1/* orinoco_nortel.c
2 *
3 * Driver for Prism II devices which would usually be driven by orinoco_cs,
4 * but are connected to the PCI bus by a PCI-to-PCMCIA adapter used in
5 * Nortel emobility, Symbol LA-4113 and Symbol LA-4123.
6 *
7 * Copyright (C) 2002 Tobias Hoffmann
8 *           (C) 2003 Christoph Jungegger <disdos@traum404.de>
9 *
10 * Some of this code is borrowed from orinoco_plx.c
11 *	Copyright (C) 2001 Daniel Barlow
12 * Some of this code is borrowed from orinoco_pci.c
13 *  Copyright (C) 2001 Jean Tourrilhes
14 * Some of this code is "inspired" by linux-wlan-ng-0.1.10, but nothing
15 * has been copied from it. linux-wlan-ng-0.1.10 is originally :
16 *	Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
17 *
18 * The contents of this file are subject to the Mozilla Public License
19 * Version 1.1 (the "License"); you may not use this file except in
20 * compliance with the License. You may obtain a copy of the License
21 * at http://www.mozilla.org/MPL/
22 *
23 * Software distributed under the License is distributed on an "AS IS"
24 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
25 * the License for the specific language governing rights and
26 * limitations under the License.
27 *
28 * Alternatively, the contents of this file may be used under the
29 * terms of the GNU General Public License version 2 (the "GPL"), in
30 * which case the provisions of the GPL are applicable instead of the
31 * above.  If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the MPL, indicate your decision by
34 * deleting the provisions above and replace them with the notice and
35 * other provisions required by the GPL.  If you do not delete the
36 * provisions above, a recipient may use your version of this file
37 * under either the MPL or the GPL.
38 */
39
40#define DRIVER_NAME "orinoco_nortel"
41#define PFX DRIVER_NAME ": "
42
43#include <linux/module.h>
44#include <linux/kernel.h>
45#include <linux/init.h>
46#include <linux/delay.h>
47#include <linux/pci.h>
48#include <pcmcia/cisreg.h>
49
50#include "orinoco.h"
51#include "orinoco_pci.h"
52
53#define COR_OFFSET    (0xe0)	/* COR attribute offset of Prism2 PC card */
54#define COR_VALUE     (COR_LEVEL_REQ | COR_FUNC_ENA)	/* Enable PC card with interrupt in level trigger */
55
56
57/*
58 * Do a soft reset of the card using the Configuration Option Register
59 * We need this to get going...
60 * This is the part of the code that is strongly inspired from wlan-ng
61 *
62 * Note bis : Don't try to access HERMES_CMD during the reset phase.
63 * It just won't work !
64 */
65static int orinoco_nortel_cor_reset(struct orinoco_private *priv)
66{
67	struct orinoco_pci_card *card = priv->card;
68
69	/* Assert the reset until the card notices */
70	iowrite16(8, card->bridge_io + 2);
71	ioread16(card->attr_io + COR_OFFSET);
72	iowrite16(0x80, card->attr_io + COR_OFFSET);
73	mdelay(1);
74
75	/* Give time for the card to recover from this hard effort */
76	iowrite16(0, card->attr_io + COR_OFFSET);
77	iowrite16(0, card->attr_io + COR_OFFSET);
78	mdelay(1);
79
80	/* Set COR as usual */
81	iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
82	iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
83	mdelay(1);
84
85	iowrite16(0x228, card->bridge_io + 2);
86
87	return 0;
88}
89
90static int orinoco_nortel_hw_init(struct orinoco_pci_card *card)
91{
92	int i;
93	u32 reg;
94
95	/* Setup bridge */
96	if (ioread16(card->bridge_io) & 1) {
97		printk(KERN_ERR PFX "brg1 answer1 wrong\n");
98		return -EBUSY;
99	}
100	iowrite16(0x118, card->bridge_io + 2);
101	iowrite16(0x108, card->bridge_io + 2);
102	mdelay(30);
103	iowrite16(0x8, card->bridge_io + 2);
104	for (i = 0; i < 30; i++) {
105		mdelay(30);
106		if (ioread16(card->bridge_io) & 0x10)
107			break;
108	}
109	if (i == 30) {
110		printk(KERN_ERR PFX "brg1 timed out\n");
111		return -EBUSY;
112	}
113	if (ioread16(card->attr_io + COR_OFFSET) & 1) {
114		printk(KERN_ERR PFX "brg2 answer1 wrong\n");
115		return -EBUSY;
116	}
117	if (ioread16(card->attr_io + COR_OFFSET + 2) & 1) {
118		printk(KERN_ERR PFX "brg2 answer2 wrong\n");
119		return -EBUSY;
120	}
121	if (ioread16(card->attr_io + COR_OFFSET + 4) & 1) {
122		printk(KERN_ERR PFX "brg2 answer3 wrong\n");
123		return -EBUSY;
124	}
125
126	/* Set the PCMCIA COR register */
127	iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
128	mdelay(1);
129	reg = ioread16(card->attr_io + COR_OFFSET);
130	if (reg != COR_VALUE) {
131		printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n",
132		       reg);
133		return -EBUSY;
134	}
135
136	/* Set LEDs */
137	iowrite16(1, card->bridge_io + 10);
138	return 0;
139}
140
