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 = 0xff; 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 printk(KERN_ERR "r8a66597: register access fail.\n"); 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 printk(KERN_ERR "r8a66597: register access fail.\n"); 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 printk(KERN_ERR "r8a66597: register access fail.\n"); 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 printk(KERN_ERR "r8a66597: Illegal root port number.\n"); 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 printk(KERN_ERR "r8a66597: unknown speed\n"); 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 dev_err(&urb->dev->dev, "External hub limit reached.\n"); 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 dev_err(&urb->dev->dev, 410 "cannot communicate with a USB device more than 10.(%x)\n", 411 r8a66597->address_map); 412 413 return 0; 414 } 415 416 /* this function must be called with interrupt disabled */ 417 static void free_usb_address(struct r8a66597 *r8a66597, 418 struct r8a66597_device *dev) 419 { 420 int port; 421 422 if (!dev) 423 return; 424 425 dbg("free_addr: addr=%d", dev->address); 426 427 dev->state = USB_STATE_DEFAULT; 428 r8a66597->address_map &= ~(1 << dev->address); 429 dev->address = 0; 430 dev_set_drvdata(&dev->udev->dev, NULL); 431 list_del(&dev->device_list); 432 kfree(dev); 433 434 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) { 435 if (r8a66597->root_hub[port].dev == dev) { 436 r8a66597->root_hub[port].dev = NULL; 437 break; 438 } 439 } 440 } 441 442 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, 443 u16 mask, u16 loop) 444 { 445 u16 tmp; 446 int i = 0; 447 448 do { 449 tmp = r8a66597_read(r8a66597, reg); 450 if (i++ > 1000000) { 451 printk(KERN_ERR "r8a66597: register%lx, loop %x " 452 "is timeout\n", reg, loop); 453 break; 454 } 455 ndelay(1); 456 } while ((tmp & mask) != loop); 457 } 458 459 /* this function must be called with interrupt disabled */ 460 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 461 { 462 u16 tmp; 463 464 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 465 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ 466 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 467 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); 468 } 469 470 /* this function must be called with interrupt disabled */ 471 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 472 { 473 u16 tmp; 474 475 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 476 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ 477 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); 478 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 479 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); 480 } 481 482 /* this function must be called with interrupt disabled */ 483 static void clear_all_buffer(struct r8a66597 *r8a66597, 484 struct r8a66597_pipe *pipe) 485 { 486 u16 tmp; 487 488 if (!pipe || pipe->info.pipenum == 0) 489 return; 490 491 pipe_stop(r8a66597, pipe); 492 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 493 tmp = r8a66597_read(r8a66597, pipe->pipectr); 494 tmp = r8a66597_read(r8a66597, pipe->pipectr); 495 tmp = r8a66597_read(r8a66597, pipe->pipectr); 496 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 497 } 498 499 /* this function must be called with interrupt disabled */ 500 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 501 struct r8a66597_pipe *pipe, int toggle) 502 { 503 if (toggle) 504 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 505 else 506 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 507 } 508 509 /* this function must be called with interrupt disabled */ 510 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 511 { 512 r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL); 513 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 514 } 515 516 /* this function must be called with interrupt disabled */ 517 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 518 struct r8a66597_pipe *pipe) 519 { 520 cfifo_change(r8a66597, 0); 521 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL); 522 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL); 523 524 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE, 525 pipe->fifosel); 526 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 527 } 528 529 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 530 { 531 struct r8a66597_pipe *pipe = hep->hcpriv; 532 533 if (usb_pipeendpoint(urb->pipe) == 0) 534 return 0; 535 else 536 return pipe->info.pipenum; 537 } 538 539 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 540 { 541 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 542 543 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 544 } 545 546 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 547 int urb_pipe) 548 { 549 if (!dev) 550 return NULL; 551 552 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 553 } 554 555 /* this function must be called with interrupt disabled */ 556 static void pipe_toggle_set(struct r8a66597 *r8a66597, 557 struct r8a66597_pipe *pipe, 558 struct urb *urb, int set) 559 { 560 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 561 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 562 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 563 564 if (!toggle) 565 return; 566 567 if (set) 568 *toggle |= 1 << endpoint; 569 else 570 *toggle &= ~(1 << endpoint); 571 } 572 573 /* this function must be called with interrupt disabled */ 574 static void pipe_toggle_save(struct r8a66597 *r8a66597, 575 struct r8a66597_pipe *pipe, 576 struct urb *urb) 577 { 578 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 579 pipe_toggle_set(r8a66597, pipe, urb, 1); 580 else 581 pipe_toggle_set(r8a66597, pipe, urb, 0); 582 } 583 584 /* this function must be called with interrupt disabled */ 585 static void pipe_toggle_restore(struct r8a66597 *r8a66597, 586 struct r8a66597_pipe *pipe, 587 struct urb *urb) 588 { 589 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 590 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 591 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 592 593 if (!toggle) 594 return; 595 596 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 597 } 598 599 /* this function must be called with interrupt disabled */ 600 static void pipe_buffer_setting(struct r8a66597 *r8a66597, 601 struct r8a66597_pipe_info *info) 602 { 603 u16 val = 0; 604 605 if (info->pipenum == 0) 606 return; 607 608 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 609 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 610 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 611 if (!info->dir_in) 612 val |= R8A66597_DIR; 613 if (info->type == R8A66597_BULK && info->dir_in) 614 val |= R8A66597_DBLB | R8A66597_SHTNAK; 615 val |= info->type | info->epnum; 616 r8a66597_write(r8a66597, val, PIPECFG); 617 618 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 619 PIPEBUF); 620 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 621 PIPEMAXP); 622 