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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 <avraham.stern@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Avraham Stern 2015-03-22 13:11:01 +02:00 committed by Emmanuel Grumbach
parent 9d012d0dbe
commit 17564dde60
3 changed files with 92 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
drivers/net/wireless/iwlwifi/iwl-drv.c
View File

@ -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:

27
drivers/net/wireless/iwlwifi/iwl-fw-file.h
View File

@ -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__ */

25
drivers/net/wireless/iwlwifi/iwl-fw.h
View File

@ -190,6 +190,30 @@ struct iwl_fw_cscheme_list {
struct iwl_fw_cipher_scheme cs[];
} __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
*
@ -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)