-/************************** EEPROM BANDS ****************************
- *
- * The iwl4965_eeprom_band definitions below provide the mapping from the
- * EEPROM contents to the specific channel number supported for each
- * band.
- *
- * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
- * definition below maps to physical channel 42 in the 5.2GHz spectrum.
- * The specific geography and calibration information for that channel
- * is contained in the eeprom map itself.
- *
- * During init, we copy the eeprom information and channel map
- * information into priv->channel_info_24/52 and priv->channel_map_24/52
- *
- * channel_map_24/52 provides the index in the channel_info array for a
- * given channel. We have to have two separate maps as there is channel
- * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
- * band_2
- *
- * A value of 0xff stored in the channel_map indicates that the channel
- * is not supported by the hardware at all.
- *
- * A value of 0xfe in the channel_map indicates that the channel is not
- * valid for Tx with the current hardware. This means that
- * while the system can tune and receive on a given channel, it may not
- * be able to associate or transmit any frames on that
- * channel. There is no corresponding channel information for that
- * entry.
- *
- *********************************************************************/
-
-/* 2.4 GHz */
-static const u8 iwl4965_eeprom_band_1[14] = {
- 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
-};
-
-/* 5.2 GHz bands */
-static const u8 iwl4965_eeprom_band_2[] = { /* 4915-5080MHz */
- 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
-};
-
-static const u8 iwl4965_eeprom_band_3[] = { /* 5170-5320MHz */
- 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
-};
-
-static const u8 iwl4965_eeprom_band_4[] = { /* 5500-5700MHz */
- 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
-};
-
-static const u8 iwl4965_eeprom_band_5[] = { /* 5725-5825MHz */
- 145, 149, 153, 157, 161, 165
-};
-
-static u8 iwl4965_eeprom_band_6[] = { /* 2.4 FAT channel */
- 1, 2, 3, 4, 5, 6, 7
-};
-
-static u8 iwl4965_eeprom_band_7[] = { /* 5.2 FAT channel */
- 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
-};
-
-static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
- int band,
- int *eeprom_ch_count,
- const struct iwl4965_eeprom_channel
- **eeprom_ch_info,
- const u8 **eeprom_ch_index)
-{
- switch (band) {
- case 1: /* 2.4GHz band */
- *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
- *eeprom_ch_info = priv->eeprom.band_1_channels;
- *eeprom_ch_index = iwl4965_eeprom_band_1;
- break;
- case 2: /* 4.9GHz band */
- *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
- *eeprom_ch_info = priv->eeprom.band_2_channels;
- *eeprom_ch_index = iwl4965_eeprom_band_2;
- break;
- case 3: /* 5.2GHz band */
- *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
- *eeprom_ch_info = priv->eeprom.band_3_channels;
- *eeprom_ch_index = iwl4965_eeprom_band_3;
- break;
- case 4: /* 5.5GHz band */
- *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
- *eeprom_ch_info = priv->eeprom.band_4_channels;
- *eeprom_ch_index = iwl4965_eeprom_band_4;
- break;
- case 5: /* 5.7GHz band */
- *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
- *eeprom_ch_info = priv->eeprom.band_5_channels;
- *eeprom_ch_index = iwl4965_eeprom_band_5;
- break;
- case 6: /* 2.4GHz FAT channels */
- *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
- *eeprom_ch_info = priv->eeprom.band_24_channels;
- *eeprom_ch_index = iwl4965_eeprom_band_6;
- break;
- case 7: /* 5 GHz FAT channels */
- *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
- *eeprom_ch_info = priv->eeprom.band_52_channels;
- *eeprom_ch_index = iwl4965_eeprom_band_7;
- break;
- default:
- BUG();
- return;
- }
-}
-
-/**
- * iwl4965_get_channel_info - Find driver's private channel info
- *
- * Based on band and channel number.
