| /* |
| * Copyright (c) 2005-2011 Atheros Communications Inc. |
| * Copyright (c) 2011-2013 Qualcomm Atheros, Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/etherdevice.h> |
| #include "htt.h" |
| #include "mac.h" |
| #include "hif.h" |
| #include "txrx.h" |
| #include "debug.h" |
| |
| void __ath10k_htt_tx_dec_pending(struct ath10k_htt *htt, bool limit_mgmt_desc) |
| { |
| if (limit_mgmt_desc) |
| htt->num_pending_mgmt_tx--; |
| |
| htt->num_pending_tx--; |
| if (htt->num_pending_tx == htt->max_num_pending_tx - 1) |
| ath10k_mac_tx_unlock(htt->ar, ATH10K_TX_PAUSE_Q_FULL); |
| } |
| |
| static void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt, |
| bool limit_mgmt_desc) |
| { |
| spin_lock_bh(&htt->tx_lock); |
| __ath10k_htt_tx_dec_pending(htt, limit_mgmt_desc); |
| spin_unlock_bh(&htt->tx_lock); |
| } |
| |
| static int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt, |
| bool limit_mgmt_desc, bool is_probe_resp) |
| { |
| struct ath10k *ar = htt->ar; |
| int ret = 0; |
| |
| spin_lock_bh(&htt->tx_lock); |
| |
| if (htt->num_pending_tx >= htt->max_num_pending_tx) { |
| ret = -EBUSY; |
| goto exit; |
| } |
| |
| if (limit_mgmt_desc) { |
| if (is_probe_resp && (htt->num_pending_mgmt_tx > |
| ar->hw_params.max_probe_resp_desc_thres)) { |
| ret = -EBUSY; |
| goto exit; |
| } |
| htt->num_pending_mgmt_tx++; |
| } |
| |
| htt->num_pending_tx++; |
| if (htt->num_pending_tx == htt->max_num_pending_tx) |
| ath10k_mac_tx_lock(htt->ar, ATH10K_TX_PAUSE_Q_FULL); |
| |
| exit: |
| spin_unlock_bh(&htt->tx_lock); |
| return ret; |
| } |
| |
| int ath10k_htt_tx_alloc_msdu_id(struct ath10k_htt *htt, struct sk_buff *skb) |
| { |
| struct ath10k *ar = htt->ar; |
| int ret; |
| |
| lockdep_assert_held(&htt->tx_lock); |
| |
| ret = idr_alloc(&htt->pending_tx, skb, 0, |
| htt->max_num_pending_tx, GFP_ATOMIC); |
| |
| ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx alloc msdu_id %d\n", ret); |
| |
| return ret; |
| } |
| |
| void ath10k_htt_tx_free_msdu_id(struct ath10k_htt *htt, u16 msdu_id) |
| { |
| struct ath10k *ar = htt->ar; |
| |
| lockdep_assert_held(&htt->tx_lock); |
| |
| ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx free msdu_id %hu\n", msdu_id); |
| |
| idr_remove(&htt->pending_tx, msdu_id); |
| } |
| |
| int ath10k_htt_tx_alloc(struct ath10k_htt *htt) |
| { |
| struct ath10k *ar = htt->ar; |
| int ret, size; |
| |
| ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt tx max num pending tx %d\n", |
| htt->max_num_pending_tx); |
| |
| spin_lock_init(&htt->tx_lock); |
| idr_init(&htt->pending_tx); |
| |
| size = htt->max_num_pending_tx * sizeof(struct ath10k_htt_txbuf); |
| htt->txbuf.vaddr = dma_alloc_coherent(ar->dev, size, |
| &htt->txbuf.paddr, |
| GFP_KERNEL); |
| if (!htt->txbuf.vaddr) { |
| ath10k_err(ar, "failed to alloc tx buffer\n"); |
| ret = -ENOMEM; |
| goto free_idr_pending_tx; |
| } |
| |
| if (!ar->hw_params.continuous_frag_desc) |
