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![Mike Leach](/assets/img/avatar_default.png)
OpenCSD version v0.14.0 adds in a new output element. This is represented by a new value in the generic element type enum, which must be added to the handling code in perf cs-etm-decoder to prevent build errors due to build options on the perf project. This element is not currently used by the perf decoder. Perf build feature test updated to require a minimum of 0.14.0 Tested on Linux 5.7-rc3. Signed-off-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200501143615.1180-1-mike.leach@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
756 lines
20 KiB
C
756 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright(C) 2015-2018 Linaro Limited.
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*
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* Author: Tor Jeremiassen <tor@ti.com>
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* Author: Mathieu Poirier <mathieu.poirier@linaro.org>
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*/
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#include <linux/err.h>
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#include <linux/list.h>
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#include <linux/zalloc.h>
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#include <stdlib.h>
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#include <opencsd/c_api/opencsd_c_api.h>
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#include <opencsd/etmv4/trc_pkt_types_etmv4.h>
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#include <opencsd/ocsd_if_types.h>
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#include "cs-etm.h"
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#include "cs-etm-decoder.h"
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#include "intlist.h"
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/* use raw logging */
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#ifdef CS_DEBUG_RAW
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#define CS_LOG_RAW_FRAMES
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#ifdef CS_RAW_PACKED
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#define CS_RAW_DEBUG_FLAGS (OCSD_DFRMTR_UNPACKED_RAW_OUT | \
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OCSD_DFRMTR_PACKED_RAW_OUT)
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#else
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#define CS_RAW_DEBUG_FLAGS (OCSD_DFRMTR_UNPACKED_RAW_OUT)
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#endif
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#endif
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struct cs_etm_decoder {
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void *data;
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void (*packet_printer)(const char *msg);
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dcd_tree_handle_t dcd_tree;
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cs_etm_mem_cb_type mem_access;
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ocsd_datapath_resp_t prev_return;
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};
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static u32
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cs_etm_decoder__mem_access(const void *context,
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const ocsd_vaddr_t address,
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const ocsd_mem_space_acc_t mem_space __maybe_unused,
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const u8 trace_chan_id,
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const u32 req_size,
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u8 *buffer)
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{
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struct cs_etm_decoder *decoder = (struct cs_etm_decoder *) context;
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return decoder->mem_access(decoder->data, trace_chan_id,
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address, req_size, buffer);
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}
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int cs_etm_decoder__add_mem_access_cb(struct cs_etm_decoder *decoder,
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u64 start, u64 end,
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cs_etm_mem_cb_type cb_func)
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{
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decoder->mem_access = cb_func;
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if (ocsd_dt_add_callback_trcid_mem_acc(decoder->dcd_tree, start, end,
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OCSD_MEM_SPACE_ANY,
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cs_etm_decoder__mem_access,
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decoder))
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return -1;
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return 0;
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}
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int cs_etm_decoder__reset(struct cs_etm_decoder *decoder)
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{
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ocsd_datapath_resp_t dp_ret;
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decoder->prev_return = OCSD_RESP_CONT;
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dp_ret = ocsd_dt_process_data(decoder->dcd_tree, OCSD_OP_RESET,
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0, 0, NULL, NULL);
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if (OCSD_DATA_RESP_IS_FATAL(dp_ret))
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return -1;
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return 0;
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}
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int cs_etm_decoder__get_packet(struct cs_etm_packet_queue *packet_queue,
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struct cs_etm_packet *packet)
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{
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if (!packet_queue || !packet)
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return -EINVAL;
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/* Nothing to do, might as well just return */
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if (packet_queue->packet_count == 0)
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return 0;
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/*
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* The queueing process in function cs_etm_decoder__buffer_packet()
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* increments the tail *before* using it. This is somewhat counter
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* intuitive but it has the advantage of centralizing tail management
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* at a single location. Because of that we need to follow the same
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* heuristic with the head, i.e we increment it before using its
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* value. Otherwise the first element of the packet queue is not
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* used.
