2 * Copyright (c) 2010 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 static const char *wmi_cmd_to_name(enum wmi_cmd_id wmi_cmd)
23 return "WMI_ECHO_CMDID";
24 case WMI_ACCESS_MEMORY_CMDID:
25 return "WMI_ACCESS_MEMORY_CMDID";
26 case WMI_DISABLE_INTR_CMDID:
27 return "WMI_DISABLE_INTR_CMDID";
28 case WMI_ENABLE_INTR_CMDID:
29 return "WMI_ENABLE_INTR_CMDID";
30 case WMI_RX_LINK_CMDID:
31 return "WMI_RX_LINK_CMDID";
32 case WMI_ATH_INIT_CMDID:
33 return "WMI_ATH_INIT_CMDID";
34 case WMI_ABORT_TXQ_CMDID:
35 return "WMI_ABORT_TXQ_CMDID";
36 case WMI_STOP_TX_DMA_CMDID:
37 return "WMI_STOP_TX_DMA_CMDID";
38 case WMI_STOP_DMA_RECV_CMDID:
39 return "WMI_STOP_DMA_RECV_CMDID";
40 case WMI_ABORT_TX_DMA_CMDID:
41 return "WMI_ABORT_TX_DMA_CMDID";
42 case WMI_DRAIN_TXQ_CMDID:
43 return "WMI_DRAIN_TXQ_CMDID";
44 case WMI_DRAIN_TXQ_ALL_CMDID:
45 return "WMI_DRAIN_TXQ_ALL_CMDID";
46 case WMI_START_RECV_CMDID:
47 return "WMI_START_RECV_CMDID";
48 case WMI_STOP_RECV_CMDID:
49 return "WMI_STOP_RECV_CMDID";
50 case WMI_FLUSH_RECV_CMDID:
51 return "WMI_FLUSH_RECV_CMDID";
52 case WMI_SET_MODE_CMDID:
53 return "WMI_SET_MODE_CMDID";
55 return "WMI_RESET_CMDID";
56 case WMI_NODE_CREATE_CMDID:
57 return "WMI_NODE_CREATE_CMDID";
58 case WMI_NODE_REMOVE_CMDID:
59 return "WMI_NODE_REMOVE_CMDID";
60 case WMI_VAP_REMOVE_CMDID:
61 return "WMI_VAP_REMOVE_CMDID";
62 case WMI_VAP_CREATE_CMDID:
63 return "WMI_VAP_CREATE_CMDID";
64 case WMI_BEACON_UPDATE_CMDID:
65 return "WMI_BEACON_UPDATE_CMDID";
66 case WMI_REG_READ_CMDID:
67 return "WMI_REG_READ_CMDID";
68 case WMI_REG_WRITE_CMDID:
69 return "WMI_REG_WRITE_CMDID";
70 case WMI_RC_STATE_CHANGE_CMDID:
71 return "WMI_RC_STATE_CHANGE_CMDID";
72 case WMI_RC_RATE_UPDATE_CMDID:
73 return "WMI_RC_RATE_UPDATE_CMDID";
74 case WMI_DEBUG_INFO_CMDID:
75 return "WMI_DEBUG_INFO_CMDID";
77 return "WMI_HOST_ATTACH";
78 case WMI_TARGET_IC_UPDATE_CMDID:
79 return "WMI_TARGET_IC_UPDATE_CMDID";
80 case WMI_TGT_STATS_CMDID:
81 return "WMI_TGT_STATS_CMDID";
82 case WMI_TX_AGGR_ENABLE_CMDID:
83 return "WMI_TX_AGGR_ENABLE_CMDID";
84 case WMI_TGT_DETACH_CMDID:
85 return "WMI_TGT_DETACH_CMDID";
86 case WMI_TGT_TXQ_ENABLE_CMDID:
87 return "WMI_TGT_TXQ_ENABLE_CMDID";
93 struct wmi *ath9k_init_wmi(struct ath9k_htc_priv *priv)
97 wmi = kzalloc(sizeof(struct wmi), GFP_KERNEL);
101 wmi->drv_priv = priv;
102 wmi->stopped = false;
103 mutex_init(&wmi->op_mutex);
104 init_completion(&wmi->cmd_wait);
109 void ath9k_deinit_wmi(struct ath9k_htc_priv *priv)
111 struct wmi *wmi = priv->wmi;
113 mutex_lock(&wmi->op_mutex);
115 mutex_unlock(&wmi->op_mutex);
120 void ath9k_wmi_tasklet(unsigned long data)
122 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
123 struct ath_common *common = ath9k_hw_common(priv->ah);
124 struct wmi_cmd_hdr *hdr;
125 struct wmi_swba *swba_hdr;
126 enum wmi_event_id event;
130 #ifdef CONFIG_ATH9K_HTC_DEBUGFS
134 spin_lock_irqsave(&priv->wmi->wmi_lock, flags);
135 skb = priv->wmi->wmi_skb;
136 spin_unlock_irqrestore(&priv->wmi->wmi_lock, flags);
138 hdr = (struct wmi_cmd_hdr *) skb->data;
139 event = be16_to_cpu(hdr->command_id);
140 wmi_event = skb_pull(skb, sizeof(struct wmi_cmd_hdr));
142 ath_print(common, ATH_DBG_WMI,
143 "WMI Event: 0x%x\n", event);
146 case WMI_TGT_RDY_EVENTID:
148 case WMI_SWBA_EVENTID:
