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/errno.h> 74 #include <linux/init.h> 75 #include <linux/list.h> 76 #include <linux/interrupt.h> 77 #include <linux/usb.h> 78 #include <linux/usb/isp1362.h> 79 #include <linux/usb/hcd.h> 80 #include <linux/platform_device.h> 81 #include <linux/pm.h> 82 #include <linux/io.h> 83 #include <linux/bitmap.h> 84 #include <linux/prefetch.h> 85 86 #include <asm/irq.h> 87 #include <asm/byteorder.h> 88 #include <asm/unaligned.h> 89 90 static int dbg_level; 91 #ifdef ISP1362_DEBUG 92 module_param(dbg_level, int, 0644); 93 #else 94 module_param(dbg_level, int, 0); 95 #define STUB_DEBUG_FILE 96 #endif 97 98 #include "../core/usb.h" 99 #include "isp1362.h" 100 101 102 #define DRIVER_VERSION "2005-04-04" 103 #define DRIVER_DESC "ISP1362 USB Host Controller Driver" 104 105 MODULE_DESCRIPTION(DRIVER_DESC); 106 MODULE_LICENSE("GPL"); 107 108 static const char hcd_name[] = "isp1362-hcd"; 109 110 static void isp1362_hc_stop(struct usb_hcd *hcd); 111 static int isp1362_hc_start(struct usb_hcd *hcd); 112 113 /*-------------------------------------------------------------------------*/ 114 115 /* 116 * When called from the interrupthandler only isp1362_hcd->irqenb is modified, 117 * since the interrupt handler will write isp1362_hcd->irqenb to HCuPINT upon 118 * completion. 119 * We don't need a 'disable' counterpart, since interrupts will be disabled 120 * only by the interrupt handler. 121 */ 122 static inline void isp1362_enable_int(struct isp1362_hcd *isp1362_hcd, u16 mask) 123 { 124 if ((isp1362_hcd->irqenb | mask) == isp1362_hcd->irqenb) 125 return; 126 if (mask & ~isp1362_hcd->irqenb) 127 isp1362_write_reg16(isp1362_hcd, HCuPINT, mask & ~isp1362_hcd->irqenb); 128 isp1362_hcd->irqenb |= mask; 129 if (isp1362_hcd->irq_active) 130 return; 131 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 132 } 133 134 /*-------------------------------------------------------------------------*/ 135 136 static inline struct isp1362_ep_queue *get_ptd_queue(struct isp1362_hcd *isp1362_hcd, 137 u16 offset) 138 { 139 struct isp1362_ep_queue *epq = NULL; 140 141 if (offset < isp1362_hcd->istl_queue[1].buf_start) 142 epq = &isp1362_hcd->istl_queue[0]; 143 else if (offset < isp1362_hcd->intl_queue.buf_start) 144 epq = &isp1362_hcd->istl_queue[1]; 145 else if (offset < isp1362_hcd->atl_queue.buf_start) 146 epq = &isp1362_hcd->intl_queue; 147 else if (offset < isp1362_hcd->atl_queue.buf_start + 148 isp1362_hcd->atl_queue.buf_size) 149 epq = &isp1362_hcd->atl_queue; 150 151 if (epq) 152 DBG(1, "%s: PTD $%04x is on %s queue\n", __func__, offset, epq->name); 153 else 154 pr_warning("%s: invalid PTD $%04x\n", __func__, offset); 155 156 return epq; 157 } 158 159 static inline int get_ptd_offset(struct isp1362_ep_queue *epq, u8 index) 160 { 161 int offset; 162 163 if (index * epq->blk_size > epq->buf_size) { 164 pr_warning("%s: Bad %s index %d(%d)\n", __func__, epq->name, index, 165 epq->buf_size / epq->blk_size); 166 return -EINVAL; 167 } 168 offset = epq->buf_start + index * epq->blk_size; 169 DBG(3, "%s: %s PTD[%02x] # %04x\n", __func__, epq->name, index, offset); 170 171 return offset; 172 } 173 174 /*-------------------------------------------------------------------------*/ 175 176 static inline u16 max_transfer_size(struct isp1362_ep_queue *epq, size_t size, 177 int mps) 178 { 179 u16 xfer_size = min_t(size_t, MAX_XFER_SIZE, size); 180 181 xfer_size = min_t(size_t, xfer_size, epq->buf_avail * epq->blk_size - PTD_HEADER_SIZE); 182 if (xfer_size < size && xfer_size % mps) 183 xfer_size -= xfer_size % mps; 184 185 return xfer_size; 186 } 187 188 static int claim_ptd_buffers(struct isp1362_ep_queue *epq, 189 struct isp1362_ep *ep, u16 len) 190 { 191 int ptd_offset = -EINVAL; 192 int num_ptds = ((len + PTD_HEADER_SIZE - 1) / epq->blk_size) + 1; 193 int found; 194 195 BUG_ON(len > epq->buf_size); 196 197 if (!epq->buf_avail) 198 return -ENOMEM; 199 200 if (ep->num_ptds) 201 pr_err("%s: %s len %d/%d num_ptds %d buf_map %08lx skip_map %08lx\n", __func__, 202 epq->name, len, epq->blk_size, num_ptds, epq->buf_map, epq->skip_map); 203 BUG_ON(ep->num_ptds != 0); 204 205 found = bitmap_find_next_zero_area(&epq->buf_map, epq->buf_count, 0, 206 num_ptds, 0); 207 if (found >= epq->buf_count) 208 return -EOVERFLOW; 209 210 DBG(1, "%s: Found %d PTDs[%d] for %d/%d byte\n", __func__, 211 num_ptds, found, len, (int)(epq->blk_size - PTD_HEADER_SIZE)); 212 ptd_offset = get_ptd_offset(epq, found); 213 WARN_ON(ptd_offset < 0); 214 ep->ptd_offset = ptd_offset; 215 ep->num_ptds += num_ptds; 216 epq->buf_avail -= num_ptds; 217 BUG_ON(epq->buf_avail > epq->buf_count); 218 ep->ptd_index = found; 219 bitmap_set(&epq->buf_map, found, num_ptds); 220 DBG(1, "%s: Done %s PTD[%d] $%04x, avail %d count %d claimed %d %08lx:%08lx\n", 221 __func__, epq->name, ep->ptd_index, ep->ptd_offset, 222 epq->buf_avail, epq->buf_count, num_ptds, epq->buf_map, epq->skip_map); 223 224 return found; 225 } 226 227 static inline void release_ptd_buffers(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) 228 { 229 int last = ep->ptd_index + ep->num_ptds; 230 231 if (last > epq->buf_count) 232 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", 233 __func__, ep, ep->num_req, ep->length, epq->name, ep->ptd_index, 234 ep->ptd_offset, ep->num_ptds, epq->buf_count, epq->buf_avail, 235 epq->buf_map, epq->skip_map); 236 BUG_ON(last > epq->buf_count); 237 238 bitmap_clear(&epq->buf_map, ep->ptd_index, ep->num_ptds); 239 bitmap_set(&epq->skip_map, ep->ptd_index, ep->num_ptds); 240 epq->buf_avail += ep->num_ptds; 241 epq->ptd_count--; 242 243 BUG_ON(epq->buf_avail > epq->buf_count); 244 BUG_ON(epq->ptd_count > epq->buf_count); 245 246 DBG(1, "%s: Done %s PTDs $%04x released %d avail %d count %d\n", 247 __func__, epq->name, 248 ep->ptd_offset, ep->num_ptds, epq->buf_avail, epq->buf_count); 249 DBG(1, "%s: buf_map %08lx skip_map %08lx\n", __func__, 250 epq->buf_map, epq->skip_map); 251 252 ep->num_ptds = 0; 253 ep->ptd_offset = -EINVAL; 254 ep->ptd_index = -EINVAL; 255 } 256 257 /*-------------------------------------------------------------------------*/ 258 259 /* 260 Set up PTD's. 261 */ 262 static void prepare_ptd(struct isp1362_hcd *isp1362_hcd, struct urb *urb, 263 struct isp1362_ep *ep, struct isp1362_ep_queue *epq, 264 u16 fno) 265 { 266 struct ptd *ptd; 267 int toggle; 268 int dir; 269 u16 len; 270 size_t buf_len = urb->transfer_buffer_length - urb->actual_length; 271 272 DBG(3, "%s: %s ep %p\n", __func__, epq->name, ep); 273 274 ptd = &ep->ptd; 275 276 ep->data = (unsigned char *)urb->transfer_buffer + urb->actual_length; 277 278 switch (ep->nextpid) { 279 case USB_PID_IN: 280 toggle = usb_gettoggle(urb->dev, ep->epnum, 0); 281 dir = PTD_DIR_IN; 282 if (usb_pipecontrol(urb->pipe)) { 283 len = min_t(size_t, ep->maxpacket, buf_len); 284 } else if (usb_pipeisoc(urb->pipe)) { 285 len = min_t(size_t, urb->iso_frame_desc[fno].length, MAX_XFER_SIZE); 286 ep->data = urb->transfer_buffer + urb->iso_frame_desc[fno].offset; 287 } else 288 len = max_transfer_size(epq, buf_len, ep->maxpacket); 289 DBG(1, "%s: IN len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, 290 (int)buf_len); 291 break; 292 case USB_PID_OUT: 293 toggle = usb_gettoggle(urb->dev, ep->epnum, 1); 294 dir = PTD_DIR_OUT; 295 if (usb_pipecontrol(urb->pipe)) 296 len = min_t(size_t, ep->maxpacket, buf_len); 297 else if (usb_pipeisoc(urb->pipe)) 298 len = min_t(size_t, urb->iso_frame_desc[0].length, MAX_XFER_SIZE); 299 else 300 len = max_transfer_size(epq, buf_len, ep->maxpacket); 301 if (len == 0) 302 pr_info("%s: Sending ZERO packet: %d\n", __func__, 303 urb->transfer_flags & URB_ZERO_PACKET); 304 DBG(1, "%s: OUT len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, 305 (int)buf_len); 306 break; 307 case USB_PID_SETUP: 308 toggle = 0; 309 dir = PTD_DIR_SETUP; 310 len = sizeof(struct usb_ctrlrequest); 311 DBG(1, "%s: SETUP len %d\n", __func__, len); 312 ep->data = urb->setup_packet; 313 break; 314 case USB_PID_ACK: 315 toggle = 1; 316 len = 0; 317 dir = (urb->transfer_buffer_length && usb_pipein(urb->pipe)) ? 318 PTD_DIR_OUT : PTD_DIR_IN; 319 DBG(1, "%s: ACK len %d\n", __func__, len); 320 break; 321 default: 322 toggle = dir = len = 0; 323 pr_err("%s@%d: ep->nextpid %02x\n", __func__, __LINE__, ep->nextpid); 324 BUG_ON(1); 325 } 326 327 ep->length = len; 328 if (!len) 329 ep->data = NULL; 330 331 ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); 332 ptd->mps = PTD_MPS(ep->maxpacket) | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | 333 PTD_EP(ep->epnum); 334 ptd->len = PTD_LEN(len) | PTD_DIR(dir); 335 ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); 336 337 if (usb_pipeint(urb->pipe)) { 338 ptd->faddr |= PTD_SF_INT(ep->branch); 339 ptd->faddr |= PTD_PR(ep->interval ? __ffs(ep->interval) : 0); 340 } 341 if (usb_pipeisoc(urb->pipe)) 342 ptd->faddr |= PTD_SF_ISO(fno); 343 344 DBG(1, "%s: Finished\n", __func__); 345 } 346 347 static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 348 struct isp1362_ep_queue *epq) 349 { 350 struct ptd *ptd = &ep->ptd; 351 int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length; 352 353 _BUG_ON(ep->ptd_offset < 0); 354 355 prefetch(ptd); 356 isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); 357 if (len) 358 isp1362_write_buffer(isp1362_hcd, ep->data, 359 ep->ptd_offset + PTD_HEADER_SIZE, len); 360 361 dump_ptd(ptd); 362 dump_ptd_out_data(ptd, ep->data); 363 } 364 365 static void isp1362_read_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 366 struct isp1362_ep_queue *epq) 367 { 368 struct ptd *ptd = &ep->ptd; 369 int act_len; 370 371 WARN_ON(list_empty(&ep->active)); 372 BUG_ON(ep->ptd_offset < 0); 373 374 list_del_init(&ep->active); 375 DBG(1, "%s: ep %p removed from active list %p\n", __func__, ep, &epq->active); 376 377 prefetchw(ptd); 378 isp1362_read_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); 379 dump_ptd(ptd); 380 act_len = PTD_GET_COUNT(ptd); 381 if (PTD_GET_DIR(ptd) != PTD_DIR_IN || act_len == 0) 382 return; 383 if (act_len > ep->length) 384 pr_err("%s: ep %p PTD $%04x act_len %d ep->length %d\n", __func__, ep, 385 ep->ptd_offset, act_len, ep->length); 386 BUG_ON(act_len > ep->length); 387 /* Only transfer the amount of data that has actually been overwritten 388 * in the chip buffer. We don't want any data that doesn't belong to the 389 * transfer to leak out of the chip to the callers transfer buffer! 390 */ 391 prefetchw(ep->data); 392 isp1362_read_buffer(isp1362_hcd, ep->data, 393 ep->ptd_offset + PTD_HEADER_SIZE, act_len); 394 dump_ptd_in_data(ptd, ep->data); 395 } 396 397 /* 398 * INT PTDs will stay in the chip until data is available. 399 * This function will remove a PTD from the chip when the URB is dequeued. 