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 "29 May 2007" 50 51 static const char hcd_name[] = "r8a66597_hcd"; 52 53 /* module parameters */ 54 static unsigned short clock = XTAL12; 55 module_param(clock, ushort, 0644); 56 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 " 57 "(default=0)"); 58 59 static unsigned short vif = LDRV; 60 module_param(vif, ushort, 0644); 61 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)"); 62 63 static unsigned short endian; 64 module_param(endian, ushort, 0644); 65 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)"); 66 67 static unsigned short irq_sense = INTL; 68 module_param(irq_sense, ushort, 0644); 69 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 " 70 "(default=32)"); 71 72 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 73 static int r8a66597_get_frame(struct usb_hcd *hcd); 74 75 /* this function must be called with interrupt disabled */ 76 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 77 unsigned long reg) 78 { 79 u16 tmp; 80 81 tmp = r8a66597_read(r8a66597, INTENB0); 82 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 83 r8a66597_bset(r8a66597, 1 << pipenum, reg); 84 r8a66597_write(r8a66597, tmp, INTENB0); 85 } 86 87 /* this function must be called with interrupt disabled */ 88 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 89 unsigned long reg) 90 { 91 u16 tmp; 92 93 tmp = r8a66597_read(r8a66597, INTENB0); 94 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 95 r8a66597_bclr(r8a66597, 1 << pipenum, reg); 96 r8a66597_write(r8a66597, tmp, INTENB0); 97 } 98 99 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, 100 u16 usbspd, u8 upphub, u8 hubport, int port) 101 { 102 u16 val; 103 unsigned long devadd_reg = get_devadd_addr(r8a66597_address); 104 105 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); 106 r8a66597_write(r8a66597, val, devadd_reg); 107 } 108 109 static int enable_controller(struct r8a66597 *r8a66597) 110 { 111 u16 tmp; 112 int i = 0; 113 114 do { 115 r8a66597_write(r8a66597, USBE, SYSCFG0); 116 tmp = r8a66597_read(r8a66597, SYSCFG0); 117 if (i++ > 1000) { 118 err("register access fail."); 119 return -ENXIO; 120 } 121 } while ((tmp & USBE) != USBE); 122 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 123 r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0); 124 125 i = 0; 126 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 127 do { 128 msleep(1); 129 tmp = r8a66597_read(r8a66597, SYSCFG0); 130 if (i++ > 500) { 131 err("register access fail."); 132 return -ENXIO; 133 } 134 } while ((tmp & SCKE) != SCKE); 135 136 r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0); 137 r8a66597_bset(r8a66597, DRPD, SYSCFG1); 138 139 r8a66597_bset(r8a66597, vif & LDRV, PINCFG); 140 r8a66597_bset(r8a66597, HSE, SYSCFG0); 141 r8a66597_bset(r8a66597, HSE, SYSCFG1); 142 r8a66597_bset(r8a66597, USBE, SYSCFG0); 143 144 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 145 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); 146 r8a66597_bset(r8a66597, BRDY0, BRDYENB); 147 r8a66597_bset(r8a66597, BEMP0, BEMPENB); 148 149 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG); 150 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG); 151 152 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); 153 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); 154 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); 155 156 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); 157 158 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); 159 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 160 r8a66597_bset(r8a66597, ATTCHE, INTENB1); 161 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 162 r8a66597_bset(r8a66597, ATTCHE, INTENB2); 163 164 return 0; 165 } 166 167 static void disable_controller(struct r8a66597 *r8a66597) 168 { 169 u16 tmp; 170 171 r8a66597_write(r8a66597, 0, INTENB0); 172 r8a66597_write(r8a66597, 0, INTENB1); 173 r8a66597_write(r8a66597, 0, INTENB2); 174 r8a66597_write(r8a66597, 0, INTSTS0); 175 r8a66597_write(r8a66597, 0, INTSTS1); 176 r8a66597_write(r8a66597, 0, INTSTS2); 177 178 r8a66597_port_power(r8a66597, 0, 0); 179 r8a66597_port_power(r8a66597, 1, 0); 180 181 do { 182 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; 183 udelay(640); 184 } while (tmp == EDGESTS); 185 186 r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0); 187 r8a66597_bclr(r8a66597, DRPD, SYSCFG1); 188 r8a66597_bclr(r8a66597, HSE, SYSCFG0); 189 r8a66597_bclr(r8a66597, HSE, SYSCFG1); 190 191 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 192 udelay(1); 193 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 194 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 195 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 196 } 197 198 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, 199 struct usb_device *udev) 200 { 201 struct r8a66597_device *dev; 202 203 if (udev->parent && udev->parent->devnum != 1) 204 udev = udev->parent; 205 206 dev = dev_get_drvdata(&udev->dev); 207 if (dev) 208 return dev->address; 209 else 210 return 0; 211 } 212 213 static int is_child_device(char *devpath) 214 { 215 return (devpath[2] ? 1 : 0); 216 } 217 218 static int is_hub_limit(char *devpath) 219 { 220 return ((strlen(devpath) >= 4) ? 1 : 0); 221 } 222 223 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port) 224 { 225 if (root_port) { 226 *root_port = (devpath[0] & 0x0F) - 1; 227 if (*root_port >= R8A66597_MAX_ROOT_HUB) 228 err("illegal root port number"); 229 } 230 if (hub_port) 231 *hub_port = devpath[2] & 0x0F; 232 } 233 234 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) 235 { 236 u16 usbspd = 0; 237 238 switch (speed) { 239 case USB_SPEED_LOW: 240 usbspd = LSMODE; 241 break; 242 case USB_SPEED_FULL: 243 usbspd = FSMODE; 244 break; 245 case USB_SPEED_HIGH: 246 usbspd = HSMODE; 247 break; 248 default: 249 err("unknown speed"); 250 break; 251 } 252 253 return usbspd; 254 } 255 256 static void set_child_connect_map(struct r8a66597 *r8a66597, int address) 257 { 258 int idx; 259 260 idx = address / 32; 261 r8a66597->child_connect_map[idx] |= 1 << (address % 32); 262 } 263 264 static void put_child_connect_map(struct r8a66597 *r8a66597, int address) 265 { 266 int idx; 267 268 idx = address / 32; 269 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); 270 } 271 272 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) 273 { 274 u16 pipenum = pipe->info.pipenum; 275 unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; 276 unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; 277 unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; 278 279 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ 280 dma_ch = R8A66597_PIPE_NO_DMA; 281 282 pipe->fifoaddr = fifoaddr[dma_ch]; 283 pipe->fifosel = fifosel[dma_ch]; 284 pipe->fifoctr = fifoctr[dma_ch]; 285 286 if (pipenum == 0) 287 pipe->pipectr = DCPCTR; 288 else 289 pipe->pipectr = get_pipectr_addr(pipenum); 290 291 if (check_bulk_or_isoc(pipenum)) { 292 pipe->pipetre = get_pipetre_addr(pipenum); 293 pipe->pipetrn = get_pipetrn_addr(pipenum); 294 } else { 295 pipe->pipetre = 0; 296 pipe->pipetrn = 0; 297 } 298 } 299 300 static struct r8a66597_device * 301 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) 302 { 303 if (usb_pipedevice(urb->pipe) == 0) 304 return &r8a66597->device0; 305 306 return dev_get_drvdata(&urb->dev->dev); 307 } 308 309 static int make_r8a66597_device(struct r8a66597 *r8a66597, 310 struct urb *urb, u8 addr) 311 { 312 struct r8a66597_device *dev; 313 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 314 315 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); 316 if (dev == NULL) 317 return -ENOMEM; 318 319 dev_set_drvdata(&urb->dev->dev, dev); 320 dev->udev = urb->dev; 321 dev->address = addr; 322 dev->usb_address = usb_address; 323 dev->state = USB_STATE_ADDRESS; 324 dev->ep_in_toggle = 0; 325 dev->ep_out_toggle = 0; 326 INIT_LIST_HEAD(&dev->device_list); 327 list_add_tail(&dev->device_list, &r8a66597->child_device); 328 329 get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port); 330 if (!is_child_device(urb->dev->devpath)) 331 r8a66597->root_hub[dev->root_port].dev = dev; 332 333 set_devadd_reg(r8a66597, dev->address, 334 get_r8a66597_usb_speed(urb->dev->speed), 335 get_parent_r8a66597_address(r8a66597, urb->dev), 336 dev->hub_port, dev->root_port); 337 338 return 0; 339 } 340 341 /* this function must be called with interrupt disabled */ 342 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) 343 { 344 u8 addr; /* R8A66597's address */ 345 struct r8a66597_device *dev; 346 347 if (is_hub_limit(urb->dev->devpath)) { 348 err("Externel hub limit reached."); 349 return 0; 350 } 351 352 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 353 if (dev && dev->state >= USB_STATE_ADDRESS) 354 return dev->address; 355 356 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { 357 if (r8a66597->address_map & (1 << addr)) 358 continue; 359 360 dbg("alloc_address: r8a66597_addr=%d", addr); 361 r8a66597->address_map |= 1 << addr; 362 363 if (make_r8a66597_device(r8a66597, urb, addr) < 0) 364 return 0; 365 366 return addr; 367 } 368 369 err("cannot communicate with a USB device more than 10.(%x)", 370 r8a66597->address_map); 371 372 return 0; 373 } 374 375 /* this function must be called with interrupt disabled */ 376 static void free_usb_address(struct r8a66597 *r8a66597, 377 struct r8a66597_device *dev) 378 { 379 int port; 380 381 if (!dev) 382 return; 383 384 dbg("free_addr: addr=%d", dev->address); 385 386 dev->state = USB_STATE_DEFAULT; 387 r8a66597->address_map &= ~(1 << dev->address); 388 dev->address = 0; 389 dev_set_drvdata(&dev->udev->dev, NULL); 390 list_del(&dev->device_list); 391 kfree(dev); 392 393 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) { 394 if (r8a66597->root_hub[port].dev == dev) { 395 r8a66597->root_hub[port].dev = NULL; 396 break; 397 } 398 } 399 } 400 401 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, 402 u16 mask, u16 loop) 403 { 404 u16 tmp; 405 int i = 0; 406 407 do { 408 tmp = r8a66597_read(r8a66597, reg); 409 if (i++ > 1000000) { 410 err("register%lx, loop %x is timeout", reg, loop); 411 break; 412 } 413 ndelay(1); 414 } while ((tmp & mask) != loop); 415 } 416 417 /* this function must be called with interrupt disabled */ 418 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 419 { 420 u16 tmp; 421 422 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 423 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ 424 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 425 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); 426 } 427 428 /* this function must be called with interrupt disabled */ 429 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 430 { 431 u16 tmp; 432 433 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 434 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ 435 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); 436 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 437 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); 438 } 439 440 /* this function must be called with interrupt disabled */ 441 static void clear_all_buffer(struct r8a66597 *r8a66597, 442 struct r8a66597_pipe *pipe) 443 { 444 u16 tmp; 445 446 if (!pipe || pipe->info.pipenum == 0) 447 return; 448 449 pipe_stop(r8a66597, pipe); 450 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 451 tmp = r8a66597_read(r8a66597, pipe->pipectr); 452 tmp = r8a66597_read(r8a66597, pipe->pipectr); 453 tmp = r8a66597_read(r8a66597, pipe->pipectr); 454 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 455 } 456 457 /* this function must be called with interrupt disabled */ 458 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 459 struct r8a66597_pipe *pipe, int toggle) 460 { 461 if (toggle) 462 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 463 else 464 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 465 } 466 467 /* this function must be called with interrupt disabled */ 468 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 469 { 470 r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL); 471 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 472 } 473 474 /* this function must be called with interrupt disabled */ 475 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 476 struct r8a66597_pipe *pipe) 477 { 478 cfifo_change(r8a66597, 0); 479 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL); 480 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL); 481 482 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE, 483 pipe->fifosel); 484 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 485 } 486 487 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 488 { 489 struct r8a66597_pipe *pipe = hep->hcpriv; 490 491 if (usb_pipeendpoint(urb->pipe) == 0) 492 return 0; 493 else 494 return pipe->info.pipenum; 495 } 496 497 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 498 { 499 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 500 501 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 502 } 503 504 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 505 int urb_pipe) 506 { 507 if (!dev) 508 return NULL; 509 510 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 511 } 512 513 /* this function must be called with interrupt disabled */ 514 static void pipe_toggle_set(struct r8a66597 *r8a66597, 515 struct r8a66597_pipe *pipe, 516 struct urb *urb, int set) 517 { 518 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 519 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 520 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 521 522 if (!toggle) 523 return; 524 525 if (set) 526 *toggle |= 1 << endpoint; 527 else 528 *toggle &= ~(1 << endpoint); 529 } 530 531 /* this function must be called with interrupt disabled */ 532 static void pipe_toggle_save(struct r8a66597 *r8a66597, 533 struct r8a66597_pipe *pipe, 534 struct urb *urb) 535 { 536 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 537 pipe_toggle_set(r8a66597, pipe, urb, 1); 538 else 539 pipe_toggle_set(r8a66597, pipe, urb, 0); 540 } 541 542 /* this function must be called with interrupt disabled */ 543 static void pipe_toggle_restore(struct r8a66597 *r8a66597, 544 struct r8a66597_pipe *pipe, 545 struct urb *urb) 546 { 547 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 548 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 549 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 550 551 if (!toggle) 552 return; 553 554 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 555 } 556 557 /* this function must be called with interrupt disabled */ 558 static void pipe_buffer_setting(struct r8a66597 *r8a66597, 559 struct r8a66597_pipe_info *info) 560 { 561 u16 val = 0; 562 563 if (info->pipenum == 0) 564 return; 565 566 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 567 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 568 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 569 if (!info->dir_in) 570 val |= R8A66597_DIR; 571 if (info->type == R8A66597_BULK && info->dir_in) 572 val |= R8A66597_DBLB | R8A66597_SHTNAK; 573 val |= info->type | info->epnum; 574 r8a66597_write(r8a66597, val, PIPECFG); 575 576 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 577 PIPEBUF); 578 