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*/
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packet_queue->head = (packet_queue->head + 1) &
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(CS_ETM_PACKET_MAX_BUFFER - 1);
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*packet = packet_queue->packet_buffer[packet_queue->head];
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packet_queue->packet_count--;
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return 1;
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}
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static int cs_etm_decoder__gen_etmv3_config(struct cs_etm_trace_params *params,
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ocsd_etmv3_cfg *config)
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{
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config->reg_idr = params->etmv3.reg_idr;
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config->reg_ctrl = params->etmv3.reg_ctrl;
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config->reg_ccer = params->etmv3.reg_ccer;
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config->reg_trc_id = params->etmv3.reg_trc_id;
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config->arch_ver = ARCH_V7;
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config->core_prof = profile_CortexA;
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return 0;
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}
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static void cs_etm_decoder__gen_etmv4_config(struct cs_etm_trace_params *params,
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ocsd_etmv4_cfg *config)
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{
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config->reg_configr = params->etmv4.reg_configr;
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config->reg_traceidr = params->etmv4.reg_traceidr;
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config->reg_idr0 = params->etmv4.reg_idr0;
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config->reg_idr1 = params->etmv4.reg_idr1;
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config->reg_idr2 = params->etmv4.reg_idr2;
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config->reg_idr8 = params->etmv4.reg_idr8;
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config->reg_idr9 = 0;
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config->reg_idr10 = 0;
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config->reg_idr11 = 0;
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config->reg_idr12 = 0;
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config->reg_idr13 = 0;
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config->arch_ver = ARCH_V8;
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config->core_prof = profile_CortexA;
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}
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static void cs_etm_decoder__print_str_cb(const void *p_context,
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const char *msg,
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const int str_len)
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{
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if (p_context && str_len)
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((struct cs_etm_decoder *)p_context)->packet_printer(msg);
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}
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static int
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cs_etm_decoder__init_def_logger_printing(struct cs_etm_decoder_params *d_params,
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struct cs_etm_decoder *decoder)
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{
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int ret = 0;
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if (d_params->packet_printer == NULL)
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return -1;
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decoder->packet_printer = d_params->packet_printer;
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/*
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* Set up a library default logger to process any printers
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* (packet/raw frame) we add later.
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*/
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ret = ocsd_def_errlog_init(OCSD_ERR_SEV_ERROR, 1);
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if (ret != 0)
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return -1;
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/* no stdout / err / file output */
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ret = ocsd_def_errlog_config_output(C_API_MSGLOGOUT_FLG_NONE, NULL);
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if (ret != 0)
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return -1;
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/*
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* Set the string CB for the default logger, passes strings to
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* perf print logger.
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*/
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ret = ocsd_def_errlog_set_strprint_cb(decoder->dcd_tree,
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(void *)decoder,
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cs_etm_decoder__print_str_cb);
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if (ret != 0)
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ret = -1;
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return 0;
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}
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#ifdef CS_LOG_RAW_FRAMES
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static void
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cs_etm_decoder__init_raw_frame_logging(struct cs_etm_decoder_params *d_params,
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struct cs_etm_decoder *decoder)
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{
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/* Only log these during a --dump operation */
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if (d_params->operation == CS_ETM_OPERATION_PRINT) {
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/* set up a library default logger to process the
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* raw frame printer we add later
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*/
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ocsd_def_errlog_init(OCSD_ERR_SEV_ERROR, 1);
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/* no stdout / err / file output */
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ocsd_def_errlog_config_output(C_API_MSGLOGOUT_FLG_NONE, NULL);
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/* set the string CB for the default logger,
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* passes strings to perf print logger.
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*/
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ocsd_def_errlog_set_strprint_cb(decoder->dcd_tree,
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(void *)decoder,
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cs_etm_decoder__print_str_cb);
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/* use the built in library printer for the raw frames */
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ocsd_dt_set_raw_frame_printer(decoder->dcd_tree,
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CS_RAW_DEBUG_FLAGS);
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}
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}
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#else
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static void
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cs_etm_decoder__init_raw_frame_logging(
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struct cs_etm_decoder_params *d_params __maybe_unused,
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struct cs_etm_decoder *decoder __maybe_unused)
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{
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}
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#endif
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static int cs_etm_decoder__create_packet_printer(struct cs_etm_decoder *decoder,
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const char *decoder_name,
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void *trace_config)
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{
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u8 csid;
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if (ocsd_dt_create_decoder(decoder->dcd_tree, decoder_name,
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OCSD_CREATE_FLG_PACKET_PROC,
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trace_config, &csid))
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return -1;
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if (ocsd_dt_set_pkt_protocol_printer(decoder->dcd_tree, csid, 0))
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return -1;
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return 0;
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}
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static int
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cs_etm_decoder__create_etm_packet_printer(struct cs_etm_trace_params *t_params,
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struct cs_etm_decoder *decoder)
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{
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const char *decoder_name;
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ocsd_etmv3_cfg config_etmv3;
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ocsd_etmv4_cfg trace_config_etmv4;
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void *trace_config;
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switch (t_params->protocol) {
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case CS_ETM_PROTO_ETMV3:
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case CS_ETM_PROTO_PTM:
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cs_etm_decoder__gen_etmv3_config(t_params, &config_etmv3);
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decoder_name = (t_params->protocol == CS_ETM_PROTO_ETMV3) ?
