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1da177e4 LT |
1 | /* orinoco_tmd.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 TMD7160. | |
5 | * | |
6 | * Copyright (C) 2003 Joerg Dorchain <joerg AT dorchain.net> | |
7 | * based heavily upon orinoco_plx.c Copyright (C) 2001 Daniel Barlow | |
8 | * | |
9 | * The contents of this file are subject to the Mozilla Public License | |
10 | * Version 1.1 (the "License"); you may not use this file except in | |
11 | * compliance with the License. You may obtain a copy of the License | |
12 | * at http://www.mozilla.org/MPL/ | |
13 | * | |
14 | * Software distributed under the License is distributed on an "AS IS" | |
15 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See | |
16 | * the License for the specific language governing rights and | |
17 | * limitations under the License. | |
18 | * | |
19 | * Alternatively, the contents of this file may be used under the | |
20 | * terms of the GNU General Public License version 2 (the "GPL"), in | |
21 | * which case the provisions of the GPL are applicable instead of the | |
22 | * above. If you wish to allow the use of your version of this file | |
23 | * only under the terms of the GPL and not to allow others to use your | |
24 | * version of this file under the MPL, indicate your decision by | |
25 | * deleting the provisions above and replace them with the notice and | |
26 | * other provisions required by the GPL. If you do not delete the | |
27 | * provisions above, a recipient may use your version of this file | |
28 | * under either the MPL or the GPL. | |
29 | ||
30 | * Caution: this is experimental and probably buggy. For success and | |
31 | * failure reports for different cards and adaptors, see | |
32 | * orinoco_tmd_pci_id_table near the end of the file. If you have a | |
33 | * card we don't have the PCI id for, and looks like it should work, | |
34 | * drop me mail with the id and "it works"/"it doesn't work". | |
35 | * | |
36 | * Note: if everything gets detected fine but it doesn't actually send | |
37 | * or receive packets, your first port of call should probably be to | |
38 | * try newer firmware in the card. Especially if you're doing Ad-Hoc | |
39 | * modes | |
40 | * | |
41 | * The actual driving is done by orinoco.c, this is just resource | |
42 | * allocation stuff. | |
43 | * | |
44 | * This driver is modeled after the orinoco_plx driver. The main | |
45 | * difference is that the TMD chip has only IO port ranges and no | |
46 | * memory space, i.e. no access to the CIS. Compared to the PLX chip, | |
47 | * the io range functionalities are exchanged. | |
48 | * | |
49 | * Pheecom sells cards with the TMD chip as "ASIC version" | |
50 | */ | |
51 | ||
52 | #define DRIVER_NAME "orinoco_tmd" | |
53 | #define PFX DRIVER_NAME ": " | |
54 | ||
55 | #include <linux/config.h> | |
56 | ||
57 | #include <linux/module.h> | |
58 | #include <linux/kernel.h> | |
59 | #include <linux/init.h> | |
60 | #include <linux/sched.h> | |
61 | #include <linux/ptrace.h> | |
62 | #include <linux/slab.h> | |
63 | #include <linux/string.h> | |
64 | #include <linux/timer.h> | |
65 | #include <linux/ioport.h> | |
66 | #include <asm/uaccess.h> | |
67 | #include <asm/io.h> | |
68 | #include <asm/system.h> | |
69 | #include <linux/netdevice.h> | |
70 | #include <linux/if_arp.h> | |
71 | #include <linux/etherdevice.h> | |
72 | #include <linux/list.h> | |
73 | #include <linux/pci.h> | |
74 | #include <linux/fcntl.h> | |
75 | ||
76 | #include <pcmcia/cisreg.h> | |
77 | ||
78 | #include "hermes.h" | |
79 | #include "orinoco.h" | |
80 | ||
81 | #define COR_VALUE (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */ | |
82 | #define COR_RESET (0x80) /* reset bit in the COR register */ | |
83 | #define TMD_RESET_TIME (500) /* milliseconds */ | |
84 | ||
85 | /* Orinoco TMD specific data */ | |
86 | struct orinoco_tmd_card { | |
87 | u32 tmd_io; | |
88 | }; | |
89 | ||
90 | ||
91 | /* | |
92 | * Do a soft reset of the card using the Configuration Option Register | |
93 | */ | |
94 | static int orinoco_tmd_cor_reset(struct orinoco_private *priv) | |
95 | { | |
96 | hermes_t *hw = &priv->hw; | |
97 | struct orinoco_tmd_card *card = priv->card; | |
98 | u32 addr = card->tmd_io; | |
99 | unsigned long timeout; | |
100 | u16 reg; | |
101 | ||
102 | outb(COR_VALUE | COR_RESET, addr); | |
103 | mdelay(1); | |
104 | ||
105 | outb(COR_VALUE, addr); | |
106 | mdelay(1); | |
107 | ||
108 | /* Just in case, wait more until the card is no longer busy */ | |
109 | timeout = jiffies + (TMD_RESET_TIME * HZ / 1000); | |
110 | reg = hermes_read_regn(hw, CMD); | |
111 | while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) { | |
112 | mdelay(1); | |
113 | reg = hermes_read_regn(hw, CMD); | |
114 | } | |
115 | ||
116 | /* Did we timeout ? */ | |
117 | if (reg & HERMES_CMD_BUSY) { | |
