From 8865bee4835441d9b3220d779d254d5856a68af0 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Wed, 24 Jul 2013 12:36:46 +0200 Subject: [PATCH] ath10k: detect the number of spatial streams supported by hw Until now ath10k assumed 3 spatial streams. However some devices support only 2 spatial streams. This patch improves performance on devices that don't support 3 spatial streams. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/core.h | 1 + drivers/net/wireless/ath/ath10k/mac.c | 19 +++++++++---------- drivers/net/wireless/ath/ath10k/wmi.c | 12 ++++++++++-- 3 files changed, 20 insertions(+), 12 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 9f21ecb239d7..ff42bb744d9e 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -285,6 +285,7 @@ struct ath10k { u32 hw_max_tx_power; u32 ht_cap_info; u32 vht_cap_info; + u32 num_rf_chains; struct targetdef *targetdef; struct hostdef *hostdef; diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 6e01ef6e376b..344ad2772de8 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -3093,19 +3093,18 @@ static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar) { struct ieee80211_sta_vht_cap vht_cap = {0}; u16 mcs_map; + int i; vht_cap.vht_supported = 1; vht_cap.cap = ar->vht_cap_info; - /* FIXME: check dynamically how many streams board supports */ - mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 | - IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 | - IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 | - IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | - IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | - IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | - IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | - IEEE80211_VHT_MCS_NOT_SUPPORTED << 14; + mcs_map = 0; + for (i = 0; i < 8; i++) { + if (i < ar->num_rf_chains) + mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2); + else + mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2); + } vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map); vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map); @@ -3168,7 +3167,7 @@ static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar) if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK) ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; - for (i = 0; i < WMI_MAX_SPATIAL_STREAM; i++) + for (i = 0; i < ar->num_rf_chains; i++) ht_cap.mcs.rx_mask[i] = 0xFF; ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index 5e4246015cdc..1cbcb2ea12f7 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -868,6 +868,13 @@ static void ath10k_wmi_service_ready_event_rx(struct ath10k *ar, (__le32_to_cpu(ev->sw_version_1) & 0xffff0000) >> 16; ar->fw_version_build = (__le32_to_cpu(ev->sw_version_1) & 0x0000ffff); ar->phy_capability = __le32_to_cpu(ev->phy_capability); + ar->num_rf_chains = __le32_to_cpu(ev->num_rf_chains); + + if (ar->num_rf_chains > WMI_MAX_SPATIAL_STREAM) { + ath10k_warn("hardware advertises support for more spatial streams than it should (%d > %d)\n", + ar->num_rf_chains, WMI_MAX_SPATIAL_STREAM); + ar->num_rf_chains = WMI_MAX_SPATIAL_STREAM; + } ar->ath_common.regulatory.current_rd = __le32_to_cpu(ev->hal_reg_capabilities.eeprom_rd); @@ -892,7 +899,7 @@ static void ath10k_wmi_service_ready_event_rx(struct ath10k *ar, } ath10k_dbg(ATH10K_DBG_WMI, - "wmi event service ready sw_ver 0x%08x sw_ver1 0x%08x abi_ver %u phy_cap 0x%08x ht_cap 0x%08x vht_cap 0x%08x vht_supp_msc 0x%08x sys_cap_info 0x%08x mem_reqs %u\n", + "wmi event service ready sw_ver 0x%08x sw_ver1 0x%08x abi_ver %u phy_cap 0x%08x ht_cap 0x%08x vht_cap 0x%08x vht_supp_msc 0x%08x sys_cap_info 0x%08x mem_reqs %u num_rf_chains %u\n", __le32_to_cpu(ev->sw_version), __le32_to_cpu(ev->sw_version_1), __le32_to_cpu(ev->abi_version), @@ -901,7 +908,8 @@ static void ath10k_wmi_service_ready_event_rx(struct ath10k *ar, __le32_to_cpu(ev->vht_cap_info), __le32_to_cpu(ev->vht_supp_mcs), __le32_to_cpu(ev->sys_cap_info), - __le32_to_cpu(ev->num_mem_reqs)); + __le32_to_cpu(ev->num_mem_reqs), + __le32_to_cpu(ev->num_rf_chains)); complete(&ar->wmi.service_ready); } -- 2.11.0