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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 */
2/*
3 * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
4 */
5
6#ifndef __ASM_LOONGARCH_KVM_CSR_H__
7#define __ASM_LOONGARCH_KVM_CSR_H__
8
9#include <linux/uaccess.h>
10#include <linux/kvm_host.h>
11#include <asm/loongarch.h>
12#include <asm/kvm_vcpu.h>
13
14#define gcsr_read(csr) \
15({ \
16 register unsigned long __v; \
17 __asm__ __volatile__( \
18 " gcsrrd %[val], %[reg]\n\t" \
19 : [val] "=r" (__v) \
20 : [reg] "i" (csr) \
21 : "memory"); \
22 __v; \
23})
24
25#define gcsr_write(v, csr) \
26({ \
27 register unsigned long __v = v; \
28 __asm__ __volatile__ ( \
29 " gcsrwr %[val], %[reg]\n\t" \
30 : [val] "+r" (__v) \
31 : [reg] "i" (csr) \
32 : "memory"); \
33 __v; \
34})
35
36#define gcsr_xchg(v, m, csr) \
37({ \
38 register unsigned long __v = v; \
39 __asm__ __volatile__( \
40 " gcsrxchg %[val], %[mask], %[reg]\n\t" \
41 : [val] "+r" (__v) \
42 : [mask] "r" (m), [reg] "i" (csr) \
43 : "memory"); \
44 __v; \
45})
46
47/* Guest CSRS read and write */
48#define read_gcsr_crmd() gcsr_read(LOONGARCH_CSR_CRMD)
49#define write_gcsr_crmd(val) gcsr_write(val, LOONGARCH_CSR_CRMD)
50#define read_gcsr_prmd() gcsr_read(LOONGARCH_CSR_PRMD)
51#define write_gcsr_prmd(val) gcsr_write(val, LOONGARCH_CSR_PRMD)
52#define read_gcsr_euen() gcsr_read(LOONGARCH_CSR_EUEN)
53#define write_gcsr_euen(val) gcsr_write(val, LOONGARCH_CSR_EUEN)
54#define read_gcsr_misc() gcsr_read(LOONGARCH_CSR_MISC)
55#define write_gcsr_misc(val) gcsr_write(val, LOONGARCH_CSR_MISC)
56#define read_gcsr_ecfg() gcsr_read(LOONGARCH_CSR_ECFG)
57#define write_gcsr_ecfg(val) gcsr_write(val, LOONGARCH_CSR_ECFG)
58#define read_gcsr_estat() gcsr_read(LOONGARCH_CSR_ESTAT)
59#define write_gcsr_estat(val) gcsr_write(val, LOONGARCH_CSR_ESTAT)
60#define read_gcsr_era() gcsr_read(LOONGARCH_CSR_ERA)
61#define write_gcsr_era(val) gcsr_write(val, LOONGARCH_CSR_ERA)
62#define read_gcsr_badv() gcsr_read(LOONGARCH_CSR_BADV)
63#define write_gcsr_badv(val) gcsr_write(val, LOONGARCH_CSR_BADV)
64#define read_gcsr_badi() gcsr_read(LOONGARCH_CSR_BADI)
65#define write_gcsr_badi(val) gcsr_write(val, LOONGARCH_CSR_BADI)
66#define read_gcsr_eentry() gcsr_read(LOONGARCH_CSR_EENTRY)
67#define write_gcsr_eentry(val) gcsr_write(val, LOONGARCH_CSR_EENTRY)
68
69#define read_gcsr_asid() gcsr_read(LOONGARCH_CSR_ASID)
70#define write_gcsr_asid(val) gcsr_write(val, LOONGARCH_CSR_ASID)
