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From b33784c26d96c3c020f4b0245f77731af3f88b8e Mon Sep 17 00:00:00 2001
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From: Marcel Apfelbaum <marcel.a@redhat.com>
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Date: Wed, 6 Nov 2013 16:32:29 +0100
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Subject: [PATCH 70/81] fw_cfg: add API to find FW cfg object
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RH-Author: Marcel Apfelbaum <marcel.a@redhat.com>
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Message-id: <1383755557-21590-2-git-send-email-marcel.a@redhat.com>
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Patchwork-id: 55546
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O-Subject: [RHEL-7 qemu-kvm PATCH v3 1/9] fw_cfg: add API to find FW cfg object
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Bugzilla: 990601
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
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RH-Acked-by: Alex Williamson <alex.williamson@redhat.com>
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From: "Michael S. Tsirkin" <mst@redhat.com>
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Remove some code duplication by adding a
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function to look up the fw cfg file.
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This way, we don't need to duplicate same strings everywhere.
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Use by both fw cfg and pvpanic device.
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 600c60b76d0682f6c39d19bfff79da9321e8cf86)
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Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
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---
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hw/misc/pvpanic.c | 2 +-
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hw/nvram/fw_cfg.c | 15 ++++++++++++---
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include/hw/nvram/fw_cfg.h | 2 ++
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3 files changed, 15 insertions(+), 4 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/misc/pvpanic.c | 2 +-
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hw/nvram/fw_cfg.c | 15 ++++++++++++---
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include/hw/nvram/fw_cfg.h | 2 ++
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3 files changed, 15 insertions(+), 4 deletions(-)
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diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c
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index 439d636..d17c3c9 100644
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--- a/hw/misc/pvpanic.c
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+++ b/hw/misc/pvpanic.c
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@@ -96,7 +96,7 @@ static int pvpanic_isa_initfn(ISADevice *dev)
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isa_register_ioport(dev, &s->io, s->ioport);
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if (!port_configured) {
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- fw_cfg = object_resolve_path("/machine/fw_cfg", NULL);
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+ fw_cfg = fw_cfg_find();
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if (fw_cfg) {
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fw_cfg_add_file(fw_cfg, "etc/pvpanic-port",
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g_memdup(&s->ioport, sizeof(s->ioport)),
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diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
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index 3fa1488..064344d 100644
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--- a/hw/nvram/fw_cfg.c
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+++ b/hw/nvram/fw_cfg.c
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@@ -32,6 +32,9 @@
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#define FW_CFG_SIZE 2
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#define FW_CFG_DATA_SIZE 1
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+#define TYPE_FW_CFG "fw_cfg"
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+#define FW_CFG_NAME "fw_cfg"
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+#define FW_CFG_PATH "/machine/" FW_CFG_NAME
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typedef struct FWCfgEntry {
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uint32_t len;
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@@ -493,8 +496,8 @@ FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
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s = DO_UPCAST(FWCfgState, busdev.qdev, dev);
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- if (!object_resolve_path("/machine/fw_cfg", NULL)) {
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- object_property_add_child(qdev_get_machine(), "fw_cfg", OBJECT(s),
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+ if (!object_resolve_path(FW_CFG_PATH, NULL)) {
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+ object_property_add_child(qdev_get_machine(), FW_CFG_NAME, OBJECT(s),
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NULL);
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}
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@@ -553,6 +556,12 @@ static Property fw_cfg_properties[] = {
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DEFINE_PROP_END_OF_LIST(),
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};
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+FWCfgState *fw_cfg_find(void)
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+{
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+ return OBJECT_CHECK(FWCfgState, object_resolve_path(FW_CFG_PATH, NULL),
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+ TYPE_FW_CFG);
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+}
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+
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static void fw_cfg_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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@@ -565,7 +574,7 @@ static void fw_cfg_class_init(ObjectClass *klass, void *data)
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}
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static const TypeInfo fw_cfg_info = {
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- .name = "fw_cfg",
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+ .name = TYPE_FW_CFG,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(FWCfgState),
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.class_init = fw_cfg_class_init,
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diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h
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index 3e4a334..48a8aa4 100644
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--- a/include/hw/nvram/fw_cfg.h
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+++ b/include/hw/nvram/fw_cfg.h
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@@ -73,6 +73,8 @@ void fw_cfg_add_file(FWCfgState *s, const char *filename, void *data,
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FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
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hwaddr crl_addr, hwaddr data_addr);
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+FWCfgState *fw_cfg_find(void);
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+
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#endif /* NO_QEMU_PROTOS */
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#endif
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--
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1.7.1
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