drivers/net/wireless/ath/ath9k/pci.c - kernel/msm-4.9 - Gitiles

 /*
  * Copyright (c) 2008-2011 Atheros Communications Inc.
  *
  * 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.
  */

 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

 #include <linux/nl80211.h>
 #include <linux/pci.h>
 #include <linux/pci-aspm.h>
 #include <linux/ath9k_platform.h>
 #include <linux/module.h>
 #include "ath9k.h"

 static DEFINE_PCI_DEVICE_TABLE(ath_pci_id_table) = {
 	{ PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI   */
 	{ PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
 	{ PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI   */
 	{ PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI   */
 	{ PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */

 	/* AR9285 card for Asus */
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x002B,
 			 PCI_VENDOR_ID_AZWAVE,
 			 0x2C37),
 	  .driver_data = ATH9K_PCI_BT_ANT_DIV },

 	{ PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
 	{ PCI_VDEVICE(ATHEROS, 0x002C) }, /* PCI-E 802.11n bonded out */
 	{ PCI_VDEVICE(ATHEROS, 0x002D) }, /* PCI   */
 	{ PCI_VDEVICE(ATHEROS, 0x002E) }, /* PCI-E */
 	{ PCI_VDEVICE(ATHEROS, 0x0030) }, /* PCI-E  AR9300 */

 	/* PCI-E CUS198 */
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0032,
 			 PCI_VENDOR_ID_AZWAVE,
 			 0x2086),
 	  .driver_data = ATH9K_PCI_CUS198 | ATH9K_PCI_BT_ANT_DIV },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0032,
 			 PCI_VENDOR_ID_AZWAVE,
 			 0x1237),
 	  .driver_data = ATH9K_PCI_CUS198 | ATH9K_PCI_BT_ANT_DIV },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0032,
 			 PCI_VENDOR_ID_AZWAVE,
 			 0x2126),
 	  .driver_data = ATH9K_PCI_CUS198 | ATH9K_PCI_BT_ANT_DIV },

 	/* PCI-E CUS230 */
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0032,
 			 PCI_VENDOR_ID_AZWAVE,
 			 0x2152),
 	  .driver_data = ATH9K_PCI_CUS230 | ATH9K_PCI_BT_ANT_DIV },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0032,
 			 PCI_VENDOR_ID_FOXCONN,
 			 0xE075),
 	  .driver_data = ATH9K_PCI_CUS230 | ATH9K_PCI_BT_ANT_DIV },

 	{ PCI_VDEVICE(ATHEROS, 0x0032) }, /* PCI-E  AR9485 */
 	{ PCI_VDEVICE(ATHEROS, 0x0033) }, /* PCI-E  AR9580 */

 	/* PCI-E CUS217 */
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 PCI_VENDOR_ID_AZWAVE,
 			 0x2116),
 	  .driver_data = ATH9K_PCI_CUS217 },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 0x11AD, /* LITEON */
 			 0x6661),
 	  .driver_data = ATH9K_PCI_CUS217 },

 	/* AR9462 with WoW support */
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 PCI_VENDOR_ID_ATHEROS,
 			 0x3117),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 PCI_VENDOR_ID_LENOVO,
 			 0x3214),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 PCI_VENDOR_ID_ATTANSIC,
 			 0x0091),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 PCI_VENDOR_ID_AZWAVE,
 			 0x2110),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 PCI_VENDOR_ID_ASUSTEK,
 			 0x850E),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 0x11AD, /* LITEON */
 			 0x6631),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 0x11AD, /* LITEON */
 			 0x6641),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 PCI_VENDOR_ID_HP,
 			 0x1864),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 0x14CD, /* USI */
 			 0x0063),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 0x14CD, /* USI */
 			 0x0064),
 	  .driver_data = ATH9K_PCI_WOW },
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
 			 0x0034,
 			 0x10CF, /* Fujitsu */
 			 0x1783),
 	  .driver_data = ATH9K_PCI_WOW },

 	{ PCI_VDEVICE(ATHEROS, 0x0034) }, /* PCI-E  AR9462 */
 	{ PCI_VDEVICE(ATHEROS, 0x0037) }, /* PCI-E  AR1111/AR9485 */
 	{ PCI_VDEVICE(ATHEROS, 0x0036) }, /* PCI-E  AR9565 */
 	{ 0 }
 };