| goto skip_frag_desc_alloc; |
| |
| size = htt->max_num_pending_tx * sizeof(struct htt_msdu_ext_desc); |
| htt->frag_desc.vaddr = dma_alloc_coherent(ar->dev, size, |
| &htt->frag_desc.paddr, |
| GFP_KERNEL); |
| if (!htt->frag_desc.vaddr) { |
| ath10k_warn(ar, "failed to alloc fragment desc memory\n"); |
| ret = -ENOMEM; |
| goto free_txbuf; |
| } |
| |
| skip_frag_desc_alloc: |
| return 0; |
| |
| free_txbuf: |
| size = htt->max_num_pending_tx * |
| sizeof(struct ath10k_htt_txbuf); |
| dma_free_coherent(htt->ar->dev, size, htt->txbuf.vaddr, |
| htt->txbuf.paddr); |
| free_idr_pending_tx: |
| idr_destroy(&htt->pending_tx); |
| return ret; |
| } |
| |
| static int ath10k_htt_tx_clean_up_pending(int msdu_id, void *skb, void *ctx) |
| { |
| struct ath10k *ar = ctx; |
| struct ath10k_htt *htt = &ar->htt; |
| struct htt_tx_done tx_done = {0}; |
| |
| ath10k_dbg(ar, ATH10K_DBG_HTT, "force cleanup msdu_id %hu\n", msdu_id); |
| |
| tx_done.discard = 1; |
| tx_done.msdu_id = msdu_id; |
| |
| ath10k_txrx_tx_unref(htt, &tx_done); |
| |
| return 0; |
| } |
| |
| void ath10k_htt_tx_free(struct ath10k_htt *htt) |
| { |
| int size; |
| |
| idr_for_each(&htt->pending_tx, ath10k_htt_tx_clean_up_pending, htt->ar); |
| idr_destroy(&htt->pending_tx); |
| |
| if (htt->txbuf.vaddr) { |
| size = htt->max_num_pending_tx * |
| sizeof(struct ath10k_htt_txbuf); |
| dma_free_coherent(htt->ar->dev, size, htt->txbuf.vaddr, |
| htt->txbuf.paddr); |
| } |
| |
| if (htt->frag_desc.vaddr) { |
| size = htt->max_num_pending_tx * |
| sizeof(struct htt_msdu_ext_desc); |
| dma_free_coherent(htt->ar->dev, size, htt->frag_desc.vaddr, |
| htt->frag_desc.paddr); |
| } |
| } |
| |
| void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb) |
| { |
| dev_kfree_skb_any(skb); |
| } |
| |
| void ath10k_htt_hif_tx_complete(struct ath10k *ar, struct sk_buff *skb) |
| { |
| dev_kfree_skb_any(skb); |
| } |
| EXPORT_SYMBOL(ath10k_htt_hif_tx_complete); |
| |
| int ath10k_htt_h2t_ver_req_msg(struct ath10k_htt *htt) |
| { |
| struct ath10k *ar = htt->ar; |
| struct sk_buff *skb; |
| struct htt_cmd *cmd; |
| int len = 0; |
| int ret; |
| |
| len += sizeof(cmd->hdr); |
| len += sizeof(cmd->ver_req); |
| |
| skb = ath10k_htc_alloc_skb(ar, len); |
| if (!skb) |
| return -ENOMEM; |
| |
| skb_put(skb, len); |
| cmd = (struct htt_cmd *)skb->data; |
| cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_VERSION_REQ; |
| |
| ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb); |
| if (ret) { |
| dev_kfree_skb_any(skb); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int ath10k_htt_h2t_stats_req(struct ath10k_htt *htt, u8 mask, u64 cookie) |
| { |
| struct ath10k *ar = htt->ar; |
| struct htt_stats_req *req; |
| struct sk_buff *skb; |
| struct htt_cmd *cmd; |
| int len = 0, ret; |
| |
| len += sizeof(cmd->hdr); |
| len += sizeof(cmd->stats_req); |
| |
| skb = ath10k_htc_alloc_skb(ar, len); |
| if (!skb) |
