linux/drivers/dma/qcom/hidma.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Qualcomm Technologies HIDMA data structures
 *
 * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
 */

#ifndef QCOM_HIDMA_H
#define QCOM_HIDMA_H

#include <linux/kfifo.h>
#include <linux/interrupt.h>
#include <linux/dmaengine.h>

#define HIDMA_TRE_SIZE …
#define HIDMA_TRE_CFG_IDX …
#define HIDMA_TRE_LEN_IDX …
#define HIDMA_TRE_SRC_LOW_IDX …
#define HIDMA_TRE_SRC_HI_IDX …
#define HIDMA_TRE_DEST_LOW_IDX …
#define HIDMA_TRE_DEST_HI_IDX …

enum tre_type { … };

struct hidma_tre { … };

struct hidma_lldev { … };

struct hidma_desc { … };

struct hidma_chan { … };

struct hidma_dev { … };

int hidma_ll_request(struct hidma_lldev *llhndl, u32 dev_id,
			const char *dev_name,
			void (*callback)(void *data), void *data, u32 *tre_ch);

void hidma_ll_free(struct hidma_lldev *llhndl, u32 tre_ch);
enum dma_status hidma_ll_status(struct hidma_lldev *llhndl, u32 tre_ch);
bool hidma_ll_isenabled(struct hidma_lldev *llhndl);
void hidma_ll_queue_request(struct hidma_lldev *llhndl, u32 tre_ch);
void hidma_ll_start(struct hidma_lldev *llhndl);
int hidma_ll_disable(struct hidma_lldev *lldev);
int hidma_ll_enable(struct hidma_lldev *llhndl);
void hidma_ll_set_transfer_params(struct hidma_lldev *llhndl, u32 tre_ch,
	dma_addr_t src, dma_addr_t dest, u32 len, u32 flags, u32 txntype);
void hidma_ll_setup_irq(struct hidma_lldev *lldev, bool msi);
int hidma_ll_setup(struct hidma_lldev *lldev);
struct hidma_lldev *hidma_ll_init(struct device *dev, u32 max_channels,
			void __iomem *trca, void __iomem *evca,
			u8 chidx);
int hidma_ll_uninit(struct hidma_lldev *llhndl);
irqreturn_t hidma_ll_inthandler(int irq, void *arg);
irqreturn_t hidma_ll_inthandler_msi(int irq, void *arg, int cause);
void hidma_cleanup_pending_tre(struct hidma_lldev *llhndl, u8 err_info,
				u8 err_code);
void hidma_debug_init(struct hidma_dev *dmadev);
void hidma_debug_uninit(struct hidma_dev *dmadev);
#endif