summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h
blob: 080395f49fa5922400419d821e1fda4fcc1b460e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _BRCMF_BUS_H_
#define _BRCMF_BUS_H_

/* The level of bus communication with the dongle */
enum brcmf_bus_state {
	BRCMF_BUS_DOWN,		/* Not ready for frame transfers */
	BRCMF_BUS_LOAD,		/* Download access only (CPU reset) */
	BRCMF_BUS_DATA		/* Ready for frame transfers */
};

struct brcmf_bus_dcmd {
	char *name;
	char *param;
	int param_len;
	struct list_head list;
};

/**
 * struct brcmf_bus_ops - bus callback operations.
 *
 * @init: prepare for communication with dongle.
 * @stop: clear pending frames, disable data flow.
 * @txdata: send a data frame to the dongle (callee disposes skb).
 * @txctl: transmit a control request message to dongle.
 * @rxctl: receive a control response message from dongle.
 * @gettxq: obtain a reference of bus transmit queue (optional).
 *
 * This structure provides an abstract interface towards the
 * bus specific driver. For control messages to common driver
 * will assure there is only one active transaction. Unless
 * indicated otherwise these callbacks are mandatory.
 */
struct brcmf_bus_ops {
	int (*init)(struct device *dev);
	void (*stop)(struct device *dev);
	int (*txdata)(struct device *dev, struct sk_buff *skb);
	int (*txctl)(struct device *dev, unsigned char *msg, uint len);
	int (*rxctl)(struct device *dev, unsigned char *msg, uint len);
	struct pktq * (*gettxq)(struct device *dev);
};

/**
 * struct brcmf_bus - interface structure between common and bus layer
 *
 * @bus_priv: pointer to private bus device.
 * @dev: device pointer of bus device.
 * @drvr: public driver information.
 * @state: operational state of the bus interface.
 * @maxctl: maximum size for rxctl request message.
 * @tx_realloc: number of tx packets realloced for headroom.
 * @dstats: dongle-based statistical data.
 * @align: alignment requirement for the bus.
 * @dcmd_list: bus/device specific dongle initialization commands.
 * @chip: device identifier of the dongle chip.
 * @chiprev: revision of the dongle chip.
 */
struct brcmf_bus {
	union {
		struct brcmf_sdio_dev *sdio;
		struct brcmf_usbdev *usb;
	} bus_priv;
	struct device *dev;
	struct brcmf_pub *drvr;
	enum brcmf_bus_state state;
	uint maxctl;
	unsigned long tx_realloc;
	u8 align;
	u32 chip;
	u32 chiprev;
	struct list_head dcmd_list;

	struct brcmf_bus_ops *ops;
};

/*
 * callback wrappers
 */
static inline int brcmf_bus_init(struct brcmf_bus *bus)
{
	return bus->ops->init(bus->dev);
}

static inline void brcmf_bus_stop(struct brcmf_bus *bus)
{
	bus->ops->stop(bus->dev);
}

static inline int brcmf_bus_txdata(struct brcmf_bus *bus, struct sk_buff *skb)
{
	return bus->ops->txdata(bus->dev, skb);
}

static inline
int brcmf_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint len)
{
	return bus->ops->txctl(bus->dev, msg, len);
}

static inline
int brcmf_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint len)
{
	return bus->ops->rxctl(bus->dev, msg, len);
}

static inline
struct pktq *brcmf_bus_gettxq(struct brcmf_bus *bus)
{
	if (!bus->ops->gettxq)
		return ERR_PTR(-ENOENT);

	return bus->ops->gettxq(bus->dev);
}
/*
 * interface functions from common layer
 */

extern bool brcmf_c_prec_enq(struct device *dev, struct pktq *q,
			 struct sk_buff *pkt, int prec);

/* Receive frame for delivery to OS.  Callee disposes of rxp. */
extern void brcmf_rx_frames(struct device *dev, struct sk_buff_head *rxlist);

/* Indication from bus module regarding presence/insertion of dongle. */
extern int brcmf_attach(uint bus_hdrlen, struct device *dev);
/* Indication from bus module regarding removal/absence of dongle */
extern void brcmf_detach(struct device *dev);
/* Indication from bus module that dongle should be reset */
extern void brcmf_dev_reset(struct device *dev);
/* Indication from bus module to change flow-control state */
extern void brcmf_txflowblock(struct device *dev, bool state);

/* Notify the bus has transferred the tx packet to firmware */
extern void brcmf_txcomplete(struct device *dev, struct sk_buff *txp,
			     bool success);

extern int brcmf_bus_start(struct device *dev);

#ifdef CONFIG_BRCMFMAC_SDIO
extern void brcmf_sdio_exit(void);
extern void brcmf_sdio_init(void);
#endif
#ifdef CONFIG_BRCMFMAC_USB
extern void brcmf_usb_exit(void);
extern void brcmf_usb_init(void);
#endif

#endif				/* _BRCMF_BUS_H_ */