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 */
60static 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
67	iowrite8(COR_VALUE | COR_RESET, card->bridge_io);
68	mdelay(1);
69
70	iowrite8(COR_VALUE, card->bridge_io);
71	mdelay(1);
72
73	/* Just in case, wait more until the card is no longer busy */
74	timeout = jiffies + msecs_to_jiffies(TMD_RESET_TIME);
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
91static 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
139	err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
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	free_orinocodev(priv);
174
175 fail_alloc:
176	pci_iounmap(pdev, hermes_io);
177
178 fail_map_hermes:
179	pci_iounmap(pdev, bridge_io);
180
181 fail_map_bridge:
182	pci_release_regions(pdev);
183
184 fail_resources:
185	pci_disable_device(pdev);
186
187	return err;
188}
189
190static void orinoco_tmd_remove_one(struct pci_dev *pdev)
191{
192	struct orinoco_private *priv = pci_get_drvdata(pdev);
193	struct orinoco_pci_card *card = priv->card;
194
195	orinoco_if_del(priv);
196	free_irq(pdev->irq, priv);
197	free_orinocodev(priv);
198	pci_iounmap(pdev, priv->hw.iobase);
199	pci_iounmap(pdev, card->bridge_io);
200	pci_release_regions(pdev);
201	pci_disable_device(pdev);
202}
203
204static const struct pci_device_id orinoco_tmd_id_table[] = {
205	{0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,},      /* NDC and OEMs, e.g. pheecom */
206	{0,},
207};
208
209MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
210
211static struct pci_driver orinoco_tmd_driver = {
212	.name		= DRIVER_NAME,
213	.id_table	= orinoco_tmd_id_table,
214	.probe		= orinoco_tmd_init_one,
215	.remove		= orinoco_tmd_remove_one,
216	.suspend	= orinoco_pci_suspend,
217	.resume		= orinoco_pci_resume,
218};
219
220static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
221	" (Joerg Dorchain <joerg@dorchain.net>)";
222MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
223MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
224MODULE_LICENSE("Dual MPL/GPL");
225
226static int __init orinoco_tmd_init(void)
227{
228	printk(KERN_DEBUG "%s\n", version);
229	return pci_register_driver(&orinoco_tmd_driver);
230}
231
232static void __exit orinoco_tmd_exit(void)
233{
234	pci_unregister_driver(&orinoco_tmd_driver);
235}
236
237module_init(orinoco_tmd_init);
238module_exit(orinoco_tmd_exit);
239
240/*
241 * Local variables:
242 *  c-indent-level: 8
243 *  c-basic-offset: 8
244 *  tab-width: 8
245 * End:
246 */
247