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 #include "pvrusb2-i2c-core.h"
  27
  28 struct debugifc_mask_item {
  29         const char *name;
  30         unsigned long msk;
  31 };
  32
  33
  34 static unsigned int debugifc_count_whitespace(const char *buf,
  35                                               unsigned int count)
  36 {
  37         unsigned int scnt;
  38         char ch;
  39
  40         for (scnt = 0; scnt < count; scnt++) {
  41                 ch = buf[scnt];
  42                 if (ch == ' ') continue;
  43                 if (ch == '\t') continue;
  44                 if (ch == '\n') continue;
  45                 break;
  46         }
  47         return scnt;
  48 }
  49
  50
  51 static unsigned int debugifc_count_nonwhitespace(const char *buf,
  52                                                  unsigned int count)
  53 {
  54         unsigned int scnt;
  55         char ch;
  56
  57         for (scnt = 0; scnt < count; scnt++) {
  58                 ch = buf[scnt];
  59                 if (ch == ' ') break;
  60                 if (ch == '\t') break;
  61                 if (ch == '\n') break;
  62         }
  63         return scnt;
  64 }
  65
  66
  67 static unsigned int debugifc_isolate_word(const char *buf,unsigned int count,
  68                                           const char **wstrPtr,
  69                                           unsigned int *wlenPtr)
  70 {
  71         const char *wptr;
  72         unsigned int consume_cnt = 0;
  73         unsigned int wlen;
  74         unsigned int scnt;
  75
  76         wptr = NULL;
  77         wlen = 0;
  78         scnt = debugifc_count_whitespace(buf,count);
  79         consume_cnt += scnt; count -= scnt; buf += scnt;
  80         if (!count) goto done;
  81
  82         scnt = debugifc_count_nonwhitespace(buf,count);
  83         if (!scnt) goto done;
  84         wptr = buf;
  85         wlen = scnt;
  86         consume_cnt += scnt; count -= scnt; buf += scnt;
  87
  88  done:
  89         *wstrPtr = wptr;
  90         *wlenPtr = wlen;
  91         return consume_cnt;
  92 }
  93
  94
  95 static int debugifc_parse_unsigned_number(const char *buf,unsigned int count,
  96                                           u32 *num_ptr)
  97 {
  98         u32 result = 0;
  99         u32 val;
 100         int ch;
 101         int radix = 10;
 102         if ((count >= 2) && (buf[0] == '0') &&
 103             ((buf[1] == 'x') || (buf[1] == 'X'))) {
 104                 radix = 16;
 105                 count -= 2;
 106                 buf += 2;
 107         } else if ((count >= 1) && (buf[0] == '0')) {
 108                 radix = 8;
 109         }
 110
 111         while (count--) {
 112                 ch = *buf++;
 113                 if ((ch >= '0') && (ch <= '9')) {
 114                         val = ch - '0';
 115                 } else if ((ch >= 'a') && (ch <= 'f')) {
 116                         val = ch - 'a' + 10;
 117                 } else if ((ch >= 'A') && (ch <= 'F')) {
 118                         val = ch - 'A' + 10;
 119                 } else {
 120                         return -EINVAL;
 121                 }
 122                 if (val >= radix) return -EINVAL;
 123                 result *= radix;
 124                 result += val;
 125         }
 126         *num_ptr = result;
 127         return 0;
 128 }
 129
 130
 131 static int debugifc_match_keyword(const char *buf,unsigned int count,
 132                                   const char *keyword)
 133 {
 134         unsigned int kl;
 135         if (!keyword) return 0;
 136         kl = strlen(keyword);
 137         if (kl != count) return 0;
 138         return !memcmp(buf,keyword,kl);
 139 }
 140
 141
 142 int pvr2_debugifc_print_info(struct pvr2_hdw *hdw,char *buf,unsigned int acnt)
 143 {
 144         int bcnt = 0;
 145         int ccnt;
 146         ccnt = scnprintf(buf,acnt,"Driver state info:\n");
 147         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 148         ccnt = pvr2_hdw_state_report(hdw,buf,acnt);
 149         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 150         ccnt = scnprintf(buf,acnt,"Attached I2C modules:\n");
 151         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 152         ccnt = pvr2_i2c_report(hdw,buf,acnt);
