Release 4.11 drivers/net/wireless/intersil/orinoco/airport.c

/* airport.c
 *
 * A driver for "Hermes" chipset based Apple Airport wireless
 * card.
 *
 * Copyright notice & release notes in file main.c
 *
 * Note specific to airport stub:
 *
 *  0.05 : first version of the new split driver
 *  0.06 : fix possible hang on powerup, add sleep support
 */


#define DRIVER_NAME "airport"

#define PFX DRIVER_NAME ": "

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <asm/pmac_feature.h>

#include "orinoco.h"


#define AIRPORT_IO_LEN	(0x1000)	
/* one page */


struct airport {
	
struct macio_dev *mdev;
	
void __iomem *vaddr;
	
unsigned int irq;
	
int irq_requested;
	
int ndev_registered;
};


static int

airport_suspend(struct macio_dev *mdev, pm_message_t state)
{
	struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
	struct net_device *dev = priv->ndev;
	struct airport *card = priv->card;
	unsigned long flags;
	int err;

	printk(KERN_DEBUG "%s: Airport entering sleep mode\n", dev->name);

	err = orinoco_lock(priv, &flags);
	if (err) {
		printk(KERN_ERR "%s: hw_unavailable on PBOOK_SLEEP_NOW\n",
		       dev->name);
		return 0;
	}

	orinoco_down(priv);
	orinoco_unlock(priv, &flags);

	disable_irq(card->irq);
	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
			  macio_get_of_node(mdev), 0, 0);

	return 0;
}

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David Gibson
51
39.23%
2
22.22%
Linus Torvalds
35
26.92%
1
11.11%
Benjamin Herrenschmidt
20
15.38%
1
11.11%
David Kilroy
19
14.62%
3
33.33%
Jeff Garzik
4
3.08%
1
11.11%
Pavel Machek
1
0.77%
1
11.11%
Total
130
100.00%
9
100.00%


static int

airport_resume(struct macio_dev *mdev)
{
	struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
	struct net_device *dev = priv->ndev;
	struct airport *card = priv->card;
	unsigned long flags;
	int err;

	printk(KERN_DEBUG "%s: Airport waking up\n", dev->name);

	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
			  macio_get_of_node(mdev), 0, 1);
	msleep(200);

	enable_irq(card->irq);

	priv->hw.ops->lock_irqsave(&priv->lock, &flags);
	err = orinoco_up(priv);
	priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);

	return err;
}

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David Kilroy
36
27.48%
4
40.00%
Benjamin Herrenschmidt
34
25.95%
1
10.00%
Linus Torvalds
28
21.37%
1
10.00%
David Gibson
27
20.61%
2
20.00%
Jeff Garzik
4
3.05%
1
10.00%
Nishanth Aravamudan
2
1.53%
1
10.00%
Total
131
100.00%
10
100.00%


static int

airport_detach(struct macio_dev *mdev)
{
	struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
	struct airport *card = priv->card;

	if (card->ndev_registered)
		orinoco_if_del(priv);
	card->ndev_registered = 0;

	if (card->irq_requested)
		free_irq(card->irq, priv);
	card->irq_requested = 0;

	if (card->vaddr)
		iounmap(card->vaddr);
	card->vaddr = NULL;

	macio_release_resource(mdev, 0);

	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
			  macio_get_of_node(mdev), 0, 0);
	ssleep(1);

	macio_set_drvdata(mdev, NULL);
	free_orinocodev(priv);

	return 0;
}

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Benjamin Herrenschmidt
84
63.16%
1
9.09%
Linus Torvalds
20
15.04%
1
9.09%
David Gibson
11
8.27%
3
27.27%
Jeff Garzik
8
6.02%
1
9.09%
David Kilroy
7
5.26%
3
27.27%
Nishanth Aravamudan
2
1.50%
1
9.09%
Al Viro
1
0.75%
1
9.09%
Total
133
100.00%
11
100.00%



static int airport_hard_reset(struct orinoco_private *priv)
{
	/* It would be nice to power cycle the Airport for a real hard
         * reset, but for some reason although it appears to
         * re-initialize properly, it falls in a screaming heap
         * shortly afterwards. */
#if 0
	struct airport *card = priv->card;

	/* Vitally important.  If we don't do this it seems we get an
         * interrupt somewhere during the power cycle, since
         * hw_unavailable is already set it doesn't get ACKed, we get
         * into an interrupt loop and the PMU decides to turn us
         * off. */
	disable_irq(card->irq);

        pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
                          macio_get_of_node(card->mdev), 0, 0);
        ssleep(1);
        pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
                          macio_get_of_node(card->mdev), 0, 1);
        ssleep(1);

        enable_irq(card->irq);
        ssleep(1);
#endif

	return 0;
}

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Benjamin Herrenschmidt
20
86.96%
1
33.33%
David Kilroy
2
8.70%
1
33.33%
Michael Opdenacker
1
4.35%
1
33.33%
Total
23
100.00%
3
100.00%


static int

airport_attach(struct macio_dev *mdev, const struct of_device_id *match)
{
	struct orinoco_private *priv;
	struct airport *card;
	unsigned long phys_addr;
	struct hermes *hw;

	if (macio_resource_count(mdev) < 1 || macio_irq_count(mdev) < 1) {
		printk(KERN_ERR PFX "Wrong interrupt/addresses in OF tree\n");
		return -ENODEV;
	}

