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 * but are connected to the PCI bus by a Nortel PCI-PCMCIA-Adapter.
8 * Copyright (C) 2002 Tobias Hoffmann
9 * (C) 2003 Christoph Jungegger <disdos@traum404.de>
11 * Some of this code is borrowed from orinoco_plx.c
12 * Copyright (C) 2001 Daniel Barlow
13 * Some of this code is borrowed from orinoco_pci.c
14 * Copyright (C) 2001 Jean Tourrilhes
15 * Some of this code is "inspired" by linux-wlan-ng-0.1.10, but nothing
16 * has been copied from it. linux-wlan-ng-0.1.10 is originally :
17 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
19 * The contents of this file are subject to the Mozilla Public License
20 * Version 1.1 (the "License"); you may not use this file except in
21 * compliance with the License. You may obtain a copy of the License
22 * at http://www.mozilla.org/MPL/
24 * Software distributed under the License is distributed on an "AS IS"
25 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
26 * the License for the specific language governing rights and
27 * limitations under the License.
29 * Alternatively, the contents of this file may be used under the
30 * terms of the GNU General Public License version 2 (the "GPL"), in
31 * which case the provisions of the GPL are applicable instead of the
32 * above. If you wish to allow the use of your version of this file
33 * only under the terms of the GPL and not to allow others to use your
34 * version of this file under the MPL, indicate your decision by
35 * deleting the provisions above and replace them with the notice and
36 * other provisions required by the GPL. If you do not delete the
37 * provisions above, a recipient may use your version of this file
38 * under either the MPL or the GPL.
41 #define DRIVER_NAME "orinoco_nortel"
42 #define PFX DRIVER_NAME ": "
44 #include <linux/config.h>
45 #include <linux/module.h>
46 #include <linux/kernel.h>
47 #include <linux/init.h>
48 #include <linux/delay.h>
49 #include <linux/pci.h>
50 #include <pcmcia/cisreg.h>
54 #define COR_OFFSET (0xe0) /* COR attribute offset of Prism2 PC card */
55 #define COR_VALUE (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
58 /* Nortel specific data */
59 struct nortel_pci_card {
60 unsigned long iobase1;
61 unsigned long iobase2;
65 * Do a soft reset of the PCI card using the Configuration Option Register
66 * We need this to get going...
67 * This is the part of the code that is strongly inspired from wlan-ng
69 * Note bis : Don't try to access HERMES_CMD during the reset phase.
70 * It just won't work !
72 static int nortel_pci_cor_reset(struct orinoco_private *priv)
74 struct nortel_pci_card *card = priv->card;
76 /* Assert the reset until the card notice */
77 outw_p(8, card->iobase1 + 2);
78 inw(card->iobase2 + COR_OFFSET);
79 outw_p(0x80, card->iobase2 + COR_OFFSET);
82 /* Give time for the card to recover from this hard effort */
83 outw_p(0, card->iobase2 + COR_OFFSET);
84 outw_p(0, card->iobase2 + COR_OFFSET);
87 /* set COR as usual */
88 outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
89 outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
92 outw_p(0x228, card->iobase1 + 2);
97 static int nortel_pci_hw_init(struct nortel_pci_card *card)
103 if (inw(card->iobase1) & 1) {
104 printk(KERN_ERR PFX "brg1 answer1 wrong\n");
107 outw_p(0x118, card->iobase1 + 2);
108 outw_p(0x108, card->iobase1 + 2);
110 outw_p(0x8, card->iobase1 + 2);
111 for (i = 0; i < 30; i++) {
113 if (inw(card->iobase1) & 0x10) {
118 printk(KERN_ERR PFX "brg1 timed out\n");
121 if (inw(card->iobase2 + 0xe0) & 1) {
122 printk(KERN_ERR PFX "brg2 answer1 wrong\n");
