git.maemo.org Git - kernel-power/blob - usbhost/drivers/usb/musb/musb_procfs.c

   1 /*
   2  * MUSB OTG driver debug support
   3  *
   4  * Copyright 2005 Mentor Graphics Corporation
   5  * Copyright (C) 2005-2006 by Texas Instruments
   6  * Copyright (C) 2006-2007 Nokia Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
  23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  25  * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  29  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #include <linux/kernel.h>
  36 #include <linux/proc_fs.h>
  37 #include <linux/seq_file.h>
  38 #include <linux/uaccess.h>      /* FIXME remove procfs writes */
  39 #include <mach/hardware.h>
  40 #include <asm/mach-types.h>
  41
  42 #include "musb_core.h"
  43
  44 #include "davinci.h"
  45
  46 extern unsigned musb_debug;
  47
  48 #ifdef CONFIG_USB_MUSB_HDRC_HCD
  49
  50 static int dump_qh(struct musb_qh *qh, char *buf, unsigned max)
  51 {
  52         int                             count;
  53         int                             tmp;
  54         struct usb_host_endpoint        *hep = qh->hep;
  55         struct urb                      *urb;
  56
  57         count = snprintf(buf, max, "    qh %p dev%d ep%d%s max%d\n",
  58                         qh, qh->dev->devnum, qh->epnum,
  59                         ({ char *s; switch (qh->type) {
  60                         case USB_ENDPOINT_XFER_BULK:
  61                                 s = "-bulk"; break;
  62                         case USB_ENDPOINT_XFER_INT:
  63                                 s = "-int"; break;
  64                         case USB_ENDPOINT_XFER_CONTROL:
  65                                 s = ""; break;
  66                         default:
  67                                 s = "iso"; break;
  68                         }; s; }),
  69                         qh->maxpacket);
  70         if (count <= 0)
  71                 return 0;
  72         buf += count;
  73         max -= count;
  74
  75         list_for_each_entry(urb, &hep->urb_list, urb_list) {
  76                 tmp = snprintf(buf, max, "\t%s urb %p %d/%d\n",
  77                                 usb_pipein(urb->pipe) ? "in" : "out",
  78                                 urb, urb->actual_length,
  79                                 urb->transfer_buffer_length);
  80                 if (tmp <= 0)
  81                         break;
  82                 tmp = min(tmp, (int)max);
  83                 count += tmp;
  84                 buf += tmp;
  85                 max -= tmp;
  86         }
  87         return count;
  88 }
  89
  90 static int
  91 dump_queue(struct list_head *q, char *buf, unsigned max)
  92 {
  93         int             count = 0;
  94         struct musb_qh  *qh;
  95
  96         list_for_each_entry(qh, q, ring) {
  97                 int     tmp;
  98
  99                 tmp = dump_qh(qh, buf, max);
 100                 if (tmp <= 0)
 101                         break;
 102                 tmp = min(tmp, (int)max);
 103                 count += tmp;
 104                 buf += tmp;
 105                 max -= tmp;
 106         }
 107         return count;
 108 }
 109
 110 #endif  /* HCD */
 111
 112 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 113 static int dump_ep(struct musb_ep *ep, char *buffer, unsigned max)
 114 {
 115         char            *buf = buffer;
 116         int             code = 0;
 117         void __iomem    *regs = ep->hw_ep->regs;
 118         char            *mode = "1buf";
 119
 120         if (ep->is_in) {
 121                 if (ep->hw_ep->tx_double_buffered)
 122                         mode = "2buf";
 123         } else {
 124                 if (ep->hw_ep->rx_double_buffered)
 125                         mode = "2buf";
 126         }
 127
 128         do {
 129                 struct usb_request      *req;
 130
 131                 code = snprintf(buf, max,
 132                                 "\n%s (hw%d): %s%s, csr %04x maxp %04x\n",
 133                                 ep->name, ep->current_epnum,
 134                                 mode, ep->dma ? " dma" : "",
 135                                 musb_readw(regs,
 136                                         (ep->is_in || !ep->current_epnum)
 137                                                 ? MUSB_TXCSR