r8a66597_write(r8a66597, info->interval, PIPEPERI); 623 } 624 625 /* this function must be called with interrupt disabled */ 626 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 627 { 628 struct r8a66597_pipe_info *info; 629 struct urb *urb = td->urb; 630 631 if (td->pipenum > 0) { 632 info = &td->pipe->info; 633 cfifo_change(r8a66597, 0); 634 pipe_buffer_setting(r8a66597, info); 635 636 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 637 usb_pipeout(urb->pipe)) && 638 !usb_pipecontrol(urb->pipe)) { 639 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 640 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 641 clear_all_buffer(r8a66597, td->pipe); 642 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 643 usb_pipeout(urb->pipe), 1); 644 } 645 pipe_toggle_restore(r8a66597, td->pipe, urb); 646 } 647 } 648 649 /* this function must be called with interrupt disabled */ 650 static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 651 struct usb_endpoint_descriptor *ep) 652 { 653 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 654 655 memset(array, 0, sizeof(array)); 656 switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 657 case USB_ENDPOINT_XFER_BULK: 658 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 659 array[i++] = 4; 660 else { 661 array[i++] = 3; 662 array[i++] = 5; 663 } 664 break; 665 case USB_ENDPOINT_XFER_INT: 666 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { 667 array[i++] = 6; 668 array[i++] = 7; 669 array[i++] = 8; 670 } else 671 array[i++] = 9; 672 break; 673 case USB_ENDPOINT_XFER_ISOC: 674 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 675 array[i++] = 2; 676 else 677 array[i++] = 1; 678 break; 679 default: 680 printk(KERN_ERR "r8a66597: Illegal type\n"); 681 return 0; 682 } 683 684 i = 1; 685 min = array[0]; 686 while (array[i] != 0) { 687 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 688 min = array[i]; 689 i++; 690 } 691 692 return min; 693 } 694 695 static u16 get_r8a66597_type(__u8 type) 696 { 697 u16 r8a66597_type; 698 699 switch (type) { 700 case USB_ENDPOINT_XFER_BULK: 701 r8a66597_type = R8A66597_BULK; 702 break; 703 case USB_ENDPOINT_XFER_INT: 704 r8a66597_type = R8A66597_INT; 705 break; 706 case USB_ENDPOINT_XFER_ISOC: 707 r8a66597_type = R8A66597_ISO; 708 break; 709 default: 710 printk(KERN_ERR "r8a66597: Illegal type\n"); 711 r8a66597_type = 0x0000; 712 break; 713 } 714 715 return r8a66597_type; 716 } 717 718 static u16 get_bufnum(u16 pipenum) 719 { 720 u16 bufnum = 0; 721 722 if (pipenum == 0) 723 bufnum = 0; 724 else if (check_bulk_or_isoc(pipenum)) 725 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 726 else if (check_interrupt(pipenum)) 727 bufnum = 4 + (pipenum - 6); 728 else 729 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 730 731 return bufnum; 732 } 733 734 static u16 get_buf_bsize(u16 pipenum) 735 { 736 u16 buf_bsize = 0; 737 738 if (pipenum == 0) 739 buf_bsize = 3; 740 else if (check_bulk_or_isoc(pipenum)) 741 buf_bsize = R8A66597_BUF_BSIZE - 1; 742 else if (check_interrupt(pipenum)) 743 buf_bsize = 0; 744 else 745 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 746 747 return buf_bsize; 748 } 749 750 /* this function must be called with interrupt disabled */ 751 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 752 struct r8a66597_device *dev, 753 struct r8a66597_pipe *pipe, 754 struct urb *urb) 755 { 756 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597) 757 int i; 758 struct r8a66597_pipe_info *info = &pipe->info; 759 760 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 761 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 762 if ((r8a66597->dma_map & (1 << i)) != 0) 763 continue; 764 765 dev_info(&dev->udev->dev, 766 "address %d, EndpointAddress 0x%02x use " 767 "DMA FIFO\n", usb_pipedevice(urb->pipe), 768 info->dir_in ? 769 USB_ENDPOINT_DIR_MASK + info->epnum 770 : info->epnum); 771 772 r8a66597->dma_map |= 1 << i; 773 dev->dma_map |= 1 << i; 774 set_pipe_reg_addr(pipe, i); 775 776 cfifo_change(r8a66597, 0); 777 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, 778 MBW | CURPIPE, pipe->fifosel); 779 780 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 781 pipe->info.pipenum); 782 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 783 break; 784 } 785 } 786 #endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */ 787 } 788 789 /* this function must be called with interrupt disabled */ 790 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 791 struct usb_host_endpoint *hep, 792 struct r8a66597_pipe_info *info) 793 { 794 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 795 struct r8a66597_pipe *pipe = hep->hcpriv; 796 797 dbg("enable_pipe:"); 798 799 pipe->info = *info; 800 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 801 r8a66597->pipe_cnt[pipe->info.pipenum]++; 802 dev->pipe_cnt[pipe->info.pipenum]++; 803 804 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 805 } 806 807 /* this function must be called with interrupt disabled */ 808 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 809 { 810 struct r8a66597_td *td, *next; 811 struct urb *urb; 812 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 813 814 if (list_empty(list)) 815 return; 816 817 list_for_each_entry_safe(td, next, list, queue) { 818 if (!td) 819 continue; 820 if (td->address != address) 821 continue; 822 823 urb = td->urb; 824 list_del(&td->queue); 825 kfree(td); 826 827 if (urb) { 828 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), 829 urb); 830 831 spin_unlock(&r8a66597->lock); 832 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, 833 -ENODEV); 834 spin_lock(&r8a66597->lock); 835 } 836 break; 837 } 838 } 839 840 /* this function must be called with interrupt disabled */ 841 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 842 struct r8a66597_device *dev) 843 { 844 int check_ep0 = 0; 845 u16 pipenum; 846 847 if (!dev) 848 return; 849 850 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 851 if (!dev->pipe_cnt[pipenum]) 852 continue; 853 854 if (!check_ep0) { 855 check_ep0 = 1; 856 force_dequeue(r8a66597, 0, dev->address); 857 } 858 859 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 860 dev->pipe_cnt[pipenum] = 0; 861 force_dequeue(r8a66597, pipenum, dev->address); 862 } 863 864 dbg("disable_pipe"); 865 866 r8a66597->dma_map &= ~(dev->dma_map); 867 dev->dma_map = 0; 868 } 869 870 static u16 get_interval(struct urb *urb, __u8 interval) 871 { 872 u16 time = 1; 873 int i; 874 875 if (urb->dev->speed == USB_SPEED_HIGH) { 876 if (interval > IITV) 877 time = IITV; 878 else 879 time = interval ? interval - 1 : 0; 880 } else { 881 if (interval > 128) { 882 time = IITV; 883 } else { 884 /* calculate the nearest value for PIPEPERI */ 885 for (i = 0; i < 7; i++) { 886 if ((1 << i) < interval && 887 (1 << (i + 1) > interval)) 888 time = 1 << i; 889 } 890 } 891 } 892 893 return time; 894 } 895 896 static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 897 { 898 __u8 i; 899 unsigned long time = 1; 900 901 if (usb_pipeisoc(urb->pipe)) 