drivers/media/video/pvrusb2/pvrusb2-debugifc.c

   1 /*
   2  *
   3  *  $Id$
   4  *
   5  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <linux/string.h>
  23 #include <linux/slab.h>
  24 #include "pvrusb2-debugifc.h"
  25 #include "pvrusb2-hdw.h"
  26 #include "pvrusb2-debug.h"
  27 #include "pvrusb2-i2c-core.h"
  28
  29 struct debugifc_mask_item {
  30         const char *name;
  31         unsigned long msk;
  32 };
  33
  34 static struct debugifc_mask_item mask_items[] = {
  35         {"ENC_FIRMWARE",(1<<PVR2_SUBSYS_B_ENC_FIRMWARE)},
  36         {"ENC_CFG",(1<<PVR2_SUBSYS_B_ENC_CFG)},
  37         {"DIG_RUN",(1<<PVR2_SUBSYS_B_DIGITIZER_RUN)},
  38         {"USB_RUN",(1<<PVR2_SUBSYS_B_USBSTREAM_RUN)},
  39         {"ENC_RUN",(1<<PVR2_SUBSYS_B_ENC_RUN)},
  40 };
  41
  42
  43 static unsigned int debugifc_count_whitespace(const char *buf,
  44                                               unsigned int count)
  45 {
  46         unsigned int scnt;
  47         char ch;
  48
  49         for (scnt = 0; scnt < count; scnt++) {
  50                 ch = buf[scnt];
  51                 if (ch == ' ') continue;
  52                 if (ch == '\t') continue;
  53                 if (ch == '\n') continue;
  54                 break;
  55         }
  56         return scnt;
  57 }
  58
  59
  60 static unsigned int debugifc_count_nonwhitespace(const char *buf,
  61                                                  unsigned int count)
  62 {
  63         unsigned int scnt;
  64         char ch;
  65
  66         for (scnt = 0; scnt < count; scnt++) {
  67                 ch = buf[scnt];
  68                 if (ch == ' ') break;
  69                 if (ch == '\t') break;
  70                 if (ch == '\n') break;
  71         }
  72         return scnt;
  73 }
  74
  75
  76 static unsigned int debugifc_isolate_word(const char *buf,unsigned int count,
  77                                           const char **wstrPtr,
  78                                           unsigned int *wlenPtr)
  79 {
  80         const char *wptr;
  81         unsigned int consume_cnt = 0;
  82         unsigned int wlen;
  83         unsigned int scnt;
  84
  85         wptr = NULL;
  86         wlen = 0;
  87         scnt = debugifc_count_whitespace(buf,count);
  88         consume_cnt += scnt; count -= scnt; buf += scnt;
  89         if (!count) goto done;
  90
  91         scnt = debugifc_count_nonwhitespace(buf,count);
  92         if (!scnt) goto done;
  93         wptr = buf;
  94         wlen = scnt;
  95         consume_cnt += scnt; count -= scnt; buf += scnt;
  96
  97  done:
  98         *wstrPtr = wptr;
  99         *wlenPtr = wlen;
 100         return consume_cnt;
 101 }
 102
 103
 104 static int debugifc_parse_unsigned_number(const char *buf,unsigned int count,
 105                                           u32 *num_ptr)
 106 {
 107         u32 result = 0;
 108         u32 val;
 109         int ch;
 110         int radix = 10;
 111         if ((count >= 2) && (buf[0] == '0') &&
 112             ((buf[1] == 'x') || (buf[1] == 'X'))) {
 113                 radix = 16;
 114                 count -= 2;
 115                 buf += 2;
 116         } else if ((count >= 1) && (buf[0] == '0')) {
 117                 radix = 8;
 118         }
 119
 120         while (count--) {
 121                 ch = *buf++;
 122                 if ((ch >= '0') && (ch <= '9')) {
 123                         val = ch - '0';
 124                 } else if ((ch >= 'a') && (ch <= 'f')) {
 125                         val = ch - 'a' + 10;
 126                 } else if ((ch >= 'A') && (ch <= 'F')) {
 127                         val = ch - 'A' + 10;
 128                 } else {
 129                         return -EINVAL;
 130                 }
 131                 if (val >= radix) return -EINVAL;
 132                 result *= radix;
 133                 result += val;
 134         }
 135         *num_ptr = result;
 136         return 0;
 137 }
 138
 139
 140 static int debugifc_match_keyword(const char *buf,unsigned int count,
 141                                   const char *keyword)
 142 {
 143         unsigned int kl;
 144         if (!keyword) return 0;
 145         kl = strlen(keyword);
 146         if (kl != count) return 0;
 147         return !memcmp(buf,keyword,kl);
 148 }
 149
 150
 151 static unsigned long debugifc_find_mask(const char *buf,unsigned int count)
 152 {
 153         struct debugifc_mask_item *mip;
 154         unsigned int idx;
 155         for (idx = 0; idx < ARRAY_SIZE(mask_items); idx++) {
 156                 mip = mask_items + idx;
 157                 if (debugifc_match_keyword(buf,count,mip->name)) {
 158                         return mip->msk;
 159                 }
