1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * ISP1362 HCD (Host Controller Driver) for USB. 4 * 5 * Copyright (C) 2005 Lothar Wassmann <LW@KARO-electronics.de> 6 * 7 * Derived from the SL811 HCD, rewritten for ISP116x. 8 * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee> 9 * 10 * Portions: 11 * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) 12 * Copyright (C) 2004 David Brownell 13 */ 14 15 /* 16 * The ISP1362 chip requires a large delay (300ns and 462ns) between 17 * accesses to the address and data register. 18 * The following timing options exist: 19 * 20 * 1. Configure your memory controller to add such delays if it can (the best) 21 * 2. Implement platform-specific delay function possibly 22 * combined with configuring the memory controller; see 23 * include/linux/usb_isp1362.h for more info. 24 * 3. Use ndelay (easiest, poorest). 25 * 26 * Use the corresponding macros USE_PLATFORM_DELAY and USE_NDELAY in the 27 * platform specific section of isp1362.h to select the appropriate variant. 28 * 29 * Also note that according to the Philips "ISP1362 Errata" document 30 * Rev 1.00 from 27 May data corruption may occur when the #WR signal 31 * is reasserted (even with #CS deasserted) within 132ns after a 32 * write cycle to any controller register. If the hardware doesn't 33 * implement the recommended fix (gating the #WR with #CS) software 34 * must ensure that no further write cycle (not necessarily to the chip!) 35 * is issued by the CPU within this interval. 36 37 * For PXA25x this can be ensured by using VLIO with the maximum 38 * recovery time (MSCx = 0x7f8c) with a memory clock of 99.53 MHz. 39 */ 40 41 #undef ISP1362_DEBUG 42 43 /* 44 * The PXA255 UDC apparently doesn't handle GET_STATUS, GET_CONFIG and 45 * GET_INTERFACE requests correctly when the SETUP and DATA stages of the 46 * requests are carried out in separate frames. This will delay any SETUP 47 * packets until the start of the next frame so that this situation is 48 * unlikely to occur (and makes usbtest happy running with a PXA255 target 49 * device). 50 */ 51 #undef BUGGY_PXA2XX_UDC_USBTEST 52 53 #undef PTD_TRACE 54 #undef URB_TRACE 55 #undef VERBOSE 56 #undef REGISTERS 57 58 /* This enables a memory test on the ISP1362 chip memory to make sure the 59 * chip access timing is correct. 60 */ 61 #undef CHIP_BUFFER_TEST 62 63 #include <linux/module.h> 64 #include <linux/moduleparam.h> 65 #include <linux/kernel.h> 66 #include <linux/delay.h> 67 #include <linux/ioport.h> 68 #include <linux/sched.h> 69 #include <linux/slab.h> 70 #include <linux/errno.h> 71 #include <linux/list.h> 72 #include <linux/interrupt.h> 73 #include <linux/usb.h> 74 #include <linux/usb/isp1362.h> 75 #include <linux/usb/hcd.h> 76 #include <linux/platform_device.h> 77 #include <linux/pm.h> 78 #include <linux/io.h> 79 #include <linux/bitmap.h> 80 #include <linux/prefetch.h> 81 #include <linux/debugfs.h> 82 #include <linux/seq_file.h> 83 84 #include <asm/irq.h> 85 #include <asm/byteorder.h> 86 #include <asm/unaligned.h> 87 88 static int dbg_level; 89 #ifdef ISP1362_DEBUG 90 module_param(dbg_level, int, 0644); 91 #else 92 module_param(dbg_level, int, 0); 93 #endif 94 95 #include "../core/usb.h" 96 #include "isp1362.h" 97 98 99 #define DRIVER_VERSION "2005-04-04" 100 #define DRIVER_DESC "ISP1362 USB Host Controller Driver" 101 102 MODULE_DESCRIPTION(DRIVER_DESC); 103 MODULE_LICENSE("GPL"); 104 105 static const char hcd_name[] = "isp1362-hcd"; 106 107 static void isp1362_hc_stop(struct usb_hcd *hcd); 108 static int isp1362_hc_start(struct usb_hcd *hcd); 109 110 /*-------------------------------------------------------------------------*/ 111 112 /* 113 * When called from the interrupthandler only isp1362_hcd->irqenb is modified, 114 * since the interrupt handler will write isp1362_hcd->irqenb to HCuPINT upon 115 * completion. 116 * We don't need a 'disable' counterpart, since interrupts will be disabled 117 * only by the interrupt handler. 118 */ 119 static inline void isp1362_enable_int(struct isp1362_hcd *isp1362_hcd, u16 mask) 120 { 121 if ((isp1362_hcd->irqenb | mask) == isp1362_hcd->irqenb) 122 return; 123 if (mask & ~isp1362_hcd->irqenb) 124 isp1362_write_reg16(isp1362_hcd, HCuPINT, mask & ~isp1362_hcd->irqenb); 125 isp1362_hcd->irqenb |= mask; 126 if (isp1362_hcd->irq_active) 127 return; 128 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 129 } 130 131 /*-------------------------------------------------------------------------*/ 132 133 static inline struct isp1362_ep_queue *get_ptd_queue(struct isp1362_hcd *isp1362_hcd, 134 u16 offset) 135 { 136 struct isp1362_ep_queue *epq = NULL; 137 138 if (offset < isp1362_hcd->istl_queue[1].buf_start) 139 epq = &isp1362_hcd->istl_queue[0]; 140 else if (offset < isp1362_hcd->intl_queue.buf_start) 141 epq = &isp1362_hcd->istl_queue[1]; 142 else if (offset < isp1362_hcd->atl_queue.buf_start) 143 epq = &isp1362_hcd->intl_queue; 144 else if (offset < isp1362_hcd->atl_queue.buf_start + 145 isp1362_hcd->atl_queue.buf_size) 146 epq = &isp1362_hcd->atl_queue; 147 148 if (epq) 149 DBG(1, "%s: PTD $%04x is on %s queue\n", __func__, offset, epq->name); 150 else 151 pr_warn("%s: invalid PTD $%04x\n", __func__, offset); 152 153 return epq; 154 } 155 156 static inline int get_ptd_offset(struct isp1362_ep_queue *epq, u8 index) 157 { 158 int offset; 159 160 if (index * epq->blk_size > epq->buf_size) { 161 pr_warn("%s: Bad %s index %d(%d)\n", 162 __func__, epq->name, index, 163 epq->buf_size / epq->blk_size); 164 return -EINVAL; 165 } 166 offset = epq->buf_start + index * epq->blk_size; 167 DBG(3, "%s: %s PTD[%02x] # %04x\n", __func__, epq->name, index, offset); 168 169 return offset; 170 } 171 172 /*-------------------------------------------------------------------------*/ 173 174 static inline u16 max_transfer_size(struct isp1362_ep_queue *epq, size_t size, 175 int mps) 176 { 177 u16 xfer_size = min_t(size_t, MAX_XFER_SIZE, size); 178 179 xfer_size = min_t(size_t, xfer_size, epq->buf_avail * epq->blk_size - PTD_HEADER_SIZE); 180 if (xfer_size < size && xfer_size % mps) 181 xfer_size -= xfer_size % mps; 182 183 return xfer_size; 184 } 185 186 static int claim_ptd_buffers(struct isp1362_ep_queue *epq, 187 struct isp1362_ep *ep, u16 len) 188 { 189 int ptd_offset = -EINVAL; 190 int num_ptds = ((len + PTD_HEADER_SIZE - 1) / epq->blk_size) + 1; 191 int found; 192 193 BUG_ON(len > epq->buf_size); 194 195 if (!epq->buf_avail) 196 return -ENOMEM; 197 198 if (ep->num_ptds) 199 pr_err("%s: %s len %d/%d num_ptds %d buf_map %08lx skip_map %08lx\n", __func__, 200 epq->name, len, epq->blk_size, num_ptds, epq->buf_map, epq->skip_map); 201 BUG_ON(ep->num_ptds != 0); 202 203 found = bitmap_find_next_zero_area(&epq->buf_map, epq->buf_count, 0, 204 num_ptds, 0); 205 if (found >= epq->buf_count) 206 return -EOVERFLOW; 207 208 DBG(1, "%s: Found %d PTDs[%d] for %d/%d byte\n", __func__, 209 num_ptds, found, len, (int)(epq->blk_size - PTD_HEADER_SIZE)); 210 ptd_offset = get_ptd_offset(epq, found); 211 WARN_ON(ptd_offset < 0); 212 ep->ptd_offset = ptd_offset; 213 ep->num_ptds += num_ptds; 214 epq->buf_avail -= num_ptds; 215 BUG_ON(epq->buf_avail > epq->buf_count); 216 ep->ptd_index = found; 217 bitmap_set(&epq->buf_map, found, num_ptds); 218 DBG(1, "%s: Done %s PTD[%d] $%04x, avail %d count %d claimed %d %08lx:%08lx\n", 219 __func__, epq->name, ep->ptd_index, ep->ptd_offset, 220 epq->buf_avail, epq->buf_count, num_ptds, epq->buf_map, epq->skip_map); 221 222 return found; 223 } 224 225 static inline void release_ptd_buffers(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) 226 { 227 int last = ep->ptd_index + ep->num_ptds; 228 229 if (last > epq->buf_count) 230 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", 231 __func__, ep, ep->num_req, ep->length, epq->name, ep->ptd_index, 232 ep->ptd_offset, ep->num_ptds, epq->buf_count, epq->buf_avail, 233 epq->buf_map, epq->skip_map); 234 BUG_ON(last > epq->buf_count); 235 236 bitmap_clear(&epq->buf_map, ep->ptd_index, ep->num_ptds); 237 bitmap_set(&epq->skip_map, ep->ptd_index, ep->num_ptds); 238 epq->buf_avail += ep->num_ptds; 239 epq->ptd_count--; 240 241 BUG_ON(epq->buf_avail > epq->buf_count); 242 BUG_ON(epq->ptd_count > epq->buf_count); 243 244 DBG(1, "%s: Done %s PTDs $%04x released %d avail %d count %d\n", 245 __func__, epq->name, 246 ep->ptd_offset, ep->num_ptds, epq->buf_avail, epq->buf_count); 247 DBG(1, "%s: buf_map %08lx skip_map %08lx\n", __func__, 248 epq->buf_map, epq->skip_map); 249 250 ep->num_ptds = 0; 251 ep->ptd_offset = -EINVAL; 252 ep->ptd_index = -EINVAL; 253 } 254 255 /*-------------------------------------------------------------------------*/ 256 257 /* 258 Set up PTD's. 259 */ 260 static void prepare_ptd(struct isp1362_hcd *isp1362_hcd, struct urb *urb, 261 struct isp1362_ep *ep, struct isp1362_ep_queue *epq, 262 u16 fno) 263 { 264 struct ptd *ptd; 265 int toggle; 266 int dir; 267 u16 len; 268 size_t buf_len = urb->transfer_buffer_length - urb->actual_length; 269 270 DBG(3, "%s: %s ep %p\n", __func__, epq->name, ep); 271 272 ptd = &ep->ptd; 273 274 ep->data = (unsigned char *)urb->transfer_buffer + urb->actual_length; 275 276 switch (ep->nextpid) { 277 case USB_PID_IN: 278 toggle = usb_gettoggle(urb->dev, ep->epnum, 0); 279 dir = PTD_DIR_IN; 280 if (usb_pipecontrol(urb->pipe)) { 281 len = min_t(size_t, ep->maxpacket, buf_len); 282 } else if (usb_pipeisoc(urb->pipe)) { 283 len = min_t(size_t, urb->iso_frame_desc[fno].length, MAX_XFER_SIZE); 284 ep->data = urb->transfer_buffer + urb->iso_frame_desc[fno].offset; 285 } else 286 len = max_transfer_size(epq, buf_len, ep->maxpacket); 287 DBG(1, "%s: IN len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, 288 (int)buf_len); 289 break; 290 case USB_PID_OUT: 291 toggle = usb_gettoggle(urb->dev, ep->epnum, 1); 292 dir = PTD_DIR_OUT; 293 if (usb_pipecontrol(urb->pipe)) 294 len = min_t(size_t, ep->maxpacket, buf_len); 295 else if (usb_pipeisoc(urb->pipe)) 296 len = min_t(size_t, urb->iso_frame_desc[0].length, MAX_XFER_SIZE); 297 else 298 len = max_transfer_size(epq, buf_len, ep->maxpacket); 299 if (len == 0) 300 pr_info("%s: Sending ZERO packet: %d\n", __func__, 301 urb->transfer_flags & URB_ZERO_PACKET); 302 DBG(1, "%s: OUT len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, 303 (int)buf_len); 304 break; 305 case USB_PID_SETUP: 306 toggle = 0; 307 dir = PTD_DIR_SETUP; 308 len = sizeof(struct usb_ctrlrequest); 309 DBG(1, "%s: SETUP len %d\n", __func__, len); 310 ep->data = urb->setup_packet; 311 break; 312 case USB_PID_ACK: 313 toggle = 1; 314 len = 0; 315 dir = (urb->transfer_buffer_length && usb_pipein(urb->pipe)) ? 