Release 4.11 drivers/net/wireless/ralink/rt2x00/rt2x00pci.c

/*
        Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
        <http://rt2x00.serialmonkey.com>

        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; either version 2 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

/*
        Module: rt2x00pci
        Abstract: rt2x00 generic pci device routines.
 */

#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/slab.h>

#include "rt2x00.h"
#include "rt2x00pci.h"

/*
 * PCI driver handlers.
 */


static void rt2x00pci_free_reg(struct rt2x00_dev *rt2x00dev)
{
	kfree(rt2x00dev->rf);
	rt2x00dev->rf = NULL;

	kfree(rt2x00dev->eeprom);
	rt2x00dev->eeprom = NULL;

	if (rt2x00dev->csr.base) {
		iounmap(rt2x00dev->csr.base);
		rt2x00dev->csr.base = NULL;
	}
}

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static int rt2x00pci_alloc_reg(struct rt2x00_dev *rt2x00dev)
{
	struct pci_dev *pci_dev = to_pci_dev(rt2x00dev->dev);

	rt2x00dev->csr.base = pci_ioremap_bar(pci_dev, 0);
	if (!rt2x00dev->csr.base)
		goto exit;

	rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
	if (!rt2x00dev->eeprom)
		goto exit;

	rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
	if (!rt2x00dev->rf)
		goto exit;

	return 0;

exit:
	rt2x00_probe_err("Failed to allocate registers\n");

	rt2x00pci_free_reg(rt2x00dev);

	return -ENOMEM;
}

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2
1.71%
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int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops)
{
	struct ieee80211_hw *hw;
	struct rt2x00_dev *rt2x00dev;
	int retval;
	u16 chip;

	retval = pci_enable_device(pci_dev);
	if (retval) {
		rt2x00_probe_err("Enable device failed\n");
		return retval;
	}

	retval = pci_request_regions(pci_dev, pci_name(pci_dev));
	if (retval) {
		rt2x00_probe_err("PCI request regions failed\n");
		goto exit_disable_device;
	}

	pci_set_master(pci_dev);

	if (pci_set_mwi(pci_dev))
		rt2x00_probe_err("MWI not available\n");

	if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32))) {
		rt2x00_probe_err("PCI DMA not supported\n");
		retval = -EIO;
		goto exit_release_regions;
	}

	hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
	if (!hw) {
		rt2x00_probe_err("Failed to allocate hardware\n");
		retval = -ENOMEM;
		goto exit_release_regions;
	}

	pci_set_drvdata(pci_dev, hw);

	rt2x00dev = hw->priv;
	rt2x00dev->dev = &pci_dev->dev;
	rt2x00dev->ops = ops;
	rt2x00dev->hw = hw;
	rt2x00dev->irq = pci_dev->irq;
	rt2x00dev->name = ops->name;

	if (pci_is_pcie(pci_dev))
		rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
	else
		rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI);

	retval = rt2x00pci_alloc_reg(rt2x00dev);
	if (retval)
		goto exit_free_device;

	/*
         * Because rt3290 chip use different efuse offset to read efuse data.
         * So before read efuse it need to indicate it is the
         * rt3290 or not.
         */
	pci_read_config_word(pci_dev, PCI_DEVICE_ID, &chip);
	rt2x00dev->chip.rt = chip;

	retval = rt2x00lib_probe_dev(rt2x00dev);
	if (retval)
		goto exit_free_reg;

	return 0;

exit_free_reg:
	rt2x00pci_free_reg(rt2x00dev);

exit_free_device:
	ieee80211_free_hw(hw);

exit_release_regions:
	pci_clear_mwi(pci_dev);
	pci_release_regions(pci_dev);

exit_disable_device:
	pci_disable_device(pci_dev);

	return retval;
}
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Gertjan van Wingerde
28
8.78%
4
28.57%
Woody Hung
22
6.90%
1
7.14%
Vasiliy Kulikov
13
4.08%
1
7.14%
Joe Perches
10
3.13%
1
7.14%
Jia-Ju Bai
5
1.57%
1
7.14%
Yang Hongyang
4
1.25%
1
7.14%
Hauke Mehrtens
3
0.94%
1
7.14%
Kirill V Tkhai
3
0.94%
1
7.14%
Stanislaw Gruszka
1
0.31%
1
7.14%
Total
319
100.00%
14
100.00%


EXPORT_SYMBOL_GPL(rt2x00pci_probe);



void rt2x00pci_remove(struct pci_dev *pci_dev)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pci_dev);
	struct rt2x00_dev *rt2x00dev = hw->priv;

	/*
         * Free all allocated data.
         */
	rt2x00lib_remove_dev(rt2x00dev);
	rt2x00pci_free_reg(rt2x00dev);
	ieee80211_free_hw(hw);

	/*
         * Free the PCI device data.
         */
	pci_clear_mwi(pci_dev);
	pci_disable_device(pci_dev);
	pci_release_regions(pci_dev);
}
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EXPORT_SYMBOL_GPL(rt2x00pci_remove);

#ifdef CONFIG_PM


int rt2x00pci_suspend(struct pci_dev *pci_dev, pm_message_t state)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pci_dev);
	struct rt2x00_dev *rt2x00dev = hw->priv;
	int retval;

	retval = rt2x00lib_suspend(rt2x00dev, state);
	if (retval)
		return retval;

	pci_save_state(pci_dev);
	pci_disable_device(pci_dev);
	return pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
}
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EXPORT_SYMBOL_GPL(rt2x00pci_suspend);



int rt2x00pci_resume(struct pci_dev *pci_dev)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pci_dev);
	struct rt2x00_dev *rt2x00dev = hw->priv;

	if (pci_set_power_state(pci_dev, PCI_D0) ||
	    pci_enable_device(pci_dev)) {
		rt2x00_err(rt2x00dev, "Failed to resume device\n");
		return -EIO;
	}

	pci_restore_state(pci_dev);
	return rt2x00lib_resume(rt2x00dev);
}
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EXPORT_SYMBOL_GPL(rt2x00pci_resume);
#endif /* CONFIG_PM */

/*
 * rt2x00pci module information.
 */

MODULE_AUTHOR(DRV_PROJECT);

MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("rt2x00 pci library");
MODULE_LICENSE("GPL");
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4
20.00%
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22
2.85%
1
5.00%
Joe Perches
14
1.81%
1
5.00%
Vasiliy Kulikov
13
1.68%
1
5.00%
Jia-Ju Bai
10
1.29%
1
5.00%
Jon Mason
5
0.65%
1
5.00%
Yang Hongyang
4
0.52%
1
5.00%
Hauke Mehrtens
3
0.39%
1
5.00%
Kirill V Tkhai
3
0.39%
1
5.00%
Tejun Heo
3
0.39%
1
5.00%
Jeff Kirsher
1
0.13%
1
5.00%
Stanislaw Gruszka
1
0.13%
1
5.00%
Arjan van de Ven
1
0.13%
1
5.00%
Total
773
100.00%
20
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Directory: drivers/net/wireless/ralink/rt2x00

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