| return -ENOMEM; |
| |
| skb_put(skb, len); |
| cmd = (struct htt_cmd *)skb->data; |
| cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_STATS_REQ; |
| |
| req = &cmd->stats_req; |
| |
| memset(req, 0, sizeof(*req)); |
| |
| /* currently we support only max 8 bit masks so no need to worry |
| * about endian support */ |
| req->upload_types[0] = mask; |
| req->reset_types[0] = mask; |
| req->stat_type = HTT_STATS_REQ_CFG_STAT_TYPE_INVALID; |
| req->cookie_lsb = cpu_to_le32(cookie & 0xffffffff); |
| req->cookie_msb = cpu_to_le32((cookie & 0xffffffff00000000ULL) >> 32); |
| |
| ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb); |
| if (ret) { |
| ath10k_warn(ar, "failed to send htt type stats request: %d", |
| ret); |
| dev_kfree_skb_any(skb); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int ath10k_htt_send_frag_desc_bank_cfg(struct ath10k_htt *htt) |
| { |
| struct ath10k *ar = htt->ar; |
| struct sk_buff *skb; |
| struct htt_cmd *cmd; |
| int ret, size; |
| |
| if (!ar->hw_params.continuous_frag_desc) |
| return 0; |
| |
| if (!htt->frag_desc.paddr) { |
| ath10k_warn(ar, "invalid frag desc memory\n"); |
| return -EINVAL; |
| } |
| |
| size = sizeof(cmd->hdr) + sizeof(cmd->frag_desc_bank_cfg); |
| skb = ath10k_htc_alloc_skb(ar, size); |
| if (!skb) |
| return -ENOMEM; |
| |
| skb_put(skb, size); |
| cmd = (struct htt_cmd *)skb->data; |
| cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_FRAG_DESC_BANK_CFG; |
| cmd->frag_desc_bank_cfg.info = 0; |
| cmd->frag_desc_bank_cfg.num_banks = 1; |
| cmd->frag_desc_bank_cfg.desc_size = sizeof(struct htt_msdu_ext_desc); |
| cmd->frag_desc_bank_cfg.bank_base_addrs[0] = |
| __cpu_to_le32(htt->frag_desc.paddr); |
| cmd->frag_desc_bank_cfg.bank_id[0].bank_min_id = 0; |
| cmd->frag_desc_bank_cfg.bank_id[0].bank_max_id = |
| __cpu_to_le16(htt->max_num_pending_tx - 1); |
| |
| ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb); |
| if (ret) { |
| ath10k_warn(ar, "failed to send frag desc bank cfg request: %d\n", |
| ret); |
| dev_kfree_skb_any(skb); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int ath10k_htt_send_rx_ring_cfg_ll(struct ath10k_htt *htt) |
| { |
| struct ath10k *ar = htt->ar; |
| struct sk_buff *skb; |
| struct htt_cmd *cmd; |
| struct htt_rx_ring_setup_ring *ring; |
| const int num_rx_ring = 1; |
| u16 flags; |
| u32 fw_idx; |
| int len; |
| int ret; |
| |
| /* |
| * the HW expects the buffer to be an integral number of 4-byte |
| * "words" |
| */ |
| BUILD_BUG_ON(!IS_ALIGNED(HTT_RX_BUF_SIZE, 4)); |
| BUILD_BUG_ON((HTT_RX_BUF_SIZE & HTT_MAX_CACHE_LINE_SIZE_MASK) != 0); |
| |
| len = sizeof(cmd->hdr) + sizeof(cmd->rx_setup.hdr) |
| + (sizeof(*ring) * num_rx_ring); |
| skb = ath10k_htc_alloc_skb(ar, len); |
| if (!skb) |
| return -ENOMEM; |
| |
| skb_put(skb, len); |
| |
| cmd = (struct htt_cmd *)skb->data; |
| ring = &cmd->rx_setup.rings[0]; |
| |
| cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_RX_RING_CFG; |
| cmd->rx_setup.hdr.num_rings = 1; |
| |
| /* FIXME: do we need all of this? */ |
| flags = 0; |
| flags |= HTT_RX_RING_FLAGS_MAC80211_HDR; |
| flags |= HTT_RX_RING_FLAGS_MSDU_PAYLOAD; |
| flags |= HTT_RX_RING_FLAGS_PPDU_START; |
| flags |= HTT_RX_RING_FLAGS_PPDU_END; |
| flags |= HTT_RX_RING_FLAGS_MPDU_START; |
| flags |= HTT_RX_RING_FLAGS_MPDU_END; |
| flags |= HTT_RX_RING_FLAGS_MSDU_START; |
| flags |= HTT_RX_RING_FLAGS_MSDU_END; |
| flags |= HTT_RX_RING_FLAGS_RX_ATTENTION; |
| flags |= HTT_RX_RING_FLAGS_FRAG_INFO; |
| flags |= HTT_RX_RING_FLAGS_UNICAST_RX; |
| flags |= HTT_RX_RING_FLAGS_MULTICAST_RX; |
| flags |= HTT_RX_RING_FLAGS_CTRL_RX; |
| flags |= HTT_RX_RING_FLAGS_MGMT_RX; |
| flags |= HTT_RX_RING_FLAGS_NULL_RX; |
| flags |= HTT_RX_RING_FLAGS_PHY_DATA_RX; |
| |
| fw_idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr); |
| |
| ring->fw_idx_shadow_reg_paddr = |
| __cpu_to_le32(htt->rx_ring.alloc_idx.paddr); |
| ring->rx_ring_base_paddr = __cpu_to_le32(htt->rx_ring.base_paddr); |
| ring->rx_ring_len = __cpu_to_le16(htt->rx_ring.size); |
| ring->rx_ring_bufsize = __cpu_to_le16(HTT_RX_BUF_SIZE); |
| ring->flags = __cpu_to_le16(flags); |
| ring->fw_idx_init_val = __cpu_to_le16(fw_idx); |
| |
| #define desc_offset(x) (offsetof(struct htt_rx_desc, x) / 4) |
| |
| ring->mac80211_hdr_offset = __cpu_to_le16(desc_offset(rx_hdr_status)); |
| ring->msdu_payload_offset = __cpu_to_le16(desc_offset(msdu_payload)); |
| ring->ppdu_start_offset = __cpu_to_le16(desc_offset(ppdu_start)); |
| ring->ppdu_end_offset = __cpu_to_le16(desc_offset(ppdu_end)); |
| ring->mpdu_start_offset = __cpu_to_le16(desc_offset(mpdu_start)); |
| ring->mpdu_end_offset = __cpu_to_le16(desc_offset(mpdu_end)); |
| ring->msdu_start_offset = __cpu_to_le16(desc_offset(msdu_start)); |
| ring->msdu_end_offset = __cpu_to_le16(desc_offset(msdu_end)); |
| ring->rx_attention_offset = __cpu_to_le16(desc_offset(attention)); |
| ring->frag_info_offset = __cpu_to_le16(desc_offset(frag_info)); |
| |
| #undef desc_offset |
| |
| ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb); |
| if (ret) { |
| dev_kfree_skb_any(skb); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int ath10k_htt_h2t_aggr_cfg_msg(struct ath10k_htt *htt, |
| u8 max_subfrms_ampdu, |
| u8 max_subfrms_amsdu) |
| { |
| struct ath10k *ar = htt->ar; |
| struct htt_aggr_conf *aggr_conf; |
| struct sk_buff *skb; |
| struct htt_cmd *cmd; |
| int len; |
| int ret; |
| |
| /* Firmware defaults are: amsdu = 3 and ampdu = 64 */ |
| |
| if (max_subfrms_ampdu == 0 || max_subfrms_ampdu > 64) |
| return -EINVAL; |
| |
| if (max_subfrms_amsdu == 0 || max_subfrms_amsdu > 31) |
| return -EINVAL; |
| |
| len = sizeof(cmd->hdr); |
| len += sizeof(cmd->aggr_conf); |
| |
| skb = ath10k_htc_alloc_skb(ar, len); |
| if (!skb) |
| return -ENOMEM; |
| |
| skb_put(skb, len); |
| cmd = (struct htt_cmd *)skb->data; |
| cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_AGGR_CFG; |
| |
| aggr_conf = &cmd->aggr_conf; |
| aggr_conf->max_num_ampdu_subframes = max_subfrms_ampdu; |
| aggr_conf->max_num_amsdu_subframes = max_subfrms_amsdu; |
| |
| ath10k_dbg(ar, ATH10K_DBG_HTT, "htt h2t aggr cfg msg amsdu %d ampdu %d", |
| aggr_conf->max_num_amsdu_subframes, |
| aggr_conf->max_num_ampdu_subframes); |
| |
| ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb); |
| if (ret) { |
| dev_kfree_skb_any(skb); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static u8 ath10k_htt_tx_get_vdev_id(struct ath10k *ar, struct sk_buff *skb) |
| { |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb); |
| struct ath10k_vif *arvif = (void *)cb->vif->drv_priv; |
| |
| if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) |
| return ar->scan.vdev_id; |
| else if (cb->vif) |
| return arvif->vdev_id; |
| else if (ar->monitor_started) |
| return ar->monitor_vdev_id; |
| else |
| return 0; |
| } |
| |
| static u8 ath10k_htt_tx_get_tid(struct sk_buff *skb, bool is_eth) |
| { |
| struct ieee80211_hdr *hdr = (void *)skb->data; |
| struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb); |
| |
| if (!is_eth && ieee80211_is_mgmt(hdr->frame_control)) |
| return HTT_DATA_TX_EXT_TID_MGMT; |
| else if (cb->flags & ATH10K_SKB_F_QOS) |
| return skb->priority % IEEE80211_QOS_CTL_TID_MASK; |
| else |
| return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST; |
| } |
| |
| int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) |
| { |
| struct ath10k *ar = htt->ar; |
| struct device *dev = ar->dev; |
| struct sk_buff *txdesc = NULL; |
| struct htt_cmd *cmd; |
| struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu); |
| u8 vdev_id = ath10k_htt_tx_get_vdev_id(ar, msdu); |
| int len = 0; |
| int msdu_id = -1; |
| int res; |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; |
| bool limit_mgmt_desc = false; |
| bool is_probe_resp = false; |
| |
| if (ar->hw_params.max_probe_resp_desc_thres) { |
| limit_mgmt_desc = true; |
| |
| if (ieee80211_is_probe_resp(hdr->frame_control)) |
| is_probe_resp = true; |
| } |
| |
| res = ath10k_htt_tx_inc_pending(htt, limit_mgmt_desc, is_probe_resp); |
| |
| if (res) |
| goto err; |
| |
| len += sizeof(cmd->hdr); |
| len += sizeof(cmd->mgmt_tx); |
| |
| spin_lock_bh(&htt->tx_lock); |
| res = ath10k_htt_tx_alloc_msdu_id(htt, msdu); |
| spin_unlock_bh(&htt->tx_lock); |
| if (res < 0) |
| goto err_tx_dec; |
| |
| msdu_id = res; |
| |
| if ((ieee80211_is_action(hdr->frame_control) || |
| ieee80211_is_deauth(hdr->frame_control) || |
| ieee80211_is_disassoc(hdr->frame_control)) && |
| ieee80211_has_protected(hdr->frame_control)) { |
| skb_put(msdu, IEEE80211_CCMP_MIC_LEN); |
| } |
| |
| txdesc = ath10k_htc_alloc_skb(ar, len); |
| if (!txdesc) { |
| res = -ENOMEM; |
| goto err_free_msdu_id; |
| } |
| |
| skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len, |