 /* return bus cachesize in 4B word units */
 static void ath_pci_read_cachesize(struct ath_common *common, int *csz)
 {
 	struct ath_softc *sc = (struct ath_softc *) common->priv;
 	u8 u8tmp;

 	pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE, &u8tmp);
 	*csz = (int)u8tmp;

 	/*
 	 * This check was put in to avoid "unpleasant" consequences if
 	 * the bootrom has not fully initialized all PCI devices.
 	 * Sometimes the cache line size register is not set
 	 */

 	if (*csz == 0)
 		*csz = DEFAULT_CACHELINE >> 2;   /* Use the default size */
 }

 static bool ath_pci_eeprom_read(struct ath_common *common, u32 off, u16 *data)
 {
 	struct ath_softc *sc = (struct ath_softc *) common->priv;
 	struct ath9k_platform_data *pdata = sc->dev->platform_data;

 	if (pdata) {
 		if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
 			ath_err(common,
 				"%s: eeprom read failed, offset %08x is out of range\n",
 				__func__, off);
 		}

 		*data = pdata->eeprom_data[off];
 	} else {
 		struct ath_hw *ah = (struct ath_hw *) common->ah;

 		common->ops->read(ah, AR5416_EEPROM_OFFSET +
 				      (off << AR5416_EEPROM_S));

 		if (!ath9k_hw_wait(ah,
 				   AR_EEPROM_STATUS_DATA,
 				   AR_EEPROM_STATUS_DATA_BUSY |
 				   AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
 				   AH_WAIT_TIMEOUT)) {
 			return false;
 		}

 		*data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA),
 			   AR_EEPROM_STATUS_DATA_VAL);
 	}

 	return true;
 }

 /* Need to be called after we discover btcoex capabilities */
 static void ath_pci_aspm_init(struct ath_common *common)
 {
 	struct ath_softc *sc = (struct ath_softc *) common->priv;
 	struct ath_hw *ah = sc->sc_ah;
 	struct pci_dev *pdev = to_pci_dev(sc->dev);
 	struct pci_dev *parent;
 	u16 aspm;

 	if (!ah->is_pciexpress)
 		return;

 	parent = pdev->bus->self;
 	if (!parent)
 		return;

 	if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
 	    (AR_SREV_9285(ah))) {
 		/* Bluetooth coexistence requires disabling ASPM. */
 		pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL,
 			PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1);

 		/*
 		 * Both upstream and downstream PCIe components should
 		 * have the same ASPM settings.
 		 */
 		pcie_capability_clear_word(parent, PCI_EXP_LNKCTL,
 			PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1);

 		ath_info(common, "Disabling ASPM since BTCOEX is enabled\n");
 		return;
 	}

 	pcie_capability_read_word(parent, PCI_EXP_LNKCTL, &aspm);
 	if (aspm & (PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1)) {
 		ah->aspm_enabled = true;
 		/* Initialize PCIe PM and SERDES registers. */
 		ath9k_hw_configpcipowersave(ah, false);
 		ath_info(common, "ASPM enabled: 0x%x\n", aspm);
 	}
 }

 static const struct ath_bus_ops ath_pci_bus_ops = {
 	.ath_bus_type = ATH_PCI,
 	.read_cachesize = ath_pci_read_cachesize,
 	.eeprom_read = ath_pci_eeprom_read,
 	.aspm_init = ath_pci_aspm_init,
 };

 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct ath_softc *sc;
 	struct ieee80211_hw *hw;
 	u8 csz;
 	u32 val;
 	int ret = 0;
 	char hw_name[64];

 	if (pcim_enable_device(pdev))
 		return -EIO;

 	ret =  pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 	if (ret) {
 		pr_err("32-bit DMA not available\n");
 		return ret;
 	}

 	ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 	if (ret) {
 		pr_err("32-bit DMA consistent DMA enable failed\n");
 		return ret;
 	}

