Re: [PATCH v7 5/7] perf tool: Add support for HiSilicon PCIe Tune and Trace device driver

On 07/04/2022 13:58, Yicong Yang wrote:

From: Qi Liu liuqi115@huawei.com

'perf record' and 'perf report --dump-raw-trace' supported in this patch.

Example usage:

Output will contain raw PTT data and its textual representation, such as:

0 0 0x5810 [0x30]: PERF_RECORD_AUXTRACE size: 0x400000 offset: 0 ref: 0xa5d50c725 idx: 0 tid: -1 cpu: 0 . . ... HISI PTT data: size 4194304 bytes . 00000000: 00 00 00 00 Prefix . 00000004: 08 20 00 60 Header DW0 . 00000008: ff 02 00 01 Header DW1 . 0000000c: 20 08 00 00 Header DW2 . 00000010: 10 e7 44 ab Header DW3 . 00000014: 2a a8 1e 01 Time . 00000020: 00 00 00 00 Prefix . 00000024: 01 00 00 60 Header DW0 . 00000028: 0f 1e 00 01 Header DW1 . 0000002c: 04 00 00 00 Header DW2 . 00000030: 40 00 81 02 Header DW3 . 00000034: ee 02 00 00 Time ....

Signed-off-by: Qi Liu liuqi115@huawei.com Signed-off-by: Yicong Yang yangyicong@hisilicon.com

---

tools/perf/arch/arm/util/auxtrace.c | 76 +++++- tools/perf/arch/arm/util/pmu.c | 3 + tools/perf/arch/arm64/util/Build | 2 +- tools/perf/arch/arm64/util/hisi_ptt.c | 195 ++++++++++++++++ tools/perf/util/Build | 2 + tools/perf/util/auxtrace.c | 4 + tools/perf/util/auxtrace.h | 1 + tools/perf/util/hisi-ptt-decoder/Build | 1 + .../hisi-ptt-decoder/hisi-ptt-pkt-decoder.c | 170 ++++++++++++++ .../hisi-ptt-decoder/hisi-ptt-pkt-decoder.h | 28 +++ tools/perf/util/hisi_ptt.c | 218 ++++++++++++++++++ tools/perf/util/hisi_ptt.h | 28 +++ 12 files changed, 724 insertions(+), 4 deletions(-) create mode 100644 tools/perf/arch/arm64/util/hisi_ptt.c create mode 100644 tools/perf/util/hisi-ptt-decoder/Build create mode 100644 tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.c create mode 100644 tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.h create mode 100644 tools/perf/util/hisi_ptt.c create mode 100644 tools/perf/util/hisi_ptt.h

diff --git a/tools/perf/arch/arm/util/auxtrace.c b/tools/perf/arch/arm/util/auxtrace.c index 5fc6a2a3dbc5..393f5757c039 100644 --- a/tools/perf/arch/arm/util/auxtrace.c +++ b/tools/perf/arch/arm/util/auxtrace.c @@ -4,9 +4,11 @@

• Author: Mathieu Poirier mathieu.poirier@linaro.org

*/ +#include <dirent.h> #include <stdbool.h> #include <linux/coresight-pmu.h> #include <linux/zalloc.h> +#include <api/fs/fs.h> #include "../../../util/auxtrace.h" #include "../../../util/debug.h" @@ -14,6 +16,7 @@ #include "../../../util/pmu.h" #include "cs-etm.h" #include "arm-spe.h" +#include "hisi_ptt.h" static struct perf_pmu **find_all_arm_spe_pmus(int *nr_spes, int *err) { @@ -50,6 +53,58 @@ static struct perf_pmu **find_all_arm_spe_pmus(int *nr_spes, int *err) return arm_spe_pmus; } +static struct perf_pmu **find_all_hisi_ptt_pmus(int *nr_ptts, int *err) +{

• const char *sysfs = sysfs__mountpoint();
• struct perf_pmu **hisi_ptt_pmus = NULL;
• struct dirent *dent;
• char path[PATH_MAX];
• DIR *dir = NULL;
• int idx = 0;
• snprintf(path, PATH_MAX, "%s" EVENT_SOURCE_DEVICE_PATH, sysfs);
• dir = opendir(path);
• if (!dir) {

• pr_err("can't read directory '%s'\n", EVENT_SOURCE_DEVICE_PATH);
  

• *err = -EINVAL;
  

• goto out;
  

• }
• while ((dent = readdir(dir))) {

• if (strstr(dent->d_name, HISI_PTT_PMU_NAME))
  

• 	(*nr_ptts)++;
  

• }
• if (!(*nr_ptts))

• goto out;
  

