1 /*
2  * ITS support for ARM GICv3
3  *
4  * Copyright (c) 2015 Samsung Electronics Co., Ltd.
5  * Written by Pavel Fedin
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation, either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, see <http://www.gnu.org/licenses/>.
19  */
20 
21 #ifndef QEMU_ARM_GICV3_ITS_COMMON_H
22 #define QEMU_ARM_GICV3_ITS_COMMON_H
23 
24 #include "hw/sysbus.h"
25 #include "hw/intc/arm_gicv3_common.h"
26 
27 #define ITS_CONTROL_SIZE 0x10000
28 #define ITS_TRANS_SIZE   0x10000
29 #define ITS_SIZE         (ITS_CONTROL_SIZE + ITS_TRANS_SIZE)
30 
31 #define GITS_CTLR        0x0
32 #define GITS_IIDR        0x4
33 #define GITS_CBASER      0x80
34 #define GITS_CWRITER     0x88
35 #define GITS_CREADR      0x90
36 #define GITS_BASER       0x100
37 
38 struct GICv3ITSState {
39     SysBusDevice parent_obj;
40 
41     MemoryRegion iomem_main;
42     MemoryRegion iomem_its_cntrl;
43     MemoryRegion iomem_its_translation;
44 
45     GICv3State *gicv3;
46 
47     int dev_fd; /* kvm device fd if backed by kvm vgic support */
48     uint64_t gits_translater_gpa;
49     bool translater_gpa_known;
50 
51     /* Registers */
52     uint32_t ctlr;
53     uint32_t iidr;
54     uint64_t cbaser;
55     uint64_t cwriter;
56     uint64_t creadr;
57     uint64_t baser[8];
58 
59     Error *migration_blocker;
60 };
61 
62 typedef struct GICv3ITSState GICv3ITSState;
63 
64 void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops);
65 
66 #define TYPE_ARM_GICV3_ITS_COMMON "arm-gicv3-its-common"
67 #define ARM_GICV3_ITS_COMMON(obj) \
68      OBJECT_CHECK(GICv3ITSState, (obj), TYPE_ARM_GICV3_ITS_COMMON)
69 #define ARM_GICV3_ITS_COMMON_CLASS(klass) \
70      OBJECT_CLASS_CHECK(GICv3ITSCommonClass, (klass), TYPE_ARM_GICV3_ITS_COMMON)
71 #define ARM_GICV3_ITS_COMMON_GET_CLASS(obj) \
72      OBJECT_GET_CLASS(GICv3ITSCommonClass, (obj), TYPE_ARM_GICV3_ITS_COMMON)
73 
74 struct GICv3ITSCommonClass {
75     /*< private >*/
76     SysBusDeviceClass parent_class;
77     /*< public >*/
78 
79     int (*send_msi)(GICv3ITSState *s, uint32_t data, uint16_t devid);
80     void (*pre_save)(GICv3ITSState *s);
81     void (*post_load)(GICv3ITSState *s);
82 };
83 
84 typedef struct GICv3ITSCommonClass GICv3ITSCommonClass;
85 
86 #endif
87