cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

bus.h (3714B)


      1/* SPDX-License-Identifier: GPL-2.0+ */
      2/* Copyright (c) 2015 Quantenna Communications. All rights reserved. */
      3
      4#ifndef QTNFMAC_BUS_H
      5#define QTNFMAC_BUS_H
      6
      7#include <linux/netdevice.h>
      8#include <linux/workqueue.h>
      9
     10#include "trans.h"
     11#include "core.h"
     12
     13#define QTNF_MAX_MAC		3
     14
     15#define HBM_FRAME_META_MAGIC_PATTERN_S	0xAB
     16#define HBM_FRAME_META_MAGIC_PATTERN_E	0xBA
     17
     18struct qtnf_frame_meta_info {
     19	u8 magic_s;
     20	u8 ifidx;
     21	u8 macid;
     22	u8 magic_e;
     23} __packed;
     24
     25enum qtnf_fw_state {
     26	QTNF_FW_STATE_DETACHED,
     27	QTNF_FW_STATE_BOOT_DONE,
     28	QTNF_FW_STATE_ACTIVE,
     29	QTNF_FW_STATE_RUNNING,
     30	QTNF_FW_STATE_DEAD,
     31};
     32
     33struct qtnf_bus;
     34
     35struct qtnf_bus_ops {
     36	/* mgmt methods */
     37	int (*preinit)(struct qtnf_bus *);
     38	void (*stop)(struct qtnf_bus *);
     39
     40	/* control path methods */
     41	int (*control_tx)(struct qtnf_bus *, struct sk_buff *);
     42
     43	/* data xfer methods */
     44	int (*data_tx)(struct qtnf_bus *bus, struct sk_buff *skb,
     45		       unsigned int macid, unsigned int vifid);
     46	void (*data_tx_timeout)(struct qtnf_bus *, struct net_device *);
     47	void (*data_tx_use_meta_set)(struct qtnf_bus *bus, bool use_meta);
     48	void (*data_rx_start)(struct qtnf_bus *);
     49	void (*data_rx_stop)(struct qtnf_bus *);
     50};
     51
     52struct qtnf_bus {
     53	struct device *dev;
     54	enum qtnf_fw_state fw_state;
     55	u32 chip;
     56	u32 chiprev;
     57	struct qtnf_bus_ops *bus_ops;
     58	struct qtnf_wmac *mac[QTNF_MAX_MAC];
     59	struct qtnf_qlink_transport trans;
     60	struct qtnf_hw_info hw_info;
     61	struct napi_struct mux_napi;
     62	struct net_device mux_dev;
     63	struct workqueue_struct *workqueue;
     64	struct workqueue_struct *hprio_workqueue;
     65	struct work_struct fw_work;
     66	struct work_struct event_work;
     67	struct mutex bus_lock; /* lock during command/event processing */
     68	struct dentry *dbg_dir;
     69	struct notifier_block netdev_nb;
     70	u8 hw_id[ETH_ALEN];
     71	/* bus private data */
     72	char bus_priv[] __aligned(sizeof(void *));
     73};
     74
     75static inline bool qtnf_fw_is_up(struct qtnf_bus *bus)
     76{
     77	enum qtnf_fw_state state = bus->fw_state;
     78
     79	return ((state == QTNF_FW_STATE_ACTIVE) ||
     80		(state == QTNF_FW_STATE_RUNNING));
     81}
     82
     83static inline bool qtnf_fw_is_attached(struct qtnf_bus *bus)
     84{
     85	enum qtnf_fw_state state = bus->fw_state;
     86
     87	return ((state == QTNF_FW_STATE_ACTIVE) ||
     88		(state == QTNF_FW_STATE_RUNNING) ||
     89		(state == QTNF_FW_STATE_DEAD));
     90}
     91
     92static inline void *get_bus_priv(struct qtnf_bus *bus)
     93{
     94	if (WARN(!bus, "qtnfmac: invalid bus pointer"))
     95		return NULL;
     96
     97	return &bus->bus_priv;
     98}
     99
    100/* callback wrappers */
    101
    102static inline int qtnf_bus_preinit(struct qtnf_bus *bus)
    103{
    104	if (!bus->bus_ops->preinit)
    105		return 0;
    106	return bus->bus_ops->preinit(bus);
    107}
    108
    109static inline void qtnf_bus_stop(struct qtnf_bus *bus)
    110{
    111	if (!bus->bus_ops->stop)
    112		return;
    113	bus->bus_ops->stop(bus);
    114}
    115
    116static inline int qtnf_bus_data_tx(struct qtnf_bus *bus, struct sk_buff *skb,
    117				   unsigned int macid, unsigned int vifid)
    118{
    119	return bus->bus_ops->data_tx(bus, skb, macid, vifid);
    120}
    121
    122static inline void
    123qtnf_bus_data_tx_timeout(struct qtnf_bus *bus, struct net_device *ndev)
    124{
    125	return bus->bus_ops->data_tx_timeout(bus, ndev);
    126}
    127
    128static inline int qtnf_bus_control_tx(struct qtnf_bus *bus, struct sk_buff *skb)
    129{
    130	return bus->bus_ops->control_tx(bus, skb);
    131}
    132
    133static inline void qtnf_bus_data_rx_start(struct qtnf_bus *bus)
    134{
    135	return bus->bus_ops->data_rx_start(bus);
    136}
    137
    138static inline void qtnf_bus_data_rx_stop(struct qtnf_bus *bus)
    139{
    140	return bus->bus_ops->data_rx_stop(bus);
    141}
    142
    143static __always_inline void qtnf_bus_lock(struct qtnf_bus *bus)
    144{
    145	mutex_lock(&bus->bus_lock);
    146}
    147
    148static __always_inline void qtnf_bus_unlock(struct qtnf_bus *bus)
    149{
    150	mutex_unlock(&bus->bus_lock);
    151}
    152
    153/* interface functions from common layer */
    154
    155int qtnf_core_attach(struct qtnf_bus *bus);
    156void qtnf_core_detach(struct qtnf_bus *bus);
    157
    158#endif /* QTNFMAC_BUS_H */