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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
85c51c51 RB |
2 | #include <linux/cpumask.h> |
3 | #include <linux/debugfs.h> | |
4 | #include <linux/fs.h> | |
5 | #include <linux/init.h> | |
6 | #include <linux/percpu.h> | |
7 | #include <linux/types.h> | |
75dcfc1d | 8 | #include <asm/debug.h> |
85c51c51 RB |
9 | #include <asm/fpu_emulator.h> |
10 | #include <asm/local.h> | |
11 | ||
12 | DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats); | |
13 | ||
14 | static int fpuemu_stat_get(void *data, u64 *val) | |
15 | { | |
16 | int cpu; | |
17 | unsigned long sum = 0; | |
18 | ||
19 | for_each_online_cpu(cpu) { | |
20 | struct mips_fpu_emulator_stats *ps; | |
21 | local_t *pv; | |
22 | ||
23 | ps = &per_cpu(fpuemustats, cpu); | |
24 | pv = (void *)ps + (unsigned long)data; | |
25 | sum += local_read(pv); | |
26 | } | |
27 | *val = sum; | |
28 | return 0; | |
29 | } | |
30 | DEFINE_SIMPLE_ATTRIBUTE(fops_fpuemu_stat, fpuemu_stat_get, NULL, "%llu\n"); | |
31 | ||
454854ac AM |
32 | /* |
33 | * Used to obtain names for a debugfs instruction counter, given field name | |
34 | * in fpuemustats structure. For example, for input "cmp_sueq_d", the output | |
35 | * would be "cmp.sueq.d". This is needed since dots are not allowed to be | |
36 | * used in structure field names, and are, on the other hand, desired to be | |
37 | * used in debugfs item names to be clearly associated to corresponding | |
38 | * MIPS FPU instructions. | |
39 | */ | |
40 | static void adjust_instruction_counter_name(char *out_name, char *in_name) | |
41 | { | |
42 | int i = 0; | |
43 | ||
44 | strcpy(out_name, in_name); | |
45 | while (in_name[i] != '\0') { | |
46 | if (out_name[i] == '_') | |
47 | out_name[i] = '.'; | |
48 | i++; | |
49 | } | |
50 | } | |
51 | ||
25ad8db6 AM |
52 | static int fpuemustats_clear_show(struct seq_file *s, void *unused) |
53 | { | |
54 | __this_cpu_write((fpuemustats).emulated, 0); | |
55 | __this_cpu_write((fpuemustats).loads, 0); | |
56 | __this_cpu_write((fpuemustats).stores, 0); | |
57 | __this_cpu_write((fpuemustats).branches, 0); | |
58 | __this_cpu_write((fpuemustats).cp1ops, 0); | |
59 | __this_cpu_write((fpuemustats).cp1xops, 0); | |
60 | __this_cpu_write((fpuemustats).errors, 0); | |
61 | __this_cpu_write((fpuemustats).ieee754_inexact, 0); | |
62 | __this_cpu_write((fpuemustats).ieee754_underflow, 0); | |
63 | __this_cpu_write((fpuemustats).ieee754_overflow, 0); | |
64 | __this_cpu_write((fpuemustats).ieee754_zerodiv, 0); | |
65 | __this_cpu_write((fpuemustats).ieee754_invalidop, 0); | |
66 | __this_cpu_write((fpuemustats).ds_emul, 0); | |
67 | ||
454854ac AM |
68 | __this_cpu_write((fpuemustats).abs_s, 0); |
