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/*
* QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
*
* PAPR Virtualized Interrupt System, aka ICS/ICP aka xics
*
* Copyright (c) 2010,2011 David Gibson, IBM Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef XICS_H
#define XICS_H
#include "exec/memory.h"
#include "hw/qdev-core.h"
#include "qom/object.h"
#define XICS_IPI 0x2
#define XICS_BUID 0x1
#define XICS_IRQ_BASE (XICS_BUID << 12)
/*
* We currently only support one BUID which is our interrupt base
* (the kernel implementation supports more but we don't exploit
* that yet)
*/
typedef struct PnvICPState PnvICPState;
typedef struct ICSStateClass ICSStateClass;
typedef struct ICSState ICSState;
typedef struct ICSIRQState ICSIRQState;
typedef struct XICSFabric XICSFabric;
#define TYPE_ICP "icp"
OBJECT_DECLARE_TYPE(ICPState, ICPStateClass,
icp, ICP)
#define TYPE_PNV_ICP "pnv-icp"
DECLARE_INSTANCE_CHECKER(PnvICPState, PNV_ICP,
TYPE_PNV_ICP)
struct ICPStateClass {
DeviceClass parent_class;
DeviceRealize parent_realize;
};
struct ICPState {
/*< private >*/
DeviceState parent_obj;
/*< public >*/
CPUState *cs;
ICSState *xirr_owner;
uint32_t xirr;
uint8_t pending_priority;
uint8_t mfrr;
qemu_irq output;
XICSFabric *xics;
};
#define ICP_PROP_XICS "xics"
#define ICP_PROP_CPU "cpu"
struct PnvICPState {
ICPState parent_obj;
MemoryRegion mmio;
uint32_t links[3];
};
#define TYPE_ICS "ics"
DECLARE_OBJ_CHECKERS(ICSState, ICSStateClass,
ICS, TYPE_ICS)
struct ICSStateClass {
DeviceClass parent_class;
DeviceRealize parent_realize;
DeviceReset parent_reset;
void (*reject)(ICSState *s, uint32_t irq);
void (*resend)(ICSState *s);
};
struct ICSState {
/*< private >*/
DeviceState parent_obj;
/*< public >*/
uint32_t nr_irqs;
uint32_t offset;
ICSIRQState *irqs;
XICSFabric *xics;
};
#define ICS_PROP_XICS "xics"
static inline bool ics_valid_irq(ICSState *ics, uint32_t nr)
{
return (nr >= ics->offset) && (nr < (ics->offset + ics->nr_irqs));
}
struct ICSIRQState {
uint32_t server;
uint8_t priority;
uint8_t saved_priority;
#define XICS_STATUS_ASSERTED 0x1
#define XICS_STATUS_SENT 0x2
#define XICS_STATUS_REJECTED 0x4
#define XICS_STATUS_MASKED_PENDING 0x8
#define XICS_STATUS_PRESENTED 0x10
#define XICS_STATUS_QUEUED 0x20
uint8_t status;
/* (flags & XICS_FLAGS_IRQ_MASK) == 0 means the interrupt is not allocated */
#define XICS_FLAGS_IRQ_LSI 0x1
#define XICS_FLAGS_IRQ_MSI 0x2
#define XICS_FLAGS_IRQ_MASK 0x3
uint8_t flags;
};
#define TYPE_XICS_FABRIC "xics-fabric"
#define XICS_FABRIC(obj) \
INTERFACE_CHECK(XICSFabric, (obj), TYPE_XICS_FABRIC)
typedef struct XICSFabricClass XICSFabricClass;
DECLARE_CLASS_CHECKERS(XICSFabricClass, XICS_FABRIC,
TYPE_XICS_FABRIC)
struct XICSFabricClass {
InterfaceClass parent;
ICSState *(*ics_get)(XICSFabric *xi, int irq);
void (*ics_resend)(XICSFabric *xi);
ICPState *(*icp_get)(XICSFabric *xi, int server);
};
ICPState *xics_icp_get(XICSFabric *xi, int server);
/* Internal XICS interfaces */
void icp_set_cppr(ICPState *icp, uint8_t cppr);
void icp_set_mfrr(ICPState *icp, uint8_t mfrr);
uint32_t icp_accept(ICPState *ss);
uint32_t icp_ipoll(ICPState *ss, uint32_t *mfrr);
void icp_eoi(ICPState *icp, uint32_t xirr);
void icp_irq(ICSState *ics, int server, int nr, uint8_t priority);
void icp_reset(ICPState *icp);
void ics_write_xive(ICSState *ics, int nr, int server,
uint8_t priority, uint8_t saved_priority);
void ics_set_irq(void *opaque, int srcno, int val);
static inline bool ics_irq_free(ICSState *ics, uint32_t srcno)
{
return !(ics->irqs[srcno].flags & XICS_FLAGS_IRQ_MASK);
}
void ics_set_irq_type(ICSState *ics, int srcno, bool lsi);
void icp_pic_print_info(ICPState *icp, Monitor *mon);
void ics_pic_print_info(ICSState *ics, Monitor *mon);
void ics_resend(ICSState *ics);
void icp_resend(ICPState *ss);
Object *icp_create(Object *cpu, const char *type, XICSFabric *xi,
Error **errp);
void icp_destroy(ICPState *icp);
/* KVM */
void icp_get_kvm_state(ICPState *icp);
int icp_set_kvm_state(ICPState *icp, Error **errp);
void icp_synchronize_state(ICPState *icp);
void icp_kvm_realize(DeviceState *dev, Error **errp);
void ics_get_kvm_state(ICSState *ics);
int ics_set_kvm_state_one(ICSState *ics, int srcno, Error **errp);
int ics_set_kvm_state(ICSState *ics, Error **errp);
void ics_synchronize_state(ICSState *ics);
void ics_kvm_set_irq(ICSState *ics, int srcno, int val);
#endif /* XICS_H */
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