1/* 2 * ISP1362 HCD (Host Controller Driver) for USB. 3 * 4 * Copyright (C) 2005 Lothar Wassmann <LW@KARO-electronics.de> 5 * 6 * Derived from the SL811 HCD, rewritten for ISP116x. 7 * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee> 8 * 9 * Portions: 10 * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) 11 * Copyright (C) 2004 David Brownell 12 */ 13 14/* 15 * The ISP1362 chip requires a large delay (300ns and 462ns) between 16 * accesses to the address and data register. 17 * The following timing options exist: 18 * 19 * 1. Configure your memory controller to add such delays if it can (the best) 20 * 2. Implement platform-specific delay function possibly 21 * combined with configuring the memory controller; see 22 * include/linux/usb_isp1362.h for more info. 23 * 3. Use ndelay (easiest, poorest). 24 * 25 * Use the corresponding macros USE_PLATFORM_DELAY and USE_NDELAY in the 26 * platform specific section of isp1362.h to select the appropriate variant. 27 * 28 * Also note that according to the Philips "ISP1362 Errata" document 29 * Rev 1.00 from 27 May data corruption may occur when the #WR signal 30 * is reasserted (even with #CS deasserted) within 132ns after a 31 * write cycle to any controller register. If the hardware doesn't 32 * implement the recommended fix (gating the #WR with #CS) software 33 * must ensure that no further write cycle (not necessarily to the chip!) 34 * is issued by the CPU within this interval. 35 36 * For PXA25x this can be ensured by using VLIO with the maximum 37 * recovery time (MSCx = 0x7f8c) with a memory clock of 99.53 MHz. 38 */ 39 40#ifdef CONFIG_USB_DEBUG 41# define ISP1362_DEBUG 42#else 43# undef ISP1362_DEBUG 44#endif 45 46/* 47 * The PXA255 UDC apparently doesn't handle GET_STATUS, GET_CONFIG and 48 * GET_INTERFACE requests correctly when the SETUP and DATA stages of the 49 * requests are carried out in separate frames. This will delay any SETUP 50 * packets until the start of the next frame so that this situation is 51 * unlikely to occur (and makes usbtest happy running with a PXA255 target 52 * device). 53 */ 54#undef BUGGY_PXA2XX_UDC_USBTEST 55 56#undef PTD_TRACE 57#undef URB_TRACE 58#undef VERBOSE 59#undef REGISTERS 60 61/* This enables a memory test on the ISP1362 chip memory to make sure the 62 * chip access timing is correct. 63 */ 64#undef CHIP_BUFFER_TEST 65 66#include <linux/module.h> 67#include <linux/moduleparam.h> 68#include <linux/kernel.h> 69#include <linux/delay.h> 70#include <linux/ioport.h> 71#include <linux/sched.h> 72#include <linux/slab.h> 73#include <linux/smp_lock.h> 74#include <linux/errno.h> 75#include <linux/init.h> 76#include <linux/list.h> 77#include <linux/interrupt.h> 78#include <linux/usb.h> 79#include <linux/usb/isp1362.h> 80#include <linux/usb/hcd.h> 81#include <linux/platform_device.h> 82#include <linux/pm.h> 83#include <linux/io.h> 84#include <linux/bitmap.h> 85 86#include <asm/irq.h> 87#include <asm/system.h> 88#include <asm/byteorder.h> 89#include <asm/unaligned.h> 90 91static int dbg_level; 92#ifdef ISP1362_DEBUG 93module_param(dbg_level, int, 0644); 94#else 95module_param(dbg_level, int, 0); 96#define STUB_DEBUG_FILE 97#endif 98 99#include "../core/usb.h" 100#include "isp1362.h" 101 102 103#define DRIVER_VERSION "2005-04-04" 104#define DRIVER_DESC "ISP1362 USB Host Controller Driver" 105 106MODULE_DESCRIPTION(DRIVER_DESC); 107MODULE_LICENSE("GPL"); 108 109static const char hcd_name[] = "isp1362-hcd"; 110 111static void isp1362_hc_stop(struct usb_hcd *hcd); 112static int isp1362_hc_start(struct usb_hcd *hcd); 113 114/*-------------------------------------------------------------------------*/ 115 116/* 117 * When called from the interrupthandler only isp1362_hcd->irqenb is modified, 118 * since the interrupt handler will write isp1362_hcd->irqenb to HCuPINT upon 119 * completion. 120 * We don't need a 'disable' counterpart, since interrupts will be disabled 121 * only by the interrupt handler. 122 */ 123static inline void isp1362_enable_int(struct isp1362_hcd *isp1362_hcd, u16 mask) 124{ 125 if ((isp1362_hcd->irqenb | mask) == isp1362_hcd->irqenb) 126 return; 127 if (mask & ~isp1362_hcd->irqenb) 128 isp1362_write_reg16(isp1362_hcd, HCuPINT, mask & ~isp1362_hcd->irqenb); 129 isp1362_hcd->irqenb |= mask; 130 if (isp1362_hcd->irq_active) 131 return; 132 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 133} 134 135/*-------------------------------------------------------------------------*/ 136 137static inline struct isp1362_ep_queue *get_ptd_queue(struct isp1362_hcd *isp1362_hcd, 138 u16 offset) 139{ 140 struct isp1362_ep_queue *epq = NULL; 141 142 if (offset < isp1362_hcd->istl_queue[1].buf_start) 143 epq = &isp1362_hcd->istl_queue[0]; 144 else if (offset < isp1362_hcd->intl_queue.buf_start) 145 epq = &isp1362_hcd->istl_queue[1]; 146 else if (offset < isp1362_hcd->atl_queue.buf_start) 147 epq = &isp1362_hcd->intl_queue; 148 else if (offset < isp1362_hcd->atl_queue.buf_start + 149 isp1362_hcd->atl_queue.buf_size) 150 epq = &isp1362_hcd->atl_queue; 151 152 if (epq) 153 DBG(1, "%s: PTD $%04x is on %s queue\n", __func__, offset, epq->name); 154 else 155 pr_warning("%s: invalid PTD $%04x\n", __func__, offset); 156 157 return epq; 158} 159 160static inline int get_ptd_offset(struct isp1362_ep_queue *epq, u8 index) 161{ 162 int offset; 163 164 if (index * epq->blk_size > epq->buf_size) { 165 pr_warning("%s: Bad %s index %d(%d)\n", __func__, epq->name, index, 166 epq->buf_size / epq->blk_size); 167 return -EINVAL; 168 } 169 offset = epq->buf_start + index * epq->blk_size; 170 DBG(3, "%s: %s PTD[%02x] # %04x\n", __func__, epq->name, index, offset); 171 172 return offset; 173} 174 175/*-------------------------------------------------------------------------*/ 176 177static inline u16 max_transfer_size(struct isp1362_ep_queue *epq, size_t size, 178 int mps) 179{ 180 u16 xfer_size = min_t(size_t, MAX_XFER_SIZE, size); 181 182 xfer_size = min_t(size_t, xfer_size, epq->buf_avail * epq->blk_size - PTD_HEADER_SIZE); 183 if (xfer_size < size && xfer_size % mps) 184 xfer_size -= xfer_size % mps; 185 186 return xfer_size; 187} 188 189static int claim_ptd_buffers(struct isp1362_ep_queue *epq, 190 struct isp1362_ep *ep, u16 len) 191{ 192 int ptd_offset = -EINVAL; 193 int num_ptds = ((len + PTD_HEADER_SIZE - 1) / epq->blk_size) + 1; 194 int found; 195 196 BUG_ON(len > epq->buf_size); 197 198 if (!epq->buf_avail) 199 return -ENOMEM; 200 201 if (ep->num_ptds) 202 pr_err("%s: %s len %d/%d num_ptds %d buf_map %08lx skip_map %08lx\n", __func__, 203 epq->name, len, epq->blk_size, num_ptds, epq->buf_map, epq->skip_map); 204 BUG_ON(ep->num_ptds != 0); 205 206 found = bitmap_find_next_zero_area(&epq->buf_map, epq->buf_count, 0, 207 num_ptds, 0); 208 if (found >= epq->buf_count) 209 return -EOVERFLOW; 210 211 DBG(1, "%s: Found %d PTDs[%d] for %d/%d byte\n", __func__, 212 num_ptds, found, len, (int)(epq->blk_size - PTD_HEADER_SIZE)); 213 ptd_offset = get_ptd_offset(epq, found); 214 WARN_ON(ptd_offset < 0); 215 ep->ptd_offset = ptd_offset; 216 ep->num_ptds += num_ptds; 217 epq->buf_avail -= num_ptds; 218 BUG_ON(epq->buf_avail > epq->buf_count); 219 ep->ptd_index = found; 220 bitmap_set(&epq->buf_map, found, num_ptds); 221 DBG(1, "%s: Done %s PTD[%d] $%04x, avail %d count %d claimed %d %08lx:%08lx\n", 222 __func__, epq->name, ep->ptd_index, ep->ptd_offset, 223 epq->buf_avail, epq->buf_count, num_ptds, epq->buf_map, epq->skip_map); 224 225 return found; 226} 227 228static inline void release_ptd_buffers(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) 229{ 230 int index = ep->ptd_index; 231 int last = ep->ptd_index + ep->num_ptds; 232 233 if (last > epq->buf_count) 234 pr_err("%s: ep %p req %d len %d %s PTD[%d] $%04x num_ptds %d buf_count %d buf_avail %d buf_map %08lx skip_map %08lx\n", 235 __func__, ep, ep->num_req, ep->length, epq->name, ep->ptd_index, 236 ep->ptd_offset, ep->num_ptds, epq->buf_count, epq->buf_avail, 237 epq->buf_map, epq->skip_map); 238 BUG_ON(last > epq->buf_count); 239 240 for (; index < last; index++) { 241 __clear_bit(index, &epq->buf_map); 242 __set_bit(index, &epq->skip_map); 243 } 244 epq->buf_avail += ep->num_ptds; 245 epq->ptd_count--; 246 247 BUG_ON(epq->buf_avail > epq->buf_count); 248 BUG_ON(epq->ptd_count > epq->buf_count); 249 250 DBG(1, "%s: Done %s PTDs $%04x released %d avail %d count %d\n", 251 __func__, epq->name, 252 ep->ptd_offset, ep->num_ptds, epq->buf_avail, epq->buf_count); 253 DBG(1, "%s: buf_map %08lx skip_map %08lx\n", __func__, 254 epq->buf_map, epq->skip_map); 255 256 ep->num_ptds = 0; 257 ep->ptd_offset = -EINVAL; 258 ep->ptd_index = -EINVAL; 259} 260 261/*-------------------------------------------------------------------------*/ 262 263/* 264 Set up PTD's. 265*/ 266static void prepare_ptd(struct isp1362_hcd *isp1362_hcd, struct urb *urb, 267 struct isp1362_ep *ep, struct isp1362_ep_queue *epq, 268 u16 fno) 269{ 270 struct ptd *ptd; 271 int toggle; 272 int dir; 273 u16 len; 274 size_t buf_len = urb->transfer_buffer_length - urb->actual_length; 275 276 DBG(3, "%s: %s ep %p\n", __func__, epq->name, ep); 277 278 ptd = &ep->ptd; 279 280 ep->data = (unsigned char *)urb->transfer_buffer + urb->actual_length; 281 282 switch (ep->nextpid) { 283 case USB_PID_IN: 284 toggle = usb_gettoggle(urb->dev, ep->epnum, 0); 285 dir = PTD_DIR_IN; 286 if (usb_pipecontrol(urb->pipe)) { 287 len = min_t(size_t, ep->maxpacket, buf_len); 288 } else if (usb_pipeisoc(urb->pipe)) { 289 len = min_t(size_t, urb->iso_frame_desc[fno].length, MAX_XFER_SIZE); 290 ep->data = urb->transfer_buffer + urb->iso_frame_desc[fno].offset; 291 } else 292 len = max_transfer_size(epq, buf_len, ep->maxpacket); 293 DBG(1, "%s: IN len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, 294 (int)buf_len); 295 break; 296 case USB_PID_OUT: 297 toggle = usb_gettoggle(urb->dev, ep->epnum, 1); 298 dir = PTD_DIR_OUT; 299 if (usb_pipecontrol(urb->pipe)) 300 len = min_t(size_t, ep->maxpacket, buf_len); 301 else if (usb_pipeisoc(urb->pipe)) 302 len = min_t(size_t, urb->iso_frame_desc[0].length, MAX_XFER_SIZE); 303 else 304 len = max_transfer_size(epq, buf_len, ep->maxpacket); 305 if (len == 0) 306 pr_info("%s: Sending ZERO packet: %d\n", __func__, 307 urb->transfer_flags & URB_ZERO_PACKET); 308 DBG(1, "%s: OUT len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, 309 (int)buf_len); 310 break; 311 case USB_PID_SETUP: 312 toggle = 0; 313 dir = PTD_DIR_SETUP; 314 len = sizeof(struct usb_ctrlrequest); 315 DBG(1, "%s: SETUP len %d\n", __func__, len); 316 ep->data = urb->setup_packet; 317 break; 318 case USB_PID_ACK: 319 toggle = 1; 320 len = 0; 321 dir = (urb->transfer_buffer_length && usb_pipein(urb->pipe)) ? 322 PTD_DIR_OUT : PTD_DIR_IN; 323 DBG(1, "%s: ACK len %d\n", __func__, len); 324 break; 325 default: 326 toggle = dir = len = 0; 327 pr_err("%s@%d: ep->nextpid %02x\n", __func__, __LINE__, ep->nextpid); 328 BUG_ON(1); 329 } 330 331 ep->length = len; 332 if (!len) 333 ep->data = NULL; 334 335 ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); 336 ptd->mps = PTD_MPS(ep->maxpacket) | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | 337 PTD_EP(ep->epnum); 338 ptd->len = PTD_LEN(len) | PTD_DIR(dir); 339 ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); 340 341 if (usb_pipeint(urb->pipe)) { 342 ptd->faddr |= PTD_SF_INT(ep->branch); 343 ptd->faddr |= PTD_PR(ep->interval ? __ffs(ep->interval) : 0); 344 } 345 if (usb_pipeisoc(urb->pipe)) 346 ptd->faddr |= PTD_SF_ISO(fno); 347 348 DBG(1, "%s: Finished\n", __func__); 349} 350 351static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 352 struct isp1362_ep_queue *epq) 353{ 354 struct ptd *ptd = &ep->ptd; 355 int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length; 356 357 _BUG_ON(ep->ptd_offset < 0); 358 359 prefetch(ptd); 360 isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); 361 if (len) 362 isp1362_write_buffer(isp1362_hcd, ep->data, 363 ep->ptd_offset + PTD_HEADER_SIZE, len); 364 365 dump_ptd(ptd); 366 dump_ptd_out_data(ptd, ep->data); 367} 368 369static void isp1362_read_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 370 struct isp1362_ep_queue *epq) 371{ 372 struct ptd *ptd = &ep->ptd; 373 int act_len; 374 375 WARN_ON(list_empty(&ep->active)); 376 BUG_ON(ep->ptd_offset < 0); 377 378 list_del_init(&ep->active); 379 DBG(1, "%s: ep %p removed from active list %p\n", __func__, ep, &epq->active); 380 381 prefetchw(ptd); 382 isp1362_read_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); 383 dump_ptd(ptd); 384 act_len = PTD_GET_COUNT(ptd); 385 if (PTD_GET_DIR(ptd) != PTD_DIR_IN || act_len == 0) 386 return; 387 if (act_len > ep->length) 388 pr_err("%s: ep %p PTD $%04x act_len %d ep->length %d\n", __func__, ep, 389 ep->ptd_offset, act_len, ep->length); 390 BUG_ON(act_len > ep->length); 391 /* Only transfer the amount of data that has actually been overwritten 392 * in the chip buffer. We don't want any data that doesn't belong to the 393 * transfer to leak out of the chip to the callers transfer buffer! 