| DMA_TO_DEVICE); |
| res = dma_mapping_error(dev, skb_cb->paddr); |
| if (res) { |
| res = -EIO; |
| goto err_free_txdesc; |
| } |
| |
| skb_put(txdesc, len); |
| cmd = (struct htt_cmd *)txdesc->data; |
| memset(cmd, 0, len); |
| |
| cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_MGMT_TX; |
| cmd->mgmt_tx.msdu_paddr = __cpu_to_le32(ATH10K_SKB_CB(msdu)->paddr); |
| cmd->mgmt_tx.len = __cpu_to_le32(msdu->len); |
| cmd->mgmt_tx.desc_id = __cpu_to_le32(msdu_id); |
| cmd->mgmt_tx.vdev_id = __cpu_to_le32(vdev_id); |
| memcpy(cmd->mgmt_tx.hdr, msdu->data, |
| min_t(int, msdu->len, HTT_MGMT_FRM_HDR_DOWNLOAD_LEN)); |
| |
| res = ath10k_htc_send(&htt->ar->htc, htt->eid, txdesc); |
| if (res) |
| goto err_unmap_msdu; |
| |
| return 0; |
| |
| err_unmap_msdu: |
| dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); |
| err_free_txdesc: |
| dev_kfree_skb_any(txdesc); |
| err_free_msdu_id: |
| spin_lock_bh(&htt->tx_lock); |
| ath10k_htt_tx_free_msdu_id(htt, msdu_id); |
| spin_unlock_bh(&htt->tx_lock); |
| err_tx_dec: |
| ath10k_htt_tx_dec_pending(htt, limit_mgmt_desc); |
| err: |
| return res; |
| } |
| |
| int ath10k_htt_tx(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode, |
| struct sk_buff *msdu) |
| { |
| struct ath10k *ar = htt->ar; |
| struct device *dev = ar->dev; |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(msdu); |
| struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu); |
| struct ath10k_hif_sg_item sg_items[2]; |
| struct ath10k_htt_txbuf *txbuf; |
| struct htt_data_tx_desc_frag *frags; |
| bool is_eth = (txmode == ATH10K_HW_TXRX_ETHERNET); |
| u8 vdev_id = ath10k_htt_tx_get_vdev_id(ar, msdu); |
| u8 tid = ath10k_htt_tx_get_tid(msdu, is_eth); |
| int prefetch_len; |
| int res; |
| u8 flags0 = 0; |
| u16 msdu_id, flags1 = 0; |
| u16 freq = 0; |
| u32 frags_paddr = 0; |
| u32 txbuf_paddr; |
| struct htt_msdu_ext_desc *ext_desc = NULL; |
| bool limit_mgmt_desc = false; |
| bool is_probe_resp = false; |
| |
| if (unlikely(ieee80211_is_mgmt(hdr->frame_control)) && |
| ar->hw_params.max_probe_resp_desc_thres) { |
| limit_mgmt_desc = true; |
| |
| if (ieee80211_is_probe_resp(hdr->frame_control)) |
| is_probe_resp = true; |
| } |
| |
| res = ath10k_htt_tx_inc_pending(htt, limit_mgmt_desc, is_probe_resp); |
| if (res) |
| goto err; |
| |
| spin_lock_bh(&htt->tx_lock); |
| res = ath10k_htt_tx_alloc_msdu_id(htt, msdu); |
| spin_unlock_bh(&htt->tx_lock); |
| if (res < 0) |
| goto err_tx_dec; |
| |
| msdu_id = res; |
| |
| prefetch_len = min(htt->prefetch_len, msdu->len); |
| prefetch_len = roundup(prefetch_len, 4); |
| |
| txbuf = &htt->txbuf.vaddr[msdu_id]; |
| txbuf_paddr = htt->txbuf.paddr + |
| (sizeof(struct ath10k_htt_txbuf) * msdu_id); |
| |
| if ((ieee80211_is_action(hdr->frame_control) || |
| ieee80211_is_deauth(hdr->frame_control) || |
| ieee80211_is_disassoc(hdr->frame_control)) && |
| ieee80211_has_protected(hdr->frame_control)) { |
