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Merge tag 'amd-drm-next-6.5-2023-06-09' of https://gitlab.freedesktop.org/agd5f/linux...
[J-linux.git] / tools / perf / util / amd-sample-raw.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * AMD specific. Provide textual annotation for IBS raw sample data.
4  */
5
6 #include <unistd.h>
7 #include <stdio.h>
8 #include <string.h>
9 #include <inttypes.h>
10
11 #include <linux/string.h>
12 #include "../../arch/x86/include/asm/amd-ibs.h"
13
14 #include "debug.h"
15 #include "session.h"
16 #include "evlist.h"
17 #include "sample-raw.h"
18 #include "pmu-events/pmu-events.h"
19 #include "util/sample.h"
20
21 static u32 cpu_family, cpu_model, ibs_fetch_type, ibs_op_type;
22 static bool zen4_ibs_extensions;
23
24 static void pr_ibs_fetch_ctl(union ibs_fetch_ctl reg)
25 {
26         const char * const ic_miss_strs[] = {
27                 " IcMiss 0",
28                 " IcMiss 1",
29         };
30         const char * const l1tlb_pgsz_strs[] = {
31                 " L1TlbPgSz 4KB",
32                 " L1TlbPgSz 2MB",
33                 " L1TlbPgSz 1GB",
34                 " L1TlbPgSz RESERVED"
35         };
36         const char * const l1tlb_pgsz_strs_erratum1347[] = {
37                 " L1TlbPgSz 4KB",
38                 " L1TlbPgSz 16KB",
39                 " L1TlbPgSz 2MB",
40                 " L1TlbPgSz 1GB"
41         };
42         const char *ic_miss_str = NULL;
43         const char *l1tlb_pgsz_str = NULL;
44         char l3_miss_str[sizeof(" L3MissOnly _ FetchOcMiss _ FetchL3Miss _")] = "";
45
46         if (cpu_family == 0x19 && cpu_model < 0x10) {
47                 /*
48                  * Erratum #1238 workaround is to ignore MSRC001_1030[IbsIcMiss]
49                  * Erratum #1347 workaround is to use table provided in erratum
50                  */
51                 if (reg.phy_addr_valid)
52                         l1tlb_pgsz_str = l1tlb_pgsz_strs_erratum1347[reg.l1tlb_pgsz];
53         } else {
54                 if (reg.phy_addr_valid)
55                         l1tlb_pgsz_str = l1tlb_pgsz_strs[reg.l1tlb_pgsz];
56                 ic_miss_str = ic_miss_strs[reg.ic_miss];
57         }
58
59         if (zen4_ibs_extensions) {
60                 snprintf(l3_miss_str, sizeof(l3_miss_str),
61                          " L3MissOnly %d FetchOcMiss %d FetchL3Miss %d",
62                          reg.l3_miss_only, reg.fetch_oc_miss, reg.fetch_l3_miss);
63         }
64
65         printf("ibs_fetch_ctl:\t%016llx MaxCnt %7d Cnt %7d Lat %5d En %d Val %d Comp %d%s "
66                 "PhyAddrValid %d%s L1TlbMiss %d L2TlbMiss %d RandEn %d%s%s\n",
67                 reg.val, reg.fetch_maxcnt << 4, reg.fetch_cnt << 4, reg.fetch_lat,
68                 reg.fetch_en, reg.fetch_val, reg.fetch_comp, ic_miss_str ? : "",
69                 reg.phy_addr_valid, l1tlb_pgsz_str ? : "", reg.l1tlb_miss, reg.l2tlb_miss,
70                 reg.rand_en, reg.fetch_comp ? (reg.fetch_l2_miss ? " L2Miss 1" : " L2Miss 0") : "",
71                 l3_miss_str);
72 }
73
74 static void pr_ic_ibs_extd_ctl(union ic_ibs_extd_ctl reg)
75 {
76         printf("ic_ibs_ext_ctl:\t%016llx IbsItlbRefillLat %3d\n", reg.val, reg.itlb_refill_lat);
77 }
78
79 static void pr_ibs_op_ctl(union ibs_op_ctl reg)
80 {
81         char l3_miss_only[sizeof(" L3MissOnly _")] = "";
82
83         if (zen4_ibs_extensions)
84                 snprintf(l3_miss_only, sizeof(l3_miss_only), " L3MissOnly %d", reg.l3_miss_only);
85
86         printf("ibs_op_ctl:\t%016llx MaxCnt %9d%s En %d Val %d CntCtl %d=%s CurCnt %9d\n",
87                 reg.val, ((reg.opmaxcnt_ext << 16) | reg.opmaxcnt) << 4, l3_miss_only,
88                 reg.op_en, reg.op_val, reg.cnt_ctl,
