forked from Minki/linux
c6e387a214
* No code changes...
* Split hw.c to multiple files for better maintenance and add some documentation on each file
code is going to grow soon (eeprom.c for example is going to get much stuff currently developed
on ath_info) so it's better this way.
* Rename following functions to maintain naming scheme:
ah_setup_xtx_desc -> ah_setup_mrr_tx_desc
(Because xtx doesn't say much, it's actually
a multi-rate-retry tx descriptor)
ath5k_hw_put_tx/rx_buf - > ath5k_hw_set_tx/rxdp
ath5k_hw_get_tx/rx_buf -> ath5k_hw_get_tx/rxdp
(We don't put any "buf" we set descriptor pointers on hw)
ath5k_hw_tx_start -> ath5k_hw_start_tx_dma
ath5k_hw_start_rx -> ath5k_hw_start_rx_dma
ath5k_hw_stop_pcu_recv -> ath5k_hw_stop_rx_pcu
(It's easier this way to identify them, we also
have ath5k_hw_start_rx_pcu which completes the
set)
ath5k_hw_set_intr -> ath5k_hw_set_imr
(As in get_isr we set imr here, not "intr")
* Move ath5k_hw_setup_rx_desc on ah->ah_setup_rx_desc so we can
include support for different rx descriptors in the future
* Further cleanups so that checkpatch doesn't complain
(only some > 80 col warnings for eeprom.h and reg.h as usual
due to comments)
Tested on 5211 and 5213 cards and works ok.
Changes-licensed-under: ISC
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
333 lines
12 KiB
C
333 lines
12 KiB
C
/*
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* Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
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* Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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/*
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* Internal RX/TX descriptor structures
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* (rX: reserved fields possibily used by future versions of the ar5k chipset)
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*/
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/*
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* common hardware RX control descriptor
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*/
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struct ath5k_hw_rx_ctl {
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u32 rx_control_0; /* RX control word 0 */
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u32 rx_control_1; /* RX control word 1 */
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} __packed;
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/* RX control word 0 field/sflags */
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#define AR5K_DESC_RX_CTL0 0x00000000
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/* RX control word 1 fields/flags */
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#define AR5K_DESC_RX_CTL1_BUF_LEN 0x00000fff
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#define AR5K_DESC_RX_CTL1_INTREQ 0x00002000
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/*
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* common hardware RX status descriptor
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* 5210/11 and 5212 differ only in the flags defined below
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*/
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struct ath5k_hw_rx_status {
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u32 rx_status_0; /* RX status word 0 */
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u32 rx_status_1; /* RX status word 1 */
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} __packed;
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/* 5210/5211 */
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/* RX status word 0 fields/flags */
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#define AR5K_5210_RX_DESC_STATUS0_DATA_LEN 0x00000fff
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#define AR5K_5210_RX_DESC_STATUS0_MORE 0x00001000
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#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_RATE 0x00078000
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#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_RATE_S 15
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#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_SIGNAL 0x07f80000
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#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_SIGNAL_S 19
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#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_ANTENNA 0x38000000
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#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_ANTENNA_S 27
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/* RX status word 1 fields/flags */
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#define AR5K_5210_RX_DESC_STATUS1_DONE 0x00000001
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#define AR5K_5210_RX_DESC_STATUS1_FRAME_RECEIVE_OK 0x00000002
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#define AR5K_5210_RX_DESC_STATUS1_CRC_ERROR 0x00000004
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#define AR5K_5210_RX_DESC_STATUS1_FIFO_OVERRUN 0x00000008
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#define AR5K_5210_RX_DESC_STATUS1_DECRYPT_CRC_ERROR 0x00000010
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#define AR5K_5210_RX_DESC_STATUS1_PHY_ERROR 0x000000e0
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#define AR5K_5210_RX_DESC_STATUS1_PHY_ERROR_S 5
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#define AR5K_5210_RX_DESC_STATUS1_KEY_INDEX_VALID 0x00000100
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#define AR5K_5210_RX_DESC_STATUS1_KEY_INDEX 0x00007e00
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#define AR5K_5210_RX_DESC_STATUS1_KEY_INDEX_S 9
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#define AR5K_5210_RX_DESC_STATUS1_RECEIVE_TIMESTAMP 0x0fff8000
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#define AR5K_5210_RX_DESC_STATUS1_RECEIVE_TIMESTAMP_S 15
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#define AR5K_5210_RX_DESC_STATUS1_KEY_CACHE_MISS 0x10000000
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/* 5212 */
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/* RX status word 0 fields/flags */
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#define AR5K_5212_RX_DESC_STATUS0_DATA_LEN 0x00000fff
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#define AR5K_5212_RX_DESC_STATUS0_MORE 0x00001000
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#define AR5K_5212_RX_DESC_STATUS0_DECOMP_CRC_ERROR 0x00002000
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#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_RATE 0x000f8000
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#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_RATE_S 15
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#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_SIGNAL 0x0ff00000
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#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_SIGNAL_S 20
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#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_ANTENNA 0xf0000000
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#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_ANTENNA_S 28