394 */ 395 prefetchw(ep->data); 396 isp1362_read_buffer(isp1362_hcd, ep->data, 397 ep->ptd_offset + PTD_HEADER_SIZE, act_len); 398 dump_ptd_in_data(ptd, ep->data); 399} 400 401/* 402 * INT PTDs will stay in the chip until data is available. 403 * This function will remove a PTD from the chip when the URB is dequeued. 404 * Must be called with the spinlock held and IRQs disabled 405 */ 406static void remove_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) 407 408{ 409 int index; 410 struct isp1362_ep_queue *epq; 411 412 DBG(1, "%s: ep %p PTD[%d] $%04x\n", __func__, ep, ep->ptd_index, ep->ptd_offset); 413 BUG_ON(ep->ptd_offset < 0); 414 415 epq = get_ptd_queue(isp1362_hcd, ep->ptd_offset); 416 BUG_ON(!epq); 417 418 /* put ep in remove_list for cleanup */ 419 WARN_ON(!list_empty(&ep->remove_list)); 420 list_add_tail(&ep->remove_list, &isp1362_hcd->remove_list); 421 /* let SOF interrupt handle the cleanup */ 422 isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); 423 424 index = ep->ptd_index; 425 if (index < 0) 426 /* ISO queues don't have SKIP registers */ 427 return; 428 429 DBG(1, "%s: Disabling PTD[%02x] $%04x %08lx|%08x\n", __func__, 430 index, ep->ptd_offset, epq->skip_map, 1 << index); 431 432 /* prevent further processing of PTD (will be effective after next SOF) */ 433 epq->skip_map |= 1 << index; 434 if (epq == &isp1362_hcd->atl_queue) { 435 DBG(2, "%s: ATLSKIP = %08x -> %08lx\n", __func__, 436 isp1362_read_reg32(isp1362_hcd, HCATLSKIP), epq->skip_map); 437 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, epq->skip_map); 438 if (~epq->skip_map == 0) 439 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 440 } else if (epq == &isp1362_hcd->intl_queue) { 441 DBG(2, "%s: INTLSKIP = %08x -> %08lx\n", __func__, 442 isp1362_read_reg32(isp1362_hcd, HCINTLSKIP), epq->skip_map); 443 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, epq->skip_map); 444 if (~epq->skip_map == 0) 445 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 446 } 447} 448 449/* 450 Take done or failed requests out of schedule. Give back 451 processed urbs. 452*/ 453static void finish_request(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 454 struct urb *urb, int status) 455 __releases(isp1362_hcd->lock) 456 __acquires(isp1362_hcd->lock) 457{ 458 urb->hcpriv = NULL; 459 ep->error_count = 0; 460 461 if (usb_pipecontrol(urb->pipe)) 462 ep->nextpid = USB_PID_SETUP; 463 464 URB_DBG("%s: req %d FA %d ep%d%s %s: len %d/%d %s stat %d\n", __func__, 465 ep->num_req, usb_pipedevice(urb->pipe), 466 usb_pipeendpoint(urb->pipe), 467 !usb_pipein(urb->pipe) ? "out" : "in", 468 usb_pipecontrol(urb->pipe) ? "ctrl" : 469 usb_pipeint(urb->pipe) ? "int" : 470 usb_pipebulk(urb->pipe) ? "bulk" : 471 "iso", 472 urb->actual_length, urb->transfer_buffer_length, 473 !(urb->transfer_flags & URB_SHORT_NOT_OK) ? 474 "short_ok" : "", urb->status); 475 476 477 usb_hcd_unlink_urb_from_ep(isp1362_hcd_to_hcd(isp1362_hcd), urb); 478 spin_unlock(&isp1362_hcd->lock); 479 usb_hcd_giveback_urb(isp1362_hcd_to_hcd(isp1362_hcd), urb, status); 480 spin_lock(&isp1362_hcd->lock); 481 482 /* take idle endpoints out of the schedule right away */ 483 if (!list_empty(&ep->hep->urb_list)) 484 return; 485 486 /* async deschedule */ 487 if (!list_empty(&ep->schedule)) { 488 list_del_init(&ep->schedule); 489 return; 490 } 491 492 493 if (ep->interval) { 494 /* periodic deschedule */ 495 DBG(1, "deschedule qh%d/%p branch %d load %d bandwidth %d -> %d\n", ep->interval, 496 ep, ep->branch, ep->load, 497 isp1362_hcd->load[ep->branch], 498 isp1362_hcd->load[ep->branch] - ep->load); 499 isp1362_hcd->load[ep->branch] -= ep->load; 500 ep->branch = PERIODIC_SIZE; 501 } 502} 503 504/* 505 * Analyze transfer results, handle partial transfers and errors 506*/ 507static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) 508{ 509 struct urb *urb = get_urb(ep); 510 struct usb_device *udev; 511 struct ptd *ptd; 512 int short_ok; 513 u16 len; 514 int urbstat = -EINPROGRESS; 515 u8 cc; 516 517 DBG(2, "%s: ep %p req %d\n", __func__, ep, ep->num_req); 518 519 udev = urb->dev; 520 ptd = &ep->ptd; 521 cc = PTD_GET_CC(ptd); 522 if (cc == PTD_NOTACCESSED) { 523 pr_err("%s: req %d PTD %p Untouched by ISP1362\n", __func__, 524 ep->num_req, ptd); 525 cc = PTD_DEVNOTRESP; 526 } 527 528 short_ok = !(urb->transfer_flags & URB_SHORT_NOT_OK); 529 len = urb->transfer_buffer_length - urb->actual_length; 530 531 /* Data underrun is special. For allowed underrun 532 we clear the error and continue as normal. For 533 forbidden underrun we finish the DATA stage 534 immediately while for control transfer, 535 we do a STATUS stage. 536 */ 537 if (cc == PTD_DATAUNDERRUN) { 538 if (short_ok) { 539 DBG(1, "%s: req %d Allowed data underrun short_%sok %d/%d/%d byte\n", 540 __func__, ep->num_req, short_ok ? "" : "not_", 541 PTD_GET_COUNT(ptd), ep->maxpacket, len); 542 cc = PTD_CC_NOERROR; 543 urbstat = 0; 544 } else { 545 DBG(1, "%s: req %d Data Underrun %s nextpid %02x short_%sok %d/%d/%d byte\n", 546 __func__, ep->num_req, 547 usb_pipein(urb->pipe) ? "IN" : "OUT", ep->nextpid, 548 short_ok ? "" : "not_", 549 PTD_GET_COUNT(ptd), ep->maxpacket, len); 550 if (usb_pipecontrol(urb->pipe)) { 551 ep->nextpid = USB_PID_ACK; 552 /* save the data underrun error code for later and 553 * procede with the status stage 554 */ 555 urb->actual_length += PTD_GET_COUNT(ptd); 556 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 557 558 if (urb->status == -EINPROGRESS) 559 urb->status = cc_to_error[PTD_DATAUNDERRUN]; 560 } else { 561 usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT, 562 PTD_GET_TOGGLE(ptd)); 563 urbstat = cc_to_error[PTD_DATAUNDERRUN]; 564 } 565 goto out; 566 } 567 } 568 569 if (cc != PTD_CC_NOERROR) { 570 if (++ep->error_count >= 3 || cc == PTD_CC_STALL || cc == PTD_DATAOVERRUN) { 571 urbstat = cc_to_error[cc]; 572 DBG(1, "%s: req %d nextpid %02x, status %d, error %d, error_count %d\n", 573 __func__, ep->num_req, ep->nextpid, urbstat, cc, 574 ep->error_count); 575 } 576 goto out; 577 } 578 579 switch (ep->nextpid) { 580 case USB_PID_OUT: 581 if (PTD_GET_COUNT(ptd) != ep->length) 582 pr_err("%s: count=%d len=%d\n", __func__, 583 PTD_GET_COUNT(ptd), ep->length); 584 BUG_ON(PTD_GET_COUNT(ptd) != ep->length); 585 urb->actual_length += ep->length; 586 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 587 usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd)); 588 if (urb->actual_length == urb->transfer_buffer_length) { 589 DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, 590 ep->num_req, len, ep->maxpacket, urbstat); 591 if (usb_pipecontrol(urb->pipe)) { 592 DBG(3, "%s: req %d %s Wait for ACK\n", __func__, 593 ep->num_req, 594 usb_pipein(urb->pipe) ? "IN" : "OUT"); 595 ep->nextpid = USB_PID_ACK; 596 } else { 597 if (len % ep->maxpacket || 598 !(urb->transfer_flags & URB_ZERO_PACKET)) { 599 urbstat = 0; 600 DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", 601 __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", 602 urbstat, len, ep->maxpacket, urb->actual_length); 603 } 604 } 605 } 606 break; 607 case USB_PID_IN: 608 len = PTD_GET_COUNT(ptd); 609 BUG_ON(len > ep->length); 610 urb->actual_length += len; 611 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 612 usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd)); 613 /* if transfer completed or (allowed) data underrun */ 614 if ((urb->transfer_buffer_length == urb->actual_length) || 615 len % ep->maxpacket) { 616 DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, 617 ep->num_req, len, ep->maxpacket, urbstat); 618 if (usb_pipecontrol(urb->pipe)) { 619 DBG(3, "%s: req %d %s Wait for ACK\n", __func__, 620 ep->num_req, 621 usb_pipein(urb->pipe) ? "IN" : "OUT"); 622 ep->nextpid = USB_PID_ACK; 623 } else { 624 urbstat = 0; 625 DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", 626 __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", 627 urbstat, len, ep->maxpacket, urb->actual_length); 628 } 629 } 630 break; 631 case USB_PID_SETUP: 632 if (urb->transfer_buffer_length == urb->actual_length) { 633 ep->nextpid = USB_PID_ACK; 634 } else if (usb_pipeout(urb->pipe)) { 635 usb_settoggle(udev, 0, 1, 1); 636 ep->nextpid = USB_PID_OUT; 637 } else { 638 usb_settoggle(udev, 0, 0, 1); 639 ep->nextpid = USB_PID_IN; 640 } 641 break; 642 case USB_PID_ACK: 643 DBG(3, "%s: req %d got ACK %d -> 0\n", __func__, ep->num_req, 644 urbstat); 645 WARN_ON(urbstat != -EINPROGRESS); 646 urbstat = 0; 647 ep->nextpid = 0; 648 break; 649 default: 650 BUG_ON(1); 651 } 652 653 out: 654 if (urbstat != -EINPROGRESS) { 655 DBG(2, "%s: Finishing ep %p req %d urb %p status %d\n", __func__, 656 ep, ep->num_req, urb, urbstat); 657 finish_request(isp1362_hcd, ep, urb, urbstat); 658 } 659} 660 661static void finish_unlinks(struct isp1362_hcd *isp1362_hcd) 662{ 663 struct isp1362_ep *ep; 664 struct isp1362_ep *tmp; 665 666 list_for_each_entry_safe(ep, tmp, &isp1362_hcd->remove_list, remove_list) { 667 struct isp1362_ep_queue *epq = 668 get_ptd_queue(isp1362_hcd, ep->ptd_offset); 669 int index = ep->ptd_index; 670 671 BUG_ON(epq == NULL); 672 if (index >= 0) { 673 DBG(1, "%s: remove PTD[%d] $%04x\n", __func__, index, ep->ptd_offset); 674 BUG_ON(ep->num_ptds == 0); 675 release_ptd_buffers(epq, ep); 676 } 677 if (!list_empty(&ep->hep->urb_list)) { 678 struct urb *urb = get_urb(ep); 679 680 DBG(1, "%s: Finishing req %d ep %p from remove_list\n", __func__, 681 ep->num_req, ep); 682 finish_request(isp1362_hcd, ep, urb, -ESHUTDOWN); 683 } 684 WARN_ON(list_empty(&ep->active)); 685 if (!list_empty(&ep->active)) { 686 list_del_init(&ep->active); 687 DBG(1, "%s: ep %p removed from active list\n", __func__, ep); 688 } 689 list_del_init(&ep->remove_list); 690 DBG(1, "%s: ep %p removed from remove_list\n", __func__, ep); 691 } 692 DBG(1, "%s: Done\n", __func__); 693} 694 695static inline void enable_atl_transfers(struct isp1362_hcd *isp1362_hcd, int count) 696{ 697 if (count > 0) { 698 if (count < isp1362_hcd->atl_queue.ptd_count) 699 isp1362_write_reg16(isp1362_hcd, HCATLDTC, count); 700 isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); 701 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, isp1362_hcd->atl_queue.skip_map); 702 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 703 } else 704 isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); 705} 706 707static inline void enable_intl_transfers(struct isp1362_hcd *isp1362_hcd) 708{ 709 isp1362_enable_int(isp1362_hcd, HCuPINT_INTL); 710 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 711 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, isp1362_hcd->intl_queue.skip_map); 712} 713 714static inline void enable_istl_transfers(struct isp1362_hcd *isp1362_hcd, int flip) 715{ 716 isp1362_enable_int(isp1362_hcd, flip ? HCuPINT_ISTL1 : HCuPINT_ISTL0); 717 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, flip ? 