leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

libertas: convert CMD_802_11_RF_TX_POWER to a direct command

Browse Source 
And while we're at it, grab min/max TX power from the firmware and use
that to validate incoming TX power requests from WEXT.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Dan Williams 2008-08-19 15:15:35 -04:00 committed by John W. Linville
parent 095f695cbb
commit 87c8c72d53
8 changed files with 115 additions and 118 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

91
drivers/net/wireless/libertas/cmd.c
View File

@ -614,47 +614,67 @@ static int lbs_cmd_802_11_snmp_mib(struct lbs_private *priv,
return 0;
}
static int lbs_cmd_802_11_rf_tx_power(struct cmd_ds_command *cmd,
u16 cmd_action, void *pdata_buf)
/**
* @brief Get the min, max, and current TX power
*
* @param priv A pointer to struct lbs_private structure
* @param curlevel Current power level in dBm
* @param minlevel Minimum supported power level in dBm (optional)
* @param maxlevel Maximum supported power level in dBm (optional)
*
* @return 0 on success, error on failure
*/
int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
s16 *maxlevel)
{
struct cmd_ds_802_11_rf_tx_power *prtp = &cmd->params.txp;
struct cmd_ds_802_11_rf_tx_power cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
cmd->size =
cpu_to_le16((sizeof(struct cmd_ds_802_11_rf_tx_power)) + S_DS_GEN);
cmd->command = cpu_to_le16(CMD_802_11_RF_TX_POWER);
prtp->action = cpu_to_le16(cmd_action);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_GET);
lbs_deb_cmd("RF_TX_POWER_CMD: size:%d cmd:0x%x Act:%d\n",
le16_to_cpu(cmd->size), le16_to_cpu(cmd->command),
le16_to_cpu(prtp->action));
switch (cmd_action) {
case CMD_ACT_TX_POWER_OPT_GET:
prtp->action = cpu_to_le16(CMD_ACT_GET);
prtp->currentlevel = 0;
break;
case CMD_ACT_TX_POWER_OPT_SET_HIGH:
prtp->action = cpu_to_le16(CMD_ACT_SET);
prtp->currentlevel = cpu_to_le16(CMD_ACT_TX_POWER_INDEX_HIGH);
break;
case CMD_ACT_TX_POWER_OPT_SET_MID:
prtp->action = cpu_to_le16(CMD_ACT_SET);
prtp->currentlevel = cpu_to_le16(CMD_ACT_TX_POWER_INDEX_MID);
break;
case CMD_ACT_TX_POWER_OPT_SET_LOW:
prtp->action = cpu_to_le16(CMD_ACT_SET);
prtp->currentlevel = cpu_to_le16(*((u16 *) pdata_buf));
break;
ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
if (ret == 0) {
*curlevel = le16_to_cpu(cmd.curlevel);
if (minlevel)
*minlevel = le16_to_cpu(cmd.minlevel);
if (maxlevel)
*maxlevel = le16_to_cpu(cmd.maxlevel);
}
lbs_deb_leave(LBS_DEB_CMD);
return 0;
return ret;
}
/**
* @brief Set the TX power
*
* @param priv A pointer to struct lbs_private structure
* @param dbm The desired power level in dBm
*
* @return 0 on success, error on failure
*/
int lbs_set_tx_power(struct lbs_private *priv, s16 dbm)
{
struct cmd_ds_802_11_rf_tx_power cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
cmd.curlevel = cpu_to_le16(dbm);
lbs_deb_cmd("SET_RF_TX_POWER: %d dBm\n", dbm);
ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
static int lbs_cmd_802_11_monitor_mode(struct cmd_ds_command *cmd,
@ -1420,11 +1440,6 @@ int lbs_prepare_and_send_command(struct lbs_private *priv,
ret = lbs_cmd_reg_access(cmdptr, cmd_action, pdata_buf);
break;
case CMD_802_11_RF_TX_POWER:
ret = lbs_cmd_802_11_rf_tx_power(cmdptr,
cmd_action, pdata_buf);
break;
case CMD_802_11_MONITOR_MODE:
ret = lbs_cmd_802_11_monitor_mode(cmdptr,
cmd_action, pdata_buf);

4
drivers/net/wireless/libertas/cmd.h
View File

@ -61,4 +61,8 @@ int lbs_cmd_802_11_enable_rsn(struct lbs_private *priv, uint16_t cmd_action,
int lbs_cmd_802_11_key_material(struct lbs_private *priv, uint16_t cmd_action,
struct assoc_request *assoc);
int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
s16 *maxlevel);
int lbs_set_tx_power(struct lbs_private *priv, s16 dbm);
#endif /* _LBS_CMD_H */

