--- /dev/null
+
+/*
+ * This file is part of wl1251
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Contact: Kalle Valo <kalle.valo@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/vmalloc.h>
+#include <linux/spi/wl12xx.h>
+#include <linux/inetdevice.h>
+
+#include "wl1251.h"
+#include "wl12xx_80211.h"
+#include "wl1251_reg.h"
+#include "wl1251_spi.h"
+#include "wl1251_event.h"
+#include "wl1251_tx.h"
+#include "wl1251_rx.h"
+#include "wl1251_ps.h"
+#include "wl1251_init.h"
+#include "wl1251_netlink.h"
+#include "wl1251_debugfs.h"
+#include "wl1251_boot.h"
+
+static ssize_t wl1251_sysfs_show_tx_mgmt_frm_rate(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct wl1251 *wl = dev_get_drvdata(dev);
+ ssize_t len;
+ int val;
+
+ /* FIXME: what's the maximum length of buf? page size?*/
+ len = 500;
+
+ switch (wl->tx_mgmt_frm_rate) {
+ /* skip 1 and 12 Mbps because they have same value 0x0a */
+ case RATE_2MBPS:
+ val = 20;
+ break;
+ case RATE_5_5MBPS:
+ val = 55;
+ break;
+ case RATE_11MBPS:
+ val = 110;
+ break;
+ case RATE_6MBPS:
+ val = 60;
+ break;
+ case RATE_9MBPS:
+ val = 90;
+ break;
+ case RATE_12MBPS:
+ val = 120;
+ break;
+ case RATE_18MBPS:
+ val = 180;
+ break;
+ case RATE_24MBPS:
+ val = 240;
+ break;
+ case RATE_36MBPS:
+ val = 360;
+ break;
+ case RATE_48MBPS:
+ val = 480;
+ break;
+ case RATE_54MBPS:
+ val = 540;
+ break;
+ default:
+ val = 10;
+ }
+
+ /* for 1 and 12 Mbps we have to check the modulation */
+ if (wl->tx_mgmt_frm_rate == RATE_1MBPS) {
+ switch (wl->tx_mgmt_frm_rate) {
+ case CCK_LONG:
+ val = 10;
+ break;
+ case OFDM:
+ val = 120;
+ break;
+ default:
+ val = 10;
+ break;
+ }
+ }
+ len = snprintf(buf, len, "%d", val);
+
+ return len;
+}
+
+static ssize_t wl1251_sysfs_store_tx_mgmt_frm_rate(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct wl1251 *wl = dev_get_drvdata(dev);
+ unsigned long res;
+ int ret;
+
+ ret = strict_strtoul(buf, 10, &res);
+
+ if (ret < 0) {
+ wl1251_warning("incorrect value written to tx_mgmt_frm_rate");
+ return 0;
+ }
+
+ switch (res) {
+ case 10:
+ wl->tx_mgmt_frm_rate = RATE_1MBPS;
+ wl->tx_mgmt_frm_mod = CCK_LONG;
+ break;
+ case 20:
+ wl->tx_mgmt_frm_rate = RATE_2MBPS;
+ wl->tx_mgmt_frm_mod = CCK_LONG;
+ break;
+ case 55:
+ wl->tx_mgmt_frm_rate = RATE_5_5MBPS;
+ wl->tx_mgmt_frm_mod = CCK_LONG;
+ break;
+ case 110:
+ wl->tx_mgmt_frm_rate = RATE_11MBPS;
+ wl->tx_mgmt_frm_mod = CCK_LONG;
+ break;
+ case 60:
+ wl->tx_mgmt_frm_rate = RATE_6MBPS;
+ wl->tx_mgmt_frm_mod = OFDM;
+ break;
+ case 90:
+ wl->tx_mgmt_frm_rate = RATE_9MBPS;
+ wl->tx_mgmt_frm_mod = OFDM;
+ break;
+ case 120:
+ wl->tx_mgmt_frm_rate = RATE_12MBPS;
+ wl->tx_mgmt_frm_mod = OFDM;
+ break;
+ case 180:
+ wl->tx_mgmt_frm_rate = RATE_18MBPS;
+ wl->tx_mgmt_frm_mod = OFDM;
+ break;
+ case 240:
+ wl->tx_mgmt_frm_rate = RATE_24MBPS;
+ wl->tx_mgmt_frm_mod = OFDM;
+ break;
+ case 360:
+ wl->tx_mgmt_frm_rate = RATE_36MBPS;
+ wl->tx_mgmt_frm_mod = OFDM;
+ break;
+ case 480:
+ wl->tx_mgmt_frm_rate = RATE_48MBPS;
+ wl->tx_mgmt_frm_mod = OFDM;
+ break;
+ case 540:
+ wl->tx_mgmt_frm_rate = RATE_54MBPS;
+ wl->tx_mgmt_frm_mod = OFDM;
+ break;
+ default:
+ wl1251_warning("incorrect value written to tx_mgmt_frm_rate");
+ return 0;
+ }
+
+ return count;
+}
+
+static ssize_t wl1251_sysfs_show_bt_coex_mode(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct wl1251 *wl = dev_get_drvdata(dev);
+ ssize_t len;
+
+ /* FIXME: what's the maximum length of buf? page size?*/
+ len = 500;
+
+ mutex_lock(&wl->mutex);
+ len = snprintf(buf, len, "%d\n\n%d - off\n%d - on\n%d - monoaudio\n",
+ wl->bt_coex_mode,
+ WL1251_BT_COEX_OFF,
+ WL1251_BT_COEX_ENABLE,
+ WL1251_BT_COEX_MONOAUDIO);
+ mutex_unlock(&wl->mutex);
+
+ return len;
+
+}
+
+static ssize_t wl1251_sysfs_store_bt_coex_mode(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct wl1251 *wl = dev_get_drvdata(dev);
+ unsigned long res;
+ int ret;
+
+ ret = strict_strtoul(buf, 10, &res);
+
+ if (ret < 0) {
+ wl1251_warning("incorrect value written to bt_coex_mode");
+ return count;
+ }
+
+ mutex_lock(&wl->mutex);
+
+ if (res == wl->bt_coex_mode)
+ goto out;
+
+ switch (res) {
+ case WL1251_BT_COEX_OFF:
+ case WL1251_BT_COEX_ENABLE:
+ case WL1251_BT_COEX_MONOAUDIO:
+ wl->bt_coex_mode = res;
+ break;
+ default:
+ wl1251_warning("incorrect value written to bt_coex_mode");
+ goto out;
+ }
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ wl1251_acx_sg_configure(wl, false);
+ wl1251_ps_elp_sleep(wl);
+
+ out:
+ mutex_unlock(&wl->mutex);
+ return count;
+}
+
+static DEVICE_ATTR(tx_mgmt_frm_rate, S_IRUGO | S_IWUSR,
+ wl1251_sysfs_show_tx_mgmt_frm_rate,
+ wl1251_sysfs_store_tx_mgmt_frm_rate);
+
+static DEVICE_ATTR(bt_coex_mode, S_IRUGO | S_IWUSR,
+ wl1251_sysfs_show_bt_coex_mode,
+ wl1251_sysfs_store_bt_coex_mode);
+
+static void wl1251_disable_interrupts(struct wl1251 *wl)
+{
+ disable_irq(wl->irq);
+}
+
+static void wl1251_power_off(struct wl1251 *wl)
+{
+ wl->set_power(false);
+}
+
+static void wl1251_power_on(struct wl1251 *wl)
+{
+ wl->set_power(true);
+}
+
+static irqreturn_t wl1251_irq(int irq, void *cookie)
+{
+ struct wl1251 *wl;
+
+ wl1251_debug(DEBUG_IRQ, "IRQ");
+