718 HCBUFSTAT_ISTL1_FULL : HCBUFSTAT_ISTL0_FULL); 719} 720 721static int submit_req(struct isp1362_hcd *isp1362_hcd, struct urb *urb, 722 struct isp1362_ep *ep, struct isp1362_ep_queue *epq) 723{ 724 int index = epq->free_ptd; 725 726 prepare_ptd(isp1362_hcd, urb, ep, epq, 0); 727 index = claim_ptd_buffers(epq, ep, ep->length); 728 if (index == -ENOMEM) { 729 DBG(1, "%s: req %d No free %s PTD available: %d, %08lx:%08lx\n", __func__, 730 ep->num_req, epq->name, ep->num_ptds, epq->buf_map, epq->skip_map); 731 return index; 732 } else if (index == -EOVERFLOW) { 733 DBG(1, "%s: req %d Not enough space for %d byte %s PTD %d %08lx:%08lx\n", 734 __func__, ep->num_req, ep->length, epq->name, ep->num_ptds, 735 epq->buf_map, epq->skip_map); 736 return index; 737 } else 738 BUG_ON(index < 0); 739 list_add_tail(&ep->active, &epq->active); 740 DBG(1, "%s: ep %p req %d len %d added to active list %p\n", __func__, 741 ep, ep->num_req, ep->length, &epq->active); 742 DBG(1, "%s: Submitting %s PTD $%04x for ep %p req %d\n", __func__, epq->name, 743 ep->ptd_offset, ep, ep->num_req); 744 isp1362_write_ptd(isp1362_hcd, ep, epq); 745 __clear_bit(ep->ptd_index, &epq->skip_map); 746 747 return 0; 748} 749 750static void start_atl_transfers(struct isp1362_hcd *isp1362_hcd) 751{ 752 int ptd_count = 0; 753 struct isp1362_ep_queue *epq = &isp1362_hcd->atl_queue; 754 struct isp1362_ep *ep; 755 int defer = 0; 756 757 if (atomic_read(&epq->finishing)) { 758 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 759 return; 760 } 761 762 list_for_each_entry(ep, &isp1362_hcd->async, schedule) { 763 struct urb *urb = get_urb(ep); 764 int ret; 765 766 if (!list_empty(&ep->active)) { 767 DBG(2, "%s: Skipping active %s ep %p\n", __func__, epq->name, ep); 768 continue; 769 } 770 771 DBG(1, "%s: Processing %s ep %p req %d\n", __func__, epq->name, 772 ep, ep->num_req); 773 774 ret = submit_req(isp1362_hcd, urb, ep, epq); 775 if (ret == -ENOMEM) { 776 defer = 1; 777 break; 778 } else if (ret == -EOVERFLOW) { 779 defer = 1; 780 continue; 781 } 782#ifdef BUGGY_PXA2XX_UDC_USBTEST 783 defer = ep->nextpid == USB_PID_SETUP; 784#endif 785 ptd_count++; 786 } 787 788 /* Avoid starving of endpoints */ 789 if (isp1362_hcd->async.next != isp1362_hcd->async.prev) { 790 DBG(2, "%s: Cycling ASYNC schedule %d\n", __func__, ptd_count); 791 list_move(&isp1362_hcd->async, isp1362_hcd->async.next); 792 } 793 if (ptd_count || defer) 794 enable_atl_transfers(isp1362_hcd, defer ? 0 : ptd_count); 795 796 epq->ptd_count += ptd_count; 797 if (epq->ptd_count > epq->stat_maxptds) { 798 epq->stat_maxptds = epq->ptd_count; 799 DBG(0, "%s: max_ptds: %d\n", __func__, epq->stat_maxptds); 800 } 801} 802 803static void start_intl_transfers(struct isp1362_hcd *isp1362_hcd) 804{ 805 int ptd_count = 0; 806 struct isp1362_ep_queue *epq = &isp1362_hcd->intl_queue; 807 struct isp1362_ep *ep; 808 809 if (atomic_read(&epq->finishing)) { 810 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 811 return; 812 } 813 814 list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { 815 struct urb *urb = get_urb(ep); 816 int ret; 817 818 if (!list_empty(&ep->active)) { 819 DBG(1, "%s: Skipping active %s ep %p\n", __func__, 820 epq->name, ep); 821 continue; 822 } 823 824 DBG(1, "%s: Processing %s ep %p req %d\n", __func__, 825 epq->name, ep, ep->num_req); 826 ret = submit_req(isp1362_hcd, urb, ep, epq); 827 if (ret == -ENOMEM) 828 break; 829 else if (ret == -EOVERFLOW) 830 continue; 831 ptd_count++; 832 } 833 834 if (ptd_count) { 835 static int last_count; 836 837 if (ptd_count != last_count) { 838 DBG(0, "%s: ptd_count: %d\n", __func__, ptd_count); 839 last_count = ptd_count; 840 } 841 enable_intl_transfers(isp1362_hcd); 842 } 843 844 epq->ptd_count += ptd_count; 845 if (epq->ptd_count > epq->stat_maxptds) 846 epq->stat_maxptds = epq->ptd_count; 847} 848 849static inline int next_ptd(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) 850{ 851 u16 ptd_offset = ep->ptd_offset; 852 int num_ptds = (ep->length + PTD_HEADER_SIZE + (epq->blk_size - 1)) / epq->blk_size; 853 854 DBG(2, "%s: PTD offset $%04x + %04x => %d * %04x -> $%04x\n", __func__, ptd_offset, 855 ep->length, num_ptds, epq->blk_size, ptd_offset + num_ptds * epq->blk_size); 856 857 ptd_offset += num_ptds * epq->blk_size; 858 if (ptd_offset < epq->buf_start + epq->buf_size) 859 return ptd_offset; 860 else 861 return -ENOMEM; 862} 863 864static void start_iso_transfers(struct isp1362_hcd *isp1362_hcd) 865{ 866 int ptd_count = 0; 867 int flip = isp1362_hcd->istl_flip; 868 struct isp1362_ep_queue *epq; 869 int ptd_offset; 870 struct isp1362_ep *ep; 871 struct isp1362_ep *tmp; 872 u16 fno = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 873 874 fill2: 875 epq = &isp1362_hcd->istl_queue[flip]; 876 if (atomic_read(&epq->finishing)) { 877 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 878 return; 879 } 880 881 if (!list_empty(&epq->active)) 882 return; 883 884 ptd_offset = epq->buf_start; 885 list_for_each_entry_safe(ep, tmp, &isp1362_hcd->isoc, schedule) { 886 struct urb *urb = get_urb(ep); 887 s16 diff = fno - (u16)urb->start_frame; 888 889 DBG(1, "%s: Processing %s ep %p\n", __func__, epq->name, ep); 890 891 if (diff > urb->number_of_packets) { 892 /* time frame for this URB has elapsed */ 893 finish_request(isp1362_hcd, ep, urb, -EOVERFLOW); 894 continue; 895 } else if (diff < -1) { 896 /* URB is not due in this frame or the next one. 897 * Comparing with '-1' instead of '0' accounts for double 898 * buffering in the ISP1362 which enables us to queue the PTD 899 * one frame ahead of time 900 */ 901 } else if (diff == -1) { 902 /* submit PTD's that are due in the next frame */ 903 prepare_ptd(isp1362_hcd, urb, ep, epq, fno); 904 if (ptd_offset + PTD_HEADER_SIZE + ep->length > 905 epq->buf_start + epq->buf_size) { 906 pr_err("%s: Not enough ISO buffer space for %d byte PTD\n", 907 __func__, ep->length); 908 continue; 909 } 910 ep->ptd_offset = ptd_offset; 911 list_add_tail(&ep->active, &epq->active); 912 913 ptd_offset = next_ptd(epq, ep); 914 if (ptd_offset < 0) { 915 pr_warning("%s: req %d No more %s PTD buffers available\n", __func__, 916 ep->num_req, epq->name); 917 break; 918 } 919 } 920 } 921 list_for_each_entry(ep, &epq->active, active) { 922 if (epq->active.next == &ep->active) 923 ep->ptd.mps |= PTD_LAST_MSK; 924 isp1362_write_ptd(isp1362_hcd, ep, epq); 925 ptd_count++; 926 } 927 928 if (ptd_count) 929 enable_istl_transfers(isp1362_hcd, flip); 930 931 epq->ptd_count += ptd_count; 932 if (epq->ptd_count > epq->stat_maxptds) 933 epq->stat_maxptds = epq->ptd_count; 934 935 /* check, whether the second ISTL buffer may also be filled */ 936 if (!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 937 (flip ? HCBUFSTAT_ISTL0_FULL : HCBUFSTAT_ISTL1_FULL))) { 938 fno++; 939 ptd_count = 0; 940 flip = 1 - flip; 941 goto fill2; 942 } 943} 944 945static void finish_transfers(struct isp1362_hcd *isp1362_hcd, unsigned long done_map, 946 struct isp1362_ep_queue *epq) 947{ 948 struct isp1362_ep *ep; 949 struct isp1362_ep *tmp; 950 951 if (list_empty(&epq->active)) { 952 DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); 953 return; 954 } 955 956 DBG(1, "%s: Finishing %s transfers %08lx\n", __func__, epq->name, done_map); 957 958 atomic_inc(&epq->finishing); 959 list_for_each_entry_safe(ep, tmp, &epq->active, active) { 960 int index = ep->ptd_index; 961 962 DBG(1, "%s: Checking %s PTD[%02x] $%04x\n", __func__, epq->name, 963 index, ep->ptd_offset); 964 965 BUG_ON(index < 0); 966 if (__test_and_clear_bit(index, &done_map)) { 967 isp1362_read_ptd(isp1362_hcd, ep, epq); 968 epq->free_ptd = index; 969 BUG_ON(ep->num_ptds == 0); 970 release_ptd_buffers(epq, ep); 971 972 DBG(1, "%s: ep %p req %d removed from active list\n", __func__, 973 ep, ep->num_req); 974 if (!list_empty(&ep->remove_list)) { 975 list_del_init(&ep->remove_list); 976 DBG(1, "%s: ep %p removed from remove list\n", __func__, ep); 977 } 978 DBG(1, "%s: Postprocessing %s ep %p req %d\n", __func__, epq->name, 979 ep, ep->num_req); 980 postproc_ep(isp1362_hcd, ep); 981 } 982 if (!done_map) 983 break; 984 } 985 if (done_map) 986 pr_warning("%s: done_map not clear: %08lx:%08lx\n", __func__, done_map, 987 epq->skip_map); 988 atomic_dec(&epq->finishing); 989} 990 991static void finish_iso_transfers(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep_queue *epq) 992{ 993 struct isp1362_ep *ep; 994 struct isp1362_ep *tmp; 995 996 if (list_empty(&epq->active)) { 997 DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); 998 return; 999 } 1000 1001 DBG(1, "%s: Finishing %s transfers\n", __func__, epq->name); 1002 1003 atomic_inc(&epq->finishing); 1004 list_for_each_entry_safe(ep, tmp, &epq->active, active) { 1005 DBG(1, "%s: Checking PTD $%04x\n", __func__, ep->ptd_offset); 1006 1007 isp1362_read_ptd(isp1362_hcd, ep, epq); 1008 DBG(1, "%s: Postprocessing %s ep %p\n", __func__, epq->name, ep); 1009 postproc_ep(isp1362_hcd, ep); 1010 } 1011 WARN_ON(epq->blk_size != 0); 1012 atomic_dec(&epq->finishing); 1013} 1014 1015static irqreturn_t isp1362_irq(struct usb_hcd *hcd) 1016{ 1017 int handled = 0; 1018 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1019 u16 irqstat; 1020 u16 svc_mask; 1021 1022 spin_lock(&isp1362_hcd->lock); 1023 1024 BUG_ON(isp1362_hcd->irq_active++); 1025 1026 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 1027 1028 irqstat = isp1362_read_reg16(isp1362_hcd, HCuPINT); 1029 DBG(3, "%s: got IRQ %04x:%04x\n", __func__, irqstat, isp1362_hcd->irqenb); 1030 1031 /* only handle interrupts that are currently enabled */ 1032 irqstat &= isp1362_hcd->irqenb; 1033 isp1362_write_reg16(isp1362_hcd, HCuPINT, irqstat); 1034 svc_mask = irqstat; 1035 1036 if (irqstat & HCuPINT_SOF) { 1037 isp1362_hcd->irqenb &= ~HCuPINT_SOF; 1038 isp1362_hcd->irq_stat[ISP1362_INT_SOF]++; 1039 handled = 1; 1040 svc_mask &= ~HCuPINT_SOF; 1041 DBG(3, "%s: SOF\n", __func__); 1042 isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1043 if (!list_empty(&isp1362_hcd->remove_list)) 1044 finish_unlinks(isp1362_hcd); 1045 if (!list_empty(&isp1362_hcd->async) && !(irqstat & HCuPINT_ATL)) { 1046 if (list_empty(&isp1362_hcd->atl_queue.active)) { 1047 start_atl_transfers(isp1362_hcd); 1048 } else { 1049 isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); 1050 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, 1051 isp1362_hcd->atl_queue.skip_map); 1052 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 1053 } 1054 } 1055 } 1056 1057 if (irqstat & HCuPINT_ISTL0) { 1058 isp1362_hcd->irq_stat[ISP1362_INT_ISTL0]++; 1059 handled = 1; 1060 svc_mask &= ~HCuPINT_ISTL0; 1061 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL0_FULL); 1062 DBG(1, "%s: ISTL0\n", __func__); 1063 WARN_ON((int)!!isp1362_hcd->istl_flip); 1064 WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1065 HCBUFSTAT_ISTL0_ACTIVE); 1066 WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1067 HCBUFSTAT_ISTL0_DONE)); 1068 isp1362_hcd->irqenb &= ~HCuPINT_ISTL0; 1069 } 1070 1071 if (irqstat & HCuPINT_ISTL1) { 1072 isp1362_hcd->irq_stat[ISP1362_INT_ISTL1]++; 1073 handled = 1; 1074 svc_mask &= ~HCuPINT_ISTL1; 1075 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL1_FULL); 1076 DBG(1, "%s: ISTL1\n", __func__); 1077 WARN_ON(!