71#define read_gcsr_pgdl() gcsr_read(LOONGARCH_CSR_PGDL)
72#define write_gcsr_pgdl(val) gcsr_write(val, LOONGARCH_CSR_PGDL)
73#define read_gcsr_pgdh() gcsr_read(LOONGARCH_CSR_PGDH)
74#define write_gcsr_pgdh(val) gcsr_write(val, LOONGARCH_CSR_PGDH)
75#define write_gcsr_pgd(val) gcsr_write(val, LOONGARCH_CSR_PGD)
76#define read_gcsr_pgd() gcsr_read(LOONGARCH_CSR_PGD)
77#define read_gcsr_pwctl0() gcsr_read(LOONGARCH_CSR_PWCTL0)
78#define write_gcsr_pwctl0(val) gcsr_write(val, LOONGARCH_CSR_PWCTL0)
79#define read_gcsr_pwctl1() gcsr_read(LOONGARCH_CSR_PWCTL1)
80#define write_gcsr_pwctl1(val) gcsr_write(val, LOONGARCH_CSR_PWCTL1)
81#define read_gcsr_stlbpgsize() gcsr_read(LOONGARCH_CSR_STLBPGSIZE)
82#define write_gcsr_stlbpgsize(val) gcsr_write(val, LOONGARCH_CSR_STLBPGSIZE)
83#define read_gcsr_rvacfg() gcsr_read(LOONGARCH_CSR_RVACFG)
84#define write_gcsr_rvacfg(val) gcsr_write(val, LOONGARCH_CSR_RVACFG)
85
86#define read_gcsr_cpuid() gcsr_read(LOONGARCH_CSR_CPUID)
87#define write_gcsr_cpuid(val) gcsr_write(val, LOONGARCH_CSR_CPUID)
88#define read_gcsr_prcfg1() gcsr_read(LOONGARCH_CSR_PRCFG1)
89#define write_gcsr_prcfg1(val) gcsr_write(val, LOONGARCH_CSR_PRCFG1)
90#define read_gcsr_prcfg2() gcsr_read(LOONGARCH_CSR_PRCFG2)
91#define write_gcsr_prcfg2(val) gcsr_write(val, LOONGARCH_CSR_PRCFG2)
92#define read_gcsr_prcfg3() gcsr_read(LOONGARCH_CSR_PRCFG3)
93#define write_gcsr_prcfg3(val) gcsr_write(val, LOONGARCH_CSR_PRCFG3)
94
95#define read_gcsr_kscratch0() gcsr_read(LOONGARCH_CSR_KS0)
96#define write_gcsr_kscratch0(val) gcsr_write(val, LOONGARCH_CSR_KS0)
97#define read_gcsr_kscratch1() gcsr_read(LOONGARCH_CSR_KS1)
98#define write_gcsr_kscratch1(val) gcsr_write(val, LOONGARCH_CSR_KS1)
99#define read_gcsr_kscratch2() gcsr_read(LOONGARCH_CSR_KS2)
100#define write_gcsr_kscratch2(val) gcsr_write(val, LOONGARCH_CSR_KS2)
101#define read_gcsr_kscratch3() gcsr_read(LOONGARCH_CSR_KS3)
102#define write_gcsr_kscratch3(val) gcsr_write(val, LOONGARCH_CSR_KS3)
103#define read_gcsr_kscratch4() gcsr_read(LOONGARCH_CSR_KS4)
104#define write_gcsr_kscratch4(val) gcsr_write(val, LOONGARCH_CSR_KS4)
105#define read_gcsr_kscratch5() gcsr_read(LOONGARCH_CSR_KS5)
106#define write_gcsr_kscratch5(val) gcsr_write(val, LOONGARCH_CSR_KS5)
107#define read_gcsr_kscratch6() gcsr_read(LOONGARCH_CSR_KS6)
108#define write_gcsr_kscratch6(val) gcsr_write(val, LOONGARCH_CSR_KS6)
109#define read_gcsr_kscratch7() gcsr_read(LOONGARCH_CSR_KS7)
110#define write_gcsr_kscratch7(val) gcsr_write(val, LOONGARCH_CSR_KS7)
