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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* GXP SSMT driver.
*
* Copyright (C) 2022 Google LLC
*/
#ifndef __GXP_SSMT_H__
#define __GXP_SSMT_H__
#include "gxp-internal.h"
#define SSMT_CFG_OFFSET (0x0004)
#define SSMT_MODE_CLAMPED (0x0u)
#define SSMT_MODE_CLIENT (0x1u)
#define SSMT_CLAMP_MODE_BYPASS (1u << 31)
#define MAX_NUM_CONTEXTS 8
struct gxp_ssmt {
struct gxp_dev *gxp;
void __iomem *idma_ssmt_base;
void __iomem *inst_data_ssmt_base;
};
/*
* Initializes @ssmt structure.
*
* Resources allocated in this function are all device-managed.
*
* Returns 0 on success, -errno otherwise.
*/
int gxp_ssmt_init(struct gxp_dev *gxp, struct gxp_ssmt *ssmt);
/*
* Programs SSMT to have @core (0 ~ GXP_NUM_CORES - 1) issue transactions
* with VID = @vid.
*/
void gxp_ssmt_set_core_vid(struct gxp_ssmt *ssmt, uint core, uint vid);
/**
* gxp_ssmt_activate_scid() - Activates the transactions with SCID @scid.
*
* SSMT will be configured as streams with SCID=@scid to have VID=@scid for memory transactions.
*/
void gxp_ssmt_activate_scid(struct gxp_ssmt *ssmt, uint scid);
/**
* gxp_ssmt_deactivate_scid() - Deactivates the transactions with SCID @scid.
*
* SSMT will be configured as streams with SCID=@scid to have VID=0 signal for memory
* transactions.
*/
void gxp_ssmt_deactivate_scid(struct gxp_ssmt *ssmt, uint scid);
#endif /* __GXP_SSMT_H__ */
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