37 /* Host ISA bitmap */
40 /* Per-cpu ISA extensions. */
49  * @isa_bitmap: ISA bitmap to use
52  * NOTE: If isa_bitmap is NULL then Host ISA bitmap will be used.
66  * @isa_bitmap: ISA bitmap to use
70  * NOTE: If isa_bitmap is NULL then Host ISA bitmap will be used.
88 			pr_err("Zicbom detected in ISA string, disabling as no cbom-block-size found\n");  in riscv_isa_extension_check()
97 			pr_err("Zicboz detected in ISA string, but no cboz-block-size found\n");  in riscv_isa_extension_check()
116  * The canonical order of ISA extension names in the ISA string is defined in
120  * isa_ext_arr defines the order of the ISA string in /proc/cpuinfo.
190 					  unsigned long *isa2hwcap, const char *isa)  in riscv_parse_isa_string()  argument
198 	isa += 4;  in riscv_parse_isa_string()
200 	while (*isa) {  in riscv_parse_isa_string()
201 		const char *ext = isa++;  in riscv_parse_isa_string()
202 		const char *ext_end = isa;  in riscv_parse_isa_string()
210 			 * not valid ISA extensions. It works until multi-letter  in riscv_parse_isa_string()
214 				++isa;  in riscv_parse_isa_string()
243 			for (; *isa && *isa != '_'; ++isa)  in riscv_parse_isa_string()
244 				if (unlikely(!isalnum(*isa)))  in riscv_parse_isa_string()
247 			ext_end = isa;  in riscv_parse_isa_string()
273 			 * ensure that, when isa was incremented at the start of the loop,  in riscv_parse_isa_string()
291 			if (!isdigit(*isa))  in riscv_parse_isa_string()
294 			while (isdigit(*++isa))  in riscv_parse_isa_string()
297 			if (tolower(*isa) != 'p')  in riscv_parse_isa_string()
300 			if (!isdigit(*++isa)) {  in riscv_parse_isa_string()
301 				--isa;  in riscv_parse_isa_string()
305 			while (isdigit(*++isa))  in riscv_parse_isa_string()
312 		 * The parser expects that at the start of an iteration isa points to the  in riscv_parse_isa_string()
317 		if (*isa == '_')  in riscv_parse_isa_string()
318 			++isa;  in riscv_parse_isa_string()
325 				set_bit(bit, isainfo->isa);			\  in riscv_parse_isa_string()
335 				set_bit(nr, isainfo->isa);  in riscv_parse_isa_string()
349 	const char *isa;  in riscv_fill_hwcap_from_isa_string()  local
377 			rc = of_property_read_string(node, "riscv,isa", &isa);  in riscv_fill_hwcap_from_isa_string()
380 				pr_warn("Unable to find \"riscv,isa\" devicetree entry\n");  in riscv_fill_hwcap_from_isa_string()
384 			rc = acpi_get_riscv_isa(rhct, cpu, &isa);  in riscv_fill_hwcap_from_isa_string()
386 				pr_warn("Unable to get ISA for the hart - %d\n", cpu);  in riscv_fill_hwcap_from_isa_string()
391 		riscv_parse_isa_string(&this_hwcap, isainfo, isa2hwcap, isa);  in riscv_fill_hwcap_from_isa_string()
394 		 * These ones were as they were part of the base ISA when the  in riscv_fill_hwcap_from_isa_string()
396 		 * unconditionally where `i` is in riscv,isa on DT systems.  in riscv_fill_hwcap_from_isa_string()
399 			set_bit(RISCV_ISA_EXT_ZICSR, isainfo->isa);  in riscv_fill_hwcap_from_isa_string()
400 			set_bit(RISCV_ISA_EXT_ZIFENCEI, isainfo->isa);  in riscv_fill_hwcap_from_isa_string()
401 			set_bit(RISCV_ISA_EXT_ZICNTR, isainfo->isa);  in riscv_fill_hwcap_from_isa_string()
402 			set_bit(RISCV_ISA_EXT_ZIHPM, isainfo->isa);  in riscv_fill_hwcap_from_isa_string()
406 		 * "V" in ISA strings is ambiguous in practice: it should mean  in riscv_fill_hwcap_from_isa_string()
415 			clear_bit(RISCV_ISA_EXT_v, isainfo->isa);  in riscv_fill_hwcap_from_isa_string()
419 		 * All "okay" hart should have same isa. Set HWCAP based on  in riscv_fill_hwcap_from_isa_string()
429 			bitmap_copy(riscv_isa, isainfo->isa, RISCV_ISA_EXT_MAX);  in riscv_fill_hwcap_from_isa_string()
431 			bitmap_and(riscv_isa, riscv_isa, isainfo->isa, RISCV_ISA_EXT_MAX);  in riscv_fill_hwcap_from_isa_string()
453 		if (!of_property_present(cpu_node, "riscv,isa-extensions")) {  in riscv_fill_hwcap_from_ext_list()
459 			if (of_property_match_string(cpu_node, "riscv,isa-extensions",  in riscv_fill_hwcap_from_ext_list()
470 			set_bit(riscv_isa_ext[i].id, isainfo->isa);  in riscv_fill_hwcap_from_ext_list()
476 		 * All "okay" harts should have same isa. Set HWCAP based on  in riscv_fill_hwcap_from_ext_list()
485 			bitmap_copy(riscv_isa, isainfo->isa, RISCV_ISA_EXT_MAX);  in riscv_fill_hwcap_from_ext_list()
487 			bitmap_and(riscv_isa, riscv_isa, isainfo->isa, RISCV_ISA_EXT_MAX);  in riscv_fill_hwcap_from_ext_list()
528 			pr_info("Falling back to deprecated \"riscv,isa\"\n");  in riscv_fill_hwcap()
545 		 * ISA string in device tree might have 'v' flag, but  in riscv_fill_hwcap()
557 	pr_info("riscv: base ISA extensions %s\n", print_str);  in riscv_fill_hwcap()
737 			WARN(1, "This extension id:%d is not in ISA extension list", id);  in riscv_cpufeature_patch_func()