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/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
/* Copyright (c) 2023 Imagination Technologies Ltd. */
#ifndef PVR_CCB_H
#define PVR_CCB_H
#include "pvr_rogue_fwif.h"
#include <linux/mutex.h>
#include <linux/types.h>
/* Forward declaration from pvr_device.h. */
struct pvr_device;
/* Forward declaration from pvr_gem.h. */
struct pvr_fw_object;
struct pvr_ccb {
/** @ctrl_obj: FW object representing CCB control structure. */
struct pvr_fw_object *ctrl_obj;
/** @ccb_obj: FW object representing CCB. */
struct pvr_fw_object *ccb_obj;
/** @ctrl_fw_addr: FW virtual address of CCB control structure. */
u32 ctrl_fw_addr;
/** @ccb_fw_addr: FW virtual address of CCB. */
u32 ccb_fw_addr;
/** @num_cmds: Number of commands in this CCB. */
u32 num_cmds;
/** @cmd_size: Size of each command in this CCB, in bytes. */
u32 cmd_size;
/** @lock: Mutex protecting @ctrl and @ccb. */
struct mutex lock;
/**
* @ctrl: Kernel mapping of CCB control structure. @lock must be held
* when accessing.
*/
struct rogue_fwif_ccb_ctl *ctrl;
/** @ccb: Kernel mapping of CCB. @lock must be held when accessing. */
void *ccb;
};
int pvr_kccb_init(struct pvr_device *pvr_dev);
void pvr_kccb_fini(struct pvr_device *pvr_dev);
int pvr_fwccb_init(struct pvr_device *pvr_dev);
void pvr_ccb_fini(struct pvr_ccb *ccb);
void pvr_fwccb_process(struct pvr_device *pvr_dev);
struct dma_fence *pvr_kccb_fence_alloc(void);
void pvr_kccb_fence_put(struct dma_fence *fence);
struct dma_fence *
pvr_kccb_reserve_slot(struct pvr_device *pvr_dev, struct dma_fence *f);
void pvr_kccb_release_slot(struct pvr_device *pvr_dev);
int pvr_kccb_send_cmd(struct pvr_device *pvr_dev,
struct rogue_fwif_kccb_cmd *cmd, u32 *kccb_slot);
int pvr_kccb_send_cmd_powered(struct pvr_device *pvr_dev,
struct rogue_fwif_kccb_cmd *cmd,
u32 *kccb_slot);
void pvr_kccb_send_cmd_reserved_powered(struct pvr_device *pvr_dev,
struct rogue_fwif_kccb_cmd *cmd,
u32 *kccb_slot);
int pvr_kccb_wait_for_completion(struct pvr_device *pvr_dev, u32 slot_nr, u32 timeout,
u32 *rtn_out);
bool pvr_kccb_is_idle(struct pvr_device *pvr_dev);
void pvr_kccb_wake_up_waiters(struct pvr_device *pvr_dev);
#endif /* PVR_CCB_H */
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