Merge branch 'linus' into tracing/hw-breakpoints

Conflicts:
	arch/x86/kernel/process_64.c

Semantic conflict fixed in:
	arch/x86/kvm/x86.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1394 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
new file mode 100644
index 00000000000..d9169b47ac4
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -0,0 +1,1394 @@
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Contact: Luciano Coelho <luciano.coelho@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/spi/spi.h>
+#include <linux/crc32.h>
+#include <linux/etherdevice.h>
+#include <linux/spi/wl12xx.h>
+
+#include "wl1271.h"
+#include "wl12xx_80211.h"
+#include "wl1271_reg.h"
+#include "wl1271_spi.h"
+#include "wl1271_event.h"
+#include "wl1271_tx.h"
+#include "wl1271_rx.h"
+#include "wl1271_ps.h"
+#include "wl1271_init.h"
+#include "wl1271_debugfs.h"
+#include "wl1271_cmd.h"
+#include "wl1271_boot.h"
+
+static int wl1271_plt_init(struct wl1271 *wl)
+{
+	int ret;
+
+	ret = wl1271_acx_init_mem_config(wl);
+	if (ret < 0)
+		return ret;
+
+	ret = wl1271_cmd_data_path(wl, wl->channel, 1);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static void wl1271_disable_interrupts(struct wl1271 *wl)
+{
+	disable_irq(wl->irq);
+}
+
+static void wl1271_power_off(struct wl1271 *wl)
+{
+	wl->set_power(false);
+}
+
+static void wl1271_power_on(struct wl1271 *wl)
+{
+	wl->set_power(true);
+}
+
+static void wl1271_fw_status(struct wl1271 *wl, struct wl1271_fw_status *status)
+{
+	u32 total = 0;
+	int i;
+
+	/*
+	 * FIXME: Reading the FW status directly from the registers seems to
+	 * be the right thing to do, but it doesn't work.  And in the
+	 * reference driver, there is a workaround called
+	 * USE_SDIO_24M_WORKAROUND, which reads the status from memory
+	 * instead, so we do the same here.
+	 */
+
+	wl1271_spi_mem_read(wl, STATUS_MEM_ADDRESS, status, sizeof(*status));
+
+	wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
+		     "drv_rx_counter = %d, tx_results_counter = %d)",
+		     status->intr,
+		     status->fw_rx_counter,
+		     status->drv_rx_counter,
+		     status->tx_results_counter);
+
+	/* update number of available TX blocks */
+	for (i = 0; i < NUM_TX_QUEUES; i++) {
+		u32 cnt = status->tx_released_blks[i] - wl->tx_blocks_freed[i];
+		wl->tx_blocks_freed[i] = status->tx_released_blks[i];
+		wl->tx_blocks_available += cnt;
+		total += cnt;
+	}
+
+	/* if more blocks are available now, schedule some tx work */
+	if (total && !skb_queue_empty(&wl->tx_queue))
+		schedule_work(&wl->tx_work);
+
+	/* update the host-chipset time offset */
+	wl->time_offset = jiffies_to_usecs(jiffies) - status->fw_localtime;
+}
+
+#define WL1271_IRQ_MAX_LOOPS 10
+static void wl1271_irq_work(struct work_struct *work)
+{
+	u32 intr, ctr = WL1271_IRQ_MAX_LOOPS;
+	int ret;
+	struct wl1271 *wl =
+		container_of(work, struct wl1271, irq_work);
+
+	mutex_lock(&wl->mutex);
+
+	wl1271_debug(DEBUG_IRQ, "IRQ work");
+
+	if (wl->state == WL1271_STATE_OFF)
+		goto out;
+
+	ret = wl1271_ps_elp_wakeup(wl, true);
+	if (ret < 0)
+		goto out;
+
+	wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
+
+	intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
+	if (!intr) {
+		wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
+		goto out_sleep;
+	}
+
+	intr &= WL1271_INTR_MASK;
+
+	do {
+		wl1271_fw_status(wl, wl->fw_status);
+
+
+		if (intr & (WL1271_ACX_INTR_EVENT_A |
+			    WL1271_ACX_INTR_EVENT_B)) {
+			wl1271_debug(DEBUG_IRQ,
+				     "WL1271_ACX_INTR_EVENT (0x%x)", intr);
+			if (intr & WL1271_ACX_INTR_EVENT_A)