89                 reg.cnt_ctl ? "uOps" : "cycles", reg.opcurcnt);
90 }
91
92 static void pr_ibs_op_data(union ibs_op_data reg)
93 {
94         printf("ibs_op_data:\t%016llx CompToRetCtr %5d TagToRetCtr %5d%s%s%s BrnRet %d "
95                 " RipInvalid %d BrnFuse %d Microcode %d\n",
96                 reg.val, reg.comp_to_ret_ctr, reg.tag_to_ret_ctr,
97                 reg.op_brn_ret ? (reg.op_return ? " OpReturn 1" : " OpReturn 0") : "",
98                 reg.op_brn_ret ? (reg.op_brn_taken ? " OpBrnTaken 1" : " OpBrnTaken 0") : "",
99                 reg.op_brn_ret ? (reg.op_brn_misp ? " OpBrnMisp 1" : " OpBrnMisp 0") : "",
100                 reg.op_brn_ret, reg.op_rip_invalid, reg.op_brn_fuse, reg.op_microcode);
101 }
102
103 static void pr_ibs_op_data2_extended(union ibs_op_data2 reg)
104 {
105         static const char * const data_src_str[] = {
106                 "",
107                 " DataSrc 1=Local L3 or other L1/L2 in CCX",
108                 " DataSrc 2=Another CCX cache in the same NUMA node",
109                 " DataSrc 3=DRAM",
110                 " DataSrc 4=(reserved)",
111                 " DataSrc 5=Another CCX cache in a different NUMA node",
112                 " DataSrc 6=Long-latency DIMM",
113                 " DataSrc 7=MMIO/Config/PCI/APIC",
114                 " DataSrc 8=Extension Memory",
115                 " DataSrc 9=(reserved)",
116                 " DataSrc 10=(reserved)",
117                 " DataSrc 11=(reserved)",
118                 " DataSrc 12=Coherent Memory of a different processor type",
119                 /* 13 to 31 are reserved. Avoid printing them. */
120         };
121         int data_src = (reg.data_src_hi << 3) | reg.data_src_lo;
122
123         printf("ibs_op_data2:\t%016llx %sRmtNode %d%s\n", reg.val,
124                 (data_src == 1 || data_src == 2 || data_src == 5) ?
125                         (reg.cache_hit_st ? "CacheHitSt 1=O-State " : "CacheHitSt 0=M-state ") : "",
126                 reg.rmt_node,
127                 data_src < (int)ARRAY_SIZE(data_src_str) ? data_src_str[data_src] : "");
128 }
129
130 static void pr_ibs_op_data2_default(union ibs_op_data2 reg)
131 {
132         static const char * const data_src_str[] = {
133                 "",
134                 " DataSrc 1=(reserved)",
135                 " DataSrc 2=Local node cache",
136                 " DataSrc 3=DRAM",
137                 " DataSrc 4=Remote node cache",
138                 " DataSrc 5=(reserved)",
139                 " DataSrc 6=(reserved)",
140                 " DataSrc 7=Other"
141         };
142
143         printf("ibs_op_data2:\t%016llx %sRmtNode %d%s\n", reg.val,
144                reg.data_src_lo == 2 ? (reg.cache_hit_st ? "CacheHitSt 1=O-State "
145                                                      : "CacheHitSt 0=M-state ") : "",
146                reg.rmt_node, data_src_str[reg.data_src_lo]);
147 }
148
149 static void pr_ibs_op_data2(union ibs_op_data2 reg)
150 {
151         if (zen4_ibs_extensions)
152                 return pr_ibs_op_data2_extended(reg);
153         pr_ibs_op_data2_default(reg);
154 }
155
156 static void pr_ibs_op_data3(union ibs_op_data3 reg)
157 {
158         char l2_miss_str[sizeof(" L2Miss _")] = "";
159         char op_mem_width_str[sizeof(" OpMemWidth _____ bytes")] = "";
160         char op_dc_miss_open_mem_reqs_str[sizeof(" OpDcMissOpenMemReqs __")] = "";
161
162         /*
163          * Erratum #1293
164          * Ignore L2Miss and OpDcMissOpenMemReqs (and opdata2) if DcMissNoMabAlloc or SwPf set
165          */
166         if (!(cpu_family == 0x19 && cpu_model < 0x10 && (reg.dc_miss_no_mab_alloc || reg.sw_pf))) {