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/* RX status word 1 fields/flags */
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#define AR5K_5212_RX_DESC_STATUS1_DONE 0x00000001
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#define AR5K_5212_RX_DESC_STATUS1_FRAME_RECEIVE_OK 0x00000002
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#define AR5K_5212_RX_DESC_STATUS1_CRC_ERROR 0x00000004
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#define AR5K_5212_RX_DESC_STATUS1_DECRYPT_CRC_ERROR 0x00000008
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#define AR5K_5212_RX_DESC_STATUS1_PHY_ERROR 0x00000010
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#define AR5K_5212_RX_DESC_STATUS1_MIC_ERROR 0x00000020
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#define AR5K_5212_RX_DESC_STATUS1_KEY_INDEX_VALID 0x00000100
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#define AR5K_5212_RX_DESC_STATUS1_KEY_INDEX 0x0000fe00
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#define AR5K_5212_RX_DESC_STATUS1_KEY_INDEX_S 9
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#define AR5K_5212_RX_DESC_STATUS1_RECEIVE_TIMESTAMP 0x7fff0000
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#define AR5K_5212_RX_DESC_STATUS1_RECEIVE_TIMESTAMP_S 16
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#define AR5K_5212_RX_DESC_STATUS1_KEY_CACHE_MISS 0x80000000
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/*
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* common hardware RX error descriptor
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*/
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struct ath5k_hw_rx_error {
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u32 rx_error_0; /* RX status word 0 */
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u32 rx_error_1; /* RX status word 1 */
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} __packed;
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/* RX error word 0 fields/flags */
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#define AR5K_RX_DESC_ERROR0 0x00000000
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/* RX error word 1 fields/flags */
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#define AR5K_RX_DESC_ERROR1_PHY_ERROR_CODE 0x0000ff00
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#define AR5K_RX_DESC_ERROR1_PHY_ERROR_CODE_S 8
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/* PHY Error codes */
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#define AR5K_DESC_RX_PHY_ERROR_NONE 0x00
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#define AR5K_DESC_RX_PHY_ERROR_TIMING 0x20
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#define AR5K_DESC_RX_PHY_ERROR_PARITY 0x40
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#define AR5K_DESC_RX_PHY_ERROR_RATE 0x60
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#define AR5K_DESC_RX_PHY_ERROR_LENGTH 0x80
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#define AR5K_DESC_RX_PHY_ERROR_64QAM 0xa0
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#define AR5K_DESC_RX_PHY_ERROR_SERVICE 0xc0
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#define AR5K_DESC_RX_PHY_ERROR_TRANSMITOVR 0xe0
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/*
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* 5210/5211 hardware 2-word TX control descriptor
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*/
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struct ath5k_hw_2w_tx_ctl {
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u32 tx_control_0; /* TX control word 0 */
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u32 tx_control_1; /* TX control word 1 */
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} __packed;
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/* TX control word 0 fields/flags */
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#define AR5K_2W_TX_DESC_CTL0_FRAME_LEN 0x00000fff
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#define AR5K_2W_TX_DESC_CTL0_HEADER_LEN 0x0003f000 /*[5210 ?]*/
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#define AR5K_2W_TX_DESC_CTL0_HEADER_LEN_S 12
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#define AR5K_2W_TX_DESC_CTL0_XMIT_RATE 0x003c0000
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#define AR5K_2W_TX_DESC_CTL0_XMIT_RATE_S 18
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#define AR5K_2W_TX_DESC_CTL0_RTSENA 0x00400000
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#define AR5K_2W_TX_DESC_CTL0_CLRDMASK 0x01000000
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#define AR5K_2W_TX_DESC_CTL0_LONG_PACKET 0x00800000 /*[5210]*/
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#define AR5K_2W_TX_DESC_CTL0_VEOL 0x00800000 /*[5211]*/
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#define AR5K_2W_TX_DESC_CTL0_FRAME_TYPE 0x1c000000 /*[5210]*/
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#define AR5K_2W_TX_DESC_CTL0_FRAME_TYPE_S 26
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#define AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_5210 0x02000000
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#define AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_5211 0x1e000000
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#define AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT \
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(ah->ah_version == AR5K_AR5210 ? \
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AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_5210 : \
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AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_5211)
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#define AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_S 25
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#define AR5K_2W_TX_DESC_CTL0_INTREQ 0x20000000
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#define AR5K_2W_TX_DESC_CTL0_ENCRYPT_KEY_VALID 0x40000000
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/* TX control word 1 fields/flags */
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#define AR5K_2W_TX_DESC_CTL1_BUF_LEN 0x00000fff
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#define AR5K_2W_TX_DESC_CTL1_MORE 0x00001000
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#define AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_5210 0x0007e000
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#define AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_5211 0x000fe000
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#define AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX \
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(ah->ah_version == AR5K_AR5210 ? \
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AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_5210 : \
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AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_5211)
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#define AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_S 13
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#define AR5K_2W_TX_DESC_CTL1_FRAME_TYPE 0x00700000 /*[5211]*/
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#define AR5K_2W_TX_DESC_CTL1_FRAME_TYPE_S 20