69 | __this_cpu_write((fpuemustats).abs_d, 0); | |
70 | __this_cpu_write((fpuemustats).add_s, 0); | |
71 | __this_cpu_write((fpuemustats).add_d, 0); | |
72 | __this_cpu_write((fpuemustats).bc1eqz, 0); | |
73 | __this_cpu_write((fpuemustats).bc1nez, 0); | |
74 | __this_cpu_write((fpuemustats).ceil_w_s, 0); | |
75 | __this_cpu_write((fpuemustats).ceil_w_d, 0); | |
76 | __this_cpu_write((fpuemustats).ceil_l_s, 0); | |
77 | __this_cpu_write((fpuemustats).ceil_l_d, 0); | |
78 | __this_cpu_write((fpuemustats).class_s, 0); | |
79 | __this_cpu_write((fpuemustats).class_d, 0); | |
80 | __this_cpu_write((fpuemustats).cmp_af_s, 0); | |
81 | __this_cpu_write((fpuemustats).cmp_af_d, 0); | |
82 | __this_cpu_write((fpuemustats).cmp_eq_s, 0); | |
83 | __this_cpu_write((fpuemustats).cmp_eq_d, 0); | |
84 | __this_cpu_write((fpuemustats).cmp_le_s, 0); | |
85 | __this_cpu_write((fpuemustats).cmp_le_d, 0); | |
86 | __this_cpu_write((fpuemustats).cmp_lt_s, 0); | |
87 | __this_cpu_write((fpuemustats).cmp_lt_d, 0); | |
88 | __this_cpu_write((fpuemustats).cmp_ne_s, 0); | |
89 | __this_cpu_write((fpuemustats).cmp_ne_d, 0); | |
90 | __this_cpu_write((fpuemustats).cmp_or_s, 0); | |
91 | __this_cpu_write((fpuemustats).cmp_or_d, 0); | |
92 | __this_cpu_write((fpuemustats).cmp_ueq_s, 0); | |
93 | __this_cpu_write((fpuemustats).cmp_ueq_d, 0); | |
94 | __this_cpu_write((fpuemustats).cmp_ule_s, 0); | |
95 | __this_cpu_write((fpuemustats).cmp_ule_d, 0); | |
96 | __this_cpu_write((fpuemustats).cmp_ult_s, 0); | |
97 | __this_cpu_write((fpuemustats).cmp_ult_d, 0); | |
98 | __this_cpu_write((fpuemustats).cmp_un_s, 0); | |
99 | __this_cpu_write((fpuemustats).cmp_un_d, 0); | |
100 | __this_cpu_write((fpuemustats).cmp_une_s, 0); | |
101 | __this_cpu_write((fpuemustats).cmp_une_d, 0); | |
102 | __this_cpu_write((fpuemustats).cmp_saf_s, 0); | |
103 | __this_cpu_write((fpuemustats).cmp_saf_d, 0); | |
104 | __this_cpu_write((fpuemustats).cmp_seq_s, 0); | |
105 | __this_cpu_write((fpuemustats).cmp_seq_d, 0); | |
106 | __this_cpu_write((fpuemustats).cmp_sle_s, 0); | |
107 | __this_cpu_write((fpuemustats).cmp_sle_d, 0); | |
108 | __this_cpu_write((fpuemustats).cmp_slt_s, 0); | |
109 | __this_cpu_write((fpuemustats).cmp_slt_d, 0); | |
110 | __this_cpu_write((fpuemustats).cmp_sne_s, 0); | |
111 | __this_cpu_write((fpuemustats).cmp_sne_d, 0); | |
112 | __this_cpu_write((fpuemustats).cmp_sor_s, 0); | |
113 | __this_cpu_write((fpuemustats).cmp_sor_d, 0); | |
114 | __this_cpu_write((fpuemustats).cmp_sueq_s, 0); | |
115 | __this_cpu_write((fpuemustats).cmp_sueq_d, 0); | |
116 | __this_cpu_write((fpuemustats).cmp_sule_s, 0); | |
117 | __this_cpu_write((fpuemustats).cmp_sule_d, 0); | |
118 | __this_cpu_write((fpuemustats).cmp_sult_s, 0); | |
