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Message-ID: <4E0C75BD.1050103@ladisch.de>
Date:   Thu, 30 Jun 2011 15:10:21 +0200
From:   Clemens Ladisch <clemens@ladisch.de>
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To:     Ralf Baechle <ralf@linux-mips.org>
CC:     Takashi Iwai <tiwai@suse.de>, linux-arch@vger.kernel.org,
        linux-mips@linux-mips.org, alsa-devel@alsa-project.org,
        florian@linux-mips.org, "David S. Miller" <davem@davemloft.net>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        linux-kernel@vger.kernel.org,
        Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
        sparclinux@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
        Matt Turner <mattst88@gmail.com>,
        Florian Fainelli <florian@openwrt.org>,
        Richard Henderson <rth@twiddle.net>
Subject: Re: [alsa-devel] SB16 build error.
References: <20110630091754.GA12119@linux-mips.org>     <s5h8vsjy68z.wl%tiwai@suse.de> <20110630105254.GA25732@linux-mips.org>
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Ralf Baechle wrote:
> I have no idea how big the soundblaster microcode being loaded actually is,
> that is if the reduced size of 0x1f00 will be sufficient.

The biggest file is WFM0001A.CSP with 0x2df0 bytes.

> I don't see how the old ioctl can possibly have been
> used before so there isn't a compatibility problem.

The code uses SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE but doesn't care what
the size field of the ioctl code is, so we could use any random value on
those architectures.

> Or you could entirely sidestep the problem and use request_firmware()
> but I guess that's more effort than you want to invest.

The driver already implements this for a bunch of predefined CSP code
blobs.  I'm not sure whether anybody has ever loaded additional .csp
files.


Regards,
Clemens