_pipeisoc(urb->pipe)) { 1361 buf = (u16 *)(urb->transfer_buffer + 1362 urb->iso_frame_desc[td->iso_cnt].offset); 1363 size = min(bufsize, 1364 (int)urb->iso_frame_desc[td->iso_cnt].length); 1365 } else { 1366 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1367 size = min((int)bufsize, 1368 urb->transfer_buffer_length - urb->actual_length); 1369 } 1370 1371 /* write fifo */ 1372 if (pipenum > 0) 1373 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1374 if (urb->transfer_buffer) { 1375 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size); 1376 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1377 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1378 } 1379 1380 /* update parameters */ 1381 urb->actual_length += size; 1382 if (usb_pipeisoc(urb->pipe)) { 1383 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1384 urb->iso_frame_desc[td->iso_cnt].status = 0; 1385 td->iso_cnt++; 1386 } 1387 1388 /* check transfer finish */ 1389 if (check_transfer_finish(td, urb)) { 1390 disable_irq_ready(r8a66597, pipenum); 1391 enable_irq_empty(r8a66597, pipenum); 1392 if (!usb_pipeisoc(urb->pipe)) 1393 enable_irq_nrdy(r8a66597, pipenum); 1394 } else 1395 pipe_irq_enable(r8a66597, urb, pipenum); 1396 } 1397 1398 1399 static void check_next_phase(struct r8a66597 *r8a66597, int status) 1400 { 1401 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1402 struct urb *urb; 1403 u8 finish = 0; 1404 1405 if (unlikely(!td)) 1406 return; 1407 urb = td->urb; 1408 1409 switch (td->type) { 1410 case USB_PID_IN: 1411 case USB_PID_OUT: 1412 if (check_transfer_finish(td, urb)) 1413 td->type = USB_PID_ACK; 1414 break; 1415 case USB_PID_SETUP: 1416 if (urb->transfer_buffer_length == urb->actual_length) 1417 td->type = USB_PID_ACK; 1418 else if (usb_pipeout(urb->pipe)) 1419 td->type = USB_PID_OUT; 1420 else 1421 td->type = USB_PID_IN; 1422 break; 1423 case USB_PID_ACK: 1424 finish = 1; 1425 break; 1426 } 1427 1428 if (finish || status != 0 || urb->unlinked) 1429 finish_request(r8a66597, td, 0, urb, status); 1430 else 1431 start_transfer(r8a66597, td); 1432 } 1433 1434 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1435 { 1436 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1437 1438 if (td) { 1439 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1440 1441 if (pid == PID_NAK) 1442 return -ECONNRESET; 1443 else 1444 return -EPIPE; 1445 } 1446 return 0; 1447 } 1448 1449 static void irq_pipe_ready(struct r8a66597 *r8a66597) 1450 { 1451 u16 check; 1452 u16 pipenum; 1453 u16 mask; 1454 struct r8a66597_td *td; 1455 1456 mask = r8a66597_read(r8a66597, BRDYSTS) 1457 & r8a66597_read(r8a66597, BRDYENB); 1458 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1459 if (mask & BRDY0) { 1460 td = r8a66597_get_td(r8a66597, 0); 1461 if (td && td->type == USB_PID_IN) 1462 packet_read(r8a66597, 0); 1463 else 1464 pipe_irq_disable(r8a66597, 0); 1465 check_next_phase(r8a66597, 0); 1466 } 1467 1468 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1469 check = 1 << pipenum; 1470 if (mask & check) { 1471 td = r8a66597_get_td(r8a66597, pipenum); 1472 if (unlikely(!td)) 1473 continue; 1474 1475 if (td->type == USB_PID_IN) 1476 packet_read(r8a66597, pipenum); 1477 else if (td->type == USB_PID_OUT) 1478 packet_write(r8a66597, pipenum); 1479 } 1480 } 1481 } 1482 1483 static void irq_pipe_empty(struct r8a66597 *r8a66597) 1484 { 1485 u16 tmp; 1486 u16 check; 1487 u16 pipenum; 1488 u16 mask; 1489 struct