 138                                                 : MUSB_RXCSR),
 139                                 musb_readw(regs, ep->is_in
 140                                                 ? MUSB_TXMAXP
 141                                                 : MUSB_RXMAXP)
 142                                 );
 143                 if (code <= 0)
 144                         break;
 145                 code = min(code, (int) max);
 146                 buf += code;
 147                 max -= code;
 148
 149                 if (cppi_ti_dma() && ep->current_epnum) {
 150                         unsigned        cppi = ep->current_epnum - 1;
 151                         void __iomem    *base = ep->musb->ctrl_base;
 152                         unsigned        off1 = cppi << 2;
 153                         void __iomem    *ram = base;
 154                         char            tmp[16];
 155
 156                         if (ep->is_in) {
 157                                 ram += DAVINCI_TXCPPI_STATERAM_OFFSET(cppi);
 158                                 tmp[0] = 0;
 159                         } else {
 160                                 ram += DAVINCI_RXCPPI_STATERAM_OFFSET(cppi);
 161                                 snprintf(tmp, sizeof tmp, "%d left, ",
 162                                         musb_readl(base,
 163                                         DAVINCI_RXCPPI_BUFCNT0_REG + off1));
 164                         }
 165
 166                         code = snprintf(buf, max, "%cX DMA%d: %s"
 167                                         "%08x %08x, %08x %08x; "
 168                                         "%08x %08x %08x .. %08x\n",
 169                                 ep->is_in ? 'T' : 'R',
 170                                 ep->current_epnum - 1, tmp,
 171                                 musb_readl(ram, 0 * 4),
 172                                 musb_readl(ram, 1 * 4),
 173                                 musb_readl(ram, 2 * 4),
 174                                 musb_readl(ram, 3 * 4),
 175                                 musb_readl(ram, 4 * 4),
 176                                 musb_readl(ram, 5 * 4),
 177                                 musb_readl(ram, 6 * 4),
 178                                 musb_readl(ram, 7 * 4));
 179                         if (code <= 0)
 180                                 break;
 181                         code = min(code, (int) max);
 182                         buf += code;
 183                         max -= code;
 184                 }
 185
 186                 if (list_empty(&ep->req_list)) {
 187                         code = snprintf(buf, max, "\t(queue empty)\n");
 188                         if (code <= 0)
 189                                 break;
 190                         code = min(code, (int) max);
 191                         buf += code;
 192                         max -= code;
 193                         break;
 194                 }
 195                 list_for_each_entry(req, &ep->req_list, list) {
 196                         code = snprintf(buf, max, "\treq %p, %s%s%d/%d\n",
 197                                         req,
 198                                         req->zero ? "zero, " : "",
 199                                         req->short_not_ok ? "!short, " : "",
 200                                         req->actual, req->length);
 201                         if (code <= 0)
 202                                 break;
 203                         code = min(code, (int) max);
 204                         buf += code;
 205                         max -= code;
 206                 }
 207         } while (0);
 208         return buf - buffer;
 209 }
 210 #endif
 211
 212 static int
 213 dump_end_info(struct musb *musb, u8 epnum, char *aBuffer, unsigned max)
 214 {
 215         int                     code = 0;
 216         char                    *buf = aBuffer;
 217         struct musb_hw_ep       *hw_ep = &musb->endpoints[epnum];
 218
 219         do {
 220                 musb_ep_select(musb->mregs, epnum);
 221 #ifdef CONFIG_USB_MUSB_HDRC_HCD
 222                 if (is_host_active(musb)) {
 223                         int             dump_rx, dump_tx;
 224                         void __iomem    *regs = hw_ep->regs;
 225
 226                         /* TEMPORARY (!) until we have a real periodic
 227                          * schedule tree ...
