[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / orinoco_tmd.c

/* orinoco_tmd.c
 *
 * Driver for Prism II devices which would usually be driven by orinoco_cs,
 * but are connected to the PCI bus by a TMD7160. 
 *
 * Copyright (C) 2003 Joerg Dorchain <joerg AT dorchain.net>
 * based heavily upon orinoco_plx.c Copyright (C) 2001 Daniel Barlow
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License
 * at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and
 * limitations under the License.
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License version 2 (the "GPL"), in
 * which case the provisions of the GPL are applicable instead of the
 * above.  If you wish to allow the use of your version of this file
 * only under the terms of the GPL and not to allow others to use your
 * version of this file under the MPL, indicate your decision by
 * deleting the provisions above and replace them with the notice and
 * other provisions required by the GPL.  If you do not delete the
 * provisions above, a recipient may use your version of this file
 * under either the MPL or the GPL.
 *
 * The actual driving is done by orinoco.c, this is just resource
 * allocation stuff.
 *
 * This driver is modeled after the orinoco_plx driver. The main
 * difference is that the TMD chip has only IO port ranges and doesn't
 * provide access to the PCMCIA attribute space.
 *
 * Pheecom sells cards with the TMD chip as "ASIC version"
 */

#define DRIVER_NAME "orinoco_tmd"
#define PFX DRIVER_NAME ": "

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <pcmcia/cisreg.h>

#include "orinoco.h"
#include "orinoco_pci.h"

#define COR_VALUE	(COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
#define COR_RESET     (0x80)	/* reset bit in the COR register */
#define TMD_RESET_TIME	(500)	/* milliseconds */

/*
 * Do a soft reset of the card using the Configuration Option Register
 */
static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
{
	hermes_t *hw = &priv->hw;
	struct orinoco_pci_card *card = priv->card;
	unsigned long timeout;
	u16 reg;

	iowrite8(COR_VALUE | COR_RESET, card->bridge_io);
	mdelay(1);

	iowrite8(COR_VALUE, card->bridge_io);
	mdelay(1);

	/* Just in case, wait more until the card is no longer busy */
	timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
		mdelay(1);
		reg = hermes_read_regn(hw, CMD);
	}

	/* Still busy? */
	if (reg & HERMES_CMD_BUSY) {
		printk(KERN_ERR PFX "Busy timeout\n");
		return -ETIMEDOUT;
	}

	return 0;
}


static int orinoco_tmd_init_one(struct pci_dev *pdev,
				const struct pci_device_id *ent)
{
	int err;
	struct orinoco_private *priv;
	struct orinoco_pci_card *card;
	struct net_device *dev;
	void __iomem *hermes_io, *bridge_io;

	err = pci_enable_device(pdev);
	if (err) {
		printk(KERN_ERR PFX "Cannot enable PCI device\n");
		return err;
	}

	err = pci_request_regions(pdev, DRIVER_NAME);
	if (err) {
		printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
		goto fail_resources;
	}

	bridge_io = pci_iomap(pdev, 1, 0);
	if (!bridge_io) {
		printk(KERN_ERR PFX "Cannot map bridge registers\n");
		err = -EIO;
		goto fail_map_bridge;
	}

	hermes_io = pci_iomap(pdev, 2, 0);
	if (!hermes_io) {
		printk(KERN_ERR PFX "Cannot map chipset registers\n");
		err = -EIO;
		goto fail_map_hermes;
	}

	/* Allocate network device */
	dev = alloc_orinocodev(sizeof(*card), orinoco_tmd_cor_reset);
	if (!dev) {
		printk(KERN_ERR PFX "Cannot allocate network device\n");
		err = -ENOMEM;
		goto fail_alloc;
	}

	priv = netdev_priv(dev);
	card = priv->card;
	card->bridge_io = bridge_io;
	SET_MODULE_OWNER(dev);
	SET_NETDEV_DEV(dev, &pdev->dev);

	hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);

	err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
			  dev->name, dev);
	if (err) {
		printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
		err = -EBUSY;
		goto fail_irq;
	}

	err = orinoco_tmd_cor_reset(priv);
	if (err) {
		printk(KERN_ERR PFX "Initial reset failed\n");
		goto fail;
	}

	err = register_netdev(dev);
	if (err) {
		printk(KERN_ERR PFX "Cannot register network device\n");
		goto fail;
	}

	pci_set_drvdata(pdev, dev);
	printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s\n", dev->name,
	       pci_name(pdev));