+ wl = cookie;
+
+ queue_work(wl->hw->workqueue, &wl->irq_work);
+
+ return IRQ_HANDLED;
+}
+
+static int wl1251_fetch_firmware(struct wl1251 *wl)
+{
+ const struct firmware *fw;
+ int ret;
+
+ ret = request_firmware(&fw, WL1251_FW_NAME, &wl->spi->dev);
+
+ if (ret < 0) {
+ wl1251_error("could not get firmware: %d", ret);
+ return ret;
+ }
+
+ if (fw->size % 4) {
+ wl1251_error("firmware size is not multiple of 32 bits: %zu",
+ fw->size);
+ ret = -EILSEQ;
+ goto out;
+ }
+
+ wl->fw_len = fw->size;
+ wl->fw = vmalloc(wl->fw_len);
+
+ if (!wl->fw) {
+ wl1251_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 wl1251_fetch_nvs(struct wl1251 *wl)
+{
+ const struct firmware *fw;
+ int ret;
+
+ ret = request_firmware(&fw, WL1251_NVS_NAME, &wl->spi->dev);
+
+ if (ret < 0) {
+ wl1251_error("could not get nvs file: %d", ret);
+ return ret;
+ }
+
+ if (fw->size % 4) {
+ wl1251_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) {
+ wl1251_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 wl1251_fw_wakeup(struct wl1251 *wl)
+{
+ u32 elp_reg;
+
+ elp_reg = ELPCTRL_WAKE_UP;
+ wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
+ elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
+
+ if (!(elp_reg & ELPCTRL_WLAN_READY))
+ wl1251_warning("WLAN not ready");
+}
+
+static int wl1251_chip_wakeup(struct wl1251 *wl)
+{
+ int ret = 0;
+
+ wl1251_power_on(wl);
+ msleep(WL1251_POWER_ON_SLEEP);
+ wl1251_spi_reset(wl);
+ wl1251_spi_init(wl);
+
+ /* We don't need a real memory partition here, because we only want
+ * to use the registers at this point. */
+ wl1251_set_partition(wl,
+ 0x00000000,
+ 0x00000000,
+ REGISTERS_BASE,
+ REGISTERS_DOWN_SIZE);
+
+ /* ELP module wake up */
+ wl1251_fw_wakeup(wl);
+
+ /* whal_FwCtrl_BootSm() */
+
+ /* 0. read chip id from CHIP_ID */
+ wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
+
+ /* 1. check if chip id is valid */
+
+ switch (wl->chip_id) {
+ case CHIP_ID_1251_PG12:
+ wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
+ wl->chip_id);
+ break;
+ case CHIP_ID_1251_PG10:
+ case CHIP_ID_1251_PG11:
+ default:
+ wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (wl->fw == NULL) {
+ ret = wl1251_fetch_firmware(wl);
+ if (ret < 0)
+ goto out;
+ }
+
+ /* No NVS from netlink, try to get it from the filesystem */
+ if (wl->nvs == NULL) {
+ ret = wl1251_fetch_nvs(wl);
+ if (ret < 0)
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+#define WL1251_EVENT_TIMEOUT 10000
+#define WL1251_IRQ_LOOP_COUNT 10
+static void wl1251_irq_work(struct work_struct *work)
+{
+ u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
+ struct wl1251 *wl =
+ container_of(work, struct wl1251, irq_work);
+ int ret;
+
+ mutex_lock(&wl->mutex);
+
+ wl1251_debug(DEBUG_IRQ, "IRQ work");
+
+ if (wl->state == WL1251_STATE_OFF)
+ goto out;
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
+
+ intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
+ wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
+
+ do {
+ if (wl->data_path) {
+ wl->rx_counter = wl1251_mem_read32(
+ wl, wl->data_path->rx_control_addr);
+
+ /* We handle a frmware bug here */
+ switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
+ case 0:
+ wl1251_debug(DEBUG_IRQ,
+ "RX: FW and host in sync");
+ intr &= ~WL1251_ACX_INTR_RX0_DATA;
+ intr &= ~WL1251_ACX_INTR_RX1_DATA;
+ break;
+ case 1:
+ wl1251_debug(DEBUG_IRQ, "RX: FW +1");
+ intr |= WL1251_ACX_INTR_RX0_DATA;
+ intr &= ~WL1251_ACX_INTR_RX1_DATA;
+ break;
+ case 2:
+ wl1251_debug(DEBUG_IRQ, "RX: FW +2");
+ intr |= WL1251_ACX_INTR_RX0_DATA;
+ intr |= WL1251_ACX_INTR_RX1_DATA;
+ break;
+ default:
+ wl1251_warning(
+ "RX: FW and host out of sync: %d",
+ wl->rx_counter - wl->rx_handled);
+ break;
+ }
+
+ wl->rx_handled = wl->rx_counter;
+
+ wl1251_debug(DEBUG_IRQ, "RX counter: %d",
+ wl->rx_counter);
+ }
+
+ intr &= wl->intr_mask;
+
+ if (intr == 0) {
+ wl1251_debug(DEBUG_IRQ, "INTR is 0");
+ goto out_sleep;
+ }
+
+ if (intr & WL1251_ACX_INTR_RX0_DATA) {
+ wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
+ wl1251_rx(wl);
+ }
+
+ if (intr & WL1251_ACX_INTR_RX1_DATA) {
+ wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
+ wl1251_rx(wl);
+ }
+
+ if (intr & WL1251_ACX_INTR_TX_RESULT) {
+ wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
+ wl1251_tx_complete(wl);
+ }
+
+ if (intr & (WL1251_ACX_INTR_EVENT_A |
+ WL1251_ACX_INTR_EVENT_B)) {
+ wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
+ intr);
+ if (intr & WL1251_ACX_INTR_EVENT_A)
+ wl1251_event_handle(wl, 0);
+ else
+ wl1251_event_handle(wl, 1);
+
+ wl->last_event = jiffies +
+ msecs_to_jiffies(WL1251_EVENT_TIMEOUT);
+ }
+
+ if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
+ wl1251_debug(DEBUG_IRQ,
+ "WL1251_ACX_INTR_INIT_COMPLETE");
+
+ if (--ctr == 0)
+ break;
+
+ intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
+ } while (intr);
+
+out_sleep:
+ /* FIXME:
+ * Occasionally the firmware puts mailbox events into the mailbox
+ * for the host to read, but fails to flag the appropriate mailbox
+ * interrupt. This causes the event mailbox to get jammed. This
+ * work-a-round wakes the event queue periodically to avoid the jam.