 228                          */
 229                         if (!epnum) {
 230                                 /* control is shared, uses RX queue
 231                                  * but (mostly) shadowed tx registers
 232                                  */
 233                                 dump_tx = !list_empty(&hw_ep->in_list);
 234                                 dump_rx = 0;
 235                         } else if (hw_ep == musb->bulk_ep) {
 236                                 dump_tx = !list_empty(&hw_ep->out_list);
 237                                 dump_rx = !list_empty(&hw_ep->in_list);
 238                         } else
 239                                 break;
 240                         /* END TEMPORARY */
 241
 242
 243                         if (dump_rx) {
 244                                 code = snprintf(buf, max,
 245                                         "\nRX%d: %s rxcsr %04x interval %02x "
 246                                         "max %04x type %02x; "
 247                                         "dev %d hub %d port %d"
 248                                         "\n",
 249                                         epnum,
 250                                         hw_ep->rx_double_buffered
 251                                                 ? "2buf" : "1buf",
 252                                         musb_readw(regs, MUSB_RXCSR),
 253                                         musb_readb(regs, MUSB_RXINTERVAL),
 254                                         musb_readw(regs, MUSB_RXMAXP),
 255                                         musb_readb(regs, MUSB_RXTYPE),
 256                                         /* FIXME:  assumes multipoint */
 257                                         musb_readb(musb->mregs,
 258                                                 MUSB_BUSCTL_OFFSET(epnum,
 259                                                 MUSB_RXFUNCADDR)),
 260                                         musb_readb(musb->mregs,
 261                                                 MUSB_BUSCTL_OFFSET(epnum,
 262                                                 MUSB_RXHUBADDR)),
 263                                         musb_readb(musb->mregs,
 264                                                 MUSB_BUSCTL_OFFSET(epnum,
 265                                                 MUSB_RXHUBPORT))
 266                                         );
 267                                 if (code <= 0)
 268                                         break;
 269                                 code = min(code, (int) max);
 270                                 buf += code;
 271                                 max -= code;
 272
 273                                 if (cppi_ti_dma()
 274                                                 && epnum
 275                                                 && hw_ep->rx_channel) {
 276                                         unsigned        cppi = epnum - 1;
 277                                         unsigned        off1 = cppi << 2;
 278                                         void __iomem    *base;
 279                                         void __iomem    *ram;
 280                                         char            tmp[16];
 281
 282                                         base = musb->ctrl_base;
 283                                         ram = DAVINCI_RXCPPI_STATERAM_OFFSET(
 284                                                         cppi) + base;
 285                                         snprintf(tmp, sizeof tmp, "%d left, ",
 286                                                 musb_readl(base,
 287                                                 DAVINCI_RXCPPI_BUFCNT0_REG
 288                                                                 + off1));
 289
 290                                         code = snprintf(buf, max,
 291                                                 "    rx dma%d: %s"
 292                                                 "%08x %08x, %08x %08x; "
 293                                                 "%08x %08x %08x .. %08x\n",
 294                                                 cppi, tmp,
 295                                                 musb_readl(ram, 0 * 4),
 296                                                 musb_readl(ram, 1 * 4),
 297                                                 musb_readl(ram, 2 * 4),
 298                                                 musb_readl(ram, 3 * 4),
 299                                                 musb_readl(ram, 4 * 4),
 300                                                 musb_readl(ram, 5 * 4),
 301                                                 musb_readl(ram, 6 * 4),
 302                                                 musb_readl(ram, 7 * 4));
 303                                         if (code <= 0)
 304                                                 break;
 305                                         code = min(code, (int) max);
 306                                         buf += code;
 307                                         max -= code;
 308                                 }
 309
 310                                 if (hw_ep == musb->bulk_ep
 311                                                 && !list_empty(
 312                                                         &hw_ep->in_list)) {
 313                                         code = dump_queue(&hw_ep->in_list,
 314                                                         buf, max);
 315                                         if (code <= 0)
 316                                                 break;
 317                                         code = min(code, (int) max);
 318                                         buf += code;
 319                                         max -= code;
 320                                 }
 321                         }
 322
 323                         if (dump_tx) {
 324                                 code = snprintf(buf, max,
 325                                         "\nTX%d: %s txcsr %04x interval %02x "
 326                                         "max %04x type %02x; "
 327                                         "dev %d hub %d port %d"
 328                                         "\n",
 329                                         epnum,
 330                                         hw_ep->tx_double_buffered
 331                                                 ? "2buf" : "1buf",
 332                                         musb_readw(regs, MUSB_TXCSR),
 333                                         musb_readb(regs, MUSB_TXINTERVAL),
 334                                         musb_readw(regs, MUSB_TXMAXP),
 335                                         musb_readb(regs, MUSB_TXTYPE),
 336                                         /* FIXME:  assumes multipoint */
 337                                         musb_readb(musb->mregs,
 338                                                 MUSB_BUSCTL_OFFSET(epnum,
 339                                                 MUSB_TXFUNCADDR)),
