From: AKASHI Takahiro <takahiro.akashi@linaro.org>
To: Simon Glass <sjg@chromium.org>
Cc: U-Boot Mailing List <u-boot@lists.denx.de>,
Tom Rini <trini@konsulko.com>,
Heinrich Schuchardt <xypron.glpk@gmx.de>,
Marek Vasut <marex@denx.de>,
Masahisa Kojima <masahisa.kojima@linaro.org>,
Pavel Herrmann <morpheus.ibis@gmail.com>
Subject: Re: [PATCH 14/45] dm: blk: Add udevice functions
Date: Thu, 29 Sep 2022 09:51:45 +0900 [thread overview]
Message-ID: <20220929005145.GA39264@laputa> (raw)
In-Reply-To: <CAPnjgZ0d1+LxRLB=8f+c_4-QH5auvc9xriy+mE8V=711m39g=A@mail.gmail.com>
Hi Simon,
On Wed, Sep 28, 2022 at 04:20:56AM -0600, Simon Glass wrote:
> Hi Takahiro,
>
> On Sun, 25 Sept 2022 at 18:17, AKASHI Takahiro
> <takahiro.akashi@linaro.org> wrote:
> >
> > Hi Simon,
> >
> > On Sun, Sep 25, 2022 at 09:02:17AM -0600, Simon Glass wrote:
> > > At present we have functions called blk_dread(), etc., which take a
> > > struct blk_desc * to refer to the block device. Add some functions which
> > > use udevice instead, since this is more in keeping with how driver model
> > > is supposed to work.
> >
> > Unfortunately, NAK.
> > I have already added similar functions in disk/disk-uclass.c
> > with my commit 59da9d4782cd ("dm: disk: add read/write interfaces with
> > udevice"). dev_read()/dev_write() works well with UCLASS_BLK (as intended).
> >
> > I remember that you also ack'ed that patch.
>
> You have a better memory than me!
>
> How about we make those functions call my new ones?
So do you want to have two distinct API's for BLK and PARTITION?
You seem to have a policy that each DM class should have its own
API's.
I don't have a strong opinion here, but form user's point of view,
block-level accessing has no difference between BLK and PARTITION.
Most common users of such accessors are file systems.
In stead of using the following code at every corner,
cid = device_get_uclass_id(udev);
if (cid == UCLASS_BLK)
blk_read(udev, ...);
else if (cid == UCLASS_PARTITION)
disk_part(udev, ...);
it may be more convenient to have a single API.
> Also I think we should rename your functions to avoid using the
> dev_read prefix, since this is for reading from the device tree.
Okay.
> Perhaps disk_read()? Also it seems that we could rationalise the code
> between disk_read() and part_read() ?
I'm not sure what you mean by "rationalise".
> Also should have comments in the
> header file about what the functions do (and what type of device they
> accept).
Yeah.
-Takahiro Akashi
> Regards,
> Simon
> [..]
next prev parent reply other threads:[~2022-09-29 0:51 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-25 15:02 [PATCH 00/45] vbe: Implement the full firmware flow Simon Glass
2022-09-25 15:02 ` [PATCH 01/45] Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE Simon Glass
2022-09-25 15:02 ` [PATCH 02/45] disk: Drop debug messages in part_efi Simon Glass
2022-09-26 6:11 ` Heinrich Schuchardt
2022-09-25 15:02 ` [PATCH 03/45] bloblist: Drop debugging Simon Glass
2022-09-25 15:02 ` [PATCH 04/45] rsa: Avoid warning in padding_pss_verify() Simon Glass
2022-09-26 6:23 ` Heinrich Schuchardt
2022-09-25 15:02 ` [PATCH 05/45] spl: Use binman suffix allow symbols of any SPL etype Simon Glass
2022-09-25 15:02 ` [PATCH 06/45] spl: Split up the board_init_r() function Simon Glass
2022-09-25 15:02 ` [PATCH 07/45] spl: Refactor controls for console output Simon Glass
2022-09-29 15:16 ` Tom Rini
2022-09-25 15:02 ` [PATCH 08/45] spl: Add a separate silence option for SPL Simon Glass
2022-09-25 15:02 ` [PATCH 09/45] CI: Install pyelftools for builds Simon Glass
2022-09-26 6:29 ` Heinrich Schuchardt
2022-09-28 10:20 ` Simon Glass
2022-09-29 15:05 ` Tom Rini
2022-09-29 23:55 ` Simon Glass
2022-09-30 12:56 ` Tom Rini
2022-09-30 13:28 ` Simon Glass
2022-09-25 15:02 ` [PATCH 10/45] binman: Allow obtaining a symbol value Simon Glass
