274 lines
8.0 KiB
C
274 lines
8.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* This file is part of wl1271
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*
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* Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
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* Copyright (C) 2009 Nokia Corporation
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*
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* Contact: Luciano Coelho <luciano.coelho@nokia.com>
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*/
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#ifndef __TX_H__
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#define __TX_H__
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#define TX_HW_MGMT_PKT_LIFETIME_TU 2000
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#define TX_HW_AP_MODE_PKT_LIFETIME_TU 8000
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#define TX_HW_ATTR_SAVE_RETRIES BIT(0)
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#define TX_HW_ATTR_HEADER_PAD BIT(1)
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#define TX_HW_ATTR_SESSION_COUNTER (BIT(2) | BIT(3) | BIT(4))
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#define TX_HW_ATTR_RATE_POLICY (BIT(5) | BIT(6) | BIT(7) | \
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BIT(8) | BIT(9))
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#define TX_HW_ATTR_LAST_WORD_PAD (BIT(10) | BIT(11))
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#define TX_HW_ATTR_TX_CMPLT_REQ BIT(12)
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#define TX_HW_ATTR_TX_DUMMY_REQ BIT(13)
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#define TX_HW_ATTR_HOST_ENCRYPT BIT(14)
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#define TX_HW_ATTR_EAPOL_FRAME BIT(15)
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#define TX_HW_ATTR_OFST_SAVE_RETRIES 0
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#define TX_HW_ATTR_OFST_HEADER_PAD 1
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#define TX_HW_ATTR_OFST_SESSION_COUNTER 2
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#define TX_HW_ATTR_OFST_RATE_POLICY 5
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#define TX_HW_ATTR_OFST_LAST_WORD_PAD 10
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#define TX_HW_ATTR_OFST_TX_CMPLT_REQ 12
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#define TX_HW_RESULT_QUEUE_LEN 16
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#define TX_HW_RESULT_QUEUE_LEN_MASK 0xf
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#define WL1271_TX_ALIGN_TO 4
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#define WL1271_EXTRA_SPACE_TKIP 4
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#define WL1271_EXTRA_SPACE_AES 8
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#define WL1271_EXTRA_SPACE_MAX 8
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/* Used for management frames and dummy packets */
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#define WL1271_TID_MGMT 7
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/* stop a ROC for pending authentication reply after this time (ms) */
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#define WLCORE_PEND_AUTH_ROC_TIMEOUT 1000
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struct wl127x_tx_mem {
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/*
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* Number of extra memory blocks to allocate for this packet
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* in addition to the number of blocks derived from the packet
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* length.
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*/
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u8 extra_blocks;
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/*
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* Total number of memory blocks allocated by the host for
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* this packet. Must be equal or greater than the actual
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* blocks number allocated by HW.
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*/
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u8 total_mem_blocks;
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} __packed;
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struct wl128x_tx_mem {
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/*
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* Total number of memory blocks allocated by the host for
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* this packet.
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*/
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u8 total_mem_blocks;
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/*
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* Number of extra bytes, at the end of the frame. the host
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* uses this padding to complete each frame to integer number
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* of SDIO blocks.
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*/
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u8 extra_bytes;
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} __packed;
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struct wl18xx_tx_mem {
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/*
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* Total number of memory blocks allocated by the host for
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* this packet.
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*/
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u8 total_mem_blocks;
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/*
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* control bits
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*/
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u8 ctrl;
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} __packed;
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/*
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* On wl128x based devices, when TX packets are aggregated, each packet
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* size must be aligned to the SDIO block size. The maximum block size
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* is bounded by the type of the padded bytes field that is sent to the
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* FW. Currently the type is u8, so the maximum block size is 256 bytes.
