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#------------------------------------------------------------------------------
#
# LoongArch ASM CSR operation functions
#
# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
#include <Register/LoongArch64/Csr.h>
ASM_GLOBAL ASM_PFX (AsmCsrRead)
ASM_GLOBAL ASM_PFX (AsmCsrWrite)
ASM_GLOBAL ASM_PFX (AsmCsrXChg)
.macro AsmCsrRd Sel
csrrd $a0, \Sel
jirl $zero, $ra, 0
.endm
.macro AsmCsrWr Sel
csrwr $a0, \Sel
jirl $zero, $ra, 0
.endm
.macro AsmCsrXChange Sel
csrxchg $a0, $a1, \Sel
jirl $zero, $ra, 0
.endm
ASM_PFX(AsmCsrRead):
blt $a0, $zero, ReadSelNumErr
li.w $t0, LOONGARCH_CSR_EBASE
bltu $t0, $a0, TlbCsrRd
BasicCsrRd:
la.pcrel $t0, BasicCsrRead
alsl.d $t0, $a0, $t0, 3
jirl $zero, $t0, 0
TlbCsrRd:
li.w $t0, LOONGARCH_CSR_TLBIDX
bltu $a0, $t0, ReadSelNumErr
li.w $t0, LOONGARCH_CSR_RVACFG
bltu $t0, $a0, CfgCsrRd
la.pcrel $t0, TlbCsrRead
addi.w $t1, $a0, -LOONGARCH_CSR_TLBIDX
alsl.d $t0, $t1, $t0, 3
jirl $zero, $t0, 0
CfgCsrRd:
li.w $t0, LOONGARCH_CSR_CPUNUM
bltu $a0, $t0, ReadSelNumErr
li.w $t0, LOONGARCH_CSR_PRCFG3
bltu $t0, $a0, KcsCsrRd
la.pcrel $t0, CfgCsrRead
addi.w $t1, $a0, -LOONGARCH_CSR_CPUNUM
alsl.d $t0, $t1, $t0, 3
jirl $zero, $t0, 0
KcsCsrRd:
li.w $t0, LOONGARCH_CSR_KS0
bltu $a0, $t0, ReadSelNumErr
li.w $t0, LOONGARCH_CSR_KS8
bltu $t0, $a0, StableTimerCsrRd
la.pcrel $t0, KcsCsrRead
addi.w $t1, $a0, -LOONGARCH_CSR_KS0
alsl.d $t0, $t1, $t0, 3
jirl $zero, $t0, 0
StableTimerCsrRd:
li.w $t0, LOONGARCH_CSR_TMID
bltu $a0, $t0, ReadSelNumErr
li.w $t0, LOONGARCH_CSR_TINTCLR
bltu $t0, $a0, TlbRefillCsrRd
la.pcrel $t0, StableTimerCsrRead
addi.w $t1, $a0, -LOONGARCH_CSR_TMID
alsl.d $t0, $t1, $t0, 3
jirl $zero, $t0, 0
TlbRefillCsrRd:
li.w $t0, LOONGARCH_CSR_TLBREBASE
bltu $a0, $t0, ReadSelNumErr
li.w $t0, LOONGARCH_CSR_TLBREHI
bltu $t0, $a0, DirMapCsrRd
la.pcrel $t0, TlbRefillCsrRead
addi.w $t1, $a0, -LOONGARCH_CSR_TLBREBASE
alsl.d $t0, $t1, $t0, 3
jirl $zero, $t0, 0
DirMapCsrRd:
li.w $t0, LOONGARCH_CSR_DMWIN0
bltu $a0, $t0, ReadSelNumErr
li.w $t0, LOONGARCH_CSR_DMWIN3
bltu $t0, $a0, ReadSelNumErr
la.pcrel $t0, DirMapCsrRead
addi.w $t1, $a0, -LOONGARCH_CSR_DMWIN0
alsl.d $t0, $t1, $t0, 3
jirl $zero, $t0, 0
ReadSelNumErr:
addi.d $a0, $zero, -1
jirl $zero, $ra, 0
BasicCsrRead:
CsrSel = LOONGARCH_CSR_CRMD