2022-09-25 15:02 ` [PATCH 11/45] binman: Split out looking up a symbol into a function Simon Glass
2022-09-25 15:02 ` [PATCH 12/45] binman: Handle writing ELF symbols in the Entry class Simon Glass
2022-09-25 15:02 ` [PATCH 13/45] binman: Support writing symbols into ELF files Simon Glass
2022-09-25 15:02 ` [PATCH 14/45] dm: blk: Add udevice functions Simon Glass
2022-09-26 0:17 ` AKASHI Takahiro
2022-09-28 10:20 ` Simon Glass
2022-09-29 0:51 ` AKASHI Takahiro [this message]
2022-09-29 2:35 ` Simon Glass
2022-09-30 1:54 ` AKASHI Takahiro
2022-09-25 15:02 ` [PATCH 15/45] dm: usb: Update the test to cover reading and writing Simon Glass
2022-09-25 15:02 ` [PATCH 16/45] dm: blk: mmc: Tidy up some Makefile rules for SPL Simon Glass
2022-09-25 15:02 ` [PATCH 17/45] dm: mmc: Allow sandbox emulator to build without writes Simon Glass
2022-09-25 15:02 ` [PATCH 18/45] sandbox: Drop message about writing sandbox state Simon Glass
2022-09-26 6:31 ` Heinrich Schuchardt
2022-09-25 15:02 ` [PATCH 19/45] sandbox: Generalise SPL booting Simon Glass
2022-09-25 15:02 ` [PATCH 20/45] sandbox: Add a way to specify the sandbox executable Simon Glass
2022-09-26 6:49 ` Heinrich Schuchardt
2022-11-07 23:35 ` Simon Glass
2022-09-25 15:02 ` [PATCH 21/45] bootstd: Add a way to set up a bootflow Simon Glass
2022-09-25 15:02 ` [PATCH 22/45] image: Move comment for fit_conf_find_compat() Simon Glass
2022-09-26 6:54 ` Heinrich Schuchardt
2022-09-25 15:02 ` [PATCH 23/45] test: Report skippped tests Simon Glass
2022-09-25 15:02 ` [PATCH 24/45] test: Update tests to use the skip feature Simon Glass
2022-09-25 15:02 ` [PATCH 25/45] test: Support tests which can only be run manually Simon Glass
2022-09-26 6:56 ` Heinrich Schuchardt
2022-09-28 10:20 ` Simon Glass
2022-09-25 15:02 ` [PATCH 26/45] image: Add the concept of a phase to FIT Simon Glass
2022-09-25 15:02 ` [PATCH 27/45] image: Allow loading a FIT config for a particular phase Simon Glass
2022-09-25 15:02 ` [PATCH 28/45] image: Correct strncpy() warning with image_set_name() Simon Glass
2022-09-25 15:02 ` [PATCH 29/45] vbe: Rename vbe_fixup to vbe_request Simon Glass
2022-09-25 15:02 ` [PATCH 30/45] vbe: Use a warning for a failed requests Simon Glass
2022-09-25 15:02 ` [PATCH 31/45] spl: Allow multiple loaders of the same type Simon Glass
2022-09-30 16:28 ` Tom Rini
2022-09-30 16:37 ` Simon Glass
2022-09-30 16:39 ` Tom Rini
2022-09-30 16:45 ` Simon Glass
2022-09-30 16:50 ` Tom Rini
2022-09-30 16:55 ` Simon Glass
2022-09-25 15:02 ` [PATCH 32/45] sandbox: Support obtaining the next phase from an image Simon Glass
2022-09-25 15:02 ` [PATCH 33/45] vbe: Support selecting operations by SPL phase Simon Glass
2022-09-25 15:02 ` [PATCH 34/45] vbe: Support reading the next SPL phase via VBE Simon Glass
2022-09-25 15:02 ` [PATCH 35/45] vbe: Move OS implementation into a separate file Simon Glass
2022-09-25 15:02 ` [PATCH 36/45] vbe: Drop the U-Boot prefix from the version Simon Glass
2022-09-25 15:02 ` [PATCH 37/45] vbe: Add Kconfig options for VPL Simon Glass
2022-09-25 15:02 ` [PATCH 38/45] vbe: Add info about the VBE device to the fwupd node Simon Glass
2022-09-25 15:02 ` [PATCH 39/45] sandbox: Add a binman image for VPL Simon Glass
2022-09-25 15:02 ` [PATCH 40/45] vbe: Correct pylint warnings in test_vbe Simon Glass
2022-09-25 15:02 ` [PATCH 41/45] vbe: Use a manual test Simon Glass
2022-09-25 15:02 ` [PATCH 42/45] vbe: Record which phases loaded using VBE Simon Glass
2022-09-25 15:02 ` [PATCH 43/45] vbe: Add docs and a test for the VBE command Simon Glass
2022-09-25 15:02 ` [PATCH 44/45] vbe: Add a subcommand to show the VBE state Simon Glass
2022-09-25 15:02 ` [PATCH 45/45] vbe: Add a test for the VBE flow into U-Boot proper Simon Glass
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