[linux-2.6-block.git] / drivers / net / wireless / ath / ath9k / ahb.c

/*
 * Copyright (c) 2008-2011 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 <linux/module.h>
#include "ath9k.h"

static const struct platform_device_id ath9k_platform_id_table[] = {
	{
		.name = "ath9k",
		.driver_data = AR5416_AR9100_DEVID,
	},
	{
		.name = "ar933x_wmac",
		.driver_data = AR9300_DEVID_AR9330,
	},
	{
		.name = "ar934x_wmac",
		.driver_data = AR9300_DEVID_AR9340,
	},
	{
		.name = "qca955x_wmac",
		.driver_data = AR9300_DEVID_QCA955X,
	},
	{
		.name = "qca953x_wmac",
		.driver_data = AR9300_DEVID_AR953X,
	},
	{
		.name = "qca956x_wmac",
		.driver_data = AR9300_DEVID_QCA956X,
	},
	{},
};

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

static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
{
	ath_err(common, "%s: eeprom data has to be provided externally\n",
		__func__);
	return false;
}

static const struct ath_bus_ops ath_ahb_bus_ops  = {
	.ath_bus_type = ATH_AHB,
	.read_cachesize = ath_ahb_read_cachesize,
	.eeprom_read = ath_ahb_eeprom_read,
};

static int ath_ahb_probe(struct platform_device *pdev)
{
	void __iomem *mem;
	struct ath_softc *sc;
	struct ieee80211_hw *hw;
	struct resource *res;
	const struct platform_device_id *id = platform_get_device_id(pdev);
	int irq;
	int ret = 0;
	struct ath_hw *ah;
	char hw_name[64];

	if (!dev_get_platdata(&pdev->dev)) {
		dev_err(&pdev->dev, "no platform data specified\n");
		return -EINVAL;
	}

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

	mem = devm_ioremap_nocache(&pdev->dev, res->start, resource_size(res));
	if (mem == NULL) {
		dev_err(&pdev->dev, "ioremap failed\n");
		return -ENOMEM;
	}

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

	irq = res->start;

	ath9k_fill_chanctx_ops();
	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
	if (hw == NULL) {
		dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
		return -ENOMEM;
	}

	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->irq = irq;

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

	ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
	if (ret) {
		dev_err(&pdev->dev, "failed to initialize device\n");
		goto err_irq;
	}

	ah = sc->sc_ah;
	ath9k_hw_name(ah, hw_name, sizeof(hw_name));
	wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
		   hw_name, (unsigned long)mem, irq);

	return 0;

 err_irq:
	free_irq(irq, sc);
 err_free_hw:
	ieee80211_free_hw(hw);
	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;

		ath9k_deinit_device(sc);
		free_irq(sc->irq, sc);
		ieee80211_free_hw(sc->hw);
	}

	return 0;
}

static struct platform_driver ath_ahb_driver = {
	.probe      = ath_ahb_probe,
	.remove     = ath_ahb_remove,
	.driver		= {
		.name	= "ath9k",
	},
	.id_table    = ath9k_platform_id_table,
};

MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);

