Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 373 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
new file mode 100644
index 00000000..77dc327d
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -0,0 +1,373 @@
+/*
+ * 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.
+ */
+
+#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 */
+	{ 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_VDEVICE(ATHEROS, 0x0032) }, /* PCI-E  AR9485 */
+	{ PCI_VDEVICE(ATHEROS, 0x0033) }, /* PCI-E  AR9580 */
+	{ PCI_VDEVICE(ATHEROS, 0x0034) }, /* PCI-E  AR9462 */
+	{ 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;
+}
+
+static void ath_pci_extn_synch_enable(struct ath_common *common)
+{
+	struct ath_softc *sc = (struct ath_softc *) common->priv;
+	struct pci_dev *pdev = to_pci_dev(sc->dev);
+	u8 lnkctl;
+
+	pci_read_config_byte(pdev, sc->sc_ah->caps.pcie_lcr_offset, &lnkctl);
+	lnkctl |= PCI_EXP_LNKCTL_ES;
+	pci_write_config_byte(pdev, sc->sc_ah->caps.pcie_lcr_offset, lnkctl);
+}
+
+/* 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;
+	int pos;
+	u8 aspm;
+
+	pos = pci_pcie_cap(pdev);
+	if (!pos)
+		return;
+
+	parent = pdev->bus->self;
+	if (!parent)
+		return;
+
+	if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
+		/* Bluetooth coexistance requires disabling ASPM. */
+		pci_read_config_byte(pdev, pos + PCI_EXP_LNKCTL, &aspm);
+		aspm &= ~(PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
+		pci_write_config_byte(pdev, pos + PCI_EXP_LNKCTL, aspm);
+
+		/*
+		 * Both upstream and downstream PCIe components should
+		 * have the same ASPM settings.
+		 */
+		pos = pci_pcie_cap(parent);
+		pci_read_config_byte(parent, pos + PCI_EXP_LNKCTL, &aspm);
+		aspm &= ~(PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
+		pci_write_config_byte(parent, pos + PCI_EXP_LNKCTL, aspm);
+
+		return;
+	}
+
+	pos = pci_pcie_cap(parent);
+	pci_read_config_byte(parent, pos +  PCI_EXP_LNKCTL, &aspm);
+	if (aspm & (PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1)) {
+		ah->aspm_enabled = true;
+		/* Initialize PCIe PM and SERDES registers. */
+		ath9k_hw_configpcipowersave(ah, false);
+	}
+}
+
+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,
+	.extn_synch_en = ath_pci_extn_synch_enable,
+	.aspm_init = ath_pci_aspm_init,
+};
+
+static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	void __iomem *mem;
+	struct ath_softc *sc;
+	struct ieee80211_hw *hw;
+	u8 csz;
+	u32 val;
+	int ret = 0;
+	char hw_name[64];
+
+	if (pci_enable_device(pdev))
+		return -EIO;
+
+	ret =  pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (ret) {
+		printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
+		goto err_dma;
+	}
+
+	ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (ret) {
+		printk(KERN_ERR "ath9k: 32-bit DMA consistent "
+			"DMA enable failed\n");
+		goto err_dma;
+	}
+
+	/*
+	 * 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 = pci_request_region(pdev, 0, "ath9k");
+	if (ret) {
+		dev_err(&pdev->dev, "PCI memory region reserve error\n");
+		ret = -ENODEV;
+		goto err_region;
+	}
+
+	mem = pci_iomap(pdev, 0, 0);
+	if (!mem) {
+		printk(KERN_ERR "PCI memory map error\n") ;
+		ret = -EIO;
+		goto err_iomap;
+	}
+
+	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
+	if (!hw) {
+		dev_err(&pdev->dev, "No memory for ieee80211_hw\n");
+		ret = -ENOMEM;
+		goto err_alloc_hw;
+	}
+
+	SET_IEEE80211_DEV(hw, &pdev->dev);
+	pci_set_drvdata(pdev, hw);
+
+	sc = hw->priv;
+	sc->hw = hw;
+	sc->dev = &pdev->dev;
+	sc->mem = mem;
+
+	/* Will be cleared in ath9k_start() */
+	sc->sc_flags |= SC_OP_INVALID;
+
+	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)mem, pdev->irq);
+
+	return 0;
+
+err_init:
+	free_irq(sc->irq, sc);
+err_irq:
+	ieee80211_free_hw(hw);
+err_alloc_hw:
+	pci_iounmap(pdev, mem);
+err_iomap:
+	pci_release_region(pdev, 0);
+err_region:
+	/* Nothing */
+err_dma:
+	pci_disable_device(pdev);
+	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;
+	void __iomem *mem = sc->mem;
+
+	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);
+
+	pci_iounmap(pdev, mem);
+	pci_disable_device(pdev);
+	pci_release_region(pdev, 0);
+}
+
+#ifdef CONFIG_PM
+
+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;
+
+	/* The device has to be moved to FULLSLEEP forcibly.
+	 * Otherwise the chip never moved to full sleep,
+	 * when no interface is up.
+	 */
+	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);
+	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);
+
+	return 0;
+}
+
+static const struct dev_pm_ops ath9k_pm_ops = {
+	.suspend = ath_pci_suspend,
+	.resume = ath_pci_resume,
+	.freeze = ath_pci_suspend,
+	.thaw = ath_pci_resume,
+	.poweroff = ath_pci_suspend,
+	.restore = ath_pci_resume,
+};
+
+#define ATH9K_PM_OPS	(&ath9k_pm_ops)
+
+#else /* !CONFIG_PM */
+
+#define ATH9K_PM_OPS	NULL
+
+#endif /* !CONFIG_PM */
+
+
+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);
+}