 340                                         musb_readb(musb->mregs,
 341                                                 MUSB_BUSCTL_OFFSET(epnum,
 342                                                 MUSB_TXHUBADDR)),
 343                                         musb_readb(musb->mregs,
 344                                                 MUSB_BUSCTL_OFFSET(epnum,
 345                                                 MUSB_TXHUBPORT))
 346                                         );
 347                                 if (code <= 0)
 348                                         break;
 349                                 code = min(code, (int) max);
 350                                 buf += code;
 351                                 max -= code;
 352
 353                                 if (cppi_ti_dma()
 354                                                 && epnum
 355                                                 && hw_ep->tx_channel) {
 356                                         unsigned        cppi = epnum - 1;
 357                                         void __iomem    *base;
 358                                         void __iomem    *ram;
 359
 360                                         base = musb->ctrl_base;
 361                                         ram = DAVINCI_RXCPPI_STATERAM_OFFSET(
 362                                                         cppi) + base;
 363                                         code = snprintf(buf, max,
 364                                                 "    tx dma%d: "
 365                                                 "%08x %08x, %08x %08x; "
 366                                                 "%08x %08x %08x .. %08x\n",
 367                                                 cppi,
 368                                                 musb_readl(ram, 0 * 4),
 369                                                 musb_readl(ram, 1 * 4),
 370                                                 musb_readl(ram, 2 * 4),
 371                                                 musb_readl(ram, 3 * 4),
 372                                                 musb_readl(ram, 4 * 4),
 373                                                 musb_readl(ram, 5 * 4),
 374                                                 musb_readl(ram, 6 * 4),
 375                                                 musb_readl(ram, 7 * 4));
 376                                         if (code <= 0)
 377                                                 break;
 378                                         code = min(code, (int) max);
 379                                         buf += code;
 380                                         max -= code;
 381                                 }
 382
 383                                 if (hw_ep == musb->control_ep
 384                                                 && !list_empty(
 385                                                         &hw_ep->in_list)) {
 386                                         code = dump_queue(&hw_ep->in_list,
 387                                                         buf, max);
 388                                         if (code <= 0)
 389                                                 break;
 390                                         code = min(code, (int) max);
 391                                         buf += code;
 392                                         max -= code;
 393                                 } else if (hw_ep == musb->bulk_ep
 394                                                 && !list_empty(
 395                                                         &hw_ep->out_list)) {
 396                                         code = dump_queue(&hw_ep->out_list,
 397                                                         buf, max);
 398                                         if (code <= 0)
 399                                                 break;
 400                                         code = min(code, (int) max);
 401                                         buf += code;
 402                                         max -= code;
 403                                 }
 404                         }
 405                 }
 406 #endif
 407 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 408                 if (is_peripheral_active(musb)) {
 409                         code = 0;
 410
 411                         if (hw_ep->ep_in.desc || !epnum) {
 412                                 code = dump_ep(&hw_ep->ep_in, buf, max);
 413                                 if (code <= 0)
 414                                         break;
 415                                 code = min(code, (int) max);
 416                                 buf += code;
 417                                 max -= code;
 418                         }
 419                         if (hw_ep->ep_out.desc) {
 420                                 code = dump_ep(&hw_ep->ep_out, buf, max);
 421                                 if (code <= 0)
 422                                         break;
 423                                 code = min(code, (int) max);
 424                                 buf += code;
 425                                 max -= code;
 426                         }
 427                 }
 428 #endif
 429         } while (0);
 430
 431         return buf - aBuffer;
 432 }
 433
 434 /* Dump the current status and compile options.
 435  * @param musb the device driver instance
 436  * @param buffer where to dump the status; it must be big enough to hold the
 437  * result otherwise "BAD THINGS HAPPENS(TM)".
 438  */
 439 static int dump_header_stats(struct musb *musb, char *buffer)
 440 {
 441         int code, count = 0;
 442         const void __iomem *mbase = musb->mregs;
 443
 444         *buffer = 0;
 445         count = sprintf(buffer, "Status: %sHDRC, Mode=%s "
 446                                 "(Power=%02x, DevCtl=%02x)\n",
 447                         (musb->is_multipoint ? "M" : ""), MUSB_MODE(musb),
 448                         musb_readb(mbase, MUSB_POWER),
 449                         musb_readb(mbase, MUSB_DEVCTL));
 450         if (count <= 0)
 451                 return 0;
 452         buffer += count;
 453
 454         code = sprintf(buffer, "OTG state: %s:%d; %sactive\n",
 455                                                                  otg_state_string(musb),musb->xceiv->state,
 456                         musb->is_active ? "" : "in");
 457         if (code <= 0)
 458                 goto done;
 459         buffer += code;
 460         count += code;
 461
 462         code = sprintf(buffer,
 463                         "Options: "
 464 #ifdef CONFIG_MUSB_PIO_ONLY
 465                         "pio"
 466 #elif defined(CONFIG_USB_TI_CPPI_DMA)
 467                         "cppi-dma"
 468 #elif defined(CONFIG_USB_INVENTRA_DMA)
 469                         "musb-dma"
 470 #elif defined(CONFIG_USB_TUSB_OMAP_DMA)
 471                         "tusb-omap-dma"
 472 #else
 473                         "?dma?"
