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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020-2023 Loongson Technology Corporation Limited
*/
#ifndef __ASM_LOONGARCH_KVM_CSR_H__
#define __ASM_LOONGARCH_KVM_CSR_H__
#include <linux/uaccess.h>
#include <linux/kvm_host.h>
#include <asm/loongarch.h>
#include <asm/kvm_vcpu.h>
#define gcsr_read(csr) \
({ \
register unsigned long __v; \
__asm__ __volatile__( \
" gcsrrd %[val], %[reg]\n\t" \
: [val] "=r" (__v) \
: [reg] "i" (csr) \
: "memory"); \
__v; \
})
#define gcsr_write(v, csr) \
({ \
register unsigned long __v = v; \
__asm__ __volatile__ ( \
" gcsrwr %[val], %[reg]\n\t" \
: [val] "+r" (__v) \
: [reg] "i" (csr) \
: "memory"); \
})
#define gcsr_xchg(v, m, csr) \
({ \
register unsigned long __v = v; \
__asm__ __volatile__( \
" gcsrxchg %[val], %[mask], %[reg]\n\t" \
: [val] "+r" (__v) \
: [mask] "r" (m), [reg] "i" (csr) \
: "memory"); \
__v; \
})
/* Guest CSRS read and write */
#define read_gcsr_crmd() gcsr_read(LOONGARCH_CSR_CRMD)
#define write_gcsr_crmd(val) gcsr_write(val, LOONGARCH_CSR_CRMD)
#define read_gcsr_prmd() gcsr_read(LOONGARCH_CSR_PRMD)
#define write_gcsr_prmd(val) gcsr_write(val, LOONGARCH_CSR_PRMD)
#define read_gcsr_euen() gcsr_read(LOONGARCH_CSR_EUEN)
#define write_gcsr_euen(val) gcsr_write(val, LOONGARCH_CSR_EUEN)
#define read_gcsr_misc() gcsr_read(LOONGARCH_CSR_MISC)
#define write_gcsr_misc(val) gcsr_write(val, LOONGARCH_CSR_MISC)
#define read_gcsr_ecfg() gcsr_read(LOONGARCH_CSR_ECFG)
#define write_gcsr_ecfg(val) gcsr_write(val, LOONGARCH_CSR_ECFG)
#define read_gcsr_estat() gcsr_read(LOONGARCH_CSR_ESTAT)
#define write_gcsr_estat(val) gcsr_write(val, LOONGARCH_CSR_ESTAT)
#define read_gcsr_era() gcsr_read(LOONGARCH_CSR_ERA)
#define write_gcsr_era(val) gcsr_write(val, LOONGARCH_CSR_ERA)
#define read_gcsr_badv() gcsr_read(LOONGARCH_CSR_BADV)
#define write_gcsr_badv(val) gcsr_write(val, LOONGARCH_CSR_BADV)
#define read_gcsr_badi() gcsr_read(LOONGARCH_CSR_BADI)
#define write_gcsr_badi(val) gcsr_write(val, LOONGARCH_CSR_BADI)
#define read_gcsr_eentry() gcsr_read(LOONGARCH_CSR_EENTRY)
#define write_gcsr_eentry(val) gcsr_write(val, LOONGARCH_CSR_EENTRY)
#define read_gcsr_asid() gcsr_read(LOONGARCH_CSR_ASID)
#define write_gcsr_asid(val) gcsr_write(val, LOONGARCH_CSR_ASID)
#define read_gcsr_pgdl() gcsr_read(LOONGARCH_CSR_PGDL)
#define write_gcsr_pgdl(val) gcsr_write(val, LOONGARCH_CSR_PGDL)
#define read_gcsr_pgdh() gcsr_read(LOONGARCH_CSR_PGDH)
#define write_gcsr_pgdh(val) gcsr_write(val, LOONGARCH_CSR_PGDH)
#define write_gcsr_pgd(val) gcsr_write(val, LOONGARCH_CSR_PGD)
#define read_gcsr_pgd() gcsr_read(LOONGARCH_CSR_PGD)
#define read_gcsr_pwctl0() gcsr_read(LOONGARCH_CSR_PWCTL0)
#define write_gcsr_pwctl0(val) gcsr_write(val, LOONGARCH_CSR_PWCTL0)
#define read_gcsr_pwctl1() gcsr_read(LOONGARCH_CSR_PWCTL1)
#define write_gcsr_pwctl1(val) gcsr_write(val, LOONGARCH_CSR_PWCTL1)
#define read_gcsr_stlbpgsize() gcsr_read(LOONGARCH_CSR_STLBPGSIZE)
#define write_gcsr_stlbpgsize(val) gcsr_write(val, LOONGARCH_CSR_STLBPGSIZE)