316 PTD_DIR_OUT : PTD_DIR_IN; 317 DBG(1, "%s: ACK len %d\n", __func__, len); 318 break; 319 default: 320 toggle = dir = len = 0; 321 pr_err("%s@%d: ep->nextpid %02x\n", __func__, __LINE__, ep->nextpid); 322 BUG_ON(1); 323 } 324 325 ep->length = len; 326 if (!len) 327 ep->data = NULL; 328 329 ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); 330 ptd->mps = PTD_MPS(ep->maxpacket) | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | 331 PTD_EP(ep->epnum); 332 ptd->len = PTD_LEN(len) | PTD_DIR(dir); 333 ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); 334 335 if (usb_pipeint(urb->pipe)) { 336 ptd->faddr |= PTD_SF_INT(ep->branch); 337 ptd->faddr |= PTD_PR(ep->interval ? __ffs(ep->interval) : 0); 338 } 339 if (usb_pipeisoc(urb->pipe)) 340 ptd->faddr |= PTD_SF_ISO(fno); 341 342 DBG(1, "%s: Finished\n", __func__); 343 } 344 345 static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 346 struct isp1362_ep_queue *epq) 347 { 348 struct ptd *ptd = &ep->ptd; 349 int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length; 350 351 prefetch(ptd); 352 isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); 353 if (len) 354 isp1362_write_buffer(isp1362_hcd, ep->data, 355 ep->ptd_offset + PTD_HEADER_SIZE, len); 356 357 dump_ptd(ptd); 358 dump_ptd_out_data(ptd, ep->data); 359 } 360 361 static void isp1362_read_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 362 struct isp1362_ep_queue *epq) 363 { 364 struct ptd *ptd = &ep->ptd; 365 int act_len; 366 367 WARN_ON(list_empty(&ep->active)); 368 BUG_ON(ep->ptd_offset < 0); 369 370 list_del_init(&ep->active); 371 DBG(1, "%s: ep %p removed from active list %p\n", __func__, ep, &epq->active); 372 373 prefetchw(ptd); 374 isp1362_read_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); 375 dump_ptd(ptd); 376 act_len = PTD_GET_COUNT(ptd); 377 if (PTD_GET_DIR(ptd) != PTD_DIR_IN || act_len == 0) 378 return; 379 if (act_len > ep->length) 380 pr_err("%s: ep %p PTD $%04x act_len %d ep->length %d\n", __func__, ep, 381 ep->ptd_offset, act_len, ep->length); 382 BUG_ON(act_len > ep->length); 383 /* Only transfer the amount of data that has actually been overwritten 384 * in the chip buffer. We don't want any data that doesn't belong to the 385 * transfer to leak out of the chip to the callers transfer buffer! 386 */ 387 prefetchw(ep->data); 388 isp1362_read_buffer(isp1362_hcd, ep->data, 389 ep->ptd_offset + PTD_HEADER_SIZE, act_len); 390 dump_ptd_in_data(ptd, ep->data); 391 } 392 393 /* 394 * INT PTDs will stay in the chip until data is available. 395 * This function will remove a PTD from the chip when the URB is dequeued. 396 * Must be called with the spinlock held and IRQs disabled 397 */ 398 static void remove_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) 399 400 { 401 int index; 402 struct isp1362_ep_queue *epq; 403 404 DBG(1, "%s: ep %p PTD[%d] $%04x\n", __func__, ep, ep->ptd_index, ep->ptd_offset); 405 BUG_ON(ep->ptd_offset < 0); 406 407 epq = get_ptd_queue(isp1362_hcd, ep->ptd_offset); 408 BUG_ON(!epq); 409 410 /* put ep in remove_list for cleanup */ 411 WARN_ON(!list_empty(&ep->remove_list)); 412 list_add_tail(&ep->remove_list, &isp1362_hcd->remove_list); 413 /* let SOF interrupt handle the cleanup */ 414 isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); 415 416 index = ep->ptd_index; 417 if (index < 0) 418 /* ISO queues don't have SKIP registers */ 419 return; 420 421 DBG(1, "%s: Disabling PTD[%02x] $%04x %08lx|%08x\n", __func__, 422 index, ep->ptd_offset, epq->skip_map, 1 << index); 423 424 /* prevent further processing of PTD (will be effective after next SOF) */ 425 epq->skip_map |= 1 << index; 426 if (epq == &isp1362_hcd->atl_queue) { 427 DBG(2, "%s: ATLSKIP = %08x -> %08lx\n", __func__, 428 isp1362_read_reg32(isp1362_hcd, HCATLSKIP), epq->skip_map); 429 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, epq->skip_map); 430 if (~epq->skip_map == 0) 431 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 432 } else if (epq == &isp1362_hcd->intl_queue) { 433 DBG(2, "%s: INTLSKIP = %08x -> %08lx\n", __func__, 434 isp1362_read_reg32(isp1362_hcd, HCINTLSKIP), epq->skip_map); 435 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, epq->skip_map); 436 if (~epq->skip_map == 0) 437 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 438 } 439 } 440 441 /* 442 Take done or failed requests out of schedule. Give back 443 processed urbs. 444 */ 445 static void finish_request(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, 446 struct urb *urb, int status) 447 __releases(isp1362_hcd->lock) 448 __acquires(isp1362_hcd->lock) 449 { 450 urb->hcpriv = NULL; 451 ep->error_count = 0; 452 453 if (usb_pipecontrol(urb->pipe)) 454 ep->nextpid = USB_PID_SETUP; 455 456 URB_DBG("%s: req %d FA %d ep%d%s %s: len %d/%d %s stat %d\n", __func__, 457 ep->num_req, usb_pipedevice(urb->pipe), 458 usb_pipeendpoint(urb->pipe), 459 !usb_pipein(urb->pipe) ? "out" : "in", 460 usb_pipecontrol(urb->pipe) ? "ctrl" : 461 usb_pipeint(urb->pipe) ? "int" : 462 usb_pipebulk(urb->pipe) ? "bulk" : 463 "iso", 464 urb->actual_length, urb->transfer_buffer_length, 465 !(urb->transfer_flags & URB_SHORT_NOT_OK) ? 466 "short_ok" : "", urb->status); 467 468 469 usb_hcd_unlink_urb_from_ep(isp1362_hcd_to_hcd(isp1362_hcd), urb); 470 spin_unlock(&isp1362_hcd->lock); 471 usb_hcd_giveback_urb(isp1362_hcd_to_hcd(isp1362_hcd), urb, status); 472 spin_lock(&isp1362_hcd->lock); 473 474 /* take idle endpoints out of the schedule right away */ 475 if (!list_empty(&ep->hep->urb_list)) 476 return; 477 478 /* async deschedule */ 479 if (!list_empty(&ep->schedule)) { 480 list_del_init(&ep->schedule); 481 return; 482 } 483 484 485 if (ep->interval) { 486 /* periodic deschedule */ 487 DBG(1, "deschedule qh%d/%p branch %d load %d bandwidth %d -> %d\n", ep->interval, 488 ep, ep->branch, ep->load, 489 isp1362_hcd->load[ep->branch], 490 isp1362_hcd->load[ep->branch] - ep->load); 491 isp1362_hcd->load[ep->branch] -= ep->load; 492 ep->branch = PERIODIC_SIZE; 493 } 494 } 495 496 /* 497 * Analyze transfer results, handle partial transfers and errors 498 */ 499 static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) 500 { 501 struct urb *urb = get_urb(ep); 502 struct usb_device *udev; 503 struct ptd *ptd; 504 int short_ok; 505 u16 len; 506 int urbstat = -EINPROGRESS; 507 u8 cc; 508 509 DBG(2, "%s: ep %p req %d\n", __func__, ep, ep->num_req); 510 511 udev = urb->dev; 512 ptd = &ep->ptd; 513 cc = PTD_GET_CC(ptd); 514 if (cc == PTD_NOTACCESSED) { 515 pr_err("%s: req %d PTD %p Untouched by ISP1362\n", __func__, 516 ep->num_req, ptd); 517 cc = PTD_DEVNOTRESP; 518 } 519 520 short_ok = !(urb->transfer_flags & URB_SHORT_NOT_OK); 521 len = urb->transfer_buffer_length - urb->actual_length; 522 523 /* Data underrun is special. For allowed underrun 524 we clear the error and continue as normal. For 525 forbidden underrun we finish the DATA stage 526 immediately while for control transfer, 527 we do a STATUS stage. 528 */ 529 if (cc == PTD_DATAUNDERRUN) { 530 if (short_ok) { 531 DBG(1, "%s: req %d Allowed data underrun short_%sok %d/%d/%d byte\n", 532 __func__, ep->num_req, short_ok ? "" : "not_", 533 PTD_GET_COUNT(ptd), ep->maxpacket, len); 534 cc = PTD_CC_NOERROR; 535 urbstat = 0; 536 } else { 537 DBG(1, "%s: req %d Data Underrun %s nextpid %02x short_%sok %d/%d/%d byte\n", 538 __func__, ep->num_req, 539 usb_pipein(urb->pipe) ? "IN" : "OUT", ep->nextpid, 540 short_ok ? "" : "not_", 541 PTD_GET_COUNT(ptd), ep->maxpacket, len); 542 /* save the data underrun error code for later and 543 * proceed with the status stage 544 */ 545 urb->actual_length += PTD_GET_COUNT(ptd); 546 if (usb_pipecontrol(urb->pipe)) { 547 ep->nextpid = USB_PID_ACK; 548 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 549 550 if (urb->status == -EINPROGRESS) 551 urb->status = cc_to_error[PTD_DATAUNDERRUN]; 552 } else { 553 usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT, 554 PTD_GET_TOGGLE(ptd)); 555 urbstat = cc_to_error[PTD_DATAUNDERRUN]; 556 } 557 goto out; 558 } 559 } 560 561 if (cc != PTD_CC_NOERROR) { 562 if (++ep->error_count >= 3 || cc == PTD_CC_STALL || cc == PTD_DATAOVERRUN) { 563 urbstat = cc_to_error[cc]; 564 DBG(1, "%s: req %d nextpid %02x, status %d, error %d, error_count %d\n", 565 __func__, ep->num_req, ep->nextpid, urbstat, cc, 566 ep->error_count); 567 } 568 goto out; 569 } 570 571 switch (ep->nextpid) { 572 case USB_PID_OUT: 573 if (PTD_GET_COUNT(ptd) != ep->length) 574 pr_err("%s: count=%d len=%d\n", __func__, 575 PTD_GET_COUNT(ptd), ep->length); 576 BUG_ON(PTD_GET_COUNT(ptd) != ep->length); 577 urb->actual_length += ep->length; 578 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 579 usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd)); 580 if (urb->actual_length == urb->transfer_buffer_length) { 581 DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, 582 ep->num_req, len, ep->maxpacket, urbstat); 583 if (usb_pipecontrol(urb->pipe)) { 584 DBG(3, "%s: req %d %s Wait for ACK\n", __func__, 585 ep->num_req, 586 usb_pipein(urb->pipe) ? "IN" : "OUT"); 587 ep->nextpid = USB_PID_ACK; 588 } else { 589 if (len % ep->maxpacket || 590 !(urb->transfer_flags & URB_ZERO_PACKET)) { 591 urbstat = 0; 592 DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", 593 __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", 594 urbstat, len, ep->maxpacket, urb->actual_length); 595 } 596 } 597 } 598 break; 599 case USB_PID_IN: 600 len = PTD_GET_COUNT(ptd); 601 BUG_ON(len > ep->length); 602 urb->actual_length += len; 603 BUG_ON(urb->actual_length > urb->transfer_buffer_length); 604 usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd)); 605 /* if transfer completed or (allowed) data underrun */ 606 if ((urb->transfer_buffer_length == urb->actual_length) || 607 len % ep->maxpacket) { 608 DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, 609 ep->num_req, len, ep->maxpacket, urbstat); 610 if (usb_pipecontrol(urb->pipe)) { 611 DBG(3, "%s: req %d %s Wait for ACK\n", __func__, 612 ep->num_req, 613 usb_pipein(urb->pipe) ? "IN" : "OUT"); 614 ep->nextpid = USB_PID_ACK; 615 } else { 616 urbstat = 0; 617 DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", 618 __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", 619 urbstat, len, ep->maxpacket, urb->actual_length); 620 } 621 } 622 break; 623 case USB_PID_SETUP: 624 if (urb->transfer_buffer_length == urb->actual_length) { 625 ep->nextpid = USB_PID_ACK; 626 } else if (usb_pipeout(urb->pipe)) { 627 usb_settoggle(udev, 0, 1, 1); 628 ep->nextpid = USB_PID_OUT; 629 } else { 630 usb_settoggle(udev, 0, 0, 1); 631 ep->nextpid = USB_PID_IN; 632 } 633 break; 634 case USB_PID_ACK: 635 DBG(3, "%s: req %d got ACK %d -> 0\n", __func__, ep->num_req, 636 urbstat); 637 WARN_ON(urbstat != -EINPROGRESS); 638 urbstat = 0; 639 ep->nextpid = 0; 640 break; 641 default: 642 BUG_ON(1); 643 } 644 645 out: 646 if (urbstat != -EINPROGRESS) { 647 DBG(2, "%s: Finishing ep %p req %d urb %p status %d\n", __func__, 648 ep, ep->num_req, urb, urbstat); 649 finish_request(isp1362_hcd, ep, urb, urbstat); 650 } 651 } 652 653 static void finish_unlinks(struct isp1362_hcd *isp1362_hcd) 654 { 655 struct isp1362_ep *ep; 656 struct isp1362_ep *tmp; 657 658 list_for_each_entry_safe(ep, tmp, &isp1362_hcd->remove_list, remove_list) { 659 struct isp1362_ep_queue *epq = 660 get_ptd_queue(isp1362_hcd, ep->ptd_offset); 661 int index = ep->ptd_index; 662 663 BUG_ON(epq == NULL); 664 if (index >= 0) { 665 DBG(1, "%s: remove PTD[%d] $%04x\n", __func__, index, ep->ptd_offset); 666 BUG_ON(ep->num_ptds == 0); 667 release_ptd_buffers(epq, ep); 668 } 669 if (!list_empty(&ep->hep->urb_list)) { 670 struct urb *urb = get_urb(ep); 671 672 DBG(1, "%s: Finishing req %d ep %p from remove_list\n", __func__, 673 ep->num_req, ep); 674 finish_request(isp1362_hcd, ep, urb, -ESHUTDOWN); 675 } 676 WARN_ON(list_empty(&ep->active)); 677 if (!list_empty(&ep->active)) { 678 list_del_init(&ep->active); 679 DBG(1, "%s: ep %p removed from active list\n", __func__, ep); 680 } 681 list_del_init(&ep->remove_list); 682 DBG(1, "%s: ep %p removed from remove_list\n", __func__, ep); 683 } 684 DBG(1, "%s: Done\n", __func__); 685 } 686 687 static inline void enable_atl_transfers(struct isp1362_hcd *isp1362_hcd, int count) 688 { 689 if (count > 0) { 690 if (count < isp1362_hcd->atl_queue.ptd_count) 691 isp1362_write_reg16(isp1362_hcd, HCATLDTC, count); 692 isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); 693 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, isp1362_hcd->atl_queue.skip_map); 694 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 695 } else 696 isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); 697 } 698 699 static inline void enable_intl_transfers(struct isp1362_hcd *isp1362_hcd) 700 { 701 isp1362_enable_int(isp1362_hcd, HCuPINT_INTL); 702 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 703 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, isp1362_hcd->intl_queue.skip_map); 704 } 705 706 static inline void enable_istl_transfers(struct isp1362_hcd *isp1362_hcd, int flip) 707 { 708 isp1362_enable_int(isp1362_hcd, flip ? HCuPINT_ISTL1 : HCuPINT_ISTL0); 709 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, flip ? 