1 /* 2 * URB OHCI HCD (Host Controller Driver) for USB on the AT91RM9200 and PCI bus. 3 * 4 * Interrupt support is added. Now, it has been tested 5 * on ULI1575 chip and works well with USB keyboard. 6 * 7 * (C) Copyright 2007 8 * Zhang Wei, Freescale Semiconductor, Inc. <wei.zhang@freescale.com> 9 * 10 * (C) Copyright 2003 11 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de> 12 * 13 * Note: Much of this code has been derived from Linux 2.4 14 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> 15 * (C) Copyright 2000-2002 David Brownell 16 * 17 * Modified for the MP2USB by (C) Copyright 2005 Eric Benard 18 * ebenard@eukrea.com - based on s3c24x0's driver 19 * 20 * SPDX-License-Identifier: GPL-2.0+ 21 */ 22 /* 23 * IMPORTANT NOTES 24 * 1 - Read doc/README.generic_usb_ohci 25 * 2 - this driver is intended for use with USB Mass Storage Devices 26 * (BBB) and USB keyboard. There is NO support for Isochronous pipes! 27 * 2 - when running on a PQFP208 AT91RM9200, define CONFIG_AT91C_PQFP_UHPBUG 28 * to activate workaround for bug #41 or this driver will NOT work! 29 */ 30 31 #include <common.h> 32 #include <asm/byteorder.h> 33 34 #if defined(CONFIG_PCI_OHCI) 35 # include <pci.h> 36 #if !defined(CONFIG_PCI_OHCI_DEVNO) 37 #define CONFIG_PCI_OHCI_DEVNO 0 38 #endif 39 #endif 40 41 #include <malloc.h> 42 #include <usb.h> 43 44 #include "ohci.h" 45 46 #ifdef CONFIG_AT91RM9200 47 #include <asm/arch/hardware.h> /* needed for AT91_USB_HOST_BASE */ 48 #endif 49 50 #if defined(CONFIG_ARM920T) || \ 51 defined(CONFIG_S3C24X0) || \ 52 defined(CONFIG_440EP) || \ 53 defined(CONFIG_PCI_OHCI) || \ 54 defined(CONFIG_MPC5200) || \ 55 defined(CONFIG_SYS_OHCI_USE_NPS) 56 # define OHCI_USE_NPS /* force NoPowerSwitching mode */ 57 #endif 58 59 #undef OHCI_VERBOSE_DEBUG /* not always helpful */ 60 #undef DEBUG 61 #undef SHOW_INFO 62 #undef OHCI_FILL_TRACE 63 64 /* For initializing controller (mask in an HCFS mode too) */ 65 #define OHCI_CONTROL_INIT \ 66 (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE 67 68 #define min_t(type, x, y) \ 69 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) 70 71 #ifdef CONFIG_PCI_OHCI 72 static struct pci_device_id ohci_pci_ids[] = { 73 {0x10b9, 0x5237}, /* ULI1575 PCI OHCI module ids */ 74 {0x1033, 0x0035}, /* NEC PCI OHCI module ids */ 75 {0x1131, 0x1561}, /* Philips 1561 PCI OHCI module ids */ 76 /* Please add supported PCI OHCI controller ids here */ 77 {0, 0} 78 }; 79 #endif 80 81 #ifdef CONFIG_PCI_EHCI_DEVNO 82 static struct pci_device_id ehci_pci_ids[] = { 83 {0x1131, 0x1562}, /* Philips 1562 PCI EHCI module ids */ 84 /* Please add supported PCI EHCI controller ids here */ 85 {0, 0} 86 }; 87 #endif 88 89 #ifdef DEBUG 90 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg) 91 #else 92 #define dbg(format, arg...) do {} while (0) 93 #endif /* DEBUG */ 94 #define err(format, arg...) printf("ERROR: " format "\n", ## arg) 95 #ifdef SHOW_INFO 96 #define info(format, arg...) printf("INFO: " format "\n", ## arg) 97 #else 98 #define info(format, arg...) do {} while (0) 99 #endif 100 101 #ifdef CONFIG_SYS_OHCI_BE_CONTROLLER 102 # define m16_swap(x) cpu_to_be16(x) 103 # define m32_swap(x) cpu_to_be32(x) 104 #else 105 # define m16_swap(x) cpu_to_le16(x) 106 # define m32_swap(x) cpu_to_le32(x) 107 #endif /* CONFIG_SYS_OHCI_BE_CONTROLLER */ 108 109 /* global ohci_t */ 110 static ohci_t gohci; 111 /* this must be aligned to a 256 byte boundary */ 112 struct ohci_hcca ghcca[1]; 113 /* a pointer to the aligned storage */ 114 struct ohci_hcca *phcca; 115 /* this allocates EDs for all possible endpoints */ 116 struct ohci_device ohci_dev; 117 /* device which was disconnected */ 118 struct usb_device *devgone; 119 120 static inline u32 roothub_a(struct ohci *hc) 121 { return ohci_readl(&hc->regs->roothub.a); } 122 static inline u32 roothub_b(struct ohci *hc) 123 { return ohci_readl(&hc->regs->roothub.b); } 124 static inline u32 roothub_status(struct ohci *hc) 125 { return ohci_readl(&hc->regs->roothub.status); } 126 static inline u32 roothub_portstatus(struct ohci *hc, int i) 127 { return ohci_readl(&hc->regs->roothub.portstatus[i]); } 128 129 /* forward declaration */ 130 static int hc_interrupt(void); 131 static void td_submit_job(struct usb_device *dev, unsigned long pipe, 132 void *buffer, int transfer_len, 133 struct devrequest *setup, urb_priv_t *urb, 134 int interval); 135 136 /*-------------------------------------------------------------------------* 137 * URB support functions 138 *-------------------------------------------------------------------------*/ 139 140 /* free HCD-private data associated with this URB */ 141 142 static void urb_free_priv(urb_priv_t *urb) 143 { 144 int i; 145 int last; 146 struct td *td; 147 148 last = urb->length - 1; 149 if (last >= 0) { 150 for (i = 0; i <= last; i++) { 151 td = urb->td[i]; 152 if (td) { 153 td->usb_dev = NULL; 154 urb->td[i] = NULL; 155 } 156 } 157 } 158 free(urb); 159 } 160 161 /*-------------------------------------------------------------------------*/ 162 163 #ifdef DEBUG 164 static int sohci_get_current_frame_number(struct usb_device *dev); 165 166 /* debug| print the main components of an URB 167 * small: 0) header + data packets 1) just header */ 168 169 static void pkt_print(urb_priv_t *purb, struct usb_device *dev, 170 unsigned long pipe, void *buffer, int transfer_len, 171 struct devrequest *setup, char *str, int small) 172 { 173 dbg("%s URB:[%4x] dev:%2lu,ep:%2lu-%c,type:%s,len:%d/%d stat:%#lx", 174 str, 175 sohci_get_current_frame_number(dev), 176 usb_pipedevice(pipe), 177 usb_pipeendpoint(pipe), 178 usb_pipeout(pipe)? 'O': 'I', 179 usb_pipetype(pipe) < 2 ? \ 180 (usb_pipeint(pipe)? "INTR": "ISOC"): \ 181 (usb_pipecontrol(pipe)? "CTRL": "BULK"), 182 (purb ? purb->actual_length : 0), 183 transfer_len, dev->status); 184 #ifdef OHCI_VERBOSE_DEBUG 185 if (!small) { 186 int i, len; 187 188 if (usb_pipecontrol(pipe)) { 189 printf(__FILE__ ": cmd(8):"); 190 for (i = 0; i < 8 ; i++) 191 printf(" %02x", ((__u8 *) setup) [i]); 192 printf("\n"); 193 } 194 if (transfer_len > 0 && buffer) { 195 printf(__FILE__ ": data(%d/%d):", 196 (purb ? purb->actual_length : 0), 197 transfer_len); 198 len = usb_pipeout(pipe)? transfer_len: 199 (purb ? purb->actual_length : 0); 200 for (i = 0; i < 16 && i < len; i++) 201 printf(" %02x", ((__u8 *) buffer) [i]); 202 printf("%s\n", i < len? "...": ""); 203 } 204 } 205 #endif 206 } 207 208 /* just for debugging; prints non-empty branches of the int ed tree 209 * inclusive iso eds */ 210 void ep_print_int_eds(ohci_t *ohci, char *str) 211 { 212 int i, j; 213 __u32 *ed_p; 214 for (i = 0; i < 32; i++) { 215 j = 5; 216 ed_p = &(ohci->hcca->int_table [i]); 217 if (*ed_p == 0) 218 continue; 219 printf(__FILE__ ": %s branch int %2d(%2x):", str, i, i); 