• hisi_ptt_pmus = zalloc(sizeof(struct perf_pmu *) * (*nr_ptts));
• if (!hisi_ptt_pmus) {

• pr_err("hisi_ptt alloc failed\n");
  

• *err = -ENOMEM;
  

• goto out;
  

• }
• rewinddir(dir);
• while ((dent = readdir(dir))) {

• if (strstr(dent->d_name, HISI_PTT_PMU_NAME) && idx < (*nr_ptts)) {
  

• 	hisi_ptt_pmus[idx] = perf_pmu__find(dent->d_name);
  

• 	if (hisi_ptt_pmus[idx]) {
  

• 		pr_debug2("%s %d: hisi_ptt_pmu %d type %d name %s\n",
  

• 			__func__, __LINE__, idx,
  

• 			hisi_ptt_pmus[idx]->type,
  

• 			hisi_ptt_pmus[idx]->name);
  

• 			idx++;
  

• 	}
  

• }
  

• }

+out:

• closedir(dir);
• return hisi_ptt_pmus;

+}

struct auxtrace_record *auxtrace_record__init(struct evlist *evlist, int *err) { @@ -57,8 +112,12 @@ struct auxtrace_record struct evsel *evsel; bool found_etm = false; struct perf_pmu *found_spe = NULL;

• struct perf_pmu *found_ptt = NULL; struct perf_pmu **arm_spe_pmus = NULL;
• struct perf_pmu **hisi_ptt_pmus = NULL;
• int nr_spes = 0;
• int nr_ptts = 0; int i = 0;

if (!evlist) @@ -66,13 +125,14 @@ struct auxtrace_record cs_etm_pmu = perf_pmu__find(CORESIGHT_ETM_PMU_NAME); arm_spe_pmus = find_all_arm_spe_pmus(&nr_spes, err);

• hisi_ptt_pmus = find_all_hisi_ptt_pmus(&nr_ptts, err);

evlist__for_each_entry(evlist, evsel) { if (cs_etm_pmu && evsel->core.attr.type == cs_etm_pmu->type) found_etm = true;

• if (!nr_spes || found_spe)
  

• if ((!nr_spes || found_spe) && (!nr_ptts || found_ptt))
  continue;
  

for (i = 0; i < nr_spes; i++) { @@ -81,11 +141,18 @@ struct auxtrace_record break; } }

• for (i = 0; i < nr_ptts; i++) {
  

• 	if (evsel->core.attr.type == hisi_ptt_pmus[i]->type) {
  

• 		found_ptt = hisi_ptt_pmus[i];
  

• 		break;
  

• 	}
  

• }
  

  } free(arm_spe_pmus);

• if (found_etm && found_spe) {

• pr_err("Concurrent ARM Coresight ETM and SPE operation not currently supported\n");
  

• if (found_etm && found_spe && found_ptt) {

• pr_err("Concurrent ARM Coresight ETM ,SPE and HiSilicon PCIe Trace operation not currently supported\n");
  

Hi Yicong,

Is that actually a limitation? I don't see why they couldn't work concurrently.

*err = -EOPNOTSUPP;
return NULL;

} @@ -96,6 +163,9 @@ struct auxtrace_record #if defined(__aarch64__) if (found_spe) return arm_spe_recording_init(err, found_spe);

• if (found_ptt)

• return hisi_ptt_recording_init(err, found_ptt);
  

#endif /* diff --git a/tools/perf/arch/arm/util/pmu.c b/tools/perf/arch/arm/util/pmu.c index b8b23b9dc598..89a3cedb4557 100644 --- a/tools/perf/arch/arm/util/pmu.c +++ b/tools/perf/arch/arm/util/pmu.c @@ -10,6 +10,7 @@ #include <linux/string.h> #include "arm-spe.h" +#include "hisi_ptt.h" #include "../../../util/pmu.h" struct perf_event_attr @@ -22,6 +23,8 @@ struct perf_event_attr #if defined(__aarch64__) } else if (strstarts(pmu->name, ARM_SPE_PMU_NAME)) { return arm_spe_pmu_default_config(pmu);

• } else if (strstarts(pmu->name, HISI_PTT_PMU_NAME)) {

• pmu->selectable = true;
  

#endif } diff --git a/tools/perf/arch/arm64/util/Build b/tools/perf/arch/arm64/util/Build index 9fcb4e68add9..8b7fd1dc9f37 100644 --- a/tools/perf/arch/arm64/util/Build +++ b/tools/perf/arch/arm64/util/Build @@ -11,4 +11,4 @@ perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o perf-$(CONFIG_AUXTRACE) += ../../arm/util/pmu.o \ ../../arm/util/auxtrace.o \ ../../arm/util/cs-etm.o \

