From mboxrd@z Thu Jan  1 00:00:00 1970
From: ISE Development <isedev@gmail.com>
Date: Thu, 14 Mar 2013 23:32:23 +0100
Subject: [RFT][PATCH] b43: DMA: debug rings alignment
In-Reply-To: <8990870.3kQAHQdGWn@wks001.ise.net>
References: <1363293681-23385-1-git-send-email-zajec5@gmail.com>
 <8990870.3kQAHQdGWn@wks001.ise.net>
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To: b43-dev@lists.infradead.org

On Thursday 14 Mar 2013 21:58:18 ISE Development wrote:
> On Thursday 14 Mar 2013 21:41:21 Rafa? Mi?ecki 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