167                 snprintf(l2_miss_str, sizeof(l2_miss_str), " L2Miss %d", reg.l2_miss);
168                 snprintf(op_dc_miss_open_mem_reqs_str, sizeof(op_dc_miss_open_mem_reqs_str),
169                          " OpDcMissOpenMemReqs %2d", reg.op_dc_miss_open_mem_reqs);
170         }
171
172         if (reg.op_mem_width)
173                 snprintf(op_mem_width_str, sizeof(op_mem_width_str),
174                          " OpMemWidth %2d bytes", 1 << (reg.op_mem_width - 1));
175
176         printf("ibs_op_data3:\t%016llx LdOp %d StOp %d DcL1TlbMiss %d DcL2TlbMiss %d "
177                 "DcL1TlbHit2M %d DcL1TlbHit1G %d DcL2TlbHit2M %d DcMiss %d DcMisAcc %d "
178                 "DcWcMemAcc %d DcUcMemAcc %d DcLockedOp %d DcMissNoMabAlloc %d DcLinAddrValid %d "
179                 "DcPhyAddrValid %d DcL2TlbHit1G %d%s SwPf %d%s%s DcMissLat %5d TlbRefillLat %5d\n",
180                 reg.val, reg.ld_op, reg.st_op, reg.dc_l1tlb_miss, reg.dc_l2tlb_miss,
181                 reg.dc_l1tlb_hit_2m, reg.dc_l1tlb_hit_1g, reg.dc_l2tlb_hit_2m, reg.dc_miss,
182                 reg.dc_mis_acc, reg.dc_wc_mem_acc, reg.dc_uc_mem_acc, reg.dc_locked_op,
183                 reg.dc_miss_no_mab_alloc, reg.dc_lin_addr_valid, reg.dc_phy_addr_valid,
184                 reg.dc_l2_tlb_hit_1g, l2_miss_str, reg.sw_pf, op_mem_width_str,
185                 op_dc_miss_open_mem_reqs_str, reg.dc_miss_lat, reg.tlb_refill_lat);
186 }
187
188 /*
189  * IBS Op/Execution MSRs always saved, in order, are:
190  * IBS_OP_CTL, IBS_OP_RIP, IBS_OP_DATA, IBS_OP_DATA2,
191  * IBS_OP_DATA3, IBS_DC_LINADDR, IBS_DC_PHYSADDR, BP_IBSTGT_RIP
192  */
193 static void amd_dump_ibs_op(struct perf_sample *sample)
194 {
195         struct perf_ibs_data *data = sample->raw_data;
196         union ibs_op_ctl *op_ctl = (union ibs_op_ctl *)data->data;
197         __u64 *rip = (__u64 *)op_ctl + 1;
198         union ibs_op_data *op_data = (union ibs_op_data *)(rip + 1);
199         union ibs_op_data3 *op_data3 = (union ibs_op_data3 *)(rip + 3);
200
201         pr_ibs_op_ctl(*op_ctl);
202         if (!op_data->op_rip_invalid)
203                 printf("IbsOpRip:\t%016llx\n", *rip);
204         pr_ibs_op_data(*op_data);
205         /*
206          * Erratum #1293: ignore op_data2 if DcMissNoMabAlloc or SwPf are set
207          */
208         if (!(cpu_family == 0x19 && cpu_model < 0x10 &&
209               (op_data3->dc_miss_no_mab_alloc || op_data3->sw_pf)))
210                 pr_ibs_op_data2(*(union ibs_op_data2 *)(rip + 2));
211         pr_ibs_op_data3(*op_data3);
212         if (op_data3->dc_lin_addr_valid)
213                 printf("IbsDCLinAd:\t%016llx\n", *(rip + 4));
214         if (op_data3->dc_phy_addr_valid)
215                 printf("IbsDCPhysAd:\t%016llx\n", *(rip + 5));
216         if (op_data->op_brn_ret && *(rip + 6))
217                 printf("IbsBrTarget:\t%016llx\n", *(rip + 6));
218 }
219
220 /*
221  * IBS Fetch MSRs always saved, in order, are:
222  * IBS_FETCH_CTL, IBS_FETCH_LINADDR, IBS_FETCH_PHYSADDR, IC_IBS_EXTD_CTL
223  */
224 static void amd_dump_ibs_fetch(struct perf_sample *sample)
225 {
226         struct perf_ibs_data *data = sample->raw_data;
227         union ibs_fetch_ctl *fetch_ctl = (union ibs_fetch_ctl *)data->data;
228         __u64 *addr = (__u64 *)fetch_ctl + 1;
229         union ic_ibs_extd_ctl *extd_ctl = (union ic_ibs_extd_ctl *)addr + 2;
230
231         pr_ibs_fetch_ctl(*fetch_ctl);
232         printf("IbsFetchLinAd:\t%016llx\n", *addr++);
233         if (fetch_ctl->phy_addr_valid)
234                 printf("IbsFetchPhysAd:\t%016llx\n", *addr);
235         pr_ic_ibs_extd_ctl(*extd_ctl);
236 }
237
238 /*
239  * Test for enable and valid bits in captured control MSRs.