+				wl1271_event_handle(wl, 0);
+			else
+				wl1271_event_handle(wl, 1);
+		}
+
+		if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
+			wl1271_debug(DEBUG_IRQ,
+				     "WL1271_ACX_INTR_INIT_COMPLETE");
+
+		if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
+			wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
+
+		if (intr & WL1271_ACX_INTR_DATA) {
+			u8 tx_res_cnt = wl->fw_status->tx_results_counter -
+				wl->tx_results_count;
+
+			wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
+
+			/* check for tx results */
+			if (tx_res_cnt)
+				wl1271_tx_complete(wl, tx_res_cnt);
+
+			wl1271_rx(wl, wl->fw_status);
+		}
+
+		intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
+		intr &= WL1271_INTR_MASK;
+	} while (intr && --ctr);
+
+out_sleep:
+	wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
+			   WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
+	wl1271_ps_elp_sleep(wl);
+
+out:
+	mutex_unlock(&wl->mutex);
+}
+
+static irqreturn_t wl1271_irq(int irq, void *cookie)
+{
+	struct wl1271 *wl;
+	unsigned long flags;
+
+	wl1271_debug(DEBUG_IRQ, "IRQ");
+
+	wl = cookie;
+
+	/* complete the ELP completion */
+	spin_lock_irqsave(&wl->wl_lock, flags);
+	if (wl->elp_compl) {
+		complete(wl->elp_compl);
+		wl->elp_compl = NULL;
+	}
+
+	schedule_work(&wl->irq_work);
+	spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+	return IRQ_HANDLED;
+}
+
+static int wl1271_fetch_firmware(struct wl1271 *wl)
+{
+	const struct firmware *fw;
+	int ret;
+
+	ret = request_firmware(&fw, WL1271_FW_NAME, &wl->spi->dev);
+
+	if (ret < 0) {
+		wl1271_error("could not get firmware: %d", ret);
+		return ret;
+	}
+
+	if (fw->size % 4) {
+		wl1271_error("firmware size is not multiple of 32 bits: %zu",
+			     fw->size);
+		ret = -EILSEQ;
+		goto out;
+	}
+
+	wl->fw_len = fw->size;
+	wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
+
+	if (!wl->fw) {
+		wl1271_error("could not allocate memory for the firmware");
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	memcpy(wl->fw, fw->data, wl->fw_len);
+
+	ret = 0;
+
+out:
+	release_firmware(fw);
+
+	return ret;
+}
+
+static int wl1271_fetch_nvs(struct wl1271 *wl)
+{
+	const struct firmware *fw;
+	int ret;
+
+	ret = request_firmware(&fw, WL1271_NVS_NAME, &wl->spi->dev);
+
+	if (ret < 0) {
+		wl1271_error("could not get nvs file: %d", ret);
+		return ret;
+	}
+
+	if (fw->size % 4) {
+		wl1271_error("nvs size is not multiple of 32 bits: %zu",
+			     fw->size);
+		ret = -EILSEQ;
+		goto out;
+	}
+
+	wl->nvs_len = fw->size;
+	wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
+
+	if (!wl->nvs) {
+		wl1271_error("could not allocate memory for the nvs file");
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	memcpy(wl->nvs, fw->data, wl->nvs_len);
+
+	ret = 0;
+
+out:
+	release_firmware(fw);
+
+	return ret;
+}
+
+static void wl1271_fw_wakeup(struct wl1271 *wl)
+{
+	u32 elp_reg;
+
+	elp_reg = ELPCTRL_WAKE_UP;
+	wl1271_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
+}
+
+static int wl1271_setup(struct wl1271 *wl)
+{
+	wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
+	if (!wl->fw_status)
+		return -ENOMEM;
+
+	wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
+	if (!wl->tx_res_if) {
+		kfree(wl->fw_status);
+		return -ENOMEM;
+	}
+
+	INIT_WORK(&wl->irq_work, wl1271_irq_work);
+	INIT_WORK(&wl->tx_work, wl1271_tx_work);
+	return 0;
+}
+
+static int wl1271_chip_wakeup(struct wl1271 *wl)
+{
+	int ret = 0;
+
+	wl1271_power_on(wl);
+	msleep(WL1271_POWER_ON_SLEEP);
+	wl1271_spi_reset(wl);