 160         }
 161         return 0;
 162 }
 163
 164
 165 static int debugifc_print_mask(char *buf,unsigned int sz,
 166                                unsigned long msk,unsigned long val)
 167 {
 168         struct debugifc_mask_item *mip;
 169         unsigned int idx;
 170         int bcnt = 0;
 171         int ccnt;
 172         for (idx = 0; idx < ARRAY_SIZE(mask_items); idx++) {
 173                 mip = mask_items + idx;
 174                 if (!(mip->msk & msk)) continue;
 175                 ccnt = scnprintf(buf,sz,"%s%c%s",
 176                                  (bcnt ? " " : ""),
 177                                  ((mip->msk & val) ? '+' : '-'),
 178                                  mip->name);
 179                 sz -= ccnt;
 180                 buf += ccnt;
 181                 bcnt += ccnt;
 182         }
 183         return bcnt;
 184 }
 185
 186 static unsigned int debugifc_parse_subsys_mask(const char *buf,
 187                                                unsigned int count,
 188                                                unsigned long *mskPtr,
 189                                                unsigned long *valPtr)
 190 {
 191         const char *wptr;
 192         unsigned int consume_cnt = 0;
 193         unsigned int scnt;
 194         unsigned int wlen;
 195         int mode;
 196         unsigned long m1,msk,val;
 197
 198         msk = 0;
 199         val = 0;
 200
 201         while (count) {
 202                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 203                 if (!scnt) break;
 204                 consume_cnt += scnt; count -= scnt; buf += scnt;
 205                 if (!wptr) break;
 206
 207                 mode = 0;
 208                 if (wlen) switch (wptr[0]) {
 209                 case '+':
 210                         wptr++;
 211                         wlen--;
 212                         break;
 213                 case '-':
 214                         mode = 1;
 215                         wptr++;
 216                         wlen--;
 217                         break;
 218                 }
 219                 if (!wlen) continue;
 220                 m1 = debugifc_find_mask(wptr,wlen);
 221                 if (!m1) break;
 222                 msk |= m1;
 223                 if (!mode) val |= m1;
 224         }
 225         *mskPtr = msk;
 226         *valPtr = val;
 227         return consume_cnt;
 228 }
 229
 230
 231 int pvr2_debugifc_print_info(struct pvr2_hdw *hdw,char *buf,unsigned int acnt)
 232 {
 233         int bcnt = 0;
 234         int ccnt;
 235         struct pvr2_hdw_debug_info dbg;
 236
 237         pvr2_hdw_get_debug_info(hdw,&dbg);
 238
 239         ccnt = scnprintf(buf,acnt,"big lock %s; ctl lock %s",
 240                          (dbg.big_lock_held ? "held" : "free"),
 241                          (dbg.ctl_lock_held ? "held" : "free"));
 242         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 243         if (dbg.ctl_lock_held) {
 244                 ccnt = scnprintf(buf,acnt,"; cmd_state=%d cmd_code=%d"
 245                                  " cmd_wlen=%d cmd_rlen=%d"
 246                                  " wpend=%d rpend=%d tmout=%d rstatus=%d"
 247                                  " wstatus=%d",
 248                                  dbg.cmd_debug_state,dbg.cmd_code,
 249                                  dbg.cmd_debug_write_len,
 250                                  dbg.cmd_debug_read_len,
 251                                  dbg.cmd_debug_write_pend,
 252                                  dbg.cmd_debug_read_pend,
 253                                  dbg.cmd_debug_timeout,
 254                                  dbg.cmd_debug_rstatus,
 255                                  dbg.cmd_debug_wstatus);
 256                 bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 257         }
 258         ccnt = scnprintf(buf,acnt,"\n");
 259         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 260         ccnt = scnprintf(
 261                 buf,acnt,"driver flags: %s %s %s\n",
 262                 (dbg.flag_init_ok ? "initialized" : "uninitialized"),
 263                 (dbg.flag_ok ? "ok" : "fail"),
 264                 (dbg.flag_disconnected ? "disconnected" : "connected"));
 265         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 266         ccnt = scnprintf(buf,acnt,"Subsystems enabled / configured: ");
 267         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 268         ccnt = debugifc_print_mask(buf,acnt,dbg.subsys_flags,dbg.subsys_flags);
 269         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 270         ccnt = scnprintf(buf,acnt,"\n");
