[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / ath9k / ahb.c

/*
 * Copyright (c) 2008 Atheros Communications Inc.
 * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
 * Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/nl80211.h>
#include <linux/platform_device.h>
#include "core.h"
#include "reg.h"
#include "hw.h"

/* return bus cachesize in 4B word units */
static void ath_ahb_read_cachesize(struct ath_softc *sc, int *csz)
{
	*csz = L1_CACHE_BYTES >> 2;
}

static void ath_ahb_cleanup(struct ath_softc *sc)
{
	iounmap(sc->mem);
}

static struct ath_bus_ops ath_ahb_bus_ops  = {
	.read_cachesize = ath_ahb_read_cachesize,
	.cleanup = ath_ahb_cleanup,
};

static int ath_ahb_probe(struct platform_device *pdev)
{
	void __iomem *mem;
	struct ath_softc *sc;
	struct ieee80211_hw *hw;
	struct resource *res;
	int irq;
	int ret = 0;
	struct ath_hal *ah;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (res == NULL) {
		dev_err(&pdev->dev, "no memory resource found\n");
		ret = -ENXIO;
		goto err_out;
	}

	mem = ioremap_nocache(res->start, res->end - res->start + 1);
	if (mem == NULL) {
		dev_err(&pdev->dev, "ioremap failed\n");
		ret = -ENOMEM;
		goto err_out;
	}

	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (res == NULL) {
		dev_err(&pdev->dev, "no IRQ resource found\n");
		ret = -ENXIO;
		goto err_iounmap;
	}

	irq = res->start;

	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
	if (hw == NULL) {
		dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
		ret = -ENOMEM;
		goto err_iounmap;
	}

	SET_IEEE80211_DEV(hw, &pdev->dev);
	platform_set_drvdata(pdev, hw);

	sc = hw->priv;
	sc->hw = hw;
	sc->dev = &pdev->dev;
	sc->mem = mem;
	sc->bus_ops = &ath_ahb_bus_ops;
	sc->irq = irq;

	ret = ath_attach(AR5416_AR9100_DEVID, sc);
	if (ret != 0) {
		dev_err(&pdev->dev, "failed to attach device, err=%d\n", ret);
		ret = -ENODEV;
		goto err_free_hw;
	}

	ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
	if (ret) {
		dev_err(&pdev->dev, "request_irq failed, err=%d\n", ret);
		ret = -EIO;
		goto err_detach;
	}

	ah = sc->sc_ah;
	printk(KERN_INFO
	       "%s: Atheros AR%s MAC/BB Rev:%x, "
	       "AR%s RF Rev:%x, mem=0x%lx, irq=%d\n",
	       wiphy_name(hw->wiphy),
	       ath_mac_bb_name(ah->ah_macVersion),
	       ah->ah_macRev,
	       ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
	       ah->ah_phyRev,
	       (unsigned long)mem, irq);

	return 0;

 err_detach:
	ath_detach(sc);
 err_free_hw:
	ieee80211_free_hw(hw);
	platform_set_drvdata(pdev, NULL);
 err_iounmap:
	iounmap(mem);
 err_out:
	return ret;
}

static int ath_ahb_remove(struct platform_device *pdev)
{
	struct ieee80211_hw *hw = platform_get_drvdata(pdev);

	if (hw) {
		struct ath_softc *sc = hw->priv;

		ath_cleanup(sc);
		platform_set_drvdata(pdev, NULL);
	}

	return 0;
}

static struct platform_driver ath_ahb_driver = {
	.probe      = ath_ahb_probe,
	.remove     = ath_ahb_remove,
	.driver		= {
		.name	= "ath9k",
		.owner	= THIS_MODULE,
	},
};