+	wl1271_spi_init(wl);
+
+	/* We don't need a real memory partition here, because we only want
+	 * to use the registers at this point. */
+	wl1271_set_partition(wl,
+			     0x00000000,
+			     0x00000000,
+			     REGISTERS_BASE,
+			     REGISTERS_DOWN_SIZE);
+
+	/* ELP module wake up */
+	wl1271_fw_wakeup(wl);
+
+	/* whal_FwCtrl_BootSm() */
+
+	/* 0. read chip id from CHIP_ID */
+	wl->chip.id = wl1271_reg_read32(wl, CHIP_ID_B);
+
+	/* 1. check if chip id is valid */
+
+	switch (wl->chip.id) {
+	case CHIP_ID_1271_PG10:
+		wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
+			       wl->chip.id);
+
+		ret = wl1271_setup(wl);
+		if (ret < 0)
+			goto out;
+		break;
+	case CHIP_ID_1271_PG20:
+		wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
+			     wl->chip.id);
+
+		ret = wl1271_setup(wl);
+		if (ret < 0)
+			goto out;
+		break;
+	default:
+		wl1271_error("unsupported chip id: 0x%x", wl->chip.id);
+		ret = -ENODEV;
+		goto out;
+	}
+
+	if (wl->fw == NULL) {
+		ret = wl1271_fetch_firmware(wl);
+		if (ret < 0)
+			goto out;
+	}
+
+	/* No NVS from netlink, try to get it from the filesystem */
+	if (wl->nvs == NULL) {
+		ret = wl1271_fetch_nvs(wl);
+		if (ret < 0)
+			goto out;
+	}
+
+out:
+	return ret;
+}
+
+static void wl1271_filter_work(struct work_struct *work)
+{
+	struct wl1271 *wl =
+		container_of(work, struct wl1271, filter_work);
+	int ret;
+
+	mutex_lock(&wl->mutex);
+
+	if (wl->state == WL1271_STATE_OFF)
+		goto out;
+
+	ret = wl1271_ps_elp_wakeup(wl, false);
+	if (ret < 0)
+		goto out;
+
+	/* FIXME: replace the magic numbers with proper definitions */
+	ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0);
+	if (ret < 0)
+		goto out_sleep;
+
+out_sleep:
+	wl1271_ps_elp_sleep(wl);
+
+out:
+	mutex_unlock(&wl->mutex);
+}
+
+int wl1271_plt_start(struct wl1271 *wl)
+{
+	int ret;
+
+	mutex_lock(&wl->mutex);
+
+	wl1271_notice("power up");
+
+	if (wl->state != WL1271_STATE_OFF) {
+		wl1271_error("cannot go into PLT state because not "
+			     "in off state: %d", wl->state);
+		ret = -EBUSY;
+		goto out;
+	}
+
+	wl->state = WL1271_STATE_PLT;
+
+	ret = wl1271_chip_wakeup(wl);
+	if (ret < 0)
+		goto out;
+
+	ret = wl1271_boot(wl);
+	if (ret < 0)
+		goto out;
+
+	wl1271_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
+
+	ret = wl1271_plt_init(wl);
+	if (ret < 0)
+		goto out;
+
+out:
+	mutex_unlock(&wl->mutex);
+
+	return ret;
+}
+
+int wl1271_plt_stop(struct wl1271 *wl)
+{
+	int ret = 0;
+
+	mutex_lock(&wl->mutex);
+
+	wl1271_notice("power down");
+
+	if (wl->state != WL1271_STATE_PLT) {
+		wl1271_error("cannot power down because not in PLT "
+			     "state: %d", wl->state);
+		ret = -EBUSY;
+		goto out;
+	}
+
+	wl1271_disable_interrupts(wl);
+	wl1271_power_off(wl);
+
+	wl->state = WL1271_STATE_OFF;
+
+out:
+	mutex_unlock(&wl->mutex);
+
+	return ret;
+}
+
+
+static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+	struct wl1271 *wl = hw->priv;
+
+	skb_queue_tail(&wl->tx_queue, skb);
+
+	/*
+	 * The chip specific setup must run before the first TX packet -
+	 * before that, the tx_work will not be initialized!
+	 */
+
+	schedule_work(&wl->tx_work);
+
+	/*
+	 * The workqueue is slow to process the tx_queue and we need stop
+	 * the queue here, otherwise the queue will get too long.
+	 */
+	if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_MAX_LENGTH) {
+		ieee80211_stop_queues(wl->hw);
+
+		/*
+		 * FIXME: this is racy, the variable is not properly
+		 * protected. Maybe fix this by removing the stupid
+		 * variable altogether and checking the real queue state?
