tx.c revision a1c597f2b22cdc228de3c58784b00e80b9b53e03
1f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho/* 2f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * This file is part of wl1271 3f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 4f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * Copyright (C) 2009 Nokia Corporation 5f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 6f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * Contact: Luciano Coelho <luciano.coelho@nokia.com> 7f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 8f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * This program is free software; you can redistribute it and/or 9f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * modify it under the terms of the GNU General Public License 10f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * version 2 as published by the Free Software Foundation. 11f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 12f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * This program is distributed in the hope that it will be useful, but 13f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * WITHOUT ANY WARRANTY; without even the implied warranty of 14f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * General Public License for more details. 16f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 17f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * You should have received a copy of the GNU General Public License 18f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * along with this program; if not, write to the Free Software 19f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 02110-1301 USA 21f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 22f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho */ 23f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 24f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho#include <linux/kernel.h> 25f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho#include <linux/module.h> 26c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov#include <linux/etherdevice.h> 27f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 28c31be25a7144ebc9b7a22128909bac7654d4c46bLuciano Coelho#include "wlcore.h" 290f4e31222a2c0b93f25a87effd2033cb78c7a79cLuciano Coelho#include "debug.h" 3000d201001bd4e8a46e3d03c970abcb72256c368bShahar Levi#include "io.h" 3100d201001bd4e8a46e3d03c970abcb72256c368bShahar Levi#include "ps.h" 3200d201001bd4e8a46e3d03c970abcb72256c368bShahar Levi#include "tx.h" 3356d4f8f685c073c7ed7203b78c57f5d893d65102Arik Nemtsov#include "event.h" 34b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsov#include "hw_ops.h" 35f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 3600782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho/* 3700782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho * TODO: this is here just for now, it must be removed when the data 3800782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho * operations are in place. 3900782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho */ 4000782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho#include "../wl12xx/reg.h" 4100782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho 42536129c8ad35de87ff2f864f205a54ac32bfebccEliad Pellerstatic int wl1271_set_default_wep_key(struct wl1271 *wl, 43536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct wl12xx_vif *wlvif, u8 id) 447f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov{ 457f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov int ret; 46536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS); 477f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 487f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov if (is_ap) 49c690ec816f9fa2ab2b6200c5b79b6933acca49a4Eliad Peller ret = wl12xx_cmd_set_default_wep_key(wl, id, 50a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller wlvif->ap.bcast_hlid); 517f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov else 52154da67c7da14ffd8da292394f8cbc81cc5ea4e3Eliad Peller ret = wl12xx_cmd_set_default_wep_key(wl, id, wlvif->sta.hlid); 537f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 547f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov if (ret < 0) 557f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov return ret; 567f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 577f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov wl1271_debug(DEBUG_CRYPT, "default wep key idx: %d", (int)id); 587f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov return 0; 597f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov} 607f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 6125eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yarivstatic int wl1271_alloc_tx_id(struct wl1271 *wl, struct sk_buff *skb) 62f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 6325eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv int id; 6425eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv 6572b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov id = find_first_zero_bit(wl->tx_frames_map, wl->num_tx_desc); 6672b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov if (id >= wl->num_tx_desc) 6725eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv return -EBUSY; 6825eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv 6925eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv __set_bit(id, wl->tx_frames_map); 7025eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl->tx_frames[id] = skb; 7125eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl->tx_frames_cnt++; 7225eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv return id; 7325eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv} 74f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 75872b345fbaef290f890d0bbd34b78ab50269980fArik Nemtsovvoid wl1271_free_tx_id(struct wl1271 *wl, int id) 7625eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv{ 7725eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv if (__test_and_clear_bit(id, wl->tx_frames_map)) { 7872b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov if (unlikely(wl->tx_frames_cnt == wl->num_tx_desc)) 79ef2e3004855e90d2919105e4a91d7df6ab9845a9Ido Yariv clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags); 80ef2e3004855e90d2919105e4a91d7df6ab9845a9Ido Yariv 8125eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl->tx_frames[id] = NULL; 8225eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl->tx_frames_cnt--; 8325eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv } 84f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 85872b345fbaef290f890d0bbd34b78ab50269980fArik NemtsovEXPORT_SYMBOL(wl1271_free_tx_id); 86f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 8799a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsovstatic void wl1271_tx_ap_update_inconnection_sta(struct wl1271 *wl, 8899a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov struct sk_buff *skb) 8999a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov{ 9099a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov struct ieee80211_hdr *hdr; 9199a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov 9299a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov /* 9399a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov * add the station to the known list before transmitting the 9499a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov * authentication response. this way it won't get de-authed by FW 9599a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov * when transmitting too soon. 9699a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov */ 9799a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov hdr = (struct ieee80211_hdr *)(skb->data + 9899a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov sizeof(struct wl1271_tx_hw_descr)); 9999a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov if (ieee80211_is_auth(hdr->frame_control)) 10099a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov wl1271_acx_set_inconnection_sta(wl, hdr->addr1); 10199a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov} 10299a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov 103c7ffb902cca655e4d6bdda4156407008573bb214Eliad Pellerstatic void wl1271_tx_regulate_link(struct wl1271 *wl, 104c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller struct wl12xx_vif *wlvif, 105c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller u8 hlid) 106b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov{ 107da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov bool fw_ps, single_sta; 1089b17f1b371c5aa5179b3e5392bc22132a3371da4Arik Nemtsov u8 tx_pkts; 109b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov 110c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller if (WARN_ON(!test_bit(hlid, wlvif->links_map))) 111b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov return; 112b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov 113b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map); 1149b17f1b371c5aa5179b3e5392bc22132a3371da4Arik Nemtsov tx_pkts = wl->links[hlid].allocated_pkts; 115da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov single_sta = (wl->active_sta_count == 1); 116b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov 117b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov /* 118b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov * if in FW PS and there is enough data in FW we can put the link 119b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov * into high-level PS and clean out its TX queues. 120da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov * Make an exception if this is the only connected station. In this 121da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov * case FW-memory congestion is not a problem. 122b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov */ 123da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov if (!single_sta && fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS) 1246e8cd3310491b10db20d0f7eaf5713b05fa7b753Eliad Peller wl12xx_ps_link_start(wl, wlvif, hlid, true); 125b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov} 126b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov 127f8e0af6b8732b47c2531a280753d29a4ca2d114bArik Nemtsovbool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb) 128f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller{ 129f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller return wl->dummy_packet == skb; 130f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller} 131872b345fbaef290f890d0bbd34b78ab50269980fArik NemtsovEXPORT_SYMBOL(wl12xx_is_dummy_packet); 132f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 133a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Pelleru8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif, 134a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller struct sk_buff *skb) 135a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov{ 136a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct ieee80211_tx_info *control = IEEE80211_SKB_CB(skb); 137a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 138a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov if (control->control.sta) { 139a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct wl1271_station *wl_sta; 140a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 141a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl_sta = (struct wl1271_station *) 142a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov control->control.sta->drv_priv; 143a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov return wl_sta->hlid; 144a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } else { 145a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct ieee80211_hdr *hdr; 146a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 14753d40d0b863e22b697f8d85e1f95cb6f9d2d95b1Eliad Peller if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) 