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

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include <linux/string.h>
  22 #include "pvrusb2-debugifc.h"
  23 #include "pvrusb2-hdw.h"
  24 #include "pvrusb2-debug.h"
  25
  26 struct debugifc_mask_item {
  27         const char *name;
  28         unsigned long msk;
  29 };
  30
  31
  32 static unsigned int debugifc_count_whitespace(const char *buf,
  33                                               unsigned int count)
  34 {
  35         unsigned int scnt;
  36         char ch;
  37
  38         for (scnt = 0; scnt < count; scnt++) {
  39                 ch = buf[scnt];
  40                 if (ch == ' ') continue;
  41                 if (ch == '\t') continue;
  42                 if (ch == '\n') continue;
  43                 break;
  44         }
  45         return scnt;
  46 }
  47
  48
  49 static unsigned int debugifc_count_nonwhitespace(const char *buf,
  50                                                  unsigned int count)
  51 {
  52         unsigned int scnt;
  53         char ch;
  54
  55         for (scnt = 0; scnt < count; scnt++) {
  56                 ch = buf[scnt];
  57                 if (ch == ' ') break;
  58                 if (ch == '\t') break;
  59                 if (ch == '\n') break;
  60         }
  61         return scnt;
  62 }
  63
  64
  65 static unsigned int debugifc_isolate_word(const char *buf,unsigned int count,
  66                                           const char **wstrPtr,
  67                                           unsigned int *wlenPtr)
  68 {
  69         const char *wptr;
  70         unsigned int consume_cnt = 0;
  71         unsigned int wlen;
  72         unsigned int scnt;
  73
  74         wptr = NULL;
  75         wlen = 0;
  76         scnt = debugifc_count_whitespace(buf,count);
  77         consume_cnt += scnt; count -= scnt; buf += scnt;
  78         if (!count) goto done;
  79
  80         scnt = debugifc_count_nonwhitespace(buf,count);
  81         if (!scnt) goto done;
  82         wptr = buf;
  83         wlen = scnt;
  84         consume_cnt += scnt; count -= scnt; buf += scnt;
  85
  86  done:
  87         *wstrPtr = wptr;
  88         *wlenPtr = wlen;
  89         return consume_cnt;
  90 }
  91
  92
  93 static int debugifc_parse_unsigned_number(const char *buf,unsigned int count,
  94                                           u32 *num_ptr)
  95 {
  96         u32 result = 0;
  97         u32 val;
  98         int ch;
  99         int radix = 10;
 100         if ((count >= 2) && (buf[0] == '0') &&
 101             ((buf[1] == 'x') || (buf[1] == 'X'))) {
 102                 radix = 16;
 103                 count -= 2;
 104                 buf += 2;
 105         } else if ((count >= 1) && (buf[0] == '0')) {
 106                 radix = 8;
 107         }
 108
 109         while (count--) {
 110                 ch = *buf++;
 111                 if ((ch >= '0') && (ch <= '9')) {
 112                         val = ch - '0';
 113                 } else if ((ch >= 'a') && (ch <= 'f')) {
 114                         val = ch - 'a' + 10;
 115                 } else if ((ch >= 'A') && (ch <= 'F')) {
 116                         val = ch - 'A' + 10;
 117                 } else {
 118                         return -EINVAL;
 119                 }
 120                 if (val >= radix) return -EINVAL;
 121                 result *= radix;
 122                 result += val;
 123         }
 124         *num_ptr = result;
 125         return 0;
 126 }
 127
 128
 129 static int debugifc_match_keyword(const char *buf,unsigned int count,
 130                                   const char *keyword)
 131 {
 132         unsigned int kl;
 133         if (!keyword) return 0;
 134         kl = strlen(keyword);
 135         if (kl != count) return 0;
 136         return !memcmp(buf,keyword,kl);
 137 }
 138
 139
 140 int pvr2_debugifc_print_info(struct pvr2_hdw *hdw,char *buf,unsigned int acnt)
 141 {
 142         int bcnt = 0;
 143         int ccnt;
 144         ccnt = scnprintf(buf, acnt, "Driver hardware description: %s\n",
 145                          pvr2_hdw_get_desc(hdw));
 146         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 147         ccnt = scnprintf(buf,acnt,"Driver state info:\n");
 148         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 149         ccnt = pvr2_hdw_state_report(hdw,buf,acnt);
