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ec829051 PR |
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 Nortel PCI-PCMCIA-Adapter. | |
5 | * | |
6 | * Copyright (C) 2002 Tobias Hoffmann | |
7 | * (C) 2003 Christoph Jungegger <disdos@traum404.de> | |
8 | * | |
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. | |
16 | * | |
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/ | |
21 | * | |
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. | |
26 | * | |
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. | |
37 | */ | |
38 | ||
39 | #define DRIVER_NAME "orinoco_nortel" | |
40 | #define PFX DRIVER_NAME ": " | |
41 | ||
42 | #include <linux/config.h> | |
ec829051 PR |
43 | #include <linux/module.h> |
44 | #include <linux/kernel.h> | |
45 | #include <linux/init.h> | |
ef846bf0 | 46 | #include <linux/delay.h> |
ec829051 | 47 | #include <linux/pci.h> |
ec829051 PR |
48 | #include <pcmcia/cisreg.h> |
49 | ||
ec829051 PR |
50 | #include "orinoco.h" |
51 | ||
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 */ | |
54 | ||
55 | ||
56 | /* Nortel specific data */ | |
57 | struct nortel_pci_card { | |
58 | unsigned long iobase1; | |
59 | unsigned long iobase2; | |
60 | }; | |
61 | ||
62 | /* | |
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 | |
66 | * | |
67 | * Note bis : Don't try to access HERMES_CMD during the reset phase. | |
68 | * It just won't work ! | |
69 | */ | |
70 | static int nortel_pci_cor_reset(struct orinoco_private *priv) | |
71 | { | |
72 | struct nortel_pci_card *card = priv->card; | |
73 | ||
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); | |
78 | mdelay(1); | |
79 | ||
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); | |
83 | mdelay(1); | |
84 | ||
85 | /* set COR as usual */ | |
86 | outw_p(COR_VALUE, card->iobase2 + COR_OFFSET); | |
87 | outw_p(COR_VALUE, card->iobase2 + COR_OFFSET); | |
88 | mdelay(1); | |
89 | ||
90 | outw_p(0x228, card->iobase1 + 2); | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
4c082025 | 95 | static int nortel_pci_hw_init(struct nortel_pci_card *card) |
ec829051 PR |
96 | { |
97 | int i; | |
98 | u32 reg; | |
99 | ||
100 | /* setup bridge */ | |
101 | if (inw(card->iobase1) & 1) { | |
102 | printk(KERN_ERR PFX "brg1 answer1 wrong\n"); | |
103 | return -EBUSY; | |
104 | } | |
105 | outw_p(0x118, card->iobase1 + 2); | |
106 | outw_p(0x108, card->iobase1 + 2); | |
107 | mdelay(30); | |
108 | outw_p(0x8, card->iobase1 + 2); | |
109 | for (i = 0; i < 30; i++) { | |
110 | mdelay(30); | |
111 | if (inw(card->iobase1) & 0x10) { | |
112 | break; | |
113 | } | |
114 | } | |
115 | if (i == 30) { | |
116 | printk(KERN_ERR PFX "brg1 timed out\n"); | |
117 | return -EBUSY; | |
118 | } | |
119 | if (inw(card->iobase2 + 0xe0) & 1) { | |
120 | printk(KERN_ERR PFX "brg2 answer1 wrong\n"); | |
121 | return -EBUSY; | |
122 | } | |
123 | if (inw(card->iobase2 + 0xe2) & 1) { | |
124 | printk(KERN_ERR PFX "brg2 answer2 wrong\n"); | |
125 | return -EBUSY; | |
126 | } | |
127 | if (inw(card->iobase2 + 0xe4) & 1) { | |
128 | printk(KERN_ERR PFX "brg2 answer3 wrong\n"); | |
129 | return -EBUSY; | |
130 | } | |
131 | ||
132 | /* set the PCMCIA COR-Register */ | |
133 | outw_p(COR_VALUE, card->iobase2 + COR_OFFSET); | |
134 | mdelay(1); | |
135 | reg = inw(card->iobase2 + COR_OFFSET); | |
136 | if (reg != COR_VALUE) { | |
137 | printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n", | |
138 | reg); | |
139 | return -EBUSY; | |
140 | } | |
141 | ||
142 | /* set leds */ | |
143 | outw_p(1, card->iobase1 + 10); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static int nortel_pci_init_one(struct pci_dev *pdev, | |
148 | const struct pci_device_id *ent) | |
149 | { | |
150 | int err; | |
151 | struct orinoco_private *priv; | |
152 | struct nortel_pci_card *card; | |
153 | struct net_device *dev; | |
154 | void __iomem *iomem; | |
155 | ||
156 | err = pci_enable_device(pdev); | |
157 | if (err) { | |