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 579 PIPEMAXP); 580 if (info->interval) 581 info->interval--; 582 r8a66597_write(r8a66597, info->interval, PIPEPERI); 583 } 584 585 586 587 /* this function must be called with interrupt disabled */ 588 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 589 { 590 struct r8a66597_pipe_info *info; 591 struct urb *urb = td->urb; 592 593 if (td->pipenum > 0) { 594 info = &td->pipe->info; 595 cfifo_change(r8a66597, 0); 596 pipe_buffer_setting(r8a66597, info); 597 598 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 599 usb_pipeout(urb->pipe)) && 600 !usb_pipecontrol(urb->pipe)) { 601 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 602 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 603 clear_all_buffer(r8a66597, td->pipe); 604 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 605 usb_pipeout(urb->pipe), 1); 606 } 607 pipe_toggle_restore(r8a66597, td->pipe, urb); 608 } 609 } 610 611 /* this function must be called with interrupt disabled */ 612 static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 613 struct usb_endpoint_descriptor *ep) 614 { 615 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 616 617 memset(array, 0, sizeof(array)); 618 switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 619 case USB_ENDPOINT_XFER_BULK: 620 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 621 array[i++] = 4; 622 else { 623 array[i++] = 3; 624 array[i++] = 5; 625 } 626 break; 627 case USB_ENDPOINT_XFER_INT: 628 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { 629 array[i++] = 6; 630 array[i++] = 7; 631 array[i++] = 8; 632 } else 633 array[i++] = 9; 634 break; 635 case USB_ENDPOINT_XFER_ISOC: 636 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 637 array[i++] = 2; 638 else 639 array[i++] = 1; 640 break; 641 default: 642 err("Illegal type"); 643 return 0; 644 } 645 646 i = 1; 647 min = array[0]; 648 while (array[i] != 0) { 649 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 650 min = array[i]; 651 i++; 652 } 653 654 return min; 655 } 656 657 static u16 get_r8a66597_type(__u8 type) 658 { 659 u16 r8a66597_type; 660 661 switch (type) { 662 case USB_ENDPOINT_XFER_BULK: 663 r8a66597_type = R8A66597_BULK; 664 break; 665 case USB_ENDPOINT_XFER_INT: 666 r8a66597_type = R8A66597_INT; 667 break; 668 case USB_ENDPOINT_XFER_ISOC: 669 r8a66597_type = R8A66597_ISO; 670 break; 671 default: 672 err("Illegal type"); 673 r8a66597_type = 0x0000; 674 break; 675 } 676 677 return r8a66597_type; 678 } 679 680 static u16 get_bufnum(u16 pipenum) 681 { 682 u16 bufnum = 0; 683 684 if (pipenum == 0) 685 bufnum = 0; 686 else if (check_bulk_or_isoc(pipenum)) 687 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 688 else if (check_interrupt(pipenum)) 689 bufnum = 4 + (pipenum - 6); 690 else 691 err("Illegal pipenum (%d)", pipenum); 692 693 return bufnum; 694 } 695 696 static u16 get_buf_bsize(u16 pipenum) 697 { 698 u16 buf_bsize = 0; 699 700 if (pipenum == 0) 701 buf_bsize = 3; 702 else if (check_bulk_or_isoc(pipenum)) 703 buf_bsize = R8A66597_BUF_BSIZE - 1; 704 else if (check_interrupt(pipenum)) 705 buf_bsize = 0; 706 else 707 err("Illegal pipenum (%d)", pipenum); 708 709 return buf_bsize; 710 } 711 712 /* this function must be called with interrupt disabled */ 713 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 714 struct r8a66597_device *dev, 715 struct r8a66597_pipe *pipe, 716 struct urb *urb) 717 { 718 int i; 719 struct r8a66597_pipe_info *info = &pipe->info; 720 721 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 722 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 723 if ((r8a66597->dma_map & (1 << i)) != 0) 724 continue; 725 726 info("address %d, EndpointAddress 0x%02x use DMA FIFO", 727 usb_pipedevice(urb->pipe), 728 info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum 729 : info->epnum); 730 731 r8a66597->dma_map |= 1 << i; 732 dev->dma_map |= 1 << i; 733 set_pipe_reg_addr(pipe, i); 734 735 cfifo_change(r8a66597, 0); 736 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, 737 MBW | CURPIPE, pipe->fifosel); 738 739 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 740 pipe->info.pipenum); 741 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 742 break; 743 } 744 } 745 } 746 747 /* this function must be called with interrupt disabled */ 748 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 749 struct usb_host_endpoint *hep, 750 struct r8a66597_pipe_info *info) 751 { 752 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 753 struct r8a66597_pipe *pipe = hep->hcpriv; 754 755 dbg("enable_pipe:"); 756 757 pipe->info = *info; 758 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 759 r8a66597->pipe_cnt[pipe->info.pipenum]++; 760 dev->pipe_cnt[pipe->info.pipenum]++; 761 762 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 763 } 764 765 /* this function must be called with interrupt disabled */ 766 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 767 { 768 struct r8a66597_td *td, *next; 769 struct urb *urb; 770 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 771 772 if (list_empty(list)) 773 return; 774 775 list_for_each_entry_safe(td, next, list, queue) { 776 if (!td) 777 continue; 778 if (td->address != address) 779 continue; 780 781 urb = td->urb; 782 list_del(&td->queue); 783 kfree(td); 784 785 if (urb) { 786 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), 787 urb); 788 789 spin_unlock(&r8a66597->lock); 790 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, 791 -ENODEV); 792 spin_lock(&r8a66597->lock); 793 } 794 break; 795 } 796 } 797 798 /* this function must be called with interrupt disabled */ 799 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 800 struct r8a66597_device *dev) 801 { 802 int check_ep0 = 0; 803 u16 pipenum; 804 805 if (!dev) 806 return; 807 808 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 809 if (!dev->pipe_cnt[pipenum]) 810 continue; 811 812 if (!check_ep0) { 813 check_ep0 = 1; 814 force_dequeue(r8a66597, 0, dev->address); 815 } 816 817 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 818 dev->pipe_cnt[pipenum] = 0; 819 force_dequeue(r8a66597, pipenum, dev->address); 820 } 821 822 dbg("disable_pipe"); 823 824 r8a66597->dma_map &= ~(dev->dma_map); 825 dev->dma_map = 0; 826 } 827 828 /* this function must be called with interrupt disabled */ 829 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 830 struct usb_host_endpoint *hep, 831 struct usb_endpoint_descriptor *ep) 832 { 833 struct r8a66597_pipe_info info; 834 835 info.pipenum = get_empty_pipenum(r8a66597, ep); 836 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 837 info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; 838 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize); 839 info.type = get_r8a66597_type(ep->bmAttributes 840 & USB_ENDPOINT_XFERTYPE_MASK); 841 info.bufnum = get_bufnum(info.pipenum); 842 info.buf_bsize = get_buf_bsize(info.pipenum); 843 info.interval = ep->bInterval; 844 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 845 info.dir_in = 1; 846 else 847 info.dir_in = 0; 848 849 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 850 } 851 852 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 853 { 854 struct r8a66597_device *dev; 855 856 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 857 dev->state = USB_STATE_CONFIGURED; 858 } 859 860 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 861 u16 pipenum) 862 { 863 if (pipenum == 0 && usb_pipeout(urb->pipe)) 864 enable_irq_empty(r8a66597, pipenum); 865 else 866 enable_irq_ready(r8a66597, pipenum); 867 868 if (!usb_pipeisoc(urb->pipe)) 869 enable_irq_nrdy(r8a66597, pipenum); 