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/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_CKMMUV2_H
#define __ASM_CSKY_CKMMUV2_H
#include <abi/reg_ops.h>
#include <asm/barrier.h>
static inline int read_mmu_index(void)
{
return mfcr("cr<0, 15>");
}
static inline void write_mmu_index(int value)
{
mtcr("cr<0, 15>", value);
}
static inline int read_mmu_entrylo0(void)
{
return mfcr("cr<2, 15>");
}
static inline int read_mmu_entrylo1(void)
{
return mfcr("cr<3, 15>");
}
static inline void write_mmu_pagemask(int value)
{
mtcr("cr<6, 15>", value);
}
static inline int read_mmu_entryhi(void)
{
return mfcr("cr<4, 15>");
}
static inline void write_mmu_entryhi(int value)
{
mtcr("cr<4, 15>", value);
}
static inline unsigned long read_mmu_msa0(void)
{
return mfcr("cr<30, 15>");
}
static inline void write_mmu_msa0(unsigned long value)
{
mtcr("cr<30, 15>", value);
}
static inline unsigned long read_mmu_msa1(void)
{
return mfcr("cr<31, 15>");
}
static inline void write_mmu_msa1(unsigned long value)
{
mtcr("cr<31, 15>", value);
}
/*
* TLB operations.
*/
static inline void tlb_probe(void)
{
mtcr("cr<8, 15>", 0x80000000);
}
static inline void tlb_read(void)
{
mtcr("cr<8, 15>", 0x40000000);
}
static inline void tlb_invalid_all(void)
{
#ifdef CONFIG_CPU_HAS_TLBI
sync_is();
asm volatile(
"tlbi.alls \n"
"sync.i \n"
:
:
: "memory");
#else
mtcr("cr<8, 15>", 0x04000000);
#endif
}
static inline void local_tlb_invalid_all(void)
{
#ifdef CONFIG_CPU_HAS_TLBI
sync_is();
asm volatile(
"tlbi.all \n"
"sync.i \n"
:
:
: "memory");
#else
tlb_invalid_all();
#endif
}
static inline void tlb_invalid_indexed(void)
{
mtcr("cr<8, 15>", 0x02000000);
}
#define NOP32 ".long 0x4820c400\n"
static inline void setup_pgd(pgd_t *pgd, int asid)
{
#ifdef CONFIG_CPU_HAS_TLBI
sync_is();
#else
mb();
#endif
asm volatile(
#ifdef CONFIG_CPU_HAS_TLBI
"mtcr %1, cr<28, 15> \n"
#endif
"mtcr %1, cr<29, 15> \n"
"mtcr %0, cr< 4, 15> \n"
".rept 64 \n"
NOP32
".endr \n"
:
:"r"(asid), "r"(__pa(pgd) | BIT(0))
:"memory");
}
static inline pgd_t *get_pgd(void)
{
return __va(mfcr("cr<29, 15>") & ~BIT(0));
}
#endif /* __ASM_CSKY_CKMMUV2_H */
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