111
112#define read_gcsr_timerid() gcsr_read(LOONGARCH_CSR_TMID)
113#define write_gcsr_timerid(val) gcsr_write(val, LOONGARCH_CSR_TMID)
114#define read_gcsr_timercfg() gcsr_read(LOONGARCH_CSR_TCFG)
115#define write_gcsr_timercfg(val) gcsr_write(val, LOONGARCH_CSR_TCFG)
116#define read_gcsr_timertick() gcsr_read(LOONGARCH_CSR_TVAL)
117#define write_gcsr_timertick(val) gcsr_write(val, LOONGARCH_CSR_TVAL)
118#define read_gcsr_timeroffset() gcsr_read(LOONGARCH_CSR_CNTC)
119#define write_gcsr_timeroffset(val) gcsr_write(val, LOONGARCH_CSR_CNTC)
120
121#define read_gcsr_llbctl() gcsr_read(LOONGARCH_CSR_LLBCTL)
122#define write_gcsr_llbctl(val) gcsr_write(val, LOONGARCH_CSR_LLBCTL)
123
124#define read_gcsr_tlbidx() gcsr_read(LOONGARCH_CSR_TLBIDX)
125#define write_gcsr_tlbidx(val) gcsr_write(val, LOONGARCH_CSR_TLBIDX)
126#define read_gcsr_tlbrentry() gcsr_read(LOONGARCH_CSR_TLBRENTRY)
127#define write_gcsr_tlbrentry(val) gcsr_write(val, LOONGARCH_CSR_TLBRENTRY)
128#define read_gcsr_tlbrbadv() gcsr_read(LOONGARCH_CSR_TLBRBADV)
129#define write_gcsr_tlbrbadv(val) gcsr_write(val, LOONGARCH_CSR_TLBRBADV)
130#define read_gcsr_tlbrera() gcsr_read(LOONGARCH_CSR_TLBRERA)
131#define write_gcsr_tlbrera(val) gcsr_write(val, LOONGARCH_CSR_TLBRERA)
132#define read_gcsr_tlbrsave() gcsr_read(LOONGARCH_CSR_TLBRSAVE)
133#define write_gcsr_tlbrsave(val) gcsr_write(val, LOONGARCH_CSR_TLBRSAVE)
134#define read_gcsr_tlbrelo0() gcsr_read(LOONGARCH_CSR_TLBRELO0)
135#define write_gcsr_tlbrelo0(val) gcsr_write(val, LOONGARCH_CSR_TLBRELO0)
136#define read_gcsr_tlbrelo1() gcsr_read(LOONGARCH_CSR_TLBRELO1)
137#define write_gcsr_tlbrelo1(val) gcsr_write(val, LOONGARCH_CSR_TLBRELO1)
138#define read_gcsr_tlbrehi() gcsr_read(LOONGARCH_CSR_TLBREHI)
139#define write_gcsr_tlbrehi(val) gcsr_write(val, LOONGARCH_CSR_TLBREHI)
140#define read_gcsr_tlbrprmd() gcsr_read(LOONGARCH_CSR_TLBRPRMD)
141#define write_gcsr_tlbrprmd(val) gcsr_write(val, LOONGARCH_CSR_TLBRPRMD)
142
143#define read_gcsr_directwin0() gcsr_read(LOONGARCH_CSR_DMWIN0)
144#define write_gcsr_directwin0(val) gcsr_write(val, LOONGARCH_CSR_DMWIN0)
145#define read_gcsr_directwin1() gcsr_read(LOONGARCH_CSR_DMWIN1)
146#define write_gcsr_directwin1(val) gcsr_write(val, LOONGARCH_CSR_DMWIN1)
147#define read_gcsr_directwin2() gcsr_read(LOONGARCH_CSR_DMWIN2)
148#define write_gcsr_directwin2(val) gcsr_write(val, LOONGARCH_CSR_DMWIN2)
149#define read_gcsr_directwin3() gcsr_read(LOONGARCH_CSR_DMWIN3)