119 | __this_cpu_write((fpuemustats).cmp_sult_d, 0); | |
120 | __this_cpu_write((fpuemustats).cmp_sun_s, 0); | |
121 | __this_cpu_write((fpuemustats).cmp_sun_d, 0); | |
122 | __this_cpu_write((fpuemustats).cmp_sune_s, 0); | |
123 | __this_cpu_write((fpuemustats).cmp_sune_d, 0); | |
124 | __this_cpu_write((fpuemustats).cvt_d_l, 0); | |
125 | __this_cpu_write((fpuemustats).cvt_d_s, 0); | |
126 | __this_cpu_write((fpuemustats).cvt_d_w, 0); | |
127 | __this_cpu_write((fpuemustats).cvt_l_s, 0); | |
128 | __this_cpu_write((fpuemustats).cvt_l_d, 0); | |
129 | __this_cpu_write((fpuemustats).cvt_s_d, 0); | |
130 | __this_cpu_write((fpuemustats).cvt_s_l, 0); | |
131 | __this_cpu_write((fpuemustats).cvt_s_w, 0); | |
132 | __this_cpu_write((fpuemustats).cvt_w_s, 0); | |
133 | __this_cpu_write((fpuemustats).cvt_w_d, 0); | |
134 | __this_cpu_write((fpuemustats).div_s, 0); | |
135 | __this_cpu_write((fpuemustats).div_d, 0); | |
136 | __this_cpu_write((fpuemustats).floor_w_s, 0); | |
137 | __this_cpu_write((fpuemustats).floor_w_d, 0); | |
138 | __this_cpu_write((fpuemustats).floor_l_s, 0); | |
139 | __this_cpu_write((fpuemustats).floor_l_d, 0); | |
140 | __this_cpu_write((fpuemustats).maddf_s, 0); | |
141 | __this_cpu_write((fpuemustats).maddf_d, 0); | |
142 | __this_cpu_write((fpuemustats).max_s, 0); | |
143 | __this_cpu_write((fpuemustats).max_d, 0); | |
144 | __this_cpu_write((fpuemustats).maxa_s, 0); | |
145 | __this_cpu_write((fpuemustats).maxa_d, 0); | |
146 | __this_cpu_write((fpuemustats).min_s, 0); | |
147 | __this_cpu_write((fpuemustats).min_d, 0); | |
148 | __this_cpu_write((fpuemustats).mina_s, 0); | |
149 | __this_cpu_write((fpuemustats).mina_d, 0); | |
150 | __this_cpu_write((fpuemustats).mov_s, 0); | |
151 | __this_cpu_write((fpuemustats).mov_d, 0); | |
152 | __this_cpu_write((fpuemustats).msubf_s, 0); | |
153 | __this_cpu_write((fpuemustats).msubf_d, 0); | |
154 | __this_cpu_write((fpuemustats).mul_s, 0); | |
155 | __this_cpu_write((fpuemustats).mul_d, 0); | |
156 | __this_cpu_write((fpuemustats).neg_s, 0); | |
157 | __this_cpu_write((fpuemustats).neg_d, 0); | |
158 | __this_cpu_write((fpuemustats).recip_s, 0); | |
159 | __this_cpu_write((fpuemustats).recip_d, 0); | |
160 | __this_cpu_write((fpuemustats).rint_s, 0); | |
161 | __this_cpu_write((fpuemustats).rint_d, 0); | |
162 | __this_cpu_write((fpuemustats).round_w_s, 0); | |
163 | __this_cpu_write((fpuemustats).round_w_d, 0); | |
164 | __this_cpu_write((fpuemustats).round_l_s, 0); | |
165 | __this_cpu_write((fpuemustats).round_l_d, 0); | |
166 | __this_cpu_write((fpuemustats).rsqrt_s, 0); | |
167 | __this_cpu_write((fpuemustats).rsqrt_d, 0); | |
168 | __this_cpu_write((fpuemustats).sel_s, 0); | |
