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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
/*
* 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 BRCMFMAC_BUS_H
#define BRCMFMAC_BUS_H
#include "debug.h"
/* IDs of the 6 default common rings of msgbuf protocol */
#define BRCMF_H2D_MSGRING_CONTROL_SUBMIT 0
#define BRCMF_H2D_MSGRING_RXPOST_SUBMIT 1
#define BRCMF_H2D_MSGRING_FLOWRING_IDSTART 2
#define BRCMF_D2H_MSGRING_CONTROL_COMPLETE 2
#define BRCMF_D2H_MSGRING_TX_COMPLETE 3
#define BRCMF_D2H_MSGRING_RX_COMPLETE 4
#define BRCMF_NROF_H2D_COMMON_MSGRINGS 2
#define BRCMF_NROF_D2H_COMMON_MSGRINGS 3
#define BRCMF_NROF_COMMON_MSGRINGS (BRCMF_NROF_H2D_COMMON_MSGRINGS + \
BRCMF_NROF_D2H_COMMON_MSGRINGS)
/* The level of bus communication with the dongle */
enum brcmf_bus_state {
BRCMF_BUS_DOWN, /* Not ready for frame transfers */
BRCMF_BUS_UP /* Ready for frame transfers */
};
/* The level of bus communication with the dongle */
enum brcmf_bus_protocol_type {
BRCMF_PROTO_BCDC,
BRCMF_PROTO_MSGBUF
};
struct brcmf_mp_device;
struct brcmf_bus_dcmd {
char *name;
char *param;
int param_len;
struct list_head list;
};
/**
* struct brcmf_bus_ops - bus callback operations.
*
* @preinit: execute bus/device specific dongle init commands (optional).
* @init: prepare for communication with dongle.
* @stop: clear pending frames, disable data flow.
* @txdata: send a data frame to the dongle. When the data
* has been transferred, the common driver must be
* notified using brcmf_txcomplete(). The common
* driver calls this function with interrupts
* disabled.
* @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).
* @wowl_config: specify if dongle is configured for wowl when going to suspend
* @get_ramsize: obtain size of device memory.
* @get_memdump: obtain device memory dump in provided buffer.
* @get_fwname: obtain firmware name.
*
* 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 (*preinit)(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);
void (*wowl_config)(struct device *dev, bool enabled);
size_t (*get_ramsize)(struct device *dev);
int (*get_memdump)(struct device *dev, void *data, size_t len);
int (*get_fwname)(struct device *dev, const char *ext,
unsigned char *fw_name);
};
/**
* struct brcmf_bus_msgbuf - bus ringbuf if in case of msgbuf.
*
* @commonrings: commonrings which are always there.
* @flowrings: commonrings which are dynamically created and destroyed for data.
* @rx_dataoffset: if set then all rx data has this this offset.
* @max_rxbufpost: maximum number of buffers to post for rx.
* @max_flowrings: maximum number of tx flow rings supported.
* @max_submissionrings: maximum number of submission rings(h2d) supported.
* @max_completionrings: maximum number of completion rings(d2h) supported.
*/
struct brcmf_bus_msgbuf {
struct brcmf_commonring *commonrings[BRCMF_NROF_COMMON_MSGRINGS];
struct brcmf_commonring **flowrings;
u32 rx_dataoffset;
u32 max_rxbufpost;
u16 max_flowrings;
u16 max_submissionrings;
u16 max_completionrings;
};
/**
* struct brcmf_bus_stats - bus statistic counters.
*
* @pktcowed: packets cowed for extra headroom/unorphan.
* @pktcow_failed: packets dropped due to failed cow-ing.
*/
struct brcmf_bus_stats {
atomic_t pktcowed;
atomic_t pktcow_failed;
};
/**
* struct brcmf_bus - interface structure between common and bus layer
*
* @bus_priv: pointer to private bus device.
* @proto_type: protocol type, bcdc or msgbuf
* @dev: device pointer of bus device.
* @drvr: public driver information.
* @state: operational state of the bus interface.
* @stats: statistics shared between common and bus layer.
* @maxctl: maximum size for rxctl request message.
* @chip: device identifier of the dongle chip.
* @always_use_fws_queue: bus wants use queue also when fwsignal is inactive.
* @wowl_supported: is wowl supported by bus driver.
* @chiprev: revision of the dongle chip.
* @msgbuf: msgbuf protocol parameters provided by bus layer.
*/
struct brcmf_bus {
union {
struct brcmf_sdio_dev *sdio;
struct brcmf_usbdev *usb;
struct brcmf_pciedev *pcie;
} bus_priv;
enum brcmf_bus_protocol_type proto_type;
struct device *dev;
struct brcmf_pub *drvr;
enum brcmf_bus_state state;
struct brcmf_bus_stats stats;
uint maxctl;
u32 chip;
u32 chiprev;
bool always_use_fws_queue;
bool wowl_supported;
const struct brcmf_bus_ops *ops;
struct brcmf_bus_msgbuf *msgbuf;
};
/*
* callback wrappers
*/
static inline int brcmf_bus_preinit(struct brcmf_bus *bus)
{
if (!bus->ops->preinit)
return 0;
return bus->ops->preinit(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);
}
static inline
void brcmf_bus_wowl_config(struct brcmf_bus *bus, bool enabled)
{
if (bus->ops->wowl_config)
bus->ops->wowl_config(bus->dev, enabled);
}
static inline size_t brcmf_bus_get_ramsize(struct brcmf_bus *bus)
{
if (!bus->ops->get_ramsize)
return 0;
return bus->ops->get_ramsize(bus->dev);
}
static inline
int brcmf_bus_get_memdump(struct brcmf_bus *bus, void *data, size_t len)
{
if (!bus->ops->get_memdump)
return -EOPNOTSUPP;
return bus->ops->get_memdump(bus->dev, data, len);
}
static inline
int brcmf_bus_get_fwname(struct brcmf_bus *bus, const char *ext,
unsigned char *fw_name)
{
return bus->ops->get_fwname(bus->dev, ext, fw_name);
}
/*
* interface functions from common layer
*/
/* Receive frame for delivery to OS. Callee disposes of rxp. */
void brcmf_rx_frame(struct device *dev, struct sk_buff *rxp, bool handle_event);
/* Receive async event packet from firmware. Callee disposes of rxp. */
void brcmf_rx_event(struct device *dev, struct sk_buff *rxp);
/* Indication from bus module regarding presence/insertion of dongle. */
int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings);
/* Indication from bus module regarding removal/absence of dongle */
void brcmf_detach(struct device *dev);
/* Indication from bus module that dongle should be reset */
void brcmf_dev_reset(struct device *dev);
/* Request from bus module to initiate a coredump */
void brcmf_dev_coredump(struct device *dev);
/* Configure the "global" bus state used by upper layers */
void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state);
s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len);
void brcmf_bus_add_txhdrlen(struct device *dev, uint len);
#ifdef CONFIG_BRCMFMAC_SDIO
void brcmf_sdio_exit(void);
void brcmf_sdio_register(void);
#endif
#ifdef CONFIG_BRCMFMAC_USB
void brcmf_usb_exit(void);
void brcmf_usb_register(void);
#endif
#endif /* BRCMFMAC_BUS_H */
|