 	/*
 	 * Cache line size is used to size and align various
 	 * structures used to communicate with the hardware.
 	 */
 	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
 	if (csz == 0) {
 		/*
 		 * Linux 2.4.18 (at least) writes the cache line size
 		 * register as a 16-bit wide register which is wrong.
 		 * We must have this setup properly for rx buffer
 		 * DMA to work so force a reasonable value here if it
 		 * comes up zero.
 		 */
 		csz = L1_CACHE_BYTES / sizeof(u32);
 		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
 	}
 	/*
 	 * The default setting of latency timer yields poor results,
 	 * set it to the value used by other systems. It may be worth
 	 * tweaking this setting more.
 	 */
 	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);

 	pci_set_master(pdev);

 	/*
 	 * Disable the RETRY_TIMEOUT register (0x41) to keep
 	 * PCI Tx retries from interfering with C3 CPU state.
 	 */
 	pci_read_config_dword(pdev, 0x40, &val);
 	if ((val & 0x0000ff00) != 0)
 		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

 	ret = pcim_iomap_regions(pdev, BIT(0), "ath9k");
 	if (ret) {
 		dev_err(&pdev->dev, "PCI memory region reserve error\n");
 		return -ENODEV;
 	}

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

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

 	sc = hw->priv;
 	sc->hw = hw;
 	sc->dev = &pdev->dev;
 	sc->mem = pcim_iomap_table(pdev)[0];
 	sc->driver_data = id->driver_data;

 	/* Will be cleared in ath9k_start() */
 	set_bit(SC_OP_INVALID, &sc->sc_flags);

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

 	sc->irq = pdev->irq;

 	ret = ath9k_init_device(id->device, sc, &ath_pci_bus_ops);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to initialize device\n");
 		goto err_init;
 	}

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

 	return 0;

 err_init:
 	free_irq(sc->irq, sc);
 err_irq:
 	ieee80211_free_hw(hw);
 	return ret;
 }

 static void ath_pci_remove(struct pci_dev *pdev)
 {
 	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
 	struct ath_softc *sc = hw->priv;

 	if (!is_ath9k_unloaded)
 		sc->sc_ah->ah_flags |= AH_UNPLUGGED;
 	ath9k_deinit_device(sc);
 	free_irq(sc->irq, sc);
 	ieee80211_free_hw(sc->hw);
 }

 #ifdef CONFIG_PM_SLEEP

 static int ath_pci_suspend(struct device *device)
 {
 	struct pci_dev *pdev = to_pci_dev(device);
 	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
 	struct ath_softc *sc = hw->priv;

 	if (sc->wow_enabled)
 		return 0;

 	/* The device has to be moved to FULLSLEEP forcibly.
 	 * Otherwise the chip never moved to full sleep,
 	 * when no interface is up.
 	 */
 	ath9k_stop_btcoex(sc);
 	ath9k_hw_disable(sc->sc_ah);
 	ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);

 	return 0;
 }

 static int ath_pci_resume(struct device *device)
 {
 	struct pci_dev *pdev = to_pci_dev(device);
 	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
 	struct ath_softc *sc = hw->priv;
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
 	u32 val;

 	/*
 	 * Suspend/Resume resets the PCI configuration space, so we have to
 	 * re-disable the RETRY_TIMEOUT register (0x41) to keep
 	 * PCI Tx retries from interfering with C3 CPU state
 	 */
 	pci_read_config_dword(pdev, 0x40, &val);
 	if ((val & 0x0000ff00) != 0)
 		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

 	ath_pci_aspm_init(common);
 	ah->reset_power_on = false;

 	return 0;
 }

 static SIMPLE_DEV_PM_OPS(ath9k_pm_ops, ath_pci_suspend, ath_pci_resume);

 #define ATH9K_PM_OPS	(&ath9k_pm_ops)

