1 /******************************************************************************
5 * Copyright(c) 2008 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 <net/mac80211.h>
33 #include "iwl-dev.h" /* FIXME: remove */
34 #include "iwl-debug.h"
35 #include "iwl-eeprom.h"
39 #define IWL_CMD(x) case x: return #x
41 const char *get_cmd_string(u8 cmd
)
47 IWL_CMD(REPLY_RXON_ASSOC
);
48 IWL_CMD(REPLY_QOS_PARAM
);
49 IWL_CMD(REPLY_RXON_TIMING
);
50 IWL_CMD(REPLY_ADD_STA
);
51 IWL_CMD(REPLY_REMOVE_STA
);
52 IWL_CMD(REPLY_REMOVE_ALL_STA
);
53 IWL_CMD(REPLY_WEPKEY
);
54 IWL_CMD(REPLY_3945_RX
);
56 IWL_CMD(REPLY_RATE_SCALE
);
57 IWL_CMD(REPLY_LEDS_CMD
);
58 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD
);
59 IWL_CMD(COEX_PRIORITY_TABLE_CMD
);
60 IWL_CMD(RADAR_NOTIFICATION
);
61 IWL_CMD(REPLY_QUIET_CMD
);
62 IWL_CMD(REPLY_CHANNEL_SWITCH
);
63 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION
);
64 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD
);
65 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION
);
66 IWL_CMD(POWER_TABLE_CMD
);
67 IWL_CMD(PM_SLEEP_NOTIFICATION
);
68 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC
);
69 IWL_CMD(REPLY_SCAN_CMD
);
70 IWL_CMD(REPLY_SCAN_ABORT_CMD
);
71 IWL_CMD(SCAN_START_NOTIFICATION
);
72 IWL_CMD(SCAN_RESULTS_NOTIFICATION
);
73 IWL_CMD(SCAN_COMPLETE_NOTIFICATION
);
74 IWL_CMD(BEACON_NOTIFICATION
);
75 IWL_CMD(REPLY_TX_BEACON
);
76 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION
);
77 IWL_CMD(QUIET_NOTIFICATION
);
78 IWL_CMD(REPLY_TX_PWR_TABLE_CMD
);
79 IWL_CMD(MEASURE_ABORT_NOTIFICATION
);
80 IWL_CMD(REPLY_BT_CONFIG
);
81 IWL_CMD(REPLY_STATISTICS_CMD
);
82 IWL_CMD(STATISTICS_NOTIFICATION
);
83 IWL_CMD(REPLY_CARD_STATE_CMD
);
84 IWL_CMD(CARD_STATE_NOTIFICATION
);
85 IWL_CMD(MISSED_BEACONS_NOTIFICATION
);
86 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD
);
87 IWL_CMD(SENSITIVITY_CMD
);
88 IWL_CMD(REPLY_PHY_CALIBRATION_CMD
);
89 IWL_CMD(REPLY_RX_PHY_CMD
);
90 IWL_CMD(REPLY_RX_MPDU_CMD
);
92 IWL_CMD(REPLY_COMPRESSED_BA
);
93 IWL_CMD(CALIBRATION_CFG_CMD
);
94 IWL_CMD(CALIBRATION_RES_NOTIFICATION
);
95 IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION
);
96 IWL_CMD(REPLY_TX_POWER_DBM_CMD
);
102 EXPORT_SYMBOL(get_cmd_string
);
104 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
106 static int iwl_generic_cmd_callback(struct iwl_priv
*priv
,
107 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
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("back from %s (0x%08X)\n",
129 get_cmd_string(cmd
->hdr
.cmd
), pkt
->hdr
.flags
);
132 IWL_DEBUG_HC("back from %s (0x%08X)\n",
133 get_cmd_string(cmd
->hdr
.cmd
), pkt
->hdr
.flags
);
137 /* Let iwl_tx_complete free the response skb */
141 static int iwl_send_cmd_async(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
145 BUG_ON(!(cmd
->meta
.flags
& CMD_ASYNC
));
147 /* An asynchronous command can not expect an SKB to be set. */
148 BUG_ON(cmd
->meta
.flags
& CMD_WANT_SKB
);
150 /* Assign a generic callback if one is not provided */
151 if (!cmd
->meta
.u
.callback
)
152 cmd
->meta
.u
.callback
= iwl_generic_cmd_callback
;