r8a66597_td *td; 1490 1491 mask = r8a66597_read(r8a66597, BEMPSTS) 1492 & r8a66597_read(r8a66597, BEMPENB); 1493 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1494 if (mask & BEMP0) { 1495 cfifo_change(r8a66597, 0); 1496 td = r8a66597_get_td(r8a66597, 0); 1497 if (td && td->type != USB_PID_OUT) 1498 disable_irq_empty(r8a66597, 0); 1499 check_next_phase(r8a66597, 0); 1500 } 1501 1502 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1503 check = 1 << pipenum; 1504 if (mask & check) { 1505 struct r8a66597_td *td; 1506 td = r8a66597_get_td(r8a66597, pipenum); 1507 if (unlikely(!td)) 1508 continue; 1509 1510 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1511 if ((tmp & INBUFM) == 0) { 1512 disable_irq_empty(r8a66597, pipenum); 1513 pipe_irq_disable(r8a66597, pipenum); 1514 finish_request(r8a66597, td, pipenum, td->urb, 1515 0); 1516 } 1517 } 1518 } 1519 } 1520 1521 static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1522 { 1523 u16 check; 1524 u16 pipenum; 1525 u16 mask; 1526 int status; 1527 1528 mask = r8a66597_read(r8a66597, NRDYSTS) 1529 & r8a66597_read(r8a66597, NRDYENB); 1530 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1531 if (mask & NRDY0) { 1532 cfifo_change(r8a66597, 0); 1533 status = get_urb_error(r8a66597, 0); 1534 pipe_irq_disable(r8a66597, 0); 1535 check_next_phase(r8a66597, status); 1536 } 1537 1538 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1539 check = 1 << pipenum; 1540 if (mask & check) { 1541 struct r8a66597_td *td; 1542 td = r8a66597_get_td(r8a66597, pipenum); 1543 if (unlikely(!td)) 1544 continue; 1545 1546 status = get_urb_error(r8a66597, pipenum); 1547 pipe_irq_disable(r8a66597, pipenum); 1548 pipe_stop(r8a66597, td->pipe); 1549 finish_request(r8a66597, td, pipenum, td->urb, status); 1550 } 1551 } 1552 } 1553 1554 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 1555 { 1556 mod_timer(&r8a66597->rh_timer, 1557 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 1558 } 1559 1560 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port) 1561 { 1562 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1563 1564 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1565 rh->scount = R8A66597_MAX_SAMPLING; 1566 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION) 1567 | (1 << USB_PORT_FEAT_C_CONNECTION); 1568 r8a66597_root_hub_start_polling(r8a66597); 1569 } 1570 1571 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1572 { 1573 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1574 u16 intsts0, intsts1, intsts2; 1575 u16 intenb0, intenb1, intenb2; 1576 u16 mask0, mask1, mask2; 1577 int status; 1578 1579 spin_lock(&r8a66597->lock); 1580 1581 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1582 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1583 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1584 intenb0 = r8a66597_read(r8a66597, INTENB0); 1585 intenb1 = r8a66597_read(r8a66597, INTENB1); 1586 intenb2 = r8a66597_read(r8a66597, INTENB2); 1587 1588 mask2 = intsts2 & intenb2; 1589 mask1 = intsts1 & intenb1; 1590 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1591 if (mask2) { 1592 if (mask2 & ATTCH) { 1593 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1594 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1595 1596 /* start usb bus sampling */ 1597 start_root_hub_sampling(r8a66597, 1); 1598 } 1599 if (mask2 & DTCH) { 1600 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1601 