1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * LoongArch 3A5000 ext interrupt controller definitions
4  *
5  * Copyright (C) 2021 Loongson Technology Corporation Limited
6  */
7 
8 #include "hw/sysbus.h"
9 #include "hw/loongarch/virt.h"
10 
11 #ifndef LOONGARCH_EXTIOI_H
12 #define LOONGARCH_EXTIOI_H
13 
14 #define LS3A_INTC_IP               8
15 #define EXTIOI_IRQS                (256)
16 #define EXTIOI_IRQS_BITMAP_SIZE    (256 / 8)
17 /* irq from EXTIOI is routed to no more than 4 cpus */
18 #define EXTIOI_CPUS                (4)
19 /* map to ipnum per 32 irqs */
20 #define EXTIOI_IRQS_IPMAP_SIZE     (256 / 32)
21 #define EXTIOI_IRQS_COREMAP_SIZE   256
22 #define EXTIOI_IRQS_NODETYPE_COUNT  16
23 #define EXTIOI_IRQS_GROUP_COUNT    8
24 
25 #define APIC_OFFSET                  0x400
26 #define APIC_BASE                    (0x1000ULL + APIC_OFFSET)
27 
28 #define EXTIOI_NODETYPE_START        (0x4a0 - APIC_OFFSET)
29 #define EXTIOI_NODETYPE_END          (0x4c0 - APIC_OFFSET)
30 #define EXTIOI_IPMAP_START           (0x4c0 - APIC_OFFSET)
31 #define EXTIOI_IPMAP_END             (0x4c8 - APIC_OFFSET)
32 #define EXTIOI_ENABLE_START          (0x600 - APIC_OFFSET)
33 #define EXTIOI_ENABLE_END            (0x620 - APIC_OFFSET)
34 #define EXTIOI_BOUNCE_START          (0x680 - APIC_OFFSET)
35 #define EXTIOI_BOUNCE_END            (0x6a0 - APIC_OFFSET)
36 #define EXTIOI_ISR_START             (0x700 - APIC_OFFSET)
37 #define EXTIOI_ISR_END               (0x720 - APIC_OFFSET)
38 #define EXTIOI_COREISR_START         (0x800 - APIC_OFFSET)
39 #define EXTIOI_COREISR_END           (0xB20 - APIC_OFFSET)
40 #define EXTIOI_COREMAP_START         (0xC00 - APIC_OFFSET)
41 #define EXTIOI_COREMAP_END           (0xD00 - APIC_OFFSET)
42 
43 typedef struct ExtIOICore {
44     uint32_t coreisr[EXTIOI_IRQS_GROUP_COUNT];
45     DECLARE_BITMAP(sw_isr[LS3A_INTC_IP], EXTIOI_IRQS);
46     qemu_irq parent_irq[LS3A_INTC_IP];
47 } ExtIOICore;
48 
49 #define TYPE_LOONGARCH_EXTIOI "loongarch.extioi"
50 OBJECT_DECLARE_SIMPLE_TYPE(LoongArchExtIOI, LOONGARCH_EXTIOI)
51 struct LoongArchExtIOI {
52     SysBusDevice parent_obj;
53     uint32_t num_cpu;
54     /* hardware state */
55     uint32_t nodetype[EXTIOI_IRQS_NODETYPE_COUNT / 2];
56     uint32_t bounce[EXTIOI_IRQS_GROUP_COUNT];
57     uint32_t isr[EXTIOI_IRQS / 32];
58     uint32_t enable[EXTIOI_IRQS / 32];
59     uint32_t ipmap[EXTIOI_IRQS_IPMAP_SIZE / 4];
60     uint32_t coremap[EXTIOI_IRQS / 4];
61     uint32_t sw_pending[EXTIOI_IRQS / 32];
62     uint8_t  sw_ipmap[EXTIOI_IRQS_IPMAP_SIZE];
63     uint8_t  sw_coremap[EXTIOI_IRQS];
64     qemu_irq irq[EXTIOI_IRQS];
65     ExtIOICore *cpu;
66     MemoryRegion extioi_system_mem;
67 };
68 #endif /* LOONGARCH_EXTIOI_H */
69