system/ulib/ddk/include/ddk/protocol/platform-device-lib.h

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#pragma once

#include <ddk/io-buffer.h>
#include <ddk/mmio-buffer.h>
#include <ddk/protocol/platform/device.h>
#include <zircon/compiler.h>
#include <zircon/types.h>

__BEGIN_CDECLS;


// Returns an interrupt handle. "index" is relative to the list of IRQs for the device.
static inline zx_status_t pdev_map_interrupt(const pdev_protocol_t* pdev, uint32_t index,
                                             zx_handle_t* out_handle) {
    return pdev->ops->get_interrupt(pdev->ctx, index, 0, out_handle);
}

// MMIO mapping helper.
static inline zx_status_t pdev_map_mmio_buffer(const pdev_protocol_t* pdev,
                                               uint32_t index, uint32_t cache_policy,
                                               mmio_buffer_t* buffer) {
    pdev_mmio_t mmio;

    zx_status_t status = pdev_get_mmio(pdev, index, &mmio);
    if (status != ZX_OK) {
        return status;
    }
    return mmio_buffer_init(buffer, mmio.offset, mmio.size, mmio.vmo, cache_policy);
}

__END_CDECLS;