• 	      arm-spe.o mem-events.o
  

• 	      arm-spe.o mem-events.o hisi_ptt.o
  

diff --git a/tools/perf/arch/arm64/util/hisi_ptt.c b/tools/perf/arch/arm64/util/hisi_ptt.c new file mode 100644 index 000000000000..de3a3523ffd5 --- /dev/null +++ b/tools/perf/arch/arm64/util/hisi_ptt.c @@ -0,0 +1,195 @@ +// SPDX-License-Identifier: GPL-2.0 +/*

• • HiSilicon PCIe Trace and Tuning (PTT) support
• • Copyright (c) 2022 HiSilicon Technologies Co., Ltd.
• */

+#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/bitops.h> +#include <linux/log2.h> +#include <linux/zalloc.h> +#include <time.h>

+#include <internal/lib.h> // page_size +#include "../../../util/auxtrace.h" +#include "../../../util/cpumap.h" +#include "../../../util/debug.h" +#include "../../../util/event.h" +#include "../../../util/evlist.h" +#include "../../../util/evsel.h" +#include "../../../util/hisi_ptt.h" +#include "../../../util/pmu.h" +#include "../../../util/record.h" +#include "../../../util/session.h" +#include "../../../util/tsc.h"

+#define DEFAULT_PAGE_SIZE 1024 +#define KiB(x) ((x) * DEFAULT_PAGE_SIZE) +#define MiB(x) ((x) * DEFAULT_PAGE_SIZE * DEFAULT_PAGE_SIZE)

+struct hisi_ptt_recording {

• struct auxtrace_record itr;
• struct perf_pmu *hisi_ptt_pmu;
• struct evlist *evlist;

+};

+static size_t +hisi_ptt_info_priv_size(struct auxtrace_record *itr __maybe_unused,

• 	struct evlist *evlist __maybe_unused)
  

+{

• return HISI_PTT_AUXTRACE_PRIV_SIZE;

+}

+static int hisi_ptt_info_fill(struct auxtrace_record *itr,

• 	      struct perf_session *session,
  

• 	      struct perf_record_auxtrace_info *auxtrace_info,
  

• 	      size_t priv_size)
  

+{

• struct hisi_ptt_recording *pttr =

• 	container_of(itr, struct hisi_ptt_recording, itr);
  

• struct perf_pmu *hisi_ptt_pmu = pttr->hisi_ptt_pmu;
• if (priv_size != HISI_PTT_AUXTRACE_PRIV_SIZE)

• return -EINVAL;
  

• if (!session->evlist->core.nr_mmaps)

• return -EINVAL;
  

• auxtrace_info->type = PERF_AUXTRACE_HISI_PTT;
• auxtrace_info->priv[HISI_PTT_PMU_TYPE] = hisi_ptt_pmu->type;
• return 0;

+}

+static int hisi_ptt_set_auxtrace_mmap_page(struct record_opts *opts) +{

• bool privileged = perf_event_paranoid_check(-1);
• if (!opts->full_auxtrace)

• return 0;
  

• if (opts->full_auxtrace && !opts->auxtrace_mmap_pages) {

• if (privileged) {
  

• 	opts->auxtrace_mmap_pages = MiB(16) / page_size;
  

• } else {
  

• 	opts->auxtrace_mmap_pages = KiB(128) / page_size;
  

• 	if (opts->mmap_pages == UINT_MAX)
  

• 		opts->mmap_pages = KiB(256) / page_size;
  

• }
  

• }
• /* Validate auxtrace_mmap_pages */
• if (opts->auxtrace_mmap_pages) {

• size_t sz = opts->auxtrace_mmap_pages * (size_t)page_size;
  

• size_t min_sz = KiB(8);
  

• if (sz < min_sz || !is_power_of_2(sz)) {
  

• 	pr_err("Invalid mmap size for HISI PTT: must be at least %zuKiB and a power of 2\n",
  

• 	       min_sz / DEFAULT_PAGE_SIZE);
  

• 	return -EINVAL;
  

• }
  

• }
• return 0;

+}

+static int hisi_ptt_recording_options(struct auxtrace_record *itr,

• 		      struct evlist *evlist,
  

• 		      struct record_opts *opts)
  

+{

• struct hisi_ptt_recording *pttr =

• 	container_of(itr, struct hisi_ptt_recording, itr);
  

• struct perf_pmu *hisi_ptt_pmu = pttr->hisi_ptt_pmu;
• struct perf_cpu_map *cpus = evlist->core.cpus;
• struct evsel *evsel, *hisi_ptt_evsel = NULL;
• struct evsel *tracking_evsel;
• int err;
• pttr->evlist = evlist;
• evlist__for_each_entry(evlist, evsel) {

