3 * Driver for Prism II devices which would usually be driven by orinoco_cs,
4 * but are connected to the PCI bus by a Nortel PCI-PCMCIA-Adapter.
6 * Copyright (C) 2002 Tobias Hoffmann
7 * (C) 2003 Christoph Jungegger <disdos@traum404.de>
9 * Some of this code is borrowed from orinoco_plx.c
10 * Copyright (C) 2001 Daniel Barlow
11 * Some of this code is borrowed from orinoco_pci.c
12 * Copyright (C) 2001 Jean Tourrilhes
13 * Some of this code is "inspired" by linux-wlan-ng-0.1.10, but nothing
14 * has been copied from it. linux-wlan-ng-0.1.10 is originally :
15 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
17 * The contents of this file are subject to the Mozilla Public License
18 * Version 1.1 (the "License"); you may not use this file except in
19 * compliance with the License. You may obtain a copy of the License
20 * at http://www.mozilla.org/MPL/
22 * Software distributed under the License is distributed on an "AS IS"
23 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
24 * the License for the specific language governing rights and
25 * limitations under the License.
27 * Alternatively, the contents of this file may be used under the
28 * terms of the GNU General Public License version 2 (the "GPL"), in
29 * which case the provisions of the GPL are applicable instead of the
30 * above. If you wish to allow the use of your version of this file
31 * only under the terms of the GPL and not to allow others to use your
32 * version of this file under the MPL, indicate your decision by
33 * deleting the provisions above and replace them with the notice and
34 * other provisions required by the GPL. If you do not delete the
35 * provisions above, a recipient may use your version of this file
36 * under either the MPL or the GPL.
39 #define DRIVER_NAME "orinoco_nortel"
40 #define PFX DRIVER_NAME ": "
42 #include <linux/config.h>
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>
52 #define COR_OFFSET (0xe0) /* COR attribute offset of Prism2 PC card */
53 #define COR_VALUE (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
56 /* Nortel specific data */
57 struct nortel_pci_card {
58 unsigned long iobase1;
59 unsigned long iobase2;
63 * Do a soft reset of the PCI card using the Configuration Option Register
64 * We need this to get going...
65 * This is the part of the code that is strongly inspired from wlan-ng
67 * Note bis : Don't try to access HERMES_CMD during the reset phase.
68 * It just won't work !
70 static int nortel_pci_cor_reset(struct orinoco_private *priv)
72 struct nortel_pci_card *card = priv->card;
74 /* Assert the reset until the card notice */
75 outw_p(8, card->iobase1 + 2);
76 inw(card->iobase2 + COR_OFFSET);
77 outw_p(0x80, card->iobase2 + COR_OFFSET);
80 /* Give time for the card to recover from this hard effort */
81 outw_p(0, card->iobase2 + COR_OFFSET);
82 outw_p(0, card->iobase2 + COR_OFFSET);
85 /* set COR as usual */
86 outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
87 outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
90 outw_p(0x228, card->iobase1 + 2);
95 static int nortel_pci_hw_init(struct nortel_pci_card *card)
101 if (inw(card->iobase1) & 1) {
102 printk(KERN_ERR PFX "brg1 answer1 wrong\n");
105 outw_p(0x118, card->iobase1 + 2);
106 outw_p(0x108, card->iobase1 + 2);
108 outw_p(0x8, card->iobase1 + 2);
109 for (i = 0; i < 30; i++) {
111 if (inw(card->iobase1) & 0x10) {
116 printk(KERN_ERR PFX "brg1 timed out\n");
119 if (inw(card->iobase2 + 0xe0) & 1) {
120 printk(KERN_ERR PFX "brg2 answer1 wrong\n");