(int)isp1362_hcd->istl_flip); 1078 WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1079 HCBUFSTAT_ISTL1_ACTIVE); 1080 WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1081 HCBUFSTAT_ISTL1_DONE)); 1082 isp1362_hcd->irqenb &= ~HCuPINT_ISTL1; 1083 } 1084 1085 if (irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) { 1086 WARN_ON((irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) == 1087 (HCuPINT_ISTL0 | HCuPINT_ISTL1)); 1088 finish_iso_transfers(isp1362_hcd, 1089 &isp1362_hcd->istl_queue[isp1362_hcd->istl_flip]); 1090 start_iso_transfers(isp1362_hcd); 1091 isp1362_hcd->istl_flip = 1 - isp1362_hcd->istl_flip; 1092 } 1093 1094 if (irqstat & HCuPINT_INTL) { 1095 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); 1096 u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCINTLSKIP); 1097 isp1362_hcd->irq_stat[ISP1362_INT_INTL]++; 1098 1099 DBG(2, "%s: INTL\n", __func__); 1100 1101 svc_mask &= ~HCuPINT_INTL; 1102 1103 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, skip_map | done_map); 1104 if (~(done_map | skip_map) == 0) 1105 /* All PTDs are finished, disable INTL processing entirely */ 1106 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 1107 1108 handled = 1; 1109 WARN_ON(!done_map); 1110 if (done_map) { 1111 DBG(3, "%s: INTL done_map %08x\n", __func__, done_map); 1112 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); 1113 start_intl_transfers(isp1362_hcd); 1114 } 1115 } 1116 1117 if (irqstat & HCuPINT_ATL) { 1118 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); 1119 u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCATLSKIP); 1120 isp1362_hcd->irq_stat[ISP1362_INT_ATL]++; 1121 1122 DBG(2, "%s: ATL\n", __func__); 1123 1124 svc_mask &= ~HCuPINT_ATL; 1125 1126 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, skip_map | done_map); 1127 if (~(done_map | skip_map) == 0) 1128 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 1129 if (done_map) { 1130 DBG(3, "%s: ATL done_map %08x\n", __func__, done_map); 1131 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); 1132 start_atl_transfers(isp1362_hcd); 1133 } 1134 handled = 1; 1135 } 1136 1137 if (irqstat & HCuPINT_OPR) { 1138 u32 intstat = isp1362_read_reg32(isp1362_hcd, HCINTSTAT); 1139 isp1362_hcd->irq_stat[ISP1362_INT_OPR]++; 1140 1141 svc_mask &= ~HCuPINT_OPR; 1142 DBG(2, "%s: OPR %08x:%08x\n", __func__, intstat, isp1362_hcd->intenb); 1143 intstat &= isp1362_hcd->intenb; 1144 if (intstat & OHCI_INTR_UE) { 1145 pr_err("Unrecoverable error\n"); 1146 } 1147 if (intstat & OHCI_INTR_RHSC) { 1148 isp1362_hcd->rhstatus = isp1362_read_reg32(isp1362_hcd, HCRHSTATUS); 1149 isp1362_hcd->rhport[0] = isp1362_read_reg32(isp1362_hcd, HCRHPORT1); 1150 isp1362_hcd->rhport[1] = isp1362_read_reg32(isp1362_hcd, HCRHPORT2); 1151 } 1152 if (intstat & OHCI_INTR_RD) { 1153 pr_info("%s: RESUME DETECTED\n", __func__); 1154 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1155 usb_hcd_resume_root_hub(hcd); 1156 } 1157 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, intstat); 1158 irqstat &= ~HCuPINT_OPR; 1159 handled = 1; 1160 } 1161 1162 if (irqstat & HCuPINT_SUSP) { 1163 isp1362_hcd->irq_stat[ISP1362_INT_SUSP]++; 1164 handled = 1; 1165 svc_mask &= ~HCuPINT_SUSP; 1166 1167 pr_info("%s: SUSPEND IRQ\n", __func__); 1168 } 1169 1170 if (irqstat & HCuPINT_CLKRDY) { 1171 isp1362_hcd->irq_stat[ISP1362_INT_CLKRDY]++; 1172 handled = 1; 1173 isp1362_hcd->irqenb &= ~HCuPINT_CLKRDY; 1174 svc_mask &= ~HCuPINT_CLKRDY; 1175 pr_info("%s: CLKRDY IRQ\n", __func__); 1176 } 1177 1178 if (svc_mask) 1179 pr_err("%s: Unserviced interrupt(s) %04x\n", __func__, svc_mask); 1180 1181 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 1182 isp1362_hcd->irq_active--; 1183 spin_unlock(&isp1362_hcd->lock); 1184 1185 return IRQ_RETVAL(handled); 1186} 1187 1188/*-------------------------------------------------------------------------*/ 1189 1190#define MAX_PERIODIC_LOAD 900 /* out of 1000 usec */ 1191static int balance(struct isp1362_hcd *isp1362_hcd, u16 interval, u16 load) 1192{ 1193 int i, branch = -ENOSPC; 1194 1195 /* search for the least loaded schedule branch of that interval 1196 * which has enough bandwidth left unreserved. 1197 */ 1198 for (i = 0; i < interval; i++) { 1199 if (branch < 0 || isp1362_hcd->load[branch] > isp1362_hcd->load[i]) { 1200 int j; 1201 1202 for (j = i; j < PERIODIC_SIZE; j += interval) { 1203 if ((isp1362_hcd->load[j] + load) > MAX_PERIODIC_LOAD) { 1204 pr_err("%s: new load %d load[%02x] %d max %d\n", __func__, 1205 load, j, isp1362_hcd->load[j], MAX_PERIODIC_LOAD); 1206 break; 1207 } 1208 } 1209 if (j < PERIODIC_SIZE) 1210 continue; 1211 branch = i; 1212 } 1213 } 1214 return branch; 1215} 1216 1217/* NB! ALL the code above this point runs with isp1362_hcd->lock 1218 held, irqs off 1219*/ 1220 1221/*-------------------------------------------------------------------------*/ 1222 1223static int isp1362_urb_enqueue(struct usb_hcd *hcd, 1224 struct urb *urb, 1225 gfp_t mem_flags) 1226{ 1227 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1228 struct usb_device *udev = urb->dev; 1229 unsigned int pipe = urb->pipe; 1230 int is_out = !usb_pipein(pipe); 1231 int type = usb_pipetype(pipe); 1232 int epnum = usb_pipeendpoint(pipe); 1233 struct usb_host_endpoint *hep = urb->ep; 1234 struct isp1362_ep *ep = NULL; 1235 unsigned long flags; 1236 int retval = 0; 1237 1238 DBG(3, "%s: urb %p\n", __func__, urb); 1239 1240 if (type == PIPE_ISOCHRONOUS) { 1241 pr_err("Isochronous transfers not supported\n"); 1242 return -ENOSPC; 1243 } 1244 1245 URB_DBG("%s: FA %d ep%d%s %s: len %d %s%s\n", __func__, 1246 usb_pipedevice(pipe), epnum, 1247 is_out ? "out" : "in", 1248 usb_pipecontrol(pipe) ? "ctrl" : 1249 usb_pipeint(pipe) ? "int" : 1250 usb_pipebulk(pipe) ? "bulk" : 1251 "iso", 1252 urb->transfer_buffer_length, 1253 (urb->transfer_flags & URB_ZERO_PACKET) ? "ZERO_PACKET " : "", 1254 !(urb->transfer_flags & URB_SHORT_NOT_OK) ? 1255 "short_ok" : ""); 1256 1257 /* avoid all allocations within spinlocks: request or endpoint */ 1258 if (!hep->hcpriv) { 1259 ep = kzalloc(sizeof *ep, mem_flags); 1260 if (!ep) 1261 return -ENOMEM; 1262 } 1263 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1264 1265 /* don't submit to a dead or disabled port */ 1266 if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) & 1267 USB_PORT_STAT_ENABLE) || 1268 !HC_IS_RUNNING(hcd->state)) { 1269 kfree(ep); 1270 retval = -ENODEV; 1271 goto fail_not_linked; 1272 } 1273 1274 retval = usb_hcd_link_urb_to_ep(hcd, urb); 1275 if (retval) { 1276 kfree(ep); 1277 goto fail_not_linked; 1278 } 1279 1280 if (hep->hcpriv) { 1281 ep = hep->hcpriv; 1282 } else { 1283 INIT_LIST_HEAD(&ep->schedule); 1284 INIT_LIST_HEAD(&ep->active); 1285 INIT_LIST_HEAD(&ep->remove_list); 1286 ep->udev = usb_get_dev(udev); 1287 ep->hep = hep; 1288 ep->epnum = epnum; 1289 ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); 1290 ep->ptd_offset = -EINVAL; 1291 ep->ptd_index = -EINVAL; 1292 usb_settoggle(udev, epnum, is_out, 0); 1293 1294 if (type == PIPE_CONTROL) 1295 ep->nextpid = USB_PID_SETUP; 1296 else if (is_out) 1297 ep->nextpid = USB_PID_OUT; 1298 else 1299 ep->nextpid = USB_PID_IN; 1300 1301 switch (type) { 1302 case PIPE_ISOCHRONOUS: 1303 case PIPE_INTERRUPT: 1304 if (urb->interval > PERIODIC_SIZE) 1305 urb->interval = PERIODIC_SIZE; 1306 ep->interval = urb->interval; 1307 ep->branch = PERIODIC_SIZE; 1308 ep->load = usb_calc_bus_time(udev->speed, !is_out, 1309 (type == PIPE_ISOCHRONOUS), 1310 usb_maxpacket(udev, pipe, is_out)) / 1000; 1311 break; 1312 } 1313 hep->hcpriv = ep; 1314 } 1315 ep->num_req = isp1362_hcd->req_serial++; 1316 1317 /* maybe put endpoint into schedule */ 1318 switch (type) { 1319 case PIPE_CONTROL: 1320 case PIPE_BULK: 1321 if (list_empty(&ep->schedule)) { 1322 DBG(1, "%s: Adding ep %p req %d to async schedule\n", 1323 __func__, ep, ep->num_req); 1324 list_add_tail(&ep->schedule, &isp1362_hcd->async); 1325 } 1326 break; 1327 case PIPE_ISOCHRONOUS: 1328 case PIPE_INTERRUPT: 1329 urb->interval = ep->interval; 1330 1331 /* urb submitted for already existing EP */ 1332 if (ep->branch < PERIODIC_SIZE) 1333 break; 1334 1335 retval = balance(isp1362_hcd, ep->interval, ep->load); 1336 if (retval < 0) { 1337 pr_err("%s: balance returned %d\n", __func__, retval); 1338 goto fail; 1339 } 1340 ep->branch = retval; 1341 retval = 0; 1342 isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1343 DBG(1, "%s: Current frame %04x branch %02x start_frame %04x(%04x)\n", 1344 __func__, isp1362_hcd->fmindex, ep->branch, 1345 ((isp1362_hcd->fmindex + PERIODIC_SIZE - 1) & 1346 ~(PERIODIC_SIZE - 1)) + ep->branch, 1347 (isp1362_hcd->fmindex & (PERIODIC_SIZE - 1)) + ep->branch); 1348 1349 if (list_empty(&ep->schedule)) { 1350 if (type == PIPE_ISOCHRONOUS) { 1351 u16 frame = isp1362_hcd->fmindex; 1352 1353 frame += max_t(u16, 8, ep->interval); 1354 frame &= ~(ep->interval - 1); 1355 frame |= ep->branch; 1356 if (frame_before(frame, isp1362_hcd->fmindex)) 1357 frame += ep->interval; 1358 urb->start_frame = frame; 1359 1360 DBG(1, "%s: Adding ep %p to isoc schedule\n", __func__, ep); 1361 list_add_tail(&ep->schedule, &isp1362_hcd->isoc); 1362 } else { 1363 DBG(1, "%s: Adding ep %p to periodic schedule\n", __func__, ep); 1364 list_add_tail(&ep->schedule, &isp1362_hcd->periodic); 1365 } 1366 } else 1367 DBG(1, "%s: ep %p already scheduled\n", __func__, ep); 1368 1369 DBG(2, "%s: load %d bandwidth %d -> %d\n", __func__, 1370 ep->load / ep->interval, isp1362_hcd->load[ep->branch], 1371 isp1362_hcd->load[ep->branch] + ep->load); 1372 isp1362_hcd->load[ep->branch] += ep->load; 1373 } 1374 1375 urb->hcpriv = hep; 1376 ALIGNSTAT(isp1362_hcd, urb->transfer_buffer); 1377 1378 switch (type) { 1379 case PIPE_CONTROL: 1380 case PIPE_BULK: 1381 start_atl_transfers(isp1362_hcd); 1382 break; 1383 case PIPE_INTERRUPT: 1384 start_intl_transfers(isp1362_hcd); 1385 break; 1386 case PIPE_ISOCHRONOUS: 1387 start_iso_transfers(isp1362_hcd); 1388 break; 1389 default: 1390 BUG(); 1391 } 1392 fail: 1393 if (retval) 1394 usb_hcd_unlink_urb_from_ep(hcd, urb); 1395 1396 1397 fail_not_linked: 1398 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1399 if (retval) 1400 DBG(0, "%s: urb %p failed with %d\n", __func__, urb, retval); 1401 return retval; 1402} 1403 1404static int isp1362_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) 1405{ 1406 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1407 struct usb_host_endpoint *hep; 1408 unsigned long flags; 1409 struct isp1362_ep *ep; 1410 int retval = 0; 1411 1412 DBG(3, "%s: urb %p\n", __func__, urb); 1413 1414 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1415 retval = usb_hcd_check_unlink_urb(hcd, urb, status); 1416 if (retval) 1417 goto done; 1418 1419 hep = urb->hcpriv; 1420 1421 if (!hep) { 1422 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1423 return -EIDRM; 1424 } 1425 1426 ep = hep->hcpriv; 1427 if (ep) { 1428 /* In front of queue? */ 1429 if (ep->hep->urb_list.next == &urb->urb_list) { 1430 if (!list_empty(&ep->active)) { 1431 DBG(1, "%s: urb %p ep %p req %d active PTD[%d] $%04x\n", __func__, 1432 urb, ep, ep->num_req, ep->ptd_index, ep->ptd_offset); 1433 /* disable processing and queue PTD for removal */ 1434 remove_ptd(isp1362_hcd, ep); 1435 urb = NULL; 1436 } 1437 } 1438 if (urb) { 1439 DBG(1, "%s: Finishing ep %p req %d\n", __func__, ep, 1440 ep->num_req); 1441 finish_request(isp1362_hcd, ep, urb, status); 1442 } else 1443 DBG(1, "%s: urb %p active; wait4irq\n", __func__, urb); 1444 } else { 1445 pr_warning("%s: No EP in URB %p\n", __func__, urb); 1446 retval = -EINVAL; 1447 } 1448done: 1449 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1450 1451 DBG(3, "%s: exit\n", __func__); 1452 1453 return retval; 1454} 1455 1456static void isp1362_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) 1457{ 1458 struct isp1362_ep *ep = hep->hcpriv; 1459 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1460 unsigned long flags; 1461 1462 DBG(1, "%s: ep %p\n", __func__, ep); 1463 if (!ep) 1464 return; 1465 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1466 if (!list_empty(&hep->urb_list)) { 1467 if (!list_empty(&ep->active) && list_empty(&ep->remove_list)) { 1468 DBG(1, "%s: Removing ep %p req %d PTD[%d] $%04x\n", __func__, 1469 ep, ep->num_req, ep->ptd_index, ep->ptd_offset); 1470 remove_ptd(isp1362_hcd, ep); 1471 pr_info("%s: Waiting for Interrupt to clean up\n", __func__); 1472 } 1473 } 1474 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1475 /* Wait for interrupt to clear out active list */ 1476 while (!list_empty(&ep->active)) 1477 msleep(1); 1478 1479 DBG(1, "%s: Freeing EP %p\n", __func__, ep); 1480 1481 usb_put_dev(ep->udev); 1482 kfree(ep); 1483 hep->hcpriv = NULL; 1484} 1485 1486static int isp1362_get_frame(struct usb_hcd *hcd) 1487{ 1488 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1489 u32 fmnum; 1490 unsigned long flags; 1491 1492 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1493 fmnum = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1494 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1495 1496 return (int)fmnum; 1497} 1498 1499/*-------------------------------------------------------------------------*/ 1500 1501/* Adapted from ohci-hub.c */ 1502static int isp1362_hub_status_data(struct usb_hcd *hcd, char *buf) 1503{ 1504 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1505 int ports, i, changed = 0; 1506 unsigned long flags; 1507 1508 if (!HC_IS_RUNNING(hcd->state)) 1509 return -ESHUTDOWN; 1510 1511 /* Report no status change now, if we are scheduled to be 1512 called later */ 1513 if (timer_pending(&hcd->rh_timer)) 1514 return 0; 1515 1516 ports = isp1362_hcd->rhdesca & RH_A_NDP; 1517 BUG_ON(ports > 2); 1518 1519 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1520 /* init status */ 1521 if (isp1362_hcd->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) 1522 buf[0] = changed = 1; 1523 else 1524 buf[0] = 0; 1525 1526 for (i = 0; i < ports; i++) { 1527 u32 status = isp1362_hcd->rhport[i]; 1528 1529 if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | 1530 RH_PS_OCIC | RH_PS_PRSC)) { 1531 changed = 1; 1532 buf[0] |= 1 << (i + 1); 1533 continue; 1534 } 1535 1536 if (!