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1602 r8a66597_usb_disconnect(r8a66597, 1); 1603 } 1604 } 1605 1606 if (mask1) { 1607 if (mask1 & ATTCH) { 1608 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1609 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1610 1611 /* start usb bus sampling */ 1612 start_root_hub_sampling(r8a66597, 0); 1613 } 1614 if (mask1 & DTCH) { 1615 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1616 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1617 r8a66597_usb_disconnect(r8a66597, 0); 1618 } 1619 if (mask1 & SIGN) { 1620 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1621 status = get_urb_error(r8a66597, 0); 1622 check_next_phase(r8a66597, status); 1623 } 1624 if (mask1 & SACK) { 1625 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1626 check_next_phase(r8a66597, 0); 1627 } 1628 } 1629 if (mask0) { 1630 if (mask0 & BRDY) 1631 irq_pipe_ready(r8a66597); 1632 if (mask0 & BEMP) 1633 irq_pipe_empty(r8a66597); 1634 if (mask0 & NRDY) 1635 irq_pipe_nrdy(r8a66597); 1636 } 1637 1638 spin_unlock(&r8a66597->lock); 1639 return IRQ_HANDLED; 1640 } 1641 1642 /* this function must be called with interrupt disabled */ 1643 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1644 { 1645 u16 tmp; 1646 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1647 1648 if (rh->port & (1 << USB_PORT_FEAT_RESET)) { 1649 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1650 1651 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1652 if ((tmp & USBRST) == USBRST) { 1653 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1654 dvstctr_reg); 1655 r8a66597_root_hub_start_polling(r8a66597); 1656 } else 1657 r8a66597_usb_connect(r8a66597, port); 1658 } 1659 1660 if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) { 1661 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1662 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1663 } 1664 1665 if (rh->scount > 0) { 1666 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1667 if (tmp == rh->old_syssts) { 1668 rh->scount--; 1669 if (rh->scount == 0) 1670 r8a66597_check_syssts(r8a66597, port, tmp); 1671 else 1672 r8a66597_root_hub_start_polling(r8a66597); 1673 } else { 1674 rh->scount = R8A66597_MAX_SAMPLING; 1675 rh->old_syssts = tmp; 1676 r8a66597_root_hub_start_polling(r8a66597); 1677 } 1678 } 1679 } 1680 1681 static void r8a66597_interval_timer(unsigned long _r8a66597) 1682 { 1683 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1684 unsigned long flags; 1685 u16 pipenum; 1686 struct r8a66597_td *td; 1687 1688 spin_lock_irqsave(&r8a66597->lock, flags); 1689 1690 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1691 if (!(r8a66597->interval_map & (1 << pipenum))) 1692 continue; 1693 if (timer_pending(&r8a66597->interval_timer[pipenum])) 1694 continue; 1695 1696 td = r8a66597_get_td(r8a66597, pipenum); 1697 if (td) 1698 start_transfer(r8a66597, td); 1699 } 1700 1701 spin_unlock_irqrestore(&r8a66597->lock, flags); 1702 } 1703 1704 static void r8a66597_td_timer(unsigned long _r8a66597) 1705 { 1706 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1707 unsigned long flags; 1708 u16 pipenum; 1709 struct r8a66597_td *td, *new_td = NULL; 1710 struct r8a66597_pipe *pipe; 1711 1712 spin_lock_irqsave(&r8a66597->lock, flags); 1713 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1714 if (!