Return-path: Received: from ebb05.tieto.com ([131.207.168.36]:57915 "EHLO ebb05.tieto.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933776Ab3HHIIe (ORCPT ); Thu, 8 Aug 2013 04:08:34 -0400 From: Michal Kazior To: CC: , Michal Kazior Subject: [RFC 3/3] ath10k: add support for HTT 3.0 Date: Thu, 8 Aug 2013 10:08:18 +0200 Message-ID: <1375949298-7159-4-git-send-email-michal.kazior@tieto.com> (sfid-20130808_100851_130293_373D0FED) In-Reply-To: <1375949298-7159-1-git-send-email-michal.kazior@tieto.com> References: <1375949298-7159-1-git-send-email-michal.kazior@tieto.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: New firmware comes with new HTT protocol version. In 3.0 the separate mgmt tx command has been removed. All traffic is to be pushed through data tx (tx_frm) command with a twist - FW seems to not be able (yet?) to access tx fragment table so for manamgement frames frame pointer is passed directly. Signed-off-by: Michal Kazior --- drivers/net/wireless/ath/ath10k/htt.c | 16 +++---- drivers/net/wireless/ath/ath10k/htt.h | 6 +-- drivers/net/wireless/ath/ath10k/htt_tx.c | 70 ++++++++++++++++++++---------- drivers/net/wireless/ath/ath10k/hw.h | 3 ++ drivers/net/wireless/ath/ath10k/mac.c | 11 ++++- 5 files changed, 69 insertions(+), 37 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/htt.c b/drivers/net/wireless/ath/ath10k/htt.c index 39342c5..44facc1 100644 --- a/drivers/net/wireless/ath/ath10k/htt.c +++ b/drivers/net/wireless/ath/ath10k/htt.c @@ -104,21 +104,15 @@ err_htc_attach: static int ath10k_htt_verify_version(struct ath10k_htt *htt) { - ath10k_dbg(ATH10K_DBG_HTT, - "htt target version %d.%d; host version %d.%d\n", - htt->target_version_major, - htt->target_version_minor, - HTT_CURRENT_VERSION_MAJOR, - HTT_CURRENT_VERSION_MINOR); - - if (htt->target_version_major != HTT_CURRENT_VERSION_MAJOR) { + ath10k_dbg(ATH10K_DBG_HTT, "htt target version %d.%d\n", + htt->target_version_major, htt->target_version_minor); + + if (htt->target_version_major != 2 && + htt->target_version_major != 3) { ath10k_err("htt major versions are incompatible!\n"); return -ENOTSUPP; } - if (htt->target_version_minor != HTT_CURRENT_VERSION_MINOR) - ath10k_warn("htt minor version differ but still compatible\n"); - return 0; } diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index de45d02..2488623 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -23,9 +23,6 @@ #include "htc.h" #include "rx_desc.h" -#define HTT_CURRENT_VERSION_MAJOR 2 -#define HTT_CURRENT_VERSION_MINOR 1 - enum htt_dbg_stats_type { HTT_DBG_STATS_WAL_PDEV_TXRX = 1 << 0, HTT_DBG_STATS_RX_REORDER = 1 << 1, @@ -45,6 +42,9 @@ enum htt_h2t_msg_type { /* host-to-target */ HTT_H2T_MSG_TYPE_SYNC = 4, HTT_H2T_MSG_TYPE_AGGR_CFG = 5, HTT_H2T_MSG_TYPE_FRAG_DESC_BANK_CFG = 6, + + /* This command is used for sending management frames in HTT < 3.0. + * HTT >= 3.0 uses TX_FRM for everything. */ HTT_H2T_MSG_TYPE_MGMT_TX = 7, HTT_H2T_NUM_MSGS /* keep this last */ diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c index 656c254..dce128a 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -401,10 +401,15 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) goto err; } - txfrag = dev_alloc_skb(frag_len); - if (!txfrag) { - res = -ENOMEM; - goto err; + /* Since HTT 3.0 there is no separate mgmt tx command. However in case + * of mgmt tx using TX_FRM there is not tx fragment list. Instead of tx + * fragment list host driver specifies directly frame pointer. */ + if (!(htt->target_version_major >= 3 && ieee80211_is_mgmt(hdr->frame_control))) { + txfrag = dev_alloc_skb(frag_len); + if (!txfrag) { + res = -ENOMEM; + goto err; + } } if (!IS_ALIGNED((unsigned long)txdesc->data, 4)) { @@ -427,23 +432,30 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) if (res) goto err; - /* tx fragment list must be terminated with zero-entry */ - skb_put(txfrag, frag_len); - tx_frags = (struct htt_data_tx_desc_frag *)txfrag->data; - tx_frags[0].paddr = __cpu_to_le32(ATH10K_SKB_CB(msdu)->paddr); - tx_frags[0].len = __cpu_to_le32(msdu->len); - tx_frags[1].paddr = __cpu_to_le32(0); - tx_frags[1].len = __cpu_to_le32(0); - - res = ath10k_skb_map(dev, txfrag); - if (res) - goto err; + /* Since HTT 3.0 there is no separate mgmt tx command. However in case + * of mgmt tx using TX_FRM there is not tx fragment list. Instead of tx + * fragment list host driver specifies directly frame pointer. */ + if (!