123 if (inw(card->iobase2 + 0xe2) & 1) {
124 printk(KERN_ERR PFX "brg2 answer2 wrong\n");
127 if (inw(card->iobase2 + 0xe4) & 1) {
128 printk(KERN_ERR PFX "brg2 answer3 wrong\n");
132 /* set the PCMCIA COR-Register */
133 outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
135 reg = inw(card->iobase2 + COR_OFFSET);
136 if (reg != COR_VALUE) {
137 printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n",
143 outw_p(1, card->iobase1 + 10);
147 static int nortel_pci_init_one(struct pci_dev *pdev,
148 const struct pci_device_id *ent)
151 struct orinoco_private *priv;
152 struct nortel_pci_card *card;
153 struct net_device *dev;
156 err = pci_enable_device(pdev);
158 printk(KERN_ERR PFX "Cannot enable PCI device\n");
162 err = pci_request_regions(pdev, DRIVER_NAME);
164 printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
168 iomem = pci_iomap(pdev, 3, 0);
174 /* Allocate network device */
175 dev = alloc_orinocodev(sizeof(*card), nortel_pci_cor_reset);
177 printk(KERN_ERR PFX "Cannot allocate network device\n");
182 priv = netdev_priv(dev);
184 card->iobase1 = pci_resource_start(pdev, 0);
185 card->iobase2 = pci_resource_start(pdev, 1);
186 dev->base_addr = pci_resource_start(pdev, 2);
187 SET_MODULE_OWNER(dev);
188 SET_NETDEV_DEV(dev, &pdev->dev);
190 hermes_struct_init(&priv->hw, iomem, HERMES_16BIT_REGSPACING);
192 printk(KERN_DEBUG PFX "Detected Nortel PCI device at %s irq:%d, "
193 "io addr:0x%lx\n", pci_name(pdev), pdev->irq, dev->base_addr);
195 err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
198 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
202 dev->irq = pdev->irq;
204 err = nortel_pci_hw_init(card);
206 printk(KERN_ERR PFX "Hardware initialization failed\n");
210 err = nortel_pci_cor_reset(priv);
212 printk(KERN_ERR PFX "Initial reset failed\n");
217 err = register_netdev(dev);
219 printk(KERN_ERR PFX "Cannot register network device\n");
223 pci_set_drvdata(pdev, dev);
228 free_irq(pdev->irq, dev);
231 pci_set_drvdata(pdev, NULL);
232 free_orinocodev(dev);
235 pci_iounmap(pdev, iomem);
238 pci_release_regions(pdev);
241 pci_disable_device(pdev);
246 static void __devexit nortel_pci_remove_one(struct pci_dev *pdev)
248 struct net_device *dev = pci_get_drvdata(pdev);
249 struct orinoco_private *priv = netdev_priv(dev);
250 struct nortel_pci_card *card = priv->card;
253 outw_p(0, card->iobase1 + 10);
255 unregister_netdev(dev);
256 free_irq(dev->irq, dev);
257 pci_set_drvdata(pdev, NULL);
258 free_orinocodev(dev);
259 pci_iounmap(pdev, priv->hw.iobase);
260 pci_release_regions(pdev);
261 pci_disable_device(pdev);
265 static struct pci_device_id nortel_pci_id_table[] = {
266 /* Nortel emobility PCI */
267 {0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,},
271 MODULE_DEVICE_TABLE(pci, nortel_pci_id_table);
273 static struct pci_driver nortel_pci_driver = {
275 .id_table = nortel_pci_id_table,
276 .probe = nortel_pci_init_one,
277 .remove = __devexit_p(nortel_pci_remove_one),
280 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
281 " (Tobias Hoffmann & Christoph Jungegger <disdos@traum404.de>)";
282 MODULE_AUTHOR("Christoph Jungegger <disdos@traum404.de>");
284 ("Driver for wireless LAN cards using the Nortel PCI bridge");
285 MODULE_LICENSE("Dual MPL/GPL");
287 static int __init nortel_pci_init(void)
289 printk(KERN_DEBUG "%s\n", version);
290 return pci_module_init(&nortel_pci_driver);
293 static void __exit nortel_pci_exit(void)
295 pci_unregister_driver(&nortel_pci_driver);
299 module_init(nortel_pci_init);
300 module_exit(nortel_pci_exit);