Commit | Line | Data |
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3dbba8e2 AH |
1 | /* |
2 | * Broadcom B43 wireless driver | |
3 | * | |
4 | * SDIO over Sonics Silicon Backplane bus glue for b43. | |
5 | * | |
6 | * Copyright (C) 2009 Albert Herranz | |
eb032b98 | 7 | * Copyright (C) 2009 Michael Buesch <m@bues.ch> |
3dbba8e2 AH |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or (at | |
12 | * your option) any later version. | |
13 | */ | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/mmc/card.h> | |
17 | #include <linux/mmc/sdio_func.h> | |
18 | #include <linux/mmc/sdio_ids.h> | |
5a0e3ad6 | 19 | #include <linux/slab.h> |
3dbba8e2 AH |
20 | #include <linux/ssb/ssb.h> |
21 | ||
22 | #include "sdio.h" | |
23 | #include "b43.h" | |
24 | ||
25 | ||
26 | #define HNBU_CHIPID 0x01 /* vendor & device id */ | |
27 | ||
28 | #define B43_SDIO_BLOCK_SIZE 64 /* rx fifo max size in bytes */ | |
29 | ||
30 | ||
31 | static const struct b43_sdio_quirk { | |
32 | u16 vendor; | |
33 | u16 device; | |
34 | unsigned int quirks; | |
35 | } b43_sdio_quirks[] = { | |
36 | { 0x14E4, 0x4318, SSB_QUIRK_SDIO_READ_AFTER_WRITE32, }, | |
37 | { }, | |
38 | }; | |
39 | ||
40 | ||
41 | static unsigned int b43_sdio_get_quirks(u16 vendor, u16 device) | |
42 | { | |
43 | const struct b43_sdio_quirk *q; | |
44 | ||
45 | for (q = b43_sdio_quirks; q->quirks; q++) { | |
46 | if (vendor == q->vendor && device == q->device) | |
47 | return q->quirks; | |
48 | } | |
49 | ||
50 | return 0; | |
51 | } | |
52 | ||
53 | static void b43_sdio_interrupt_dispatcher(struct sdio_func *func) | |
54 | { | |
55 | struct b43_sdio *sdio = sdio_get_drvdata(func); | |
56 | struct b43_wldev *dev = sdio->irq_handler_opaque; | |
57 | ||
a8696c80 MB |
58 | if (unlikely(b43_status(dev) < B43_STAT_STARTED)) |
59 | return; | |
60 | ||
61 | sdio_release_host(func); | |
3dbba8e2 | 62 | sdio->irq_handler(dev); |
a8696c80 | 63 | sdio_claim_host(func); |
3dbba8e2 AH |
64 | } |
65 | ||
66 | int b43_sdio_request_irq(struct b43_wldev *dev, | |
67 | void (*handler)(struct b43_wldev *dev)) | |
68 | { | |
02a0fbe4 | 69 | struct ssb_bus *bus = dev->dev->sdev->bus; |
3dbba8e2 AH |
70 | struct sdio_func *func = bus->host_sdio; |
71 | struct b43_sdio *sdio = sdio_get_drvdata(func); | |
72 | int err; | |
73 | ||
74 | sdio->irq_handler_opaque = dev; | |
75 | sdio->irq_handler = handler; | |
76 | sdio_claim_host(func); | |
77 | err = sdio_claim_irq(func, b43_sdio_interrupt_dispatcher); | |
78 | sdio_release_host(func); | |
79 | ||
80 | return err; | |
81 | } | |
82 | ||
83 | void b43_sdio_free_irq(struct b43_wldev *dev) | |
84 | { | |
02a0fbe4 | 85 | struct ssb_bus *bus = dev->dev->sdev->bus; |
3dbba8e2 AH |
86 | struct sdio_func *func = bus->host_sdio; |
87 | struct b43_sdio *sdio = sdio_get_drvdata(func); | |
88 | ||
89 | sdio_claim_host(func); | |
90 | sdio_release_irq(func); | |
91 | sdio_release_host(func); | |
92 | sdio->irq_handler_opaque = NULL; | |
93 | sdio->irq_handler = NULL; | |
94 | } | |
95 | ||
cd155987 HM |
96 | static int __devinit b43_sdio_probe(struct sdio_func *func, |
97 | const struct sdio_device_id *id) | |
3dbba8e2 AH |
98 | { |
99 | struct b43_sdio *sdio; | |
100 | struct sdio_func_tuple *tuple; | |
101 | u16 vendor = 0, device = 0; | |
102 | int error; | |