220 while (*ed_p != 0 && j--) { 221 ed_t *ed = (ed_t *)m32_swap(ed_p); 222 printf(" ed: %4x;", ed->hwINFO); 223 ed_p = &ed->hwNextED; 224 } 225 printf("\n"); 226 } 227 } 228 229 static void ohci_dump_intr_mask(char *label, __u32 mask) 230 { 231 dbg("%s: 0x%08x%s%s%s%s%s%s%s%s%s", 232 label, 233 mask, 234 (mask & OHCI_INTR_MIE) ? " MIE" : "", 235 (mask & OHCI_INTR_OC) ? " OC" : "", 236 (mask & OHCI_INTR_RHSC) ? " RHSC" : "", 237 (mask & OHCI_INTR_FNO) ? " FNO" : "", 238 (mask & OHCI_INTR_UE) ? " UE" : "", 239 (mask & OHCI_INTR_RD) ? " RD" : "", 240 (mask & OHCI_INTR_SF) ? " SF" : "", 241 (mask & OHCI_INTR_WDH) ? " WDH" : "", 242 (mask & OHCI_INTR_SO) ? " SO" : "" 243 ); 244 } 245 246 static void maybe_print_eds(char *label, __u32 value) 247 { 248 ed_t *edp = (ed_t *)value; 249 250 if (value) { 251 dbg("%s %08x", label, value); 252 dbg("%08x", edp->hwINFO); 253 dbg("%08x", edp->hwTailP); 254 dbg("%08x", edp->hwHeadP); 255 dbg("%08x", edp->hwNextED); 256 } 257 } 258 259 static char *hcfs2string(int state) 260 { 261 switch (state) { 262 case OHCI_USB_RESET: return "reset"; 263 case OHCI_USB_RESUME: return "resume"; 264 case OHCI_USB_OPER: return "operational"; 265 case OHCI_USB_SUSPEND: return "suspend"; 266 } 267 return "?"; 268 } 269 270 /* dump control and status registers */ 271 static void ohci_dump_status(ohci_t *controller) 272 { 273 struct ohci_regs *regs = controller->regs; 274 __u32 temp; 275 276 temp = ohci_readl(®s->revision) & 0xff; 277 if (temp != 0x10) 278 dbg("spec %d.%d", (temp >> 4), (temp & 0x0f)); 279 280 temp = ohci_readl(®s->control); 281 dbg("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp, 282 (temp & OHCI_CTRL_RWE) ? " RWE" : "", 283 (temp & OHCI_CTRL_RWC) ? " RWC" : "", 284 (temp & OHCI_CTRL_IR) ? " IR" : "", 285 hcfs2string(temp & OHCI_CTRL_HCFS), 286 (temp & OHCI_CTRL_BLE) ? " BLE" : "", 287 (temp & OHCI_CTRL_CLE) ? " CLE" : "", 288 (temp & OHCI_CTRL_IE) ? " IE" : "", 289 (temp & OHCI_CTRL_PLE) ? " PLE" : "", 290 temp & OHCI_CTRL_CBSR 291 ); 292 293 temp = ohci_readl(®s->cmdstatus); 294 dbg("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp, 295 (temp & OHCI_SOC) >> 16, 296 (temp & OHCI_OCR) ? " OCR" : "", 297 (temp & OHCI_BLF) ? " BLF" : "", 298 (temp & OHCI_CLF) ? " CLF" : "", 299 (temp & OHCI_HCR) ? " HCR" : "" 300 ); 301 302 ohci_dump_intr_mask("intrstatus", ohci_readl(®s->intrstatus)); 303 ohci_dump_intr_mask("intrenable", ohci_readl(®s->intrenable)); 304 305 maybe_print_eds("ed_periodcurrent", 306 ohci_readl(®s->ed_periodcurrent)); 307 308 maybe_print_eds("ed_controlhead", ohci_readl(®s->ed_controlhead)); 309 maybe_print_eds("ed_controlcurrent", 310 ohci_readl(®s->ed_controlcurrent)); 311 312 maybe_print_eds("ed_bulkhead", ohci_readl(®s->ed_bulkhead)); 313 maybe_print_eds("ed_bulkcurrent", ohci_readl(®s->ed_bulkcurrent)); 314 315 maybe_print_eds("donehead", ohci_readl(®s->donehead)); 316 } 317 318 static void ohci_dump_roothub(ohci_t *controller, int verbose) 319 { 320 __u32 temp, ndp, i; 321 322 temp = roothub_a(controller); 323 ndp = (temp & RH_A_NDP); 324 #ifdef CONFIG_AT91C_PQFP_UHPBUG 325 ndp = (ndp == 2) ? 1:0; 326 #endif 327 if (verbose) { 328 dbg("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp, 329 ((temp & RH_A_POTPGT) >> 24) & 0xff, 330 (temp & RH_A_NOCP) ? " NOCP" : "", 331 (temp & RH_A_OCPM) ? " OCPM" : "", 332 (temp & RH_A_DT) ? " DT" : "", 333 (temp & RH_A_NPS) ? " NPS" : "", 334 (temp & RH_A_PSM) ? " PSM" : "", 335 ndp 336 ); 337 temp = roothub_b(controller); 338 dbg("roothub.b: %08x PPCM=%04x DR=%04x", 339 temp, 340 (temp & RH_B_PPCM) >> 16, 341 (temp & RH_B_DR) 342 ); 343 temp = roothub_status(controller); 344 dbg("roothub.status: %08x%s%s%s%s%s%s", 345 temp, 346 (temp & RH_HS_CRWE) ? " CRWE" : "", 347 (temp & RH_HS_OCIC) ? " OCIC" : "", 348 (temp & RH_HS_LPSC) ? " LPSC" : "", 349 (temp & RH_HS_DRWE) ? " DRWE" : "", 350 (temp & RH_HS_OCI) ? " OCI" : "", 351 (temp & RH_HS_LPS) ? " LPS" : "" 352 ); 353 } 354 355 for (i = 0; i < ndp; i++) { 356 temp = roothub_portstatus(controller, i); 357 dbg("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s", 358 i, 359 temp, 360 (temp & RH_PS_PRSC) ? " PRSC" : "", 361 (temp & RH_PS_OCIC) ? " OCIC" : "", 362 (temp & RH_PS_PSSC) ? " PSSC" : "", 363 (temp & RH_PS_PESC) ? " PESC" : "", 364 (temp & RH_PS_CSC) ? " CSC" : "", 365 366 (temp & RH_PS_LSDA) ? " LSDA" : "", 367 (temp & RH_PS_PPS) ? " PPS" : "", 368 (temp & RH_PS_PRS) ? " PRS" : "", 369 (temp & RH_PS_POCI) ? " POCI" : "", 370 (temp & RH_PS_PSS) ? " PSS" : "", 371 372 (temp & RH_PS_PES) ? " PES" : "", 373 (temp & RH_PS_CCS) ? " CCS" : "" 374 ); 375 } 376 } 377 378 static void ohci_dump(ohci_t *controller, int verbose) 379 { 380 dbg("OHCI controller usb-%s state", controller->slot_name); 381 382 /* dumps some of the state we know about */ 383 ohci_dump_status(controller); 384 if (verbose) 385 ep_print_int_eds(controller, "hcca"); 386 dbg("hcca frame #%04x", controller->hcca->frame_no); 387 ohci_dump_roothub(controller, 1); 388 } 389 #endif /* DEBUG */ 390 391 /*-------------------------------------------------------------------------* 392 * Interface functions (URB) 393 *-------------------------------------------------------------------------*/ 394 395 /* get a transfer request */ 396 397 int sohci_submit_job(urb_priv_t *urb, struct devrequest *setup) 398 { 399 ohci_t *ohci; 400 ed_t *ed; 401 urb_priv_t *purb_priv = urb; 402 int i, size = 0; 403 struct usb_device *dev = urb->dev; 404 unsigned long pipe = urb->pipe; 405 void *buffer = urb->transfer_buffer; 406 int transfer_len = urb->transfer_buffer_length; 407 int interval = urb->interval; 408 409 ohci = &gohci; 410 411 /* when controller's hung, permit only roothub cleanup attempts 412 * such as powering down ports */ 413 if (ohci->disabled) { 414 err("sohci_submit_job: EPIPE"); 415 return -1; 416 } 417 418 /* we're about to begin a new transaction here so mark the 419 * URB unfinished */ 420 urb->finished = 0; 421 422 /* every endpoint has a ed, locate and fill it */ 423 ed = ep_add_ed(dev, pipe, interval, 1); 424 if (!ed) { 425 err("sohci_submit_job: ENOMEM"); 426 return -1; 427 } 428 429 /* for the private part of the URB we need the number of TDs (size) */ 430 switch (usb_pipetype(pipe)) { 431 case PIPE_BULK: /* one TD for every 4096 Byte */ 432 size = (transfer_len - 1) / 4096 + 1; 433 break; 434 case PIPE_CONTROL:/* 1 TD for setup, 1 for ACK and 1 for every 4096 B */ 435 size = (transfer_len == 0)? 