1 /******************************************************************************
5 * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/sched.h>
32 #include <net/mac80211.h>
34 #include "iwl-dev.h" /* FIXME: remove */
35 #include "iwl-debug.h"
36 #include "iwl-eeprom.h"
40 const char *get_cmd_string(u8 cmd)
46 IWL_CMD(REPLY_RXON_ASSOC);
47 IWL_CMD(REPLY_QOS_PARAM);
48 IWL_CMD(REPLY_RXON_TIMING);
49 IWL_CMD(REPLY_ADD_STA);
50 IWL_CMD(REPLY_REMOVE_STA);
51 IWL_CMD(REPLY_REMOVE_ALL_STA);
52 IWL_CMD(REPLY_WEPKEY);
53 IWL_CMD(REPLY_3945_RX);
55 IWL_CMD(REPLY_RATE_SCALE);
56 IWL_CMD(REPLY_LEDS_CMD);
57 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
58 IWL_CMD(COEX_PRIORITY_TABLE_CMD);
59 IWL_CMD(RADAR_NOTIFICATION);
60 IWL_CMD(REPLY_QUIET_CMD);
61 IWL_CMD(REPLY_CHANNEL_SWITCH);
62 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
63 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
64 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
65 IWL_CMD(POWER_TABLE_CMD);
66 IWL_CMD(PM_SLEEP_NOTIFICATION);
67 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
68 IWL_CMD(REPLY_SCAN_CMD);
69 IWL_CMD(REPLY_SCAN_ABORT_CMD);
70 IWL_CMD(SCAN_START_NOTIFICATION);
71 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
72 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
73 IWL_CMD(BEACON_NOTIFICATION);
74 IWL_CMD(REPLY_TX_BEACON);
75 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
76 IWL_CMD(QUIET_NOTIFICATION);
77 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
78 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
79 IWL_CMD(REPLY_BT_CONFIG);
80 IWL_CMD(REPLY_STATISTICS_CMD);
81 IWL_CMD(STATISTICS_NOTIFICATION);
82 IWL_CMD(REPLY_CARD_STATE_CMD);
83 IWL_CMD(CARD_STATE_NOTIFICATION);
84 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
85 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
86 IWL_CMD(SENSITIVITY_CMD);
87 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
88 IWL_CMD(REPLY_RX_PHY_CMD);
89 IWL_CMD(REPLY_RX_MPDU_CMD);
91 IWL_CMD(REPLY_COMPRESSED_BA);
92 IWL_CMD(CALIBRATION_CFG_CMD);
93 IWL_CMD(CALIBRATION_RES_NOTIFICATION);
94 IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION);
95 IWL_CMD(REPLY_TX_POWER_DBM_CMD);
101 EXPORT_SYMBOL(get_cmd_string);
103 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
105 static void iwl_generic_cmd_callback(struct iwl_priv *priv,
106 struct iwl_device_cmd *cmd,
109 struct iwl_rx_packet *pkt = NULL;
112 IWL_ERR(priv, "Error: Response NULL in %s.\n",
113 get_cmd_string(cmd->hdr.cmd));
117 pkt = (struct iwl_rx_packet *)skb->data;
118 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
119 IWL_ERR(priv, "Bad return from %s (0x%08X)\n",
120 get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
124 #ifdef CONFIG_IWLWIFI_DEBUG
125 switch (cmd->hdr.cmd) {
126 case REPLY_TX_LINK_QUALITY_CMD:
127 case SENSITIVITY_CMD:
128 IWL_DEBUG_HC_DUMP(priv, "back from %s (0x%08X)\n",
129 get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
132 IWL_DEBUG_HC(priv, "back from %s (0x%08X)\n",
133 get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
138 static int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
142 BUG_ON(!(cmd->flags & CMD_ASYNC));
144 /* An asynchronous command can not expect an SKB to be set. */
145 BUG_ON(cmd->flags & CMD_WANT_SKB);
147 /* Assign a generic callback if one is not provided */
149 cmd->callback = iwl_generic_cmd_callback;
151 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
154 ret = iwl_enqueue_hcmd(priv, cmd);
156 IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n",
157 get_cmd_string(cmd->id), ret);
163 int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
168 BUG_ON(cmd->flags & CMD_ASYNC);
170 /* A synchronous command can not have a callback set. */
171 BUG_ON(cmd->callback);
173 if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
175 "Error sending %s: Already sending a host command\n",
176 get_cmd_string(cmd->id));
181 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
183 cmd_idx = iwl_enqueue_hcmd(priv, cmd);
186 IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n",
187 get_cmd_string(cmd->id), ret);
191 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
192 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
193 HOST_COMPLETE_TIMEOUT);
195 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
197 "Error sending %s: time out after %dms.\n",
198 get_cmd_string(cmd->id),
199 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
201 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
207 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
208 IWL_DEBUG_INFO(priv, "Command %s aborted: RF KILL Switch\n",
209 get_cmd_string(cmd->id));
213 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
214 IWL_DEBUG_INFO(priv, "Command %s failed: FW Error\n",
215 get_cmd_string(cmd->id));
219 if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_skb) {
220 IWL_ERR(priv, "Error: Response NULL in '%s'\n",
221 get_cmd_string(cmd->id));
230 if (cmd->flags & CMD_WANT_SKB) {
232 * Cancel the CMD_WANT_SKB flag for the cmd in the
233 * TX cmd queue. Otherwise in case the cmd comes
234 * in later, it will possibly set an invalid
235 * address (cmd->meta.source).
237 priv->txq[IWL_CMD_QUEUE_NUM].meta[cmd_idx].flags &=
241 if (cmd->reply_skb) {
242 dev_kfree_skb_any(cmd->reply_skb);
243 cmd->reply_skb = NULL;
246 clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
249 EXPORT_SYMBOL(iwl_send_cmd_sync);
251 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
253 if (cmd->flags & CMD_ASYNC)
254 return iwl_send_cmd_async(priv, cmd);
256 return iwl_send_cmd_sync(priv, cmd);
258 EXPORT_SYMBOL(iwl_send_cmd);
260 int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
262 struct iwl_host_cmd cmd = {
268 return iwl_send_cmd_sync(priv, &cmd);
270 EXPORT_SYMBOL(iwl_send_cmd_pdu);
272 int iwl_send_cmd_pdu_async(struct iwl_priv *priv,
273 u8 id, u16 len, const void *data,
274 void (*callback)(struct iwl_priv *priv,
275 struct iwl_device_cmd *cmd,
276 struct sk_buff *skb))
278 struct iwl_host_cmd cmd = {
284 cmd.flags |= CMD_ASYNC;
285 cmd.callback = callback;
287 return iwl_send_cmd_async(priv, &cmd);
289 EXPORT_SYMBOL(iwl_send_cmd_pdu_async);