358 lines
8.9 KiB
C
358 lines
8.9 KiB
C
/*
|
|
* Copyright (c) 2010-2011 Atheros Communications Inc.
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include "htc.h"
|
|
|
|
static const char *wmi_cmd_to_name(enum wmi_cmd_id wmi_cmd)
|
|
{
|
|
switch (wmi_cmd) {
|
|
case WMI_ECHO_CMDID:
|
|
return "WMI_ECHO_CMDID";
|
|
case WMI_ACCESS_MEMORY_CMDID:
|
|
return "WMI_ACCESS_MEMORY_CMDID";
|
|
case WMI_GET_FW_VERSION:
|
|
return "WMI_GET_FW_VERSION";
|
|
case WMI_DISABLE_INTR_CMDID:
|
|
return "WMI_DISABLE_INTR_CMDID";
|
|
case WMI_ENABLE_INTR_CMDID:
|
|
return "WMI_ENABLE_INTR_CMDID";
|
|
case WMI_ATH_INIT_CMDID:
|
|
return "WMI_ATH_INIT_CMDID";
|
|
case WMI_ABORT_TXQ_CMDID:
|
|
return "WMI_ABORT_TXQ_CMDID";
|
|
case WMI_STOP_TX_DMA_CMDID:
|
|
return "WMI_STOP_TX_DMA_CMDID";
|
|
case WMI_ABORT_TX_DMA_CMDID:
|
|
return "WMI_ABORT_TX_DMA_CMDID";
|
|
case WMI_DRAIN_TXQ_CMDID:
|
|
return "WMI_DRAIN_TXQ_CMDID";
|
|
case WMI_DRAIN_TXQ_ALL_CMDID:
|
|
return "WMI_DRAIN_TXQ_ALL_CMDID";
|
|
case WMI_START_RECV_CMDID:
|
|
return "WMI_START_RECV_CMDID";
|
|
case WMI_STOP_RECV_CMDID:
|
|
return "WMI_STOP_RECV_CMDID";
|
|
case WMI_FLUSH_RECV_CMDID:
|
|
return "WMI_FLUSH_RECV_CMDID";
|
|
case WMI_SET_MODE_CMDID:
|
|
return "WMI_SET_MODE_CMDID";
|
|
case WMI_NODE_CREATE_CMDID:
|
|
return "WMI_NODE_CREATE_CMDID";
|
|
case WMI_NODE_REMOVE_CMDID:
|
|
return "WMI_NODE_REMOVE_CMDID";
|
|
case WMI_VAP_REMOVE_CMDID:
|
|
return "WMI_VAP_REMOVE_CMDID";
|
|
case WMI_VAP_CREATE_CMDID:
|
|
return "WMI_VAP_CREATE_CMDID";
|
|
case WMI_REG_READ_CMDID:
|
|
return "WMI_REG_READ_CMDID";
|
|
case WMI_REG_WRITE_CMDID:
|
|
return "WMI_REG_WRITE_CMDID";
|
|
case WMI_REG_RMW_CMDID:
|
|
return "WMI_REG_RMW_CMDID";
|
|
case WMI_RC_STATE_CHANGE_CMDID:
|
|
return "WMI_RC_STATE_CHANGE_CMDID";
|
|
case WMI_RC_RATE_UPDATE_CMDID:
|
|
return "WMI_RC_RATE_UPDATE_CMDID";
|
|
case WMI_TARGET_IC_UPDATE_CMDID:
|
|
return "WMI_TARGET_IC_UPDATE_CMDID";
|
|
case WMI_TX_AGGR_ENABLE_CMDID:
|
|
return "WMI_TX_AGGR_ENABLE_CMDID";
|
|
case WMI_TGT_DETACH_CMDID:
|
|
return "WMI_TGT_DETACH_CMDID";
|
|
case WMI_NODE_UPDATE_CMDID:
|
|
return "WMI_NODE_UPDATE_CMDID";
|
|
case WMI_INT_STATS_CMDID:
|
|
return "WMI_INT_STATS_CMDID";
|
|
case WMI_TX_STATS_CMDID:
|
|
return "WMI_TX_STATS_CMDID";
|
|
case WMI_RX_STATS_CMDID:
|
|
return "WMI_RX_STATS_CMDID";
|
|
case WMI_BITRATE_MASK_CMDID:
|
|