902 return 0; 903 904 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 905 for (i = 0; i < (interval - 1); i++) 906 time *= 2; 907 time = time * 125 / 1000; /* uSOF -> msec */ 908 } else { 909 time = interval; 910 } 911 912 return time; 913 } 914 915 /* this function must be called with interrupt disabled */ 916 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 917 struct usb_host_endpoint *hep, 918 struct usb_endpoint_descriptor *ep) 919 { 920 struct r8a66597_pipe_info info; 921 922 info.pipenum = get_empty_pipenum(r8a66597, ep); 923 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 924 info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; 925 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize); 926 info.type = get_r8a66597_type(ep->bmAttributes 927 & USB_ENDPOINT_XFERTYPE_MASK); 928 info.bufnum = get_bufnum(info.pipenum); 929 info.buf_bsize = get_buf_bsize(info.pipenum); 930 if (info.type == R8A66597_BULK) { 931 info.interval = 0; 932 info.timer_interval = 0; 933 } else { 934 info.interval = get_interval(urb, ep->bInterval); 935 info.timer_interval = get_timer_interval(urb, ep->bInterval); 936 } 937 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 938 info.dir_in = 1; 939 else 940 info.dir_in = 0; 941 942 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 943 } 944 945 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 946 { 947 struct r8a66597_device *dev; 948 949 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 950 dev->state = USB_STATE_CONFIGURED; 951 } 952 953 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 954 u16 pipenum) 955 { 956 if (pipenum == 0 && usb_pipeout(urb->pipe)) 957 enable_irq_empty(r8a66597, pipenum); 958 else 959 enable_irq_ready(r8a66597, pipenum); 960 961 if (!usb_pipeisoc(urb->pipe)) 962 enable_irq_nrdy(r8a66597, pipenum); 963 } 964 965 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 966 { 967 disable_irq_ready(r8a66597, pipenum); 968 disable_irq_nrdy(r8a66597, pipenum); 969 } 970 971 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 972 { 973 mod_timer(&r8a66597->rh_timer, 974 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 975 } 976 977 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, 978 int connect) 979 { 980 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 981 982 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 983 rh->scount = R8A66597_MAX_SAMPLING; 984 if (connect) 985 rh->port |= 1 << USB_PORT_FEAT_CONNECTION; 986 else 987 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION); 988 rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION; 989 990 r8a66597_root_hub_start_polling(r8a66597); 991 } 992 993 /* this function must be called with interrupt disabled */ 994 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 995 u16 syssts) 996 { 997 if (syssts == SE0) { 998 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 999 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1000 return; 1001 } 1002 1003 if (syssts == FS_JSTS) 1004 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 1005 else if (syssts == LS_JSTS) 1006 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 1007 1008 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 1009 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 1010 } 1011 1012 /* this function must be called with interrupt disabled */ 1013 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 1014 { 1015 u16 speed = get_rh_usb_speed(r8a66597, port); 1016 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1017 1018 if (speed == HSMODE) 1019 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED); 1020 else if (speed == LSMODE) 1021 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED); 1022 1023 rh->port &= ~(1 << USB_PORT_FEAT_RESET); 1024 rh->port |= 1 << USB_PORT_FEAT_ENABLE; 1025 } 1026 1027 /* this function must be called with interrupt disabled */ 1028 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1029 { 1030 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1031 1032 disable_r8a66597_pipe_all(r8a66597, dev); 1033 free_usb_address(r8a66597, dev); 1034 1035 start_root_hub_sampling(r8a66597, port, 0); 1036 } 1037 1038 /* this function must be called with interrupt disabled */ 1039 static void prepare_setup_packet(struct r8a66597 *r8a66597, 1040 struct r8a66597_td *td) 1041 { 1042 int i; 1043 __le16 *p = (__le16 *)td->urb->setup_packet; 1044 unsigned long setup_addr = USBREQ; 1045 1046 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1047 DCPMAXP); 1048 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1049 1050 for (i = 0; i < 4; i++) { 1051 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1052 setup_addr += 2; 1053 } 1054 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1055 } 1056 1057 /* this function must be called with interrupt disabled */ 1058 static void prepare_packet_read(struct r8a66597 *r8a66597, 1059 struct r8a66597_td *td) 1060 { 1061 struct urb *urb = td->urb; 1062 1063 if (usb_pipecontrol(urb->pipe)) { 1064 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1065 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1066 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1067 if (urb->actual_length == 0) { 1068 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1069 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1070 } 1071 pipe_irq_disable(r8a66597, td->pipenum); 1072 pipe_start(r8a66597, td->pipe); 1073 pipe_irq_enable(r8a66597, urb, td->pipenum); 1074 } else { 1075 if (urb->actual_length == 0) { 1076 pipe_irq_disable(r8a66597, td->pipenum); 1077 pipe_setting(r8a66597, td); 1078 pipe_stop(r8a66597, td->pipe); 1079 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1080 1081 if (td->pipe->pipetre) { 1082 r8a66597_write(r8a66597, TRCLR, 1083 td->pipe->pipetre); 1084 r8a66597_write(r8a66597, 1085 DIV_ROUND_UP 1086 (urb->transfer_buffer_length, 1087 td->maxpacket), 1088 td->pipe->pipetrn); 1089 r8a66597_bset(r8a66597, TRENB, 1090 td->pipe->pipetre); 1091 } 1092 1093 pipe_start(r8a66597, td->pipe); 1094 pipe_irq_enable(r8a66597, urb, td->pipenum); 1095 } 1096 } 1097 } 1098 1099 /* this function must be called with interrupt disabled */ 1100 static void prepare_packet_write(struct r8a66597 *r8a66597, 1101 struct r8a66597_td *td) 1102 { 1103 u16 tmp; 1104 struct urb *urb = td->urb; 1105 1106 if (usb_pipecontrol(urb->pipe)) { 1107 pipe_stop(r8a66597, td->pipe); 1108 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1109 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1110 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1111 if (urb->actual_length == 0) { 1112 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1113 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1114 } 1115 } else { 1116 if (urb->actual_length == 0) 1117 pipe_setting(r8a66597, td); 1118 if (td->pipe->pipetre) 1119 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1120 } 1121 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1122 1123 fifo_change_from_pipe(r8a66597, td->pipe); 1124 