kernel/sound/firewire/dice/dice-proc.c

   1 /*
   2  * dice_proc.c - a part of driver for Dice based devices
   3  *
   4  * Copyright (c) Clemens Ladisch
   5  * Copyright (c) 2014 Takashi Sakamoto
   6  *
   7  * Licensed under the terms of the GNU General Public License, version 2.
   8  */
   9
  10 #include "dice.h"
  11
  12 static int dice_proc_read_mem(struct snd_dice *dice, void *buffer,
  13                               unsigned int offset_q, unsigned int quadlets)
  14 {
  15         unsigned int i;
  16         int err;
  17
  18         err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
  19                                  DICE_PRIVATE_SPACE + 4 * offset_q,
  20                                  buffer, 4 * quadlets, 0);
  21         if (err < 0)
  22                 return err;
  23
  24         for (i = 0; i < quadlets; ++i)
  25                 be32_to_cpus(&((u32 *)buffer)[i]);
  26
  27         return 0;
  28 }
  29
  30 static const char *str_from_array(const char *const strs[], unsigned int count,
  31                                   unsigned int i)
  32 {
  33         if (i < count)
  34                 return strs[i];
  35
  36         return "(unknown)";
  37 }
  38
  39 static void dice_proc_fixup_string(char *s, unsigned int size)
  40 {
  41         unsigned int i;
  42
  43         for (i = 0; i < size; i += 4)
  44                 cpu_to_le32s((u32 *)(s + i));
  45
  46         for (i = 0; i < size - 2; ++i) {
  47                 if (s[i] == '\0')
  48                         return;
  49                 if (s[i] == '\\' && s[i + 1] == '\\') {
  50                         s[i + 2] = '\0';
  51                         return;
  52                 }
  53         }
  54         s[size - 1] = '\0';
  55 }
  56
  57 static void dice_proc_read(struct snd_info_entry *entry,
  58                            struct snd_info_buffer *buffer)
  59 {
  60         static const char *const section_names[5] = {
  61                 "global", "tx", "rx", "ext_sync", "unused2"
  62         };
  63         static const char *const clock_sources[] = {
  64                 "aes1", "aes2", "aes3", "aes4", "aes", "adat", "tdif",
  65                 "wc", "arx1", "arx2", "arx3", "arx4", "internal"
  66         };
  67         static const char *const rates[] = {
  68                 "32000", "44100", "48000", "88200", "96000", "176400", "192000",
  69                 "any low", "any mid", "any high", "none"
  70         };
  71         struct snd_dice *dice = entry->private_data;
  72         u32 sections[ARRAY_SIZE(section_names) * 2];
  73         struct {
  74                 u32 number;
  75                 u32 size;
  76         } tx_rx_header;
  77         union {
  78                 struct {
  79                         u32 owner_hi, owner_lo;
  80                         u32 notification;
  81                         char nick_name[NICK_NAME_SIZE];
  82                         u32 clock_select;
  83                         u32 enable;
  84                         u32 status;
  85                         u32 extended_status;
  86                         u32 sample_rate;
  87                         u32 version;
  88                         u32 clock_caps;
  89                         char clock_source_names[CLOCK_SOURCE_NAMES_SIZE];
  90                 } global;
  91                 struct {
  92                         u32 iso;
  93                         u32 number_audio;
  94                         u32 number_midi;
  95                         u32 speed;
  96                         char names[TX_NAMES_SIZE];
  97                         u32 ac3_caps;
  98                         u32 ac3_enable;
  99                 } tx;
 100                 struct {
 101                         u32 iso;
 102                         u32 seq_start;
 103                         u32 number_audio;
 104                         u32 number_midi;
 105                         char names[RX_NAMES_SIZE];
 106                         u32 ac3_caps;
 107                         u32 ac3_enable;
 108                 } rx;