870 } 871 872 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 873 { 874 disable_irq_ready(r8a66597, pipenum); 875 disable_irq_nrdy(r8a66597, pipenum); 876 } 877 878 /* this function must be called with interrupt disabled */ 879 static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port) 880 { 881 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION) 882 | (1 << USB_PORT_FEAT_C_CONNECTION); 883 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 884 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 885 } 886 887 /* this function must be called with interrupt disabled */ 888 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 889 { 890 u16 speed = get_rh_usb_speed(r8a66597, port); 891 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 892 893 if (speed == HSMODE) 894 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED); 895 else if (speed == LSMODE) 896 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED); 897 898 rh->port &= ~(1 << USB_PORT_FEAT_RESET); 899 rh->port |= 1 << USB_PORT_FEAT_ENABLE; 900 } 901 902 /* this function must be called with interrupt disabled */ 903 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 904 { 905 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 906 907 r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION); 908 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION); 909 910 disable_r8a66597_pipe_all(r8a66597, dev); 911 free_usb_address(r8a66597, dev); 912 913 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 914 } 915 916 /* this function must be called with interrupt disabled */ 917 static void prepare_setup_packet(struct r8a66597 *r8a66597, 918 struct r8a66597_td *td) 919 { 920 int i; 921 u16 *p = (u16 *)td->urb->setup_packet; 922 unsigned long setup_addr = USBREQ; 923 924 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 925 DCPMAXP); 926 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 927 928 for (i = 0; i < 4; i++) { 929 r8a66597_write(r8a66597, cpu_to_le16(p[i]), setup_addr); 930 setup_addr += 2; 931 } 932 r8a66597_write(r8a66597, SUREQ, DCPCTR); 933 } 934 935 /* this function must be called with interrupt disabled */ 936 static void prepare_packet_read(struct r8a66597 *r8a66597, 937 struct r8a66597_td *td) 938 { 939 struct urb *urb = td->urb; 940 941 if (usb_pipecontrol(urb->pipe)) { 942 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 943 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 944 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 945 if (urb->actual_length == 0) { 946 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 947 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 948 } 949 pipe_irq_disable(r8a66597, td->pipenum); 950 pipe_start(r8a66597, td->pipe); 951 pipe_irq_enable(r8a66597, urb, td->pipenum); 952 } else { 953 if (urb->actual_length == 0) { 954 pipe_irq_disable(r8a66597, td->pipenum); 955 pipe_setting(r8a66597, td); 956 pipe_stop(r8a66597, td->pipe); 957 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 958 959 if (td->pipe->pipetre) { 960 r8a66597_write(r8a66597, TRCLR, 961 td->pipe->pipetre); 962 r8a66597_write(r8a66597, 963 (urb->transfer_buffer_length 964 + td->maxpacket - 1) 965 / td->maxpacket, 966 td->pipe->pipetrn); 967 r8a66597_bset(r8a66597, TRENB, 968 td->pipe->pipetre); 969 } 970 971 pipe_start(r8a66597, td->pipe); 972 pipe_irq_enable(r8a66597, urb, td->pipenum); 973 } 974 } 975 } 976 977 /* this function must be called with interrupt disabled */ 978 static void prepare_packet_write(struct r8a66597 *r8a66597, 979 struct r8a66597_td *td) 980 { 981 u16 tmp; 982 struct urb *urb = td->urb; 983 984 if (usb_pipecontrol(urb->pipe)) { 985 pipe_stop(r8a66597, td->pipe); 986 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 987 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 988 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 989 if (urb->actual_length == 0) { 990 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 991 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 992 } 993 } else { 994 if (urb->actual_length == 0) 995 pipe_setting(r8a66597, td); 996 if (td->pipe->pipetre) 997 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 998 } 999 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1000 1001 fifo_change_from_pipe(r8a66597, td->pipe); 1002 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1003 if (unlikely((tmp & FRDY) == 0)) 1004 pipe_irq_enable(r8a66597, urb, td->pipenum); 1005 else 1006 packet_write(r8a66597, td->pipenum); 1007 pipe_start(r8a66597, td->pipe); 1008 } 1009 1010 /* this function must be called with interrupt disabled */ 1011 static void prepare_status_packet(struct r8a66597 *r8a66597, 1012 struct r8a66597_td *td) 1013 { 1014 struct urb *urb = td->urb; 1015 1016 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1017 pipe_stop(r8a66597, td->pipe); 1018 1019 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1020 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1021 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1022 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1023 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1024 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1025 r8a66597_write(r8a66597, BVAL, CFIFOCTR); 1026 enable_irq_empty(r8a66597, 0); 1027 } else { 1028 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1029 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1030 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1031 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1032 enable_irq_ready(r8a66597, 0); 1033 } 1034 enable_irq_nrdy(r8a66597, 0); 1035 pipe_start(r8a66597, td->pipe); 1036 } 1037 1038 static int is_set_address(unsigned char *setup_packet) 1039 { 1040 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1041 setup_packet[1] == USB_REQ_SET_ADDRESS) 1042 return 1; 1043 else 1044 return 0; 1045 } 1046 1047 /* this function must be called with interrupt disabled */ 1048 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1049 { 1050 BUG_ON(!td); 1051 1052 switch (td->type) { 1053 case USB_PID_SETUP: 1054 if (is_set_address(td->urb->setup_packet)) { 1055 td->set_address = 1; 1056 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1057 td->urb); 1058 if (td->urb->setup_packet[2] == 0) 1059 return -EPIPE; 1060 } 1061 prepare_setup_packet(r8a66597, td); 1062 break; 1063 case USB_PID_IN: 1064 prepare_packet_read(r8a66597, td); 1065 break; 1066 case USB_PID_OUT: 1067 prepare_packet_write(r8a66597, td); 1068 break; 1069 case USB_PID_ACK: 1070 prepare_status_packet(r8a66597, td); 1071 break; 1072 default: 1073 err("invalid type."); 1074 break; 1075 } 1076 1077 return 0; 1078 } 1079 1080 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1081 { 1082 if (usb_pipeisoc(urb->pipe)) { 1083 if (urb->number_of_packets == td->iso_cnt) 1084 return 1; 1085 } 1086 1087 /* control or bulk or interrupt */ 1088 if ((urb->transfer_buffer_length <= urb->actual_length) || 1089 (td->short_packet) || (td->zero_packet)) 1090 return 1; 1091 1092 return 0; 1093 } 1094 1095 /* this function must be called with interrupt disabled */ 1096 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1097 { 1098 unsigned long time; 1099 1100 BUG_ON(!td); 1101 1102 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1103 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1104 r8a66597->timeout_map |= 1 << td->pipenum; 1105 switch (usb_pipetype(td->urb->pipe)) { 1106 case PIPE_INTERRUPT: 1107 case PIPE_ISOCHRONOUS: 1108 time = 30; 1109 break; 1110 default: 1111 time = 300; 1112 break; 1113 } 1114 1115 mod_timer(&r8a66597->td_timer[td->pipenum], 1116 jiffies + msecs_to_jiffies(time)); 1117 } 1118 } 1119 1120 /* this function must be called with interrupt disabled */ 1121 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1122 u16 pipenum, struct urb *urb, int status) 1123 __releases(r8a66597->lock) __acquires(r8a66597->lock) 1124 { 1125 int restart = 0; 1126 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1127 1128 r8a66597->timeout_map &= ~(1 << pipenum); 1129 1130 if (likely(td)) { 1131 if (td->set_address && (status != 0 || urb->unlinked)) 1132 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1133 1134 pipe_toggle_save(r8a66597, td->pipe, urb); 1135 list_del(&td->queue); 1136 kfree(td); 1137 } 1138 1139 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1140 restart = 1; 1141 1142 if (likely(urb)) { 1143 if (usb_pipeisoc(urb->pipe)) 1144 urb->start_frame = r8a66597_get_frame(hcd); 1145 1146 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 1147 spin_unlock(&r8a66597->lock); 1148 usb_hcd_giveback_urb(hcd, urb, status); 1149 spin_lock(&r8a66597->lock); 1150 } 1151 1152 if (restart) { 1153 td = r8a66597_get_td(r8a66597, pipenum); 1154 if (unlikely(!td)) 1155 return; 1156 1157 start_transfer(r8a66597, td); 1158 set_td_timer(r8a66597, td); 1159 } 1160 } 1161 1162 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1163 { 1164 u16 tmp; 1165 int rcv_len, bufsize, urb_len, size; 1166 u16 *buf; 1167 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1168 struct urb *urb; 1169 int finish = 0; 1170 int status = 0; 1171 1172 if (unlikely(!td)) 1173 return; 1174 urb = td->urb; 1175 1176 fifo_change_from_pipe(r8a66597, td->pipe); 1177 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1178 if (unlikely((tmp & FRDY) == 0)) { 1179 pipe_stop(r8a66597, td->pipe); 1180 pipe_irq_disable(r8a66597, pipenum); 1181 err("in fifo not ready (%d)", pipenum); 1182 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1183 return; 1184 } 1185 1186 /* prepare parameters */ 1187 rcv_len = tmp & DTLN; 1188 if (usb_pipeisoc(urb->pipe)) { 1189 buf = (u16 *)(urb->transfer_buffer + 1190 urb->iso_frame_desc[td->iso_cnt].offset); 1191 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1192 } else { 1193 buf = (void *)urb->transfer_buffer + urb->actual_length; 1194 urb_len = urb->transfer_buffer_length - urb->actual_length; 1195 } 1196 bufsize = min(urb_len, (int) td->maxpacket); 1197 if (rcv_len <= bufsize) { 1198 size = rcv_len; 1199 } else { 1200 size = bufsize; 1201 status = -EOVERFLOW; 1202 finish = 1; 1203 } 1204 1205 /* update parameters */ 1206 urb->actual_length += size; 1207 if (rcv_len == 0) 1208 td->zero_packet = 1; 1209 if (rcv_len < bufsize) { 1210 td->short_packet = 1; 1211 } 1212 if (usb_pipeisoc(urb->pipe)) { 1213 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1214 urb->iso_frame_desc[td->iso_cnt].status = status; 1215 td->iso_cnt++; 1216 finish = 0; 1217 } 1218 1219 /* check transfer finish */ 1220 if (finish || check_transfer_finish(td, urb)) { 1221 pipe_stop(r8a66597, td->pipe); 1222 pipe_irq_disable(r8a66597, pipenum); 1223 finish = 1; 1224 } 1225 1226 /* read fifo */ 1227 if (urb->transfer_buffer) { 1228 if (size == 0) 1229 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1230 else 1231 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1232 buf, size); 1233 } 1234 1235 if (finish && pipenum != 0) 1236 finish_request(r8a66597, td, pipenum, urb, status); 1237 } 1238 1239 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1240 { 1241 u16 tmp; 1242 int bufsize, size; 1243 u16 *buf; 1244 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1245 struct urb *urb; 1246 1247 if (unlikely(!td)) 1248 return; 1249 urb = td->urb; 1250 1251 fifo_change_from_pipe(r8a66597, td->pipe); 1252 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1253 if (unlikely((tmp & FRDY) == 0)) { 1254 pipe_stop(r8a66597, td->pipe); 1255 pipe_irq_disable(r8a66597, pipenum); 1256 err("out write fifo not ready. (%d)", pipenum); 1257 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1258 return; 1259 } 1260 1261 /* prepare parameters */ 1262 bufsize = td->maxpacket; 1263 if (usb_pipeisoc(urb->pipe)) { 1264 buf = (u16 *)(urb->transfer_buffer + 1265 urb->iso_frame_desc[td->iso_cnt].offset); 1266 size = min(bufsize, 1267 (int)urb->iso_frame_desc[td->iso_cnt].length); 1268 } else { 1269 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1270 size = min((int)bufsize, 1271 urb->transfer_buffer_length - urb->actual_length); 1272 } 1273 1274 /* write fifo */ 1275 if (pipenum > 0) 1276 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1277 if (urb->transfer_buffer) { 1278 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size); 1279 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1280 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1281 } 1282 1283 /* update parameters */ 1284 urb->actual_length += size; 1285 if (usb_pipeisoc(urb->pipe)) { 1286 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1287 urb->iso_frame_desc[td->iso_cnt].status = 0; 1288 td->iso_cnt++; 1289 } 1290 1291 /* check transfer finish */ 1292 if (check_transfer_finish(td, urb)) { 1293 disable_irq_ready(r8a66597, pipenum); 1294 enable_irq_empty(r8a66597, pipenum); 1295 if (!usb_pipeisoc(urb->pipe)) 1296 enable_irq_nrdy(r8a66597, pipenum); 1297 } else 1298 pipe_irq_enable(r8a66597, urb, pipenum); 1299 } 1300 1301 1302 static void check_next_phase(struct r8a66597 *r8a66597, int status) 1303 { 1304 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1305 struct urb *urb; 1306 u8 finish = 0; 1307 1308 if (unlikely(!td)) 1309 return; 1310 urb = td->urb; 1311 1312 switch (td->type) { 1313 case USB_PID_IN: 1314 case USB_PID_OUT: 1315 if (check_transfer_finish(td, urb)) 1316 td->type = USB_PID_ACK; 1317 break; 1318 case USB_PID_SETUP: 1319 if (urb->transfer_buffer_length == urb->actual_length) 1320 td->type = USB_PID_ACK; 1321 else if (usb_pipeout(urb->pipe)) 1322 td->type = USB_PID_OUT; 1323 else 1324 td->type = USB_PID_IN; 1325 break; 1326 case USB_PID_ACK: 1327 finish = 1; 1328 break; 1329 } 1330 1331 if (finish || status != 0 || urb->unlinked) 1332 finish_request(r8a66597, td, 0, urb, status); 1333 else 1334 start_transfer(r8a66597, td); 1335 } 1336 1337 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1338 { 1339 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1340 1341 if (td) { 1342 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1343 1344 if (pid == PID_NAK) 1345 return -ECONNRESET; 1346 else 1347 return -EPIPE; 1348 } 1349 return 0; 1350 } 1351 1352 static void irq_pipe_ready(struct r8a66597 *r8a66597) 1353 { 1354 u16 check; 1355 u16 pipenum; 1356 u16 mask; 1357 struct r8a66597_td *td; 1358 1359 mask = r8a66597_read(r8a66597, BRDYSTS) 1360 & r8a66597_read(r8a66597, BRDYENB); 1361 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1362 if (mask & BRDY0) { 1363 td = r8a66597_get_td(r8a66597, 0); 1364 if (td && td->type == USB_PID_IN) 1365 packet_read(r8a66597, 0); 1366 else 1367 pipe_irq_disable(r8a66597, 0); 1368 check_next_phase(r8a66597, 0); 1369 } 1370 1371 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1372 check = 1 << pipenum; 1373 if (mask & check) { 1374 td = r8a66597_get_td(r8a66597, pipenum); 1375 if (unlikely(!td)) 1376 continue; 1377 1378 if (td->type == USB_PID_IN) 1379 packet_read(r8a66597, pipenum); 1380 else if (td->type == USB_PID_OUT) 1381 packet_write(r8a66597, pipenum); 1382 } 1383 } 1384 } 1385 1386 static void irq_pipe_empty(struct r8a66597 *r8a66597) 1387 { 1388 u16 tmp; 1389 u16 check; 1390 u16 pipenum; 1391 u16 mask; 1392 struct r8a66597_td *td; 1393 1394 mask = r8a66597_read(r8a66597, BEMPSTS) 1395 & r8a66597_read(r8a66597, BEMPENB); 