(r8a66597->timeout_map & (1 << pipenum))) 1715 continue; 1716 if (timer_pending(&r8a66597->td_timer[pipenum])) 1717 continue; 1718 1719 td = r8a66597_get_td(r8a66597, pipenum); 1720 if (!td) { 1721 r8a66597->timeout_map &= ~(1 << pipenum); 1722 continue; 1723 } 1724 1725 if (td->urb->actual_length) { 1726 set_td_timer(r8a66597, td); 1727 break; 1728 } 1729 1730 pipe = td->pipe; 1731 pipe_stop(r8a66597, pipe); 1732 1733 new_td = td; 1734 do { 1735 list_move_tail(&new_td->queue, 1736 &r8a66597->pipe_queue[pipenum]); 1737 new_td = r8a66597_get_td(r8a66597, pipenum); 1738 if (!new_td) { 1739 new_td = td; 1740 break; 1741 } 1742 } while (td != new_td && td->address == new_td->address); 1743 1744 start_transfer(r8a66597, new_td); 1745 1746 if (td == new_td) 1747 r8a66597->timeout_map &= ~(1 << pipenum); 1748 else 1749 set_td_timer(r8a66597, new_td); 1750 break; 1751 } 1752 spin_unlock_irqrestore(&r8a66597->lock, flags); 1753 } 1754 1755 static void r8a66597_timer(unsigned long _r8a66597) 1756 { 1757 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1758 unsigned long flags; 1759 1760 spin_lock_irqsave(&r8a66597->lock, flags); 1761 1762 r8a66597_root_hub_control(r8a66597, 0); 1763 r8a66597_root_hub_control(r8a66597, 1); 1764 1765 spin_unlock_irqrestore(&r8a66597->lock, flags); 1766 } 1767 1768 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1769 { 1770 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1771 1772 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1773 (urb->dev->state == USB_STATE_CONFIGURED)) 1774 return 1; 1775 else 1776 return 0; 1777 } 1778 1779 static int r8a66597_start(struct usb_hcd *hcd) 1780 { 1781 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1782 1783 hcd->state = HC_STATE_RUNNING; 1784 return enable_controller(r8a66597); 1785 } 1786 1787 static void r8a66597_stop(struct usb_hcd *hcd) 1788 { 1789 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1790 1791 disable_controller(r8a66597); 1792 } 1793 1794 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1795 { 1796 unsigned int usb_address = usb_pipedevice(urb->pipe); 1797 u16 root_port, hub_port; 1798 1799 if (usb_address == 0) { 1800 get_port_number(urb->dev->devpath, 1801 &root_port, &hub_port); 1802 set_devadd_reg(r8a66597, 0, 1803 get_r8a66597_usb_speed(urb->dev->speed), 1804 get_parent_r8a66597_address(r8a66597, urb->dev), 1805 hub_port, root_port); 1806 } 1807 } 1808 1809 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1810 struct urb *urb, 1811 struct usb_host_endpoint *hep) 1812 { 1813 struct r8a66597_td *td; 1814 u16 pipenum; 1815 1816 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1817 if (td == NULL) 1818 return NULL; 1819 1820 pipenum = r8a66597_get_pipenum(urb, hep); 1821 td->pipenum = pipenum; 1822 td->pipe = hep->hcpriv; 1823 td->urb = urb; 1824 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1825 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1826 !usb_pipein(urb->pipe)); 1827 if (usb_pipecontrol(urb->pipe)) 1828 td->type = USB_PID_SETUP; 1829 else if (usb_pipein(urb->pipe)) 1830 td->type = USB_PID_IN; 1831 else 1832 td->type = USB_PID_OUT; 1833 INIT_LIST_HEAD(&td->queue); 1834 1835 return td; 1836 } 1837 1838 static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1839 struct urb *urb, 1840 gfp_t mem_flags) 1841 { 1842 struct usb_host_endpoint *hep = urb->ep; 1843 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1844 struct r8a66597_td *td = NULL; 1845 int ret, request = 0; 1846 unsigned long flags; 1847 1848 spin_lock_irqsave(&r8a66597->lock, flags); 