 474 #endif
 475                         ", "
 476 #ifdef CONFIG_USB_MUSB_OTG
 477                         "otg (peripheral+host)"
 478 #elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
 479                         "peripheral"
 480 #elif defined(CONFIG_USB_MUSB_HDRC_HCD)
 481                         "host"
 482 #endif
 483                         ", debug=%d [eps=%d]\n",
 484                 musb_debug,
 485                 musb->nr_endpoints);
 486         if (code <= 0)
 487                 goto done;
 488         count += code;
 489         buffer += code;
 490
 491 #ifdef  CONFIG_USB_GADGET_MUSB_HDRC
 492         code = sprintf(buffer, "Peripheral address: %02x\n",
 493                         musb_readb(musb->ctrl_base, MUSB_FADDR));
 494         if (code <= 0)
 495                 goto done;
 496         buffer += code;
 497         count += code;
 498 #endif
 499
 500 #ifdef  CONFIG_USB_MUSB_HDRC_HCD
 501         code = sprintf(buffer, "Root port status: %08x\n",
 502                         musb->port1_status);
 503         if (code <= 0)
 504                 goto done;
 505         buffer += code;
 506         count += code;
 507 #endif
 508
 509 #ifdef  CONFIG_ARCH_DAVINCI
 510         code = sprintf(buffer,
 511                         "DaVinci: ctrl=%02x stat=%1x phy=%03x\n"
 512                         "\trndis=%05x auto=%04x intsrc=%08x intmsk=%08x"
 513                         "\n",
 514                         musb_readl(musb->ctrl_base, DAVINCI_USB_CTRL_REG),
 515                         musb_readl(musb->ctrl_base, DAVINCI_USB_STAT_REG),
 516                         __raw_readl((void __force __iomem *)
 517                                         IO_ADDRESS(USBPHY_CTL_PADDR)),
 518                         musb_readl(musb->ctrl_base, DAVINCI_RNDIS_REG),
 519                         musb_readl(musb->ctrl_base, DAVINCI_AUTOREQ_REG),
 520                         musb_readl(musb->ctrl_base,
 521                                         DAVINCI_USB_INT_SOURCE_REG),
 522                         musb_readl(musb->ctrl_base,
 523                                         DAVINCI_USB_INT_MASK_REG));
 524         if (code <= 0)
 525                 goto done;
 526         count += code;
 527         buffer += code;
 528 #endif  /* DAVINCI */
 529
 530 #ifdef CONFIG_USB_TUSB6010
 531         code = sprintf(buffer,
 532                         "TUSB6010: devconf %08x, phy enable %08x drive %08x"
 533                         "\n\totg %03x timer %08x"
 534                         "\n\tprcm conf %08x mgmt %08x; int src %08x mask %08x"
 535                         "\n",
 536                         musb_readl(musb->ctrl_base, TUSB_DEV_CONF),
 537                         musb_readl(musb->ctrl_base, TUSB_PHY_OTG_CTRL_ENABLE),
 538                         musb_readl(musb->ctrl_base, TUSB_PHY_OTG_CTRL),
 539                         musb_readl(musb->ctrl_base, TUSB_DEV_OTG_STAT),
 540                         musb_readl(musb->ctrl_base, TUSB_DEV_OTG_TIMER),
 541                         musb_readl(musb->ctrl_base, TUSB_PRCM_CONF),
 542                         musb_readl(musb->ctrl_base, TUSB_PRCM_MNGMT),
 543                         musb_readl(musb->ctrl_base, TUSB_INT_SRC),
 544                         musb_readl(musb->ctrl_base, TUSB_INT_MASK));
 545         if (code <= 0)
 546                 goto done;
 547         count += code;
 548         buffer += code;
 549 #endif  /* DAVINCI */
 550
 551         if (cppi_ti_dma() && musb->dma_controller) {
 552                 code = sprintf(buffer,
 553                                 "CPPI: txcr=%d txsrc=%01x txena=%01x; "
 554                                 "rxcr=%d rxsrc=%01x rxena=%01x "
 555                                 "\n",
 556                                 musb_readl(musb->ctrl_base,
 557                                                 DAVINCI_TXCPPI_CTRL_REG),
 558                                 musb_readl(musb->ctrl_base,
 559                                                 DAVINCI_TXCPPI_RAW_REG),
 560                                 musb_readl(musb->ctrl_base,
 561                                                 DAVINCI_TXCPPI_INTENAB_REG),
 562                                 musb_readl(musb->ctrl_base,
