From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/2] ehci-hcd.c, musb_core, usb.h: Add USB_DMA_MINALIGN define for cache alignment
Date: Sun, 15 Jul 2012 10:07:05 +0200 [thread overview]
Message-ID: <201207151007.06108.marex@denx.de> (raw)
In-Reply-To: <CAA3CPjV6tXPCx7v40uLoixdHY3mN3revFsw6pip7VS7MCXHaWg@mail.gmail.com>
Dear Ilya Yanok,
> Hi,
>
> On Sun, Jul 8, 2012 at 7:08 AM, Marek Vasut <marex@denx.de> wrote:
> > @@ -207,8 +210,8 @@ static int
> >
> > ehci_submit_async(struct usb_device *dev, unsigned long pipe, void
> >
> > *buffer,
> >
> > int length, struct devrequest *req)
> >
> > {
> >
> > - static struct QH qh __attribute__((aligned(32)));
> > - static struct qTD qtd[3] __attribute__((aligned (32)));
> > + ALLOC_CACHE_ALIGN_BUFFER(struct QH, qh, 1);
>
> Somehow this doesn't work being allocated on stack... I assumed that this
> was declared as static just to use __attribute__((aligned))...
Not really ... but then, we have indeed a problem here. It was probably declared
static to preserve the contents of these variables across the the calls of this
function. Sigh, the USB code is really bloody :-/
Ilya, can you try pulling these out of the function?
> but it seems
> that current code doesn't like qh address being changed (I'm getting "Timed
> out on TD" messages). Any ideas? Changing it to DEFINE_... seems to help
> but it looks like hiding another bug.
>
> Regards, Ilya.
Best regards,
Marek Vasut
next prev parent reply other threads:[~2012-07-15 8:07 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-08 3:08 [U-Boot] [PATCH 1/2] common.h: Introduce DEFINE_CACHE_ALIGN_BUFFER Marek Vasut
2012-07-08 3:08 ` [U-Boot] [PATCH 2/2] ehci-hcd.c, musb_core, usb.h: Add USB_DMA_MINALIGN define for cache alignment Marek Vasut
2012-07-08 10:04 ` Ilya Yanok
2012-07-08 18:51 ` Marek Vasut
2012-07-08 20:52 ` Tom Rini
2012-07-08 21:36 ` Marek Vasut
2012-07-09 18:37 ` Ilya Yanok
2012-07-10 1:55 ` Marek Vasut
2012-07-14 22:11 ` Ilya Yanok
2012-07-14 22:08 ` Ilya Yanok
2012-07-15 8:07 ` Marek Vasut [this message]
2012-07-15 8:55 ` Ilya Yanok
2012-07-15 9:42 ` Marek Vasut
2012-07-08 12:23 ` [U-Boot] [PATCH 1/2] common.h: Introduce DEFINE_CACHE_ALIGN_BUFFER Ilya Yanok
2012-07-08 18:55 ` Marek Vasut
2012-07-20 4:01 ` Mike Frysinger
2012-07-20 11:31 ` Marek Vasut
2012-07-20 21:47 ` Mike Frysinger
2012-07-20 21:50 ` Tom Rini
2012-07-21 17:22 ` Mike Frysinger
2012-07-23 15:24 ` Tom Rini
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