1849 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1850 ret = -ENODEV; 1851 goto error_not_linked; 1852 } 1853 1854 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1855 if (ret) 1856 goto error_not_linked; 1857 1858 if (!hep->hcpriv) { 1859 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1860 GFP_ATOMIC); 1861 if (!hep->hcpriv) { 1862 ret = -ENOMEM; 1863 goto error; 1864 } 1865 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1866 if (usb_pipeendpoint(urb->pipe)) 1867 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1868 } 1869 1870 if (unlikely(check_pipe_config(r8a66597, urb))) 1871 init_pipe_config(r8a66597, urb); 1872 1873 set_address_zero(r8a66597, urb); 1874 td = r8a66597_make_td(r8a66597, urb, hep); 1875 if (td == NULL) { 1876 ret = -ENOMEM; 1877 goto error; 1878 } 1879 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1880 request = 1; 1881 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1882 urb->hcpriv = td; 1883 1884 if (request) { 1885 if (td->pipe->info.timer_interval) { 1886 r8a66597->interval_map |= 1 << td->pipenum; 1887 mod_timer(&r8a66597->interval_timer[td->pipenum], 1888 jiffies + msecs_to_jiffies( 1889 td->pipe->info.timer_interval)); 1890 } else { 1891 ret = start_transfer(r8a66597, td); 1892 if (ret < 0) { 1893 list_del(&td->queue); 1894 kfree(td); 1895 } 1896 } 1897 } else 1898 set_td_timer(r8a66597, td); 1899 1900 error: 1901 if (ret) 1902 usb_hcd_unlink_urb_from_ep(hcd, urb); 1903 error_not_linked: 1904 spin_unlock_irqrestore(&r8a66597->lock, flags); 1905 return ret; 1906 } 1907 1908 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1909 int status) 1910 { 1911 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1912 struct r8a66597_td *td; 1913 unsigned long flags; 1914 int rc; 1915 1916 spin_lock_irqsave(&r8a66597->lock, flags); 1917 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1918 if (rc) 1919 goto done; 1920 1921 if (urb->hcpriv) { 1922 td = urb->hcpriv; 1923 pipe_stop(r8a66597, td->pipe); 1924 pipe_irq_disable(r8a66597, td->pipenum); 1925 disable_irq_empty(r8a66597, td->pipenum); 1926 finish_request(r8a66597, td, td->pipenum, urb, status); 1927 } 1928 done: 1929 spin_unlock_irqrestore(&r8a66597->lock, flags); 1930 return rc; 1931 } 1932 1933 static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1934 struct usb_host_endpoint *hep) 1935 { 1936 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1937 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1938 struct r8a66597_td *td; 1939 struct urb *urb = NULL; 1940 u16 pipenum; 1941 unsigned long flags; 1942 1943 if (pipe == NULL) 1944 return; 1945 pipenum = pipe->info.pipenum; 1946 1947 if (pipenum == 0) { 1948 kfree(hep->hcpriv); 1949 hep->hcpriv = NULL; 1950 return; 1951 } 1952 1953 spin_lock_irqsave(&r8a66597->lock, flags); 1954 pipe_stop(r8a66597, pipe); 1955 pipe_irq_disable(r8a66597, pipenum); 1956 disable_irq_empty(r8a66597, pipenum); 1957 td = r8a66597_get_td(r8a66597, pipenum); 1958 if (td) 1959 urb = td->urb; 1960 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 1961 kfree(hep->hcpriv); 1962 hep->hcpriv = NULL; 1963 spin_unlock_irqrestore(&r8a66597->lock, flags); 1964 } 1965 1966 static int r8a66597_get_frame(struct usb_hcd *hcd) 1967 { 1968 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1969 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 1970 } 1971 1972 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 