sst-dsp.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Intel Smart Sound Technology (SST) Core
 *
 * Copyright (C) 2013, Intel Corporation. All rights reserved.
 */

#ifndef __SOUND_SOC_SST_DSP_H
#define __SOUND_SOC_SST_DSP_H

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>

struct sst_dsp;

/*
 * SST Device.
 *
 * This structure is populated by the SST core driver.
 */
struct sst_dsp_device {
	/* Mandatory fields */
	struct sst_ops *ops;
	irqreturn_t (*thread)(int irq, void *context);
	void *thread_context;
};

/*
 * SST Platform Data.
 */
struct sst_pdata {
	/* ACPI data */
	u32 lpe_base;
	u32 lpe_size;
	u32 pcicfg_base;
	u32 pcicfg_size;
	u32 fw_base;
	u32 fw_size;
	int irq;

	/* Firmware */
	const struct firmware *fw;

	/* DMA */
	int resindex_dma_base; /* other fields invalid if equals to -1 */
	u32 dma_base;
	u32 dma_size;
	int dma_engine;
	struct device *dma_dev;

	/* DSP */
	u32 id;
	void *dsp;
};

/* SHIM Read / Write */
void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value);
u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset);
int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset,
				u32 mask, u32 value);
void sst_dsp_shim_update_bits_forced(struct sst_dsp *sst, u32 offset,
				u32 mask, u32 value);

/* SHIM Read / Write Unlocked for callers already holding sst lock */
void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value);
u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset);
int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset,
				u32 mask, u32 value);
void sst_dsp_shim_update_bits_forced_unlocked(struct sst_dsp *sst, u32 offset,
				u32 mask, u32 value);

/* Internal generic low-level SST IO functions - can be overidden */
void sst_shim32_write(void __iomem *addr, u32 offset, u32 value);
u32 sst_shim32_read(void __iomem *addr, u32 offset);
void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value);
u64 sst_shim32_read64(void __iomem *addr, u32 offset);

/* Mailbox management */
int sst_dsp_mailbox_init(struct sst_dsp *sst, u32 inbox_offset,
	size_t inbox_size, u32 outbox_offset, size_t outbox_size);
void sst_dsp_inbox_write(struct sst_dsp *sst, void *message, size_t bytes);
void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes);
void sst_dsp_outbox_write(struct sst_dsp *sst, void *message, size_t bytes);
void sst_dsp_outbox_read(struct sst_dsp *sst, void *message, size_t bytes);
int sst_dsp_register_poll(struct sst_dsp  *ctx, u32 offset, u32 mask,
		 u32 target, u32 time, char *operation);

#endif