From: Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: seabios@seabios.org, qemu-devel@nongnu.org
Subject: [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices
Date: Sun, 12 Dec 2010 22:00:17 -0200 [thread overview]
Message-ID: <20101213000017.GA8265@amt.cnet> (raw)
In-Reply-To: <4D032AB2.6080201@redhat.com>
On Sat, Dec 11, 2010 at 09:39:30AM +0200, Avi Kivity wrote:
> On 12/08/2010 07:08 PM, Marcelo Tosatti wrote:
> >Use _RMV method to indicate whether device can be removed.
> >
> >Data is retrieved from QEMU via I/O port 0xae0c.
> >
>
> Where did this port come from?
Its the next available address after "PCI EJ base", used
for QEMU<->ACPI hotplug communication.
> What's the protocol?
ACPI reads the 32-bit field indicating the return value of the _RMV
method (which is used by Windows to decide removability). 1-bit per
slot.
More ports have to be registered if more buses are added.
> Maybe we should do this via fw_cfg.
I don't see a need for it? (yes, it might be possible, but i'm not
familiar enough with AML).
next prev parent reply other threads:[~2010-12-13 0:02 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-08 17:08 [Qemu-devel] seabios: acpi: add _RMV control method for PCI devices Marcelo Tosatti
2010-12-08 17:34 ` [Qemu-devel] " Gleb Natapov
2010-12-08 18:01 ` Marcelo Tosatti
2010-12-08 19:58 ` Gleb Natapov
2010-12-08 21:23 ` Marcelo Tosatti
2010-12-11 7:39 ` [Qemu-devel] Re: [SeaBIOS] " Avi Kivity
2010-12-13 0:00 ` Marcelo Tosatti [this message]
2010-12-13 8:41 ` Avi Kivity
2010-12-13 8:49 ` Gleb Natapov
2010-12-13 8:53 ` Avi Kivity
2010-12-13 9:03 ` Gleb Natapov
2010-12-13 9:10 ` Avi Kivity
2010-12-13 9:16 ` Gleb Natapov
2010-12-12 19:11 ` Kevin O'Connor
2010-12-12 19:49 ` Gleb Natapov
2010-12-12 19:57 ` Kevin O'Connor
2010-12-20 8:49 ` Marcelo Tosatti
2010-12-20 9:15 ` Avi Kivity
2010-12-20 17:05 ` Marcelo Tosatti
2010-12-20 17:44 ` Avi Kivity
2010-12-20 18:23 ` Marcelo Tosatti
2011-01-05 11:10 ` [Qemu-devel] " Gleb Natapov
2011-01-06 2:27 ` [Qemu-devel] Re: [SeaBIOS] " Kevin O'Connor
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