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1125 if (unlikely((tmp & FRDY) == 0)) 1126 pipe_irq_enable(r8a66597, urb, td->pipenum); 1127 else 1128 packet_write(r8a66597, td->pipenum); 1129 pipe_start(r8a66597, td->pipe); 1130 } 1131 1132 /* this function must be called with interrupt disabled */ 1133 static void prepare_status_packet(struct r8a66597 *r8a66597, 1134 struct r8a66597_td *td) 1135 { 1136 struct urb *urb = td->urb; 1137 1138 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1139 pipe_stop(r8a66597, td->pipe); 1140 1141 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1142 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1143 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1144 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1145 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1146 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1147 enable_irq_empty(r8a66597, 0); 1148 } else { 1149 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1150 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1151 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1152 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1153 enable_irq_ready(r8a66597, 0); 1154 } 1155 enable_irq_nrdy(r8a66597, 0); 1156 pipe_start(r8a66597, td->pipe); 1157 } 1158 1159 static int is_set_address(unsigned char *setup_packet) 1160 { 1161 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1162 setup_packet[1] == USB_REQ_SET_ADDRESS) 1163 return 1; 1164 else 1165 return 0; 1166 } 1167 1168 /* this function must be called with interrupt disabled */ 1169 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1170 { 1171 BUG_ON(!td); 1172 1173 switch (td->type) { 1174 case USB_PID_SETUP: 1175 if (is_set_address(td->urb->setup_packet)) { 1176 td->set_address = 1; 1177 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1178 td->urb); 1179 if (td->urb->setup_packet[2] == 0) 1180 return -EPIPE; 1181 } 1182 prepare_setup_packet(r8a66597, td); 1183 break; 1184 case USB_PID_IN: 1185 prepare_packet_read(r8a66597, td); 1186 break; 1187 case USB_PID_OUT: 1188 prepare_packet_write(r8a66597, td); 1189 break; 1190 case USB_PID_ACK: 1191 prepare_status_packet(r8a66597, td); 1192 break; 1193 default: 1194 printk(KERN_ERR "r8a66597: invalid type.\n"); 1195 break; 1196 } 1197 1198 return 0; 1199 } 1200 1201 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1202 { 1203 if (usb_pipeisoc(urb->pipe)) { 1204 if (urb->number_of_packets == td->iso_cnt) 1205 return 1; 1206 } 1207 1208 /* control or bulk or interrupt */ 1209 if ((urb->transfer_buffer_length <= urb->actual_length) || 1210 (td->short_packet) || (td->zero_packet)) 1211 return 1; 1212 1213 return 0; 1214 } 1215 1216 /* this function must be called with interrupt disabled */ 1217 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1218 { 1219 unsigned long time; 1220 1221 BUG_ON(!td); 1222 1223 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1224 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1225 r8a66597->timeout_map |= 1 << td->pipenum; 1226 switch (usb_pipetype(td->urb->pipe)) { 1227 case PIPE_INTERRUPT: 1228 case PIPE_ISOCHRONOUS: 1229 time = 30; 1230 break; 1231 default: 1232 time = 300; 1233 break; 1234 } 1235 1236 mod_timer(&r8a66597->td_timer[td->pipenum], 1237 jiffies + msecs_to_jiffies(time)); 1238 } 1239 } 1240 1241 /* this function must be called with interrupt disabled */ 1242 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1243 u16 pipenum, struct urb *urb, int status) 1244 __releases(r8a66597->lock) __acquires(r8a66597->lock) 1245 { 1246 int restart = 0; 1247 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1248 1249 r8a66597->timeout_map &= ~(1 << pipenum); 1250 1251 if (likely(td)) { 1252 if (td->set_address && (status != 0 || urb->unlinked)) 1253 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1254 1255 pipe_toggle_save(r8a66597, td->pipe, urb); 1256 list_del(&td->queue); 1257 kfree(td); 1258 } 1259 1260 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1261 restart = 1; 1262 1263 if (likely(urb)) { 1264 if (usb_pipeisoc(urb->pipe)) 1265 urb->start_frame = r8a66597_get_frame(hcd); 1266 1267 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 1268 spin_unlock(&r8a66597->lock); 1269 usb_hcd_giveback_urb(hcd, urb, status); 1270 spin_lock(&r8a66597->lock); 1271 } 1272 1273 if (restart) { 1274 td = r8a66597_get_td(r8a66597, pipenum); 1275 if (unlikely(!td)) 1276 return; 1277 1278 start_transfer(r8a66597, td); 1279 set_td_timer(r8a66597, td); 1280 } 1281 } 1282 1283 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1284 { 1285 u16 tmp; 1286 int rcv_len, bufsize, urb_len, size; 1287 u16 *buf; 1288 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1289 struct urb *urb; 1290 int finish = 0; 1291 int status = 0; 1292 1293 if (unlikely(!td)) 1294 return; 1295 urb = td->urb; 1296 1297 fifo_change_from_pipe(r8a66597, td->pipe); 1298 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1299 if (unlikely((tmp & FRDY) == 0)) { 1300 pipe_stop(r8a66597, td->pipe); 1301 pipe_irq_disable(r8a66597, pipenum); 1302 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); 1303 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1304 return; 1305 } 1306 1307 /* prepare parameters */ 1308 rcv_len = tmp & DTLN; 1309 if (usb_pipeisoc(urb->pipe)) { 1310 buf = (u16 *)(urb->transfer_buffer + 1311 urb->iso_frame_desc[td->iso_cnt].offset); 1312 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1313 } else { 1314 buf = (void *)urb->transfer_buffer + urb->actual_length; 1315 urb_len = urb->transfer_buffer_length - urb->actual_length; 1316 } 1317 bufsize = min(urb_len, (int) td->maxpacket); 1318 if (rcv_len <= bufsize) { 1319 size = rcv_len; 1320 } else { 1321 size = bufsize; 1322 status = -EOVERFLOW; 1323 finish = 1; 1324 } 1325 1326 /* update parameters */ 1327 urb->actual_length += size; 1328 if (rcv_len == 0) 1329 td->zero_packet = 1; 1330 if (rcv_len < bufsize) { 1331 td->short_packet = 1; 1332 } 1333 if (usb_pipeisoc(urb->pipe)) { 1334 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1335 urb->iso_frame_desc[td->iso_cnt].status = status; 1336 td->iso_cnt++; 1337 finish = 0; 1338 } 1339 1340 /* check transfer finish */ 1341 if (finish || check_transfer_finish(td, urb)) { 1342 pipe_stop(r8a66597, td->pipe); 1343 pipe_irq_disable(r8a66597, pipenum); 1344 finish = 1; 1345 } 1346 1347 /* read fifo */ 1348 if (urb->transfer_buffer) { 1349 if (size == 0) 1350 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1351 else 1352 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1353 buf, size); 1354 } 1355 1356 if (finish && pipenum != 0) 1357 finish_request(r8a66597, td, pipenum, urb, status); 1358 } 1359 1360 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1361 { 1362 u16 tmp; 1363 int bufsize, size; 1364 u16 *buf; 1365 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1366 struct urb *urb; 1367 1368 if (unlikely(!td)) 1369 return; 1370 urb = td->urb; 1371 1372 fifo_change_from_pipe(r8a66597, td->pipe); 1373 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1374 