etm_dummy.c 3.12 KB
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/***************************************************************************
 *   Copyright (C) 2007 by Dominic Rath                                    *
 *   Dominic.Rath@gmx.de                                                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
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 *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
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 ***************************************************************************/
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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

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#include "arm.h"
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#include "etm_dummy.h"

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COMMAND_HANDLER(handle_etm_dummy_config_command)
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{
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	struct target *target;
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	struct arm *arm;
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	target = get_target(CMD_ARGV[0]);
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	if (!target) {
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		LOG_ERROR("target '%s' not defined", CMD_ARGV[0]);
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		return ERROR_FAIL;
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	}
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	arm = target_to_arm(target);
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	if (!is_arm(arm)) {
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		command_print(CMD_CTX, "target '%s' isn't an ARM", CMD_ARGV[0]);
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		return ERROR_FAIL;
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	}
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	if (arm->etm)
		arm->etm->capture_driver_priv = NULL;
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	else {
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		LOG_ERROR("target has no ETM defined, ETM dummy left unconfigured");
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		return ERROR_FAIL;
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	}

	return ERROR_OK;
}

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static const struct command_registration etm_dummy_config_command_handlers[] = {
	{
		.name = "config",
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		.handler = handle_etm_dummy_config_command,
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		.mode = COMMAND_CONFIG,
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		.usage = "target",
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	},
	COMMAND_REGISTRATION_DONE
};
static const struct command_registration etm_dummy_command_handlers[] = {
	{
		.name = "etm_dummy",
		.mode = COMMAND_ANY,
		.help = "Dummy ETM capture driver command group",
		.chain = etm_dummy_config_command_handlers,
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		.usage = "",
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	},
	COMMAND_REGISTRATION_DONE
};

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static int etm_dummy_init(struct etm_context *etm_ctx)
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{
	return ERROR_OK;
}

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static trace_status_t etm_dummy_status(struct etm_context *etm_ctx)
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{
	return TRACE_IDLE;
}

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static int etm_dummy_read_trace(struct etm_context *etm_ctx)
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{
	return ERROR_OK;
}

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static int etm_dummy_start_capture(struct etm_context *etm_ctx)
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{
	return ERROR_ETM_PORTMODE_NOT_SUPPORTED;
}

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static int etm_dummy_stop_capture(struct etm_context *etm_ctx)
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{
	return ERROR_OK;
}

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struct etm_capture_driver etm_dummy_capture_driver = {
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	.name = "dummy",
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	.commands = etm_dummy_command_handlers,
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	.init = etm_dummy_init,
	.status = etm_dummy_status,
	.start_capture = etm_dummy_start_capture,
	.stop_capture = etm_dummy_stop_capture,
	.read_trace = etm_dummy_read_trace,
};