[RFT][PATCH] b43: DMA: debug rings alignment
ISE Development
isedev at gmail.com
Thu Mar 14 18:32:23 EDT 2013
On Thursday 14 Mar 2013 21:58:18 ISE Development wrote:
> On Thursday 14 Mar 2013 21:41:21 Rafał Miłecki wrote:
> > index 38bc5a7..30da6ce 100644
> > --- a/drivers/net/wireless/b43/dma.c
> > +++ b/drivers/net/wireless/b43/dma.c
> > @@ -915,6 +915,21 @@ struct b43_dmaring *b43_setup_dmaring(struct
> > b43_wldev
> > *dev, ring->last_injected_overflow = jiffies;
> >
> > #endif
> >
> > + if (type == B43_DMA_64BIT) {
> > + u32 tmp;
> > + if (for_tx) {
> > + b43_write32(dev, ring->mmio_base +
> > B43_DMA64_TXRINGLO, 0xff0); + tmp = b43_read32(dev,
> > ring->mmio_base + B43_DMA64_TXRINGLO);
> > + pr_info("[DBG] Testing TX on ring 0x%X: 0x%X\n",
> > ring->mmio_base, tmp); + } else {
> > + b43_write32(dev, ring->mmio_base +
> > B43_DMA64_RXRINGLO, 0xff0); + tmp = b43_read32(dev,
> > ring->mmio_base + B43_DMA64_RXRINGLO);
> > + pr_info("[DBG] Testing RX on ring 0x%X: 0x%X\n",
> > ring->mmio_base, tmp); + }
> > + } else {
> > + pr_err("[DBG] Whoops, it's not 64b DMA engine!\n");
> > + }
> > +
> >
> > if (for_tx) {
> >
> > /* Assumption: B43_TXRING_SLOTS can be divided by
> >
> > TX_SLOTS_PER_FRAME */ BUILD_BUG_ON(B43_TXRING_SLOTS % TX_SLOTS_PER_FRAME
> > !=
> > 0);
>
> Will start testing now...
Here's the output:
[38667.424687] b43-phy0 debug: [DBG] Testing TX on ring 0x200: 0x0
[38667.424733] b43-phy0 debug: [DBG] Testing TX on ring 0x240: 0x0
[38667.424787] b43-phy0 debug: [DBG] Testing TX on ring 0x280: 0x0
[38667.424840] b43-phy0 debug: [DBG] Testing TX on ring 0x2C0: 0x0
[38667.424894] b43-phy0 debug: [DBG] Testing TX on ring 0x300: 0x0
[38667.424948] b43-phy0 debug: [DBG] Testing RX on ring 0x200: 0x0
--
-- isedev
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