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 */
65 static 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
90 static 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 }
110 if (i == 30) {
111 printk(KERN_ERR PFX "brg1 timed out\n");
112 return -EBUSY;
113 }
114 if (ioread16(card->attr_io + COR_OFFSET) & 1) {
115 printk(KERN_ERR PFX "brg2 answer1 wrong\n");
116 return -EBUSY;
117 }
118 if (ioread16(card->attr_io + COR_OFFSET + 2) & 1) {
119 printk(KERN_ERR PFX "brg2 answer2 wrong\n");
120 return -EBUSY;
121 }
122 if (ioread16(card->attr_io + COR_OFFSET + 4) & 1) {
123 printk(KERN_ERR PFX "brg2 answer3 wrong\n");
124 return -EBUSY;
125 }
126
127 /* Set the PCMCIA COR register */
128 iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
129 mdelay(1);
130 reg = ioread16(card->attr_io + COR_OFFSET);
131 if (reg != COR_VALUE) {
132 printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n",
133 reg);
134 return -EBUSY;
135 }
136
137 /* Set LEDs */
138 iowrite16(1, card->bridge_io + 10);
139 return 0;
140 }
141
142 static int orinoco_nortel_init_one(struct pci_dev *pdev,
143 const struct pci_device_id *ent)
144 {
145 int err;
146 struct orinoco_private *priv;
147 struct orinoco_pci_card *card;
148 struct net_device *dev;
149 void __iomem *hermes_io, *bridge_io, *attr_io;
150
151 err = pci_enable_device(pdev);
152 if (err) {
153 printk(KERN_ERR PFX "Cannot enable PCI device\n");
154 return err;
155 }
156
157 err = pci_request_regions(pdev, DRIVER_NAME);
158 if (err) {
159 printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
160 goto fail_resources;
161 }
162
163 bridge_io = pci_iomap(pdev, 0, 0);
164 if (!bridge_io) {
165 printk(KERN_ERR PFX "Cannot map bridge registers\n");
166 err = -EIO;
167 goto fail_map_bridge;
168 }
169
170 attr_io = pci_iomap(pdev, 1, 0);
171 if (!attr_io) {
172 printk(KERN_ERR PFX "Cannot map PCMCIA attributes\n");
173 err = -EIO;
174 goto fail_map_attr;
175 }
176
177 hermes_io = pci_iomap(pdev, 2, 0);
178 if (!hermes_io) {
179 printk(KERN_ERR PFX "Cannot map chipset registers\n");
180 err = -EIO;
181 goto fail_map_hermes;
182 }
183
184 /* Allocate network device */
185 dev = alloc_orinocodev(sizeof(*card), orinoco_nortel_cor_reset);
186 if (!dev) {
187 printk(KERN_ERR PFX "Cannot allocate network device\n");
188 err = -ENOMEM;
189 goto fail_alloc;
190 }
191
192 priv = netdev_priv(dev);
193 card = priv->card;
194 card->bridge_io = bridge_io;
195 card->attr_io = attr_io;
196 SET_NETDEV_DEV(dev, &pdev->dev);
197
198 hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
199
200 err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
201 dev->name, dev);
202 if (err) {
203 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
204 err = -EBUSY;
205 goto fail_irq;
206 }
207
208 err = orinoco_nortel_hw_init(card);
209 if (err) {
210 printk(KERN_ERR PFX "Hardware initialization failed\n");
211 goto fail;
212 }
213
214 err = orinoco_nortel_cor_reset(priv);
215 if (err) {
216 printk(KERN_ERR PFX "Initial reset failed\n");
217 goto fail;
218 }
219
220 err = register_netdev(dev);
221 if (err) {
222 printk(KERN_ERR PFX "Cannot register network device\n");
223 goto fail;
224 }
225
226 pci_set_drvdata(pdev, dev);
227 printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s\n", dev->name,
228 pci_name(pdev));
229
230 return 0;
231
232 fail:
233 free_irq(pdev->irq, dev);
234
235 fail_irq:
236 pci_set_drvdata(pdev, NULL);
237 free_orinocodev(dev);
238
239 fail_alloc:
240 pci_iounmap(pdev, hermes_io);
241
242 fail_map_hermes:
243 pci_iounmap(pdev, attr_io);
244
245 fail_map_attr:
246 pci_iounmap(pdev, bridge_io);
247
248 fail_map_bridge:
249 pci_release_regions(pdev);
250
251 fail_resources:
252 pci_disable_device(pdev);
253
254 return err;
255 }
256
257 static void __devexit orinoco_nortel_remove_one(struct pci_dev *pdev)
258 {
259 struct net_device *dev = pci_get_drvdata(pdev);
260 struct orinoco_private *priv = netdev_priv(dev);
261 struct orinoco_pci_card *card = priv->card;
262
263 /* Clear LEDs */
264 iowrite16(0, card->bridge_io + 10);
265
266 unregister_netdev(dev);
267 free_irq(pdev->irq, dev);
268 pci_set_drvdata(pdev, NULL);
269 free_orinocodev(dev);
270 pci_iounmap(pdev, priv->hw.iobase);
271 pci_iounmap(pdev, card->attr_io);
272 pci_iounmap(pdev, card->bridge_io);
273 pci_release_regions(pdev);
274 pci_disable_device(pdev);
275 }
276
277 static struct pci_device_id orinoco_nortel_id_table[] = {
278 /* Nortel emobility PCI */
279 {0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,},
280 /* Symbol LA-4123 PCI */
281 {0x1562, 0x0001, PCI_ANY_ID, PCI_ANY_ID,},
282 {0,},
283 };
284
285 MODULE_DEVICE_TABLE(pci, orinoco_nortel_id_table);
286
287 static struct pci_driver orinoco_nortel_driver = {
288 .name = DRIVER_NAME,
289 .id_table = orinoco_nortel_id_table,
290 .probe = orinoco_nortel_init_one,
291 .remove = __devexit_p(orinoco_nortel_remove_one),
292 .suspend = orinoco_pci_suspend,
293 .resume = orinoco_pci_resume,
294 };
295
296 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
297 " (Tobias Hoffmann & Christoph Jungegger <disdos@traum404.de>)";
298 MODULE_AUTHOR("Christoph Jungegger <disdos@traum404.de>");
299 MODULE_DESCRIPTION
300 ("Driver for wireless LAN cards using the Nortel PCI bridge");
301 MODULE_LICENSE("Dual MPL/GPL");
302
303 static int __init orinoco_nortel_init(void)
304 {
305 printk(KERN_DEBUG "%s\n", version);
306 return pci_register_driver(&orinoco_nortel_driver);
307 }
308
309 static void __exit orinoco_nortel_exit(void)
310 {
311 pci_unregister_driver(&orinoco_nortel_driver);
312 }
313
314 module_init(orinoco_nortel_init);
315 module_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
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