 563                                                 DAVINCI_RXCPPI_CTRL_REG),
 564                                 musb_readl(musb->ctrl_base,
 565                                                 DAVINCI_RXCPPI_RAW_REG),
 566                                 musb_readl(musb->ctrl_base,
 567                                                 DAVINCI_RXCPPI_INTENAB_REG));
 568                 if (code <= 0)
 569                         goto done;
 570                 count += code;
 571                 buffer += code;
 572         }
 573
 574 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 575         if (is_peripheral_enabled(musb)) {
 576                 code = sprintf(buffer, "Gadget driver: %s\n",
 577                                 musb->gadget_driver
 578                                         ? musb->gadget_driver->driver.name
 579                                         : "(none)");
 580                 if (code <= 0)
 581                         goto done;
 582                 count += code;
 583                 buffer += code;
 584         }
 585 #endif
 586
 587 done:
 588         return count;
 589 }
 590
 591 /* Write to ProcFS
 592  *
 593  * C soft-connect
 594  * c soft-disconnect
 595  * D<num> set/query the debug level
 596  * E rElinquish bus (OTG)
 597  * e enumerate
 598  * F force session (OTG-unfriendly)
 599  * H request host mode
 600  * h cancel host request
 601  * I enable HS
 602  * i disable HS
 603  * J set HS test mode
 604  * j clear HS test mode
 605  * K set FS test mode
 606  * k clear FS test mode
 607  * M set host test mode
 608  * m clear host test mode
 609  * R reset peripheral
 610  * r resume root hub
 611  * s stop session
 612  * T start sending TEST_PACKET
 613  * X term highspeed
 614  * Y term fullspeed
 615  * Z term lowspeed
 616  *
 617  */
 618
 619 extern inline void mbusywait(int ms);
 620 extern  void musb_port_reset(struct musb *musb, bool do_reset);
 621 extern void musb_port_suspend(struct musb *musb, bool do_suspend);
 622
 623 static int musb_proc_write(struct file *file, const char __user *buffer,
 624                         unsigned long count, void *data)
 625 {
 626         char cmd;
 627         u8 reg;
 628         struct musb *musb = (struct musb *)data;
 629         void __iomem *mbase = musb->mregs;
 630         unsigned long   flags;
 631         struct usb_hcd *hcd = musb_to_hcd(musb);
 632         struct usb_bus *bus = hcd_to_bus(hcd);
 633
 634         /* MOD_INC_USE_COUNT; */
 635
 636         if (unlikely(copy_from_user(&cmd, buffer, 1)))
 637                 return -EFAULT;
 638
 639
 640         switch (cmd) {
 641         case 'C':
 642                 if (mbase) {
 643                         reg = musb_readb(mbase, MUSB_POWER);
 644                         reg |= MUSB_POWER_SOFTCONN;
 645                         musb_writeb(mbase, MUSB_POWER, reg);
 646                 }
 647                 break;
 648
 649         case 'c':
 650                 if (mbase) {
 651                         reg = musb_readb(mbase, MUSB_POWER);
 652                         reg &= ~MUSB_POWER_SOFTCONN;
 653                         musb_writeb(mbase, MUSB_POWER, reg);
 654                 }
 655                 break;
 656
 657         case 'I':
 658                 if (mbase) {
 659                         reg = musb_readb(mbase, MUSB_POWER);
 660                         reg |= MUSB_POWER_HSENAB;
 661                         musb_writeb(mbase, MUSB_POWER, reg);
 662                 }
 663                 break;
 664
 665         case 'i':
 666                 if (mbase) {
 667                         reg = musb_readb(mbase, MUSB_POWER);
 668                         reg &= ~MUSB_POWER_HSENAB;
 669                         musb_writeb(mbase, MUSB_POWER, reg);
 670                 }
 671                 break;
 672
 673         case 'F':
 674                 if (mbase) {
 675                         reg = musb_readb(mbase, MUSB_DEVCTL);
 676                         reg |= MUSB_DEVCTL_SESSION;
 677                         musb_writeb(mbase, MUSB_DEVCTL, reg);
 678                 }
 679                 break;
 680
 681         case 's':
 682                 if (mbase) {