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OCSD_BUILTIN_DCD_ETMV3 :
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OCSD_BUILTIN_DCD_PTM;
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trace_config = &config_etmv3;
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break;
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case CS_ETM_PROTO_ETMV4i:
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cs_etm_decoder__gen_etmv4_config(t_params, &trace_config_etmv4);
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decoder_name = OCSD_BUILTIN_DCD_ETMV4I;
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trace_config = &trace_config_etmv4;
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break;
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default:
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return -1;
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}
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return cs_etm_decoder__create_packet_printer(decoder,
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decoder_name,
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trace_config);
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}
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static ocsd_datapath_resp_t
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cs_etm_decoder__do_soft_timestamp(struct cs_etm_queue *etmq,
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struct cs_etm_packet_queue *packet_queue,
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const uint8_t trace_chan_id)
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{
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/* No timestamp packet has been received, nothing to do */
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if (!packet_queue->timestamp)
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return OCSD_RESP_CONT;
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packet_queue->timestamp = packet_queue->next_timestamp;
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/* Estimate the timestamp for the next range packet */
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packet_queue->next_timestamp += packet_queue->instr_count;
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packet_queue->instr_count = 0;
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/* Tell the front end which traceid_queue needs attention */
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cs_etm__etmq_set_traceid_queue_timestamp(etmq, trace_chan_id);
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return OCSD_RESP_WAIT;
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}
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static ocsd_datapath_resp_t
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cs_etm_decoder__do_hard_timestamp(struct cs_etm_queue *etmq,
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const ocsd_generic_trace_elem *elem,
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const uint8_t trace_chan_id)
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{
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struct cs_etm_packet_queue *packet_queue;
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/* First get the packet queue for this traceID */
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packet_queue = cs_etm__etmq_get_packet_queue(etmq, trace_chan_id);
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if (!packet_queue)
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return OCSD_RESP_FATAL_SYS_ERR;
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/*
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* We've seen a timestamp packet before - simply record the new value.
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* Function do_soft_timestamp() will report the value to the front end,
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* hence asking the decoder to keep decoding rather than stopping.
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*/
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if (packet_queue->timestamp) {
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packet_queue->next_timestamp = elem->timestamp;
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return OCSD_RESP_CONT;
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}
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/*
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* This is the first timestamp we've seen since the beginning of traces
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* or a discontinuity. Since timestamps packets are generated *after*
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* range packets have been generated, we need to estimate the time at
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* which instructions started by substracting the number of instructions
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* executed to the timestamp.
