1/*
2 * Datapath interface for ST-Ericsson CW1200 mac80211 drivers
3 *
4 * Copyright (c) 2010, ST-Ericsson
5 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#ifndef CW1200_TXRX_H
13#define CW1200_TXRX_H
14
15#include <linux/list.h>
16
17/* extern */ struct ieee80211_hw;
18/* extern */ struct sk_buff;
19/* extern */ struct wsm_tx;
20/* extern */ struct wsm_rx;
21/* extern */ struct wsm_tx_confirm;
22/* extern */ struct cw1200_txpriv;
23
24struct tx_policy {
25	union {
26		__le32 tbl[3];
27		u8 raw[12];
28	};
29	u8  defined;
30	u8  usage_count;
31	u8  retry_count;
32	u8  uploaded;
33};
34
35struct tx_policy_cache_entry {
36	struct tx_policy policy;
37	struct list_head link;
38};
39
40#define TX_POLICY_CACHE_SIZE	(8)
41struct tx_policy_cache {
42	struct tx_policy_cache_entry cache[TX_POLICY_CACHE_SIZE];
43	struct list_head used;
44	struct list_head free;
45	spinlock_t lock; /* Protect policy cache */
46};
47
48/* ******************************************************************** */
49/* TX policy cache							*/
50/* Intention of TX policy cache is an overcomplicated WSM API.
51 * Device does not accept per-PDU tx retry sequence.
52 * It uses "tx retry policy id" instead, so driver code has to sync
53 * linux tx retry sequences with a retry policy table in the device.
54 */
55void tx_policy_init(struct cw1200_common *priv);
56void tx_policy_upload_work(struct work_struct *work);
57void tx_policy_clean(struct cw1200_common *priv);
58
59/* ******************************************************************** */
60/* TX implementation							*/
61
62u32 cw1200_rate_mask_to_wsm(struct cw1200_common *priv,
63			       u32 rates);
64void cw1200_tx(struct ieee80211_hw *dev,
65	       struct ieee80211_tx_control *control,
66	       struct sk_buff *skb);
67void cw1200_skb_dtor(struct cw1200_common *priv,
68		     struct sk_buff *skb,
69		     const struct cw1200_txpriv *txpriv);
70
71/* ******************************************************************** */
72/* WSM callbacks							*/
73
74void cw1200_tx_confirm_cb(struct cw1200_common *priv,
75			  int link_id,
76			  struct wsm_tx_confirm *arg);
77void cw1200_rx_cb(struct cw1200_common *priv,
78		  struct wsm_rx *arg,
79		  int link_id,
80		  struct sk_buff **skb_p);
81
82/* ******************************************************************** */
83/* Timeout								*/
84
85void cw1200_tx_timeout(struct work_struct *work);
86
87/* ******************************************************************** */
88/* Security								*/
89int cw1200_alloc_key(struct cw1200_common *priv);
90void cw1200_free_key(struct cw1200_common *priv, int idx);
91void cw1200_free_keys(struct cw1200_common *priv);
92int cw1200_upload_keys(struct cw1200_common *priv);
93
94/* ******************************************************************** */
95/* Workaround for WFD test case 6.1.10					*/
96void cw1200_link_id_reset(struct work_struct *work);
97
98#define CW1200_LINK_ID_GC_TIMEOUT ((unsigned long)(10 * HZ))
99
100int cw1200_find_link_id(struct cw1200_common *priv, const u8 *mac);
101int cw1200_alloc_link_id(struct cw1200_common *priv, const u8 *mac);
102void cw1200_link_id_work(struct work_struct *work);
103void cw1200_link_id_gc_work(struct work_struct *work);
104
105
106#endif /* CW1200_TXRX_H */
107