1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __MIPS_ASM_GINVT_H__
3 #define __MIPS_ASM_GINVT_H__
4
5 #include <asm/mipsregs.h>
6
7 enum ginvt_type {
8 GINVT_FULL,
9 GINVT_VA,
10 GINVT_MMID,
11 };
12
13 #ifdef TOOLCHAIN_SUPPORTS_GINV
14 # define _ASM_SET_GINV ".set ginv\n"
15 # define _ASM_UNSET_GINV
16 #else
17 # define _ASM_SET_GINV \
18 _ASM_MACRO_1R1I(ginvt, rs, type, \
19 _ASM_INSN_IF_MIPS(0x7c0000bd | (__rs << 21) | (\\type << 8)) \
20 _ASM_INSN32_IF_MM(0x0000717c | (__rs << 16) | (\\type << 9)))
21 # define _ASM_UNSET_GINV ".purgem ginvt\n"
22 #endif
23
24 static __always_inline void ginvt(unsigned long addr, enum ginvt_type type)
25 {
26 asm volatile(
27 ".set push\n"
28 _ASM_SET_GINV
29 " ginvt %0, %1\n"
30 _ASM_UNSET_GINV
31 ".set pop"
32 : /* no outputs */
33 : "r"(addr), "i"(type)
34 : "memory");
35 }
36
37 static inline void ginvt_full(void)
38 {
39 ginvt(0, GINVT_FULL);
40 }
41
42 static inline void ginvt_va(unsigned long addr)
43 {
44 addr &= PAGE_MASK << 1;
45 ginvt(addr, GINVT_VA);
46 }
47
48 static inline void ginvt_mmid(void)
49 {
50 ginvt(0, GINVT_MMID);
51 }
52
53 static inline void ginvt_va_mmid(unsigned long addr)
54 {
55 addr &= PAGE_MASK << 1;
56 ginvt(addr, GINVT_VA | GINVT_MMID);
57 }
58
59 #endif /* __MIPS_ASM_GINVT_H__ */
60
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