if (unlikely((tmp & FRDY) == 0)) { 1375 pipe_stop(r8a66597, td->pipe); 1376 pipe_irq_disable(r8a66597, pipenum); 1377 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); 1378 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1379 return; 1380 } 1381 1382 /* prepare parameters */ 1383 bufsize = td->maxpacket; 1384 if (usb_pipeisoc(urb->pipe)) { 1385 buf = (u16 *)(urb->transfer_buffer + 1386 urb->iso_frame_desc[td->iso_cnt].offset); 1387 size = min(bufsize, 1388 (int)urb->iso_frame_desc[td->iso_cnt].length); 1389 } else { 1390 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1391 size = min((int)bufsize, 1392 urb->transfer_buffer_length - urb->actual_length); 1393 } 1394 1395 /* write fifo */ 1396 if (pipenum > 0) 1397 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1398 if (urb->transfer_buffer) { 1399 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size); 1400 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1401 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1402 } 1403 1404 /* update parameters */ 1405 urb->actual_length += size; 1406 if (usb_pipeisoc(urb->pipe)) { 1407 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1408 urb->iso_frame_desc[td->iso_cnt].status = 0; 1409 td->iso_cnt++; 1410 } 1411 1412 /* check transfer finish */ 1413 if (check_transfer_finish(td, urb)) { 1414 disable_irq_ready(r8a66597, pipenum); 1415 enable_irq_empty(r8a66597, pipenum); 1416 if (!usb_pipeisoc(urb->pipe)) 1417 enable_irq_nrdy(r8a66597, pipenum); 1418 } else 1419 pipe_irq_enable(r8a66597, urb, pipenum); 1420 } 1421 1422 1423 static void check_next_phase(struct r8a66597 *r8a66597, int status) 1424 { 1425 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1426 struct urb *urb; 1427 u8 finish = 0; 1428 1429 if (unlikely(!td)) 1430 return; 1431 urb = td->urb; 1432 1433 switch (td->type) { 1434 case USB_PID_IN: 1435 case USB_PID_OUT: 1436 if (check_transfer_finish(td, urb)) 1437 td->type = USB_PID_ACK; 1438 break; 1439 case USB_PID_SETUP: 1440 if (urb->transfer_buffer_length == urb->actual_length) 1441 td->type = USB_PID_ACK; 1442 else if (usb_pipeout(urb->pipe)) 1443 td->type = USB_PID_OUT; 1444 else 1445 td->type = USB_PID_IN; 1446 break; 1447 case USB_PID_ACK: 1448 finish = 1; 1449 break; 1450 } 1451 1452 if (finish || status != 0 || urb->unlinked) 1453 finish_request(r8a66597, td, 0, urb, status); 1454 else 1455 start_transfer(r8a66597, td); 1456 } 1457 1458 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1459 { 1460 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1461 1462 if (td) { 1463 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1464 1465 if (pid == PID_NAK) 1466 return -ECONNRESET; 1467 else 1468 return -EPIPE; 1469 } 1470 return 0; 1471 } 1472 1473 static void irq_pipe_ready(struct r8a66597 *r8a66597) 1474 { 1475 u16 check; 1476 u16 pipenum; 1477 u16 mask; 1478 struct r8a66597_td *td; 1479 1480 mask = r8a66597_read(r8a66597, BRDYSTS) 1481 & r8a66597_read(r8a66597, BRDYENB); 1482 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1483 if (mask & BRDY0) { 1484 td = r8a66597_get_td(r8a66597, 0); 1485 if (td && td->type == USB_PID_IN) 1486 packet_read(r8a66597, 0); 1487 else 1488 pipe_irq_disable(r8a66597, 0); 1489 check_next_phase(r8a66597, 0); 1490 } 1491 1492 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1493 check = 1 << pipenum; 1494 if (mask & check) { 1495 td = r8a66597_get_td(r8a66597, pipenum); 1496 if (unlikely(!td)) 1497 continue; 1498 1499 if (td->type == USB_PID_IN) 1500 packet_read(r8a66597, pipenum); 1501 else if (td->type == USB_PID_OUT) 1502 packet_write(r8a66597, pipenum); 1503 } 1504 } 1505 } 1506 1507 static void irq_pipe_empty(struct r8a66597 *r8a66597) 1508 { 1509 u16 tmp; 1510 u16 check; 1511 u16 pipenum; 1512 u16 mask; 1513 struct r8a66597_td *td; 1514 1515 mask = r8a66597_read(r8a66597, BEMPSTS) 1516 & r8a66597_read(r8a66597, BEMPENB); 1517 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1518 if (mask & BEMP0) { 1519 cfifo_change(r8a66597, 0); 1520 td = r8a66597_get_td(r8a66597, 0); 1521 if (td && td->type != USB_PID_OUT) 1522 disable_irq_empty(r8a66597, 0); 1523 check_next_phase(r8a66597, 0); 1524 } 1525 1526 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1527 check = 1 << pipenum; 1528 if (mask & check) { 1529 struct r8a66597_td *td; 1530 td = r8a66597_get_td(r8a66597, pipenum); 1531 if (unlikely(!td)) 1532 continue; 1533 1534 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1535 if ((tmp & INBUFM) == 0) { 1536 disable_irq_empty(r8a66597, pipenum); 1537 pipe_irq_disable(r8a66597, pipenum); 1538 finish_request(r8a66597, td, pipenum, td->urb, 1539 0); 1540 } 1541 } 1542 } 1543 } 1544 1545 static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1546 { 1547 u16 check; 1548 u16 pipenum; 1549 u16 mask; 1550 int status; 1551 1552 mask = r8a66597_read(r8a66597, NRDYSTS) 1553 & r8a66597_read(r8a66597, NRDYENB); 1554 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1555 if (mask & NRDY0) { 1556 cfifo_change(r8a66597, 0); 1557 status = get_urb_error(r8a66597, 0); 1558 pipe_irq_disable(r8a66597, 0); 1559 check_next_phase(r8a66597, status); 1560 } 1561 1562 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1563 check = 1 << pipenum; 1564 if (mask & check) { 1565 struct r8a66597_td *td; 1566 td = r8a66597_get_td(r8a66597, pipenum); 1567 if (unlikely(!td)) 1568 continue; 1569 1570 status = get_urb_error(r8a66597, pipenum); 1571 pipe_irq_disable(r8a66597, pipenum); 1572 pipe_stop(r8a66597, td->pipe); 1573 finish_request(r8a66597, td, pipenum, td->urb, status); 1574 } 1575 } 1576 } 1577 1578 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1579 { 1580 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1581 u16 intsts0, intsts1, intsts2; 1582 u16 intenb0, intenb1, intenb2; 1583 u16 mask0, mask1, mask2; 1584 int status; 1585 1586 spin_lock(&r8a66597->lock); 1587 1588 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1589 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1590 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1591 intenb0 = r8a66597_read(r8a66597, INTENB0); 1592 intenb1 = r8a66597_read(r8a66597, INTENB1); 1593 intenb2 = r8a66597_read(r8a66597, INTENB2); 1594 1595 mask2 = intsts2 & intenb2; 1596 mask1 = intsts1 & intenb1; 1597 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1598 if (mask2) { 1599 if (mask2 & ATTCH) { 1600 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1601 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1602 1603 /* start usb bus sampling */ 1604 start_root_hub_sampling(r8a66597, 1, 1); 1605 } 1606 if (mask2 & DTCH) { 1607 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1608 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1609 r8a66597_usb_disconnect(r8a66597, 1); 1610 } 1611 } 1612 1613 if (mask1) { 1614 if (mask1 & ATTCH) { 1615 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1616 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1617 1618 /* start usb bus sampling */ 1619 start_root_hub_sampling(r8a66597, 0, 1); 