tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2024 Loongson Technology Corporation Limited
4 */
5
6#ifndef __ASM_KVM_PCH_PIC_H
7#define __ASM_KVM_PCH_PIC_H
8
9#include <kvm/iodev.h>
10
11#define PCH_PIC_SIZE 0x3e8
12
13#define PCH_PIC_INT_ID_START 0x0
14#define PCH_PIC_INT_ID_END 0x7
15#define PCH_PIC_MASK_START 0x20
16#define PCH_PIC_MASK_END 0x27
17#define PCH_PIC_HTMSI_EN_START 0x40
18#define PCH_PIC_HTMSI_EN_END 0x47
19#define PCH_PIC_EDGE_START 0x60
20#define PCH_PIC_EDGE_END 0x67
21#define PCH_PIC_CLEAR_START 0x80
22#define PCH_PIC_CLEAR_END 0x87
23#define PCH_PIC_AUTO_CTRL0_START 0xc0
24#define PCH_PIC_AUTO_CTRL0_END 0xc7
25#define PCH_PIC_AUTO_CTRL1_START 0xe0
26#define PCH_PIC_AUTO_CTRL1_END 0xe7
27#define PCH_PIC_ROUTE_ENTRY_START 0x100
28#define PCH_PIC_ROUTE_ENTRY_END 0x13f
29#define PCH_PIC_HTMSI_VEC_START 0x200
30#define PCH_PIC_HTMSI_VEC_END 0x23f
31#define PCH_PIC_INT_IRR_START 0x380
32#define PCH_PIC_INT_IRR_END 0x38f
33#define PCH_PIC_INT_ISR_START 0x3a0
34#define PCH_PIC_INT_ISR_END 0x3af
35#define PCH_PIC_POLARITY_START 0x3e0
36#define PCH_PIC_POLARITY_END 0x3e7
37#define PCH_PIC_INT_ID_VAL 0x7000000UL
38#define PCH_PIC_INT_ID_VER 0x1UL
39
40struct loongarch_pch_pic {
41 spinlock_t lock;
42 struct kvm *kvm;
43 struct kvm_io_device device;
44 uint64_t mask; /* 1:disable irq, 0:enable irq */
45 uint64_t htmsi_en; /* 1:msi */
46 uint64_t edge; /* 1:edge triggered, 0:level triggered */
47 uint64_t auto_ctrl0; /* only use default value 00b */
48 uint64_t auto_ctrl1; /* only use default value 00b */
49 uint64_t last_intirr; /* edge detection */
50 uint64_t irr; /* interrupt request register */
51 uint64_t isr; /* interrupt service register */
52 uint64_t polarity; /* 0: high level trigger, 1: low level trigger */
53 uint8_t route_entry[64]; /* default value 0, route to int0: eiointc */
54 uint8_t htmsi_vector[64]; /* irq route table for routing to eiointc */
55 uint64_t pch_pic_base;
56};
57
58int kvm_loongarch_register_pch_pic_device(void);
59void pch_pic_set_irq(struct loongarch_pch_pic *s, int irq, int level);
60void pch_msi_set_irq(struct kvm *kvm, int irq, int level);
61
62#endif /* __ASM_KVM_PCH_PIC_H */