(status & RH_PS_CCS)) 1537 continue; 1538 } 1539 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1540 return changed; 1541} 1542 1543static void isp1362_hub_descriptor(struct isp1362_hcd *isp1362_hcd, 1544 struct usb_hub_descriptor *desc) 1545{ 1546 u32 reg = isp1362_hcd->rhdesca; 1547 1548 DBG(3, "%s: enter\n", __func__); 1549 1550 desc->bDescriptorType = 0x29; 1551 desc->bDescLength = 9; 1552 desc->bHubContrCurrent = 0; 1553 desc->bNbrPorts = reg & 0x3; 1554 /* Power switching, device type, overcurrent. */ 1555 desc->wHubCharacteristics = cpu_to_le16((reg >> 8) & 0x1f); 1556 DBG(0, "%s: hubcharacteristics = %02x\n", __func__, cpu_to_le16((reg >> 8) & 0x1f)); 1557 desc->bPwrOn2PwrGood = (reg >> 24) & 0xff; 1558 /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */ 1559 desc->bitmap[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1; 1560 desc->bitmap[1] = ~0; 1561 1562 DBG(3, "%s: exit\n", __func__); 1563} 1564 1565/* Adapted from ohci-hub.c */ 1566static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 1567 u16 wIndex, char *buf, u16 wLength) 1568{ 1569 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1570 int retval = 0; 1571 unsigned long flags; 1572 unsigned long t1; 1573 int ports = isp1362_hcd->rhdesca & RH_A_NDP; 1574 u32 tmp = 0; 1575 1576 switch (typeReq) { 1577 case ClearHubFeature: 1578 DBG(0, "ClearHubFeature: "); 1579 switch (wValue) { 1580 case C_HUB_OVER_CURRENT: 1581 _DBG(0, "C_HUB_OVER_CURRENT\n"); 1582 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1583 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_OCIC); 1584 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1585 case C_HUB_LOCAL_POWER: 1586 _DBG(0, "C_HUB_LOCAL_POWER\n"); 1587 break; 1588 default: 1589 goto error; 1590 } 1591 break; 1592 case SetHubFeature: 1593 DBG(0, "SetHubFeature: "); 1594 switch (wValue) { 1595 case C_HUB_OVER_CURRENT: 1596 case C_HUB_LOCAL_POWER: 1597 _DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); 1598 break; 1599 default: 1600 goto error; 1601 } 1602 break; 1603 case GetHubDescriptor: 1604 DBG(0, "GetHubDescriptor\n"); 1605 isp1362_hub_descriptor(isp1362_hcd, (struct usb_hub_descriptor *)buf); 1606 break; 1607 case GetHubStatus: 1608 DBG(0, "GetHubStatus\n"); 1609 put_unaligned(cpu_to_le32(0), (__le32 *) buf); 1610 break; 1611 case GetPortStatus: 1612#ifndef VERBOSE 1613 DBG(0, "GetPortStatus\n"); 1614#endif 1615 if (!wIndex || wIndex > ports) 1616 goto error; 1617 tmp = isp1362_hcd->rhport[--wIndex]; 1618 put_unaligned(cpu_to_le32(tmp), (__le32 *) buf); 1619 break; 1620 case ClearPortFeature: 1621 DBG(0, "ClearPortFeature: "); 1622 if (!wIndex || wIndex > ports) 1623 goto error; 1624 wIndex--; 1625 1626 switch (wValue) { 1627 case USB_PORT_FEAT_ENABLE: 1628 _DBG(0, "USB_PORT_FEAT_ENABLE\n"); 1629 tmp = RH_PS_CCS; 1630 break; 1631 case USB_PORT_FEAT_C_ENABLE: 1632 _DBG(0, "USB_PORT_FEAT_C_ENABLE\n"); 1633 tmp = RH_PS_PESC; 1634 break; 1635 case USB_PORT_FEAT_SUSPEND: 1636 _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); 1637 tmp = RH_PS_POCI; 1638 break; 1639 case USB_PORT_FEAT_C_SUSPEND: 1640 _DBG(0, "USB_PORT_FEAT_C_SUSPEND\n"); 1641 tmp = RH_PS_PSSC; 1642 break; 1643 case USB_PORT_FEAT_POWER: 1644 _DBG(0, "USB_PORT_FEAT_POWER\n"); 1645 tmp = RH_PS_LSDA; 1646 1647 break; 1648 case USB_PORT_FEAT_C_CONNECTION: 1649 _DBG(0, "USB_PORT_FEAT_C_CONNECTION\n"); 1650 tmp = RH_PS_CSC; 1651 break; 1652 case USB_PORT_FEAT_C_OVER_CURRENT: 1653 _DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n"); 1654 tmp = RH_PS_OCIC; 1655 break; 1656 case USB_PORT_FEAT_C_RESET: 1657 _DBG(0, "USB_PORT_FEAT_C_RESET\n"); 1658 tmp = RH_PS_PRSC; 1659 break; 1660 default: 1661 goto error; 1662 } 1663 1664 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1665 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, tmp); 1666 isp1362_hcd->rhport[wIndex] = 1667 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1668 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1669 break; 1670 case SetPortFeature: 1671 DBG(0, "SetPortFeature: "); 1672 if (!wIndex || wIndex > ports) 1673 goto error; 1674 wIndex--; 1675 switch (wValue) { 1676 case USB_PORT_FEAT_SUSPEND: 1677 _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); 1678#ifdef CONFIG_USB_OTG 1679 if (ohci->hcd.self.otg_port == (wIndex + 1) && 1680 ohci->hcd.self.b_hnp_enable) { 1681 start_hnp(ohci); 1682 break; 1683 } 1684#endif 1685 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1686 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS); 1687 isp1362_hcd->rhport[wIndex] = 1688 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1689 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1690 break; 1691 case USB_PORT_FEAT_POWER: 1692 _DBG(0, "USB_PORT_FEAT_POWER\n"); 1693 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1694 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS); 1695 isp1362_hcd->rhport[wIndex] = 1696 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1697 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1698 break; 1699 case USB_PORT_FEAT_RESET: 1700 _DBG(0, "USB_PORT_FEAT_RESET\n"); 1701 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1702 1703 t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH); 1704 while (time_before(jiffies, t1)) { 1705 /* spin until any current reset finishes */ 1706 for (;;) { 1707 tmp = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1708 if (!(tmp & RH_PS_PRS)) 1709 break; 1710 udelay(500); 1711 } 1712 if (!(tmp & RH_PS_CCS)) 1713 break; 1714 /* Reset lasts 10ms (claims datasheet) */ 1715 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, (RH_PS_PRS)); 1716 1717 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1718 msleep(10); 1719 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1720 } 1721 1722 isp1362_hcd->rhport[wIndex] = isp1362_read_reg32(isp1362_hcd, 1723 HCRHPORT1 + wIndex); 1724 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1725 break; 1726 default: 1727 goto error; 1728 } 1729 break; 1730 1731 default: 1732 error: 1733 /* "protocol stall" on error */ 1734 _DBG(0, "PROTOCOL STALL\n"); 1735 retval = -EPIPE; 1736 } 1737 1738 return retval; 1739} 1740 1741#ifdef CONFIG_PM 1742static int isp1362_bus_suspend(struct usb_hcd *hcd) 1743{ 1744 int status = 0; 1745 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1746 unsigned long flags; 1747 1748 if (time_before(jiffies, isp1362_hcd->next_statechange)) 1749 msleep(5); 1750 1751 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1752 1753 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1754 switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { 1755 case OHCI_USB_RESUME: 1756 DBG(0, "%s: resume/suspend?\n", __func__); 1757 isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; 1758 isp1362_hcd->hc_control |= OHCI_USB_RESET; 1759 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1760 /* FALL THROUGH */ 1761 case OHCI_USB_RESET: 1762 status = -EBUSY; 1763 pr_warning("%s: needs reinit!\n", __func__); 1764 goto done; 1765 case OHCI_USB_SUSPEND: 1766 pr_warning("%s: already suspended?\n", __func__); 1767 goto done; 1768 } 1769 DBG(0, "%s: suspend root hub\n", __func__); 1770 1771 /* First stop any processing */ 1772 hcd->state = HC_STATE_QUIESCING; 1773 if (!list_empty(&isp1362_hcd->atl_queue.active) || 1774 !list_empty(&isp1362_hcd->intl_queue.active) || 1775 !list_empty(&isp1362_hcd->istl_queue[0] .active) || 1776 !list_empty(&isp1362_hcd->istl_queue[1] .active)) { 1777 int limit; 1778 1779 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); 1780 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); 1781 isp1362_write_reg16(isp1362_hcd, HCBUFSTAT, 0); 1782 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 1783 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, OHCI_INTR_SF); 1784 1785 DBG(0, "%s: stopping schedules ...\n", __func__); 1786 limit = 2000; 1787 while (limit > 0) { 1788 udelay(250); 1789 limit -= 250; 1790 if (isp1362_read_reg32(isp1362_hcd, HCINTSTAT) & OHCI_INTR_SF) 1791 break; 1792 } 1793 mdelay(7); 1794 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ATL) { 1795 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); 1796 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); 1797 } 1798 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_INTL) { 1799 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); 1800 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); 1801 } 1802 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL0) 1803 finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[0]); 1804 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL1) 1805 finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[1]); 1806 } 1807 DBG(0, "%s: HCINTSTAT: %08x\n", __func__, 1808 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1809 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, 1810 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1811 1812 /* Suspend hub */ 1813 isp1362_hcd->hc_control = OHCI_USB_SUSPEND; 1814 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1815 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1816 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1817 1818 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1819 if ((isp1362_hcd->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_SUSPEND) { 1820 pr_err("%s: controller won't suspend %08x\n", __func__, 1821 isp1362_hcd->hc_control); 1822 status = -EBUSY; 1823 } else 1824 { 1825 /* no resumes until devices finish suspending */ 1826 isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(5); 1827 } 1828done: 1829 if (status == 0) { 1830 hcd->state = HC_STATE_SUSPENDED; 1831 DBG(0, "%s: HCD suspended: %08x\n", __func__, 1832 isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 1833 } 1834 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1835 return status; 1836} 1837 1838static int isp1362_bus_resume(struct usb_hcd *hcd) 1839{ 1840 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1841 u32 port; 1842 unsigned long flags; 1843 int status = -EINPROGRESS; 1844 1845 if (time_before(jiffies, isp1362_hcd->next_statechange)) 1846 msleep(5); 1847 1848 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1849 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1850 pr_info("%s: HCCONTROL: %08x\n", __func__, isp1362_hcd->hc_control); 1851 if (hcd->state == HC_STATE_RESUMING) { 1852 pr_warning("%s: duplicate resume\n", __func__); 1853 status = 0; 1854 } else 1855 switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { 1856 case OHCI_USB_SUSPEND: 1857 DBG(0, "%s: resume root hub\n", __func__); 1858 isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; 1859 isp1362_hcd->hc_control |= OHCI_USB_RESUME; 1860 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1861 break; 1862 case OHCI_USB_RESUME: 1863 /* HCFS changes sometime after INTR_RD */ 1864 DBG(0, "%s: remote wakeup\n", __func__); 1865 break; 1866 case OHCI_USB_OPER: 1867 DBG(0, "%s: odd resume\n", __func__); 1868 status = 0; 1869 hcd->self.root_hub->dev.power.power_state = PMSG_ON; 1870 break; 1871 default: /* RESET, we lost power */ 1872 DBG(0, "%s: root hub hardware reset\n", __func__); 1873 status = -EBUSY; 1874 } 1875 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1876 if (status == -EBUSY) { 1877 DBG(0, "%s: Restarting HC\n", __func__); 1878 isp1362_hc_stop(hcd); 1879 return isp1362_hc_start(hcd); 1880 } 1881 if (status != -EINPROGRESS) 1882 return status; 1883 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1884 port = isp1362_read_reg32(isp1362_hcd, HCRHDESCA) & RH_A_NDP; 1885 while (port--) { 1886 u32 stat = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + port); 1887 1888 /* force global, not selective, resume */ 1889 if (!