141static int orinoco_nortel_init_one(struct pci_dev *pdev,
142				   const struct pci_device_id *ent)
143{
144	int err;
145	struct orinoco_private *priv;
146	struct orinoco_pci_card *card;
147	void __iomem *hermes_io, *bridge_io, *attr_io;
148
149	err = pci_enable_device(pdev);
150	if (err) {
151		printk(KERN_ERR PFX "Cannot enable PCI device\n");
152		return err;
153	}
154
155	err = pci_request_regions(pdev, DRIVER_NAME);
156	if (err) {
157		printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
158		goto fail_resources;
159	}
160
161	bridge_io = pci_iomap(pdev, 0, 0);
162	if (!bridge_io) {
163		printk(KERN_ERR PFX "Cannot map bridge registers\n");
164		err = -EIO;
165		goto fail_map_bridge;
166	}
167
168	attr_io = pci_iomap(pdev, 1, 0);
169	if (!attr_io) {
170		printk(KERN_ERR PFX "Cannot map PCMCIA attributes\n");
171		err = -EIO;
172		goto fail_map_attr;
173	}
174
175	hermes_io = pci_iomap(pdev, 2, 0);
176	if (!hermes_io) {
177		printk(KERN_ERR PFX "Cannot map chipset registers\n");
178		err = -EIO;
179		goto fail_map_hermes;
180	}
181
182	/* Allocate network device */
183	priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
184				orinoco_nortel_cor_reset, NULL);
185	if (!priv) {
186		printk(KERN_ERR PFX "Cannot allocate network device\n");
187		err = -ENOMEM;
188		goto fail_alloc;
189	}
190
191	card = priv->card;
192	card->bridge_io = bridge_io;
193	card->attr_io = attr_io;
194
195	hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
196
197	err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
198			  DRIVER_NAME, priv);
199	if (err) {
200		printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
201		err = -EBUSY;
202		goto fail_irq;
203	}
204
205	err = orinoco_nortel_hw_init(card);
206	if (err) {
207		printk(KERN_ERR PFX "Hardware initialization failed\n");
208		goto fail;
209	}
210
211	err = orinoco_nortel_cor_reset(priv);
212	if (err) {
213		printk(KERN_ERR PFX "Initial reset failed\n");
214		goto fail;
215	}
216
217	err = orinoco_init(priv);
218	if (err) {
219		printk(KERN_ERR PFX "orinoco_init() failed\n");
220		goto fail;
221	}
222
223	err = orinoco_if_add(priv, 0, 0, NULL);
224	if (err) {
225		printk(KERN_ERR PFX "orinoco_if_add() failed\n");
226		goto fail_wiphy;
227	}
228
229	pci_set_drvdata(pdev, priv);
230
231	return 0;
232
233 fail_wiphy:
234	wiphy_unregister(priv_to_wiphy(priv));
235 fail:
236	free_irq(pdev->irq, priv);
237
238 fail_irq:
239	free_orinocodev(priv);
240
241 fail_alloc:
242	pci_iounmap(pdev, hermes_io);
243
244 fail_map_hermes:
245	pci_iounmap(pdev, attr_io);
246
247 fail_map_attr:
248	pci_iounmap(pdev, bridge_io);
249
250 fail_map_bridge:
251	pci_release_regions(pdev);
252
253 fail_resources:
254	pci_disable_device(pdev);
255
256	return err;
257}
258
259static void orinoco_nortel_remove_one(struct pci_dev *pdev)
260{
261	struct orinoco_private *priv = pci_get_drvdata(pdev);
262	struct orinoco_pci_card *card = priv->card;
263
264	/* Clear LEDs */
265	iowrite16(0, card->bridge_io + 10);
266
267	orinoco_if_del(priv);
268	wiphy_unregister(priv_to_wiphy(priv));
269	free_irq(pdev->irq, priv);
270	free_orinocodev(priv);
271	pci_iounmap(pdev, priv->hw.iobase);
272	pci_iounmap(pdev, card->attr_io);
273	pci_iounmap(pdev, card->bridge_io);
274	pci_release_regions(pdev);
275	pci_disable_device(pdev);
276}
277
278static const struct pci_device_id orinoco_nortel_id_table[] = {
279	/* Nortel emobility PCI */
280	{0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,},
281	/* Symbol LA-4123 PCI */
282	{0x1562, 0x0001, PCI_ANY_ID, PCI_ANY_ID,},
283	{0,},
284};
285
286MODULE_DEVICE_TABLE(pci, orinoco_nortel_id_table);
287
288static struct pci_driver orinoco_nortel_driver = {
289	.name		= DRIVER_NAME,
290	.id_table	= orinoco_nortel_id_table,
291	.probe		= orinoco_nortel_init_one,
292	.remove		= orinoco_nortel_remove_one,
293	.suspend	= orinoco_pci_suspend,
294	.resume		= orinoco_pci_resume,
295};
296
297static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
298	" (Tobias Hoffmann & Christoph Jungegger <disdos@traum404.de>)";
299MODULE_AUTHOR("Christoph Jungegger <disdos@traum404.de>");
300MODULE_DESCRIPTION("Driver for wireless LAN cards using the Nortel PCI bridge");
301MODULE_LICENSE("Dual MPL/GPL");
302
303static int __init orinoco_nortel_init(void)
304{
305	printk(KERN_DEBUG "%s\n", version);
306	return pci_register_driver(&orinoco_nortel_driver);
307}
308
309static void __exit orinoco_nortel_exit(void)
310{
311	pci_unregister_driver(&orinoco_nortel_driver);
312}
313
314module_init(orinoco_nortel_init);
315module_exit(orinoco_nortel_exit);
316
317/*
318 * Local variables:
319 *  c-indent-level: 8
320 *  c-basic-offset: 8
321 *  tab-width: 8
322 * End:
323 */
324