+ *
+ * The real fix involves a firmware-side and host-side counter
+ * mechanism, similar to the one above for the RX path.
+ */
+ if (time_after(jiffies, wl->last_event) && ctr) {
+ wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG,
+ INTR_TRIG_EVENT_ACK);
+ wl->last_event = jiffies +
+ msecs_to_jiffies(WL1251_EVENT_TIMEOUT);
+ }
+ wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
+ wl1251_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+}
+
+static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
+ u16 beacon_interval, u8 dtim_period)
+{
+ int ret;
+
+ ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
+ DEFAULT_HW_GEN_MODULATION_TYPE,
+ wl->tx_mgmt_frm_rate,
+ wl->tx_mgmt_frm_mod);
+ if (ret < 0)
+ goto out;
+
+
+ ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
+ dtim_period);
+ if (ret < 0)
+ goto out;
+
+ /*
+ * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
+ * locking we just sleep instead, for now
+ */
+ msleep(10);
+
+out:
+ return ret;
+}
+struct wl1251_filter_params {
+ unsigned int filters;
+ unsigned int changed;
+ int mc_list_length;
+ u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
+};
+
+#define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
+ FIF_ALLMULTI | \
+ FIF_FCSFAIL | \
+ FIF_BCN_PRBRESP_PROMISC | \
+ FIF_CONTROL | \
+ FIF_OTHER_BSS)
+
+static void wl1251_filter_work(struct work_struct *work)
+{
+ struct wl1251 *wl =
+ container_of(work, struct wl1251, filter_work);
+ struct wl1251_filter_params *fp;
+ unsigned long flags;
+ bool enabled = true;
+ int ret;
+
+ /* first, get the filter parameters */
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ fp = wl->filter_params;
+ wl->filter_params = NULL;
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+ if (!fp)
+ return;
+
+ /* then, lock the mutex without risk of lock-up */
+ mutex_lock(&wl->mutex);
+
+ if (wl->state == WL1251_STATE_OFF)
+ goto out;
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ /* configure the mc filter regardless of the changed flags */
+ if (fp->filters & FIF_ALLMULTI)
+ enabled = false;
+
+ ret = wl1251_acx_group_address_tbl(wl, fp->mc_list, fp->mc_list_length,
+ enabled);
+ if (ret < 0)
+ goto out_sleep;
+
+ /* determine, whether supported filter values have changed */
+ if (fp->changed == 0)
+ goto out;
+
+ /* apply configured filters */
+ ret = wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
+ if (ret < 0)
+ goto out_sleep;
+
+out_sleep:
+ wl1251_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+ kfree(fp);
+}
+
+static int wl1251_plt_init(struct wl1251 *wl)
+{
+ int ret;
+
+ ret = wl1251_hw_init_mem_config(wl);
+ if (ret < 0)
+ return ret;
+
+ ret = wl1251_cmd_data_path(wl, wl->channel, 1);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+int wl1251_plt_start(struct wl1251 *wl)
+{
+ int ret;
+
+ mutex_lock(&wl->mutex);
+
+ wl1251_notice("power up");
+
+ if (wl->state != WL1251_STATE_OFF) {
+ wl1251_error("cannot go into PLT state because not "
+ "in off state: %d", wl->state);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ wl->state = WL1251_STATE_PLT;
+
+ ret = wl1251_chip_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1251_boot(wl);
+ if (ret < 0)
+ goto out;
+
+ wl1251_notice("firmware booted in PLT mode (%s)", wl->fw_ver);
+
+ ret = wl1251_plt_init(wl);
+ if (ret < 0)
+ goto out;
+
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+int wl1251_plt_stop(struct wl1251 *wl)
+{
+ int ret = 0;
+
+ mutex_lock(&wl->mutex);
+
+ wl1251_notice("power down");
+
+ if (wl->state != WL1251_STATE_PLT) {
+ wl1251_error("cannot power down because not in PLT "
+ "state: %d", wl->state);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ wl1251_disable_interrupts(wl);
+ wl1251_power_off(wl);
+
+ wl->state = WL1251_STATE_OFF;
+
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+
+static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+ struct wl1251 *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!
+ */
+
+ queue_work(wl->hw->workqueue, &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) >= WL1251_TX_QUEUE_MAX_LENGTH) {
+ wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
+ 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 wl1251_dev_notify(struct notifier_block *me, unsigned long what,
+ void *arg)
+{
+ struct net_device *dev;
+ struct wireless_dev *wdev;
+ struct wiphy *wiphy;
+ struct ieee80211_hw *hw;
+ struct wl1251 *wl;
+ struct in_ifaddr *ifa = arg;
+ int ret = 0;
+
+ dev = ifa->ifa_dev->dev;
+
+ wdev = dev->ieee80211_ptr;
+ if (wdev == NULL)
+ return -ENODEV;
+
+ wiphy = wdev->wiphy;
+ if (wiphy == NULL)
+ return -ENODEV;
+
+ hw = wiphy_priv(wiphy);
+ if (hw == NULL)
+ return -ENODEV;
+
+ /* FIXME, we assume here that the notification was for wl12xx.
