1 files changed, 188 insertions, 0 deletions

diff --git a/drivers/net/wireless/ti/wl1251/event.c b/drivers/net/wireless/ti/wl1251/event.c
new file mode 100644
index 000000000000..9f15ccaf8f05
--- /dev/null
+++ b/drivers/net/wireless/ti/wl1251/event.c
@@ -0,0 +1,188 @@
+/*
+ * This file is part of wl1251
+ *
+ * Copyright (c) 1998-2007 Texas Instruments Incorporated
+ * Copyright (C) 2008 Nokia Corporation
+ *
+ * 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 "wl1251.h"
+#include "reg.h"
+#include "io.h"
+#include "event.h"
+#include "ps.h"
+
+static int wl1251_event_scan_complete(struct wl1251 *wl,
+                                      struct event_mailbox *mbox)
+{
+        wl1251_debug(DEBUG_EVENT, "status: 0x%x, channels: %d",
+                     mbox->scheduled_scan_status,
+                     mbox->scheduled_scan_channels);
+
+        if (wl->scanning) {
+                ieee80211_scan_completed(wl->hw, false);
+                wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan completed");
+                wl->scanning = false;
+        }
+
+        return 0;
+}
+
+static void wl1251_event_mbox_dump(struct event_mailbox *mbox)
+{
+        wl1251_debug(DEBUG_EVENT, "MBOX DUMP:");
+        wl1251_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
+        wl1251_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
+}
+
+static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
+{
+        int ret;
+        u32 vector;
+
+        wl1251_event_mbox_dump(mbox);
+
+        vector = mbox->events_vector & ~(mbox->events_mask);
+        wl1251_debug(DEBUG_EVENT, "vector: 0x%x", vector);
+
+        if (vector & SCAN_COMPLETE_EVENT_ID) {
+                ret = wl1251_event_scan_complete(wl, mbox);
+                if (ret < 0)
+                        return ret;
+        }
+
+        if (vector & BSS_LOSE_EVENT_ID) {
+                wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
+
+                if (wl->psm_requested &&
+                    wl->station_mode != STATION_ACTIVE_MODE) {
+                        ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
+                        if (ret < 0)
+                                return ret;
+                }
+        }
+
+        if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID &&
+            wl->station_mode != STATION_ACTIVE_MODE) {
+                wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");
+
+                /* indicate to the stack, that beacons have been lost */
+                ieee80211_beacon_loss(wl->vif);
+        }
+
+        if (vector & REGAINED_BSS_EVENT_ID) {
+                if (wl->psm_requested) {
+                        ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
+                        if (ret < 0)
+                                return ret;
+                }
+        }
+
+        if (wl->vif && wl->rssi_thold) {
+                if (vector & ROAMING_TRIGGER_LOW_RSSI_EVENT_ID) {
+                        wl1251_debug(DEBUG_EVENT,
+                                     "ROAMING_TRIGGER_LOW_RSSI_EVENT");
+                        ieee80211_cqm_rssi_notify(wl->vif,
+                                NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
+                                GFP_KERNEL);
+                }
+
+                if (vector & ROAMING_TRIGGER_REGAINED_RSSI_EVENT_ID) {
+                        wl1251_debug(DEBUG_EVENT,
+                                     "ROAMING_TRIGGER_REGAINED_RSSI_EVENT");
+                        ieee80211_cqm_rssi_notify(wl->vif,
+                                NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
+                                GFP_KERNEL);
+                }
+        }
+
+        return 0;
+}
+
+/*
+ * Poll the mailbox event field until any of the bits in the mask is set or a
+ * timeout occurs (WL1251_EVENT_TIMEOUT in msecs)
+ */
+int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms)
+{
+        u32 events_vector, event;
+        unsigned long timeout;
+
+        timeout = jiffies + msecs_to_jiffies(timeout_ms);
+
+        do {
+                if (time_after(jiffies, timeout))
+                        return -ETIMEDOUT;
+
+                msleep(1);
+
+                /* read from both event fields */
+                wl1251_mem_read(wl, wl->mbox_ptr[0], &events_vector,
+                                sizeof(events_vector));
+                event = events_vector & mask;
+                wl1251_mem_read(wl, wl->mbox_ptr[1], &events_vector,
+                                sizeof(events_vector));
+                event |= events_vector & mask;
+        } while (!event);
+
+        return 0;
+}
+
+int wl1251_event_unmask(struct wl1251 *wl)
+{
+        int ret;
+
+        ret = wl1251_acx_event_mbox_mask(wl, ~(wl->event_mask));
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+void wl1251_event_mbox_config(struct wl1251 *wl)
+{
+        wl->mbox_ptr[0] = wl1251_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
+        wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
+
+        wl1251_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
+                     wl->mbox_ptr[0], wl->mbox_ptr[1]);
+}
+
+int wl1251_event_handle(struct wl1251 *wl, u8 mbox_num)
+{
+        struct event_mailbox mbox;
+        int ret;
+
+        wl1251_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
+
+        if (mbox_num > 1)
+                return -EINVAL;
+
+        /* first we read the mbox descriptor */
+        wl1251_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox,
+                            sizeof(struct event_mailbox));
+
+        /* process the descriptor */
+        ret = wl1251_event_process(wl, &mbox);
+        if (ret < 0)
+                return ret;
+
+        /* then we let the firmware know it can go on...*/
+        wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);
+
+        return 0;
+}