(stat & RH_PS_PSS)) { 1890 DBG(0, "%s: Not Resuming RH port %d\n", __func__, port); 1891 continue; 1892 } 1893 DBG(0, "%s: Resuming RH port %d\n", __func__, port); 1894 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + port, RH_PS_POCI); 1895 } 1896 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1897 1898 /* Some controllers (lucent) need extra-long delays */ 1899 hcd->state = HC_STATE_RESUMING; 1900 mdelay(20 /* usb 11.5.1.10 */ + 15); 1901 1902 isp1362_hcd->hc_control = OHCI_USB_OPER; 1903 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1904 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1905 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1906 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1907 /* TRSMRCY */ 1908 msleep(10); 1909 1910 /* keep it alive for ~5x suspend + resume costs */ 1911 isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(250); 1912 1913 hcd->self.root_hub->dev.power.power_state = PMSG_ON; 1914 hcd->state = HC_STATE_RUNNING; 1915 return 0; 1916} 1917#else 1918#define isp1362_bus_suspend NULL 1919#define isp1362_bus_resume NULL 1920#endif 1921 1922/*-------------------------------------------------------------------------*/ 1923 1924#ifdef STUB_DEBUG_FILE 1925 1926static inline void create_debug_file(struct isp1362_hcd *isp1362_hcd) 1927{ 1928} 1929static inline void remove_debug_file(struct isp1362_hcd *isp1362_hcd) 1930{ 1931} 1932 1933#else 1934 1935#include <linux/proc_fs.h> 1936#include <linux/seq_file.h> 1937 1938static void dump_irq(struct seq_file *s, char *label, u16 mask) 1939{ 1940 seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask, 1941 mask & HCuPINT_CLKRDY ? " clkrdy" : "", 1942 mask & HCuPINT_SUSP ? " susp" : "", 1943 mask & HCuPINT_OPR ? " opr" : "", 1944 mask & HCuPINT_EOT ? " eot" : "", 1945 mask & HCuPINT_ATL ? " atl" : "", 1946 mask & HCuPINT_SOF ? " sof" : ""); 1947} 1948 1949static void dump_int(struct seq_file *s, char *label, u32 mask) 1950{ 1951 seq_printf(s, "%-15s %08x%s%s%s%s%s%s%s\n", label, mask, 1952 mask & OHCI_INTR_MIE ? " MIE" : "", 1953 mask & OHCI_INTR_RHSC ? " rhsc" : "", 1954 mask & OHCI_INTR_FNO ? " fno" : "", 1955 mask & OHCI_INTR_UE ? " ue" : "", 1956 mask & OHCI_INTR_RD ? " rd" : "", 1957 mask & OHCI_INTR_SF ? " sof" : "", 1958 mask & OHCI_INTR_SO ? " so" : ""); 1959} 1960 1961static void dump_ctrl(struct seq_file *s, char *label, u32 mask) 1962{ 1963 seq_printf(s, "%-15s %08x%s%s%s\n", label, mask, 1964 mask & OHCI_CTRL_RWC ? " rwc" : "", 1965 mask & OHCI_CTRL_RWE ? " rwe" : "", 1966 ({ 1967 char *hcfs; 1968 switch (mask & OHCI_CTRL_HCFS) { 1969 case OHCI_USB_OPER: 1970 hcfs = " oper"; 1971 break; 1972 case OHCI_USB_RESET: 1973 hcfs = " reset"; 1974 break; 1975 case OHCI_USB_RESUME: 1976 hcfs = " resume"; 1977 break; 1978 case OHCI_USB_SUSPEND: 1979 hcfs = " suspend"; 1980 break; 1981 default: 1982 hcfs = " ?"; 1983 } 1984 hcfs; 1985 })); 1986} 1987 1988static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd) 1989{ 1990 seq_printf(s, "HCREVISION [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCREVISION), 1991 isp1362_read_reg32(isp1362_hcd, HCREVISION)); 1992 seq_printf(s, "HCCONTROL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCONTROL), 1993 isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 1994 seq_printf(s, "HCCMDSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCMDSTAT), 1995 isp1362_read_reg32(isp1362_hcd, HCCMDSTAT)); 1996 seq_printf(s, "HCINTSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTSTAT), 1997 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1998 seq_printf(s, "HCINTENB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTENB), 1999 isp1362_read_reg32(isp1362_hcd, HCINTENB)); 2000 seq_printf(s, "HCFMINTVL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMINTVL), 2001 isp1362_read_reg32(isp1362_hcd, HCFMINTVL)); 2002 seq_printf(s, "HCFMREM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMREM), 2003 isp1362_read_reg32(isp1362_hcd, HCFMREM)); 2004 seq_printf(s, "HCFMNUM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMNUM), 2005 isp1362_read_reg32(isp1362_hcd, HCFMNUM)); 2006 seq_printf(s, "HCLSTHRESH [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCLSTHRESH), 2007 isp1362_read_reg32(isp1362_hcd, HCLSTHRESH)); 2008 seq_printf(s, "HCRHDESCA [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCA), 2009 isp1362_read_reg32(isp1362_hcd, HCRHDESCA)); 2010 seq_printf(s, "HCRHDESCB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCB), 2011 isp1362_read_reg32(isp1362_hcd, HCRHDESCB)); 2012 seq_printf(s, "HCRHSTATUS [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHSTATUS), 2013 isp1362_read_reg32(isp1362_hcd, HCRHSTATUS)); 2014 seq_printf(s, "HCRHPORT1 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT1), 2015 isp1362_read_reg32(isp1362_hcd, HCRHPORT1)); 2016 seq_printf(s, "HCRHPORT2 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT2), 2017 isp1362_read_reg32(isp1362_hcd, HCRHPORT2)); 2018 seq_printf(s, "\n"); 2019 seq_printf(s, "HCHWCFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCHWCFG), 2020 isp1362_read_reg16(isp1362_hcd, HCHWCFG)); 2021 seq_printf(s, "HCDMACFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCDMACFG), 2022 isp1362_read_reg16(isp1362_hcd, HCDMACFG)); 2023 seq_printf(s, "HCXFERCTR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCXFERCTR), 2024 isp1362_read_reg16(isp1362_hcd, HCXFERCTR)); 2025 seq_printf(s, "HCuPINT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINT), 2026 isp1362_read_reg16(isp1362_hcd, HCuPINT)); 2027 seq_printf(s, "HCuPINTENB [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINTENB), 2028 isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); 2029 seq_printf(s, "HCCHIPID [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCCHIPID), 2030 isp1362_read_reg16(isp1362_hcd, HCCHIPID)); 2031 seq_printf(s, "HCSCRATCH [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCSCRATCH), 2032 isp1362_read_reg16(isp1362_hcd, HCSCRATCH)); 2033 seq_printf(s, "HCBUFSTAT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCBUFSTAT), 2034 isp1362_read_reg16(isp1362_hcd, HCBUFSTAT)); 2035 seq_printf(s, "HCDIRADDR [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCDIRADDR), 2036 isp1362_read_reg32(isp1362_hcd, HCDIRADDR)); 2037 seq_printf(s, "HCISTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLBUFSZ), 2038 isp1362_read_reg16(isp1362_hcd, HCISTLBUFSZ)); 2039 seq_printf(s, "HCISTLRATE [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLRATE), 2040 isp1362_read_reg16(isp1362_hcd, HCISTLRATE)); 2041 seq_printf(s, "\n"); 2042 seq_printf(s, "HCINTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBUFSZ), 2043 isp1362_read_reg16(isp1362_hcd, HCINTLBUFSZ)); 2044 seq_printf(s, "HCINTLBLKSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBLKSZ), 2045 isp1362_read_reg16(isp1362_hcd, HCINTLBLKSZ)); 2046 seq_printf(s, "HCINTLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLDONE), 2047 isp1362_read_reg32(isp1362_hcd, HCINTLDONE)); 2048 seq_printf(s, "HCINTLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLSKIP), 2049 isp1362_read_reg32(isp1362_hcd, HCINTLSKIP)); 2050 seq_printf(s, "HCINTLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLLAST), 2051 isp1362_read_reg32(isp1362_hcd, HCINTLLAST)); 2052 seq_printf(s, "HCINTLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLCURR), 2053 isp1362_read_reg16(isp1362_hcd, HCINTLCURR)); 2054 seq_printf(s, "\n"); 2055 seq_printf(s, "HCATLBUFSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBUFSZ), 2056 isp1362_read_reg16(isp1362_hcd, HCATLBUFSZ)); 2057 seq_printf(s, "HCATLBLKSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBLKSZ), 2058 isp1362_read_reg16(isp1362_hcd, HCATLBLKSZ)); 2059 seq_printf(s, "HCATLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLSKIP), 2060 isp1362_read_reg32(isp1362_hcd, HCATLSKIP)); 2061 seq_printf(s, "HCATLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLLAST), 2062 isp1362_read_reg32(isp1362_hcd, HCATLLAST)); 2063 seq_printf(s, "HCATLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLCURR), 2064 isp1362_read_reg16(isp1362_hcd, HCATLCURR)); 2065 seq_printf(s, "\n"); 2066 seq_printf(s, "HCATLDTC [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTC), 2067 isp1362_read_reg16(isp1362_hcd, HCATLDTC)); 2068 seq_printf(s, "HCATLDTCTO [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTCTO), 2069 isp1362_read_reg16(isp1362_hcd, HCATLDTCTO)); 2070} 2071 2072static int proc_isp1362_show(struct seq_file *s, void *unused) 2073{ 2074 struct isp1362_hcd *isp1362_hcd = s->private; 2075 struct isp1362_ep *ep; 2076 int i; 2077 2078 seq_printf(s, "%s\n%s version %s\n", 2079 isp1362_hcd_to_hcd(isp1362_hcd)->product_desc, hcd_name, DRIVER_VERSION); 2080 2081 /* collect statistics to help estimate potential win for 2082 * DMA engines that care about alignment (PXA) 2083 */ 2084 seq_printf(s, "alignment: 16b/%ld 8b/%ld 4b/%ld 2b/%ld 1b/%ld\n", 2085 isp1362_hcd->stat16, isp1362_hcd->stat8, isp1362_hcd->stat4, 2086 isp1362_hcd->stat2, isp1362_hcd->stat1); 2087 seq_printf(s, "max # ptds in ATL fifo: %d\n", isp1362_hcd->atl_queue.stat_maxptds); 2088 seq_printf(s, "max # ptds in INTL fifo: %d\n", isp1362_hcd->intl_queue.stat_maxptds); 2089 seq_printf(s, "max # ptds in ISTL fifo: %d\n", 2090 max(isp1362_hcd->istl_queue[0] .stat_maxptds, 2091 isp1362_hcd->istl_queue[1] .stat_maxptds)); 2092 2093 spin_lock_irq(&isp1362_hcd->lock); 2094 2095 dump_irq(s, "hc_irq_enable", isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); 2096 dump_irq(s, "hc_irq_status", isp1362_read_reg16(isp1362_hcd, HCuPINT)); 2097 dump_int(s, "ohci_int_enable", isp1362_read_reg32(isp1362_hcd, HCINTENB)); 2098 dump_int(s, "ohci_int_status", isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 2099 dump_ctrl(s, "ohci_control", isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 2100 2101 for (i = 0; i < NUM_ISP1362_IRQS; i++) 2102 if (isp1362_hcd->irq_stat[i]) 2103 seq_printf(s, "%-15s: %d\n", 2104 ISP1362_INT_NAME(i), isp1362_hcd->irq_stat[i]); 2105 2106 dump_regs(s, isp1362_hcd); 2107 list_for_each_entry(ep, &isp1362_hcd->async, schedule) { 2108 struct urb *urb; 2109 2110 seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, ep->epnum, 2111 ({ 2112 char *s; 2113 switch (ep->nextpid) { 2114 case USB_PID_IN: 2115 s = "in"; 2116 break; 2117 case USB_PID_OUT: 2118 s = "out"; 2119 break; 2120 case USB_PID_SETUP: 2121 s = "setup"; 2122 break; 2123 case USB_PID_ACK: 2124 s = "status"; 2125 break; 2126 default: 2127 s = "?"; 2128 break; 2129 }; 2130 s;}), ep->maxpacket) ; 2131 list_for_each_entry(urb, &ep->hep->urb_list, urb_list) { 2132 seq_printf(s, " urb%p, %d/%d\n", urb, 2133 urb->actual_length, 2134 urb->transfer_buffer_length); 2135 } 2136 } 2137 if (!list_empty(&isp1362_hcd->async)) 2138 seq_printf(s, "\n"); 2139 dump_ptd_queue(&isp1362_hcd->atl_queue); 2140 2141 seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE); 2142 2143 list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { 2144 seq_printf(s, "branch:%2d load:%3d PTD[%d] $%04x:\n", ep->branch, 2145 isp1362_hcd->load[ep->branch], ep->ptd_index, ep->ptd_offset); 2146 2147 seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", 2148 ep->interval, ep, 2149 (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", 2150 ep->udev->devnum, ep->epnum, 2151 (ep->epnum == 0) ? "" : 2152 ((ep->nextpid == USB_PID_IN) ? 2153 "in" : "out"), ep->maxpacket); 2154 } 2155 dump_ptd_queue(&isp1362_hcd->intl_queue); 2156 2157 seq_printf(s, "ISO:\n"); 2158 2159 list_for_each_entry(ep, &isp1362_hcd->isoc, schedule) { 2160 seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", 2161 ep->interval, ep, 2162 (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", 2163 ep->udev->devnum, ep->epnum, 2164 (ep->epnum == 0) ? "" : 2165 ((ep->nextpid == USB_PID_IN) ? 