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