linux-kernel - Re: [PATCH][WAS:bcmai,axi] bcma: add Broadcom specific AMBA bus driver

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Message-Id: <201105081706.12449.arnd@arndb.de>
Date:	Sun, 8 May 2011 17:06:12 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Rafał Miłecki <zajec5@...il.com>
Cc:	linux-wireless@...r.kernel.org,
	"John W. Linville" <linville@...driver.com>,
	b43-dev@...ts.infradead.org, Greg KH <greg@...ah.com>,
	Michael Büsch <mb@...sch.de>,
	Larry Finger <Larry.Finger@...inger.net>,
	George Kashperko <george@...u.edu.ua>,
	Arend van Spriel <arend@...adcom.com>,
	linux-arm-kernel@...ts.infradead.org,
	Russell King <rmk@....linux.org.uk>,
	Andy Botting <andy@...ybotting.com>,
	linuxdriverproject <devel@...uxdriverproject.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][WAS:bcmai,axi] bcma: add Broadcom specific AMBA bus driver

On Saturday 07 May 2011, Rafał Miłecki wrote:
> > Well, maybe. We call it only once, at init time. In any case we're
> > still waiting for Broadcom to clarify which cores are really used for
> > BCMA.
> 
> Arnd: did you have a look at defines at all?
> 
> Most of the defines have values in range 0x800 → 0x837. Converting
> this to array means loosing 0x800 u16 entries. We can not use 0x800
> offset, because there are also some defined between 0x000 and 0x800:
> #define BCMA_CORE_OOB_ROUTER           0x367   /* Out of band */
> #define BCMA_CORE_INVALID              0x700

I did not mean using the enum value as index, just make an array of
simple structs:

struct bcma_device_name {
	unsigned int id;
	const char *name;
};

struct bcma_device_name bcma_device_names = {
	{ BCMA_CORE_OOB_ROUTER, "Out of band router" },
	{ BCMA_CORE_INVALID,	"Invalid" },
	...
};

The data size for this should be way smaller than the code needed
to represent the whole function otherwise, and be more readable.

	Arnd

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