/drivers/net/wireless/mwifiex/util.c

  1/*
  2 * Marvell Wireless LAN device driver: utility functions
  3 *
  4 * Copyright (C) 2011, Marvell International Ltd.
  5 *
  6 * This software file (the "File") is distributed by Marvell International
  7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
  8 * (the "License").  You may use, redistribute and/or modify this File in
  9 * accordance with the terms and conditions of the License, a copy of which
 10 * is available by writing to the Free Software Foundation, Inc.,
 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 13 *
 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 16 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 17 * this warranty disclaimer.
 18 */
 19
 20#include "decl.h"
 21#include "ioctl.h"
 22#include "util.h"
 23#include "fw.h"
 24#include "main.h"
 25#include "wmm.h"
 26#include "11n.h"
 27
 28/*
 29 * Firmware initialization complete callback handler.
 30 *
 31 * This function wakes up the function waiting on the init
 32 * wait queue for the firmware initialization to complete.
 33 */
 34int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter)
 35{
 36
 37	adapter->init_wait_q_woken = true;
 38	wake_up_interruptible(&adapter->init_wait_q);
 39	return 0;
 40}
 41
 42/*
 43 * Firmware shutdown complete callback handler.
 44 *
 45 * This function sets the hardware status to not ready and wakes up
 46 * the function waiting on the init wait queue for the firmware
 47 * shutdown to complete.
 48 */
 49int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter)
 50{
 51	adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY;
 52	adapter->init_wait_q_woken = true;
 53	wake_up_interruptible(&adapter->init_wait_q);
 54	return 0;
 55}
 56
 57/*
 58 * This function sends init/shutdown command
 59 * to firmware.
 60 */
 61int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,
 62			     u32 func_init_shutdown)
 63{
 64	u16 cmd;
 65
 66	if (func_init_shutdown == MWIFIEX_FUNC_INIT) {
 67		cmd = HostCmd_CMD_FUNC_INIT;
 68	} else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) {
 69		cmd = HostCmd_CMD_FUNC_SHUTDOWN;
 70	} else {
 71		dev_err(priv->adapter->dev, "unsupported parameter\n");
 72		return -1;
 73	}
 74
 75	return mwifiex_send_cmd_sync(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL);
 76}
 77EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw);
 78
 79/*
 80 * IOCTL request handler to set/get debug information.
 81 *
 82 * This function collates/sets the information from/to different driver
 83 * structures.
 84 */
 85int mwifiex_get_debug_info(struct mwifiex_private *priv,
 86			   struct mwifiex_debug_info *info)
 87{
 88	struct mwifiex_adapter *adapter = priv->adapter;
 89
 90	if (info) {
 91		memcpy(info->packets_out,
 92		       priv->wmm.packets_out,
 93		       sizeof(priv->wmm.packets_out));
 94		info->max_tx_buf_size = (u32) adapter->max_tx_buf_size;
 95		info->tx_buf_size = (u32) adapter->tx_buf_size;
 96		info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(
 97					priv, info->rx_tbl);
 98		info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(
 99					priv, info->tx_tbl);
100		info->ps_mode = adapter->ps_mode;
101		info->ps_state = adapter->ps_state;
102		info->is_deep_sleep = adapter->is_deep_sleep;
103		info->pm_wakeup_card_req = adapter->pm_wakeup_card_req;
104		info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try;
105		info->is_hs_configured = adapter->is_hs_configured;
106		info->hs_activated = adapter->hs_activated;
107		info->num_cmd_host_to_card_failure
108			= adapter->dbg.num_cmd_host_to_card_failure;
109		info->num_cmd_sleep_cfm_host_to_card_failure
110			= adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure;
111		info->num_tx_host_to_card_failure
112			= adapter->dbg.num_tx_host_to_card_failure;
113		info->num_event_deauth = adapter->dbg.num_event_deauth;
114		info->num_event_disassoc = adapter->dbg.num_event_disassoc;
115		info->num_event_link_lost = adapter->dbg.num_event_link_lost;
116		info->num_cmd_deauth = adapter->dbg.num_cmd_deauth;
117		info->num_cmd_assoc_success =
118			adapter->dbg.num_cmd_assoc_success;
119		info->num_cmd_assoc_failure =
120			adapter->dbg.num_cmd_assoc_failure;
121		info->num_tx_timeout = adapter->dbg.num_tx_timeout;
122		info->num_cmd_timeout = adapter->dbg.num_cmd_timeout;
123		info->timeout_cmd_id = adapter->dbg.timeout_cmd_id;
124		info->timeout_cmd_act = adapter->dbg.timeout_cmd_act;
125		memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id,
126		       sizeof(adapter->dbg.last_cmd_id));
127		memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act,
128		       sizeof(adapter->dbg.last_cmd_act));
129		info->last_cmd_index = adapter->dbg.last_cmd_index;
130		memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id,
131		       sizeof(adapter->dbg.last_cmd_resp_id));
132		info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index;
133		memcpy(info->last_event, adapter->dbg.last_event,
134		       sizeof(adapter->dbg.last_event));
135		info->last_event_index = adapter->dbg.last_event_index;
136		info->data_sent = adapter->data_sent;
137		info->cmd_sent = adapter->cmd_sent;
138		info->cmd_resp_received = adapter->cmd_resp_received;
139	}
140
141	return 0;
142}
143
144/*
145 * This function processes the received packet before sending it to the
146 * kernel.
147 *
148 * It extracts the SKB from the received buffer and sends it to kernel.
149 * In case the received buffer does not contain the data in SKB format,
150 * the function creates a blank SKB, fills it with the data from the
151 * received buffer and then sends this new SKB to the kernel.
152 */
153int mwifiex_recv_packet(struct mwifiex_adapter *adapter, struct sk_buff *skb)
154{
155	struct mwifiex_rxinfo *rx_info;
156	struct mwifiex_private *priv;
157
158	if (!skb)
159		return -1;
160
161	rx_info = MWIFIEX_SKB_RXCB(skb);
162	priv = mwifiex_bss_index_to_priv(adapter, rx_info->bss_index);
163	if (!priv)
164		return -1;
165
166	skb->dev = priv->netdev;
167	skb->protocol = eth_type_trans(skb, priv->netdev);
168	skb->ip_summed = CHECKSUM_NONE;
169	priv->stats.rx_bytes += skb->len;
170	priv->stats.rx_packets++;
171	if (in_interrupt())
172		netif_rx(skb);
173	else
174		netif_rx_ni(skb);
175
176	return 0;
177}
178
179/*
180 * IOCTL completion callback handler.
181 *
182 * This function is called when a pending IOCTL is completed.
183 *
184 * If work queue support is enabled, the function wakes up the
185 * corresponding waiting function. Otherwise, it processes the
186 * IOCTL response and frees the response buffer.
187 */
188int mwifiex_complete_cmd(struct mwifiex_adapter *adapter)
189{
190	atomic_dec(&adapter->cmd_pending);
191	dev_dbg(adapter->dev, "cmd completed: status=%d\n",
192					adapter->cmd_wait_q.status);
193
194	adapter->cmd_wait_q.condition = true;
195
196	if (adapter->cmd_wait_q.status == -ETIMEDOUT)
197		dev_err(adapter->dev, "cmd timeout\n");
198	else
199		wake_up_interruptible(&adapter->cmd_wait_q.wait);
200
201	return 0;
202}