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(COEX_MEDIUM_NOTIFICATION
);
60 IWL_CMD(COEX_EVENT_CMD
);
61 IWL_CMD(RADAR_NOTIFICATION
);
62 IWL_CMD(REPLY_QUIET_CMD
);
63 IWL_CMD(REPLY_CHANNEL_SWITCH
);
64 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION
);
65 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD
);
66 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION
);
67 IWL_CMD(POWER_TABLE_CMD
);
68 IWL_CMD(PM_SLEEP_NOTIFICATION
);
69 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC
);
70 IWL_CMD(REPLY_SCAN_CMD
);
71 IWL_CMD(REPLY_SCAN_ABORT_CMD
);
72 IWL_CMD(SCAN_START_NOTIFICATION
);
73 IWL_CMD(SCAN_RESULTS_NOTIFICATION
);
74 IWL_CMD(SCAN_COMPLETE_NOTIFICATION
);
75 IWL_CMD(BEACON_NOTIFICATION
);
76 IWL_CMD(REPLY_TX_BEACON
);
77 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION
);
78 IWL_CMD(QUIET_NOTIFICATION
);
79 IWL_CMD(REPLY_TX_PWR_TABLE_CMD
);
80 IWL_CMD(MEASURE_ABORT_NOTIFICATION
);
81 IWL_CMD(REPLY_BT_CONFIG
);
82 IWL_CMD(REPLY_STATISTICS_CMD
);
83 IWL_CMD(STATISTICS_NOTIFICATION
);
84 IWL_CMD(REPLY_CARD_STATE_CMD
);
85 IWL_CMD(CARD_STATE_NOTIFICATION
);
86 IWL_CMD(MISSED_BEACONS_NOTIFICATION
);
87 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD
);
88 IWL_CMD(SENSITIVITY_CMD
);
89 IWL_CMD(REPLY_PHY_CALIBRATION_CMD
);
90 IWL_CMD(REPLY_RX_PHY_CMD
);
91 IWL_CMD(REPLY_RX_MPDU_CMD
);
93 IWL_CMD(REPLY_COMPRESSED_BA
);
94 IWL_CMD(CALIBRATION_CFG_CMD
);
95 IWL_CMD(CALIBRATION_RES_NOTIFICATION
);
96 IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION
);
97 IWL_CMD(REPLY_TX_POWER_DBM_CMD
);
98 IWL_CMD(TEMPERATURE_NOTIFICATION
);
99 IWL_CMD(TX_ANT_CONFIGURATION_CMD
);
105 EXPORT_SYMBOL(get_cmd_string
);
107 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
109 static void iwl_generic_cmd_callback(struct iwl_priv
*priv
,
110 struct iwl_device_cmd
*cmd
,
111 struct iwl_rx_packet
*pkt
)
113 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
114 IWL_ERR(priv
, "Bad return from %s (0x%08X)\n",
115 get_cmd_string(cmd
->hdr
.cmd
), pkt
->hdr
.flags
);
119 #ifdef CONFIG_IWLWIFI_DEBUG
120 switch (cmd
->hdr
.cmd
) {
121 case REPLY_TX_LINK_QUALITY_CMD
:
122 case SENSITIVITY_CMD
:
123 IWL_DEBUG_HC_DUMP(priv
, "back from %s (0x%08X)\n",
124 get_cmd_string(cmd
->hdr
.cmd
), pkt
->hdr
.flags
);
127 IWL_DEBUG_HC(priv
, "back from %s (0x%08X)\n",
128 get_cmd_string(cmd
->hdr
.cmd
), pkt
->hdr
.flags
);
133 static int iwl_send_cmd_async(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
137 BUG_ON(!(cmd
->flags
& CMD_ASYNC
));
139 /* An asynchronous command can not expect an SKB to be set. */
140 BUG_ON(cmd
->flags
& CMD_WANT_SKB
);
142 /* Assign a generic callback if one is not provided */
144 cmd
->callback
= iwl_generic_cmd_callback
;
146 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
149 ret
= iwl_enqueue_hcmd(priv
, cmd
);