169 | __this_cpu_write((fpuemustats).sel_d, 0); | |
170 | __this_cpu_write((fpuemustats).seleqz_s, 0); | |
171 | __this_cpu_write((fpuemustats).seleqz_d, 0); | |
172 | __this_cpu_write((fpuemustats).selnez_s, 0); | |
173 | __this_cpu_write((fpuemustats).selnez_d, 0); | |
174 | __this_cpu_write((fpuemustats).sqrt_s, 0); | |
175 | __this_cpu_write((fpuemustats).sqrt_d, 0); | |
176 | __this_cpu_write((fpuemustats).sub_s, 0); | |
177 | __this_cpu_write((fpuemustats).sub_d, 0); | |
178 | __this_cpu_write((fpuemustats).trunc_w_s, 0); | |
179 | __this_cpu_write((fpuemustats).trunc_w_d, 0); | |
180 | __this_cpu_write((fpuemustats).trunc_l_s, 0); | |
181 | __this_cpu_write((fpuemustats).trunc_l_d, 0); | |
182 | ||
25ad8db6 AM |
183 | return 0; |
184 | } | |
185 | ||
186 | static int fpuemustats_clear_open(struct inode *inode, struct file *file) | |
187 | { | |
188 | return single_open(file, fpuemustats_clear_show, inode->i_private); | |
189 | } | |
190 | ||
191 | static const struct file_operations fpuemustats_clear_fops = { | |
192 | .open = fpuemustats_clear_open, | |
193 | .read = seq_read, | |
194 | .llseek = seq_lseek, | |
195 | .release = single_release, | |
196 | }; | |
197 | ||
85c51c51 RB |
198 | static int __init debugfs_fpuemu(void) |
199 | { | |
454854ac AM |
200 | struct dentry *fpuemu_debugfs_base_dir; |
201 | struct dentry *fpuemu_debugfs_inst_dir; | |
202 | struct dentry *d, *reset_file; | |
85c51c51 RB |
203 | |
204 | if (!mips_debugfs_dir) | |
205 | return -ENODEV; | |
454854ac AM |
206 | |
207 | fpuemu_debugfs_base_dir = debugfs_create_dir("fpuemustats", | |
208 | mips_debugfs_dir); | |
209 | if (!fpuemu_debugfs_base_dir) | |
85c51c51 | 210 | return -ENOMEM; |
454854ac | 211 | |
25ad8db6 AM |
212 | reset_file = debugfs_create_file("fpuemustats_clear", 0444, |
213 | mips_debugfs_dir, NULL, | |
214 | &fpuemustats_clear_fops); | |
215 | if (!reset_file) | |
216 | return -ENOMEM; | |
85c51c51 | 217 | |
47fa0c02 RB |
218 | #define FPU_EMU_STAT_OFFSET(m) \ |
219 | offsetof(struct mips_fpu_emulator_stats, m) | |
220 | ||
221 | #define FPU_STAT_CREATE(m) \ | |
222 | do { \ | |
454854ac | 223 | d = debugfs_create_file(#m, 0444, fpuemu_debugfs_base_dir, \ |
47fa0c02 RB |
224 | (void *)FPU_EMU_STAT_OFFSET(m), \ |
225 | &fops_fpuemu_stat); \ | |
226 | if (!d) \ | |
227 | return -ENOMEM; \ | |
228 | } while (0) | |
85c51c51 RB |
229 | |
230 | FPU_STAT_CREATE(emulated); | |
231 | FPU_STAT_CREATE(loads); | |
232 | FPU_STAT_CREATE(stores); | |
ae5f3f5b | 233 | FPU_STAT_CREATE(branches); |
85c51c51 RB |
234 | FPU_STAT_CREATE(cp1ops); |
235 | FPU_STAT_CREATE(cp1xops); | |
236 | FPU_STAT_CREATE(errors); | |
c4103526 DZ |
237 | FPU_STAT_CREATE(ieee754_inexact); |