 #else /* !CONFIG_PM_SLEEP */

 #define ATH9K_PM_OPS	NULL

 #endif /* !CONFIG_PM_SLEEP */


 MODULE_DEVICE_TABLE(pci, ath_pci_id_table);

 static struct pci_driver ath_pci_driver = {
 	.name       = "ath9k",
 	.id_table   = ath_pci_id_table,
 	.probe      = ath_pci_probe,
 	.remove     = ath_pci_remove,
 	.driver.pm  = ATH9K_PM_OPS,
 };

 int ath_pci_init(void)
 {
 	return pci_register_driver(&ath_pci_driver);
 }

 void ath_pci_exit(void)
 {
 	pci_unregister_driver(&ath_pci_driver);
 }
	/*
	* Copyright (c) 2008-2011 Atheros Communications Inc.
	*
	* 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.
	*/

	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

	#include <linux/nl80211.h>
	#include <linux/pci.h>
	#include <linux/pci-aspm.h>
	#include <linux/ath9k_platform.h>
	#include <linux/module.h>
	#include "ath9k.h"

	static DEFINE_PCI_DEVICE_TABLE(ath_pci_id_table) = {
	{ PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */
	{ PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
	{ PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
	{ PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
	{ PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */

	/* AR9285 card for Asus */
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x002B,
	PCI_VENDOR_ID_AZWAVE,
	0x2C37),
	.driver_data = ATH9K_PCI_BT_ANT_DIV },

	{ PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
	{ PCI_VDEVICE(ATHEROS, 0x002C) }, /* PCI-E 802.11n bonded out */
	{ PCI_VDEVICE(ATHEROS, 0x002D) }, /* PCI */
	{ PCI_VDEVICE(ATHEROS, 0x002E) }, /* PCI-E */
	{ PCI_VDEVICE(ATHEROS, 0x0030) }, /* PCI-E AR9300 */

	/* PCI-E CUS198 */
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0032,
	PCI_VENDOR_ID_AZWAVE,
	0x2086),
	.driver_data = ATH9K_PCI_CUS198 \| ATH9K_PCI_BT_ANT_DIV },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0032,
	PCI_VENDOR_ID_AZWAVE,
	0x1237),
	.driver_data = ATH9K_PCI_CUS198 \| ATH9K_PCI_BT_ANT_DIV },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0032,
	PCI_VENDOR_ID_AZWAVE,
	0x2126),
	.driver_data = ATH9K_PCI_CUS198 \| ATH9K_PCI_BT_ANT_DIV },

	/* PCI-E CUS230 */
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0032,
	PCI_VENDOR_ID_AZWAVE,
	0x2152),
	.driver_data = ATH9K_PCI_CUS230 \| ATH9K_PCI_BT_ANT_DIV },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0032,
	PCI_VENDOR_ID_FOXCONN,
	0xE075),
	.driver_data = ATH9K_PCI_CUS230 \| ATH9K_PCI_BT_ANT_DIV },

	{ PCI_VDEVICE(ATHEROS, 0x0032) }, /* PCI-E AR9485 */
	{ PCI_VDEVICE(ATHEROS, 0x0033) }, /* PCI-E AR9580 */

	/* PCI-E CUS217 */
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	PCI_VENDOR_ID_AZWAVE,
	0x2116),
	.driver_data = ATH9K_PCI_CUS217 },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	0x11AD, /* LITEON */
	0x6661),
	.driver_data = ATH9K_PCI_CUS217 },

	/* AR9462 with WoW support */
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	PCI_VENDOR_ID_ATHEROS,
	0x3117),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	PCI_VENDOR_ID_LENOVO,
	0x3214),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	PCI_VENDOR_ID_ATTANSIC,
	0x0091),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	PCI_VENDOR_ID_AZWAVE,
	0x2110),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	PCI_VENDOR_ID_ASUSTEK,
	0x850E),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	0x11AD, /* LITEON */
	0x6631),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	0x11AD, /* LITEON */
	0x6641),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	PCI_VENDOR_ID_HP,
	0x1864),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	0x14CD, /* USI */
	0x0063),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	0x14CD, /* USI */
	0x0064),
	.driver_data = ATH9K_PCI_WOW },
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
	0x0034,
	0x10CF, /* Fujitsu */
	0x1783),
	.driver_data = ATH9K_PCI_WOW },

	{ PCI_VDEVICE(ATHEROS, 0x0034) }, /* PCI-E AR9462 */
	{ PCI_VDEVICE(ATHEROS, 0x0037) }, /* PCI-E AR1111/AR9485 */
	{ PCI_VDEVICE(ATHEROS, 0x0036) }, /* PCI-E AR9565 */
	{ 0 }
	};