+ That is not true if there are multiple WLAN adapters in the device.
+ FIXME, we should probably not install ARP filter if the interface
+ has multiple addresses.
+ */
+ wl = hw->priv;
+
+ mutex_lock(&wl->mutex);
+
+ if (wl->state == WL1251_STATE_OFF)
+ goto out;
+
+ /* FIXME, add support for IPv6 */
+ if (what == NETDEV_UP) {
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1251_acx_ip_config(wl, true, (u8 *)&ifa->ifa_address,
+ IPV4_VERSION);
+ wl1251_ps_elp_sleep(wl);
+
+ } else if (what == NETDEV_DOWN) {
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+ ret = wl1251_acx_ip_config(wl, false, NULL, IPV4_VERSION);
+ wl1251_ps_elp_sleep(wl);
+ }
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+static struct notifier_block wl1251_dev_notifier = {
+ .notifier_call = wl1251_dev_notify,
+};
+
+static int wl1251_op_start(struct ieee80211_hw *hw)
+{
+ struct wl1251 *wl = hw->priv;
+ int ret = 0;
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 start");
+
+ mutex_lock(&wl->mutex);
+
+ if (wl->state != WL1251_STATE_OFF) {
+ wl1251_error("cannot start because not in off state: %d",
+ wl->state);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = wl1251_chip_wakeup(wl);
+ if (ret < 0)
+ return ret;
+
+ ret = wl1251_boot(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1251_hw_init(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1251_acx_station_id(wl);
+ if (ret < 0)
+ goto out;
+
+ wl->state = WL1251_STATE_ON;
+
+ wl1251_info("firmware booted (%s)", wl->fw_ver);
+
+out:
+ if (ret < 0)
+ wl1251_power_off(wl);
+
+ mutex_unlock(&wl->mutex);
+
+ register_inetaddr_notifier(&wl1251_dev_notifier);
+
+ return ret;
+}
+
+static void wl1251_op_stop(struct ieee80211_hw *hw)
+{
+ struct wl1251 *wl = hw->priv;
+ unsigned long flags;
+
+ wl1251_info("down");
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
+
+ /* complete/cancel ongoing work */
+ cancel_work_sync(&wl->filter_work);
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ kfree(wl->filter_params);
+ wl->filter_params = NULL;
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+ unregister_inetaddr_notifier(&wl1251_dev_notifier);
+
+ mutex_lock(&wl->mutex);
+
+ WARN_ON(wl->state != WL1251_STATE_ON);
+
+ if (wl->scanning) {
+ mutex_unlock(&wl->mutex);
+ ieee80211_scan_completed(wl->hw);
+ mutex_lock(&wl->mutex);
+ wl->scanning = false;
+ }
+
+ wl->state = WL1251_STATE_OFF;
+
+ wl1251_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 */
+ wl1251_tx_flush(wl);
+ wl1251_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->data_in_count = 0;
+ wl->rx_counter = 0;
+ wl->rx_handled = 0;
+ wl->rx_current_buffer = 0;
+ wl->rx_last_id = 0;
+ wl->next_tx_complete = 0;
+ wl->elp = false;
+ wl->psm = 0;
+ wl->ps_entry_retry = 0;
+ wl->tx_queue_stopped = false;
+ wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
+ wl->channel = WL1251_DEFAULT_CHANNEL;
+ wl->last_event = 0;
+
+ wl1251_debugfs_reset(wl);
+
+ mutex_unlock(&wl->mutex);
+}
+
+static int wl1251_op_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct wl1251 *wl = hw->priv;
+ DECLARE_MAC_BUF(mac);
+ int ret = 0;
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %s",
+ conf->type, print_mac(mac, conf->mac_addr));
+
+ mutex_lock(&wl->mutex);
+ if (wl->vif) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ wl->vif = conf->vif;
+
+ 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;
+ }
+
+ if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
+ memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
+ SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
+ ret = wl1251_acx_station_id(wl);
+ if (ret < 0)
+ goto out;
+ }
+
+out:
+ mutex_unlock(&wl->mutex);
+ return ret;
+}
+
+static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct wl1251 *wl = hw->priv;
+
+ mutex_lock(&wl->mutex);
+ wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
+ wl->vif = NULL;
+ mutex_unlock(&wl->mutex);
+}
+
+static int wl1251_build_null_data(struct wl1251 *wl)
+{
+ struct wl12xx_null_data_template template;
+
+ if (!is_zero_ether_addr(wl->bssid)) {
+ memcpy(template.header.da, wl->bssid, ETH_ALEN);
+ memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
+ } else {
+ memset(template.header.da, 0xff, ETH_ALEN);
+ memset(template.header.bssid, 0xff, ETH_ALEN);
+ }
+
+ memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
+ template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
+ IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_TODS);
+
+ return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
+ sizeof(template));
+
+}
+
+static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
+{
+ struct wl12xx_ps_poll_template template;
+
+ memcpy(template.bssid, wl->bssid, ETH_ALEN);
+ memcpy(template.ta, wl->mac_addr, ETH_ALEN);
+
+ /* aid in PS-Poll has its two MSBs each set to 1 */
+ template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
+
+ template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
+
+ return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
+ sizeof(template));
+
+}
+
+static void wl1251_update_support_rates(struct wl12xx_beacon_template *beacon)
+{
+ int index, rate_len;
+ u16 size;
+ struct wl12xx_ie_rates *rates;
+ struct wl12xx_ie_ssid *ssid;
+ u8 *ptr;
+
+ ptr = (u8 *)beacon;
+ size = sizeof(struct ieee80211_header);
+
+ ptr += size;
+ /* Pass through time stamp, beacon interval and capability */
+ ptr += (6 * sizeof(u16));
+
+ ssid = (struct wl12xx_ie_ssid *)ptr;
+ size = sizeof(struct wl12xx_ie_header) + ssid->header.len;
+ ptr += size;
+
+ rates = (struct wl12xx_ie_rates *)ptr;
+ rate_len = rates->header.len;
+ size = sizeof(struct wl12xx_ie_header) + rate_len;
