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Pavel Roskinec829052005-09-01 20:08:56 -04001/* orinoco_nortel.c
Pavel Roskinb884c872006-04-07 04:10:57 -04002 *
Pavel Roskinec829052005-09-01 20:08:56 -04003 * Driver for Prism II devices which would usually be driven by orinoco_cs,
Pavel Roskind4956572005-12-16 18:57:10 -05004 * 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.
Pavel Roskinec829052005-09-01 20:08:56 -04006 *
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
Pavel Roskinec829052005-09-01 20:08:56 -040043#include <linux/module.h>
44#include <linux/kernel.h>
45#include <linux/init.h>
Pavel Roskinef846bf2005-09-23 04:18:07 -040046#include <linux/delay.h>
Pavel Roskinec829052005-09-01 20:08:56 -040047#include <linux/pci.h>
Pavel Roskinec829052005-09-01 20:08:56 -040048#include <pcmcia/cisreg.h>
49
Pavel Roskinec829052005-09-01 20:08:56 -040050#include "orinoco.h"
Pavel Roskinb884c872006-04-07 04:10:57 -040051#include "orinoco_pci.h"
Pavel Roskinec829052005-09-01 20:08:56 -040052
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
Pavel Roskinec829052005-09-01 20:08:56 -040057/*
Pavel Roskindc3437d2006-04-07 04:11:00 -040058 * Do a soft reset of the card using the Configuration Option Register
Pavel Roskinec829052005-09-01 20:08:56 -040059 * 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 */
Pavel Roskinb884c872006-04-07 04:10:57 -040065static int orinoco_nortel_cor_reset(struct orinoco_private *priv)
Pavel Roskinec829052005-09-01 20:08:56 -040066{
Pavel Roskinb884c872006-04-07 04:10:57 -040067 struct orinoco_pci_card *card = priv->card;
Pavel Roskinec829052005-09-01 20:08:56 -040068
Pavel Roskindc3437d2006-04-07 04:11:00 -040069 /* Assert the reset until the card notices */
Pavel Roskinb884c872006-04-07 04:10:57 -040070 iowrite16(8, card->bridge_io + 2);
71 ioread16(card->attr_io + COR_OFFSET);
72 iowrite16(0x80, card->attr_io + COR_OFFSET);
Pavel Roskinec829052005-09-01 20:08:56 -040073 mdelay(1);
74
75 /* Give time for the card to recover from this hard effort */
Pavel Roskinb884c872006-04-07 04:10:57 -040076 iowrite16(0, card->attr_io + COR_OFFSET);
77 iowrite16(0, card->attr_io + COR_OFFSET);
Pavel Roskinec829052005-09-01 20:08:56 -040078 mdelay(1);
79
Pavel Roskinb884c872006-04-07 04:10:57 -040080 /* Set COR as usual */
81 iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
82 iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
Pavel Roskinec829052005-09-01 20:08:56 -040083 mdelay(1);
84
Pavel Roskinb884c872006-04-07 04:10:57 -040085 iowrite16(0x228, card->bridge_io + 2);
Pavel Roskinec829052005-09-01 20:08:56 -040086
87 return 0;
88}
89
Pavel Roskinb884c872006-04-07 04:10:57 -040090static int orinoco_nortel_hw_init(struct orinoco_pci_card *card)
Pavel Roskinec829052005-09-01 20:08:56 -040091{
92 int i;
93 u32 reg;
94
Pavel Roskinb884c872006-04-07 04:10:57 -040095 /* Setup bridge */
96 if (ioread16(card->bridge_io) & 1) {
Pavel Roskinec829052005-09-01 20:08:56 -040097 printk(KERN_ERR PFX "brg1 answer1 wrong\n");
98 return -EBUSY;
99 }
Pavel Roskinb884c872006-04-07 04:10:57 -0400100 iowrite16(0x118, card->bridge_io + 2);
101 iowrite16(0x108, card->bridge_io + 2);
Pavel Roskinec829052005-09-01 20:08:56 -0400102 mdelay(30);
Pavel Roskinb884c872006-04-07 04:10:57 -0400103 iowrite16(0x8, card->bridge_io + 2);
Pavel Roskinec829052005-09-01 20:08:56 -0400104 for (i = 0; i < 30; i++) {
105 mdelay(30);
Pavel Roskinb884c872006-04-07 04:10:57 -0400106 if (ioread16(card->bridge_io) & 0x10) {
Pavel Roskinec829052005-09-01 20:08:56 -0400107 break;
108 }
109 }
110 if (i == 30) {
111 printk(KERN_ERR PFX "brg1 timed out\n");
112 return -EBUSY;
113 }
Pavel Roskinb884c872006-04-07 04:10:57 -0400114 if (ioread16(card->attr_io + COR_OFFSET) & 1) {
Pavel Roskinec829052005-09-01 20:08:56 -0400115 printk(KERN_ERR PFX "brg2 answer1 wrong\n");