1396 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1397 if (mask & BEMP0) { 1398 cfifo_change(r8a66597, 0); 1399 td = r8a66597_get_td(r8a66597, 0); 1400 if (td && td->type != USB_PID_OUT) 1401 disable_irq_empty(r8a66597, 0); 1402 check_next_phase(r8a66597, 0); 1403 } 1404 1405 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1406 check = 1 << pipenum; 1407 if (mask & check) { 1408 struct r8a66597_td *td; 1409 td = r8a66597_get_td(r8a66597, pipenum); 1410 if (unlikely(!td)) 1411 continue; 1412 1413 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1414 if ((tmp & INBUFM) == 0) { 1415 disable_irq_empty(r8a66597, pipenum); 1416 pipe_irq_disable(r8a66597, pipenum); 1417 finish_request(r8a66597, td, pipenum, td->urb, 1418 0); 1419 } 1420 } 1421 } 1422 } 1423 1424 static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1425 { 1426 u16 check; 1427 u16 pipenum; 1428 u16 mask; 1429 int status; 1430 1431 mask = r8a66597_read(r8a66597, NRDYSTS) 1432 & r8a66597_read(r8a66597, NRDYENB); 1433 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1434 if (mask & NRDY0) { 1435 cfifo_change(r8a66597, 0); 1436 status = get_urb_error(r8a66597, 0); 1437 pipe_irq_disable(r8a66597, 0); 1438 check_next_phase(r8a66597, status); 1439 } 1440 1441 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1442 check = 1 << pipenum; 1443 if (mask & check) { 1444 struct r8a66597_td *td; 1445 td = r8a66597_get_td(r8a66597, pipenum); 1446 if (unlikely(!td)) 1447 continue; 1448 1449 status = get_urb_error(r8a66597, pipenum); 1450 pipe_irq_disable(r8a66597, pipenum); 1451 pipe_stop(r8a66597, td->pipe); 1452 finish_request(r8a66597, td, pipenum, td->urb, status); 1453 } 1454 } 1455 } 1456 1457 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port) 1458 { 1459 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1460 1461 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1462 rh->scount = R8A66597_MAX_SAMPLING; 1463 mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50)); 1464 } 1465 1466 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1467 { 1468 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1469 u16 intsts0, intsts1, intsts2; 1470 u16 intenb0, intenb1, intenb2; 1471 u16 mask0, mask1, mask2; 1472 int status; 1473 1474 spin_lock(&r8a66597->lock); 1475 1476 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1477 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1478 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1479 intenb0 = r8a66597_read(r8a66597, INTENB0); 1480 intenb1 = r8a66597_read(r8a66597, INTENB1); 1481 intenb2 = r8a66597_read(r8a66597, INTENB2); 1482 1483 mask2 = intsts2 & intenb2; 1484 mask1 = intsts1 & intenb1; 1485 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1486 if (mask2) { 1487 if (mask2 & ATTCH) { 1488 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1489 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1490 1491 /* start usb bus sampling */ 1492 start_root_hub_sampling(r8a66597, 1); 1493 } 1494 if (mask2 & DTCH) { 1495 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1496 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1497 r8a66597_usb_disconnect(r8a66597, 1); 1498 } 1499 } 1500 1501 if (mask1) { 1502 if (mask1 & ATTCH) { 1503 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1504 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1505 1506 /* start usb bus sampling */ 1507 start_root_hub_sampling(r8a66597, 0); 1508 } 1509 if (mask1 & DTCH) { 1510 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1511 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1512 r8a66597_usb_disconnect(r8a66597, 0); 1513 } 1514 if (mask1 & SIGN) { 1515 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1516 status = get_urb_error(r8a66597, 0); 1517 check_next_phase(r8a66597, status); 1518 } 1519 if (mask1 & SACK) { 1520 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1521 check_next_phase(r8a66597, 0); 1522 } 1523 } 1524 if (mask0) { 1525 if (mask0 & BRDY) 1526 irq_pipe_ready(r8a66597); 1527 if (mask0 & BEMP) 1528 irq_pipe_empty(r8a66597); 1529 if (mask0 & NRDY) 1530 irq_pipe_nrdy(r8a66597); 1531 } 1532 1533 spin_unlock(&r8a66597->lock); 1534 return IRQ_HANDLED; 1535 } 1536 1537 /* this function must be called with interrupt disabled */ 1538 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1539 { 1540 u16 tmp; 1541 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1542 1543 if (rh->port & (1 << USB_PORT_FEAT_RESET)) { 1544 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1545 1546 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1547 if ((tmp & USBRST) == USBRST) { 1548 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1549 dvstctr_reg); 1550 mod_timer(&r8a66597->rh_timer, 1551 jiffies + msecs_to_jiffies(50)); 1552 } else 1553 r8a66597_usb_connect(r8a66597, port); 1554 } 1555 1556 if (rh->scount > 0) { 1557 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1558 if (tmp == rh->old_syssts) { 1559 rh->scount--; 1560 if (rh->scount == 0) { 1561 if (tmp == FS_JSTS) { 1562 r8a66597_bset(r8a66597, HSE, 1563 get_syscfg_reg(port)); 1564 r8a66597_usb_preconnect(r8a66597, port); 1565 } else if (tmp == LS_JSTS) { 1566 r8a66597_bclr(r8a66597, HSE, 1567 get_syscfg_reg(port)); 1568 r8a66597_usb_preconnect(r8a66597, port); 1569 } else if (tmp == SE0) 1570 r8a66597_bset(r8a66597, ATTCHE, 1571 get_intenb_reg(port)); 1572 } else { 1573 mod_timer(&r8a66597->rh_timer, 1574 jiffies + msecs_to_jiffies(50)); 1575 } 1576 } else { 1577 rh->scount = R8A66597_MAX_SAMPLING; 1578 rh->old_syssts = tmp; 1579 mod_timer(&r8a66597->rh_timer, 1580 jiffies + msecs_to_jiffies(50)); 1581 } 1582 } 1583 } 1584 1585 static void r8a66597_td_timer(unsigned long _r8a66597) 1586 { 1587 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1588 unsigned long flags; 1589 u16 pipenum; 1590 struct r8a66597_td *td, *new_td = NULL; 1591 struct r8a66597_pipe *pipe; 1592 1593 spin_lock_irqsave(&r8a66597->lock, flags); 1594 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1595 if (!(r8a66597->timeout_map & (1 << pipenum))) 1596 continue; 1597 if (timer_pending(&r8a66597->td_timer[pipenum])) 1598 continue; 1599 1600 td = r8a66597_get_td(r8a66597, pipenum); 1601 if (!td) { 1602 r8a66597->timeout_map &= ~(1 << pipenum); 1603 continue; 1604 } 1605 1606 if (td->urb->actual_length) { 1607 set_td_timer(r8a66597, td); 1608 break; 1609 } 1610 1611 pipe = td->pipe; 1612 pipe_stop(r8a66597, pipe); 1613 1614 new_td = td; 1615 do { 1616 list_move_tail(&new_td->queue, 1617 &r8a66597->pipe_queue[pipenum]); 1618 new_td = r8a66597_get_td(r8a66597, pipenum); 1619 if (!new_td) { 1620 new_td = td; 1621 break; 1622 } 1623 } while (td != new_td && td->address == new_td->address); 1624 1625 start_transfer(r8a66597, new_td); 1626 1627 if (td == new_td) 1628 r8a66597->timeout_map &= ~(1 << pipenum); 1629 else 1630 set_td_timer(r8a66597, new_td); 1631 break; 1632 } 1633 spin_unlock_irqrestore(&r8a66597->lock, flags); 1634 } 1635 1636 static void r8a66597_timer(unsigned long _r8a66597) 1637 { 1638 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1639 unsigned long flags; 1640 1641 spin_lock_irqsave(&r8a66597->lock, flags); 1642 1643 r8a66597_root_hub_control(r8a66597, 0); 1644 r8a66597_root_hub_control(r8a66597, 1); 1645 1646 spin_unlock_irqrestore(&r8a66597->lock, flags); 1647 } 1648 1649 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1650 { 1651 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1652 1653 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1654 (urb->dev->state == USB_STATE_CONFIGURED)) 1655 return 1; 1656 else 1657 return 0; 1658 } 1659 1660 static int r8a66597_start(struct