#define read_gcsr_rvacfg() gcsr_read(LOONGARCH_CSR_RVACFG)
#define write_gcsr_rvacfg(val) gcsr_write(val, LOONGARCH_CSR_RVACFG)
#define read_gcsr_cpuid() gcsr_read(LOONGARCH_CSR_CPUID)
#define write_gcsr_cpuid(val) gcsr_write(val, LOONGARCH_CSR_CPUID)
#define read_gcsr_prcfg1() gcsr_read(LOONGARCH_CSR_PRCFG1)
#define write_gcsr_prcfg1(val) gcsr_write(val, LOONGARCH_CSR_PRCFG1)
#define read_gcsr_prcfg2() gcsr_read(LOONGARCH_CSR_PRCFG2)
#define write_gcsr_prcfg2(val) gcsr_write(val, LOONGARCH_CSR_PRCFG2)
#define read_gcsr_prcfg3() gcsr_read(LOONGARCH_CSR_PRCFG3)
#define write_gcsr_prcfg3(val) gcsr_write(val, LOONGARCH_CSR_PRCFG3)
#define read_gcsr_kscratch0() gcsr_read(LOONGARCH_CSR_KS0)
#define write_gcsr_kscratch0(val) gcsr_write(val, LOONGARCH_CSR_KS0)
#define read_gcsr_kscratch1() gcsr_read(LOONGARCH_CSR_KS1)
#define write_gcsr_kscratch1(val) gcsr_write(val, LOONGARCH_CSR_KS1)
#define read_gcsr_kscratch2() gcsr_read(LOONGARCH_CSR_KS2)
#define write_gcsr_kscratch2(val) gcsr_write(val, LOONGARCH_CSR_KS2)
#define read_gcsr_kscratch3() gcsr_read(LOONGARCH_CSR_KS3)
#define write_gcsr_kscratch3(val) gcsr_write(val, LOONGARCH_CSR_KS3)
#define read_gcsr_kscratch4() gcsr_read(LOONGARCH_CSR_KS4)
#define write_gcsr_kscratch4(val) gcsr_write(val, LOONGARCH_CSR_KS4)
#define read_gcsr_kscratch5() gcsr_read(LOONGARCH_CSR_KS5)
#define write_gcsr_kscratch5(val) gcsr_write(val, LOONGARCH_CSR_KS5)
#define read_gcsr_kscratch6() gcsr_read(LOONGARCH_CSR_KS6)
#define write_gcsr_kscratch6(val) gcsr_write(val, LOONGARCH_CSR_KS6)
#define read_gcsr_kscratch7() gcsr_read(LOONGARCH_CSR_KS7)
#define write_gcsr_kscratch7(val) gcsr_write(val, LOONGARCH_CSR_KS7)
#define read_gcsr_timerid() gcsr_read(LOONGARCH_CSR_TMID)
#define write_gcsr_timerid(val) gcsr_write(val, LOONGARCH_CSR_TMID)
#define read_gcsr_timercfg() gcsr_read(LOONGARCH_CSR_TCFG)
#define write_gcsr_timercfg(val) gcsr_write(val, LOONGARCH_CSR_TCFG)
#define read_gcsr_timertick() gcsr_read(LOONGARCH_CSR_TVAL)
#define write_gcsr_timertick(val) gcsr_write(val, LOONGARCH_CSR_TVAL)
#define read_gcsr_timeroffset() gcsr_read(LOONGARCH_CSR_CNTC)
#define write_gcsr_timeroffset(val) gcsr_write(val, LOONGARCH_CSR_CNTC)
#define read_gcsr_llbctl() gcsr_read(LOONGARCH_CSR_LLBCTL)
#define write_gcsr_llbctl(val) gcsr_write(val, LOONGARCH_CSR_LLBCTL)
#define read_gcsr_tlbidx() gcsr_read(LOONGARCH_CSR_TLBIDX)
#define write_gcsr_tlbidx(val) gcsr_write(val, LOONGARCH_CSR_TLBIDX)
#define read_gcsr_tlbrentry() gcsr_read(LOONGARCH_CSR_TLBRENTRY)
#define write_gcsr_tlbrentry(val) gcsr_write(val, LOONGARCH_CSR_TLBRENTRY)
#define read_gcsr_tlbrbadv() gcsr_read(LOONGARCH_CSR_TLBRBADV)
#define write_gcsr_tlbrbadv(val) gcsr_write(val, LOONGARCH_CSR_TLBRBADV)
#define read_gcsr_tlbrera() gcsr_read(LOONGARCH_CSR_TLBRERA)
#define write_gcsr_tlbrera(val) gcsr_write(val, LOONGARCH_CSR_TLBRERA)
#define read_gcsr_tlbrsave() gcsr_read(LOONGARCH_CSR_TLBRSAVE)
#define write_gcsr_tlbrsave(val) gcsr_write(val, LOONGARCH_CSR_TLBRSAVE)
#define read_gcsr_tlbrelo0() gcsr_read(LOONGARCH_CSR_TLBRELO0)