238 | FPU_STAT_CREATE(ieee754_underflow); | |
239 | FPU_STAT_CREATE(ieee754_overflow); | |
240 | FPU_STAT_CREATE(ieee754_zerodiv); | |
241 | FPU_STAT_CREATE(ieee754_invalidop); | |
2707cd29 | 242 | FPU_STAT_CREATE(ds_emul); |
85c51c51 | 243 | |
454854ac AM |
244 | fpuemu_debugfs_inst_dir = debugfs_create_dir("instructions", |
245 | fpuemu_debugfs_base_dir); | |
246 | if (!fpuemu_debugfs_inst_dir) | |
247 | return -ENOMEM; | |
248 | ||
249 | #define FPU_STAT_CREATE_EX(m) \ | |
250 | do { \ | |
251 | char name[32]; \ | |
252 | \ | |
253 | adjust_instruction_counter_name(name, #m); \ | |
254 | \ | |
255 | d = debugfs_create_file(name, 0444, fpuemu_debugfs_inst_dir, \ | |
256 | (void *)FPU_EMU_STAT_OFFSET(m), \ | |
257 | &fops_fpuemu_stat); \ | |
258 | if (!d) \ | |
259 | return -ENOMEM; \ | |
260 | } while (0) | |
261 | ||
262 | FPU_STAT_CREATE_EX(abs_s); | |
263 | FPU_STAT_CREATE_EX(abs_d); | |
264 | FPU_STAT_CREATE_EX(add_s); | |
265 | FPU_STAT_CREATE_EX(add_d); | |
266 | FPU_STAT_CREATE_EX(bc1eqz); | |
267 | FPU_STAT_CREATE_EX(bc1nez); | |
268 | FPU_STAT_CREATE_EX(ceil_w_s); | |
269 | FPU_STAT_CREATE_EX(ceil_w_d); | |
270 | FPU_STAT_CREATE_EX(ceil_l_s); | |
271 | FPU_STAT_CREATE_EX(ceil_l_d); | |
272 | FPU_STAT_CREATE_EX(class_s); | |
273 | FPU_STAT_CREATE_EX(class_d); | |
274 | FPU_STAT_CREATE_EX(cmp_af_s); | |
275 | FPU_STAT_CREATE_EX(cmp_af_d); | |
276 | FPU_STAT_CREATE_EX(cmp_eq_s); | |
277 | FPU_STAT_CREATE_EX(cmp_eq_d); | |
278 | FPU_STAT_CREATE_EX(cmp_le_s); | |
279 | FPU_STAT_CREATE_EX(cmp_le_d); | |
280 | FPU_STAT_CREATE_EX(cmp_lt_s); | |
281 | FPU_STAT_CREATE_EX(cmp_lt_d); | |
282 | FPU_STAT_CREATE_EX(cmp_ne_s); | |
283 | FPU_STAT_CREATE_EX(cmp_ne_d); | |
284 | FPU_STAT_CREATE_EX(cmp_or_s); | |
285 | FPU_STAT_CREATE_EX(cmp_or_d); | |
286 | FPU_STAT_CREATE_EX(cmp_ueq_s); | |
287 | FPU_STAT_CREATE_EX(cmp_ueq_d); | |
288 | FPU_STAT_CREATE_EX(cmp_ule_s); | |
289 | FPU_STAT_CREATE_EX(cmp_ule_d); | |
290 | FPU_STAT_CREATE_EX(cmp_ult_s); | |
291 | FPU_STAT_CREATE_EX(cmp_ult_d); | |
292 | FPU_STAT_CREATE_EX(cmp_un_s); | |
293 | FPU_STAT_CREATE_EX(cmp_un_d); | |
294 | FPU_STAT_CREATE_EX(cmp_une_s); | |
295 | FPU_STAT_CREATE_EX(cmp_une_d); | |
296 | FPU_STAT_CREATE_EX(cmp_saf_s); | |
297 | FPU_STAT_CREATE_EX(cmp_saf_d); | |
298 | FPU_STAT_CREATE_EX(cmp_seq_s); | |
299 | FPU_STAT_CREATE_EX(cmp_seq_d); | |
300 | FPU_STAT_CREATE_EX(cmp_sle_s); | |
301 | FPU_STAT_CREATE_EX(cmp_sle_d); | |
302 | FPU_STAT_CREATE_EX(cmp_slt_s); | |
303 | FPU_STAT_CREATE_EX(cmp_slt_d); | |
304 | FPU_STAT_CREATE_EX(cmp_sne_s); | |
305 | FPU_STAT_CREATE_EX(cmp_sne_d); | |
306 | FPU_STAT_CREATE_EX(cmp_sor_s); | |
307 | FPU_STAT_CREATE_EX(cmp_sor_d); | |
308 | FPU_STAT_CREATE_EX(cmp_sueq_s); | |
