1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Datapath interface for ST-Ericsson CW1200 mac80211 drivers 4 * 5 * Copyright (c) 2010, ST-Ericsson 6 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no> 7 */ 8 9 #ifndef CW1200_TXRX_H 10 #define CW1200_TXRX_H 11 12 #include <linux/list.h> 13 14 /* extern */ struct ieee80211_hw; 15 /* extern */ struct sk_buff; 16 /* extern */ struct wsm_tx; 17 /* extern */ struct wsm_rx; 18 /* extern */ struct wsm_tx_confirm; 19 /* extern */ struct cw1200_txpriv; 20 21 struct tx_policy { 22 union { 23 __le32 tbl[3]; 24 u8 raw[12]; 25 }; 26 u8 defined; 27 u8 usage_count; 28 u8 retry_count; 29 u8 uploaded; 30 }; 31 32 struct tx_policy_cache_entry { 33 struct tx_policy policy; 34 struct list_head link; 35 }; 36 37 #define TX_POLICY_CACHE_SIZE (8) 38 struct tx_policy_cache { 39 struct tx_policy_cache_entry cache[TX_POLICY_CACHE_SIZE]; 40 struct list_head used; 41 struct list_head free; 42 spinlock_t lock; /* Protect policy cache */ 43 }; 44 45 /* ******************************************************************** */ 46 /* TX policy cache */ 47 /* Intention of TX policy cache is an overcomplicated WSM API. 48 * Device does not accept per-PDU tx retry sequence. 49 * It uses "tx retry policy id" instead, so driver code has to sync 50 * linux tx retry sequences with a retry policy table in the device. 51 */ 52 void tx_policy_init(struct cw1200_common *priv); 53 void tx_policy_upload_work(struct work_struct *work); 54 void tx_policy_clean(struct cw1200_common *priv); 55 56 /* ******************************************************************** */ 57 /* TX implementation */ 58 59 u32 cw1200_rate_mask_to_wsm(struct cw1200_common *priv, 60 u32 rates); 61 void cw1200_tx(struct ieee80211_hw *dev, 62 struct ieee80211_tx_control *control, 63 struct sk_buff *skb); 64 void cw1200_skb_dtor(struct cw1200_common *priv, 65 struct sk_buff *skb, 66 const struct cw1200_txpriv *txpriv); 67 68 /* ******************************************************************** */ 69 /* WSM callbacks */ 70 71 void cw1200_tx_confirm_cb(struct cw1200_common *priv, 72 int link_id, 73 struct wsm_tx_confirm *arg); 74 void cw1200_rx_cb(struct cw1200_common *priv, 75 struct wsm_rx *arg, 76 int link_id, 77 struct sk_buff **skb_p); 78 79 /* ******************************************************************** */ 80 /* Timeout */ 81 82 void cw1200_tx_timeout(struct work_struct *work); 83 84 /* ******************************************************************** */ 85 /* Security */ 86 int cw1200_alloc_key(struct cw1200_common *priv); 87 void cw1200_free_key(struct cw1200_common *priv, int idx); 88 void cw1200_free_keys(struct cw1200_common *priv); 89 int cw1200_upload_keys(struct cw1200_common *priv); 90 91 /* ******************************************************************** */ 92 /* Workaround for WFD test case 6.1.10 */ 93 void cw1200_link_id_reset(struct work_struct *work); 94 95 #define CW1200_LINK_ID_GC_TIMEOUT ((unsigned long)(10 * HZ)) 96 97 int cw1200_find_link_id(struct cw1200_common *priv, const u8 *mac); 98 int cw1200_alloc_link_id(struct cw1200_common *priv, const u8 *mac); 99 void cw1200_link_id_work(struct work_struct *work); 100 void cw1200_link_id_gc_work(struct work_struct *work); 101 102 103 #endif /* CW1200_TXRX_H */ 104