#define write_gcsr_tlbrelo0(val) gcsr_write(val, LOONGARCH_CSR_TLBRELO0)
#define read_gcsr_tlbrelo1() gcsr_read(LOONGARCH_CSR_TLBRELO1)
#define write_gcsr_tlbrelo1(val) gcsr_write(val, LOONGARCH_CSR_TLBRELO1)
#define read_gcsr_tlbrehi() gcsr_read(LOONGARCH_CSR_TLBREHI)
#define write_gcsr_tlbrehi(val) gcsr_write(val, LOONGARCH_CSR_TLBREHI)
#define read_gcsr_tlbrprmd() gcsr_read(LOONGARCH_CSR_TLBRPRMD)
#define write_gcsr_tlbrprmd(val) gcsr_write(val, LOONGARCH_CSR_TLBRPRMD)
#define read_gcsr_directwin0() gcsr_read(LOONGARCH_CSR_DMWIN0)
#define write_gcsr_directwin0(val) gcsr_write(val, LOONGARCH_CSR_DMWIN0)
#define read_gcsr_directwin1() gcsr_read(LOONGARCH_CSR_DMWIN1)
#define write_gcsr_directwin1(val) gcsr_write(val, LOONGARCH_CSR_DMWIN1)
#define read_gcsr_directwin2() gcsr_read(LOONGARCH_CSR_DMWIN2)
#define write_gcsr_directwin2(val) gcsr_write(val, LOONGARCH_CSR_DMWIN2)
#define read_gcsr_directwin3() gcsr_read(LOONGARCH_CSR_DMWIN3)
#define write_gcsr_directwin3(val) gcsr_write(val, LOONGARCH_CSR_DMWIN3)
/* Guest related CSRs */
#define read_csr_gtlbc() csr_read64(LOONGARCH_CSR_GTLBC)
#define write_csr_gtlbc(val) csr_write64(val, LOONGARCH_CSR_GTLBC)
#define read_csr_trgp() csr_read64(LOONGARCH_CSR_TRGP)
#define read_csr_gcfg() csr_read64(LOONGARCH_CSR_GCFG)
#define write_csr_gcfg(val) csr_write64(val, LOONGARCH_CSR_GCFG)
#define read_csr_gstat() csr_read64(LOONGARCH_CSR_GSTAT)
#define write_csr_gstat(val) csr_write64(val, LOONGARCH_CSR_GSTAT)
#define read_csr_gintc() csr_read64(LOONGARCH_CSR_GINTC)
#define write_csr_gintc(val) csr_write64(val, LOONGARCH_CSR_GINTC)
#define read_csr_gcntc() csr_read64(LOONGARCH_CSR_GCNTC)
#define write_csr_gcntc(val) csr_write64(val, LOONGARCH_CSR_GCNTC)
#define __BUILD_GCSR_OP(name) __BUILD_CSR_COMMON(gcsr_##name)
__BUILD_CSR_OP(gcfg)
__BUILD_CSR_OP(gstat)
__BUILD_CSR_OP(gtlbc)
__BUILD_CSR_OP(gintc)
__BUILD_GCSR_OP(llbctl)
__BUILD_GCSR_OP(tlbidx)
#define set_gcsr_estat(val) \
gcsr_xchg(val, val, LOONGARCH_CSR_ESTAT)
#define clear_gcsr_estat(val) \
gcsr_xchg(~(val), val, LOONGARCH_CSR_ESTAT)
#define kvm_read_hw_gcsr(id) gcsr_read(id)
#define kvm_write_hw_gcsr(id, val) gcsr_write(val, id)
#define kvm_save_hw_gcsr(csr, gid) (csr->csrs[gid] = gcsr_read(gid))
#define kvm_restore_hw_gcsr(csr, gid) (gcsr_write(csr->csrs[gid], gid))
int kvm_emu_iocsr(larch_inst inst, struct kvm_run *run, struct kvm_vcpu *vcpu);
static __always_inline unsigned long kvm_read_sw_gcsr(struct loongarch_csrs *csr, int gid)
{
return csr->csrs[gid];
}
static __always_inline void kvm_write_sw_gcsr(struct loongarch_csrs *csr, int gid, unsigned long val)
{
csr->csrs[gid] = val;
}
static __always_inline void kvm_set_sw_gcsr(struct loongarch_csrs *csr,
int gid, unsigned long val)
{
csr->csrs[gid] |= val;
}
static __always_inline void kvm_change_sw_gcsr(struct loongarch_csrs *csr,
int gid, unsigned long mask, unsigned long val)
{
unsigned long _mask = mask;
csr->csrs[gid] &= ~_mask;
csr->csrs[gid] |= val & _mask;
}
#endif /* __ASM_LOONGARCH_KVM_CSR_H__ */
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