From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: acme@kernel.org
Cc: peterz@infradead.org, mingo@redhat.com,
alexander.shishkin@linux.intel.com, namhyung@kernel.org,
adrian.hunter@intel.com, mike.leach@arm.com,
suzuki.poulosi@arm.com, jolsa@redhat.com, kim.phillips@arm.com,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 06/10] perf tools: Add functionality to communicate with the openCSD decoder
Date: Wed, 17 Jan 2018 10:52:15 -0700 [thread overview]
Message-ID: <1516211539-5166-7-git-send-email-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <1516211539-5166-1-git-send-email-mathieu.poirier@linaro.org>
This patch adds functions to communicate with the openCSD trace decoder,
more specifically to access program memory, fetch trace packets and
reset the decoder.
Co-authored-by: Tor Jeremiassen <tor@ti.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 60 +++++++++++++++++++++++++
tools/perf/util/cs-etm-decoder/cs-etm-decoder.h | 9 ++++
2 files changed, 69 insertions(+)
diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
index 57b020b0b36f..1fb01849f1c7 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
@@ -45,6 +45,66 @@ struct cs_etm_decoder {
struct cs_etm_packet packet_buffer[MAX_BUFFER];
};
+static u32
+cs_etm_decoder__mem_access(const void *context,
+ const ocsd_vaddr_t address,
+ const ocsd_mem_space_acc_t mem_space __maybe_unused,
+ const u32 req_size,
+ u8 *buffer)
+{
+ struct cs_etm_decoder *decoder = (struct cs_etm_decoder *) context;
+
+ return decoder->mem_access(decoder->data,
+ address,
+ req_size,
+ buffer);
+}
+
+int cs_etm_decoder__add_mem_access_cb(struct cs_etm_decoder *decoder,
+ u64 start, u64 end,
+ cs_etm_mem_cb_type cb_func)
+{
+ decoder->mem_access = cb_func;
+
+ if (ocsd_dt_add_callback_mem_acc(decoder->dcd_tree, start, end,
+ OCSD_MEM_SPACE_ANY,
+ cs_etm_decoder__mem_access, decoder))
+ return -1;
+
+ return 0;
+}
+
+int cs_etm_decoder__reset(struct cs_etm_decoder *decoder)
+{
+ ocsd_datapath_resp_t dp_ret;
+
+ dp_ret = ocsd_dt_process_data(decoder->dcd_tree, OCSD_OP_RESET,
+ 0, 0, NULL, NULL);
+ if (OCSD_DATA_RESP_IS_FATAL(dp_ret))
+ return -1;
+
+ return 0;
+}
+
+int cs_etm_decoder__get_packet(struct cs_etm_decoder *decoder,
+ struct cs_etm_packet *packet)
+{
+ if (!decoder || !packet)
+ return -EINVAL;
+
+ /* Nothing to do, might as well just return */
+ if (decoder->packet_count == 0)
+ return 0;
+
+ *packet = decoder->packet_buffer[decoder->head];
+
+ decoder->head = (decoder->head + 1) & (MAX_BUFFER - 1);
+
+ decoder->packet_count--;
+
+ return 1;
+}
+
static void cs_etm_decoder__gen_etmv4_config(struct cs_etm_trace_params *params,
ocsd_etmv4_cfg *config)
{
diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
index a1e9b0ac5965..3d2e6205d186 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
@@ -93,4 +93,13 @@ cs_etm_decoder__new(int num_cpu,
void cs_etm_decoder__free(struct cs_etm_decoder *decoder);
+int cs_etm_decoder__add_mem_access_cb(struct cs_etm_decoder *decoder,
+ u64 start, u64 end,
+ cs_etm_mem_cb_type cb_func);
+
+int cs_etm_decoder__get_packet(struct cs_etm_decoder *decoder,
