1 files changed, 191 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_scan.c b/drivers/net/wireless/wl12xx/wl1271_scan.c
new file mode 100644
index 000000000000..eb9b4ece4ec3
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1271_scan.c
@@ -0,0 +1,191 @@
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 2009-2010 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/ieee80211.h>
+
+#include "wl1271.h"
+#include "wl1271_cmd.h"
+#include "wl1271_scan.h"
+#include "wl1271_acx.h"
+
+int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
+                struct cfg80211_scan_request *req, u8 active_scan,
+                u8 high_prio, u8 band, u8 probe_requests)
+{
+
+        struct wl1271_cmd_trigger_scan_to *trigger = NULL;
+        struct wl1271_cmd_scan *params = NULL;
+        struct ieee80211_channel *channels;
+        u32 rate;
+        int i, j, n_ch, ret;
+        u16 scan_options = 0;
+        u8 ieee_band;
+
+        if (band == WL1271_SCAN_BAND_2_4_GHZ) {
+                ieee_band = IEEE80211_BAND_2GHZ;
+                rate = wl->conf.tx.basic_rate;
+        } else if (band == WL1271_SCAN_BAND_DUAL && wl1271_11a_enabled()) {
+                ieee_band = IEEE80211_BAND_2GHZ;
+                rate = wl->conf.tx.basic_rate;
+        } else if (band == WL1271_SCAN_BAND_5_GHZ && wl1271_11a_enabled()) {
+                ieee_band = IEEE80211_BAND_5GHZ;
+                rate = wl->conf.tx.basic_rate_5;
+        } else
+                return -EINVAL;
+
+        if (wl->hw->wiphy->bands[ieee_band]->channels == NULL)
+                return -EINVAL;
+
+        channels = wl->hw->wiphy->bands[ieee_band]->channels;
+        n_ch = wl->hw->wiphy->bands[ieee_band]->n_channels;
+
+        if (test_bit(WL1271_FLAG_SCANNING, &wl->flags))
+                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);
+
+        if (!active_scan)
+                scan_options |= WL1271_SCAN_OPT_PASSIVE;
+        if (high_prio)
+                scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
+        params->params.scan_options = cpu_to_le16(scan_options);
+
+        params->params.num_probe_requests = probe_requests;
+        params->params.tx_rate = cpu_to_le32(rate);
+        params->params.tid_trigger = 0;
+        params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
+
+        if (band == WL1271_SCAN_BAND_DUAL)
+                params->params.band = WL1271_SCAN_BAND_2_4_GHZ;
+        else
+                params->params.band = band;
+
+        for (i = 0, j = 0; i < n_ch && i < WL1271_SCAN_MAX_CHANNELS; i++) {
+                if (!(channels[i].flags & IEEE80211_CHAN_DISABLED)) {
+                        params->channels[j].min_duration =
+                                cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
+                        params->channels[j].max_duration =
+                                cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
+                        memset(&params->channels[j].bssid_lsb, 0xff, 4);
+                        memset(&params->channels[j].bssid_msb, 0xff, 2);
+                        params->channels[j].early_termination = 0;
+                        params->channels[j].tx_power_att =
+                                WL1271_SCAN_CURRENT_TX_PWR;
+                        params->channels[j].channel = channels[i].hw_value;
+                        j++;
+                }
+        }
+
+        params->params.num_channels = j;
+
+        if (ssid_len && ssid) {
+                params->params.ssid_len = ssid_len;
+                memcpy(params->params.ssid, ssid, ssid_len);
+        }
+
+        ret = wl1271_cmd_build_probe_req(wl, ssid, ssid_len,
+                                         req->ie, req->ie_len, ieee_band);
+        if (ret < 0) {
+                wl1271_error("PROBE request template failed");
+                goto out;
+        }
+
+        trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
+        if (!trigger) {
+                ret = -ENOMEM;
+                goto out;
+        }
+
+        /* disable the timeout */
+        trigger->timeout = 0;
+
+        ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
+                              sizeof(*trigger), 0);
+        if (ret < 0) {
+                wl1271_error("trigger scan to failed for hw scan");
+                goto out;
+        }
+
+        wl1271_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
+
+        set_bit(WL1271_FLAG_SCANNING, &wl->flags);
+        if (wl1271_11a_enabled()) {
+                wl->scan.state = band;
+                if (band == WL1271_SCAN_BAND_DUAL) {
+                        wl->scan.active = active_scan;
+                        wl->scan.high_prio = high_prio;
+                        wl->scan.probe_requests = probe_requests;
+                        if (ssid_len && ssid) {
+                                wl->scan.ssid_len = ssid_len;
+                                memcpy(wl->scan.ssid, ssid, ssid_len);
+                        } else
+                                wl->scan.ssid_len = 0;
+                        wl->scan.req = req;
+                } else
+                        wl->scan.req = NULL;
+        }
+
+        ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params), 0);
+        if (ret < 0) {
+                wl1271_error("SCAN failed");
+                clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
+                goto out;
+        }
+
+out:
+        kfree(params);
+        kfree(trigger);
+        return ret;
+}
+
+int wl1271_scan_complete(struct wl1271 *wl)
+{
+        if (test_bit(WL1271_FLAG_SCANNING, &wl->flags)) {
+                if (wl->scan.state == WL1271_SCAN_BAND_DUAL) {
+                        /* 2.4 GHz band scanned, scan 5 GHz band, pretend to
+                         * the wl1271_scan function that we are not scanning
+                         * as it checks that.
+                         */
+                        clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
+                        /* FIXME: ie missing! */
+                        wl1271_scan(wl, wl->scan.ssid, wl->scan.ssid_len,
+                                    wl->scan.req,
+                                    wl->scan.active,
+                                    wl->scan.high_prio,
+                                    WL1271_SCAN_BAND_5_GHZ,
+                                    wl->scan.probe_requests);
+                } else {
+                        mutex_unlock(&wl->mutex);
+                        ieee80211_scan_completed(wl->hw, false);
+                        mutex_lock(&wl->mutex);
+                        clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
+                }
+        }
+        return 0;
+}