	/* Allocate space for private device-specific data */
	priv = alloc_orinocodev(sizeof(*card), &mdev->ofdev.dev,
				airport_hard_reset, NULL);
	if (!priv) {
		printk(KERN_ERR PFX "Cannot allocate network device\n");
		return -ENODEV;
	}
	card = priv->card;

	hw = &priv->hw;
	card->mdev = mdev;

	if (macio_request_resource(mdev, 0, DRIVER_NAME)) {
		printk(KERN_ERR PFX "can't request IO resource !\n");
		free_orinocodev(priv);
		return -EBUSY;
	}

	macio_set_drvdata(mdev, priv);

	/* Setup interrupts & base address */
	card->irq = macio_irq(mdev, 0);
	phys_addr = macio_resource_start(mdev, 0);  /* Physical address */
	printk(KERN_DEBUG PFX "Physical address %lx\n", phys_addr);
	card->vaddr = ioremap(phys_addr, AIRPORT_IO_LEN);
	if (!card->vaddr) {
		printk(KERN_ERR PFX "ioremap() failed\n");
		goto failed;
	}

	hermes_struct_init(hw, card->vaddr, HERMES_16BIT_REGSPACING);

	/* Power up card */
	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
			  macio_get_of_node(mdev), 0, 1);
	ssleep(1);

	/* Reset it before we get the interrupt */
	hw->ops->init(hw);

	if (request_irq(card->irq, orinoco_interrupt, 0, DRIVER_NAME, priv)) {
		printk(KERN_ERR PFX "Couldn't get IRQ %d\n", card->irq);
		goto failed;
	}
	card->irq_requested = 1;

	/* Initialise the main driver */
	if (orinoco_init(priv) != 0) {
		printk(KERN_ERR PFX "orinoco_init() failed\n");
		goto failed;
	}

	/* Register an interface with the stack */
	if (orinoco_if_add(priv, phys_addr, card->irq, NULL) != 0) {
		printk(KERN_ERR PFX "orinoco_if_add() failed\n");
		goto failed;
	}
	card->ndev_registered = 1;
	return 0;
 failed:
	airport_detach(mdev);
	return -ENODEV;
}				
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Benjamin Herrenschmidt
87
23.90%
1
5.26%
David Gibson
70
19.23%
5
26.32%
David Kilroy
59
16.21%
7
36.84%
Jeff Garzik
29
7.97%
1
5.26%
Nishanth Aravamudan
2
0.55%
1
5.26%
Pavel Roskin
2
0.55%
1
5.26%
Jeff Mahoney
1
0.27%
1
5.26%
Total
364
100.00%
19
100.00%

/* airport_attach */



static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
	" (Benjamin Herrenschmidt <benh@kernel.crashing.org>)";
MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>");
MODULE_DESCRIPTION("Driver for the Apple Airport wireless card.");
MODULE_LICENSE("Dual MPL/GPL");


static const struct of_device_id airport_match[] = {
	{
	.name		= "radio",
        },
	{},
};

MODULE_DEVICE_TABLE(of, airport_match);


static struct macio_driver airport_driver = {
	.driver = {
		.name		= DRIVER_NAME,
		.owner		= THIS_MODULE,
		.of_match_table	= airport_match,
        },
	.probe		= airport_attach,
	.remove		= airport_detach,
	.suspend	= airport_suspend,
	.resume		= airport_resume,
};


static int __init

init_airport(void)
{
	printk(KERN_DEBUG "%s\n", version);

	return macio_register_driver(&airport_driver);
}

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4
16.67%
1
33.33%
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24
100.00%
3
100.00%


static void __exit

exit_airport(void)
{
	macio_unregister_driver(&airport_driver);
}

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11
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1
33.33%
Benjamin Herrenschmidt
3
20.00%
1
33.33%
Pavel Roskin
1
6.67%
1
33.33%
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15
100.00%
3
100.00%


module_init(init_airport);

module_exit(exit_airport);
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6.25%
Linus Torvalds
265
26.88%
3
9.38%
David Gibson
208
21.10%
6
18.75%
David Kilroy
128
12.98%
10
31.25%
Jeff Garzik
47
4.77%
1
3.12%
Jeff Mahoney
10
1.01%
1
3.12%
Nishanth Aravamudan
6
0.61%
1
3.12%
Pavel Roskin
4
0.41%
3
9.38%
Al Viro
2
0.20%
2
6.25%
Pavel Machek
1
0.10%
1
3.12%
Fabian Frederick
1
0.10%
1
3.12%
Michael Opdenacker
1
0.10%
1
3.12%
Total
986
100.00%
32
100.00%
Directory: drivers/net/wireless/intersil/orinoco

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