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orinoco_tmd.c
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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  * The actual driving is done by main.c, this is just resource
31  * allocation stuff.
32  *
33  * This driver is modeled after the orinoco_plx driver. The main
34  * difference is that the TMD chip has only IO port ranges and doesn't
35  * provide access to the PCMCIA attribute space.
36  *
37  * Pheecom sells cards with the TMD chip as "ASIC version"
38  */
39 
40 #define DRIVER_NAME "orinoco_tmd"
41 #define PFX DRIVER_NAME ": "
42 
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>
49 
50 #include "orinoco.h"
51 #include "orinoco_pci.h"
52 
53 #define COR_VALUE (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
54 #define COR_RESET (0x80) /* reset bit in the COR register */
55 #define TMD_RESET_TIME (500) /* milliseconds */
56 
57 /*
58  * Do a soft reset of the card using the Configuration Option Register
59  */
60 static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
61 {
62  struct hermes *hw = &priv->hw;
63  struct orinoco_pci_card *card = priv->card;
64  unsigned long timeout;
65  u16 reg;
66 
68  mdelay(1);
69 
71  mdelay(1);
72 
73  /* Just in case, wait more until the card is no longer busy */
74  timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
75  reg = hermes_read_regn(hw, CMD);
76  while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
77  mdelay(1);
78  reg = hermes_read_regn(hw, CMD);
79  }
80 
81  /* Still busy? */
82  if (reg & HERMES_CMD_BUSY) {
83  printk(KERN_ERR PFX "Busy timeout\n");
84  return -ETIMEDOUT;
85  }
86 
87  return 0;
88 }
89 
90 
91 static int orinoco_tmd_init_one(struct pci_dev *pdev,
92  const struct pci_device_id *ent)
93 {
94  int err;
95  struct orinoco_private *priv;
96  struct orinoco_pci_card *card;
97  void __iomem *hermes_io, *bridge_io;
98 
99  err = pci_enable_device(pdev);
100  if (err) {
101  printk(KERN_ERR PFX "Cannot enable PCI device\n");
102  return err;
103  }
104 
105  err = pci_request_regions(pdev, DRIVER_NAME);
106  if (err) {
107  printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
108  goto fail_resources;
109  }
110 
111  bridge_io = pci_iomap(pdev, 1, 0);
112  if (!bridge_io) {
113  printk(KERN_ERR PFX "Cannot map bridge registers\n");
114  err = -EIO;
115  goto fail_map_bridge;
116  }
117 
118  hermes_io = pci_iomap(pdev, 2, 0);
119  if (!hermes_io) {
120  printk(KERN_ERR PFX "Cannot map chipset registers\n");
121  err = -EIO;
122  goto fail_map_hermes;
123  }
124 
125  /* Allocate network device */
126  priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
127  orinoco_tmd_cor_reset, NULL);
128  if (!priv) {
129  printk(KERN_ERR PFX "Cannot allocate network device\n");
130  err = -ENOMEM;
131  goto fail_alloc;
132  }
133 
134  card = priv->card;
135  card->bridge_io = bridge_io;
136 
137  hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
138 
140  DRIVER_NAME, priv);
141  if (err) {
142  printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
143  err = -EBUSY;
144  goto fail_irq;
145  }
146 
147  err = orinoco_tmd_cor_reset(priv);
148  if (err) {
149  printk(KERN_ERR PFX "Initial reset failed\n");
150  goto fail;
151  }
152 
153  err = orinoco_init(priv);
154  if (err) {
155  printk(KERN_ERR PFX "orinoco_init() failed\n");
156  goto fail;
157  }
158 
159  err = orinoco_if_add(priv, 0, 0, NULL);
160  if (err) {
161  printk(KERN_ERR PFX "orinoco_if_add() failed\n");
162  goto fail;
163  }
164 
165  pci_set_drvdata(pdev, priv);
166 
167  return 0;
168 
169  fail:
170  free_irq(pdev->irq, priv);
171 
172  fail_irq:
173  pci_set_drvdata(pdev, NULL);
174  free_orinocodev(priv);
175 
176  fail_alloc:
177  pci_iounmap(pdev, hermes_io);
178 
179  fail_map_hermes:
180  pci_iounmap(pdev, bridge_io);
181 
182  fail_map_bridge:
183  pci_release_regions(pdev);
184 
185  fail_resources:
186  pci_disable_device(pdev);
187 
188  return err;
189 }
190 
191 static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev)
192 {
193  struct orinoco_private *priv = pci_get_drvdata(pdev);
194  struct orinoco_pci_card *card = priv->card;
195 
196  orinoco_if_del(priv);
197  free_irq(pdev->irq, priv);
198  pci_set_drvdata(pdev, NULL);
199  free_orinocodev(priv);
200  pci_iounmap(pdev, priv->hw.iobase);
201  pci_iounmap(pdev, card->bridge_io);
202  pci_release_regions(pdev);
203  pci_disable_device(pdev);
204 }
205 
206 static DEFINE_PCI_DEVICE_TABLE(orinoco_tmd_id_table) = {
207  {0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,}, /* NDC and OEMs, e.g. pheecom */
208  {0,},
209 };
210 
211 MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
212 
213 static struct pci_driver orinoco_tmd_driver = {
214  .name = DRIVER_NAME,
215  .id_table = orinoco_tmd_id_table,
216  .probe = orinoco_tmd_init_one,
217  .remove = __devexit_p(orinoco_tmd_remove_one),
218  .suspend = orinoco_pci_suspend,
219  .resume = orinoco_pci_resume,
220 };
221 
222 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
223  " (Joerg Dorchain <[email protected]>)";
224 MODULE_AUTHOR("Joerg Dorchain <[email protected]>");
225 MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
226 MODULE_LICENSE("Dual MPL/GPL");
227 
228 static int __init orinoco_tmd_init(void)
229 {
230  printk(KERN_DEBUG "%s\n", version);
231  return pci_register_driver(&orinoco_tmd_driver);
232 }
233 
234 static void __exit orinoco_tmd_exit(void)
235 {
236  pci_unregister_driver(&orinoco_tmd_driver);
237 }
238 
239 module_init(orinoco_tmd_init);
240 module_exit(orinoco_tmd_exit);
241 
242 /*
243  * Local variables:
244  * c-indent-level: 8
245  * c-basic-offset: 8
246  * tab-width: 8
247  * End:
248  */