149 swba_hdr = (struct wmi_swba *) wmi_event;
150 ath9k_htc_swba(priv, swba_hdr->beacon_pending);
152 case WMI_FATAL_EVENTID:
154 case WMI_TXTO_EVENTID:
156 case WMI_BMISS_EVENTID:
158 case WMI_WLAN_TXCOMP_EVENTID:
160 case WMI_DELBA_EVENTID:
162 case WMI_TXRATE_EVENTID:
163 #ifdef CONFIG_ATH9K_HTC_DEBUGFS
164 txrate = ((struct wmi_event_txrate *)wmi_event)->txrate;
165 priv->debug.txrate = be32_to_cpu(txrate);
175 static void ath9k_wmi_rsp_callback(struct wmi *wmi, struct sk_buff *skb)
177 skb_pull(skb, sizeof(struct wmi_cmd_hdr));
179 if (wmi->cmd_rsp_buf != NULL && wmi->cmd_rsp_len != 0)
180 memcpy(wmi->cmd_rsp_buf, skb->data, wmi->cmd_rsp_len);
182 complete(&wmi->cmd_wait);
185 static void ath9k_wmi_ctrl_rx(void *priv, struct sk_buff *skb,
186 enum htc_endpoint_id epid)
188 struct wmi *wmi = (struct wmi *) priv;
189 struct wmi_cmd_hdr *hdr;
192 if (unlikely(wmi->stopped))
195 hdr = (struct wmi_cmd_hdr *) skb->data;
196 cmd_id = be16_to_cpu(hdr->command_id);
198 if (cmd_id & 0x1000) {
199 spin_lock(&wmi->wmi_lock);
201 spin_unlock(&wmi->wmi_lock);
202 tasklet_schedule(&wmi->drv_priv->wmi_tasklet);
206 /* WMI command response */
207 ath9k_wmi_rsp_callback(wmi, skb);
213 static void ath9k_wmi_ctrl_tx(void *priv, struct sk_buff *skb,
214 enum htc_endpoint_id epid, bool txok)
216 dev_kfree_skb_any(skb);
219 int ath9k_wmi_connect(struct htc_target *htc, struct wmi *wmi,
220 enum htc_endpoint_id *wmi_ctrl_epid)
222 struct htc_service_connreq connect;
227 memset(&connect, 0, sizeof(connect));
229 connect.ep_callbacks.priv = wmi;
230 connect.ep_callbacks.tx = ath9k_wmi_ctrl_tx;
231 connect.ep_callbacks.rx = ath9k_wmi_ctrl_rx;
232 connect.service_id = WMI_CONTROL_SVC;
234 ret = htc_connect_service(htc, &connect, &wmi->ctrl_epid);
238 *wmi_ctrl_epid = wmi->ctrl_epid;
243 static int ath9k_wmi_cmd_issue(struct wmi *wmi,
245 enum wmi_cmd_id cmd, u16 len)
247 struct wmi_cmd_hdr *hdr;
249 hdr = (struct wmi_cmd_hdr *) skb_push(skb, sizeof(struct wmi_cmd_hdr));
250 hdr->command_id = cpu_to_be16(cmd);
251 hdr->seq_no = cpu_to_be16(++wmi->tx_seq_id);
253 return htc_send(wmi->htc, skb, wmi->ctrl_epid, NULL);
256 int ath9k_wmi_cmd(struct wmi *wmi, enum wmi_cmd_id cmd_id,
257 u8 *cmd_buf, u32 cmd_len,
258 u8 *rsp_buf, u32 rsp_len,
261 struct ath_hw *ah = wmi->drv_priv->ah;
262 struct ath_common *common = ath9k_hw_common(ah);
263 u16 headroom = sizeof(struct htc_frame_hdr) +
264 sizeof(struct wmi_cmd_hdr);
267 int time_left, ret = 0;
272 skb = dev_alloc_skb(headroom + cmd_len);
276 skb_reserve(skb, headroom);
278 if (cmd_len != 0 && cmd_buf != NULL) {
279 data = (u8 *) skb_put(skb, cmd_len);
280 memcpy(data, cmd_buf, cmd_len);
283 mutex_lock(&wmi->op_mutex);
285 /* check if wmi stopped flag is set */
286 if (unlikely(wmi->stopped)) {
291 /* record the rsp buffer and length */
292 wmi->cmd_rsp_buf = rsp_buf;
293 wmi->cmd_rsp_len = rsp_len;
295 ret = ath9k_wmi_cmd_issue(wmi, skb, cmd_id, cmd_len);
299 time_left = wait_for_completion_timeout(&wmi->cmd_wait, timeout);
301 ath_print(common, ATH_DBG_WMI,
302 "Timeout waiting for WMI command: %s\n",
303 wmi_cmd_to_name(cmd_id));
304 mutex_unlock(&wmi->op_mutex);
308 mutex_unlock(&wmi->op_mutex);
313 ath_print(common, ATH_DBG_WMI,
314 "WMI failure for: %s\n", wmi_cmd_to_name(cmd_id));
315 mutex_unlock(&wmi->op_mutex);
316 dev_kfree_skb_any(skb);