drivers/staging/wfx/wfx.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Common private data for Silicon Labs WFx chips.
   4  *
   5  * Copyright (c) 2017-2019, 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 "secure_link.h"
  24 #include "sta.h"
  25 #include "scan.h"
  26 #include "hif_tx.h"
  27 #include "hif_api_general.h"
  28
  29 #define USEC_PER_TXOP 32 // see struct ieee80211_tx_queue_params
  30 #define USEC_PER_TU 1024
  31
  32 struct hwbus_ops;
  33
  34 struct wfx_dev {
  35         struct wfx_platform_data pdata;
  36         struct device           *dev;
  37         struct ieee80211_hw     *hw;
  38         struct ieee80211_vif    *vif[2];
  39         struct mac_address      addresses[2];
  40         const struct hwbus_ops  *hwbus_ops;
  41         void                    *hwbus_priv;
  42
  43         u8                      keyset;
  44         struct completion       firmware_ready;
  45         struct hif_ind_startup  hw_caps;
  46         struct wfx_hif          hif;
  47         struct sl_context       sl;
  48         int                     chip_frozen;
  49         struct mutex            conf_mutex;
  50
  51         struct wfx_hif_cmd      hif_cmd;
  52         struct wfx_queue        tx_queue[4];
  53         struct wfx_queue_stats  tx_queue_stats;
  54         int                     tx_burst_idx;
  55         atomic_t                tx_lock;
  56
  57         atomic_t                packet_id;
  58         u32                     key_map;
  59         struct hif_req_add_key  keys[MAX_KEY_ENTRIES];
  60
  61         struct hif_rx_stats     rx_stats;
  62         struct mutex            rx_stats_lock;
  63 };
  64
  65 struct wfx_vif {
  66         struct wfx_dev          *wdev;
  67         struct ieee80211_vif    *vif;
  68         struct ieee80211_channel *channel;
  69         int                     id;
  70         enum wfx_state          state;
  71
  72         int                     bss_loss_state;
  73         u32                     bss_loss_confirm_id;
  74         struct mutex            bss_loss_lock;
  75         struct delayed_work     bss_loss_work;
  76
  77         u32                     link_id_map;
  78
  79         bool                    after_dtim_tx_allowed;
  80         struct wfx_grp_addr_table mcast_filter;
  81
  82         s8                      wep_default_key_id;
  83         struct sk_buff          *wep_pending_skb;
  84         struct work_struct      wep_key_work;
  85
  86         struct tx_policy_cache  tx_policy_cache;
  87         struct work_struct      tx_policy_upload_work;
  88
  89         u32                     sta_asleep_mask;
  90         spinlock_t              ps_state_lock;
  91         struct work_struct      update_tim_work;
  92
  93         int                     beacon_int;
  94         bool                    filter_bssid;
  95         bool                    fwd_probe_req;
  96         bool                    disable_beacon_filter;
  97         struct work_struct      update_filtering_work;
  98
  99         unsigned long           uapsd_mask;
 100         struct ieee80211_tx_queue_params edca_params[IEEE80211_NUM_ACS];
 101         struct hif_req_set_bss_params bss_params;
 102         struct work_struct      bss_params_work;
 103
 104         int                     join_complete_status;
 105         struct work_struct      unjoin_work;
 106
 107         /* avoid some operations in parallel with scan */
 108         struct mutex            scan_lock;
 109         struct work_struct      scan_work;
 110         struct completion       scan_complete;
 111         bool                    scan_abort;
 112         struct ieee80211_scan_request *scan_req;
 113
 114         struct completion       set_pm_mode_complete;
 115
 116         struct list_head        event_queue;
 117         spinlock_t              event_queue_lock;
 118         struct work_struct      event_handler_work;
 119 };
 120
 121 static inline struct wfx_vif *wdev_to_wvif(struct wfx_dev *wdev, int vif_id)
 122 {
 123         if (vif_id >= ARRAY_SIZE(wdev->vif)) {
 124                 dev_dbg(wdev->dev, "requesting non-existent vif: %d\n", vif_id);
 125                 return NULL;
 126         }
 127         vif_id = array_index_nospec(vif_id, ARRAY_SIZE(wdev->vif));
 128         if (!wdev->vif[vif_id]) {
 129                 dev_dbg(wdev->dev, "requesting non-allocated vif: %d\n",
 130                         vif_id);
 131                 return NULL;
 132         }
 133         return (struct wfx_vif *) wdev->vif[vif_id]->drv_priv;
 134 }
 135
 136 static inline struct wfx_vif *wvif_iterate(struct wfx_dev *wdev,
 137                                            struct wfx_vif *cur)
 138 {
 139         int i;
 140         int mark = 0;
 141         struct wfx_vif *tmp;
 142
 143         if (!cur)
 144                 mark = 1;
 145         for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
 146                 tmp = wdev_to_wvif(wdev, i);
 147                 if (mark && tmp)
 148                         return tmp;
 149                 if (tmp == cur)
 150                         mark = 1;
 151         }
 152         return NULL;
 153 }
 154
 155 static inline int wvif_count(struct wfx_dev *wdev)
 156 {
 157         int i;
 158         int ret = 0;
 159         struct wfx_vif *wvif;
 160
 161         for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
 162                 wvif = wdev_to_wvif(wdev, i);
 163                 if (wvif)
 164                         ret++;
 165         }
 166         return ret;
 167 }
 168
 169 static inline void memreverse(u8 *src, u8 length)
 170 {
 171         u8 *lo = src;
 172         u8 *hi = src + length - 1;
 173         u8 swap;
 174
 175         while (lo < hi) {
 176                 swap = *lo;
 177                 *lo++ = *hi;
 178                 *hi-- = swap;
 179         }
 180 }
 181
 182 static inline int memzcmp(void *src, unsigned int size)
 183 {
 184         u8 *buf = src;
 185
 186         if (!size)
 187                 return 0;
 188         if (*buf)
 189                 return 1;
 190         return memcmp(buf, buf + 1, size - 1);
 191 }
 192
 193 #endif /* WFX_H */