116 return -EBUSY;
117 }
Pavel Roskinb884c872006-04-07 04:10:57 -0400118 if (ioread16(card->attr_io + COR_OFFSET + 2) & 1) {
Pavel Roskinec829052005-09-01 20:08:56 -0400119 printk(KERN_ERR PFX "brg2 answer2 wrong\n");
120 return -EBUSY;
121 }
Pavel Roskinb884c872006-04-07 04:10:57 -0400122 if (ioread16(card->attr_io + COR_OFFSET + 4) & 1) {
Pavel Roskinec829052005-09-01 20:08:56 -0400123 printk(KERN_ERR PFX "brg2 answer3 wrong\n");
124 return -EBUSY;
125 }
126
Pavel Roskindc3437d2006-04-07 04:11:00 -0400127 /* Set the PCMCIA COR register */
Pavel Roskinb884c872006-04-07 04:10:57 -0400128 iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
Pavel Roskinec829052005-09-01 20:08:56 -0400129 mdelay(1);
Pavel Roskinb884c872006-04-07 04:10:57 -0400130 reg = ioread16(card->attr_io + COR_OFFSET);
Pavel Roskinec829052005-09-01 20:08:56 -0400131 if (reg != COR_VALUE) {
132 printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n",
133 reg);
134 return -EBUSY;
135 }
136
Pavel Roskinb884c872006-04-07 04:10:57 -0400137 /* Set LEDs */
138 iowrite16(1, card->bridge_io + 10);
Pavel Roskinec829052005-09-01 20:08:56 -0400139 return 0;
140}
141
Pavel Roskinb884c872006-04-07 04:10:57 -0400142static int orinoco_nortel_init_one(struct pci_dev *pdev,
143 const struct pci_device_id *ent)
Pavel Roskinec829052005-09-01 20:08:56 -0400144{
145 int err;
146 struct orinoco_private *priv;
Pavel Roskinb884c872006-04-07 04:10:57 -0400147 struct orinoco_pci_card *card;
Pavel Roskinec829052005-09-01 20:08:56 -0400148 struct net_device *dev;
Pavel Roskinb884c872006-04-07 04:10:57 -0400149 void __iomem *hermes_io, *bridge_io, *attr_io;
Pavel Roskinec829052005-09-01 20:08:56 -0400150
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);
Pavel Roskinb884c872006-04-07 04:10:57 -0400158 if (err) {
Pavel Roskinec829052005-09-01 20:08:56 -0400159 printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
160 goto fail_resources;
161 }
162
Pavel Roskinb884c872006-04-07 04:10:57 -0400163 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;
Pavel Roskinec829052005-09-01 20:08:56 -0400182 }
183
184 /* Allocate network device */
Pavel Roskinb884c872006-04-07 04:10:57 -0400185 dev = alloc_orinocodev(sizeof(*card), orinoco_nortel_cor_reset);
Pavel Roskinec829052005-09-01 20:08:56 -0400186 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;
Pavel Roskinb884c872006-04-07 04:10:57 -0400194 card->bridge_io = bridge_io;
195 card->attr_io = attr_io;
Pavel Roskinec829052005-09-01 20:08:56 -0400196 SET_MODULE_OWNER(dev);
197 SET_NETDEV_DEV(dev, &pdev->dev);
198
Pavel Roskinb884c872006-04-07 04:10:57 -0400199 hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
Pavel Roskinec829052005-09-01 20:08:56 -0400200
Thomas Gleixner1fb9df52006-07-01 19:29:39 -0700201 err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
Pavel Roskinec829052005-09-01 20:08:56 -0400202 dev->name, dev);
203 if (err) {
204 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
205 err = -EBUSY;
206 goto fail_irq;
207 }
Pavel Roskinec829052005-09-01 20:08:56 -0400208
Pavel Roskinb884c872006-04-07 04:10:57 -0400209 err = orinoco_nortel_hw_init(card);
Pavel Roskinec829052005-09-01 20:08:56 -0400210 if (err) {
211 printk(KERN_ERR PFX "Hardware initialization failed\n");
212 goto fail;
213 }
214
Pavel Roskinb884c872006-04-07 04:10:57 -0400215 err = orinoco_nortel_cor_reset(priv);
Pavel Roskinec829052005-09-01 20:08:56 -0400216 if (err) {
217 printk(KERN_ERR PFX "Initial reset failed\n");
218 goto fail;
219 }
220
Pavel Roskinec829052005-09-01 20:08:56 -0400221 err = register_netdev(dev);
222 if (err) {
223 printk(KERN_ERR PFX "Cannot register network device\n");
224 goto fail;
225 }
226
227 pci_set_drvdata(pdev, dev);
Pavel Roskin461c0782006-05-01 02:13:33 -0400228 printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s\n", dev->name,
