1 /* SPDX-License-Identifier: GPL-2.0-only */
11 #include <asm/alternative-macros.h>
16 #define RISCV_ISA_EXT_a		('a' - 'a')
17 #define RISCV_ISA_EXT_b		('b' - 'a')
18 #define RISCV_ISA_EXT_c		('c' - 'a')
19 #define RISCV_ISA_EXT_d		('d' - 'a')
20 #define RISCV_ISA_EXT_f		('f' - 'a')
21 #define RISCV_ISA_EXT_h		('h' - 'a')
22 #define RISCV_ISA_EXT_i		('i' - 'a')
23 #define RISCV_ISA_EXT_j		('j' - 'a')
24 #define RISCV_ISA_EXT_k		('k' - 'a')
25 #define RISCV_ISA_EXT_m		('m' - 'a')
26 #define RISCV_ISA_EXT_p		('p' - 'a')
27 #define RISCV_ISA_EXT_q		('q' - 'a')
28 #define RISCV_ISA_EXT_s		('s' - 'a')
29 #define RISCV_ISA_EXT_u		('u' - 'a')
30 #define RISCV_ISA_EXT_v		('v' - 'a')
33  * These macros represent the logical IDs of each multi-letter RISC-V ISA
35  * RISCV_ISA_EXT_BASE, which allows the 0-25 range to be reserved for single
42 #define RISCV_ISA_EXT_BASE		26
44 #define RISCV_ISA_EXT_SSCOFPMF		26
89 #define riscv_isa_extension_mask(ext) BIT_MASK(RISCV_ISA_EXT_##ext)  argument
92 #define riscv_isa_extension_available(isa_bitmap, ext)	\  argument
93 	__riscv_isa_extension_available(isa_bitmap, RISCV_ISA_EXT_##ext)
96 riscv_has_extension_likely(const unsigned long ext)  in riscv_has_extension_likely()  argument
98 	compiletime_assert(ext < RISCV_ISA_EXT_MAX,  in riscv_has_extension_likely()
99 			   "ext must be < RISCV_ISA_EXT_MAX");  in riscv_has_extension_likely()
103 		ALTERNATIVE("j	%l[l_no]", "nop", 0, %[ext], 1)  in riscv_has_extension_likely()
105 		: [ext] "i" (ext)  in riscv_has_extension_likely()
109 		if (!__riscv_isa_extension_available(NULL, ext))  in riscv_has_extension_likely()
119 riscv_has_extension_unlikely(const unsigned long ext)  in riscv_has_extension_unlikely()  argument
121 	compiletime_assert(ext < RISCV_ISA_EXT_MAX,  in riscv_has_extension_unlikely()
122 			   "ext must be < RISCV_ISA_EXT_MAX");  in riscv_has_extension_unlikely()
126 		ALTERNATIVE("nop", "j	%l[l_yes]", 0, %[ext], 1)  in riscv_has_extension_unlikely()
128 		: [ext] "i" (ext)  in riscv_has_extension_unlikely()
132 		if (__riscv_isa_extension_available(NULL, ext))  in riscv_has_extension_unlikely()
141 static __always_inline bool riscv_cpu_has_extension_likely(int cpu, const unsigned long ext)  in riscv_cpu_has_extension_likely()  argument
143 	if (IS_ENABLED(CONFIG_RISCV_ALTERNATIVE) && riscv_has_extension_likely(ext))  in riscv_cpu_has_extension_likely()
146 	return __riscv_isa_extension_available(hart_isa[cpu].isa, ext);  in riscv_cpu_has_extension_likely()
149 static __always_inline bool riscv_cpu_has_extension_unlikely(int cpu, const unsigned long ext)  in riscv_cpu_has_extension_unlikely()  argument
151 	if (IS_ENABLED(CONFIG_RISCV_ALTERNATIVE) && riscv_has_extension_unlikely(ext))  in riscv_cpu_has_extension_unlikely()
154 	return __riscv_isa_extension_available(hart_isa[cpu].isa, ext);  in riscv_cpu_has_extension_unlikely()