.rept LOONGARCH_CSR_EBASE - LOONGARCH_CSR_CRMD + 1
AsmCsrRd CsrSel
CsrSel = CsrSel + 1
.endr
TlbCsrRead:
CsrSel = LOONGARCH_CSR_TLBIDX
.rept LOONGARCH_CSR_RVACFG - LOONGARCH_CSR_TLBIDX + 1
AsmCsrRd CsrSel
CsrSel = CsrSel + 1
.endr
CfgCsrRead:
CsrSel = LOONGARCH_CSR_CPUNUM
.rept LOONGARCH_CSR_PRCFG3 - LOONGARCH_CSR_CPUNUM + 1
AsmCsrRd CsrSel
CsrSel = CsrSel + 1
.endr
KcsCsrRead:
CsrSel = LOONGARCH_CSR_KS0
.rept LOONGARCH_CSR_KS8 - LOONGARCH_CSR_KS0 + 1
AsmCsrRd CsrSel
CsrSel = CsrSel + 1
.endr
StableTimerCsrRead:
CsrSel = LOONGARCH_CSR_TMID
.rept LOONGARCH_CSR_TINTCLR - LOONGARCH_CSR_TMID + 1
AsmCsrRd CsrSel
CsrSel = CsrSel + 1
.endr
TlbRefillCsrRead:
CsrSel = LOONGARCH_CSR_TLBREBASE
.rept LOONGARCH_CSR_TLBREHI - LOONGARCH_CSR_TLBREBASE + 1
AsmCsrRd CsrSel
CsrSel = CsrSel + 1
.endr
DirMapCsrRead:
CsrSel = LOONGARCH_CSR_DMWIN0
.rept LOONGARCH_CSR_DMWIN3 - LOONGARCH_CSR_DMWIN0 + 1
AsmCsrRd CsrSel
CsrSel = CsrSel + 1
.endr
ASM_PFX(AsmCsrWrite):
blt $a0, $zero, WriteSelNumErr
li.w $t0, LOONGARCH_CSR_EBASE
bltu $t0, $a0, TlbCsrWr
BasicCsrWr:
la.pcrel $t0, BasicCsrWrite
alsl.d $t0, $a0, $t0, 3
move $a0, $a1
jirl $zero, $t0, 0
TlbCsrWr:
li.w $t0, LOONGARCH_CSR_TLBIDX
bltu $a0, $t0, WriteSelNumErr
li.w $t0, LOONGARCH_CSR_RVACFG
bltu $t0, $a0, CfgCsrWr
la.pcrel $t0, TlbCsrWrite
addi.w $t1, $a0, -LOONGARCH_CSR_TLBIDX
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
jirl $zero, $t0, 0
CfgCsrWr:
li.w $t0, LOONGARCH_CSR_CPUNUM
bltu $a0, $t0, WriteSelNumErr
li.w $t0, LOONGARCH_CSR_PRCFG3
bltu $t0, $a0, KcsCsrWr
la.pcrel $t0, CfgCsrWrite
addi.w $t1, $a0, -LOONGARCH_CSR_CPUNUM
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
jirl $zero, $t0, 0
KcsCsrWr:
li.w $t0, LOONGARCH_CSR_KS0
bltu $a0, $t0, WriteSelNumErr
li.w $t0, LOONGARCH_CSR_KS8
bltu $t0, $a0, StableTimerCsrWr
la.pcrel $t0, KcsCsrWrite
addi.w $t1, $a0, -LOONGARCH_CSR_KS0
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
jirl $zero, $t0, 0
StableTimerCsrWr:
li.w $t0, LOONGARCH_CSR_TMID
bltu $a0, $t0, WriteSelNumErr
li.w $t0, LOONGARCH_CSR_TINTCLR
bltu $t0, $a0, TlbRefillCsrWr
la.pcrel $t0, StableTimerCsrWrite
addi.w $t1, $a0, -LOONGARCH_CSR_TMID
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
jirl $zero, $t0, 0
TlbRefillCsrWr:
li.w $t0, LOONGARCH_CSR_TLBREBASE
bltu $a0, $t0, WriteSelNumErr
li.w $t0, LOONGARCH_CSR_TLBREHI