2: 436 (transfer_len - 1) / 4096 + 3; 437 break; 438 case PIPE_INTERRUPT: /* 1 TD */ 439 size = 1; 440 break; 441 } 442 443 ed->purb = urb; 444 445 if (size >= (N_URB_TD - 1)) { 446 err("need %d TDs, only have %d", size, N_URB_TD); 447 return -1; 448 } 449 purb_priv->pipe = pipe; 450 451 /* fill the private part of the URB */ 452 purb_priv->length = size; 453 purb_priv->ed = ed; 454 purb_priv->actual_length = 0; 455 456 /* allocate the TDs */ 457 /* note that td[0] was allocated in ep_add_ed */ 458 for (i = 0; i < size; i++) { 459 purb_priv->td[i] = td_alloc(dev); 460 if (!purb_priv->td[i]) { 461 purb_priv->length = i; 462 urb_free_priv(purb_priv); 463 err("sohci_submit_job: ENOMEM"); 464 return -1; 465 } 466 } 467 468 if (ed->state == ED_NEW || (ed->state & ED_DEL)) { 469 urb_free_priv(purb_priv); 470 err("sohci_submit_job: EINVAL"); 471 return -1; 472 } 473 474 /* link the ed into a chain if is not already */ 475 if (ed->state != ED_OPER) 476 ep_link(ohci, ed); 477 478 /* fill the TDs and link it to the ed */ 479 td_submit_job(dev, pipe, buffer, transfer_len, 480 setup, purb_priv, interval); 481 482 return 0; 483 } 484 485 static inline int sohci_return_job(struct ohci *hc, urb_priv_t *urb) 486 { 487 struct ohci_regs *regs = hc->regs; 488 489 switch (usb_pipetype(urb->pipe)) { 490 case PIPE_INTERRUPT: 491 /* implicitly requeued */ 492 if (urb->dev->irq_handle && 493 (urb->dev->irq_act_len = urb->actual_length)) { 494 ohci_writel(OHCI_INTR_WDH, ®s->intrenable); 495 ohci_readl(®s->intrenable); /* PCI posting flush */ 496 urb->dev->irq_handle(urb->dev); 497 ohci_writel(OHCI_INTR_WDH, ®s->intrdisable); 498 ohci_readl(®s->intrdisable); /* PCI posting flush */ 499 } 500 urb->actual_length = 0; 501 td_submit_job( 502 urb->dev, 503 urb->pipe, 504 urb->transfer_buffer, 505 urb->transfer_buffer_length, 506 NULL, 507 urb, 508 urb->interval); 509 break; 510 case PIPE_CONTROL: 511 case PIPE_BULK: 512 break; 513 default: 514 return 0; 515 } 516 return 1; 517 } 518 519 /*-------------------------------------------------------------------------*/ 520 521 #ifdef DEBUG 522 /* tell us the current USB frame number */ 523 524 static int sohci_get_current_frame_number(struct usb_device *usb_dev) 525 { 526 ohci_t *ohci = &gohci; 527 528 return m16_swap(ohci->hcca->frame_no); 529 } 530 #endif 531 532 /*-------------------------------------------------------------------------* 533 * ED handling functions 534 *-------------------------------------------------------------------------*/ 535 536 /* search for the right branch to insert an interrupt ed into the int tree 537 * do some load ballancing; 538 * returns the branch and 539 * sets the interval to interval = 2^integer (ld (interval)) */ 540 541 static int ep_int_ballance(ohci_t *ohci, int interval, int load) 542 { 543 int i, branch = 0; 544 545 /* search for the least loaded interrupt endpoint 546 * branch of all 32 branches 547 */ 548 for (i = 0; i < 32; i++) 549 if (ohci->ohci_int_load [branch] > ohci->ohci_int_load [i]) 550 branch = i; 551 552 branch = branch % interval; 553 for (i = branch; i < 32; i += interval) 554 ohci->ohci_int_load [i] += load; 555 556 return branch; 557 } 558 559 /*-------------------------------------------------------------------------*/ 560 561 /* 2^int( ld (inter)) */ 562 563 static int ep_2_n_interval(int inter) 564 { 565 int i; 566 for (i = 0; ((inter >> i) > 1) && (i < 5); i++); 567 return 1 << i; 568 } 569 570 /*-------------------------------------------------------------------------*/ 571 572 /* the int tree is a binary tree 573 * in order to process it sequentially the indexes of the branches have to 574 * be mapped the mapping reverses the bits of a word of num_bits length */ 575 static int ep_rev(int num_bits, int word) 576 { 577 int i, wout = 0; 578 579 for (i = 0; i < num_bits; i++) 580 wout |= (((word >> i) & 1) << (num_bits - i - 1)); 581 return wout; 582 } 583 584 /*-------------------------------------------------------------------------* 585 * ED handling functions 586 *-------------------------------------------------------------------------*/ 587 588 /* link an ed into one of the HC chains */ 589 590 static int ep_link(ohci_t *ohci, ed_t *edi) 591 { 592 volatile ed_t *ed = edi; 593 int int_branch; 594 int i; 595 int inter; 596 int interval; 597 int load; 598 __u32 *ed_p; 599 600 ed->state = ED_OPER; 601 ed->int_interval = 0; 602 603 switch (ed->type) { 604 case PIPE_CONTROL: 605 ed->hwNextED = 0; 606 if (ohci->ed_controltail == NULL) 607 ohci_writel(ed, &ohci->regs->ed_controlhead); 608 else 609 ohci->ed_controltail->hwNextED = 610 m32_swap((unsigned long)ed); 611 612 ed->ed_prev = ohci->ed_controltail; 613 if (!ohci->ed_controltail && !ohci->ed_rm_list[0] && 614 !ohci->ed_rm_list[1] && !ohci->sleeping) { 615 ohci->hc_control |= OHCI_CTRL_CLE; 616 ohci_writel(ohci->hc_control, &ohci->regs->control); 617 } 618 ohci->ed_controltail = edi; 619 break; 620 621 case PIPE_BULK: 622 ed->hwNextED = 0; 623 if (ohci->ed_bulktail == NULL) 624 ohci_writel(ed, &ohci->regs->ed_bulkhead); 625 else 626 ohci->ed_bulktail->hwNextED = 627 m32_swap((unsigned long)ed); 628 629 ed->ed_prev = ohci->ed_bulktail; 630 if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] && 631 !ohci->ed_rm_list[1] && !ohci->sleeping) { 632 ohci->hc_control |= OHCI_CTRL_BLE; 633 ohci_writel(ohci->hc_control, &ohci->regs->control); 634 } 635 ohci->ed_bulktail = edi; 636 break; 637 638 case PIPE_INTERRUPT: 639 load = ed->int_load; 640 interval = ep_2_n_interval(ed->int_period); 641 ed->int_interval = interval; 642 int_branch = ep_int_ballance(ohci, interval, load); 643 ed->int_branch = int_branch; 644 645 for (i = 0; i < ep_rev(6, interval); i += inter) { 646 inter = 1; 647 for (ed_p = &(ohci->hcca->int_table[\ 648 ep_rev(5, i) + int_branch]); 649 (*ed_p != 0) && 650 (((ed_t *)ed_p)->int_interval >= interval); 651 ed_p = &(((ed_t *)ed_p)->hwNextED)) 652 inter = ep_rev(6, 653 ((ed_t *)ed_p)->int_interval); 654 ed->hwNextED = *ed_p; 655 *ed_p = m32_swap((unsigned long)ed); 656 } 657 break; 658 } 659 return 0; 660 } 661 662 /*-------------------------------------------------------------------------*/ 663 664 /* scan the periodic table to find and unlink this ED */ 665 static void periodic_unlink(struct ohci *ohci, volatile struct ed *ed, 666 unsigned index, unsigned period) 667 { 668 for (; index < NUM_INTS; index += period) { 669 __u32 *ed_p = &ohci->hcca->int_table [index]; 670 671 /* ED might have been unlinked through another path */ 672 while (*ed_p != 0) { 673 if (((struct ed *) 674 m32_swap((unsigned long)ed_p)) == ed) { 675 *ed_p = ed->hwNextED; 676 break; 677 } 678 ed_p = &(((struct ed *) 679 m32_swap((unsigned long)ed_p))->hwNextED); 680 } 681 } 682 } 683 684 /* unlink an ed from one of the HC chains. 685 * just the link to the ed is unlinked. 