19
drivers/net/wireless/libertas/cmdresp.c
View File

@ -188,21 +188,6 @@ static int lbs_ret_802_11_snmp_mib(struct lbs_private *priv,
return 0;
}
static int lbs_ret_802_11_rf_tx_power(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_rf_tx_power *rtp = &resp->params.txp;
lbs_deb_enter(LBS_DEB_CMD);
priv->txpowerlevel = le16_to_cpu(rtp->currentlevel);
lbs_deb_cmd("TX power currently %d\n", priv->txpowerlevel);
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_rssi(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
@ -287,10 +272,6 @@ static inline int handle_cmd_response(struct lbs_private *priv,
ret = lbs_ret_802_11_snmp_mib(priv, resp);
break;
case CMD_RET(CMD_802_11_RF_TX_POWER):
ret = lbs_ret_802_11_rf_tx_power(priv, resp);
break;
case CMD_RET(CMD_802_11_SET_AFC):
case CMD_RET(CMD_802_11_GET_AFC):
spin_lock_irqsave(&priv->driver_lock, flags);

4
drivers/net/wireless/libertas/dev.h
View File

@ -253,7 +253,9 @@ struct lbs_private {
u32 connect_status;
u32 mesh_connect_status;
u16 regioncode;
u16 txpowerlevel;
s16 txpower_cur;
s16 txpower_min;
s16 txpower_max;
/** POWER MANAGEMENT AND PnP SUPPORT */
u8 surpriseremoved;

10
drivers/net/wireless/libertas/host.h
View File

@ -178,16 +178,6 @@
#define CMD_OPT_802_11_RF_CHANNEL_GET 0x00
#define CMD_OPT_802_11_RF_CHANNEL_SET 0x01
/* Define action or option for CMD_802_11_RF_TX_POWER */
#define CMD_ACT_TX_POWER_OPT_GET 0x0000
#define CMD_ACT_TX_POWER_OPT_SET_HIGH 0x8007
#define CMD_ACT_TX_POWER_OPT_SET_MID 0x8004
#define CMD_ACT_TX_POWER_OPT_SET_LOW 0x8000
#define CMD_ACT_TX_POWER_INDEX_HIGH 0x0007
#define CMD_ACT_TX_POWER_INDEX_MID 0x0004
#define CMD_ACT_TX_POWER_INDEX_LOW 0x0000
/* Define action or option for CMD_802_11_DATA_RATE */
#define CMD_ACT_SET_TX_AUTO 0x0000
#define CMD_ACT_SET_TX_FIX_RATE 0x0001

7
drivers/net/wireless/libertas/hostcmd.h
View File

@ -435,8 +435,12 @@ struct cmd_ds_802_11_mac_address {
};
struct cmd_ds_802_11_rf_tx_power {
struct cmd_header hdr;
__le16 action;
__le16 currentlevel;
__le16 curlevel;
s8 maxlevel;
s8 minlevel;
};
struct cmd_ds_802_11_rf_antenna {
@ -701,7 +705,6 @@ struct cmd_ds_command {
struct cmd_ds_802_11_get_stat gstat;
struct cmd_ds_802_3_get_stat gstat_8023;
struct cmd_ds_802_11_snmp_mib smib;
struct cmd_ds_802_11_rf_tx_power txp;
struct cmd_ds_802_11_rf_antenna rant;
struct cmd_ds_802_11_monitor_mode monitor;
struct cmd_ds_802_11_ad_hoc_join adj;

13
drivers/net/wireless/libertas/main.c
View File

@ -956,17 +956,24 @@ EXPORT_SYMBOL_GPL(lbs_resume);
static int lbs_setup_firmware(struct lbs_private *priv)
{
int ret = -1;
s16 curlevel = 0, minlevel = 0, maxlevel = 0;
lbs_deb_enter(LBS_DEB_FW);
/*
* Read MAC address from HW
*/
/* Read MAC address from firmware */
memset(priv->current_addr, 0xff, ETH_ALEN);
ret = lbs_update_hw_spec(priv);
if (ret)
goto done;
/* Read power levels if available */
ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
if (ret == 0) {
priv->txpower_cur = curlevel;
priv->txpower_min = minlevel;
priv->txpower_max = maxlevel;
}
lbs_set_mac_control(priv);
done:
lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);

