cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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wfx.h (4020B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Common private data.
      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 wfx_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 wfx_hwbus_ops *hwbus_ops;
     37	void                       *hwbus_priv;
     38
     39	u8                         keyset;
     40	struct completion          firmware_ready;
     41	struct wfx_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 wfx_hif_rx_stats    rx_stats;
     57	struct mutex               rx_stats_lock;
     58	struct wfx_hif_tx_power_loop_info tx_power_loop_info;
     59	struct mutex               tx_power_loop_info_lock;
     60	struct workqueue_struct    *bh_wq;
     61};
     62
     63struct wfx_vif {
     64	struct wfx_dev             *wdev;
     65	struct ieee80211_channel   *channel;
     66	int                        id;
     67
     68	u32                        link_id_map;
     69
     70	bool                       after_dtim_tx_allowed;
     71	bool                       join_in_progress;
     72
     73	struct delayed_work        beacon_loss_work;
     74
     75	struct wfx_queue           tx_queue[4];
     76	struct wfx_tx_policy_cache tx_policy_cache;
     77	struct work_struct         tx_policy_upload_work;
     78
     79	struct work_struct         update_tim_work;
     80
     81	unsigned long              uapsd_mask;
     82
     83	/* avoid some operations in parallel with scan */
     84	struct mutex               scan_lock;
     85	struct work_struct         scan_work;
     86	struct completion          scan_complete;
     87	int                        scan_nb_chan_done;
     88	bool                       scan_abort;
     89	struct ieee80211_scan_request *scan_req;
     90
     91	struct completion          set_pm_mode_complete;
     92};
     93
     94static inline struct ieee80211_vif *wvif_to_vif(struct wfx_vif *wvif)
     95{
     96	return container_of((void *)wvif, struct ieee80211_vif, drv_priv);
     97}
     98
     99static inline struct wfx_vif *wdev_to_wvif(struct wfx_dev *wdev, int vif_id)
    100{
    101	if (vif_id >= ARRAY_SIZE(wdev->vif)) {
    102		dev_dbg(wdev->dev, "requesting non-existent vif: %d\n", vif_id);
    103		return NULL;
    104	}
    105	vif_id = array_index_nospec(vif_id, ARRAY_SIZE(wdev->vif));
    106	if (!wdev->vif[vif_id])
    107		return NULL;
    108	return (struct wfx_vif *)wdev->vif[vif_id]->drv_priv;
    109}
    110
    111static inline struct wfx_vif *wvif_iterate(struct wfx_dev *wdev, struct wfx_vif *cur)
    112{
    113	int i;
    114	int mark = 0;
    115	struct wfx_vif *tmp;
    116
    117	if (!cur)
    118		mark = 1;
    119	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
    120		tmp = wdev_to_wvif(wdev, i);
    121		if (mark && tmp)
    122			return tmp;
    123		if (tmp == cur)
    124			mark = 1;
    125	}
    126	return NULL;
    127}
    128
    129static inline int wvif_count(struct wfx_dev *wdev)
    130{
    131	int i;
    132	int ret = 0;
    133	struct wfx_vif *wvif;
    134
    135	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
    136		wvif = wdev_to_wvif(wdev, i);
    137		if (wvif)
    138			ret++;
    139	}
    140	return ret;
    141}
    142
    143static inline void memreverse(u8 *src, u8 length)
    144{
    145	u8 *lo = src;
    146	u8 *hi = src + length - 1;
    147	u8 swap;
    148
    149	while (lo < hi) {
    150		swap = *lo;
    151		*lo++ = *hi;
    152		*hi-- = swap;
    153	}
    154}
    155
    156static inline int memzcmp(void *src, unsigned int size)
    157{
    158	u8 *buf = src;
    159
    160	if (!size)
    161		return 0;
    162	if (*buf)
    163		return 1;
    164	return memcmp(buf, buf + 1, size - 1);
    165}
    166
    167#endif