400 * Must be called with the spinlock held and IRQs disabled 401 */ 402 static void remove_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) 403 404 { 405 int index; 406 struct isp1362_ep_queue *epq; 407 408 DBG(1, "%s: ep %p PTD[%d] $%04x\n", __func__, ep, ep->ptd_index, ep->ptd_offset); 409 BUG_ON(ep->ptd_offset < 0); 410 411 epq = get_ptd_queue(isp1362_hcd, ep->ptd_offset); 412 BUG_ON(!epq); 413 414 /* put ep in remove_list for cleanup */ 415 WARN_ON(!list_empty(&ep->remove_list)); 416 list_add_tail(&ep->remove_list, &isp1362_hcd->remove_list); 417 /* let SOF interrupt handle the cleanup */ 418 isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); 419 420 index = ep->ptd_index; 421 if (index < 0) 422 /* ISO queues don't have SKIP registers */ 423 return; 424 425 DBG(1, "%s: Disabling PTD[%02x] $%04x %08lx|%08x\n", __func__, 426 index, ep->ptd_offset, epq->skip_map, 1 << index); 427 428 /* prevent further processing of PTD (will be effective after next SOF) */ 429 epq->skip_map |= 1 << index; 430 if (epq == &isp1362_hcd->atl_queue) { 431 DBG(2, "%s: ATLSKIP = %08x -> %08lx\n", __func__, 432 isp1362_read_reg32(isp1362_hcd, HCATLSKIP), epq->skip_map); 433 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, epq->skip_map); 434 if (~epq->skip_map == 0) 435 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 436 } else if (epq == &isp1362_hcd->intl_queue) { 437 DBG(2, "%s: INTLSKIP = %08x -> %08lx\n", __func__, 438 isp1362_read_reg32(isp1362_hcd, HCINTLSKIP), epq->skip_map); 439 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, epq->skip_map); 440 if (~epq->skip_map == 0) 441 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 442 } 443 } 444 445 /* 446 Take done or failed requests out of schedule. Give back 447 processed urbs. 448 */ 449 static void finish_request(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 450 struct urb *urb, int status) 451 __releases(isp1362_hcd->lock) 452 __acquires(isp1362_hcd->lock) 453 { 454 urb->hcpriv = NULL; 455 ep->error_count = 0; 456 457 if (usb_pipecontrol(urb->pipe)) 458 ep->nextpid = USB_PID_SETUP; 459 460 URB_DBG("%s: req %d FA %d ep%d%s %s: len %d/%d %s stat %d\n", __func__, 461 ep->num_req, usb_pipedevice(urb->pipe), 462 usb_pipeendpoint(urb->pipe), 463 !usb_pipein(urb->pipe) ? "out" : "in", 464 usb_pipecontrol(urb->pipe) ? "ctrl" : 465 usb_pipeint(urb->pipe) ? "int" : 466 usb_pipebulk(urb->pipe) ? "bulk" : 467 "iso", 468 urb->actual_length, urb->transfer_buffer_length, 469 !(urb->transfer_flags & URB_SHORT_NOT_OK) ? 470 "short_ok" : "", urb->status); 471 472 473 usb_hcd_unlink_urb_from_ep(isp1362_hcd_to_hcd(isp1362_hcd), urb); 474 spin_unlock(&isp1362_hcd->lock); 475 usb_hcd_giveback_urb(isp1362_hcd_to_hcd(isp1362_hcd), urb, status); 476 spin_lock(&isp1362_hcd->lock); 477 478 /* take idle endpoints out of the schedule right away */ 479 if (!list_empty(&ep->hep->urb_list)) 480 return; 481 482 /* async deschedule */ 483 if (!list_empty(&ep->schedule)) { 484 list_del_init(&ep->schedule); 485 return; 486 } 487 488 489 if (ep->interval) { 490 /* periodic deschedule */ 491 DBG(1, "deschedule qh%d/%p branch %d load %d bandwidth %d -> %d\n", ep->interval, 492 ep, ep->branch, ep->load, 493 isp1362_hcd->load[ep->branch], 494 isp1362_hcd->load[ep->branch] - ep->load); 495 isp1362_hcd->load[ep->branch] -= ep->load; 496 ep->branch = PERIODIC_SIZE; 497 } 498 } 499 500 /* 501 * Analyze transfer results, handle partial transfers and errors 502 */ 503 static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) 504 { 505 struct urb *urb = get_urb(ep); 506 struct usb_device *udev; 507 struct ptd *ptd; 508 int short_ok; 509 u16 len; 510 int urbstat = -EINPROGRESS; 511 u8 cc; 512 513 DBG(2, "%s: ep %p req %d\n", __func__, ep, ep->num_req); 514 515 udev = urb->dev; 516 ptd = &ep->ptd; 517 cc = PTD_GET_CC(ptd); 518 if (cc == PTD_NOTACCESSED) { 519 pr_err("%s: req %d PTD %p Untouched by ISP1362\n", __func__, 520 ep->num_req, ptd); 521 cc = PTD_DEVNOTRESP; 522 } 523 524 short_ok = !(urb->transfer_flags & URB_SHORT_NOT_OK); 525 len = urb->transfer_buffer_length - urb->actual_length; 526 527 /* Data underrun is special. For allowed underrun 528 we clear the error and continue as normal. For 529 forbidden underrun we finish the DATA stage 530 immediately while for control transfer, 531 we do a STATUS stage. 532 */ 533 if (cc == PTD_DATAUNDERRUN) { 534 if (short_ok) { 535 DBG(1, "%s: req %d Allowed data underrun short_%sok %d/%d/%d byte\n", 536 __func__, ep->num_req, short_ok ? "" : "not_", 537 PTD_GET_COUNT(ptd), ep->maxpacket, len); 538 cc = PTD_CC_NOERROR; 539 urbstat = 0; 540 } else { 541 DBG(1, "%s: req %d Data Underrun %s nextpid %02x short_%sok %d/%d/%d byte\n", 542 __func__, ep->num_req, 543 usb_pipein(urb->pipe) ? "IN" : "OUT", ep->nextpid, 544 short_ok ? "" : "not_", 545 PTD_GET_COUNT(ptd), ep->maxpacket, len); 546 if (usb_pipecontrol(urb->pipe)) { 547 ep->nextpid = USB_PID_ACK; 548 /* save the data underrun error code for later and 549 * proceed with the status stage 550 */ 551 urb->actual_length += PTD_GET_COUNT(ptd); 552 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 553 554 if (urb->status == -EINPROGRESS) 555 urb->status = cc_to_error[PTD_DATAUNDERRUN]; 556 } else { 557 usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT, 558 PTD_GET_TOGGLE(ptd)); 559 urbstat = cc_to_error[PTD_DATAUNDERRUN]; 560 } 561 goto out; 562 } 563 } 564 565 if (cc != PTD_CC_NOERROR) { 566 if (++ep->error_count >= 3 || cc == PTD_CC_STALL || cc == PTD_DATAOVERRUN) { 567 urbstat = cc_to_error[cc]; 568 DBG(1, "%s: req %d nextpid %02x, status %d, error %d, error_count %d\n", 569 __func__, ep->num_req, ep->nextpid, urbstat, cc, 570 ep->error_count); 571 } 572 goto out; 573 } 574 575 switch (ep->nextpid) { 576 case USB_PID_OUT: 577 if (PTD_GET_COUNT(ptd) != ep->length) 578 pr_err("%s: count=%d len=%d\n", __func__, 579 PTD_GET_COUNT(ptd), ep->length); 580 BUG_ON(PTD_GET_COUNT(ptd) != ep->length); 581 urb->actual_length += ep->length; 582 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 583 usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd)); 584 if (urb->actual_length == urb->transfer_buffer_length) { 585 DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, 586 ep->num_req, len, ep->maxpacket, urbstat); 587 if (usb_pipecontrol(urb->pipe)) { 588 DBG(3, "%s: req %d %s Wait for ACK\n", __func__, 589 ep->num_req, 590 usb_pipein(urb->pipe) ? "IN" : "OUT"); 591 ep->nextpid = USB_PID_ACK; 592 } else { 593 if (len % ep->maxpacket || 594 !(urb->transfer_flags & URB_ZERO_PACKET)) { 595 urbstat = 0; 596 DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", 597 __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", 598 urbstat, len, ep->maxpacket, urb->actual_length); 599 } 600 } 601 } 602 break; 603 case USB_PID_IN: 604 len = PTD_GET_COUNT(ptd); 605 BUG_ON(len > ep->length); 606 urb->actual_length += len; 607 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 608 usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd)); 609 /* if transfer completed or (allowed) data underrun */ 610 if ((urb->transfer_buffer_length == urb->actual_length) || 611 len % ep->maxpacket) { 612 DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, 613 ep->num_req, len, ep->maxpacket, urbstat); 614 if (usb_pipecontrol(urb->pipe)) { 615 DBG(3, "%s: req %d %s Wait for ACK\n", __func__, 616 ep->num_req, 617 usb_pipein(urb->pipe) ? "IN" : "OUT"); 618 ep->nextpid = USB_PID_ACK; 619 } else { 620 urbstat = 0; 621 DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", 622 __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", 623 urbstat, len, ep->maxpacket, urb->actual_length); 624 } 625 } 626 break; 627 case USB_PID_SETUP: 628 if (urb->transfer_buffer_length == urb->actual_length) { 629 ep->nextpid = USB_PID_ACK; 630 } else if (usb_pipeout(urb->pipe)) { 631 usb_settoggle(udev, 0, 1, 1); 632 ep->nextpid = USB_PID_OUT; 633 } else { 634 usb_settoggle(udev, 0, 0, 1); 635 ep->nextpid = USB_PID_IN; 636 } 637 break; 638 case USB_PID_ACK: 639 DBG(3, "%s: req %d got ACK %d -> 0\n", __func__, ep->num_req, 640 urbstat); 641 WARN_ON(urbstat != -EINPROGRESS); 642 urbstat = 0; 643 ep->nextpid = 0; 644 break; 645 default: 646 BUG_ON(1); 647 } 648 649 out: 650 if (urbstat != -EINPROGRESS) { 651 DBG(2, "%s: Finishing ep %p req %d urb %p status %d\n", __func__, 652 ep, ep->num_req, urb, urbstat); 653 finish_request(isp1362_hcd, ep, urb, urbstat); 654 } 655 } 656 657 static void finish_unlinks(struct isp1362_hcd *isp1362_hcd) 658 { 659 struct isp1362_ep *ep; 660 struct isp1362_ep *tmp; 661 662 list_for_each_entry_safe(ep, tmp, &isp1362_hcd->remove_list, remove_list) { 663 struct isp1362_ep_queue *epq = 664 get_ptd_queue(isp1362_hcd, ep->ptd_offset); 665 int index = ep->ptd_index; 666 667 BUG_ON(epq == NULL); 668 if (index >= 0) { 669 DBG(1, "%s: remove PTD[%d] $%04x\n", __func__, index, ep->ptd_offset); 670 BUG_ON(ep->num_ptds == 0); 671 release_ptd_buffers(epq, ep); 672 } 673 if (!list_empty(&ep->hep->urb_list)) { 674 struct urb *urb = get_urb(ep); 675 676 DBG(1, "%s: Finishing req %d ep %p from remove_list\n", __func__, 677 ep->num_req, ep); 678 finish_request(isp1362_hcd, ep, urb, -ESHUTDOWN); 679 } 680 WARN_ON(list_empty(&ep->active)); 681 if (!list_empty(&ep->active)) { 682 list_del_init(&ep->active); 683 DBG(1, "%s: ep %p removed from active list\n", __func__, ep); 684 } 685 list_del_init(&ep->remove_list); 686 DBG(1, "%s: ep %p removed from remove_list\n", __func__, ep); 687 } 688 DBG(1, "%s: Done\n", __func__); 689 } 690 691 static inline void enable_atl_transfers(struct isp1362_hcd *isp1362_hcd, int count) 692 { 693 if (count > 0) { 694 if (count < isp1362_hcd->atl_queue.ptd_count) 695 isp1362_write_reg16(isp1362_hcd, HCATLDTC, count); 696 isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); 697 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, isp1362_hcd->atl_queue.skip_map); 698 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 699 } else 700 isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); 701 } 702 703 static inline void enable_intl_transfers(struct isp1362_hcd *isp1362_hcd) 704 { 705 isp1362_enable_int(isp1362_hcd, HCuPINT_INTL); 706 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 707 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, isp1362_hcd->intl_queue.skip_map); 708 } 709 710 static inline void enable_istl_transfers(struct isp1362_hcd *isp1362_hcd, int flip) 711 { 712 isp1362_enable_int(isp1362_hcd, flip ? HCuPINT_ISTL1 : HCuPINT_ISTL0); 713 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, flip ? 714 HCBUFSTAT_ISTL1_FULL : HCBUFSTAT_ISTL0_FULL); 715 } 716 717 static int submit_req(struct isp1362_hcd *isp1362_hcd, struct urb *urb, 718 struct isp1362_ep *ep, struct isp1362_ep_queue *epq) 719 { 720 int index = epq->free_ptd; 721 722 prepare_ptd(isp1362_hcd, urb, ep, epq, 0); 723 index = claim_ptd_buffers(epq, ep, ep->length); 724 if (index == -ENOMEM) { 725 DBG(1, "%s: req %d No free %s PTD available: %d, %08lx:%08lx\n", __func__, 726 ep->num_req, epq->name, ep->num_ptds, epq->buf_map, epq->skip_map); 727 return index; 728 } else if (index == -EOVERFLOW) { 729 DBG(1, "%s: req %d Not enough space for %d byte %s PTD %d %08lx:%08lx\n", 730 __func__, ep->num_req, ep->length, epq->name, ep->num_ptds, 731 epq->buf_map, epq->skip_map); 732 return index; 733 } else 734 BUG_ON(index < 0); 735 list_add_tail(&ep->active, &epq->active); 736 DBG(1, "%s: ep %p req %d len %d added to active list %p\n", __func__, 737 ep, ep->num_req, ep->length, &epq->active); 738 DBG(1, "%s: Submitting %s PTD $%04x for ep %p req %d\n", __func__, epq->name, 739 ep->ptd_offset, ep, ep->num_req); 740 isp1362_write_ptd(isp1362_hcd, ep, epq); 741 __clear_bit(ep->ptd_index, &epq->skip_map); 742 743 return 0; 744 } 745 746 static void start_atl_transfers(struct isp1362_hcd *isp1362_hcd) 747 { 748 int ptd_count = 0; 749 struct isp1362_ep_queue *epq = &isp1362_hcd->atl_queue; 750 struct isp1362_ep *ep; 751 int defer = 0; 752 753 if (atomic_read(&epq->finishing)) { 754 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 755 return; 756 } 757 758 list_for_each_entry(ep, &isp1362_hcd->async, schedule) { 759 struct urb *urb = get_urb(ep); 760 int ret; 761 762 if (!list_empty(&ep->active)) { 763 DBG(2, "%s: Skipping active %s ep %p\n", __func__, epq->name, ep); 764 continue; 765 } 766 767 DBG(1, "%s: Processing %s ep %p req %d\n", __func__, epq->name, 768 ep, ep->num_req); 769 770 ret = submit_req(isp1362_hcd, urb, ep, epq); 771 if (ret == -ENOMEM) { 772 defer = 1; 773 break; 774 } else if (ret == -EOVERFLOW) { 775 defer = 1; 776 continue; 777 } 778 #ifdef BUGGY_PXA2XX_UDC_USBTEST 779 defer = ep->nextpid == USB_PID_SETUP; 780 #endif 781 ptd_count++; 782 } 783 784 /* Avoid starving of endpoints */ 785 if (isp1362_hcd->async.next != isp1362_hcd->async.prev) { 786 DBG(2, "%s: Cycling ASYNC schedule %d\n", __func__, ptd_count); 787 list_move(&isp1362_hcd->async, isp1362_hcd->async.next); 788 } 789 if (ptd_count || defer) 790 enable_atl_transfers(isp1362_hcd, defer ? 