 109                 struct {
 110                         u32 clock_source;
 111                         u32 locked;
 112                         u32 rate;
 113                         u32 adat_user_data;
 114                 } ext_sync;
 115         } buf;
 116         unsigned int quadlets, stream, i;
 117
 118         if (dice_proc_read_mem(dice, sections, 0, ARRAY_SIZE(sections)) < 0)
 119                 return;
 120         snd_iprintf(buffer, "sections:\n");
 121         for (i = 0; i < ARRAY_SIZE(section_names); ++i)
 122                 snd_iprintf(buffer, "  %s: offset %u, size %u\n",
 123                             section_names[i],
 124                             sections[i * 2], sections[i * 2 + 1]);
 125
 126         quadlets = min_t(u32, sections[1], sizeof(buf.global) / 4);
 127         if (dice_proc_read_mem(dice, &buf.global, sections[0], quadlets) < 0)
 128                 return;
 129         snd_iprintf(buffer, "global:\n");
 130         snd_iprintf(buffer, "  owner: %04x:%04x%08x\n",
 131                     buf.global.owner_hi >> 16,
 132                     buf.global.owner_hi & 0xffff, buf.global.owner_lo);
 133         snd_iprintf(buffer, "  notification: %08x\n", buf.global.notification);
 134         dice_proc_fixup_string(buf.global.nick_name, NICK_NAME_SIZE);
 135         snd_iprintf(buffer, "  nick name: %s\n", buf.global.nick_name);
 136         snd_iprintf(buffer, "  clock select: %s %s\n",
 137                     str_from_array(clock_sources, ARRAY_SIZE(clock_sources),
 138                                    buf.global.clock_select & CLOCK_SOURCE_MASK),
 139                     str_from_array(rates, ARRAY_SIZE(rates),
 140                                    (buf.global.clock_select & CLOCK_RATE_MASK)
 141                                    >> CLOCK_RATE_SHIFT));
 142         snd_iprintf(buffer, "  enable: %u\n", buf.global.enable);
 143         snd_iprintf(buffer, "  status: %slocked %s\n",
 144                     buf.global.status & STATUS_SOURCE_LOCKED ? "" : "un",
 145                     str_from_array(rates, ARRAY_SIZE(rates),
 146                                    (buf.global.status &
 147                                     STATUS_NOMINAL_RATE_MASK)
 148                                    >> CLOCK_RATE_SHIFT));
 149         snd_iprintf(buffer, "  ext status: %08x\n", buf.global.extended_status);
 150         snd_iprintf(buffer, "  sample rate: %u\n", buf.global.sample_rate);
 151         snd_iprintf(buffer, "  version: %u.%u.%u.%u\n",
 152                     (buf.global.version >> 24) & 0xff,
 153                     (buf.global.version >> 16) & 0xff,
 154                     (buf.global.version >>  8) & 0xff,
 155                     (buf.global.version >>  0) & 0xff);
 156         if (quadlets >= 90) {
 157                 snd_iprintf(buffer, "  clock caps:");
 158                 for (i = 0; i <= 6; ++i)
 159                         if (buf.global.clock_caps & (1 << i))
 160                                 snd_iprintf(buffer, " %s", rates[i]);
 161                 for (i = 0; i <= 12; ++i)
 162                         if (buf.global.clock_caps & (1 << (16 + i)))
 163                                 snd_iprintf(buffer, " %s", clock_sources[i]);
 164                 snd_iprintf(buffer, "\n");
 165                 dice_proc_fixup_string(buf.global.clock_source_names,
 166                                        CLOCK_SOURCE_NAMES_SIZE);
 167                 snd_iprintf(buffer, "  clock source names: %s\n",
 168                             buf.global.clock_source_names);
 169         }
 170
 171         if (dice_proc_read_mem(dice, &tx_rx_header, sections[2], 2) < 0)
 172                 return;
 173         quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.tx) / 4);
 174         for (stream = 0; stream < tx_rx_header.number; ++stream) {
 175                 if (dice_proc_read_mem(dice, &buf.tx, sections[2] + 2 +
 176                                        stream * tx_rx_header.size,
 177                                        quadlets) < 0)
