/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-9-16 GuEe-GUI the first version * 2021-11-11 GuEe-GUI modify to virtio common interface */ #ifndef __VIRTIO_H__ #define __VIRTIO_H__ #include #include #ifdef RT_USING_LWP #include #include #endif #if RT_NAME_MAX < 16 #error "Please set RT_NAME_MAX to at lest 16" #endif #ifdef RT_USING_VIRTIO10 #define RT_USING_VIRTIO_VERSION 0x1 #endif #include #include #define VIRTIO_MAGIC_VALUE 0x74726976 /* "virt" */ #define VIRTIO_STATUS_ACKNOWLEDGE (1 << 0) #define VIRTIO_STATUS_DRIVER (1 << 1) #define VIRTIO_STATUS_DRIVER_OK (1 << 2) #define VIRTIO_STATUS_FEATURES_OK (1 << 3) #define VIRTIO_STATUS_NEEDS_RESET (1 << 6) #define VIRTIO_STATUS_FAILED (1 << 7) #define VIRTIO_F_NOTIFY_ON_EMPTY 24 #define VIRTIO_F_ANY_LAYOUT 27 #define VIRTIO_F_RING_INDIRECT_DESC 28 #define VIRTIO_F_RING_EVENT_IDX 29 #define VIRTIO_F_VERSION_1 32 #define VIRTIO_F_RING_PACKED 34 #ifdef RT_USING_LWP extern rt_mmu_info mmu_info; #define VIRTIO_VA2PA(vaddr) ((rt_ubase_t)rt_hw_mmu_v2p(&mmu_info, vaddr)) #define VIRTIO_PA2VA(paddr) ((rt_ubase_t)rt_ioremap((void *)paddr, ARCH_PAGE_SIZE)) #else #define VIRTIO_VA2PA(vaddr) ((rt_ubase_t)vaddr) #define VIRTIO_PA2VA(paddr) ((rt_ubase_t)paddr) #endif /* RT_USING_LWP */ #define VIRTIO_PAGE_SHIFT 12 #define VIRTIO_PAGE_SIZE (1 << VIRTIO_PAGE_SHIFT) #define VIRTIO_PAGE_ALIGN(addr) (RT_ALIGN(addr, VIRTIO_PAGE_SIZE)) enum { /* virtio 1.0 */ VIRTIO_DEVICE_ID_INVALID = 0, /* Invalid device */ VIRTIO_DEVICE_ID_NET = 1, /* Net */ VIRTIO_DEVICE_ID_BLOCK = 2, /* Block */ VIRTIO_DEVICE_ID_CONSOLE = 3, /* Console */ VIRTIO_DEVICE_ID_RNG = 4, /* Rng */ VIRTIO_DEVICE_ID_BALLOON = 5, /* Balloon */ VIRTIO_DEVICE_ID_IOMEM = 6, /* IO memory */ VIRTIO_DEVICE_ID_RPMSG = 7, /* Remote processor messaging */ VIRTIO_DEVICE_ID_SCSI = 8, /* SCSI */ VIRTIO_DEVICE_ID_9P = 9, /* 9p console */ VIRTIO_DEVICE_ID_MAC80211_WLAN = 10, /* Mac80211 wlan */ VIRTIO_DEVICE_ID_RPROC_SERIAL = 11, /* Remoteproc serial link */ VIRTIO_DEVICE_ID_CAIF = 12, /* CAIF */ VIRTIO_DEVICE_ID_MEM_BALLOON = 13, /* Memory balloon */ VIRTIO_DEVICE_ID_GPU = 16, /* GPU */ VIRTIO_DEVICE_ID_TIME = 17, /* Timer/clock device */ VIRTIO_DEVICE_ID_INPUT = 18, /* Input */ /* virtio 1.1 */ VIRTIO_DEVICE_ID_SOCKET = 19, /* Socket device */ VIRTIO_DEVICE_ID_CRYPTO = 20, /* Crypto device */ VIRTIO_DEVICE_ID_SIG_DIS_MOD = 21, /* Signal Distribution Module */ VIRTIO_DEVICE_ID_PSTORE = 22, /* Pstore device */ VIRTIO_DEVICE_ID_IOMMU = 23, /* IOMMU device */ VIRTIO_DEVICE_ID_MEM = 24, /* Memory device */ /* virtio 1.2 */ VIRTIO_DEVICE_ID_AUDIO = 25, /* Audio device */ VIRTIO_DEVICE_ID_FS = 26, /* File system device */ VIRTIO_DEVICE_ID_PMEM = 27, /* PMEM device */ VIRTIO_DEVICE_ID_RPMB = 28, /* RPMB device */ VIRTIO_DEVICE_ID_MAC80211_HWSIM = 29, /* Mac80211 hwsim wireless simulation device */ VIRTIO_DEVICE_ID_VIDEO_ENCODER = 30, /* Video encoder device */ VIRTIO_DEVICE_ID_VIDEO_DECODER = 31, /* Video decoder device */ VIRTIO_DEVICE_ID_SCMI = 32, /* SCMI device */ VIRTIO_DEVICE_ID_NITRO_SEC_MOD = 33, /* NitroSecureModule */ VIRTIO_DEVICE_ID_I2C_ADAPTER = 34, /* I2C adapter */ VIRTIO_DEVICE_ID_WATCHDOG = 35, /* Watchdog */ VIRTIO_DEVICE_ID_CAN = 36, /* CAN device */ VIRTIO_DEVICE_ID_DMABUF = 37, /* Virtio dmabuf */ VIRTIO_DEVICE_ID_PARAM_SERV = 38, /* Parameter Server */ VIRTIO_DEVICE_ID_AUDIO_POLICY = 39, /* Audio policy device */ VIRTIO_DEVICE_ID_BT = 40, /* Bluetooth device */ VIRTIO_DEVICE_ID_GPIO = 41, /* GPIO device */ VIRTIO_DEVICE_ID_RDMA = 42, /* RDMA device */ VIRTIO_DEVICE_TYPE_SIZE }; struct virtio_device { rt_uint32_t irq; struct virtq *queues; rt_size_t queues_num; union { rt_ubase_t *mmio_base; struct virtio_mmio_config *mmio_config; }; #ifdef RT_USING_SMP struct rt_spinlock spinlock; #endif void *priv; }; typedef rt_err_t (*virtio_device_init_handler)(rt_ubase_t *mmio_base, rt_uint32_t irq); void virtio_reset_device(struct virtio_device *dev); void virtio_status_acknowledge_driver(struct virtio_device *dev); void virtio_status_driver_ok(struct virtio_device *dev); void virtio_interrupt_ack(struct virtio_device *dev); rt_bool_t virtio_has_feature(struct virtio_device *dev, rt_uint32_t feature_bit); rt_err_t virtio_queues_alloc(struct virtio_device *dev, rt_size_t queues_num); void virtio_queues_free(struct virtio_device *dev); rt_err_t virtio_queue_init(struct virtio_device *dev, rt_uint32_t queue_index, rt_size_t ring_size); void virtio_queue_destroy(struct virtio_device *dev, rt_uint32_t queue_index); void virtio_queue_notify(struct virtio_device *dev, rt_uint32_t queue_index); void virtio_submit_chain(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index); rt_uint16_t virtio_alloc_desc(struct virtio_device *dev, rt_uint32_t queue_index); void virtio_free_desc(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index); rt_err_t virtio_alloc_desc_chain(struct virtio_device *dev, rt_uint32_t queue_index, rt_size_t count, rt_uint16_t *indexs); void virtio_free_desc_chain(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index); void virtio_fill_desc(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index, rt_uint64_t addr, rt_uint32_t len, rt_uint16_t flags, rt_uint16_t next); #endif /* __VIRTIO_H__ */