+ struct cs_etm_packet *packet);
+
+int cs_etm_decoder__reset(struct cs_etm_decoder *decoder);
+
#endif /* INCLUDE__CS_ETM_DECODER_H__ */
--
2.7.4
next prev parent reply other threads:[~2018-01-17 17:52 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-17 17:52 [PATCH v3 00/10] perf tools: Add support for CoreSight trace decoding Mathieu Poirier
2018-01-17 17:52 ` [PATCH v3 01/10] perf tools: Integrating the CoreSight decoding library Mathieu Poirier
2018-01-22 15:40 ` [PATCH] perf tools: Adding missing test file for libopencsd Mathieu Poirier
2018-01-22 16:34 ` Arnaldo Carvalho de Melo
2018-01-24 11:32 ` [tip:perf/core] perf tools: Integrating the CoreSight decoding library tip-bot for Mathieu Poirier
2018-01-28 21:16 ` tip-bot for Mathieu Poirier
2018-01-17 17:52 ` [PATCH v3 02/10] perf tools: Add initial entry point for decoder CoreSight traces Mathieu Poirier
2018-01-24 11:32 ` [tip:perf/core] " tip-bot for Mathieu Poirier
2018-01-28 21:16 ` tip-bot for Mathieu Poirier
2018-01-17 17:52 ` [PATCH v3 03/10] perf tools: Add processing of coresight metadata Mathieu Poirier
2018-01-24 11:33 ` [tip:perf/core] " tip-bot for Tor Jeremiassen
2018-01-28 21:17 ` tip-bot for Tor Jeremiassen
2018-01-17 17:52 ` [PATCH v3 04/10] perf tools: Add decoder mechanic to support dumping trace data Mathieu Poirier
2018-01-24 11:33 ` [tip:perf/core] " tip-bot for Mathieu Poirier
2018-01-28 21:17 ` tip-bot for Mathieu Poirier
2018-01-17 17:52 ` [PATCH v3 05/10] perf tools: Add support for decoding CoreSight " Mathieu Poirier
2018-01-24 11:34 ` [tip:perf/core] " tip-bot for Mathieu Poirier
2018-01-28 21:17 ` tip-bot for Mathieu Poirier
2018-01-17 17:52 ` Mathieu Poirier [this message]
2018-01-24 11:34 ` [tip:perf/core] perf tools: Add functionality to communicate with the openCSD decoder tip-bot for Mathieu Poirier
2018-01-28 21:18 ` tip-bot for Mathieu Poirier
2018-01-17 17:52 ` [PATCH v3 07/10] pert tools: Add queue management functionality Mathieu Poirier
2018-01-22 17:25 ` Robert Walker
2018-01-22 20:14 ` Mathieu Poirier
2018-01-24 11:34 ` [tip:perf/core] " tip-bot for Mathieu Poirier
2018-01-28 21:18 ` tip-bot for Mathieu Poirier
2018-01-17 17:52 ` [PATCH v3 08/10] perf tools: Add full support for CoreSight trace decoding Mathieu Poirier
2018-01-24 11:35 ` [tip:perf/core] " tip-bot for Mathieu Poirier
2018-01-28 21:19 ` tip-bot for Mathieu Poirier
2018-01-17 17:52 ` [PATCH v3 09/10] perf tools: Add mechanic to synthesise CoreSight trace packets Mathieu Poirier
2018-01-24 11:35 ` [tip:perf/core] " tip-bot for Mathieu Poirier
2018-01-28 21:19 ` tip-bot for Mathieu Poirier
2018-01-17 17:52 ` [PATCH v3 10/10] MAINTAINERS: Adding entry for CoreSight trace decoding Mathieu Poirier
2018-01-24 11:36 ` [tip:perf/core] " tip-bot for Tor Jeremiassen
2018-01-28 21:20 ` tip-bot for Tor Jeremiassen
2018-01-17 20:04 ` [PATCH v3 00/10] perf tools: Add support " Arnaldo Carvalho de Melo
2018-01-18 13:36 ` Arnaldo Carvalho de Melo
2018-01-19 15:01 ` Arnaldo Carvalho de Melo
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