1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* LoongArch EXTIOI interrupt kvm support
*
* Copyright (C) 2025 Loongson Technology Corporation Limited
*/
#include "qemu/osdep.h"
#include "hw/intc/loongarch_extioi.h"
#include "linux/kvm.h"
#include "qapi/error.h"
#include "system/kvm.h"
static void kvm_extioi_access_reg(int fd, uint64_t addr, void *val, bool write)
{
kvm_device_access(fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_REGS,
addr, val, write, &error_abort);
}
static void kvm_extioi_access_sw_state(int fd, uint64_t addr,
void *val, bool write)
{
kvm_device_access(fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_SW_STATUS,
addr, val, write, &error_abort);
}
static void kvm_extioi_access_sw_status(void *opaque, bool write)
{
LoongArchExtIOICommonState *lecs = LOONGARCH_EXTIOI_COMMON(opaque);
LoongArchExtIOIState *les = LOONGARCH_EXTIOI(opaque);
int addr;
addr = KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_STATE;
kvm_extioi_access_sw_state(les->dev_fd, addr, &lecs->status, write);
}
static void kvm_extioi_access_regs(void *opaque, bool write)
{
LoongArchExtIOICommonState *lecs = LOONGARCH_EXTIOI_COMMON(opaque);
LoongArchExtIOIState *les = LOONGARCH_EXTIOI(opaque);
int fd = les->dev_fd;
int addr, offset, cpu;
for (addr = EXTIOI_NODETYPE_START; addr < EXTIOI_NODETYPE_END; addr += 4) {
offset = (addr - EXTIOI_NODETYPE_START) / 4;
kvm_extioi_access_reg(fd, addr, &lecs->nodetype[offset], write);
}
for (addr = EXTIOI_IPMAP_START; addr < EXTIOI_IPMAP_END; addr += 4) {
offset = (addr - EXTIOI_IPMAP_START) / 4;
kvm_extioi_access_reg(fd, addr, &lecs->ipmap[offset], write);
}
for (addr = EXTIOI_ENABLE_START; addr < EXTIOI_ENABLE_END; addr += 4) {
offset = (addr - EXTIOI_ENABLE_START) / 4;
kvm_extioi_access_reg(fd, addr, &lecs->enable[offset], write);
}
for (addr = EXTIOI_BOUNCE_START; addr < EXTIOI_BOUNCE_END; addr += 4) {
offset = (addr - EXTIOI_BOUNCE_START) / 4;
kvm_extioi_access_reg(fd, addr, &lecs->bounce[offset], write);
}
for (addr = EXTIOI_ISR_START; addr < EXTIOI_ISR_END; addr += 4) {
offset = (addr - EXTIOI_ISR_START) / 4;
kvm_extioi_access_reg(fd, addr, &lecs->isr[offset], write);
}
for (addr = EXTIOI_COREMAP_START; addr < EXTIOI_COREMAP_END; addr += 4) {
offset = (addr - EXTIOI_COREMAP_START) / 4;
kvm_extioi_access_reg(fd, addr, &lecs->coremap[offset], write);
}
for (cpu = 0; cpu < lecs->num_cpu; cpu++) {
for (addr = EXTIOI_COREISR_START;
addr < EXTIOI_COREISR_END; addr += 4) {
offset = (addr - EXTIOI_COREISR_START) / 4;
kvm_extioi_access_reg(fd, (cpu << 16) | addr,
&lecs->cpu[cpu].coreisr[offset], write);
}
}
}
int kvm_extioi_get(void *opaque)
{
kvm_extioi_access_regs(opaque, false);
kvm_extioi_access_sw_status(opaque, false);
return 0;
}
int kvm_extioi_put(void *opaque, int version_id)
{
LoongArchExtIOIState *les = LOONGARCH_EXTIOI(opaque);
int fd = les->dev_fd;
if (fd == 0) {
return 0;
}
kvm_extioi_access_regs(opaque, true);
kvm_extioi_access_sw_status(opaque, true);
kvm_device_access(fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL,
KVM_DEV_LOONGARCH_EXTIOI_CTRL_LOAD_FINISHED,
NULL, true, &error_abort);
return 0;
}
void kvm_extioi_realize(DeviceState *dev, Error **errp)
{
LoongArchExtIOICommonState *lecs = LOONGARCH_EXTIOI_COMMON(dev);
LoongArchExtIOIState *les = LOONGARCH_EXTIOI(dev);
int ret;
ret = kvm_create_device(kvm_state, KVM_DEV_TYPE_LOONGARCH_EIOINTC, false);
if (ret < 0) {
fprintf(stderr, "create KVM_LOONGARCH_EIOINTC failed: %s\n",
strerror(-ret));
abort();
}
les->dev_fd = ret;
ret = kvm_device_access(les->dev_fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL,
KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_NUM_CPU,
&lecs->num_cpu, true, NULL);
if (ret < 0) {
fprintf(stderr, "KVM_LOONGARCH_EXTIOI_INIT_NUM_CPU failed: %s\n",
strerror(-ret));
abort();
}
ret = kvm_device_access(les->dev_fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL,
KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_FEATURE,
&lecs->features, true, NULL);
if (ret < 0) {
fprintf(stderr, "KVM_LOONGARCH_EXTIOI_INIT_FEATURE failed: %s\n",
strerror(-ret));
abort();
}
}
|