 683                         reg = musb_readb(mbase, MUSB_DEVCTL);
 684                         reg &= ~MUSB_DEVCTL_SESSION;
 685                         musb_writeb(mbase, MUSB_DEVCTL, reg);
 686                 }
 687                 break;
 688
 689         case 'H':
 690                 if (mbase) {
 691                         reg = musb_readb(mbase, MUSB_DEVCTL);
 692                         reg |= MUSB_DEVCTL_HR;
 693                         musb_writeb(mbase, MUSB_DEVCTL, reg);
 694                         /* MUSB_HST_MODE( ((struct musb*)data) ); */
 695                         /* WARNING("Host Mode\n"); */
 696                 }
 697                 break;
 698
 699         case 'h':
 700                 if (mbase) {
 701                         reg = musb_readb(mbase, MUSB_DEVCTL);
 702                         reg &= ~MUSB_DEVCTL_HR;
 703                         musb_writeb(mbase, MUSB_DEVCTL, reg);
 704                 }
 705                 break;
 706
 707         case 'T':
 708                 if (mbase) {
 709                         musb_load_testpacket(musb);
 710                         musb_writeb(mbase, MUSB_TESTMODE,
 711                                         MUSB_TEST_PACKET);
 712                 }
 713                 break;
 714
 715         case 'M':
 716                 if (mbase) {
 717                         reg = musb_readb(mbase, MUSB_TESTMODE);
 718                         reg |= MUSB_TEST_FORCE_HOST;
 719                         musb_writeb(mbase, MUSB_TESTMODE, reg);
 720                 }
 721                 break;
 722
 723         case 'm':
 724                 if (mbase) {
 725                         reg = musb_readb(mbase, MUSB_TESTMODE);
 726                         reg &= ~MUSB_TEST_FORCE_HOST;
 727                         musb_writeb(mbase, MUSB_TESTMODE, reg);
 728                         MUSB_DEV_MODE(musb);
 729                         musb->xceiv->state = OTG_STATE_B_IDLE;
 730                 }
 731                 break;
 732
 733   case 'L':
 734                         musb->xceiv->state = OTG_STATE_A_HOST;
 735                         MUSB_HST_MODE(musb);
 736                 break;
 737
 738   case 'l':
 739                         musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
 740                         MUSB_HST_MODE(musb);
 741                 break;
 742
 743         case 'J':
 744                 if (mbase) {
 745                         reg = musb_readb(mbase, MUSB_TESTMODE);
 746                         reg |= MUSB_TEST_FORCE_HS;
 747                         musb_writeb(mbase, MUSB_TESTMODE, reg);
 748                 }
 749                 break;
 750
 751         case 'j':
 752                 if (mbase) {
 753                         reg = musb_readb(mbase, MUSB_TESTMODE);
 754                         reg &= ~MUSB_TEST_FORCE_HS;
 755                         musb_writeb(mbase, MUSB_TESTMODE, reg);
 756                 }
 757                 break;
 758
 759         case 'K':
 760                 if (mbase) {
 761                         reg = musb_readb(mbase, MUSB_TESTMODE);
 762                         reg |= MUSB_TEST_FORCE_FS;
 763                         musb_writeb(mbase, MUSB_TESTMODE, reg);
 764                 }
 765                 break;
 766
 767         case 'k':
 768                 if (mbase) {
 769                         reg = musb_readb(mbase, MUSB_TESTMODE);
 770                         reg &= ~MUSB_TEST_FORCE_FS;
 771                         musb_writeb(mbase, MUSB_TESTMODE, reg);
 772                 }
 773                 break;
 774
 775   case 'X':
 776     if (mbase)
 777                         musb_force_term(mbase,MUSB_TERM_HOST_HIGHSPEED);
 778                 break;
 779
 780   case 'Y':
 781     if (mbase)
 782                         musb_force_term(mbase,MUSB_TERM_HOST_FULLSPEED);
 783                 break;
 784
 785   case 'Z':
 786     if (mbase)
 787                         musb_force_term(mbase,MUSB_TERM_HOST_LOWSPEED);
 788                 break;
 789
 790         case 'R':
 791                 musb_port_reset(musb, true);
 792                 while (time_before(jiffies, musb->rh_timer))
 793                         msleep(1);