+ for (index = 0; index < rate_len; index++) {
+ if (rates->rates[index] == IEEE80211_CCK_RATE_1MB) {
+ rates->rates[index] = IEEE80211_BASIC_RATE_MASK |
+ IEEE80211_CCK_RATE_1MB;
+ }
+ if (rates->rates[index] == IEEE80211_CCK_RATE_2MB) {
+ rates->rates[index] = IEEE80211_BASIC_RATE_MASK |
+ IEEE80211_CCK_RATE_2MB;
+ }
+ if (rates->rates[index] == IEEE80211_CCK_RATE_5MB) {
+ rates->rates[index] = IEEE80211_BASIC_RATE_MASK |
+ IEEE80211_CCK_RATE_5MB;
+ }
+ if (rates->rates[index] == IEEE80211_CCK_RATE_11MB) {
+ rates->rates[index] = IEEE80211_BASIC_RATE_MASK |
+ IEEE80211_CCK_RATE_11MB;
+ }
+ }
+}
+
+
+static int wl1251_op_config_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_if_conf *conf)
+{
+ struct wl1251 *wl = hw->priv;
+ struct sk_buff *beacon;
+ DECLARE_MAC_BUF(mac);
+ bool do_join = false;
+ int ret;
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %s",
+ print_mac(mac, conf->bssid));
+ wl1251_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid,
+ conf->ssid_len);
+
+ mutex_lock(&wl->mutex);
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ if (!is_zero_ether_addr(conf->bssid))
+ do_join = true;
+
+ memcpy(wl->bssid, conf->bssid, ETH_ALEN);
+
+ if (do_join) {
+ ret = wl1251_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 (conf->changed & IEEE80211_IFCC_BEACON) {
+ beacon = ieee80211_beacon_get(hw, vif);
+ wl1251_update_support_rates((struct wl12xx_beacon_template *)
+ beacon->data);
+
+ ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
+ beacon->len);
+
+ if (ret < 0) {
+ dev_kfree_skb(beacon);
+ goto out_sleep;
+ }
+
+ ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
+ beacon->len);
+
+ dev_kfree_skb(beacon);
+
+ if (ret < 0)
+ goto out_sleep;
+ }
+
+ if (do_join) {
+ ret = wl1251_join(wl, wl->bss_type, wl->channel,
+ wl->beacon_int, wl->dtim_period);
+ if (ret < 0)
+ goto out_sleep;
+ }
+
+out_sleep:
+ wl1251_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+static int wl1251_op_config(struct ieee80211_hw *hw,
+ struct ieee80211_conf *conf)
+{
+ struct wl1251 *wl = hw->priv;
+ int channel, ret = 0;
+
+ channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
+
+ wl1251_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 = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ wl->channel = channel;
+
+ if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
+ wl1251_debug(DEBUG_PSM, "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 = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
+ } else if (!(conf->flags & IEEE80211_CONF_PS) &&
+ wl->psm_requested) {
+ wl1251_debug(DEBUG_PSM, "psm disabled");
+
+ wl->psm_requested = false;
+
+ if (wl->psm)
+ ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
+ }
+
+ if (conf->power_level != wl->power_level) {
+ ret = wl1251_acx_tx_power(wl, conf->power_level);
+ if (ret < 0)
+ goto out_sleep;
+
+ wl->power_level = conf->power_level;
+ }
+
+out_sleep:
+ wl1251_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed,
+ unsigned int *total,
+ int mc_count,
+ struct dev_addr_list *mc_list)
+{
+ struct wl1251 *wl = hw->priv;
+ struct wl1251_filter_params *fp;
+ struct dev_addr_list *mc;
+ unsigned long flags;
+ int i;
+ DECLARE_MAC_BUF(mac);
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
+
+ *total &= WL1251_SUPPORTED_FILTERS;
+ changed &= WL1251_SUPPORTED_FILTERS;
+
+ fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
+ if (!fp) {
+ wl1251_error("Out of memory setting filters.");
+ return;
+ }
+
+ /* store current filter config */
+ fp->filters = *total;
+ fp->changed = changed;
+
+ /* update multicast filtering parameters */
+ if (mc_count > ACX_MC_ADDRESS_GROUP_MAX) {
+ mc_count = 0;
+ fp->filters |= FIF_ALLMULTI;
+ }
+
+ fp->mc_list_length = 0;
+ mc = mc_list;
+ for (i = 0; i < mc_count; i++) {
+ if (mc->da_addrlen == ETH_ALEN) {
+ wl1251_debug(DEBUG_MAC80211, "multicast mac %s",
+ print_mac(mac, mc->da_addr));
+ memcpy(fp->mc_list[fp->mc_list_length],
+ mc->da_addr, ETH_ALEN);
+ fp->mc_list_length++;
+ } else {
+ wl1251_warning("Unknown mc address length.");
+ }
+ mc = mc->next;
+ }
+
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ kfree(wl->filter_params);
+ wl->filter_params = fp;
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+ if (changed == 0)
+ /* no filters which we support changed */
+ goto out;
+
+ /* FIXME: wl->rx_config and wl->rx_filter are not protected */
+
+ wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
+ wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
+
+ if (*total & FIF_PROMISC_IN_BSS) {
+ wl->rx_config |= CFG_BSSID_FILTER_EN;
+ wl->rx_config |= CFG_RX_ALL_GOOD;
+ }
+ if (*total & FIF_ALLMULTI)
+ /*
+ * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
+ * all multicast frames
+ */
+ wl->rx_config &= ~CFG_MC_FILTER_EN;
+ if (*total & FIF_FCSFAIL)
+ wl->rx_filter |= CFG_RX_FCS_ERROR;
+ if (*total & FIF_BCN_PRBRESP_PROMISC) {
+ wl->rx_config &= ~CFG_BSSID_FILTER_EN;
+ wl->rx_config &= ~CFG_SSID_FILTER_EN;
+ }
+ if (*total & FIF_CONTROL)
+ wl->rx_filter |= CFG_RX_CTL_EN;
+ if (*total & FIF_OTHER_BSS)
+ wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
+
+out:
+ queue_work(wl->hw->workqueue, &wl->filter_work);
+}
+
+/* HW encryption */
+static int wl1251_set_key_type(struct wl1251 *wl,
+ struct wl1251_cmd_set_keys *key,
+ enum set_key_cmd cmd,
+ struct ieee80211_key_conf *mac80211_key,
+ const u8 *addr)
+{
+ switch (mac80211_key->alg) {
+ case ALG_WEP:
+ if (is_broadcast_ether_addr(addr))
+ key->key_type = KEY_WEP_DEFAULT;
+ else
+ key->key_type = KEY_WEP_ADDR;
+
+ mac80211_key->hw_key_idx = mac80211_key->keyidx;
+ break;
+ case ALG_TKIP:
+ if (is_broadcast_ether_addr(addr))
