init.c

// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2017 Intel Deutschland GmbH
 * Copyright (C) 2019-2021, 2024-2025 Intel Corporation
 */
#include "iwl-drv.h"
#include "runtime.h"
#include "dbg.h"
#include "debugfs.h"

#include "fw/api/system.h"
#include "fw/api/commands.h"
#include "fw/api/rx.h"
#include "fw/api/datapath.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,
			const struct iwl_dump_sanitize_ops *sanitize_ops,
			void *sanitize_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->sanitize_ops = sanitize_ops;
	fwrt->sanitize_ctx = sanitize_ctx;
	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);

/* Assumes the appropriate lock is held by the caller */
void iwl_fw_runtime_suspend(struct iwl_fw_runtime *fwrt)
{
	iwl_fw_suspend_timestamp(fwrt);
	iwl_dbg_tlv_time_point_sync(fwrt, IWL_FW_INI_TIME_POINT_HOST_D3_START,
				    NULL);
}
IWL_EXPORT_SYMBOL(iwl_fw_runtime_suspend);

void iwl_fw_runtime_resume(struct iwl_fw_runtime *fwrt)
{
	iwl_dbg_tlv_time_point(fwrt, IWL_FW_INI_TIME_POINT_HOST_D3_END, NULL);
	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 = WIDE_ID(SYSTEM_GROUP, SOC_CONFIGURATION_CMD),
		.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->mac_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->mac_cfg->ltr_delay != IWL_CFG_TRANS_LTR_DELAY_NONE &&
	    !WARN_ON(!fwrt->trans->mac_cfg->integrated))
		cmd.flags |= le32_encode_bits(fwrt->trans->mac_cfg->ltr_delay,
					      SOC_FLAGS_LTR_APPLY_DELAY_MASK);

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

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

int iwl_configure_rxq(struct iwl_fw_runtime *fwrt)
{
	int i, num_queues, size, ret;
	struct iwl_rfh_queue_config *cmd;
	struct iwl_host_cmd hcmd = {
		.id = WIDE_ID(DATA_PATH_GROUP, RFH_QUEUE_CONFIG_CMD),
		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
	};

	/*
	 * The default queue is configured via context info, so if we
	 * have a single queue, there's nothing to do here.
	 */
	if (fwrt->trans->info.num_rxqs == 1)
		return 0;

	if (fwrt->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_22000)
		return 0;

	/* skip the default queue */
	num_queues = fwrt->trans->info.num_rxqs - 1;

	size = struct_size(cmd, data, num_queues);

	cmd = kzalloc(size, GFP_KERNEL);
	if (!cmd)
		return -ENOMEM;

	cmd->num_queues = num_queues;

	for (i = 0; i < num_queues; i++) {
		struct iwl_trans_rxq_dma_data data;

		cmd->data[i].q_num = i + 1;
		ret = iwl_trans_get_rxq_dma_data(fwrt->trans, i + 1, &data);
		if (ret)
			goto out;

		cmd->data[i].fr_bd_cb = cpu_to_le64(data.fr_bd_cb);
		cmd->data[i].urbd_stts_wrptr =
			cpu_to_le64(data.urbd_stts_wrptr);
		cmd->data[i].ur_bd_cb = cpu_to_le64(data.ur_bd_cb);
		cmd->data[i].fr_bd_wid = cpu_to_le32(data.fr_bd_wid);
	}

	hcmd.data[0] = cmd;
	hcmd.len[0] = size;

	ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);

out:
	kfree(cmd);

	if (ret)
		IWL_ERR(fwrt, "Failed to configure RX queues: %d\n", ret);

	return ret;
}
IWL_EXPORT_SYMBOL(iwl_configure_rxq);