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
|
/*
* Broadcom B43 wireless driver
*
* SDIO over Sonics Silicon Backplane bus glue for b43.
*
* Copyright (C) 2009 Albert Herranz
* Copyright (C) 2009 Michael Buesch <mb@bu3sch.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/mmc/card.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/slab.h>
#include <linux/ssb/ssb.h>
#include "sdio.h"
#include "b43.h"
#define HNBU_CHIPID 0x01 /* vendor & device id */
#define B43_SDIO_BLOCK_SIZE 64 /* rx fifo max size in bytes */
static const struct b43_sdio_quirk {
u16 vendor;
u16 device;
unsigned int quirks;
} b43_sdio_quirks[] = {
{ 0x14E4, 0x4318, SSB_QUIRK_SDIO_READ_AFTER_WRITE32, },
{ },
};
static unsigned int b43_sdio_get_quirks(u16 vendor, u16 device)
{
const struct b43_sdio_quirk *q;
for (q = b43_sdio_quirks; q->quirks; q++) {
if (vendor == q->vendor && device == q->device)
return q->quirks;
}
return 0;
}
static void b43_sdio_interrupt_dispatcher(struct sdio_func *func)
{
struct b43_sdio *sdio = sdio_get_drvdata(func);
struct b43_wldev *dev = sdio->irq_handler_opaque;
if (unlikely(b43_status(dev) < B43_STAT_STARTED))
return;
sdio_release_host(func);
sdio->irq_handler(dev);
sdio_claim_host(func);
}
int b43_sdio_request_irq(struct b43_wldev *dev,
void (*handler)(struct b43_wldev *dev))
{
struct ssb_bus *bus = dev->dev->bus;
struct sdio_func *func = bus->host_sdio;
struct b43_sdio *sdio = sdio_get_drvdata(func);
int err;
sdio->irq_handler_opaque = dev;
sdio->irq_handler = handler;
sdio_claim_host(func);
err = sdio_claim_irq(func, b43_sdio_interrupt_dispatcher);
sdio_release_host(func);
return err;
}
void b43_sdio_free_irq(struct b43_wldev *dev)
{
struct ssb_bus *bus = dev->dev->bus;
struct sdio_func *func = bus->host_sdio;
struct b43_sdio *sdio = sdio_get_drvdata(func);
sdio_claim_host(func);
sdio_release_irq(func);
sdio_release_host(func);
sdio->irq_handler_opaque = NULL;
sdio->irq_handler = NULL;
}
static int b43_sdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
struct b43_sdio *sdio;
struct sdio_func_tuple *tuple;
u16 vendor = 0, device = 0;
int error;
/* Look for the card chip identifier. */
tuple = func->tuples;
while (tuple) {
switch (tuple->code) {
case 0x80:
switch (tuple->data[0]) {
case HNBU_CHIPID:
if (tuple->size != 5)
break;
vendor = tuple->data[1] | (tuple->data[2]<<8);
device = tuple->data[3] | (tuple->data[4]<<8);
dev_info(&func->dev, "Chip ID %04x:%04x\n",
vendor, device);
break;
default:
break;
}
break;
default:
break;
}
tuple = tuple->next;
}
if (!vendor || !device) {
error = -ENODEV;
goto out;
}
sdio_claim_host(func);
error = sdio_set_block_size(func, B43_SDIO_BLOCK_SIZE);
if (error) {
dev_err(&func->dev, "failed to set block size to %u bytes,"
" error %d\n", B43_SDIO_BLOCK_SIZE, error);
goto err_release_host;
}
error = sdio_enable_func(func);
if (error) {
dev_err(&func->dev, "failed to enable func, error %d\n", error);
goto err_release_host;
}
sdio_release_host(func);
sdio = kzalloc(sizeof(*sdio), GFP_KERNEL);
if (!sdio) {
error = -ENOMEM;
dev_err(&func->dev, "failed to allocate ssb bus\n");
goto err_disable_func;
}
error = ssb_bus_sdiobus_register(&sdio->ssb, func,
b43_sdio_get_quirks(vendor, device));
if (error) {
dev_err(&func->dev, "failed to register ssb sdio bus,"
" error %d\n", error);
goto err_free_ssb;
}
sdio_set_drvdata(func, sdio);
return 0;
err_free_ssb:
kfree(sdio);
err_disable_func:
sdio_disable_func(func);
err_release_host:
sdio_release_host(func);
out:
return error;
}
static void b43_sdio_remove(struct sdio_func *func)
{
struct b43_sdio *sdio = sdio_get_drvdata(func);
ssb_bus_unregister(&sdio->ssb);
sdio_claim_host(func);
sdio_disable_func(func);
sdio_release_host(func);
kfree(sdio);
sdio_set_drvdata(func, NULL);
}
static const struct sdio_device_id b43_sdio_ids[] = {
{ SDIO_DEVICE(0x02d0, 0x044b) }, /* Nintendo Wii WLAN daughter card */
{ SDIO_DEVICE(0x0092, 0x0004) }, /* C-guys, Inc. EW-CG1102GC */
{ },
};
static struct sdio_driver b43_sdio_driver = {
.name = "b43-sdio",
.id_table = b43_sdio_ids,
.probe = b43_sdio_probe,
.remove = b43_sdio_remove,
};
int b43_sdio_init(void)
{
return sdio_register_driver(&b43_sdio_driver);
}
void b43_sdio_exit(void)
{
sdio_unregister_driver(&b43_sdio_driver);
}
|