158 | printk(KERN_ERR PFX "Cannot enable PCI device\n"); | |
159 | return err; | |
160 | } | |
161 | ||
162 | err = pci_request_regions(pdev, DRIVER_NAME); | |
163 | if (err != 0) { | |
164 | printk(KERN_ERR PFX "Cannot obtain PCI resources\n"); | |
165 | goto fail_resources; | |
166 | } | |
167 | ||
168 | iomem = pci_iomap(pdev, 3, 0); | |
169 | if (!iomem) { | |
170 | err = -ENOMEM; | |
171 | goto fail_map_io; | |
172 | } | |
173 | ||
174 | /* Allocate network device */ | |
175 | dev = alloc_orinocodev(sizeof(*card), nortel_pci_cor_reset); | |
176 | if (!dev) { | |
177 | printk(KERN_ERR PFX "Cannot allocate network device\n"); | |
178 | err = -ENOMEM; | |
179 | goto fail_alloc; | |
180 | } | |
181 | ||
182 | priv = netdev_priv(dev); | |
183 | card = priv->card; | |
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); | |
189 | ||
190 | hermes_struct_init(&priv->hw, iomem, HERMES_16BIT_REGSPACING); | |
191 | ||
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); | |
194 | ||
195 | err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ, | |
196 | dev->name, dev); | |
197 | if (err) { | |
198 | printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq); | |
199 | err = -EBUSY; | |
200 | goto fail_irq; | |
201 | } | |
202 | dev->irq = pdev->irq; | |
203 | ||
204 | err = nortel_pci_hw_init(card); | |
205 | if (err) { | |
206 | printk(KERN_ERR PFX "Hardware initialization failed\n"); | |
207 | goto fail; | |
208 | } | |
209 | ||
210 | err = nortel_pci_cor_reset(priv); | |
211 | if (err) { | |
212 | printk(KERN_ERR PFX "Initial reset failed\n"); | |
213 | goto fail; | |
214 | } | |
215 | ||
216 | ||
217 | err = register_netdev(dev); | |
218 | if (err) { | |
219 | printk(KERN_ERR PFX "Cannot register network device\n"); | |
220 | goto fail; | |
221 | } | |
222 | ||
223 | pci_set_drvdata(pdev, dev); | |
224 | ||
225 | return 0; | |
226 | ||
227 | fail: | |
228 | free_irq(pdev->irq, dev); | |
229 | ||
230 | fail_irq: | |
231 | pci_set_drvdata(pdev, NULL); | |
232 | free_orinocodev(dev); | |
233 | ||
234 | fail_alloc: | |
235 | pci_iounmap(pdev, iomem); | |
236 | ||
237 | fail_map_io: | |
238 | pci_release_regions(pdev); | |
239 | ||
240 | fail_resources: | |
241 | pci_disable_device(pdev); | |
242 | ||
243 | return err; | |
244 | } | |
245 | ||
246 | static void __devexit nortel_pci_remove_one(struct pci_dev *pdev) | |
247 | { | |
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; | |
251 | ||
252 | /* clear leds */ | |
253 | outw_p(0, card->iobase1 + 10); | |
254 | ||
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); | |
262 | } | |
263 | ||
264 | ||
265 | static struct pci_device_id nortel_pci_id_table[] = { | |
266 | /* Nortel emobility PCI */ | |
267 | {0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,}, | |
268 | {0,}, | |
269 | }; | |
270 | ||
271 | MODULE_DEVICE_TABLE(pci, nortel_pci_id_table); | |
272 | ||
273 | static struct pci_driver nortel_pci_driver = { | |
274 | .name = DRIVER_NAME, | |
275 | .id_table = nortel_pci_id_table, | |
276 | .probe = nortel_pci_init_one, | |
277 | .remove = __devexit_p(nortel_pci_remove_one), | |
278 | }; | |
279 | ||
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>"); | |
283 | MODULE_DESCRIPTION | |
284 | ("Driver for wireless LAN cards using the Nortel PCI bridge"); | |
285 | MODULE_LICENSE("Dual MPL/GPL"); | |
286 | ||
287 | static int __init nortel_pci_init(void) | |
288 | { | |
289 | printk(KERN_DEBUG "%s\n", version); | |
290 | return pci_module_init(&nortel_pci_driver); | |
291 | } | |
292 | ||
293 | static void __exit nortel_pci_exit(void) | |
294 | { | |
295 | pci_unregister_driver(&nortel_pci_driver); | |
296 | ssleep(1); | |
297 | } | |
298 | ||
299 | module_init(nortel_pci_init); | |
300 | module_exit(nortel_pci_exit); | |
301 | ||
302 | /* | |
303 | * Local variables: | |
304 | * c-indent-level: 8 | |
305 | * c-basic-offset: 8 | |
306 | * tab-width: 8 | |
307 | * End: | |
308 | */ |