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*/
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packet_queue->timestamp = elem->timestamp - packet_queue->instr_count;
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packet_queue->next_timestamp = elem->timestamp;
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packet_queue->instr_count = 0;
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/* Tell the front end which traceid_queue needs attention */
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cs_etm__etmq_set_traceid_queue_timestamp(etmq, trace_chan_id);
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/* Halt processing until we are being told to proceed */
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return OCSD_RESP_WAIT;
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}
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static void
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cs_etm_decoder__reset_timestamp(struct cs_etm_packet_queue *packet_queue)
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{
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packet_queue->timestamp = 0;
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packet_queue->next_timestamp = 0;
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packet_queue->instr_count = 0;
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}
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static ocsd_datapath_resp_t
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cs_etm_decoder__buffer_packet(struct cs_etm_packet_queue *packet_queue,
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const u8 trace_chan_id,
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enum cs_etm_sample_type sample_type)
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{
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u32 et = 0;
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int cpu;
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if (packet_queue->packet_count >= CS_ETM_PACKET_MAX_BUFFER - 1)
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return OCSD_RESP_FATAL_SYS_ERR;
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if (cs_etm__get_cpu(trace_chan_id, &cpu) < 0)
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return OCSD_RESP_FATAL_SYS_ERR;
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et = packet_queue->tail;
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et = (et + 1) & (CS_ETM_PACKET_MAX_BUFFER - 1);
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packet_queue->tail = et;
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packet_queue->packet_count++;
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packet_queue->packet_buffer[et].sample_type = sample_type;
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packet_queue->packet_buffer[et].isa = CS_ETM_ISA_UNKNOWN;
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packet_queue->packet_buffer[et].cpu = cpu;
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packet_queue->packet_buffer[et].start_addr = CS_ETM_INVAL_ADDR;
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packet_queue->packet_buffer[et].end_addr = CS_ETM_INVAL_ADDR;
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packet_queue->packet_buffer[et].instr_count = 0;
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packet_queue->packet_buffer[et].last_instr_taken_branch = false;
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packet_queue->packet_buffer[et].last_instr_size = 0;
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packet_queue->packet_buffer[et].last_instr_type = 0;
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packet_queue->packet_buffer[et].last_instr_subtype = 0;
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packet_queue->packet_buffer[et].last_instr_cond = 0;
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packet_queue->packet_buffer[et].flags = 0;
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packet_queue->packet_buffer[et].exception_number = UINT32_MAX;
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packet_queue->packet_buffer[et].trace_chan_id = trace_chan_id;
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if (packet_queue->packet_count == CS_ETM_PACKET_MAX_BUFFER - 1)
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return OCSD_RESP_WAIT;
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return OCSD_RESP_CONT;
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}
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static ocsd_datapath_resp_t
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cs_etm_decoder__buffer_range(struct cs_etm_queue *etmq,
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struct cs_etm_packet_queue *packet_queue,
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const ocsd_generic_trace_elem *elem,
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const uint8_t trace_chan_id)
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{
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int ret = 0;
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struct cs_etm_packet *packet;
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ret = cs_etm_decoder__buffer_packet(packet_queue, trace_chan_id,
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CS_ETM_RANGE);
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if (ret != OCSD_RESP_CONT && ret != OCSD_RESP_WAIT)
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return ret;
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packet = &packet_queue->packet_buffer[packet_queue->tail];
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switch (elem->isa) {
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case ocsd_isa_aarch64:
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packet->isa = CS_ETM_ISA_A64;
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break;
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case ocsd_isa_arm:
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packet->isa = CS_ETM_ISA_A32;
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break;
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case ocsd_isa_thumb2:
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packet->isa = CS_ETM_ISA_T32;
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break;
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case ocsd_isa_tee:
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case ocsd_isa_jazelle:
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case ocsd_isa_custom:
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case ocsd_isa_unknown:
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default:
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packet->isa = CS_ETM_ISA_UNKNOWN;
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}
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packet->start_addr = elem->st_addr;
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packet->end_addr = elem->en_addr;
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packet->instr_count = elem->num_instr_range;
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packet->last_instr_type = elem->last_i_type;
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packet->last_instr_subtype = elem->last_i_subtype;
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packet->last_instr_cond = elem->last_instr_cond;
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switch (elem->last_i_type) {
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case OCSD_INSTR_BR:
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case OCSD_INSTR_BR_INDIRECT:
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packet->last_instr_taken_branch = elem->last_instr_exec;
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break;
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case OCSD_INSTR_ISB:
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case OCSD_INSTR_DSB_DMB:
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case OCSD_INSTR_WFI_WFE:
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case OCSD_INSTR_OTHER:
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default:
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packet->last_instr_taken_branch = false;
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break;
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}
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packet->last_instr_size = elem->last_instr_sz;
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/* per-thread scenario, no need to generate a timestamp */
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if (cs_etm__etmq_is_timeless(etmq))
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goto out;
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/*
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* The packet queue is full and we haven't seen a timestamp (had we
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* seen one the packet queue wouldn't be full). Let the front end
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* deal with it.
