wl1251: move to it's own directory

[pandora-kernel.git] / drivers / net / wireless / wl1251 / event.c

diff --git a/drivers/net/wireless/wl1251/event.c b/drivers/net/wireless/wl1251/event.c
new file mode 100644 (file)
index 0000000..712372e
--- /dev/null
+++ b/drivers/net/wireless/wl1251/event.c
@@ -0,0 +1,168 @@
+/*
+ * 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->psm) {
+                       ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
+                       if (ret < 0)
+                               return ret;
+               }
+       }
+
+       if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID && wl->psm) {
+               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;
+               }
+       }
+
+       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;
+}