include/asm/tlb.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __ASM_TLB_H
0003 #define __ASM_TLB_H
0004
0005 #include <asm/cpu-features.h>
0006 #include <asm/mipsregs.h>
0007
0008 #define _UNIQUE_ENTRYHI(base, idx)                  \
0009         (((base) + ((idx) << (PAGE_SHIFT + 1))) |       \
0010          (cpu_has_tlbinv ? MIPS_ENTRYHI_EHINV : 0))
0011 #define UNIQUE_ENTRYHI(idx)     _UNIQUE_ENTRYHI(CKSEG0, idx)
0012 #define UNIQUE_GUEST_ENTRYHI(idx)   _UNIQUE_ENTRYHI(CKSEG1, idx)
0013
0014 static inline unsigned int num_wired_entries(void)
0015 {
0016     unsigned int wired = read_c0_wired();
0017
0018     if (cpu_has_mips_r6)
0019         wired &= MIPSR6_WIRED_WIRED;
0020
0021     return wired;
0022 }
0023
0024 #include <asm-generic/tlb.h>
0025
0026 #endif /* __ASM_TLB_H */