drivers/media/usb/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         int radix = 10;
  98         if ((count >= 2) && (buf[0] == '0') &&
  99             ((buf[1] == 'x') || (buf[1] == 'X'))) {
 100                 radix = 16;
 101                 count -= 2;
 102                 buf += 2;
 103         } else if ((count >= 1) && (buf[0] == '0')) {
 104                 radix = 8;
 105         }
 106
 107         while (count--) {
 108                 int val = hex_to_bin(*buf++);
 109                 if (val < 0 || val >= radix)
 110                         return -EINVAL;
 111                 result *= radix;
 112                 result += val;
 113         }
 114         *num_ptr = result;
 115         return 0;
 116 }
 117
 118
 119 static int debugifc_match_keyword(const char *buf,unsigned int count,
 120                                   const char *keyword)
 121 {
 122         unsigned int kl;
 123         if (!keyword) return 0;
 124         kl = strlen(keyword);
 125         if (kl != count) return 0;
 126         return !memcmp(buf,keyword,kl);
 127 }
 128
 129
 130 int pvr2_debugifc_print_info(struct pvr2_hdw *hdw,char *buf,unsigned int acnt)
 131 {
 132         int bcnt = 0;
 133         int ccnt;
 134         ccnt = scnprintf(buf, acnt, "Driver hardware description: %s\n",
 135                          pvr2_hdw_get_desc(hdw));
 136         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 137         ccnt = scnprintf(buf,acnt,"Driver state info:\n");
 138         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 139         ccnt = pvr2_hdw_state_report(hdw,buf,acnt);
 140         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 141
 142         return bcnt;
 143 }
 144
 145
 146 int pvr2_debugifc_print_status(struct pvr2_hdw *hdw,
 147                                char *buf,unsigned int acnt)
 148 {
 149         int bcnt = 0;
 150         int ccnt;
 151         int ret;
 152         u32 gpio_dir,gpio_in,gpio_out;
 153         struct pvr2_stream_stats stats;
 154         struct pvr2_stream *sp;
 155
 156         ret = pvr2_hdw_is_hsm(hdw);
 157         ccnt = scnprintf(buf,acnt,"USB link speed: %s\n",
 158                          (ret < 0 ? "FAIL" : (ret ? "high" : "full")));
 159         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 160
 161         gpio_dir = 0; gpio_in = 0; gpio_out = 0;
 162         pvr2_hdw_gpio_get_dir(hdw,&gpio_dir);
 163         pvr2_hdw_gpio_get_out(hdw,&gpio_out);
 164         pvr2_hdw_gpio_get_in(hdw,&gpio_in);
 165         ccnt = scnprintf(buf,acnt,"GPIO state: dir=0x%x in=0x%x out=0x%x\n",
 166                          gpio_dir,gpio_in,gpio_out);
 167         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 168
 169         ccnt = scnprintf(buf,acnt,"Streaming is %s\n",
 170                          pvr2_hdw_get_streaming(hdw) ? "on" : "off");
 171         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 172
 173
 174         sp = pvr2_hdw_get_video_stream(hdw);
 175         if (sp) {
 176                 pvr2_stream_get_stats(sp, &stats, 0);
 177                 ccnt = scnprintf(
 178                         buf,acnt,
 179                         "Bytes streamed=%u URBs: queued=%u idle=%u ready=%u processed=%u failed=%u\n",
 180                         stats.bytes_processed,
 181                         stats.buffers_in_queue,
 182                         stats.buffers_in_idle,
 183                         stats.buffers_in_ready,
 184                         stats.buffers_processed,
 185                         stats.buffers_failed);
 186                 bcnt += ccnt; acnt -= ccnt; buf += ccnt;
 187         }
 188
 189         return bcnt;
 190 }
 191
 192
 193 static int pvr2_debugifc_do1cmd(struct pvr2_hdw *hdw,const char *buf,
 194                                 unsigned int count)
 195 {
 196         const char *wptr;
 197         unsigned int wlen;
 198         unsigned int scnt;
 199
 200         scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 201         if (!scnt) return 0;
 202         count -= scnt; buf += scnt;
 203         if (!wptr) return 0;
 204
 205         pvr2_trace(PVR2_TRACE_DEBUGIFC,"debugifc cmd: \"%.*s\"",wlen,wptr);
 206         if (debugifc_match_keyword(wptr,wlen,"reset")) {
 207                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 208                 if (!scnt) return -EINVAL;
 209                 count -= scnt; buf += scnt;
 210                 if (!wptr) return -EINVAL;
 211                 if (debugifc_match_keyword(wptr,wlen,"cpu")) {
 212                         pvr2_hdw_cpureset_assert(hdw,!0);
 213                         pvr2_hdw_cpureset_assert(hdw,0);
 214                         return 0;
 215                 } else if (debugifc_match_keyword(wptr,wlen,"bus")) {
 216                         pvr2_hdw_device_reset(hdw);
 217                 } else if (debugifc_match_keyword(wptr,wlen,"soft")) {
 218                         return pvr2_hdw_cmd_powerup(hdw);
 219                 } else if (debugifc_match_keyword(wptr,wlen,"deep")) {
