summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/orinoco/orinoco_nortel.c
blob: 326396b313a6939c697aa2d8eac59f58119dab6a (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
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
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
/* orinoco_nortel.c
 *
 * Driver for Prism II devices which would usually be driven by orinoco_cs,
 * but are connected to the PCI bus by a PCI-to-PCMCIA adapter used in
 * Nortel emobility, Symbol LA-4113 and Symbol LA-4123.
 *
 * Copyright (C) 2002 Tobias Hoffmann
 *           (C) 2003 Christoph Jungegger <disdos@traum404.de>
 *
 * Some of this code is borrowed from orinoco_plx.c
 *	Copyright (C) 2001 Daniel Barlow
 * Some of this code is borrowed from orinoco_pci.c
 *  Copyright (C) 2001 Jean Tourrilhes
 * Some of this code is "inspired" by linux-wlan-ng-0.1.10, but nothing
 * has been copied from it. linux-wlan-ng-0.1.10 is originally :
 *	Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License
 * at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and
 * limitations under the License.
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License version 2 (the "GPL"), in
 * which case the provisions of the GPL are applicable instead of the
 * above.  If you wish to allow the use of your version of this file
 * only under the terms of the GPL and not to allow others to use your
 * version of this file under the MPL, indicate your decision by
 * deleting the provisions above and replace them with the notice and
 * other provisions required by the GPL.  If you do not delete the
 * provisions above, a recipient may use your version of this file
 * under either the MPL or the GPL.
 */

#define DRIVER_NAME "orinoco_nortel"
#define PFX DRIVER_NAME ": "

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <pcmcia/cisreg.h>

#include "orinoco.h"
#include "orinoco_pci.h"

#define COR_OFFSET    (0xe0)	/* COR attribute offset of Prism2 PC card */
#define COR_VALUE     (COR_LEVEL_REQ | COR_FUNC_ENA)	/* Enable PC card with interrupt in level trigger */


/*
 * Do a soft reset of the card using the Configuration Option Register
 * We need this to get going...
 * This is the part of the code that is strongly inspired from wlan-ng
 *
 * Note bis : Don't try to access HERMES_CMD during the reset phase.
 * It just won't work !
 */
static int orinoco_nortel_cor_reset(struct orinoco_private *priv)
{
	struct orinoco_pci_card *card = priv->card;

	/* Assert the reset until the card notices */
	iowrite16(8, card->bridge_io + 2);
	ioread16(card->attr_io + COR_OFFSET);
	iowrite16(0x80, card->attr_io + COR_OFFSET);
	mdelay(1);

	/* Give time for the card to recover from this hard effort */
	iowrite16(0, card->attr_io + COR_OFFSET);
	iowrite16(0, card->attr_io + COR_OFFSET);
	mdelay(1);

	/* Set COR as usual */
	iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
	iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
	mdelay(1);

	iowrite16(0x228, card->bridge_io + 2);

	return 0;
}

static int orinoco_nortel_hw_init(struct orinoco_pci_card *card)
{
	int i;
	u32 reg;

	/* Setup bridge */
	if (ioread16(card->bridge_io) & 1) {
		printk(KERN_ERR PFX "brg1 answer1 wrong\n");
		return -EBUSY;
	}
	iowrite16(0x118, card->bridge_io + 2);
	iowrite16(0x108, card->bridge_io + 2);
	mdelay(30);
	iowrite16(0x8, card->bridge_io + 2);
	for (i = 0; i < 30; i++) {
		mdelay(30);
		if (ioread16(card->bridge_io) & 0x10)
			break;
	}
	if (i == 30) {
		printk(KERN_ERR PFX "brg1 timed out\n");
		return -EBUSY;
	}
	if (ioread16(card->attr_io + COR_OFFSET) & 1) {
		printk(KERN_ERR PFX "brg2 answer1 wrong\n");
		return -EBUSY;
	}
	if (ioread16(card->attr_io + COR_OFFSET + 2) & 1) {
		printk(KERN_ERR PFX "brg2 answer2 wrong\n");
		return -EBUSY;
	}
	if (ioread16(card->attr_io + COR_OFFSET + 4) & 1) {
		printk(KERN_ERR PFX "brg2 answer3 wrong\n");
		return -EBUSY;
	}

	/* Set the PCMCIA COR register */
	iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
	mdelay(1);
	reg = ioread16(card->attr_io + COR_OFFSET);
	if (reg != COR_VALUE) {
		printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n",
		       reg);
		return -EBUSY;
	}