118 | printk(KERN_ERR PFX "Busy timeout\n"); | |
119 | return -ETIMEDOUT; | |
120 | } | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | ||
126 | static int orinoco_tmd_init_one(struct pci_dev *pdev, | |
127 | const struct pci_device_id *ent) | |
128 | { | |
129 | int err = 0; | |
130 | struct orinoco_private *priv = NULL; | |
131 | struct orinoco_tmd_card *card; | |
132 | struct net_device *dev = NULL; | |
133 | void __iomem *mem; | |
134 | ||
135 | err = pci_enable_device(pdev); | |
136 | if (err) { | |
137 | printk(KERN_ERR PFX "Cannot enable PCI device\n"); | |
138 | return err; | |
139 | } | |
140 | ||
141 | err = pci_request_regions(pdev, DRIVER_NAME); | |
142 | if (err != 0) { | |
143 | printk(KERN_ERR PFX "Cannot obtain PCI resources\n"); | |
144 | goto fail_resources; | |
145 | } | |
146 | ||
147 | mem = pci_iomap(pdev, 2, 0); | |
148 | if (! mem) { | |
149 | err = -ENOMEM; | |
150 | goto fail_iomap; | |
151 | } | |
152 | ||
153 | /* Allocate network device */ | |
154 | dev = alloc_orinocodev(sizeof(*card), orinoco_tmd_cor_reset); | |
155 | if (! dev) { | |
156 | printk(KERN_ERR PFX "Cannot allocate network device\n"); | |
157 | err = -ENOMEM; | |
158 | goto fail_alloc; | |
159 | } | |
160 | ||
161 | priv = netdev_priv(dev); | |
162 | card = priv->card; | |
163 | card->tmd_io = pci_resource_start(pdev, 1); | |
164 | dev->base_addr = pci_resource_start(pdev, 2); | |
165 | SET_MODULE_OWNER(dev); | |
166 | SET_NETDEV_DEV(dev, &pdev->dev); | |
167 | ||
168 | hermes_struct_init(&priv->hw, mem, HERMES_16BIT_REGSPACING); | |
169 | ||
170 | printk(KERN_DEBUG PFX "Detected Orinoco/Prism2 TMD device " | |
171 | "at %s irq:%d, io addr:0x%lx\n", pci_name(pdev), pdev->irq, | |
172 | dev->base_addr); | |
173 | ||
174 | err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ, | |
175 | dev->name, dev); | |
176 | if (err) { | |
177 | printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq); | |
178 | err = -EBUSY; | |
179 | goto fail_irq; | |
180 | } | |
181 | dev->irq = pdev->irq; | |
182 | ||
183 | err = orinoco_tmd_cor_reset(priv); | |
184 | if (err) { | |
185 | printk(KERN_ERR PFX "Initial reset failed\n"); | |
186 | goto fail; | |
187 | } | |
188 | ||
189 | err = register_netdev(dev); | |
190 | if (err) { | |
191 | printk(KERN_ERR PFX "Cannot register network device\n"); | |
192 | goto fail; | |
193 | } | |
194 | ||
195 | pci_set_drvdata(pdev, dev); | |
196 | ||
197 | return 0; | |
198 | ||
199 | fail: | |
200 | free_irq(pdev->irq, dev); | |
201 | ||
202 | fail_irq: | |
203 | pci_set_drvdata(pdev, NULL); | |
204 | free_orinocodev(dev); | |
205 | ||
206 | fail_alloc: | |
207 | pci_iounmap(pdev, mem); | |
208 | ||
209 | fail_iomap: | |
210 | pci_release_regions(pdev); | |
211 | ||
212 | fail_resources: | |
213 | pci_disable_device(pdev); | |
214 | ||
215 | return err; | |
216 | } | |
217 | ||
218 | static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev) | |
219 | { | |
220 | struct net_device *dev = pci_get_drvdata(pdev); | |
221 | struct orinoco_private *priv = dev->priv; | |
222 | ||
223 | BUG_ON(! dev); | |
224 | ||
225 | unregister_netdev(dev); | |
226 | free_irq(dev->irq, dev); | |
227 | pci_set_drvdata(pdev, NULL); | |
228 | free_orinocodev(dev); | |
229 | pci_iounmap(pdev, priv->hw.iobase); | |
230 | pci_release_regions(pdev); | |
231 | pci_disable_device(pdev); | |
232 | } | |
233 | ||
234 | ||
235 | static struct pci_device_id orinoco_tmd_pci_id_table[] = { | |
236 | {0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,}, /* NDC and OEMs, e.g. pheecom */ | |
237 | {0,}, | |
238 | }; | |
239 | ||
240 | MODULE_DEVICE_TABLE(pci, orinoco_tmd_pci_id_table); | |
241 | ||
242 | static struct pci_driver orinoco_tmd_driver = { | |
243 | .name = DRIVER_NAME, | |
244 | .id_table = orinoco_tmd_pci_id_table, | |
245 | .probe = orinoco_tmd_init_one, | |
246 | .remove = __devexit_p(orinoco_tmd_remove_one), | |
247 | }; | |
248 | ||
249 | static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION | |
250 | " (Joerg Dorchain <joerg@dorchain.net>)"; | |
251 | MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>"); | |
252 | MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge"); | |
253 | MODULE_LICENSE("Dual MPL/GPL"); | |
254 | ||
255 | static int __init orinoco_tmd_init(void) | |
256 | { | |
257 | printk(KERN_DEBUG "%s\n", version); | |
258 | return pci_module_init(&orinoco_tmd_driver); | |
259 | } | |
260 | ||
261 | static void __exit orinoco_tmd_exit(void) | |
262 | { | |
263 | pci_unregister_driver(&orinoco_tmd_driver); | |
264 | ssleep(1); | |
265 | } | |
266 | ||
267 | module_init(orinoco_tmd_init); | |
268 | module_exit(orinoco_tmd_exit); | |
269 | ||
270 | /* | |
271 | * Local variables: | |
272 | * c-indent-level: 8 | |
273 | * c-basic-offset: 8 | |
274 | * tab-width: 8 | |
275 | * End: | |
276 | */ |