linux-kernel - Re: [PATCH v2 09/13] can: pruss CAN driver.

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Message-ID: <8CB9F2C8F75C4041B9F0691D209DDAFD@subhasishg>
Date:	Mon, 14 Feb 2011 18:45:17 +0530
From:	"Subhasish Ghosh" <subhasish@...tralsolutions.com>
To:	"Marc Kleine-Budde" <mkl@...gutronix.de>
Cc:	"Wolfgang Grandegger" <wg@...ndegger.com>,
	"Kurt Van Dijck" <kurt.van.dijck@....be>,
	<davinci-linux-open-source@...ux.davincidsp.com>,
	<linux-arm-kernel@...ts.infradead.org>, <m-watkins@...com>,
	<nsekhar@...com>, <sachi@...tralsolutions.com>,
	"open list:CAN NETWORK DRIVERS" <socketcan-core@...ts.berlios.de>,
	"open list:CAN NETWORK DRIVERS" <netdev@...r.kernel.org>,
	"open list" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 09/13] can: pruss CAN driver.

Hello,

The problem with the "all" implementation is that it hogs the ARM/DSP 
heavily and that's the reason why we specifically avoided this in our 
firmware design.
Hence, implementing this condition spoils the whole purpose of the PRU!!

--------------------------------------------------
From: "Marc Kleine-Budde" <mkl@...gutronix.de>
Sent: Monday, February 14, 2011 3:05 PM
To: "Subhasish Ghosh" <subhasish@...tralsolutions.com>
Cc: "Wolfgang Grandegger" <wg@...ndegger.com>; "Kurt Van Dijck" 
<kurt.van.dijck@....be>; <davinci-linux-open-source@...ux.davincidsp.com>; 
<linux-arm-kernel@...ts.infradead.org>; <m-watkins@...com>; 
<nsekhar@...com>; <sachi@...tralsolutions.com>; "open list:CAN NETWORK 
DRIVERS" <socketcan-core@...ts.berlios.de>; "open list:CAN NETWORK DRIVERS" 
<netdev@...r.kernel.org>; "open list" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 09/13] can: pruss CAN driver.

Hello,

On 02/14/2011 09:45 AM, Subhasish Ghosh wrote:
> That is correct, we receive only pre-programmed CAN ids and "all" or
> "range" implementation is not there in the PRU firmware.

I'd really like to see that you add a "all" implementation to the
firmware. Or even better use the standard id/mask approach.

cheers, Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   | 

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