riscv/kernel/sys_hwprobe.c

19 static void hwprobe_arch_id(struct riscv_hwprobe *pair,
29 		switch (pair->key) {
56 	pair->value = id;
59 static void hwprobe_isa_ext0(struct riscv_hwprobe *pair,
65 	pair->value = 0;
67 		pair->value |= RISCV_HWPROBE_IMA_FD;
70 		pair->value |= RISCV_HWPROBE_IMA_C;
73 		pair->value |= RISCV_HWPROBE_IMA_V;
85 			pair->value |= RISCV_HWPROBE_EXT_##ext;				\
139 	pair->value &= ~missing;
144 	struct riscv_hwprobe pair;
146 	hwprobe_isa_ext0(&pair, cpus);
147 	return (pair.value & ext);
186 static void hwprobe_one_pair(struct riscv_hwprobe *pair,
189 	switch (pair->key) {
193 		hwprobe_arch_id(pair, cpus);
202 		pair->value = RISCV_HWPROBE_BASE_BEHAVIOR_IMA;
206 		hwprobe_isa_ext0(pair, cpus);
210 		pair->value = hwprobe_misaligned(cpus);
214 		pair->value = 0;
216 			pair->value = riscv_cboz_block_size;
225 		pair->key = -1;
226 		pair->value = 0;
270 		struct riscv_hwprobe pair;
272 		if (get_user(pair.key, &pairs->key))
275 		pair.value = 0;
276 		hwprobe_one_pair(&pair, &cpus);
277 		ret = put_user(pair.key, &pairs->key);
279 			ret = put_user(pair.value, &pairs->value);
319 		struct riscv_hwprobe pair, tmp;
322 		ret = copy_from_user(&pair, &pairs[i], sizeof(pair));
326 		if (!riscv_hwprobe_key_is_valid(pair.key)) {
328 			pair = (struct riscv_hwprobe){ .key = -1, };
329 			ret = copy_to_user(&pairs[i], &pair, sizeof(pair));
337 		tmp = (struct riscv_hwprobe){ .key = pair.key, };
344 			if (!riscv_hwprobe_pair_cmp(&tmp, &pair))
381 	struct riscv_hwprobe pair;
389 		pair.key = key;
390 		hwprobe_one_pair(&pair, cpu_online_mask);
392 		WARN_ON_ONCE(pair.key < 0);
394 		avd->all_cpu_hwprobe_values[key] = pair.value;
400 			id_bitsmash |= pair.value;