diff options
| author | Anthony Liguori <aliguori@us.ibm.com> | 2012-04-16 12:52:22 -0500 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-04-16 12:52:22 -0500 |
| commit | 52346e8c75eba1ece4a782565d5a5ce2e23d5117 (patch) | |
| tree | 4f488cf316c85b886e9ef4b67b85bbb4ad0d314f /docs/specs/acpi_pci_hotplug.txt | |
| parent | 8a6b8708e37a4df064aa3b36d7baa786110871f4 (diff) | |
| parent | cdde6ffc27517bdf069734fbc5693ce2b14edc75 (diff) | |
Merge remote-tracking branch 'mst/tags/for_anthony' into staging
* mst/tags/for_anthony:
pci: fix corrupted pci conf index register by unaligned write
acpi: explicitly account for >1 device per slot
acpi_piix4: Re-define PCI hotplug eject register read
acpi_piix4: Remove PCI_RMV_BASE write code
acpi_piix4: Fix PCI hotplug race
acpi_piix4: Disallow write to up/down PCI hotplug registers
virtio-pci: change virtio balloon PCI class code
ivshmem: add missing msix calls
vhost: readd assert statement
vhost: Fix size of dirty log sync on resize
pc: reduce duplication in compat machine types
piix_pci: fix typo in i400FX chipset init code
Diffstat (limited to 'docs/specs/acpi_pci_hotplug.txt')
| -rw-r--r-- | docs/specs/acpi_pci_hotplug.txt | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/docs/specs/acpi_pci_hotplug.txt b/docs/specs/acpi_pci_hotplug.txt index f0f74a7c7c..a839434f31 100644 --- a/docs/specs/acpi_pci_hotplug.txt +++ b/docs/specs/acpi_pci_hotplug.txt @@ -15,23 +15,31 @@ 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. +events. Read-only. 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. +events. Read-only. 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. +Write: Used by ACPI BIOS _EJ0 method to request device removal. +One bit per slot. + +Read: Hotplug features register. Used by platform to identify features +available. Current base feature set (no bits set): + - Read-only "up" register @0xae00, 4-byte access, bit per slot + - Read-only "down" register @0xae04, 4-byte access, bit per slot + - Read/write "eject" register @0xae08, 4-byte access, + write: bit per slot eject, read: hotplug feature set + - Read-only hotplug capable register @0xae0c, 4-byte access, bit per slot 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. +bit per slot. Read-only |