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) 2017-2020, 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
  28 struct hwbus_ops;
  29
  30 struct 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
  63 struct 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
  94 static 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
 109 static 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
 128 static 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
 142 static 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
 155 static 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 */