This reduces IRQ pressure by about one third on a saturated link by disabling the PMQ mechanism. We currently don't use that mechanism.
Signed-off-by: Michael Buesch <[email protected]> --- If we implement PMQ in the future, we need to re-enable it, but only for AP mode. See the comment in the sourcecode. Index: wireless-testing/drivers/net/wireless/b43/main.c =================================================================== --- wireless-testing.orig/drivers/net/wireless/b43/main.c 2009-09-12 00:31:44.000000000 +0200 +++ wireless-testing/drivers/net/wireless/b43/main.c 2009-09-12 00:41:27.000000000 +0200 @@ -2675,6 +2675,20 @@ static void b43_adjust_opmode(struct b43 cfp_pretbtt = 50; } b43_write16(dev, 0x612, cfp_pretbtt); + + /* FIXME: We don't currently implement the PMQ mechanism, + * so always disable it. If we want to implement PMQ, + * we need to enable it here (clear DISCPMQ) in AP mode. + */ + if (0 /* ctl & B43_MACCTL_AP */) { + b43_write32(dev, B43_MMIO_MACCTL, + b43_read32(dev, B43_MMIO_MACCTL) + & ~B43_MACCTL_DISCPMQ); + } else { + b43_write32(dev, B43_MMIO_MACCTL, + b43_read32(dev, B43_MMIO_MACCTL) + | B43_MACCTL_DISCPMQ); + } } static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm) -- Greetings, Michael. _______________________________________________ Bcm43xx-dev mailing list [email protected] https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
