From 085e956d2dbbc280727760ffa620b8a22db1cb6e Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Wed, 6 Nov 2013 14:41:17 +0100 Subject: [PATCH 41/81] ich9: Document why cannot_instantiate_with_device_add_yet RH-Author: Kevin Wolf Message-id: <1383748882-22831-13-git-send-email-kwolf@redhat.com> Patchwork-id: 55538 O-Subject: [RHEL-7.0 qemu-kvm PATCH v2 12/17] ich9: Document why 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 An ICH9 southbridge contains several PCI devices, some of them with multiple functions. We model each function as a separate qdev. Two of them need some special wiring set up in pc_q35_init() to work: the LPC controller at 00:1f.0, and the SMBus controller at 00:1f.3. Signed-off-by: Markus Armbruster Reviewed-by: Peter Maydell (cherry picked from pending upstream submission) Signed-off-by: Kevin Wolf --- hw/i2c/smbus_ich9.c | 6 +++++- hw/isa/lpc_ich9.c | 7 +++++-- 2 files changed, 10 insertions(+), 3 deletions(-) Signed-off-by: Miroslav Rezanina --- hw/i2c/smbus_ich9.c | 6 +++++- hw/isa/lpc_ich9.c | 7 +++++-- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/hw/i2c/smbus_ich9.c b/hw/i2c/smbus_ich9.c index c1ffa34..8d47eaf 100644 --- a/hw/i2c/smbus_ich9.c +++ b/hw/i2c/smbus_ich9.c @@ -97,11 +97,15 @@ static void ich9_smb_class_init(ObjectClass *klass, void *data) k->device_id = PCI_DEVICE_ID_INTEL_ICH9_6; k->revision = ICH9_A2_SMB_REVISION; k->class_id = PCI_CLASS_SERIAL_SMBUS; - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ dc->vmsd = &vmstate_ich9_smbus; dc->desc = "ICH9 SMBUS Bridge"; k->init = ich9_smbus_initfn; k->config_write = ich9_smbus_write_config; + /* + * Reason: part of ICH9 southbridge, needs to be wired up by + * pc_q35_init() + */ + dc->cannot_instantiate_with_device_add_yet = true; } i2c_bus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base) diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c index 580e9ac..4f834b9 100644 --- a/hw/isa/lpc_ich9.c +++ b/hw/isa/lpc_ich9.c @@ -603,14 +603,17 @@ static void ich9_lpc_class_init(ObjectClass *klass, void *data) dc->reset = ich9_lpc_reset; k->init = ich9_lpc_initfn; dc->vmsd = &vmstate_ich9_lpc; - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ k->config_write = ich9_lpc_config_write; dc->desc = "ICH9 LPC bridge"; k->vendor_id = PCI_VENDOR_ID_INTEL; k->device_id = PCI_DEVICE_ID_INTEL_ICH9_8; k->revision = ICH9_A2_LPC_REVISION; k->class_id = PCI_CLASS_BRIDGE_ISA; - + /* + * Reason: part of ICH9 southbridge, needs to be wired up by + * pc_q35_init() + */ + dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo ich9_lpc_info = { -- 1.7.1