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  */
orinoco_tmd_cor_reset(struct orinoco_private * priv)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 
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 
orinoco_tmd_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)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 
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 
orinoco_tmd_remove_one(struct pci_dev * pdev)190 static 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 
204 static 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 
209 MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
210 
211 static 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 	.driver.pm	= &orinoco_pci_pm_ops,
217 };
218 
219 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
220 	" (Joerg Dorchain <joerg@dorchain.net>)";
221 MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
222 MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
223 MODULE_LICENSE("Dual MPL/GPL");
224 
orinoco_tmd_init(void)225 static int __init orinoco_tmd_init(void)
226 {
227 	printk(KERN_DEBUG "%s\n", version);
228 	return pci_register_driver(&orinoco_tmd_driver);
229 }
230 
orinoco_tmd_exit(void)231 static void __exit orinoco_tmd_exit(void)
232 {
233 	pci_unregister_driver(&orinoco_tmd_driver);
234 }
235 
236 module_init(orinoco_tmd_init);
237 module_exit(orinoco_tmd_exit);
238