From 3a10d87d90ff5f2aeaf02addac57f5a3346f263c Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Wed, 6 Nov 2013 14:41:18 +0100 Subject: [PATCH 42/81] piix3 piix4: Clean up use of cannot_instantiate_with_device_add_yet RH-Author: Kevin Wolf Message-id: <1383748882-22831-14-git-send-email-kwolf@redhat.com> Patchwork-id: 55539 O-Subject: [RHEL-7.0 qemu-kvm PATCH v2 13/17] piix3 piix4: Clean up use of cannot_instantiate_with_device_add_yet Bugzilla: 1001216 RH-Acked-by: Marcel Apfelbaum RH-Acked-by: Paolo Bonzini RH-Acked-by: Kevin Wolf RH-Acked-by: Miroslav Rezanina From: Markus Armbruster A PIIX3/PIIX4 southbridge has multiple functions. We model each function as a separate qdev. Two of them need some special wiring set up in pc_init1() or mips_malta_init() to work: the ISA bridge at 01.0, and the SMBus controller at 01.3. The IDE controller at 01.1 (piix3-ide, piix3-ide-xen, piix4-ide) has always had cannot_instantiate_with_device_add_yet set, but there is no obvious reason why device_add could not work for them. Drop it. (cherry picked from pending upstream submission) Signed-off-by: Markus Armbruster Signed-off-by: Kevin Wolf --- hw/acpi/piix4.c | 6 +++++- hw/ide/piix.c | 3 --- hw/isa/piix4.c | 6 +++++- hw/pci-host/piix.c | 12 ++++++++++-- 4 files changed, 20 insertions(+), 7 deletions(-) Signed-off-by: Miroslav Rezanina --- hw/acpi/piix4.c | 6 +++++- hw/ide/piix.c | 3 --- hw/isa/piix4.c | 6 +++++- hw/pci-host/piix.c | 12 ++++++++++-- 4 files changed, 20 insertions(+), 7 deletions(-) diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c index 46685b7..d79a7b0 100644 --- a/hw/acpi/piix4.c +++ b/hw/acpi/piix4.c @@ -494,9 +494,13 @@ static void piix4_pm_class_init(ObjectClass *klass, void *data) k->revision = 0x03; k->class_id = PCI_CLASS_BRIDGE_OTHER; dc->desc = "PM"; - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ dc->vmsd = &vmstate_acpi; dc->props = piix4_pm_properties; + /* + * Reason: part of PIIX4 southbridge, needs to be wired up, + * e.g. by mips_malta_init() + */ + dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo piix4_pm_info = { diff --git a/hw/ide/piix.c b/hw/ide/piix.c index e6864b1..304cab0 100644 --- a/hw/ide/piix.c +++ b/hw/ide/piix.c @@ -249,7 +249,6 @@ static void piix3_ide_class_init(ObjectClass *klass, void *data) k->device_id = PCI_DEVICE_ID_INTEL_82371SB_1; k->class_id = PCI_CLASS_STORAGE_IDE; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ } static const TypeInfo piix3_ide_info = { @@ -269,7 +268,6 @@ static void piix3_ide_xen_class_init(ObjectClass *klass, void *data) k->device_id = PCI_DEVICE_ID_INTEL_82371SB_1; k->class_id = PCI_CLASS_STORAGE_IDE; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ dc->unplug = pci_piix3_xen_ide_unplug; } @@ -292,7 +290,6 @@ static void piix4_ide_class_init(ObjectClass *klass, void *data) k->device_id = PCI_DEVICE_ID_INTEL_82371AB; k->class_id = PCI_CLASS_STORAGE_IDE; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ } static const TypeInfo piix4_ide_info = { diff --git a/hw/isa/piix4.c b/hw/isa/piix4.c index 10bf8ff..e7c75f1 100644 --- a/hw/isa/piix4.c +++ b/hw/isa/piix4.c @@ -113,8 +113,12 @@ static void piix4_class_init(ObjectClass *klass, void *data) k->device_id = PCI_DEVICE_ID_INTEL_82371AB_0; k->class_id = PCI_CLASS_BRIDGE_ISA; dc->desc = "ISA bridge"; - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ dc->vmsd = &vmstate_piix4; + /* + * Reason: part of PIIX4 southbridge, needs to be wired up, + * e.g. by mips_malta_init() + */ + dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo piix4_info = { diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c index 56fc7be..c89b76b 100644 --- a/hw/pci-host/piix.c +++ b/hw/pci-host/piix.c @@ -564,7 +564,6 @@ static void piix3_class_init(ObjectClass *klass, void *data) dc->desc = "ISA bridge"; dc->vmsd = &vmstate_piix3; - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ k->no_hotplug = 1; k->init = piix3_initfn; k->config_write = piix3_write_config; @@ -572,6 +571,11 @@ static void piix3_class_init(ObjectClass *klass, void *data) /* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */ k->device_id = PCI_DEVICE_ID_INTEL_82371SB_0; k->class_id = PCI_CLASS_BRIDGE_ISA; + /* + * Reason: part of PIIX3 southbridge, needs to be wired up by + * pc_piix.c's pc_init1() + */ + dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo piix3_info = { @@ -588,7 +592,6 @@ static void piix3_xen_class_init(ObjectClass *klass, void *data) dc->desc = "ISA bridge"; dc->vmsd = &vmstate_piix3; - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ k->no_hotplug = 1; k->init = piix3_initfn; k->config_write = piix3_write_config_xen; @@ -596,6 +599,11 @@ static void piix3_xen_class_init(ObjectClass *klass, void *data) /* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */ k->device_id = PCI_DEVICE_ID_INTEL_82371SB_0; k->class_id = PCI_CLASS_BRIDGE_ISA; + /* + * Reason: part of PIIX3 southbridge, needs to be wired up by + * pc_piix.c's pc_init1() + */ + dc->cannot_instantiate_with_device_add_yet = true; }; static const TypeInfo piix3_xen_info = { -- 1.7.1