- */
-const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
- int phymode, u16 channel)
-{
- int i;
-
- switch (phymode) {
- case MODE_IEEE80211A:
- for (i = 14; i < priv->channel_count; i++) {
- if (priv->channel_info[i].channel == channel)
- return &priv->channel_info[i];
- }
- break;
-
- case MODE_IEEE80211B:
- case MODE_IEEE80211G:
- if (channel >= 1 && channel <= 14)
- return &priv->channel_info[channel - 1];
- break;
-
- }
-
- return NULL;
-}
-
-#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
- ? # x " " : "")
-
-/**
- * iwl4965_init_channel_map - Set up driver's info for all possible channels
- */
-static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
-{
- int eeprom_ch_count = 0;
- const u8 *eeprom_ch_index = NULL;
- const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
- int band, ch;
- struct iwl4965_channel_info *ch_info;
-
- if (priv->channel_count) {
- IWL_DEBUG_INFO("Channel map already initialized.\n");
- return 0;
- }
-
- if (priv->eeprom.version < 0x2f) {
- IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
- priv->eeprom.version);
- return -EINVAL;
- }
-
- IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
-
- priv->channel_count =
- ARRAY_SIZE(iwl4965_eeprom_band_1) +
- ARRAY_SIZE(iwl4965_eeprom_band_2) +
- ARRAY_SIZE(iwl4965_eeprom_band_3) +
- ARRAY_SIZE(iwl4965_eeprom_band_4) +
- ARRAY_SIZE(iwl4965_eeprom_band_5);
-
- IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
-
- priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
- priv->channel_count, GFP_KERNEL);
- if (!priv->channel_info) {
- IWL_ERROR("Could not allocate channel_info\n");
- priv->channel_count = 0;
- return -ENOMEM;
- }
-
- ch_info = priv->channel_info;
-
- /* Loop through the 5 EEPROM bands adding them in order to the
- * channel map we maintain (that contains additional information than
- * what just in the EEPROM) */
- for (band = 1; band <= 5; band++) {
-
- iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
- &eeprom_ch_info, &eeprom_ch_index);
-
- /* Loop through each band adding each of the channels */
- for (ch = 0; ch < eeprom_ch_count; ch++) {
- ch_info->channel = eeprom_ch_index[ch];
- ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
- MODE_IEEE80211A;
-
- /* permanently store EEPROM's channel regulatory flags
- * and max power in channel info database. */
- ch_info->eeprom = eeprom_ch_info[ch];
-
- /* Copy the run-time flags so they are there even on
- * invalid channels */
- ch_info->flags = eeprom_ch_info[ch].flags;
-
- if (!(is_channel_valid(ch_info))) {
- IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
- "No traffic\n",
- ch_info->channel,
- ch_info->flags,
- is_channel_a_band(ch_info) ?
- "5.2" : "2.4");
- ch_info++;
- continue;
- }
-
- /* Initialize regulatory-based run-time data */
- ch_info->max_power_avg = ch_info->curr_txpow =
- eeprom_ch_info[ch].max_power_avg;
- ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
- ch_info->min_power = 0;
-
- IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
- " %ddBm): Ad-Hoc %ssupported\n",
- ch_info->channel,
- is_channel_a_band(ch_info) ?
- "5.2" : "2.4",
- CHECK_AND_PRINT(IBSS),
- CHECK_AND_PRINT(ACTIVE),
- CHECK_AND_PRINT(RADAR),
- CHECK_AND_PRINT(WIDE),
- CHECK_AND_PRINT(NARROW),
- CHECK_AND_PRINT(DFS),
- eeprom_ch_info[ch].flags,
- eeprom_ch_info[ch].max_power_avg,
- ((eeprom_ch_info[ch].
- flags & EEPROM_CHANNEL_IBSS)
- && !(eeprom_ch_info[ch].
- flags & EEPROM_CHANNEL_RADAR))
- ? "" : "not ");
-
- /* Set the user_txpower_limit to the highest power
- * supported by any channel */
- if (eeprom_ch_info[ch].max_power_avg >
- priv->user_txpower_limit)
- priv->user_txpower_limit =
- eeprom_ch_info[ch].max_power_avg;
-
- ch_info++;
- }
- }
-
- /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
- for (band = 6; band <= 7; band++) {
- int phymode;
- u8 fat_extension_chan;
-
- iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
- &eeprom_ch_info, &eeprom_ch_index);
-
- /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
- phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
-
- /* Loop through each band adding each of the channels */
- for (ch = 0; ch < eeprom_ch_count; ch++) {
-
- if ((band == 6) &&
- ((eeprom_ch_index[ch] == 5) ||
- (eeprom_ch_index[ch] == 6) ||
- (eeprom_ch_index[ch] == 7)))
- fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
- else
- fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
-
- /* Set up driver's info for lower half */
- iwl4965_set_fat_chan_info(priv, phymode,
- eeprom_ch_index[ch],
- &(eeprom_ch_info[ch]),
- fat_extension_chan);
-
- /* Set up driver's info for upper half */
- iwl4965_set_fat_chan_info(priv, phymode,
- (eeprom_ch_index[ch] + 4),
- &(eeprom_ch_info[ch]),
- HT_IE_EXT_CHANNEL_BELOW);
- }
- }
-
- return 0;
-}
-
-/*
- * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
- */
-static void iwl4965_free_channel_map(struct iwl4965_priv *priv)
-{
- kfree(priv->channel_info);
- priv->channel_count = 0;
-}
-