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*/
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if (ret == OCSD_RESP_WAIT)
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goto out;
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packet_queue->instr_count += elem->num_instr_range;
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/* Tell the front end we have a new timestamp to process */
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ret = cs_etm_decoder__do_soft_timestamp(etmq, packet_queue,
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trace_chan_id);
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out:
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return ret;
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}
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static ocsd_datapath_resp_t
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cs_etm_decoder__buffer_discontinuity(struct cs_etm_packet_queue *queue,
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const uint8_t trace_chan_id)
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{
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/*
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* Something happened and who knows when we'll get new traces so
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* reset time statistics.
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*/
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cs_etm_decoder__reset_timestamp(queue);
|
|
return cs_etm_decoder__buffer_packet(queue, trace_chan_id,
|
|
CS_ETM_DISCONTINUITY);
|
|
}
|
|
|
|
static ocsd_datapath_resp_t
|
|
cs_etm_decoder__buffer_exception(struct cs_etm_packet_queue *queue,
|
|
const ocsd_generic_trace_elem *elem,
|
|
const uint8_t trace_chan_id)
|
|
{ int ret = 0;
|
|
struct cs_etm_packet *packet;
|
|
|
|
ret = cs_etm_decoder__buffer_packet(queue, trace_chan_id,
|
|
CS_ETM_EXCEPTION);
|
|
if (ret != OCSD_RESP_CONT && ret != OCSD_RESP_WAIT)
|
|
return ret;
|
|
|
|
packet = &queue->packet_buffer[queue->tail];
|
|
packet->exception_number = elem->exception_number;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ocsd_datapath_resp_t
|
|
cs_etm_decoder__buffer_exception_ret(struct cs_etm_packet_queue *queue,
|
|
const uint8_t trace_chan_id)
|
|
{
|
|
return cs_etm_decoder__buffer_packet(queue, trace_chan_id,
|
|
CS_ETM_EXCEPTION_RET);
|
|
}
|
|
|
|
static ocsd_datapath_resp_t
|
|
cs_etm_decoder__set_tid(struct cs_etm_queue *etmq,
|
|
struct cs_etm_packet_queue *packet_queue,
|
|
const ocsd_generic_trace_elem *elem,
|
|
const uint8_t trace_chan_id)
|
|
{
|
|
pid_t tid;
|
|
|
|
/* Ignore PE_CONTEXT packets that don't have a valid contextID */
|
|
if (!elem->context.ctxt_id_valid)
|
|
return OCSD_RESP_CONT;
|
|
|
|
tid = elem->context.context_id;
|
|
if (cs_etm__etmq_set_tid(etmq, tid, trace_chan_id))
|
|
return OCSD_RESP_FATAL_SYS_ERR;
|
|
|
|
/*
|
|
* A timestamp is generated after a PE_CONTEXT element so make sure
|
|
* to rely on that coming one.
|
|
*/
|
|
cs_etm_decoder__reset_timestamp(packet_queue);
|
|
|
|
return OCSD_RESP_CONT;
|
|
}
|
|
|
|
static ocsd_datapath_resp_t cs_etm_decoder__gen_trace_elem_printer(
|
|
const void *context,
|
|
const ocsd_trc_index_t indx __maybe_unused,
|
|
const u8 trace_chan_id __maybe_unused,
|
|
const ocsd_generic_trace_elem *elem)
|
|
{
|
|
ocsd_datapath_resp_t resp = OCSD_RESP_CONT;
|
|
struct cs_etm_decoder *decoder = (struct cs_etm_decoder *) context;
|
|
struct cs_etm_queue *etmq = decoder->data;
|
|
struct cs_etm_packet_queue *packet_queue;
|
|
|
|
/* First get the packet queue for this traceID */
|
|
packet_queue = cs_etm__etmq_get_packet_queue(etmq, trace_chan_id);
|
|
if (!packet_queue)
|
|
return OCSD_RESP_FATAL_SYS_ERR;
|
|
|
|