0 : ptd_count); 791 792 epq->ptd_count += ptd_count; 793 if (epq->ptd_count > epq->stat_maxptds) { 794 epq->stat_maxptds = epq->ptd_count; 795 DBG(0, "%s: max_ptds: %d\n", __func__, epq->stat_maxptds); 796 } 797 } 798 799 static void start_intl_transfers(struct isp1362_hcd *isp1362_hcd) 800 { 801 int ptd_count = 0; 802 struct isp1362_ep_queue *epq = &isp1362_hcd->intl_queue; 803 struct isp1362_ep *ep; 804 805 if (atomic_read(&epq->finishing)) { 806 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 807 return; 808 } 809 810 list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { 811 struct urb *urb = get_urb(ep); 812 int ret; 813 814 if (!list_empty(&ep->active)) { 815 DBG(1, "%s: Skipping active %s ep %p\n", __func__, 816 epq->name, ep); 817 continue; 818 } 819 820 DBG(1, "%s: Processing %s ep %p req %d\n", __func__, 821 epq->name, ep, ep->num_req); 822 ret = submit_req(isp1362_hcd, urb, ep, epq); 823 if (ret == -ENOMEM) 824 break; 825 else if (ret == -EOVERFLOW) 826 continue; 827 ptd_count++; 828 } 829 830 if (ptd_count) { 831 static int last_count; 832 833 if (ptd_count != last_count) { 834 DBG(0, "%s: ptd_count: %d\n", __func__, ptd_count); 835 last_count = ptd_count; 836 } 837 enable_intl_transfers(isp1362_hcd); 838 } 839 840 epq->ptd_count += ptd_count; 841 if (epq->ptd_count > epq->stat_maxptds) 842 epq->stat_maxptds = epq->ptd_count; 843 } 844 845 static inline int next_ptd(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) 846 { 847 u16 ptd_offset = ep->ptd_offset; 848 int num_ptds = (ep->length + PTD_HEADER_SIZE + (epq->blk_size - 1)) / epq->blk_size; 849 850 DBG(2, "%s: PTD offset $%04x + %04x => %d * %04x -> $%04x\n", __func__, ptd_offset, 851 ep->length, num_ptds, epq->blk_size, ptd_offset + num_ptds * epq->blk_size); 852 853 ptd_offset += num_ptds * epq->blk_size; 854 if (ptd_offset < epq->buf_start + epq->buf_size) 855 return ptd_offset; 856 else 857 return -ENOMEM; 858 } 859 860 static void start_iso_transfers(struct isp1362_hcd *isp1362_hcd) 861 { 862 int ptd_count = 0; 863 int flip = isp1362_hcd->istl_flip; 864 struct isp1362_ep_queue *epq; 865 int ptd_offset; 866 struct isp1362_ep *ep; 867 struct isp1362_ep *tmp; 868 u16 fno = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 869 870 fill2: 871 epq = &isp1362_hcd->istl_queue[flip]; 872 if (atomic_read(&epq->finishing)) { 873 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 874 return; 875 } 876 877 if (!list_empty(&epq->active)) 878 return; 879 880 ptd_offset = epq->buf_start; 881 list_for_each_entry_safe(ep, tmp, &isp1362_hcd->isoc, schedule) { 882 struct urb *urb = get_urb(ep); 883 s16 diff = fno - (u16)urb->start_frame; 884 885 DBG(1, "%s: Processing %s ep %p\n", __func__, epq->name, ep); 886 887 if (diff > urb->number_of_packets) { 888 /* time frame for this URB has elapsed */ 889 finish_request(isp1362_hcd, ep, urb, -EOVERFLOW); 890 continue; 891 } else if (diff < -1) { 892 /* URB is not due in this frame or the next one. 893 * Comparing with '-1' instead of '0' accounts for double 894 * buffering in the ISP1362 which enables us to queue the PTD 895 * one frame ahead of time 896 */ 897 } else if (diff == -1) { 898 /* submit PTD's that are due in the next frame */ 899 prepare_ptd(isp1362_hcd, urb, ep, epq, fno); 900 if (ptd_offset + PTD_HEADER_SIZE + ep->length > 901 epq->buf_start + epq->buf_size) { 902 pr_err("%s: Not enough ISO buffer space for %d byte PTD\n", 903 __func__, ep->length); 904 continue; 905 } 906 ep->ptd_offset = ptd_offset; 907 list_add_tail(&ep->active, &epq->active); 908 909 ptd_offset = next_ptd(epq, ep); 910 if (ptd_offset < 0) { 911 pr_warning("%s: req %d No more %s PTD buffers available\n", __func__, 912 ep->num_req, epq->name); 913 break; 914 } 915 } 916 } 917 list_for_each_entry(ep, &epq->active, active) { 918 if (epq->active.next == &ep->active) 919 ep->ptd.mps |= PTD_LAST_MSK; 920 isp1362_write_ptd(isp1362_hcd, ep, epq); 921 ptd_count++; 922 } 923 924 if (ptd_count) 925 enable_istl_transfers(isp1362_hcd, flip); 926 927 epq->ptd_count += ptd_count; 928 if (epq->ptd_count > epq->stat_maxptds) 929 epq->stat_maxptds = epq->ptd_count; 930 931 /* check, whether the second ISTL buffer may also be filled */ 932 if (!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 933 (flip ? HCBUFSTAT_ISTL0_FULL : HCBUFSTAT_ISTL1_FULL))) { 934 fno++; 935 ptd_count = 0; 936 flip = 1 - flip; 937 goto fill2; 938 } 939 } 940 941 static void finish_transfers(struct isp1362_hcd *isp1362_hcd, unsigned long done_map, 942 struct isp1362_ep_queue *epq) 943 { 944 struct isp1362_ep *ep; 945 struct isp1362_ep *tmp; 946 947 if (list_empty(&epq->active)) { 948 DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); 949 return; 950 } 951 952 DBG(1, "%s: Finishing %s transfers %08lx\n", __func__, epq->name, done_map); 953 954 atomic_inc(&epq->finishing); 955 list_for_each_entry_safe(ep, tmp, &epq->active, active) { 956 int index = ep->ptd_index; 957 958 DBG(1, "%s: Checking %s PTD[%02x] $%04x\n", __func__, epq->name, 959 index, ep->ptd_offset); 960 961 BUG_ON(index < 0); 962 if (__test_and_clear_bit(index, &done_map)) { 963 isp1362_read_ptd(isp1362_hcd, ep, epq); 964 epq->free_ptd = index; 965 BUG_ON(ep->num_ptds == 0); 966 release_ptd_buffers(epq, ep); 967 968 DBG(1, "%s: ep %p req %d removed from active list\n", __func__, 969 ep, ep->num_req); 970 if (!list_empty(&ep->remove_list)) { 971 list_del_init(&ep->remove_list); 972 DBG(1, "%s: ep %p removed from remove list\n", __func__, ep); 973 } 974 DBG(1, "%s: Postprocessing %s ep %p req %d\n", __func__, epq->name, 975 ep, ep->num_req); 976 postproc_ep(isp1362_hcd, ep); 977 } 978 if (!done_map) 979 break; 980 } 981 if (done_map) 982 pr_warning("%s: done_map not clear: %08lx:%08lx\n", __func__, done_map, 983 epq->skip_map); 984 atomic_dec(&epq->finishing); 985 } 986 987 static void finish_iso_transfers(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep_queue *epq) 988 { 989 struct isp1362_ep *ep; 990 struct isp1362_ep *tmp; 991 992 if (list_empty(&epq->active)) { 993 DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); 994 return; 995 } 996 997 DBG(1, "%s: Finishing %s transfers\n", __func__, epq->name); 998 999 atomic_inc(&epq->finishing); 1000 list_for_each_entry_safe(ep, tmp, &epq->active, active) { 1001 DBG(1, "%s: Checking PTD $%04x\n", __func__, ep->ptd_offset); 1002 1003 isp1362_read_ptd(isp1362_hcd, ep, epq); 1004 DBG(1, "%s: Postprocessing %s ep %p\n", __func__, epq->name, ep); 1005 postproc_ep(isp1362_hcd, ep); 1006 } 1007 WARN_ON(epq->blk_size != 0); 1008 atomic_dec(&epq->finishing); 1009 } 1010 1011 static irqreturn_t isp1362_irq(struct usb_hcd *hcd) 1012 { 1013 int handled = 0; 1014 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1015 u16 irqstat; 1016 u16 svc_mask; 1017 1018 spin_lock(&isp1362_hcd->lock); 1019 1020 BUG_ON(isp1362_hcd->irq_active++); 1021 1022 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 1023 1024 irqstat = isp1362_read_reg16(isp1362_hcd, HCuPINT); 1025 DBG(3, "%s: got IRQ %04x:%04x\n", __func__, irqstat, isp1362_hcd->irqenb); 1026 1027 /* only handle interrupts that are currently enabled */ 1028 irqstat &= isp1362_hcd->irqenb; 1029 isp1362_write_reg16(isp1362_hcd, HCuPINT, irqstat); 1030 svc_mask = irqstat; 1031 1032 if (irqstat & HCuPINT_SOF) { 1033 isp1362_hcd->irqenb &= ~HCuPINT_SOF; 1034 isp1362_hcd->irq_stat[ISP1362_INT_SOF]++; 1035 handled = 1; 1036 svc_mask &= ~HCuPINT_SOF; 1037 DBG(3, "%s: SOF\n", __func__); 1038 isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1039 if (!list_empty(&isp1362_hcd->remove_list)) 1040 finish_unlinks(isp1362_hcd); 1041 if (!list_empty(&isp1362_hcd->async) && !(irqstat & HCuPINT_ATL)) { 1042 if (list_empty(&isp1362_hcd->atl_queue.active)) { 1043 start_atl_transfers(isp1362_hcd); 1044 } else { 1045 isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); 1046 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, 1047 isp1362_hcd->atl_queue.skip_map); 1048 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 1049 } 1050 } 1051 } 1052 1053 if (irqstat & HCuPINT_ISTL0) { 1054 isp1362_hcd->irq_stat[ISP1362_INT_ISTL0]++; 1055 handled = 1; 1056 svc_mask &= ~HCuPINT_ISTL0; 1057 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL0_FULL); 1058 DBG(1, "%s: ISTL0\n", __func__); 1059 WARN_ON((int)!!isp1362_hcd->istl_flip); 1060 WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1061 HCBUFSTAT_ISTL0_ACTIVE); 1062 WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1063 HCBUFSTAT_ISTL0_DONE)); 1064 isp1362_hcd->irqenb &= ~HCuPINT_ISTL0; 1065 } 1066 1067 if (irqstat & HCuPINT_ISTL1) { 1068 isp1362_hcd->irq_stat[ISP1362_INT_ISTL1]++; 1069 handled = 1; 1070 svc_mask &= ~HCuPINT_ISTL1; 1071 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL1_FULL); 1072 DBG(1, "%s: ISTL1\n", __func__); 1073 WARN_ON(!(int)isp1362_hcd->istl_flip); 1074 WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1075 HCBUFSTAT_ISTL1_ACTIVE); 1076 WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1077 HCBUFSTAT_ISTL1_DONE)); 1078 isp1362_hcd->irqenb &= ~HCuPINT_ISTL1; 1079 } 1080 1081 if (irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) { 1082 WARN_ON((irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) == 1083 (HCuPINT_ISTL0 | HCuPINT_ISTL1)); 1084 finish_iso_transfers(isp1362_hcd, 1085 &isp1362_hcd->istl_queue[isp1362_hcd->istl_flip]); 1086 start_iso_transfers(isp1362_hcd); 1087 isp1362_hcd->istl_flip = 1 - isp1362_hcd->istl_flip; 1088 } 1089 1090 if (irqstat & HCuPINT_INTL) { 1091 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); 1092 u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCINTLSKIP); 1093 isp1362_hcd->irq_stat[ISP1362_INT_INTL]++; 1094 1095 DBG(2, "%s: INTL\n", __func__); 1096 1097 svc_mask &= ~HCuPINT_INTL; 1098 1099 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, skip_map | done_map); 1100 if (~(done_map | skip_map) == 0) 1101 /* All PTDs are finished, disable INTL processing entirely */ 1102 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 1103 1104 handled = 1; 1105 WARN_ON(!done_map); 1106 if (done_map) { 1107 DBG(3, "%s: INTL done_map %08x\n", __func__, done_map); 1108 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); 1109 start_intl_transfers(isp1362_hcd); 1110 } 1111 } 1112 1113 if (irqstat & HCuPINT_ATL) { 1114 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); 1115 u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCATLSKIP); 1116 isp1362_hcd->irq_stat[ISP1362_INT_ATL]++; 1117 1118 DBG(2, "%s: ATL\n", __func__); 1119 1120 svc_mask &= ~HCuPINT_ATL; 1121 1122 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, skip_map | done_map); 1123 if (~(done_map | skip_map) == 0) 1124 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 1125 if (done_map) { 1126 DBG(3, "%s: ATL done_map %08x\n", __func__, done_map); 1127 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); 1128 start_atl_transfers(isp1362_hcd); 1129 } 1130 handled = 1; 1131 } 1132 1133 if (irqstat & HCuPINT_OPR) { 1134 u32 intstat = isp1362_read_reg32(isp1362_hcd, HCINTSTAT); 1135 isp1362_hcd->irq_stat[ISP1362_INT_OPR]++; 1136 