• if (evsel->core.attr.type == hisi_ptt_pmu->type) {
  

• 	if (hisi_ptt_evsel) {
  

• 		pr_err("There may be only one " HISI_PTT_PMU_NAME "x event\n");
  

• 		return -EINVAL;
  

• 	}
  

• 	evsel->core.attr.freq = 0;
  

• 	evsel->core.attr.sample_period = 1;
  

• 	hisi_ptt_evsel = evsel;
  

• 	opts->full_auxtrace = true;
  

• }
  

• }
• err = hisi_ptt_set_auxtrace_mmap_page(opts);
• if (err)

• return err;
  

• /*

• * To obtain the auxtrace buffer file descriptor, the auxtrace event
  

• * must come first.
  

• */
  

• evlist__to_front(evlist, hisi_ptt_evsel);
• if (!perf_cpu_map__empty(cpus)) {

• evsel__set_sample_bit(hisi_ptt_evsel, TIME);
  

• evsel__set_sample_bit(hisi_ptt_evsel, CPU);
  

• }

Similar to Leo's comment: CPU isn't required if it's uncore, and if TIME is useful then add it regardless of whether the event is opened per-cpu or on a task.

• /* Add dummy event to keep tracking */
• err = parse_events(evlist, "dummy:u", NULL);
• if (err)

• return err;
  

• tracking_evsel = evlist__last(evlist);
• evlist__set_tracking_event(evlist, tracking_evsel);
• tracking_evsel->core.attr.freq = 0;
• tracking_evsel->core.attr.sample_period = 1;
• if (!perf_cpu_map__empty(cpus))

• evsel__set_sample_bit(tracking_evsel, TIME);
  

Same comment as above.

• return 0;

+}

+static u64 hisi_ptt_reference(struct auxtrace_record *itr __maybe_unused) +{

• return rdtsc();

+}

+static void hisi_ptt_recording_free(struct auxtrace_record *itr) +{

• struct hisi_ptt_recording *pttr =

• 	container_of(itr, struct hisi_ptt_recording, itr);
  

• free(pttr);

+}

+struct auxtrace_record *hisi_ptt_recording_init(int *err,

• 				struct perf_pmu *hisi_ptt_pmu)
  

+{

• struct hisi_ptt_recording *pttr;
• if (!hisi_ptt_pmu) {

• *err = -ENODEV;
  

• return NULL;
  

• }
• pttr = zalloc(sizeof(struct hisi_ptt_recording));
• if (!pttr) {

• *err = -ENOMEM;
  

• return NULL;
  

• }
• pttr->hisi_ptt_pmu = hisi_ptt_pmu;
• pttr->itr.pmu = hisi_ptt_pmu;
• pttr->itr.recording_options = hisi_ptt_recording_options;
• pttr->itr.info_priv_size = hisi_ptt_info_priv_size;
• pttr->itr.info_fill = hisi_ptt_info_fill;
• pttr->itr.free = hisi_ptt_recording_free;
• pttr->itr.reference = hisi_ptt_reference;
• pttr->itr.read_finish = auxtrace_record__read_finish;
• pttr->itr.alignment = 0;
• *err = 0;
• return &pttr->itr;

+} diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 9a7209a99e16..95d2d76c52da 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -116,6 +116,8 @@ perf-$(CONFIG_AUXTRACE) += intel-pt.o perf-$(CONFIG_AUXTRACE) += intel-bts.o perf-$(CONFIG_AUXTRACE) += arm-spe.o perf-$(CONFIG_AUXTRACE) += arm-spe-decoder/ +perf-$(CONFIG_AUXTRACE) += hisi_ptt.o +perf-$(CONFIG_AUXTRACE) += hisi-ptt-decoder/ perf-$(CONFIG_AUXTRACE) += s390-cpumsf.o ifdef CONFIG_LIBOPENCSD diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index df1c5bbbaa0d..f4841ebaf314 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -51,6 +51,7 @@ #include "intel-pt.h" #include "intel-bts.h" #include "arm-spe.h" +#include "hisi_ptt.h" #include "s390-cpumsf.h" #include "util/mmap.h" @@ -1281,6 +1282,9 @@ int perf_event__process_auxtrace_info(struct perf_session *session, case PERF_AUXTRACE_S390_CPUMSF: err = s390_cpumsf_process_auxtrace_info(event, session); break;

• case PERF_AUXTRACE_HISI_PTT:

• err = hisi_ptt_process_auxtrace_info(event, session);
  

• break;
  

  case PERF_AUXTRACE_UNKNOWN: default: return -EINVAL;

diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index dc38b6f57232..3858c5752ead 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -48,6 +48,7 @@ enum auxtrace_type { PERF_AUXTRACE_CS_ETM, PERF_AUXTRACE_ARM_SPE, PERF_AUXTRACE_S390_CPUMSF,

• PERF_AUXTRACE_HISI_PTT,

}; enum itrace_period_type { diff --git a/tools/perf/util/hisi-ptt-decoder/Build b/tools/perf/util/hisi-ptt-decoder/Build new file mode 100644 index 000000000000..db3db8b75033 --- /dev/null +++ b/tools/perf/util/hisi-ptt-decoder/Build @@ -0,0 +1 @@ +perf-$(CONFIG_AUXTRACE) += hisi-ptt-pkt-decoder.o diff --git a/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.c b/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.c new file mode 100644 index 000000000000..3fb7a6949209 --- /dev/null +++ b/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.c @@ -0,0 +1,170 @@ +// SPDX-License-Identifier: GPL-2.0 +/*

• • HiSilicon PCIe Trace and Tuning (PTT) support
• • Copyright (c) 2022 HiSilicon Technologies Co., Ltd.
• */

+#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <endian.h> +#include <byteswap.h> +#include <linux/bitops.h> +#include <stdarg.h>

+#include "../color.h" +#include "hisi-ptt-pkt-decoder.h"

+/*

• • For 8DW format, the bit[31:11] of DW0 is always 0x1fffff, which can be
• • used to distinguish the data format.
• • 8DW format is like:
• • bits [ 31:11 ][ 10:0 ]

• •    |---------------------------------------|-------------------|
    

• • DW0 [ 0x1fffff ][ Reserved (0x7ff) ]
• • DW1 [ Prefix ]
• • DW2 [ Header DW0 ]
• • DW3 [ Header DW1 ]
• • DW4 [ Header DW2 ]
• • DW5 [ Header DW3 ]
• • DW6 [ Reserved (0x0) ]
• • DW7 [ Time ]
• • 4DW format is like:
• • bits [31:30] [ 29:25 ][24][23][22][21][ 20:11 ][ 10:0 ]

• •    |-----|---------|---|---|---|---|-------------|-------------|
    

• • DW0 [ Fmt ][ Type ][T9][T8][TH][SO][ Length ][ Time ]
• • DW1 [ Header DW1 ]
• • DW2 [ Header DW2 ]
• • DW3 [ Header DW3 ]
• */

+enum hisi_ptt_8dw_pkt_field_type {

• HISI_PTT_8DW_PREFIX,
• HISI_PTT_8DW_HEAD0,
• HISI_PTT_8DW_HEAD1,
• HISI_PTT_8DW_HEAD2,
• HISI_PTT_8DW_HEAD3,
• HISI_PTT_8DW_TIME,
• HISI_PTT_8DW_TYPE_MAX

+};

+enum hisi_ptt_4dw_pkt_field_type {

• HISI_PTT_4DW_HEAD1,
• HISI_PTT_4DW_HEAD2,
• HISI_PTT_4DW_HEAD3,
• HISI_PTT_4DW_TYPE_MAX

+};

+static const char * const hisi_ptt_8dw_pkt_field_name[] = {

• [HISI_PTT_8DW_PREFIX] = "Prefix",
• [HISI_PTT_8DW_HEAD0] = "Header DW0",
• [HISI_PTT_8DW_HEAD1] = "Header DW1",
• [HISI_PTT_8DW_HEAD2] = "Header DW2",
• [HISI_PTT_8DW_HEAD3] = "Header DW3",
• [HISI_PTT_8DW_TIME] = "Time",

+};

+static const char * const hisi_ptt_4dw_pkt_field_name[] = {

• [HISI_PTT_4DW_HEAD1] = "Header DW1",
• [HISI_PTT_4DW_HEAD2] = "Header DW2",
• [HISI_PTT_4DW_HEAD3] = "Header DW3",

+};

+/* offset of each member is determined by format of 8dw packet. */ +static uint32_t hisi_ptt_8dw_pkt_field_offset[] = {

• [HISI_PTT_8DW_PREFIX] = 4,
• [HISI_PTT_8DW_HEAD0] = 4,
• [HISI_PTT_8DW_HEAD1] = 4,
• [HISI_PTT_8DW_HEAD2] = 4,
• [HISI_PTT_8DW_HEAD3] = 4,
• [HISI_PTT_8DW_TIME] = 8,

+};

