From: Fabrice Bellard <fabrice@bellard.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] PIIX4 SMBus host, EEPROM device emulation
Date: Tue, 23 Jan 2007 22:49:59 +0100 [thread overview]
Message-ID: <45B68307.9090509@bellard.org> (raw)
In-Reply-To: <c1bf1cf0701231326s42e3c404y4fbf66abd7e2ea30@mail.gmail.com>
Ed Swierk wrote:
> The attached patch adds SMBus host support to the emulated PIIX4 power
> management device (acpi.c), and adds an emulated serial EEPROM device
> accessible via the SMBus interface.
>
> I tried to follow the Intel 82371AB spec for the SMBus support; the
> interface should be generic enough to implement a variety of
> SMBus-compliant devices.
>
> The EEPROM device can use a file for persistent storage
> (smbus_eeprom.bin in the BIOS directory). If this file does not exist,
> a temporary buffer is used instead.
>
> I tested the devices with Linux using the i2c-piix4 host driver and
> the eeprom chip driver. I have no idea what will happen on other OSes.
>
> Comments and suggestions welcome.
> [...]
OK, but avoid using mmap() in the device code. Moreover, files in the
BIOS directory are not writable.
Regards,
Fabrice.
next prev parent reply other threads:[~2007-01-23 22:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-23 21:26 [Qemu-devel] [PATCH] PIIX4 SMBus host, EEPROM device emulation Ed Swierk
2007-01-23 21:49 ` Fabrice Bellard [this message]
2007-01-23 22:30 ` Ed Swierk
2007-01-23 23:22 ` Ed Swierk
2007-01-24 1:55 ` Ed Swierk
2007-01-24 20:33 ` Fabrice Bellard
2007-01-31 12:07 ` Thiemo Seufer
2007-01-31 17:16 ` Ed Swierk
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