1137 svc_mask &= ~HCuPINT_OPR; 1138 DBG(2, "%s: OPR %08x:%08x\n", __func__, intstat, isp1362_hcd->intenb); 1139 intstat &= isp1362_hcd->intenb; 1140 if (intstat & OHCI_INTR_UE) { 1141 pr_err("Unrecoverable error\n"); 1142 /* FIXME: do here reset or cleanup or whatever */ 1143 } 1144 if (intstat & OHCI_INTR_RHSC) { 1145 isp1362_hcd->rhstatus = isp1362_read_reg32(isp1362_hcd, HCRHSTATUS); 1146 isp1362_hcd->rhport[0] = isp1362_read_reg32(isp1362_hcd, HCRHPORT1); 1147 isp1362_hcd->rhport[1] = isp1362_read_reg32(isp1362_hcd, HCRHPORT2); 1148 } 1149 if (intstat & OHCI_INTR_RD) { 1150 pr_info("%s: RESUME DETECTED\n", __func__); 1151 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1152 usb_hcd_resume_root_hub(hcd); 1153 } 1154 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, intstat); 1155 irqstat &= ~HCuPINT_OPR; 1156 handled = 1; 1157 } 1158 1159 if (irqstat & HCuPINT_SUSP) { 1160 isp1362_hcd->irq_stat[ISP1362_INT_SUSP]++; 1161 handled = 1; 1162 svc_mask &= ~HCuPINT_SUSP; 1163 1164 pr_info("%s: SUSPEND IRQ\n", __func__); 1165 } 1166 1167 if (irqstat & HCuPINT_CLKRDY) { 1168 isp1362_hcd->irq_stat[ISP1362_INT_CLKRDY]++; 1169 handled = 1; 1170 isp1362_hcd->irqenb &= ~HCuPINT_CLKRDY; 1171 svc_mask &= ~HCuPINT_CLKRDY; 1172 pr_info("%s: CLKRDY IRQ\n", __func__); 1173 } 1174 1175 if (svc_mask) 1176 pr_err("%s: Unserviced interrupt(s) %04x\n", __func__, svc_mask); 1177 1178 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 1179 isp1362_hcd->irq_active--; 1180 spin_unlock(&isp1362_hcd->lock); 1181 1182 return IRQ_RETVAL(handled); 1183 } 1184 1185 /*-------------------------------------------------------------------------*/ 1186 1187 #define MAX_PERIODIC_LOAD 900 /* out of 1000 usec */ 1188 static int balance(struct isp1362_hcd *isp1362_hcd, u16 interval, u16 load) 1189 { 1190 int i, branch = -ENOSPC; 1191 1192 /* search for the least loaded schedule branch of that interval 1193 * which has enough bandwidth left unreserved. 1194 */ 1195 for (i = 0; i < interval; i++) { 1196 if (branch < 0 || isp1362_hcd->load[branch] > isp1362_hcd->load[i]) { 1197 int j; 1198 1199 for (j = i; j < PERIODIC_SIZE; j += interval) { 1200 if ((isp1362_hcd->load[j] + load) > MAX_PERIODIC_LOAD) { 1201 pr_err("%s: new load %d load[%02x] %d max %d\n", __func__, 1202 load, j, isp1362_hcd->load[j], MAX_PERIODIC_LOAD); 1203 break; 1204 } 1205 } 1206 if (j < PERIODIC_SIZE) 1207 continue; 1208 branch = i; 1209 } 1210 } 1211 return branch; 1212 } 1213 1214 /* NB! ALL the code above this point runs with isp1362_hcd->lock 1215 held, irqs off 1216 */ 1217 1218 /*-------------------------------------------------------------------------*/ 1219 1220 static int isp1362_urb_enqueue(struct usb_hcd *hcd, 1221 struct urb *urb, 1222 gfp_t mem_flags) 1223 { 1224 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1225 struct usb_device *udev = urb->dev; 1226 unsigned int pipe = urb->pipe; 1227 int is_out = !usb_pipein(pipe); 1228 int type = usb_pipetype(pipe); 1229 int epnum = usb_pipeendpoint(pipe); 1230 struct usb_host_endpoint *hep = urb->ep; 1231 struct isp1362_ep *ep = NULL; 1232 unsigned long flags; 1233 int retval = 0; 1234 1235 DBG(3, "%s: urb %p\n", __func__, urb); 1236 1237 if (type == PIPE_ISOCHRONOUS) { 1238 pr_err("Isochronous transfers not supported\n"); 1239 return -ENOSPC; 1240 } 1241 1242 URB_DBG("%s: FA %d ep%d%s %s: len %d %s%s\n", __func__, 1243 usb_pipedevice(pipe), epnum, 1244 is_out ? "out" : "in", 1245 usb_pipecontrol(pipe) ? "ctrl" : 1246 usb_pipeint(pipe) ? "int" : 1247 usb_pipebulk(pipe) ? "bulk" : 1248 "iso", 1249 urb->transfer_buffer_length, 1250 (urb->transfer_flags & URB_ZERO_PACKET) ? "ZERO_PACKET " : "", 1251 !(urb->transfer_flags & URB_SHORT_NOT_OK) ? 1252 "short_ok" : ""); 1253 1254 /* avoid all allocations within spinlocks: request or endpoint */ 1255 if (!hep->hcpriv) { 1256 ep = kzalloc(sizeof *ep, mem_flags); 1257 if (!ep) 1258 return -ENOMEM; 1259 } 1260 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1261 1262 /* don't submit to a dead or disabled port */ 1263 if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) & 1264 USB_PORT_STAT_ENABLE) || 1265 !HC_IS_RUNNING(hcd->state)) { 1266 kfree(ep); 1267 retval = -ENODEV; 1268 goto fail_not_linked; 1269 } 1270 1271 retval = usb_hcd_link_urb_to_ep(hcd, urb); 1272 if (retval) { 1273 kfree(ep); 1274 goto fail_not_linked; 1275 } 1276 1277 if (hep->hcpriv) { 1278 ep = hep->hcpriv; 1279 } else { 1280 INIT_LIST_HEAD(&ep->schedule); 1281 INIT_LIST_HEAD(&ep->active); 1282 INIT_LIST_HEAD(&ep->remove_list); 1283 ep->udev = usb_get_dev(udev); 1284 ep->hep = hep; 1285 ep->epnum = epnum; 1286 ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); 1287 ep->ptd_offset = -EINVAL; 1288 ep->ptd_index = -EINVAL; 1289 usb_settoggle(udev, epnum, is_out, 0); 1290 1291 if (type == PIPE_CONTROL) 1292 ep->nextpid = USB_PID_SETUP; 1293 else if (is_out) 1294 ep->nextpid = USB_PID_OUT; 1295 else 1296 ep->nextpid = USB_PID_IN; 1297 1298 switch (type) { 1299 case PIPE_ISOCHRONOUS: 1300 case PIPE_INTERRUPT: 1301 if (urb->interval > PERIODIC_SIZE) 1302 urb->interval = PERIODIC_SIZE; 1303 ep->interval = urb->interval; 1304 ep->branch = PERIODIC_SIZE; 1305 ep->load = usb_calc_bus_time(udev->speed, !is_out, 1306 (type == PIPE_ISOCHRONOUS), 1307 usb_maxpacket(udev, pipe, is_out)) / 1000; 1308 break; 1309 } 1310 hep->hcpriv = ep; 1311 } 1312 ep->num_req = isp1362_hcd->req_serial++; 1313 1314 /* maybe put endpoint into schedule */ 1315 switch (type) { 1316 case PIPE_CONTROL: 1317 case PIPE_BULK: 1318 if (list_empty(&ep->schedule)) { 1319 DBG(1, "%s: Adding ep %p req %d to async schedule\n", 1320 __func__, ep, ep->num_req); 1321 list_add_tail(&ep->schedule, &isp1362_hcd->async); 1322 } 1323 break; 1324 case PIPE_ISOCHRONOUS: 1325 case PIPE_INTERRUPT: 1326 urb->interval = ep->interval; 1327 1328 /* urb submitted for already existing EP */ 1329 if (ep->branch < PERIODIC_SIZE) 1330 break; 1331 1332 retval = balance(isp1362_hcd, ep->interval, ep->load); 1333 if (retval < 0) { 1334 pr_err("%s: balance returned %d\n", __func__, retval); 1335 goto fail; 1336 } 1337 ep->branch = retval; 1338 retval = 0; 1339 isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1340 DBG(1, "%s: Current frame %04x branch %02x start_frame %04x(%04x)\n", 1341 __func__, isp1362_hcd->fmindex, ep->branch, 1342 ((isp1362_hcd->fmindex + PERIODIC_SIZE - 1) & 1343 ~(PERIODIC_SIZE - 1)) + ep->branch, 1344 (isp1362_hcd->fmindex & (PERIODIC_SIZE - 1)) + ep->branch); 1345 1346 if (list_empty(&ep->schedule)) { 1347 if (type == PIPE_ISOCHRONOUS) { 1348 u16 frame = isp1362_hcd->fmindex; 1349 1350 frame += max_t(u16, 8, ep->interval); 1351 frame &= ~(ep->interval - 1); 1352 frame |= ep->branch; 1353 if (frame_before(frame, isp1362_hcd->fmindex)) 1354 frame += ep->interval; 1355 urb->start_frame = frame; 1356 1357 DBG(1, "%s: Adding ep %p to isoc schedule\n", __func__, ep); 1358 list_add_tail(&ep->schedule, &isp1362_hcd->isoc); 1359 } else { 1360 DBG(1, "%s: Adding ep %p to periodic schedule\n", __func__, ep); 1361 list_add_tail(&ep->schedule, &isp1362_hcd->periodic); 1362 } 1363 } else 1364 DBG(1, "%s: ep %p already scheduled\n", __func__, ep); 1365 1366 DBG(2, "%s: load %d bandwidth %d -> %d\n", __func__, 1367 ep->load / ep->interval, isp1362_hcd->load[ep->branch], 1368 isp1362_hcd->load[ep->branch] + ep->load); 1369 isp1362_hcd->load[ep->branch] += ep->load; 1370 } 1371 1372 urb->hcpriv = hep; 1373 ALIGNSTAT(isp1362_hcd, urb->transfer_buffer); 1374 1375 switch (type) { 1376 case PIPE_CONTROL: 1377 case PIPE_BULK: 1378 start_atl_transfers(isp1362_hcd); 1379 break; 1380 case PIPE_INTERRUPT: 1381 start_intl_transfers(isp1362_hcd); 1382 break; 1383 case PIPE_ISOCHRONOUS: 1384 start_iso_transfers(isp1362_hcd); 1385 break; 1386 default: 1387 BUG(); 1388 } 1389 fail: 1390 if (retval) 1391 usb_hcd_unlink_urb_from_ep(hcd, urb); 1392 1393 1394 fail_not_linked: 1395 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1396 if (retval) 1397 DBG(0, "%s: urb %p failed with %d\n", __func__, urb, retval); 1398 return retval; 1399 } 1400 1401 static int isp1362_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) 1402 { 1403 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1404 struct usb_host_endpoint *hep; 1405 unsigned long flags; 1406 struct isp1362_ep *ep; 1407 int retval = 0; 1408 1409 DBG(3, "%s: urb %p\n", __func__, urb); 1410 1411 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1412 retval = usb_hcd_check_unlink_urb(hcd, urb, status); 1413 if (retval) 1414 goto done; 1415 1416 hep = urb->hcpriv; 1417 1418 if (!hep) { 1419 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1420 return -EIDRM; 1421 } 1422 1423 ep = hep->hcpriv; 1424 if (ep) { 1425 /* In front of queue? */ 1426 if (ep->hep->urb_list.next == &urb->urb_list) { 1427 if (!list_empty(&ep->active)) { 1428 DBG(1, "%s: urb %p ep %p req %d active PTD[%d] $%04x\n", __func__, 1429 urb, ep, ep->num_req, ep->ptd_index, ep->ptd_offset); 1430 /* disable processing and queue PTD for removal */ 1431 remove_ptd(isp1362_hcd, ep); 1432 urb = NULL; 1433 } 1434 } 1435 if (urb) { 1436 DBG(1, "%s: Finishing ep %p req %d\n", __func__, ep, 1437 ep->num_req); 1438 finish_request(isp1362_hcd, ep, urb, status); 1439 } else 1440 DBG(1, "%s: urb %p active; wait4irq\n", __func__, urb); 1441 } else { 1442 pr_warning("%s: No EP in URB %p\n", __func__, urb); 1443 retval = -EINVAL; 1444 } 1445 done: 1446 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1447 1448 DBG(3, "%s: exit\n", __func__); 1449 1450 return retval; 1451 } 1452 1453 static void isp1362_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) 1454 { 1455 struct isp1362_ep *ep = hep->hcpriv; 1456 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1457 unsigned long flags; 1458 1459 DBG(1, "%s: ep %p\n", __func__, ep); 1460 if (!ep) 1461 return; 1462 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1463 if (!list_empty(&hep->urb_list)) { 1464 if (!list_empty(&ep->active) && list_empty(&ep->remove_list)) { 1465 DBG(1, "%s: Removing ep %p req %d PTD[%d] $%04x\n", __func__, 1466 ep, ep->num_req, ep->ptd_index, ep->ptd_offset); 1467 remove_ptd(isp1362_hcd, ep); 1468 pr_info("%s: Waiting for Interrupt to clean up\n", __func__); 1469 } 1470 } 1471 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1472 /* Wait for interrupt to clear out active list */ 1473 while (!list_empty(&ep->active)) 1474 msleep(1); 1475 1476 DBG(1, "%s: Freeing EP %p\n", __func__, ep); 1477 1478 usb_put_dev(ep->udev); 1479 kfree(ep); 1480 hep->hcpriv = NULL; 1481 } 1482 1483 static int isp1362_get_frame(struct usb_hcd *hcd) 1484 { 1485 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1486 u32 fmnum; 1487 unsigned long flags; 1488 1489 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1490 fmnum = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1491 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1492 1493 return (int)fmnum; 1494 } 1495 1496 /*-------------------------------------------------------------------------*/ 1497 1498 /* Adapted from ohci-hub.c */ 1499 static int isp1362_hub_status_data(struct usb_hcd *hcd, char *buf) 1500 { 1501 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1502 int ports, i, changed = 0; 1503 unsigned long flags; 1504 1505 if (!HC_IS_RUNNING(hcd->state)) 1506 return -ESHUTDOWN; 1507 1508 /* Report no status change now, if we are scheduled to be 1509 called later */ 1510 if (timer_pending(&hcd->rh_timer)) 1511 return 0; 1512 1513 ports = isp1362_hcd->rhdesca & RH_A_NDP; 1514 BUG_ON(ports > 2); 1515 1516 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1517 /* init status */ 1518 if (isp1362_hcd->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) 1519 buf[0] = changed = 1; 1520 else 1521 buf[0] = 0; 1522 1523 for (i = 0; i < ports; i++) { 1524 u32 status = isp1362_hcd->rhport[i]; 1525 1526 if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | 1527 RH_PS_OCIC | RH_PS_PRSC)) { 1528 changed = 1; 1529 buf[0] |= 1 << (i + 1); 1530 continue; 1531 } 1532 1533 if (!