+union hisi_ptt_4dw {

• struct {

• uint32_t format : 2;
  

• uint32_t type : 5;
  

• uint32_t t9 : 1;
  

• uint32_t t8 : 1;
  

• uint32_t th : 1;
  

• uint32_t so : 1;
  

• uint32_t len : 10;
  

• uint32_t time : 11;
  

• };
• uint32_t value;

+};

+static void hisi_ptt_print_pkt(const unsigned char *buf, int *pos, const char *desc) +{

• const char *color = PERF_COLOR_BLUE;
• int field_len = sizeof(uint32_t);
• int i;
• printf(".");
• color_fprintf(stdout, color, " %08x: ", *pos);
• for (i = 0; i < field_len; i++)

• color_fprintf(stdout, color, "%02x ", buf[i]);
  

• for (i = 0; i < HISI_PTT_MAX_SPACE_LEN; i++)

• color_fprintf(stdout, color, "   ");
  

• color_fprintf(stdout, color, " %s\n", desc);
• *pos += field_len;

+}

+static int hisi_ptt_8dw_kpt_desc(const unsigned char *buf, int pos) +{

• int i;
• for (i = HISI_PTT_8DW_PREFIX; i < HISI_PTT_8DW_TYPE_MAX; i++) {

• buf += hisi_ptt_8dw_pkt_field_offset[i];
  

• hisi_ptt_print_pkt(buf, &pos, hisi_ptt_8dw_pkt_field_name[i]);
  

• }
• return HISI_PTT_8DW_PKT_SIZE;

+}

+static void hisi_ptt_4dw_print_dw0(const unsigned char *buf, int *pos) +{

• const char *color = PERF_COLOR_BLUE;
• int field_len = sizeof(uint32_t);
• union hisi_ptt_4dw dw0;
• int i;
• dw0.value = *(uint32_t *)buf;
• printf(".");
• color_fprintf(stdout, color, " %08x: ", *pos);
• for (i = 0; i < field_len; i++)

• color_fprintf(stdout, color, "%02x ", buf[i]);
  

• for (i = 0; i < HISI_PTT_MAX_SPACE_LEN; i++)

• color_fprintf(stdout, color, "   ");
  

• color_fprintf(stdout, color,

•       "  %s %x %s %x %s %x %s %x %s %x %s %x %s %x %s %x\n",
  

•       "Format", dw0.format, "Type", dw0.type, "T9", dw0.t9,
  

•       "T8", dw0.t8, "TH", dw0.th, "SO", dw0.so, "Length",
  

•       dw0.len, "Time", dw0.time);
  

• *pos += field_len;

+}

+static int hisi_ptt_4dw_kpt_desc(const unsigned char *buf, int pos) +{

• int i;
• hisi_ptt_4dw_print_dw0(buf, &pos);
• for (i = HISI_PTT_4DW_HEAD1; i < HISI_PTT_4DW_TYPE_MAX; i++) {

• buf += sizeof(uint32_t);
  

• hisi_ptt_print_pkt(buf, &pos, hisi_ptt_4dw_pkt_field_name[i]);
  

• }
• return HISI_PTT_4DW_PKT_SIZE;

+}

+int hisi_ptt_pkt_desc(const unsigned char *buf, int pos, enum hisi_ptt_pkt_type type) +{

• if (type == HISI_PTT_8DW_PKT)

• return hisi_ptt_8dw_kpt_desc(buf, pos);
  

• return hisi_ptt_4dw_kpt_desc(buf, pos);

+} diff --git a/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.h b/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.h new file mode 100644 index 000000000000..20c51f230cac --- /dev/null +++ b/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*

• • HiSilicon PCIe Trace and Tuning (PTT) support
• • Copyright (c) 2022 HiSilicon Technologies Co., Ltd.
• */

+#ifndef INCLUDE__HISI_PTT_PKT_DECODER_H__ +#define INCLUDE__HISI_PTT_PKT_DECODER_H__

+#include <stddef.h> +#include <stdint.h>

+#define HISI_PTT_PKT_DESC_MAX 256 +#define HISI_PTT_NEED_MORE_BYTES -1 +#define HISI_PTT_8DW_CHECK_MASK GENMASK(31, 11) +#define HISI_PTT_IS_8DW_PKT GENMASK(31, 11) +#define HISI_PTT_8DW_PKT_SIZE 32 +#define HISI_PTT_4DW_PKT_SIZE 16 +#define HISI_PTT_MAX_SPACE_LEN 10

+enum hisi_ptt_pkt_type {

• HISI_PTT_4DW_PKT,
• HISI_PTT_8DW_PKT,

+};