return "WMI_BITRATE_MASK_CMDID";
|
|
}
|
|
|
|
return "Bogus";
|
|
}
|
|
|
|
struct wmi *ath9k_init_wmi(struct ath9k_htc_priv *priv)
|
|
{
|
|
struct wmi *wmi;
|
|
|
|
wmi = kzalloc(sizeof(struct wmi), GFP_KERNEL);
|
|
if (!wmi)
|
|
return NULL;
|
|
|
|
wmi->drv_priv = priv;
|
|
wmi->stopped = false;
|
|
skb_queue_head_init(&wmi->wmi_event_queue);
|
|
spin_lock_init(&wmi->wmi_lock);
|
|
spin_lock_init(&wmi->event_lock);
|
|
mutex_init(&wmi->op_mutex);
|
|
mutex_init(&wmi->multi_write_mutex);
|
|
mutex_init(&wmi->multi_rmw_mutex);
|
|
init_completion(&wmi->cmd_wait);
|
|
INIT_LIST_HEAD(&wmi->pending_tx_events);
|
|
tasklet_init(&wmi->wmi_event_tasklet, ath9k_wmi_event_tasklet,
|
|
(unsigned long)wmi);
|
|
|
|
return wmi;
|
|
}
|
|
|
|
void ath9k_stop_wmi(struct ath9k_htc_priv *priv)
|
|
{
|
|
struct wmi *wmi = priv->wmi;
|
|
|
|
mutex_lock(&wmi->op_mutex);
|
|
wmi->stopped = true;
|
|
mutex_unlock(&wmi->op_mutex);
|
|
}
|
|
|
|
void ath9k_destoy_wmi(struct ath9k_htc_priv *priv)
|
|
{
|
|
kfree(priv->wmi);
|
|
}
|
|
|
|
void ath9k_wmi_event_drain(struct ath9k_htc_priv *priv)
|
|
{
|
|
unsigned long flags;
|
|
|
|
tasklet_kill(&priv->wmi->wmi_event_tasklet);
|
|
spin_lock_irqsave(&priv->wmi->wmi_lock, flags);
|
|
__skb_queue_purge(&priv->wmi->wmi_event_queue);
|
|
spin_unlock_irqrestore(&priv->wmi->wmi_lock, flags);
|
|
}
|
|
|
|
void ath9k_wmi_event_tasklet(unsigned long data)
|
|
{
|
|
struct wmi *wmi = (struct wmi *)data;
|
|
struct ath9k_htc_priv *priv = wmi->drv_priv;
|
|
struct wmi_cmd_hdr *hdr;
|
|
void *wmi_event;
|
|
struct wmi_event_swba *swba;
|
|
struct sk_buff *skb = NULL;
|
|
unsigned long flags;
|
|
u16 cmd_id;
|
|
|
|
do {
|
|
spin_lock_irqsave(&wmi->wmi_lock, flags);
|
|
skb = __skb_dequeue(&wmi->wmi_event_queue);
|
|
if (!skb) {
|
|
spin_unlock_irqrestore(&wmi->wmi_lock, flags);
|
|
return;
|
|
}
|
|
spin_unlock_irqrestore(&wmi->wmi_lock, flags);
|
|
|
|
hdr = (struct wmi_cmd_hdr *) skb->data;
|
|
cmd_id = be16_to_cpu(hdr->command_id);
|
|
wmi_event = skb_pull(skb, sizeof(struct wmi_cmd_hdr));
|
|
|
|
switch (cmd_id) {
|
|
case WMI_SWBA_EVENTID:
|
|
swba = (struct wmi_event_swba *) wmi_event;
|
|
ath9k_htc_swba(priv, swba);
|
|
break;
|
|
case WMI_FATAL_EVENTID:
|
|
ieee80211_queue_work(wmi->drv_priv->hw,
|
|
&wmi->drv_priv->fatal_work);
|
|
break;
|
|
case WMI_TXSTATUS_EVENTID:
|
|
spin_lock_bh(&priv->tx.tx_lock);