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*/
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#define WL12XX_BUS_BLOCK_SIZE min(512u, \
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(1u << (8 * sizeof(((struct wl128x_tx_mem *) 0)->extra_bytes))))
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struct wl1271_tx_hw_descr {
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/* Length of packet in words, including descriptor+header+data */
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__le16 length;
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union {
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struct wl127x_tx_mem wl127x_mem;
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struct wl128x_tx_mem wl128x_mem;
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struct wl18xx_tx_mem wl18xx_mem;
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} __packed;
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/* Device time (in us) when the packet arrived to the driver */
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__le32 start_time;
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/*
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* Max delay in TUs until transmission. The last device time the
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* packet can be transmitted is: start_time + (1024 * life_time)
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*/
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__le16 life_time;
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/* Bitwise fields - see TX_ATTR... definitions above. */
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__le16 tx_attr;
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/* Packet identifier used also in the Tx-Result. */
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u8 id;
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/* The packet TID value (as User-Priority) */
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u8 tid;
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/* host link ID (HLID) */
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u8 hlid;
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union {
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u8 wl12xx_reserved;
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/*
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* bit 0 -> 0 = udp, 1 = tcp
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* bit 1:7 -> IP header offset
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*/
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u8 wl18xx_checksum_data;
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} __packed;
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} __packed;
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enum wl1271_tx_hw_res_status {
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TX_SUCCESS = 0,
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TX_HW_ERROR = 1,
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TX_DISABLED = 2,
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TX_RETRY_EXCEEDED = 3,
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TX_TIMEOUT = 4,
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TX_KEY_NOT_FOUND = 5,
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TX_PEER_NOT_FOUND = 6,
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TX_SESSION_MISMATCH = 7,
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TX_LINK_NOT_VALID = 8,
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};
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struct wl1271_tx_hw_res_descr {
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/* Packet Identifier - same value used in the Tx descriptor.*/
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u8 id;
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/* The status of the transmission, indicating success or one of
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several possible reasons for failure. */
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u8 status;
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/* Total air access duration including all retrys and overheads.*/
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__le16 medium_usage;
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/* The time passed from host xfer to Tx-complete.*/
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__le32 fw_handling_time;
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/* Total media delay
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(from 1st EDCA AIFS counter until TX Complete). */
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__le32 medium_delay;
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/* LS-byte of last TKIP seq-num (saved per AC for recovery). */
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u8 tx_security_sequence_number_lsb;
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/* Retry count - number of transmissions without successful ACK.*/
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u8 ack_failures;
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/* The rate that succeeded getting ACK
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(Valid only if status=SUCCESS). */
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u8 rate_class_index;
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/* for 4-byte alignment. */
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u8 spare;
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} __packed;
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struct wl1271_tx_hw_res_if {
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__le32 tx_result_fw_counter;
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__le32 tx_result_host_counter;
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struct wl1271_tx_hw_res_descr tx_results_queue[TX_HW_RESULT_QUEUE_LEN];
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} __packed;
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enum wlcore_queue_stop_reason {
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WLCORE_QUEUE_STOP_REASON_WATERMARK,
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WLCORE_QUEUE_STOP_REASON_FW_RESTART,
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WLCORE_QUEUE_STOP_REASON_FLUSH,
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WLCORE_QUEUE_STOP_REASON_SPARE_BLK, /* 18xx specific */
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};
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static inline int wl1271_tx_get_queue(int queue)
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{
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switch (queue) {
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case 0:
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return CONF_TX_AC_VO;
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case 1:
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return CONF_TX_AC_VI;
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case 2:
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return CONF_TX_AC_BE;
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case 3:
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return CONF_TX_AC_BK;
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default:
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return CONF_TX_AC_BE;
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}
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}
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static inline
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int wlcore_tx_get_mac80211_queue(struct wl12xx_vif *wlvif, int queue)
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{
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int mac_queue = wlvif->hw_queue_base;
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switch (queue) {
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case CONF_TX_AC_VO:
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return mac_queue + 0;
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case CONF_TX_AC_VI:
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return mac_queue + 1;
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case CONF_TX_AC_BE:
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return mac_queue + 2;
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case CONF_TX_AC_BK:
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return mac_queue + 3;
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default:
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return mac_queue + 2;
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}
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}
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static inline int wl1271_tx_total_queue_count(struct wl1271 *wl)
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{
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int i, count = 0;
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for (i = 0; i < NUM_TX_QUEUES; i++)
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count += wl->tx_queue_count[i];
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return count;
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}
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void wl1271_tx_work(struct work_struct *work);
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int wlcore_tx_work_locked(struct wl1271 *wl);
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int wlcore_tx_complete(struct wl1271 *wl);
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void wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif);
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void wl12xx_tx_reset(struct wl1271 *wl);
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void wl1271_tx_flush(struct wl1271 *wl);
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u8 wlcore_rate_to_idx(struct wl1271 *wl, u8 rate, enum nl80211_band band);
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u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set,
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enum nl80211_band rate_band);
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u32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set);
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u8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif,
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struct sk_buff *skb, struct ieee80211_sta *sta);
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void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid);
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void wl1271_handle_tx_low_watermark(struct wl1271 *wl);
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bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb);
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void wl12xx_rearm_rx_streaming(struct wl1271 *wl, unsigned long *active_hlids);
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unsigned int wlcore_calc_packet_alignment(struct wl1271 *wl,
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unsigned int packet_length);
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void wl1271_free_tx_id(struct wl1271 *wl, int id);
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void wlcore_stop_queue_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif,
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u8 queue, enum wlcore_queue_stop_reason reason);
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void wlcore_stop_queue(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue,
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enum wlcore_queue_stop_reason reason);
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void wlcore_wake_queue(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue,
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enum wlcore_queue_stop_reason reason);
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void wlcore_stop_queues(struct wl1271 *wl,
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enum wlcore_queue_stop_reason reason);
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void wlcore_wake_queues(struct wl1271 *wl,
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enum wlcore_queue_stop_reason reason);
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bool wlcore_is_queue_stopped_by_reason(struct wl1271 *wl,
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struct wl12xx_vif *wlvif, u8 queue,
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enum wlcore_queue_stop_reason reason);
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bool
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wlcore_is_queue_stopped_by_reason_locked(struct wl1271 *wl,
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struct wl12xx_vif *wlvif,
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u8 queue,
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enum wlcore_queue_stop_reason reason);
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bool wlcore_is_queue_stopped_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif,
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u8 queue);
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/* from main.c */
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void wl1271_free_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid);
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void wl12xx_rearm_tx_watchdog_locked(struct wl1271 *wl);
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#endif
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