	/* return bus cachesize in 4B word units */
	static void ath_pci_read_cachesize(struct ath_common common, int csz)
	{
	struct ath_softc sc = (struct ath_softc ) common->priv;
	u8 u8tmp;

	pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE, &u8tmp);
	*csz = (int)u8tmp;

	/*
	* This check was put in to avoid "unpleasant" consequences if
	* the bootrom has not fully initialized all PCI devices.
	* Sometimes the cache line size register is not set
	*/

	if (*csz == 0)
	csz = DEFAULT_CACHELINE >> 2; / Use the default size */
	}

	static bool ath_pci_eeprom_read(struct ath_common common, u32 off, u16 data)
	{
	struct ath_softc sc = (struct ath_softc ) common->priv;
	struct ath9k_platform_data *pdata = sc->dev->platform_data;

	if (pdata) {
	if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
	ath_err(common,
	"%s: eeprom read failed, offset %08x is out of range\n",
	__func__, off);
	}

	*data = pdata->eeprom_data[off];
	} else {
	struct ath_hw ah = (struct ath_hw ) common->ah;

	common->ops->read(ah, AR5416_EEPROM_OFFSET +
	(off << AR5416_EEPROM_S));

	if (!ath9k_hw_wait(ah,
	AR_EEPROM_STATUS_DATA,
	AR_EEPROM_STATUS_DATA_BUSY \|
	AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
	AH_WAIT_TIMEOUT)) {
	return false;
	}

	*data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA),
	AR_EEPROM_STATUS_DATA_VAL);
	}

	return true;
	}

	/* Need to be called after we discover btcoex capabilities */
	static void ath_pci_aspm_init(struct ath_common *common)
	{
	struct ath_softc sc = (struct ath_softc ) common->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct pci_dev *pdev = to_pci_dev(sc->dev);
	struct pci_dev *parent;
	u16 aspm;

	if (!ah->is_pciexpress)
	return;

	parent = pdev->bus->self;
	if (!parent)
	return;

	if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
	(AR_SREV_9285(ah))) {
	/* Bluetooth coexistence requires disabling ASPM. */
	pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL,
	PCI_EXP_LNKCTL_ASPM_L0S \| PCI_EXP_LNKCTL_ASPM_L1);

	/*
	* Both upstream and downstream PCIe components should
	* have the same ASPM settings.
	*/
	pcie_capability_clear_word(parent, PCI_EXP_LNKCTL,
	PCI_EXP_LNKCTL_ASPM_L0S \| PCI_EXP_LNKCTL_ASPM_L1);

	ath_info(common, "Disabling ASPM since BTCOEX is enabled\n");
	return;
	}

	pcie_capability_read_word(parent, PCI_EXP_LNKCTL, &aspm);
	if (aspm & (PCI_EXP_LNKCTL_ASPM_L0S \| PCI_EXP_LNKCTL_ASPM_L1)) {
	ah->aspm_enabled = true;
	/* Initialize PCIe PM and SERDES registers. */
	ath9k_hw_configpcipowersave(ah, false);
	ath_info(common, "ASPM enabled: 0x%x\n", aspm);
	}
	}

	static const struct ath_bus_ops ath_pci_bus_ops = {
	.ath_bus_type = ATH_PCI,
	.read_cachesize = ath_pci_read_cachesize,
	.eeprom_read = ath_pci_eeprom_read,
	.aspm_init = ath_pci_aspm_init,
	};

	static int ath_pci_probe(struct pci_dev pdev, const struct pci_device_id id)
	{
	struct ath_softc *sc;
	struct ieee80211_hw *hw;
	u8 csz;
	u32 val;
	int ret = 0;
	char hw_name[64];

	if (pcim_enable_device(pdev))
	return -EIO;

	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
	if (ret) {
	pr_err("32-bit DMA not available\n");
	return ret;
	}

	ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
	if (ret) {
	pr_err("32-bit DMA consistent DMA enable failed\n");
	return ret;
	}