| skb_put(msdu, IEEE80211_CCMP_MIC_LEN); |
| } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) && |
| txmode == ATH10K_HW_TXRX_RAW && |
| ieee80211_has_protected(hdr->frame_control)) { |
| skb_put(msdu, IEEE80211_CCMP_MIC_LEN); |
| } |
| |
| skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len, |
| DMA_TO_DEVICE); |
| res = dma_mapping_error(dev, skb_cb->paddr); |
| if (res) { |
| res = -EIO; |
| goto err_free_msdu_id; |
| } |
| |
| if (unlikely(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN)) |
| freq = ar->scan.roc_freq; |
| |
| switch (txmode) { |
| case ATH10K_HW_TXRX_RAW: |
| case ATH10K_HW_TXRX_NATIVE_WIFI: |
| flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT; |
| /* pass through */ |
| case ATH10K_HW_TXRX_ETHERNET: |
| if (ar->hw_params.continuous_frag_desc) { |
| memset(&htt->frag_desc.vaddr[msdu_id], 0, |
| sizeof(struct htt_msdu_ext_desc)); |
| frags = (struct htt_data_tx_desc_frag *) |
| &htt->frag_desc.vaddr[msdu_id].frags; |
| ext_desc = &htt->frag_desc.vaddr[msdu_id]; |
| frags[0].tword_addr.paddr_lo = |
| __cpu_to_le32(skb_cb->paddr); |
| frags[0].tword_addr.paddr_hi = 0; |
| frags[0].tword_addr.len_16 = __cpu_to_le16(msdu->len); |
| |
| frags_paddr = htt->frag_desc.paddr + |
| (sizeof(struct htt_msdu_ext_desc) * msdu_id); |
| } else { |
| frags = txbuf->frags; |
| frags[0].dword_addr.paddr = |
| __cpu_to_le32(skb_cb->paddr); |
| frags[0].dword_addr.len = __cpu_to_le32(msdu->len); |
| frags[1].dword_addr.paddr = 0; |
| frags[1].dword_addr.len = 0; |
| |
| frags_paddr = txbuf_paddr; |
| } |
| flags0 |= SM(txmode, HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); |
| break; |
| case ATH10K_HW_TXRX_MGMT: |
| flags0 |= SM(ATH10K_HW_TXRX_MGMT, |
| HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); |
| flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT; |
| |
| frags_paddr = skb_cb->paddr; |
| break; |
| } |
| |
| /* Normally all commands go through HTC which manages tx credits for |
| * each endpoint and notifies when tx is completed. |
| * |
| * HTT endpoint is creditless so there's no need to care about HTC |
| * flags. In that case it is trivial to fill the HTC header here. |
| * |
| * MSDU transmission is considered completed upon HTT event. This |
| * implies no relevant resources can be freed until after the event is |
| * received. That's why HTC tx completion handler itself is ignored by |
| * setting NULL to transfer_context for all sg items. |
| * |
| * There is simply no point in pushing HTT TX_FRM through HTC tx path |
| * as it's a waste of resources. By bypassing HTC it is possible to |
| * avoid extra memory allocations, compress data structures and thus |
| * improve performance. */ |
| |
| txbuf->htc_hdr.eid = htt->eid; |
| txbuf->htc_hdr.len = __cpu_to_le16(sizeof(txbuf->cmd_hdr) + |
| sizeof(txbuf->cmd_tx) + |
| prefetch_len); |
| txbuf->htc_hdr.flags = 0; |
| |