+ key->key_type = KEY_TKIP_MIC_GROUP;
+ else
+ key->key_type = KEY_TKIP_MIC_PAIRWISE;
+
+ mac80211_key->hw_key_idx = mac80211_key->keyidx;
+ break;
+ case ALG_CCMP:
+ if (is_broadcast_ether_addr(addr))
+ key->key_type = KEY_AES_GROUP;
+ else
+ key->key_type = KEY_AES_PAIRWISE;
+ mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+ break;
+ default:
+ wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
+ const u8 *local_addr, const u8 *addr,
+ struct ieee80211_key_conf *key)
+{
+ struct wl1251 *wl = hw->priv;
+ struct wl1251_cmd_set_keys *wl_cmd;
+ int ret;
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
+
+ wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
+ if (!wl_cmd) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
+ wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
+ wl1251_dump(DEBUG_CRYPT, "LOCAL_ADDR: ", local_addr, ETH_ALEN);
+ wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
+ key->alg, key->keyidx, key->keylen, key->flags);
+ wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
+
+ if (is_zero_ether_addr(addr)) {
+ /* We dont support TX only encryption */
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ mutex_lock(&wl->mutex);
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out_unlock;
+
+ switch (cmd) {
+ case SET_KEY:
+ wl_cmd->key_action = KEY_ADD_OR_REPLACE;
+ break;
+ case DISABLE_KEY:
+ wl_cmd->key_action = KEY_REMOVE;
+ break;
+ default:
+ wl1251_error("Unsupported key cmd 0x%x", cmd);
+ break;
+ }
+
+ ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
+ if (ret < 0) {
+ wl1251_error("Set KEY type failed");
+ goto out_sleep;
+ }
+
+ if (wl_cmd->key_type != KEY_WEP_DEFAULT)
+ memcpy(wl_cmd->addr, addr, ETH_ALEN);
+
+ if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
+ (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
+ /*
+ * We get the key in the following form:
+ * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
+ * but the target is expecting:
+ * TKIP - RX MIC - TX MIC
+ */
+ memcpy(wl_cmd->key, key->key, 16);
+ memcpy(wl_cmd->key + 16, key->key + 24, 8);
+ memcpy(wl_cmd->key + 24, key->key + 16, 8);
+
+ } else {
+ memcpy(wl_cmd->key, key->key, key->keylen);
+ }
+ wl_cmd->key_size = key->keylen;
+
+ wl_cmd->id = key->keyidx;
+ wl_cmd->ssid_profile = 0;
+
+ wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
+
+ ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
+ if (ret < 0) {
+ wl1251_warning("could not set keys");
+ goto out_sleep;
+ }
+
+out_sleep:
+ wl1251_ps_elp_sleep(wl);
+
+out_unlock:
+ mutex_unlock(&wl->mutex);
+
+out:
+ kfree(wl_cmd);
+
+ return ret;
+}
+
+static int wl1251_build_basic_rates(char *rates)
+{
+ u8 index = 0;
+
+ rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
+ rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
+ rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
+ rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
+
+ return index;
+}
+
+static int wl1251_build_extended_rates(char *rates)
+{
+ u8 index = 0;
+
+ rates[index++] = IEEE80211_OFDM_RATE_6MB;
+ rates[index++] = IEEE80211_OFDM_RATE_9MB;
+ rates[index++] = IEEE80211_OFDM_RATE_12MB;
+ rates[index++] = IEEE80211_OFDM_RATE_18MB;
+ rates[index++] = IEEE80211_OFDM_RATE_24MB;
+ rates[index++] = IEEE80211_OFDM_RATE_36MB;
+ rates[index++] = IEEE80211_OFDM_RATE_48MB;
+ rates[index++] = IEEE80211_OFDM_RATE_54MB;
+
+ return index;
+}
+
+
+static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
+{
+ struct wl12xx_probe_req_template template;
+ struct wl12xx_ie_rates *rates;
+ char *ptr;
+ u16 size;
+
+ ptr = (char *)&template;
+ size = sizeof(struct ieee80211_header);
+
+ memset(template.header.da, 0xff, ETH_ALEN);
+ memset(template.header.bssid, 0xff, ETH_ALEN);
+ memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
+ template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
+
+ /* IEs */
+ /* SSID */
+ template.ssid.header.id = WLAN_EID_SSID;
+ template.ssid.header.len = ssid_len;
+ if (ssid_len && ssid)
+ memcpy(template.ssid.ssid, ssid, ssid_len);
+ size += sizeof(struct wl12xx_ie_header) + ssid_len;
+ ptr += size;
+
+ /* Basic Rates */
+ rates = (struct wl12xx_ie_rates *)ptr;
+ rates->header.id = WLAN_EID_SUPP_RATES;
+ rates->header.len = wl1251_build_basic_rates(rates->rates);
+ size += sizeof(struct wl12xx_ie_header) + rates->header.len;
+ ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
+
+ /* Extended rates */
+ rates = (struct wl12xx_ie_rates *)ptr;
+ rates->header.id = WLAN_EID_EXT_SUPP_RATES;
+ rates->header.len = wl1251_build_extended_rates(rates->rates);
+ size += sizeof(struct wl12xx_ie_header) + rates->header.len;
+
+ wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
+
+ return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
+ size);
+}
+
+static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
+ u8 active_scan, u8 high_prio, u8 num_channels,
+ u8 probe_requests)
+{
+ struct wl1251_cmd_trigger_scan_to *trigger = NULL;
+ struct cmd_scan *params = NULL;
+ int i, ret;
+ u16 scan_options = 0;
+
+ if (wl->scanning)
+ return -EINVAL;
+
+ params = kzalloc(sizeof(*params), GFP_KERNEL);
+ if (!params)
+ return -ENOMEM;
+
+ params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
+ params->params.rx_filter_options =
+ cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
+
+ /* High priority scan */
+ if (!active_scan)
+ scan_options |= SCAN_PASSIVE;
+ if (high_prio)
+ scan_options |= SCAN_PRIORITY_HIGH;
+ params->params.scan_options = scan_options;
+
+ params->params.num_channels = num_channels;
+ params->params.num_probe_requests = probe_requests;
+ params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
