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[Qemu-devel] [PATCH v2 14/36] qdev: HotplugHandler: rename unplug callba
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [PATCH v2 14/36] qdev: HotplugHandler: rename unplug callback to unplug_request |
Date: |
Fri, 26 Sep 2014 09:28:19 +0000 |
'HotplugHandler.unplug' callback is currently used as async
call to issue unplug request for device that implements it.
Renaming 'unplug' callback to 'unplug_request' should help to
avoid confusion about what callback does and would allow to
introduce 'unplug' callback that would perform actual device
removal when guest is ready for it.
Signed-off-by: Igor Mammedov <address@hidden>
Reviewed-by: Paolo Bonzini <address@hidden>
---
Patch is prompted by reviewing https://patchwork.ozlabs.org/patch/383372/
Dedicated 'unplug' callback could be used by bus-less pc-dimm
device. It would allow to call HotplugHandler.unplug callback
from ACPI code when guest calls _EJ0 method and execute board
specific code (PCMachine) to unmap pc-dimm from guest's address
space and perform necessary cleanup. The same applies to CPU
unplug.
---
hw/acpi/piix4.c | 6 +++---
hw/core/hotplug.c | 10 +++++-----
hw/core/qdev.c | 3 ++-
hw/isa/lpc_ich9.c | 6 +++---
hw/pci-bridge/pci_bridge_dev.c | 2 +-
hw/pci/pcie.c | 4 ++--
hw/pci/pcie_port.c | 2 +-
hw/pci/shpc.c | 4 ++--
include/hw/hotplug.h | 16 +++++++++-------
include/hw/pci/pcie.h | 4 ++--
include/hw/pci/shpc.h | 4 ++--
11 files changed, 32 insertions(+), 29 deletions(-)
diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index b72b34e..0bfa814 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -354,8 +354,8 @@ static void piix4_device_plug_cb(HotplugHandler
*hotplug_dev,
}
}
-static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev,
- DeviceState *dev, Error **errp)
+static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
{
PIIX4PMState *s = PIIX4_PM(hotplug_dev);
@@ -615,7 +615,7 @@ static void piix4_pm_class_init(ObjectClass *klass, void
*data)
dc->cannot_instantiate_with_device_add_yet = true;
dc->hotpluggable = false;
hc->plug = piix4_device_plug_cb;
- hc->unplug = piix4_device_unplug_cb;
+ hc->unplug_request = piix4_device_unplug_request_cb;
adevc->ospm_status = piix4_ospm_status;
}
diff --git a/hw/core/hotplug.c b/hw/core/hotplug.c
index 5573d9d..2ec4736 100644
--- a/hw/core/hotplug.c
+++ b/hw/core/hotplug.c
@@ -23,14 +23,14 @@ void hotplug_handler_plug(HotplugHandler *plug_handler,
}
}
-void hotplug_handler_unplug(HotplugHandler *plug_handler,
- DeviceState *plugged_dev,
- Error **errp)
+void hotplug_handler_unplug_request(HotplugHandler *plug_handler,
+ DeviceState *plugged_dev,
+ Error **errp)
{
HotplugHandlerClass *hdc = HOTPLUG_HANDLER_GET_CLASS(plug_handler);
- if (hdc->unplug) {
- hdc->unplug(plug_handler, plugged_dev, errp);
+ if (hdc->unplug_request) {
+ hdc->unplug_request(plug_handler, plugged_dev, errp);
}
}
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 5e5b963..c98e5db 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -227,7 +227,8 @@ void qdev_unplug(DeviceState *dev, Error **errp)
qdev_hot_removed = true;
if (dev->parent_bus && dev->parent_bus->hotplug_handler) {
- hotplug_handler_unplug(dev->parent_bus->hotplug_handler, dev, errp);
+ hotplug_handler_unplug_request(dev->parent_bus->hotplug_handler,
+ dev, errp);
} else {
assert(dc->unplug != NULL);
if (dc->unplug(dev) < 0) { /* legacy handler */
diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index 177023b..530b074 100644
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -607,8 +607,8 @@ static void ich9_device_plug_cb(HotplugHandler *hotplug_dev,
ich9_pm_device_plug_cb(&lpc->pm, dev, errp);
}
-static void ich9_device_unplug_cb(HotplugHandler *hotplug_dev,
- DeviceState *dev, Error **errp)
+static void ich9_device_unplug_request_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
{
error_setg(errp, "acpi: device unplug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
@@ -676,7 +676,7 @@ static void ich9_lpc_class_init(ObjectClass *klass, void
*data)
*/
dc->cannot_instantiate_with_device_add_yet = true;
hc->plug = ich9_device_plug_cb;
- hc->unplug = ich9_device_unplug_cb;
+ hc->unplug_request = ich9_device_unplug_request_cb;
adevc->ospm_status = ich9_pm_ospm_status;
}
diff --git a/hw/pci-bridge/pci_bridge_dev.c b/hw/pci-bridge/pci_bridge_dev.c
index 92799d0..252ea5e 100644
--- a/hw/pci-bridge/pci_bridge_dev.c
+++ b/hw/pci-bridge/pci_bridge_dev.c
@@ -150,7 +150,7 @@ static void pci_bridge_dev_class_init(ObjectClass *klass,
void *data)
dc->vmsd = &pci_bridge_dev_vmstate;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
hc->plug = shpc_device_hotplug_cb;
- hc->unplug = shpc_device_hot_unplug_cb;
+ hc->unplug_request = shpc_device_hot_unplug_request_cb;
}
static const TypeInfo pci_bridge_dev_info = {
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index 1babddf..b64a004 100644
--- a/hw/pci/pcie.c
+++ b/hw/pci/pcie.c
@@ -262,8 +262,8 @@ void pcie_cap_slot_hotplug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev,
PCI_EXP_HP_EV_PDC | PCI_EXP_HP_EV_ABP);
}
-void pcie_cap_slot_hot_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
- Error **errp)
+void pcie_cap_slot_hot_unplug_request_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
