On Tue, 19 Jul 2011 01:07:20 +0200 Rafał Miłecki <[email protected]> wrote:
> W dniu 19 lipca 2011 00:59 użytkownik Michael Büsch <[email protected]> napisał: > > On Tue, 19 Jul 2011 00:39:10 +0200 > > Rafał Miłecki <[email protected]> wrote: > > > >> W dniu 18 lipca 2011 22:41 użytkownik Michael Büsch <[email protected]> napisał: > >> > On Mon, 18 Jul 2011 22:14:50 +0200 > >> > Rafał Miłecki <[email protected]> wrote: > >> > > >> >> When using DMA on one of my BCM4321s and BCM43224 or BCM43225 I don't > >> >> get a single RX IRQ. > >> >> > >> >> Doing scanning requests sends TX packets to the hardware, and the > >> >> ucode generates IRQs for confirming transmitted packets. RX does not > >> >> seem to work however. I expected to see "native" beacons, or response > >> >> to the scanning request. > >> >> > >> >> Do you have idea what may be wrong, where should I look at? > >> > > >> > Is wl still using the same dma engine for > >> > RX as older versions did? (what was it? the first?) > >> > >> Yes. That's what wl does: > >> > >> 1) Disabling DMA engines (RX part) > >> write32 0xfaafc220 <- 0x00000000 > >> read32 0xfaafc230 -> 0x00000000 > >> > >> 2) Enabling DMA engines (RX part) > >> read32 0xfaafc220 -> 0x00000040 > >> write32 0xfaafc220 <- 0x0000084d CTL: [38 << 1 (OFFSET) | 0x1 (EN) | > >> 0x800 (PARITY)] > >> write32 0xfaafc228 <- 0x18948000 LO: [lo addr & ~routing_bits] > >> write32 0xfaafc22c <- 0x80000000 HI: [routing & ~ROUT_MASK | routing] > >> > >> (improved) b43 does: > >> > >> write32 0xfaafc220 <- 0x0000084d CTL > >> write32 0xfaafc228 <- 0x17b70000 LO > >> write32 0xfaafc22c <- 0x80000000 HI > >> write32 0xfaafc224 <- 0x00000400 STOP IDX > > > > What about the DMA interrupt masks? > > Well, in b43 we ask for all IRQs: > b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL); > write32 0xfaafc128 <- 0xffffffff > > wl also does: > write32 0xfaafc128 <- 0xffffffff > > (All the dumps I provide in this thread come from BCM43224) > No. The _DMA_ interrupt masks. Each DMA engine has its interrupt mask register. _______________________________________________ b43-dev mailing list [email protected] http://lists.infradead.org/mailman/listinfo/b43-dev