+ params->params.tid_trigger = 0;
+
+ for (i = 0; i < num_channels; i++) {
+ params->channels[i].min_duration = cpu_to_le32(30000);
+ params->channels[i].max_duration = cpu_to_le32(60000);
+ memset(¶ms->channels[i].bssid_lsb, 0xff, 4);
+ memset(¶ms->channels[i].bssid_msb, 0xff, 2);
+ params->channels[i].early_termination = 0;
+ params->channels[i].tx_power_att = 0;
+ params->channels[i].channel = i + 1;
+ memset(params->channels[i].pad, 0, 3);
+ }
+
+ for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
+ memset(¶ms->channels[i], 0,
+ sizeof(struct basic_scan_channel_parameters));
+
+ if (len && ssid) {
+ params->params.ssid_len = len;
+ memcpy(params->params.ssid, ssid, len);
+ } else {
+ params->params.ssid_len = 0;
+ memset(params->params.ssid, 0, 32);
+ }
+
+ ret = wl1251_build_probe_req(wl, ssid, len);
+ if (ret < 0) {
+ wl1251_error("PROBE request template failed");
+ goto out;
+ }
+
+ trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
+ if (!trigger) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ trigger->timeout = 0;
+
+ ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
+ sizeof(*trigger));
+ if (ret < 0) {
+ wl1251_error("trigger scan to failed for hw scan");
+ goto out;
+ }
+
+ wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
+
+ wl->scanning = true;
+
+ ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
+ if (ret < 0)
+ wl1251_error("SCAN failed");
+
+ wl1251_spi_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
+
+ if (params->header.status != CMD_STATUS_SUCCESS) {
+ wl1251_error("TEST command answer error: %d",
+ params->header.status);
+ wl->scanning = false;
+ ret = -EIO;
+ goto out;
+ }
+
+out:
+ kfree(trigger);
+ kfree(params);
+ return ret;
+
+}
+
+static int wl1251_op_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
+{
+ struct wl1251 *wl = hw->priv;
+ int ret;
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
+
+ mutex_lock(&wl->mutex);
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1251_hw_scan(hw->priv, ssid, len, 1, 0, 13, 3);
+
+ wl1251_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ struct wl1251 *wl = hw->priv;
+ int ret;
+
+ mutex_lock(&wl->mutex);
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1251_acx_rts_threshold(wl, (u16) value);
+ if (ret < 0)
+ wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
+
+ wl1251_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changed)
+{
+ enum wl1251_cmd_ps_mode mode;
+ struct wl1251 *wl = hw->priv;
+ int ret;
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
+
+ mutex_lock(&wl->mutex);
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ if (bss_conf->assoc) {
+ wl->beacon_int = bss_conf->beacon_int;
+ wl->dtim_period = bss_conf->dtim_period;
+
+ ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
+ wl->dtim_period);
+ wl->aid = bss_conf->aid;
+
+ ret = wl1251_build_ps_poll(wl, wl->aid);
+ if (ret < 0)
+ goto out_sleep;
+
+ ret = wl1251_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 = wl1251_ps_set_mode(wl, mode);
+ if (ret < 0)
+ goto out_sleep;
+ }
+ } else {
+ /* use defaults when not associated */
+ wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
+ wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
+ }
+ }
+ if (changed & BSS_CHANGED_ERP_SLOT) {
+ if (bss_conf->use_short_slot)
+ ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
+ else
+ ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
+ if (ret < 0) {
+ wl1251_warning("Set slot time failed %d", ret);
+ goto out_sleep;
+ }
+ }
+
+ if (changed & BSS_CHANGED_ERP_PREAMBLE) {
+ if (bss_conf->use_short_preamble)
+ wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
+ else
+ wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
+ }
+
+ if (changed & BSS_CHANGED_ERP_CTS_PROT) {
+ if (bss_conf->use_cts_prot)
+ ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
+ else
+ ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
+ if (ret < 0) {
+ wl1251_warning("Set ctsprotect failed %d", ret);
+ goto out_sleep;
+ }
+ }
+
+out_sleep:
+ wl1251_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+}
+
+static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct wl1251 *wl = hw->priv;
+ int ret;
+
+ mutex_lock(&wl->mutex);
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
+
+ /* mac80211 txop unit is 32 usecs */
+ ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
+ params->cw_min, params->cw_max,
+ params->aifs, params->txop * 32);
+ if (ret < 0)
+ goto out;
+
+ ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
+ CHANNEL_TYPE_EDCF,
+ wl1251_tx_get_queue(queue),
+ WL1251_ACX_PS_SCHEME_LEGACY,
+ WL1251_ACX_ACK_POLICY_LEGACY);
+ if (ret < 0)
+ goto out;
+
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+/* can't be const, mac80211 writes to this */
+static struct ieee80211_rate wl1251_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 wl1251_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 wl1251_band_2ghz = {
+ .channels = wl1251_channels,
+ .n_channels = ARRAY_SIZE(wl1251_channels),
+ .bitrates = wl1251_rates,
+ .n_bitrates = ARRAY_SIZE(wl1251_rates),
+};
+
+static const struct ieee80211_ops wl1251_ops = {
+ .start = wl1251_op_start,
+ .stop = wl1251_op_stop,
+ .add_interface = wl1251_op_add_interface,
+ .remove_interface = wl1251_op_remove_interface,
+ .config = wl1251_op_config,
+ .config_interface = wl1251_op_config_interface,
+ .configure_filter = wl1251_op_configure_filter,
+ .tx = wl1251_op_tx,
+ .set_key = wl1251_op_set_key,
+ .hw_scan = wl1251_op_hw_scan,
+ .bss_info_changed = wl1251_op_bss_info_changed,
+ .set_rts_threshold = wl1251_op_set_rts_threshold,
+ .conf_tx = wl1251_op_conf_tx,
+};
+
