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xics: split to xics and xics-common

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The upcoming XICS-KVM support will use bits of emulated XICS code.
So this introduces new level of hierarchy - "xics-common" class. Both
emulated XICS and XICS-KVM will inherit from it and override class
callbacks when required.

The new "xics-common" class implements:
1. replaces static "nr_irqs" and "nr_servers" properties with
the dynamic ones and adds callbacks to be executed when properties
are set.
2. xics_cpu_setup() callback renamed to xics_common_cpu_setup() as
it is a common part for both XICS'es
3. xics_reset() renamed to xics_common_reset() for the same reason.

The emulated XICS changes:
1. the part of xics_realize() which creates ICPs is moved to
the "nr_servers" property callback as realize() is too late to
create/initialize devices and instance_init() is too early to create
devices as the number of child devices comes via the "nr_servers"
property.
2. added ics_initfn() which does a little part of what xics_realize() did.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexey Kardashevskiy 2013-09-26 16:18:42 +10:00 • committed by Alexander Graf
parent 456df19cf7
commit 5a3d7b23ba
3 changed files with 157 additions and 21 deletions
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20
include/hw/ppc/xics.h
View file

@ -29,9 +29,21 @@
#include "hw/sysbus.h"
#define TYPE_XICS_COMMON "xics-common"
#define XICS_COMMON(obj) OBJECT_CHECK(XICSState, (obj), TYPE_XICS_COMMON)
#define TYPE_XICS "xics"
#define XICS(obj) OBJECT_CHECK(XICSState, (obj), TYPE_XICS)
#define XICS_COMMON_CLASS(klass) \
OBJECT_CLASS_CHECK(XICSStateClass, (klass), TYPE_XICS_COMMON)
#define XICS_CLASS(klass) \
OBJECT_CLASS_CHECK(XICSStateClass, (klass), TYPE_XICS)
#define XICS_COMMON_GET_CLASS(obj) \
OBJECT_GET_CLASS(XICSStateClass, (obj), TYPE_XICS_COMMON)
#define XICS_GET_CLASS(obj) \
OBJECT_GET_CLASS(XICSStateClass, (obj), TYPE_XICS)
#define XICS_IPI 0x2
#define XICS_BUID 0x1
#define XICS_IRQ_BASE (XICS_BUID << 12)
@ -41,6 +53,7 @@
* (the kernel implementation supports more but we don't exploit
* that yet)
*/
typedef struct XICSStateClass XICSStateClass;
typedef struct XICSState XICSState;
typedef struct ICPStateClass ICPStateClass;
typedef struct ICPState ICPState;
@ -48,6 +61,13 @@ typedef struct ICSStateClass ICSStateClass;
typedef struct ICSState ICSState;
typedef struct ICSIRQState ICSIRQState;
struct XICSStateClass {
DeviceClass parent_class;
void (*set_nr_irqs)(XICSState *icp, uint32_t nr_irqs, Error **errp);
void (*set_nr_servers)(XICSState *icp, uint32_t nr_servers, Error **errp);
};
struct XICSState {
/*< private >*/
SysBusDevice parent_obj;