+int hisi_ptt_pkt_desc(const unsigned char *buf, int pos, enum hisi_ptt_pkt_type type);

+#endif diff --git a/tools/perf/util/hisi_ptt.c b/tools/perf/util/hisi_ptt.c new file mode 100644 index 000000000000..e2934214763c --- /dev/null +++ b/tools/perf/util/hisi_ptt.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: GPL-2.0 +/*

• • HiSilicon PCIe Trace and Tuning (PTT) support
• • Copyright (c) 2022 HiSilicon Technologies Co., Ltd.
• */

+#include <byteswap.h> +#include <endian.h> +#include <errno.h> +#include <inttypes.h> +#include <linux/bitops.h> +#include <linux/kernel.h> +#include <linux/log2.h> +#include <linux/types.h> +#include <linux/zalloc.h> +#include <stdlib.h> +#include <unistd.h>

+#include "auxtrace.h" +#include "color.h" +#include "debug.h" +#include "evlist.h" +#include "evsel.h" +#include "hisi_ptt.h" +#include "hisi-ptt-decoder/hisi-ptt-pkt-decoder.h" +#include "machine.h" +#include "session.h" +#include "symbol.h" +#include "tool.h" +#include "util/synthetic-events.h"

+struct hisi_ptt {

• struct auxtrace auxtrace;
• struct auxtrace_queues queues;
• u32 auxtrace_type;
• struct perf_session *session;
• struct machine *machine;
• u32 pmu_type;

+};

+struct hisi_ptt_queue {

• struct hisi_ptt *ptt;
• struct auxtrace_buffer *buffer;

+};

+static enum hisi_ptt_pkt_type hisi_ptt_check_packet_type(unsigned char *buf) +{

• uint32_t head = *(uint32_t *)buf;
• if ((HISI_PTT_8DW_CHECK_MASK & head) == HISI_PTT_IS_8DW_PKT)

• return HISI_PTT_8DW_PKT;
  

• return HISI_PTT_4DW_PKT;

+}

+static void hisi_ptt_dump(struct hisi_ptt *ptt __maybe_unused,

• 	  unsigned char *buf, size_t len)
  

+{

• const char *color = PERF_COLOR_BLUE;
• enum hisi_ptt_pkt_type type;
• size_t pos = 0;
• int pkt_len;
• color_fprintf(stdout, color, ". ... HISI PTT data: size %zu bytes\n",

•       len);
  

• type = hisi_ptt_check_packet_type(buf);
• while (len) {

• pkt_len = hisi_ptt_pkt_desc(buf, pos, type);
  

• if (!pkt_len)
  

• 	color_fprintf(stdout, color, " Bad packet!\n");
  

• pos += pkt_len;
  

• buf += pkt_len;
  

• len -= pkt_len;
  

• }

+}

+static void hisi_ptt_dump_event(struct hisi_ptt *ptt, unsigned char *buf,

• 		size_t len)
  

+{

• printf(".\n");
• hisi_ptt_dump(ptt, buf, len);

+}

+static int hisi_ptt_process_event(struct perf_session *session __maybe_unused,

• 		  union perf_event *event __maybe_unused,
  

• 		  struct perf_sample *sample __maybe_unused,
  

• 		  struct perf_tool *tool __maybe_unused)
  

+{

• return 0;

+}

+static int hisi_ptt_process_auxtrace_event(struct perf_session *session,

• 			   union perf_event *event,
  

• 			   struct perf_tool *tool __maybe_unused)
  

+{

• struct hisi_ptt *ptt = container_of(session->auxtrace, struct hisi_ptt,

• 			    auxtrace);
  

• struct auxtrace_buffer *buffer;
• off_t data_offset;
• int fd = perf_data__fd(session->data);
• int err;
• if (perf_data__is_pipe(session->data)) {

• data_offset = 0;
  

• } else {

• data_offset = lseek(fd, 0, SEEK_CUR);
  

• if (data_offset == -1)
  

• 	return -errno;
  

• }
• err = auxtrace_queues__add_event(&ptt->queues, session, event,

• 			 data_offset, &buffer);
  

• if (err)

• return err;
  

• if (dump_trace) {

• if (auxtrace_buffer__get_data(buffer, fd)) {
  

• 	hisi_ptt_dump_event(ptt, buffer->data, buffer->size);
  

• 	auxtrace_buffer__put_data(buffer);
  

• }
  

Technically auxtrace_queues aren't required here because they are more for supporting trace from multiple CPUs and sorting and re-ordering between them.

If this is new device is uncore and always from a single source you could just go straight to hisi_ptt_dump_event() with data_offset and size of the auxtrace event.