 178                         break;
 179                 snd_iprintf(buffer, "tx %u:\n", stream);
 180                 snd_iprintf(buffer, "  iso channel: %d\n", (int)buf.tx.iso);
 181                 snd_iprintf(buffer, "  audio channels: %u\n",
 182                             buf.tx.number_audio);
 183                 snd_iprintf(buffer, "  midi ports: %u\n", buf.tx.number_midi);
 184                 snd_iprintf(buffer, "  speed: S%u\n", 100u << buf.tx.speed);
 185                 if (quadlets >= 68) {
 186                         dice_proc_fixup_string(buf.tx.names, TX_NAMES_SIZE);
 187                         snd_iprintf(buffer, "  names: %s\n", buf.tx.names);
 188                 }
 189                 if (quadlets >= 70) {
 190                         snd_iprintf(buffer, "  ac3 caps: %08x\n",
 191                                     buf.tx.ac3_caps);
 192                         snd_iprintf(buffer, "  ac3 enable: %08x\n",
 193                                     buf.tx.ac3_enable);
 194                 }
 195         }
 196
 197         if (dice_proc_read_mem(dice, &tx_rx_header, sections[4], 2) < 0)
 198                 return;
 199         quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.rx) / 4);
 200         for (stream = 0; stream < tx_rx_header.number; ++stream) {
 201                 if (dice_proc_read_mem(dice, &buf.rx, sections[4] + 2 +
 202                                        stream * tx_rx_header.size,
 203                                        quadlets) < 0)
 204                         break;
 205                 snd_iprintf(buffer, "rx %u:\n", stream);
 206                 snd_iprintf(buffer, "  iso channel: %d\n", (int)buf.rx.iso);
 207                 snd_iprintf(buffer, "  sequence start: %u\n", buf.rx.seq_start);
 208                 snd_iprintf(buffer, "  audio channels: %u\n",
 209                             buf.rx.number_audio);
 210                 snd_iprintf(buffer, "  midi ports: %u\n", buf.rx.number_midi);
 211                 if (quadlets >= 68) {
 212                         dice_proc_fixup_string(buf.rx.names, RX_NAMES_SIZE);
 213                         snd_iprintf(buffer, "  names: %s\n", buf.rx.names);
 214                 }
 215                 if (quadlets >= 70) {
 216                         snd_iprintf(buffer, "  ac3 caps: %08x\n",
 217                                     buf.rx.ac3_caps);
 218                         snd_iprintf(buffer, "  ac3 enable: %08x\n",
 219                                     buf.rx.ac3_enable);
 220                 }
 221         }
 222
 223         quadlets = min_t(u32, sections[7], sizeof(buf.ext_sync) / 4);
 224         if (quadlets >= 4) {
 225                 if (dice_proc_read_mem(dice, &buf.ext_sync,
 226                                        sections[6], 4) < 0)
 227                         return;
 228                 snd_iprintf(buffer, "ext status:\n");
 229                 snd_iprintf(buffer, "  clock source: %s\n",
 230                             str_from_array(clock_sources,
 231                                            ARRAY_SIZE(clock_sources),
 232                                            buf.ext_sync.clock_source));
 233                 snd_iprintf(buffer, "  locked: %u\n", buf.ext_sync.locked);
 234                 snd_iprintf(buffer, "  rate: %s\n",
 235                             str_from_array(rates, ARRAY_SIZE(rates),
 236                                            buf.ext_sync.rate));
 237                 snd_iprintf(buffer, "  adat user data: ");
 238                 if (buf.ext_sync.adat_user_data & ADAT_USER_DATA_NO_DATA)
 239                         snd_iprintf(buffer, "-\n");
 240                 else
 241                         snd_iprintf(buffer, "%x\n",
 242                                     buf.ext_sync.adat_user_data);
 243         }
 244 }
 245
 246 void snd_dice_create_proc(struct snd_dice *dice)
 247 {
 248         struct snd_info_entry *entry;
 249
 250         if (!snd_card_proc_new(dice->card, "dice", &entry))
 251                 snd_info_set_text_ops(entry, dice, dice_proc_read);
 252 }