240  */
241 static bool is_valid_ibs_fetch_sample(struct perf_sample *sample)
242 {
243         struct perf_ibs_data *data = sample->raw_data;
244         union ibs_fetch_ctl *fetch_ctl = (union ibs_fetch_ctl *)data->data;
245
246         if (fetch_ctl->fetch_en && fetch_ctl->fetch_val)
247                 return true;
248
249         return false;
250 }
251
252 static bool is_valid_ibs_op_sample(struct perf_sample *sample)
253 {
254         struct perf_ibs_data *data = sample->raw_data;
255         union ibs_op_ctl *op_ctl = (union ibs_op_ctl *)data->data;
256
257         if (op_ctl->op_en && op_ctl->op_val)
258                 return true;
259
260         return false;
261 }
262
263 /* AMD vendor specific raw sample function. Check for PERF_RECORD_SAMPLE events
264  * and if the event was triggered by IBS, display its raw data with decoded text.
265  * The function is only invoked when the dump flag -D is set.
266  */
267 void evlist__amd_sample_raw(struct evlist *evlist, union perf_event *event,
268                             struct perf_sample *sample)
269 {
270         struct evsel *evsel;
271
272         if (event->header.type != PERF_RECORD_SAMPLE || !sample->raw_size)
273                 return;
274
275         evsel = evlist__event2evsel(evlist, event);
276         if (!evsel)
277                 return;
278
279         if (evsel->core.attr.type == ibs_fetch_type) {
280                 if (!is_valid_ibs_fetch_sample(sample)) {
281                         pr_debug("Invalid raw IBS Fetch MSR data encountered\n");
282                         return;
283                 }
284                 amd_dump_ibs_fetch(sample);
285         } else if (evsel->core.attr.type == ibs_op_type) {
286                 if (!is_valid_ibs_op_sample(sample)) {
287                         pr_debug("Invalid raw IBS Op MSR data encountered\n");
288                         return;
289                 }
290                 amd_dump_ibs_op(sample);
291         }
292 }
293
294 static void parse_cpuid(struct perf_env *env)
295 {
296         const char *cpuid;
297         int ret;
298
299         cpuid = perf_env__cpuid(env);
300         /*
301          * cpuid = "AuthenticAMD,family,model,stepping"
302          */
303         ret = sscanf(cpuid, "%*[^,],%u,%u", &cpu_family, &cpu_model);
304         if (ret != 2)
305                 pr_debug("problem parsing cpuid\n");
306 }
307
308 /*
309  * Find and assign the type number used for ibs_op or ibs_fetch samples.
310  * Device names can be large - we are only interested in the first 9 characters,
311  * to match "ibs_fetch".
312  */
313 bool evlist__has_amd_ibs(struct evlist *evlist)
314 {
315         struct perf_env *env = evlist->env;
316         int ret, nr_pmu_mappings = perf_env__nr_pmu_mappings(env);
317         const char *pmu_mapping = perf_env__pmu_mappings(env);
318         char name[sizeof("ibs_fetch")];
319         u32 type;
320
321         while (nr_pmu_mappings--) {
322                 ret = sscanf(pmu_mapping, "%u:%9s", &type, name);
323                 if (ret == 2) {
324                         if (strstarts(name, "ibs_op"))
325                                 ibs_op_type = type;
326                         else if (strstarts(name, "ibs_fetch"))
327                                 ibs_fetch_type = type;
328                 }
329                 pmu_mapping += strlen(pmu_mapping) + 1 /* '\0' */;
330         }
331
332         if (perf_env__find_pmu_cap(env, "ibs_op", "zen4_ibs_extensions"))
333                 zen4_ibs_extensions = 1;
334
335         if (ibs_fetch_type || ibs_op_type) {
336                 if (!cpu_family)
337                         parse_cpuid(env);
338                 return true;
339         }
340
341         return false;
342 }
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