	/*
	* Cache line size is used to size and align various
	* structures used to communicate with the hardware.
	*/
	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
	if (csz == 0) {
	/*
	* Linux 2.4.18 (at least) writes the cache line size
	* register as a 16-bit wide register which is wrong.
	* We must have this setup properly for rx buffer
	* DMA to work so force a reasonable value here if it
	* comes up zero.
	*/
	csz = L1_CACHE_BYTES / sizeof(u32);
	pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
	}
	/*
	* The default setting of latency timer yields poor results,
	* set it to the value used by other systems. It may be worth
	* tweaking this setting more.
	*/
	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);

	pci_set_master(pdev);

	/*
	* Disable the RETRY_TIMEOUT register (0x41) to keep
	* PCI Tx retries from interfering with C3 CPU state.
	*/
	pci_read_config_dword(pdev, 0x40, &val);
	if ((val & 0x0000ff00) != 0)
	pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

	ret = pcim_iomap_regions(pdev, BIT(0), "ath9k");
	if (ret) {
	dev_err(&pdev->dev, "PCI memory region reserve error\n");
	return -ENODEV;
	}

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

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

	sc = hw->priv;
	sc->hw = hw;
	sc->dev = &pdev->dev;
	sc->mem = pcim_iomap_table(pdev)[0];
	sc->driver_data = id->driver_data;

	/* Will be cleared in ath9k_start() */
	set_bit(SC_OP_INVALID, &sc->sc_flags);

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

	sc->irq = pdev->irq;

	ret = ath9k_init_device(id->device, sc, &ath_pci_bus_ops);
	if (ret) {
	dev_err(&pdev->dev, "Failed to initialize device\n");
	goto err_init;
	}

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

	return 0;

	err_init:
	free_irq(sc->irq, sc);
	err_irq:
	ieee80211_free_hw(hw);
	return ret;
	}

	static void ath_pci_remove(struct pci_dev *pdev)
	{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;

	if (!is_ath9k_unloaded)
	sc->sc_ah->ah_flags \|= AH_UNPLUGGED;
	ath9k_deinit_device(sc);
	free_irq(sc->irq, sc);
	ieee80211_free_hw(sc->hw);
	}

	#ifdef CONFIG_PM_SLEEP

	static int ath_pci_suspend(struct device *device)
	{
	struct pci_dev *pdev = to_pci_dev(device);
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;

	if (sc->wow_enabled)
	return 0;

	/* The device has to be moved to FULLSLEEP forcibly.
	* Otherwise the chip never moved to full sleep,
	* when no interface is up.
	*/
	ath9k_stop_btcoex(sc);
	ath9k_hw_disable(sc->sc_ah);
	ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);

	return 0;
	}

	static int ath_pci_resume(struct device *device)
	{
	struct pci_dev *pdev = to_pci_dev(device);
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	u32 val;

	/*
	* Suspend/Resume resets the PCI configuration space, so we have to
	* re-disable the RETRY_TIMEOUT register (0x41) to keep
	* PCI Tx retries from interfering with C3 CPU state
	*/
	pci_read_config_dword(pdev, 0x40, &val);
	if ((val & 0x0000ff00) != 0)
	pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

	ath_pci_aspm_init(common);
	ah->reset_power_on = false;

	return 0;
	}

	static SIMPLE_DEV_PM_OPS(ath9k_pm_ops, ath_pci_suspend, ath_pci_resume);

	#define ATH9K_PM_OPS (&ath9k_pm_ops)

	#else /* !CONFIG_PM_SLEEP */

	#define ATH9K_PM_OPS NULL

	#endif /* !CONFIG_PM_SLEEP */


	MODULE_DEVICE_TABLE(pci, ath_pci_id_table);

	static struct pci_driver ath_pci_driver = {
	.name = "ath9k",
	.id_table = ath_pci_id_table,
	.probe = ath_pci_probe,
	.remove = ath_pci_remove,
	.driver.pm = ATH9K_PM_OPS,
	};

	int ath_pci_init(void)
	{
	return pci_register_driver(&ath_pci_driver);
	}

	void ath_pci_exit(void)
	{
	pci_unregister_driver(&ath_pci_driver);
	}