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- /*
- * 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_MGMT_PKT_LIFETIME_TU 2000
- #define TX_HW_AP_MODE_PKT_LIFETIME_TU 8000
- #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_HOST_ENCRYPT BIT(14)
- #define TX_HW_ATTR_EAPOL_FRAME BIT(15)
- #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_EXTRA_SPACE_TKIP 4
- #define WL1271_EXTRA_SPACE_AES 8
- #define WL1271_EXTRA_SPACE_MAX 8
- /* Used for management frames and dummy packets */
- #define WL1271_TID_MGMT 7
- /* stop a ROC for pending authentication reply after this time (ms) */
- #define WLCORE_PEND_AUTH_ROC_TIMEOUT 1000
- 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;
- struct wl18xx_tx_mem {
- /*
- * Total number of memory blocks allocated by the host for
- * this packet.
- */
- u8 total_mem_blocks;
- /*
- * control bits
- */
- u8 ctrl;
- } __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;
- struct wl18xx_tx_mem wl18xx_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;
- /* host link ID (HLID) */
- u8 hlid;
- union {
- u8 wl12xx_reserved;
- /*
- * bit 0 -> 0 = udp, 1 = tcp
- * bit 1:7 -> IP header offset
- */
- u8 wl18xx_checksum_data;
- } __packed;
- } __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,
- TX_LINK_NOT_VALID = 8,
- };
- 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 tx_security_sequence_number_lsb;
- /* 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;
- enum wlcore_queue_stop_reason {
- WLCORE_QUEUE_STOP_REASON_WATERMARK,
- WLCORE_QUEUE_STOP_REASON_FW_RESTART,
- WLCORE_QUEUE_STOP_REASON_FLUSH,
- WLCORE_QUEUE_STOP_REASON_SPARE_BLK, /* 18xx specific */
- };
- 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;
- }
- }
- static inline
- int wlcore_tx_get_mac80211_queue(struct wl12xx_vif *wlvif, int queue)
- {
- int mac_queue = wlvif->hw_queue_base;
- switch (queue) {
- case CONF_TX_AC_VO:
- return mac_queue + 0;
- case CONF_TX_AC_VI:
- return mac_queue + 1;
- case CONF_TX_AC_BE:
- return mac_queue + 2;
- case CONF_TX_AC_BK:
- return mac_queue + 3;
- default:
- return mac_queue + 2;
- }
- }
- static inline int wl1271_tx_total_queue_count(struct wl1271 *wl)
- {
- int i, count = 0;
- for (i = 0; i < NUM_TX_QUEUES; i++)
- count += wl->tx_queue_count[i];
- return count;
- }
- void wl1271_tx_work(struct work_struct *work);
- int wlcore_tx_work_locked(struct wl1271 *wl);
- int wlcore_tx_complete(struct wl1271 *wl);
- void wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif);
- void wl12xx_tx_reset(struct wl1271 *wl);
- void wl1271_tx_flush(struct wl1271 *wl);
- u8 wlcore_rate_to_idx(struct wl1271 *wl, u8 rate, enum ieee80211_band band);
- u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set,
- enum ieee80211_band rate_band);
- u32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set);
- u8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif,
- struct sk_buff *skb, struct ieee80211_sta *sta);
- void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid);
- void wl1271_handle_tx_low_watermark(struct wl1271 *wl);
- bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb);
- void wl12xx_rearm_rx_streaming(struct wl1271 *wl, unsigned long *active_hlids);
- unsigned int wlcore_calc_packet_alignment(struct wl1271 *wl,
- unsigned int packet_length);
- void wl1271_free_tx_id(struct wl1271 *wl, int id);
- void wlcore_stop_queue_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif,
- u8 queue, enum wlcore_queue_stop_reason reason);
- void wlcore_stop_queue(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue,
- enum wlcore_queue_stop_reason reason);
- void wlcore_wake_queue(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue,
- enum wlcore_queue_stop_reason reason);
- void wlcore_stop_queues(struct wl1271 *wl,
- enum wlcore_queue_stop_reason reason);
- void wlcore_wake_queues(struct wl1271 *wl,
- enum wlcore_queue_stop_reason reason);
- bool wlcore_is_queue_stopped_by_reason(struct wl1271 *wl,
- struct wl12xx_vif *wlvif, u8 queue,
- enum wlcore_queue_stop_reason reason);
- bool
- wlcore_is_queue_stopped_by_reason_locked(struct wl1271 *wl,
- struct wl12xx_vif *wlvif,
- u8 queue,
- enum wlcore_queue_stop_reason reason);
- bool wlcore_is_queue_stopped_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif,
- u8 queue);
- /* from main.c */
- void wl1271_free_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid);
- void wl12xx_rearm_tx_watchdog_locked(struct wl1271 *wl);
- #endif
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