From: Pavel Herrmann <morpheus.ibis@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 03/11] DM: add block controller core
Date: Fri, 21 Sep 2012 17:46:15 +0200 [thread overview]
Message-ID: <5464991.6tbrR79aoR@bloomfield> (raw)
In-Reply-To: <201209211739.21328.marex@denx.de>
On Friday 21 of September 2012 17:39:21 Marek Vasut wrote:
> Dear Pavel Herrmann,
>
> [...]
>
> > > Can't the old driver just have a compat section in them? Like I did with
> > > serial stuff:
> > >
> > > 1) rename the internal functions to ${driver}_${function_name} from pure
> > > ${function_name} and introduce section which behaves as a wrapper
> > > (implement ${function_name} calling ${driver}_${function_name} ).
> > > 2) Add your DM goo, implement #ifdef around it so either the compat
> > > section or DM section is enabled.
> >
> > I actually did something of this sort, see [4/11], with less touching.
> >
> > the problem is that while SATA drivers are easy to convert, IDE ones are
> > not. I would actually propose to do a ide_legacy driver (mostly out of the
> > code currently in common/cmd_ide.c), and keep it as the only option until
> > IDE dies completely.
>
> IDE will be around for a LONG time.
>
> You introduce that CONFIG_SYS_SATA_LEGACY for no reason, if you did it as
> said above, simple CONFIG_DM would suffice as the drivers would be intacts
> with DM disabled. Note the compiler will opt-out these proxy calls.
>
> Besides, with this approach of yours, you need to enable SATA_LEGACY for
> every single board now, introducing a lot of churn into the patches and if
> it's not defined, every board using SATA is broken, right?
No, if you dont define CONFIG_DM, you get the old way of interacting with
disks. only if you define CONFIG_DM you only need CONFIG_SATA_LEGACY to plug
old SATA drivers into DM codepaths
> > > How does that work? It's much cleaner.
> > >
> > > > Pavel Herrmann
> > >
> > > Best regards,
> > > Marek Vasut
>
> Best regards,
> Marek Vasut
next prev parent reply other threads:[~2012-09-21 15:46 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-20 19:37 [U-Boot] [PATCH 00/11] Add DM blockdev subsystem Pavel Herrmann
2012-09-20 19:37 ` [U-Boot] [PATCH 01/11] DM: add block device core Pavel Herrmann
2012-09-20 19:58 ` Marek Vasut
2012-09-21 7:11 ` Pavel Herrmann
2012-09-21 12:39 ` Marek Vasut
2012-09-21 13:27 ` Pavel Herrmann
2012-09-21 13:53 ` Marek Vasut
2012-09-21 14:57 ` Pavel Herrmann
2012-09-21 15:34 ` Marek Vasut
2012-09-21 15:48 ` Pavel Herrmann
2012-09-21 15:55 ` Marek Vasut
2012-09-21 17:19 ` Pavel Herrmann
2012-09-21 18:00 ` Marek Vasut
2012-09-21 18:53 ` Pavel Herrmann
2012-09-21 19:17 ` Marek Vasut
2012-09-21 19:29 ` Pavel Herrmann
2012-09-21 21:11 ` Marek Vasut
2012-09-21 23:43 ` Pavel Herrmann
2012-09-22 0:09 ` Marek Vasut
2012-09-22 9:39 ` Pavel Herrmann
2012-09-22 13:33 ` Marek Vasut
2012-09-22 13:59 ` Pavel Herrmann
2012-09-24 12:23 ` Pavel Herrmann
2012-09-20 20:49 ` [U-Boot] [U-Boot-DM] " Vikram Narayanan
2012-09-21 7:09 ` Pavel Herrmann
2012-09-21 12:39 ` Marek Vasut
2012-09-20 19:37 ` [U-Boot] [PATCH 02/11] DM: add support for scanning DOS partitions to blockdev core Pavel Herrmann
2012-09-20 20:03 ` Marek Vasut
2012-09-21 7:22 ` Pavel Herrmann
2012-09-21 12:47 ` Marek Vasut
2012-09-21 13:18 ` Pavel Herrmann
2012-09-21 13:54 ` Marek Vasut
2012-09-20 19:37 ` [U-Boot] [PATCH 03/11] DM: add block controller core Pavel Herrmann
2012-09-20 20:05 ` Marek Vasut
2012-09-21 7:21 ` Pavel Herrmann
2012-09-21 12:51 ` Marek Vasut
2012-09-21 13:14 ` Pavel Herrmann
2012-09-21 13:56 ` Marek Vasut
2012-09-21 15:04 ` Pavel Herrmann
2012-09-21 13:33 ` Pavel Herrmann
2012-09-21 13:58 ` Marek Vasut
2012-09-21 15:09 ` Pavel Herrmann
2012-09-21 15:39 ` Marek Vasut
2012-09-21 15:46 ` Pavel Herrmann [this message]
2012-09-21 16:08 ` Marek Vasut
2012-09-21 17:22 ` Pavel Herrmann
2012-09-21 18:01 ` Marek Vasut
2012-09-21 19:15 ` Pavel Herrmann
2012-09-21 19:22 ` Marek Vasut
2012-09-20 19:37 ` [U-Boot] [PATCH 04/11] DM: add sata_legacy driver for blockctrl Pavel Herrmann
2012-09-20 19:37 ` [U-Boot] [PATCH 05/11] DM: add ata and partition blockdev drivers Pavel Herrmann
2012-09-20 19:37 ` [U-Boot] [PATCH 06/11] DM: add cmd_block command Pavel Herrmann
2012-09-20 19:37 ` [U-Boot] [PATCH 07/11] DM: use new blockdev API in FAT Pavel Herrmann
2012-09-20 19:37 ` [U-Boot] [PATCH 08/11] DM: use new blockdev API in ext2 Pavel Herrmann
2012-09-20 19:37 ` [U-Boot] [PATCH 09/11] DM: use new blockdev API in reiserfs Pavel Herrmann
2012-09-20 19:37 ` [U-Boot] [PATCH 10/11] DM: use new blockdev API in ZFS Pavel Herrmann
2012-09-20 19:37 ` [U-Boot] [PATCH 11/11] DM: switch sandbox to DM blockdev Pavel Herrmann
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