/* * This file is part of wl1271 * * Copyright (C) 1998-2009 Texas Instruments. All rights reserved. * Copyright (C) 2009 Nokia Corporation * * Contact: Luciano Coelho * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * */ #ifndef __WL1271_TX_H__ #define __WL1271_TX_H__ #define TX_HW_BLOCK_SPARE 2 #define TX_HW_BLOCK_SIZE 252 #define TX_HW_MGMT_PKT_LIFETIME_TU 2000 /* The chipset reference driver states, that the "aid" value 1 * is for infra-BSS, but is still always used */ #define TX_HW_DEFAULT_AID 1 #define TX_HW_ATTR_SAVE_RETRIES BIT(0) #define TX_HW_ATTR_HEADER_PAD BIT(1) #define TX_HW_ATTR_SESSION_COUNTER (BIT(2) | BIT(3) | BIT(4)) #define TX_HW_ATTR_RATE_POLICY (BIT(5) | BIT(6) | BIT(7) | \ BIT(8) | BIT(9)) #define TX_HW_ATTR_LAST_WORD_PAD (BIT(10) | BIT(11)) #define TX_HW_ATTR_TX_CMPLT_REQ BIT(12) #define TX_HW_ATTR_OFST_SAVE_RETRIES 0 #define TX_HW_ATTR_OFST_HEADER_PAD 1 #define TX_HW_ATTR_OFST_SESSION_COUNTER 2 #define TX_HW_ATTR_OFST_RATE_POLICY 5 #define TX_HW_ATTR_OFST_LAST_WORD_PAD 10 #define TX_HW_ATTR_OFST_TX_CMPLT_REQ 12 #define TX_HW_RESULT_QUEUE_LEN 16 #define TX_HW_RESULT_QUEUE_LEN_MASK 0xf #define WL1271_TX_ALIGN_TO 4 #define WL1271_TX_ALIGN(len) (((len) + WL1271_TX_ALIGN_TO - 1) & \ ~(WL1271_TX_ALIGN_TO - 1)) #define WL1271_TKIP_IV_SPACE 4 struct wl1271_tx_hw_descr { /* Length of packet in words, including descriptor+header+data */ __le16 length; /* Number of extra memory blocks to allocate for this packet in addition to the number of blocks derived from the packet length */ u8 extra_mem_blocks; /* Total number of memory blocks allocated by the host for this packet. Must be equal or greater than the actual blocks number allocated by HW!! */ u8 total_mem_blocks; /* Device time (in us) when the packet arrived to the driver */ __le32 start_time; /* Max delay in TUs until transmission. The last device time the packet can be transmitted is: startTime+(1024*LifeTime) */ __le16 life_time; /* Bitwise fields - see TX_ATTR... definitions above. */ __le16 tx_attr; /* Packet identifier used also in the Tx-Result. */ u8 id; /* The packet TID value (as User-Priority) */ u8 tid; /* Identifier of the remote STA in IBSS, 1 in infra-BSS */ u8 aid; u8 reserved; } __attribute__ ((packed)); enum wl1271_tx_hw_res_status { TX_SUCCESS = 0, TX_HW_ERROR = 1, TX_DISABLED = 2, TX_RETRY_EXCEEDED = 3, TX_TIMEOUT = 4, TX_KEY_NOT_FOUND = 5, TX_PEER_NOT_FOUND = 6, TX_SESSION_MISMATCH = 7 }; struct wl1271_tx_hw_res_descr { /* Packet Identifier - same value used in the Tx descriptor.*/ u8 id; /* The status of the transmission, indicating success or one of several possible reasons for failure. */ u8 status; /* Total air access duration including all retrys and overheads.*/ __le16 medium_usage; /* The time passed from host xfer to Tx-complete.*/ __le32 fw_handling_time; /* Total media delay (from 1st EDCA AIFS counter until TX Complete). */ __le32 medium_delay; /* LS-byte of last TKIP seq-num (saved per AC for recovery). */ u8 lsb_security_sequence_number; /* Retry count - number of transmissions without successful ACK.*/ u8 ack_failures; /* The rate that succeeded getting ACK (Valid only if status=SUCCESS). */ u8 rate_class_index; /* for 4-byte alignment. */ u8 spare; } __attribute__ ((packed)); struct wl1271_tx_hw_res_if { __le32 tx_result_fw_counter; __le32 tx_result_host_counter; struct wl1271_tx_hw_res_descr tx_results_queue[TX_HW_RESULT_QUEUE_LEN]; } __attribute__ ((packed)); static inline int wl1271_tx_get_queue(int queue) { /* FIXME: use best effort until WMM is enabled */ return CONF_TX_AC_BE; switch (queue) { case 0: return CONF_TX_AC_VO; case 1: return CONF_TX_AC_VI; case 2: return CONF_TX_AC_BE; case 3: return CONF_TX_AC_BK; default: return CONF_TX_AC_BE; } } /* wl1271 tx descriptor needs the tid and we need to convert it from ac */ static inline int wl1271_tx_ac_to_tid(int ac) { switch (ac) { case 0: return 0; case 1: return 2; case 2: return 4; case 3: return 6; default: return 0; } } void wl1271_tx_work(struct work_struct *work); void wl1271_tx_complete(struct wl1271 *wl); void wl1271_tx_flush(struct wl1271 *wl); #endif