 794                 musb_port_reset(musb, false);
 795
 796                 break;
 797
 798   case 'r':
 799                 usb_hcd_resume_root_hub(hcd);
 800                 break;
 801
 802   case 'e':
 803                 if(bus)
 804                         usb_bus_start_enum(bus,bus->otg_port);
 805                 break;
 806
 807         case 'U':
 808                 /*Suspend*/
 809                 musb_port_suspend(musb, true);
 810                 break;
 811
 812         case 'u':
 813                 /*Resume*/
 814                 musb_port_suspend(musb, false);
 815                 /*How to end sanely? */
 816                 musb_port_reset(musb, true);
 817                 while (time_before(jiffies, musb->rh_timer))
 818                         msleep(1);
 819                 musb_port_reset(musb, false);
 820
 821         break;
 822
 823         case '?':
 824                 INFO("?: you are seeing it\n");
 825                 INFO("C/c: soft connect enable/disable\n");
 826                 INFO("I/i: hispeed enable/disable\n");
 827                 INFO("F: force session start\n");
 828                 INFO("H: host mode\n");
 829                 INFO("T: start sending TEST_PACKET\n");
 830                 break;
 831
 832         default:
 833                 ERR("Command %c not implemented\n", cmd);
 834                 break;
 835         }
 836
 837         musb_platform_try_idle(musb, 0);
 838
 839
 840         return count;
 841 }
 842
 843 static int musb_proc_read(char *page, char **start,
 844                         off_t off, int count, int *eof, void *data)
 845 {
 846         char *buffer = page;
 847         int code = 0;
 848         unsigned long   flags;
 849         struct musb     *musb = data;
 850         unsigned        epnum;
 851
 852         count -= off;
 853         count -= 1;             /* for NUL at end */
 854         count -= 20; /* Padding */
 855
 856         if (count <= 0)
 857                 return -EINVAL;
 858
 859         spin_lock_irqsave(&musb->lock, flags);
 860
 861         code = dump_header_stats(musb, buffer);
 862         if (code > 0) {
 863                 buffer += code;
 864                 count -= code;
 865         }
 866
 867         if (count < 0)
 868                 goto done;
 869
 870         /* generate the report for the end points */
 871         /* REVISIT ... not unless something's connected! */
 872         for (epnum = 0; count >= 0 && epnum < musb->nr_endpoints;
 873                         epnum++) {
 874                 code = dump_end_info(musb, epnum, buffer, count);
 875                 if (code > 0) {
 876                         buffer += code;
 877                         count -= code;
 878                         if (count < 0)
 879                                 goto done;
 880                 }
 881         }
 882
 883
 884  done:
 885
 886         musb_platform_try_idle(musb, 0);
 887
 888         spin_unlock_irqrestore(&musb->lock, flags);
 889         *eof = 1;
 890
 891         if(count < 0)
 892                 return -EINVAL;
 893
 894         return buffer - page;
 895 }
 896
 897 void __devexit musb_debug_delete(char *name, struct musb *musb)
 898 {
 899         if (musb->proc_entry)
 900                 remove_proc_entry(name, NULL);
 901 }
 902
 903 struct proc_dir_entry *__init
 904 musb_debug_create(char *name, struct musb *data)
 905 {
 906         struct proc_dir_entry   *pde;
 907
 908         /* FIXME convert everything to seq_file; then later, debugfs */
 909
 910         if (!name)
 911                 return NULL;
 912
 913         pde = create_proc_entry(name, S_IFREG | S_IRUGO | S_IWUSR, NULL);
 914         data->proc_entry = pde;
 915         if (pde) {
 916                 pde->data = data;
 917                 /* pde->owner = THIS_MODULE; */
 918
 919                 pde->read_proc = musb_proc_read;
 920                 pde->write_proc = musb_proc_write;
 921
 922                 pde->size = 0;
 923
 924                 pr_debug("Registered /proc/%s\n", name);
 925         } else {
 926                 pr_debug("Cannot create a valid proc file entry");
 927         }
 928
 929         return pde;
 930 }