 150         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 151
 152         return bcnt;
 153 }
 154
 155
 156 int pvr2_debugifc_print_status(struct pvr2_hdw *hdw,
 157                                char *buf,unsigned int acnt)
 158 {
 159         int bcnt = 0;
 160         int ccnt;
 161         int ret;
 162         u32 gpio_dir,gpio_in,gpio_out;
 163         struct pvr2_stream_stats stats;
 164         struct pvr2_stream *sp;
 165
 166         ret = pvr2_hdw_is_hsm(hdw);
 167         ccnt = scnprintf(buf,acnt,"USB link speed: %s\n",
 168                          (ret < 0 ? "FAIL" : (ret ? "high" : "full")));
 169         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 170
 171         gpio_dir = 0; gpio_in = 0; gpio_out = 0;
 172         pvr2_hdw_gpio_get_dir(hdw,&gpio_dir);
 173         pvr2_hdw_gpio_get_out(hdw,&gpio_out);
 174         pvr2_hdw_gpio_get_in(hdw,&gpio_in);
 175         ccnt = scnprintf(buf,acnt,"GPIO state: dir=0x%x in=0x%x out=0x%x\n",
 176                          gpio_dir,gpio_in,gpio_out);
 177         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 178
 179         ccnt = scnprintf(buf,acnt,"Streaming is %s\n",
 180                          pvr2_hdw_get_streaming(hdw) ? "on" : "off");
 181         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 182
 183
 184         sp = pvr2_hdw_get_video_stream(hdw);
 185         if (sp) {
 186                 pvr2_stream_get_stats(sp, &stats, 0);
 187                 ccnt = scnprintf(
 188                         buf,acnt,
 189                         "Bytes streamed=%u"
 190                         " URBs: queued=%u idle=%u ready=%u"
 191                         " processed=%u failed=%u\n",
 192                         stats.bytes_processed,
 193                         stats.buffers_in_queue,
 194                         stats.buffers_in_idle,
 195                         stats.buffers_in_ready,
 196                         stats.buffers_processed,
 197                         stats.buffers_failed);
 198                 bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 199         }
 200
 201         return bcnt;
 202 }
 203
 204
 205 static int pvr2_debugifc_do1cmd(struct pvr2_hdw *hdw,const char *buf,
 206                                 unsigned int count)
 207 {
 208         const char *wptr;
 209         unsigned int wlen;
 210         unsigned int scnt;
 211
 212         scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 213         if (!scnt) return 0;
 214         count -= scnt; buf += scnt;
 215         if (!wptr) return 0;
 216
 217         pvr2_trace(PVR2_TRACE_DEBUGIFC,"debugifc cmd: \"%.*s\"",wlen,wptr);
 218         if (debugifc_match_keyword(wptr,wlen,"reset")) {
 219                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 220                 if (!scnt) return -EINVAL;
 221                 count -= scnt; buf += scnt;
 222                 if (!wptr) return -EINVAL;
 223                 if (debugifc_match_keyword(wptr,wlen,"cpu")) {
 224                         pvr2_hdw_cpureset_assert(hdw,!0);
 225                         pvr2_hdw_cpureset_assert(hdw,0);
 226                         return 0;
 227                 } else if (debugifc_match_keyword(wptr,wlen,"bus")) {
 228                         pvr2_hdw_device_reset(hdw);
 229                 } else if (debugifc_match_keyword(wptr,wlen,"soft")) {
 230                         return pvr2_hdw_cmd_powerup(hdw);
 231                 } else if (debugifc_match_keyword(wptr,wlen,"deep")) {
 232                         return pvr2_hdw_cmd_deep_reset(hdw);
 233                 } else if (debugifc_match_keyword(wptr,wlen,"firmware")) {
 234                         return pvr2_upload_firmware2(hdw);
 235                 } else if (debugifc_match_keyword(wptr,wlen,"decoder")) {
 236                         return pvr2_hdw_cmd_decoder_reset(hdw);
 237                 } else if (debugifc_match_keyword(wptr,wlen,"worker")) {
 238                         return pvr2_hdw_untrip(hdw);
 239                 } else if (debugifc_match_keyword(wptr,wlen,"usbstats")) {
 240                         pvr2_stream_get_stats(pvr2_hdw_get_video_stream(hdw),
 241                                               NULL, !0);
 242                         return 0;
 243                 }
 244                 return -EINVAL;
 245         } else if (debugifc_match_keyword(wptr,wlen,"cpufw")) {