+static int wl1251_register_hw(struct wl1251 *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) {
+ wl1251_error("unable to register mac80211 hw: %d", ret);
+ return ret;
+ }
+
+ wl->mac80211_registered = true;
+
+ wl1251_notice("loaded");
+
+ return 0;
+}
+
+static int wl1251_init_ieee80211(struct wl1251 *wl)
+{
+ /* The tx descriptor buffer and the TKIP space */
+ wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
+ + WL1251_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 |
+ IEEE80211_HW_BEACON_FILTER;
+
+ wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
+
+ wl->hw->queues = 4;
+
+ SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
+
+ return 0;
+}
+
+static void wl1251_device_release(struct device *dev)
+{
+
+}
+
+static struct platform_device wl1251_device = {
+ /* FIXME: use wl12xx name to not break the user space */
+ .name = "wl12xx",
+ .id = -1,
+
+ /* device model insists to have a release function */
+ .dev = {
+ .release = wl1251_device_release,
+ },
+};
+
+static int __devinit wl1251_probe(struct spi_device *spi)
+{
+ struct wl12xx_platform_data *pdata;
+ struct ieee80211_hw *hw;
+ struct wl1251 *wl;
+ int ret, i;
+ static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
+
+ pdata = spi->dev.platform_data;
+ if (!pdata) {
+ wl1251_error("no platform data");
+ return -ENODEV;
+ }
+
+ hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
+ if (!hw) {
+ wl1251_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;
+
+ wl->data_in_count = 0;
+
+ skb_queue_head_init(&wl->tx_queue);
+
+ INIT_WORK(&wl->filter_work, wl1251_filter_work);
+ INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
+ wl->channel = WL1251_DEFAULT_CHANNEL;
+ wl->scanning = false;
+ wl->default_key = 0;
+ wl->listen_int = 1;
+ wl->rx_counter = 0;
+ wl->rx_handled = 0;
+ wl->rx_current_buffer = 0;
+ wl->rx_last_id = 0;
+ wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
+ wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
+ wl->elp = false;
+ wl->psm = 0;
+ wl->psm_requested = false;
+ wl->ps_entry_retry = 0;
+ wl->tx_queue_stopped = false;
+ wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
+ wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
+ wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
+ wl->vif = NULL;
+ wl->bt_coex_mode = WL1251_BT_COEX_OFF;
+ wl->last_event = 0;
+
+ for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
+ wl->tx_frames[i] = NULL;
+
+ wl->next_tx_complete = 0;
+
+ INIT_WORK(&wl->irq_work, wl1251_irq_work);
+ INIT_WORK(&wl->tx_work, wl1251_tx_work);
+
+ 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 = WL1251_STATE_OFF;
+ mutex_init(&wl->mutex);
+
+ wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
+ wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
+
+ wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
+ if (!wl->rx_descriptor) {
+ wl1251_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) {
+ wl1251_error("spi_setup failed");
+ goto out_free;
+ }
+
+ wl->set_power = pdata->set_power;
+ if (!wl->set_power) {
+ wl1251_error("set power function missing in platform data");
+ ret = -ENODEV;
+ goto out_free;
+ }
+
+ wl->irq = spi->irq;
+ if (wl->irq < 0) {
+ wl1251_error("irq missing in platform data");
+ ret = -ENODEV;
+ goto out_free;
+ }
+
+ ret = request_irq(wl->irq, wl1251_irq, 0, DRIVER_NAME, wl);
+ if (ret < 0) {
+ wl1251_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(&wl1251_device);
+ if (ret) {
+ wl1251_error("couldn't register platform device");
+ goto out_irq;
+ }
+ dev_set_drvdata(&wl1251_device.dev, wl);
+
+ ret = wl1251_init_ieee80211(wl);
+ if (ret)
+ goto out_platform;
+
+ ret = wl1251_register_hw(wl);
+ if (ret)
+ goto out_platform;
+
+ ret = wl1251_nl_register();
+ if (ret)
+ goto out_register_hw;
+
+ ret = device_create_file(&wl1251_device.dev,
+ &dev_attr_tx_mgmt_frm_rate);
+ if (ret < 0) {
+ wl1251_error("failed to create sysfs file tx_mgmt_frm_rate");
+ goto out_register_hw;
+ }
+
+ ret = device_create_file(&wl1251_device.dev, &dev_attr_bt_coex_mode);
+ if (ret < 0) {
+ wl1251_error("failed to create sysfs file bt_coex_mode");
+ goto out_register_hw;
+ }
+
+ wl1251_debugfs_init(wl);
+
+ wl1251_notice("initialized");
+
+ return 0;
+
+ out_register_hw:
+ ieee80211_unregister_hw(hw);
+ wl->mac80211_registered = false;
+
+ out_platform:
+ platform_device_unregister(&wl1251_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 wl1251_remove(struct spi_device *spi)
+{
+ struct wl1251 *wl = dev_get_drvdata(&spi->dev);
+
+ ieee80211_unregister_hw(wl->hw);
+
+ wl1251_debugfs_exit(wl);
+ platform_device_unregister(&wl1251_device);
+ free_irq(wl->irq, wl);
+ kfree(wl->target_mem_map);
+ kfree(wl->data_path);
+ vfree(wl->fw);
+ wl->fw = NULL;
+ kfree(wl->nvs);
+ wl->nvs = NULL;
+
+ kfree(wl->rx_descriptor);
+ wl->rx_descriptor = NULL;
+
+ kfree(wl->fw_status);
+
+ ieee80211_free_hw(wl->hw);
+ wl1251_nl_unregister();
+
+ return 0;
+}
+
+
+static struct spi_driver wl1251_spi_driver = {
+ .driver = {
+ /* FIXME: use wl12xx name to not break the user space */
+ .name = "wl12xx",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = wl1251_probe,
+ .remove = __devexit_p(wl1251_remove),
+};
+
+static int __init wl1251_init(void)
+{
+ int ret;
+
+ ret = spi_register_driver(&wl1251_spi_driver);
+ if (ret < 0) {
+ wl1251_error("failed to register spi driver: %d", ret);
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static void __exit wl1251_exit(void)
+{
+ spi_unregister_driver(&wl1251_spi_driver);
+
+ wl1251_notice("unloaded");
+}
+
+module_init(wl1251_init);
+module_exit(wl1251_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
projects / h-e-n / blobdiff