125 if (inw(card->iobase2 + 0xe2) & 1) {
126 printk(KERN_ERR PFX "brg2 answer2 wrong\n");
129 if (inw(card->iobase2 + 0xe4) & 1) {
130 printk(KERN_ERR PFX "brg2 answer3 wrong\n");
134 /* set the PCMCIA COR-Register */
135 outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
137 reg = inw(card->iobase2 + COR_OFFSET);
138 if (reg != COR_VALUE) {
139 printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n",
145 outw_p(1, card->iobase1 + 10);
149 static int nortel_pci_init_one(struct pci_dev *pdev,
150 const struct pci_device_id *ent)
153 struct orinoco_private *priv;
154 struct nortel_pci_card *card;
155 struct net_device *dev;
158 err = pci_enable_device(pdev);
160 printk(KERN_ERR PFX "Cannot enable PCI device\n");
164 err = pci_request_regions(pdev, DRIVER_NAME);
166 printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
170 iomem = pci_iomap(pdev, 2, 0);
176 /* Allocate network device */
177 dev = alloc_orinocodev(sizeof(*card), nortel_pci_cor_reset);
179 printk(KERN_ERR PFX "Cannot allocate network device\n");
184 priv = netdev_priv(dev);
186 card->iobase1 = pci_resource_start(pdev, 0);
187 card->iobase2 = pci_resource_start(pdev, 1);
188 dev->base_addr = pci_resource_start(pdev, 2);
189 SET_MODULE_OWNER(dev);
190 SET_NETDEV_DEV(dev, &pdev->dev);
192 hermes_struct_init(&priv->hw, iomem, HERMES_16BIT_REGSPACING);
194 printk(KERN_DEBUG PFX "Detected Nortel PCI device at %s irq:%d, "
195 "io addr:0x%lx\n", pci_name(pdev), pdev->irq, dev->base_addr);
197 err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
200 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
204 dev->irq = pdev->irq;
206 err = nortel_pci_hw_init(card);
208 printk(KERN_ERR PFX "Hardware initialization failed\n");
212 err = nortel_pci_cor_reset(priv);
214 printk(KERN_ERR PFX "Initial reset failed\n");
219 err = register_netdev(dev);
221 printk(KERN_ERR PFX "Cannot register network device\n");
225 pci_set_drvdata(pdev, dev);
230 free_irq(pdev->irq, dev);
233 pci_set_drvdata(pdev, NULL);
234 free_orinocodev(dev);
237 pci_iounmap(pdev, iomem);
240 pci_release_regions(pdev);
243 pci_disable_device(pdev);
248 static void __devexit nortel_pci_remove_one(struct pci_dev *pdev)
250 struct net_device *dev = pci_get_drvdata(pdev);
251 struct orinoco_private *priv = netdev_priv(dev);
252 struct nortel_pci_card *card = priv->card;
255 outw_p(0, card->iobase1 + 10);
257 unregister_netdev(dev);
258 free_irq(dev->irq, dev);
259 pci_set_drvdata(pdev, NULL);
260 free_orinocodev(dev);
261 pci_iounmap(pdev, priv->hw.iobase);
262 pci_release_regions(pdev);
263 pci_disable_device(pdev);
267 static struct pci_device_id nortel_pci_id_table[] = {
268 /* Nortel emobility PCI */
269 {0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,},
270 /* Symbol LA-4123 PCI */
271 {0x1562, 0x0001, PCI_ANY_ID, PCI_ANY_ID,},
275 MODULE_DEVICE_TABLE(pci, nortel_pci_id_table);
277 static struct pci_driver nortel_pci_driver = {
279 .id_table = nortel_pci_id_table,
280 .probe = nortel_pci_init_one,
281 .remove = __devexit_p(nortel_pci_remove_one),
284 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
285 " (Tobias Hoffmann & Christoph Jungegger <disdos@traum404.de>)";
286 MODULE_AUTHOR("Christoph Jungegger <disdos@traum404.de>");
288 ("Driver for wireless LAN cards using the Nortel PCI bridge");
289 MODULE_LICENSE("Dual MPL/GPL");
291 static int __init nortel_pci_init(void)
293 printk(KERN_DEBUG "%s\n", version);
294 return pci_module_init(&nortel_pci_driver);
297 static void __exit nortel_pci_exit(void)
299 pci_unregister_driver(&nortel_pci_driver);
303 module_init(nortel_pci_init);
304 module_exit(nortel_pci_exit);