tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Common private data for Silicon Labs WFx chips.
4 *
5 * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
6 * Copyright (c) 2010, ST-Ericsson
7 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
8 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
9 */
10#ifndef WFX_H
11#define WFX_H
12
13#include <linux/completion.h>
14#include <linux/workqueue.h>
15#include <linux/mutex.h>
16#include <linux/nospec.h>
17#include <net/mac80211.h>
18
19#include "bh.h"
20#include "data_tx.h"
21#include "main.h"
22#include "queue.h"
23#include "hif_tx.h"
24
25#define USEC_PER_TXOP 32 // see struct ieee80211_tx_queue_params
26#define USEC_PER_TU 1024
27
28struct hwbus_ops;
29
30struct wfx_dev {
31 struct wfx_platform_data pdata;
32 struct device *dev;
33 struct ieee80211_hw *hw;
34 struct ieee80211_vif *vif[2];
35 struct mac_address addresses[2];
36 const struct hwbus_ops *hwbus_ops;
37 void *hwbus_priv;
38
39 u8 keyset;
40 struct completion firmware_ready;
41 struct hif_ind_startup hw_caps;
42 struct wfx_hif hif;
43 struct delayed_work cooling_timeout_work;
44 bool poll_irq;
45 bool chip_frozen;
46 struct mutex conf_mutex;
47
48 struct wfx_hif_cmd hif_cmd;
49 struct sk_buff_head tx_pending;
50 wait_queue_head_t tx_dequeue;
51 atomic_t tx_lock;
52
53 atomic_t packet_id;
54 u32 key_map;
55
56 struct hif_rx_stats rx_stats;
57 struct mutex rx_stats_lock;
58 struct hif_tx_power_loop_info tx_power_loop_info;
59 struct mutex tx_power_loop_info_lock;
60 int force_ps_timeout;
61};
62
63struct wfx_vif {
64 struct wfx_dev *wdev;
65 struct ieee80211_vif *vif;
66 struct ieee80211_channel *channel;
67 int id;
68
69 u32 link_id_map;
70
71 bool after_dtim_tx_allowed;
72 bool join_in_progress;
73
74 struct delayed_work beacon_loss_work;
75
76 struct wfx_queue tx_queue[4];
77 struct tx_policy_cache tx_policy_cache;
78 struct work_struct tx_policy_upload_work;
79
80 struct work_struct update_tim_work;
81
82 unsigned long uapsd_mask;
83
84 /* avoid some operations in parallel with scan */
85 struct mutex scan_lock;
86 struct work_struct scan_work;
87 struct completion scan_complete;
88 bool scan_abort;
89 struct ieee80211_scan_request *scan_req;
90
91 struct completion set_pm_mode_complete;
92};
93
94static inline struct wfx_vif *wdev_to_wvif(struct wfx_dev *wdev, int vif_id)
95{
96 if (vif_id >= ARRAY_SIZE(wdev->vif)) {
97 dev_dbg(wdev->dev, "requesting non-existent vif: %d\n", vif_id);
98 return NULL;
99 }
100 vif_id = array_index_nospec(vif_id, ARRAY_SIZE(wdev->vif));
101 if (!wdev->vif[vif_id]) {
102 dev_dbg(wdev->dev, "requesting non-allocated vif: %d\n",
103 vif_id);
104 return NULL;
105 }
106 return (struct wfx_vif *) wdev->vif[vif_id]->drv_priv;
107}
108
109static inline struct wfx_vif *wvif_iterate(struct wfx_dev *wdev,
110 struct wfx_vif *cur)
111{
112 int i;
113 int mark = 0;
114 struct wfx_vif *tmp;
115
116 if (!cur)
117 mark = 1;
118 for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
119 tmp = wdev_to_wvif(wdev, i);
120 if (mark && tmp)
121 return tmp;
122 if (tmp == cur)
123 mark = 1;
124 }
125 return NULL;
126}
127
128static inline int wvif_count(struct wfx_dev *wdev)
129{
130 int i;
131 int ret = 0;
132 struct wfx_vif *wvif;
133
134 for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
135 wvif = wdev_to_wvif(wdev, i);
136 if (wvif)
137 ret++;
138 }
139 return ret;
140}
141
142static inline void memreverse(u8 *src, u8 length)
143{
144 u8 *lo = src;
145 u8 *hi = src + length - 1;
146 u8 swap;
147
148 while (lo < hi) {
149 swap = *lo;
150 *lo++ = *hi;
151 *hi-- = swap;
152 }
153}
154
155static inline int memzcmp(void *src, unsigned int size)
156{
157 u8 *buf = src;
158
159 if (!size)
160 return 0;
161 if (*buf)
162 return 1;
163 return memcmp(buf, buf + 1, size - 1);
164}
165
166#endif /* WFX_H */