int ath_ahb_init(void)
{
	return platform_driver_register(&ath_ahb_driver);
}

void ath_ahb_exit(void)
{
	platform_driver_unregister(&ath_ahb_driver);
}
Commit	Line	Data
09329d37 GJ	1	/*
	2	* Copyright (c) 2008 Atheros Communications Inc.
	3	* Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
	4	* Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org>
	5	*
	6	* Permission to use, copy, modify, and/or distribute this software for any
	7	* purpose with or without fee is hereby granted, provided that the above
	8	* copyright notice and this permission notice appear in all copies.
	9	*
	10	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	11	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	12	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	13	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	14	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	15	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	16	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	17	*/
	18
	19	#include <linux/nl80211.h>
	20	#include <linux/platform_device.h>
	21	#include "core.h"
	22	#include "reg.h"
	23	#include "hw.h"
	24
	25	/* return bus cachesize in 4B word units */
	26	static void ath_ahb_read_cachesize(struct ath_softc sc, int csz)
	27	{
	28	*csz = L1_CACHE_BYTES >> 2;
	29	}
	30
	31	static void ath_ahb_cleanup(struct ath_softc *sc)
	32	{
	33	iounmap(sc->mem);
	34	}
	35
	36	static struct ath_bus_ops ath_ahb_bus_ops = {
	37	.read_cachesize = ath_ahb_read_cachesize,
	38	.cleanup = ath_ahb_cleanup,
	39	};
	40
	41	static int ath_ahb_probe(struct platform_device *pdev)
	42	{
	43	void __iomem *mem;
	44	struct ath_softc *sc;
	45	struct ieee80211_hw *hw;
	46	struct resource *res;
	47	int irq;
	48	int ret = 0;
	49	struct ath_hal *ah;
	50
	51	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	52	if (res == NULL) {
	53	dev_err(&pdev->dev, "no memory resource found\n");
	54	ret = -ENXIO;
	55	goto err_out;
	56	}
	57
	58	mem = ioremap_nocache(res->start, res->end - res->start + 1);
	59	if (mem == NULL) {
	60	dev_err(&pdev->dev, "ioremap failed\n");
	61	ret = -ENOMEM;
	62	goto err_out;
	63	}
	64
65	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
66	if (res == NULL) {
67	dev_err(&pdev->dev, "no IRQ resource found\n");
68	ret = -ENXIO;
69	goto err_iounmap;
70	}
71
72	irq = res->start;
73
74	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
75	if (hw == NULL) {
76	dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
77	ret = -ENOMEM;
78	goto err_iounmap;
79	}
80
81	SET_IEEE80211_DEV(hw, &pdev->dev);
82	platform_set_drvdata(pdev, hw);
83
84	sc = hw->priv;
85	sc->hw = hw;
86	sc->dev = &pdev->dev;
87	sc->mem = mem;
88	sc->bus_ops = &ath_ahb_bus_ops;
89	sc->irq = irq;
90
91	ret = ath_attach(AR5416_AR9100_DEVID, sc);
92	if (ret != 0) {
93	dev_err(&pdev->dev, "failed to attach device, err=%d\n", ret);
94	ret = -ENODEV;
95	goto err_free_hw;
96	}
97
98	ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
99	if (ret) {
100	dev_err(&pdev->dev, "request_irq failed, err=%d\n", ret);
101	ret = -EIO;
102	goto err_detach;
103	}
104
105	ah = sc->sc_ah;
106	printk(KERN_INFO
107	"%s: Atheros AR%s MAC/BB Rev:%x, "
108	"AR%s RF Rev:%x, mem=0x%lx, irq=%d\n",
109	wiphy_name(hw->wiphy),
110	ath_mac_bb_name(ah->ah_macVersion),
111	ah->ah_macRev,
112	ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
113	ah->ah_phyRev,
114	(unsigned long)mem, irq);
115
116	return 0;
117
118	err_detach:
119	ath_detach(sc);
120	err_free_hw:
121	ieee80211_free_hw(hw);
122	platform_set_drvdata(pdev, NULL);
123	err_iounmap:
124	iounmap(mem);
125	err_out:
126	return ret;
127	}
128
129	static int ath_ahb_remove(struct platform_device *pdev)
130	{
131	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
132
133	if (hw) {
134	struct ath_softc *sc = hw->priv;
135
136	ath_cleanup(sc);
137	platform_set_drvdata(pdev, NULL);
138	}
139
140	return 0;
141	}
142
143	static struct platform_driver ath_ahb_driver = {
144	.probe = ath_ahb_probe,
145	.remove = ath_ahb_remove,
146	.driver = {
147	.name = "ath9k",
148	.owner = THIS_MODULE,
149	},
150	};
151
152	int ath_ahb_init(void)
153	{
154	return platform_driver_register(&ath_ahb_driver);
155	}
156
157	void ath_ahb_exit(void)
158	{
159	platform_driver_unregister(&ath_ahb_driver);
160	}