	return 0;

 fail:
	free_irq(pdev->irq, dev);

 fail_irq:
	pci_set_drvdata(pdev, NULL);
	free_orinocodev(dev);

 fail_alloc:
	pci_iounmap(pdev, hermes_io);

 fail_map_hermes:
	pci_iounmap(pdev, bridge_io);

 fail_map_bridge:
	pci_release_regions(pdev);

 fail_resources:
	pci_disable_device(pdev);

	return err;
}

static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev)
{
	struct net_device *dev = pci_get_drvdata(pdev);
	struct orinoco_private *priv = dev->priv;
	struct orinoco_pci_card *card = priv->card;

	unregister_netdev(dev);
	free_irq(pdev->irq, dev);
	pci_set_drvdata(pdev, NULL);
	free_orinocodev(dev);
	pci_iounmap(pdev, priv->hw.iobase);
	pci_iounmap(pdev, card->bridge_io);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
}

static struct pci_device_id orinoco_tmd_id_table[] = {
	{0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,},      /* NDC and OEMs, e.g. pheecom */
	{0,},
};

MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);

static struct pci_driver orinoco_tmd_driver = {
	.name		= DRIVER_NAME,
	.id_table	= orinoco_tmd_id_table,
	.probe		= orinoco_tmd_init_one,
	.remove		= __devexit_p(orinoco_tmd_remove_one),
	.suspend	= orinoco_pci_suspend,
	.resume		= orinoco_pci_resume,
};

static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
	" (Joerg Dorchain <joerg@dorchain.net>)";
MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
MODULE_LICENSE("Dual MPL/GPL");

static int __init orinoco_tmd_init(void)
{
	printk(KERN_DEBUG "%s\n", version);
	return pci_register_driver(&orinoco_tmd_driver);
}

static void __exit orinoco_tmd_exit(void)
{
	pci_unregister_driver(&orinoco_tmd_driver);
}

module_init(orinoco_tmd_init);
module_exit(orinoco_tmd_exit);