150#define write_gcsr_directwin3(val) gcsr_write(val, LOONGARCH_CSR_DMWIN3)
151
152/* Guest related CSRs */
153#define read_csr_gtlbc() csr_read64(LOONGARCH_CSR_GTLBC)
154#define write_csr_gtlbc(val) csr_write64(val, LOONGARCH_CSR_GTLBC)
155#define read_csr_trgp() csr_read64(LOONGARCH_CSR_TRGP)
156#define read_csr_gcfg() csr_read64(LOONGARCH_CSR_GCFG)
157#define write_csr_gcfg(val) csr_write64(val, LOONGARCH_CSR_GCFG)
158#define read_csr_gstat() csr_read64(LOONGARCH_CSR_GSTAT)
159#define write_csr_gstat(val) csr_write64(val, LOONGARCH_CSR_GSTAT)
160#define read_csr_gintc() csr_read64(LOONGARCH_CSR_GINTC)
161#define write_csr_gintc(val) csr_write64(val, LOONGARCH_CSR_GINTC)
162#define read_csr_gcntc() csr_read64(LOONGARCH_CSR_GCNTC)
163#define write_csr_gcntc(val) csr_write64(val, LOONGARCH_CSR_GCNTC)
164
165#define __BUILD_GCSR_OP(name) __BUILD_CSR_COMMON(gcsr_##name)
166
167__BUILD_CSR_OP(gcfg)
168__BUILD_CSR_OP(gstat)
169__BUILD_CSR_OP(gtlbc)
170__BUILD_CSR_OP(gintc)
171__BUILD_GCSR_OP(llbctl)
172__BUILD_GCSR_OP(tlbidx)
173
174#define set_gcsr_estat(val) \
175 gcsr_xchg(val, val, LOONGARCH_CSR_ESTAT)
176#define clear_gcsr_estat(val) \
177 gcsr_xchg(~(val), val, LOONGARCH_CSR_ESTAT)
178
179#define kvm_read_hw_gcsr(id) gcsr_read(id)
180#define kvm_write_hw_gcsr(id, val) gcsr_write(val, id)
181
182#define kvm_save_hw_gcsr(csr, gid) (csr->csrs[gid] = gcsr_read(gid))
183#define kvm_restore_hw_gcsr(csr, gid) (gcsr_write(csr->csrs[gid], gid))
184
185#define kvm_read_clear_hw_gcsr(csr, gid) (csr->csrs[gid] = gcsr_write(0, gid))
186
187int kvm_emu_iocsr(larch_inst inst, struct kvm_run *run, struct kvm_vcpu *vcpu);
188
189static __always_inline unsigned long kvm_read_sw_gcsr(struct loongarch_csrs *csr, int gid)
190{
191 return csr->csrs[gid];
192}
193
194static __always_inline void kvm_write_sw_gcsr(struct loongarch_csrs *csr, int gid, unsigned long val)
195{
196 csr->csrs[gid] = val;
197}
198
199static __always_inline void kvm_set_sw_gcsr(struct loongarch_csrs *csr,
200 int gid, unsigned long val)
201{
202 csr->csrs[gid] |= val;
203}
204
205static __always_inline void kvm_change_sw_gcsr(struct loongarch_csrs *csr,
206 int gid, unsigned long mask, unsigned long val)
207{
208 unsigned long _mask = mask;
209
210 csr->csrs[gid] &= ~_mask;
211 csr->csrs[gid] |= val & _mask;
212}
213
214#define KVM_PMU_EVENT_ENABLED (CSR_PERFCTRL_PLV0 | CSR_PERFCTRL_PLV1 | \
215 CSR_PERFCTRL_PLV2 | CSR_PERFCTRL_PLV3)
216
217#endif /* __ASM_LOONGARCH_KVM_CSR_H__ */