1973 { 1974 int chix; 1975 1976 if (udev->state == USB_STATE_CONFIGURED && 1977 udev->parent && udev->parent->devnum > 1 && 1978 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 1979 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 1980 1981 for (chix = 0; chix < udev->maxchild; chix++) { 1982 struct usb_device *childdev = udev->children[chix]; 1983 1984 if (childdev) 1985 collect_usb_address_map(childdev, map); 1986 } 1987 } 1988 1989 /* this function must be called with interrupt disabled */ 1990 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 1991 int addr) 1992 { 1993 struct r8a66597_device *dev; 1994 struct list_head *list = &r8a66597->child_device; 1995 1996 list_for_each_entry(dev, list, device_list) { 1997 if (!dev) 1998 continue; 1999 if (dev->usb_address != addr) 2000 continue; 2001 2002 return dev; 2003 } 2004 2005 err("get_r8a66597_device fail.(%d)\n", addr); 2006 return NULL; 2007 } 2008 2009 static void update_usb_address_map(struct r8a66597 *r8a66597, 2010 struct usb_device *root_hub, 2011 unsigned long *map) 2012 { 2013 int i, j, addr; 2014 unsigned long diff; 2015 unsigned long flags; 2016 2017 for (i = 0; i < 4; i++) { 2018 diff = r8a66597->child_connect_map[i] ^ map[i]; 2019 if (!diff) 2020 continue; 2021 2022 for (j = 0; j < 32; j++) { 2023 if (!(diff & (1 << j))) 2024 continue; 2025 2026 addr = i * 32 + j; 2027 if (map[i] & (1 << j)) 2028 set_child_connect_map(r8a66597, addr); 2029 else { 2030 struct r8a66597_device *dev; 2031 2032 spin_lock_irqsave(&r8a66597->lock, flags); 2033 dev = get_r8a66597_device(r8a66597, addr); 2034 disable_r8a66597_pipe_all(r8a66597, dev); 2035 free_usb_address(r8a66597, dev); 2036 put_child_connect_map(r8a66597, addr); 2037 spin_unlock_irqrestore(&r8a66597->lock, flags); 2038 } 2039 } 2040 } 2041 } 2042 2043 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2044 struct usb_hcd *hcd) 2045 { 2046 struct usb_bus *bus; 2047 unsigned long now_map[4]; 2048 2049 memset(now_map, 0, sizeof(now_map)); 2050 2051 list_for_each_entry(bus, &usb_bus_list, bus_list) { 2052 if (!bus->root_hub) 2053 continue; 2054 2055 if (bus->busnum != hcd->self.busnum) 2056 continue; 2057 2058 collect_usb_address_map(bus->root_hub, now_map); 2059 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2060 } 2061 } 2062 2063 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2064 { 2065 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2066 unsigned long flags; 2067 int i; 2068 2069 r8a66597_check_detect_child(r8a66597, hcd); 2070 2071 spin_lock_irqsave(&r8a66597->lock, flags); 2072 2073 *buf = 0; /* initialize (no change) */ 2074 2075 for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) { 2076 if (r8a66597->root_hub[i].port & 0xffff0000) 2077 *buf |= 1 << (i + 1); 2078 } 2079 2080 spin_unlock_irqrestore(&r8a66597->lock, flags); 2081 2082 return (*buf != 0); 2083 } 2084 2085 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2086 struct usb_hub_descriptor *desc) 2087 { 2088 desc->bDescriptorType = 0x29; 2089 desc->bHubContrCurrent = 0; 2090 desc->bNbrPorts = R8A66597_MAX_ROOT_HUB; 2091 desc->bDescLength = 9; 2092 desc->bPwrOn2PwrGood = 0; 2093 desc->wHubCharacteristics = cpu_to_le16(0x0011); 2094 desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1; 2095 desc->bitmap[1] = ~0; 2096 } 2097 2098 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 2099 u16 wIndex, char *buf, u16 wLength) 2100 { 2101 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2102 