 271         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 272         ccnt = scnprintf(buf,acnt,"Subsystems disabled / unconfigured: ");
 273         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 274         ccnt = debugifc_print_mask(buf,acnt,~dbg.subsys_flags,dbg.subsys_flags);
 275         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 276         ccnt = scnprintf(buf,acnt,"\n");
 277         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 278
 279         ccnt = scnprintf(buf,acnt,"Attached I2C modules:\n");
 280         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 281         ccnt = pvr2_i2c_report(hdw,buf,acnt);
 282         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 283
 284         return bcnt;
 285 }
 286
 287
 288 int pvr2_debugifc_print_status(struct pvr2_hdw *hdw,
 289                                char *buf,unsigned int acnt)
 290 {
 291         int bcnt = 0;
 292         int ccnt;
 293         unsigned long msk;
 294         int ret;
 295         u32 gpio_dir,gpio_in,gpio_out;
 296
 297         ret = pvr2_hdw_is_hsm(hdw);
 298         ccnt = scnprintf(buf,acnt,"USB link speed: %s\n",
 299                          (ret < 0 ? "FAIL" : (ret ? "high" : "full")));
 300         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 301
 302         gpio_dir = 0; gpio_in = 0; gpio_out = 0;
 303         pvr2_hdw_gpio_get_dir(hdw,&gpio_dir);
 304         pvr2_hdw_gpio_get_out(hdw,&gpio_out);
 305         pvr2_hdw_gpio_get_in(hdw,&gpio_in);
 306         ccnt = scnprintf(buf,acnt,"GPIO state: dir=0x%x in=0x%x out=0x%x\n",
 307                          gpio_dir,gpio_in,gpio_out);
 308         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 309
 310         ccnt = scnprintf(buf,acnt,"Streaming is %s\n",
 311                          pvr2_hdw_get_streaming(hdw) ? "on" : "off");
 312         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 313
 314         msk = pvr2_hdw_subsys_get(hdw);
 315         ccnt = scnprintf(buf,acnt,"Subsystems enabled / configured: ");
 316         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 317         ccnt = debugifc_print_mask(buf,acnt,msk,msk);
 318         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 319         ccnt = scnprintf(buf,acnt,"\n");
 320         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 321         ccnt = scnprintf(buf,acnt,"Subsystems disabled / unconfigured: ");
 322         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 323         ccnt = debugifc_print_mask(buf,acnt,~msk,msk);
 324         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 325         ccnt = scnprintf(buf,acnt,"\n");
 326         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 327
 328         msk = pvr2_hdw_subsys_stream_get(hdw);
 329         ccnt = scnprintf(buf,acnt,"Subsystems stopped on stream shutdown: ");
 330         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 331         ccnt = debugifc_print_mask(buf,acnt,msk,msk);
 332         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 333         ccnt = scnprintf(buf,acnt,"\n");
 334         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 335
 336         return bcnt;
 337 }
 338
 339
 340 static int pvr2_debugifc_do1cmd(struct pvr2_hdw *hdw,const char *buf,
 341                                 unsigned int count)
 342 {
 343         const char *wptr;
 344         unsigned int wlen;
 345         unsigned int scnt;
 346
 347         scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 348         if (!scnt) return 0;
 349         count -= scnt; buf += scnt;
 350         if (!wptr) return 0;
 351
 352         pvr2_trace(PVR2_TRACE_DEBUGIFC,"debugifc cmd: \"%.*s\"",wlen,wptr);
 353         if (debugifc_match_keyword(wptr,wlen,"reset")) {
 354                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 355                 if (!scnt) return -EINVAL;
 356                 count -= scnt; buf += scnt;
 357                 if (!wptr) return -EINVAL;
 358                 if (debugifc_match_keyword(wptr,wlen,"cpu")) {
 359                         pvr2_hdw_cpureset_assert(hdw,!0);
 360                         pvr2_hdw_cpureset_assert(hdw,0);
 361                         return 0;
 362                 } else if (debugifc_match_keyword(wptr,wlen,"bus")) {
 363                         pvr2_hdw_device_reset(hdw);
 364                 } else if (debugifc_match_keyword(wptr,wlen,"soft")) {
 365                         return pvr2_hdw_cmd_powerup(hdw);
 366                 } else if (debugifc_match_keyword(wptr,wlen,"deep")) {
 367                         return pvr2_hdw_cmd_deep_reset(hdw);
 368                 } else if (debugifc_match_keyword(wptr,wlen,"firmware")) {
 369                         return pvr2_upload_firmware2(hdw);