686 * the link from the ed still points to another operational ed or 0 687 * so the HC can eventually finish the processing of the unlinked ed */ 688 689 static int ep_unlink(ohci_t *ohci, ed_t *edi) 690 { 691 volatile ed_t *ed = edi; 692 int i; 693 694 ed->hwINFO |= m32_swap(OHCI_ED_SKIP); 695 696 switch (ed->type) { 697 case PIPE_CONTROL: 698 if (ed->ed_prev == NULL) { 699 if (!ed->hwNextED) { 700 ohci->hc_control &= ~OHCI_CTRL_CLE; 701 ohci_writel(ohci->hc_control, 702 &ohci->regs->control); 703 } 704 ohci_writel(m32_swap(*((__u32 *)&ed->hwNextED)), 705 &ohci->regs->ed_controlhead); 706 } else { 707 ed->ed_prev->hwNextED = ed->hwNextED; 708 } 709 if (ohci->ed_controltail == ed) { 710 ohci->ed_controltail = ed->ed_prev; 711 } else { 712 ((ed_t *)m32_swap( 713 *((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev; 714 } 715 break; 716 717 case PIPE_BULK: 718 if (ed->ed_prev == NULL) { 719 if (!ed->hwNextED) { 720 ohci->hc_control &= ~OHCI_CTRL_BLE; 721 ohci_writel(ohci->hc_control, 722 &ohci->regs->control); 723 } 724 ohci_writel(m32_swap(*((__u32 *)&ed->hwNextED)), 725 &ohci->regs->ed_bulkhead); 726 } else { 727 ed->ed_prev->hwNextED = ed->hwNextED; 728 } 729 if (ohci->ed_bulktail == ed) { 730 ohci->ed_bulktail = ed->ed_prev; 731 } else { 732 ((ed_t *)m32_swap( 733 *((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev; 734 } 735 break; 736 737 case PIPE_INTERRUPT: 738 periodic_unlink(ohci, ed, 0, 1); 739 for (i = ed->int_branch; i < 32; i += ed->int_interval) 740 ohci->ohci_int_load[i] -= ed->int_load; 741 break; 742 } 743 ed->state = ED_UNLINK; 744 return 0; 745 } 746 747 /*-------------------------------------------------------------------------*/ 748 749 /* add/reinit an endpoint; this should be done once at the 750 * usb_set_configuration command, but the USB stack is a little bit 751 * stateless so we do it at every transaction if the state of the ed 752 * is ED_NEW then a dummy td is added and the state is changed to 753 * ED_UNLINK in all other cases the state is left unchanged the ed 754 * info fields are setted anyway even though most of them should not 755 * change 756 */ 757 static ed_t *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe, 758 int interval, int load) 759 { 760 td_t *td; 761 ed_t *ed_ret; 762 volatile ed_t *ed; 763 764 ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint(pipe) << 1) | 765 (usb_pipecontrol(pipe)? 0: usb_pipeout(pipe))]; 766 767 if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) { 768 err("ep_add_ed: pending delete"); 769 /* pending delete request */ 770 return NULL; 771 } 772 773 if (ed->state == ED_NEW) { 774 /* dummy td; end of td list for ed */ 775 td = td_alloc(usb_dev); 776 ed->hwTailP = m32_swap((unsigned long)td); 777 ed->hwHeadP = ed->hwTailP; 778 ed->state = ED_UNLINK; 779 ed->type = usb_pipetype(pipe); 780 ohci_dev.ed_cnt++; 781 } 782 783 ed->hwINFO = m32_swap(usb_pipedevice(pipe) 784 | usb_pipeendpoint(pipe) << 7 785 | (usb_pipeisoc(pipe)? 0x8000: 0) 786 | (usb_pipecontrol(pipe)? 0: \ 787 (usb_pipeout(pipe)? 0x800: 0x1000)) 788 | (usb_dev->speed == USB_SPEED_LOW) << 13 789 | usb_maxpacket(usb_dev, pipe) << 16); 790 791 if (ed->type == PIPE_INTERRUPT && ed->state == ED_UNLINK) { 792 ed->int_period = interval; 793 ed->int_load = load; 794 } 795 796 return ed_ret; 797 } 798 799 /*-------------------------------------------------------------------------* 800 * TD handling functions 801 *-------------------------------------------------------------------------*/ 802 803 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */ 804 805 static void td_fill(ohci_t *ohci, unsigned int info, 806 void *data, int len, 807 struct usb_device *dev, int index, urb_priv_t *urb_priv) 808 { 809 volatile td_t *td, *td_pt; 810 #ifdef OHCI_FILL_TRACE 811 int i; 812 #endif 813 814 if (index > urb_priv->length) { 815 err("index > length"); 816 return; 817 } 818 /* use this td as the next dummy */ 819 td_pt = urb_priv->td [index]; 820 td_pt->hwNextTD = 0; 821 822 /* fill the old dummy TD */ 823 td = urb_priv->td [index] = 824 (td_t *)(m32_swap(urb_priv->ed->hwTailP) & ~0xf); 825 826 td->ed = urb_priv->ed; 827 td->next_dl_td = NULL; 828 td->index = index; 829 td->data = (__u32)data; 830 #ifdef OHCI_FILL_TRACE 831 if (usb_pipebulk(urb_priv->pipe) && usb_pipeout(urb_priv->pipe)) { 832 for (i = 0; i < len; i++) 833 printf("td->data[%d] %#2x ", i, ((unsigned char *)td->data)[i]); 834 printf("\n"); 835 } 836 #endif 837 if (!len) 838 data = 0; 839 840 td->hwINFO = m32_swap(info); 841 td->hwCBP = m32_swap((unsigned long)data); 842 if (data) 843 td->hwBE = m32_swap((unsigned long)(data + len - 1)); 844 else 845 td->hwBE = 0; 846 847 td->hwNextTD = m32_swap((unsigned long)td_pt); 848 849 /* append to queue */ 850 td->ed->hwTailP = td->hwNextTD; 851 } 852 853 /*-------------------------------------------------------------------------*/ 854 855 /* prepare all TDs of a transfer */ 856 857 static void td_submit_job(struct usb_device *dev, unsigned long pipe, 858 void *buffer, int transfer_len, 859 struct devrequest *setup, urb_priv_t *urb, 860 int interval) 861 { 862 ohci_t *ohci = &gohci; 863 int data_len = transfer_len; 864 void *data; 865 int cnt = 0; 866 __u32 info = 0; 867 unsigned int toggle = 0; 868 869 /* OHCI handles the DATA-toggles itself, we just use the USB-toggle 870 * bits for reseting */ 871 if (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) { 872 toggle = TD_T_TOGGLE; 873 } else { 874 toggle = TD_T_DATA0; 875 usb_settoggle(dev, usb_pipeendpoint(pipe), 876 usb_pipeout(pipe), 1); 877 } 878 urb->td_cnt = 0; 879 if (data_len) 880 data = buffer; 881 else 882 data = 0; 883 884 switch (usb_pipetype(pipe)) { 885 case PIPE_BULK: 886 info = usb_pipeout(pipe)? 887 TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ; 888 while (data_len > 4096) { 889 td_fill(ohci, info | (cnt? TD_T_TOGGLE:toggle), 890 data, 4096, dev, cnt, urb); 891 data += 4096; data_len -= 4096; cnt++; 892 } 893 info = usb_pipeout(pipe)? 894 TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ; 895 td_fill(ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 896 data_len, dev, cnt, urb); 897 cnt++; 898 899 if (!ohci->sleeping) { 900 /* start bulk list */ 901 ohci_writel(OHCI_BLF, &ohci->regs->cmdstatus); 902 } 903 break; 904 905 case PIPE_CONTROL: 906 /* Setup phase */ 907 info = TD_CC | TD_DP_SETUP | TD_T_DATA0; 908 td_fill(ohci, info, setup, 8, dev, cnt++, urb); 909 910 /* Optional Data phase */ 911 if (data_len > 0) { 912 info = usb_pipeout(pipe)? 913 TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : 914 TD_CC | TD_R | TD_DP_IN | TD_T_DATA1; 915 /* NOTE: mishandles transfers >8K, some >4K */ 916 td_fill(ohci, info, data, data_len, dev, cnt++, urb); 917 } 918 919 /* Status phase */ 920 info = usb_pipeout(pipe)? 921 TD_CC | TD_DP_IN | TD_T_DATA1: 922 TD_CC | TD_DP_OUT | TD_T_DATA1; 923 td_fill(ohci, info, data, 0, dev, cnt++, urb); 924 925 if (!ohci->sleeping) { 926 /* start Control list */ 927 ohci_writel(OHCI_CLF, &ohci->regs->cmdstatus); 928 } 929 break; 930 931 case PIPE_INTERRUPT: 932 info = usb_pipeout(urb->pipe)? 