|
|
if (priv->tx.flags & ATH9K_HTC_OP_TX_DRAIN) {
|
|
spin_unlock_bh(&priv->tx.tx_lock);
|
|
break;
|
|
}
|
|
spin_unlock_bh(&priv->tx.tx_lock);
|
|
|
|
ath9k_htc_txstatus(priv, wmi_event);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
kfree_skb(skb);
|
|
} while (1);
|
|
}
|
|
|
|
void ath9k_fatal_work(struct work_struct *work)
|
|
{
|
|
struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
|
|
fatal_work);
|
|
struct ath_common *common = ath9k_hw_common(priv->ah);
|
|
|
|
ath_dbg(common, FATAL, "FATAL Event received, resetting device\n");
|
|
ath9k_htc_reset(priv);
|
|
}
|
|
|
|
static void ath9k_wmi_rsp_callback(struct wmi *wmi, struct sk_buff *skb)
|
|
{
|
|
skb_pull(skb, sizeof(struct wmi_cmd_hdr));
|
|
|
|
if (wmi->cmd_rsp_buf != NULL && wmi->cmd_rsp_len != 0)
|
|
memcpy(wmi->cmd_rsp_buf, skb->data, wmi->cmd_rsp_len);
|
|
|
|
complete(&wmi->cmd_wait);
|
|
}
|
|
|
|
static void ath9k_wmi_ctrl_rx(void *priv, struct sk_buff *skb,
|
|
enum htc_endpoint_id epid)
|
|
{
|
|
struct wmi *wmi = (struct wmi *) priv;
|
|
struct wmi_cmd_hdr *hdr;
|
|
u16 cmd_id;
|
|
|
|
if (unlikely(wmi->stopped))
|
|
goto free_skb;
|
|
|
|
hdr = (struct wmi_cmd_hdr *) skb->data;
|
|
cmd_id = be16_to_cpu(hdr->command_id);
|
|
|
|
if (cmd_id & 0x1000) {
|
|
spin_lock(&wmi->wmi_lock);
|
|
__skb_queue_tail(&wmi->wmi_event_queue, skb);
|
|
spin_unlock(&wmi->wmi_lock);
|
|
tasklet_schedule(&wmi->wmi_event_tasklet);
|
|
return;
|
|
}
|
|
|
|
/* Check if there has been a timeout. */
|
|
spin_lock(&wmi->wmi_lock);
|
|
if (be16_to_cpu(hdr->seq_no) != wmi->last_seq_id) {
|
|
spin_unlock(&wmi->wmi_lock);
|
|
goto free_skb;
|
|
}
|
|
spin_unlock(&wmi->wmi_lock);
|
|
|
|
/* WMI command response */
|
|
ath9k_wmi_rsp_callback(wmi, skb);
|
|
|
|
free_skb:
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
static void ath9k_wmi_ctrl_tx(void *priv, struct sk_buff *skb,
|
|
enum htc_endpoint_id epid, bool txok)
|
|
{
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
int ath9k_wmi_connect(struct htc_target *htc, struct wmi *wmi,
|
|
enum htc_endpoint_id *wmi_ctrl_epid)
|
|
{
|
|
struct htc_service_connreq connect;
|
|
int ret;
|
|
|
|
wmi->htc = htc;
|
|
|
|
memset(&connect, 0, sizeof(connect));
|
|
|
|
connect.ep_callbacks.priv = wmi;
|
|
connect.ep_callbacks.tx = ath9k_wmi_ctrl_tx;
|
|
connect.ep_callbacks.rx = ath9k_wmi_ctrl_rx;
|
|
