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[Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PC
From: |
Marcelo Tosatti |
Subject: |
[Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices |
Date: |
Sun, 12 Dec 2010 22:00:17 -0200 |
User-agent: |
Mutt/1.5.20 (2009-08-17) |
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).
- [Qemu-devel] seabios: acpi: add _RMV control method for PCI devices, Marcelo Tosatti, 2010/12/08
- [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices, Avi Kivity, 2010/12/11
- [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices,
Marcelo Tosatti <=
- [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices, Avi Kivity, 2010/12/13
- [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices, Gleb Natapov, 2010/12/13
- [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices, Avi Kivity, 2010/12/13
- [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices, Gleb Natapov, 2010/12/13
- [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices, Avi Kivity, 2010/12/13
- [Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices, Gleb Natapov, 2010/12/13
[Qemu-devel] Re: [SeaBIOS] seabios: acpi: add _RMV control method for PCI devices, Kevin O'Connor, 2010/12/12