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f5fc0f86b0
This driver supports the wl1271 chipset from Texas Instruments based on the WiLink(tm) 6.0 mobile platform. Support for wl1273 should be relatively easy to add. This chipset is designed for embedded devices, with good powersaving capabilities. The wl1271 chipset is the successor of wl1251 and supports the 802.11b/g/n standards, but currently this driver supports only b/g. More information about this chipset can be found here: http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12762&contentId=29993 Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
131 lines
4.4 KiB
C
131 lines
4.4 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __WL1271_TX_H__
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#define __WL1271_TX_H__
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#define TX_HW_BLOCK_SPARE 2
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#define TX_HW_BLOCK_SHIFT_DIV 8
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#define TX_HW_MGMT_PKT_LIFETIME_TU 2000
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/* The chipset reference driver states, that the "aid" value 1
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* is for infra-BSS, but is still always used */
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#define TX_HW_DEFAULT_AID 1
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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_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_TX_ALIGN(len) (((len) + WL1271_TX_ALIGN_TO - 1) & \
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~(WL1271_TX_ALIGN_TO - 1))
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#define WL1271_TKIP_IV_SPACE 4
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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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u16 length;
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/* Number of extra memory blocks to allocate for this packet in
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addition to the number of blocks derived from the packet length */
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u8 extra_mem_blocks;
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/* Total number of memory blocks allocated by the host for this packet.
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Must be equal or greater than the actual blocks number allocated by
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HW!! */
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u8 total_mem_blocks;
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/* Device time (in us) when the packet arrived to the driver */
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u32 start_time;
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/* Max delay in TUs until transmission. The last device time the
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packet can be transmitted is: startTime+(1024*LifeTime) */
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u16 life_time;
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/* Bitwise fields - see TX_ATTR... definitions above. */
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u16 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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/* Identifier of the remote STA in IBSS, 1 in infra-BSS */
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u8 aid;
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u8 reserved;
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} __attribute__ ((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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};
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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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u16 medium_usage;
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/* The time passed from host xfer to Tx-complete.*/
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u32 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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u32 medium_delay;
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/* LS-byte of last TKIP seq-num (saved per AC for recovery). */
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u8 lsb_security_sequence_number;
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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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} __attribute__ ((packed));
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struct wl1271_tx_hw_res_if {
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u32 tx_result_fw_counter;
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u32 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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} __attribute__ ((packed));
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void wl1271_tx_work(struct work_struct *work);
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void wl1271_tx_complete(struct wl1271 *wl, u32 count);
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void wl1271_tx_flush(struct wl1271 *wl);
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#endif
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