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
21struct 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
32struct tx_policy_cache_entry {
33	struct tx_policy policy;
34	struct list_head link;
35};
36
37#define TX_POLICY_CACHE_SIZE	(8)
38struct 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 */
52void tx_policy_init(struct cw1200_common *priv);
53void tx_policy_upload_work(struct work_struct *work);
54void tx_policy_clean(struct cw1200_common *priv);
55
56/* ******************************************************************** */
57/* TX implementation							*/
58
59u32 cw1200_rate_mask_to_wsm(struct cw1200_common *priv,
60			       u32 rates);
61void cw1200_tx(struct ieee80211_hw *dev,
62	       struct ieee80211_tx_control *control,
63	       struct sk_buff *skb);
64void cw1200_skb_dtor(struct cw1200_common *priv,
65		     struct sk_buff *skb,
66		     const struct cw1200_txpriv *txpriv);
67
68/* ******************************************************************** */
69/* WSM callbacks							*/
70
71void cw1200_tx_confirm_cb(struct cw1200_common *priv,
72			  int link_id,
73			  struct wsm_tx_confirm *arg);
74void 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
82void cw1200_tx_timeout(struct work_struct *work);
83
84/* ******************************************************************** */
85/* Security								*/
86int cw1200_alloc_key(struct cw1200_common *priv);
87void cw1200_free_key(struct cw1200_common *priv, int idx);
88void cw1200_free_keys(struct cw1200_common *priv);
89int cw1200_upload_keys(struct cw1200_common *priv);
90
91/* ******************************************************************** */
92/* Workaround for WFD test case 6.1.10					*/
93void cw1200_link_id_reset(struct work_struct *work);
94
95#define CW1200_LINK_ID_GC_TIMEOUT ((unsigned long)(10 * HZ))
96
97int cw1200_find_link_id(struct cw1200_common *priv, const u8 *mac);
98int cw1200_alloc_link_id(struct cw1200_common *priv, const u8 *mac);
99void cw1200_link_id_work(struct work_struct *work);
100void cw1200_link_id_gc_work(struct work_struct *work);
101
102
103#endif /* CW1200_TXRX_H */
104