148f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller return wl->system_hlid; 149f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 150a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov hdr = (struct ieee80211_hdr *)skb->data; 15145b60f7ddd05e38a6835fb93e8dbcc6ef9bf12faEliad Peller if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) 152a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller return wlvif->ap.bcast_hlid; 15345b60f7ddd05e38a6835fb93e8dbcc6ef9bf12faEliad Peller else 15445b60f7ddd05e38a6835fb93e8dbcc6ef9bf12faEliad Peller return wlvif->ap.global_hlid; 155a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 156a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov} 157a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 158d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pelleru8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif, 159d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct sk_buff *skb) 160f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller{ 161df4c849f4608e8962f019fea6021ebd602a11641Eliad Peller struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 162df4c849f4608e8962f019fea6021ebd602a11641Eliad Peller 1630f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (!wlvif || wl12xx_is_dummy_packet(wl, skb)) 164f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller return wl->system_hlid; 165f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 166536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller if (wlvif->bss_type == BSS_TYPE_AP_BSS) 167a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller return wl12xx_tx_get_hlid_ap(wl, wlvif, skb); 168f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 169ba8447f64159927baf673d827e404605471d8f68Eliad Peller if ((test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) || 170eee514e3d6cecc7abdf1b27734169004fefb0941Eliad Peller test_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags)) && 171df4c849f4608e8962f019fea6021ebd602a11641Eliad Peller !ieee80211_is_auth(hdr->frame_control) && 172df4c849f4608e8962f019fea6021ebd602a11641Eliad Peller !ieee80211_is_assoc_req(hdr->frame_control)) 173154da67c7da14ffd8da292394f8cbc81cc5ea4e3Eliad Peller return wlvif->sta.hlid; 174f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller else 175afaf8bdb2b08bbf493b03757243821df72b26c53Eliad Peller return wlvif->dev_hlid; 176f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller} 177f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 178b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsovunsigned int wlcore_calc_packet_alignment(struct wl1271 *wl, 179b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsov unsigned int packet_length) 1800da13da767cd568c1fe2a7b5b936e86e521b5ae7Ido Yariv{ 181f83985bb5f8f0f25d44ab7b108a709a52aa1c5e0Arik Nemtsov if (wl->quirks & WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN) 182ce39defb5c6312a89a0c7be48797d6fb8fe9abadLuciano Coelho return ALIGN(packet_length, WL12XX_BUS_BLOCK_SIZE); 183f83985bb5f8f0f25d44ab7b108a709a52aa1c5e0Arik Nemtsov else 184f83985bb5f8f0f25d44ab7b108a709a52aa1c5e0Arik Nemtsov return ALIGN(packet_length, WL1271_TX_ALIGN_TO); 1850da13da767cd568c1fe2a7b5b936e86e521b5ae7Ido Yariv} 186b3b4b4b812018a06221b6d7b88a5540fccae2940Arik NemtsovEXPORT_SYMBOL(wlcore_calc_packet_alignment); 1870da13da767cd568c1fe2a7b5b936e86e521b5ae7Ido Yariv 188a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellerstatic int wl1271_tx_allocate(struct wl1271 *wl, struct wl12xx_vif *wlvif, 189536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct sk_buff *skb, u32 extra, u32 buf_offset, 19032bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov u8 hlid, bool is_gem) 191f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 192f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_tx_hw_descr *desc; 193f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho u32 total_len = skb->len + sizeof(struct wl1271_tx_hw_descr) + extra; 1945c9417f1656b0f415f4be5a7cd7195ecadd7dd1aJuuso Oikarinen u32 total_blocks; 195742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov int id, ret = -EBUSY, ac; 19632bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov u32 spare_blocks; 197f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 198a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv if (buf_offset + total_len > WL1271_AGGR_BUFFER_SIZE) 1996c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv return -EAGAIN; 200a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv 20132bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov spare_blocks = wlcore_hw_get_spare_blocks(wl, is_gem); 20232bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov 203f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* allocate free identifier for the packet */ 20425eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv id = wl1271_alloc_tx_id(wl, skb); 205f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (id < 0) 206f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return id; 207f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 208b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsov total_blocks = wlcore_hw_calc_tx_blocks(wl, total_len, spare_blocks); 20948a61477bdc04896bd96d259388a0c42a7019943Shahar Levi 210f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (total_blocks <= wl->tx_blocks_available) { 211f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho desc = (struct wl1271_tx_hw_descr *)skb_push( 212f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho skb, total_len - skb->len); 213f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 2144a3b97eea216135cd37e6d3a4a6c551c201a6615Arik Nemtsov wlcore_hw_set_tx_desc_blocks(wl, desc, total_blocks, 2154a3b97eea216135cd37e6d3a4a6c551c201a6615Arik Nemtsov spare_blocks); 216ae77eccf04f8c36769bdba334e1bbcc7bb9d3644Shahar Levi 217f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho desc->id = id; 218f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 219f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl->tx_blocks_available -= total_blocks; 2207bb5d6ce9e6ebb3bb71915cb0224523d3c284b4fArik Nemtsov wl->tx_allocated_blocks += total_blocks; 221f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 22255df5afb13718cda49128fa5985556df91d07765Arik Nemtsov /* If the FW was empty before, arm the Tx watchdog */ 22355df5afb13718cda49128fa5985556df91d07765Arik Nemtsov if (wl->tx_allocated_blocks == total_blocks) 22455df5afb13718cda49128fa5985556df91d07765Arik Nemtsov wl12xx_rearm_tx_watchdog_locked(wl); 22555df5afb13718cda49128fa5985556df91d07765Arik Nemtsov 226742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 227742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov wl->tx_allocated_pkts[ac]++; 228bf54e301671a6ece6c94550294dc7faf14158cd3Arik Nemtsov 22932bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov if (!wl12xx_is_dummy_packet(wl, skb) && wlvif && 2300f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller wlvif->bss_type == BSS_TYPE_AP_BSS && 231c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller test_bit(hlid, wlvif->ap.sta_hlid_map)) 2329b17f1b371c5aa5179b3e5392bc22132a3371da4Arik Nemtsov wl->links[hlid].allocated_pkts++; 23309039f42a24084c10e7761ab28ef22932c62a46fArik Nemtsov 234f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho ret = 0; 235f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 236f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_debug(DEBUG_TX, 237f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho "tx_allocate: size: %d, blocks: %d, id: %d", 238f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho total_len, total_blocks, id); 239781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen } else { 24025eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl1271_free_tx_id(wl, id); 241781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen } 242f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 243f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return ret; 244f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 245f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 246a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellerstatic void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif, 247536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct sk_buff *skb, u32 extra, 248536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct ieee80211_tx_info *control, u8 hlid) 249f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 250ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen struct timespec ts; 251f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_tx_hw_descr *desc; 2526f266e912c0733e77f63e9ad245db3c966b75942Arik Nemtsov int ac, rate_idx; 253ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen s64 hosttime; 254cf00f379d82d170712150588accd2ebe316c2226John W. Linville u16 tx_attr = 0; 255f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller __le16 frame_control; 256f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller struct ieee80211_hdr *hdr; 257f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller u8 *frame_start; 258a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller bool is_dummy; 259f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 260f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho desc = (struct wl1271_tx_hw_descr *) skb->data; 261f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller frame_start = (u8 *)(desc + 1); 262f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller hdr = (struct ieee80211_hdr *)(frame_start + extra); 263f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller frame_control = hdr->frame_control; 264f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 2651e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen /* relocate space for security header */ 2661e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen if (extra) { 267f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller int hdrlen = ieee80211_hdrlen(frame_control); 268f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller memmove(frame_start, hdr, hdrlen); 2692fc28de5989e1c40fee4e92e2a8f3bdd47b1b34aArik Nemtsov skb_set_network_header(skb, skb_network_offset(skb) + extra); 2701e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen } 2711e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen 272f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* configure packet life time */ 273ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen getnstimeofday(&ts); 274ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen hosttime = (timespec_to_ns(&ts) >> 10); 275ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen desc->start_time = cpu_to_le32(hosttime - wl->time_offset); 276c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov 277a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller is_dummy = wl12xx_is_dummy_packet(wl, skb); 2780f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (is_dummy || !wlvif || wlvif->bss_type != BSS_TYPE_AP_BSS) 279c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov desc->life_time = cpu_to_le16(TX_HW_MGMT_PKT_LIFETIME_TU); 280c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov else 281c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov desc->life_time = cpu_to_le16(TX_HW_AP_MODE_PKT_LIFETIME_TU); 282f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 283db674d249c1fa20fd6731048f41646b3a2e8bdf5Eliad Peller /* queue */ 284c6999d831ab9ae5e368b20f3bc11b0ca9c17a7ecKalle Valo ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 285db674d249c1fa20fd6731048f41646b3a2e8bdf5Eliad Peller desc->tid = skb->priority; 286c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov 287a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller if (is_dummy) { 288ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi /* 289ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi * FW expects the dummy packet to have an invalid session id - 290ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi * any session id that is different