(status & RH_PS_CCS)) 1534 continue; 1535 } 1536 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1537 return changed; 1538 } 1539 1540 static void isp1362_hub_descriptor(struct isp1362_hcd *isp1362_hcd, 1541 struct usb_hub_descriptor *desc) 1542 { 1543 u32 reg = isp1362_hcd->rhdesca; 1544 1545 DBG(3, "%s: enter\n", __func__); 1546 1547 desc->bDescriptorType = 0x29; 1548 desc->bDescLength = 9; 1549 desc->bHubContrCurrent = 0; 1550 desc->bNbrPorts = reg & 0x3; 1551 /* Power switching, device type, overcurrent. */ 1552 desc->wHubCharacteristics = cpu_to_le16((reg >> 8) & 0x1f); 1553 DBG(0, "%s: hubcharacteristics = %02x\n", __func__, cpu_to_le16((reg >> 8) & 0x1f)); 1554 desc->bPwrOn2PwrGood = (reg >> 24) & 0xff; 1555 /* ports removable, and legacy PortPwrCtrlMask */ 1556 desc->u.hs.DeviceRemovable[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1; 1557 desc->u.hs.DeviceRemovable[1] = ~0; 1558 1559 DBG(3, "%s: exit\n", __func__); 1560 } 1561 1562 /* Adapted from ohci-hub.c */ 1563 static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 1564 u16 wIndex, char *buf, u16 wLength) 1565 { 1566 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1567 int retval = 0; 1568 unsigned long flags; 1569 unsigned long t1; 1570 int ports = isp1362_hcd->rhdesca & RH_A_NDP; 1571 u32 tmp = 0; 1572 1573 switch (typeReq) { 1574 case ClearHubFeature: 1575 DBG(0, "ClearHubFeature: "); 1576 switch (wValue) { 1577 case C_HUB_OVER_CURRENT: 1578 _DBG(0, "C_HUB_OVER_CURRENT\n"); 1579 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1580 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_OCIC); 1581 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1582 case C_HUB_LOCAL_POWER: 1583 _DBG(0, "C_HUB_LOCAL_POWER\n"); 1584 break; 1585 default: 1586 goto error; 1587 } 1588 break; 1589 case SetHubFeature: 1590 DBG(0, "SetHubFeature: "); 1591 switch (wValue) { 1592 case C_HUB_OVER_CURRENT: 1593 case C_HUB_LOCAL_POWER: 1594 _DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); 1595 break; 1596 default: 1597 goto error; 1598 } 1599 break; 1600 case GetHubDescriptor: 1601 DBG(0, "GetHubDescriptor\n"); 1602 isp1362_hub_descriptor(isp1362_hcd, (struct usb_hub_descriptor *)buf); 1603 break; 1604 case GetHubStatus: 1605 DBG(0, "GetHubStatus\n"); 1606 put_unaligned(cpu_to_le32(0), (__le32 *) buf); 1607 break; 1608 case GetPortStatus: 1609 #ifndef VERBOSE 1610 DBG(0, "GetPortStatus\n"); 1611 #endif 1612 if (!wIndex || wIndex > ports) 1613 goto error; 1614 tmp = isp1362_hcd->rhport[--wIndex]; 1615 put_unaligned(cpu_to_le32(tmp), (__le32 *) buf); 1616 break; 1617 case ClearPortFeature: 1618 DBG(0, "ClearPortFeature: "); 1619 if (!wIndex || wIndex > ports) 1620 goto error; 1621 wIndex--; 1622 1623 switch (wValue) { 1624 case USB_PORT_FEAT_ENABLE: 1625 _DBG(0, "USB_PORT_FEAT_ENABLE\n"); 1626 tmp = RH_PS_CCS; 1627 break; 1628 case USB_PORT_FEAT_C_ENABLE: 1629 _DBG(0, "USB_PORT_FEAT_C_ENABLE\n"); 1630 tmp = RH_PS_PESC; 1631 break; 1632 case USB_PORT_FEAT_SUSPEND: 1633 _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); 1634 tmp = RH_PS_POCI; 1635 break; 1636 case USB_PORT_FEAT_C_SUSPEND: 1637 _DBG(0, "USB_PORT_FEAT_C_SUSPEND\n"); 1638 tmp = RH_PS_PSSC; 1639 break; 1640 case USB_PORT_FEAT_POWER: 1641 _DBG(0, "USB_PORT_FEAT_POWER\n"); 1642 tmp = RH_PS_LSDA; 1643 1644 break; 1645 case USB_PORT_FEAT_C_CONNECTION: 1646 _DBG(0, "USB_PORT_FEAT_C_CONNECTION\n"); 1647 tmp = RH_PS_CSC; 1648 break; 1649 case USB_PORT_FEAT_C_OVER_CURRENT: 1650 _DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n"); 1651 tmp = RH_PS_OCIC; 1652 break; 1653 case USB_PORT_FEAT_C_RESET: 1654 _DBG(0, "USB_PORT_FEAT_C_RESET\n"); 1655 tmp = RH_PS_PRSC; 1656 break; 1657 default: 1658 goto error; 1659 } 1660 1661 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1662 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, tmp); 1663 isp1362_hcd->rhport[wIndex] = 1664 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1665 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1666 break; 1667 case SetPortFeature: 1668 DBG(0, "SetPortFeature: "); 1669 if (!wIndex || wIndex > ports) 1670 goto error; 1671 wIndex--; 1672 switch (wValue) { 1673 case USB_PORT_FEAT_SUSPEND: 1674 _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); 1675 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1676 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS); 1677 isp1362_hcd->rhport[wIndex] = 1678 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1679 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1680 break; 1681 case USB_PORT_FEAT_POWER: 1682 _DBG(0, "USB_PORT_FEAT_POWER\n"); 1683 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1684 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS); 1685 isp1362_hcd->rhport[wIndex] = 1686 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1687 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1688 break; 1689 case USB_PORT_FEAT_RESET: 1690 _DBG(0, "USB_PORT_FEAT_RESET\n"); 1691 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1692 1693 t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH); 1694 while (time_before(jiffies, t1)) { 1695 /* spin until any current reset finishes */ 1696 for (;;) { 1697 tmp = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1698 if (!(tmp & RH_PS_PRS)) 1699 break; 1700 udelay(500); 1701 } 1702 if (!(tmp & RH_PS_CCS)) 1703 break; 1704 /* Reset lasts 10ms (claims datasheet) */ 1705 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, (RH_PS_PRS)); 1706 1707 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1708 msleep(10); 1709 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1710 } 1711 1712 isp1362_hcd->rhport[wIndex] = isp1362_read_reg32(isp1362_hcd, 1713 HCRHPORT1 + wIndex); 1714 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1715 break; 1716 default: 1717 goto error; 1718 } 1719 break; 1720 1721 default: 1722 error: 1723 /* "protocol stall" on error */ 1724 _DBG(0, "PROTOCOL STALL\n"); 1725 retval = -EPIPE; 1726 } 1727 1728 return retval; 1729 } 1730 1731 #ifdef CONFIG_PM 1732 static int isp1362_bus_suspend(struct usb_hcd *hcd) 1733 { 1734 int status = 0; 1735 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1736 unsigned long flags; 1737 1738 if (time_before(jiffies, isp1362_hcd->next_statechange)) 1739 msleep(5); 1740 1741 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1742 1743 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1744 switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { 1745 case OHCI_USB_RESUME: 1746 DBG(0, "%s: resume/suspend?\n", __func__); 1747 isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; 1748 isp1362_hcd->hc_control |= OHCI_USB_RESET; 1749 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1750 /* FALL THROUGH */ 1751 case OHCI_USB_RESET: 1752 status = -EBUSY; 1753 pr_warning("%s: needs reinit!\n", __func__); 1754 goto done; 1755 case OHCI_USB_SUSPEND: 1756 pr_warning("%s: already suspended?\n", __func__); 1757 goto done; 1758 } 1759 DBG(0, "%s: suspend root hub\n", __func__); 1760 1761 /* First stop any processing */ 1762 hcd->state = HC_STATE_QUIESCING; 1763 if (!list_empty(&isp1362_hcd->atl_queue.active) || 1764 !list_empty(&isp1362_hcd->intl_queue.active) || 1765 !list_empty(&isp1362_hcd->istl_queue[0] .active) || 1766 !list_empty(&isp1362_hcd->istl_queue[1] .active)) { 1767 int limit; 1768 1769 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); 1770 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); 1771 isp1362_write_reg16(isp1362_hcd, HCBUFSTAT, 0); 1772 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 1773 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, OHCI_INTR_SF); 1774 1775 DBG(0, "%s: stopping schedules ...\n", __func__); 1776 limit = 2000; 1777 while (limit > 0) { 1778 udelay(250); 1779 limit -= 250; 1780 if (isp1362_read_reg32(isp1362_hcd, HCINTSTAT) & OHCI_INTR_SF) 1781 break; 1782 } 1783 mdelay(7); 1784 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ATL) { 1785 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); 1786 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); 1787 } 1788 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_INTL) { 1789 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); 1790 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); 1791 } 1792 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL0) 1793 finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[0]); 1794 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL1) 1795 finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[1]); 1796 } 1797 DBG(0, "%s: HCINTSTAT: %08x\n", __func__, 1798 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1799 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, 1800 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1801 1802 /* Suspend hub */ 1803 isp1362_hcd->hc_control = OHCI_USB_SUSPEND; 1804 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1805 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1806 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1807 1808 #if 1 1809 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1810 if ((isp1362_hcd->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_SUSPEND) { 1811 pr_err("%s: controller won't suspend %08x\n", __func__, 1812 isp1362_hcd->hc_control); 1813 status = -EBUSY; 1814 } else 1815 #endif 1816 { 1817 /* no resumes until devices finish suspending */ 1818 isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(5); 1819 } 1820 done: 1821 if (status == 0) { 1822 hcd->state = HC_STATE_SUSPENDED; 1823 DBG(0, "%s: HCD suspended: %08x\n", __func__, 1824 isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 1825 } 1826 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1827 return status; 1828 } 1829 1830 static int isp1362_bus_resume(struct usb_hcd *hcd) 1831 { 1832 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1833 u32 port; 1834 unsigned long flags; 1835 int status = -EINPROGRESS; 1836 1837 if (time_before(jiffies, isp1362_hcd->next_statechange)) 1838 msleep(5); 1839 1840 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1841 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1842 pr_info("%s: HCCONTROL: %08x\n", __func__, isp1362_hcd->hc_control); 1843 if (hcd->state == HC_STATE_RESUMING) { 1844 pr_warning("%s: duplicate resume\n", __func__); 1845 status = 0; 1846 } else 1847 switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { 1848 case OHCI_USB_SUSPEND: 1849 DBG(0, "%s: resume root hub\n", __func__); 1850 isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; 1851 isp1362_hcd->hc_control |= OHCI_USB_RESUME; 1852 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1853 break; 1854 case OHCI_USB_RESUME: 1855 /* HCFS changes sometime after INTR_RD */ 1856 DBG(0, "%s: remote wakeup\n", __func__); 1857 break; 1858 case OHCI_USB_OPER: 1859 DBG(0, "%s: odd resume\n", __func__); 1860 status = 0; 1861 hcd->self.root_hub->dev.power.power_state = PMSG_ON; 1862 break; 1863 default: /* RESET, we lost power */ 1864 DBG(0, "%s: root hub hardware reset\n", __func__); 1865 status = -EBUSY; 1866 } 1867 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1868 if (status == -EBUSY) { 1869 DBG(0, "%s: Restarting HC\n", __func__); 1870 isp1362_hc_stop(hcd); 1871 return isp1362_hc_start(hcd); 1872 } 1873 if (status != -EINPROGRESS) 1874 return status; 1875 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1876 port = isp1362_read_reg32(isp1362_hcd, HCRHDESCA) & RH_A_NDP; 1877 while (port--) { 1878 u32 stat = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + port); 1879 1880 /* force global, not selective, resume */ 1881 if (!