qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
Log | Files | Refs | Submodules | LICENSE

arm_gicv3_its_common.h (3306B)

      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 TYPE_ARM_GICV3_ITS "arm-gicv3-its"
     29 
     30 #define ITS_CONTROL_SIZE 0x10000
     31 #define ITS_TRANS_SIZE   0x10000
     32 #define ITS_SIZE         (ITS_CONTROL_SIZE + ITS_TRANS_SIZE)
     33 
     34 #define GITS_CTLR        0x0
     35 #define GITS_IIDR        0x4
     36 #define GITS_TYPER       0x8
     37 #define GITS_CBASER      0x80
     38 #define GITS_CWRITER     0x88
     39 #define GITS_CREADR      0x90
     40 #define GITS_BASER       0x100
     41 
     42 #define GITS_TRANSLATER  0x0040
     43 
     44 typedef struct {
     45     bool indirect;
     46     uint16_t entry_sz;
     47     uint32_t page_sz;
     48     uint32_t num_entries;
     49     uint64_t base_addr;
     50 } TableDesc;
     51 
     52 typedef struct {
     53     uint32_t num_entries;
     54     uint64_t base_addr;
     55 } CmdQDesc;
     56 
     57 struct GICv3ITSState {
     58     SysBusDevice parent_obj;
     59 
     60     MemoryRegion iomem_main;
     61     MemoryRegion iomem_its_cntrl;
     62     MemoryRegion iomem_its_translation;
     63 
     64     GICv3State *gicv3;
     65 
     66     int dev_fd; /* kvm device fd if backed by kvm vgic support */
     67     uint64_t gits_translater_gpa;
     68     bool translater_gpa_known;
     69 
     70     /* Registers */
     71     uint32_t ctlr;
     72     uint32_t iidr;
     73     uint64_t typer;
     74     uint64_t cbaser;
     75     uint64_t cwriter;
     76     uint64_t creadr;
     77     uint64_t baser[8];
     78 
     79     TableDesc  dt;
     80     TableDesc  ct;
     81     TableDesc  vpet;
     82     CmdQDesc   cq;
     83 
     84     Error *migration_blocker;
     85 };
     86 
     87 typedef struct GICv3ITSState GICv3ITSState;
     88 
     89 void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops,
     90                    const MemoryRegionOps *tops);
     91 
     92 /*
     93  * The ITS should call this when it is realized to add itself
     94  * to its GIC's list of connected ITSes.
     95  */
     96 static inline void gicv3_add_its(GICv3State *s, DeviceState *its)
     97 {
     98     g_ptr_array_add(s->itslist, its);
     99 }
    100 
    101 /*
    102  * The ITS can use this for operations that must be performed on
    103  * every ITS connected to the same GIC that it is
    104  */
    105 static inline void gicv3_foreach_its(GICv3State *s, GFunc func, void *opaque)
    106 {
    107     g_ptr_array_foreach(s->itslist, func, opaque);
    108 }
    109 
    110 #define TYPE_ARM_GICV3_ITS_COMMON "arm-gicv3-its-common"
    111 typedef struct GICv3ITSCommonClass GICv3ITSCommonClass;
    112 DECLARE_OBJ_CHECKERS(GICv3ITSState, GICv3ITSCommonClass,
    113                      ARM_GICV3_ITS_COMMON, TYPE_ARM_GICV3_ITS_COMMON)
    114 
    115 struct GICv3ITSCommonClass {
    116     /*< private >*/
    117     SysBusDeviceClass parent_class;
    118     /*< public >*/
    119 
    120     int (*send_msi)(GICv3ITSState *s, uint32_t data, uint16_t devid);
    121     void (*pre_save)(GICv3ITSState *s);
    122     void (*post_load)(GICv3ITSState *s);
    123 };
    124 
    125 
    126 #endif