usb_hcd *hcd) 1661 { 1662 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1663 1664 hcd->state = HC_STATE_RUNNING; 1665 return enable_controller(r8a66597); 1666 } 1667 1668 static void r8a66597_stop(struct usb_hcd *hcd) 1669 { 1670 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1671 1672 disable_controller(r8a66597); 1673 } 1674 1675 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1676 { 1677 unsigned int usb_address = usb_pipedevice(urb->pipe); 1678 u16 root_port, hub_port; 1679 1680 if (usb_address == 0) { 1681 get_port_number(urb->dev->devpath, 1682 &root_port, &hub_port); 1683 set_devadd_reg(r8a66597, 0, 1684 get_r8a66597_usb_speed(urb->dev->speed), 1685 get_parent_r8a66597_address(r8a66597, urb->dev), 1686 hub_port, root_port); 1687 } 1688 } 1689 1690 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1691 struct urb *urb, 1692 struct usb_host_endpoint *hep) 1693 { 1694 struct r8a66597_td *td; 1695 u16 pipenum; 1696 1697 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1698 if (td == NULL) 1699 return NULL; 1700 1701 pipenum = r8a66597_get_pipenum(urb, hep); 1702 td->pipenum = pipenum; 1703 td->pipe = hep->hcpriv; 1704 td->urb = urb; 1705 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1706 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1707 !usb_pipein(urb->pipe)); 1708 if (usb_pipecontrol(urb->pipe)) 1709 td->type = USB_PID_SETUP; 1710 else if (usb_pipein(urb->pipe)) 1711 td->type = USB_PID_IN; 1712 else 1713 td->type = USB_PID_OUT; 1714 INIT_LIST_HEAD(&td->queue); 1715 1716 return td; 1717 } 1718 1719 static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1720 struct urb *urb, 1721 gfp_t mem_flags) 1722 { 1723 struct usb_host_endpoint *hep = urb->ep; 1724 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1725 struct r8a66597_td *td = NULL; 1726 int ret, request = 0; 1727 unsigned long flags; 1728 1729 spin_lock_irqsave(&r8a66597->lock, flags); 1730 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1731 ret = -ENODEV; 1732 goto error_not_linked; 1733 } 1734 1735 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1736 if (ret) 1737 goto error_not_linked; 1738 1739 if (!hep->hcpriv) { 1740 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1741 GFP_ATOMIC); 1742 if (!hep->hcpriv) { 1743 ret = -ENOMEM; 1744 goto error; 1745 } 1746 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1747 if (usb_pipeendpoint(urb->pipe)) 1748 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1749 } 1750 1751 if (unlikely(check_pipe_config(r8a66597, urb))) 1752 init_pipe_config(r8a66597, urb); 1753 1754 set_address_zero(r8a66597, urb); 1755 td = r8a66597_make_td(r8a66597, urb, hep); 1756 if (td == NULL) { 1757 ret = -ENOMEM; 1758 goto error; 1759 } 1760 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1761 request = 1; 1762 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1763 urb->hcpriv = td; 1764 1765 if (request) { 1766 ret = start_transfer(r8a66597, td); 1767 if (ret < 0) { 1768 list_del(&td->queue); 1769 kfree(td); 1770 } 1771 } else 1772 set_td_timer(r8a66597, td); 1773 1774 error: 1775 if (ret) 1776 usb_hcd_unlink_urb_from_ep(hcd, urb); 1777 error_not_linked: 1778 spin_unlock_irqrestore(&r8a66597->lock, flags); 1779 return ret; 1780 } 1781 1782 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1783 int status) 1784 { 1785 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1786 struct r8a66597_td *td; 1787 unsigned long flags; 1788 int rc; 1789 1790 spin_lock_irqsave(&r8a66597->lock, flags); 1791 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1792 if (rc) 1793 goto done; 1794 1795 if (urb->hcpriv) { 1796 td = urb->hcpriv; 1797 pipe_stop(r8a66597, td->pipe); 1798 pipe_irq_disable(r8a66597, td->pipenum); 1799 disable_irq_empty(r8a66597, td->pipenum); 1800 finish_request(r8a66597, td, td->pipenum, urb, status); 1801 } 1802 done: 1803 spin_unlock_irqrestore(&r8a66597->lock, flags); 1804 return rc; 1805 } 1806 1807 static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1808 struct usb_host_endpoint *hep) 1809 { 1810 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1811 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1812 struct r8a66597_td *td; 1813 struct urb *urb = NULL; 1814 u16 pipenum; 1815 unsigned long flags; 1816 1817 if (pipe == NULL) 1818 return; 1819 pipenum = pipe->info.pipenum; 1820 1821 if (pipenum == 0) { 1822 kfree(hep->hcpriv); 1823 hep->hcpriv = NULL; 1824 return; 1825 } 1826 1827 spin_lock_irqsave(&r8a66597->lock, flags); 1828 pipe_stop(r8a66597, pipe); 1829 pipe_irq_disable(r8a66597, pipenum); 1830 disable_irq_empty(r8a66597, pipenum); 1831 td = r8a66597_get_td(r8a66597, pipenum); 1832 if (td) 1833 urb = td->urb; 1834 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 1835 kfree(hep->hcpriv); 1836 hep->hcpriv = NULL; 1837 spin_unlock_irqrestore(&r8a66597->lock, flags); 1838 } 1839 1840 static int r8a66597_get_frame(struct usb_hcd *hcd) 1841 { 1842 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1843 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 1844 } 1845 1846 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 1847 { 1848 int chix; 1849 1850 if (udev->state == USB_STATE_CONFIGURED && 1851 udev->parent && udev->parent->devnum > 1 && 1852 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 1853 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 1854 1855 for (chix = 0; chix < udev->maxchild; chix++) { 1856 struct usb_device *childdev = udev->children[chix]; 1857 1858 if (childdev) 1859 collect_usb_address_map(childdev, map); 1860 } 1861 } 1862 1863 /* this function must be called with interrupt disabled */ 1864 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 1865 int addr) 1866 { 1867 struct r8a66597_device *dev; 1868 struct list_head *list = &r8a66597->child_device; 1869 1870 list_for_each_entry(dev, list, device_list) { 1871 if (!dev) 1872 continue; 1873 if (dev->usb_address != addr) 1874 continue; 1875 1876 return dev; 1877 } 1878 1879 err("get_r8a66597_device fail.(%d)\n", addr); 1880 return NULL; 1881 } 1882 1883 static void update_usb_address_map(struct r8a66597 *r8a66597, 1884 struct usb_device *root_hub, 1885 unsigned long *map) 1886 { 1887 int i, j, addr; 1888 unsigned long diff; 1889 unsigned long flags; 1890 1891 for (i = 0; i < 4; i++) { 1892 diff = r8a66597->child_connect_map[i] ^ map[i]; 1893 if (!diff) 1894 continue; 1895 1896 for (j = 0; j < 32; j++) { 1897 if (!(diff & (1 << j))) 1898 continue; 1899 1900 addr = i * 32 + j; 1901 if (map[i] & (1 << j)) 1902 set_child_connect_map(r8a66597, addr); 1903 else { 1904 struct r8a66597_device *dev; 1905 1906 spin_lock_irqsave(&r8a66597->lock, flags); 1907 dev = get_r8a66597_device(r8a66597, addr); 1908 disable_r8a66597_pipe_all(r8a66597, dev); 1909 free_usb_address(r8a66597, dev); 1910 put_child_connect_map(r8a66597, addr); 1911 spin_unlock_irqrestore(&r8a66597->lock, flags); 1912 } 1913 } 1914 } 1915 } 1916 1917 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 1918 struct usb_hcd *hcd) 1919 { 1920 struct usb_bus *bus; 1921 unsigned long now_map[4]; 1922 1923 memset(now_map, 0, sizeof(now_map)); 1924 1925 list_for_each_entry(bus, &usb_bus_list, bus_list) { 1926 if (!bus->root_hub) 1927 continue; 1928 1929 if (bus->busnum != hcd->self.busnum) 1930 continue; 1931 1932 collect_usb_address_map(bus->root_hub, now_map); 1933 update_usb_address_map(r8a66597, bus->root_hub, now_map); 1934 } 1935 } 1936 1937 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 1938 { 1939 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1940 unsigned long flags; 1941 int i; 1942 1943 r8a66597_check_detect_child(r8a66597, hcd); 1944 1945 