710 HCBUFSTAT_ISTL1_FULL : HCBUFSTAT_ISTL0_FULL); 711 } 712 713 static int submit_req(struct isp1362_hcd *isp1362_hcd, struct urb *urb, 714 struct isp1362_ep *ep, struct isp1362_ep_queue *epq) 715 { 716 int index; 717 718 prepare_ptd(isp1362_hcd, urb, ep, epq, 0); 719 index = claim_ptd_buffers(epq, ep, ep->length); 720 if (index == -ENOMEM) { 721 DBG(1, "%s: req %d No free %s PTD available: %d, %08lx:%08lx\n", __func__, 722 ep->num_req, epq->name, ep->num_ptds, epq->buf_map, epq->skip_map); 723 return index; 724 } else if (index == -EOVERFLOW) { 725 DBG(1, "%s: req %d Not enough space for %d byte %s PTD %d %08lx:%08lx\n", 726 __func__, ep->num_req, ep->length, epq->name, ep->num_ptds, 727 epq->buf_map, epq->skip_map); 728 return index; 729 } else 730 BUG_ON(index < 0); 731 list_add_tail(&ep->active, &epq->active); 732 DBG(1, "%s: ep %p req %d len %d added to active list %p\n", __func__, 733 ep, ep->num_req, ep->length, &epq->active); 734 DBG(1, "%s: Submitting %s PTD $%04x for ep %p req %d\n", __func__, epq->name, 735 ep->ptd_offset, ep, ep->num_req); 736 isp1362_write_ptd(isp1362_hcd, ep, epq); 737 __clear_bit(ep->ptd_index, &epq->skip_map); 738 739 return 0; 740 } 741 742 static void start_atl_transfers(struct isp1362_hcd *isp1362_hcd) 743 { 744 int ptd_count = 0; 745 struct isp1362_ep_queue *epq = &isp1362_hcd->atl_queue; 746 struct isp1362_ep *ep; 747 int defer = 0; 748 749 if (atomic_read(&epq->finishing)) { 750 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 751 return; 752 } 753 754 list_for_each_entry(ep, &isp1362_hcd->async, schedule) { 755 struct urb *urb = get_urb(ep); 756 int ret; 757 758 if (!list_empty(&ep->active)) { 759 DBG(2, "%s: Skipping active %s ep %p\n", __func__, epq->name, ep); 760 continue; 761 } 762 763 DBG(1, "%s: Processing %s ep %p req %d\n", __func__, epq->name, 764 ep, ep->num_req); 765 766 ret = submit_req(isp1362_hcd, urb, ep, epq); 767 if (ret == -ENOMEM) { 768 defer = 1; 769 break; 770 } else if (ret == -EOVERFLOW) { 771 defer = 1; 772 continue; 773 } 774 #ifdef BUGGY_PXA2XX_UDC_USBTEST 775 defer = ep->nextpid == USB_PID_SETUP; 776 #endif 777 ptd_count++; 778 } 779 780 /* Avoid starving of endpoints */ 781 if (isp1362_hcd->async.next != isp1362_hcd->async.prev) { 782 DBG(2, "%s: Cycling ASYNC schedule %d\n", __func__, ptd_count); 783 list_move(&isp1362_hcd->async, isp1362_hcd->async.next); 784 } 785 if (ptd_count || defer) 786 enable_atl_transfers(isp1362_hcd, defer ? 0 : ptd_count); 787 788 epq->ptd_count += ptd_count; 789 if (epq->ptd_count > epq->stat_maxptds) { 790 epq->stat_maxptds = epq->ptd_count; 791 DBG(0, "%s: max_ptds: %d\n", __func__, epq->stat_maxptds); 792 } 793 } 794 795 static void start_intl_transfers(struct isp1362_hcd *isp1362_hcd) 796 { 797 int ptd_count = 0; 798 struct isp1362_ep_queue *epq = &isp1362_hcd->intl_queue; 799 struct isp1362_ep *ep; 800 801 if (atomic_read(&epq->finishing)) { 802 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 803 return; 804 } 805 806 list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { 807 struct urb *urb = get_urb(ep); 808 int ret; 809 810 if (!list_empty(&ep->active)) { 811 DBG(1, "%s: Skipping active %s ep %p\n", __func__, 812 epq->name, ep); 813 continue; 814 } 815 816 DBG(1, "%s: Processing %s ep %p req %d\n", __func__, 817 epq->name, ep, ep->num_req); 818 ret = submit_req(isp1362_hcd, urb, ep, epq); 819 if (ret == -ENOMEM) 820 break; 821 else if (ret == -EOVERFLOW) 822 continue; 823 ptd_count++; 824 } 825 826 if (ptd_count) { 827 static int last_count; 828 829 if (ptd_count != last_count) { 830 DBG(0, "%s: ptd_count: %d\n", __func__, ptd_count); 831 last_count = ptd_count; 832 } 833 enable_intl_transfers(isp1362_hcd); 834 } 835 836 epq->ptd_count += ptd_count; 837 if (epq->ptd_count > epq->stat_maxptds) 838 epq->stat_maxptds = epq->ptd_count; 839 } 840 841 static inline int next_ptd(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) 842 { 843 u16 ptd_offset = ep->ptd_offset; 844 int num_ptds = (ep->length + PTD_HEADER_SIZE + (epq->blk_size - 1)) / epq->blk_size; 845 846 DBG(2, "%s: PTD offset $%04x + %04x => %d * %04x -> $%04x\n", __func__, ptd_offset, 847 ep->length, num_ptds, epq->blk_size, ptd_offset + num_ptds * epq->blk_size); 848 849 ptd_offset += num_ptds * epq->blk_size; 850 if (ptd_offset < epq->buf_start + epq->buf_size) 851 return ptd_offset; 852 else 853 return -ENOMEM; 854 } 855 856 static void start_iso_transfers(struct isp1362_hcd *isp1362_hcd) 857 { 858 int ptd_count = 0; 859 int flip = isp1362_hcd->istl_flip; 860 struct isp1362_ep_queue *epq; 861 int ptd_offset; 862 struct isp1362_ep *ep; 863 struct isp1362_ep *tmp; 864 u16 fno = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 865 866 fill2: 867 epq = &isp1362_hcd->istl_queue[flip]; 868 if (atomic_read(&epq->finishing)) { 869 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); 870 return; 871 } 872 873 if (!list_empty(&epq->active)) 874 return; 875 876 ptd_offset = epq->buf_start; 877 list_for_each_entry_safe(ep, tmp, &isp1362_hcd->isoc, schedule) { 878 struct urb *urb = get_urb(ep); 879 s16 diff = fno - (u16)urb->start_frame; 880 881 DBG(1, "%s: Processing %s ep %p\n", __func__, epq->name, ep); 882 883 if (diff > urb->number_of_packets) { 884 /* time frame for this URB has elapsed */ 885 finish_request(isp1362_hcd, ep, urb, -EOVERFLOW); 886 continue; 887 } else if (diff < -1) { 888 /* URB is not due in this frame or the next one. 889 * Comparing with '-1' instead of '0' accounts for double 890 * buffering in the ISP1362 which enables us to queue the PTD 891 * one frame ahead of time 892 */ 893 } else if (diff == -1) { 894 /* submit PTD's that are due in the next frame */ 895 prepare_ptd(isp1362_hcd, urb, ep, epq, fno); 896 if (ptd_offset + PTD_HEADER_SIZE + ep->length > 897 epq->buf_start + epq->buf_size) { 898 pr_err("%s: Not enough ISO buffer space for %d byte PTD\n", 899 __func__, ep->length); 900 continue; 901 } 902 ep->ptd_offset = ptd_offset; 903 list_add_tail(&ep->active, &epq->active); 904 905 ptd_offset = next_ptd(epq, ep); 906 if (ptd_offset < 0) { 907 pr_warn("%s: req %d No more %s PTD buffers available\n", 908 __func__, ep->num_req, epq->name); 909 break; 910 } 911 } 912 } 913 list_for_each_entry(ep, &epq->active, active) { 914 if (epq->active.next == &ep->active) 915 ep->ptd.mps |= PTD_LAST_MSK; 916 isp1362_write_ptd(isp1362_hcd, ep, epq); 917 ptd_count++; 918 } 919 920 if (ptd_count) 921 enable_istl_transfers(isp1362_hcd, flip); 922 923 epq->ptd_count += ptd_count; 924 if (epq->ptd_count > epq->stat_maxptds) 925 epq->stat_maxptds = epq->ptd_count; 926 927 /* check, whether the second ISTL buffer may also be filled */ 928 if (!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 929 (flip ? HCBUFSTAT_ISTL0_FULL : HCBUFSTAT_ISTL1_FULL))) { 930 fno++; 931 ptd_count = 0; 932 flip = 1 - flip; 933 goto fill2; 934 } 935 } 936 937 static void finish_transfers(struct isp1362_hcd *isp1362_hcd, unsigned long done_map, 938 struct isp1362_ep_queue *epq) 939 { 940 struct isp1362_ep *ep; 941 struct isp1362_ep *tmp; 942 943 if (list_empty(&epq->active)) { 944 DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); 945 return; 946 } 947 948 DBG(1, "%s: Finishing %s transfers %08lx\n", __func__, epq->name, done_map); 949 950 atomic_inc(&epq->finishing); 951 list_for_each_entry_safe(ep, tmp, &epq->active, active) { 952 int index = ep->ptd_index; 953 954 DBG(1, "%s: Checking %s PTD[%02x] $%04x\n", __func__, epq->name, 955 index, ep->ptd_offset); 956 957 BUG_ON(index < 0); 958 if (__test_and_clear_bit(index, &done_map)) { 959 isp1362_read_ptd(isp1362_hcd, ep, epq); 960 epq->free_ptd = index; 961 BUG_ON(ep->num_ptds == 0); 962 release_ptd_buffers(epq, ep); 963 964 DBG(1, "%s: ep %p req %d removed from active list\n", __func__, 965 ep, ep->num_req); 966 if (!list_empty(&ep->remove_list)) { 967 list_del_init(&ep->remove_list); 968 DBG(1, "%s: ep %p removed from remove list\n", __func__, ep); 969 } 970 DBG(1, "%s: Postprocessing %s ep %p req %d\n", __func__, epq->name, 971 ep, ep->num_req); 972 postproc_ep(isp1362_hcd, ep); 973 } 974 if (!done_map) 975 break; 976 } 977 if (done_map) 978 pr_warn("%s: done_map not clear: %08lx:%08lx\n", 979 __func__, done_map, epq->skip_map); 980 atomic_dec(&epq->finishing); 981 } 982 983 static void finish_iso_transfers(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep_queue *epq) 984 { 985 struct isp1362_ep *ep; 986 struct isp1362_ep *tmp; 987 988 if (list_empty(&epq->active)) { 989 DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); 990 return; 991 } 992 993 DBG(1, "%s: Finishing %s transfers\n", __func__, epq->name); 994 995 atomic_inc(&epq->finishing); 996 list_for_each_entry_safe(ep, tmp, &epq->active, active) { 997 DBG(1, "%s: Checking PTD $%04x\n", __func__, ep->ptd_offset); 998 999 isp1362_read_ptd(isp1362_hcd, ep, epq); 1000 DBG(1, "%s: Postprocessing %s ep %p\n", __func__, epq->name, ep); 1001 postproc_ep(isp1362_hcd, ep); 1002 } 1003 WARN_ON(epq->blk_size != 0); 1004 atomic_dec(&epq->finishing); 1005 } 1006 1007 static irqreturn_t isp1362_irq(struct usb_hcd *hcd) 1008 { 1009 int handled = 0; 1010 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1011 u16 irqstat; 1012 u16 svc_mask; 1013 1014 spin_lock(&isp1362_hcd->lock); 1015 1016 BUG_ON(isp1362_hcd->irq_active++); 1017 1018 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 1019 1020 irqstat = isp1362_read_reg16(isp1362_hcd, HCuPINT); 1021 DBG(3, "%s: got IRQ %04x:%04x\n", __func__, irqstat, isp1362_hcd->irqenb); 1022 1023 /* only handle interrupts that are currently enabled */ 1024 irqstat &= isp1362_hcd->irqenb; 1025 isp1362_write_reg16(isp1362_hcd, HCuPINT, irqstat); 1026 svc_mask = irqstat; 1027 1028 if (irqstat & HCuPINT_SOF) { 1029 isp1362_hcd->irqenb &= ~HCuPINT_SOF; 1030 isp1362_hcd->irq_stat[ISP1362_INT_SOF]++; 1031 handled = 1; 1032 svc_mask &= ~HCuPINT_SOF; 1033 DBG(3, "%s: SOF\n", __func__); 1034 isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1035 if (!list_empty(&isp1362_hcd->remove_list)) 1036 finish_unlinks(isp1362_hcd); 1037 if (!list_empty(&isp1362_hcd->async) && !(irqstat & HCuPINT_ATL)) { 1038 if (list_empty(&isp1362_hcd->atl_queue.active)) { 1039 start_atl_transfers(isp1362_hcd); 1040 } else { 1041 isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); 1042 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, 1043 isp1362_hcd->atl_queue.skip_map); 1044 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 1045 } 1046 } 1047 } 1048 1049 if (irqstat & HCuPINT_ISTL0) { 1050 isp1362_hcd->irq_stat[ISP1362_INT_ISTL0]++; 1051 handled = 1; 1052 svc_mask &= ~HCuPINT_ISTL0; 1053 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL0_FULL); 1054 DBG(1, "%s: ISTL0\n", __func__); 1055 WARN_ON((int)!!isp1362_hcd->istl_flip); 1056 WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1057 HCBUFSTAT_ISTL0_ACTIVE); 1058 WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1059 HCBUFSTAT_ISTL0_DONE)); 1060 isp1362_hcd->irqenb &= ~HCuPINT_ISTL0; 1061 } 1062 1063 if (irqstat & HCuPINT_ISTL1) { 1064 isp1362_hcd->irq_stat[ISP1362_INT_ISTL1]++; 1065 handled = 1; 1066 svc_mask &= ~HCuPINT_ISTL1; 1067 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL1_FULL); 1068 DBG(1, "%s: ISTL1\n", __func__); 1069 WARN_ON(!