933 TD_CC | TD_DP_OUT | toggle: 934 TD_CC | TD_R | TD_DP_IN | toggle; 935 td_fill(ohci, info, data, data_len, dev, cnt++, urb); 936 break; 937 } 938 if (urb->length != cnt) 939 dbg("TD LENGTH %d != CNT %d", urb->length, cnt); 940 } 941 942 /*-------------------------------------------------------------------------* 943 * Done List handling functions 944 *-------------------------------------------------------------------------*/ 945 946 /* calculate the transfer length and update the urb */ 947 948 static void dl_transfer_length(td_t *td) 949 { 950 __u32 tdBE, tdCBP; 951 urb_priv_t *lurb_priv = td->ed->purb; 952 953 tdBE = m32_swap(td->hwBE); 954 tdCBP = m32_swap(td->hwCBP); 955 956 if (!(usb_pipecontrol(lurb_priv->pipe) && 957 ((td->index == 0) || (td->index == lurb_priv->length - 1)))) { 958 if (tdBE != 0) { 959 if (td->hwCBP == 0) 960 lurb_priv->actual_length += tdBE - td->data + 1; 961 else 962 lurb_priv->actual_length += tdCBP - td->data; 963 } 964 } 965 } 966 967 /*-------------------------------------------------------------------------*/ 968 static void check_status(td_t *td_list) 969 { 970 urb_priv_t *lurb_priv = td_list->ed->purb; 971 int urb_len = lurb_priv->length; 972 __u32 *phwHeadP = &td_list->ed->hwHeadP; 973 int cc; 974 975 cc = TD_CC_GET(m32_swap(td_list->hwINFO)); 976 if (cc) { 977 err(" USB-error: %s (%x)", cc_to_string[cc], cc); 978 979 if (*phwHeadP & m32_swap(0x1)) { 980 if (lurb_priv && 981 ((td_list->index + 1) < urb_len)) { 982 *phwHeadP = 983 (lurb_priv->td[urb_len - 1]->hwNextTD &\ 984 m32_swap(0xfffffff0)) | 985 (*phwHeadP & m32_swap(0x2)); 986 987 lurb_priv->td_cnt += urb_len - 988 td_list->index - 1; 989 } else 990 *phwHeadP &= m32_swap(0xfffffff2); 991 } 992 #ifdef CONFIG_MPC5200 993 td_list->hwNextTD = 0; 994 #endif 995 } 996 } 997 998 /* replies to the request have to be on a FIFO basis so 999 * we reverse the reversed done-list */ 1000 static td_t *dl_reverse_done_list(ohci_t *ohci) 1001 { 1002 __u32 td_list_hc; 1003 td_t *td_rev = NULL; 1004 td_t *td_list = NULL; 1005 1006 td_list_hc = m32_swap(ohci->hcca->done_head) & 0xfffffff0; 1007 ohci->hcca->done_head = 0; 1008 1009 while (td_list_hc) { 1010 td_list = (td_t *)td_list_hc; 1011 check_status(td_list); 1012 td_list->next_dl_td = td_rev; 1013 td_rev = td_list; 1014 td_list_hc = m32_swap(td_list->hwNextTD) & 0xfffffff0; 1015 } 1016 return td_list; 1017 } 1018 1019 /*-------------------------------------------------------------------------*/ 1020 /*-------------------------------------------------------------------------*/ 1021 1022 static void finish_urb(ohci_t *ohci, urb_priv_t *urb, int status) 1023 { 1024 if ((status & (ED_OPER | ED_UNLINK)) && (urb->state != URB_DEL)) 1025 urb->finished = sohci_return_job(ohci, urb); 1026 else 1027 dbg("finish_urb: strange.., ED state %x, \n", status); 1028 } 1029 1030 /* 1031 * Used to take back a TD from the host controller. This would normally be 1032 * called from within dl_done_list, however it may be called directly if the 1033 * HC no longer sees the TD and it has not appeared on the donelist (after 1034 * two frames). This bug has been observed on ZF Micro systems. 1035 */ 1036 static int takeback_td(ohci_t *ohci, td_t *td_list) 1037 { 1038 ed_t *ed; 1039 int cc; 1040 int stat = 0; 1041 /* urb_t *urb; */ 1042 urb_priv_t *lurb_priv; 1043 __u32 tdINFO, edHeadP, edTailP; 1044 1045 tdINFO = m32_swap(td_list->hwINFO); 1046 1047 ed = td_list->ed; 1048 lurb_priv = ed->purb; 1049 1050 dl_transfer_length(td_list); 1051 1052 lurb_priv->td_cnt++; 1053 1054 /* error code of transfer */ 1055 cc = TD_CC_GET(tdINFO); 1056 if (cc) { 1057 err("USB-error: %s (%x)", cc_to_string[cc], cc); 1058 stat = cc_to_error[cc]; 1059 } 1060 1061 /* see if this done list makes for all TD's of current URB, 1062 * and mark the URB finished if so */ 1063 if (lurb_priv->td_cnt == lurb_priv->length) 1064 finish_urb(ohci, lurb_priv, ed->state); 1065 1066 dbg("dl_done_list: processing TD %x, len %x\n", 1067 lurb_priv->td_cnt, lurb_priv->length); 1068 1069 if (ed->state != ED_NEW && (!usb_pipeint(lurb_priv->pipe))) { 1070 edHeadP = m32_swap(ed->hwHeadP) & 0xfffffff0; 1071 edTailP = m32_swap(ed->hwTailP); 1072 1073 /* unlink eds if they are not busy */ 1074 if ((edHeadP == edTailP) && (ed->state == ED_OPER)) 1075 ep_unlink(ohci, ed); 1076 } 1077 return stat; 1078 } 1079 1080 static int dl_done_list(ohci_t *ohci) 1081 { 1082 int stat = 0; 1083 td_t *td_list = dl_reverse_done_list(ohci); 1084 1085 while (td_list) { 1086 td_t *td_next = td_list->next_dl_td; 1087 stat = takeback_td(ohci, td_list); 1088 td_list = td_next; 1089 } 1090 return stat; 1091 } 1092 1093 /*-------------------------------------------------------------------------* 1094 * Virtual Root Hub 1095 *-------------------------------------------------------------------------*/ 1096 1097 #include <usbroothubdes.h> 1098 1099 /* Hub class-specific descriptor is constructed dynamically */ 1100 1101 /*-------------------------------------------------------------------------*/ 1102 1103 #define OK(x) len = (x); break 1104 #ifdef DEBUG 1105 #define WR_RH_STAT(x) {info("WR:status %#8x", (x)); ohci_writel((x), \ 1106 &gohci.regs->roothub.status); } 1107 #define WR_RH_PORTSTAT(x) {info("WR:portstatus[%d] %#8x", wIndex-1, \ 1108 (x)); ohci_writel((x), &gohci.regs->roothub.portstatus[wIndex-1]); } 1109 #else 1110 #define WR_RH_STAT(x) ohci_writel((x), &gohci.regs->roothub.status) 1111 #define WR_RH_PORTSTAT(x) ohci_writel((x), \ 1112 &gohci.regs->roothub.portstatus[wIndex-1]) 1113 #endif 1114 #define RD_RH_STAT roothub_status(&gohci) 1115 #define RD_RH_PORTSTAT roothub_portstatus(&gohci, wIndex-1) 1116 1117 /* request to virtual root hub */ 1118 1119 int rh_check_port_status(ohci_t *controller) 1120 { 1121 __u32 temp, ndp, i; 1122 int res; 1123 1124 res = -1; 1125 temp = roothub_a(controller); 1126 ndp = (temp & RH_A_NDP); 1127 #ifdef CONFIG_AT91C_PQFP_UHPBUG 1128 ndp = (ndp == 2) ? 