git.maemo.org Git - h-e-n/blob - drivers/net/wireless/wl12xx/wl1271_event.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (c) 1998-2007 Texas Instruments Incorporated
   5  * Copyright (C) 2008 Nokia Corporation
   6  *
   7  * Contact: Kalle Valo <kalle.valo@nokia.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * version 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 #include "wl1271.h"
  26 #include "wl1271_reg.h"
  27 #include "wl1271_spi.h"
  28 #include "wl1271_event.h"
  29 #include "wl1271_ps.h"
  30
  31 static int wl1271_event_scan_complete(struct wl1271 *wl,
  32                                       struct event_mailbox *mbox)
  33 {
  34         wl1271_debug(DEBUG_EVENT, "status: 0x%x",
  35                      mbox->scheduled_scan_status);
  36
  37         if (wl->scanning) {
  38                 mutex_unlock(&wl->mutex);
  39                 ieee80211_scan_completed(wl->hw);
  40                 mutex_lock(&wl->mutex);
  41                 wl->scanning = false;
  42         }
  43
  44         return 0;
  45 }
  46
  47 static void wl1271_event_mbox_dump(struct event_mailbox *mbox)
  48 {
  49         wl1271_debug(DEBUG_EVENT, "MBOX DUMP:");
  50         wl1271_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
  51         wl1271_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
  52 }
  53
  54 static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
  55 {
  56         int ret;
  57         u32 vector;
  58
  59         wl1271_event_mbox_dump(mbox);
  60
  61         vector = mbox->events_vector & ~(mbox->events_mask);
  62         wl1271_debug(DEBUG_EVENT, "vector: 0x%x", vector);
  63
  64         if (vector & SCAN_COMPLETE_EVENT_ID) {
  65                 ret = wl1271_event_scan_complete(wl, mbox);
  66                 if (ret < 0)
  67                         return ret;
  68         }
  69
  70         if (vector & BSS_LOSE_EVENT_ID) {
  71                 wl1271_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
  72
  73                 if (wl->psm_requested && wl->psm) {
  74                         ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
  75                         if (ret < 0)
  76                                 return ret;
  77                 }
  78         }
  79
  80         return 0;
  81 }
  82
  83 int wl1271_event_unmask(struct wl1271 *wl)
  84 {
  85         int ret;
  86
  87         ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask));
  88         if (ret < 0)
  89                 return ret;
  90
  91         return 0;
  92 }
  93
  94 void wl1271_event_mbox_config(struct wl1271 *wl)
  95 {
  96         wl->mbox_ptr[0] = wl1271_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
  97         wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
  98
  99         wl1271_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
 100                      wl->mbox_ptr[0], wl->mbox_ptr[1]);
 101 }
 102
 103 int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
 104 {
 105         struct event_mailbox mbox;
 106         int ret;
 107
 108         wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
 109
 110         if (mbox_num > 1)
 111                 return -EINVAL;
 112
 113         /* first we read the mbox descriptor */
 114         wl1271_spi_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox,
 115                             sizeof(struct event_mailbox));
 116
 117         /* process the descriptor */
 118         ret = wl1271_event_process(wl, &mbox);
 119         if (ret < 0)
 120                 return ret;
 121
 122         /* then we let the firmware know it can go on...*/
 123         wl1271_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);
 124
 125         return 0;
 126 }