(int)isp1362_hcd->istl_flip); 1070 WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1071 HCBUFSTAT_ISTL1_ACTIVE); 1072 WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & 1073 HCBUFSTAT_ISTL1_DONE)); 1074 isp1362_hcd->irqenb &= ~HCuPINT_ISTL1; 1075 } 1076 1077 if (irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) { 1078 WARN_ON((irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) == 1079 (HCuPINT_ISTL0 | HCuPINT_ISTL1)); 1080 finish_iso_transfers(isp1362_hcd, 1081 &isp1362_hcd->istl_queue[isp1362_hcd->istl_flip]); 1082 start_iso_transfers(isp1362_hcd); 1083 isp1362_hcd->istl_flip = 1 - isp1362_hcd->istl_flip; 1084 } 1085 1086 if (irqstat & HCuPINT_INTL) { 1087 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); 1088 u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCINTLSKIP); 1089 isp1362_hcd->irq_stat[ISP1362_INT_INTL]++; 1090 1091 DBG(2, "%s: INTL\n", __func__); 1092 1093 svc_mask &= ~HCuPINT_INTL; 1094 1095 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, skip_map | done_map); 1096 if (~(done_map | skip_map) == 0) 1097 /* All PTDs are finished, disable INTL processing entirely */ 1098 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); 1099 1100 handled = 1; 1101 WARN_ON(!done_map); 1102 if (done_map) { 1103 DBG(3, "%s: INTL done_map %08x\n", __func__, done_map); 1104 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); 1105 start_intl_transfers(isp1362_hcd); 1106 } 1107 } 1108 1109 if (irqstat & HCuPINT_ATL) { 1110 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); 1111 u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCATLSKIP); 1112 isp1362_hcd->irq_stat[ISP1362_INT_ATL]++; 1113 1114 DBG(2, "%s: ATL\n", __func__); 1115 1116 svc_mask &= ~HCuPINT_ATL; 1117 1118 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, skip_map | done_map); 1119 if (~(done_map | skip_map) == 0) 1120 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); 1121 if (done_map) { 1122 DBG(3, "%s: ATL done_map %08x\n", __func__, done_map); 1123 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); 1124 start_atl_transfers(isp1362_hcd); 1125 } 1126 handled = 1; 1127 } 1128 1129 if (irqstat & HCuPINT_OPR) { 1130 u32 intstat = isp1362_read_reg32(isp1362_hcd, HCINTSTAT); 1131 isp1362_hcd->irq_stat[ISP1362_INT_OPR]++; 1132 1133 svc_mask &= ~HCuPINT_OPR; 1134 DBG(2, "%s: OPR %08x:%08x\n", __func__, intstat, isp1362_hcd->intenb); 1135 intstat &= isp1362_hcd->intenb; 1136 if (intstat & OHCI_INTR_UE) { 1137 pr_err("Unrecoverable error\n"); 1138 /* FIXME: do here reset or cleanup or whatever */ 1139 } 1140 if (intstat & OHCI_INTR_RHSC) { 1141 isp1362_hcd->rhstatus = isp1362_read_reg32(isp1362_hcd, HCRHSTATUS); 1142 isp1362_hcd->rhport[0] = isp1362_read_reg32(isp1362_hcd, HCRHPORT1); 1143 isp1362_hcd->rhport[1] = isp1362_read_reg32(isp1362_hcd, HCRHPORT2); 1144 } 1145 if (intstat & OHCI_INTR_RD) { 1146 pr_info("%s: RESUME DETECTED\n", __func__); 1147 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1148 usb_hcd_resume_root_hub(hcd); 1149 } 1150 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, intstat); 1151 irqstat &= ~HCuPINT_OPR; 1152 handled = 1; 1153 } 1154 1155 if (irqstat & HCuPINT_SUSP) { 1156 isp1362_hcd->irq_stat[ISP1362_INT_SUSP]++; 1157 handled = 1; 1158 svc_mask &= ~HCuPINT_SUSP; 1159 1160 pr_info("%s: SUSPEND IRQ\n", __func__); 1161 } 1162 1163 if (irqstat & HCuPINT_CLKRDY) { 1164 isp1362_hcd->irq_stat[ISP1362_INT_CLKRDY]++; 1165 handled = 1; 1166 isp1362_hcd->irqenb &= ~HCuPINT_CLKRDY; 1167 svc_mask &= ~HCuPINT_CLKRDY; 1168 pr_info("%s: CLKRDY IRQ\n", __func__); 1169 } 1170 1171 if (svc_mask) 1172 pr_err("%s: Unserviced interrupt(s) %04x\n", __func__, svc_mask); 1173 1174 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 1175 isp1362_hcd->irq_active--; 1176 spin_unlock(&isp1362_hcd->lock); 1177 1178 return IRQ_RETVAL(handled); 1179 } 1180 1181 /*-------------------------------------------------------------------------*/ 1182 1183 #define MAX_PERIODIC_LOAD 900 /* out of 1000 usec */ 1184 static int balance(struct isp1362_hcd *isp1362_hcd, u16 interval, u16 load) 1185 { 1186 int i, branch = -ENOSPC; 1187 1188 /* search for the least loaded schedule branch of that interval 1189 * which has enough bandwidth left unreserved. 1190 */ 1191 for (i = 0; i < interval; i++) { 1192 if (branch < 0 || isp1362_hcd->load[branch] > isp1362_hcd->load[i]) { 1193 int j; 1194 1195 for (j = i; j < PERIODIC_SIZE; j += interval) { 1196 if ((isp1362_hcd->load[j] + load) > MAX_PERIODIC_LOAD) { 1197 pr_err("%s: new load %d load[%02x] %d max %d\n", __func__, 1198 load, j, isp1362_hcd->load[j], MAX_PERIODIC_LOAD); 1199 break; 1200 } 1201 } 1202 if (j < PERIODIC_SIZE) 1203 continue; 1204 branch = i; 1205 } 1206 } 1207 return branch; 1208 } 1209 1210 /* NB! ALL the code above this point runs with isp1362_hcd->lock 1211 held, irqs off 1212 */ 1213 1214 /*-------------------------------------------------------------------------*/ 1215 1216 static int isp1362_urb_enqueue(struct usb_hcd *hcd, 1217 struct urb *urb, 1218 gfp_t mem_flags) 1219 { 1220 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1221 struct usb_device *udev = urb->dev; 1222 unsigned int pipe = urb->pipe; 1223 int is_out = !usb_pipein(pipe); 1224 int type = usb_pipetype(pipe); 1225 int epnum = usb_pipeendpoint(pipe); 1226 struct usb_host_endpoint *hep = urb->ep; 1227 struct isp1362_ep *ep = NULL; 1228 unsigned long flags; 1229 int retval = 0; 1230 1231 DBG(3, "%s: urb %p\n", __func__, urb); 1232 1233 if (type == PIPE_ISOCHRONOUS) { 1234 pr_err("Isochronous transfers not supported\n"); 1235 return -ENOSPC; 1236 } 1237 1238 URB_DBG("%s: FA %d ep%d%s %s: len %d %s%s\n", __func__, 1239 usb_pipedevice(pipe), epnum, 1240 is_out ? "out" : "in", 1241 usb_pipecontrol(pipe) ? "ctrl" : 1242 usb_pipeint(pipe) ? "int" : 1243 usb_pipebulk(pipe) ? "bulk" : 1244 "iso", 1245 urb->transfer_buffer_length, 1246 (urb->transfer_flags & URB_ZERO_PACKET) ? "ZERO_PACKET " : "", 1247 !(urb->transfer_flags & URB_SHORT_NOT_OK) ? 1248 "short_ok" : ""); 1249 1250 /* avoid all allocations within spinlocks: request or endpoint */ 1251 if (!hep->hcpriv) { 1252 ep = kzalloc(sizeof *ep, mem_flags); 1253 if (!ep) 1254 return -ENOMEM; 1255 } 1256 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1257 1258 /* don't submit to a dead or disabled port */ 1259 if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) & 1260 USB_PORT_STAT_ENABLE) || 1261 !HC_IS_RUNNING(hcd->state)) { 1262 kfree(ep); 1263 retval = -ENODEV; 1264 goto fail_not_linked; 1265 } 1266 1267 retval = usb_hcd_link_urb_to_ep(hcd, urb); 1268 if (retval) { 1269 kfree(ep); 1270 goto fail_not_linked; 1271 } 1272 1273 if (hep->hcpriv) { 1274 ep = hep->hcpriv; 1275 } else { 1276 INIT_LIST_HEAD(&ep->schedule); 1277 INIT_LIST_HEAD(&ep->active); 1278 INIT_LIST_HEAD(&ep->remove_list); 1279 ep->udev = usb_get_dev(udev); 1280 ep->hep = hep; 1281 ep->epnum = epnum; 1282 ep->maxpacket = usb_maxpacket(udev, urb->pipe); 1283 ep->ptd_offset = -EINVAL; 1284 ep->ptd_index = -EINVAL; 1285 usb_settoggle(udev, epnum, is_out, 0); 1286 1287 if (type == PIPE_CONTROL) 1288 ep->nextpid = USB_PID_SETUP; 1289 else if (is_out) 1290 ep->nextpid = USB_PID_OUT; 1291 else 1292 ep->nextpid = USB_PID_IN; 1293 1294 switch (type) { 1295 case PIPE_ISOCHRONOUS: 1296 case PIPE_INTERRUPT: 1297 if (urb->interval > PERIODIC_SIZE) 1298 urb->interval = PERIODIC_SIZE; 1299 ep->interval = urb->interval; 1300 ep->branch = PERIODIC_SIZE; 1301 ep->load = usb_calc_bus_time(udev->speed, !is_out, 1302 type == PIPE_ISOCHRONOUS, 1303 usb_maxpacket(udev, pipe)) / 1000; 1304 break; 1305 } 1306 hep->hcpriv = ep; 1307 } 1308 ep->num_req = isp1362_hcd->req_serial++; 1309 1310 /* maybe put endpoint into schedule */ 1311 switch (type) { 1312 case PIPE_CONTROL: 1313 case PIPE_BULK: 1314 if (list_empty(&ep->schedule)) { 1315 DBG(1, "%s: Adding ep %p req %d to async schedule\n", 1316 __func__, ep, ep->num_req); 1317 list_add_tail(&ep->schedule, &isp1362_hcd->async); 1318 } 1319 break; 1320 case PIPE_ISOCHRONOUS: 1321 case PIPE_INTERRUPT: 1322 urb->interval = ep->interval; 1323 1324 /* urb submitted for already existing EP */ 1325 if (ep->branch < PERIODIC_SIZE) 1326 break; 1327 1328 retval = balance(isp1362_hcd, ep->interval, ep->load); 1329 if (retval < 0) { 1330 pr_err("%s: balance returned %d\n", __func__, retval); 1331 goto fail; 1332 } 1333 ep->branch = retval; 1334 retval = 0; 1335 isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1336 DBG(1, "%s: Current frame %04x branch %02x start_frame %04x(%04x)\n", 1337 __func__, isp1362_hcd->fmindex, ep->branch, 1338 ((isp1362_hcd->fmindex + PERIODIC_SIZE - 1) & 1339 ~(PERIODIC_SIZE - 1)) + ep->branch, 1340 (isp1362_hcd->fmindex & (PERIODIC_SIZE - 1)) + ep->branch); 1341 1342 if (list_empty(&ep->schedule)) { 1343 if (type == PIPE_ISOCHRONOUS) { 1344 u16 frame = isp1362_hcd->fmindex; 1345 1346 frame += max_t(u16, 8, ep->interval); 1347 frame &= ~(ep->interval - 1); 1348 frame |= ep->branch; 1349 if (frame_before(frame, isp1362_hcd->fmindex)) 1350 frame += ep->interval; 1351 urb->start_frame = frame; 1352 1353 DBG(1, "%s: Adding ep %p to isoc schedule\n", __func__, ep); 1354 list_add_tail(&ep->schedule, &isp1362_hcd->isoc); 1355 } else { 1356 DBG(1, "%s: Adding ep %p to periodic schedule\n", __func__, ep); 1357 list_add_tail(&ep->schedule, &isp1362_hcd->periodic); 1358 } 1359 } else 1360 DBG(1, "%s: ep %p already scheduled\n", __func__, ep); 1361 1362 DBG(2, "%s: load %d bandwidth %d -> %d\n", __func__, 1363 ep->load / ep->interval, isp1362_hcd->load[ep->branch], 1364 isp1362_hcd->load[ep->branch] + ep->load); 1365 isp1362_hcd->load[ep->branch] += ep->load; 1366 } 1367 1368 urb->hcpriv = hep; 1369 ALIGNSTAT(isp1362_hcd, urb->transfer_buffer); 1370 1371 switch (type) { 1372 case PIPE_CONTROL: 1373 case PIPE_BULK: 1374 start_atl_transfers(isp1362_hcd); 1375 break; 1376 case PIPE_INTERRUPT: 1377 start_intl_transfers(isp1362_hcd); 1378 break; 1379 case PIPE_ISOCHRONOUS: 1380 start_iso_transfers(isp1362_hcd); 1381 break; 1382 default: 1383 BUG(); 1384 } 1385 fail: 1386 if (retval) 1387 usb_hcd_unlink_urb_from_ep(hcd, urb); 1388 1389 1390 fail_not_linked: 1391 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1392 if (retval) 1393 DBG(0, "%s: urb %p failed with %d\n", __func__, urb, retval); 1394 return retval; 1395 } 1396 1397 static int isp1362_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) 1398 { 1399 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1400 struct usb_host_endpoint *hep; 1401 unsigned long flags; 1402 struct isp1362_ep *ep; 1403 int retval = 0; 1404 1405 DBG(3, "%s: urb %p\n", __func__, urb); 1406 1407 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1408 retval = usb_hcd_check_unlink_urb(hcd, urb, status); 1409 if (retval) 1410 goto done; 1411 1412 hep = urb->hcpriv; 1413 1414 if (!hep) { 1415 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1416 return -EIDRM; 1417 } 1418 1419 ep = hep->hcpriv; 1420 if (ep) { 1421 /* In front of queue? */ 1422 if (ep->hep->urb_list.next == &urb->urb_list) { 1423 if (!list_empty(&ep->active)) { 1424 DBG(1, "%s: urb %p ep %p req %d active PTD[%d] $%04x\n", __func__, 1425 urb, ep, ep->num_req, ep->ptd_index, ep->ptd_offset); 1426 /* disable processing and queue PTD for removal */ 1427 remove_ptd(isp1362_hcd, ep); 1428 urb = NULL; 1429 } 1430 } 1431 if (urb) { 1432 DBG(1, "%s: Finishing ep %p req %d\n", __func__, ep, 