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#define AR5K_2W_TX_DESC_CTL1_NOACK 0x00800000 /*[5211]*/
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#define AR5K_2W_TX_DESC_CTL1_RTS_DURATION 0xfff80000 /*[5210 ?]*/
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/* Frame types */
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#define AR5K_AR5210_TX_DESC_FRAME_TYPE_NORMAL 0x00
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#define AR5K_AR5210_TX_DESC_FRAME_TYPE_ATIM 0x04
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#define AR5K_AR5210_TX_DESC_FRAME_TYPE_PSPOLL 0x08
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#define AR5K_AR5210_TX_DESC_FRAME_TYPE_NO_DELAY 0x0c
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#define AR5K_AR5210_TX_DESC_FRAME_TYPE_PIFS 0x10
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/*
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* 5212 hardware 4-word TX control descriptor
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*/
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struct ath5k_hw_4w_tx_ctl {
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u32 tx_control_0; /* TX control word 0 */
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#define AR5K_4W_TX_DESC_CTL0_FRAME_LEN 0x00000fff
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#define AR5K_4W_TX_DESC_CTL0_XMIT_POWER 0x003f0000
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#define AR5K_4W_TX_DESC_CTL0_XMIT_POWER_S 16
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#define AR5K_4W_TX_DESC_CTL0_RTSENA 0x00400000
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#define AR5K_4W_TX_DESC_CTL0_VEOL 0x00800000
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#define AR5K_4W_TX_DESC_CTL0_CLRDMASK 0x01000000
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#define AR5K_4W_TX_DESC_CTL0_ANT_MODE_XMIT 0x1e000000
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#define AR5K_4W_TX_DESC_CTL0_ANT_MODE_XMIT_S 25
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#define AR5K_4W_TX_DESC_CTL0_INTREQ 0x20000000
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#define AR5K_4W_TX_DESC_CTL0_ENCRYPT_KEY_VALID 0x40000000
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#define AR5K_4W_TX_DESC_CTL0_CTSENA 0x80000000
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u32 tx_control_1; /* TX control word 1 */
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#define AR5K_4W_TX_DESC_CTL1_BUF_LEN 0x00000fff
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#define AR5K_4W_TX_DESC_CTL1_MORE 0x00001000
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#define AR5K_4W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX 0x000fe000
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#define AR5K_4W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_S 13
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#define AR5K_4W_TX_DESC_CTL1_FRAME_TYPE 0x00f00000
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#define AR5K_4W_TX_DESC_CTL1_FRAME_TYPE_S 20
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#define AR5K_4W_TX_DESC_CTL1_NOACK 0x01000000
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#define AR5K_4W_TX_DESC_CTL1_COMP_PROC 0x06000000
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#define AR5K_4W_TX_DESC_CTL1_COMP_PROC_S 25
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#define AR5K_4W_TX_DESC_CTL1_COMP_IV_LEN 0x18000000
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#define AR5K_4W_TX_DESC_CTL1_COMP_IV_LEN_S 27
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#define AR5K_4W_TX_DESC_CTL1_COMP_ICV_LEN 0x60000000
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#define AR5K_4W_TX_DESC_CTL1_COMP_ICV_LEN_S 29
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u32 tx_control_2; /* TX control word 2 */
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#define AR5K_4W_TX_DESC_CTL2_RTS_DURATION 0x00007fff
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#define AR5K_4W_TX_DESC_CTL2_DURATION_UPDATE_ENABLE 0x00008000
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#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES0 0x000f0000
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#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES0_S 16
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#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES1 0x00f00000
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#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES1_S 20
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#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES2 0x0f000000
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#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES2_S 24
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#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES3 0xf0000000
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#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES3_S 28
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u32 tx_control_3; /* TX control word 3 */
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#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE0 0x0000001f
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#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE1 0x000003e0
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#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE1_S 5
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#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE2 0x00007c00
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#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE2_S 10
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#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE3 0x000f8000
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#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE3_S 15
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#define AR5K_4W_TX_DESC_CTL3_RTS_CTS_RATE 0x01f00000
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#define AR5K_4W_TX_DESC_CTL3_RTS_CTS_RATE_S 20
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} __packed;
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/*
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* Common TX status descriptor
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*/
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struct ath5k_hw_tx_status {
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u32 tx_status_0; /* TX status word 0 */
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u32 tx_status_1; /* TX status word 1 */
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} __packed;
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/* TX status word 0 fields/flags */
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#define AR5K_DESC_TX_STATUS0_FRAME_XMIT_OK 0x00000001
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#define AR5K_DESC_TX_STATUS0_EXCESSIVE_RETRIES 0x00000002
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#define AR5K_DESC_TX_STATUS0_FIFO_UNDERRUN 0x00000004
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#define AR5K_DESC_TX_STATUS0_FILTERED 0x00000008
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/*???
