1/******************************************************************************
  2 *
  3 * This file is provided under a dual BSD/GPLv2 license.  When using or
  4 * redistributing this file, you may do so under either license.
  5 *
  6 * GPL LICENSE SUMMARY
  7 *
  8 * Copyright(c) 2017 Intel Deutschland GmbH
  9 * Copyright(c) 2019 - 2020 Intel Corporation
 10 *
 11 * This program is free software; you can redistribute it and/or modify
 12 * it under the terms of version 2 of the GNU General Public License as
 13 * published by the Free Software Foundation.
 14 *
 15 * This program is distributed in the hope that it will be useful, but
 16 * WITHOUT ANY WARRANTY; without even the implied warranty of
 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 18 * General Public License for more details.
 19 *
 20 * The full GNU General Public License is included in this distribution
 21 * in the file called COPYING.
 22 *
 23 * Contact Information:
 24 *  Intel Linux Wireless <linuxwifi@intel.com>
 25 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 26 *
 27 * BSD LICENSE
 28 *
 29 * Copyright(c) 2017 Intel Deutschland GmbH
 30 * Copyright(c) 2019 - 2020 Intel Corporation
 31 * All rights reserved.
 32 *
 33 * Redistribution and use in source and binary forms, with or without
 34 * modification, are permitted provided that the following conditions
 35 * are met:
 36 *
 37 *  * Redistributions of source code must retain the above copyright
 38 *    notice, this list of conditions and the following disclaimer.
 39 *  * Redistributions in binary form must reproduce the above copyright
 40 *    notice, this list of conditions and the following disclaimer in
 41 *    the documentation and/or other materials provided with the
 42 *    distribution.
 43 *  * Neither the name Intel Corporation nor the names of its
 44 *    contributors may be used to endorse or promote products derived
 45 *    from this software without specific prior written permission.
 46 *
 47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 48 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 49 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 50 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 51 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 52 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 53 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 57 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 58 *
 59 *****************************************************************************/
 60#include "iwl-drv.h"
 61#include "runtime.h"
 62#include "dbg.h"
 63#include "debugfs.h"
 64
 65#include "fw/api/soc.h"
 66#include "fw/api/commands.h"
 67
 68void iwl_fw_runtime_init(struct iwl_fw_runtime *fwrt, struct iwl_trans *trans,
 69			const struct iwl_fw *fw,
 70			const struct iwl_fw_runtime_ops *ops, void *ops_ctx,
 71			struct dentry *dbgfs_dir)
 72{
 73	int i;
 74
 75	memset(fwrt, 0, sizeof(*fwrt));
 76	fwrt->trans = trans;
 77	fwrt->fw = fw;
 78	fwrt->dev = trans->dev;
 79	fwrt->dump.conf = FW_DBG_INVALID;
 80	fwrt->ops = ops;
 81	fwrt->ops_ctx = ops_ctx;
 82	for (i = 0; i < IWL_FW_RUNTIME_DUMP_WK_NUM; i++) {
 83		fwrt->dump.wks[i].idx = i;
 84		INIT_DELAYED_WORK(&fwrt->dump.wks[i].wk, iwl_fw_error_dump_wk);
 85	}
 86	iwl_fwrt_dbgfs_register(fwrt, dbgfs_dir);
 87}
 88IWL_EXPORT_SYMBOL(iwl_fw_runtime_init);
 89
 90void iwl_fw_runtime_suspend(struct iwl_fw_runtime *fwrt)
 91{
 92	iwl_fw_suspend_timestamp(fwrt);
 93}
 94IWL_EXPORT_SYMBOL(iwl_fw_runtime_suspend);
 95
 96void iwl_fw_runtime_resume(struct iwl_fw_runtime *fwrt)
 97{
 98	iwl_fw_resume_timestamp(fwrt);
 99}
100IWL_EXPORT_SYMBOL(iwl_fw_runtime_resume);
101
102/* set device type and latency */
103int iwl_set_soc_latency(struct iwl_fw_runtime *fwrt)
104{
105	struct iwl_soc_configuration_cmd cmd = {};
106	struct iwl_host_cmd hcmd = {
107		.id = iwl_cmd_id(SOC_CONFIGURATION_CMD, SYSTEM_GROUP, 0),
108		.data[0] = &cmd,
109		.len[0] = sizeof(cmd),
110	};
111	int ret;
112
113	/*
114	 * In VER_1 of this command, the discrete value is considered
115	 * an integer; In VER_2, it's a bitmask.  Since we have only 2
116	 * values in VER_1, this is backwards-compatible with VER_2,
117	 * as long as we don't set any other bits.
118	 */
119	if (!fwrt->trans->trans_cfg->integrated)
120		cmd.flags = cpu_to_le32(SOC_CONFIG_CMD_FLAGS_DISCRETE);
121
122	BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_NONE !=
123		     SOC_FLAGS_LTR_APPLY_DELAY_NONE);
124	BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_200US !=
125		     SOC_FLAGS_LTR_APPLY_DELAY_200);
126	BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_2500US !=
127		     SOC_FLAGS_LTR_APPLY_DELAY_2500);
128	BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_1820US !=
129		     SOC_FLAGS_LTR_APPLY_DELAY_1820);
130
131	if (fwrt->trans->trans_cfg->ltr_delay != IWL_CFG_TRANS_LTR_DELAY_NONE &&
132	    !WARN_ON(!fwrt->trans->trans_cfg->integrated))
133		cmd.flags |= le32_encode_bits(fwrt->trans->trans_cfg->ltr_delay,
134					      SOC_FLAGS_LTR_APPLY_DELAY_MASK);
135
136	if (iwl_fw_lookup_cmd_ver(fwrt->fw, IWL_ALWAYS_LONG_GROUP,
137				  SCAN_REQ_UMAC) >= 2 &&
138	    fwrt->trans->trans_cfg->low_latency_xtal)
139		cmd.flags |= cpu_to_le32(SOC_CONFIG_CMD_FLAGS_LOW_LATENCY);
140
141	cmd.latency = cpu_to_le32(fwrt->trans->trans_cfg->xtal_latency);
142
143	ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);
144	if (ret)
145		IWL_ERR(fwrt, "Failed to set soc latency: %d\n", ret);
146	return ret;
147}
148IWL_EXPORT_SYMBOL(iwl_set_soc_latency);