(stat & RH_PS_PSS)) { 1882 DBG(0, "%s: Not Resuming RH port %d\n", __func__, port); 1883 continue; 1884 } 1885 DBG(0, "%s: Resuming RH port %d\n", __func__, port); 1886 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + port, RH_PS_POCI); 1887 } 1888 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1889 1890 /* Some controllers (lucent) need extra-long delays */ 1891 hcd->state = HC_STATE_RESUMING; 1892 mdelay(20 /* usb 11.5.1.10 */ + 15); 1893 1894 isp1362_hcd->hc_control = OHCI_USB_OPER; 1895 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1896 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1897 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1898 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1899 /* TRSMRCY */ 1900 msleep(10); 1901 1902 /* keep it alive for ~5x suspend + resume costs */ 1903 isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(250); 1904 1905 hcd->self.root_hub->dev.power.power_state = PMSG_ON; 1906 hcd->state = HC_STATE_RUNNING; 1907 return 0; 1908 } 1909 #else 1910 #define isp1362_bus_suspend NULL 1911 #define isp1362_bus_resume NULL 1912 #endif 1913 1914 /*-------------------------------------------------------------------------*/ 1915 1916 #ifdef STUB_DEBUG_FILE 1917 1918 static inline void create_debug_file(struct isp1362_hcd *isp1362_hcd) 1919 { 1920 } 1921 static inline void remove_debug_file(struct isp1362_hcd *isp1362_hcd) 1922 { 1923 } 1924 1925 #else 1926 1927 #include <linux/proc_fs.h> 1928 #include <linux/seq_file.h> 1929 1930 static void dump_irq(struct seq_file *s, char *label, u16 mask) 1931 { 1932 seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask, 1933 mask & HCuPINT_CLKRDY ? " clkrdy" : "", 1934 mask & HCuPINT_SUSP ? " susp" : "", 1935 mask & HCuPINT_OPR ? " opr" : "", 1936 mask & HCuPINT_EOT ? " eot" : "", 1937 mask & HCuPINT_ATL ? " atl" : "", 1938 mask & HCuPINT_SOF ? " sof" : ""); 1939 } 1940 1941 static void dump_int(struct seq_file *s, char *label, u32 mask) 1942 { 1943 seq_printf(s, "%-15s %08x%s%s%s%s%s%s%s\n", label, mask, 1944 mask & OHCI_INTR_MIE ? " MIE" : "", 1945 mask & OHCI_INTR_RHSC ? " rhsc" : "", 1946 mask & OHCI_INTR_FNO ? " fno" : "", 1947 mask & OHCI_INTR_UE ? " ue" : "", 1948 mask & OHCI_INTR_RD ? " rd" : "", 1949 mask & OHCI_INTR_SF ? " sof" : "", 1950 mask & OHCI_INTR_SO ? " so" : ""); 1951 } 1952 1953 static void dump_ctrl(struct seq_file *s, char *label, u32 mask) 1954 { 1955 seq_printf(s, "%-15s %08x%s%s%s\n", label, mask, 1956 mask & OHCI_CTRL_RWC ? " rwc" : "", 1957 mask & OHCI_CTRL_RWE ? " rwe" : "", 1958 ({ 1959 char *hcfs; 1960 switch (mask & OHCI_CTRL_HCFS) { 1961 case OHCI_USB_OPER: 1962 hcfs = " oper"; 1963 break; 1964 case OHCI_USB_RESET: 1965 hcfs = " reset"; 1966 break; 1967 case OHCI_USB_RESUME: 1968 hcfs = " resume"; 1969 break; 1970 case OHCI_USB_SUSPEND: 1971 hcfs = " suspend"; 1972 break; 1973 default: 1974 hcfs = " ?"; 1975 } 1976 hcfs; 1977 })); 1978 } 1979 1980 static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd) 1981 { 1982 seq_printf(s, "HCREVISION [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCREVISION), 1983 isp1362_read_reg32(isp1362_hcd, HCREVISION)); 1984 seq_printf(s, "HCCONTROL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCONTROL), 1985 isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 1986 seq_printf(s, "HCCMDSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCMDSTAT), 1987 isp1362_read_reg32(isp1362_hcd, HCCMDSTAT)); 1988 seq_printf(s, "HCINTSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTSTAT), 1989 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1990 seq_printf(s, "HCINTENB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTENB), 1991 isp1362_read_reg32(isp1362_hcd, HCINTENB)); 1992 seq_printf(s, "HCFMINTVL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMINTVL), 1993 isp1362_read_reg32(isp1362_hcd, HCFMINTVL)); 1994 seq_printf(s, "HCFMREM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMREM), 1995 isp1362_read_reg32(isp1362_hcd, HCFMREM)); 1996 seq_printf(s, "HCFMNUM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMNUM), 1997 isp1362_read_reg32(isp1362_hcd, HCFMNUM)); 1998 seq_printf(s, "HCLSTHRESH [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCLSTHRESH), 1999 isp1362_read_reg32(isp1362_hcd, HCLSTHRESH)); 2000 seq_printf(s, "HCRHDESCA [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCA), 2001 isp1362_read_reg32(isp1362_hcd, HCRHDESCA)); 2002 seq_printf(s, "HCRHDESCB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCB), 2003 isp1362_read_reg32(isp1362_hcd, HCRHDESCB)); 2004 seq_printf(s, "HCRHSTATUS [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHSTATUS), 2005 isp1362_read_reg32(isp1362_hcd, HCRHSTATUS)); 2006 seq_printf(s, "HCRHPORT1 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT1), 2007 isp1362_read_reg32(isp1362_hcd, HCRHPORT1)); 2008 seq_printf(s, "HCRHPORT2 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT2), 2009 isp1362_read_reg32(isp1362_hcd, HCRHPORT2)); 2010 seq_printf(s, "\n"); 2011 seq_printf(s, "HCHWCFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCHWCFG), 2012 isp1362_read_reg16(isp1362_hcd, HCHWCFG)); 2013 seq_printf(s, "HCDMACFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCDMACFG), 2014 isp1362_read_reg16(isp1362_hcd, HCDMACFG)); 2015 seq_printf(s, "HCXFERCTR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCXFERCTR), 2016 isp1362_read_reg16(isp1362_hcd, HCXFERCTR)); 2017 seq_printf(s, "HCuPINT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINT), 2018 isp1362_read_reg16(isp1362_hcd, HCuPINT)); 2019 seq_printf(s, "HCuPINTENB [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINTENB), 2020 isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); 2021 seq_printf(s, "HCCHIPID [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCCHIPID), 2022 isp1362_read_reg16(isp1362_hcd, HCCHIPID)); 2023 seq_printf(s, "HCSCRATCH [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCSCRATCH), 2024 isp1362_read_reg16(isp1362_hcd, HCSCRATCH)); 2025 seq_printf(s, "HCBUFSTAT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCBUFSTAT), 2026 isp1362_read_reg16(isp1362_hcd, HCBUFSTAT)); 2027 seq_printf(s, "HCDIRADDR [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCDIRADDR), 2028 isp1362_read_reg32(isp1362_hcd, HCDIRADDR)); 2029 #if 0 2030 seq_printf(s, "HCDIRDATA [%02x] %04x\n", ISP1362_REG_NO(HCDIRDATA), 2031 isp1362_read_reg16(isp1362_hcd, HCDIRDATA)); 2032 #endif 2033 seq_printf(s, "HCISTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLBUFSZ), 2034 isp1362_read_reg16(isp1362_hcd, HCISTLBUFSZ)); 2035 seq_printf(s, "HCISTLRATE [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLRATE), 2036 isp1362_read_reg16(isp1362_hcd, HCISTLRATE)); 2037 seq_printf(s, "\n"); 2038 seq_printf(s, "HCINTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBUFSZ), 2039 isp1362_read_reg16(isp1362_hcd, HCINTLBUFSZ)); 2040 seq_printf(s, "HCINTLBLKSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBLKSZ), 2041 isp1362_read_reg16(isp1362_hcd, HCINTLBLKSZ)); 2042 seq_printf(s, "HCINTLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLDONE), 2043 isp1362_read_reg32(isp1362_hcd, HCINTLDONE)); 2044 seq_printf(s, "HCINTLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLSKIP), 2045 isp1362_read_reg32(isp1362_hcd, HCINTLSKIP)); 2046 seq_printf(s, "HCINTLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLLAST), 2047 isp1362_read_reg32(isp1362_hcd, HCINTLLAST)); 2048 seq_printf(s, "HCINTLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLCURR), 2049 isp1362_read_reg16(isp1362_hcd, HCINTLCURR)); 2050 seq_printf(s, "\n"); 2051 seq_printf(s, "HCATLBUFSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBUFSZ), 2052 isp1362_read_reg16(isp1362_hcd, HCATLBUFSZ)); 2053 seq_printf(s, "HCATLBLKSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBLKSZ), 2054 isp1362_read_reg16(isp1362_hcd, HCATLBLKSZ)); 2055 #if 0 2056 seq_printf(s, "HCATLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDONE), 2057 isp1362_read_reg32(isp1362_hcd, HCATLDONE)); 2058 #endif 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 2072 static 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 /* FIXME: don't show the following in suspended state */ 2094 spin_lock_irq(&isp1362_hcd->lock); 2095 2096 dump_irq(s, "hc_irq_enable", isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); 2097 dump_irq(s, "hc_irq_status", isp1362_read_reg16(isp1362_hcd, HCuPINT)); 2098 dump_int(s, "ohci_int_enable", isp1362_read_reg32(isp1362_hcd, HCINTENB)); 2099 dump_int(s, "ohci_int_status", isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 2100 dump_ctrl(s, "ohci_control", isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 2101 2102 for (i = 0; i < NUM_ISP1362_IRQS; i++) 2103 if (isp1362_hcd->irq_stat[i]) 2104 seq_printf(s, "%-15s: %d\n", 2105 ISP1362_INT_NAME(i), isp1362_hcd->irq_stat[i]); 2106 2107 dump_regs(s, isp1362_hcd); 2108 list_for_each_entry(ep, &isp1362_hcd->async, schedule) { 2109 struct urb *urb; 2110 2111 seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, ep->epnum, 2112 ({ 2113 char *s; 2114 switch (ep->nextpid) { 2115 case USB_PID_IN: 2116 s = "in"; 2117 break; 2118 case USB_PID_OUT: 2119 s = "out"; 2120 break; 2121 case USB_PID_SETUP: 2122 s = "setup"; 2123 break; 2124 case USB_PID_ACK: 2125 s = "status"; 2126 break; 2127 default: 2128 s = "?"; 2129 break; 2130 }; 2131 s;}), ep->maxpacket) ; 2132 list_for_each_entry(urb, &ep->hep->urb_list, urb_list) { 2133 seq_printf(s, " urb%p, %d/%d\n", urb, 2134 urb->actual_length, 2135 urb->transfer_buffer_length); 2136 } 2137 } 2138 if (!list_empty(&isp1362_hcd->async)) 2139 seq_printf(s, "\n"); 2140 dump_ptd_queue(&isp1362_hcd->atl_queue); 2141 2142 seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE); 2143 2144 list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { 2145 seq_printf(s, "branch:%2d load:%3d PTD[%d] $%04x:\n", ep->branch, 2146 isp1362_hcd->load[ep->branch], ep->ptd_index, ep->ptd_offset); 2147 2148 seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", 2149 ep->interval, ep, 2150 (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", 2151 ep->udev->devnum, ep->epnum, 2152 (ep->epnum == 0) ? "" : 2153 ((ep->nextpid == USB_PID_IN) ? 2154 "in" : "out"), ep->maxpacket); 2155 } 2156 dump_ptd_queue(&isp1362_hcd->intl_queue); 2157 2158 seq_printf(s, "ISO:\n"); 2159 2160 list_for_each_entry(ep, &isp1362_hcd->isoc, schedule) { 2161 seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", 2162 ep->interval, ep, 2163 (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", 2164 ep->udev->devnum, ep->epnum, 2165 (ep->epnum == 0) ? "" : 2166 ((ep->nextpid == USB_PID_IN) ? 