| if (skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) |
| flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT; |
| |
| flags1 |= SM((u16)vdev_id, HTT_DATA_TX_DESC_FLAGS1_VDEV_ID); |
| flags1 |= SM((u16)tid, HTT_DATA_TX_DESC_FLAGS1_EXT_TID); |
| if (msdu->ip_summed == CHECKSUM_PARTIAL && |
| !test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) { |
| flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L3_OFFLOAD; |
| flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD; |
| if (ar->hw_params.continuous_frag_desc) |
| ext_desc->flags |= HTT_MSDU_CHECKSUM_ENABLE; |
| } |
| |
| /* Prevent firmware from sending up tx inspection requests. There's |
| * nothing ath10k can do with frames requested for inspection so force |
| * it to simply rely a regular tx completion with discard status. |
| */ |
| flags1 |= HTT_DATA_TX_DESC_FLAGS1_POSTPONED; |
| |
| txbuf->cmd_hdr.msg_type = HTT_H2T_MSG_TYPE_TX_FRM; |
| txbuf->cmd_tx.flags0 = flags0; |
| txbuf->cmd_tx.flags1 = __cpu_to_le16(flags1); |
| txbuf->cmd_tx.len = __cpu_to_le16(msdu->len); |
| txbuf->cmd_tx.id = __cpu_to_le16(msdu_id); |
| txbuf->cmd_tx.frags_paddr = __cpu_to_le32(frags_paddr); |
| if (ath10k_mac_tx_frm_has_freq(ar)) { |
| txbuf->cmd_tx.offchan_tx.peerid = |
| __cpu_to_le16(HTT_INVALID_PEERID); |
| txbuf->cmd_tx.offchan_tx.freq = |
| __cpu_to_le16(freq); |
| } else { |
| txbuf->cmd_tx.peerid = |
| __cpu_to_le32(HTT_INVALID_PEERID); |
| } |
| |
| trace_ath10k_htt_tx(ar, msdu_id, msdu->len, vdev_id, tid); |
| ath10k_dbg(ar, ATH10K_DBG_HTT, |
| "htt tx flags0 %hhu flags1 %hu len %d id %hu frags_paddr %08x, msdu_paddr %08x vdev %hhu tid %hhu freq %hu\n", |
| flags0, flags1, msdu->len, msdu_id, frags_paddr, |
| (u32)skb_cb->paddr, vdev_id, tid, freq); |
| ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt tx msdu: ", |
| msdu->data, msdu->len); |
| trace_ath10k_tx_hdr(ar, msdu->data, msdu->len); |
| trace_ath10k_tx_payload(ar, msdu->data, msdu->len); |
| |
| sg_items[0].transfer_id = 0; |
| sg_items[0].transfer_context = NULL; |
| sg_items[0].vaddr = &txbuf->htc_hdr; |
| sg_items[0].paddr = txbuf_paddr + |
| sizeof(txbuf->frags); |
| sg_items[0].len = sizeof(txbuf->htc_hdr) + |
| sizeof(txbuf->cmd_hdr) + |
| sizeof(txbuf->cmd_tx); |
| |
| sg_items[1].transfer_id = 0; |
| sg_items[1].transfer_context = NULL; |
| sg_items[1].vaddr = msdu->data; |
| sg_items[1].paddr = skb_cb->paddr; |
| sg_items[1].len = prefetch_len; |
| |
| res = ath10k_hif_tx_sg(htt->ar, |
| htt->ar->htc.endpoint[htt->eid].ul_pipe_id, |
| sg_items, ARRAY_SIZE(sg_items)); |
| if (res) |
| goto err_unmap_msdu; |
| |
| return 0; |
| |
| err_unmap_msdu: |
| dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); |
| err_free_msdu_id: |
| spin_lock_bh(&htt->tx_lock); |
| ath10k_htt_tx_free_msdu_id(htt, msdu_id); |
| spin_unlock_bh(&htt->tx_lock); |
| err_tx_dec: |
| ath10k_htt_tx_dec_pending(htt, limit_mgmt_desc); |
| err: |
| return res; |
| } |