int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len)
{
uint16_t respcmd, curcmd;
struct cmd_header *resp;
int ret = 0;
unsigned long flags;
uint16_t result;
lbs_deb_enter(LBS_DEB_HOST);
mutex_lock(&priv->lock);
spin_lock_irqsave(&priv->driver_lock, flags);
if (!priv->cur_cmd) {
lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
ret = -1;
spin_unlock_irqrestore(&priv->driver_lock, flags);
goto done;
}
resp = (void *)data;
curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
respcmd = le16_to_cpu(resp->command);
result = le16_to_cpu(resp->result);
lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
respcmd, le16_to_cpu(resp->seqnum), len);
lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);
if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
if (respcmd != CMD_RET(curcmd) &&
respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
if (resp->result == cpu_to_le16(0x0004)) {
/* 0x0004 means -EAGAIN. Drop the response, let it time out
and be resubmitted */
lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
le16_to_cpu(resp->command));
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
/* Now we got response from FW, cancel the command timer */
del_timer(&priv->command_timer);
priv->cmd_timed_out = 0;
if (priv->nr_retries) {
lbs_pr_info("Received result %x to command %x after %d retries\n",
result, curcmd, priv->nr_retries);
priv->nr_retries = 0;
}
/* Store the response code to cur_cmd_retcode. */
priv->cur_cmd_retcode = result;
if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
u16 action = le16_to_cpu(psmode->action);
lbs_deb_host(
"CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
result, action);
if (result) {
lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
result);
/*
* We should not re-try enter-ps command in
* ad-hoc mode. It takes place in
* lbs_execute_next_command().
*/
if (priv->mode == IW_MODE_ADHOC &&
action == CMD_SUBCMD_ENTER_PS)
priv->psmode = LBS802_11POWERMODECAM;
} else if (action == CMD_SUBCMD_ENTER_PS) {
priv->needtowakeup = 0;
priv->psstate = PS_STATE_AWAKE;
lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
if (priv->connect_status != LBS_CONNECTED) {
/*
* When Deauth Event received before Enter_PS command
* response, We need to wake up the firmware.
*/
lbs_deb_host(
"disconnected, invoking lbs_ps_wakeup\n");
spin_unlock_irqrestore(&priv->driver_lock, flags);
mutex_unlock(&priv->lock);
lbs_ps_wakeup(priv, 0);
mutex_lock(&priv->lock);
spin_lock_irqsave(&priv->driver_lock, flags);
}
} else if (action == CMD_SUBCMD_EXIT_PS) {
priv->needtowakeup = 0;
priv->psstate = PS_STATE_FULL_POWER;
lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
} else {
lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
}
lbs_complete_command(priv, priv->cur_cmd, result);
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = 0;
goto done;
}
/* If the command is not successful, cleanup and return failure */
if ((result != 0 || !(respcmd & 0x8000))) {
lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
result, respcmd);
/*
* Handling errors here
*/
switch (respcmd) {
case CMD_RET(CMD_GET_HW_SPEC):
case CMD_RET(CMD_802_11_RESET):
lbs_deb_host("CMD_RESP: reset failed\n");
break;
}
lbs_complete_command(priv, priv->cur_cmd, result);
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
if (priv->cur_cmd && priv->cur_cmd->callback) {
ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
resp);
} else
ret = handle_cmd_response(priv, resp);
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->cur_cmd) {
/* Clean up and Put current command back to cmdfreeq */
lbs_complete_command(priv, priv->cur_cmd, result);
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
done:
mutex_unlock(&priv->lock);
lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
return ret;
}
int libertas_process_rx_command(wlan_private * priv)
{
u16 respcmd;
struct cmd_ds_command *resp;
wlan_adapter *adapter = priv->adapter;
int ret = 0;
