Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2
3#ifndef SELFTEST_KVM_PROCESSOR_H
4#define SELFTEST_KVM_PROCESSOR_H
5
6#ifndef __ASSEMBLER__
7#include "ucall_common.h"
8
9#else
10/* general registers */
11#define zero $r0
12#define ra $r1
13#define tp $r2
14#define sp $r3
15#define a0 $r4
16#define a1 $r5
17#define a2 $r6
18#define a3 $r7
19#define a4 $r8
20#define a5 $r9
21#define a6 $r10
22#define a7 $r11
23#define t0 $r12
24#define t1 $r13
25#define t2 $r14
26#define t3 $r15
27#define t4 $r16
28#define t5 $r17
29#define t6 $r18
30#define t7 $r19
31#define t8 $r20
32#define u0 $r21
33#define fp $r22
34#define s0 $r23
35#define s1 $r24
36#define s2 $r25
37#define s3 $r26
38#define s4 $r27
39#define s5 $r28
40#define s6 $r29
41#define s7 $r30
42#define s8 $r31
43#endif
44
45/*
46 * LoongArch page table entry definition
47 * Original header file arch/loongarch/include/asm/loongarch.h
48 */
49#define _PAGE_VALID_SHIFT 0
50#define _PAGE_DIRTY_SHIFT 1
51#define _PAGE_PLV_SHIFT 2 /* 2~3, two bits */
52#define PLV_KERN 0
53#define PLV_USER 3
54#define PLV_MASK 0x3
55#define _CACHE_SHIFT 4 /* 4~5, two bits */
56#define _PAGE_PRESENT_SHIFT 7
57#define _PAGE_WRITE_SHIFT 8
58
59#define _PAGE_VALID BIT_ULL(_PAGE_VALID_SHIFT)
60#define _PAGE_PRESENT BIT_ULL(_PAGE_PRESENT_SHIFT)
61#define _PAGE_WRITE BIT_ULL(_PAGE_WRITE_SHIFT)
62#define _PAGE_DIRTY BIT_ULL(_PAGE_DIRTY_SHIFT)
63#define _PAGE_USER (PLV_USER << _PAGE_PLV_SHIFT)
64#define __READABLE (_PAGE_VALID)
65#define __WRITEABLE (_PAGE_DIRTY | _PAGE_WRITE)
66/* Coherent Cached */
67#define _CACHE_CC BIT_ULL(_CACHE_SHIFT)
68#define PS_4K 0x0000000c
69#define PS_16K 0x0000000e
70#define PS_64K 0x00000010
71#define PS_DEFAULT_SIZE PS_16K
72
73/* LoongArch Basic CSR registers */
74#define LOONGARCH_CSR_CRMD 0x0 /* Current mode info */
75#define CSR_CRMD_PG_SHIFT 4
76#define CSR_CRMD_PG BIT_ULL(CSR_CRMD_PG_SHIFT)
77#define CSR_CRMD_IE_SHIFT 2
78#define CSR_CRMD_IE BIT_ULL(CSR_CRMD_IE_SHIFT)
79#define CSR_CRMD_PLV_SHIFT 0
80#define CSR_CRMD_PLV_WIDTH 2
81#define CSR_CRMD_PLV (0x3UL << CSR_CRMD_PLV_SHIFT)
82#define PLV_MASK 0x3
83#define LOONGARCH_CSR_PRMD 0x1
84#define LOONGARCH_CSR_EUEN 0x2
85#define LOONGARCH_CSR_ECFG 0x4
86#define LOONGARCH_CSR_ESTAT 0x5 /* Exception status */
87#define LOONGARCH_CSR_ERA 0x6 /* ERA */
88#define LOONGARCH_CSR_BADV 0x7 /* Bad virtual address */
89#define LOONGARCH_CSR_EENTRY 0xc
90#define LOONGARCH_CSR_TLBIDX 0x10 /* TLB Index, EHINV, PageSize */
91#define CSR_TLBIDX_PS_SHIFT 24
92#define CSR_TLBIDX_PS_WIDTH 6
93#define CSR_TLBIDX_PS (0x3fUL << CSR_TLBIDX_PS_SHIFT)
94#define CSR_TLBIDX_SIZEM 0x3f000000
95#define CSR_TLBIDX_SIZE CSR_TLBIDX_PS_SHIFT
96#define LOONGARCH_CSR_ASID 0x18 /* ASID */
97#define LOONGARCH_CSR_PGDL 0x19
98#define LOONGARCH_CSR_PGDH 0x1a
99/* Page table base */
100#define LOONGARCH_CSR_PGD 0x1b
101#define LOONGARCH_CSR_PWCTL0 0x1c
102#define LOONGARCH_CSR_PWCTL1 0x1d
103#define LOONGARCH_CSR_STLBPGSIZE 0x1e
104#define LOONGARCH_CSR_CPUID 0x20
105#define LOONGARCH_CSR_KS0 0x30
106#define LOONGARCH_CSR_KS1 0x31
107#define LOONGARCH_CSR_TMID 0x40
108#define LOONGARCH_CSR_TCFG 0x41
109/* TLB refill exception entry */
110#define LOONGARCH_CSR_TLBRENTRY 0x88
111#define LOONGARCH_CSR_TLBRSAVE 0x8b
112#define LOONGARCH_CSR_TLBREHI 0x8e
113#define CSR_TLBREHI_PS_SHIFT 0
114#define CSR_TLBREHI_PS (0x3fUL << CSR_TLBREHI_PS_SHIFT)
115
116#define EXREGS_GPRS (32)
117
118#ifndef __ASSEMBLER__
119void handle_tlb_refill(void);
120void handle_exception(void);
121
122struct ex_regs {
123 unsigned long regs[EXREGS_GPRS];
124 unsigned long pc;
125 unsigned long estat;
126 unsigned long badv;
127};
128
129#define PC_OFFSET_EXREGS offsetof(struct ex_regs, pc)
130#define ESTAT_OFFSET_EXREGS offsetof(struct ex_regs, estat)
131#define BADV_OFFSET_EXREGS offsetof(struct ex_regs, badv)
132#define EXREGS_SIZE sizeof(struct ex_regs)
133
134#else
135#define PC_OFFSET_EXREGS ((EXREGS_GPRS + 0) * 8)
136#define ESTAT_OFFSET_EXREGS ((EXREGS_GPRS + 1) * 8)
137#define BADV_OFFSET_EXREGS ((EXREGS_GPRS + 2) * 8)
138#define EXREGS_SIZE ((EXREGS_GPRS + 3) * 8)
139#endif
140
141#endif /* SELFTEST_KVM_PROCESSOR_H */