1:0; 1129 #endif 1130 for (i = 0; i < ndp; i++) { 1131 temp = roothub_portstatus(controller, i); 1132 /* check for a device disconnect */ 1133 if (((temp & (RH_PS_PESC | RH_PS_CSC)) == 1134 (RH_PS_PESC | RH_PS_CSC)) && 1135 ((temp & RH_PS_CCS) == 0)) { 1136 res = i; 1137 break; 1138 } 1139 } 1140 return res; 1141 } 1142 1143 static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe, 1144 void *buffer, int transfer_len, struct devrequest *cmd) 1145 { 1146 void *data = buffer; 1147 int leni = transfer_len; 1148 int len = 0; 1149 int stat = 0; 1150 __u16 bmRType_bReq; 1151 __u16 wValue; 1152 __u16 wIndex; 1153 __u16 wLength; 1154 ALLOC_ALIGN_BUFFER(__u8, databuf, 16, sizeof(u32)); 1155 1156 #ifdef DEBUG 1157 pkt_print(NULL, dev, pipe, buffer, transfer_len, 1158 cmd, "SUB(rh)", usb_pipein(pipe)); 1159 #else 1160 mdelay(1); 1161 #endif 1162 if (usb_pipeint(pipe)) { 1163 info("Root-Hub submit IRQ: NOT implemented"); 1164 return 0; 1165 } 1166 1167 bmRType_bReq = cmd->requesttype | (cmd->request << 8); 1168 wValue = le16_to_cpu(cmd->value); 1169 wIndex = le16_to_cpu(cmd->index); 1170 wLength = le16_to_cpu(cmd->length); 1171 1172 info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x", 1173 dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength); 1174 1175 switch (bmRType_bReq) { 1176 /* Request Destination: 1177 without flags: Device, 1178 RH_INTERFACE: interface, 1179 RH_ENDPOINT: endpoint, 1180 RH_CLASS means HUB here, 1181 RH_OTHER | RH_CLASS almost ever means HUB_PORT here 1182 */ 1183 1184 case RH_GET_STATUS: 1185 *(u16 *)databuf = cpu_to_le16(1); 1186 OK(2); 1187 case RH_GET_STATUS | RH_INTERFACE: 1188 *(u16 *)databuf = cpu_to_le16(0); 1189 OK(2); 1190 case RH_GET_STATUS | RH_ENDPOINT: 1191 *(u16 *)databuf = cpu_to_le16(0); 1192 OK(2); 1193 case RH_GET_STATUS | RH_CLASS: 1194 *(u32 *)databuf = cpu_to_le32( 1195 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE)); 1196 OK(4); 1197 case RH_GET_STATUS | RH_OTHER | RH_CLASS: 1198 *(u32 *)databuf = cpu_to_le32(RD_RH_PORTSTAT); 1199 OK(4); 1200 1201 case RH_CLEAR_FEATURE | RH_ENDPOINT: 1202 switch (wValue) { 1203 case (RH_ENDPOINT_STALL): 1204 OK(0); 1205 } 1206 break; 1207 1208 case RH_CLEAR_FEATURE | RH_CLASS: 1209 switch (wValue) { 1210 case RH_C_HUB_LOCAL_POWER: 1211 OK(0); 1212 case (RH_C_HUB_OVER_CURRENT): 1213 WR_RH_STAT(RH_HS_OCIC); 1214 OK(0); 1215 } 1216 break; 1217 1218 case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS: 1219 switch (wValue) { 1220 case (RH_PORT_ENABLE): WR_RH_PORTSTAT(RH_PS_CCS); OK(0); 1221 case (RH_PORT_SUSPEND): WR_RH_PORTSTAT(RH_PS_POCI); OK(0); 1222 case (RH_PORT_POWER): WR_RH_PORTSTAT(RH_PS_LSDA); OK(0); 1223 case (RH_C_PORT_CONNECTION): WR_RH_PORTSTAT(RH_PS_CSC); OK(0); 1224 case (RH_C_PORT_ENABLE): WR_RH_PORTSTAT(RH_PS_PESC); OK(0); 1225 case (RH_C_PORT_SUSPEND): WR_RH_PORTSTAT(RH_PS_PSSC); OK(0); 1226 case (RH_C_PORT_OVER_CURRENT):WR_RH_PORTSTAT(RH_PS_OCIC); OK(0); 1227 case (RH_C_PORT_RESET): WR_RH_PORTSTAT(RH_PS_PRSC); OK(0); 1228 } 1229 break; 1230 1231 case RH_SET_FEATURE | RH_OTHER | RH_CLASS: 1232 switch (wValue) { 1233 case (RH_PORT_SUSPEND): 1234 WR_RH_PORTSTAT(RH_PS_PSS); OK(0); 1235 case (RH_PORT_RESET): /* BUG IN HUP CODE *********/ 1236 if (RD_RH_PORTSTAT & RH_PS_CCS) 1237 WR_RH_PORTSTAT(RH_PS_PRS); 1238 OK(0); 1239 case (RH_PORT_POWER): 1240 WR_RH_PORTSTAT(RH_PS_PPS); 1241 mdelay(100); 1242 OK(0); 1243 case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/ 1244 if (RD_RH_PORTSTAT & RH_PS_CCS) 1245 WR_RH_PORTSTAT(RH_PS_PES); 1246 OK(0); 1247 } 1248 break; 1249 1250 case RH_SET_ADDRESS: 1251 gohci.rh.devnum = wValue; 1252 OK(0); 1253 1254 case RH_GET_DESCRIPTOR: 1255 switch ((wValue & 0xff00) >> 8) { 1256 case (0x01): /* device descriptor */ 1257 len = min_t(unsigned int, 1258 leni, 1259 min_t(unsigned int, 1260 sizeof(root_hub_dev_des), 1261 wLength)); 1262 databuf = root_hub_dev_des; OK(len); 1263 case (0x02): /* configuration descriptor */ 1264 len = min_t(unsigned int, 1265 leni, 1266 min_t(unsigned int, 1267 sizeof(root_hub_config_des), 1268 wLength)); 1269 databuf = root_hub_config_des; OK(len); 1270 case (0x03): /* string descriptors */ 1271 if (wValue == 0x0300) { 1272 len = min_t(unsigned int, 1273 leni, 1274 min_t(unsigned int, 1275 sizeof(root_hub_str_index0), 1276 wLength)); 1277 databuf = root_hub_str_index0; 1278 OK(len); 1279 } 1280 if (wValue == 0x0301) { 1281 len = min_t(unsigned int, 1282 leni, 1283 min_t(unsigned int, 1284 sizeof(root_hub_str_index1), 1285 wLength)); 1286 databuf = root_hub_str_index1; 1287 OK(len); 1288 } 1289 default: 1290 stat = USB_ST_STALLED; 1291 } 1292 break; 1293 1294 case RH_GET_DESCRIPTOR | RH_CLASS: 1295 { 1296 __u32 temp = roothub_a(&gohci); 1297 1298 databuf[0] = 9; /* min length; */ 1299 databuf[1] = 0x29; 1300 databuf[2] = temp & RH_A_NDP; 1301 #ifdef CONFIG_AT91C_PQFP_UHPBUG 1302 databuf[2] = (databuf[2] == 2) ? 1 : 0; 1303 #endif 1304 databuf[3] = 0; 1305 if (temp & RH_A_PSM) /* per-port power switching? */ 1306 databuf[3] |= 0x1; 1307 if (temp & RH_A_NOCP) /* no overcurrent reporting? */ 1308 databuf[3] |= 0x10; 1309 else if (temp & RH_A_OCPM)/* per-port overcurrent reporting? */ 1310 databuf[3] |= 0x8; 1311 1312 databuf[4] = 0; 1313 databuf[5] = (temp & RH_A_POTPGT) >> 24; 1314 databuf[6] = 0; 1315 temp = roothub_b(&gohci); 1316 databuf[7] = temp & RH_B_DR; 1317 if (databuf[2] < 7) { 1318 databuf[8] = 0xff; 1319 } else { 1320 databuf[0] += 2; 1321 databuf[8] = (temp & RH_B_DR) >> 8; 1322 databuf[10] = databuf[9] = 0xff; 1323 } 1324 1325 len = min_t(unsigned int, leni, 1326 min_t(unsigned int, databuf[0], wLength)); 1327 OK(len); 1328 } 1329 1330 case RH_GET_CONFIGURATION: 1331 databuf[0] = 0x01; 1332 OK(1); 1333 1334 case RH_SET_CONFIGURATION: 1335 WR_RH_STAT(0x10000); 1336 OK(0); 1337 1338 default: 1339 dbg("unsupported root hub command"); 1340 stat = USB_ST_STALLED; 1341 } 1342 1343 #ifdef DEBUG 1344 ohci_dump_roothub(&gohci, 1); 1345 #else 1346 mdelay(1); 1347 #endif 1348 1349 len = min_t(int, len, leni); 1350 if (data != databuf) 1351 memcpy(data, databuf, len); 1352 dev->act_len = len; 1353 dev->status = stat; 1354 1355 #ifdef DEBUG 1356 pkt_print(NULL, dev, pipe, buffer, 1357 transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/); 1358 #else 1359 mdelay(1); 1360 #endif 1361 1362 return stat; 1363 } 1364 1365 /*-------------------------------------------------------------------------*/ 1366 1367 /* common code for handling submit messages - used for all but root hub */ 1368 /* accesses. */ 1369 int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer, 1370 int transfer_len, struct devrequest *setup, int interval) 1371 { 1372 int stat = 0; 1373 int maxsize = usb_maxpacket(dev, pipe); 1374 int timeout; 1375 urb_priv_t *urb; 1376 1377 urb = malloc(sizeof(urb_priv_t)); 1378 memset(urb, 0, sizeof(urb_priv_t)); 1379 1380 urb->dev = dev; 1381 urb->pipe = pipe; 1382 urb->transfer_buffer = buffer; 1383 urb->transfer_buffer_length = transfer_len; 1384 urb->interval = interval; 1385 1386 /* device pulled? Shortcut the action. */ 1387 if (devgone == dev) { 1388 dev->status = USB_ST_CRC_ERR; 1389 return 0; 1390 } 1391 1392 #ifdef DEBUG 1393 urb->actual_length = 0; 1394 pkt_print(urb, dev, pipe, buffer, transfer_len, 1395 setup, "SUB", usb_pipein(pipe)); 1396 #else 1397 mdelay(1); 1398 #endif 1399 if (!maxsize) { 1400 err("submit_common_message: pipesize for pipe %lx is zero", 1401 pipe); 1402 return -1; 1403 } 1404 1405 if (sohci_submit_job(urb, setup) < 0) { 1406 err("sohci_submit_job failed"); 1407 return -1; 1408 } 1409 1410 #if 0 1411 mdelay(10); 1412 /* ohci_dump_status(&gohci); */ 