From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] cmd_ide: Convert to [read,write][b,w]
Date: Wed, 23 Jun 2010 22:51:28 +0200 [thread overview]
Message-ID: <20100623205128.52C001524F4@gemini.denx.de> (raw)
In-Reply-To: <1277320683-2057-1-git-send-email-marek.vasut@gmail.com>
Dear Marek Vasut,
In message <1277320683-2057-1-git-send-email-marek.vasut@gmail.com> you wrote:
> Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
> ---
> common/cmd_ide.c | 22 +++++++++++++---------
> 1 files changed, 13 insertions(+), 9 deletions(-)
I don't see the big advantage of this patch yet.
> #ifndef CONFIG_SYS_ATA_PORT_ADDR
> @@ -526,7 +526,7 @@ __ide_outb(int dev, int port, unsigned char val)
> {
> debug ("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
> dev, port, val, (ATA_CURR_BASE(dev)+CONFIG_SYS_ATA_PORT_ADDR(port)));
> - outb(val, (ATA_CURR_BASE(dev)+CONFIG_SYS_ATA_PORT_ADDR(port)));
> + writeb(val, (ATA_CURR_BASE(dev)+CONFIG_SYS_ATA_PORT_ADDR(port)));
So we replace outb() => writeb(), but the function where this is used
is still __ide_outb() ?
The __ide_outb() => outb() mapping looks more logical to me.
> -output_data(int dev, ulong *sect_buf, int words)
> +output_data(int dev, uint16_t *sect_buf, int words)
> {
> - outsw(ATA_CURR_BASE(dev)+ATA_DATA_REG, sect_buf, words<<1);
> + int i;
> + for (i = 0; i < (words << 1); i++)
> + writew(sect_buf[i], ATA_CURR_BASE(dev)+ATA_DATA_REG);
And here the code size is growing, too.
What are the exact advantages of your version?
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
We are all agreed that your theory is crazy. The question which
divides us is whether it is crazy enough to have a chance of being
correct. My own feeling is that it is not crazy enough. - Niels Bohr
next prev parent reply other threads:[~2010-06-23 20:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-23 19:18 [U-Boot] [PATCH] cmd_ide: Convert to [read,write][b,w] Marek Vasut
2010-06-23 20:51 ` Wolfgang Denk [this message]
2010-06-24 0:36 ` Marek Vasut
2010-07-01 0:09 ` Marek Vasut
2010-07-01 0:44 ` Albert ARIBAUD
2010-07-01 3:33 ` Marek Vasut
2010-07-21 14:42 ` Marek Vasut
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