1/* 2 * This file is part of wl1251 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 "wl1251.h" 26#include "wl1251_reg.h" 27#include "wl1251_io.h" 28#include "wl1251_event.h" 29#include "wl1251_ps.h" 30 31static int wl1251_event_scan_complete(struct wl1251 *wl, 32 struct event_mailbox *mbox) 33{ 34 wl1251_debug(DEBUG_EVENT, "status: 0x%x, channels: %d", 35 mbox->scheduled_scan_status, 36 mbox->scheduled_scan_channels); 37 38 if (wl->scanning) { 39 mutex_unlock(&wl->mutex); 40 ieee80211_scan_completed(wl->hw, false); 41 mutex_lock(&wl->mutex); 42 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan completed"); 43 wl->scanning = false; 44 } 45 46 return 0; 47} 48 49static void wl1251_event_mbox_dump(struct event_mailbox *mbox) 50{ 51 wl1251_debug(DEBUG_EVENT, "MBOX DUMP:"); 52 wl1251_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector); 53 wl1251_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask); 54} 55 56static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox) 57{ 58 int ret; 59 u32 vector; 60 61 wl1251_event_mbox_dump(mbox); 62 63 vector = mbox->events_vector & ~(mbox->events_mask); 64 wl1251_debug(DEBUG_EVENT, "vector: 0x%x", vector); 65 66 if (vector & SCAN_COMPLETE_EVENT_ID) { 67 ret = wl1251_event_scan_complete(wl, mbox); 68 if (ret < 0) 69 return ret; 70 } 71 72 if (vector & BSS_LOSE_EVENT_ID) { 73 wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT"); 74 75 if (wl->psm_requested && wl->psm) { 76 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 77 if (ret < 0) 78 return ret; 79 } 80 } 81 82 if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID && wl->psm) { 83 wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT"); 84 85 /* indicate to the stack, that beacons have been lost */ 86 ieee80211_beacon_loss(wl->vif); 87 } 88 89 if (vector & REGAINED_BSS_EVENT_ID) { 90 if (wl->psm_requested) { 91 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 92 if (ret < 0) 93 return ret; 94 } 95 } 96 97 return 0; 98} 99 100int wl1251_event_unmask(struct wl1251 *wl) 101{ 102 int ret; 103 104 ret = wl1251_acx_event_mbox_mask(wl, ~(wl->event_mask)); 105 if (ret < 0) 106 return ret; 107 108 return 0; 109} 110 111void wl1251_event_mbox_config(struct wl1251 *wl) 112{ 113 wl->mbox_ptr[0] = wl1251_reg_read32(wl, REG_EVENT_MAILBOX_PTR); 114 wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox); 115 116 wl1251_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x", 117 wl->mbox_ptr[0], wl->mbox_ptr[1]); 118} 119 120int wl1251_event_handle(struct wl1251 *wl, u8 mbox_num) 121{ 122 struct event_mailbox mbox; 123 int ret; 124 125 wl1251_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num); 126 127 if (mbox_num > 1) 128 return -EINVAL; 129 130 /* first we read the mbox descriptor */ 131 wl1251_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox, 132 sizeof(struct event_mailbox)); 133 134 /* process the descriptor */ 135 ret = wl1251_event_process(wl, &mbox); 136 if (ret < 0) 137 return ret; 138 139 /* then we let the firmware know it can go on...*/ 140 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK); 141 142 return 0; 143} 144