+		 */
+		wl->tx_queue_stopped = true;
+	}
+
+	return NETDEV_TX_OK;
+}
+
+static int wl1271_op_start(struct ieee80211_hw *hw)
+{
+	struct wl1271 *wl = hw->priv;
+	int ret = 0;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 start");
+
+	mutex_lock(&wl->mutex);
+
+	if (wl->state != WL1271_STATE_OFF) {
+		wl1271_error("cannot start because not in off state: %d",
+			     wl->state);
+		ret = -EBUSY;
+		goto out;
+	}
+
+	ret = wl1271_chip_wakeup(wl);
+	if (ret < 0)
+		goto out;
+
+	ret = wl1271_boot(wl);
+	if (ret < 0)
+		goto out;
+
+	ret = wl1271_hw_init(wl);
+	if (ret < 0)
+		goto out;
+
+	wl->state = WL1271_STATE_ON;
+
+	wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
+
+out:
+	if (ret < 0)
+		wl1271_power_off(wl);
+
+	mutex_unlock(&wl->mutex);
+
+	return ret;
+}
+
+static void wl1271_op_stop(struct ieee80211_hw *hw)
+{
+	struct wl1271 *wl = hw->priv;
+	int i;
+
+	wl1271_info("down");
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
+
+	mutex_lock(&wl->mutex);
+
+	WARN_ON(wl->state != WL1271_STATE_ON);
+
+	if (wl->scanning) {
+		mutex_unlock(&wl->mutex);
+		ieee80211_scan_completed(wl->hw, true);
+		mutex_lock(&wl->mutex);
+		wl->scanning = false;
+	}
+
+	wl->state = WL1271_STATE_OFF;
+
+	wl1271_disable_interrupts(wl);
+
+	mutex_unlock(&wl->mutex);
+
+	cancel_work_sync(&wl->irq_work);
+	cancel_work_sync(&wl->tx_work);
+	cancel_work_sync(&wl->filter_work);
+
+	mutex_lock(&wl->mutex);
+
+	/* let's notify MAC80211 about the remaining pending TX frames */
+	wl1271_tx_flush(wl);
+	wl1271_power_off(wl);
+
+	memset(wl->bssid, 0, ETH_ALEN);
+	memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
+	wl->ssid_len = 0;
+	wl->listen_int = 1;
+	wl->bss_type = MAX_BSS_TYPE;
+
+	wl->rx_counter = 0;
+	wl->elp = false;
+	wl->psm = 0;
+	wl->tx_queue_stopped = false;
+	wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
+	wl->tx_blocks_available = 0;
+	wl->tx_results_count = 0;
+	wl->tx_packets_count = 0;
+	wl->time_offset = 0;
+	wl->session_counter = 0;
+	for (i = 0; i < NUM_TX_QUEUES; i++)
+		wl->tx_blocks_freed[i] = 0;
+
+	wl1271_debugfs_reset(wl);
+	mutex_unlock(&wl->mutex);
+}
+
+static int wl1271_op_add_interface(struct ieee80211_hw *hw,
+				   struct ieee80211_if_init_conf *conf)
+{
+	struct wl1271 *wl = hw->priv;
+	int ret = 0;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
+		     conf->type, conf->mac_addr);
+
+	mutex_lock(&wl->mutex);
+
+	switch (conf->type) {
+	case NL80211_IFTYPE_STATION:
+		wl->bss_type = BSS_TYPE_STA_BSS;
+		break;
+	case NL80211_IFTYPE_ADHOC:
+		wl->bss_type = BSS_TYPE_IBSS;
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+		goto out;
+	}
+
+	/* FIXME: what if conf->mac_addr changes? */
+
+out:
+	mutex_unlock(&wl->mutex);
+	return ret;
+}
+
+static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
+					 struct ieee80211_if_init_conf *conf)
+{
+	wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
+}
+
+#if 0
+static int wl1271_op_config_interface(struct ieee80211_hw *hw,
+				      struct ieee80211_vif *vif,
+				      struct ieee80211_if_conf *conf)
+{
+	struct wl1271 *wl = hw->priv;
+	struct sk_buff *beacon;
+	DECLARE_MAC_BUF(mac);
+	int ret;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %s",
+		     print_mac(mac, conf->bssid));
+	wl1271_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid,
+			  conf->ssid_len);
+
+	mutex_lock(&wl->mutex);
+
+	ret = wl1271_ps_elp_wakeup(wl, false);
+	if (ret < 0)
+		goto out;
+
+	memcpy(wl->bssid, conf->bssid, ETH_ALEN);
+
+	ret = wl1271_cmd_build_null_data(wl);
+	if (ret < 0)
+		goto out_sleep;
+
+	wl->ssid_len = conf->ssid_len;
+	if (wl->ssid_len)
+		memcpy(wl->ssid, conf->ssid, wl->ssid_len);
+
+	if (wl->bss_type != BSS_TYPE_IBSS) {
+		/* FIXME: replace the magic numbers with proper definitions */
+		ret = wl1271_cmd_join(wl, wl->bss_type, 5, 100, 1);
+		if (ret < 0)
+			goto out_sleep;
+	}
+
+	if (conf->changed & IEEE80211_IFCC_BEACON) {
+		beacon = ieee80211_beacon_get(hw, vif);
+		ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
+					      beacon->data, beacon->len);
+
+		if (ret < 0) {
+			dev_kfree_skb(beacon);
+			goto out_sleep;
+		}
+
+		ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE,
+					      beacon->data, beacon->len);
+
+		dev_kfree_skb(beacon);
+
+		if (ret < 0)
+			goto out_sleep;
+
+		/* FIXME: replace the magic numbers with proper definitions */
+		ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0);
+
+		if (ret < 0)
+			goto out_sleep;
+	}
+
+out_sleep:
+	wl1271_ps_elp_sleep(wl);
+
+out:
+	mutex_unlock(&wl->mutex);
+
+	return ret;
+}
+#endif
+
+static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
+{
+	struct wl1271 *wl = hw->priv;
+	struct ieee80211_conf *conf = &hw->conf;
+	int channel, ret = 0;
+
+	channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
+		     channel,
+		     conf->flags & IEEE80211_CONF_PS ? "on" : "off",
+		     conf->power_level);
+
+	mutex_lock(&wl->mutex);
+
+	ret = wl1271_ps_elp_wakeup(wl, false);
+	if (ret < 0)
+		goto out;
+
+	if (channel != wl->channel) {
+		u8 old_channel = wl->channel;
+		wl->channel = channel;
+
+		/* FIXME: use beacon interval provided by mac80211 */
+		ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0);
+		if (ret < 0) {
+			wl->channel = old_channel;
+			goto out_sleep;
+		}
+	}
+
+	ret = wl1271_cmd_build_null_data(wl);
+	if (ret < 0)
+		goto out_sleep;
+
+	if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
+		wl1271_info("psm enabled");
+
+		wl->psm_requested = true;
+
+		/*
+		 * We enter PSM only if we're already associated.