229 pci_name(pdev));
Pavel Roskinec829052005-09-01 20:08:56 -0400230
231 return 0;
232
233 fail:
234 free_irq(pdev->irq, dev);
235
236 fail_irq:
237 pci_set_drvdata(pdev, NULL);
238 free_orinocodev(dev);
239
240 fail_alloc:
Pavel Roskinb884c872006-04-07 04:10:57 -0400241 pci_iounmap(pdev, hermes_io);
Pavel Roskinec829052005-09-01 20:08:56 -0400242
Pavel Roskinb884c872006-04-07 04:10:57 -0400243 fail_map_hermes:
244 pci_iounmap(pdev, attr_io);
245
246 fail_map_attr:
247 pci_iounmap(pdev, bridge_io);
248
249 fail_map_bridge:
Pavel Roskinec829052005-09-01 20:08:56 -0400250 pci_release_regions(pdev);
251
252 fail_resources:
253 pci_disable_device(pdev);
254
255 return err;
256}
257
Pavel Roskinb884c872006-04-07 04:10:57 -0400258static void __devexit orinoco_nortel_remove_one(struct pci_dev *pdev)
Pavel Roskinec829052005-09-01 20:08:56 -0400259{
260 struct net_device *dev = pci_get_drvdata(pdev);
261 struct orinoco_private *priv = netdev_priv(dev);
Pavel Roskinb884c872006-04-07 04:10:57 -0400262 struct orinoco_pci_card *card = priv->card;
Pavel Roskinec829052005-09-01 20:08:56 -0400263
Pavel Roskinb884c872006-04-07 04:10:57 -0400264 /* Clear LEDs */
265 iowrite16(0, card->bridge_io + 10);
Pavel Roskinec829052005-09-01 20:08:56 -0400266
267 unregister_netdev(dev);
Pavel Roskin461c0782006-05-01 02:13:33 -0400268 free_irq(pdev->irq, dev);
Pavel Roskinec829052005-09-01 20:08:56 -0400269 pci_set_drvdata(pdev, NULL);
270 free_orinocodev(dev);
271 pci_iounmap(pdev, priv->hw.iobase);
Pavel Roskinb884c872006-04-07 04:10:57 -0400272 pci_iounmap(pdev, card->attr_io);
273 pci_iounmap(pdev, card->bridge_io);
Pavel Roskinec829052005-09-01 20:08:56 -0400274 pci_release_regions(pdev);
275 pci_disable_device(pdev);
276}
277
Pavel Roskinb884c872006-04-07 04:10:57 -0400278static struct pci_device_id orinoco_nortel_id_table[] = {
Pavel Roskinec829052005-09-01 20:08:56 -0400279 /* Nortel emobility PCI */
280 {0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,},
Pavel Roskind4956572005-12-16 18:57:10 -0500281 /* Symbol LA-4123 PCI */
282 {0x1562, 0x0001, PCI_ANY_ID, PCI_ANY_ID,},
Pavel Roskinec829052005-09-01 20:08:56 -0400283 {0,},
284};
285
Pavel Roskinb884c872006-04-07 04:10:57 -0400286MODULE_DEVICE_TABLE(pci, orinoco_nortel_id_table);
Pavel Roskinec829052005-09-01 20:08:56 -0400287
Pavel Roskinb884c872006-04-07 04:10:57 -0400288static struct pci_driver orinoco_nortel_driver = {
Pavel Roskinc6fb2e92006-04-07 04:10:55 -0400289 .name = DRIVER_NAME,
Pavel Roskinb884c872006-04-07 04:10:57 -0400290 .id_table = orinoco_nortel_id_table,
291 .probe = orinoco_nortel_init_one,
292 .remove = __devexit_p(orinoco_nortel_remove_one),
293 .suspend = orinoco_pci_suspend,
294 .resume = orinoco_pci_resume,
Pavel Roskinec829052005-09-01 20:08:56 -0400295};
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
301 ("Driver for wireless LAN cards using the Nortel PCI bridge");
302MODULE_LICENSE("Dual MPL/GPL");
303
Pavel Roskinb884c872006-04-07 04:10:57 -0400304static int __init orinoco_nortel_init(void)
Pavel Roskinec829052005-09-01 20:08:56 -0400305{
306 printk(KERN_DEBUG "%s\n", version);
Jeff Garzik29917622006-08-19 17:48:59 -0400307 return pci_register_driver(&orinoco_nortel_driver);
Pavel Roskinec829052005-09-01 20:08:56 -0400308}
309
Pavel Roskinb884c872006-04-07 04:10:57 -0400310static void __exit orinoco_nortel_exit(void)
Pavel Roskinec829052005-09-01 20:08:56 -0400311{
Pavel Roskinb884c872006-04-07 04:10:57 -0400312 pci_unregister_driver(&orinoco_nortel_driver);
Pavel Roskinec829052005-09-01 20:08:56 -0400313}
314
Pavel Roskinb884c872006-04-07 04:10:57 -0400315module_init(orinoco_nortel_init);
316module_exit(orinoco_nortel_exit);
Pavel Roskinec829052005-09-01 20:08:56 -0400317
318/*
319 * Local variables:
320 * c-indent-level: 8
321 * c-basic-offset: 8
322 * tab-width: 8
323 * End:
324 */