1 files changed, 192 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ahb.c b/drivers/net/wireless/ath/ath9k/ahb.c
new file mode 100644
index 000000000000..0e65c51ba176
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/ahb.c
@@ -0,0 +1,192 @@
+/*
+ * Copyright (c) 2008-2009 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/ath9k_platform.h>
+#include "ath9k.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 bool ath_ahb_eeprom_read(struct ath_hw *ah, u32 off, u16 *data)
+{
+        struct ath_softc *sc = ah->ah_sc;
+        struct platform_device *pdev = to_platform_device(sc->dev);
+        struct ath9k_platform_data *pdata;
+
+        pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
+        if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
+                DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
+                        "%s: flash read failed, offset %08x is out of range\n",
+                                __func__, off);
+                return false;
+        }
+
+        *data = pdata->eeprom_data[off];
+        return true;
+}
+
+static struct ath_bus_ops ath_ahb_bus_ops  = {
+        .read_cachesize = ath_ahb_read_cachesize,
+        .cleanup = ath_ahb_cleanup,
+
+        .eeprom_read = ath_ahb_eeprom_read,
+};
+
+static int ath_ahb_probe(struct platform_device *pdev)
+{
+        void __iomem *mem;
+        struct ath_wiphy *aphy;
+        struct ath_softc *sc;
+        struct ieee80211_hw *hw;
+        struct resource *res;
+        int irq;
+        int ret = 0;
+        struct ath_hw *ah;
+
+        if (!pdev->dev.platform_data) {
+                dev_err(&pdev->dev, "no platform data specified\n");
+                ret = -EINVAL;
+                goto err_out;
+        }
+
+        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_wiphy) +
+                                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);
+
+        aphy = hw->priv;
+        sc = (struct ath_softc *) (aphy + 1);
+        aphy->sc = sc;
+        aphy->hw = hw;
+        sc->pri_wiphy = aphy;
+        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->hw_version.macVersion),
+               ah->hw_version.macRev,
+               ath_rf_name((ah->hw_version.analog5GhzRev & AR_RADIO_SREV_MAJOR)),
+               ah->hw_version.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_wiphy *aphy = hw->priv;
+                struct ath_softc *sc = aphy->sc;
+
+                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);
+}