87 lines
2.0 KiB
C
87 lines
2.0 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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* 2021-11-11 GuEe-GUI the first version
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*/
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#include <rtthread.h>
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#include <virtio.h>
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#ifdef BSP_USING_VIRTIO_BLK
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#include <virtio_blk.h>
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#endif
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#ifdef BSP_USING_VIRTIO_NET
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#include <virtio_net.h>
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#endif
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#ifdef BSP_USING_VIRTIO_CONSOLE
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#include <virtio_console.h>
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#endif
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#ifdef BSP_USING_VIRTIO_GPU
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#include <virtio_gpu.h>
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#endif
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#ifdef BSP_USING_VIRTIO_INPUT
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#include <virtio_input.h>
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#endif
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#include <board.h>
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static virtio_device_init_handler virtio_device_init_handlers[] =
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{
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#ifdef BSP_USING_VIRTIO_BLK
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[VIRTIO_DEVICE_ID_BLOCK] = rt_virtio_blk_init,
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#endif
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#ifdef BSP_USING_VIRTIO_NET
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[VIRTIO_DEVICE_ID_NET] = rt_virtio_net_init,
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#endif
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#ifdef BSP_USING_VIRTIO_CONSOLE
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[VIRTIO_DEVICE_ID_CONSOLE] = rt_virtio_console_init,
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#endif
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#ifdef BSP_USING_VIRTIO_GPU
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[VIRTIO_DEVICE_ID_GPU] = rt_virtio_gpu_init,
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#endif
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#ifdef BSP_USING_VIRTIO_INPUT
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[VIRTIO_DEVICE_ID_INPUT] = rt_virtio_input_init,
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#endif
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};
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int rt_virtio_devices_init(void)
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{
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int i;
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rt_uint32_t irq = VIRTIO_IRQ_BASE;
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rt_ubase_t mmio_base = VIRTIO_MMIO_BASE;
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struct virtio_mmio_config *mmio_config;
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virtio_device_init_handler init_handler;
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if (sizeof(virtio_device_init_handlers) == 0)
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{
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/* The compiler will optimize the codes after here. */
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return 0;
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}
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for (i = 0; i < VIRTIO_MAX_NR; ++i, ++irq, mmio_base += VIRTIO_MMIO_SIZE)
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{
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mmio_config = (struct virtio_mmio_config *)mmio_base;
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if (mmio_config->magic != VIRTIO_MAGIC_VALUE ||
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mmio_config->version != RT_USING_VIRTIO_VERSION ||
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mmio_config->vendor_id != VIRTIO_VENDOR_ID)
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{
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continue;
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}
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init_handler = virtio_device_init_handlers[mmio_config->device_id];
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if (init_handler != RT_NULL)
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{
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init_handler((rt_ubase_t *)mmio_base, irq);
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}
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}
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return 0;
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}
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INIT_DEVICE_EXPORT(rt_virtio_devices_init);
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