103 | ||
104 | /* Look for the card chip identifier. */ | |
105 | tuple = func->tuples; | |
106 | while (tuple) { | |
107 | switch (tuple->code) { | |
108 | case 0x80: | |
109 | switch (tuple->data[0]) { | |
110 | case HNBU_CHIPID: | |
111 | if (tuple->size != 5) | |
112 | break; | |
113 | vendor = tuple->data[1] | (tuple->data[2]<<8); | |
114 | device = tuple->data[3] | (tuple->data[4]<<8); | |
115 | dev_info(&func->dev, "Chip ID %04x:%04x\n", | |
116 | vendor, device); | |
117 | break; | |
118 | default: | |
119 | break; | |
120 | } | |
121 | break; | |
122 | default: | |
123 | break; | |
124 | } | |
125 | tuple = tuple->next; | |
126 | } | |
127 | if (!vendor || !device) { | |
128 | error = -ENODEV; | |
129 | goto out; | |
130 | } | |
131 | ||
132 | sdio_claim_host(func); | |
133 | error = sdio_set_block_size(func, B43_SDIO_BLOCK_SIZE); | |
134 | if (error) { | |
135 | dev_err(&func->dev, "failed to set block size to %u bytes," | |
136 | " error %d\n", B43_SDIO_BLOCK_SIZE, error); | |
137 | goto err_release_host; | |
138 | } | |
139 | error = sdio_enable_func(func); | |
140 | if (error) { | |
141 | dev_err(&func->dev, "failed to enable func, error %d\n", error); | |
142 | goto err_release_host; | |
143 | } | |
144 | sdio_release_host(func); | |
145 | ||
146 | sdio = kzalloc(sizeof(*sdio), GFP_KERNEL); | |
147 | if (!sdio) { | |
148 | error = -ENOMEM; | |
149 | dev_err(&func->dev, "failed to allocate ssb bus\n"); | |
150 | goto err_disable_func; | |
151 | } | |
152 | error = ssb_bus_sdiobus_register(&sdio->ssb, func, | |
153 | b43_sdio_get_quirks(vendor, device)); | |
154 | if (error) { | |
155 | dev_err(&func->dev, "failed to register ssb sdio bus," | |
156 | " error %d\n", error); | |
157 | goto err_free_ssb; | |
158 | } | |
159 | sdio_set_drvdata(func, sdio); | |
160 | ||
161 | return 0; | |
162 | ||
163 | err_free_ssb: | |
164 | kfree(sdio); | |
165 | err_disable_func: | |
e476a5a4 | 166 | sdio_claim_host(func); |
3dbba8e2 AH |
167 | sdio_disable_func(func); |
168 | err_release_host: | |
169 | sdio_release_host(func); | |
170 | out: | |
171 | return error; | |
172 | } | |
173 | ||
cd155987 | 174 | static void __devexit b43_sdio_remove(struct sdio_func *func) |
3dbba8e2 AH |
175 | { |
176 | struct b43_sdio *sdio = sdio_get_drvdata(func); | |
177 | ||
178 | ssb_bus_unregister(&sdio->ssb); | |
9f2a0fac | 179 | sdio_claim_host(func); |
3dbba8e2 | 180 | sdio_disable_func(func); |
9f2a0fac | 181 | sdio_release_host(func); |
3dbba8e2 AH |
182 | kfree(sdio); |
183 | sdio_set_drvdata(func, NULL); | |
184 | } | |
185 | ||
186 | static const struct sdio_device_id b43_sdio_ids[] = { | |
187 | { SDIO_DEVICE(0x02d0, 0x044b) }, /* Nintendo Wii WLAN daughter card */ | |
55d02a47 | 188 | { SDIO_DEVICE(0x0092, 0x0004) }, /* C-guys, Inc. EW-CG1102GC */ |
3dbba8e2 AH |
189 | { }, |
190 | }; | |
191 | ||
192 | static struct sdio_driver b43_sdio_driver = { | |
193 | .name = "b43-sdio", | |
194 | .id_table = b43_sdio_ids, | |
195 | .probe = b43_sdio_probe, | |
196 | .remove = b43_sdio_remove, | |
197 | }; | |
198 | ||
199 | int b43_sdio_init(void) | |
200 | { | |
201 | return sdio_register_driver(&b43_sdio_driver); | |
202 | } | |
203 | ||
204 | void b43_sdio_exit(void) | |
205 | { | |
206 | sdio_unregister_driver(&b43_sdio_driver); | |
207 | } |