(htt->target_version_major >= 3 && ieee80211_is_mgmt(hdr->frame_control))) { + /* tx fragment list must be terminated with zero-entry */ + skb_put(txfrag, frag_len); + tx_frags = (struct htt_data_tx_desc_frag *)txfrag->data; + tx_frags[0].paddr = __cpu_to_le32(ATH10K_SKB_CB(msdu)->paddr); + tx_frags[0].len = __cpu_to_le32(msdu->len); + tx_frags[1].paddr = __cpu_to_le32(0); + tx_frags[1].len = __cpu_to_le32(0); + + res = ath10k_skb_map(dev, txfrag); + if (res) + goto err; + + ath10k_dbg(ATH10K_DBG_HTT, "txfrag 0x%llx\n", + (unsigned long long) ATH10K_SKB_CB(txfrag)->paddr); + ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "txfrag: ", + txfrag->data, frag_len); + } - ath10k_dbg(ATH10K_DBG_HTT, "txfrag 0x%llx msdu 0x%llx\n", - (unsigned long long) ATH10K_SKB_CB(txfrag)->paddr, + ath10k_dbg(ATH10K_DBG_HTT, "msdu 0x%llx\n", (unsigned long long) ATH10K_SKB_CB(msdu)->paddr); - ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "txfrag: ", - txfrag->data, frag_len); ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "msdu: ", msdu->data, msdu->len); @@ -459,8 +471,16 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) if (!ieee80211_has_protected(hdr->frame_control)) flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT; flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT; - flags0 |= SM(ATH10K_HW_TXRX_NATIVE_WIFI, - HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); + + /* Since HTT 3.0 there is no separate mgmt tx command. However in case + * of mgmt tx using TX_FRM there is not tx fragment list. Instead of tx + * fragment list host driver specifies directly frame pointer. */ + if (htt->target_version_major >= 3 && ieee80211_is_mgmt(hdr->frame_control)) + flags0 |= SM(ATH10K_HW_TXRX_MGMT, + HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); + else + flags0 |= SM(ATH10K_HW_TXRX_NATIVE_WIFI, + HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); flags1 = 0; flags1 |= SM((u16)vdev_id, HTT_DATA_TX_DESC_FLAGS1_VDEV_ID); @@ -468,7 +488,13 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L3_OFFLOAD; flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD; - frags_paddr = ATH10K_SKB_CB(txfrag)->paddr; + /* Since HTT 3.0 there is no separate mgmt tx command. However in case + * of mgmt tx using TX_FRM there is not tx fragment list. Instead of tx + * fragment list host driver specifies directly frame pointer. */ + if (htt->target_version_major >= 3 && ieee80211_is_mgmt(hdr->frame_control)) + frags_paddr = ATH10K_SKB_CB(msdu)->paddr; + else + frags_paddr = ATH10K_SKB_CB(txfrag)->paddr; cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_TX_FRM; cmd->data_tx.flags0 = flags0; diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h index 44ed5af..9c5d6fc 100644 --- a/drivers/net/wireless/ath/ath10k/hw.h +++ b/drivers/net/wireless/ath/ath10k/hw.h @@ -53,6 +53,9 @@ enum ath10k_hw_txrx_mode { ATH10K_HW_TXRX_RAW = 0, ATH10K_HW_TXRX_NATIVE_WIFI = 1, ATH10K_HW_TXRX_ETHERNET = 2, + + /* Valid for HTT >= 3.0. Used for management frames in TX_FRM. */ + ATH10K_HW_TXRX_MGMT = 3, }; enum ath10k_mcast2ucast_mode { diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index fb1f24f..aca423c 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -1480,6 +1480,12 @@ static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb) struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; int ret; + if (ar->htt.target_version_major >= 3) { + /* Since HTT 3.0 there is no separate mgmt tx command */ + ret = ath10k_htt_tx(&ar->htt, skb); + goto exit; + } + if (ieee80211_is_mgmt(hdr->frame_control)) ret = ath10k_htt_mgmt_tx(&ar->htt, skb); else if (ieee80211_is_nullfunc(hdr->frame_control)) @@ -1491,6 +1497,7 @@ static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb) else ret = ath10k_htt_tx(&ar->htt, skb); +exit: if (ret) { ath10k_warn("tx failed (%d). dropping packet.\n", ret); ieee80211_free_txskb(ar->hw, skb); @@ -1726,7 +1733,9 @@ static void ath10k_tx(struct ieee80211_hw *hw, /* we must calculate tid before we apply qos workaround * as we'd lose the qos control field */ - if (ieee80211_is_data_qos(hdr->frame_control) && + if (ieee80211_is_mgmt(hdr->frame_control)) + tid = HTT_DATA_TX_EXT_TID_MGMT; + else if (ieee80211_is_data_qos(hdr->frame_control) && is_unicast_ether_addr(ieee80211_get_DA(hdr))) { u8 *qc = ieee80211_get_qos_ctl(hdr); tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; -- 1.7.9.5