Signed-off-by: Anthony Liguori <aligu...@us.ibm.com> --- docs/specs/acpi_pci_hotplug.md | 38 ++++++++++++++++++++++++++++++++++++++ docs/specs/acpi_pci_hotplug.txt | 37 ------------------------------------- 2 files changed, 38 insertions(+), 37 deletions(-) create mode 100644 docs/specs/acpi_pci_hotplug.md delete mode 100644 docs/specs/acpi_pci_hotplug.txt
diff --git a/docs/specs/acpi_pci_hotplug.md b/docs/specs/acpi_pci_hotplug.md new file mode 100644 index 0000000..9621187 --- /dev/null +++ b/docs/specs/acpi_pci_hotplug.md @@ -0,0 +1,38 @@ +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, byte access) +---------------------------------------------------- + +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, 4-byte access) +------------------------------------------------------------------------------ + +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, 4-byte access) +-------------------------------------------------------------------- + +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, 4-byte access) +------------------------------------------------------- + +Used by ACPI BIOS _EJ0 method to request device removal. One bit per slot. + +Reads return 0. + +PCI removability status (IO port 0xae0c-0xae0f, 4-byte access) +-------------------------------------------------------------- + +Used by ACPI BIOS _RMV method to indicate removability status to OS. One bit +per slot. diff --git a/docs/specs/acpi_pci_hotplug.txt b/docs/specs/acpi_pci_hotplug.txt deleted file mode 100644 index f0f74a7..0000000 --- a/docs/specs/acpi_pci_hotplug.txt +++ /dev/null @@ -1,37 +0,0 @@ -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, byte access): ------------------------------------------ - -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, 4-byte access): ---------------------------------------------------------------- -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, 4-byte access): ------------------------------------------------------ -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, 4-byte access): ----------------------------------------- - -Used by ACPI BIOS _EJ0 method to request device removal. One bit per slot. -Reads return 0. - -PCI removability status (IO port 0xae0c-0xae0f, 4-byte access): ------------------------------------------------ - -Used by ACPI BIOS _RMV method to indicate removability status to OS. One -bit per slot. -- 1.7.4.1