{
uint8_t *exp_cap;
diff --git a/hw/pci/pcie_port.c b/hw/pci/pcie_port.c
index fa24877..40ca8d5 100644
--- a/hw/pci/pcie_port.c
+++ b/hw/pci/pcie_port.c
@@ -154,7 +154,7 @@ static void pcie_slot_class_init(ObjectClass *oc, void
*data)
dc->props = pcie_slot_props;
hc->plug = pcie_cap_slot_hotplug_cb;
- hc->unplug = pcie_cap_slot_hot_unplug_cb;
+ hc->unplug_request = pcie_cap_slot_hot_unplug_request_cb;
}
static const TypeInfo pcie_slot_type_info = {
diff --git a/hw/pci/shpc.c b/hw/pci/shpc.c
index 1fcb8c4..65b2f51 100644
--- a/hw/pci/shpc.c
+++ b/hw/pci/shpc.c
@@ -549,8 +549,8 @@ void shpc_device_hotplug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev,
shpc_interrupt_update(pci_hotplug_dev);
}
-void shpc_device_hot_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
- Error **errp)
+void shpc_device_hot_unplug_request_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
{
Error *local_err = NULL;
PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev);
diff --git a/include/hw/hotplug.h b/include/hw/hotplug.h
index a6533cb..e397d08 100644
--- a/include/hw/hotplug.h
+++ b/include/hw/hotplug.h
@@ -47,7 +47,9 @@ typedef void (*hotplug_fn)(HotplugHandler *plug_handler,
*
* @parent: Opaque parent interface.
* @plug: plug callback.
- * @unplug: unplug callback.
+ * @unplug_request: unplug request callback.
+ * Used as a means to initiate device unplug for devices that
+ * require asynchronous unplug handling.
*/
typedef struct HotplugHandlerClass {
/* <private> */
@@ -55,7 +57,7 @@ typedef struct HotplugHandlerClass {
/* <public> */
hotplug_fn plug;
- hotplug_fn unplug;
+ hotplug_fn unplug_request;
} HotplugHandlerClass;
/**
@@ -68,11 +70,11 @@ void hotplug_handler_plug(HotplugHandler *plug_handler,
Error **errp);
/**
- * hotplug_handler_unplug:
+ * hotplug_handler_unplug_request:
*
- * Call #HotplugHandlerClass.unplug callback of @plug_handler.
+ * Calls #HotplugHandlerClass.unplug_request callback of @plug_handler.
*/
-void hotplug_handler_unplug(HotplugHandler *plug_handler,
- DeviceState *plugged_dev,
- Error **errp);
+void hotplug_handler_unplug_request(HotplugHandler *plug_handler,
+ DeviceState *plugged_dev,
+ Error **errp);
#endif
diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h
index d139d58..b48a7a2 100644
--- a/include/hw/pci/pcie.h
+++ b/include/hw/pci/pcie.h
@@ -128,6 +128,6 @@ extern const VMStateDescription vmstate_pcie_device;
void pcie_cap_slot_hotplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp);
-void pcie_cap_slot_hot_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
- Error **errp);
+void pcie_cap_slot_hot_unplug_request_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp);
#endif /* QEMU_PCIE_H */
diff --git a/include/hw/pci/shpc.h b/include/hw/pci/shpc.h
index eef1a1a..025bc5b 100644
--- a/include/hw/pci/shpc.h
+++ b/include/hw/pci/shpc.h
@@ -46,8 +46,8 @@ void shpc_cap_write_config(PCIDevice *d, uint32_t addr,
uint32_t val, int len);
void shpc_device_hotplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp);
-void shpc_device_hot_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
- Error **errp);
+void shpc_device_hot_unplug_request_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp);
extern VMStateInfo shpc_vmstate_info;
#define SHPC_VMSTATE(_field, _type) \
--
1.8.3.1
- [Qemu-devel] [PATCH v2 04/36] test: virtio-rng: check if hot-plug/unplug works, (continued)
- [Qemu-devel] [PATCH v2 04/36] test: virtio-rng: check if hot-plug/unplug works, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 05/36] test: virtio-net: check if hot-plug/unplug works, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 06/36] test: virtio-blk: check if hot-plug/unplug works, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 07/36] test: usb: move uhci port test code to libqos/usb.c, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 08/36] test: usb: add port test to uhci unit test, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 09/36] test: usb: generic usb device hotplug, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 10/36] test: usb: usb-storage hotplug test, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 12/36] access BusState.allow_hotplug using wraper qbus_is_hotpluggable(), Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 13/36] qdev: do not allow to instantiate non hotpluggable device with device_add, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 14/36] qdev: HotplugHandler: rename unplug callback to unplug_request,
Igor Mammedov <=
- [Qemu-devel] [PATCH v2 15/36] qdev: HotplugHandler: provide unplug callback, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 16/36] qdev: add simple/generic unplug callback for HotplugHandler, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 18/36] qdev: drop hotplug check from bus_add_child(), Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 17/36] qdev: add wrapper to set BUS as HotplugHandler, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 20/36] virtio-pci: drop BusState.allow_hotplug, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 21/36] virtio-serial: convert to hotplug-handler API, Igor Mammedov, 2014/09/26
- [Qemu-devel] [PATCH v2 22/36] virtio-mmio: drop useless bus->allow_hotplug = 0, Igor Mammedov, 2014/09/26