 153         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 154
 155         return bcnt;
 156 }
 157
 158
 159 int pvr2_debugifc_print_status(struct pvr2_hdw *hdw,
 160                                char *buf,unsigned int acnt)
 161 {
 162         int bcnt = 0;
 163         int ccnt;
 164         int ret;
 165         u32 gpio_dir,gpio_in,gpio_out;
 166         struct pvr2_stream_stats stats;
 167         struct pvr2_stream *sp;
 168
 169         ret = pvr2_hdw_is_hsm(hdw);
 170         ccnt = scnprintf(buf,acnt,"USB link speed: %s\n",
 171                          (ret < 0 ? "FAIL" : (ret ? "high" : "full")));
 172         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 173
 174         gpio_dir = 0; gpio_in = 0; gpio_out = 0;
 175         pvr2_hdw_gpio_get_dir(hdw,&gpio_dir);
 176         pvr2_hdw_gpio_get_out(hdw,&gpio_out);
 177         pvr2_hdw_gpio_get_in(hdw,&gpio_in);
 178         ccnt = scnprintf(buf,acnt,"GPIO state: dir=0x%x in=0x%x out=0x%x\n",
 179                          gpio_dir,gpio_in,gpio_out);
 180         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 181
 182         ccnt = scnprintf(buf,acnt,"Streaming is %s\n",
 183                          pvr2_hdw_get_streaming(hdw) ? "on" : "off");
 184         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 185
 186
 187         sp = pvr2_hdw_get_video_stream(hdw);
 188         if (sp) {
 189                 pvr2_stream_get_stats(sp, &stats, 0);
 190                 ccnt = scnprintf(
 191                         buf,acnt,
 192                         "Bytes streamed=%u"
 193                         " URBs: queued=%u idle=%u ready=%u"
 194                         " processed=%u failed=%u\n",
 195                         stats.bytes_processed,
 196                         stats.buffers_in_queue,
 197                         stats.buffers_in_idle,
 198                         stats.buffers_in_ready,
 199                         stats.buffers_processed,
 200                         stats.buffers_failed);
 201                 bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 202         }
 203
 204         return bcnt;
 205 }
 206
 207
 208 static int pvr2_debugifc_do1cmd(struct pvr2_hdw *hdw,const char *buf,
 209                                 unsigned int count)
 210 {
 211         const char *wptr;
 212         unsigned int wlen;
 213         unsigned int scnt;
 214
 215         scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 216         if (!scnt) return 0;
 217         count -= scnt; buf += scnt;
 218         if (!wptr) return 0;
 219
 220         pvr2_trace(PVR2_TRACE_DEBUGIFC,"debugifc cmd: \"%.*s\"",wlen,wptr);
 221         if (debugifc_match_keyword(wptr,wlen,"reset")) {
 222                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 223                 if (!scnt) return -EINVAL;
 224                 count -= scnt; buf += scnt;
 225                 if (!wptr) return -EINVAL;
 226                 if (debugifc_match_keyword(wptr,wlen,"cpu")) {
 227                         pvr2_hdw_cpureset_assert(hdw,!0);
 228                         pvr2_hdw_cpureset_assert(hdw,0);
 229                         return 0;
 230                 } else if (debugifc_match_keyword(wptr,wlen,"bus")) {
 231                         pvr2_hdw_device_reset(hdw);
 232                 } else if (debugifc_match_keyword(wptr,wlen,"soft")) {
 233                         return pvr2_hdw_cmd_powerup(hdw);
 234                 } else if (debugifc_match_keyword(wptr,wlen,"deep")) {
 235                         return pvr2_hdw_cmd_deep_reset(hdw);
 236                 } else if (debugifc_match_keyword(wptr,wlen,"firmware")) {
 237                         return pvr2_upload_firmware2(hdw);
 238                 } else if (debugifc_match_keyword(wptr,wlen,"decoder")) {
 239                         return pvr2_hdw_cmd_decoder_reset(hdw);
 240                 } else if (debugifc_match_keyword(wptr,wlen,"worker")) {
 241                         return pvr2_hdw_untrip(hdw);
 242                 } else if (debugifc_match_keyword(wptr,wlen,"usbstats")) {
 243                         pvr2_stream_get_stats(pvr2_hdw_get_video_stream(hdw),
 244                                               NULL, !0);
 245                         return 0;