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#define AR5K_DESC_TX_STATUS0_RTS_FAIL_COUNT 0x000000f0
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#define AR5K_DESC_TX_STATUS0_RTS_FAIL_COUNT_S 4
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*/
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#define AR5K_DESC_TX_STATUS0_SHORT_RETRY_COUNT 0x000000f0
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#define AR5K_DESC_TX_STATUS0_SHORT_RETRY_COUNT_S 4
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/*???
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#define AR5K_DESC_TX_STATUS0_DATA_FAIL_COUNT 0x00000f00
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#define AR5K_DESC_TX_STATUS0_DATA_FAIL_COUNT_S 8
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*/
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#define AR5K_DESC_TX_STATUS0_LONG_RETRY_COUNT 0x00000f00
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#define AR5K_DESC_TX_STATUS0_LONG_RETRY_COUNT_S 8
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#define AR5K_DESC_TX_STATUS0_VIRT_COLL_COUNT 0x0000f000
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#define AR5K_DESC_TX_STATUS0_VIRT_COLL_COUNT_S 12
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#define AR5K_DESC_TX_STATUS0_SEND_TIMESTAMP 0xffff0000
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#define AR5K_DESC_TX_STATUS0_SEND_TIMESTAMP_S 16
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/* TX status word 1 fields/flags */
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#define AR5K_DESC_TX_STATUS1_DONE 0x00000001
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#define AR5K_DESC_TX_STATUS1_SEQ_NUM 0x00001ffe
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#define AR5K_DESC_TX_STATUS1_SEQ_NUM_S 1
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#define AR5K_DESC_TX_STATUS1_ACK_SIG_STRENGTH 0x001fe000
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#define AR5K_DESC_TX_STATUS1_ACK_SIG_STRENGTH_S 13
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#define AR5K_DESC_TX_STATUS1_FINAL_TS_INDEX 0x00600000
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#define AR5K_DESC_TX_STATUS1_FINAL_TS_INDEX_S 21
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#define AR5K_DESC_TX_STATUS1_COMP_SUCCESS 0x00800000
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#define AR5K_DESC_TX_STATUS1_XMIT_ANTENNA 0x01000000
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/*
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* 5210/5211 hardware TX descriptor
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*/
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struct ath5k_hw_5210_tx_desc {
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struct ath5k_hw_2w_tx_ctl tx_ctl;
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struct ath5k_hw_tx_status tx_stat;
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} __packed;
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/*
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* 5212 hardware TX descriptor
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*/
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struct ath5k_hw_5212_tx_desc {
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struct ath5k_hw_4w_tx_ctl tx_ctl;
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struct ath5k_hw_tx_status tx_stat;
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} __packed;
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/*
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* common hardware RX descriptor
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*/
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struct ath5k_hw_all_rx_desc {
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struct ath5k_hw_rx_ctl rx_ctl;
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union {
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struct ath5k_hw_rx_status rx_stat;
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struct ath5k_hw_rx_error rx_err;
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} u;
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} __packed;
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/*
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* Atheros hardware descriptor
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* This is read and written to by the hardware
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*/
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struct ath5k_desc {
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u32 ds_link; /* physical address of the next descriptor */
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u32 ds_data; /* physical address of data buffer (skb) */
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union {
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struct ath5k_hw_5210_tx_desc ds_tx5210;
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struct ath5k_hw_5212_tx_desc ds_tx5212;
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struct ath5k_hw_all_rx_desc ds_rx;
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} ud;
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} __packed;
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#define AR5K_RXDESC_INTREQ 0x0020
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#define AR5K_TXDESC_CLRDMASK 0x0001
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#define AR5K_TXDESC_NOACK 0x0002 /*[5211+]*/
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#define AR5K_TXDESC_RTSENA 0x0004
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#define AR5K_TXDESC_CTSENA 0x0008
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#define AR5K_TXDESC_INTREQ 0x0010
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#define AR5K_TXDESC_VEOL 0x0020 /*[5211+]*/
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