/* NVM offsets (in words) definitions */
enum wkp_nvm_offsets {
/* NVM HW-Section offset (in words) definitions */
+ SUBSYSTEM_ID = 0x0A,
HW_ADDR = 0x15,
/* NVM SW-Section offset (in words) definitions */
static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
struct iwl_nvm_data *data,
const __le16 * const nvm_ch_flags,
- bool lar_supported)
+ bool lar_supported, bool no_wide_in_5ghz)
{
int ch_idx;
int n_channels = 0;
struct ieee80211_channel *channel;
u16 ch_flags;
- bool is_5ghz;
int num_of_ch, num_2ghz_channels;
const u8 *nvm_chan;
}
for (ch_idx = 0; ch_idx < num_of_ch; ch_idx++) {
+ bool is_5ghz = (ch_idx >= num_2ghz_channels);
+
ch_flags = __le16_to_cpup(nvm_ch_flags + ch_idx);
- if (ch_idx >= num_2ghz_channels &&
- !data->sku_cap_band_52GHz_enable)
+ if (is_5ghz && !data->sku_cap_band_52GHz_enable)
continue;
+ /* workaround to disable wide channels in 5GHz */
+ if (no_wide_in_5ghz && is_5ghz) {
+ ch_flags &= ~(NVM_CHANNEL_40MHZ |
+ NVM_CHANNEL_80MHZ |
+ NVM_CHANNEL_160MHZ);
+ }
+
if (ch_flags & NVM_CHANNEL_160MHZ)
data->vht160_supported = true;
n_channels++;
channel->hw_value = nvm_chan[ch_idx];
- channel->band = (ch_idx < num_2ghz_channels) ?
- NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
+ channel->band = is_5ghz ?
+ NL80211_BAND_5GHZ : NL80211_BAND_2GHZ;
channel->center_freq =
ieee80211_channel_to_frequency(
channel->hw_value, channel->band);
* is not used in mvm, and is used for backwards compatibility
*/
channel->max_power = IWL_DEFAULT_MAX_TX_POWER;
- is_5ghz = channel->band == NL80211_BAND_5GHZ;
/* don't put limitations in case we're using LAR */
if (!lar_supported)
static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
struct iwl_nvm_data *data,
const __le16 *ch_section,
- u8 tx_chains, u8 rx_chains, bool lar_supported)
+ u8 tx_chains, u8 rx_chains, bool lar_supported,
+ bool no_wide_in_5ghz)
{
int n_channels;
int n_used = 0;
if (cfg->device_family != IWL_DEVICE_FAMILY_8000)
n_channels = iwl_init_channel_map(
dev, cfg, data,
- &ch_section[NVM_CHANNELS], lar_supported);
+ &ch_section[NVM_CHANNELS], lar_supported,
+ no_wide_in_5ghz);
else
n_channels = iwl_init_channel_map(
dev, cfg, data,
&ch_section[NVM_CHANNELS_FAMILY_8000],
- lar_supported);
+ lar_supported,
+ no_wide_in_5ghz);
sband = &data->bands[NL80211_BAND_2GHZ];
sband->band = NL80211_BAND_2GHZ;
return 0;
}
+static bool
+iwl_nvm_no_wide_in_5ghz(struct device *dev, const struct iwl_cfg *cfg,
+ const __le16 *nvm_hw)
+{
+ /*
+ * Workaround a bug in Indonesia SKUs where the regulatory in
+ * some 7000-family OTPs erroneously allow wide channels in
+ * 5GHz. To check for Indonesia, we take the SKU value from
+ * bits 1-4 in the subsystem ID and check if it is either 5 or
+ * 9. In those cases, we need to force-disable wide channels
+ * in 5GHz otherwise the FW will throw a sysassert when we try
+ * to use them.
+ */
+ if (cfg->device_family == IWL_DEVICE_FAMILY_7000) {
+ /*
+ * Unlike the other sections in the NVM, the hw
+ * section uses big-endian.
+ */
+ u16 subsystem_id = be16_to_cpup((const __be16 *)nvm_hw
+ + SUBSYSTEM_ID);
+ u8 sku = (subsystem_id & 0x1e) >> 1;
+
+ if (sku == 5 || sku == 9) {
+ IWL_DEBUG_EEPROM(dev,
+ "disabling wide channels in 5GHz (0x%0x %d)\n",
+ subsystem_id, sku);
+ return true;
+ }
+ }
+
+ return false;
+}
+
struct iwl_nvm_data *
iwl_parse_nvm_data(struct iwl_trans *trans, const struct iwl_cfg *cfg,
const __le16 *nvm_hw, const __le16 *nvm_sw,
struct device *dev = trans->dev;
struct iwl_nvm_data *data;
bool lar_enabled;
+ bool no_wide_in_5ghz = iwl_nvm_no_wide_in_5ghz(dev, cfg, nvm_hw);
u32 sku, radio_cfg;
u16 lar_config;
const __le16 *ch_section;
}
iwl_init_sbands(dev, cfg, data, ch_section, tx_chains, rx_chains,
- lar_fw_supported && lar_enabled);
+ lar_fw_supported && lar_enabled, no_wide_in_5ghz);
data->calib_version = 255;
return data;