 220                         return pvr2_hdw_cmd_deep_reset(hdw);
 221                 } else if (debugifc_match_keyword(wptr,wlen,"firmware")) {
 222                         return pvr2_upload_firmware2(hdw);
 223                 } else if (debugifc_match_keyword(wptr,wlen,"decoder")) {
 224                         return pvr2_hdw_cmd_decoder_reset(hdw);
 225                 } else if (debugifc_match_keyword(wptr,wlen,"worker")) {
 226                         return pvr2_hdw_untrip(hdw);
 227                 } else if (debugifc_match_keyword(wptr,wlen,"usbstats")) {
 228                         pvr2_stream_get_stats(pvr2_hdw_get_video_stream(hdw),
 229                                               NULL, !0);
 230                         return 0;
 231                 }
 232                 return -EINVAL;
 233         } else if (debugifc_match_keyword(wptr,wlen,"cpufw")) {
 234                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 235                 if (!scnt) return -EINVAL;
 236                 count -= scnt; buf += scnt;
 237                 if (!wptr) return -EINVAL;
 238                 if (debugifc_match_keyword(wptr,wlen,"fetch")) {
 239                         scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 240                         if (scnt && wptr) {
 241                                 count -= scnt; buf += scnt;
 242                                 if (debugifc_match_keyword(wptr, wlen,
 243                                                            "prom")) {
 244                                         pvr2_hdw_cpufw_set_enabled(hdw, 2, !0);
 245                                 } else if (debugifc_match_keyword(wptr, wlen,
 246                                                                   "ram8k")) {
 247                                         pvr2_hdw_cpufw_set_enabled(hdw, 0, !0);
 248                                 } else if (debugifc_match_keyword(wptr, wlen,
 249                                                                   "ram16k")) {
 250                                         pvr2_hdw_cpufw_set_enabled(hdw, 1, !0);
 251                                 } else {
 252                                         return -EINVAL;
 253                                 }
 254                         }
 255                         pvr2_hdw_cpufw_set_enabled(hdw,0,!0);
 256                         return 0;
 257                 } else if (debugifc_match_keyword(wptr,wlen,"done")) {
 258                         pvr2_hdw_cpufw_set_enabled(hdw,0,0);
 259                         return 0;
 260                 } else {
 261                         return -EINVAL;
 262                 }
 263         } else if (debugifc_match_keyword(wptr,wlen,"gpio")) {
 264                 int dir_fl = 0;
 265                 int ret;
 266                 u32 msk,val;
 267                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 268                 if (!scnt) return -EINVAL;
 269                 count -= scnt; buf += scnt;
 270                 if (!wptr) return -EINVAL;
 271                 if (debugifc_match_keyword(wptr,wlen,"dir")) {
 272                         dir_fl = !0;
 273                 } else if (!debugifc_match_keyword(wptr,wlen,"out")) {
 274                         return -EINVAL;
 275                 }
 276                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 277                 if (!scnt) return -EINVAL;
 278                 count -= scnt; buf += scnt;
 279                 if (!wptr) return -EINVAL;
 280                 ret = debugifc_parse_unsigned_number(wptr,wlen,&msk);
 281                 if (ret) return ret;
 282                 scnt = debugifc_isolate_word(buf,count,&wptr,&wlen);
 283                 if (wptr) {
 284                         ret = debugifc_parse_unsigned_number(wptr,wlen,&val);
 285                         if (ret) return ret;
 286                 } else {
 287                         val = msk;
 288                         msk = 0xffffffff;
 289                 }
 290                 if (dir_fl) {
 291                         ret = pvr2_hdw_gpio_chg_dir(hdw,msk,val);
 292                 } else {
 293                         ret = pvr2_hdw_gpio_chg_out(hdw,msk,val);
 294                 }
 295                 return ret;
 296         }
 297         pvr2_trace(PVR2_TRACE_DEBUGIFC,
 298                    "debugifc failed to recognize cmd: \"%.*s\"",wlen,wptr);
 299         return -EINVAL;
 300 }
 301
 302
 303 int pvr2_debugifc_docmd(struct pvr2_hdw *hdw,const char *buf,
 304                         unsigned int count)
 305 {
 306         unsigned int bcnt = 0;
 307         int ret;
 308
 309         while (count) {
 310                 for (bcnt = 0; bcnt < count; bcnt++) {
 311                         if (buf[bcnt] == '\n') break;
 312                 }
 313
 314                 ret = pvr2_debugifc_do1cmd(hdw,buf,bcnt);
 315                 if (ret < 0) return ret;
 316                 if (bcnt < count) bcnt++;
 317                 buf += bcnt;
 318                 count -= bcnt;
 319         }
 320
 321         return 0;
 322 }