1433 ep->num_req); 1434 finish_request(isp1362_hcd, ep, urb, status); 1435 } else 1436 DBG(1, "%s: urb %p active; wait4irq\n", __func__, urb); 1437 } else { 1438 pr_warn("%s: No EP in URB %p\n", __func__, urb); 1439 retval = -EINVAL; 1440 } 1441 done: 1442 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1443 1444 DBG(3, "%s: exit\n", __func__); 1445 1446 return retval; 1447 } 1448 1449 static void isp1362_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) 1450 { 1451 struct isp1362_ep *ep = hep->hcpriv; 1452 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1453 unsigned long flags; 1454 1455 DBG(1, "%s: ep %p\n", __func__, ep); 1456 if (!ep) 1457 return; 1458 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1459 if (!list_empty(&hep->urb_list)) { 1460 if (!list_empty(&ep->active) && list_empty(&ep->remove_list)) { 1461 DBG(1, "%s: Removing ep %p req %d PTD[%d] $%04x\n", __func__, 1462 ep, ep->num_req, ep->ptd_index, ep->ptd_offset); 1463 remove_ptd(isp1362_hcd, ep); 1464 pr_info("%s: Waiting for Interrupt to clean up\n", __func__); 1465 } 1466 } 1467 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1468 /* Wait for interrupt to clear out active list */ 1469 while (!list_empty(&ep->active)) 1470 msleep(1); 1471 1472 DBG(1, "%s: Freeing EP %p\n", __func__, ep); 1473 1474 usb_put_dev(ep->udev); 1475 kfree(ep); 1476 hep->hcpriv = NULL; 1477 } 1478 1479 static int isp1362_get_frame(struct usb_hcd *hcd) 1480 { 1481 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1482 u32 fmnum; 1483 unsigned long flags; 1484 1485 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1486 fmnum = isp1362_read_reg32(isp1362_hcd, HCFMNUM); 1487 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1488 1489 return (int)fmnum; 1490 } 1491 1492 /*-------------------------------------------------------------------------*/ 1493 1494 /* Adapted from ohci-hub.c */ 1495 static int isp1362_hub_status_data(struct usb_hcd *hcd, char *buf) 1496 { 1497 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1498 int ports, i, changed = 0; 1499 unsigned long flags; 1500 1501 if (!HC_IS_RUNNING(hcd->state)) 1502 return -ESHUTDOWN; 1503 1504 /* Report no status change now, if we are scheduled to be 1505 called later */ 1506 if (timer_pending(&hcd->rh_timer)) 1507 return 0; 1508 1509 ports = isp1362_hcd->rhdesca & RH_A_NDP; 1510 BUG_ON(ports > 2); 1511 1512 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1513 /* init status */ 1514 if (isp1362_hcd->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) 1515 buf[0] = changed = 1; 1516 else 1517 buf[0] = 0; 1518 1519 for (i = 0; i < ports; i++) { 1520 u32 status = isp1362_hcd->rhport[i]; 1521 1522 if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | 1523 RH_PS_OCIC | RH_PS_PRSC)) { 1524 changed = 1; 1525 buf[0] |= 1 << (i + 1); 1526 continue; 1527 } 1528 1529 if (!(status & RH_PS_CCS)) 1530 continue; 1531 } 1532 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1533 return changed; 1534 } 1535 1536 static void isp1362_hub_descriptor(struct isp1362_hcd *isp1362_hcd, 1537 struct usb_hub_descriptor *desc) 1538 { 1539 u32 reg = isp1362_hcd->rhdesca; 1540 1541 DBG(3, "%s: enter\n", __func__); 1542 1543 desc->bDescriptorType = USB_DT_HUB; 1544 desc->bDescLength = 9; 1545 desc->bHubContrCurrent = 0; 1546 desc->bNbrPorts = reg & 0x3; 1547 /* Power switching, device type, overcurrent. */ 1548 desc->wHubCharacteristics = cpu_to_le16((reg >> 8) & 1549 (HUB_CHAR_LPSM | 1550 HUB_CHAR_COMPOUND | 1551 HUB_CHAR_OCPM)); 1552 DBG(0, "%s: hubcharacteristics = %02x\n", __func__, 1553 desc->wHubCharacteristics); 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 break; 1583 case C_HUB_LOCAL_POWER: 1584 DBG(0, "C_HUB_LOCAL_POWER\n"); 1585 break; 1586 default: 1587 goto error; 1588 } 1589 break; 1590 case SetHubFeature: 1591 DBG(0, "SetHubFeature: "); 1592 switch (wValue) { 1593 case C_HUB_OVER_CURRENT: 1594 case C_HUB_LOCAL_POWER: 1595 DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); 1596 break; 1597 default: 1598 goto error; 1599 } 1600 break; 1601 case GetHubDescriptor: 1602 DBG(0, "GetHubDescriptor\n"); 1603 isp1362_hub_descriptor(isp1362_hcd, (struct usb_hub_descriptor *)buf); 1604 break; 1605 case GetHubStatus: 1606 DBG(0, "GetHubStatus\n"); 1607 put_unaligned(cpu_to_le32(0), (__le32 *) buf); 1608 break; 1609 case GetPortStatus: 1610 #ifndef VERBOSE 1611 DBG(0, "GetPortStatus\n"); 1612 #endif 1613 if (!wIndex || wIndex > ports) 1614 goto error; 1615 tmp = isp1362_hcd->rhport[--wIndex]; 1616 put_unaligned(cpu_to_le32(tmp), (__le32 *) buf); 1617 break; 1618 case ClearPortFeature: 1619 DBG(0, "ClearPortFeature: "); 1620 if (!wIndex || wIndex > ports) 1621 goto error; 1622 wIndex--; 1623 1624 switch (wValue) { 1625 case USB_PORT_FEAT_ENABLE: 1626 DBG(0, "USB_PORT_FEAT_ENABLE\n"); 1627 tmp = RH_PS_CCS; 1628 break; 1629 case USB_PORT_FEAT_C_ENABLE: 1630 DBG(0, "USB_PORT_FEAT_C_ENABLE\n"); 1631 tmp = RH_PS_PESC; 1632 break; 1633 case USB_PORT_FEAT_SUSPEND: 1634 DBG(0, "USB_PORT_FEAT_SUSPEND\n"); 1635 tmp = RH_PS_POCI; 1636 break; 1637 case USB_PORT_FEAT_C_SUSPEND: 1638 DBG(0, "USB_PORT_FEAT_C_SUSPEND\n"); 1639 tmp = RH_PS_PSSC; 1640 break; 1641 case USB_PORT_FEAT_POWER: 1642 DBG(0, "USB_PORT_FEAT_POWER\n"); 1643 tmp = RH_PS_LSDA; 1644 1645 break; 1646 case USB_PORT_FEAT_C_CONNECTION: 1647 DBG(0, "USB_PORT_FEAT_C_CONNECTION\n"); 1648 tmp = RH_PS_CSC; 1649 break; 1650 case USB_PORT_FEAT_C_OVER_CURRENT: 1651 DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n"); 1652 tmp = RH_PS_OCIC; 1653 break; 1654 case USB_PORT_FEAT_C_RESET: 1655 DBG(0, "USB_PORT_FEAT_C_RESET\n"); 1656 tmp = RH_PS_PRSC; 1657 break; 1658 default: 1659 goto error; 1660 } 1661 1662 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1663 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, tmp); 1664 isp1362_hcd->rhport[wIndex] = 1665 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1666 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1667 break; 1668 case SetPortFeature: 1669 DBG(0, "SetPortFeature: "); 1670 if (!wIndex || wIndex > ports) 1671 goto error; 1672 wIndex--; 1673 switch (wValue) { 1674 case USB_PORT_FEAT_SUSPEND: 1675 DBG(0, "USB_PORT_FEAT_SUSPEND\n"); 1676 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1677 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS); 1678 isp1362_hcd->rhport[wIndex] = 1679 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1680 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1681 break; 1682 case USB_PORT_FEAT_POWER: 1683 DBG(0, "USB_PORT_FEAT_POWER\n"); 1684 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1685 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS); 1686 isp1362_hcd->rhport[wIndex] = 1687 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1688 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1689 break; 1690 case USB_PORT_FEAT_RESET: 1691 DBG(0, "USB_PORT_FEAT_RESET\n"); 1692 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1693 1694 t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH); 1695 while (time_before(jiffies, t1)) { 1696 /* spin until any current reset finishes */ 1697 for (;;) { 1698 tmp = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); 1699 if (!(tmp & RH_PS_PRS)) 1700 break; 1701 udelay(500); 1702 } 1703 if (!(tmp & RH_PS_CCS)) 1704 break; 1705 /* Reset lasts 10ms (claims datasheet) */ 1706 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, (RH_PS_PRS)); 1707 1708 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1709 msleep(10); 1710 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1711 } 1712 1713 isp1362_hcd->rhport[wIndex] = isp1362_read_reg32(isp1362_hcd, 1714 HCRHPORT1 + wIndex); 1715 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1716 break; 1717 default: 1718 goto error; 1719 } 1720 break; 1721 1722 default: 1723 error: 1724 /* "protocol stall" on error */ 1725 DBG(0, "PROTOCOL STALL\n"); 1726 retval = -EPIPE; 1727 } 1728 1729 return retval; 1730 } 1731 1732 #ifdef CONFIG_PM 1733 static int isp1362_bus_suspend(struct usb_hcd *hcd) 1734 { 1735 int status = 0; 1736 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1737 unsigned long flags; 1738 1739 if (time_before(jiffies, isp1362_hcd->next_statechange)) 1740 msleep(5); 1741 1742 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1743 1744 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1745 switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { 1746 case OHCI_USB_RESUME: 1747 DBG(0, "%s: resume/suspend?\n", __func__); 1748 isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; 1749 isp1362_hcd->hc_control |= OHCI_USB_RESET; 1750 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1751 fallthrough; 1752 case OHCI_USB_RESET: 1753 status = -EBUSY; 1754 pr_warn("%s: needs reinit!\n", __func__); 1755 goto done; 1756 case OHCI_USB_SUSPEND: 1757 pr_warn("%s: already suspended?\n", __func__); 1758 goto done; 1759 } 1760 DBG(0, "%s: suspend root hub\n", __func__); 1761 1762 /* First stop any processing */ 1763 hcd->state = HC_STATE_QUIESCING; 1764 if (!list_empty(&isp1362_hcd->atl_queue.active) || 1765 !list_empty(&isp1362_hcd->intl_queue.active) || 1766 !list_empty(&isp1362_hcd->istl_queue[0] .active) || 1767 !list_empty(&isp1362_hcd->istl_queue[1] .active)) { 1768 int limit; 1769 1770 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); 1771 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); 1772 isp1362_write_reg16(isp1362_hcd, HCBUFSTAT, 0); 1773 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 1774 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, OHCI_INTR_SF); 1775 1776 DBG(0, "%s: stopping schedules ...\n", __func__); 1777 limit = 2000; 1778 while (limit > 0) { 1779 udelay(250); 1780 limit -= 250; 1781 if (isp1362_read_reg32(isp1362_hcd, HCINTSTAT) & OHCI_INTR_SF) 1782 break; 1783 } 1784 mdelay(7); 1785 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ATL) { 1786 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); 1787 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); 1788 } 1789 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_INTL) { 1790 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); 1791 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); 1792 } 1793 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL0) 1794 finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[0]); 1795 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL1) 1796 finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[1]); 1797 } 1798 DBG(0, "%s: HCINTSTAT: %08x\n", __func__, 1799 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1800 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, 1801 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1802 1803 /* Suspend hub */ 1804 isp1362_hcd->hc_control = OHCI_USB_SUSPEND; 1805 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1806 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1807 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1808 1809 #if 1 1810 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1811 if ((isp1362_hcd->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_SUSPEND) { 1812 pr_err("%s: controller won't suspend %08x\n", __func__, 1813 isp1362_hcd->hc_control); 1814 status = -EBUSY; 1815 } else 1816 #endif 1817 { 1818 /* no resumes until devices finish suspending */ 1819 isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(5); 1820 } 1821 done: 1822 if (status == 0) { 1823 hcd->state = HC_STATE_SUSPENDED; 1824 DBG(0, "%s: HCD suspended: %08x\n", __func__, 1825 isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 1826 } 1827 