1413 #endif 1414 1415 timeout = USB_TIMEOUT_MS(pipe); 1416 1417 /* wait for it to complete */ 1418 for (;;) { 1419 /* check whether the controller is done */ 1420 stat = hc_interrupt(); 1421 if (stat < 0) { 1422 stat = USB_ST_CRC_ERR; 1423 break; 1424 } 1425 1426 /* NOTE: since we are not interrupt driven in U-Boot and always 1427 * handle only one URB at a time, we cannot assume the 1428 * transaction finished on the first successful return from 1429 * hc_interrupt().. unless the flag for current URB is set, 1430 * meaning that all TD's to/from device got actually 1431 * transferred and processed. If the current URB is not 1432 * finished we need to re-iterate this loop so as 1433 * hc_interrupt() gets called again as there needs to be some 1434 * more TD's to process still */ 1435 if ((stat >= 0) && (stat != 0xff) && (urb->finished)) { 1436 /* 0xff is returned for an SF-interrupt */ 1437 break; 1438 } 1439 1440 if (--timeout) { 1441 mdelay(1); 1442 if (!urb->finished) 1443 dbg("*"); 1444 1445 } else { 1446 err("CTL:TIMEOUT "); 1447 dbg("submit_common_msg: TO status %x\n", stat); 1448 urb->finished = 1; 1449 stat = USB_ST_CRC_ERR; 1450 break; 1451 } 1452 } 1453 1454 dev->status = stat; 1455 dev->act_len = urb->actual_length; 1456 1457 #ifdef DEBUG 1458 pkt_print(urb, dev, pipe, buffer, transfer_len, 1459 setup, "RET(ctlr)", usb_pipein(pipe)); 1460 #else 1461 mdelay(1); 1462 #endif 1463 1464 /* free TDs in urb_priv */ 1465 if (!usb_pipeint(pipe)) 1466 urb_free_priv(urb); 1467 return 0; 1468 } 1469 1470 /* submit routines called from usb.c */ 1471 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer, 1472 int transfer_len) 1473 { 1474 info("submit_bulk_msg"); 1475 return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0); 1476 } 1477 1478 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer, 1479 int transfer_len, struct devrequest *setup) 1480 { 1481 int maxsize = usb_maxpacket(dev, pipe); 1482 1483 info("submit_control_msg"); 1484 #ifdef DEBUG 1485 pkt_print(NULL, dev, pipe, buffer, transfer_len, 1486 setup, "SUB", usb_pipein(pipe)); 1487 #else 1488 mdelay(1); 1489 #endif 1490 if (!maxsize) { 1491 err("submit_control_message: pipesize for pipe %lx is zero", 1492 pipe); 1493 return -1; 1494 } 1495 if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) { 1496 gohci.rh.dev = dev; 1497 /* root hub - redirect */ 1498 return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len, 1499 setup); 1500 } 1501 1502 return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0); 1503 } 1504 1505 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, 1506 int transfer_len, int interval) 1507 { 1508 info("submit_int_msg"); 1509 return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 1510 interval); 1511 } 1512 1513 /*-------------------------------------------------------------------------* 1514 * HC functions 1515 *-------------------------------------------------------------------------*/ 1516 1517 /* reset the HC and BUS */ 1518 1519 static int hc_reset(ohci_t *ohci) 1520 { 1521 #ifdef CONFIG_PCI_EHCI_DEVNO 1522 pci_dev_t pdev; 1523 #endif 1524 int timeout = 30; 1525 int smm_timeout = 50; /* 0,5 sec */ 1526 1527 dbg("%s\n", __FUNCTION__); 1528 1529 #ifdef CONFIG_PCI_EHCI_DEVNO 1530 /* 1531 * Some multi-function controllers (e.g. ISP1562) allow root hub 1532 * resetting via EHCI registers only. 1533 */ 1534 pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVNO); 1535 if (pdev != -1) { 1536 u32 base; 1537 int timeout = 1000; 1538 1539 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &base); 1540 base += EHCI_USBCMD_OFF; 1541 ohci_writel(ohci_readl(base) | EHCI_USBCMD_HCRESET, base); 1542 1543 while (ohci_readl(base) & EHCI_USBCMD_HCRESET) { 1544 if (timeout-- <= 0) { 1545 printf("USB RootHub reset timed out!"); 1546 break; 1547 } 1548 udelay(1); 1549 } 1550 } else 1551 printf("No EHCI func at %d index!\n", CONFIG_PCI_EHCI_DEVNO); 1552 #endif 1553 if (ohci_readl(&ohci->regs->control) & OHCI_CTRL_IR) { 1554 /* SMM owns the HC, request ownership */ 1555 ohci_writel(OHCI_OCR, &ohci->regs->cmdstatus); 1556 info("USB HC TakeOver from SMM"); 1557 while (ohci_readl(&ohci->regs->control) & OHCI_CTRL_IR) { 1558 mdelay(10); 1559 if (--smm_timeout == 0) { 1560 err("USB HC TakeOver failed!"); 1561 return -1; 1562 } 1563 } 1564 } 1565 1566 /* Disable HC interrupts */ 1567 ohci_writel(OHCI_INTR_MIE, &ohci->regs->intrdisable); 1568 1569 dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;\n", 1570 ohci->slot_name, 1571 ohci_readl(&ohci->regs->control)); 1572 1573 /* Reset USB (needed by some controllers) */ 1574 ohci->hc_control = 0; 1575 ohci_writel(ohci->hc_control, &ohci->regs->control); 1576 1577 /* HC Reset requires max 10 us delay */ 1578 ohci_writel(OHCI_HCR, &ohci->regs->cmdstatus); 1579 while ((ohci_readl(&ohci->regs->cmdstatus) & OHCI_HCR) != 0) { 1580 if (--timeout == 0) { 1581 err("USB HC reset timed out!"); 1582 return -1; 1583 } 1584 udelay(1); 1585 } 1586 return 0; 1587 } 1588 1589 /*-------------------------------------------------------------------------*/ 1590 1591 /* Start an OHCI controller, set the BUS operational 1592 * enable interrupts 1593 * connect the virtual root hub */ 1594 1595 static int hc_start(ohci_t *ohci) 1596 { 1597 __u32 mask; 1598 unsigned int fminterval; 1599 1600 ohci->disabled = 1; 1601 1602 /* Tell the controller where the control and bulk lists are 1603 * The lists are empty now. */ 1604 1605 ohci_writel(0, &ohci->regs->ed_controlhead); 1606 ohci_writel(0, &ohci->regs->ed_bulkhead); 1607 1608 ohci_writel((__u32)ohci->hcca, 1609 &ohci->regs->hcca); /* reset clears this */ 1610 1611 fminterval = 0x2edf; 1612 ohci_writel((fminterval * 9) / 10, &ohci->regs->periodicstart); 1613 fminterval |= ((((fminterval - 210) * 6) / 7) << 16); 1614 ohci_writel(fminterval, &ohci->regs->fminterval); 1615 ohci_writel(0x628, &ohci->regs->lsthresh); 1616 1617 /* start controller operations */ 1618 ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER; 1619 ohci->disabled = 0; 1620 ohci_writel(ohci->hc_control, &ohci->regs->control); 1621 1622 /* disable all interrupts */ 1623 mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD | 1624 OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC | 1625 OHCI_INTR_OC | OHCI_INTR_MIE); 1626 ohci_writel(mask, &ohci->regs->intrdisable); 1627 /* clear all interrupts */ 1628 mask &= ~OHCI_INTR_MIE; 1629 ohci_writel(mask, &ohci->regs->intrstatus); 1630 /* Choose the interrupts we care about now - but w/o MIE */ 1631 mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO; 1632 ohci_writel(mask, &ohci->regs->intrenable); 1633 1634 #ifdef OHCI_USE_NPS 1635 /* required for AMD-756 and some Mac platforms */ 1636 ohci_writel((roothub_a(ohci) | RH_A_NPS) & ~RH_A_PSM, 1637 &ohci->regs->roothub.a); 1638 ohci_writel(RH_HS_LPSC, &ohci->regs->roothub.status); 1639 #endif /* OHCI_USE_NPS */ 1640 1641 /* POTPGT delay is bits 24-31, in 2 ms units. */ 1642 mdelay((roothub_a(ohci) >> 23) & 0x1fe); 1643 1644 /* connect the virtual root hub */ 1645 ohci->rh.devnum = 0; 1646 1647 return 0; 1648 } 1649 1650 /*-------------------------------------------------------------------------*/ 1651 1652 /* an interrupt happens */ 1653 1654 static int hc_interrupt(void) 1655 { 1656 ohci_t *ohci = &gohci; 1657 struct ohci_regs *regs = ohci->regs; 1658 int ints; 1659 int stat = -1; 1660 1661 if ((ohci->hcca->done_head != 0) && 1662 !