dma_tt_bh_noc.h

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/*
 * Copyright (c) 2025 Tenstorrent AI ULC
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#include <zephyr/drivers/dma.h>
 
enum tt_bh_dma_noc_channel_direction {
        TT_BH_DMA_NOC_CHANNEL_DIRECTION_BROADCAST = DMA_CHANNEL_DIRECTION_PRIV_START
};
 
struct tt_bh_dma_noc_coords {
        uint8_t source_x, source_y;
        uint8_t dest_x, dest_y;
};
typedef int (*tt_bh_dma_api_config)(const struct device *dev, uint32_t channel,
                                    struct dma_config *config, struct tt_bh_dma_noc_coords *coords);
__subsystem struct tt_bh_dma_noc_driver_api {
        struct dma_driver_api dma_api;

        tt_bh_dma_api_config config;
};
 
DEVICE_API_EXTENDS(tt_bh_dma_noc, dma, dma_api);
 
static inline int tt_dma_config(const struct device *dev, uint32_t channel, struct dma_config *cfg,
                                struct tt_bh_dma_noc_coords *coords)
{
        const struct tt_bh_dma_noc_driver_api *api = DEVICE_API_GET(tt_bh_dma_noc, dev);
 
        if (!api->config) {
                return -ENOSYS;
        }
 
        if (cfg == NULL || coords == NULL) {
                return -EINVAL;
        }
 
        return api->config(dev, channel, cfg, coords);
}