than the one set in the join 291ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi */ 29298b8625301e55bd3e4340f704edc378e4707e577Eliad Peller tx_attr = (SESSION_COUNTER_INVALID << 293ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi TX_HW_ATTR_OFST_SESSION_COUNTER) & 294ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi TX_HW_ATTR_SESSION_COUNTER; 295ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi 296ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi tx_attr |= TX_HW_ATTR_TX_DUMMY_REQ; 2970f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller } else if (wlvif) { 298ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi /* configure the tx attributes */ 29998b8625301e55bd3e4340f704edc378e4707e577Eliad Peller tx_attr = wlvif->session_counter << 30098b8625301e55bd3e4340f704edc378e4707e577Eliad Peller TX_HW_ATTR_OFST_SESSION_COUNTER; 301ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi } 302ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi 30379b122dc51797b650201f21360481a0450e9b7e4Eliad Peller desc->hlid = hlid; 3040f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (is_dummy || !wlvif) 305a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller rate_idx = 0; 306a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller else if (wlvif->bss_type != BSS_TYPE_AP_BSS) { 307c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov /* if the packets are destined for AP (have a STA entry) 308c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov send them with AP rate policies, otherwise use default 309c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov basic rates */ 3108a0f2ee37810aa4a4f46baf08b2ad587e138eb58Eliad Peller if (control->flags & IEEE80211_TX_CTL_NO_CCK_RATE) 3118a0f2ee37810aa4a4f46baf08b2ad587e138eb58Eliad Peller rate_idx = wlvif->sta.p2p_rate_idx; 3128a0f2ee37810aa4a4f46baf08b2ad587e138eb58Eliad Peller else if (control->control.sta) 313e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->sta.ap_rate_idx; 314c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov else 315e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->sta.basic_rate_idx; 316c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov } else { 317a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller if (hlid == wlvif->ap.global_hlid) 318e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->ap.mgmt_rate_idx; 319a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller else if (hlid == wlvif->ap.bcast_hlid) 320e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->ap.bcast_rate_idx; 321e51ae9be2e313b63a43f1f93578d9a71d38a77eaArik Nemtsov else 322e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->ap.ucast_rate_idx[ac]; 323c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov } 324c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov 325c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov tx_attr |= rate_idx << TX_HW_ATTR_OFST_RATE_POLICY; 326d0f63b202146f3281800ee44823740c8bbf38f11Luciano Coelho 327f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller /* for WEP shared auth - no fw encryption is needed */ 328f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller if (ieee80211_is_auth(frame_control) && 329f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller ieee80211_has_protected(frame_control)) 330f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller tx_attr |= TX_HW_ATTR_HOST_ENCRYPT; 331f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller 332d0f63b202146f3281800ee44823740c8bbf38f11Luciano Coelho desc->tx_attr = cpu_to_le16(tx_attr); 3336f266e912c0733e77f63e9ad245db3c966b75942Arik Nemtsov 3342fc28de5989e1c40fee4e92e2a8f3bdd47b1b34aArik Nemtsov wlcore_hw_set_tx_desc_csum(wl, desc, skb); 3356f266e912c0733e77f63e9ad245db3c966b75942Arik Nemtsov wlcore_hw_set_tx_desc_data_len(wl, desc, skb); 336f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 337f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 338f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho/* caller must hold wl->mutex */ 339a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellerstatic int wl1271_prepare_tx_frame(struct wl1271 *wl, struct wl12xx_vif *wlvif, 340a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller struct sk_buff *skb, u32 buf_offset) 341f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 342f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct ieee80211_tx_info *info; 343f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho u32 extra = 0; 344f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho int ret = 0; 345a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv u32 total_len; 34609039f42a24084c10e7761ab28ef22932c62a46fArik Nemtsov u8 hlid; 347536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller bool is_dummy; 34832bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov bool is_gem = false; 349f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 350f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (!skb) 351f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return -EINVAL; 352f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 353f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho info = IEEE80211_SKB_CB(skb); 354f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 355536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller /* TODO: handle dummy packets on multi-vifs */ 356536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller is_dummy = wl12xx_is_dummy_packet(wl, skb); 357536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller 3582c0133a437905591cdaa39cf65a3f7188d20a094Arik Nemtsov if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) && 3592c0133a437905591cdaa39cf65a3f7188d20a094Arik Nemtsov info->control.hw_key && 36097359d1235eaf634fe706c9faa6e40181cc95fb8Johannes Berg info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) 3615ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller extra = WL1271_EXTRA_SPACE_TKIP; 362f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 363f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (info->control.hw_key) { 3647f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov bool is_wep; 3657f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov u8 idx = info->control.hw_key->hw_key_idx; 3667f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov u32 cipher = info->control.hw_key->cipher; 3677f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 3687f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov is_wep = (cipher == WLAN_CIPHER_SUITE_WEP40) || 3697f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov (cipher == WLAN_CIPHER_SUITE_WEP104); 370f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 371f75c753f3c77b758fa5ace90c15b2ea3b7a3d46dEliad Peller if (unlikely(is_wep && wlvif->default_key != idx)) { 372536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller ret = wl1271_set_default_wep_key(wl, wlvif, idx); 373f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (ret < 0) 374f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return ret; 375f75c753f3c77b758fa5ace90c15b2ea3b7a3d46dEliad Peller wlvif->default_key = idx; 376f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 37732bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov 37832bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov is_gem = (cipher == WL1271_CIPHER_SUITE_GEM); 379f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 380d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller hlid = wl12xx_tx_get_hlid(wl, wlvif, skb); 38179b122dc51797b650201f21360481a0450e9b7e4Eliad Peller if (hlid == WL12XX_INVALID_LINK_ID) { 382e0d62536d032db689adf9c8162a9d2caf4714f44Eliad Peller wl1271_error("invalid hlid. dropping skb 0x%p", skb); 38379b122dc51797b650201f21360481a0450e9b7e4Eliad Peller return -EINVAL; 38479b122dc51797b650201f21360481a0450e9b7e4Eliad Peller } 38509039f42a24084c10e7761ab28ef22932c62a46fArik Nemtsov 38632bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov ret = wl1271_tx_allocate(wl, wlvif, skb, extra, buf_offset, hlid, 38732bb2c03f990d015c0fec67e9134ea8625aaf784Arik Nemtsov is_gem); 388f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (ret < 0) 389f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return ret; 390f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 391a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller wl1271_tx_fill_hdr(wl, wlvif, skb, extra, info, hlid); 392fae2fd767e9d380ed0d05e4a5d6b1673e2c2d3dfArik Nemtsov 3930f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (!is_dummy && wlvif && wlvif->bss_type == BSS_TYPE_AP_BSS) { 39499a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov wl1271_tx_ap_update_inconnection_sta(wl, skb); 395c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller wl1271_tx_regulate_link(wl, wlvif, hlid); 396b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov } 39799a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov 398a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv /* 39948a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * The length of each packet is stored in terms of 40048a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * words. Thus, we must pad the skb data to make sure its 40148a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * length is aligned. The number of padding bytes is computed 40248a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * and set in wl1271_tx_fill_hdr. 40348a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * In special cases, we want to align to a specific block size 40448a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * (eg. for wl128x with SDIO we align to 256). 405a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv */ 406b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsov total_len = wlcore_calc_packet_alignment(wl, skb->len); 40748a61477bdc04896bd96d259388a0c42a7019943Shahar Levi 408a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv memcpy(wl->aggr_buf + buf_offset, skb->data, skb->len); 409a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv memset(wl->aggr_buf + buf_offset + skb->len, 0, total_len - skb->len); 410f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 411990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv /* Revert side effects in the dummy packet skb, so it can be reused */ 412536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller if (is_dummy) 413990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 414990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv 415a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv return total_len; 416f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 417f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 418af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Pelleru32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set, 419af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller enum ieee80211_band rate_band) 420830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen{ 421830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen struct ieee80211_supported_band *band; 422830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen u32 enabled_rates = 0; 423830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen int bit; 424830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen 425af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller band = wl->hw->wiphy->bands[rate_band]; 426830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen for (bit = 0; bit < band->n_bitrates; bit++) { 427830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen if (rate_set & 0x1) 428830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen enabled_rates |= band->bitrates[bit].hw_value; 429830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen rate_set >>= 1; 430830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen } 431830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen 432b3a47ee0ec07b16f68c38052e8cd1b5cb417bdcaArik Nemtsov /* MCS rates indication are on bits 16 - 31 */ 43318357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi rate_set >>= HW_HT_RATES_OFFSET - band->n_bitrates; 43418357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi 435b3a47ee0ec07b16f68c38052e8cd1b5cb417bdcaArik Nemtsov for (bit = 0; bit < 16; bit++) { 43618357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi if (rate_set & 0x1) 43718357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi enabled_rates |= (CONF_HW_BIT_RATE_MCS_0 << bit); 43818357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi rate_set >>= 1; 43918357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi } 44018357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi 441830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen return enabled_rates; 442830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen} 443830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen 444a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsovvoid wl1271_handle_tx_low_watermark(struct wl1271 *wl) 4452fe33e8cff354a3f320549544bffebbbab680145Ido Yariv{ 446708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov int i; 4472fe33e8cff354a3f320549544bffebbbab680145Ido Yariv 448708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) { 4496639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov if (wlcore_is_queue_stopped_by_reason(wl, i, 4506639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov WLCORE_QUEUE_STOP_REASON_WATERMARK) && 451f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[i] <= WL1271_TX_QUEUE_LOW_WATERMARK) { 452708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov /* firmware buffer has space, restart queues */ 4536639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov wlcore_wake_queue(wl, i, 4546639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov WLCORE_QUEUE_STOP_REASON_WATERMARK); 455708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov } 4562fe33e8cff354a3f320549544bffebbbab680145Ido Yariv } 4572fe33e8cff354a3f320549544bffebbbab680145Ido Yariv} 4582fe33e8cff354a3f320549544bffebbbab680145Ido Yariv 459742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsovstatic struct sk_buff_head *wl1271_select_queue(struct wl1271 *wl, 460742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov struct sk_buff_head *queues) 461742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov{ 462742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov int i, q = -1, ac; 463742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov u32 min_pkts = 0xffffffff; 464742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 465742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov /* 466742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * Find a non-empty ac where: 467742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * 1. There are packets to transmit 468742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * 2. The FW has the least allocated blocks 469742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * 470742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * We prioritize the ACs according to VO>VI>BE>BK 471742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov */ 472742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) { 473742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov ac = wl1271_tx_get_queue(i); 474742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov if (!skb_queue_empty(&queues[ac]) && 475742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov (wl->tx_allocated_pkts[ac] < min_pkts)) { 476742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov q = ac; 477742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov min_pkts = wl->tx_allocated_pkts[q]; 478742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov } 479742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov } 480742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 481742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov if (q == -1) 482742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov return NULL; 483742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 484742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov return &queues[q]; 485742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov} 486742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 487d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellerstatic struct sk_buff *wl12xx_lnk_skb_dequeue(struct wl1271 *wl, 488d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct wl1271_link *lnk) 4896742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen{ 490d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct sk_buff *skb; 4916742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen unsigned long flags; 492742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov struct sk_buff_head *queue; 4936742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 494d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller queue = wl1271_select_queue(wl, lnk->tx_queue); 495742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov if (!queue) 496d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller return NULL; 497742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 498742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov skb = skb_dequeue(queue); 4996742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen if (skb) { 500f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov int q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 5016742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen spin_lock_irqsave(&wl->wl_lock, flags); 5026246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov WARN_ON_ONCE(wl->tx_queue_count[q] <= 0); 503f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[q]--; 5046742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen spin_unlock_irqrestore(&wl->wl_lock, flags); 5056742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen } 5066742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 5076742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen return skb; 5086742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen} 5096742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 510d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellerstatic struct sk_buff *wl12xx_vif_skb_dequeue(struct wl1271 *wl, 511d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct wl12xx_vif *wlvif) 512a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov{ 513a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct sk_buff *skb = NULL; 514a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov int i, h, start_hlid; 515a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 516a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov /* start from the link after the last one */ 5174438aca9e16901d8d32a025ca27ad8284a117e09Eliad Peller start_hlid = (wlvif->last_tx_hlid + 1) % WL12XX_MAX_LINKS; 518a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 519a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov /* dequeue according to AC, round robin on each link */ 520c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller for (i = 0; i < WL12XX_MAX_LINKS; i++) { 521c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller h = (start_hlid + i) % WL12XX_MAX_LINKS; 522a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 523742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov /* only consider connected stations */ 524c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller if (!test_bit(h, wlvif->links_map)) 525742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov continue; 526742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 527d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller skb = wl12xx_lnk_skb_dequeue(wl, &wl->links[h]); 528d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller if (!skb) 529742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov continue; 530742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 531d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wlvif->last_tx_hlid = h; 532d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller break; 533a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 534a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 535d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller if (!skb) 5364438aca9e16901d8d32a025ca27ad8284a117e09Eliad Peller wlvif->last_tx_hlid = 0; 537a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 538a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov return skb; 539a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov} 540a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 541a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellerstatic struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl) 542a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov{ 543990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv unsigned long flags; 544e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller struct wl12xx_vif *wlvif = wl->last_wlvif; 545990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv struct sk_buff *skb = NULL; 546990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv 54749c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov /* continue from last wlvif (round robin) */ 548e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller if (wlvif) { 549e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller wl12xx_for_each_wlvif_continue(wl, wlvif) { 550e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller skb = wl12xx_vif_skb_dequeue(wl, wlvif); 551e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller if (skb) { 552e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller wl->last_wlvif = wlvif; 553e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller break; 554e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 555e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 556e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 557e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller 55849c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov /* dequeue from the system HLID before the restarting wlvif list */ 55949c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov if (!skb) 56049c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov skb = wl12xx_lnk_skb_dequeue(wl, &wl->links[wl->system_hlid]); 56149c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov 56249c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov /* do a new pass over the wlvif list */ 563e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller if (!skb) { 564e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller wl12xx_for_each_wlvif(wl, wlvif) { 565e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller skb = wl12xx_vif_skb_dequeue(wl, wlvif); 566e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller if (skb) { 567e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller wl->last_wlvif = wlvif; 568e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller break; 569e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 57049c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov 57149c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov /* 57249c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov * No need to continue after last_wlvif. The previous 57349c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov * pass should have found it. 57449c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov */ 57549c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov if (wlvif == wl->last_wlvif) 57649c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov break; 577e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 578a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller } 579a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller 580990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv if (!skb && 581990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv test_and_clear_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags)) { 