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	1	/*
5b68138e	2	* Copyright (c) 2008-2011 Atheros Communications Inc.
09329d37 GJ	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>
9d9779e7	21	#include <linux/module.h>
394cf0a1	22	#include "ath9k.h"
09329d37	23
0a6c9b1b	24	static const struct platform_device_id ath9k_platform_id_table[] = {
6f11c819 VT	25	{
	26	.name = "ath9k",
	27	.driver_data = AR5416_AR9100_DEVID,
	28	},
e9b7c591 GJ	29	{
	30	.name = "ar933x_wmac",
	31	.driver_data = AR9300_DEVID_AR9330,
	32	},
247eee0e VT	33	{
	34	.name = "ar934x_wmac",
	35	.driver_data = AR9300_DEVID_AR9340,
	36	},
9476f4d6 GJ	37	{
	38	.name = "qca955x_wmac",
	39	.driver_data = AR9300_DEVID_QCA955X,
	40	},
c08148bb SM	41	{
	42	.name = "qca953x_wmac",
	43	.driver_data = AR9300_DEVID_AR953X,
	44	},
2131fabb MP	45	{
	46	.name = "qca956x_wmac",
	47	.driver_data = AR9300_DEVID_QCA956X,
	48	},
6f11c819 VT	49	{},
	50	};
	51
09329d37	52	/* return bus cachesize in 4B word units */
5bb12791	53	static void ath_ahb_read_cachesize(struct ath_common common, int csz)
09329d37 GJ	54	{
	55	*csz = L1_CACHE_BYTES >> 2;
	56	}
	57
5bb12791	58	static bool ath_ahb_eeprom_read(struct ath_common common, u32 off, u16 data)
9dbeb91a	59	{
56398519 MB	60	ath_err(common, "%s: eeprom data has to be provided externally\n",
	61	__func__);
	62	return false;
9dbeb91a GJ	63	}
9dbeb91a GJ	64
8ca5a607	65	static const struct ath_bus_ops ath_ahb_bus_ops = {
497ad9ad	66	.ath_bus_type = ATH_AHB,
09329d37	67	.read_cachesize = ath_ahb_read_cachesize,
9dbeb91a	68	.eeprom_read = ath_ahb_eeprom_read,
09329d37 GJ	69	};
	70
	71	static int ath_ahb_probe(struct platform_device *pdev)
	72	{
	73	void __iomem *mem;
	74	struct ath_softc *sc;
	75	struct ieee80211_hw *hw;
	76	struct resource *res;
6f11c819	77	const struct platform_device_id *id = platform_get_device_id(pdev);
09329d37 GJ	78	int irq;
09329d37 GJ	79	int ret = 0;
cbe61d8a	80	struct ath_hw *ah;
f934c4d9	81	char hw_name[64];
09329d37	82
8f616c6d	83	if (!dev_get_platdata(&pdev->dev)) {
9dbeb91a	84	dev_err(&pdev->dev, "no platform data specified\n");
b81950b1	85	return -EINVAL;
9dbeb91a GJ	86	}
9dbeb91a GJ	87
09329d37 GJ	88	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	89	if (res == NULL) {
	90	dev_err(&pdev->dev, "no memory resource found\n");
b81950b1	91	return -ENXIO;
09329d37 GJ	92	}
09329d37 GJ	93
b81950b1	94	mem = devm_ioremap_nocache(&pdev->dev, res->start, resource_size(res));
09329d37 GJ	95	if (mem == NULL) {
09329d37 GJ	96	dev_err(&pdev->dev, "ioremap failed\n");
b81950b1	97	return -ENOMEM;
09329d37 GJ	98	}
	99
	100	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	101	if (res == NULL) {
	102	dev_err(&pdev->dev, "no IRQ resource found\n");
b81950b1	103	return -ENXIO;
09329d37 GJ	104	}
	105
	106	irq = res->start;
	107
cf9ae8fa	108	ath9k_fill_chanctx_ops();
9ac58615	109	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
09329d37 GJ	110	if (hw == NULL) {
09329d37 GJ	111	dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
b81950b1	112	return -ENOMEM;
09329d37 GJ	113	}
	114
	115	SET_IEEE80211_DEV(hw, &pdev->dev);
	116	platform_set_drvdata(pdev, hw);
	117
9ac58615	118	sc = hw->priv;
09329d37 GJ	119	sc->hw = hw;
	120	sc->dev = &pdev->dev;
	121	sc->mem = mem;
09329d37 GJ	122	sc->irq = irq;
09329d37 GJ	123
285f2dda	124	ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
580171f7	125	if (ret) {
285f2dda	126	dev_err(&pdev->dev, "request_irq failed\n");
09329d37 GJ	127	goto err_free_hw;
	128	}
	129
eb93e891	130	ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
09329d37	131	if (ret) {
285f2dda S	132	dev_err(&pdev->dev, "failed to initialize device\n");
285f2dda S	133	goto err_irq;
09329d37 GJ	134	}
	135
	136	ah = sc->sc_ah;
f934c4d9	137	ath9k_hw_name(ah, hw_name, sizeof(hw_name));
c96c31e4 JP	138	wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
c96c31e4 JP	139	hw_name, (unsigned long)mem, irq);
09329d37 GJ	140
	141	return 0;
	142
285f2dda S	143	err_irq:
285f2dda S	144	free_irq(irq, sc);
09329d37 GJ	145	err_free_hw:
09329d37 GJ	146	ieee80211_free_hw(hw);
09329d37 GJ	147	return ret;
	148	}
	149
	150	static int ath_ahb_remove(struct platform_device *pdev)
	151	{
	152	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
	153
	154	if (hw) {
9ac58615	155	struct ath_softc *sc = hw->priv;
09329d37	156
285f2dda S	157	ath9k_deinit_device(sc);
	158	free_irq(sc->irq, sc);
	159	ieee80211_free_hw(sc->hw);
09329d37 GJ	160	}
	161
	162	return 0;
	163	}
	164
	165	static struct platform_driver ath_ahb_driver = {
	166	.probe = ath_ahb_probe,
	167	.remove = ath_ahb_remove,
	168	.driver = {
	169	.name = "ath9k",
09329d37	170	},
6f11c819	171	.id_table = ath9k_platform_id_table,
09329d37 GJ	172	};
09329d37 GJ	173
6f11c819 VT	174	MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);
6f11c819 VT	175
09329d37 GJ	176	int ath_ahb_init(void)
	177	{
	178	return platform_driver_register(&ath_ahb_driver);
	179	}
	180
	181	void ath_ahb_exit(void)
	182	{
	183	platform_driver_unregister(&ath_ahb_driver);
	184	}