// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// Copyright(c) 2020 Intel Corporation. All rights reserved.
//
// Author: Fred Oh <fred.oh@linux.intel.com>
//

/*
 * Hardware interface for audio DSP on IceLake.
 */

#include <linux/kernel.h>
#include <linux/kconfig.h>
#include <linux/export.h>
#include <linux/bits.h>
#include "../ipc4-priv.h"
#include "../ops.h"
#include "hda.h"
#include "hda-ipc.h"
#include "../sof-audio.h"

#define ICL_DSP_HPRO_CORE_ID 3

static const struct snd_sof_debugfs_map icl_dsp_debugfs[] = {
	{"hda", HDA_DSP_HDA_BAR, 0, 0x4000, SOF_DEBUGFS_ACCESS_ALWAYS},
	{"pp", HDA_DSP_PP_BAR,  0, 0x1000, SOF_DEBUGFS_ACCESS_ALWAYS},
	{"dsp", HDA_DSP_BAR,  0, 0x10000, SOF_DEBUGFS_ACCESS_ALWAYS},
};

static int icl_dsp_core_stall(struct snd_sof_dev *sdev, unsigned int core_mask)
{
	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
	const struct sof_intel_dsp_desc *chip = hda->desc;

	/* make sure core_mask in host managed cores */
	core_mask &= chip->host_managed_cores_mask;
	if (!core_mask) {
		dev_err(sdev->dev, "error: core_mask is not in host managed cores\n");
		return -EINVAL;
	}

	/* stall core */
	snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS,
					 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask),
					 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask));

	return 0;
}

/*
 * post fw run operation for ICL.
 * Core 3 will be powered up and in stall when HPRO is enabled
 */
static int icl_dsp_post_fw_run(struct snd_sof_dev *sdev)
{
	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
	int ret;

	if (sdev->first_boot) {
		struct sof_intel_hda_dev *hdev = sdev->pdata->hw_pdata;

		ret = hda_sdw_startup(sdev);
		if (ret < 0) {
			dev_err(sdev->dev, "error: could not startup SoundWire links\n");
			return ret;
		}

		/* Check if IMR boot is usable */
		if (!sof_debug_check_flag(SOF_DBG_IGNORE_D3_PERSISTENT) &&
		    sdev->fw_ready.flags & SOF_IPC_INFO_D3_PERSISTENT)
			hdev->imrboot_supported = true;
	}

	hda_sdw_int_enable(sdev, true);

	/*
	 * The recommended HW programming sequence for ICL is to
	 * power up core 3 and keep it in stall if HPRO is enabled.
	 */
	if (!hda->clk_config_lpro) {
		ret = hda_dsp_enable_core(sdev, BIT(ICL_DSP_HPRO_CORE_ID));
		if (ret < 0) {
			dev_err(sdev->dev, "error: dsp core power up failed on core %d\n",
				ICL_DSP_HPRO_CORE_ID);
			return ret;
		}

		sdev->enabled_cores_mask |= BIT(ICL_DSP_HPRO_CORE_ID);
		sdev->dsp_core_ref_count[ICL_DSP_HPRO_CORE_ID]++;

		snd_sof_dsp_stall(sdev, BIT(ICL_DSP_HPRO_CORE_ID));
	}

	/* re-enable clock gating and power gating */
	return hda_dsp_ctrl_clock_power_gating(sdev, true);
}

/* Icelake ops */
struct snd_sof_dsp_ops sof_icl_ops;
EXPORT_SYMBOL_NS(sof_icl_ops, SND_SOC_SOF_INTEL_HDA_COMMON);

int sof_icl_ops_init(struct snd_sof_dev *sdev)
{
	/* common defaults */
	memcpy(&sof_icl_ops, &sof_hda_common_ops, sizeof(struct snd_sof_dsp_ops));

	/* probe/remove/shutdown */
	sof_icl_ops.shutdown	= hda_dsp_shutdown;

	if (sdev->pdata->ipc_type == SOF_IPC) {
		/* doorbell */
		sof_icl_ops.irq_thread	= cnl_ipc_irq_thread;

		/* ipc */
		sof_icl_ops.send_msg	= cnl_ipc_send_msg;

		/* debug */
		sof_icl_ops.ipc_dump	= cnl_ipc_dump;
	}

	if (sdev->pdata->ipc_type == SOF_INTEL_IPC4) {
		struct sof_ipc4_fw_data *ipc4_data;

		sdev->private = devm_kzalloc(sdev->dev, sizeof(*ipc4_data), GFP_KERNEL);
		if (!sdev->private)
			return -ENOMEM;

		ipc4_data = sdev->private;
		ipc4_data->manifest_fw_hdr_offset = SOF_MAN4_FW_HDR_OFFSET;

		ipc4_data->mtrace_type = SOF_IPC4_MTRACE_INTEL_CAVS_2;

		/* doorbell */
		sof_icl_ops.irq_thread	= cnl_ipc4_irq_thread;

		/* ipc */
		sof_icl_ops.send_msg	= cnl_ipc4_send_msg;

		/* debug */
		sof_icl_ops.ipc_dump	= cnl_ipc4_dump;
	}

	/* debug */
	sof_icl_ops.debug_map	= icl_dsp_debugfs;
	sof_icl_ops.debug_map_count	= ARRAY_SIZE(icl_dsp_debugfs);

	/* pre/post fw run */
	sof_icl_ops.post_fw_run = icl_dsp_post_fw_run;

	/* firmware run */
	sof_icl_ops.run = hda_dsp_cl_boot_firmware_iccmax;
	sof_icl_ops.stall = icl_dsp_core_stall;

	/* dsp core get/put */
	sof_icl_ops.core_get = hda_dsp_core_get;

	/* set DAI driver ops */
	hda_set_dai_drv_ops(sdev, &sof_icl_ops);

	return 0;
};
EXPORT_SYMBOL_NS(sof_icl_ops_init, SND_SOC_SOF_INTEL_HDA_COMMON);

const struct sof_intel_dsp_desc icl_chip_info = {
	/* Icelake */
	.cores_num = 4,
	.init_core_mask = 1,
	.host_managed_cores_mask = GENMASK(3, 0),
	.ipc_req = CNL_DSP_REG_HIPCIDR,
	.ipc_req_mask = CNL_DSP_REG_HIPCIDR_BUSY,
	.ipc_ack = CNL_DSP_REG_HIPCIDA,
	.ipc_ack_mask = CNL_DSP_REG_HIPCIDA_DONE,
	.ipc_ctl = CNL_DSP_REG_HIPCCTL,
	.rom_status_reg = HDA_DSP_SRAM_REG_ROM_STATUS,
	.rom_init_timeout	= 300,
	.ssp_count = ICL_SSP_COUNT,
	.ssp_base_offset = CNL_SSP_BASE_OFFSET,
	.sdw_shim_base = SDW_SHIM_BASE,
	.sdw_alh_base = SDW_ALH_BASE,
	.check_sdw_irq	= hda_common_check_sdw_irq,
	.check_ipc_irq	= hda_dsp_check_ipc_irq,
	.cl_init = cl_dsp_init,
	.power_down_dsp = hda_power_down_dsp,
	.disable_interrupts = hda_dsp_disable_interrupts,
	.hw_ip_version = SOF_INTEL_CAVS_2_0,
};
EXPORT_SYMBOL_NS(icl_chip_info, SND_SOC_SOF_INTEL_HDA_COMMON);