/* SPDX-License-Identifier: MIT */
/*
 * Copyright © 2022 Intel Corporation
 */

#ifndef _XE_GUC_CT_H_
#define _XE_GUC_CT_H_

#include "xe_guc_ct_types.h"

struct drm_printer;
struct xe_device;

int xe_guc_ct_init_noalloc(struct xe_guc_ct *ct);
int xe_guc_ct_init(struct xe_guc_ct *ct);
int xe_guc_ct_init_post_hwconfig(struct xe_guc_ct *ct);
int xe_guc_ct_enable(struct xe_guc_ct *ct);
int xe_guc_ct_restart(struct xe_guc_ct *ct);
void xe_guc_ct_disable(struct xe_guc_ct *ct);
void xe_guc_ct_runtime_resume(struct xe_guc_ct *ct);
void xe_guc_ct_runtime_suspend(struct xe_guc_ct *ct);
void xe_guc_ct_stop(struct xe_guc_ct *ct);
void xe_guc_ct_flush_and_stop(struct xe_guc_ct *ct);
void xe_guc_ct_fast_path(struct xe_guc_ct *ct);

struct xe_guc_ct_snapshot *xe_guc_ct_snapshot_capture(struct xe_guc_ct *ct);
void xe_guc_ct_snapshot_print(struct xe_guc_ct_snapshot *snapshot, struct drm_printer *p);
void xe_guc_ct_snapshot_free(struct xe_guc_ct_snapshot *snapshot);
void xe_guc_ct_print(struct xe_guc_ct *ct, struct drm_printer *p, bool want_ctb);

static inline bool xe_guc_ct_initialized(struct xe_guc_ct *ct)
{
        /* READ_ONCE pairs with WRITE_ONCE in guc_ct_change_state. */
        return READ_ONCE(ct->state) != XE_GUC_CT_STATE_NOT_INITIALIZED;
}

static inline bool xe_guc_ct_enabled(struct xe_guc_ct *ct)
{
        /* READ_ONCE pairs with WRITE_ONCE in guc_ct_change_state. */
        return READ_ONCE(ct->state) == XE_GUC_CT_STATE_ENABLED;
}

static inline void xe_guc_ct_irq_handler(struct xe_guc_ct *ct)
{
        if (!xe_guc_ct_enabled(ct))
                return;

        wake_up_all(&ct->wq);
        queue_work(ct->g2h_wq, &ct->g2h_worker);
        xe_guc_ct_fast_path(ct);
}

/* Basic CT send / receives */
int xe_guc_ct_send(struct xe_guc_ct *ct, const u32 *action, u32 len,
                   u32 g2h_len, u32 num_g2h);
int xe_guc_ct_send_locked(struct xe_guc_ct *ct, const u32 *action, u32 len,
                          u32 g2h_len, u32 num_g2h);
int xe_guc_ct_send_recv(struct xe_guc_ct *ct, const u32 *action, u32 len,
                        u32 *response_buffer);
static inline int
xe_guc_ct_send_block(struct xe_guc_ct *ct, const u32 *action, u32 len)
{
        return xe_guc_ct_send_recv(ct, action, len, NULL);
}

/* This is only version of the send CT you can call from a G2H handler */
int xe_guc_ct_send_g2h_handler(struct xe_guc_ct *ct, const u32 *action,
                               u32 len);

/* Can't fail because a GT reset is in progress */
int xe_guc_ct_send_recv_no_fail(struct xe_guc_ct *ct, const u32 *action,
                                u32 len, u32 *response_buffer);
static inline int
xe_guc_ct_send_block_no_fail(struct xe_guc_ct *ct, const u32 *action, u32 len)
{
        return xe_guc_ct_send_recv_no_fail(ct, action, len, NULL);
}

long xe_guc_ct_queue_proc_time_jiffies(struct xe_guc_ct *ct);

/**
 * xe_guc_ct_wake_waiters() - GuC CT wake up waiters
 * @ct: GuC CT object
 */
static inline void xe_guc_ct_wake_waiters(struct xe_guc_ct *ct)
{
        wake_up_all(&ct->wq);
}

#endif