582f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov int q; 583f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov 584990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv skb = wl->dummy_packet; 585f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 586990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv spin_lock_irqsave(&wl->wl_lock, flags); 5876246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov WARN_ON_ONCE(wl->tx_queue_count[q] <= 0); 588f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[q]--; 589990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv spin_unlock_irqrestore(&wl->wl_lock, flags); 590990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv } 591990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv 592990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv return skb; 593a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov} 594a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 595d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellerstatic void wl1271_skb_queue_head(struct wl1271 *wl, struct wl12xx_vif *wlvif, 596536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct sk_buff *skb) 5976742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen{ 5986742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen unsigned long flags; 5996742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen int q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 6006742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 601990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv if (wl12xx_is_dummy_packet(wl, skb)) { 602990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags); 603d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller } else { 604d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller u8 hlid = wl12xx_tx_get_hlid(wl, wlvif, skb); 605a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov skb_queue_head(&wl->links[hlid].tx_queue[q], skb); 606a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 607a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov /* make sure we dequeue the same packet next time */ 6084438aca9e16901d8d32a025ca27ad8284a117e09Eliad Peller wlvif->last_tx_hlid = (hlid + WL12XX_MAX_LINKS - 1) % 609d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller WL12XX_MAX_LINKS; 610a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 611a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 6126742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen spin_lock_irqsave(&wl->wl_lock, flags); 613f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[q]++; 6146742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen spin_unlock_irqrestore(&wl->wl_lock, flags); 6156742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen} 6166742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 61777ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Pellerstatic bool wl1271_tx_is_data_present(struct sk_buff *skb) 61877ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller{ 61977ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); 62077ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller 62177ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller return ieee80211_is_data_present(hdr->frame_control); 62277ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller} 62377ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller 6249eb599e9c62dcfd4efece1936c385381b366b684Eliad Pellervoid wl12xx_rearm_rx_streaming(struct wl1271 *wl, unsigned long *active_hlids) 6259eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller{ 6269eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller struct wl12xx_vif *wlvif; 6279eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller u32 timeout; 6289eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller u8 hlid; 6299eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6309eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (!wl->conf.rx_streaming.interval) 6319eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller return; 6329eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6339eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (!wl->conf.rx_streaming.always && 6349eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller !test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)) 6359eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller return; 6369eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6379eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller timeout = wl->conf.rx_streaming.duration; 6389eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller wl12xx_for_each_wlvif_sta(wl, wlvif) { 6399eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller bool found = false; 6409eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller for_each_set_bit(hlid, active_hlids, WL12XX_MAX_LINKS) { 6419eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (test_bit(hlid, wlvif->links_map)) { 6429eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller found = true; 6439eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller break; 6449eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller } 6459eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller } 6469eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6479eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (!found) 6489eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller continue; 6499eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6509eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller /* enable rx streaming */ 6510744bdb60b51dce54553d5af9a6133f1fe419032Eliad Peller if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags)) 6529eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller ieee80211_queue_work(wl->hw, 6539eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller &wlvif->rx_streaming_enable_work); 6549eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6559eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller mod_timer(&wlvif->rx_streaming_timer, 6569eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller jiffies + msecs_to_jiffies(timeout)); 6579eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller } 6589eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller} 6599eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 660a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellervoid wl1271_tx_work_locked(struct wl1271 *wl) 661f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 662a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller struct wl12xx_vif *wlvif; 663f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct sk_buff *skb; 6649eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller struct wl1271_tx_hw_descr *desc; 6656c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv u32 buf_offset = 0; 6666c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv bool sent_packets = false; 6679eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller unsigned long active_hlids[BITS_TO_LONGS(WL12XX_MAX_LINKS)] = {0}; 668f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho int ret; 669f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 670f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (unlikely(wl->state == WL1271_STATE_OFF)) 671c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller return; 672f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 673a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller while ((skb = wl1271_skb_dequeue(wl))) { 6740f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 6759eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller bool has_data = false; 6769eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 677a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller wlvif = NULL; 6780f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (!wl12xx_is_dummy_packet(wl, skb) && info->control.vif) 6790f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller wlvif = wl12xx_vif_to_data(info->control.vif); 680a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller 6819eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller has_data = wlvif && wl1271_tx_is_data_present(skb); 682a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller ret = wl1271_prepare_tx_frame(wl, wlvif, skb, buf_offset); 6836c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv if (ret == -EAGAIN) { 684a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv /* 6856c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv * Aggregation buffer is full. 6866c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv * Flush buffer and try again. 6876c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv */ 688d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wl1271_skb_queue_head(wl, wlvif, skb); 68900782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho wlcore_write_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf, 69000782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho buf_offset, true); 6916c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv sent_packets = true; 6926c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv buf_offset = 0; 6936c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv continue; 6946c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv } else if (ret == -EBUSY) { 6956c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv /* 6966c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv * Firmware buffer is full. 697a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv * Queue back last skb, and stop aggregating. 698a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv */ 699d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wl1271_skb_queue_head(wl, wlvif, skb); 700a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv /* No work left, avoid scheduling redundant tx work */ 701a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv set_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags); 702ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen goto out_ack; 703f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } else if (ret < 0) { 7045de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller if (wl12xx_is_dummy_packet(wl, skb)) 7055de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller /* 7065de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller * fw still expects dummy packet, 7075de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller * so re-enqueue it 7085de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller */ 7095de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller wl1271_skb_queue_head(wl, wlvif, skb); 7105de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller else 7115de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller ieee80211_free_txskb(wl->hw, skb); 712ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen goto out_ack; 713f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 714a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv buf_offset += ret; 715a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv wl->tx_packets_count++; 7169eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (has_data) { 7179eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller desc = (struct wl1271_tx_hw_descr *) skb->data; 7189eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller __set_bit(desc->hlid, active_hlids); 7199eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller } 720f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 721f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 722ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinenout_ack: 723a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv if (buf_offset) { 72400782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho wlcore_write_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf, 72500782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho buf_offset, true); 7266c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv sent_packets = true; 7276c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv } 7286c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv if (sent_packets) { 729606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv /* 730606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv * Interrupt the firmware with the new packets. This is only 731606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv * required for older hardware revisions 732606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv */ 7336f7dd16cb125468a5393861c22fbecfb52dd9653Luciano Coelho if (wl->quirks & WLCORE_QUIRK_END_OF_TRANSACTION) 73400782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho wl1271_write32(wl, WL12XX_HOST_WR_ACCESS, 735606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv wl->tx_packets_count); 736606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv 737a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl1271_handle_tx_low_watermark(wl); 738a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv } 7399eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller wl12xx_rearm_rx_streaming(wl, active_hlids); 740a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv} 741f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 742a522550a283de31c7cfc30c7a129ce584e38c582Ido Yarivvoid wl1271_tx_work(struct work_struct *work) 743a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv{ 744a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv struct wl1271 *wl = container_of(work, struct wl1271, tx_work); 745c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller int ret; 746a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv 747a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv mutex_lock(&wl->mutex); 748c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller ret = wl1271_ps_elp_wakeup(wl); 749c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller if (ret < 0) 750c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller goto out; 751c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller 752a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller wl1271_tx_work_locked(wl); 753c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller 754c75bbcdb200e2815c855e42a4685d170858af306Eliad Peller wl1271_ps_elp_sleep(wl); 755c1b193eb6557279d037ab18c00ab628c6c78847fEliad Pellerout: 756f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho mutex_unlock(&wl->mutex); 757f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 758f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 759d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchsstatic u8 wl1271_tx_get_rate_flags(u8 rate_class_index) 760d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs{ 761defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs u8 flags = 0; 762defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs 76343a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov /* 76443a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov * TODO: use wl12xx constants when this code is moved to wl12xx, as 76543a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov * only it uses Tx-completion. 76643a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov */ 76743a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov if (rate_class_index <= 8) 768defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs flags |= IEEE80211_TX_RC_MCS; 76943a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov 77043a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov /* 77143a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov * TODO: use wl12xx constants when this code is moved to wl12xx, as 77243a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov * only it uses Tx-completion. 77343a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov */ 77443a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov if (rate_class_index == 0) 775defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs flags |= IEEE80211_TX_RC_SHORT_GI; 77643a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov 777defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs return flags; 778d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs} 779d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs 780f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelhostatic void wl1271_tx_complete_packet(struct wl1271 *wl, 781f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_tx_hw_res_descr *result) 782f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 783f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct ieee80211_tx_info *info; 78448e93e402ad19f570bae323b07911bdf6562af8eEliad Peller struct ieee80211_vif *vif; 78548e93e402ad19f570bae323b07911bdf6562af8eEliad Peller struct wl12xx_vif *wlvif; 786f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct sk_buff *skb; 787f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho int id = result->id; 78831627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen int rate = -1; 789d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs u8 rate_flags = 0; 79031627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen u8 retries = 0; 791f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 792f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* check for id legality */ 79372b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov if (unlikely(id >= wl->num_tx_desc || wl->tx_frames[id] == NULL)) { 794f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_warning("TX result illegal id: %d", id); 795f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return; 796f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 797f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 798f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho skb = wl->tx_frames[id]; 799f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho info = IEEE80211_SKB_CB(skb); 800f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 801990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv if (wl12xx_is_dummy_packet(wl, skb)) { 802ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi wl1271_free_tx_id(wl, id); 803ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi return; 804ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi } 805ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi 80648e93e402ad19f570bae323b07911bdf6562af8eEliad Peller /* info->control is valid as long as we don't update info->status */ 80748e93e402ad19f570bae323b07911bdf6562af8eEliad Peller vif = info->control.vif; 80848e93e402ad19f570bae323b07911bdf6562af8eEliad Peller wlvif = wl12xx_vif_to_data(vif); 80948e93e402ad19f570bae323b07911bdf6562af8eEliad Peller 81031627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen /* update the TX status info */ 81131627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen if (result->status == TX_SUCCESS) { 81231627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) 813f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho info->flags |= IEEE80211_TX_STAT_ACK; 81443a8bc5a53c78b69b99824c9f38c333cea024c8aArik Nemtsov rate = wlcore_rate_to_idx(wl, result->rate_class_index, 8151b92f15ee0e0f06222d4fd36dc36960d217243b3Eliad Peller wlvif->band); 816d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs rate_flags = wl1271_tx_get_rate_flags(result->rate_class_index); 81731627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen retries = result->ack_failures; 81831627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen } else if (result->status == TX_RETRY_EXCEEDED) { 81931627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen wl->stats.excessive_retries++; 82031627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen retries = result->ack_failures; 821f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 822f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 82331627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen info->status.rates[0].idx = rate; 82431627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen info->status.rates[0].count = retries; 825d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs info->status.rates[0].flags = rate_flags; 82631627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen info->status.ack_signal = -1; 82731627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen 828f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl->stats.retry_count += result->ack_failures; 829f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 830b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski /* 831b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski * update sequence number only when relevant, i.e. only in 832b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski * sessions of TKIP, AES and GEM (not in open or WEP sessions) 833b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski */ 834b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski if (info->control.hw_key && 835b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski (info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP || 836b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski info->control.hw_key->cipher == WLAN_CIPHER_SUITE_CCMP || 837b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski info->control.hw_key->cipher == WL1271_CIPHER_SUITE_GEM)) { 838b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski u8 fw_lsb = result->tx_security_sequence_number_lsb; 83948e93e402ad19f570bae323b07911bdf6562af8eEliad Peller u8 cur_lsb = wlvif->tx_security_last_seq_lsb; 840b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski 841b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski /* 842b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski * update security sequence number, taking care of potential 843b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski * wrap-around 844b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski */ 84548e93e402ad19f570bae323b07911bdf6562af8eEliad Peller wlvif->tx_security_seq += (fw_lsb - cur_lsb) & 0xff; 84648e93e402ad19f570bae323b07911bdf6562af8eEliad Peller wlvif->tx_security_last_seq_lsb = fw_lsb; 847b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski } 848ac4e4ce54eb9cb4963a1d3d91fc65536d882ffb2Juuso Oikarinen 8491e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen /* remove private header from packet */ 8501e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 8511e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen 8521e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen /* remove TKIP header space if present */ 8532c0133a437905591cdaa39cf65a3f7188d20a094Arik Nemtsov if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) && 8542c0133a437905591cdaa39cf65a3f7188d20a094Arik Nemtsov info->control.hw_key && 85597359d1235eaf634fe706c9faa6e40181cc95fb8Johannes Berg info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) { 8561e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen int hdrlen = ieee80211_get_hdrlen_from_skb(skb); 8575ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, skb->data, 8585ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller hdrlen); 8595ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller skb_pull(skb, WL1271_EXTRA_SPACE_TKIP); 8601e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen } 861f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 862f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_debug(DEBUG_TX, "tx status id %u skb 0x%p failures %u rate 0x%x" 863f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho " status 0x%x", 864f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho result->id, skb, result->ack_failures, 865f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho result->rate_class_index, result->status); 866f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 867f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* return the packet to the stack */ 868a620865edf62ea2d024bbfe62162244473badfcbIdo Yariv skb_queue_tail(&wl->deferred_tx_queue, skb); 86992ef8960aee2f840c6a54c968d40199843f015c0Eliad Peller queue_work(wl->freezable_wq, &wl->netstack_work); 87025eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl1271_free_tx_id(wl, result->id); 