switch (elem->elem_type) {
|
|
case OCSD_GEN_TRC_ELEM_UNKNOWN:
|
|
break;
|
|
case OCSD_GEN_TRC_ELEM_EO_TRACE:
|
|
case OCSD_GEN_TRC_ELEM_NO_SYNC:
|
|
case OCSD_GEN_TRC_ELEM_TRACE_ON:
|
|
resp = cs_etm_decoder__buffer_discontinuity(packet_queue,
|
|
trace_chan_id);
|
|
break;
|
|
case OCSD_GEN_TRC_ELEM_INSTR_RANGE:
|
|
resp = cs_etm_decoder__buffer_range(etmq, packet_queue, elem,
|
|
trace_chan_id);
|
|
break;
|
|
case OCSD_GEN_TRC_ELEM_EXCEPTION:
|
|
resp = cs_etm_decoder__buffer_exception(packet_queue, elem,
|
|
trace_chan_id);
|
|
break;
|
|
case OCSD_GEN_TRC_ELEM_EXCEPTION_RET:
|
|
resp = cs_etm_decoder__buffer_exception_ret(packet_queue,
|
|
trace_chan_id);
|
|
break;
|
|
case OCSD_GEN_TRC_ELEM_TIMESTAMP:
|
|
resp = cs_etm_decoder__do_hard_timestamp(etmq, elem,
|
|
trace_chan_id);
|
|
break;
|
|
case OCSD_GEN_TRC_ELEM_PE_CONTEXT:
|
|
resp = cs_etm_decoder__set_tid(etmq, packet_queue,
|
|
elem, trace_chan_id);
|
|
break;
|
|
/* Unused packet types */
|
|
case OCSD_GEN_TRC_ELEM_I_RANGE_NOPATH:
|
|
case OCSD_GEN_TRC_ELEM_ADDR_NACC:
|
|
case OCSD_GEN_TRC_ELEM_CYCLE_COUNT:
|
|
case OCSD_GEN_TRC_ELEM_ADDR_UNKNOWN:
|
|
case OCSD_GEN_TRC_ELEM_EVENT:
|
|
case OCSD_GEN_TRC_ELEM_SWTRACE:
|
|
case OCSD_GEN_TRC_ELEM_CUSTOM:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return resp;
|
|
}
|
|
|
|
static int cs_etm_decoder__create_etm_packet_decoder(
|
|
struct cs_etm_trace_params *t_params,
|
|
struct cs_etm_decoder *decoder)
|
|
{
|
|
const char *decoder_name;
|
|
ocsd_etmv3_cfg config_etmv3;
|
|
ocsd_etmv4_cfg trace_config_etmv4;
|
|
void *trace_config;
|
|
u8 csid;
|
|
|
|
switch (t_params->protocol) {
|
|
case CS_ETM_PROTO_ETMV3:
|
|
case CS_ETM_PROTO_PTM:
|
|
cs_etm_decoder__gen_etmv3_config(t_params, &config_etmv3);
|
|
decoder_name = (t_params->protocol == CS_ETM_PROTO_ETMV3) ?
|
|
OCSD_BUILTIN_DCD_ETMV3 :
|
|
OCSD_BUILTIN_DCD_PTM;
|
|
trace_config = &config_etmv3;
|
|
break;
|
|
case CS_ETM_PROTO_ETMV4i:
|
|
cs_etm_decoder__gen_etmv4_config(t_params, &trace_config_etmv4);
|
|
decoder_name = OCSD_BUILTIN_DCD_ETMV4I;
|
|
trace_config = &trace_config_etmv4;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
if (ocsd_dt_create_decoder(decoder->dcd_tree,
|
|
decoder_name,
|
|
OCSD_CREATE_FLG_FULL_DECODER,
|
|
trace_config, &csid))
|
|
return -1;
|
|
|
|
if (ocsd_dt_set_gen_elem_outfn(decoder->dcd_tree,
|
|
cs_etm_decoder__gen_trace_elem_printer,
|
|
decoder))
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params,
|
|
struct cs_etm_trace_params *t_params,
|
|
struct cs_etm_decoder *decoder)
|
|
{
|
|
if (d_params->operation == CS_ETM_OPERATION_PRINT)
|
|
return cs_etm_decoder__create_etm_packet_printer(t_params,
|
|
decoder);
|
|
else if (d_params->operation == CS_ETM_OPERATION_DECODE)
|
|
return cs_etm_decoder__create_etm_packet_decoder(t_params,
|
|
decoder);
|
|
|
|
return -1;
|
|
}
|
|
|
|
struct cs_etm_decoder *
|
|
cs_etm_decoder__new(int num_cpu, struct cs_etm_decoder_params *d_params,
|
|
struct cs_etm_trace_params t_params[])
|
|
{
|
|
struct cs_etm_decoder *decoder;
|
|
ocsd_dcd_tree_src_t format;
|
|
u32 flags;
|
|
int i, ret;
|
|
|
|
if ((!t_params) || (!d_params))
|
|
return NULL;
|
|
|
|
decoder = zalloc(sizeof(*decoder));
|
|
|
|
if (!decoder)
|
|
return NULL;
|
|
|
|
decoder->data = d_params->data;
|
|
decoder->prev_return = OCSD_RESP_CONT;
|
|
format = (d_params->formatted ? OCSD_TRC_SRC_FRAME_FORMATTED :
|
|
OCSD_TRC_SRC_SINGLE);
|
|
flags = 0;
|
|
flags |= (d_params->fsyncs ? OCSD_DFRMTR_HAS_FSYNCS : 0);
|
|
flags |= (d_params->hsyncs ? OCSD_DFRMTR_HAS_HSYNCS : 0);
|
|
flags |= (d_params->frame_aligned ? OCSD_DFRMTR_FRAME_MEM_ALIGN : 0);
|
|
|
|
/*
|
|
* Drivers may add barrier frames when used with perf, set up to
|
|
* handle this. Barriers const of FSYNC packet repeated 4 times.
