On Monday 06 August 2007 23:29:04 Larry Finger wrote:
> Michael,
>
> I sent the wrong message under this subject before.
>
> This hack disabled hardware power control. With this installed and the
> desired power set to 10 dBm using the previous patch, I get much, much
> better performance from bcm43xx-mac80211 on my BCM4311. I have not yet
> tested it on the BCM4306 or the BCM4318.
>
> The new iperf readings for transmit/receive with the computer about 2 m
> from the AP are as follows:
>
> Bit Rate xmit/receive (Mbs)
>
> 1M 1.11/8.70
> 2M 1.44/11.0
> 5.5M 4.15/13.3
> 6M 4.76/17.4
> 9M 6.55/18.2
> 11M 6.54/14.3
> 18M 10.7/18.5
> 24M 12.8/19.5
> 36M 16.1/19.7
> 48M 18.0/19.5
> 54M 18.6/19.0
>
> These numbers are comparable with what I'm getting with the PHY port from
> softmac. I don't understand the dip in received rate at 11M, but it is real.
> On Richard Jonsson's 4311, he isn't able to measure the transfer rate at
> 11M.
>
> With these settings, the rate adjustment proces bumps the rate to 54M
> automatically.
>
> Larry
>
>
>
> Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_phy.c
> ===================================================================
> --- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_phy.c
> +++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_phy.c
> @@ -471,6 +471,7 @@ void bcm43xx_phy_early_init(struct bcm43
> struct bcm43xx_phy *phy = &dev->phy;
> struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
>
> + phy->hw_pctl_off = 1;
> default_baseband_attenuation(dev, &phy->bbatt);
> default_radio_attenuation(dev, &phy->rfatt);
> phy->tx_control = (default_tx_control(dev) << 4);
> Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_phy.h
> ===================================================================
> --- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_phy.h
> +++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_phy.h
> @@ -219,8 +219,9 @@ void bcm43xx_gphy_dc_lt_init(struct bcm4
>
> /* Returns the boolean whether the board has HardwarePowerControl */
> #define has_hardware_pctl(phy) \
> + (!((phy)->hw_pctl_off) && \
> (((phy)->type == BCM43xx_PHYTYPE_A && (phy)->rev >= 5) || \
> - ((phy)->type == BCM43xx_PHYTYPE_G && (phy)->rev >= 6))
> + ((phy)->type == BCM43xx_PHYTYPE_G && (phy)->rev >= 6)))
> /* Returns the boolean whether "TX Magnification" is enabled. */
> #define has_tx_magnification(phy) \
> (((phy)->rev >= 2) && \
> Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx.h
> ===================================================================
> --- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx.h
> +++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx.h
> @@ -534,6 +534,7 @@ struct bcm43xx_phy {
> struct bcm43xx_bbatt bbatt;
> struct bcm43xx_rfatt rfatt;
> u8 tx_control; /* BCM43xx_TXCTL_XXX */
> + bool hw_pctl_off;
> #ifdef CONFIG_BCM43XX_MAC80211_DEBUG
> bool manual_txpower_control; /* Manual TX-power control enabled? */
> #endif
>
> ---
> _______________________________________________
> Bcm43xx-dev mailing list
> Bcm43xx-dev@xxxxxxxxxxxxxxxx
> https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
>
>
I am currently doing a patch for this.
--
Greetings Michael.
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