1620 } 1621 if (mask1 & DTCH) { 1622 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1623 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1624 r8a66597_usb_disconnect(r8a66597, 0); 1625 } 1626 if (mask1 & SIGN) { 1627 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1628 status = get_urb_error(r8a66597, 0); 1629 check_next_phase(r8a66597, status); 1630 } 1631 if (mask1 & SACK) { 1632 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1633 check_next_phase(r8a66597, 0); 1634 } 1635 } 1636 if (mask0) { 1637 if (mask0 & BRDY) 1638 irq_pipe_ready(r8a66597); 1639 if (mask0 & BEMP) 1640 irq_pipe_empty(r8a66597); 1641 if (mask0 & NRDY) 1642 irq_pipe_nrdy(r8a66597); 1643 } 1644 1645 spin_unlock(&r8a66597->lock); 1646 return IRQ_HANDLED; 1647 } 1648 1649 /* this function must be called with interrupt disabled */ 1650 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1651 { 1652 u16 tmp; 1653 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1654 1655 if (rh->port & (1 << USB_PORT_FEAT_RESET)) { 1656 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1657 1658 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1659 if ((tmp & USBRST) == USBRST) { 1660 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1661 dvstctr_reg); 1662 r8a66597_root_hub_start_polling(r8a66597); 1663 } else 1664 r8a66597_usb_connect(r8a66597, port); 1665 } 1666 1667 if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) { 1668 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1669 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1670 } 1671 1672 if (rh->scount > 0) { 1673 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1674 if (tmp == rh->old_syssts) { 1675 rh->scount--; 1676 if (rh->scount == 0) 1677 r8a66597_check_syssts(r8a66597, port, tmp); 1678 else 1679 r8a66597_root_hub_start_polling(r8a66597); 1680 } else { 1681 rh->scount = R8A66597_MAX_SAMPLING; 1682 rh->old_syssts = tmp; 1683 r8a66597_root_hub_start_polling(r8a66597); 1684 } 1685 } 1686 } 1687 1688 static void r8a66597_interval_timer(unsigned long _r8a66597) 1689 { 1690 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1691 unsigned long flags; 1692 u16 pipenum; 1693 struct r8a66597_td *td; 1694 1695 spin_lock_irqsave(&r8a66597->lock, flags); 1696 1697 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1698 if (!(r8a66597->interval_map & (1 << pipenum))) 1699 continue; 1700 if (timer_pending(&r8a66597->interval_timer[pipenum])) 1701 continue; 1702 1703 td = r8a66597_get_td(r8a66597, pipenum); 1704 if (td) 1705 start_transfer(r8a66597, td); 1706 } 1707 1708 spin_unlock_irqrestore(&r8a66597->lock, flags); 1709 } 1710 1711 static void r8a66597_td_timer(unsigned long _r8a66597) 1712 { 1713 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1714 unsigned long flags; 1715 u16 pipenum; 1716 struct r8a66597_td *td, *new_td = NULL; 1717 struct r8a66597_pipe *pipe; 1718 1719 spin_lock_irqsave(&r8a66597->lock, flags); 1720 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1721 if (!(r8a66597->timeout_map & (1 << pipenum))) 1722 continue; 1723 if (timer_pending(&r8a66597->td_timer[pipenum])) 1724 continue; 1725 1726 td = r8a66597_get_td(r8a66597, pipenum); 1727 if (!td) { 1728 r8a66597->timeout_map &= ~(1 << pipenum); 1729 continue; 1730 } 1731 1732 if (td->urb->actual_length) { 1733 set_td_timer(r8a66597, td); 1734 break; 1735 } 1736 1737 pipe = td->pipe; 1738 pipe_stop(r8a66597, pipe); 1739 1740 new_td = td; 1741 do { 1742 list_move_tail(&new_td->queue, 1743 &r8a66597->pipe_queue[pipenum]); 1744 new_td = r8a66597_get_td(r8a66597, pipenum); 1745 if (!new_td) { 1746 new_td = td; 1747 break; 1748 } 1749 } while (td != new_td && td->address == new_td->address); 1750 1751 start_transfer(r8a66597, new_td); 1752 1753 if (td == new_td) 1754 r8a66597->timeout_map &= ~(1 << pipenum); 1755 else 1756 set_td_timer(r8a66597, new_td); 1757 break; 1758 } 1759 spin_unlock_irqrestore(&r8a66597->lock, flags); 1760 } 1761 1762 static void r8a66597_timer(unsigned long _r8a66597) 1763 { 1764 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1765 unsigned long flags; 1766 1767 spin_lock_irqsave(&r8a66597->lock, flags); 1768 1769 r8a66597_root_hub_control(r8a66597, 0); 1770 r8a66597_root_hub_control(r8a66597, 1); 1771 1772 spin_unlock_irqrestore(&r8a66597->lock, flags); 1773 } 1774 1775 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1776 { 1777 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1778 1779 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1780 (urb->dev->state == USB_STATE_CONFIGURED)) 1781 return 1; 1782 else 1783 return 0; 1784 } 1785 1786 static int r8a66597_start(struct usb_hcd *hcd) 1787 { 1788 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1789 1790 hcd->state = HC_STATE_RUNNING; 1791 return enable_controller(r8a66597); 1792 } 1793 1794 static void r8a66597_stop(struct usb_hcd *hcd) 1795 { 1796 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1797 1798 disable_controller(r8a66597); 1799 } 1800 1801 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1802 { 1803 unsigned int usb_address = usb_pipedevice(urb->pipe); 1804 u16 root_port, hub_port; 1805 1806 if (usb_address == 0) { 1807 get_port_number(urb->dev->devpath, 1808 &root_port, &hub_port); 1809 set_devadd_reg(r8a66597, 0, 1810 get_r8a66597_usb_speed(urb->dev->speed), 1811 get_parent_r8a66597_address(r8a66597, urb->dev), 1812 hub_port, root_port); 1813 } 1814 } 1815 1816 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1817 struct urb *urb, 1818 struct usb_host_endpoint *hep) 1819 { 1820 struct r8a66597_td *td; 1821 u16 pipenum; 1822 1823 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1824 if (td == NULL) 1825 return NULL; 1826 1827 pipenum = r8a66597_get_pipenum(urb, hep); 1828 td->pipenum = pipenum; 1829 td->pipe = hep->hcpriv; 1830 td->urb = urb; 1831 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1832 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1833 !usb_pipein(urb->pipe)); 1834 if (usb_pipecontrol(urb->pipe)) 1835 td->type = USB_PID_SETUP; 1836 else if (usb_pipein(urb->pipe)) 1837 td->type = USB_PID_IN; 1838 else 1839 td->type = USB_PID_OUT; 1840 INIT_LIST_HEAD(&td->queue); 1841 1842 return td; 1843 } 1844 1845 static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1846 struct urb *urb, 1847 gfp_t mem_flags) 1848 { 1849 struct usb_host_endpoint *hep = urb->ep; 1850 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1851 struct r8a66597_td *td = NULL; 1852 int ret, request = 0; 1853 unsigned long flags; 1854 1855 spin_lock_irqsave(&r8a66597->lock, flags); 1856 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1857 ret = -ENODEV; 1858 goto error_not_linked; 1859 } 1860 1861 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1862 if (ret) 1863 goto error_not_linked; 1864 1865 if (!hep->hcpriv) { 1866 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1867 GFP_ATOMIC); 1868 if (!hep->hcpriv) { 1869 ret = -ENOMEM; 1870 goto error; 1871 } 1872 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1873 if (usb_pipeendpoint(urb->pipe)) 