But I suppose it also doesn't hurt to use some of the existing framework like you have done.

• }
• return 0;

+}

+static int hisi_ptt_flush(struct perf_session *session __maybe_unused,

• 	  struct perf_tool *tool __maybe_unused)
  

+{

• return 0;

+}

+static void hisi_ptt_free_events(struct perf_session *session) +{

• struct hisi_ptt *ptt = container_of(session->auxtrace, struct hisi_ptt,

• 			    auxtrace);
  

• struct auxtrace_queues *queues = &ptt->queues;
• unsigned int i;
• for (i = 0; i < queues->nr_queues; i++) {

• free(queues->queue_array[i].priv);
  

• queues->queue_array[i].priv = NULL;
  

• }
• auxtrace_queues__free(queues);

+}

+static void hisi_ptt_free(struct perf_session *session) +{

• struct hisi_ptt *ptt = container_of(session->auxtrace, struct hisi_ptt,

• 			    auxtrace);
  

• hisi_ptt_free_events(session);
• session->auxtrace = NULL;
• free(ptt);

+}

+static bool hisi_ptt_evsel_is_auxtrace(struct perf_session *session,

• 		       struct evsel *evsel)
  

+{

• struct hisi_ptt *ptt = container_of(session->auxtrace, struct hisi_ptt, auxtrace);
• return evsel->core.attr.type == ptt->pmu_type;

+}

+static const char * const hisi_ptt_info_fmts[] = {

• [HISI_PTT_PMU_TYPE] = " PMU Type %" PRId64 "\n",

+};

+static void hisi_ptt_print_info(__u64 *arr) +{

• if (!dump_trace)

• return;
  

• fprintf(stdout, hisi_ptt_info_fmts[HISI_PTT_PMU_TYPE], arr[HISI_PTT_PMU_TYPE]);

+}

+int hisi_ptt_process_auxtrace_info(union perf_event *event,

• 		   struct perf_session *session)
  

+{

• struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
• struct hisi_ptt *ptt;
• int err;
• if (auxtrace_info->header.size < HISI_PTT_AUXTRACE_PRIV_SIZE +

• 		sizeof(struct perf_record_auxtrace_info))
  

• return -EINVAL;
  

• ptt = zalloc(sizeof(struct hisi_ptt));
• if (!ptt)

• return -ENOMEM;
  

• err = auxtrace_queues__init(&ptt->queues);
• if (err)

• goto err_free;
  

• ptt->session = session;
• ptt->machine = &session->machines.host; /* No kvm support */
• ptt->auxtrace_type = auxtrace_info->type;
• ptt->pmu_type = auxtrace_info->priv[HISI_PTT_PMU_TYPE];
• ptt->auxtrace.process_event = hisi_ptt_process_event;
• ptt->auxtrace.process_auxtrace_event = hisi_ptt_process_auxtrace_event;
• ptt->auxtrace.flush_events = hisi_ptt_flush;
• ptt->auxtrace.free_events = hisi_ptt_free_events;
• ptt->auxtrace.free = hisi_ptt_free;
• ptt->auxtrace.evsel_is_auxtrace = hisi_ptt_evsel_is_auxtrace;
• session->auxtrace = &ptt->auxtrace;
• hisi_ptt_print_info(&auxtrace_info->priv[0]);
• return 0;

+err_free:

• free(ptt);
• return err;

+} diff --git a/tools/perf/util/hisi_ptt.h b/tools/perf/util/hisi_ptt.h new file mode 100644 index 000000000000..c0b6cbde1221 --- /dev/null +++ b/tools/perf/util/hisi_ptt.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*

• • HiSilicon PCIe Trace and Tuning (PTT) support
• • Copyright (c) 2022 HiSilicon Technologies Co., Ltd.
• */

+#ifndef INCLUDE__PERF_HISI_PTT_H__ +#define INCLUDE__PERF_HISI_PTT_H__

+#define HISI_PTT_PMU_NAME "hisi_ptt" +enum {

• HISI_PTT_PMU_TYPE,
• HISI_PTT_PER_CPU_MMAPS,
• HISI_PTT_AUXTRACE_PRIV_MAX,

+};

+#define HISI_PTT_AUXTRACE_PRIV_SIZE (HISI_PTT_AUXTRACE_PRIV_MAX * sizeof(u64)) +union perf_event; +struct perf_session; +struct perf_pmu;

+struct auxtrace_record *hisi_ptt_recording_init(int *err,

• 				struct perf_pmu *hisi_ptt_pmu);
  

+int hisi_ptt_process_auxtrace_info(union perf_event *event,

• 		   struct perf_session *session);
  

+#endif