ulong flags;
u16 result;
lbs_deb_enter(LBS_DEB_HOST);
/* Now we got response from FW, cancel the command timer */
del_timer(&adapter->command_timer);
mutex_lock(&adapter->lock);
spin_lock_irqsave(&adapter->driver_lock, flags);
if (!adapter->cur_cmd) {
lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
ret = -1;
spin_unlock_irqrestore(&adapter->driver_lock, flags);
goto done;
}
resp = (struct cmd_ds_command *)(adapter->cur_cmd->bufvirtualaddr);
respcmd = le16_to_cpu(resp->command);
result = le16_to_cpu(resp->result);
lbs_deb_host("CMD_RESP: response 0x%04x, size %d, jiffies %lu\n",
respcmd, priv->upld_len, jiffies);
lbs_deb_hex(LBS_DEB_HOST, "CMD_RESP", adapter->cur_cmd->bufvirtualaddr,
priv->upld_len);
if (!(respcmd & 0x8000)) {
lbs_deb_host("invalid response!\n");
adapter->cur_cmd_retcode = -1;
__libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
adapter->nr_cmd_pending--;
adapter->cur_cmd = NULL;
spin_unlock_irqrestore(&adapter->driver_lock, flags);
ret = -1;
goto done;
}
/* Store the response code to cur_cmd_retcode. */
adapter->cur_cmd_retcode = result;;
if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
struct cmd_ds_802_11_ps_mode *psmode = &resp->params.psmode;
u16 action = le16_to_cpu(psmode->action);
lbs_deb_host(
"CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
result, action);
if (result) {
lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
result);
/*
* We should not re-try enter-ps command in
* ad-hoc mode. It takes place in
* libertas_execute_next_command().
*/
if (adapter->mode == IW_MODE_ADHOC &&
action == CMD_SUBCMD_ENTER_PS)
adapter->psmode = WLAN802_11POWERMODECAM;
} else if (action == CMD_SUBCMD_ENTER_PS) {
adapter->needtowakeup = 0;
adapter->psstate = PS_STATE_AWAKE;
lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
if (adapter->connect_status != LIBERTAS_CONNECTED) {
/*
* When Deauth Event received before Enter_PS command
* response, We need to wake up the firmware.
*/
lbs_deb_host(
"disconnected, invoking libertas_ps_wakeup\n");
spin_unlock_irqrestore(&adapter->driver_lock, flags);
mutex_unlock(&adapter->lock);
libertas_ps_wakeup(priv, 0);
mutex_lock(&adapter->lock);
spin_lock_irqsave(&adapter->driver_lock, flags);
}
} else if (action == CMD_SUBCMD_EXIT_PS) {
adapter->needtowakeup = 0;
adapter->psstate = PS_STATE_FULL_POWER;
lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
} else {
lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
}
__libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
adapter->nr_cmd_pending--;
adapter->cur_cmd = NULL;
spin_unlock_irqrestore(&adapter->driver_lock, flags);
ret = 0;
goto done;
}
if (adapter->cur_cmd->cmdflags & CMD_F_HOSTCMD) {
/* Copy the response back to response buffer */
memcpy(adapter->cur_cmd->pdata_buf, resp,
le16_to_cpu(resp->size));
adapter->cur_cmd->cmdflags &= ~CMD_F_HOSTCMD;
}
/* If the command is not successful, cleanup and return failure */
if ((result != 0 || !(respcmd & 0x8000))) {
lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
result, respcmd);
/*
* Handling errors here
*/
switch (respcmd) {
case CMD_RET(CMD_GET_HW_SPEC):
case CMD_RET(CMD_802_11_RESET):
lbs_deb_host("CMD_RESP: reset failed\n");
break;
}
__libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
adapter->nr_cmd_pending--;
adapter->cur_cmd = NULL;
spin_unlock_irqrestore(&adapter->driver_lock, flags);
ret = -1;
goto done;
}
spin_unlock_irqrestore(&adapter->driver_lock, flags);
ret = handle_cmd_response(respcmd, resp, priv);
spin_lock_irqsave(&adapter->driver_lock, flags);
if (adapter->cur_cmd) {
/* Clean up and Put current command back to cmdfreeq */
__libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
adapter->nr_cmd_pending--;
WARN_ON(adapter->nr_cmd_pending > 128);
adapter->cur_cmd = NULL;
}
spin_unlock_irqrestore(&adapter->driver_lock, flags);
done:
mutex_unlock(&adapter->lock);
lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
return ret;
}
