From 17564dde6024fcfe74cc0512e7837175aa5283d9 Mon Sep 17 00:00:00 2001 From: Avraham Stern Date: Sun, 22 Mar 2015 13:11:01 +0200 Subject: [PATCH] iwlwifi: add new TLV capability flag for gscan support Gscan is a scan feature which is supported on certain devices only, hence the need for a TLV flag for it. For devices that support gscan store the gscan capabilities advertised by the FW so the driver can report it to upper layers. Signed-off-by: Avraham Stern Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/iwl-drv.c | 40 ++++++++++++++++++++++++++++++ drivers/net/wireless/iwlwifi/iwl-fw-file.h | 27 ++++++++++++++++++++ drivers/net/wireless/iwlwifi/iwl-fw.h | 25 +++++++++++++++++++ 3 files changed, 92 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c index 721d3cb94386..a86aa5bcee7d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-drv.c +++ b/drivers/net/wireless/iwlwifi/iwl-drv.c @@ -372,6 +372,30 @@ static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len) return 0; } +static int iwl_store_gscan_capa(struct iwl_fw *fw, const u8 *data, + const u32 len) +{ + struct iwl_fw_gscan_capabilities *fw_capa = (void *)data; + struct iwl_gscan_capabilities *capa = &fw->gscan_capa; + + if (len < sizeof(*fw_capa)) + return -EINVAL; + + capa->max_scan_cache_size = le32_to_cpu(fw_capa->max_scan_cache_size); + capa->max_scan_buckets = le32_to_cpu(fw_capa->max_scan_buckets); + capa->max_ap_cache_per_scan = + le32_to_cpu(fw_capa->max_ap_cache_per_scan); + capa->max_rssi_sample_size = le32_to_cpu(fw_capa->max_rssi_sample_size); + capa->max_scan_reporting_threshold = + le32_to_cpu(fw_capa->max_scan_reporting_threshold); + capa->max_hotlist_aps = le32_to_cpu(fw_capa->max_hotlist_aps); + capa->max_significant_change_aps = + le32_to_cpu(fw_capa->max_significant_change_aps); + capa->max_bssid_history_entries = + le32_to_cpu(fw_capa->max_bssid_history_entries); + return 0; +} + /* * Gets uCode section from tlv. */ @@ -581,6 +605,7 @@ static int iwl_parse_tlv_firmware(struct iwl_drv *drv, int num_of_cpus; bool usniffer_images = false; bool usniffer_req = false; + bool gscan_capa = false; if (len < sizeof(*ucode)) { IWL_ERR(drv, "uCode has invalid length: %zd\n", len); @@ -991,6 +1016,11 @@ static int iwl_parse_tlv_firmware(struct iwl_drv *drv, drv->fw.sdio_adma_addr = le32_to_cpup((__le32 *)tlv_data); break; + case IWL_UCODE_TLV_FW_GSCAN_CAPA: + if (iwl_store_gscan_capa(&drv->fw, tlv_data, tlv_len)) + goto invalid_tlv_len; + gscan_capa = true; + break; default: IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type); break; @@ -1009,6 +1039,16 @@ static int iwl_parse_tlv_firmware(struct iwl_drv *drv, return -EINVAL; } + /* + * If ucode advertises that it supports GSCAN but GSCAN + * capabilities TLV is not present, warn and continue without GSCAN. + */ + if (fw_has_capa(capa, IWL_UCODE_TLV_CAPA_GSCAN_SUPPORT) && + WARN(!gscan_capa, + "GSCAN is supported but capabilities TLV is unavailable\n")) + __clear_bit((__force long)IWL_UCODE_TLV_CAPA_GSCAN_SUPPORT, + capa->_capa); + return 0; invalid_tlv_len: diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/iwlwifi/iwl-fw-file.h index 5d7f2d9cf180..d1c5b90eb6b4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw-file.h @@ -139,6 +139,7 @@ enum iwl_ucode_tlv_type { IWL_UCODE_TLV_FW_DBG_DEST = 38, IWL_UCODE_TLV_FW_DBG_CONF = 39, IWL_UCODE_TLV_FW_DBG_TRIGGER = 40, + IWL_UCODE_TLV_FW_GSCAN_CAPA = 50, }; struct iwl_ucode_tlv { @@ -306,6 +307,7 @@ typedef unsigned int __bitwise__ iwl_ucode_tlv_capa_t; * IWL_UCODE_TLV_API_WIFI_MCC_UPDATE. When either is set, multi-source LAR * is supported. * @IWL_UCODE_TLV_CAPA_BT_COEX_RRC: supports BT Coex RRC + * @IWL_UCODE_TLV_CAPA_GSCAN_SUPPORT: supports gscan */ enum iwl_ucode_tlv_capa { IWL_UCODE_TLV_CAPA_D0I3_SUPPORT = (__force iwl_ucode_tlv_capa_t)0, @@ -327,6 +329,7 @@ enum iwl_ucode_tlv_capa { IWL_UCODE_TLV_CAPA_BT_COEX_PLCR = (__force iwl_ucode_tlv_capa_t)28, IWL_UCODE_TLV_CAPA_LAR_MULTI_MCC = (__force iwl_ucode_tlv_capa_t)29, IWL_UCODE_TLV_CAPA_BT_COEX_RRC = (__force iwl_ucode_tlv_capa_t)30, + IWL_UCODE_TLV_CAPA_GSCAN_SUPPORT = (__force iwl_ucode_tlv_capa_t)31, }; /* The default calibrate table size if not specified by firmware file */ @@ -728,4 +731,28 @@ struct iwl_fw_dbg_conf_tlv { struct iwl_fw_dbg_conf_hcmd hcmd; } __packed; +/** + * struct iwl_fw_gscan_capabilities - gscan capabilities supported by FW + * @max_scan_cache_size: total space allocated for scan results (in bytes). + * @max_scan_buckets: maximum number of channel buckets. + * @max_ap_cache_per_scan: maximum number of APs that can be stored per scan. + * @max_rssi_sample_size: number of RSSI samples used for averaging RSSI. + * @max_scan_reporting_threshold: max possible report threshold. in percentage. + * @max_hotlist_aps: maximum number of entries for hotlist APs. + * @max_significant_change_aps: maximum number of entries for significant + * change APs. + * @max_bssid_history_entries: number of BSSID/RSSI entries that the device can + * hold. + */ +struct iwl_fw_gscan_capabilities { + __le32 max_scan_cache_size; + __le32 max_scan_buckets; + __le32 max_ap_cache_per_scan; + __le32 max_rssi_sample_size; + __le32 max_scan_reporting_threshold; + __le32 max_hotlist_aps; + __le32 max_significant_change_aps; + __le32 max_bssid_history_entries; +} __packed; + #endif /* __iwl_fw_file_h__ */ diff --git a/drivers/net/wireless/iwlwifi/iwl-fw.h b/drivers/net/wireless/iwlwifi/iwl-fw.h index 224c7f45d2f1..0d9d6f51766e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw.h @@ -191,6 +191,30 @@ struct iwl_fw_cscheme_list { } __packed; /** + * struct iwl_gscan_capabilities - gscan capabilities supported by FW + * @max_scan_cache_size: total space allocated for scan results (in bytes). + * @max_scan_buckets: maximum number of channel buckets. + * @max_ap_cache_per_scan: maximum number of APs that can be stored per scan. + * @max_rssi_sample_size: number of RSSI samples used for averaging RSSI. + * @max_scan_reporting_threshold: max possible report threshold. in percentage. + * @max_hotlist_aps: maximum number of entries for hotlist APs. + * @max_significant_change_aps: maximum number of entries for significant + * change APs. + * @max_bssid_history_entries: number of BSSID/RSSI entries that the device can + * hold. + */ +struct iwl_gscan_capabilities { + u32 max_scan_cache_size; + u32 max_scan_buckets; + u32 max_ap_cache_per_scan; + u32 max_rssi_sample_size; + u32 max_scan_reporting_threshold; + u32 max_hotlist_aps; + u32 max_significant_change_aps; + u32 max_bssid_history_entries; +}; + +/** * struct iwl_fw - variables associated with the firmware * * @ucode_ver: ucode version from the ucode file @@ -248,6 +272,7 @@ struct iwl_fw { struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX]; size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX]; u8 dbg_dest_reg_num; + struct iwl_gscan_capabilities gscan_capa; }; static inline const char *get_fw_dbg_mode_string(int mode) -- 2.11.0