From 902b6667d3d17ac53ec62c036cd2bcf713c29d86 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Tue, 24 Nov 2009 11:33:27 +0800 Subject: [PATCH] iwmc3200wifi: Parse HT channels EEPROM entries The fat channels eeprom entries let us know if 11n is enabled or not. We update our wiphy supported bands based on that. Signed-off-by: Samuel Ortiz Signed-off-by: Zhu Yi Signed-off-by: John W. Linville --- drivers/net/wireless/iwmc3200wifi/eeprom.c | 30 ++++++++++++++++++++++++++++++ drivers/net/wireless/iwmc3200wifi/eeprom.h | 28 ++++++++++++++++++++-------- drivers/net/wireless/iwmc3200wifi/main.c | 6 ++++++ 3 files changed, 56 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/iwmc3200wifi/eeprom.c b/drivers/net/wireless/iwmc3200wifi/eeprom.c index 365910f..c574f58 100644 --- a/drivers/net/wireless/iwmc3200wifi/eeprom.c +++ b/drivers/net/wireless/iwmc3200wifi/eeprom.c @@ -66,6 +66,10 @@ static struct iwm_eeprom_entry eeprom_map[] = { [IWM_EEPROM_SKU_CAP] = {"SKU capabilities", IWM_EEPROM_SKU_CAP_OFF, IWM_EEPROM_SKU_CAP_LEN}, + [IWM_EEPROM_FAT_CHANNELS_CAP] = + {"HT channels capabilities", IWM_EEPROM_FAT_CHANNELS_CAP_OFF, + IWM_EEPROM_FAT_CHANNELS_CAP_LEN}, + [IWM_EEPROM_CALIB_RXIQ_OFFSET] = {"RX IQ offset", IWM_EEPROM_CALIB_RXIQ_OFF, IWM_EEPROM_INDIRECT_LEN}, @@ -146,6 +150,32 @@ u8 *iwm_eeprom_access(struct iwm_priv *iwm, u8 eeprom_id) return iwm->eeprom + eeprom_map[eeprom_id].offset; } +int iwm_eeprom_fat_channels(struct iwm_priv *iwm) +{ + struct wiphy *wiphy = iwm_to_wiphy(iwm); + struct ieee80211_supported_band *band; + u16 *channels, i; + + channels = (u16 *)iwm_eeprom_access(iwm, IWM_EEPROM_FAT_CHANNELS_CAP); + if (IS_ERR(channels)) + return PTR_ERR(channels); + + band = wiphy->bands[IEEE80211_BAND_2GHZ]; + band->ht_cap.ht_supported = true; + + for (i = 0; i < IWM_EEPROM_FAT_CHANNELS_24; i++) + if (!(channels[i] & IWM_EEPROM_FAT_CHANNEL_ENABLED)) + band->ht_cap.ht_supported = false; + + band = wiphy->bands[IEEE80211_BAND_5GHZ]; + band->ht_cap.ht_supported = true; + for (i = IWM_EEPROM_FAT_CHANNELS_24; i < IWM_EEPROM_FAT_CHANNELS; i++) + if (!(channels[i] & IWM_EEPROM_FAT_CHANNEL_ENABLED)) + band->ht_cap.ht_supported = false; + + return 0; +} + int iwm_eeprom_init(struct iwm_priv *iwm) { int i, ret = 0; diff --git a/drivers/net/wireless/iwmc3200wifi/eeprom.h b/drivers/net/wireless/iwmc3200wifi/eeprom.h index cdb31a6..0f7f226 100644 --- a/drivers/net/wireless/iwmc3200wifi/eeprom.h +++ b/drivers/net/wireless/iwmc3200wifi/eeprom.h @@ -48,6 +48,7 @@ enum { IWM_EEPROM_CARD_ID, IWM_EEPROM_RADIO_CONF, IWM_EEPROM_SKU_CAP, + IWM_EEPROM_FAT_CHANNELS_CAP, IWM_EEPROM_INDIRECT_OFFSET, IWM_EEPROM_CALIB_RXIQ_OFFSET = IWM_EEPROM_INDIRECT_OFFSET, @@ -58,14 +59,15 @@ enum { IWM_EEPROM_LAST, }; -#define IWM_EEPROM_SIG_OFF 0x00 -#define IWM_EEPROM_VERSION_OFF (0x54 << 1) -#define IWM_EEPROM_OEM_HW_VERSION_OFF (0x56 << 1) -#define IWM_EEPROM_MAC_VERSION_OFF (0x30 << 1) -#define IWM_EEPROM_CARD_ID_OFF (0x5d << 1) -#define IWM_EEPROM_RADIO_CONF_OFF (0x58 << 1) -#define IWM_EEPROM_SKU_CAP_OFF (0x55 << 1) -#define IWM_EEPROM_CALIB_CONFIG_OFF (0x7c << 1) +#define IWM_EEPROM_SIG_OFF 0x00 +#define IWM_EEPROM_VERSION_OFF (0x54 << 1) +#define IWM_EEPROM_OEM_HW_VERSION_OFF (0x56 << 1) +#define IWM_EEPROM_MAC_VERSION_OFF (0x30 << 1) +#define IWM_EEPROM_CARD_ID_OFF (0x5d << 1) +#define IWM_EEPROM_RADIO_CONF_OFF (0x58 << 1) +#define IWM_EEPROM_SKU_CAP_OFF (0x55 << 1) +#define IWM_EEPROM_CALIB_CONFIG_OFF (0x7c << 1) +#define IWM_EEPROM_FAT_CHANNELS_CAP_OFF (0xde << 1) #define IWM_EEPROM_SIG_LEN 4 #define IWM_EEPROM_VERSION_LEN 2 @@ -74,6 +76,7 @@ enum { #define IWM_EEPROM_CARD_ID_LEN 2 #define IWM_EEPROM_RADIO_CONF_LEN 2 #define IWM_EEPROM_SKU_CAP_LEN 2 +#define IWM_EEPROM_FAT_CHANNELS_CAP_LEN 40 #define IWM_EEPROM_INDIRECT_LEN 2 #define IWM_MAX_EEPROM_DATA_LEN 240 @@ -87,6 +90,14 @@ enum { #define IWM_EEPROM_SKU_CAP_BAND_52GHZ (1 << 5) #define IWM_EEPROM_SKU_CAP_11N_ENABLE (1 << 6) +#define IWM_EEPROM_FAT_CHANNELS 20 +/* 2.4 gHz FAT primary channels: 1, 2, 3, 4, 5, 6, 7, 8, 9 */ +#define IWM_EEPROM_FAT_CHANNELS_24 9 +/* 5.2 gHz FAT primary channels: 36,44,52,60,100,108,116,124,132,149,157 */ +#define IWM_EEPROM_FAT_CHANNELS_52 11 + +#define IWM_EEPROM_FAT_CHANNEL_ENABLED (1 << 0) + enum { IWM_EEPROM_CALIB_CAL_HDR, IWM_EEPROM_CALIB_TX_POWER, @@ -110,5 +121,6 @@ struct iwm_eeprom_entry { int iwm_eeprom_init(struct iwm_priv *iwm); void iwm_eeprom_exit(struct iwm_priv *iwm); u8 *iwm_eeprom_access(struct iwm_priv *iwm, u8 eeprom_id); +int iwm_eeprom_fat_channels(struct iwm_priv *iwm); #endif diff --git a/drivers/net/wireless/iwmc3200wifi/main.c b/drivers/net/wireless/iwmc3200wifi/main.c index 75f105a..365f3fc 100644 --- a/drivers/net/wireless/iwmc3200wifi/main.c +++ b/drivers/net/wireless/iwmc3200wifi/main.c @@ -691,6 +691,12 @@ static int __iwm_up(struct iwm_priv *iwm) goto err_disable; } + ret = iwm_eeprom_fat_channels(iwm); + if (ret) { + IWM_ERR(iwm, "Couldnt read HT channels EEPROM entries\n"); + goto err_fw; + } + snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "L%s_U%s", iwm->lmac_version, iwm->umac_version); -- 2.7.4