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Convert the PCI hotplug spec document to rST. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Igor Mammedov <imammedo@redhat.com>pull/221/head
2 changed files with 21 additions and 17 deletions
@ -1,45 +1,48 @@ |
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QEMU<->ACPI BIOS PCI hotplug interface |
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-------------------------------------- |
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====================================== |
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QEMU supports PCI hotplug via ACPI, for PCI bus 0. This document |
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describes the interface between QEMU and the ACPI BIOS. |
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ACPI GPE block (IO ports 0xafe0-0xafe3, byte access): |
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----------------------------------------- |
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ACPI GPE block (IO ports 0xafe0-0xafe3, byte access) |
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---------------------------------------------------- |
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Generic ACPI GPE block. Bit 1 (GPE.1) used to notify PCI hotplug/eject |
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event to ACPI BIOS, via SCI interrupt. |
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PCI slot injection notification pending (IO port 0xae00-0xae03, 4-byte access): |
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--------------------------------------------------------------- |
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PCI slot injection notification pending (IO port 0xae00-0xae03, 4-byte access) |
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------------------------------------------------------------------------------ |
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Slot injection notification pending. One bit per slot. |
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Read by ACPI BIOS GPE.1 handler to notify OS of injection |
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events. Read-only. |
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PCI slot removal notification (IO port 0xae04-0xae07, 4-byte access): |
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----------------------------------------------------- |
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PCI slot removal notification (IO port 0xae04-0xae07, 4-byte access) |
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-------------------------------------------------------------------- |
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Slot removal notification pending. One bit per slot. |
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Read by ACPI BIOS GPE.1 handler to notify OS of removal |
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events. Read-only. |
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PCI device eject (IO port 0xae08-0xae0b, 4-byte access): |
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---------------------------------------- |
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PCI device eject (IO port 0xae08-0xae0b, 4-byte access) |
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------------------------------------------------------- |
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Write: Used by ACPI BIOS _EJ0 method to request device removal. |
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One bit per slot. |
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Read: Hotplug features register. Used by platform to identify features |
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available. Current base feature set (no bits set): |
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- Read-only "up" register @0xae00, 4-byte access, bit per slot |
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- Read-only "down" register @0xae04, 4-byte access, bit per slot |
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- Read/write "eject" register @0xae08, 4-byte access, |
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write: bit per slot eject, read: hotplug feature set |
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- Read-only hotplug capable register @0xae0c, 4-byte access, bit per slot |
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PCI removability status (IO port 0xae0c-0xae0f, 4-byte access): |
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----------------------------------------------- |
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- Read-only "up" register @0xae00, 4-byte access, bit per slot |
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- Read-only "down" register @0xae04, 4-byte access, bit per slot |
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- Read/write "eject" register @0xae08, 4-byte access, |
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write: bit per slot eject, read: hotplug feature set |
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- Read-only hotplug capable register @0xae0c, 4-byte access, bit per slot |
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PCI removability status (IO port 0xae0c-0xae0f, 4-byte access) |
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-------------------------------------------------------------- |
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Used by ACPI BIOS _RMV method to indicate removability status to OS. One |
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bit per slot. Read-only |
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bit per slot. Read-only. |
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