1874 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1875 } 1876 1877 if (unlikely(check_pipe_config(r8a66597, urb))) 1878 init_pipe_config(r8a66597, urb); 1879 1880 set_address_zero(r8a66597, urb); 1881 td = r8a66597_make_td(r8a66597, urb, hep); 1882 if (td == NULL) { 1883 ret = -ENOMEM; 1884 goto error; 1885 } 1886 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1887 request = 1; 1888 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1889 urb->hcpriv = td; 1890 1891 if (request) { 1892 if (td->pipe->info.timer_interval) { 1893 r8a66597->interval_map |= 1 << td->pipenum; 1894 mod_timer(&r8a66597->interval_timer[td->pipenum], 1895 jiffies + msecs_to_jiffies( 1896 td->pipe->info.timer_interval)); 1897 } else { 1898 ret = start_transfer(r8a66597, td); 1899 if (ret < 0) { 1900 list_del(&td->queue); 1901 kfree(td); 1902 } 1903 } 1904 } else 1905 set_td_timer(r8a66597, td); 1906 1907 error: 1908 if (ret) 1909 usb_hcd_unlink_urb_from_ep(hcd, urb); 1910 error_not_linked: 1911 spin_unlock_irqrestore(&r8a66597->lock, flags); 1912 return ret; 1913 } 1914 1915 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1916 int status) 1917 { 1918 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1919 struct r8a66597_td *td; 1920 unsigned long flags; 1921 int rc; 1922 1923 spin_lock_irqsave(&r8a66597->lock, flags); 1924 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1925 if (rc) 1926 goto done; 1927 1928 if (urb->hcpriv) { 1929 td = urb->hcpriv; 1930 pipe_stop(r8a66597, td->pipe); 1931 pipe_irq_disable(r8a66597, td->pipenum); 1932 disable_irq_empty(r8a66597, td->pipenum); 1933 finish_request(r8a66597, td, td->pipenum, urb, status); 1934 } 1935 done: 1936 spin_unlock_irqrestore(&r8a66597->lock, flags); 1937 return rc; 1938 } 1939 1940 static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1941 struct usb_host_endpoint *hep) 1942 { 1943 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1944 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1945 struct r8a66597_td *td; 1946 struct urb *urb = NULL; 1947 u16 pipenum; 1948 unsigned long flags; 1949 1950 if (pipe == NULL) 1951 return; 1952 pipenum = pipe->info.pipenum; 1953 1954 if (pipenum == 0) { 1955 kfree(hep->hcpriv); 1956 hep->hcpriv = NULL; 1957 return; 1958 } 1959 1960 spin_lock_irqsave(&r8a66597->lock, flags); 1961 pipe_stop(r8a66597, pipe); 1962 pipe_irq_disable(r8a66597, pipenum); 1963 disable_irq_empty(r8a66597, pipenum); 1964 td = r8a66597_get_td(r8a66597, pipenum); 1965 if (td) 1966 urb = td->urb; 1967 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 1968 kfree(hep->hcpriv); 1969 hep->hcpriv = NULL; 1970 spin_unlock_irqrestore(&r8a66597->lock, flags); 1971 } 1972 1973 static int r8a66597_get_frame(struct usb_hcd *hcd) 1974 { 1975 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1976 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 1977 } 1978 1979 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 1980 { 1981 int chix; 1982 1983 if (udev->state == USB_STATE_CONFIGURED && 1984 udev->parent && udev->parent->devnum > 1 && 1985 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 1986 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 1987 1988 for (chix = 0; chix < udev->maxchild; chix++) { 1989 struct usb_device *childdev = udev->children[chix]; 1990 1991 if (childdev) 1992 collect_usb_address_map(childdev, map); 1993 } 1994 } 1995 1996 /* this function must be called with interrupt disabled */ 1997 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 1998 int addr) 1999 { 2000 struct r8a66597_device *dev; 2001 struct list_head *list = &r8a66597->child_device; 2002 2003 list_for_each_entry(dev, list, device_list) { 2004 if (!dev) 2005 continue; 2006 if (dev->usb_address != addr) 2007 continue; 2008 2009 return dev; 2010 } 2011 2012 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); 2013 return NULL; 2014 } 2015 2016 static void update_usb_address_map(struct r8a66597 *r8a66597, 2017 struct usb_device *root_hub, 2018 unsigned long *map) 2019 { 2020 int i, j, addr; 2021 unsigned long diff; 2022 unsigned long flags; 2023 2024 for (i = 0; i < 4; i++) { 2025 diff = r8a66597->child_connect_map[i] ^ map[i]; 2026 if (!diff) 2027 continue; 2028 2029 for (j = 0; j < 32; j++) { 2030 if (!(diff & (1 << j))) 2031 continue; 2032 2033 addr = i * 32 + j; 2034 if (map[i] & (1 << j)) 2035 set_child_connect_map(r8a66597, addr); 2036 else { 2037 struct r8a66597_device *dev; 2038 2039 spin_lock_irqsave(&r8a66597->lock, flags); 2040 dev = get_r8a66597_device(r8a66597, addr); 2041 disable_r8a66597_pipe_all(r8a66597, dev); 2042 free_usb_address(r8a66597, dev); 2043 put_child_connect_map(r8a66597, addr); 2044 spin_unlock_irqrestore(&r8a66597->lock, flags); 2045 } 2046 } 2047 } 2048 } 2049 2050 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2051 struct usb_hcd *hcd) 2052 { 2053 struct usb_bus *bus; 2054 unsigned long now_map[4]; 2055 2056 memset(now_map, 0, sizeof(now_map)); 2057 2058 list_for_each_entry(bus, &usb_bus_list, bus_list) { 2059 if (!bus->root_hub) 2060 continue; 2061 2062 if (bus->busnum != hcd->self.busnum) 2063 continue; 2064 2065 collect_usb_address_map(bus->root_hub, now_map); 2066 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2067 } 2068 } 2069 2070 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2071 { 2072 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2073 unsigned long flags; 2074 int i; 2075 2076 r8a66597_check_detect_child(r8a66597, hcd); 2077 2078 spin_lock_irqsave(&r8a66597->lock, flags); 2079 2080 *buf = 0; /* initialize (no change) */ 2081 2082 for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) { 2083 if (r8a66597->root_hub[i].port & 0xffff0000) 2084 *buf |= 1 << (i + 1); 2085 } 2086 2087 spin_unlock_irqrestore(&r8a66597->lock, flags); 2088 2089 return (*buf != 0); 2090 } 2091 2092 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2093 struct usb_hub_descriptor *desc) 2094 { 2095 desc->bDescriptorType = 0x29; 2096 desc->bHubContrCurrent = 0; 2097 desc->bNbrPorts = R8A66597_MAX_ROOT_HUB; 2098 desc->bDescLength = 9; 2099 desc->bPwrOn2PwrGood = 0; 2100 desc->wHubCharacteristics = cpu_to_le16(0x0011); 2101 desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1; 2102 desc->bitmap[1] = ~0; 2103 } 2104 2105 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 2106 u16 wIndex, char *buf, u16 wLength) 2107 { 2108 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2109 int ret; 2110 int port = (wIndex & 0x00FF) - 1; 2111 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2112 unsigned long flags; 2113 2114 ret = 0; 2115 2116 spin_lock_irqsave(&r8a66597->lock, flags); 2117 switch (typeReq) { 2118 case ClearHubFeature: 2119 case SetHubFeature: 2120 switch (wValue) { 2121 case C_HUB_OVER_CURRENT: 2122 case C_HUB_LOCAL_POWER: 2123 break; 2124 default: 2125 goto error; 2126 } 2127 break; 2128 case ClearPortFeature: 2129 if (wIndex > R8A66597_MAX_ROOT_HUB) 2130 goto error; 2131 if (wLength != 0) 2132 goto error; 2133 2134 switch (wValue) { 2135 case USB_PORT_FEAT_ENABLE: 2136 