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1828 return status; 1829 } 1830 1831 static int isp1362_bus_resume(struct usb_hcd *hcd) 1832 { 1833 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 1834 u32 port; 1835 unsigned long flags; 1836 int status = -EINPROGRESS; 1837 1838 if (time_before(jiffies, isp1362_hcd->next_statechange)) 1839 msleep(5); 1840 1841 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1842 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); 1843 pr_info("%s: HCCONTROL: %08x\n", __func__, isp1362_hcd->hc_control); 1844 if (hcd->state == HC_STATE_RESUMING) { 1845 pr_warn("%s: duplicate resume\n", __func__); 1846 status = 0; 1847 } else 1848 switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { 1849 case OHCI_USB_SUSPEND: 1850 DBG(0, "%s: resume root hub\n", __func__); 1851 isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; 1852 isp1362_hcd->hc_control |= OHCI_USB_RESUME; 1853 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1854 break; 1855 case OHCI_USB_RESUME: 1856 /* HCFS changes sometime after INTR_RD */ 1857 DBG(0, "%s: remote wakeup\n", __func__); 1858 break; 1859 case OHCI_USB_OPER: 1860 DBG(0, "%s: odd resume\n", __func__); 1861 status = 0; 1862 hcd->self.root_hub->dev.power.power_state = PMSG_ON; 1863 break; 1864 default: /* RESET, we lost power */ 1865 DBG(0, "%s: root hub hardware reset\n", __func__); 1866 status = -EBUSY; 1867 } 1868 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1869 if (status == -EBUSY) { 1870 DBG(0, "%s: Restarting HC\n", __func__); 1871 isp1362_hc_stop(hcd); 1872 return isp1362_hc_start(hcd); 1873 } 1874 if (status != -EINPROGRESS) 1875 return status; 1876 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1877 port = isp1362_read_reg32(isp1362_hcd, HCRHDESCA) & RH_A_NDP; 1878 while (port--) { 1879 u32 stat = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + port); 1880 1881 /* force global, not selective, resume */ 1882 if (!(stat & RH_PS_PSS)) { 1883 DBG(0, "%s: Not Resuming RH port %d\n", __func__, port); 1884 continue; 1885 } 1886 DBG(0, "%s: Resuming RH port %d\n", __func__, port); 1887 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + port, RH_PS_POCI); 1888 } 1889 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1890 1891 /* Some controllers (lucent) need extra-long delays */ 1892 hcd->state = HC_STATE_RESUMING; 1893 mdelay(20 /* usb 11.5.1.10 */ + 15); 1894 1895 isp1362_hcd->hc_control = OHCI_USB_OPER; 1896 spin_lock_irqsave(&isp1362_hcd->lock, flags); 1897 isp1362_show_reg(isp1362_hcd, HCCONTROL); 1898 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 1899 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 1900 /* TRSMRCY */ 1901 msleep(10); 1902 1903 /* keep it alive for ~5x suspend + resume costs */ 1904 isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(250); 1905 1906 hcd->self.root_hub->dev.power.power_state = PMSG_ON; 1907 hcd->state = HC_STATE_RUNNING; 1908 return 0; 1909 } 1910 #else 1911 #define isp1362_bus_suspend NULL 1912 #define isp1362_bus_resume NULL 1913 #endif 1914 1915 /*-------------------------------------------------------------------------*/ 1916 1917 static void dump_irq(struct seq_file *s, char *label, u16 mask) 1918 { 1919 seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask, 1920 mask & HCuPINT_CLKRDY ? " clkrdy" : "", 1921 mask & HCuPINT_SUSP ? " susp" : "", 1922 mask & HCuPINT_OPR ? " opr" : "", 1923 mask & HCuPINT_EOT ? " eot" : "", 1924 mask & HCuPINT_ATL ? " atl" : "", 1925 mask & HCuPINT_SOF ? " sof" : ""); 1926 } 1927 1928 static void dump_int(struct seq_file *s, char *label, u32 mask) 1929 { 1930 seq_printf(s, "%-15s %08x%s%s%s%s%s%s%s\n", label, mask, 1931 mask & OHCI_INTR_MIE ? " MIE" : "", 1932 mask & OHCI_INTR_RHSC ? " rhsc" : "", 1933 mask & OHCI_INTR_FNO ? " fno" : "", 1934 mask & OHCI_INTR_UE ? " ue" : "", 1935 mask & OHCI_INTR_RD ? " rd" : "", 1936 mask & OHCI_INTR_SF ? " sof" : "", 1937 mask & OHCI_INTR_SO ? " so" : ""); 1938 } 1939 1940 static void dump_ctrl(struct seq_file *s, char *label, u32 mask) 1941 { 1942 seq_printf(s, "%-15s %08x%s%s%s\n", label, mask, 1943 mask & OHCI_CTRL_RWC ? " rwc" : "", 1944 mask & OHCI_CTRL_RWE ? " rwe" : "", 1945 ({ 1946 char *hcfs; 1947 switch (mask & OHCI_CTRL_HCFS) { 1948 case OHCI_USB_OPER: 1949 hcfs = " oper"; 1950 break; 1951 case OHCI_USB_RESET: 1952 hcfs = " reset"; 1953 break; 1954 case OHCI_USB_RESUME: 1955 hcfs = " resume"; 1956 break; 1957 case OHCI_USB_SUSPEND: 1958 hcfs = " suspend"; 1959 break; 1960 default: 1961 hcfs = " ?"; 1962 } 1963 hcfs; 1964 })); 1965 } 1966 1967 static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd) 1968 { 1969 seq_printf(s, "HCREVISION [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCREVISION), 1970 isp1362_read_reg32(isp1362_hcd, HCREVISION)); 1971 seq_printf(s, "HCCONTROL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCONTROL), 1972 isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 1973 seq_printf(s, "HCCMDSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCMDSTAT), 1974 isp1362_read_reg32(isp1362_hcd, HCCMDSTAT)); 1975 seq_printf(s, "HCINTSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTSTAT), 1976 isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 1977 seq_printf(s, "HCINTENB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTENB), 1978 isp1362_read_reg32(isp1362_hcd, HCINTENB)); 1979 seq_printf(s, "HCFMINTVL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMINTVL), 1980 isp1362_read_reg32(isp1362_hcd, HCFMINTVL)); 1981 seq_printf(s, "HCFMREM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMREM), 1982 isp1362_read_reg32(isp1362_hcd, HCFMREM)); 1983 seq_printf(s, "HCFMNUM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMNUM), 1984 isp1362_read_reg32(isp1362_hcd, HCFMNUM)); 1985 seq_printf(s, "HCLSTHRESH [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCLSTHRESH), 1986 isp1362_read_reg32(isp1362_hcd, HCLSTHRESH)); 1987 seq_printf(s, "HCRHDESCA [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCA), 1988 isp1362_read_reg32(isp1362_hcd, HCRHDESCA)); 1989 seq_printf(s, "HCRHDESCB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCB), 1990 isp1362_read_reg32(isp1362_hcd, HCRHDESCB)); 1991 seq_printf(s, "HCRHSTATUS [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHSTATUS), 1992 isp1362_read_reg32(isp1362_hcd, HCRHSTATUS)); 1993 seq_printf(s, "HCRHPORT1 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT1), 1994 isp1362_read_reg32(isp1362_hcd, HCRHPORT1)); 1995 seq_printf(s, "HCRHPORT2 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT2), 1996 isp1362_read_reg32(isp1362_hcd, HCRHPORT2)); 1997 seq_printf(s, "\n"); 1998 seq_printf(s, "HCHWCFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCHWCFG), 1999 isp1362_read_reg16(isp1362_hcd, HCHWCFG)); 2000 seq_printf(s, "HCDMACFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCDMACFG), 2001 isp1362_read_reg16(isp1362_hcd, HCDMACFG)); 2002 seq_printf(s, "HCXFERCTR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCXFERCTR), 2003 isp1362_read_reg16(isp1362_hcd, HCXFERCTR)); 2004 seq_printf(s, "HCuPINT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINT), 2005 isp1362_read_reg16(isp1362_hcd, HCuPINT)); 2006 seq_printf(s, "HCuPINTENB [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINTENB), 2007 isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); 2008 seq_printf(s, "HCCHIPID [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCCHIPID), 2009 isp1362_read_reg16(isp1362_hcd, HCCHIPID)); 2010 seq_printf(s, "HCSCRATCH [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCSCRATCH), 2011 isp1362_read_reg16(isp1362_hcd, HCSCRATCH)); 2012 seq_printf(s, "HCBUFSTAT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCBUFSTAT), 2013 isp1362_read_reg16(isp1362_hcd, HCBUFSTAT)); 2014 seq_printf(s, "HCDIRADDR [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCDIRADDR), 2015 isp1362_read_reg32(isp1362_hcd, HCDIRADDR)); 2016 #if 0 2017 seq_printf(s, "HCDIRDATA [%02x] %04x\n", ISP1362_REG_NO(HCDIRDATA), 2018 isp1362_read_reg16(isp1362_hcd, HCDIRDATA)); 2019 #endif 2020 seq_printf(s, "HCISTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLBUFSZ), 2021 isp1362_read_reg16(isp1362_hcd, HCISTLBUFSZ)); 2022 seq_printf(s, "HCISTLRATE [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLRATE), 2023 isp1362_read_reg16(isp1362_hcd, HCISTLRATE)); 2024 seq_printf(s, "\n"); 2025 seq_printf(s, "HCINTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBUFSZ), 2026 isp1362_read_reg16(isp1362_hcd, HCINTLBUFSZ)); 2027 seq_printf(s, "HCINTLBLKSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBLKSZ), 2028 isp1362_read_reg16(isp1362_hcd, HCINTLBLKSZ)); 2029 seq_printf(s, "HCINTLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLDONE), 2030 isp1362_read_reg32(isp1362_hcd, HCINTLDONE)); 2031 seq_printf(s, "HCINTLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLSKIP), 2032 isp1362_read_reg32(isp1362_hcd, HCINTLSKIP)); 2033 seq_printf(s, "HCINTLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLLAST), 2034 isp1362_read_reg32(isp1362_hcd, HCINTLLAST)); 2035 seq_printf(s, "HCINTLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLCURR), 2036 isp1362_read_reg16(isp1362_hcd, HCINTLCURR)); 2037 seq_printf(s, "\n"); 2038 seq_printf(s, "HCATLBUFSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBUFSZ), 2039 isp1362_read_reg16(isp1362_hcd, HCATLBUFSZ)); 2040 seq_printf(s, "HCATLBLKSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBLKSZ), 2041 isp1362_read_reg16(isp1362_hcd, HCATLBLKSZ)); 2042 #if 0 2043 seq_printf(s, "HCATLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDONE), 2044 isp1362_read_reg32(isp1362_hcd, HCATLDONE)); 2045 #endif 2046 seq_printf(s, "HCATLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLSKIP), 2047 isp1362_read_reg32(isp1362_hcd, HCATLSKIP)); 2048 seq_printf(s, "HCATLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLLAST), 2049 isp1362_read_reg32(isp1362_hcd, HCATLLAST)); 2050 seq_printf(s, "HCATLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLCURR), 2051 isp1362_read_reg16(isp1362_hcd, HCATLCURR)); 2052 seq_printf(s, "\n"); 2053 seq_printf(s, "HCATLDTC [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTC), 2054 isp1362_read_reg16(isp1362_hcd, HCATLDTC)); 2055 seq_printf(s, "HCATLDTCTO [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTCTO), 2056 isp1362_read_reg16(isp1362_hcd, HCATLDTCTO)); 2057 } 2058 2059 static int isp1362_show(struct seq_file *s, void *unused) 2060 { 2061 struct isp1362_hcd *isp1362_hcd = s->private; 2062 struct isp1362_ep *ep; 2063 int i; 2064 2065 seq_printf(s, "%s\n%s version %s\n", 2066 isp1362_hcd_to_hcd(isp1362_hcd)->product_desc, hcd_name, DRIVER_VERSION); 2067 2068 /* collect statistics to help estimate potential win for 2069 * DMA engines that care about alignment (PXA) 2070 */ 2071 seq_printf(s, "alignment: 16b/%ld 8b/%ld 4b/%ld 2b/%ld 1b/%ld\n", 2072 isp1362_hcd->stat16, isp1362_hcd->stat8, isp1362_hcd->stat4, 2073 isp1362_hcd->stat2, isp1362_hcd->stat1); 2074 seq_printf(s, "max # ptds in ATL fifo: %d\n", isp1362_hcd->atl_queue.stat_maxptds); 2075 seq_printf(s, "max # ptds in INTL fifo: %d\n", isp1362_hcd->intl_queue.stat_maxptds); 2076 seq_printf(s, "max # ptds in ISTL fifo: %d\n", 2077 max(isp1362_hcd->istl_queue[0] .stat_maxptds, 2078 isp1362_hcd->istl_queue[1] .stat_maxptds)); 2079 2080 /* FIXME: don't show the following in suspended state */ 2081 spin_lock_irq(&isp1362_hcd->lock); 2082 2083 dump_irq(s, "hc_irq_enable", isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); 2084 dump_irq(s, "hc_irq_status", isp1362_read_reg16(isp1362_hcd, HCuPINT)); 