 246                 }
 247                 return -EINVAL;
 248         } else if (debugifc_match_keyword(wptr,wlen,"cpufw")) {
 249                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 250                 if (!scnt) return -EINVAL;
 251                 count -= scnt; buf += scnt;
 252                 if (!wptr) return -EINVAL;
 253                 if (debugifc_match_keyword(wptr,wlen,"fetch")) {
 254                         scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 255                         if (scnt && wptr) {
 256                                 count -= scnt; buf += scnt;
 257                                 if (debugifc_match_keyword(wptr,wlen,"prom")) {
 258                                         pvr2_hdw_cpufw_set_enabled(hdw,!0,!0);
 259                                 } else if (debugifc_match_keyword(wptr,wlen,
 260                                                                   "ram")) {
 261                                         pvr2_hdw_cpufw_set_enabled(hdw,0,!0);
 262                                 } else {
 263                                         return -EINVAL;
 264                                 }
 265                         }
 266                         pvr2_hdw_cpufw_set_enabled(hdw,0,!0);
 267                         return 0;
 268                 } else if (debugifc_match_keyword(wptr,wlen,"done")) {
 269                         pvr2_hdw_cpufw_set_enabled(hdw,0,0);
 270                         return 0;
 271                 } else {
 272                         return -EINVAL;
 273                 }
 274         } else if (debugifc_match_keyword(wptr,wlen,"gpio")) {
 275                 int dir_fl = 0;
 276                 int ret;
 277                 u32 msk,val;
 278                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 279                 if (!scnt) return -EINVAL;
 280                 count -= scnt; buf += scnt;
 281                 if (!wptr) return -EINVAL;
 282                 if (debugifc_match_keyword(wptr,wlen,"dir")) {
 283                         dir_fl = !0;
 284                 } else if (!debugifc_match_keyword(wptr,wlen,"out")) {
 285                         return -EINVAL;
 286                 }
 287                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 288                 if (!scnt) return -EINVAL;
 289                 count -= scnt; buf += scnt;
 290                 if (!wptr) return -EINVAL;
 291                 ret = debugifc_parse_unsigned_number(wptr,wlen,&msk);
 292                 if (ret) return ret;
 293                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 294                 if (wptr) {
 295                         ret = debugifc_parse_unsigned_number(wptr,wlen,&val);
 296                         if (ret) return ret;
 297                 } else {
 298                         val = msk;
 299                         msk = 0xffffffff;
 300                 }
 301                 if (dir_fl) {
 302                         ret = pvr2_hdw_gpio_chg_dir(hdw,msk,val);
 303                 } else {
 304                         ret = pvr2_hdw_gpio_chg_out(hdw,msk,val);
 305                 }
 306                 return ret;
 307         }
 308         pvr2_trace(PVR2_TRACE_DEBUGIFC,
 309                    "debugifc failed to recognize cmd: \"%.*s\"",wlen,wptr);
 310         return -EINVAL;
 311 }
 312
 313
 314 int pvr2_debugifc_docmd(struct pvr2_hdw *hdw,const char *buf,
 315                         unsigned int count)
 316 {
 317         unsigned int bcnt = 0;
 318         int ret;
 319
 320         while (count) {
 321                 for (bcnt = 0; bcnt < count; bcnt++) {
 322                         if (buf[bcnt] == '\n') break;
 323                 }
 324
 325                 ret = pvr2_debugifc_do1cmd(hdw,buf,bcnt);
 326                 if (ret < 0) return ret;
 327                 if (bcnt < count) bcnt++;
 328                 buf += bcnt;
 329                 count -= bcnt;
 330         }
 331
 332         return 0;
 333 }
 334
 335
 336 /*
 337   Stuff for Emacs to see, in order to encourage consistent editing style:
 338   *** Local Variables: ***
 339   *** mode: c ***
 340   *** fill-column: 75 ***
 341   *** tab-width: 8 ***
 342   *** c-basic-offset: 8 ***
 343   *** End: ***
 344   */