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1/* SPDX-License-Identifier: GPL-2.0-only OR MIT */2/* Copyright (c) 2023 Imagination Technologies Ltd. */3 4#ifndef PVR_CCB_H5#define PVR_CCB_H6 7#include "pvr_rogue_fwif.h"8 9#include <linux/mutex.h>10#include <linux/types.h>11 12/* Forward declaration from pvr_device.h. */13struct pvr_device;14 15/* Forward declaration from pvr_gem.h. */16struct pvr_fw_object;17 18struct pvr_ccb {19 /** @ctrl_obj: FW object representing CCB control structure. */20 struct pvr_fw_object *ctrl_obj;21 /** @ccb_obj: FW object representing CCB. */22 struct pvr_fw_object *ccb_obj;23 24 /** @ctrl_fw_addr: FW virtual address of CCB control structure. */25 u32 ctrl_fw_addr;26 /** @ccb_fw_addr: FW virtual address of CCB. */27 u32 ccb_fw_addr;28 29 /** @num_cmds: Number of commands in this CCB. */30 u32 num_cmds;31 32 /** @cmd_size: Size of each command in this CCB, in bytes. */33 u32 cmd_size;34 35 /** @lock: Mutex protecting @ctrl and @ccb. */36 struct mutex lock;37 /**38 * @ctrl: Kernel mapping of CCB control structure. @lock must be held39 * when accessing.40 */41 struct rogue_fwif_ccb_ctl *ctrl;42 /** @ccb: Kernel mapping of CCB. @lock must be held when accessing. */43 void *ccb;44};45 46int pvr_kccb_init(struct pvr_device *pvr_dev);47void pvr_kccb_fini(struct pvr_device *pvr_dev);48int pvr_fwccb_init(struct pvr_device *pvr_dev);49void pvr_ccb_fini(struct pvr_ccb *ccb);50 51void pvr_fwccb_process(struct pvr_device *pvr_dev);52 53struct dma_fence *pvr_kccb_fence_alloc(void);54void pvr_kccb_fence_put(struct dma_fence *fence);55struct dma_fence *56pvr_kccb_reserve_slot(struct pvr_device *pvr_dev, struct dma_fence *f);57void pvr_kccb_release_slot(struct pvr_device *pvr_dev);58int pvr_kccb_send_cmd(struct pvr_device *pvr_dev,59 struct rogue_fwif_kccb_cmd *cmd, u32 *kccb_slot);60int pvr_kccb_send_cmd_powered(struct pvr_device *pvr_dev,61 struct rogue_fwif_kccb_cmd *cmd,62 u32 *kccb_slot);63void pvr_kccb_send_cmd_reserved_powered(struct pvr_device *pvr_dev,64 struct rogue_fwif_kccb_cmd *cmd,65 u32 *kccb_slot);66int pvr_kccb_wait_for_completion(struct pvr_device *pvr_dev, u32 slot_nr, u32 timeout,67 u32 *rtn_out);68bool pvr_kccb_is_idle(struct pvr_device *pvr_dev);69void pvr_kccb_wake_up_waiters(struct pvr_device *pvr_dev);70 71#endif /* PVR_CCB_H */72