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/*
* ITS support for ARM GICv3
*
* Copyright (c) 2015 Samsung Electronics Co., Ltd.
* Written by Pavel Fedin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef QEMU_ARM_GICV3_ITS_COMMON_H
#define QEMU_ARM_GICV3_ITS_COMMON_H
#include "hw/sysbus.h"
#include "hw/intc/arm_gicv3_common.h"
#include "qom/object.h"
#define TYPE_ARM_GICV3_ITS "arm-gicv3-its"
#define ITS_CONTROL_SIZE 0x10000
#define ITS_TRANS_SIZE 0x10000
#define ITS_SIZE (ITS_CONTROL_SIZE + ITS_TRANS_SIZE)
#define GITS_CTLR 0x0
#define GITS_IIDR 0x4
#define GITS_TYPER 0x8
#define GITS_CBASER 0x80
#define GITS_CWRITER 0x88
#define GITS_CREADR 0x90
#define GITS_BASER 0x100
#define GITS_TRANSLATER 0x0040
typedef struct {
bool indirect;
uint16_t entry_sz;
uint32_t page_sz;
uint32_t num_entries;
uint64_t base_addr;
} TableDesc;
typedef struct {
uint32_t num_entries;
uint64_t base_addr;
} CmdQDesc;
struct GICv3ITSState {
SysBusDevice parent_obj;
MemoryRegion iomem_main;
MemoryRegion iomem_its_cntrl;
MemoryRegion iomem_its_translation;
GICv3State *gicv3;
int dev_fd; /* kvm device fd if backed by kvm vgic support */
uint64_t gits_translater_gpa;
bool translater_gpa_known;
/* Registers */
uint32_t ctlr;
uint32_t iidr;
uint64_t typer;
uint64_t cbaser;
uint64_t cwriter;
uint64_t creadr;
uint64_t baser[8];
TableDesc dt;
TableDesc ct;
TableDesc vpet;
CmdQDesc cq;
Error *migration_blocker;
};
typedef struct GICv3ITSState GICv3ITSState;
void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops,
const MemoryRegionOps *tops);
/*
* The ITS should call this when it is realized to add itself
* to its GIC's list of connected ITSes.
*/
static inline void gicv3_add_its(GICv3State *s, DeviceState *its)
{
g_ptr_array_add(s->itslist, its);
}
/*
* The ITS can use this for operations that must be performed on
* every ITS connected to the same GIC that it is
*/
static inline void gicv3_foreach_its(GICv3State *s, GFunc func, void *opaque)
{
g_ptr_array_foreach(s->itslist, func, opaque);
}
#define TYPE_ARM_GICV3_ITS_COMMON "arm-gicv3-its-common"
typedef struct GICv3ITSCommonClass GICv3ITSCommonClass;
DECLARE_OBJ_CHECKERS(GICv3ITSState, GICv3ITSCommonClass,
ARM_GICV3_ITS_COMMON, TYPE_ARM_GICV3_ITS_COMMON)
struct GICv3ITSCommonClass {
/*< private >*/
SysBusDeviceClass parent_class;
/*< public >*/
int (*send_msi)(GICv3ITSState *s, uint32_t data, uint16_t devid);
void (*pre_save)(GICv3ITSState *s);
void (*post_load)(GICv3ITSState *s);
};
/**
* its_class_name:
*
* Return the ITS class name to use depending on whether KVM acceleration
* and KVM CAP_SIGNAL_MSI are supported
*
* Returns: class name to use or NULL
*/
const char *its_class_name(void);
#endif
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