(m32_swap(ohci->hcca->done_head) & 0x01)) { 1663 ints = OHCI_INTR_WDH; 1664 } else { 1665 ints = ohci_readl(®s->intrstatus); 1666 if (ints == ~(u32)0) { 1667 ohci->disabled++; 1668 err("%s device removed!", ohci->slot_name); 1669 return -1; 1670 } else { 1671 ints &= ohci_readl(®s->intrenable); 1672 if (ints == 0) { 1673 dbg("hc_interrupt: returning..\n"); 1674 return 0xff; 1675 } 1676 } 1677 } 1678 1679 /* dbg("Interrupt: %x frame: %x", ints, 1680 le16_to_cpu(ohci->hcca->frame_no)); */ 1681 1682 if (ints & OHCI_INTR_RHSC) 1683 stat = 0xff; 1684 1685 if (ints & OHCI_INTR_UE) { 1686 ohci->disabled++; 1687 err("OHCI Unrecoverable Error, controller usb-%s disabled", 1688 ohci->slot_name); 1689 /* e.g. due to PCI Master/Target Abort */ 1690 1691 #ifdef DEBUG 1692 ohci_dump(ohci, 1); 1693 #else 1694 mdelay(1); 1695 #endif 1696 /* FIXME: be optimistic, hope that bug won't repeat often. */ 1697 /* Make some non-interrupt context restart the controller. */ 1698 /* Count and limit the retries though; either hardware or */ 1699 /* software errors can go forever... */ 1700 hc_reset(ohci); 1701 return -1; 1702 } 1703 1704 if (ints & OHCI_INTR_WDH) { 1705 mdelay(1); 1706 ohci_writel(OHCI_INTR_WDH, ®s->intrdisable); 1707 (void)ohci_readl(®s->intrdisable); /* flush */ 1708 stat = dl_done_list(&gohci); 1709 ohci_writel(OHCI_INTR_WDH, ®s->intrenable); 1710 (void)ohci_readl(®s->intrdisable); /* flush */ 1711 } 1712 1713 if (ints & OHCI_INTR_SO) { 1714 dbg("USB Schedule overrun\n"); 1715 ohci_writel(OHCI_INTR_SO, ®s->intrenable); 1716 stat = -1; 1717 } 1718 1719 /* FIXME: this assumes SOF (1/ms) interrupts don't get lost... */ 1720 if (ints & OHCI_INTR_SF) { 1721 unsigned int frame = m16_swap(ohci->hcca->frame_no) & 1; 1722 mdelay(1); 1723 ohci_writel(OHCI_INTR_SF, ®s->intrdisable); 1724 if (ohci->ed_rm_list[frame] != NULL) 1725 ohci_writel(OHCI_INTR_SF, ®s->intrenable); 1726 stat = 0xff; 1727 } 1728 1729 ohci_writel(ints, ®s->intrstatus); 1730 return stat; 1731 } 1732 1733 /*-------------------------------------------------------------------------*/ 1734 1735 /*-------------------------------------------------------------------------*/ 1736 1737 /* De-allocate all resources.. */ 1738 1739 static void hc_release_ohci(ohci_t *ohci) 1740 { 1741 dbg("USB HC release ohci usb-%s", ohci->slot_name); 1742 1743 if (!ohci->disabled) 1744 hc_reset(ohci); 1745 } 1746 1747 /*-------------------------------------------------------------------------*/ 1748 1749 /* 1750 * low level initalisation routine, called from usb.c 1751 */ 1752 static char ohci_inited = 0; 1753 1754 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) 1755 { 1756 #ifdef CONFIG_PCI_OHCI 1757 pci_dev_t pdev; 1758 #endif 1759 1760 #ifdef CONFIG_SYS_USB_OHCI_CPU_INIT 1761 /* cpu dependant init */ 1762 if (usb_cpu_init()) 1763 return -1; 1764 #endif 1765 1766 #ifdef CONFIG_SYS_USB_OHCI_BOARD_INIT 1767 /* board dependant init */ 1768 if (board_usb_init(index, USB_INIT_HOST)) 1769 return -1; 1770 #endif 1771 memset(&gohci, 0, sizeof(ohci_t)); 1772 1773 /* align the storage */ 1774 if ((__u32)&ghcca[0] & 0xff) { 1775 err("HCCA not aligned!!"); 1776 return -1; 1777 } 1778 phcca = &ghcca[0]; 1779 info("aligned ghcca %p", phcca); 1780 memset(&ohci_dev, 0, sizeof(struct ohci_device)); 1781 if ((__u32)&ohci_dev.ed[0] & 0x7) { 1782 err("EDs not aligned!!"); 1783 return -1; 1784 } 1785 memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1)); 1786 if ((__u32)gtd & 0x7) { 1787 err("TDs not aligned!!"); 1788 return -1; 1789 } 1790 ptd = gtd; 1791 gohci.hcca = phcca; 1792 memset(phcca, 0, sizeof(struct ohci_hcca)); 1793 1794 gohci.disabled = 1; 1795 gohci.sleeping = 0; 1796 gohci.irq = -1; 1797 #ifdef CONFIG_PCI_OHCI 1798 pdev = pci_find_devices(ohci_pci_ids, CONFIG_PCI_OHCI_DEVNO); 1799 1800 if (pdev != -1) { 1801 u16 vid, did; 1802 u32 base; 1803 pci_read_config_word(pdev, PCI_VENDOR_ID, &vid); 1804 pci_read_config_word(pdev, PCI_DEVICE_ID, &did); 1805 printf("OHCI pci controller (%04x, %04x) found @(%d:%d:%d)\n", 1806 vid, did, (pdev >> 16) & 0xff, 1807 (pdev >> 11) & 0x1f, (pdev >> 8) & 0x7); 1808 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &base); 1809 printf("OHCI regs address 0x%08x\n", base); 1810 gohci.regs = (struct ohci_regs *)base; 1811 } else 1812 return -1; 1813 #else 1814 gohci.regs = (struct ohci_regs *)CONFIG_SYS_USB_OHCI_REGS_BASE; 1815 #endif 1816 1817 gohci.flags = 0; 1818 gohci.slot_name = CONFIG_SYS_USB_OHCI_SLOT_NAME; 1819 1820 if (hc_reset (&gohci) < 0) { 1821 hc_release_ohci (&gohci); 1822 err ("can't reset usb-%s", gohci.slot_name); 1823 #ifdef CONFIG_SYS_USB_OHCI_BOARD_INIT 1824 /* board dependant cleanup */ 1825 board_usb_cleanup(index, USB_INIT_HOST); 1826 #endif 1827 1828 #ifdef CONFIG_SYS_USB_OHCI_CPU_INIT 1829 /* cpu dependant cleanup */ 1830 usb_cpu_init_fail(); 1831 #endif 1832 return -1; 1833 } 1834 1835 if (hc_start(&gohci) < 0) { 1836 err("can't start usb-%s", gohci.slot_name); 1837 hc_release_ohci(&gohci); 1838 /* Initialization failed */ 1839 #ifdef CONFIG_SYS_USB_OHCI_BOARD_INIT 1840 /* board dependant cleanup */ 1841 usb_board_stop(); 1842 #endif 1843 1844 #ifdef CONFIG_SYS_USB_OHCI_CPU_INIT 1845 /* cpu dependant cleanup */ 1846 usb_cpu_stop(); 1847 #endif 1848 return -1; 1849 } 1850 1851 #ifdef DEBUG 1852 ohci_dump(&gohci, 1); 1853 #else 1854 mdelay(1); 1855 #endif 1856 ohci_inited = 1; 1857 return 0; 1858 } 1859 1860 int usb_lowlevel_stop(int index) 1861 { 1862 /* this gets called really early - before the controller has */ 1863 /* even been initialized! */ 1864 if (!ohci_inited) 1865 return 0; 1866 /* TODO release any interrupts, etc. */ 1867 /* call hc_release_ohci() here ? */ 1868 hc_reset(&gohci); 1869 1870 #ifdef CONFIG_SYS_USB_OHCI_BOARD_INIT 1871 /* board dependant cleanup */ 1872 if (usb_board_stop()) 1873 return -1; 1874 #endif 1875 1876 #ifdef CONFIG_SYS_USB_OHCI_CPU_INIT 1877 /* cpu dependant cleanup */ 1878 if (usb_cpu_stop()) 1879 return -1; 1880 #endif 1881 /* This driver is no longer initialised. It needs a new low-level 1882 * init (board/cpu) before it can be used again. */ 1883 ohci_inited = 0; 1884 return 0; 1885 } 1886