+		 * If we're not, we'll enter it when joining an SSID,
+		 * through the bss_info_changed() hook.
+		 */
+		ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
+	} else if (!(conf->flags & IEEE80211_CONF_PS) &&
+		   wl->psm_requested) {
+		wl1271_info("psm disabled");
+
+		wl->psm_requested = false;
+
+		if (wl->psm)
+			ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
+	}
+
+	if (conf->power_level != wl->power_level) {
+		ret = wl1271_acx_tx_power(wl, conf->power_level);
+		if (ret < 0)
+			goto out;
+
+		wl->power_level = conf->power_level;
+	}
+
+out_sleep:
+	wl1271_ps_elp_sleep(wl);
+
+out:
+	mutex_unlock(&wl->mutex);
+
+	return ret;
+}
+
+#define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
+				  FIF_ALLMULTI | \
+				  FIF_FCSFAIL | \
+				  FIF_BCN_PRBRESP_PROMISC | \
+				  FIF_CONTROL | \
+				  FIF_OTHER_BSS)
+
+static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
+				       unsigned int changed,
+				       unsigned int *total,u64 multicast)
+{
+	struct wl1271 *wl = hw->priv;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
+
+	*total &= WL1271_SUPPORTED_FILTERS;
+	changed &= WL1271_SUPPORTED_FILTERS;
+
+	if (changed == 0)
+		return;
+
+	/* FIXME: wl->rx_config and wl->rx_filter are not protected */
+	wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
+	wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
+
+	/*
+	 * FIXME: workqueues need to be properly cancelled on stop(), for
+	 * now let's just disable changing the filter settings. They will
+	 * be updated any on config().
+	 */
+	/* schedule_work(&wl->filter_work); */
+}
+
+static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
+			     struct ieee80211_vif *vif,
+			     struct ieee80211_sta *sta,
+			     struct ieee80211_key_conf *key_conf)
+{
+	struct wl1271 *wl = hw->priv;
+	const u8 *addr;
+	int ret;
+	u8 key_type;
+
+	static const u8 bcast_addr[ETH_ALEN] =
+		{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
+
+	addr = sta ? sta->addr : bcast_addr;
+
+	wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
+	wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
+	wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
+		     key_conf->alg, key_conf->keyidx,
+		     key_conf->keylen, key_conf->flags);
+	wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
+
+	if (is_zero_ether_addr(addr)) {
+		/* We dont support TX only encryption */
+		ret = -EOPNOTSUPP;
+		goto out;
+	}
+
+	mutex_lock(&wl->mutex);
+
+	ret = wl1271_ps_elp_wakeup(wl, false);
+	if (ret < 0)
+		goto out_unlock;
+
+	switch (key_conf->alg) {
+	case ALG_WEP:
+		key_type = KEY_WEP;
+
+		key_conf->hw_key_idx = key_conf->keyidx;
+		break;
+	case ALG_TKIP:
+		key_type = KEY_TKIP;
+
+		key_conf->hw_key_idx = key_conf->keyidx;
+		break;
+	case ALG_CCMP:
+		key_type = KEY_AES;
+
+		key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+		break;
+	default:
+		wl1271_error("Unknown key algo 0x%x", key_conf->alg);
+
+		ret = -EOPNOTSUPP;
+		goto out_sleep;
+	}
+
+	switch (cmd) {
+	case SET_KEY:
+		ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
+					 key_conf->keyidx, key_type,
+					 key_conf->keylen, key_conf->key,
+					 addr);
+		if (ret < 0) {
+			wl1271_error("Could not add or replace key");
+			goto out_sleep;
+		}
+		break;
+
+	case DISABLE_KEY:
+		ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
+					 key_conf->keyidx, key_type,
+					 key_conf->keylen, key_conf->key,
+					 addr);
+		if (ret < 0) {
+			wl1271_error("Could not remove key");
+			goto out_sleep;
+		}
+		break;
+
+	default:
+		wl1271_error("Unsupported key cmd 0x%x", cmd);
+		ret = -EOPNOTSUPP;
+		goto out_sleep;
+
+		break;
+	}
+
+out_sleep:
+	wl1271_ps_elp_sleep(wl);
+
+out_unlock:
+	mutex_unlock(&wl->mutex);
+
+out:
+	return ret;
+}
+
+static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
+			     struct cfg80211_scan_request *req)
+{
+	struct wl1271 *wl = hw->priv;
+	int ret;
+	u8 *ssid = NULL;