85
drivers/net/wireless/libertas/wext.c
View File

@ -422,26 +422,24 @@ static int lbs_get_txpow(struct net_device *dev,
{
int ret = 0;
struct lbs_private *priv = dev->priv;
s16 curlevel = 0;
lbs_deb_enter(LBS_DEB_WEXT);
ret = lbs_prepare_and_send_command(priv,
CMD_802_11_RF_TX_POWER,
CMD_ACT_TX_POWER_OPT_GET,
CMD_OPTION_WAITFORRSP, 0, NULL);
ret = lbs_get_tx_power(priv, &curlevel, NULL, NULL);
if (ret)
goto out;
lbs_deb_wext("tx power level %d dbm\n", priv->txpowerlevel);
vwrq->value = priv->txpowerlevel;
lbs_deb_wext("tx power level %d dbm\n", curlevel);
priv->txpower_cur = curlevel;
vwrq->value = curlevel;
vwrq->fixed = 1;
if (priv->radioon) {
vwrq->disabled = 0;
vwrq->flags = IW_TXPOW_DBM;
} else {
} else
vwrq->disabled = 1;
}
out:
lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret);
@ -693,22 +691,12 @@ static int lbs_get_range(struct net_device *dev, struct iw_request_info *info,
range->sensitivity = 0;
/*
* Setup the supported power level ranges
*/
/* Setup the supported power level ranges */
memset(range->txpower, 0, sizeof(range->txpower));
range->txpower[0] = 5;
range->txpower[1] = 7;
range->txpower[2] = 9;
range->txpower[3] = 11;
range->txpower[4] = 13;
range->txpower[5] = 15;
range->txpower[6] = 17;
range->txpower[7] = 19;
range->num_txpower = 8;
range->txpower_capa = IW_TXPOW_DBM;
range->txpower_capa |= IW_TXPOW_RANGE;
range->txpower_capa = IW_TXPOW_DBM | IW_TXPOW_RANGE;
range->txpower[0] = priv->txpower_min;
range->txpower[1] = priv->txpower_max;
range->num_txpower = 2;
range->event_capa[0] = (IW_EVENT_CAPA_K_0 |
IW_EVENT_CAPA_MASK(SIOCGIWAP) |
@ -1844,39 +1832,46 @@ static int lbs_set_txpow(struct net_device *dev, struct iw_request_info *info,
{
int ret = 0;
struct lbs_private *priv = dev->priv;
u16 dbm;
s16 dbm = (s16) vwrq->value;
lbs_deb_enter(LBS_DEB_WEXT);
if (vwrq->disabled) {
lbs_radio_ioctl(priv, RADIO_OFF);
return 0;
goto out;
}
priv->preamble = CMD_TYPE_AUTO_PREAMBLE;
if (vwrq->fixed == 0) {
/* Auto power control */
priv->preamble = CMD_TYPE_AUTO_PREAMBLE;
dbm = priv->txpower_max;
} else {
/* Userspace check in iwrange if it should use dBm or mW,
* therefore this should never happen... Jean II */
if ((vwrq->flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) {
ret = -EOPNOTSUPP;
goto out;
}
/* Validate requested power level against firmware allowed levels */
if (priv->txpower_min && (dbm < priv->txpower_min)) {
ret = -EINVAL;
goto out;
}
if (priv->txpower_max && (dbm > priv->txpower_max)) {
ret = -EINVAL;
goto out;
}
}
lbs_radio_ioctl(priv, RADIO_ON);
/* Userspace check in iwrange if it should use dBm or mW,
* therefore this should never happen... Jean II */
if ((vwrq->flags & IW_TXPOW_TYPE) == IW_TXPOW_MWATT) {
return -EOPNOTSUPP;
} else
dbm = (u16) vwrq->value;
lbs_deb_wext("txpower set %d dBm\n", dbm);
/* auto tx power control */
if (vwrq->fixed == 0)
dbm = 0xffff;
lbs_deb_wext("txpower set %d dbm\n", dbm);
ret = lbs_prepare_and_send_command(priv,
CMD_802_11_RF_TX_POWER,
CMD_ACT_TX_POWER_OPT_SET_LOW,
CMD_OPTION_WAITFORRSP, 0, (void *)&dbm);
ret = lbs_set_tx_power(priv, dbm);
out:
lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret);
return ret;
}