/*
 * Local variables:
 *  c-indent-level: 8
 *  c-basic-offset: 8
 *  tab-width: 8
 * End:
 */
Commit	Line	Data
1da177e4	1	/* orinoco_tmd.c
b884c872	2	*
1da177e4 LT	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.
1da177e4 LT	29	*
	30	* The actual driving is done by orinoco.c, this is just resource
	31	* allocation stuff.
	32	*
	33	* This driver is modeled after the orinoco_plx driver. The main
dc3437d2 PR	34	* difference is that the TMD chip has only IO port ranges and doesn't
dc3437d2 PR	35	* provide access to the PCMCIA attribute space.
1da177e4 LT	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
1da177e4 LT	43	#include <linux/module.h>
	44	#include <linux/kernel.h>
	45	#include <linux/init.h>
ef846bf0	46	#include <linux/delay.h>
1da177e4	47	#include <linux/pci.h>
1da177e4 LT	48	#include <pcmcia/cisreg.h>
1da177e4 LT	49
1da177e4	50	#include "orinoco.h"
b884c872	51	#include "orinoco_pci.h"
1da177e4 LT	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
1da177e4 LT	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	hermes_t *hw = &priv->hw;
b884c872	63	struct orinoco_pci_card *card = priv->card;
1da177e4 LT	64	unsigned long timeout;
	65	u16 reg;
	66
b884c872	67	iowrite8(COR_VALUE \| COR_RESET, card->bridge_io);
1da177e4 LT	68	mdelay(1);
1da177e4 LT	69
b884c872	70	iowrite8(COR_VALUE, card->bridge_io);
1da177e4 LT	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
b884c872	81	/* Still busy? */
1da177e4 LT	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	{
b884c872 PR	94	int err;
	95	struct orinoco_private *priv;
	96	struct orinoco_pci_card *card;
	97	struct net_device *dev;
	98	void __iomem hermes_io, bridge_io;
1da177e4 LT	99
	100	err = pci_enable_device(pdev);
	101	if (err) {
	102	printk(KERN_ERR PFX "Cannot enable PCI device\n");
	103	return err;
	104	}
	105
	106	err = pci_request_regions(pdev, DRIVER_NAME);
b884c872	107	if (err) {
1da177e4 LT	108	printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
	109	goto fail_resources;
	110	}
	111
b884c872 PR	112	bridge_io = pci_iomap(pdev, 1, 0);
	113	if (!bridge_io) {
	114	printk(KERN_ERR PFX "Cannot map bridge registers\n");
	115	err = -EIO;
	116	goto fail_map_bridge;
	117	}
	118
	119	hermes_io = pci_iomap(pdev, 2, 0);
	120	if (!hermes_io) {
	121	printk(KERN_ERR PFX "Cannot map chipset registers\n");
	122	err = -EIO;
	123	goto fail_map_hermes;
1da177e4 LT	124	}
	125
	126	/* Allocate network device */
	127	dev = alloc_orinocodev(sizeof(*card), orinoco_tmd_cor_reset);
b884c872	128	if (!dev) {
1da177e4 LT	129	printk(KERN_ERR PFX "Cannot allocate network device\n");
	130	err = -ENOMEM;
	131	goto fail_alloc;
	132	}
	133
	134	priv = netdev_priv(dev);
	135	card = priv->card;
b884c872	136	card->bridge_io = bridge_io;
1da177e4 LT	137	SET_MODULE_OWNER(dev);
	138	SET_NETDEV_DEV(dev, &pdev->dev);
	139
b884c872	140	hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
1da177e4	141
1fb9df5d	142	err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
1da177e4 LT	143	dev->name, dev);
	144	if (err) {
	145	printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
	146	err = -EBUSY;
	147	goto fail_irq;
	148	}
1da177e4 LT	149
	150	err = orinoco_tmd_cor_reset(priv);
	151	if (err) {
	152	printk(KERN_ERR PFX "Initial reset failed\n");
	153	goto fail;
	154	}
	155
	156	err = register_netdev(dev);
	157	if (err) {
	158	printk(KERN_ERR PFX "Cannot register network device\n");
	159	goto fail;
	160	}
	161
	162	pci_set_drvdata(pdev, dev);
461c078c PR	163	printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s\n", dev->name,
461c078c PR	164	pci_name(pdev));
1da177e4 LT	165
	166	return 0;
	167
	168	fail:
	169	free_irq(pdev->irq, dev);
	170
	171	fail_irq:
	172	pci_set_drvdata(pdev, NULL);
	173	free_orinocodev(dev);
	174
	175	fail_alloc:
b884c872	176	pci_iounmap(pdev, hermes_io);
1da177e4	177
b884c872 PR	178	fail_map_hermes:
	179	pci_iounmap(pdev, bridge_io);
	180
	181	fail_map_bridge:
1da177e4 LT	182	pci_release_regions(pdev);
	183
	184	fail_resources:
	185	pci_disable_device(pdev);
	186
	187	return err;
	188	}
	189
	190	static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev)
	191	{
	192	struct net_device *dev = pci_get_drvdata(pdev);
	193	struct orinoco_private *priv = dev->priv;
b884c872	194	struct orinoco_pci_card *card = priv->card;
1da177e4 LT	195
1da177e4 LT	196	unregister_netdev(dev);
461c078c	197	free_irq(pdev->irq, dev);
1da177e4 LT	198	pci_set_drvdata(pdev, NULL);
	199	free_orinocodev(dev);
	200	pci_iounmap(pdev, priv->hw.iobase);
b884c872	201	pci_iounmap(pdev, card->bridge_io);
1da177e4 LT	202	pci_release_regions(pdev);
	203	pci_disable_device(pdev);
	204	}
	205
b884c872	206	static struct pci_device_id orinoco_tmd_id_table[] = {
1da177e4 LT	207	{0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,}, /* NDC and OEMs, e.g. pheecom */
	208	{0,},
	209	};
	210
b884c872	211	MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
1da177e4 LT	212
	213	static struct pci_driver orinoco_tmd_driver = {
	214	.name = DRIVER_NAME,
b884c872	215	.id_table = orinoco_tmd_id_table,
1da177e4 LT	216	.probe = orinoco_tmd_init_one,
1da177e4 LT	217	.remove = __devexit_p(orinoco_tmd_remove_one),
b884c872 PR	218	.suspend = orinoco_pci_suspend,
b884c872 PR	219	.resume = orinoco_pci_resume,
1da177e4 LT	220	};
	221
	222	static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
	223	" (Joerg Dorchain <joerg@dorchain.net>)";
	224	MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
	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);
29917620	231	return pci_register_driver(&orinoco_tmd_driver);
1da177e4 LT	232	}
	233
	234	static void __exit orinoco_tmd_exit(void)
	235	{
	236	pci_unregister_driver(&orinoco_tmd_driver);
1da177e4 LT	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	*/