2085 dump_int(s, "ohci_int_enable", isp1362_read_reg32(isp1362_hcd, HCINTENB)); 2086 dump_int(s, "ohci_int_status", isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); 2087 dump_ctrl(s, "ohci_control", isp1362_read_reg32(isp1362_hcd, HCCONTROL)); 2088 2089 for (i = 0; i < NUM_ISP1362_IRQS; i++) 2090 if (isp1362_hcd->irq_stat[i]) 2091 seq_printf(s, "%-15s: %d\n", 2092 ISP1362_INT_NAME(i), isp1362_hcd->irq_stat[i]); 2093 2094 dump_regs(s, isp1362_hcd); 2095 list_for_each_entry(ep, &isp1362_hcd->async, schedule) { 2096 struct urb *urb; 2097 2098 seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, ep->epnum, 2099 ({ 2100 char *s; 2101 switch (ep->nextpid) { 2102 case USB_PID_IN: 2103 s = "in"; 2104 break; 2105 case USB_PID_OUT: 2106 s = "out"; 2107 break; 2108 case USB_PID_SETUP: 2109 s = "setup"; 2110 break; 2111 case USB_PID_ACK: 2112 s = "status"; 2113 break; 2114 default: 2115 s = "?"; 2116 break; 2117 } 2118 s;}), ep->maxpacket) ; 2119 list_for_each_entry(urb, &ep->hep->urb_list, urb_list) { 2120 seq_printf(s, " urb%p, %d/%d\n", urb, 2121 urb->actual_length, 2122 urb->transfer_buffer_length); 2123 } 2124 } 2125 if (!list_empty(&isp1362_hcd->async)) 2126 seq_printf(s, "\n"); 2127 dump_ptd_queue(&isp1362_hcd->atl_queue); 2128 2129 seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE); 2130 2131 list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { 2132 seq_printf(s, "branch:%2d load:%3d PTD[%d] $%04x:\n", ep->branch, 2133 isp1362_hcd->load[ep->branch], ep->ptd_index, ep->ptd_offset); 2134 2135 seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", 2136 ep->interval, ep, 2137 (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", 2138 ep->udev->devnum, ep->epnum, 2139 (ep->epnum == 0) ? "" : 2140 ((ep->nextpid == USB_PID_IN) ? 2141 "in" : "out"), ep->maxpacket); 2142 } 2143 dump_ptd_queue(&isp1362_hcd->intl_queue); 2144 2145 seq_printf(s, "ISO:\n"); 2146 2147 list_for_each_entry(ep, &isp1362_hcd->isoc, schedule) { 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 2157 spin_unlock_irq(&isp1362_hcd->lock); 2158 seq_printf(s, "\n"); 2159 2160 return 0; 2161 } 2162 DEFINE_SHOW_ATTRIBUTE(isp1362); 2163 2164 /* expect just one isp1362_hcd per system */ 2165 static void create_debug_file(struct isp1362_hcd *isp1362_hcd) 2166 { 2167 debugfs_create_file("isp1362", S_IRUGO, usb_debug_root, isp1362_hcd, 2168 &isp1362_fops); 2169 } 2170 2171 static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) 2172 { 2173 debugfs_lookup_and_remove("isp1362", usb_debug_root); 2174 } 2175 2176 /*-------------------------------------------------------------------------*/ 2177 2178 static void __isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) 2179 { 2180 int tmp = 20; 2181 2182 isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC); 2183 isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR); 2184 while (--tmp) { 2185 mdelay(1); 2186 if (!(isp1362_read_reg32(isp1362_hcd, HCCMDSTAT) & OHCI_HCR)) 2187 break; 2188 } 2189 if (!tmp) 2190 pr_err("Software reset timeout\n"); 2191 } 2192 2193 static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) 2194 { 2195 unsigned long flags; 2196 2197 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2198 __isp1362_sw_reset(isp1362_hcd); 2199 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2200 } 2201 2202 static int isp1362_mem_config(struct usb_hcd *hcd) 2203 { 2204 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2205 unsigned long flags; 2206 u32 total; 2207 u16 istl_size = ISP1362_ISTL_BUFSIZE; 2208 u16 intl_blksize = ISP1362_INTL_BLKSIZE + PTD_HEADER_SIZE; 2209 u16 intl_size = ISP1362_INTL_BUFFERS * intl_blksize; 2210 u16 atl_blksize = ISP1362_ATL_BLKSIZE + PTD_HEADER_SIZE; 2211 u16 atl_buffers = (ISP1362_BUF_SIZE - (istl_size + intl_size)) / atl_blksize; 2212 u16 atl_size; 2213 int i; 2214 2215 WARN_ON(istl_size & 3); 2216 WARN_ON(atl_blksize & 3); 2217 WARN_ON(intl_blksize & 3); 2218 WARN_ON(atl_blksize < PTD_HEADER_SIZE); 2219 WARN_ON(intl_blksize < PTD_HEADER_SIZE); 2220 2221 BUG_ON((unsigned)ISP1362_INTL_BUFFERS > 32); 2222 if (atl_buffers > 32) 2223 atl_buffers = 32; 2224 atl_size = atl_buffers * atl_blksize; 2225 total = atl_size + intl_size + istl_size; 2226 dev_info(hcd->self.controller, "ISP1362 Memory usage:\n"); 2227 dev_info(hcd->self.controller, " ISTL: 2 * %4d: %4d @ $%04x:$%04x\n", 2228 istl_size / 2, istl_size, 0, istl_size / 2); 2229 dev_info(hcd->self.controller, " INTL: %4d * (%3zu+8): %4d @ $%04x\n", 2230 ISP1362_INTL_BUFFERS, intl_blksize - PTD_HEADER_SIZE, 2231 intl_size, istl_size); 2232 dev_info(hcd->self.controller, " ATL : %4d * (%3zu+8): %4d @ $%04x\n", 2233 atl_buffers, atl_blksize - PTD_HEADER_SIZE, 2234 atl_size, istl_size + intl_size); 2235 dev_info(hcd->self.controller, " USED/FREE: %4d %4d\n", total, 2236 ISP1362_BUF_SIZE - total); 2237 2238 if (total > ISP1362_BUF_SIZE) { 2239 dev_err(hcd->self.controller, "%s: Memory requested: %d, available %d\n", 2240 __func__, total, ISP1362_BUF_SIZE); 2241 return -ENOMEM; 2242 } 2243 2244 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2245 2246 for (i = 0; i < 2; i++) { 2247 isp1362_hcd->istl_queue[i].buf_start = i * istl_size / 2, 2248 isp1362_hcd->istl_queue[i].buf_size = istl_size / 2; 2249 isp1362_hcd->istl_queue[i].blk_size = 4; 2250 INIT_LIST_HEAD(&isp1362_hcd->istl_queue[i].active); 2251 snprintf(isp1362_hcd->istl_queue[i].name, 2252 sizeof(isp1362_hcd->istl_queue[i].name), "ISTL%d", i); 2253 DBG(3, "%s: %5s buf $%04x %d\n", __func__, 2254 isp1362_hcd->istl_queue[i].name, 2255 isp1362_hcd->istl_queue[i].buf_start, 2256 isp1362_hcd->istl_queue[i].buf_size); 2257 } 2258 isp1362_write_reg16(isp1362_hcd, HCISTLBUFSZ, istl_size / 2); 2259 2260 isp1362_hcd->intl_queue.buf_start = istl_size; 2261 isp1362_hcd->intl_queue.buf_size = intl_size; 2262 isp1362_hcd->intl_queue.buf_count = ISP1362_INTL_BUFFERS; 2263 isp1362_hcd->intl_queue.blk_size = intl_blksize; 2264 isp1362_hcd->intl_queue.buf_avail = isp1362_hcd->intl_queue.buf_count; 2265 isp1362_hcd->intl_queue.skip_map = ~0; 2266 INIT_LIST_HEAD(&isp1362_hcd->intl_queue.active); 2267 2268 isp1362_write_reg16(isp1362_hcd, HCINTLBUFSZ, 2269 isp1362_hcd->intl_queue.buf_size); 2270 isp1362_write_reg16(isp1362_hcd, HCINTLBLKSZ, 2271 isp1362_hcd->intl_queue.blk_size - PTD_HEADER_SIZE); 2272 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); 2273 isp1362_write_reg32(isp1362_hcd, HCINTLLAST, 2274 1 << (ISP1362_INTL_BUFFERS - 1)); 2275 2276 isp1362_hcd->atl_queue.buf_start = istl_size + intl_size; 2277 isp1362_hcd->atl_queue.buf_size = atl_size; 2278 isp1362_hcd->atl_queue.buf_count = atl_buffers; 2279 isp1362_hcd->atl_queue.blk_size = atl_blksize; 2280 isp1362_hcd->atl_queue.buf_avail = isp1362_hcd->atl_queue.buf_count; 2281 isp1362_hcd->atl_queue.skip_map = ~0; 2282 INIT_LIST_HEAD(&isp1362_hcd->atl_queue.active); 2283 2284 isp1362_write_reg16(isp1362_hcd, HCATLBUFSZ, 2285 isp1362_hcd->atl_queue.buf_size); 2286 isp1362_write_reg16(isp1362_hcd, HCATLBLKSZ, 2287 isp1362_hcd->atl_queue.blk_size - PTD_HEADER_SIZE); 2288 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); 2289 isp1362_write_reg32(isp1362_hcd, HCATLLAST, 2290 1 << (atl_buffers - 1)); 2291 2292 snprintf(isp1362_hcd->atl_queue.name, 2293 sizeof(isp1362_hcd->atl_queue.name), "ATL"); 2294 snprintf(isp1362_hcd->intl_queue.name, 2295 sizeof(isp1362_hcd->intl_queue.name), "INTL"); 2296 DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, 2297 isp1362_hcd->intl_queue.name, 2298 isp1362_hcd->intl_queue.buf_start, 2299 ISP1362_INTL_BUFFERS, isp1362_hcd->intl_queue.blk_size, 2300 isp1362_hcd->intl_queue.buf_size); 2301 DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, 2302 isp1362_hcd->atl_queue.name, 2303 isp1362_hcd->atl_queue.buf_start, 2304 atl_buffers, isp1362_hcd->atl_queue.blk_size, 2305 isp1362_hcd->atl_queue.buf_size); 2306 2307 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2308 2309 return 0; 2310 } 2311 2312 static int isp1362_hc_reset(struct usb_hcd *hcd) 2313 { 2314 int ret = 0; 2315 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2316 unsigned long t; 2317 unsigned long timeout = 100; 2318 unsigned long flags; 2319 int clkrdy = 0; 2320 2321 pr_debug("%s:\n", __func__); 2322 2323 if (isp1362_hcd->board && isp1362_hcd->board->reset) { 2324 isp1362_hcd->board->reset(hcd->self.controller, 1); 2325 msleep(20); 2326 if (isp1362_hcd->board->clock) 2327 isp1362_hcd->board->clock(hcd->self.controller, 1); 2328 isp1362_hcd->board->reset(hcd->self.controller, 0); 2329 } else 2330 isp1362_sw_reset(isp1362_hcd); 2331 2332 /* chip has been reset. First we need to see a clock */ 2333 t = jiffies + msecs_to_jiffies(timeout); 2334 while (!clkrdy && time_before_eq(jiffies, t)) { 2335 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2336 clkrdy = isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_CLKRDY; 2337 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2338 if (!clkrdy) 2339 msleep(4); 2340 } 2341 2342 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2343 isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_CLKRDY); 2344 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2345 if (!clkrdy) { 2346 pr_err("Clock not ready after %lums\n", timeout); 2347 ret = -ENODEV; 2348 } 2349 return ret; 2350 } 2351 2352 static void isp1362_hc_stop(struct usb_hcd *hcd) 2353 { 2354 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2355 unsigned long flags; 2356 u32 tmp; 2357 2358 pr_debug("%s:\n", __func__); 2359 2360 del_timer_sync(&hcd->rh_timer); 2361 2362 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2363 2364 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 2365 2366 /* Switch off power for all ports */ 2367 tmp = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); 2368 tmp &= ~(RH_A_NPS | RH_A_PSM); 2369 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, tmp); 2370 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); 2371 2372 /* Reset the chip */ 2373 if (isp1362_hcd->board && isp1362_hcd->board->reset) 2374 isp1362_hcd->board->reset(hcd->self.controller, 1); 2375 else 2376 __isp1362_sw_reset(isp1362_hcd); 2377 2378 if (isp1362_hcd->board && isp1362_hcd->board->clock) 2379 isp1362_hcd->board->clock(hcd->self.controller, 0); 2380 2381 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2382 } 2383 2384 #ifdef CHIP_BUFFER_TEST 2385 static int isp1362_chip_test(struct isp1362_hcd *isp1362_hcd) 2386 { 2387 int ret = 0; 2388 u16 *ref; 2389 unsigned long flags; 2390 2391 ref = kmalloc(2 * ISP1362_BUF_SIZE, GFP_KERNEL); 2392 if (ref) { 2393 int offset; 2394 u16 *tst = &ref[ISP1362_BUF_SIZE / 2]; 2395 2396 for (offset = 0; offset < ISP1362_BUF_SIZE / 2; offset++) { 2397 ref[offset] = ~offset; 2398 tst[offset] = offset; 2399 } 2400 2401 for (offset = 0; offset < 4; offset++) { 2402 int j; 2403 2404 for (j = 0; j < 8; j++) { 2405 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2406 isp1362_write_buffer(isp1362_hcd, (u8 *)ref + offset, 0, j); 2407 isp1362_read_buffer(isp1362_hcd, (u8 *)tst + offset, 0, j); 2408 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2409 2410 if (memcmp(ref, tst, j)) { 2411 ret = -ENODEV; 2412 pr_err("%s: memory check with %d byte offset %d failed\n", 2413 __func__, j, offset); 2414 dump_data((u8 *)ref + offset, j); 2415 dump_data((u8 *)tst + offset, j); 2416 } 2417 } 2418 } 2419 2420 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2421 isp1362_write_buffer(isp1362_hcd, ref, 0, ISP1362_BUF_SIZE); 2422 isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2423 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2424 2425 if (memcmp(ref, tst, ISP1362_BUF_SIZE)) { 