| /* |
| * This file is part of wl1271 |
| * |
| * Copyright (C) 1998-2009 Texas Instruments. All rights reserved. |
| * Copyright (C) 2009 Nokia Corporation |
| * |
| * Contact: Luciano Coelho <luciano.coelho@nokia.com> |
| * |
| * 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 __TX_H__ |
| #define __TX_H__ |
| |
| #define TX_HW_BLOCK_SIZE 252 |
| |
| #define TX_HW_MGMT_PKT_LIFETIME_TU 2000 |
| #define TX_HW_AP_MODE_PKT_LIFETIME_TU 8000 |
| /* 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_TX_DUMMY_REQ BIT(13) |
| |
| #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_TKIP_IV_SPACE 4 |
| |
| /* Used for management frames and dummy packets */ |
| #define WL1271_TID_MGMT 7 |
| |
| struct wl127x_tx_mem { |
| /* |
| * Number of extra memory blocks to allocate for this packet |
| * in addition to the number of blocks derived from the packet |
| * length. |
| */ |
| u8 extra_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; |
| } __packed; |
| |
| struct wl128x_tx_mem { |
| /* |
| * Total number of memory blocks allocated by the host for |
| * this packet. |
| */ |
| u8 total_mem_blocks; |
| /* |
| * Number of extra bytes, at the end of the frame. the host |
| * uses this padding to complete each frame to integer number |
| * of SDIO blocks. |
| */ |
| u8 extra_bytes; |
| } __packed; |
| |
| /* |
| * On wl128x based devices, when TX packets are aggregated, each packet |
| * size must be aligned to the SDIO block size. The maximum block size |
| * is bounded by the type of the padded bytes field that is sent to the |
| * FW. Currently the type is u8, so the maximum block size is 256 bytes. |
| */ |
| #define WL12XX_BUS_BLOCK_SIZE min(512u, \ |
| (1u << (8 * sizeof(((struct wl128x_tx_mem *) 0)->extra_bytes)))) |
| |
| struct wl1271_tx_hw_descr { |
| /* Length of packet in words, including descriptor+header+data */ |
| __le16 length; |
| union { |
| struct wl127x_tx_mem wl127x_mem; |
| struct wl128x_tx_mem wl128x_mem; |
| } __packed; |
| /* 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: start_time + (1024 * life_time) |
| */ |
| __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; |
| union { |
| /* STA - Identifier of the remote STA in IBSS, 1 in infra-BSS */ |
| u8 aid; |
| /* AP - host link ID (HLID) */ |
| u8 hlid; |
| } __packed; |
| u8 reserved; |
| } __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; |
| } __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]; |
| } __packed; |
| |
| static inline int wl1271_tx_get_queue(int queue) |
| { |
| 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; |
| } |
| } |
| |
| void wl1271_tx_work(struct work_struct *work); |
| void wl1271_tx_work_locked(struct wl1271 *wl); |
| void wl1271_tx_complete(struct wl1271 *wl); |
| void wl1271_tx_reset(struct wl1271 *wl); |
| void wl1271_tx_flush(struct wl1271 *wl); |
| u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band); |
| u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set); |
| u32 wl1271_tx_min_rate_get(struct wl1271 *wl); |
| u8 wl1271_tx_get_hlid(struct sk_buff *skb); |
| void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid); |
| void wl1271_handle_tx_low_watermark(struct wl1271 *wl); |
| |
| #endif |