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 #include "qom/object.h"
27 
28 #define ITS_CONTROL_SIZE 0x10000
29 #define ITS_TRANS_SIZE   0x10000
30 #define ITS_SIZE         (ITS_CONTROL_SIZE + ITS_TRANS_SIZE)
31 
32 #define GITS_CTLR        0x0
33 #define GITS_IIDR        0x4
34 #define GITS_CBASER      0x80
35 #define GITS_CWRITER     0x88
36 #define GITS_CREADR      0x90
37 #define GITS_BASER       0x100
38 
39 struct GICv3ITSState {
40     SysBusDevice parent_obj;
41 
42     MemoryRegion iomem_main;
43     MemoryRegion iomem_its_cntrl;
44     MemoryRegion iomem_its_translation;
45 
46     GICv3State *gicv3;
47 
48     int dev_fd; /* kvm device fd if backed by kvm vgic support */
49     uint64_t gits_translater_gpa;
50     bool translater_gpa_known;
51 
52     /* Registers */
53     uint32_t ctlr;
54     uint32_t iidr;
55     uint64_t cbaser;
56     uint64_t cwriter;
57     uint64_t creadr;
58     uint64_t baser[8];
59 
60     Error *migration_blocker;
61 };
62 
63 typedef struct GICv3ITSState GICv3ITSState;
64 
65 void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops);
66 
67 #define TYPE_ARM_GICV3_ITS_COMMON "arm-gicv3-its-common"
68 typedef struct GICv3ITSCommonClass GICv3ITSCommonClass;
69 DECLARE_OBJ_CHECKERS(GICv3ITSState, GICv3ITSCommonClass,
70                      ARM_GICV3_ITS_COMMON, TYPE_ARM_GICV3_ITS_COMMON)
71 
72 struct GICv3ITSCommonClass {
73     /*< private >*/
74     SysBusDeviceClass parent_class;
75     /*< public >*/
76 
77     int (*send_msi)(GICv3ITSState *s, uint32_t data, uint16_t devid);
78     void (*pre_save)(GICv3ITSState *s);
79     void (*post_load)(GICv3ITSState *s);
80 };
81 
82 
83 #endif
84