bltu $t0, $a0, DirMapCsrWr
la.pcrel $t0, TlbRefillCsrWrite
addi.w $t1, $a0, -LOONGARCH_CSR_TLBREBASE
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
jirl $zero, $t0, 0
DirMapCsrWr:
li.w $t0, LOONGARCH_CSR_DMWIN0
bltu $a0, $t0, WriteSelNumErr
li.w $t0, LOONGARCH_CSR_DMWIN3
bltu $t0, $a0, WriteSelNumErr
la.pcrel $t0, DirMapCsrWrite
addi.w $t1, $a0, -LOONGARCH_CSR_DMWIN0
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
jirl $zero, $t0, 0
WriteSelNumErr:
addi.d $a0, $zero, -1
jirl $zero, $ra, 0
BasicCsrWrite:
CsrSel = LOONGARCH_CSR_CRMD
.rept LOONGARCH_CSR_EBASE - LOONGARCH_CSR_CRMD + 1
AsmCsrWr CsrSel
CsrSel = CsrSel + 1
.endr
TlbCsrWrite:
CsrSel = LOONGARCH_CSR_TLBIDX
.rept LOONGARCH_CSR_RVACFG - LOONGARCH_CSR_TLBIDX + 1
AsmCsrWr CsrSel
CsrSel = CsrSel + 1
.endr
CfgCsrWrite:
CsrSel = LOONGARCH_CSR_CPUNUM
.rept LOONGARCH_CSR_PRCFG3 - LOONGARCH_CSR_CPUNUM + 1
AsmCsrWr CsrSel
CsrSel = CsrSel + 1
.endr
KcsCsrWrite:
CsrSel = LOONGARCH_CSR_KS0
.rept LOONGARCH_CSR_KS8 - LOONGARCH_CSR_KS0 + 1
AsmCsrWr CsrSel
CsrSel = CsrSel + 1
.endr
StableTimerCsrWrite:
CsrSel = LOONGARCH_CSR_TMID
.rept LOONGARCH_CSR_TINTCLR - LOONGARCH_CSR_TMID + 1
AsmCsrWr CsrSel
CsrSel = CsrSel + 1
.endr
TlbRefillCsrWrite:
CsrSel = LOONGARCH_CSR_TLBREBASE
.rept LOONGARCH_CSR_TLBREHI - LOONGARCH_CSR_TLBREBASE + 1
AsmCsrWr CsrSel
CsrSel = CsrSel + 1
.endr
DirMapCsrWrite:
CsrSel = LOONGARCH_CSR_DMWIN0
.rept LOONGARCH_CSR_DMWIN3 - LOONGARCH_CSR_DMWIN0 + 1
AsmCsrWr CsrSel
CsrSel = CsrSel + 1
.endr
ASM_PFX(AsmCsrXChg):
blt $a0, $zero, XchgSelNumErr
li.w $t0, LOONGARCH_CSR_EBASE
bltu $t0, $a0, TlbCsrXchg
BasicCsrXchg:
la.pcrel $t0, BasicCsrXchange
alsl.d $t0, $a0, $t0, 3
move $a0, $a1
move $a1, $a2
jirl $zero, $t0, 0
TlbCsrXchg:
li.w $t0, LOONGARCH_CSR_TLBIDX
bltu $a0, $t0, XchgSelNumErr
li.w $t0, LOONGARCH_CSR_RVACFG
bltu $t0, $a0, CfgCsrXchg
la.pcrel $t0, TlbCsrXchange
addi.w $t1, $a0, -LOONGARCH_CSR_TLBIDX
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
move $a1, $a2
jirl $zero, $t0, 0
CfgCsrXchg:
li.w $t0, LOONGARCH_CSR_CPUNUM
bltu $a0, $t0, XchgSelNumErr
li.w $t0, LOONGARCH_CSR_PRCFG3
bltu $t0, $a0, KcsCsrXchg
la.pcrel $t0, CfgCsrXchange
addi.w $t1, $a0, -LOONGARCH_CSR_CPUNUM
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
move $a1, $a2
jirl $zero, $t0, 0
KcsCsrXchg:
li.w $t0, LOONGARCH_CSR_KS0
bltu $a0, $t0, XchgSelNumErr
li.w $t0, LOONGARCH_CSR_KS8
bltu $t0, $a0, StableTimerCsrXchg
la.pcrel $t0, KcsCsrXchange
addi.w $t1, $a0, -LOONGARCH_CSR_KS0
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
move $a1, $a2
jirl $zero, $t0, 0
StableTimerCsrXchg:
li.w $t0, LOONGARCH_CSR_TMID
bltu $a0, $t0, XchgSelNumErr
li.w $t0, LOONGARCH_CSR_TINTCLR
bltu $t0, $a0, TlbRefillCsrXchg
la.pcrel $t0, StableTimerCsrXchange
addi.w $t1, $a0, -LOONGARCH_CSR_TMID
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
move $a1, $a2
jirl $zero, $t0, 0
TlbRefillCsrXchg:
li.w $t0, LOONGARCH_CSR_TLBREBASE
bltu $a0, $t0, XchgSelNumErr
li.w $t0, LOONGARCH_CSR_TLBREHI
bltu $t0, $a0, DirMapCsrXchg
la.pcrel $t0, TlbRefillCsrXchange
addi.w $t1, $a0, -LOONGARCH_CSR_TLBREBASE
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
move $a1, $a2
jirl $zero, $t0, 0
DirMapCsrXchg:
li.w $t0, LOONGARCH_CSR_DMWIN0
bltu $a0, $t0, XchgSelNumErr
li.w $t0, LOONGARCH_CSR_DMWIN3
bltu $t0, $a0, XchgSelNumErr
la.pcrel $t0, DirMapCsrXchange
addi.w $t1, $a0, -LOONGARCH_CSR_DMWIN0
alsl.d $t0, $t1, $t0, 3
move $a0, $a1
move $a1, $a2
jirl $zero, $t0, 0
XchgSelNumErr:
addi.d $a0, $zero, -1
jirl $zero, $ra, 0
BasicCsrXchange:
CsrSel = LOONGARCH_CSR_CRMD
.rept LOONGARCH_CSR_EBASE - LOONGARCH_CSR_CRMD + 1
AsmCsrXChange CsrSel
CsrSel = CsrSel + 1
.endr
TlbCsrXchange:
CsrSel = LOONGARCH_CSR_TLBIDX
.rept LOONGARCH_CSR_RVACFG - LOONGARCH_CSR_TLBIDX + 1
AsmCsrXChange CsrSel
CsrSel = CsrSel + 1
.endr
CfgCsrXchange:
CsrSel = LOONGARCH_CSR_CPUNUM
.rept LOONGARCH_CSR_PRCFG3 - LOONGARCH_CSR_CPUNUM + 1
AsmCsrXChange CsrSel
CsrSel = CsrSel + 1
.endr
KcsCsrXchange:
CsrSel = LOONGARCH_CSR_KS0
.rept LOONGARCH_CSR_KS8 - LOONGARCH_CSR_KS0 + 1
AsmCsrXChange CsrSel
CsrSel = CsrSel + 1
.endr
StableTimerCsrXchange:
CsrSel = LOONGARCH_CSR_TMID
.rept LOONGARCH_CSR_TINTCLR - LOONGARCH_CSR_TMID + 1
AsmCsrXChange CsrSel
CsrSel = CsrSel + 1
.endr
TlbRefillCsrXchange:
CsrSel = LOONGARCH_CSR_TLBREBASE
.rept LOONGARCH_CSR_TLBREHI - LOONGARCH_CSR_TLBREBASE + 1
AsmCsrXChange CsrSel
CsrSel = CsrSel + 1
.endr
DirMapCsrXchange:
CsrSel = LOONGARCH_CSR_DMWIN0
.rept LOONGARCH_CSR_DMWIN3 - LOONGARCH_CSR_DMWIN0 + 1
AsmCsrXChange CsrSel
CsrSel = CsrSel + 1
.endr
.end
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