[Prism54-users] Output power

[Martin Viteznik]

I found this patch from kaleda - please, can you tell me some info about it?

/*Made a patch to manage output power.
Currently only fixed value is supported
(I think the main in AP mode).
Still don't know a way to turn off the radio (anyone knows it) ?

Kaleda */

diff -uNr prism54.orig/ksrc/isl_ioctl.c prism54/ksrc/isl_ioctl.c
--- prism54.orig/ksrc/isl_ioctl.c 2003-12-17 08:16:38.000000000 +0200
+++ prism54/ksrc/isl_ioctl.c 2003-12-19 14:04:28.000000000 +0200
@@ -880,6 +880,9 @@
  range->max_retry = 65535;
  range->min_r_time = 1024;
  range->max_r_time = 65535 * 1024;
+
+ /* txpower is supported in dBm's */
+ range->txpower_capa = IW_TXPOW_DBM;

  /* Request the device for the supported frequencies
  * not really revelant since some devices will report the 5 GHz band
@@ -1638,6 +1641,47 @@
  return 0;
 }

+
+int prism54_get_txpower(struct net_device *ndev, struct iw_request_info
*info,
+ struct iw_param *vwrq, char *extra)
+{
+ islpci_private *priv = ndev->priv;
+ u32 u;
+ memset(vwrq, 0, sizeof(struct iw_param));
+ MGT_GET_REQUEST_U32(priv, OID_INL_OUTPUTPOWER, &u, fixedtxpower);
+ // intersil firmware operates in 0.25 dBm (1/4 dBm)
+ vwrq->value = u / 4;
+ vwrq->fixed = 1; // fixed value is set
+ // radio is not turned of
+ // btw: how is possible to turn off only the radio ?
+ vwrq->disabled = 0;
+ return 0;
+} // isl_ioctl_gettxpow
+
+int prism54_set_txpower(struct net_device *ndev, struct iw_request_info
*info,
+ struct iw_param *vwrq, char *extra)
+{
+ islpci_private *priv = ndev->priv;
+ // intersil firmware operates in 0.25 dBm (1/4)
+ u32 u = vwrq->value;
+ u *= 4;
+ if (vwrq->disabled) {
+ // don't know how to disable radio
+ printk(KERN_DEBUG "%s: %s() disabling radio is not yet supported.\n",
priv->ndev->name, __FUNCTION__);
+ return -ENOTSUPP;
+ } else if (vwrq->fixed) {
+ // currently only fixed value is supported
+ MGT_SET_REQUEST_U32(priv, OID_INL_OUTPUTPOWER , u, fixedtxpower);
+ return 0;
+ } else {
+ printk(KERN_DEBUG "%s: %s() auto power will be implemented later.\n",
+ priv->ndev->name, __FUNCTION__);
+ return -ENOTSUPP;
+ }
+} // isl_ioctl_settxpow
+
+
+
 int
 prism54_reset(struct net_device *ndev, struct iw_request_info *info,
        __u32 *uwrq, char *extra)
diff -uNr prism54.orig/ksrc/isl_ioctl.h prism54/ksrc/isl_ioctl.h
--- prism54.orig/ksrc/isl_ioctl.h 2003-12-17 08:16:38.000000000 +0200
+++ prism54/ksrc/isl_ioctl.h 2003-12-19 10:36:12.000000000 +0200
@@ -94,6 +94,10 @@
         struct iw_point *, char *);
 int prism54_get_encode(struct net_device *, struct iw_request_info *,
         struct iw_point *, char *);
+int prism54_set_txpower(struct net_device *, struct iw_request_info *,
+      struct iw_param *, char *);
+int prism54_get_txpower(struct net_device *, struct iw_request_info *,
+      struct iw_param *, char *);

 int prism54_reset(struct net_device *, struct iw_request_info *,
    __u32 *, char *);
@@ -189,8 +193,8 @@
  (iw_handler) prism54_get_rts, /* SIOCGIWRTS */
  (iw_handler) prism54_set_frag, /* SIOCSIWFRAG */
  (iw_handler) prism54_get_frag, /* SIOCGIWFRAG */
- (iw_handler) NULL, /* SIOCSIWTXPOW */
- (iw_handler) NULL, /* SIOCGIWTXPOW */
+ (iw_handler) prism54_set_txpower, /* SIOCSIWTXPOW */
+ (iw_handler) prism54_get_txpower, /* SIOCGIWTXPOW */
  (iw_handler) prism54_set_retry, /* SIOCSIWRETRY */
  (iw_handler) prism54_get_retry, /* SIOCGIWRETRY */
  (iw_handler) prism54_set_encode, /* SIOCSIWENCODE */
diff -uNr prism54.orig/ksrc/islpci_dev.h prism54/ksrc/islpci_dev.h
--- prism54.orig/ksrc/islpci_dev.h 2003-12-17 08:16:39.000000000 +0200
+++ prism54/ksrc/islpci_dev.h 2003-12-19 10:19:55.000000000 +0200
@@ -85,6 +85,7 @@
  volatile u32 shortretries;
  volatile u32 longretries;
  volatile u32 maxtxlifetime;
+ volatile u32 fixedtxpower;

  struct semaphore sem;
 };
diff -uNr prism54.orig/ksrc/islpci_mgt.h prism54/ksrc/islpci_mgt.h
--- prism54.orig/ksrc/islpci_mgt.h 2003-12-17 08:16:39.000000000 +0200
+++ prism54/ksrc/islpci_mgt.h 2003-12-19 13:59:17.000000000 +0200
@@ -79,6 +79,8 @@
 #define OID_INL_COMPONENT_ID                    0xFF020007
 #define OID_INL_CONFIG                          0xFF020008
 #define OID_INL_DOT11D_CONFORMANCE              0xFF02000C
+#define OID_INL_OUTPUTPOWER 0xFF02000F
+

 /* The dot11d conformance level configures the 802.11d conformance
levels.
  * The following conformance levels exist:*/

-- 
--
Linux is like a wigwam - no gates, no windows, apache inside...