154 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
157 ret
= iwl_enqueue_hcmd(priv
, cmd
);
159 IWL_ERR(priv
, "Error sending %s: enqueue_hcmd failed: %d\n",
160 get_cmd_string(cmd
->id
), ret
);
166 int iwl_send_cmd_sync(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
171 BUG_ON(cmd
->meta
.flags
& CMD_ASYNC
);
173 /* A synchronous command can not have a callback set. */
174 BUG_ON(cmd
->meta
.u
.callback
!= NULL
);
176 if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE
, &priv
->status
)) {
178 "Error sending %s: Already sending a host command\n",
179 get_cmd_string(cmd
->id
));
184 set_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
186 if (cmd
->meta
.flags
& CMD_WANT_SKB
)
187 cmd
->meta
.source
= &cmd
->meta
;
189 cmd_idx
= iwl_enqueue_hcmd(priv
, cmd
);
192 IWL_ERR(priv
, "Error sending %s: enqueue_hcmd failed: %d\n",
193 get_cmd_string(cmd
->id
), ret
);
197 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
198 !test_bit(STATUS_HCMD_ACTIVE
, &priv
->status
),
199 HOST_COMPLETE_TIMEOUT
);
201 if (test_bit(STATUS_HCMD_ACTIVE
, &priv
->status
)) {
203 "Error sending %s: time out after %dms.\n",
204 get_cmd_string(cmd
->id
),
205 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT
));
207 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
213 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
214 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
215 get_cmd_string(cmd
->id
));
219 if (test_bit(STATUS_FW_ERROR
, &priv
->status
)) {
220 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
221 get_cmd_string(cmd
->id
));
225 if ((cmd
->meta
.flags
& CMD_WANT_SKB
) && !cmd
->meta
.u
.skb
) {
226 IWL_ERR(priv
, "Error: Response NULL in '%s'\n",
227 get_cmd_string(cmd
->id
));
236 if (cmd
->meta
.flags
& CMD_WANT_SKB
) {
237 struct iwl_cmd
*qcmd
;
239 /* Cancel the CMD_WANT_SKB flag for the cmd in the
240 * TX cmd queue. Otherwise in case the cmd comes
241 * in later, it will possibly set an invalid
242 * address (cmd->meta.source). */
243 qcmd
= priv
->txq
[IWL_CMD_QUEUE_NUM
].cmd
[cmd_idx
];
244 qcmd
->meta
.flags
&= ~CMD_WANT_SKB
;
247 if (cmd
->meta
.u
.skb
) {
248 dev_kfree_skb_any(cmd
->meta
.u
.skb
);
249 cmd
->meta
.u
.skb
= NULL
;
252 clear_bit(STATUS_HCMD_SYNC_ACTIVE
, &priv
->status
);
255 EXPORT_SYMBOL(iwl_send_cmd_sync
);
257 int iwl_send_cmd(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
259 if (cmd
->meta
.flags
& CMD_ASYNC
)
260 return iwl_send_cmd_async(priv
, cmd
);
262 return iwl_send_cmd_sync(priv
, cmd
);
264 EXPORT_SYMBOL(iwl_send_cmd
);
266 int iwl_send_cmd_pdu(struct iwl_priv
*priv
, u8 id
, u16 len
, const void *data
)
268 struct iwl_host_cmd cmd
= {
274 return iwl_send_cmd_sync(priv
, &cmd
);
276 EXPORT_SYMBOL(iwl_send_cmd_pdu
);
278 int iwl_send_cmd_pdu_async(struct iwl_priv
*priv
,
279 u8 id
, u16 len
, const void *data
,
280 int (*callback
)(struct iwl_priv
*priv
,
282 struct sk_buff
*skb
))
284 struct iwl_host_cmd cmd
= {
290 cmd
.meta
.flags
|= CMD_ASYNC
;
291 cmd
.meta
.u
.callback
= callback
;
293 return iwl_send_cmd_async(priv
, &cmd
);
295 EXPORT_SYMBOL(iwl_send_cmd_pdu_async
);