rh->port &= (1 << USB_PORT_FEAT_POWER); 2137 break; 2138 case USB_PORT_FEAT_SUSPEND: 2139 break; 2140 case USB_PORT_FEAT_POWER: 2141 r8a66597_port_power(r8a66597, port, 0); 2142 break; 2143 case USB_PORT_FEAT_C_ENABLE: 2144 case USB_PORT_FEAT_C_SUSPEND: 2145 case USB_PORT_FEAT_C_CONNECTION: 2146 case USB_PORT_FEAT_C_OVER_CURRENT: 2147 case USB_PORT_FEAT_C_RESET: 2148 break; 2149 default: 2150 goto error; 2151 } 2152 rh->port &= ~(1 << wValue); 2153 break; 2154 case GetHubDescriptor: 2155 r8a66597_hub_descriptor(r8a66597, 2156 (struct usb_hub_descriptor *)buf); 2157 break; 2158 case GetHubStatus: 2159 *buf = 0x00; 2160 break; 2161 case GetPortStatus: 2162 if (wIndex > R8A66597_MAX_ROOT_HUB) 2163 goto error; 2164 *(__le32 *)buf = cpu_to_le32(rh->port); 2165 break; 2166 case SetPortFeature: 2167 if (wIndex > R8A66597_MAX_ROOT_HUB) 2168 goto error; 2169 if (wLength != 0) 2170 goto error; 2171 2172 switch (wValue) { 2173 case USB_PORT_FEAT_SUSPEND: 2174 break; 2175 case USB_PORT_FEAT_POWER: 2176 r8a66597_port_power(r8a66597, port, 1); 2177 rh->port |= (1 << USB_PORT_FEAT_POWER); 2178 break; 2179 case USB_PORT_FEAT_RESET: { 2180 struct r8a66597_device *dev = rh->dev; 2181 2182 rh->port |= (1 << USB_PORT_FEAT_RESET); 2183 2184 disable_r8a66597_pipe_all(r8a66597, dev); 2185 free_usb_address(r8a66597, dev); 2186 2187 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2188 get_dvstctr_reg(port)); 2189 mod_timer(&r8a66597->rh_timer, 2190 jiffies + msecs_to_jiffies(50)); 2191 } 2192 break; 2193 default: 2194 goto error; 2195 } 2196 rh->port |= 1 << wValue; 2197 break; 2198 default: 2199 error: 2200 ret = -EPIPE; 2201 break; 2202 } 2203 2204 spin_unlock_irqrestore(&r8a66597->lock, flags); 2205 return ret; 2206 } 2207 2208 static struct hc_driver r8a66597_hc_driver = { 2209 .description = hcd_name, 2210 .hcd_priv_size = sizeof(struct r8a66597), 2211 .irq = r8a66597_irq, 2212 2213 /* 2214 * generic hardware linkage 2215 */ 2216 .flags = HCD_USB2, 2217 2218 .start = r8a66597_start, 2219 .stop = r8a66597_stop, 2220 2221 /* 2222 * managing i/o requests and associated device resources 2223 */ 2224 .urb_enqueue = r8a66597_urb_enqueue, 2225 .urb_dequeue = r8a66597_urb_dequeue, 2226 .endpoint_disable = r8a66597_endpoint_disable, 2227 2228 /* 2229 * periodic schedule support 2230 */ 2231 .get_frame_number = r8a66597_get_frame, 2232 2233 /* 2234 * root hub support 2235 */ 2236 .hub_status_data = r8a66597_hub_status_data, 2237 .hub_control = r8a66597_hub_control, 2238 }; 2239 2240 #if defined(CONFIG_PM) 2241 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state) 2242 { 2243 return 0; 2244 } 2245 2246 static int r8a66597_resume(struct platform_device *pdev) 2247 { 2248 return 0; 2249 } 2250 #else /* if defined(CONFIG_PM) */ 2251 #define r8a66597_suspend NULL 2252 #define r8a66597_resume NULL 2253 #endif 2254 2255 static int __init_or_module r8a66597_remove(struct platform_device *pdev) 2256 { 2257 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); 2258 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2259 2260 del_timer_sync(&r8a66597->rh_timer); 2261 usb_remove_hcd(hcd); 2262 iounmap((void *)r8a66597->reg); 2263 usb_put_hcd(hcd); 2264 return 0; 2265 } 2266 2267 #define resource_len(r) (((r)->end - (r)->start) + 1) 2268 static int __init r8a66597_probe(struct platform_device *pdev) 2269 { 2270 struct resource *res = NULL, *ires; 2271 int irq = -1; 2272 void __iomem *reg = NULL; 2273 struct usb_hcd *hcd = NULL; 2274 struct r8a66597 *r8a66597; 2275 int ret = 0; 2276 int i; 2277 unsigned long irq_trigger; 2278 2279 if (pdev->dev.dma_mask) { 2280 ret = -EINVAL; 2281 dev_err(&pdev->dev, "dma not supported\n"); 2282 goto clean_up; 2283 } 2284 2285 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, 2286 (char *)hcd_name); 2287 if (!res) { 2288 ret = -ENODEV; 2289 dev_err(&pdev->dev, "platform_get_resource_byname error.\n"); 2290 goto clean_up; 2291 } 2292 2293 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2294 if (!ires) { 2295 ret = -ENODEV; 2296 dev_err(&pdev->dev, 2297 "platform_get_resource IORESOURCE_IRQ error.\n"); 2298 goto clean_up; 2299 } 2300 2301 irq = ires->start; 2302 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 2303 2304 reg = ioremap(res->start, resource_len(res)); 2305 if (reg == NULL) { 2306 ret = -ENOMEM; 2307 dev_err(&pdev->dev, "ioremap error.\n"); 2308 goto clean_up; 2309 } 2310 2311 /* initialize hcd */ 2312 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2313 if (!hcd) { 2314 ret = -ENOMEM; 2315 dev_err(&pdev->dev, "Failed to create hcd\n"); 2316 goto clean_up; 2317 } 2318 r8a66597 = hcd_to_r8a66597(hcd); 2319 memset(r8a66597, 0, sizeof(struct r8a66597)); 2320 dev_set_drvdata(&pdev->dev, r8a66597); 2321 2322 spin_lock_init(&r8a66597->lock); 2323 init_timer(&r8a66597->rh_timer); 2324 r8a66597->rh_timer.function = r8a66597_timer; 2325 r8a66597->rh_timer.data = (unsigned long)r8a66597; 2326 r8a66597->reg = (unsigned long)reg; 2327 2328 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2329 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2330 init_timer(&r8a66597->td_timer[i]); 2331 r8a66597->td_timer[i].function = r8a66597_td_timer; 2332 r8a66597->td_timer[i].data = (unsigned long)r8a66597; 2333 setup_timer(&r8a66597->interval_timer[i], 2334 r8a66597_interval_timer, 2335 (unsigned long)r8a66597); 2336 } 2337 INIT_LIST_HEAD(&r8a66597->child_device); 2338 2339 hcd->rsrc_start = res->start; 2340 2341 /* irq_sense setting on cmdline takes precedence over resource 2342 * settings, so the introduction of irqflags in IRQ resourse 2343 * won't disturb existing setups */ 2344 switch (irq_sense) { 2345 case INTL: 2346 irq_trigger = IRQF_TRIGGER_LOW; 2347 break; 2348 case 0: 2349 irq_trigger = IRQF_TRIGGER_FALLING; 2350 break; 2351 case 0xff: 2352 if (irq_trigger) 2353 irq_sense = (irq_trigger & IRQF_TRIGGER_LOW) ? 2354 INTL : 0; 2355 else { 2356 irq_sense = INTL; 2357 irq_trigger = IRQF_TRIGGER_LOW; 2358 } 2359 break; 2360 default: 2361 dev_err(&pdev->dev, "Unknown irq_sense value.\n"); 2362 } 2363 2364 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger); 2365 if (ret != 0) { 2366 dev_err(&pdev->dev, "Failed to add hcd\n"); 2367 goto clean_up; 2368 } 2369 2370 return 0; 2371 2372 clean_up: 2373 if (reg) 2374 iounmap(reg); 2375 2376 return ret; 2377 } 2378 2379 static struct platform_driver r8a66597_driver = { 2380 .probe = r8a66597_probe, 2381 .remove = r8a66597_remove, 2382 .suspend = r8a66597_suspend, 2383 .resume = r8a66597_resume, 2384 .driver = { 2385 .name = (char *) hcd_name, 2386 .owner = THIS_MODULE, 2387 }, 2388 }; 2389 2390 static int __init r8a66597_init(void) 2391 { 2392 if (usb_disabled()) 2393 return -ENODEV; 2394 2395 printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name, 2396 DRIVER_VERSION); 2397 return platform_driver_register(&r8a66597_driver); 2398 } 2399 module_init(r8a66597_init); 2400 2401 static void __exit r8a66597_cleanup(void) 2402 { 2403 platform_driver_unregister(&r8a66597_driver); 2404 } 2405 module_exit(r8a66597_cleanup); 2406 2407