| Message ID | 20101220170917.GA30684@amt.cnet |
|---|---|
| State | New |
| Headers | show |
On Mon, Dec 20, 2010 at 5:09 PM, Marcelo Tosatti <mtosatti@redhat.com> wrote: > > Document how QEMU communicates with ACPI BIOS > for PCI hotplug. > > Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> > > --- /dev/null 2010-12-14 09:23:48.414180082 -0200 > +++ qemu/docs/specs/acpi_pci_hotplug.txt 2010-12-20 15:00:26.000000000 -0200 > @@ -0,0 +1,39 @@ > +QEMU<->ACPI BIOS PCI hotplug interface > +-------------------------------------- > + > +QEMU supports PCI hotplug via ACPI, for PCI bus 0. This document > +describes the interface between QEMU and the ACPI BIOS. > + > +ACPI GPE block (IO ports 0xafe00-0xafe04): 0xae00-0xae0f?
On Mon, Dec 20, 2010 at 08:11:36PM +0000, Blue Swirl wrote: > On Mon, Dec 20, 2010 at 5:09 PM, Marcelo Tosatti <mtosatti@redhat.com> wrote: > > > > Document how QEMU communicates with ACPI BIOS > > for PCI hotplug. > > > > Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> > > > > --- /dev/null 2010-12-14 09:23:48.414180082 -0200 > > +++ qemu/docs/specs/acpi_pci_hotplug.txt 2010-12-20 15:00:26.000000000 -0200 > > @@ -0,0 +1,39 @@ > > +QEMU<->ACPI BIOS PCI hotplug interface > > +-------------------------------------- > > + > > +QEMU supports PCI hotplug via ACPI, for PCI bus 0. This document > > +describes the interface between QEMU and the ACPI BIOS. > > + > > +ACPI GPE block (IO ports 0xafe00-0xafe04): > > 0xae00-0xae0f? 0xaf0-0xaf3, thanks.
On 12/21/2010 04:41 PM, Marcelo Tosatti wrote: > Document how QEMU communicates with ACPI BIOS > for PCI hotplug. > > Signed-off-by: Marcelo Tosatti<mtosatti@redhat.com> > > --- /dev/null 2010-12-14 09:23:48.414180082 -0200 > +++ qemu/docs/specs/acpi_pci_hotplug.txt 2010-12-20 15:00:26.000000000 -0200 > @@ -0,0 +1,39 @@ > +QEMU<->ACPI BIOS PCI hotplug interface > +-------------------------------------- > + > +QEMU supports PCI hotplug via ACPI, for PCI bus 0. This document > +describes the interface between QEMU and the ACPI BIOS. > + > +ACPI GPE block (IO ports 0xafe0-0xafe3): > +----------------------------------------- > + > +Generic ACPI GPE block. Bit 1 (GPE.1) used to notify PCI hotplug/eject > +event to ACPI BIOS, via SCI interrupt. > + > +PCI slot injection notification pending (IO port 0xae00-0xae03): > +--------------------------------------------------------------- > +Slot injection notification pending. One bit per slot. > + > +Read by ACPI BIOS GPE.1 handler to notify OS of injection > +events. > + > +PCI slot removal notification (IO port 0xae04-0xae07): > +----------------------------------------------------- > +Slot removal notification pending. One bit per slot. > + > +Read by ACPI BIOS GPE.1 handler to notify OS of removal > +events. > + > +PCI device eject (IO port 0xae08-0xae0b): > +---------------------------------------- > + > +Used by ACPI BIOS _EJ0 method to request device removal. One bit per slot. > +Reads return 0. > + > +PCI removability status (IO port 0xae0c-0xae0f): > +----------------------------------------------- > + > +Used by ACPI BIOS _RMV method to indicate removability status to OS. One > +bit per slot. > + > + Do we support byte and word access to those ports, or just dword access? With this documentation, I'm fine with the _RMV DSDT patch.
--- /dev/null 2010-12-14 09:23:48.414180082 -0200 +++ qemu/docs/specs/acpi_pci_hotplug.txt 2010-12-20 15:00:26.000000000 -0200 @@ -0,0 +1,39 @@ +QEMU<->ACPI BIOS PCI hotplug interface +-------------------------------------- + +QEMU supports PCI hotplug via ACPI, for PCI bus 0. This document +describes the interface between QEMU and the ACPI BIOS. + +ACPI GPE block (IO ports 0xafe00-0xafe04): +----------------------------------------- + +Generic ACPI GPE block. Bit 1 (GPE.1) used to notify PCI hotplug/eject +event to ACPI BIOS, via SCI interrupt. + +PCI slot injection notification pending (IO port 0xae00-0xae03): +--------------------------------------------------------------- +Slot injection notification pending. One bit per slot. + +Read by ACPI BIOS GPE.1 handler to notify OS of injection +events. + +PCI slot removal notification (IO port 0xae04-0xae07): +----------------------------------------------------- +Slot removal notification pending. One bit per slot. + +Read by ACPI BIOS GPE.1 handler to notify OS of removal +events. + +PCI device eject (IO port 0xae08-0xae0b): +---------------------------------------- + +Used by ACPI BIOS _EJ0 method to request device removal. One bit per slot. +Reads return 0. + +PCI removability status (IO port 0xae0c-0xae0f): +----------------------------------------------- + +Used by ACPI BIOS _RMV method to indicate removability status to OS. One +bit per slot. + +
Document how QEMU communicates with ACPI BIOS for PCI hotplug. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>