spin_lock_irqsave(&r8a66597->lock, flags); 1946 1947 *buf = 0; /* initialize (no change) */ 1948 1949 for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) { 1950 if (r8a66597->root_hub[i].port & 0xffff0000) 1951 *buf |= 1 << (i + 1); 1952 } 1953 1954 spin_unlock_irqrestore(&r8a66597->lock, flags); 1955 1956 return (*buf != 0); 1957 } 1958 1959 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 1960 struct usb_hub_descriptor *desc) 1961 { 1962 desc->bDescriptorType = 0x29; 1963 desc->bHubContrCurrent = 0; 1964 desc->bNbrPorts = R8A66597_MAX_ROOT_HUB; 1965 desc->bDescLength = 9; 1966 desc->bPwrOn2PwrGood = 0; 1967 desc->wHubCharacteristics = cpu_to_le16(0x0011); 1968 desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1; 1969 desc->bitmap[1] = ~0; 1970 } 1971 1972 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 1973 u16 wIndex, char *buf, u16 wLength) 1974 { 1975 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1976 int ret; 1977 int port = (wIndex & 0x00FF) - 1; 1978 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1979 unsigned long flags; 1980 1981 ret = 0; 1982 1983 spin_lock_irqsave(&r8a66597->lock, flags); 1984 switch (typeReq) { 1985 case ClearHubFeature: 1986 case SetHubFeature: 1987 switch (wValue) { 1988 case C_HUB_OVER_CURRENT: 1989 case C_HUB_LOCAL_POWER: 1990 break; 1991 default: 1992 goto error; 1993 } 1994 break; 1995 case ClearPortFeature: 1996 if (wIndex > R8A66597_MAX_ROOT_HUB) 1997 goto error; 1998 if (wLength != 0) 1999 goto error; 2000 2001 switch (wValue) { 2002 case USB_PORT_FEAT_ENABLE: 2003 rh->port &= (1 << USB_PORT_FEAT_POWER); 2004 break; 2005 case USB_PORT_FEAT_SUSPEND: 2006 break; 2007 case USB_PORT_FEAT_POWER: 2008 r8a66597_port_power(r8a66597, port, 0); 2009 break; 2010 case USB_PORT_FEAT_C_ENABLE: 2011 case USB_PORT_FEAT_C_SUSPEND: 2012 case USB_PORT_FEAT_C_CONNECTION: 2013 case USB_PORT_FEAT_C_OVER_CURRENT: 2014 case USB_PORT_FEAT_C_RESET: 2015 break; 2016 default: 2017 goto error; 2018 } 2019 rh->port &= ~(1 << wValue); 2020 break; 2021 case GetHubDescriptor: 2022 r8a66597_hub_descriptor(r8a66597, 2023 (struct usb_hub_descriptor *)buf); 2024 break; 2025 case GetHubStatus: 2026 *buf = 0x00; 2027 break; 2028 case GetPortStatus: 2029 if (wIndex > R8A66597_MAX_ROOT_HUB) 2030 goto error; 2031 *(u32 *)buf = cpu_to_le32(rh->port); 2032 break; 2033 case SetPortFeature: 2034 if (wIndex > R8A66597_MAX_ROOT_HUB) 2035 goto error; 2036 if (wLength != 0) 2037 goto error; 2038 2039 switch (wValue) { 2040 case USB_PORT_FEAT_SUSPEND: 2041 break; 2042 case USB_PORT_FEAT_POWER: 2043 r8a66597_port_power(r8a66597, port, 1); 2044 rh->port |= (1 << USB_PORT_FEAT_POWER); 2045 break; 2046 case USB_PORT_FEAT_RESET: { 2047 struct r8a66597_device *dev = rh->dev; 2048 2049 rh->port |= (1 << USB_PORT_FEAT_RESET); 2050 2051 disable_r8a66597_pipe_all(r8a66597, dev); 2052 free_usb_address(r8a66597, dev); 2053 2054 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2055 get_dvstctr_reg(port)); 2056 mod_timer(&r8a66597->rh_timer, 2057 jiffies + msecs_to_jiffies(50)); 2058 } 2059 break; 2060 default: 2061 goto error; 2062 } 2063 rh->port |= 1 << wValue; 2064 break; 2065 default: 2066 error: 2067 ret = -EPIPE; 2068 break; 2069 } 2070 2071 spin_unlock_irqrestore(&r8a66597->lock, flags); 2072 return ret; 2073 } 2074 2075 static struct hc_driver r8a66597_hc_driver = { 2076 .description = hcd_name, 2077 .hcd_priv_size = sizeof(struct r8a66597), 2078 .irq = r8a66597_irq, 2079 2080 /* 2081 * generic hardware linkage 2082 */ 2083 .flags = HCD_USB2, 2084 2085 .start = r8a66597_start, 2086 .stop = r8a66597_stop, 2087 2088 /* 2089 * managing i/o requests and associated device resources 2090 */ 2091 .urb_enqueue = r8a66597_urb_enqueue, 2092 .urb_dequeue = r8a66597_urb_dequeue, 2093 .endpoint_disable = r8a66597_endpoint_disable, 2094 2095 /* 2096 * periodic schedule support 2097 */ 2098 .get_frame_number = r8a66597_get_frame, 2099 2100 /* 2101 * root hub support 2102 */ 2103 .hub_status_data = r8a66597_hub_status_data, 2104 .hub_control = r8a66597_hub_control, 2105 }; 2106 2107 #if defined(CONFIG_PM) 2108 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state) 2109 { 2110 pdev->dev.power.power_state = state; 2111 return 0; 2112 } 2113 2114 static int r8a66597_resume(struct platform_device *pdev) 2115 { 2116 pdev->dev.power.power_state = PMSG_ON; 2117 return 0; 2118 } 2119 #else /* if defined(CONFIG_PM) */ 2120 #define r8a66597_suspend NULL 2121 #define r8a66597_resume NULL 2122 #endif 2123 2124 static int __init_or_module r8a66597_remove(struct platform_device *pdev) 2125 { 2126 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); 2127 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2128 2129 del_timer_sync(&r8a66597->rh_timer); 2130 usb_remove_hcd(hcd); 2131 iounmap((void *)r8a66597->reg); 2132 usb_put_hcd(hcd); 2133 return 0; 2134 } 2135 2136 #define resource_len(r) (((r)->end - (r)->start) + 1) 2137 static int __init r8a66597_probe(struct platform_device *pdev) 2138 { 2139 struct resource *res = NULL; 2140 int irq = -1; 2141 void __iomem *reg = NULL; 2142 struct usb_hcd *hcd = NULL; 2143 struct r8a66597 *r8a66597; 2144 int ret = 0; 2145 int i; 2146 2147 if (pdev->dev.dma_mask) { 2148 ret = -EINVAL; 2149 err("dma not support"); 2150 goto clean_up; 2151 } 2152 2153 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, 2154 (char *)hcd_name); 2155 if (!res) { 2156 ret = -ENODEV; 2157 err("platform_get_resource_byname error."); 2158 goto clean_up; 2159 } 2160 2161 irq = platform_get_irq(pdev, 0); 2162 if (irq < 0) { 2163 ret = -ENODEV; 2164 err("platform_get_irq error."); 2165 goto clean_up; 2166 } 2167 2168 reg = ioremap(res->start, resource_len(res)); 2169 if (reg == NULL) { 2170 ret = -ENOMEM; 2171 err("ioremap error."); 2172 goto clean_up; 2173 } 2174 2175 /* initialize hcd */ 2176 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2177 if (!hcd) { 2178 ret = -ENOMEM; 2179 err("Failed to create hcd"); 2180 goto clean_up; 2181 } 2182 r8a66597 = hcd_to_r8a66597(hcd); 2183 memset(r8a66597, 0, sizeof(struct r8a66597)); 2184 dev_set_drvdata(&pdev->dev, r8a66597); 2185 2186 spin_lock_init(&r8a66597->lock); 2187 init_timer(&r8a66597->rh_timer); 2188 r8a66597->rh_timer.function = r8a66597_timer; 2189 r8a66597->rh_timer.data = (unsigned long)r8a66597; 2190 r8a66597->reg = (unsigned long)reg; 2191 2192 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2193 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2194 init_timer(&r8a66597->td_timer[i]); 2195 r8a66597->td_timer[i].function = r8a66597_td_timer; 2196 r8a66597->td_timer[i].data = (unsigned long)r8a66597; 2197 } 2198 INIT_LIST_HEAD(&r8a66597->child_device); 2199 2200 hcd->rsrc_start = res->start; 2201 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); 2202 if (ret != 0) { 2203 err("Failed to add hcd"); 2204 goto clean_up; 2205 } 2206 2207 return 0; 2208 2209 clean_up: 2210 if (reg) 2211 iounmap(reg); 2212 2213 return ret; 2214 } 2215 2216 static struct platform_driver r8a66597_driver = { 2217 .probe = r8a66597_probe, 2218 .remove = r8a66597_remove, 2219 .suspend = r8a66597_suspend, 2220 .resume = r8a66597_resume, 2221 .driver = { 2222 .name = (char *) hcd_name, 2223 .owner = THIS_MODULE, 2224 }, 2225 }; 2226 2227 static int __init r8a66597_init(void) 2228 { 2229 if (usb_disabled()) 2230 return -ENODEV; 2231 2232 info("driver %s, %s", hcd_name, DRIVER_VERSION); 2233 return platform_driver_register(&r8a66597_driver); 2234 } 2235 module_init(r8a66597_init); 2236 2237 static void __exit r8a66597_cleanup(void) 2238 { 2239 platform_driver_unregister(&r8a66597_driver); 2240 } 2241 module_exit(r8a66597_cleanup); 2242 2243