|
|
*/
|
|
flags |= OCSD_DFRMTR_RESET_ON_4X_FSYNC;
|
|
|
|
/* Create decode tree for the data source */
|
|
decoder->dcd_tree = ocsd_create_dcd_tree(format, flags);
|
|
|
|
if (decoder->dcd_tree == 0)
|
|
goto err_free_decoder;
|
|
|
|
/* init library print logging support */
|
|
ret = cs_etm_decoder__init_def_logger_printing(d_params, decoder);
|
|
if (ret != 0)
|
|
goto err_free_decoder;
|
|
|
|
/* init raw frame logging if required */
|
|
cs_etm_decoder__init_raw_frame_logging(d_params, decoder);
|
|
|
|
for (i = 0; i < num_cpu; i++) {
|
|
ret = cs_etm_decoder__create_etm_decoder(d_params,
|
|
&t_params[i],
|
|
decoder);
|
|
if (ret != 0)
|
|
goto err_free_decoder;
|
|
}
|
|
|
|
return decoder;
|
|
|
|
err_free_decoder:
|
|
cs_etm_decoder__free(decoder);
|
|
return NULL;
|
|
}
|
|
|
|
int cs_etm_decoder__process_data_block(struct cs_etm_decoder *decoder,
|
|
u64 indx, const u8 *buf,
|
|
size_t len, size_t *consumed)
|
|
{
|
|
int ret = 0;
|
|
ocsd_datapath_resp_t cur = OCSD_RESP_CONT;
|
|
ocsd_datapath_resp_t prev_return = decoder->prev_return;
|
|
size_t processed = 0;
|
|
u32 count;
|
|
|
|
while (processed < len) {
|
|
if (OCSD_DATA_RESP_IS_WAIT(prev_return)) {
|
|
cur = ocsd_dt_process_data(decoder->dcd_tree,
|
|
OCSD_OP_FLUSH,
|
|
0,
|
|
0,
|
|
NULL,
|
|
NULL);
|
|
} else if (OCSD_DATA_RESP_IS_CONT(prev_return)) {
|
|
cur = ocsd_dt_process_data(decoder->dcd_tree,
|
|
OCSD_OP_DATA,
|
|
indx + processed,
|
|
len - processed,
|
|
&buf[processed],
|
|
&count);
|
|
processed += count;
|
|
} else {
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Return to the input code if the packet buffer is full.
|
|
* Flushing will get done once the packet buffer has been
|
|
* processed.
|
|
*/
|
|
if (OCSD_DATA_RESP_IS_WAIT(cur))
|
|
break;
|
|
|
|
prev_return = cur;
|
|
}
|
|
|
|
decoder->prev_return = cur;
|
|
*consumed = processed;
|
|
|
|
return ret;
|
|
}
|
|
|
|
void cs_etm_decoder__free(struct cs_etm_decoder *decoder)
|
|
{
|
|
if (!decoder)
|
|
return;
|
|
|
|
ocsd_destroy_dcd_tree(decoder->dcd_tree);
|
|
decoder->dcd_tree = NULL;
|
|
free(decoder);
|
|
}
|