From ab84fc1c353cd396b420e3c3360508ada594f6a9 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Thu, 12 Jan 2023 15:02:59 +0100 Subject: x86: pcihp: acpi: prepare slot ignore rule to work with self describing bridges Before switching pci bridges to AcpiDevAmlIf interface, ensure that ignored slots are handled correctly. (existing rule works but only if bridge doesn't have AcpiDevAmlIf interface). While at it rewrite related comments to be less confusing (hopefully). Signed-off-by: Igor Mammedov Message-Id: <20230112140312.3096331-28-imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/acpi-build.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 6368fcefa3..8045b20713 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -423,14 +423,22 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, hotpluggbale_slot = bsel && dc->hotpluggable && !cold_plugged_bridge; - /* - * allow describing coldplugged bridges in ACPI even if they are not - * on function 0, as they are not unpluggable, for all other devices - * generate description only for function 0 per slot, and for other - * functions if device on function provides its own AML - */ - if (func && !bridge_in_acpi && !get_dev_aml_func(DEVICE(pdev))) { - continue; + if (func) { + if (IS_PCI_BRIDGE(pdev)) { + /* + * Ignore only hotplugged PCI bridges on !0 functions, but + * allow describing cold plugged bridges on all functions + */ + if (DEVICE(pdev)->hotplugged) { + continue; + } + } else if (!get_dev_aml_func(DEVICE(pdev))) { + /* + * Ignore all other devices on !0 functions unless they + * have AML description (i.e have get_dev_aml_func() != 0) + */ + continue; + } } } else { /* -- cgit v1.2.3