+	size_t ssid_len = 0;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
+
+	if (req->n_ssids) {
+		ssid = req->ssids[0].ssid;
+		ssid_len = req->ssids[0].ssid_len;
+	}
+
+	mutex_lock(&wl->mutex);
+
+	ret = wl1271_ps_elp_wakeup(wl, false);
+	if (ret < 0)
+		goto out;
+
+	ret = wl1271_cmd_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
+
+	wl1271_ps_elp_sleep(wl);
+
+out:
+	mutex_unlock(&wl->mutex);
+
+	return ret;
+}
+
+static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+	struct wl1271 *wl = hw->priv;
+	int ret;
+
+	mutex_lock(&wl->mutex);
+
+	ret = wl1271_ps_elp_wakeup(wl, false);
+	if (ret < 0)
+		goto out;
+
+	ret = wl1271_acx_rts_threshold(wl, (u16) value);
+	if (ret < 0)
+		wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
+
+	wl1271_ps_elp_sleep(wl);
+
+out:
+	mutex_unlock(&wl->mutex);
+
+	return ret;
+}
+
+static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
+				       struct ieee80211_vif *vif,
+				       struct ieee80211_bss_conf *bss_conf,
+				       u32 changed)
+{
+	enum wl1271_cmd_ps_mode mode;
+	struct wl1271 *wl = hw->priv;
+	int ret;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
+
+	mutex_lock(&wl->mutex);
+
+	ret = wl1271_ps_elp_wakeup(wl, false);
+	if (ret < 0)
+		goto out;
+
+	if (changed & BSS_CHANGED_ASSOC) {
+		if (bss_conf->assoc) {
+			wl->aid = bss_conf->aid;
+
+			ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
+			if (ret < 0)
+				goto out_sleep;
+
+			ret = wl1271_acx_aid(wl, wl->aid);
+			if (ret < 0)
+				goto out_sleep;
+
+			/* If we want to go in PSM but we're not there yet */
+			if (wl->psm_requested && !wl->psm) {
+				mode = STATION_POWER_SAVE_MODE;
+				ret = wl1271_ps_set_mode(wl, mode);
+				if (ret < 0)
+					goto out_sleep;
+			}
+		}
+	}
+	if (changed & BSS_CHANGED_ERP_SLOT) {
+		if (bss_conf->use_short_slot)
+			ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
+		else
+			ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
+		if (ret < 0) {
+			wl1271_warning("Set slot time failed %d", ret);
+			goto out_sleep;
+		}
+	}
+
+	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
+		if (bss_conf->use_short_preamble)
+			wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
+		else
+			wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
+	}
+
+	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
+		if (bss_conf->use_cts_prot)
+			ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
+		else
+			ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
+		if (ret < 0) {
+			wl1271_warning("Set ctsprotect failed %d", ret);
+			goto out_sleep;
+		}
+	}
+
+out_sleep:
+	wl1271_ps_elp_sleep(wl);
+
+out:
+	mutex_unlock(&wl->mutex);
+}
+
+
+/* can't be const, mac80211 writes to this */
+static struct ieee80211_rate wl1271_rates[] = {
+	{ .bitrate = 10,
+	  .hw_value = 0x1,
+	  .hw_value_short = 0x1, },
+	{ .bitrate = 20,
+	  .hw_value = 0x2,
+	  .hw_value_short = 0x2,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 55,
+	  .hw_value = 0x4,
+	  .hw_value_short = 0x4,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 110,
+	  .hw_value = 0x20,
+	  .hw_value_short = 0x20,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 60,
+	  .hw_value = 0x8,
+	  .hw_value_short = 0x8, },
+	{ .bitrate = 90,
+	  .hw_value = 0x10,
+	  .hw_value_short = 0x10, },
+	{ .bitrate = 120,
+	  .hw_value = 0x40,
+	  .hw_value_short = 0x40, },
+	{ .bitrate = 180,
+	  .hw_value = 0x80,
+	  .hw_value_short = 0x80, },
+	{ .bitrate = 240,
+	  .hw_value = 0x200,
+	  .hw_value_short = 0x200, },
+	{ .bitrate = 360,
+	 .hw_value = 0x400,
+	 .hw_value_short = 0x400, },
+	{ .bitrate = 480,
+	  .hw_value = 0x800,
+	  .hw_value_short = 0x800, },
+	{ .bitrate = 540,
+	  .hw_value = 0x1000,
+	  .hw_value_short = 0x1000, },
+};
+
+/* can't be const, mac80211 writes to this */
+static struct ieee80211_channel wl1271_channels[] = {
+	{ .hw_value = 1, .center_freq = 2412},
+	{ .hw_value = 2, .center_freq = 2417},
+	{ .hw_value = 3, .center_freq = 2422},