	/* Set LEDs */
	iowrite16(1, card->bridge_io + 10);
	return 0;
}

static int orinoco_nortel_init_one(struct pci_dev *pdev,
				   const struct pci_device_id *ent)
{
	int err;
	struct orinoco_private *priv;
	struct orinoco_pci_card *card;
	void __iomem *hermes_io, *bridge_io, *attr_io;

	err = pci_enable_device(pdev);
	if (err) {
		printk(KERN_ERR PFX "Cannot enable PCI device\n");
		return err;
	}

	err = pci_request_regions(pdev, DRIVER_NAME);
	if (err) {
		printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
		goto fail_resources;
	}

	bridge_io = pci_iomap(pdev, 0, 0);
	if (!bridge_io) {
		printk(KERN_ERR PFX "Cannot map bridge registers\n");
		err = -EIO;
		goto fail_map_bridge;
	}

	attr_io = pci_iomap(pdev, 1, 0);
	if (!attr_io) {
		printk(KERN_ERR PFX "Cannot map PCMCIA attributes\n");
		err = -EIO;
		goto fail_map_attr;
	}

	hermes_io = pci_iomap(pdev, 2, 0);
	if (!hermes_io) {
		printk(KERN_ERR PFX "Cannot map chipset registers\n");
		err = -EIO;
		goto fail_map_hermes;
	}

	/* Allocate network device */
	priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
				orinoco_nortel_cor_reset, NULL);
	if (!priv) {
		printk(KERN_ERR PFX "Cannot allocate network device\n");
		err = -ENOMEM;
		goto fail_alloc;
	}

	card = priv->card;
	card->bridge_io = bridge_io;
	card->attr_io = attr_io;

	hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);

	err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
			  DRIVER_NAME, priv);
	if (err) {
		printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
		err = -EBUSY;
		goto fail_irq;
	}

	err = orinoco_nortel_hw_init(card);
	if (err) {
		printk(KERN_ERR PFX "Hardware initialization failed\n");
		goto fail;
	}

	err = orinoco_nortel_cor_reset(priv);
	if (err) {
		printk(KERN_ERR PFX "Initial reset failed\n");
		goto fail;
	}

	err = orinoco_init(priv);
	if (err) {
		printk(KERN_ERR PFX "orinoco_init() failed\n");
		goto fail;
	}

	err = orinoco_if_add(priv, 0, 0, NULL);
	if (err) {
		printk(KERN_ERR PFX "orinoco_if_add() failed\n");
		goto fail;
	}

	pci_set_drvdata(pdev, priv);

	return 0;

 fail:
	free_irq(pdev->irq, priv);

 fail_irq:
	pci_set_drvdata(pdev, NULL);
	free_orinocodev(priv);

 fail_alloc:
	pci_iounmap(pdev, hermes_io);

 fail_map_hermes:
	pci_iounmap(pdev, attr_io);

 fail_map_attr:
	pci_iounmap(pdev, bridge_io);

 fail_map_bridge:
	pci_release_regions(pdev);

 fail_resources:
	pci_disable_device(pdev);

	return err;
}

static void __devexit orinoco_nortel_remove_one(struct pci_dev *pdev)
{
	struct orinoco_private *priv = pci_get_drvdata(pdev);
	struct orinoco_pci_card *card = priv->card;

	/* Clear LEDs */
	iowrite16(0, card->bridge_io + 10);

	orinoco_if_del(priv);
	free_irq(pdev->irq, priv);
	pci_set_drvdata(pdev, NULL);
	free_orinocodev(priv);
	pci_iounmap(pdev, priv->hw.iobase);
	pci_iounmap(pdev, card->attr_io);
	pci_iounmap(pdev, card->bridge_io);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
}

static DEFINE_PCI_DEVICE_TABLE(orinoco_nortel_id_table) = {
	/* Nortel emobility PCI */
	{0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,},
	/* Symbol LA-4123 PCI */
	{0x1562, 0x0001, PCI_ANY_ID, PCI_ANY_ID,},
	{0,},
};

MODULE_DEVICE_TABLE(pci, orinoco_nortel_id_table);

static struct pci_driver orinoco_nortel_driver = {
	.name		= DRIVER_NAME,
	.id_table	= orinoco_nortel_id_table,
	.probe		= orinoco_nortel_init_one,
	.remove		= __devexit_p(orinoco_nortel_remove_one),
	.suspend	= orinoco_pci_suspend,
	.resume		= orinoco_pci_resume,
};

static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
	" (Tobias Hoffmann & Christoph Jungegger <disdos@traum404.de>)";
MODULE_AUTHOR("Christoph Jungegger <disdos@traum404.de>");
MODULE_DESCRIPTION("Driver for wireless LAN cards using the Nortel PCI bridge");
MODULE_LICENSE("Dual MPL/GPL");

static int __init orinoco_nortel_init(void)
{
	printk(KERN_DEBUG "%s\n", version);
	return pci_register_driver(&orinoco_nortel_driver);
}

static void __exit orinoco_nortel_exit(void)
{
	pci_unregister_driver(&orinoco_nortel_driver);
}

module_init(orinoco_nortel_init);
module_exit(orinoco_nortel_exit);

/*
 * Local variables:
 *  c-indent-level: 8
 *  c-basic-offset: 8
 *  tab-width: 8
 * End:
 */