2426 ret = -ENODEV; 2427 pr_err("%s: memory check failed\n", __func__); 2428 dump_data((u8 *)tst, ISP1362_BUF_SIZE / 2); 2429 } 2430 2431 for (offset = 0; offset < 256; offset++) { 2432 int test_size = 0; 2433 2434 yield(); 2435 2436 memset(tst, 0, ISP1362_BUF_SIZE); 2437 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2438 isp1362_write_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2439 isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); 2440 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2441 if (memcmp(tst, tst + (ISP1362_BUF_SIZE / (2 * sizeof(*tst))), 2442 ISP1362_BUF_SIZE / 2)) { 2443 pr_err("%s: Failed to clear buffer\n", __func__); 2444 dump_data((u8 *)tst, ISP1362_BUF_SIZE); 2445 break; 2446 } 2447 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2448 isp1362_write_buffer(isp1362_hcd, ref, offset * 2, PTD_HEADER_SIZE); 2449 isp1362_write_buffer(isp1362_hcd, ref + PTD_HEADER_SIZE / sizeof(*ref), 2450 offset * 2 + PTD_HEADER_SIZE, test_size); 2451 isp1362_read_buffer(isp1362_hcd, tst, offset * 2, 2452 PTD_HEADER_SIZE + test_size); 2453 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2454 if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { 2455 dump_data(((u8 *)ref) + offset, PTD_HEADER_SIZE + test_size); 2456 dump_data((u8 *)tst, PTD_HEADER_SIZE + test_size); 2457 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2458 isp1362_read_buffer(isp1362_hcd, tst, offset * 2, 2459 PTD_HEADER_SIZE + test_size); 2460 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2461 if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { 2462 ret = -ENODEV; 2463 pr_err("%s: memory check with offset %02x failed\n", 2464 __func__, offset); 2465 break; 2466 } 2467 pr_warn("%s: memory check with offset %02x ok after second read\n", 2468 __func__, offset); 2469 } 2470 } 2471 kfree(ref); 2472 } 2473 return ret; 2474 } 2475 #endif 2476 2477 static int isp1362_hc_start(struct usb_hcd *hcd) 2478 { 2479 int ret; 2480 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2481 struct isp1362_platform_data *board = isp1362_hcd->board; 2482 u16 hwcfg; 2483 u16 chipid; 2484 unsigned long flags; 2485 2486 pr_debug("%s:\n", __func__); 2487 2488 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2489 chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID); 2490 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2491 2492 if ((chipid & HCCHIPID_MASK) != HCCHIPID_MAGIC) { 2493 pr_err("%s: Invalid chip ID %04x\n", __func__, chipid); 2494 return -ENODEV; 2495 } 2496 2497 #ifdef CHIP_BUFFER_TEST 2498 ret = isp1362_chip_test(isp1362_hcd); 2499 if (ret) 2500 return -ENODEV; 2501 #endif 2502 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2503 /* clear interrupt status and disable all interrupt sources */ 2504 isp1362_write_reg16(isp1362_hcd, HCuPINT, 0xff); 2505 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); 2506 2507 /* HW conf */ 2508 hwcfg = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); 2509 if (board->sel15Kres) 2510 hwcfg |= HCHWCFG_PULLDOWN_DS2 | 2511 ((MAX_ROOT_PORTS > 1) ? HCHWCFG_PULLDOWN_DS1 : 0); 2512 if (board->clknotstop) 2513 hwcfg |= HCHWCFG_CLKNOTSTOP; 2514 if (board->oc_enable) 2515 hwcfg |= HCHWCFG_ANALOG_OC; 2516 if (board->int_act_high) 2517 hwcfg |= HCHWCFG_INT_POL; 2518 if (board->int_edge_triggered) 2519 hwcfg |= HCHWCFG_INT_TRIGGER; 2520 if (board->dreq_act_high) 2521 hwcfg |= HCHWCFG_DREQ_POL; 2522 if (board->dack_act_high) 2523 hwcfg |= HCHWCFG_DACK_POL; 2524 isp1362_write_reg16(isp1362_hcd, HCHWCFG, hwcfg); 2525 isp1362_show_reg(isp1362_hcd, HCHWCFG); 2526 isp1362_write_reg16(isp1362_hcd, HCDMACFG, 0); 2527 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2528 2529 ret = isp1362_mem_config(hcd); 2530 if (ret) 2531 return ret; 2532 2533 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2534 2535 /* Root hub conf */ 2536 isp1362_hcd->rhdesca = 0; 2537 if (board->no_power_switching) 2538 isp1362_hcd->rhdesca |= RH_A_NPS; 2539 if (board->power_switching_mode) 2540 isp1362_hcd->rhdesca |= RH_A_PSM; 2541 if (board->potpg) 2542 isp1362_hcd->rhdesca |= (board->potpg << 24) & RH_A_POTPGT; 2543 else 2544 isp1362_hcd->rhdesca |= (25 << 24) & RH_A_POTPGT; 2545 2546 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca & ~RH_A_OCPM); 2547 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca | RH_A_OCPM); 2548 isp1362_hcd->rhdesca = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); 2549 2550 isp1362_hcd->rhdescb = RH_B_PPCM; 2551 isp1362_write_reg32(isp1362_hcd, HCRHDESCB, isp1362_hcd->rhdescb); 2552 isp1362_hcd->rhdescb = isp1362_read_reg32(isp1362_hcd, HCRHDESCB); 2553 2554 isp1362_read_reg32(isp1362_hcd, HCFMINTVL); 2555 isp1362_write_reg32(isp1362_hcd, HCFMINTVL, (FSMP(FI) << 16) | FI); 2556 isp1362_write_reg32(isp1362_hcd, HCLSTHRESH, LSTHRESH); 2557 2558 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2559 2560 isp1362_hcd->hc_control = OHCI_USB_OPER; 2561 hcd->state = HC_STATE_RUNNING; 2562 2563 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2564 /* Set up interrupts */ 2565 isp1362_hcd->intenb = OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE; 2566 isp1362_hcd->intenb |= OHCI_INTR_RD; 2567 isp1362_hcd->irqenb = HCuPINT_OPR | HCuPINT_SUSP; 2568 isp1362_write_reg32(isp1362_hcd, HCINTENB, isp1362_hcd->intenb); 2569 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); 2570 2571 /* Go operational */ 2572 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); 2573 /* enable global power */ 2574 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC | RH_HS_DRWE); 2575 2576 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2577 2578 return 0; 2579 } 2580 2581 /*-------------------------------------------------------------------------*/ 2582 2583 static const struct hc_driver isp1362_hc_driver = { 2584 .description = hcd_name, 2585 .product_desc = "ISP1362 Host Controller", 2586 .hcd_priv_size = sizeof(struct isp1362_hcd), 2587 2588 .irq = isp1362_irq, 2589 .flags = HCD_USB11 | HCD_MEMORY, 2590 2591 .reset = isp1362_hc_reset, 2592 .start = isp1362_hc_start, 2593 .stop = isp1362_hc_stop, 2594 2595 .urb_enqueue = isp1362_urb_enqueue, 2596 .urb_dequeue = isp1362_urb_dequeue, 2597 .endpoint_disable = isp1362_endpoint_disable, 2598 2599 .get_frame_number = isp1362_get_frame, 2600 2601 .hub_status_data = isp1362_hub_status_data, 2602 .hub_control = isp1362_hub_control, 2603 .bus_suspend = isp1362_bus_suspend, 2604 .bus_resume = isp1362_bus_resume, 2605 }; 2606 2607 /*-------------------------------------------------------------------------*/ 2608 2609 static int isp1362_remove(struct platform_device *pdev) 2610 { 2611 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2612 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2613 2614 remove_debug_file(isp1362_hcd); 2615 DBG(0, "%s: Removing HCD\n", __func__); 2616 usb_remove_hcd(hcd); 2617 DBG(0, "%s: put_hcd\n", __func__); 2618 usb_put_hcd(hcd); 2619 DBG(0, "%s: Done\n", __func__); 2620 2621 return 0; 2622 } 2623 2624 static int isp1362_probe(struct platform_device *pdev) 2625 { 2626 struct usb_hcd *hcd; 2627 struct isp1362_hcd *isp1362_hcd; 2628 struct resource *data, *irq_res; 2629 void __iomem *addr_reg; 2630 void __iomem *data_reg; 2631 int irq; 2632 int retval = 0; 2633 unsigned int irq_flags = 0; 2634 2635 if (usb_disabled()) 2636 return -ENODEV; 2637 2638 /* basic sanity checks first. board-specific init logic should 2639 * have initialized this the three resources and probably board 2640 * specific platform_data. we don't probe for IRQs, and do only 2641 * minimal sanity checking. 2642 */ 2643 if (pdev->num_resources < 3) 2644 return -ENODEV; 2645 2646 irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2647 if (!irq_res) 2648 return -ENODEV; 2649 2650 irq = irq_res->start; 2651 2652 addr_reg = devm_platform_ioremap_resource(pdev, 1); 2653 if (IS_ERR(addr_reg)) 2654 return PTR_ERR(addr_reg); 2655 2656 data = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2657 data_reg = devm_ioremap_resource(&pdev->dev, data); 2658 if (IS_ERR(data_reg)) 2659 return PTR_ERR(data_reg); 2660 2661 /* allocate and initialize hcd */ 2662 hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev)); 2663 if (!hcd) 2664 return -ENOMEM; 2665 2666 hcd->rsrc_start = data->start; 2667 isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2668 isp1362_hcd->data_reg = data_reg; 2669 isp1362_hcd->addr_reg = addr_reg; 2670 2671 isp1362_hcd->next_statechange = jiffies; 2672 spin_lock_init(&isp1362_hcd->lock); 2673 INIT_LIST_HEAD(&isp1362_hcd->async); 2674 INIT_LIST_HEAD(&isp1362_hcd->periodic); 2675 INIT_LIST_HEAD(&isp1362_hcd->isoc); 2676 INIT_LIST_HEAD(&isp1362_hcd->remove_list); 2677 isp1362_hcd->board = dev_get_platdata(&pdev->dev); 2678 #if USE_PLATFORM_DELAY 2679 if (!isp1362_hcd->board->delay) { 2680 dev_err(hcd->self.controller, "No platform delay function given\n"); 2681 retval = -ENODEV; 2682 goto err; 2683 } 2684 #endif 2685 2686 if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE) 2687 irq_flags |= IRQF_TRIGGER_RISING; 2688 if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE) 2689 irq_flags |= IRQF_TRIGGER_FALLING; 2690 if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL) 2691 irq_flags |= IRQF_TRIGGER_HIGH; 2692 if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL) 2693 irq_flags |= IRQF_TRIGGER_LOW; 2694 2695 retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_SHARED); 2696 if (retval != 0) 2697 goto err; 2698 device_wakeup_enable(hcd->self.controller); 2699 2700 dev_info(&pdev->dev, "%s, irq %d\n", hcd->product_desc, irq); 2701 2702 create_debug_file(isp1362_hcd); 2703 2704 return 0; 2705 2706 err: 2707 usb_put_hcd(hcd); 2708 2709 return retval; 2710 } 2711 2712 #ifdef CONFIG_PM 2713 static int isp1362_suspend(struct platform_device *pdev, pm_message_t state) 2714 { 2715 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2716 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2717 unsigned long flags; 2718 int retval = 0; 2719 2720 DBG(0, "%s: Suspending device\n", __func__); 2721 2722 if (state.event == PM_EVENT_FREEZE) { 2723 DBG(0, "%s: Suspending root hub\n", __func__); 2724 retval = isp1362_bus_suspend(hcd); 2725 } else { 2726 DBG(0, "%s: Suspending RH ports\n", __func__); 2727 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2728 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); 2729 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2730 } 2731 if (retval == 0) 2732 pdev->dev.power.power_state = state; 2733 return retval; 2734 } 2735 2736 static int isp1362_resume(struct platform_device *pdev) 2737 { 2738 struct usb_hcd *hcd = platform_get_drvdata(pdev); 2739 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); 2740 unsigned long flags; 2741 2742 DBG(0, "%s: Resuming\n", __func__); 2743 2744 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) { 2745 DBG(0, "%s: Resume RH ports\n", __func__); 2746 spin_lock_irqsave(&isp1362_hcd->lock, flags); 2747 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC); 2748 spin_unlock_irqrestore(&isp1362_hcd->lock, flags); 2749 return 0; 2750 } 2751 2752 pdev->dev.power.power_state = PMSG_ON; 2753 2754 return isp1362_bus_resume(isp1362_hcd_to_hcd(isp1362_hcd)); 2755 } 2756 #else 2757 #define isp1362_suspend NULL 2758 #define isp1362_resume NULL 2759 #endif 2760 2761 static struct platform_driver isp1362_driver = { 2762 .probe = isp1362_probe, 2763 .remove = isp1362_remove, 2764 2765 .suspend = isp1362_suspend, 2766 .resume = isp1362_resume, 2767 .driver = { 2768 .name = hcd_name, 2769 }, 2770 }; 2771 2772 module_platform_driver(isp1362_driver); 2773