linux-kernel - Re: [PATCH] net: macb: Add 64 bit addressing support for GEM

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Date:	Wed, 10 Aug 2016 17:39:23 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	harini.katakam@...inx.com
Cc:	nicolas.ferre@...el.com, harinikatakamlinux@...il.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	harinik@...inx.com, punnaia@...inx.com, michals@...inx.com,
	anirudh@...inx.com
Subject: Re: [PATCH] net: macb: Add 64 bit addressing support for GEM

From: Harini Katakam <harini.katakam@...inx.com>
Date: Tue, 9 Aug 2016 13:15:53 +0530

> This patch adds support for 64 bit addressing and BDs.
> -> Enable 64 bit addressing in DMACFG register.
> -> Set DMA mask when design config register shows support for 64 bit addr.
> -> Add new BD words for higher address when 64 bit DMA support is present.
> -> Add and update TBQPH and RBQPH for MSB of BD pointers.
> -> Change extraction and updation of buffer addresses to use
> 64 bit address.
> -> In gem_rx extract address in one place insted of two and use a
> separate flag for RXUSED.
> 
> Signed-off-by: Harini Katakam <harinik@...inx.com>

It's not the cleanest looking thing in the world with all of these
ifdefs, but I can't suggest anything better, so applied to net-next
thanks.