 370                 } else if (debugifc_match_keyword(wptr,wlen,"decoder")) {
 371                         return pvr2_hdw_cmd_decoder_reset(hdw);
 372                 }
 373                 return -EINVAL;
 374         } else if (debugifc_match_keyword(wptr,wlen,"subsys_flags")) {
 375                 unsigned long msk = 0;
 376                 unsigned long val = 0;
 377                 if (debugifc_parse_subsys_mask(buf,count,&msk,&val) != count) {
 378                         pvr2_trace(PVR2_TRACE_DEBUGIFC,
 379                                    "debugifc parse error on subsys mask");
 380                         return -EINVAL;
 381                 }
 382                 pvr2_hdw_subsys_bit_chg(hdw,msk,val);
 383                 return 0;
 384         } else if (debugifc_match_keyword(wptr,wlen,"stream_flags")) {
 385                 unsigned long msk = 0;
 386                 unsigned long val = 0;
 387                 if (debugifc_parse_subsys_mask(buf,count,&msk,&val) != count) {
 388                         pvr2_trace(PVR2_TRACE_DEBUGIFC,
 389                                    "debugifc parse error on stream mask");
 390                         return -EINVAL;
 391                 }
 392                 pvr2_hdw_subsys_stream_bit_chg(hdw,msk,val);
 393                 return 0;
 394         } else if (debugifc_match_keyword(wptr,wlen,"cpufw")) {
 395                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 396                 if (!scnt) return -EINVAL;
 397                 count -= scnt; buf += scnt;
 398                 if (!wptr) return -EINVAL;
 399                 if (debugifc_match_keyword(wptr,wlen,"fetch")) {
 400                         pvr2_hdw_cpufw_set_enabled(hdw,!0);
 401                         return 0;
 402                 } else if (debugifc_match_keyword(wptr,wlen,"done")) {
 403                         pvr2_hdw_cpufw_set_enabled(hdw,0);
 404                         return 0;
 405                 } else {
 406                         return -EINVAL;
 407                 }
 408         } else if (debugifc_match_keyword(wptr,wlen,"gpio")) {
 409                 int dir_fl = 0;
 410                 int ret;
 411                 u32 msk,val;
 412                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 413                 if (!scnt) return -EINVAL;
 414                 count -= scnt; buf += scnt;
 415                 if (!wptr) return -EINVAL;
 416                 if (debugifc_match_keyword(wptr,wlen,"dir")) {
 417                         dir_fl = !0;
 418                 } else if (!debugifc_match_keyword(wptr,wlen,"out")) {
 419                         return -EINVAL;
 420                 }
 421                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 422                 if (!scnt) return -EINVAL;
 423                 count -= scnt; buf += scnt;
 424                 if (!wptr) return -EINVAL;
 425                 ret = debugifc_parse_unsigned_number(wptr,wlen,&msk);
 426                 if (ret) return ret;
 427                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 428                 if (wptr) {
 429                         ret = debugifc_parse_unsigned_number(wptr,wlen,&val);
 430                         if (ret) return ret;
 431                 } else {
 432                         val = msk;
 433                         msk = 0xffffffff;
 434                 }
 435                 if (dir_fl) {
 436                         ret = pvr2_hdw_gpio_chg_dir(hdw,msk,val);
 437                 } else {
 438                         ret = pvr2_hdw_gpio_chg_out(hdw,msk,val);
 439                 }
 440                 return ret;
 441         }
 442         pvr2_trace(PVR2_TRACE_DEBUGIFC,
 443                    "debugifc failed to recognize cmd: \"%.*s\"",wlen,wptr);
 444         return -EINVAL;
 445 }
 446
 447
 448 int pvr2_debugifc_docmd(struct pvr2_hdw *hdw,const char *buf,
 449                         unsigned int count)
 450 {
 451         unsigned int bcnt = 0;
 452         int ret;
 453
 454         while (count) {
 455                 for (bcnt = 0; bcnt < count; bcnt++) {
 456                         if (buf[bcnt] == '\n') break;
 457                 }
 458
 459                 ret = pvr2_debugifc_do1cmd(hdw,buf,bcnt);
 460                 if (ret < 0) return ret;
 461                 if (bcnt < count) bcnt++;
 462                 buf += bcnt;
 463                 count -= bcnt;
 464         }
 465
 466         return 0;
 467 }
 468
 469
 470 /*
 471   Stuff for Emacs to see, in order to encourage consistent editing style:
 472   *** Local Variables: ***
 473   *** mode: c ***
 474   *** fill-column: 75 ***
 475   *** tab-width: 8 ***
 476   *** c-basic-offset: 8 ***
 477   *** End: ***
 478   */