151 IWL_ERR(priv
, "Error sending %s: enqueue_hcmd failed: %d\n",
152 get_cmd_string(cmd
->id
), ret
);
158 int iwl_send_cmd_sync(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
163 BUG_ON(cmd
->flags
& CMD_ASYNC
);
165 /* A synchronous command can not have a callback set. */
166 BUG_ON(cmd
->callback
);
168 if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE
, &priv
->status
)) {
170 "Error sending %s: Already sending a host command\n",
171 get_cmd_string(cmd
->id
));
176 set_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
178 cmd_idx
= iwl_enqueue_hcmd(priv
, cmd
);
181 IWL_ERR(priv
, "Error sending %s: enqueue_hcmd failed: %d\n",
182 get_cmd_string(cmd
->id
), ret
);
186 ret
= wait_event_interruptible_timeout(priv
->wait_command_queue
,
187 !test_bit(STATUS_HCMD_ACTIVE
, &priv
->status
),
188 HOST_COMPLETE_TIMEOUT
);
190 if (test_bit(STATUS_HCMD_ACTIVE
, &priv
->status
)) {
192 "Error sending %s: time out after %dms.\n",
193 get_cmd_string(cmd
->id
),
194 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT
));
196 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
202 if (test_bit(STATUS_RF_KILL_HW
, &priv
->status
)) {
203 IWL_ERR(priv
, "Command %s aborted: RF KILL Switch\n",
204 get_cmd_string(cmd
->id
));
208 if (test_bit(STATUS_FW_ERROR
, &priv
->status
)) {
209 IWL_ERR(priv
, "Command %s failed: FW Error\n",
210 get_cmd_string(cmd
->id
));
214 if ((cmd
->flags
& CMD_WANT_SKB
) && !cmd
->reply_page
) {
215 IWL_ERR(priv
, "Error: Response NULL in '%s'\n",
216 get_cmd_string(cmd
->id
));
225 if (cmd
->flags
& CMD_WANT_SKB
) {
227 * Cancel the CMD_WANT_SKB flag for the cmd in the
228 * TX cmd queue. Otherwise in case the cmd comes
229 * in later, it will possibly set an invalid
230 * address (cmd->meta.source).
232 priv
->txq
[IWL_CMD_QUEUE_NUM
].meta
[cmd_idx
].flags
&=
236 if (cmd
->reply_page
) {
237 free_pages(cmd
->reply_page
, priv
->hw_params
.rx_page_order
);
241 clear_bit(STATUS_HCMD_SYNC_ACTIVE
, &priv
->status
);
244 EXPORT_SYMBOL(iwl_send_cmd_sync
);
246 int iwl_send_cmd(struct iwl_priv
*priv
, struct iwl_host_cmd
*cmd
)
248 if (cmd
->flags
& CMD_ASYNC
)
249 return iwl_send_cmd_async(priv
, cmd
);
251 return iwl_send_cmd_sync(priv
, cmd
);
253 EXPORT_SYMBOL(iwl_send_cmd
);
255 int iwl_send_cmd_pdu(struct iwl_priv
*priv
, u8 id
, u16 len
, const void *data
)
257 struct iwl_host_cmd cmd
= {
263 return iwl_send_cmd_sync(priv
, &cmd
);
265 EXPORT_SYMBOL(iwl_send_cmd_pdu
);
267 int iwl_send_cmd_pdu_async(struct iwl_priv
*priv
,
268 u8 id
, u16 len
, const void *data
,
269 void (*callback
)(struct iwl_priv
*priv
,
270 struct iwl_device_cmd
*cmd
,
271 struct iwl_rx_packet
*pkt
))
273 struct iwl_host_cmd cmd
= {
279 cmd
.flags
|= CMD_ASYNC
;
280 cmd
.callback
= callback
;
282 return iwl_send_cmd_async(priv
, &cmd
);
284 EXPORT_SYMBOL(iwl_send_cmd_pdu_async
);