init.c

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2017 Intel Deutschland GmbH
 * Copyright(c) 2019 - 2020 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * 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.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2017 Intel Deutschland GmbH
 * Copyright(c) 2019 - 2020 Intel Corporation
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include "iwl-drv.h"
#include "runtime.h"
#include "dbg.h"
#include "debugfs.h"

#include "fw/api/soc.h"
#include "fw/api/commands.h"

void iwl_fw_runtime_init(struct iwl_fw_runtime *fwrt, struct iwl_trans *trans,
			const struct iwl_fw *fw,
			const struct iwl_fw_runtime_ops *ops, void *ops_ctx,
			struct dentry *dbgfs_dir)
{
	int i;

	memset(fwrt, 0, sizeof(*fwrt));
	fwrt->trans = trans;
	fwrt->fw = fw;
	fwrt->dev = trans->dev;
	fwrt->dump.conf = FW_DBG_INVALID;
	fwrt->ops = ops;
	fwrt->ops_ctx = ops_ctx;
	for (i = 0; i < IWL_FW_RUNTIME_DUMP_WK_NUM; i++) {
		fwrt->dump.wks[i].idx = i;
		INIT_DELAYED_WORK(&fwrt->dump.wks[i].wk, iwl_fw_error_dump_wk);
	}
	iwl_fwrt_dbgfs_register(fwrt, dbgfs_dir);
}
IWL_EXPORT_SYMBOL(iwl_fw_runtime_init);

void iwl_fw_runtime_suspend(struct iwl_fw_runtime *fwrt)
{
	iwl_fw_suspend_timestamp(fwrt);
}
IWL_EXPORT_SYMBOL(iwl_fw_runtime_suspend);

void iwl_fw_runtime_resume(struct iwl_fw_runtime *fwrt)
{
	iwl_fw_resume_timestamp(fwrt);
}
IWL_EXPORT_SYMBOL(iwl_fw_runtime_resume);

/* set device type and latency */
int iwl_set_soc_latency(struct iwl_fw_runtime *fwrt)
{
	struct iwl_soc_configuration_cmd cmd = {};
	struct iwl_host_cmd hcmd = {
		.id = iwl_cmd_id(SOC_CONFIGURATION_CMD, SYSTEM_GROUP, 0),
		.data[0] = &cmd,
		.len[0] = sizeof(cmd),
	};
	int ret;

	/*
	 * In VER_1 of this command, the discrete value is considered
	 * an integer; In VER_2, it's a bitmask.  Since we have only 2
	 * values in VER_1, this is backwards-compatible with VER_2,
	 * as long as we don't set any other bits.
	 */
	if (!fwrt->trans->trans_cfg->integrated)
		cmd.flags = cpu_to_le32(SOC_CONFIG_CMD_FLAGS_DISCRETE);

	BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_NONE !=
		     SOC_FLAGS_LTR_APPLY_DELAY_NONE);
	BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_200US !=
		     SOC_FLAGS_LTR_APPLY_DELAY_200);
	BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_2500US !=
		     SOC_FLAGS_LTR_APPLY_DELAY_2500);
	BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_1820US !=
		     SOC_FLAGS_LTR_APPLY_DELAY_1820);

	if (fwrt->trans->trans_cfg->ltr_delay != IWL_CFG_TRANS_LTR_DELAY_NONE &&
	    !WARN_ON(!fwrt->trans->trans_cfg->integrated))
		cmd.flags |= le32_encode_bits(fwrt->trans->trans_cfg->ltr_delay,
					      SOC_FLAGS_LTR_APPLY_DELAY_MASK);

	if (iwl_fw_lookup_cmd_ver(fwrt->fw, IWL_ALWAYS_LONG_GROUP,
				  SCAN_REQ_UMAC,
				  IWL_FW_CMD_VER_UNKNOWN) >= 2 &&
	    fwrt->trans->trans_cfg->low_latency_xtal)
		cmd.flags |= cpu_to_le32(SOC_CONFIG_CMD_FLAGS_LOW_LATENCY);

	cmd.latency = cpu_to_le32(fwrt->trans->trans_cfg->xtal_latency);

	ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);
	if (ret)
		IWL_ERR(fwrt, "Failed to set soc latency: %d\n", ret);
	return ret;
}
IWL_EXPORT_SYMBOL(iwl_set_soc_latency);