int ret; 2103 int port = (wIndex & 0x00FF) - 1; 2104 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2105 unsigned long flags; 2106 2107 ret = 0; 2108 2109 spin_lock_irqsave(&r8a66597->lock, flags); 2110 switch (typeReq) { 2111 case ClearHubFeature: 2112 case SetHubFeature: 2113 switch (wValue) { 2114 case C_HUB_OVER_CURRENT: 2115 case C_HUB_LOCAL_POWER: 2116 break; 2117 default: 2118 goto error; 2119 } 2120 break; 2121 case ClearPortFeature: 2122 if (wIndex > R8A66597_MAX_ROOT_HUB) 2123 goto error; 2124 if (wLength != 0) 2125 goto error; 2126 2127 switch (wValue) { 2128 case USB_PORT_FEAT_ENABLE: 2129 rh->port &= (1 << USB_PORT_FEAT_POWER); 2130 break; 2131 case USB_PORT_FEAT_SUSPEND: 2132 break; 2133 case USB_PORT_FEAT_POWER: 2134 r8a66597_port_power(r8a66597, port, 0); 2135 break; 2136 case USB_PORT_FEAT_C_ENABLE: 2137 case USB_PORT_FEAT_C_SUSPEND: 2138 case USB_PORT_FEAT_C_CONNECTION: 2139 case USB_PORT_FEAT_C_OVER_CURRENT: 2140 case USB_PORT_FEAT_C_RESET: 2141 break; 2142 default: 2143 goto error; 2144 } 2145 rh->port &= ~(1 << wValue); 2146 break; 2147 case GetHubDescriptor: 2148 r8a66597_hub_descriptor(r8a66597, 2149 (struct usb_hub_descriptor *)buf); 2150 break; 2151 case GetHubStatus: 2152 *buf = 0x00; 2153 break; 2154 case GetPortStatus: 2155 if (wIndex > R8A66597_MAX_ROOT_HUB) 2156 goto error; 2157 *(__le32 *)buf = cpu_to_le32(rh->port); 2158 break; 2159 case SetPortFeature: 2160 if (wIndex > R8A66597_MAX_ROOT_HUB) 2161 goto error; 2162 if (wLength != 0) 2163 goto error; 2164 2165 switch (wValue) { 2166 case USB_PORT_FEAT_SUSPEND: 2167 break; 2168 case USB_PORT_FEAT_POWER: 2169 r8a66597_port_power(r8a66597, port, 1); 2170 rh->port |= (1 << USB_PORT_FEAT_POWER); 2171 break; 2172 case USB_PORT_FEAT_RESET: { 2173 struct r8a66597_device *dev = rh->dev; 2174 2175 rh->port |= (1 << USB_PORT_FEAT_RESET); 2176 2177 disable_r8a66597_pipe_all(r8a66597, dev); 2178 free_usb_address(r8a66597, dev); 2179 2180 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2181 get_dvstctr_reg(port)); 2182 mod_timer(&r8a66597->rh_timer, 2183 jiffies + msecs_to_jiffies(50)); 2184 } 2185 break; 2186 default: 2187 goto error; 2188 } 2189 rh->port |= 1 << wValue; 2190 break; 2191 default: 2192 error: 2193 ret = -EPIPE; 2194 break; 2195 } 2196 2197 spin_unlock_irqrestore(&r8a66597->lock, flags); 2198 return ret; 2199 } 2200 2201 static struct hc_driver r8a66597_hc_driver = { 2202 .description = hcd_name, 2203 .hcd_priv_size = sizeof(struct r8a66597), 2204 .irq = r8a66597_irq, 2205 2206 /* 2207 * generic hardware linkage 2208 */ 2209 .flags = HCD_USB2, 2210 2211 .start = r8a66597_start, 2212 .stop = r8a66597_stop, 2213 2214 /* 2215 * managing i/o requests and associated device resources 2216 */ 2217 .urb_enqueue = r8a66597_urb_enqueue, 2218 .urb_dequeue = r8a66597_urb_dequeue, 2219 .endpoint_disable = r8a66597_endpoint_disable, 2220 2221 /* 2222 * periodic schedule support 2223 */ 2224 .get_frame_number = r8a66597_get_frame, 2225 2226 /* 2227 * root hub support 2228 */ 2229 .hub_status_data = r8a66597_hub_status_data, 2230 .hub_control = r8a66597_hub_control, 2231 }; 2232 2233 #if defined(CONFIG_PM) 2234 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state) 2235 { 2236 return 0; 2237 } 2238 2239 static int r8a66597_resume(struct platform_device *pdev) 2240 { 2241 return 0; 2242 } 2243 #else /* if defined(CONFIG_PM) */ 2244 #define r8a66597_suspend NULL 2245 #define