+	{ .hw_value = 4, .center_freq = 2427},
+	{ .hw_value = 5, .center_freq = 2432},
+	{ .hw_value = 6, .center_freq = 2437},
+	{ .hw_value = 7, .center_freq = 2442},
+	{ .hw_value = 8, .center_freq = 2447},
+	{ .hw_value = 9, .center_freq = 2452},
+	{ .hw_value = 10, .center_freq = 2457},
+	{ .hw_value = 11, .center_freq = 2462},
+	{ .hw_value = 12, .center_freq = 2467},
+	{ .hw_value = 13, .center_freq = 2472},
+};
+
+/* can't be const, mac80211 writes to this */
+static struct ieee80211_supported_band wl1271_band_2ghz = {
+	.channels = wl1271_channels,
+	.n_channels = ARRAY_SIZE(wl1271_channels),
+	.bitrates = wl1271_rates,
+	.n_bitrates = ARRAY_SIZE(wl1271_rates),
+};
+
+static const struct ieee80211_ops wl1271_ops = {
+	.start = wl1271_op_start,
+	.stop = wl1271_op_stop,
+	.add_interface = wl1271_op_add_interface,
+	.remove_interface = wl1271_op_remove_interface,
+	.config = wl1271_op_config,
+/* 	.config_interface = wl1271_op_config_interface, */
+	.configure_filter = wl1271_op_configure_filter,
+	.tx = wl1271_op_tx,
+	.set_key = wl1271_op_set_key,
+	.hw_scan = wl1271_op_hw_scan,
+	.bss_info_changed = wl1271_op_bss_info_changed,
+	.set_rts_threshold = wl1271_op_set_rts_threshold,
+};
+
+static int wl1271_register_hw(struct wl1271 *wl)
+{
+	int ret;
+
+	if (wl->mac80211_registered)
+		return 0;
+
+	SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
+
+	ret = ieee80211_register_hw(wl->hw);
+	if (ret < 0) {
+		wl1271_error("unable to register mac80211 hw: %d", ret);
+		return ret;
+	}
+
+	wl->mac80211_registered = true;
+
+	wl1271_notice("loaded");
+
+	return 0;
+}
+
+static int wl1271_init_ieee80211(struct wl1271 *wl)
+{
+	/*
+	 * The tx descriptor buffer and the TKIP space.
+	 *
+	 * FIXME: add correct 1271 descriptor size
+	 */
+	wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE;
+
+	/* unit us */
+	/* FIXME: find a proper value */
+	wl->hw->channel_change_time = 10000;
+
+	wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
+		IEEE80211_HW_NOISE_DBM;
+
+	wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
+	wl->hw->wiphy->max_scan_ssids = 1;
+	wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
+
+	SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
+
+	return 0;
+}
+
+static void wl1271_device_release(struct device *dev)
+{
+
+}
+
+static struct platform_device wl1271_device = {
+	.name           = "wl1271",
+	.id             = -1,
+
+	/* device model insists to have a release function */
+	.dev            = {
+		.release = wl1271_device_release,
+	},
+};
+
+#define WL1271_DEFAULT_CHANNEL 0
+static int __devinit wl1271_probe(struct spi_device *spi)
+{
+	struct wl12xx_platform_data *pdata;
+	struct ieee80211_hw *hw;
+	struct wl1271 *wl;
+	int ret, i;
+	static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
+
+	pdata = spi->dev.platform_data;
+	if (!pdata) {
+		wl1271_error("no platform data");
+		return -ENODEV;
+	}
+
+	hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
+	if (!hw) {
+		wl1271_error("could not alloc ieee80211_hw");
+		return -ENOMEM;
+	}
+
+	wl = hw->priv;
+	memset(wl, 0, sizeof(*wl));
+
+	wl->hw = hw;
+	dev_set_drvdata(&spi->dev, wl);
+	wl->spi = spi;
+
+	skb_queue_head_init(&wl->tx_queue);
+
+	INIT_WORK(&wl->filter_work, wl1271_filter_work);
+	wl->channel = WL1271_DEFAULT_CHANNEL;
+	wl->scanning = false;
+	wl->default_key = 0;
+	wl->listen_int = 1;
+	wl->rx_counter = 0;
+	wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
+	wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
+	wl->elp = false;
+	wl->psm = 0;
+	wl->psm_requested = false;
+	wl->tx_queue_stopped = false;
+	wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
+
+	/* We use the default power on sleep time until we know which chip
+	 * we're using */
+	for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
+		wl->tx_frames[i] = NULL;
+
+	spin_lock_init(&wl->wl_lock);
+
+	/*
+	 * In case our MAC address is not correctly set,
+	 * we use a random but Nokia MAC.