2166 "in" : "out"), ep->maxpacket); 2167 } 2168 2169 spin_unlock_irq(&isp1362_hcd->lock); 2170 seq_printf(s, "\n"); 2171 2172 return 0; 2173} 2174 2175static int proc_isp1362_open(struct inode *inode, struct file *file) 2176{ 2177 return single_open(file, proc_isp1362_show, PDE(inode)->data); 2178} 2179 2180static const struct file_operations proc_ops = { 2181 .open = proc_isp1362_open, 2182 .read = seq_read, 2183 .llseek = seq_lseek, 2184 .release = single_release, 2185}; 2186 2187/* expect just one isp1362_hcd per system */ 2188static const char proc_filename[] = "driver/isp1362"; 2189 2190static void create_debug_file(struct isp1362_hcd *isp1362_hcd) 2191{ 2192 struct proc_dir_entry *pde; 2193 2194 pde = create_proc_entry(proc_filename, 0, NULL); 2195 if (pde == NULL) { 2196 pr_warning("%s: Failed to create debug file '%s'\n", __func__, proc_filename); 2197 return; 2198 } 2199 2200 pde->proc_fops = &proc_ops; 2201 pde->data = isp1362_hcd; 2202 isp1362_hcd->pde = pde; 2203} 2204 2205static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) 2206{ 2207 if (isp1362_hcd->pde) 2208 remove_proc_entry(proc_filename, NULL); 2209} 2210 2211#endif 2212 2213/*-------------------------------------------------------------------------*/ 2214 2215static void __isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) 2216{ 2217 int tmp = 20; 2218 2219 isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC); 2220 isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR); 2221 while (--tmp) { 2222 mdelay(1); 2223 if (!(isp1362_read_reg32(isp1362_hcd, HCCMDSTAT) & OHCI_HCR)) 2224 break; 2225 } 2226 if (!tmp) 2227 pr_err("Software reset timeout\n"); 2228} 2229 2230static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) 2231{ 2232 unsigned long flags; 2233 2234 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2235 __isp1362_sw_reset(isp1362_hcd); 2236 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2237} 2238 2239static int isp1362_mem_config(struct usb_hcd *hcd) 2240{ 2241 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2242 unsigned long flags; 2243 u32 total; 2244 u16 istl_size = ISP1362_ISTL_BUFSIZE; 2245 u16 intl_blksize = ISP1362_INTL_BLKSIZE + PTD_HEADER_SIZE; 2246 u16 intl_size = ISP1362_INTL_BUFFERS * intl_blksize; 2247 u16 atl_blksize = ISP1362_ATL_BLKSIZE + PTD_HEADER_SIZE; 2248 u16 atl_buffers = (ISP1362_BUF_SIZE - (istl_size + intl_size)) / atl_blksize; 2249 u16 atl_size; 2250 int i; 2251 2252 WARN_ON(istl_size & 3); 2253 WARN_ON(atl_blksize & 3); 2254 WARN_ON(intl_blksize & 3); 2255 WARN_ON(atl_blksize < PTD_HEADER_SIZE); 2256 WARN_ON(intl_blksize < PTD_HEADER_SIZE); 2257 2258 BUG_ON((unsigned)ISP1362_INTL_BUFFERS > 32); 2259 if (atl_buffers > 32) 2260 atl_buffers = 32; 2261 atl_size = atl_buffers * atl_blksize; 2262 total = atl_size + intl_size + istl_size; 2263 dev_info(hcd->self.controller, "ISP1362 Memory usage:\n"); 2264 dev_info(hcd->self.controller, " ISTL: 2 * %4d: %4d @ $%04x:$%04x\n", 2265 istl_size / 2, istl_size, 0, istl_size / 2); 2266 dev_info(hcd->self.controller, " INTL: %4d * (%3zu+8): %4d @ $%04x\n", 2267 ISP1362_INTL_BUFFERS, intl_blksize - PTD_HEADER_SIZE, 2268 intl_size, istl_size); 2269 dev_info(hcd->self.controller, " ATL : %4d * (%3zu+8): %4d @ $%04x\n", 2270 atl_buffers, atl_blksize - PTD_HEADER_SIZE, 2271 atl_size, istl_size + intl_size); 2272 dev_info(hcd->self.controller, " USED/FREE: %4d %4d\n", total, 2273 ISP1362_BUF_SIZE - total); 2274 2275 if (total > ISP1362_BUF_SIZE) { 2276 dev_err(hcd->self.controller, "%s: Memory requested: %d, available %d\n", 2277 __func__, total, ISP1362_BUF_SIZE); 2278 return -ENOMEM; 2279 } 2280 2281 total = istl_size + intl_size + atl_size; 2282 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2283 2284 for (i = 0; i < 2; i++) { 2285 isp1362_hcd->istl_queue[i].buf_start = i * istl_size / 2, 2286 isp1362_hcd->istl_queue[i].buf_size = istl_size / 2; 2287 isp1362_hcd->istl_queue[i].blk_size = 4; 2288 INIT_LIST_HEAD(&isp1362_hcd->istl_queue[i].active); 2289 snprintf(isp1362_hcd->istl_queue[i].name, 2290 sizeof(isp1362_hcd->istl_queue[i].name), "ISTL%d", i); 2291 DBG(3, "%s: %5s buf $%04x %d\n", __func__, 2292 isp1362_hcd->istl_queue[i].name, 2293 isp1362_hcd->istl_queue[i].buf_start, 2294 isp1362_hcd->istl_queue[i].buf_size); 2295 } 2296 isp1362_write_reg16(isp1362_hcd, HCISTLBUFSZ, istl_size / 2); 2297 2298 isp1362_hcd->intl_queue.buf_start = istl_size; 2299 isp1362_hcd->intl_queue.buf_size = intl_size; 2300 isp1362_hcd->intl_queue.buf_count = ISP1362_INTL_BUFFERS; 2301 isp1362_hcd->intl_queue.blk_size = intl_blksize; 2302 isp1362_hcd->intl_queue.buf_avail = isp1362_hcd->intl_queue.buf_count; 2303 isp1362_hcd->intl_queue.skip_map = ~0; 2304 INIT_LIST_HEAD(&isp1362_hcd->intl_queue.active); 2305 2306 isp1362_write_reg16(isp1362_hcd, HCINTLBUFSZ, 2307 isp1362_hcd->intl_queue.buf_size); 2308 isp1362_write_reg16(isp1362_hcd, HCINTLBLKSZ, 2309 isp1362_hcd->intl_queue.blk_size - PTD_HEADER_SIZE); 2310 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); 2311 isp1362_write_reg32(isp1362_hcd, HCINTLLAST, 2312 1 << (ISP1362_INTL_BUFFERS - 1)); 2313 2314 isp1362_hcd->atl_queue.buf_start = istl_size + intl_size; 2315 isp1362_hcd->atl_queue.buf_size = atl_size; 2316 isp1362_hcd->atl_queue.buf_count = atl_buffers; 2317 isp1362_hcd->atl_queue.blk_size = atl_blksize; 2318 isp1362_hcd->atl_queue.buf_avail = isp1362_hcd->atl_queue.buf_count; 2319 isp1362_hcd->atl_queue.skip_map = ~0; 2320 INIT_LIST_HEAD(&isp1362_hcd->atl_queue.active); 2321 2322 isp1362_write_reg16(isp1362_hcd, HCATLBUFSZ, 2323 isp1362_hcd->atl_queue.buf_size); 2324 isp1362_write_reg16(isp1362_hcd, HCATLBLKSZ, 2325 isp1362_hcd->atl_queue.blk_size - PTD_HEADER_SIZE); 2326 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); 2327 isp1362_write_reg32(isp1362_hcd, HCATLLAST, 2328 1 << (atl_buffers - 1)); 2329 2330 snprintf(isp1362_hcd->atl_queue.name, 2331 sizeof(isp1362_hcd->atl_queue.name), "ATL"); 2332 snprintf(isp1362_hcd->intl_queue.name, 2333 sizeof(isp1362_hcd->intl_queue.name), "INTL"); 2334 DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, 2335 isp1362_hcd->intl_queue.name, 2336 isp1362_hcd->intl_queue.buf_start, 2337 ISP1362_INTL_BUFFERS, isp1362_hcd->intl_queue.blk_size, 2338 isp1362_hcd->intl_queue.buf_size); 2339 DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, 2340 isp1362_hcd->atl_queue.name, 2341 isp1362_hcd->atl_queue.buf_start, 2342 atl_buffers, isp1362_hcd->atl_queue.blk_size, 2343 isp1362_hcd->atl_queue.buf_size); 2344 2345 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2346 2347 return 0; 2348} 2349 2350static int isp1362_hc_reset(struct usb_hcd *hcd) 2351{ 2352 int ret = 0; 2353 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2354 unsigned long t; 2355 unsigned long timeout = 100; 2356 unsigned long flags; 2357 int clkrdy = 0; 2358 2359 pr_info("%s:\n", __func__); 2360 2361 if (isp1362_hcd->board && isp1362_hcd->board->reset) { 2362 isp1362_hcd->board->reset(hcd->self.controller, 1); 2363 msleep(20); 2364 if (isp1362_hcd->board->clock) 2365 isp1362_hcd->board->clock(hcd->self.controller, 1); 2366 isp1362_hcd->board->reset(hcd->self.controller, 0); 2367 } else 2368 isp1362_sw_reset(isp1362_hcd); 2369 2370 /* chip has been reset. First we need to see a clock */ 2371 t = jiffies + msecs_to_jiffies(timeout); 2372 while (!clkrdy && time_before_eq(jiffies, t)) { 2373 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2374 clkrdy = isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_CLKRDY; 2375 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2376 if (!clkrdy) 2377 msleep(4); 2378 } 2379 2380 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2381 isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_CLKRDY); 2382 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2383 if (!clkrdy) { 2384 pr_err("Clock not ready after %lums\n", timeout); 2385 ret = -ENODEV; 2386 } 2387 return ret; 2388} 2389 2390static void isp1362_hc_stop(struct usb_hcd *hcd) 2391{ 2392 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2393 unsigned long flags; 2394 u32 tmp; 2395 2396 pr_info("%s:\n", __func__); 2397 2398 del_timer_sync(&hcd->rh_timer); 2399 2400 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2401 2402 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 2403 2404 /* Switch off power for all ports */ 2405 tmp = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); 2406 tmp &= ~(RH_A_NPS | RH_A_PSM); 2407 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, tmp); 2408 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); 2409 2410 /* Reset the chip */ 2411 if (isp1362_hcd->board && isp1362_hcd->board->reset) 2412 isp1362_hcd->board->reset(hcd->self.controller, 1); 2413 else 2414 __isp1362_sw_reset(isp1362_hcd); 2415 2416 if (isp1362_hcd->board && isp1362_hcd->board->clock) 2417 isp1362_hcd->board->clock(hcd->self.controller, 0); 2418 2419 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2420} 2421 2422#ifdef CHIP_BUFFER_TEST 2423static int isp1362_chip_test(struct isp1362_hcd *isp1362_hcd) 2424{ 2425 int ret = 0; 2426 u16 *ref; 2427 unsigned long flags; 2428 2429 ref = kmalloc(2 * ISP1362_BUF_SIZE, GFP_KERNEL); 2430 if (ref) { 2431 int offset; 2432 u16 *tst = &ref[ISP1362_BUF_SIZE / 2]; 2433 2434 for (offset = 0; offset < ISP1362_BUF_SIZE / 2; offset++) { 2435 ref[offset] = ~offset; 2436 tst[offset] = offset; 2437 } 2438 2439 for (offset = 0; offset < 4; offset++) { 2440 int j; 2441 2442 for (j = 0; j < 8; j++) { 2443 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2444 isp1362_write_buffer(isp1362_hcd, (u8 *)ref + offset, 0, j); 2445 isp1362_read_buffer(isp1362_hcd, (u8 *)tst + offset, 0, j); 2446 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2447 2448 if (memcmp(ref, tst, j)) { 2449 ret = -ENODEV; 2450 pr_err("%s: memory check with %d byte offset %d failed\n", 2451 __func__, j, offset); 2452 dump_data((u8 *)ref + offset, j); 2453 dump_data((u8 *)tst + offset, j); 2454 } 2455 } 2456 } 2457 2458 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2459 isp1362_write_buffer(isp1362_hcd, ref, 0, ISP1362_BUF_SIZE); 2460 isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2461 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2462 2463 if (memcmp(ref, tst, ISP1362_BUF_SIZE)) { 2464 ret = -ENODEV; 2465 pr_err("%s: memory check failed\n", __func__); 2466 dump_data((u8 *)tst, ISP1362_BUF_SIZE / 2); 2467 } 2468 2469 for (offset = 0; offset < 256; offset++) { 2470 int test_size = 0; 2471 2472 yield(); 2473 2474 memset(tst, 0, ISP1362_BUF_SIZE); 2475 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2476 isp1362_write_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2477 isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2478 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2479 if (memcmp(tst, tst + (ISP1362_BUF_SIZE / (2 * sizeof(*tst))), 2480 ISP1362_BUF_SIZE / 2)) { 2481 pr_err("%s: Failed to clear buffer\n", __func__); 2482 dump_data((u8 *)tst, ISP1362_BUF_SIZE); 2483 break; 2484 } 2485 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2486 isp1362_write_buffer(isp1362_hcd, ref, offset * 2, PTD_HEADER_SIZE); 2487 isp1362_write_buffer(isp1362_hcd, ref + PTD_HEADER_SIZE / sizeof(*ref), 2488 offset * 2 + PTD_HEADER_SIZE, test_size); 2489 isp1362_read_buffer(isp1362_hcd, tst, offset * 2, 2490 PTD_HEADER_SIZE + test_size); 2491 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2492 if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { 2493 dump_data(((u8 *)ref) + offset, PTD_HEADER_SIZE + test_size); 2494 dump_data((u8 *)tst, PTD_HEADER_SIZE + test_size); 2495 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2496 isp1362_read_buffer(isp1362_hcd, tst, offset * 2, 2497 PTD_HEADER_SIZE + test_size); 2498 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2499 if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { 2500 ret = -ENODEV; 2501 pr_err("%s: memory check with offset %02x failed\n", 2502 __func__, offset); 2503 break; 2504 } 2505 pr_warning("%s: memory check with offset %02x ok after second