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https://github.com/RT-Thread/rt-thread.git
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GuEe-GUI
8517f2d086
1. version for v1.2 2. support packed queue 1. support MMIO/PCI over bus 2. new virtio queue api with dma/cpu sync 3. update for virtio device drivers: - net - block - console - input - gpu 4. new virtio device drivers: - 9p - crypto - rng - scmi - scsi Signed-off-by: GuEe-GUI <2991707448@qq.com>
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-02-25 GuEe-GUI the first version
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*/
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#ifndef __VIRTIO_INTERNAL_H__
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#define __VIRTIO_INTERNAL_H__
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#include <drivers/virtio.h>
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#include <drivers/core/dm.h>
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rt_inline rt_bool_t virtio_legacy_is_little_endian(void)
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{
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#ifdef ARCH_CPU_BIG_ENDIAN
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return RT_FALSE;
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#else
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return RT_TRUE;
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#endif
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}
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rt_inline rt_bool_t virtio_is_little_endian(struct rt_virtio_device *vdev)
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{
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return rt_virtio_has_feature(vdev, VIRTIO_F_VERSION_1) ||
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virtio_legacy_is_little_endian();
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}
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#ifdef __CHECKER__
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#define FORCE __attribute__((force))
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#else
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#define FORCE
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#endif
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rt_inline rt_uint16_t virtio16_to_cpu(struct rt_virtio_device *vdev, rt_uint16_t val)
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{
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if (virtio_is_little_endian(vdev))
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{
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return rt_le16_to_cpu((FORCE rt_le16_t)val);
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}
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else
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{
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return rt_be16_to_cpu((FORCE rt_be16_t)val);
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}
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}
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rt_inline rt_uint16_t cpu_to_virtio16(struct rt_virtio_device *vdev, rt_uint16_t val)
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{
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if (virtio_is_little_endian(vdev))
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{
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return (FORCE rt_le16_t)rt_cpu_to_le16(val);
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}
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else
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{
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return (FORCE rt_be16_t)rt_cpu_to_be16(val);
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}
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}
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rt_inline rt_uint32_t virtio32_to_cpu(struct rt_virtio_device *vdev, rt_uint32_t val)
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{
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if (virtio_is_little_endian(vdev))
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{
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return rt_le32_to_cpu((FORCE rt_le32_t)val);
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}
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else
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{
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return rt_be32_to_cpu((FORCE rt_be32_t)val);
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}
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}
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rt_inline rt_uint32_t cpu_to_virtio32(struct rt_virtio_device *vdev, rt_uint32_t val)
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{
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if (virtio_is_little_endian(vdev))
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{
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return (FORCE rt_le32_t)rt_cpu_to_le32(val);
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}
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else
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{
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return (FORCE rt_be32_t)rt_cpu_to_be32(val);
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}
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}
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rt_inline rt_uint64_t virtio64_to_cpu(struct rt_virtio_device *vdev, rt_uint64_t val)
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{
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if (virtio_is_little_endian(vdev))
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{
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return rt_le64_to_cpu((FORCE rt_le64_t)val);
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}
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else
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{
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return rt_be64_to_cpu((FORCE rt_be64_t)val);
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}
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}
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rt_inline rt_uint64_t cpu_to_virtio64(struct rt_virtio_device *vdev, rt_uint64_t val)
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{
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if (virtio_is_little_endian(vdev))
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{
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return (FORCE rt_le64_t)rt_cpu_to_le64(val);
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}
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else
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{
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return (FORCE rt_be64_t)rt_cpu_to_be64(val);
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}
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}
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#undef FORCE
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#endif /* __VIRTIO_INTERNAL_H__ */
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