309 | FPU_STAT_CREATE_EX(cmp_sueq_d); | |
310 | FPU_STAT_CREATE_EX(cmp_sule_s); | |
311 | FPU_STAT_CREATE_EX(cmp_sule_d); | |
312 | FPU_STAT_CREATE_EX(cmp_sult_s); | |
313 | FPU_STAT_CREATE_EX(cmp_sult_d); | |
314 | FPU_STAT_CREATE_EX(cmp_sun_s); | |
315 | FPU_STAT_CREATE_EX(cmp_sun_d); | |
316 | FPU_STAT_CREATE_EX(cmp_sune_s); | |
317 | FPU_STAT_CREATE_EX(cmp_sune_d); | |
318 | FPU_STAT_CREATE_EX(cvt_d_l); | |
319 | FPU_STAT_CREATE_EX(cvt_d_s); | |
320 | FPU_STAT_CREATE_EX(cvt_d_w); | |
321 | FPU_STAT_CREATE_EX(cvt_l_s); | |
322 | FPU_STAT_CREATE_EX(cvt_l_d); | |
323 | FPU_STAT_CREATE_EX(cvt_s_d); | |
324 | FPU_STAT_CREATE_EX(cvt_s_l); | |
325 | FPU_STAT_CREATE_EX(cvt_s_w); | |
326 | FPU_STAT_CREATE_EX(cvt_w_s); | |
327 | FPU_STAT_CREATE_EX(cvt_w_d); | |
328 | FPU_STAT_CREATE_EX(div_s); | |
329 | FPU_STAT_CREATE_EX(div_d); | |
330 | FPU_STAT_CREATE_EX(floor_w_s); | |
331 | FPU_STAT_CREATE_EX(floor_w_d); | |
332 | FPU_STAT_CREATE_EX(floor_l_s); | |
333 | FPU_STAT_CREATE_EX(floor_l_d); | |
334 | FPU_STAT_CREATE_EX(maddf_s); | |
335 | FPU_STAT_CREATE_EX(maddf_d); | |
336 | FPU_STAT_CREATE_EX(max_s); | |
337 | FPU_STAT_CREATE_EX(max_d); | |
338 | FPU_STAT_CREATE_EX(maxa_s); | |
339 | FPU_STAT_CREATE_EX(maxa_d); | |
340 | FPU_STAT_CREATE_EX(min_s); | |
341 | FPU_STAT_CREATE_EX(min_d); | |
342 | FPU_STAT_CREATE_EX(mina_s); | |
343 | FPU_STAT_CREATE_EX(mina_d); | |
344 | FPU_STAT_CREATE_EX(mov_s); | |
345 | FPU_STAT_CREATE_EX(mov_d); | |
346 | FPU_STAT_CREATE_EX(msubf_s); | |
347 | FPU_STAT_CREATE_EX(msubf_d); | |
348 | FPU_STAT_CREATE_EX(mul_s); | |
349 | FPU_STAT_CREATE_EX(mul_d); | |
350 | FPU_STAT_CREATE_EX(neg_s); | |
351 | FPU_STAT_CREATE_EX(neg_d); | |
352 | FPU_STAT_CREATE_EX(recip_s); | |
353 | FPU_STAT_CREATE_EX(recip_d); | |
354 | FPU_STAT_CREATE_EX(rint_s); | |
355 | FPU_STAT_CREATE_EX(rint_d); | |
356 | FPU_STAT_CREATE_EX(round_w_s); | |
357 | FPU_STAT_CREATE_EX(round_w_d); | |
358 | FPU_STAT_CREATE_EX(round_l_s); | |
359 | FPU_STAT_CREATE_EX(round_l_d); | |
360 | FPU_STAT_CREATE_EX(rsqrt_s); | |
361 | FPU_STAT_CREATE_EX(rsqrt_d); | |
362 | FPU_STAT_CREATE_EX(sel_s); | |
363 | FPU_STAT_CREATE_EX(sel_d); | |
364 | FPU_STAT_CREATE_EX(seleqz_s); | |
365 | FPU_STAT_CREATE_EX(seleqz_d); | |
366 | FPU_STAT_CREATE_EX(selnez_s); | |
367 | FPU_STAT_CREATE_EX(selnez_d); | |
368 | FPU_STAT_CREATE_EX(sqrt_s); | |
369 | FPU_STAT_CREATE_EX(sqrt_d); | |
370 | FPU_STAT_CREATE_EX(sub_s); | |
371 | FPU_STAT_CREATE_EX(sub_d); | |
372 | FPU_STAT_CREATE_EX(trunc_w_s); | |
373 | FPU_STAT_CREATE_EX(trunc_w_d); | |
374 | FPU_STAT_CREATE_EX(trunc_l_s); | |
375 | FPU_STAT_CREATE_EX(trunc_l_d); | |
376 | ||
85c51c51 RB |
377 | return 0; |
378 | } | |
1249ed35 | 379 | arch_initcall(debugfs_fpuemu); |