2167 "in" : "out"), ep->maxpacket); 2168 } 2169 2170 spin_unlock_irq(&isp1362_hcd->lock); 2171 seq_printf(s, "\n"); 2172 2173 return 0; 2174 } 2175 2176 static int proc_isp1362_open(struct inode *inode, struct file *file) 2177 { 2178 return single_open(file, proc_isp1362_show, PDE(inode)->data); 2179 } 2180 2181 static const struct file_operations proc_ops = { 2182 .open = proc_isp1362_open, 2183 .read = seq_read, 2184 .llseek = seq_lseek, 2185 .release = single_release, 2186 }; 2187 2188 /* expect just one isp1362_hcd per system */ 2189 static const char proc_filename[] = "driver/isp1362"; 2190 2191 static void create_debug_file(struct isp1362_hcd *isp1362_hcd) 2192 { 2193 struct proc_dir_entry *pde; 2194 2195 pde = create_proc_entry(proc_filename, 0, NULL); 2196 if (pde == NULL) { 2197 pr_warning("%s: Failed to create debug file '%s'\n", __func__, proc_filename); 2198 return; 2199 } 2200 2201 pde->proc_fops = &proc_ops; 2202 pde->data = isp1362_hcd; 2203 isp1362_hcd->pde = pde; 2204 } 2205 2206 static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) 2207 { 2208 if (isp1362_hcd->pde) 2209 remove_proc_entry(proc_filename, NULL); 2210 } 2211 2212 #endif 2213 2214 /*-------------------------------------------------------------------------*/ 2215 2216 static void __isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) 2217 { 2218 int tmp = 20; 2219 2220 isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC); 2221 isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR); 2222 while (--tmp) { 2223 mdelay(1); 2224 if (!(isp1362_read_reg32(isp1362_hcd, HCCMDSTAT) & OHCI_HCR)) 2225 break; 2226 } 2227 if (!tmp) 2228 pr_err("Software reset timeout\n"); 2229 } 2230 2231 static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) 2232 { 2233 unsigned long flags; 2234 2235 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2236 __isp1362_sw_reset(isp1362_hcd); 2237 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2238 } 2239 2240 static int isp1362_mem_config(struct usb_hcd *hcd) 2241 { 2242 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2243 unsigned long flags; 2244 u32 total; 2245 u16 istl_size = ISP1362_ISTL_BUFSIZE; 2246 u16 intl_blksize = ISP1362_INTL_BLKSIZE + PTD_HEADER_SIZE; 2247 u16 intl_size = ISP1362_INTL_BUFFERS * intl_blksize; 2248 u16 atl_blksize = ISP1362_ATL_BLKSIZE + PTD_HEADER_SIZE; 2249 u16 atl_buffers = (ISP1362_BUF_SIZE - (istl_size + intl_size)) / atl_blksize; 2250 u16 atl_size; 2251 int i; 2252 2253 WARN_ON(istl_size & 3); 2254 WARN_ON(atl_blksize & 3); 2255 WARN_ON(intl_blksize & 3); 2256 WARN_ON(atl_blksize < PTD_HEADER_SIZE); 2257 WARN_ON(intl_blksize < PTD_HEADER_SIZE); 2258 2259 BUG_ON((unsigned)ISP1362_INTL_BUFFERS > 32); 2260 if (atl_buffers > 32) 2261 atl_buffers = 32; 2262 atl_size = atl_buffers * atl_blksize; 2263 total = atl_size + intl_size + istl_size; 2264 dev_info(hcd->self.controller, "ISP1362 Memory usage:\n"); 2265 dev_info(hcd->self.controller, " ISTL: 2 * %4d: %4d @ $%04x:$%04x\n", 2266 istl_size / 2, istl_size, 0, istl_size / 2); 2267 dev_info(hcd->self.controller, " INTL: %4d * (%3zu+8): %4d @ $%04x\n", 2268 ISP1362_INTL_BUFFERS, intl_blksize - PTD_HEADER_SIZE, 2269 intl_size, istl_size); 2270 dev_info(hcd->self.controller, " ATL : %4d * (%3zu+8): %4d @ $%04x\n", 2271 atl_buffers, atl_blksize - PTD_HEADER_SIZE, 2272 atl_size, istl_size + intl_size); 2273 dev_info(hcd->self.controller, " USED/FREE: %4d %4d\n", total, 2274 ISP1362_BUF_SIZE - total); 2275 2276 if (total > ISP1362_BUF_SIZE) { 2277 dev_err(hcd->self.controller, "%s: Memory requested: %d, available %d\n", 2278 __func__, total, ISP1362_BUF_SIZE); 2279 return -ENOMEM; 2280 } 2281 2282 total = istl_size + intl_size + atl_size; 2283 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2284 2285 for (i = 0; i < 2; i++) { 2286 isp1362_hcd->istl_queue[i].buf_start = i * istl_size / 2, 2287 isp1362_hcd->istl_queue[i].buf_size = istl_size / 2; 2288 isp1362_hcd->istl_queue[i].blk_size = 4; 2289 INIT_LIST_HEAD(&isp1362_hcd->istl_queue[i].active); 2290 snprintf(isp1362_hcd->istl_queue[i].name, 2291 sizeof(isp1362_hcd->istl_queue[i].name), "ISTL%d", i); 2292 DBG(3, "%s: %5s buf $%04x %d\n", __func__, 2293 isp1362_hcd->istl_queue[i].name, 2294 isp1362_hcd->istl_queue[i].buf_start, 2295 isp1362_hcd->istl_queue[i].buf_size); 2296 } 2297 isp1362_write_reg16(isp1362_hcd, HCISTLBUFSZ, istl_size / 2); 2298 2299 isp1362_hcd->intl_queue.buf_start = istl_size; 2300 isp1362_hcd->intl_queue.buf_size = intl_size; 2301 isp1362_hcd->intl_queue.buf_count = ISP1362_INTL_BUFFERS; 2302 isp1362_hcd->intl_queue.blk_size = intl_blksize; 2303 isp1362_hcd->intl_queue.buf_avail = isp1362_hcd->intl_queue.buf_count; 2304 isp1362_hcd->intl_queue.skip_map = ~0; 2305 INIT_LIST_HEAD(&isp1362_hcd->intl_queue.active); 2306 2307 isp1362_write_reg16(isp1362_hcd, HCINTLBUFSZ, 2308 isp1362_hcd->intl_queue.buf_size); 2309 isp1362_write_reg16(isp1362_hcd, HCINTLBLKSZ, 2310 isp1362_hcd->intl_queue.blk_size - PTD_HEADER_SIZE); 2311 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); 2312 isp1362_write_reg32(isp1362_hcd, HCINTLLAST, 2313 1 << (ISP1362_INTL_BUFFERS - 1)); 2314 2315 isp1362_hcd->atl_queue.buf_start = istl_size + intl_size; 2316 isp1362_hcd->atl_queue.buf_size = atl_size; 2317 isp1362_hcd->atl_queue.buf_count = atl_buffers; 2318 isp1362_hcd->atl_queue.blk_size = atl_blksize; 2319 isp1362_hcd->atl_queue.buf_avail = isp1362_hcd->atl_queue.buf_count; 2320 isp1362_hcd->atl_queue.skip_map = ~0; 2321 INIT_LIST_HEAD(&isp1362_hcd->atl_queue.active); 2322 2323 isp1362_write_reg16(isp1362_hcd, HCATLBUFSZ, 2324 isp1362_hcd->atl_queue.buf_size); 2325 isp1362_write_reg16(isp1362_hcd, HCATLBLKSZ, 2326 isp1362_hcd->atl_queue.blk_size - PTD_HEADER_SIZE); 2327 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); 2328 isp1362_write_reg32(isp1362_hcd, HCATLLAST, 2329 1 << (atl_buffers - 1)); 2330 2331 snprintf(isp1362_hcd->atl_queue.name, 2332 sizeof(isp1362_hcd->atl_queue.name), "ATL"); 2333 snprintf(isp1362_hcd->intl_queue.name, 2334 sizeof(isp1362_hcd->intl_queue.name), "INTL"); 2335 DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, 2336 isp1362_hcd->intl_queue.name, 2337 isp1362_hcd->intl_queue.buf_start, 2338 ISP1362_INTL_BUFFERS, isp1362_hcd->intl_queue.blk_size, 2339 isp1362_hcd->intl_queue.buf_size); 2340 DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, 2341 isp1362_hcd->atl_queue.name, 2342 isp1362_hcd->atl_queue.buf_start, 2343 atl_buffers, isp1362_hcd->atl_queue.blk_size, 2344 isp1362_hcd->atl_queue.buf_size); 2345 2346 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2347 2348 return 0; 2349 } 2350 2351 static int isp1362_hc_reset(struct usb_hcd *hcd) 2352 { 2353 int ret = 0; 2354 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2355 unsigned long t; 2356 unsigned long timeout = 100; 2357 unsigned long flags; 2358 int clkrdy = 0; 2359 2360 pr_debug("%s:\n", __func__); 2361 2362 if (isp1362_hcd->board && isp1362_hcd->board->reset) { 2363 isp1362_hcd->board->reset(hcd->self.controller, 1); 2364 msleep(20); 2365 if (isp1362_hcd->board->clock) 2366 isp1362_hcd->board->clock(hcd->self.controller, 1); 2367 isp1362_hcd->board->reset(hcd->self.controller, 0); 2368 } else 2369 isp1362_sw_reset(isp1362_hcd); 2370 2371 /* chip has been reset. First we need to see a clock */ 2372 t = jiffies + msecs_to_jiffies(timeout); 2373 while (!clkrdy && time_before_eq(jiffies, t)) { 2374 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2375 clkrdy = isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_CLKRDY; 2376 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2377 if (!clkrdy) 2378 msleep(4); 2379 } 2380 2381 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2382 isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_CLKRDY); 2383 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2384 if (!clkrdy) { 2385 pr_err("Clock not ready after %lums\n", timeout); 2386 ret = -ENODEV; 2387 } 2388 return ret; 2389 } 2390 2391 static void isp1362_hc_stop(struct usb_hcd *hcd) 2392 { 2393 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2394 unsigned long flags; 2395 u32 tmp; 2396 2397 pr_debug("%s:\n", __func__); 2398 2399 del_timer_sync(&hcd->rh_timer); 2400 2401 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2402 2403 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 2404 2405 /* Switch off power for all ports */ 2406 tmp = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); 2407 tmp &= ~(RH_A_NPS | RH_A_PSM); 2408 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, tmp); 2409 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); 2410 2411 /* Reset the chip */ 2412 if (isp1362_hcd->board && isp1362_hcd->board->reset) 2413 isp1362_hcd->board->reset(hcd->self.controller, 1); 2414 else 2415 __isp1362_sw_reset(isp1362_hcd); 2416 2417 if (isp1362_hcd->board && isp1362_hcd->board->clock) 2418 isp1362_hcd->board->clock(hcd->self.controller, 0); 2419 2420 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2421 } 2422 2423 #ifdef CHIP_BUFFER_TEST 2424 static int isp1362_chip_test(struct isp1362_hcd *isp1362_hcd) 2425 { 2426 int ret = 0; 2427 u16 *ref; 2428 unsigned long flags; 2429 2430 ref = kmalloc(2 * ISP1362_BUF_SIZE, GFP_KERNEL); 2431 if (ref) { 2432 int offset; 2433 u16 *tst = &ref[ISP1362_BUF_SIZE / 2]; 2434 2435 for (offset = 0; offset < ISP1362_BUF_SIZE / 2; offset++) { 2436 ref[offset] = ~offset; 2437 tst[offset] = offset; 2438 } 2439 2440 for (offset = 0; offset < 4; offset++) { 2441 int j; 2442 2443 for (j = 0; j < 8; j++) { 2444 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2445 isp1362_write_buffer(isp1362_hcd, (u8 *)ref + offset, 0, j); 2446 isp1362_read_buffer(isp1362_hcd, (u8 *)tst + offset, 0, j); 2447 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2448 2449 if (memcmp(ref, tst, j)) { 2450 ret = -ENODEV; 2451 pr_err("%s: memory check with %d byte offset %d failed\n", 2452 __func__, j, offset); 2453 dump_data((u8 *)ref + offset, j); 2454 dump_data((u8 *)tst + offset, j); 2455 } 2456 } 2457 } 2458 2459 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2460 isp1362_write_buffer(isp1362_hcd, ref, 0, ISP1362_BUF_SIZE); 2461 isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2462 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2463 2464 if (memcmp(ref, tst, ISP1362_BUF_SIZE)) { 2465 ret = -ENODEV; 2466 pr_err("%s: memory check failed\n", __func__); 2467 dump_data((u8 *)tst, ISP1362_BUF_SIZE / 2); 2468 } 2469 2470 for (offset = 0; offset < 256; offset++) { 2471 int test_size = 0; 2472 2473 yield(); 2474 2475 memset(tst, 0, ISP1362_BUF_SIZE); 2476 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2477 isp1362_write_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2478 isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2479 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2480 if (memcmp(tst, tst + (ISP1362_BUF_SIZE / (2 * sizeof(*tst))), 2481 ISP1362_BUF_SIZE / 2)) { 2482 pr_err("%s: Failed to clear buffer\n", __func__); 2483 dump_data((u8 *)tst, ISP1362_BUF_SIZE); 2484 break; 2485 } 2486 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2487 isp1362_write_buffer(isp1362_hcd, ref, offset * 2, PTD_HEADER_SIZE); 2488 isp1362_write_buffer(isp1362_hcd, ref + PTD_HEADER_SIZE / sizeof(*ref), 2489 offset * 2 + PTD_HEADER_SIZE, test_size); 2490 isp1362_read_buffer(isp1362_hcd, tst, offset * 2, 2491 PTD_HEADER_SIZE + test_size); 2492 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2493 if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { 2494 dump_data(((u8 *)ref) + offset, PTD_HEADER_SIZE + test_size); 2495 dump_data((u8 *)tst, PTD_HEADER_SIZE + test_size); 2496 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2497 isp1362_read_buffer(isp1362_hcd, tst, offset * 2, 2498 PTD_HEADER_SIZE + test_size); 2499 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2500 if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { 2501 ret = -ENODEV; 2502 pr_err("%s: memory check with offset %02x failed\n", 2503 __func__, offset); 2504 break; 2505 } 2506 pr_warning("%s: memory check with offset %02x ok after second read\n", 2507 __func__, offset); 2508 } 2509 } 2510 kfree(ref); 2511 } 2512 return ret; 2513 } 2514 #endif 2515 2516 static int isp1362_hc_start(struct usb_hcd *hcd) 2517 { 2518 int ret; 2519 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2520 struct isp1362_platform_data *board = isp1362_hcd->board; 2521 u16 hwcfg; 2522 u16 chipid; 2523 unsigned long flags; 2524 2525 pr_debug("%s:\n", __func__); 2526 2527 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2528 chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID); 2529 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2530 2531 if ((chipid & HCCHIPID_MASK) != HCCHIPID_MAGIC) { 2532 pr_err("%s: Invalid chip ID %04x\n", __func__, chipid); 2533 return -ENODEV; 2534 } 2535 2536 #ifdef CHIP_BUFFER_TEST 2537 ret = isp1362_chip_test(isp1362_hcd); 2538 if (ret) 2539 return -ENODEV; 2540 #endif 2541 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2542 /* clear interrupt status and disable all interrupt sources */ 2543 isp1362_write_reg16(isp1362_hcd, HCuPINT, 0xff); 2544 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 2545 2546 /* HW conf */ 2547 hwcfg = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); 2548 if (board->sel15Kres) 2549 hwcfg |= HCHWCFG_PULLDOWN_DS2 | 2550 ((MAX_ROOT_PORTS > 1) ? HCHWCFG_PULLDOWN_DS1 : 0); 2551 if (board->clknotstop) 2552 hwcfg |= HCHWCFG_CLKNOTSTOP; 2553 if (board->oc_enable) 2554 hwcfg |= HCHWCFG_ANALOG_OC; 2555 if (board->int_act_high) 2556 hwcfg |= HCHWCFG_INT_POL; 2557 if (board->int_edge_triggered) 2558 hwcfg |= HCHWCFG_INT_TRIGGER; 2559 if (board->dreq_act_high) 2560 hwcfg |= HCHWCFG_DREQ_POL; 2561 if (board->dack_act_high) 2562 hwcfg |= HCHWCFG_DACK_POL; 2563 isp1362_write_reg16(isp1362_hcd, HCHWCFG, hwcfg); 2564 isp1362_show_reg(isp1362_hcd, HCHWCFG); 2565 isp1362_write_reg16(isp1362_hcd, HCDMACFG, 0); 2566 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2567 2568 ret = isp1362_mem_config(hcd); 2569 if (ret) 2570 return ret; 2571 2572 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2573 2574 /* Root hub conf */ 2575 isp1362_hcd->rhdesca = 0; 2576 if (board->no_power_switching) 2577 isp1362_hcd->rhdesca |= RH_A_NPS; 2578 if (board->power_switching_mode) 2579 isp1362_hcd->rhdesca |= RH_A_PSM; 2580 if (board->potpg) 2581 isp1362_hcd->rhdesca |= (board->potpg << 24) & RH_A_POTPGT; 2582 else 2583 isp1362_hcd->rhdesca |= (25 << 24) & RH_A_POTPGT; 2584 2585 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca & ~RH_A_OCPM); 2586 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca | RH_A_OCPM); 2587 isp1362_hcd->rhdesca = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); 2588 2589 isp1362_hcd->rhdescb = RH_B_PPCM; 2590 isp1362_write_reg32(isp1362_hcd, HCRHDESCB, isp1362_hcd->rhdescb); 2591 isp1362_hcd->rhdescb = isp1362_read_reg32(isp1362_hcd, HCRHDESCB); 2592 2593 isp1362_read_reg32(isp1362_hcd, HCFMINTVL); 2594 isp1362_write_reg32(isp1362_hcd, HCFMINTVL, (FSMP(FI) << 16) | FI); 2595 isp1362_write_reg32(isp1362_hcd, HCLSTHRESH, LSTHRESH); 2596 2597 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2598 2599 isp1362_hcd->hc_control = OHCI_USB_OPER; 2600 hcd->state = HC_STATE_RUNNING; 2601 2602 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2603 /* Set up interrupts */ 2604 isp1362_hcd->intenb = OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE; 2605 isp1362_hcd->intenb |= OHCI_INTR_RD; 2606 isp1362_hcd->irqenb = HCuPINT_OPR | HCuPINT_SUSP; 2607 isp1362_write_reg32(isp1362_hcd, HCINTENB, isp1362_hcd->intenb); 2608 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 2609 2610 /* Go operational */ 2611 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 2612 /* enable global power */ 2613 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC | RH_HS_DRWE); 2614 2615 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2616 2617 return 0; 2618 } 2619 2620 /*-------------------------------------------------------------------------*/ 2621 2622 static struct hc_driver isp1362_hc_driver = { 2623 .description = hcd_name, 2624 .product_desc = "ISP1362 Host Controller", 2625 .hcd_priv_size = sizeof(struct isp1362_hcd), 2626 2627 .irq = isp1362_irq, 2628 .flags = HCD_USB11 | HCD_MEMORY, 2629 2630 .reset = isp1362_hc_reset, 2631 .start = isp1362_hc_start, 2632 .stop = isp1362_hc_stop, 2633 2634 .urb_enqueue = isp1362_urb_enqueue, 2635 .urb_dequeue = isp1362_urb_dequeue, 2636 .endpoint_disable = isp1362_endpoint_disable, 2637 2638 .get_frame_number = isp1362_get_frame, 2639 2640 .hub_status_data = isp1362_hub_status_data, 2641 .hub_control = isp1362_hub_control, 2642 .bus_suspend = isp1362_bus_suspend, 2643 .bus_resume = isp1362_bus_resume, 2644 }; 2645 2646 /*-------------------------------------------------------------------------*/ 2647 2648 static int __devexit isp1362_remove(struct platform_device *pdev) 2649 { 2650 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2651 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2652 struct resource *res; 2653 2654 remove_debug_file(isp1362_hcd); 2655 DBG(0, "%s: Removing HCD\n", __func__); 2656 usb_remove_hcd(hcd); 2657 2658 DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, 2659 isp1362_hcd->data_reg); 2660 iounmap(isp1362_hcd->data_reg); 2661 2662 DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, 2663 isp1362_hcd->addr_reg); 2664 iounmap(isp1362_hcd->addr_reg); 2665 2666 res = platform_get_resource(pdev, IORESOURCE_MEM, 1); 2667 DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start); 2668 if (res) 2669 release_mem_region(res->start, resource_size(res)); 2670 2671 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2672 DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start); 2673 if (res) 2674 release_mem_region(res->start, resource_size(res)); 2675 2676 DBG(0, "%s: put_hcd\n", __func__); 2677 usb_put_hcd(hcd); 2678 DBG(0, "%s: Done\n", __func__); 2679 2680 return 0; 2681 } 2682 2683 static int __devinit isp1362_probe(struct platform_device *pdev) 2684 { 2685 struct usb_hcd *hcd; 2686 struct isp1362_hcd *isp1362_hcd; 2687 struct resource *addr, *data; 2688 void __iomem *addr_reg; 2689 void __iomem *data_reg; 2690 int irq; 2691 int retval = 0; 2692 struct resource *irq_res; 2693 unsigned int irq_flags = 0; 2694 2695 if (usb_disabled()) 2696 return -ENODEV; 2697 2698 /* basic sanity checks first. board-specific init logic should 2699 * have initialized this the three resources and probably board 2700 * specific platform_data. we don't probe for IRQs, and do only 2701 * minimal sanity checking. 2702 */ 2703 if (pdev->num_resources < 3) { 2704 retval = -ENODEV; 2705 goto err1; 2706 } 2707 2708 data = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2709 addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); 2710 irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2711 if (!addr || !data || !irq_res) { 2712 retval = -ENODEV; 2713 goto err1; 2714 } 2715 irq = irq_res->start; 2716 2717 if (pdev->dev.dma_mask) { 2718 DBG(1, "won't do DMA"); 2719 retval = -ENODEV; 2720 goto err1; 2721 } 2722 2723 if (!request_mem_region(addr->start, resource_size(addr), hcd_name)) { 2724 retval = -EBUSY; 2725 goto err1; 2726 } 2727 addr_reg = ioremap(addr->start, resource_size(addr)); 2728 if (addr_reg == NULL) { 2729 retval = -ENOMEM; 2730 goto err2; 2731 } 2732 2733 if (!request_mem_region(data->start, resource_size(data), hcd_name)) { 2734 retval = -EBUSY; 2735 goto err3; 2736 } 2737 data_reg = ioremap(data->start, resource_size(data)); 2738 if (data_reg == NULL) { 2739 retval = -ENOMEM; 2740 goto err4; 2741 } 2742 2743 /* allocate and initialize hcd */ 2744 hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev)); 2745 if (!hcd) { 2746 retval = -ENOMEM; 2747 goto err5; 2748 } 2749 hcd->rsrc_start = data->start; 2750 isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2751 isp1362_hcd->data_reg = data_reg; 2752 isp1362_hcd->addr_reg = addr_reg; 2753 2754 isp1362_hcd->next_statechange = jiffies; 2755 spin_lock_init(&isp1362_hcd->lock); 2756 INIT_LIST_HEAD(&isp1362_hcd->async); 2757 INIT_LIST_HEAD(&isp1362_hcd->periodic); 2758 INIT_LIST_HEAD(&isp1362_hcd->isoc); 2759 INIT_LIST_HEAD(&isp1362_hcd->remove_list); 2760 isp1362_hcd->board = pdev->dev.platform_data; 2761 #if USE_PLATFORM_DELAY 2762 if (!isp1362_hcd->board->delay) { 2763 dev_err(hcd->self.controller, "No platform delay function given\n"); 2764 retval = -ENODEV; 2765 goto err6; 2766 } 2767 #endif 2768 2769 if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE) 2770 irq_flags |= IRQF_TRIGGER_RISING; 2771 if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE) 2772 irq_flags |= IRQF_TRIGGER_FALLING; 2773 if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL) 2774 irq_flags |= IRQF_TRIGGER_HIGH; 2775 if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL) 2776 irq_flags |= IRQF_TRIGGER_LOW; 2777 2778 retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_SHARED); 2779 if (retval != 0) 2780 goto err6; 2781 pr_info("%s, irq %d\n", hcd->product_desc, irq); 2782 2783 create_debug_file(isp1362_hcd); 2784 2785 return 0; 2786 2787 err6: 2788 DBG(0, "%s: Freeing dev %p\n", __func__, isp1362_hcd); 2789 usb_put_hcd(hcd); 2790 err5: 2791 DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, data_reg); 2792 iounmap(data_reg); 2793 err4: 2794 DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)data->start); 2795 release_mem_region(data->start, resource_size(data)); 2796 err3: 2797 DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, addr_reg); 2798 iounmap(addr_reg); 2799 err2: 2800 DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)addr->start); 2801 release_mem_region(addr->start, resource_size(addr)); 2802 err1: 2803 pr_err("%s: init error, %d\n", __func__, retval); 2804 2805 return retval; 2806 } 2807 2808 #ifdef CONFIG_PM 2809 static int isp1362_suspend(struct platform_device *pdev, pm_message_t state) 2810 { 2811 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2812 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2813 unsigned long flags; 2814 int retval = 0; 2815 2816 DBG(0, "%s: Suspending device\n", __func__); 2817 2818 if (state.event == PM_EVENT_FREEZE) { 2819 DBG(0, "%s: Suspending root hub\n", __func__); 2820 retval = isp1362_bus_suspend(hcd); 2821 } else { 2822 DBG(0, "%s: Suspending RH ports\n", __func__); 2823 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2824 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); 2825 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2826 } 2827 if (retval == 0) 2828 pdev->dev.power.power_state = state; 2829 return retval; 2830 } 2831 2832 static int isp1362_resume(struct platform_device *pdev) 2833 { 2834 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2835 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2836 unsigned long flags; 2837 2838 DBG(0, "%s: Resuming\n", __func__); 2839 2840 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) { 2841 DBG(0, "%s: Resume RH ports\n", __func__); 2842 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2843 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC); 2844 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2845 return 0; 2846 } 2847 2848 pdev->dev.power.power_state = PMSG_ON; 2849 2850 return isp1362_bus_resume(isp1362_hcd_to_hcd(isp1362_hcd)); 2851 } 2852 #else 2853 #define isp1362_suspend NULL 2854 #define isp1362_resume NULL 2855 #endif 2856 2857 static struct platform_driver isp1362_driver = { 2858 .probe = isp1362_probe, 2859 .remove = __devexit_p(isp1362_remove), 2860 2861 .suspend = isp1362_suspend, 2862 .resume = isp1362_resume, 2863 .driver = { 2864 .name = (char *)hcd_name, 2865 .owner = THIS_MODULE, 2866 }, 2867 }; 2868 2869 module_platform_driver(isp1362_driver); 2870