connect.service_id = WMI_CONTROL_SVC;
|
|
|
|
ret = htc_connect_service(htc, &connect, &wmi->ctrl_epid);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*wmi_ctrl_epid = wmi->ctrl_epid;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ath9k_wmi_cmd_issue(struct wmi *wmi,
|
|
struct sk_buff *skb,
|
|
enum wmi_cmd_id cmd, u16 len)
|
|
{
|
|
struct wmi_cmd_hdr *hdr;
|
|
unsigned long flags;
|
|
|
|
hdr = (struct wmi_cmd_hdr *) skb_push(skb, sizeof(struct wmi_cmd_hdr));
|
|
hdr->command_id = cpu_to_be16(cmd);
|
|
hdr->seq_no = cpu_to_be16(++wmi->tx_seq_id);
|
|
|
|
spin_lock_irqsave(&wmi->wmi_lock, flags);
|
|
wmi->last_seq_id = wmi->tx_seq_id;
|
|
spin_unlock_irqrestore(&wmi->wmi_lock, flags);
|
|
|
|
return htc_send_epid(wmi->htc, skb, wmi->ctrl_epid);
|
|
}
|
|
|
|
int ath9k_wmi_cmd(struct wmi *wmi, enum wmi_cmd_id cmd_id,
|
|
u8 *cmd_buf, u32 cmd_len,
|
|
u8 *rsp_buf, u32 rsp_len,
|
|
u32 timeout)
|
|
{
|
|
struct ath_hw *ah = wmi->drv_priv->ah;
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
|
u16 headroom = sizeof(struct htc_frame_hdr) +
|
|
sizeof(struct wmi_cmd_hdr);
|
|
struct sk_buff *skb;
|
|
u8 *data;
|
|
unsigned long time_left;
|
|
int ret = 0;
|
|
|
|
if (ah->ah_flags & AH_UNPLUGGED)
|
|
return 0;
|
|
|
|
skb = alloc_skb(headroom + cmd_len, GFP_ATOMIC);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_reserve(skb, headroom);
|
|
|
|
if (cmd_len != 0 && cmd_buf != NULL) {
|
|
data = (u8 *) skb_put(skb, cmd_len);
|
|
memcpy(data, cmd_buf, cmd_len);
|
|
}
|
|
|
|
mutex_lock(&wmi->op_mutex);
|
|
|
|
/* check if wmi stopped flag is set */
|
|
if (unlikely(wmi->stopped)) {
|
|
ret = -EPROTO;
|
|
goto out;
|
|
}
|
|
|
|
/* record the rsp buffer and length */
|
|
wmi->cmd_rsp_buf = rsp_buf;
|
|
wmi->cmd_rsp_len = rsp_len;
|
|
|
|
ret = ath9k_wmi_cmd_issue(wmi, skb, cmd_id, cmd_len);
|
|
if (ret)
|
|
goto out;
|
|
|
|
time_left = wait_for_completion_timeout(&wmi->cmd_wait, timeout);
|
|
if (!time_left) {
|
|
ath_dbg(common, WMI, "Timeout waiting for WMI command: %s\n",
|
|
wmi_cmd_to_name(cmd_id));
|
|
mutex_unlock(&wmi->op_mutex);
|
|
kfree_skb(skb);
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
mutex_unlock(&wmi->op_mutex);
|
|
|
|
return 0;
|
|
|
|
out:
|
|
ath_dbg(common, WMI, "WMI failure for: %s\n", wmi_cmd_to_name(cmd_id));
|
|
mutex_unlock(&wmi->op_mutex);
|
|
kfree_skb(skb);
|
|
|
|
return ret;
|
|
}
|