r8a66597_resume NULL 2246 #endif 2247 2248 static int __init_or_module r8a66597_remove(struct platform_device *pdev) 2249 { 2250 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); 2251 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2252 2253 del_timer_sync(&r8a66597->rh_timer); 2254 usb_remove_hcd(hcd); 2255 iounmap((void *)r8a66597->reg); 2256 usb_put_hcd(hcd); 2257 return 0; 2258 } 2259 2260 #define resource_len(r) (((r)->end - (r)->start) + 1) 2261 static int __init r8a66597_probe(struct platform_device *pdev) 2262 { 2263 struct resource *res = NULL; 2264 int irq = -1; 2265 void __iomem *reg = NULL; 2266 struct usb_hcd *hcd = NULL; 2267 struct r8a66597 *r8a66597; 2268 int ret = 0; 2269 int i; 2270 unsigned long irq_trigger; 2271 2272 if (pdev->dev.dma_mask) { 2273 ret = -EINVAL; 2274 err("dma not support"); 2275 goto clean_up; 2276 } 2277 2278 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, 2279 (char *)hcd_name); 2280 if (!res) { 2281 ret = -ENODEV; 2282 err("platform_get_resource_byname error."); 2283 goto clean_up; 2284 } 2285 2286 irq = platform_get_irq(pdev, 0); 2287 if (irq < 0) { 2288 ret = -ENODEV; 2289 err("platform_get_irq error."); 2290 goto clean_up; 2291 } 2292 2293 reg = ioremap(res->start, resource_len(res)); 2294 if (reg == NULL) { 2295 ret = -ENOMEM; 2296 err("ioremap error."); 2297 goto clean_up; 2298 } 2299 2300 /* initialize hcd */ 2301 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2302 if (!hcd) { 2303 ret = -ENOMEM; 2304 err("Failed to create hcd"); 2305 goto clean_up; 2306 } 2307 r8a66597 = hcd_to_r8a66597(hcd); 2308 memset(r8a66597, 0, sizeof(struct r8a66597)); 2309 dev_set_drvdata(&pdev->dev, r8a66597); 2310 2311 spin_lock_init(&r8a66597->lock); 2312 init_timer(&r8a66597->rh_timer); 2313 r8a66597->rh_timer.function = r8a66597_timer; 2314 r8a66597->rh_timer.data = (unsigned long)r8a66597; 2315 r8a66597->reg = (unsigned long)reg; 2316 2317 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2318 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2319 init_timer(&r8a66597->td_timer[i]); 2320 r8a66597->td_timer[i].function = r8a66597_td_timer; 2321 r8a66597->td_timer[i].data = (unsigned long)r8a66597; 2322 setup_timer(&r8a66597->interval_timer[i], 2323 r8a66597_interval_timer, 2324 (unsigned long)r8a66597); 2325 } 2326 INIT_LIST_HEAD(&r8a66597->child_device); 2327 2328 hcd->rsrc_start = res->start; 2329 if (irq_sense == INTL) 2330 irq_trigger = IRQF_TRIGGER_LOW; 2331 else 2332 irq_trigger = IRQF_TRIGGER_FALLING; 2333 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger); 2334 if (ret != 0) { 2335 err("Failed to add hcd"); 2336 goto clean_up; 2337 } 2338 2339 return 0; 2340 2341 clean_up: 2342 if (reg) 2343 iounmap(reg); 2344 2345 return ret; 2346 } 2347 2348 static struct platform_driver r8a66597_driver = { 2349 .probe = r8a66597_probe, 2350 .remove = r8a66597_remove, 2351 .suspend = r8a66597_suspend, 2352 .resume = r8a66597_resume, 2353 .driver = { 2354 .name = (char *) hcd_name, 2355 .owner = THIS_MODULE, 2356 }, 2357 }; 2358 2359 static int __init r8a66597_init(void) 2360 { 2361 if (usb_disabled()) 2362 return -ENODEV; 2363 2364 info("driver %s, %s", hcd_name, DRIVER_VERSION); 2365 return platform_driver_register(&r8a66597_driver); 2366 } 2367 module_init(r8a66597_init); 2368 2369 static void __exit r8a66597_cleanup(void) 2370 { 2371 platform_driver_unregister(&r8a66597_driver); 2372 } 2373 module_exit(r8a66597_cleanup); 2374 2375