871f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 872f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 873f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho/* Called upon reception of a TX complete interrupt */ 874ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinenvoid wl1271_tx_complete(struct wl1271 *wl) 875f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 876f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_acx_mem_map *memmap = 877f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho (struct wl1271_acx_mem_map *)wl->target_mem_map; 878ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen u32 count, fw_counter; 879f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho u32 i; 880f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 881f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* read the tx results from the chipset */ 8827b048c52d7283ebf07c826a45c631a6ba225c057Teemu Paasikivi wl1271_read(wl, le32_to_cpu(memmap->tx_result), 8837b048c52d7283ebf07c826a45c631a6ba225c057Teemu Paasikivi wl->tx_res_if, sizeof(*wl->tx_res_if), false); 884ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen fw_counter = le32_to_cpu(wl->tx_res_if->tx_result_fw_counter); 885ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen 886ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen /* write host counter to chipset (to ack) */ 887ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen wl1271_write32(wl, le32_to_cpu(memmap->tx_result) + 888ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen offsetof(struct wl1271_tx_hw_res_if, 889ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen tx_result_host_counter), fw_counter); 890ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen 891ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen count = fw_counter - wl->tx_results_count; 89206f7bc7db79fabe6b2ec16eff0f59e4acc21eb72Juuso Oikarinen wl1271_debug(DEBUG_TX, "tx_complete received, packets: %d", count); 893f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 894f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* verify that the result buffer is not getting overrun */ 895ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen if (unlikely(count > TX_HW_RESULT_QUEUE_LEN)) 896f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_warning("TX result overflow from chipset: %d", count); 897f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 898f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* process the results */ 899f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho for (i = 0; i < count; i++) { 900f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_tx_hw_res_descr *result; 901f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho u8 offset = wl->tx_results_count & TX_HW_RESULT_QUEUE_LEN_MASK; 902f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 903f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* process the packet */ 904f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho result = &(wl->tx_res_if->tx_results_queue[offset]); 905f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_tx_complete_packet(wl, result); 906f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 907f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl->tx_results_count++; 908f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 909f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 91053d67a50cd17aca120dff20eb2a93e1665361688Arik NemtsovEXPORT_SYMBOL(wl1271_tx_complete); 911f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 912a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsovvoid wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid) 913a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov{ 914a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct sk_buff *skb; 915f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov int i; 916a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov unsigned long flags; 9171d36cd892c130a5a781acb282e083b94127f1c50Arik Nemtsov struct ieee80211_tx_info *info; 918f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov int total[NUM_TX_QUEUES]; 919a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 920a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) { 921f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov total[i] = 0; 922a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov while ((skb = skb_dequeue(&wl->links[hlid].tx_queue[i]))) { 923a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl1271_debug(DEBUG_TX, "link freeing skb 0x%p", skb); 92479ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov 92579ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov if (!wl12xx_is_dummy_packet(wl, skb)) { 92679ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov info = IEEE80211_SKB_CB(skb); 92779ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov info->status.rates[0].idx = -1; 92879ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov info->status.rates[0].count = 0; 92979ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov ieee80211_tx_status_ni(wl->hw, skb); 93079ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov } 93179ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov 932f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov total[i]++; 933a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 934a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 935a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 936a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov spin_lock_irqsave(&wl->wl_lock, flags); 937f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) 938f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[i] -= total[i]; 939a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov spin_unlock_irqrestore(&wl->wl_lock, flags); 940a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 941a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl1271_handle_tx_low_watermark(wl); 942a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov} 943a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 9447dece1c8e1044287287d44ac183a946333b55fc3Arik Nemtsov/* caller must hold wl->mutex and TX must be stopped */ 945d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellervoid wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif) 946f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 947f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho int i; 948f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 949f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* TX failure */ 950d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller for_each_set_bit(i, wlvif->links_map, WL12XX_MAX_LINKS) { 951d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller if (wlvif->bss_type == BSS_TYPE_AP_BSS) 952c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller wl1271_free_sta(wl, wlvif, i); 953d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller else 954d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wlvif->sta.ba_rx_bitmap = 0; 955f1acea9a9d48174f982e14a7a488b208d39d825fArik Nemtsov 956d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wl->links[i].allocated_pkts = 0; 957d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wl->links[i].prev_freed_pkts = 0; 958f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 959d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wlvif->last_tx_hlid = 0; 960d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller 961d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller} 962d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller/* caller must hold wl->mutex and TX must be stopped */ 9636639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovvoid wl12xx_tx_reset(struct wl1271 *wl) 964d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller{ 965d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller int i; 966d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct sk_buff *skb; 967d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct ieee80211_tx_info *info; 968a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 9696246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov /* only reset the queues if something bad happened */ 9706246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov if (WARN_ON_ONCE(wl1271_tx_total_queue_count(wl) != 0)) { 9716246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov for (i = 0; i < WL12XX_MAX_LINKS; i++) 9726246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov wl1271_tx_reset_link_queues(wl, i); 9736246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov 9746246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) 9756246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov wl->tx_queue_count[i] = 0; 9766246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov } 977f1acea9a9d48174f982e14a7a488b208d39d825fArik Nemtsov 9782fe33e8cff354a3f320549544bffebbbab680145Ido Yariv /* 9792fe33e8cff354a3f320549544bffebbbab680145Ido Yariv * Make sure the driver is at a consistent state, in case this 9802fe33e8cff354a3f320549544bffebbbab680145Ido Yariv * function is called from a context other than interface removal. 9817dece1c8e1044287287d44ac183a946333b55fc3Arik Nemtsov * This call will always wake the TX queues. 9822fe33e8cff354a3f320549544bffebbbab680145Ido Yariv */ 9836639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov wl1271_handle_tx_low_watermark(wl); 9842fe33e8cff354a3f320549544bffebbbab680145Ido Yariv 98572b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov for (i = 0; i < wl->num_tx_desc; i++) { 98650e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv if (wl->tx_frames[i] == NULL) 98750e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv continue; 98850e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv 98950e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv skb = wl->tx_frames[i]; 99050e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv wl1271_free_tx_id(wl, i); 99150e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv wl1271_debug(DEBUG_TX, "freeing skb 0x%p", skb); 99250e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv 993990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv if (!wl12xx_is_dummy_packet(wl, skb)) { 994ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi /* 995ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi * Remove private headers before passing the skb to 996ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi * mac80211 997ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi */ 998ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi info = IEEE80211_SKB_CB(skb); 999ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 10002c0133a437905591cdaa39cf65a3f7188d20a094Arik Nemtsov if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) && 10012c0133a437905591cdaa39cf65a3f7188d20a094Arik Nemtsov info->control.hw_key && 1002ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi info->control.hw_key->cipher == 1003ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi WLAN_CIPHER_SUITE_TKIP) { 1004ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi int hdrlen = ieee80211_get_hdrlen_from_skb(skb); 10055ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, 1006ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi skb->data, hdrlen); 10075ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller skb_pull(skb, WL1271_EXTRA_SPACE_TKIP); 1008ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi } 100950e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv 1010ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi info->status.rates[0].idx = -1; 1011ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi info->status.rates[0].count = 0; 101250e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv 1013c27d3accb6f06b0afedfe472dfe0c8e7d87ff0a6Eliad Peller ieee80211_tx_status_ni(wl->hw, skb); 1014ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi } 101550e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv } 1016781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen} 1017781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen 1018781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen#define WL1271_TX_FLUSH_TIMEOUT 500000 1019781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen 1020781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen/* caller must *NOT* hold wl->mutex */ 1021781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinenvoid wl1271_tx_flush(struct wl1271 *wl) 1022781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen{ 1023781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen unsigned long timeout; 102418aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov int i; 1025781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen timeout = jiffies + usecs_to_jiffies(WL1271_TX_FLUSH_TIMEOUT); 1026781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen 10272c38849f4a247673c8203a569444042e32d82410Arik Nemtsov /* only one flush should be in progress, for consistent queue state */ 10282c38849f4a247673c8203a569444042e32d82410Arik Nemtsov mutex_lock(&wl->flush_mutex); 10292c38849f4a247673c8203a569444042e32d82410Arik Nemtsov 10302c38849f4a247673c8203a569444042e32d82410Arik Nemtsov wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_FLUSH); 10312c38849f4a247673c8203a569444042e32d82410Arik Nemtsov 1032781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen while (!time_after(jiffies, timeout)) { 1033781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen mutex_lock(&wl->mutex); 1034a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl1271_debug(DEBUG_TX, "flushing tx buffer: %d %d", 1035f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_frames_cnt, 1036f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl1271_tx_total_queue_count(wl)); 1037f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov if ((wl->tx_frames_cnt == 0) && 1038f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov (wl1271_tx_total_queue_count(wl) == 0)) { 1039781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen mutex_unlock(&wl->mutex); 10402c38849f4a247673c8203a569444042e32d82410Arik Nemtsov goto out; 1041781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen } 1042781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen mutex_unlock(&wl->mutex); 1043781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen msleep(1); 1044781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen } 1045781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen 1046781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen wl1271_warning("Unable to flush all TX buffers, timed out."); 104718aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov 104818aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov /* forcibly flush all Tx buffers on our queues */ 104918aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov mutex_lock(&wl->mutex); 105018aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov for (i = 0; i < WL12XX_MAX_LINKS; i++) 105118aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov wl1271_tx_reset_link_queues(wl, i); 105218aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov mutex_unlock(&wl->mutex); 10532c38849f4a247673c8203a569444042e32d82410Arik Nemtsov 10542c38849f4a247673c8203a569444042e32d82410Arik Nemtsovout: 10552c38849f4a247673c8203a569444042e32d82410Arik Nemtsov wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_FLUSH); 10562c38849f4a247673c8203a569444042e32d82410Arik Nemtsov mutex_unlock(&wl->flush_mutex); 1057f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 1058a1c597f2b22cdc228de3c58784b00e80b9b53e03Arik NemtsovEXPORT_SYMBOL_GPL(wl1271_tx_flush); 1059e0fe371b74326a85029fe8720506e021fe73905aArik Nemtsov 1060af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Pelleru32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set) 1061e0fe371b74326a85029fe8720506e021fe73905aArik Nemtsov{ 1062af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller if (WARN_ON(!rate_set)) 1063af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller return 0; 1064e0fe371b74326a85029fe8720506e021fe73905aArik Nemtsov 1065af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller return BIT(__ffs(rate_set)); 1066e0fe371b74326a85029fe8720506e021fe73905aArik Nemtsov} 10676639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10686639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovvoid wlcore_stop_queue_locked(struct wl1271 *wl, u8 queue, 10696639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov enum wlcore_queue_stop_reason reason) 10706639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov{ 10716639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov bool stopped = !!wl->queue_stop_reasons[queue]; 10726639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10736639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov /* queue should not be stopped for this reason */ 10746639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov WARN_ON(test_and_set_bit(reason, &wl->queue_stop_reasons[queue])); 10756639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10766639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov if (stopped) 10776639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov return; 10786639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10796639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov ieee80211_stop_queue(wl->hw, wl1271_tx_get_mac80211_queue(queue)); 10806639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov} 10816639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10826639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovvoid wlcore_stop_queue(struct wl1271 *wl, u8 queue, 10836639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov enum wlcore_queue_stop_reason reason) 10846639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov{ 10856639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov unsigned long flags; 10866639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10876639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov spin_lock_irqsave(&wl->wl_lock, flags); 10886639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov wlcore_stop_queue_locked(wl, queue, reason); 10896639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov spin_unlock_irqrestore(&wl->wl_lock, flags); 10906639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov} 10916639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10926639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovvoid wlcore_wake_queue(struct wl1271 *wl, u8 queue, 10936639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov enum wlcore_queue_stop_reason reason) 10946639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov{ 10956639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov unsigned long flags; 10966639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10976639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov spin_lock_irqsave(&wl->wl_lock, flags); 10986639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 10996639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov /* queue should not be clear for this reason */ 11006639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov WARN_ON(!test_and_clear_bit(reason, &wl->queue_stop_reasons[queue])); 11016639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11026639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov if (wl->queue_stop_reasons[queue]) 11036639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov goto out; 11046639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11056639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov ieee80211_wake_queue(wl->hw, wl1271_tx_get_mac80211_queue(queue)); 11066639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11076639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovout: 11086639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov spin_unlock_irqrestore(&wl->wl_lock, flags); 11096639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov} 11106639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11116639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovvoid wlcore_stop_queues(struct wl1271 *wl, 11126639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov enum wlcore_queue_stop_reason reason) 11136639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov{ 11146639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov int i; 11156639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11166639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) 11176639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov wlcore_stop_queue(wl, i, reason); 11186639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov} 1119a1c597f2b22cdc228de3c58784b00e80b9b53e03Arik NemtsovEXPORT_SYMBOL_GPL(wlcore_stop_queues); 11206639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11216639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovvoid wlcore_wake_queues(struct wl1271 *wl, 11226639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov enum wlcore_queue_stop_reason reason) 11236639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov{ 11246639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov int i; 11256639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11266639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) 11276639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov wlcore_wake_queue(wl, i, reason); 11286639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov} 1129a1c597f2b22cdc228de3c58784b00e80b9b53e03Arik NemtsovEXPORT_SYMBOL_GPL(wlcore_wake_queues); 11306639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11316639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovvoid wlcore_reset_stopped_queues(struct wl1271 *wl) 11326639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov{ 11336639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov int i; 11346639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov unsigned long flags; 11356639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11366639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov spin_lock_irqsave(&wl->wl_lock, flags); 11376639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11386639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) { 11396639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov if (!wl->queue_stop_reasons[i]) 11406639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov continue; 11416639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11426639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov wl->queue_stop_reasons[i] = 0; 11436639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov ieee80211_wake_queue(wl->hw, 11446639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov wl1271_tx_get_mac80211_queue(i)); 11456639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov } 11466639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11476639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov spin_unlock_irqrestore(&wl->wl_lock, flags); 11486639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov} 11496639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11506639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovbool wlcore_is_queue_stopped_by_reason(struct wl1271 *wl, u8 queue, 11516639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov enum wlcore_queue_stop_reason reason) 11526639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov{ 11536639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov return test_bit(reason, &wl->queue_stop_reasons[queue]); 11546639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov} 11556639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov 11566639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsovbool wlcore_is_queue_stopped(struct wl1271 *wl, u8 queue) 11576639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov{ 11586639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov return !!wl->queue_stop_reasons[queue]; 11596639611467f34038aa63c5cb9f8d9e48171d6022Arik Nemtsov} 1160