+	 */
+	memcpy(wl->mac_addr, nokia_oui, 3);
+	get_random_bytes(wl->mac_addr + 3, 3);
+
+	wl->state = WL1271_STATE_OFF;
+	mutex_init(&wl->mutex);
+
+	wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
+	if (!wl->rx_descriptor) {
+		wl1271_error("could not allocate memory for rx descriptor");
+		ret = -ENOMEM;
+		goto out_free;
+	}
+
+	/* This is the only SPI value that we need to set here, the rest
+	 * comes from the board-peripherals file */
+	spi->bits_per_word = 32;
+
+	ret = spi_setup(spi);
+	if (ret < 0) {
+		wl1271_error("spi_setup failed");
+		goto out_free;
+	}
+
+	wl->set_power = pdata->set_power;
+	if (!wl->set_power) {
+		wl1271_error("set power function missing in platform data");
+		ret = -ENODEV;
+		goto out_free;
+	}
+
+	wl->irq = spi->irq;
+	if (wl->irq < 0) {
+		wl1271_error("irq missing in platform data");
+		ret = -ENODEV;
+		goto out_free;
+	}
+
+	ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
+	if (ret < 0) {
+		wl1271_error("request_irq() failed: %d", ret);
+		goto out_free;
+	}
+
+	set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
+
+	disable_irq(wl->irq);
+
+	ret = platform_device_register(&wl1271_device);
+	if (ret) {
+		wl1271_error("couldn't register platform device");
+		goto out_irq;
+	}
+	dev_set_drvdata(&wl1271_device.dev, wl);
+
+	ret = wl1271_init_ieee80211(wl);
+	if (ret)
+		goto out_platform;
+
+	ret = wl1271_register_hw(wl);
+	if (ret)
+		goto out_platform;
+
+	wl1271_debugfs_init(wl);
+
+	wl1271_notice("initialized");
+
+	return 0;
+
+ out_platform:
+	platform_device_unregister(&wl1271_device);
+
+ out_irq:
+	free_irq(wl->irq, wl);
+
+ out_free:
+	kfree(wl->rx_descriptor);
+	wl->rx_descriptor = NULL;
+
+	ieee80211_free_hw(hw);
+
+	return ret;
+}
+
+static int __devexit wl1271_remove(struct spi_device *spi)
+{
+	struct wl1271 *wl = dev_get_drvdata(&spi->dev);
+
+	ieee80211_unregister_hw(wl->hw);
+
+	wl1271_debugfs_exit(wl);
+	platform_device_unregister(&wl1271_device);
+	free_irq(wl->irq, wl);
+	kfree(wl->target_mem_map);
+	kfree(wl->fw);
+	wl->fw = NULL;
+	kfree(wl->nvs);
+	wl->nvs = NULL;
+
+	kfree(wl->rx_descriptor);
+	wl->rx_descriptor = NULL;
+
+	kfree(wl->fw_status);
+	kfree(wl->tx_res_if);
+
+	ieee80211_free_hw(wl->hw);
+
+	return 0;
+}
+
+
+static struct spi_driver wl1271_spi_driver = {
+	.driver = {
+		.name		= "wl1271",
+		.bus		= &spi_bus_type,
+		.owner		= THIS_MODULE,
+	},
+
+	.probe		= wl1271_probe,
+	.remove		= __devexit_p(wl1271_remove),
+};
+
+static int __init wl1271_init(void)
+{
+	int ret;
+
+	ret = spi_register_driver(&wl1271_spi_driver);
+	if (ret < 0) {
+		wl1271_error("failed to register spi driver: %d", ret);
+		goto out;
+	}
+
+out:
+	return ret;
+}
+
+static void __exit wl1271_exit(void)
+{
+	spi_unregister_driver(&wl1271_spi_driver);
+
+	wl1271_notice("unloaded");
+}
+
+module_init(wl1271_init);
+module_exit(wl1271_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");