121 lines
4.4 KiB
C
121 lines
4.4 KiB
C
/*
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* Copyright (c) 2006-2021, 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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* 2021-9-16 GuEe-GUI the first version
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* 2021-11-11 GuEe-GUI modify to virtio common interface
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*/
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#ifndef __VIRTIO_H__
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#define __VIRTIO_H__
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#include <rthw.h>
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#include <rtdef.h>
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#ifndef RT_USING_VIRTIO_VERSION
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#define RT_USING_VIRTIO_VERSION 0x1
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#endif
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#ifndef RT_USING_VIRTIO_QUEUE_MAX_NR
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#define RT_USING_VIRTIO_QUEUE_MAX_NR 4
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#endif
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#include <virtio_mmio.h>
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#include <virtio_queue.h>
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#define VIRTIO_MAGIC_VALUE 0x74726976 /* "virt" */
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#define VIRTIO_STATUS_ACKNOWLEDGE (1 << 0)
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#define VIRTIO_STATUS_DRIVER (1 << 1)
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#define VIRTIO_STATUS_DRIVER_OK (1 << 2)
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#define VIRTIO_STATUS_FEATURES_OK (1 << 3)
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#define VIRTIO_STATUS_NEEDS_RESET (1 << 6)
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#define VIRTIO_STATUS_FAILED (1 << 7)
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#define VIRTIO_F_NOTIFY_ON_EMPTY 24
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#define VIRTIO_F_ANY_LAYOUT 27
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#define VIRTIO_F_RING_INDIRECT_DESC 28
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#define VIRTIO_F_RING_EVENT_IDX 29
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#define VIRTIO_F_VERSION_1 32
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#define VIRTIO_F_RING_PACKED 34
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#define VIRTIO_VA2PA(vaddr) ((rt_ubase_t)vaddr)
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#define VIRTIO_PAGE_SHIFT 12
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#define VIRTIO_PAGE_SIZE (1 << VIRTIO_PAGE_SHIFT)
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#define VIRTIO_PAGE_ALIGN(addr) (RT_ALIGN(addr, VIRTIO_PAGE_SIZE))
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enum
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{
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/* virtio 1.0 */
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VIRTIO_DEVICE_ID_INVALID = 0, /* Invalid device */
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VIRTIO_DEVICE_ID_NET = 1, /* Net */
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VIRTIO_DEVICE_ID_BLOCK = 2, /* Block */
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VIRTIO_DEVICE_ID_CONSOLE = 3, /* Console */
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VIRTIO_DEVICE_ID_RNG = 4, /* Rng */
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VIRTIO_DEVICE_ID_BALLOON = 5, /* Balloon */
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VIRTIO_DEVICE_ID_IOMEM = 6, /* IO memory */
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VIRTIO_DEVICE_ID_RPMSG = 7, /* Remote processor messaging */
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VIRTIO_DEVICE_ID_SCSI = 8, /* SCSI */
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VIRTIO_DEVICE_ID_9P = 9, /* 9p console */
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VIRTIO_DEVICE_ID_MAC80211_WLAN = 10, /* Mac80211 wlan */
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VIRTIO_DEVICE_ID_RPROC_SERIAL = 11, /* Remoteproc serial link */
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VIRTIO_DEVICE_ID_CAIF = 12, /* CAIF */
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VIRTIO_DEVICE_ID_MEM_BALLOON = 13, /* Memory balloon */
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VIRTIO_DEVICE_ID_GPU = 16, /* GPU */
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VIRTIO_DEVICE_ID_TIME = 17, /* Timer/clock device */
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VIRTIO_DEVICE_ID_INPUT = 18, /* Input */
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/* virtio 1.1 */
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VIRTIO_DEVICE_ID_SOCKET = 19, /* Socket device */
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VIRTIO_DEVICE_ID_CRYPTO = 20, /* Crypto device */
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VIRTIO_DEVICE_ID_SIG_DIS_MOD = 21, /* Signal Distribution Module */
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VIRTIO_DEVICE_ID_PSTORE = 22, /* Pstore device */
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VIRTIO_DEVICE_ID_IOMMU = 23, /* IOMMU device */
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VIRTIO_DEVICE_ID_MEM = 24, /* Memory device */
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VIRTIO_DEVICE_TYPE_SIZE
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};
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struct virtio_device
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{
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rt_uint32_t irq;
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struct virtq queues[RT_USING_VIRTIO_QUEUE_MAX_NR];
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union
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{
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rt_ubase_t *mmio_base;
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struct virtio_mmio_config *mmio_config;
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};
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#ifdef RT_USING_SMP
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struct rt_spinlock spinlock;
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#endif
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void *priv;
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};
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typedef rt_err_t (*virtio_device_init_handler)(rt_ubase_t *mmio_base, rt_uint32_t irq);
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void virtio_reset_device(struct virtio_device *dev);
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void virtio_status_acknowledge_driver(struct virtio_device *dev);
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void virtio_status_driver_ok(struct virtio_device *dev);
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void virtio_interrupt_ack(struct virtio_device *dev, rt_uint32_t ack);
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rt_err_t virtio_queue_init(struct virtio_device *dev, rt_uint32_t queue_index, rt_size_t ring_size);
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void virtio_queue_destroy(struct virtio_device *dev, rt_uint32_t queue_index);
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void virtio_queue_notify(struct virtio_device *dev, rt_uint32_t queue_index);
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void virtio_submit_chain(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index);
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rt_uint16_t virtio_alloc_desc(struct virtio_device *dev, rt_uint32_t queue_index);
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void virtio_free_desc(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index);
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rt_err_t virtio_alloc_desc_chain(struct virtio_device *dev, rt_uint32_t queue_index, rt_size_t count,
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rt_uint16_t *indexs);
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void virtio_free_desc_chain(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index);
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void virtio_fill_desc(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index,
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rt_uint64_t addr, rt_uint32_t len, rt_uint16_t flags, rt_uint16_t next);
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#endif /* __VIRTIO_H__ */
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