read\n", 2506 __func__, offset); 2507 } 2508 } 2509 kfree(ref); 2510 } 2511 return ret; 2512} 2513#endif 2514 2515static int isp1362_hc_start(struct usb_hcd *hcd) 2516{ 2517 int ret; 2518 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2519 struct isp1362_platform_data *board = isp1362_hcd->board; 2520 u16 hwcfg; 2521 u16 chipid; 2522 unsigned long flags; 2523 2524 pr_info("%s:\n", __func__); 2525 2526 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2527 chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID); 2528 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2529 2530 if ((chipid & HCCHIPID_MASK) != HCCHIPID_MAGIC) { 2531 pr_err("%s: Invalid chip ID %04x\n", __func__, chipid); 2532 return -ENODEV; 2533 } 2534 2535#ifdef CHIP_BUFFER_TEST 2536 ret = isp1362_chip_test(isp1362_hcd); 2537 if (ret) 2538 return -ENODEV; 2539#endif 2540 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2541 /* clear interrupt status and disable all interrupt sources */ 2542 isp1362_write_reg16(isp1362_hcd, HCuPINT, 0xff); 2543 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 2544 2545 /* HW conf */ 2546 hwcfg = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); 2547 if (board->sel15Kres) 2548 hwcfg |= HCHWCFG_PULLDOWN_DS2 | 2549 ((MAX_ROOT_PORTS > 1) ? HCHWCFG_PULLDOWN_DS1 : 0); 2550 if (board->clknotstop) 2551 hwcfg |= HCHWCFG_CLKNOTSTOP; 2552 if (board->oc_enable) 2553 hwcfg |= HCHWCFG_ANALOG_OC; 2554 if (board->int_act_high) 2555 hwcfg |= HCHWCFG_INT_POL; 2556 if (board->int_edge_triggered) 2557 hwcfg |= HCHWCFG_INT_TRIGGER; 2558 if (board->dreq_act_high) 2559 hwcfg |= HCHWCFG_DREQ_POL; 2560 if (board->dack_act_high) 2561 hwcfg |= HCHWCFG_DACK_POL; 2562 isp1362_write_reg16(isp1362_hcd, HCHWCFG, hwcfg); 2563 isp1362_show_reg(isp1362_hcd, HCHWCFG); 2564 isp1362_write_reg16(isp1362_hcd, HCDMACFG, 0); 2565 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2566 2567 ret = isp1362_mem_config(hcd); 2568 if (ret) 2569 return ret; 2570 2571 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2572 2573 /* Root hub conf */ 2574 isp1362_hcd->rhdesca = 0; 2575 if (board->no_power_switching) 2576 isp1362_hcd->rhdesca |= RH_A_NPS; 2577 if (board->power_switching_mode) 2578 isp1362_hcd->rhdesca |= RH_A_PSM; 2579 if (board->potpg) 2580 isp1362_hcd->rhdesca |= (board->potpg << 24) & RH_A_POTPGT; 2581 else 2582 isp1362_hcd->rhdesca |= (25 << 24) & RH_A_POTPGT; 2583 2584 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca & ~RH_A_OCPM); 2585 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca | RH_A_OCPM); 2586 isp1362_hcd->rhdesca = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); 2587 2588 isp1362_hcd->rhdescb = RH_B_PPCM; 2589 isp1362_write_reg32(isp1362_hcd, HCRHDESCB, isp1362_hcd->rhdescb); 2590 isp1362_hcd->rhdescb = isp1362_read_reg32(isp1362_hcd, HCRHDESCB); 2591 2592 isp1362_read_reg32(isp1362_hcd, HCFMINTVL); 2593 isp1362_write_reg32(isp1362_hcd, HCFMINTVL, (FSMP(FI) << 16) | FI); 2594 isp1362_write_reg32(isp1362_hcd, HCLSTHRESH, LSTHRESH); 2595 2596 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2597 2598 isp1362_hcd->hc_control = OHCI_USB_OPER; 2599 hcd->state = HC_STATE_RUNNING; 2600 2601 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2602 /* Set up interrupts */ 2603 isp1362_hcd->intenb = OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE; 2604 isp1362_hcd->intenb |= OHCI_INTR_RD; 2605 isp1362_hcd->irqenb = HCuPINT_OPR | HCuPINT_SUSP; 2606 isp1362_write_reg32(isp1362_hcd, HCINTENB, isp1362_hcd->intenb); 2607 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 2608 2609 /* Go operational */ 2610 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 2611 /* enable global power */ 2612 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC | RH_HS_DRWE); 2613 2614 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2615 2616 return 0; 2617} 2618 2619/*-------------------------------------------------------------------------*/ 2620 2621static struct hc_driver isp1362_hc_driver = { 2622 .description = hcd_name, 2623 .product_desc = "ISP1362 Host Controller", 2624 .hcd_priv_size = sizeof(struct isp1362_hcd), 2625 2626 .irq = isp1362_irq, 2627 .flags = HCD_USB11 | HCD_MEMORY, 2628 2629 .reset = isp1362_hc_reset, 2630 .start = isp1362_hc_start, 2631 .stop = isp1362_hc_stop, 2632 2633 .urb_enqueue = isp1362_urb_enqueue, 2634 .urb_dequeue = isp1362_urb_dequeue, 2635 .endpoint_disable = isp1362_endpoint_disable, 2636 2637 .get_frame_number = isp1362_get_frame, 2638 2639 .hub_status_data = isp1362_hub_status_data, 2640 .hub_control = isp1362_hub_control, 2641 .bus_suspend = isp1362_bus_suspend, 2642 .bus_resume = isp1362_bus_resume, 2643}; 2644 2645/*-------------------------------------------------------------------------*/ 2646 2647#define resource_len(r) (((r)->end - (r)->start) + 1) 2648 2649static int __devexit isp1362_remove(struct platform_device *pdev) 2650{ 2651 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2652 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2653 struct resource *res; 2654 2655 remove_debug_file(isp1362_hcd); 2656 DBG(0, "%s: Removing HCD\n", __func__); 2657 usb_remove_hcd(hcd); 2658 2659 DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, 2660 isp1362_hcd->data_reg); 2661 iounmap(isp1362_hcd->data_reg); 2662 2663 DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, 2664 isp1362_hcd->addr_reg); 2665 iounmap(isp1362_hcd->addr_reg); 2666 2667 res = platform_get_resource(pdev, IORESOURCE_MEM, 1); 2668 DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start); 2669 if (res) 2670 release_mem_region(res->start, resource_len(res)); 2671 2672 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2673 DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start); 2674 if (res) 2675 release_mem_region(res->start, resource_len(res)); 2676 2677 DBG(0, "%s: put_hcd\n", __func__); 2678 usb_put_hcd(hcd); 2679 DBG(0, "%s: Done\n", __func__); 2680 2681 return 0; 2682} 2683 2684static int __init isp1362_probe(struct platform_device *pdev) 2685{ 2686 struct usb_hcd *hcd; 2687 struct isp1362_hcd *isp1362_hcd; 2688 struct resource *addr, *data; 2689 void __iomem *addr_reg; 2690 void __iomem *data_reg; 2691 int irq; 2692 int retval = 0; 2693 struct resource *irq_res; 2694 unsigned int irq_flags = 0; 2695 2696 /* basic sanity checks first. board-specific init logic should 2697 * have initialized this the three resources and probably board 2698 * specific platform_data. we don't probe for IRQs, and do only 2699 * minimal sanity checking. 2700 */ 2701 if (pdev->num_resources < 3) { 2702 retval = -ENODEV; 2703 goto err1; 2704 } 2705 2706 data = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2707 addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); 2708 irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2709 if (!addr || !data || !irq_res) { 2710 retval = -ENODEV; 2711 goto err1; 2712 } 2713 irq = irq_res->start; 2714 2715 if (pdev->dev.dma_mask) { 2716 DBG(1, "won't do DMA"); 2717 retval = -ENODEV; 2718 goto err1; 2719 } 2720 2721 if (!request_mem_region(addr->start, resource_len(addr), hcd_name)) { 2722 retval = -EBUSY; 2723 goto err1; 2724 } 2725 addr_reg = ioremap(addr->start, resource_len(addr)); 2726 if (addr_reg == NULL) { 2727 retval = -ENOMEM; 2728 goto err2; 2729 } 2730 2731 if (!request_mem_region(data->start, resource_len(data), hcd_name)) { 2732 retval = -EBUSY; 2733 goto err3; 2734 } 2735 data_reg = ioremap(data->start, resource_len(data)); 2736 if (data_reg == NULL) { 2737 retval = -ENOMEM; 2738 goto err4; 2739 } 2740 2741 /* allocate and initialize hcd */ 2742 hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev)); 2743 if (!hcd) { 2744 retval = -ENOMEM; 2745 goto err5; 2746 } 2747 hcd->rsrc_start = data->start; 2748 isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2749 isp1362_hcd->data_reg = data_reg; 2750 isp1362_hcd->addr_reg = addr_reg; 2751 2752 isp1362_hcd->next_statechange = jiffies; 2753 spin_lock_init(&isp1362_hcd->lock); 2754 INIT_LIST_HEAD(&isp1362_hcd->async); 2755 INIT_LIST_HEAD(&isp1362_hcd->periodic); 2756 INIT_LIST_HEAD(&isp1362_hcd->isoc); 2757 INIT_LIST_HEAD(&isp1362_hcd->remove_list); 2758 isp1362_hcd->board = pdev->dev.platform_data; 2759#if USE_PLATFORM_DELAY 2760 if (!isp1362_hcd->board->delay) { 2761 dev_err(hcd->self.controller, "No platform delay function given\n"); 2762 retval = -ENODEV; 2763 goto err6; 2764 } 2765#endif 2766 2767 if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE) 2768 irq_flags |= IRQF_TRIGGER_RISING; 2769 if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE) 2770 irq_flags |= IRQF_TRIGGER_FALLING; 2771 if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL) 2772 irq_flags |= IRQF_TRIGGER_HIGH; 2773 if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL) 2774 irq_flags |= IRQF_TRIGGER_LOW; 2775 2776 retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_DISABLED | IRQF_SHARED); 2777 if (retval != 0) 2778 goto err6; 2779 pr_info("%s, irq %d\n", hcd->product_desc, irq); 2780 2781 create_debug_file(isp1362_hcd); 2782 2783 return 0; 2784 2785 err6: 2786 DBG(0, "%s: Freeing dev %p\n", __func__, isp1362_hcd); 2787 usb_put_hcd(hcd); 2788 err5: 2789 DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, data_reg); 2790 iounmap(data_reg); 2791 err4: 2792 DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)data->start); 2793 release_mem_region(data->start, resource_len(data)); 2794 err3: 2795 DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, addr_reg); 2796 iounmap(addr_reg); 2797 err2: 2798 DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)addr->start); 2799 release_mem_region(addr->start, resource_len(addr)); 2800 err1: 2801 pr_err("%s: init error, %d\n", __func__, retval); 2802 2803 return retval; 2804} 2805 2806#ifdef CONFIG_PM 2807static int isp1362_suspend(struct platform_device *pdev, pm_message_t state) 2808{ 2809 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2810 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2811 unsigned long flags; 2812 int retval = 0; 2813 2814 DBG(0, "%s: Suspending device\n", __func__); 2815 2816 if (state.event == PM_EVENT_FREEZE) { 2817 DBG(0, "%s: Suspending root hub\n", __func__); 2818 retval = isp1362_bus_suspend(hcd); 2819 } else { 2820 DBG(0, "%s: Suspending RH ports\n", __func__); 2821 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2822 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); 2823 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2824 } 2825 if (retval == 0) 2826 pdev->dev.power.power_state = state; 2827 return retval; 2828} 2829 2830static int isp1362_resume(struct platform_device *pdev) 2831{ 2832 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2833 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2834 unsigned long flags; 2835 2836 DBG(0, "%s: Resuming\n", __func__); 2837 2838 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) { 2839 DBG(0, "%s: Resume RH ports\n", __func__); 2840 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2841 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC); 2842 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2843 return 0; 2844 } 2845 2846 pdev->dev.power.power_state = PMSG_ON; 2847 2848 return isp1362_bus_resume(isp1362_hcd_to_hcd(isp1362_hcd)); 2849} 2850#else 2851#define isp1362_suspend NULL 2852#define isp1362_resume NULL 2853#endif 2854 2855static struct platform_driver isp1362_driver = { 2856 .probe = isp1362_probe, 2857 .remove = __devexit_p(isp1362_remove), 2858 2859 .suspend = isp1362_suspend, 2860 .resume = isp1362_resume, 2861 .driver = { 2862 .name = (char *)hcd_name, 2863 .owner = THIS_MODULE, 2864 }, 2865}; 2866 2867/*-------------------------------------------------------------------------*/ 2868 2869static int __init isp1362_init(void) 2870{ 2871 if (usb_disabled()) 2872 return -ENODEV; 2873 pr_info("driver %s, %s\n", hcd_name, DRIVER_VERSION); 2874 return platform_driver_register(&isp1362_driver); 2875} 2876module_init(isp1362_init); 2877 2878static void __exit isp1362_cleanup(void) 2879{ 2880 platform_driver_unregister(&isp1362_driver); 2881} 2882module_exit(isp1362_cleanup); 2883