 246                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 247                 if (!scnt) return -EINVAL;
 248                 count -= scnt; buf += scnt;
 249                 if (!wptr) return -EINVAL;
 250                 if (debugifc_match_keyword(wptr,wlen,"fetch")) {
 251                         scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 252                         if (scnt && wptr) {
 253                                 count -= scnt; buf += scnt;
 254                                 if (debugifc_match_keyword(wptr, wlen,
 255                                                            "prom")) {
 256                                         pvr2_hdw_cpufw_set_enabled(hdw, 2, !0);
 257                                 } else if (debugifc_match_keyword(wptr, wlen,
 258                                                                   "ram8k")) {
 259                                         pvr2_hdw_cpufw_set_enabled(hdw, 0, !0);
 260                                 } else if (debugifc_match_keyword(wptr, wlen,
 261                                                                   "ram16k")) {
 262                                         pvr2_hdw_cpufw_set_enabled(hdw, 1, !0);
 263                                 } else {
 264                                         return -EINVAL;
 265                                 }
 266                         }
 267                         pvr2_hdw_cpufw_set_enabled(hdw,0,!0);
 268                         return 0;
 269                 } else if (debugifc_match_keyword(wptr,wlen,"done")) {
 270                         pvr2_hdw_cpufw_set_enabled(hdw,0,0);
 271                         return 0;
 272                 } else {
 273                         return -EINVAL;
 274                 }
 275         } else if (debugifc_match_keyword(wptr,wlen,"gpio")) {
 276                 int dir_fl = 0;
 277                 int ret;
 278                 u32 msk,val;
 279                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 280                 if (!scnt) return -EINVAL;
 281                 count -= scnt; buf += scnt;
 282                 if (!wptr) return -EINVAL;
 283                 if (debugifc_match_keyword(wptr,wlen,"dir")) {
 284                         dir_fl = !0;
 285                 } else if (!debugifc_match_keyword(wptr,wlen,"out")) {
 286                         return -EINVAL;
 287                 }
 288                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 289                 if (!scnt) return -EINVAL;
 290                 count -= scnt; buf += scnt;
 291                 if (!wptr) return -EINVAL;
 292                 ret = debugifc_parse_unsigned_number(wptr,wlen,&msk);
 293                 if (ret) return ret;
 294                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 295                 if (wptr) {
 296                         ret = debugifc_parse_unsigned_number(wptr,wlen,&val);
 297                         if (ret) return ret;
 298                 } else {
 299                         val = msk;
 300                         msk = 0xffffffff;
 301                 }
 302                 if (dir_fl) {
 303                         ret = pvr2_hdw_gpio_chg_dir(hdw,msk,val);
 304                 } else {
 305                         ret = pvr2_hdw_gpio_chg_out(hdw,msk,val);
 306                 }
 307                 return ret;
 308         }
 309         pvr2_trace(PVR2_TRACE_DEBUGIFC,
 310                    "debugifc failed to recognize cmd: \"%.*s\"",wlen,wptr);
 311         return -EINVAL;
 312 }
 313
 314
 315 int pvr2_debugifc_docmd(struct pvr2_hdw *hdw,const char *buf,
 316                         unsigned int count)
 317 {
 318         unsigned int bcnt = 0;
 319         int ret;
 320
 321         while (count) {
 322                 for (bcnt = 0; bcnt < count; bcnt++) {
 323                         if (buf[bcnt] == '\n') break;
 324                 }
 325
 326                 ret = pvr2_debugifc_do1cmd(hdw,buf,bcnt);
 327                 if (ret < 0) return ret;
 328                 if (bcnt < count) bcnt++;
 329                 buf += bcnt;
 330                 count -= bcnt;
 331         }
 332
 333         return 0;
 334 }
 335
 336
 337 /*
 338   Stuff for Emacs to see, in order to encourage consistent editing style:
 339   *** Local Variables: ***
 340   *** mode: c ***
 341   *** fill-column: 75 ***
 342   *** tab-width: 8 ***
 343   *** c-basic-offset: 8 ***
 344   *** End: ***
 345   */